1539 files changed, 414261 insertions, 132680 deletions

diff --git a/ChangeLog b/ChangeLog
index 3312e4f..cf9e4df 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,11 +4,21 @@
 	* tests/regexp.test:    regexp to crash Tcl. Thanks to Tom Lane
 	for providing the test-case and the patch.
 
+2013-02-26  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclObj.c: Don't panic if Tcl_ConvertToType is called for a
+	type that doesn't have a setFromAnyProc, create a proper error message.
+
+2013-02-25  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/assocd.test:	[Bugs 3605719,3605720] Test independence.
+	* tests/basic.test:	Thanks Rolf Ade for patches.
+
 2013-02-22  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/tclCompile.c:	Shift more burden of smart cleanup onto the
-	* generic/tclExecute.c:	TclFreeCompileEnv() routine.  Stop crashes
-	when the hookProc raises an error.
+	TclFreeCompileEnv() routine.  Stop crashes when the hookProc raises
+	an error.
 
 2013-02-20  Don Porter  <dgp@users.sourceforge.net>
 
@@ -16,31 +26,63 @@
 	* tests/namespace.test:	to [namespace export] always clears, whether
 	or not new export patterns are specified.
 
+2013-02-19  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclTrace.c:  [Bug 2438181]: Incorrect error reporting in
+	* tests/trace.test:    traces. Test-case and fix provided by Poor Yorick.
+
 2013-02-15  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/regc_nfa.c:	[Bug 3604074] Fix regexp optimization to
 	* tests/regexp.test:	stop hanging on the expression
 	((((((((a)*)*)*)*)*)*)*)* .  Thanks to Bjørn Grathwohl for discovery.
 
+2013-02-14  Harald Oehlmann  <oehhar@users.sf.net>
+
+	* library/msgcat/msgcat.tcl: [Bug 3604576]: Catch missing registry entry
+	"HCU\Control Panel\International".
+	Bumped msgcat version to 1.5.1
+
 2013-02-05  Don Porter  <dgp@users.sourceforge.net>
 
 	* win/tclWinFile.c:	[Bug 3603434] Make sure TclpObjNormalizePath() 
 	properly declares "a:/" to be normalized, even when no "A:" drive is
 	present on the system.
 
+2013-02-05  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclLoadNone.c (TclpLoadMemory): [Bug 3433012]: Added dummy
+	version of this function to use in the event that a platform thinks it
+	can load from memory but cannot actually do so due to it being
+	disabled at configuration time.
+
 2013-01-30  Andreas Kupries  <andreask@activestate.com>
 
 	* library/platform/platform.tcl (::platform::LibcVersion): See
 	* library/platform/pkgIndex.tcl: [Bug 3599098]: Fixed the RE
-	  extracting the version to avoid issues with recent changes to
-	  the glibc banner. Now targeting a less variable part of the
-	  string. Bumped package to version 1.0.11.
+	* unix/Makefile.in: extracting the version to avoid issues with
+	* win/Makefile.in: recent changes to the glibc banner. Now
+	  targeting a less variable part of the string. Bumped package to
+	  version 1.0.11.
 
 2013-01-26  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* unix/tclUnixCompat.c: [Bug 3601804]: platformCPUID segmentation
 	fault on Darwin.
 
+2013-01-23  Donal K. Fellows  <dkf@users.sf.net>
+
+	* library/http/http.tcl (http::geturl): [Bug 2911139]: Do not do vwait
+	for connect to avoid reentrancy problems (except when operating
+	without a -command option). Internally, this means that all sockets
+	created by the http package will always be operated in asynchronous
+	mode.
+
+2013-01-18  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclPort.h: [Bug 3598300]: unix: tcl.h does not include
+	sys/stat.h
+
 2013-01-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* Makefile.in: Enable win32 build with -DTCL_NO_DEPRECATED, just
@@ -49,19 +91,42 @@
 	* generic/tclBasic.c: TCL_NO_DEPRECATED is defined, so Tk
 	can benefit from it too.
 
+2013-01-14  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* win/tcl.m4: More flexible search for win32 tclConfig.sh,
+	backported from TEA (not actually used in Tcl, only for Tk)
+
+2013-01-13  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclIntDecls.h: If TCL_NO_DEPRECATED is defined, make
+	sure that TIP #139 functions all are taken from the public stub
+	table, even if the inclusion is through tclInt.h.
+
+2013-01-09  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* library/http/http.tcl: [Bug 3599395]: http assumes status line
+	is a proper tcl list.
+	Bump http package to 2.7.11.
+
 2013-01-08  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* win/tclWinFile.c: [Bug 3092089]: [file normalize] can remove path
 	components.	[Bug 3587096] win vista/7: "can't find init.tcl" when
-	called via junction.
+	called via junction without folder list access.
 
 2013-01-07  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tcl.decls: Extend the public and private stub tables with
-	* generic/tclInt.decls: dummy NULL entries, up to the size of the
-	Tcl 8.6 stub tables. This makes it easier to debug extensions which
-	use Tcl 8.5/8.6 features but (erroneously) are attempted to be loaded
-	in Tcl 8.4.
+	* generic/tcl.decls: Extend the public stub table with dummy NULL
+	entries, up to the size of the Tcl 8.6 stub tables. This makes it
+	easier to debug extensions which use Tcl 8.6 features but (erroneously)
+	are attempted to be loaded in Tcl 8.5.
+
+2013-01-02  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclEnsemble.c:  Remove stray calls to Tcl_Alloc and
+	* generic/tclExecute.c:   friends: the core should only use ckalloc
+	* generic/tclIORTrans.c:  to allow MEM_DEBUG to work properly
+	* generic/tclTomMathInterface.c:
 
 2012-12-31  Donal K. Fellows  <dkf@users.sf.net>
 
@@ -76,9 +141,7 @@
 
 2012-12-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* unix/dltest/pkgb.c:  Turn pkgb.so into a Tcl9 interoperability test
-    library: Whatever Tcl9 looks like, loading pkgb.so in Tcl 9 should
-    either result in an error-message, either succeed, but never crash.
+	* unix/dltest/pkgb.c:  Make pkgb.so loadable in Tcl 8.4 as well.
 	* generic/tclStubLib.c: Eliminate unnessarcy static HasStubSupport() and
 	isDigit() functions, just do the same inline.
 
@@ -87,6 +150,12 @@
 	* generic/tcl.h: Fix Tcl_DecrRefCount macro such that it
 	doesn't access its objPtr parameter twice any more.
 
+2012-12-07  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* unix/dltest/pkgb.c:  Turn pkgb.so into a Tcl9 interoperability test
+        library: Whatever Tcl9 looks like, loading pkgb.so in Tcl 9 should
+        either result in an error-message, either succeed, but never crash.
+
 2012-11-14  Donal K. Fellows  <dkf@users.sf.net>
 
 	* unix/tclUnixPipe.c (DefaultTempDir): [Bug 2933003]: Allow overriding
@@ -95,45 +164,231 @@
 	the directory name (defaults to "/tmp" as that is the most common
 	default).
 
+2012-11-13  Joe Mistachkin  <joe@mistachkin.com>
+
+	* win/tclWinInit.c: also search for the library directory (init.tcl,
+	encodings, etc) relative to the build directory associated with the
+	source checkout.
+
+2012-11-09  Don Porter  <dgp@users.sourceforge.net>
+
+	*** 8.5.13 TAGGED FOR RELEASE ***
+
+	* generic/tcl.h:	Bump to 8.5.13 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
+	* README:
+
+	* unix/configure:	autoconf-2.59
+	* win/configure:
+
+2012-11-07  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/tzdata/Africa/Casablanca:
+	* library/tzdata/America/Araguaina:
+	* library/tzdata/America/Bahia:
+	* library/tzdata/America/Havana:
+	* library/tzdata/Asia/Amman:
+	* library/tzdata/Asia/Gaza:
+	* library/tzdata/Asia/Hebron:
+	* library/tzdata/Asia/Jerusalem:
+	* library/tzdata/Pacific/Apia:
+	* library/tzdata/Pacific/Fakaofo:
+	* library/tzdata/Pacific/Fiji:		Import tzdata2012i.
+
 2012-11-07  Don Porter  <dgp@users.sourceforge.net>
 
 	* win/tclWinSock.c:	[Bug 3574493] Avoid hanging on exit due to
 	use of synchronization calls in routines called by DllMain().
 
+2012-11-06  Donal K. Fellows  <dkf@users.sf.net>
+
+	* library/http/http.tcl (http::Finish): [Bug 3581754]: Ensure that
+	callbacks are done at most once to prevent problems with timeouts on a
+	keep-alive connection (combined with reentrant http package use)
+	causing excessive stack growth. Not a fix for the underlying problem,
+	but ensures that pain will be mostly kept away from users.
+	Bump http package to 2.7.10.
+
+2012-10-23  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclInt.h:    Remove unused TclpLoadFile function.
+	* generic/tclIOUtil.c
+
+2012-10-14  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclDictObj.c: [Bug 3576509]: tcl::Bgerror crashes with invalid
+	* generic/tclEvent.c:    arguments. Better fix, which helps for all
+	Tcl_DictObjGet() calls in Tcl's source code.
+
+2012-10-13  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclEvent.c: [Bug 3576509]: tcl::Bgerror crashes with invalid
+	arguments
+
 2012-10-03  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/tclIO.c:	When checking for std channels being closed,
 	compare the channel state, not the channel itself so that stacked
 	channels do not cause trouble.
 
+2012-09-07  Harald Oehlmann  <oehhar@users.sf.net>
+
+	IMPLEMENTATION OF TIP#404.
+
+	* library/msgcat/msgcat.tcl:	[FRQ 3544988]: (Backport from Tcl 8.6)
+	* library/msgcat/pkgIndex.tcl:	New commands [mcflset] and [mcflmset]
+	* unix/Makefile.in:		to set mc entries with implicit message
+	* win/Makefile.in:		file locale. Bump to 1.5.0.
+	* tests/msgcat.test:
+
+2012-09-07  Alexandre Ferrieux <ferrieux@users.sourceforge.net>
+
+	* unix/tclUnixNotfy.c Backport of 2008-12-12 8.6 commit: Fix
+	missing CLOEXEC on internal pipes [2417695]
+
+2012-08-25  Donal K. Fellows  <dkf@users.sf.net>
+
+	* library/msgs/uk.msg: [Bug 3561330]: Use the correct full name of
+	March in Ukrainian. Thanks to Mikhail Teterin for reporting.
+
+2012-08-23  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclBinary.c: [Bug 3496014]: (Backport from Tcl 8.6) Protect
+	Tcl_SetByteArrayObj for invalid values.
+
+2012-08-20  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclPathObj.c:	[Bug 3559678]: Fix bad filename normalization
+	when the last component is the empty string.
+
+2012-08-20  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* win/tclWinPort.h:  Remove wrapper macro for ntohs(): unnecessary,
+	because it doesn't require an initialized winsock_2 library. See:
+	<http://msdn.microsoft.com/en-us/library/windows/desktop/ms740075%28v=vs.85%29.aspx>
+	* win/tclWinSock.c
+	* generic/tclStubInit.c
+
 2012-08-17  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* win/nmakehlp.c: Add "-V<num>" option, in order to be able
 	to detect partial version numbers.
 
+2012-08-15  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* win/buildall.vc.bat: Only build the threaded builds by default
+	* win/rules.vc:        Backport some improvements from Tcl 8.6
+	* win/makefile.vc:
+
+2010-08-13  Stuart Cassoff  <stwo@users.sourceforge.net>
+
+	* unix/tclUnixCompat.c: [Bug 3555454]: Rearrange a bit to quash
+	'declared but never defined' compiler warnings.
+
+2012-08-08  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclfileName.c: [Bug #1536227]: Cygwin network pathname
+	* tests/fileName.test:   support
+
+2012-08-07  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclIOUtil.c:	[Bug 3554250]: Overlooked one field of cleanup
+	in the thread exit handler for the filesystem subsystem.
+
 2012-07-31  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* win/nmakehlp.c: Backport from Tcl 8.6, but add -Q option from
 	sampleextension.
 
+2012-07-28  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* tests/clock.test:    [Bug 3549770]: Multiple test failures running
+	* tests/registry.test: tcltest outside build tree
+	* tests/winDde.test:
+
 2012-07-27  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* generic/tclUniData.c:   Support Unicode 6.2 (Add Turkish lira sign)
 	* generic/regc_locale.c:
 
+2012-07-24  Don Porter  <dgp@users.sourceforge.net>
+
+	*** 8.5.12 TAGGED FOR RELEASE ***
+
+	* generic/tcl.h:	Bump to 8.5.12 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
+	* README:
+
+	* unix/configure:	autoconf-2.59
+	* win/configure:
+
+	* changes:	Update for 8.5.12 release.
+
+2012-07-19  Joe Mistachkin  <joe@mistachkin.com>
+
+	* generic/tclTest.c: Fix several more missing mutex-locks in
+	TestasyncCmd.
+
+2012-07-19  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
+
+	* generic/tclTest.c: [Bug 3544685]: Missing mutex-lock in
+	TestasyncCmd since 2011-08-19. Unbounded gratitude to Stuart
+	Cassoff for spotting it.
+
 2012-07-17  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* win/makefile.vc: [Bug 3544932]: Visual studio compiler check fails
 
+2012-07-16  Donal K. Fellows  <dkf@users.sf.net>
+
+	* unix/tclUnixCompat.c (TclpGetPwNam, TclpGetPwUid, TclpGetGrNam)
+	(TclpGetGrGid): [Bug 3544683]: Use the elaborate memory management
+	scheme outlined on http://www.opengroup.org/austin/docs/austin_328.txt
+	to handle Tcl's use of standard reentrant versions of the passwd/group
+	access functions so that everything can work on all BSDs. Problem
+	identified by Stuart Cassoff.
+
+2012-07-11  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* win/tclWinReg.c: [Bug #3362446]: registry keys command fails
+	with 8.5/8.6. Follow Microsofts example better in order to prevent
+	problems when using HKEY_PERFORMANCE_DATA.
+
+2012-07-10  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* unix/tclUnixNotfy.c: [Bug 3541646]: Don't panic on triggerPipe
+	overrun.
+
+2012-07-10  Donal K. Fellows  <dkf@users.sf.net>
+
+	* win/tclWinSock.c (InitializeHostName): Corrected logic that
+	extracted the name of the computer from the gethostname call so that
+	it would use the name on success, not failure. Also ensured that the
+	buffer size is exactly that recommended by Microsoft.
+
 2012-07-05  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixPipe.c:	[Bug 1189293] Make "<<" binary safe.
+	* unix/tclUnixPipe.c:	[Bug 1189293]: Make "<<" binary safe.
 	* win/tclWinPipe.c:
 
 2012-06-29  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* library/msgcat/msgcat.tcl:   Add tn, ro_MO and ru_MO to msgcat. Make it
-	* library/msgcat/pkgIndex.tcl: work on cygwin. Bump to 1.3.5
+	* library/msgcat/msgcat.tcl:   Add tn, ro_MO and ru_MO to msgcat.
+
+2012-06-29  Harald Oehlmann <harald.oehlmann@elmicron.de>
+
+	* library/msgcat/msgcat.tcl:	[Bug 3536888]: Locale guessing of
+	* library/msgcat/pkgIndex.tcl:	msgcat fails on (some) Windows 7. Bump
+	* unix/Makefile.in:		to 1.4.5
+	* win/Makefile.in:
 
 2012-06-29  Donal K. Fellows  <dkf@users.sf.net>
 
@@ -143,14 +398,41 @@
 	this rule correctly. This does not represent a functionality change,
 	merely a clearer documentation of a long-standing constraint.
 
+2012-06-25  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclFileSystem.h:	[Bug 3024359]: Make sure that the
+	* generic/tclIOUtil.c:	per-thread cache of the list of file systems
+	* generic/tclPathObj.c:	currently registered is only updated at times
+	when no active loops are traversing it.  Also reduce the amount of
+	epoch storing and checking to where it can make a difference.
+
+2012-06-25  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCmdAH.c (EncodingDirsObjCmd): [Bug 3537605]: Do the right
+	thing when reporting errors with the number of arguments.
+
+2012-06-25  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclfileName.c: [Patch #1536227]: Cygwin network pathname
+	* tests/fileName.test:   support
+
 2012-06-23  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* unix/tclUnixNotfy.c: [Bug 3508771]: Cygwin notifier for handling
 	win32 events.
 
-2012-06-19  Jan Nijtmans  <nijtmans@users.sf.net>
+2012-06-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinReg.c:  Plug memory leak, part of [Bug #3362446]
+	* win/tclWinReg.c:          [Bug #3362446]: registry keys command fails
+	* tests/registry.test:      with 8.5/8.6
+	* library/reg/pkgIndex.tcl: registry version to 1.2.2
+
+2012-06-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	[Bug 3532959]: Make sure the lifetime
+	* generic/tclProc.c:	management of entries in the linePBodyPtr
+	* tests/proc.test:	hash table can tolerate either order of
+	teardown, interp first, or Proc first.
 
 2012-06-08  Don Porter  <dgp@users.sourceforge.net>
 
@@ -158,16 +440,36 @@
 	* unix/tclUnixPort.h:	Thanks Joe English.
 	* unix/configure:	autoconf 2.13
 
+	* unix/tclUnixPort.h:	[Bug 3530533]: Centralize #include <pthread.h>
+	* unix/tclUnixThrd.c:	in the tclUnixPort.h header so that old unix
+	systems that need inclusion in all compilation units are supported.
+
 2012-06-06  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* unix/tclUnixInit.c: On Cygwin, use win32 API in stead of uname()
 	to determine the tcl_platform variables.
 
+2012-05-31  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/safe.n: [Bug 1997845]: Corrected formatting so that generated
+	* tools/tcltk-man2html.tcl (cross-reference): HTML can link properly.
+
+2012-05-29  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/expr.n, doc/mathop.n: [Bug 2931407]: Clarified semantics of
+	division and remainder operators.
+
+2012-05-25  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/namespace.n, doc/Ensemble.3: [Bug 3528418]: Document what is
+	going on with respect to qualification of command prefixes in ensemble
+	subcommand maps.
+
 2012-05-25  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinDde.c:    [Bug 473946]: special characters not correctly sent,
-	now for XTYP_EXECUTE as well as XTYP_REQUEST.
-	* win/Makefile.in:    Fix "make genstubs" when cross-compiling on UNIX
+	* win/tclWinDde.c:	[Bug 473946]: special characters not correctly
+	* win/Makefile.in:	sent, now for XTYP_EXECUTE as well as
+	XTYP_REQUEST.  Fix "make genstubs" when cross-compiling on UNIX
 
 2012-05-24  Jan Nijtmans  <nijtmans@users.sf.net>
 
@@ -182,7 +484,7 @@
 	* tools/genStubs.tcl:   Let cygwin share stub table with win32
 	* win/Makefile.in:      Don't hardcode dde and reg dll version numbers
 	* win/tclWinSock.c:     implement TclpInetNtoa for win32
-	* generic/tclInt.decls: Revert most of [ae92de6078], since when
+	* generic/tclInt.decls: Revert most of [fcc5957e59], since when
 	  we let cygwin share the win32 stub table this is no longer necessary
 	* generic/tcl*Decls.h:  re-generated
 
@@ -196,47 +498,82 @@
 
 2012-05-17  Donal K. Fellows  <dkf@users.sf.net>
 
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): [Bug 3106532]: Corrected
+	resulting indexes from -indexvar option to be usable with [string
+	range]; this was always the intention (and is consistent with [regexp
+	-indices] too).
+	***POTENTIAL INCOMPATIBILITY***
+	Uses of [switch -regexp -indexvar] that previously compensated for the
+	wrong offsets (by subtracting 1 from the end indices) now do not need
+	to do so as the value is correct.
+
+	* library/safe.tcl (safe::InterpInit): Ensure that the module path is
+	constructed in the correct order.
+	(safe::AliasGlob): [Bug 2964715]: More extensive handling of what
+	globbing is required to support package loading.
+
 	* doc/expr.n: [Bug 3525462]: Corrected statement about what happens
 	when comparing "0y" and "0x12"; the previously documented behavior was
 	actually a subtle bug (now long-corrected).
 
 2012-05-13  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinDde.c:   Protect against receiving strings without ending \0,
-	as external applications (or Tcl with TIP #106) could generate that.
+	* win/tclWinDde.c:	Protect against receiving strings without
+	ending \0, as external applications (or Tcl with TIP #106) could
+	generate that.
 
 2012-05-10  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinDde.c:    [Bug 473946]: special characters not correctly sent
-	* library/dde/pkgIndex.tcl  Increase version to 1.2.5
+	* win/tclWinDde.c:		[Bug 473946]: Special characters not
+	* library/dde/pkgIndex.tcl:	correctly sent.  Bump to 1.3.3
 
 2012-05-02  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/configure.in:    Better detection and implementation for cpuid
-	* generic/configure:       instruction on Intel-derived processors, both
-	* generic/tclUnixCompat.c: 32-bit and 64-bit.
-	* generic/tclTest.c:       Move cpuid testcase from win-specific to generic
-	* win/tclWinTest.c:        tests, as it should work on all Intel-related
-	* tests/platform.test:     platforms now
-	* generic/tcl.decls:       Simplify stub tables for functions which work on
-	* generic/tclInt.decls:    both UNIX and windows, as in Tcl 8.5 and 8.6
-	* generic/tcl*Decls.h:
+	* generic/configure.in:		Better detection and implementation for
+	* generic/configure:		cpuid instruction on Intel-derived
+	* generic/tclUnixCompat.c:	processors, both 32-bit and 64-bit.
+	* generic/tclTest.c:		Move cpuid testcase from win-specific
+	* win/tclWinTest.c:		to generic tests, as it should work on
+	* tests/platform.test:		all Intel-related platforms now
+
+2012-04-27  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclPort.h:    Move CYGWIN-specific stuff from tclPort.h to
+	* generic/tclEnv.c:     tclUnixPort.h, where it belongs.
+	* unix/tclUnixPort.h:
+	* unix/tclUnixFile.c:
 
 2012-04-27  Donal K. Fellows  <dkf@users.sf.net>
 
 	* library/init.tcl (auto_execok): Allow shell builtins to be detected
 	even if they are upper-cased.
 
+2012-04-26  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclStubInit.c:    get rid of _ANSI_ARGS_
+	* generic/tclIntPlatDecls.h
+	* unix/tclUnixPort.h
+	* unix/tclAppInit.c
+	* win/tclAppInit.c
+
 2012-04-24  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclInt.decls:      [Bug 3508771] load tclreg.dll in cygwin tclsh
-	* generic/tclIntPlatDecls.h: Implement TclWinGetSockOpt, TclWinGetServByName
-	* generic/tclStubInit.c:     and TclWinCPUID for Cygwin
-	* generic/tclUnixCompat.c:
+	* generic/tclInt.decls:		[Bug 3508771]: load tclreg.dll in
+	* generic/tclIntPlatDecls.h:	cygwin tclsh. Implement
+	* generic/tclStubInit.c:	TclWinGetSockOpt, TclWinGetServByName
+	* generic/tclUnixCompat.c:	and TclWinCPUID for Cygwin.
 	* unix/configure.in:
 	* unix/configure:
 	* unix/tclUnixCompat.c:
 
+2012-04-18  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/tzdata/Africa/Casablanca:
+	* library/tzdata/America/Port-au-Prince:
+	* library/tzdata/Asia/Damascus:
+	* library/tzdata/Asia/Gaza:
+	* library/tzdata/Asia/Hebron: tzdata2012c
+
 2012-04-16  Donal K. Fellows  <dkf@users.sf.net>
 
 	* doc/FileSystem.3 (Tcl_FSOpenFileChannelProc): [Bug 3518244]: Fixed
@@ -246,7 +583,7 @@
 
 2012-04-11  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinInit.c:     [Bug 3448512]: clock scan "1958-01-01" fails only
+	* win/tclWinInit.c:     [Bug 3448512]: [clock scan 1958-01-01] fails
 	* win/tcl.m4:           in debug compilation.
 	* win/configure:
 	* unix/tcl.m4:          Use NDEBUG consistantly meaning: no debugging.
@@ -254,92 +591,131 @@
 
 2012-04-04  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinSock.c:     [Bug 510001]: TclSockMinimumBuffers needs plat imp
-	* generic/tclIOSock.c:
+	* win/tclWinSock.c:	[Bug 510001]: TclSockMinimumBuffers needs
+	* generic/tclIOSock.c:	platform implementation.
 	* generic/tclInt.decls:
 	* generic/tclIntDecls.h:
-	* generic/ttclStubInit.c:
+	* generic/tclStubInit.c:
 
 2012-04-03  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* tools/genStubs.tcl:        Let genStubs.tcl do the void -> VOID and
-	const -> CONST translations, so we cannot forget it in the *.decls file
-	* generic/tcl.decls:         VOID -> void and CONST -> const, so depend
-	* generic/tclInt.decls:      on genStubs.tcl to generate the correct form
-	form in the *Decls.h file. This brings tclInt.decls in the same form as
-	Tcl 8.5/8.6, so a diff can show us the real signature differences.
-	(Backported from Tcl 8.5, no change in any function signature)
-	* generic/tclStubInit.c      Remove the TclpGetTZName implementation for
-	* generic/tclIntDecls.h:     Cygwin (from previous commit) , re-generated
-	* generic/tclIntPlatDecls.h:
-	* generic/tclDecls.h
+	* generic/tclStubInit.c:	Remove the TclpGetTZName implementation
+	* generic/tclIntDecls.h:	for Cygwin (from previous commit) ,
+	* generic/tclIntPlatDecls.h:	re-generated
+	* generic/tcl.decls:		cleanup unnecessary "generic" argument
 
 2012-03-30  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclInt.decls:      [Bug 3508771] load tclreg.dll in cygwin tclsh
-	* generic/tclIntPlatDecls.h: Implement TclWinGetTclInstance, TclpGetTZName,
-	* generic/tclStubInit.c:     and various more win32-specific internal functions for
-	Cygwin, so win32 extensions using those can be loaded in the cygwin version of tclsh.
+	* generic/tclInt.decls:		[Bug 3508771]: load tclreg.dll in
+	* generic/tclIntPlatDecls.h:	cygwin tclsh.  Implement
+	* generic/tclStubInit.c:	TclWinGetTclInstance, TclpGetTZName,
+	and various more win32-specific internal functions for Cygwin, so
+	win32 extensions using those can be loaded in the cygwin version of
+	tclsh.
 
-2012-03-29  Jan Nijtmans  <nijtmans@users.sf.net>
+2012-03-30  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* unix/tcl.m4:               [Bug 3511806] Compiler checks too early
+	* unix/tcl.m4:               [Bug 3511806]: Compiler checks too early
 	* unix/configure.in:         This change allows to build the cygwin
-	* unix/configure:            and mingw32 ports of Tcl/Tk to build
+	* unix/tclUnixPort.h:        and mingw32 ports of Tcl/Tk to build
 	* win/tcl.m4:                out-of-the-box using a native or cross-
 	* win/configure.in:          compiler.
-	* win/configure:
+	* win/tclWinPort.h:          (autoconf still to be run!)
 
 2012-03-27  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tcl.h:             [Bug 3508771] Wrong Tcl_StatBuf used on MinGW
-	* generic/tclFCmd.c:         [Bug 2015723] duplicate inodes from file stat on windows
+	* generic/tcl.h:	[Bug 3508771]: Wrong Tcl_StatBuf used on MinGW
+	* generic/tclFCmd.c:	[Bug 2015723]: duplicate inodes from file stat
+	on windows (but now for cygwin as well)
+
+2012-03-25  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclInt.decls:		[Bug 3508771]: load tclreg.dll in
+	* generic/tclIntPlatDecls.h:	cygwin tclsh.  Implement
+	* generic/tclStubInit.c:	TclWinConvertError,
+	* unix/Makefile.in:		TclWinConvertWSAError, and various
+	* unix/tcl.m4:			more win32-specific internal functions
+	* unix/configure:		for Cygwin, so win32 extensions using
+	* win/tclWinError.c:		those can be loaded in the cygwin
+					version of tclsh.
 
-2012-03-24  Jan Nijtmans  <nijtmans@users.sf.net>
+2012-03-23  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclInt.decls:      [Bug 3508771] load tclreg.dll in cygwin tclsh
-	* generic/tclIntPlatDecls.h: Implement TclWinConvertError, TclWinConvertWSAError,
-	* generic/tclStubInit.c:     and various more win32-specific internal functions for
-	* unix/Makefile.in:          Cygwin, so win32 extensions using those can be
-	* unix/tcl.m4:               loaded in the cygwin version of tclsh.
+	* generic/tclInt.decls:		Revert some cygwin-related signature
+	* generic/tclIntPlatDecls.h:	changes from [835f8e1e9d] (2010-02-01).
+	* win/tclWinError.c:		They were an attempt to make the cygwin
+	port compile again, but since cygwin is based on unix this serves no
+	purpose any more.
+
+	* unix/Makefile.in:		Add tclWinError.c to the CYGWIN build.
+	* unix/tcl.m4:
 	* unix/configure:
-	* win/tclWinError.c:
 
 2012-03-20  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tcl.h:             [Bug 3288345] Wrong Tcl_StatBuf used on Cygwin
+	* generic/tcl.decls:		[Bug 3508771]: load tclreg.dll in
+	* generic/tclInt.decls:		cygwin tclsh. Implement
+	* generic/tclIntPlatDecls.h:	TclWinGetPlatformId,Tcl_WinUtfToTChar,
+	* generic/tclPlatDecls.h:	Tcl_WinTCharToUtf (and a dummy
+	* generic/tclStubInit.c:	TclWinCPUID) for Cygwin, so win32
+	* unix/tclUnixCompat.c:		extensions using those can be loaded
+					in the cygwin version of tclsh.
+
+2012-03-19  Venkat Iyer <venkat@comit.com>
+
+	* library/tzdata/America/Atikokan: Update to tzdata2012b.
+	* library/tzdata/America/Blanc-Sablon
+	* library/tzdata/America/Dawson_Creek
+	* library/tzdata/America/Edmonton
+	* library/tzdata/America/Glace_Bay
+	* library/tzdata/America/Goose_Bay
+	* library/tzdata/America/Halifax
+	* library/tzdata/America/Havana
+	* library/tzdata/America/Moncton
+	* library/tzdata/America/Montreal
+	* library/tzdata/America/Nipigon
+	* library/tzdata/America/Rainy_River
+	* library/tzdata/America/Regina
+	* library/tzdata/America/Santiago
+	* library/tzdata/America/St_Johns
+	* library/tzdata/America/Swift_Current
+	* library/tzdata/America/Toronto
+	* library/tzdata/America/Vancouver
+	* library/tzdata/America/Winnipeg
+	* library/tzdata/Antarctica/Casey
+	* library/tzdata/Antarctica/Davis
+	* library/tzdata/Antarctica/Palmer
+	* library/tzdata/Asia/Yerevan
+	* library/tzdata/Atlantic/Stanley
+	* library/tzdata/Pacific/Easter
+	* library/tzdata/Pacific/Fakaofo
+	* library/tzdata/America/Creston: (new)
+
+2012-03-15  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tcl.h: [Bug 3288345]: Wrong Tcl_StatBuf used on Cygwin
 	* unix/tclUnixFile.c
 	* unix/tclUnixPort.h
-	* win/tclWinFile.c           Remove cygwin stuff no longer needed
+	* win/cat.c:           Remove cygwin stuff no longer needed
+	* win/tclWinFile.c
 	* win/tclWinPort.h
 
-	* generic/tcl.decls:         [Bug 3508771] load tclreg.dll in cygwin tclsh
-	* generic/tclInt.decls:      Implement TclWinGetPlatformId, Tcl_WinUtfToTChar,
-	* generic/tclIntPlatDecls.h: Tcl_WinTCharToUtf (and a dummy TclWinCPUID) for
-	* generic/tclPlatDecls.h:    Cygwin, so win32 extensions using those can be
-	* generic/tclStubInit.c:     loaded in the cygwin version of tclsh.
-	* unix/tclUnixCompat.c:
-
 2012-03-12  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinFile.c: [Bug 3388350] mingw64 compiler warnings
+	* win/tclWinFile.c: [Bug 3388350]: mingw64 compiler warnings
 
 2012-03-07  Andreas Kupries  <andreask@activestate.com>
 
 	* library/http/http.tcl: [Bug 3498327]: Generate upper-case
 	* library/http/pkgIndex.tcl: hexadecimal output for compliance
-	* tests/http.test: with RFC 3986. Bumped version to 2.5.7.
+	* tests/http.test: with RFC 3986. Bumped version to 2.7.9.
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
 2012-03-06  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* win/tclWinPort.h: Compatibility with older Visual Studio versions.
 
-2012-03-04  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
-	* unix/tclUnixChan.c: TclUnixWaitForFile(): use FD_* macros
-	* macosx/tclMacOSXNotify.c: to manipulate select masks (Cassoff).
-	[Bug  3486554].  Backport  of  das' checkin  [e496f9ef50].  Allows
-	Tcl8.4 to have sane fileevents on x86_64 at last.
-
 2012-03-04  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* generic/tclLoad.c: Patch from the cygwin folks
@@ -348,24 +724,46 @@
 
 2012-02-29  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclIOUtil.c:	[Bug 3466099] BOM in Unicode
+	* generic/tclIOUtil.c:	[Bug 3466099]: BOM in Unicode
 	* generic/tclEncoding.c:
 	* tests/source.test
 
+2012-02-23  Donal K. Fellows  <dkf@users.sf.net>
+
+	* tests/reg.test (14.21-23): Add tests relating to bug 1115587. Actual
+	bug is characterised by test marked with 'knownBug'.
+
+2012-02-17  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tclIOUtil.c: [Bug 2233954]: AIX: compile error
+	* unix/tclUnixPort.h:
+
+2012-02-15  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCompCmds.c (TclCompileDictForCmd): [Bug 3487626]: Fix
+	crash in compilation of [dict for] when its implementation command is
+	used directly rather than through the ensemble.
+
 2012-02-09  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclStringObj.c:	[Bug 3484402] Correct Off-By-One
+	* generic/tclStringObj.c:	[Bug 3484402]: Correct Off-By-One
 	error appending unicode. Thanks to Poor Yorick. Also corrected test
 	for when growth is needed.
 
 2012-02-06  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c:	[Bug 3484621] Invalidate bytecode when exec
-	* tests/trace.test:	traces are added/removed from compiled cmd.
+	* generic/tclCompCmds.c: [Bug 3485022]: TclCompileEnsemble() avoid
+	* tests/trace.test:	compile when exec traces set.
+
+2012-02-06  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclTrace.c:  Fix for [Bug 3484621]: insure that
+	* tests/trace.test:    execution traces on bytecoded commands bump
+	the interp's compile epoch.
 
 2012-02-02  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclUniData.c: [Frq 3464401] Support Unicode 6.1
+	* generic/tclUniData.c: [FRQ 3464401]: Support Unicode 6.1
 	* generic/regc_locale.c:
 
 2012-02-02  Don Porter  <dgp@users.sourceforge.net>
@@ -375,8 +773,17 @@
 	queries file permissions on Windows native filesystems.  Meant to
 	fix numerous bugs where [file writable|readable|executable] "lies"
 	about what operations are possible, especially when the file resides
-	on a Samba share.  Patch cherrypicked off the fix-win-native-access
-	branch.
+	on a Samba share.  Patch merged from the fix-win-native-access branch.
+
+2012-02-01  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/AddErrInfo.3: [Bug 3482614]: Documentation nit.
+
+2012-01-26  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclPathObj.c:	[Bug 3475569]: Add checks for unshared values
+	before calls demanding them.  [Bug 3479689]: Stop memory corruption
+	when shimmering 0-refCount value to "path" type.
 
 2012-01-22  Jan Nijtmans  <nijtmans@users.sf.net>
 
@@ -386,24 +793,38 @@
 	* generic/tclUtf.c:      Done in all branches in order to simplify
 	* generic/regc_locale.c: merges for new Unicode versions (such as 6.1)
 
-2012-01-19  Jan Nijtmans  <nijtmans@users.sf.net>
+2012-01-22  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclDictObj.c (DictExistsCmd): [Bug 3475264]: Ensure that
+	errors only ever happen when insufficient arguments are supplied, and
+	not when a path doesn't exist or a dictionary is poorly formatted (the
+	two cases can't be easily distinguished).
 
-	* generic/tcl.h:        [Bug-3474726]: Eliminate detection of struct
+2012-01-21  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/tcl.h:        [Bug 3474726]: Eliminate detection of struct
 	* generic/tclWinPort.h: _stat32i64, just use _stati64 in combination
 	* generic/tclFCmd.c:    with _USE_32BIT_TIME_T, which is the same then.
 	* generic/tclTest.c:    Only keep _stat32i64 usage for cygwin, so it
 	* win/configure.in:     will not conflict with cygwin's own struct stat.
 	* win/configure:
 
-2012-01-19  Don Porter  <dgp@users.sourceforge.net>
+2012-01-21  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c:	[Bug 3475667] Prevent buffer read overflow.
+	* generic/tclCmdMZ.c:	[Bug 3475667]: Prevent buffer read overflow.
 	Thanks to "sebres" for the report and fix.
 
+2012-01-17  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/dict.n (dict with): [Bug 3474512]: Explain better what is going
+	on when a dictionary key and the dictionary variable collide.
+
 2012-01-17  Don Porter  <dgp@users.sourceforge.net>
 
-	* library/http/http.tcl:	Bump to 2.5.6.
+	* library/http/http.tcl:	Bump to version 2.7.8
 	* library/http/pkgIndex.tcl:
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
 2012-01-13  Donal K. Fellows  <dkf@users.sf.net>
 
@@ -412,25 +833,47 @@
 
 2012-01-09  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclUtf.c:      [Bug 3464428] string is graph \u0120 is wrong
-	* generic/regcomp.c:     Remove some unused code
+	* generic/tclUtf.c:      [Bug 3464428]: string is graph \u0120 is wrong
 	* generic/regc_locale.c: Add table for Unicode [:cntrl:] class
 	* tools/uniClass.tcl:    Generate Unicode [:cntrl:] class table
 	* tests/utf.test:
-	* doc/re_syntax:         Fix [:print:] class description
+
+2012-01-08  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl (ReadZoneinfoFile): Corrected a bug where loading
+	* tests/clock.test (clock-56.4):        zoneinfo would fail if one
+	timezone abbreviation was a proper tail of another, and zic used the
+	same bytes of the file to represent both of them.  Added a test case
+	for the bug, using the same data that caused the observed failure
+	"in the wild." [Bug 3470928]
+
+2011-12-30  Venkat Iyer <venkat@comit.com>
+
+	* library/tzdata/America/Bahia : Update to Olson's tzdata2011n
+	* library/tzdata/America/Havana
+	* library/tzdata/Europe/Kiev
+	* library/tzdata/Europe/Simferopol
+	* library/tzdata/Europe/Uzhgorod
+	* library/tzdata/Europe/Zaporozhye
+	* library/tzdata/Pacific/Fiji
 
 2011-12-23  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclUtf.c:     [Bug 3464428] string is graph \u0120 is wrong
+	* generic/tclUtf.c:     [Bug 3464428]: string is graph \u0120 is wrong
 	* generic/tclUniData.c:
 	* generic/regc_locale.c:
 	* tests/utf.test:
 	* tools/uniParse.tcl:   clean up some unused stuff, and be more robust
 	against changes in UnicodeData.txt syntax
 
+2011-12-11  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* generic/regc_locale.c: [Bug 3457031]: Some Unicode 6.0 chars not
+	* tests/utf.test:        in [:print:] class
+
 2011-12-07  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* tools/uniParse.tcl:    [Bug 3444754] string tolower \u01c5 is wrong
+	* tools/uniParse.tcl:    [Bug 3444754]: string tolower \u01c5 is wrong
 	* generic/tclUniData.c:
 	* tests/utf.test:
 
@@ -438,135 +881,253 @@
 
 	* library/tcltest/tcltest.tcl: [Bug 967195]: Make tcltest work
 	when tclsh is compiled without using the setargv() function on mingw.
-	(no need to incr the version, since 2.2.10 is never released)
 
 2011-11-29  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* doc/tclsh.1:  Use the same shebang comment everywhere.
 	* tools/str2c
 	* tools/tcltk-man2html.tcl
+	* win/Makefile.in: don't install tommath_(super)?class.h
+	* unix/Makefile.in: don't install directories like 8.2 and 8.3
 
 2011-11-22  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclCmdAH.c:   [Bug 3354324] Windows: file mtime
-	* generic/tclIOUtil.c:  sets wrong time
+	* win/tclWinPort.h:   [Bug 3354324]: Windows: file mtime
+	* win/tclWinFile.c:  sets wrong time (VS2005+ only)
+	* generic/tclTest.c:
+
+2011-11-04  Don Porter  <dgp@users.sourceforge.net>
+
+	*** 8.5.11 TAGGED FOR RELEASE ***
+
+	* generic/tcl.h:	Bump to 8.5.11 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
+	* README:
+
+	* unix/configure:	autoconf-2.59
+	* win/configure:
+
+	* changes:	Update for 8.5.11 release.
+
+2011-10-20  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/http/http.tcl:	Bump to version 2.7.7
+	* library/http/pkgIndex.tcl:
+	* unix/Makefile.in:
+	* win/Makefile.in:
+
+	* changes:	Updates for 8.5.11 release.
+
+2011-10-18  Reinhard Max  <max@suse.de>
+
+	* library/clock.tcl (::tcl::clock::GetSystemTimeZone): Cache the
+	time zone only if it was detected by one of the expensive
+	methods. Otherwise after unsetting TCL_TZ or TZ the previous value
+	will still be used.
+
+2011-10-15  Venkat Iyer <venkat@comit.com>
+	* library/tzdata/America/Sitka : Update to Olson's tzdata2011l
+	* library/tzdata/Pacific/Fiji
+	* library/tzdata/Asia/Hebron (New)
 
 2011-10-11  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinFile.c:    [Bug 2935503] Incorrect mode field
+	* win/tclWinFile.c:    [Bug 2935503]: Incorrect mode field
 	returned by file stat command
 
 2011-10-07  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinChan.c:    Fix various gcc warnings
-	* win/tclWinConsole.c: (discovered with latest
-	* win/tclWinNotify.c:  mingw, based on gcc 4.6.1)
-	* win/tclWinReg.c:
-	* tests/env.test:      Fix env.test, when running
-	under wine 1.3 (partly backported from Tcl 8.6)
+	* generic/tclIORChan.c:	Fix gcc warning (discovered with latest
+	mingw, based on gcc 4.6.1)
+	* tests/env.test:	Fix env.test running under wine 1.3 (partly
+	backported from Tcl 8.6)
+
+2011-10-03  Venkat Iyer <venkat@comit.com>
 
-2011-09-26  Jan Nijtmans  <nijtmans@users.sf.net>
+	* library/tzdata/Africa/Dar_es_Salaam: Update to Olson's tzdata2011k
+	* library/tzdata/Africa/Kampala
+	* library/tzdata/Africa/Nairobi
+	* library/tzdata/Asia/Gaza
+	* library/tzdata/Europe/Kaliningrad
+	* library/tzdata/Europe/Kiev
+	* library/tzdata/Europe/Minsk
+	* library/tzdata/Europe/Simferopol
+	* library/tzdata/Europe/Uzhgorod
+	* library/tzdata/Europe/Zaporozhye
+	* library/tzdata/Pacific/Apia
 
-	* win/rules.vc:  Support Visual Studio 11
+2011-09-16  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclProc.c (ProcWrongNumArgs): [Bugs 3400658,3408830]:
+	Corrected the handling of procedure error messages (found by TclOO).
 
 2011-09-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
 	* generic/tcl.h:        Don't change Tcl_UniChar type when
 	* generic/regcustom.h:  TCL_UTF_MAX == 4 (not supported anyway)
 
+2011-09-16  Donal K. Fellows  <dkf@users.sf.net>
+
+	* library/http/http.tcl (http::geturl): [Bug 3391977]: Ensure that the
+	-headers option overrides the -type option (important because -type
+	has a default that is not always appropriate, and the header must not
+	be duplicated).
+
 2011-09-13  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclUtil.c:	[Bug 3390638] Workaround broken solaris
+	* generic/tclUtil.c:	[Bug 3390638]: Workaround broken solaris
 	studio cc optimizer.  Thanks to Wolfgang S. Kechel.
 
-	* generic/tclDTrace.d:	[Bug 3405652] Portability workaround for
+	* generic/tclDTrace.d:	[Bug 3405652]: Portability workaround for
 	broken system DTrace support.  Thanks to Dagobert Michelson.
 
 2011-09-12  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinPort.h: [Bug 3407070] tclPosixStr.c won't build with
+	* win/tclWinPort.h: [Bug 3407070]: tclPosixStr.c won't build with
 	EOVERFLOW==E2BIG
 
-2011-09-06  Jan Nijtmans  <nijtmans@users.sf.net>
+2011-09-07  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tcl.decls: Tcl_HashStats does not return a CONST
-	* generic/tclDecls.h: (Backported from Tcl 8.5)
-	* generic/tclHash.c:
-	* generic/tclVar.c:
-	* unix/tcl.m4:    Add --disable-rpath option to configure
-	* unix/configure: script (backported from Tcl 8.5)
+	* generic/tclCompExpr.c: [Bug 3401704]: Allow function names like
+	* tests/parseExpr.test:	 influence(), nanobot(), and 99bottles()
+	that have been parsed as missing operator syntax errors before
+	with the form NUMBER + FUNCTION.
+	***POTENTIAL INCOMPATIBILITY***
 
-2011-08-30  Jan Nijtmans  <nijtmans@users.sf.net>
+2011-09-06  Venkat Iyer <venkat@comit.com>
 
-	* unix/tcl.m4:    Make SHLIB_LD_LIBS='${LIBS}' the default and
-	* unix/configure: set to "" on per-platform necessary basis.
-	Add Haiku support and better NetBSD/FreeBSD support.
-	All of this backported from TEA resp. Tcl8.5, but kept all
-	original platform code which was removed from TEA.
+	* library/tzdata/America/Goose_Bay: Update to Olson's tzdata2011i
+	* library/tzdata/America/Metlakatla:
+	* library/tzdata/America/Resolute:
+	* library/tzdata/America/St_Johns:
+	* library/tzdata/Europe/Kaliningrad:
+	* library/tzdata/Pacific/Apia:
+	* library/tzdata/Pacific/Honolulu:
+	* library/tzdata/Africa/Juba: (new)
+
+2011-09-01  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclStrToD.c:	[Bug 3402540]: Corrections to TclParseNumber()
+	* tests/binary.test:	to make it reject invalid Nan(Hex) strings.
+
+	* tests/scan.test:	[scan Inf %g] is portable; remove constraint.
+
+2011-08-30  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclInterp.c (SlaveCommandLimitCmd, SlaveTimeLimitCmd):
+	[Bug 3398794]: Ensure that low-level conditions in the limit API are
+	enforced at the script level through errors, not a Tcl_Panic. This
+	means that interpreters cannot read their own limits (writing already
+	did not work).
 
-2011-08-22  Andreas Kupries  <andreask@activestate.com>
+2011-08-19  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	* win/tclWinDde.c (Tcl_DdeObjCmd): Fixed use of the C99 feature
-	(Variable declaration within statement block) rejected by
-	MSVC6. Moved the declaration to the beginning of the block.
+	* generic/tclTest.c: [Bug 2981154]: async-4.3 segfault.
+	* tests/async.test:  [Bug 1774689]: async-4.3 sometimes fails.
 
 2011-08-18  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclUniData.c: [Bug 3393714] overflow in toupper delta
+	* generic/tclUniData.c: [Bug 3393714]: Overflow in toupper delta
 	* tools/uniParse.tcl
 	* tests/utf.test
 
+2011-08-17  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclGet.c: [Bug 3393150]: Overlooked free of intreps.
+	(It matters for bignums!)
+
 2011-08-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclCmdAH.c:    [Bug 3388350] mingw64 compiler warnings
+	* generic/tclCmdAH.c:    [Bug 3388350]: mingw64 compiler warnings
 	* generic/tclFCmd.c      In mingw, sys/stat.h must be included
 	* generic/tclFileName.c  before winsock2.h, so make sure of that.
 	* generic/tclIOUtil.c
+	* generic/tclBasic.c
+	* generic/tclBinary.c
+	* generic/tclHash.c
 	* generic/tclTest.c
-	* win/tclWin32Dll.c
 	* win/tclWinChan.c
+	* win/tclWinConsole.c
 	* win/tclWinDde.c
-	* win/tclWinFCmd.c
+	* win/tclWinFile.c
+	* win/tclWinReg.c
+	* win/tclWinSerial.c
+	* win/tclWinSock.c
+	* win/tclWinThrd.c
 
 2011-08-15  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclBasic.c: [Bug 3390272] Leak of [info script] value.
+	* generic/tclBasic.c: [Bug 3390272]: Leak of [info script] value.
 
 2011-08-15  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tcl.m4:       [Bug 3388350] mingw64 compiler warnings
+	* win/tclWinPort.h:    [Bug 3388350]: mingw64 compiler warnings
+	* win/tclWinPipe.c
+	* win/tclWinSock.c
 	* win/configure.in
 	* win/configure
-	* win/tclMtherr.c
-	* win/tclWinPort.h
-	* win/tclWinChan.c
+	* generic/tclPosixStr.c
+	* generic/tclStrToD.c
+
+2011-08-12  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclPathObj.c:	[Bug 3389764]: Eliminate possibility that dup
+	of a "path" value can create reference cycle.
+
+2011-08-09  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* win/tclWinConsole.c: [Bug 3388350]: mingw64 compiler warnings
 	* win/tclWinDde.c
-	* win/tclWinFCmd.c
 	* win/tclWinPipe.c
-	* win/tclWinReg.c
 	* win/tclWinSerial.c
-	* win/tclWinSock.c
-	* win/tclWinTest.c
-	* win/tclWinTime.c
-	* generic/tclPosixStr.c
-	* unix/tcl.m4:      Quoting and AC_DEFINE fixes (All backported from
-	* unix/configure    Tcl 8.5
+
+2011-08-05  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclStrToD.c: [Bug 3386975]: Plugged a memory leak in
+	double->string conversion.
+
+2011-07-28  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tzdata/Asia/Anadyr: Update to Olson's tzdata2011h
+	* library/tzdata/Asia/Irkutsk:
+	* library/tzdata/Asia/Kamchatka:
+	* library/tzdata/Asia/Krasnoyarsk:
+	* library/tzdata/Asia/Magadan:
+	* library/tzdata/Asia/Novokuznetsk:
+	* library/tzdata/Asia/Novosibirsk:
+	* library/tzdata/Asia/Omsk:
+	* library/tzdata/Asia/Sakhalin:
+	* library/tzdata/Asia/Vladivostok:
+	* library/tzdata/Asia/Yakutsk:
+	* library/tzdata/Asia/Yekaterinburg:
+	* library/tzdata/Europe/Kaliningrad:
+	* library/tzdata/Europe/Moscow:
+	* library/tzdata/Europe/Samara:
+	* library/tzdata/Europe/Volgograd:
+	* library/tzdata/America/Kralendijk: (new)
+	* library/tzdata/America/Lower_Princes: (new)
 
 2011-07-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/tclWinPort.h: [Bug 3372130] Fix hypot math function with MSVC10
+	* win/tclWinPort.h: [Bug 3372130]: Fix hypot math function with MSVC10
+
+2011-07-19  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclUtil.c:	[Bug 3371644]: Repair failure to properly handle
+	* tests/util.test: (length == -1) scanning in TclConvertElement().
 
 2011-07-15  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/tclCompile.c: Avoid segfaults when RecordByteCodeStats()
 	is called in a deleted interp.
 
-2011-07-13  Don Porter  <dgp@users.sourceforge.net>
+2011-07-08  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclProc.c:	[Bug 3366265] Buffer for storing the command
-	* tests/indexObj.test:	name formatted as a list element is allocated
-	* tests/proc.test:	one byte too small, causing buffer overflow
-	when the proc with the empty name raises a "wrong num args" error.
+	* doc/http.n: [FRQ 3358415]: State what RFC defines HTTP/1.1.
 
 2011-07-03  Donal K. Fellows  <dkf@users.sf.net>
 
@@ -574,11505 +1135,9539 @@
 	stat'; that was always the time of the last metadata change, not the
 	time of creation.
 
-2011-06-22  Andreas Kupries  <andreask@activestate.com>
-
-	* library/platform/pkgIndex.tcl: Updated to platform 1.0.10. Added
-	* library/platform/platform.tcl: handling of the DEB_HOST_MULTIARCH
-	location change for libc.
-
-2011-05-07  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclInt.h: fix USE_TCLALLOC so that it can be enabled
-	* unix/Makefile.in: without editing the Makefile
-
-2011-04-21  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclCompile.c:		Make sure SetFooFromAny routines react
-	* generic/tclIndexObj.c:	reasonably when passed a NULL interp.
-	* generic/tclNamesp.c:
-	* generic/tclObj.c:
-
-2011-04-21  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* generic/tcl.h:       fix for [Bug 3288345]: Wrong Tcl_StatBuf
-	* generic/tclInt.h:    used on MinGW. Make sure that all _WIN32
-	* generic/tclIOUtil.c: compilers use exactly the same layout
-	* win/tclWinFile.c:    for Tcl_StatBuf - the one used by MSVC6 -
-	* win/configure.in:    in all situations.
-	* win/configure:
-
-2011-04-20  Andreas Kupries  <andreask@activestate.com>
-
-	* tests/info.test: Fixed the shift in line numbers used for
-	testing 'info frame' introduced by checkin [79367df0f0]
-	(Mar 2, 2011).
-
-2011-04-13  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclVar.c: fix for [Bug 2662380], crash caused by
-	appending to a variable with a write trace that unsets it.
-
-2011-04-04  Don Porter  <dgp@users.sourceforge.net>
-
-	* README:	Updated README files, repairing broken URLs and
-	* macosx/README:	removing other bits that were clearly wrong.
-	* unix/README:	Still could use more eyeballs on the detailed build
-	* win/README:	advice on various plaforms. [Bug 3202030]
-
-2011-03-25  Jan Nijtmans  <nijtmans@users.sf.net>
+2011-07-02  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclHash.c: [Bug 3007895]: Tcl_(Find|Create)HashEntry
-	stub entries can never be called. They still cannot be called
-	(no change in functionality), but at least they now do
-	exactly the same as the Tcl_(Find|Create)HashEntry macro's,
-	so the confusion addressed in this Bug report is gone.
-	Merged --cherrypick from Tcl8.5 (2010-12-31,e75735ef76)
-
-2011-03-24  Donal K. Fellows  <dkf@users.sf.net>
-
-	* generic/tclFCmd.c (TclFileAttrsCmd): Ensure that any reference to
-	temporary index tables is squelched immediately rather than hanging
-	around to trip us up in the future.
-
-2011-03-16  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* unix/configure, unix/tcl.m4: SHLIB_LD_LIBS='${LIBS}' for OSF1-V*.
-	Add /usr/lib64 to set of auto-search dirs. [Bug 1230554]
-	(SC_PATH_X): Correct syntax error when xincludes not found.
-	Backported from Tcl 8.5
-	* generic/tclCkalloc.c: [Bug #3197864] pointer truncation on Win64
-	TCL_MEM_DEBUG builds
-
-2010-03-11  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* win/tclWin32Dll.c:	#ifdef protections to permit builds with
-	* win/tclWinChan.c:	mingw on amd64 systems. Thanks to "mescalinum"
-	* win/tclWinFCmd.c:	for reporting and testing.
-	Merged --cherrypick from Tcl8.5 (2010-09-08,48191d3979)
-
-2011-03-11  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* win/tcl.m4:         handle --enable-64bit=ia64 for gcc.
-	* win/configure:      (autoconf-2.13)
-	* win/tclWin32Dll.c:  [Patch 3059922]: fixes for mingw64 - gcc4.5.1
-	Merged --cherrypick from Tcl8.5 (2011-01-17, 6e410a115b)
-
-2011-03-08  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* generic/tclBasic.c: Fix gcc warnings: variable set but not used
-
-2011-03-06  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclBasic.c:	More replacements of Tcl_UtfBackslash() calls
-	* generic/tclCmdMZ.c:	with TclParseBackslash() where possible.
-	* generic/tclCompExpr.c:
-	* generic/tclCompile.c:
-	* generic/tclUtil.c (TclFindElement):	Guard escape sequence scans
-	to not overrun the string end.  [Bug 3192636]
-
-2011-03-05  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclParse.c (TclParseBackslash): Correct trunction checks in
-	* tests/parse.test:	\x and \u substitutions.  [Bug 3200987]
-
-2011-01-25  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* generic/tclCkalloc.c:  [Bug 3129448]: Possible over-allocation on 64-bit
-	* generic/tclHash.c:     platforms, part 2, backported strcpy->memcpy
-	* generic/tclProc.c      change but not change in any struct.
-
-2011-01-14  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* win/tclWinDde.c:  Fix gcc-4.5.2 error: lvalue required as ...
-	* win/tclWinReg.c:  (backported from 8.5/8.6)
-
-2010-12-05  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* generic/tclCmdMZ.c: [Bug 3127687] Triggers FORTIFY_SOURCE
-	buffer overflow detection
-
-2010-11-03  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	Backported from 8.6 (see 2010-08-04).
-	* win/tclWin32Dll.c (asciiProcs, unicodeProcs):
-	* win/tclWinLoad.c (TclpDlopen): 'load' use LoadLibraryEx with
-	* win/tclWinInt.h (TclWinProcs): LOAD_WITH_ALTERED_SEARCH_PATH to
-	prefer dependent DLLs in same dir as loaded DLL.
-
-2010-10-31  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* win/tcl.m4     Add -D_CRT_SECURE_NO_DEPRECATE and
-	-D_CRT_NONSTDC_NO_DEPRECATE, reducing the number of
-	deprecation warnings on later VC++ versions.
-	* win/rules.vc   Better VCVERSION determination
-	* win/configure  (regenerated with autoconf 2.13)
-	All changes backported from Tcl8.5/8.6
-
-2010-10-23  Jan Nijtmans  <nijtmans@users.sf.net>
-
-	* tools/uniParse.tcl:   [Bug 3085863]: tclUniData 9 years old
-	* tools/uniClass.tcl:   Upgrade everything to Unicode 6.0, except
-	* tests/utf.test:       non-BMP characters > 0xFFFF
-	* generic/tclUniData.c: (re-generated)
-	* generic/regc_locale.c:(re-generated)
-	* generic/regcomp.c:    fix comment/signatures referencing regc_locale
-	* win/rules.vc          Update for VS10
-
-2010-09-24  Andreas Kupries  <andreask@activestate.com>
-
-	* tclWinsock.c: [Bug 3056775]: Fixed race condition between thread
-	and internal co-thread access of a socket's structure because of
-	the thread not using the socketListLock in TcpAccept(). Added
-	documentation on how the module works to the top.
-
-2010-09-01  Andreas Kupries  <andreask@activestate.com>
-
-	* generic/tclExecute.c: [Bug 3057639]. Applied patch by Jeff to
-	* generic/tclVar.c: make the behaviour of lappend in bytecompiled
-	* tests/append.test: mode consistent with direct-eval and 'append'
-	* tests/appendComp.test: generally. Added tests (append*-9.*)
-	showing the difference.
-
-2010-07-25  Jan Nijtmans  <nijtmans@users.sf.net>
+	* generic/tclStrToD.c:
+	* generic/tclTomMath.decls:
+	* generic/tclTomMathDecls.h:
+	* macosx/Tcl.xcode/project.pbxproj:
+	* macosx/Tcl.xcodeproj/project.pbxproj:
+	* tests/util.test:
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/Makefile.vc:
+	Fix a bug where bignum->double conversion is "round up" and
+	not "round to nearest" (causing expr double(1[string repeat 0 23])
+	not to be 1e+23). [Bug 3349507]
 
-	* generic/tclInt.h: [Bug 3030870] make itcl 3.x built with pre-8.6
-	* generic/tclBasic.c: work in 8.6 revert tclInt.h to what it was
-	before, and relax the relation between Tcl_CallFrame and
-	CallFrame.
+2011-06-30  Reinhard Max  <max@suse.de>
 
-2010-07-18  Jan Nijtmans  <nijtmans@users.sf.net>
+	* unix/configure.in: Add a volatile declaration to the test for
+	TCL_STACK_GROWS_UP to prevent gcc 4.6 from producing invalid
+	results due to aggressive optimisation.
 
-	* generic/tcl.h: [Bug 3031278] fixed merge problem in previous
-	commit.
+2011-06-23  Don Porter  <dgp@users.sourceforge.net>
 
-2010-07-17  Jan Nijtmans  <nijtmans@users.sf.net>
+	*** 8.5.10 TAGGED FOR RELEASE ***
 
-	* generic/tcl.h: [Bug 3030870] make itcl 3.x built with pre-8.6
-	* generic/tclInt.h: work in 8.6
+	* changes:	Update for 8.5.10 release.
 
-2010-07-16  Jan Nijtmans  <nijtmans@users.sf.net>
+2011-06-22  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tcl.h: (Backport) take over definitions of _WIN32,
-	DLLIMPORT, DLLEXPORT and TCL_LL_MODIFIER macros from Tcl8.5/8.6
+	* library/platform/pkgIndex.tcl: Updated to platform 1.0.10. Added
+	* library/platform/platform.tcl: handling of the DEB_HOST_MULTIARCH
+	* unix/Makefile.in: location change for libc.
+	* win/Makefile.in:
 
-2010-06-28  Jan Nijtmans  <nijtmans@users.sf.net>
+	* generic/tclInt.h: Fixed the inadvertently committed disabling of
+	  stack checks, see my 2010-11-15 commit.
 
-	* generic/tclPosixStr.c: [Bug 3019634] errno.h and tclWinPort.h
-	have conflicting definitions.
+2011-06-21  Don Porter  <dgp@users.sourceforge.net>
 
-2010-06-09  Andreas Kupries  <andreask@activestate.com>
+	* changes:	Update for 8.5.10 release.
 
-	* library/platform/platform.tcl: Added OSX Intel 64bit
-	* library/platform/pkgIndex.tcl: Package updated to version 1.0.9.
+	* library/tcltest/tcltest.tcl (loadIntoSlaveInterpreter):
+	* library/tcltest/pkgIndex.tcl: Backport tcltest 2.3.3 for release
+	* unix/Makefile.in: with Tcl 8.5.*.
+	* win/Makefile.in:
 
-2010-05-07  Andreas Kupries  <andreask@activestate.com>
+	* tests/init.test:	Update test files to use new command.
+	* tests/pkg.test:
 
-	* library/platform/platform.tcl: Fix cpu name for Solaris/Intel 64bit.
-	* library/platform/pkgIndex.tcl: Package updated to version 1.0.8.
+	* generic/tclLink.c:	Prevent multiple links to a single Tcl
+	variable when calling Tcl_LinkVar(). [Bug 3317466]
 
-2010-04-29  Andreas Kupries  <andreask@activestate.com>
+2011-06-13  Don Porter  <dgp@users.sourceforge.net>
 
-	* library/platform/platform.tcl: Another stab at getting the /lib,
-	* library/platform/pkgIndex.tcl: /lib64 difference right for
-	linux. Package updated to version 1.0.7.
+	* generic/tclStrToD.c:  [Bug 3315098]: Mem leak fix from Gustaf
+	Neumann.
 
-2010-04-18  Donal K. Fellows  <dkf@users.sf.net>
+2011-06-02  Don Porter  <dgp@users.sourceforge.net>
 
-	* doc/unset.n: [Bug 2988940]: Fix typo.
+	* generic/tclBasic.c:	Removed TclCleanupLiteralTable(), and old
+	* generic/tclInt.h:	band-aid routine put in place while a fix
+	* generic/tclLiteral.c:	for [Bug 994838] took shape.  No longer needed.
 
-2010-04-14  Andreas Kupries  <andreask@activestate.com>
+2011-06-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* library/platform/platform.tcl: Linux platform identification:
-	* library/platform/pkgIndex.tcl: Check /lib64 for existence of
-	files matching libc* before accepting it as base directory. This
-	can happen on weirdly installed 32bit systems which have an empty
-	or partially filled /lib64 without an actual libc. Bumped to
-	version 1.0.6.
+	* generic/tclInt.h (TclInvalidateNsCmdLookup): [Bug 3185407]: Extend
+	the set of epochs that are potentially bumped when a command is
+	created, for a slight performance drop (in some circumstances) and
+	improved semantics.
 
-2010-04-06  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2011-06-01  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): fixed object leak.
+	* generic/tclUtil.c:   Fix for [Bug 3309871]: Valgrind finds:
+	invalid read in TclMaxListLength()
 
-2010-04-02  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2011-05-25  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclStringObj.c: (SetStringFromAny): avoid trampling
-	over the tclEmptyStringRep->bytes as it is thread-shared
-	(thx to Gustaf Neumann for the (hard) work of locating this one).
+	* library/msgcat/msgcat.tcl:	Backport improvements to msgcat
+	* library/msgcat/pkgIndex.tcl:	package.  Bump to 1.4.4
+	* unix/Makefile.in
+	* win/Makefile.in
 
-2010-03-01  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
+2011-05-24  Venkat Iyer <venkat@comit.com>
 
-	* unix/tclUnixChan.c: [backported] Refrain from a possibly lengthy
-	reverse-DNS lookup on 0.0.0.0 when calling [fconfigure -sockname]
-	on an universally-bound (default) server socket.
+	* library/tzdata/Africa/Cairo: Update to Olson tzdata2011g
 
-2010-02-22  Jan Nijtmans  <nijtmans@users.sf.net>
+2011-05-17  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclExecute.c:   Fix [Bug 2954959] expr abs(-0.0) is -0.0
-	* tests/expr.test         Added some test cases, backported from 8.5
+	* generic/tclCompile.c (TclFixupForwardJump): Tracked down and fixed
+	* generic/tclBasic.c (TclArgumentBCEnter): the cause of a violation
+	of my assertion that 'ePtr->nline == objc' in TclArgumentBCEnter.
+	When a bytecode was grown during jump fixup the pc -> command line
+	mapping was not updated. When things aligned just wrong the mapping
+	would direct command A to the data for command B, with a different
+	number of arguments.
 
-2010-02-11  Andreas Kupries  <andreask@activestate.com>
+2011-05-10  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclCompile.c: [Bug 2949302]: Fixed leak of support
-	structures for [info frame] which occured when bytecode
-	compilation fails.
+	* generic/tclInt.h:     New internal routines TclScanElement() and
+	* generic/tclUtil.c:    TclConvertElement() are rewritten guts of
+	machinery to produce string rep of lists.  The new routines avoid
+	and correct [Bug 3173086].  See comments for much more detail.
 
-2010-02-01  Donal K. Fellows  <dkf@users.sf.net>
+	* generic/tclDictObj.c:         Update all callers.
+	* generic/tclIndexObj.c:
+	* generic/tclListObj.c:
+	* generic/tclUtil.c:
+	* tests/list.test:
 
-	* generic/regexec.c (ccondissect, crevdissect): [Bug 2942697]: Rework
-	these functions so that certain pathological patterns are matched much
-	more rapidly. Many thanks to Tom Lane for dianosing this issue and
-	providing an initial patch.
+2011-05-09  Don Porter  <dgp@users.sourceforge.net>
 
-2009-11-16  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
+	* generic/tclListObj.c:	Revise empty string tests so that we avoid
+	potentially expensive string rep generations, especially for dicts.
 
-	* generic/tclEncoding.c: (Backport) Fix [Bug 2891556] and improve
-	* tests/econding.test:   test to detect similar manifestations in the
-				 future.
+2011-05-07  Miguel Sofer  <msofer@users.sf.net>
 
-2009-11-12  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclInt.h: fix USE_TCLALLOC so that it can be enabled
+	* unix/Makefile.in: without editing the Makefile
 
-	* generic/tclIO.c (CopyData): [Bug 2895565]. Dropped bogosity
-	* tests/io.test: which used the number of _written_ bytes or
-	character to update the counters for the read bytes/characters.
-	New test io-53.11. This is a backward port from the 8.5 branch.
+2011-05-05  Don Porter  <dgp@users.sourceforge.net>
 
-2009-11-10  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* generic/tclListObj.c:	Stop generating string rep of dict when
+	converting to list.  Tolerate NULL interps more completely.
 
-	* tests/fCmd.test:     Fixed a number of issues for Vista
-	* tests/registry.test: and Win7 that are due to restricted
-	* tests/tcltest.test:  permissions under UAC.
-	* tests/winFCmd.test:
+2011-05-03  Don Porter  <dgp@users.sourceforge.net>
 
-2009-11-10  Stuart Cassoff <stwo@users.sf.net>
+	* generic/tclUtil.c:	Tighten Tcl_SplitList().
+	* generic/tclListObj.c:	Tighten SetListFromAny().
+	* generic/tclDictObj.c:	Tighten SetDictFromAny().
 
-	* win/README: [bug 2459744]: Removed outdated Msys + Mingw info.
+2011-05-02  Don Porter  <dgp@users.sourceforge.net>
 
-2009-11-10  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCmdMZ.c:	Revised TclFindElement() interface.  The
+	* generic/tclDictObj.c:	final argument had been bracePtr, the address
+	* generic/tclListObj.c:	of a boolean var, where the caller can be told
+	* generic/tclParse.c:	whether or not the parsed list element was
+	* generic/tclUtil.c:	enclosed in braces.  In practice, no callers
+	really care about that.  What the callers really want to know is
+	whether the list element value exists as a literal substring of the
+	string being parsed, or whether a call to TclCopyAndCollpase() is
+	needed to produce the list element value.  Now the final argument
+	is changed to do what callers actually need.  This is a better fit
+	for the calls in tclParse.c, where now a good deal of post-processing
+	checking for "naked backslashes" is no longer necessary.
+	***POTENTIAL INCOMPATIBILITY***
+	For any callers calling in via the internal stubs table who really
+	do use the final argument explicitly to check for the enclosing brace
+	scenario.  Simply looking for the braces where they must be is the
+	revision available to those callers, and it will backport cleanly.
 
-	* generic/tclObj.c: Plug memory leak in TclContinuationsEnter().
-	[Bug 2895323]. Backport from Tcl 8.5 branch, change by Don Porter.
+	* tests/parse.test:	Tests for expanded literals quoting detection.
 
-2009-11-09  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCompCmds.c:	New TclFindElement() is also a better
+	fit for the [switch] compiler.
 
-	* generic/tclBasic.c (TclEvalObjEx): Moved the #280 decrement of
-	refCount for the file path out of the branch after the whole
-	conditional, closing a memory leak. Added clause on structure type
-	to prevent seg.faulting. Backport from valgrinding the Tcl 8.5
-	branch.
+	* generic/tclInt.h:	Replace TclCountSpaceRuns() with
+	* generic/tclListObj.c:	TclMaxListLength() which is the function we
+	* generic/tclUtil.c:	actually want.
+	* generic/tclCompCmds.c:
 
-	* tests/info.test: Resolve ambiguous resolution of variable
-	"res". Backport from 8.5
+	* generic/tclCompCmds.c: Rewrite of parts of the switch compiler to
+	better use the powers of TclFindElement() and do less parsing on
+	its own.
 
-2009-10-23  Andreas Kupries  <andreask@activestate.com>
+2011-04-28  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclCompCmds.c: [Bug 2881263] (TclCompileForeachCmd,
-	TclCompileLindexCmd): Fixed. Moved the use of
-	DefineLineInformation after all regular variable declarations, so
-	that an empty statement (-UTIP_280) doesn't confuse c89 compilers.
+	* generic/tclInt.h:	New utility routines:
+	* generic/tclParse.c:	TclIsSpaceProc() and
+	* generic/tclUtil.c:	TclCountSpaceRuns()
 
-	* library/platform/pkgIndex.tcl: Backported the platform packages
-	* library/platform/platform.tcl: from head and8.5 into the 8.4
-	* library/platform/shell.tcl: branch. Updated makefiles to install
-	* unix/Makfile.in: the packages.
-	* win/Makefile.in:
+	* generic/tclCmdMZ.c:	Use new routines to replace calls to
+	* generic/tclListObj.c:	isspace() and their /* INTL */ risk.
+	* generic/tclStrToD.c:
+	* generic/tclUtf.c:
+	* unix/tclUnixFile.c:
 
-	* generic/tclIO.c (FlushChannel): Skip OutputProc for low-level
-	0-length writes. When closing pipes which have already been closed
-	not skipping leads to spurious SIG_PIPE signals. Reported by
-	Mikhail Teterin <mi+thun@aldan.algebra.com>.
+2011-04-27  Don Porter  <dgp@users.sourceforge.net>
 
-2009-10-21  Donal K. Fellows  <dkf@users.sf.net>
+	* generic/tclListObj.c:	FreeListInternalRep() cleanup.
 
-	* generic/tclPosixStr.c: [Bug 2882561]: Work around oddity on Haiku OS
-	where SIGSEGV and SIGBUS are the same value.
+	* generic/tclBinary.c:	Backport fix for [Bug 2857044].
+	* generic/tclDictObj.c:	All freeIntRepProcs set typePtr to NULL.
+	* generic/tclEncoding.c:
+	* generic/tclIndexObj.c:
+	* generic/tclListObj.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclPathObj.c:
+	* generic/tclProc.c:
+	* generic/tclRegexp.c:
+	* generic/tclStringObj.c:
+	* generic/tclVar.c:
 
-2009-10-18  Joe Mistachkin  <joe@mistachkin.com>
+2011-04-21  Don Porter  <dgp@users.sourceforge.net>
 
-	* tests/thread.test (thread-4.[345]): [Bug 1565466]: Correct tests to
-	save their error state before the final call to threadReap just in case
-	it triggers an "invalid thread id" error.  This error can occur if one
-	or more of the target threads has exited prior to the attempt to send
-	it an asynchronous exit command.
+	* generic/tclInt.h:	Use macro to set List intreps.
+	* generic/tclListObj.c:
 
-2009-10-04  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclCmdIL.c:	Limits on list length were too strict.
+	* generic/tclInt.h:	Revised panics to errors where possible.
+	* generic/tclListObj.c:
 
-	* macosx/tclMacOSXBundle.c:	Workaround CF memory managment bug in
-	* unix/tclUnixInit.c:		Mac OS X 10.4 & earlier. [Bug 2569449]
+	* generic/tclCompile.c:	Make sure SetFooFromAny routines react
+	* generic/tclIO.c:	reasonably when passed a NULL interp.
+	* generic/tclIndexObj.c:
+	* generic/tclListObj.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclProc.c:
+	* macosx/tclMacOSXFCmd.c:
 
-2009-09-28  Don Porter  <dgp@users.sourceforge.net>
+2011-04-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclAlloc.c:		Cleaned up various routines in the
-	* generic/tclCkalloc.c:		call stacks for memory allocation to
-	* generic/tclParse.c:		guarantee that any size values computed
-	* generic/tclThreadAlloc.c:	are within the domains of the routines
-	they get passed to.  [Bugs 2557696 and 2557796].
+	* generic/tcl.h:       fix for [Bug 3288345]: Wrong Tcl_StatBuf
+	* generic/tclInt.h:    used on MinGW. Make sure that all _WIN32
+	* win/tclWinFile.c:    compilers use exactly the same layout
+	* win/configure.in:    for Tcl_StatBuf - the one used by MSVC6 -
+	* win/configure:       in all situations.
 
-2009-09-18  Don Porter  <dgp@users.sourceforge.net>
+2011-04-20  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclCmdMZ.c (Tcl_SubstObj):	Pass 'length' values to
-	recursive parsing calls to convert O(N^2) operations of [subst]
-	to O(N).
+	* generic/tclFCmd.c (TclFileAttrsCmd): Added commands to reset the
+	typePtr of the Tcl_Obj* whose int-rep was just purged. Required to
+	prevent a dangling IndexRep* to reused, smashing the heap. See
+	also the entries at 2011-04-16 and 2011-03-24 for the history of
+	the problem.
 
-2009-08-25  Andreas Kupries  <andreask@activestate.com>
+2011-04-19  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclBasic.c (Tcl_CreateInterp, Tcl_EvalTokensStandard,
-	(EvalTokensStandard, Tcl_EvalEx, EvalEx, TclAdvanceContinuations,
-	(TclEvalObjEx):
-	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd, ListLines):
-	* generic/tclCompCmds.c (*):
-	* generic/tclCompile.c (TclSetByteCodeFromAny, TclInitCompileEnv,
-	(TclFreeCompileEnv, TclCompileScript):
-	* generic/tclCompile.h (CompileEnv):
-	* generic/tclInt.h (ContLineLoc, Interp):
-	* generic/tclObj.c (ThreadSpecificData, ContLineLocFree,
-	(TclThreadFinalizeObjects, TclInitObjSubsystem,
-	(TclContinuationsEnter, TclContinuationsEnterDerived,
-	(TclContinuationsCopy, TclContinuationsGet, TclFreeObj):
-	* generic/tclProc.c (TclCreateProc):
-	* generic/tclVar.c (TclPtrSetVar):
-	* tests/info.test (info-30.0-22):
+	* generic/tclConfig.c:	Reduce internals access in the implementation
+	of [<foo>::pkgconfig list].
 
-	Extended parser, compiler, and execution with code and attendant
-	data structures tracking the positions of continuation lines which
-	are not visible in script's, to properly account for them while
-	counting lines for #280, during direct and compiled execution.
+2011-04-18  Don Porter  <dgp@users.sourceforge.net>
 
-2009-08-17  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdIL.c:	Use ListRepPtr(.) and other cleanup.
+	* generic/tclConfig.c:
+	* generic/tclListObj.c:
 
-	* generic/tclFileName.c: Correct result from [glob */test] when *
-	* tests/fileName.test:	matches something like ~foo.  [Bug 2837800]
+	* generic/tclInt.h:	Define and use macros that test whether
+	* generic/tclBasic.c:	a Tcl list value is canonical.
+	* generic/tclUtil.c:
 
-2009-07-23  Joe Mistachkin  <joe@mistachkin.com>
+2011-04-16  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclNotify.c: Fix for [Bug 2820349].
+	* generic/tclFCmd.c (TclFileAttrsCmd): Tidied up the memory management
+	a bit to try to ensure that the dynamic and static cases don't get
+	confused while still promoting caching where possible. Added a panic
+	to trap problems in the case where an extension is misusing the API.
 
-2009-07-14  Andreas Kupries  <andreask@activestate.com>
+2011-04-13  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclBasic.c (DeleteInterpProc,TclArgumentBCEnter,
-	(TclArgumentBCRelease, TclArgumentGet):
-	* generic/tclCompile.c (EnterCmdWordIndex, TclCleanupByteCode,
-	(TclInitCompileEnv, TclCompileScript):
-	* generic/tclCompile.h (ExtCmdLoc):
-	* generic/tclExecute.c (TclExecuteByteCode):
-	* generic/tclInt.h (ExtIndex, CFWordBC):
-	* tests/info.test (info-39.0):
+	* generic/tclUtil.c:	[Bug 3285375]: Rewrite of Tcl_Concat*()
+	routines to prevent segfaults on buffer overflow.  Build them out of
+	existing primitives already coded to handle overflow properly.  Uses
+	the new TclTrim*() routines.
 
-	Backport of some changes made to the Tcl head, to handle literal
-	sharing better. The code here is much simpler (trimmed down)
-	compared to the head as the 8.4 branch is not bytecode compiling
-	whole files, and doesn't compile eval'd code either.
+	* generic/tclCmdMZ.c:	New internal utility routines TclTrimLeft()
+	* generic/tclInt.h:	and TclTrimRight().  Refactor the
+	* generic/tclUtil.c:	[string trim*] implementations to use them.
 
-	Reworked the handling of literal command arguments in bytecode to
-	be saved (compiler) and used (execution) per command (See the
-	TCL_INVOKE_STK* instructions), and not per the whole bytecode.
-	This removes the problems with location data caused by literal
-	sharing in proc bodies. Simplified the associated datastructures
-	(ExtIndex is gone, as is the function EnterCmdWordIndex).
+2011-04-13  Miguel Sofer  <msofer@users.sf.net>
 
-2009-06-13  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclVar.c: [Bug 2662380]: Fix crash caused by appending to a
+	variable with a write trace that unsets it.
 
-	* generic/tclCompile.c: The value stashed in iPtr->compiledProcPtr
-	* generic/tclProc.c:    when compiling a proc survives too long.  We
-	* tests/execute.test:   only need it there long enough for the right
-	TclInitCompileEnv() call to re-stash it into envPtr->procPtr.  Once
-	that is done, the CompileEnv controls.  If we let the value of
-	iPtr->compiledProcPtr linger, though, then any other bytecode compile
-	operation that takes place will also have its CompileEnv initialized
-	with it, and that's not correct.  The value is meant to control the
-	compile of the proc body only, not other compile tasks that happen
-	along.  Thanks to Carlos Tasada for discovering and reporting the
-	problem.  [Bug 2802881].
+2011-04-12  Don Porter  <dgp@users.sourceforge.net>
 
-2009-04-28  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclStringObj.c:	[Bug 3285472]: Repair corruption in
+	* tests/string.test:	[string reverse] when string rep invalidation
+	failed to also reset the bytes allocated for string rep to zero.
 
-	* unix/tcl.m4, unix/configure (SC_CONFIG_CFLAGS): harden the check
-	to add _r to CC on AIX with threads.
+2011-04-12  Venkat Iyer <venkat@comit.com>
 
-2009-04-27  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
+	* library/tzdata/Atlantic/Stanley: Update to Olson tzdata2011f
 
-	* generic/tclInt.h:   Backport fix for [Bug 1028264]: WSACleanup() too
-	* generic/tclEvent.c: early. The fix introduces "late exit handlers"
-	* win/tclWinSock.c:   for similar late process-wide cleanups.
+2011-04-06  Miguel Sofer  <msofer@users.sf.net>
 
-2009-04-27  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
+	* generic/tclExecute.c (TclCompEvalObj): Earlier return if Tip280
+	gymnastics not needed.
 
-	* win/tclWinSock.c: Backport fix for [Bug 2446662]: resync Win
-	behavior on RST with that of unix (EOF).
+2011-04-05  Venkat Iyer <venkat@comit.com>
 
-2009-04-22  Andreas Kupries  <andreask@activestate.com>
+	* library/tzdata/Africa/Casablanca: Update to Olson's tzdata2011e
+	* library/tzdata/America/Santiago:
+	* library/tzdata/Pacific/Easter:
+	* library/tzdata/America/Metlakatla: (new)
+	* library/tzdata/America/North_Dakota/Beulah: (new)
+	* library/tzdata/America/Sitka: (new)
 
-	* generic/tclStringObj.c (UpdateStringOfString): Added cast to fix
-	signed/unsigned mismatch breaking win32 symbol/debug build.
+2011-04-04  Don Porter  <dgp@users.sourceforge.net>
 
-2009-04-15  Don Porter  <dgp@users.sourceforge.net>
+	* README:	Updated README files, repairing broken URLs and
+	* macosx/README:	removing other bits that were clearly wrong.
+	* unix/README:	Still could use more eyeballs on the detailed build
+	* win/README:	advice on various plaforms. [Bug 3202030]
 
-	* generic/tclStringObj.c:       AppendUnicodeToUnicodeRep failed
-	to set stringPtr->allocated to 0, leading to crashes.
+2011-04-02  Kevin B. Kenny  <kennykb@acm.org>
 
-2009-04-14  Stuart Cassoff  <stwo@users.sourceforge.net>
+	* generic/tclStrToD.c (QuickConversion): Replaced another couple of
+	'double' declarations with 'volatile double' to work around
+	misrounding issues in mingw-gcc 3.4.5.
 
-	* unix/tcl.m4:	Removed -Wno-implicit-int from CFLAGS_WARNING.
+2011-03-24  Donal K. Fellows  <dkf@users.sf.net>
 
-2009-04-08  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclFCmd.c (TclFileAttrsCmd): Ensure that any reference to
+	temporary index tables is squelched immediately rather than hanging
+	around to trip us up in the future.
 
-	* library/tcltest/tcltest.tcl:	Fixed unsafe [eval]s in the tcltest
-	* library/tcltest/pkgIndex.tcl:	package.  [Bug 2570363]
+2011-03-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-2009-04-07  Don Porter  <dgp@users.sourceforge.net>
+	* unix/tclLoadDl.c:    [Bug #3216070]: Loading extension libraries
+	* unix/tclLoadDyld.c:  from embedded Tcl applications.
+	***POTENTIAL INCOMPATIBILITY***
+	For extensions which rely on symbols from other extensions being
+	present in the global symbol table. For an example and some discussion
+	of workarounds, see http://stackoverflow.com/q/8330614/301832
 
-	* generic/tclStringObj.c:       Completed backports of fixes for
-	[Bug 2494093] and [Bug 2553906].
+2011-03-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
-2009-03-30  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCkalloc.c: [Bug #3197864]: pointer truncation on Win64
+	TCL_MEM_DEBUG builds
 
-	* doc/Alloc.3:	Size argument is "unsigned int".  [Bug 2556263]
+2011-03-16  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclStringObj.c:       Added protections from invalid memory
-	* generic/tclTestObj.c:         accesses when we append (some part of)
-	* tests/stringObj.test:         a Tcl_Obj to itself.  Added the
-	appendself and appendself2 subcommands to the [teststringobj] testing
-	command and added tests to the test suite.  [Bug 2603158]
+	* generic/tclBasic.c:	Some rewrites to eliminate calls to
+	* generic/tclParse.c:	isspace() and their /* INTL */ risk.
+	* generic/tclProc.c:
 
-2009-03-27  Don Porter  <dgp@users.sourceforge.net>
+2011-03-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* tests/fileName.test:	Tests for [Bug 2710920] to guard against
-	its appearance.
+	* unix/tcl.m4:    Make SHLIB_LD_LIBS='${LIBS}' the default and
+	* unix/configure: set to "" on per-platform necessary basis.
+	Backported from TEA, but kept all original platform code which was
+	removed from TEA.
 
-2009-03-20  Don Porter  <dgp@users.sourceforge.net>
+2011-03-14  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclStringObj.c:	Test stringObj-6.9 checks that
-	* tests/stringObj.test:		Tcl_AppendStringsToObj() no longer
-	crashes when operating on a pure unicode value.  [Bug 2597185]
+	* tools/tclZIC.tcl (onDayOfMonth): Allow for leading zeroes
+	in month and day so that tzdata2011d parses correctly.
+	* library/tzdata/America/Havana:
+	* library/tzdata/America/Juneau:
+	* library/tzdata/America/Santiago:
+	* library/tzdata/Europe/Istanbul:
+	* library/tzdata/Pacific/Apia:
+	* library/tzdata/Pacific/Easter:
+	* library/tzdata/Pacific/Honolulu:  tzdata2011d
 
-	* generic/tclExecute.c (INST_CONCAT1):	Panic when appends overflow
-	the max length of a Tcl value.  [Bug 2669109]
 
-2009-03-18  Don Porter  <dgp@users.sourceforge.net>
+	* unix/configure.in: [Bug 3205320]: stack space detection defeated by inlining
+	* unix/configure:    (autoconf-2.59)
 
-	* win/tclWinFile.c (TclpObjNormalizePath):      Corrected Tcl_Obj leak.
-	Thanks to Joe Mistachkin for detection and patch.  [Bug 2688184].
+2011-03-09  Don Porter  <dgp@users.sourceforge.net>
 
-2009-02-20  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclNamesp.c:	Tighten the detector of nested [namespace code]
+	* tests/namespace.test:	quoting that the quoted scripts function
+	properly even in a namespace that contains a custom "namespace"
+	command.  [Bug 3202171]
 
-	* generic/tclPathObj.c: Fixed mistaken logic in TclFSGetPathType()
-	* tests/fileName.test:  that assumed (not "absolute" => "relative").
-	This is a false assumption on Windows, where "volumerelative" is
-	another possibility.  [Bug 2571597].
+	* doc/tclvars.n:	Formatting fix.  Thanks to Pat Thotys.
 
-2008-02-06  Daniel Steffen  <das@users.sourceforge.net>
+2011-03-08  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tcl.h (Darwin): workaround conflict between deprecated tcl
-	panic macro and panic() function declaration in <mach/mach.h> header.
+	* generic/tclBasic.c: Fix gcc warnings: variable set but not used
 
-2009-02-05  Don Porter  <dgp@users.sourceforge.net>
+2011-03-08  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclStringObj.c: Added overflow protections to the
-	AppendUtfToUtfRep routine to either avoid invalid arguments and
-	crashes, or to replace them with controlled panics.  [Bug 2561794]
+	* generic/tclInt.h:	Remove TclMarkList() routine, an experimental
+	* generic/tclUtil.c:	dead-end from the 8.5 alpha days.
 
-2009-02-04  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclResult.c (ResetObjResult):	Correct failure to clear
+	invalid intrep.  Thanks to Colin McDonald. [Bug 3202905]
 
-	* generic/tclStringObj.c (SetUnicodeObj):       Corrected failure of
-	Tcl_SetUnicodeObj() to panic on a shared object.  [Bug 2561488].  Also
-	factored out common code to reduce duplication.
+2011-03-06  Don Porter  <dgp@users.sourceforge.net>
 
-2009-01-09  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclBasic.c:	More replacements of Tcl_UtfBackslash() calls
+	* generic/tclCompile.c:	with TclParseBackslash() where possible.
+	* generic/tclParse.c:
+	* generic/tclUtil.c:
 
-	* generic/tclStringObj.c (STRING_SIZE): Corrected failure to limit
-	memory allocation requests to the sizes that can be supported by
-	Tcl's memory allocation routines.  [Bug 2494093].
+	* generic/tclUtil.c (TclFindElement):	Guard escape sequence scans
+	to not overrun the string end.  [Bug 3192636]
 
-2009-01-08  Don Porter  <dgp@users.sourceforge.net>
+2011-03-05  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclStringObj.c (STRING_UALLOC):  Added missing parens
-	required to get correct results out of things like
-	STRING_UALLOC(num + append).  [Bug 2494093].
+	* generic/tclParse.c (TclParseBackslash): Correct trunction checks in
+	* tests/parse.test:	\x and \u substitutions.  [Bug 3200987]
 
-2008-12-04  Don Porter  <dgp@users.sourceforge.net>
+2011-01-26  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclIOUtil.c (Tcl_FSGetNormalizedPath):	Added another
-	flag value TCLPATH_NEEDNORM to mark those intreps which need more
-	complete normalization attention for correct results.  [Bug 2385549]
+	* doc/RegExp.3: [Bug 3165108]: Corrected documentation of description
+	of subexpression info in Tcl_RegExpInfo structure.
 
-2008-12-03  Don Porter  <dgp@users.sourceforge.net>
+2011-01-25  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclFileName.c (TclDoGlob):	One of the
-	Tcl_FSMatchInDirectory() calls did not have its return code
-	checked.  Some VFS drivers can return TCL_ERROR, and when that's
-	not checked, the error message gets converted into a list of
-	matching files returned by [glob], with ridiculous results.
+	* generic/tclCkalloc.c:  [Bug 3129448]: Possible over-allocation on
+	* generic/tclHash.c:     64-bit platforms, part 2, backported
+	* generic/tclProc.c:     strcpy->memcpy change but not change in any
+				 struct.
 
-2008-12-01  Don Porter  <dgp@users.sourceforge.net>
+2011-01-19 Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	* generic/tclIO.c (TclFinalizeIOSubsystem): Revised latest commit to
-	something that doesn't crash the test suite.
+	* generic/tclExecute.c: [Bug 3138178]: Backport of Miguel's 2010-09-22
+	fix on 8.6 branch (decache stack info wherever ::errorInfo may be
+	updated, for trace sanity).
 
-2008-11-25  Andreas Kupries  <andreask@activestate.com>
+2011-01-19  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclIO.c (TclFinalizeIOSubsystem): Applied backport of
-	  Alexandre Ferrieux's patch for [Bug 2270477] to prevent infinite
-	  looping during finalization of channels not bound to
-	  interpreters.
+	* tools/genStubs.tcl:       Make sure to use CONST/VOID in stead of
+	* generic/tclIntDecls.h:    const/void when appropriate. This allows to
+	* generic/tclIntPlatDecls.h:use const/void in the *.decls file always,
+	* generic/tclTomMathDecls.h:genStubs will do the right thing.
 
-2008-11-23  Andreas Kupries  <andreask@activestate.com>
+2011-01-18  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclIO.c: Backport of fix for [Bug 2333466].
+	* generic/tclBasic.c:      Various mismatches between Tcl_Panic
+	* generic/tclCompCmds.c:   format string and its arguments,
+	* generic/tclCompExpr.c:   discovered thanks to [Bug 3159920]
+	* generic/tclPreserve.c:   (Backported)
+	* generic/tclTest.c:
 
-2008-11-04  Jeff Hobbs  <jeffh@ActiveState.com>
+2011-01-17  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclPort.h: remove the ../{win,unix}/ header dirs as the
-	build system already has it, and it confuses builds when used with
-	private headers installed.
+	* win/tcl.m4:         handle --enable-64bit=ia64 for gcc. BACKPORT.
+	* win/configure:      (autoconf-2.59)
+	* win/tclWin32Dll.c:  [Patch 3059922]: fixes for mingw64 - gcc4.5.1
+	* generic/tclIOCmd.c: [Bug 3148192]: Commands "read/puts" incorrectly
+	* tests/chanio.test:  interpret parameters. Improved error-message
+	* tests/io.test       regarding legacy form.
+	* tests/ioCmd.test
 
-2008-09-25  Don Porter  <dgp@users.sourceforge.net>
+2011-01-15  Kevin B. Kenny  <kennykb@users.sf.net>
 
-	* doc/global.n:	Correct false claim about [info locals].
+	* doc/tclvars.n:
+	* generic/tclStrToD.c:
+	* generic/tclUtil.c (Tcl_PrintDouble):
+	* tests/util.test (util-16.*): Restored full Tcl 8.4 compatibility
+	for the formatting of floating point numbers when $::tcl_precision
+	is not zero. Added compatibility tests to make sure that excess
+	trailing zeroes are suppressed for all eight major code paths.
+	[Bug 3157475]
 
-2008-08-14  Don Porter  <dgp@users.sourceforge.net>
+2011-01-13  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/fileName.test:	Revise new tests for portability to case
-	insensitive filesystems.
+	* generic/tclExecute.c (GrowEvaluationStack): Off-by-one error in
+	sizing the new allocation - was ok in comment but wrong in the code.
+	Triggered by [Bug 3142026] which happened to require exactly one more
+	than what was in existence. BACKPORT.
 
-2008-08-14  Daniel Steffen  <das@users.sourceforge.net>
+2011-01-03  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclCompile.h:		add support for debug logging of DTrace
-	* generic/tclBasic.c:		'proc', 'cmd' and 'inst' probes (does
-					_not_ require a platform with DTrace).
+	* tools/genStubs.tcl:  Fix "make genstubs", which was broken
+	since 2010-11-30, the TclDoubleDigits backport.
 
-	* unix/Makefile.in:		ensure Makefile shell is /bin/bash for
-	* unix/configure.in (SunOS):	DTrace-enabled build on Solaris.
-					(followup to 2008-06-12) [Bug 2016584]
+2010-12-31  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* unix/tcl.m4 (SC_PATH_X):	check for libX11.dylib in addition to
-					libX11.so et al.
+	* generic/tclHash.c: [Bug 3007895]: Tcl_(Find|Create)HashEntry
+	stub entries can never be called. They still cannot be called
+	(no change in functionality), but at least they now do
+	exactly the same as the Tcl_(Find|Create)HashEntry macro's,
+	so the confusion addressed in this Bug report is gone.
+	(Backported from Tcl 8.6)
 
-	* unix/configure: 		autoconf-2.13
+2010-12-17  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-2008-08-13  Don Porter  <dgp@users.sourceforge.net>
+	* unix/Makefile.in:  Remove unwanted/obsolete 'ddd' target.
 
-	* generic/tclFileName.c:	Fix for errors handling -types {}
-	* tests/fileName.test:		option to [glob]. [Bug 1750300]
-	Thanks to Matthias Kraft and George Peter Staplin.
+2010-12-17  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-2008-08-11  Andreas Kupries  <andreask@activestate.com>
+	* unix/Makefile.in:  [Bug 2446711]: Remove 'allpatch' target.
 
-	* generic/tclProc.c (Tcl_ProcObjCmd): Fixed memory leak triggered
-	* tests/proc.test: by procbody::test::proc. See [Bug 2043636].
-	Added a test case demonstrating the leak before the fix. Fixed a
-	few spelling errors in test descriptions as well.
+2010-12-17  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-2008-07-28  Andreas Kupries  <andreask@activestate.com>
+	* unix/Makefile.in:  Use 'rpmbuild', not 'rpm' [Bug 2537626].
 
-	* generic/tclBasic.c: Added missing release of extended command
-	word index when deleting an interpreter (DeleteInterpProc). Added
-	missing ref count when creating an empty string as path (EvalEx).
+2010-12-13  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclCompile.c (TclInitCompileEnv): Made same change to
-	control flow as in TclEvalObjEx. Not needed while uplevel and
-	siblings go through the eval-direct code path, however if that
-	changes (like it did in 8.5+) better to have this in place instead
-	of re-searching why certain places are without absolute locations.
+	* unix/tcl.m4:    Cross-compile support for Win and UNIX (backported)
+	* unix/configure: (autoconf-2.59)
+	* win/tcl.m4:
+	* win/configure.in:
+	* win/configure: (autoconf-2.59)
 
-	* tests/info.test: Added tests 38.*, exactly testing the tracking
-	of location for uplevel scripts, and made the testsuite fully
-	usable with and without -singleproc 1.
+2010-12-12  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-2008-07-25  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tcl.m4: Better building on OpenBSD.
+	* unix/configure: (autoconf-2.59)
 
-	* tests/info.test: Add !singleTestInterp constraint to various tests;
-	(info-22.8, info-23.0): switch to glob matching to avoid sensitivity
-	to tcltest.tcl line number changes. [Bug 1605269]
+2010-12-10 Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-2008-07-24  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclIO.c: [backport] Make sure [fcopy -size ... -command ...] always
+	* tests/io.test:   calls the callback asynchronously, even for size zero.
 
-	* tests/info.test: Tests 38.* added, exactly testing the tracking
-	of location for uplevel scripts.
+2010-12-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2008-07-23  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclUtil.c (TclReToGlob): add extra check for multiple
+	inner *s that leads to poor recursive glob matching, defer to
+	original RE instead.  tclbench RE var backtrack.
 
-	* generic/tclBasic.c: Modified TclArgumentGet to reject pure lists
-	* generic/tclCmdIL.c: immediately, without search. Reworked setup
-	* generic/tclCompile.c: of eoFramePtr, doesn't need the line
-	* tests/info.test: information, more sensible to have everything
-	on line 1 when eval'ing a pure list. Updated the users of the line
-	information to special case this based on the frame type (i.e.
-	TCL_LOCATION_EVAL_LIST). Added a testcase demonstrating the new
-	behaviour.
+2010-12-01  Kevin B. Kenny  <kennykb@acm.org>
 
-2008-07-22  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclStrToD.c (SetPrecisionLimits, TclDoubleDigits):
+	Added meaningless initialization of 'i', 'ilim' and 'ilim1'
+	to silence warnings from the C compiler about possible use of
+	uninitialized variables, Added a panic to the 'switch' that
+	assigns them, to assert that the 'default' case is impossible.
+	[Bug 3124675]
 
-	* generic/tclBasic.c: Added missing function comments.
+2010-11-30  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclCompile.c: Made the new TclEnterCmdWordIndex
-	* generic/tclCompile.h: static.
+	* generic/tclInt.decls: Backport of Kevin B. Kenny's work on
+	* generic/tclInt.h: the Tcl Head, with help from Jeff Hobbs.
+	* generic/tclStrToD.c:
+	* generic/tclTest.c:
+	* generic/tclTomMath.decls:
+	* generic/tclUtil.c:
+	* tests/util.test:
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/makefile.vc: Rewrite of Tcl_PrintDouble and TclDoubleDigits
+	that (a) fixes a severe performance problem with floating point
+	shimmering reported by Karl Lehenbauer, (b) allows TclDoubleDigits
+	to generate the digit strings for 'e' and 'f' format, so that it
+	can be used for tcl_precision != 0 (and possibly later for [format]),
+	(c) fixes [Bug 3120139] by making TclPrintDouble inherently
+	locale-independent, (d) adds test cases to util.test for
+	correct rounding in difficult cases of TclDoubleDigits where fixed-
+	precision results are requested. (e) adds test cases to util.test for
+	the controversial aspects of [Bug 3105247]. As a side effect, two
+	more modules from libtommath (bn_mp_set_int.c and bn_mp_init_set_int.c)
+	are brought into the build, since the new code uses them.
 
-	* generic/tclBasic.c: Reworked the handling of bytecode literals
-	* generic/tclCompile.c: for #280 to fix the abysmal performance
-	* generic/tclCompile.h: for deep recursion, replaced the linear
-	* generic/tclExecute.c: search through the whole stack with
-	* generic/tclInt.h: another hashtable and simplified the data
-	structure used by the compiler (array instead of hashtable).
-	Incidentially this also fixes the memory leak reported via [Bug
-	2024937].
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
+	* generic/tclTomMathDecls.h:	Regenerated.
 
-2008-07-21  Andreas Kupries <andreask@activestate.com>
+2010-11-30  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclBasic.c: Extended the existing TIP #280 system (info
-	* generic/tclCmdAH.c: frame), added the ability to track the
-	* generic/tclCompCmds.c: absolute location of literal procedure
-	* generic/tclCompile.c: arguments, and making this information
-	* generic/tclCompile.h: available to uplevel, eval, and
-	* generic/tclInterp.c: siblings. This allows proper tracking of
-	* generic/tclInt.h: absolute location through custom (Tcl-coded)
-	* generic/tclNamesp.c: control structures based on uplevel, etc.
-	* generic/tclProc.c:
+	* generic/tclInt.decls, generic/tclInt.h, generic/tclIntDecls.h:
+	* generic/tclStubInit.c: TclFormatInt restored at slot 24
+	* generic/tclUtil.c (TclFormatInt): restore TclFormatInt func from
+	2005-07-05 macro-ization. Benchmarks indicate it is faster, as a
+	key int->string routine (e.g. int-indexed arrays).
 
-2008-07-07  Andreas Kupries  <andreask@activestate.com>
+2010-11-23  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclCmdIL.c (InfoFrameCmd): Fixed unsafe idiom of setting
-	the interp result found by Don Porter.
+	* generic/tclVar.c (VarHashInvalidateEntry): Removed obsolete
+	  patch for AIX defining this macro as function. This is not
+	  necessary anymore. See ChangeLog entry 2010-07-28 (Bug 3037525)
+	  for the actual bug and fix the patch was a workaround for.
 
-2008-07-04  Joe English  <jenglish@users.sourceforge.net>
+2010-11-19  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclEncoding.c(UtfToUtfProc): Avoid unwanted sign extension
-	when converting incomplete UTF-8 sequences. See [Bug 1908443] for
-	details.
+	* generic/tclInterp.c:  fix gcc warning: passing argument 3 of
+	'Tcl_GetIndexFromObj' discards qualifiers from pointer target type
+	* generic/tclWinInit.c: fix gcc warning: dereferencing pointer
+	'oemId' does break strict-aliasing rules
+	* win/tclWin32Dll.c:    fix gcc warnings: unused variable 'registration'
+	* win/tclWinChan.c:
+	* win/tclWinFCmd.c:
+	* win/configure.in:	    Allow cross-compilation by default. (backported)
+	* win/tcl.m4:		    Use -pipe for gcc on win32 (backported)
+	* win/configure:        (regenerated)
 
-2008-07-03  Don Porter  <dgp@users.sourceforge.net>
+2010-11-18  Donal K. Fellows  <dkf@users.sf.net>
 
-	* library/package.tcl:	Removed [file readable] testing from
-	[tclPkgUnknown] and friends.  We find out soon enough whether a
-	file is readable when we try to [source] it, and not testing
-	before allows us to workaround the bugs on some common filesystems
-	where [file readable] lies to us.  [Patch 1969717]
+	* doc/file.n: [Bug 3111298]: Typofix.
 
-2008-06-28  Don Porter  <dgp@users.sourceforge.net>
+2010-11-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclIOUtil.c:	Plug memory leak in latest commit.  Thanks
-	Rolf Ade for detecting and Dan Steffen for the fix [Bug 2004654].
+	* generic/tclPlatDecls.h: [Bug 3110161]: Extensions using TCHAR don't
+	compile on VS2005 SP1
 
-2008-06-23  Don Porter  <dgp@users.sourceforge.net>
+2010-11-15  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclIOUtil.c: Fixed bug in Tcl_GetTranslatedPath() when
-	operating on the "Special path" variant of the "path" Tcl_ObjType
-	intrep.  A full normalization was getting done, in particular, coercing
-	relative paths to absolute, contrary to what the function of
-	producing the "translated path" is supposed to do.  [Bug 1972879].
+	* doc/interp.n: [Bug 3081184]: TIP #378 backport.
+	* doc/tclvars.n: Performance fix for TIP #280.
+	* generic/tclBasic.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclInterp.c:
+	* tests/info.test:
+	* tests/interp.test:
 
-2008-06-20  Don Porter  <dgp@users.sourceforge.net>
+2010-11-03  Kevin B. Kenny  <kennykb@acm.org>
 
-	* tests/binary.test:	Corrected flawed tests revealed by a -debug 1
-	* tests/io.test:	-singleproc 1 test suite run.
+	* generic/tclCompCmds.c (TclCompileCatchCmd):
+	* tests/compile.test (compile-3.6): [Bug 3098302]: Reworked the
+	compilation of the [catch] command so as to avoid placing any code
+	that might throw an exception (specifically, any initial substitutions
+	or any stores to result or options variables) between the BEGIN_CATCH
+	and END_CATCH but outside the exception range.  Added a test case that
+	panics on a stack smash if the change is not made.
 
-2008-06-18  Don Porter  <dgp@users.sourceforge.net>
+2010-11-01  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-	* generic/tclParseExpr.c:	Disabled attempts to support [expr]
-	functions named eq(...) or ne(...).  Any attempts to use such
-	functions were panicking.  [Bug 1971879].
+	* library/safe.tcl:	Improved handling of non-standard module
+	* tests/safe.test:	path lists, empty path lists in particular.
 
-2008-06-16  Andreas Kupries  <andreask@activestate.com>
+2010-11-01  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclCmdIL.c (InfoFrameCmd): Backport of fix made on the
-	* tests/info.test: head branch :: Moved the code looking up the
-	information for key 'proc' out of the TCL_LOCATION_BC branch to
-	after the switch, this is common to all frame types. Updated the
-	testsuite to match. This was exposed by the 2008-06-08 commit
-	(Miguel), switching uplevel from direct eval to compilation. Fixes
-	[Bug 1987851].
+	* library/tzdata/Asia/Hong_Kong:
+	* library/tzdata/Pacific/Apia:
+	* library/tzdata/Pacific/Fiji:   Olson's tzdata2010o.
 
-2008-06-12  Andreas Kupries  <andreask@activestate.com>
+2010-10-23  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclCmdIL.c (InfoFrameCmd): TIP #280 conditional
-	  feature. Added checks to validate HashEntry and HashTable
-	  information gotten from Command structures. This seems to be
-	  needed to handle structures managed by Itcl.
+	* tools/uniParse.tcl:   [Bug 3085863]: tclUniData 9 years old
+	* tools/uniClass.tcl:   Upgrade everything to Unicode 6.0, except
+	* tests/utf.test:       non-BMP characters > 0xFFFF
+	* generic/tclUniData.c: (re-generated)
+	* generic/regc_locale.c:(re-generated)
+	* generic/regcomp.c:    fix comment
+	* win/rules.vc          Update for VS10
 
-2008-06-12  Daniel Steffen  <das@users.sourceforge.net>
+2010-10-09  Miguel Sofer  <msofer@users.sf.net>
 
-	* unix/Makefile.in:		add complete deps on tclDTrace.h.
+	* generic/tclExecute.c: fix overallocation of exec stack in TEBC
+	(mixing numwords and numbytes)
 
-	* unix/Makefile.in:		clean generated tclDTrace.h file.
-	* unix/configure.in (SunOS): 	fix static DTrace-enabled build.
+2010-10-01  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* unix/tcl.m4 (SunOS-5.11): fix 64bit amd64 support with gcc & Sun cc.
-	* unix/configure: autoconf-2.13
+	* generic/tclExecute.c (EvalStatsCmd): change 'evalstats' to
+	return data to interp by default, or if given an arg, use that as
+	filename to output to (accepts 'stdout' and 'stderr').
+	Fix output to print used inst count data.
+	* generic/tclCkalloc.c: change TclDumpMemoryInfo sig to allow
+	* generic/tclInt.decls: objPtr as well as FILE* as output.
+	* generic/tclIntDecls.h:
 
-2008-05-26  Jeff Hobbs  <jeffh@ActiveState.com>
+2010-09-24  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/io.test (io-53.9): need to close chan before removing file.
+	* tclWinsock.c: [Bug 3056775]: Fixed race condition between thread
+	and internal co-thread access of a socket's structure because of
+	the thread not using the socketListLock in TcpAccept(). Added
+	documentation on how the module works to the top.
 
-2008-05-23  Andreas Kupries  <andreask@activestate.com>
+2010-09-23  Don Porter  <dgp@users.sourceforge.net>
 
-	* win/tclWinChan.c (FileWideSeekProc): Accepted a patch by
-	  Alexandre Ferrieux <ferrieux@users.sourceforge.net> to fix the
-	  [Bug 1965787]. 'tell' now works for locations > 2 GB as well
-	  instead of going negative.
+	* generic/tclCmdAH.c:	Fix cases where value returned by
+	* generic/tclEvent.c:	Tcl_GetReturnOptions() was leaked.
+	* generic/tclMain.c:	Thanks to Jeff Hobbs for discovery of the
+	anti-pattern to seek and destroy.
 
-	* generic/tclIO.c (Tcl_SetChannelBufferSize): Accepted a patch by
-	* tests/io.test:  Alexandre Ferrieux <ferrieux@users.sourceforge.net>
-	  to fix the [Bug 1969953]. Buffersize outside of the supported
-	  range are now clipped to nearest boundary instead of ignored.
+2010-09-19  Donal K. Fellows  <dkf@users.sf.net>
 
-2008-04-26  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* doc/file.n (file readlink): [Bug 3070580]: Typofix.
 
-	* generic/tclAsync.c: Tcl_AsyncDelete(): panic if attempt
-	to locate handler token fails. Happens when some other
-	thread attempts to delete somebody else's token.
+2010-09-10  Donal K. Fellows  <dkf@users.sf.net>
 
-	Also, panic early if we find out the wrong thread attempting
-	to delete the async handler (common trap). As, only the one
-	that created the handler is allowed to delete it.
+	* doc/regsub.n: [Bug 3063568]: Fix for gotcha in example due to Tcl's
+	special handling of backslash-newline. Makes example slightly less
+	pure, but more useful.
 
-2008-04-17  Andreas Kupries  <andreask@activestate.com>
+2010-09-08  Andreas Kupries  <andreask@activestate.com>
 
-	*** 8.4.19 TAGGED FOR RELEASE ***
+	*** 8.5.9 TAGGED FOR RELEASE ***
 
-	* generic/tclCompExpr.c (CompileMathFuncCall): Added
-	* tests/compExpr.test (compExpr-5.10): Tcl_ResetResult before
-	appending error message, to clear out possible sharing. Added test
-	case demonstrating the crash (abort on shared object) without the
-	fix.
+	* doc/tm.n: Added underscore to the set of characters accepted in
+	module names. This is true for quite some time in the code, this
+	change catches up the documentation.
 
-2008-04-15  Andreas Kupries  <andreask@activestate.com>
+2010-09-08  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclIO.c (CopyData): Applied another patch by Alexandre
-	* io.test (io-53.8a): Ferrieux <ferrieux@users.sourceforge.net>,
-	to shift EOF handling to the async part of the command if a
-	callback is specified, should the channel be at EOF already when
-	fcopy is called. Testcase by myself.
+	* changes:	Update for 8.5.9 release.
 
-2008-04-14  Kevin B. Kenny  <kennykb@acm.org>
+	* win/tclWin32Dll.c:	#ifdef protections to permit builds with
+	* win/tclWinChan.c:	mingw on amd64 systems. Thanks to "mescalinum"
+	* win/tclWinFCmd.c:	for reporting and testing.
 
-	* unix/tclUnixTime.c (TclpGetClicks, Tcl_GetTime): Removed
-	obsolete use of 'struct timezone' in the call to 'gettimeofday'.
-	[Bug 1942197].
+2010-09-06  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-2008-04-14  Don Porter  <dgp@users.sourceforge.net>
+	* unix/configure.in, generic/tclIOUtil.c (Tcl_Stat): Updated so that
+	we do not assume that all unix systems have the POSIX blkcnt_t type,
+	since OpenBSD apparently does not. Backported from HEAD (2010-02-16).
+	* unix/configure:	autoconf-2.59
 
-	* generic/tclExecute.c:	Plug memory leak introduced in the
-	2008-03-07 commit.  [Bug 1940433]
+2010-09-02  Andreas Kupries  <andreask@activestate.com>
 
-2008-04-11  Don Porter  <dgp@users.sourceforge.net>
+	* doc/glob.n: Fixed documentation ambiguity regarding the handling
+	of -join.
 
-	* README:		Bump version number to 8.4.19
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure.in:
+	* library/safe.tcl (::safe::AliasGlob): Fixed another problem, the
+	option -join does not stop option processing in the core builtin,
+	so the emulation must not do that either.
 
-	* unix/configure:	autoconf-2.13
-	* win/configure:
+2010-09-01  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* changes:		updates for 8.4.19 release.
+	* library/safe.tcl (::safe::AliasGlob): Moved the command
+	extending the actual glob command with a -directory flag to when
+	we actually have a proper untranslated path,
 
-2008-04-10  Andreas Kupries  <andreask@activestate.com>
+2010-09-01  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclIOCmd.c (Tcl_FcopyObjCmd): Keeping check for negative
-	values, changed to not be an error, but behave like the special
-	value -1 (copy all, default).
+	* changes:	Update for 8.5.9 release.
 
-	* tests/iocmd.test (iocmd-15.{12,13}): Removed.
+2010-09-01  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/io.test (io-52.5{,a,b}): Reverted last change, added
-	comment regarding the meaning of -1, added two more testcases for
-	other negative values, and input wrapped to negative.
+	* generic/tclExecute.c: [Bug 3057639]. Applied patch by Jeff to
+	* generic/tclVar.c: make the behaviour of lappend in bytecompiled
+	* tests/append.test: mode consistent with direct-eval and 'append'
+	* tests/appendComp.test: generally. Added tests (append*-9.*)
+	showing the difference.
+	***POTENTIAL INCOMPATIBILITY***
 
-2008-04-09  Andreas Kupries  <andreask@activestate.com>
+2010-09-01  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tests/io.test (io-52.5): Removed '-size -1' from test, does not
-	seem to have any bearing, and was an illegal value. Test case is
-	not affected by the value of -size, test flag restoration and that
-	everything was properly copied.
+	* tools/tcltk-man2html.tcl: Improve handling of cross-links for
+	options between Ttk manual pages.
 
-	* generic/tclIOCmd.c (Tcl_FcopyObjCmd): Added checking of -size
-	* tests/ioCmd.test (iocmd-15.{13,14}): value to reject negative
-	values, and values overflowing 32-bit signed. [Bug 1557855]. Basic
-	patch by Alexandre Ferrieux <ferrieux@users.sourceforge.net>, with
-	modifications from me to separate overflow from true negative
-	value. Extended testsuite.
+	* doc/Tcl.n: Avoid nroff hazards when generating documentation.
 
-2008-04-08  Andreas Kupries  <andreask@activestate.com>
+2010-08-31  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/io.test (io-53.8,53.9,53.10): Backported das' fix of typo
-	  and quoting for spaces in builddir path.
+	* win/tcl.m4: Applied patch by Jeff fixing issues with the
+	manifest handling on Win64.
+	* win/configure: Regenerated.
 
-2008-04-07  Andreas Kupries  <andreask@activestate.com>
+2010-08-29  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tests/io.test (io-53.10): Testcase for bi-directionaly fcopy.
-	* generic/tclIO.c: Additional changes to data structures for fcopy
-	* generic/tclIO.h: and channels to perform proper cleanup in case
-	  of a channel having two background copy operations running as is
-	  now possible.
+	* doc/dict.n: [Bug 3046999]: Corrected cross reference to array
+	manpage to refer to (correct) existing subcommand.
 
-	* generic/tclIO.c (BUSY_STATE, CheckChannelErrors,
-	  TclCopyChannel): New macro, and the places using it. This change
-	  allows for bi-directional fcopy on channels. [Bug 1350564].
-	  Thanks to Alexandre Ferrieux <ferrieux@users.sourceforge.net>
-	  for the patch.
+2010-08-26  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* tests/io.test (io-53.9): Made test cleanup robust against the
-	  possibility of slow process shutdown on Windows. Backported from
-	  Kevin Kenny's change to the same test on the 8.5 and head
-	  branches.
+	* unix/configure, unix/tcl.m4: SHLIB_LD_LIBS='${LIBS}' for OSF1-V*.
+	Add /usr/lib64 to set of auto-search dirs. [Bug 1230554]
+	(SC_PATH_X): Correct syntax error when xincludes not found.
 
-2008-04-04  Andreas Kupries  <andreask@activestate.com>
+	* win/Makefile.in (VC_MANIFEST_EMBED_DLL VC_MANIFEST_EMBED_EXE):
+	* win/configure, win/configure.in, win/tcl.m4: SC_EMBED_MANIFEST
+	macro and --enable-embedded-manifest configure arg added to
+	support manifest embedding where we know the magic.  Help prevents
+	DLL hell with MSVC8+.
 
-	* tests/io.test (io-53.9): Added testcase for [Bug 780533], based
-	  on Alexandre's test script. Also fixed problem with timer in
-	  preceding test, was not canceled properly in the ok case.
+2010-08-24  Don Porter  <dgp@users.sourceforge.net>
 
-2008-04-03  Andreas Kupries  <andreask@activestate.com>
+	* changes:	Update for 8.5.9 release.
 
-	* generic/tclIO.c (CopyData): Applied patch [Bug 1932639] to
-	* tests/io.test: prevent fcopy from calling -command synchronously
-	  the first time. Thanks to Alexandre Ferrieux
-	  <ferrieux@users.sourceforge.net> for report and patch.
+2010-08-23  Kevin B. Kenny  <kennykb@acm.org>
 
-2008-04-02  Andreas Kupries  <andreask@activestate.com>
+	* library/tzdata/Africa/Cairo:
+	* library/tzdata/Asia/Gaza: Olson's tzdata2010l.
 
-	* generic/tclIO.c (CopyData): Applied patch for the fcopy problem
-	  [Bug 780533], with many thanks to Alexandre Ferrieux
-	  <ferrieux@users.sourceforge.net> for tracking it down and
-	  providing a solution. Still have to convert his test script into
-	  a proper test case.
+2010-08-19  Donal K. Fellows  <dkf@users.sf.net>
 
-2008-03-27  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclTrace.c (TraceExecutionObjCmd, TraceCommandObjCmd)
+	(TraceVariableObjCmd): [Patch 3048354]: Use memcpy() instead of
+	strcpy() to avoid buffer overflow; we have the correct length of data
+	to copy anyway since we've just allocated the target buffer.
 
-	* unix/tcl.m4 (SunOS-5.1x): fix 64bit support for Sun cc. [Bug 1921166]
+2010-08-15  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/dltest/Makefile.in: support use of LDFLAGS in SHLIB_LD.
+	* generic/tclProc.c (ProcWrongNumArgs): [Bug 3045010]: Make the
+	handling of passing the wrong number of arguments to [apply] somewhat
+	less verbose when a lambda term is present.
 
-	* unix/configure: autoconf-2.13
+2010-08-12  Donal K. Fellows  <dkf@users.sf.net>
 
-2008-03-24  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): [Bug 2826551, Patch 2948425]:
+	Backport of updates to make handling of RE line anchors correct.
 
-	* generic/tclBinary.c: bug #1923966 - crash in binary format
-	* tests/binary.test:   Added tests for the above crash condition.
+2010-08-11  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2008-03-11  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/ldAix: Remove ancient (pre-4.2) AIX support
+	* unix/configure: regen with ac-2.59
+	* unix/configure.in, unix/tclConfig.sh.in, unix/Makefile.in:
+	* unix/tcl.m4 (AIX): Remove the need for ldAIX, replace with
+	-bexpall/-brtl.  Remove TCL_EXP_FILE (export file) and other baggage
+	that went with it.  Remove pre-4 AIX build support.
 
-	* macosx/tclMacOSXNotify.c: avoid using CoreFoundation after fork() on
-	Darwin 9 even when TclpCreateProcess() uses vfork().
+2010-08-10  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2008-03-07  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclUtil.c (TclByteArrayMatch): Patterns may not be
+	null-terminated, so account for that.
 
-	* generic/tclExecute.c (Tcl_ExprObj):   Revised expression bytecode
-	compiling so that bytecodes invalid due to changing context or due
-	to the difference between expressions and scripts are not reused.
-	[Bug 1899164].
+2010-08-05  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclTest.c:	Backport the [testexprlongobj] testing command.
+	* changes:	Update for 8.5.9 release.
 
-	* tests/execute.test (execute-6.8):	Added tests checking that
-	bytecode is invalidates in the right situations.
+2010-08-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2008-03-03  Reinhard Max  <max@suse.de>
+	* unix/tclUnixFCmd.c: Adjust license header as per
+	ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
 
-	* unix/tclUnixChan.c: Fix mark and space parity on Linux, which
-	uses CMSPAR instead of PAREXT.
+	* license.terms: Fix DFARs note for number-adjusted rights clause
 
-2008-02-27  Pat Thoyts  <patthoyts@users.sourceforge.net>
-
-	* library/http/pkgIndex.tcl: Backported 2.5.5 changes from
-	* library/http/http.tcl:     8.5 version.
-	* doc/http.n:                Document the meta accessor.
-
-2008-02-26  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* generic/tclIOCmd.c (Tcl_GetsObjCmd): do not reuse resultObj as
-	it may be shared (crash condition).
-
-2008-02-22  Pat Thoyts  <patthoyts@users.sourceforge.net>
-
-	* library/http/pkgIndex.tcl: Set version 2.5.4
-	* library/http/http.tcl:     Fix for bug #1818565. Always check that
-	the state array exists in the http::status command.
+	* win/tclWin32Dll.c (asciiProcs, unicodeProcs):
+	* win/tclWinLoad.c (TclpDlopen): 'load' use LoadLibraryEx with
+	* win/tclWinInt.h (TclWinProcs): LOAD_WITH_ALTERED_SEARCH_PATH to
+	prefer dependent DLLs in same dir as loaded DLL.
+	***POTENTIAL INCOMPATIBILITY***
 
-2008-02-06  Don Porter  <dgp@users.sourceforge.net>
+	* win/Makefile.in (%.${OBJEXT}): better implicit rules support
 
-	*** 8.4.18 TAGGED FOR RELEASE ***
+2010-08-04  Don Porter  <dgp@users.sourceforge.net>
 
-	* README:		Bump version number to 8.4.18
-	* generic/tcl.h:
+	* generic/tcl.h:	Bump to 8.5.9 for release.
+	* library/init.tcl:
 	* tools/tcl.wse.in:
 	* unix/configure.in:
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
+	* README:
 
-	* unix/configure:	autoconf-2.13
+	* unix/configure:	autoconf-2.59
 	* win/configure:
 
-	* changes:		updates for 8.4.18 release.
-
-2008-02-02  Daniel Steffen  <das@users.sourceforge.net>
-
-	* unix/configure.in (Darwin):	correct Info.plist year substitution in
-					non-framework builds.
-
-	* unix/configure:		autoconf-2.13
-
-2008-01-30  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclInterp.c (Tcl_GetAlias): fix for [Bug 1882373]
-
-2008-01-13  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* win/tclWinSerial.c (SerialCloseProc, TclWinOpenSerialChannel):
-	use critical section for read & write side. [Bug 1353846] (newman)
-
-2007-12-31  Don Porter  <dgp@users.sourceforge.net>
-
-	*** 8.4.17 TAGGED FOR RELEASE ***
-
-	* changes:		updates for 8.4.17 release.
-	* doc/filename.n:	Typo
-
-2007-12-18  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+	* changes:	Update for 8.5.9 release.
 
-	* generic/regguts.h, generic/regc_color.c, generic/regc_nfa.c:
-	Fixes for problems created when processing regular expressions that
-	generate very large automata. An enormous number of thanks to Will
-	Drewry <wad@google.com>, Tavis Ormandy <taviso@google.com>, and Tom
-	Lane <tgl@sss.pgh.pa.us> from the Postgresql crowd for their help in
-	tracking these problems down. [Bug 1810264]
+2010-08-04  Andreas Kupries  <andreask@activestate.com>
 
-2007-12-14  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIORChan.c: [Bug 3034840]: Fixed reference counting
+	* tests/ioCmd.test: in InvokeTclMethod and callers.
 
-	* win/README: updated notes
+2010-08-03  Andreas Kupries  <andreask@activestate.com>
 
-2007-12-14  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* tests/var.test (var-19.1): [Bug 3037525]: Added test demonstrating
+	the local hashtable deletion crash and fix.
 
-	* unix/tclUnixCompat.c (TclpGetHostByName): Really applied
-	the change noted on 2007-11-13 by dkf below.
+	* tests/info.test (info-39.1, test_info_frame): Changed absolute to
+	relative frame adressing to handle difference between testing with
+	-singleproc 1 vs. the default -singleproc 0. Plus comment fix. The
+	test and issue are not relevant to the trunk, forward porting is not
+	required.
 
-2007-12-13  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* generic/tclIOUtil.c (TclGetOpenMode): Only set the O_APPEND flag
-	* tests/ioUtil.test (ioUtil-4.1):	on a channel for the 'a'
-	mode and not for 'a+'. [Bug 1773127] (backport from HEAD)
-
-2007-12-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Prevent shimmering crash
-	when -exact and -integer/-real are mixed. [Bug 1844789]
+2010-08-03  Don Porter  <dgp@users.sourceforge.net>
 
-2007-11-28  Jeff Hobbs  <jeffh@ActiveState.com>
+	* changes:	Update for 8.5.9 release.
 
-	* win/tclWinSock.c (Tcl_GetHostName): update to previous fix to
-	set hostname length appropriately, clean up check overall.
+2010-08-02  Kevin B. Kenny  <kennykb@users.sf.net>
 
-2007-11-27  Don Porter  <dgp@users.sourceforge.net>
+	* library/tzdata/America/Bahia_Banderas:
+	* library/tzdata/Pacific/Chuuk:
+	* library/tzdata/Pacific/Pohnpei:
+	* library/tzdata/Africa/Cairo:
+	* library/tzdata/Europe/Helsinki:
+	* library/tzdata/Pacific/Ponape:
+	* library/tzdata/Pacific/Truk:
+	* library/tzdata/Pacific/Yap:			Olson's tzdata2010k.
 
-	* win/tclWinSock.c:	Add missing encoding conversion of the
-	[info hostname] value from the system encoding to Tcl's internal
-	encoding.  This is important now that ICANN no longer limits host
-	names to ASCII.  [Bug 1823552]
+2010-07-28  Miguel Sofer  <msofer@users.sf.net>
 
-2007-11-26  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* generic/tclVar.c: [Bug 3037525]: lose fickle optimisation in
+	TclDeleteVars (used for runtime-created locals) that caused crashes.
 
-	* generic/tclThread.c: Back-port locking changes from Tcl8.5
-	in Tcl_Mutex/ConditionFinlize. Now we properly master-lock
-	the finalization of sync primitives.
-
-2007-11-15  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/regc_nfa.c:	Fixed infinite loop in the regexp compiler
-	* generic/regcomp.c:	[Bug 1810038].  Corrected looping logic in
-	* tests/regexp.test:	fixempties() to avoid wasting time walking a
-	list of dead states [Bug 1832612].  Convert optst() from expensive
-	no-op to a cheap no-op.  Improve newline usage in debug output.
-
-2007-11-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* unix/tclUnixCompat.c (TclpGetHostByName): The six-argument form of
-	getaddressbyname_r() uses the fifth argument to indicate whether the
-	lookup succeeded or not on at least one platform. [Bug 1618235]
-
-2007-10-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2010-07-25  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/regc_lex.c (lexescape): Ensure that backreference numbers
-	can't overflow a signed int in a way that breaks things. [Bug 1810264]
+	* generic/tclInt.h: [Bug 3030870]: Make itcl 3.x built with pre-8.6
+	* generic/tclBasic.c: work in 8.6 revert tclInt.h to what it was
+	before, and relax the relation between Tcl_CallFrame and CallFrame.
 
-2007-10-15  Miguel Sofer  <msofer@users.sf.net>
+2010-07-17  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclParse.c (Tcl_ParseBraces): fix for possible read
-	after the end of buffer, [Bug 1813528] (Joe Mistachkin).
+	* generic/tcl.h: [Bug 3030870]: Make itcl 3.x built with pre-8.6
+	* generic/tclInt.h:		work in 8.6
 
-2007-10-03  Miguel Sofer  <msofer@users.sf.net>
+2010-07-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclObj.c (Tcl_FindCommandFromObj): fix finding a deleted
-	command; cannot trigger this from Tcl itself, but crash reported
-	on xotcl. This check is new to 8.4 but exists in 8.5, so this is a
-	backport or something. Thanks Gustaf Neumann.
+	* generic/tclExecute.c (IllegalExprOperandType): [Bug 3024379]: Made
+	sure that errors caused by an argument to an operator being outside
+	the domain of the operator all result in ::errorCode being ARITH
+	DOMAIN and not NONE.
 
-2007-10-02  Jeff Hobbs  <jeffh@ActiveState.com>
+2010-07-02  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tcl.h (Tcl_DecrRefCount): Update change from 2006-05-29
-	to make macro more warning-robust in unbraced if code.
+	* generic/tclIntDecls.h: [Bug 803489]: Tcl_FindNamespace problem in
+	the Stubs table.
 
-2007-10-02  Don Porter  <dgp@users.sourceforge.net>
+2010-07-01  Donal K. Fellows  <dkf@users.sf.net>
 
-	* README:		Bump version number to 8.4.17
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure.in:
+	* doc/mathop.n: [Bug 3023165]: Fix typo that was preventing proper
+	rendering of the exclusive-or operator.
 
-	* unix/configure:	autoconf-2.13
-	* win/configure:
-
-2007-09-20  Don Porter  <dgp@users.sourceforge.net>
-
-	*** 8.4.16 TAGGED FOR RELEASE ***
-
-	* doc/load.n:	Backport corrected example.
-
-2007-09-19  Don Porter  <dgp@users.sourceforge.net>
-
-	* unix/Makefile.in:     Update `make dist` so that tclDTrace.d is
-	included in the source code distribution.
+2010-06-28  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclPkg.c:	Backport fix for [1573844] to the
-	* tests/pkg.test:	TCL_TIP268 sections.
+	* generic/tclPosixStr.c: [Bug 3019634]: errno.h and tclWinPort.h have
+	conflicting definitions.
 
-2007-09-18  Don Porter  <dgp@users.sourceforge.net>
+2010-06-22  Donal K. Fellows  <dkf@users.sf.net>
 
-	* changes: updates for 8.4.16 release.
+	* generic/tclCmdIL.c (Tcl_LsetObjCmd): [Bug 3019351]: Corrected wrong
+	args message.
 
-2007-09-15  Daniel Steffen  <das@users.sourceforge.net>
+2010-06-18  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/tcl.m4 (SunOS-5.1x): 	replace direct use of '/usr/ccs/bin/ld'
-					in SHLIB_LD by 'cc' compiler driver.
-	* unix/configure: autoconf-2.13
+	* library/init.tcl (auto_execok): [Bug 3017997]: Add .cmd to the
+	default list of extensions that we can execute interactively.
 
-2007-09-14  Daniel Steffen  <das@users.sourceforge.net>
+2010-06-16  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclDTrace.d (new file): add DTrace provider for Tcl; allows
-	* generic/tclCompile.h:		  tracing of proc and command entry &
-	* generic/tclBasic.c: 		  return, bytecode execution, object
-	* generic/tclExecute.c:		  allocation and more; with essentially
-	* generic/tclInt.h:		  zero cost when tracing is inactive;
-	* generic/tclObj.c:		  enable with --enable-dtrace configure
-	* generic/tclProc.c:		  arg (disabled by default, will only
-	* unix/Makefile.in:		  enable if DTrace is present).
-	* unix/configure.in:		  [Patch 1793984]
+	* tools/loadICU.tcl:   [Bug 3016135]: Traceback using clock format
+	* library/msgs/he.msg: with locale of he_IL
 
-	* macosx/Makefile:		  enable DTrace support.
+2010-06-09  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/configure: autoconf-2.13
+	* library/platform/platform.tcl: Added OSX Intel 64bit
+	* library/platform/pkgIndex.tcl: Package updated to version 1.0.9.
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
-2007-09-11  Don Porter  <dgp@users.sourceforge.net>
+2010-05-26  Donal K. Fellows  <dkf@users.sf.net>
 
-	* library/tcltest/tcltest.tcl:	Accept underscores and colons in
-	* library/tcltest/pkgIndex.tcl:	constraint names.  Properly handle
-	constraint expressions that return non-numeric boolean results like
-	"false".  Bump to tcltest 2.2.9. [Bug 1772989; RFE 1071322]
+	* doc/socket.n: [Bug 3007442]: Server sockets never took a host
+	argument, so the list of options must precede the port argument.
 
-2007-09-11  Pat Thoyts  <patthoyts@users.sourceforge.net>
+2010-05-25  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* win/makefile.vc:  AMD64 target fixes for symbols builds.
-	* win/rules.vc:
+	* unix/tclUnixPort.h: [Bug 2991415]: tclport.h #included before
+	* win/tclWinPort.h:		     limits.h
+	* generic/tclInt.h:
 
-2007-09-10  Jeff Hobbs  <jeffh@ActiveState.com>
+2010-05-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclLink.c (Tcl_UpdateLinkedVar): guard against var being
-	unlinked. [Bug 1740631] (maros)
+	* tools/installData.tcl:  Make sure that copyDir only receives
+	normalized paths. Backported from trunk.
+	* generic/tclPlatDecls.h: Fix <tchar.h> inclusion for CYGWIN.
+	Backported from trunk (although for trunk this was moved to
+	tclWinPort.h)
+	* generic/tclPathObj.c:   Fix Tcl_SetStringObj usage for CYGWIN. This
+	function can only be used with unshared objects. This causes a crash
+	on CYGWIN. (backported from trunk)
+	* generic/tclFileName.c:  Don't declare cygwin_conv_to_win32_path here
+	* win/tclWinChan.c:       Fix various minor other gcc warnings, like
+	* win/tclWinConsole.c:    signed<->unsigned mismatch. Backported from
+	* win/tclWinDde.c:        trunk.
+	* win/tclWinNotify.c:
+	* generic/tclStrToD.c:    [Bug 3005233]: fix for build on OpenBSD vax
 
-2007-08-25  Kevin Kenny  <kennykb@acm.org>
+2010-05-19 Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	* generic/tclClock.c (FormatClock): Claimed additional space for
-	the %c format code to avoid a buffer overrun when formatting
-	(for example) a Friday in February in the Portuguese locale.
-	[Bug 1751117]
+	* generic/tclDictObj.c: Backport of fix for [Bug 3004007], EIAS
+	* tests/dict.test:      violation in list-dict conversions.
 
-2007-08-24  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclCompile.c: replaced copy loop that tripped some
-	compilers with memmove [Bug 1780870]
+2010-05-07  Andreas Kupries  <andreask@activestate.com>
 
-2007-08-14  Don Porter  <dgp@users.sourceforge.net>
+	* library/platform/platform.tcl: Fix cpu name for Solaris/Intel 64bit.
+	* library/platform/pkgIndex.tcl: Package updated to version 1.0.8.
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
-	* tests/trace.test:	Backport some tests.
+2010-04-30  Don Porter  <dgp@users.sourceforge.net>
 
-2007-08-14  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclBinary.c (UpdateStringOfByteArray): [Bug 2994924]: Add
+	panic when the generated string representation would grow beyond Tcl's
+	size limits.
 
-	* unix/tclLoadDyld.c: use dlfcn API on Mac OS X 10.4 and later; fix
-	issues with loading from memory on intel and 64bit; add debug messages.
+2010-04-29  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/load.test: add test load-10.1 for loading from vfs.
+	* library/platform/platform.tcl: Another stab at getting the /lib,
+	* library/platform/pkgIndex.tcl: /lib64 difference right for linux.
+	* unix/Makefile.in:		 Package updated to version 1.0.7.
+	* win/Makefile.in:
 
-2007-08-07  Daniel Steffen  <das@users.sourceforge.net>
+2010-04-29  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/tzdata/Antarctica/Macquarie:
+	* library/tzdata/Africa/Casablanca:
+	* library/tzdata/Africa/Tunis:
+	* library/tzdata/America/Santiago:
+	* library/tzdata/America/Argentina/San_Luis:
+	* library/tzdata/Antarctica/Casey:
+	* library/tzdata/Antarctica/Davis:
+	* library/tzdata/Asia/Anadyr:
+	* library/tzdata/Asia/Damascus:
+	* library/tzdata/Asia/Dhaka:
+	* library/tzdata/Asia/Gaza:
+	* library/tzdata/Asia/Kamchatka:
+	* library/tzdata/Asia/Karachi:
+	* library/tzdata/Asia/Taipei:
+	* library/tzdata/Europe/Samara:
+	* library/tzdata/Pacific/Apia:
+	* library/tzdata/Pacific/Easter:
+	* library/tzdata/Pacific/Fiji:   Olson's tzdata2010i.
+
+2010-04-19  Jan Nijtmans  <nijtmans@users.sf.net>
+
+	* win/tclWinPort.h: [Patch 2986105]: Conditionally defining
+	* win/tclWinFile.c: strcasecmp/strncasecmp
 
-	* generic/tclEnv.c:	improve environ handling on Mac OS X (adapted
-	* unix/tclUnixPort.h:	from Apple changes in Darwin tcl-64).
+2010-04-18  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/Makefile.in:	add support for compile flags specific to
-				object files linked directly into executables.
+	* doc/unset.n: [Bug 2988940]: Fix typo.
 
-	* unix/configure.in (Darwin): only use -seg1addr flag when prebinding;
-	use -mdynamic-no-pic flag for object files linked directly into exes;
-	support overriding TCL_PACKAGE_PATH in environment.
+2010-04-14  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/configure: autoconf-2.13
+	* library/platform/platform.tcl: Linux platform identification:
+	* library/platform/pkgIndex.tcl: Check /lib64 for existence of
+	* unix/Makefile.in: files matching libc* before accepting it as
+	* win/Makefile.in: base directory. This can happen on weirdly
+	installed 32bit systems which have an empty or partially filled
+	/lib64 without an actual libc. Bumped to version 1.0.6.
 
-2007-07-19  Don Porter  <dgp@users.sourceforge.net>
+2010-04-03  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* generic/tclParse.c:	In contexts where interp and parsePtr->interp
-	might be different, be sure to use the latter for error reporting.
+	* generic/tclStringObj.c: (SetStringFromAny): avoid trampling
+	over the tclEmptyStringRep as it is thread-shared.
 
-2007-07-05  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclThreadStorage.c (ThreadStorageGetHashTable):
+	avoid accessing shared table index w/o mutex protection
+	if VALGRIND defined on compilation time. This rules out
+	helgrind complains about potential race-conditions at
+	that place.
 
-	* library/init.tcl (unknown):	Corrected inconsistent error message
-	in interactive [unknown] when empty command is invoked. [Bug 1743676]
+	Thanks to Gustaf Neumann for the (hard) work.
 
-2007-06-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2010-03-31  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclBinary.c (Tcl_BinaryObjCmd): De-fang an instance of the
-	shared-result anti-pattern. [Bug 1716704]
+	* doc/package.n: [Bug 2980210]: Document the arguments taken by
+	the [package present] command correctly.
 
-2007-06-30  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2010-03-30  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclThread.c: Prevent RemeberSyncObj() from growing the sync
-	object lists by reusing already free'd slots, if possible.
-	See discussion on Bug 1726873 for more information.
+	* generic/tclIORChan.c (ReflectClose, ReflectInput, ReflectOutput,
+	ReflectSeekWide, ReflectWatch, ReflectBlock, ReflectSetOption,
+	ReflectGetOption, ForwardProc): [Bug 2978773]: Preserve
+	ReflectedChannel* structures across handler invokations, to avoid
+	crashes when the handler implementation induces nested callbacks
+	and destruction of the channel deep inside such a nesting.
 
-2007-06-29  Daniel Steffen  <das@users.sourceforge.net>
+2010-03-30  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclAlloc.c:		on Darwin, ensure memory allocated by
-	* generic/tclThreadAlloc.c:	the custom TclpAlloc()s is aligned to
-	16 byte boundaries (as is the case with the Darwin system malloc).
+	* generic/tclObj.c (Tcl_GetCommandFromObj):	[Bug 2979402]: Reorder
+	the validity tests on internal rep of a "cmdName" value to avoid
+	invalid reads reported by valgrind.
 
-2007-06-27  Don Porter  <dgp@users.sourceforge.net>
+2010-03-29  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c:	Corrected broken trace reversal logic in
-	* generic/tclTest.c:	TclCheckInterpTraces that led to infinite loop
-	* tests/basic.test:	when multiple Tcl_CreateTrace traces were set
-	and one of them did not fire due to level restrictions.  [Bug 1743941].
+	* generic/tclStringObj.c:	Fix array overrun in test format-1.12
+	caught by valgrind testing.
 
-2007-06-23  Daniel Steffen  <das@users.sourceforge.net>
+2010-03-25  Donal K. Fellows  <dkf@users.sf.net>
 
-	* macosx/tclMacOSXNotify.c (AtForkChild): don't call CoreFoundation
-	APIs after fork() on systems where that would lead to an abort().
+	* unix/tclUnixFCmd.c (TclUnixCopyFile): [Bug 2976504]: Corrected
+	number of arguments to fstatfs() call.
 
-2007-06-10  Jeff Hobbs  <jeffh@ActiveState.com>
+2010-03-24  Don Porter  <dgp@users.sourceforge.net>
 
-	* README: updated links. [Bug 1715081]
+	* generic/tclResult.c:	[Bug 2383005]: Revise [return -errorcode] so
+	* tests/result.test:	that it rejects illegal non-list values.
 
-2007-06-06  Daniel Steffen  <das@users.sourceforge.net>
+2010-03-20  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/configure.in (Darwin):		add plist for tclsh; link the
-	* unix/Makefile.in  (Darwin):		Tcl and tclsh plists into their
-	* macosx/Tclsh-Info.plist.in (new):	binaries in all cases.
+	* generic/tclIO.c (CopyData): Allow the total number of bytes copied
+	by [fcopy] to exceed 2GB. Can happen when no -size parameter given.
 
-	* unix/tcl.m4 (Darwin): fix CF checks in fat 32&64bit builds.
-	* unix/configure: autoconf-2.13
+2010-03-18  Don Porter  <dgp@users.sourceforge.net>
 
-2007-06-05  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclListObj.c: [Bug 2971669]: Prevent in overflow trouble in
+	* generic/tclTestObj.c: ListObjReplace operations.  Thanks to kbk for
+	* tests/listObj.test:   fix and test.
 
-	* tests/result.test (result-6.2): Add test for [Bug 1649062] so that
-	8.4 and 8.5 both test the same outcome and we verify compatibility.
+2010-03-12  Jan Nijtmans  <nijtmans@users.sf.net>
 
-2007-05-30  Don Porter  <dgp@users.sourceforge.net>
+	* win/makefile.vc:      Fix [Bug 2967340]: Static build failure
+	* win/.cvsignore
 
-	* README:		Bump version number to 8.4.16
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure.in:
+2010-03-09  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/configure:	autoconf-2.13
-	* win/configure:
+	* generic/tclIORChan.c: [Bug 2936225]: Thanks to Alexandre Ferrieux
+	* doc/refchan.n:	<ferrieux@users.sourceforge.net> for debugging
+	* tests/ioCmd.test:	and fixing the problem. It is the write-side
+				equivalent to the bug fixed 2009-08-06.
 
-2007-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+2010-03-09  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixThrd.c (Tcl_JoinThread): fix for 64-bit handling of
-	pthread_join exit return code storage. [Bug 1712723]
+	* library/tzdata/America/Matamoros: New locale
+	* library/tzdata/America/Ojinaga: New locale
+	* library/tzdata/America/Santa_Isabel: New locale
+	* library/tzdata/America/Asuncion:
+	* library/tzdata/America/Tijuana:
+	* library/tzdata/Antarctica/Casey:
+	* library/tzdata/Antarctica/Davis:
+	* library/tzdata/Antarctica/Mawson:
+	* library/tzdata/Asia/Dhaka:
+	* library/tzdata/Pacific/Fiji:
+	Olson tzdata2010c.
 
-2007-05-24  Don Porter  <dgp@users.sourceforge.net>
+2010-03-01  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	*** 8.4.15 TAGGED FOR RELEASE ***
+	* unix/tclUnixChan.c: [backported] Refrain from a possibly lengthy
+	reverse-DNS lookup on 0.0.0.0 when calling [fconfigure -sockname]
+	on an universally-bound (default) server socket.
 
-	* generic/tclIO.c:	Backport memleak fix in TclFinalizeIOSubsystem.
+2010-02-27  Donal K. Fellows  <dkf@users.sf.net>
 
-2007-05-17  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdMZ.c (StringFirstCmd, StringLastCmd): [Bug 2960021]:
+	Only search for the needle in the haystack when the needle isn't
+	larger than the haystack. Prevents an odd crash from sometimes
+	happening when things get mixed up (a common programming error).
 
-	* tests/fCmd.test:	Backport the notNetworkFilesystem constraint.
+2010-02-21  Jan Nijtmans  <nijtmans@users.sf.net>
 
-2007-05-15  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclBasic.c:   Fix [Bug 2954959] expr abs(0.0) is -0.0
+	* tests/expr.test
 
-	* generic/tclNamesp.c:	Plugged memory leak related to
-	[namespace delete ::]. [Bug 1716782]
+2010-02-19  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-	* changes: updates for 8.4.15 release.
+	* tcl.m4: Correct compiler/linker flags for threaded builds on OpenBSD
+	* configure: (regenerated).
 
-	* win/tclWinReg.c:		Bump to registry 1.1.5 to account
-	* library/reg/pkgIndex.tcl:	for [Bug 1682211] fix.
+2010-02-19  Donal K. Fellows  <dkf@users.sf.net>
 
-2007-05-10  Don Porter  <dgp@users.sourceforge.net>
+	* unix/installManPage: [Bug 2954638]: Correct behaviour of manual page
+	installer. Also added armouring to check that assumptions about the
+	initial state are actually valid (e.g., look for existing input file).
 
-	* generic/tclInt.h:     TclFinalizeThreadAlloc() is always defined,
-	so make sure it is also always declared.
+2010-02-11  Donal K. Fellows  <dkf@users.sf.net>
 
-	[Tcl Bug 1706140]
+	* generic/tclIOCmd.c (Tcl_OpenObjCmd): [Bug 2949740]: Make sure that
+	we do not try to put a NULL pipeline channel into binary mode.
 
-	* generic/tclCmdMZ.c (Trace*Proc):	Update Tcl_VarTraceProcs so
-	* generic/tclLink.c (LinkTraceProc):    that they call
-	* generic/tclUtil.c (TclPrecTraceProc): Tcl_InterpDeleted() for
-	themselves, and do not rely on (frequently buggy) setting of the
-	TCL_INTERP_DESTROYED flag by the trace core.
+2010-02-07  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclVar.c:     Update callers of CallVarTraces to not
-	pass in the TCL_INTERP_DESTROYED flag.  Also apply filters so that
-	public routines only pass documented flag values down to lower level
-	routines.
+	* tools/genStubs.tcl     Backport various formatting (spacing)
+	* generic/tcl*.decls     changes from HEAD, so diffing
+	* generic/tcl*Decls.h    between 8.5.x and 8.6 shows the
+	* generic/tclStubInit.c  real structural differences again.
+	                         (any signature change not backported!)
 
-	* generic/tclVar.c (CallVarTraces):        The setting of the
-	TCL_INTERP_DESTROYED flag is now done entirely within the
-	CallVarTraces routine, the only place it can be done right.
+2010-02-03  Donal K. Fellows  <dkf@users.sf.net>
 
-2007-04-30  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclVar.c (Tcl_ArrayObjCmd): More corrections for the 'unset'
+	subcommand.
 
-	* unix/Makefile.in: add 'tclsh' dependency to install targets that rely
-	on tclsh, fixes parallel 'make install' from empty build dir.
+2010-02-02  Andreas Kupries  <andreask@activestate.com>
 
-2007-04-29  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclCompile.c: [Bug 2933089]: A literal sharing problem with
+	* generic/tclCompile.h: 'info frame' affects not only 8.6 but 8.5 as
+	* generic/tclExecute.h: well. Backported the fix done in 8.6, without
+	* tests/info.test: changes. New testcase info-39.1.
 
-	* unix/tclUnixFCmd.c: add workaround for crashing bug in fts_open()
-	* unix/tclUnixInit.c: without FTS_NOSTAT on 64bit Darwin 8 or earlier.
+2010-02-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/tclLoadDyld.c (TclpLoadMemory): fix (void*) arithmetic.
+	* generic/tclVar.c (Tcl_ArrayObjCmd): [Bug 2939073]: Stop the [array
+	unset] command from having dangling pointer problems when an unset
+	trace deletes the element that is going to be processed next. Many
+	thanks to Alexandre Ferrieux for the bulk of this fix.
 
-	* macosx/tclMacOSXNotify.c:	fix warnings.
+2010-02-01  Donal K. Fellows  <dkf@users.sf.net>
 
-	* macosx/README:		sync whitespace/formatting with HEAD.
-	* macosx/tclMacOSXBundle.c:
-	* macosx/tclMacOSXNotify.c:
-	* unix/tclLoadDyld.c:
+	* generic/regexec.c (ccondissect, crevdissect): [Bug 2942697]: Rework
+	these functions so that certain pathological patterns are matched much
+	more rapidly. Many thanks to Tom Lane for dianosing this issue and
+	providing an initial patch.
 
-	* macosx/Makefile:		fix/add copyright and license refs.
-	* macosx/tclMacOSXBundle.c:
-	* macosx/Tcl-Info.plist.in:
+2010-02-01  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* unix/Makefile.in (dist): copy license.terms to dist macosx dir.
-	* unix/configure.in: install license.terms into Tcl.framework.
-	* unix/configure: autoconf-2.13
+	* generic/tclInt.decls:		Various CYGWIN-related fixes
+	* generic/tclInt.h:		backported from HEAD. Still
+	* generic/tclIntPlatDecls.h:	configure script not modified,
+	* generic/tclPort.h:		so CYGWIN build is still
+	* generic/tclTest.c:		disabled. Reason: although the
+	* win/cat.c:			build succeeds with those changes,
+	* win/tclWinDde.c:		many tests still fail.
+	* win/tclWinError.c:
+	* win/tclWinFile.c:
+	* win/tclWinPipe.c:
+	* win/tclWinPort.h:
+	* win/tclWinReg.c:
+	* win/tclWinSerial.c:
+	* win/tclWinSock.c:
+	* win/tclWinTest.c:
+	* win/tclWinThrd.c:
 
-2007-04-21  Kevin B. Kenny  <kennyb@acm.org>
+2010-01-29  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclClock.c:	     Restored Cygwin buildability [Bug 1387154]
-	* generic/tclInt.decls:      Yet another round of attempting
-	* generic/tclInt.h:          to get the correct type signature
-	* unix/tclUnixPort.h:        for TclpLocaltime and TclpGmtime.
-	* unix/tclUnixTime.c:        CONST TclpTime_t is a 'time_t *CONST'
-	* win/tclWinTime.c:          and not a 'CONST time_t*' [Bug 1677275]
-	* generic/tclIntDecls.h:
-	* generic/tclIntPlatDecls.h: Regenerated.
+	* generic/tcl.h:	Use correct TCL_LL_MODIFIER for CYGWIN.
+				Formatting (all backported from HEAD)
+	* generic/rege_dfa.c:	Fix macro conflict on CYGWIN: don't use
+				"small".
+	* generic/tclTest.c:	Fix gcc 4.4 warning: ignoring return value of
+	* unix/tclUnixPipe.c:	'write'
+	* unix/tclUnixNotify.c:
 
-2007-03-24  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2010-01-19  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/tclWinThrd.c: Thread exit handler marks the current
-	thread as un-initialized. This allows exit handlers that
-	are registered later to re-initialize this subsystem in
-	case they need to use some sync primitives (cond variables)
-	from this file again.
+	* doc/dict.n: [Bug 2929546]: Clarify just what [dict with] and [dict
+	update] are doing with variables.
 
-2007-03-19  Don Porter  <dgp@users.sourceforge.net>
+2010-01-18  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclEvent.c (Tcl_CreateThread):	Replaced some calls to
-	* generic/tclPkg.c (CheckVersion):	Tcl_Alloc() with calls to
-	* unix/tclUnixTime.c (SetTZIfNecessary):	ckalloc(), which better
-	* win/tclAppInit.c (setargv):	supports memory debugging.
+	* generic/tclIO.c (CreateScriptRecord): [Bug 2918110]: Initialize
+	the EventScriptRecord (esPtr) fully before handing it to
+	Tcl_CreateChannelHandler for registration. Otherwise a reflected
+	channel calling 'chan postevent' (== Tcl_NotifyChannel) in its
+	'watchProc' will cause the function 'TclChannelEventScriptInvoker'
+	to be run on an uninitialized structure.
 
-2007-03-17  Kevin Kenny  <kennykb@acm.org>
+2010-01-18  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/tclWinReg.c (GetKeyNames): Size the buffer for enumerating
-	key names correctly, so that Unicode names exceeding 127 chars
-	can be retrieved without crashing. [Bug 1682211]
-	* tests/registry.test (registry-4.9): Added test case for the
-	above bug.
+	* generic/tclStringObj.c (Tcl_AppendFormatToObj): [Bug 2932421]: Stop
+	the [format] command from causing argument objects to change their
+	internal representation when not needed. Thanks to Alexandre Ferrieux
+	for this fix.
 
-2007-03-13  Don Porter  <dgp@users.sourceforge.net>
+2010-01-06  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclExecute.c (INST_FOREACH_STEP4):	Re-fetch pointers for
-	* tests/foreach.test (foreach-10.1):	the value list each iteration
-	of the loop as defense against shimmers.  [Bug 1671087]
+	* generic/tclCompExpr.c: Warning: array subscript has type 'char'
+	* generic/tclPkg.c:
+	* libtommath/bn_mp_read_radix.c:
+	* unix/tclUnixCompat.c:	Fix gcc warning: signed and unsigned type
+				in conditional expression.
+	* unix/tcl.m4: Add support for Haiku and CYGWIN dynamical loading
+	* unix/configure: (regenerated)
+	* unix/Makefile.in:
+	* unix/.cvsignore:
+	* tests/stack.test: Reduced minimum required C-stack size to 2034:
+			    CYGWIN has this stack size and the test runs fine!
+	* generic/tclEnv.c: Fix environment tests under CYGWIN
+	* generic/tclPort.h:
+	* tests/env.test:
 
-	* generic/tclVar.c (TclArraySet):	Re-fetch pointers for the list
-	* tests/var.test (var-17.1):	argument of [array set] each time
-	through the loop as defense against possible shimmer issues.
-	[Bug 1669489].
+2010-01-05  Don Porter  <dgp@users.sourceforge.net>
 
-2007-03-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclPathObj.c (TclPathPart):	[Bug 2918610]: Correct
+	* tests/fileName.test (filename-14.31):	inconsistency between the
+	string rep and the intrep of a path value created by [file rootname].
+	Thanks to Vitaly Magerya for reporting.
 
-	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Handle tricky case with loss
-	* tests/cmdIL.test (cmdIL-1.29):of list rep during sorting due
-	to shimmering. [Bug 1675116]
+2010-01-03  Donal K. Fellows  <dkf@users.sf.net>
 
-2007-03-07  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): [Bug 1636685]: Use the configuration
+	for modern FreeBSD suggested by the FreeBSD porter.
 
-	* macosx/tclMacOSXNotify.c: add spinlock debugging and sanity checks.
+2009-12-30  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/tcl.m4 (Darwin): s/CFLAGS/CPPFLAGS/ in macosx-version-min check.
-	* unix/configure: autoconf-2.13
+	* library/safe.tcl (AliasSource): [Bug 2923613]: Make the safer
+	* tests/safe.test (safe-8.9):	  [source] handle a [return] at the
+					  end of the file correctly.
 
-2007-03-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2009-12-29  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclCompCmds.c (TclCompileForeachCmd): Prevent an unexpected
-	* tests/foreach.test (foreach-9.1):		infinite loop when the
-	variable list is empty and the foreach is compiled. [Bug 1671138]
+	* generic/tclInterp.c (Tcl_MakeSafe): [Bug 2895741]: Make sure that
+	the min() and max() functions are supported in safe interpreters.
 
-2007-02-22  Andreas Kupries  <andreask@activestate.com>
+2009-12-28  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tests/pkg.test: Added tests for the case of an alpha package
-	  satisfying a require for the regular package, demonstrating a
-	  corner case specified in TIP#280. More notes in the comments to
-	  the test.
+	* unix/configure.in: [Bug 942170]:	Detect the st_blocks field of
+	* generic/tclCmdAH.c (StoreStatData):	'struct stat' correctly.
+	* generic/tclIOUtil.c (Tcl_Stat, Tcl_FSStat):
+	* generic/tclTest.c (PretendTclpStat):
 
-2007-02-20  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclInterp.c (TimeLimitCallback): [Bug 2891362]: Ensure that
+	* tests/interp.test (interp-34.13):	   the granularity ticker is
+	reset when we check limits because of the time limit event firing.
 
-	* doc/tcltest.n:	Typo fix.  [Bug 1663539]
+2009-12-27  Donal K. Fellows  <dkf@users.sf.net>
 
-2007-02-19  Jeff Hobbs  <jeffh@ActiveState.com>
+	* doc/namespace.n (SCOPED SCRIPTS): [Bug 2921538]: Updated example to
+	not be quite so ancient.
 
-	* generic/tclIOUtil.c (Tcl_FSEvalFile): safe incr of objPtr ref.
+2009-12-23  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/tcl.m4: use SHLIB_SUFFIX=".so" on HP-UX ia64 arch.
-	* unix/configure: autoconf-2.13
+	* library/safe.tcl (AliasSource, AliasExeName): [Bug 2913625]: Stop
+	information about paths from leaking through [info script] and [info
+	nameofexecutable].
 
-2007-02-12  Andreas Kupries  <andreask@activestate.com>
+2009-12-16  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclEncoding.c (EscapeFromUtfProc): Applied patch
-	  supplied by Mo DeJong to fix [Bug 1516109]. Backport from Tcl
-	  8.5. Mo's description: Clear the TCL_ENCODING_END flag when end
-	  bytes are written. This fix keep this method from writing escape
-	  bytes for an encoding like iso2022-jp multiple times when the
-	  escape byte overlap with the end of the IO buffer.
-	* tests/io.test: Add test case for escape byte overlap case.
+	* library/safe.tcl (::safe::AliasGlob): Upgrade to correctly support a
+	larger fraction of [glob] functionality, while being stricter about
+	directory management.
 
-2007-02-04  Daniel Steffen  <das@users.sourceforge.net>
+	* doc/tm.n: [Bug 1911342]: Formatting rewrite to avoid bogus crosslink
+	to the list manpage when generating HTML.
 
-	* unix/configure.in: add caching to -pipe check.
-	* unix/configure: autoconf-2.13
+	* library/msgcat/msgcat.tcl (Init): [Bug 2913616]: Do not use platform
+	tests that are not needed and which don't work in safe interpreters.
 
-2007-01-30  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-12-12  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/Makefile.in (install-private-headers): added target
+	* generic/tclTest.c (TestconcatobjCmd): [Bug 2895367]: Stop memory
+	leak when testing. We don't need extra noise of this sort when
+	tracking down real problems!
 
-2007-01-29  Don Porter  <dgp@users.sourceforge.net>
+2009-12-10  Andreas Kupries  <andreask@activestate.com>
 
-	* doc/fcopy.n:	Typo fix. [Bug 1630627]
+	* generic/tclObj.c (TclContinuationsEnter): [Bug 2895323]: Updated
+	comments to describe when the function can be entered for the same
+	Tcl_Obj* multiple times. This is a continuation of the 2009-11-10
+	entry where a memory leak was plugged, but where not sure if that was
+	just a band-aid to paper over some other error. It isn't, this is a
+	legal situation.
 
-2007-01-25  Daniel Steffen  <das@users.sourceforge.net>
+2009-12-09  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tcl.m4:       integrate CPPFLAGS into CFLAGS as late as possible
-	* unix/configure.in: and move (rather than duplicate) -isysroot flags
-	from CFLAGS to CPPFLAGS to avoid errors about multiple -isysroot flags
-	from some older gcc builds.
+	* library/safe.tcl: Backport of the streamlined safe base from
+	* tests/safe.test: head to the 8.5 branch (See head changelog entries
+	2009-11-05, 2009-11-06, 2009-12-03).
 
-	* unix/configure: autoconf-2.13
+2009-12-07  Don Porter  <dgp@users.sourceforge.net>
 
-2007-01-22  Andreas Kupries <andreask@activestate.com>
+	* generic/tclStrToD.c:	[Bug 2902010]: Correct conditional compile
+	directives to better detect the toolchain that needs extra work for
+	proper underflow treatment instead of merely detecting the MIPS
+	platform.
 
-	* compat/memcmp.c (memcmp): Fixed the VOID / CONST typo introduced
-	  by the last checkin.
+2009-12-02  Jan Nijtmans  <nijtmans@users.sf.net>
 
-2007-01-22  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* tools/genStubs.tcl: Add support for win32 CALLBACK functions (needed
+	for Tk bugfix).
 
-	* compat/memcmp.c (memcmp): Reworked so that arithmetic is never
-	performed upon void pointers, since that is illegal. [Bug 1631017]
+2009-11-30  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-01-19  Daniel Steffen  <das@users.sourceforge.net>
+	* doc/Tcl.n: [Bug 2901433]: Improved description of expansion to
+	mention that it is using list syntax.
 
-	* macosx/tclMacOSXNotify.c: accommodate changes to prototypes of
-	OSSpinLock(Un)Lock API.
+2009-11-27  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tests/env.test: add extra system env vars that need to be preserved
-	on some Mac OS X versions for testsuite to work.
+	* doc/BoolObj.3, doc/CrtChannel.3, doc/DictObj.3, doc/DoubleObj.3:
+	* doc/Ensemble.3, doc/Environment.3, doc/FileSystem.3, doc/Hash.3:
+	* doc/IntObj.3, doc/Limit.3, doc/ObjectType.3, doc/PkgRequire.3:
+	* doc/SetChanErr.3, doc/SetResult.3: [Patch 2903921]: Many small
+	spelling fixes from Larry Virden.
 
-	* unix/tcl.m4: ensure CPPFLAGS env var is used when set. [Bug 1586861]
-	(Darwin): add -isysroot and -mmacosx-version-min flags to CPPFLAGS when
-	present in CFLAGS to avoid discrepancies between what headers configure
-	sees during preprocessing tests and compiling tests.
+2009-11-25  Stuart Cassoff  <stwo@users.sf.net>
 
-	* unix/configure: autoconf-2.13
+	* unix/configure.in:	[Patch 2892871]: Remove unneeded
+	* unix/tcl.m4:		AC_STRUCT_TIMEZONE and use
+	* unix/tclConfig.h.in:	AC_CHECK_MEMBERS([struct stat.st_blksize])
+	* unix/tclUnixFCmd.c:	instead of AC_STRUCT_ST_BLKSIZE.
+	* unix/configure:	Regenerated with autoconf-2.59.
 
-2006-12-19  Daniel Steffen  <das@users.sourceforge.net>
+2009-11-16  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	* unix/tclUnixThrd.c (TclpInetNtoa): fix for 64 bit.
+	* generic/tclEncoding.c: Fix [Bug 2891556] and improve test to detect
+	* tests/decoding.test:   similar manifestations in the future.
 
-	* unix/tcl.m4 (Darwin): --enable-64bit: verify linking with 64bit -arch
-	flag succeeds before enabling 64bit build.
-	* unix/configure: autoconf-2.13
+2009-11-12  Don Porter  <dgp@users.sourceforge.net>
 
-2006-12-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	*** 8.5.8 TAGGED FOR RELEASE ***
 
-	* doc/string.n: Fix example. [Bug 1615277]
+	* changes:	Update for 8.5.8 release.
 
-2006-12-05  Andreas Kupries <andreask@activestate.com>
+	* generic/tclClock.c (TclClockInit):	Do not create [clock] support
+	commands in safe interps.
 
-	* tests/pkg.test:   Backport to 8.4 (Don Porter's work):
-	* generic/tclPkg.c: When no requirements are supplied to a [package
-	require $pkg] and [package unknown] is invoked to find a satisfying
-	package, pass the requirement argument "0-" (which means all versions
-	are acceptable). This permits a registered [package unknown] command
-	to call [package vsatisfies $testVersion {*}$args] without any special
-	handling of the empty $args case. This fixes/avoids a bug in
-	[::tcl::tm::UnknownHandler] that was causing old TM versions to be
-	provided in preference to newer TM versions. Thanks to Julian Noble
-	for discovering the issue.
+	* tests/io.test:	New test io-53.11 to test for [Bug 2895565].
 
-2006-12-04  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2009-11-12  Andreas Kupries  <andreask@activestate.com>
 
-	* doc/file.n: Fix confusing wording for [file pathtype]. [Bug 1606454]
+	* generic/tclIO.c (CopyData): [Bug 2895565]: Dropped bogosity which
+	used the number of _written_ bytes or character to update the counters
+	for the read bytes/characters. See last entry for the test case.
 
-2006-11-28  Andreas Kupries  <andreask@activestate.com>
+2009-11-11  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* generic/tclBasic.c: TIP #280 implementation, conditional on the
-	* generic/tclCmdAH.c: define TCL_TIP280.
-	* generic/tclCmdIL.c:
-	* generic/tclCmdMZ.c:
-	* generic/tclCompCmds.c:
-	* generic/tclCompExpr.c:
-	* generic/tclCompile.c:
-	* generic/tclCompile.h:
-	* generic/tclExecute.c:
-	* generic/tclIOUtil.c:
-	* generic/tclInt.h:
-	* generic/tclInterp.c:
-	* generic/tclNamesp.c:
-	* generic/tclObj.c:
-	* generic/tclProc.c:
-	* tests/compile.test:
-	* tests/info.test:
-	* tests/platform.test:
-	* tests/safe.test:
+	* tests/fCmd.test:     Fixed a number of issues for Vista and Win7
+	* tests/registry.test: that are due to restricted permissions.
+	* tests/winFCmd.test:
 
-2006-11-27  Kevin Kenny  <kennykb@acm.org>
+2009-11-11  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixChan.c (TclUnixWaitForFile):
-	* tests/event.test (event-14.*): Corrected a bug where
-	TclUnixWaitForFile would present select() with the wrong mask on an
-	LP64 machine if a fd number exceeds 32. Thanks to Jean-Luc Fontaine
-	for reporting and diagnosing [Bug 1602208]
+	* library/http/http.tcl:	[Bug 2891171]: Update the URL syntax
+	check to RFC 3986 compliance on the subject of non-encoded question
+	mark characters.
 
-2006-11-26  Daniel Steffen  <das@users.sourceforge.net>
+	* library/http/pkgIndex.tcl:	Bump to http 2.7.5 to avoid any
+	* unix/Makefile.in:		confusion with snapshot "releases"
+	* win/Makefile.in:		that might be in ActiveTcl, etc.
 
-	* unix/tcl.m4 (Linux): --enable-64bit support.	[Patch 1597389]
-	* unix/configure: autoconf-2.13			[Bug 1230558]
+2009-11-11  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-2006-11-07  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclIO.c: Backported fix for [Bug 2888099] (close discards
+	ENOSPC error) by saving the errno from the first of two
+	FlushChannel()s. Uneasy to test; might need specific channel drivers.
+	Four-hands with aku.
 
-	* unix/tclUnixFCmd.c (CopyFile): Added code to fall back to a
-	hardwired default block size should the filesystem report a bogus
-	value. [Bug 1586470]
+2009-11-10  Don Porter  <dgp@users.sourceforge.net>
 
-2006-11-03  Miguel Sofer  <msofer@users.sf.net>
+	* generic/tclBasic.c:	Plug another leak in TCL_EVAL_DIRECT
+	evaluation.
 
-	* generic/tclBasic.c (TEOVI): fix for possible leak of a Command in
-	the presence of execution traces that delete it.
+	* generic/tclObj.c:	Plug memory leak in TclContinuationsEnter().
+	[Bug 2895323]
 
-	* generic/tclBasic.c (TEOVI):
-	* tests/trace.test (trace-21.11): fix for [Bug 1590232], execution
-	traces may cause a second command resolution in the wrong
-	namespace.
+2009-11-09  Stuart Cassoff <stwo@users.sf.net>
 
-2006-11-01  Daniel Steffen  <das@users.sourceforge.net>
+	* win/README: [bug 2459744]: Removed outdated Msys + Mingw info.
 
-	* generic/tclEnv.c (Darwin): mark _environ symbol as unexported.
+2009-11-09  Don Porter  <dgp@users.sourceforge.net>
 
-2006-10-31  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* generic/tclBasic.c (TclEvalObjEx):	Plug memory leak in
+	TCL_EVAL_DIRECT evaluation.
 
-	* rules.vc: Fix [Bug 1582769] build with VC2003 and correct i386 arch
+	* tests/info.test:	Resolve ambiguous resolution of variable "res".
 
-2006-10-23  Don Porter  <dgp@users.sourceforge.net>
+2009-11-03  Don Porter  <dgp@users.sourceforge.net>
 
-	* README:		Bump version number to 8.4.15
-	* generic/tcl.h:
+	* generic/tcl.h:	Bump to 8.5.8 for release.
+	* library/init.tcl:
 	* tools/tcl.wse.in:
 	* unix/configure.in:
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
+	* README:
 
-	* unix/configure:	autoconf-2.13
+	* unix/configure:	autoconf-2.59
 	* win/configure:
 
-2006-10-18  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* changes:	Update for 8.5.8 release.
 
-	*** 8.4.14 TAGGED FOR RELEASE ***
+2009-11-03  Andreas Kupries  <andreask@activestate.com>
 
-	* win/nmakehlp.c: Ensure builds with VC6 without Platform SDK.
-	* win/rules.vc:	  Pickup MACHINE from environment.
+	* library/safe.tcl (::safe::InterpSetConfig): [Bug 2854929]: Added
+	code to recursively find deeper paths which may contain modules.
+	Required to handle modules with names like 'platform::shell', which
+	translate into 'platform/shell-X.tm', i.e arbitrarily deep
+	subdirectories.
 
-2006-10-17  Don Porter  <dgp@users.sourceforge.net>
+2009-11-03  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclIOUtil.c:	Cleaned up some code flagged by a
-	* generic/tclInt.h:	`make checkexports` test.
-	* win/tclWin32Dll.c:
-	* win/tclWinFile.c:
-
-2006-10-16  Daniel Steffen  <das@users.sourceforge.net>
-
-	* changes: updates for 8.4.14 release.
-
-	* macosx/Makefile: don't redo prebinding of non-prebound binaires.
-
-2006-10-11  Andreas Kupries  <andreask@activestate.com>
+	* library/tzdata/Asia/Novokuznetsk: New tzdata locale for Kemerovo
+	oblast', which now keeps Novosibirsk time and not Kranoyarsk time.
+	* library/tzdata/Asia/Damascus: Syrian DST changes.
+	* library/tzdata/Asia/Hong_Kong: Hong Kong historic DST corrections.
+	Olson tzdata2009q.
 
-	* generic/tclPkg.c (Tcl_PkgRequireEx): Corrected crash when argument
-	version==NULL passed in. Backport of the fix for the same problem in
-	8.5.
+2009-11-03  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2006-10-10  Don Porter  <dgp@users.sourceforge.net>
+	* tests/tcltest.test: Backport permissions fix for Win7.
 
-	* changes:		changes updated for 8.4.14 release.
+2009-10-31  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-10-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclBasic.c (ExprRoundFunc): [Bug 2889593]: Correctly report
+	the expected number of arguments when generating an error for round().
 
-	* tests/http.test: update tests to handle strictness change.
+2009-10-29  Don Porter  <dgp@users.sourceforge.net>
 
-2006-10-06  Pat Thoyts  <patthoyts@users.sourceforge.net>
-
-	* win/rules.vc: avoid /RTCc flag with MSVC8. [Bug 1571954]
-
-2006-10-05  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* library/http/http.tcl (http::geturl): only do geturl url rfc 3986
-	validity checking if $::http::strict is true (default false for 8.4).
-	[Bug 1560506]
+	* generic/tcl.h:	[Bug 2800740]: Changed the typedef for the
+	mp_digit type from:
+		typedef unsigned long mp_digit;
+	to:
+		typedef unsigned int mp_digit;
+	For 32-bit builds where "long" and "int" are two names for the same
+	thing, this is no change at all. For 64-bit builds, though, this
+	causes the dp[] array of an mp_int to be made up of 32-bit elements
+	instead of 64-bit elements. This is a huge improvement because details
+	elsewhere in the mp_int implementation cause only 28 bits of each
+	element to be actually used storing number data. Without this change
+	bignums are over 50% wasted space on 64-bit systems.
 
-	* generic/tcl.h: note limitation on changing Tcl_UniChar size
-	* generic/tclEncoding.c (UtfToUnicodeProc, UnicodeToUtfProc):
-	* tests/encoding.test (encoding-16.1): fix alignment issues in
-	unicode <> utf conversion procs. [Bug 1122671]
-
-2006-10-05  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclVar.c (Tcl_LappendObjCmd):
-	* tests/append.test(4.21-22): fix for longstanding [Bug 1570718],
-	lappending nothing to non-list. Reported by lvirden
-
-2006-10-02  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclFileName.c (TclGlob):	Prevent doubling of directory
-	separators by [glob]. [Bug 1569042]
-
-2006-10-01  Pat Thoyts  <patthoyts@users.sourceforge.net>
-
-	* win/tclWinFile.c: Handle possible missing define.
-	* win/tclWinFile.c: Backported fix for [Bug 1420432] (cannot set
-	* tests/cmdAH.test: mtime for directories on windows).
-
-2006-09-30  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclUtil.c (Tcl_SplitList): optimisation, [Patch 1344747]
-	by dgp.
-
-2006-09-26  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	***POTENTIAL INCOMPATIBILITY***
+	For 64-bit builds, callers of routines with (mp_digit) or (mp_digit *)
+	arguments *will*, and callers of routines with (mp_int *) arguments
+	*may* suffer both binary and stubs incompatibilities with Tcl releases
+	8.5.0 - 8.5.7.  Such possibilities should be checked, and if such
+	incompatibilities are present, suitable [package require] requirements
+	on the Tcl release should be put in place to keep such built code
+	[load]-ing only in Tcl interps that are compatible.
+
+2009-10-29  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl (LocalizeFormat):
+	* tests/clock.test (clock-67.1): [Bug 2819334]:
+	Corrected a problem where '%%' followed by a letter in a format group
+	could expand recursively: %%R would turn into %%H:%M:%S.
+
+2009-10-28  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclLiteral.c:	Backport fix for [Bug 2888044].
+
+2009-10-28  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/fileName.test (fileName-20.[78]): Corrected poor test
+	hygiene (failure to save and restore the working directory) that
+	caused these two tests to fail on Windows (and [Bug 2806250] to be
+	reopened).
+
+2009-10-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclPathObj.c: [Bug 2884203]: Missing refcount on cached
+	normalized path caused crashes.
+
+2009-10-27  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl (ParseClockScanFormat): [Bug 2886852]:
+	Corrected a problem where [clock scan] didn't load the timezone soon
+	enough when processing a time format that lacked a complete date.
+	* tests/clock.test (clock-66.1):
+	Added a test case for the above bug.
+	* library/tzdata/America/Argentina/Buenos_Aires:
+	* library/tzdata/America/Argentina/Cordoba:
+	* library/tzdata/America/Argentina/San_Luis:
+	* library/tzdata/America/Argentina/Tucuman:
+	New DST rules for Argentina. (Olson's tzdata2009p.)
+
+2009-10-24  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl (ProcessPosixTimeZone):
+	Corrected a regression in the fix to [Bug 2207436] that caused [clock]
+	to apply EU daylight saving time rules in the US. Thanks to Karl
+	Lehenbauer for reporting this regression.
+	* tests/clock.test (clock-52.4):
+	Added a regression test for the above regression.
+	* library/tzdata/Asia/Dhaka:
+	* library/tzdata/Asia/Karachi:
+	New DST rules for Bangladesh and Pakistan. (Olson's tzdata2009o.)
 
-	* win/makefile.vc:  Updated MSVC build to properly deal with
-	* win/nmakehlp.c:   MSVC8 and AMD64 target. Backport from 8.5
-	* win/rules.vc:
-	* generic/tcl.h:    Fixed stat definition for MSVC8 AMD64.
-	* win/tclWinSock.c: Casting type police.
-	* win/tclWinTime.c:
+2009-10-23  Andreas Kupries  <andreask@activestate.com>
 
-2006-09-26  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclIO.c (FlushChannel): Skip OutputProc for low-level
+	0-length writes. When closing pipes which have already been closed not
+	skipping leads to spurious SIG_PIPE signals. Reported by Mikhail
+	Teterin <mi+thun@aldan.algebra.com>.
 
-	* generic/tcl.h:	As 2006-09-22 commit from Donal K. Fellows
-	demonstrates, "#define NULL 0" is just wrong, and as a quotable chat
-	figure observed, "If NULL isn't defined, we're not using a C compiler."
-	Improper fallback definition of NULL removed.
+2009-10-21  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-09-25  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclPosixStr.c: [Bug 2882561]: Work around oddity on Haiku OS
+	where SIGSEGV and SIGBUS are the same value.
 
-	* generic/tclIO.c (Tcl_StackChannel): Fixed [SF Tcl Bug 1564642], aka
-	coverity #51. Extended loop condition, added checking for NULL to
-	prevent seg.fault.
+2009-10-19  Don Porter  <dgp@users.sourceforge.net>
 
-2006-09-25  Andreas Kupries <andreask@activestate.com>
+	* generic/tclIO.c:	Revised ReadChars and FilterInputBytes
+	routines to permit reads to continue up to the string limits of Tcl
+	values. Before revisions, large read attempts could panic when as
+	little as half the limiting value length was reached. [Patch 2107634]
+	Thanks to Sean Morrison and Bob Parker for their roles in the fix.
 
-	* generic/tclBasic.c: Reverted exposure of patchlevel in registered
-	core version when TIP#268 features are activated. Better compatibility
-	with existing packages. Like Tk.
+2009-10-18  Joe Mistachkin  <joe@mistachkin.com>
 
-2006-09-24  Miguel Sofer  <msofer@users.sf.net>
+	* tests/thread.test (thread-4.[345]): [Bug 1565466]: Correct tests to
+	save their error state before the final call to threadReap just in
+	case it triggers an "invalid thread id" error.  This error can occur
+	if one or more of the target threads has exited prior to the attempt
+	to send it an asynchronous exit command.
 
-	* generic/tclParse.c (Tcl_ParseCommand): also return an error if
-	start==NULL and numBytes<0. This is coverity's bug #20
+	* doc/memory.n: [Bug 988703]: Add mechanism for finding what Tcl_Objs
+	* generic/tclCkalloc.c (MemoryCmd): are allocated when built for
+	* generic/tclInt.decls: memory debugging. This was previously
+	* generic/tclInt.h: backported from Tcl 8.6 with the corrections to
+	* generic/tclObj.c (ObjData, TclFinalizeThreadObjects): fix [Bug
+	2871908]. However, there were key elements missing. These changes make
+	things consistent between branches.
 
-	* generic/tclStringObj.c (STRING_SIZE): fix allocation for 0-length
-	strings. This is coverity's bugs #54-5
+2009-10-17  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-09-22  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclVar.c (TclDeleteCompiledLocalVars, UnsetVarStruct)
+	(TclDeleteNamespaceVars):
+	* generic/tclTrace.c (Tcl_UntraceVar2): [Bug 2629338]: Stop traces
+	that are deleted part way through (a feature used by tdom) from
+	causing freed memory to be accessed.
 
-	* generic/tclInt.h: Moved TIP#268's field 'packagePrefer' to the end
-	of the structure, for better backward compatibility.
+2009-10-08  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-09-22  Andreas Kupries <andreask@activestate.com>
+	* generic/tclDictObj.c (DictIncrCmd): [Bug 2874678]: Don't leak any
+	bignums when doing [dict incr] with a value.
+	* tests/dict.test (dict-19.3): Memory leak detection code.
 
-	* generic/tclPkg.c (Tcl_PkgRequireEx): Changes handling of the return
-	information from 'Tcl_PkgRequireProc'. Keep the interpreter result
-	empty. Backport of fix for problem found while testing #268 under 8.5.
-	More details in the comments.
+2009-10-07  Andreas Kupries  <andreask@activestate.com>
 
-2006-09-22  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclObj.c: [Bug 2871908]: Plug memory leaks of the
+	objThreadMap and lineCLPtr hashtables.  Also make the names of the
+	continuation line information initialization and finalization
+	functions more consistent. Patch supplied by Joe Mistachkin
+	<joe@mistachkin.com>.
 
-	* generic/tclThreadTest.c (TclCreateThread): Use NULL instead of 0 as
-	end-of-strings marker to Tcl_AppendResult; the difference matters on
-	64-bit machines. [Bug 1562528]
+	* generic/tclIORChan.c (ErrnoReturn): Replace the hardwired constant
+	11 with the proper errno define, EAGAIN. What was I thinking? The
+	BSD's have a different errno assignment and break with the hardwired
+	number. Reported by emiliano on the chat.
 
-2006-09-21  Andreas Kupries <andreask@activestate.com>
+2009-10-06  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tcl.decls:  Implemented TIP #268, conditionally.
-	* generic/tclBasic.c: Define TCL_TIP268 to activate the new
-	* generic/tclDecls.h: features.
-	* generic/tclInt.h:
-	* generic/tclPkg.c:
-	* generic/tclStubInit.c:
-	* generic/tclTest.c:
-	* library/init.tcl
-	* library/package.tcl:
-	* tests/pkg.test:
-	* tests/platform.test:
-	* tests/safe.test:
-	* doc/PkgRequire.3:
+	* generic/tclTomMathInt.h (new): Public header tclTomMath.h had
+	* generic/tclTomMath.h: dependence on private headers, breaking use
+	* generic/tommath.h:    by extensions [Bug 1941434].
 
-2006-09-15  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-10-05  Don Porter  <dgp@users.sourceforge.net>
 
-	* library/http/http.tcl:      Change " " -> "+" url encoding mapping
-	* library/http/pkgIndex.tcl:  to " " -> "%20" as per RFC 3986.
-	* tests/http.test (http-5.1): bump http to 2.5.3 for 8.4.14
+	* changes:	Update for 8.5.8 release.
 
-2006-09-12  Andreas Kupries  <andreask@activestate.com>
+2009-10-04  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/configure.in (HAVE_MTSAFE_GETHOST*): Modified to recognize
-	HP-UX 11.00 and beyond as having mt-safe implementations of the
-	gethost functions.
-	* unix/configure: Regenerated, using autoconf 2.13
+	* macosx/tclMacOSXBundle.c:	Workaround CF memory managment bug in
+	* unix/tclUnixInit.c:		Mac OS X 10.4 & earlier. [Bug 2569449]
 
-	* unix/tclUnixCompat.c (PadBuffer): Fixed bug in calculation of the
-	increment needed to align the pointer, and added documentation
-	explaining why the macro is implemented as it is.
+2009-10-02  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-09-11  Andreas Kupries  <andreask@activestate.com>
+	* library/tzdata/Africa/Cairo:
+	* library/tzdata/Asia/Gaza:
+	* library/tzdata/Asia/Karachi:
+	* library/tzdata/Pacific/Apia:	Olson's tzdata2009n.
 
-	* tests/msgcat.test: Bumped version in auxiliary files as well.
-	* doc/msgcat.n:
+2009-09-29  Don Porter  <dgp@users.sourceforge.net>
 
-2006-09-11  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclAlloc.c:           Cleaned up various routines in the
+	* generic/tclCkalloc.c:         call stacks for memory allocation to
+	* generic/tclInt.h:		guarantee that any size values computed
+	* generic/tclThreadAlloc.c:     are within the domains of the routines
+	they get passed to.  [Bugs 2557696 and 2557796].
 
-	* unix/tclUnixCompat.c: make compatLock static and only declare it
-	when it will actually be used; #ifdef parts of TSD that are not always
-	needed; adjust #ifdefs to cover all possible cases; fix whitespace.
+2009-09-11  Don Porter  <dgp@users.sourceforge.net>
 
-2006-09-10  Don Porter  <dgp@users.sourceforge.net>
+	* library/http/http.tcl:	Bump to http 2.7.4 to account for
+	* library/http/pkgIndex.tcl:	[Bug 2849860] fix.
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
-	* library/msgcat/msgcat.tcl:	Bump to version msgcat 1.3.4 to account
-	* library/msgcat/pkgIndex.tcl:	for modifications.
+2009-09-10  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-09-10  Daniel Steffen  <das@users.sourceforge.net>
+	* library/http/http.tcl (http::Event): [Bug 2849860]: Handle charset
+	names in double quotes; some servers like generating them like that.
 
-	* library/msgcat/msgcat.tcl (msgcat::Init): on Darwin, add fallback of
-	* tests/msgcat.test:			    default msgcat locale to
-	* unix/tclUnixInit.c (TclpSetVariables):    current CFLocale
-	identifier if available (via private ::tcl::mac::locale global, set at
-	interp init when on Mac OS X 10.3 or later with CoreFoundation).
+2009-09-01  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tcl.m4: add caching to new SC_TCL_* macros for MT-safe wrappers
-	* unix/configure: autoconf-2.13
+	* library/tcltest/tcltest.tcl:	Bump to tcltest 2.3.2 after revision
+	* library/tcltest/pkgIndex.tcl:	to verbose error message.
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
-2006-09-08  Andreas Kupries  <andreask@activestate.com>
+2009-08-27  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixCompat.c: Fixed conditions for CopyArray/CopyString, and
-	CopyHostent. Also fixed bad var names in TclpGetHostByName.
+	* generic/tclStringObj.c:	[Bug 2845535]: A few more string
+	overflow cases in [format].
 
-2006-09-08  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2009-08-25  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tclUnixCompat.c: Added fallback to gethostbyname() and
-	gethostbyaddr() if the implementation is known to be MT-safe
-	(currently for Darwin 6 or later only).
+	* generic/tclBasic.c (Tcl_CreateInterp, Tcl_EvalTokensStandard)
+	(EvalTokensStandard, Tcl_EvalEx, EvalEx, TclAdvanceContinuations)
+	(TclEvalObjEx):
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd, TclListLines):
+	* generic/tclCompCmds.c (*):
+	* generic/tclCompile.c (TclSetByteCodeFromAny, TclInitCompileEnv)
+	(TclFreeCompileEnv, TclCompileScript):
+	* generic/tclCompile.h (CompileEnv):
+	* generic/tclInt.h (ContLineLoc, Interp):
+	* generic/tclObj.c (ThreadSpecificData, ContLineLocFree)
+	(TclThreadFinalizeObjects, TclInitObjSubsystem, TclContinuationsEnter)
+	(TclContinuationsEnterDerived, TclContinuationsCopy)
+	(TclContinuationsGet, TclFreeObj):
+	* generic/tclParse.c (TclSubstTokens, Tcl_SubstObj):
+	* generic/tclProc.c (TclCreateProc):
+	* generic/tclVar.c (TclPtrSetVar):
+	* tests/info.test (info-30.0-24):
 
-	* unix/configure.in: Assume gethostbyname() and gethostbyaddr() are
-	MT-safe starting with Darwin 6 (Mac OSX 10.2).
+	Extended parser, compiler, and execution with code and attendant data
+	structures tracking the positions of continuation lines which are not
+	visible in script Tcl_Obj*'s, to properly account for them while
+	counting lines for #280.
 
-	* unix/configure: Regenerated with autoconf V2.13
+2009-08-24  Daniel Steffen  <das@users.sourceforge.net>
 
-2006-09-07  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* macosx/tclMacOSXNotify.c: Fix multiple issues with nested event
+	loops when CoreFoundation notifier is running in embedded mode. (Fixes
+	problems in TkAqua Cocoa reported by Youness Alaoui on tcl-mac)
 
-	* unix/tclUnixFCmd.c: Removed some false tests added (and left by
-	mistake) by fixing [Bug 999544]
+2009-08-21  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixCompat.c: Added fallback to MT-unsafe library calls if
-	TCL_THREADS is not defined. Fixed alignment of arrays copied by
-	CopyArrayi() to be on the sizeof(char *) boundary.
+	* generic/tclFileName.c: Correct regression in [Bug 2837800] fix.
+	* tests/fileName.test:
 
-2006-09-07  Andreas Kupries <andreask@activestate.com>
+2009-08-20  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/configure: Regenerated using autoconf 2.13.
+	* generic/tclFileName.c: [Bug 2837800]: Get the correct result from
+	[glob */test] when * matches something like ~foo.
 
-2006-09-07  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* generic/tclPathObj.c:	[Bug 2806250]: Prevent the storage of strings
+	starting with ~ in the "tail" part (normPathPtr field) of the path
+	intrep when PATHFLAGS != 0.  This establishes the assumptions relied
+	on elsewhere that the name stored there is a relative path.  Also
+	refactored to make an AppendPath() routine instead of the cut/paste
+	stanzas that were littered throughout.
 
-	* unix/tclUnixChan.c   Rewritten MT-safe wrappers to
-	* unix/tclUnixCompat.c return ptrs to TSD storage
-	* unix/tclUnixFCmd.c   making them all look like their
-	* unix/tclUnixPort.h   MT-unsafe pendants API-wise.
-	* unix/tclUnixSock.c
+2009-08-20  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-09-06  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Plug memory leak.
 
-	* unix/tclUnixChan.c: Added TCL_THREADS ifdef'ed  usage
-	* unix/tclUnixFCmd.c: of MT-safe calls like:
-	* unix/tclUnixSock.c: getpwuid, getpwnam, getgrgid, getgrnam,
-	* unix/tclUnixPort.h: gethostbyname and gethostbyaddr.
-	* unix/Makefile.in:   See Tcl Bug: 999544
-	* unix/configure.in:
-	* unix/tcl.m4:
-	* unix/configure: Regenerated.
+2009-08-18  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixCompat.c: New file containing MT-safe implementation of
-	some library calls.
+	* generic/tclPathObj.c:	[Bug 2837800]: Added NULL check to prevent
+	* tests/fileName.test:	crashes during [glob].
 
-2006-09-04  Don Porter  <dgp@users.sourceforge.net>
+2009-08-06  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/main.text (Tcl_Main-4.4):	Test corrected to not be
-	timing sensitive to the Bug 1481986 fix. [Bug 1550858]
+	* doc/refchan.n [Bug 2827000]: Extended the implementation of
+	* generic/tclIORChan.c: reflective channels (TIP 219, method 'read'),
+	* tests/ioCmd.test: enabling handlers to signal EAGAIN to indicate 'no
+	data, but not at EOF either', and other system errors. Updated
+	documentation, extended testsuite (New test cases iocmd*-23.{9,10}).
 
-2006-09-04  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-08-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* doc/package.n: correct package example
+	* unix/tclUnixFCmd.c (GetOwnerAttribute, SetOwnerAttribute)
+	(GetGroupAttribute, SetGroupAttribute): [Bug 1942222]: Stop calling
+	* unix/tclUnixFile.c (TclpGetUserHome): endpwent() and endgrent();
+	they've been unnecessary for ages.
 
-2006-08-30  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-07-31  Don Porter  <dgp@users.sourceforge.net>
 
-	* win/tclWinChan.c: [Bug 819667] Improve logic for identifying COM
-	ports.
+	* generic/tclStringObj.c:       [Bug 2830354]: Corrected failure to
+	* tests/format.test:            grow buffer when format spec request
+	large width floating point values.  Thanks to Clemens Misch.
 
-	* win/tclWinFCmd.c:    [Bug 1548263] Added test for NULL return
-	* generic/tclIOUtil.c: from Tcl_FSGetNormalizedPath which was
-	causing segv's
+2009-07-24  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclFileName.c (TclDoGlob): match incr with existing decr.
+	* generic/tclIO.c (Tcl_GetChannelHandle): [Bug 2826248]: Do not crash
+	* generic/tclPipe.c (FileForRedirect): for getHandleProc == NULL, this
+	is allowed. Provide a nice error message in the bypass area. Updated
+	caller to check the bypass for a mesage. Bug reported by Andy
+	Sonnenburg <andy22286@users.sourceforge.net>. Backported from CVS
+	head.
 
-	* unix/Makefile.in: add valgrindshell target and update default
-	VALGRINDARGS. User can override, or add to it with VALGRIND_OPTS env
-	var.
+2009-07-23  Joe Mistachkin  <joe@mistachkin.com>
 
-	* generic/tclBasic.c (Tcl_CreateInterp): init iPtr->threadId
+	* generic/tclNotify.c: [Bug 2820349]: Ensure that queued events are
+	freed once processed.
 
-	* generic/tclIOGT.c (ExecuteCallback):
-	* generic/tclPkg.c (Tcl_PkgRequireEx): replace Tcl_GlobalEval(Obj)
-	with more efficient Tcl_Eval(Obj)Ex
+2009-07-21  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-08-22  Andreas Kupries <andreask@activestate.com>
+	* library/tzdata/Asia/Dhaka:
+	* library/tzdata/Indian/Mauritius: Olson's tzdata2009k.
 
-	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): Fixed broken if syntax
-	committed 2006-08-21 by Daniel. The broken syntax is visible to all
-	unix platforms, but not on OSX for machines which HAVE_COREFOUNDATION.
+2009-07-20  Donal K. Fellows  <dkf@users.sf.net>
 
-2006-08-21  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdMZ.c (StringIsCmd): Reorganize so that [string is] is
+	more efficient when parsing things that are correct, at a cost of
+	making the empty string test slightly more costly. With this, the cost
+	of doing [string is integer -strict $x] matches [catch {expr {$x+0}}]
+	in the successful case, and greatly outstrips it in the failing case.
 
-	* generic/tclIOUtil.c:	Revisions to complete the thread finalization
-	of the cwdPathPtr. [Bug 1536142]
+2009-07-16  Don Porter  <dgp@users.sourceforge.net>
 
-2006-08-21  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclCmdIL.c:	Removed unused variables.
+	* generic/tclCompile.c:
+	* generic/tclVar.c:
+	* unix/tclUnixChan.c:
 
-	* macosx/tclMacOSXNotify.c (Tcl_WaitForEvent): if the run loop is
-	already running (e.g. if Tcl_WaitForEvent was called recursively),
-	re-run it in a custom run loop mode containing only the source for the
-	notifier thread, otherwise wakeups from other sources added to the
-	common run loop modes might get lost; sync panic msg changes from
-	HEAD.
+	* generic/tclScan.c:	Typo in ACCEPT_NAN configuration.
 
-	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): on 64-bit Darwin,
-	pthread_cond_timedwait() appears to have a bug that causes it to wait
-	forever when passed an absolute time which has already been exceeded
-	by the system time; as a workaround, when given a very brief timeout,
-	just do a poll on that platform. [Bug 1457797]
+	* generic/tclStrToD.c:	[Bug 2819200]: Set floating point control
+	register on MIPS systems so that the gradual underflow expected by Tcl
+	is in effect.
 
-	* unix/tclUnixPort.h (Darwin): override potentially faulty configure
-	detection of termios availability in all cases, since termios is known
-	to be present on all Mac OS X releases since 10.0. [Bug 497147]
+2009-07-14  Andreas Kupries  <andreask@activestate.com>
 
-2006-08-18  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclBasic.c (DeleteInterpProc,TclArgumentBCEnter,
+	(TclArgumentBCRelease, TclArgumentGet):
+	* generic/tclCompile.c (EnterCmdWordIndex, TclCleanupByteCode,
+	(TclInitCompileEnv, TclCompileScript):
+	* generic/tclCompile.h (ExtCmdLoc):
+	* generic/tclExecute.c (TclExecuteByteCode):
+	* generic/tclInt.h (ExtIndex, CFWordBC):
+	* tests/info.test (info-39.0):
 
-	* unix/tcl.m4 (Darwin): add support for --enable-64bit on x86_64, for
-	universal builds including x86_64, for 64-bit CoreFoundation on
-	Leopard and for use of -mmacosx-version-min instead of
-	MACOSX_DEPLOYMENT_TARGET.
-	* unix/configure: autoconf-2.13
+	Backport of some changes made to the Tcl head, to handle literal
+	sharing better. The code here is much simpler (trimmed down) compared
+	to the head as the 8.5 branch is not bytecode compiling whole files,
+	and doesn't compile eval'd code either.
 
-	* generic/tcl.h:      add fixes for building on Leopard and support
-	* unix/tclUnixPort.h: for 64-bit CoreFoundation on Leopard.
+	Reworked the handling of literal command arguments in bytecode to be
+	saved (compiler) and used (execution) per command (see the
+	TCL_INVOKE_STK* instructions), and not per the whole bytecode.  This
+	removes the problems with location data caused by literal sharing in
+	proc bodies. Simplified the associated datastructures (ExtIndex is
+	gone, as is the function EnterCmdWordIndex).
 
-	* unix/tclUnixPort.h: on Darwin x86_64, disable use of vfork as it
-	causes execve to fail intermittently. (rdar://4685553)
+2009-07-01  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* macosx/README: updates for x86_64 support and Xcode 2.4.
+	* win/tclWinInt.h:   [Bug 2806622]: Handle the GetUserName API call
+	* win/tclWin32Dll.c: via the tclWinProcs indirection structure. This
+	* win/tclWinInit.c:  fixes a problem obtaining the username when the
+	USERNAME environment variable is unset.
 
-	* unix/tclUnixChan.c (TclUnixWaitForFile): with timeout < 0, if
-	select() returns early (e.g. due to a signal), call it again instead
-	of returning a timeout result. Fixes intermittent event-13.8 failures.
+2009-06-15  Don Porter  <dgp@users.sourceforge.net>
 
-2006-08-09  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclStringObj.c: sprintf() -> Tcl_ObjPrintf() conversion.
 
-	* generic/tclEncoding.c:	Replace buffer copy in for loop with
-	call to memcpy(). Thanks to afredd. [Patch 1530262]
+2009-06-13  Don Porter  <dgp@users.sourceforge.net>
 
-2006-08-03  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclCompile.c:	The value stashed in iPtr->compiledProcPtr
+	* generic/tclProc.c:	when compiling a proc survives too long.  We
+	* tests/execute.test:	only need it there long enough for the right
+	TclInitCompileEnv() call to re-stash it into envPtr->procPtr.  Once
+	that is done, the CompileEnv controls.  If we let the value of
+	iPtr->compiledProcPtr linger, though, then any other bytecode compile
+	operation that takes place will also have its CompileEnv initialized
+	with it, and that's not correct.  The value is meant to control the
+	compile of the proc body only, not other compile tasks that happen
+	along.  Thanks to Carlos Tasada for discovering and reporting the
+	problem.  [Bug 2802881].
 
-	* unix/tclUnixPipe.c (TclpCreateProcess): for USE_VFORK: ensure
-	standard channels are initialized before vfork() so that the child
-	doesn't potentially corrupt global state in the parent's address
-	space.
+2009-06-10  Don Porter  <dgp@users.sourceforge.net>
 
-2006-07-30  Kevin Kenny  <kennykb@acm.org>
+	* generic/tclStringObj.c:	Revised [format] to not overflow the
+	integer calculations computing the length of the %ll formats of
+	really big integers.  Also added protections so that [format]s that
+	would produce results overflowing the maximum string length of Tcl
+	values throw a normal Tcl error instead of a panic. [Bug 2801413]
 
-	* tests/clock.test: Allowed UTC as a synonym for GMT in two tests that
-	indirectly invoke 'strftime' with the result of 'gmtime' to fix a
-	bogus test failure on FreeBSD systems. [Bug 1513489]
+2006-06-09  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-07-30  Joe English  <jenglish@users.sourceforge.net>
+	* generic/tclGetDate.y: Fixed a thread safety bug in the generated
+	* library/clock.tcl:    Bison parser (needed a %pure-parser
+	* tests/clock.test:     declaration to avoid static variables).
+				Discovered that the %pure-parser declaration
+	                        allowed for returning the Bison error message
+	                        to the Tcl caller in the event of a syntax
+	                        error, so did so.
+	* generic/tclDate.c: bison 2.3
 
-	* doc/AppInit.3: Fix typo [Bug 1496886]
+2006-06-08  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-07-20  Daniel Steffen  <das@users.sourceforge.net>
+	* library/tzdata/Asia/Dhaka: New DST rule for Bangladesh.
+	(Olson's tzdata2009i.)
 
-	* macosx/tclMacOSXNotify.c (Tcl_InitNotifier, Tcl_WaitForEvent):
-	create notifier thread lazily upon first call to Tcl_WaitForEvent()
-	rather than in Tcl_InitNotifier(). Allows calling exeve() in processes
-	where the event loop has not yet been run (Darwin's execve() fails in
-	processes with more than one thread), in particular allows embedders
-	to call fork() followed by execve(), previously the pthread_atfork()
-	child handler's call to Tcl_InitNotifier() would immediately recreate
-	the notifier thread in the child after a fork.
+2009-06-02  Don Porter  <dgp@users.sourceforge.net>
 
-	* macosx/tclMacOSXNotify.c (Tcl_InitNotifier):	   add support for
-	* unix/tclUnixFCmd.c (DoRenameFile, CopyFileAtts): weakly importing
-	* unix/tclUnixInit.c (TclpSetInitialEncodings):	   symbols not
-	available on OSX 10.2 or 10.3, enables binaires built on later OSX
-	versions to run on earlier ones.
-	* macosx/README: document how to enable weak-linking; cleanup.
-	* unix/tclUnixPort.h: add support for weak-linking; conditionalize
-	AvailabilityMacros.h inclusion; only disable realpath on 10.2 or
-	earlier when threads are enabled.
-	* unix/tclLoadDyld.c (TclpLoadMemoryGetBuffer): change runtime Darwin
-	* unix/tclUnixInit.c (TclpInitPlatform):	release check to use
-						       global initialized once
-	* unix/tclUnixFCmd.c (DoRenameFile, TclpObjNormalizePath): add runtime
-	Darwin release check to determine if realpath is threadsafe.
-	* unix/configure.in: add check on Darwin for compiler support of weak
-	* unix/tcl.m4:	     import and for AvailabilityMacros.h header; move
-	Darwin specific checks & defines that are only relevant to the tcl
-	build out of tcl.m4; restrict framework option to Darwin; cleanup
-	quoting.
-	* unix/configure: autoconf-2.13
+	* generic/tclExecute.c:	Replace dynamically-initialized table with
+	a table of static constants in the lookup table for exponent operator
+	computations that fit in a 64 bit integer result.
 
-	* unix/tclLoadDyld.c (TclpLoadMemory):
-	* unix/tclUnixPipe.c (TclpCreateProcess): fix signed-with-unsigned
-	comparison and other warnings from gcc4 -Wextra.
+	* generic/tclExecute.c:	Corrected implementations and selection
+	logic of the INST_EXPON instruction to fix [Bug 2798543].
 
-2006-07-13  Andreas Kupries <andreask@activestate.com>
+2009-06-01  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixPort.h: Added the inclusion of <AvailabilityMacros.h>.
-	The missing header caused the upcoming #if conditions to wrongly
-	exclude realpath, causing file normalize to ignore symbolic links in
-	the path.
+	* tests/expr.test:	Added many tests demonstrating the broken
+	cases of [Bug 2798543].
 
-2006-07-11  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2009-05-30  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclAsync.c: Made Tcl_AsyncDelete() more tolerant when called
-	after all thread TSD has been garbage-collected.
+	* library/tzdata/Africa/Cairo:
+	* library/tzdata/Asia/Amman: Olson's tzdata2009h.
 
-2006-07-10  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-05-29  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclIO.c (Tcl_CreateChannel): allow Tcl std channel
-	inheritance to be #defined out (default remains in).
+	* library/platform/platform.tcl: Fixed handling of cpu ia64,
+	* library/platform/pkgIndex.tcl: taking ia64_32 into account
+	* unix/Makefile.in: now. Bumped version to 1.0.5. Updated the
+	* win/Makefile.in: installation commands.
 
-2006-06-15  Don Porter  <dgp@users.sourceforge.net>
+2009-05-07  Miguel Sofer  <msofer@users.sf.net>
 
-	* changes:		changes to start prep for an 8.4.14 release.
+	* generic/tclObj.c (Tcl_GetCommandFromObj): fix for bug [2785893],
+	insure that a command in a deleted namespace cannot be found
+	through a cached name.
 
-2006-06-14  Daniel Steffen  <das@users.sourceforge.net>
+2009-05-06  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/tclUnixPort.h (Darwin): support for MAC_OS_X_VERSION_MAX_ALLOWED
-	define from AvailabilityMacros.h: override configure detection and only
-	use API available in the indicated OS version or earlier.
+	* generic/tclCmdMZ.c:   Improve overflow error message from
+	[string repeat].  [Bug 2582327]
 
-2006-06-14  Pat Thoyts  <patthoyts@users.sourceforge.net>
+2009-04-28  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/regerror.c:	Enable building Tcl with Microsoft's latest
-	* generic/tcl.h:	compiler offering (VS2005). We have to handle
-	* generic/tclDate.c:	a number of oddities as they have deprecated
-	* tests/env.test:	most of the standard C library and now
-	* win/makefile.vc:	generate manifest files to be linked into the
-	* win/nmakehlp.c:	binaries. [Bug 1424909]
-	* win/rules.vc:
-	* win/tclWinTime.c:
+	* unix/tcl.m4, unix/configure (SC_CONFIG_CFLAGS): harden the check
+	to add _r to CC on AIX with threads.
 
-2006-06-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2009-04-27  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	* unix/tclLoadDl.c (TclpDlopen): Workaround for a compiler bug in Sun
-	Forte 6. [Bug 1503729]
+	* generic/tclInt.h:   Backport fix for [Bug 1028264]: WSACleanup() too early.
+	* generic/tclEvent.c: The fix introduces "late exit handlers"
+	* win/tclWinSock.c:   for similar late process-wide cleanups.
 
-2006-06-06  Don Porter  <dgp@users.sourceforge.net>
+2009-04-27  Alexandre Ferrieux  <ferrieux@users.sourceforge.net>
 
-	* doc/GetStdChan.3:	Added recommendation that each call to
-	Tcl_SetStdChannel() be accompanied by a call to Tcl_RegisterChannel().
+	* win/tclWinSock.c: Backport fix for [Bug 2446662]: resync Win
+	behavior on RST with that of unix (EOF).
 
-2006-05-31  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-04-27  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclNamesp.c (NamespaceInscopeCmd): revert [Bug 1400572]
-	fix of 2006-01-09 for [namespace inscope] as it seems to mess with
-	itcl scope decoding. Leaving namespace-29.6 test failure until final
-	cause it determined.
+	* doc/concat.n (EXAMPLES): [Bug 2780680]: Rewrote so that the spacing
+	of result messages is correct. (The exact way they were wrong was
+	different when rendered through groff or as HTML, but it was still
+	wrong both ways.)
 
-2006-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+2009-04-24  Stuart Cassoff <stwo@users.sf.net>
 
-	* generic/tcl.h (Tcl_DecrRefCount): use if/else construct to allow
-	placement in unbraced outer if/else conditions. (jcw)
+	* unix/Makefile.in: [Patch 2769530]: Don't chmod/exec installManPage.
 
-2006-05-27  Daniel Steffen  <das@users.sourceforge.net>
+2009-04-15  Don Porter  <dgp@users.sourceforge.net>
 
-	* macosx/tclMacOSXNotify.c: implemented pthread_atfork() handler that
-	* unix/tcl.m4 (Darwin):	    recreates CoreFoundation state and notifier
-	thread in the child after a fork(). Note that pthread_atfork() is
-	available starting with Tiger only. Because vfork() is used by the core
-	on Darwin, [exec]/[open] are not affected by this fix, only extensions
-	or embedders that call fork() directly (such as TclX). However, this
-	only makes fork() safe from corefoundation tcl with --disable-threads;
-	as on all platforms, forked children may deadlock in threaded tcl due
-	to the potential for stale locked mutexes in the child. [Patch 923072]
-	* unix/configure: autoconf-2.59
+	*** 8.5.7 TAGGED FOR RELEASE ***
 
-2006-05-24  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+	* generic/tclStringObj.c:	AppendUnicodeToUnicodeRep failed
+	to set stringPtr->allocated to 0, leading to crashes.
 
-	* unix/tcl.m4 (SC_CONFIG_SYSTEM): Fixed quoting of command script to
-	awk; it was a rarely used branch, but it was wrong. [Bug 1494160]
+	* changes:	Update for 8.5.7 release.
 
-2006-05-13  Don Porter  <dgp@users.sourceforge.net>
+2009-04-14  Stuart Cassoff  <stwo@users.sourceforge.net>
 
-	* generic/tclFileName.c (TclDoGlob):	Disabled the partial
-	normalization done by the recursive glob routine, since changing the
-	precise string of the pathname broke [glob] on some Tcl_Filesystems.
-	[Bug 943995]
+	* unix/tcl.m4:	Removed -Wno-implicit-int from CFLAGS_WARNING.
 
-	* generic/tclProc.c (ProcCompileProc):	When a bump of the compile
-	epoch forces the re-compile of a proc body, take care not to
-	overwrite any Proc struct that may be referred to on the active
-	call stack. This fixes [Bug 1482718]. Note that the fix will not be
-	effective for code that calls the private routine TclProcCompileProc()
-	directly.
+2008-04-14  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-05-05  Don Porter  <dgp@users.sourceforge.net>
+	* library/tzdata/Asia/Karachi: Updated rules for Pakistan Summer
+				       Time (Olson's tzdata2009f)
 
-	* generic/tclMain.c (Tcl_Main):		Corrected flaw that required
-	* tests/main.test: (Tcl_Main-4.5):	processing of one interactive
-	command before passing control to the loop routine registered with
-	Tcl_SetMainLoop() [Bug 1481986]
+2009-04-10  Don Porter  <dgp@users.sourceforge.net>
 
-2006-05-04  Don Porter  <dgp@users.sourceforge.net>
+	* changes:	Update for 8.5.7 release.
 
-	* README:		Bump version number to 8.4.14
-	* generic/tcl.h:
+	* generic/tcl.h:	Bump to 8.5.7 for release.
+	* library/init.tcl:
 	* tools/tcl.wse.in:
 	* unix/configure.in:
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
+	* README:
 
-	* unix/configure:	autoconf-2.13
+	* unix/configure:	autoconf-2.59
 	* win/configure:
 
-	* generic/tclExecute.c (ExprSrandFunc):	Restore acceptance of wide
-	* tests/expr-old.test: integer values by srand() [Bug 1480509]
-
-2006-04-12  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclStringObj.c (UpdateStringOfString):  Fix bug detected
+	by compiler warning about undefined "dst".
 
-	*** 8.4.13 TAGGED FOR RELEASE ***
+	* tests/httpd:		Backport new tests for http 2.7.3.
+	* tests/http.tcl:
 
-	* changes:	updates for another RC.
+2009-04-10  Daniel Steffen  <das@users.sourceforge.net>
 
-2006-04-11  Don Porter  <dgp@users.sourceforge.net>
+	* unix/tclUnixChan.c:		TclUnixWaitForFile(): use FD_* macros
+	* macosx/tclMacOSXNotify.c:	to manipulate select masks (Cassoff).
+					[Freq 1960647] [Bug 3486554]
 
-	* generic/tclCmdMZ.c:	Stop some interference between enter traces
-	* tests/trace.test:	and enterstep traces. [Bug 1458266]
+	* unix/tclLoadDyld.c:		use RTLD_GLOBAL instead of RTLD_LOCAL.
+					[Bug 1961211]
 
-2006-04-10  Don Porter  <dgp@users.sourceforge.net>
+	* macosx/tclMacOSXNotify.c:	revise CoreFoundation notifier to allow
+					embedding into applications that
+					already have a CFRunLoop running and
+					want to run the tcl event loop via
+					Tcl_ServiceModeHook(TCL_SERVICE_ALL).
 
-	* changes:	updates for another RC.
+	* macosx/tclMacOSXNotify.c:	add CFRunLoop based Tcl_Sleep() and
+	* unix/tclUnixChan.c:		TclUnixWaitForFile() implementations
+	* unix/tclUnixEvent.c:		and disable select() based ones in
+					CoreFoundation builds.
 
-2006-04-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/tclUnixNotify.c:		simplify, sync with tclMacOSXNotify.c.
 
-	* generic/tclRegexp.c (FinalizeRegexp): full reset data to indicate
-	readiness for reinitialization.
-
-2006-04-06  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct):	It seems there
-	* tests/indexObj.test:	are extensions that rely on the prior behavior
-	* doc/GetIndex.3:	that the empty string cannot succeed as a
-	unique prefix matcher, so I'm restoring Donal Fellows's solution.
-	Added mention of this detail to the documentation. [Bug 1464039]
-
-2006-04-06  Daniel Steffen  <das@users.sourceforge.net>
-
-	* unix/tcl.m4: removed TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-	define on Darwin. [Bug 1457515]
-	* unix/configure: autoconf-2.13
+	* generic/tclInt.decls: 	add TclMacOSXNotifierAddRunLoopMode()
+	* generic/tclIntPlatDecls.h:	internal API, regen.
+	* generic/tclStubInit.c:
 
-2006-04-05  Don Porter  <dgp@users.sourceforge.net>
+	* unix/configure.in (Darwin):	use Darwin SUSv3 extensions if
+					available; remove /Network locations
+					from default tcl package search path
+					(NFS mounted locations and thus slow).
+	* unix/configure:		autoconf-2.59
+	* unix/tclConfig.h.in:		autoheader-2.59
 
-	* library/reg/pkgIndex.tcl:	Long overlooked bump to registry
-	* win/tclWinReg.c:		package version 1.1.4 (should have
-	been done for the Tcl 8.4.8 release!)
+	* macosx/tclMacOSXBundle.c:	on Mac OS X 10.4 and later, replace
+					deprecated NSModule API by dlfcn API.
 
-	* library/dde/pkgIndex.tcl:	Long overlooked bump to dde package
-	* win/tclWinDde.c:		version 1.2.4 (should have been done
-	for the Tcl 8.4.8 release!)
+2009-04-09  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-04-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* tools/tclZIC.tcl:	Always emit Unix-style line terminators.
+	* library/tzdata:	Olson's tzdata2009e.
 
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct): Allow empty
-	strings to be matched by the Tcl_GetIndexFromObj machinery, in the
-	same manner as any other key. [Bug 1464039]
+2009-04-09  Don Porter  <dgp@users.sourceforge.net>
 
-2006-04-04  Don Porter  <dgp@users.sourceforge.net>
+	* library/http/http.tcl:	Backport http 2.7.3 from HEAD for
+	* library/http/pkgIndex.tcl:	bundling with the Tcl 8.5.7 release.
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
-	* generic/tclPkg.c:	Revised Bug 1162286 fix from 2005-11-08 to be
-	* tests/pkg.test:	even more forgiving of package version
-	mismatch errors in [package ifneeded] commands, not even logging any
-	warning messages. This further reduces the
-	***POTENTIAL INCOMPATIBILITY*** noted for that change.
+2009-04-08  Andreas Kupries  <andreask@activestate.com>
 
-2006-04-03  Andreas Kupries <andreask@activestate.com>
+	* library/platform/platform.tcl: Extended the darwin sections to
+	* library/platform/pkgIndex.tcl: add a kernel version number to
+	* unix/Makefile.in: the identifier for anything from Leopard (10.5)
+	* win/Makefile.in: on up. Extended patterns for same. Extended cpu
+	* doc/platform.n: recognition for 64bit Tcl running on a 32bit
+	kernel on a 64bit processor (By Daniel Steffen). Bumped version to
+	1.0.4. Updated Makefiles.
 
-	* generic/tclIO.c (ReadChars): Added check, panic and commentary to a
-	piece of code which relies on BUFFER_PADDING to create enough space at
-	the beginning of each buffer for the insertion of partial multibyte
-	data at the beginning of a buffer. Commentary explains why this code
-	is OK, and the panic is as a precaution if someone twiddled the
-	BUFFER_PADDING into uselessness.
+2009-04-08  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclIO.c (ReadChars): Temporarily suppress the use of
-	TCL_ENCODING_END set when EOF was reached while the buffer we are
-	converting is not truly the last buffer in the queue. Together with
-	the Utf bug below it was possible to completely wreck the buffer data
-	structures, eventually crashing Tcl. [Bug 1462248]
+	* library/tcltest/tcltest.tcl:	Converted [eval]s (some unsafe!) to
+	* library/tcltest/pkgIndex.tcl:	{*} in tcltest package.  [Bug 2570363]
+	* unix/Makefile.in:	=> tcltest 2.3.1
+	* win/Makefile.in:
 
-	* generic/tclEncoding.c (UtfToUtfProc): Stop accessing memory beyond
-	the end of the input buffer when TCL_ENCODING_END is set and the last
-	bytes of the buffer start a multi-byte sequence. This bug contributed
-	to [Bug 1462248].
+2009-04-07  Don Porter  <dgp@users.sourceforge.net>
 
-2006-03-28  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclStringObj.c:	Completed backports of fixes for
+	[Bug 2494093] and [Bug 2553906].
 
-	* win/configure, win/tcl.m4: define MACHINE for gcc builds as well.
-	Needed by Tk for manifest generation.
+2009-03-30  Don Porter  <dgp@users.sourceforge.net>
 
-	* win/tclWinConsole.c: revert 2005-11-03 [Patch 1256872] change to add
-	win32 unicode console support as it broke the ability to modify the
-	encoding to the console.
+	* doc/Alloc.3:  Size argument is "unsigned int".  [Bug 2556263]
 
-2006-03-28  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclStringObj.c:       Added protections from invalid memory
+	* generic/tclTestObj.c:         accesses when we append (some part of)
+	* tests/stringObj.test:         a Tcl_Obj to itself.  Added the
+	appendself and appendself2 subcommands to the [teststringobj] testing
+	command and added tests to the test suite.  [Bug 2603158]
 
-	* unix/tclUnixFCmd.c (TclpObjNormalizePath): deal with *BSD/Darwin
-	realpath() converting relative paths into absolute paths. [Bug 1064247]
+2009-03-27  Don Porter  <dgp@users.sourceforge.net>
 
-2006-03-28  Vince Darley  <vincentdarley@sourceforge.net>
+	* generic/tclPathObj.c (TclPathPart):	TclPathPart() was computing
+	* tests/fileName.test:	the wrong results for both [file dirname] and
+	[file tail] on "path" arguments with the PATHFLAGS != 0 intrep and
+	with an empty string for the "joined-on" part.  [Bug 2710920]
 
-	* generic/tclIOUtil.c: fix to nativeFilesystemRecord comparisons
-	(lesser part of [Bug 1064247])
+2009-03-20  Don Porter  <dgp@users.sourceforge.net>
 
-2006-03-27  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* generic/tclStringObj.c:       Test stringObj-6.9 checks that
+	* tests/stringObj.test:         Tcl_AppendStringsToObj() no longer
+	crashes when operating on a pure unicode value.  [Bug 2597185]
 
-	* win/tclWinTest.c:	Fixes for [Bug 1456373] (mingw-gcc issue)
+	* generic/tclExecute.c (INST_CONCAT1):  Panic when appends overflow
+	the max length of a Tcl value.  [Bug 2669109]
 
-2006-03-23  Don Porter  <dgp@users.sourceforge.net>
+2009-03-18  Don Porter  <dgp@users.sourceforge.net>
 
-	* tests/expr.test:	Nan self-inquality test silenced. [Bug 761471]
+	* win/tclWinFile.c (TclpObjNormalizePath):      Corrected Tcl_Obj leak.
+	Thanks to Joe Mistachkin for detection and patch.  [Bug 2688184].
 
-2006-03-22  Don Porter  <dgp@users.sourceforge.net>
+2009-03-15  Donal K. Fellows  <dkf@users.sf.net>
 
-	* changes:	updates for another RC.
+	* generic/tclPosixStr.c (Tcl_SignalId,Tcl_SignalMsg): [Patch 1513655]:
+	Added support for SIGINFO, which is present on BSD platforms.
 
-2006-03-18  Vince Darley  <vincentdarley@sourceforge.net>
+2009-02-20  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclTest.c:
-	* win/tclWinFile.c:
-	* win/tclWinTest.c:
-	* tests/fCmd.test:
-	* tests/winFCmd.test:
-	* tests/tcltest.test: Backport of [file writable] fixes for Windows
-	from HEAD. [Bug 1193497]
+	* generic/tclPathObj.c: Fixed mistaken logic in TclFSGetPathType()
+	* tests/fileName.test:  that assumed (not "absolute" => "relative").
+	This is a false assumption on Windows, where "volumerelative" is
+	another possibility.  [Bug 2571597].
 
-2006-03-16  Andreas Kupries <andreask@activestate.com>
+2009-02-17  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* doc/open.n: Documented the changed behaviour of 'a'ppend mode.
+	* win/tcl.m4, win/configure: Check if cl groks _WIN64 already to
+	avoid CC manipulation that can screw up later configure checks.
+	Use 'd'ebug runtime in 64-bit builds.
 
-	* tests/io.test (io-43.1 io-44.[1234]): Rewritten to be
-	self-contained with regard to setup and cleanup. [Bug 681793]
+2009-02-05  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclIOUtil.c (TclGetOpenMode): Added the flag O_APPEND to the
-	list of POSIX modes used when opening a file for 'a'ppend. This
-	enables the proper automatic seek-to-end-on-write by the OS. See [Bug
-	680143] for longer discussion.
+	* generic/tclStringObj.c: Added overflow protections to the
+	AppendUtfToUtfRep routine to either avoid invalid arguments and
+	crashes, or to replace them with controlled panics.  [Bug 2561794]
 
-	* tests/ioCmd.test (iocmd-13.7.*): Extended the testsuite to check the
-	new handling of 'a'.
+2009-02-04  Don Porter  <dgp@users.sourceforge.net>
 
-2006-03-15  Andreas Kupries <andreask@activestate.com>
+	* generic/tclStringObj.c (SetUnicodeObj):       Corrected failure of
+	Tcl_SetUnicodeObj() to panic on a shared object.  [Bug 2561488].  Also
+	factored out common code to reduce duplication.
 
-	* tests/socket.test: Extended the timeout in socket-11.11 from 10 to
-	40 seconds to allow for really slow machines. Also extended
-	actual/expected results with value of variable 'done' to make it
-	clearer when a test fails due to a timeout. [Bug 792159]
+	* generic/tclCmdMZ.c:   Prevent crashes due to int overflow of the
+	length of the result of [string repeat].  [Bug 2561746]
 
-2006-03-14  Andreas Kupries <andreask@activestate.com>
+2009-01-29  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclPipe.c (TclCreatePipeline): Modified the processing of
-	pipebars to fail if the last bar is followed only by redirections.
-	[Bug 768659]
+	* generic/tclNamesp.c (Tcl_FindCommand): [Bug 2519474]: Ensure that
+	the path is not searched when the TCL_NAMESPACE_ONLY flag is given.
 
-2006-03-14  Andreas Kupries <andreask@activestate.com>
+2009-01-22  Kevin B. Kenny  <kennykb@acm.org>
 
-	* doc/fconfigure.n: Clarified that -translation is binary is reported
-	as lf when queried, because it is identical to lf, except for the
-	special additional behaviour when setting it. [Bug 666770]
+	* unix/tcl.m4: Corrected a typo ($(SHLIB_VERSION) should be
+	${SHLIB_VERSION}).
+	* unix/configure: Autoconf 2.59
 
-2006-03-14  Andreas Kupries <andreask@activestate.com>
+2009-01-21  Andreas Kupries  <andreask@activestate.com>
 
-	* win/tclWinPipe.c (Tcl_WaitPid): Backport of fix made to the head by
-	David Gravereaux in 2004. See ChangeLog entry 2004-01-19. [Bug 1381436]
+	* generic/tclIORChan.c (ReflectClose): Fix for [Bug 2458202].
+	Closing a channel may supply NULL for the 'interp'. Test for
+	finalization needs to be different, and one place has to pull the
+	interp out of the channel instead.
 
-	Fixed a thread-safety problem with the process list. The delayed cut
-	operation after the wait was going stale by being outside the list
-	lock. It now cuts within the lock and does a locked splice for when it
-	needs to instead. [Bug 859820]
+2009-01-19  Kevin B. Kenny  <kennykb@acm.org>
 
-2006-03-13  Don Porter  <dgp@users.sourceforge.net>
+	* unix/Makefile.in: Added a CONFIG_INSTALL_DIR parameter so that
+	* unix/tcl.m4:      distributors can control where tclConfig.sh goes.
+	Made the installation of 'ldAix' conditional
+	upon actually being on an AIX system.  Allowed for downstream
+	packagers to customize SHLIB_VERSION on BSD-derived systems.
+	Thanks to Stuart Cassoff for [Patch 907924].
+	* unix/configure: Autoconf 2.59
 
-	* generic/tclEncoding.c:	Report error when an escape encoding
-	is missing one of its sub-encodings [Bug 506653]
+2009-01-09  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/configure.in:	Revert change from 2005-07-26 that sometimes
-	* unix/configure:	added $prefix/share to the tcl_pkgPath.
-	See [Patch 1231015]. autoconf-2.13.
+	* generic/tclStringObj.c (STRING_SIZE):	Corrected failure to limit
+	memory allocation requests to the sizes that can be supported by
+	Tcl's memory allocation routines.  [Bug 2494093].
 
-2006-03-10  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2009-01-08  Don Porter  <dgp@users.sourceforge.net>
 
-	-- Summary of changes fixing [Bug 1437595] --
+	* generic/tclStringObj.c (STRING_UALLOC):  Added missing parens
+	required to get correct results out of things like
+	STRING_UALLOC(num + append).  [Bug 2494093].
 
-	* generic/tclEvent.c: Cosmetic touches and identation
-	* generic/tclInt.h: Added TclpFinalizeSockets() call.
+2009-01-06  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclIO.c: Calls TclpFinalizeSockets() as part of the
-	TclFinalizeIOSubsystem().
+	* generic/tclDictObj.c (DictIncrCmd): Corrected twiddling in internals
+	of dictionaries so that literals can't get destroyed.
 
-	* unix/tclUnixSock: Added no-op TclpFinalizeSockets().
+	* tests/expr.test, tests/string.test: Eliminate non-ASCII characters.
+	[Bugs 2006884, 2006879]
 
-	* mac/tclMacSock.c:
-	* win/tclWinPipe.c
-	* win/tclWinSock.c: Finalization of the sockets/pipes is now solely
-	done in TclpFinalizeSockets() and TclpFinalizePipes() and not over the
-	thread-exit handler, because the order of actions the Tcl generic core
-	will impose may result in cores/hangs if the thread exit handler tears
-	down corresponding subsystem(s) too early.
+2009-01-03  Kevin B. Kenny  <kennykb@acm.org>:
 
-2006-03-10  Vince Darley  <vincentdarley@sourceforge.net>
+	* library/clock.tcl (tcl::clock::add): Fixed error message formatting
+	in the case where [clock add] is presented with a bad switch.
+	* tests/clock.test (clock-65.1) Added a test case for the above
+	problem [Bug 2481670].
 
-	* win/tclWin32Dll.c:
-	* win/tclWinInt.h:
-	* win/tclWinFile.c: backported some fixes from HEAD relating to 'file
-	readable' and 'file writable', but main 'file writable' bug still
-	outstanding.
+2008-12-21  Don Porter  <dgp@users.sourceforge.net>
 
-2006-03-07  Don Porter  <dgp@users.sourceforge.net>
+	*** 8.5.6 TAGGED FOR RELEASE ***
 
-	* README:		Bump version number to 8.4.13 and update
-	* changes:		changes to start prep for an 8.4.13 release.
-	* generic/tcl.h:
+	* generic/tcl.h:	Bump to 8.5.6 for release.
+	* library/init.tcl:
 	* tools/tcl.wse.in:
-	* unix/configure{.in}:
+	* unix/configure.in:
 	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure{.in}:
-
-	* tests/parse.test:	Missing constraint
-
-2006-03-06  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclBasic.c:	Revised handling of TCL_EVAL_* flags to
-	* tests/parse.test:	simplify TclEvalObjvInternal and to correct
-	the auto-loading of alias targets (parse-8.12).	[Bug 1444291]
-
-2006-03-02  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* win/Makefile.in: convert _NATIVE paths to use / to avoid ".\"
-	path-as-escape issue.
-
-	* unix/tcl.m4, win/tcl.m4: []-quote ac_defun functions.
-
-2006-03-02  Pat Thoyts  <patthoyts@users.sourceforge.net>
-
-	* unix/tcl.m4:	  Fix for [Tk Bug 1334613] to sort out shared library
-	* unix/configure: issues on NetBSD. Regenerated configure script.
-
-2006-02-28  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclBasic.c:	Corrections to be sure that TCL_EVAL_GLOBAL
-	* tests/parse.test:	evaluations act the same as [uplevel #0]
-	* tests/trace.test:	evaluations, even when execution traces or
-	invocations of [::unknown] are present. [Bug 1439836]
-
-2006-02-16  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclIndexObj.c:	Disallow the "ambiguous" error message
-	* tests/indexObj.test:		when TCL_EXACT matching is requested.
-
-2006-02-15  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclIO.c:	Made several routines tolerant of
-	* generic/tclIOUtil.c:	interp == NULL arguments. [Bug 1380662]
-
-2006-02-09  Don Porter  <dgp@users.sourceforge.net>
-
-	* tests/main.test (Tcl_Main-6.7):	Improved robustness of command
-	auto-completion test. [Bug 1422736]
-
-2006-01-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* unix/tclUnixInit.c (TclpInitPlatform): Improved conditions on when
-	to update the FP rounding mode on FreeBSD, taken from FreeBSD port.
-
-2006-01-23  Miguel Sofer  <msofer@users.sf.net>
-
-	* generic/tclStringObj.c (Tcl_GetRange):
-	* tests/stringTest (string-12.21):fixed incorrect handling of internal
-	rep in Tcl_GetRange. Thanks to twylite and Peter Spjuth. [Bug 1410553]
+	* win/configure.in:
+	* README:
 
-2006-01-16  Reinhard Max  <max@suse.de>
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-	* generic/tclPipe.c (FileForRedirect): Prevent nameString from being
-	freed without having been initialized.
-	* tests/exec.test: Added a test for the above.
+	* changes:	Update for 8.5.6 release.
 
-2006-01-12  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* library/tclIndex: Removed reference to no-longer-extant procedure
+	'tclLdAout'.
+	* doc/library.n: Corrected mention of 'auto_exec' to 'auto_execok'.
+	[Patch 2114900] thanks to Stu Cassoff <stwo@users.sf.net>
+	Backport of 2008-11-26 commit from Kevin Kenny.
 
-	* generic/tclIOUtil.c (Tcl_FSGetInternalRep): fixed potential
-	overwriting of already freed memory which caused all kinds of (rare
-	but reproducible) coredumps all over the place.
+	* win/tclWinThrd.c (TclpThreadCreate): We need to initialize the
+	thread id variable to 0 as on 64 bit windows this is a pointer sized
+	field while windows only fills it with a 32 bit value. The result is
+	an inability to join the threads as the ids cannot be matched.
+	Backport of 2008-10-13 commit from Pat Thoyts.
 
-2006-01-11  Don Porter  <dgp@users.sourceforge.net>
+2008-12-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* tests/error.test (error-7.0):	Test the timing of write traces on
-	::errorInfo. [Bug 1397843]
+	* generic/tclExecute.c (TEBC:INST_DICT_GET): Make sure that the result
+	is empty when generating an error message. [Bug 2431847]
 
-2006-01-10  Daniel Steffen  <das@users.sourceforge.net>
+2008-12-12  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* unix/configure:    add caching, use AC_CACHE_CHECK instead of
-	* unix/configure.in: AC_CACHE_VAL where possible, consistent message
-	* unix/tcl.m4:	     quoting, sync relevant tclconfig/tcl.m4 and HEAD
-	changes and gratuitous formatting differences, fix SC_CONFIG_MANPAGES
-	with default argument, Darwin improvements to SC_LOAD_*CONFIG.
+	* library/clock.tcl (ProcessPosixTimeZone): Fix time change in Eastern
+	Europe (not 3:00 but 4:00 local time) [Bug 2207436]
 
-2006-01-09  Don Porter  <dgp@users.sourceforge.net>
+2008-12-11  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclNamesp.c (NamespaceInscopeCmd):	[namespace inscope]
-	* tests/namespace.test:	commands were not reported by [info level].
-	[Bug 1400572]
+	* generic/tclIO.c (SetChannelFromAny and related): Modified the
+	* tests/io.test: internal representation of the tclChannelType to
+	contain not only the ChannelState pointer, but also a reference to the
+	interpreter it was made in. Invalidate and recompute the internal
+	representation when it is used in a different interpreter (like
+	cmdName intrep's). Added testcase. [Bug 2407783]
 
-2005-12-20  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-12-11  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* generic/tclThreadAlloc.c (Tcl_GetMemoryInfo): Format values as longs
-	and not ints, so they are less likely to wrap on 64-bit machines.
+	* library/clock.tcl (ProcessPosixTimeZone): Fallback to European time
+	zone DST rules, when the timezone is between 0 and -12. [Bug 2207436]
+	* tests/clock.test (clock-52.[23]): Test cases.
 
-2005-12-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-12-10  Kevin B. Kenny  <kennykb@acm.org>
 
-	* doc/Tcl.n: Clarify what is going on in variable substitution
-	following thread on comp.lang.tcl.
+	* library/tzdata/*: Update from Olson's tzdata2008i.
 
-2005-12-14  Daniel Steffen  <das@users.sourceforge.net>
+2008-12-04  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclIOUtil.c: workaround gcc warning "comparison is always
-	* generic/tclTest.c:   false due to limited range of data type".
+	* generic/tclPathObj.c (Tcl_FSGetNormalizedPath):	Added another
+	flag value TCLPATH_NEEDNORM to mark those intreps which need more
+	complete normalization attention for correct results. [Bug 2385549]
 
-	* unix/configure.in: run check for fts API on all platforms, since
-	Linux glibc2 and *BSDs also have this and using fts is more efficient
-	than recursive opendir/readdir (sync with HEAD).
-	* unix/configure: regen.
+2008-12-03  Don Porter  <dgp@users.sourceforge.net>
 
-2005-12-12  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclFileName.c (DoGlob): One of the Tcl_FSMatchInDirectory
+	calls did not have its return code checked. This caused error messages
+	returned by some Tcl_Filesystem drivers to be swallowed.
 
-	* unix/tcl.m4, unix/configure: Fix sh quoting error reported in
-	bash-3.1+ [Bug 1377619] (schafer)
+2008-12-02  Andreas Kupries  <andreask@activestate.com>
 
-2005-12-12  Reinhard Max  <max@suse.de>
+	* generic/tclIO.c (TclFinalizeIOSubsystem): Replaced Alexandre
+	Ferrieux's first patch for [Bug 2270477] with a gentler version, also
+	supplied by him.
 
-	* generic/tclExecute.c (ExprAbsFunc): fixed the abs(MIN_INT) case so
-	that it doesn't break on compilers that don't assume integers to wrap
-	around (e.g. gcc-4.1.0).
+2008-12-01  Don Porter	<dgp@users.sourceforge.net>
 
-2005-12-09  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+	* generic/tclParse.c:	Backport fix for [Bug 2251175].
 
-	* tests/lsearch.test (lsearch-10.8..10): If the -start is off the end,
-	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): searching should find
-	nothing at all. [Bug 1374778]
+2008-11-30  Kevin B. Kenny  <kennykb@acm.org>
 
-2005-12-05  Daniel Steffen  <das@users.sourceforge.net>
+	* library/clock.tcl (format, ParseClockScanFormat): Added a [string
+	map] to get rid of namespace delimiters before caching a scan or
+	format procedure. [Bug 2362156]
+	* tests/clock.test (clock-64.[12]): Added test cases for the bug that
+	was tickled by a namespace delimiter inside a format string.
 
-	*** 8.4.12 TAGGED FOR RELEASE ***
+2008-11-25  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tclUnixPort.h (Darwin): fix incorrect __DARWIN_UNIX03 configure
-	overrides that were originally copied from Darwin CVS (rdar://3693001).
+	* generic/tclIO.c (TclFinalizeIOSubsystem): Applied Alexandre
+	Ferrieux's patch for [Bug 2270477] to prevent infinite looping during
+	finalization of channels not bound to interpreters.
 
-2005-12-05  Don Porter  <dgp@users.sourceforge.net>
+2008-08-23  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/configure.in:	Revised fix for [Bug 1034337] from Daniel
-	* unix/tclUnixFCmd.c:	Steffen. Uses fts_*() routines.
-	* unix/configure:	autoconf-2.13
-	* changes:		Update changes for 8.4.12 release
+	* generic/tclIO.c: Backport of fix for [Bug 2333466].
 
-2005-12-04  Daniel Steffen  <das@users.sourceforge.net>
+2008-11-18  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* README: refer to macosx/README instead of mac/README.
-	* mac/README: add note that mac classic port is no longer supported.
+	* generic/tcl.decls:	Fix signature and implementation of
+	* generic/tclDecls.h:	Tcl_HashStats, such that it conforms
+	* generic/tclHash.c:	to the documentation. [Bug 2308236]
+	* doc/Hash.3:
 
-2005-12-03  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-11-13  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* README: correct 2 urls
+	* generic/tclInt.h:	Rename static function FSUnloadTempFile to
+	* generic/tclIOUtil.c:	TclFSUnloadTempFile, needed in tclLoad.c
 
-2005-12-01  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclLoad.c:	Fixed [Bug 2269431]: load of shared
+	                        objects leaves temporary files on windows
 
-	* changes:		Update changes for 8.4.12 release
+2008-11-10  Andreas Kupries  <andreask@activestate.com>
 
-2005-12-01  Daniel Steffen  <das@users.sourceforge.net>
+	* doc/platform_shell.n: Fixed [Bug 2255235], reported by Ulrich
+	* library/platform/pkgIndex.tcl: Ring <uring@users.sourceforge.net>.
+	* library/platform/shell.tcl: Updated the LOCATE command in the
+	* library/tm.tcl: package 'platform::shell' to handle the new form
+	* unix/Makefile.in: of 'provide' commands generated by tm.tcl. Bumped
+	* win/Makefile.in: package to version 1.1.4. Added cross-references
+	to the relevant parts of the code to avoid future desynchronization.
 
-	* unix/tcl.m4 (Darwin): fixed error when MACOSX_DEPLOYMENT_TARGET unset
-	* unix/configure: regen.
+2008-11-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2005-11-29  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclPort.h: remove the ../win/ header dir as the build system
+	already has it, and it confuses builds when used with private headers
+	installed.
 
-	* win/tcl.m4:	   Add build support for Windows-x64 builds.
-	* win/configure:   --enable-64bit now accepts =amd64|ia64 for
-	* win/Makefile.in: Windows 64-bit build variants (default: amd64)
-	* win/makefile.vc: [Bug 1369597]
+2008-10-24  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2005-11-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* library/http/http.tcl: Backported a fix for reading HTTP-like
+	protocols that used to work and were broken with http 2.7. Now http
+	2.7.2
 
-	* generic/tclObj.c (Tcl_GetWideIntFromObj): Add more efficient
-	conversion to wides from normal ints. [Bug 1310081]
+2008-10-23  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Allow [lsearch -regexp] to
-	process REs that contain backreferences. This expensive mode of
-	operation is only used if the RE would otherwise cause a compilation
-	failure. [Bug 1366683]
+	* generic/tcl.h:	Bump version number to 8.5.6b1 to distinguish
+	* library/init.tcl:	CVS development snapshots from the 8.5.5 and
+	* unix/configure.in:	8.5.6 releases.
+	* unix/tcl.spec:
+	* win/configure.in:
+	* tools/tcl.wse.in:
+	* README
 
-2005-11-28  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* unix/configure:	autoconf (2.59)
+	* win/configure:
 
-	* win/tclWinSock.c (CreateSocket): Applied [Patch 1353853] to prevent
-	reads of uninitialized variables during cleanup.
+2008-10-19  Don Porter	<dgp@users.sourceforge.net>
 
-2005-11-27  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclProc.c:	Reset -level and -code values to defaults
+	after they are used. [Bug 2152286]
 
-	* unix/tcl.m4 (Darwin): add 64bit support, check for Tiger copyfile(),
-	add CFLAGS to SHLIB_LD to support passing -isysroot in env(CFLAGS) to
-	configure (flag can't be present twice, so can't be in both CFLAGS and
-	LDFLAGS during configure), don't use -prebind when deploying on 10.4,
-	define TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING (rdar://3171542).
-	(SC_ENABLE_LANGINFO, SC_TIME_HANDLER): add/fix caching, fix obsolete
-	autoconf macros. Sync with tk/unix/tcl.m4, sync whitespace with HEAD.
+2008-10-16  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/configure.in: fix obsolete autoconf macros, sync gratuitous
-	formatting/ordering differences with tk/unix/configure.in.
+	* library/init.tcl:	Revised [unknown] so that it carefully
+	preserves the state of the ::errorInfo and ::errorCode variables at
+	the start of auto-loading and restores that state before the
+	autoloaded command is evaluated. [Bug 2140628]
 
-	* unix/Makefile.in: add CFLAGS to tclsh/tcltest link to make
-	executable linking the same as during configure (needed to avoid
-	loosing any linker relevant flags in CFLAGS, in particular flags that
-	can't be in LDFLAGS). Avoid concurrent linking of tclsh and compiling
-	of tclTestInit.o or xtTestInit.o during parallel make.
-	(checkstubs, checkdoc, checkexports): dependency and Darwin fixes
+2008-10-10  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tclLoadDyld.c (TclpDlopen): [Bug 1204237] use
-	NSADDIMAGE_OPTION_WITH_SEARCHING on second NSAddImage only.
-	(TclGuessPackageName): should not be MODULE_SCOPE.
-	(TclpLoadMemory): ppc64 and endian (i386) fixes, add support for
-	loading universal (fat) bundles from memory.
+	*** 8.5.5 TAGGED FOR RELEASE ***
 
-	* unix/tclUnixPort.h:
-	* unix/tclUnixFCmd.c: add support for new Tiger copyfile() API to
-	enable copying of xattrs & ACLs by [file copy].
+	* generic/tcl.h:	Bump to 8.5.5 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* generic/tcl.h: add Darwin specifc configure overrides for TCL_WIDE
-	defines to support fat compiles of ppc and ppc64 at the same time,
-	(replaces Darwin CVS fix by emoy, rdar://3693001).
-	add/correct location of version numbers in macosx files.
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-	* generic/tclInt.h: clarify fat compile comment.
+	* changes:	Update for 8.5.5 release.
 
-	* unix/tclUnixPort.h: add Darwin specifc configure overrides to
-	support fat compiles, where configure runs only once for multiple
-	architectures (replaces Darwin CVS fix by emoy, rdar://3693001).
+2008-10-08  Don Porter	<dgp@users.sourceforge.net>
 
-	* macosx/tclMacOSXBundle.c:
-	* macosx/tclMacOSXNotify.c:
-	* unix/tclUnixNotfy.c: fix #include order to support compile time
-	* unix/tclUnixPort.h:  override of HAVE_COREFOUNDATION in
-	tclUnixPort.h when building for ppc64
+	* generic/tclTrace.c:   Corrected handling of errors returned by
+	variable traces so that the errorInfo value contains the original
+	error message. [Bug 2151707]
 
-	* macosx/Tcl.pbproj/default.pbxuser (new file):
-	* macosx/Tcl.pbproj/jingham.pbxuser:
-	* macosx/Tcl.pbproj/project.pbxproj: sync with HEAD.
+	* generic/tclVar.c:     Revised implementation of TclObjVarErrMsg so
+	that error message construction does not disturb an existing
+	iPtr->errorInfo that may be in progress.
 
-	* macosx/README: clarification/cleanup, sync with HEAD, document
-	universal (fat) builds via CFLAGS (i.e. all of ppc ppc64 i386 at once).
+2008-10-06  Jan Nijtmans  <nijtmans@users.sf.net>
 
-	* macosx/Makefile: add support for reusing configure cache, build
-	target fixes, remove GENERIC_FLAGS override now handled by tcl.m4.
+	* tclWinTest.c: Fix compiler warning when compiling this file with
+	mingw gcc:
+	    tclWinTest.c:706: warning: dereferencing type-punned pointer will
+	    break strict-aliasing rules
+	* generic/tclLoad.c: Make sure that any library which doesn't have an
+	unloadproc is only really unloaded when no library code is executed
+	yet. [Bug 2059262]
 
-	* generic/tclIOUtil.c:
-	* generic/tclRegexp.c:
-	* generic/tclVar.c: declare globals used only in own file as static
-	(sync with HEAD).
+2008-10-06  Joe Mistachkin  <joe@mistachkin.com>
 
-	* generic/rege_dfa.c (getvacant):
-	* generic/regexec.c (cfind):
-	* generic/tclCompExpr.c (CompileSubExpr):
-	* unix/tclUnixChan.c (TclUnixWaitForFile): initialise variables to
-	silence gcc 4 warnings.
+	* tools/man2tcl.c: Added missing line from patch by Harald Oehlmann.
+	[Bug 1934200]
 
-	* generic/regguts.h: only #define NDEBUG if not already #defined.
+2008-10-05  Kevin B. Kenny  <kennykb@acm.org>
 
-	* macosx/tclMacOSXNotify.c: sync whitespace & comments with HEAD
+	* libtommath/bn_mp_sqrt.c (bn_mp_sqrt): Handle the case where a
+	* tests/expr.test (expr-47.13):         number's square root is
+	between n<<DIGIT_BIT and n<<DIGIT_BIT+1. [Bug 2143288]
+	Thanks to Malcolm Boffey (malcolm.boffey@virgin.net) for the patch.
 
-	* unix/configure: regen.
+2008-10-02  Joe Mistachkin  <joe@mistachkin.com>
 
-2005-11-20  Joe English  <jenglish@users.sourceforge.net>
+	* tools/man2help2.tcl: Integrated patches from Harald Oehlmann.
+	* tools/man2tcl.c: [Bug 1934200, 1934272]
 
-	* generic/tclStubLib.c: Don't set tclStubsPtr to 0 when
-	Tcl_PkgRequireEx() fails [Fix for [Bug 1091431] "Tcl_InitStubs failure
-	crashes wish"]
+2008-09-27  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-2005-11-18  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclCmdIL.c (Tcl_LrepeatObjCmd): Improve the handling of the
+	case where the combination of number of elements and repeat count
+	causes the resulting list to be too large. [Bug 2130992]
 
-	* tests/trace.test (trace-34.5): [Bug 1047286], added a second test
-	illustrating the role of "ns in callStack" in the ns's visibility
-	during deletion traces.
+2008-09-25  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclBasic.c (Tcl_DeleteCommandFromToken):
-	* generic/tclCmdMZ.c (TraceCommandProc):
-	* generic/tclInt.h (NS_KILLED):
-	* generic/tclNamesp.c (Tcl_DeleteNamespace
-	* tests/namespace.test (namespace-7.3-6):
-	* tests/trace.test (trace-20.13-16): fix [Bugs 1355942/1355342].
+	* doc/global.n:	Correct false claim about [info locals].
 
-2005-11-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-09-17  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclIO.c (TclFinalizeIOSubsystem): preserve statePtr until we
-	netrieve next statePtr from it.
+	* generic/tclInt.h:     Correct the TclGetLongFromObj,
+	TclGetIntFromObj, and TclGetIntForIndexM macros so that they
+	retrieve the internalRep.longValue field instead of casting the
+	internalRep.otherValuePtr field to type long.
 
-2005-11-18  Don Porter  <dgp@users.sourceforge.net>
+2008-09-17  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclPkg.c:	Revised Bug 1162286 fix from 2005-11-08 to be
-	* tests/pkg.test:	more forgiving of package version mismatch
-	errors in [package ifneeded] commands. This reduces the
-	***POTENTIAL INCOMPATIBILITY*** noted for that change.
+	* library/init.tcl: export min and max commands from the mathfunc
+	namespace [Bug 2116053]
 
-2005-11-18  Andreas Kupries <andreask@activestate.com>
+2008-09-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclIO.c (TclFinalizeIOSubsystem): Applied Pat Thoyts' patch
-	for [Bug 1359094]. This moves the retrieval of the next channel state
-	to the end of the loop, as the called closeproc may close other
-	channels, i.e., modify the list we are iterating, invalidating any
-	pointer retrieved earlier.
+	* generic/tclListObj.c (Tcl_ListObjGetElements): Make this list->dict
+	transformation - encountered when using [foreach] with dicts - not as
+	expensive as it was before. Spotted by Kieran Elby and reported on
+	tcl-core.
 
-2005-11-18  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+2008-09-07  Miguel Sofer  <msofer@users.sf.net>
 
-	* library/http/http.tcl (http::geturl): Improved syntactic validation
-	of URLs, and better error messages in some cases. [Bug 1358369]
+	* doc/namespace.n: fix [Bug 2098441]
 
-2005-11-16  Don Porter  <dgp@users.sourceforge.net>
+2008-08-28  Don Porter	<dgp@users.sourceforge.net>
 
-	* README:		Bump version number to 8.4.12
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure.in:
+	* generic/tcl.h:	Bump version number to 8.5.5b1 to distinguish
+	* library/init.tcl:	CVS development snapshots from the 8.5.4 and
+	* unix/configure.in:	8.5.5 releases.
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
+	* tools/tcl.wse.in:
+	* README
 
-	* unix/configure:	autoconf-2.13
+	* unix/configure:	autoconf (2.59)
 	* win/configure:
 
-2005-11-15  Don Porter  <dgp@users.sourceforge.net>
-
-	* changes:		Update changes for 8.4.12 release
-
-2005-11-15  Kevin B. Kenny  <kennykb@acm.org>
+2008-08-22  Don Porter  <dgp@users.sourceforge.net>
 
-	* tests/cmdAH.test: Backported the fix for [Bug 926016] because of
-	* win/tclWinFile.c: a repeated bug report in 8.4 [Bug 1353840].
-	Windows [file mtime] will now return seconds from the Posix epoch
-	correctly (except for FAT32 file systems after a DST change without a
-	reboot - for which there is no help). A side effect is that file times
-	will appear different in Tcl from the way they do in Windows Explorer
-	or a 'dir' listing, because the Microsoft tools get the DST state
-	wrong in the listings.
+	* generic/tclUtil.c (TclReToGlob):	Added missing set of the
+	*exactPtr value to really fix [Bug 2065115]. Also avoid possible
+	DString overflow.
+	* tests/regexpComp.test:	Correct duplicate test names.
 
-2005-11-09  Kevin B. Kenny  <kennykb@acm.org>
+2008-08-21  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclTimer.c: Changed [after] so that it behaves correctly
-	* tests/timer.test:   with negative arguments. [Bug 1350293]
+	* tests/regexp.test, tests/regexpComp.test: correct re2glob ***=
+	* generic/tclUtil.c (TclReToGlob):          translation from exact
+	to anywhere-in-string match. [Bug 2065115]
 
-2005-11-08  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-08-20  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/tclUnixFCmd.c (MAX_READDIR_UNLINK_THRESHOLD): reduce to 130
-	based on errors seen on OS X 10.3 with lots of links in a dir. [Bug
-	1034337 followup]
+	* generic/tclTest.c (TestconcatobjCmd):	fix use of internal-only
+						TclInvalidateStringRep macro.
+						[Bug 2057479]
 
-2005-11-08  Don Porter  <dgp@users.sourceforge.net>
+2008-08-17  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/expr.test:	Portable tests expr-46.13-18 [Bug 1341368]
+	* generic/tclTest.c (TestconcatobjCmd):
+	* generic/tclUtil.c (Tcl_ConcatObj):
+	* tests/util.test (util-4.7):
+	fix [Bug 1447328]; the original "fix" turned Tcl_ConcatObj() into
+	a hairy monster. This was exposed by [Bug 2055782]. Additionally,
+	Tcl_ConcatObj could corrupt its input under certain conditions!
 
-	* generic/tclPkg.c:	Corrected inconsistencies in the value returned
-	* tests/pkg.test:	by Tcl_PkgRequire(Ex) so that the returned
-	values will always agree with what is stored in the package database.
-	This way repeated calls to Tcl_PkgRequire(Ex) have the same results.
-	Thanks to Hemang Lavana. [Bug 1162286]
-	***POTENTIAL INCOMPATIBILITY***: Incompatible with those existing
-	packages that are accustomed to the [package] command forgiving
-	their bugs.
+	*** NASTY BUG FIXED ***
 
-	* tests/namespace.test (25.7,8):	Backport test of knownBug.
-
-2005-11-08  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* generic/tclCmdMZ.c (TclTraceVariableObjCmd, TraceVarProc): Applied
-	Miguel's fix for [Bug 1348775]. It is not quite as elegant as the one
-	applied to the HEAD, but it is easier to use it rather than fully
-	backporting.
-
-2005-11-07  Miguel Sofer <msofer@users.sf.net>
-
-	* tests/trace.test (trace-13.2-4): added tests to detect leak, see
-	[Bug 1348775].
-
-2005-11-04  Don Porter  <dgp@users.sourceforge.net>
-
-	* unix/tcl.m4:	Added code to enable [load] on LynxOS. Thanks to
-	heidibr@users.sf.net for the patch. [Bug 1163896]
+2008-08-14  Don Porter  <dgp@users.sourceforge.net>
 
-	* unix/configure:	autoconf-2.13.
+	*** 8.5.4 TAGGED FOR RELEASE ***
 
-2005-11-04  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* tests/fileName.test:  Revise new tests for portability to case
+	insensitive filesystems.
 
-	* win/tclWinPipe.c: Applied [Patch 1267871] by Matt Newman which
-	* win/tclWinPort.h: provides extended error code support.
-	* tests/exec.test:  Wrote some tests for this feature.
+2008-08-14  Daniel Steffen  <das@users.sourceforge.net>
 
-2005-11-04  Kevin Kenny  <kennykb@acm.org>
+	* generic/tclCompile.h:		Add support for debug logging of DTrace
+	* generic/tclBasic.c:		'proc', 'cmd' and 'inst' probes (does
+					_not_ require a platform with DTrace).
 
-	* generic/tclGetDate.y: Added abbreviations for the Korean timezone.
-	* generic/tclDate.c:	Regenerated.
+	* generic/tclCmdIL.c (TclInfoFrame):	Check fPtr->line before
+						dereferencing as line info may
+						not exists when TclInfoFrame()
+						is called from a DTrace probe.
 
-	* compat/strftime.c: Fixed a problem where the name of the time zone
-	was double-converted from system encoding to UTF-8. Thanks to the
-	anonymous submitter of [Bug 1317477] for the report and the patch.
+	* tests/msgcat.test:		Fix for ::tcl::mac::locale with
+					@modifier (HEAD backport 2008-06-01).
 
-2005-11-04  Miguel Sofer <msofer@users.sf.net>
+	* tests/fCmd.test (fCmd-6.23):	Made result matching robust when test
+					workdir and /tmp are not on same FS.
 
-	* generic/tclInt.h:
-	* generic/tclNamesp.c:
-	* generic/tclVar.c: fix for [Bugs 1338280/1337229]. Thanks Don.
+	* unix/Makefile.in:		Ensure Makefile shell is /bin/bash for
+	* unix/configure.in (SunOS):	DTrace-enabled build on Solaris.
+					(followup to 2008-06-12) [Bug 2016584]
 
-	* tests/trace.test: fix duplicate test numbers
+	* unix/tcl.m4 (SC_PATH_X):	Check for libX11.dylib in addition to
+					libX11.so et al.
 
-2005-11-03  Don Porter  <dgp@users.sourceforge.net>
+	* unix/configure: 		autoconf-2.59
 
-	* generic/tclUnixInit.c (TclpSetInitialEncodings):	Modified so
-	that multiple calls can continue to atttempt to properly set the
-	system encoding. Needed for Tclkit to properly support non-default
-	encodings. Thanks to Yaroslav Schekin. [Bug 1201171]
+2008-08-13  Don Porter  <dgp@users.sourceforge.net>
 
-2005-11-03  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* generic/tclFileName.c:        Fix for errors handling -types {}
+	* tests/fileName.test:          option to [glob]. [Bug 1750300]
+	Thanks to Matthias Kraft and George Peter Staplin.
 
-	* win/tclWin32Dll.c:   Backported Anton Kovalenko's [Patch 1256872]
-	* win/tclWinConsole.c: to give unicode console support on
-	* win/tclWinInt.h:     suitable systems (eg: NT/XP)
+2008-08-12  Don Porter  <dgp@users.sourceforge.net>
 
-2005-11-01  Don Porter  <dgp@users.sourceforge.net>
+	* changes:	Update for 8.5.4 release.
 
-	* generic/tclCmdMZ.c (TclCheckExecutionTraces):	Corrected mistaken
-	assumption that all command traces are set at the script level.
-	Report/fix from Jacques H. de Villiers. [Bug 1337941]
+2008-08-11  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* tests/expr-old.test (expr-32.52):	Use int(.) to restrict result
-	of left shift to the C long range.
+	* library/http/http.tcl: Remove 8.5 requirement.
+	* library/http/pkgIndex.tcl:
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/makefile.vc:
 
-2005-10-29  Mo DeJong  <mdejong@users.sourceforge.net>
+2008-08-11  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/expr.test: Fix problems in new round() tests that lead to
-	correct result only on 32 bit long systems. [Bug 1341368]
+	* library/tm.tcl: Added a 'package provide' command to the generated
+	ifneeded scripts of Tcl Modules, for early detection of conflicts
+	between the version specified through the file name and a 'provide'
+	command in the module implementation, if any. Note that this change
+	also now allows Tcl Modules to not provide a 'provide' command at all,
+	and declaring their version only through their filename.
 
-2005-10-29  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclProc.c (Tcl_ProcObjCmd): Fixed memory leak triggered
+	* tests/proc.test: by procbody::test::proc. See [Bug 2043636]. Added a
+	test case demonstrating the leak before the fix. Fixed a few spelling
+	errors in test descriptions as well.
 
-	* generic/tclCmdMZ.c (TraceVarProc): [Bug 1337229], partial fix.
-	Ensure that a second call with TCL_TRACE_DESTROYED does not lead to a
-	second call to Tcl_EventuallyFree(). It is still true that that second
-	call should not happen, so the bug is not completely fixed.
-	* tests/trace.test (test-18.3-4): added tests for [Bugs 1337229 and
-	1338280].
+2008-08-11  Don Porter  <dgp@users.sourceforge.net>
 
-2005-10-27  Mo DeJong  <mdejong@users.sourceforge.net>
+	* library/http/http.tcl:	Bump http version to 2.7.1 to account
+	* library/http/pkgIndex.tcl:	for [Bug 2046486] bug fix.  This
+	* unix/Makefile.in:		release of http now requires a
+	* win/Makefile.in:		dependency on Tcl 8.5 to be able to
+	* win/makefile.bc:		use the unsigned formats in the
+	* win/makefile.vc:		[binary scan] command.
 
-	* generic/tclExecute.c (ExprRoundFunc): Fix typo where number before
-	rounding is compared with smallest integer instead of number after
-	rounding. This fix does not change the results of any tests.
-	* tests/expr.test: Add round() tests for cases near the min and max
-	int values.
-	* tests/util.test: Remove pointless warning code about testobj command
+2008-08-11  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2005-10-23  Miguel Sofer <msofer@users.sf.net>
+	* library/http/http.tcl: crc field from zlib data should be treated as
+	unsigned for 64bit support [Bug 2046846]
 
-	* generic/tclBasic.c:
-	* generic/tclBinary.c:
-	* generic/tclCmdAH.c:
-	* generic/tclCmdIL.c:
-	* generic/tclCmdMZ.c:
-	* generic/tclExecute.c:
-	* generic/tclLink.c:
-	* generic/tclMain.c:
-	* generic/tclProc.c:
-	* generic/tclScan.c:
-	* generic/tclTest.c:
-	* generic/tclVar.c:
-	* mac/tclMacInit.c:
-	* unix/tclUnixInit.c:
-	* win/tclWinInit.c: Ensure that the core never calls TclPtrSetVar,
-	Tcl_SetVar2Ex, Tcl_ObjSetVar2 or Tcl_SetObjErrorCode with a 0-ref new
-	value. It is not possible to handle error returns correctly in that
-	case [Bug 1334947], one has the choice of leaking the object in some
-	cases, or else risk crashing in some others.
+2008-08-08  Don Porter  <dgp@users.sourceforge.net>
 
-2005-10-22  Miguel Sofer <msofer@users.sf.net>
+	* generic/tcl.h:	Bump to 8.5.4 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* generic/tclExecute.c (INST_CONCAT): disable the optimisation for
-	wide integers. [Bug 1251791]
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-2005-10-14  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* changes:	Update for 8.5.4 release.
 
-	* generic/tclIO.c (Tcl_ClearChannelHandlers): removed change dated
-	2005-10-04 below. Look into [Bug 1323992] for detailed discussion.
+2008-08-08  Kevin Kenny  <kennykb@acm.org>
 
-2005-10-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* library/tzdata/CET:
+	* library/tzdata/MET:
+	* library/tzdata/Africa/Casablanca:
+	* library/tzdata/America/Eirunepe:
+	* library/tzdata/America/Santarem:
+	* library/tzdata/America/Rio_Branco:
+	* library/tzdata/America/Argentina/San_Luis:
+	* library/tzdata/Asia/Karachi:
+	* library/tzdata/Europe/Belgrade:
+	* library/tzdata/Europe/Berlin:
+	* library/tzdata/Europe/Budapest:
+	* library/tzdata/Europe/Sofia:
+	* library/tzdata/Indian/Mauritius:  Olson's tzdata2008e.
 
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Stop [format] from seeing
-	the difference between ints and wides. [Bug 1284178]
+2008-08-06  Don Porter  <dgp@users.sourceforge.net>
 
-2005-10-13  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* generic/tclVar.c (TclLookupSimpleVar):  Retrieve the number of
+	locals in the localCache from the CallFrame and not from the Proc
+	which may have been mangled by a (broken?) recompile. Backport from
+	the HEAD.
 
-	* generic/tclIO.c (Tcl_ClearChannelHandlers): temporary
-	ifdef TCL_THREADS changes done to de-activate pending
-	event processing when channel is being closed/cutted.
+2008-08-04  Don Porter  <dgp@users.sourceforge.net>
 
-2005-10-10  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c:	Stopped faulty double-logging of errors to
+	* tests/execute.test:	stack trace when a compile epoch bump triggers
+	fallback to direct evaluation of commands in a compiled script.
+	[Bug 2037338]
 
-	* generic/tclInt.h: ensure MODULE_SCOPE decl
+2008-07-30  Don Porter  <dgp@users.sourceforge.net>
 
-2005-10-07  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclBasic.c:	Corrected the timing of when the flag
+	TCL_ALLOW_EXCEPTIONS is tested.
 
-	* unix/tclUnixFCmd.c (TraverseUnixTree): Adjust 2004-11-11 change to
-	* tests/fCmd.test (fCmd-20.2):		 account for NFS special
-	files with a readdir rewind threshold. [Bug 1034337]
+2008-07-29  Miguel Sofer  <msofer@users.sf.net>
 
-2005-10-05  Andreas Kupries <andreask@activestate.com>
+	* generic/tclExecute.c:  fix [Bug 2030670] that cause
+	TclStackRealloc to panic on rare corner cases. Thx ajpasadyn for
+	diagnose and patch.
 
-	* generic/tclPipe.c (TclCreatePipeline): Fixed [Bug 1109294]. Applied
-	the patch provided by David Gravereaux.
+2008-07-28  Andreas Kupries  <andreask@activestate.com>
 
-	* doc/CrtChannel.3: Fixed [Bug 1104682], by application of David
-	Welton's patch for it, and added a note about wideSeekProc.
+	* generic/tclBasic.c: Added missing ref count when creating an empty
+	string as path (TclEvalEx). In 8.4 the missing code caused panics in
+	the testsuite. It doesn't in 8.5. I am guessing that the code path
+	with the missing the incr-refcount is not invoked any longer. Because
+	the bug in itself is certainly the same.
 
-2005-10-05  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-07-25  Daniel Steffen  <das@users.sourceforge.net>
 
-	* tests/env.test (env-6.1):
-	* win/tclWinPort.h: define USE_PUTENV_FOR_UNSET 1
-	* generic/tclEnv.c (TclSetEnv, TclUnsetEnv): add
-	USE_PUTENV_FOR_UNSET to existing USE_PUTENV define to account for
-	various systems that have putenv(), but can't unset env vars with it.
-	Note difference between Windows and Linux for actually unsetting the
-	env var (use of '=').
-	Correct the resizing of the environ array. We assume that we are in
-	full ownership, but that's not correct. [Bug 979640]
+	* tests/info.test (info-37.0): Add !singleTestInterp constraint;
+	(info-22.8, info-23.0): switch to glob matching to avoid sensitivity
+	to tcltest.tcl line number changes, remove knownBug constraint, fix
+	expected result. [Bug 1605269]
 
-2005-10-04  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-07-25  Andreas Kupries  <andreask@activestate.com>
 
-	* win/tclWinSerial.c (SerialSetOptionProc): free argv [Bug 1067708]
+	* tests/info.test: Tests 38.* added, exactly testing the tracking of
+	location for uplevel scripts.
 
-	* tests/http.test:		Do not URI encode -._~ according to
-	* library/http/http.tcl (init): RFC3986. [Bug 1182373] (aho)
+	* generic/tclCompile.c (TclInitCompileEnv): Reorganized the
+	initialization of the #280 location information to match the flow in
+	TclEvalObjEx to get more absolute contexts.
 
-	* generic/tclIOUtil.c (TclFSNormalizeAbsolutePath): make static
-	* generic/tclEncoding.c (TclFindEncodings): make static
+	* generic/tclBasic.c (TclEvalObjEx): Moved the pure-list optimization
+	out of the eval-direct code path to be done always, i.e. even when a
+	compile is requested. This way we do not loose the association between
+	#280 location information and the list elements, if any.
 
-	* unix/tclLoadShl.c (TclpDlopen): use DYNAMIC_PATH on second
-	shl_load only. [Bug 1204237]
+2008-07-23  Andreas Kupries  <andreask@activestate.com>
 
-2005-10-04  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* tests/info.test: Reordered the tests to have monotonously
+	increasing numbers.
 
-	* generic/tclIO.c (Tcl_ClearChannelHandlers): now deletes any
-	outstanding timer for the channel. Also, prevents events still
-	in the event queue from triggering on the current channel.
+	* generic/tclBasic.c: Modified TclArgumentGet to reject pure lists
+	* generic/tclCmdIL.c: immediately, without search. Reworked setup
+	* generic/tclCompile.c: of eoFramePtr, doesn't need the line
+	* tests/info.test: information, more sensible to have everything on
+	line 1 when eval'ing a pure list. Updated the users of the line
+	information to special case this based on the frame type (i.e.
+	TCL_LOCATION_EVAL_LIST). Added a testcase demonstrating the new
+	behaviour.
 
-	* generic/tclTimer.c (Tcl_DeleteTimerHandler): bail out early
-	if passed NULL argument.
+2008-07-22  Andreas Kupries  <andreask@activestate.com>
 
-2005-09-30  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclBasic.c: Added missing function comments.
 
-	* generic/tclMain.c:	Separate encoding conversion of command line
-	arguments from list formatting. [Bug 1306162]
+	* generic/tclCompile.c: Made the new TclEnterCmdWordIndex
+	* generic/tclCompile.h: static, and ansified.
 
-2005-09-27  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclBasic.c: Reworked the handling of bytecode literals
+	* generic/tclCompile.c: for #280 to fix the abysmal performance
+	* generic/tclCompile.h: for deep recursion, replaced the linear
+	* generic/tclExecute.c: search through the whole stack with another
+	* generic/tclInt.h: hashtable and simplified the data structure used
+	by the compiler (array instead of hashtable). Incidentially this also
+	fixes the memory leak reported via [Bug 2024937].
 
-	* generic/tclBinary.c (FormatNumber): Factorize out copying of double
-	values to a helper to work around ugly broken compiler problems. [Bug
-	1116542]
+2008-07-21  Don Porter  <dgp@users.sourceforge.net>
 
-2005-09-15  Miguel Sofer <msofer@users.sf.net>
+	* tests/encoding.test:  Make failing tests pass again. [Bug 1972867]
 
-	* doc/ParseCmd.3: copy/paste fix [Bug 1292427]
+2008-07-21  Andreas Kupries <andreask@activestate.com>
 
-2005-09-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclBasic.c: Extended the existing TIP #280 system (info
+	* generic/tclCmdAH.c: frame), added the ability to track the
+	* generic/tclCompCmds.c: absolute location of literal procedure
+	* generic/tclCompile.c: arguments, and making this information
+	* generic/tclCompile.h: available to uplevel, eval, and
+	* generic/tclInterp.c: siblings. This allows proper tracking of
+	* generic/tclInt.h: absolute location through custom (Tcl-coded)
+	* generic/tclNamesp.c: control structures based on uplevel, etc.
+	* generic/tclProc.c:
 
-	* unix/tcl.m4 (SC_TCL_EARLY_FLAGS): Added extra hack to allow Tcl to
-	transparently open large files on RHEL 3. [Bug 1287638]
+2008-07-21  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* unix/configure:	autoconf-2.13
+	* generic/tclFCmd.c: Inodes on windows are unreliable [Bug 2015723]
 
-2005-09-07  Don Porter  <dgp@users.sourceforge.net>
+2008-07-20  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclUtf.c (Tcl_UniCharToUtf):	Corrected handling of negative
-	* tests/utf.test (utf-1.5):	Tcl_UniChar input value. Incorrect
-	handling was producing byte sequences outside of Tcl's legal internal
-	encoding. [Bug 1283976]
+	* generic/tclDictObj.c (SetDictFromAny): Make the list->dict
+	transformation a bit more efficient; modern dicts are ordered and so
+	we can round-trip through lists without needing the string rep at all.
+	* generic/tclListObj.c (SetListFromAny): Make the dict->list
+	transformation not lossy of internal representations and hence more
+	efficient. [Bug 2008248] (ajpasadyn) but using a more efficient patch.
 
-2005-08-29  Kevin Kenny  <kennykb@acm.org>
+2008-07-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclBasic.c (ExprMathFunc): Restored "round away from zero"
-	* tests/expr.test (expr-46.*):	     behaviour to the "round"
-	function. Added test cases for the behavior, including the awkward
-	case of a number whose fractional part is 1/2-1/2ulp. [Bug 1275043]
+	* doc/DictObj.3: Fix error in example. [Bug 2016740]
 
-2005-08-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-07-08  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclListObj.c (UpdateStringOfList): Stop uncontrolled and
-	unsafe crashes from happening when working with very large string
-	representations. [Bug 1267380]
+	* generic/tclGet.c:	Corrected out of date comments.
 
-2005-08-17  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-07-07  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclFCmd.c (TclFileMakeDirsCmd): fix to race condition in
-	file mkdir (backport from head 2005-06-13) [Bug 1217375]
+	* generic/tclCmdIL.c (InfoFrameCmd): Fixed unsafe idiom of setting the
+	interp result found by Don Porter.
 
-2005-08-16  Kevin Kenny <kennykb@acm.org>
+2008-07-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclEvent.c (Tcl_Finalize): Pushed Tcl_FinalizeLoad and
-	Tcl_ResetFilesystem down after Tcl_FinalizeThreadAlloc because
-	unloading DLLs can't happen while they still own TSD keys.
-	(This is a backport of changes made in the HEAD on 2005-08-10.)
+	* doc/regexp.n, doc/regsub.n: Correct examples. [Bug 1982642]
 
-2005-08-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-07-04  Joe English  <jenglish@users.sourceforge.net>
 
-	* unix/tclUnixInit.c (localeTable): Solaris uses a non-standard name
-	for the cp1251 charset. Thanks to Victor Wagner for reporting this.
-	[Bug 1252475]
+	* generic/tclEncoding.c(UtfToUtfProc): Avoid unwanted sign extension
+	when converting incomplete UTF-8 sequences. See [Bug 1908443] for
+	details.
 
-2005-08-05  Kevin Kenny  <kennykb@users.sourceforge.net>
+2008-07-03  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclExecute.c (TclExecuteByteCode): Fixed a corner case
-	* tests/expr.test (expr-38.1):		     where applying abs to
-	MIN_INT failed to promote the result to a wide integer. [Bug 1241572]
+	* generic/tclIORChan.c (InvokeTclMethod): Fixed the memory leak
+	reported in [Bug 1987821]. Thanks to Miguel for the rpeort and Don
+	Porter for tracking the cause down.
 
-2005-08-04  Don Porter  <dgp@users.sourceforge.net>
+2008-07-03  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclObj.c:	Simplified routines that manage the typeTable.
+	* library/package.tcl:  Removed [file readable] testing from
+	[tclPkgUnknown] and friends. We find out soon enough whether a file is
+	readable when we try to [source] it, and not testing before allows us
+	to workaround the bugs on some common filesystems where [file
+	readable] lies to us. [Patch 1969717]
 
-2005-08-03  Don Porter  <dgp@users.sourceforge.net>
+2008-06-29  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclCompExpr.c:	Untangled some dependencies in the
-	* generic/tclEvent.c:		order of finalization routines.
-	* generic/tclInt.h:		[Bug 1251399]
-	* generic/tclObj.c:
+	*** 8.5.3 TAGGED FOR RELEASE ***
 
-2005-07-30  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tcl.h:	Bump to 8.5.3 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* unix/configure, unix/tcl.m4: revert 2005-07-28 change.
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-	* unix/tclLoadDyld.c (TclpDlopen, TclpLoadMemory): workarounds for
-	bugs/changes in behaviour in Mac OS X 10.4 Tiger, sync formatting
-	changes from HEAD.
+	* doc/ObjectType.3:	Updated documentation of the Tcl_ObjType
+	struct to match expectations of Tcl 8.5 [Bug 1917650].
 
-2005-07-29  Donal K. Fellows  <dkf@users.sf.net>
+	* generic/tclPathObj.c:  Plug memory leak in [Bug 1999176] fix. Thanks
+	Rolf Ade for detecting.
 
-	* generic/tclCmdIL.c (InfoGlobalsCmd): Even in high-speed mode, still
-	have to take care with non-existant variables. [Bug 1247135]
+2008-06-28  Don Porter  <dgp@users.sourceforge.net>
 
-2005-07-28  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclPathObj.c:  Plug memory leak in [Bug 1972879] fix. Thanks
+	Rolf Ade for detecting and Dan Steffen for the fix [Bug 2004654].
 
-	* win/README: Update link to msys_mingw8.zip. Remove old Cygwin +
-	Mingw info, people should just build with the msys + mingw
-	configuration.
+2008-06-26  Andreas Kupries  <andreask@activestate.com>
 
-2005-07-28  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/Makefile.in: Followup to my change of 2008-06-25, make code
+	generated by the Makefile and put into the installd tm.tcl conditional
+	on interpreter safeness as well. Thanks to Daniel Steffen for
+	reminding me of that code.
 
-	* unix/configure, unix/tcl.m4: defined TCL_LOAD_FROM_MEMORY on Darwin
-	only for SHARED_BUILD
+2008-06-25  Don Porter  <dgp@users.sourceforge.net>
 
-2005-07-28  Donal K. Fellows  <dkf@users.sf.net>
+	* changes:	Update for 8.5.3 release.
 
-	* generic/tclPipe.c (TclCreatePipeline): Arrange for POSIX systems to
-	* unix/tclUnixPipe.c (TclpOpenFile):	 use the O_APPEND flag for
-	* tests/exec.test (exec-19.1):		 files opened in a pipeline
-	like ">>this".	Note that Windows cannot support such access; there is
-	no equivalent flag on the handle that can be set at the kernel-call
-	level. The test is unix-specific in every way. [Bug 1245953]
+2008-06-25  Andreas Kupries  <andreask@activestate.com>
 
-2005-07-26  Mo DeJong  <mdejong@users.sourceforge.net>
+	* library/tm.tcl:	Modified the handling of Tcl Modules and of the
+	* library/safe.tcl:	Safe Base to interact nicely with each other,
+	* library/init.tcl:	enabling requiring Tcl Modules in safe
+	* tests/safe.test:	interpreters. Fixes [Bug 1999119].
 
-	* unix/configure: Regen.
-	* unix/configure.in: Check for a $prefix/share directory and add it
-	the the package if found. This will check for Tcl packages in
-	/usr/local/share when Tcl is configured with the default dist install.
-	[Patch 1231015]
+2008-06-25  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2005-07-26  Don Porter  <dgp@users.sourceforge.net>
+	* win/rules.vc:    Backported fix for dde/registry versions and
+	* win/makefile.vc: the staticpkg build option
 
-	* doc/tclvars.n:	Improved $errorCode documentation. [RFE 776921]
+2008-06-24  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclBasic.c (Tcl_CallWhenDeleted):	Converted to use
-	per-thread counter, rather than a process global one that required
-	mutex protection. [RFE 1077194]
+	* generic/tclPathObj.c: Fixed some internals management in the "path"
+	Tcl_ObjType for the empty string value. Problem led to a crash in the
+	command [glob -dir {} a]. [Bug 1999176].
 
-	* generic/tclNamesp.c (TclTeardownNamespace):	Re-ordering so that
-	* tests/trace.test (trace-34.4):	command delete traces fire
-	while the command still exists. [Bug 1047286]
+2008-06-23  Don Porter  <dgp@users.sourceforge.net>
 
-2005-07-24  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclPathObj.c: Fixed bug in Tcl_GetTranslatedPath() when
+	operating on the "Special path" variant of the "path" Tcl_ObjType
+	intrep. A full normalization was getting done, in particular, coercing
+	relative paths to absolute, contrary to what the function of
+	producing the "translated path" is supposed to do. [Bug 1972879]
 
-	* unix/tcl.m4 (SC_PROG_TCLSH, SC_BUILD_TCLSH):
-	* win/tcl.m4 (SC_PROG_TCLSH, SC_BUILD_TCLSH):
-	Split confused search for tclsh on PATH and build and install
-	locations into two macros. SC_PROG_TCLSH searches just the PATH.
-	SC_BUILD_TCLSH determines the name of the tclsh executable in the Tcl
-	build directory. [Bug 1160114], [Patch 1244153]
+2008-06-19  Don Porter  <dgp@users.sourceforge.net>
 
-2005-07-22  Don Porter  <dgp@users.sourceforge.net>
+	* changes:	Update for 8.5.3 release.
 
-	* library/auto.tcl:	Updates to the Tcl script library to make
-	* library/history.tcl:	use of Tcl 8.4 feautures.  Thanks to
-	* library/init.tcl:	Patrick Fradin for prompting on this.
-	* library/package.tcl:	[Patch 1237755]
-	* library/safe.tcl:
-	* library/word.tcl:
+	* generic/tclInterp.c:	Fixed completely boneheaded mistake that
+	* tests/interp.test:	[interp bgerror $slave] and [$slave bgerror]
+	would always act like [interp bgerror {}]. [Bug 1999035]
 
-2005-07-07  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tests/chanio.test:	Corrected flawed tests revealed by a -debug 1
+	* tests/event.test:	-singleproc 1 test suite run.
+	* tests/io.test:
 
-	* unix/tcl.m4, unix/configure: Backported [Bug 1095909], removing
-	* unix/tclUnixPort.h:	       any use of readdir_r as it is not
-	* unix/tclUnixThrd.c:	       necessary and just confuses things.
+2008-06-19  Don Porter  <dgp@users.sourceforge.net>
 
-2005-07-05  Don Porter  <dgp@users.sourceforge.net>
+	* changes:	Updates for 8.5.3 release.
 
-	* generic/tclCmdAH.c:	 New "encoding" Tcl_ObjType (not registered)
-	* generic/tclEncoding.c: that permits longer lifetimes of the
-	* generic/tclInt.h:	 Tcl_Encoding values kept as intreps of
-	Tcl_Obj's.  Reduces the need for repeated reading of encoding
-	definition files from the filesystem. [Bug 1077262]
+2008-06-17  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclNamesp.c:	Allow for [namespace import] of a command
-	* tests/namespace.test: over a previous [namespace import] of itself
-	without throwing an error. [RFE 1230597]
+	* generic/tclClock.c (ClockConvertlocaltoutcObjCmd): Removed left
+	over debug output.
 
-2005-07-01  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2008-06-17  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tclUnixNotfy.c: protect against spurious wake-ups while waiting
-	on the condition variable when tearing down the notifier thread. [Bug
-	1222872]
+	* doc/tm.n: Followup to changelog entry 2008-03-18 regarding
+	::tcl::tm::Defaults. Updated the documentation to not only mention
+	the new (underscored) form of environment variable names, but make
+	it the encouraged form as well. See [Bug 1914604].
 
-2005-06-27  Don Porter  <dgp@users.sourceforge.net>
+2008-06-17  Kevin Kenny  <kennykb@acm.org>
 
-	*** 8.4.11 TAGGED FOR RELEASE ***
+	* generic/tclClock.c (ConvertLocalToUTC):
+	* tests/clock.test (clock-63.1): Fixed a bug where the
+	internal ConvertLocalToUTC command segfaulted if passed a
+	dictionary without the 'localSeconds' key.  To the best of
+	my knowledge, the bug was not observable in the [clock]
+	command itself.
 
-	* library/auto.tcl:	Reverted to Revision 1.12.2.3 (Tcl 8.4.9).
-	Restores the (buggy) behavior of [auto_reset] that fails to clear
-	away auto-loaded commands from non-global namespaces.  Fixing this
-	bug exposed an unknown number of buggy files out there (including at
-	least portions of the Tk script library) that cannot tolerate double
-	[source]-ing.  The burden of fixing these exposed bugs will not be
-	forced on package/extension/application authors until Tcl 8.5.
+2008-06-16  Andreas Kupries  <andreask@activestate.com>
 
-2005-06-24  Kevin Kenny  <kennykb@acm.org>
+	* generic/tclCmdIL.c (TclInfoFrame): Backport of fix made on the
+	* tests/info.test: head branch :: Moved the code looking up the
+	information for key 'proc' out of the TCL_LOCATION_BC branch to
+	after the switch, this is common to all frame types. Updated the
+	testsuite to match. This was exposed by the 2008-06-08 commit
+	(Miguel), switching uplevel from direct eval to compilation. Fixes
+	[Bug 1987851].
 
-	* generic/tclEvent.c (Tcl_Finalize):
-	* generic/tclInt.h:
-	* generic/tclPreserve.c (TclFinalizePreserve): Changed the
-	finalization logic so that Tcl_Preserve finalizes after exit
-	handlers run; a lot of code called from Tk's exit handlers
-	presumes tha Tcl_Preserve will still work even from an exit
-	handler.  Also, made the assertion check that no exit handlers
-	are created in Tcl_Finalize conditional on TCL_MEM_DEBUG to
-	avoid spurious panics in the "stable" release.
+2008-06-12  Daniel Steffen  <das@users.sourceforge.net>
 
-2005-06-24  Don Porter  <dgp@users.sourceforge.net>
+	* unix/Makefile.in:		add complete deps on tclDTrace.h.
 
-	* library/auto.tcl:	Make file safe to re-[source] without
-	destroying registered auto_mkindex_parser hooks.
+	* unix/Makefile.in:		clean generated tclDTrace.h file.
+	* unix/configure.in (SunOS): 	fix static DTrace-enabled build.
 
-2005-06-23  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tcl.m4 (SunOS-5.11): fix 64bit amd64 support with gcc & Sun cc.
+	* unix/configure: autoconf-2.59
 
-	* tools/tcltk-man2html.tcl: fixed useversion glob pattern to accept
-	multi-digit patchlevels.
+	* macosx/Tcl.xcodeproj/project.pbxproj:	add debug configs with gcov,
+	and with corefoundation disabled; updates and cleanup for Xcode 3.1 and
+	for Leopard.
+	* macosx/Tcl.xcode/project.pbxproj:	sync Tcl.xcodeproj changes.
+	* macosx/README:			document new build configs.
 
-2005-06-23  Kevin Kenny  <kennykb@acm.org>
+2008-05-26  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* win/tclWinChan.c: More rewriting of __asm__ blocks that
-	* win/tclWinFCmd.c: implement SEH in GCC, because mingw's
-	gcc 3.4.2 is not as forgiving of violations committed by
-	the old code and caused panics. [Bug 1225957]
+	* tests/io.test (io-53.9): need to close chan before removing file.
 
-2005-06-23  Daniel Steffen  <das@users.sourceforge.net>
+2008-05-23  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/Makefile.in (install-private-headers): rewrite tclPort.h when
-	installing private headers to remove ../unix relative #include path to
-	tclUnixPort.h (which is incorrect at the installed location).
+	* win/tclWinChan.c (FileWideSeekProc): Accepted a patch by
+	Alexandre Ferrieux <ferrieux@users.sourceforge.net> to fix the
+	[Bug 1965787]. 'tell' now works for locations > 2 GB as well
+	instead of going negative.
 
-2005-06-22  Kevin Kenny <kennykb@acm.org>
+	* generic/tclIO.c (Tcl_SetChannelBufferSize): Accepted a patch by
+	* tests/io.test: Alexandre Ferrieux <ferrieux@users.sourceforge.net>
+	* tests/chanio.test: to fix the [Bug 1969953]. Buffersize outside
+	of the supported range are now clipped to nearest boundary instead
+	of ignored.
 
-	* generic/tclInt.h:			    Changed the finalization
-	* generic/tclEvent.c (Tcl_Finalize):	    logic to defer the
-	* generic/tclIO.c (TclFinalizeIOSubsystem): shutdown of the pipe
-	* unix/tclUnixPipe.c (TclFinalizePipes):    management until after
-	* win/tclWinPipe.c (TclFinalizePipes):	    all channels have been
-	    closed, in order to avoid a situation where the Windows
-	    PipeCloseProc2 would re-establish the exit handler after exit
-	    handlers had already run, corrupting the heap. [Bug 1225727]
-	Corrected a read of uninitialized memory in PipeCloseProc2, which (at
-	least on certain configurations) caused a great number of tests to
-	either fail or hang. [Bug 1225044]
+2008-05-22  Don Porter  <dgp@users.sourceforge.net>
 
-2005-06-22  Andreas Kupries <andreask@activestate.com>
+	* generic/tclNamesp.c (Tcl_LogCommandInfo):	Restored ability to
+	handle the argument value length = -1.  Thanks to Chris Darroch for
+	discovering the bug and providing the fix.  [Bug 1968245].
 
-	* generic/tclInt.h: Followup to change made on 2005-06-18 by Daniel
-	Steffen. There are compilers (*) who error out on the redefinition of
-	WORDS_BIGENDIAN. We have to undef the previous definition (on the
-	command line) first to make this acceptable. (*): AIX native.
+2008-05-21  Don Porter  <dgp@users.sourceforge.net>
 
-2005-06-22  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclParse.c (ParseComment):    The new TclParseAllWhiteSpace
+	* tests/parse.test (parse-15.60):       routine has no mechanism to
+	return the "incomplete" status of "\\\n" so calling this routine
+	anywhere that can be reached within a Tcl_ParseCommand call is a
+	mistake. In particular, ParseComment must not use it. [Bug 1968882]
 
-	* win/tclWinFile.c:	Potential buffer overflow. [Bug 1225571]
-	Thanks to Pat Thoyts for discovery and fix.
+2008-05-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* tests/safe.test:	Backport performance improvement from
-	reduced $::auto_path.
+	* generic/tclNamesp.c (Tcl_SetNamespaceUnknownHandler): Corrected odd
+	logic for handling installation of namespace unknown handlers which
+	could lead too very strange things happening in the error case.
 
-2005-06-21  Pat Thoyts  <patthoyts@users.sourceforge.net>
+2008-05-16  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/winDde.test: Added some waits to the dde server script to
-	let event processing run after we create the dde server and before
-	we exit the server process. This avoids 'server did not respond'
-	errors.
+	* generic/tclCompile.c: Fix crash with tcl_traceExec. Found and
+	fixed by Alexander Pasadyn [Bug 1964803].
 
-2005-06-21  Kevin Kenny  <kennykb@acm.org>
+2008-05-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclFileName.c: Corrected a problem where a directory name
-	containing a colon can crash the process on Windows [Bug 1194458]
-	* tests/fileName.test: Added test for [file split] and [file join]
-	with a name containing a colon.
-	* win/tclWinPipe.c: Reverted davygrvy's changes of 2005-04-19;
-	they cause multiple failures in io.test. [Bug 1225044, still open]
+	* generic/tclCompCmds.c (TclCompileDictAppendCmd): Fix silly
+	off-by-one error that caused a crash every time a compiled 'dict
+	append' with more than one value argument was used. Found by Colin
+	McCormack.
 
-2005-06-21  Don Porter  <dgp@users.sourceforge.net>
+2008-04-26  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* generic/tclBasic.c:	Made the walk of the active trace list aware
-	* generic/tclCmdMZ.c:	of the direction of trace scanning, so the
-	* generic/tclInt.h:	proper correction can be made. [Bug 1224585]
-	* tests/trace.test (trace-34.2,3):
+	* generic/tclAsync.c: Tcl_AsyncDelete(): panic if attempt to locate
+	handler token fails. Happens when some other thread attempts to delete
+	somebody else's token.
 
-	* generic/tclBasic.c (Tcl_DeleteTrace):	Added missing walk of the
-	* tests/trace.test (trace-34.1):	list of active traces to
-	cleanup references to traces being deleted. [Bug 1201035]
+	Also, panic early if we find out the wrong thread attempting to delete
+	the async handler (common trap). As, only the one that created the
+	handler is allowed to delete it.
 
-2005-06-20  Don Porter  <dgp@users.sourceforge.net>
+2008-04-24  Andreas Kupries  <andreask@activestate.com>
 
-	* doc/FileSystem.3: added missing Tcl_GlobTypeData documentation [Bug
-	935853]
+	* tests/ioCmd.test: Extended testsuite for reflected channel
+	implementation. Added test cases about how it handles if the rug is
+	pulled out from under a channel (= killing threads, interpreters
+	containing the tcl command for a channel, and channel sitting in a
+	different interpreter/thread.)
 
-2005-06-18  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclIORChan.c: Fixed the bugs exposed by the new testcases,
+	redone most of the cleanup and exit handling.
 
-	* generic/tclInt.h: ensure WORDS_BIGENDIAN is defined correctly with
-	fat compiles on Darwin (i.e. ppc and i386 at the same time), the
-	configure AC_C_BIGENDIAN check is not sufficient in this case because
-	a single run of the compiler builds for two architectures with
-	different endianness.
+2008-04-15  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tcl.m4 (Darwin): add -headerpad_max_install_names to LDFLAGS to
-	ensure we can always relocate binaries with install_name_tool.
+	* generic/tclIO.c (CopyData): Applied another patch by Alexandre
+	* io.test (io-53.8a): Ferrieux <ferrieux@users.sourceforge.net>,
+	* chanio.test (chan-io-53.8a): to shift EOF handling to the async
+	part of the command if a callback is specified, should the channel
+	be at EOF already when fcopy is called. Testcase by myself.
 
-	* unix/configure: autoconf-2.13
+2008-04-14  Kevin B. Kenny <kennykb@acm.org>
 
-2005-06-18  Don Porter  <dgp@users.sourceforge.net>
+	* unix/tclUnixTime.c (NativeGetTime): Removed obsolete use of
+	'struct timezone' in the call to 'gettimeofday'. [Bug 1942197].
+	* tests/clock.test (clock-33.5, clock-33.5a, clock-33.8, clock-33.8a):
+	Added comments to the test that it can fail on a heavily loaded
+	system.
 
-	* changes:		Update changes for 8.4.11 release
+2008-04-11  Don Porter	<dgp@users.sourceforge.net>
 
-	* README:		Bump version number to 8.4.11
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure.in:
+	* generic/tcl.h:	Bump version number to 8.5.3b1 to distinguish
+	* library/init.tcl:	CVS development snapshots from the 8.5.2 and
+	* unix/configure.in:	8.5.3 releases.
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
+	* README
 
-	* unix/configure:	autoconf
+	* unix/configure:	autoconf (2.59)
 	* win/configure:
 
-2005-06-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Fix for [Bug 1154163]; only
-	* tests/format.test: insert 'l' modifier when it is needed.
-
-2005-06-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* unix/tclUnixNotfy.c (Tcl_FinalizeNotifier): Add dummy variable
-	so threaded build compiles.
-
-2005-06-06  Kevin B. Kenny  <kennykb@acm.org>
-
-	* win/tclWin32Dll.c: Corrected another buglet in the assembly code for
-	stack probing on Win32/gcc. [Bug 1213678]
-
-2005-06-03  Daniel Steffen  <das@users.sourceforge.net>
-
-	*** 8.4.10 TAGGED FOR RELEASE ***
-
-	* unix/tclLoadDyld.c: fixed header conflict when building this file
-	with USE_TCL_STUBS.
-
-	* macosx/Makefile: fixed 'embedded' target.
+2008-04-10  Andreas Kupries  <andreask@activestate.com>
 
-2005-06-02  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIOCmd.c (Tcl_FcopyObjCmd): Keeping check for negative
+	values, changed to not be an error, but behave like the special
+	value -1 (copy all, default).
 
-	* unix/Makefile.in (html): add BUILD_HTML_FLAGS optional var
-	* tools/tcltk-man2html.tcl: add a --useversion to prevent
-	confusion when multiple Tcl source dirs exist.
+	* tests/iocmd.test (iocmd-15.{12,13}): Removed.
 
-	* changes: updated for 8.4.10 release (porter)
+	* tests/io.test (io-52.5{,a,b}): Reverted last change, added
+	* tests/chanio.test (chan-io-52.5{,a,b}): comment regarding the
+	meaning of -1, added two more testcases for other negative values,
+	and input wrapped to negative.
 
-2005-05-31  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+2008-04-09  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tclUnixNotfy.c: the notifier thread is now created as
-	joinable thread and it is properly joined in Tcl_FinalizeNotifier.
-	This is an attempt to fix [Bug 1082283]
+	* tests/chanio.test (chan-io-52.5): Removed '-size -1' from test,
+	* tests/io.test (io-52.5): does not seem to have any bearing, and
+	  was an illegal value.
 
-2005-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIOCmd.c (Tcl_FcopyObjCmd): Added checking of -size
+	* tests/ioCmd.test (iocmd-15.{13,14}): value to reject negative
+	values, and values overflowing 32-bit signed. [Bug 1557855]. Basic
+	patch by Alexandre Ferrieux <ferrieux@users.sourceforge.net>, with
+	modifications from me to separate overflow from true negative
+	value. Extended testsuite.
 
-	* win/tclWinThrd.c (TclpFinalizeThreadData): move tlsKey defn
-	to top of file and clarify name (was 'key'). [Bug 1204064]
+2008-04-08  Andreas Kupries  <andreask@activestate.com>
 
-2005-05-27  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tests/io.test (io-53.8): Fixed ordering of vwait and after
+	cancel. cancel has to be done after the vwait completes.
 
-	* README:	    Bumped patchlevel to 8.4.10
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/tcl.spec, unix/configure, unix/configure.in:
-	* win/configure, win/configure.in:
+2008-04-09  Daniel Steffen  <das@users.sourceforge.net>
 
-2005-05-26  Daniel Steffen  <das@users.sourceforge.net>
+	* tests/chanio.test (chan-io-53.8,53.9,53.10):	fix typo & quoting for
+	* tests/io.test (io-53.8,53.9,53.10):		spaces in builddir path
 
-	* macosx/Makefile: moved & corrected EMBEDDED_BUILD check.
+2008-04-07  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/configure.in: corrected framework finalization to softlink
-	stub library to Versions/8.x subdir instead of Versions/Current.
-	* unix/configure: autoconf-2.13
+	* tests/io.test (io-53.10): Testcase for bi-directionaly fcopy.
+	* tests/chanio.test:
+	* generic/tclIO.c: Additional changes to data structures for fcopy
+	* generic/tclIO.h: and channels to perform proper cleanup in case
+	of a channel having two background copy operations running as is
+	now possible.
 
-2005-05-25  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tests/io.test (io-53.10): Testcase for bi-directionaly fcopy.
+	* generic/tclIO.c: Additional changes to data structures for fcopy
+	and channels to perform proper cleanup in case of a channel having
+	two background copy operations running as is now possible.
 
-	* generic/tclCmdMZ.c (Tcl_TimeObjCmd): add necessary cast
+2008-04-07  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/configure, unix/configure.in: ensure false Tcl.framework is
-	only created with --enable-framework
+	* generic/tclIO.c (BUSY_STATE, CheckChannelErrors,
+	TclCopyChannel): New macro, and the places using it. This change
+	allows for bi-directional fcopy on channels. [Bug 1350564]. Thanks
+	to Alexandre Ferrieux <ferrieux@users.sourceforge.net> for the
+	patch.
 
-2005-05-24  Daniel Steffen  <das@users.sourceforge.net>
+2008-04-07  Reinhard Max  <max@suse.de>
 
-	* tests/env.test: added DYLD_FRAMEWORK_PATH to the list of env vars
-	that need to be handled specially.
+	* generic/tclStringObj.c (Tcl_AppendFormatToObj): Fix [format {% d}]
+	so that it behaves the same way as in 8.4 and as C's printf().
+	* tests/format.test: Add a test for '% d' and '%+d'.
 
-	* macosx/Makefile:
-	* macosx/README:
-	* macosx/Tcl-Info.plist.in (new file):
-	* unix/Makefile.in:
-	* unix/configure.in:
-	* unix/tcl.m4:
-	* unix/tclUnixInit.c: moved all Darwin framework build support from
-	macosx/Makefile into the standard unix configure/make buildsystem, the
-	macosx/Makefile is no longer required to build Tcl.framework (but its
-	functionality is still available for backwards compatibility).
-	* unix/configure: autoconf-2.13
+2008-04-05  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclIOUtil.c (TclLoadFile):
-	* generic/tclInt.h:
-	* unix/tcl.m4:
-	* unix/tclLoadDyld.c: added support for [load]ing .bundle binaries in
-	addition to .dylib's: .bundle's can be [unload]ed (unlike .dylib's),
-	and can be [load]ed from memory, e.g. directly from VFS without
-	needing to be written out to a temporary location first. [Bug 1202209]
-	* unix/configure: autoconf-2.13
+	* tests/chanio.test (chan-io-53.9):
+	* tests/io.test (io-53.9): Made test cleanup robust against the
+	possibility of slow process shutdown on Windows.
+
+	* win/tcl.m4: Added -D_CRT_SECURE_NO_DEPRECATE and
+	-DCRT_NONSTDC_NO_DEPRECATE to the MSVC compilation flags so that
+	the compilation doesn't barf on perfectly reasonable Posix system
+	calls.
+	* win/configure: Manually patched (don't have the right autoconf
+	to hand).
+
+	* win/tclWinFile.c: (WinSymLinkDirectory): Fixed a problem that
+	Tcl was creating an NTFS junction point (IO_REPARSE_TAG_MOUNT_POINT)
+	but filling in the union member for a Vista symbolic link. We had
+	gotten away with this error because the union member
+	(SymbolicLinkReparseBuffer) was misdefined in this file and in the
+	'winnt.h' in early versions of MinGW. MinGW 3.4.2 has the correct
+	definition of SymbolicLinkReparseBuffer, exposing the mismatch,
+	and making tests cmdAH-19.4.1, fCmd-28.*, and filename-11.* fail.
 
-	* generic/tclCmdMZ.c (Tcl_TimeObjCmd): change [time] called with a
-	count > 1 to return a string with a float value instead of a rounded
-	off integer. [Bug 1202178]
+2008-04-04  Andreas Kupries  <andreask@activestate.com>
 
-2005-05-20  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
+	* tests/io.test (io-53.9): Added testcase for [Bug 780533], based
+	* tests/chanio.test: on Alexandre's test script. Also fixed
+	problem with timer in preceding test, was not canceled properly in
+	the ok case.
 
-	* generic/tclParseExpr.c: removed unreferenced stack variable "errMsg"
-	probably included by fixing [Bug 1201589] (see below).
+2008-04-04  Andreas Kupries  <andreask@activestate.com>
 
-2005-05-20  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclIORChan.c (ReflectOutput): Allow zero return from
+	write when input was zero-length anyway. Otherwise keept it an
+	error, and separate the message from 'written too much'.
 
-	* generic/tclParseExpr.c:	Corrected parser to recognize all
-	boolean literals accepted by Tcl_GetBoolean, including prefixes like
-	"y" and "f", and to allow "eq" and "ne" as function names in the
-	proper context. [Bug 1201589]
+	* tests/ioCmd.test (iocmd-24.6): Testcase updated for changed
+	message.
 
-2005-05-19  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclIORChan.c (ReflectClose): Added missing removal of
+	the now closed channel from the reflection map. Before we could
+	crash the system by invoking 'chan postevent' on a closed
+	reflected channel, dereferencing the dangling pointer in the map.
 
-	* macosx/tclMacOSXNotify.c (Tcl_InitNotifier): fixed crashing
-	CFRelease of runLoopSource in Tcl_InitNotifier (reported by Zoran):
-	CFRunLoopAddSource doesn't CFRetain, so can only CFRelease the
-	runLoopSource in Tcl_FinalizeNotifier.
+	* tests/ioCmd.test (iocmd-31.8): Testcase for the above.
 
-2005-05-14  Daniel Steffen  <das@users.sourceforge.net>
+2008-04-03  Andreas Kupries  <andreask@activestate.com>
 
-	* macosx/tclMacOSXBundle.c:
-	* unix/tclUnixInit.c:
-	* unix/tcl.m4 (Darwin): made use of CoreFoundation API configurable
-	and added test of CoreFoundation availablility to allow building on
-	ppc64, replaced HAVE_CFBUNDLE by HAVE_COREFOUNDATION; test for
-	availability of Tiger or later OSSpinLockLock API.
+	* generic/tclIO.c (CopyData): Applied patch [Bug 1932639] to
+	* tests/io.test: prevent fcopy from calling -command synchronously
+	* tests/chanio.test: the first time. Thanks to Alexandre Ferrieux
+	<ferrieux@users.sourceforge.net> for report and patch.
 
-	* unix/tclUnixNotfy.c:
-	* unix/Makefile.in:
-	* macosx/tclMacOSXNotify.c (new file): when CoreFoundation is
-	available, use new CFRunLoop based notifier: allows easy integration
-	with other event loops on Mac OS X, in particular the TkAqua Carbon
-	event loop is now integrated via a standard tcl event source (instead
-	of TkAqua upon loading having to finalize the exsting notifier and
-	replace it with its custom version). [Patch 1202052]
+2008-04-02  Andreas Kupries  <andreask@activestate.com>
 
-	* tests/unixNotfy.test: don't run unthreaded tests on Darwin since
-	notifier may be using threads even in unthreaded core.
+	* generic/tclIO.c (CopyData): Applied patch for the fcopy problem
+	[Bug 780533], with many thanks to Alexandre Ferrieux
+	<ferrieux@users.sourceforge.net> for tracking it down and
+	providing a solution. Still have to convert his test script into a
+	proper test case.
 
-	* unix/tclUnixPort.h:
-	* unix/tcl.m4 (Darwin): test for thread-unsafe realpath durning
-	configure, as Darwin 7 and later realpath is threadsafe.
+2008-04-01  Andreas Kupries  <andreask@activestate.com>
 
-	* macosx/tclMacOSXBundle.c:
-	* unix/tclLoadDyld.c:
-	* unix/tclUnixInit.c: fixed gcc 4.0 warnings.
+	* generic/tclStrToD.c: Applied patch for [Bug 1839067] (fp
+	* unix/tcl.m4: rounding setup on solaris x86, native cc), provided
+	* unix/configure: by Michael Schlenker. configure regen'd.
 
-	* unix/configure: autoconf-2.13
+2008-04-01  Don Porter	<dgp@users.sourceforge.net>
 
-2005-05-10  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclStubLib.c (Tcl_InitStubs):	Added missing error message.
+	* generic/tclPkg.c (Tcl_PkgInitStubsCheck):
 
-	* tests/string.test: string-10.[21-30]
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): add extra checks to
-	prevent possible UMR in unichar cmp function for string map.
+2008-03-30  Kevin Kenny  <kennykb@acm.org>
 
-2005-05-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclInt.h (TclIsNaN):
+	* unix/configure.in: Added code to the configurator to check for
+	                     a standard isnan() macro and use it if one
+	                     is found.  This change avoids bugs where
+	                     the test of ((d) != (d)) is optimized away
+			     by an overaggressive compiler. [Bug 1783544]
+	* generic/tclObj.c: Added missing #include <math.h> needed to
+			    locate isnan() after the above change.
 
-	* unix/tcl.m4, unix/configure: correct Solaris 10 (5.10) check and
-	add support for x86_64 Solaris cc builds.
+	* unix/configure: autoconf-2.61
 
-2005-04-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* tests/mathop.test (mathop-25.9, mathop-25.14): Modified tests
+	to deal with (slightly buggy) math libraries in which pow()
+	returns an incorrectly rounded result. [Bug 1808174]
 
-	* doc/FileSystem.3: Backport of doc fix. [Bug 1172401]
+2008-03-26  Don Porter	<dgp@users.sourceforge.net>
 
-2005-04-27  Don Porter  <dgp@users.sourceforge.net>
+	*** 8.5.2 TAGGED FOR RELEASE ***
 
-	* library/init.tcl:	Corrected flaw in interactive command
-	* tests/main.test:	auto-completion. [Bug 1191409]
+	* generic/tcl.h:	Bump to 8.5.2 for release.
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* tests/unixInit.test (7.1):	Alternative fix for the
-	2005-04-22 commit.
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-2005-04-25  Daniel Steffen  <das@users.sourceforge.net>
+	* changes:		Updated for 8.5.2 release.
+
+2008-03-28  Donal K. Fellows  <dkf@users.sf.net>
+
+	* tests/fCmd.test: Substantial rewrite to use many more tcltest
+	features. Great reduction in quantity of [catch] gymnastics. Several
+	buggy tests fixed, including one where the result of the previous test
+	was being checked!
+
+2008-03-27  Kevin B. Kenny <kennykb@acm.org>
+
+	* library/tzdata/America/Marigot:
+	* library/tztata/America/St_Barthelemy:
+	* library/tzdata/America/Argentina/San_Luis:
+	* library/tzdata/Asia/Ho_Chi_Minh:
+	* library/tzdata/Asia/Kolkata:  (new files)
+	* library/tzdata/America/Caracas:
+	* library/tzdata/America/Havana:
+	* library/tzdata/America/Santiago:
+	* library/tzdata/America/Argentina/Buenos_Aires:
+	* library/tzdata/America/Argentina/Catamarca:
+	* library/tzdata/America/Argentina/Cordoba:
+	* library/tzdata/America/Argentina/Jujuy:
+	* library/tzdata/America/Argentina/La_Rioja:
+	* library/tzdata/America/Argentina/Mendoza:
+	* library/tzdata/America/Argentina/Rio_Gallegos:
+	* library/tzdata/America/Argentina/San_Juan:
+	* library/tzdata/America/Argentina/Tucuman:
+	* library/tzdata/America/Argentina/Ushuaia:
+	* library/tzdata/Asia/Baghdad:
+	* library/tzdata/Asia/Calcutta:
+	* library/tzdata/Asia/Damascus:
+	* library/tzdata/Asia/Saigon:
+	* library/tzdata/Pacific/Easter:
+		Changes up to and including Olson's tzdata2008b.
 
-	* compat/string.h: fixed memchr() protoype for __APPLE__ so that we
-	build on Mac OS X 10.1 again.
+2008-03-27  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclNotify.c (TclFinalizeNotifier): fixed notifier not being
-	finalized in unthreaded core (was testing for notifier initialization
-	in current thread by checking thread id != 0 but thread id is always 0
-	in untreaded core).
+	* unix/tcl.m4 (SunOS-5.1x): fix 64bit support for Sun cc. [Bug 1921166]
 
-	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): sync with HEAD: only declare
-	and use timeout var in unthreaded core.
+	* unix/configure: autoconf-2.59
 
-	* unix/Makefile.in: added @PLAT_SRCS@ to SRCS and split out
-	NOTIFY_SRCS from UNIX_SRCS for parity with UNIX_OBJS & NOTIFY_OBJS.
+2008-03-26  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/configure.in: only run check for broken strstr implementation
-	if AC_REPLACE_FUNCS(strstr) hasn't already determined that strstr is
-	unavailable, otherwise compat/strstr.o will be used twice (resulting
-	in duplicate symbol link errors on Mac OS X 10.1)
+	* changes:		Updated for 8.5.2 release.
 
-	* unix/tcl.m4 (Darwin): added configure checks for recently added
-	linker flags -single_module and -search_paths_first to allow building
-	with older tools (and on Mac OS X 10.1), use -single_module in
-	SHLIB_LD and not just T{CL,K}_SHLIB_LD_EXTRAS, added unexporting from
-	Tk of symbols from libtclstub to avoid duplicate symbol warnings,
-	added PLAT_SRCS definition for Mac OS X.
-	(SC_MISSING_POSIX_HEADERS): added caching of dirent.h check.
-	(SC_TCL_64BIT_FLAGS): fixed 'checking for off64_t' message output.
+2008-03-24  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* unix/configure: autoconf-2.13
+	* generic/tclBinary.c: [Bug 1923966] - crash in binary format
+	* tests/binary.test:   Added tests for the above crash condition.
 
-2005-04-22  Don Porter  <dgp@users.sourceforge.net>
+2008-03-21  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclCmdMZ.c:	Corrected intrep-dependence of
-	* tests/string.test:	[string is boolean] [Bug 1187123]
+	* doc/switch.n: Clarified documentation in respect of two-argument
+	invokation. [Bug 1899962]
 
-2005-04-22  Daniel Steffen  <das@users.sourceforge.net>
+	* tests/switch.test: Added more tests of regexp-mode compilation of
+	the [switch] command. [Bug 1854435]
 
-	* tests/unixInit.test (7.1): fixed failure when running tests with
-	-tmpdir arg not set to working dir.
+2008-03-20  Donal K. Fellows  <dkf@users.sf.net>
 
-2005-04-20  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tcl.h, generic/tclThreadAlloc.c: Tidied up the declarations
+	of Tcl_GetMemoryInfo so that it is always defined. Will panic when
+	called against a Tcl that was previously built without it at all,
+	which is OK because that also indicates a serious mismatch between
+	memory configuration options.
 
-	* generic/tclGet.c (Tcl_GetInt):	Corrected error that did not
-	* generic/tclObj.c (Tcl_GetIntFromObj): permit 0x80000000 to be
-	recognized as an integer on TCL_WIDE_INT_IS_LONG systems [Bug 1090869]
+2008-03-19  Donal K. Fellows  <dkf@users.sf.net>
 
-2005-04-19  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tcl.h, generic/tclThreadAlloc.c (Tcl_GetMemoryInfo): Make
+	sure this function is available when direct linking. [Bug 1868171]
 
-	* tests/winPipe.test (winpipe-6.2): remove -blocking 1 as this one
-	can truly block.
+	* tests/reg.test (reg-33.14): Marked nonPortable because some
+	environments have small default stack sizes. [Bug 1905562]
 
-2005-04-19  David Gravereaux <davygrvy@pobox.com>
+2008-03-18  Andreas Kupries  <andreask@activestate.com>
 
-	* win/tclWinPipe.c: The pipe channel driver now respects the -blocking
-	option when closing. The windows pipe driver now has the same behavior
-	as the UNIX side. This change is to avoid a hung shell when exiting
-	due to open pipes that refuse to close in a graceful manner.
-	* doc/open.n: Added a note about -blocking 0 and lack of exit status
-	as it had never been documented. [Bug 947693]
+	* library/tm.tcl (::tcl::tm::UnknownHandler): Changed 'source' to
+	'source -encoding utf-8'. This fixes a portability problem of Tcl
+	Modules pointed out by Don Porter. By using plain 'source' we were at
+	the mercy of 'encoding system', making modules less portable than they
+	could be. The exact scenario: A writes a TM in some weird encoding
+	which is A's system encoding, distributes it, and somewhere else it
+	cannot be read/used because the system encoding is different. Forcing
+	the use of utf-8 makes the module portable.
 
-	***POTENTIAL INCOMPATIBILITY***
+	***INCOMPATIBILITY*** for all Tcl Modules already written in non-utf-8
+	compatible encodings.
 
-	Scripts that use async pipes on windows, must (like the UNIX side) set
-	-blocking to 1 before calling [close] to receive the exit status.
+2008-03-18  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/winPipe.test (winpipe-6.1/2): added 'fconfigure $f -blocking
-	1' so the exit status can be acquired.
+	* generic/tclExecute.c:	Patch from Miguel Sofer to correct the
+	alignment of memory allocated by GrowEvaluationStack(). [Bug 1914503]
 
-2005-04-13  David Gravereaux <davygrvy@pobox.com>
+2008-03-18  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclIO.c (Tcl_SetChannelBufferSize): Lowest size limit
-	* tests/io.test:	changed from ten bytes to one byte. Need for
-	* tests/iogt.test:	this change was proven by Ross Cartlidge
-	<rossc@cisco.com> where [read stdin 1] was grabbing 10 bytes followed
-	by starting a child process that was intended to continue reading from
-	stdin. Even with -buffersize set to one, nine chars were getting lost
-	by the buffersize over reading for the native read() caused by [read].
+	* library/tm.tcl (::tcl::tm::Defaults): Modified handling of
+	environment variables. See [Bug 1914604]. Solution slightly different
+	than proposed in the report. Using the underscored form TCLX_y_TM_PATH
+	even if TCLX.y_TM_PATH exists. Also using a loop to cut prevent code
+	replication.
 
-2005-04-12  Kevin B. Kenny  <kennykb@acm.org>
+2008-03-16  Donal K. Fellows  <dkf@users.sf.net>
 
-	* compat/strstr.c: Added default definition of NULL to accommodate
-	building on systems with badly broken headers. [Bug 1175161]
+	* generic/tclCompCmds.c (TclCompileDictForCmd): Correct the handling
+	of stack space calculation (the jump pattern used was confusing the
+	simple-minded code doing the calculations). [Bug 1903325]
 
-2005-04-09  Daniel Steffen  <das@users.sourceforge.net>
+	* doc/lreplace.n: Clarified documentation of what happens with
+	negative indices. [Bug 1905809] Added example, tidied up formatting.
 
-	* macosx/README: updated requirements for OS & developer tool versions
-	+ other small fixes/cleanup.
+2008-03-14  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tcl.m4 (Darwin): added -single_module linker flag to
-	TCL_SHLIB_LD_EXTRAS and TK_SHLIB_LD_EXTRAS.
-	* unix/configure: autoconf-2.13
+	* generic/tclBasic.c (OldMathFuncProc):	Same workaround protection
+	from bad TclStackAlloc() alignment. Thanks George Peter Staplin.
 
-2005-04-05  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd):	Use ckalloc() to allocate
+	SortElement arrays instead of TclStackAlloc() which isn't getting
+	alignment right. Workaround for [Bug 1914503].
 
-	Set of changes correcting huge memory waste (not a leak) when a thread
-	exits. This has been introduced in 8.4.7 within an attempt to
-	correctly cleanup after ourselves when Tcl library is being unloaded
-	with the Tcl_Finalize() call.
+2008-03-14  Reinhard Max  <max@suse.de>
 
-	This fixes the [Bug 1178445].
+	* generic/tclTest.c:  Ignore the return value of write() when we are
+	* unix/tclUnixPipe.c: about to exit anyways.
 
-	* generic/tclInt.h: added prototypes for TclpFreeAllocCache() and
-	TclFreeAllocCache()
+2008-03-13  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclThreadAlloc.c: modified TclFinalizeThreadAlloc() to
-	explicitly call TclpFreeAllocCache with the NULL-ptr as argument
-	signalling cleanup of private tsd key used only by the threading
-	allocator.
+	* unix/configure.in:	Use backslash-quoting instead of double-quoting
+	* unix/tcl.m4:		for lib paths in tclConfig.sh. [Bug 1913622]
+	* unix/configure:	autoconf-2.59
 
-	* unix/tclUnixThrd.c: fixed TclpFreeAllocCache() to recognize when
-	being called with NULL argument. This is a signal for it to clean up
-	the tsd key associated with the threading allocator.
+2008-03-13  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/tclWinThrd.c: renamed TclWinFreeAllocCache to TclpFreeAllocCache
-	and fixed to recognize when being called with NULL argument. This is a
-	signal for it to clean up the tsd key associated with the threading
-	allocator.
+	* changes:		Updated for 8.5.2 release.
 
-2005-04-05  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclStrToD.c:	Resolve identifier conflict over "pow10" with
+	libm in Cygwin and DJGPP. Thanks to Gordon Schumacher and Philip
+	Moore. [Patch 1800636]
 
-	* generic/tclExecute.c (ExprSrandFunc):	Replaced incursions into the
-	* generic/tclUtil.c (TclGetIntForIndex): intreps of numeric types with
-	simpler calls of Tcl_GetIntFromObj and Tcl_GetLongFromObj, now that
-	those routines are better behaved wrt shimmering. [Patch 1177129]
+2008-03-12  Daniel Steffen  <das@users.sourceforge.net>
 
-2005-03-29  Jeff Hobbs  <jeffh@ActiveState.com>
+	* macosx/Tcl.xcodeproj/project.pbxproj:	Add support for Xcode 3.1
+	* macosx/Tcl.xcodeproj/default.pbxuser:	CODE_SIGN_IDENTITY and
+	* macosx/Tcl-Common.xcconfig:		'xcodebuild install'.
 
-	* win/tcl.m4, win/configure: do not require cygpath in macros to
-	allow msys alone as an alternative.
+2008-03-12  Andreas Kupries <andreask@activestate.com>
 
-	* win/tclWinTime.c (TclpGetDate): use time_t for 'time' [Bug 1163422]
+	* doc/info.n: Replaced {expand} with {*}.
 
-2005-03-18  Don Porter  <dgp@users.sourceforge.net>
+2008-03-12  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclCompCmds.c (TclCompileIncrCmd):	Corrected checks for
-	immediate operand usage to permit leading space and sign characters.
-	Restores more efficient bytecode for [incr x -1] that got lost in the
-	CONST string reforms of Tcl 8.4. [Bug 1165671]
+	* unix/Makefile.in (install-libraries):	Bump http to 2.7
+	* win/Makefile.in (install-libraries):	Added -myaddr option to allow
+	* library/http/http.tcl (http::geturl):	control of selected socket
+	* library/http/pkgIndex.tcl:		interface. [Bug 559898]
+	* doc/http.n, tests/http.test:		Added -keepalive and
+	-protocol 1.1 with chunked transfer encoding support. [Bug 1063703,
+	1470377, 219225] (default keepalive is 0)
+	Added ability to override Host in -headers. [Bug 928154]
+	Added -strict option to control URL validation on per-call basis.
+	[Bug 1560506]
 
-	* generic/tclBasic.c (Tcl_EvalEx,TclEvalTokensStandard):
-	* generic/tclCmdMZ.c (Tcl_SubstObj):
-	* tests/basic.test (basic-46.4):	Restored recursion limit
-	* tests/parse.test (parse-19.*):	testing in nested command
-	substitutions within direct script evaluation (Tcl_EvalEx) that got
-	lost in the parser reforms of Tcl 8.1. Added tests for correct
-	behavior. [Bug 1115904]
+2008-03-11  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2005-03-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* library/http/http.tcl (http::geturl): Add -method option to support
+	* tests/http.test (http-3.1):		http PUT and DELETE requests.
+	* doc/http.n:				[Bug 1599901, 862554]
 
-	* generic/tclFileName.c:
-	* win/tclWinFile.c:
-	* tests/winFCMd.test: fix to 'file pathtype' and 'file norm' failures
-	on reserved filenames like 'COM1:', etc.
+	* library/http/http.tcl: Whitespace changes, code cleanup. Allow http
+	to be re-sourced without overwriting http state.
 
-2005-03-15  Kevin B. Kenny  <kennykb@acm.org>
+2008-03-11  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclClock.c:
-	* generic/tclDate.c:
-	* generic/tclGetDate.y:
-	* generic/tclInt.decls:
-	* unix/tclUnixTime.c:
-	* win/tclWinTime.c:	Replaced 'unsigned long' variable holding
-	times with 'Tcl_WideInt', to cope with systems on which a time_t is
-	wider than a long (Win64) [Bug 1163422]
-	* generic/tclIntDecls.h: Regen
+	* generic/tclEncoding.c (LoadEscapeEncoding): Avoid leaking escape
+	sub-encodings, fixes encoding-11.1 failing after iso2022-jp loaded.
+	[Bug 1893053]
 
-2005-03-15  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* macosx/tclMacOSXNotify.c: Avoid using CoreFoundation after fork() on
+	Darwin 9 even when TclpCreateProcess() uses vfork().
 
-	* unix/tcl.m4: Make it work on OpenBSD again. Imported patch
-	from the OpenBSD ports tree.
+	* macosx/Tcl.xcodeproj/project.pbxproj:	Add support for Xcode 3.1 and
+	* macosx/Tcl.xcodeproj/default.pbxuser:	configs for building with
+	* macosx/Tcl-Common.xcconfig:		gcc-4.2 and llvm-gcc-4.2.
 
-2005-03-10  Don Porter  <dgp@users.sourceforge.net>
+	* unix/tclUnixPort.h:			Workaround vfork() problems
+						in llvm-gcc-4.2.1 -O4 build.
 
-	* generic/tclCmdMZ.c (TclCheckInterpTraces):	Corrected mistaken
-	cast of ClientData to (TraceCommandInfo *) when not warranted. Thanks
-	to Yuri Victorovich for the report. [Bug 1153871]
+	* unix/tclUnixPort.h:			Move MODULE_SCOPE compat define
+						to top [Bug 1911102].
 
-2005-03-08  Jeff Hobbs  <jeffh@ActiveState.com>
+	* macosx/GNUmakefile:			Fix quoting to allow paths to
+	* macosx/Tcl-Common.xcconfig:		${builddir} and ${INSTALL_ROOT}
+	* unix/Makefile.in:			to contain spaces.
+	* unix/configure.in:
+	* unix/install-sh:
+	* unix/tcl.m4:
+	* tests/ioCmd.test:
 
-	* win/makefile.vc: clarify necessary defined vars that can come
-	from MSVC or the Platform SDK.
+	* unix/configure:			autoconf-2.59
 
-2005-02-24  Don Porter  <dgp@users.sourceforge.net>
+	* unix/Makefile.in (install-strip):	Strip non-global symbols from
+						dynamic library.
 
-	* library/tcltest/tcltest.tcl:	Better use of [glob -types] to avoid
-	* tests/tcltest.test:	failed attempts to [source] a directory, and
-	similar matters. Thanks to "mpettigr". [Bug 1119798]
+	* unix/tclUnixNotfy.c:			Fix warning.
 
-	* library/tcltest/pkgIndex.tcl: Bump to tcltest 2.2.8
+	* tests/exec.test (exec-9.7):		Reduce timing sensitivity
+	* tests/socket.test (socket-2.11):	(esp. on multi-proc machines).
 
-2005-02-23  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* tests/fCmd.test (fCmd-9.4):		Skip on Darwin 9 (xfail).
 
-	* doc/CrtChannel.3 (THREADACTIONPROC): Formatting fix. [Bug 1149605]
+2008-03-11  Miguel Sofer  <msofer@users.sf.net>
 
-2005-02-17  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclVar.c (TclDeleteNamespaceVars):
+	* tests/var.test (var-8.2): Unset traces on vars should be called with
+	a FQ named during namespace deletion. This was causing infinite loops
+	when unset traces recreated the var, as reported by Julian Noble. [Bug
+	1911919]
 
-	* win/tclWinFCmd.c (TraverseWinTree): use wcslen on wchar, not
-	Tcl_UniCharLen.
+2008-03-10  Don Porter	<dgp@users.sourceforge.net>
 
-2005-02-16  Miguel Sofer <msofer@users.sf.net>
+	* changes:		Updated for 8.5.2 release.
 
-	* doc/variable.n: fix for [Bug 1124160], variables are detected by
-	[info vars] but not by [info locals].
+	* doc/http.n:	Revised to indicate that [package require http 2.5.5]
+	is needed to get all the documented commands ([http::meta]).
 
-2005-02-10  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclEvent.c (TclDefaultBgErrorHandlerObjCmd):  Added error
+	* tests/event.test (event-5.*):	checking to protect against callers
+	passing invalid return options dictionaries. [Bug 1901113]
 
-	* unix/Makefile.in: remove SHLIB_LD_FLAGS (only for AIX, inlined
-	* unix/tcl.m4:	    into SHLIB_LD).  Combine AIX-* and AIX-5
-	* unix/configure:   branches in SC_CONFIG_CFLAGS.
-	Correct gcc builds for AIX-4+ and HP-UX-11.
+	* generic/tclBasic.c (ExprAbsFunc):	Revised so that the abs()
+	* tests/expr.test:	function and the [::tcl::mathfunc::abs]
+	command do not return the value of -0, or equivalent values with more
+	alarming string reps like -1e-350. [Bug 1893815]
 
-2005-02-10  Miguel Sofer <msofer@users.sf.net>
+2008-03-07  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclBasic.c (Tcl_EvalObjEx):
-	* tests/basic.test (basic-26.2): preserve the arguments passed to TEOV
-	in the pure-list branch, in case the list shimmers away. Fix for [Bug
-	1119369], reported by Peter MacDonald.
+	* generic/tclResult.c (ReleaseKeys): Workaround for [Bug 1904907].
+	Reset the return option keys to NULL to allow full re-initialization
+	by GetKeys(). This introduces a memory leak for the key objects, but
+	gets us around a crash in the finalization of reflected channels when
+	handling returns, either at compile- or runtime. In both cases we
+	access the keys after they have been released by their thread exit
+	handler. A proper fix is entangled with the untangling of the
+	finalization ordering and attendant issues. For now we choose the
+	lesser evil.
 
-2005-02-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-03-07  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/binary.n: Made the documentation of sign bit masking and
-	[binary scan] consistent. [Bug 1117017]
+	* generic/tclExecute.c (Tcl_ExprObj):	Revised expression bytecode
+	compiling so that bytecodes invalid due to changing context or due to
+	the difference between expressions and scripts are not reused. [Bug
+	1899164]
 
-2005-02-01  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdAH.c:	Revised direct evaluation implementation of
+	[expr] so that [expr $e] caches compiled bytecodes for the expression
+	as the intrep of $e.
 
-	* generic/tclExecute.c (TclCompEvalObj): Removed stray statement
-	left behind in prior code reorganization.
+	* tests/execute.test (execute-6.*):	More tests checking that
+	script bytecode is invalidated in the right situations.
 
-2005-01-28  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-03-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* unix/configure, unix/tcl.m4: add solaris 64-bit gcc build
-	support. [Bug 1021871]
+	* win/configure.in: Add AC_HEADER_STDC to support msys/win64.
 
-2005-01-27  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-03-06  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclBasic.c (Tcl_ExprBoolean, Tcl_ExprDouble)
-	(Tcl_ExprLong): Fix to recognize Tcl_WideInt type. [Bug 1109484]
+	* doc/namespace.n: Minor tidying up. [Bug 1909019]
 
-2005-01-27  Andreas Kupries <andreask@activestate.com>
+2008-03-04  Don Porter	<dgp@users.sourceforge.net>
 
-	TIP#218 IMPLEMENTATION
+	* tests/execute.test (6.3,4):	Added tests for [Bug 1899164].
 
-	* generic/tclDecls.h:	Regenerated from tcl.decls.
-	* generic/tclStubInit.c:
+2008-03-03  Reinhard Max  <max@suse.de>
 
-	* doc/CrtChannel.3:	Documentation of extended API,
-	* generic/tcl.decls:	extended testsuite, and
-	* generic/tcl.h:	implementation. Removal of old
-	* generic/tclIO.c:	driver-specific TclpCut/Splice
-	* generic/tclInt.h:	functions. Replaced with generic
-	* tests/io.test:	thread-action calls through the
-	* unix/tclUnixChan.c:	new hooks. Update of all builtin
-	* unix/tclUnixPipe.c:	channel drivers to version 4.
-	* unix/tclUnixSock.c:	Windows drivers extended to
-	* win/tclWinChan.c:	manage thread state in a thread
-	* win/tclWinConsole.c:	action handler.
-	* win/tclWinPipe.c:
-	* win/tclWinSerial.c:
-	* win/tclWinSock.c:
-	* mac/tclMacChan.c:
+	* unix/tclUnixChan.c: Fix mark and space parity on Linux, which uses
+	CMSPAR instead of PAREXT.
 
-2005-01-25  Don Porter  <dgp@users.sourceforge.net>
+2008-03-02  Miguel Sofer  <msofer@users.sf.net>
 
-	* library/auto.tcl:	Updated [auto_reset] to clear auto-loaded
-	procs in namespaces other than :: [Bug 1101670].
+	* generic/tclNamesp.c (GetNamespaceFromObj):
+	* tests/interp.test (interp-28.2): Spoil the intrep of an nsNameType
+	obj when the reference crosses interpreter boundaries.
 
-2005-01-25  Daniel Steffen  <das@users.sourceforge.net>
+2008-02-29  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tcl.m4 (Darwin): fixed bug with static build linking to dynamic
-	library in /usr/lib etc instead of linking to static library earlier
-	in search path. [Bug 956908]
-	Removed obsolete references to Rhapsody.
-	* unix/configure: autoconf-2.13
+	* generic/tclResult.c (Tcl_SetReturnOptions):	Revised the refcount
+	management of Tcl_SetReturnOptions to become that of a conventional
+	Consumer routine.  Thanks to Peter Spjuth for pointing out the
+	difficulties calling Tcl_SetReturnOptions with non-0-count value for
+	options.
+	* generic/tclExecute.c (INST_RETURN_STK): Revised the one caller
+	within Tcl itself which passes a non-0-count value to
+	Tcl_SetReturnOptions().
 
-2005-01-19  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclBasic.c (Tcl_AppendObjToErrorInfo):	Revised the
+	refcount management of Tcl_AppendObjToErrorInfo to become that of a
+	conventional Consumer routine. This preserves the ease of use for the
+	overwhelming common callers who pass in a 0-count value, but makes the
+	proper call with a non-0-count value less surprising.
+	* generic/tclEvent.c (TclDefaultBgErrorHandlerObjCmd):	Revised the
+	one caller within Tcl itself which passes a non-0-count value to
+	Tcl_AppendObjToErrorInfo().
 
-	* win/tclWinChan.c (FileCloseProc): Invoke TclpCutFileChannel() to
-	remove a FileInfo from the thread local list before deallocating it.
-	This should have been done via an earlier call to Tcl_CutChannel, but
-	I was running into a crash in the next call to Tcl_CutChannel during
-	the IO finalization stage.
+2008-02-28  Joe English  <jenglish@users.sourceforge.net>
 
-2005-01-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* unix/tclPort.h, unix/tclCompat.h, unix/tclUnixChan.h: Reduce scope
+	of <sys/filio.h> and <sys/ioctl.h> #includes. [Patch 1903339]
 
-	* tests/winFCmd.test: made test independent of current drive. [Bug
-	1066528]
+2008-02-28  Joe English  <jenglish@users.sourceforge.net>
 
-2005-01-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* unix/tclUnixChan.c, unix/tclUnixNotfy.c, unix/tclUnixPipe.c:
+	Consolidate all code conditionalized on -DUSE_FIONBIO into one place.
+	* unix/tclUnixPort.h, unix/tclUnixCompat.c: New routine
+	TclUnixSetBlockingMode() [Patch 1903339].
 
-	* unix/tclUnixFCmd.c (CopyFile): Convert u_int to unsigned to make
-	clashes with types in standard C headers less of a problem. [Bug
-	1098829]
+2008-02-28  Don Porter	<dgp@users.sourceforge.net>
 
-2005-01-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclBasic.c (TclEvalObjvInternal):	Plug memory leak when
+	an enter trace deletes or changes the command, prompting a reparsing.
+	Don't let the second pass lose commandPtr value allocated during the
+	first pass.
 
-	* library/http/http.tcl (http::mapReply): Significant performance
-	enhancement by using [string map] instead of [regsub]/[subst], and
-	update version requirement to Tcl8.4. [Bug 1020491]
+	* generic/tclCompExpr.c (ParseExpr):	Plug memory leak in error
+	message generation.
 
-2005-01-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclStringObj.c (Tcl_AppendFormatToObj): [format %llx $big]
+	leaked an mp_int.
 
-	* unix/tclUnixInit.c (localeTable): Add encoding mappings for some
-	Chinese locales. [Bug 1084595]
+	* generic/tclCompCmds.c (TclCompileReturnCmd):	The 2007-10-18 commit
+	to optimize compiled [return -level 0 $x] [RFE 1794073] introduced a
+	memory leak of the return options dictionary. Fixing that.
 
-	* doc/lsearch.n: Convert to other form of emacs mode control
-	comment to prevent problems with old versions of man. [Bug 1085127]
+2008-02-27  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2004-12-29  Jeff Hobbs  <jeffh@ActiveState.com>
+	* library/http/http.tcl: [Bug 705956] - fix inverted logic when
+	cleaning up socket error in geturl.
 
-	* win/tcl.m4, win/configure: update MSVC CFLAGS_OPT to -O2, remove
-	-Gs (included in -O2) and -GD (outdated).  Use "link -lib" instead
-	of "lib" binary and remove -YX for MSVC7 portability.  Add
-	-fomit-frame-pointer for gcc OPT compiles. [Bug 1092952, 1091967]
+2008-02-27  Kevin B. Kenny  <kennykb@acm.org>
 
-2004-12-13  Kevin B. Kenny  <kennykb@acm.org>
+	* doc/clock.n: Corrected minor indentation gaffe in the penultimate
+	paragraph. [Bug 1898025]
+	* generic/tclClock.c (ParseClockFormatArgs): Changed to check that the
+	clock value is in the range of a 64-bit integer. [Bug 1862555]
+	* library/clock.tcl (::tcl::clock::format, ::tcl::clock::scan,
+	(::tcl::clock::add, ::tcl::clock::LocalizeFormat): Fixed bugs in
+	caching of localized strings that caused weird results when localized
+	date/time formats were used. [Bug 1902423]
+	* tests/clock.test (clock-61.*, clock-62.1): Regression tests for [Bug
+	1862555] and [Bug 1902423].
 
-	* doc/clock.n: Clarify that the [clock scan] command does not accept
-	the full range of ISO8601 point-in-time formats. [Bug 1075433]
+2008-02-26  Joe English  <jenglish@users.sourceforge.net>
 
-2004-12-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclIOUtil.c, unix/tclUnixPort.h, unix/tclUnixChan.c:
+	Remove dead/unused portability-related #defines and unused conditional
+	code.  See [Patch 1901828] for discussion.
 
-	* doc/Async.3: Reword for better grammar, better nroff and get the
-	flag name right. (Reported by David Welton.)
+2008-02-26  Joe English  <jenglish@users.sourceforge.net>
 
-2004-12-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIORChan.c (enum MethodName),
+	* generic/tclCompExpr.c (enum Marks): More stray trailing ","s
 
-	*** 8.4.9 TAGGED FOR RELEASE ***
+2008-02-26  Joe English  <jenglish@users.sourceforge.net>
 
-	* unix/tclUnixNotfy.c (NotifierThreadProc): init numFdBits [Bug
-	1079286]
+	* unix/configure.in(socklen_t test): Define socklen_t as "int" if
+	missing, not "unsigned". Use AC_TRY_COMPILE instead of
+	AC_EGREP_HEADER.
+	* unix/configure: regenerated.
 
-2004-12-02  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-02-26  Joe English  <jenglish@users.sourceforge.net>
 
-	* changes: updated for 8.4.9 release
+	* generic/tclCompile.h: Remove stray trailing "," from enum
+	InstOperandType definition (C99ism).
 
-2004-12-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+2008-02-26  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclIOUtil.c: fix and new tests for [Bug 1074671] to
-	* tests/fileSystem.test: ensure tilde paths are not returned specially
-	by 'glob'.
+	* generic/tclUtil.c (TclReToGlob): Fix the handling of the last star
+	* tests/regexpComp.test:	   possibly being escaped in
+	determining right anchor. [Bug 1902436]
 
-2004-12-01  Don Porter  <dgp@users.sourceforge.net>
+2008-02-26  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* library/auto.tcl (tcl_findLibrary): Disabled use of [file normalize]
-	that caused trouble with freewrap. [Bug 1072136]
+	* library/http/pkgIndex.tcl: Set version 2.5.5
+	* library/http/http.tcl:     It is better to do the [eof] check after
+	trying to read from the socket. No clashes found in testing. Added
+	http::meta command to access the http headers. [Bug 1868845]
 
-2004-11-26  Don Porter  <dgp@users.sourceforge.net>
+2008-02-22  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* tests/reg.test (reg-32.*): Added missing testregexp constraints.
+	* library/http/pkgIndex.tcl: Set version 2.5.4
+	* library/http/http.tcl:     Always check that the state array exists
+	in the http::status command. [Bug 1818565]
 
-	* library/auto.tcl (tcl_findLibrary): Made sure the uniquifying
-	operations on the search path does not also normalize.	[Bug 1072136]
+2008-02-13  Don Porter	<dgp@users.sourceforge.net>
 
-2004-11-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tcl.h:	Bump version number to 8.5.2b1 to distinguish
+	* library/init.tcl:	CVS development snapshots from the 8.5.1 and
+	* unix/configure.in:	8.5.2 releases.
+	* unix/tcl.spec:
+	* win/configure.in:
+	* README
 
-	* doc/dde.n: Resynchonized the documentation with itself and fixed
-	some formatting errors.
+	* unix/configure:	autoconf (2.59)
+	* win/configure:
 
-2004-11-25  Zoran Vasiljevic <vasiljevic@users.sf.net>
+2008-02-12  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* doc/Notify.3:
-	* doc/Thread.3: Added doc fixes and hints from [Bug 1068077].
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Corrected logic for
+	* tests/switch.test (switch-10.15): handling -nocase compilation; the
+	-exact -nocase option cannot be compiled currently. [Bug 1891827]
 
-2004-11-25  Reinhard Max  <max@suse.de>
+	* unix/README: Documented missing configure flags. [Bug 1799011]
 
-	* tests/tcltest.test: The order in which [glob] returns the file names
-	* tests/fCmd.test:    is undefined, so tests should not depend on it.
+2008-02-06  Kevin B. Kenny  <kennykb@acm.org>
 
-2004-11-24  Don Porter  <dgp@users.sourceforge.net>
+	* doc/clock.n (%N): Corrected an error in the explanation of the %N
+	format group.
+	* generic/tclClock.c (ClockParseformatargsObjCmd):
+	* library/clock.tcl (::tcl::clock::format):
+	* tests/clock.test (clock-1.0, clock-1.4):
+	Performance enhancements in [clock format] (moving the analysis of
+	$args into C code, holding on to Tcl_Objs with resolved command names,
+	[lassign] in place of [foreach], avoiding [namespace which] for
+	command resolution).
 
-	* unix/tcl.m4 (SC_ENABLE_THREADS): Corrected failure to determine
-	the number of arguments for readdir_r on SunOS systems. [Bug 1071701]
+2008-02-04  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/configure:	autoconf-2.13
+	*** 8.5.1 TAGGED FOR RELEASE ***
 
-2004-11-24  Jeff Hobbs  <jeffh@ActiveState.com>
+	* changes:		Updated for 8.5.1 release.
 
-	* README:	    Bumped patchlevel to 8.4.9
-	* generic/tcl.h:
+	* generic/tcl.h:	Bump to 8.5.1 for release.
+	* library/init.tcl:
 	* tools/tcl.wse.in:
-	* unix/tcl.spec, unix/configure, unix/configure.in:
-	* win/configure, win/configure.in:
-
-2004-11-24  Kevin B. Kenny  <kennykb@acm.org>
-
-	* unix/tcl.m4 (SC_ENABLE_THREADS): Corrected bad check for 3-argument
-	readdir_r(). [Bug 1001325]
-	* unix/configure: Regenerated.
-	* unix/tclUnixNotfy.c: Corrected all uses of 'select' to manage their
-	masks using the FD_CLR, FD_ISSET, FD_SET, and FD_ZERO macros rather
-	than bit-whacking that failed under Solaris-Sparc-64. [Bug 1071807]
-
-2004-11-23  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclCmdIL.c (InfoVarsCmd):	Corrected segfault in new
-	* tests/info.test (info-19.6):	trivial matching branch [Bug 1072654]
-
-2004-11-23  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclPathObj.c: fix and new test for [Bug 1043129] in
-	* tests/fileSystem.test: the treatment of backslashes in file join on
-	Windows.
-
-2004-11-22  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_TCL_64BIT_FLAGS): Define HAVE_TYPE_OFF64_T only when
-	off64_t, open64(), and lseek64() are defined. IRIX 5.3 is known to not
-	include an open64 function. [Bug 1030465]
-
-2004-11-22  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_ENABLE_THREADS): Check for a 2 argument version of
-	readdir_r that is known to exists under IRIX 5.3.
-	* unix/tclUnixThrd.c (TclpReaddir): Use either 2 arg or 3 arg version
-	of readdir_r. [Bug 1001325]
-
-2004-11-19  Reinhard Max  <max@suse.de>
-
-	*** 8.4.8 TAGGED FOR RELEASE ***
-
-	* unix/installManPage: Classic sed doesn't support | in REs.
-
-2004-11-19  Daniel Steffen  <das@users.sourceforge.net>
-
-	* macosx/Makefile:
 	* unix/configure.in:
-	* unix/tclUnixInit.c (MacOSXGetLibraryPath): changed detection of tcl
-	framework build when determining tclLibPath from overloaded
-	TCL_LIBRARY to configuration define TCL_FRAMEWORK. [Bug 1068088]
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* unix/configure: autoconf-2.13
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-	* tests/unixInit.test (7.1): fixed failure when running tests
-	with -tmpdir arg not set to working dir.
+2008-02-04  Miguel Sofer  <msofer@users.sf.net>
 
-2004-11-18  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclExecute.c (INST_CONCAT1): Fix optimisation for in-place
+	concatenation (was going over String type)
 
-	* changes:	Final updates for Tcl 8.4.8 release.
+2008-02-02  Daniel Steffen  <das@users.sourceforge.net>
 
-2004-11-18  Reinhard Max  <max@suse.de>
+	* unix/configure.in (Darwin):	Correct Info.plist year substitution in
+					non-framework builds.
 
-	* unix/tcl.m4 (SC_CONFIG_MANPAGES): Applied an improved version of
-	* unix/configure.in:		    [Patch 996085], that introduces
-	* unix/Makefile.in:		    --enable-man-suffix.
+	* unix/configure:		autoconf-2.59
 
-	* unix/installManPage:		    added
-	* unix/mkLinks.tcl:		    removed
-	* unix/mkLinks:			    removed
+2008-01-30  Miguel Sofer  <msofer@users.sf.net>
 
-2004-11-16  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclInterp.c (Tcl_GetAlias): Fix for [Bug 1882373], thanks go
+	to an00na.
 
-	* unix/tclUnixChan.c (TtySetOptionProc): fixed crash configuring
-	-ttycontrol on a channel. [Bug 1067708]
+2008-01-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-2004-11-16  Andreas Kupries <andreask@activestate.com>
+	* tools/tcltk-man2html.tcl: Reworked manual page scraper to do a
+	proper job of handling references to Ttk options. [Tk Bug 1876493]
 
-	* win/makefile.vc: Fixed bug in installation of http 2.5.
-	* win/makefile.bc: Was installed into directory http2.4.
-	* win/Makefile.in: This has been corrected.
-	* unix/Makefile.in:
-	* tools/tcl.wse.in:
-	* tools/tclmin.wse:
-
-2004-11-16  Don Porter  <dgp@users.sourceforge.net>
+2008-01-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* library/auto.tcl:	Updated [tcl_findLibrary] search path to
-	include the $::auto_path. [RFE 695441]
+	* doc/man.macros (SO, SE): Adjusted macros so that it is possible for
+	Ttk to have its "standard options" on a manual page that is not called
+	"options". [Tk Bug 1876493]
 
-2004-11-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-01-25  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/tclvars.n: Mention global variables set by tclsh and wish so
-	they are easier to find. [Patch 1065732]
+	* changes:		Updated for 8.5.1 release.
 
-2004-11-15  Don Porter  <dgp@users.sourceforge.net>
+2008-01-23  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c (Tcl_TraceObjCmd):	Fixed Bug 1065378 which failed
-	* tests/trace.test (trace-33.1):	to permit a variable trace
-	created with [trace variable] to be destroyed with [trace remove].
-	Thanks to Keith Vetter for the report.
+	* generic/tclInt.h:		New macro TclGrowParseTokenArray() to
+	* generic/tclCompCmds.c:	simplify code that might need to grow
+	* generic/tclCompExpr.c:	an array of Tcl_Tokens in the parsePtr
+	* generic/tclParse.c:		field of a Tcl_Parse. Replaces the
+	TclExpandTokenArray() routine via replacing:
+		int needed = parsePtr->numTokens + growth;
+		while (needed > parsePtr->tokensAvailable) {
+		    TclExpandTokenArray(parsePtr);
+		}
+	with:
+		TclGrowParseTokenArray(parsePtr, growth);
+	This revision merged over from dgp-refactor branch.
 
-2004-11-12  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompile.h:	Demote TclCompEvalObj() from internal stubs to
+	* generic/tclInt.decls:	a MODULE_SCOPE routine declared in
+	tclCompile.h.
 
-	* library/init.tcl:	Made [unknown] robust in the case that either
-	of the variables ::errorInfo or ::errorCode gets unset. [Bug 1063707]
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
 
-2004-11-12  Jeff Hobbs  <jeffh@ActiveState.com>
+2008-01-22  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclEncoding.c (TableFromUtfProc): correct crash
-	condition when TCL_UTF_MAX == 6. [Bug 1004065]
+	* generic/tclTimer.c (AfterProc):	Replace Tcl_EvalEx() with
+	Tcl_EvalObjEx() to evaluate [after] callbacks. Part of trend to favor
+	compiled execution over direct evaluation.
 
-2004-11-12  Daniel Steffen  <das@users.sourceforge.net>
+2008-01-22  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/clock.n:
-	* doc/registry.n:
-	* doc/upvar.n: fixed *roff errors uncovered by running 'make html'.
+	* generic/tclCmdIl.c (Tcl_LreverseObjCmd):
+	* tests/cmdIL.test (cmdIL-7.7): Fix crash on reversing an empty list.
+	[Bug 1876793]
 
-	* tools/tcltk-man2html.tcl: added faked support for bullet point
-	lists, i.e. *nroff ".IP \(bu" syntax.
-	Synced other changes from HEAD.
+2008-01-20  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-11-11  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/README: Minor typo fixes [Bug 1853072]
 
-	* tests/fCmd.test:
-	* unix/tclUnixFCmd.c (TraverseUnixTree): added option to rewind() the
-	readdir() loop whenever the source hierarchy has been modified by
-	traverseProc (e.g. by deleting files); this is required to ensure
-	complete traversal of the source hierarchy on certain filesystems like
-	HFS+. Added test for failing recursive delete on Mac OS X that was due
-	to this. [Bug 1034337]
+	* generic/tclIO.c (TclGetsObjBinary): Operate on topmost channel.
+	[Bug 1869405] (Ficicchia)
 
-	* generic/tclListObj.c (Tcl_ListObjReplace): use memmove() instead of
-	manual copy loop to shift list elements. Decreases time spent in
-	Tcl_ListObjReplace() from 5.2% to 1.7% of overall runtime of tclbench
-	on a ppc 7455 (i.e. 200% speed increase). [Patch 1064243]
+2008-01-17  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclHash.c: hoisted some constant pointer dereferences out of
-	loops to eliminate redundant loads that the gcc optimizer didn't deal
-	with. Decreases time spend in Tcl_FindHashEntry() by 10% over a full
-	run of the tcl testuite on a ppc 7455. [Patch 1064243]
+	* generic/tclCompExpr.c:	Revision to preserve parsed intreps of
+	numeric and boolean literals when compiling expressions with (optimize
+	== 1).
 
-	* tests/fileName.test:
-	* tests/fileSystem.test:
-	* tests/io.test:
-	* tests/tcltest.test: fixed bugs causing failures when running tests
-	with -tmpdir arg not set to working dir.
+2008-01-15  Miguel Sofer  <msofer@users.sf.net>
 
-	* macosx/Makefile: corrected path to html help inside framework.
-	Prevent parallel make from building several targets at the same time.
+	* generic/tclCompExpr.c: Add an 'optimize' argument to
+	* generic/tclCompile.c:  TclCompileExpr() to profit from better
+	* generic/tclCompile.h:  literal management according to usage.
+	* generic/tclExecute.c:
 
-2004-11-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclCompExpr.c: Fix literal leak in exprs [Bug 1869989] (dgp)
+	* generic/tclExecute.c:
+	* tests/compExpr.test:
 
-	* doc/catch.n: Clarify documentation on return codes. [Bug 1062647]
+	* doc/proc.n: Changed wording for access to non-local variables; added
+	mention to [namespace upvar]. Lame attempt at dealing with
+	documentation. [Bug 1872708]
 
-2004-11-02  Don Porter  <dgp@users.sourceforge.net>
+2008-01-15  Miguel Sofer  <msofer@users.sf.net>
 
-	* changes:	Updates for Tcl 8.4.8 release.
+	* generic/tclBasic.c:    Replacing 'operator' by 'op' in the def of
+	* generic/tclCompExpr.c: struct TclOpCmdClientData to accommodate C++
+	* generic/tclCompile.h:  compilers. [Bug 1855644]
 
-2004-11-02  Don Porter  <dgp@users.sourceforge.net>
+2008-01-13  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* library/tcltest/tcltest.tcl:		Corrected some misleading
-	* tests/tcltest.test (tcltest-26.1,2):	displays of ::errorInfo and
-	::errorCode information when the -setup, -body, and/or -cleanup scripts
-	return an unexpected return code.  Thanks to Robert Seeger for the
-	fix. [RFE 1017151]
+	* win/tclWinSerial.c (SerialCloseProc, TclWinOpenSerialChannel): Use
+	critical section for read & write side. [Bug 1353846] (newman)
 
-2004-11-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-01-11  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclExecute.c (TclExecuteByteCode): NaN-equality fix from
-	Miguel Sofer. [Bug 761471]
+	* unix/tclUnixThrd.c (TclpThreadGetStackSize): Restore stack checking
+	functionality in freebsd. [Bug 1850424]
 
-	* doc/CrtChannel.3 (Tcl_GetChannelMode): Add synopsis. [Bug 1058446]
+	* unix/tclUnixThrd.c (TclpThreadGetStackSize): Fix for crash in
+	freebsd. [Bug 1860425]
 
-2004-10-31  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2008-01-10  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCmdIL.c (InfoGlobalsCmd):
-	* tests/info.test (info-8.4): Strip leading global-namespace
-	specifiers from the pattern argument. [Bug 1057461]
+	* generic/tclStringObj.c (Tcl_AppendFormatToObj):  Correct failure to
+	* tests/format.test:	account for big.used == 0 corner case in the
+	%ll(idox) format directives. [Bug 1867855]
 
-2004-10-30  Miguel Sofer <msofer@users.sf.net>
+2008-01-09  George Peter Staplin <georgeps@xmission.com>
 
-	* generic/tclCmdAH.c (Tcl_CatchObjCmd): removed erroneous comment [Bug
-	1029518]
+	* doc/vwait.n: Add a missing be to fix a typo.
 
-2004-10-29  Don Porter  <dgp@users.sourceforge.net>
+2008-01-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* library/tcltest/tcltest.tcl:	Correct reaction to errors in the
-	obsolete processCmdLineArgsHook.	[Bug 1055673]
-	* library/tcltest/pkgIndex.tcl: Bump to tcltest 2.2.7
+	* tools/tcltk-man2html.tcl (make-man-pages): Make man page title use
+	more specific info on lhs to improve tabbed browser view titles.
 
-2004-10-28  Andreas Kupries <andreask@activestate.com>
+2008-01-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclAlloc.c:	    Fixed [Bug 1030548], a threaded debug
-	* generic/tclThreadAlloc.c: build on Windows now works again. Had to
-	* win/tclWinThrd.c:	    touch Unix as well. Basic patch by Kevin,
-	* unix/tclUnixThrd.c:	    with modifications by myself.
+	* doc/binary.n: Fixed documentation bug reported on tcl-core, and
+	reordered documentation to discourage people from using the hex
+	formatter that is hardly ever useful.
 
-2004-10-28  Don Porter  <dgp@users.sourceforge.net>
+2008-01-02  Don Porter	<dgp@users.sourceforge.net>
 
-	* README:		Bumped patch level to 8.4.8 to prepare for
-	* generic/tcl.h:	next patch release.
-	* tools/tcl.wse.in:
-	* unix/configure.in:
+	* generic/tcl.h:	Bump version number to 8.5.1b1 to distinguish
+	* library/init.tcl:	CVS development snapshots from the 8.5.0 and
+	* unix/configure.in:	8.5.1 releases.
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
+	* README
 
-	* unix/configure:	autoconf (2.13)
+	* unix/configure:	autoconf (2.59)
 	* win/configure:
 
-2004-10-28  Kevin B. Kenny  <kennykb@acm.org>
-
-	* generic/tclInt.decls:
-	* unix/tclUnixTime.c (TclpGmtime, TclpLocaltime):
-	* win/tclWinTime.c (TclpGmtime, TclpLocaltime): Changed type
-	signatures of TclpGmtime and TclpLocaltime to accept CONST TclpTime_t
-	throughout, to avoid any possible confusion in pedantic compilers.
-	[Bug 1001319]
-	* generic/tclIntDecls.h:
-	* generic/tclIntPlatDecls.h:  Regenerated.
-
-2004-10-27  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd):	Restored missing line
-	from yesterday's 868489 backport that caused failed alloc's on LP64
-	systems.
-
-	* tests/appendComp.test:	Backport test suite fixes of errors
-	* tests/autoMkindex.test:	revealed by -singleproc 1 -debug 1
-	* tests/exec.test:		options to make test.
-	* tests/execute.test:
-	* tests/interp.test:
-	* tests/io.test:
-	* tests/namespace.test:
-	* tests/regexpComp.test:
-	* tests/stringComp.test:
-	* tests/unixInit.test:
-	* tests/winPipe.test:
-
-2004-10-26  Kevin B. Kenny  <kennykb@acm.org>
+2007-12-31  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Backport a missing bit of the
-						 [Bug 868489] fix.
-	* generic/tclObj.c (SetBooleanFromAny): Backport fix for [Bug 1026125]
-	* tests/format.test (format-19.1): Additional regression test for
-					   [Bug 868489].
+	* doc/dict.n: Clarified meaning of dictionary values following
+	discussion on comp.lang.tcl.
 
-2004-10-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2007-12-26  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/*.n: Backporting of documentation updates.
+	* generic/tclCmdIL.c: More [lsort] data handling streamlines. The
+	function MergeSort is gone, essentially inlined into Tcl_LsortObjCmd.
+	It is not a straight inlining, two loops over all lists elements where
+	merged in the process: the linked list elements are now built and
+	merged into the temporary sublists in the same pass.
 
-2004-10-26  Don Porter  <dgp@users.sourceforge.net>
+2007-12-25  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/subst.test (subst-12.3-5):	More tests for [Bug 1036649]
+	* generic/tclCmdIL.c: More [lsort] data handling streamlines. Extra
+	mem reqs of latest patches removed, restored to previous mem profile.
+	Improved -unique handling, now eliminating repeated elems immediately
+	instead of marking them to avoid reinsertion at the end.
 
-	* tests/compile.test (compile-12.4):	Backport test for [Bug 1001997]
-	* tests/timer.test (timer-10.1):	Backport test for [Bug 1016167]
-	* tests/tcltest.test (tcltest-12.3,4):	Backport setup corrections.
-	* tests/error.test (error-6.3,4,7,9):	Backport of some tests.
-	* tests/basic.test (basic-49.*):
-	* tests/namespace.test (namespace-8.7):
-	* tests/init.test (init-2.8):	Updated to not rely on http package.
+2007-12-23  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclThreadTest.c (ThreadEventProc):	Corrected subtle bug
-	where the returned (char *) from Tcl_GetStringResult(interp) continued
-	to be used without copying or refcounting, while activity on the
-	interp continued.
+	* generic/tclCompCmds.c (TclCompileRegexpCmd):  TCL_REG_NOSUB cannot
+	* tests/regexp.test (regexp-22.2):		be used because it
+	* tests/regexpComp.test:	[Bug 1857126]	disallows backrefs.
 
-2004-10-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2007-12-21  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclUtil.c (TclMatchIsTrivial): Detect degenerate cases of
-	glob matching that let us avoid scanning through hash tables.
-	* generic/tclCmdIL.c (InfoCommandsCmd, InfoGlobalsCmd, InfoProcsCmd):
-	(InfoVarsCmd): Use this to speed up some [info] subcommands.
+	* generic/tclCmdIL.c: Speed patch for lsort [Patch 1856994].
 
-2004-10-08  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-12-21  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/tclWinFile.c (NativeIsExec): correct result of 'file executable'
-	to not be case sensitive. [Bug 954263]
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd, Tcl_LsearchObjCmd): Avoid
+	calling SelectObjFromSublist when there are no sublists.
 
-2004-10-05  Don Porter  <dgp@users.sourceforge.net>
+2007-12-21  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclNamesp.c (Tcl_PopCallFrame): Removed Bug 1038021
-	workaround. That bug is now fixed.
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Preallocate a listObj of
+	sufficient length for the sorted list instead of growing it. Second
+	commit replaces calls to Tcl_ListObjAppenElement with direct access to
+	the internal rep.
 
-2004-09-30  Don Porter  <dgp@users.sourceforge.net>
+2007-12-19  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclNamespace.c (TclTeardownNamespace): Tcl_Obj-ified the
-	* tests/namespace.test (namespace-8.5,6):	save/restore of
-	::errorInfo and ::errorCode during global namespace teardown. Revised
-	the comment to clarify why this is done, and added tests that will
-	fail if this is not done.
+	*** 8.5.0 TAGGED FOR RELEASE ***
 
-	* generic/tclResult.c (TclTransferResult):	Added safety checks so
-	that unexpected undefined ::errorInfo or ::errorCode will not lead to
-	a segfault.
+	* changes:		Updated for 8.5.0 release.
 
-	* generic/tclVar.c (CallVarTraces):	Save/restore the flag values
-	* tests/var.test (var-16.1):	that define part of the interpreter
-	state during variable traces. [Bug 1038021]
+2007-12-19  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-09-30  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclCompCmds.c (TclCompileSwitchCmd):	update switch -regexp
+	* tests/switch.test-14.*:			compilation to pass
+	the cflags to INST_REGEXP (changed on 12-07).  Added tests for
+	switch -regexp compilation (need more). [Bug 1854399]
 
-	* tests/subst.test (12.2): test correction.
+2007-12-18  Don Porter	<dgp@users.sourceforge.net>
 
-2004-09-29  Miguel Sofer <msofer@users.sf.net>
+	* changes:		Updated for 8.5.0 release.
 
-	* generic/tclBasic.c (Tcl_EvalEx):
-	* tests/subst.test (12.1-2): fix for buffer overflow in [subst], [Bug
-	1036649]
-
-2004-09-23  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* unix/dltest/Makefile.in (clean): Fixup make clean rule so that it
-	does not delete all files when SHLIB_SUFFIX is set to the empty string
-	in a static build. [Bug 1016726]
-
-2004-09-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* generic/tclExecute.c (TEBC-INST_LSHIFT,INST_RSHIFT): Ensure that
-	large shifts end up shifting correctly. [Bug 868467]
-
-2004-09-15  Daniel Steffen  <das@users.sourceforge.net>
-
-	* tests/load.test (load-2.3): adopted fix for failure on darwin from
-	HEAD.
-
-2004-09-14  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclObj.c (Tcl_GetIntFromObj):	Corrected flaw in returning
-	the int value of a wideInteger. [Bug 1027690]
-
-2004-09-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
-
-	* generic/tclObj.c (SetIntOrWideFromAny): Rewritten integral value
-	parsing code so that values do not flip so easily between numeric
-	representations. Thanks to KBK for this! [Bug 868489]
-
-	* generic/tclIO.c (Tcl_Seek): Make sure wide seeks do not fail to set
-	::errorCode on error. [Bug 1025359]
-
-2004-09-10  Andreas Kupries  <andreask@activestate.com>
-
-	* generic/tcl.h: Micro formatting fixes.
-	* generic/tclIOGT.c: Channel version fixed, must be 3, to have
-	wideseekProc. Thanks to David Graveraux <davygrvy@pobox.com>.
-
-2004-09-11  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclNamespace.c (TclGetNamespaceForQualName):	Resolved
-	longstanding inconsistency in the treatment of the TCL_NAMESPACE_ONLY
-	flag revealed by testing the 2004-09-09 commits against Itcl.
-	TCL_NAMESPACE_ONLY now acts as specified in the pre-function
-	comment, forcing resolution in the passed in context namespace. It has
-	been incorrectly forcing resolution in the interp's current namespace.
-
-2004-09-10  Miguel Sofer <msofer@users.sf.net>
-
-	* generic/tclExecute.c (INST_CONCAT1): added a peephole optimisation
-	for concatting an empty string. This enables replacing the idiom 'K $x
-	[set x {}]' by '$x[set x {}]' for fastest execution.
-
-2004-09-09  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclNamesp.c (Tcl_ForgetImport): Corrected faulty logic that
-	* tests/namespace.test:	relied exclusively on string matching and
-	failed in the presence of [rename]s. [Bug 560297]
-	Also corrected faulty prevention of [namespace import] cycles. [Bug
-	1017299]
-
-2004-09-08  Kevin B. Kenny  <kennykb@acm.org>
+2007-12-18  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* compat/strftime.c (_conv): Corrected a problem where hour 0 would
-	format as a blank format group with %k.
-	* tests/clock.test (clock-41.1): Added regression test case for %k at
-	the zero hour.
+	* generic/regguts.h, generic/regc_color.c, generic/regc_nfa.c:
+	Fixes for problems created when processing regular expressions that
+	generate very large automata. An enormous number of thanks to Will
+	Drewry <wad_at_google.com>, Tavis Ormandy <taviso_at_google.com>,
+	and Tom Lane <tgl_at_sss.pgh.pa.us> from the Postgresql crowd for
+	their help in tracking these problems down. [Bug 1810264]
 
-2004-09-07  Kevin B. Kenny  <kennykb@acm.org>
+2007-12-17  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclTimer.c: Removed a premature optimisation that attempted
-	to store the assoc data in the client data; the optimisation caused a
-	bug that [after] would overwrite its imports. [Bug 1016167]
+	* changes:		Updated for 8.5.0 release.
 
-2004-09-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2007-12-17  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/lsearch.n: Clarified meaning of -dictionary. [Bug 759545]
+	* generic/tclAlloc.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclThreadAlloc.c: Fix alignment for memory returned by
+	TclStackAlloc; insure that all memory allocators align to 16-byte
+	boundaries on 64 bit platforms [Bug 1851832, 1851524]
 
-2004-09-01  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-12-14  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* win/tclWinReg.c (BroadcastValue): WIN64 cast corrections
+	* generic/tclIOUtil.c (FsAddMountsToGlobResult): fix the tail
+	conversion of vfs mounts. [Bug 1602539]
 
-	* win/tclWinDde.c (DdeClientWindowProc):
-	(DdeServicesOnAck, DdeEnumWindowsCallback): WIN64 corrections
+	* win/README: updated notes
 
-	* win/tclWin32Dll.c (TclWinCPUID): need _asm for WIN64 (Itanium),
-	until we have it, just return unknown. [Bug 1020445]
+2007-12-14  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2004-08-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* tests/winFile.test: Fixed tests for win2k with long machine name
 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Stop [string map] from
-	crashing when its map and input string are the same object.
+2007-12-14  Pat Thoyts <patthoyts@users.sourceforge.net>
 
-2004-08-27  Daniel Steffen  <das@users.sourceforge.net>
+	* win/nmakehlp.c:  Support compilation with MSVC9 for AMD64.
+	* win/makefile.vc:
 
-	* tests/env.test: macosx fixes.
+2007-12-13  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2004-08-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* doc/trace.n: Clarified documentation of enterstep and leavestep
+	traces, including adding example. [Bug 614282, 1701540, 1755984]
 
-	* generic/tclScan.c (Tcl_ScanObjCmd, ValidateFormat): Ensure that the
-	%ld conversion works correctly on 64-bit platforms. [Bug 1011860]
+2007-12-12  Don Porter	<dgp@users.sourceforge.net>
 
-2004-08-16  Miguel Sofer <msofer@users.sf.net>
+	* doc/IntObj.3:	Update docs for the Tcl_GetBignumAndClearObj() ->
+	Tcl_TakeBignumFromObj() revision [TIP 298].  Added docs for the
+	Tcl_InitBignumFromDouble() routine. [Bug 1446971].
 
-	* doc/SetVar.3:
-	* generic/tclTest.c (TestseterrorcodeCmd):
-	* generic/tclVar.c (TclPtrSetVar):
-	* tests/result.test (result-4.*, result-5.*): [Bug 1008314]
-	detected and fixed by dgp.
+	* changes:		Updated for 8.5.0 release.
 
-2004-08-13  Don Porter  <dgp@users.sourceforge.net>
+2007-12-10  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* library/msgcat/msgcat.tcl:	Added checks to prevent [mclocale]
-	* tests/msgcat.test:	from registering filesystem paths to possibly
-	malicious code to be evaluated by a later [mcload].
-	* library/msgcat/pkgIndex.tcl:	Bump to msgcat 1.3.3
+	* generic/tclUtil.c (TclReToGlob): reduce escapes in conversion
+	when not necessary
 
-2004-08-10  Zoran Vasiljevic <vasiljevic@users.sf.net>
+	* generic/tclInt.decls:  move TclByteArrayMatch and TclReToGlob
+	* generic/tclIntDecls.h: to tclInt.h from stubs.
+	* generic/tclStubInit.c: Add flags var to TclByteArrayMatch for
+	* generic/tclInt.h:      future extensibility
+	* generic/tcl.h:  define TCL_MATCH_EXACT doc for Tcl_StringCaseMatch.
+	* doc/StrMatch.3: It is compatible with existing usage.
+	* generic/tclExecute.c (INST_STR_MATCH): flag for TclByteArrayMatch
+	* generic/tclUtil.c (TclByteArrayMatch, TclStringMatchObj):
+	* generic/tclRegexp.c (Tcl_RegExpExecObj):
+	* generic/tclCmdMZ.c (StringMatchCmd): Use TclStringMatchObj
+	* tests/string.test (11.9.* 11.10.*): more tests
 
-	* unix/tclUnixThrd.c (TclpThreadCreate): changed handling of the
-	returned thread ID since broken on 64-bit systems (Cray). Thanks to
-	Rob Ratcliff for reporting the bug.
+2007-12-10  Joe English  <jenglish@users.sourceforge.net>
 
-2004-07-30  Don Porter  <dgp@users.sourceforge.net>
+	* doc/string.n, doc/UniCharIsAlpha.3: Fix markup errors.
+	* doc/CrtCommand.3, doc/CrtMathFnc.3, doc/FileSystem.3,
+	* doc/GetStdChan.3, doc/OpenFileChnl.3, doc/SetChanErr.3,
+	* doc/eval.n, doc/filename.n: Consistency: Move "KEYWORDS" section
+	after "SEE ALSO".
 
-	* generic/tclEvent.c (Tcl_Finalize):	Re-organized Tcl_Finalize so
-	that Tcl_ExitProc's that call Tcl_Finalize recursively do not cause
-	deadlock. [Patch 999084, fixes Tk Bug 714956]
+2007-12-10  Daniel Steffen  <das@users.sourceforge.net>
 
-2004-07-30  Daniel Steffen  <das@users.sourceforge.net>
+	* tools/genStubs.tcl:		fix numerous issues handling 'macosx',
+					'aqua' or 'x11' entries interleaved
+					with 'unix' entries [Bug 1834288]; add
+					genStubs::export command
+					[Tk FR 1716117]; cleanup formatting.
 
-	* unix/configure:
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Darwin: instead of setting PLAT_OBJS
-	to explict object files in tcl.m4, refer to MAC_OSX_OBJS makefile var.
-	* unix/Makefile.in: added MAC_OSX_OBJS variable.
+	* generic/tcl.decls:		use new genstubs 'export' command to
+	* generic/tclInt.decls:		mark exported symbols not in stubs
+	* generic/tclTomMath.decls:	table [Tk FR 1716117]; cleanup
+					formatting.
 
-2004-07-28  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclDecls.h:		regen with new genStubs.tcl.
+	* generic/tclIntDecls.h:	[Bug 1834288]
+	* generic/tclIntPlatDecls.h:
+	* generic/tclPlatDecls.h:
+	* generic/tclStubInit.c:
 
-	* generic/tclMain.c (Tcl_Main, StdinProc):  Append newline only to
-	* tests/basic.test (basic-46.1):	    incomplete scripts as part
-	of multi-line script construction. Do not add an extra trailing
-	newline to the complete script. [Bug 833150]
+2007-12-09  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-07-26  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tests/io.test, tests/chanio.test (io-73.1): Make sure to invalidate
+	* generic/tclIO.c (SetChannelFromAny):        internal rep only after
+	validating channel rep. [Bug 1847044]
 
-	*** 8.4.7 TAGGED FOR RELEASE ***
+2007-12-08  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tests/io.test (io-61.1): create file in binary mode for x-plat.
+	* doc/expr.n, doc/mathop.n: Improved the documentation of the
+	operators. [Bug 1823622]
 
-2004-07-25  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* generic/tclBasic.c (builtInCmds): Corrected list of hidden and
+	* doc/interp.n (SAFE INTERPRETERS): exposed commands so that the
+	documentation and reality now match. [Bug 1662436]
 
-	* generic/tclThreadAlloc.c: Moved the tclInt.h include to provide
-	Tcl_Panic which is now required for non-threaded build.
+2007-12-07  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-07-22  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclExecute.c (TclExecuteByteCode INST_REGEXP):
+	* generic/tclCompCmds.c (TclCompileRegexpCmd): Pass correct RE
+	compile flags at compile time, and use TCL_REG_NOSUB.
 
-	* tests/eofchar.data (removed):	Test io-61.1 now generates its own
-	* tests/io.test:	file of test data as needed.
+	* generic/tclIOCmd.c (FinalizeIOCmdTSD, Tcl_PutsObjCmd): cache
+	stdout channel object for [puts $str] calls.
 
-2004-07-21  Don Porter  <dgp@users.sourceforge.net>
-	* win/tclWinDde.c:		Bump to dde 1.2.3 to cover changes
-	* library/dde/pkgIndex.tcl:	committed on 2004-06-14.
+2007-12-06  Don Porter	<dgp@users.sourceforge.net>
 
-	* changes:	Updated for Tcl 8.4.7 release.
+	* README:	Remove mention of dead comp.lang.tcl.announce
+	newsgroup.  [Bug 1846433].
 
-2004-07-20  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/README:	Mention the stub library created by `make` and warn
+	about the effect of embedded paths in the installed binaries.
+	Thanks to Larry Virden.  [Bug 1794084]
 
-	* generic/tclEvent.c:	    Correct threaded obj allocator to
-	* generic/tclInt.h:	    fully cleanup on exit and allow for
-	* generic/tclThreadAlloc.c: reinitialization. [Bug 736426]
-	* unix/tclUnixThrd.c:	    (mistachkin, kenny)
-	* win/tclWinThrd.c:
+	* doc/AddErrInfo.3:	Documentation for the new routines in TIP 270.
+	* doc/Interp.3:
+	* doc/StringObj.3:
 
-2004-07-20  Daniel Steffen  <das@users.sourceforge.net>
+2007-12-06  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tcl.m4: fixed Darwin autoconf breakage caused by recent CFLAGS
-	reordering.
-	* unix/configure: regen
+	* doc/namespace.n:	Documentation for zero-argument form of
+	[namespace import] (TIP 261) [Bug 1596416]
 
-	* unix/tclConfig.sh.in: replaced EXTRA_CFLAGS with CFLAGS.
-	* unix/dltest/Makefile.in: replaced EXTRA_CFLAGS with DEFS.
+2007-12-06  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* macosx/tclMacOSXBundle.c: dynamically acquire address for
-	CFBundleOpenBundleResourceMap symbol, since it is only present in
-	full CoreFoundation on Mac OS X and not in CFLite on pure Darwin.
+	* generic/tclInt.h: add TclGetChannelFromObj decl
+	(TclMatchIsTrivial): simplify TclMatchIsTrivial to remove ] check.
 
-2004-07-19  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-12-06  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* unix/Makefile.in, unix/tcl.m4:     move (C|LD)FLAGS after their
-	* unix/configure.in, unix/configure: _DEFAULT to allow for env setting
-	to override m4 switches.
-	Consolidate header checks to limit redundancy in configure.
-	(CFLAGS_WARNING): Remove -Wconversion, add -fno-strict-aliasing for
-	gcc builds (need to suppress 3.x type puning warnings).
-	(SC_ENABLE_THREADS): Set m4 to force threaded build when built against
-	a threaded Tcl core.
-	Reorder configure.in for better 64-bit build configuration, replacing
-	EXTRA_CFLAGS with CFLAGS. [Bug 874058]
 
-2004-07-19  Zoran Vasiljevic <vasiljevic@users.sf.net>
+	* generic/tclBasic.c (Tcl_CreateInterp): Simplify the setting up of
+	* generic/tclIOCmd.c (TclInitChanCmd):	 the [chan] ensemble. This
+	* library/init.tcl:			 gets rid of quite a bit of
+	code and makes it possible to understand the whole with less effort.
 
-	* win/tclwinThrd.c: redefined MASTER_LOCK to call TclpMasterLock.
-	Fixes [Bug 987967]
+	* generic/tclCompCmds.c (TclCompileEnsemble): Ensure that the right
+	number of tokens are copied. [Bug 1845320]
 
-2004-07-16  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclNamesp.c (TclMakeEnsemble): Added missing release of a
+	DString. [Bug 1845397]
 
-	* generic/tclIOCmd.c (Tcl_FcopyObjCmd): Corrected a typo in the
-	generation of error messages and simplified by reusing data in a
-	variable instead of retrieving the string again. Fixes [Bug 835289]
+2007-12-05  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* doc/OpenFileChnl.3: Added description of the behaviour of
-	Tcl_ReadChars when its 'charsToRead' argument is set to -1. Fixes [Bug
-	934511]
+	* generic/tclIO.h:    Create Tcl_Obj for Tcl channels to reduce
+	* generic/tclIO.c:    overhead in lookup by Tcl_GetChannel.  New
+	* generic/tclIOCmd.c: TclGetChannelFromObj for internal use.
+	* generic/tclIO.c (WriteBytes, WriteChars): add opt check to avoid
+	EOL translation when not linebuffered or using lf. [Bug 1845092]
 
-	* doc/CrtCommand.3: Added note that the arguments given to the command
-	proc of a Tcl_CreateCommand are in utf8 since Tcl 8.1. Closing [Patch
-	414778]
+2007-12-05  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/ChnlStack.3: Removed the declaration that the interp argument to
-	Tcl_(un)StackChannel can be NULL. This fixes [Bug 881220], reported by
-	Marco Maggi <marcomaggi@users.sourceforge.net>.
+	* tests/stack.test: made the tests for stack overflow not care
+	about which mechanism caused the error (interp's recursion limit
+	or C-stack depth detector).
 
-	* tests/socket.test: Accepted two new testcases by Stuart Casoff
-	<stwo@users.sourceforge.net> checking that -server and -async don't go
-	together [Bug 796534]
+2007-12-05  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* unix/tclUnixNotfy.c (NotifierThreadProc): Accepted Joe Mistachkin's
-	patch for [Bug 990500], properly closing the notifier thread when its
-	exits.
+	* win/configure, win/tcl.m4 (LIBS_GUI): mingw needs -lole32
+	-loleaut32 but not msvc for Tk's [send]. [Bug 1844749]
 
-2004-07-15  Andreas Kupries  <andreask@activestate.com>
+2007-12-05  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* unix/tclUnixThrd.c (TclpFinalizeMutex): Accepted Joe Mistachkin's
-	patch for [Bug 990453], closing leakage of mutexes. They were not
-	destroyed properly upon finalization.
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Prevent shimmering crash
+	when -exact and -integer/-real are mixed. [Bug 1844789]
 
-2004-07-15  Zoran Vasiljevic <vasiljevic@users.sf.net>
+2007-12-03  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclEvent.c (NewThreadProc): Backout of changes to fix [Bug
-	770053]. See SF bugreport for more info.
+	* unix/tclUnixChan.c (CreateSocketAddress): Add extra #ifdef-fery to
+	make code compile on BSD 5. [Bug 1618235, again]
 
-	* generic/tclNotify.c (TclFinalizeNotifier): Added conditional
-	notifier finalization based on the fact that an TclInitNotifier has
-	been called for the current thread. This fixes [Bug 770053] again.
-	Hopefully this time w/o unwanted side-effects.
+2007-12-03  Don Porter	<dgp@users.sourceforge.net>
 
-2004-07-14  Andreas Kupries  <andreask@activestate.com>
+	* library/tcltest/tcltest.tcl:	Bump tcltest to version 2.3.0 so that
+	* library/tcltest/pkgIndex.tcl: we release a stable tcltest with a
+	* unix/Makefile.in:	stable Tcl.
+	* win/Makefile.in:
 
-	* generic/tclIO.h (CHANNEL_INCLOSE):	   New flag. Set in Tcl_Close
-	* generic/tclIO.c (Tcl_UnregisterChannel): while the close callbacks
-	* generic/tclIO.c (Tcl_Close):		   are run. Checked in
-	Tcl_Close and Tcl_Unregister to prevent recursive call of [close] in
-	the close-callbacks. This is a possible error made by implementors of
-	virtual filesystems based on 'tclvfs', thinking that they have to
-	close the channel in the close handler for the filesystem.
+2007-12-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-07-14  Andreas Kupries  <andreask@activestate.com>
+	* win/configure, win/tcl.m4 (LIBS_GUI): remove ole32.lib oleaut32.lib
 
-	* generic/tclIO.c:
-	* generic/tclIO.h:
-	Not reverting, but #ifdef'ing the changes from May 19, 2004 out of the
-	core. This removes the ***POTENTIAL INCOMPATIBILITY*** for channel
-	drivers it introduced. This has become possible due to Expect gaining
-	a BlockModeProc and now handling blockingg and non-blocking modes
-	correctly. Thus [Bug 943274] is still fixed if a recent enough version
-	of Expect is used.
+2007-12-03  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* doc/CrtChannel.3: Added warning about usage of a channel without a
-	BlockModeProc.
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Adjusted the [switch]
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd):       command so that when
+	passed two arguments, no check for options are performed. This is OK
+	since in the two-arg case, detecting an option would definitely lead
+	to a syntax error. [Patch 1836519]
 
-2004-07-15  Andreas Kupries  <andreask@pliers.activestate.com>
+2007-11-29  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclIOCmd.c (Tcl_PutsObjCmd): Added length check to the old
-	depreceated newline syntax, to ensure that only "nonewline" is
-	accepted. [Bug 985869] (mistachkin)
+	* win/makefile.vc: add ws2_32.lib to baselibs
+	* win/configure, win/tcl.m4: add ws2_32.lib / -lws2_32 to build.
+	* win/tclWinSock.c: remove dyn loading of winsock, assume that it is
+	always available now.
 
-2004-07-13  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-11-29  Don Porter	<dgp@users.sourceforge.net>
 
-	* README, generic/tcl.h, tools/tcl.wse.in:	      bumped to
-	* unix/configure, unix/configure.in, unix/tcl.spec:   patchlevel
-	* win/README.binary, win/configure, win/configure.in: 8.4.7
+	* generic/tclWinSock.c (InitializeHostName):	Correct error in
+	buffer length tracking. After gethostname() writes into a buffer,
+	convert only the written string to internal encoding, not the whole
+	buffer.
 
-2004-07-13  Zoran Vasiljevic <vasiljevic@users.sf.net>
+2007-11-28  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclEvent.c (NewThreadProc): Fixed broken build on Windows
-	caused by missing TCL_THREAD_CREATE_RETURN. This is backported from
-	HEAD. Thnx to Kevin Kenny for spotting this.
+	* generic/tclConfig.c:	Corrected failure of the [::foo::pkgconfig]
+	command to clean up registered configuration data when the query
+	command is deleted from the interp. [Bug 983501]
 
-2004-07-03  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclNamesp.c (Tcl_SetEnsembleMappingDict):	Added checks
+	that the dict value passed in is in the format required to make the
+	internals of ensembles work. [Bug 1436096]
 
-	* generic/tclExecute.c (ExprRoundFunc):
-	* tests/expr-old.test (39.1): added support for wide integers to
-	round(); [Bug 908375], reported by Hemang Lavana.
+	* generic/tclIO.c:	Simplify test and improve accuracy of error
+	message in latest changes.
 
-2004-07-02  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-11-28  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* generic/regcomp.c (stid): correct minor pointer size error
+	* generic/tclIO.c: -eofchar must support no eofchar.
 
-	* generic/tclPipe.c (TclCreatePipeline): Add 2>@1 as a special
-	* tests/exec.test: case redir of stderr to the result output.
+2007-11-27  Miguel Sofer  <msofer@users.sf.net>
 
-2004-07-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclBasic.c: remove unneeded call in Tcl_CreateInterp, add
+	comments.
 
-	* tests/fileSystem.test: new tests backported
-	* win/tclWin32Dll.c: compilation fix for VC++5.2
+2007-11-27  Don Porter	<dgp@users.sourceforge.net>
 
-2004-06-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* win/tclWinSock.c:	Add mising encoding conversion of the [info
+	hostname] value from the system encoding to Tcl's internal encoding.
 
-	* library/safe.tcl: Make sure that the temporary variable is
-	local to the namespace and not inadvertently global. [Bug 981733]
+	* doc/chan.n:		"Fix" the limitation on channel -eofchar
+	* doc/fconfigure.n:	values to single byte characters by documenting
+	* generic/tclIO.c:	it and making it fail loudly. Thanks to Stuart
+	* tests/chan.test:	Cassoff for contributing the fix. [Bug 800753]
 
-2004-06-22  Zoran Vasiljevic <vasiljevic@users.sf.net>
+2007-11-26  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclEvent.c:
+	* generic/tclBasic.c:
 	* generic/tclInt.h:
-	* unix/tclUnixNotfy.c:
-	* unix/tclUnixThrd.c:
-	* win/tclWinThrd.c: See bug report for more information about what it
-	does. [Bug 770053]
-
-	* tests/unixNotfy.test: rewritten to use tcltest::threadReap to
-	gracefully wait for the test thread to exit. Otherwise we got a race
-	condition with main thread exiting before the test thread. This
-	exposed the long-standing Tcl lib issue with resource
-	garbage-collection on application exit.
-
-2004-06-21  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/tclWin32Dll.c (DllMain, _except_dllmain_detach_handler)
-	(TclpCheckStackSpace, _except_checkstackspace_handler, TclWinCPUID)
-	(_except_TclWinCPUID_detach_handler):
-	* win/tclWinChan.c (Tcl_MakeFileChannel)
-	(_except_makefilechannel_handler):
-	* win/tclWinFCmd.c (DoRenameFile, _except_dorenamefile_handler)
-	(DoCopyFile, _except_docopyfile_handler):
-	Rework pushing of exception handler function pointer so that compiling
-	with gcc -O3 works. Remove empty function call to avoid compiler
-	warning. Mark the DllMain function as noinline to avoid compiler error
-	from duplicated asm labels in generated code.
-
-2004-06-14  Pat Thoyts  <patthoyts@users.sourceforge.net>
-
-	* tests/winDde.test: Fixed -async test
-	* win/tclWinDde.c: Backported the fix from 8.5 to avoid hanging in the
-	presence of applications that do not process Window messages.
-
-2004-06-10  Andreas Kupries  <andreask@activestate.com>
-
-	* generic/tclDecls.h:	     Regenerated on a unix box. The Win/DOS
-	* generic/tclIntDecls.h:     EOLs from the last regen screwed up
-	* generic/tclIntPlatDecls.h: compilation with an older gcc.
-	* generic/tclPlatDecls.h:
-	* generic/tclStubInit.c:
-
-2004-06-10  Zoran Vasiljevic <vasiljevic@users.sf.net>
-
-	* generic/tclIOUtil.c: partially corrected [Bug 932314]. Also,
-	corrected return values of Tcl_FSChdir() to reflect those of the
-	underlying platform-specific call. Originally, return codes were mixed
-	with those of Tcl.
-
-2004-06-08  Miguel Sofer <msofer@users.sf.net>
-
-	* generic/tclCompile.c: handle warning [Bug 969066]
-
-2004-06-05  Kevin B. Kenny  <kennykb@acm.org>
-
-	* generic/tcl.h: Corrected Tcl_WideInt declarations so that the mingw
-	build works again.
-	* generic/tclDecls.h:			Changes to the tests for
-	* generic/tclInt.decls:			clock frequency in Tcl_WinTime
-	* generic/tclIntDecls.h:		so that any clock frequency is
-	* generic/tclIntPlatDecls.h:		accepted provided that all
-	* generic/tclPlatDecls.h:		CPU's in the system share a
-	* generic/tclStubInit.c:		common chip, and hence,
-	* tests/platform.test (platform-1.3):	presumably, a common clock.
-	* win/tclWin32Dll.c (TclWinCPUID):	This change necessitated a
-	* win/tclWinTest.c (TestwincpuidCmd)	small burst of assembly code
-	* win/tclWinTime.c (Tcl_GetTime):	to read CPU ID information,
-	which was added as TclWinCPUID in the internal Stubs. To test this
-	code in the common case of a single-processor machine, a
-	'testwincpuid' command was added to tclWinTest.c, and a test case in
-	platform.test. Thanks to Jeff Godfrey and Richard Suchenwirth for
-	reporting this bug. [Bug 976722]
-
-2004-05-27  Kevin B. Kenny  <kennykb@acm.org>
-
-	* tests/clock.test: Added a single test for the presence of %G in
-	[clock format], and conditioned out the clock-10.x series if they're
-	all going to fail because of a broken strftime() call. [Bug 961714]
-
-2004-05-27  Reinhard Max  <max@suse.de>
-
-	* generic/tclEncoding.c:
-	* tests/encoding.test: added support and tests for translating
-	embedded null characters between real nullbytes and the internal
-	representation on input/output. [Bug 949905]
-
-2004-05-26  Don Porter  <dgp@users.sourceforge.net>
-
-	* library/tcltest/tcltest.tcl:	Correction to debug prints and testing
-	* library/tcltest/pkgIndex.tcl:	if TCLTEST_OPTIONS value. Corrected
-	* tests/tcltest.test:		double increment of numTestFiles in
-	-singleproc 1 configurations. Updated tcltest-19.1 to tcltest 2.1
-	behavior. Corrected tcltest-25.3 to not falsely report a failure in
-	tcltest.test. Bumped to tcltest 2.2.6. [Bugs 960560, 960926]
-
-2004-05-25  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* doc/http.n (http::config): add -urlencoding option (default utf-8)
-	* library/http/http.tcl:     that specifies encoding conversion of
-	* library/http/pkgIndex.tcl: args for http::formatQuery.  Previously
-	* tests/http.test:	     undefined, RFC 2718 says it should be
-	utf-8. 'http::config -urlencoding {}' returns previous behavior,
-	which will throw errors processing non-latin-1 chars. Bumped http
-	package to 2.5.0.
-
-2004-05-25  Kevin Kenny  <kennykb@acm.org>
-
-	* tests/winFCmd.test: Correct test for the presence of a CD-ROM so
-	that it doesn't misdetect some other sort of filesystem with a
-	write-protected root as being a CD-ROM drive. [Bug 918267]
-
-2004-05-24  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/tclUnixInit.c:
+	* unix/tclUnixThrd.c: Fix stack checking via workaround for bug in
+	glibc's pthread_attr_get_np, patch from [Bug 1815573]. Many thanks to
+	Sergei Golovan (aka Teo) for detecting the bug and helping diagnose
+	and develop the fix.
 
-	* generic/tclExecute.c (VerifyExprObjType): use GET_WIDE_OR_INT to
-	properly have tclIntType used for smaller values. This corrects TclX
-	bug 896727 and any other 3rd party extension that created math
-	functions but was not yet WIDE_INT aware in them.
+2007-11-24  Donal K. Fellows  <dkf@users.sf.net>
 
-2004-05-24  Miguel Sofer  <msofer@users.sf.net>
+	* generic/tclCompCmds.c (TclCompileDictAppendCmd): Fix bug in [dict
+	append] compiler which caused strange stack corruption. [Bug 1837392]
 
-	* doc/set.n: accurate description of name resolution process,
-	referring to namespace.n for details [Bug 959180]
+2007-11-23  Andreas Kupries  <andreask@activestate.com>
 
-2004-05-22  Miguel Sofer  <msofer@users.sf.net>
+	* generic/tclIORChan.c: Fixed a problem with reflected channels. 'chan
+	postevent' is defined to work only from within the interpreter
+	containing the handler command. Sensible, we want only handler
+	commands to use it. It identifies the channel by handle. The channel
+	moves to a different interpreter or thread. The interpreter containing
+	the handler command doesn't know the channel any longer. 'chan
+	postevent' fails, not finding the channel any longer. Uhm.
 
-	* generic/tclVar.c (TclObjUnsetVar2): backported fix [Bug 735335] and
-	new (in tcl8.4) exteriorisations of [Bug 736729] due to the use of
-	tclNsVarNameType obj types. The consequences of [Bug 736729] should be
-	the same as in tcl8.3 and previous versions. The use of
-	tclNsVarNameType objs is still disabled, pending a decision by the
-	release manager.
+	Fixed by creating a second per-interpreter channel table, just for
+	reflected channels, where each interpreter remembers for which
+	reflected channels it has the handler command. This info does not move
+	with the channel itself. The table is updated by 'chan create', and
+	used by 'chan postevent'.
 
-2004-05-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* tests/ioCmd.test: Updated the testsuite.
 
-	* win/tclWinFile.c (TclpMatchInDirectory): fix for an issue where
-	there was a sneak path from Tcl_DStringFree to SetErrorCode(0). The
-	result was that the error code could be reset between a call to
-	FindFirstFile and the check of its status return, leading to a bizarre
-	error return of {POSIX unknown {No error}}. (Found in unplanned test -
-	no incident logged at SourceForge.)
+2007-11-23  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-05-19  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclVar.c (Tcl_ArrayObjCmd): handle the right data for
+	* tests/var.test (var-14.2):          [array names $var -glob $ptn]
 
-	* generic/tclIO.c: Fixed [SF Tcl Bug 943274]. This is the same problem
-	* generic/tclIO.h: as [SF Tcl Bug 462317], see ChangeLog entry
-	2001-09-26. The fix done at that time is incomplete. It is possible to
-	get around it if the actual read operation is defered and not executed
-	in the event handler itself. Instead of tracking if we are in an read
-	caused by a synthesized fileevent we now track if the OS has delivered
-	a true event = actual data and bypass the driver if a read finds that
-	there is no actual data waiting. The flag is cleared by a short or
-	full read. [[this bug amended 2004-07-14]]
+2007-11-23  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2004-05-18  Kevin B. Kenny  <kennykb@acm.org>
+	* generic/tclCmdMZ.c (String*Cmd, TclInitStringCmd): Rebuilt [string]
+	* generic/tclCompCmds.c (TclCompileString*Cmd): as an ensemble.
 
-	* compat/strftime.c (_fmt, ISO8601Week):
-	* doc/clock.n:
-	* tests/clock.test: Major rework to the handling of ISO8601 week
-	numbers. Now passes all the %G and %V test cases on Windows, Linux and
-	Solaris [Bugs 500285, 500389, and 852944]
+2007-11-22  Donal K. Fellows  <dkf@users.sf.net>
 
-2004-05-17  Kevin B. Kenny  <kennykb.@acm.org>
+	* generic/tclDictObj.c (Dict*Cmd,TclInitDictCmd): Rebuilt the [dict]
+	* generic/tclCompCmds.c (TclCompileDict*Cmd): command as an ensemble.
 
-	* generic/tclInt.decls:	     Restored TclpTime_t kludge to all places
-	* generic/tclIntPlatDecls.h: where it appeared before the changes of
-	* unix/tclUnixPort.h	     14 May, because use of native time_t in
-	* unix/tclUnixTime.h	     its place requires the 8.5 header
-	* win/tclWinTime.h:	     reforms. [Bug 955146]
+2007-11-22  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2004-05-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Rewrote the [string] and
+	* generic/tclDictObj.c (Tcl_DictObjCmd): [dict] implementations to be
+	ready for conversion to ensembles.
 
-	* doc/OpenFileChnl.3: Documented type of 'offset' argument to Tcl_Seek
-	was wrong. [Bug 953374]
+	* tests/string.test (string-12.22): Flag shimmering bug found in
+	[string range].
 
-2004-05-14  Kevin B. Kenny  <kennykb@acm.org>
+2007-11-21  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclInt.decls:	     Promoted TclpLocaltime and TclpGmtime
-	* generic/tclIntDecls.h:     from Unix-specific stubs to the generic
-	* generic/tclIntPlatDecls.h: internal Stubs table. Reran 'genstubs'
-	* generic/tclStubInit.c:
-	* unix/tclUnixPort.h:
+	* generic/tclCompCmds.c (TclCompileEnsemble): Rewrote the ensemble
+	compiler to remove many of the limitations. Can now compile scripts
+	that use unique prefixes of subcommands, and which have mappings of a
+	command to multiple words (provided the first is a compilable command
+	of course).
 
-	* generic/tclClock.c: Changed a buggy 'GMT' timezone specification to
-			      the correct 'GMT0'. [Bug 922848]
+2007-11-21  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* unix/tclUnixThrd.c: Moved TclpGmtime and TclpLocaltime to
-			      unix/tclUnixTime.c where they belong.
+	* generic/tclNamesp.c (TclMakeEnsemble): Factor out the code to set up
+	a core ensemble from a table of information about subcommands, ready
+	for reuse within the core.
 
-	* unix/tclUnixTime.c (TclpGmtime, TclpLocaltime, TclpGetTimeZone,
-	(ThreadSafeGMTime[removed], ThreadSafeLocalTime[removed],
-	(SetTZIfNecessary, CleanupMemory): Restructured to make sure that the
-	same mutex protects all calls to localtime, gmtime, and tzset. Added a
-	check in front of those calls to make sure that the TZ env var hasn't
-	changed since the last call to tzset, and repeat tzset if necessary.
-	[Bug 940278] Removed a buggy test of the Daylight Saving Time
-	information in 'gettimeofday' in favor of applying 'localtime' to a
-	known value. [Bug 922848]
+	* generic/various: Start to return more useful Error codes, currently
+	mainly on assorted lookup failures.
 
-	* tests/clock.test (clock-3.14): Added test to make sure that changes
-	to $env(TZ) take effect immediately.
+2007-11-20  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/tclWinTime.c (TclpLocaltime, TclpGmtime): Added porting layer
-	for 'localtime' and 'gmtime' calls.
+	* generic/tclDictObj.c: Changed the underlying implementation of the
+	hash table used in dictionaries to additionally keep all entries in
+	the hash table in a linked list, which is only ever added to at the
+	end. This makes iteration over all entries in the dictionary in
+	key insertion order a trivial operation, and so cleans up a great deal
+	of complexity relating to dictionary representation and stability of
+	iteration order.
 
-2004-05-10  David Gravereaux <davygrvy@pobox.com>
+	***POTENTIAL INCOMPATIBILITY***
+	For any code that depended on the (strange) old iteration order.
 
-	* win/tclWinPipe.c (BuildCommandLine): Append a space when the path
-	got primed.
-	(TclpCreateProcess): When under NT, with no console, and executing a
-	DOS application, the path priming does not need an ending space as
-	BuildCommandLine() will append one for us.
+	* generic/tclConfig.c (QueryConfigObjCmd): Correct usage of
+	Tcl_WrongNumArgs.
 
-2004-05-07  Miguel Sofer <msofer@users.sf.net>
+2007-11-19  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/unset.n: added upvar.n to the "see also" list
+	*** 8.5b3 TAGGED FOR RELEASE ***
 
-2004-05-05  David Gravereaux <davygrvy@pobox.com>
+	* README:		Bump version number to 8.5b3.
+	* generic/tcl.h:
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* generic/tclEvent.c: TclSetLibraryPath's use of caching the stringrep
-	of the pathPtr object to TclGetLibraryPath called from another thread
-	was ineffective if the original's stringrep had been invalidated as
-	what happens when it gets muted to a list.
+	* unix/configure:	autoconf (2.59)
+	* win/configure:
 
-	* generic/tclEncoding.c: Added FreeEncoding(systemEncoding) in
-	TclFinalizeEncodingSubsystem because its ref count was incremented in
-	TclInitEncodingSubsystem.
+	* changes:		Updated for 8.5b3 release.
 
-	* win/tclWin32Dll.c: Structured Exception Handling added around
-	Tcl_Finalize called from DllMain's DLL_PROCESS_DETACH. We can't be
-	100% assured that Tcl is being unloaded by the OS in a stable
-	condition and we need to protect the exit handlers should the stack be
-	in a hosed state. AT&T style assembly for SEH under MinGW included,
-	too. [Patch 858493]
+2007-11-19  Kevin Kenny  <kennykb@users.sourceforge.net>
 
-	Also added DisableThreadLibraryCalls() for the DLL_PROCESS_ATTACH
-	case. We're not interested in knowing about DLL_THREAD_ATTACH, so
-	disable the notices.
+	* library/tzdata/Africa/Cairo:
+	* library/tzdata/America/Campo_Grande:
+	* library/tzdata/America/Caracas:
+	* library/tzdata/America/Cuiaba:
+	* library/tzdata/America/Havana:
+	* library/tzdata/America/Sao_Paulo:
+	* library/tzdata/Asia/Damascus:
+	* library/tzdata/Asia/Gaza:
+	* library/tzdata/Asia/Tehran:  Olson's tzdata2007i imported.
 
-	* generic/tclInt.h:
-	* generic/tclThread.c:
-	* generic/tclEvent.c:
-	* unix/tclUnixThrd.c:
-	* win/tclWinThrd.c:  Provisions made so masterLock, initLock,
-	allocLock and joinLock mutexes can be recovered during Tcl_Finalize.
+2007-11-18  Daniel Steffen  <das@users.sourceforge.net>
 
-	* win/tclWinSock.c:
-	(SocketThreadExitHandler): Don't call TerminateThread when
-	WaitForSingleObject returns a timeout. Tcl_Finalize called from
-	DllMain will pause all threads. Trust that the thread will get the
-	close notice at a later time if it does ever wake up before being
-	cleaned up by the system anyway.
-	(SocketEventProc): connect errors should fire both the readable and
-	writable handlers because this is how it works on UNIX. [Bug 794839]
+	* generic/tclExecute.c (TclExecuteByteCode:INST_EXIST_*): Fix read
+	traces not firing on non-existent array elements. [Bug 1833522]
 
-	* win/coffbase.txt: Added the tls extension to the list of preferred
-	load addresses.
+2007-11-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-2004-05-05  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdIL.c (TclInitInfoCmd): Rename the implementation
+	commands for [info] to be something more "expected".
 
-	* tests/unixInit.test (unixInit-2.10): Test correction for Mac OSX.
-	Be sure to consistently compare normalized path names. Thanks to
-	Steven Abner (tauvan). [Bug 948177]
+	* generic/tclCompCmds.c (TclCompileInfoExistsCmd): Compiler for the
+	[info exists] subcommand.
+	(TclCompileEnsemble): Cleaned up version of ensemble compiler that was
+	in TclCompileInfoCmd, but which is now much more generally applicable.
 
-2004-05-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclInt.h (ENSEMBLE_COMPILE): Added flag to allow for cleaner
+	turning on and off of ensemble bytecode compilation.
 
-	* doc/CrtObjCmd.3: Remove reference to Tcl_RenameCommand; there is no
-	such API. [Bug 848440]
+	* generic/tclCompile.c (TclCompileScript): Add the cmdPtr to the list
+	of arguments passed to command compilers.
 
-2004-05-04  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-11-15  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclIOUtil.c (Tcl_FSChdir):  Work-around crash condition
-	* tests/winFCmd.test (winFCmd-16.12): triggered when $HOME is
-	volumerelative (ie 'C:').
+	* generic/regc_nfa.c:	Fixed infinite loop in the regexp compiler.
+	[Bug 1810038]
 
-	* tests/fileName.test (filename-12.9): use C:/ instead of the first
-	item in file volumes - that's usually A:/, which for most will have
-	nothing in it.
+	* generic/regc_nfa.c:	Corrected looping logic in fixempties() to
+	avoid wasting time walking a list of dead states. [Bug 1832612]
 
-2004-05-04  Don Porter  <dgp@users.sourceforge.net>
+2007-11-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* tests/tcltest.test: Test corrections for Mac OSX.  Thanks to Steven
-	Abner (tauvan). [Bug 947440]
+	* generic/tclNamesp.c (NamespaceEnsembleCmd): Must pass a non-NULL
+	interp to Tcl_SetEnsemble* functions.
 
-2004-05-03  Andreas Kupries  <andreask@activestate.com>
+	* doc/re_syntax.n: Try to make this easier to read. It's still a very
+	difficult manual page!
 
-	Applied [SF Tcl Patch 868853], fixing a mem leak in TtySetOptionProc.
-	Report and Patch provided by Stuart Cassoff <stwo@users.sf.net>.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Allow people to turn off the -rpath
+	option to their linker if they so desire. This is a configuration only
+	recommended for (some) vendors. Relates to [Patch 1231022].
 
-2004-05-03  Kevin Kenny  <kennykb@acm.org>
+2007-11-15  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* win/tclWin32Dll.c (TclpCheckStackSpace):
-	* tests/stack.test (stack-3.1): Fix for undetected stack overflow in
-	TclReExec on Windows. [Bug 947070]
+	* win/tclWin32Dll.c: Prefer UINT_PTR to DWORD_PTR when casting pointers
+	to integer types for greater portability. [Bug 1831253]
 
-2004-05-03  Don Porter  <dgp@users.sourceforge.net>
+2007-11-15  Daniel Steffen  <das@users.sourceforge.net>
 
-	* library/init.tcl:	Corrected unique prefix matching of
-	interactive command completion in [unknown]. [Bug 946952]
+	* macosx/Tcl.xcodeproj/project.pbxproj: add new chanio.test.
+	* macosx/Tcl.xcode/project.pbxproj:
 
-2004-05-02  Miguel Sofer <msofer@users.sf.net>
+2007-11-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclProc.c (TclObjInvokeProc):
-	* tests/proc.test (proc-3.6): fix for bad quoting of multi-word proc
-	names in error messages [Bug 942757]
+	* generic/tclCompile.c (TclCompileScript): Ensure that we get our count
+	in our INST_START_CMD calls right, even when there's a failure to
+	compile a command directly.
 
-2004-04-23  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclNamesp.c (Tcl_SetEnsembleSubcommandList)
+	(Tcl_SetEnsembleMappingDict):		Special code to make sure that
+	* generic/tclCmdIL.c (TclInitInfoCmd):	[info exists] is compiled right
+	while not allowing changes to the ensemble to cause havok.
 
-	* generic/tclIO.c (Tcl_SetChannelOption): Fixed [Bug 930851]. When
-	changing the eofchar we have to zap the related flags to prevent them
-	from prematurely aborting the next read.
+	* generic/tclCompCmds.c (TclCompileInfoCmd): Simple compiler for the
+	[info] command that only handles [info exists].
 
-2004-04-07  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c (TclExecuteByteCode:INST_EXIST_*): New
+	instructions to allow the testing of whether a variable exists.
 
-	* win/configure:
-	* win/configure.in: define TCL_LIB_FLAG, TCL_BUILD_LIB_SPEC,
-	TCL_LIB_SPEC and TCL_PACKAGE_PATH in tclConfig.sh.
+2007-11-14  Andreas Kupries  <andreask@activestate.com>
 
-2004-04-06  Don Porter  <dgp@users.sourceforge.net>
+	* tests/chanio.test: New file. This is essentially a duplicate of
+	'io.test', with all channel commands converted to their 'chan xxx'
+	notation.
+	* tests/io.test: Fixed typo in test description.
 
-	* tests/unixInit.test (unixInit-3.1):	Default encoding on Darwin
-	systems is utf-8. Thanks to Steven Abner (tauvan). [Bug 928808]
+2007-11-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-2004-04-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/regc*.c: Eliminate multi-char collating element code
+	completely. Simplifies the code quite a bit. If people still want the
+	full code, it will remain on the 8.4 branch. [Bug 1831425]
 
-	* tests/cmdAH.test (cmdAH-18.2): Added constraint because
-	access(...,X_OK) is defined to be permitted to be meaningless when
-	running as root, and OSX exhibits this. [Bug 929892]
+2007-11-13  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-04-02  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompCmds.c (TclCompileRegexpCmd): clean up comments, only
+	free dstring on OK from TclReToGlob.
+	(TclCompileSwitchCmd): simplify TclReToGlob usage.
 
-	* tests/tcltest.test: Corrected constraint typos: "nonRoot" ->
-	"notRoot". Thanks to Steven Abner (tauvan). [Bug 928353]
+2007-11-14  Donal K. Fellows  <dkf@users.sf.net>
 
-2004-03-31  Don Porter  <dgp@users.sourceforge.net>
+	* generic/regc*.c: #ifdef/comment out the code that deals with
+	multi-character collating elements, which have never been supported.
+	Cuts the memory consumption of the RE compiler. [Bug 1831425]
 
-	* doc/msgcat.n: Clarified message catalog file encodings. [Bug 811457]
-	* library/msgcat/msgcat.tcl ([mcset], [ConvertLocale], [Init]):
-	Corrected [mcset] to be able to successfully set a translation to
-	the empty string. [mcset $loc $src {}] was incorrectly set the $loc
-	translation of $src back to $src. Also changed [ConvertLocale] to
-	minimally require a non-empty "language" part in the locale value. If
-	not, an error raised prompts [Init] to keep looking for a valid locale
-	value, or ultimately fall back on the "C" locale. [Bug 811461]
-	* library/msgcat/pkgIndex.tcl:	Bump to msgcat 1.3.2.
+2007-11-13  Donal K. Fellows  <dkf@users.sf.net>
 
-2004-03-31  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclCompCmds.c (TclCompileSwitchCmd, TclCompileRegexpCmd):
+	Extend [switch] compiler to handle regular expressions as long as
+	things are not too complex. Fix [regexp] compiler so that non-trivial
+	literal regexps get fed to INST_REGEXP.
 
-	* generic/tclObj.c (HashObjKey): Make sure this hashes the whole
-	string rep of the object, instead of missing the last character.
+	* doc/mathop.n: Clarify definitions of some operations.
 
-2004-03-29  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-11-13  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclInt.h:
-	* generic/tclEncoding.c (TclFindEncodings, Tcl_FindExecutable):
-	* mac/tclMacInit.c (TclpInitLibraryPath):   Correct handling of UTF
-	* unix/tclUnixInit.c (TclpInitLibraryPath): data that is actually
-	* win/tclWinFile.c (TclpFindExecutable):    "clean", allowing the
-	* win/tclWinInit.c (TclpInitLibraryPath):   loading of Tcl from paths
-	that contain multi-byte chars on Windows [Bug 920667]
+	* unix/tclUnixInit.c: the TCL_NO_STACK_CHECK was being incorrectly
+	undefined here; this should be set (or not) in the compile options, it
+	is used elsewhere and needs to be consistent.
 
-2004-03-28  Miguel Sofer <msofer@users.sf.net>
+2007-11-13  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* generic/tclCompile.c (TclCompileScript): corrected possible segfault
-	when a compilation returns TCL_OUTLINE_COMPILE after having grown the
-	compile environment. [Bug 925121]
+	* unix/tcl.m4:		Added autoconf goo to detect and make use of
+	* unix/configure.in:	getaddrinfo and friends.
+	* unix/configure:	(regenerated)
 
-2004-03-21  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-11-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* win/tclWinInt.h: define VER_PLATFORM_WIN32_CE if not already set.
-	* win/tclWinInit.c (TclpSetInitialEncodings): recognize WIN32_CE
-	as a unicode (WCHAR) platform.
+	* unix/tclUnixCompat.c (TclpGetHostByName): The six-argument form of
+	getaddressbyname_r() uses the fifth argument to indicate whether the
+	lookup succeeded or not on at least one platform. [Bug 1618235]
 
-2004-03-15  Miguel Sofer <msofer@users.sf.net>
+2007-11-13  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCompile.c (TclCompileScript):
-	* tests/compile.test (compile-3.5): corrected wrong test and behaviour
-	in the earlier fix for [Bug 705406]; Don Porter reported this as [Bug
-	735055], and provided the solution. Fixed in HEAD on 2003-05-09, but
-	backport to 8-4-branch was wrongly omitted; re-reported as [Bug
-	916795] by Roy Terry, diagnosed by dgp.
+	* generic/regcomp.c:	Convert optst() from expensive no-op to a
+	cheap no-op.
 
-2004-03-08  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-11-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclFileName.c:  Fix to 'glob -path' near the root
-	* tests/fileName.test:	  of the filesystem. [Bug 910525]
+	* unix/tclUnixChan.c (CreateSocketAddress): Rewrote to use the
+	thread-safe version of gethostbyname() by forward-porting the code used
+	in 8.4, and added rudimentary support for getaddrinfo() (not enabled by
+	default, as no autoconf-ery written). Part of fix for [Bug 1618235].
 
-2004-03-01  Don Porter  <dgp@users.sourceforge.net>
+2007-11-12  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	*** 8.4.6 TAGGED FOR RELEASE ***
+	* generic/tclGet.c (Tcl_Get, Tcl_GetInt): revert use of TclGet* macros
+	due to compiler warning. These cases won't save time either.
 
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS):	Allow 64-bit enabling on
-	IRIX64-6.5* systems. [Bug 218561]
-	* unix/configure:	autoconf-2.13
+	* generic/tclUtil.c (TclReToGlob): add more comments, set interp result
+	if specified on error.
 
-	* generic/tclCmdMZ.c (TclCheckInterpTraces):	The TIP 62
-	* generic/tclTest.c (TestcmdtraceCmd):	implementation introduced a
-	* tests/basic.test (basic-39.10):	bug by testing the CallFrame
-	level instead of the iPtr->numLevels level when deciding what traces
-	created by Tcl_Create(Obj)Trace to call. Added test to expose the
-	error, and made fix. [Request 462580]
+2007-11-12  Miguel Sofer  <msofer@users.sf.net>
 
-2004-02-26  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclBasic.c:		New macro TclResetResult, new iPtr flag
+	* generic/tclExecute.c:		bit INTERP_RESULT_UNCLEAN: shortcut for
+	* generic/tclInt.h:		Tcl_ResetResult for the "normal" case:
+	* generic/tclProc.c:		TCL_OK, no return options, no errorCode
+	* generic/tclResult.c:		nor errorInfo, return at normal level.
+	* generic/tclStubLib.c:		[Patch 1830184]
+	* generic/tclUtil.c:
 
-	* macosx/Makefile: fixed copyright year in Tcl.framework Info.plist
+	THIS PATCH WAS REVERTED: initial (mis)measurements overstated the
+	perfomance wins, which turn out to be tiny. Not worth the complication.
 
-2004-02-25  Don Porter  <dgp@users.sourceforge.net>
+2007-11-11  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* tests/basic.test:	Made several tests more robust to the
-	* tests/cmdMZ.test:	list-quoting of path names that might
-	* tests/exec.test:	contain Tcl-special chars like { or [.
-	* tests/io.test:	Should help us sort out Tcl Bug 554068.
-	* tests/pid.test:
-	* tests/socket.test:
-	* tests/source.test:
-	* tests/unixInit.test:
+	* generic/tclCompCmds.c, generic/tclCompile.c, generic/tclCompile.h:
+	* generic/tclExecute.c, generic/tclInt.decls, generic/tclIntDecls.h:
+	* generic/tclRegexp.c, generic/tclRegexp.h: Add INST_REGEXP and fully
+	* generic/tclStubInit.c, generic/tclUtil.c: compiled [regexp] for the
+	* tests/regexpComp.test:     [Bug 1830166]  simple cases. Also added
+	TclReToGlob function to convert RE to glob patterns and use these in
+	the possible cases.
 
-2004-02-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2007-11-11  Miguel Sofer  <msofer@users.sf.net>
 
-	* unix/tclUnixChan.c (TcpGetOptionProc): Stop memory leak with very
-	long hostnames. [Bug 888777]
+	* generic/tclResult.c (ResetObjResult): clarify the logic.
 
-2004-02-25  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclBasic.c:		Increased usage of macros to detect
+	* generic/tclBinary.c:		and take advantage of objTypes. Added
+	* generic/tclClock.c:		macros TclGet(Int|Long)FromObj,
+	* generic/tclCmdAH.c:		TclGetIntForIndexM & TclListObjLength,
+	* generic/tclCmdIL.c:		modified TclListObjGetElements.
+	* generic/tclCmdMZ.c:
+	* generic/tclCompCmds.c:	The TclGetInt* macros are only a
+	* generic/tclCompExpr.c:	shortcut on platforms where 'long' is
+	* generic/tclCompile.c:		'int'; it may be worthwhile to extend
+	* generic/tclDictObj.c:		their functionality to other cases.
+	* generic/tclExecute.c:
+	* generic/tclGet.c:		As this patch touches many files it has
+	* generic/tclIO.c:		been recorded as [Patch 1830038] in
+	* generic/tclIOCmd.c:		order to facilitate reviewing.
+	* generic/tclIOGT.c:
+	* generic/tclIndexObj.c:
+	* generic/tclInt.h:
+	* generic/tclInterp.c:
+	* generic/tclListObj.c:
+	* generic/tclLiteral.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclParse.c:
+	* generic/tclProc.c:
+	* generic/tclRegexp.c:
+	* generic/tclResult.c:
+	* generic/tclScan.c:
+	* generic/tclStringObj.c:
+	* generic/tclUtil.c:
+	* generic/tclVar.c:
 
-	* tests/winPipe.test:
-	* win/tclWinPipe.c: backport of BuildCommandLine changes to mirror
-	msvcrt's parse_cmdline() rules of quoting.
+2007-11-11  Daniel Steffen  <das@users.sourceforge.net>
 
-2004-02-19  Mo DeJong  <mdejong@users.sourceforge.net>
+	* unix/tclUnixTime.c (TclpWideClicksToNanoseconds): Fix issues with
+	* generic/tclInt.h:				    int64_t overflow.
 
-	* win/tclWinInit.c (AppendEnvironment): Use the tail component of the
-	passed in lib path instead of just blindly using lib+4. That worked
-	when lib was "lib/..." but fails for other values. Thanks go to
-	Patrick Samson for pointing this out.
+	* generic/tclBasic.c:	Fix stack check failure case if stack grows up
+	* unix/tclUnixInit.c:	Simplify non-crosscompiled case.
 
-2004-02-17  Don Porter  <dgp@users.sourceforge.net>
+	* unix/configure:	autoconf-2.59
+	* unix/tclConfig.h.in:	autoheader-2.59
 
-	* doc/tcltest.n:
-	* library/tcltest/tcltest.tcl:	Changed -verbose default value to
-	{body error} so that detailed information on unexpected errors in
-	tests is provided by default, even after the fix for [Bug 725253]
+2007-11-10  Miguel Sofer  <msofer@users.sf.net>
 
-2004-02-17  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c: Fast path for INST_LIST_INDEX when the index is
+	not a list.
 
-	(reverted due to test failures on Solaris, but not Win/Lin :/)
-	* generic/tclIOUtil.c: backport of rewrite of generic file
-	normalization code to cope with links followed by '..'. [Bug 849514],
-	and parts of [859251]
+	* generic/tclBasic.c:
+	* unix/configure.in:
+	* unix/tclUnixInit.c: Detect stack grwoth direction at compile time,
+	only fall to runtime detection when crosscompiling.
 
-	* tests/unixInit.test: unixInit-7.1
-	* unix/tclUnixInit.c (TclpInitPlatform): ensure the std fds exist to
-	prevent crash condition [Bug 772288]
+	* unix/configure: autoconf 2.61
 
-2004-02-16  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclBasic.c:
+	* generic/tclInt.h:
+	* tests/interp.test:
+	* unix/tclUnixInit.c:
+	* win/tclWin32Dll.c: Restore simpler behaviour for stack checking, not
+	adaptive to stack size changes after a thread is launched. Consensus is
+	that "nobody does that", and so it is not worth the cost. Improved
+	failure comments (mistachkin).
 
-	* generic/tclCmdMZ.c (TclTraceExecutionObjCmd)
-	(TclTraceCommandObjCmd): fix possible mem leak in trace info.
+2007-11-10  Kevin Kenny  <kennykb@acm.org>
 
-2004-02-12  Jeff Hobbs  <jeffh@ActiveState.com>
+	* win/tclWin32Dll.c: Rewrote the Windows stack checking algorithm to
+	use information from VirtualQuery to determine the bound of the stack.
+	This change fixes a bug where the guard page of the stack was never
+	restored after an overflow. It also eliminates a nasty piece of
+	assembly code for structured exception handling on mingw. It introduces
+	an assumption that the stack is a single memory arena returned from
+	VirtualAlloc, but the code in MSVCRT makes the same assumption, so it
+	should be fairly safe.
 
-	* README:	    update patchlevel to 8.4.6
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure, unix/configure.in, unix/tcl.spec:
-	* win/README.binary, win/configure, win/configure.in:
+2007-11-10  Miguel Sofer  <msofer@users.sf.net>
 
-	* unix/tcl.m4: update HP-11 build libs setup
+	* generic/tclBasic.c:
+	* generic/tclInt.h:
+	* unix/tclUnixInit.c:
+	* unix/tclUnixPort.h:
+	* win/tclWin32Dll.c: Modify the stack checking algorithm to recheck in
+	case of failure. The working assumptions are now that (a) a thread's
+	stack is never moved, and (b) a thread's stack can grow but not shrink.
+	Port to windows - could be more efficient, but is already cheaper than
+	it was.
 
-2004-02-06  Don Porter  <dgp@users.sourceforge.net>
+2007-11-09  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/clock.n:	Removed reference to non-existent [file ctime].
+	* generic/tclResult.c (ResetObjResult): new shortcut.
 
-2004-02-04  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclAsync.c:
+	* generic/tclBasic.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclUnixInit.c:
+	* generic/tclUnixPort.h: New fields in interp (ekeko!) to cache TSD
+	data that is accessed at each command invocation, access macros to
+	replace Tcl_AsyncReady and TclpCheckStackSpace by much faster variants.
+	[Patch 1829248]
 
-	* library/tcltest/tcltest.tcl:	Corrected references to
-	non-existent $name variable in [cleanupTests]. [Bug 833637]
+2007-11-09  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2004-02-03  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclInt.decls, generic/tclIntDecls.h: Use unsigned char for
+	* generic/tclExecute.c, generic/tclUtil.c:     TclByteArrayMatch and
+	don't allow a nocase option. [Bug 1828296]
+	For INST_STR_MATCH, ignore pattern type for TclByteArrayMatch case.
 
-	* library/tcltest/tcltest.tcl:	Corrected parsing of single
-	command line argument (option with missing value) [Bug 833910]
-	* library/tcltest/pkgIndex.tcl: Bump to version 2.2.5.
+	* generic/tclBinary.c (Tcl_GetByteArrayFromObj): check type before
+	func jump (perf).
 
-2004-02-02  David Gravereaux <davygrvy@pobox.com>
+2007-11-07  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclIO.c (Tcl_Ungets): fixes improper filling of the channel
-	buffer. [Bug 405995]
+	* generic/tclStubInit.c:			Added TclByteArrayMatch
+	* generic/tclInt.decls:				for efficient glob
+	* generic/tclIntDecls.h:			matching of ByteArray
+	* generic/tclUtil.c (TclByteArrayMatch):	Tcl_Objs, used in
+	* generic/tclExecute.c (TclExecuteByteCode):	INST_STR_MATCH. [Bug
+							1827996]
 
-2004-01-13  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclIO.c (TclGetsObjBinary): Add an efficient binary path for
+					      [gets].
+	(DoWriteChars): Special case for 1-byte channel write.
 
-	* generic/tclFileName.c (Tcl_GlobObjCmd):  Latest changes to
-	management of the interp result by Tcl_GetIndexFromObj() exposed
-	improper interp result management in the [glob] command procedure.
-	Corrected by adopting the Tcl_SetObjResult(Tcl_NewStringObj) pattern.
-	This stopped a segfault in test filename-11.36.
+2007-11-06  Miguel Sofer  <msofer@users.sf.net>
 
-2004-01-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclEncoding.c: Version of the embedded iso8859-1 encoding
+	handler that is faster (functions to do the encoding know exactly what
+	they're doing instead of pulling it from a table, though the table
+	itself has to be retained for use by shift encodings that depend on
+	iso8859-1). [Patch 1826906], committing for dkf.
 
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct, Tcl_WrongNumArgs):
-	Create fresh objects instead of using the one currently in the
-	interpreter, which isn't guaranteed to be fresh and unshared. The
-	cost for the core will be minimal because of the object cache, and
-	this fixes. [Bug 875395]
+2007-11-05  Andreas Kupries  <andreask@activestate.com>
 
-2004-01-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclConfig.c (Tcl_RegisterConfig): Modified to not extend the
+	config database if the encoding provided by the user is not found
+	(venc == NULL). Scripts expecting the data will error out, however we
+	neither crash nor provide bogus information. See [Bug 983509] for more
+	discussion.
 
-	* generic/tclIOUtil.c: fix to infinite loop in TclFinalizeFilesystem.
-	[Bug 873311]
+	* unix/tclUnixChan.c (TtyGetOptionProc): Accepted [Patch 1823576]
+	provided by Stuart Cassof <stwo@users.sourceforge.net>. The patch adds
+	the necessary utf/external conversions to the handling of the arguments
+	of option -xchar which will allow the use of \0 and similar characters.
 
-2003-12-17  Daniel Steffen  <das@users.sourceforge.net>
+2007-11-03  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclBinary.c (DeleteScanNumberCache): fixed crashing bug when
-	numeric scan-value cache contains NULL value.
+	* generic/tclTest.c (TestSetCmd2):
+	* generic/tclVar.c (TclObjLookupVarEx):
+	* tests/set.test (set-5.1): Fix error branch when array name looks
+	like array element (code not normally exercised).
 
-2003-12-17  Zoran Vasiljevic  <zv@archiware.com>
+2007-11-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclIOUtil.c: fixed 2 memory (object) leaks. This fixes [Bug
-	839519]
+	* tools/tcltk-man2html.tcl (output-directive): Convert .DS/.DE pairs
+	into tables since that is now all that they are used for.
 
-2003-12-12  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* doc/RegExp.3: Clarified documentation of RE flags. [Bug 1167840]
 
-	* generic/tclCmdAH.c: fix to normalization of non-existent user name
-	('file normalize ~nobody') [Bug 858937]
+	* doc/refchan.n: Adjust internal name to be consistent with the file
+	name for reduced user confusion. After comment by Dan Steffen.
 
-2003-12-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd, UniCharIsAscii): Remember, the
+	NUL character is in ASCII too. [Bug 1808258]
 
-	* unix/tclUnixPort.h:	#ifdef'd out declarations of errno which
-	* tools/man2tcl.c:	are known to cause problems with recent
-				glibc. [Bug 852369]
+	* doc/file.n: Clarified use of [file normalize]. [Bug 1185154]
 
-2003-12-03  Don Porter  <dgp@users.sourceforge.net>
+2007-10-30  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tcl.h:	Bumped patch level to 8.4.5.1 to distinguish
-	* unix/configure.in:	CVS snapshots from 8.4.5 release.
+	* generic/tcl.h:	Bump version number to 8.5b2.1 to distinguish
+	* library/init.tcl:	CVS development snapshots from the 8.5b2
+	* unix/configure.in:	release.
 	* unix/tcl.spec:
 	* win/configure.in:
 
-	* unix/configure:	autoconf (2.13)
+	* unix/configure:	autoconf (2.59)
 	* win/configure:
 
-2003-12-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+2007-10-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclBinary.c (DeleteScanNumberCache, ScanNumber): Made
-	the numeric scan-value cache have proper references to the objects
-	within it so strange patterns of writes won't cause references to
-	freed objects. Thanks to Paul Obermeier for the report. [Bug 851747]
+	* doc/expr.n, doc/mathfunc.n: Improve documentation to try to make
+	clearer what is going on.
 
-2003-12-01  Miguel Sofer <msofer@users.sf.net>
+	* doc/interp.n: Shorten the basic descriptive text for some interp
+	subcommands so Solaris nroff doesn't truncate them. [Bug 1822268]
 
-	* doc/lset.n: fix typo [Bug 852224]
+2007-10-30  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-11-21  Don Porter  <dgp@users.sourceforge.net>
+	* tools/tcltk-man2html.tcl (output-widget-options): Enhance the HTML
+	generator so that it can produce multi-line option descriptions.
 
-	*** 8.4.5 TAGGED FOR RELEASE ***
+2007-10-28  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/windFCmd.test (winFCmd-16.10):	Corrected failure to
-	initialize variable $dd that caused test suite failure.
+	* generic/tclUtil.c (Tcl_ConcatObj): optimise for some of the
+	concatenees being empty objs. [Bug 1447328]
 
-2003-11-20  Miguel Sofer <msofer@users.sf.net>
+2007-10-28  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclVar.c: fix flag bit collision between LOOKUP_FOR_UPVAR
-	and TCL_PARSE_PART1 (deprecated) [Bug 835020]
+	* generic/tclEncoding.c (TclInitEncodingSubsystem): Hard code the
+	iso8859-1 encoding, as it's needed for more than just text (especially
+	binary encodings...) Note that other encodings rely on the encoding
+	being a table encoding (!) so we can't use more efficient encoding
+	mapping functions.
 
-2003-11-20  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-10-27  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclIOUtil.c:
-	* tests/winFCmd.test: fix to [Bug 845778] - Infinite recursion on [cd]
-	(Windows only bug).
+	* generic/regc_lex.c (lexescape): Close off one of the problems
+	mentioned in [Bug 1810264].
 
-2003-11-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-10-27  Miguel Sofer  <msofer@users.sf.net>
 
-	* changes: updated for 8.4.5 release
+	* generic/tclNamesp.c (Tcl_FindCommand): insure that FQ command names
+	are searched from the global namespace, ie, bypassing resolvers of the
+	current namespace. [Bug 1114355]
 
-2003-11-17  Don Porter  <dgp@users.sourceforge.net>
+	* doc/apply.n: fixed example [Bug 1811791]
+	* doc/namespace.n: improved example [Bug 1788984]
+	* doc/AddErrInfo.3: typo [Bug 1715087]
+	* doc/CrtMathFnc.3: fixed Tcl_ListMathFuncs entry [Bug 1672219]
 
-	* generic/regcomp.c:	Backported regexp bug fixes and tests. Thanks
-	* generic/tclTest.c:	to Pavel Goran and Vince Darley.
-	* tests/reg.test:	[Bugs 230589, 504785, 505048, 703709, 840258]
+	* generic/tclCompile.h:
+	* generic/tclInt.h: moved declaration of TclSetCmdNameObj from
+	tclCompile.h to tclInt.h, reverting linker [Bug 1821159] caused by
+	commit of 2007-10-11 (both I and gcc missed one dep).
 
-2003-11-12  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclVar.c: try to preserve Tcl_Objs when doing variable
+	lookups by name, partially addressing [Bug 1793601].
 
-	* tests/cmdMZ.test (cmdMZ-1.4): change to nonPortable as more
-	systems are using permissions caching, and this isn't really a Tcl
-	controlled issue.
+2007-10-27  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-11-11  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tools/tcltk-man2html.tcl (make-man-pages, htmlize-text)
+	(process-text): Make the man->HTML scraper work better.
 
-	* unix/configure:
-	* unix/tcl.m4: improve AIX --enable-64bit handling
+2007-10-26  Don Porter	<dgp@users.sourceforge.net>
 
-2003-11-10  Don Porter  <dgp@users.sourceforge.net>
+	*** 8.5b2 TAGGED FOR RELEASE ***
 
-	* tests/unixInit.test (unixInit-2.10): re-enabled.
-	* unix/tclUnixInit.c (TclpInitLibraryPath):	Alternative fix
-	* win/tclWinInit.c (TclpInitLibraryPath):	for [Bug 832657]
-	that should not run afoul of startup constraints.
+	* changes:		Updated for 8.5b2 release.
 
-	* library/dde/pkgIndex.tcl:	Added safeguards so that registry
-	* library/reg/pkgIndex.tcl:	and dde packages are not offered
-	* win/tclWinDde.c:	on non-Windows platforms.  Bumped to
-	* win/tclWinReg.c:	registry 1.1.3 and dde 1.2.2.
+	* doc/*.1:		Revert doc changes that broke
+	* doc/*.3:		`make html` so we can get the release
+	* doc/*.n:		out the door.
 
-2003-11-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* README:		Bump version number to 8.5b2.
+	* generic/tcl.h:
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* tests/unixInit.test (unixInit-2.10): mark as knownBug
-	* generic/tclEncoding.c (TclFindEncodings): revert patch from
-	2003-11-05.  It wasn't valid in the sensitive startup init phase
-	and broke Windows from working at all.
+	* unix/configure:	autoconf (2.59)
+	* win/configure:
 
-2003-11-07  Daniel Steffen  <das@users.sourceforge.net>
+2007-10-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* macosx/Makefile: optimized builds define NDEBUG to turn off
-	ThreadAlloc range checking.
+	* tools/man2help2.tcl, tools/man2tcl.c: Made some of the tooling code
+	to do man->other formats work better with current manpage set. Long
+	way still to go.
 
-2003-11-05  Don Porter  <dgp@users.sourceforge.net>
+2007-10-25  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* generic/tclEncoding.c (TclFindEncodings):	Normalize the path
-	of the executable before passing to TclpInitLibraryPath() to avoid
-	buggy handling of paths containing "..". [Bug 832657]
-	* tests/unixInit.test (unixInit-2.10): New test for fixed bug.
+	* generic/tclThread.c: Added TclpMasterLock/Unlock arround calls to
+	ForgetSyncObject in Tcl_MutexFinalize and Tcl_ConditionFinalize to
+	prevent from garbling the internal lists that track sync objects. [Bug
+	1726873]
 
-2003-11-04  Daniel Steffen  <das@users.sourceforge.net>
+2007-10-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* macosx/Makefile: added 'test' target.
+	* tools/man2html2.tcl (macro): Added support for converting the new
+	macros into HTML.
 
-2003-10-31  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* doc/man.macros (QW,PQ,QR,MT): New macros that hide the ugly mess
+	needed to get proper GOOBE quoting in the manual pages.
+	* doc/*.n, doc/*.3, doc/*.1: Lots of changes to take advantage of the
+	new macros.
 
-	* generic/tclTest.c: fix test suite memory leak (backport error)
-	* unix/tclUnixFile.c: ensure translated path (required for correct
-	error messages) is freed in both code paths.
+2007-10-20  Miguel Sofer  <msofer@users.sf.net>
 
-2003-10-23  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCompile.c:   Fix comments.
+	* generic/tclExecute.c:
 
-	* unix/tclUnixChan.c (Tcl_MakeFileChannel): Applied [Patch 813606]
-	fixing [Bug 813087]. Detection of sockets was off for Mac OS X which
-	implements pipes as local sockets. The new code ensures that only IP
-	sockets are detected as such.
+2007-10-18  David Gravereaux <davygrvy@pobox.com>
 
-2003-10-22  Andreas Kupries  <andreask@activestate.com>
+	* tools/mkdepend.tcl: sort the dep list for a more humanly readable
+	output.
 
-	* win/tclWinSock.c (TcpWatchProc): Watch for FD_CLOSE too when asked
-	for writable events by the generic layer.
-	(SocketEventProc): Generate a writable event too when a close is
-	detected.
+2007-10-18  Don Porter	<dgp@users.sourceforge.net>
 
-	Together the changes fix [Bug 599468].
+	* generic/tclResult.c (TclMergeReturnOptions):	Make sure any -code
+	values get pulled out of the dictionary, even if they are integer
+	valued.
 
-2003-10-22  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCompCmds.c (TclCompileReturnCmd):	Added code to more
+	optimally compile [return -level 0 $x] to "push $x". [RFE 1794073]
 
-	* generic/tclIOUtil.c (FsListMounts, FsAddMountsToGlobResult): New
-	functions. See below for context.
-	(Tcl_FSMatchInDirectory): Modified to call on the new functions
-	(above) to handle the mountpoints in the glob'bed directory correctly.
-	Part of the patch by Vincent Darley to solve the [Bug 800106] for the
-	8.4.x series.
+	* compat/tmpnam.c (removed):	The routine tmpnam() is no longer
+	* unix/Makefile.in:	called by Tcl source code. Remove autogoo the
+	* unix/configure.in:	supplied a replacement version on systems
+	* win/tcl.dsp:		where the routine was not available. [RFE
+	1811848]
 
-	* generic/tcl.h (TCL_GLOB_TYPE_MOUNT): New definition. Part of the
-	patch by Vincent Darley to solve [Bug 800106] for the 8.4.x series.
+	* unix/configure:	autoconf-2.59
 
-2003-10-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tcl.h:	Remove TCL_LL_MODIFIER_SIZE. [RFE 1811837]
 
-	* generic/tclCmdAH.c (Tcl_FileObjCmd): Changed FILE_ prefix for option
-	enumeration to FCMD_ to prevent collision with symbols defined by
-	Cygwin/Mingw32 on NT. [Bug 822528]
+2007-10-17  David Gravereaux <davygrvy@pobox.com>
 
-2003-10-21   Daniel Steffen  <das@users.sourceforge.net>
+	* tools/mkdepend.tcl:	Improved defense from malformed object list
+	infile.
 
-	* tools/tcltk-man2html.tcl: fixed incorrect html generated for .IP/.TP
-	lists, now use <DL><DT>...<DD>...<P><DT>...<DD>...</DL> instead of
-	illegal <DL><P><DT>...<DD>...<P><DT>...<DD>...</DL>. Added skipping of
-	directives directly after .TP to avoid them being used as item
-	descriptions, e.g. .TP\n.VS in clock.n.
+2007-10-17  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2003-10-21  Andreas Kupries  <andreask@activestate.com>
+	* tools/man2html2.tcl: Convert .DS/.DE into HTML tables, not
+	preformatted text.
 
-	* win/tclWinPipe.c (BuildCommandLine): Applied the patch coming with
-	[Bug 805605] to the code, fixing the incorrect use of ispace noted by
-	Ronald Dauster <ronaldd@users.sourceforge.net>.
+2007-10-17  Kevin B. Kenny  <kennykb@acm.org>
 
-2003-10-14  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclCompExpr.c: Moved a misplaced declaration that blocked
+				 compilation on VC++.
+	* generic/tclExecute.c: Silenced several VC++ compiler warnings about
+				converting 'long' to 'unsigned short'.
 
-	* win/tclAppInit.c (sigHandler): Punt gracefully if exitToken has
-	already been destroyed.
+2007-10-16  David Gravereaux <davygrvy@pobox.com>
 
-2003-10-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* win/makefile.vc: removed old dependency cruft that is no longer
+	needed.
 
-	* generic/tclCmdMZ.c:
-	* tests/regexp.test: fix to [Bug 823524] in regsub; added three new
-	tests.
+2007-10-15  Don Porter	<dgp@users.sourceforge.net>
 
-2003-10-12  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIOCmd.c:	Revise [open] so that it interprets leading
+	zero strings passed as the "permissions" argument as octal numbers,
+	even if Tcl itself no longer parses integers in that way.
 
-	* unix/tclUnixTest.c (TestalarmCmd): don't bother checking return
-	value of alarm. [Bug 664755] (english)
+	* unix/tclUnixFCmd.c:	Revise the "-permissions" [file attribute] so
+	that it interprets leading zero strings as octal numbers, even if Tcl
+	itself no longer parses integers in that way.
 
-2003-10-08  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompExpr.c:	Corrections to code that produces
+	* generic/tclUtil.c:		extended "bad octal" error messages.
 
-	* generic/tclBasic.c:	Save and restore the iPtr->flag bits that
-	control the state of errorCode and errorInfo management when calling
-	"leave" execution traces, so that all error information of the traced
-	command is still available whether traced or not. Thanks to Yahalom
-	Emet. [Bug 760947]
+	* tests/cmdAH.test:	Test revisions so that tests pass whether or
+	* tests/cmdIL.test:	not Tcl parses leading zero strings as octal.
+	* tests/compExpr-old.test:
+	* tests/compExpr.test:
+	* tests/compile.test:
+	* tests/expr-old.test:
+	* tests/expr.test:
+	* tests/incr.test:
+	* tests/io.test:
+	* tests/lindex.test:
+	* tests/link.test:
+	* tests/mathop.test:
+	* tests/parseExpr.test:
+	* tests/set.test:
+	* tests/string.test:
+	* tests/stringComp.test:
 
-2003-10-08  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-10-15  David Gravereaux <davygrvy@pobox.com>
 
-	* generic/tclTest.c (TestNumUtfCharsCmd): Command to allow finer
-	access to Tcl_NumUtfChars for testing.
-	* generic/tclUtf.c (Tcl_NumUtfChars): Corrected string length
-	determining when the length parameter is negative; the terminator is a
-	zero byte, not (necessarily) a \u0000 character. [Bug 769812]
+	* tools/mkdepend.tcl:	Produces usable output. Include path problem
+	* win/makefile.vc:	fixed. Never fight city hall when it comes to
+	levels of quoting issues.
 
-2003-10-07  Don Porter  <dgp@users.sourceforge.net>
+2007-10-15  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/exec.test:		Corrected temporary file management
-	* tests/fileSystem.test:	issues uncovered by -debug 1 test
-	* tests/io.test:		operations.  Also backported some
-	* tests/ioCmd.test:		other fixes from the HEAD.
-	* tests/pid.test:		[Bugs 675605, 675655, 675659]
-	* tests/socket.test:
-	* tests/source.test:
+	* generic/tclParse.c (Tcl_ParseBraces): fix for possible read after
+	the end of buffer. [Bug 1813528] (Joe Mistachkin)
 
-	* tests/fCmd.test:	Run tests with the [temporaryDirectory] as
-	the current directory, so that tests can depend on ability to write
-	files.	[Bug 575837]
+2007-10-14  David Gravereaux <davygrvy@pobox.com>
 
-	* doc/OpenFileChnl.3:	Updated Tcl_Tell and Tcl_Seek documentation
-	to reflect that they now return Tcl_WideInt (TIP 72) [Bug 787537]
+	* tools/mkdepend.tcl (new):  Initial stab at generating automatic
+	* win/makefile.vc:           dependencies.
 
-	* tests/io.test:	Corrected several tests that failed when paths
-	* tests/ioCmd.test:	included regexp-special chars. [Bug 775394]
+2007-10-12  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2003-10-06  Don Porter  <dgp@users.sourceforge.net>
+	* win/makefile.vc:  Mine all version information from headers.
+	* win/rules.vc:     Sync tcl and tk and bring extension versions
+	* win/nmakehlp.c:   closer together. Try and avoid using tclsh to do
+			    substitutions as we may cross compile.
+	* win/coffbase.txt: Added offsets for snack dlls.
 
-	* tests/regexp.test:		Matched [makeFile] with [removeFile].
-	* tests/regexpComp.test:	[Bug 675652]
+2007-10-11  David Gravereaux <davygrvy@pobox.com>
 
-	* tests/fCmd.test (fCmd-8.2):	Test only that tilde-substitution
-	happens, not for any particular result. [Bug 685991]
+	* win/makefile.vc:  Fixed my bad spelling mistakes from years back.
+	Dedependency, duh!  Rather funny.
 
-	* unix/tcl.m4 (SC_PATH_TCLCONFIG):	Corrected search path so
-	that alpha and beta releases of Tcl are not favored. [Bug 608698]
+2007-10-11  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/reg.test:	Corrected duplicate test names.
-	* tests/resource.test:	[Bugs 710370, 710358]
+	* generic/tclCmdMZ.c:	Correct [string is (wide)integer] failure
+	* tests/string.test:	to report correct failindex values for
+	non-decimal integer strings. [Bug 1805887]
 
-	* tests/cmdMZ.test:	Updated [package require tcltest] lines to
-	* tests/fileSystem.test:	indiciate that these test files
-	* tests/notify.test:	use features of tcltest 2. [Bug 706114]
-	* tests/parseExpr.test:
-	* tests/unixNotfy.test:
+	* compat/strtoll.c (removed):	The routines strtoll() and strtoull()
+	* compat/strtoull.c (removed):	are no longer called by the Tcl source
+	* generic/tcl.h:	code. (Their functionality has been replaced
+	* unix/Makefile.in:	by TclParseNumber().) Remove outdated comments
+	* unix/configure.in:	and mountains of configury autogoo that
+	* unix/tclUnixPort.h:	allegedly support the mythical systems where
+	* win/Makefile.in:	these routines might not have been available.
+	* win/makefile.bc:
+	* win/makefile.vc:
+	* win/tclWinPort.h:
 
-2003-10-06  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* unix/configure:	autoconf-2.59
 
-	* generic/tclFileName.c:
-	* generic/tclIOUtil.c: backport of volumerelative file normalization
-	and 'file join' inconsistency fixes [Bug 767834, 813273].
+2007-10-11  Miguel Sofer  <msofer@users.sf.net>
 
-2003-10-04  Chengye Mao <chengye.geo@yahoo.com>
+	* generic/tclObj.c: remove superfluous #include of tclCompile.h
 
-	* win/tclWinPipe.c: fixed a bug in BuildCommandLine.
-	This bug built a command line with a missing space between
-	tclpipe.dll and the following arguments.  It caused error
-	in Windows 98 when exec command.com (e.g. dir) [Bug 789040]
+2007-10-08  George Peter Staplin <georgeps@xmission.com>
 
-2003-10-03  Don Porter  <dgp@users.sourceforge.net>
+	* doc/Hash.3: Correct the valid usage of the flags member for the
+	Tcl_HashKeyType. It should be 0 or more of the flags mentioned.
 
-	* generic/tclBasic.c:	Fixed error in ref count management of command
-	* generic/tclCmdMZ.c:	and execution traces that caused access to
-	freed memory in trace-32.1. [Bug 811483]
+2007-10-02  Jeff Hobbs  <jeffh@ActiveState.com>
 
-2003-10-03  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tcl.h (Tcl_DecrRefCount): Update change from 2006-05-29 to
+	make macro more warning-robust in unbraced if code.
 
-	* tests/fileName.test:
-	* tests/winFCmd.test:
-	* doc/FileSystem.3: backported various test and documentation changes
-	from HEAD. Backport of actual code fixes to follow.
+2007-10-02  Don Porter	<dgp@users.sourceforge.net>
 
-2003-10-02  Don Porter  <dgp@users.sourceforge.net>
+	[core-stabilizer-branch]
 
-	* README:		Bumped patch level to 8.4.5 to prepare
-	* generic/tcl.h:	for next patch release.
+	* README:               Bump version number to 8.5.0
+	* generic/tcl.h:
+	* library/init.tcl:
 	* tools/tcl.wse.in:
 	* unix/configure.in:
 	* unix/tcl.spec:
-	* win/README.binary:
 	* win/configure.in:
 
-	* unix/configure:	autoconf (2.13)
+	* unix/configure:	autoconf (2.59)
 	* win/configure:
 
-	* library/http/http.tcl:	Bumped to http 2.4.5
-	* library/http/pkgIndex.tcl:
-
-2003-10-01  Daniel Steffen  <das@users.sourceforge.net>
-
-	* macosx/Makefile: fixed redo prebinding bug when DESTDIR="".
-	* mac/tclMacResource.c: fixed possible NULL dereference (bdesgraupes).
+2007-10-02  Andreas Kupries  <andreask@activestate.com>
 
-2003-09-29  Don Porter  <dgp@users.sourceforge.net>
+	* library/tclIndex: Added 'tcl::tm::path' to the tclIndex. This fixes
+	[Bug 1806422] reported by Don Porter.
 
-	* generic/tclBasic.c (CallCommandTraces):	Added safety bit
-	* tests/trace.test:	masking to prevent any of the bit values
-	TCL_TRACE_*_EXEC from leaking into the flags field of any Command
-	struct. This does not fix [Bug 811483] but helps to contain some of
-	its worst symptoms. Also backported the corrections to test trace-28.4
-	from Vince Darley.
+2007-09-25  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2003-09-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclProc.c (Tcl_DisassembleObjCmd): Define a command,
+	::tcl::unsupported::disassemble, which can disassemble procedures,
+	lambdas and general scripts.
+	* generic/tclCompile.c (TclDisassembleByteCodeObj): Split apart the
+	code to print disassemblies of bytecode so that there is reusable code
+	that spits it out in a Tcl_Obj and then that code is used when doing
+	tracing.
 
-	* library/http/http.tcl (geturl): Correctly check the type of
-	boolean-valued options. [Bug 811170]
+2007-09-20  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tcl.m4 (SC_ENABLE_FRAMEWORK): Added note to make it clearer
-	that this is an OSX feature, not a general Unix feature. [Bug 619440]
+	*** 8.5b1 TAGGED FOR RELEASE ***
 
-2003-09-28  David Gravereaux <davygrvy@pobox.com>
+	* changes: updates for 8.5b1 release.
 
-	* win/tclWinPipe.c: The windows port of expect can call
-	TclWinAddProcess before any of the other pipe functions. Added a
-	missing PipeInit() call to make sure the initialization happens.
+2007-09-19  Don Porter	<dgp@users.sourceforge.net>
 
-2003-09-25  Daniel Steffen  <das@users.sourceforge.net>
-
-	* macosx/Makefile: ensure SYMROOT exists if OBJROOT is overridden on
-	command line. Replaced explict use of /usr/bin by ${BINDIR}.
+	* README:		Bump version number to 8.5b1
+	* generic/tcl.h:	Merge from core-stabilizer-branch.
+	* library/init.tcl:	Stabilizing toward 8.5b1 release now done on
+	* tools/tcl.wse.in:	the HEAD. core-stabilizer-branch is now
+	* unix/configure.in:	suspended.
+	* unix/tcl.spec:
+	* win/configure.in:
 
-2003-09-23  Don Porter  <dgp@users.sourceforge.net>
+2007-09-19  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c:			Fixed [Bug 807243] where
-	* tests/trace.test (trace-31,32.*):	the introspection results
-	of both [trace info command] and [trace info execution] were getting
-	co-mingled.  Thanks to Mark Saye for the report.
+	* generic/tclStubLib.: Replaced isdigit with internal implementation.
 
-	* library/init.tcl (auto_load, auto_import):  Expanded Eric Melski's
-	2000-01-28 fix for [Bug 218871] to all potentially troubled uses of
-	[info commands] on input data, where glob-special characters could
-	cause problems.
+2007-09-18  Don Porter	<dgp@users.sourceforge.net>
 
-2003-09-19  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclStubLib.c:	Remove C library calls from Tcl_InitStubs() so
+	* win/makefile.vc:	that we don't need the C library linked in to
+	libtclStub.
 
-	* generic/tclExecute.c: adding (DE)CACHE_STACK_INFO() pairs to protect
-	all calls that may cause traces on ::errorInfo or ::errorCode to
-	corrupt the stack [Bug 804681]
+2007-09-17  Pat Thoyts  <patthoyts@users.sourceforge.net>
 
-2003-09-10  Don Porter  <dgp@users.sourceforge.net>
+	* win/makefile.vc: Add crt flags for tclStubLib now it uses C-library
+			   functions.
 
-	* library/opt/optparse.tcl:	Overlooked dependence of opt 0.4.4
-	* library/opt/pkgIndex.tcl:	on Tcl 8.2.  Bumped to opt 0.4.4.1.
+2007-09-17  Joe English	 <jenglish@users.sourceforge.net>
 
-2003-09-01  Zoran Vasiljevic <zoran@archiware.com>
+	* tcl.m4: use '${CC} -shared' instead of 'ld -Bshareable' to build
+	shared libraries on current NetBSDs. [Bug 1749251]
+	* unix/configure: regenerated (autoconf-2.59).
 
-	* generic/tclIOUtil.c: backported fix from HEAD [Bug 788780]
+2007-09-17  Don Porter	<dgp@users.sourceforge.net>
 
-2003-08-27  Don Porter  <dgp@users.sourceforge.net>
+	* unix/Makefile.in:	Update `make dist` so that tclDTrace.d is
+	included in the source code distribution.
 
-	* generic/tclUtil.c:	Corrected [Bug 411825] and other bugs in
-	TclNeedSpace() where non-breaking space (\u00A0) and backslash-escaped
-	spaces were handled incorrectly.
-	* tests/util.test:	Added new tests util-8.[2-6].
+	* generic/tcl.h:	Revised Tcl_InitStubs() to restore Tcl 8.4
+	* generic/tclPkg.c:	source compatibility with callers of
+	* generic/tclStubLib.c:	Tcl_InitStubs(interp, TCL_VERSION, 1). [Bug
+	1578344]
 
-2003-08-06  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-09-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* win/tclWinInit.c: recognize amd64 and ia32_on_win64 cpus and
-	Windows CE platform.
+	* generic/tclTrace.c (Tcl_TraceObjCmd, TraceExecutionObjCmd)
+	(TraceCommandObjCmd, TraceVariableObjCmd):   Generate literal values
+	* generic/tclNamesp.c (NamespaceCodeCmd):    more efficiently using
+	* generic/tclFCmd.c (CopyRenameOneFile):     TclNewLiteralStringObj
+	* generic/tclEvent.c (TclSetBgErrorHandler): macro.
 
-2003-08-06  Don Porter  <dgp@users.sourceforge.net>
+2007-09-15  Daniel Steffen  <das@users.sourceforge.net>
 
-	* library/msgcat/msgcat.tcl:	Added escape so that non-Windows
-	* library/msgcat/pkgIndex.tcl:	platforms do not try to use the
-	registry package.  This can save a costly and pointless package
-	search. Bumped to 1.3.1. Thanks to Dave Bodenstab. [Bug 781609]
+	* unix/tcl.m4:	replace all direct references to compiler by ${CC} to
+			enable CC overriding at configure & make time; run
+			check for visibility "hidden" with all compilers;
+			quoting fixes from TEA tcl.m4.
+	(SunOS-5.1x):	replace direct use of '/usr/ccs/bin/ld' in SHLIB_LD by
+			'cc' compiler driver.
+	* unix/configure: autoconf-2.59
 
-2003-08-05  Miguel Sofer <msofer@users.sf.net>
+2007-09-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclExecute.c (INST_INVOKE, INST_EVAL, INST_PUSH_RESULT):
-	added a Tcl_ResetResult(interp) at each point where the interp's
-	result is pushed onto the stack, to avoid keeping an extra reference
-	that may cause costly Tcl_Obj duplication. Detected by Franco Violi,
-	analyzed by Peter Spjuth and Donal Fellows. [Bug 781585]
+	* generic/tclBasic.c (Tcl_CreateObjCommand): Only invalidate along the
+	namespace path once; that is enough. [Bug 1519940]
 
-2003-07-24  Reinhard Max  <max@suse.de>
+2007-09-14  Daniel Steffen  <das@users.sourceforge.net>
 
-	* library/package.tcl: Fixed a typo that broke pkg_mkIndex -verbose.
+	* generic/tclDTrace.d (new file): Add DTrace provider for Tcl; allows
+	* generic/tclCompile.h:		  tracing of proc and command entry &
+	* generic/tclBasic.c:		  return, bytecode execution, object
+	* generic/tclExecute.c:		  allocation and more; with
+	* generic/tclInt.h:		  essentially zero cost when tracing
+	* generic/tclObj.c:		  is inactive; enable with
+	* generic/tclProc.c:		  --enable-dtrace configure arg
+	* unix/Makefile.in:		  (disabled by default, will only
+	* unix/configure.in:		  enable if DTrace is present). [Patch
+	1793984]
+
+	* macosx/GNUmakefile:		  Enable DTrace support.
+	* macosx/Tcl-Common.xcconfig:
+	* macosx/Tcl.xcodeproj/project.pbxproj:
+
+	* generic/tclCmdIL.c:	Factor out core of InfoFrameCmd() into
+				internal TclInfoFrame() for use by DTrace
+				probes.
 
-	* tests/pkgMkIndex.test: Added a test for [pkg_mkIndex -verbose].
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-2003-07-23  Daniel Steffen  <das@users.sourceforge.net>
+2007-09-12  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/Makefile.in: changes to html-tcl & html-tk targets for
-	compatibility with non-gnu makes.
+	* unix/Makefile.in:	Perform missing updates of the tcltest Tcl
+	* win/Makefile.in:	Module installed filename that should have
+	been part of the bump to tcltest 2.3b1. Thanks Larry Virden.
 
-	* unix/Makefile.in: added macosx/README to dist target.
+2007-09-12  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-2003-07-23  Pat Thoyts  <patthoyts@users.sourceforge.net>
+	* win/makefile.vc, win/rules.vc, win/nmakehlp.c: Use nmakehlp to
+	substitute values for tclConfig.sh (helps cross-compiling).
 
-	* win/tclWinReg.c (OpenSubKey): Backported fix for [Bug 775976] which
-	causes the registry set command to fail when built with VC7.
-	* library/reg/pkgIndex.tcl: Incremented the version to 1.1.2.
+2007-09-11  Don Porter	<dgp@users.sourceforge.net>
 
-2003-07-21  Jeff Hobbs  <jeffh@ActiveState.com>
+	* library/tcltest/tcltest.tcl:	Accept underscores and colons in
+	* library/tcltest/pkgIndex.tcl: constraint names. Properly handle
+	constraint expressions that return non-numeric boolean results like
+	"false". Bump to tcltest 2.3b1. [Bug 1772989; RFE 1071322]
+	* tests/info.test:	Disable fragile tests.
 
-	*** 8.4.4 TAGGED FOR RELEASE ***
+	* doc/package.n:	Restored the functioning of [package require
+	* generic/tclPkg.c:	-exact] to be compatible with Tcl 8.4. [Bug
+	* tests/pkg.test:	1578344]
 
-	* changes: updated for 8.4.4 release
+2007-09-11  Miguel Sofer  <msofer@users.sf.net>
 
-2003-07-18  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclCompCmds.c (TclCompileDictCmd-update):
+	* generic/tclCompile.c (tclInstructionTable):
+	* generic/tclExecute.c (INST_DICT_UPDATE_END): fix stack management in
+	compiled [dict update]. [Bug 1786481]
 
-	* macosx/Makefile: added option to allow installing manpages in
-	addition to default html help.
+	***POTENTIAL INCOMPATIBILITY***
+	Scripts that were precompiled on earlier versions of 8.5 and use [dict
+	update] will crash. Workaround: recompile.
 
-2003-07-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-09-11  Kevin B. Kenny  <kennykb@acm.org>
 
-	* doc/Utf.3: Tightened up documentation of Tcl_UtfNext and Tcl_UtfPrev
-	to better match the behaviour. [Bug 769895]
+	* generic/tclExecute.c: Corrected an off-by-one error in the setting
+	of MaxBaseWide for certain powers. [Bug 1767293 - problem reported in
+	comments when bug was reopened]
 
-2003-07-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-09-10  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclIOUtil.c: correct MT-safety issues with filesystem
-	records. [Bug 753315] (vasiljevic)
+	* generic/tclLink.c (Tcl_UpdateLinkedVar): guard against var being
+	unlinked. [Bug 1740631] (maros)
 
-	* library/http/pkgIndex.tcl: merged to v2.4.4 from head
-	* library/http/http.tcl: add support for user:pass info in URL.
-	* tests/http.test:	 [Bug 759888] (shiobara)
+2007-09-10  Miguel Sofer  <msofer@users.sf.net>
 
-2003-07-18  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompile.c: fix tclInstructionTable entry for
+	dictUpdateEnd
 
-	* generic/tclBasic.c:	Corrected several instances of unsafe
-	* generic/tclCompile.c:	truncation of UTF-8 strings that might break
-	* generic/tclProc.c:	apart a multi-byte character. [Bug 760872]
-	* library/init.tcl:
-	* tests/init.test:
-
-	* doc/tcltest.n:		Restored the [Eval] proc to replace
-	* library/tcltest/tcltest.tcl:	the [::puts] command when either the
-	-output or -error option for [test] is in use, in order to capture
-	data written to the output or error channels for comparison against
-	what is expected. This is easier to document and agrees better with
-	most user expectations than the previous attempt to replace [puts]
-	only in the caller's namespace. Documentation made more precise on the
-	subject. [Bug 706359]
-
-	* doc/AddErrInfo.3:	Improved consistency of documentation by using
-	* doc/CrtTrace.3:	"null" everywhere to refer to the character
-	* doc/Encoding.3:	'\0', and using "NULL" everywhere to refer to
-	* doc/Eval.3:		the value of a pointer that points to nowhere.
-	* doc/GetIndex.3:	Also dropped references to ASCII that are no
-	* doc/Hash.3:		longer true, and standardized on the
-	* doc/LinkVar.3:	hyphenated spelling of "null-terminated".
-	* doc/Macintosh.3:
-	* doc/OpenFileChnl.3:
-	* doc/SetVar.3:
-	* doc/StringObj.3:
-	* doc/Utf.3:
+	* generic/tclExecute.c: remove unneeded setting of 'cleanup' variable
+	before jumping to checkForCatch.
 
-	* doc/CrtSlave.3 (Tcl_MakeSafe):  Removed warning about possible
-	deprecation (no TIP on that).
+2007-09-10  Don Porter	<dgp@users.sourceforge.net>
 
-2003-07-17  Daniel Steffen  <das@users.sourceforge.net>
+	* doc/package.n:	Restored the document parallel syntax of the
+	* generic/tclPkg.c:	[package present] and [package require]
+	* tests/pkg.test:	commands. [Bug 1723675]
 
-	* macosx/Makefile: added var to allow overriding of tclsh used during
-	html help building (Landon Fuller).
+2007-09-09  Don Porter	<dgp@users.sourceforge.net>
 
-2003-07-16  Mumit Khan  <khan@nanotech.wisc.edu>
+	* generic/tclInt.h:	Removed the "nsName" Tcl_ObjType from the
+	* generic/tclNamesp.c:	registered set. Revised the management of the
+	* generic/tclObj.c:	intrep of that Tcl_ObjType. Revised the
+	* tests/obj.test:	TclGetNamespaceFromObj() routine to return
+	TCL_ERROR and write a consistent error message when a namespace is not
+	found. [Bug 1588842. Patch 1686862]
 
-	* generic/tclIOUtil.c (SetFsPathFromAny): Add Cygwin specific code to
-	convert POSIX filename to native format.
-	* generic/tclFileName.c (Tcl_TranslateFileName): And remove from here.
-	(TclDoGlob): Adjust for cygwin and append / for dirs instead of \
-	* win/tclWinFile.c (TclpObjChdir): Use chdir on Cygwin. [Patch 679315]
+	***POTENTIAL INCOMPATIBILITY***
+	For callers of Tcl_GetObjType() on the name "nsName".
 
-2003-07-16  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c: Update TclGetNamespaceFromObj() callers.
+	* generic/tclProc.c:
 
-	* library/safe.tcl (FileInAccessPath): normalize paths before
-	comparison. [Bug 759607] (myers)
+	* tests/apply.test:		Updated tests to expect new consistent
+	* tests/namespace-old.test:	error message when a namespace is not
+	* tests/namespace.test:		found.
+	* tests/upvar.test:
 
-	* unix/tclUnixNotfy.c (NotifierThreadProc): correct size of found and
-	word vars from int to long. [Bug 767578] (hgo)
+	* generic/tclCompCmds.c:	Use the new INST_REVERSE instruction
+	* tests/mathop.test:	to correct the compiled versions of math
+	operator commands. [Bug 1724437]
 
-2003-07-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclCompile.c: New bytecode instruction INST_REVERSE to
+	* generic/tclCompile.h: reverse the order of N items at the top of
+	* generic/tclExecute.c: stack.
 
-	* doc/CrtSlave.3 (Tcl_MakeSafe): Updated documentation to strongly
-	discourage use. IMHO code outside the core that uses this function is
-	a bug... [Bug 655300]
+	* generic/tclCompCmds.c (TclCompilePowOpCmd):	Make a separate
+	routine to compile ** to account for its different associativity.
 
-2003-07-16  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-09-08  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tcl.h:       Add recognition of -DTCL_UTF_MAX=6 on the
-	* generic/regcustom.h: make line to support UCS-4 mode. No config arg
-	at this time, as it is not the recommended build mode.
+	* generic/tclVar.c (Tcl_SetVar2, TclPtrSetVar): [Bug 1710710] fixed
+	correctly, reverted fix of 2007-05-01.
 
-	* generic/tclPreserve.c: In Result and Preserve'd routines, do not
-	* generic/tclUtil.c:	 assume that ckfree == free, as that is not
-	* generic/tclResult.c:	 always true. [Bug 756791] (fuller)
+2007-09-08  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclDictObj.c (DictUpdateCmd, DictWithCmd): Plug a hole that
+	* generic/tclExecute.c (TEBC,INST_DICT_UPDATE_END): allowed a careful
+	* tests/dict.test (dict-21.16,21.17,22.11): attacker to craft a dict
+	containing a recursive link to itself, violating one of Tcl's
+	fundamental datatype assumptions and causing a stack crash when the
+	dict was converted to a string. [Bug 1786481]
 
-	* win/Makefile.in: Don't define TCL_DBGX symbol for every compile.
-	Instead, define TCL_PIPE_DLL only when compiling tclWinPipe.c. This
-	will break other build systems, so they will need to remove the
-	TCL_DBGX define and replace it with a define for TCL_PIPE_DLL.
-	* win/makefile.vc: Ditto.
-	* win/tclWinPipe.c (TclpCreateProcess): Remove PREFIX_IDENT and
-	DEBUG_IDENT from top of file. Use TCL_PIPE_DLL passed in from build
-	env instead of trying to construct the dll name from already defined
-	symbols. This approach is more flexible and better in the long run.
+2007-09-07  Don Porter	<dgp@users.sourceforge.net>
 
-2003-07-16  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclEvent.c ([::tcl::Bgerror]):	Corrections to Tcl's
+	* tests/event.test:	default [interp bgerror] handler so that when
+	it falls back to a hidden [bgerror] in a safe interp, it gets the
+	right error context data. [Bug 1790274]
 
-	* generic/tclFileName.c (Tcl_GlobObjCmd):	[Bug 771840]
-	* generic/tclIOUtil.c (Tcl_FSConvertToPathType):[Bug 771947]
-	* unix/tclUnixFCmd.c (GetModeFromPermString):	[Bug 771949]
-	Silence compiler warnings about unreached lines.
+2007-09-07  Miguel Sofer  <msofer@users.sf.net>
 
-	* library/tcltest/tcltest.tcl (ProcessFlags):	Corrected broken call
-	* library/tcltest/pkgIndex.tcl:			to [lrange]. Bumped to
-	version 2.2.4. [Bug 772333]
+	* generic/tclProc.c (TclInitCompiledLocals): the refCount of resolved
+	variables was being managed without checking if they were Var or
+	VarInHash: itcl [Bug 1790184]
 
-2003-07-15  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-09-06  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/dltest/pkga.c (Pkga_EqObjCmd): Fix typo that was causing a
-	crash in load.test.
+	* generic/tclResult.c (Tcl_GetReturnOptions):	Take care that a
+	* tests/init.test:	non-TCL_ERROR code doesn't cause existing
+	-errorinfo, -errorcode, and -errorline entries to be omitted.
+	* generic/tclEvent.c:	With -errorInfo no longer lost, generate more
+	complete ::errorInfo when calling [bgerror] after a non-TCL_ERROR
+	background exception.
 
-2003-07-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-09-06  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/array.n: Added some examples from David Welton [Patch 763312]
+	* generic/tclInterp.c (Tcl_Init):	Removed constraint on ability
+	to define a custom [tclInit] before calling Tcl_Init(). Until now the
+	custom command had to be a proc. Now it can be any command.
 
-2003-07-15  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclInt.decls: New internal routine TclBackgroundException()
+	* generic/tclEvent.c:	that for the first time permits non-TCL_ERROR
+	exceptions to trigger [interp bgerror] handling. Closes a gap in TIP
+	221. When falling back to [bgerror] (which is designed only to handle
+	TCL_ERROR), convert exceptions into errors complaining about the
+	exception.
 
-	* doc/http.n:  Updated SYNOPSIS to match actual syntax of commands.
-	[Bug 756112]
+	* generic/tclInterp.c:	Convert Tcl_BackgroundError() callers to call
+	* generic/tclIO.c:	TclBackgroundException().
+	* generic/tclIOCmd.c:
+	* generic/tclTimer.c:
 
-	* unix/dltest/pkga.c:	Updated to not use Tcl_UtfNcmp and counted
-	strings instead of strcmp (not defined in any #include'd header) and
-	presumed NULL-terminated strings.
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
 
-	* README:		Bumped patch level to 8.4.4 in anticipation
-	* generic/tcl.h:	of another patch release.
-	* tools/tcl.wse.in:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure.in:
+2007-09-06  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/configure:	autoconf (2.13)
-	* win/configure:
+	* macosx/Tcl.xcode/project.pbxproj: discontinue unmaintained support
+	* macosx/Tcl.xcode/default.pbxuser: for Xcode 1.5; replace by Xcode2
+	project for use on Tiger (with Tcl.xcodeproj to be used on Leopard).
 
-	* generic/tclCompCmds.c (TclCompileIfCmd):  Prior fix of Bug 711371
-	on 2003-04-07 introduced a buffer overflow. Corrected. [Bug 771613]
+	* macosx/Tcl.xcodeproj/project.pbxproj: updates for Xcode 2.5 and 3.0.
+	* macosx/Tcl.xcodeproj/default.pbxuser:
+	* macosx/Tcl.xcode/project.pbxproj:
+	* macosx/Tcl.xcode/default.pbxuser:
+	* macosx/Tcl-Common.xcconfig:
 
-2003-07-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* macosx/README: document project changes.
 
-	* generic/tclCmdIL.c (SortCompare): Cleared up confusing error
-	message. [Bug 771539]
+2007-09-05  Don Porter	<dgp@users.sourceforge.net>
 
-2003-07-15  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclBasic.c:	Removed support for the unmaintained
+	* generic/tclExecute.c: -DTCL_GENERIC_ONLY configuration. [Bug
+	* unix/Makefile.in:	1264623]
 
-	* macosx/Makefile: Rewrote buildsystem for Mac OS X framework build to
-	be purely make driven; in order to become independent of Apple's
-	closed-source IDE and build tool. The changes are intended to be
-	transparent to the Makefile user, all existing make targets and cmd
-	line variable overrides should continue to work. Changed build to only
-	include tcl specific html help in Tcl.framework, the tk specific html
-	help is now included in Tk.framework.
+2007-09-04  Don Porter	<dgp@users.sourceforge.net>
 
-	* macosx/Tcl.pbproj/project.pbxproj:
-	* macosx/Tcl.pbproj/jingham.pbxuser: Changed to purely call through to
-	the make driven buildsystem; Tcl.framework is no longer assembled by
-	ProjectBuilder. Set default SYMROOT in target options to simplify
-	setting up PB (manually setting common build folder for tcl & tk no
-	longer needed).
+	* unix/Makefile.in:	It's unreliable to count on the release
+	manager to remember to `make genstubs` before `make dist`. Let the
+	Makefile remember the dependency for us.
 
-	* tools/tcltk-man2html.tcl: Added options to allow building only the
-	tcl or tk html help files; the default behaviour with none of the new
-	options is to build both, as before.
+	* unix/Makefile.in:	Corrections to `make dist` dependencies to be
+	sure that macosx/configure gets generated whenever it does not exist.
 
-	* unix/Makefile.in: Added targets for building only the tcl or tk help.
+2007-09-03  Kevin B, Kenny  <kennykb@acm.org>
 
-	* macosx/README (new): Tcl specific excerpts of tk/macosx/README.
+	* library/tzdata/Africa/Cairo:
+	* library/tzdata/America/Grand_Turk:
+	* library/tzdata/America/Port-au-Prince:
+	* library/tzdata/America/Indiana/Petersburg:
+	* library/tzdata/America/Indiana/Tell_City:
+	* library/tzdata/America/Indiana/Vincennes:
+	* library/tzdata/Antarctica/McMurdo:
+	* library/tzdata/Australia/Adelaide:
+	* library/tzdata/Australia/Broken_Hill:
+	* library/tzdata/Australia/Currie:
+	* library/tzdata/Australia/Hobart:
+	* library/tzdata/Australia/Lord_Howe:
+	* library/tzdata/Australia/Melbourne:
+	* library/tzdata/Australia/Sydney:
+	* library/tzdata/Pacific/Auckland:
+	* library/tzdata/Pacific/Chatham: Olson's tzdata2007g.
 
-	* generic/tcl.h: Updated reminder comment about editing
-	macosx/Tcl.pbproj/project.pbxproj when version number changes.
+	* generic/tclListObj.c (TclLindexFlat):
+	* tests/lindex.test (lindex-17.[01]):	Added code to detect the error
+	when a script does [lindex {} end foo]; an overaggressive optimisation
+	caused this call to return an empty object rather than an error.
 
-2003-07-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-09-03  Daniel Steffen  <das@users.sourceforge.net>
 
-	* tests/binary.test (binary-46.*): Tests to help enforce the current
-	behaviour.
-	* doc/binary.n: Documented that [binary format a] and [binary scan a]
-	do encoding conversion by dropping high bytes, unlike the rest of
-	the core. [Bug 735364]
+	* generic/tclObj.c (TclInitObjSubsystem): restore registration of the
+	"wideInt" Tcl_ObjType for compatibility with 8.4 extensions that
+	access the tclWideIntType Tcl_ObjType; add setFromAnyProc for
+	tclWideIntType.
 
-2003-07-11  Don Porter  <dgp@users.sourceforge.net>
+2007-09-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* library/package.tcl:	Corrected [pkg_mkIndex] bug reported on
-	comp.lang.tcl. The indexer was searching for newly indexed packages
-	instead of newly provided packages.
+	* doc/lsearch.n: Added note that order of results with the -all option
+	is that of the input list. It always was, but this makes it crystal.
 
-2003-07-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-08-30  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/expr.n: Tighten up the wording of some operations. [Bug 758488]
+	* generic/tclCompile.c: Added fflush() calls following all callers of
+	* generic/tclExecute.c: TclPrintByteCodeObj() so that tcl_traceCompile
+	output is less likely to get mangled when writes to stdout interleave
+	with other code.
 
-	* tests/cmdAH.test: Made tests of [file mtime] work better on FAT
-	filesystems. [Patch 760768]  Also a little general cleanup.
+2007-08-28  Don Porter	<dgp@users.sourceforge.net>
 
-2003-06-25  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclCompExpr.c:	Use a table lookup in ParseLexeme() to
+	determine lexemes with single-byte representations.
 
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Add -ieee when compiling with cc and
-	add -mieee when compiling with gcc under OSF1-V5 "Tru64" systems. [Bug
-	748957]
+	* generic/tclBasic.c:	Used unions to better clarify overloading of
+	* generic/tclCompExpr.c:	the fields of the OpCmdInfo and
+	* generic/tclCompile.h:		TclOpCmdClientData structs.
 
-2003-06-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-08-27  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/encoding.n: Corrected the docs to say that [source] uses the
-	system encoding, which it always did anyway (since 8.1) [Bug 742100]
+	* generic/tclCompExpr.c:	Call TclCompileSyntaxError() when
+	expression syntax errors are found when compiling expressions. With
+	this in place, convert TclCompileExpr to return void, since there's no
+	longer any need to report TCL_ERROR.
+	* generic/tclCompile.c: Update callers.
+	* generic/tclExecute.c:
 
-2003-06-23  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclCompCmds.c:	New routine TclCompileSyntaxError()
+	* generic/tclCompile.h: to directly compile bytecodes that report a
+	* generic/tclCompile.c: syntax error, rather than (ab)use a call to
+	TclCompileReturnCmd. Also, undo the most recent commit that papered
+	over some issues with that (ab)use. New routine produces a new opcode
+	INST_SYNTAX, which is a minor variation of INST_RETURN_IMM. Also a bit
+	of constification.
 
-	* generic/tclFCmd.c: fix to bad error message when trying to do 'file
-	copy foo ""'. [Bug 756951]
-	* tests/fCmd.test: added two new tests for the bug.
+	* generic/tclCompile.c: Move the deallocation of local LiteralTable
+	* generic/tclCompExpr.c:	entries into TclFreeCompileEnv().
+	* generic/tclExecute.c: Update callers.
 
-	* doc/FileSystem.3: documentation fix [Bug 720634]
+	* generic/tclCompExpr.c:	Force numeric and boolean literals in
+	expressions to register with their intreps intact, even if that means
+	overwriting existing intreps in already registered literals.
 
-2003-06-18  Miguel Sofer <msofer@users.sf.net>
+2007-08-25  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclNamesp.c (Tcl_Export): removed erroneous comments [Bug
-	756744]
+	* generic/tclExecute.c (TclExecuteByteCode): Added code to handle
+	* tests/expr.test (expr-23.48-53)	     integer exponentiation
+	that results in 32- and 64-bit integer results, avoiding calls to wide
+	integer exponentiation routines in this common case. [Bug 1767293]
 
-2003-06-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* library/clock.tcl (ParseClockScanFormat): Modified code to allow
+	* tests/clock.test (clock-60.*):	    case-insensitive matching
+	of time zone and month names. [Bug 1781282]
 
-	* generic/tclCmdMZ.c:
-	* tests/regexp.test: fixing of bugs related to regexp and regsub
-	matching of empty strings. Addition of a number of new tests.
+2007-08-24  Don Porter	<dgp@users.sourceforge.net>
 
-2003-06-10  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclCompExpr.c:	Register literals found in expressions
+	* tests/compExpr.test:	to restore literal sharing. Preserve numeric
+	intreps when literals are created for the first time. Correct memleak
+	in ExecConstantExprTree() and add test for the leak.
 
-	* generic/tclBasic.c:
-	* generic/tclExecute.c: let TclEvalObjvInternal call TclInterpReady
-	instead of relying on its callers to do so; fix for the part of [Bug
-	495830] that is new in 8.4.
-	* tests/interp.test: Added tests 18.9 (knownbug) and 18.10
+2007-08-24  Miguel Sofer  <msofer@users.sf.net>
 
-2003-06-09  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompile.c: replaced copy loop that tripped some compilers
+	with memmove. [Bug 1780870]
 
-	* tests/string.test (string-4.15): Added test for [string first] bug
-	reported in Tcl 8.3, where test for all-single-byte-encoded strings
-	was not reliable.
+2007-08-23  Don Porter	<dgp@users.sourceforge.net>
 
-2003-06-04  Joe Mistachkin  <joe@mistachkin.com>
+	* library/init.tcl ([auto_load_index]): Delete stray "]" that created
+	an expr syntax error (masked by a [catch]).
 
-	* tools/man2help.tcl: Added duplicate help section checking and
-	* tools/index.tcl:    corrected a comment typo for the getTopics proc
-	in index.tcl. [Bug 748700]
+	* generic/tclCompCmds.c (TclCompileReturnCmd):	Added crash protection
+	to handle callers other than TclCompileScript() failing to meet the
+	initialization assumptions of the TIP 280 code in CompileWord().
 
-2003-05-23  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompExpr.c:	Suppress the attempt to convert to
+	numeric when pre-compiling a constant expresion indicates an error.
 
-	* generic/tclObj.c (tclCmdNameType):  Converted internal rep
-	management of the cmdName Tcl_ObjType the opposite way, to always use
-	the twoPtrValue instead of always using the otherValuePtr. Previous
-	fix on 2003-05-12 broke several extensions that wanted to poke around
-	with the twoPtrValue.ptr2 value of a cmdName Tcl_Obj, like TclBlend
-	and e4graph. [Bug 726018] Thanks to George Petasis for the bug report
-	and Jacob Levy for testing assistance.
+2007-08-22  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-22  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclExecute.c (TEBC): disable the new shortcut to frequent
+	INSTs for debug builds. REVERTED (collision with alternative fix)
 
-	*** 8.4.3 TAGGED FOR RELEASE ***
+2007-08-21  Don Porter	<dgp@users.sourceforge.net>
 
-	* macosx/tclMacOSXBundle.c: fixed a problem that caused only the first
-	call to Tcl_MacOSXOpenVersionedBundleResources() for a given bundle
-	identifier to succeed. This caused the tcl runtime library not to be
-	found in all interps created after the inital one.
+	* generic/tclMain.c:	Corrected the logic of dropping the last
+	* tests/main.test:	newline from an interactively typed command.
+	[Bug 1775878]
 
-2003-05-20  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-08-21  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* changes: updated for 8.4.3
+	* tests/thread.test: thread-4.4: clear ::errorInfo in the thread as a
+	message is left here from init.tcl on windows due to no tcl_pkgPath.
 
-	* unix/Makefile.in: do not run autoconf during 'make dist' as the
-	configure is now a CVS-maintained file and should be up-to-date.
+2007-08-20  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-19  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclExecute.c (INST_SUB): fix usage of the new macro for
+	overflow detection in sums, adapt to subtraction. Lengthy comment
+	added.
 
-	* macosx/Tcl.pbproj/project.pbxproj: changed tclConfig.sh location in
-	versioned framework subdirectories to be identical to location in
-	framework toplevel; fixed stub library symbolic links to be Tcl
-	version specific.
+2007-08-19  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-05-16  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclExecute.c (Overflowing, TclIncrObj, TclExecuteByteCode):
+	Encapsulate Miguel's last change in a more mnemonic macro.
 
-	* macosx/Tcl.pbproj/project.pbxproj: updated copyright year.
+2007-08-19  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-15  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c: changed the check for overflow in sums,
+	reducing objsize, number of branches and cache misses (according to
+	cachegrind). Non-overflow for s=a+b:
+	previous
+	  ((a >= 0 || b >= 0 || s < 0) && (s >= 0 || b < 0 || a < 0))
+	now
+	  (((a^s) >= 0) || ((a^b) < 0))
+	This expresses: "a and s have the same sign or else a and b have
+	different sign".
 
-	* win/tclWinFile.c (TclpMatchInDirectory): revert glob code to r1.44
-	as 2003-04-14 optimizations broke Windows98 glob'ing.
+2007-08-19  Donal K. Fellows  <dkf@users.sf.net>
 
-	* README:	    bumped version to 8.4.3
-	* generic/tcl.h:
-	* macosx/Tcl.pbproj/project.pbxproj:
-	* tools/tcl.wse.in:
-	* unix/configure:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure:
-	* win/configure.in:
+	* doc/interp.n (RESOURCE LIMITS): Added text to better explain why
+	time limits are described using absolute times. [Bug 1752148]
 
-	* doc/socket.n: nroff font handling correction.
+2007-08-16  Miguel Sofer  <msofer@users.sf.net>
 
-	* library/encoding/gb2312-raw.enc (new): This is the original
-	gb2312.enc renamed to allow for it to still be used. This is needed by
-	Tk (unix) because X fonts with gb2312* charsets really do want the
-	original gb2312 encoding. [Bug 557030]
+	* generic/tclVar.c: improved localVarNameType caching to leverage
+	the new availability of Tcl_Obj in variable names, avoiding string
+	comparisons to verify that the cached value is usable.
 
-2003-05-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclExecute.c: check the two most frequent instructions
+	before the switch. Reduces both runtime and obj size a tiny bit.
 
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Values which can't be
-	anything but wide shouldn't be demoted to long. [consequence of HEAD
-	fixes for Bug 699060]
+2007-08-16  Don Porter	<dgp@users.sourceforge.net>
 
-2003-05-14  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclCompExpr.c:	Added a "constant" field to the OpNode
+	struct (again "free" due to alignment requirements) to mark those
+	subexpressions that are completely known at compile time. Enhanced
+	CompileExprTree() and its callers to precompute these constant
+	subexpressions at compile time. This resolves the issue raised in [Bug
+	1564517].
 
-	* library/encoding/gb2312.enc: copy euc-cn.enc over original
-	gb2312.enc. gb2312.enc appeared to not work as expected, and most uses
-	of gb2312 really mean euc-cn (which may be the cause of the problem).
-	[Bug 557030]
+2007-08-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclEnv.c (TclUnsetEnv): Another putenv() copy behavior
-	problem repaired when compiling on windows and using microsoft's
-	runtime. [Bug 736421] (gravereaux)
+	* generic/tclIOUtil.c (TclGetOpenModeEx): Only set the O_APPEND flag
+	* tests/ioUtil.test (ioUtil-4.1):	  on a channel for the 'a'
+	mode and not for 'a+'. [Bug 1773127]
 
-2003-05-13  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-08-14  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclIOUtil.c: add decl for FsThrExitProc to suppress warnings
+	* generic/tclExecute.c (INST_INVOKE*): peephole opt, do not get the
+	interp's result if it will be pushed/popped.
 
-2003-05-13  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-08-14  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclEvent.c (Tcl_Finalize): Removed unused variable to reduce
-	compiler warnings. [Bug 664745]
+	* generic/tclBasic.c:	Use fully qualified variable names for
+	* tests/thread.test:	::errorInfo and ::errorCode so that string
+	* tests/trace.test:	reported to variable traces are fully
+	qualified in agreement with Tcl 8.4 operations.
 
-2003-05-13  Joe Mistachkin  <joe@mistachkin.com>
+2007-08-14  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tcl.decls:  Changed Tcl_JoinThread parameter name from "id"
-	* generic/tclDecls.h: to "threadId". [Bug 732477]
-	* unix/tclUnixThrd.c:
-	* win/tclWinThrd.c:
-	* mac/tclMacThrd.c:
+	* unix/tclLoadDyld.c: use dlfcn API on Mac OS X 10.4 and later; fix
+	issues with loading from memory on intel and 64bit; add debug messages
 
-2003-05-13  Daniel Steffen  <das@users.sourceforge.net>
+	* tests/load.test: add test load-10.1 for loading from vfs.
 
-	* generic/tcl.decls:
-	* macosx/tclMacOSXBundle.c: added extended version of the
-	Tcl_MacOSXOpenBundleResources() API taking an extra version number
-	argument: Tcl_MacOSXOpenVersionedBundleResources(). This is needed to
-	be able to access bundle resources in versioned frameworks such as Tcl
-	and Tk, otherwise if multiple versions were installed, only the latest
-	version's resources could be accessed. [Bug 736774]
+	* unix/dltest/pkga.c:		whitespace & comment cleanup, remove
+	* unix/dltest/pkgb.c:		unused pkgf.c.
+	* unix/dltest/pkgc.c:
+	* unix/dltest/pkge.c:
+	* unix/dltest/pkgf.c (removed):
+	* unix/dltest/pkgua.c:
+	* macosx/Tcl.xcodeproj/project.pbxproj:
 
-	* unix/tclUnixInit.c (Tcl_MacOSXGetLibraryPath): use new versioned
-	bundle resource API to get tcl runtime library for TCL_VERSION.
-	[Bug 736774]
+2007-08-13  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclPlatDecls.h:
-	* generic/tclStubInit.c: regen.
+	* generic/tclExecute.c: Provide DECACHE/CACHE protection to the
+	* tests/trace.test:	Tcl_LogCommandInfo() call. [Bug 1773040]
 
-	* unix/tclUnixPort.h: worked around the issue of realpath() not being
-	thread-safe on Mac OS X by defining NO_REALPATH for threaded builds on
-	Mac OS X. [Bug 711232]
+2007-08-12  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-12  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdMZ.c (Tcl_SplitObjCmd): use TclNewStringObj macro
+	instead of calling the function.
 
-	* generic/tclInterp.c: (AliasObjCmd):	Added refCounting of the words
-	* tests/interp.test (interp-33.1):	of the target of an interp
-	alias during its execution. Also added test. [Bug 730244].
+	* generic/tcl_Obj.c (TclAllocateFreeObjects): remove unneeded memset
+	to 0 of all allocated objects.
 
-	* generic/tclBasic.c (TclInvokeObjectCommand):	objv[argc] is no
-	longer set to NULL (Tcl_CreateObjCommand docs already say that it
-	should not be accessed).
+2007-08-10  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclObj.c (tclCmdNameType):  Corrected variable use of the
-	otherValuePtr or the twoPtrValue.ptr1 fields to store a
-	(ResolvedCmdName *) as the internal rep. [Bug 726018].
+	* generic/tclInt.h: remove redundant ops in TclNewStringObj macro.
 
-	* doc/Eval.3:  Corrected prototype for Tcl_GlobalEvalObj [Bug 727622].
+2007-08-10  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-12  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclInt.h: fix the TclSetVarNamespaceVar macro, was causing a
+	leak.
 
-	* generic/tclVar.c (TclObjLookupVar): [Bug 735335] temporary fix,
-	disabling usage of tclNsVarNameType.
-	* tests/var.test (var-15.1): test for [Bug 735335]
+2007-08-10  Don Porter	<dgp@users.sourceforge.net>
 
-2003-05-10  Zoran Vasiljevic <zoran@archiware.com>
+	* generic/tclCompExpr.c:	Revise CompileExprTree() to use the
+	OpNode mark field scheme of tree traversal. This eliminates the need
+	to use magic values in the left and right fields for that purpose.
+	Also stop abusing the left field within ParseExpr() to store the
+	number of arguments in a parsed function call. CompileExprTree() now
+	determines that for itself at compile time. Then reorder code to
+	eliminate duplication.
 
-	* unix/tclUnixThrd.c: corrected [Bug 723502]
+2007-08-09  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-10  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclProc.c (TclCreateProc): better comments on the required
+	varflag values when loading precompiled procs.
 
-	* generic/tclIOUtil.c: ensure cd is thread-safe.
-	[Bug 710642] (vasiljevic)
+	* generic/tclExecute.c (INST_STORE_ARRAY):
+	* tests/trace.test (trace-2.6): whole array write traces on compiled
+	local variables were not firing. [Bug 1770591]
 
-	* win/tclWinSerial.c (SerialCloseProc): correct mem leak on closing a
-	Windows serial port [Bug 718002] (schroedter)
+2007-08-08  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): prevent string repeat crash
-	when overflow sizes were given (throws error). [Bug 714106]
+	* generic/tclProc.c (InitLocalCache): reference firstLocalPtr via
+	procPtr. codePtr->procPtr == NULL exposed by tbcload.
 
-2003-05-09  Joe Mistachkin <joe@mistachkin.com>
+2007-08-08  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclThreadAlloc.c (TclFreeAllocCache): Fixed memory leak
-	caused by treating cachePtr as a TLS index [Bug 731754].
+	* generic/tclExecute.c: Corrected failure to compile/link in the
+	-DNO_WIDE_TYPE configuration.
 
-	* win/tclAppInit.c (Tcl_AppInit): Fixed memory leaks caused by not
-	freeing the memory allocated by setargv and the async handler created
-	by Tcl_AppInit. An exit handler has been created that takes care of
-	both leaks. In addition, Tcl_AppInit now uses ckalloc instead of
-	Tcl_Alloc to allow for easier leak tracking and to be more consistent
-	with the rest of the Tcl core [Bugs 733156, 733221].
+	* generic/tclExecute.c: Corrected improper use of bignum arguments to
+	* tests/expr.test:	*SHIFT operations. [Bug 1770224]
 
-	* tools/encoding/txt2enc.c (main): Fixed memory leak caused by failing
-	to free the memory used by the toUnicode array of strings [Bug 733221]
+2007-08-07  Miguel Sofer  <msofer@users.sf.net>
 
-2003-05-05  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclInt.h: remove comments refering to VAR_SCALAR, as that
+	flag bit does not exist any longer.
+	* generic/tclProc.c (InitCompiledLocals): removed optimisation for
+	non-resolved case, as the function is never called in that case.
+	Renamed the function to InitResolvedLocals to calrify the point.
 
-	* library/tcltest/tcltest.tcl: The -returnCodes option to [test]
-	failed to recognize the symbolic name "ok" for return code 0.
-
-2003-05-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclInt.decls:	  Exporting via stubs to help xotcl adapt to
+	* generic/tclInt.h:	  VarReform.
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
 
-	* generic/tclBasic.c (Tcl_HideCommand): Fixed error message grammar
-	and spelling.
+2007-08-07  Daniel Steffen  <das@users.sourceforge.net>
 
-2003-04-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclEnv.c:	improve environ handling on Mac OS X (adapted
+	* unix/tclUnixPort.h:	from Apple changes in Darwin tcl-64).
 
-	* generic/tclFileName.c: fix to bug reported privately by Jeff where,
-	for example, 'glob -path {[tcl]} *' gets confused by the leading
-	special character (which is escaped internally), and instead lists
-	files in '/'. Bug only occurs on Windows where '\' is also a
-	directory separator. (Bug has been around at least since Tcl 8.3.)
-	* tests/fileName.test: added test for the above bug.
+	* unix/Makefile.in:	add support for compile flags specific to
+				object files linked directly into executables.
 
-2003-04-25  Don Porter  <dgp@users.sourceforge.net>
+	* unix/configure.in (Darwin): only use -seg1addr flag when prebinding;
+	use -mdynamic-no-pic flag for object files linked directly into exes;
+	support overriding TCL_PACKAGE_PATH/TCL_MODULE_PATH in environment.
 
-	* generic/tclBasic.c:  Tcl_EvalObjv() failed to honor the
-	TCL_EVAL_GLOBAL flag when resolving command names. Tcl_EvalEx passed a
-	string rep including leading whitespace and comments to
-	TclEvalObjvInternal().
+	* unix/configure: autoconf-2.59
 
-2003-04-25  Andreas Kupries  <andreask@activestate.com>
+2007-08-06  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/tclWinThrd.c: Applied [Patch 727271]. This patch changes the
-	code to catch any errors returned by the windows functions handling
-	TLS ASAP instead of waiting to get some mysterious crash later on due
-	to bogus pointers. Patch provided by Joe Mistachkin.
+	* tests/parseExpr.test: Update source file name of expr parser code.
 
-	This is a stop-gap measure to deal with the low number of ?TLS slots
-	provided by some of the variants of Windows (60-80).
+	* generic/tclCompExpr.c:	Added a "mark" field to the OpNode
+	struct, which is used to guide tree traversal. This field costs
+	nothing since alignement requirements used the memory already.
+	Rewrote ConvertTreeToTokens() to use the new field, which permitted
+	consolidation of utility routines CopyTokens() and
+	GenerateTokensForLiteral().
 
-2003-04-21  Don Porter  <dgp@users.sourceforge.net>
+2007-08-06  Kevin B. Kenny  <kennykb@users.sf.net>
 
-	* library/tcltest/tcltest.tcl:	When the return code of a test does
-	not meet expectations, report that as the reason for test failure,
-	and do not attempt to check the test result for correctness. [Bug
-	725253]
+	* generic/tclGetDate.y: Added a cast to the definition of YYFREE to
+				silence compiler warnings.
+	* generic/tclDate.c:	Regenerated
+	* win/tclWinTest.c:	Added a cast to GetSecurityDescriptorDacl call
+				to silence compiler warnings.
 
-2003-04-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-08-04  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclExecute.c (ExprCallMathFunc): remove incorrect
-	extraneous cast from Tcl_WideAsDouble.
+	* generic/tclInt.decls:	  Exporting via stubs to help itcl adapt to
+	* generic/tclInt.h:	  VarReform. Added localCache initialization
+	* generic/tclIntDecls.h:  to TclInitCompiledLocals (which only exists
+	* generic/tclProc.c:	  for itcl).
+	* generic/tclStubInit.c:
+	* generic/tclVar.c:
 
-2003-04-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-08-01  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* doc/open.n:		Moved serial port options from [fconfigure]
-	* doc/fconfigure.n:	to [open] as it is up to the creator of a
-				channel to describe the channel's special
-				config options. [Bug 679010]
+	* library/word.tcl: Rewrote for greater efficiency. [Bug 1764318]
 
-2003-04-16  Don Porter  <dgp@users.sourceforge.net>
+2007-08-01  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* generic/tcl.h		Made changes so that the "wideInt" Tcl_ObjType
-	* generic/tclObj.c	is defined on all platforms, even those where
-	* generic/tclPort.h	TCL_WIDE_INT_IS_LONG is defined.  Also made
-	the Tcl_Value struct have a wideValue field on all platforms.  This is
-	a ***POTENTIAL INCOMPATIBILITY*** for TCL_WIDE_INT_IS_LONG platforms
-	because that struct changes size.  This is the same TIP 72
-	incompatibility that was seen on other platforms at the 8.4.0 release,
-	when this change should have happened as well.	[Bug 713562]
+	* generic/tclInt.h:	Added a TclOffset macro ala Tk_Offset to
+	* generic/tclVar.c:	abstract out 'offsetof' which may not be
+	* generic/tclExceute.c: defined (eg: msvc6).
 
-	* generic/tclInt.h:  New internal macros TclGetWide() and
-	TclGetLongFromWide() to deal with both forms of the "wideInt"
-	Tcl_ObjType, so that conditional TCL_WIDE_INT_IS_LONG code
-	is confined to the header file.
+2007-08-01  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclCmdAH.c:	Replaced most coding that was conditional
-	* generic/tclCmdIL.c:	on TCL_WIDE_INT_IS_LONG with code that
-	* generic/tclExecute.c: works across platforms, sometimes using
-	* generic/tclTest.c:	the new macros above to do it.
-	* generic/tclUtil.c:
-	* generic/tclVar.c:
+	* generic/tclVar.c (TclCleanupVar): fix [Bug 1765225], thx Larry
+	Virden.
 
-2003-04-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-07-31  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/socket.n: Added a paragraph to remind people to specify
-	their encodings when using sockets. [Bug 630621]
+	* doc/Hash.3:
+	* generic/tclHash.c:
+	* generic/tclObj.c:
+	* generic/tclThreadStorage.c: (changes part of the patch below)
+	Stop Tcl_CreateHashVar from resetting hPtr->clientData to NULL after
+	calling the allocEntryProc for a custom table.
 
-2003-04-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tcl.h:
+	* generic/tclBasic.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCompCmds.c:
+	* generic/tclCompile.c:
+	* generic/tclCompile.h:
+	* generic/tclExecute.c:
+	* generic/tclHash.c:
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclLiteral.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclProc.c:
+	* generic/tclThreadStorage.c:
+	* generic/tclTrace.c:
+	* generic/tclVar.c: VarReform [Patch 1750051]
+
+	*** POTENTIAL INCOMPATIBILITY *** (tclInt.h and tclCompile.h)
+	Extensions that access internals defined in tclInt.h and/or
+	tclCompile.h may lose both binary and source compatibility. The
+	relevant changes are:
+	1. 'struct Var' is completely changed, all acceses to its internals
+	   (either direct or via the TclSetVar* and TclIsVar* macros) will
+	   malfunction. Var flag values and semantics changed too.
+	2. 'struct Bytecode' has an additional field that has to be
+	   initialised to NULL
+	3. 'struct Namespace' is larger, as the varTable is now one pointer
+	   larger than a Tcl_HashTable. Direct access to its fields will
+	   malfunction.
+	4. 'struct CallFrame' grew one more field (the second such growth with
+	   respect to Tcl8.4).
+	5. API change for the functions TclFindCompiledLocal, TclDeleteVars
+	   and many internal functions in tclVar.c
+
+	Additionally, direct access to variable hash tables via the standard
+	Tcl_Hash* interface is to be considered as deprecated. It still works
+	in the present version, but will be broken by further specialisation
+	of these hash tables. This concerns especially the table of array
+	elements in an array, as well as the varTable field in the Namespace
+	struct.
+
+2007-07-31  Miguel Sofer  <msofer@users.sf.net>
+
+	* unix/configure.in: allow use of 'inline' in Tcl sources. [Patch
+	* win/configure.in:  1754128]
+	* win/makefile.vc:   Regen with autoconf 2.61
+
+2007-07-31  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* unix/tclUnixInit.c (TclpSetVariables): Use the thread-safe getpwuid
+	replacement to fill the tcl_platform(user) field as it is not subject
+	to spoofing. [Bug 681877]
+
+	* unix/tclUnixCompat.c: Simplify the #ifdef logic.
+
+	* unix/tclUnixChan.c (FileWatchProc): Fix test failures.
+
+2007-07-30  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* unix/tclUnixChan.c (SET_BITS, CLEAR_BITS): Added macros to make this
+	file clearer.
+
+2007-07-24  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclBasic.c (TEOvI, GetCommandSource):
+	* generic/tclExecute.c (TEBC, TclGetSrcInfoForCmd):
+	* generic/tclInt.h:
+	* generic/tclTrace.c (TclCheck(Interp|Execution)Traces):
+	Removed the need for TEBC to inspect the command before calling TEOvI,
+	leveraging the TIP 280 infrastructure. Moved the generation of a
+	correct nul-terminated command string away from the trace code, back
+	into TEOvI/GetCommandSource.
 
-	* doc/CrtMathFnc.3: Functions also have to deal with wide ints,
-	but this was not documented. [Bug 709720]
+2007-07-20  Andreas Kupries  <andreask@activestate.com>
 
-2003-04-15  Kevin Kenny  <kennykb@acm.org>
+	* library/platform/platform.tcl: Fixed bug in 'platform::patterns'
+	* library/platform/pkgIndex.tcl: where identifiers not matching
+	* unix/Makefile.in: the special linux and solaris forms would not
+	* win/Makefile.in: get 'tcl' as an acceptable platform added to
+	* doc/platform.n: the result. Bumped package to version 1.0.3 and
+	* doc/platform_shell.n: updated documentation and Makefiles. Also
+	fixed bad version info in the documentation of platform::shell.
 
-	* win/tclWinTime.c: Corrected use of types to make compilation
-	compatible with VC++5.
+2007-07-19  Don Porter	<dgp@users.sourceforge.net>
 
-2003-04-14  Kevin Kenny  <kennykb@acm.org>
+	* generic/tclParse.c:	In contexts where interp and parsePtr->interp
+	might be different, be sure to use the latter for error reporting.
+	Also pulled the interp argument back out of ParseTokens() since we
+	already had a parsePtr->interp to work with.
 
-	* win/tclWinFile.c: added conditionals to restore compilation on
-	VC++6, which was broken by recent changes.
+2007-07-18  Don Porter	<dgp@users.sourceforge.net>
 
-2003-04-14  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclCompExpr.c:	Removed unused arguments and variables
 
-	Merged various bug fixes from current cvs head:
+2007-07-17  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/cmdAH.test: better fix to test suite problem if /home is a
-	symlink [Bug 703264]
+	* generic/tclCompExpr.c (ParseExpr):	While adding comments to
+	explain the operations of ParseExpr(), made significant revisions to
+	the code so it would be easier to explain, and in the process made the
+	code simpler and clearer as well.
 
-	* generic/tclIOUtil.c: fix bad error message with 'cd ""' [Bug 704917]
-	* win/tclWinFile.c:
-	* win/tclWin32Dll.c:
-	* win/tclWinInt.h: allow Tcl to differentiate between reparse points
-	which are symlinks and mounted volumes, and correctly handle the
-	latter. This involves some elaborate code to find the actual drive
-	letter (if possible) corresponding to a mounted volume. [Bug 697862]
-	* tests/fileSystem.test: add constraints to stop tests running in
-	ordinary tcl interpreter. [Bug 705675]
-	* generic/tclIOUtil.c: Some re-arrangement of code to bring it closer
-	to CVS HEAD. No functional changes.
+2007-07-15  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/fCmd.test:
-	* win/tclWinFile.c: added some filesystem optimisation to the
-	'glob' implementation, and some new tests.
+	* generic/tclCompExpr.c:	More commentary.
+	* tests/parseExpr.test:		Several tests of syntax error messages
+	to check that when expression substrings are truncated they leave
+	visible the context relevant to the reported error.
 
-	* tests/winFile.test:
-	* tests/ioUtil.test:
-	* tests/unixFCmd.test: renumbered tests with duplicate numbers. [Bug
-	710361]
+2007-07-12  Don Porter	<dgp@users.sourceforge.net>
 
-2003-04-12  Kevin Kenny  <kennykb@acm.org>
+	* generic/tclCompExpr.c:	Factored out, corrected, and commented
+	common code for reporting syntax errors in LEAF elements.
 
-	* tests/clock.test: Renumbered test cases to avoid duplicates [Bug
-	710310].
-	* tests/winTime.test:
-	* win/tclWinTest.c (TestwinclockCmd, TestwinsleepCmd):
-	* win/tclWinTime.c (Tcl_WinTime, UpdateTimeEachSecond,
-	(ResetCounterSamples, AccumulateSample, SAMPLES, TimeInfo): Made
-	substantial changes to the phase-locked loop (replaced an IIR filter
-	with an FIR one) in a quest for improved loop stability (Bug not
-	logged at SF, but cited in private communication from Jeff Hobbs).
+2007-07-11  Miguel Sofer  <msofer@users.sf.net>
 
-2003-04-11  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCompCmds.c (TclCompileWhileCmd):
+	* generic/tclCompile.c (TclCompileScript):
+	Corrected faulty avoidance of INST_START_CMD when the first opcode in
+	a script is within a loop (as produced by 'while 1'), so that the
+	corresponding command is properly counted. [Bug 1752146]
+
+2007-07-11  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCompExpr.c:	Added a "parseOnly" flag argument to
+	ParseExpr() to indicate whether the caller is Tcl_ParseExpr(), with an
+	end goal of filling a Tcl_Parse with Tcl_Tokens representing the
+	parsed expression, or TclCompileExpr() with the goal of compiling and
+	executing the expression. In the latter case, more aggressive
+	conversion of QUOTED and BRACED lexeme to literals is done. In the
+	former case, all such conversion is avoided, since Tcl_Token
+	production would revert it anyway. This enables simplifications to the
+	GenerateTokensForLiteral() routine as well.
+
+2007-07-10  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCompExpr.c:	Added a field for operator precedence
+	to be stored directly in the parse tree. There's no memory cost to
+	this addition, since that memory would have been lost to alignment
+	issues anyway. Also, converted precedence definitions and lookup
+	tables to use symbolic constants instead of raw number for improved
+	readability, and continued extending/improving/correcting comments.
+	Removed some unused counter variables. Renamed some variables for
+	clarity and replaced some cryptic logic with more readable macros.
+
+2007-07-09  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCompExpr.c:	Revision so that the END lexeme never
+	gets inserted into the parse tree. Later tree traversal never reaches
+	it since its location in the tree is not variable. Starting and
+	stopping with the START lexeme (node 0) is sufficient. Also finished
+	lexeme code commentary.
+
+	* generic/tclCompExpr.c:	Added missing creation and return of
+	the Tcl_Parse fields that indicate error conditions. [Bug 1749987]
+
+2007-07-05  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd,STR_IS_INT):  Corrected
-	inconsistent results of [string is integer] observed on systems
-	where sizeof(long) != sizeof(int). [Bug 718878]
-	* tests/string.test: Added tests for Bug 718878.
-	* doc/string.n: Clarified that [string is integer] accepts
-	32-bit integers.
+	* library/init.tcl (unknown):	Corrected inconsistent error message
+	in interactive [unknown] when empty command is invoked. [Bug 1743676]
 
-2003-04-11  Andreas Kupries  <andreask@activestate.com>
+2007-07-05  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclIO.c (UpdateInterest): When dropping interest in
-	TCL_READABLE now dropping interest in TCL_EXCEPTION too. This fixes a
-	bug where Expect detects eof on a file prematurely on Solaris 2.6 and
-	higher. A much more complete explanation is in the code itself (40
-	lines of comments for a one-line change :)
+	* generic/tclNamesp.c (SetNsNameFromAny):
+	* generic/tclObj.c (SetCmdNameFromAny): Avoid unnecessary
+	ckfree/ckalloc when the old structs can be reused.
 
-2003-04-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-07-04  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/binary.n: Fixed typo in [binary format w] desc. [Bug 718543]
+	* generic/tclNamesp.c: Fix case where a FQ cmd or ns was being cached
+	* generic/tclObj.c:    in a different interp, tkcon. [Bug 1747512]
 
-2003-04-08  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-07-03  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCmdAH.c (Tcl_ErrorObjCmd): Strings are only empty if they
-	have zero length, not if their first byte is zero, so fix test
-	guarding Tcl_AddObjErrorInfo to take this into account. [Bug reported
-	by Don Porter; no bug-id.]
+	* generic/tclCompExpr.c:	Revised #define values so that there
+	is now more expansion room to define more BINARY operators.
 
-2003-04-07  Don Porter  <dgp@users.sourceforge.net>
+2007-07-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclCompCmds.c (TclCompileIfCmd):  Corrected string limits of
-	arguments interpolated in error messages. [Bug 711371]
+	* generic/tclHash.c (CompareStringKeys): Always use the strcmp()
+	version; the operation is functionally equivalent, the speed is
+	identical (up to measurement limitations), and yet the code is
+	simpler. [FRQ 951168]
 
-	* generic/tclCmdMZ.c (TraceExecutionProc):  Added missing
-	Tcl_DiscardResult() call to avoid memory leak.
+2007-07-02  Don Porter	<dgp@users.sourceforge.net>
 
-2003-04-07  Donal K. Fellows  <zzcgudf@ernie.mvc.mcc.ac.uk>
+	* generic/tcl.h:	Removed TCL_PRESERVE_BINARY_COMPATIBILITY and
+	* generic/tclHash.c:	any code enabled when it is set to 0. We will
+	* generic/tclStubInit.c:	always want to preserve binary compat
+	of the structs that appear in the interface through the 8.* series of
+	releases, so it's pointless to drag around this never-enabled
+	alternative.
 
-	* generic/tclObj.c (tclWideIntType, TclInitObjSubsystem):
-	(SetBooleanFromAny): Make sure that tclWideIntType is defined and
-	somewhat sensible everywhere. [Bug 713562]
+	* generic/tclIO.c:	Removed dead code.
+	* unix/tclUnixChan.c:
 
-2003-04-02  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclCompExpr.c:	Removed dead code, old implementations
+	* generic/tclEvent.c:	of expr parsing and compiling, including the
+	* generic/tclInt.h:	routine TclFinalizeCompilation().
 
-	* win/configure: Regen.
-	* win/configure.in: Set stub lib flag based on new LIBFLAGSUFFIX
-	variable.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Set new LIBFLAGSUFFIX that works like
-	LIBSUFFIX, it is used when creating library names. The previous
-	implementation would generate -ltclstub85 instead of -ltclstub85s when
-	configured with --disable-shared.
+2007-06-30  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-04-01  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Plug a memory leak caused by a
+	missing Tcl_DecrRefCount on an error path. [Bug 1717186]
 
-	* tests/README: Direct [source] of *.test files is no longer
-	recommended. The tests/*.test files should only be evaluated under the
-	control of the [runAllTests] command in tests/all.tcl.
+2007-06-30  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-2003-03-27  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclThread.c: Prevent RemeberSyncObj() from growing the sync
+	object lists by reusing already free'd slots, if possible. See
+	discussion on Bug 1726873 for more information.
 
-	* tests/encoding.test:
-	* tests/proc-old.test:
-	* tests/set-old.test: Altered test numers to eliminate duplicates,
-	[Bugs 710313, 710320, 710352]
+2007-06-29  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-03-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* doc/DictObj.3 (Tcl_DictObjDone): Improved documentation of this
+	function to make it clearer how to use it. [Bug 1710795]
 
-	* tests/parseOld.test:	Altered test numers to eliminate duplicates.
-	* tests/parse.test:	[Bugs 710365, 710369]
-	* tests/expr-old.test:
-	* tests/expr.test:
+2007-06-29  Daniel Steffen  <das@users.sourceforge.net>
 
-	* tests/utf.test:	Altered test numers to eliminate duplicates.
-	* tests/trace.test:	[Bugs 710322, 710327, 710349, 710363]
-	* tests/lsearch.test:
-	* tests/list.test:
-	* tests/info.test:
-	* tests/incr-old.test:
-	* tests/if-old.test:
-	* tests/format.test:
-	* tests/foreach.test:
+	* generic/tclAlloc.c:		on Darwin, ensure memory allocated by
+	* generic/tclThreadAlloc.c:	the custom TclpAlloc()s is aligned to
+	16 byte boundaries (as is the case with the Darwin system malloc).
 
-2003-03-26  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclGetDate.y: use ckalloc/ckfree instead of malloc/free.
+	* generic/tclDate.c:	bison 1.875e
 
-	* doc/tcltest.n:
-	* library/tcltest/tcltest.tcl:	Added reporting during [configure
-	-debug 1] operations to warn about multiple uses of the same test
-	name. [FR 576693]  Replaced [regexp] and [regsub] with [string map]
-	where possible. Thanks to David Welton. [Bugs 667456,667558]
-	* library/tcltest/pkgIndex.tcl: Bumped to tcltest 2.2.3
+	* generic/tclBasic.c (TclEvalEx): fix warnings.
 
-	* tests/msgcat.test (msgcat-2.2.1): changed test name to avoid
-	duplication. [Bug 710356]
+	* macosx/Tcl.xcodeproj/project.pbxproj: better support for renamed tcl
+	* macosx/Tcl.xcodeproj/default.pbxuser: source dir; add 10.5 SDK build
+	* macosx/Tcl-Common.xcconfig:		config; remove tclMathOp.c.
 
-	* unix/dltest/pkg?.c: Changed all Tcl_InitStubs calls to pass argument
-	exact = 0, so that rebuilds are not required when Tcl bumps to a new
-	version. [Bug 701926]
+	* macosx/README: document Tcl.xcodeproj changes.
 
-2003-03-24  Miguel Sofer <msofer@users.sf.net>
+2007-06-28  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclVar.c:
-	* tests/var.test: fixing ObjMakeUpvar's lookup algorithm for the
-	created local variable, [Bugs 631741] (Chris Darroch) and [696893]
-	(David Hilker).
+	* generic/tclBasic.c:		Removed dead code, including the
+	* generic/tclExecute.c:		entire file tclMathOp.c.
+	* generic/tclInt.h:
+	* generic/tclMathOp.c (removed):
+	* generic/tclTestObj.c:
+	* win/tclWinFile.c:
 
-2003-03-22  Kevin Kenny  <kennykb@acm.org>
+	* unix/Makefile.in:	Updated to reflect deletion of tclMathOp.c.
+	* win/Makefile.in:
+	* win/makefile.bc:
+	* win/makefile.vc:
 
-	* library/dde/pkgIndex.tcl:
-	* library/reg/pkgIndex.tcl: Fixed a bug where [package require dde] or
-	[package require registry] attempted to load the release version of
-	the DLL into a debug build. [Bug 708218] Thanks to Joe Mistachkin for
-	the patch.
-	* win/makefile.vc: Added quoting around the script name in the 'test'
-	target; Joe Mistachkin insists that he has a configuration that fails
-	to launch tcltest without it, and it appears harmless otherwise.
-
-2003-03-20  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclInt.h (tclOriginalNotifier):
-	* generic/tclStubInit.c (tclOriginalNotifier):
-	* mac/tclMacNotify.c (Tcl_SetTimer,Tcl_WaitForEvent):
-	* unix/tclUnixNotfy.c (Tcl_SetTimer,Tcl_WaitForEvent,
-	(Tcl_CreateFileHandler,Tcl_DeleteFileHandler):
-	* win/tclWinNotify.c (Tcl_SetTimer,Tcl_WaitForEvent): Some linkers
-	apparently use a different representation for a pointer to a function
-	within the same compilation unit and a pointer to a function in a
-	different compilation unit. This causes checks like those in the
-	original notifier procedures to fall into infinite loops. The fix is
-	to store pointers to the original notifier procedures in a struct
-	defined in the same compilation unit as the stubs tables, and compare
-	against those values. [Bug 707174]
-
-	* generic/tclInt.h: Removed definition of ParseValue struct that is no
-	longer used.
-
-2003-03-19  Miguel Sofer <msofer@users.sf.net>
+2007-06-28  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* generic/tclCompile.c:
-	* tests/compile.test: bad command count on TCL_OUT_LINE_COMPILE
-	[Bug 705406] (Don Porter).
+	* generic/tclBasic.c:	  Silence constness warnings for TclStackFree
+	* generic/tclCompCmds.c:  when building with msvc.
+	* generic/tclFCmd.c:
+	* generic/tclIOCmd.c:
+	* generic/tclTrace.c:
 
-2003-03-19  Don Porter  <dgp@users.sourceforge.net>
+2007-06-28  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/Eval.3 (Tcl_EvalObjEx):			Corrected CONST and
-	* doc/ParseCmd.3 (Tcl_EvalTokensStandard):	return type errors in
-	documentation. [Bug 683994]
+	* generic/tclVar.c (UnsetVarStruct): fix possible segfault.
 
-2003-03-18  Kevin Kenny  <kennykb@users.sourceforge.net>
+2007-06-27  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/registry.test: Changed the conditionals to avoid an abort if
-	[testlocale] is missing, as when running the test in tclsh rather than
-	tcltest. [Bug 705677]
+	* generic/tclTrace.c:	Corrected broken trace reversal logic in
+	* generic/tclTest.c:	TclCheckInterpTraces that led to infinite loop
+	* tests/trace.test:	when multiple Tcl_CreateTrace traces were set
+	and one of them did not fire due to level restrictions. [Bug 1743931]
 
-2003-03-18  Daniel Steffen  <das@users.sourceforge.net>
+2007-06-26  Don Porter	<dgp@users.sourceforge.net>
 
-	* tools/tcltk-man2html.tcl: added support for building 'make html'
-	from inside distribution directories named with 8.x.x version numbers.
-	tcltk-man2html now uses the latest tcl8.x.x resp. tk8.x.x directories
-	found inside its --srcdir argument.
+	* generic/tclBasic.c (TclEvalEx):	Moved some arrays from the C
+	stack to the Tcl stack.
 
-2003-03-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-06-26  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/cmdAH.test: fix test suite problem if /home is a symlink
-	* generic/tclIOUtil.c: fix bad error message with 'cd ""'
-	* win/tclWinFile.c: allow Tcl to differentiate between reparse points
-	which are symlinks and mounted drives.
+	* generic/tclVar.c (UnsetVarStruct): more streamlining.
 
-	These changes fix [Bugs 703264, 704917, 697862] respectively.
+2007-06-25  Don Porter	<dgp@users.sourceforge.net>
 
-2003-03-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclExecute.c: Safety checks to avoid crashes in the
+	TclStack* routines when called with an incompletely initialized
+	interp. [Bug 1743302]
 
-	* doc/lsearch.n:	Altered documentation of -ascii options so
-	* doc/lsort.n:		they don't specify that they operate on
-				ASCII strings, which they never did
-				anyway. [Bug 703807]
+2007-06-25  Miguel Sofer  <msofer@users.sf.net>
 
-2003-03-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclVar.c (UnsetVarStruct): fixing incomplete change, more
+	streamlining.
 
-	* generic/tclCmdAH.c (Tcl_FileObjCmd): Remove assumption that file
-	times and longs are the same size. [Bug 698146]
-	(Tcl_FormatObjCmd): Stop surprising type conversions from
-	happening when working with integer and wide values. [Bug 699060]
+2007-06-24  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Only add the modifier that
-	indicates we've got a wide int when we're formatting in an integer
-	style. Stops some libc's from going mad. [Bug 702622]
-	Also tidied whitespace.
+	* generic/tclVar.c (TclDeleteCompiledLocalVars): removed inlining that
+	ended up not really optimising (limited benchmarks). Now calling
+	UnsetVarStruct (streamlined old code is #ifdef'ed out, in case better
+	benchmarks do show a difference).
 
-2003-03-13  Kevin Kenny  <kennykb@users.sourceforge.net>
+	* generic/tclVar.c (UnsetVarStruct): fixed a leak introduced in last
+	commit.
 
-	* win/makefile.vc: Backed the version to 8.4 on the 8.4 branch. (I
-	just loathe sticky tags).
+2007-06-23  Miguel Sofer  <msofer@users.sf.net>
 
-2003-03-12  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclVar.c (UnsetVarStruct, TclDeleteVars): made the logic
+	slightly clearer, eliminated some duplicated code.
 
-	* generic/tcl.h:	Removed TCL_PREFIX_IDENT and TCL_DEBUG_IDENT
-	* win/tclWinPipe.c:	from tcl.h -- they are not part of Tcl's
-	public interface.  Put them in win/tclWinPipe.c where they are used.
+	*** POTENTIAL INCOMPATIBILITY *** (tclInt.h and Var struct users)
+	The core never builds VAR_LINK variable to have traces. Such a
+	"monster", should one exist, will now have its unset traces called
+	*before* it is unlinked.
 
-	* generic/tclCmdMZ.c (Tcl_SubstObj):	Corrected and added test for
-	* tests/subst.test (subst-2.4):		Tcl_SubstObj's incorrect
-	halting of substitution at the first \x00 byte. [Bug 685106]
+2007-06-23  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclInterp.c (Tcl_InterpObjCmd):	Corrected and added
-	* tests/interp.test (interp-2.13):		test for option
-	parsing beyond objc for [interp create --].  Thanks to Marco Maggi.
-	[Bug 702383]
+	* macosx/tclMacOSXNotify.c (AtForkChild): don't call CoreFoundation
+	APIs after fork() on systems where that would lead to an abort().
 
-2003-03-11  Kevin Kenny  <kennykb@users.sourceforge.net>
+2007-06-22  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/makefile.vc: Added two missing uses of $(DBGX) so that
-	tclpip8x.dll loads without panicking on Win9x.
+	* generic/tclExecute.c: Revised TclStackRealloc() signature to better
+	* generic/tclInt.h:	parallel (and fall back on) Tcl_Realloc.
 
-2003-03-08  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclNamesp.c (TclResetShadowesCmdRefs):	Replaced
+	ckrealloc based allocations with TclStackRealloc allocations.
 
-	* doc/tcltest.n:  Added missing "-body" to example.  Thanks to
-	Helmut Giese. [Bug 700011]
+	* generic/tclCmdIL.c:	More conversions to use TclStackAlloc.
+	* generic/tclScan.c:
 
-2003-03-06  Don Porter  <dgp@users.sourceforge.net>
+2007-06-21  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/TclUtf.c (Tcl_UniCharNcasecmp):	Corrected failure to
-	* tests/utf.test (utf-25.*):	properly compare Unicode strings of
-	different case in a case insensitive manner. [Bug 699042]
+	* generic/tclBasic.c:	 Move most instances of the Tcl_Parse struct
+	* generic/tclCompExpr.c: off the C stack and onto the Tcl stack. This
+	* generic/tclCompile.c:	 is a rather large struct (> 3kB).
+	* generic/tclParse.c:
 
-2003-03-03  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-06-21  Miguel Sofer  <msofer@users.sf.net>
 
-	*** 8.4.2 TAGGED FOR RELEASE ***
+	* generic/tclBasic.c (TEOvI):		Made sure that leave traces
+	* generic/tclExecute.c (INST_INVOKE):	that were created during
+	* tests/trace.test (trace-36.2):	execution of an originally
+	untraced command do not fire [Bug 1740962], partial fix.
 
-2003-03-03  Daniel Steffen  <das@users.sourceforge.net>
+2007-06-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	Mac OS Classic specific fixes:
-	* generic/tclIOUtil.c (TclNewFSPathObj): on TCL_PLATFORM_MAC,
-	skip potential directory separator at the beginning of addStrRep.
-	* mac/tclMacChan.c (OpenFileChannel, CommonWatch): followup
-	fixes to cut and splice implementation for file channels.
-	* mac/tclMacFile.c (TclpUtime): pass native path to utime().
-	* mac/tclMacFile.c (TclpObjLink): correctly implemented creation
-	of alias files via new static proc CreateAliasFile().
-	* mac/tclMacPort.h: define S_ISLNK macro to fix stat'ing of links.
-	* mac/tclMacUtil.c (FSpLocationFromPathAlias): fix to enable
-	stat'ing of broken links.
+	* generic/tcl.h, generic/tclCompile.h, generic/tclCompile.c: Remove
+	references in comments to obsolete {expand} notation. [Bug 1740859]
 
-2003-03-03  Kevin Kenny  <kennykb@users.sourceforge.net>
+2007-06-20  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/Makefile.vc: corrected bug introduced by 'g' for debug builds.
+	* generic/tclVar.c: streamline namespace vars deletion: only compute
+	the variable's full name if the variable is traced.
 
-2003-03-03  Don Porter  <dgp@users.sourceforge.net>
+2007-06-20  Don Porter	<dgp@users.sourceforge.net>
 
-	* library/dde/pkgIndex.tcl:	dde bumped to version 1.2.1 for
-	* win/tclWinDde.c:		bundled release with Tcl 8.4.2
+	* generic/tclInt.decls: Revised the interfaces of the routines
+	* generic/tclExecute.c: TclStackAlloc and TclStackFree to make them
+	easier for callers to use (or more precisely, harder to misuse).
+	TclStackFree now takes a (void *) argument which is the pointer
+	intended to be freed. TclStackFree will panic if that's not actually
+	the memory the call will free. TSA/TSF also now tolerate receiving
+	(interp == NULL), in which case they simply fall back to be calls to
+	Tcl_Alloc/Tcl_Free.
 
-	* library/reg/pkgIndex.tcl:	registry bumped to version 1.1.1 for
-	* win/tclWinReg.c:		bundled release with Tcl 8.4.2
+	* generic/tclIntDecls.h:	make genstubs
 
-	* library/opt/pkgIndex.tcl:	updated package index to version 0.4.4
+	* generic/tclBasic.c:	Updated callers
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCompCmds.c:
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
+	* generic/tclFCmd.c:
+	* generic/tclFileName.c:
+	* generic/tclIOCmd.c:
+	* generic/tclIndexObj.c:
+	* generic/tclInterp.c:
+	* generic/tclNamesp.c:
+	* generic/tclProc.c:
+	* generic/tclTrace.c:
+	* unix/tclUnixPipe.c:
 
-2003-02-28  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-06-20  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* win/configure:
-	* win/configure.in: check for 'g' for debug build type, not 'd'.
-	* win/rules.vc (DBGX): correct to use 'g' for nmake win makefile
-	to match the cygwin makefile for debug builds. [Bug 635107]
+	* tools/tcltk-man2html.tcl: revamp of html doc output to use CSS,
+	standardized headers, subheaders, dictionary sorting of names.
 
-2003-02-28  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-06-18  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* doc/file.n: subcommand is 'file volumes' not 'file volume'
+	* tools/tcltk-man2html.tcl: clean up copyright merging and output.
+	clean up coding constructs.
 
-2003-02-27  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-06-18  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclIOUtil.c (MakeFsPathFromRelative): removed dead code
-	check of typePtr (darley).
+	* generic/tclCmdIL.c (InfoFrameCmd):
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd):
+	* generic/tclCompile.c (TclInitCompileEnv):
+	* generic/tclProc.c (Tcl_ProcObjCmd, SetLambdaFromAny): Moved the
+	CmdFrame off the C stack and onto the Tcl stack.
 
-	* tests/winTime.test: added note about PCI hardware dependency
-	issues with high performance clock.
+	* generic/tclExecute.c (TEBC):	Moved the CmdFrame off the C stack and
+	onto the Tcl stack, between the catch and the execution stacks
 
-2003-02-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-06-18  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/lsearch.test (lsearch-10.7):
-	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Stopped -start option from
-	causing an option when used with an empty list. [Bug 694232]
+	* generic/tclBasic.c (TclEvalEx,TclEvalObjEx):	Moved the CmdFrame off
+	the C stack and onto the Tcl stack.
 
-2003-02-26  Chengye Mao <chengye.geo@yahoo.com>
+2007-06-17  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/tclWinInit.c: fixed a bug in TclpSetVariables by initializing
-	dwUserNameLen with the sizeof(szUserName) before calling GetUserName.
-	Don't know if this bug has been recorded: it caused crash in starting
-	Tcl or wish in Windows.
+	* generic/tclProc.c (TclObjInterpProcCore): Minor fixes to make
+	* generic/tclExecute.c (TclExecuteByteCode): compilation debugging
+	builds work again. [Bug 1738542]
 
-2003-02-26  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-06-16  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclCmdMZ.c (TraceCommandProc): Fix mem leak when
-	deleting a command that had trace on it. [Bug 693564] (sofer)
+	* generic/tclProc.c (TclObjInterpProcCore): Use switch instead of a
+	chain of if's for a modest performance gain and a little more clarity.
 
-2003-02-25  Don Porter  <dgp@users.sourceforge.net>
+2007-06-15  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/pkgMkIndex.n:	Modified [pkg_mkIndex] to use -nocase matching
-	* library/package.tcl:	of -load patterns, to better accomodate
-	common user errors due to confusion between [package names] names
-	and [info loaded] names.
+	* generic/tclCompCmds.c:  Simplified [variable] compiler and executor.
+	* generic/tclExecute.c:	  Missed updates to "there is always a valid
+	frame".
 
-2003-02-25  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCompile.c: reverted TclEvalObjvInternal and INST_INVOKE
+	* generic/tclExecute.c: to essentially what they were previous to the
+	* generic/tclBasic.c:	commit of 2007-04-03 [Patch 1693802] and the
+	subsequent optimisations, as they break the new trace tests described
+	below.
 
-	* tests/pid.test: See below [Bug 678412].
-	* tests/io.test: Made more robust against spaces in paths [Bug 678400]
+	* generic/trace.test: added tests 36 to 38 for dynamic trace creation
+	and addition. These tests expose a change in dynamics due to a recent
+	round of optimisations. The "correct" behaviour is not described in
+	docs nor TIP 62.
 
-2003-02-25  Miguel Sofer <msofer@users.sf.net>
+2007-06-14  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/execute.test: cleaning up testobj's at the end, to avoid leak
-	warning by valgrind.
+	* generic/tclInt.decls:	  Modif to the internals of TclObjInterpProc
+	* generic/tclInt.h:	  to reduce stack consumption and improve task
+	* generic/tclIntDecls.h:  separation. Changes the interface of
+	* generic/tclProc.c:	  TclObjInterpProcCore (patching TclOO
+	simultaneously).
 
-2003-02-22  Zoran Vasiljevic  <zoran@archiwrae.com>
+	* generic/tclProc.c (TclObjInterpProcCore): simplified obj management
+	in wrongNumArgs calls.
 
-	* generic/tclEvent.c (Tcl_FinalizeThread): Fix [Bug 571002]
+2007-06-14  Don Porter	<dgp@users.sourceforge.net>
 
-2003-02-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclCompile.c: SetByteCodeFromAny() can no longer return any
+	* generic/tclExecute.c: code other than TCL_OK, so remove code that
+	* generic/tclProc.c:	formerly handled exceptional codes.
 
-	* tests/binary.test (binary-44.[34]):
-	* generic/tclBinary.c (ScanNumber): Fixed problem with unwanted
-	sign-bit propagation when scanning wide ints. [Bug 690774]
+2007-06-13  Miguel Sofer  <msofer@users.sf.net>
 
-2003-02-21  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclExecute.c (TclCompEvalObj): missed update to "there is
+	always a valid frame".
 
-	* mac/tclMacChan.c (TclpCutFileChannel, TclpSpliceFileChannel):
-	Implemented missing cut and splice procs for file channels.
+	* generic/tclProc.c (TclObjInterpProcCore): call TEBC directly instead
+	of going through TclCompEvalObj - no need to check the compilation's
+	freshness, this has already been done. This improves speed and should
+	also provide some relief to [Bug 1066755].
 
-2003-02-21  Don Porter  <dgp@users.sourceforge.net>
+2007-06-12  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* library/package.tcl (tclPkgUnknown):	Minor performance tweaks to
-	reduce the number of [file] invocations. Meant to improve startup
-	times, at least a little bit. [Patch 687906]
+	* generic/tclBasic.c (Tcl_CreateInterp): Turn the [info] command into
+	* generic/tclCmdIL.c (TclInitInfoCmd):	 an ensemble, making it easier
+	for third-party code to plug into.
 
-2003-02-20  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclIndexObj.c (Tcl_WrongNumArgs):
+	* generic/tclNamesp.c, generic/tclInt.h (tclEnsembleCmdType): Make
+	Tcl_WrongNumArgs do replacement correctly with ensembles and other
+	sorts of complex replacement strategies.
 
-	* unix/tcl.m4:
-	* unix/tclUnixPipe.c: (macosx) use vfork() instead of fork() to create
-	new processes, as recommended by Apple (vfork can be up to 100 times
-	faster thank fork on macosx).
-	* unix/configure: regen.
+2007-06-11  Miguel Sofer  <msofer@users.sf.net>
 
-2003-02-20  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c:	 comments added to explain iPtr->numLevels
+	management.
 
-	* generic/tclEncoding.c (LoadTableEncoding):
-	* library/encoding/cp932.enc:	   Correct jis round-trip encoding
-	* library/encoding/euc-jp.enc:	   by adding 'R' type to .enc files.
-	* library/encoding/iso2022-jp.enc: [Patch 689341] (koboyasi, taguchi)
-	* library/encoding/jis0208.enc:
-	* library/encoding/shiftjis.enc:
-	* tests/encoding.test:
+	* generic/tclNamesp.c:	 tweaks to Tcl_GetCommandFromObj and
+	* generic/tclObj.c:	 TclGetNamespaceFromObj; modified the usage of
+	structs ResolvedCmdName and ResolvedNsname so that the field refNsPtr
+	is NULL for fully qualified names.
 
-	* unix/tclUnixChan.c (Tcl_MakeTcpClientChannel): add
-	MakeTcpClientChannelMode that takes actual mode flags to avoid
-	hang on OS X (may be OS X bug, but patch works x-plat).
-	[Bug 689835] (steffen)
+2007-06-10  Miguel Sofer  <msofer@users.sf.net>
 
-2003-02-20  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclBasic.c:	 Further TEOvI split, creating a new
+	* generic/tclCompile.h:	 TclEvalObjvKnownCommand() function to handle
+	* generic/tclExecute.c:	 commands that are already known and are not
+	traced. INST_INVOKE now calls into this function instead of inlining
+	parts of TEOvI. Same perf, better isolation.
 
-	* doc/regsub.n: Typo fix [Bug 688943]
+	***POTENTIAL INCOMPAT*** There is a subtle issue with the timing of
+	execution traces that is changed here - first change appeared in my
+	commit of 2007-04-03 [Patch 1693802], which caused some divergence
+	between compiled and non-compiled code.
+	***THIS CHANGE IS UNDER REVIEW***
 
-2003-02-19  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-06-10  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* unix/tclUnixThrd.c (TclpReaddir):
-	* unix/tclUnixPort.h: update to Bug 689100 patch to ensure that
-	there is a defined value of MAXNAMLEN (aka NAME_MAX in POSIX) and
-	that we have some buffer allocated.
+	* README: updated links. [Bug 1715081]
 
-2003-02-19  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclExecute.c (TclExecuteByteCode): restore support for
+	INST_CALL_BUILTIN_FUNC1 and INST_CALL_FUNC1 bytecodes to support 8.4-
+	precompiled sources (math functions). [Bug 1720895]
 
-	* generic/tclStringObj.c: restored Tcl_SetObjLength() side-effect of
-	always invalidating unicode rep (if the obj has a string rep). Added
-	hasUnicode flag to String struct, allows decoupling of validity of
-	unicode rep from buffer size allocated to it (improves memory
-	allocation efficiency). [Bugs 686782, 671138, 635200]
+2007-06-10  Miguel Sofer  <msofer@users.sf.net>
 
-	* macosx/Tcl.pbproj/project.pbxproj:
-	* macosx/Makefile: reworked embedded build to no longer require
-	relinking but to use install_name_tool instead to change the
-	install_names for embedded frameworks. [Bug 644510]
+	* generic/tclInt.h:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclvar.c: new macros TclGetCurrentNamespace() and
+	TclGetGlobalNamespace(); Tcl_GetCommandFromObj and
+	TclGetNamespaceFromObj rewritten to make the logic clearer; slightly
+	faster too.
+
+2007-06-09  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_INVOKE): isolated two vars to the small
+	block where they are actually used.
+
+	* generic/tclObj.c (Tcl_GetCommandFromObj): rewritten to make the
+	logic clearer; slightly faster too.
+
+	* generic/tclBasic.c:	Split TEOv in two, by separating a processor
+	for non-TCL_OK returns. Also split TEOvI in a full version that
+	handles non-existing and traced commands, and a separate shorter
+	version for the regular case.
+
+	* generic/tclBasic.c:	Moved the generation of command strings for
+	* generic/tclTrace.c:	traces: previously in Tcl_EvalObjv(), now in
+	TclCheck[Interp|Execution]Traces(). Also insured that the strings are
+	properly NUL terminated at the correct length. [Bug 1693986]
+
+	***POTENTIAL INCOMPATIBILITY in internal API***
+	The functions TclCheckInterpTraces() and TclCheckExecutionTraces() (in
+	internal stubs) used to be noops if the command string was NULL, this
+	is not true anymore: if the command string is NULL, they generate an
+	appropriate string from (objc,objv) and use it to call the traces. The
+	caller might as well not call them with a NULL string if he was
+	expecting a noop.
+
+	* generic/tclBasic.c:	Extend usage of TclLimitReady() and
+	* generic/tclExecute.c: (new) TclLimitExceeded() macros.
+	* generic/tclInt.h:
+	* generic/tclInterp.c:
 
-	* macosx/Tcl.pbproj/project.pbxproj: preserve mod dates when running
-	'make install' to build framework (avoids bogus rebuilds of dependent
-	frameworks because tcl headers appear changed).
+	* generic/tclInt.h:	New TclCleanupCommandMacro for core usage.
+	* generic/tclBasic.c:
+	* generic/tclExecute.c:
+	* generic/tclObj.c:
 
-	* tests/ioCmd.test (iocmd-1.8): fix failure when system encoding is
-	utf-8: use iso8859-1 encoding explicitly.
+2007-06-09 Daniel Steffen  <das@users.sourceforge.net>
 
-2003-02-18  Miguel Sofer <msofer@users.sf.net>
+	* macosx/Tcl.xcodeproj/project.pbxproj: add new Tclsh-Info.plist.in.
 
-	* generic/tclCompile.c (TclCompileExprWords): remove unused variable
-	"range" [Bug 664743]
-	* generic/tclExecute.c (ExprSrandFunc): remove unused variable
-	"result" [Bug 664743]
-	* generic/tclStringObj.c (UpdateStringOfString): remove unused
-	variable "length" [Bug 664751]
-	* tests/execute.test (execute-7.30): fix for [Bug 664775]
+2007-06-08  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-02-18  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Changed [string first] and
+	* doc/string.n: [string last] so that they have clearer descriptions
+	for those people who know the adage about needles and haystacks. This
+	follows suggestions on comp.lang.tcl...
 
-	* unix/tcl.m4: [Bug 651811] Added definition of _XOPEN_SOURCE and
-	linkage of 'xnet' library to HP 11 branch. This kills a lot of
-	socket-related failures in the testsuite when Tcl was compiled in 64
-	bit mode (both PA-RISC 2.0W, and IA 64).
+2007-06-06  Miguel Sofer  <msofer@users.sf.net>
 
-	* unix/configure: Regenerated.
+	* generic/tclParse.c: fix for uninit read. [Bug 1732414]
 
-2003-02-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-06-06  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclIO.c (HaveVersion): correctly decl static
+	* macosx/Tcl.xcodeproj/project.pbxproj: add settings for Fix&Continue.
 
-	* unix/tclUnixThrd.c (TclpReaddir): reduce size of name string in
-	tsd to NAME_MAX instead of PATH_MAX. [Bug 689100] (waters)
+	* unix/configure.in (Darwin):		add plist for tclsh; link the
+	* unix/Makefile.in  (Darwin):		Tcl and tclsh plists into
+	* macosx/Tclsh-Info.plist.in (new):	their binaries in all cases.
+	* macosx/Tcl-Common.xcconfig:
 
-2003-02-18  Mo DeJong  <mdejong@users.sourceforge.net>
+	* unix/tcl.m4 (Darwin): fix CF checks in fat 32&64bit builds.
+	* unix/configure: autoconf-2.59
 
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_ENABLE_THREADS): Make sure -lpthread gets passed on
-	the link line when checking for the pthread_attr_setstacksize symbol.
+2007-06-05  Don Porter	<dgp@users.sourceforge.net>
 
-2003-02-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclBasic.c:	Added interp flag value ERR_LEGACY_COPY to
+	* generic/tclInt.h:	control the timing with which the global
+	* generic/tclNamesp.c:	variables ::errorCode and ::errorInfo get
+	* generic/tclProc.c:	updated after an error. This keeps more
+	* generic/tclResult.c:	precise compatibility with Tcl 8.4.
+	* tests/result.test (result-6.2):	[Bug 1649062]
 
-	* generic/tclTest.c: cleanup of new 'simplefs' test code, and better
-	documentation.
+2007-06-05  Miguel Sofer  <msofer@users.sf.net>
 
-2003-02-17  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclInt.h:
+	* generic/tclExecute.c: Tcl-stack reform, [Patch 1701202]
 
-	* generic/tclBasic.c (TclRenameCommand): fixing error in previous
-	commit.
+2007-06-03  Daniel Steffen  <das@users.sourceforge.net>
 
-2003-02-17  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/Makefile.in: add datarootdir to silence autoconf-2.6x warning.
 
-	* generic/tclExecute.c (TclExecuteByteCode INST_STR_MATCH):
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd STR_MATCH):
-	* generic/tclUtf.c (TclUniCharMatch):
-	* generic/tclInt.decls:	 add private TclUniCharMatch function that
-	* generic/tclIntDecls.h: does string match on counted unicode
-	* generic/tclStubInit.c: strings.  Tcl_UniCharCaseMatch has the
-	* tests/string.test:	 failing that it can't handle strings or
-	* tests/stringComp.test: patterns with embedded NULLs.	Added
-	tests that actually try strings/pats with NULLs.  TclUniCharMatch
-	should be TIPed and made public in the next minor version rev.
+2007-05-30  Don Porter	<dgp@users.sourceforge.net>
 
-2003-02-17  Miguel Sofer <msofer@users.sf.net>
+	* generic/tclBasic.c:	Removed code that dealt with
+	* generic/tclCompile.c: TCL_TOKEN_EXPAND_WORD tokens representing
+	* generic/tclCompile.h: expanded literal words. These sections were
+	mostly in place to enable [info frame] to discover line information in
+	expanded literals. Since the parser now generates a token for each
+	post-expansion word referring to the right location in the original
+	script string, [info frame] gets all the data it needs.
 
-	* generic/tclBasic.c (TclRenameCommand): 'oldFullName' object was not
-	being freed on all function exits, causing a memory leak. [Bug 684756]
+	* generic/tclInt.h:	Revised the parser so that it never produces
+	* generic/tclParse.c:	TCL_TOKEN_EXPAND_WORD tokens when parsing an
+	* tests/parse.test:	expanded literal word; that is, something like
+	{*}{x y z}. Instead, generate the series of TCL_TOKEN_SIMPLE_WORD
+	tokens to represent the words that expansion of the literal string
+	produces. [RFE 1725186]
 
-2003-02-17  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-29  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclIO.c (Tcl_GetsObj): Minor change so that eol is only
-	assigned at the top of the TCL_TRANSLATE_AUTO case block. The other
-	cases assign eol so this does not change any functionality.
+	* unix/tclUnixThrd.c (Tcl_JoinThread): fix for 64-bit handling of
+	pthread_join exit return code storage. [Bug 1712723]
 
-2003-02-17  Kevin Kenny  <kennykb@users.sourceforge.net>
+2007-05-22  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/notify.test: Removed Windows line terminators. [Bug 687913].
+	[core-stabilizer-branch]
 
-2003-02-15  Miguel Sofer <msofer@users.sf.net>
+	* unix/configure:	autoconf-2.59 (FC6 fork)
+	* win/configure:
 
-	* generic/tclBasic.c (Tcl_EvalEx):
-	* generic/tclCompExpr.c (CompileSubExpr):
-	* generic/tclCompile.c (TclCompileScript):
-	* generic/tclParse.c (Tcl_ParseCommand, ParseTokens):
-	* generic/tclParseExpr.c (ParsePrimaryExpr):
-	* tests/basic.test (47.1):
-	* tests/main.test (3.4):
-	* tests/misc.test (1.2):
-	* tests/parse.test (6.18):
-	* tests/parseExpr.test (15.35):
-	* tests/subst.test (8.6): Don Porter's fix for bad parsing of
-	nested scripts [Bug 681841].
-
-2003-02-15  Kevin Kenny  <kennykb@users.sourceforge.net>
-
-	* tests/notify.test (new-file):
-	* generic/tclTest.c (TclTest_Init, EventtestObjCmd, EventtestProc,
-	(EventTestDeleteProc):
-	* generic/tclNotify.c (Tcl_DeleteEvents): Fixed Tcl_DeleteEvents
-	not to get a pointer smash when deleting the last event in the
-	queue. Added test code in 'tcltest' and a new file of test cases
-	'notify.test' to exercise this functionality; several of the new
-	test cases fail for the original code and pass for the corrected
-	code. [Bug 673714]
-
-	* unix/tclUnixTest.c (TestfilehandlerCmd): Corrected a couple
-	of typos in error messages. [Bug 596027]
-
-2003-02-14  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* README:		Bumped to version 8.4.2.
+	* README:		Bump version number to 8.5b1
 	* generic/tcl.h:
+	* library/init.tcl:
 	* tools/tcl.wse.in:
-	* unix/configure:
 	* unix/configure.in:
-	* unix/tcl.m4:
 	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure:
 	* win/configure.in:
-	* macosx/Tcl.pbproj/project.pbxproj:
-
-	* generic/tclStringObj.c (Tcl_GetCharLength): perf tweak
-
-	* unix/tcl.m4: correct HP-UX ia64 --enable-64bit build flags
-
-2003-02-14  Kevin Kenny  <kennykb@users.sourceforge.net>
-
-	* win/tclWinTime.c: Added code to test and compensate for forward
-	leaps of the performance counter. See the MSDN Knowledge Base article
-	Q274323 for the hardware problem that makes this necessary on certain
-	machines.
-	* tests/winTime.test: Revised winTime-2.1 - it had a tolerance of
-	thousands of seconds, rather than milliseconds. (What's six orders of
-	magnitude among friends?
-
-	Both the above changes are triggered by a problem reported at
-	http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/1536811
-	although the developers find it difficult to believe that it accounts
-	for the observed behavior and suspect a fault in the RTC chip.
-
-2003-02-13  Kevin Kenny  <kennykb@users.sourceforge.net>
-
-	* win/tclWinInit.c: Added conversion from the system encoding to
-	tcl_platform(user), so that it works with non-ASCII7 user names. [Bug
-	685926]
-
-	* doc/tclsh.1: Added language to describe the handling of the
-	end-of-file character \u001a embedded in a script file. [Bug 685485]
-
-2003-02-11  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* tests/fileName.test:
-	* unix/tclUnixFile.c: fix for [Bug 685445] when using 'glob -l' on
-	broken symbolic links. Added two new tests for this bug.
-
-2003-02-11  Kevin Kenny  <kennykb@users.sourceforge.net>
-
-	* tests/http.test: Corrected a problem where http-4.14 would fail when
-	run in an environment with a proxy server. Replaced references to
-	scriptics.com by tcl.tk.
-
-2003-02-11  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* tests/lsearch.test:
-	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): protect against the case
-	that lsearch -regepx list and pattern objects are equal.
-
-	* tests/stringObj.test:
-	* generic/tclStringObj.c (Tcl_GetCharLength): correct ascii char
-	opt of 2002-11-11 to not stop early on \x00. [Bug 684699]
-
-	* tests.parse.test: remove excess EOF whitespace
-
-	* generic/tclParse.c (CommandComplete): more paranoid check to
-	break on (p >= end) instead of just (p == end).
-
-2003-02-11  Miguel Sofer <msofer@users.sf.net>
-
-	* generic/tclParse.c (CommandComplete):
-	* tests/parse.test: fix for [Bug 684744], by Don Porter.
-
-2003-02-11  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclIOUtil.c (Tcl_FSJoinPath, Tcl_FSGetNormalizedPath):
-	(UpdateStringOfFsPath): revert the cwdLen == 0 check and instead
-	follow a different code path in Tcl_FSJoinPath.
-	(Tcl_FSConvertToPathType, Tcl_FSGetNormalizedPath):
-	(Tcl_FSGetFileSystemForPath): Update string rep of path objects
-	before freeing the internal object. (darley)
-
-	* tests/fileSystem.test: added test 8.3
-	* generic/tclIOUtil.c (Tcl_FSGetNormalizedPath):
-	(UpdateStringOfFsPath): handle the cwdLen == 0 case
-
-	* unix/tclUnixFile.c (TclpMatchInDirectory): simplify the hidden
-	file match check.
-
-2003-02-10  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-18  Don Porter	<dgp@users.sourceforge.net>
 
+	* unix/configure:	autoconf-2.59 (FC6 fork)
 	* win/configure:
-	* win/configure.in: Generate error when attempting to build under
-	Cygwin. The Cygwin port of Tcl/Tk does not build and people are filing
-	bug reports under the mistaken impression that someone is actually
-	maintaining the Cygwin port. A post to comp.lang.tcl asking someone to
-	volunteer as an area maintainer has generated no results. Closing
-	[Bugs 680840, 630199, 634772] and marking as "Won't fix".
-
-2003-02-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* doc/append.n: Return value was not documented. [Bug 683188]
-
-2003-02-10  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* doc/FileSystem.3:
-	* generic/tclIOUtil.c:
-	* generic/tclInt.h:
-	* tests/fileSystem.test:
-	* unix/tclUnixFCmd.c:
-	* unix/tclUnixFile.c:
-	* win/tclWinFile.c: further filesystem optimization, applying
-	[Patch 682500]. In particular, these code examples are faster now:
-	    foreach f $flist { if {[file exists $f]} {file stat $f arr;...}}
-	    foreach f [glob -dir $dir *] { # action and/or recursion on $f }
-	    cd $dir
-	    foreach f [glob *] { # action and/or recursion on $f }
-	    cd ..
-
-	* generic/tclTest.c: Fix for [Bug 683181] where test suite left files
-	in 'tmp'.
-
-2003-02-08  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* library/safe.tcl: code cleanup of eval and string comp use.
-
-2003-02-07  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* win/tclWinFCmd.c: cleanup long lines
-	* win/tclWinFile.c: sped up pure 'glob' by a factor of 2.5 ('foreach f
-	[glob *] { file exists $f }' is still slow)
-	* tests/fileSystem.text:
-	* tests/fileName.test: added new tests to ensure correct behaviour in
-	optimized filesystem code.
 
-2003-02-07  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclTest.c:
-	* tests/fileSystem.text: fixed test 7.2 to avoid a possible crash, and
-	not change the pwd.
-
-	* tests/http.text: added comment to test 4.15, that it may fail if you
-	use a proxy server.
-
-2003-02-06  Mo DeJong  <mdejong@users.sourceforge.net>
+	* README:		Bump version number to 8.5a7
+	* generic/tcl.h:
+	* library/init.tcl:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
 
-	* generic/tclCompCmds.c (TclCompileIncrCmd):
-	* tests/incr.test: Don't include the text "(increment expression)" in
-	the errorInfo generated by the compiled version of the incr command
-	since it does not match the message generated by the non-compiled
-	version of incr. It is also not possible to match this error output
-	under Jacl, which does not support a compiler.
+	* generic/tclParse.c:	Disable and remove the ALLOW_EXPAND sections
+	* tests/info.test:	that continued to support the deprecated
+	* tests/mathop.test:	{expand} syntax. Updated the few remaining
+	users of that syntax in the test suite.
 
-2003-02-06  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-17  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclExecute.c (TclExecuteByteCode): When an error is
-	encountered reading the increment value during a compiled call to
-	incr, add a "(reading increment)" error string to the errorInfo
-	variable. This makes the errorInfo variable set by the compiled incr
-	command match the value set by the non-compiled version.
-	* tests/incr-old.test: Change errorInfo result for the compiled incr
-	command case to match the modified implementation.
-	* tests/incr.test: Add tests to make sure the compiled and
-	non-compiled errorInfo messages are the same.
+	* generic/tclExecute.c (TclLimitReady): Created a macro version of
+	Tcl_LimitReady just for TEBC, to reduce the amount of times that the
+	bytecode engine calls out to external functions on the critical path.
+	* generic/tclInterp.c (Tcl_LimitReady): Added note to remind anyone
+	doing maintenance that there is a macro version to update.
 
-2003-02-06  Don Porter  <dgp@users.sourceforge.net>
+2007-05-17  Daniel Steffen  <das@users.sourceforge.net>
 
-	* library/tcltest/tcltest.tcl:	Filename arguments to [outputChannel]
-	and [errorChannel] (also -outfile and -errfile) were [open]ed but
-	never [closed]. Also, [cleanupTests] could remove output or error
-	files. [Bug 676978].
-	* library/tcltest/pkgIndex.tcl: Bumped to version 2.2.2.
+	* generic/tcl.decls: workaround 'make checkstubs' failures from
+	tclStubLib.c MODULE_SCOPE revert. [Bug 1716117]
 
-2003-02-05  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-16  Joe English	 <jenglish@users.sourceforge.net>
 
-	* tests/interp.test:
-	* tests/set-old.test: Run test cases that depend on hash order through
-	lsort so that the tests also pass under Jacl. Does not change test
-	results under Tcl.
+	* generic/tclStubLib.c:	 Change Tcl_InitStubs(), tclStubsPtr, and the
+	auxilliary stubs table pointers back to public visibility.
 
-2003-02-04  Vince Darley  <vincentdarley@users.sourceforge.net>
+	These symbols need to be exported so that stub-enabled extensions may
+	be statically linked into an extended tclsh or Big Wish with a
+	dynamically-linked libtcl. [Bug 1716117]
 
-	* generic/tclIOUtil.c:
-	* generic/tclEvent.c:
-	* generic/tclInt.h:
-	* mac/tclMacFCmd.c:
-	* unix/tclUnixFCmd.c:
-	* win/tclWin32Dll.c:
-	* win/tclWinFCmd.c:
-	* win/tclWinInit.c:
-	* win/tclWinInt.h:
-	* tests/fileSystem.test: fix to finalization/unloading/encoding issues
-	to make filesystem much less dependent on encodings for its cleanup,
-	and therefore allow it to be finalized later in the exit process. This
-	fixes fileSystem.test-7.1. Also fixed one more bug in setting of
-	modification dates of files which have undergone cross-platform
-	copies. [Patch 676271]
-
-	* tests/basic.test:
-	* tests/exec.test:
-	* tests/fileName.test:
-	* tests/io.test: fixed some test failures when tests are run from a
-	directory containing spaces.
+2007-05-15  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/fileSystem.test:
-	* generic/tclTest.c: added regression test for the modification
-	date setting of cross-platform file copies.
+	* win/configure:	autoconf-2.59 (FC6 fork)
 
-2003-02-03  Kevin Kenny  <kennykb@users.sourceforge.net>
+	* library/reg/pkgIndex.tcl:	Bump to registry 1.2.1 to account for
+	* win/configure.in:		[Bug 1682211] fix.
+	* win/makefile.bc:
+	* win/tclWinReg.c:
 
-	* generic/tclBasic.c: Changed [trace add command] so that 'rename'
-	callbacks get fully qualified names of the command. [Bug 651271].
-	***POTENTIAL INCOMPATIBILITY***
-	* tests/trace.test: Modified the test cases for [trace add command] to
-	expect fully qualified names on the 'rename' callbacks. Added a case
-	for renaming a proc within a namespace.
-	* doc/trace.n: Added language about use of fully qualified names in
-	trace callbacks.
-
-2003-02-01  Kevin Kenny  <kennykb@users.sourceforge.net>
-
-	* generic/tclCompCmds.c: Removed an unused variable that caused
-	compiler warnings on SGI. [Bug 664379]
+2007-05-11  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* generic/tclLoad.c: Changed the code so that if Tcl_StaticPackage is
-	called to report the same package as being loaded in two interps, it
-	shows up in [info loaded {}] in both of them (previously, it didn't
-	appear in the static package list in the second.
-
-	* tests/load.test Added regression test for the above bug. [Bug
-	670042]
-
-	* generic/tclClock.c: Fixed a bug that incorrectly allowed [clock
-	clicks {}] and [clock clicks -] to be accepted as if they were [clock
-	clicks -milliseconds].
-
-	* tests/clock.test: Added regression tests for the above bug. [Bug
-	675356]
-
-	* tests/unixNotfy.test: Added cleanup of working files [Bug 675609]
-
-	* doc/Tcl.n: Added headings to the eleven paragraphs, to improve
-	formatting in the tools that attempt to extract tables of contents
-	from the manual pages. [Bug 627455]
-
-	* generic/tclClock.c: Expanded mutex protection around the setting of
-	env(TZ) and the thread-unsafe call to tzset(). [Bug 656660]
-
-2003-01-31  Don Porter  <dgp@users.sourceforge.net>
-
-	* tests/tcltest.test: Cleaned up management of file/directory
-	creation/deletion to improve "-debug 1" output. [Bug 675614] The
-	utility [slave] command failed to properly [list]-quote a constructed
-	[open] command, causing failure when the pathname contained
-	whitespace. [Bug 678415]
-
-	* tests/main.test: Stopped main.test from deleting existing file.
-	Test suite should not delete files that already exist. [Bug 675660]
-
-2003-01-28  Don Porter  <dgp@users.sourceforge.net>
-
-	* tests/main.test: Constrain tests that do not work on Windows. [Bug
-	674387]
-
-2003-01-28  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclIOUtil.c: fix to setting modification date in
-	TclCrossFilesystemCopy. Also added 'panic' in
-	Tcl_FSGetFileSystemForPath under illegal calling circumstances which
-	lead to hard-to-track-down bugs.
-
-	* generic/tclTest.c: added test suite code to allow exercising a
-	vfs-crash-on-exit bug in Tcl's finalization caused by the encodings
-	being cleaned up before unloading occurs.
-	* tests/fileSystem.test: added new 'knownBug' test 7.1 to demonstrate
-	the crash on exit.
-
-2003-01-28  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* generic/tcl.h: Add TCL_PREFIX_IDENT and TCL_DEBUG_IDENT, used only
-	by TclpCreateProcess.
-	* unix/Makefile.in: Define TCL_DBGX.
-	* win/Makefile.in: Define TCL_DBGX.
-	* win/tclWinPipe.c (TclpCreateProcess): Check that the Tcl pipe dll
-	actually exists in the Tcl bin directory and panic if it is not
-	found. Incorporate TCL_DBGX into the Tcl pipe dll name. This fixes a
-	really mysterious error that would show up when exec'ing a 16 bit
-	application under Win95 or Win98 when Tcl was compiled with symbols.
-	The error seemed to indicate that the executable could not be found,
-	but it was actually the Tcl pipe dll that could not be found.
-
-2003-01-26  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/README: Update msys+mingw URL to release 6. This version bundles
-	gcc 3.
-
-2003-01-26  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/configure: Regen.
-	* win/configure.in: Add test that checks to see if the compiler can
-	cast to a union type.
-	* win/tclWinTime.c: Squelch compiler warning about union initializer
-	by casting to union type when compiling with gcc.
-
-2003-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* generic/tclIO.c (Tcl_CutChannel, Tcl_SpliceChannel): Invoke
-	TclpCutFileChannel and TclpSpliceFileChannel.
-	* generic/tclInt.h: Declare TclpCutFileChannel and
-	TclpSpliceFileChannel.
-	* unix/tclUnixChan.c (FileCloseProc, TclpOpenFileChannel,
-	(Tcl_MakeFileChannel, TclpCutFileChannel,
-	(TclpSpliceFileChannel): Implement thread load data cut and splice for
-	file channels. This avoids an invalid memory ref when compiled with
-	-DDEPRECATED.
-	* win/tclWinChan.c (FileCloseProc, TclpCutFileChannel,
-	(TclpSpliceFileChannel): Implement thread load data cut and splice for
-	file channels. This avoids an invalid memory ref that was showing up
-	in the thread extension.
+	* generic/tclInt.h: Removed TclEvalObjEx and TclGetSrcInfoForPc from
+	tclInt.h now they are in the internal stubs table.
 
-2003-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/tclWin32Dll.c (TclpCheckStackSpace, squelch_warnings):
-	* win/tclWinChan.c (Tcl_MakeFileChannel, squelch_warnings):
-	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile, squelch_warnings):
-	Re-implement inline ASM SEH handlers for gcc. The esp and ebp
-	registers are now saved on the stack instead of in global variables so
-	that the code is thread safe. Add additional checks when TCL_MEM_DEBUG
-	is defined to be sure the values were recovered from the stack
-	properly. Remove squelch_warnings functions and add a dummy call in
-	the handler methods to squelch compiler warnings.
+2007-05-09  Don Porter	<dgp@users.sourceforge.net>
 
-2003-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclInt.h:	TclFinalizeThreadAlloc() is always defined, so
+	make sure it is also always declared (with MODULE_SCOPE).
 
-	* win/configure:
-	* win/configure.in: Define HAVE_ALLOCA_GCC_INLINE when we detect that
-	no alloca function is found in malloc.h and we are compiling with
-	GCC. Remove HAVE_NO_ALLOC_DECL define.
-	* win/tclWin32Dll.c (TclpCheckStackSpace): Don't define alloca as a
-	cdecl function. Doing this caused a tricky runtime bug because the
-	_alloca function expects the size argument to be passed in a register
-	and not on the stack. To fix this problem, we use inline ASM when
-	compiling with gcc to invoke _alloca with the size argument loaded
-	into a register.
+2007-05-09  Daniel Steffen  <das@users.sourceforge.net>
 
-2003-01-24  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclInt.h: fix warning when building threaded with -DPURIFY.
 
-	* win/tclWinDde.c (Dde_Init): clarified use of tsdPtr.
-	(DdeServerProc): better refcount handling of returnPackagePtr.
+	* macosx/Tcl.xcodeproj/project.pbxproj: add 'DebugUnthreaded' &
+	* macosx/Tcl.xcodeproj/default.pbxuser: 'DebugLeaks' configs and env
+	var settings needed to run the 'leaks' tool.
 
-	* generic/tclEvent.c (Tcl_Finalize): revert finalize change on
-	2002-12-04 to correct the issue with extensions that have TSD needing
-	to finalize that before they are unloaded. This issue needs further
-	clarification.
+2007-05-07  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/unixFCmd.test: only do groups check on unix
+	[Tcl Bug 1706140]
 
-2003-01-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclLink.c (LinkTraceProc):	Update Tcl_VarTraceProcs so
+	* generic/tclNamesp.c (Error*Read):	they call Tcl_InterpDeleted()
+	* generic/tclTrace.c (Trace*Proc):	for themselves, and do not
+	* generic/tclUtil.c (TclPrecTraceProc): rely on (frequently buggy)
+	setting of the TCL_INTERP_DESTROYED flag by the trace core.
 
-	* generic/tclStringObj.c: proper fixes for Tcl_SetObjLength and
-	Tcl_AttemptSetObjectLength dealing with string objects with both
-	pure-unicode and normal internal representations. Previous fix didn't
-	handle all cases correctly.
-	* generic/tclIO.c: Add 'Tcl_GetString()' to ensure the object has a
-	valid 'objPtr->bytes' field before manipulating it directly.
+	* generic/tclVar.c:	Update callers of TclCallVarTraces to not pass
+	in the TCL_INTERP_DESTROYED flag. Also apply filters so that public
+	routines only pass documented flag values down to lower level routines
 
-	This fixes [Bug 635200] and [Bug 671138], but may reduce performance
-	of Unicode string handling in some cases. A further patch will be
-	applied to address this, once the code is known to be correct.
+	* generic/tclTrace.c (TclCallVarTraces):	The setting of the
+	TCL_INTERP_DESTROYED flag is now done entirely within the
+	TclCallVarTraces routine, the only place it can be done right.
 
-2003-01-24  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-06  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/configure: Regen.
-	* win/configure.in: Add test to see if alloca is undefined in
-	malloc.h.
-	* win/tclWin32Dll.c (TclpCheckStackSpace): Rework the SEH exception
-	handler logic to avoid using the stack since alloca will modify the
-	stack. This was causing a nasty bug that would set the exception
-	handler to 0 because it tried to pop the previous exception handler
-	off the top of the stack.
+	* generic/tclInt.h (ExtraFrameInfo): Create a new mechanism for
+	* generic/tclCmdIL.c (InfoFrameCmd): conveying what information needs
+	to be added to the results of [info frame] to replace the hack that
+	was there before.
+	* generic/tclProc.c (Tcl_ApplyObjCmd): Use the new mechanism for the
+	[apply] command, the only part of Tcl itself that needs it (so far).
 
-2003-01-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclInt.decls (TclEvalObjEx, TclGetSrcInfoForPc): Expose
+	these two functions through the internal stubs table, necessary for
+	extensions that need to integrate deeply with TIP#280.
 
-	* doc/lset.n: Fixed fault in return values from lset in documentation
-	examples [Bug 658463] and tidied up a bit at the same time.
+2007-05-05  Donal K. Fellows  <dkf@users.sf.net>
 
-2003-01-21  Joe English  <jenglish@users.sourceforge.net>
-	* doc/namespace.n (namespace inscope): Clarified documentation
-	[Patch 670110]
+	* win/tclWinFile.c (TclpGetUserHome):	Squelch type-pun warnings in
+	* win/tclWinInit.c (TclpSetVariables):	Win-specific code not found
+	* win/tclWinReg.c (AppendSystemError):	during earlier work on Unix.
 
-2003-01-21  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-04  Kevin B. Kenny  <kennykb@acm.org>
 
-	* win/configure: Regen.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Set SHLIB_SUFFIX so that
-	TCL_SHLIB_SUFFIX will be set to a useful value in the generated
-	tclConfig.sh. Set SHLIB_LD_LIBS to "" or '${LIBS}' based on the
-	--enable-shared flag. This matches the UNIX implementation.
+	* generic/tclIO.c (TclFinalizeIOSubsystem): Added an initializer to
+	silence a spurious gcc warning about use of an uninitialized
+	variable.
+	* tests/encoding.test: Modified so that encoding tests happen in a
+	private namespace, to avoid polluting the global one. This problem was
+	discovered when running the test suite '-singleproc 1 -skip exec.test'
+	because the 'path' variable in encoding.test conflicted with the one
+	in io.test.
+	* tests/io.test: Made more of the working variables private to the
+	namespace.
 
-2003-01-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-05-02  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclCkalloc.c: change %ud to %u as appropriate.
+	* generic/tclTest.c (SimpleMatchInDirectory): Corrected a refcount
+	imbalance that affected the filesystem-[147]* tests in the test suite.
+	Thanks to Don Porter for the patch. [Bug 1710707]
+	* generic/tclPathObj.c (Tcl_FSJoinPath, Tcl_FSGetNormalizedPath):
+	Corrected several memory leaks that caused refcount imbalances
+	resulting in memory leaks on Windows. Thanks to Joe Mistachkin for the
+	patch.
 
-2003-01-17  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-01  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/tclWinDde.c (DdeServerProc): Deallocate the Tcl_Obj returned by
-	ExecuteRemoteObject if it was not saved in a connection object.
+	* generic/tclVar.c (TclPtrSetVar): fixed leak whenever newvaluePtr had
+	refCount 0 and was used for appending (but not lappending). Thanks to
+	mistachkin and kbk. [Bug 1710710]
 
-2003-01-17  Mo DeJong  <mdejong@users.sourceforge.net>
+2007-05-01  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tcl.h: Revert earlier change that defined TCL_WIDE_INT_TYPE
-	as long long and TCL_LL_MODIFIER as L when compiling with mingw. This
-	change ended up causing some test case failures when compiling with
-	mingw.
-	* generic/tclObj.c (UpdateStringOfWideInt): Describe the warning
-	generated by mingw and why it needs to be ignored so that someone is
-	not tempted to "fix" this problem again in the future.
+	* generic/tclIO.c (DeleteChannelTable): Made changes so that
+	DeleteChannelTable tries to close all open channels, not just the
+	first. [Bug 1710285]
+	* generic/tclThread.c (TclFinalizeSynchronization): Make sure that TSD
+	blocks get freed on non-threaded builds. [Bug 1710825]
+	* tests/utf.test (utf-25.1--utf-25.4): Modified tests to clean up
+	after the 'testobj' extension to avoid spurious reports of memory
+	leaks.
 
-2003-01-16  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-05-01  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclStringObj.c: Tcl_SetObjLength fix for when the object has
-	a unicode string rep. Fixes [Bug 635200]
-	* tests/stringObj.test: removed 'knownBug' constraint from test 14.1
-	now that this bug is fixed.
+	* generic/tclCmdMZ.c (STR_MAP): When [string map] has a pure dict map,
+	a missing Tcl_DictObjDone() call led to a memleak. [Bug 1710709]
 
-	* generic/tclInt.h:
-	* generic/tclBasic.c:
-	* generic/tclCmdMZ.z:
-	* tests/trace.test: execution and command tracing bug fixes and
-	cleanup. In particular fixed [Bugs 655645, 615043, 571385]
-	  - fixed some subtle cleanup problems with tracing. This required
-	    replacing Tcl_Preserve/Tcl_Release with a more robust refCount
-	    approach. Solves at least one known crash caused by memory
-	    corruption.
-	  - fixed some confusion in the code between new style traces (Tcl
-	    8.4) and the very limited 'Tcl_CreateTrace' which existed before.
-	  - made behaviour consistent with documentation (several tests even
-	    contradicted the documentation before).
-	  - fixed some minor error message details
-	  - added a number of new tests
-
-2003-01-16  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* win/tclWinSerial.c (SerialOutputProc): add casts for bytesWritten to
-	allow strict compilation (no warnings).
+2007-04-30  Daniel Steffen  <das@users.sourceforge.net>
 
-	* tests/winDde.test:
-	* win/tclWinDde.c (Tcl_DdeObjCmd): Prevent crash when empty service
-	name is passed to 'dde eval' and goto errorNoResult in request and
-	poke error cases to free up any allocated data.
-
-2003-01-16  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/tclWin32Dll.c (squelch_warnings): Squelch compiler warnings from
-	SEH ASM code.
-	* win/tclWinChan.c (squelch_warnings): Squelch compiler warnings from
-	SEH ASM code.
-	* win/tclWinDde.c: Add casts to avoid compiler warnings. Pass pointer
-	to DWORD instead of int to avoid compiler warnings.
-	* win/tclWinFCmd.c (squelch_warnings): Add casts and fixup decls to
-	avoid compiler warnings. Squelch compiler warnings from SEH ASM code.
-	* win/tclWinFile.c: Add casts and fixup decls to avoid compiler
-	warnings. Remove unused variable.
-	* win/tclWinNotify.c: Declare as DWORD instead of int to avoid
-	compiler warning.
-	* win/tclWinReg.c: Add casts to avoid compiler warning. Fix assignment
-	in if expression bug.
-	* win/tclWinSerial.c: Add casts to avoid compiler warnings. Remove
-	unused variable.
-	* win/tclWinSock.c: Add casts and fixup decls to avoid compiler
-	warnings.
-
-2003-01-14  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* generic/tclClock.c (FormatClock): corrected typo that incorrectly
-	conditionally defined savedTZEnv and savedTimeZone.
-
-2003-01-13  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	Fix mingw build problems and compiler warnings.
-
-	* generic/tcl.h: Add if defined(__MINGW32__) check to code that sets
-	the TCL_WIDE_INT_TYPE and TCL_LL_MODIFIER.
-	* generic/tclClock.c (FormatClock): Don't define savedTimeZone and
-	savedTZEnv if we are not going to use them.
-	* generic/tclEnv.c: Add cast to avoid warning.
-	* win/tclWinChan.c: Use DWORD instead of int to avoid compiler warning
-	* win/tclWinThrd.c: Only define allocLock, allocLockPtr, and dataKey
-	when TCL_THREADS is defined. This avoid a compiler warning about
-	unused variables.
-
-2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/README: Update msys + mingw URL, the new release includes the
-	released 1.0.8 version of msys which includes a number of bug fixes.
-
-2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/configure: Regen.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Pull in addition of shell32.lib to
-	LIBS_GUI that was added to the Tk tcl.m4 but never made it back into
-	the Tcl version.
-
-2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* generic/tcl.h: Skip Tcl's define of CHAR, SHORT, and LONG when
-	HAVE_WINNT_IGNORE_VOID is defined. This avoids a bunch of compiler
-	warnings when building with Cygwin or Mingw.
-	* win/configure: Regen.
-	* win/configure.in: Define HAVE_WINNT_IGNORE_VOID when we detect a
-	winnt.h that still defines CHAR, SHORT, and LONG when VOID has already
-	been defined.
-	* win/tcl.m4 (SC_LOAD_TCLCONFIG): Subst the TCL_DEFS loaded from
-	tclConfig.sh so that Tcl defines can make it into the Tk Makefile.
-
-2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/configure: Regen.
-	* win/configure.in: Check for typedefs like LPFN_ACCEPT in winsock2.h
-	and define HAVE_NO_LPFN_DECLS if not found.
-	* win/tclWinSock.c: Define LPFN_* typedefs if HAVE_NO_LPFN_DECLS is
-	defined. This fixes the build under Mingw and Cygwin, it was broken by
-	the changes made on 2002-11-26.
-
-2003-01-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* unix/Makefile.in: add 'tclsh' dependency to install targets that
+	rely on tclsh, fixes parallel 'make install' from empty build dir.
 
-	* generic/tclIOUtil.c:
-	* win/tclWinInt.h:
-	* win/tclWinInit.c: fix to new WinTcl crash on exit with vfs,
-	introduced on 2002-12-06. Encodings must be cleaned up after the
-	filesystem.
+2007-04-30  Andreas Kupries <andreask@gactivestate.com>
 
-	* win/makefile.vc: fix to minor VC++ 5.2 syntax problem
+	* generic/tclIO.c (FixLevelCode): Corrected reference count
+	mismanagement of newlevel, newcode. Changed to allocate the Tcl_Obj's
+	as late as possible, and only when actually needed. [Bug 1705778, leak
+	K29]
 
-2003-01-09  Don Porter  <dgp@users.sourceforge.net>
+2007-04-30  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclCompCmds.c (TclCompilerReturnCmd): Corrected off-by-one
-	problem with recent commit. [Bug 633204]
+	* generic/tclProc.c (Tcl_ProcObjCmd, SetLambdaFromAny): Corrected
+	reference count mismanagement on the name of the source file in the
+	TIP 280 code. [Bug 1705778, leak K02 among other manifestations]
 
-2003-01-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-04-25  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclFileName.c: remove unused variable 'macSpecialCase' [Bug
-	664749]
+	*** 8.5a6 TAGGED FOR RELEASE ***
 
-	* generic/tclIOUtil.c:
-	* generic/tclInt.h:
-	* unix/tclUnixFile.c:
-	* mac/tclMacFile.c:
-	* win/tclWinFile.c:
-	* win/tclWinInt.h:
-	* win/tclWin32Dll.c:
-	* tests/cmdAH.test: fix to non-ascii chars in paths when setting mtime
-	and atime through 'file (a|m)time $path $time'. [Bug 634151]
+	* generic/tclProc.c (TclObjInterpProcCore): Only allocate objects for
+	error message generation when associated with argument names that are
+	really used. [Bug 1705778, leak K15]
 
-2003-01-08  Don Porter  <dgp@users.sourceforge.net>
+2007-04-25  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclExecute.c (TclExprFloatError): Use the IS_NAN macro for
-	greater clarity of code.
+	* generic/tclIOUtil.c (Tcl_FSChdir): Changed the memory management so
+	that the path returned from Tcl_FSGetNativePath is not duplicated
+	before being stored as the current directory, to avoid a memory leak.
+	[Bug 1705778, leak K01 among other manifestations]
 
-2003-01-07  Don Porter  <dgp@users.sourceforge.net>
+2007-04-25  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCompCmds.c (TclCompileReturnCmd):
-	* tests/compile.test:	Corrects failure of bytecompiled [catch
-	{return}] to have result TCL_RETURN (not TCL_OK) [Bug 633204]. This
-	patch is a workaround for 8.4.X. A new opcode INST_RETURN is a better
-	long term solution for 8.5 and later.
+	* generic/tclCompExpr.c (ParseExpr):	Revised to be sure that an
+	error return doesn't prevent all literals getting placed on the
+	litList to be returned to the caller for freeing. Corrects some
+	memleaks. [Bug 1705778, leak K23]
 
-2003-01-04  David Gravereaux  <davygrvy@pobox.com>
+2007-04-25  Daniel Steffen  <das@users.sourceforge.net>
 
-	* win/makefile.vc:
-	* win/rules.vc: Fixed INSTALLDIR macro problem that blanked itself by
-	accident causing the install target to put the tree at the root of the
-	drive built on. Whoops..
+	* unix/Makefile.in (dist): add macosx/*.xcconfig files to src dist;
+	copy license.terms to dist macosx dir; fix autoheader bits.
 
-	Renamed the 'linkexten' option to be 'staticpkg'. Added 'thrdalloc' to
-	allow the switching _on_ of the thread allocator. Under testing, I
-	found it not to be benificial under windows for the purpose of the
-	application I was using it for. It was more important for this app
-	that resources for tcl threads be returned to the system rather than
-	saved/moved to the global recycler. Be extra clean or extra fast for
-	the default threaded build? Let's move to clean and allow it to be
-	switched on for users who find it benificial for their use of threads.
+2007-04-24  Miguel Sofer  <msofer@users.sf.net>
 
-2002-12-18  David Gravereaux  <davygrvy@pobox.com>
+	* generic/tclListObj.c: reverting [Patch 738900] (committed on
+	2007-04-20). Causes some Tk test breakage of unknown importance, but
+	the impact of the patch itself is likely to be so small that it does
+	not warrant investigation at this time.
 
-	* win/makefile.vc: some uses of xcopy swapped to the @$(CPY) macro.
-	Reported by Joe Mistachkin <joe@mistachkin.com>.
+2007-04-24  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-12-17  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclDictObj.c (DictKeysCmd): Rewrote so that the lock on the
+	internal representation of a dict is only set when necessary. [Bug
+	1705778, leak K04]
+	(DictFilterCmd): Added code to drop the lock in the trivial match
+	case. [Bug 1705778, leak K05]
 
-	* generic/tclNotify.c (TclFinalizeNotifier, Tcl_SetServiceMode):
-	(Tcl_ThreadAlert): Check that the stub functions are non-NULL before
-	calling them. They could be set to NULL by Tcl_SetNotifier.
+2007-04-24  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-12-16  David Gravereaux  <davygrvy@pobox.com>
+	* generic/tclBinary.c: Addressed several code paths where the error
+	return from the 'binary format' command leaked the result buffer.
+	* generic/tclListObj.c (TclLsetFlat): Fixed a bug where the new list
+	under construction was leaked in the error case. [Bug 1705778, leaks
+	K13 and K14]
 
-	* generic/tclPipe.c (TclCleanupChildren):
-	* tests/winPipe.test:
-	* win/tclWinPipe.c (Tcl_WaitPid):
-	* win/tclWinTest.c:  Gave Tcl_WaitPid the ability to return a Win32
-	exception code translated into a posix style SIG*. This allows [close]
-	to report "CHILDKILLED" without the meaning getting lost in a
-	truncated exit code. In TclCleanupChildren(), TclpGetPid() had to get
-	moved to before Tcl_WaitPid() as the the handle is removed from the
-	list taking away the ability to get the process id after the wait is
-	done. This shouldn't effect the unix implimentaion unless waitpid is
-	called with a pid of zero, meaning "any". I don't think it is..
+2007-04-24  Jeff Hobbs	<jeffh@ActiveState.com>
 
-2002-12-13  Don Porter  <dgp@users.sourceforge.net>
+	* unix/Makefile.in (dist): add platform library package to src dist
 
-	* unix/configure.in:	Updated configure of CVS snapshots to reflect
-	* win/configure.in:	the 8.4.1.1 patchlevel.
+2007-04-24  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/configure:	autoconf
-	* win/configure		autoconf
+	* generic/tclCompExpr.c (ParseExpr): Memory leak in error case; the
+	literal Tcl_Obj was not getting freed. [Bug 1705778, leak #1 (new)]
 
-2002-12-11  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclNamesp.c (Tcl_DeleteNamespace):	Corrected flaw in the
+	flag marking scheme to be sure that global namespaces are freed when
+	their interp is deleted. [Bug 1705778]
 
-	* generic/tclProc.c (ProcessProcResultCode): Fix failure to propagate
-	negative return codes up the call stack. [Bug 647307]
-	* tests/proc.test (proc-6.1): Test for Bug 647307
+2007-04-24  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclParseExpr.c (TclParseInteger):  Return 1 for the
-	string "0x" (recognize leading "0" as an integer). [Bug 648441].
-	* tests/parseExpr.test (parseExpr-19.1): Test for Bug 648441.
+	* generic/tclExecute.c (TclExecuteByteCode): Plugged six memory leaks
+	in bignum arithmetic.
+	* generic/tclIOCmd.c (Tcl_ReadObjCmd): Plugged a leak of the buffer
+	object if the physical read returned an error and the bypass area had
+	no message.
+	* generic/tclIORChan.c (TclChanCreateObjCmd): Plugged a leak of the
+	return value from the "initialize" method of a channel handler.
+	(All of the above under [Bug 1705778])
 
-2002-12-09  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-04-23  Daniel Steffen  <das@users.sourceforge.net>
 
-	* win/tclWinThrd.c (TclpMasterUnlock):
-	* generic/tclThread.c (TclFinalizeThreadData): TclpMasterUnlock must
-	exist and be called unconditional of TCL_THREADS. [Bug 651139]
+	* generic/tclCkalloc.c: fix warnings from gcc build configured with
+	* generic/tclCompile.c: --enable-64bit --enable-symbols=all.
+	* generic/tclExecute.c:
 
-2002-12-08  David Gravereaux  <davygrvy@pobox.com>
+	* unix/tclUnixFCmd.c: add workaround for crashing bug in fts_open()
+	* unix/tclUnixInit.c: without FTS_NOSTAT on 64bit Darwin 8 or earlier.
 
-	* win/tclWinSock.c (SocketThreadExitHandler, InitSockets):  Check that
-	the tsdPtr is valid before dereferencing as we call it from the exit
-	handler, too [Bug 650353]. Another WSAStartup() loaded version
-	comparison byte swap issue fixed. Although 0x0101 byte swapped is
-	still 0x0101, properly claiming which is major/minor is more correct.
+	* unix/tclLoadDyld.c (TclpLoadMemory): fix (void*) arithmetic.
 
-2002-12-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* macosx/Tcl-Common.xcconfig: enable more warnings.
 
-	* generic/tclStubInit.c: regen
-	* generic/tclIntPlatDecls.h: regen
-	* generic/tclInt.decls: added TclWinResetInterface
+	* macosx/Tcl.xcodeproj/project.pbxproj: add 'DebugMemCompile' build
+	configuration that calls configure with --enable-symbols=all; override
+	configure check for __attribute__((__visibility__("hidden"))) in Debug
+	configuration to restore availability of ZeroLink.
 
-	* win/tclWin32Dll.c (TclWinResetInterfaces):
-	* win/tclWinInit.c (TclpSetInitialEncodings, WinEncodingsCleanup):
-	add exit handler that resets the encoding information to a state where
-	we can reuse Tcl. Following these changes, it is possible to reuse Tcl
-	(following Tcl_FindExecutable or Tcl_CreateInterp) following a
-	Tcl_Finalize.
+	* macosx/tclMacOSXNotify.c: fix warnings.
 
-	* generic/tclIOUtil.c (TclFinalizeFilesystem): reset statics to their
-	original values on finalize to allow reuse of the library.
+	* macosx/tclMacOSXFCmd.c: const fixes.
 
-2002-12-04  David Gravereaux  <davygrvy@pobox.com>
+	* macosx/Tcl-Common.xcconfig:	fix whitespace.
+	* macosx/Tcl-Debug.xcconfig:
+	* macosx/Tcl-Release.xcconfig:
+	* macosx/README:
 
-	* win/tclWinPipe.c: reverted back to -r1.27 due to numerous test
-	failures that need to be resolved first. The idea was good, but the
-	details aren't.
+	* macosx/GNUmakefile:		fix/add copyright and license refs.
+	* macosx/tclMacOSXBundle.c:
+	* macosx/Tcl-Info.plist.in:
+	* macosx/Tcl.xcode/project.pbxproj:
+	* macosx/Tcl.xcodeproj/project.pbxproj:
 
-2002-12-04  David Gravereaux  <davygrvy@pobox.com>
+	* unix/configure.in: install license.terms into Tcl.framework.
+	* unix/configure: autoconf-2.59
 
-	* win/tclWinPipe.c (Tcl_WaitPid): When a process exits with an
-	exception, pass this notice on to the caller with a SIG* code rather
-	than truncating the exit code and missing the meaning.  This allows
-	TclCleanupChildren() to report "CHILDKILLED".
+2007-04-23  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclVar.c (UnsetVarStruct):	Make sure the
+	TCL_INTERP_DESTROYED flags gets passed to unset trace routines so they
+	can respond appropriately. [Bug 1705778, leak #9]
+
+2007-04-23  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclFreeCompileEnv): Tip 280's new field
+	extCmdMapPtr was not being freed. [Bug 1705778, leak #1]
+
+2007-04-23  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclCompCmds.c (TclCompileUpvarCmd): Plugged a memory leak in
+	'upvar' when compiling (a) upvar outside a proc, (b) upvar with a
+	syntax error, or (c) upvar where the frame index is not known at
+	compile time.
+	* generic/tclCompExpr.c (ParseExpr): Plugged a memory leak when
+	parsing expressions that contain syntax errors.
+	* generic/tclEnv.c (ReplaceString): Clear memory correctly when
+	growing the cache to avoid reads of uninitialised data.
+	* generic/tclIORChan.c (TclChanCreateObjCmd, FreeReflectedChannel):
+	Plugged two memory leaks.
+	* generic/tclStrToD.c (AccumulateDecimalDigit): Fixed a mistake where
+	we'd run beyond the end of the 'pow10_wide' array if a number begins
+	with a string of more than 'maxpow10_wide' zeroes.
+	* generic/tclTest.c (Testregexpobjcmd): Removed an invalid access
+	beyond the end of 'objv' in 'testregexp -about'.
+	All of these issues reported under [Bug 1705778] - detected with the
+	existing test suite, no new regression tests required.
+
+2007-04-22  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclVar.c (TclDeleteNamespaceVars): fixed access to freed
+	memory detected by valgrind: Tcl_GetCurrentNamespace was being
+	called after freeing root CallFrame (on interp deletion).
+
+2007-04-20  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclListObj.c (SetListFromAny): avoid discarding internal
+	reps of objects converted to singleton lists. [Patch 738900]
+
+2007-04-20  Kevin B. Kenny  <kennykb@acm.org>
+
+	* doc/clock.n: Corrected a silly error (transposed 'uppercase' and
+	'lowercase' in clock.n. [Bug 1656002]
+	Clarified that [clock scan] does not recognize a locale's alternative
+	calendar.
+	Deleted an entirely superfluous (and also incorrect) remark about the
+	effect of Daylight Saving Time on relative times in [clock scan]. [Bug
+	1582951]
+	* library/clock.tcl: Corrected an error in skipping over the %Ey field
+	on input.
+	* library/msgs/ja.msg:
+	* tools/loadICU.tcl: Corrected several localisation faults in the
+	Japanese locale (most notably, incorrect dates for the Emperors'
+	eras). [Bug 1637471]. Many thanks to SourceForge user 'nyademo' for
+	pointing this out and developing a fix.
+	* generic/tclPathObj.c: Corrected a 'const'ness fault that caused
+	bitter complaints from MSVC.
+	* tests/clock.test (clock-40.1, clock-58.1, clock-59.1): Corrected a
+	test case that depended on ":localtime" being able to handle dates
+	prior to the Posix epoch. [Bug 1618445] Added a test case for the
+	dates of the Japanese emperors. [Bug 1637471] Added a regression test
+	for military time zone input conversion. [Bug 1586828]
+	* generic/tclGetDate.y (MilitaryTable): Fixed an ancient bug where the
+	military NZA time zones had the signs reversed. [Bug 1586828]
+	* generic/tclDate.c: Regenerated.
+	* doc/Notifier.3: Documented Tcl_SetNotifier and Tcl_ServiceModeHook.
+	Quite against my better judgment. [Bug 414933]
+	* generic/tclBasic.c, generic/tclCkalloc.c, generic/tclClock.c:
+	* generic/tclCmdIL.c, generic/tclCmdMZ.c, generic/tclFCmd.c:
+	* generic/tclFileName.c, generic/tclInterp.c, generic/tclIO.c:
+	* generic/tclIOUtil.c, generic/tclNamesp.c, generic/tclObj.c:
+	* generic/tclPathObj.c, generic/tclPipe.c, generic/tclPkg.c:
+	* generic/tclResult.c, generic/tclTest.c, generic/tclTestObj.c:
+	* generic/tclVar.c, unix/tclUnixChan.c, unix/tclUnixTest.c:
+	* win/tclWinLoad.c, win/tclWinSerial.c: Replaced commas in varargs
+	with string concatenation where possible. [Patch 1515234]
+	* library/tzdata/America/Tegucigalpa:
+	* library/tzdata/Asia/Damascus: Olson's tzdata 2007e.
+
+2007-04-19  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/regcomp.c, generic/regc_cvec.c, generic/regc_lex.c,
+	* generic/regc_locale.c: Improve the const-correctness of the RE
+	compiler.
 
-	This has a different behavior than unix in that closing the read pipe
-	to a process sends the SIGPIPE signal which is returned as a SIGPIPE
-	exit status.  On windows, we send the process a CTRL_BREAK_EVENT and
-	get back a CONTROL_C_EXIT which is documented to mean a SIGINT which
-	seems wrong as a system, but is the correct exit status.
+2007-04-18  Miguel Sofer  <msofer@users.sf.net>
 
-2002-12-04  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclExecute.c (INST_LSHIFT): fixed a mistake introduced in
+	version 1.266 ('=' became '=='), which effectively turned the block
+	that handles native shifts into dead code. This explains why the
+	testsuite did not pick this mistake. Rewrote to make the intention
+	clear.
 
-	* generic/tclIOUtil.c: fix to redirected 'load' in virtual filesystem
-	for some Unix systems.
+	* generic/tclInt.h (TclDecrRefCount): change the order of the
+	branches, use empty 'if ; else' to handle use in unbraced outer
+	if/else conditions (as already done in tcl.h)
 
-	* generic/tclEvent.c: the filesystem must be cleaned up before the
-	encoding subsystem because it needs access to encodings. Fixes crash
-	on exit observed in embedded applications.
+	* generic/tclExecute.c: slight changes in Tcl_Obj management.
 
-	* generic/tclTestObj.c: patch omitted from previous change of
-	2002-11-13
+2007-04-17  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-12-03  Jeff Hobbs  <jeffh@ActiveState.com>
+	* library/clock.tcl: Fixed the naming of
+	::tcl::clock::ReadZoneinfoFile because (yoicks!) it was in the global
+	namespace.
+	* doc/clock.n: Clarified the cases in which legacy time zone is
+	recognized. [Bug 1656002]
 
-	* generic/tclStubLib.c (Tcl_InitStubs): prevent the cached check of
-	tclStubsPtr to allow for repeated load/unload of the Tcl dll by
-	hosting apps. [Bug 615304]
+2007-04-17  Miguel Sofer  <msofer@users.sf.net>
 
-2002-12-03  David Gravereaux  <davygrvy@pobox.com>
+	* generic/tclExecute.c: fixed checkInterp logic [Bug 1702212]
 
-	* win/tclAppInit.c (sigHandler): Protect from trying to close a NULL
-	handle.
+2007-04-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* win/tclWinPipe.c (PipeClose2Proc, TclpCreateProcess): Send a real
-	Win32 signal (CTRL_C_EVENT) when the read channel is brought down to
-	alert the child to close on its side. Start the process with
-	CREATE_NEW_PROCESS_GROUP to allow the ability to send these signals.
-	The following test case now brings down the child without the use of
-	an external [kill] command.
+	* various (including generic/tclTest.c): Complete the purge of K&R
+	function definitions from manually-written code.
 
-		% set p [open "|[info name]" w+]
-		file8d5380
-		% pid $p
-		2876
-		% close $p     <- now doesn't block in Tcl_WaitPid()
-		%
+2007-04-15  Kevin B. Kenny  <kennykb@acm.org>
 
-	* win/tclWinPipe.c (PipeClose2Proc): Changed CTRL_C_EVENT to
-	CTRL_BREAK_EVENT as it can't be ignored by the child and proved to
-	work on [open "|netstat 1" w+] where CTRL_C_EVENT didn't.
+	* generic/tclCompCmds.c: added a cast to silence a compiler error on
+	VC2005.
+	* library/clock.tcl: Restored unique-prefix matching of keywords on
+	the [clock] command. [Bug 1690041]
+	* tests/clock.test: Added rudimentary test cases for unique-prefix
+	matching of keywords.
 
-2002-11-27  David Gravereaux  <davygrvy@pobox.com>
+2007-04-14  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/tclWinPort.h: Don't turn off winsock prototypes! TclX didn't
-	like it. Even though the core doesn't use the prototypes, do offer
-	them.
+	* generic/tclExecute.c: removed some code at INST_EXPAND_SKTOP that
+	duplicates functionality already present at checkForCatch.
 
-	* win/tclWinSock.c: Removed shutdown() from the function table as it
-	wasn't referenced anywhere and cleaned-up some casting that that
-	wasn't needed.
+2007-04-12  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/tclWinSock.c: WSAStartup() loaded version comparison error which
-	resulted in 2.0 looking less than 1.1.
+	* generic/tclExecute.c: new macros OBJ_AT_TOS, OBJ_UNDER_TOS,
+	OBJ_AT_DEPTH(n) and CURR_DEPTH that remove all direct references to
+	tosPtr from TEBC (after initialisation and the code at the label
+	cleanupV_pushObjResultPtr).
 
-	* win/tclWinChan.c (Tcl_MakeFileChannel): return of DuplicateHandle()
-	incorrectly used [Bug 618852].
+2007-04-11  Miguel Sofer  <msofer@users.sf.net>
 
-2002-11-26  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclCompCmds.c: moved all exceptDepth management to the
+	macros - the decreasing half was managed by hand.
 
-	* generic/tclEncoding.c (TclFinalizeEncodingSubsystem): properly
-	cleanup all encodings by using Tcl_FirstHashEntry in the while loop.
+2007-04-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* unix/Makefile.in (valgrind): add simple valgrind target
+	* generic/tclInt.h (TclNewLiteralStringObj): New macro to make
+	allocating literal string objects (i.e. objects whose value is a
+	constant string) easier and more efficient, by allowing the omission
+	of the length argument. Based on [Patch 1529526] (afredd)
+	* generic/*.c: Make use of this (in many files).
 
-	* tests/exec.test: unset path var to allow singleproc testing
+2007-04-08  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclInterp.c (AliasCreate): preserve/release interps to
-	prevent possible FMR error in bad alias cases.
+	* generic/tclCompile (tclInstructionTable): Fixed bugs in description
+	of dict instructions.
 
-2002-11-26  David Gravereaux  <davygrvy@pobox.com>
+2007-04-07  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/tclWinPort.h:
-	* win/tclWinSock.c:  This patch does two things:
+	* generic/tclCompile (tclInstructionTable): Fixed bug in description
+	of INST_START_COMMAND.
 
-	1) Cleans-up the winsock typedefs by using the typedefs provided by
-	winsock2.h. This has no effect on how winsock is initialized; just
-	makes the source code easier to read. [Patch 561305, 561301]
+	* generic/tclExecute.c (TEBC): Small code reduction.
 
-	2) Revamps how the socket message handler thread is brought up and
-	down to allow for cleaner exits without the use of TerminateThread().
-	TerminateThread is evil. No attempt has been made to resolve [Bug
-	593810] which may need a new channel driver version for adding a
-	registering function within the transfered thread to init the handler
-	thread. IOW, initialization of the TSD structure is getting bypassed
-	through the thread extension's [thread::transfer] command.
+2007-04-06  Miguel Sofer  <msofer@users.sf.net>
 
-2002-11-26  David Gravereaux  <davygrvy@pobox.com>
+	* generic/tclExecute.c (TEBC):
+	* generic/tclNamespace.c (NsEnsembleImplementationCmd):
+	* generic/tclProc.c (InitCompiledLocals, ObjInterpProcEx)
+	(TclObjInterpProcCore, ProcCompileProc): Code reordering to reduce
+	branching and improve branch prediction (assume that forward branches
+	are typically not taken).
 
-	* win/tclWinConsole.c:
-	* win/tclWinPipe.c:
-	* win/tclWinSerial.c:
-	* win/tclWinSock.c:
-	* win/tclWinThrd.c:
-	* win/tclWinTime.c: General cleanup of all worker threads used by the
-	channel drivers. Eliminates the normal case where the worker thread is
-	terminated ('cept the winsock one). Instead, use kernel events to
-	signal a clean exit. Only when the worker thread is blocked on an I/O
-	call is the thread terminated. Essentially, this makes all other
-	channel worker threads behave like the PipeReaderThread() function for
-	it's cleaner exit behavior. This appears to fix [Bug 597924] but needs
-	3rd party confirmation to close the issue.
+2007-04-03  Miguel Sofer  <msofer@users.sf.net>
 
-2002-11-26  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclExecute.c: INST_INVOKE optimisation. [Patch 1693802]
 
-	* win/README: Update msys build env URL. This release #4 build both
-	tcl and tk without problems.
+2007-04-03  Don Porter	<dgp@users.sourceforge.net>
 
-2002-11-22  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclNamesp.c:	Revised ErrorCodeRead and ErrorInfoRead trace
+	routines so they guarantee the ::errorCode and ::errorInfo variable
+	always appear to exist. [Bug 1693252]
 
-	* library/init.tcl:	    code cleanup to reduce use of
-	* library/opt/optparse.tcl: string compare
+2007-04-03  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/interp.test: interp-14.4
-	* generic/tclInterp.c (TclPreventAliasLoop): prevent seg fault when
-	creating an alias command over the interp name. [Bug 641195]
+	* generic/tclInt.decls:	 Moved TclGetNamespaceFromObj() to the
+	* generic/tclInt.h:	 internal stubs table; regen.
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
 
-2002-11-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-04-02  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclUtil.c (SetEndOffsetFromAny): handle integer offset
-	after the "end-" prefix.
+	* generic/tclBasic.c:	  Added bytecode compilers for the variable
+	* generic/tclCompCmds.c:  linking commands: 'global', 'variable',
+	* generic/tclCompile.h:	  'upvar', 'namespace upvar' [Patch 1688593]
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclVar.c:
 
-	* generic/get.test:
-	* generic/string.test:
-	* generic/tclObj.c (SetIntFromAny, SetWideIntFromAny):
-	* generic/tclGet.c (TclGetLong, Tcl_GetInt): simplify sign handling
-	before calling strtoul(l). [Bug 634856]
+2007-04-02  Don Porter	<dgp@users.sourceforge.net>
 
-2002-11-18  David Gravereaux  <davygrvy@pobox.com>
+	* generic/tclBasic.c:	Replace arrays on the C stack and ckalloc
+	* generic/tclExecute.c: calls with TclStackAlloc calls to use memory
+	* generic/tclFCmd.c:	on Tcl's evaluation stack.
+	* generic/tclFileName.c:
+	* generic/tclIOCmd.c:
+	* generic/tclIndexObj.c:
+	* generic/tclInterp.c:
+	* generic/tclNamesp.c:
+	* generic/tclTrace.c:
+	* unix/tclUnixPipe.c:
 
-	* win/tclWinThrd.c (Tcl_CreateThread/TclpThreadExit): Fixed improper
-	compiler macros that missed the VC++ compiler. This resulted in VC++
-	builds using CreateThread()/ExitThread() in place of the proper
-	_beginthreadex()/_endthreadex(). This was a large error and am
-	surprised I missed seeing it earlier.
+2007-04-01  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-11-13  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclCompile.c (TclCompileScript, TclPrintInstruction):
+	* generic/tclExecute.c (TclExecuteByteCode): Changed the definition of
+	INST_START_CMD so that it knows how many commands start at the current
+	location. This makes the interpreter command counter correct without
+	requiring a large number of instructions to be issued. (See my change
+	from 2007-01-19 for what triggered this.)
 
-	* generic/regexpComp.test: added tests 22.*
-	* generic/tclCompCmds.c (TclCompileRegexpCmd): add left and right
-	anchoring (^ and $) recognition and check starting or ending .* to
-	extend the number of REs that can be compiled to string match or
-	string equal.
+2007-03-30  Don Porter	<dgp@users.sourceforge.net>
 
-2002-11-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclCompile.c:
+	* generic/tclCompExpr.c:
+	* generic/tclCompCmds.c:	Replace arrays on the C stack and
+	ckalloc calls with TclStackAlloc calls to use memory on Tcl's
+	evaluation stack.
 
-	* generic/tclCmdMZ.c:
-	* tests/trace.test: applied patch from Hemang Levana to fix [Bug
-	615043] in execution traces with 'return -code error'.
+	* generic/tclCmdMZ.c:	Revised [string to* $s $first $last]
+	implementation to reduce number of allocs/copies.
 
-	* generic/tclTestObj.c:
-	* tests/stringObj.test: added 'knownBug' test for [Bug 635200]
-	* generic/tclStringObj.c: corrected typos in comments
+	* tests/string.test:  More [string reverse] tests.
 
-	* generic/tclFileName.c:
-	* tests/fileName.test: applied patch for bug reported against tclvfs
-	concerning handling of Windows serial ports like 'com1', 'lpt3' by the
-	virtual filesystem code.
+2007-03-30  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/RegExp.3: clarification of the 'extendMatch' return values.
+	* generic/tclExecute.c: optimise the lookup of elements of indexed
+	arrays.
 
-2002-11-11  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-03-29  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclUtil.c (Tcl_Backslash): use TclUtfToUniChar.
-	(Tcl_StringCaseMatch): use TclUtfToUniChar and add further
-	optimizations for the one-byte/char case.
+	* generic/tclProc.c (Tcl_ApplyObjCmd):
+	* tests/apply.test (9.3): Fixed Tcl_Obj leak on error return; an
+	unneeded ref to lambdaPtr was being set and not released on an error
+	return path.
 
-	* generic/tclUtf.c: make use of TclUtfToUniChar macro throughout the
-	functions, and add extra optimization to Tcl_NumUtfChars for
-	one-byte/char case.
+2007-03-28  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclVar.c (DisposeTraceResult, CallVarTraces): add proper
-	static declarations.
+	* generic/tclCmdMZ.c (STR_REVERSE):	Implement the actual [string
+	reverse] command in terms of the new TclStringObjReverse() routine.
 
-	* generic/tclStringObj.c (Tcl_GetCharLength): optimize for the ascii
-	char case.
-	(Tcl_GetUniChar): remove unnecessary use of Tcl_UtfToUniChar.
-	(FillUnicodeRep): Use TclUtfToUniChar.
+	* generic/tclInt.h (TclStringObjReverse):	New internal routine
+	* generic/tclStringObj.c (TclStringObjReverse): that implements the
+	[string reverse] operation, making use of knowledge/surgery of the
+	String intrep to minimize the number of allocs and copies needed to do
+	the job.
 
-	* generic/tclHash.c (HashStringKey): move string++ lower to save an
-	instruction.
+2007-03-27  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclExecute.c (TclExecuteByteCode): improve INST_STR_CMP to
-	use memcmp in the one-byte/char case, also use direct index for
-	INST_STR_INDEX in that case.
+	* generic/tclCmdMZ.c (STR_MAP): Replace ckalloc calls with
+	TclStackAlloc calls.
 
-	* generic/tclEncoding.c (UtfToUtfProc, UtfToUnicodeProc):
-	(TableFromUtfProc, EscapeFromUtfProc): Use TclUtfToUniChar.
-	(UnicodeToUtfProc, TableToUtfProc): add 1-byte char optimizations
-	for Tcl_UniCharToUtf call. These improve encoded channel conversion
-	speeds by up to 20%.
+2007-03-24  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* tests/split.test: added 1-char string split tests
-	* generic/tclCmdMZ.c (Tcl_SplitObjCmd): Use TclUtfToUniChar. Also
-	added a special case for single-ascii-char splits.
-	(Tcl_StringObjCmd): Use TclUtfToUniChar. For STR_RANGE, support
-	getting ranges of ByteArrays (reverts change from 2000-05-26).
-	(TraceExecutionProc) add proper static declaration.
+	* win/tclWinThrd.c: Thread exit handler marks the current thread as
+	un-initialized. This allows exit handlers that are registered later to
+	re-initialize this subsystem in case they need to use some sync
+	primitives (cond variables) from this file again.
 
-	* generic/tclInt.h: add macro version of Tcl_UtfToUniChar
-	(TclUtfToUniChar) that does the one-byte utf-char check without
-	calling Tcl_UtfToUniChar, for use by the core. This brings notable
-	speedups for primarily ascii string handling.
+2007-03-23  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tcl.h (TCL_PATCH_LEVEL): bump to 8.4.1.1 for patchlevel
-	only. This interim number will only be reflected by [info patchlevel]
+	* generic/tclBasic.c (DeleteInterpProc): pop the root frame pointer
+	before deleting the global namespace [Bug 1658572]
 
-2002-11-11  Kevin Kenny  <kennykb@acm.org>
+2007-03-23  Kevin B. Kenny  <kennykb@acm.org>
 
-	* doc/Tcl.n: Corrected indentation of the new language. Oops.
+	* win/Makefile.in: Added code to keep a Cygwin path name from leaking
+	into LIBRARY_DIR when doing 'make test' or 'make runtest'.
 
-2002-11-10  Kevin Kenny <kennykb@acm.org>
+2007-03-22  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/Tcl.n: Added language to the Endekalogue to make it clear that
-	substitutions always take place from left to right. [Bug 635644]
+	* generic/tclCmdAH.c (Tcl_ForeachObjCmd):	Replaced arrays on the
+	C stack and ckalloc calls with TclStackAlloc calls to use memory on
+	Tcl's evaluation stack.
 
-2002-11-06  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclExecute.c: Revised GrowEvaluationStack to take an
+	argument specifying the growth required by the caller, so that a
+	single reallocation / copy is the most that will ever be needed even
+	when required growth is large.
 
-	* changes: Note TclInExit TclInThreadExit changes.
-	* generic/tclEvent.c (TclInExit, TclInThreadExit):
-	Split out functionality of TclInExit to make it clear which one should
-	be called in each situation.
-	* generic/tclInt.decls: Declare TclInThreadExit.
-	* generic/tclIntDecls.h: Regen.
-	* generic/tclStubInit.c: Regen.
-	* mac/tclMacChan.c (StdIOClose):
-	* unix/tclUnixChan.c (FileCloseProc):
-	* win/tclWinChan.c (FileCloseProc):
-	* win/tclWinConsole.c (ConsoleCloseProc):
-	* win/tclWinPipe.c (TclpCloseFile):
-	* win/tclWinSerial.c (SerialCloseProc): Invoke the new TclInThreadExit
-	method instead of TclInExit.
+2007-03-21  Don Porter	<dgp@users.sourceforge.net>
 
-2002-11-06  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclExecute.c: More ckalloc -> ckrealloc conversions.
+	* generic/tclLiteral.c:
+	* generic/tclNamesp.c:
+	* generic/tclParse.c:
+	* generic/tclPreserve.c:
+	* generic/tclStringObj.c:
+	* generic/tclUtil.c:
 
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Generate a fatal configure error if
-	no ar program can be found on the path. [Bug 582039]
-	* win/configure: Regen.
-	* win/configure.in: Check that AR, RANLIB, and RC are found on the
-	path when building with gcc.
+2007-03-20  Don Porter	<dgp@users.sourceforge.net>
 
-2002-11-03  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclEnv.c:	Some more ckalloc -> ckrealloc replacements.
+	* generic/tclLink.c:
 
-	* win/tclAppInit.c:  Calls Registry_Init() and Dde_Init() when
-	STATIC_BUILD and TCL_USE_STATIC_PACKAGES macros are set.
+2007-03-20  Kevin B. Kenny  <kennykb@acm.org>
 
-	* win/makefile.vc:
-	* win/rules.vc: linkexten option now sets the TCL_USE_STATIC_PACKAGES
-	macro which also adds the registry and dde object files to the link
-	of the shell. [Patch 479697]  Also factored some additional macros
-	that will be helpful for extension authors. Version grepping of tcl.h
-	will need to be added to complete this.
+	* generic/tclDate.c: Rebuilt, despite Donal Fellows's comment when
+	committing it that no rebuild was required.
+	* generic/tclGetDate.y: According to Donal Fellows, "Introduce modern
+	formatting standards; no need for rebuild of tclDate.c."
 
-	* win/buildall.vc.bat: Added more descriptive commentary.
+	* library/tzdata/America/Cambridge_Bay:
+	* library/tzdata/America/Havana:
+	* library/tzdata/America/Inuvik:
+	* library/tzdata/America/Iqaluit:
+	* library/tzdata/America/Pangnirtung:
+	* library/tzdata/America/Rankin_Inlet:
+	* library/tzdata/America/Resolute:
+	* library/tzdata/America/Yellowknife:
+	* library/tzdata/Asia/Choibalsan:
+	* library/tzdata/Asia/Dili:
+	* library/tzdata/Asia/Hovd:
+	* library/tzdata/Asia/Jakarta:
+	* library/tzdata/Asia/Jayapura:
+	* library/tzdata/Asia/Makassar:
+	* library/tzdata/Asia/Pontianak:
+	* library/tzdata/Asia/Ulaanbaatar:
+	* library/tzdata/Europe/Istanbul: Upgraded to Olson's tzdata2007d.
 
-2002-11-01  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclListObj.c (TclLsetList, TclLsetFlat):
+	* tests/lset.test: Changes to deal with shared internal representation
+	for lists passed to the [lset] command. Thanks to Don Porter for
+	fixing this issue. [Bug 1677512]
 
-	* win/tclWinReg.c: Changed the Tcl_PkgProvide() line to declare the
-	registry extension at version 1.1 from 1.0.
+2007-03-19  Don Porter	<dgp@users.sourceforge.net>
 
-2002-10-31  Andreas Kupries  <andreask@activestate.com>
+	* generic/tclCompile.c: Revise the various expansion routines for
+	CompileEnv fields to use ckrealloc() where appropriate.
 
-	* library/word.tcl: Changed $tcl_platform to $::tcl_platform to avoid
-	possible scope trouble.
+	* generic/tclBinary.c (Tcl_SetByteArrayLength): Replaced ckalloc() /
+	memcpy() sequence with ckrealloc() call.
 
-2002-10-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclBasic.c (Tcl_CreateMathFunc):	Replaced some calls to
+	* generic/tclEvent.c (Tcl_CreateThread):	Tcl_Alloc() with calls
+	* generic/tclObj.c (UpdateStringOfBignum):	to ckalloc(), which
+	* unix/tclUnixTime.c (SetTZIfNecessary):	better supports memory
+	* win/tclAppInit.c (setargv):			debugging.
 
-	* win/tclWinInt.h:
-	* win/tclWin32Dll.c: added comments about certain NULL function
-	pointers which will be filled in when Tcl_FindExecutable is called, so
-	that users don't report invalid bugs on this topic. (No code changes
-	at all).
+2007-03-19  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-10-29  Daniel Steffen  <das@users.sourceforge.net>
+	* doc/regsub.n: Corrected example so that it doesn't recommend
+	potentially unsafe practice. Many thanks to Konstantin Kushnir
+	<chpock@gmail.com> for reporting this.
 
-	* unix/tclLoadDyld.c (TclpFindSymbol): pass all dyld error messages
-	upstream [Bug 627546].
+2007-03-17  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-10-28  Andreas Kupries  <andreask@activestate.com>
+	* win/tclWinReg.c (GetKeyNames): Size the buffer for enumerating key
+	names correctly, so that Unicode names exceeding 127 chars can be
+	retrieved without crashing. [Bug 1682211]
+	* tests/registry.test (registry-4.9): Added test case for the above
+	bug.
 
-	* library/dde/pkgIndex.tcl:
-	* library/reg/pkgIndex.tcl: Changed the hardwired debug suffix (d) to
-	the correct suffix (g).
+2007-03-15  Mo DeJong  <mdejong@users.sourceforge.net>
 
-2002-10-28  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclIOUtil.c (Tcl_Stat): Reimplement workaround to avoid gcc
+	warning by using local variables. When the macro argument is of type
+	long long instead of long, the incorrect warning is not generated.
 
-	* library/auto.tcl:	Converted the Mac-specific [package unknown]
-	* library/init.tcl:	behavior to use a chaining mechanism to extend
-	* library/package.tcl:	the default [tclPkgUnknown]. [Bug 627660]
-	* library/tclIndex:	[Patch 624509] (steffen)
+2007-03-15  Mo DeJong  <mdejong@users.sourceforge.net>
 
-2002-10-26  David Gravereaux <davygrvy@pobox.com>
+	* win/Makefile.in: Fully qualify LIBRARY_DIR so that `make test` does
+	not depend on working dir.
 
-	* win/makefile.vc: xcopy on NT 4.0 doesn't support the /Y switch
-	(overwrite). Added logic to handle this. [Bug 618019]
+2007-03-15  Mo DeJong  <mdejong@users.sourceforge.net>
 
-2002-10-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* tests/parse.test: Add two backslash newline parse tests.
 
-	* generic/tclInt.h: Removed definitions of obsolete HistoryEvent and
-	HistoryRev structures (the history mechanism has been written in Tcl
-	for some time now).
+2007-03-12  Don Porter	<dgp@users.sourceforge.net>
 
-2002-10-22  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c (INST_FOREACH_STEP4):	Make private copy of
+	* tests/foreach.test (foreach-10.1):	value list to be assigned to
+	variables so that shimmering of that list doesn't lead to invalid
+	pointers. [Bug 1671087]
 
-	*** 8.4.1 TAGGED FOR RELEASE ***
+	* generic/tclEvent.c (HandleBgErrors):	Make efficient private copy
+	* tests/event.test (event-5.3): of the command prefix for the interp's
+	background error handling command to avoid panics due to pointers to
+	memory invalid after shimmering. [Bug 1670155]
 
-	* changes: updated for 8.4.1 release
+	* generic/tclNamesp.c (NsEnsembleImplementationCmd):	Make efficient
+	* tests/namespace.test (namespace-42.8):	private copy of the
+	command prefix as we invoke the command appropriate to a particular
+	subcommand of a particular ensemble to avoid panic due to shimmering
+	of the List intrep. [Bug 1670091]
 
-	* win/Makefile.in: removed @MEM_DEBUG_FLAGS@ subst.
-	* win/configure: regen
-	* win/configure.in: removed SC_ENABLE_MEMDEBUG call
-	* win/tcl.m4: replaced SC_ENABLE_MEMDEBUG with a more intelligent
-	SC_ENABLE_SYMBOLS that takes yes|no|mem|compile|all as options now.
+	* generic/tclVar.c (TclArraySet):	Make efficient private copy of
+	* tests/var.test (var-17.1):	the "list" argument to [array set] to
+	avoid crash due to shimmering invalidating pointers. [Bug 1669489]
 
-2002-10-22  Daniel Steffen  <das@users.sourceforge.net>
+2007-03-12  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* library/auto.tcl (tcl_findLibrary):
-	* library/package.tcl (tclPkgUnknown): on macosx, search inside the
-	Resources/Scripts subdirectory of any potential package directory
-	* macosx/Tcl.pbproj/project.pbxproj: add standard Frameworks dirs to
-	TCL_PACKAGE_PATH make argument.
-	* unix/tclUnixInit.c (TclpSetVariables): on macosx, add embedded
-	framework dirs to tcl_pkgPath: @executable_path/../Frameworks and
-	@executable_path/../PrivateFrameworks (if they exist), as well as the
-	dirs in DYLD_FRAMEWORK_PATH (if set). [Patch 624509] use standard
-	MAXPATHLEN instead of literal 1024
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Fix problems with declaration
+	positioning and memory leaks. [Bug 1679072]
 
-2002-10-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-03-11  Donal K. Fellows  <dkf@users.sf.net>
 
-	* doc/StringObj.3, doc/Object.3: Documented that Tcl_Obj's
-	standard string form is a modified UTF-8; apparently, this was not
-	mentioned anywhere in the main docs, and lead to [Bug 624919].
+	* generic/tclCmdIL.c (Tcl_LreverseObjCmd): Ensure that a list is
+	correctly reversed even if its internal representation is shared
+	without the object itself being shared. [Bug 1675044]
 
-2002-10-21  Daniel Steffen  <das@users.sourceforge.net>
+2007-03-10  Miguel Sofer  <msofer@users.sf.net>
 
-	* macosx/Tcl.pbproj/project.pbxproj: bumped version to 8.4.1
-	* generic/tcl.h: Added reminder comment to edit
-	macosx/Tcl.pbproj/project.pbxproj when version number changes.
+	* generic/tclCmdIL (Tcl_LsortObjCmd): changed fix to [Bug 1675116] to
+	use the cheaper TclListObjCopy() instead of Tcl_DuplicateObj().
 
-2002-10-18  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-03-09  Andreas Kupries  <andreask@activestate.com>
 
-	* library/reg/pkgIndex.tcl:
-	* win/configure:
-	* win/configure.in:
-	* win/Makefile.in:
-	* win/makefile.vc:
-	* win/makefile.bc:    Updated to reg1.1
+	* library/platform/shell.tcl: Made more robust if an older platform
+	* library/platform/pkgIndex.tcl: package is present in the inspected
+	* unix/Makefile.in: shell. Package forget it to prevent errors. Bumped
+	* win/Makefile.in: package version to 1.1.3, and updated the Makefiles
+	installing it as Tcl Module.
 
-	* doc/registry.n:      Added support for broadcasting changes to the
-	* tests/registry.test: registry Environment. Noted proper code in ths
-	* win/tclWinReg.c:     docs. [Patch 625453]
+2007-03-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* unix/Makefile.in (dist): add any mac/tcl*.sea.hqx files
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Handle tricky case with loss
+	* tests/cmdIL.test (cmdIL-1.29):	of list rep during sorting due
+	to shimmering. [Bug 1675116]
 
-2002-10-17  Don Porter  <dgp@users.sourceforge.net>
+2007-03-09  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclVar.c:	Fixed code that check for proper # of args to
-	* tests/var.test:	[array names]. Added test. [Bug 624755]
+	* library/clock.tcl (ReadZoneinfoFile): Added Y2038 compliance to the
+	code for version-2 'zoneinfo' files.
+	* tests/clock.test (clock-56.3): Added a test case for Y2038 and
+	'zoneinfo'. Modified test initialisation to use the
+	'loadTestedCommands' function of tcltest to bring in the correct path
+	for the registry library.
 
-2002-10-16  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-03-08  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/configure:		 add workaround for cygwin windres
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): problem. [Patch 624010] (howell)
+	* generic/tclListObj.c (TclLsetList):	Rewrite so that the routine
+	itself does not do any direct intrep surgery. Better isolates those
+	things into the implementation of the "list" Tcl_ObjType.
 
-2002-10-15  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-03-08  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* README: added archives.tcl.tk note
+	* generic/tclListObj.c (TclLindexList, TclLindexFlat): Moved these
+	functions to tclListObj.c from tclCmdIL.c to mirror the way that the
+	equivalent functions for [lset]'s guts are arranged.
 
-	* unix/configure:
-	* unix/tcl.m4: Correct AIX-5 ppc build flags. Correct HP 11 64-bit gcc
-	building. [Patch 601051] (martin)
+2007-03-08  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-10-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* library/clock.tcl: Further tweaks to the Windows time zone table
+	(restoring missing Mexican time zones). Added rudimentary handling of
+	version-2 'zoneinfo' files. Update US DST rules so that zones such as
+	'EST5EDT' get the correct transition dates.
+	* tests/clock.test: Added rudimentary test cases for 'zoneinfo'
+	parsing. Adjusted several tests that depended on obsolete US DST
+	transition rules.
 
-	* generic/tclCmdMZ.c:
-	* tests/trace.test: applied patch from Hemang Levana to fix [Bug
-	615043] in execution traces with idle tasks firing.
+2007-03-07  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-10-14  Jeff Hobbs  <jeffh@ActiveState.com>
+	* macosx/tclMacOSXNotify.c: add spinlock debugging and sanity checks.
 
-	* generic/tclEnv.c (Tcl_PutEnv): correct possible mem leak.
-	[Patch 623269] (brouwers)
+	* macosx/Tcl.xcodeproj/project.pbxproj: ensure gcc version used by
+	* macosx/Tcl.xcodeproj/default.pbxuser: Xcode and configure/make are
+	* macosx/Tcl-Common.xcconfig:		consistent and independent of
+	gcc_select default and CC env var; fixes for Xcode 3.0.
 
-2002-10-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* unix/tcl.m4 (Darwin): s/CFLAGS/CPPFLAGS/ in macosx-version-min check
+	* unix/configure: autoconf-2.59
 
-	* generic/tcl.h: Need a different strategy through the maze of
-	#defines to let people building with Cygwin build correctly.  Also
-	made some comments less misleading...
+2007-03-07  Don Porter	<dgp@users.sourceforge.net>
 
-2002-10-10  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclCmdIL.c (TclLindex*):	Rewrites to make efficient
+	private copies of the list and indexlist arguments, so we can operate
+	on the list elements directly with no fear of shimmering effects.
+	Replaces defensive coding schemes that are otherwise required. End
+	result is that TclLindexList is entirely a wrapper around
+	TclLindexFlat, which is now the core engine of all [lindex]
+	operations.
 
-	* README: fixed minor nits [Bug 607776] (virden)
+	* generic/tclObj.c (Tcl_AppendAllObjTypes):	Converted to simpler
+	list validity test.
 
-	* win/configure:
-	* win/tcl.m4: enable USE_THREAD_ALLOC (new threaded allocator) by
-	default in cygwin configure on Windows.
+2007-03-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-2002-10-10  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclRegexp.c (TclRegAbout): Generate information about a
+	regexp as a Tcl_Obj instead of as a string, which is more efficient.
 
-	* doc/Tcl.n:	Clarified that namespace separators are legal in
-			the variable names during $-subtitution. [Bug 615139]
+2007-03-07  Kevin B. Kenny  <kennykb@acm.org>
 
-	* doc/regexp.n:	Typo correction.  Thanks Ronnie Brunner. [Bug 606826]
+	* library/clock.tcl: Adjusted Windows time zone table to handle new US
+	DST rules by locale rather than as Posix time zone spec.
+	* tests/clock.test (clock-39.6, clock-49.2, testclock::registry):
+	Adjusted tests to simulate new US rules.
+	* library/tzdata/America/Indiana/Winamac:
+	* library/tzdata/Europe/Istanbul:
+	* library/tzdata/Pacific/Easter:
+	Olson's tzdata2007c.
 
-2002-10-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+2007-03-05  Andreas Kupries  <andreask@activestate.com>
 
-	* unix/tclLoadAout.c
-	* unix/tclLoadDl.c
-	* unix/tclLoadDld.c
-	* unix/tclLoadDyld.c
-	* unix/tclLoadNext.c
-	* unix/tclLoadOSF.c
-	* unix/tclLoadShl.c
-	* win/tclWinLoad.c: allow either full paths or simply dll names to be
-	specified when loading files (the latter will be looked up by the OS
-	on your PATH/LD_LIBRARY_PATH as appropriate). Fixes [Bug 611108]
+	* library/platform/shell.tcl (::platform::shell::RUN): In the case of
+	* library/platform/pkgIndex.tcl: a failure put the captured stderr
+	* unix/Makefile.in: into the error message to aid in debugging. Bumped
+	* win/Makefile.in: package version to 1.1.2, and updated the makefiles
+	installing it as Tcl Module.
 
-2002-10-09  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-03-03  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/README: doc'ed --enable-symbols options.
-	* unix/Makefile.in: removed @MEM_DEBUG_FLAGS@ subst.
-	* unix/configure: regen
-	* unix/configure.in: removed SC_ENABLE_MEMDEBUG call
-	* unix/tcl.m4: replaced SC_ENABLE_MEMDEBUG with a more intelligent
-	SC_ENABLE_SYMBOLS that takes yes|no|mem|compile|all as options now.
+	* generic/tclLink.c (LinkedVar): Added macro to conceal at least some
+	of the pointer hackery.
 
-2002-10-09  Kevin B. Kenny  <kennykb@acm.org>
+2007-03-02  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/tclWinTime.c: Added code to set an exit handler that terminates
-	the thread that calibrates the performance counter, so that the thread
-	won't outlive unloading the Tcl DLL. [Bug 620735].
+	* generic/tclCmdIL.c (Tcl_LreverseObjCmd):	Added missing
+	TclInvalidateStringRep() call when we directly manipulate the intrep
+	of an unshared "list" Tcl_Obj. [Bug 1672585]
 
-2002-10-09  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclCmdIL.c (Tcl_JoinObjCmd):	Revised [join] implementation
+	to append Tcl_Obj's instead of strings. [RFE 1669420]
 
-	* doc/binary.n: More clarification of [binary scan]'s behaviour.
+	* generic/tclCmdIL.c (Info*Cmd):	Code simplifications and
+	optimizations.
 
-2002-10-09  Daniel Steffen  <das@users.sourceforge.net>
+2007-03-02  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* generic/tclIntDecls.h: fixed botched regen.
+	* generic/tclCompile.c (TclPrintInstruction): Added a scheme to allow
+	* generic/tclCompile.h (AuxDataPrintProc):    aux-data to be printed
+	* generic/tclCompCmds.c (Print*Info):	      out for debugging. For
+	this to work, immediate operands referring to aux-data must be
+	identified as such in the instruction descriptor table using
+	OPERAND_AUX4 (all are always 4 bytes).
 
-2002-10-09  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclExecute.c (TclExecuteByteCode): Rewrote the compiled
+	* generic/tclCompCmds.c (TclCompileDictCmd): [dict update] so that it
+	* generic/tclCompile.h (DictUpdateInfo):     stores critical
+	* tests/dict.test (dict-21.{14,15}):	     non-varying data in an
+	aux-data value instead of a (shimmerable) literal. [Bug 1671001]
 
-	* generic/tclInt.decls: made TclSetPreInitScript() declaration
-	generic as it is used on mac & aqua as well.
-	* generic/tclIntDecls.h:
-	* generic/tclStubInit.c: regen.
-	* generic/tclCompile.h: added prototype for TclCompileVariableCmd.
+2007-03-01  Don Porter	<dgp@users.sourceforge.net>
 
-	* mac/tclMacPort.h: removed incorrect <fcntl.h> definitions and
-	obsolete <stat.h> definitions.
-	* mac/tclMacChan.c: removed obsolete GetOpenMode() and replaced
-	associated constants with the <fcntl.h> analogues (they existing defs
-	were inconsistent with <fcntl.h> which was causing havoc when
-	Tcl_GetOpenMode was used instead of private GetOpenMode).
+	* generic/tclCmdIL.c (Tcl_LinsertObjCmd):	Code simplifications
+	and optimizations.
 
-	* mac/tclMacFCmd.c: removed GenerateUniqueName(), use equivalent (and
-	identically named) routine from MoreFiles instead.
+	* generic/tclCmdIL.c (Tcl_LreplaceObjCmd):	Code simplifications
+	and optimizations.
 
-	* mac/tclMacLoad.c: CONSTification, fixes to Vince's last changes.
+	* generic/tclCmdIL.c (Tcl_LrangeObjCmd):	Rewrite in the same
+	spirit; avoid shimmer effects rather than react to them.
 
-	* mac/tclMacFile.c:
-	* mac/tclMacTest.c:
-	* mac/tclMacUnix.c: CONSTification.
+	* generic/tclCmdAH.c (Tcl_ForeachObjCmd):	Stop throwing away
+	* tests/foreach.test (foreach-1.14):	useful error information when
+	loop variable sets fail.
 
-	* mac/tclMacOSA.c: CONSTification, sprintf fixes, UH 3.4.x changes;
-	fix for missing autoname token from TclOSACompileCmd. (bdesgraupes)
-	* mac/AppleScript.html(AppleScript delete): doc fix. (bdesgraupes)
+	* generic/tclCmdIL.c (Tcl_LassignObjCmd):	Rewrite to make an
+	efficient private copy of the list argument, so we can operate on the
+	list elements directly with no fear of shimmering effects. Replaces
+	defensive coding schemes that are otherwise required.
 
-	* mac/tcltkMacBuildSupport.sea.hqx: updated MoreFiles to 1.5.3,
-	updated build instructions for 8.4.
-	* mac/tclMacProjects.sea.hqx: rebuilt archive.
+	* generic/tclCmdAH.c (Tcl_ForeachObjCmd):	Rewrite to make
+	efficient private copies of the variable and value lists, so we can
+	operate on them without any special shimmer defense coding schemes.
 
-2002-10-09  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-03-01  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* doc/Alloc.3: Added a note to mention that attempting to allocate a
-	zero-length block can return NULL. [Tk Bug 619544]
+	* generic/tclCompCmds.c (TclCompileForeachCmd): Prevent an unexpected
+	* tests/foreach.test (foreach-9.1):		infinite loop when the
+	variable list is empty and the foreach is compiled. [Bug 1671138]
 
-2002-10-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-02-26  Andreas Kupries  <andreask@activestate.com>
 
-	* doc/binary.n: Doc improvements [Patch 616480]
+	* generic/tclIORChan.c (FreeReflectedChannel): Added the missing
+	refcount release between NewRC and FreeRC for the channel handle
+	object, spotted by Don Porter. [Bug 1667990]
 
-	* tests/fCmd.test, tests/winFCmd.test:
-	* tools/eolFix.tcl, tools/genStubs.tcl: [file exist] -> [file exists]
-	Thanks to David Welton.
+2007-02-26  Don Porter	<dgp@users.sourceforge.net>
 
-2002-10-03  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclCmdAH.c (Tcl_ForeachObjCmd):	Removed surplus
+	copying of the objv array that used to be a workaround for [Bug
+	404865]. That bug is long fixed.
 
-	* doc/tcltest.n: fixed typo [Bug 618018].  Thanks to "JJM".
+2007-02-24  Don Porter	<dgp@users.sourceforge.net>
 
-2002-10-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclBasic.c:	Use new interface in Tcl_EvalObjEx so that the
+	recounting logic of the List internal rep need not be repeated there.
+	Better encapsulation of internal details.
 
-	* tools/man2help2.tcl:
-	* tests/http.test, tests/httpd, tests/httpold.test:
-	* tests/env.test, tests/binary.test, tests/autoMkindex.test:
-	* library/init.tcl, library/http/http.tcl: [info exist] should really
-	be [info exists]. [Bug 602566]
+	* generic/tclInt.h:	New internal routine TclListObjCopy() used
+	* generic/tclListObj.c: to efficiently do the equivalent of [lrange
+	$list 0 end]. After some experience with this, might be a good
+	candidate for exposure as a public interface. It's useful for callers
+	of Tcl_ListObjGetElements() who want to control the ongoing validity
+	of the returned objv pointer.
 
-	* doc/lsearch.n: Better specification of what happens when -sorted is
-	mixed with other options. [Bug 617816]
+2007-02-22  Andreas Kupries  <andreask@activestate.com>
 
-2002-10-01  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tests/pkg.test: Added tests for the case of an alpha package
+	satisfying a require for the regular package, demonstrating a corner
+	case specified in TIP#280. More notes in the comments to the test.
 
-	* generic/tclProc.c (TclCreateProc): mask out VAR_UNDEFINED for
-	precompiled locals to support 8.3 precompiled code.
-	(Tcl_ProcObjCmd): correct 2002-09-26 fix to look for tclProcBodyType.
+2007-02-20  Jan Nijtmans  <nijtmans@users.sf.net>
 
-2002-10-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclInt.decls: Added "const" specifiers in TclSockGetPort
+	* generic/tclIntDecls.h: regenerated
+	* generic/*.c:
+	* unix/tclUnixChan.c
+	* unix/tclUnixPipe.c
+	* win/tclWinPipe.c
+	* win/tclWinSock.c: Added many "const" specifiers in implementation.
 
-	* doc/socket.n: Mentioned that ports may be specified as serivce names
-	as well as integers. [Bug 616843]
+2007-02-20  Don Porter	<dgp@users.sourceforge.net>
 
-2002-09-30  Jeff Hobbs  <jeffh@ActiveState.com>
+	* doc/tcltest.n:	Typo fix. [Bug 1663539]
 
-	* generic/tclCompCmds.c (TclCompileRegexpCmd): correct the checking
-	for bad re's that didn't terminate the re string.  Resultant compiles
-	were correct, but much slower than necessary.
+2007-02-20  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-2002-09-29  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclFileName.c:  Handle extended paths on Windows NT and
+	* generic/tclPathObj.c:	  above. These have a \\?\ prefix. [Bug
+	* win/tclWinFile.c:	  1479814]
+	* tests/winFCmd.test:	  Tests for extended path handling.
 
-	* win/tclAppInit.c: Added proper exiting conditions using Win32
-	console signals. This handles the existing lack of a Ctrl+C exit to
-	call exit handlers when built for thread support. Also, properly
-	handles exits from other conditions such as CTRL_CLOSE_EVENT,
-	CTRL_LOGOFF_EVENT, and CTRL_SHUTDOWN_EVENT signals. In all cases, exit
-	handlers will be called. [Bug 219355]
+2007-02-19  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* win/makefile.vc: Added missing tclThreadAlloc.c to the build rules
-	and defines USE_THREAD_ALLOC when TCL_THREADS is defined to get the
-	new behavior by default.
+	* unix/tcl.m4: use SHLIB_SUFFIX=".so" on HP-UX ia64 arch.
+	* unix/configure: autoconf-2.59
 
-2002-09-27  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclIOUtil.c (Tcl_FSEvalFileEx): safe incr of objPtr ref.
 
-	* README:		Bumped to version 8.4.1 to avoid confusion
-	* generic/tcl.h:	of CVS snapshots with the actual 8.4.0
-	* tools/tcl.wse.in:	release.
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/configure.in:
+2007-02-18  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/configure:	autoconf
-	* win/configure:
+	* doc/chan.n, doc/clock.n, doc/eval.n, doc/exit.n, doc/expr.n:
+	* doc/interp.n, doc/open.n, doc/platform_shell.n, doc/pwd.n:
+	* doc/refchan.n, doc/regsub.n, doc/scan.n, doc/tclvars.n, doc/tm.n:
+	* doc/unload.n: Apply [Bug 1610310] to fix typos. Thanks to Larry
+	Virden for spotting them.
 
-2002-09-26  Jeff Hobbs  <jeffh@ActiveState.com>
+	* doc/interp.n: Partial fix of [Bug 1662436]; rest requires some
+	policy decisions on what should and shouldn't be safe commands from
+	the "new in 8.5" set.
 
-	* unix/configure: regen.
-	* unix/tcl.m4: improve AIX-4/5 64bit compilation support.
+2007-02-13  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclProc.c (Tcl_ProcObjCmd): correct overeager optimization
-	of noop proc to handle the precompiled case. (sofer)
+	* tools/fix_tommath_h.tcl: Further tweaking for the x86-64. The change
+	is to make 'mp_digit' be an 'unsigned int' on that platform; since
+	we're using only 32 bits of it, there's no reason to make it a 64-bit
+	'unsigned long.'
+	* generic/tclTomMath.h: Regenerated.
 
-	* unix/ldAix (nmopts): add -X32_64 to make it work for 32 or 64bit
-	mode compilation.
+2007-02-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* library/encoding/koi8-u.enc: removed extraneous spaces that confused
-	encoding reader. [Bug 615115]
+	* doc/re_syntax.n: Corrected description of 'print' class [Bug
+	1614687] and enhanced description of 'graph' class.
 
-	* unix/Makefile.in: generate source dists with -src designator and do
-	not generate .Z anymore (just .gz and .zip).
+2007-02-12  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-09-18  Mumit Khan <khan@nanotech.wisc.edu>
+	* tools/fix_tommath_h.tcl: Added code to patch out a check for
+	__x86_64__ that caused Tommath to use __attributes(TI)__ for the
+	mp_word type. Tetra-int's simply fail on too many gcc-glibc-OS
+	combinations to be ready for shipment today, even if they work for
+	some of us. This change allows reversion of das's change of 2006-08-18
+	that accomplised the same thing on Darwin. [Bugs 1601380, 1603737,
+	1609936, 1656265]
+	* generic/tclTomMath.h: Regenerated.
+	* library/tzdata/Africa/Asmara:
+	* library/tzdata/Africa/Asmera:
+	* library/tzdata/America/Nassau:
+	* library/tzdata/Atlantic/Faeroe:
+	* library/tzdata/Atlantic/Faroe:
+	* library/tzdata/Australia/Eucla:
+	* library/tzdata/Pacific/Easter: Rebuilt from Olson's tzdata2007b.
 
-	Added basic Cygwin support.
+2007-02-09  Joe Mistachkin  <joe@mistachkin.com>
 
-	* win/tcl.m4 (SC_PATH_TCLCONFIG): Support one-tree build.
-	(SC_PATH_TKCONFIG): Likewise.
-	(SC_PROG_TCLSH): Likewise.
-	(SC_CONFIG_CFLAGS): Assume real Cygwin port and remove -mno-cygwin
-	flags.	Add -mwin32 to extra_cflags and extra_ldflags. Remove ``-e
-	_WinMain@16'' from LDFLAGS_WINDOW.
-	* win/configure.in: Allow Cygwin build.
-	(SEH test): Define to be 1 instead of empty value.
-	(EXCEPTION_DISPOSITION): Add test.
-	* win/configure: Regenerate.
+	* win/nmakehlp.c: Properly cleanup after nmakehlp, including the
+	* win/makefile.vc: vcX0.pch file.
 
-	* generic/tcl.h: Don't explicitly define __WIN32__ for Cygwin, let the
-	user decide whether to use Windows or POSIX personality.
-	(TCL_WIDE_INT_TYPE, TCL_LL_MODIFIER, struct Tcl_StatBuf): Define for
-	Cygwin.
-	* generic/tclEnv.c (Tcl_CygwinPutenv): putenv replacement for Cygwin.
-	* generic/tclFileName.c (Tcl_TranslateFileName): Convert POSIX to
-	native format.
-	(TclDoGlob): Likewise.
-	* generic/tclPlatDecls.h (TCHAR): Define for Cygwin.
-	* win/tclWinPort.h (putenv, TclpSysAlloc, TclpSysFree)
-	(TclpSysRealloc): Define for Cygwin.
+2007-02-08  Jeff Hobbs	<jeffh@ActiveState.com>
 
-2002-09-26  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tclUnixInit.c (TclpCheckStackSpace): do stack size checks with
+	unsigned size_t to correctly validate stackSize in the 2^31+ range.
+	[Bug 1654104]
 
-	* macosx/Makefile: preserve environment value of INSTALL_ROOT. When
-	embedding only use deployment build. Force relink before embedded
-	build to ensure new linker flags are picked up.
+2007-02-08  Don Porter	<dgp@users.sourceforge.net>
 
-	* macosx/Tcl.pbproj/project.pbxproj: add symbolic links to debug lib,
-	stub libs and tclConfig.sh in framework toplevel. Configure target
-	dependency fix. Fix to 'clean' action. Added private tcl headers to
-	framework. Install tclsh symbolic link. Html doc build works when no
-	installed tclsh available. Made html doc structure in framework more
-	like in Apple frameworks.
+	* generic/tclNamesp.c:	Corrected broken logic in Tcl_DeleteNamespace
+	* tests/namespace.test: introduced in Patch 1577278 that caused
+	[namespace delete ::] to be effective only at level #0. New test
+	namespace-7.7 should prevent similar error in the future [Bug 1655305]
 
-2002-09-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2007-02-06  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tcl.m4 (SC_TCL_64BIT_FLAGS): Yet more robust 64-bit value
-	detection to close [Bug 613117] on more systems.
+	* generic/tclNamesp.c:	Corrected broken implementation of the
+	* tests/namespace.test: TclMatchIsTrivial optimization on [namespace
+	children $namespace $pattern].
 
-	* generic/tclCompile.c (TclPrintSource): More CONSTifying.
-	* generic/tclExecute.c (EvalStatsCmd): Object-ify to reduce warnings.
-	Thanks to 'CoderX2' on the chat for bringing this to my attention...
+2007-02-04  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/tcl.m4: Forgot to define TCL_WIDE_INT_IS_LONG at the
-	appropriate moment. I believe this is the cause of [Bug 613117]
+	* unix/tcl.m4: use gcc4's __attribute__((__visibility__("hidden"))) if
+	available to define MODULE_SCOPE effective on all platforms.
+	* unix/configure.in: add caching to -pipe and zoneinfo checks.
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* doc/lset.n: Changed 'list' to 'varName' for consistency with lappend
-	documentation. Thanks to Glenn Jackman [Bug 611719]
+2007-02-03  Joe Mistachkin  <joe@mistachkin.com>
 
-2002-09-22  Don Porter  <dgp@users.sourceforge.net>
+	* win/rules.vc: Fix platform specific file copy macros for downlevel
+	Windows.
 
-	* library/tcltest/tcltest.tcl:	Corrected [puts -nonewline] within
-	test bodies. Thanks to Harald Kirsch. [Bug 612786, Patch 612788] Also
-	corrected reporting of body return code. Thanks to David Taback [Bug
-	611922]
-	* library/tcltest/pkgIndex.tcl: Bump to version 2.2.1.
-	* tests/tcltest.test: added tests for these bugs.
+2007-01-29  Don Porter	<dgp@users.sourceforge.net>
 
-2002-09-15  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclResult.c: Added optimization case to TclTransferResult to
+	cover common case where there's big savings over the fully general
+	path. Thanks to Peter MacDonald. [Bug 1626518]
 
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Add PEEK_XCLOSEIM define under
-	Linux. This is used by Tk to double check that an X input context is
-	cleaned up before it is closed.
+	* generic/tclLink.c:	Broken linked float logic corrected. Thanks to
+	Andy Goth. [Bug 1602538]
 
-2002-09-12  David Gravereaux <davygrvy@pobox.com>
+	* doc/fcopy.n:	Typo fix. [Bug 1630627]
 
-	* win/coffbase.txt: Added BLT to the virtual base address listings
-	table should BLT's build tools decide to use it.
+2007-01-28  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-09-12  Daniel Steffen  <das@users.sourceforge.net>
+	* macosx/Tcl.xcodeproj/project.pbxproj:	  extract build settings that
+	* macosx/Tcl.xcodeproj/default.pbxuser:	  were common to multiple
+	* macosx/Tcl-Common.xcconfig (new file):  configurations into external
+	* macosx/Tcl-Debug.xcconfig (new file):	  xcconfig files; add extra
+	* macosx/Tcl-Release.xcconfig (new file): configurations for building
+	with SDKs and 64bit; convert legacy jam-based 'Tcl' target to native
+	target with single script phase; correct syntax of build setting
+	references to use $() throughout.
 
-	* generic/tcl.h:
-	* mac/tclMacApplication.r:
-	* mac/tclMacLibrary.r:
-	* mac/tclMacResource.r: unified use of the two equivalent resource
-	compiler header inclusion defines RC_INVOKED and RESOURCE_INCLUDED,
-	now use RC_INVOKED throughout.
+	* macosx/README: document new Tcl.xcodeproj configurations; other
+	minor updates/corrections.
 
-2002-09-10  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tcl.h: update location of version numbers in macosx files.
 
-	* unix/README: Add note about building extensions with the same
-	compiler Tcl was built with. [Tk Bug 592096]
+	* macosx/Tcl.xcode/project.pbxproj: restore 'tcltest' target to
+	* macosx/Tcl.xcode/default.pbxuser: working order by replicating
+	applicable changes to Tcl.xcodeproj since 2006-07-20.
 
-2002-09-10  Daniel Steffen  <das@users.sourceforge.net>
+2007-01-25  Daniel Steffen  <das@users.sourceforge.net>
 
-	* macosx/Tcl.pbproj/project.pbxproj: disabled building html
-	documentation during embedded build.
+	* unix/tcl.m4: integrate CPPFLAGS into CFLAGS as late as possible and
+	move (rather than duplicate) -isysroot flags from CFLAGS to CPPFLAGS
+	to avoid errors about multiple -isysroot flags from some older gcc
+	builds.
 
-2002-09-10  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/configure: autoconf-2.59
 
-	* unix/Makefile.in: added DYLIB_INSTALL_DIR variable for macosx and
-	set it to default value ${LIB_RUNTIME_DIR}
-	* unix/tcl.m4 (Darwin): use DYLIB_INSTALL_DIR instead of
-	LIB_RUNTIME_DIR in the -install_name argument to ld.
-	* unix/configure: regen.
+2007-01-22  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* macosx/Tcl.pbproj/project.pbxproj:
-	* macosx/Makefile: added support for building Tcl as an embedded
-	framework, i.e. using an dyld install_name containing
-	@executable_path/../Frameworks via the new DYLIB_INSTALL_DIR
-	unix/Makefile variable.
+	* compat/memcmp.c (memcmp): Reworked so that arithmetic is never
+	performed upon void pointers, since that is illegal. [Bug 1631017]
 
-2002-09-10  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-01-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	*** 8.4.0 TAGGED FOR RELEASE ***
+	* generic/tclCompile.c (TclCompileScript): Reduce the frequency with
+	which we issue INST_START_CMD, making bytecode both more compact and
+	somewhat faster. The optimized case is where we would otherwise be
+	issuing a sequence of those instructions; in those cases, it is only
+	ever the first one encountered that could possibly trigger.
 
-2002-09-06  Don Porter  <dgp@users.sourceforge.net>
+2007-01-19  Joe Mistachkin  <joe@mistachkin.com>
 
-	* doc/file.n:  Format correction, and clarified [file normalize]
-	returns an absolute path.
+	* tools/man2tcl.c: Include stdlib.h for exit() and improve comment
+	detection.
+	* win/nmakehlp.c: Update usage.
+	* win/makefile.vc: Properly build man2tcl.c for MSVC8.
 
-	* doc/tcltest.n:  Added examples section, as long promised.
+2007-01-19  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-09-06  Reinhard Max  <max@suse.de>
+	* macosx/tclMacOSXFCmd.c (TclMacOSXSetFileAttribute): on some versions
+	of Mac OS X, truncate() fails on resource forks, in that case use
+	open() with O_TRUNC instead.
 
-	* tests/tcltest.test: Added nonRoot flag to tests 8.3, 8.4, and 8.12.
+	* macosx/tclMacOSXNotify.c: accommodate changes to prototypes of
+	OSSpinLock(Un)Lock API.
 
-2002-09-05  Don Porter  <dgp@users.sourceforge.net>
+	* macosx/Tcl.xcodeproj/project.pbxproj: ensure HOME and USER env vars
+	* macosx/Tcl.xcodeproj/default.pbxuser: are defined when running
+						testsuite from Xcode.
 
-	* doc/tcltest.n:  Clarified phrasing.
+	* tests/env.test: add extra system env vars that need to be preserved
+	on some Mac OS X versions for testsuite to work.
 
-	* generic/tclBasic.c (TclRenameCommand,CallCommandTraces):
-	* tests/trace.test (trace-27.1): Corrected memory leak when a rename
-	trace deleted the command being traced. Test added. Thanks to Hemang
-	Lavana for the fix. [Bug 604609]
+	* unix/Makefile.in:  Move libtommath defines into configure.in to
+	* unix/configure.in: avoid replicating them across multiple
+	* macosx/Tcl.xcodeproj/project.pbxproj: buildsystems.
 
-	* generic/tclVar.c (TclDeleteVars):  Corrected logic for setting the
-	TCL_INTERP_DESTROYED flag when calling variable traces. [Tk Bug 605121]
+	* unix/tcl.m4: ensure CPPFLAGS env var is used when set. [Bug 1586861]
+	(Darwin): add -isysroot and -mmacosx-version-min flags to CPPFLAGS
+	when present in CFLAGS to avoid discrepancies between what headers
+	configure sees during preprocessing tests and compiling tests.
 
-2002-09-04  Miguel Sofer  <msofer@users.sourceforge.net>
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* generic/tclVar.c (DeleteArray): leak plug [Bug 604239]. Thanks to
-	dkf and dgp for the long and difficult discussion in the chat.
+2007-01-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-2002-09-03  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclCompile.c (TclCompileScript): Make sure that when parsing
+	an expanded literal fails, a correct bytecode sequence is still
+	issued. [Bug 1638414]. Also make sure that the start of the expansion
+	bytecode sequence falls inside the span of bytecodes for a command.
+	* tests/compile.test (compile-16.24): Added test for [Bug 1638414]
 
-	* generic/tclVar.c (Tcl_UpVar2): code cleanup to not use goto
+2007-01-17  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/configure: remove -pthread from LIBS on FreeBSD in thread
-	* unix/tcl.m4:	  enabled build. [Bug 602849]
+	* generic/tclIO.c: Added macros to make usage of ChannelBuffers
+	clearer.
 
-2002-09-03  Miguel Sofer  <msofer@users.sourceforge.net>
+2007-01-11  Joe English	 <jenglish@users.sourceforge.net>
 
-	* generic/tclInterp.c (AliasCreate): a Tcl_Obj was leaked on error
-	return from TclPreventAliasLoop.
+	* win/tcl.m4(CFLAGS_WARNING): Remove "-Wconversion". This was removed
+	from unix/tcl.m4 2004-07-16 but not from here.
+	* win/configure: Regenerated.
 
-2002-09-03  Daniel Steffen  <das@users.sourceforge.net>
+2007-01-11  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* macosx/Tcl.pbproj/project.pbxproj: Bumped version number to 8.4.0
-	and updated copyright info.
+	* win/makefile.vc: Fixes to work better on Win98. Read version numbers
+	* win/nmakehlp.c:  from package index file to avoid keeping numbers in
+	* win/rules.vc:	   the makefile where they may become de-synchronized.
 
-2002-09-03  Miguel Sofer  <msofer@users.sourceforge.net>
+2007-01-10  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* generic/tclVar.c (Tcl_UpVar2): a Tcl_Obj was being leaked on error
-	return from TclGetFrame.
+	* generic/regcomp.c (compile, freev):	     Define a strategy for
+	* generic/regexec.c (exec):		     managing the internal
+	* generic/regguts.h (AllocVars, FreeVars):   vars of the RE engine to
+	* generic/regcustom.h (AllocVars, FreeVars): reduce C stack usage.
+	This will make Tcl as a whole much less likely to run out of stack
+	space...
 
-2002-09-03  Don Porter  <dgp@users.sourceforge.net>
+2007-01-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* changes:  Updated changes for 8.4.0 release.
+	* generic/tclCompCmds.c (TclCompileLindexCmd):
+	* tests/lindex.test (lindex-9.2): Fix silly bug that ended up
+	sometimes compiling list arguments in the wrong order. [Bug 1631364]
 
-2002-09-02  Jeff Hobbs  <jeffh@ActiveState.com>
+2007-01-03  Kevin B. Kenny  <kennykb@acm.org>
 
-	* unix/tclUnixFile.c (TclpObjLink): removed unnecessary/unfreed
-	extra native char*.
+	* generic/tclDate.c: Regenerated to recover a lost fix from patthoyts.
+	[Bug 1618523]
 
-	* unix/tclUnixChan.c (Tcl_MakeTcpClientChannel): make sure to init
-	flags field of TcpState ptr to 0.
+2006-12-26  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* unix/configure:
-	* unix/tcl.m4: added 64-bit gcc compilation support on HP-11.
-	[Patch 601051] (martin)
+	* generic/tclIO.c (Tcl_GetsObj): Avoid checking for for the LF in a
+	possible CRLF sequence when EOF has already been found.
 
-	* README:		Bumped version number to 8.4.0
-	* generic/tcl.h:
-	* tools/tcl.wse.in:
-	* unix/configure:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure:
-	* win/configure.in:
+2006-12-26  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* generic/tclInterp.c (SlaveCreate): make sure that the memory and
-	checkmem commands are initialized in non-safe slave interpreters when
-	TCL_MEM_DEBUG is used. [Bug 583445]
+	* generic/tclEncoding.c (EscapeFromUtfProc): Clear the
+	TCL_ENCODING_END flag when end bytes are written. This fix keep this
+	method from writing escape bytes for an encoding like iso2022-jp
+	multiple times when the escape byte overlap with the end of the IO
+	buffer.
+	* tests/io.test: Add test for escape byte overlap issue.
 
-	* win/tclWinConsole.c (ConsoleCloseProc): only wait on writable pipe
-	if there was something to write. This may prevent infinite wait on
-	exit.
+2006-12-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* tests/exec.test: marked exec-18.1 unixOnly until the Windows
-	incompatability (in the test, not the core) can be resolved.
+	* unix/tclUnixThrd.c (Tcl_GetAllocMutex, TclpNewAllocMutex): Add
+	intermediate variables to shut up unwanted warnings. [Bug 1618838]
 
-	* tests/http.test (http-3.11): added close $fp that was causing an
-	error on Windows because the file was not closed before deleting.
+2006-12-19  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/tclUnixInit.c (Tcl_MacOSXGetLibraryPath): made this static
-	function only appear when HAVE_CFBUNDLE is defined.
+	* unix/tclUnixThrd.c (TclpInetNtoa): fix for 64 bit.
 
-2002-08-31  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tcl.m4 (Darwin): --enable-64bit: verify linking with 64bit
+	-arch flag succeeds before enabling 64bit build.
+	* unix/configure: autoconf-2.59
 
-	* unix/tcl.m4: added TK_SHLIB_LD_EXTRAS analogue of existing
-	TCL_SHLIB_LD_EXTRAS for linker settings only used when linking Tk.
+2006-12-17  Daniel Steffen  <das@users.sourceforge.net>
+
+	* tests/macOSXLoad.test (new file): add testing of .bundle loading and
+	* tests/load.test:		    unloading on Darwin (in addition
+	* tests/unload.test:		    to existing tests of .dylib
+	loading).
+	* macosx/Tcl.xcodeproj/project.pbxproj: add building of dltest
+	binaries so that testsuite run from Xcode can use them; fix testsuite
+	run script
+	* unix/configure.in:	   add support for building dltest binaries as
+	* unix/dltest/Makefile.in: .bundle (in addition to .dylib) on Darwin.
+	* unix/Makefile.in: add stub lib dependency to dltest target.
+	* unix/configure: autoconf-2.59
 
-	* unix/configure: regen
+	* tests/append.test: fix cleanup failure when all tests are skipped.
 
-2002-08-31  Daniel Steffen  <das@users.sourceforge.net>
+	* tests/chan.test (chan-16.9): cleanup chan event handler to avoid
+	causing error in event.test when running testsuite with -singleproc 1.
 
-	*** macosx-8-4-branch merged into the mainline [Patch 602770] ***
+	* tests/info.test: add !singleTestInterp constraint to tests that fail
+	when running testsuite with -singleproc 1. [Bug 1605269]
 
-	* generic/tcl.decls: added new macosx specific entry to stubs table.
+2006-12-14  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* tools/genStubs.tcl: added generation of platform guards for macosx.
-	This is a little more complex than it seems, because MacOS X IS "unix"
-	plus a little bit, for the purposes of Tcl. BUT unfortunately, Tk uses
-	"unix" to mean X11. So added platform keys for macosx (the little
-	added to "unix"), "aqua" and "x11" to distinguish these for Tk.
+	* doc/string.n: Fix example. [Bug 1615277]
 
-	* generic/tcl.h: added a #ifnded RESOURCE_INCLUDED so that tcl.h can
-	be passed to the resource compiler.
+2006-12-12  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tcl.h:
-	* generic/tclNotify.c: added a few Notifier procs, to be able to
-	modify more bits of the Tcl notifier dynamically. Required to get Mac
-	OS X Tk to live on top of the Tcl Unix threaded notifier.  Changes the
-	size of the Tcl_NotifierProcs structure, but doesn't move any elements
-	around.
+	* generic/tclCompExpr.c:	Now that the new internal structs are
+	in use to support operator commands, might as well make them the
+	default for [expr] as well and avoid passing every parsed expression
+	through the inefficient Tcl_Token array format. This addresses most
+	issues in [RFE 1517602]. Assuming no performance disasters result from
+	this, much dead code supporting the other implementation might now be
+	removed.
 
-	* unix/tclUnixNotfy.c: moved the call to Tcl_ConditionNotify till
-	AFTER we are done mucking with the pointer swap. Fixes cases where the
-	thread waiting on the condition wakes & accesses the waitingListPtr
-	before it gets reset, causing a hang.
+	* generic/tclBasic.c:	Final step routing all direct evaluation forms
+	* generic/tclCompExpr.c: of the operator commands through TEBC,
+	* generic/tclCompile.h: dropping all the routines in tclMathOp.c.
+	* generic/tclMathOp.c:	Still needs Engineering Manual attention.
 
-	* library/auto.tcl (tcl_findLibrary): added checking the directories
-	in the tcl_pkgPath for library files on macosx to enable support of
-	the standard Mac OSX library locations
+2006-12-11  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/Makefile.in:
-	* unix/configure.in:
-	* unix/tcl.m4: added MAC_OSX_DIR. Added PLAT_OBJS to the OBJS: there
-	are some MacOS X specific files now for Tcl, and when I get he
-	resource & applescript stuff ported over, and restore support for
-	FindFiles, etc, there will be a few more. Added LD_LIBRARY_PATH_VAR
-	configure variable to avoid having to set all possible LD_LIBRARY_PATH
-	analogues on all platforms. LD_LIBRARY_PATH_VAR is "LD_LIBRARY_PATH"
-	by default, "LIBPATH" on AIX, "SHLIB_PATH" on HPUX and
-	"DYLD_LIBRARY_PATH" on Mac OSX. Added configure option to package Tcl
-	as a framework on Mac OSX.
+	* generic/tclBasic.c:	Another step with all sorting operator
+	* generic/tclCompExpr.c: commands now routing through TEBC via
+	* generic/tclCompile.h: TclSortingOpCmd().
 
-	* macosx/tclMacOSXBundle.c (new): support for finding Tcl extension
-	packaged as 'bundles' in the standard Mac OSX library locations.
+2006-12-08  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tclUnixInit.c: added support for findig the tcl script library
-	inside Tcl packaged as a framework on Mac OSX.
+	* generic/tclBasic.c:	 Another step down the path of re-using
+	* generic/tclCompExpr.c: TclExecuteByteCode to implement the TIP 174
+	* generic/tclCompile.h: commands instead of using a mass of code
+	* generic/tclMathOp.c:	duplication. Now all operator commands that
+	* tests/mathop.test:	demand exactly one operation are implemented
+	via TclSingleOpCmd and a call to TEBC.
 
-	* macosx/Tcl.pbproj/jingham.pbxuser (new):
-	* macosx/Tcl.pbproj/project.pbxproj (new): project for Apple's
-	ProjectBuilder IDE.
+	* generic/tclCompExpr.c: Revised implementation of TclInvertOpCmd to
+	* generic/tclMathOp.c:	perform a bytecode compile / execute sequence.
+	This demonstrates a path toward avoiding mountains of code duplication
+	in tclMathOp.c and tclExecute.c.
 
-	* macosx/Makefile (new): simple makefile for building the project from
-	the command line via the ProjectBuilder tool 'pbxbuild'.
+	* generic/tclCompile.h: Change TclExecuteByteCode() from static to
+	* generic/tclExecute.c: MODULE_SCOPE so all files including
+	tclCompile.h may call it.
 
-	* unix/configure:
-	* generic/tclStubInit.c:
-	* generic/tclPlatDecls.h: regen
+	* generic/tclMathOp.c:	More revisions to make tests pass.
+	* tests/mathop.test:
 
-2002-08-29  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+2006-12-08  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* win/tclWinThrd.c (TclpFinalizeThreadData, TclWinFreeAllocCache):
-	Applied patch for [Bug 599428] (sofer)
+	* generic/tclNamesp.c (TclTeardownNamespace): Ensure that dying
+	namespaces unstitch themselves from their referents. [Bug 1571056]
+	(NsEnsembleImplementationCmd): Silence GCC warning.
 
-2002-08-28  David Gravereaux <davygrvy@pobox.com>
+	* tests/mathop.test: Full tests for & | and ^ operators
 
-	* generic/tclEnv.c:
-	* unix/configure.in:
-	* win/tclWinPort.h:  putenv() on some systems copies the buffer rather
-	than taking reference to it. This causes memory leaks and is know to
-	effect mswindows (msvcrt) and NetBSD 1.5.2. This patch tests for this
-	behavior and turns on -DHAVE_PUTENV_THAT_COPIES=1 when approriate.
-	Thanks to David Welton for assistance. [Bug 414910]
+2006-12-08  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/configure: regen'd
+	* library/tcltest/tcltest.tcl: use [info frame] for "-verbose line".
 
-2002-08-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-12-07  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/eval.n: Added mention of list command and corrected "SEE ALSO".
+	* generic/tclCompCmds.c:	Additional commits correct most
+	* generic/tclExecute.c:		failing tests illustrating bugs
+	* generic/tclMathOp.c:		uncovered in [Patch 1578137].
 
-	* unix/configure.in: Cache handling of ac_cv_type_socklen_t was wrong.
-	[Bug 600931] reported by John Ellson. Fixed by putting the brackets
-	where they belong.
+	* generic/tclBasic.c:	Biggest source of TIP 174 failures was that
+	the commands were not [namespace export]ed from the ::tcl::mathop
+	namespace. More bits from [Patch 1578137] correct that.
 
-2002-08-26  Miguel Sofer  <msofer@users.sourceforge.net>
+	* tests/mathop.test:	Commmitted several new tests from Peter Spjuth
+	found in [Patch 1578137]. Many failures now demonstrate issues to fix
+	in the TIP 174 implementation.
 
-	* generic/tclCompCmds.c: fix for [Bug 599788] (error in element name
-	causing segfault), reported by Tom Wilkason. Fixed by copying the
-	tokens instead of the source string.
+2006-12-07  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-08-26  Miguel Sofer  <msofer@users.sourceforge.net>
+	* tests/mathop.test: Added tests for ! ~ eq operators.
+	* generic/tclMathOp.c (TclInvertOpCmd): Add in check for non-integral
+	numeric values.
+	* generic/tclCompCmds.c (CompileCompareOpCmd): Factor out the code
+	generation for the chained comparison operators.
 
-	* generic/tclThreadAlloc.c: small optimisation, reducing the new
-	allocator's overhead.
+2006-12-07  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-2002-08-23  Miguel Sofer  <msofer@users.sourceforge.net>
+	* tests/exec.test: Fixed line endings (caused win32 problems).
 
-	* generic/tclObj.c (USE_THREAD_ALLOC): fixed leak [Bug 597936]. Thanks
-	to Zoran Vasiljevic.
+2006-12-06  Don Porter	<dgp@users.sourceforge.net>
 
-2002-08-23  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclCompCmds.c:	Revised and consolidated into utility
+	* tests/mathop.test:		routines some of routines that compile
+	the new TIP 174 commands. This corrects some known bugs. More to come.
 
-	* generic/tclThreadAlloc.c (USE_THREAD_ALLOC): moving objects between
-	caches as a block, instead of one-by-one.
+2006-12-06  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-08-22  Miguel Sofer  <msofer@users.sourceforge.net>
+	* tests/expr.test (expr-47.12): Improved error reporting in hopes of
+	having more information to pursue [Bug 1609936].
 
-	* generic/tclBasic.c:
-	* generic/tclCmdMZ.c: fix for freed memory r/w in delete traces [Bug
-	589863], patch by Hemang Lavana.
+2006-12-05  Andreas Kupries  <andreask@activestate.com>
 
-2002-08-20  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	TIP#291 IMPLEMENTATION
 
-	* win/Makefile.in (CFLAGS):
-	* unix/Makefile.in (MEM_DEBUG_FLAGS): Added usage of @MEM_DEBUG_FLAGS@.
-	* win/configure.in:
-	* unix/configure.in: Added usage of SC_ENABLE_MEMDEBUG.
-	* win/tcl.m4:
-	* unix/tcl.m4: Added macro SC_ENABLE_MEMDEBUG. Allows a user of
-	configure to (de)activate memory validation and debugging
-	(TCL_MEM_DEBUG). No need to modify the makefile anymore.
+	* generic/tclBasic.c: Define tcl_platform element for pointerSize.
+	* doc/tclvars.n:
 
-2002-08-20  Don Porter  <dgp@users.sourceforge.net>
+	* win/Makefile.in: Added installation instructions for the platform
+	* win/makefile.vc: package. Added the platform package.
+	* win/makefile.bc:
+	* unix/Makefile.in:
 
-	* generic/tclCkalloc.c:	CONSTified MemoryCmd and CheckmemCmd.
+	* tests/platform.test:
+	* tests/safe.test:
 
-	* README:		Bumped version number to 8.4b3 to distinguish
-	* generic/tcl.h:	HEAD from the 8.4b2 release.
-	* tools/tcl.wse.in:
-	* unix/configure.in:
-	* unix/tcl.spec:
-	* win/README.binary:
-	* win/configure.in:
+	* library/platform/platform.tcl:
+	* library/platform/shell.tcl:
+	* library/platform/pkgIndex.tcl:
 
-	* unix/configure:	autoconf
-	* win/configure:
+	* doc/platform.n:
+	* doc/platform_shell.n:
 
-	* library/http/http.tcl:	Corrected installation directory of
-	* library/msgcat/msgcat.tcl:	the package tcltest 2.2.  Added
-	* library/opt/optparse.tcl:	comments in other packages to remind
-	* library/tcltest/tcltest.tcl:	that installation directories need
-	* unix/Makefile.in:		updates to match increasing version
-	* win/Makefile.in:		numbers. [Bug 597450]
-	* win/makefile.bc:
-	* win/makefile.vc:
+2006-12-05  Don Porter	<dgp@users.sourceforge.net>
 
-2002-08-19  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* generic/tclPkg.c:	When no requirements are supplied to a
+	* tests/pkg.test:	[package require $pkg] and [package unknown]
+	is invoked to find a satisfying package, pass the requirement argument
+	"0-" (which means all versions are acceptable). This permits a
+	registered [package unknown] command to call [package vsatisfies
+	$testVersion {*}$args] without any special handling of the empty $args
+	case. This fixes/avoids a bug in [::tcl::tm::UnknownHandler] that was
+	causing old TM versions to be provided in preference to newer TM
+	versions. Thanks to Julian Noble for discovering the issue.
 
-	* unix/tclUnixTest.c (TestfilehandlerCmd): Changed
-	readable/writable to the more common readable|writable.
-	Fixes [Bug 596034] (lvirden)
+2006-12-04  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-08-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	TIP#267 IMPLEMENTATION
 
-	* tests/fCmd.test: Added test to make sure that the cause of the
-	problem is detectable with an unpatched Tcl.
-	* doc/ObjectType.3: Added note on the root cause of this problem to
-	the documentation, since it is possible for user code to trigger this
-	sort of behaviour too.
-	* generic/tclIOUtil.c (SetFsPathFromAny): Objects should only have
-	their old representation deleted when we know that we are about to
-	install a new one.  This stops a weird TclX bug under Linux with
-	certain kinds of memory debugging enabled which essentally came down
-	to a double-free of a string.
+	* generic/tclIOCmd.c (Tcl_ExecObjCmd): Added -ignorestderr option,
+	* tests/exec.test, doc/exec.n:	       loosely from [Patch 1476191]
 
-2002-08-14  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-12-04  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclInt.h:
-	* generic/tclObj.c: (code cleanup) factored the parts in the macros
-	TclNewObj() / TclDecrRefCount() into a common part for all memory
-	allocators and two new macros TclAllocObjStorage() /
-	TclFreeObjStorage() that are specific to each allocator and fully
-	describe the differences. Removed allocator-specific code from
-	tclObj.c by using the macros.
+	* generic/tclCompExpr.c:	Added implementation for the
+	CompileExprTree() routine that can produce expression bytecode
+	directly from internal structures with no need to pass through the
+	Tcl_Token array representation. Still disabled by default. #undef
+	USE_EXPR_TOKENS to try it out.
 
-2002-08-12  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-12-03  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCmdMZ.c: fixing UMR in delete traces, [Bug 589863].
+	* generic/tclCompExpr.c:	Added expr parsing routines that
+	produce a different set of internal structures representing the parsed
+	expression, as well as routines that go on to convert those structures
+	into the traditional Tcl_Token array format. Use of these routines is
+	currently disabled. #undef PARSE_DIRECT_EXPR_TOKENS to enable them.
+	These routines will only become really useful when more routines that
+	compile directly from the new internal structures are completed.
 
-2002-08-08  David Gravereaux <davygrvy@pobox.com>
+2006-12-02  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tools/man2help.tcl: Fixed $argv handling bug where if -bitmap wasn't
-	specified $argc was off by one.
+	* doc/file.n: Clarification of [file pathtype] docs. [Bug 1606454]
 
-2002-08-08  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-12-01  Kevin B. Kenny	 <kennykb@acm.org>
 
-	* tests/uplevel.test: added 6.1 to test [uplevel] with shadowed
-	commands [Bug 524383]
+	* libtommath/bn_mp_add.c:	Corrected the effects of a
+	* libtommath/bn_mp_div.c:	bollixed 'cvs merge' operation
+	* libtommath/bncore.c:		that inadvertently committed some
+	* libtommath/tommath_class.h:	half-developed code.
 
-	* tests/subst.test: added 5.8-10 as further tests for [Bug 495207]
+	TIP#299 IMPLEMENTATION
 
-2002-08-08  Don Porter  <dgp@users.sourceforge.net>
+	* doc/mathfunc.n:	Added isqrt() function to docs
+	* generic/tclBasic.c:	Added isqrt() math function (ExprIsqrtFunc)
+	* tests/expr.test (expr-47.*): Added tests for isqrt()
+	* tests/info.test (info-20.2): Added isqrt() to expected math funcs.
 
-	* tests/README: Noted removal of defs.tcl.
+2006-12-01  Don Porter	<dgp@users.sourceforge.net>
 
-2002-08-08  Jeff Hobbs  <jeffh@ActiveState.com>
+	* tests/chan.test:	Correct timing sensitivity in new test. [Bug
+	1606860]
 
-	* doc/lsearch.n: corrected lsearch docs to use -inline in examples.
+	TIP#287 IMPLEMENTATION
 
-	*** 8.4b2 TAGGED FOR RELEASE ***
+	* doc/chan.n:		New subcommand [chan pending].
+	* generic/tclBasic.c:	Thanks to Michael Cleverly for proposal
+	* generic/tclInt.h:	and implementation.
+	* generic/tclIOCmd.c:
+	* library/init.tcl:
+	* tests/chan.test:
+	* tests/ioCmd.test:
 
-	* tests/fCmd.test:
-	* tests/unixFCmd.test: updated tests for new link copy behavior.
-	* generic/tclFCmd.c (CopyRenameOneFile): changed the behavior to
-	follow links to endpoints and copy that file/directory instead of just
-	copying the surface link. This means that trying to copy a link that
-	has no endpoint (danling link) is an error. [Patch 591647] (darley)
-	(CopyRenameOneFile): this is currently disabled by default until
-	further issues with such behavior (like relative links) can be handled
-	correctly.
+	TIP#298 IMPLEMENTATION
 
-	* tests/README: slight wording improvements
+	* generic/tcl.decls: Tcl_GetBignumAndClearObj -> Tcl_TakeBignumFromObj
+	* generic/tclObj.c:
 
-2002-08-07  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclDecls.h:	make genstubs
+	* generic/tclStubInit.c:
 
-	* docs/BoolObj.3: added description of valid string reps for a boolean
-	object [Bug 584794]
-	* generic/tclObj.c: optimised Tcl_GetBooleanFromObj and
-	SetBooleanFromAny to avoid parsing the string rep when it can be
-	avoided [Bugs 584650, 472576]
+	* generic/tclExecute.c: Update callers.
+	* generic/tclMathOp.c:
 
-2002-08-07  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-30  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclCompile.h:
-	* generic/tclObj.c: making tclCmdNameType static [Bug 584567] (dgp)
+	* library/tzdata: Olson's tzdata2006p.
+	* libtommath/bn_mp_sqrt.c: Fixed a bug where the initial approximation
+	to the square root could be on the wrong side, causing failure of
+	convergence.
 
-2002-08-07  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-29  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclObj.c (Tcl_NewObj): added conditional code for
-	USE_THREAD_ALLOC; objects allocated through Tcl_NewObj() were
-	otherwise being leaked. [Bug 587488] reported by Sven Sass.
+	* generic/tclBasic.c (Tcl_AppendObjToErrorInfo):  Added
+	Tcl_DecrRefCount() on the objPtr argument to plug memory leaks. This
+	makes the routine a consumer, which makes it easiest to use.
 
-2002-08-06  Daniel Steffen  <das@users.sourceforge.net>
+2006-11-28  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tclInt.decls:
-	* unix/tclUnixThrd.c: Added stubs and implementations for non-threaded
-	build for the tclUnixThrd.c procs TclpReaddir, TclpLocaltime,
-	TclpGmtime and TclpInetNtoa. Fixes link errors in stubbed & threaded
-	extensions that include tclUnixPort.h and use any of the procs
-	readdir, localtime, gmtime or inet_ntoa (e.g. TclX 8.4) [Bug 589526]
-	* generic/tclIntPlatDecls.h:
-	* generic/tclStubInit.c: Regen.
-
-2002-08-05  Don Porter  <dgp@users.sourceforge.net>
-
-	* library/tcltest/tcltest.tcl:	The setup and cleanup scripts are now
-	* library/tcltest/pkgIndex.tcl:	skipped when a test is skipped, fixing
-	* tests/tcltest.test:		[Bug 589859]. Test for bug added, and
-	corrected tcltest package bumped to version 2.2.
-
-	* generic/tcl.decls:	Restored Tcl_Concat to return (char *). Like
-	* generic/tclDecls.h:	Tcl_Merge, it transfers ownership of a dynamic
-	* generic/tclUtil.c:	allocated string to the caller.
-
-2002-08-04  Don Porter  <dgp@users.sourceforge.net>
-
-	* doc/CmdCmplt.3:	Applied Patch 585105 to fully CONST-ify
-	* doc/Concat.3:		all remaining public interfaces of Tcl.
-	* doc/CrtCommand.3:	Notably, the parser no longer writes on
-	* doc/CrtSlave.3:	the string it is parsing, so it is no
-	* doc/CrtTrace.3:	longer necessary for Tcl_Eval() to be
-	* doc/Eval.3:		given a writable string.  Also, the
-	* doc/ExprLong.3:	refactoring of the Tcl_*Var* routines
-	* doc/LinkVar.3:	by Miguel Sofer is included, so that the
-	* doc/ParseCmd.3:	"part1" argument for them no longer needs
-	* doc/SetVar.3:		to be writable either.
-	* doc/TraceVar.3:
-	* doc/UpVar.3:		Compatibility support has been enhanced so
-	* generic/tcl.decls:	that a #define of USE_NON_CONST will remove
-	* generic/tcl.h:	all possible source incompatibilities with
-	* generic/tclBasic.c:	the 8.3 version of the header file(s).
-	* generic/tclCmdMZ.c:	The new #define of USE_COMPAT_CONST now does
-	* generic/tclCompCmds.c:what USE_NON_CONST used to do -- disable
-	* generic/tclCompExpr.c:only those new CONST's that introduce
-	* generic/tclCompile.c:	irreconcilable incompatibilities.
+	* generic/tclBasic.c: TIP #280 implementation.
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclCompCmds.c:
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
 	* generic/tclCompile.h:
-	* generic/tclDecls.h:	Several bugs are also fixed by this patch.
-	* generic/tclEnv.c:	[Bugs 584051,580433] [Patches 585105,582429]
-	* generic/tclEvent.c:
-	* generic/tclInt.decls:
+	* generic/tclExecute.c:
+	* generic/tclIOUtil.c:
 	* generic/tclInt.h:
-	* generic/tclIntDecls.h:
 	* generic/tclInterp.c:
-	* generic/tclLink.c:
+	* generic/tclNamesp.c:
 	* generic/tclObj.c:
-	* generic/tclParse.c:
-	* generic/tclParseExpr.c:
 	* generic/tclProc.c:
-	* generic/tclTest.c:
-	* generic/tclUtf.c:
-	* generic/tclUtil.c:
-	* generic/tclVar.c:
-	* mac/tclMacTest.c:
-	* tests/expr-old.test:
-	* tests/parseExpr.test:
-	* unix/tclUnixTest.c:
-	* unix/tclXtTest.c:
-	* win/tclWinTest.c:
-
-2002-08-01  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclExecute.c: bugfix (reading freed memory). Testsuite
-	passed on linux/i386, compile-13.1 hung on linux/alpha.
-
-2002-08-01  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclExecute.c: added a reference count for the complete
-	execution stack, instead of Tcl_Preserve/Tcl_Release.
+	* tests/compile.test:
+	* tests/info.test:
+	* tests/platform.test:
+	* tests/safe.test:
 
-2002-08-01  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-11-27  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclCkalloc.c (TclFinalizeMemorySubsystem): Don't lock the
-	ckalloc mutex before invoking the Tcl_DumpActiveMemory function since
-	it also locks the same mutex. This code is only executed when "memory
-	onexit filename" has been executed and Tcl is compiled with
-	-DTCL_MEM_DEBUG.
+	* unix/tclUnixChan.c (TclUnixWaitForFile):
+	* tests/event.test (event-14.*): Corrected a bug where
+	TclUnixWaitForFile would present select() with the wrong mask on an
+	LP64 machine if a fd number exceeds 32. Thanks to Jean-Luc Fontaine
+	for reporting and diagnosing [Bug 1602208].
 
-2002-08-01  Reinhard Max  <max@suse.de>
+2006-11-27  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/tclWinPort.h: The windows headers don't provide socklen_t, so we
-	have to do it.
+	* generic/tclExecute.c (TclIncrObj):	Correct failure to detect
+	floating-point increment values. Thanks to William Coleda [Bug
+	1602991]
 
-2002-07-31  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-26  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclInt.h (USE_THREAD_ALLOC): for unshared objects,
-	TclDecrRefCount now frees the internal rep before the string rep -
-	just like the non-macro Tcl_DecrRefCount/TclFreeObj [Bug 524802]. For
-	the other allocators the fix was done on 2002-03-06.
+	* tests/mathop.test, doc/mathop.n: More bits and pieces of the TIP#174
+	implementation. Note that the test suite is not yet complete.
 
-2002-07-31  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-26  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclInterp.c: signed/unsigned comparison warning fixed
-	(Vince Darley).
+	* unix/tcl.m4 (Linux): --enable-64bit support.	[Patch 1597389]
+	* unix/configure: autoconf-2.59			[Bug 1230558]
 
-2002-07-31  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-11-25  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/tcl.m4 (SC_BUGGY_STRTOD): Enabled caching of test results.
+	TIP#174 IMPLEMENTATION
 
-	* unix/tcl.m4 (SC_BUGGY_STRTOD): Solaris 2.8 still has a buggy
-	strtod() implementation; make sure we detect it.
+	* generic/tclMathOp.c (new file): Completed the implementation of the
+	interpreted versions of all the tcl::mathop commands. Moved to a new
+	file to make tclCompCmds.c more focused in purpose.
 
-	* tests/expr.test (expr-22.*): Marked as non-portable because it seems
-	that these tests have an annoying tendency to fail in unexpected ways.
-	[Bugs 584825, 584950, 585986]
+2006-11-23  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-07-30  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* generic/tclCompCmds.c (Tcl*OpCmd, TclCompile*OpCmd):
+	* generic/tclBasic.c (Tcl_CreateInterp): Partial implementation of
+	TIP#174; the commands are compiled, but (mostly) not interpreted yet.
 
-	* tests/io.test:
-	* generic/tclIO.c (WriteChars): Added flag to break out of loop if
-	nothing of the input is consumed at all, to prevent infinite looping
-	of called with a non-UTF-8 string. Fixes [Bug 584603] partially.
-	Added new test "io-60.1". Might need additional changes to Tcl_Main so
-	that unprintable results are printed as binary data.
+2006-11-22  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-07-29  Mo DeJong  <mdejong@users.sourceforge.net>
+	TIP#269 IMPLEMENTATION
 
-	* unix/Makefile.in: Use CC_SEARCH_FLAGS instead of LD_SEARCH_FLAGS
-	when linking with ${CC}.
-	* unix/configure: Regen.
-	* unix/configure.in: Don't subst CC_SEARCH_FLAGS or LD_SEARCH_FLAGS
-	since this is now done in tcl.m4.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Document and set CC_SEARCH_FLAGS
-	whenever LD_SEARCH_FLAGS is set. [Patch 588290]
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Implementation of the [string
+	* tests/string.test (string-25.*):	 is list] command, based on
+	* doc/string.n:				 work by Joe Mistachkin, with
+	enhancements by Donal Fellows for better failindex behaviour.
 
-2002-07-29  Reinhard Max  <max@suse.de>
+2006-11-22  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tcl.m4 (SC_SERIAL_PORT): Fixed detection for cases when
-					configure's stdin is not a tty.
+	* tools/genWinImage.tcl (removed):	Removed two files used in
+	* win/README.binary (removed):	production of binary distributions
+	for Windows, a task we no longer perform. [Bug 1476980]
+	* generic/tcl.h:	Remove mention of win/README.binary in comment
 
-	* unix/tclUnixPort.h:
-	* generic/tclIOSock.c:		Changed size_t to socklen_t in
-					socket-related function calls.
+	* generic/tcl.h:	Moved TCL_REG_BOSONLY #define from tcl.h to
+	* generic/tclInt.h:	tclInt.h. Only know user is Expect, which
+	already #include's tclInt.h. No need to continue greater exposure.
+	[Bug 926500]
 
-	* unix/configure.in:		Added test and fallback definition
-					for socklen_t.
+2006-11-20  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/configure:		generated.
+	* generic/tclBasic.c (Tcl_CreateInterp, TclHideUnsafeCommands):
+	* library/init.tcl: Refactored the [chan] command's guts so that it
+	does not use aliases to global commands, making the code more robust.
 
-2002-07-29  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-17  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclObj.c: fixed a comment
+	* generic/tclExecute.c (INST_EXPON):	Corrected crash on
+	[expr 2**(1<<63)]. Was operating on cleared bignum Tcl_Obj.
 
-	* generic/tcl.h:
-	* generic/tclBasic.c:
-	* generic/tclInterp.c: added the new flag TCL_EVAL_INVOKE to the
-	interface of the Tcl_Eval* functions, removing the
-	TCL_EVAL_NO_TRACEBACK added yesterday: alias invocations not only
-	require no tracebacks, but also look up the command name in the global
-	scope - see new test interp-9.4
-	* tests/interp.test: added 9.3 to test for safety of aliases to hidden
-	commands, 9.4 to test for correct command lookup scope.
-
-2002-07-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* generic/regc_locale.c (cclass): [[:xdigit:]] is only a defined
-	concept on western characters, so should not allow any unicode digit,
-	and hence number of ranges in [[:xdigit:]] is fixed.
-	* tests/reg.test: Added test to detect the bug.
-	* generic/regc_cvec.c (newcvec): Corrected initial size value in
-	character vector structure. [Bug 578363] Many thanks to
-	pvgoran@users.sf.net for tracking this down.
-
-2002-07-28  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-16  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tcl.h:
-	* generic/tclBasic.c: added the new flag TCL_EVAL_NO_TRACEBACK to the
-	interface of the Tcl_Eval* functions. Modified the error message for
-	too many nested evaluations.
-	* generic/tclInterp.h: changed the Alias struct to be of variable
-	length and store the prefix arguments directly (instead of a pointer
-	to a Tcl_Obj list). Made AliasObjCmd call Tcl_EvalObjv instead of
-	TclObjInvoke - thus making aliases trigger execution traces. [Bug
-	582522]
-	* tests/interp.test:
-	* tests/stack.test: adapted to the new error message.
-	* tests/trace.test: added tests for aliases firing the exec traces.
+	* doc/apply.n, doc/chan.n: Added examples.
 
-2002-07-27  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-11-15  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/Makefile.in: Revert fix for Tcl bug 529801 since it was
-	incorrect and broke the build on other systems. Fix [Bug 587299]. Add
-	MAJOR_VERSION, MINOR_VERSION, PATCH_LEVEL, SHLIB_LD_FLAGS,
-	SHLIB_LD_LIBS, CC_SEARCH_FLAGS, LD_SEARCH_FLAGS, and LIB_FILE
-	variables to support more generic library build/install rules.
-	* unix/configure: Regen.
-	* unix/configure.in: Move AC_PROG_RANLIB into tcl.m4. Move shared
-	build test and setting of MAKE_LIB and MAKE_STUB_LIB into tcl.m4. Move
-	subst of a number of variables into tcl.m4 where they are defined.
-	* unix/tcl.m4 (SC_ENABLE_SYMBOLS, SC_CONFIG_CFLAGS):
-	Subst vars where they are defined. Add MAKE_LIB, MAKE_STUB_LIB,
-	INSTALL_LIB, and INSTALL_STUB_LIB rules to deal with the ugly details
-	of running ranlib on static libs at build and install time. Replace
-	TCL_SHLIB_LD_EXTRAS with SHLIB_LD_FLAGS and use it when building a
-	shared library.
-	* unix/tclConfig.sh.in: Add TCL_CC_SEARCH_FLAGS.
+	TIP#270 IMPLEMENTATION
 
-2002-07-26  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tcl.decls:		New public routines Tcl_ObjPrintf,
+	* generic/tclStringObj.c:	Tcl_AppendObjToErrorInfo, Tcl_Format,
+	* generic/tclInt.h:		Tcl_AppendLimitedToObj,
+	Tcl_AppendFormatToObj and Tcl_AppendPrintfToObj. Former internal
+	versions removed.
 
-	* generic/tclExecute.c: fixed Tcl_Obj leak in code corresponding to
-	the macro NEXT_INST_V(x, 0, 1). [Bug 587495]
+	* generic/tclDecls.h:		make genstubs
+	* generic/tclStubInit.c:
 
-2002-07-26  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclBasic.c:		Updated callers.
+	* generic/tclCkalloc.c:
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
+	* generic/tclDictObj.c:
+	* generic/tclExecute.c:
+	* generic/tclIORChan.c:
+	* generic/tclIOUtil.c:
+	* generic/tclMain.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclPkg.c:
+	* generic/tclProc.c:
+	* generic/tclStrToD.c:
+	* generic/tclTimer.c:
+	* generic/tclUtil.c:
+	* unix/tclUnixFCmd.c:
 
-	* generic/tclVar.c (TclObjLookupVar): leak fix and improved comments.
+	* tools/genStubs.tcl:	Updated script to no longer produce the
+	_ANSI_ARGS_ wrapper in generated declarations. Also revised to accept
+	variadic prototypes with more than one fixed argument. (This is
+	possible since TCL_VARARGS and its limitations are no longer in use).
+	* generic/tcl.h:	Some reordering so that macro definitions do
+	not interfere with the now _ANSI_ARGS_-less stub declarations.
 
-2002-07-26  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclDecls.h:		make genstubs
+	* generic/tclIntDecls.h:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclPlatDecls.h:
+	* generic/tclTomMathDecls.h:
 
-	* generic/tclVar.c (TclLookupVar): removed early returns that
-	prevented the parens from being restored. also removed goto label as
-	it was not necessary.
+2006-11-15  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-07-24  Miguel Sofer  <msofer@users.sourceforge.net>
+	* doc/ChnlStack.3, doc/CrtObjCmd.3, doc/GetIndex.3, doc/OpenTcp.3:
+	* doc/chan.n, doc/fconfigure.n, doc/fcopy.n, doc/foreach.n:
+	* doc/history.n, doc/http.n, doc/library.n, doc/lindex.n:
+	* doc/lrepeat.n, doc/lreverse.n, doc/pkgMkIndex.n, doc/re_syntax.n:
+	Convert \fP to \fR so that man-page scrapers have an easier time.
 
-	* generic/tclExecute.c:
-	* tests/expr-old.test: fix for erroneous error messages in [expr],
-	[Bug 587140] reported by Martin Lemburg.
+2006-11-14  Don Porter	<dgp@users.sourceforge.net>
 
-2002-07-25  Joe English  <jenglish@users.sourceforge.net>
+	TIP#261 IMPLEMENTATION
 
-	* generic/tclProc.c: fix for [Tk Bug 219218] "error handling with
-	bgerror in Tk"
+	* generic/tclNamesp.c:	[namespace import] with 0 arguments
+	introspects the list of imported commands.
 
-2002-07-24  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-13  Kevin B. Kenny  <kennykb@users.sourceforge.net>
 
-	* generic/tclExecute.c: restoring full TCL_COMPILE_DEBUG
-	functionality.
+	* generic/tclThreadStorage.c (Tcl_InitThreadStorage):
+	(Tcl_FinalizeThreadStorage): Silence a compiler warning about
+	presenting a volatile pointer to 'memset'.
 
-2002-07-24  Don Porter  <dgp@users.sourceforge.net>
+2006-11-13  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/unixInit.test: relaxed unixInit-3.1 to accept iso8859-15 as a
-	valid C encoding. [Bug 575336]
+	* generic/tclIO.c:	When [gets] on a binary channel needs to use
+	the "iso8859-1" encoding, save a copy of that encoding per-thread to
+	avoid repeated freeing and re-loading of it from the file system. This
+	replaces the cached copy of this encoding that the platform
+	initialization code used to keep in pre-8.5 releases.
 
-2002-07-24  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-11-13  Daniel Steffen  <das@users.sourceforge.net>
 
-	* generic/tclExecute.c: restoring the tcl_traceCompile functionality
-	while I repair tcl_traceExec. The core now compiles and runs also
-	under TCL_COMPILE_DEBUG, but execution in the bytecode engine can
-	still not be traced.
+	* generic/tclCompExpr.c:	Fix gcc warnings about 'cast to/from
+	* generic/tclEncoding.c:	pointer from/to integer of different
+	* generic/tclEvent.c:		size' on 64-bit platforms by casting
+	* generic/tclExecute.c:		to intermediate types
+	* generic/tclHash.c:		intptr_t/uintptr_t via new PTR2INT(),
+	* generic/tclIO.c:		INT2PTR(), PTR2UINT() and UINT2PTR()
+	* generic/tclInt.h:		macros. [Patch 1592791]
+	* generic/tclProc.c:
+	* generic/tclTest.c:
+	* generic/tclThreadStorage.c:
+	* generic/tclTimer.c:
+	* generic/tclUtil.c:
+	* unix/configure.in:
+	* unix/tclUnixChan.c:
+	* unix/tclUnixPipe.c:
+	* unix/tclUnixPort.h:
+	* unix/tclUnixTest.c:
+	* unix/tclUnixThrd.c:
 
-2002-07-24  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* unix/Makefile.in:
-	* unix/configure.in: corrected fix for [Bug 529801]: ranlib only
-	needed for static builds on Mac OS X.
-	* unix/configure: Regen.
-	* unix/tclLoadDyld.c: fixed small bugs introduced by Vince,
-	implemented library unloading correctly (needs OS X 10.2).
+2006-11-12  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-07-23  Joe English  <jenglish@users.sourceforge.net>
+	* generic/tclInt.h, generic/tclInt.decls: Transfer TclPtrMakeUpvar and
+	TclObjLookupVar to the internal stubs table.
 
-	* doc/OpenFileChnl.3: (Updates from Larry Virden)
-	* doc/open.n:
-	* doc/tclsh.1: Fix section numbers in Unix man page references.
-	* doc/lset.n:  In EXAMPLES section, include command to set the initial
-	value used in subsequent examples.
-	* doc/http.n: Package version updated to 2.4.
+2006-11-10  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+	* tests/fCmd.test (fCmd-6.26): fix failure when env(HOME) path
+	contains symlinks.
 
-	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Enable 64 bit compilation when using
-	the native compiler on a 64 bit version of IRIX. [Bug 219220]
+	* macosx/Tcl.xcodeproj/project.pbxproj: remove tclParseExpr.c; when
+	running testsuite from inside Xcdoe, skip stack-3.1 (it only fails
+	under those circumstances).
 
-2002-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+	* unix/tcl.m4 (Darwin): suppress linker arch warnings when building
+	universal for both 32 & 64 bit and no 64bit CoreFoundation is
+	available; sync with tk tcl.m4 change.
+	* unix/configure.in: whitespace.
+	* unix/configure: autoconf-2.59
 
-	* unix/Makefile.in: Combine ranlib tests and avoid printing unless
-	ranlib is actually run.
+2006-11-09  Don Porter	<dgp@users.sourceforge.net>
 
-2002-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclParseExpr.c (removed):	Moved all the code of
+	* generic/tclCompExpr.c:	tclParseExpr.c into tclCompExpr.c.
+	* unix/Makefile.in:	This sets the stage for expr compiling to work
+	* win/Makefile.in:	directly with the full parse tree structures,
+	* win/makefile.bc:	and not have to pass through the information
+	* win/makefile.vc:	lossy format of an array of Tcl_Tokens.
+	* win/tcl.dsp:
 
-	* unix/tcl.m4 (SC_PATH_X): Set XINCLUDES to "" instead of "# no
-	special path needed" or "# no include files found" when x headers
-	cannot be located.
+2006-11-09  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-07-22  Vince Darley  <vincentdarley@users.sourceforge.net>
+	TIP#272 IMPLEMENTATION
 
-	* generic/tclIOUtil.c: made tclNativeFilesystem static (since 07-19
-	changes removed its usage elsewhere), and added comments about its
-	usage.
-	* generic/tclLoad.c:
-	* generic/tcl.h:
-	* generic/tcl.decls:
-	* doc/FileSystem.3: converted last load-related ClientData parameter
-	to Tcl_LoadHandle opaque structure, removing a couple of casts in the
-	process.
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):    Implementation of the
+	* tests/string.test, tests/stringComp.test: [string reverse] command
+	* doc/string.n:				    from TIP#272.
 
-	* generic/tclInt.h: removed tclNativeFilesystem declaration since it
-	is now static again.
+	* generic/tclCmdIL.c (Tcl_LreverseObjCmd): Implementation of the
+	* generic/tclBasic.c, generic/tclInt.h:	   [lreverse] command from
+	* tests/cmdIL.test (cmdIL-7.*):		   TIP#272.
+	* doc/lreverse.n:
 
-2002-07-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-11-08  Donal K. Fellows  <dkf@users.sf.net>
 
-	* tests/expr.test (expr-22.*): Added tests to help detect the
-	corrected handling.
-	* generic/tclExecute.c (IllegalExprOperandType): Improved error
-	message generated when attempting to manipulate Inf and NaN values.
-	* generic/tclParseExpr.c (GetLexeme): Allowed parser to recognise
-	'Inf' as a floating-point number. [Bug 218000]
+	* generic/tclIO.c, generic/tclPkg.c: Style & clarity rewrites.
 
-2002-07-21  Don Porter  <dgp@users.sourceforge.net>
+2006-11-07  Andreas Kupries  <andreask@activestate.com>
 
-	* tclIOUtil.c: Silence compiler warning. [Bug 584408].
+	* unix/tclUnixFCmd.c (CopyFile): Added code to fall back to a
+	hardwired default block size should the filesystem report a bogus
+	value. [Bug 1586470]
 
-2002-07-19  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-11-04  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclIOUtil.c: fix to GetFilesystemRecord
-	* win/tclWinFile.c:
-	* unix/tclUnixFile.c: fix to subtle problem with links shown up by
-	latest tclkit builds.
+	* generic/tclStringObj.c:	Changed Tcl_ObjPrintf() response to an
+	invalid format specifier string. No longer panics; now produces an
+	error message as output.
 
-2002-07-19  Mo DeJong  <mdejong@users.sourceforge.net>
+	TIP#274 IMPLEMENTATION
 
-	* unix/configure:
-	* unix/configure.in:
-	* win/configure:
-	* win/configure.in: Add AC_PREREQ(2.13) in an attempt to make it more
-	clear that the configure scripts must be generated with autoconf
-	version 2.13. [Bug 583573]
+	* generic/tclParseExpr.c:	Exponentiation operator is now right
+	* tests/expr.test:		associative. [Patch 1556802]
 
-2002-07-19  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-11-03  Miguel Sofer  <msofer@users.sf.net>
 
-	* unix/Makefile.in: fix to build on MacOS X [Bug 529801], bug report
-	and fix from jcw.
+	* generic/tclBasic.c (TEOVI): fix por possible leak of a Command in
+	the presence of execution traces that delete it.
 
-2002-07-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclBasic.c (TEOVI):
+	* tests/trace.test (trace-21.11): fix for [Bug 1590232], execution
+	traces may cause a second command resolution in the wrong namespace.
+
+2006-11-03  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* tests/event.test (event-11.5):	Rewrote tests to stop Tcl from
+	* tests/io.test (multiple tests):	opening sockets that are
+	* tests/ioCmd.test (iocmd-15.1,16,17):	reachable from outside hosts
+	* tests/iogt.test (__echo_srv__.tcl):	where not necessary. This is
+	* tests/socket.test (multiple tests):	noticably annoying on some
+	* tests/unixInit.test (unixInit-1.2):	systems (e.g., Windows).
+
+2006-11-02  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.xcodeproj/project.pbxproj: check autoconf/autoheader exit
+	status and stop build if they fail.
+
+2006-11-02  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* doc/ParseCmd.3, doc/Tcl.n, doc/eval.n, doc/exec.n:
+	* doc/fconfigure.n, doc/interp.n, doc/unknown.n:
+	* library/auto.tcl, library/init.tcl, library/package.tcl:
+	* library/safe.tcl, library/tm.tcl, library/msgcat/msgcat.tcl:
+	* tests/all.tcl, tests/basic.test, tests/cmdInfo.test:
+	* tests/compile.test, tests/encoding.test, tests/execute.test:
+	* tests/fCmd.test, tests/http.test, tests/init.test:
+	* tests/interp.test, tests/io.test, tests/ioUtil.test:
+	* tests/iogt.test, tests/namespace-old.test, tests/namespace.test:
+	* tests/parse.test, tests/pkg.test, tests/pkgMkIndex.test:
+	* tests/proc.test, tests/reg.test, tests/trace.test:
+	* tests/upvar.test, tests/winConsole.test, tests/winFCmd.test:
+	* tools/tclZIC.tcl:
+	* generic/tclParse.c (Tcl_ParseCommand): Replace {expand} with {*}
+	officially (TIP #293). Leave -DALLOW_EXPAND=0|1 option to keep
+	{expand} syntax for transition users. [Bug 1589629]
+
+2006-11-02  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclBasic.c, generic/tclInterp.c, generic/tclProc.c: Silence
+	warnings from gcc over signed/unsigned and TclStackAlloc().
+	* generic/tclCmdMZ.c: Update to more compact and clearer coding style.
+
+2006-11-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCmdAH.c:	Further revisions to produce the routines
+	* generic/tclInt.h:	TclFormat() and TclAppendFormatToObj() that
+	* generic/tclNamesp.c:	accept (objc, objv) arguments rather than
+	* generic/tclStringObj.c:	any varargs stuff.
+
+	* generic/tclBasic.c:	Further revised TclAppendPrintToObj() and
+	* generic/tclCkalloc.c: TclObjPrintf() routines to panic when unable
+	* generic/tclCmdAH.c:	to complete their formatting operations,
+	* generic/tclCmdIL.c:	rather than report an error message. This
+	* generic/tclCmdMZ.c:	means an interp argument for error message
+	* generic/tclDictObj.c: recording is no longer needed, further
+	* generic/tclExecute.c: simplifying the interface for callers.
+	* generic/tclIORChan.c:
+	* generic/tclIOUtil.c:
+	* generic/tclInt.h:
+	* generic/tclMain.c:
+	* generic/tclNamesp.c:
+	* generic/tclParseExpr.c:
+	* generic/tclPkg.c:
+	* generic/tclProc.c:
+	* generic/tclStringObj.c:
+	* generic/tclTimer.c:
+	* generic/tclUtil.c:
+	* unix/tclUnixFCmd.c:
 
-	* win/tclWinSerial.c (no_timeout): Made this variable static.
+2006-11-02  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* generic/tclExecute.c, generic/tclCompile.c, generic/tclBasic.c:
-	* generic/tclCompile.h (builtinFuncTable, instructionTable): Added
-	prefix to these symbols because they are visible outside the Tcl
-	library.
+	* tests/winPipe.test (winpipe-4.[2345]): Made robust when run in
+	directory with spaces in its name.
 
-	* generic/tclCompExpr.c (operatorTable):
-	* unix/tclUnixTime.c (tmKey):
-	* generic/tclIOUtil.c (theFilesystemEpoch, filesystemWantToModify,
-	(filesystemIteratorsInProgress, filesystemOkToModify): Made these
-	variables static.
+	* generic/tclCmdAH.c: Clean up uses of cast NULLs.
 
-	* unix/tclUnixFile.c:		Renamed nativeFilesystem to
-	* win/tclWinFile.c:		tclNativeFilesystem and declared
-	* generic/tclIOUtil.c:		it properly in tclInt.h
-	* generic/tclInt.h:
+	* generic/tclInterp.c (AliasObjCmd): Added more explanatory comments.
 
-	* generic/tclUtf.c (totalBytes): Made this array static and const.
+	* generic/tclBasic.c (TclEvalObjvInternal): Rewrote so that comments
+	are relevant and informative once more. Also made the unknown handler
+	processing use the Tcl execution stack for working space, and not the
+	general heap.
 
-	* generic/tclParse.c (typeTable): Made this array static and const.
-	(Tcl_ParseBraces): Simplified error handling case so that scans are
-	only performed when needed, and flags are simpler too.
+2006-11-01  Daniel Steffen  <das@users.sourceforge.net>
 
-	* license.terms: Added AS to list of copyright holders; it's only fair
-	for the current gatekeepers to be listed here!
+	* unix/tclUnixPort.h: ensure MODULE_SCOPE is defined before use, so
+	that tclPort.h can once again be included without tclInt.h.
 
-	* tests/cmdMZ.test: Renamed constraint for clarity. [Bug 583427]
-	Added tests for the [time] command, which was previously only
-	indirectly tested!
+	* generic/tclEnv.c (Darwin): mark _environ symbol as unexported even
+	when MODULE_SCOPE != __private_extern__.
 
-2002-07-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-10-31  Don Porter	<dgp@users.sourceforge.net>
 
+	* generic/tclBasic.c:	Refactored and renamed the routines
+	* generic/tclCkalloc.c: TclObjPrintf, TclFormatObj, and
+	* generic/tclCmdAH.c:	TclFormatToErrorInfo to a new set of routines
+	* generic/tclCmdIL.c:	TclAppendPrintfToObj, TclAppendFormatToObj,
+	* generic/tclCmdMZ.c:	TclObjPrintf, and TclObjFormat, with the
+	* generic/tclDictObj.c: intent of making the latter list, plus
+	* generic/tclExecute.c: TclAppendLimitedToObj and
+	* generic/tclIORChan.c: TclAppendObjToErrorInfo, public via a revised
+	* generic/tclIOUtil.c:	TIP 270.
 	* generic/tclInt.h:
-	* generic/tcl.h:
-	* */*Load*.c: added comments on changes of 07/17 and replaced
-	clientData with Tcl_LoadHandle in all locations.
-
-	* generic/tclFCmd.c:
-	* tests/fileSystem.test: fixed a 'knownBug' with 'file
-	attributes ""'
-	* tests/winFCmd.test:
-	* tests/winPipe.test:
-	* tests/fCmd.test:
-	* tessts/winFile.test: added 'pcOnly' constraint to some tests to make
-	for more useful 'tests skipped' log from running all tests on
-	non-Windows platforms.
-
-2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclBasic.c (CallCommandTraces): delete traces now receive
-	the FQ old name of the command. [Bug 582532] (Don Porter)
+	* generic/tclMain.c:
+	* generic/tclNamesp.c:
+	* generic/tclParseExpr.c:
+	* generic/tclPkg.c:
+	* generic/tclProc.c:
+	* generic/tclStringObj.c:
+	* generic/tclTimer.c:
+	* generic/tclUtil.c:
+	* unix/tclUnixFCmd.c:
 
-2002-07-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-10-31  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/ioUtil.test: added constraints to 1.4,2.4 so they don't run
-	outside of tcltest. [Bugs 583276,583277]
+	* generic/tclBasic.c, generic/tcl.h, generic/tclInterp.c:
+	* generic/tclNamesp.c: removing the flag bit TCL_EVAL_NOREWRITE, the
+	last remnant of the callObjc/v fiasco. It is not needed, as it is now
+	always set and checked or'ed with TCL_EVAL_INVOKE.
 
-2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-10-31  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* generic/tclVar.c (DupParsedVarName): nasty bug fixed, reported by
-	Vince Darley.
+	* win/rules.vc: Fix for [Bug 1582769] - options conflict with VC2003.
 
-2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-10-31  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclVar.c (TclPtrIncrVar): missing CONST in declarations,
-	inconsistent with tclInt.h. Thanks to Vince Darley for reporting, boo
-	to gcc for not complaining.
+	* generic/tclBasic.c, generic/tclNamesp.c, generic/tclProc.c:
+	* generic/tclInt.h: Removed the callObjc and callObjv fields from the
+	Interp structure. They did not function correctly and made other parts
+	of the core amazingly complex, resulting in a substantive change to
+	[info level] behaviour. [Bug 1587618]
+	* library/clock.tcl: Removed use of [info level 0] for calculating the
+	command name as used by the user and replace with a literal. What's
+	there now is sucky, but at least appears to be right to most users.
+	* tests/namespace.test (namespace-42.7,namespace-47.1): Reverted
+	changes to these tests.
+	* tests/info.test (info-9.11,info-9.12): Added knownBug constraint
+	since these tests require a different behaviour of [info level] than
+	is possible because of other dependencies.
 
-2002-07-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-10-30  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclInt.h:
-	* generic/tclIOUtil.c:
-	* generic/tclLoadNone.c:
-	* unix/tclLoadAout.c:
-	* unix/tclLoadDl.c:
-	* unix/tclLoadDld.c:
-	* unix/tclLoadDyld.c:
-	* unix/tclLoadNext.c:
-	* unix/tclLoadOSF.c:
-	* unix/tclLoadShl.c:
-	* mac/tclMacLoad.c:
-	* win/tclWinLoad.c: modified to move more functionality to the generic
-	code and avoid duplication. Partial replacement of internal uses of
-	clientData with opaque Tcl_LoadHandle. A little further work still
-	needed, but significant changes are done.
-
-2002-07-17  D. Richard Hipp    <drh@hwaci.com>
-
-	* library/msgcat/msgcat.tcl: fix a comment that was causing problems
-	for programs (ex: mktclapp) that embed the initialization scripts in
-	strings.
-
-2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+	* tools/tcltk-man2html.tcl (option-toc): handle any kind of options
+	defined toc section (needed for ttk docs)
 
-	* generic/tclInt.decls:
-	* generic/tclIntDecls.h:
-	* generic/tclStubInit.c:
-	* generic/tclVar.c: removing the now redundant functions to access
-	indexed variables: Tcl(Get|Set|Incr)IndexedScalar() and
-	Tcl(Get|Set|Incr)ElementOfIndexedArray().
+2006-10-30  Miguel Sofer  <msofer@users.sf.net>
 
-2002-07-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclBasic.c (TEOVI): insured that the interp's callObjc/v
+	fields are restored after traces run, as they be spoiled. This was
+	causing a segfault in tcllib's profiler tests.
 
-	* generic/tclExecute.c (TclExecuteByteCode): Minor fixes to make this
-	file compile with SunPro CC...
+2006-10-30  Don Porter	<dgp@users.sourceforge.net>
 
-2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclExecute.c (INST_MOD): Corrected improper testing of the
+	* tests/expr.test:		   sign of bignums when applying Tcl's
+	division rules. Thanks to Peter Spjuth. [Bug 1585704]
 
-	* generic/tclExecute.c: modified to do variable lookup explicitly, and
-	then either inlining the variable access or else calling the new
-	TclPtr(Set|Get|Incr)Var functions in tclVar.c
-	* generic/tclInt.h: declare some functions previously local to
-	tclVar.c for usage by TEBC.
-	* generic/tclVar.c: removed local declarations; moved all special
-	accessor functions for indexed variables to the end of the file - they
-	are unused and ready for removal, but left there for the time being as
-	they are in the internal stubs table.
+2006-10-29  Miguel Sofer  <msofer@users.sf.net>
 
-	** WARNING FOR BYTECODE MAINTAINERS **
-	TCL_COMPILE_DEBUG is currently not functional; will be fixed ASAP.
+	* generic/tclNamesp.c (EnsembleImplementationCmd):
+	* tests/namespace.test (47.7-8): reverted a wrong "optimisation" that
+	completely broke snit; added two tests.
 
-2002-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-10-28  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/Makefile.in:
-	* win/Makefile.in: Add a more descriptive warning in the event `make
-	genstubs` needs to be rerun.
+	* generic/tclProc.c (ObjInterpProcEx, TclObjInterpProcCore): Split the
+	core of procedures to make it easier to build procedure-like code
+	without going through horrible contortions. This is the last critical
+	component to make advanced OO systems workable as simple loadable
+	extensions. TOIPC is now in the internal stub table.
+	(MakeProcError, MakeLambdaError): Refactored ProcessProcResultCode to
+	be simpler, some of which goes to TclObjInterpProcCore, and the rest
+	of which is now in these far simpler routines which just do errorInfo
+	stack generation for different types of procedure-like entity.
+	* tests/apply.test (apply-5.1): Updated to expect the more informative
+	form of message.
 
-2002-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-10-27  Donal K. Fellows  <dkf@users.sf.net>
 
-	* unix/Makefile.in: Use dltest.marker file to keep track of when the
-	dltest package is up to date. This fixes [Bug 575768] since tcltest is
-	no longer linked every time.
-	* unix/dltest/Makefile.in: Create ../dltest.marker after a successful
-	`make all` run in dltest.
+	* generic/tclVar.c (HasLocalVars): New macro to make various bits and
+	pieces cleaner.
 
-2002-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclNamesp.c (TclSetNsPath): Expose SetNsPath() through
+	internal stubs table with semi-external name.
 
-	* unix/configure: Regen.
-	* unix/configure.in: Remove useless subst of TCL_BIN_DIR.
+	* generic/tclInt.h (CallFrame): Add a field for handling context data
+	for extensions (like object systems) that should be tied to a call
+	frame (and not a command or interpreter).
 
-2002-07-15  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclBasic.c (TclRenameCommand): Change to take CONST args;
+	they were only ever used in a constant way anyway, so this appears to
+	be a spot that was missed during TIP#27 work.
 
-	* generic/tclVar.c: inaccurate comment fixed
+2006-10-26  Miguel Sofer  <msofer@users.sf.net>
 
-2002-07-15  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclProc.c (SetLambdaFromAny): minor change, eliminate
+	redundant call to Tcl_GetString (thanks aku).
 
-	* generic/tclBasic.c (Tcl_AddObjErrorInfo):
-	* generic/tclExecute.c (TclUpdateReturnInfo):
-	* generic/tclInt.h:
-	* generic/tclProc.c:
-	Added two Tcl_Obj to the ExecEnv structure to hold the fully qualified
-	names "::errorInfo" and "::errorCode" to cache the addresses of the
-	corresponding variables. The two most frequent setters of these
-	variables now profit from the new variable name caching.
+	* generic/tclInterp.c (ApplyObjCmd):
+	* generic/tclNamesp.c (EnsembleImplementationCmd): replaced ckalloc
+	(heap) with TclStackAlloc (execution stack).
 
-2002-07-15  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-10-24  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclVar.c: refactorisation to reuse already looked-up Var
-	pointers; definition of three new Tcl_Obj types to cache variable name
-	parsing and lookup for later reuse; modification of internal functions
-	to profit from the caching.
+	* tests/info.test (info-9.11-12): tests for [Bug 1577492]
+	* tests/apply.test (apply-4.3-5): tests for [Bug 1574835]
 
-	* generic/tclInt.decls:
-	* generic/tclInt.h:
-	* generic/tclIntDecls.h:
-	* generic/tclNamesp.c: adding CONST qualifiers to variable names
-	passed to Tcl_FindNamespaceVar and to variable resolvers; adding CONST
-	qualifier to the 'msg' argument to TclLookupVar. Needed to avoid code
-	duplication in the new tclVar.c code.
+	* generic/tclProc.c (ObjInterpProcEx): disable itcl hacks for calls
+	from ApplyObjCmd (islambda==1), as they mess apply's error messages
+	[Bug 1583266]
 
-	* tests/set-old.test:
-	* tests/var.test: slight modification of error messages due to the
-	modifications in the tclVar.c code.
+2006-10-23  Miguel Sofer  <msofer@users.sf.net>
 
-2002-07-15  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclProc.c (ApplyObjCmd): fix wrong#args for apply by using
+	the ensemble rewrite engine. [Bug 1574835]
+	* generic/tclInterp.c (AliasObjCmd): previous commit missed usage of
+	TCL_EVAL_NOREWRITE for aliases.
 
-	* tests/unixInit.test:	Improved constraints to protect /tmp. [Bug
-	581403]
+	* generic/tclBasic.c (TclEvalObjvInternal): removed redundant check
+	for ensembles. [Bug 1577628]
 
-2002-07-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* library/clock.tcl (format, scan): corrected wrong # args messages to
+	* tests/clock.test (3.1, 34.1):	    make use of the new rewrite
+	capabilities of [info level]
 
-	* tests/winFCmd.test: renamed 'win2000' and 'notWin2000' to more
-	appropriate constraint names.
-	* win/tclWinFile.c: updated comments to reflect 07-11 changes.
-	* win/tclWinFCmd.c: made ConvertFileNameFormat static again, since no
-	longer used in tclWinFile.c
-	* mac/tclMacFile.c: completed TclpObjLink implementation which was
-	previously lacking.
-	* generic/tclIOUtil.c: comment cleanup and code speedup.
+	* generic/tcl.h:	   Lets TEOV update the iPtr->callObj[cv] new
+	* generic/tclBasic.c:	   fields, except when the flag bit
+	* generic/tclInt.h:	   TCL_EVAL_NOREWRITE is present. These values
+	* generic/tclNamesp.c:	   are used by Tcl_PushCallFrame to initialise
+	* generic/tclProc.c:	   the frame's obj[cv] fields, and allows
+	* tests/namespace.test:	   [info level] to know and use ensemble
+	rewrites. [Bug 1577492]
 
-2002-07-14  Don Porter  <dgp@users.sourceforge.net>
+	***POTENTIAL INCOMPATIBILITY***
+	The return value from [info level 0] on interp alias calls is changed:
+	previously returned the target command (including curried values), now
+	returns the source - what was actually called.
+
+2006-10-23  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tcl.h:	   Modified the Tcl call stack so there is
+	* generic/tclBasic.c:	   always a valid CallFrame, even at level 0
+	* generic/tclCmdIL.c:	   [Patch 1577278]. Most of the changes
+	* generic/tclInt.h:	   involve removing tests for a NULL
+	* generic/tclNamesp.c:	   iPtr->(var)framePtr. There is now a
+	* generic/tclObj.c:	   CallFrame pushed at interp creation with a
+	* generic/tclProc.c:	   pointer to it stored in iPtr->rootFramePtr.
+	* generic/tclTrace.c:	   A second unused field in Interp is
+	* generic/tclVar.c:	   hijacked to enable further functionality,
+	currently unused (but with several FRQs depending on it).
 
-	* generic/tclInt.h:	Removed declarations that duplicated entries
-	in the (internal) stub table.
+	***POTENTIAL INCOMPATIBILITY***
+	Any user that includes tclInt.h and needs to determine if it is
+	running at level 0 should change (iPtr->varFramePtr == NULL) to
+	(iPtr->varFramePtr == iPtr->rootFramePtr).
 
-	* library/tcltest/tcltest.tcl:	Corrected errors in handling of
-	configuration options -constraints and -limitconstraints.
+2006-10-23  Don Porter	<dgp@users.sourceforge.net>
 
-	* README:		Bumped HEAD to version 8.4b2 so we can
-	* generic/tcl.h:	distinguish it from the 8.4b1 release.
+	* README:		Bump version number to 8.5a6
+	* generic/tcl.h:
 	* tools/tcl.wse.in:
-	* unix/configure*:
+	* unix/configure.in:
 	* unix/tcl.spec:
 	* win/README.binary:
-	* win/configure*:
-
-2002-07-11  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* doc/file.n:
-	* win/tclWinFile.c: on Win 95/98/ME the long form of the path is used
-	as a normalized form. This is required because short forms are not a
-	robust representation. The file normalization function has been sped
-	up, but more performance gains might be possible, if speed is still an
-	issue on these platforms.
-
-2002-07-11  Don Porter  <dgp@users.sourceforge.net>
-
-	* library/tcltest/tcltest.tcl: Corrected reaction to existing but
-	false ::tcl_interactive.
-
-	* doc/Hash.3: Overlooked CONST documentation update.
-
-2002-07-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* generic/tclCkalloc.c: ckalloc() and friends take the block size as
-	an unsigned, so we should use %ud when reporting it in fprintf() and
-	panic().
-
-2002-07-11  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclCompile.c: now setting local vars undefined at compile
-	time, instead of waiting until the proc is initialized.
-	* generic/tclProc.c: use macro TclSetVarUndefined instead of directly
-	setting the flag.
-
-2002-07-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* win/configure.in:
 
-	* tests/cmdAH.test: [file attr -perm] is Unix-only, so add [catch]
-	when not inside a suitably-protected test.
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-2002-07-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-10-21  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/unixFCmd.test, tests/fileName.test:
-	* tests/fCmd.test: Removed [exec] of Unix utilities that have
-	equivalents in standard Tcl. [Bug 579268] Also simplified some of
-	unixFCmd.test while I was at it.
+	* generic/tcl.h, generic/tclHash.c: Tcl_FindHashEntry now calls
+	Tcl_CreateHashEntry with a newPtr set to NULL: this would have caused
+	a segfault previously and eliminates duplicated code. A macro has been
+	added to tcl.h (only used when TCL_PRESERVE_BINARY_COMPATABALITY is
+	not set - i.e., not by default).
 
-2002-07-10  Don Porter  <dgp@users.sourceforge.net>
+2006-10-20  Reinhard Max  <max@tclers.tk>
 
-	* tests/tcltest.test:  Greatly reduced the number of [exec]s, using
-	slave interps instead.
-	* library/tcltest/tcltest.tcl:	Fixed bug uncovered in the conversion
-	where a message was written to stdout instead of [outputChannel].
+	* unix/configure.in: Added autodetection for OS-supplied timezone
+	* unix/Makefile.in:  files and configure switches to override the
+	* unix/configure:    detected default.
 
-	* tests/basic.test:	Cleaned up, constrained, and reduced the
-	* tests/compile.test:	amount of [exec] usage in the test suite.
-	* tests/encoding.test:
-	* tests/env.test:
-	* tests/event.test:
-	* tests/exec.test:
-	* tests/io.test:
-	* tests/ioCmd.test:
-	* tests/regexp.test:
-	* tests/regexpComp.test:
-	* tests/socket.test:
-	* tests/tcltest.test:
-	* tests/unixInit.test:
-	* tests/winDde.test:
-	* tests/winPipe.test:
+2006-10-20  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-07-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	*** 8.5a5 TAGGED FOR RELEASE ***
 
-	* tests/cmdAH.test: Removed [exec] of Unix utilities. [Bug 579211]
+	* tools/tcltk-man2html.tcl: add support for alpha & beta versions to
+	useversion glob pattern. [Bug 1579941]
 
-	* tests/expr.test: Added tests to make sure that this works.
-	* generic/tclExecute.c (ExprCallMathFunc): Functions should also be
-	able to return wide-ints. [Bug 579284]
+2006-10-18  Don Porter	<dgp@users.sourceforge.net>
 
-2002-07-08  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* changes:		8.5a5 release date set
 
-	* tests/socket.test: Fixed [Bug 578164]. The original reason for the
-	was a DNS outage while running the testsuite. Changed [info hostname]
-	to 127.0.0.1 to bypass DNS, knowing that we operate on the local
-	host.
+	* doc/Encoding.3:	Missing doc updates (mostly Table of
+	* doc/Ensemble.3:	Contents) exposed by `make checkdoc`
+	* doc/FileSystem.3:
+	* doc/GetTime.3:
+	* doc/PkgRequire.3:
 
-2002-07-08  Don Porter  <dgp@users.sourceforge.net>
+2006-10-17  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/tcltest.n:		Fixed incompatibility in [viewFile].
-	* library/tcltest/tcltest.tcl:	Corrected docs. Bumped to 2.2.1.
-	* library/tcltest/pkgIndex.tcl: [Bug 578163]
+	* generic/tclInterp.c (ApplyObjCmd): fixed bad error in 2006-10-12
+	commit: interp released too early. Spotted by mistachkin.
 
-2002-07-08  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-10-16  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/cmdAH.test:
-	* tests/fCmd.test:
-	* tests/fileName.test: tests which rely on 'file link' need a
-	constraint so they don't run on older Windows OS. [Bug 578158]
-	* generic/tclIOUtil.c:
-	* generic/tcl.h:
-	* generic/tclInt.h:
-	* generic/tclTest.c:
-	* mac/tclMacChan.c:
-	* unix/tclUnixChan.c:
-	* win/tclWinChan.c:
-	* doc/FileSystem.3: cleaned up internal handling of
-	Tcl_FSOpenFileChannel to remove duplicate code, and make writing
-	external vfs's clearer and easier. No functionality change. Also
-	clarify that objects with refCount zero should not be passed in to the
-	Tcl_FS API, and prevent segfaults from occuring on such user errors.
-	[Bug 578617]
-
-2002-07-06  Don Porter  <dgp@users.sourceforge.net>
-
-	* tests/pkgMkIndex.test:  Constrained tests of [load] package indexing
-	to those platforms where the testing shared libraries have been built.
-	[Bug 578166].
-
-2002-07-05  Don Porter  <dgp@users.sourceforge.net>
-
-	* changes: added recent changes
-
-2002-07-05  Reinhard Max  <max@suse.de>
-
-	* generic/tclClock.c (FormatClock): Convert the format string to
-	UTF8 before calling TclpStrftime, so that non-ASCII characters don't
-	get mangled when the result string is being converted back.
-	* tests/clock.test: Added a test for that.
-
-2002-07-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* unix/Makefile.in (ro-test,ddd,GDB,DDD): Created new targets to allow
-	running the test suite with a read-only current directory, running
-	under ddd instead of gdb, and factored out some executable names for
-	broken sites (like mine) where gdb and ddd are installed with
-	non-standard names...
-
-	* tests/httpold.test: Altered test names to httpold-* to avoid clashes
-	with http.test, and stopped tests from failing when the current
-	directory is not writable...
-
-	* tests/event.test:		Stop these tests from failing
-	* tests/ioUtil.test:		when the current directory is
-	* tests/regexp.test:		not writable...
-	* tests/regexpComp.test:
-	* tests/source.test:
-	* tests/unixFile.test:
-	* tests/unixNotfy.test:
-
-	* tests/unixFCmd.test:		Trying to make these test-files
-	* tests/macFCmd.test:		not bomb out with an error when
-	* tests/http.test:		the current directory is not
-	* tests/fileName.test:		writable...
-	* tests/env.test:
+	* tclProc.c (SetLambdaFromAny):
+	* tests/apply.test (9.1-9.2): plugged intrep leak [Bug 1578454],
+	found by mjanssen.
 
-2002-07-05  Jeff Hobbs  <jeffh@ActiveState.com>
+2006-10-16  Andreas Kupries  <andreask@activestate.com>
 
-	*** 8.4b1 TAGGED FOR RELEASE ***
+	* generic/tclBasic.c: Moved TIP#219 cleanup to DeleteInterpProc.
 
-2002-07-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-10-16  Daniel Steffen  <das@users.sourceforge.net>
 
-	* tests/cmdMZ.test (cmdMZ-1.4):
-	* tests/cmdAH.test: More fixing of writable-current-dir assumption.
-	[Bug 575824]
+	* changes: updates for 8.5a5 release.
 
-2002-07-04  Miguel Sofer  <msofer@users.sourceforge.net>
+	* unix/tclUnixThrd.c (TclpThreadGetStackSize): Darwin: fix for main
+	thread, where pthread_get_stacksize_np() returns incorrect info.
 
-	* tests/basic.test: Same issue as below; fixed [Bug 575817]
+	* macosx/GNUmakefile: don't redo prebinding of non-prebound binaires.
 
-2002-07-04  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+2006-10-16  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/socket.test:
-	* tests/winPipe.test:
-	* tests/pid.test: Fixed [Bug 575848]. See below for a description the
-	general problem.
+	* generic/tclPkg.c (ExactRequirement):	Plugged memory leak. Also
+	changed Tcl_Alloc()/Tcl_Free() calls to ckalloc()/ckfree() for easier
+	memory debugging in the future. [Bug 1568373]
 
-	All the bugs below are instances of the same problem: The testsuite
-	assumes [pwd] = [temporaryDirectory] and writable.
+	* library/tcltest/tcltest.tcl:	Revise tcltest bump to 2.3a1.
+	* library/tcltest/pkgIndex.tcl: This permits more features to be
+	* unix/Makefile.in:	added to tcltest before we reach version 2.3.0
+	* win/Makefile.in:	best timed to match the release of Tcl 8.5.0.
+	* win/makefile.vc:	This also serves as a demo of TIP 268 features
 
-	* tests/iogt.test: Fixed [Bug 575860]
-	* tests/io.test:   Fixed [Bug 575862]
-	* tests/exec.test:
-	* tests/ioCmd.test: Fixed [Bug 575836]
+2006-10-13  Colin McCormack <coldstore@users.sf.net>
 
-2002-07-03  Don Porter  <dgp@users.sourceforge.net>
+	* win/tclWinFile.c: corrected erroneous attempt to protect against
+	NULL return from Tcl_FSGetNormalizedPath per [Bug 1548263] causing
+	[Bug 1575837].
+	* win/tclWinFile.c: alfredd supplied patch to fix [Bug 1575837]
 
-	* tests/pkg1/direct1.tcl: removed
-	* tests/pkg1/pkgIndex.tcl: removed
-	* tests/pkgMkIndex.test: Imported auxilliary files from tests/pkg1
-	into the test file pkgMkIndex.test itself. Formatting fixes.
+2006-10-13  Daniel Steffen  <das@users.sourceforge.net>
 
-	* unix/Makefile.in: removed tests/pkg/* from `make dist`
+	* unix/tclUnixThrd.c (TclpThreadGetStackSize): on Darwin, use
+	* unix/tcl.m4: pthread_get_stacksize_np() API to get thread stack size
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* tests/pkg/circ1.tcl: removed
-	* tests/pkg/circ2.tcl: removed
-	* tests/pkg/circ3.tcl: removed
-	* tests/pkg/global.tcl: removed
-	* tests/pkg/import.tcl: removed
-	* tests/pkg/pkg1.tcl: removed
-	* tests/pkg/pkg2_a.tcl: removed
-	* tests/pkg/pkg2_b.tcl: removed
-	* tests/pkg/pkg3.tcl: removed
-	* tests/pkg/pkg4.tcl: removed
-	* tests/pkg/pkg5.tcl: removed
-	* tests/pkg/pkga.tcl: removed
-	* tests/pkg/samename.tcl: removed
-	* tests/pkg/simple.tcl: removed
-	* tests/pkg/spacename.tcl: removed
-	* tests/pkg/std.tcl: removed
-	* tests/pkgMkIndex.test: Fixed [Bug 575857] where this test file
-	expected to be able to write to [file join [testsDirectory] pkg]. Part
-	of the fix was to import several auxilliary files into the test file
-	itself.
+2006-10-12  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/main.test:	Cheap fix for [Bugs 575851, 575858]. Avoid
-	* tests/tcltest.test:	non-writable . by [cd [temporaryDirectory]].
+	* generic/tclInterp.c (ApplyObjCmd):
+	* tests/interp.test (interp-14.5-10): made [interp alias] use the
+	ensemble rewrite machinery to produce better error messages [Bug
+	1576006]
 
-	* library/auto.tcl: Fix [tcl_findLibrary] to be sure it sets $varName
-	only if a successful library script is found. [Bug 577033]
+2006-10-12  David Gravereaux <davygrvy@pobox.com>
 
-2002-07-03  Miguel Sofer  <msofer@users.sourceforge.net>
+	* win/nmakehlp.c: Replaced all wnsprintf() calls with snprintf().
+	wnsprintf was not in my shwlapi header file (VC++6)
 
-	* generic/tclCompCmds.c (TclCompileCatchCmd): return
-	TCL_OUT_LINE_COMPILE instead of TCL_ERROR: let the failure happen at
-	runtime so that it can be caught [Bug 577015].
+2006-10-11  Don Porter	<dgp@users.sourceforge.net>
 
-2002-07-02  Joe English  <jenglish@users.sourceforge.net>
+	* generic/tclPkg.c (Tcl_PackageRequireEx):	Corrected crash when
+	argument version=NULL passed in.
 
-	* doc/tcltest.n: Markup fixes, spellcheck.
+2006-10-10  Don Porter	<dgp@users.sourceforge.net>
 
-2002-07-02  Don Porter  <dgp@users.sourceforge.net>
+	* changes:	Updates for 8.5a5 release.
 
-	* doc/tcltest.n: more refinements of the documentation.
+	* generic/tclNamespace.c (TclTeardownNamespace):  After the
+	commandPathSourceList of a namespace is cleared, set the
+	commandPathSourceList to NULL so we don't try to walk the list a
+	second time, possibly after it is freed. [Bug 1566526]
+	* tests/namespace.test (namespace-51.16):	Added test.
 
-	* library/tcltest/tcltest.tcl: Added trace to be sure the stdio
-	constraint is updated whenever the [interpreter] changes.
+2006-10-09  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/tcltest.n:		Reverted [makeFile] and [viewFile] to
-	* library/tcltest/tcltest.tcl:	their former behavior, and documented
-	* tests/cmdAH.test:		it. Corrected misspelling of hook
-	* tests/event.test:		procedure. Restored tests.
-	* tests/http.test:
-	* tests/io.test:
+	* doc/UpVar.3: brough the docs in accordance to the code. Ever since
+	8.0, Tcl_UpVar(2)? accepts TCL_NAMESPACE_ONLY as a flag value, and
+	var-3.4 tests for proper behaviour. The docs only allowed 0 and
+	TCL_GLOBAL_ONLY. [Bug 1574099]
 
-	* library/tcltest/tcltest.tcl: Simplified logic of [GetMatchingFiles]
-	and [GetMatchingDirectories], removing special case processing.
+2006-10-09  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/tcltest.n: More documentation updates. Reference sections are
-	complete. Only examples need adding.
+	* tests/*.test: updated all tests to refer explicitly to the global
+	variables ::errorInfo, ::errorCode, ::env and ::tcl_platform: many
+	were relying on the alternative lookup in the global namespace, that
+	feature is tested specifically in namespace and variable tests.
 
-2002-07-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+	The modified testfiles are: apply.test, basic.test, case.test,
+	cmdIL.test, cmdMZ.test, compExpr-old.test, error.test, eval.test,
+	event.test, expr.test, fileSystem.test, for.test, http.test, if.test,
+	incr-old.test, incr.test, interp.test, io.test, ioCmd.test, load.test,
+	misc.test, namespace.test, parse.test, parseOld.test, pkg.test,
+	proc-old.test, set.test, switch.test, tcltest.test, thread.test,
+	var.test, while-old.test, while.test.
 
-	* tests/fCmd.test:
-	* generic/tclCmdAH.c: clearer error msgs for 'file link', as per the
-	man page.
+2006-10-06  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-2002-07-01  Joe English  <jenglish@users.sourceforge.net>
+	* win/rules.vc: [Bug 1571954] avoid /RTCc flag with MSVC8
 
-	* doc/Access.3:
-	* doc/AddErrInfo.3:
-	* doc/Alloc.3:
-	* doc/Backslash.3:
-	* doc/CrtChannel.3:
-	* doc/CrtSlave.3:
-	* doc/Encoding.3:
-	* doc/Eval.3:
-	* doc/FileSystem.3:
-	* doc/Notifier.3:
-	* doc/OpenFileChnl.3:
-	* doc/ParseCmd.3:
-	* doc/RegExp.3:
-	* doc/Tcl_Main.3:
-	* doc/Thread.3:
-	* doc/TraceCmd.3:
-	* doc/Utf.3:
-	* doc/WrongNumArgs.3:
-	* doc/binary.n:
-	* doc/clock.n:
-	* doc/expr.n:
-	* doc/fconfigure.n:
-	* doc/glob.n:
-	* doc/http.n:
-	* doc/interp.n:
-	* doc/lsearch.n:
-	* doc/lset.n:
-	* doc/msgcat.n:
-	* doc/packagens.n:
-	* doc/pkgMkIndex.n:
-	* doc/registry.n:
-	* doc/resource.n:
-	* doc/safe.n:
-	* doc/scan.n:
-	* doc/tclvars.n:  Spell-check, fixed typos (Updates from Larry Virden)
+2006-10-06  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-2002-07-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* doc/binary.n:	       TIP #275: Support unsigned values in binary
+	* generic/tclBinary.c: command. Tests and documentation updated.
+	* tests/binary.test:
 
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Made Solaris use gcc for linking
-	when building with gcc to resolve problems with undefined symbols
-	being present when tcl library used with non-gcc linker at later
-	stage. Symbols were compiler-generated, so it is the compiler's
-	business to define them. [Bug 541181]
+2006-10-05  Andreas Kupries  <andreask@activestate.com>
 
-2002-07-01  Don Porter  <dgp@users.sourceforge.net>
+	* library/tm.tcl: Fixed bug in TIP #189 implementation, now allowing
+	'_' in module names.
 
-	* doc/tcltest.n: more work in progress updating tcltest docs.
+2006-10-05  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* library/tcltest/tcltest.tcl: Change [configure -match] to stop
-	treating an empty list as a list of the single pattern "*". Changed
-	the default value to [list *] so default operation remains the same.
+	* library/http/http.tcl (http::geturl): only do geturl url rfc 3986
+	validity checking if $::http::strict is true (default true for 8.5).
+	[Bug 1560506]
 
-	* tests/pkg/samename.tcl: restored. Needed by pkgMkIndex.test.
+	* generic/tcl.h: note limitation on changing Tcl_UniChar size
+	* generic/tclEncoding.c (UtfToUnicodeProc, UnicodeToUtfProc):
+	* tests/encoding.test (encoding-16.1): fix alignment issues in
+	unicode <> utf conversion procs. [Bug 1122671]
 
-	* library/tcltest/tcltest.tcl: restored writeability testing of
-	-tmpdir, augmented by a special exception for the deafault value.
+2006-10-05  Miguel Sofer  <msofer@users.sf.net>
 
-2002-07-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclVar.c (Tcl_LappendObjCmd):
+	* tests/append.test(4.21-22): fix for longstanding [Bug 1570718],
+	lappending nothing to non-list. Reported by lvirden
 
-	* doc/concat.n: Documented the *real* behaviour of [concat]!
+2006-10-04  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-06-30  Don Porter  <dgp@users.sourceforge.net>
+	* tzdata/: Olson's tzdata2006m.
 
-	* doc/tcltest.n: more work in progress updating tcltest docs.
+2006-10-01  Kevin B. Kenny  <kennykb@acm.org>
 
-	* tests/README:		Updated the instructions on running and
-	* tests/cmdMZ.test:	adding to the test suite.  Also updated
-	* tests/encoding.test:	several tests, mostly to correctly create
-	* tests/fCmd.test:	and destroy any temporary files in the
-	* tests/info.test:	[temporaryDirectory] of tcltest.
-	* tests/interp.test:
+	* tests/clock.test (clock-49.2): Removed a locale dependency that
+	caused a spurious failure in the German locale. [Bug 1567956]
 
-	* library/tcltest/tcltest.tcl:	Stopped checking for writeability of
-	-tmpdir value because no default directory can be guaranteed to be
-	writeable.
+2006-10-01  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/autoMkindex.tcl: removed.
-	* tests/pkg/samename.tcl: removed.
-	* tests/pkg/magicchar.tcl: removed.
-	* tests/pkg/magicchar2.tcl: removed.
-	* tests/autoMkindex.test: Updated auto_mkIndex tests to use [makeFile]
-	and [removeFile] so tests are done in [temporaryDirecotry] where write
-	access is guaranteed.
+	* doc/Eval.3 (TclEvalObjv): added note on refCount management for the
+	elements of objv. [Bug 730244]
 
-	* library/tcltest/tcltest.tcl:	Fixed [makeFile] and [viewFile] to
-	* tests/cmdAH.test:		accurately reflect a file's contents.
-	* tests/event.test:		Updated tests that depended on buggy
-	* tests/http.test:		behavior.  Also added warning messages
-	* tests/io.test:		to "-debug 1" operations to debug test
-	* tests/iogt.test:		calls to (make|remove)(File|Directory).
+2006-10-01  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* unix/mkLinks: `make mklinks` on 6-27 commits.
+	* win/tclWinFile.c: Handle possible missing define.
 
-2002-06-28  Miguel Sofer  <msofer@users.sourceforge.net>
+	* win/tclWinFile.c (TclpUtime): [Bug 1420432] file mtime fails for
+	* tests/cmdAH.test:		directories on windows
 
-	* generic/tclCompile.h: modified the macro TclEmitPush to not call its
-	first argument repeatedly or pass it to other macros, [Bug 575194]
-	reported by Peter Spjuth.
+	* tests/winFile.test: Handle Msys environment a little differently in
+	getuser function. [Bug 1567956]
 
-2002-06-28  Don Porter  <dgp@users.sourceforge.net>
+2006-09-30  Miguel Sofer  <msofer@users.sf.net>
 
-	* docs/tcltest.n:	Doc revisions in progress.
-	* library/tcltest/tcltest.tcl: Corrected -testdir default value. Was
-	not reliable, and disagreed with docs! Thanks to Hemang Lavana. [Bug
-	575150]
+	* generic/tclUtil.c (Tcl_SplitList): optimisation, [Patch 1344747] by
+	dgp.
 
-2002-06-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclObj.c:
+	* generic/tclStubInit.c: added an internal function TclObjBeingDeleted
+	to provide info as to the reason for the loss of an internal rep. [FR
+	1512138]
 
-	* unix/tclUnixThrd.c:	Renamed the Tcl_Platform* #defines to
-	* unix/tclUnixPipe.c:	TclOS* because they are only used
-	* unix/tclUnixFile.c:	internally.  Also stopped double-#def
-	* unix/tclUnixFCmd.c:	of TclOSlstat [Bug 566099, post-rename]
-	* unix/tclUnixChan.c:
-	* unix/tclUnixPort.h:
+	* generic/tclCompile.c:
+	* generic/tclHistory.c:
+	* generic/tclInt.h:
+	* generic/tclProc.c: made Tcl_RecordAndEvalObj not call "history" if
+	it has been redefined to an empty proc, in order to reduce the noise
+	when debugging [FR 1190441]. Moved TclCompileNoOp from tclProc.c to
+	tclCompile.c
 
-	* doc/string.n: Improved documentation for [string last] along lines
-	described in [Bug 574799] so it indicates that the supplied index
-	marks the end of the search space.
+2006-09-28  Andreas Kupries  <andreask@activestate.com>
 
-2002-06-27  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclPkg.c (CompareVersions): Bugfix. Check string lengths
+	* tests/pkg.test: before comparison. The shorter string is the smaller
+	number. Added testcases as well. Interestingly all existing test cases
+	for vcompare compared numbers of the same length with each other. [Bug
+	1563836]
 
-	* doc/dde.n:		Work in progress updating the documentation
-	* doc/http.n:		of the packages that come bundled with
-	* doc/msgcat.n:		the Tcl source distribution, notably tcltest.
-	* doc/registry.n:
-	* doc/tcltest.n:
+2006-09-28  Miguel Sofer  <msofer@users.sf.net>
 
-	* library/tcltest/tcltest.tcl:	Made sure that the TCLTEST_OPTIONS
-	environment variablle configures tcltest at package load time.
+	* generic/tclIO.c (Tcl_GetsObj): added two test'n'panic guards for
+	possible NULL derefs, [Bug 1566382] and coverity #33.
 
-2002-06-26  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-09-27  Don Porter	<dgp@users.sourceforge.net>
 
-	* tests/fileSystem.test:
-	* generic/tclIOUtil.c: fix to handling of empty paths "" which are not
-	claimed by any filesystem [Bug 573758]. Ensure good error messages are
-	given in all cases.
-	* tests/cmdAH.test:
-	* unix/tclUnixFCmd.c: fix to bug reported as part of [Patch 566669].
-	Thanks to Taguchi, Takeshi for the report.
+	* generic/tclExecute.c: Corrected error in INST_LSHIFT in the
+	* tests/expr.test:	calculation done to determine whether a shift
+	in the (long int) type is possible. The calculation had literal value
+	"1" where it needed a value "1L" to compute the correct result. Error
+	detected via testing with the math::bigfloat package [Bug 1567222]
 
-2002-06-26  Reinhard Max  <max@suse.de>
+	* generic/tclPkg.c (CompareVersion):	Flatten strcmp() results to
+	{-1, 0, 1} to match expectations of CompareVersion() callers.
 
-	* unix/tclUnixTime.c: Make [clock format] respect locale settings.
-	* tests/clock.test:   [Bug 565880]. ***POTENTIAL INCOMPATIBILITY***
+2006-09-27  Miguel Sofer  <msofer@users.sf.net>
 
-2002-06-26  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/regc_color.c (singleton):
+	* generic/regc_cvec.c (addmcce):
+	* generic/regcomp.c (compile, dovec): the static function addmcce does
+	nothing when called with two NULL pointers; the only call is by
+	compile with two NULL pointers (regcomp.c #includes regc_cvec.c).
+	Large parts (all?) the code for mcce (multi character collating
+	element) that we do not use is ifdef'ed out with the macro
+	REGEXP_MCCE_ENABLE.
+	This silences coverity bugs 7, 16, 80
 
-	* doc/CrtInterp.3:
-	* doc/StringObj.3: clarifications by Don Porter, [Bugs 493995, 500930]
+	* generic/regc_color.c (uncolorchain):
+	* generic/regc_nfa.c (freearc): changed tests and asserts to
+	equivalent formulation, designed to avoid an explicit comparison to
+	NULL and satisfy coverity that 6 and 9 are not bugs.
 
-2002-06-24  Don Porter  <dgp@users.sourceforge.net>
+2006-09-27  Andreas Kupries  <andreask@activestate.com>
 
-	* library/tcltest/tcltest.tcl:	Corrected suppression of -verbose skip
-	* tests/tcltest.test:		and start by [test -output]. Also
-	corrected test suite errors exposed by corrected code. [Bug 564656]
+	* tests/pkg.test: Added test for version comparison at the 32bit
+	boundary. [Bug 1563836]
 
-2002-06-25  Reinhard Max  <max@suse.de>
+	* generic/tclPkg.c: Rewrote CompareVersion to perform string
+	comparison instead of numeric. This breaks through the 32bit limit on
+	version numbers. See code for details (handling of leading zeros,
+	signs, etc.). un-CONSTed some arguments of CompareVersions,
+	RequirementSatisfied, and AllRequirementsSatisfied. The new compare
+	modifies the string (temporary string terminators). All callers use
+	heap-allocated ver-intreps, so we are good with that. [Bug 1563836]
 
-	* unix/tcl.m4:	     New macro SC_CONFIG_MANPAGES.
-	* unix/configure.in: Added support for symlinks and compression
-	* unix/Makefile.in:  when installing the manpages. [Patch 518052]
-	* unix/mkLinks.tcl:  Default is still hardlinks and no compression.
+2006-09-27  Miguel Sofer  <msofer@users.sf.net>
 
-	* unix/mkLinks:	     generated
-	* unix/configure:
+	* generic/tclFileName.c (TclGlob): added a panic for a call with
+	TCL_GLOBMODE_TAILS and pathPrefix==NULL. This would cause a segfault,
+	as found by coverity #26.
 
-	* unix/README:	     Added documentation for the new features.
+2006-09-26  Kevin B. Kenny  <kennykb@acm.org>
 
-	* unix/tcl.m4 (SC_PATH_TCLCONFIG): Replaced ${exec_prefix}/lib by
-	${libdir}.
+	* doc/Encoding.3:	 Added covariant 'const' qualifier for the
+	* generic/tcl.decls:	 Tcl_EncodingType argument to
+	* generic/tclEncoding.c: Tcl_CreateEncoding. [Further TIP#27 work.]
+	* generic/tclDecls.h:	 Reran 'make genstubs'.
 
-2002-06-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-09-26  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* generic/tclUtil.c (TclGetIntForIndex): Fix of critical [Bug 533364]
-	generated when the index is bad and the result is a shared object. The
-	T_ASTO(T_GOR, ...) idiom likely exists elsewhere though. Also removed
-	some cruft that just complicated things to no advantage.
-	(SetEndOffsetFromAny): Same fix, though this wasn't on the path
-	excited by the bug.
+	* win/makefile.vc:  Additional compiler flags and amd64 support.
+	* win/nmakehlp.c:
+	* win/rules.vc:
 
-2002-06-24  Don Porter  <dgp@users.sourceforge.net>
+2006-09-26  Don Porter	<dgp@users.sourceforge.net>
 
-	* library/tcltest/tcltest.tcl:	Implementation of TIP 101.  Adds
-	* tests/parseOld.test:		and exports a [configure] command
-	* tests/tcltest.test:		from tcltest.
+	* generic/tcl.h:	As 2006-09-22 commit from Donal K. Fellows
+	demonstrates, "#define NULL 0" is just wrong, and as a quotable chat
+	figure observed, "If NULL isn't defined, we're not using a C compiler"
+	Improper fallback definition of NULL removed.
 
-2002-06-22  Don Porter  <dgp@users.sourceforge.net>
+2006-09-25  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* changes: updated changes file for 8.4b1 release.
+	* generic/tcl.h:	More fixing which struct stat to refer to.
+	* generic/tclGetDate.y: Some casts from time_t to int required.
+	* generic/tclTimer.c:	Tcl_Time structure members are longs.
+	* win/makefile.vc:	Support for varying compiler options
+	* win/rules.vc:		and build to platform-specific subdirs.
 
-	* library/tcltest/tcltest.tcl:	Corrections to tcltest and the
-	* tests/basic.test:		Tcl test suite so that a test
-	* tests/cmdInfo.test:		with options -constraints knownBug
-	* tests/compile.test:		-limitConstraints 1 only tests the
-	* tests/encoding.test:		knownBug tests. Mostly involves
-	* tests/env.test:		replacing direct access to the
-	* tests/event.test:		testConstraints array with calls
-	* tests/exec.test:		to the testConstraint command
-	* tests/execute.test:		(which requires tcltest version 2)
-	* tests/fCmd.test:
-	* tests/format.test:
-	* tests/http.test:
-	* tests/httpold.test:
-	* tests/ioUtil.test:
-	* tests/link.test:
-	* tests/load.test:
-	* tests/namespace.test:
-	* tests/pkgMkIndex.test:
-	* tests/reg.test:
-	* tests/result.test:
-	* tests/scan.test:
-	* tests/stack.test:
+2006-09-25  Andreas Kupries  <andreask@activestate.com>
 
-2002-06-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclIO.c (Tcl_StackChannel): Fixed [Bug 1564642], aka
+	coverity #51. Extended loop condition, added checking for NULL to
+	prevent seg.fault.
 
-	* tools/tcl.wse.in (Disk Label), unix/tcl.spec (version):
-	* win/README.binary, README, win/configure.in, unix/configure.in:
-	* generic/tcl.h (TCL_RELEASE_*, TCL_PATCH_LEVEL): Bump to beta1.
+2006-09-25  Andreas Kupries  <andreask@activestate.com>
 
-2002-06-21  Joe English  <jenglish@users.sourceforge.net>
+	* doc/package.n: Fixed nits reported by Daniel Steffen in the TIP#268
+	changes.
 
-	* generic/tclCompExpr.c:
-	* generic/tclParseExpr.c: LogSyntaxError() should reset the
-	interpreter result [Bug 550142 "Tcl_ExprObj -> abort"]
+2006-09-25  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-06-21  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclNotify.c (Tcl_DeleteEvents): Simplified the code in hopes
+	of making the invariants clearer and proving to Coverity that the
+	event queue memory is managed correctly.
 
-	* unix/Makefile.in:	Updated all package install directories to
-	* win/Makefile.in:	match current Major.minor versions of the
-	* win/makefile.bc:	packages. Added tcltest package to
-	* win/makefile.vc:	installation on Windows.
+2006-09-25  Donal K. Fellows  <dkf@users.sf.net>
 
-	* library/init.tcl:  Corrected comments and namespace style issues.
-	Thanks to Bruce Stephens. [Bug 572025]
+	* generic/tclNotify.c (Tcl_DeleteEvents): Make it clear what happens
+	when the event queue is mismanaged. [Bug 1564677], coverity bug #10.
 
-2002-06-21  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-09-24  Miguel Sofer  <msofer@users.sf.net>
 
-	* tests/cmdAH.test:	     Added TIP#99 implementation of 'file
-	* tests/fCmd.test:	     link'. Supports creation of symbolic and
-	* tests/fileName.test:	     hard links in the native filesystems and
-	* tests/fileSystem.test:     in vfs's, when the individual filesystem
-	* generic/tclTest.c:	     supports the concept.
-	* generic/tclCmdAH.c:
-	* generic/tclIOUtil.c:
-	* generic/tcl.h:
-	* generic/tcl.decls:
-	* doc/FileSystem.3:
-	* doc/file.n:
-	* mac/tclMacFile.c:
-	* unix/tclUnixFile.c:
-	* win/tclWinFile.c: Also enhanced speed of 'file normalize' on Windows
+	* generic/tclParse.c (Tcl_ParseCommand): also return an error if
+	start==NULL and numBytes<0. This is coverity's bug #20
 
-2002-06-20  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclStringObj.c (STRING_SIZE): fix allocation for 0-length
+	strings. This is coverity's bugs #54-5
 
-	* generic/tclBasic.c (TclEvalObjvInternal): fix for [Bug 571385] in
-	the implementation of TIP#62 (command tracing). Vince Darley, Hemang
-	Lavana & Don Porter: thanks.
+2006-09-22  Andreas Kupries  <andreask@activestate.com>
 
-2002-06-20  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclInt.h: Moved TIP#268's field 'packagePrefer' to the end
+	of the structure, for better backward compatibility.
 
-	* generic/tclExecute.c (TclCompEvalObj): clarified and simplified the
-	logic for compilation/recompilation.
+2006-09-22  Andreas Kupries  <andreask@activestate.com>
 
-2002-06-19  Joe English  <jenglish@users.sourceforge.net>
+	TIP#268 IMPLEMENTATION
 
-	* doc/file.n: Fixed indentation.  No substantive changes.
+	* generic/tclDecls.h:	 Regenerated from tcl.decls.
+	* generic/tclStubInit.c:
 
-2002-06-19  Jeff Hobbs  <jeffh@ActiveState.com>
+	* doc/PkgRequire.3: Documentation of extended API, extended testsuite.
+	* doc/package.n:
+	* tests/pkg.test:
 
-	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): get the resultPtr again as
-	the Tcl_ObjSetVar2 may cause the result to change.
-	[Patch 558324] (watson)
+	* generic/tcl.decls: Implementation.
+	* generic/tclBasic.c:
+	* generic/tclConfig.c:
+	* generic/tclInt.h:
+	* generic/tclPkg.c:
+	* generic/tclTest.c:
+	* generic/tclTomMathInterface.c:
+	* library/init.tcl:
+	* library/package.tcl:
+	* library/tm.tcl:
 
-2002-06-19  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-22  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
-	* generic/tclExecute.c (TEBC): removing unused "for(;;)" loop;
-	improved comments; re-indentation.
+	* generic/tclThreadTest.c (TclCreateThread): Use NULL instead of 0 as
+	end-of-strings marker to Tcl_AppendResult; the difference matters on
+	64-bit machines. [Bug 1562528]
 
-2002-06-18  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-21  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclExecute.c (TEBC):
-	- elimination of duplicated code in the non-immediate INST_INCR
-	  instructions.
-	- elimination of 103 (!) TclDecrRefCount macros. The different
-	  instructions now jump back to a common "DecrRefCount zone" at the
-	  top of the loop. The macro "ADJUST_PC" was replaced by two macros
-	  "NEXT_INST_F" and "NEXT_INST_V" that take three params
-	  (pcAdjustment, # of stack objects to discard, resultObjPtr handling
-	  flag). The only instructions that retain a TclDecrRefCount are
-	  INST_POP (for speed), the common code for the non-immediate
-	  INST_INCR, INST_FOREACH_STEP and the two INST_LSET.
+	* generic/tclUtil.c:	Dropped ParseInteger() routine. TclParseNumber
+	covers the task just fine.
 
-	The object size of tclExecute.o was reduced by approx 20% since the
-	start of the consolidation drive, while making room for some peep-hole
-	optimisation at runtime.
+2006-09-19  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-06-18  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclEvent.c (Tcl_VwaitObjCmd): Rewrite so that an exceeded
+	limit trapped in a vwait cannot cause a dangerous dangling trace.
 
-	* generic/tclExecute.c (TEBC, INST_DONE): small bug in the panic code
-	for tcl-stack corruption.
+2006-09-19  Don Porter	<dgp@users.sourceforge.net>
 
-2002-06-17  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclExecute.c (INST_EXPON):	Native type overflow detection
+	* tests/expr.test:	was completely broken. Falling back on use of
+	bignums for all non-trivial ** calculations until
+	native-type-constrained special cases can be done carefully and
+	correctly. [Bug 1561260]
 
-	Trims to support the removal of RESOURCE_INCLUDED from rc scripts from
-	[FRQ 565088].
+2006-09-15  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tcl.h: moved the #ifndef RC_INVOKED start block up in the
-	file. rc scripts don't need to know thread mutexes.
+	* library/http/http.tcl:      Change " " -> "+" url encoding mapping
+	* library/http/pkgIndex.tcl:  to " " -> "%20" as per RFC 3986.
+	* tests/http.test (http-5.1): bump http to 2.5.3
+	* unix/Makefile.in:
+	* win/Makefile.in:
 
-	* win/tcl.rc:
-	* win/tclsh.rc: removed the #define RESOURCE_INCLUDED to let the
-	built-in -DRC_INVOKED to the work.
+2006-09-12  Andreas Kupries  <andreask@activestate.com>
 
-2002-06-17  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/configure.in (HAVE_MTSAFE_GETHOST*): Modified to recognize
+	HP-UX 11.00 and beyond as having mt-safe implementations of the
+	gethost functions.
+	* unix/configure: Regenerated, using autoconf 2.59
 
-	* doc/CrtTrace.3:	 Added TIP#62 implementation of command
-	* doc/trace.n:		 execution tracing [FRQ 462580] (lavana).
-	* generic/tcl.h:	 This includes enter/leave tracing as well
-	* generic/tclBasic.c:	 as inter-procedure stepping.
-	* generic/tclCmdMZ.c:
-	* generic/tclCompile.c:
-	* generic/tclExecute.c:
-	* generic/tclInt.decls:
-	* generic/tclInt.h:
-	* generic/tclIntDecls.h:
-	* generic/tclStubInit.c:
-	* generic/tclVar.c:
-	* tests/trace.test:
+	* unix/tclUnixCompat.c (PadBuffer): Fixed bug in calculation of the
+	increment needed to align the pointer, and added documentation
+	explaining why the macro is implemented as it is.
 
-2002-06-17  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+2006-09-11  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* win/tclWinPipe.c (BuildCommandLine): Fixed [bug 554068] ([exec] on
-	windows did not treat { in filenames well.). Bug reported by Vince
-	Darley <vincentdarley@users.sourceforge.net>, patch provided by Vince
-	too.
+	* win/rules.vc:	   Updated to install http, tcltest and msgcat as
+	* win/makefile.vc: Tcl Modules (as per Makefile.in).
+	* win/makefile.vc: Added tommath_(super)class headers.
 
-2002-06-17  Joe English  <jenglish@users.sourceforge.net>
+2006-09-11  Andreas Kupries  <andreask@activestate.com>
 
-	* generic/tcl.h: #ifdef logic for K&R C backwards compatibility
-	changed to assume modern C by default. See [FRQ 565088] for full
-	details.
+	* unix/Makefile.in (install-libraries): Fixed typo tcltest 2.3.9 ->
+	2.3.0.
 
-2002-06-17  Don Porter  <dgp@users.sourceforge.net>
+2006-09-11  Daniel Steffen  <das@users.sourceforge.net>
 
-	* doc/msgcat.n: Corrected en_UK references to en_GB. UK is not a
-	country designation recognized in ISO 3166.
+	* unix/tclUnixCompat.c: make compatLock static and only declare it
+	when it will actually be used; #ifdef parts of TSD that are not always
+	needed; adjust #ifdefs to cover all possible cases; fix whitespace.
 
-	* library/msgcat/msgcat.tcl:  More Windows Registry locale codes from
-	Bruno Haible.
+2006-09-11  Andreas Kupries  <andreask@activestate.com>
 
+	* tests/msgcat.test: Bumped version in auxiliary files as well.
 	* doc/msgcat.n:
-	* library/msgcat/msgcat.tcl:
-	* library/msgcat/pkgIndex.tcl:
-	* tests/msgcat.test:  Revised locale initialization to interpret
-	environment variable locale values according to XPG4, and to recognize
-	the LC_ALL and LC_MESSAGES values over that of LANG. Also added many
-	Windows Registry locale values to those recognized by msgcat. Revised
-	tests and docs. Bumped to version 1.3. Thanks to Bruno Haible for the
-	report and assistance crafting the solution. [Bug 525522, 525525]
-
-2002-06-16  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclCompile.c (TclCompileTokens): a better algorithm for the
-	previous bug fix.
 
-2002-06-16  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-11  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclCompile.c (TclCompileTokens):
-	* tests/compile.test: [Bug 569438] in the processing of dollar
-	variables; report by Georgios Petasis.
+	* unix/Makefile.in:	Bumped msgcat version to 1.4.2 to be
+	* win/Makefile.in:	consistent with dgp's commits of 2006-09-10.
 
-2002-06-16  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-11  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclExecute.c: bug in the consolidation of the INCR_..._STK
-	instructions; the bug could not be exercised as the (faulty)
-	instruction INST_INCR_ARRAY_STK was never compiled-in (related to [Bug
-	569438]).
+	* library/msgcat/msgcat.tcl:	Removed some unneeded [uplevel]s.
 
-2002-06-14  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-10  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclExecute.c (TclExecuteByteCode): runtime peep-hole
-	optimisation of variables (INST_STORE, INST_INCR) and commands
-	(INST_INVOKE); faster check for the existence of a catch.
-	(TclExecuteByteCode): runtime peep-hole optimisation of comparisons.
-	(TclExecuteByteCode): runtime peep-hole optimisation of INST_FOREACH -
-	relies on peculiarities of the code produced by the bytecode compiler.
+	* generic/tclExecute.c:		Corrected INST_EXPON flaw that treated
+	* tests/expr.test:		$x**1 as $x**3. [Bug 1555371]
 
-2002-06-14  David Gravereaux <davygrvy@pobox.com>
-
-	* win/rules.vc: The test for compiler optimizations was in error.
-	Thanks goes to Roy Terry <royterry@earthlink.net> for his assistance
-	with this.
-
-2002-06-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* doc/trace.n, tests/trace.test:
-	* generic/tclCmdMZ.c (Tcl_TraceObjCmd,TclTraceCommandObjCmd)
-	(TclTraceVariableObjCmd): Changed references to "trace list" to "trace
-	info" as mandated by TIP#102.
-
-2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclExecute.c (TclExecuteByteCode): consolidated code for the
-	conditional branch instructions.
-
-2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclExecute.c (TclExecuteByteCode): fixed the previous
-	patch - wouldn't compile with TCL_COMPILE_DEBUG set.
-
-2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclExecute.c (TclExecuteByteCode): consolidated the handling
-	of exception returns to INST_INVOKE and INST_EVAL, as well as most of
-	the code for INST_CONTINUE and INST_BREAK, in the new jump target
-	"processExceptionReturn".
+	* doc/tcltest.n:		Bump to version tcltest 2.3.0 to
+	* library/tcltest/pkgIndex.tcl: account for new "-verbose line"
+	* library/tcltest/tcltest.tcl:	feature.
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/makefile.bc:
+	* win/makefile.vc:
 
-2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
+	* library/msgcat/msgcat.tcl:	Bump to version msgcat 1.4.2 to
+	* library/msgcat/pkgIndex.tcl:	account for modifications.
 
-	* generic/tclExecute.c (TclExecuteByteCode): consolidated variable
-	handling opcodes, replaced redundant code with some 'goto'. All
-	store/append/lappend opcodes on the same data type now share the main
-	code; same with incr opcodes.
-	* generic/tclVar.c: added the bit TCL_TRACE_READS to the possible
-	flags to Tcl_SetVar2Ex - it causes read traces to be fired prior to
-	setting the variable. This is used in the core for [lappend].
+2006-09-10  Daniel Steffen  <das@users.sourceforge.net>
 
-	***NOTE*** the usage of TCL_TRACE_READS in Tcl_(Obj)?GetVar.* is not
-	documented; there, it causes the call to create the variable if it
-	does not exist. The new usage in Tcl_(Obj)?SetVar.* remains
-	undocumented too ...
+	* library/msgcat/msgcat.tcl (msgcat::Init): on Darwin, add fallback of
+	* tests/msgcat.test:			    default msgcat locale to
+	* unix/tclUnixInit.c (TclpSetVariables):    current CFLocale
+	identifier if available (via private ::tcl::mac::locale global, set at
+	interp init when on Mac OS X 10.3 or later with CoreFoundation).
 
-2002-06-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* library/tcltest/tcltest.tcl: add 'line' verbose level: prints source
+	* doc/tcltest.n:	       file line information of failing tests.
 
-	* tests/fCmd.test:
-	* tests/winFile.test:
-	* tests/fileSystem.test:
-	* generic/tclTest.c:
-	* generic/tclCmdAH.c:
-	* generic/tclIOUtil.c:
-	* doc/FileSystem.3:
-	* mac/tclMacFile.c:
-	* unix/tclUnixFile.c:
-	* win/tclWinFile.c: fixed up further so both compiles and actually
-	works with VC++ 5 or 6.
-	* win/tclWinInt.h:
-	* win/tclWin32Dll.c: cleaned up code and vfs tests and added tests for
-	the internal changes of 2002-06-12, to see whether WinTcl on NTFS can
-	coexist peacefully with links in the filesystem. Added new test
-	command 'testfilelink' to enable the newer code to be tested.
-	* tests/fCmd.test: (made certain tests of 'testfilelink' not run on
-	unix).
+	* macosx/Tcl.xcodeproj/project.pbxproj: add new tclUnixCompat.c file;
+	revise tests target to use new tcltest 'line' verbose level.
 
-2002-06-12  Miguel Sofer  <msofer@users.sourceforge.net>
+	* unix/configure.in: add descriptions to new AC_DEFINEs for MT-safe.
+	* unix/tcl.m4: add caching to new SC_TCL_* macros for MT-safe wrappers
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* tclBasic.c (Tcl_DeleteTrace): fixed [Bug 568123] (thanks to
-	Hemang Lavana)
+2006-09-08  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-2002-06-12  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/tclUnixCompat.c: Added fallback to gethostbyname() and
+	gethostbyaddr() if the implementation is known to be MT-safe
+	(currently for Darwin 6 or later only).
 
-	* win/tclWinFile.c: corrected the symbolic link handling code to
-	allow it to compile. Added real definition of REPARSE_DATA_BUFFER
-	(found in winnt.h). Most of the added definitions appear to have
-	correct, cross-Win-version equivalents in winnt.h and should be
-	removed, but just making things "work" for now.
+	* unix/configure.in: Assume gethostbyname() and gethostbyaddr() are
+	MT-safe starting with Darwin 6 (Mac OSX 10.2).
 
-2002-06-12  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* unix/configure: Regenerated with autoconf V2.59
 
-	* generic/tclIOUtil.c:
-	* generic/tcl.decls:
-	* generic/tclDecls.h: made code for Tcl_FSNewNativePath agree with man
-	pages.
+2006-09-08  Andreas Kupries  <andreask@activestate.com>
 
-	* doc/FileSystem.3: clarified the circumstances under which certain
-	functions are called in the presence of symlinks.
+	* unix/tclUnixCompat.c: Fixed conditions for CopyArray/CopyString, and
+	CopyHostent. Also fixed bad var names in TclpGetHostByName.
 
-	* win/tclWinFile.c:
-	* win/tclWinPort.h:
-	* win/tclWinInt.h:
-	* win/tclWinFCmd.c:  Fix for Windows to allow 'file lstat', 'file
-	type', 'glob -type l', 'file copy', 'file delete', 'file normalize',
-	and all VFS code to work correctly in the presence of symlinks
-	(previously Tcl's behaviour was not very well defined). This also
-	fixes possible serious problems in all versions of WinTcl where 'file
-	delete' on a NTFS symlink could delete the original, not the symlink.
-	Note: symlinks cannot yet be created in pure Tcl.
+2006-09-07  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-2002-06-11  Miguel Sofer  <msofer@users.sourceforge.net>
+	* unix/tclUnixCompat.c: Added fallback to MT-unsafe library calls if
+	TCL_THREADS is not defined.
+	Fixed alignment of arrays copied by CopyArray() to be on the
+	sizeof(char *) boundary.
 
-	* generic/tclBasic.c:
-	* generic/tclCompCmds.c:
-	* generic/tclInt.h: reverted the new compilation functions; replaced
-	by a more general approach described below.
+2006-09-07  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* generic/tclCompCmds.c:
-	* generic/tclCompile.c: made *all* compiled variable access attempts
-	create an indexed variable - even get or incr without previous set.
-	This allows indexed access to local variables that are created and set
-	at runtime, for example by [global], [upvar], [variable], [regexp],
-	[regsub].
+	* unix/tclUnixChan.c:	Rewritten MT-safe wrappers to return ptrs to
+	* unix/tclUnixCompat.c: TSD storage making them all look like their
+	* unix/tclUnixFCmd.c:	MT-unsafe pendants API-wise.
+	* unix/tclUnixPort.h:
+	* unix/tclUnixSock.c:
 
-2002-06-11  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-06  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* doc/global.n:
-	* doc/info.n:
-	* test/info.test:
-	* generic/tclCmdIL.c: fix for [Bug 567386], [info locals] was
-	reporting some linked variables.
+	* unix/tclUnixChan.c: Added TCL_THREADS ifdef'ed usage of MT-safe
+	* unix/tclUnixFCmd.c: calls like: getpwuid, getpwnam, getgrgid,
+	* unix/tclUnixSock.c: getgrnam, gethostbyname and gethostbyaddr.
+	* unix/tclUnixPort.h: See [Bug 999544]
+	* unix/Makefile.in:
+	* unix/configure.in:
+	* unix/tcl.m4:
+	* unix/configure: Regenerated.
 
-	* generic/tclBasic.c:
-	* generic/tclCompCmds.c:
-	* generic/tclInt.h: added compile functions for [global], [variable]
-	and [upvar]. They just declare the new local variables, the commands
-	themselves are not compiled-in. This gives a notably faster read
-	access to these linked variables.
+	* unix/tclUnixCompat.c: New file containing MT-safe implementation of
+	some library calls.
 
-2002-06-11  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-09-04  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclExecute.c: optimised algorithm for exception range
-	lookup; part of [Patch 453709].
+	* generic/tclCompExpr.c:	Removed much complexity that is no
+	longer needed.
 
-2002-06-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* tests/main.text (Tcl_Main-4.4):	Test corrected to not be
+	timing sensitive to the Bug 1481986 fix. [Bug 1550858]
 
-	* unix/tclUnixFCmd.c: fixed [Bug 566669]
-	* generic/tclIOUtil.c: improved and sped up handling of native paths
-	(duplication and conversion to normalized paths), particularly on
-	Windows.
-	* modified part of above commit, due to problems on Linux. Will
-	re-examine bug report and evaluate more closely.
+2006-09-04  Jeff Hobbs	<jeffh@ActiveState.com>
 
-2002-06-07  Don Porter  <dgp@users.sourceforge.net>
+	* doc/package.n: correct package example
 
-	* tests/tcltest.test:  More corrections to test suite so that tests of
-	failing [test]s don't show up themselves as failing tests.
+2006-08-31  Don Porter	<dgp@users.sourceforge.net>
 
-2002-06-07  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclCompExpr.c:	Corrected flawed logic for disabling
+	the INST_TRY_CVT_TO_NUMERIC instruction at the end of an expression
+	when function arguments contain operators. [Bug 1541274]
 
-	* generic/tclExecute.c: Tidied up headers in relation to float.h to
-	cut the cruft and ensure DBL_MAX is defined since doubles seem to be
-	the same size everywhere; if the assumption isn't true, the variant
-	platforms had better have run configure...
+	* tests/expr-old.test:	The remaining failing tests reported in
+	* tests/expr.test:	[Bug 1381715] are all new in Tcl 8.5, so
+	there's really no issue of compatibility with Tcl 8.4 result to deal
+	with. Fixed by updating tests to expect 8.5 results.
 
-	* unix/tclUnixPort.h (EOVERFLOW): Added code to define it if it wasn't
-	previously defined. Also some other general tidying and adding of
-	comments. [Bugs 563122, 564595]
-	* compat/tclErrno.h: Added definition for EOVERFLOW copied from
-	Solaris headers; I've been unable to find any uses of EFTYPE, which
-	was the error code previously occupying the slot, in Tcl, or any
-	definition of it in the Solaris headers.
+2006-08-29  Don Porter	<dgp@users.sourceforge.net>
 
-2002-06-06  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclParseExpr.c:	Dropped the old expr parser.
 
-	* unix/dltest/Makefile.in: Remove hard coded CFLAGS=-g and add
-	CFLAGS_DEBUG, CFLAGS_OPTIMIZE, and CFLAGS_DEFAULT varaibles. [Bug
-	565488]
+2006-08-30  Jeff Hobbs	<jeffh@ActiveState.com>
 
-2002-06-06  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclBasic.c (Tcl_CreateInterp): init iPtr->threadId
 
-	* tests/tcltest.test:  Corrections to test suite so that tests of
-	failing [test]s don't show up themselves as failing tests.
+	* win/tclWinChan.c [Bug 819667] Improve logic for identifying COM
+	ports.
 
-	* tests/io.test: Fixed up namespace variable resolution issues
-	revealed by running test suite with "-singleproc 1".
+	* generic/tclIOGT.c (ExecuteCallback):
+	* generic/tclPkg.c (Tcl_PkgRequireEx): replace Tcl_GlobalEval(Obj)
+	with more efficient Tcl_Eval(Obj)Ex
 
-	* doc/tcltest.n:
-	* library/tcltest/tcltest.tcl:
-	* tests/tcltest.test: Several updates to tcltest.
-	  1) changed to lazy initialization of test constraints
-	  2) deprecated [initConstraintsHook]
-	  3) repaired badly broken [limitConstraints].
-	  4) deprecated [threadReap] and [mainThread]
-	[Patch 512214, Bug 558742, Bug 461000, Bug 534903]
+	* unix/Makefile.in (valgrindshell): add valgrindshell target and
+	update default VALGRINDARGS. User can override, or add to it with
+	VALGRIND_OPTS env var.
 
-2002-06-06  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclFileName.c (DoGlob): match incrs with decrs.
 
-	* unix/tclUnixThrd.c (TclpReaddir, TclpLocaltime, TclpGmtime):
-	added mutex wrapped calls to readdir, localtime & gmtime in case their
-	thread-safe *_r counterparts are not available.
-	* unix/tcl.m4: added configure check for readdir_r
-	* unix/tcl.m4 (Darwin): set TCL_DEFAULT_ENCODING to utf-8 on MacOSX
-	(where posix file apis expect utf-8, not iso8859-1).
-	* unix/configure: regen
-	* unix/Makefile.in: set DYLD_LIBRARY_PATH in parallel to
-	LD_LIBRARY_PATH for MacOSX dynamic linker.
-	* generic/tclEnv.c (TclSetEnv): fix env var setting on MacOSX. Adapted
-	from [Patch 524352] (jkbonfield).
+2006-08-29  Don Porter	<dgp@users.sourceforge.net>
 
-2002-06-05  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclParseExpr.c:	Use the "parent" field of orphan
+	ExprNodes to store the closure of left pointers. This lets us avoid
+	repeated re-scanning leftward for the left boundary of subexpressions,
+	which in worst case led to near O(N^2) runtime.
 
-	* doc/Tcl_Main.3: Documented $tcl_rcFileName and added more
-	clarifications about the intended use of Tcl_Main(). [Bug 505651]
+2006-08-29  Joe Mistachkin  <joe@mistachkin.com>
 
-2002-06-05  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tclUnixInit.c: Fixed the issue (typo) that was causing
+	* unix/tclUnixThrd.c (TclpThreadGetStackSize): stack.test to fail on
+	FreeBSD (and possibly other Unix platforms).
 
-	* generic/tclFileName.c (TclGlob): mac specific fix to recent changes
-	in 'glob -tails' handling.
-	* mac/tclMacPort.h:
-	* mac/tclMacChan.c: fixed TIP#91 bustage.
-	* mac/tclMacResource.c (Tcl_MacConvertTextResource): added utf
-	conversion of text resource contents.
-	* tests/macFCmd.test (macFCmd-1.2): allow CWIE creator.
+2006-08-29  Colin McCormack  <coldstore@users.sourceforge.net>
 
-2002-06-04  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclIOUtil.c:	Added test for NULL return from
+	* generic/tclPathObj.c: Tcl_FSGetNormalizedPath which was causing
+	* unix/tclUnixFile.c:	segv's per [Bug 1548263]
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c:
 
-	* library/tcltest/tcltest.tcl:
-	* tests/init.test:
-	* tests/tcltest.test:	Added more TIP 85 tests from Arjen Markus.
-	Converted tcltest.test to use a private namespace. Fixed bugs in
-	[tcltest::Eval] revealed by calling [tcltest::test] from a non-global
-	namespace, and namespace errors in init.test.
+2006-08-28  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-06-04  Mo DeJong  <mdejong@users.sourceforge.net>
+	* library/tzdata/America/Havana:      Regenerated from Olson's
+	* library/tzdata/America/Tegucigalpa: tzdata2006k.
+	* library/tzdata/Asia/Gaza:
 
-	* win/README: Update msys+mingw URL.
+2006-08-28  Don Porter	<dgp@users.sourceforge.net>
 
-2002-06-03  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclStringObj.c:	Revised ObjPrintfVA to take care to
+	* generic/tclParseExpr.c:	copy only whole characters when doing
+	%s formatting. This relieves callers of TclObjPrintf() and
+	TclFormatToErrorInfo() from needing to fix arguments to character
+	boundaries. Tcl_ParseExpr() simplified by taking advantage. [Bug
+	1547786]
 
-	* doc/tcltest.n:
-	* library/tcltest/tcltest.tcl:
-	* library/tcltest/pkgIndex.tcl:
-	* tests/tcltest.test:  Implementation of TIP 85. Allows tcltest users
-	to add new legal values of the -match option to [test], associating
-	each with a Tcl command that does the matching of expected results
-	with actual results of tests. Thanks to Arjen Markus. => tcltest 2.1
-	[Patch 521362]
+	* generic/tclStringObj.c:	Corrected TclFormatObj's failure to
+	count up the number of arguments required by examining the format
+	string. [Bug 1547681]
 
-2002-06-03  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-08-27  Joe Mistachkin  <joe@mistachkin.com>
 
-	* doc/namespace.n: added description of [namepace forget] behaviour
-	for unqualified patterns [Bug 559268]
+	* generic/tclClock.c (ClockClicksObjCmd): Fix nested macro breakage
+	with TCL_MEM_DEBUG enabled. [Bug 1547662]
 
-2002-06-03  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-08-26  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclExecute.c: reverting an accidental modification in the
-	last commit.
+	* doc/namespace.n:
+	* generic/tclNamesp.c:
+	* tests/upvar.test: bugfix, docs clarification and new tests for
+	[namespace upvar] as follow up to [Bug 1546833], reported by Will
+	Duquette.
 
-2002-06-03  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-08-24  Kevin B. Kenny  <kennykb@acm.org>
 
-	* doc/Tcl.n: clarify the empty variable name issue ([Bug 549285]
-	reported by Tom Krehbiel, patch by Don Porter).
+	* library/tzdata: Regenerated, including several new files, from
+	Olson's tzdata2006j.
+	* library/clock.tcl:
+	* tests/clock.test: Removed an early testing hack that allowed loading
+	'registry' from the build tree rather than an installed one. This is a
+	workaround for [Bug 15232730], which remains open because it's a
+	symptom of a deeper underlying problem.
 
-2002-05-31  Don Porter  <dgp@users.sourceforge.net>
+2006-08-23  Don Porter	<dgp@users.sourceforge.net>
 
-	* library/package.tcl:	Fixed leak of slave interp in [pkg_mkIndex].
-	Thanks to Helmut for report. [Bug 550534]
+	* generic/tclParseExpr.c:	Minimal collection of new tests
+	* tests/parseExpr.test:		testing the error messages of the new
+	expr parser. Several bug fixes and code simplifications that appeared
+	during that effort.
 
-	* tests/io.test:
-	* tests/main.test:  Use the "stdio" constraint to control whether an
-	[open "|[interpreter]"] is attempted.
-
-	* generic/tclExecute.c (TclMathInProgress,TclExecuteByteCode
-	(ExprCallMathFunc):
-	* generic/tclInt.h (TclMathInProgress):
-	* unix/Makefile.in (tclMtherr.*):
-	* unix/configure.in (NEED_MATHERR):
-	* unix/tclAppInit.c (matherr):
-	* unix/tclMtherr.c (removed file):
-	* win/tclWinMtherr.c (_matherr): Removed internal routine
-	TclMathInProgress and Unix implementation of matherr(). These are now
-	obsolete, dealing with very old versions of the C math library.
-	Windows version is retained in case Borland compilers require it, but
-	it is inactive. Thanks to Joe English. [Bug 474335, Patch 555635]
-	* unix/configure: regen
-
-2002-05-30  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-08-21  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCompExpr.c:
-	* generic/tclCompile.c:
-	* generic/tclCompile.h: removed exprIsJustVarRef and
-	exprIsComparison from the ExprInfo and CompileEnv structs. These were
-	set, but not used since dec 1999 [Bug 562383].
+	* generic/tclIOUtil.c:	Revisions to complete the thread finalization
+	of the cwdPathPtr. [Bug 1536142]
 
-2002-05-30  Vince Darley  <vincentdarley@users.sourceforge.net>
+	* generic/tclParseExpr.c:	Revised mistaken call to
+	TclCheckBadOctal(), so both [expr 08] and [expr 08z] have same
+	additional info in error message.
 
-	* generic/tclFileName.c (TclGlob): fix to longstanding 'knownBug' in
-	fileName tests 15.2-15.4, and fix to a new Tcl 8.4 bug in certain uses
-	of 'glob -tails'.
-	* tests/fileName.test: removed 'knownBug' flag from some tests, added
-	some new tests for above bugs.
+	* tests/compExpr-old.test:	Update existing tests to not fail with
+	* tests/compExpr.test:		the new expr parser.
+	* tests/compile.test:
+	* tests/expr-old.test:
+	* tests/expr.test:
+	* tests/for.test:
+	* tests/if.test:
+	* tests/parseExpr.test:
+	* tests/while.test:
 
-2002-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+2006-08-21  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* unix/configure: regen'ed
-	* unix/configure.in: replaced bigendian check with autoconf standard
-	AC_C_BIG_ENDIAN, which defined WORDS_BIGENDIAN on bigendian systems.
-	* generic/tclUtf.c (Tcl_UniCharNcmp):
-	* generic/tclInt.h (TclUniCharNcmp): use WORDS_BIGENDIAN instead of
-	TCL_OPTIMIZE_UNICODE_COMPARE to enable memcmp alternative.
+	* win/Makefile.in (gdb): Make this target work so that debugging an
+	msys build is possible.
 
-	* generic/tclExecute.c (TclExecuteByteCode INST_STR_CMP):
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): changed the case for choosing
-	the Tcl_UniCharNcmp compare to when both objs are of StringType, as
-	benchmarks show that is the optimal check (both bigendian and
-	littleendian systems).
+2006-08-21  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-05-29  Don Porter  <dgp@users.sourceforge.net>
+	* macosx/tclMacOSXNotify.c (Tcl_WaitForEvent): if the run loop is
+	already running (e.g. if Tcl_WaitForEvent was called recursively),
+	re-run it in a custom run loop mode containing only the source for the
+	notifier thread, otherwise wakeups from other sources added to the
+	common run loop modes might get lost.
 
-	* generic/tclMain.c: Removed "dummy" reference to Tcl_LinkVar. It is
-	no longer needed since Tcl_Main() now actually calls Tcl_LinkVar().
-	Thanks to Joe English for pointing that out.
+	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): on 64-bit Darwin,
+	pthread_cond_timedwait() appears to have a bug that causes it to wait
+	forever when passed an absolute time which has already been exceeded
+	by the system time; as a workaround, when given a very brief timeout,
+	just do a poll on that platform. [Bug 1457797]
 
-2002-05-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclClock.c (ClockClicksObjCmd): add support for Darwin
+	* generic/tclCmdMZ.c (Tcl_TimeObjCmd):	  nanosecond resolution timer
+	* generic/tclInt.h:			  to [clock clicks] and [time]
+	* unix/configure.in (Darwin):		  when TCL_WIDE_CLICKS defined
+	* unix/tclUnixTime.c (TclpGetWideClicks, TclpWideClicksToNanoseconds):
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* generic/tclExecute.c (TclExecuteByteCode):
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Use the macro version.
-	* generic/tclInt.h (TclUniCharNcmp): Optimised still further with a
-	macro for use in sensitive places like tclExecute.c
+	* unix/tclUnixPort.h (Darwin): override potentially faulty configure
+	detection of termios availability in all cases, since termios is known
+	to be present on all Mac OS X releases since 10.0. [Bug 497147]
 
-	* generic/tclUtf.c (Tcl_UniCharNcmp): Use new flag to figure out when
-	we can use an optimal comparison scheme, and default to the old scheme
-	in other cases which is at least safe.
-	* unix/configure.in (TCL_OPTIMIZE_UNICODE_COMPARE): New optional flag
-	that indicates when we can use memcmp() to compare Unicode strings
-	(i.e. when the high-byte of a Tcl_UniChar precedes the low-byte.)
+2006-08-18  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/tcl.m4 (Darwin): add support for --enable-64bit on x86_64, for
+	universal builds including x86_64, for 64-bit CoreFoundation on
+	Leopard and for use of -mmacosx-version-min instead of
+	MACOSX_DEPLOYMENT_TARGET
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* generic/tclInt.decls:
-	* generic/tclIntDecls.h:
-	* generic/tclStubInit.c:
-	* generic/tclUtf.c: added TclpUtfNcmp2 private command that mirrors
-	Tcl_UtfNcmp, but takes n in bytes, not utf-8 chars. This provides a
-	faster alternative for comparing utf strings internally.
-	(Tcl_UniCharNcmp, Tcl_UniCharNcasecmp): removed the explicit end of
-	string check as it wasn't correct for the function (by doc and logic).
-
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): reworked the string equal
-	comparison code to use TclpUtfNcmp2 as well as short-circuit for equal
-	objects or unequal length strings in the equal case. Removed the use
-	of goto and streamlined the other parts.
-
-	* generic/tclExecute.c (TclExecuteByteCode): added check for object
-	equality in the comparison instructions. Added short-circuit for !=
-	length strings in INST_EQ, INST_NEQ and INST_STR_CMP. Reworked
-	INST_STR_CMP to use TclpUtfNcmp2 where appropriate, and only use
-	Tcl_UniCharNcmp when at least one of the objects is a Unicode obj with
-	no utf bytes.
-
-	* generic/tclCompCmds.c (TclCompileStringCmd): removed error creation
-	in code that no longer throws an error.
+	* generic/tcl.h:	  add fixes for building on Leopard and
+	* unix/tclUnixPort.h:	  support for 64-bit CoreFoundation on Leopard
+	* macosx/tclMacOSXFCmd.c:
 
-	* tests/string.test:
-	* tests/stringComp.test: added more string comparison checks.
+	* unix/tclUnixPort.h: on Darwin x86_64, disable use of vfork as it
+	causes execve to fail intermittently. (rdar://4685553)
 
-	* tests/clock.test: better qualified 9.1 constraint check for %s.
+	* generic/tclTomMath.h: on Darwin 64-bit, for now disable use of
+	128-bit arithmetic through __attribute__ ((mode(TI))), as it leads to
+	link errors due to missing fallbacks. (rdar://4685527)
 
-2002-05-28  Jeff Hobbs  <jeffh@ActiveState.com>
+	* macosx/Tcl.xcodeproj/project.pbxproj: add x86_64 to universal build,
+	switch native release targets to use DWARF with dSYM, Xcode 3.0
+	changes
+	* macosx/README: updates for x86_64 and Xcode 2.4.
 
-	* generic/tclThreadAlloc.c (TclpRealloc, TclpFree): protect against
-	the case when NULL is based.
+	* macosx/Tcl.xcodeproj/default.pbxuser: add test suite target that
+	* macosx/Tcl.xcodeproj/project.pbxproj: runs the tcl test suite at
+	build time and shows clickable test suite errors in the GUI build
+	window.
 
-	* tests/clock.test: added clock-9.1
-	* compat/strftime.c:
-	* generic/tclClock.c:
-	* generic/tclInt.decls:
-	* generic/tclIntDecls.h:
-	* unix/tclUnixTime.c: fix for Windows msvcrt mem leak caused by using
-	an env(TZ) setting trick for in clock format -gmt 1. This also makes
-	%s seem to work correctly with -gmt 1 as well as making it a lot
-	faster by avoid the env(TZ) hack. TclpStrftime now takes useGMT as an
-	arg. [Bug 559376]
-
-2002-05-28  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclIOUtil.c: fixes to Tcl_FSLoadFile when called on a file
-	inside a vfs. This should avoid leaving temporary files sitting around
-	on exit. [Bug 545579]
-
-2002-05-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* win/tclWinError.c: Added comment on conversion of
-	ERROR_NEGATIVE_SEEK because that is a mapping that really belongs, and
-	not a catch-all case.
-	* win/tclWinPort.h (EOVERFLOW): Should be either EFBIG or EINVAL
-	* generic/tclPosixStr.c (Tcl_ErrnoId, Tcl_ErrnoMsg): EOVERFLOW can
-	potentially be a synonym for EINVAL.
-
-2002-05-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	=== Changes due to TIP#91 ===
-
-	* win/tclWinPort.h: Added declaration of EOVERFLOW.
-	* doc/CrtChannel.3: Added documentation of wideSeekProc.
-	* generic/tclIOGT.c (TransformSeekProc, TransformWideSeekProc):
-	Adapted to use the new channel mechanism.
-	* unix/tclUnixChan.c (FileSeekProc, FileWideSeekProc): Renamed
-	FileSeekProc to FileWideSeekProc and created new FileSeekProc which
-	has the old-style interface and which errors out with EOVERFLOW when
-	the returned file position can't fit into the return type (int for
-	historical reasons.)
-	* win/tclWinChan.c (FileSeekProc, FileWideSeekProc): Renamed
-	FileSeekProc to FileWideSeekProc and created new FileSeekProc which
-	has the old-style interface and which errors out with EOVERFLOW when
-	the returned file position can't fit into the return type (int for
-	historical reasons.)
-	* mac/tclMacChan.c (FileSeek): Reverted to old interface; Macs lack
-	large-file support because I can't see how to add it.
-	* generic/tclIO.c (Tcl_Seek, Tcl_Tell): Given these functions
-	knowledge of the new arrangement of channel types.
-	(Tcl_ChannelVersion): Added recognition of new version code.
-	(HaveVersion): New function to do version checking.
-	(Tcl_ChannelBlockModeProc, Tcl_ChannelFlushProc)
-	(Tcl_ChannelHandlerProc): Made these functions use HaveVersion for
-	ease of future maintainability.
-	(Tcl_ChannelBlockModeProc): Obvious lookup function.
-	* generic/tcl.h (Tcl_ChannelType): New wideSeekProc field, and
-	seekProc type restored to old interpretation.
-	(TCL_CHANNEL_VERSION_3): New channel version.
-
-2002-05-24  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
-
-	* tests/winPipe.test: Applied patch for [Bug 549617]. Patch and bug
-	report by Kevin Kenny <kennykb@users.sourceforge.net>.
-
-	* win/tclWinSock.c (TcpWatchProc): Fixed [Bug 557878]. We are not
-	allowed to mess with the watch mask if the socket is a server socket.
-	I believe that the original reporter is George Peter Staplin.
-
-2002-05-21  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* unix/configure: Regen.
-	* unix/configure.in: Invoke SC_ENABLE_SHARED before calling
-	SC_CONFIG_CFLAGS so that the SHARED_BUILD variable can be checked
-	inside SC_CONFIG_CFLAGS.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Pass -non_shared instead of -shared
-	to ld when configured with --disable-shared under OSF. [Bug 540390]
-
-2002-05-20  Daniel Steffen  <das@users.sourceforge.net>
-
-	* generic/tclInt.h: added prototype for TclpFilesystemPathType().
-	* mac/tclMacChan.c: use MSL provided creator type if available instead
-	of the default 'MPW '.
-
-2002-05-16  Joe English  <jenglish@users.sf.net>
-
-	* doc/CrtObjCmd.3: Added Tcl_GetCommandFromObj, Tcl_GetCommandFullName
-	[Bugs 547987, 414921]
-
-2002-05-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* unix/tclUnixChan.c (TtyOutputProc): #if/#endif-ed this function out
-	to stop compiler warnings. Also much general tidying of comments in
-	this file and removal of whitespace from blank lines.
-
-2002-05-13  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* unix/tclUnixChan.c (SETBREAK): Solaris thinks ioctl() takes a signed
-	second argument, and Linux thinks ioctl() takes an unsigned second
-	argument. So need a longer definition of this macro to get neither to
-	spew warnings...
-
-2002-05-13  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclEvent.c:
-	* generic/tclIOUtil.c:
-	* generic/tclInt.h: clean up all memory allocated by the filesystem,
-	via introduction of 'TclFinalizeFilesystem'. Move TclFinalizeLoad into
-	TclFinalizeFilesystem so we can be sure it is called at just the right
-	time. Fix bad comment also. [Bug 555078 and 'fs' part of 543549]
-	* win/tclWinChan.c: fix comment referring to wrong function.
+	* tests/macOSXFCmd.test: fix use of deprecated resource fork paths.
 
-2002-05-10  Don Porter  <dgp@users.sourceforge.net>
+	* unix/tclUnixInit.c (TclpInitLibraryPath): move code that is only
+	needed when TCL_LIBRARY is defined to run only in that case.
 
-	* tests/load.test:
-	* tests/safe.test:
-	* tests/tcltest.test: Corrected some list-quoting issues and other
-	matters that cause tests to fail when the patch includes special
-	characters. Report from Vince Darley. [Bug 554068].
+	* generic/tclLink.c (LinkTraceProc): fix 64-bit signed-with-unsigned
+	comparison warning from gcc4 -Wextra.
 
-2002-05-08    David Gravereaux <davygrvy@pobox.com>
+	* unix/tclUnixChan.c (TclUnixWaitForFile): with timeout < 0, if
+	select() returns early (e.g. due to a signal), call it again instead
+	of returning a timeout result. Fixes intermittent event-13.8 failures.
 
-	* doc/file.n:
-	* tools/man2tcl.c:
-	* tools/man2help2.tcl: Thanks to Peter Spjuth <peter.spjuth@space.se>,
-	again. My prior fix for single-quote macro mis-understanding was
-	wrong. Reverted to reimpliment the 'macro2' proc which handles
-	single-quote macros and restored file.n text arrangement to avoid
-	single-quotes on the first line. Sorry for all the confusion.
+2006-08-17  Don Porter	<dgp@users.sourceforge.net>
 
-2002-05-08  David Gravereaux <davygrvy@pobox.com>
+	* generic/tclCompile.c:		Revised the new set of expression
+	* generic/tclParseExpr.c:	parse error messages.
 
-	* tools/man2tcl.c:
-	* tools/man2help2.tcl: Proper source of macro error mis-understanding
-	single-quote as the leading macro command found and repaired.
+2006-08-16  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/file.n: Reverted to prior state before I messed with it.
+	* generic/tclParseExpr.c:	Replace PrecedenceOf() function with
+	prec[] static array.
 
-2002-05-08  Don Porter  <dgp@users.sourceforge.net>
+2006-08-14  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* library/tcltest/tcltest.tcl: Corrected [uplevel] quoting when
-	[source]-ing test script in subdirectories.
-	* tests/fileName.test:
-	* tests/load.test:
-	* tests/main.test:
-	* tests/tcltest.test:
-	* tests/unixInit.test: Fixes to test suite when there's a space in the
-	working path. Thanks to Kevin Kenny.
-
-2002-05-07  David Gravereaux <davygrvy@pobox.com>
-
-	-- Changes from Peter Spjuth <peter.spjuth@space.se>
-	* tools/man2tcl.c: Increased line buffer size and a bail-out if that
-	should ever be over-run.
-	* tools/man2help.tcl: Include Courier New font in rtf header.
-	* tools/man2help2.tcl: Improved handling of CS/CE fields. Use Courier
-	New for code samples and indent better.
-
-	* doc/file.n:
-	* doc/TraceCmd.3:  winhelp conversion tools where understanding a ' as
-	the first character on a line to be an unknown macro. Not knowing how
-	to repair tools/man2tcl.c, I decided to rearrange the text in the docs
-	instead.
-
-2002-05-07  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclFileName.c: fix to similar segfault when using
-	'glob -types nonsense -dir dirname -join * *'. [Bug 553320]
-
-	* doc/FileSystem.3: further documentation on vfs.
-	* tests/cmdAH.test:
-	* tests/fileSystem.test:
-	* tests/pkgMkindex.test: Fix to testsuite bugs when running out of
-	directory whose name contains '{' or '['.
-
-2002-05-07  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* tests/basic.test: Fix for [Bug 549607]
-	* tests/encoding.test: Fix for [Bug 549610]
-	These are testsuite bugs that caused failures when the filename
-	contained spaces. Report & fix by Kevin Kenny.
-
-2002-05-02  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclFileName.c: fix to freeing a bad object (i.e. segfault)
-	when using 'glob -types nonsense -dir dirname'.
-	* generic/tclWinFile.c: fix to [Bug 551306], also wrapped some long
-	lines.
-	* tests/fileName.test: added several tests for the above bugs.
-	* doc/FileSystem.3: clarified documentation on refCount requirements
-	of the object returned by the path type function.
-	* generic/tclIOUtil.c:
-	* win/tclWinFile.c:
-	* unix/tclUnixFile.c:
-	* mac/tclMacFile.c: moved TclpFilesystemPathType to the platform
-	specific directories, so we can add missing platform-specific
-	implementations. On Windows, 'file system' now returns useful results
-	like "native NTFS", "native FAT" for that system. Unix and MacOS still
-	only return "native".
-	* doc/file.n: clarified documentation.
-	* tests/winFile.test: test for 'file system' returning correct values.
-	* tests/fileSystem.test: test for 'file system' returning correct
-	values. Clean up after failed previous test run.
-
-2002-04-26  Jeff Hobbs  <jeffh@ActiveState.com>
+	* library/clock.tcl (::tcl::clock::add): Added missing braces to
+	clockval validation code. Pointed out on comp.lang.tcl.
 
-	* unix/configure:
-	* unix/tcl.m4: change HP-11 SHLIB_LD_LIBS from "" to ${LIBS} so that
-	the .sl knows its dependent libs.
+2006-08-11  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-04-26  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclNamesp.c: Improvements in buffer management to make
+	namespace creation faster. Plus selected other minor improvements to
+	code quality. [Patch 1352382]
 
-	* tests/obj.test (obj-11.[56]): Test conversion to boolean more
-	thoroughly.
-	* generic/tclObj.c (SetBooleanFromAny): Was not calling an integer
-	parsing function on native 64-bit platforms! [Bug 548686]
+2006-08-10  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-04-24  Jeff Hobbs  <jeffh@ActiveState.com>
+	Misc patches to make code more efficient. [Bug 1530474] (afredd)
+	* generic/*.c, macosx/tclMacOSXNotify.c, unix/tclUnixNotfy.c,
+	* win/tclWinThrd.c: Tidy up invokations of Tcl_Panic() to promote
+	string constant sharing and consistent style.
+	* generic/tclBasic.c (Tcl_CreateInterp): More efficient handling of
+	* generic/tclClock.c (TclClockInit):	 registration of commands not
+						 in global namespace.
+	* generic/tclVar.c (Tcl_UnsetObjCmd): Remove unreachable clause.
 
-	* generic/tclInt.h: corrected TclRememberJoinableThread decl to use
-	VOID instead of void.
-	* generic/tclThreadJoin.c: noted that this code isn't needed on Unix.
+2006-08-09  Don Porter	<dgp@users.sourceforge.net>
 
-2002-04-23  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclEncoding.c:	Replace buffer copy in for loop with
+	call to memcpy(). Thanks to afredd. [Patch 1530262]
 
-	* doc/exec.n:
-	* doc/tclvars.n: doc updates [Patch 509426] (gravereaux)
+2006-08-09  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-04-24  Daniel Steffen  <das@users.sourceforge.net>
+	* generic/tclCmdIL.c (Tcl_LassignObjCmd): Make the wrong#args message
+	a bit more consistent with those used elsewhere. [Bug 1534628]
 
-	* mac/tclMacResource.r: added check of TCLTK_NO_LIBRARY_TEXT_RESOURCES
-	#define to allow disabling the inclusion of the tcl library code in
-	the resource fork of Tcl executables and shared libraries.
+	* generic/tclDictObj.c (DictForCmd): Stop crash when attempting to
+	iterate over an invalid dictionary. [Bug 1531184]
 
-2002-04-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* doc/ParseCmd.3, doc/expr.n, doc/set.n, doc/subst.n, doc/switch.n:
+	* doc/tclvars.n: Ensure that uses of [expr] in documentation examples
+	are also good style (with braces) unless otherwise necessary. [Bug
+	1526581]
 
-	* doc/TraceCmd.3: New file that documents Tcl_CommandTraceInfo,
-	Tcl_TraceCommand and Tcl_UntraceCommand [Bug 414927]
+2006-08-03  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-04-22  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/tclUnixPipe.c (TclpCreateProcess): for USE_VFORK: ensure
+	standard channels are initialized before vfork() so that the child
+	doesn't potentially corrupt global state in the parent's address space
+
+	* tests/compExpr-old.test: add 'oldExprParser' constraint to all tests
+	* tests/compExpr.test:	   that depend on the exact format of the
+	* tests/compile.test:	   error messages of the pre-2006-07-05
+	* tests/expr-old.test:	   expression parser. The constraint is on by
+	* tests/expr.test:	   default (i.e those tests still fail), but
+	* tests/for.test:	   can be turned off by passing '-constraints
+	* tests/if.test:	   newExprParser' to tcltest, which will skip
+	* tests/parseExpr.test:	   the 196 failing tests in the testsuite that
+	* tests/while.test:	   are caused by the new expression parser
+	error messages.
 
-	* generic/tclAlloc.c:
-	* generic/tclInt.h:
-	* generic/tclThreadAlloc.c (new):
-	* unix/Makefile.in:
-	* unix/tclUnixThrd.c:
-	* win/Makefile.in:
-	* win/tclWinInt.h:
-	* win/tclWinThrd.c: added new threaded allocator contributed by AOL
-	that significantly reduces lock contention when multiple threads are
-	in use. Only Windows and Unix implementations are ready, and the
-	Windows one may need work. It is only used by default on Unix for now,
-	and requires that USE_THREAD_ALLOC be defined (--enable-threads on
-	Unix will define this).
+2006-07-31  Kevin B. Kenny  <kennykb@acm.org>
 
-	* generic/tclIOUtil.c (Tcl_FSRegister, Tcl_FSUnregister): corrected
-	calling of Tcl_ConditionWait to ensure that there would be a condition
-	to wait upon.
+	* generic/tclClock.c (ConvertLocalToUTCUsingC): Corrected a regression
+	that caused dates before 1969 to be one day off in the :localtime time
+	zone if TZ is not set. [Bug 1531530]
 
-	* generic/tclCmdAH.c (Tcl_FileObjCmd): added cast in FILE_SIZE.
+2006-07-30  Kevin B. Kenny  <kennykb@acm.org>
 
-	* win/tclWinFCmd.c (DoDeleteFile): check return of setattr API calls
-	in file deletion for correct Win32 API handling.
+	* generic/tclClock.c (GetJulianDayFromEraYearMonthDay): Corrected
+	several errors in converting dates before the Common Era [Bug 1426279]
+	* library/clock.tcl: Corrected syntax errors in generated code for %EC
+	%Ey, and %W format groups [Bug 1505383]. Corrected a bug in cache
+	management for format strings containing [glob] metacharacters [Bug
+	1494664]. Corrected several errors in formatting/scanning of years
+	prior to the Common Era, and added the missing %EE format group to
+	indicate the era.
+	* tools/makeTestCases.tcl: Added code to make sure that %U and %V
+	format groups are included in the tests. (The code depends on %U and
+	%V formatting working correctly when 'makeTestCases.tcl' is run,
+	rather than making a completely independent check.) Added tests for
+	[glob] metacharacters in strings. Added tests for years prior to the
+	Common Era.
+	* tests/clock.test: Rebuilt with new test cases for all the above.
 
-	* win/Makefile.in: correct dependencies for shell, gdb, runtest
-	targets.
+2006-07-30  Joe English	 <jenglish@users.sourceforge.net>
 
-	* doc/clock.n:
-	* compat/strftime.c (_fmt): change strftime to correctly handle
-	localized %c, %x and %X on Windows. Added some notes about how the
-	other values could be further localized.
+	* doc/AppInit.3: Fix typo [Bug 1496886]
 
-2002-04-19  Don Porter  <dgp@users.sourceforge.net>
+2006-07-26  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclMain.c (Tcl_Main): Free the memory allocated for the
-	startup script path. [Bug 543549]
+	* generic/tclExecute.c: Corrected flawed overflow detection in
+	* tests/expr.test:	INST_EXPON that caused [expr 2**64] to return
+	0 instead of the same value as [expr 1<<64].
 
-	* library/msgcat/msgcat.tcl: [mcmax] wasn't using the caller's
-	namespace when determining the max translated length. Also made
-	revisions for better use of namespace variables and more efficient
-	[uplevel]s.
+2006-07-24  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/msgcat.n:
-	* library/msgcat/msgcat.tcl:
-	* library/msgcat/pkgIndex.tcl:	Added [mcload] to the export list of
-	msgcat; bumped to 1.2.3. [Bug 544727]
+	* win/tclWinSock.c:	Correct un-initialized Tcl_DString. Thanks to
+	afredd. [Bug 1518166]
 
-2002-04-20  Daniel Steffen  <das@users.sourceforge.net>
+2006-07-21  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclInt.decls:
-	* generic/tclIntPlatDecls.h:
-	* generic/tclStubInit.c:
-	* mac/tclMacFCmd.c:
-	* mac/tclMacFile.c:
-	* mac/tclMacUtil.c: Modified TclpObjNormalizePath to be alias file
-	aware, and replaced various calls to FSpLocationFrom*Path by calls to
-	new alias file aware versions FSpLLocationFrom*Path. The alias file
-	aware routines don't resolve the last component of a path if it is an
-	alias. This allows [file copy/delete] etc. to act correctly on alias
-	files. (c.f. discussion in [Bug 511666])
+	* generic/tclExecute.c:
+	* tests/execute.test (execute-9.1): dgp's fix for [Bug 1522803].
 
-2002-04-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-07-20  Daniel Steffen  <das@users.sourceforge.net>
 
-	* tests/lindex.test (lindex-3.7):
-	* generic/tclUtil.c (TclGetIntForIndex): Stopped indexes from hitting
-	wide ints. [Bug 526717]
+	* macosx/tclMacOSXNotify.c (Tcl_InitNotifier, Tcl_WaitForEvent):
+	create notifier thread lazily upon first call to Tcl_WaitForEvent()
+	rather than in Tcl_InitNotifier(). Allows calling exeve() in processes
+	where the event loop has not yet been run (Darwin's execve() fails in
+	processes with more than one thread), in particular allows embedders
+	to call fork() followed by execve(), previously the pthread_atfork()
+	child handler's call to Tcl_InitNotifier() would immediately recreate
+	the notifier thread in the child after a fork.
 
-2002-04-18  Miguel Sofer  <msofer@users.sourceforge.net>
+	* macosx/tclMacOSXFCmd.c (TclMacOSXCopyFileAttributes):	   add support
+	* macosx/tclMacOSXNotify.c (Tcl_InitNotifier):		   for weakly
+	* unix/tclUnixInit.c (Tcl_GetEncodingNameFromEnvironment): importing
+	symbols not available on OSX 10.2 or 10.3, enables binaires built on
+	later OSX versions to run on earlier ones.
+	* macosx/Tcl.xcodeproj/project.pbxproj: enable weak-linking; turn on
+						extra warnings.
+	* macosx/README: document how to enable weak-linking; cleanup.
+	* unix/tclUnixPort.h: add support for weak-linking; conditionalize
+	AvailabilityMacros.h inclusion; only disable realpath on 10.2 or
+	earlier when threads are enabled.
+	* unix/tclLoadDyld.c (TclpLoadMemoryGetBuffer): change runtime Darwin
+	* unix/tclUnixInit.c (TclpInitPlatform):	release check to use
+							global initialized
+							once
+	* unix/tclUnixFCmd.c (DoRenameFile, TclpObjNormalizePath): add runtime
+	Darwin release check to determine if realpath is threadsafe.
+	* unix/configure.in: add check on Darwin for compiler support of weak
+	* unix/tcl.m4:	     import and for AvailabilityMacros.h header; move
+	Darwin specific checks & defines that are only relevant to the tcl
+	build out of tcl.m4; restrict framework option to Darwin; clean up
+	quoting and help messages.
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* generic/tclNamesp.c:
-	* tests/info.test: [Bug 545325] info level didn't report namespace
-	eval, bug report by Richard Suchenwirth.
+	* generic/regc_locale.c (cclass):
+	* generic/tclExecute.c (TclExecuteByteCode):
+	* generic/tclIOCmd.c (Tcl_ExecObjCmd):
+	* generic/tclListObj.c (NewListIntRep):
+	* generic/tclObj.c (Tcl_GetLongFromObj, Tcl_GetWideIntFromObj)
+	(FreeBignum, Tcl_SetBignumObj):
+	* generic/tclParseExpr.c (Tcl_ParseExpr):
+	* generic/tclStrToD.c (TclParseNumber):
+	* generic/tclStringObj.c (TclAppendFormattedObjs):
+	* unix/tclLoadDyld.c (TclpLoadMemory):
+	* unix/tclUnixPipe.c (TclpCreateProcess): fix signed-with-unsigned
+	comparison and other warnings from gcc4 -Wextra.
 
-2002-04-18  Don Porter  <dgp@users.sourceforge.net>
+2006-07-13  Andreas Kupries <andreask@activestate.com>
 
-	* doc/subst.n:	Clarified documentation on handling unusual return
-	codes during substitution, and on variable substitutions implied by
-	command substitution, and vice versa. [Bug 536838]
+	* unix/tclUnixPort.h: Added the inclusion of <AvailabilityMacros.h>.
+	The missing header caused the upcoming #if conditions to wrongly
+	exclude realpath, causing file normalize to ignore symbolic links in
+	the path.
 
-2002-04-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-07-11  Zoran Vasiljevic <vasiljevic@users.sourceforge.net>
 
-	* generic/tclCmdIL.c (InfoBodyCmd):
-	* tests/info.test (info-2.6): Proc bodies without string reps would
-	report as empty [Bug 545644]
+	* generic/tclAsync.c: Made Tcl_AsyncDelete() more tolerant when called
+	after all thread TSD has been garbage-collected.
 
-	* generic/tclCmdMZ.c (Tcl_SubstObj): More clarification for comment on
-	behaviour when substitutions are not well-formed, prompted by [Bug
-	536831]; alas, removing the ill-defined behaviour is a lot of work.
+2006-07-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclParseExpr.c:	Completely new expression parser that
+	builds a parse tree instead of operating with deep recursion. This
+	corrects reports of stack-blowing crashes parsing long expressions
+	[Bug 906201] and replaces a fundamentally O(N^2) algorithm with an
+	O(N) one [RFE 903765]. The new parser is better able to generate error
+	messages that clearly report both the nature and context of the syntax
+	error [Bugs 1029267, 1381715]. For now, the code for the old parser is
+	still present and can be activated with a "#define OLD_EXPR_PARSER
+	1". This is for the sake of a clean implementation patch, and for ease
+	of benchmarking. The new parser is non-recursive, so much lighter in
+	stack consumption, but it does use more heap, so there may be cases
+	where parsing of long expressions that succeeded with the old parser
+	will lead to out of memory panics with the new one. There are still
+	more improvements possible on that point, though significant progress
+	may require changes to the Tcl_Token specifications documented for the
+	public Tcl_Parse*() routines.
+	***POTENTIAL INCOMPATIBILITY*** for any callers that rely on the exact
+	(usually terrible) error messages generated by the old parser. This
+	includes a large number of tests in the test suite.
+
+	* generic/tclInt.h:		Replaced TclParseWhiteSpace() with
+	* generic/tclParse.c:		TclParseAllWhiteSpace() which is what
+	* generic/tclParseExpr.c:	all the callers really needed.
+	Breaking whitespace runs at newlines is useful only to the command
+	parsing function, and it can call the file scoped routine
+	ParseWhiteSpace() to do that.
+
+	* tests/expr-old.test:	Removed knownBug constraints that masked
+	* tests/expr.test:	failures due to revised error messages.
+	* tests/parseExpr.test:
 
-2002-04-18  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-06-20  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclExecute.c:
-	* tests/expr-old.test: fix for [Bug 542588] (Phil Ehrens), where "too
-	large integers" were reported as "floating-point value" in [expr]
-	error messages.
+	* generic/tclIOUtil.c:	Changed default configuration to
+	* generic/tclInt.decls: #undef USE_OBSOLETE_FS_HOOKS which disables
+	* generic/tclTest.c:	access to the Tcl 8.3 internal routines for
+	hooking into filesystem operations. Everyone ought to have migrated to
+	Tcl_Filesystems by now.
+	***POTENTIAL INCOMPATIBILITY*** for any code still stuck in the
+	pre-Tcl_Filesystem era.
 
-2002-04-17  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
 
-	* generic/tclEncoding.c (EscapeFromUtfProc):
-	* generic/tclIO.c (WriteChars, Tcl_Close): corrected the handling of
-	outputting end escapes for escape-based encodings.
-	[Bug 526524] (yamamoto)
+	* generic/tclStrToD.c:	Removed dead code that permitted disabling of
+	recognition of the new 0b and 0o numeric formats.
 
-2002-04-17  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclExecute.c: Removed dead code that implemented alternative
+	* generic/tclObj.c:	design where numeric values did not
+	automatically narrow to the smallest Tcl_ObjType required to hold them
 
-	* doc/tcltest.n:  Removed [saveState] and [restoreState] from tcltest
-	2 documentation, effectively deprecating them. [Bug 495660]
-	* library/tcltest/tcltest.tcl: Made separate export for commands kept
-	only for tcltest 1 compatibility.
+	* generic/tclCmdAH.c:	Removed dead code that was old implementation
+	of [format].
 
-	* tests/iogt.test: Revised to run tests in a namespace, rather than
-	use the useless and buggy [saveState] and [restoreState] commands of
-	tcltest. Updated to use tcltest 2 as well. [Patch 544911]
+2006-06-14  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-04-16  Don Porter  <dgp@users.sourceforge.net>
+	* unix/tclUnixPort.h (Darwin): support MAC_OS_X_VERSION_MAX_ALLOWED
+	define from AvailabilityMacros.h: override configure detection and
+	only use API available in the indicated OS version or earlier.
 
-	* tests/io.test: Revised to run tests in a namespace, rather than use
-	the useless and buggy [saveState] and [restoreState] commands of
-	tcltest. Updated to use tcltest 2 as well. [Patch 544546]
+2006-06-14  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-04-15  Miguel Sofer  <msofer@users.sourceforge.net>
+	* doc/format.n, doc/scan.n: Added examples for converting between
+	characters and their numeric interpretations following user prompting.
 
-	* generic/tclProc.c:
-	* tests/proc-old.test: Improved stack trace for TCL_BREAK and
-	TCL_CONTINUE returns from procs. [Bug 536955] (dgp)
+2006-06-13  Donal K. Fellows  <dkf@users.sf.net>
 
-	* generic/tclExecute.c:
-	* tests/compile.test: made bytecodes check for a catch before
-	returning; the compiled [return] is otherwise non-catchable. [Bug
-	542142] reported by Andreas Kupries.
-
-2002-04-15  Don Porter  <dgp@users.sourceforge.net>
-
-	* tests/socket.test:  Increased timeout values so that tests have time
-	to successfully complete even on slow/busy machines. [Bug 523470]
-
-	* doc/tcltest.n:
-	* library/tcltest/tcltest.tcl:
-	* tests/tcltest.test:  Revised [tcltest::test] to return errors when
-	called with invalid syntax and to accept exactly two arguments as
-	documented. Improved error messages. [Bug 497446, Patch 513983]
-	***POTENTIAL INCOMPATIBILITY***: Incompatible with previous
-	tcltest 2.* releases, found only in alpha releases of Tcl 8.4.
-
-2002-04-11  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* generic/tclNotify.c (TclFinalizeNotifier): remove remaining
-	unserviced events on finalization.
-
-	* win/tcl.m4: Enabled COFF as well as CV style debug info with
-	--enable-symbols to allow Dr. Watson users to see function info. More
-	info on debugging levels can be obtained at:
-	http://msdn.microsoft.com/library/en-us/dnvc60/html/gendepdebug.asp
+	* unix/tclLoadDl.c (TclpDlopen): Workaround for a compiler bug in Sun
+	Forte 6. [Bug 1503729]
 
-	* tests/ioCmd.test: fixed iocmd-8.15 to have mac and unixPc variants.
-
-	* generic/tclParse.c (Tcl_ParseVar): conditionally incr obj refcount
-	to prevent possible mem leak.
-
-2002-04-08  Daniel Steffen  <das@users.sourceforge.net>
-
-	* generic/tcl.h: no <sys/types.h> on mac.
-	* mac/tclMacFile.c: minor fixes to Vince's changes from 03-24.
-	* mac/tclMacOSA.c:
-	* mac/tclMacResource.c: added missing Tcl_UtfToExternalDString
-	conversions of resource file names.
-	* mac/tclMacSock.c (TcpGetOptionProc): fixed bug introduced by Andreas
-	on 02-25; changed strcmp's to strncmp's so that option comparison
-	behaves like on other platforms.
-	* mac/tcltkMacBuildSupport.sea.hqx (CW Pro6 changes): added support to
-	allow Tk to hookup C library stderr/stdout to TkConsole.
-	* tests/basic.test:
-	* tests/cmdAH.test:
-	* tests/encoding.test:
-	* tests/fileSystem.test:
-	* tests/ioCmd.test: fixed tests failing on mac: check for existence of
-	[exec], changed some result strings.
-
-2002-04-06  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* unix/tclUnixFCmd.c (Realpath): added a little extra code to
-	initialize a realpath arg when compiling in PURIFY mode in order to
-	prevent spurious purify warnings. We should really create our own
-	realpath implementation, but this will at least quiet purify for now.
-
-2002-04-05  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclCmdMZ.c (Tcl_SubstObj):
-	* tests/subst.test:  Corrected [subst] so that return codes TCL_BREAK
-	and TCL_CONTINUE returned by variable substitution have the same
-	effect as when those codes are returned by command substitution. [Bug
-	536879]
-
-2002-04-03  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* library/tcltest/tcltest.tcl: added getMatchingFiles back (alias
-	to GetMatchingFiles), which was a public function in tcltest 1.0.
-
-2002-04-01  Vince Darley  <vincentdarley@users.sourceforge.net>
-
-	* generic/tclEnv.c:
-	* generic/tclIOUtil.c: invalidate filesystem cache when the user
-	changes env(HOME). Fixes [Bug 535621]. Also cleaned up some of the
-	documentation.
-	* tests/fileSystem.test: added test for bug just fixed.
-
-2002-04-01  Kevin Kenny  <kennykb@acm.org>
-
-	* win/tclWinTime.c (Tcl_GetTime): made the checks of clock frequency
-	more permissive to cope with the fact that Win98SE is observed to
-	return 1.19318 in place of 1.193182 for the performance counter
-	frequency.
-
-2002-03-29  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* generic/tclCmdMZ.c (Tcl_TraceObjCmd, TraceVarProc)
-	(TraceCommandProc, TclTraceCommandObjCmd):  corrected potential
-	double-free of traces on variables by flagging in Trace*Proc that it
-	will free the var in case the eval wants to delete the var trace as
-	well. [Bug 536937]
-	Also converted Tcl_UntraceVar -> Tcl_UntraceVar2 and Tcl_Eval to
-	Tcl_EvalEx in Trace*Proc for slight efficiency improvement.
-
-2002-03-29  Don Porter  <dgp@users.sourceforge.net>
-
-	* doc/AllowExc.3:
-	* generic/tclBasic.c (Tcl_EvalObjv,Tcl_EvalEx,Tcl_EvalObjEx):
-	* generic/tclCompile.h (TclCompEvalObj):
-	* generic/tclExecute.c (TclCompEvalObj,TclExecuteByteCode):
-	* tests/basic.test: Corrected problems with Tcl_AllowExceptions having
-	influence over the wrong scope of Tcl_*Eval* calls. Patch from Miguel
-	Sofer. Report from Jean-Claude Wippler. [Bug 219181]
-
-2002-03-28  Don Porter  <dgp@users.sourceforge.net>
-
-	* generic/tclVar.c: Refactored CallTraces to collect repeated handling
-	of its returned value into CallTraces itself.
-
-2002-03-28  David Gravereaux <davygrvy@pobox.com>
-
-	* tools/feather.bmp:
-	* tools/man2help.tcl:
-	* tools/man2help2.tcl:
-	* win/makefile.vc: More winhelp target fixups. Added a feather bitmap
-	to the non-scrollable area and changed the color to be yellow from a
-	plain white. The colors can be whatever we want them to be, but
-	thought I would start with something bold. [Bug 527941]
-
-	* doc/SetVar.3:
-	* doc/TraceVar.3:
-	* doc/UpVar.3: .AP macro syntax repair.
-
-2002-03-27  David Gravereaux <davygrvy@pobox.com>
-
-	* tools/man2help.tcl:
-	* win/makefile.vc:  winhelp target now copies all needed files from
-	tools/ to a workarea under $(OUT_DIR) and builds it from there.	No
-	build cruft is left in tools/ anymore. All paths used in man2help.tcl
-	are now relative to where the script is. [Bug 527941]
-
-2002-03-27  David Gravereaux <davygrvy@pobox.com>
-
-	* win/.cvsignore:
-	* win/buildall.vc.bat:
-	* win/coffbase.txt:
-	* win/makefile.vc:
-	* win/nmakehlp.c (new):
-	* win/rules.vc: First draft fix for [Bug 527941]. More changes need to
-	done to the makehelp target to get to stop leaving build files in the
-	tools/ directory. This does not address the syntax errors in the man
-	files. Having the contents of tcl.hpj(.in) inside makefile.vc allows
-	for version numbers to be replaced with macros.
+2006-06-06  Don Porter	<dgp@users.sourceforge.net>
 
-	The new nmakehlp.c is built by rules.vc in preprocessing and removes
-	the need to use tricky shell syntax that wasn't compatible on Win9x
-	systems.  Clean targets made Win9x complient.  This is a first draft
-	repair for [Bug 533862].
+	* doc/GetStdChan.3:	Added recommendation that each call to
+	Tcl_SetStdChannel() be accompanied by a call to Tcl_RegisterChannel().
 
-2002-03-28  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-06-05  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* generic/tclBasic.c (Tcl_EvalEx): passing the correct commandSize
-	to TclEvalObjvInternal. [Bug 219362], fix by David Knoll.
+	* doc/Alloc.3: Added documentation of promise that Tcl_Realloc(NULL,x)
+	is the same as Tcl_Alloc(x), as discussed in comp.lang.tcl. Also fixed
+	nonsense sentence to say something meaningful.
 
-2002-03-28  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-05-29  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclBasic.c (Tcl_EvalEx):
-	* tests/basic.test: avoid exceptional returns at level 0
-	[Bug 219181]
+	* generic/tcl.h (Tcl_DecrRefCount): use if/else construct to allow
+	placement in unbraced outer if/else conditions. (jcw)
 
-2002-03-27  Don Porter  <dgp@users.sourceforge.net>
+2006-05-27  Daniel Steffen  <das@users.sourceforge.net>
 
-	* doc/tcltest.n ([mainThread]):
-	* library/tcltest/tcltest.tcl:
-	* tests/tcltest.test:  Major code cleanup to deal with whitespace,
-	coding conventions, and namespace issues, with several minor bugs
-	fixed in the process.
+	* macosx/tclMacOSXNotify.c: implemented pthread_atfork() handler that
+	* unix/tcl.m4 (Darwin):	    recreates CoreFoundation state and
+	notifier thread in the child after a fork(). Note that pthread_atfork
+	is available starting with Tiger only. Because vfork() is used by the
+	core on Darwin, [exec]/[open] are not affected by this fix, only
+	extensions or embedders that call fork() directly (such as TclX).
+	However, this only makes fork() safe from corefoundation tcl with
+	--disable-threads; as on all platforms, forked children may deadlock
+	in threaded tcl due to the potential for stale locked mutexes in the
+	child. [Patch 923072]
 
-	* tests/main.test: Added missing [after cancel]s.
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-2002-03-25  Don Porter  <dgp@users.sourceforge.net>
+2006-05-24  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* tests/main.test: Removed workarounds for Bug 495977.
+	* unix/tcl.m4 (SC_CONFIG_SYSTEM): Fixed quoting of command script to
+	awk; it was a rarely used branch, but it was wrong. [Bug 1494160]
 
-	* library/tcltest/tcltest.tcl:	Keep the value of $::auto_path
-	unchanged, so that the tcltest package can test code that depends
-	on auto-loading. If a testing application needs $::auto_path pruned,
-	it should do that itself. [Bug 495726]
-	Improve the processing of the -constraints option to [test] so that
-	constraint lists can have arbitrary whitespace, and non-lists don't
-	blow things up. [Bug 495977]
-	Corrected faulty variable initialization. [Bug 534845]
+2006-05-23  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-03-25  Miguel Sofer  <msofer@users.sourceforge.net>
+	* doc/chan.n, doc/refchan.n: Tighten up the documentation to follow a
+	slightly more consistent style with regard to argument capitalization.
 
-	* doc/CrtTrace.3: small doc correction
-	* generic/tclBasic.c (Tcl_DeleteTrace): Allow NULL callback on
-	trace deletions [Bug 534728] (Hemang Lavana).
+2006-05-13  Don Porter	<dgp@users.sourceforge.net>
 
-2002-03-24  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclProc.c (ProcCompileProc): When a bump of the compile
+	epoch forces the re-compile of a proc body, take care not to overwrite
+	any Proc struct that may be referred to on the active call stack. This
+	fixes [Bug 1482718]. Note that the fix will not be effective for code
+	that calls the private routine TclProcCompileProc() directly.
 
-	* generic/tclBasic.c (Tcl_EvalObjv): replaced obscure, incorrect
-	code as described in [Bug 533907] (Don Porter).
+2006-05-13  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-03-24  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclEvent.c (HandleBgErrors): fix leak. [Coverity issue 86]
 
-	* library/tcltest/tcltest.tcl:	Use [interpreter] to set/query the
-	executable currently running the tcltest package. [Bug 454050]
+2006-05-05  Don Porter	<dgp@users.sourceforge.net>
 
-	* library/tcltest/tcltest.tcl:	Allow non-proc commands to be used
-	as the customization hooks. [Bug 495662]
+	* generic/tclMain.c (Tcl_Main):		Corrected flaw that required
+	* tests/main.test: (Tcl_Main-4.5):	processing of one interactive
+	command before passing control to the loop routine registered with
+	Tcl_SetMainLoop(). [Bug 1481986]
 
-2002-03-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+2006-05-04  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclFilename.c:
-	* generic/tclFCmd.c:
-	* generic/tclTest.c:
+	* README:		Bump version number to 8.5a5
 	* generic/tcl.h:
-	* generic/tclIOUtil.c:
-	* win/tclWinFile.c:
-	* win/tclWinFCmd.c:
-	* win/tclWinPipe.c:
-	* unix/tclUnixFile.c:
-	* unix/tclUnixFCmd.c:
-	* mac/tclMacFile.c:
-	* doc/FileSystem.3:
-	* doc/file.n:
-	* tests/cmdAH.test:
-	* tests/fileName.test:
-	* tests/fileSystem.test: (new file)
-	* tests/winFCmd.test: fix [Bug 511666] and [Bug 511658], and improved
-	documentation of some aspects of the filesystem, particularly
-	'Tcl_FSMatchInDirectory' which now might match a single file/directory
-	only, and 'file normalize' which wasn't very clear before. Removed
-	inconsistency betweens docs and the Tcl_Filesystem structure. Also
-	fixed [Bug 523217] and corrected file normalization on Unix so that it
-	expands symbolic links. Added some new tests of the filesystem code
-	(in the new file 'fileSystem.test'), and some extra tests for correct
-	handling of symbolic links. Fix to [Bug 530960] which shows up on
-	Win98. Made comparison with ".com" case insensitive in tclWinPipe.c
-
-	***POTENTIAL INCOMPATIBILITY***: But only between alpha releases
-	(users of the new Tcl_Filesystem lookup table in Tcl 8.4a4 need to
-	handle the new way in which Tcl may call Tcl_FSMatchInDirectory, and
-	'file normalize' on unix now behaves correctly). Only known impact is
-	with the 'tclvfs' extension.
-
-2002-03-22  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* tests/basic.test (basic-46.1): adding test for [Bug 533758], fixed
-	earlier today.
-
-2002-03-22  Jeff Hobbs  <jeffh@ActiveState.com>
-
-	* win/tclWinInt.h: moved undef of TCL_STORAGE_CLASS. [Bug 478579]
-
-2002-03-22  Miguel Sofer  <msofer@users.sourceforge.net>
-
-	* generic/tclBasic.c (Tcl_EvalObjEx):
-	* generic/tclExecute.c (TclCompEvalObj): fixed the errorInfo for
-	return codes other than (TCL_OK, TCL_ERROR) to runLevel 0 [Bug
-	533758]. Removed the static RecordTracebackInfo(), as its
-	functionality is easily replicated by Tcl_LogCommandInfo. Bug and
-	redundancy noted by Don Porter.
-
-2002-03-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* doc/expr.n: Improved documentation for ceil and floor [Bug 530535]
-
-2002-03-20  Don Porter  <dgp@users.sourceforge.net>
-
-	* doc/SetVar.3:
-	* doc/TraceVar.3:
-	* doc/UpVar.3:
-	* generic/tcl.h (Tcl_VarTraceProc):
-	* generic/tcl.decls (Tcl_GetVar2, Tcl_SetVar2, Tcl_TraceVar2)
-	(Tcl_UnsetVar2, Tcl_UntraceVar2, Tcl_UpVar2, Tcl_VarTraceInfo2)
-	(Tcl_GetVar2Ex, TclSetVar2Ex):
-	* generic/tclCmdMZ.c (TraceVarProc):
-	* generic/tclEnv.c (EnvTraceProc):
-	* generic/tclEvent.c (VwaitVarProc):
-	* generic/tclInt.decls (TclLookupVar,TclPrecTraceProc):
-	* generic/tclLink.c (LinkTraceProc):
-	* generic/tclUtil.c (TclPrecTraceProc):
-	* generic/tclVar.c (CallTraces, MakeUpvar, VarErrMsg, TclLookupVar,
-	(Tcl_GetVar2, Tcl_SetVar2, Tcl_TraceVar2, Tcl_UnsetVar2)
-	(Tcl_UntraceVar2, Tcl_UpVar2, Tcl_VarTraceInfo2, Tcl_GetVar2Ex)
-	(TclSetVar2Ex): Updated interfaces of generic/tclVar.c according to
-	TIP 27. In particular, the "part2" arguments were CONSTified.
-	[Patch 532642]
-	* generic/tclDecls.h:
-	* generic/tclIntDecls.h: make genstubs
-
-2002-03-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	* tests/compile.test (compile-12.3): Test to detect bug 530320.
-	* generic/tclCompile.c (TclCompileTokens): Fixed buffer overrun
-	reported in bug 530320.
-
-2002-03-14  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* win/configure: Regen.
-	* win/configure.in: Add configure time test for SEH support in the
-	compiler.
-	* win/tclWin32Dll.c (ESP, EBP, TclpCheckStackSpace,
-	(_except_checkstackspace_handler):
-	* win/tclWinChan.c (ESP, EBP, Tcl_MakeFileChannel,
-	(_except_makefilechannel_handler):
-	* win/tclWinFCmd.c (ESP, EBP, DoRenameFile, DoCopyFile,
-	(_except_dorenamefile_handler, _except_docopyfile_handler): Implement
-	SEH support under gcc using inline asm. Tcl and Tk should now compile
-	with Mingw 1.1. [Patch 525746]
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/configure.in:
 
-2002-03-14  Mo DeJong  <mdejong@users.sourceforge.net>
+	* unix/configure:	autoconf-2.59
+	* win/configure:
 
-	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile): Handle an SEH exception
-	with EXCEPTION_EXECUTE_HANDLER instead of restarting the faulting
-	instruction with EXCEPTION_CONTINUE_EXECUTION. Bug 466102 provides an
-	example of how restarting could send Tcl into an infinite loop. [Patch
-	525746]
+	* generic/tclBasic.c (ExprSrandFunc): Restore acceptance of wide/big
+	* doc/mathfunc.n: integer values by srand(). [Bug 1480509]
 
-2002-03-11  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-04-26  Don Porter	<dgp@users.sourceforge.net>
 
-	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile, DoDeleteFile,
-	(DoRemoveJustDirectory): Make sure we don't pass NULL or "" as a path
-	name to Win32 API functions since this was crashing under Windows 98.
+	*** 8.5a4 TAGGED FOR RELEASE ***
 
-2002-03-11  Don Porter  <dgp@users.sourceforge.net>
+	* changes:	Updates for another RC.
 
-	* library/tcltest/tcltest.tcl:
-	* library/tcltest/pkgIndex.tcl: Bumped tcltest package to 2.0.2.
+	* generic/tclBinary.c:	Revised the handling of the Q and q format
+	* generic/tclInt.h:	specifiers for [binary] to account for the
+	* generic/tclStrToD.c:	"middle endian" floating point format used in
+	Nokia N770.
 
-2002-03-11  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-04-25  Don Porter	<dgp@users.sourceforge.net>
 
-	* library/tcltest/tcltest.tcl (getMatchingFiles): Pass a proper list
-	to foreach to avoid munging a Windows patch like D:\Foo\Bar into
-	D:FooBar before the glob.
+	* doc/DoubleObj.3:	More doc updates for TIP 237.
+	* doc/expr.n:
+	* doc/format.n:
+	* doc/mathfunc.n:
+	* doc/scan.n:
+	* doc/string.n:
 
-2002-03-11  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclScan.c:	[scan $s %u] is documented to accept only
+	* tests/scan.test:	decimal formatted integers. Fixed to match.
 
-	* generic/tclEncoding.c: Fix typo in comment.
-	* generic/tclIO.c (DoReadChars, ReadBytes, ReadChars): Use NULL value
-	instead of pointer set to NULL to make things more clear. Reorder
-	arguments so that they match the function signatures. Cleanup little
-	typos and add more descriptive comment.
+2006-04-19  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-03-08  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclStrToD.c: Added code to support the "middle endian"
+	floating point format used in the Nokia N770's software-based floating
+	point. Thanks to Bruce Johnson for reporting this bug, originally on
+	http://wiki.tcl.tk/15408.
+	* library/clock.tcl: Fixed a bug with Daylight Saving Time and Posix
+	time zone specifiers reported by Martin Lemburg in
+	http://groups.google.com/group/comp.lang.tcl/browse_thread/thread/9a8b15a4dfc0b7a0
+	(and not at SourceForge).
+	* tests/clock.test: Added test case for the above bug.
 
-	* win/README: Update to indicate that Mingw 1.1 is required to build
-	Tcl. Add section describing new msys based build process. Update
-	Cygwin build instructions so users know where to find Mingw 1.1.
+2006-04-18  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-03-08  Jeff Hobbs  <jeffh@ActiveState.com>
+	* doc/IntObj.3: Minor review fixes, including better documentation of
+	the behaviour of Tcl_GetBignumAndClearObj.
 
-	* win/tclWinFCmd.c (DoCopyFile): correctly set retval to TCL_OK.
+2006-04-17  Don Porter	<dgp@users.sourceforge.net>
 
-2002-03-07  Mo DeJong  <mdejong@users.sourceforge.net>
+	* doc/IntObj.3: Documentation changes to account for TIP 237 changes.
+	* doc/Object.3: [Bug 1446971]
 
-	* win/tclWin32Dll.c (TclpCheckStackSpace):
-	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile): Replace hard coded
-	constants with Win32 symbolic names. Move control flow statements out
-	of __try blocks since the documentation indicates it is frowned upon.
+2006-04-12  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-03-07  Don Porter  <dgp@users.sourceforge.net>
+	* generic/regc_locale.c (cclass): Redefined the meaning of [:print:]
+	to be exactly UNICODE letters, numbers, punctuation, symbols and
+	spaces (*not* whitespace). [Bug 1376892]
 
-	* doc/interp.n:
-	* generic/tclInterp.c (Tcl_InterpObjCmd,SlaveObjCmd,
-	(SlaveRecursionLimit):
-	* generic/tclTest.c:
-	* tests/interp.test: Added the [interp recursionlimit] command to
-	set/query the recursion limit of an interpreter.  Proposal and
-	implementation from Stephen Trier. [TIP 87, Patch 522849]
+2006-04-11  Don Porter	<dgp@users.sourceforge.net>
 
-2002-03-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclTrace.c:	Stop some interference between enter traces
+	* tests/trace.test:	and enterstep traces. [Bug 1458266]
 
-	* generic/tcl.h, tools/tcl.wse.in, unix/configure.in,
-	* unix/tcl.spec, win/README.binary, win/configure.in, README:
-	Bumped patchlevel; this might need to change in the future, but it
-	will help us distinguish between the CVS version and the most
-	recent released version.
+2006-04-07  Don Porter	<dgp@users.sourceforge.net>
 
-2002-03-06  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclPathObj.c: Yet another revised fix for the [Bug 1379287]
+	* tests/fileSystem.test:	family of path normalization bugs.
 
-	* generic/tclInt.h: for unshared objects, TclDecrRefCount now frees
-	the internal rep before the string rep - just like the non-macro
-	Tcl_DecrRefCount/TclFreeObj [Bug 524802].
+2006-04-06  Jeff Hobbs	<jeffh@ActiveState.com>
 
-2002-03-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* generic/tclRegexp.c (FinalizeRegexp): full reset data to indicate
+	readiness for reinitialization.
 
-	* doc/lsearch.n: Documentation of new features, plus examples.
-	* tests/lsearch.test: Tests of new features.
-	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): TIP#80 support.  See
-	http://purl.org/tcl/tip/80 for details.
+2006-04-06  Don Porter	<dgp@users.sourceforge.net>
 
-2002-03-05  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct):	It seems there
+	* tests/indexObj.test:	are extensions that rely on the prior behavior
+	* doc/GetIndex.3:	that the empty string cannot succeed as a
+	unique prefix matcher, so I'm restoring Donal Fellows's solution.
+	Added mention of this detail to the documentation. [Bug 1464039]
 
-	*** 8.4a4 TAGGED FOR RELEASE ***
+	* tests/compExpr-old.test:	Updated testmathfunctions constraint
+	* tests/compExpr.test:		to post-TIP-232 world.
+	* tests/expr-old.test:
+	* tests/expr.test:
+	* tests/info.test:
 
-	* unix/tclUnixChan.c: initial remedy for [Bug 525783] flush problem
-	introduced by TIP #35. This may not satisfy true serial channels, but
-	it restores the correct flushing of std* channels on exit.
+	* tests/indexObj.test:	Corrected other test errors revealed by
+	* tests/upvar.test:	testing outside the tcltest application.
 
-	* unix/README: added --enable-langinfo doc.
+	* generic/tclPathObj.c: Revised fix for the [Bug 1379287] family of
+	path normalization bugs.
 
-	* unix/tcl.spec:
-	* tools/tcl.wse.in: fixed URL refs to use www.tcl.tk or SF.
+2006-04-06  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-03-04  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/tcl.m4: removed TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
+	define on Darwin. [Bug 1457515]
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
 
-	* README:
-	* mac/README:
-	* unix/Makefile.in:
-	* unix/README:
-	* win/README:
-	* win/README.binary: updated to use www.tcl.tk URL.
+2006-04-05  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/Makefile.in: added older ChangeLogs to dist target.
+	* win/tclWinInit.c:	More careful calls to Tcl_DStringSetLength()
+	* win/tclWinSock.c:	to avoid creating invalid DString states. Bump
+	* win/tclWinDde.c:	to version 1.3.2. [RFE 1366195]
+	* library/dde/pkgIndex.tcl:
 
-	* tests/io.test:
-	* tests/encoding.test: corrected iso2022 encoding results.
-	added encoding-24.*
-	* generic/tclEncoding.c (EscapeFromUtfProc): corrected output of
-	escape codes as per RFC 1468. [Patch 474358] (taguchi)
-	(TclFinalizeEncodingSubsystem): corrected potential double-free
-	when encodings were finalized on exit. [Bug 219314, 524674]
+	* library/reg/pkgIndex.tcl:	Bump to registry 1.2 because
+	* win/tclWinReg.c:	Registry_Unload() is a new public routine
+	* win/Makefile.in:	compared to the 1.1.* releases.
 
-2002-03-01  Jeff Hobbs  <jeffh@ActiveState.com>
+	* win/configure.in:	Bump package version numbers.
+	* win/configure:	autoconf 2.59
 
-	* library/encoding/iso2022-jp.enc:
-	* library/encoding/iso2022.enc:
-	* tools/encoding/iso2022-jp.esc:
-	* tools/encoding/iso2022.esc: gave <ESC>$B precedence over <ESC>$@,
-	based on comments (point 1) in [Bug 219283] (RFC 1468)
+2006-04-05  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* tests/encoding.test: added encoding-23.* tests
-	* generic/tclIO.c (FilterInputBytes): reset the TCL_ENCODING_START
-	flags in the ChannelState when using 'gets'. [Bug 523988]
-	Also reduced the value of ENCODING_LINESIZE from 30 to 20 as this
-	seems to improve the performance of 'gets' according to tclbench.
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct): Allow empty
+	strings to be matched by the Tcl_GetIndexFromObj machinery, in the
+	same manner as any other key. [Bug 1464039]
 
-2002-02-28  Jeff Hobbs  <jeffh@ActiveState.com>
+2006-04-03  Andreas Kupries <andreask@activestate.com>
 
-	* generic/tclCmdMZ.c (TraceCommandProc): ensure that TraceCommandInfo
-	structure was also deleted when a command was deleted to prevent a
-	mem leak.
+	* generic/tclIO.c (ReadChars): Added check, panic and commentary to a
+	piece of code which relies on BUFFER_PADDING to create enough space at
+	the beginning of each buffer for the insertion of partial multibyte
+	data at the beginning of a buffer. Commentary explains why this code
+	is OK, and the panic is as a precaution if someone twiddled the
+	BUFFER_PADDING into uselessness.
 
-	* generic/tclBasic.c (Tcl_CreateObjTrace): set tracePtr->flags
-	correctly.
+	* generic/tclIO.c (ReadChars): Temporarily suppress the use of
+	TCL_ENCODING_END set when EOF was reached while the buffer we are
+	converting is not truly the last buffer in the queue. Together with
+	the Utf bug below it was possible to completely wreck the buffer data
+	structures, eventually crashing Tcl. [Bug 1462248]
 
-	* generic/tclTimer.c (TimerExitProc): remove remaining events in
-	tls on thread exit.
+	* generic/tclEncoding.c (UtfToUtfProc): Stop accessing memory beyond
+	the end of the input buffer when TCL_ENCODING_END is set and the last
+	bytes of the buffer start a multi-byte sequence. This bug contributed
+	to [Bug 1462248].
 
-2002-02-28  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-03-30  Miguel Sofer  <msofer@users.sf.net>
 
-	* generic/tclNamesp.c: allow cached fully-qualified namespace names to
-	be usable from different namespaces within the same interpreter
-	without forcing a new lookup [Patch 458872].
+	* generic/tclExecute.c: remove unused var and silence gcc warning
 
-2002-02-28  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-03-29  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclExecute.c: Replaced a few direct stack accesses with the
-	POP_OBJECT() macro [Bug 507181] (Don Porter).
+	* win/Makefile.in: convert _NATIVE paths to use / to avoid ".\"
+	path-as-escape issue.
 
-2002-02-27  Don Porter  <dgp@users.sourceforge.net>
+2006-03-29  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/GetIndex.3:
-	* generic/tcl.decls (Tcl_GetIndexFromObjStruct):
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct):  Revised the
-	prototype of the Tcl_GetIndexFromObjStruct to take its struct
-	table as a (CONST VOID *) argument, better describing what it is,
-	maintaining source compatibility, and adding CONST correctness
-	according to TIP 27.  Thanks to Joe English for an elegant
-	solution. [Bug 520304]
+	* changes:	Updates for another RC.
 
-	* generic/tclDecls.h: make genstubs
+	* generic/tclPathObj.c:	 More fixes for path normalization when /../
+	* tests/fileSystem.test: tries to go beyond root.[Bug 1379287]
 
-	* generic/tclMain.c (Tcl_Main,StdinProc):  Corrected some reference
-	count management errors on the interactive command Tcl_Obj found by
-	Purify. Thanks to Jeff Hobbs for the report and assistance.
+	* generic/tclExecute.c: Revised INST_MOD implementation to do
+	calculations in native types as much as possible, moving to mp_ints
+	only when necessary.
 
-2002-02-27  Jeff Hobbs  <jeffh@ActiveState.com>
+2006-03-28  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclBasic.c (Tcl_EvalTokensStandard): corrected mem leak
-	in error case.
+	* win/tclWinPipe.c (TclpCreateProcess): change panics to Tcl errors
+	and do proper refcounting of noe objPtr. [Bug 1194429]
 
-	* generic/tclTest.c (TestStatProc[123]): correct harmless UMRs.
+	* unix/tcl.m4, win/tcl.m4: []-quote AC_DEFUN functions.
 
-	* generic/tclLink.c (Tcl_LinkVar): correct mem leak in error case.
+2006-03-28  Daniel Steffen  <das@users.sourceforge.net>
 
-2002-02-27  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* macosx/Tcl.xcode/default.pbxuser:	add '-singleproc 1' cli arg to
+	* macosx/Tcl.xcodeproj/default.pbxuser: tcltest to ease test debugging
 
-	* tests/socket.test (2.7): Accepted and applied patch for [Bug 523470]
-	provided by Don Porter <dgp@users.sourceforge.net> to avoid timing
-	problems in that test.
+	* macosx/Tcl.xcode/project.pbxproj:	removed $prefix/share from
+	* macosx/Tcl.xcodeproj/project.pbxproj: TCL_PACKAGE_PATH as per change
+	to unix/configure.in of 2006-03-13.
 
-	* unix/tclUnixChan.c (TclpOpenFileChannel): Added code to regonize
-	"/dev/tty" (by name) and to not handle it as tty / serial line. This
-	is the controlling terminal and is special. Setting it into raw mode
-	as is done for other tty's is a bad idea. This is a hackish fix for
-	expect [Bug 520624]. The fix has limitation: Tcl_MakeFileChannel
-	handles tty's specially too, but is unable to recognize /dev/tty as it
-	only gets a file descriptor, and no name for it.
+	* unix/tclUnixFCmd.c (TclpObjNormalizePath): deal with *BSD/Darwin
+	realpath() converting relative paths into absolute paths [Bug 1064247]
 
-2002-02-26  Jeff Hobbs  <jeffh@ActiveState.com>
+2006-03-28  Vince Darley  <vincentdarley@sourceforge.net>
 
-	* generic/tclCmdAH.c (StoreStatData): corrected mem leak.
+	* generic/tclIOUtil.c: fix to nativeFilesystemRecord comparisons
+	(lesser part of [Bug 1064247])
 
-	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): prevent obj leak in remedial
-	regsub case.
+2006-03-27  Pat Thoyts	<patthoyts@users.sourceforge.net>
 
-	* generic/tclFileName.c (Tcl_TranslateFileName): decr refcount for
-	error case to prevent mem leak.
+	* win/tclWinTest.c:	Fixes for [Bug 1456373] (mingw-gcc issue)
 
-	* generic/tclVar.c (Tcl_ArrayObjCmd): removed extra obj allocation.
+2006-03-27  Andreas Kupries <andreask@activestate.com>
 
-	* unix/tclUnixSock.c (Tcl_GetHostName): added an extra gethostbyname
-	check to guard against failure with truncated names returned by uname.
+	* doc/CrtChannel.3:    Added TCL_CHANNEL_VERSION_5, made it the
+	* generic/tcl.h:       version where the "truncateProc" is defined at,
+	* generic/tclIO.c:     and moved all channel drivers of Tcl to v5.
+	* generic/tclIOGT.c, generic/tclIORChan.c, unix/tclUnixChan.c:
+	* unix/tclUnixPipe.c, win/tclWinChan.c, win/tclWinConsole.c:
+	* win/tclWinPipe.c, win/tclWinSerial.c, win/tclWinSock.c:
 
-	* unix/configure:
-	* unix/tcl.m4 (SC_SERIAL_PORT): added sys/modem.h check and defined
-	_XOPEN_SOURCE_EXTENDED for HP-11 to get updated header decls.
+2006-03-27  Don Porter	<dgp@users.sourceforge.net>
 
-	* unix/tclUnixChan.c: added Unix implementation of TIP #35, serial
-	port support. [Patch 438509] (schroedter)
+	* generic/tclExecute.c: Merge INST_MOD computation in with the
+	INST_?SHIFT instructions, which also operate only on two integral
+	values. Also corrected flaw that made INST_BITNOT of wide values
+	require mp_int calculations. Also corrected type that missed optimized
+	handling of the tclBooleanType by the TclGetBooleanFromObj macro.
 
-2002-02-26  Miguel Sofer  <msofer@users.sourceforge.net>
+	* changes:	Updates for another RC.
 
-	* generic/tclCmpCmds.c: (bugfix to the bugfix, hopefully the last)
-	Bugfix to the new [for] compiling code: was setting a exceptArray
-	parameter using another param which wasn't yet initialised, thus
-	filling it with noise.
+2006-03-25  Don Porter	<dgp@users.sourceforge.net>
 
-2002-02-25  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* generic/tclExecute.c: Corrections to INST_EXPON detection of
+	overflow to use mp_int calculations.
 
-	* mac/tclMacSock.c (TcpGetOptionProc): Changed to recognize the option
-	"-error". Essentially ignores the option, always returning an empty
-	string.
+2006-03-24  Kevin B. Kenny  <kennykb@acm.org>
 
-2002-02-25  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclExecute.c (TclExecuteByteCode): Added a couple of missing
+	casts to 'int' that were affecting compilablity on VC6.
 
-	* doc/Alloc.3:
-	* doc/LinkVar.3:
-	* doc/ObjectType.3:
-	* doc/PkgRequire.3:
-	* doc/Preserve.3:
-	* doc/TCL_MEM_DEBUG.3: Updated documentation to describe the ckalloc,
-	ckfree, ckrealloc, attemptckalloc, and attemptckrealloc macros, and
-	to accurately describe when and how they are used. [Bug 497459] (dgp)
+2006-03-24  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclHash.c (AllocArrayEntry, AllocStringEntry): Before
-	invoking ckalloc when creating a Tcl_HashEntry, check that the amount
-	of memory being allocated is at least as large as
-	sizeof(Tcl_HashEntry). The previous code was allocating memory regions
-	that were one or two bytes short. [Bug 521950] (dejong)
+	* generic/tclEncoding.c: Reverted latest change [Bug 506653] since it
+	reportedly killed test performance on Windows.
 
-2002-02-25  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclExecute.c: Revised INST_EXPON implementation to do
+	calculations in native types as much as possible, moving to mp_ints
+	only when necessary.
 
-	* generic/tclBasic.c (Tcl_EvalEx): avoiding a buffer overrun reported
-	by Joe English, and restoring tcl7.6 behaviour for [subst]: badly
-	terminated nested scripts will raise an error and not be evaluated.
-	[Bug 495207]
+2006-03-23  Don Porter	<dgp@users.sourceforge.net>
 
-2002-02-25  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclExecute.c: Merged INST_EXPON handling in with the other
+	binary operators that operate on all number types (INST_ADD, etc.).
 
-	* unix/tclUnixPort.h: corrected strtoll prototype mismatch on Tru64.
-	* compat/strtod.c (strtod): simplified #includes
-	* compat/strtol.c (strtol): gather result in a long before returning
-	as a long: necessary on platforms where sizeof(int) != sizeof(long).
+	* tests/env.test: With case preserved (see 2006-03-21 commit) be sure
+	to do case-insensitive filtering. [Bug 1457065]
 
-2002-02-25  Daniel Steffen  <das@users.sourceforge.net>
+2006-03-23  Reinhard Max  <max@suse.de>
 
-	* unix/tclLoadDyld.c: updated to use Mac OS X 10.1 dyld APIs that have
-	more libdl-like semantics. [Bug 514392]
+	* unix/tcl.spec: Cleaned up and completed the spec file. An RPM can
+	now be built from the tcl source distribution with "rpmbuild -tb
+	<tarball>"
 
-2002-02-25  Miguel Sofer  <msofer@users.sourceforge.net>
+2006-03-22  Reinhard Max  <max@suse.de>
 
-	* generic/tclCompCmds: fixing a bug in patch dated 2002-02-22, in the
-	code for [for] and [while]. Under certain conditions, for long bodies,
-	the exception range parameters were badly computed. Tests forthcoming:
-	I still can't reproduce the conditions in the testsuite (!), although
-	the bug (with assorted segfault or panic!) can be triggered from the
-	console or with the new parse.bench in tclbench.
+	* tests/stack.test: Run the stack tests in subshells, so that they are
+	reported as failed tests rather than bugs in the test suite if the
+	recursion causes a segfault.
 
-2002-02-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-03-21  Don Porter	<dgp@users.sourceforge.net>
 
-	* compat/strtoul.c, compat/strtol.c, compat/strtod.c: Added UCHAR,
-	CONST and #includes to clean up GCC output.
+	* changes:	Updates for another RC.
 
-2002-02-23  Don Porter  <dgp@users.sourceforge.net>
+	* generic/tclStrToD.c:	One of the branches of AccumulateDecimalDigit
+	* tests/parseExpr.test: did not. [Bug 1451233]
 
-	* compat/strtoull.c (strtoull):
-	* compat/strtoll.c (strtoll):
-	* compat/strtoul.c (strtoul): Fixed failure to handle leading sign
-	symbols '+' and '-' and '0X' and raise overflow errors. [Bug 440916]
-	Also corrects prototype and errno problems.
+	* tests/env.test:	Preserve case of saved env vars. [Bug 1409272]
 
-2002-02-23  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-03-21  Daniel Steffen  <das@users.sourceforge.net>
 
-	* configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Link with -n32 instead of -32 when
-	building on IRIX64-6.* system. [Bug 521707]
+	* generic/tclInt.decls:	 implement globbing for HFS creator & type
+	* macosx/tclMacOSXFCmd.c:codes and 'hidden' flag, as documented in
+	* tests/macOSXFCmd.test: glob.n; objectified OSType handling in [glob]
+	* unix/tclUnixFile.c:	 and [file attributes]; fix globbing for
+	hidden files with pattern==NULL arg. [Bug 823329]
+	* generic/tclIntPlatDecls.h:
+	* generic/tclStubInit.c: make genstubs
 
-2002-02-22  Don Porter <dgp@users.sourceforge.net>
+2006-03-20  Andreas Kupries <andreask@activestate.com>
 
-	* generic/tclInt.h:
-	* generic/tclObj.c: renamed global variable emptyString ->
-	tclEmptyString because it is no longer static.
-	* generic/tclPkg.c: Fix for panic when library is loaded on a
-	platform without backlinking without proper use of stubs. [Bug 476537]
+	* win/Makefile.in (install-libraries): Generate tcl8/8.4 directory
+	under Windows as well (cygwin Makefile). Related entry: 2006-03-07,
+	dgp. This moved the installation of http from 8.2 to 8.4, partially. A
+	fix of the required directory creation was done for unix on Mar 10,
+	without entry in the Changelog. This entry is for the fix of the
+	directory creation under Windows.
 
-2002-02-22  Jeff Hobbs  <jeffh@ActiveState.com>
+	* unix/installManPage: There is always one even more broken "sed".
+	Moved the # comment starting character in the sed script to the
+	beginning of their respective lines. The AIX sed will not recognize
+	them as comments otherwise :( The actual text stays indented for
+	better association with the commands they belong to.
 
-	* tests/regexpComp.test: updated regexp-11.[1-4] to match changes
-	in regexp.test for new regsub syntax
+2006-03-20  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* unix/configure:
-	* unix/tcl.m4: added --enable-64bit support for AIX-4 (using -q64
-	flag) when using IBM's xlc compiler.
+	* tests/cmdAH.test, tests/fCmd.test, tests/unixFCmd.test:
+	* tests/winFCmd.test: Cleanup of some test constraint handling, and a
+	few other minor issues.
 
-	* tests/safe.test: updated safe-8.5 and safe-8.7
-	* library/safe.tcl (CheckFileName): removed the limit on
-	sourceable file names (was only *.tcl or tclIndex files with no
-	more than one dot and 14 chars).  There is enough internal
-	protection in a safe interpreter already.  Fixes [Tk Bug 521560].
+2006-03-18  Vince Darley  <vincentdarley@sourceforge.net>
 
-2002-02-22  Miguel Sofer  <msofer@users.sourceforge.net>
+	* generic/tclFileName.c:
+	* doc/FileSystem.3:
+	* tests/fileName.test: Fix to [Bug 1084705] so that 'glob -nocomplain'
+	finally agrees with its documentation and doesn't swallow genuine
+	errors.
 
-	* generic/tclCompCmds: [FR 465811]. Optimising [if], [for] and
-	[while] for constant conditions; in addition, [for] and [while] are
-	now compiled with the "loop rotation" optimisation (thanks to Kevin
-	Kenny).
+	***POTENTIAL INCOMPATIBILITY*** for scripts that assumed '-nocomplain'
+	removes the need for 'catch' to deal with non-understood path names.
 
-2002-02-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	Small optimisation to implementation of pattern==NULL case of TclGlob,
+	and clarification to the documentation. [Tclvfs bug 1405317]
 
-	--- TIP#76 CHANGES ---
-	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): Final-argument-less
-	[regsub] returns the modified string.
-	* doc/regsub.n: Updated docs.
-	* tests/regexp.test: Updated and added tests.
+2006-03-18  Vince Darley  <vincentdarley@sourceforge.net>
 
-	* compat/strtoll.c (strtoll):
-	* compat/strtoull.c (strtoull):
-	* unix/tclUnixPort.h:
-	* win/tclWinPort.h: Const-ing 64-bit compatability declarations.
-	Note that the return pointer is non-const because it is entirely
-	legal for the functions to be called from somewhere that owns the
-	string being passed.  Fixes problem reported by Larry Virden.
+	* tests/fCmd.test: added knownBug test case for [Bug 1394972]
 
-2002-02-21  David Gravereaux <davygrvy@pobox.com>
+	* tests/winFCmd.test:
+	* tests/tcltest.test: corrected tests to better account for behaviour
+	of writable/non-writable directories on Windows 2000/XP. This, with
+	the previous patches, closes [Bug 1193497]
 
-	* win/mkd.bat (removed):
-	* win/coffbase.txt (new):
-	* win/makefile.bc:
-	* win/makefile.vc:  Changed the 'setup' target to stop using the
-	mkd.bat file and just make the directory right in the rule. Same
-	change to makefile.bc. configure.in nor Makefile.in use it.
+2006-03-17  Andreas Kupries <andreask@activestate.com>
 
-	coffbase.txt will be the master list for our "prefered base addresses"
-	set by the linker. This should improve load-time (NT only) by avoiding
-	relocations. Submissions to the list by extension authors are
-	encouraged.
+	* doc/chan.n: Updated with documentation for the commands 'chan
+	create' and 'chan postevent' (TIP #219).
 
-	Added a 'tidy' target to compliment 'clean' and 'hose' to remove just
-	the outputs. Also removed the $(winlibs) macro as it wasn't being
-	used.
+	* doc/refchan.n: New file. Documentation of the command handler API
+	for reflected channels (TIP #219).
 
-	Stuff left to do:
-	1) get the winhelp target to stop building in the tools/ directory.
-	2) stop using rmd.bat
-	3) add more dependacy rules.
+2006-03-17  Joe Mistachkin <joe@mistachkin.com>
 
-	* win/tclAppInit.c: Reverted back to -r1.6, as the header file change
-	to tclPort.h won't allow for easy embedded support outside of the
-	source dist. Thanks to Don Porter for pointing this out to me.
+	* unix/tclUnixPort.h: Include pthread.h prior to pthread_np.h [Bug
+	1444692]
 
-2002-02-21  David Gravereaux <davygrvy@pobox.com>
+	* win/tclWinTest.c: Corrected typo of 'initializeMutex' that prevented
+	successful compilation.
 
-	* win/makefile.vc:
-	* win/rules.vc: Added a new "loimpact" option that sets the
-	-ws:aggressive linker option. Off by default. It's said to keep the
-	heap use low at the expense of alloc speed.
+2006-03-16  Andreas Kupries <andreask@activestate.com>
 
-	* win/tclAppInit.c: Changed #include "tcl.h" to be tclPort.h to remove
-	the raw windows.h include. tclPort.h brings in windows.h already and
-	lessens the pre-compiled-header mush and the randomly useless #pragma
-	comment (lib,...) references throughout the big windows.h tree (as
-	observed at high linker warning levels).
+	* doc/open.n: Documented the changed behaviour of 'a'ppend mode.
 
-2002-02-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* tests/io.test (io-43.1 io-44.[1234]): Rewritten to be self-contained
+	with regard to setup and cleanup. [Bug 681793]
 
-	* generic/tcl.h: Better guessing of LP64/ILP32 architecture, but
-	now sensitive to presence of (suitable) <limits.h>
+	* generic/tclIOUtil.c (TclGetOpenMode): Added the flag O_APPEND to the
+	list of POSIX modes used when opening a file for 'a'ppend. This
+	enables the proper automatic seek-to-end-on-write by the OS. See [Bug
+	680143] for longer discussion.
 
-2002-02-20  Don Porter <dgp@users.sourceforge.net>
+	* tests/ioCmd.test (iocmd-13.7.*): Extended the testsuite to check the
+	new handling of 'a'.
 
-	* generic/tcl.decls (Tcl_RegExpRange,Tcl_GetIndexFromObjStruct):
-	Overlooked a few source incompatibilities.  Now using CONST84.
-	* generic/tclDecls.h: make genstubs
-	* generic/tcl.h (Tcl_CmdObjTraceProc): silence warning from Sun
-	Workshop compiler.
+2006-03-15  Andreas Kupries <andreask@activestate.com>
 
-2002-02-20  David Gravereaux <davygrvy@pobox.com>
+	* tests/socket.test: Extended the timeout in socket-11.11 from 10 to
+	40 seconds to allow for really slow machines. Also extended
+	actual/expected results with value of variable 'done' to make it
+	clearer when a test fails due to a timeout. [Bug 792159]
 
-	* win/buildall.vc.bat:
-	* win/makefile.vc:
-	* win/rules.vc: General clean-ups. Added compiler and linker tests for
-	a) the pentium 0x0F errata, b) optimizing (not all have this), and c)
-	linker v6 section alignment confusion. All these are tested first to
-	make sure any D4002 or LNK1117 warnings aren't displayed. The pentium
-	0x0F errata is a recommended switch. The v5 linker's section alignment
-	default is 512, but the v6 linker was changed to 4096 in an attempt to
-	speed loading on Win98. I changed the default to always be 512 across
-	both linkers, unless linking statically, then 4096 is used for the
-	claimed speed effect. Using a 512 alignment saves 12k bytes of dead
-	space in the DLL.
+2006-03-15  Vince Darley  <vincentdarley@sourceforge.net>
 
-	Added IA64 B-stepping errata switch when the compiler supports it.
+	* win/fCmd.test: add proper test constraints so the new tests don't
+	run on Unix.
 
-	Added profiling to $(lflags) when requested and also removed the
-	explict -entry option as the default works fine as is.
+2006-03-14  Andreas Kupries <andreask@activestate.com>
 
-	Removed win/tclWinInit.c from the special case section to let it use
-	the common implicit rule as the $(EXTFLAGS) macro it had was never
-	referenced anywhere.
+	* generic/tclPipe.c (TclCreatePipeline): Modified the processing of
+	pipebars to fail if the last bar is followed only by redirections.
+	[Bug 768659]
 
-2002-02-20  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-03-14  Andreas Kupries <andreask@activestate.com>
 
-	* generic/tcl.h: Added code to guess the correct settings for
-	TCL_WIDE_INT_IS_LONG and TCL_WIDE_INT_TYPE when configure doesn't tell
-	us them, as can happen with extensions.
+	* doc/fconfigure.n: Clarified that -translation is binary is reported
+	as lf when queried, because it is identical to lf, except for the
+	special additional behaviour when setting it. [Bug 666770]
 
-2002-02-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-03-14  Andreas Kupries <andreask@activestate.com>
 
-	* doc/format.n: Updated docs to list the specification.
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Made behaviour on 64-bit
-	platforms correctly meet the specification, that %d works with the
-	native word-sized integer, instead of trying to guess (wrongly) from
-	the value being passed.
+	* doc/clock.n: Removed double-quotes around section title NAME; not
+	needed.
+	* unix/installManpage: Reverted part to handle double-quotes in
+	section NAME, chokes older sed installations.
 
-2002-02-19  Don Porter <dgp@users.sourceforge.net>
+2006-03-14  Andreas Kupries <andreask@activestate.com>
 
-	* changes: First draft of updated changes for 8.4a4 release.
+	* library/tm.tcl (::tcl::tm::Defaults): Fixed handling of environment
+	variable TCLX.y_TM_PATH, bad variable reference. Thanks to Julian
+	Noble. [Bug 1448251]
 
-2002-02-15  Jeff Hobbs  <jeffh@ActiveState.com>
+2006-03-14  Vince Darley  <vincentdarley@sourceforge.net>
 
-	* unix/tclUnixPort.h: add strtoll/strtoull declarations for platforms
-	that do not define them.
+	* win/tclWinFile.c: updated patch to deal with 'file writable' issues
+	on Windows XP/2000.
+	* generic/tclTest.c:
+	* unix/tclUnixTest.c:
+	* win/tclWinTest.c:
+	* tests/fCmd.test: updated test suite to deal with correct permissions
+	setting and differences between XP/2000 and 95/98 3 tests still fail;
+	to be dealt with shortly
 
-	* generic/tclIndexObj.c (STRING_AT): removed ptrdiff_t cast and use of
-	VOID* in default case (GNU-ism).
+2006-03-13  Don Porter	<dgp@users.sourceforge.net>
 
-2002-02-15  Kevin Kenny  <kennykb@acm.org>
+	* generic/tclEncoding.c: Report error when an escape encoding is
+	missing one of its sub-encodings. [Bug 506653]
 
-	* compat/strtoll.c:
-	* compat/strtoul.c:
-	* compat/strtoull.c:
-	* generic/tclIOUtil.c:
-	* generic/tclPosixStr.c:
-	* generic/tclTest.c:
-	* generic/tclTestObj.c:
-	* tests/get.test:
-	* win/Makefile.vc: Further tweaks to the TIP 72 patch to make it
-	compile under VC++.
-
-2002-02-15  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
-
-	* tclExecute.c:
-	* tclIOGT.c:
-	* tclIndexObj.c: Touchups to the TIP 72 patch to make it compileable
-	under Windows again. The changes are not complete, there is one nasty
-	regarding _stati64
-
-2002-02-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
-
-	+----------------------+
-	| TIP #72 IMPLEMENTED. |
-	+----------------------+
-
-	There are a lot of changes from this TIP, so please see
-	http://tip.tcl.tk/72.html for discussion of backward-compatability
-	issues, but the main ones modifications are in:
-
-	* generic/tcl.h: New types.
-	* generic/tcl.decls: New public functions.
-	* generic/tclExecute.c: 64-bit aware bytecode engine.
-	* generic/tclBinary.c: 64-bit handling in [binary] command.
-	* generic/tclScan.c: 64-bit handling in [scan] command.
-	* generic/tclCmdAH.c: 64-bit handling in [file] and [format]
-	commands.
-	* generic/tclBasic.c: New "wordSize" entry in ::tcl_platform.
-	* generic/tclFCmd.c: Large-file support (with many consequences.)
-	* generic/tclIO.c: Large-file support (with many consequences.)
-	* compat/strtoll.c, compat/strtoull.c: New support functions.
-	* unix/tcl.m4, unix/configure: 64-bit support and greatly enhanced
-	cacheing.
-
-	Most other changes, including all those in doc/* and test/* as well as
-	the majority in the platform directories, follow on from these.
-
-	Also coming out of the woodwork:
-	* generic/tclIndex.c: Better support for Cray PVP.
-	* win/tclWinMtherr.c: Better Borland support.
-
-	Note that, in a number of places through the Unix part of the platform
-	support, there are Tcl_Platform* references. These are expanded into
-	the correct way to call that particular underlying function, i.e. with
-	or without a '64' suffix, and should be used by people working on the
-	core in preference to the API functions they overlay so that the code
-	remains portable depending on the presence or absence of 64-bit
-	support on the underlying platform.
-
-	***POTENTIAL INCOMPATIBILITY***: Extracted from the TIP
-
-	SUMMARY OF INCOMPATIBILITIES AND FIXES
-	======================================
-
-	The behaviour of expressions containing constants that appear positive
-	but which have a negative internal representation will change, as
-	these will now usually be interpreted as wide integers. This is always
-	fixable by replacing the constant with int(constant).
-
-	Extensions creating new channel types will need to be altered as
-	different types are now in use in those areas. The change to the
-	declaration of Tcl_FSStat and Tcl_FSLstat (which are the new preferred
-	API in any case) are less serious as no non-alpha releases have been
-	made yet with those API functions.
-
-	Scripts that are lax about the use of the l modifier in format and
-	scan will probably need to be rewritten. This should be very uncommon
-	though as previously it had absolutely no effect.
-
-	Extensions that create new math functions that take more than one
-	argument will need to be recompiled (the size of Tcl_Value changes),
-	and functions that accept arguments of any type (TCL_EITHER) will need
-	to be rewritten to handle wide integer values. (I do not expect this
-	to affect many extensions at all.)
-
-2002-02-14  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
-
-	* generic/tclIOCmd.c (Tcl_GetsObjCmd): Trivial fix for [Bug 517503], a
-	memory leak reported by Miguel Sofer <msofer@users.sourceforge.net>.
-	The leak happens if an error occurs for "set var [gets $chan]" and
-	leak one empty object.
-
-2002-02-12  David Gravereaux <davygrvy@pobox.com>
-
-	* djgpp/ (new directory)
-	* djgpp/Makefile (new):
-	* unix/tclAppInit.c:
-	* unix/tclMtherr.c:
-	* unix/tclUnixFCmd.c:
-	* unix/tclUnixFile.c:
-	* unix/tclUnixInit.c:
-	* unix/tclUnixPort.h:  Early stage of DJGPP support for building Tcl
-	on DOS. Dynamic loading isn't working, yet. Requires watt32 for the
-	TCP/IP stack. No autoconf, yet. Barely tested, but makes a working exe
-	that runs Tcl in protected-mode, flat memory. [exec] and pipes will
-	need the most work as multi-tasking on DOS has to be carefully.
+	* unix/configure.in:	Revert change from 2005-07-26 that sometimes
+	* unix/configure:	added $prefix/share to the tcl_pkgPath. See
+	[Patch 1231015]. autoconf-2.59.
 
-2002-02-10  Kevin Kenny  <kennykb@acm.org>
+2006-03-10  Miguel Sofer  <msofer@users.sf.net>
 
-	* doc/CrtObjCmd.3:
-	* doc/CrtTrace.3:
-	* generic/tcl.decls:
-	* generic/tcl.h:
-	* generic/tclBasic.c:
-	* generic/tclInt.h:
-	* generic/tclTest.c:
-	* tests/basic.test: Added Tcl_CreateObjTrace,
-	Tcl_GetCommandInfoFromToken and Tcl_SetCommandInfoFromToken.
-	(TIPs #32 and #79.)
+	* generic/tclProc.c (ObjInterpProcEx):
+	* tests/apply.test (apply-5.1): Fix [apply] error messages so that
+	they quote the lambda expression. [Bug 1447355]
 
-	* generic/tclDecls.h:
-	* generic/tclStubInit.c: Regenerated Stubs tables.
+2006-03-10  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
 
-2002-02-08  Jeff Hobbs  <jeffh@ActiveState.com>
+	-- Summary of changes fixing [Bug 1437595] --
 
-	* unix/configure:
-	* unix/tcl.m4: added -pthread for FreeBSD to EXTRA_CFLAGS and
-	LDFLAGS.  Also triggered nodots only for FreeBSD-3.
-	Added AC_DEFINE(_POSIX_PTHREAD_SEMANTICS) for Solaris.
+	* generic/tclEvent.c: Cosmetic touches and identation
+	* generic/tclInt.h: Added TclpFinalizeSockets() call.
 
-	* unix/tclUnixPort.h:
-	* unix/tclUnixThrd.c: added thread-safe versions of readdir,
-	localtime, gmtime and inet_ntoa for threaded build. (jgdavidson)
+	* generic/tclIO.c: Calls TclpFinalizeSockets() as part of the
+	TclFinalizeIOSubsystem().
 
-	* generic/tclScan.c (Tcl_ScanObjCmd): prevented ckfree being
-	called on a pointer to NULL.
+	* unix/tclUnixSock.c: Added no-op TclpFinalizeSockets().
 
-2002-02-07  Don Porter <dgp@users.sourceforge.net>
+	* win/tclWinPipe.c, win/tclWinSock.c: Finalization of sockets/pipes is
+	now solely done in TclpFinalizeSockets() and TclpFinalizePipes() and
+	not over the thread-exit handler, because the order of actions the Tcl
+	generic core will impose may result in cores/hangs if the thread exit
+	handler tears down corresponding subsystem(s) too early.
 
-	* doc/DString.3:
-	* doc/Encoding.3:
-	* doc/GetCwd.3:
-	* doc/SplitPath.3:
-	* doc/Translate.3:
-	* doc/Utf.3:
-	* generic/tcl.decls:
-	* generic/tcl.h:
-	* generic/tclEncoding.c:
-	* generic/tclEnv.c:
-	* generic/tclFileName.c:
-	* generic/tclIOUtil.c:
-	* generic/tclUtf.c:
-	* generic/tclUtil.c:
-	* mac/tclMacInit.c:
-	* unix/tclUnixFile.c:
-	* unix/tclUnixInit.c:
-	* unix/tclUnixPipe.c:
-	* win/tclWin32Dll.c:
-	* win/tclWinFCmd.c:
-	* win/tclWinFile.c:
-	* win/tclWinInit.c: Partial TIP 27 rollback.  Following routines
-	restored to return (char *): Tcl_DStringAppend,
-	Tcl_DStringAppendElement, Tcl_JoinPath, Tcl_TranslateFileName,
-	Tcl_ExternalToUtfDString, Tcl_UtfToExternalDString,
-	Tcl_UniCharToUtfDString, Tcl_GetCwd, Tcl_WinTCharToUtf. Also
-	restored Tcl_WinUtfToTChar to return (TCHAR *) and
-	Tcl_UtfToUniCharDString to return (Tcl_UniChar *).  Modified
-	some callers.  This change recognizes that Tcl_DStrings are
-	de-facto white-box objects.
+2006-03-10  Vince Darley  <vincentdarley@sourceforge.net>
 
-	* generic/tclDecls.h:
-	* generic/tclPlatDecls.h: make genstubs
+	* win/tclWinFile.c: previous patch breaks tests, so removed.
 
-	* generic/tclCmdMZ.c: corrected use of C++-style comment.
+2006-03-09  Vince Darley  <vincentdarley@sourceforge.net>
 
-2002-02-06  Jeff Hobbs  <jeffh@ActiveState.com>
+	* win/tclWinFile.c: fix to 'file writable' in certain XP directories.
+	Thanks to fvogel and jfg. [Patch 1344540] Modified patch to make use
+	of existing use of getSecurityProc.
 
-	* tests/scan.test:
-	* generic/tclScan.c (Tcl_ScanObjCmd): corrected scan 0x... %x handling
-	that didn't accept the 0x as a prelude to a base 16 number. [Bug
-	495213]
+2006-03-08  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclCompCmds.c (TclCompileRegexpCmd): made early check
-	for bad RE to stop checking further.
+	* generic/tclExecute.c: Complete missing bit of TIP 215 implementation
+	* tests/incr.test:
 
-	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): added special case to
-	search for simple 'string map' style regsub calls.
-	Delayed creation of resultPtr object until an initial match is
-	made, as the input string object can then be reused for no matches.
-	(Tcl_StringObjCmd): optimization improvements to the STR_MAP
-	algorithm for zero-length and nocase cases.
+2006-03-07  Joe English	 <jenglish@users.sourceforge.net>
 
-	* tests/regexp.test:
-	* tests/regexpComp.test: extra code coverage tests.
+	* unix/tcl.m4: Set SHLIB_LD_FLAGS='${LIBS}' on NetBSD, as per the
+	other *BSD variants. [Bug 1334613]
+	* unix/configure: Regenerated.
 
-	* tests/string.test: added 10.18 and 10.19 extra tests.
+2006-03-07  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/regc_locale.c (casecmp): slight performance improvement.
+	* changes:	Update in prep. for 8.5a4 release.
 
-2002-02-05  Don Porter <dgp@users.sourceforge.net>
+	* unix/Makefile.in:	Package http 2.5.2 requires Tcl 8.4, so the
+	* win/Makefile.in:	*.tm installation has to be placed in an "8.4"
+	directory, not an "8.2" directory.
 
-	* library/http/http.tcl:
-	* library/http/pkgIndex.tcl:  Corrected use of http::error when
-	::error was intended.  Bump to http 2.4.2.
+2006-03-06  Don Porter	<dgp@users.sourceforge.net>
 
-2002-02-04  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* generic/tclBasic.c:	Revised handling of TCL_EVAL_* flags to
+	* tests/parse.test:	simplify TclEvalObjvInternal and to correct
+	the auto-loading of alias targets (parse-8.12). [Bug 1444291]
 
-	* unix/tclUnixChan.c (FileOutputProc): Fixed [bug 465765] reported by
-	Dale Talcott <daletalcott@users.sourceforge.net>. Avoid writing
-	nothing into a file as STREAM based implementations will consider this
-	a EOF (if the file is a pipe). Not done in the generic layer as this
-	type of writing is actually useful to check the state of a socket.
+2006-03-03  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/open.n: Fixed [Bug 511540], added cross-reference to 'pid' as
-	the command to use to retrieve the pid of a command pipeline created
-	via 'open'.
+	* generic/tclPathObj.c: Revised yesterday's fix for [Bug 1379287] to
+	work on Windows.
 
-2002-02-01  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclObj.c:	Compatibility support for existing code that
+	calls Tcl_GetObjType("boolean").
 
-	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): handle quirky about case
-	earlier to avoid shimmering problem.
+2006-03-02  Don Porter	<dgp@users.sourceforge.net>
 
-2002-02-01  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* generic/tclPathObj.c:		Fix for failed normalization of paths
+	* tests/fileSystem.test:	with /../ that lead back to the root
+	of the filesystem, like /foo/.. [Bug 1379287]
 
-	* tests/io.test: io-39.22 split into two tests, one platform
-	dependent, the other not. -eofchar is not empty on the windows
-	platform.
+2006-03-01  Reinhard Max  <max@suse.de>
 
-2002-02-01  Vince Darley <vincentdarley@users.sourceforge.net>
+	* unix/installManPage: Fix the script for manpages that have quotes
+	around the .SH arguments, as doctools produces them. [Bug 1292145]
+	Some minor cleanups and improvements.
 
-	* generic/tclTest.c: fix to picky windows compiler problem with the
-	'MainLoop' function declaration.
+2006-02-28  Don Porter	<dgp@users.sourceforge.net>
 
-2002-01-31  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* generic/tclBasic.c:	Corrections to be sure that TCL_EVAL_GLOBAL
+	* tests/namespace.test: evaluations act the same as [uplevel #0]
+	* tests/parse.test:	evaluations, even when execution traces or
+	* tests/trace.test:	invocations of [::unknown] are present. [Bug
+	1439836]
 
-	* win/tclWinFCmd.c: TIP 27: Applied patch fixing CONST warnings on
-	behalf of Don Porter <dgp@users.sourceforge.net>.
+2006-02-22  Don Porter	<dgp@users.sourceforge.net>
 
-2002-01-30  Don Porter <dgp@users.sourceforge.net>
+	* generic/tclBasic.c:	Corrected a few bugs in how [namespace
+	* tests/namespace.test: unknown] interacts with TCL_EVAL_* flags.
+	[Patch 958222]
 
-	* generic/tcl.decls:
-	* generic/tcl.h:
-	* generic/tclInt.h: For each interface identified in the TIP 27
-	changes below as a POTENTIAL INCOMPATIBILITY, the source of the
-	incompatibility has been parameterized so that it can be removed. When
-	compiling extension code against the Tcl header files, use the
-	compiler flag -DUSE_NON_CONST to remove the irresolvable source
-	incompatibilities introduced by the TIP 27 changes. Resolvable changes
-	are left for extension authors to resolve.
-	* generic/tclDecls.h: make genstubs
+2006-02-17  Don Porter	<dgp@users.sourceforge.net>
 
-2002-01-30  Vince Darley <vincentdarley@users.sourceforge.net>
+	* generic/tclIORChan.c: Revised error message generation and handling
+	* tests/ioCmd.test:	of exceptional return codes in the channel
+	reflection layer. [Bug 1372348]
 
-	* doc/FileSystem.3: added documentation for 3 public functions which
-	had been overlooked. Fixes [Bug 507701]
-	* unix/mkLinks: make mklinks
+2006-02-16  Don Porter	<dgp@users.sourceforge.net>
 
-2002-01-29  Jeff Hobbs  <jeffh@ActiveState.com>
+	* generic/tclIndexObj.c:	Disallow the "ambiguous" error message
+	* tests/indexObj.test:		when TCL_EXACT matching is requested.
+	* tests/ioCmd.test:
 
-	* tests/regexpComp.test:
-	* generic/tclCompCmds.c (TclCompileRegexpCmd): enhanced to support
-	-nocase and -- options.
+2006-02-15  Don Porter	<dgp@users.sourceforge.net>
 
-2002-01-28  Mo DeJong  <mdejong@users.sourceforge.net>
+	* generic/tclIO.c:	Made several routines tolerant of
+	* generic/tclIORChan.c: interp == NULL arguments. [Bug 1380662]
+	* generic/tclIOUtil.c:
 
-	* unix/tcl.m4 (SC_LOAD_TCLCONFIG):
-	* win/tcl.m4 (SC_LOAD_TCLCONFIG): Set TCL_LIB_SPEC, TCL_STUB_LIB_SPEC,
-	and TCL_STUB_LIB_PATH to the values of TCL_BUILD_LIB_SPEC,
-	TCL_BUILD_STUB_LIB_SPEC, and TCL_BUILD_STUB_LIB_PATH when tclConfig.sh
-	is loaded from the build directory. A Tcl extension should make use of
-	the non-build versions of these variables since they will work in both
-	cases. This modification was described in TIP #34.
+2006-02-09  Don Porter	<dgp@users.sourceforge.net>
 
-2002-01-28  Jeff Hobbs  <jeffh@ActiveState.com>
+	TIP#215 IMPLEMENTATION
 
-	* win/tclWinReg.c (regConnectRegistryProc,RecursiveDeleteKey)
-	(DeleteKey,GetKeyNames,GetType,GetValue,OpenSubKey,SetValue):
-	redid the CONSTification as previous changes caused failing tests.
+	* doc/incr.n:		Revised [incr] to auto-initialize when varName
+	* generic/tclExecute.c: argument is unset. [Patch 1413115]
+	* generic/tclVar.c:
+	* tests/compile.test:
+	* tests/incr-old.test:
+	* tests/incr.test:
+	* tests/set.test:
+
+	* tests/main.test (Tcl_Main-6.7):	Improved robustness of
+	command auto-completion test. [Bug 1422736]
+
+2006-02-08  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/Encoding.3, doc/encoding.n: Updates due to review at request of
+	Don Porter. Mostly minor changes.
+
+2006-02-08  Don Porter	<dgp@users.sourceforge.net>
+
+	TIP#258 IMPLEMENTATION
+
+	* doc/Encoding.3:	New subcommand [encoding dirs].
+	* doc/encoding.n:	New routine Tcl_GetEncodingNameFromEnvironment
+	* generic/tcl.decls:	Made public:
+	* generic/tclBasic.c:	TclGetEncodingFromObj
+	* generic/tclCmdAH.c:		-> Tcl_GetEncodingFromObj
+	* generic/tclEncoding.c:TclGetEncodingSearchPath
+	* generic/tclInt.decls:		-> Tcl_GetEncodingSearchPath
+	* generic/tclInt.h:	TclSetEncodingSearchPath
+	* generic/tclTest.c:		-> Tcl_SetEncodingSearchPath
+	* library/init.tcl:	Removed commands:
+	* tests/cmdAH.test:		[tcl::unsupported::EncodingDirs]
+	* tests/encoding.test:		[testencoding path] (Tcltest)
+	* unix/tclUnixInit.c:	[Patch 1413934]
+	* win/tclWinInit.c:
 
-	* tests/regexpComp.test (new):
-	* generic/tclInt.h:
-	* generic/tclBasic.c: added TclCompileRegexpCmd entry
-	* generic/tclCompCmds.c (TclCompileStringCmd): corrected to return
-	TCL_OUT_LINE_COMPILE instead of TCL_ERROR for parsing errors, so
-	it only throws the error for runtime compile, in case the user
-	modifies 'string'.
-	(TclCompileRegexpCmd): first try at a byte-compiled regexp
-	command.  It handles static strings and ^$ bounded static strings.
-	(TclCompileAppendCmd): made TclPushVarName call always use
-	TCL_CREATE_VAR as numWords is always > 2 at that point.
+	* generic/tclDecls.h:	make genstubs
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
 
-	* generic/tclExecute.c (TclExecuteByteCode:INST_LIST): correct
-	possibly dangerous decr in macro call.
+2006-02-01  Miguel Sofer  <msofer@users.sf.net>
 
-	* win/tclWinInit.c (TclpFindVariable): CONSTification touch-up
+	* generic/tclProc.c: minor improvements to [apply]
+	* tests/apply.test: new tests; apply-5.1 currently fails to indicate
+	missing work in error reporting
 
-	* win/tclWinReg.c (OpenSubKey): corrected bug introduced in
-	CONSTification that dropped pointer reference.
+2006-02-01  Don Porter	<dgp@users.sourceforge.net>
 
-	* ChangeLog.2000 (new file):
-	* ChangeLog: broke changes from 2000 into ChangeLog.2000 to reduce
-	size of the main ChangeLog.
+	TIP#194 IMPLEMENTATION
 
-2002-01-28  David Gravereaux <davygrvy@pobox.com>
+	* doc/apply.n:	(New file)	New command [apply]. [Patch 944803]
+	* doc/uplevel.n:
+	* generic/tclBasic.c:
+	* generic/tclInt.h:
+	* generic/tclProc.c:
+	* tests/apply.test: (New file)
+	* tests/proc-old.test:
+	* tests/proc.test:
 
-	* generic/tclPlatDecls.h: Added preprocessor logic to force a typedef
-	of TCHAR when __STDC__ is defined when using the uncommon -Za compiler
-	switch with the microsoft compiler.
+	TIP#181 IMPLEMENTATION
 
-2002-01-27  Don Porter <dgp@users.sourceforge.net>
+	* doc/Namespace.3:	New command [namespace unknown]. New public C
+	* doc/namespace.n:	routines Tcl_(Get|Set)NamespaceUnknownHandler.
+	* doc/unknown.n:	[Patch 958222]
+	* generic/tcl.decls:
+	* generic/tclBasic.c:
+	* generic/tclInt.h:
+	* generic/tclNamesp.c:
+	* tests/namespace.test:
 
-	* doc/package.n: Documented global namespace context for script
-	evaluation by [package require].
+	* generic/tclDecls.h:	make genstubs
+	* generic/tclStubInit.c:
 
-2002-01-27  Daniel Steffen  <das@users.sourceforge.net>
+	TIP#250 IMPLEMENTATION
 
-	* generic/tclInt.decls:
-	* generic/tclIntPlatDecls.h:
-	* mac/tclMacChan.c:
-	* mac/tclMacFCmd.c:
-	* mac/tclMacFile.c:
-	* mac/tclMacInit.c:
-	* mac/tclMacLoad.c:
-	* mac/tclMacResource.c:
-	* mac/tclMacSock.c: TIP 27 CONSTification induced changes
-
-	* tests/event.test:
-	* tests/main.test: added catches/constraints to test that use features
-	that don't exist on the mac.
-
-2002-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	Make -eofchar and -translation options read only for server sockets.
-	[Bug 496733]
-
-	* generic/tclIO.c (Tcl_GetChannelOption, Tcl_SetChannelOption):
-	Instead of returning nothing for the -translation option on a server
-	socket, always return "auto". Return the empty string enclosed in
-	quotes for the -eofchar option on a server socket. Fixup -eofchar
-	usage message so that it matches the implementation.
-	* tests/io.test: Add -eofchar tests and -translation tests to ensure
-	options are read only on server sockets.
-	* tests/socket.test: Update tests to account for -eofchar and
-	-translation option changes.
-
-2002-01-25  Don Porter <dgp@users.sourceforge.net>
-
-	* compat/strstr.c (strstr):
-	* generic/tclCmdAH.c (Tcl_FormatObjCmd):
-	* generic/tclCmdIL.c (InfoNameOfExecutableCmd):
-	* generic/tclEnv.c (ReplaceString):
-	* generic/tclFileName.c (ExtractWinRoot):
-	* generic/tclIO.c (FlushChannel,Tcl_BadChannelOption):
-	* generic/tclStringObj.c (AppendUnicodeToUtfRep):
-	* generic/tclThreadTest.c (TclCreateThread):
-	* generic/tclUtf.c (Tcl_UtfPrev):
-	* mac/tclMacFCmd.c (TclpObjListVolumes):
-	* mac/tclMacResource.c (TclMacRegisterResourceFork)
-	(BuildResourceForkList):
-	* win/tclWinInit.c (AppendEnvironment): Sought out and eliminated
-	instances of CONST-casting that are no longer needed after the
-	TIP 27 effort.
-
-	* Following is [Patch 501006]
-	* generic/tclInt.decls (Tcl_AddInterpResolvers, Tcl_Export)
-	(Tcl_FindNamespace, Tcl_GetInterpResolvers, Tcl_ForgetImport)
-	(Tcl_Import, Tcl_RemoveInterpResolvers):
-	* generic/tclNamesp.c (Tcl_Export, Tcl_Import, Tcl_ForgetImport)
-	(Tcl_FindNamespace):
-	* generic/tclResolve.c (Tcl_AddInterpResolvers,Tcl_GetInterpResolvers,
-	(Tcl_RemoveInterpResolvers): Updated APIs in generic/tclResolve.c and
-	generic/tclNamesp.c according to the guidelines of TIP 27.
-	* generic/tclIntDecls.h: make genstubs
-
-	* Following is [Patch 505630]
-	* doc/AddErrorInfo.3:
-	* generic/tcl.decls (Tcl_LogCommandInfo):
-	* generic/tclBasic.c (Tcl_LogCommandInfo): Updated interfaces
-	of generic/tclBasic.cc according to TIP 27.
-	* generic/tclDecls.h: make genstubs
-
-	* Following is [Patch 506818]
-	* doc/Hash.3:
-	* generic/tcl.decls (Tcl_HashStats):
-	* generic/tclHash.c (Tcl_HashStats):  Updated APIs of generic/tclHash.c
-	according to guidelines of TIP 27.
-	* generic/tclDecls.h: make genstubs
-	* generic/tclVar.c (Tcl_ArrayObjCmd): Updated callers.
-
-	* Following is [Patch 506807]
-	* doc/ObjectType.3:
-	* generic/tcl.decls (Tcl_GetObjType):
-	* generic/tclObj.c (Tcl_GetObjType): Updated APIs of generic/tclObj.c
-	according to guidelines of TIP 27.
-	* generic/tclDecls.h: make genstubs
-
-	* Following is [Patch 507304]
-	* doc/Encoding.3:
-	* generic/tcl.decls (Tcl_WinUtfToTChar,Tcl_WinTCharToUtf):
-	* win/tclWin32Dll.c (Tcl_WinUtfToTChar,Tcl_WinTCharToUtf):
-	Updated interfaces in win/tclWin32Dll.c according to TIP 27.
-	* generic/tclPlatDecls.h: make genstubs
-	* generic/tclIOUtil.c (TclpNativeToNormalized):
-	* win/tclWinFCmd.c (TclpObjNormalizePath):
-	* win/tclWinFile.c (TclpFindExecutable,TclpMatchInDirectory)
-	(NativeIsExec,NativeStat):
-	* win/tclWinLoad.c (TclpLoadFile):
-	* win/tclWinPipe.c (TclpOpenFile,ApplicationType):
-	* win/tclWinReg.c (regConnectRegistryProc,RecursiveDeleteKey,DeleteKey)
-	(GetKeyNames,GetType,GetValue,OpenSubKey,SetValue):
-	* win/tclWinSerial.c (SerialSetOptionProc): Update callers.
-
-	* Following is [Patch 505072]
-	* doc/Concat.3:
-	* doc/Encoding.3:
-	* doc/Filesystem.3:
-	* doc/Macintosh.3:
-	* doc/OpenFileChnl.3
-	* doc/SetResult.3:
-	* doc/SetVar.3:
-	* doc/SplitList.3:
-	* doc/SplitPath.3:
-	* doc/Translate.3:
-	* generic/tcl.h (Tcl_FSMatchInDirectoryProc):
-	* generic/tclInt.h (TclpMatchInDirectory):
-	* generic/tcl.decls (Tcl_Concat,Tcl_GetStringResult,Tcl_GetVar,
-	(Tcl_GetVar2,Tcl_JoinPath,Tcl_Merge,Tcl_OpenCommandChannel,Tcl_SetVar)
-	(Tcl_SetVar2,Tcl_SplitList,Tcl_SplitPath,Tcl_TranslateFileName)
-	(Tcl_ExternalToUtfDString,Tcl_GetEncodingName,Tcl_UtfToExternalDString)
-	(Tcl_GetDefaultEncodingDir,Tcl_SetDefaultEncodingDir)
-	(Tcl_FSMatchInDirectory,Tcl_MacEvalResource,Tcl_MacFindResource):
-	* generic/tclInt.decls (TclCreatePipeline,TclGetEnv,TclpGetCwd,
-	(TclpCreateProcess):
-	* mac/tclMacFile.c (TclpGetCwd):
-	* generic/tclEncoding.c (Tcl_GetDefaultEncodingDir)
-	(Tcl_SetDefaultEncodingDir,Tcl_GetEncodingName)
-	(Tcl_ExternalToUtfDString,Tcl_UtfToExternalDString, OpenEncodingFile)
-	(LoadEscapeEncoding):
-	* generic/tclFileName.c (DoTildeSubst,Tcl_JoinPath,Tcl_SplitPath,
-	(Tcl_TranslateFileName):
-	* generic/tclIOUtil.c (Tcl_FSMatchInDirectory):
-	* generic/tclPipe.c (FileForRedirect,TclCreatePipeline)
-	(Tcl_OpenCommandChannel):
-	* generic/tclResult.c (Tcl_GetStringResult):
-	* generic/tclUtil.c (Tcl_Concat,Tcl_SplitList,Tcl_Merge):
-	* generic/tclVar.c (Tcl_GetVar,Tcl_GetVar2,Tcl_SetVar,Tcl_SetVar2):
-	* mac/tclMacResource.c (Tcl_MacEvalResource,Tcl_MacFindResource):
-	Updated interfaces of generic/tclEncoding, generic/tclFilename.c,
-	generic/tclIOUtil.c, generic/tclPipe.c, generic/tclResult.c,
-	generic/tclUtil.c, generic/tclVar.c and mac/tclMacResource.c according
-	to TIP 27.  Tcl_TranslateFileName rewritten as wrapper around
-	VFS-aware version.
-	***POTENTIAL INCOMPATIBILITY***
-	Includes source incompatibilities: argv arguments of Tcl_Concat,
-	Tcl_JoinPath, Tcl_OpenCommandChannel, Tcl_Merge; argvPtr arguments of
-	Tcl_SplitList and Tcl_SplitPath.
-	* generic/tclDecls.h:
-	* generic/tclIntDecls.h: make genstubs
-
-	* generic/tclCkalloc.c (MemoryCmd):
-	* generic/tclClock.c (FormatClock):
-	* generic/tclCmdAH.c (Tcl_CaseObjCmd,Tcl_EncodingObjCmd,Tcl_FileObjCmd):
-	* generic/tclCmdIL.c (InfoLibraryCmd,InfoPatchLevelCmd,
-	(InfoTclVersionCmd):
-	* generic/tclCompCmds.c (TclCompileForeachCmd):
-	* generic/tclCompCmds.h (TclCompileForeachCmd):
-	* generic/tclCompile.c (TclFindCompiledLocal):
-	* generic/tclEnv.c (TclSetupEnv,TclSetEnv,Tcl_PutEnv,TclGetEnv,
-	(EnvTraceProc):
-	* generic/tclEvent.c (Tcl_BackgroundError):
-	* generic/tclIO.c (Tcl_BadChannelOption,Tcl_SetChannelOption):
-	* generic/tclIOCmd.c (Tcl_ExecObjCmd,Tcl_OpenObjCmd):
-	* generic/tclIOSock.c (TclSockGetPort):
-	* generic/tclIOUtil.c (SetFsPathFromAny):
-	* generic/tclLink.c (LinkTraceProc):
-	* generic/tclMain.c (Tcl_Main):
-	* generic/tclNamesp.c (TclTeardownNamespace):
-	* generic/tclProc.c (TclCreateProc):
-	* generic/tclTest.c (TestregexpObjCmd,TesttranslatefilenameCmd,
-	(TestchmodCmd,GetTimesCmd,TestsetCmd,TestOpenFileChannelProc1,
-	(TestOpenFileChannelProc2,TestOpenFileChannelProc3,AsyncHandlerProc,
-	(TestpanicCmd):
-	* generic/tclThreadTest.c (ThreadErrorProc,ThreadEventProc):
-	* generic/tclUtil.c (TclPrecTraceProc):
-	* mac/tclMacFCmd.c (GetFileSpecs):
-	* mac/tclMacFile.c (TclpMatchInDirectory):
-	* mac/tclMacInit.c (TclpInitLibraryPath,Tcl_SourceRCFile):
-	* mac/tclMacOSA.c (tclOSAStore,tclOSALoad):
-	* mac/tclMacResource.c (Tcl_MacEvalResource):
-	* unix/tclUnixFCmd.c (TclpObjNormalizePath):
-	* unix/tclUnixFile.c (TclpMatchInDirectory,TclpGetUserHome,TclpGetCwd,
-	(TclpReadLink):
-	* unix/tclUnixInit.c (TclpInitLibraryPath,TclpSetVariables,
-	(Tcl_SourceRCFile):
-	* unix/tclUnixPipe.c (TclpOpenFile,TclpCreateTempFile,
-	(TclpCreateProcess):
-	* win/tclWinFile.c (TclpGetCwd,TclpMatchInDirectory):
-	* win/tclWinInit.c (TclpInitLibraryPath,Tcl_SourceRCFile,
-	(TclpSetVariables):
-	* win/tclWinPipe.c (TclpCreateProcess): Updated callers.
-
-2002-01-24  Don Porter <dgp@users.sourceforge.net>
-
-	* generic/tclIOUtil.c (SetFsPathFromAny):  Corrected tilde-substitution
-	of pathnames where > 1 separator follows the ~. [Bug 504950]
-
-2002-01-24  Jeff Hobbs  <jeffh@ActiveState.com>
+	* doc/namespace.n:	New command [namespace upvar]. [Patch 1275435]
+	* generic/tclInt.h:
+	* generic/tclNamesp.c:
+	* generic/tclVar.c:
+	* tests/namespace.test:
+	* tests/upvar.test:
 
-	* library/http/pkgIndex.tcl:
-	* library/http/http.tcl: don't add port in default case to handle
-	broken servers. http bumped to 2.4.1 [Bug 504508]
-
-2002-01-23  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
-
-	* unix/mkLinks: Regenerated.
-	* doc/CrtChannel.3:
-	* doc/ChnlStack.3: Moved documentation for 'Tcl_GetTopChannel' from
-	'CrtChannel' to 'ChnlStack'. Added documentation of
-	'Tcl_GetStackedChannel'. [Bug 506147] reported by Mark Patton
-	<msp@users.sourceforge.net>
-
-2002-01-23  Don Porter <dgp@users.sourceforge.net>
-
-	* win/tclWinFile.c (NativeAccess,NativeStat,NativeIsExec,
-	(TclpGetUserHome):
-	* win/tclWinPort.h (TclWinSerialReopen):
-	* win/tclWinSerial.c (TclWinSerialReopen):
-	* win/tclWinSock.c (Tcl_OpenTcpServer): Corrections to earlier TIP
-	#27 changes. Thanks to Andreas Kupries for the feedback.
-	* generic/tclPlatDecls.h: make genstubs
-
-	* doc/GetHostName.3:
-	* doc/GetOpnFl.3:
-	* doc/OpenTcp.3:
-	* tcl.decls (Tcl_GetHostName,Tcl_GetOpenFile,Tcl_OpenTcpClient,
-	(Tcl_OpenTclServer):
-	* mac/tclMacSock.c (CreateSocket,Tcl_OpenTcpClient,Tcl_OpenTcpServer,
-	(Tcl_GetHostName,GetHostFromString):
-	* unix/tclUnixChan.c (CreateSocket,CreateSocketAddress,
-	(Tcl_OpenTcpClient,Tcl_OpenTcpServer,Tcl_GetOpenFile):
-	* unix/tclUnixSock.c (Tcl_GetHostName):
-	* win/tclWinSock.c (CreateSocket,CreateSocketAddress,
-	(Tcl_OpenTcpClient,Tcl_OpenTcpServer,Tcl_GetHostName):
-	Updated socket interfaces according to TIP 27.
-	* generic/tclCmdIL.c (InfoHostnameCmd): Updated callers.
-	* generic/tclDecls.h: make genstubs
-
-2002-01-21  David Gravereaux <davygrvy@pobox.com>
-
-	* generic/tclLoadNone.c: TclpLoadFile() didn't match proto of typedef
-	Tcl_FSLoadFileProc. OK'd by vincentdarley. [Patch 502488]
-
-2002-01-21  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
-
-	* generic/tclIO.c (WriteChars): Fix for [Bug 506297], reported by
-	Martin Forssen <ruric@users.sourceforge.net>. The encoding chosen in
-	the script exposing the bug writes out three intro characters when
-	TCL_ENCODING_START is set, but does not consume any input as
-	TCL_ENCODING_END is cleared. As some output was generated the
-	enclosing loop calls UtfToExternal again, again with START set. Three
-	more characters in the out and still no use of input ... To break this
-	infinite loop we remove TCL_ENCODING_START from the set of flags after
-	the first call (no condition is required, the later calls remove an
-	unset flag, which is a no-op). This causes the subsequent calls to
-	UtfToExternal to consume and convert the actual input.
-
-2002-01-21  Don Porter <dgp@users.sourceforge.net>
-
-	* generic/tclTest.c: Converted declarations of TestReport file system
-	to more portable form. [Bug 501417].
-
-	* generic/tcl.decls (Tcl_TraceCommand,Tcl_UntraceCommand,
-	(Tcl_CommandTraceInfo):
-	* generic/tclCmdMZ.c (Tcl_TraceCommand,Tcl_UntraceCommand,
-	(Tcl_CommandTraceInfo): Updated APIs in generic/tclCmdMZ.c
-	according to the guidelines of TIP 27.
-	* generic/tclDecls.h: make genstubs
-
-2002-01-18  Don Porter <dgp@users.sourceforge.net>
+2006-01-26  Donal K. Fellows  <dkf@users.sf.net>
 
-	* win/tclWinChan.c:
-	* win/tclWinFCmd.c:
-	* win/tclWinFile.c: Overlooked callers of Tcl_FSGetNativePath
+	* doc/dict.n: Fixed silly bug in example. Thanks to Heiner Marxen
+	<heiner.marxen@unsel.de> for catching this! [Bug 1415725]
 
-	* win/tclWinDde.c:
-	* win/tclWinReg.c: Overlooked callers of Tcl_GetIndexFromObj
+2006-01-26  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-01-18  Daniel Steffen  <das@users.sourceforge.net>
+	* unix/tclUnixChan.c (TclpOpenFileChannel): Tidy up and comment the
+	mess to do with setting up serial channels. This (deliberately) breaks
+	a broken FreeBSD port, indicates what we're really doing, and reduces
+	the amount of conditional compilation sections for better maintenance.
 
-	* generic/tclThreadTest.c:
-	* mac/tclMacChan.c:
-	* mac/tclMacFCmd.c:
-	* mac/tclMacFile.c:
-	* mac/tclMacLoad.c:
-	* mac/tclMacResource.c: TIP 27 CONSTification broke the mac build in a
-	number of places.
+2006-01-25  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-01-17  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+	* unix/tclUnixInit.c (TclpInitPlatform): Improved conditions on when
+	to update the FP rounding mode on FreeBSD, taken from FreeBSD port.
 
-	* generic/tclIOCmd.c (Tcl_GetsObjCmd): Fixed [Bug 504642] as reported
-	by Brian Griffin <bgriffin@users.sourceforge.net>, using his patch.
-	Before the patch the generic I/O layer held an unannounced reference
-	to the interp result to store the read line into. This unfortunately
-	has disastrous results if the channel driver executes a Tcl script to
-	perform its operation, this freeing the interp result. In that case we
-	are dereferencing essentially a dangling reference. It is not truly
-	dangling because the object is in the free list, but this only causes
-	us to smash the free list and have the error occur later somewhere
-	else. The patch simply creates a new object for the line and later
-	sets it into the interp result when we are done with reading.
+2006-01-23  Donal K. Fellows  <dkf@users.sf.net>
 
-2002-01-16  Mo DeJong  <mdejong@users.sourceforge.net>
+	* tests/string.test (string-12.21): Added test for [Bug 1410553] based
+	on original bug report.
 
-	* unix/tcl.m4 (SC_LOAD_TCLCONFIG):
-	* win/tcl.m4 (SC_LOAD_TCLCONFIG): Subst TCL_DBGX into
-	TCL_STUB_LIB_FILE and TCL_STUB_LIB_FLAG variables so that an extension
-	does not need to subst TCL_DBGX into its makefile. [Tk Bug 504356]
+2006-01-23  Miguel Sofer  <msofer@users.sf.net>
 
-2002-01-16  Don Porter <dgp@users.sourceforge.net>
+	* generic/tclStringObj.c: fixed incorrect handling of internal rep in
+	Tcl_GetRange. Thanks to twylite and Peter Spjuth. [Bug 1410553]
 
-	* doc/FileSystem.3:
-	* doc/GetCwd.3:
-	* doc/GetIndex.3:
-	* generic/tcl.decls (Tcl_GetIndexFromObj, Tcl_GetIndexFromObjStruct,
-	(Tcl_GetCwd, Tcl_FSFileAttrStrings, Tcl_FSGetNativePath,
-	(Tcl_FSGetTranslatedStringPath):
-	* generic/tcl.h (Tcl_FSFileAttrStringsProc):
-	* generic/tclFCmd.c (TclFileAttrsCmd):
-	* generic/tclIOUtil.c (Tcl_GetCwd,NativeFileAttrStrings,
-	(Tcl_FSFileAttrStrings,Tcl_FSGetTranslatedStringPath,
-	(Tcl_FSGetNativePath):
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObj,Tcl_GetIndexFromObjStruct):
-	More TIP 27 updates in tclIOUtil.c and tclIndexObj.c that were
-	overlooked before. [Patch 504671]
-	***POTENTIAL INCOMPATIBILITY***
-	Includes a source incompatibility in the tablePtr arguments of the
-	Tcl_GetIndexFromObj* routines.
-	* generic/tclDecls.h: make genstubs
-
-	* generic/tclBinary.c (Tcl_BinaryObjCmd):
-	* generic/tclClock.c (Tcl_ClockObjCmd):
-	* generic/tclCmdAH.c (Tcl_EncodingObjCmd, Tcl_FileObjCmd):
-	* generic/tclCmdIL.c (Tcl_InfoObjCmd,Tcl_LsearchObjCmd,Tcl_LsortObjCmd):
-	* generic/tclCmdMZ.c (Tcl_TraceObjCmd,Tcl_RegexpObjCmd,Tcl_RegsubObjCmd,
-	(Tcl_StringObjCmd,Tcl_SubstObjCmd,Tcl_SwitchObjCmd,
-	(TclTraceCommandObjCmd,TclTraceVariableObjCmd):
-	* generic/tclCompCmds.c (TclCompileStringCmd):
-	* generic/tclEvent.c (Tcl_UpdateObjCmd):
-	* generic/tclFileName.c (Tcl_GlobObjCmd):
-	* generic/tclIO.c (Tcl_FileEventObjCmd):
-	* generic/tclIOCmd.c (Tcl_SeekObjCmd,Tcl_ExecObjCmd,Tcl_SocketObjCmd,
-	(Tcl_FcopyObjCmd):
-	* generic/tclInterp.c (Tcl_InterpObjCmd,SlaveObjCmd):
-	* generic/tclNamesp.c (Tcl_NamespaceObjCmd):
-	* generic/tclPkg.c (Tcl_PackageObjCmd):
-	* generic/tclTest.c (Tcltest_Init,TestencodingObjCmd,TestgetplatformCmd,
-	(TestlocaleCmd,TestregexpObjCmd,TestsaveresultCmd,
-	(TestGetIndexFromObjStructObjCmd,TestReportFileAttrStrings):
-	* generic/tclTestObj.c (TestindexObjCmd,TeststringObjCmd):
-	* generic/tclTimer.c (Tcl_AfterObjCmd):
-	* generic/tclVar.c (Tcl_ArrayObjCmd):
-	* mac/tclMacFCmd.c (SetFileFinderAttributes):
-	* unix/tclUnixChan.c (TclpOpenFileChannel):
-	* unix/tclUnixFCmd.c (tclpFileAttrStrings):
-	* unix/tclUnixFile.c (TclpObjAccess,TclpObjChdir,TclpObjStat,
-	(TclpObjLstat):
-	* win/tclWinFCmd.c (tclpFileAttrStrings): Updated callers.
-
-	* doc/RegExp.3:
-	* doc/Utf.3:
-	* generic/tcl.decls:
-	* generic/tclInt.decls:
-	* generic/tclRegexp.c:
-	* generic/tclUtf.c:  Updated APIs in generic/tclUtf.c and
-	generic/tclRegexp.c according to the guidelines of TIP 27.
-	[Patch 471509]
-
-	* generic/regc_locale.c (element,cclass):
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
-	* generic/tclFileName.c (TclpGetNativePathType,SplitMacPath):
-	* generic/tclIO.c (ReadChars):
-	* mac/tclMacLoad.c (TclpLoadFile):
-	* win/tclWinFile.c (TclpGetUserHome): Updated callers.
-
-	* generic/tclDecls.h:
-	* generic/tclIntDecls.h: make genstubs
-
-	* doc/ParseCmd.3 (Tcl_ParseVar):
-	* generic/tcl.decls (Tcl_ParseVar):
-	* generic/tclParse.c (Tcl_ParseVar):
-	* generic/tclTest.c (TestparsevarObjCmd): Updated APIs in
-	generic/tclParse.c according to the guidelines of TIP 27. Updated
-	callers. [Patch 501046]
-	* generic/tclDecls.h: make genstubs
-
-	* generic/tcl.decls (Tcl_RecordAndEval):
-	* generic/tclDecls.h: make genstubs
-	* generic/tclHistory.c (Tcl_RecordAndEval): Updated APIs in
-	generic/tclHistory.c according to the guidelines of TIP 27.
-	[Patch 504091]
-
-	* doc/CrtSlave.3:
-	* generic/tcl.decls (Tcl_CreateAlias, Tcl_CreateAliasObj,
-	(Tcl_CreateSlave, Tcl_GetAlias, Tcl_GetAliasObj, Tcl_GetSlave):
-	* generic/tclInterp.c (Tcl_CreateAlias, Tcl_CreateAliasObj,
-	(Tcl_CreateSlave, Tcl_GetAlias, Tcl_GetAliasObj, Tcl_GetSlave):
-	Updated APIs in the file generic/tclInterp.c according to the
-	guidelines of TIP 27. [Patch 501371]
-	***POTENTIAL INCOMPATIBILITY***
-	Includes a source incompatibility in the targetCmdPtr arguments of
-	the Tcl_GetAlias* routines.
-
-	* generic/tclDecls.h: make genstubs
-
-2002-01-15  Don Porter <dgp@users.sourceforge.net>
-
-	* doc/SetErrno.3 (Tcl_ErrnoMsg): Corrected documentation for
-	Tcl_ErrnoMsg; it takes an integer argument. Thanks to Georgios
-	Petasis. [Bug 468183]
-
-	* doc/AddErrInfo.3 (Tcl_PosixError):
-	* doc/Eval.3 (Tcl_EvalFile):
-	* doc/FileSystem.c (Tcl_FSOpenFileChannel,Tcl_FSOpenFileChannelProc):
-	* doc/OpenFileChnl.3 (Tcl_OpenFileChannel):
-	* doc/SetErrno.3 (Tcl_ErrnoId,Tcl_ErrnoMsg):
-	* doc/Signal.3 (Tcl_SignalId,Tcl_SignalMsg):
-	* generic/tcl.decls (Tcl_ErrnoId,TclErrnoMsg,Tcl_EvalFile,
-	(Tcl_OpenFileChannel,Tcl_PosixError,Tcl_SignalId,Tcl_SignalMsg,
-	(Tcl_FSOpenFileChannel):
-	* generic/tcl.h (Tcl_FSOpenFileChannelProc):
-	* generic/tclIO.c (FlushChannel):
-	* generic/tclIOUtil.c (Tcl_OpenFileChannel,Tcl_EvalFile,TclGetOpenMode,
-	(Tcl_PosixError,Tcl_FSOpenFileChannel):
-	* generic/tclInt.decls (TclGetOpenMode):
-	* generic/tclInt.h (TclOpenFileChannelProc_,TclGetOpenMode,
-	(TclpOpenFileChannel):
-	* generic/tclPipe.c (TclCleanupChildren):
-	* generic/tclPosixStr.c (Tcl_ErrnoId,Tcl_ErrnoMsg,Tcl_SignalId,
-	(Tcl_SignalMsg):
-	* generic.tclTest.c (PretendTclpOpenFileChannel,
-	(TestOpenFileChannelProc1,TestOpenFileChannelProc2,
-	(TestOpenFileChannelProc3,TestReportOpenFileChannel):
-	* mac/tclMacChan.c (TclpOpenFileChannel):
-	* unix/tclUnixChan.c (TclpOpenFileChannel):
-	* win/tclWinChan.c (TclpOpenFileChannel): Updated APIs in
-	generic/tclIOUtil.c and generic/tclPosixStr.c according to the
-	guidelines of TIP 27. Updated callers. [Patch 499196]
-
-	* generic/tclDecls.h:
-	* generic/tclIntDecls.h: make genstubs
-
-	* doc/CrtChannel.3:
-	* doc/OpenFileChnl.3:
-	* generic/tcl.decls:
-	* generic/tclIO.h:
-	* generic/tclIO.c (DoWrite, Tcl_RegisterChannel, Tcl_GetChannel,
-	(Tcl_CreateChannel, Tcl_GetChannelName, CloseChannel, Tcl_Write,
-	(Tcl_WriteRaw, Tcl_Ungets, Tcl_BadChannelOption, Tcl_GetChannelOption,
-	(Tcl_SetChannelOption, Tcl_GetChannelNamesEx, Tcl_ChannelName):
-	Updated APIs in the file generic/tclIO.c according to the guidelines
-	of TIP 27. Several minor documentation corrections as well. [Patch
-	503565]
-	* generic/tclDecls.h: make genstubs
-
-	* generic/tcl.h (Tcl_DriverOutputProc, Tcl_DriverGetOptionProc,
-	(Tcl_DriverSetOptionProc):
-	* generic/tclIOGT.c (TransformOutputProc, TransformGetOptionProc,
-	(TransformSetOptionProc):
-	* mac/tclMacChan.c (FileOutput, StdIOOutput):
-	* man/tclMacSock.c (TcpGetOptionProc, TcpOutput):
-	* unix/tclUnixChan.c (FileOutputProc, TcpGetOptionProc, TcpOutputProc,
-	(TtyGetOptionProc, TtySetOptionProc):
-	* unix/tclUnixPipe.c (PipeOuputProc):
-	* win/tclWinChan.c (FileOutputProc):
-	* win/tclWinConsole.c (ConsleOutputProc):
-	* win/tclWinPipe.c (PipeOuputProc):
-	* win/tclWinSerial.c (SerialOutputProc, SerialGetOptionProc,
-	(SerialSetOptionProc):
-	* win/tclWinSock.c (TcpGetOptionProc, TcpOutput): Updated channel
-	driver interface according to the guidelines of TIP 27. See also [Bug
-	500348].
-
-	* doc/CrtChannel.3:
-	* generic/tcl.h:
-	* generic/tclIO.c:
-	* generic/tclIO.h:
-	* generic/tclInt.h:
-	* tools/checkLibraryDoc.tcl:
-	Moved Tcl_EolTranslation enum declaration from generic/tcl.h to
-	generic/tclInt.h (renamed to TclEolTranslation). It is not used
-	anywhere in Tcl's public interface.
+	* generic/tclProc.c: fixed args handling for precompiled bodies [Bug
+	1412695]; thanks to Uwe Traum.
 
-2002-01-14  Don Porter <dgp@users.sourceforge.net>
+2006-01-16  Reinhard Max  <max@suse.de>
 
-	* doc/GetIndex.3:
-	* doc/WrongNumArgs.3:
-	* generic/tcl.decls (Tcl_GetIndexFromObj, Tcl_GetIndexFromObjStruct,
-	(Tcl_WrongNumArgs):
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObj, Tcl_GetIndexFromObjStruct,
-	(Tcl_WrongNumArgs): Updated APIs in the file generic/tclIndexObj.c
-	according to the guidelines of TIP 27. [Patch 501491]
-	* generic/tclDecls.h: make genstubs
+	* generic/tclPipe.c (FileForRedirect): Prevent nameString from being
+	freed without having been initialized.
+	* tests/exec.test: Added a test for the above.
 
-2002-01-11  Mo DeJong  <mdejong@users.sourceforge.net>
+2006-01-12  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
 
-	* unix/configure: Regen.
-	* unix/configure.in:
-	* win/configure: Regen.
-	* win/configure.in: Use ${libdir} instead of ${exec_prefix}/lib
-	to properly support the --libdir option to configure. [Bug 489370]
-
-2002-01-11  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
-
-	* win/tclWinSerial.c (SerialSetOptionProc): Applied patch for [Bug
-	500348] supplied by Rolf Schroedter <schroedter@users.sf.net>. The
-	function modified the contents of the the 'value' string and now does
-	not do this anymore. This is a followup to the change made on
-	2001-12-17.
-
-2002-01-11  David Gravereaux <davygrvy@pobox.com>
-
-	* win/makefile.vc: Removed -GD compiler option. It was intended for
-	future use, but MS is again changing the future at their whim. The
-	D4002 warning was harmless though, but someone using VC .NET logged it
-	as a concern. [Bug 501565]
-
-2002-01-11  Mo DeJong  <mdejong@users.sourceforge.net>
-
-	* unix/Makefile.in: Burn Tcl build directory into tcltest executable
-	to avoid crashes caused by ld loading a previously installed version
-	of the tcl shared library. [Bug 218110]
-
-2002-01-10  Don Porter <dgp@users.sourceforge.net>,
-	Kevin Kenny <kennykb@users.sourceforge.net>
-
-	* unix/tclLoadDld.c (TclpLoadFile):  syntax error: unbalanced parens.
-	Kevin notes that it's far from clear that this file is ever included
-	in an actual build; Linux without dlopen appears to be a nonexistent
-	configuration.
-
-2002-01-08  Don Porter <dgp@users.sourceforge.net>,
-	Kevin Kenny <kennykb@users.sourceforge.net>
-
-	* doc/StaticPkg.3 (Tcl_StaticPackage):
-	* generic/tcl.decls (Tcl_StaticPackage):
-	* generic/tclDecls.h (Tcl_StaticPackage):
-	* generic/tclInt.decls (TclGuessPackageName):
-	* generic/tclInt.h (TclGuessPackageName):
-	* generic/tclLoad.c (Tcl_StaticPackage):
-	* generic/tclLoadNone.c (TclGuessPackageName):
-	* mac/tclMacLoad.c (TclGuessPackageName):
-	* unix/tclLoadAout.c (TclGuessPackageName):
-	* unix/tclLoadDl.c (TclGuessPackageName):
-	* unix/tclLoadDld.c (TclGuessPackageName):
-	* unix/tclLoadDyld.c (TclGuessPackageName):
-	* unix/tclLoadNext.c (TclGuessPackageName):
-	* unix/tclLoadOSF.c (TclGuessPackageName):
-	* unix/tclLoadShl.c (TclGuessPackageName):
-	* win/tclWinLoad.c (TclGuessPackageName):  Updated APIs in the files
-	*/tcl*Load*.c according to the guidelines of TIP 27. [Patch 501096]
-
-2002-01-09  Don Porter <dgp@users.sourceforge.net>
-
-	* generic/tclTest.c (MainLoop):
-	* tests/main.test (Tcl_Main-1.{3,4,5,6}):  Corrected some non-portable
-	tests from the new Tcl_Main changes.  Thanks to Kevin Kenny.
-
-2002-01-07  Don Porter <dgp@users.sourceforge.net>
-
-	* generic/tclEvent.c (TclInExit):
-	* generic/tclIOUtil.c (SetFsPathFromAbsoluteNormalized,
-	(SetFsPathFromAny,Tcl_FSNewNativePath,DupFsPathInternalRep):
-	* generic/tclListObj.c (TclLsetList,TclLsetFlat):  Added some type
-	casts to satisfy picky compilers.
-
-	* generic/tclMain.c:  Bug fix: neglected the NULL case in
-	TclGetStartupScriptFileName().	Broke Tk/wish.
-
-2002-01-05  Don Porter <dgp@users.sourceforge.net>
-
-	* doc/Tcl_Main.3:
-	* generic/tclMain.c:  Substantial rewrite and expanded documentation
-	of Tcl_Main to correct a number of bugs and flaws:
-
-		* Interactive Tcl_Main can now enter a main loop, exit that
-		  loop and continue interactive operations. The loop may even
-		  exit in the midst of interactive command typing without loss
-		  of the partial command. [Bugs 486453, 474131]
-		* Tcl_Main now gracefully handles deletion of its master
-		  interpreter.
-		* Interactive Tcl_Main can now operate with non-blocking stdin
-		* Interactive Tcl_Main can now detect EOF on stdin even in
-		  mid-command.	[Bug 491341]
-		* Added VFS-aware internal routines for managing the startup
-		  script selection.
-		* Tcl variable 'tcl_interactive' is now linked to C variable
-		  'tty' so that one can disable/enable interactive prompts at
-		  the script level when there is no startup script. This is
-		  meant for use by the test suite.
-		* Consistent use of the Tcl libraries standard channels as
-		  returned by Tcl_GetStdChannel(); as opposed to the channels
-		  named 'stdin', 'stdout', and 'stderr' in the master interp,
-		  which can be different or unavailable.
-		* Tcl_Main now calls Tcl_Exit() if evaluation of [exit] in the
-		  master interpreter returns, assuring Tcl_Main does not
-		  return.
-		* Documented Tcl_Main's absence from public stub table
-		* Documented that Tcl_Main does not return.
-		* Documented Tcl variables set by Tcl_Main.
-		* All prompts are done from a single procedure, Prompt.
-		* Use of Tcl_Obj-enabled interfaces everywhere.
-
-	* generic/tclInt.decls (TclGetStartupScriptPath,
-	(TclSetStartupScriptPath): New internal VFS-aware routines for
-	managing the startup script of Tcl_Main.
-	* generic/tclIntDecls.h:
-	* generic/tclStubInit.c: make genstubs
+	* generic/tclPathObj.c (Tcl_FSGetInternalRep): backported patch from
+	core-8-4-branch. A freed pointer has been overwritten causing all
+	sorts of coredumps.
 
-	* generic/tclTest.c (TestsetmainloopCmd,TestexitmainloopCmd,
-	(Tcltest_Init,TestinterpdeleteCmd):
-	* tests/main.test (new):  Added new file to test suite that thoroughly
-	tests generic/tclMain.c; added some new test commands for testing
-	Tcl_SetMainLoop().
+2006-01-12  Vince Darley  <vincentdarley@sourceforge.net>
 
-2002-01-04  Don Porter <dgp@users.sourceforge.net>
+	* win/tclWinFile.c: fix to sharing violation [Bug 1366227]
 
-	* doc/Alloc.3:
-	* doc/Concat.3:
-	* doc/CrtMathFnc.3:
-	* doc/Hash.3:
-	* doc/Interp.3:
-	* doc/LinkVar.3:
-	* doc/ObjectType.3:
-	* doc/PkgRequire.3:
-	* doc/Preserve.3:
-	* doc/SetResult.3:
-	* doc/SplitList.3:
-	* doc/SplitPath.3:
-	* doc/TCL_MEM_DEBUG.3: Updated documentation to describe the ckalloc,
-	ckfree, ckrealloc, attemptckalloc, and attemptckrealloc macros, and to
-	accurately describe when and how they are used. [Bug 497459]
+2006-01-11  Don Porter	<dgp@users.sourceforge.net>
 
-	* generic/tclThreadJoin.c (TclRememberJoinableThread,TclJoinThread):
-	Replaced Tcl_Alloc and Tcl_Free calls with ckalloc and ckfree so that
-	memory debugging is supported.
+	* generic/tclBasic.c:	Moved Tcl_LogCommandInfo from tclBasic.c to
+	* generic/tclNamesp.c:	tclNamesp.c to get access to identifier with
+	* tests/error.test (error-7.0): file scope. Added check for traces on
+	::errorInfo, and when present fall back to contruction of the stack
+	trace in the variable so that write trace notification timings are
+	compatible with earlier Tcl releases. This reduces, but does not
+	completely eliminate the ***POTENTIAL INCOMPATIBILITY*** created by
+	the 2004-10-15 commit. [Bug 1397843]
 
-2002-01-04  Daniel Steffen <das@users.sourceforge.net>
+2006-01-10  Daniel Steffen  <das@users.sourceforge.net>
 
-	* mac/tclMacTime.c (TclpGetTZName): fix for daylight savings TZName
-	bug
+	* unix/configure:    add caching, use AC_CACHE_CHECK instead of
+	* unix/configure.in: AC_CACHE_VAL where possible, consistent message
+	* unix/tcl.m4:	     quoting, sync relevant tclconfig/tcl.m4 changes
+	and gratuitous formatting differences, fix SC_CONFIG_MANPAGES with
+	default argument, Darwin improvements to SC_LOAD_*CONFIG.
 
-2002-01-03  Don Porter <dgp@users.sourceforge.net>
+2006-01-09  Don Porter	<dgp@users.sourceforge.net>
 
-	* doc/FileSystem.3:
-	* generic/tclIOUtil.c: Updated some old uses of "fileName" to new VFS
-	terminology, "pathPtr".
+	* generic/tclNamesp.c (NamespaceInscopeCmd):	[namespace inscope]
+	* tests/namespace.test: commands were not reported by [info level].
+	[Bug 1400572]
 
-2002-01-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+2006-01-09  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-	* tests/basic.test (basic-39.4): Greatly simplified test while still
-	leaving it so that it crashes when run without the fix to the
-	[foreach] implementation.
-	* generic/tclCmdAH.c (Tcl_ForeachObjCmd): Stopped [Bug 494348] from
-	happening by not trying to be so clever with cacheing; if nothing
-	untoward is happening anyway, the less efficient technique will only
-	add a few instruction cycles (one function call and a few
-	derefs/assigns per list per iteration, with no change in the number of
-	tests) and if something odd *is* going on, the code is now far more
-	robust.
+	* generic/tclTrace.c: Stop exporting the guts of the trace command;
+	nothing outside this file needs to see it. [Bug 971336]
 
-	* tests/basic.test (basic-39.4): Reproducable script from [Bug 494348]
+2006-01-05  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
 
-2002-01-02  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+	* unix/tcl.m4 (TCL_CONFIG_SYSTEM): Factor out the code to determine
+	the operating system version number, as it was replicated in several
+	places.
 
-	* tests/util.test (Wrapper_Tcl_StringMatch,util-5.*): Rewrote so the
-	test is performed with the right internal function since [string
-	match] no longer uses Tcl_StringCaseMatch internally.
+2006-01-04  David Gravereaux  <davygrvy@pobox.com>
 
-	* tests/string.test (string-11.51):
-	* generic/tclUtf.c (Tcl_UniCharCaseMatch):
-	* generic/tclUtil.c (Tcl_StringCaseMatch): Fault with matching
-	case-insensitive non-ASCII patterns containing upper case characters.
-	[Bug 233257]
+	* win/tclAppInit.c: WIN32 native console signal handler removed. This
+	was found to be interfering with TWAPI extension one. IMO, special
+	services such as signal handlers should best be done with extensions
+	to the core after discussions on c.l.t. about Roy Terry's tclsh
+	children of a real windows service shell.
 
 	******************************************************************
+	*** CHANGELOG ENTRIES FOR 2005 IN "ChangeLog.2005"	       ***
+	*** CHANGELOG ENTRIES FOR 2004 IN "ChangeLog.2004"	       ***
+	*** CHANGELOG ENTRIES FOR 2003 IN "ChangeLog.2003"	       ***
+	*** CHANGELOG ENTRIES FOR 2002 IN "ChangeLog.2002"	       ***
 	*** CHANGELOG ENTRIES FOR 2001 IN "ChangeLog.2001"	       ***
 	*** CHANGELOG ENTRIES FOR 2000 IN "ChangeLog.2000"	       ***
 	*** CHANGELOG ENTRIES FOR 1999 AND EARLIER IN "ChangeLog.1999" ***
diff --git a/ChangeLog.1999 b/ChangeLog.1999
index a7483a0..3bf4e9a 100644
--- a/ChangeLog.1999
+++ b/ChangeLog.1999
@@ -15,7 +15,7 @@
 
 	* unix/Makefile.in: added -srcdir=... for 'make html'
 
-	* doc/Hash.3: fixed reference to ckfree [Bug: 3912]
+	* doc/Hash.3: fixed reference to ckfree [Bug 3912]
 	* doc/RegExp.3: fixed calling params for Tcl_RegExecFromObj
 	* doc/open.n: fixed minor formatting errors
 	* doc/string.n: fixed minor formatting errors
@@ -24,12 +24,12 @@
 	* tests/cmdIL.test:
 	* generic/tclCmdIL.c: added -unique option to lsort
 
-	* generic/tclThreadTest.c: changed thread ids to longs [Bug: 3902]
+	* generic/tclThreadTest.c: changed thread ids to longs [Bug 3902]
 
-	* mac/tclMacOSA.c: fixed applescript for I18N [Bug: 3644]
+	* mac/tclMacOSA.c: fixed applescript for I18N [Bug 3644]
 
 	* win/mkd.bat:
-	* win/rmd.bat: removed necessity of tag.txt [Bug: 3874]
+	* win/rmd.bat: removed necessity of tag.txt [Bug 3874]
 
 	* win/tclWinThrd.c: changed CreateThread to _beginthreadex and
 	ExitThread to _endthreadex
@@ -47,43 +47,43 @@
 	* mac/tclMacFile.c:
 	* unix/tclUnixFile.c:
 	* win/tclWinFile.c: enhanced the glob command with the new options
-	-types -path -directory and -join.  Deprecated TclpMatchFiles with
+	-types -path -directory and -join. Deprecated TclpMatchFiles with
 	TclpMatchFilesTypes, extended TclGlob and TclDoGlob and added
-	GlobTypeData structure. [Bug: 2363]
+	GlobTypeData structure. [Bug 2363]
 
 1999-12-10  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* tests/var.test:
-	* generic/tclCompile.c: fixed problem where setting to {} array
-	would intermittently not work. (Fontaine) [Bug: 3339]
+	* generic/tclCompile.c: fixed problem where setting to {} array would
+	intermittently not work. [Bug 3339] (Fontaine)
 
 	* generic/tclCmdMZ.c:
-	* generic/tclExecute.c: optimized INST_TRY_CVT_TO_NUMERIC to
-	recognize boolean objects. (Spjuth) [Bug: 2815]
+	* generic/tclExecute.c: optimized INST_TRY_CVT_TO_NUMERIC to recognize
+	boolean objects. [Bug 2815] (Spjuth)
 
 	* tests/info.test:
 	* tests/parseOld.test:
 	* generic/tclCmdAH.c:
 	* generic/tclProc.c: changed Tcl_UplevelObjCmd (uplevel) and
-	Tcl_EvalObjCmd (eval) to use TCL_EVAL_DIRECT in the single arg
-	case as well, to take advantage	of potential pure list input
-	optimization.  This means that it won't get byte compiled though,
-	which should be acceptable.
-	* generic/tclBasic.c: made Tcl_EvalObjEx pure list object aware in
-	the TCL_EVAL_DIRECT case for efficiency.
-	* generic/tclUtil.c: made Tcl_ConcatObj pure list object aware,
-	and return a list object in that case [Bug: 2098 2257]
+	Tcl_EvalObjCmd (eval) to use TCL_EVAL_DIRECT in the single arg case as
+	well, to take advantage of potential pure list input optimization.
+	This means that it won't get byte compiled though, which should be
+	acceptable.
+	* generic/tclBasic.c: made Tcl_EvalObjEx pure list object aware in the
+	TCL_EVAL_DIRECT case for efficiency.
+	* generic/tclUtil.c: made Tcl_ConcatObj pure list object aware, and
+	return a list object in that case [Bug 2098 2257]
 
 	* generic/tclMain.c: changed Tcl_Main to not constantly reuse the
 	commandPtr object (interactive case) as it could be shared. (Fellows)
 
 	* unix/configure.in:
 	* unix/tcl.m4:
-	* unix/tclUnixPipe.c: removed checking for compatible vfork
-	function and use of the vfork function.  Modern VM systems rarely
-	suffer any performance degradation when fork is used, and it
-	solves multiple problems with vfork.  Users that still want vfork
-	can add -Dfork=vfork to the compile flags. [Bug: 942 2228 1312]
+	* unix/tclUnixPipe.c: removed checking for compatible vfork function
+	and use of the vfork function. Modern VM systems rarely suffer any
+	performance degradation when fork is used, and it solves multiple
+	problems with vfork. Users that still want vfork can add -Dfork=vfork
+	to the compile flags. [Bug 942 2228 1312]
 
 1999-12-09  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -96,44 +96,44 @@
 	* win/tclWinFCmd.c:
 	* win/tclWinInit.c:
 	* win/tclWinPipe.c:
-	* win/tclWinSock.c: removed all code that supported Win32s.  It
-	was no longer officially supported, and likely didn't work anyway.
+	* win/tclWinSock.c: removed all code that supported Win32s. It was no
+	longer officially supported, and likely didn't work anyway.
 	* win/makefile.vc: removed 16 bit stuff, cleaned up.
 
 	* win/tcl16.rc:
 	* win/tclWin16.c:
-	* win/winDumpExts.c: these files have been removed from the
-	source tree (no longer necessary to build)
+	* win/winDumpExts.c: these files have been removed from the source
+	tree (no longer necessary to build)
 
 1999-12-07  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* tests/io.test: removed 'knownBug' tests that were for
-	unsupported0, which is now fcopy (that already has tests)
+	* tests/io.test: removed 'knownBug' tests that were for unsupported0,
+	which is now fcopy (that already has tests)
 
 	* mac/tclMacPort.h: added utime.h include
 
 	* generic/tclDate.c:
-	* unix/Makefile.in: fixed make gendate to swap const with CONST
-	so it uses the Tcl defined CONST type [Bug: 3521]
+	* unix/Makefile.in: fixed make gendate to swap const with CONST so it
+	uses the Tcl defined CONST type [Bug 3521]
 
-	* generic/tclIO.c: removed panic that could occur in FlushChannel
-	when a "blocking" channel would receive EAGAIN, instead treating
-	it the same as non-blocking. [Bug: 3773]
+	* generic/tclIO.c: removed panic that could occur in FlushChannel when
+	a "blocking" channel would receive EAGAIN, instead treating it the
+	same as non-blocking. [Bug 3773]
 
-	* generic/tclUtil.c: fixed Tcl_ScanCountedElement to not step
-	beyond the end of the counted string [Bug: 3336]
+	* generic/tclUtil.c: fixed Tcl_ScanCountedElement to not step beyond
+	the end of the counted string. [Bug 3336]
 
 1999-12-03  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* doc/load.n: added note about NT's buggy handling of './' with
 	LoadLibrary
 
-	* library/http2.1/http.tcl: fixed error handling in http::Event
-	[Bug: 3752]
+	* library/http2.1/http.tcl: fixed error handling in http::Event. [Bug
+	3752]
 
 	* tests/env.test: removed knownBug limitation from working test
-	* tests/all.tcl: ensured that ::tcltest::testsDirectory would be
-	set to an absolute path
+	* tests/all.tcl: ensured that ::tcltest::testsDirectory would be set
+	to an absolute path
 
 	* tests/expr-old.test:
 	* tests/parseExpr.test:
@@ -144,86 +144,82 @@
 	* generic/tclParseExpr.c:
 	* generic/tclUtil.c:
 	* generic/tclExecute.c: added TclCheckBadOctal routine to enhance
-	error message checking for when users use invalid octal numbers
-	(like 08), as well as replumbed the Expr*Funcs with a new
-	VerifyExprObjType to simplify type handling. [Bug: 2467]
+	error message checking for when users use invalid octal numbers (like
+	08), as well as replumbed the Expr*Funcs with a new VerifyExprObjType
+	to simplify type handling. [Bug 2467]
 
 	* tests/expr.test:
-	* generic/tclCompile.c: fixed 'bad code length' error for
-	'expr + {[incr]}' case, with new test case [Bug: 3736]
-	and seg fault on 'expr + {[error]}' (different cause) that
-	was caused by a correct optimization that didn't correctly
-	track how it was modifying the source string in the opt.
-	The optimization was removed, which means that:
+	* generic/tclCompile.c: fixed 'bad code length' error for 'expr +
+	{[incr]}' case, with new test case [Bug 3736] and seg fault on 'expr
+	+ {[error]}' (different cause) that was caused by a correct
+	optimization that didn't correctly track how it was modifying the
+	source string in the opt. The optimization was removed, which means
+	that:
 		expr 1 + {[string length abc]}
-	will be not be compiled inline as before, but this should be
-	written:
+	will be not be compiled inline as before, but this should be written:
 		expr {1 + [string length abc]}
-	which will be compiled inline for speed.  This prevents
+	which will be compiled inline for speed. This prevents:
 		expr 1 + {[mindless error]}
-	from seg faulting, and only affects optimizations for
-	degenerate cases [Bug: 3737]
+	from seg faulting, and only affects optimizations for degenerate cases
+	[Bug 3737]
 
 1999-12-01  Scott Redman <redman@scriptics.com>
 
-	* generic/tcl.decls :
-	* generic/tclMain.c :
-	* unix/tclAppInit.c: 
+	* generic/tcl.decls:
+	* generic/tclMain.c:
+	* unix/tclAppInit.c:
 	* win/tclAppInit.c: Added two new internal functions,
-	TclSetStartupScriptFileName() and TclGetStartupScriptFileName()
-	and added hooks into the main() code for supporting TclPro and
-	other "big" shells more easily without requiring a copy of the
-	main() code.
-	
+	TclSetStartupScriptFileName() and TclGetStartupScriptFileName() and
+	added hooks into the main() code for supporting TclPro and other "big"
+	shells more easily without requiring a copy of the main() code.
+
 	* generic/tclEncoding.c:
-	* generic/tclEvent.c:  Moved encoding-related startup code from
+	* generic/tclEvent.c: Moved encoding-related startup code from
 	tclEvent.c into the more appropriate tclEncoding.c.
-	
+
 1999-11-30  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* generic/tclIO.c: fix from Kupries for	Tcl_UnstackChannel that
 	correctly handles resetting translation and encoding.
 
-	* generic/tclLoad.c: #def'd out the unloading of DLLs at finalize
-	time for Unix in TclFinalizeLoad. [Bug: 2560 3373]  Should be
-	parametrized to allow for user to specify unload or not.
+	* generic/tclLoad.c: #def'd out the unloading of DLLs at finalize time
+	for Unix in TclFinalizeLoad. [Bug 2560 3373] Should be parametrized
+	to allow for user to specify unload or not.
 
-	* win/tclWinTime.c: fixed handling of %Z on NT for time zones
-	that don't have DST.
+	* win/tclWinTime.c: fixed handling of %Z on NT for time zones that
+	don't have DST.
 
 1999-11-29  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* library/dde1.1/pkgIndex.tcl:
-	* library/reg1.0/pkgIndex.tcl: added supported for debugged
-	versions of the libraries
+	* library/reg1.0/pkgIndex.tcl: added supported for debugged versions
+	of the libraries
 
 	* unix/tclUnixPipe.c: fixed PipeBlockModeProc to properly set
-	isNonBlocking flag on pipe. [Bug: 1356 710]
+	isNonBlocking flag on pipe. [Bug 1356 710]
 	removed spurious fcntl call from PipeBlockModeProc
 
 	* tests/scan.test:
-	* generic/tclScan.c: fixed scan where %[..] didn't match anything
-	and added test case [Bug: 3700]
+	* generic/tclScan.c: fixed scan where %[..] didn't match anything and
+	added test case. [Bug 3700]
 
 1999-11-24  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* doc/open.n:
 	* win/tclWinSerial.c: adopted patch from Schroedter to handle
-	fconfigure $sock -lasterror on Windows. [RFE: 3368]
+	fconfigure $sock -lasterror on Windows. [RFE 3368]
 
-	* generic/tclCmdIL.c: made SORTMODE_INTEGER work with Longs
-	[Bug: 3652]
+	* generic/tclCmdIL.c: made SORTMODE_INTEGER work with Longs [Bug 3652]
 
 1999-11-23  Scott Stanton  <stanton@scriptics.com>
 
-	* library/tcltest1.0/tcltest.tcl: Fixed bug where tcltest output
-	went to stdout instead of the specified output file in some
-	cases.
+	* library/tcltest1.0/tcltest.tcl: Fixed bug where tcltest output went
+	to stdout instead of the specified output file in some cases.
 
 1999-11-19  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclProc.c: backed out change from 1999-11-18 as it
-	could affect return string from upvar as well.
+	* generic/tclProc.c: backed out change from 1999-11-18 as it could
+	affect return string from upvar as well.
 
 	* tools/tcl.wse.in: added tcltest1.0 library to distribution list
 
@@ -234,49 +230,49 @@
 1999-11-18  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* unix/tcl.m4: added defined for _THREAD_SAFE in --enable-threads
-	case; added check for pthread_mutex_init in libc; in AIX case,
-	with --enable-threads ${CC}_r is used; fixed flags when using gcc
-	on SCO
+	case; added check for pthread_mutex_init in libc; in AIX case, with
+	--enable-threads ${CC}_r is used; fixed flags when using gcc on SCO
 
-	* generic/tclProc.c: corrected error reporting for default case
-	at the global level for uplevel command.
+	* generic/tclProc.c: corrected error reporting for default case at the
+	global level for uplevel command.
 
-	* generic/tclIOSock.c: changed int to size_t type for len
-	in TclSockMinimumBuffers.
+	* generic/tclIOSock.c: changed int to size_t type for len in
+	TclSockMinimumBuffers.
 
-	* generic/tclCkalloc.c: fixed Tcl_DbCkfree to return a value
-	on NULL input. [Bug: 3400]
+	* generic/tclCkalloc.c: fixed Tcl_DbCkfree to return a value on NULL
+	input. [Bug 3400]
 
-	* generic/tclStringObj.c: fixed support for passing in negative
-	length to Tcl_SetUnicodeObj, et al handling routines. [Bug: 3380]
+	* generic/tclStringObj.c: fixed support for passing in negative length
+	to Tcl_SetUnicodeObj, et al handling routines. [Bug 3380]
 
 	* doc/scan.n:
 	* tests/scan.test:
-	* generic/tclScan.c: finished support for inline scan by
-	supporting XPG identifiers.
+	* generic/tclScan.c: finished support for inline scan by supporting
+	XPG identifiers.
 
 	* doc/http.n:
-	* library/http2.1/http.tcl: added register and unregister
-	commands to http:: package (better support for tls/SSL),
-	as well as -type argument to http::geturl. [RFE: 2617]
+	* library/http2.1/http.tcl: added register and unregister commands to
+	http:: package (better support for tls/SSL), as well as -type argument
+	to http::geturl. [RFE 2617]
 
-	* generic/tclBasic.c: removed extra decr of numLevels in
-	Tcl_EvalObjEx that could cause seg fault. (mjansen@wendt.de)
+	* generic/tclBasic.c: removed extra decr of numLevels in Tcl_EvalObjEx
+	that could cause seg fault. (mjansen@wendt.de)
 
 	* generic/tclEvent.c: fixed possible lack of MutexUnlock in
-	Tcl_DeleteExitHandler [Bug: 3545]
+	Tcl_DeleteExitHandler. [Bug 3545]
 
-	* unix/tcl.m4: Added better pthreads library check and inclusion
-	of _THREAD_SAFE in --enable-threads case
+	* unix/tcl.m4: Added better pthreads library check and inclusion of
+	_THREAD_SAFE in --enable-threads case
 	Added support for gcc config on SCO
 
 	* doc/glob.n: added note about ..../ glob behavior on Win9*
-	* doc/tcltest.n: fixed minor example errors [Bug: 3551]
+	* doc/tcltest.n: fixed minor example errors. [Bug 3551]
 
 1999-11-17 Brent Welch <welch@scriptics.com>
-	* library/http2.1/http.tcl: Correctly fixed the -timeout
-	problem mentioned in the 10-29 change.  Also added error
-	handling for failed writes on the socket during the protocol.
+
+	* library/http2.1/http.tcl: Correctly fixed the -timeout problem
+	mentioned in the 10-29 change. Also added error handling for failed
+	writes on the socket during the protocol.
 
 1999-11-09  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -291,54 +287,53 @@
 	* generic/tclParse.c: added code in Tcl_ParseBraces to test for
 	possible unbalanced open brace in a comment
 
-	* library/init.tcl: removed the installed binary directory from
-	the auto_path variable
+	* library/init.tcl: removed the installed binary directory from the
+	auto_path variable
 
-	* tools/tcl.wse.in: updated to 8.3a1, fixed install of twind.tcl
-	and koi8-r.enc files
+	* tools/tcl.wse.in: updated to 8.3a1, fixed install of twind.tcl and
+	koi8-r.enc files
 
 	* unix/tcl.m4: added recognition of pthreads library for AIX
 
 1999-10-29  Brent Welch <welch@scriptics.com>
-	* generic/tclInt.h: Modified the TclNewObj and TclDecrRefCount
-	in two ways.  First, in the case of TCL_THREADS, we do not use
-	the special Tcl_Obj allocator because that is a source of 
-	lock contention.  Second, general code cleanup to eliminate
-	duplicated code. In particular, TclDecrRefCount now uses
-	TclFreeObj instead of duplicating that code, so it is now
-	identical to Tcl_DecrRefCount.
-
-	* generic/tclObj.c: Changed Tcl_NewObj so it uses the
-	TclNewObj macro instead of duplicating the code.  Adjusted
-	TclFreeObj so it understands the TCL_THREADS case described
-	above.
-
-	* library/http2.1/http.tcl: Fixed a bug in the handling of
-	the state(status) variable when the -timeout flag is specified.
-	Previously it was possible to leave the status undefined
-	instead of empty, which caused errors in http::status
+
+	* generic/tclInt.h: Modified the TclNewObj and TclDecrRefCount in two
+	ways. First, in the case of TCL_THREADS, we do not use the special
+	Tcl_Obj allocator because that is a source of lock contention. Second,
+	general code cleanup to eliminate duplicated code. In particular,
+	TclDecrRefCount now uses TclFreeObj instead of duplicating that code,
+	so it is now identical to Tcl_DecrRefCount.
+
+	* generic/tclObj.c: Changed Tcl_NewObj so it uses the TclNewObj macro
+	instead of duplicating the code. Adjusted TclFreeObj so it understands
+	the TCL_THREADS case described above.
+
+	* library/http2.1/http.tcl: Fixed a bug in the handling of the
+	state(status) variable when the -timeout flag is specified. Previously
+	it was possible to leave the status undefined instead of empty, which
+	caused errors in http::status
 
 1999-10-28  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* unix/aclocal.m4: made it just include tcl.m4
 
-	* library/tcltest1.0/tcltest.tcl: updated makeFile to return
-	full pathname of file created
+	* library/tcltest1.0/tcltest.tcl: updated makeFile to return full
+	pathname of file created
 
 	* generic/tclStringObj.c: fixed Tcl_AppendStringsToObjVA so it only
-	iterates once over the va_list (avoiding a memcpy of it,
-	which is not portable).
+	iterates once over the va_list (avoiding a memcpy of it, which is not
+	portable).
 
 	* generic/tclEnv.c: fixed possible ABR error in environ array
 
 	* tests/scan.test:
-	* generic/tclScan.c: added support for use of inline scan,
-	XPG3 currently not included
+	* generic/tclScan.c: added support for use of inline scan, XPG3
+	currently not included
 
 	* tests/incr.test:
 	* tests/set.test:
-	* generic/tclCompCmds.c: fixed improper bytecode handling of
-	'eval {set array($unknownvar) 5}' (also for incr) [Bug: 3184]
+	* generic/tclCompCmds.c: fixed improper bytecode handling of 'eval
+	{set array($unknownvar) 5}' (also for incr). [Bug 3184]
 
 	* win/tclWinTest.c: added testvolumetype command, as atime is
 	completely ignored for Windows FAT file systems
@@ -346,67 +341,67 @@
 	* unix/tclUnixPort.h: added utime.h to includes
 	* doc/file.n:
 	* tests/cmdAH.test:
-	* generic/tclCmdAH.c: added time arguments to atime and mtime
-	file command methods (support 'touch' functionality)
+	* generic/tclCmdAH.c: added time arguments to atime and mtime file
+	command methods (support 'touch' functionality)
 
 1999-10-20  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* unix/tclUnixNotfy.c: fixed event/io threading problems by
-	making triggerPipe non-blocking [Bug: 2792]
+	* unix/tclUnixNotfy.c: fixed event/io threading problems by making
+	triggerPipe non-blocking. [Bug 2792]
 
 	* library/tcltest1.0/tcltest.tcl:
 	* generic/tclThreadTest.c: fixed mem leaks in threads
 
-	* generic/tclResult.c: fixed Tcl_AppendResultVA so it only
-	iterates once over the va_list (avoiding a memcpy of it,
-	which is not portable).
+	* generic/tclResult.c: fixed Tcl_AppendResultVA so it only iterates
+	once over the va_list (avoiding a memcpy of it, which is not
+	portable).
 
 	* generic/regc_color.c: fixed mem leak and assertion, from HS
 
-	* generic/tclCompile.c: removed savedChar trick that appeared to
-	be causing a segv when the literal table was released
+	* generic/tclCompile.c: removed savedChar trick that appeared to be
+	causing a segv when the literal table was released
 
 	* tests/string.test:
-	* generic/tclCmdMZ.c: fixed [string index] to return ByteArrayObj
-	when indexing into one (test case string-5.16) [Bug: 2871]
+	* generic/tclCmdMZ.c: fixed [string index] to return ByteArrayObj when
+	indexing into one (test case string-5.16). [Bug 2871]
 
-	* library/http2.1/http.tcl: protected gets with catch [Bug: 2665]
+	* library/http2.1/http.tcl: protected gets with catch. [Bug 2665]
 
 1999-10-19  Jennifer Hom  <jenn@scriptics.com>
 
 	* tests/tcltest.test:
 	* doc/tcltest.n:
-	* library/tcltest1.0/tcltest.tcl: Removed the extra return at the
-	end of the tcltest.tcl file, added version information about tcl.
+	* library/tcltest1.0/tcltest.tcl: Removed the extra return at the end
+	of the tcltest.tcl file, added version information about tcl.
 
 	Applied patches sent in by Andreas Kupries to add helper procs for
 	debug output, add 3 new flags (-testsdir, -load, -loadfile), and
-	internally refactors common code for dealing with paths into
-	separate procedures. [Bug: 2838, 2842]
+	internally refactors common code for dealing with paths into separate
+	procedures. [Bug 2838, 2842]
 
 	Merged code from core-8-2-1 branch that changes the checks for the
-	value of tcl_interactive to also incorporate a check for the
-	existence of the variable.
+	value of tcl_interactive to also incorporate a check for the existence
+	of the variable.
 
 	* tests/autoMkindex.test:
-	* tests/pkgMkIndex.test: Explicitly cd to
-	::tcltest::testsDirectory at the beginning of the test run
+	* tests/pkgMkIndex.test: Explicitly cd to ::tcltest::testsDirectory at
+	the beginning of the test run
 
-	* tests/basic.test: Use version information defined in tcltest
-	instead of hardcoded version number
+	* tests/basic.test: Use version information defined in tcltest instead
+	of hardcoded version number
 
-	* tests/socket.test: package require tcltest before attempting to
-	use variable defined in tcltest namespace
+	* tests/socket.test: package require tcltest before attempting to use
+	variable defined in tcltest namespace
+
+	* tests/unixInit.test:
+	* tests/unixNotfy.test: Added explicit exits needed to avoid problems
+	when the tests area run in wish.
 
-	* tests/unixInit.test: 
-	* tests/unixNotfy.test: Added explicit exits needed to avoid
-	problems when the tests area run in wish.
-	
 1999-10-12  Jim Ingham  <jingham@scriptics.com>
 
 	* mac/tclMacLoad.c: Stupid bug - we converted the filename to
 	external, but used the unconverted version.
-	* mac/tclMacFCmd.c: Fix a merge error in the bug fix for [Bug: 2869]
+	* mac/tclMacFCmd.c: Fix a merge error in the bug fix for [Bug 2869]
 
 1999-10-12  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -423,21 +418,20 @@
 	* generic/tclRegexp.c:
 	* generic/tclTest.c:
 	* tests/reg.test: updated to Henry Spencer's new regexp engine
-	(mid-Sept 99).  Should greatly reduce stack space reqs.
+	(mid-Sept 99). Should greatly reduce stack space reqs.
 
 	* library/tcltest1.0/pkgIndex.tcl: fixed procs in pkgIndex.tcl file
 
 	* generic/tclEnv.c: fixed mem leak with putenv and DStrings
 	* doc/Encoding.3: corrected docs
 	* tests/basic.test: updated test cases for 8.3
-	* tests/encoding.test: fixed test case that change system
-	encoding to a double-byte one (this causes a bogus mem read
-	error for purify)
+	* tests/encoding.test: fixed test case that change system encoding to
+	a double-byte one (this causes a bogus mem read error for purify)
 	* unix/Makefile.in: purify has to use -best-effort to instrument
 	* unix/tclAppInit.c: identified potential mem leak when compiling
 	tcltest (not critical)
-	* unix/tclUnixPipe.c: fixed mem leak in TclpCreateProcess when
-	doing alloc between vfork and execvp.
+	* unix/tclUnixPipe.c: fixed mem leak in TclpCreateProcess when doing
+	alloc between vfork and execvp.
 	* unix/tclUnixTest.c: fixed mem leak in findexecutable test command
 
 1999-10-05  Jeff Hobbs  <hobbs@scriptics.com>
@@ -452,127 +446,126 @@
 	* library/http2.1/http.tcl: fixed possible use of global c var.
 
 	* win/tclWinReg.c: fixed registry command to properly 'get'
-	HKEY_PERFORMANCE_DATA root key data.  Needs more work.
-	
+	HKEY_PERFORMANCE_DATA root key data. Needs more work.
+
 	* generic/tclNamesp.c:
 	* generic/tclVar.c:
 	* generic/tclCmdIL.c: fixed comment typos
 
-	* mac/tclMacFCmd.c: fixed filename stuff to support UTF-8 [Bug: 2869]
+	* mac/tclMacFCmd.c: fixed filename stuff to support UTF-8. [Bug 2869]
 
-	* win/tclWinSerial.c: changed SerialSetOptionProc to return
-	TCL_OK by default. (patch from Rolf Schroedter)
+	* win/tclWinSerial.c: changed SerialSetOptionProc to return TCL_OK by
+	default. (patch from Rolf Schroedter)
 
 1999-09-21  Jennifer Hom  <jenn@scriptics.com>
 
-	* library/tcltest1.0/tcltest.tcl: Applied patches sent in by
-	Andreas Kupries to fix typos in comments and ::tcltest::grep,
-	fix hook redefinition problems, and change "string compare" to
-	"string equal." [Bug: 2836, 2837, 2839, 2840]
+	* library/tcltest1.0/tcltest.tcl: Applied patches sent in by Andreas
+	Kupries to fix typos in comments and ::tcltest::grep, fix hook
+	redefinition problems, and change "string compare" to "string equal".
+	[Bug 2836, 2837, 2839, 2840]
 
 1999-09-20  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* tests/env.test:
-	* unix/Makefile.in: added support for AIX LIBPATH env var [Bug:	2793]
+	* unix/Makefile.in: added support for AIX LIBPATH env var. [Bug 2793]
 	removed second definition of INCLUDE_INSTALL_DIR (the one that
-	referenced @includedir@) [Bug: 2805]
-	* unix/dltest/Makefile.in: added -lc to LIBS [Bug: 2794]
+	referenced @includedir@) [Bug 2805]
+	* unix/dltest/Makefile.in: added -lc to LIBS. [Bug 2794]
 
 1999-09-16  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* tests/timer.test: changed after delay in timer test 6.29 from
-	1 to 10. [Bug: 2796]
+	* tests/timer.test: changed after delay in timer test 6.29 from 1 to
+	10. [Bug 2796]
 
 	* tests/pkg.test:
 	* generic/tclPkg.c: fixed package version check to disallow 1.2..3
-	[Bug: 2539]
-
-	* unix/Makefile.in: fixed gendate target - this never worked
-	since RCS was intro'd.
-	* generic/tclGetDate.y: updated to reflect previous changes
-	to tclDate.c (leap year calc) and added CEST and UCT time zone
-	recognition.  Fixed 4 missing UCHAR() casts. [Bug: 2717, 954,
-	1245, 1249]
-
-	* generic/tclCkalloc.c: changed Tcl_DumpActiveMemory to really
-	dump to stderr and close it [Bug: 725] and changed Tcl_Ckrealloc
-	and Tcl_Ckfree to not bomb when NULL was passed in [Bug: 1719]
-	and changed Tcl_Alloc, et al to not panic when a alloc request
-	for zero came through and NULL was returned (valid on AIX, Tru64)
-	[Bug: 2795, etc]
+	[Bug 2539]
+
+	* unix/Makefile.in: fixed gendate target - this never worked since RCS
+	was intro'd.
+	* generic/tclGetDate.y: updated to reflect previous changes to
+	tclDate.c (leap year calc) and added CEST and UCT time zone
+	recognition. Fixed 4 missing UCHAR() casts. [Bug 2717, 954, 1245,
+	1249]
+
+	* generic/tclCkalloc.c: changed Tcl_DumpActiveMemory to really dump to
+	stderr and close it [Bug 725] and changed Tcl_Ckrealloc and
+	Tcl_Ckfree to not bomb when NULL was passed in [Bug 1719] and changed
+	Tcl_Alloc, et al to not panic when a alloc request for zero came
+	through and NULL was returned (valid on AIX, Tru64) [Bug 2795, etc]
 
 	* tests/clock.test:
 	* doc/clock.n:
-	* generic/tclClock.c: added -milliseconds switch to clock clicks
-	to guarantee that the return value of clicks is in the millisecs
-	granularity [Bug: 2682, 1332]
+	* generic/tclClock.c: added -milliseconds switch to clock clicks to
+	guarantee that the return value of clicks is in the millisecs
+	granularity. [Bug 2682, 1332]
 
 1999-09-15  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclIOCmd.c: fixed potential core dump in conjunction
-	with stacked channels with result obj manipulation in
-	Tcl_ReadChars [Bug: 2623]
+	* generic/tclIOCmd.c: fixed potential core dump in conjunction with
+	stacked channels with result obj manipulation in Tcl_ReadChars. [Bug
+	2623]
 
 	* tests/format.test:
-	* generic/tclCmdAH.c: fixed translation of %0#s in format [Bug: 2605]
+	* generic/tclCmdAH.c: fixed translation of %0#s in format. [Bug 2605]
 
-	* doc/msgcat.n: fixed \\ bug in example [Bug: 2548]
+	* doc/msgcat.n: fixed \\ bug in example. [Bug 2548]
 
 	* unix/tcl.m4:
-	* unix/aclocal.m4: added fix for FreeBSD-[1-2] recognition
-	[Bug: 2070] and fix for IRIX SHLIB_LB_LIBS. [Bug: 2610]
+	* unix/aclocal.m4: added fix for FreeBSD-[1-2] recognition [Bug 2070]
+	and fix for IRIX SHLIB_LB_LIBS. [Bug 2610]
 
 	* doc/array.n:
 	* tests/var.test:
 	* tests/set.test:
-	* generic/tclVar.c: added an array unset operation, with docs
-	and tests.  Variation of [Bug: 1775].  Added fix in TclArraySet
-	to check when trying to set in a non-existent namespace. [Bug: 2613]
+	* generic/tclVar.c: added an array unset operation, with docs and
+	tests. Variation of [Bug 1775]. Added fix in TclArraySet to check
+	when trying to set in a non-existent namespace. [Bug 2613]
 
 1999-09-14  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* tests/linsert.test:
 	* doc/linsert.n:
-	* generic/tclCmdIL.c: fixed end-int interpretation of linsert
-	to correctly calculate value for end, added test and docs [Bug: 2693]
+	* generic/tclCmdIL.c: fixed end-int interpretation of linsert to
+	correctly calculate value for end, added test and docs. [Bug 2693]
 
 	* doc/regexp.n:
 	* doc/regsub.n:
 	* tests/regexp.test:
-	* generic/tclCmdMZ.c: add -start switch to regexp and regsub
-	with docs and tests
+	* generic/tclCmdMZ.c: add -start switch to regexp and regsub with docs
+	and tests
 
 	* doc/switch.n: added proper use of comments to example.
-	* generic/tclCmdMZ.c: changed switch to complain when an error
-	occurs that seems to be due to a misplaced comment.
+	* generic/tclCmdMZ.c: changed switch to complain when an error occurs
+	that seems to be due to a misplaced comment.
 
-	* generic/tclCmdMZ.c: fixed illegal ref for \[0-9] substitutions
-	in regsub [Bug: 2723]
+	* generic/tclCmdMZ.c: fixed illegal ref for \[0-9] substitutions in
+	regsub. [Bug 2723]
 
-	* generic/tclCmdMZ.c: changed [string equal] to return an Int
-	type object (was a Boolean)
+	* generic/tclCmdMZ.c: changed [string equal] to return an Int type
+	object (was a Boolean)
 
 1999-09-01  Jennifer Hom  <jenn@scriptics.com>
 
-	* library/tcltest1.0/tcltest.tcl: Process command-line arguments
-	only ::tcltest doesn't have a child namespace (requires that
-	command-line args are processed in that namespace)
+	* library/tcltest1.0/tcltest.tcl: Process command-line arguments only
+	::tcltest doesn't have a child namespace (requires that command-line
+	args are processed in that namespace)
 
 1999-09-01  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclParseExpr.c: changed '"' to '\"' to make FreeBSD
-	happy [Bug: 2625]
-	* generic/tclProc.c: moved static buf to better location and
-	changed static msg that would overflow in ProcessProcResultCode
-	[Bug: 2483] and added Tcl_DStringFree to Tcl_ProcObjCmd.
-	Also reworked size of static buffers.
+	* generic/tclParseExpr.c: changed '"' to '\"' to make FreeBSD happy.
+	[Bug 2625]
+	* generic/tclProc.c: moved static buf to better location and changed
+	static msg that would overflow in ProcessProcResultCode [Bug 2483]
+	and added Tcl_DStringFree to Tcl_ProcObjCmd. Also reworked size of
+	static buffers.
 	* tests/stringObj.test: added test 9.11
-	* generic/tclStringObj.c: changed Tcl_AppendObjToObj to
-	properly handle the 1-byte dest and mixed src case where
-	both had had Unicode string len checks made on them.  [Bug: 2678]
+	* generic/tclStringObj.c: changed Tcl_AppendObjToObj to properly
+	handle the 1-byte dest and mixed src case where both had had Unicode
+	string len checks made on them. [Bug 2678]
 	* unix/aclocal.m4:
-	* unix/tcl.m4: adjusted fix from 8-21 to add -bnoentry to the
-	AIX-* case and readjusted the range
+	* unix/tcl.m4: adjusted fix from 8-21 to add -bnoentry to the AIX-*
+	case and readjusted the range
 
 1999-08-31  Jennifer Hom  <jenn@scriptics.com>
 
@@ -588,79 +581,76 @@
 	* tests/exec.test:
 	* tests/io.test:
 	* tests/event.test:
-	* tests/tcltest.test: Added 'exit' calls to scripts that the tests 
+	* tests/tcltest.test: Added 'exit' calls to scripts that the tests
 	themselves write, and removed accidental checkin of knownBugThreaded
 	constraints for Solaris and Linux.
-	
-	* library/tcltest1.0/tcltest.tcl:  Modified tcltest so that
-	variables are only initialized to their default values if they did
-	not previously exist. 
+
+	* library/tcltest1.0/tcltest.tcl: Modified tcltest so that variables
+	are only initialized to their default values if they did not
+	previously exist.
 
 1999-08-26  Jennifer Hom  <jenn@scriptics.com>
 
 	* tests/tcltest.test:
-	* library/tcltest1.0/tcltest.tcl:  Added a -args flag that sets a
-	variable named ::tcltest::parameters based on whatever's being
-	sent in as the argument to the -args flag. 
+	* library/tcltest1.0/tcltest.tcl: Added a -args flag that sets a
+	variable named ::tcltest::parameters based on whatever's being sent in
+	as the argument to the -args flag.
 
 1999-08-23  Jennifer Hom  <jenn@scriptics.com>
 
-	* tests/tcltest.test: Added additional tests for -tmpdir, marked
-	all tests that use exec as unixOrPc.
+	* tests/tcltest.test: Added additional tests for -tmpdir, marked all
+	tests that use exec as unixOrPc.
 
 	* tests/encoding.test:
-	* tests/interp.test: 
+	* tests/interp.test:
 	* tests/macFCmd.test:
 	* tests/parseOld.test:
-	* tests/regexp.test: Applied patches from Jim Ingham to add
-	encoding to a Mac only interp test, change an error message in
-	macFCmd.tet, put a comment in parseOld.test, fix tests using the
-	testencoding path command, and put unixOrPc constraints on tests
-	that use exec. 
+	* tests/regexp.test: Applied patches from Jim Ingham to add encoding
+	to a Mac only interp test, change an error message in macFCmd.tet, put
+	a comment in parseOld.test, fix tests using the testencoding path
+	command, and put unixOrPc constraints on tests that use exec.
 
 1999-08-21  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* unix/aclocal.m4: Changed AIX-4.[2-9] check to AIX-4.[1-9]
-	[Bug: 1909]
+	* unix/aclocal.m4: Changed AIX-4.[2-9] check to AIX-4.[1-9] [Bug 1909]
 
 1999-08-20  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclPosixStr.c: fixed typo [Bug: 2592]
+	* generic/tclPosixStr.c: fixed typo. [Bug 2592]
 
-	* doc/*: fixed various nroff bugs in man pages [Bug: 2503 2588]
+	* doc/*: fixed various nroff bugs in man pages. [Bug 2503 2588]
 
 1999-08-19  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* win/README.binary: fixed version info and some typos [Bug: 2561]
-	
+	* win/README.binary: fixed version info and some typos. [Bug 2561]
+
 	* doc/interp.n: updated list of commands available in a safe
-	interpreter [Bug: 2526]
+	interpreter. [Bug 2526]
 
 	* generic/tclIO.c: changed Tcl_GetChannelNames* to use style guide
 	headers (pleases HP cc)
 
 1999-08-18  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* doc/Eval.3: fixed doc on input args [Bug: 2114]
+	* doc/Eval.3: fixed doc on input args. [Bug 2114]
 
 	* doc/OpenFileChnl.3:
 	* doc/file.n:
 	* tests/cmdAH.test:
 	* tclIO.c:
 	* tclCmdAH.c: added "file channels ?pattern?" tcl command, with
-	associated Tcl_GetChannelNames and Tcl_GetChannelNamesEx public
-	C APIs (added to tcl.decls as well), with docs and tests.
+	associated Tcl_GetChannelNames and Tcl_GetChannelNamesEx public C APIs
+	(added to tcl.decls as well), with docs and tests.
 
 	* tests/expr.test:
-	* generic/tclCompile.c: add TCL_TOKEN_VARIABLE to the part types
-	that cause differed compilation for exprs, to correct the expr
-	double-evaluation problem for vars.  Added test cases.
-	Related to [Bug: 732]
-
-	* unix/Makefile.in: changed the dependency structure so that
-	install-* is dependent on * (ie - install-binaries is dependent
-	on binaries).
-	
+	* generic/tclCompile.c: add TCL_TOKEN_VARIABLE to the part types that
+	cause differed compilation for exprs, to correct the expr
+	double-evaluation problem for vars. Added test cases. Related to [Bug
+	732]
+
+	* unix/Makefile.in: changed the dependency structure so that install-*
+	is dependent on * (ie - install-binaries is dependent on binaries).
+
 	* library/auto.tcl:
 	* library/init.tcl:
 	* library/ldAout.tcl:
@@ -668,14 +658,13 @@
 	* library/safe.tcl:
 	* library/word.tcl:
 	* library/http2.1/http.tcl:
-	* library/msgcat1.0/msgcat.tcl: updated libraries to better
-	Tcl style guide (no more string comparisons with == or !=, spacing
-	changes).
+	* library/msgcat1.0/msgcat.tcl: updated libraries to better Tcl style
+	guide (no more string comparisons with == or !=, spacing changes).
 
 1999-08-05  Jim Ingham  <jingham@cygnus.com>
 
 	* mac/tclMacProjects.sea.hqx: Rearrange the projects so that the build
-	directory is separate from the sources.	 Much more convenient!
+	directory is separate from the sources. Much more convenient!
 
 1999-08-13  Scott Redman <redman@scriptics.com>
 
@@ -683,18 +672,18 @@
 
 1999-08-12  Scott Stanton  <stanton@scriptics.com>
 
-	* win/Makefile.in: Added COMPILE_DEBUG_FLAGS macro to make it
-	easier to turn on compiler tracing.
+	* win/Makefile.in: Added COMPILE_DEBUG_FLAGS macro to make it easier
+	to turn on compiler tracing.
 
-	* tests/parse.test: 
-	* generic/tclParse.c: Fixed bug in Tcl_EvalEx where the termOffset
-	was not being updated in cases where the evaluation returned a non
-	TCL_OK error code. [Bug: 2535]
+	* tests/parse.test:
+	* generic/tclParse.c: Fixed bug in Tcl_EvalEx where the termOffset was
+	not being updated in cases where the evaluation returned a non TCL_OK
+	error code. [Bug 2535]
 
 1999-08-12  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinSerial.c: Applied patch from Petteri Kettunen to
-	remove compiler warning.
+	* win/tclWinSerial.c: Applied patch from Petteri Kettunen to remove
+	compiler warning.
 
 1999-08-10  Scott Redman  <redman@scriptics.com>
 
@@ -707,12 +696,12 @@
 	Windows (and he fixed the bug in the Unix thread implementation).
 
 1999-08-09  Brent Welch  <welch@scriptics.com>
-        
+
 	* generic/tcl.decls:
 	* generic/tclAlloc.c:
 	* generic/tclCkalloc.c:
 	* generic/tclCmdIL.c:
-	* generic/tclDecls.h: 
+	* generic/tclDecls.h:
 	* generic/tclIO.c:
 	* generic/tclInt.decls:
 	* generic/tclIntDecls.h:
@@ -720,12 +709,11 @@
 	* generic/tclVar.c:
 	* mac/tclMacThrd.c:
 	* unix/tclUnixThrd.c:
-	* win/tclWinThrd.c: Added use of Tcl_GetAllocMutex to tclAlloc.c
-	and tclCkalloc.c so they can be linked against alternate thread
-	packages. Added Tcl_GetChannelNames to tclIO.c.	Added
-	TclVarTraceExists hook so "info exists" triggers read traces
-	exactly like it did in Tcl 7.6. Stubs table changes to reflect new
-	internal and external APIs.
+	* win/tclWinThrd.c: Added use of Tcl_GetAllocMutex to tclAlloc.c and
+	tclCkalloc.c so they can be linked against alternate thread packages.
+	Added Tcl_GetChannelNames to tclIO.c. Added TclVarTraceExists hook so
+	"info exists" triggers read traces exactly like it did in Tcl 7.6.
+	Stubs table changes to reflect new internal and external APIs.
 
 1999-08-09  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -733,36 +721,36 @@
 	machines and int overflow testing.
 	* tests/tcltest.test: fixed minor error in 8.2 result (from dgp)
 
-	* doc/Object.3: clarified Tcl_DecrRefCount docs [Bug: 1952]
-	* doc/array.n: clarified array pattern docs [Bug: 1330]
-	* doc/clock.n: fixed clock docs [Bug: 693]
+	* doc/Object.3: clarified Tcl_DecrRefCount docs. [Bug 1952]
+	* doc/array.n: clarified array pattern docs. [Bug 1330]
+	* doc/clock.n: fixed clock docs. [Bug 693]
 	* doc/lindex.n: clarified to account for new end-int behavior.
-	* doc/string.n: fixed formatting errors [Bug: 2188 2189]
-	* doc/tclvars.n: fixed doc error [Bug: 2042]
-	* library/init.tcl: fixed path handling in auto_execok (it could
-	miss including the normal path on some Windows machines) [Bug: 1276]
+	* doc/string.n: fixed formatting errors. [Bug 2188 2189]
+	* doc/tclvars.n: fixed doc error. [Bug 2042]
+	* library/init.tcl: fixed path handling in auto_execok (it could miss
+	including the normal path on some Windows machines). [Bug 1276]
 
 1999-08-05  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* doc/tclvars.n: Made it clear that tcl_pkgPath was not set
-	for Windows (already mentioned in init.tcl) [Bug: 2455]
-	* generic/tclLiteral.c: fixed reference to bytes that might
-	not be null terminated (using objPtr->bytes, which is) [Bug: 2496]
-	* library/http2.1/http.tcl: Made use of "i" in init section use
-	local var and start at 0 (was 1). [Bug: 2502]
+	* doc/tclvars.n: Made it clear that tcl_pkgPath was not set for
+	Windows (already mentioned in init.tcl). [Bug 2455]
+	* generic/tclLiteral.c: fixed reference to bytes that might not be
+	null terminated (using objPtr->bytes, which is). [Bug 2496]
+	* library/http2.1/http.tcl: Made use of "i" in init section use local
+	var and start at 0 (was 1). [Bug 2502]
 
 1999-08-04  Scott Stanton  <stanton@scriptics.com>
 
 	* tests/reg.test: Added test for REG_EXPECT bug fixed by Henry's
 	patch.
 
-	* generic/regc_nfa.c: 
-	* generic/regcomp.c: 
+	* generic/regc_nfa.c:
+	* generic/regcomp.c:
 	* generic/rege_dfa.c:
-	* generic/regexec.c: 
+	* generic/regexec.c:
 	* generic/regguts.h: Applied patches supplied by Henry Spencer to
 	greatly enhance the performance of certain classes of regular
-	expressions. [Bug: 2440, 2447]
+	expressions. [Bug 2440, 2447]
 
 1999-08-03  Scott Redman  <redman@scriptics.com>
 
@@ -773,7 +761,7 @@
 
 	* unix/configure.in:
 	* win/configure.in: Change beta level to b2.
-	
+
 	* generic/tcl.h:
 	* generic/tcl.decls:
 	* generic/tclDecls.h:
@@ -782,104 +770,101 @@
 	* generic/tclIntDecls.h:
 	* generic/tclRegexp.h:
 	* generic/tclStubInit.c: Move some exported public and internal
-	functions to the stub tables.  Removed functions that are in the
-	stub tables (from this and previous changes) from the original
-	header files.
+	functions to the stub tables. Removed functions that are in the stub
+	tables (from this and previous changes) from the original header
+	files.
 
 1999-08-01  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinSock.c: Added comment block to SocketThread()
-	function.  Added code to avoid calling TerminateThread(), but
-	instead to send a message to the socket event window to tell it to
-	terminate its thread.
+	* win/tclWinSock.c: Added comment block to SocketThread() function.
+	Added code to avoid calling TerminateThread(), but instead to send a
+	message to the socket event window to tell it to terminate its thread.
 
 1999-07-30  Jennifer Hom  <jenn@scriptics.com>
 
 	* tests/tcltest.test:
-	* library/tcltest1.0/tcltest.tcl: Exit with non-zero status if
-	there were problems with the way the test suite was started
-	(e.g. wrong # arguments).  
+	* library/tcltest1.0/tcltest.tcl: Exit with non-zero status if there
+	were problems with the way the test suite was started (e.g. wrong #
+	arguments).
 
 1999-07-30  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclInt.decls: added declaractions necessary for the
-	Tcl test code to work wth stubs [Bug: 2445]
+	* generic/tclInt.decls: added declaractions necessary for the Tcl test
+	code to work wth stubs. [Bug 2445]
 
-1999-07-30    <redman@scriptics.com>
+1999-07-30  Scott Redman  <redman@scriptics.com>
 
 	* win/tclWinPipe.c:
-	* win/Makefile.in: Fixing launching of 16-bit apps on Win9x from
-	wish.  The command line was primed with tclpip82.dll, but it was
-	ignored.  Fixed that, then fixed the gmake makefile to build
-	tclpip82.dll as an executable.
+	* win/Makefile.in: Fixing launching of 16-bit apps on Win9x from wish.
+	The command line was primed with tclpip82.dll, but it was ignored.
+	Fixed that, then fixed the gmake makefile to build tclpip82.dll as an
+	executable.
 
-	* win/tclWinSock.c: Applied small patch to get thread-specific
-	data after initializing the socket driver.
+	* win/tclWinSock.c: Applied small patch to get thread-specific data
+	after initializing the socket driver.
 
-	* unix/tclUnixThrd.c: Applied patch to fix threads on Irix 6.5.
-	Patch from James Dennett.  [Bug: 2450]
+	* unix/tclUnixThrd.c: Applied patch to fix threads on Irix 6.5. Patch
+	from James Dennett. [Bug 2450]
 
-	* tests/info.test: Enable test for tclParse.c change (info
-	complete).
-	
-1999-07-30    <hobbs@scriptics.com>
+	* tests/info.test: Enable test for tclParse.c change (info complete).
+
+1999-07-30  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* tclIO.c: added fix for Kupries' trf patch [Bug: 2386]
+	* tclIO.c: added fix for Kupries' trf patch. [Bug 2386]
 
 	* tclParse.c: fixed bug in info complete regarding nested square
-	brackets [Bug: 2382, 2466]
-	
-1999-07-29    <redman@scriptics.com>
+	brackets. [Bug 2382, 2466]
+
+1999-07-29  Scott Redman  <redman@scriptics.com>
 
 	* win/tclWinChan.c: Allow tcl to open CON and NUL, even for std
-	channels.  Checking for bad/unusable std channels was moved to Tk
-	since its only purpose was to check whether to use the Tk Console
-	Window for the std channels.  [Bug: 2393 2392 2209 2458]
+	channels. Checking for bad/unusable std channels was moved to Tk since
+	its only purpose was to check whether to use the Tk Console Window for
+	the std channels. [Bug 2393 2392 2209 2458]
 
 	* unix/mkLinks.tcl: Applied patch to avoid linking pack.n to
-	pack-old.n.  Patch from Don Porter. [Bug: 2469]
+	pack-old.n. Patch from Don Porter. [Bug 2469]
+
+	* doc/Encoding.n: Applied patch to fix typo in .SH NAME line. Patch
+	from Don Porter. [Bug 2451]
 
-	* doc/Encoding.n: Applied patch to fix typo in .SH NAME line.
-	Patch from Don Porter.  [Bug: 2451]
-	
-	* win/tclWinSock.c:  Free Win32 Event handles when destroying
-	the socket helper thread.
+	* win/tclWinSock.c: Free Win32 Event handles when destroying the
+	socket helper thread.
 
-1999-07-28    <jenn@scriptics.com>
+1999-07-28  Jennifer Hom  <jenn@scriptics.com>
 
 	* tests/tcltest.test:
 	* library/tcltest1.0/tcltest.tcl: Fixed the condition under which
-	::tcltest::PrintError had an infinite loop problem and added a
-	test case for it.  Added an optional argument to
-	::tcltest::getMatchingFiles telling it where to search for test
-	files. 
+	::tcltest::PrintError had an infinite loop problem and added a test
+	case for it. Added an optional argument to ::tcltest::getMatchingFiles
+	telling it where to search for test files.
 
-1999-07-27    <redman@scriptics.com>
+1999-07-27  Scott Redman  <redman@scriptics.com>
 
-	* tools/tclSplash.bmp:  Updated Windows installer bitmap
-	to ready Tcl/Tk Version 8.2.
+	* tools/tclSplash.bmp: Updated Windows installer bitmap to ready
+	Tcl/Tk Version 8.2.
 
-1999-07-26    <redman@scriptics.com>
+1999-07-26  Scott Redman  <redman@scriptics.com>
 
-	* tests/tcltest.test:  Need to close the new core file, there
-	seems to be a hang in threaded WinNT if the file isn't closed.
-	Open issue, need to fix that hang.
+	* tests/tcltest.test: Need to close the new core file, there seems to
+	be a hang in threaded WinNT if the file isn't closed. Open issue, need
+	to fix that hang.
 
-	* tests/httpold.test:  Add time delay in response from Http server
-	so that test cases can properly detect timeout conditions with
-	threads enabled on multi-CPU WinNT.
+	* tests/httpold.test: Add time delay in response from Http server so
+	that test cases can properly detect timeout conditions with threads
+	enabled on multi-CPU WinNT.
 
-	* tests/winFCmd.test:  Test case winFcmd-1.33 was looking for
-	c:\windows, which may not exist.  Instead, create a new directory
-	on c:\ and use it for the test.
+	* tests/winFCmd.test: Test case winFcmd-1.33 was looking for
+	c:\windows, which may not exist. Instead, create a new directory on
+	c:\ and use it for the test.
 
 	* win/tclWinConsole.c:
 	* win/tclWinPipe.c:
-	* win/tclWinSock.c:  Fix terminating helper threads by holding any
-	mutexes from the primary thread while waiting for the helper
-	thread to terminate.  Without these changes, the test suite hangs
-	on WinNT with 2 CPUs and threads enabled.  Open issue, seems to be
-	a sporadic hang on dual CPU systems still (very rare).
+	* win/tclWinSock.c: Fix terminating helper threads by holding any
+	mutexes from the primary thread while waiting for the helper thread to
+	terminate. Without these changes, the test suite hangs on WinNT with 2
+	CPUs and threads enabled. Open issue, seems to be a sporadic hang on
+	dual CPU systems still (very rare).
 
 1999-07-26  Jennifer Hom  <jenn@scriptics.com>
 
@@ -888,92 +873,91 @@
 	* doc/tcltest.n: Cleaned up code in ::tcltest::PrintError, revised
 	documentation, and added tests for the tcltest package.
 
-1999-07-23    <redman@scriptics.com>
+1999-07-23  Scott Redman  <redman@scriptics.com>
 
 	* tests/info.test:
-	* generic/tclParse.c:  Removed patch for info command, breaks test
-	cases on Unix.  Patch was bad and needs to be redone
-	properly. [Bug: 2382]
+	* generic/tclParse.c: Removed patch for info command, breaks test
+	cases on Unix. Patch was bad and needs to be redone properly. [Bug
+	2382]
 
-1999-07-22    <redman@scriptics.com>
+1999-07-22  Scott Redman  <redman@scriptics.com>
 
 	* Changed version to 8.2b2.
 
-	* win/tclWinSock.c: Fixed hang with threads enabled, fixed
-	semaphores with threads disabled.
+	* win/tclWinSock.c: Fixed hang with threads enabled, fixed semaphores
+	with threads disabled.
 
 	* win/safe.test: Fixed safe-6.3 with threads enabled.
-	
-	* win/Makefile.in:  Fixed calling of tcltest to fix safe.test
-	failures due to path TCL_LIBRARY path.
 
-	* win/tclWinPort.h: Block out include of sys/*.h in order to
-	build extensions with MetroWerks compiler for Win32. [Bug: 2385]
-	
+	* win/Makefile.in: Fixed calling of tcltest to fix safe.test failures
+	due to path TCL_LIBRARY path.
+
+	* win/tclWinPort.h: Block out include of sys/*.h in order to build
+	extensions with MetroWerks compiler for Win32. [Bug 2385]
+
 	* generic/tclCmdMZ.c:
 	* generic/tclIO.c: Fix ANSI-style prototypes based on patch from
-	Ulrich Ring.  [Bug: 2391]
-	
-	* unix/Makefile.in: Need to make install-sh executable before
-	calling (with chmod +x).  [Bug: 2413]
-	
+	Ulrich Ring. [Bug 2391]
+
+	* unix/Makefile.in: Need to make install-sh executable before calling
+	(with chmod +x). [Bug 2413]
+
 	* tests/var.test:
-	* generic/tclVar.c:  Fixed bug that caused a seg. fault when using
-	"array set a(b) {}", which is a bad array name anyway.  Now the
-	"array set" command will return an error in this case.  Added test
-	case and fixed existing test. [Bug: 2427]
+	* generic/tclVar.c: Fixed bug that caused a seg. fault when using
+	"array set a(b) {}", which is a bad array name anyway. Now the "array
+	set" command will return an error in this case. Added test case and
+	fixed existing test. [Bug 2427]
 
-1999-07-21    <redman@scriptics.com>
+1999-07-21  Scott Redman  <redman@scriptics.com>
 
 	* tests/info.test:
-	* generic/tclParse.c:  Applied patch to fix "info complete"
-	for the string {[a [b]}.  Patch from Peter Spjuth. [Bug: 2382]
+	* generic/tclParse.c: Applied patch to fix "info complete" for the
+	string {[a [b]}. Patch from Peter Spjuth. [Bug 2382]
 
 	* doc/Utf.3:
 	* generic/tcl.decls:
 	* generic/tclDecls.h:
 	* generic/tclUtf.c: Changed function declarations in
 	non-platform-specific public APIs to use "unsigned long" instead of
-	"size_t", which may not be defined on certain compilers (rather
-	than include sys/types.h, which may not exist).
-	
+	"size_t", which may not be defined on certain compilers (rather than
+	include sys/types.h, which may not exist).
+
 	* unix/Makefile.in: Added the Windows configure script to the
 	distribution file list, already shipping configure.in and the .m4
 	files, but needed the configure script itself.
-	
+
 	* win/makefile.vc: Changed version number of DDE package in VC++
 	makefile to use 1.1 instead of 1.0.
 
 	* doc/open.n: Added documentation of \\.\comX notation for opening
 	serial ports on Windows (alternative to comX:).
-	
+
 	* tests/ioCmd.test:
 	* doc/open.n:
 	* win/tclWinSerial.c: Applied patch from Rolf Schroedter to add
-	-pollinterval option to fconfigure to modify the maxblocktime used
-	in the fileevent polling. Added documentation and fixed the test
-	case as well.
-	
-	* win/tclWinSock.c: Modified 8.1.0 version of the Win32 socket
-	driver to move the handling of the socket event window in a
-	separate thread.  It also turned out that Win95 & Win98 were, in
-	some cases, getting multiple FD_ACCEPTs but only handling one.
-	Added a count for the FD_ACCEPT to take care of this.  Tested on
-	NT4 SP3, NT4 SP4, Win95, and Win98.
-	[Bug: 2178 2256 2259 2329 2323 2355]
-
-1999-07-21    <jpeek@scriptics.com>
+	-pollinterval option to fconfigure to modify the maxblocktime used in
+	the fileevent polling. Added documentation and fixed the test case as
+	well.
+
+	* win/tclWinSock.c: Modified 8.1.0 version of the Win32 socket driver
+	to move the handling of the socket event window in a separate thread.
+	It also turned out that Win95 & Win98 were, in some cases, getting
+	multiple FD_ACCEPTs but only handling one. Added a count for the
+	FD_ACCEPT to take care of this. Tested on NT4 SP3, NT4 SP4, Win95, and
+	Win98. [Bug 2178 2256 2259 2329 2323 2355]
+
+1999-07-21  Jerry Peek  <jpeek@scriptics.com>
 
 	* README: Small tweaks to clean up typos and wording.
 
 1999-07-20  Melissa Hirschl  <hershey@matisse.scriptics.com>
 
-	* generic/tclInitScript.h: 
-	* unix/tclUnixInit.c: merged code with 8.0.5.  We now use an
+	* generic/tclInitScript.h:
+	* unix/tclUnixInit.c: merged code with 8.0.5. We now use an
 	intermediate global tcl var "tclDefaultLibrary" to keep the
-	"tcl_library" var from being set by the default value in the
-	Makefile.  Also fixed a bug in which caused the value of
-	TCL_LIBRARY env var to be ignored.
+	"tcl_library" var from being set by the default value in the Makefile.
+	Also fixed a bug in which caused the value of TCL_LIBRARY env var to
+	be ignored.
 	* unix/tclWinInit.c: just updated some comments.
 
 1999-07-19  Melissa Hirschl  <hershey@matisse.scriptics.com>
@@ -981,119 +965,115 @@
 	* library/http2.1/http.tcl: updated -useragent text to say version
 	2.1.
 
-1999-07-16    <redman@scriptics.com>
+1999-07-16  Scott Redman  <redman@scriptics.com>
 
 	* generic/tcl.decls:
 	* generic/tclDecls.h:
-	* generic/tclStubInit.c:  Add Tcl_SetNotifier to stub table.
-	[Bug: 2364]
-	
+	* generic/tclStubInit.c: Add Tcl_SetNotifier to stub table. [Bug 2364]
+
 	* unix/aclocal.m4:
-	* unix/tcl.m4:  Add check for Alpha/Linux to correct the IEEE
-	floating flag to the compiler, should be -mieee.  Patch from Don
-	Porter.
-	
-	* tools/tcl.hpj.in: Change version number of .cnt file referenced
-	in .HPJ file.
-
-1999-07-15    <redman@scriptics.com>
-	
+	* unix/tcl.m4: Add check for Alpha/Linux to correct the IEEE floating
+	flag to the compiler, should be -mieee. Patch from Don Porter.
+
+	* tools/tcl.hpj.in: Change version number of .cnt file referenced in
+	.HPJ file.
+
+1999-07-15  Scott Redman  <redman@scriptics.com>
+
 	* tools/tcl.wse.in: Fixed naming of target files for Windows.
 
-1999-07-14    <jpeek@scriptics.com>
+1999-07-14  Jerry Peek  <jpeek@scriptics.com>
 
 	* doc/re_syntax.n: Deleted sentence as suggested by Scott S.
 
-1999-07-12    <jpeek@scriptics.com>
+1999-07-12  Jerry Peek  <jpeek@scriptics.com>
 
-	* doc/re_syntax.n: Removed two notes to myself (oops), cleaned
-	up wording, fixed changebars, made two examples easier to read.
+	* doc/re_syntax.n: Removed two notes to myself (oops), cleaned up
+	wording, fixed changebars, made two examples easier to read.
 
-1999-07-11    <redman@scriptics.com>
+1999-07-11  Scott Redman  <redman@scriptics.com>
 
-	* win/makefile.vc: Since the makefile.vc should continue to work
-	while we're working out bugs/issues in the new TEA-style
+	* win/makefile.vc: Since the makefile.vc should continue to work while
+	we're working out bugs/issues in the new TEA-style
 	autoconf/configure/gmake build mechanism for Windows, the version
-	numbers of the Tcl libraries need to remain in sync.  Modified the
+	numbers of the Tcl libraries need to remain in sync. Modified the
 	version numbers in the makefile to reflect the change to 8.2b1.
 
-1999-07-09    <redman@scriptics.com>
+1999-07-09  Scott Redman  <redman@scriptics.com>
 
-	* win/configure.in: Eval DLLSUFFIX, LIBSUFFIX, and EXESUFFIX in
-	the configure script so that substitutions get expanded before
-	being placed in the Makefile.  The "d" portion for debug libraries
-	and DLLs was not being set properly.
-	
-1999-07-08    <stanton@scriptics.com>
+	* win/configure.in: Eval DLLSUFFIX, LIBSUFFIX, and EXESUFFIX in the
+	configure script so that substitutions get expanded before being
+	placed in the Makefile. The "d" portion for debug libraries and DLLs
+	was not being set properly.
 
-	* tests/string.test: 
-	* generic/tclCmdMZ.c: Fixed bug in string range bounds checking
-	code.
+1999-07-08  Scott Stanton  <stanton@scriptics.com>
+
+	* tests/string.test:
+	* generic/tclCmdMZ.c: Fixed bug in string range bounds checking code.
 
 1999-07-08  Jennifer Hom  <jenn@scriptics.com>
 
 	* doc/tcltest.n:
 	* library/tcltest1.0/tcltest.tcl: Removed -asidefromdir and
-	-relateddir flags, removed unused ::tcltest::dotests proc, cleaned
-	up implementation of core file checking, and fixed the code that
-	checks for 1-letter flag abbreviations.
+	-relateddir flags, removed unused ::tcltest::dotests proc, cleaned up
+	implementation of core file checking, and fixed the code that checks
+	for 1-letter flag abbreviations.
 
-1999-07-08    <stanton@scriptics.com>
+1999-07-08  Scott Stanton  <stanton@scriptics.com>
 
-	* win/Makefile.in: Added tcltest target so runtest works
-	properly.  Added missing names to the clean/distclean targets.
+	* win/Makefile.in: Added tcltest target so runtest works properly.
+	Added missing names to the clean/distclean targets.
 
-	* tests/reg.test: 
-	* generic/rege_dfa.c: Applied fix supplied by Henry Spencer for
-	bug in DFA state caching under lookahead conditions.  [Bug: 2318]
+	* tests/reg.test:
+	* generic/rege_dfa.c: Applied fix supplied by Henry Spencer for bug in
+	DFA state caching under lookahead conditions. [Bug 2318]
 
-1999-07-07    <stanton@scriptics.com>
+1999-07-07  Scott Stanton  <stanton@scriptics.com>
 
 	* doc/fconfigure.n: Clarified default buffering behavior for the
-	standard channels. [Bug: 2335]
+	standard channels. [Bug 2335]
 
-1999-07-06    <redman@scriptics.com>
+1999-07-06  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinSerial.c:  New implementation of serial port driver
-	from Rolf Shroedter (Rolf.Schroedter@dlr.de) that allows more than
-	one byte to be read from the port.  Implemented using polling
-	instead of threads, there is a max. 10ms latency between checking the
-	port for file events.  [Bug: 1980 2217]
+	* win/tclWinSerial.c: New implementation of serial port driver from
+	Rolf Shroedter (Rolf.Schroedter@dlr.de) that allows more than one byte
+	to be read from the port. Implemented using polling instead of
+	threads, there is a max. 10ms latency between checking the port for
+	file events. [Bug 1980 2217]
 
-1999-07-06    <welch@scriptics.com>
+1999-07-06  Brent Welch  <welch@scriptics.com>
 
-	* library/http2.0/http.tcl: Fixed the -timeout option so it
-	handles timeouts that occur during connection attempts to
-	hosts that are down (the only case that really matters!)
+	* library/http2.0/http.tcl: Fixed the -timeout option so it handles
+	timeouts that occur during connection attempts to hosts that are down
+	(the only case that really matters!)
 
-1999-07-03    <welch@scriptics.com>
+1999-07-03  Brent Welch  <welch@scriptics.com>
 
 	* doc/ChnlStack.3:
 	* generic/tcl.decls:
-	* generic/tclIO.c: Added a new variant of the "Trf patch"
-	from Andreas Kupres that adds new C APIs Tcl_StackChannel,
-	Tcl_UnstackChannel, and Tcl_GetStackedChannel.
+	* generic/tclIO.c: Added a new variant of the "Trf patch" from Andreas
+	Kupres that adds new C APIs Tcl_StackChannel, Tcl_UnstackChannel, and
+	Tcl_GetStackedChannel.
 
-1999-07-03    <welch@scriptics.com>
+1999-07-03  Brent Welch  <welch@scriptics.com>
 
 	* generic/tclNotify.c:
 	* unix/tclUnixNotfy.c:
 	* unix/tclXtTest.c:
 	* unix/tclXtNotify.c:
 	* win/tclWinNotify.c:
-	* mac/tclMacNotify.c: Added Tcl_SetNotifier and the associated
-	hook points in the notifiers to be able to replace the notifier
-	calls at runtime  The Xt notifier and test program use this hook.
+	* mac/tclMacNotify.c: Added Tcl_SetNotifier and the associated hook
+	points in the notifiers to be able to replace the notifier calls at
+	runtime. The Xt notifier and test program use this hook.
 
-1999-07-03    <welch@scriptics.com>
+1999-07-03  Brent Welch  <welch@scriptics.com>
 
-	* generic/tclParse.c: Changed parsing of variable names to
-	allow empty array names.  Now "$(foo)" is a variable reference!
-	Previous you had to use something like $::(foo), which is slower.
-	This change is requested by Jean-Luc Fontaine for his STOOOP
-	package.
+	* generic/tclParse.c: Changed parsing of variable names to allow empty
+	array names. Now "$(foo)" is a variable reference! Previous you had to
+	use something like $::(foo), which is slower. This change is requested
+	by Jean-Luc Fontaine for his STOOOP package.
 
-1999-07-01    <redman@scriptics.com>
+1999-07-01  Scott Redman  <redman@scriptics.com>
 
 	* generic/tclCmdAH.c:
 	* generic/tclFCmd.c: Call TclStat instead of TclpStat in order to
@@ -1104,30 +1084,27 @@
 	* library/tcltest1.0/pkgIndex.tcl:
 	* library/tcltest1.0/tcltest.tcl:
 	* doc/tcltest.n:
-	* tests/all.tcl: Added -preservecore, -limitconstraints, -help,
-	-file, -notfile, -relateddir and -asidefromdir flags to the
-	tcltest package along with exported proc
-	::tcltest::getMatchingFiles.  The documentation was modified to
-	match and all.tcl was modified to use the new functionality
-	instead of implementing -file itself. 
+	* tests/all.tcl: Added -preservecore, -limitconstraints, -help, -file,
+	-notfile, -relateddir and -asidefromdir flags to the tcltest package
+	along with exported proc ::tcltest::getMatchingFiles. The
+	documentation was modified to match and all.tcl was modified to use
+	the new functionality instead of implementing -file itself.
 
-1999-06-28    <redman@scriptics.com>
+1999-06-28  Scott Redman  <redman@scriptics.com>
 
 	* generic/tclIndexObj.c:
 	* doc/GetIndex.3:
 	* tests/binary.test:
-	* tests/winDde.test: Applied patch from Peter Hardie (with
-	changes) to fix problem with Tcl_GetIndexFromObj() when the key
-	being passed is the empty string.  It used to match "" and return
-	TCL_OK, but it should have returned TCL_ERROR instead.  Added test
-	case to "binary" and "dde" commands to check the behavior.  Added
-	documentation note as well.
+	* tests/winDde.test: Applied patch from Peter Hardie (with changes) to
+	fix problem with Tcl_GetIndexFromObj() when the key being passed is
+	the empty string. It used to match "" and return TCL_OK, but it should
+	have returned TCL_ERROR instead. Added test case to "binary" and "dde"
+	commands to check the behavior. Added documentation note as well.
 
-1999-06-26    <redman@scriptics.com>
+1999-06-26  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinDde.c: Applied patch from Peter Hardie to add poke
-	command to dde.  Also rev'd version of dde package to 1.1.
-	[Bug: 1738]
+	* win/tclWinDde.c: Applied patch from Peter Hardie to add poke command
+	to dde. Also rev'd version of dde package to 1.1. [Bug 1738]
 
 1999-06-25  Jennifer Hom  <jenn@scriptics.com>
 
@@ -1136,25 +1113,24 @@
 	* library/tcltest1.0/pkgIndex.tcl:
 	* library/tcltest1.0/tcltest.tcl:
 	* library/tcltest1.0: Added initial implementation of the Tcl test
-	harness package.  This package was based on the defs.tcl file that
-	was part of the tests directory. Reversed the way that tests were
+	harness package. This package was based on the defs.tcl file that was
+	part of the tests directory. Reversed the way that tests were
 	evaluated to fix a problem with false passes.
 
 	* doc/tcltest.n: Added documentation for the tcltest package.
 
 	* tests/README:
 	* tests/defs.tcl:
-	* tests/all.tcl: Modified all test files (tests/*.test) and
-	all.tcl to use the new tcltest package and removed references to
-	the defs.tcl file. Modified the README file to point to the man
-	page for tcltest. 
-	
-1999-06-25    <stanton@scriptics.com>
-
-	* tests/reg.test: 
+	* tests/all.tcl: Modified all test files (tests/*.test) and all.tcl to
+	use the new tcltest package and removed references to the defs.tcl
+	file. Modified the README file to point to the man page for tcltest.
+
+1999-06-25  Scott Stanton  <stanton@scriptics.com>
+
+	* tests/reg.test:
 	* generic/regexec.c: Fixed bugs in non-greedy quantifiers.
 
-1999-06-23    <jpeek@scriptics.com>
+1999-06-23  Jerry Peek  <jpeek@scriptics.com>
 
 	* doc/re_syntax.n:
 	* doc/switch.n:
@@ -1162,59 +1138,59 @@
 	* doc/RegExp.3:
 	* doc/regexp.n:
 	* doc/regsub.n: Moved information about syntax of 8.1 regular
-	expressions from regexp(n) manpage into new re_syntax(n) page.
-	Added pointers from other manpages to new re_syntax(n) page.
+	expressions from regexp(n) manpage into new re_syntax(n) page. Added
+	pointers from other manpages to new re_syntax(n) page.
 
-1999-06-23    <stanton@scriptics.com>
+1999-06-23  Scott Stanton  <stanton@scriptics.com>
 
 	* unix/Makefile.in: Changed install-doc to install-man.
 
-	* tools/uniParse.tcl: 
-	* tools/uniClass.tcl: 
-	* tools/README: 
-	* tests/string.test: 
-	* generic/regc_locale.c: 
-	* generic/tclUniData.c: 
-	* generic/tclUtf.c: 
+	* tools/uniParse.tcl:
+	* tools/uniClass.tcl:
+	* tools/README:
+	* tests/string.test:
+	* generic/regc_locale.c:
+	* generic/tclUniData.c:
+	* generic/tclUtf.c:
 	* doc/string.n: Updated Unicode character tables to reflect latest
-	Unicode 2.1 data.  Also rationalized "regexp" and "string is"
+	Unicode 2.1 data. Also rationalized "regexp" and "string is"
 	definitions of character classes.
 
-1999-06-21    <stanton@scriptics.com>
+1999-06-21  Scott Stanton  <stanton@scriptics.com>
 
 	* unix/tclUnixThrd.c (TclpThreadCreate): Fixed memory leak where
-	thread attributes were not being released. [Bug: 2254]
+	thread attributes were not being released. [Bug 2254]
 
-1999-06-17    <stanton@scriptics.com>
+1999-06-17  Scott Stanton  <stanton@scriptics.com>
 
-	* tests/regexp.test: 
-	* generic/tclCmdMZ.c: 
-	* generic/tclCmdIL.c: Changed to use new regexp interfaces.  Added
+	* tests/regexp.test:
+	* generic/tclCmdMZ.c:
+	* generic/tclCmdIL.c: Changed to use new regexp interfaces. Added
 	-expanded, -line, -linestop, and -lineanchor switches to regsub.
 
-	* doc/RegExp.3: Documented the new regexp interfaces and
-	the compile/execute flags.
-	
-	* generic/tclTest.c: 
+	* doc/RegExp.3: Documented the new regexp interfaces and the
+	compile/execute flags.
+
+	* generic/tclTest.c:
 	* generic/tclRegexp.h:
-	* generic/tclRegexp.c: 
-	* generic/tcl.h: 
-	* generic/tcl.decls: Renamed Tcl_RegExpMatchObj to
-	Tcl_RegExpExecObj and added a new Tcl_RegExpMatchObj that is
-	equivalent to Tcl_RegExpMatch.  Added public macros for the regexp
-	compile/execute flags.  Changed to store either an object pointer
-	or a string pointer in the TclRegexp structure.  Changed to avoid
-	adding a reference to the object or copying the string.
+	* generic/tclRegexp.c:
+	* generic/tcl.h:
+	* generic/tcl.decls: Renamed Tcl_RegExpMatchObj to Tcl_RegExpExecObj
+	and added a new Tcl_RegExpMatchObj that is equivalent to
+	Tcl_RegExpMatch. Added public macros for the regexp compile/execute
+	flags. Changed to store either an object pointer or a string pointer
+	in the TclRegexp structure. Changed to avoid adding a reference to the
+	object or copying the string.
 
 	* generic/regcomp.c: lint
 
-	* tests/reg.test: 
-	* generic/regex.h: 
+	* tests/reg.test:
+	* generic/regex.h:
 	* generic/regc_lex.c: Added REG_BOSONLY flag to allow Expect to
 	iterate through a string an only find matches that start at the
 	current position within the string.
 
-1999-06-16  <wart@scriptics.com>
+1999-06-16  Michael Thomas  <wart@scriptics.com>
 
 	* unix/configure.in:
 	* unix/Makefile.in:
@@ -1224,15 +1200,15 @@
 
 1999-06-16  Melissa Hirschl  <hershey@matisse.scriptics.com>
 
-	* generic/tclVar.c (Tcl_VariableObjCmd): fixed premature increment
-	in loop that was causing out-of-bounds reads on array "varName".
+	* generic/tclVar.c (Tcl_VariableObjCmd): fixed premature increment in
+	loop that was causing out-of-bounds reads on array "varName".
 
-1999-06-16    <stanton@scriptics.com>
+1999-06-16  Scott Stanton  <stanton@scriptics.com>
 
 	* tests/execute.test:
-	* generic/tclExecute.c (TclExecuteByteCode): Fixed crash caused by
-	a bug in INST_LOAD_SCALAR1 where the scalar index was read as
-	a signed 1 byte value instead of unsigned.  [Bug: 2243]
+	* generic/tclExecute.c (TclExecuteByteCode): Fixed crash caused by a
+	bug in INST_LOAD_SCALAR1 where the scalar index was read as a signed 1
+	byte value instead of unsigned. [Bug 2243]
 
 1999-06-14  Melissa Hirschl  <hershey@matisse.scriptics.com>
 
@@ -1242,118 +1218,116 @@
 	* win/Makefile.in
 	* win/makefile.vc
 	* generic/tclStringObj.c:
-	Merged String and Unicode object types.  Added new functions to
-	the puplic API:  Tcl_NewUnicodeObj, Tcl_SetUnicodeObj,
-	Tcl_GetUnicode, Tcl_GetUniChar, Tcl_GetCharLength, Tcl_GetRange,
+	Merged String and Unicode object types. Added new functions to the
+	puplic API: Tcl_NewUnicodeObj, Tcl_SetUnicodeObj, Tcl_GetUnicode,
+	Tcl_GetUniChar, Tcl_GetCharLength, Tcl_GetRange,
 	Tcl_AppendUnicodeToObj.
 
-1999-06-09    <stanton@scriptics.com>
+1999-06-09  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclUnicodeObj.c: Lots of cleanup and simplification.
-	Fixed several memory bugs.  Added TclAppendUnicodeToObj.  
+	* generic/tclUnicodeObj.c: Lots of cleanup and simplification. Fixed
+	several memory bugs. Added TclAppendUnicodeToObj.
 
 	* generic/tclInt.h: Added declarations for various Unicode string
-	functions.  
-
-	* generic/tclRegexp.c: 
-	* generic/tclCmdMZ.c: Changed to use new Unicode string interfaces
-	for better performance. 
-	
-	* generic/tclRegexp.h: 
-	* generic/tclRegexp.c: 
-	* generic/tcl.h: 
-	* generic/tcl.decls: Added Tcl_RegExpMatchObj and
-	Tcl_RegExpGetInfo calls to access lower level regexp API.  These
-	features are needed by Expect.  This is a preliminary
-	implementation pending final review and cleanup.
+	functions.
+
+	* generic/tclRegexp.c:
+	* generic/tclCmdMZ.c: Changed to use new Unicode string interfaces for
+	better performance.
+
+	* generic/tclRegexp.h:
+	* generic/tclRegexp.c:
+	* generic/tcl.h:
+	* generic/tcl.decls: Added Tcl_RegExpMatchObj and Tcl_RegExpGetInfo
+	calls to access lower level regexp API. These features are needed by
+	Expect. This is a preliminary implementation pending final review and
+	cleanup.
 
 	* generic/tclCmdMZ.c:
-	* tests/string.test: Fixed bug where string map failed on null
-	strings.
+	* tests/string.test: Fixed bug where string map failed on null strings
 
-	* generic/regexec.c: 
+	* generic/regexec.c:
 	* unix/tclUnixNotfy.c: lint
 
 	* tools/genStubs.tcl: Changed to always write output in LF mode.
 
-1999-06-08    <stanton@scriptics.com>
+1999-06-08  Scott Stanton  <stanton@scriptics.com>
 
-	* win/tclWinSock.c: Rolled back to the 8.1.0 implementation
-	because of serious problems with the new driver.  Basically no
-	incoming socket connections would be reported to a server port.
-	The 8.1.1 code needs to be redesigned and fixed correctly.
+	* win/tclWinSock.c: Rolled back to the 8.1.0 implementation because of
+	serious problems with the new driver. Basically no incoming socket
+	connections would be reported to a server port. The 8.1.1 code needs
+	to be redesigned and fixed correctly.
 
 1999-06-07  Melissa Hirschl  <hershey@matisse.scriptics.com>
 
-	* tests/string.test: 
+	* tests/string.test:
 	* generic/tclVar.c (Tcl_SetVar2Ex):
 	* generic/tclStringObj.c (Tcl_AppendObjToObj):
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): optimized the string
-	index, string length, string range, and append command in cases
-	where the object's internal rep is a bytearray.  Objects with
-	other internal reps are converted to have the new unicode internal
-	rep.  
-
-	* unix/Makefile.in: 
-	* win/Makefile.in: 
-	* win/Makefile.vc: 
-	* tests/unicode.test: 
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): optimized the string index,
+	string length, string range, and append command in cases where the
+	object's internal rep is a bytearray. Objects with other internal reps
+	are converted to have the new unicode internal rep.
+
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/Makefile.vc:
+	* tests/unicode.test:
 	* generic/tclInt.h:
 	* generic/tclObj.c:
 	* generic/tclUnicodeObj.c: added a new object type to store the
 	unicode representation of a string.
 
 	* generic/tclTestObj.c: added the objtype option to the testobj
-	command.  This option returns the name of the type of internal rep
-	an object has.
+	command. This option returns the name of the type of internal rep an
+	object has.
 
-1999-06-04    <stanton@scriptics.com>
+1999-06-04  Scott Stanton  <stanton@scriptics.com>
 
-	* win/configure.in: 
+	* win/configure.in:
 	* win/Makefile.in: Windows build now handles static/dynamic
-	debug/nodebug builds and supports the standard targets using
-	Cygwin user tools plus GNU make and autoconf.
+	debug/nodebug builds and supports the standard targets using Cygwin
+	user tools plus GNU make and autoconf.
 
-1999-06-03    <stanton@scriptics.com>
+1999-06-03  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): 
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
 	* tests/string.test: Fixed bug where string equal/compare -nocase
-	reported wrong result on null strings. [Bug: 2138]
+	reported wrong result on null strings. [Bug 2138]
 
-1999-06-02    <stanton@scriptics.com>
+1999-06-02  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclUtf.c (Tcl_UtfNcasecmp): Fixed incorrect computation
-	of relative ordering. [Bug: 2135]
+	* generic/tclUtf.c (Tcl_UtfNcasecmp): Fixed incorrect computation of
+	relative ordering. [Bug 2135]
 
-1999-06-01    <stanton@scriptics.com>
+1999-06-01  Scott Stanton  <stanton@scriptics.com>
 
 	* unix/configure.in: Fixed various small configure.in patches
-	submitted by Jan Nijtmans. [Bug: 2121]
-
-	* tests/reg.test: 
-	* generic/regc_color.c: 
-	* generic/regc_cvec.c: 
-	* generic/regc_lex.c: 
-	* generic/regc_locale.c: 
-	* generic/regc_nfa.c: 
-	* generic/regcomp.c: 
-	* generic/regcustom.h: 
-	* generic/rege_dfa.c: 
-	* generic/regerror.c: 
-	* generic/regerrs.h: 
-	* generic/regex.h: 
-	* generic/regexec.c: 
-	* generic/regfree.c: 
-	* generic/regfronts.c: 
-	* generic/regguts.h: 
-	* generic/tclCmdMZ.c: 
-	* generic/tclRegexp.c: 
-	* generic/tclRegexp.h: 
+	submitted by Jan Nijtmans. [Bug 2121]
+
+	* tests/reg.test:
+	* generic/regc_color.c:
+	* generic/regc_cvec.c:
+	* generic/regc_lex.c:
+	* generic/regc_locale.c:
+	* generic/regc_nfa.c:
+	* generic/regcomp.c:
+	* generic/regcustom.h:
+	* generic/rege_dfa.c:
+	* generic/regerror.c:
+	* generic/regerrs.h:
+	* generic/regex.h:
+	* generic/regexec.c:
+	* generic/regfree.c:
+	* generic/regfronts.c:
+	* generic/regguts.h:
+	* generic/tclCmdMZ.c:
+	* generic/tclRegexp.c:
+	* generic/tclRegexp.h:
 	* generic/tclTest.c: Applied Henry Spencer's latest regexp patches
-	that fix an infinite loop bug and add support for testing whether
-	a string could match with additional input.  [Bug: 2117]
+	that fix an infinite loop bug and add support for testing whether a
+	string could match with additional input. [Bug 2117]
 
-1999-05-28    <stanton@scriptics.com>
+1999-05-28  Scott Stanton  <stanton@scriptics.com>
 
 	* generic/tclObj.c: Changed to eliminate use of isupper/tolower in
 	favor of the Unicode versions.
@@ -1362,427 +1336,409 @@
 	* win/configure.in: Added preliminary TEA implementation.
 
 	* win/tclWinDde.c: Fixed bug where dde calls were being passed an
-	invalid dde handle because Initialize had not been called.
-	[Bug: 2124]
+	invalid dde handle because Initialize had not been called. [Bug 2124]
 
-1999-05-26    <redman@scriptic.com>
+1999-05-26  Scott Redman  <redman@scriptic.com>
 
-	* generic/tclThreadTest.c: Fixed race condition in testthread
-	code that showed up in the WinNT test suite intermittently.
+	* generic/tclThreadTest.c: Fixed race condition in testthread code
+	that showed up in the WinNT test suite intermittently.
 
-	* win/tclWinSock.c: Fixed a hang in the WinNT socket driver, wake
-	up the socket thread every 100ms to check for events on the
-	sockets that did not wake up the thread (race condition).
+	* win/tclWinSock.c: Fixed a hang in the WinNT socket driver, wake up
+	the socket thread every 100ms to check for events on the sockets that
+	did not wake up the thread (race condition).
 
-1999-05-24    <stanton@scriptics.com>
+1999-05-24  Scott Stanton  <stanton@scriptics.com>
 
-	* tools/genStubs.tcl: Changed to allow a list of platforms instead
-	of just one at a time.
+	* tools/genStubs.tcl: Changed to allow a list of platforms instead of
+	just one at a time.
 
-	* generic/tcl.decls: 
-	* generic/tclCmdMZ.c: 
-	* generic/tclDecls.h: 
-	* generic/tclInt.decls: 
-	* generic/tclIntDecls.h: 
-	* generic/tclPort.h: 
-	* generic/tclStubInit.c: 
+	* generic/tcl.decls:
+	* generic/tclCmdMZ.c:
+	* generic/tclDecls.h:
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h:
+	* generic/tclPort.h:
+	* generic/tclStubInit.c:
 	* generic/tclStubLib.c: Various header file related changes and other
 	lint to try to get the Mac builds working.
 
-1999-05-21    <redman@scriptics.com>
+1999-05-21  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinPipe.c: Fix bug when launching command.com on
-	Win95/98.  Need to wait for the procInfo.hProcess of the process that
-	was created, not the hProcess of the current process.  [Bug: 2105]
+	* win/tclWinPipe.c: Fix bug when launching command.com on Win95/98.
+	Need to wait for the procInfo.hProcess of the process that was
+	created, not the hProcess of the current process. [Bug 2105]
 
-1999-05-20    <redman@scriptics.com>
+1999-05-20  Scott Redman  <redman@scriptics.com>
 
-	* library/init.tcl: Add the directory where the executable is, and
-	the ../lib directory relative to that, to the auto_path variable.
-	
-1999-05-19    <stanton@scriptics.com>
+	* library/init.tcl: Add the directory where the executable is, and the
+	../lib directory relative to that, to the auto_path variable.
+
+1999-05-19  Scott Stanton  <stanton@scriptics.com>
 
 	Merged in various changes submitted by Jeff Hobbs:
-	
-	* generic/tcl.decls: 
-	* generic/tclUtf.c: Added Tcl_UniCharIs* functions for control,
-	graph, print, and punct classes.
+
+	* generic/tcl.decls:
+	* generic/tclUtf.c: Added Tcl_UniCharIs* functions for control, graph,
+	print, and punct classes.
 
 	* generic/tclUtil.c:
 	* doc/StrMatch.3: Added Tcl_StringCaseMatch() implementation to
 	support case-insensitive globbing.
-	
-	* doc/string.n: 
-	* unix/mkLinks: 
-	* tests/string.test: 
-	* generic/tclCmdMZ.c: Added additional character class tests,
-	added -nocase switch to "string match", changed string first/last
-	to use offsets.
 
-1999-05-19    <redman@scriptics.com>
+	* doc/string.n:
+	* unix/mkLinks:
+	* tests/string.test:
+	* generic/tclCmdMZ.c: Added additional character class tests, added
+	-nocase switch to "string match", changed string first/last to use
+	offsets.
+
+1999-05-19  Scott Redman  <redman@scriptics.com>
 
 	* generic/tcl.h: Add extern "C" block around entire header file for
-	C++ compilers to fix linkage issues.  Submitted by Don Porter and
-	Paul Duffin.
+	C++ compilers to fix linkage issues. Submitted by Don Porter and Paul
+	Duffin.
 
-	* generic/tclRegexp.c: Fix bug when the regexp cache is empty
-	and an empty pattern is used in regexp ( such as {} or "" ).
+	* generic/tclRegexp.c: Fix bug when the regexp cache is empty and an
+	empty pattern is used in regexp ( such as {} or "" ).
 
-1999-05-18    <stanton@scriptics.com>
+1999-05-18  Scott Stanton  <stanton@scriptics.com>
 
-	* win/tclWinChan.c: Modified initialization code to avoid
-	inherenting closed or invalid channels.  If the standard input is
-	anything other than a console, file, serial port, or pipe, then we
-	fall back to the standard Tk window console.
+	* win/tclWinChan.c: Modified initialization code to avoid inherenting
+	closed or invalid channels. If the standard input is anything other
+	than a console, file, serial port, or pipe, then we fall back to the
+	standard Tk window console.
 
-1999-05-14    <stanton@scriptics.com>
+1999-05-14  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclCmdAH.c (Tcl_ForObjCmd): Fixed crash caused by
-	failure to reset the result before evaluating the test
-	expression. 
+	* generic/tclCmdAH.c (Tcl_ForObjCmd): Fixed crash caused by failure to
+	reset the result before evaluating the test expression.
 
-1999-05-14    <surles@scriptics.com>
+1999-05-14  Bryan Surles  <surles@scriptics.com>
 
-	* generic/tclBasic.c (Tcl_CreateInterp): Added introspection
-	variable for threaded interps.  If the interp was compiled with
-	threads enabled, the tcl_platform(threaded) variable will exist.
+	* generic/tclBasic.c (Tcl_CreateInterp): Added introspection variable
+	for threaded interps. If the interp was compiled with threads enabled,
+	the tcl_platform(threaded) variable will exist.
 
-1999-05-14    <redman@scriptics.com>
+1999-05-14  Scott Redman  <redman@scriptics.com>
 
 	* generic/tclDate.c: Applied patch to fix 100-year and 400-year
-	boundaries in leap year code, from Isaac Hollander.  [Bug: 2066]
+	boundaries in leap year code, from Isaac Hollander. [Bug 2066]
 
-1999-05-13    <stanton@scriptics.com>
+1999-05-13  Scott Stanton  <stanton@scriptics.com>
 
 	* unix/Makefile.in:
 	* unix/tclAppInit.c: Minor cleanup related to Xt notifier.
-	
-	* unix/tclUnixInit.c (TclpSetInitialEncodings): Tcl now looks for
-	an encoding subfield in the LANG/LC_ALL variables in cases where
-	the locale is not found in the locale table.  Ensure that
-	setlocale() is called at least once so X11 will initialize
-	properly.  Also, forces the LC_NUMERIC locale to be "C" so numeric
-	processing in scripts is not affected by the current locale
-	setting. [Bug: 1989]
 
-	* generic/tclRegexp.c: Increased per-thread regexp cache to 30
-	slots.  This seems to be about the right number for larger
-	applications like exmh.  [Bug: 1063]
+	* unix/tclUnixInit.c (TclpSetInitialEncodings): Tcl now looks for an
+	encoding subfield in the LANG/LC_ALL variables in cases where the
+	locale is not found in the locale table. Ensure that setlocale() is
+	called at least once so X11 will initialize properly. Also, forces the
+	LC_NUMERIC locale to be "C" so numeric processing in scripts is not
+	affected by the current locale setting. [Bug 1989]
+
+	* generic/tclRegexp.c: Increased per-thread regexp cache to 30 slots.
+	This seems to be about the right number for larger applications like
+	exmh. [Bug 1063]
 
-1999-05-12    <stanton@scriptics.com>
+1999-05-12  Scott Stanton  <stanton@scriptics.com>
 
 	* doc/tclsh.1: Updated references to rc script names to accurately
 	reflect the platform differences on Windows.
 
-	* tests/regexp.test: 
-	* generic/tclInt.h: 
-	* generic/tclBasic.c: 
+	* tests/regexp.test:
+	* generic/tclInt.h:
+	* generic/tclBasic.c:
 	* generic/tclRegexp.h:
-	* generic/tclRegexp.c: Replaced the per-interpreter regexp cache
-	with a per-thread cache.  Changed the Regexp object to take
-	advantage of this extra cache.  Added a reference count to the
-	TclRegexp type so regexps can be shared by multiple objects.
-	Removed the per-interp regexp cache from the interpreter.  Now
-	regexps can be used with no need for an interpreter. [Bug: 1063]
-
-	* win/tclWinInit.c (TclpSetVariables): Avoid calling GetUserName
-	if the value can be determined from the USERNAME environment
-	variable.  GetUserName is very slow.
-
-1999-05-07    <stanton@scriptics.com>
-
-	* win/winDumpExts.c: 
-	* win/makefile.vc: Removed incorrect patch. [Bug: 1998]
-	
+	* generic/tclRegexp.c: Replaced the per-interpreter regexp cache with
+	a per-thread cache. Changed the Regexp object to take advantage of
+	this extra cache. Added a reference count to the TclRegexp type so
+	regexps can be shared by multiple objects. Removed the per-interp
+	regexp cache from the interpreter. Now regexps can be used with no
+	need for an interpreter. [Bug 1063]
+
+	* win/tclWinInit.c (TclpSetVariables): Avoid calling GetUserName if
+	the value can be determined from the USERNAME environment variable.
+	GetUserName is very slow.
+
+1999-05-07  Scott Stanton  <stanton@scriptics.com>
+
+	* win/winDumpExts.c:
+	* win/makefile.vc: Removed incorrect patch. [Bug 1998]
+
 	* generic/tcl.decls: Replaced const with CONST.
 
-	* generic/tclResult.c (Tcl_AppendResultVA): 
+	* generic/tclResult.c (Tcl_AppendResultVA):
 	* generic/tclStringObj.c (Tcl_AppendStringsToObjVA): Fixed to copy
 	arglist using memcpy instead of assignment so it works properly on
-	OS/390. [Bug: 1997]
+	OS/390. [Bug 1997]
 
 	* generic/tclLoadNone.c: Updated to use current interfaces, added
-	TclpUnloadFile. [Bug: 2003]
+	TclpUnloadFile. [Bug 2003]
 
-	* win/winDumpExts.c: 
-	* win/makefile.vc: Changed to emit library name in defs
-	file. [Bug: 1998]
+	* win/winDumpExts.c:
+	* win/makefile.vc: Changed to emit library name in defs file. [Bug
+	1998]
 
-	* unix/configure.in: Added fix for OS/390. [Bug: 1976]
+	* unix/configure.in: Added fix for OS/390. [Bug 1976]
 
-1999-05-06    <stanton@scriptics.com>
+1999-05-06  Scott Stanton  <stanton@scriptics.com>
 
-	* tests/string.test: 
-	* generic/tclCmdMZ.c: 
+	* tests/string.test:
+	* generic/tclCmdMZ.c:
 	* doc/string.n: Fixed bug in string equal/compare code when using
-	-length option.  Cleaned up docs a bit more.
-
-	* tests/http.test: Unset "data" array before running tests to
-	avoid failures due to previous tests.
-
-	* doc/string.n: 
-	* tests/cmdIL.test: 
-	* tests/cmdMZ.test: 
-	* tests/error.test: 
-	* tests/ioCmd.test: 
-	* tests/lindex.test: 
-	* tests/linsert.test: 
-	* tests/lrange.test: 
-	* tests/lreplace.test: 
-	* tests/string.test: 
-	* tests/cmdIL.test: 
-	* generic/tclUtil.c: 
-	* generic/tclCmdMZ.c: Replaced "string icompare/iequal" with
-	-nocase and -length switches to "string compare/equal".  Added a
-	-nocase option to "string map".  Changed index syntax to allow
-	integer or end?-integer? instead of a full expression.  This is
-	much simpler with safeTcl scripts since it avoids double
-	substitution issues.
-
-	* doc/Utf.3: 
-	* generic/tclStubInit.c: 
-	* generic/tclDecls.h: 
+	-length option. Cleaned up docs a bit more.
+
+	* tests/http.test: Unset "data" array before running tests to avoid
+	failures due to previous tests.
+
+	* doc/string.n:
+	* tests/cmdIL.test:
+	* tests/cmdMZ.test:
+	* tests/error.test:
+	* tests/ioCmd.test:
+	* tests/lindex.test:
+	* tests/linsert.test:
+	* tests/lrange.test:
+	* tests/lreplace.test:
+	* tests/string.test:
+	* tests/cmdIL.test:
+	* generic/tclUtil.c:
+	* generic/tclCmdMZ.c: Replaced "string icompare/iequal" with -nocase
+	and -length switches to "string compare/equal". Added a -nocase option
+	to "string map". Changed index syntax to allow integer or
+	end?-integer? instead of a full expression. This is much simpler with
+	safeTcl scripts since it avoids double substitution issues.
+
+	* doc/Utf.3:
+	* generic/tclStubInit.c:
+	* generic/tclDecls.h:
 	* generic/tclUtf.c:
 	* generic/tcl.decls: Added Tcl_UtfNcmp and Tcl_UtfNcasecmp.
 
-1999-05-05    <stanton@scriptics.com>
+1999-05-05  Scott Stanton  <stanton@scriptics.com>
 
 	* win/makefile.vc: Added encoding directory to install-libraries
 	target.
 
-1999-05-03    <stanton@scriptics.com>
-
-	* doc/string.n: 
-	* tests/cmdMZ.test: 
-	* tests/string.test: 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Changed "string length"
-	to avoid regenerating the string rep of a ByteArray object.
-	
-	* tests/cmdIL.test: 
-	* tests/cmdMZ.test: 
-	* tests/error.test: 
+1999-05-03  Scott Stanton  <stanton@scriptics.com>
+
+	* doc/string.n:
+	* tests/cmdMZ.test:
+	* tests/string.test:
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Changed "string length" to
+	avoid regenerating the string rep of a ByteArray object.
+
+	* tests/cmdIL.test:
+	* tests/cmdMZ.test:
+	* tests/error.test:
 	* tests/lindex.test:
-	* tests/linsert.test: 
-	* tests/lrange.test: 
-	* tests/lreplace.test: 
-	* tests/string.test: 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): 
-	* generic/tclUtil.c (TclGetIntForIndex): Applied Jeff Hobbs's
-	string patch which includes the following changes [Bug: 1845]:
-	
-	    - string compare now takes optional length arg (for strncmp
-		behavior)
-                            
-            - added string equal (just a few lines of code blended
-                in with string compare)
-            
-            - added string icompare/iequal for case-insensitive comparisons
-            
-            - string index's index can now be ?end[+-]?expression
-                I made this change in the private TclGetIntForIndex,
-                which means that the list commands also benefit, as
-                well as string range, et al.
-            
-            - added [string repeat string count]
-                Repeats given string  number of times
-            
-            - added string replace, string equiv to lreplace
-              (quasi opposite of string range):
-                        string replace first last ?string?
-                Example of use, replacing end of string with ...
-                should the string be more than 16 chars long:
-                        string replace $string 16 end "..."
-                This just returns the string len < 16, so it
-                will only affect the long strings.
-            
-            - added optional first and last args to string to*
-                This allows you to just affect certain regions of
-                a string with the command (like just capping the
-                first letter).  I found the original totitle to
-                be too draconian to be useful.
-            
-            - added [string map charMap string]
-                where charMap is a {from to from to} list that equates to
-                what one might get from [array get].  Each  and 
-                can be multiple chars (or none at all).  For Tcl/CGI users,
-                this is a MAJOR speed booster.
-	
-	* generic/tclParse.c (Tcl_ParseCommand): Changed to avoid
-	modifying eval'ed strings that are already null terminated.
-	[Bug: 1793] 
-
-	* tests/binary.test: 
-	* generic/tclBinary.c (DupByteArrayInternalRep): Fixed bug where
-	type was not being set in duplicated object. [Bug: 1975, 2047]
-
-1999-04-30    <stanton@scriptics.com>
-	
+	* tests/linsert.test:
+	* tests/lrange.test:
+	* tests/lreplace.test:
+	* tests/string.test:
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
+	* generic/tclUtil.c (TclGetIntForIndex): Applied Jeff Hobbs's string
+	patch which includes the following changes [Bug 1845]:
+	- string compare now takes optional length arg (for strncmp behavior)
+	- added string equal (just a few lines of code blended in with string
+	  compare)
+	- added string icompare/iequal for case-insensitive comparisons
+	- string index's index can now be ?end[+-]?expression
+	  I made this change in the private TclGetIntForIndex, which means
+	  that the list commands also benefit, as well as string range, et al.
+	- added [string repeat string count]
+	  Repeats given string number of times
+	- added string replace, string equiv to lreplace
+	  (quasi opposite of string range):
+		string replace first last ?string?
+	  Example of use, replacing end of string with ... should the string
+	  be more than 16 chars long:
+		string replace $string 16 end "..."
+	  This just returns the string len < 16, so it will only affect the
+	  long strings.
+	- added optional first and last args to string to*
+	  This allows you to just affect certain regions of a string with the
+	  command (like just capping the first letter). I found the original
+	  totitle to be too draconian to be useful.
+	- added [string map charMap string]
+	  where charMap is a {from to from to} list that equates to what one
+	  might get from [array get]. Each and can be multiple chars (or none
+	  at all). For Tcl/CGI users, this is a MAJOR speed booster.
+
+	* generic/tclParse.c (Tcl_ParseCommand): Changed to avoid modifying
+	eval'ed strings that are already null terminated. [Bug 1793]
+
+	* tests/binary.test:
+	* generic/tclBinary.c (DupByteArrayInternalRep): Fixed bug where type
+	was not being set in duplicated object. [Bug 1975, 2047]
+
+1999-04-30  Scott Stanton  <stanton@scriptics.com>
+
 	* Changed version to 8.1.1.
-	
-1999-04-30    <stanton@scriptics.com>
+
+1999-04-30  Scott Stanton  <stanton@scriptics.com>
 
 	* Merged changes from 8.1.0 branch:
 
 	* generic/tclParse.c: Fixed memory leak in CommandComplete.
 
-	* generic/tclPlatDecls.h: 
-	* generic/tclIntPlatDecls.h: 
-	* generic/tclIntDecls.h: 
-	* generic/tclDecls.h: 
+	* generic/tclPlatDecls.h:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclIntDecls.h:
+	* generic/tclDecls.h:
 	* tools/genStubs.tcl: Added 'extern "C" {}' block around the stub
-	table pointer declaration so the stub library can be used from
-	C++. [Bug: 1934]
+	table pointer declaration so the stub library can be used from C++.
+	[Bug 1934]
 
 	* Lots of documentation and other release engineering fixes.
 
-1999-04-28    <stanton@scriptics.com>
+1999-04-28  Scott Stanton  <stanton@scriptics.com>
 
-	* mac/tclMacResource.c: 
-	* generic/tclListObj.c: 
-	* generic/tclObj.c: 
+	* mac/tclMacResource.c:
+	* generic/tclListObj.c:
+	* generic/tclObj.c:
 	* generic/tclStringObj.c: Changed to avoid freeing the string
-	representation before freeing the internal rep.  This helps with
-	debugging since the string rep will still be valid when the free
-	proc is invoked.
+	representation before freeing the internal rep. This helps with
+	debugging since the string rep will still be valid when the free proc
+	is invoked.
 
-1999-04-27    <stanton@scriptics.com>
+1999-04-27  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclLiteral.c (TclHideLiteral): Fixed so hidden literals
-	get duplicated to avoid accidental sharing in the global object
-	table. 
+	* generic/tclLiteral.c (TclHideLiteral): Fixed so hidden literals get
+	duplicated to avoid accidental sharing in the global object table.
 
-1999-04-23    <stanton@scriptics.com>
+1999-04-23  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclStubInit.c: 
+	* generic/tclStubInit.c:
 	* tools/genStubs.tcl: Changed to avoid the need for forward
 	declarations in stub initializers.
 
-1999-04-23    <stanton@scriptics.com>
+1999-04-23  Scott Stanton  <stanton@scriptics.com>
 
 	* library/encoding/koi8-r.enc:
 	* tools/encoding/koi8-r.txt: Added support for the koi8-r Cyrillic
-	encoding. [Bug: 1771]
+	encoding. [Bug 1771]
 
-1999-04-22    <stanton@scriptics.com>
+1999-04-22  Scott Stanton  <stanton@scriptics.com>
 
 	* win/tclWinFCmd.c:
-	* win/tclWin32Dll.c: Changed uses of "try" to "__try", since that
-	is the actual keyword.  This eliminates the need for some -D flags
-	from the makefile.
+	* win/tclWin32Dll.c: Changed uses of "try" to "__try", since that is
+	the actual keyword. This eliminates the need for some -D flags from
+	the makefile.
 
-	* generic/tclPort.h: Added include of tcl.h since it defines
-	various Windows macros that are needed before deciding which
-	platform porting file to use.
+	* generic/tclPort.h: Added include of tcl.h since it defines various
+	Windows macros that are needed before deciding which platform porting
+	file to use.
 
 	* generic/tclEvent.c: lint
 
-	* win/tclWinInit.c (TclpInitPlatform): Added call to TclWinInit
-	when building a static library since DllMain will not be invoked.
-	This could break old code that explicitly called TclWinInit, but
-	should be simpler in the long run.
+	* win/tclWinInit.c (TclpInitPlatform): Added call to TclWinInit when
+	building a static library since DllMain will not be invoked. This
+	could break old code that explicitly called TclWinInit, but should be
+	simpler in the long run.
 
 1999-04-22  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclInt.h: 
-	* generic/tclInt.decls: 
-	* generic/tclCompile.c: Added TclSetByteCodeFromAny that takes a
-	hook procedure to invoke after compilation but before the byte
-	codes are emitted.  This makes it possible to do postprocessing on
-	the compiled byte codes before the ByteCode is generated.
+	* generic/tclInt.h:
+	* generic/tclInt.decls:
+	* generic/tclCompile.c: Added TclSetByteCodeFromAny that takes a hook
+	procedure to invoke after compilation but before the byte codes are
+	emitted. This makes it possible to do postprocessing on the compiled
+	byte codes before the ByteCode is generated.
+
+	* generic/tclLiteral.c: Added TclHideLiteral and TclAddLiteralObj to
+	make it possible to create local unshared literal objects.
 
-	* generic/tclLiteral.c: Added TclHideLiteral and TclAddLiteralObj
-	to make it possible to create local unshared literal objects.
-	
 	* win/tclWinInit.c:
 	* unix/tclUnixInit.c: Changed initial search path to match that
 	found used by tcl_findLibrary.
 
-1999-04-22    <redman@scriptics.com>
+1999-04-22  Scott Redman  <redman@scriptics.com>
 
 	* win/tclWinPort.h:
-	* win/tclWinSock.c: Added code to use WinSock 2.0 API on NT to
-	avoid creating a window to handle sockets.  API not available on
-	Win95 and needs to be fixed on Win98, until then continue to use
-	the older (window-based) scheme on those two OSes.
-	
-1999-04-15    <stanton@scriptics.com>
+	* win/tclWinSock.c: Added code to use WinSock 2.0 API on NT to avoid
+	creating a window to handle sockets. API not available on Win95 and
+	needs to be fixed on Win98, until then continue to use the older
+	(window-based) scheme on those two OSes.
+
+1999-04-15  Scott Stanton  <stanton@scriptics.com>
 
 	* Merged 8.1 back into the main trunk
 
-1999-04-13    <stanton@scriptics.com>
+1999-04-13  Scott Stanton  <stanton@scriptics.com>
 
 	* library/encoding/gb2312.enc:
 	* library/encoding/euc-cn.enc:
 	* tools/encoding/gb2312.txt:
 	* tools/encoding/cp950.txt:
 	* tools/encoding/Makefile: Restored the double byte definition of
-	GB2312 and added the EUC-CN encoding.  EUC-CN is a variant of
-	GB2312 that shifts the characters into bytes with the high bit set
-	and includes ASCII as a subset. [Bug: 632]
+	GB2312 and added the EUC-CN encoding. EUC-CN is a variant of GB2312
+	that shifts the characters into bytes with the high bit set and
+	includes ASCII as a subset. [Bug 632]
 
-1999-04-13    <redman@scriptics.com>
+1999-04-13  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinSock.c: Apply patch to allow write access to a socket
-	if FD_WRITE is sent but FD_CONNECT is not.  Some strange problem
-	with either Win32 or a socket driver.  [Bug: 1664 1776]
+	* win/tclWinSock.c: Apply patch to allow write access to a socket if
+	FD_WRITE is sent but FD_CONNECT is not. Some strange problem with
+	either Win32 or a socket driver. [Bug 1664 1776]
 
-1999-04-09    <redman@scriptics.com>
+1999-04-09  Scott Redman  <redman@scriptics.com>
 
-	* unix/tclUnixNotfy.c: Fixed notifier deadlock situation when the
-	pipe used to talk back notifier thread is filled with data.  When
-	calling the write() function to feed data down that pipe, unlock
-	the notifierMutex to allow the notifier to wake up again.  Found
-	as a result of the focus.test for Tk hanging. [Bug: 1700]
+	* unix/tclUnixNotfy.c: Fixed notifier deadlock situation when the pipe
+	used to talk back notifier thread is filled with data. When calling
+	the write() function to feed data down that pipe, unlock the
+	notifierMutex to allow the notifier to wake up again. Found as a
+	result of the focus.test for Tk hanging. [Bug 1700]
 
-1999-04-06    <stanton@scriptics.com>
+1999-04-06  Scott Stanton  <stanton@scriptics.com>
 
 	* tests/unixNotfy.test: Fixed hang in tests when built with thread
-	support. 
+	support.
 
-	* tests/httpold.test: Fixed broken test that didn't wait long
-	enough for events to arrive.
+	* tests/httpold.test: Fixed broken test that didn't wait long enough
+	for events to arrive.
 
 	* tests/unixInit.test: Fixed race condition in test.
-	
-	* tests/unixInit.test: 
+
+	* tests/unixInit.test:
 	* tests/fileName.test: Minor test nits.
 
 	* unix/tclUnixInit.c (TclpSetInitialEncodings): Fixed bad initial
 	encoding string.
 
-1999-04-06    <surles@scriptics.com>
+1999-04-06  Bryan Surles  <surles@scriptics.com>
 
-	* generic/tclVar.c: 
-	* generic/tclEnv.c: Moved the "array set" C level code into a
-	common routine (TclArraySet).  The TclSetupEnv routine now uses
-	this API to create an env array w/ no elements.
+	* generic/tclVar.c:
+	* generic/tclEnv.c: Moved the "array set" C level code into a common
+	routine (TclArraySet). The TclSetupEnv routine now uses this API to
+	create an env array w/ no elements.
 
 	* generic/tclEnv.c:
 	* generic/tclWinInit.h:
 	* generic/tclUnixInit.h:
-	* generic/tclInt.h: Made the Env module I18N compliant.  Changed the
+	* generic/tclInt.h: Made the Env module I18N compliant. Changed the
 	FindVariable routine to TclpFindVariable, that now does a case
-	insensitive string comparison on Windows, and not on UNIX. [Bug:
-	1299, 1500]
+	insensitive string comparison on Windows, and not on UNIX. [Bug 1299,
+	1500]
 
-1999-04-05    <stanton@scriptics.com>
+1999-04-05  Scott Stanton  <stanton@scriptics.com>
 
 	* tests/io.test: Minor test cleanup.
 
-	* generic/tclEncoding.c (Tcl_CreateEncoding): Minor lint to make
-	it easier to compile on Digital-unix. [Bug: 1659]
+	* generic/tclEncoding.c (Tcl_CreateEncoding): Minor lint to make it
+	easier to compile on Digital-unix. [Bug 1659]
 
-	* unix/configure.in: 
+	* unix/configure.in:
 	* unix/tclUnixPort.h: Applied patch for OS/390 to handle lack of
-	sys/param.h. [Bug: 1725]
+	sys/param.h. [Bug 1725]
+
+	* unix/configure.in: Fixed BSD/OS 4.* configuration to support shared
+	libraries properly. [Bug 1730]
 
-	* unix/configure.in: Fixed BSD/OS 4.* configuration to support
-	shared libraries properly. [Bug: 1730]
-	
-1999-04-05    <redman@scriptics.com>
+1999-04-05  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinDde.c: decrease timeout value for DDE calls to 30k
-	[Bug: 1639]
+	* win/tclWinDde.c: decrease timeout value for DDE calls to 30k. [Bug
+	1639]
 
 	* generic/tcl.decls:
 	* generic/tcl.h:
@@ -1792,109 +1748,106 @@
 	* generic/tclIntDecls.h:
 	* generic/tclStubInit.c:
 	* generic/tclUtil.c: Added more functions to the Tcl stubs table,
-	including all Tcl_ functions not already in it (except Cmd
-	functions) and Tcl_GetCwd() and Tcl_Chdir() (new functions).
-	
+	including all Tcl_ functions not already in it (except Cmd functions)
+	and Tcl_GetCwd() and Tcl_Chdir() (new functions).
+
 	* tests/safe.test:
 	* doc/safe.n:
 	* generic/tclBasic.c:
-	* library/safe.tcl: The encoding command is not safe as-is, so
-	create a safe alias to mask out the "encoding system <name>" but
-	allow all other uses including "encoding system". Added test cases
-	and updated the man page for Safe Tcl.
-
-1999-04-05    <stanton@scriptics.com>
-
-	* tests/winTime.test: 
-	* win/tclWinTime.c: Fixed crash in clock command that occurred
-	when manipulating negative time values in timezones east of
-	GMT. [Bug: 1142, 1458]
-	
-	* tests/platform.test: 
+	* library/safe.tcl: The encoding command is not safe as-is, so create
+	a safe alias to mask out the "encoding system <name>" but allow all
+	other uses including "encoding system". Added test cases and updated
+	the man page for Safe Tcl.
+
+1999-04-05  Scott Stanton  <stanton@scriptics.com>
+
+	* tests/winTime.test:
+	* win/tclWinTime.c: Fixed crash in clock command that occurred when
+	manipulating negative time values in timezones east of GMT. [Bug
+	1142, 1458]
+
+	* tests/platform.test:
 	* tests/fileName.test: Fixed broken tests.
-	
+
 	* generic/tclFileName.c: Moved global regexps into thread local
 	storage.
 
-	* tests/socket.test: Changed so tests don't reuse sockets,
-	since Windows is slow to release sockets.
+	* tests/socket.test: Changed so tests don't reuse sockets, since
+	Windows is slow to release sockets.
 
-	* win/tclWinConsole.c: 
-	* win/tclWinPipe.c: 
-	* win/tclWinSerial.c: Fixed race condition where background
-	threads were terminated while they still held a lock in the
-	notifier. 
+	* win/tclWinConsole.c:
+	* win/tclWinPipe.c:
+	* win/tclWinSerial.c: Fixed race condition where background threads
+	were terminated while they still held a lock in the notifier.
 
-1999-04-02    <stanton@scriptics.com>
+1999-04-02  Scott Stanton  <stanton@scriptics.com>
 
 	* tests/http.test: Fixed bad test initialization code.
 
 	* generic/tclThreadTest.c (ThreadExitProc): Fixed bug where static
-	memory was being returned instead of a dynamically allocated
-	result in error cases.
+	memory was being returned instead of a dynamically allocated result in
+	error cases.
 
-1999-04-02    <redman@scriptics.com>
+1999-04-02  Scott Redman  <redman@scriptics.com>
 
 	* doc/dde.n:
 	* tools/tcl.wse.in:
 	* win/makefile.vc:
 	* win/pkgIndex.tcl:
-	* win/tclWinDde.c:  Add new DDE package, code removed from Tk now
-	separated into its own package.  Changed DDE-based send code into
-	"dde eval" command.  Can be loaded into tclsh (not just wish).
-	Windows only.
-
-1999-04-02    <stanton@scriptics.com>
-
-	* tests/expr.test: 
-	* tests/for-old.test: 
-	* tests/for.test: 
-	* tests/foreach.test: 
-	* tests/format.test: 
-	* tests/httpold.test: 
-	* tests/if.test: 
-	* tests/init.test: 
-	* tests/interp.test: 
-	* tests/while.test:  Added some tests for known bugs (marked with
+	* win/tclWinDde.c: Add new DDE package, code removed from Tk now
+	separated into its own package. Changed DDE-based send code into "dde
+	eval" command. Can be loaded into tclsh (not just wish). Windows only.
+
+1999-04-02  Scott Stanton  <stanton@scriptics.com>
+
+	* tests/expr.test:
+	* tests/for-old.test:
+	* tests/for.test:
+	* tests/foreach.test:
+	* tests/format.test:
+	* tests/httpold.test:
+	* tests/if.test:
+	* tests/init.test:
+	* tests/interp.test:
+	* tests/while.test: Added some tests for known bugs (marked with
 	knownBug constraint), and cleaned up a few bad tests.
 
-	* generic/regc_locale.c: 
-	* generic/regcustom.h: 
-	* generic/tcl.decls: 
-	* generic/tclCmdIL.c: 
-	* generic/tclCmdMZ.c: 
-	* generic/tclInt.h: 
-	* generic/tclRegexp.c: 
-	* generic/tclScan.c: 
+	* generic/regc_locale.c:
+	* generic/regcustom.h:
+	* generic/tcl.decls:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclInt.h:
+	* generic/tclRegexp.c:
+	* generic/tclScan.c:
 	* generic/tclTest.c:
-	* generic/tclUtf.c: 
-	* win/tclWinFCmd.c: 
-	* win/tclWinFile.c: Made various Unicode utility functions
-	public. The following functions were made public and added to the
-	stubs table: 
+	* generic/tclUtf.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c: Made various Unicode utility functions public. The
+	following functions were made public and added to the stubs table:
 		Tcl_UtfToUniCharDString, Tcl_UniCharToUtfDString,
 		Tcl_UniCharLen, Tcl_UniCharNcmp, Tcl_UniCharIsAlnum,
 		Tcl_UniCharIsAlpha, Tcl_UniCharIsDigit, Tcl_UniCharIsLower,
 		Tcl_UniCharIsSpace, Tcl_UniCharIsUpper, Tcl_UniCharIsWordChar
 
-1999-04-01    <stanton@scriptics.com>
+1999-04-01  Scott Stanton  <stanton@scriptics.com>
 
-	* tests/registry.test: 
-	* win/tclWinReg.c: Internationalized the registry code.  It now
-	uses Unicode interfaces on NT. [Bug: 1197]
+	* tests/registry.test:
+	* win/tclWinReg.c: Internationalized the registry code. It now uses
+	Unicode interfaces on NT. [Bug 1197]
 
-	* tests/parse.test: 
+	* tests/parse.test:
 	* generic/tclParse.c: Fixed crash due to multiple frees in parser
-	during error cleanup when parsing commands with more tokens than
-	will fit in the static area of the parse structure. [Bug: 1681]
+	during error cleanup when parsing commands with more tokens than will
+	fit in the static area of the parse structure. [Bug 1681]
 
 	* generic/tclInt.h: Removed duplicate declarations.
 
-	* generic/tclInt.decls: 
-	* generic/tcl.decls: Added Tcl_WinUtfToTChar and Tcl_WinTCharToUtf
-	to the tclPlat table.
+	* generic/tclInt.decls:
+	* generic/tcl.decls: Added Tcl_WinUtfToTChar and Tcl_WinTCharToUtf to
+	the tclPlat table.
 
-1999-04-01    <redman@scriptics.com>
+1999-04-01  Scott Redman  <redman@scriptics.com>
 
 	* generic/tcl.decls:
 	* generic/tcl.h:
@@ -1904,44 +1857,44 @@
 	* tools/genStubs.tcl:
 	* unix/Makefile.in:
 	* win/makefile.vc: Applied patch from Jan Nijtmans to fix Ultrix
-	multiple symbol definition problem.  Now, even Tcl includes a copy
-	of the Tcl stub library.  Also fixed TCL_MEM_DEBUG mode (for Tk).
+	multiple symbol definition problem. Now, even Tcl includes a copy of
+	the Tcl stub library. Also fixed TCL_MEM_DEBUG mode (for Tk).
 
-1999-03-31    <redman@scriptics.com>
+1999-03-31  Scott Redman  <redman@scriptics.com>
 
-	* win/tclWinConsole.c: WinNT has a bug when reading a single
-	character from the console.  Rewrote the code for the console to
-	read an entire line at a time using the reader thread.
+	* win/tclWinConsole.c: WinNT has a bug when reading a single character
+	from the console. Rewrote the code for the console to read an entire
+	line at a time using the reader thread.
 
-1999-03-30    <stanton@scriptics.com>
+1999-03-30  Scott Stanton  <stanton@scriptics.com>
 
-	* unix/Makefile.in: Removed trailing backslash that broke the
-	"depend" target.
+	* unix/Makefile.in: Removed trailing backslash that broke the "depend"
+	target.
 
 	* unix/tclUnixInit.c (TclpSetInitialEncodings): Changed to avoid
-	calling setlocale().  We now look directly at env(LANG) and
-	env(LC_CTYPE) instead. [Bug: 1636]
+	calling setlocale(). We now look directly at env(LANG) and
+	env(LC_CTYPE) instead. [Bug 1636]
 
-	* generic/tclFileName.c: 
-	* generic/tclDecls.h: 
+	* generic/tclFileName.c:
+	* generic/tclDecls.h:
 	* generic/tcl.decls: Removed CONST from Tcl_JoinPath and
-	Tcl_TranslateFileName because it changes the signature of
-	Tcl_JoinPath in an incompatible manner.
+	Tcl_TranslateFileName because it changes the signature of Tcl_JoinPath
+	in an incompatible manner.
 
-	* generic/tclInt.h: 
-	* generic/tclLoad.c (TclFinalizeLoad): 
+	* generic/tclInt.h:
+	* generic/tclLoad.c (TclFinalizeLoad):
 	* generic/tclEvent.c (Tcl_Finalize): Defer unloading of loadable
-	modules until all exit handlers have been invoked.
-	[Bug: 998, 1273, 1573, 1593]
+	modules until all exit handlers have been invoked. [Bug 998, 1273,
+	1573, 1593]
 
-1999-03-29    <stanton@scriptics.com>
+1999-03-29  Scott Stanton  <stanton@scriptics.com>
 
-	* generic/tclFileName.c: 
-	* generic/tclDecls.h: 
+	* generic/tclFileName.c:
+	* generic/tclDecls.h:
 	* generic/tcl.decls: Added CONST to Tcl_JoinPath and
 	Tcl_TranslateFileName.
 
-1999-03-29    <redman@scriptics.com>
+1999-03-29  Scott Redman  <redman@scriptics.com>
 
 	* tools/genStubs.tcl:
 	* unix/configure.in:
@@ -1952,207 +1905,203 @@
 	* generic/tclDecls.h:
 	* generic/tclIntDecls.h:
 	* generic/tclPlatDecls.h:
-	* generic/tclIntPlatDecls.h: Removed the stub functions and
-	changed the stub macros to just use the name without params. Pass
-	&tclStubs into the interp (don't use tclStubsPtr because of
-	collisions with the stubs on Solaris).
-	
-1999-03-27    <redman@scriptics.com>
+	* generic/tclIntPlatDecls.h: Removed the stub functions and changed
+	the stub macros to just use the name without params. Pass &tclStubs
+	into the interp (don't use tclStubsPtr because of collisions with the
+	stubs on Solaris).
 
-	* win/makefile.bc: Removed makefile for Borland compiler, no
-	longer supported.
+1999-03-27  Scott Redman  <redman@scriptics.com>
 
-1999-03-26    <redman@scriptics.com>
+	* win/makefile.bc: Removed makefile for Borland compiler, no longer
+	supported.
+
+1999-03-26  Scott Redman  <redman@scriptics.com>
 
 	* win/tclWinSerial.c:
 	* win/tclWinConsole.c:
-	* win/tclWinPipe.c: Don't close the Win32 handle for a channel if
-	it's a stdio handle (GetStdHandle()) during shutdown of a thread
-	to prevent it from destroying the stdio of other threads.
+	* win/tclWinPipe.c: Don't close the Win32 handle for a channel if it's
+	a stdio handle (GetStdHandle()) during shutdown of a thread to prevent
+	it from destroying the stdio of other threads.
+
+1999-03-26  Suresh Ankolekar  <suresh@scriptics.com>
 
-1999-03-26    <suresh@scriptics.com>
+	* unix/configure.in: --nameble-shared is now the default and build Tcl
+	as a shared library; specify --disable-shared to build a static Tcl
+	library and shell.
 
-	* unix/configure.in
-	--nameble-shared is now the default and build Tcl as a shared
-	library; specify --disable-shared to build a static Tcl library
-	and shell.
+1999-03-25  Scott Stanton  <stanton@scriptics.com>
 
-1999-03-25    <stanton@scriptics.com>
+	* tests/interp.test:
+	* generic/tclInterp.c (AliasObjCmd): Changed so aliases are invoked at
+	current scope in the target interpreter instead of at the global
+	scope. This was an incompatibility introduced in 8.1 that is being
+	removed. [Bug 1153, 1556]
 
-	* tests/interp.test: 
-	* generic/tclInterp.c (AliasObjCmd): Changed so aliases are
-	invoked at current scope in the target interpreter instead of at
-	the global scope.  This was an incompatibility introduced in 8.1
-	that is being removed. [Bug: 1153, 1556]
-	
 	* library/encoding/big5.enc:
 	* library/encoding/gb2312.enc:
 	* tools/encoding/big5.enc:
-	* tools/encoding/gb2312.enc: Added ASCII to big5 and gb2312
-	encodings. [Bug: 632]
-	
+	* tools/encoding/gb2312.enc: Added ASCII to big5 and gb2312 encodings.
+	[Bug 632]
+
 	* generic/tclPkg.c (Tcl_PkgRequireEx): Fixed broken clientData
 	initialization in package code.
 
-	* unix/Makefile.in (dist): Added tcl.decls and tclInt.decls to
-	source distribution. [Bug: 1571]
+	* unix/Makefile.in (dist): Added tcl.decls and tclInt.decls to source
+	distribution. [Bug 1571]
 
 	* doc/Thread.3: Updated documentation of Tcl_MutexLock to indicate
-	that the recursive locking behavior is undefined.  On Windows, it
-	does not block, on Unix it deadlocks. [Bug: 1275]
+	that the recursive locking behavior is undefined. On Windows, it does
+	not block, on Unix it deadlocks. [Bug 1275]
 
-1999-03-24    <stanton@scriptics.com>
+1999-03-24  Scott Stanton  <stanton@scriptics.com>
 
-	* tests/execute.test: 
+	* tests/execute.test:
 	* generic/tclExecute.c (TclExecuteByteCode): Fixed expression code
-	that incorrectly returned floating point values for integers if
-	the internal rep happened to be a double.  Now we check to see if
-	the object has a string rep that looks like an integer before
-	using the double internal rep. [Bug: 1516]
+	that incorrectly returned floating point values for integers if the
+	internal rep happened to be a double. Now we check to see if the
+	object has a string rep that looks like an integer before using the
+	double internal rep. [Bug 1516]
 
-1999-03-24    <redman@scriptics.com>
+1999-03-24  Scott Redman  <redman@scriptics.com>
 
 	* generic/tclAlloc.c:
 	* generic/tclEncoding.c:
 	* generic/tclProc.c:
 	* unix/tclUnixTime.c:
-	* win/tclWinSerial.c: Fixed compilation warnings/errors for VC++
-	5.0 and 6.0 and HP-UX native compiler without -Aa or -Ae. 
-	[Bug: 1323 1518 1324 1583 1585 1586]
+	* win/tclWinSerial.c: Fixed compilation warnings/errors for VC++ 5.0
+	and 6.0 and HP-UX native compiler without -Aa or -Ae. [Bug 1323 1518
+	1324 1583 1585 1586]
 
-	* win/tclWinSock.c: Make sockets thread-safe on Windows. The
-	current implementation uses windows to handle events on the
-	socket, one for each thread (thread local storage). Previously,
-	there was only one window shared between threads, which didn't
-	work. [Bug: 1326]
+	* win/tclWinSock.c: Make sockets thread-safe on Windows. The current
+	implementation uses windows to handle events on the socket, one for
+	each thread (thread local storage). Previously, there was only one
+	window shared between threads, which didn't work. [Bug 1326]
 
-1999-03-23    <stanton@scriptics.com>
+1999-03-23  Scott Stanton  <stanton@scriptics.com>
 
-	* tools/tcl.wse: Fixed file association to look in the right place
-	for the wish icon. [Bug: 1544]
+	* tools/tcl.wse: Fixed file association to look in the right place for
+	the wish icon. [Bug 1544]
 
-	* tests/winNotify.test: 
-	* tests/ioCmd.test: 
+	* tests/winNotify.test:
+	* tests/ioCmd.test:
 	* tests/event.test: Changed to use new style conditionals.
 
 	* tests/encoding.test: Fixed nonportable test.
 
-	* unix/dltest/configure.in: 
-	* unix/dltest/Makefile.in: Added missing DBGX macros. [Bug: 1564]
+	* unix/dltest/configure.in:
+	* unix/dltest/Makefile.in: Added missing DBGX macros. [Bug 1564]
 
-	* tests/winNotify.test: 
-	* mac/tclMacNotify.c: 
-	* win/tclWinNotify.c: 
+	* tests/winNotify.test:
+	* mac/tclMacNotify.c:
+	* win/tclWinNotify.c:
 	* unix/tclUnixNotfy.c:
-	* generic/tclNotify.c: Added a new Tcl_ServiceModeHook interface
-	that is invoked whenever the service mode changes.  This is needed
-	to allow the Windows notifier to create a communication window the
-	first time Tcl is about to enter an external modal event loop
-	instead of at startup time.  This will avoid the various problems
-	that people have been seeing where the system hangs when tclsh
-	is running outside of the event loop. [Bug: 783]
-
-	* generic/tclInt.h: 
+	* generic/tclNotify.c: Added a new Tcl_ServiceModeHook interface that
+	is invoked whenever the service mode changes. This is needed to allow
+	the Windows notifier to create a communication window the first time
+	Tcl is about to enter an external modal event loop instead of at
+	startup time. This will avoid the various problems that people have
+	been seeing where the system hangs when tclsh is running outside of
+	the event loop. [Bug 783]
+
+	* generic/tclInt.h:
 	* generic/tcl.decls: Renamed TclpAlertNotifier back to
-	Tcl_AlertNotifier since it is part of the public notifier driver
-	API.
+	Tcl_AlertNotifier since it is part of the public notifier driver API.
+
+1999-03-23  Scott Redman  <redman@scriptics.com>
 
-1999-03-23    <redman@scriptics.com>
+	* win/tclWinSerial.c: Fixed problem with fileevent on the serial port
+	and nonblocking mode. Gets no longer hangs, fileevents fire whenever
+	there is any character data on the port.
 
-	* win/tclWinSerial.c: Fixed problem with fileevent on the serial
-	port and nonblocking mode.  Gets no longer hangs, fileevents fire
-	whenever there is any character data on the port.
-	
 	* tests/winConsole.test:
-	* win/tclWinConsole.c: Fixed problem with fileevents and gets from
-	a console stdin.  Previously, fileevents were firing before an
-	entire line was available for reading, which meant that when you
-	did a gets or read, it blocked (even in nonblocking mode). Now, it
-	should work the same as Unix: fileevents fire when an entire line
-	is ready, and gets and read do not block in non-blocking mode.
-	Added an interactive test case to check for this.
+	* win/tclWinConsole.c: Fixed problem with fileevents and gets from a
+	console stdin. Previously, fileevents were firing before an entire
+	line was available for reading, which meant that when you did a gets
+	or read, it blocked (even in nonblocking mode). Now, it should work
+	the same as Unix: fileevents fire when an entire line is ready, and
+	gets and read do not block in non-blocking mode. Added an interactive
+	test case to check for this.
 
-1999-03-22    <stanton@scriptics.com>
+1999-03-22  Scott Stanton  <stanton@scriptics.com>
 
-	* tests/reg.test: 
+	* tests/reg.test:
 	* generic/regc_color.c: Applied regexp bug fix from Henry Spencer.
 
-1999-03-19    <redman@scriptics.com>
+1999-03-19  Scott Redman  <redman@scriptics.com>
 
-	* generic/tclCmdIL.c: Fixed the initialization of an array so that
- 	the Sun 5.0 C compiler wouldn't complain.
+	* generic/tclCmdIL.c: Fixed the initialization of an array so that the
+	Sun 5.0 C compiler wouldn't complain.
 
-	* unix/configure.in: Added support for --enable-64bit.  For now,
- 	this is only supported on Solaris 7 64bit (SunOS 5.7) using the Sun 
+	* unix/configure.in: Added support for --enable-64bit. For now, this
+	is only supported on Solaris 7 64bit (SunOS 5.7) using the Sun
 	compiler (not gcc).
-	
-1999-03-18    <stanton@scriptics.com>
 
-	* win/tclWinChan.c (TclpOpenFileChannel, Tcl_MakeFileChannel):
-	Changed to only test for console or comm handles when the type is
-	FILE_TYPE_CHAR to avoid useless tests on simple files.  Also
-	reordered tests so consoles are tested first as this is more
-	common.
+1999-03-18  Scott Stanton  <stanton@scriptics.com>
+
+	* win/tclWinChan.c (TclpOpenFileChannel, Tcl_MakeFileChannel): Changed
+	to only test for console or comm handles when the type is
+	FILE_TYPE_CHAR to avoid useless tests on simple files. Also reordered
+	tests so consoles are tested first as this is more common.
 
 	* win/makefile.vc: Regularized usage of mkd and rmd and rm.
 
-	* library/encoding/shiftjis.enc: 
+	* library/encoding/shiftjis.enc:
 	* tools/encoding/shiftjis.txt: Missing/incorrect characters in
-	shift-jis table. [Bug: 1008, 1526]
+	shift-jis table. [Bug 1008, 1526]
 
 	* generic/tclInt.decls:
 	* generic/tcl.decls: Eliminated use of "string" and "list" from
-	argument lists to avoid conflicts with C++ STL. [Bug: 1181]
+	argument lists to avoid conflicts with C++ STL. [Bug 1181]
 
 	* win/tclWinFile.c (TclpMatchFiles): Changed to ignore the
-	FS_CASE_IS_PRESERVED bit and always return exactly what we get
-	from the system.
+	FS_CASE_IS_PRESERVED bit and always return exactly what we get from
+	the system.
 
-1999-03-17    <stanton@GASPODE>
+1999-03-17  Scott Stanton  <stanton@GASPODE>
 
-	* win/README.binary: 
-	* win/README: 
-	* unix/configure.in: 
-	* generic/tcl.h: 
+	* win/README.binary:
+	* win/README:
+	* unix/configure.in:
+	* generic/tcl.h:
 	* README: Updated version to 8.1b3.
 
-1999-03-14    <stanton@GASPODE>
+1999-03-14  Scott Stanton  <stanton@GASPODE>
 
-	* win/tclWinConsole.c: 
-	* win/tclWinPipe.c: 
+	* win/tclWinConsole.c:
+	* win/tclWinPipe.c:
 	* win/tclWinSerial.c: Changed so channel drivers wait for the
 	reader/writer threads to exit before returning during a close
-	operation.  This ensures that the main thread is the last thread
-	to exit, so the process return value is set properly.
-
-	* generic/tclIntDecls.h: 
-	* generic/tclIntPlatDecls.h: 
-	* generic/tclIntPlatStubs.c: 
-	* generic/tclIntStubs.c: 
-	* generic/tclPlatDecls.h: 
-	* generic/tclPlatStubs.c: 
-	* generic/tclStubInit.c: 
+	operation. This ensures that the main thread is the last thread to
+	exit, so the process return value is set properly.
+
+	* generic/tclIntDecls.h:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclIntPlatStubs.c:
+	* generic/tclIntStubs.c:
+	* generic/tclPlatDecls.h:
+	* generic/tclPlatStubs.c:
+	* generic/tclStubInit.c:
 	* generic/tclStubs.c: Fixed bad eol characters.
-	
-	* generic/tclInt.decls: Changed "const" to "CONST" in
-	declarations for better portability.
+
+	* generic/tclInt.decls: Changed "const" to "CONST" in declarations for
+	better portability.
 
 	* generic/tcl.decls: Renamed panic and panicVA to Tcl_Panic and
 	Tcl_PanicVA in the stub files.
 
-	* generic/tclInterp.c (Tcl_MakeSafe): Remove tcl_platform(user)
-	from safe interps.
+	* generic/tclInterp.c (Tcl_MakeSafe): Remove tcl_platform(user) from
+	safe interps.
 
-1999-03-11    <stanton@GASPODE>
+1999-03-11  Scott Stanton  <stanton@GASPODE>
 
 	* unix/Makefile.in:
 	* unix/configure.in: Include compat files in the stub library in
-	addition to the main library.  Compat files are now built for
-	dynamic use in all cases.
-	
+	addition to the main library. Compat files are now built for dynamic
+	use in all cases.
+
 	* generic/tcl.h: Changed magic number so it doesn't match the plus
 	patch, at Jan's request.
-	
+
 	* unix/tclConfig.sh.in:
 	* unix/dltest/Makefile.in:
 	* unix/dltest/configure.in:
@@ -2161,65 +2110,62 @@
 	* unix/dltest/pkgc.c:
 	* unix/dltest/pkgd.c:
 	* unix/dltest/pkge.c:
-	* unix/dltest/pkgf.c: Changed package tests to build against the
-	stubs library.
+	* unix/dltest/pkgf.c: Changed package tests to build against the stubs
+	library.
 
-1999-03-10    <stanton@GASPODE>
+1999-03-10  Scott Stanton  <stanton@GASPODE>
 
-	* generic/tcl.h: 
-	* generic/tcl.decls: Changed Tcl_ReleaseType from an enum to
-	macros so it can be used in .rc files.
-	Added Tcl_GetString.
+	* generic/tcl.h:
+	* generic/tcl.decls: Changed Tcl_ReleaseType from an enum to macros so
+	it can be used in .rc files. Added Tcl_GetString.
 
 	* mac/tclMacNotify.c:
 	* generic/tclNotify.c:
-	* generic/tclInt.h: 
-	* win/tclWinNotify.c: 
+	* generic/tclInt.h:
+	* win/tclWinNotify.c:
 	* generic/tcl.h: Renamed Tcl_AlertNotifier to TclpAlertNotifier.
 
-	* generic/tclInt.decls: Added TclWinAddProcess to make it possible
-	for expect to use Tcl_WaitForPid().  This patch is from Gordon
-	Chaffee. 
+	* generic/tclInt.decls: Added TclWinAddProcess to make it possible for
+	expect to use Tcl_WaitForPid(). This patch is from Gordon Chaffee.
 
-	* mac/tclMacPort.h: 
-	* win/tclWinInit.c: 
-	* unix/tclUnixPort.h: 
-	* generic/tclAsync.c: Added TclpAsyncMark to fix bug in async
-	handling on Windows where async events don't wake up the event
-	loop.  This patch comes from Gordon Chaffee.
+	* mac/tclMacPort.h:
+	* win/tclWinInit.c:
+	* unix/tclUnixPort.h:
+	* generic/tclAsync.c: Added TclpAsyncMark to fix bug in async handling
+	on Windows where async events don't wake up the event loop. This patch
+	comes from Gordon Chaffee.
 
 	* generic/tcl.decls: Fixed declarations of reserved slots.
-	
-1999-03-10    <redman@scriptic.com>
+
+1999-03-10  Scott Redman  <redman@scriptic.com>
 
 	* generic/tclCompile.h: Ensure that the ByteCode struct is binary
 	compatible with the version in 8.0.6.
 
 	* generic/tcl.h:
-	* generic/tclBasic.c: Add Tcl_GetVersion() function to the public
-	C API to allow programs to check the version number of the Tcl
-	library at runtime.  Also added an enum to clarify the release
-	level (alpha, beta, final).
+	* generic/tclBasic.c: Add Tcl_GetVersion() function to the public C
+	API to allow programs to check the version number of the Tcl library
+	at runtime. Also added an enum to clarify the release level (alpha,
+	beta, final).
 
-1999-03-09    <stanton@GASPODE>
+1999-03-09  Scott Stanton  <stanton@GASPODE>
 
 	* Integrated changes from Tcl 8.0 including:
 		stubs mechanism
 		configure patches from Jan Nijtmans
 		rename of panic to Tcl_Panic
-	
-1999-03-08    <lfb@scriptics.com>
 
-	* win/tclWin32Dll.c: Removed Dll instance from thread-local
-	storage.
+1999-03-08  Lee Bernhard  <lfb@scriptics.com>
+
+	* win/tclWin32Dll.c: Removed Dll instance from thread-local storage.
 
-1999-03-08    <stanton@GASPODE>
-	
-	* generic/tcl.h: Moved Tcl_Mutex, etc. macros above the inclusion
-	of tclDecls.h to avoid macro conflicts.
+1999-03-08  Scott Stanton  <stanton@GASPODE>
+
+	* generic/tcl.h: Moved Tcl_Mutex, etc. macros above the inclusion of
+	tclDecls.h to avoid macro conflicts.
 
 	* generic/tclInt.h:
-	* generic/regc_color.c: 
+	* generic/regc_color.c:
 	* generic/regcomp.c:
 	* generic/tclCmdIL.c:
 	* generic/tclCmdAH.c:
@@ -2228,20 +2174,20 @@
 	* generic/tclStringObj.c:
 	* unix/tclUnixNotfy.c: Cleaned up various compiler warnings,
 	eliminated UCHAR bugs.
-	
+
 	* unix/tclUnixNotfy.c:
 	* unix/tclUnixThrd.c:
 	* generic/tclThreadTest.c:
 	* mac/tclMacThrd.c: Changed TclpCondition*() to Tcl_Condition*().
-	
+
 	* INTEGRATED PATCHES FROM 8.0.6:
 
 	* generic/tcl.decls:
 	* generic/tcl.h:
-	* generic/tclBasic.c: 
+	* generic/tclBasic.c:
 	* generic/tclDecls.h:
 	* generic/tclInt.decls:
-	* generic/tclInt.h: 
+	* generic/tclInt.h:
 	* generic/tclIntDecls.h:
 	* generic/tclIntPlatDecls.h:
 	* generic/tclIntPlatStubs.c:
@@ -2255,199 +2201,194 @@
 	* unix/configure.in:
 	* unix/Makefile.in:
 	* unix/tclConfig.sh.in:
-	* win/makefile.vc:  
-	* win/tclWinPort.h: Added Tcl stubs implementation.  There are
-	now two new macros USE_TCL_STUBS and USE_TCL_STUB_PROCS that
-	enable use of stubs and disable stub macros respectively.  All of
-	the public and private function declarations from tcl.h and
-	tclInt.h have moved into the *.decls files and the *Stubs.c and
-	*Decls.h files are generated using the genStubs.tcl script.
+	* win/makefile.vc:
+	* win/tclWinPort.h: Added Tcl stubs implementation. There are now two
+	new macros USE_TCL_STUBS and USE_TCL_STUB_PROCS that enable use of
+	stubs and disable stub macros respectively. All of the public and
+	private function declarations from tcl.h and tclInt.h have moved into
+	the *.decls files and the *Stubs.c and *Decls.h files are generated
+	using the genStubs.tcl script.
 
 	* unix/Makefile.in:
-	* unix/configure.in: 
+	* unix/configure.in:
 	* unix/ldAix: Enhanced AIX shared library support.
 
 	* win/tclWinSock.c: Removed a bunch of extraneous PASCAL FAR
 	attributes from internal functions.
 
-	* win/tclWinReg.c: Changed registry package to use stubs mechanism
-	so it no longer depends on the specific version of Tcl.
+	* win/tclWinReg.c: Changed registry package to use stubs mechanism so
+	it no longer depends on the specific version of Tcl.
 
-	* doc/AddErrInfo.3: 
-	* doc/Eval.3: 
-	* doc/PkgRequire.3: 
-	* doc/SetResult.3: 
-	* doc/StringObj.3: 
+	* doc/AddErrInfo.3:
+	* doc/Eval.3:
+	* doc/PkgRequire.3:
+	* doc/SetResult.3:
+	* doc/StringObj.3:
 	* generic/tcl.h:
-	* generic/tclBasic.c: 
+	* generic/tclBasic.c:
 	* generic/tclPanic.c:
 	* generic/tclStringObj.c:
 	* generic/tclUtil.c:
-	* unix/mkLinks: Added va_list versions of all VARARGS
-	functions so they can be invoked from the stub functions.
+	* unix/mkLinks: Added va_list versions of all VARARGS functions so
+	they can be invoked from the stub functions.
 
-	* doc/package.n: 
-	* doc/PkgRequire.3: 
+	* doc/package.n:
+	* doc/PkgRequire.3:
 	* generic/tclPkg.c: Added Tcl_PkgProvideEx, Tcl_RequireEx,
-	Tcl_PresentEx, and Tcl_PkgPresent.  Added "package present"
-	command.
+	Tcl_PresentEx, and Tcl_PkgPresent. Added "package present" command.
 
-	* generic/tclFileName.c: 
-	* mac/tclMacFile.c: 
-	* mac/tclMacShLib.exp: 
-	* unix/tclUnixFile.c: 
-	* win/tclWinFile.c: Changed so TclGetUserHome is defined on
-	all platforms, even though it is currently a noop on mac and
-	windows, and renamed it to TclpGetUserHome.
+	* generic/tclFileName.c:
+	* mac/tclMacFile.c:
+	* mac/tclMacShLib.exp:
+	* unix/tclUnixFile.c:
+	* win/tclWinFile.c: Changed so TclGetUserHome is defined on all
+	platforms, even though it is currently a noop on mac and windows, and
+	renamed it to TclpGetUserHome.
 
 	* generic/tclPanic.c:
 	* generic/panic.c: Renamed panic to Tcl_Panic.
-	
-1999-02-25    <redman@scriptics.com>
+
+1999-02-25  Scott Redman  <redman@scriptics.com>
 
 	* win/makefile.vc: Added tclWinConsole.c and tclWinSerial.c
-	
-	* win/tclWinConsole.c: New code to properly deal with fileevents
-	and nonblocking mode on consoles.
-	
-	* win/tclWinSerial.c: New code to properly deal with fileevents
-	and nonblocking mode on serial ports.
-
-	* win/tclWinPipe.c: 
+
+	* win/tclWinConsole.c: New code to properly deal with fileevents and
+	nonblocking mode on consoles.
+
+	* win/tclWinSerial.c: New code to properly deal with fileevents and
+	nonblocking mode on serial ports.
+
+	* win/tclWinPipe.c:
 	* win/tclWinPort.h: Exported functions to allow creation of pipe
 	channels from tclWinChan.c
 
 	* win/tclWinChan.c: Check the type of a channel, including for the
-	standard (stdin/stdout/stderr), and use the correct channel type
-	to create the channel (file, serial, console, or pipe).
+	standard (stdin/stdout/stderr), and use the correct channel type to
+	create the channel (file, serial, console, or pipe).
 
-1999-02-11    <stanton@GASPODE>
+1999-02-11  Scott Stanton  <stanton@GASPODE>
 
-	* README: 
-	* generic/tcl.h: 
-	* win/README.binary: 
-	* win/README: 
-	* unix/configure.in: 
+	* README:
+	* generic/tcl.h:
+	* win/README.binary:
+	* win/README:
+	* unix/configure.in:
 	* mac/README: Updated version numbers to 8.1b2.
 
-1999-02-10    <stanton@GASPODE>
+1999-02-10  Scott Stanton  <stanton@GASPODE>
 
-	* library/auto.tcl: Fixed auto_mkindex so it handles .tbc files.
-	Did some general cleanup to handle bad eval statements that didn't
-	use "list".
+	* library/auto.tcl: Fixed auto_mkindex so it handles .tbc files. Did
+	some general cleanup to handle bad eval statements that didn't use
+	"list".
 
 	* unix/mkLinks:
 	* doc/SetVar.3:
 	* generic/tcl.h:
-	* generic/tclVar.c: Restored Tcl_ObjGetVar2 and Tcl_ObjSetVar2
-	from 8.0. Renamed Tcl_Get/SetObjVar2 to Tcl_GetVar2Ex and
-	Tcl_SetVar2Ex.
+	* generic/tclVar.c: Restored Tcl_ObjGetVar2 and Tcl_ObjSetVar2 from
+	8.0. Renamed Tcl_Get/SetObjVar2 to Tcl_GetVar2Ex and Tcl_SetVar2Ex.
 
-1999-02-10    <stanton@GASPODE>
+1999-02-10  Scott Stanton  <stanton@GASPODE>
 
-	INTEGRATED PATCHES FROM 8.0.5b2: 
+	INTEGRATED PATCHES FROM 8.0.5b2:
 
 	* test/winPipe.test: Changed to remove echoArgs.tcl temporary file
 	when done.
-	
+
 	* tests/cmdAH.test:
 	* generic/tclFileName.c (TclGetExtension): Changed behavior so the
 	split happens at the last period in the name instead of the first
-	period of the last run of periods.  So, "foo..o" is split into
-	"foo." and ".o" now. [Bug: 1126]
-	
-	* win/makefile.vc: Added better support for paths with spaces in
-	the name. Added .lib and support .dlls to the install-binaries
-	target.  Added generate of a pkgIndex.tcl script to the
-	install-libraries target.
-
-	* win/tclAppInit.c: 
-	* unix/tclAppInit.c: 
-	* mac/tclMacAppInit.c: 
-	* generic/tclTest.c: Changed some EXTERN declarations to extern
-	since they are not defining exported interfaces.  This avoids
-	generating useless declspec() attributes and makes the windows
-	makefile simpler.
-
-	* generic/tcl.h: Moved Tcl_AppInit declaration to end and cleared
-	out TCL_STORAGE_CLASS so it is not declared with a declspec().
+	period of the last run of periods. So, "foo..o" is split into "foo."
+	and ".o" now. [Bug 1126]
+
+	* win/makefile.vc: Added better support for paths with spaces in the
+	name. Added .lib and support .dlls to the install-binaries target.
+	Added generate of a pkgIndex.tcl script to the install-libraries
+	target.
+
+	* win/tclAppInit.c:
+	* unix/tclAppInit.c:
+	* mac/tclMacAppInit.c:
+	* generic/tclTest.c: Changed some EXTERN declarations to extern since
+	they are not defining exported interfaces. This avoids generating
+	useless declspec() attributes and makes the windows makefile simpler.
+
+	* generic/tcl.h: Moved Tcl_AppInit declaration to end and cleared out
+	TCL_STORAGE_CLASS so it is not declared with a declspec().
 
 	* tests/interp.test:
 	* generic/tclInterp.c (DeleteAlias): Changed to use
-	Tcl_DeleteCommandFromToken so we handle renames properly. This
-	avoids senseless panic. [Bug: 736]
+	Tcl_DeleteCommandFromToken so we handle renames properly. This avoids
+	senseless panic. [Bug 736]
 
-	* unix/tclUnixChan.c: 
-	* win/tclWinSock.c: 
+	* unix/tclUnixChan.c:
+	* win/tclWinSock.c:
 	* doc/socket.n: Applied Gordon Chaffee's patch to handle failures
-	during asynchronous socket connection operations.  This adds a new
-	"-error" fconfgure option to socket channels. [Bug: 893]
+	during asynchronous socket connection operations. This adds a new
+	"-error" fconfgure option to socket channels. [Bug 893]
 
 	* generic/tclProc.c:
 	* generic/tclNamesp.c:
-	* generic/tclInt.h: 
-	* generic/tclCmdIL.c: 
-	* generic/tclBasic.c: 
-	* generic/tclVar.c: Applied patch from Viktor Dukhovni to
-	rationalize TCL_LEAVE_ERR_MSG behavior when creating variables.
-	
-	* generic/tclVar.c: Fixed bug in namespace tail computation.
-	Fixed bug where upvar could resurrect a namespace variable whose
-	namespace had been deleted.
+	* generic/tclInt.h:
+	* generic/tclCmdIL.c:
+	* generic/tclBasic.c:
+	* generic/tclVar.c: Applied patch from Viktor Dukhovni to rationalize
+	TCL_LEAVE_ERR_MSG behavior when creating variables.
+
+	* generic/tclVar.c: Fixed bug in namespace tail computation. Fixed bug
+	where upvar could resurrect a namespace variable whose namespace had
+	been deleted.
 
 	* generic/tclCompile.c (TclCompileExprCmd): Eliminated yet another
 	bogus optimization in expression compilation.
 
-	* unix/configure.in: Added branch for BSD/OS-4* to shared library
-	case statement. [Bug: 975]
-	Fixed to correctly handle IRIX 6.5 n32 library support. [Bug: 1117]
-	
-	* win/winDumpExts.c: Patched to be pickier about stripping
-	@'s. [Bug: 920]
+	* unix/configure.in: Added branch for BSD/OS-4* to shared library case
+	statement. [Bug 975]
+	Fixed to correctly handle IRIX 6.5 n32 library support. [Bug 1117]
 
-	* library/http2.0/http.tcl: Added catch around eof test in
-	CopyDone since the user may have already called http::reset.
-	[Bug: 1108] 
+	* win/winDumpExts.c: Patched to be pickier about stripping @'s. [Bug
+	920]
 
-	* unix/configure.in: Changed Linux and IRIX to set SHLIB_LIBS to
-	LIBS so shared libraries are linked with the system
-	libraries. [Bug: 1018]
+	* library/http2.0/http.tcl: Added catch around eof test in CopyDone
+	since the user may have already called http::reset. [Bug 1108]
+
+	* unix/configure.in: Changed Linux and IRIX to set SHLIB_LIBS to LIBS
+	so shared libraries are linked with the system libraries. [Bug 1018]
 
 	* generic/tclCompile.c (CompileExprWord): Fixed exception stack
-	overflow bug caused by missing statement. [Bug: 928]
+	overflow bug caused by missing statement. [Bug 928]
 
-	* generic/tclIOCmd.c: 
-	* generic/tclBasic.c: Objectified the "open" command. [Bug: 1113] 
+	* generic/tclIOCmd.c:
+	* generic/tclBasic.c: Objectified the "open" command. [Bug 1113]
 
-	* generic/tclPosixStr.c (Tcl_ErrnoId, Tcl_ErrnoMsg): When using
-	egcs, ENOTSUP and EOPNOTSUPP are the same, so now we handle that
-	case. [Bug: 1137]
+	* generic/tclPosixStr.c (Tcl_ErrnoId, Tcl_ErrnoMsg): When using egcs,
+	ENOTSUP and EOPNOTSUPP are the same, so now we handle that case. [Bug
+	1137]
 
 	* library/init.tcl: Various small changes requested by Jan Nijtmans.
-	- If the variable $tcl_library contains the empty string, this
-	empty string will be put in $auto_path. This is not useful at all,
-	it only slows down later package processing.
-	- If the variable tcl_pkgPath is not set, the "unset __dir"
-	fails. Thich makes init.tcl totally unusable. Better put a "catch"
-	around it. 
-	- In the function tcl_findLibraries, the "string match" function
-	only works correctly if $tcl_patchLevel is in one of the forms
-	"?.?a?", "?.?b?" or "?.?.?". Could a "regexp" be used instead,
-	then it allows anything to be appended to the patchLevel
-	string. And it is more efficient.
-	- The tclPkgSetup function assumes that if $type != "load" then
-	the type must be "source". This needn't be true. Some users want
-	to add their own setup types.
-	[RFE: 1138] [Bug: 978]
-
-	* win/tclWinReg.c: 
+	- If the variable $tcl_library contains the empty string, this empty
+	  string will be put in $auto_path. This is not useful at all, it only
+	  slows down later package processing.
+	- If the variable tcl_pkgPath is not set, the "unset __dir" fails.
+	  Thich makes init.tcl totally unusable. Better put a "catch" around
+	  it.
+	- In the function tcl_findLibraries, the "string match" function only
+	  works correctly if $tcl_patchLevel is in one of the forms "?.?a?",
+	  "?.?b?" or "?.?.?". Could a "regexp" be used instead, then it allows
+	  anything to be appended to the patchLevel string. And it is more
+	  efficient.
+	- The tclPkgSetup function assumes that if $type != "load" then the
+	  type must be "source". This needn't be true. Some users want to add
+	  their own setup types.
+	[RFE 1138] [Bug 978]
+
+	* win/tclWinReg.c:
 	* doc/registry.n: Added support for HKEY_PERFORMANCE_DATA and
-	HKEY_DYN_DATA keys. [Bug: 1109]
+	HKEY_DYN_DATA keys. [Bug 1109]
 
-	* win/tclWinInit.c (TclPlatformInit): Added code to ensure
-	tcl_pkgPath is set to "" when no registry entry is found. [Bug: 978]
+	* win/tclWinInit.c (TclPlatformInit): Added code to ensure tcl_pkgPath
+	is set to "" when no registry entry is found. [Bug 978]
 
-1999-02-01    <stanton@GASPODE>
+1999-02-01  Scott Stanton  <stanton@GASPODE>
 
 	* generic/tclBasic.c:
 	* generic/tclCmdAH.c:
@@ -2464,208 +2405,204 @@
 	* generic/tclProc.c:
 	* generic/tclTest.c:
 	* generic/tclTimer.c:
-	* generic/tcl.h: Made eval interfaces compatible with 8.0 by
-	renaming Tcl_EvalObj to Tcl_EvalObjEx, renaming Tcl_Eval2 to
-	Tcl_EvalEx and restoring Tcl_EvalObj and Tcl_GlobalEvalObj
-	interfaces so they match Tcl 8.0.
+	* generic/tcl.h: Made eval interfaces compatible with 8.0 by renaming
+	Tcl_EvalObj to Tcl_EvalObjEx, renaming Tcl_Eval2 to Tcl_EvalEx and
+	restoring Tcl_EvalObj and Tcl_GlobalEvalObj interfaces so they match
+	Tcl 8.0.
 
-1999-01-28    <stanton@GASPODE>
+1999-01-28  Scott Stanton  <stanton@GASPODE>
 
 	* Merged Tcl 8.0.5b1 changes.
-	
+
 	* generic/tclUtil.c (Tcl_DStringSetLength): Changed so the buffer
-	overallocates in a manner similar to Tcl_DStringAppend.  This
-	should improve performance for TclUniCharToUtfDString.
+	overallocates in a manner similar to Tcl_DStringAppend. This should
+	improve performance for TclUniCharToUtfDString.
 
 1998-12-11    === Tcl 8.1b1 Release ===
-	
-1998-12-10    <stanton@GASPODE>
+
+1998-12-10  Scott Stanton  <stanton@GASPODE>
 
 	* Fixed lots of files that used TCL_THREAD instead of TCL_THREADS.
-	
+
 	* generic/tclEncoding.c (Tcl_FreeEncoding): Moved most of the code
 	into a static FreeEncoding routine that does not grab the
-	encodingMutex to avoid deadlocks/races when called from other
-	routines that already have the mutex.
+	encodingMutex to avoid deadlocks/races when called from other routines
+	that already have the mutex.
 
-1998-12-09    <stanton@GASPODE>
+1998-12-09  Scott Stanton  <stanton@GASPODE>
 
-	* library/msgcat1.0/msgcat.tcl: Fixed bad export list, fixed so
-	all locale strings are converted to lower case, including file
-	names.
+	* library/msgcat1.0/msgcat.tcl: Fixed bad export list, fixed so all
+	locale strings are converted to lower case, including file names.
 
-	* generic/regcomp.c (makescan): Fixed bug in longest match case
-	that caused anchored patterns to fail. [Bug: 897]
+	* generic/regcomp.c (makescan): Fixed bug in longest match case that
+	caused anchored patterns to fail. [Bug 897]
 
-1998-12-08    <stanton@GASPODE>
+1998-12-08  Scott Stanton  <stanton@GASPODE>
 
-	* library/msgcat1.0/msgcat.tcl: changed mc to invoke mcunknown in
-	the calling context, changed locale lookups to be case insensitive
+	* library/msgcat1.0/msgcat.tcl: changed mc to invoke mcunknown in the
+	calling context, changed locale lookups to be case insensitive
 
-1998-12-07    <stanton@GASPODE>
+1998-12-07  Scott Stanton  <stanton@GASPODE>
 
 	* generic/tclAlloc.c (TclpRealloc): Fixed a memory allocation bug
-	where big blocks that were reallocated into a different heap
-	location were not being placed into the bigBlocks list. [Bug: 933]
+	where big blocks that were reallocated into a different heap location
+	were not being placed into the bigBlocks list. [Bug 933]
 
 	* tests/msgcat.test: Added message catalog test suite.
 
 	* library/msgcat1.0/msgcat.tcl: minor bug fixes, integrated latest
 	changes from Mark Harrison.
 
-1998-12-04    <stanton@GASPODE>
+1998-12-04  Scott Stanton  <stanton@GASPODE>
 
-	* library/msgcat1.0/msgcat.tcl: Changed code to conform to Tcl
-	coding standards.  Changed to use file join for portability.
+	* library/msgcat1.0/msgcat.tcl: Changed code to conform to Tcl coding
+	standards. Changed to use file join for portability.
 
 	* library/msgcat1.0: Added initial implementaion of Tcl message
 	catalog package contributed by Mark Harrison.
 
-1998-12-03    <stanton@GASPODE>
+1998-12-03  Scott Stanton  <stanton@GASPODE>
 
-	* win/tclWinPipe.c (BuildCommandLine): Fixed bug that kept
-	arguments containing spaces from being properly quoted.
+	* win/tclWinPipe.c (BuildCommandLine): Fixed bug that kept arguments
+	containing spaces from being properly quoted.
 
 	* tests/defs: Changed so auto_path is set to only contain the Tcl
-	library directory.  This keeps the tests from accidentally picking
-	up stuff in installed packages. 
+	library directory. This keeps the tests from accidentally picking up
+	stuff in installed packages.
 
-	* generic/tclUtil.c (Tcl_StringMatch): Changed to match 8.0
-	behavior in corner case where there is no closing bracket.
+	* generic/tclUtil.c (Tcl_StringMatch): Changed to match 8.0 behavior
+	in corner case where there is no closing bracket.
 
-1998-12-02    <stanton@GASPODE>
+1998-12-02  Scott Stanton  <stanton@GASPODE>
 
-	* win/tclWinPipe.c (TclpCreateCommandChannel): Changed
-	reader/writer threads to have THREAD_PRIORITY_HIGHEST so they will
-	have a chance to run whenever there is something to do.
+	* win/tclWinPipe.c (TclpCreateCommandChannel): Changed reader/writer
+	threads to have THREAD_PRIORITY_HIGHEST so they will have a chance to
+	run whenever there is something to do.
 
 	* generic/tclIO.c (WriteBytes, WriteChars): Fixed so extraneous
 	flushes do not happen in line mode.
-	(TranslateOutputEOL): Made translation more efficient in line mode
-	and fixed a buffer overflow bug in CRLF translation. [Bug: 887]
+	(TranslateOutputEOL): Made translation more efficient in line mode and
+	fixed a buffer overflow bug in CRLF translation. [Bug 887]
 
-1998-12-02    <welch@SAGE>
+1998-12-02  Brent Welch  <welch@SAGE>
 
 	* Updated patchlevel to 8.1b1
 
-1998-12-02    <stanton@GASPODE>
+1998-12-02  Scott Stanton  <stanton@GASPODE>
 
-	* generic/regc_color.c (subcolor): Added check for error case to
-	avoid an out of bounds array reference.
+	* generic/regc_color.c (subcolor): Added check for error case to avoid
+	an out of bounds array reference.
 
 	* generic/tclCmdAH.c (Tcl_EncodingObjCmd): Changed to avoid using
 	Tcl_DStringResult because it is not binary clean.
 
-	* generic/tclParse.c (Tcl_ParseCommand): Fixed bug in comment
-	parsing where a trailing comment looked like an incomplete
-	command. 
+	* generic/tclParse.c (Tcl_ParseCommand): Fixed bug in comment parsing
+	where a trailing comment looked like an incomplete command.
 
-1998-12-02    <welch@SAGE>
+1998-12-02  Brent Welch  <welch@SAGE>
 
 	* Merged changes from 8.0.4, especially the new pkg_mkIndex
 
-1998-12-01    <stanton@GASPODE>
+1998-12-01  Scott Stanton  <stanton@GASPODE>
 
-	* generic/tclIO.c (Tcl_ReadChars): Added a call to UpdateInterest
-	so we don't block when there is data sitting in the buffers.
+	* generic/tclIO.c (Tcl_ReadChars): Added a call to UpdateInterest so
+	we don't block when there is data sitting in the buffers.
 
-	* generic/tclTest.c (TestevalobjvObjCmd): Updated for EvalObjv
-	change.
+	* generic/tclTest.c (TestevalobjvObjCmd): Updated for EvalObjv change.
 
 	* tests/parse.test: Updated tests for EvalObjv change.
 
-	* generic/tclParse.c (EvalObjv, Tcl_EvalObjv): Changed
-	Tcl_EvalObjv interface to remove string and length arguments,
-	preserved original interface as EvalObjv for internal use.
+	* generic/tclParse.c (EvalObjv, Tcl_EvalObjv): Changed Tcl_EvalObjv
+	interface to remove string and length arguments, preserved original
+	interface as EvalObjv for internal use.
 
-	* generic/tcl.h: Changed Tcl_EvalObjv interface to remove string
-	and length arguments.
+	* generic/tcl.h: Changed Tcl_EvalObjv interface to remove string and
+	length arguments.
 
-	* doc/Eval.3: Updated documentation for Tcl_EvalObjv to remove
-	string and length arguments.
+	* doc/Eval.3: Updated documentation for Tcl_EvalObjv to remove string
+	and length arguments.
 
 	* generic/tclCompCmds.c (TclCompileForeachCmd): Fixed code that
 	corrupted the exceptDepth value in the compile environment when
-	foreach failed to compile inline. [Bug: 884]
+	foreach failed to compile inline. [Bug 884]
 
-	* library/encoding/euc-kr.enc: 
-	* library/encoding/ksc5601.enc: 
-	* tools/encoding/ksc5601.txt: 
-	* unix/tclUnixInit.c: Added support for Korean EUC. 
+	* library/encoding/euc-kr.enc:
+	* library/encoding/ksc5601.enc:
+	* tools/encoding/ksc5601.txt:
+	* unix/tclUnixInit.c: Added support for Korean EUC.
 
 	* win/tclWinChan.c (TclpGetDefaultStdChannel): added check for a
 	failure during Tcl_MakeFileChannel.
 
-1998-11-30    <stanton@GASPODE>
+1998-11-30  Scott Stanton  <stanton@GASPODE>
 
-	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): Fixed hang that occurs
-	when trying to close a pipe that is currently being waited on by
-	the notifier thread. [Bug: 607]
+	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): Fixed hang that occurs when
+	trying to close a pipe that is currently being waited on by the
+	notifier thread. [Bug 607]
 
 	* unix/tclUnixFCmd.c (GetPermissionsAttribute): Increase size of
-	returnString buffer to avoid overflow. [Bug: 584]
+	returnString buffer to avoid overflow. [Bug 584]
 
-	* generic/tclThreadTest.c (TclThreadSend): Fixed memory leak due
-	to use of TCL_VOLATILE instead of TCL_DYNAMIC.
+	* generic/tclThreadTest.c (TclThreadSend): Fixed memory leak due to
+	use of TCL_VOLATILE instead of TCL_DYNAMIC.
 
 	* generic/tclThread.c (TclRememberSyncObject): Fixed memory leak
 	caused by failure to reuse condition variables.
 
-	* unix/tclUnixNotfy.c: 	(Tcl_AlertNotifier, Tcl_WaitForEvent,
-	NotifierThreadProc, Tcl_InitNotifier): Fixed race condition caused
-	by incorrect use of condition variables when sending messages
-	between threads.. [Bug: 607]
+	* unix/tclUnixNotfy.c (Tcl_AlertNotifier, Tcl_WaitForEvent,
+	(NotifierThreadProc, Tcl_InitNotifier): Fixed race condition caused by
+	incorrect use of condition variables when sending messages between
+	threads. [Bug 607]
 
 	* generic/tclTestObj.c (TeststringobjCmd): MAX_STRINGS was off by one
 	so the strings array was too small.
 
 	* generic/tclCkalloc.c (Tcl_DbCkfree): Moved mutex lock so
-	ValidateMemory is done inside the mutex to avoid a race condition
-	when validate_memory is enabled. [Bug: 880]
+	ValidateMemory is done inside the mutex to avoid a race condition when
+	validate_memory is enabled. [Bug 880]
 
-1998-11-23    <stanton@GASPODE>
+1998-11-23  Scott Stanton  <stanton@GASPODE>
 
 	* regexec.c: more performance tuning from Henry Spencer.
 
-1998-11-17    <stanton@GASPODE>
+1998-11-17  Scott Stanton  <stanton@GASPODE>
 
-	* tclScan.c: moved "scan" implementation out of tclCmdMZ.c and
-	added Unicode support.  This required a complete reimplementation
-	of the command to avoid using scanf(), which isn't Unicode aware.
-	Two new features were added in the process: %n to return the
-	current number of characters consumed, and XPG3-style %n$ argument
-	order specifiers similar to those provided by the "format"
-	command. [Bug: 833]
+	* tclScan.c: moved "scan" implementation out of tclCmdMZ.c and added
+	Unicode support. This required a complete reimplementation of the
+	command to avoid using scanf(), which isn't Unicode aware. Two new
+	features were added in the process: %n to return the current number of
+	characters consumed, and XPG3-style %n$ argument order specifiers
+	similar to those provided by the "format" command. [Bug 833]
 
-	* tclAlloc.c: changed so allocated memory is always 8-byte aligned
-	to improve memory performance and to ensure that it will work on
-	systems that don't like accessing 4-byte aligned values
-	(e.g. Solaris and HP-UX). [Bug: 834]
+	* tclAlloc.c: changed so allocated memory is always 8-byte aligned to
+	improve memory performance and to ensure that it will work on systems
+	that don't like accessing 4-byte aligned values (e.g. Solaris and
+	HP-UX). [Bug 834]
 
-1998-11-06    <stanton@GASPODE>
+1998-11-06  Scott Stanton  <stanton@GASPODE>
 
-	* tclVar.c (TclGetIndexedScalar): Fixed bug 796, var name was
-	getting lost before being passed to CallTraces.
+	* tclVar.c (TclGetIndexedScalar): Fixed bug 796, var name was getting
+	lost before being passed to CallTraces.
 
-1998-10-21    <stanton@GASPODE>
+1998-10-21  Scott Stanton  <stanton@GASPODE>
 
 	* added "encoding" command
-	
+
 	* Moved internal regexp declarations from tclInt.h to tclRegexp.h
 
 	* integrated regexp updates from Henry Spencer
 
-1998-10-15    <stanton@GASPODE>
+1998-10-15  Scott Stanton  <stanton@GASPODE>
 
 	* tclUtf.c: added Unicode character table support
 
 	* tclInt.h: added TclUniCharIsWordChar
 
-	* tclCmdMZ.c (Tcl_StringObjCmd): added "totitle" subcommand,
-	changed "wordend" and "wordstart" to properly handle Unicode word
-	characters and connector punctuation
+	* tclCmdMZ.c (Tcl_StringObjCmd): added "totitle" subcommand, changed
+	"wordend" and "wordstart" to properly handle Unicode word characters
+	and connector punctuation
 
-1998-10-05    <stanton@GASPODE>
+1998-10-05  Scott Stanton  <stanton@GASPODE>
 
 	* auto.tcl, package.tcl: fixed SCCS strings
 
@@ -2682,17 +2619,16 @@
 
 	* tclExecute.c: fixed off-by-one copying error, fixed merge bugs
 
-	* tclEvent.c: changed so USE_TCLALLOC is tested for value instead
-	of definition
+	* tclEvent.c: changed so USE_TCLALLOC is tested for value instead of
+	definition
 
 	* tclCompCmds.c: replaced SCCS strings, added warnings around code
 	that modifies strings in place
 
 	* interp.test: added test for interp deleting itself
 
-1998-09-30    <stanton@GASPODE>
+1998-09-30  Scott Stanton  <stanton@GASPODE>
 
 	* makefile.vc: fixed so TCL_LIBRARY is set before running tcltest
 
 	* tclWin32Dll.c: removed TclpFinalize, cleanup of merges
-
diff --git a/ChangeLog.2000 b/ChangeLog.2000
index 70d491f..0d20eaf 100644
--- a/ChangeLog.2000
+++ b/ChangeLog.2000
@@ -1,12 +1,11 @@
 2000-12-14  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/tclExecute.c:
-	* tests/expr-old.test:  Re-wrote Tcl's [expr rand()] and
-	[expr srand($seed)] implementations, fixing a range error
-	on some 64-bit platforms.  Added tests that detect the bug.
-	The rewrite changes the seed -> sequence map on 64-bit
-	platforms, only for seed >= 2^31, a slight incompatibility.
-	[Bug 121072, Patch 102781]
+	* tests/expr-old.test: Re-wrote Tcl's [expr rand()] and [expr
+	srand($seed)] implementations, fixing a range error on some 64-bit
+	platforms. Added tests that detect the bug. The rewrite changes the
+	seed -> sequence map on 64-bit platforms, only for seed >= 2^31, a
+	slight incompatibility. [Bug 121072, Patch 102781]
 
 2000-12-10  Don Porter  <dgp@users.sourceforge.net>
 
@@ -14,217 +13,209 @@
 	* library/msgcat/msgcat.tcl:
 	* library/msgcat/pkgIndex.tcl:
 	* library/opt/optparse.tcl:
-	* library/opt/pkgIndex.tcl: Where [uplevel] is used in a proc
-	to evaluate a Tcl built-in command in the caller's context,
-	the built-in commands are now fully namespace-qualified.  This
-	prevents problems when the caller context is in a namespace where
-	the built-in command name has been used by a command in the
-	namespace.  (For example, [::ns::set] might be called instead
-	of the intended [::set]).  [Bug #119422, Patch #102545]
+	* library/opt/pkgIndex.tcl: Where [uplevel] is used in a proc to
+	evaluate a Tcl built-in command in the caller's context, the built-in
+	commands are now fully namespace-qualified. This prevents problems
+	when the caller context is in a namespace where the built-in command
+	name has been used by a command in the namespace. (For example,
+	[::ns::set] might be called instead of the intended [::set]). [Bug
+	119422, Patch 102545]
 
-2000-12-09  jeff hobbs  <jhobbs@interwoven.com>
+2000-12-09  Jeff Hobbs  <jhobbs@interwoven.com>
 
 	* win/tclWinTime.c (CalibrationThread): added lint return value to
-	prevent compiler warning.  [Bug #125005]
+	prevent compiler warning. [Bug 125005]
 
 	* docs/scan.n:
 	* tests/scan.test:
-	* generic/tclScan.c (Tcl_ScanObjCmd): changed %o and %x to use
-	strtoul instead of strtol to correctly preserve scan<>format
-	conversion of large integers.  [Patch #102663, Bug #124600]
+	* generic/tclScan.c (Tcl_ScanObjCmd): changed %o and %x to use strtoul
+	instead of strtol to correctly preserve scan<>format conversion of
+	large integers. [Patch 102663, Bug 124600]
 
 	* generic/tclExecute.c (TclExecuteByteCode): Commited patch fixing
-	handling of {!<boolean>} in expressions. [Patch #102702]
+	handling of {!<boolean>} in expressions. [Patch 102702]
 
-2000-12-08  jeff hobbs  <jhobbs@interwoven.com>
+2000-12-08  Jeff Hobbs  <jhobbs@interwoven.com>
 
-	* library/init.tcl: Added support for PATHEXT variable in
-	auto_execok, recognizing the proper set of executable extensions
-	on Windows.  [Patch #102719]
+	* library/init.tcl: Added support for PATHEXT variable in auto_execok,
+	recognizing the proper set of executable extensions on Windows. [Patch
+	102719]
 
 2000-12-08  Andreas Kupries  <a.kupries@westend.com>
 
-	* generic/tclEncoding.c (LoadTableEncoding): Changed dangerous
-	  code to something less critical. This fixes bug 119417, part A
-	  without affecting the speed when loading encodings.
+	* generic/tclEncoding.c (LoadTableEncoding): Changed dangerous code to
+	something less critical. This fixes [Bug 119417], part A without
+	affecting the speed when loading encodings.
 
 2000-12-08  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/open.n: Added xref to fconfigure and advice on the opening
-	  of binary files.  Should help prevent a recurrence of bugs like
-	  #124558
+	* doc/open.n: Added xref to fconfigure and advice on the opening of
+	binary files. Should help prevent a recurrence of bugs like [Bug
+	124558]
 
-2000-12-07  jeff hobbs  <jhobbs@interwoven.com>
+2000-12-07  Jeff Hobbs  <jhobbs@interwoven.com>
 
 	* generic/tcl.h: added note about need to updated
 	library/dde/pkgIndex.tcl with minor version increment.
 
-	* library/dde/pkgIndex.tcl: updated to use 84 version to reflect
-	the makefile.  Should probably be updated to use its real version
-	at some point. [Patch #102560, Bug #119421]
+	* library/dde/pkgIndex.tcl: updated to use 84 version to reflect the
+	makefile. Should probably be updated to use its real version at some
+	point. [Patch 102560, Bug 119421]
 
-2000-12-06  eric melski  <ericm@ajubasolutions.com>
+2000-12-06  Eric Melski  <ericm@ajubasolutions.com>
 
 	* generic/tcl.h (attemptckalloc): Fixed typo for #define of
-	attemptckalloc (was defined to Tcl_AttempDbCkalloc, should have
-	been Tcl_AttemptDbCkalloc). [Bug: 124384]
+	attemptckalloc (was defined to Tcl_AttempDbCkalloc, should have been
+	Tcl_AttemptDbCkalloc). [Bug 124384]
 
-	* generic/tclCkalloc.c: Added
-	TCL_MEM_DEBUG versions of Tcl_AttemptDbCkrealloc and
-	Tcl_AttemptDbCkalloc. [Bug: 124384].
+	* generic/tclCkalloc.c: Added TCL_MEM_DEBUG versions of
+	Tcl_AttemptDbCkrealloc and Tcl_AttemptDbCkalloc. [Bug 124384].
 
 2000-11-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclExecute.c (TclExecuteByteCode): Logical negation "!"
-	  can now handle string booleans, provided those values are placed
-	  in variables.
+	* generic/tclExecute.c (TclExecuteByteCode): Logical negation "!"  can
+	now handle string booleans, provided those values are placed in
+	variables.
 
-	* tests/expr.test (expr-13.17): Check that [expr {!$var}] can
-	  negate the string-versions of booleans "yes", "false", etc.
+	* tests/expr.test (expr-13.17): Check that [expr {!$var}] can negate
+	the string-versions of booleans "yes", "false", etc.
 
 	* library/tcltest/tcltest.tcl (getMatchingFiles,
-	  getMatchingDirectories):
-	* tools/man2html.tcl (doDir): 
-	* tools/man2help.tcl (doDir): 
-	* library/package.tcl (tclPkgUnknown,tclMacPkgSearch): 
+	(getMatchingDirectories):
+	* tools/man2html.tcl (doDir):
+	* tools/man2help.tcl (doDir):
+	* library/package.tcl (tclPkgUnknown,tclMacPkgSearch):
 	* library/safe.tcl (AddSubDirs): [glob] uses -directory instead of
-	  unsafe [file join] to fix Bug #123313
+	unsafe [file join]. [Bug 123313]
 
 	* generic/tclIndexObj.c:
 	* generic/tclTestObj.c (TestindexobjCmd): Changed internal
-	  representation of index objects to fix Bug #119082; fix
-	  shouldn't be visible to outside world...
+	representation of index objects to fix [Bug 119082]; fix shouldn't be
+	visible to outside world...
 
-	* generic/tclTest.c (TestGetIndexFromObjStructObjCmd): 
-	* tests/indexObj.test: (indexObj-6.*) Added to test for presence
-	  of Bug #119082.
+	* generic/tclTest.c (TestGetIndexFromObjStructObjCmd):
+	* tests/indexObj.test: (indexObj-6.*) Added to test for presence of
+	[Bug 119082].
 
 2000-11-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Fixed memory leak from Bug
-	  #119398
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Fixed memory leak from [Bug
+	119398]
 
 	* library/init.tcl (unknown): Added specific level parameters to
-	  all uplevel invokations to boost performance; didn't dare touch
-	  the "namespace inscope" stuff though, since it looks sensitive
-	  to me!  Should fix Bug #123217, though testing is tricky...
+	all uplevel invokations to boost performance; didn't dare touch
+	the "namespace inscope" stuff though, since it looks sensitive
+	to me!  Should fix [Bug 123217], though testing is tricky...
 
 2000-11-21  Andreas Kupries  <a.kupries@westend.com>
 
-	* All of the changes below are described in TIP #7 ~ Specification
- 	  and result from the application of the patch contained
- 	  therein. Creator of the patch is Kevin Kenny
- 	  <kennykb@crd.ge.com>. The patch used here is actually a bit
- 	  different. Two MS specific constant values (format FOOui64) were
- 	  replaced with a more portable formatting of the values and an
- 	  additional cast to LONGLONG. My cross-compiling gcc was unable to
-	  process the original form. The SF Id of the patch is 102459.
-
-	* tclWinTime.c: Add to the static data a set of variables that
- 	  manage the phase-locked techniques, including a
- 	  ''CRITICAL_SECTION'' to guard them so that multi-threaded code
- 	  is stable.
-
-	* tclWinTime.c: Modify ''TclpGetSeconds'' to call ''TclpGetTime''
- 	  and return the 'seconds' portion of the result.  This change is
- 	  necessary to make sure that the two times are consistent near
- 	  the rollover from one second to another.
+	All of the changes below are described in TIP #7 ~ Specification and
+	result from the application of the patch contained therein. Creator of
+	the patch is Kevin Kenny <kennykb@crd.ge.com>. The patch used here is
+	actually a bit different. Two MS specific constant values (format
+	FOOui64) were replaced with a more portable formatting of the values
+	and an additional cast to LONGLONG. My cross-compiling gcc was unable
+	to process the original form. [Patch 102459]
+
+	* tclWinTime.c: Add to the static data a set of variables that manage
+	the phase-locked techniques, including a ''CRITICAL_SECTION'' to guard
+	them so that multi-threaded code is stable.
+
+	* tclWinTime.c: Modify ''TclpGetSeconds'' to call ''TclpGetTime'' and
+	return the 'seconds' portion of the result. This change is necessary
+	to make sure that the two times are consistent near the rollover from
+	one second to another.
 
 	* tclWinTime.c: Modify ''TclpGetClicks'' to use TclpGetTime to
- 	  determine the click count as a number of microseconds.
-
-	* tclWinTime.c: Modify ''TclpGetTime'' to return the time as
- 	  M*Q+B, where Q is the result of ''QueryPerformanceCounter'', and
- 	  M and B are variables maintained by the phase-locked loop to
- 	  keep the result as close as possible to the system clock.  The
- 	  ''TclpGetTime'' call will also launch the phase-lock management
- 	  in a separate thread the first time that it is invoked.  If the
- 	  performance counter is unavailable, or if its frequency is not
- 	  one of the two common 8254-compatible rates, then
- 	  ''TclpGetTime'' will return the result of ''ftime'' as it does
- 	  in Tcl 8.3.2.
-
-	* tclWinTime.c: Add the clock calibration procedure.  The
- 	  calibration is somewhat complex; to save space, the reader is
- 	  referred to the reference implementation for the details of how
- 	  the time base and frequency are maintained.
-
-	* tclWinNotify.c: Modify ''Tcl_Sleep'' to test that the process
- 	  has, in fact, slept for the requisite time by calling
- 	  ''TclpGetTime'' and comparing with the desired time.  Otherwise,
- 	  roundoff errors may cause the process to awaken early.
-
-	* tclWinTest.c: Add a ''testwinclock'' command.  This command
- 	  returns a four element list comprising the seconds and
- 	  microseconds portions of the system clock and the seconds and
- 	  microseconds portions of the Tcl clock.
-
-	* winTime.test: Add to the test suite a test that makes sure that
- 	  the Tcl clock stays within 1.1 ms of the system clock over the
- 	  duration of the test.
+	determine the click count as a number of microseconds.
+
+	* tclWinTime.c: Modify ''TclpGetTime'' to return the time as M*Q+B,
+	where Q is the result of ''QueryPerformanceCounter'', and M and B are
+	variables maintained by the phase-locked loop to keep the result as
+	close as possible to the system clock. The ''TclpGetTime'' call will
+	also launch the phase-lock management in a separate thread the first
+	time that it is invoked. If the performance counter is unavailable, or
+	if its frequency is not one of the two common 8254-compatible rates,
+	then ''TclpGetTime'' will return the result of ''ftime'' as it does in
+	Tcl 8.3.2.
+
+	* tclWinTime.c: Add the clock calibration procedure. The calibration
+	is somewhat complex; to save space, the reader is referred to the
+	reference implementation for the details of how the time base and
+	frequency are maintained.
+
+	* tclWinNotify.c: Modify ''Tcl_Sleep'' to test that the process has,
+	in fact, slept for the requisite time by calling ''TclpGetTime'' and
+	comparing with the desired time. Otherwise, roundoff errors may cause
+	the process to awaken early.
+
+	* tclWinTest.c: Add a ''testwinclock'' command. This command returns a
+	four element list comprising the seconds and microseconds portions of
+	the system clock and the seconds and microseconds portions of the Tcl
+	clock.
+
+	* winTime.test: Add to the test suite a test that makes sure that the
+	Tcl clock stays within 1.1 ms of the system clock over the duration of
+	the test.
 
 2000-11-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/global.n: 
-	* doc/upvar.n: 
-	* doc/variable.n: Improved documentation to mention that variables
-	  so created are listed in [info locals] and added a few more
-	  cross-links between these commands.  Fixes bug #119387
+	* doc/global.n:
+	* doc/upvar.n:
+	* doc/variable.n: Improved documentation to mention that variables so
+	created are listed in [info locals] and added a few more cross-links
+	between these commands. [Bug 119387]
 
 2000-11-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tests/safe.test: (safe-4.3):
-	* generic/tclVar.c (TclLookupVar): Changed again.  Now passes all
-	  the tests, though one needed modifying since it required the
-	  wrong answer.  (Why on earth do we have inline modification of
-	  argument strings?  This sort of thing is horrendous to debug and
-	  doesn't work well in a multithreaded environment!)  Fixes bug
-	  119192.
+	* generic/tclVar.c (TclLookupVar): Changed again. Now passes all the
+	tests, though one needed modifying since it required the wrong answer.
+	(Why on earth do we have inline modification of argument strings? This
+	sort of thing is horrendous to debug and doesn't work well in a
+	multithreaded environment!) [Bug 119192]
 
-	* tests/var.test: (var-1.19) If my attempts to fix the problem
-	  aren't right yet, my attempts to describe it look pretty good to
-	  me...
+	* tests/var.test: (var-1.19) If my attempts to fix the problem aren't
+	right yet, my attempts to describe it look pretty good to me...
 
 2000-11-16  Andreas Kupries  <a.kupries@westend.com>
 
 	* win/tclWinPort.h (line 69): Changed reference to winsock2.h into
- 	  winsock.h. This was a leftover from a foray into using winsock
- 	  version 2 (History lesson from Scott Redman and Jeff
- 	  Hobbs). This code was no problem when compiling Tcl itself, but
- 	  could trip extensions. Fixes bug 122568.
+	winsock.h. This was a leftover from a foray into using winsock version
+	2 (History lesson from Scott Redman and Jeff Hobbs). This code was no
+	problem when compiling Tcl itself, but could trip extensions. [Bug
+	122568]
 
-2000-11-15  jeff hobbs  <jeff.hobbs@acm.org>
+2000-11-15  Jeff Hobbs  <jeff.hobbs@acm.org>
 
-	* unix/Makefile.in: removed bp.c references (hasn't existed in a
-	  long time).  Corrected 'make dist' to make dist with unversioned
-	  library directories (same as out of cvs), so make install works
-	  correctly with either source tree.
+	* unix/Makefile.in: removed bp.c references (hasn't existed in a long
+	time). Corrected 'make dist' to make dist with unversioned library
+	directories (same as out of cvs), so make install works correctly with
+	either source tree.
 
-2000-11-15  jeff hobbs  <jeff.hobbs@acm.org>
+2000-11-15  Jeff Hobbs  <jeff.hobbs@acm.org>
 
-	* generic/tclVar.c (TclLookupVar): reverted fix below as it broke
-	  all other array unset error reporting.  Bug-119192 is still
-	  open.
+	* generic/tclVar.c (TclLookupVar): reverted fix below as it broke all
+	other array unset error reporting.  Bug 119192 is still open.
 
 2000-11-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclVar.c (TclLookupVar): Changed references to part2 to
-	  use elName instead in various error message generating spots, so
-	  as to fix Bug-119192.
+	* generic/tclVar.c (TclLookupVar): Changed references to part2 to use
+	elName instead in various error message generating spots. [Bug 119192]
 
 2000-11-03  David Gravereaux  <davygrvy@ajubasolutions.com>
 
-	* win/.cvsignore: Removed 'configure' from the glob list now
-	  that it's included.
+	* win/.cvsignore: Removed 'configure' from the glob list now that it's
+	included.
 
 2000-11-03  Jeff Hobbs  <hobbs@ajubasolutions.com>
 
 	8.4a2 RELEASE
 
-	* unix/Makefile.in (install-libraries, dist): 
+	* unix/Makefile.in (install-libraries, dist):
 	* win/makefile.vc (install-libraries):
-	* win/Makefile.in (install-libraries): updated to install
-	unversioned library directories into versioned directories.
+	* win/Makefile.in (install-libraries): updated to install unversioned
+	library directories into versioned directories.
 
 	* tools/tcl.wse.in: updated for unversioning of library dirs
 
@@ -234,31 +225,31 @@
 
 	* generic/tclStubInit.c:
 	* generic/tclDecls.h:
-	* generic/tcl.decls: added Tcl_SetMainLoop proc that allows people
-	to set a main loop that will run for tclsh.
+	* generic/tcl.decls: added Tcl_SetMainLoop proc that allows people to
+	set a main loop that will run for tclsh.
 	* generic/tcl.h: added Tcl_MainLoopProc typedef
 	* generic/tclMain.c (Tcl_SetMainLoop, StdinProc, Prompt): new
-	StdinProc and Prompt static procs and Tcl_SetMainLoop stubs proc.
-	The first two handle a fileevent based prompt (taken from
-	tkMain.c).  Tcl_SetMainLoop enables the interactive setting of a
-	main loop procedure.  This enables Tk to be a loadable package.
+	StdinProc and Prompt static procs and Tcl_SetMainLoop stubs proc. The
+	first two handle a fileevent based prompt (taken from tkMain.c).
+	Tcl_SetMainLoop enables the interactive setting of a main loop
+	procedure. This enables Tk to be a loadable package.
 
 2000-11-02  David Gravereaux  <davygrvy@ajubasolutions.com>
 
-	* generic/tclEvent.c: tclLibraryPath Tcl_Obj didn't have a way
-	to share its data among threads.  This caused Tcl_Init() to
-	always fail in threads.  Added a way to pass the data around
-	with a global char*.  [BUG: 5301]
+	* generic/tclEvent.c: tclLibraryPath Tcl_Obj didn't have a way to
+	share its data among threads. This caused Tcl_Init() to always fail in
+	threads. Added a way to pass the data around with a global char*.
+	[BUG: 5301]
 
 2000-11-02  Jeff Hobbs  <hobbs@ajubasolutions.com>
 
 	* unix/configure:
 	* unix/dltest/configure:
 	* win/configure:
-	* tools/configure: checked in configure scripts so people doing
-	CVS checkouts aren't required to have autoconf.  Changes to
-	configure.in in the future will require the corresponding
-	configure script to also be re-autoconf'ed and checked in.
+	* tools/configure: checked in configure scripts so people doing CVS
+	checkouts aren't required to have autoconf. Changes to configure.in in
+	the future will require the corresponding configure script to also be
+	re-autoconf'ed and checked in.
 
 	* win/makefile.vc:
 	* win/tcl.m4: makefile fixes for Win64 support
@@ -270,14 +261,14 @@
 
 	* unix/tcl.m4: removed use of -lbsd and -ldl for AIX-5.
 
-	* tests/subst.test: added tests for non-zero return code handling
-	by subst.
+	* tests/subst.test: added tests for non-zero return code handling by
+	subst.
 	* generic/tclParse.c (Tcl_EvalEx): corrected handling of non-zero,
-	non-error return code cases for subst. [BUG: 119829]
+	non-error return code cases for subst. [Bug 119829]
 
-	* generic/tclVar.c (TclVarTraceExists): Corrected excessive mem
-	use when info exists was called on a non-existent array element.
-	[BUG: 119213, 119336]
+	* generic/tclVar.c (TclVarTraceExists): Corrected excessive mem use
+	when info exists was called on a non-existent array element. [Bug
+	119213, 119336]
 
 2000-10-30  David Gravereaux  <davygrvy@ajubasolutions.com>
 
@@ -290,8 +281,8 @@
 
 2000-10-30  Jeff Hobbs  <hobbs@ajubasolutions.com>
 
-	* unix/tclUnixInit.c: added default encoding map from
-	"ja_JP.eucJP" to "euc-jp". (takahashi)
+	* unix/tclUnixInit.c: added default encoding map from "ja_JP.eucJP" to
+	"euc-jp". (takahashi)
 
 	* tests/clock.test: corrected clock-2.* test numbering
 
@@ -306,68 +297,67 @@
 	* unix/configure.in:
 	* unix/tcl.m4: added support for AIX-5.
 
-	* generic/tclIO.c (Tcl_NotifyChannel): removed #ifdef around code
-	for old channel structures, placed preserve/release around statePtr
-	* generic/tclIO.c (CloseChannel): the statePtr for a channel was
-	not being freed when the last channel in a stack was freed,
-	causing a mem leak.
+	* generic/tclIO.c (Tcl_NotifyChannel): removed #ifdef around code for
+	old channel structures, placed preserve/release around statePtr
+	* generic/tclIO.c (CloseChannel): the statePtr for a channel was not
+	being freed when the last channel in a stack was freed, causing a mem
+	leak.
 
 	* unix/tclUnixChan.c: updated channel types to strict
-	TCL_CHANNEL_VERSION_2 style to avoid compiler warnings.  They work
+	TCL_CHANNEL_VERSION_2 style to avoid compiler warnings. They work
 	either way, but this avoids compiler warnings (that worries people).
 
 2000-10-27  Jennifer Hom  <jenn@ajubasolutions.com>
 
-	* library/tcltest1.0/tcltest.tcl: Removed a cd into the test
-	directory in runAllTests that screwed up the temporary directory
-	setting, effectively preventing users from running tests on
-	multiple platforms at the same time.
+	* library/tcltest1.0/tcltest.tcl: Removed a cd into the test directory
+	in runAllTests that screwed up the temporary directory setting,
+	effectively preventing users from running tests on multiple platforms
+	at the same time.
 
 2000-10-26  David Gravereaux <davygrvy@ajubasolutions.com>
 
-	* win/tclWinFile.c (TclpMatchFilesTypes): NULL was being set to
-	"attr" which was a DWORD.  Changed NULL to zero because a 'void *'
-	can't be set to a DWORD to avoid the compiler warning.
+	* win/tclWinFile.c (TclpMatchFilesTypes): NULL was being set to "attr"
+	which was a DWORD. Changed NULL to zero because a 'void *' can't be
+	set to a DWORD to avoid the compiler warning.
 
 2000-10-24  Jennifer Hom  <jenn@ajubasolutions.com>
 
 	* tests/all.tcl: Removed support for tcltest 1.0.
-	
+
 	* tests/tcltest.test:
 	* library/tcltest1.0/tcltest.tcl:
 	* library/tcltest1.0/pkgIndex.tcl:
 	* docs/tcltest.n: Moved tcltest2 code so that it's the standard
-	version of tcltest.  Removed all tcltest2 files
-	(tests/tcltest2.test, library/tcltest1.0/tcltest2.tcl,
-	docs/tcltest2.n). 
+	version of tcltest. Removed all tcltest2 files (tests/tcltest2.test,
+	library/tcltest1.0/tcltest2.tcl, docs/tcltest2.n).
 
 2000-10-20  Jeff Hobbs  <hobbs@ajubasolutions.com>
 
 	* win/tclWinFile.c (TclpMatchFilesTypes): made the stat call only
-	occur when necessary (for 'glob' command).  Significantly speeds
-	up glob command from 8.3. [BUG: 6216]
+	occur when necessary (for 'glob' command). Significantly speeds up
+	glob command from 8.3. [BUG: 6216]
 
 2000-10-19  Jennifer Hom  <jenn@ajubasolutions.com>
 
 	* library/tcltest1.0/tcltest2.tcl:
 	* tests/tcltest2
-	* doc/tcltest2.n: Code and documentation cleanup.  Modified
-	-verbose to take list of keywords as well as string of letters.
-	Removed Tcl version information from tcltest. Removed
-	tcltest::grep from tcltest package. Added optional 3rd directory
-	argument to  makeFile/makeDirectory and removeFile/removeDirectory.
+	* doc/tcltest2.n: Code and documentation cleanup. Modified -verbose to
+	take list of keywords as well as string of letters. Removed Tcl
+	version information from tcltest. Removed tcltest::grep from tcltest
+	package. Added optional 3rd directory argument to
+	makeFile/makeDirectory and removeFile/removeDirectory.
 
 	* tests/basic.test: Changed references to tcltest::tclVersion to
 	hardcoded numbers.
-	* generic/tcl.h: Changed reference to tcltest2.tcl and tcltest.tcl
-	in comments to tests/basic.test.
+	* generic/tcl.h: Changed reference to tcltest2.tcl and tcltest.tcl in
+	comments to tests/basic.test.
 
 2000-10-06  David Gravereaux  <davygrvy@ajubasolutions.com>
 
-	* win/tclWinChan.c: moved Win2K bug case test with GetStdHandle()
-	from TclpGetDefaultStdChannel into Tcl_MakeFileChannel to enable
-	a more general method in detecting invalid OS handles rather than
-	just a specific known case. [BUG: 5971]
+	* win/tclWinChan.c: moved Win2K bug case test with GetStdHandle() from
+	TclpGetDefaultStdChannel into Tcl_MakeFileChannel to enable a more
+	general method in detecting invalid OS handles rather than just a
+	specific known case. [BUG: 5971]
 
 2000-10-06  Jeff Hobbs  <hobbs@ajubasolutions.com>
 
@@ -383,10 +373,10 @@
 
 	* library/tcltest1.0/tcltest2.tcl:
 	* tests/tcltest2.test:
-	* doc/tcltest2.n: Modified the new form of the test command to
-	accept both attribute-value pairs and command line options.
-	Updated the tests and the documentation for this new format.
-	Also changed the option names for the test command.
+	* doc/tcltest2.n: Modified the new form of the test command to accept
+	both attribute-value pairs and command line options. Updated the tests
+	and the documentation for this new format. Also changed the option
+	names for the test command.
 
 2000-09-29  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -394,24 +384,24 @@
 	space parity on Windows (Eason) [Bug 6057].
 
 	* win/Makefile.in: commented use of TESTFLAGS
-	* unix/Makefile.in: added TESTFLAGS to test target to
-	conform with Windows makefile and TEA style.
+	* unix/Makefile.in: added TESTFLAGS to test target to conform with
+	Windows makefile and TEA style.
 
 	* tests/stack.test: prevented possible crash on systems with low
-	default stacksize (Tru64, AIX) in infinite recursion test.  A
-	solution to check remaining stack space in the core is best, but
-	hard to do in a cross-platform manner.
+	default stacksize (Tru64, AIX) in infinite recursion test. A solution
+	to check remaining stack space in the core is best, but hard to do in
+	a cross-platform manner.
 
-	* generic/tclIOGT.c (FLUSH_DELAY): renamed DELAY define to
-	FLUSH_DELAY to avoid defn conflict using Tru64's cc.
+	* generic/tclIOGT.c (FLUSH_DELAY): renamed DELAY define to FLUSH_DELAY
+	to avoid defn conflict using Tru64's cc.
 
 2000-09-28  Jeff Hobbs  <hobbs@ajubasolutions.com>
 
 	* tools/tcl.wse.in: added tclPlatDecls.h and tkPlatDecls.h to the
 	Windows .exe install.
 
-	* tests/fCmd.test (fCmd-6.20): corrected test to remove
-	c:/tcl8975@ after creating it.
+	* tests/fCmd.test (fCmd-6.20): corrected test to remove c:/tcl8975@
+	after creating it.
 
 	* tests/fileName.test: cleaned up the testing of glob patterns for
 	c:/globTest (Windows) to directly create/remove directory.
@@ -421,13 +411,13 @@
 	* generic/tcl.decls:
 	* generic/tclIO.c: updated Tcl_IsChannelShared,
 	Tcl_IsChannelRegistered, Tcl_CutChannel, Tcl_SpliceChannel,
-	Tcl_IsChannelExisting, and Tcl_ClearChannelHandlers to conform to
-	the new stacked channel implementation.  Their stub slots were
-	also moved to give preference to the new 8.3.2 stub functions.
-	This will cause an incompatability with 8.4a1 only.
+	Tcl_IsChannelExisting, and Tcl_ClearChannelHandlers to conform to the
+	new stacked channel implementation. Their stub slots were also moved
+	to give preference to the new 8.3.2 stub functions. This will cause an
+	incompatability with 8.4a1 only.
 	(StopCopy): fixed a bug introduced by a partial fix in 8.3.2 that
 	didn't set nonBlocking correctly when resetting the flags for the
-	write side.  [Bug: 6261]
+	write side. [Bug: 6261]
 
 	* doc/ChnlStack.3:
 	* doc/CrtChannel.3:
@@ -451,7 +441,7 @@
 	* win/tclWinPipe.c:
 	* win/tclWinSerial.c:
 	* win/tclWinSock.c: Up-port of changes made in 8.3.2 to 8.4a2 code
-	base.  Most of these changes relate to the rewrite of the stacked
+	base. Most of these changes relate to the rewrite of the stacked
 	channel implementation, with a few config related fixes.
 
 	Following is an asynchronous include of the applicable ChangeLog
@@ -467,67 +457,66 @@
 	* doc/CrtChannel.3: updated the docs to be aware of the
 	TCL_CHANNEL_VERSION_2 style of Tcl channels.
 
-	* generic/tclIO.c (Tcl_CreateChannel): added assertion to verify
-	that the new channel versioning will be binary compatible with
-	older channel drivers.
+	* generic/tclIO.c (Tcl_CreateChannel): added assertion to verify that
+	the new channel versioning will be binary compatible with older
+	channel drivers.
 
 2000-08-05  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclIOGT.c (TclChannelTransform): fixed segfault that
-	would occur when transforming a channel with a proc that did not
-	yet exist. (Kupries)
+	* generic/tclIOGT.c (TclChannelTransform): fixed segfault that would
+	occur when transforming a channel with a proc that did not yet exist.
+	(Kupries)
 
 	* generic/tclTest.c (TestChannelCmd): added some lint init'ing of
 	statePtr and chan vars.
 
 2000-07-26  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* merged core-8-3-1-io-rewrite back into core-8-3-1-branch.
-	The core-8-3-1-io-rewrite branch should now be considered defunct.
+	Merged core-8-3-1-io-rewrite back into core-8-3-1-branch. The
+	core-8-3-1-io-rewrite branch should now be considered defunct.
 
 	* generic/tclStubInit.c:
 	* generic/tclDecls.h:
 	* generic/tcl.decls:
 	* generic/tcl.h:
-	* generic/tclIO.c: moved the Tcl_Channel* macros from tcl.h to
-	tclIO.c and made them proper stubbed functions.  These are:
-	Tcl_ChannelName, Tcl_ChannelVersion, Tcl_ChannelBlockModeProc,
-	Tcl_ChannelCloseProc, Tcl_ChannelClose2Proc, Tcl_ChannelInputProc,
-	Tcl_ChannelOutputProc, Tcl_ChannelSeekProc, Tcl_ChannelSetOptionProc,
+	* generic/tclIO.c: moved the Tcl_Channel* macros from tcl.h to tclIO.c
+	and made them proper stubbed functions. These are: Tcl_ChannelName,
+	Tcl_ChannelVersion, Tcl_ChannelBlockModeProc, Tcl_ChannelCloseProc,
+	Tcl_ChannelClose2Proc, Tcl_ChannelInputProc, Tcl_ChannelOutputProc,
+	Tcl_ChannelSeekProc, Tcl_ChannelSetOptionProc,
 	Tcl_ChannelGetOptionProc, Tcl_ChannelWatchProc,
-	Tcl_ChannelGetHandleProc, Tcl_ChannelFlushProc,
-	and Tcl_ChannelHandlerProc.  These should be used to access the
+	Tcl_ChannelGetHandleProc, Tcl_ChannelFlushProc, and
+	Tcl_ChannelHandlerProc. These should be used to access the
 	Tcl_ChannelType structure instead of direct pointer dereferencing.
 
-	* tests/iogt.test: added RCS string, marked tests 2.* to be
-	unixOnly due to underlying system differences.
+	* tests/iogt.test: added RCS string, marked tests 2.* to be unixOnly
+	due to underlying system differences.
 
 2000-07-25 Andreas Kupries <a.kupries@westend.com>
 
 	* tests/iogt.test: (line 866f) New tests iogt-6.[01], highlighting
- 	  buffering trouble when stacking and unstacking transformations.
-	  iogt-6.0 is solved, see the changes below. iogt-6.1 remains, for
- 	  now, due to the perceived complexity of solutions.
+	buffering trouble when stacking and unstacking transformations.
+	iogt-6.0 is solved, see the changes below. iogt-6.1 remains, for now,
+	due to the perceived complexity of solutions.
 
-	* generic/tclIO.h: (line 139f) struct Channel, added a buffer
-	  queue, to hold data pushed back when stacking a transformation.
+	* generic/tclIO.h: (line 139f) struct Channel, added a buffer queue,
+	to hold data pushed back when stacking a transformation.
 
 	* generic/tclIO.c:
-	  (line 91f, line 7434f) New internal function 'CopyBuffer'.
-	  Derived from 'CopyAndTranslateBuffer', with translation
-	  removed.
-	  (line 1025f, line 1212f): Initialization of new queue.
-	  (line 1164f, Tcl_StackChannel): Pushback of input queue.
-	  (line 1293f, Tcl_UnstackChannel): Discard input and pushback.
-	  (line 3748f, Tcl_ReadRaw): Modified to use data in the push back
-	  area before going to the driver. Uses 'CopyBuffer', s.a.
-	  (line 4702f, GetInput): Modified to use data in the push back
-	  area before going to the driver.
- 	  (line 4867f, Tcl_Seek): Modified to take pushback of the topmost
-	  channel in a stack into account.
-	  (line 5620f, Tcl_InputBuffered): See above. Added
-	  'Tcl_ChannelBuffered'. Analogue to 'Tcl_InputBuffered' but for
-	  the buffer area in the channel.
+	(line 91f, line 7434f) New internal function 'CopyBuffer'.  Derived
+	from 'CopyAndTranslateBuffer', with translation removed.
+	(line 1025f, line 1212f): Initialization of new queue.
+	(line 1164f, Tcl_StackChannel): Pushback of input queue.
+	(line 1293f, Tcl_UnstackChannel): Discard input and pushback.
+	(line 3748f, Tcl_ReadRaw): Modified to use data in the push back area
+	before going to the driver. Uses 'CopyBuffer', s.a.
+	(line 4702f, GetInput): Modified to use data in the push back area
+	before going to the driver.
+ 	(line 4867f, Tcl_Seek): Modified to take pushback of the topmost
+	channel in a stack into account.
+	(line 5620f, Tcl_InputBuffered): See above. Added
+	'Tcl_ChannelBuffered'. Analog to 'Tcl_InputBuffered' but for the
+	buffer area in the channel.
 
 	* generic/tcl.decls: New public API 'Tcl_ChannelBuffered'. S.a.
 
@@ -541,21 +530,21 @@
 	* generic/tclIntDecls.h:
 	* generic/tclInt.decls: commented out internal decls for
 	TclTestChannelCmd and TclTestChannelEventCmd as they were moved to
-	tclTest.c.  Added new decls for TclChannelEventScriptInvoker and
+	tclTest.c. Added new decls for TclChannelEventScriptInvoker and
 	TclChannelTransform.
 
 	* generic/tclIO.c (CloseChannel): stopped masking out of the
-	TCL_READABLE|TCL_WRITABLE bits from the state flags in
-	CloseChannel, instead adding extra intelligence to
-	CheckChannelErrors with a new CHANNEL_RAW_MODE bit for special
-	behavior when called from Raw channel APIs.
+	TCL_READABLE|TCL_WRITABLE bits from the state flags in CloseChannel,
+	instead adding extra intelligence to CheckChannelErrors with a new
+	CHANNEL_RAW_MODE bit for special behavior when called from Raw channel
+	APIs.
 
 2000-07-13  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclIO.c (StackSetBlockMode): moved set of chanPtr
-	outside of blockModeProc check to avoid infinite loop when
-	blockModeProc was NULL (Kupries).  updated TransformSeekProc to
-	not call Tcl_Seek directly (Kupries).
+	* generic/tclIO.c (StackSetBlockMode): moved set of chanPtr outside of
+	blockModeProc check to avoid infinite loop when blockModeProc was
+	NULL. Updated TransformSeekProc to not call Tcl_Seek directly
+	(Kupries).
 
 	* win/tclWinChan.c: updated fileChannelType to v2 channel struct
 	* win/tclWinConsole.c: updated consoleChannelType to v2 channel struct
@@ -565,85 +554,82 @@
 
 2000-07-11  Brent Welch	<welch@ajubasolutions.com>
 
-	* win/tclConfig.sh.in (TCL_LIBS): Cleaned up unix-specific
-	autoconf variables.
+	* win/tclConfig.sh.in (TCL_LIBS): Cleaned up unix-specific autoconf
+	variables.
 
 2000-07-11  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* tests/iogt.test: made tests [345].0 not run by default as they
-	were failing in the new design, but I'm not convinced that the
-	returned result isn't correct.
+	* tests/iogt.test: made tests [345].0 not run by default as they were
+	failing in the new design, but I'm not convinced that the returned
+	result isn't correct.
 
 	* generic/tclDecls.h:
 	* generic/tclStubInit.c:
-	* generic/tcl.decls: added Tcl_GetTopChannel C API that returns
-	the current top channel of a channel stack.  Tcl_GetChannel was
-	changed earlier to return the bottommost channel of a stack
-	because that is the one that is guaranteed to stay around the
-	longest, and this was needed to compensate for certain
-	operations that want to look at the state of the main channel.
-	Most channel APIs already compensate for grabbing the top, so it
-	shouldn't be needed often.
+	* generic/tcl.decls: added Tcl_GetTopChannel C API that returns the
+	current top channel of a channel stack. Tcl_GetChannel was changed
+	earlier to return the bottommost channel of a stack because that is
+	the one that is guaranteed to stay around the longest, and this was
+	needed to compensate for certain operations that want to look at the
+	state of the main channel. Most channel APIs already compensate for
+	grabbing the top, so it shouldn't be needed often.
 
 	* generic/tclIO.c (Tcl_StackChannel, Tcl_UnstackChannel): Added
-	flushing of buffers (Kupries), removed use of DownChannel macro,
-	added Tcl_GetTopChannel public API to get to the top channel of
-	the channel stack (necessary for TLS).  Rewrote Tcl_NotifyChannel
-	for new channel design (Kupries).  Did some code cleanup in the
-	transform code.  tclIO.c must still be broken into bits (separate
-	out test code and giot code, create tclIO.h).
+	flushing of buffers (Kupries), removed use of DownChannel macro, added
+	Tcl_GetTopChannel public API to get to the top channel of the channel
+	stack (necessary for TLS). Rewrote Tcl_NotifyChannel for new channel
+	design (Kupries). Did some code cleanup in the transform code.
+	tclIO.c must still be broken into bits (separate out test code and
+	giot code, create tclIO.h).
 
 2000-07-10  Andreas Kupries <a.kupries@westend.com>
 
 	* tests/iogt.test: Reverted some earlier changes as a fix by Jeff
-	  revived the original and correct behaviour. IOW, the tests showed
-	  a genuine error and I didn't see it :(.
+	revived the original and correct behaviour. IOW, the tests showed a
+	genuine error and I didn't see it :(.
 
-	* generic/tclIO.c (Tcl_Read|Write_Raw): Changed to directly use
- 	  the drivers and not DoRead|DoWrite. The latter use the buffering
- 	  system, encoding and eol-translation and this wreaks havoc with
- 	  the data going through the transformations. Both procedures use
- 	  CheckForchannelErrors and let it believe that there is no
- 	  background copy in progress or else stacked channels could not
-	  be used for that.
+	* generic/tclIO.c (Tcl_Read|Write_Raw): Changed to directly use the
+	drivers and not DoRead|DoWrite. The latter use the buffering system,
+	encoding and eol-translation and this wreaks havoc with the data going
+	through the transformations. Both procedures use CheckForchannelErrors
+	and let it believe that there is no background copy in progress or
+	else stacked channels could not be used for that.
 
 	* generic/tclIO.c (TclCopyChannel, CopyData): Moved access to the
- 	  topmost channel from the first to the second procedure to make
- 	  the decision about that at the last possible time (Callbacks can
- 	  change the stacking).
+	topmost channel from the first to the second procedure to make the
+	decision about that at the last possible time (Callbacks can change
+	the stacking).
 
 	test suite: failures of iogt-[345].0
-	
+
 2000-07-06  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* tests/iogt.test: new tests for stacked channel stuff based off
-	new 'testchannel transform|unstack' code (Kupries IOGT extension).
+	* tests/iogt.test: new tests for stacked channel stuff based off new
+	'testchannel transform|unstack' code (Kupries IOGT extension).
 	* generic/tcl.decls:
 	* generic/tcl.h:
 	* generic/tclDecls.h:
 	* generic/tclStubsInit.c:
-	* generic/tclIO.c: complete rewrite of Tcl Channel code for
-	stacked channels.  Channels are now designed to work in a more
-	stacked fashion with a shared ChannelState data structure.
+	* generic/tclIO.c: complete rewrite of Tcl Channel code for stacked
+	channels. Channels are now designed to work in a more stacked fashion
+	with a shared ChannelState data structure.
 
 2000-06-02  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* generic/tclIO.c (CloseChannel): removed the &ing out of
-	(TCL_READABLE|TCL_WRITABLE) from the flags, as CloseChannel does
-	this on the next pass through for the top channel, and it appeared
-	to be causing hangs by not allowing the final flush.
+	(TCL_READABLE|TCL_WRITABLE) from the flags, as CloseChannel does this
+	on the next pass through for the top channel, and it appeared to be
+	causing hangs by not allowing the final flush.
 
 2000-06-01  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclIO.c (CloseChannel): Rewrote CloseChannel code to
-	unstack a channel during the close process.  Fixed a refcount bug
-	in Tcl_UnstackChannel.  [Bug: 5623]
-	(CloseChannel): further extended CloseChannel in the stacked case
-	to effect certain operations on the next channel that would have
-	been done in Tcl_Close.  Also added CHANNEL_CLOSED and removed
-	(TCL_READABLE|TCL_WRITABLE) bits from chanPtr->flags.  Changed
-	final reset of the WatchProc to check the chanDownPtr's (next)
-	interestMask.
+	* generic/tclIO.c (CloseChannel): Rewrote CloseChannel code to unstack
+	a channel during the close process. Fixed a refcount bug in
+	Tcl_UnstackChannel. [Bug: 5623]
+	(CloseChannel): further extended CloseChannel in the stacked case to
+	effect certain operations on the next channel that would have been
+	done in Tcl_Close.  Also added CHANNEL_CLOSED and removed
+	(TCL_READABLE|TCL_WRITABLE) bits from chanPtr->flags. Changed final
+	reset of the WatchProc to check the chanDownPtr's (next) interestMask.
 
 	******************************************************
 	** END OF ASYNCHRONOUS UP-PORT LOG (8.3.2 -> 8.4a2) **
@@ -651,49 +637,46 @@
 
 2000-09-20  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* tests/socket.test: removed doTestsWithRemoteServer constraint
-	from socket-12.*.  It requires 'exec', not a remote server.
-	Cleaned up some coding errors.
+	* tests/socket.test: removed doTestsWithRemoteServer constraint from
+	socket-12.*. It requires 'exec', not a remote server. Cleaned up some
+	coding errors.
 
 2000-09-20  Jennifer Hom  <jenn@ajubasolutions.com>
 
 	* library/tcltest1.0/pkgIndex.tcl: Updated to load tcltest 2.0.
-	* library/tcltest1.0/tcltest2.tcl: New version of tcltest.  
-	Cleanup of command line parsing: allows users to specify command
-	line arguments through an environment variable named
-	TCLTEST_OPTIONS [RFE: 3748], does not respond to incorrect
-	arguments, and forces usage of entire flag name when using command
-	line arguments.  Defines accessor procs for all tcltest
-	variables.  Allows users to use 'return' in test scripts. Allow
-	users to specify whether test files should be sourced or run in a
-	separate process.  'all.tcl' code moved to tcltest package.
-	'test' proc modified to use attribute-value pairs.  Allow users to
+	* library/tcltest1.0/tcltest2.tcl: New version of tcltest.
+	Cleanup of command line parsing: allows users to specify command line
+	arguments through an environment variable named TCLTEST_OPTIONS [RFE:
+	3748], does not respond to incorrect arguments, and forces usage of
+	entire flag name when using command line arguments. Defines accessor
+	procs for all tcltest variables. Allows users to use 'return' in test
+	scripts. Allow users to specify whether test files should be sourced
+	or run in a separate process. 'all.tcl' code moved to tcltest package.
+	'test' proc modified to use attribute-value pairs. Allow users to
 	specify what return codes, output, and errors can be compared and
-	whether these values should be compared using regexp, glob, or
-	exact matching.  makeDirectory & removeDirectory now operate with
-	respect to temporaryDirectory [Bug: 6001].  Test results from
-	tests run in slave interpreters are now included in test totals
-	[Bug: 1493].  Test files that return error values are now reported.
-	
-	* tests/all.tcl: Added code to check for the tcltest version
-	loaded; modified to figure out which tests to run based on the
-	tcltest version loaded.
+	whether these values should be compared using regexp, glob, or exact
+	matching. makeDirectory & removeDirectory now operate with respect to
+	temporaryDirectory [Bug: 6001]. Test results from tests run in slave
+	interpreters are now included in test totals [Bug: 1493]. Test files
+	that return error values are now reported.
+	* tests/all.tcl: Added code to check for the tcltest version loaded;
+	modified to figure out which tests to run based on the tcltest version
+	loaded.
 	* tests/tcltest.test: Modified to explicitly load version 1.0 of
 	tcltest.
-	* tests/tcltest2.test: New test suite for tcltest; includes all of
-	the old tests plus new ones reflecting changes made for version
-	2.0.
-	* tests/cmdAH.test: Added singleTestInterp constraint to
-	cmdAH-31.2; this test does not run if tests aren't sourced into a
-	single interpreter.
-	* tests/socket.test: Fixed two tests that were referencing
-	variables outside of scope.
-	
+	* tests/tcltest2.test: New test suite for tcltest; includes all of the
+	old tests plus new ones reflecting changes made for version 2.0.
+	* tests/cmdAH.test: Added singleTestInterp constraint to cmdAH-31.2;
+	this test does not run if tests aren't sourced into a single
+	interpreter.
+	* tests/socket.test: Fixed two tests that were referencing variables
+	outside of scope.
+
 	* tools/tcl.wse.in: Added code to install tcltest2.tcl.
 
-	* doc/tcltest2.n: New documentation for tcltest version 2.0.
-	Removes documentation for tcltest namespace variables.  Adds
-	documentation for new tcltest procs.
+	* doc/tcltest2.n: New documentation for tcltest version 2.0. Removes
+	documentation for tcltest namespace variables. Adds documentation for
+	new tcltest procs.
 
 	* unix/mkLinks: Added code to link to tcltest2.n.
 
@@ -702,15 +685,15 @@
 
 2000-09-19  Eric Melski  <ericm@ajubasolutions.com>
 
-	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): When using -all, all
-	attempts after the first to match the regexp against the string
-	should include the TCL_REG_NOTBOL flag, to avoid erroneously
-	matching ^ in the middle of the string.  Added code to set this
-	flag after the first pass through the matching loop. [Bug: 6284].
+	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): When using -all, all attempts
+	after the first to match the regexp against the string should include
+	the TCL_REG_NOTBOL flag, to avoid erroneously matching ^ in the middle
+	of the string. Added code to set this flag after the first pass
+	through the matching loop. [Bug: 6284].
 
 2000-09-19  David Gravereaux  <davygrvy@ajubasolutions.com>
 
-	* doc/Eval.3:  Added a note about the script argument to Tcl_Eval()
+	* doc/Eval.3: Added a note about the script argument to Tcl_Eval()
 	should be in UTF-8 or risk implied conversion errors when possible
 	combinations of upper ascii can be valid UTF-8 special codes.
 
@@ -726,24 +709,24 @@
 	* doc/Alloc.3: Added entries for Tcl_AttemptAlloc, Tcl_AttempRealloc.
 
 	* doc/StringObj.3: Added entry for Tcl_AttemptSetObjLength.
-	
+
 	* generic/tclDecls.h:
 	* generic/tclStubInit.c: Regen'ed stubs files from new tcl.decls.
 
 	* generic/tcl.decls: Added stubs for the Tcl_Attempt* memory
 	allocators and for Tcl_AttemptSetObjLength.
 
-	* generic/tcl.h: Added #define's for attemptckalloc,
-	attemptckrealloc, which map to the Tcl_Attempt* memory allocators.
+	* generic/tcl.h: Added #define's for attemptckalloc, attemptckrealloc,
+	which map to the Tcl_Attempt* memory allocators.
 
 	* generic/tclCkalloc.c: Added non-panic'ing versions of Tcl_Alloc,
 	Tcl_Realloc, etc.; these are called Tcl_AttemptAlloc,
-	Tcl_AttemptRealloc, etc.  These are used by
-	Tcl_AttemptSetObjLength and the string obj append functions.
+	Tcl_AttemptRealloc, etc. These are used by Tcl_AttemptSetObjLength and
+	the string obj append functions.
 
 	* generic/tclStringObj.c: Modified string growth algorithm to use
-	doubling algorithm as long as possible, and only fall back when
-	that fails.  Added Tcl_AttemptSetObjLength, and modified
+	doubling algorithm as long as possible, and only fall back when that
+	fails. Added Tcl_AttemptSetObjLength, and modified
 	AppendUnicodeToUnicodeRep, AppendUtfToUtfRep, and
 	Tcl_AppendStringsToObjVA to support this.
 
@@ -753,17 +736,17 @@
 	project conversion backups.
 
 	* win/tclWinPipe.c: Stage-1 bug fix for TR#2460 "exec leaks memory".
-	Added more logic around the close-down of the pipe reader thread so
-	as to avoid, at all cost, a TerminateThread.  Most cases with exec
-	are fixed, but I don't consider 2460 done yet.  Closing down the
-	read side of a pipe before the child process, doesn't really fit
-	the windows model.  [BUG: 2460]
+	Added more logic around the close-down of the pipe reader thread so as
+	to avoid, at all cost, a TerminateThread. Most cases with exec are
+	fixed, but I don't consider 2460 done yet. Closing down the read side
+	of a pipe before the child process, doesn't really fit the windows
+	model. [BUG: 2460]
 
 2000-09-07  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* doc/trace.n: minor doc cleanup
 
-2000-09-06  André Pönitz <poenitz@htwm.de>
+2000-09-06  André Pönitz <poenitz@htwm.de>
 
 	* doc/*.n: added or changed "SEE ALSO:" section
 
@@ -771,14 +754,14 @@
 
 	* win/tclWinLoad.c (TclpLoadFile): added special message for
 	ERROR_PROC_NOT_FOUND exception in loading a dll.
-	* win/tclWinError.c: changed ERROR_PROC_NOT_FOUND to map from
-	ESRCH (POSIX: no such process) to EINVAL because there is no good
-	mapping for "procedure not found".
+	* win/tclWinError.c: changed ERROR_PROC_NOT_FOUND to map from ESRCH
+	(POSIX: no such process) to EINVAL because there is no good mapping
+	for "procedure not found".
 
 	* README:
 	* generic/tcl.h:
 	* library/tcltest1.0/tcltest.tcl:
-	* tools/tcl.wse.in: 
+	* tools/tcl.wse.in:
 	* tools/tcltk-man2html.tcl:
 	* unix/configure.in:
 	* unix/tcl.spec:
@@ -795,8 +778,8 @@
 	appends.
 
 	* doc/source.n:
-	* doc/Eval.3: added extra note about how to safe use ^Z in code,
-	as it is now a cross-platform (was just Windows) EOF char.
+	* doc/Eval.3: added extra note about how to safe use ^Z in code, as it
+	is now a cross-platform (was just Windows) EOF char.
 
 2000-09-05  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -810,26 +793,26 @@
 
 2000-08-29  Eric Melski  <ericm@ajubasolutions.com>
 
-	* generic/tclStringObj.c: Applied patch from Gerhard Hintermayer
-	to provide a more conservative string growth algorithm for strings
-	larger than one megabyte; this allows more efficient use of memory
-	for very large strings.
+	* generic/tclStringObj.c: Applied patch from Gerhard Hintermayer to
+	provide a more conservative string growth algorithm for strings larger
+	than one megabyte; this allows more efficient use of memory for very
+	large strings.
 
 2000-08-25  Eric Melski  <ericm@ajubasolutions.com>
 
 	* tests/trace.test: Extended array tracing tests.
 
-	* doc/trace.n: Clarified information about when array traces will
-	be fired.
+	* doc/trace.n: Clarified information about when array traces will be
+	fired.
 
 	* generic/tclVar.c (Tcl_ArrayObjCmd): Corrected call to CallTraces
-	(for TCL_TRACE_ARRAY) to only be called when the variable is
-	either an array or is undefined, to ensure that array traces do
-	not fire for scalar variables.
+	(for TCL_TRACE_ARRAY) to only be called when the variable is either an
+	array or is undefined, to ensure that array traces do not fire for
+	scalar variables.
 
 2000-08-24  Eric Melski  <ericm@ajubasolutions.com>
-	
-	* doc/man.macros: Tweaked tab settings for .SO (Standard Options) 
+
+	* doc/man.macros: Tweaked tab settings for .SO (Standard Options)
 	sections, based on suggestion from Peter Spjuth.
 
 2000-08-24  Mo DeJong  <mdejong@redhat.com>
@@ -838,23 +821,22 @@
 	* unix/configure.in:
 	* unix/tcl.m4 (SC_ENABLE_GCC): Remove --enable-gcc option.
 	* win/README: Add note about building with Cygwin.
-	* win/configure.in: 
-	* win/tcl.m4 (SC_ENABLE_GCC): Remove --enable-gcc option.
-	Remove quick hack that provided cross compile support for
-	windows builds.
+	* win/configure.in:
+	* win/tcl.m4 (SC_ENABLE_GCC): Remove --enable-gcc option. Remove quick
+	hack that provided cross compile support for windows builds.
 
 2000-08-24  Eric Melski  <ericm@ajubasolutions.com>
 
-	Overall change:  Added support for command rename/delete traces
-	and new trace syntax, from patch from Vince Darley.  Added support
-	for array traces for variables.  [RFE: 5048, 5967].
+	Overall change: Added support for command rename/delete traces and new
+	trace syntax, from patch from Vince Darley. Added support for array
+	traces for variables. [RFE: 5048, 5967].
 
 	* doc/trace.n: Updated documentation for new syntax; flagged old
-	syntax as deprecated; added documentation for command
-	rename/delete traces and variable array traces.
+	syntax as deprecated; added documentation for command rename/delete
+	traces and variable array traces.
 
-	* tests/trace.test: Updated tests for new trace syntax; new tests
-	for command rename/delete traces; new tests for array traces.
+	* tests/trace.test: Updated tests for new trace syntax; new tests for
+	command rename/delete traces; new tests for array traces.
 
 	* generic/tclVar.c: Support for new trace syntax; support for
 	TCL_TRACE_ARRAY.
@@ -863,17 +845,17 @@
 	* generic/tclDecls.h:
 	* generic/tcl.decls: Stub functions for command rename/delete traces.
 
-	* generic/tcl.h: 
+	* generic/tcl.h:
 	* generic/tclInt.h:
 	* generic/tclBasic.c: Support for command traces.
 
-	* generic/tclCmdMZ.c (TclTraceVariableObjCmd): Patched to support
-	new [trace] syntax:  
+	* generic/tclCmdMZ.c (TclTraceVariableObjCmd): Patched to support new
+	[trace] syntax:
 	trace {add|remove|list} {variable|command} name ops command
 	Added support for command traces (rename, delete operations).
-	Added support for TCL_TRACE_ARRAY at Tcl level (array operation
-	for variable traces).
-	
+	Added support for TCL_TRACE_ARRAY at Tcl level (array operation for
+	variable traces).
+
 2000-08-20  Eric Melski  <ericm@ajubasolutions.com>
 
 	* generic/tclVar.c: Added check for non-arrays for [array statistics]
@@ -885,11 +867,11 @@
 	tclPlatDecls.h can't be parsed due to a missing definition of TCHAR.
 	Added a check to include it when not defined.
 
-	***POSSIBLE OBSCURE BUG*** could be caused when the compile flags
-	for the core happen to be different than a project who uses these
-	publics regarding -D_MBCS and -D_UNICODE.  This added check might
-	have to be revisited later with a better understanding of the
-	reprocusions.  I think TCHAR should be replaced with it's expansion.
+	***POSSIBLE OBSCURE BUG*** could be caused when the compile flags for
+	the core happen to be different than a project who uses these publics
+	regarding -D_MBCS and -D_UNICODE. This added check might have to be
+	revisited later with a better understanding of the reprocusions. I
+	think TCHAR should be replaced with it's expansion.
 
 2000-08-18  David Gravereaux <davygrvy@ajubasolutions.com>
 
@@ -899,13 +881,13 @@
 2000-08-15  Eric Melski  <ericm@ajubasolutions.com>
 
 	* library/tcltest1.0/tcltest.tcl: Set debug level in
-	tcltest::restoreState to 2, for consistancy with the debug level
-	in tcltest::saveState [Bug: 4505].
+	tcltest::restoreState to 2, for consistancy with the debug level in
+	tcltest::saveState [Bug: 4505].
 
 2000-08-14  Eric Melski  <ericm@ajubasolutions.com>
 
-	* win/makefile.vc: 
-	* win/Makefile.in: 
+	* win/makefile.vc:
+	* win/Makefile.in:
 	* unix/Makefile.in: Added tclPlatDecls.h to the list of installed
 	headers, for more complete stubs support. [Bug: 5241].
 
@@ -913,47 +895,44 @@
 	platform-specific stubs declarations (Tcl_WinTCharToUtf, etc)
 	[Bug: 5241].
 
-	* README: Updated link for instructions on compiling Tcl from
-	sources to point to correct location
-	(http://dev.scriptics.com/doc/... instead of
-	http://dev.scriptics.com/support/...).
+	* README: Updated link for instructions on compiling Tcl from sources
+	to point to correct location (http://dev.scriptics.com/doc/... instead
+	of http://dev.scriptics.com/support/...).
 
 2000-08-11  Eric Melski  <ericm@ajubasolutions.com>
 
 	* generic/tclEnv.c (TclUnsetEnv): Changed declaration of length
-	variable from "unsigned int" to "int", to match usage when passed
-	to TclpFindVariable [Bug: 6126].
+	variable from "unsigned int" to "int", to match usage when passed to
+	TclpFindVariable [Bug: 6126].
 
 2000-08-10  Eric Melski  <ericm@ajubasolutions.com>
 
-	* library/msgcat1.0/pkgIndex.tcl: Bumped version number to 1.2
-	[Bug: 6100].
+	* library/msgcat1.0/pkgIndex.tcl: Bumped version number to 1.2 [Bug:
+	6100].
 
-	* library/msgcat1.0/msgcat.tcl: Removed erroneous [package forget]
-	in msgcat namespace initializer.  Bumped version number to 1.2
-	[Bug: 6100].
+	* library/msgcat1.0/msgcat.tcl: Removed erroneous [package forget] in
+	msgcat namespace initializer. Bumped version number to 1.2 [Bug: 6100]
 
 2000-08-10  David Gravereaux <davygrvy@ajubasolutions.com>
 
-	* generic/tclObj.c: r1.15 accidentally changed a global mutex
-	name tclObjMutex to ObjMutex.  Put the correct name back.
+	* generic/tclObj.c: r1.15 accidentally changed a global mutex name
+	tclObjMutex to ObjMutex.  Put the correct name back.
 
 2000-08-07  Eric Melski  <ericm@ajubasolutions.com>
 
 	* tests/indexObj.test: Added tests using the [testwrongnumargs]
 	command to test Tcl_WrongNumArgs.
 
-	* generic/tclTest.c (TestWrongNumArgsObjCmd): Added test function
-	for the Tcl_WrongNumArgs function.
+	* generic/tclTest.c (TestWrongNumArgsObjCmd): Added test function for
+	the Tcl_WrongNumArgs function.
 
-	* generic/tclIndexObj.c (Tcl_WrongNumArgs): Corrected algorithm to
-	not insert a space before the message component when objc == 0
-	[Bug: 6078].
+	* generic/tclIndexObj.c (Tcl_WrongNumArgs): Corrected algorithm to not
+	insert a space before the message component when objc == 0 [Bug: 6078]
 
 2000-07-27  Mo DeJong  <mdejong@redhat.com>
 
-	* win/configure.in: TCL_STUB_LIB_FLAG should not
-	include ${TCL_DBGX} in win/tclConfig.sh, fix that.
+	* win/configure.in: TCL_STUB_LIB_FLAG should not include ${TCL_DBGX}
+	in win/tclConfig.sh, fix that.
 
 2000-07-25  David Gravereaux  <davygrvy@ajubasolutions.com>
 
@@ -965,30 +944,30 @@
 	* generic/tclTest.c:
 	* mac/tclMacPort.h:
 	* unix/tclUnixPort.h:
-	* win/tclWinInit.c:  Thread-safe rewrite for tclAsync.c.  Added
-	notifier alerting on all platforms as it was only working on Win
-	before.  Removed older Win hacks that would end-up waking the
-	wrong notifier in the presence of a threaded build.  All tests
-	pass as before.  New test cases will be added soon for the new
-	behavior.  [BUG: 5791]
+	* win/tclWinInit.c: Thread-safe rewrite for tclAsync.c. Added notifier
+	alerting on all platforms as it was only working on Win before.
+	Removed older Win hacks that would end-up waking the wrong notifier in
+	the presence of a threaded build. All tests pass as before. New test
+	cases will be added soon for the new behavior. [BUG: 5791]
 
 2000-07-25  Eric Melski  <ericm@ajubasolutions.com>
 
-	* generic/tclVar.c (CallTraces): Added check for VAR_TRACE_ACTIVE
-	on the array containing the variable before executing traces on
-	that array, to conform with normal variable traces and the
-	documentation, which states that while executing a trace, other
-	traces on that variable are disabled. [Bug: 6049].
+	* generic/tclVar.c (CallTraces): Added check for VAR_TRACE_ACTIVE on
+	the array containing the variable before executing traces on that
+	array, to conform with normal variable traces and the documentation,
+	which states that while executing a trace, other traces on that
+	variable are disabled. [Bug: 6049].
 
-	* win/tclWinPipe.c (BuildCommandLine): Added Tcl_DStringFree call
-	to prevent potential memory leaks [Bug: 6041].
+	* win/tclWinPipe.c (BuildCommandLine): Added Tcl_DStringFree call to
+	prevent potential memory leaks [Bug: 6041].
 
 2000-07-24  Eric Melski  <ericm@ajubasolutions.com>
 
-	* doc/msgcat.n: Added documentation about the selection of the
-	default locale on Windows.
+	* doc/msgcat.n: Added documentation about the selection of the default
+	locale on Windows.
 
 2000-07-23  Joe English  <jenglish@flightlab.com>
+
 	* doc/AddErrInfo.3:
 	* doc/ChnlStack.3:
 	* doc/Exit.3:
@@ -1006,13 +985,13 @@
 
 2000-07-21  Eric Melski  <ericm@ajubasolutions.com>
 
-	* generic/tclStubInit.c: 
-	* generic/tclObj.c: 
-	* generic/tclInt.h: 
-	* generic/tclHash.c: 
-	* generic/tclDecls.h: 
-	* generic/tcl.h: 
-	* generic/tcl.decls: 
+	* generic/tclStubInit.c:
+	* generic/tclObj.c:
+	* generic/tclInt.h:
+	* generic/tclHash.c:
+	* generic/tclDecls.h:
+	* generic/tcl.h:
+	* generic/tcl.decls:
 	* doc/Hash.3: Reapplied patch from Paul Duffin to extend hash tables
 	to allow custom key types, such as Tcl_Obj *'s, and others.
 
@@ -1022,41 +1001,41 @@
 2000-07-21  Mo DeJong  <mdejong@redhat.com>
 
 	* win/configure.in: Define ${prefix} and ${exec_prefix} like
-	unix/configure.in.  Fix or add TCL_SRC_DIR, TCL_STUB_LIB_FILE,
+	unix/configure.in. Fix or add TCL_SRC_DIR, TCL_STUB_LIB_FILE,
 	TCL_STUB_LIB_FLAG, TCL_BUILD_STUB_LIB_SPEC, TCL_STUB_LIB_SPEC,
 	TCL_BUILD_STUB_LIB_PATH, TCL_STUB_LIB_PATH.
 
 2000-07-20  Eric Melski  <ericm@ajubasolutions.com>
 
-	* generic/tclStubInit.c: 
-	* generic/tclObj.c: 
-	* generic/tclInt.h: 
-	* generic/tclHash.c: 
-	* generic/tclDecls.h: 
-	* generic/tcl.h: 
-	* generic/tcl.decls: 
-	* doc/Hash.3: Reverted patch from Paul Duffin to extend hash tables
-	to allow custom key types, such as Tcl_Obj *'s, and others; it
-	seems to break Tk.
+	* generic/tclStubInit.c:
+	* generic/tclObj.c:
+	* generic/tclInt.h:
+	* generic/tclHash.c:
+	* generic/tclDecls.h:
+	* generic/tcl.h:
+	* generic/tcl.decls:
+	* doc/Hash.3: Reverted patch from Paul Duffin to extend hash tables to
+	allow custom key types, such as Tcl_Obj *'s, and others; it seems to
+	break Tk.
 
 2000-07-19  Eric Melski  <ericm@ajubasolutions.com>
 
-	* generic/tclStubInit.c: 
-	* generic/tclObj.c: 
-	* generic/tclInt.h: 
-	* generic/tclHash.c: 
-	* generic/tclDecls.h: 
-	* generic/tcl.h: 
-	* generic/tcl.decls: 
-	* doc/Hash.3: Applied patch from Paul Duffin to extend hash tables
-	to allow custom key types, such as Tcl_Obj *'s, and others.
+	* generic/tclStubInit.c:
+	* generic/tclObj.c:
+	* generic/tclInt.h:
+	* generic/tclHash.c:
+	* generic/tclDecls.h:
+	* generic/tcl.h:
+	* generic/tcl.decls:
+	* doc/Hash.3: Applied patch from Paul Duffin to extend hash tables to
+	allow custom key types, such as Tcl_Obj *'s, and others.
 
 	* tests/pkgMkIndex.test: Added tests for pkg_compareExtension.
 
-	* library/package.tcl: Enhanced pkg_compareExtension to handle
-	Unixes which tack the version number on to the end of library
-	names (eg, foo.so.1.2); such filenames will be correctly matched.
-	(Patch from Vince Darley).
+	* library/package.tcl: Enhanced pkg_compareExtension to handle Unixes
+	which tack the version number on to the end of library names (eg,
+	foo.so.1.2); such filenames will be correctly matched. (Patch from
+	Vince Darley).
 
 	* win/makefile.vc: Applied patch from Don Porter to provide better
 	nmake support for NT/Alpha [RFE: 5938].
@@ -1065,52 +1044,49 @@
 
 	* unix/configure.in:
 	* unix/tcl.m4:
-	* win/tcl.m4: Properly quote arguments to m4 macros. This allows
-	Tcl to work with the new version of autoconf.
+	* win/tcl.m4: Properly quote arguments to m4 macros. This allows Tcl
+	to work with the new version of autoconf.
 
 2000-07-18  Eric Melski  <ericm@ajubasolutions.com>
 
 	* tests/opt.test: Removed references to Lfirst, Lrest functions.
 
-	* library/opt0.4/optparse.tcl: Applied patch from Chris Nelson,
-	which replaces the [Lfirst] function with an inline [lindex ... 0]
-	and [Lrest] with [lrange ... 1 end], for better performance. 
-	[RFE: 6019]
-	
+	* library/opt0.4/optparse.tcl: Applied patch from Chris Nelson, which
+	replaces the [Lfirst] function with an inline [lindex ... 0] and
+	[Lrest] with [lrange ... 1 end], for better performance. [RFE: 6019]
 
 2000-07-18  Eric Melski  <ericm@scriptics.com>
 
-	* compat/string.h: Fixed function prototypes for strpbrk and
-	strtok [Bug: 6020].
+	* compat/string.h: Fixed function prototypes for strpbrk and strtok
+	[Bug: 6020].
 
 2000-07-17  David Gravereaux  <davygrvy@ajubasolutions.com>
 
-	* win/tclWinChan.c: Win2K OS bug with
-	GetStdHandle(STD_OUTPUT_HANDLE)	giving the wrong answer.  This
-	made TclpGetDefaultStdChannel grab what it thought was a valid
-	native stdout handle.  Added a new WriteFile() test to	make sure
-	it's really valid.  This OS bug doesn't affect the shells.  Only
-	-subsystem:windows (aka WinMain) application that dynamically
-	load tclXX.dll [BUG: 5971]
+	* win/tclWinChan.c: Win2K OS bug with GetStdHandle(STD_OUTPUT_HANDLE)
+	giving the wrong answer. This made TclpGetDefaultStdChannel grab what
+	it thought was a valid native stdout handle. Added a new WriteFile()
+	test to make sure it's really valid. This OS bug doesn't affect the
+	shells. Only -subsystem:windows (aka WinMain) application that
+	dynamically load tclXX.dll [BUG: 5971]
 
 2000-07-17  Eric Melski  <ericm@scriptics.com>
 
-	* library/msgcat1.0/msgcat.tcl: 
-	* doc/msgcat.n: 
-	* tests/msgcat.test: Applied patches from Chris Nelson, to provide
-	the mcmset function, which allows the translator to set multiple
-	string translations in a single function call, rather than
-	requiring many calls to mcset. [RFE: 6000, 5993].  In addition,
-	these patches correct mcload to use utf-8 encoding on when reading
-	message catalog files, and provides for better default behavior
-	for determining the locale on a Windows system.
+	* library/msgcat1.0/msgcat.tcl:
+	* doc/msgcat.n:
+	* tests/msgcat.test: Applied patches from Chris Nelson, to provide the
+	mcmset function, which allows the translator to set multiple string
+	translations in a single function call, rather than requiring many
+	calls to mcset. [RFE: 6000, 5993]. In addition, these patches correct
+	mcload to use utf-8 encoding on when reading message catalog files,
+	and provides for better default behavior for determining the locale on
+	a Windows system.
 
 2000-07-17  Mo DeJong  <mdejong@redhat.com>
 
-	* unix/tcl.m4 (SC_ENABLE_GCC): Don't set CC=gcc
-	before running AC_PROG_CC if CC is already set.
+	* unix/tcl.m4 (SC_ENABLE_GCC): Don't set CC=gcc before running
+	AC_PROG_CC if CC is already set.
 
-2000-07-13  André Pönitz <poenitz@mathematik.tu-chemnitz.de>
+2000-07-13  André Pönitz <poenitz@mathematik.tu-chemnitz.de>
 
 	* doc/lappend.n:
 	* doc/lindex.n:
@@ -1124,31 +1100,30 @@
 
 2000-07-07  Mo DeJong  <mdejong@redhat.com>
 
-	* win/configure.in: Fix definition of
-	TCL_SRC_DIR so that it matches the Unix version.
+	* win/configure.in: Fix definition of TCL_SRC_DIR so that it matches
+	the Unix version.
 	* win/tclConfig.sh.in: Removed duplicate variables.
 
 2000-07-06  Eric Melski  <ericm@scriptics.com>
 
-	* tests/msgcat.test: 
-	* library/msgcat1.0/msgcat.tcl: Applied patch from Christian
-	Krone, to provide extended args support for msgcat::unknown, which
-	is used for strings without a known translation in the current
-	locale [Bug: 5984].
+	* tests/msgcat.test:
+	* library/msgcat1.0/msgcat.tcl: Applied patch from Christian Krone, to
+	provide extended args support for msgcat::unknown, which is used for
+	strings without a known translation in the current locale [Bug: 5984].
 
 2000-06-29  Eric Melski  <ericm@scriptics.com>
 
 	* doc/msgcat.n: Doc's for mcmax function.
 
-	* library/msgcat1.0/msgcat.tcl: Applied patches from Laurent
-	Duperval, to add mcmax function, which computes the length of the
-	longest of several translated strings.  Bumped version number to 1.1.
+	* library/msgcat1.0/msgcat.tcl: Applied patches from Laurent Duperval,
+	to add mcmax function, which computes the length of the longest of
+	several translated strings. Bumped version number to 1.1.
 
 2000-06-27  Eric Melski  <ericm@scriptics.com>
 
-	* tests/stringObj.test: Tweaked tests to avoid hardcoded
-	high-ASCII characters (which will fail in multibyte locales);
-	instead used \uXXXX syntax. [Bug: 3842].
+	* tests/stringObj.test: Tweaked tests to avoid hardcoded high-ASCII
+	characters (which will fail in multibyte locales); instead used \uXXXX
+	syntax. [Bug: 3842].
 
 2000-06-26  Eric Melski  <ericm@scriptics.com>
 
@@ -1157,17 +1132,17 @@
 
 2000-06-23  Eric Melski  <ericm@scriptics.com>
 
-	* doc/Hash.3: Added documentation patch for Tcl_Obj *'s as keys in
-	Tcl hash tables [RFE: 5934].
+	* doc/Hash.3: Added documentation patch for Tcl_Obj *'s as keys in Tcl
+	hash tables [RFE: 5934].
 
-	* generic/tcl.h: 
-	* generic/tclHash.c: Applied patch from [RFE: 5934], which extends
-	Tcl hash tables to allow Tcl_Obj *'s as the key.
+	* generic/tcl.h:
+	* generic/tclHash.c: Applied patch from [RFE: 5934], which extends Tcl
+	hash tables to allow Tcl_Obj *'s as the key.
 
 2000-06-20  Eric Melski  <ericm@ajubasolutions.com>
 
 	* tests/opt.test:
-	* library/opt0.4/optparse.tcl: Applied patch from [Bug: 5922], which 
+	* library/opt0.4/optparse.tcl: Applied patch from [Bug: 5922], which
 	corrected an incorrect use of [string match].
 
 	* unix/tclConfig.sh.in:
@@ -1183,23 +1158,23 @@
 
 	* win/tcl.m4:
 	* win/configure.in:
-	* win/Makefile.in: Applied patch from [RFE: 5844], to extend
-	support for mingw compile environment on Windows.
+	* win/Makefile.in: Applied patch from [RFE: 5844], to extend support
+	for mingw compile environment on Windows.
 
 	* win/tclWinDde.c:
 	* win/tclWinInit.c:
 	* win/tclWinNotify.c:
 	* win/tclWinPipe.c:
 	* win/tclWinReg.c:
-	* win/tclWinThrd.c: Applied patch from [Bug: 5794], to fix
-	compiler warnings when using mingw on Windows.
+	* win/tclWinThrd.c: Applied patch from [Bug: 5794], to fix compiler
+	warnings when using mingw on Windows.
 
 2000-05-31  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* tests/set-old.test:
 	* doc/unset.n:
-	* generic/tclVar.c (Tcl_UnsetObjCmd): added -nocomplain and --
-	options to unset, to allow for a silent unset operation.
+	* generic/tclVar.c (Tcl_UnsetObjCmd): added -nocomplain and -- options
+	to unset, to allow for a silent unset operation.
 
 2000-05-31  Eric Melski  <ericm@scriptics.com>
 
@@ -1216,68 +1191,66 @@
 
 	8.4a1 RELEASE
 
-	* generic/tclExecute.c (TclExecuteByteCode INST_STR_CMP): added
-	test of iResult return from memcmp, as memcmp isn't required to
-	return only -1,0,1.
+	* generic/tclExecute.c (TclExecuteByteCode INST_STR_CMP): added test
+	of iResult return from memcmp, as memcmp isn't required to return only
+	-1,0,1.
 
 2000-06-03  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct): Corrected
-	caching of the index ptr to account for offsets != sizeof(char *).
-	[Bug: 5153]
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct): Corrected caching
+	of the index ptr to account for offsets != sizeof(char *). [Bug: 5153]
 
 2000-05-29  Sandeep Tamhankar <sandeep@scriptics.com>
 
 	* tests/http.test
 	* doc/http.n
-	* library/http2.3/http.tcl: Fixed bug 5741, where unsuccessful
-	geturl calls sometimes leaked memory and resources (sockets).  
-	Also, switched around some of the logic so that http::wait never 
-	throws an exception.  This is because in an asynchronous geturl, 
-	the command callback will probably end up doing all the error 
-	handling anyway, and in an asynchronous situation, the user
-	expects to check the state when the transaction completes, as
-	opposed to being thrown an exception.	For the http package, this
-	menas the user can check http::status for "error" and http::error
-	for the error message after doing the http::wait.
+	* library/http2.3/http.tcl: Fixed bug 5741, where unsuccessful geturl
+	calls sometimes leaked memory and resources (sockets). Also, switched
+	around some of the logic so that http::wait never throws an exception.
+	This is because in an asynchronous geturl, the command callback will
+	probably end up doing all the error handling anyway, and in an
+	asynchronous situation, the user expects to check the state when the
+	transaction completes, as opposed to being thrown an exception.	For
+	the http package, this menas the user can check http::status for
+	"error" and http::error for the error message after doing the
+	http::wait.
 
 2000-05-27  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* tests/info.test:
 	* doc/info.n:
 	* generic/tclIOUtil.c (Tcl_EvalFile):
-	* generic/tclCmdIL.c (InfoScriptCmd): added ability to set the
-	info script return value [info script ?newFileName?].  This will
-	be beneficial for virtual file system programs. [Bug: 4225]
+	* generic/tclCmdIL.c (InfoScriptCmd): added ability to set the info
+	script return value [info script ?newFileName?]. This will be
+	beneficial for virtual file system programs. [Bug: 4225]
 
 2000-05-26  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): reworked to operate in
 	Unicode, tweaked for performance.
 	(Tcl_StringObjCmd) changed STR_FIRST/STR_LAST error message to
-	something more understandable, reworked STR_FIRST, STR_LAST,
-	STR_MAP, STR_MATCH, STR_RANGE, STR_REPLACE to operate in Unicode.
-	Removed inneffectual STR_RANGE "special" ByteArray support.
-	Optimized STR_MAP algorithm, especially optimized for one-pair case.
-	Fixed possible mem overrun in STR_INDEX bytearray case.
-	
+	something more understandable, reworked STR_FIRST, STR_LAST, STR_MAP,
+	STR_MATCH, STR_RANGE, STR_REPLACE to operate in Unicode. Removed
+	inneffectual STR_RANGE "special" ByteArray support. Optimized STR_MAP
+	algorithm, especially optimized for one-pair case. Fixed possible mem
+	overrun in STR_INDEX bytearray case.
+
 	* generic/tclCompExpr.c: changed INST_STREQ -> INST_STR_EQ,
 	INST_STRNEQ -> INST_STR_NEQ
 	* generic/tclCompile.c: added streq, strneq, strcmp, strlen &
 	strmatch to the compiled stats instructionTable
 	* generic/tclCompile.h: added instructions INST_STR_CMP,
 	INST_STR_INDEX, INST_STR_MATCH
-	* generic/tclCompCmds.c: added byte compiler support for
-	[string compare|match|index].
-	* generic/tclExecute.c:
-	Changed INST_STR_(N)EQ to return an Int object and not bother
-	trying to reuse the top stack object.
-	Added INST_STR_CMP, INST_STR_INDEX, INST_STR_MATCH bytecode ops.
-	Extended evalstats output info with Tcl_IsShared stat info.
+	* generic/tclCompCmds.c: added byte compiler support for [string
+	compare|match|index].
+	* generic/tclExecute.c: Changed INST_STR_(N)EQ to return an Int object
+	and not bother trying to reuse the top stack object. Added
+	INST_STR_CMP, INST_STR_INDEX, INST_STR_MATCH bytecode ops. Extended
+	evalstats output info with Tcl_IsShared stat info.
 
 	* generic/tclInt.h:
-	* generic/tclObj.c (Tcl_DbIsShared): added support for checking
-	result of Tcl_IsShared in evalstats (TCL_COMPILE_STATS).
+	* generic/tclObj.c (Tcl_DbIsShared): added support for checking result
+	of Tcl_IsShared in evalstats (TCL_COMPILE_STATS).
 
 	* generic/tclStringObj.c (Tcl_AppendUnicodeToObj): removed dead code.
 	(AppendUnicodeToUnicodeRep) removed overallocation by extra
@@ -1289,31 +1262,30 @@
 
 2000-05-23  Eric Melski  <ericm@scriptics.com>
 
-	* generic/tclInt.h: Added function prototypes for
-	TclCompileStringCmd and TclCompileReturnCmd.
+	* generic/tclInt.h: Added function prototypes for TclCompileStringCmd
+	and TclCompileReturnCmd.
 
 	* generic/tclCompile.h: Added definition of INST_STRLEN opcode and
 	updated LAST_INST_OPCODE value.
 
-	* generic/tclBasic.c: Added information about TclCompileStringCmd
-	and TclCompileReturnCmd to BuiltInCmds table.
+	* generic/tclBasic.c: Added information about TclCompileStringCmd and
+	TclCompileReturnCmd to BuiltInCmds table.
 
 	* generic/tclExecute.c (TclExecuteByteCode): Added support for the
 	INST_STRLEN opcode.
 
-	* generic/tclCompCmds.c 
-	(TclCompileStringCmd): Basic implementation of byte-compiled
-	[string] command.  Not all subcommands are implemented; those
-	that are not an out-line compiled.
+	* generic/tclCompCmds.c (TclCompileStringCmd): Basic implementation of
+	byte-compiled [string] command. Not all subcommands are implemented;
+	those that are not an out-line compiled.
 
 	(TclCompileReturnCmd): Byte-compiled implementation of [return]
-	command.  Only "simple" returns are byte-compiled; in particular,
-	if the -code, -errorinfo or -errorcode flags are used, the command
-	is not byte-compiled.
+	command. Only "simple" returns are byte-compiled; in particular, if
+	the -code, -errorinfo or -errorcode flags are used, the command is not
+	byte-compiled.
 
 2000-05-22  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* doc/scan.n: 
+	* doc/scan.n:
 	* doc/array.n: minor doc fixes [Bug: 5396]
 
 	* generic/tclEnv.c: cast cleanup [Bug: 5624]
@@ -1331,9 +1303,9 @@
 
 	* generic/tclStubInit.c:
 	* generic/tclIntDecls.h:
-	* generic/tclInt.decls: removed TclTestChannel*Cmd from internal
-	stubs table and added TclChannelEventScriptInvoker to the internal
-	stubs table so it can be used from the test code.
+	* generic/tclInt.decls: removed TclTestChannel*Cmd from internal stubs
+	table and added TclChannelEventScriptInvoker to the internal stubs
+	table so it can be used from the test code.
 
 2000-05-18  Eric Melski  <ericm@scriptics.com>
 
@@ -1342,9 +1314,9 @@
 
 	* generic/tclDate.c: Regenerated from tclGetDate.y.
 
-	* generic/tclGetDate.y: Tweaked grammar to properly handle the
-	"ago" keyword when it follows multiple relative unit specifiers,
-	as in "2 days 2 hours ago".  [Bug: 5497].
+	* generic/tclGetDate.y: Tweaked grammar to properly handle the "ago"
+	keyword when it follows multiple relative unit specifiers, as in "2
+	days 2 hours ago". [Bug: 5497]
 
 2000-05-18  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1354,9 +1326,9 @@
 	* generic/tclClock.c (FormatClock): correct code to handle locale
 	specific return values from strftime, if any. [Bug: 3345]
 
-	* unix/tclUnixInit.c (TclpSetInitialEncodings): attempt to
-	correct setlocale calls for XIM support and locale issues.
-	[BUG: 5422 3345 4236 2522 2521]
+	* unix/tclUnixInit.c (TclpSetInitialEncodings): attempt to correct
+	setlocale calls for XIM support and locale issues. [BUG: 5422 3345
+	4236 2522 2521]
 
 2000-05-17  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1373,32 +1345,32 @@
 
 2000-05-10  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclPosixStr.c (Tcl_SignalMsg): clarified #defines for
-	Linux on Sparc to compile correctly. [Bug: 5364]
+	* generic/tclPosixStr.c (Tcl_SignalMsg): clarified #defines for Linux
+	on Sparc to compile correctly. [Bug: 5364]
 
 	* doc/namespace.n:
 	* tests/namespace.test:
-	* generic/tclNamesp.c (Tcl_NamespaceObjCmd): added 'namespace
-	exists' command. [Bug: 4665]
+	* generic/tclNamesp.c (Tcl_NamespaceObjCmd): added 'namespace exists'
+	command. [Bug: 4665]
 
 	* doc/source.n:
 	* doc/Eval.3:
 	* tests/source.test:
-	* generic/tclIOUtil.c (Tcl_EvalFile): added explicit \32 (^Z)
-	eofchar (affects Tcl_EvalFile in C, "source" in Tcl).  This was
-	implicit on Windows already, and is now cross-platform to allow
-	for scripted documents.
+	* generic/tclIOUtil.c (Tcl_EvalFile): added explicit \32 (^Z) eofchar
+	(affects Tcl_EvalFile in C, "source" in Tcl). This was implicit on
+	Windows already, and is now cross-platform to allow for scripted
+	documents.
 
 2000-05-09  Andreas Kupries  <a.kupries@westend.com>
 	operating as proxy for David Gravereaux <davygrvy@pobox.com>
-	
+
 	* win/tclWinThrd.c (TclpInitLock, TclpMasterLock): Added missing
-	  initialization of joinLock.
+	initialization of joinLock.
 
 2000-05-09  Eric Melski  <ericm@scriptics.com>
 
-	* tests/lsearch.test: 
-	* doc/lsearch.n: 
+	* tests/lsearch.test:
+	* doc/lsearch.n:
 	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Extended [lsearch] to
 	support sorted list searching and typed list searching. [RFE: 4098].
 
@@ -1408,19 +1380,19 @@
 	* tests/expr.test:
 	* tests/expr-old.test: added tests for 'eq' and 'ne'
 	* generic/tclExecute.c:
-	* generic/tclCompile.h: added INST_STREQ and INST_STRNEQ opcodes
-	that do strict string comparisons.
+	* generic/tclCompile.h: added INST_STREQ and INST_STRNEQ opcodes that
+	do strict string comparisons.
 	* generic/tclCompExpr.c: added 'eq' and 'ne' string comparison
 	operators.
-	* generic/tclParseExpr.c (GetLexeme): added 'eq' and 'ne' expr
-	parse terms (string (in)equality check).
+	* generic/tclParseExpr.c (GetLexeme): added 'eq' and 'ne' expr parse
+	terms (string (in)equality check).
 
 	* generic/tclCmdIL.c (Tcl_LinsertObjCmd): made use of
-	Tcl_DuplicateObj where code was otherwise duplicated.  Made
-	special case of inserting one element at the end work again (where
-	index == len).
-	(Tcl_LreplaceObjCmd): moved Tcl_DuplicateObj call lower and
-	cleaned	up use of other arguments.
+	Tcl_DuplicateObj where code was otherwise duplicated. Made special
+	case of inserting one element at the end work again (where index ==
+	len).
+	(Tcl_LreplaceObjCmd): moved Tcl_DuplicateObj call lower and cleaned
+	up use of other arguments.
 
 	* generic/tclObj.c (Tcl_DuplicateObj): simplified code to call
 	TclInitStringRep, which the code was just duplicating in part.
@@ -1437,16 +1409,15 @@
 
 2000-05-08  Eric Melski  <ericm@scriptics.com>
 
-	* tests/set-old.test: 
-	* doc/array.n: 
+	* tests/set-old.test:
+	* doc/array.n:
 	* generic/tclVar.c: Added [array statistics] command [RFE: 4557]
 
 2000-05-06  Andreas Kupries <a.kupries@westend.com>
 	operating as proxy for David Gravereaux <davygrvy@pobox.com>
 
-	* tclThreadJoin.c: Fixed several places with missing a & in
-	  arguments to calls of Tcl_Mutex(Un)lock and
-	  Tcl_ConditionNotify functions.
+	* tclThreadJoin.c: Fixed several places with missing a & in arguments
+	to calls of Tcl_Mutex(Un)lock and Tcl_ConditionNotify functions.
 
 2000-05-02  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1480,72 +1451,70 @@
 
 2000-05-02  Andreas Kupries <a.kupries@westend.com>
 
-	* Overall changes:
+	Overall changes:
 	  (1) Implementation of joinable threads for all platforms.
-	  (2) Additional API's for channels. Required to allow the
-	  thread extension to move channels between threads.
+	  (2) Additional API's for channels. Required to allow the thread
+	      extension to move channels between threads.
 
 	* generic/tcl.decls (lines 1360f): Added Tcl_JoinThread,
-	  Tcl_IsChannelShared, Tcl_IsChannelRegistered, Tcl_CutChannel,
-	  Tcl_SpliceChannel, Tcl_IsChannelExisting and
-	  Tcl_ClearChannelHandlers (slots 394 to 400).
+	Tcl_IsChannelShared, Tcl_IsChannelRegistered, Tcl_CutChannel,
+	Tcl_SpliceChannel, Tcl_IsChannelExisting and Tcl_ClearChannelHandlers
+	(slots 394 to 400).
 
 	* generic/tclIO.c: Implemented Tcl_IsChannelRegistered,
- 	  Tcl_IsChannelShared, Tcl_CutChannel, Tcl_SpliceChannel,
- 	  Tcl_IsChannelExisting and Tcl_ClearChannelHandlers.
-	  Tcl_CutChannel uses code from CloseChannel. Replaced this code
- 	  by a call to Tcl_CutChannel.  Replaced several code fragments
- 	  adding channels to the channel list with calls to
- 	  Tcl_SpliceChannel. Removed now unused variables from
- 	  CloseChannel and Tcl_UnstackChannel.  Tcl_ClearChannelHandlers
- 	  uses code from Tcl_Close. Replaced this code by a call to
- 	  Tcl_ClearChannelHandlers. Removed now unused variables from
- 	  Tcl_Close. Added the subcommands 'cut', 'forgetch', 'splice' and
- 	  'isshared' to the test code
-	  (TclTestChannelCmd).
+	Tcl_IsChannelShared, Tcl_CutChannel, Tcl_SpliceChannel,
+	Tcl_IsChannelExisting and Tcl_ClearChannelHandlers.  Tcl_CutChannel
+	uses code from CloseChannel. Replaced this code by a call to
+	Tcl_CutChannel. Replaced several code fragments adding channels to
+	the channel list with calls to Tcl_SpliceChannel. Removed now unused
+	variables from CloseChannel and Tcl_UnstackChannel.
+	Tcl_ClearChannelHandlers uses code from Tcl_Close. Replaced this code
+	by a call to Tcl_ClearChannelHandlers. Removed now unused variables
+	from Tcl_Close. Added the subcommands 'cut', 'forgetch', 'splice' and
+	'isshared' to the test code (TclTestChannelCmd).
 
 	* unix/tclUnixThread.c: Implemented Tcl_JoinThread using the
-	  pthread-functionality.
+	pthread-functionality.
 
 	* win/tclWinThrd.c: Fixed several small typos in comments.
-	  Implemented Tcl_JoinThread using a platform independent
-	  emulation layer (see generic/tclThreadJoin.c below). Added
-	  'joinLock' to serialize Tcl_CreateThread and TclpExitThread to
-	  prevent a race for joinable threads.
+	Implemented Tcl_JoinThread using a platform independent emulation
+	layer (see generic/tclThreadJoin.c below). Added 'joinLock' to
+	serialize Tcl_CreateThread and TclpExitThread to prevent a race for
+	joinable threads.
 
 	* mac/tclMacThrd.c: Implemented Tcl_JoinThread using a platform
-	  independent emulation layer (see generic/tclThreadJoin.c
-	  below). Due to the cooperative nature of threading on this
-	  platform the race mentioned above is not present.
+	independent emulation layer (see generic/tclThreadJoin.c below). Due
+	to the cooperative nature of threading on this platform the race
+	mentioned above is not present.
 
-	* generic/tclThreadJoin.c: New file. Contains a platform
-	  independent emulation layer helping in the implementation of
-	  joinable threads for the win and mac platforms.
+	* generic/tclThreadJoin.c: New file. Contains a platform independent
+	emulation layer helping in the implementation of joinable threads for
+	the win and mac platforms.
 
 	* generic/tclInt.h: Added declarations for TclJoinThread,
-	  TclRememberJoinableThread and TclSignalExitThread. These
-	  procedures define the API of the emulation layer for joinable
-	  threads (see generic/tclThreadJoin.c above).
+	TclRememberJoinableThread and TclSignalExitThread. These procedures
+	define the API of the emulation layer for joinable threads (see
+	generic/tclThreadJoin.c above).
 
 	* win/Makefile.in:
 	* win/makefile.vc: Added generic/tclTheadJoin.o to the rules.
 
-	* mac/: I don't know to which file generic/tclTheadJoin.o has to
-	  be added to so that it compiles. Sorry.
+	* mac/: I don't know to which file generic/tclTheadJoin.o has to be
+	added to so that it compiles. Sorry.
 
-	* unix/tclUnixChan.c: #ifdef'd the thread-local list of file
- 	  channels as it prevents us from transfering channels. To restore
- 	  this we may need an extended interface to drivers in the
- 	  future. Target: 9.0. Found while testing the new transfer of
- 	  channels. The information in this list for a channel was left
- 	  behind and then crashed the system during finalization.
+	* unix/tclUnixChan.c: #ifdef'd the thread-local list of file channels
+	as it prevents us from transfering channels. To restore this we may
+	need an extended interface to drivers in the future. Target:
+	9.0. Found while testing the new transfer of channels. The information
+	in this list for a channel was left behind and then crashed the system
+	during finalization.
 
 	* generic/tclThreadTest.c: Added -joinable flag to 'testthread
-	  create'. Added subcommand 'testthread join'.
+	create'. Added subcommand 'testthread join'.
 
 	* doc/CrtChannel.3: Added documentation for Tcl_IsChannelRegistered,
- 	  Tcl_IsChannelShared, Tcl_CutChannel, Tcl_SpliceChannel,
-	  Tcl_IsChannelExisting and Tcl_ClearChannelHandlers.
+	Tcl_IsChannelShared, Tcl_CutChannel, Tcl_SpliceChannel,
+	Tcl_IsChannelExisting and Tcl_ClearChannelHandlers.
 
 	* doc/Thread.3: Added documentation for Tcl_JoinThread.
 
@@ -1563,8 +1532,8 @@
 
 2000-04-26  Eric Melski  <ericm@scriptics.com>
 
-	* doc/memory.n: Man page for Tcl "memory" command, which is
-	created when TCL_MEM_DEBUG is defined at compile time.
+	* doc/memory.n: Man page for Tcl "memory" command, which is created
+	when TCL_MEM_DEBUG is defined at compile time.
 
 	* doc/TCL_MEM_DEBUG.3: Man page with overall information about
 	TCL_MEM_DEBUG usage.
@@ -1577,13 +1546,13 @@
 	* unix/mkLinks: Regen'd with new mkLinks.tcl.
 
 	* unix/mkLinks.tcl: Fixed indentation, made link setup more
-	intelligent (only do one existance test per man page, instead of
-	one per function).
+	intelligent (only do one existance test per man page, instead of one
+	per function).
 
 	* doc/library.n: Fixed .SH NAME macro to include each function
-	documented on the page, so that mkLinks will know about the
-	functions listed there, and so that the Windows help file index
-	will get set up correctly [Bug: 1898, 5273].
+	documented on the page, so that mkLinks will know about the functions
+	listed there, and so that the Windows help file index will get set up
+	correctly [Bug: 1898, 5273].
 
 2000-04-26  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1613,42 +1582,41 @@
 
 2000-04-25  Eric Melski  <ericm@scriptics.com>
 
-	* unix/mkLinks: 
+	* unix/mkLinks:
 	* doc/AddErrInfo.3: Added information about Tcl_LogCommandInfo
 	[Bug: 1818].
 
 2000-04-24  Eric Melski  <ericm@scriptics.com>
 
-	* unix/mkLinks: 
+	* unix/mkLinks:
 	* doc/OpenFileChnl.3: Added man entry for Tcl_Ungets [Bug: 1834].
 
-	* unix/mkLinks: 
+	* unix/mkLinks:
 	* doc/SourceRCFile.3: Man page for Tcl_SourceRCFile [Bug: 1833].
 
-	* unix/mkLinks: 
+	* unix/mkLinks:
 	* doc/ParseCmd.3: Added documentation for Tcl_ParseVar [Bug: 1828].
 
 2000-04-24  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* unix/tclUnixNotfy.c (Tcl_FinalizeNotifier, NotifierThreadProc):
-	added write of 'q' into triggerPipe for notifier in threaded case,
-	so that Tcl doesn't hang when children are still running [Bug: 4139]
+	added write of 'q' into triggerPipe for notifier in threaded case, so
+	that Tcl doesn't hang when children are still running [Bug: 4139]
 
 	* unix/tclUnixThrd.c (Tcl_MutexLock): minor comment fixes.
 
 2000-04-23  Jim Ingham  <jingham@cygnus.com>
 
 	These changes make some error handling marginally better for Mac
-	sockets.  It is still somewhat flakey, however.
-
-	* mac/tclMacSock.c (TcpClose): Add timeouts to the close - these
-	don't seem to be honored, however.
-	Use a separate PB for the release, since an async connect socket
-	will still be using the original buffer.
-	Make sure TCPRelease returns noErr before freeing the recvBuff.
-	If the call returns an error, then the buffer is not right.
-	* mac/tclMacSock.c (CreateSocket): Add timeouts to the async
-	create. These don't seem to trigger, however.  Sigh...
+	sockets. It is still somewhat flakey, however.
+
+	* mac/tclMacSock.c (TcpClose): Add timeouts to the close - these don't
+	seem to be honored, however. Use a separate PB for the release, since
+	an async connect socket will still be using the original buffer. Make
+	sure TCPRelease returns noErr before freeing the recvBuff. If the call
+	returns an error, then the buffer is not right.
+	* mac/tclMacSock.c (CreateSocket): Add timeouts to the async create.
+	These don't seem to trigger, however. Sigh...
 	* mac/tclMacSock.c (WaitForSocketEvent): If an TCP_ASYNC_CONNECT
 	socket errors out, then return EWOULDBLOCK & error out.
 	* mac/tclMacSock.c (NotifyRoutine): Added a NotifyRoutine for
@@ -1662,20 +1630,20 @@
 2000-04-21  Sandeep Tamhankar <sandeep@scriptics.com>
 
 	* library/http2.1/http.tcl: Fixed a newly introduced bug where if
-	there's a -command callback and something goes wrong, geturl threw
-	an exception, called the callback, and unset the token.  I changed
-	it so that it will not call the callback when throwing an
-	exception (so the caller only finds out about a given error from
-	one place).  Also, fixed http::ncode so that it actually gives you
-	back the http return code (i.e. 200, 404, etc.) instead of the
-	first digit of the version of HTTP being used (i.e. 1).
+	there's a -command callback and something goes wrong, geturl threw an
+	exception, called the callback, and unset the token. I changed it so
+	that it will not call the callback when throwing an exception (so the
+	caller only finds out about a given error from one place).  Also,
+	fixed http::ncode so that it actually gives you back the http return
+	code (i.e. 200, 404, etc.) instead of the first digit of the version
+	of HTTP being used (i.e. 1).
 
 2000-04-21  Brent Welch <welch@scriptics.com>
 
 	* library/http2.1/http.tcl: More thrashing with the "server closes
-	without reading post data" scenario.  Reverted to the previous
-	filevent configuratiuon, which seems to work better with small
-	amounts of post data.  
+	without reading post data" scenario. Reverted to the previous filevent
+	configuratiuon, which seems to work better with small amounts of post
+	data.
 
 2000-04-20  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1688,15 +1656,15 @@
 	* library/dde1.1/pkgIndex.tcl:
 	* library/reg1.0/pkgIndex.tcl:
 	* win/tclWinChan.c:
-	* win/tclWinThrd.c: converted CRLF to LF the */tcl.hpj.in files
-	were not converted, as it confuses hcw locally. [Bug: 5096]
+	* win/tclWinThrd.c: converted CRLF to LF the */tcl.hpj.in files were
+	not converted, as it confuses hcw locally. [Bug: 5096]
 
 	* win/Makefile.in: expanded cleanup target for help files
 
 	* doc/Thread.3: minor macro cleanup
 
-	* generic/tclFileName.c (SplitUnixPath): added support for QNX
-	node ids.
+	* generic/tclFileName.c (SplitUnixPath): added support for QNX node
+	ids.
 
 2000-04-18  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1716,9 +1684,8 @@
 	* unix/Makefile.in: added install-strip target; bindir, libdir,
 	mandir, includedir vars; tclLoadDyld.c target [Bug: 2527]
 
-	* unix/tclUnixChan.c (CreateSocket): force a socket back into
-	blocking mode (default state) after a -async connect succeeds.
-	[Bug: 4388]
+	* unix/tclUnixChan.c (CreateSocket): force a socket back into blocking
+	mode (default state) after a -async connect succeeds. [Bug: 4388]
 
 	* generic/tclEvent.c (TclInitSubsystems): Moved tclLibraryPath to
 	thread-local storage to prevent thread-related race condition.
@@ -1732,23 +1699,23 @@
 	* win/Makefile.in:
 	* win/tcl.rc:
 	* win/tclsh.rc:
-	* win/tclsh.ico:  Modified copyright dates in Windows resource
-	files.  Added an icon for tclsh.exe.
+	* win/tclsh.ico:  Modified copyright dates in Windows resource files.
+	Added an icon for tclsh.exe.
 
 2000-04-17  Brent Welch <welch@scriptics.com>
 
 	* generic/tcl.h, generic/tclThreadTest.c, unix/tclUnixThrd.c,
-	win/tclWinThread.c, mac/tclMacThread.c:
-	Added Tcl_CreateThreadType and TCL_RETURN_THREAD_TYPE
-	macros for declaring the NewThread callback proc.
+	* win/tclWinThread.c, mac/tclMacThread.c: Added Tcl_CreateThreadType
+	and TCL_RETURN_THREAD_TYPE macros for declaring the NewThread callback
+	proc.
 
 2000-04-14  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* unix/tclUnixChan.c (TtyParseMode): Only allow setting mark/space
 	parity on platforms that support it [Bug: 5089]
 
-	* generic/tclBasic.c (Tcl_GetVersion): adjusted use of major/minor
-	to not conflict with global decl on some systems [Bug: 2882]
+	* generic/tclBasic.c (Tcl_GetVersion): adjusted use of major/minor to
+	not conflict with global decl on some systems [Bug: 2882]
 
 	* doc/AppInit.3:
 	* doc/Async.3:
@@ -1798,17 +1765,17 @@
 	* generic/tcl.h: Fixed Tcl_CreateThread declaration.
 	* library/tcltest1.0/tcltest.tcl: Fixed the "mainThread"
 	initialization to work with either testthread or the thread extension
-	* unix/tclUnixThrd.c: Fixed compiler warning when compiling
-	with -DTCL_THREADS
+	* unix/tclUnixThrd.c: Fixed compiler warning when compiling with
+	-DTCL_THREADS
 
 2000-04-10  Eric Melski  <ericm@scriptics.com>
 
-	* win/tclWinPipe.c (TclpCreateTempFile): Added conversion of
-	contents string from UTF to native encoding [Bug: 4030].
+	* win/tclWinPipe.c (TclpCreateTempFile): Added conversion of contents
+	string from UTF to native encoding [Bug: 4030].
 
 	* tests/regexp.test: Added tests for infinite looping in [regexp
 	-all].
-	
+
 	* generic/tclCmdMZ.c: Fixed infinite loop bug with [regexp -all]
 	[Bug: 4981].
 
@@ -1817,14 +1784,13 @@
 
 2000-04-09  Brent Welch <welch@scriptics.com>
 
-	* lib/httpd2.1/http.tcl: Worked on the "server closes before
-	reading post data" case, which unfortunately causes different
-	error cases on Solaris, which can read the reply, and Linux
-	and Windows, which cannot read anything.  This is all in the
-	loop-back case - client and server on the same host.  Also
-	unified the error handling so the "ioerror" status goes away
-	and errors are reflected in a more uniform way. Updated the
-	man page to document the behavior.
+	* lib/httpd2.1/http.tcl: Worked on the "server closes before reading
+	post data" case, which unfortunately causes different error cases on
+	Solaris, which can read the reply, and Linux and Windows, which cannot
+	read anything. This is all in the loop-back case - client and server
+	on the same host. Also unified the error handling so the "ioerror"
+	status goes away and errors are reflected in a more uniform way.
+	Updated the man page to document the behavior.
 
 2000-04-09  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -1834,70 +1800,68 @@
 	* generic/tclBasic.c (Tcl_SetCommandInfo): comment fix
 
 	* unix/tclUnixThrd.c (Tcl_CreateThread): moved TCL_THREADS ifdef
-	inside of func as it is declared for non-threads builds as well.
-	In the non-threads case, it always returns TCL_ERROR (couldn't
-	create thread).
+	inside of func as it is declared for non-threads builds as well. In
+	the non-threads case, it always returns TCL_ERROR (couldn't create
+	thread).
 
 2000-04-08  Andreas Kupries <a.kupries@westend.com>
 
 	* Overall change: Definition of a public API for the creation of
-	  new threads.
+	new threads.
 
 	* generic/tclInt.h (line 1802f): Removed the definition of
 	'TclpThreadCreate'. (line 793f) Removed the definition of
 	'Tcl_ThreadCreateProc'.
 
 	* generic/tcl.h (line 388f): Readded the definition of
-	  'Tcl_ThreadCreateProc'. Added Win32 stuff send in by David
-	  Graveraux <davygrvy@bigfoot.com> to that too (__stdcall,
-	  ...). Added macros for the default stacksize and allowed flags.
+	'Tcl_ThreadCreateProc'. Added Win32 stuff send in by David Graveraux
+	<davygrvy@bigfoot.com> to that too (__stdcall, ...). Added macros for
+	the default stacksize and allowed flags.
 
 	* generic/tcl.decls (line 1356f): Added definition of
-	  'Tcl_CreateThread', slot 393 of the stub table. Two new
-	  arguments in the public API, for stacksize and flags.
+	'Tcl_CreateThread', slot 393 of the stub table. Two new arguments in
+	the public API, for stacksize and flags.
 
 	* win/tclWinThrd.c:
 	* mac/tclMacThrd.c: Renamed TclpThreadCreate to Tcl_CreateThread,
-	  added handling of the stacksize. Flags are currently ignored.
+	added handling of the stacksize. Flags are currently ignored.
 
-	* unix/tclUnixThrd.c: See above, but handles joinable
-	  flag. Ignores the specified stacksize if the macro
-	  HAVE_PTHREAD_ATTR_SETSTACKSIZE is not defined.
+	* unix/tclUnixThrd.c: See above, but handles joinable flag. Ignores
+	the specified stacksize if the macro HAVE_PTHREAD_ATTR_SETSTACKSIZE is
+	not defined.
 
 	* generic/tclThreadTest.c (line 363): See below.
 
-	* unix/tclUnixNotfy.c (line 210): Adapted to the changes
-	  above. Uses default stacksize and no flags now.
+	* unix/tclUnixNotfy.c (line 210): Adapted to the changes above. Uses
+	default stacksize and no flags now.
 
 	* unic/tcl.m4 (line 382f): Added a check for
-	  'pthread_attr_setstacksize' to detect platforms not implementing
-	  this feature of pthreads. If it is implemented, configure will
-	  define the macro HAVE_PTHREAD_ATTR_SETSTACKSIZE (See
-	  unix/tclUnixThrd.c too).
+	'pthread_attr_setstacksize' to detect platforms not implementing this
+	feature of pthreads. If it is implemented, configure will define the
+	macro HAVE_PTHREAD_ATTR_SETSTACKSIZE (See unix/tclUnixThrd.c too).
 
-	* doc/Thread.3: Added Tcl_CreateThread and its arguments to the
-	  list of described functions. Removed stuff about not providing a
-	  public C-API for thread-creation.
+	* doc/Thread.3: Added Tcl_CreateThread and its arguments to the list
+	of described functions. Removed stuff about not providing a public
+	C-API for thread-creation.
 
 2000-04-07  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* doc/binary.n: clarified docs on sign extension in binary scan
-	[Bug: 3466]
+	* doc/binary.n: clarified docs on sign extension in binary scan [Bug:
+	3466]
 
 	* library/tcltest1.0/tcltest.tcl (initConstraints): removed win32s
 	references (no longer supported)
 
-	* tests/fCmd.test: marked test 8.1 knownBug because it is
-	dangerous on poorly configured systems [Bug: 3881]
-	and added 8.2 to keep essence of 8.1 tested.
+	* tests/fCmd.test: marked test 8.1 knownBug because it is dangerous on
+	poorly configured systems [Bug: 3881] and added 8.2 to keep essence of
+	8.1 tested.
 
 2000-04-05  Andreas Kupries <a.kupries@westend.com>
 
-	* generic/tclIO.c (Tcl_UnstackChannel, line 1831): Forcing
-	interest mask to the correct value after an unstack and
-	re-initialization of the notifier via the watchProc. Without this
-	the first fileevent after an unstack will come through and be
-	processed, but no more. [Bug: ??].
+	* generic/tclIO.c (Tcl_UnstackChannel, line 1831): Forcing interest
+	mask to the correct value after an unstack and re-initialization of
+	the notifier via the watchProc. Without this the first fileevent after
+	an unstack will come through and be processed, but no more. [Bug: ??].
 
 2000-03-04  Brent Welch  <welch@scriptics.com>
 
@@ -1909,18 +1873,18 @@
 
 2000-03-29  Sandeep Tamhankar <sandeep@scriptics.com>
 
-	* library/http2.1/http.tcl: For the -querychannel option,
-	fconfigure the socket to be binary so that we don't translate
-	anything while reading the data.  This is because we determine the
-	content length of the data on the channel by using seek (to the end
-	of the file) and tell on the file handle, and we need the
-	content-length to match the amount of data actually sent, and
-	translation can affect the number of bytes posted.
+	* library/http2.1/http.tcl: For the -querychannel option, fconfigure
+	the socket to be binary so that we don't translate anything while
+	reading the data. This is because we determine the content length of
+	the data on the channel by using seek (to the end of the file) and
+	tell on the file handle, and we need the content-length to match the
+	amount of data actually sent, and translation can affect the number of
+	bytes posted.
 
 2000-04-03  Andreas Kupries <a.kupries@westend.com>
 
-	* Overall change: Definition of public API's for the finalization
-	of conditions and mutexes. [Bug: 4199].
+	* Overall change: Definition of public API's for the finalization of
+	conditions and mutexes. [Bug: 4199].
 
 	* generic/tclInt.h: Removed definitions of TclFinalizeMutex and
 	TclFinalizeCondition.
@@ -1928,27 +1892,26 @@
 	* generic/tcl.decls: Added declarations of Tcl_MutexFinalize and
 	Tcl_ConditionFinalize.
 
-	* generic/tclThread.c: Renamed TclFinalizeMutex to
-	Tcl_MutexFinalize. Renamed TclFinalizeCondition to
-	Tcl_ConditionFinalize.
+	* generic/tclThread.c: Renamed TclFinalizeMutex to Tcl_MutexFinalize.
+	Renamed TclFinalizeCondition to Tcl_ConditionFinalize.
 
 	* generic/tclNotify.c: Changed usage of TclFinalizeMutex to
 	Tcl_MutexFinalize.
 
-	* unix/tclUnixNotfy.c: 
+	* unix/tclUnixNotfy.c:
 	* generic/tclThreadTest.c: Changed usages of TclFinalizeCondition to
 	Tcl_ConditionFinalize.
 
 	* generic/tcl.h: Added empty macros for Tcl_MutexFinalize and
-	Tcl_ConditionFinalize, to be used when the core is compiled
-	without threads. 
+	Tcl_ConditionFinalize, to be used when the core is compiled without
+	threads.
 
 	* doc/Thread.3:	Added description the new API's.
 
 2000-04-03  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclCmdIL.c (InfoVarsCmd): checked for non-NULL procPtr
-	to prevent itcl info override crash [Bug: 4064]
+	* generic/tclCmdIL.c (InfoVarsCmd): checked for non-NULL procPtr to
+	prevent itcl info override crash [Bug: 4064]
 
 	* tests/foreach.test:
 	* tests/namespace.test:
@@ -1967,27 +1930,27 @@
 
 2000-04-03  Eric Melski  <ericm@scriptics.com>
 
-	* unix/tclUnixFCmd.c (SetGroupAttribute): 
-	* unix/tclUnixFCmd.c (SetOwnerAttribute): Added (uid_t) and (gid_t) 
+	* unix/tclUnixFCmd.c (SetGroupAttribute):
+	* unix/tclUnixFCmd.c (SetOwnerAttribute): Added (uid_t) and (gid_t)
 	casts to avoid compiler warnings.
 
 2000-03-31  Eric Melski  <ericm@scriptics.com>
 
 	* generic/tclGet.c (Tcl_GetDouble): Added additional conditions to
-	error test (previously only errno was checked, but the return
-	value of strtod() should be checked as well).  [Bug: 4118].
+	error test (previously only errno was checked, but the return value of
+	strtod() should be checked as well). [Bug: 4118]
 
-	* tests/exec.test: Added test for proper conversion of UTF data
-	when used with "<< $dataWithUTF" on exec's.
+	* tests/exec.test: Added test for proper conversion of UTF data when
+	used with "<< $dataWithUTF" on exec's.
 
 	* unix/tclUnixPipe.c (TclpCreateTempFile): Added
-	Tcl_UtfToExternalDString call, so that if there is UTF content in
-	the string it will be properly converted to the system encoding
-	before being written [Bug: 4030].
+	Tcl_UtfToExternalDString call, so that if there is UTF content in the
+	string it will be properly converted to the system encoding before
+	being written [Bug: 4030].
 	(TclpCreateTempFile): Added a check on the return value of tmpnam;
 	some systems (Linux, for example) will start to return NULL after
-	tmpnam has been called TMP_MAX times; not checking for this can
-	have bad results (overwriting temp files, core dumps, etc.)
+	tmpnam has been called TMP_MAX times; not checking for this can have
+	bad results (overwriting temp files, core dumps, etc.)
 
 2000-03-30  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -2000,8 +1963,8 @@
 	* win/tclWin32Dll.c: removed TclWinSynchSpawn (vestige of Win32s
 	support).
 
-	* win/tclWinReg.c: made use of TclWinGetPlatformId instead of
-	getting info again
+	* win/tclWinReg.c: made use of TclWinGetPlatformId instead of getting
+	info again
 
 	* win/tclWinPort.h:
 	* win/Makefile.in:
@@ -2019,16 +1982,15 @@
 
 2000-03-29  Sandeep Tamhankar <sandeep@scriptics.com>
 
-	* library/http2.1/http.tcl: Removed an unnecessary fileevent
-	statement from the error processing part of the Write method.
-	Also, fixed two potential memory leaks in wait and reset, in which
-	the state array wasn't being unset before throwing an exception.
-	Prior to this version, Brent checked in a fix to catch a
-	fileevent statement that was sometimes causing a stack trace when
-	geturl was called with -timeout.  I believe Brent's fix is
-	necessary because TLS closes bad sockets for secure connections,
-	and the fileevent was trying to act on a socket that no longer
-	existed.
+	* library/http2.1/http.tcl: Removed an unnecessary fileevent statement
+	from the error processing part of the Write method. Also, fixed two
+	potential memory leaks in wait and reset, in which the state array
+	wasn't being unset before throwing an exception. Prior to this
+	version, Brent checked in a fix to catch a fileevent statement that
+	was sometimes causing a stack trace when geturl was called with
+	-timeout. I believe Brent's fix is necessary because TLS closes bad
+	sockets for secure connections, and the fileevent was trying to act on
+	a socket that no longer existed.
 
 2000-03-27  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -2036,118 +1998,115 @@
 
 	* tests/namespace.test:
 	* generic/tclNamesp.c (Tcl_Export): added a uniq'ing test to the
-	export list so only one instance of each export pattern would
-	exist in the list.
+	export list so only one instance of each export pattern would exist in
+	the list.
 
-	* generic/tclExecute.c (TclExecuteByteCode): optimized case for
-	the empty string in ==/!= comparisons
+	* generic/tclExecute.c (TclExecuteByteCode): optimized case for the
+	empty string in ==/!= comparisons
 
 2000-03-27  Eric Melski  <ericm@scriptics.com>
 
-	* unix/tclUnixChan.c: Added (off_t) type casts in lseek() call
-	[Bug: 4409].
+	* unix/tclUnixChan.c: Added (off_t) type casts in lseek() call [Bug:
+	4409].
 
-	* unix/tclLoadAout.c: 
-	* unix/tclUnixPipe.c: Added (off_t) type casts in lseek() calls
-	[Bug: 4410].
+	* unix/tclLoadAout.c:
+	* unix/tclUnixPipe.c: Added (off_t) type casts in lseek() calls [Bug:
+	4410].
 
 2000-03-22  Sandeep Tamhankar <sandeep@scriptics.com>
 
-	* library/http2.1/http.tcl: Fixed a bug where string query data
-	that was bigger than queryblocksize would get duplicate characters
-	at block boundaries.
+	* library/http2.1/http.tcl: Fixed a bug where string query data that
+	was bigger than queryblocksize would get duplicate characters at block
+	boundaries.
 
 2000-03-22  Sandeep Tamhankar <sandeep@scriptics.com>
 
-	* library/http2.1/http.tcl: Fixed bug 4463, where we were getting
-	a stack trace if we tried to publish a project to a good host but
-	a port where there was no server listening.  It turned out the
-	problem was a stray fileevent that needed to be cleared.  Also,
-	fixed a bug where http::code could stack trace if called on a bad
-	token (one which didn't represent a successful geturl) by adding
-	an http element to the state array in geturl.
+	* library/http2.1/http.tcl: Fixed bug 4463, where we were getting a
+	stack trace if we tried to publish a project to a good host but a port
+	where there was no server listening.  It turned out the problem was a
+	stray fileevent that needed to be cleared.  Also, fixed a bug where
+	http::code could stack trace if called on a bad token (one which
+	didn't represent a successful geturl) by adding an http element to the
+	state array in geturl.
 
 2000-03-21  Eric Melski  <ericm@scriptics.com>
 
 	* tests/clock.test: Modified some tests that were not robust with
-	respect to the time zone in which they were run and were thus
-	failing.
+	respect to the time zone in which they were run and were thus failing.
 
-	* doc/clock.n: Clarified meaning of -gmt with respect to -base
-	when used with [clock scan] (-gmt does not affect the
-	interpretation of -base).
+	* doc/clock.n: Clarified meaning of -gmt with respect to -base when
+	used with [clock scan] (-gmt does not affect the interpretation of
+	-base).
 
 2000-03-19  Sandeep Tamhankar <sandeep@scriptics.com>
 
-	* library/http2.1/http.tcl: geturl used to throw an exception when
-	the connection failed; I accidentally returned a token with the
-	error info, breaking backwards compatibility.  I changed it back
-	to throwing an exception, but unsetting the state array first
-	(thus still eliminating the original memory leak problem).
+	* library/http2.1/http.tcl: geturl used to throw an exception when the
+	connection failed; I accidentally returned a token with the error
+	info, breaking backwards compatibility. I changed it back to throwing
+	an exception, but unsetting the state array first (thus still
+	eliminating the original memory leak problem).
 
 2000-03-19  Sandeep Tamhankar <sandeep@scriptics.com>
 
 	* library/http2.1/http.tcl: Added -querychannel option and altered
 	some of Brent's modifications to allow asynchronous posts (via
-	-command).  Also modified -queryprogress so that it calls the
-	query callback as <callback> <token> <total size> <current size>
-	to be consistent with -progress.  Added -queryblocksize option
-	with default 8192 bytes for post blocksize.  Fixed a bunch of
-	potential memory leaks for the case when geturl receives bad args
-	or can't open a socket, etc.  Overall, the package really rocks
-	now.
+	-command). Also modified -queryprogress so that it calls the query
+	callback as <callback> <token> <total size> <current size> to be
+	consistent with -progress. Added -queryblocksize option with default
+	8192 bytes for post blocksize. Fixed a bunch of potential memory leaks
+	for the case when geturl receives bad args or can't open a socket,
+	etc. Overall, the package really rocks now.
 
 	* doc/http.n: Added -queryblocksize, -querychannel, and
-	-queryprogress.  Also, changed the description of -blocksize,
-	which states that the -progress callback will be called for each
-	block, to now qualify that with an "if -progress is specified".
+	-queryprogress. Also, changed the description of -blocksize, which
+	states that the -progress callback will be called for each block, to
+	now qualify that with an "if -progress is specified".
 
 	* tests/http.test: Added a querychannel test for synchronous and
 	asynchronous posts, altered the queryprogress test such that the
-	callback conforms to the -progress format.  Also, had to use the
-	-queryblocksize option to do the post 16K at a time to match
-	Brent's expected results (and to test that -queryblocksize works).
+	callback conforms to the -progress format. Also, had to use the
+	-queryblocksize option to do the post 16K at a time to match Brent's
+	expected results (and to test that -queryblocksize works).
 
 2000-03-15  Brent Welch <welch@scriptics.com>
 
 	* library/http2.1/http.tcl: Added -queryprogress callback to
-	http::geturl and also changed it so that writing the post data
-	is event driven if the queryprogress callback or a timeout is given.
-	This allows a timeout to occur when writing lots of post data.
-	The queryprogress callback is called after each block of query
-	data is posted.  It has the same signature as the -progress callback.
+	http::geturl and also changed it so that writing the post data is
+	event driven if the queryprogress callback or a timeout is given.
+	This allows a timeout to occur when writing lots of post data. The
+	queryprogress callback is called after each block of query data is
+	posted. It has the same signature as the -progress callback.
 
 2000-03-06  Eric Melski  <ericm@scriptics.com>
 
 	* library/package.tcl: Applied patch from Bug: 2570; rather than
 	setting geometry of slave interp to 0x0 when Tk was loaded, it now
-	does "wm withdraw .".  Both remove the main window from the
-	display, but the former caused some internal structures to get
-	initialized to zero, which caused crashes with some extensions.
+	does "wm withdraw .". Both remove the main window from the display,
+	but the former caused some internal structures to get initialized to
+	zero, which caused crashes with some extensions.
 
 2000-03-02  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* library/package.tcl (tclPkgUnknown): extended to allow
-	recognizes changes in the auto_path while sourcing in other
-	pkgIndex.tcl files
+	* library/package.tcl (tclPkgUnknown): extended to allow recognizes
+	changes in the auto_path while sourcing in other pkgIndex.tcl files
 
 	* doc/FindExec.3: fixed doc for declaration of Tcl_FindExecutable
 	[Bug: 4275]
 
-	* generic/tclFileName.c (Tcl_TranslateFileName): Applied patch
-	from Newman to significantly speedup file split/join on Windows
-	(replaces regexp with custom parser).  [Bug: 2867]
+	* generic/tclFileName.c (Tcl_TranslateFileName): Applied patch from
+	Newman to significantly speedup file split/join on Windows (replaces
+	regexp with custom parser). [Bug: 2867]
 
-	* win/README.binary: change mailing lists from @consortium.org
-	to @scriptics.com [Bug: 4173]
+	* win/README.binary: change mailing lists from @consortium.org to
+	@scriptics.com [Bug: 4173]
 
 2000-02-28  Eric Melski  <ericm@scriptics.com>
 
 	* tests/clock.test: Added test for ISO bases < 100000
 
 	* generic/tclDate.c: (generated on Solaris)
-	* generic/tclGetDate.y: Changed condition for deciding if a number
-	is an ISO 8601 base from number >= 100000 to numberOfDigits >= 6.
+	* generic/tclGetDate.y: Changed condition for deciding if a number is
+	an ISO 8601 base from number >= 100000 to numberOfDigits >= 6.
 	Previously it would fail to recognize 000000 as an ISO base.
 
 2000-02-14  Eric Melski  <ericm@scriptics.com>
@@ -2166,42 +2125,41 @@
 	* doc/load.n: added notes about dll load errors on Windows
 
 	* unix/README:
-	* unix/Makefile.in (dist): removed porting.notes and porting.old
-	from distribution and CVS.  The information was very outdated.  Now
-	refer to http://dev.scriptics.com/services/support/platforms.html
+	* unix/Makefile.in (dist): removed porting.notes and porting.old from
+	distribution and CVS.  The information was very outdated. Now refer to
+	http://dev.scriptics.com/services/support/platforms.html
 
 	* tests/unixInit.test: fixed japanese LANG encoding test [Bug: 3549]
 
 	* unix/configure.in:
-	* unix/tcl.m4: correct CFLAG_WARNING setting,
-	fixed gcc config for AIX,
-	added -export-dynamic to LDFLAGS for FreeBSD-3+ [Bug: 2998]
+	* unix/tcl.m4: correct CFLAG_WARNING setting, fixed gcc config for
+	AIX, added -export-dynamic to LDFLAGS for FreeBSD-3+ [Bug: 2998]
 
 	* win/tclWinLoad.c (TclpLoadFile): improved error message for load
 	failures, could perhaps be even more intelligent.
 
 2000-02-09  Jim Ingham	 <jingham@cygnus.com>
 
-	* mac/tclMacSock.c: Don't panic when you get an error closing an async 
-	socket.	 This doesn't seem to hurt anything, and we return the error so
+	* mac/tclMacSock.c: Don't panic when you get an error closing an async
+	socket. This doesn't seem to hurt anything, and we return the error so
 	the caller can do the right thing.
 
 	New Files:
 	* mac/MW_TclHeader.h:
 	* mac/MW_TclTestHeader.h:
 	* mac/MW_TclTestHeader.pch:
-	* mac/MW_TclAppleScriptHeader.h: More convenient to use .h prefix files
-	in the preference panels...
+	* mac/MW_TclAppleScriptHeader.h: More convenient to use .h prefix
+	files in the preference panels...
 
 	The above are curtesy of Daniel Steffen (steffen@math.mq.edu.au)
 
 2000-02-08  Eric Melski  <ericm@scriptics.com>
 
 	* tests/clock.test: Added tests for "next monthname" constructs.
-	* generic/tclDate.c: 
+	* generic/tclDate.c:
 	* generic/tclGetDate.y (Message): Added a grammar rule for "next
-	monthname" so that we can handle "next january" and similar
-	constructs (bug #4146).
+	monthname" so that we can handle "next january" and similar constructs
+	(bug #4146).
 
 2000-02-08  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -2228,35 +2186,35 @@
 	* tests/httpold.test: changed test script to source in the httpd
 	server procs from httpd instead of having its own set.
 
-	* tests/httpd: improved query support in test httpd to handle fix
-	in http.tcl. [Bug: 4089 change 2000-02-01]
+	* tests/httpd: improved query support in test httpd to handle fix in
+	http.tcl. [Bug: 4089 change 2000-02-01]
 
-	* unix/README: fixed notes about --enable-shared and add note
-	about --disable-shared.
+	* unix/README: fixed notes about --enable-shared and add note about
+	--disable-shared.
 
 2000-02-07  Eric Melski  <ericm@scriptics.com>
 
-	* tests/package.test: 
-	* library/tclIndex: 
+	* tests/package.test:
+	* library/tclIndex:
 	* library/package.tcl: Renamed ::package namespace to ::pkg.
 
 2000-02-03  Eric Melski <ericm@scriptics.com>
 
 	* doc/Package.n:
-	* doc/packagens.n: Renamed Package.n -> packagens.n because Windows 
+	* doc/packagens.n: Renamed Package.n -> packagens.n because Windows
 	can't deal with case-sensitive names.
 
 2000-02-02  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* tests/regexp.test: added tests for -all and -inline switches
 	* doc/regexp.n: added docs for -all and -inline switches
-	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): added extra comments for
-	new -all and -inline switches to regexp command
+	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): added extra comments for new
+	-all and -inline switches to regexp command
 
 2000-02-01  Eric Melski  <ericm@scriptics.com>
 
-	* library/init.tcl: Applied patch from rfe 1734 regarding
-	auto_load errors not setting error message and errorInfo properly.
+	* library/init.tcl: Applied patch from rfe 1734 regarding auto_load
+	errors not setting error message and errorInfo properly.
 
 2000-02-01  Jeff Hobbs  <hobbs@scriptics.com>
 
@@ -2271,13 +2229,13 @@
 
 2000-01-31  Eric Melski  <ericm@scriptics.com>
 
-	* tests/package.test: 
-	* library/tclIndex: 
-	* library/package.tcl: Added ::package namespace and
-	::package::create function.
+	* tests/package.test:
+	* library/tclIndex:
+	* library/package.tcl: Added ::package namespace and ::package::create
+	function.
 
-	* library/init.tcl: Fixed problem with auto_load and determining
-	if commands were loaded.
+	* library/init.tcl: Fixed problem with auto_load and determining if
+	commands were loaded.
 
 	* library/auto.tcl: "Fixed" issues with $ in files to be auto indexed.
 
@@ -2289,66 +2247,66 @@
 
 2000-01-28  Eric Melski  <ericm@scriptics.com>
 
-	* tests/pkg/magicchar2.tcl: 
+	* tests/pkg/magicchar2.tcl:
 	* tests/autoMkindex.test: Test for auto loader fix (bug #2480).
 
 	* library/init.tcl: auto_load was using [info commands $name] to
-	determine if a given command was available; if the command name
-	had * or [] it, this would fail because info commands uses
-	glob-style matching.  This is fixed.  (Bug #2480).
+	determine if a given command was available; if the command name had *
+	or [] it, this would fail because info commands uses glob-style
+	matching. This is fixed. (Bug #2480).
 
-	* tests/pkg/spacename.tcl: 
+	* tests/pkg/spacename.tcl:
 	* tests/pkgMkIndex.test: Tests for fix for bug #2360.
 
-	* library/package.tcl: Fixed to extract only the first element of
-	the list returned by auto_qualify (bug #2360).
+	* library/package.tcl: Fixed to extract only the first element of the
+	list returned by auto_qualify (bug #2360).
 
-	* tests/pkg/magicchar.tcl: 
+	* tests/pkg/magicchar.tcl:
 	* tests/autoMkindex.test: Test for fix for bug #2611.
 
 	* library/auto.tcl: Fixed the regular expression that performs $
-	escaping before sourcing a file to index.  It was erroneously
-	adding \ escapes even to $'s that were already escaped,
-	effectively "un-escaping" those $'s.  (bug #2611).
+	escaping before sourcing a file to index. It was erroneously adding \
+	escapes even to $'s that were already escaped, effectively
+	"un-escaping" those $'s. (bug #2611).
 
 2000-01-27  Eric Melski  <ericm@scriptics.com>
 
-	* tests/autoMkindex.test: 
-	* library/auto.tcl: Applied patch (with slight modification) from
-	bug #2701:  auto_mkIndex uses platform dependent file paths.
-	Added test for fix.
+	* tests/autoMkindex.test:
+	* library/auto.tcl: Applied patch (with slight modification) from bug
+	#2701: auto_mkIndex uses platform dependent file paths. Added test for
+	fix.
 
 2000-01-27  Jennifer Hom  <jenn@scriptics.com>
 
 	* library/tcltest1.0/tcltest.tcl: Changed NormalizePath to
-	normalizePath and exported it as a public proc.  This proc 
-	creates an absolute path given the name of the variable containing
-	the path to modify.  The path is modified in place.
+	normalizePath and exported it as a public proc. This proc creates an
+	absolute path given the name of the variable containing the path to
+	modify. The path is modified in place.
 	* library/tcltest1.0/pkgIndex.tcl: Added normalizePath.
 	* tests/all.tcl: Changed code to use normalizePath.
 
 2000-01-27  Eric Melski  <ericm@scriptics.com>
 
 	* tests/pkg/samename.tcl: test file for bug #1983
-	
-	* tests/pkgMkIndex.test: 
-	* doc/pkgMkIndex.n: 
+
+	* tests/pkgMkIndex.test:
+	* doc/pkgMkIndex.n:
 	* library/package.tcl: Per rfe #4097, optimized creation of direct
-	load packages to bypass computing the list of commands added by
-	the new package.  Also made direct loading the default, and added
-	a -lazy option.
+	load packages to bypass computing the list of commands added by the
+	new package. Also made direct loading the default, and added a -lazy
+	option.
 	Fixed bug #1983, dealing with pkg_mkIndex incorrectly handling
-	situations with two procs by the same name but in different
-	namespaces (ie, foo::baz and bar::baz).
+	situations with two procs by the same name but in different namespaces
+	(ie, foo::baz and bar::baz).
 
 2000-01-26  Eric Melski  <ericm@scriptics.com>
 
 	* generic/tclNamesp.c: Undid fix for #956, which broke backwards
 	compatibility.
 
-	* doc/variable.n: 
-	* doc/trace.n: 
-	* doc/namespace.n: 
+	* doc/variable.n:
+	* doc/trace.n:
+	* doc/namespace.n:
 	* doc/info.n: Added further information about differences between
 	"namespace which" and "info exists".
 
@@ -2357,18 +2315,18 @@
 
 2000-01-25  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* unix/tcl.m4: modified EXTRA_CFLAGS to add -DHAVE_TZSET for
-	OSF1-V* and ULTRIX-4.* when not using gcc.  Also added higher min
-	stack size for OSF1-V* when building with threads. [Bug: 4063]
+	* unix/tcl.m4: modified EXTRA_CFLAGS to add -DHAVE_TZSET for OSF1-V*
+	and ULTRIX-4.* when not using gcc. Also added higher min stack size
+	for OSF1-V* when building with threads. [Bug: 4063]
 
 	* generic/tclClock.c (FormatClock): inlined resultPtr, as it
 	conflicted with var creation for HAVE_TZSET #def [Bug: 4063]
 
-	* generic/tclCmdIL.c (Tcl_LsortObjCmd): fixed potential leak
-	when calling lsort -command with bad command [Bug: 4067]
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): fixed potential leak when
+	calling lsort -command with bad command [Bug: 4067]
 
-	* generic/tclFileName.c (Tcl_JoinPath): added support for special
-	QNX node id prefixes in pathnames [Bug: 4053]
+	* generic/tclFileName.c (Tcl_JoinPath): added support for special QNX
+	node id prefixes in pathnames [Bug: 4053]
 
 	* doc/ListObj.3: clarified Tcl_ListObjGetElements docs [Bug: 4080]
 
@@ -2378,18 +2336,18 @@
 
 2000-01-23  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* library/init.tcl (auto_execok): added 'start' to list of
-	recognized built-in commands for COMSPEC on NT. [Bug: 2858]
+	* library/init.tcl (auto_execok): added 'start' to list of recognized
+	built-in commands for COMSPEC on NT. [Bug: 2858]
 
 	* unix/tclUnixPort.h: moved include of <utime.h> lower since some
 	systems (UTS) require sys/types.h to be included first [Bug: 4031]
 
-	* unix/tclUnixChan.c (CreateSocketAddress): changed comparison
-	with -1 to 0xFFFFFFFF, to ensure 32 bit comparison even on 64 bit
-	systems. [Bug: 3878]
+	* unix/tclUnixChan.c (CreateSocketAddress): changed comparison with -1
+	to 0xFFFFFFFF, to ensure 32 bit comparison even on 64 bit systems.
+	[Bug: 3878]
 
-	* generic/tclFileName.c: improved guessing of path separator
-	for the Mac. (Darley)
+	* generic/tclFileName.c: improved guessing of path separator for the
+	Mac. (Darley)
 
 	* generic/tclInt.h:
 	* generic/tcl.decls: moved Tcl_ProcObjCmd to stubs table [Bug: 3827]
@@ -2398,7 +2356,7 @@
 
 2000-01-21  Eric Melski  <ericm@scriptics.com>
 
-	* unix/mkLinks: 
+	* unix/mkLinks:
 	* doc/GetHostName.3: Man page for Tcl_GetHostName (bug #1817).
 
 	* doc/lreplace.n: Corrected man page with respect to treatment of
@@ -2412,24 +2370,24 @@
 	* generic/tclNamesp.c: Added check for undefined variables in
 	NamespaceWhichCmd (bug #956).
 
-	* tests/var.test: Added tests for corrected variable behavior 
-	(bug #981).
+	* tests/var.test: Added tests for corrected variable behavior (bug
+	#981).
 
 	* doc/upvar.n: Expanded explanation of upvar behavior with respect to
-	variable traces.  (bugs 3917 1433 2110).
+	variable traces. (bugs 3917 1433 2110).
 
 	* generic/tclVar.c: Changed behavior of variable command when name
 	refers to an element in an array (ie, "variable foo(x)") to always
-	return an error, regardless of existance of that element in the
-	array (now behavior is consistant with docs too) (bug #981).
+	return an error, regardless of existance of that element in the array
+	(now behavior is consistant with docs too) (bug #981).
 
 2000-01-20  Jeff Hobbs  <hobbs@scriptics.com>
 
-	* generic/tclCmdIL.c (InfoBodyCmd): made [info body] return a
-	string if the body has been bytecompiled.
+	* generic/tclCmdIL.c (InfoBodyCmd): made [info body] return a string
+	if the body has been bytecompiled.
 	* generic/tclBasic.c (Tcl_EvalObjEx): added pedantic check for
-	originating proc body of bytecompiled code, #def'd out as the
-	change for [info body] should make it unnecessary
+	originating proc body of bytecompiled code, #def'd out as the change
+	for [info body] should make it unnecessary
 
 	* unix/tclUnixNotfy.c (Tcl_InitNotifier): added cast for tsdPtr
 
@@ -2442,20 +2400,19 @@
 	* doc/vwait.n: added notes about requirement for vwait var being
 	globally scoped [Bug: 3329]
 
-	* library/word.tcl: changed tcl_(non)wordchars settings to use
-	new unicode regexp char class escapes instead of char sequences
+	* library/word.tcl: changed tcl_(non)wordchars settings to use new
+	unicode regexp char class escapes instead of char sequences
 
 2000-01-14  Eric Melski  <ericm@scriptics.com>
 
 	* tests/var.test: Added a test for the array multiple delete
 	protection in Tcl_UnsetVar2.
 
-	* generic/tclVar.c: Added protection in Tcl_UnsetVar2 against
-	attempts to multiply delete arrays when unsetting them (bug
-	#3453).  This could happen if there was an unset trace on an array
-	element and the trace proc made a global or upvar link to the
-	array, and then the array was unset at the global level.  See the
-	bug reference for more information.
+	* generic/tclVar.c: Added protection in Tcl_UnsetVar2 against attempts
+	to multiply delete arrays when unsetting them (bug #3453). This could
+	happen if there was an unset trace on an array element and the trace
+	proc made a global or upvar link to the array, and then the array was
+	unset at the global level. See the bug reference for more information.
 
 	* unix/tclUnixTime.c: New clock format format.
 
@@ -2480,14 +2437,14 @@
 
 2000-01-13  Eric Melski  <ericm@scriptics.com>
 
-	* tests/cmdIL.test: Added tests for lsort -dictionary with
-	characters that occur between Z and a in ASCII.
+	* tests/cmdIL.test: Added tests for lsort -dictionary with characters
+	that occur between Z and a in ASCII.
 
 	* generic/tclCmdIL.c: Modified DictionaryCompare function (used by
 	lsort -dictionary) to do upper/lower case equivalency before doing
-	character comparisons, instead of after.  This fixes bug #1357, in
-	which lsort -dictionary [list ` AA c CC] and lsort -dictionary
-	[list AA c ` CC] gave different (and both wrong) results.
+	character comparisons, instead of after. This fixes bug #1357, in
+	which lsort -dictionary [list ` AA c CC] and lsort -dictionary [list
+	AA c ` CC] gave different (and both wrong) results.
 
 2000-01-12  Eric Melski  <ericm@scriptics.com>
 
@@ -2497,23 +2454,22 @@
 
 	* doc/tests/clock.test: Added numerous tests for clock scan.
 
-	* doc/generic/tclGetDate.y: Fixed some shift/reduce conflicts in
-	clock grammar.
+	* doc/generic/tclGetDate.y: Fixed some shift/reduce conflicts in clock
+	grammar.
 
-	* doc/doc/clock.n: Added documentation for new supported clock
-	scan formats and additional explanation of daylight savings time
-	correction algorithm.
+	* doc/doc/clock.n: Added documentation for new supported clock scan
+	formats and additional explanation of daylight savings time correction
+	algorithm.
 
 2000-01-12  Jeff Hobbs  <hobbs@scriptics.com>
 
 	* doc/file.n:
 	* tests/unixFCmd.test:
-	* unix/tclUnixFCmd.c: added support for symbolic permissions
-	setting in SetPermissionsAttribute (file attr $file -perm ...)
-	[Bug: 3970]
+	* unix/tclUnixFCmd.c: added support for symbolic permissions setting
+	in SetPermissionsAttribute (file attr $file -perm ...) [Bug: 3970]
 
-	* generic/tclClock.c: fixed support for 64bit handling of clock
-	values [Bug: 1806]
+	* generic/tclClock.c: fixed support for 64bit handling of clock values
+	[Bug: 1806]
 
 	* generic/tclThreadTest.c: upped a buffer size to hold double
 
@@ -2526,20 +2482,20 @@
 	* tests/expr.test:
 	* unix/Makefile.in:
 	* unix/configure.in:
-	* unix/tcl.m4: recognize strtod bug on Tru64 v5.0 [Bug: 3378]
-	and added tests to prevent unnecessary chmod +x in sources while
+	* unix/tcl.m4: recognize strtod bug on Tru64 v5.0 [Bug: 3378] and
+	added tests to prevent unnecessary chmod +x in sources while
 	installing, as well as more intelligent setsockopt/gethostbyname
 	checks [Bug: 3366, 3389]
 
-	* unix/tclUnixThrd.c: added compile time support (through use of
-	the TCL_THREAD_STACK_MIN define) for increasing the default stack
-	size for a thread. [Bug: 3797, 1966]
+	* unix/tclUnixThrd.c: added compile time support (through use of the
+	TCL_THREAD_STACK_MIN define) for increasing the default stack size for
+	a thread. [Bug: 3797, 1966]
 
 2000-01-11  Eric Melski  <ericm@scriptics.com>
 
-	* generic/tclGetDate.y: Added comments for the Convert function.
-	Added a fix for daylight savings time handling for relative time
-	spans of days, weeks or fortnights. (bug 3441, 3868).
+	* generic/tclGetDate.y: Added comments for the Convert function. Added
+	a fix for daylight savings time handling for relative time spans of
+	days, weeks or fortnights. (bug 3441, 3868).
 
 	* generic/tclDate.c: Fixed compiler warning issues.
 
@@ -2548,8 +2504,8 @@
 	* compat/waitpid.c: use pid_t type instead of int [Bug: 3999]
 
 	* tests/utf.test: fixed test that allowed \8 as octal value
-	* generic/tclUtf.c: changed Tcl_UtfBackslash to not allow
-	non-octal digits (8,9) in \ooo substs. [Bug: 3975]
+	* generic/tclUtf.c: changed Tcl_UtfBackslash to not allow non-octal
+	digits (8,9) in \ooo substs. [Bug: 3975]
 
 	* generic/tcl.h: noted need to change win/tcl.m4 and
 	tools/tclSplash.bmp for minor version changes
@@ -2579,5 +2535,5 @@
 2000-01-07  Eric Melski  <ericm@scriptics.com>
 
 	* generic/tclClock.c: Changed switch in Tcl_ClockObjCmd to use
-	enumerated values instead of constants. (ie, COMMAND_SCAN instead
-	of 3).
+	enumerated values instead of constants. (ie, COMMAND_SCAN instead of
+	3).
diff --git a/ChangeLog.2001 b/ChangeLog.2001
index 2c8b4d7..06e7c36 100644
--- a/ChangeLog.2001
+++ b/ChangeLog.2001
@@ -1,20 +1,20 @@
 2001-12-28  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* library/init.tcl: make sure env(COMSPEC) on Windows is executed
-	with the right case, as it may otherwise fail inexplicably.
+	* library/init.tcl: make sure env(COMSPEC) on Windows is executed with
+	the right case, as it may otherwise fail inexplicably.
 
 2001-12-28  Don Porter <dgp@users.sourceforge.net>
 
-	* generic/tclCkalloc.c (MemoryCmd, TclFinalizeMemorySubsystem):
-	Added the [memory onexit] command, intended to replace [checkmem].
+	* generic/tclCkalloc.c (MemoryCmd, TclFinalizeMemorySubsystem): Added
+	the [memory onexit] command, intended to replace [checkmem].
 
-	* doc/DumpActiveMemory.3: 
+	* doc/DumpActiveMemory.3:
 	* doc/memory.n: Updated documentation for [memory] and related
-	matters.  [Bug 487677]
+	matters. [Bug 487677]
 
 	* mac/tclMacBOAMain.c (Tcl_Main, CheckmemCmd): Removed all the
-	machinery for the [checkmem] command that is completely duplicated
-	by code in generic/tclCkalloc.c.
+	machinery for the [checkmem] command that is completely duplicated by
+	code in generic/tclCkalloc.c.
 
 	* generic/tclBinary.c:
 	* generic/tclListObj.c:
@@ -27,12 +27,11 @@
 
 	* mac/tclMacInit.c:
 	* mac/tclMacTclCode.r: synced up tclInit features to unix/win:
-	implemented TclSetPreInitScript support, use of existing tclInit 
-	proc if defined, check of default encoding dir if set. Changed
-	script library resource names to lowercase (i.e. same as
-	corresponding files). Used Tcl_JoinPath instead of string append.
-	Check that system encoding could be loaded before utf translating
-	the LibraryPath.
+	implemented TclSetPreInitScript support, use of existing tclInit proc
+	if defined, check of default encoding dir if set. Changed script
+	library resource names to lowercase (i.e. same as corresponding
+	files). Used Tcl_JoinPath instead of string append. Check that system
+	encoding could be loaded before utf translating the LibraryPath.
 	* mac/tclMacApplication.r:
 	* mac/tclMacLibrary.r:
 	* mac/tclMacOSA.r:
@@ -41,147 +40,138 @@
 2001-12-21  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/tcl.m4 (SC_PATH_TCLCONFIG, SC_PATH_TKCONFIG):
-	Search for config file using exec_prefix instead of
-	prefix when no --with-tcl or --with-tk argument is used. [Bug 492418]
+	Search for config file using exec_prefix instead of prefix when no
+	--with-tcl or --with-tk argument is used. [Bug 492418]
 
 2001-12-21  Daniel Steffen <das@users.sourceforge.net>
 
-	* unix/tcl.m4: fixed incorrect SHLIB_LD_LIBS
-	setting for MacOSX / Darwin.
+	* unix/tcl.m4: fixed incorrect SHLIB_LD_LIBS setting for MacOSX /
+	Darwin.
 	* unix/configure: Regen.
-	* unix/mkLinks.tcl: improved case-insensitive
-	filesystem support.
+	* unix/mkLinks.tcl: improved case-insensitive filesystem support.
 	* unix/mkLinks: Regen.
 
 2001-12-19  Don Porter <dgp@users.sourceforge.net>
 
-	* unix/Makefile.in (dist): corrected use of eolFix.tcl on
-	working files.  It should operate on distributed files.  [Bug 495120]
+	* unix/Makefile.in (dist): corrected use of eolFix.tcl on working
+	files. It should operate on distributed files. [Bug 495120]
 
 2001-12-19  David Gravereaux <davygrvy@pobox.com>
 
-	* tools/tcl.wse.in: Fix for #495120.  tcl.wse.in was
-	stored in cvs with improper <eol>.  This resulted in
-	corrupted <eol> when checked-out on translating CVS
-	clients such as windows (CRCRLF) and mac (CRCR).
+	* tools/tcl.wse.in: Fix for [Bug 495120]. tcl.wse.in was stored in cvs
+	with improper <eol>. This resulted in corrupted <eol> when checked-out
+	on translating CVS clients such as windows (CRCRLF) and mac (CRCR).
 
 2001-12-19  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/configure:
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Update
-	SunOS 5.[0-6] target so that correct linker
-	options are passed to gcc or ld. [Tk Bug 220863]
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Update SunOS 5.[0-6] target so that
+	correct linker options are passed to gcc or ld. [Tk Bug 220863]
 
 2001-12-19  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* unix/README: Update to account for changes
-	in the unix/dltest directory, the way autoconf
-	is run, and the new "make shell" target.
+	* unix/README: Update to account for changes in the unix/dltest
+	directory, the way autoconf is run, and the new "make shell" target.
 
 2001-12-19  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* unix/Makefile.in: Rename dltest to dlpkgs to
-	fix problem where lib files were not getting
-	built because dltest/ directory already existed.
+	* unix/Makefile.in: Rename dltest to dlpkgs to fix problem where lib
+	files were not getting built because dltest/ directory already
+	existed.
 
 2001-12-19  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* win/tclWinSerial.c (SerialCheckProc): corrected time
-	calculations to be unsigned. (schroedter)
+	* win/tclWinSerial.c (SerialCheckProc): corrected time calculations to
+	be unsigned. (schroedter)
 
 2001-12-18  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* unix/Makefile.in: Define new dltest target that
-	simply does a cd to dltest/ before running make.
-	There is no need for the separate configure
-	script that was previously being used.
+	* unix/Makefile.in: Define new dltest target that simply does a cd to
+	dltest/ before running make. There is no need for the separate
+	configure script that was previously being used.
 	* unix/configure: Regen.
 	* unix/configure.in: Subst into dltest/Makefile.
-	* unix/dltest/Makefile.in: Define LIBS using
-	DL_LIBS, LIBS, and MATH_LIBS variables instead
-	of TCL_LIBS variable from tclConfig.sh.
-	* unix/dltest/README: Update readme to account for new
-	configure free implementation.
+	* unix/dltest/Makefile.in: Define LIBS using DL_LIBS, LIBS, and
+	MATH_LIBS variables instead of TCL_LIBS variable from tclConfig.sh.
+	* unix/dltest/README: Update readme to account for new configure free
+	implementation.
 	* unix/dltest/configure: Removed.
 	* unix/dltest/configure.in: Removed.
 
 2001-12-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tcl.h (TCL_STUB_MAGIC): Added cast to force type to be
-	an int and get rid of a persistent and pointless warning with
-	SunPro compiler.
+	* generic/tcl.h (TCL_STUB_MAGIC): Added cast to force type to be an
+	int and get rid of a persistent and pointless warning with SunPro
+	compiler.
 
-	* generic/tclCkalloc.c (Tcl_AttemptDbCkalloc,Tcl_AttemptDbCkrealloc): 
+	* generic/tclCkalloc.c (Tcl_AttemptDbCkalloc,Tcl_AttemptDbCkrealloc):
 	* generic/tcl.decls (Tcl_AttemptDbCkalloc,Tcl_AttemptDbCkrealloc):
-	Made the file parameters to these functions into CONST char *,
-	like they always should have been to match the other Tcl*Db* API
-	functions.
+	Made the file parameters to these functions into CONST char *, like
+	they always should have been to match the other Tcl*Db* API functions.
 
-2001-12-17  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-12-17  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* Applied #219311 on behalf of Rolf Schroedter
-	  <schroedter@users.sourceforge.net> to prevent fcopy on serial
-	  ports from flooding the event queue.
+	* Applied [Bug 219311] on behalf of Rolf Schroedter
+	<schroedter@users.sourceforge.net> to prevent fcopy on serial ports
+	from flooding the event queue.
 
 2001-12-11  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* doc/CrtInterp.3:
-	* generic/tclBasic.c: docs and comments corrections [Bug 493412]
-	Bug & patch by Don Porter.  
+	* generic/tclBasic.c: docs and comments corrections. [Bug 493412]
+	Bug & patch by Don Porter.
 
 2001-12-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* win/tclWinNotify.c (Tcl_FinalizeNotifier): Stop Tcl on Windows
-	from crashing when shutdown from a non-Tcl thread. Fixes Bug
-	#217982 [orig. 5804] reported by Hugh Vu and Gene Leache.   I'm
-	not convinced that the shutdown process is right even with this,
-	but it was definitely wrong without...
+	* win/tclWinNotify.c (Tcl_FinalizeNotifier): Stop Tcl on Windows from
+	crashing when shutdown from a non-Tcl thread. Fixes [Bug 217982]
+	[orig. 5804] reported by Hugh Vu and Gene Leache. I'm not convinced
+	that the shutdown process is right even with this, but it was
+	definitely wrong without...
 
-2001-12-13  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-12-13  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* win/tclWinSock.c (TcpGetOptionProc): Fix for tcl bug item
-	  #478565 reported by an unknown person. Bypasses all calls to
-	  "gethostbyaddr" for address "0.0.0.0" to prevent delays on
-	  Win/NT.
+	* win/tclWinSock.c (TcpGetOptionProc): Fix for [Bug 478565] reported
+	by an unknown person. Bypasses all calls to "gethostbyaddr" for
+	address "0.0.0.0" to prevent delays on Win/NT.
 
 2001-12-12  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* doc/Preserve.3: doc'd TCL_DYNAMIC use. [Patch #483989] (porter)
+	* doc/Preserve.3: doc'd TCL_DYNAMIC use. [Patch 483989] (porter)
 
-2001-12-12  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-12-12  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* generic/tclIO.c (Tcl_GetsObj): Applied patch for bug #491341 as
-	  provided by Don Porter <dgp@users.sourceforge.net>. Fixes the
-	  assumption of having an empty Tcl_Obj to work with.
+	* generic/tclIO.c (Tcl_GetsObj): Applied patch for [Bug 491341] as
+	provided by Don Porter <dgp@users.sourceforge.net>. Fixes the
+	assumption of having an empty Tcl_Obj to work with.
 
 2001-12-11  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclCompCmds.c:
 	* generic/tclCompile.c:
-	* generic/tclExecute.c: consistency patch, to make all
-	  instructions that pop a variable number of Tcl_Obj's off the
-	  execution stack take the number of popped objects as first
-	  operand. Modified *only* the new instructions
-	  INST_LIST_INDEX_MULTI and INST_LSET_FLAT, so this has no effect
-	  on bytecodes generated up to tcl8.4a3 inclusive.
+	* generic/tclExecute.c: consistency patch, to make all instructions
+	that pop a variable number of Tcl_Obj's off the execution stack take
+	the number of popped objects as first operand. Modified *only* the new
+	instructions INST_LIST_INDEX_MULTI and INST_LSET_FLAT, so this has no
+	effect on bytecodes generated up to tcl8.4a3 inclusive.
 
-	* generic/tclExecute.c: fix debug messages in INST_LSET_LIST. 
+	* generic/tclExecute.c: fix debug messages in INST_LSET_LIST.
 
 	* generic/tclCompCmds.c (TclCompileLindexCmd):
-	* generic/tclCompExpr.c (CompileMathFuncCall): removed the last
-	  two overestimates of the necessary stack depth for bytecodes in
-	  the fix of [Bug 483611].
+	* generic/tclCompExpr.c (CompileMathFuncCall): removed the last two
+	overestimates of the necessary stack depth for bytecodes in the fix of
+	[Bug 483611]
 
-2001-12-10  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-12-10  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* unix/tclUnixPipe.c (TclpCreateProcess): Applied Don Porter's
-	  patch fixing bug #437489.
+	* unix/tclUnixPipe.c (TclpCreateProcess): Applied Don Porter's patch
+	fixing [Bug 437489].
 
 2001-12-10  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclEvent.c:
-	* tests/event.test: fix background error reporting in the absence
-	of a bgerror proc [Bug 219142].
+	* tests/event.test: fix background error reporting in the absence of a
+	bgerror proc [Bug 219142].
 
 2001-12-10  Don Porter <dgp@users.sourceforge.net>
 
@@ -198,7 +188,7 @@
 	* doc/Utf.3:
 	* doc/file.n:
 	* doc/tclsh.1:  Several typo and formatting corrections discovered
-	during conversion to TMML.  Thanks to Joe English.  [Patch 490514]
+	during conversion to TMML. Thanks to Joe English. [Patch 490514]
 	* unix/mkLinks: 'make mklinks'
 
 2001-12-10  Miguel Sofer  <msofer@users.sourceforge.net>
@@ -208,14 +198,14 @@
 	* generic/tclCompile.c:
 	* generic/tclCompile.h:
 	* generic/tclExecute.c:
-	* generic/tclProc.c: fixed the calculation of the maximal stack
-	depth required by bytecodes [Bug 483611].
+	* generic/tclProc.c: fixed the calculation of the maximal stack depth
+	required by bytecodes. [Bug 483611]
 
 2001-12-07  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclVar.c: 
+	* generic/tclVar.c:
 	* tests/trace.test: restored consistency in refCount accounting by
-	array traces [Bug #4484339], submitted by Don Porter. 
+	array traces [Bug 4484339], submitted by Don Porter.
 
 2001-12-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
@@ -225,19 +215,19 @@
 	* generic/tclParseExpr.c (ParsePrimaryExpr): Rewrote to give even
 	better syntax errors in the fairly common case of an identifier
 	without decorations by guessing based on the currently available
-	functions.  Also made messages consistent between memdebug and
-	ordinary builds.
+	functions. Also made messages consistent between memdebug and ordinary
+	builds.
 
 2001-12-05  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclVar.c: 
-	* tests/trace.test: new algorithm for [array get], safe when there
-	are traces that modify the array [Bug #449893]. 
+	* generic/tclVar.c:
+	* tests/trace.test: new algorithm for [array get], safe when there are
+	traces that modify the array. [Bug 449893]
 
 2001-12-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/compExpr-old.test, tests/compExpr.test, tests/compile.test: 
-	* tests/expr-old.test, tests/expr.test, tests/for.test: 
+	* tests/compExpr-old.test, tests/compExpr.test, tests/compile.test:
+	* tests/expr-old.test, tests/expr.test, tests/for.test:
 	* tests/while.test, tests/if.test: Rewrite to handle more specific
 	syntax errors.
 	* tests/parseExpr.test: Rewrite to get rid of dup test numbers and
@@ -246,26 +236,25 @@
 	argument to help explain what the syntax error is.
 	(Tcl_ParseExpr, ParseCondExpr, ParsePrimaryExpr): Added detail
 	messages.
-	(UNKNOWN_CHAR): New lexeme for characters that are always illegal
-	in expressions outside strings.
+	(UNKNOWN_CHAR): New lexeme for characters that are always illegal in
+	expressions outside strings.
 
 2001-12-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/expr.n: Various documentation improvements in relation to
-	the function calls.  Includes fix for Bug #487704 submitted by
-	Devin Eyre.
+	* doc/expr.n: Various documentation improvements in relation to the
+	function calls. Includes fix for [Bug 487704] submitted by Devin Eyre.
 
 2001-12-03  David Gravereaux <davygrvy@pobox.com>
 
 	* win/makefile.vc: Some install target bugs repaired along with
 	$(TCLSTUBLIB) added to the dependencies rather than implicit through
-	the dde and reg extensions which don't happen to always require it
-	for some build types.
+	the dde and reg extensions which don't happen to always require it for
+	some build types.
 
 2001-11-30  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclVar.c: Tcl_Preserve'ing VarTrace structures to avoid 
-	memory corruption. Patch for [Bug: 484334] provided by Don Porter 
+	* generic/tclVar.c: Tcl_Preserve'ing VarTrace structures to avoid
+	memory corruption. Patch for [Bug 484334] provided by Don Porter
 
 2001-11-29  Miguel Sofer  <msofer@users.sourceforge.net>
 
@@ -275,16 +264,15 @@
 2001-11-29  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* tests/namespace.test: added namespace-41.2, a simpler test for
-	[Bug: 231259]
+	[Bug 231259]
 
 2001-11-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* generic/tclBinary.c (BINARY_SCAN_MAX_CACHE, Tcl_BinaryObjCmd,
-	ScanNumber): Added caching scheme to reduce number of object
-	allocations when doing scans of large repetitive binary strings.
-	See comments in file for reasoning behind implementation.
-	Suggested by Miguel Sofer in Patch #429916, but independently
-	implemented.
+	(ScanNumber): Added caching scheme to reduce number of object
+	allocations when doing scans of large repetitive binary strings. See
+	comments in file for reasoning behind implementation. Suggested by
+	Miguel Sofer in [Patch 429916], but independently implemented.
 
 2001-11-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
@@ -293,8 +281,8 @@
 
 2001-11-27  D. Richard Hipp   <drh@hwaci.com>
 
-	* win/tclWinFCmd.c: Fix a coredump in the filename normalizer
-	code for Win95/98.
+	* win/tclWinFCmd.c: Fix a coredump in the filename normalizer code for
+	Win95/98.
 
 2001-11-27  David Gravereaux <davygrvy@pobox.com>
 
@@ -305,37 +293,36 @@
 2001-11-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tests/cmdAH.test (cmdAH-24.2): Made test less sensitive to OS
-	preemption, but perfection isn't practical [Bug 463189, reported
-	by Don Porter.]
+	preemption, but perfection isn't practical. [Bug 463189, reported by
+	Don Porter]
 
-	* tests/switch.test (switch-9.*): Added tests to exercise more of
-	the argument checking.  (switch-7.2,switch-7.3): Test changed
-	behaviour slightly.
-	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): Reworked argument parsing
-	to be stricter about what it accepts.  This should make uses of
-	the [switch] command be more maintainable.  [Bug 475397, reported
-	by Don Porter.]
+	* tests/switch.test (switch-9.*): Added tests to exercise more of the
+	argument checking.  (switch-7.2,switch-7.3): Test changed behaviour
+	slightly.
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): Reworked argument parsing to
+	be stricter about what it accepts. This should make uses of the
+	[switch] command be more maintainable. [Bug 475397, reported by Don
+	Porter]
 
 2001-11-26  Don Porter <dgp@users.sourceforge.net>
 
-	* generic/tclIntPlatDecls.h: 'make genstubs' after changes
-	in 2001-11-23 commit from Daniel Steffen.
+	* generic/tclIntPlatDecls.h: 'make genstubs' after changes in
+	2001-11-23 commit from Daniel Steffen.
 
 2001-11-24  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* unix/Makefile.in: Add comments to better describe
-	TCL_EXE and when it should be available.
-	* win/Makefile.in: Add TCL_EXE variable to be used
-	by rules like `make genstubs`. Don't set TCL_LIBRARY
-	before running `make genstubs` since we will be running
-	with a tclsh from the PATH not the one we build.
+	* unix/Makefile.in: Add comments to better describe TCL_EXE and when
+	it should be available.
+	* win/Makefile.in: Add TCL_EXE variable to be used by rules like `make
+	genstubs`. Don't set TCL_LIBRARY before running `make genstubs` since
+	we will be running with a tclsh from the PATH not the one we build.
 
 2001-11-24  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* win/configure: Regen.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Add comctl32.lib
-	to wish link libs. This change was originally added
-	to Tk on 2001-11-09 but was not committed to Tcl.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Add comctl32.lib to wish link libs.
+	This change was originally added to Tk on 2001-11-09 but was not
+	committed to Tcl.
 
 2001-11-23  Daniel Steffen <das@users.sourceforge.net>
 
@@ -346,17 +333,17 @@
 	* unix/mkLinks.tcl:
 	* unix/tclLoadDyld.c:
 	* unix/tclMtherr.c: Mac OSX support: build system, dynamic code loading
-	and support for case-insensitive filesystems in mkLinks (patch #435258)
+	and support for case-insensitive filesystems in mkLinks. [Patch 435258]
 
 2001-11-23  Daniel Steffen <das@users.sourceforge.net>
 
-	Up-port to 8.4 of mac code changes for 8.3.3 & various new
-	changes for 8.4, some already backported to 8.3.4 (patch #435658)
+	Up-port to 8.4 of mac code changes for 8.3.3 & various new changes for
+	8.4, some already backported to 8.3.4. [Patch 435658]
 
 	* generic/tclObj.c: added #include to fix missing prototype errors
 
 	* generic/tcl.h: MAC_TCL: addition of ConditionalMacros.h and use of
-	DLLIMPORT and DLLEXPORT like on other platforms.  ( => no longer need
+	DLLIMPORT and DLLEXPORT like on other platforms. ( => no longer need
 	the .exp files and can remove use of #pragma export that never worked
 	well)
 	removed line continuation in #if clause as this breaks the mac
@@ -364,10 +351,10 @@
 
 	* mac/tclMacFile.c: fixed bug in permission checking code
 
-	* mac/tclMacLoad.c: corrected utf8 handling, comparison of
-	package names to code fragment names changed to only match on the
-	length of package name, this allows for fragment names with version
-	numbers appended
+	* mac/tclMacLoad.c: corrected utf8 handling, comparison of package
+	names to code fragment names changed to only match on the length of
+	package name, this allows for fragment names with version numbers
+	appended.
 
 	* mac/tclMacInt.h:
 	* generic/tclInt.h:
@@ -402,7 +389,7 @@
 	platforms, removed use of #pragma export.
 
 	* mac/tcltkMacBuildSupport.sea.hqx: new archive of mac build support
-	files & suggested build environment directory hierarchy: 
+	files & suggested build environment directory hierarchy:
 	'Building MacTclTk' & 'CW Pro6 changes' readme's.
 	projects for MoreFiles 1.5.2 static & shared libraries.
 	project & sources for 'pseudoCarbonSupport', see below.
@@ -430,13 +417,13 @@
 	Highly experimental "pseudoCarbon" support for Tcl only on OS 8/9:
 	binaries in "Build:(Carbon):" link against CarbonLib instead of
 	InterfaceLib, however the actual code has not been carbonized! i.e. it
-	will not run on OSX and may not even run properly with CarbonLib. 
+	will not run on OSX and may not even run properly with CarbonLib.
 	This should in principle allow you to build & test OS9 CFM Carbon
-	binaries that need to link with Tcl.shlb.  On OSX you can use the
+	binaries that need to link with Tcl.shlb. On OSX you can use the
 	native Tcl.framework, but you have to build a MachO binary as there
 	is no CFM glue lib for Tcl.framework.
-	the library pseudoCarbonSupport.shlb manually loads the symbols
-	from InterfaceLib that are not in CarbonLib but are needed by the
+	the library pseudoCarbonSupport.shlb manually loads the symbols from
+	InterfaceLib that are not in CarbonLib but are needed by the
 	uncarbonized code in Tcl.shlb and TclShell.
 
 	* generic/tclMain.c: MAC_TCL: workaround for broken/non-standard isatty
@@ -461,10 +448,10 @@
 	strings; updated version strings to standard usage; added support for
 	'(Support Libraries)' subfolder for shared runtime libraries in
 	unmerged binaries; commented out demo setting of "Tcl Environment
-	Variables"; reorganized resources among these files to avoid 
-	multiple copies in applications and shared libraries, the script
-	libraries are now no longer duplicated in Tclsh but are only included 
-	in the resources of Tcl.shlb.
+	Variables"; reorganized resources among these files to avoid multiple
+	copies in applications and shared libraries, the script libraries are
+	now no longer duplicated in Tclsh but are only included in the
+	resources of Tcl.shlb.
 
 	* mac/tclMacChan.c:
 	* mac/tclMacSock.c: cast for *BlockMode
@@ -497,52 +484,51 @@
 	* mac/tclMacUnix.c: added missing (Tcl_Obj ***) cast to
 	Tcl_ListObjGetElements call
 
-	* mac/tclMacAlloc.c: modernized TclpSysAlloc() to use temporary
-	memory instead of system heap memory when available (MacOS
-	>= 7.5 and possibly earlier, use of system heap has been
-	discouraged for a long time and has many disadvantages, e.g. memory
-	isn't paged out, and errors can very easily bring the system down);
-	fixed crashing bug in TclpSysRealloc() and CleanUpExitProc() where
-	memory was being accessed after having been deallocated; fixed
-	memory leak in (de)allocation code (for every block ever allocated
-	with TclpSysAlloc, a Ptr was leaked), if temporary memory is
-	available, don't track allocated memory, instead use
-	RecoverHandle() to get Handle from Ptr, otherwise use doubly linked
-	list to correctly track memory and free all allocated memory; added
-	new option for ConfigureMemory: MEMORY_DONT_USE_TEMPMEM, disables
-	use of temporary memory even when it would be available, only
-	necessary when writing e.g. a driver (using tcl??); increased
-	fraction of application heap reserved for OS routines to 512K
-
-	* compat/strftime.c: 
+	* mac/tclMacAlloc.c: modernized TclpSysAlloc() to use temporary memory
+	instead of system heap memory when available (MacOS >= 7.5 and
+	possibly earlier, use of system heap has been discouraged for a long
+	time and has many disadvantages, e.g. memory isn't paged out, and
+	errors can very easily bring the system down); fixed crashing bug in
+	TclpSysRealloc() and CleanUpExitProc() where memory was being accessed
+	after having been deallocated; fixed memory leak in (de)allocation
+	code (for every block ever allocated with TclpSysAlloc, a Ptr was
+	leaked), if temporary memory is available, don't track allocated
+	memory, instead use RecoverHandle() to get Handle from Ptr, otherwise
+	use doubly linked list to correctly track memory and free all
+	allocated memory; added new option for ConfigureMemory:
+	MEMORY_DONT_USE_TEMPMEM, disables use of temporary memory even when it
+	would be available, only necessary when writing e.g. a driver (using
+	tcl??); increased fraction of application heap reserved for OS
+	routines to 512K
+
+	* compat/strftime.c:
 	* mac/tclMacTime.c:
 	* mac/tclMacPort.h:
-	* generic/tclInt.decls: 
+	* generic/tclInt.decls:
 	* generic/tclIntPlatDecls.h:
-	* generic/tclStubInit.c: timezone support for mac via 
-	TclpGetTZName() like on windows, using an inverse timezone table
-	adapted from tclDate.c to map gmtoffset in seconds gotten from
-	the MacOS APIs to a  timezone string, as there is no good way to get
-	this info from MacOS. I had to make up some unusual timezones and
-	arbitrarily decide on the most standard of the multiple choices
-	available for every timezone.
-
-	* generic/tclExecute.c: workaround for a MSL bug/misfeature: for
-	very small floats, MSL can return errno ERANGE but a
-	non-zero value ( < LDBL_MIN however)
-	
-	* mac/tclMacAppInit.c: support for WASTE text library using
-	temporary memory, setting has no effect if WASTE is not used.
-	
+	* generic/tclStubInit.c: timezone support for mac via TclpGetTZName()
+	like on windows, using an inverse timezone table adapted from
+	tclDate.c to map gmtoffset in seconds gotten from the MacOS APIs to a
+	timezone string, as there is no good way to get this info from MacOS.
+	I had to make up some unusual timezones and arbitrarily decide on the
+	most standard of the multiple choices available for every timezone.
+
+	* generic/tclExecute.c: workaround for a MSL bug/misfeature: for very
+	small floats, MSL can return errno ERANGE but a non-zero value (<
+	LDBL_MIN however)
+
+	* mac/tclMacAppInit.c: support for WASTE text library using temporary
+	memory, setting has no effect if WASTE is not used.
+
 	* mac/tclMacPanic.c: removed duplicate code from generic/tclPanic.c
 	and added that file to projects instead.
 
 	* tests/all.tcl: set tcltest::singleProcess 1 as multiple processes
 	are not available on the mac.
-	
-	* tests/cmdAH.test: access time not available on the mac, skip the 
+
+	* tests/cmdAH.test: access time not available on the mac, skip the
 	atime touch test
-	
+
 	* tests/appendComp.test:
 	* tests/cmdMZ.test:
 	* tests/compile.test:
@@ -550,20 +536,20 @@
 	* tests/fileName.test:
 	* tests/lset.test:
 	* tests/namespace.test:
-	* tests/tcltest.test: added missing cleanups/tests/catches that
-	caused tests to fail on the mac.
+	* tests/tcltest.test: added missing cleanups/tests/catches that caused
+	tests to fail on the mac.
 
 	* doc/tclvars.n: doc bug, env(PWD) should be env(HOME) [Bug 463834]
-	
+
 2001-11-21  Don Porter	<dgp@users.sourceforge.net>
 
 	* tests/trace.test (trace-8.8): Corrected test for Bug 219393.
 
 	* generic/tclBasic.c (Tcl_DeleteCommandFromToken,CallCommandTraces):
 	* generic/tclCmdMZ>c (Tcl_UntraceCommand):  Added Tcl_Preserve and
-	Tcl_Release calls to prevent deletion of CommandTrace structures
-	until all callers are done using them, preventing memory corruption.
-	[Bug 453805]
+	Tcl_Release calls to prevent deletion of CommandTrace structures until
+	all callers are done using them, preventing memory corruption. [Bug
+	453805]
 
 2001-11-20  Kevin B. Kenny  <kennykb@users.sourceforge.net>
 
@@ -575,7 +561,7 @@
 	* generic/tclUtil.c (TclpGetTime):
 	* generic/tclTest.c (GetTimesCmd):
 	* generic/tclTimer.c (Tcl_CreateTimerHandler, TimerSetupProc,
-	TimerCheckProc, TimerHandlerEventProc):
+	(TimerCheckProc, TimerHandlerEventProc):
 	* mac/tclMacNotify.c (Tcl_SetTimer):
 	* mac/tclMacShLib.exp (Tcl_GetTime):
 	* mac/tclMacTime.c (Tcl_GetTime):
@@ -586,72 +572,72 @@
 	* win/tclWinNotify.c (Tcl_Sleep):
 	* win/tclWinTest.c (TestwinclockCmd):
 	* win/tclWinTime.c (TclpGetSeconds, TclpGetClicks, Tcl_GetTime):
-	Changed all uses of TclpGetTime to Tcl_GetTime.  Added Tcl_GetTime
-	to the Stubs table and the library documentation.  Added a
-	TclpGetTime in tclUtil.c for backward compatibility of
-	extensions. [Patch #483500, TIP#73]
+	Changed all uses of TclpGetTime to Tcl_GetTime. Added Tcl_GetTime to
+	the Stubs table and the library documentation. Added a TclpGetTime in
+	tclUtil.c for backward compatibility of extensions. [Patch 483500,
+	TIP#73]
 
 	* generic/tclCmdMZ.c (Tcl_TimeObjCmd): Corrected an error in the
 	[time] command that caused incorrect results to be returned if the
-	total duration of all iterations exceeded 2**31 microseconds.
-	[Bug #478847]
+	total duration of all iterations exceeded 2**31 microseconds. [Bug
+	478847]
 
 	* generic/tclInt.decls:
 	* generic/tclInt.h:
 	* generic/tclStubInit.h: Reran 'make genstubs'
-	
+
 2001-11-20  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclBasic.c
-	* generic/tclCompile.h: 
+	* generic/tclCompile.h:
 	* generic/tclExecute.c: moving all code relative to bytecodes from
 	tclBasic.c to tclExecute.c - the functions RecordTracebackInfo and
 	Tcl_ExprObj went to tclExecute.c, and new interface function was
 	defined (TclCompEvalObj).
-	The final objective of this sequence of moves is to provide a
-	clean, clear-cut interface between Tcl's core and the
-	compiler/engine subsystem.  
+	The final objective of this sequence of moves is to provide a clean,
+	clear-cut interface between Tcl's core and the compiler/engine
+	subsystem.
 
 2001-11-20  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclBasic.c
-	* generic/tclCompile.h: 
+	* generic/tclCompile.h:
 	* generic/tclExecute.c: factoring out of common code in tclBasic.c
-	(new function TclInterpReady defined: it resets the interp's
-	result, then checks that it hasn't been deleted and that the
-	nesting level is acceptable). Passed the responsibility of calling
-	it to the *callers* of TclEvalObjvInternal.
+	(new function TclInterpReady defined: it resets the interp's result,
+	then checks that it hasn't been deleted and that the nesting level is
+	acceptable). Passed the responsibility of calling it to the *callers*
+	of TclEvalObjvInternal.
 
 2001-11-20  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclBasic.c
 	* generic/tclExecute.c: a better variant of the previous-to-last
-	commit (restoring numLevels computations). The managing of the
-	levels now has to be done by the *callers* of TclEvalObjvInternal  
+	commit (restoring numLevels computations). The managing of the levels
+	now has to be done by the *callers* of TclEvalObjvInternal
 
 2001-11-20  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclExecute.c: missing variable declaration under
-	TCL_COMPILE_DEBUG. 
+	TCL_COMPILE_DEBUG.
 
 2001-11-20  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclExecute.c:
-	* generic/tclProc.c: restoring the computations of iPtr->numLevels
-	to the original logic (previous to buggy modifs on 2001-11-16).
+	* generic/tclProc.c: restoring the computations of iPtr->numLevels to
+	the original logic (previous to buggy modifs on 2001-11-16).
 
 2001-11-20  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tools/eolFix.tcl (new-file):
 	* unix/Makefile.in: added EOL correction for Windows bat files to
-	dist target. [Bug #219409] (davygrvy)
+	dist target. [Bug 219409] (davygrvy)
 
-	* unix/tclUnixInit.c (TclpSetInitialEncodings): update of patch
-	from 2001-11-16 that uses the old Tcl encoding check mechanism as
-	a fallback to the original.  Also added a TCL_DEFAULT_ENCODING
-	#define (defaults to iso8859-1).  Tcl will first try setlocale and
-	nl_langinfo, and if that fails, guess based on certain LANG|LC_*
-	env vars. [Patch #418645]
+	* unix/tclUnixInit.c (TclpSetInitialEncodings): update of patch from
+	2001-11-16 that uses the old Tcl encoding check mechanism as a
+	fallback to the original. Also added a TCL_DEFAULT_ENCODING #define
+	(defaults to iso8859-1). Tcl will first try setlocale and nl_langinfo,
+	and if that fails, guess based on certain LANG|LC_* env vars. [Patch
+	418645]
 
 2001-11-19  David Gravereaux <davygrvy@pobox.com>
 
@@ -667,42 +653,42 @@
 	* win/tclWinFCmd.c:
 	* win/tclWin32Dll.c:
 	* doc/file.n:
-	* tests/winFCmd.test: improved speed of file normalization
-	for Win95/98, and clarified docs on differences in file
-	normalization between NT/2000 and the older operating systems.
-	Added test to ensure normalization is correct.
-	
+	* tests/winFCmd.test: improved speed of file normalization for
+	Win95/98, and clarified docs on differences in file normalization
+	between NT/2000 and the older operating systems. Added test to ensure
+	normalization is correct.
+
 2001-11-19  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclBasic.c:
 	* generic/tclParse.c: Code reorganisation. Moved all evaluation
-	functions from tclParse.c to tclBasic.c, so that now tclParse.c
-	deals exclusively with parsing and all evaluations are done by
-	code in tclBasic.c. The functions moved are: TclEvalObjvInternal,
+	functions from tclParse.c to tclBasic.c, so that now tclParse.c deals
+	exclusively with parsing and all evaluations are done by code in
+	tclBasic.c. The functions moved are: TclEvalObjvInternal,
 	Tcl_EvalObjv, Tcl_LogCommandInfo, Tcl_EvalTokensStandard,
 	Tcl_EvalTokens, Tcl_EvalEx, Tcl_Eval, Tcl_EvalObj and
-	Tcl_GlobalEvalObj. 
+	Tcl_GlobalEvalObj.
 
 2001-11-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/trace.test (trace-8.8): Added adapted version of Bug
-	#219393 as new test; the test won't reliably show up the old
-	problem unless it is being run under something like Purify, but
-	something is better than nothing...
+	* tests/trace.test (trace-8.8): Added adapted version of [Bug 219393]
+	as new test; the test won't reliably show up the old problem unless it
+	is being run under something like Purify, but something is better than
+	nothing...
 
 	* generic/tclVar.c (Tcl_TraceVar2, Tcl_UntraceVar2): Added missing
 	mask bits for trace result type and a check for a nonsense flag
 	combination.
-	* generic/tclCmdMZ.c (TraceVarProc): Added missing test for NULL
-	when deleting a trace that doesn't cause an error.
+	* generic/tclCmdMZ.c (TraceVarProc): Added missing test for NULL when
+	deleting a trace that doesn't cause an error.
 
 	* doc/TraceVar.3: Added documentation for change due to TIP#68.
 
-	* generic/tclCmdMZ.c (TraceVarInfo): Removed problematic errMsg
-	field from structure.
+	* generic/tclCmdMZ.c (TraceVarInfo): Removed problematic errMsg field
+	from structure.
 	(TraceVarProc): Removed references to errMsg field and changed
 	handling of errors so that they returned a Tcl_Obj* containing the
-	error string.  This minimizes the number of calls to the memory
+	error string. This minimizes the number of calls to the memory
 	management subsystem.
 	(TclTraceCommandObjCmd, TraceCommandProc): Removed references to
 	errMsg field which was never used in command traces in any case.
@@ -710,14 +696,14 @@
 	errMsg field and made variable traces register with
 	TCL_TRACE_RESULT_OBJECT bit set.
 
-	* generic/tcl.h (TCL_TRACE_RESULT_DYNAMIC,TCL_TRACE_RESULT_OBJECT): 
-	New constants to define how to handle the strings returned from
-	trace callbacks [TIP#68]
+	* generic/tcl.h (TCL_TRACE_RESULT_DYNAMIC,TCL_TRACE_RESULT_OBJECT):
+	New constants to define how to handle the strings returned from trace
+	callbacks [TIP#68]
 	* generic/tclVar.c (CallTraces, Tcl_GetVar2Ex, TclGetIndexedScalar,
-	TclGetElementOfIndexedArray, Tcl_SetVar2Ex, TclSetIndexedScalar,
-	TclSetElementOfIndexedArray, Tcl_UnsetVar2, Tcl_ArrayObjCmd,
-	TclDeleteVars, TclDeleteCompiledLocalVars, DeleteArray,
-	TclVarTraceExists): Support for those new trace flags.
+	(TclGetElementOfIndexedArray, Tcl_SetVar2Ex, TclSetIndexedScalar,
+	(TclSetElementOfIndexedArray, Tcl_UnsetVar2, Tcl_ArrayObjCmd,
+	(TclDeleteVars, TclDeleteCompiledLocalVars, DeleteArray,
+	(TclVarTraceExists): Support for those new trace flags.
 
 2001-11-19  Miguel Sofer  <msofer@users.sourceforge.net>
 
@@ -725,14 +711,14 @@
 
 2001-11-16  Kevin B. Kenny  <kennykb@users.sourceforge.net>
 
-	* generic/tclListObj.c: removed a C++-style comment that
-	  was inadvertently left in the source code.
+	* generic/tclListObj.c: removed a C++-style comment that was
+	inadvertently left in the source code.
 
 2001-11-16  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* tests/interp.test: 
-	* generic/tclInterp.c (SlaveObjCmd): Corrected argument checking
-	for '$interp alias|aliases|issafe'. [Patch #479560] (thoyts, hobbs)
+	* tests/interp.test:
+	* generic/tclInterp.c (SlaveObjCmd): Corrected argument checking for
+	'$interp alias|aliases|issafe'. [Patch 479560] (thoyts, hobbs)
 
 	* unix/tclUnixInit.c: added HAVE_LANGINFO code block.
 	* unix/configure: regened
@@ -740,17 +726,17 @@
 	* unix/tcl.m4: made SHLIB_LD_LIBS='${LIBS}' for FreeBSD* (meyer)
 	Added modified version of Wagner patch to make use of nl_langinfo
 	where possible to determine Unix platform encoding, instead of the
-	inflexible built-in system.  This is used by default when
-	possible, and can be disabled with --enable-langinfo=no.
-	[Patch #418645] (hobbs, wagner)
+	inflexible built-in system. This is used by default when possible, and
+	can be disabled with --enable-langinfo=no. [Patch 418645] (hobbs,
+	wagner)
 
 2001-11-16  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclCompile.h:
 	* generic/tclExecute.c:
-	* generic/tclObj.c: moved Tcl_GetCommandFromObj and all defining
-	code for tclCmdNameType objects to tclObj.c (from tclExecute.c). 
-	This code has nothing to do with bytecodes.
+	* generic/tclObj.c: moved Tcl_GetCommandFromObj and all defining code
+	for tclCmdNameType objects to tclObj.c (from tclExecute.c). This code
+	has nothing to do with bytecodes.
 
 2001-11-16  Miguel Sofer  <msofer@users.sourceforge.net>
 
@@ -760,18 +746,17 @@
 	* generic/tclParse.c:
 	* generic/tclProc.c:
 	* tests/stack.test: consolidation of duplicated code (in
-	TclExecuteByteCode and EvalObjv); renaming of EvalObjv to
-	TclEvalObjv as it is not static anymore; restored consistency of
-	level counts between compiled and directly evaled code.
-	[Bug 480896]
+	TclExecuteByteCode and EvalObjv); renaming of EvalObjv to TclEvalObjv
+	as it is not static anymore; restored consistency of level counts
+	between compiled and directly evaled code. [Bug 480896]
 
 2001-11-12  David Gravereaux <davygrvy@pobox.com>
 
 	* win/makefile.vc:
 	* win/rules.vc:  Small bug fixes.
 
-	* win/README: added some docs pointing to the docs in makefile.vc
-	for it's use.
+	* win/README: added some docs pointing to the docs in makefile.vc for
+	it's use.
 
 2001-10-17  Kevin B. Kenny  <kennykb@users.sourceforge.net>
 
@@ -806,17 +791,17 @@
 	* tests/obj.test:
 	* tests/string.test:
 	* tests/stringComp.test:
-	Reference implementation of TIP's #22, #33 and #45.  Adds the
-	ability of the [lindex] command to have multiple index arguments,
-	and adds the [lset] command.  Both commands are byte-code compiled.
-	[Patch #471874] (work by Kenny, commited by Hobbs)
+	Reference implementation of TIP's #22, #33 and #45. Adds the ability
+	of the [lindex] command to have multiple index arguments, and adds the
+	[lset] command. Both commands are byte-code compiled. [Patch 471874]
+	(work by Kenny, commited by Hobbs)
 
 2001-11-12  David Gravereaux <davygrvy@pobox.com>
 
 	* win/buildall.vc.bat(new):
 	* win/makefile.vc:  Small fix with deriving the "OriginalFilename"
-	string in the .rc scripts.  Added a quick batchfile for building
-	the entire thing.
+	string in the .rc scripts. Added a quick batchfile for building the
+	entire thing.
 
 2001-11-12  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -827,8 +812,8 @@
 2001-11-10  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/Makefile.in:
-	* win/Makefile.in: Add "make gdb" target. This target
-	can run tclsh inside either gdb or insight.
+	* win/Makefile.in: Add "make gdb" target. This target can run tclsh
+	inside either gdb or insight.
 
 2001-11-10  David Gravereaux <davygrvy@pobox.com>
 
@@ -837,20 +822,19 @@
 
 	* win/mkd.bat:
 	* win/rmd.bat:  Changes from Llyod Lim for better stability.
-	[Patch #456759]
+	[Patch 456759]
 
 2001-11-09  David Gravereaux <davygrvy@pobox.com>
 
 	* win/makefile.vc:
-	* win/tcl.dsp:  winhelp target fixes for non-NT systems.  It
-	seems NMAKE under these remembers changed directories during
-	commands.   A new tcltest feature from Peter Spjuth 
-	<peter.spjuth@space.se> to specify a pattern file from the
-	commandline and redirecting output to a file when not under
-	NT with it's scrollback console.  Then it replays it, piped
-	through more.  Added 2 new static "configurations" to tcl.dsp.
-	I could keep adding more, but I think we should leave it up to
-	the user for customizing it.
+	* win/tcl.dsp:  winhelp target fixes for non-NT systems. It seems
+	NMAKE under these remembers changed directories during commands. A new
+	tcltest feature from Peter Spjuth <peter.spjuth@space.se> to specify a
+	pattern file from the commandline and redirecting output to a file
+	when not under NT with it's scrollback console. Then it replays it,
+	piped through more. Added 2 new static "configurations" to tcl.dsp.
+	I could keep adding more, but I think we should leave it up to the
+	user for customizing it.
 
 	Sticky-points left:  'profile' option.
 
@@ -860,9 +844,9 @@
 	* doc/StdChannels.3:
 	* doc/file.n:
 	* doc/tcltest.n:
-	* tools/man2help.tcl: 
+	* tools/man2help.tcl:
 	* tools/man2help2.tcl: fixed winhelp generation problems
-	[Patch #480268]
+	[Patch 480268]
 
 	* unix/configure:
 	* unix/tcl.m4: added -lc to AIX libs, fixed path to ldAix
@@ -870,68 +854,64 @@
 2001-11-09  Don Porter	<dgp@users.sourceforge.net>
 
 	* tests/var.test:
-	* generic/tclVar.c: Corrected bug in [global] when dealing
-	with variable names matching :*.  [Bug 480176]
+	* generic/tclVar.c: Corrected bug in [global] when dealing with
+	variable names matching :*. [Bug 480176]
 
 2001-11-08  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	Fixup stack size under OSF1. [Tcl patch 474790]
+	Fixup stack size under OSF1. [Patch 474790]
 
 	* unix/configure: Regen.
-	* unix/tcl.m4: Add HAVE_PTHREAD_ATTR_SETSTACKSIZE define
-	to EXTRA_CFLAGS to adjust initial stack size.
+	* unix/tcl.m4: Add HAVE_PTHREAD_ATTR_SETSTACKSIZE define to
+	EXTRA_CFLAGS to adjust initial stack size.
 
 2001-11-08  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	Enable thread support under FreeBSD. [Tcl bug 473708]
+	Enable thread support under FreeBSD. [Bug 473708]
 
 	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_ENABLE_THREADS): Check for pthread functions
-	in libc_r and enable thread support if found.
-	* unix/dltest/Makefile.in: Set SHLIB_LD_LIBS and use it in
-	the Makefile to properly link a shared library.
+	* unix/tcl.m4 (SC_ENABLE_THREADS): Check for pthread functions in
+	libc_r and enable thread support if found.
+	* unix/dltest/Makefile.in: Set SHLIB_LD_LIBS and use it in the
+	Makefile to properly link a shared library.
 
 2001-11-08  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/Makefile.in:
-	* unix/dltest/Makefile.in:
-	Avoid adding libc to the LIBS variable since it
-	is not needed when linking with CC. If required
-	when linking with LD it should be done on a case
-	by case basis in tcl.m4.
+	* unix/dltest/Makefile.in: Avoid adding libc to the LIBS variable
+	since it is not needed when linking with CC. If required when linking
+	with LD it should be done on a case by case basis in tcl.m4.
 
 2001-11-08  David Gravereaux <davygrvy@pobox.com>
 
 	* win/rules.vc:
-	* win/makefile.vc:  Fixed install target to adjust for the
-	different build types.  Added a 'linkexten' option to link the
-	win extensions inside the shell when built static.  Placed
-	win/tclAppInit.c patch in SF patch DB for approval. 'profile'
-	option not hooked in yet.  Everything else know is done.
+	* win/makefile.vc:  Fixed install target to adjust for the different
+	build types. Added a 'linkexten' option to link the win extensions
+	inside the shell when built static. Placed win/tclAppInit.c patch in
+	SF patch DB for approval. 'profile' option not hooked in yet.
+	Everything else know is done.
 
 	* win/tcl.dsp(new):
 	* win/tcl.dsw(new):  Simple MsDev stub project files that calls
-	makefile.vc.  Will help run Tcl in the debugger easier without
+	makefile.vc. Will help run Tcl in the debugger easier without
 	confusing MsDev for where the .pdb files are.
 
 2001-11-07  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/Makefile.in:
-	* win/Makefile.in:
-	Print a message indicating that the user should
-	run "make genstubs" when the generated tclStubInit.c
-	file is out of date. We can't regenerate automatically
-	since there may be no tclsh on the system and that
-	would cause bootstrap problems. [Tcl bug 465874]
+	* win/Makefile.in: Print a message indicating that the user should run
+	"make genstubs" when the generated tclStubInit.c file is out of date.
+	We can't regenerate automatically since there may be no tclsh on the
+	system and that would cause bootstrap problems. [Bug 465874]
 
 2001-11-07  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	Define TCL_INCLUDE_SPEC in tclConfig.sh. It should be
-	included by extensions that need to find Tcl include
-	headers in the install location. The user can override
-	the include install dir with --includedir so we need
-	to record this information for extensions. [Tcl bug 421835]
-	
+	Define TCL_INCLUDE_SPEC in tclConfig.sh. It should be included by
+	extensions that need to find Tcl include headers in the install
+	location. The user can override the include install dir with
+	--includedir so we need to record this information for extensions.
+	[Bug 421835]
+
 	* unix/configure: Regen.
 	* unix/configure.in: Define TCL_INCLUDE_SPEC.
 	* unix/tclConfig.sh.in: Define TCL_INCLUDE_SPEC.
@@ -942,45 +922,41 @@
 2001-11-07  David Gravereaux <davygrvy@pobox.com>
 
 	* win/rules.vc:
-	* win/makefile.vc: Dropped the NOMSVCRT macro and put it on the
-	option list instead.  It makes more sense to me this way as
-	NOMSVCRT=0 would only be the valid setting.  Fixed the dde and reg
-	extension for building static.  Improved, but not perfected, the
-	winhelp target.
+	* win/makefile.vc: Dropped the NOMSVCRT macro and put it on the option
+	list instead. It makes more sense to me this way as NOMSVCRT=0 would
+	only be the valid setting. Fixed the dde and reg extension for
+	building static. Improved, but not perfected, the winhelp target.
 
 2001-11-07  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* win/README: Change minimum VC++ version to 5.X since
-	4.X is known not to work.
-	Indicate that Mingw is required and building with Cygwin
-	gcc is not supported. Include instructions that indicate
-	how to install Mingw and what URLs folks should use to
-	download the supported version of Mingw.
+	* win/README: Change minimum VC++ version to 5.X since 4.X is known
+	not to work.
+	Indicate that Mingw is required and building with Cygwin gcc is not
+	supported. Include instructions that indicate how to install Mingw and
+	what URLs folks should use to download the supported version of Mingw.
 	* win/configure: Regen.
-	* win/configure.in: Error out if user tries to compile the
-	Windows version of Tcl with Cygwin gcc. Users should compile
-	with Mingw gcc instead.
+	* win/configure.in: Error out if user tries to compile the Windows
+	version of Tcl with Cygwin gcc. Users should compile with Mingw gcc
+	instead.
 
-2001-11-06  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-11-06  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* generic/tclIO.c (ReadChars): Fixed bug #478856 reported by
-	  Stuart Cassoff <stwo@users.sourceforge.net>. The bug caused loss
-	  of fileevents when [read]ing less data from the channel than
-	  buffered. Due to an empty input buffer the flag
-	  CHANNEL_NEED_MORE_DATA was set but never reset, causing the I/O
-	  system to wait for more data instead of using a timer to
-	  synthesize fileevents and to flush the pending data out of the
-	  buffers.
+	* generic/tclIO.c (ReadChars): Fixed [Bug 478856] reported by Stuart
+	Cassoff <stwo@users.sourceforge.net>. The bug caused loss of
+	fileevents when [read]ing less data from the channel than buffered.
+	Due to an empty input buffer the flag CHANNEL_NEED_MORE_DATA was set
+	but never reset, causing the I/O system to wait for more data instead
+	of using a timer to synthesize fileevents and to flush the pending
+	data out of the buffers.
 
 2001-11-06  David Gravereaux <davygrvy@pobox.com>
 
 	* win/rules.vc (new):
 	* win/makefile.vc:  Complete over/under rewrite to support numerous
-	build options all from the commandline itself without needing to
-	edit the makefile.  Now requires vcvars32.bat to be run prior to
-	running nmake for bootstraping the environment.  Fully doc'd usage
-	for it is in makefile.vc.  Commentary welcome.  Sticky points left
-	are:
+	build options all from the commandline itself without needing to edit
+	the makefile. Now requires vcvars32.bat to be run prior to running
+	nmake for bootstraping the environment. Fully doc'd usage for it is in
+	makefile.vc. Commentary welcome. Sticky points left are:
 
 	1) winhelp target shows errors in the converting script.
 	2) .rc scripts aren't getting the right #defines to build the correct
@@ -992,158 +968,153 @@
 
 2001-11-04  Vince Darley  <vincentdarley@users.sourceforge.net>
 
-	* library/init.tcl: made filesystem fallback proc
-	::tcl::CopyDirectory more robust to vagaries of non-native
-	filesystems.
-	
+	* library/init.tcl: made filesystem fallback proc ::tcl::CopyDirectory
+	more robust to vagaries of non-native filesystems.
+
 2001-11-02  Vince Darley  <vincentdarley@users.sourceforge.net>
 
 	* doc/file.n:
-	* generic/tclIOUtil.c: updated documentation and comments
-	to clarify behaviour of 'file copy' wrt soft links.
-	
+	* generic/tclIOUtil.c: updated documentation and comments to clarify
+	behaviour of 'file copy' wrt soft links.
+
 2001-10-29  Vince Darley  <vincentdarley@users.sourceforge.net>
 
-	* win/tclWinFile.c: fix to '-types {f r}' bug in
-	TclpMatchInDirectory (which could cause a UMR, as well as
-	returning wrong results).  Also improved API for 'stat'
-	to resolve [Bug#219258].
+	* win/tclWinFile.c: fix to '-types {f r}' bug in TclpMatchInDirectory
+	(which could cause a UMR, as well as returning wrong results). Also
+	improved API for 'stat' to resolve [Bug 219258].
 	* win/tclWin32Dll.c
-	* win/tclWinInt.h: addition of improved stat API to internal 
-	lookup table.
+	* win/tclWinInt.h: addition of improved stat API to internal lookup
+	table.
 	* tests/fileName.test: two new tests for the above bug.
 	* generic/tclIOUtil.c: some cleanup of comments and #ifdefs
-	
+
 2001-10-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* unix/tclUnixFile.c (TclpMatchInDirectory): Argument to access()
-	was entryPtr->d_name instead of nativeEntry which failed when
-	trying to check access for files in other than the current
-	directory. [Bug 475941, reported by Georgios Petasis]
+	* unix/tclUnixFile.c (TclpMatchInDirectory): Argument to access() was
+	entryPtr->d_name instead of nativeEntry which failed when trying to
+	check access for files in other than the current directory. [Bug
+	475941, reported by Georgios Petasis]
 
 2001-10-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* unix/tclUnixChan.c: Added stateUpdated member to struct TtyState.
-	(TtyCloseProc,TtySetOptionProc,TtyInit): Use stateUpdated member
-	of TtyState to decide whether it is necessary to reset a serial
-	port when Tcl closes it.  Blindly resetting can cause Tcl to be
-	sent an unexpected SIGTSTP when it is executing in the background
-	[Bug 471374, reported by Chris Nelson]
+	(TtyCloseProc,TtySetOptionProc,TtyInit): Use stateUpdated member of
+	TtyState to decide whether it is necessary to reset a serial port when
+	Tcl closes it. Blindly resetting can cause Tcl to be sent an
+	unexpected SIGTSTP when it is executing in the background [Bug 471374,
+	reported by Chris Nelson]
 
-2001-10-22  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-10-22  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* doc/ObjectType.3: Minor documentation fix, reported by David
-	  N. Welton <davidw@users.sourceforge.net> directly to me.
+	* doc/ObjectType.3: Minor documentation fix, reported by David N.
+	Welton <davidw@users.sourceforge.net> directly to me.
 
 2001-10-22  Vince Darley  <vincentdarley@users.sourceforge.net>
 
-	* win/tclWinFCmd.c: fix to stop test suite from hanging process
-	under some versions of WinNT. [Bug #466102] (Kevin Kenny)
-	
+	* win/tclWinFCmd.c: fix to stop test suite from hanging process under
+	some versions of WinNT. [Bug 466102] (Kevin Kenny)
+
 2001-10-18  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* tests/clock.test (clock-8.1): 
-	* generic/tclDate.c (RelativeMonth): 
-	* generic/tclGetDate.y (RelativeMonth): corrected off-by-one-day
-	error in clock scan with relative months and years during swing
-	hours. [Bug #413397, Patch #414024] (lavana)
+	* tests/clock.test (clock-8.1):
+	* generic/tclDate.c (RelativeMonth):
+	* generic/tclGetDate.y (RelativeMonth): corrected off-by-one-day error
+	in clock scan with relative months and years during swing hours. [Bug
+	413397, Patch 414024] (lavana)
 
 2001-10-18  Vince Darley  <vincentdarley@users.sourceforge.net>
 
-	* generic/tclIOUtil.c: fix to bug in Tcl_FSChdir shown up
-	by recent tclkit builds.
+	* generic/tclIOUtil.c: fix to bug in Tcl_FSChdir shown up by recent
+	tclkit builds.
 
 2001-10-17  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* unix/tclUnixPipe.c (PipeInputProc, PipeOutputProc): do immediate
-	retry when error is returned with errno == EINTR.
-	[Bug #415131] (leger)
+	retry when error is returned with errno == EINTR. [Bug 415131] (leger)
 
 2001-10-16  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* unix/tclLoadAout.c (TclGuessPackageName): removed unused vars
-	and fixed warnings. [Bug #446622] (lim)
+	* unix/tclLoadAout.c (TclGuessPackageName): removed unused vars and
+	fixed warnings. [Bug 446622] (lim)
 
 2001-10-15  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclProc.c: changing a memcmp to strncmp to avoid a memory
-	error detected by purify (thanks Jeff); modify style to agrre with
-	the style guide. 
-	
-2001-10-15  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+	error detected by purify (thanks Jeff); modify style to agrre with the
+	style guide.
+
+2001-10-15  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* generic/tclInt.decls (TclExpandCodeArray,TclGetInstructionTable):
-	  Added to internal stubs table. Tclcompiler (Tclpro project)
-	  needs them if used as loadable package under Windows. Changed
-	  signatures. We don't want to describe compiler internal
-	  structures in "tclInt.h".
+	Added to internal stubs table. Tclcompiler (Tclpro project) needs them
+	if used as loadable package under Windows. Changed signatures. We
+	don't want to describe compiler internal structures in "tclInt.h".
 
 	* generic/tclCompile.h: S.a. Removed function declarations.
 	* generic/tclCompile.c: S.a. Adapted to changed signatures.
 
 2001-10-15  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* unix/configure: 
-	* unix/configure.in: 
-	* win/configure: 
-	* win/configure.in: 
-	* win/tcl.m4: reworked to be a little cleaner in comparison to
-	each other, and to AC_SUBST even empty vars for win/tclConfig.sh
+	* unix/configure:
+	* unix/configure.in:
+	* win/configure:
+	* win/configure.in:
+	* win/tcl.m4: reworked to be a little cleaner in comparison to each
+	other, and to AC_SUBST even empty vars for win/tclConfig.sh
 
 	* generic/tclFileName.c: minor code cleanup
 
-	* generic/tcl.h: moved #define of WIN32 to tcl.h where __WIN32__
-	is defined and added #ifndef check.
+	* generic/tcl.h: moved #define of WIN32 to tcl.h where __WIN32__ is
+	defined and added #ifndef check.
 
 	* doc/open.n: moved all fconfigure option docs to fconfigure.n
 	* doc/fconfigure.n: added serial config options
 
 	* win/tclWinChan.c:
 	* win/tclWinPort.h:
-	* win/tclWinSerial.c: added TIP #35 Windows enhancements for
-	serial configuration. [Patch #438509] (schroedter)
+	* win/tclWinSerial.c: added TIP #35 Windows enhancements for serial
+	configuration. [Patch 438509] (schroedter)
 
 2001-10-15  Vince Darley  <vincentdarley@users.sourceforge.net>
 
 	* generic/tclFCmd.c: fix to memory leak in TclFileDeleteCmd on
 	certain error conditions.
 	* doc/FileSystem.3: fix to typo.
-	
+
 2001-10-12  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* library/encoding/ebcdic.enc:
 	* tools/encoding/ebcdic.txt: EBCDIC charset mapping.
-	[Patch #219323] (nijtmans)
+	[Patch 219323] (nijtmans)
 
 	* library/encoding/tis-620.enc:
 	* tools/encoding/tis-620.txt: TIS-620 charset mapping.
-	[Patch #467423] (poonlap)
+	[Patch 467423] (poonlap)
 
 	* tests/http.test: added removeFile for outdata
 
-	* tests/ioCmd.test: added catch around file removal, as Windows
-	file locking throws errors.
+	* tests/ioCmd.test: added catch around file removal, as Windows file
+	locking throws errors.
 
 	* tests/socket.test (socket-7.2): corrected to work on Win2K.
 
 2001-10-12  Miguel Sofer  <msofer@users.sourceforge.net>
-	
+
 	* tests/compile.test: new tests for [Bug 467523]; they are only
 	effective if TCL_MEM_DEBUG was set during compilation.
 
 2001-10-11  Miguel Sofer  <msofer@users.sourceforge.net>
-	
+
 	* generic/tclLiteral.c (TclReleaseLiteral): insured that
 	self-referential bytecodes are properly cleaned up on interpreter
 	deletion [Bug 467523] (Ronnie Brunner)
 
 2001-10-10  David Gravereaux  <davygrvy@pobox.com>
 
-	* win/tclWinPort.h:  #include <winsock2.h> needed to get moved
-	to after #include <windows.h> or wierd misunderstandings took
-	place when -D_WIN32_WINNT=0x0400 is set for outside code that
-	requires knowledge of Tcl innards.  General header macro magic
-	applied liberally...
+	* win/tclWinPort.h:  #include <winsock2.h> needed to get moved to
+	after #include <windows.h> or wierd misunderstandings took place when
+	-D_WIN32_WINNT=0x0400 is set for outside code that requires knowledge
+	of Tcl innards. General header macro magic applied liberally...
 
 2001-10-10  Don Porter	<dgp@users.sourceforge.net>
 
@@ -1151,20 +1122,20 @@
 
 2001-10-09  Jeff Hobbs	<jeffh@ActiveState.com>
 
-	* generic/tclFileName.c (Tcl_SplitPath): corrected mem leak
-	intro'd with VFS code where the result obj from Tcl_FSSplitPath
-	was not getting freed.
+	* generic/tclFileName.c (Tcl_SplitPath): corrected mem leak intro'd
+	with VFS code where the result obj from Tcl_FSSplitPath was not
+	getting freed.
 
 2001-10-09  Miguel Sofer  <msofer@users.sourceforge.net>
-	
-	* generic/tclLiteral.c: (TclReleaseLiteral) reverted previous
-	patch for [Bug 467523] - cure is worse than the illness.
+
+	* generic/tclLiteral.c: (TclReleaseLiteral) reverted previous patch
+	for [Bug 467523] - cure is worse than the illness.
 
 2001-10-05  Miguel Sofer  <msofer@users.sourceforge.net>
-	
+
 	* generic/tclLiteral.c: (TclReleaseLiteral) insured that
 	self-referential bytecodes are properly cleaned up on interpreter
-	deletion [Bug 467523] (Ronnie Brunner)
+	deletion. [Bug 467523] (Ronnie Brunner)
 
 2001-10-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -1217,18 +1188,18 @@
 	* tools/encoding/macIceland.txt:
 	* tools/encoding/macRoman.txt:
 	* tools/encoding/macTurkish.txt:
-	Updated encodings with latest mappings from www.unicode.org.  This
-	did not include some Mac encodings that have special multi-unichar
-	translations now (like symbols, dingbats and japanese).  Also does
-	not include big5, gb or euc* as those have different formats in
-	the latest Unicode version that need new conversion tools.  Not
-	all related .enc files changed as some had been updates separately.
+	Updated encodings with latest mappings from www.unicode.org. This did
+	not include some Mac encodings that have special multi-unichar
+	translations now (like symbols, dingbats and japanese). Also does not
+	include big5, gb or euc* as those have different formats in the latest
+	Unicode version that need new conversion tools. Not all related .enc
+	files changed as some had been updates separately.
 
 2001-10-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclEvent.c (Tcl_FinalizeThread): moved freeing of
-	tclLibraryPath to before the thread exit handlers are called.
-	Slight modification to change on 2001-09-24.
+	tclLibraryPath to before the thread exit handlers are called. Slight
+	modification to change on 2001-09-24.
 
 2001-10-01  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -1245,45 +1216,44 @@
 	* generic/tclCmdIL.c:
 	* generic/tclCmdMZ.c:
 	* generic/tclParseExpr.c: removed unnecessary inclusion of
-	tclCompile.h and made a small modification in (InfoBodyCmd) to
-	improve the isolation of the compiler/engine subsystem.
+	tclCompile.h and made a small modification in (InfoBodyCmd) to improve
+	the isolation of the compiler/engine subsystem.
 
 2001-09-29  Vince Darley  <vincentdarley@users.sourceforge.net>
 
 	* generic/tclIOUtil.c:
-	* doc/FileSystem.3: corrected and clarified documentation
-	for 'Tcl_FSListVolumes(Proc)'.  No code changes.
-	
+	* doc/FileSystem.3: corrected and clarified documentation for
+	'Tcl_FSListVolumes(Proc)'. No code changes.
+
 2001-09-28  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* doc/FindExec.3: added a comment not to change the working
-	directory before calling Tcl_GetNameOfExecutable [Bug 219215] 
+	* doc/FindExec.3: added a comment not to change the working directory
+	before calling Tcl_GetNameOfExecutable. [Bug 219215]
 
 2001-09-28  Kevin Kenny   <kennykb@users.sourceforge.net>
 
-	* generic/tclIO.c: added two more '(ClientData)' casts
-	on calls to Tcl_Preserve and Tcl_Release -- ones that
-	Vince apparently missed.
-	
+	* generic/tclIO.c: added two more '(ClientData)' casts on calls to
+	Tcl_Preserve and Tcl_Release -- ones that Vince apparently missed.
+
 2001-09-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* doc/lsort.n: Improved doc...
 	* generic/tclCmdIL.c (Tcl_LsortObjCmd, SortCompare): Made
-	offset-from-end indexing work, and factored out some "magic
-	numbers" for easier understanding.  [Bug #465674]
+	offset-from-end indexing work, and factored out some "magic numbers"
+	for easier understanding. [Bug 465674]
 	* tests/cmdIL.test (cmdIL-1.26): Added test for offset-from-end
 	indexing for lsort.
 
 2001-09-28  Vince Darley  <vincentdarley@users.sourceforge.net>
 
 	* win/tclWinFCmd.c:
-	* unix/tclUnixFCmd.c: fix to performance issue reported
-	by jcw in which 'access("")' is called unnecessarily when
-	normalizing any absolute path.
+	* unix/tclUnixFCmd.c: fix to performance issue reported by jcw in
+	which 'access("")' is called unnecessarily when normalizing any
+	absolute path.
 	* generic/tclIO.c: added '(ClientData)' cast to calls to
-	Tcl_(Preserve|Release) newly introduced, fixing compile
-	error on Windows.
-	
+	Tcl_(Preserve|Release) newly introduced, fixing compile error on
+	Windows.
+
 2001-09-27  Don Porter  <dgp@users.sourceforge.net>
 
 	* doc/FileSystem.3 (Tcl_FSLoadFile):
@@ -1305,70 +1275,67 @@
 	* unix/tclLoadShl.c (TclpLoadFile):
 	* win/tclWinLoad.c (TclpLoadFile):
 	* win/tclWinFCmd.c (DoRemoveJustDirectory):  More CONST poisoning
-	fixes from the 2001-09-24 TIP 27 changes.  CONST-ified
-	Tcl_FSLoadFile and TclpLoadFile.  Report and patch from Kevin
-	Kenny. [Bug 465833]
+	fixes from the 2001-09-24 TIP 27 changes. CONST-ified Tcl_FSLoadFile
+	and TclpLoadFile. Report and patch from Kevin Kenny. [Bug 465833]
 
-	* generic/tclIO.c (ChannelTimerProc):  Added Tcl_Preserve()
-	and Tcl_Release() to fix segfault introduced by the 2001-09-26
-	changes.  [Bug 465494]
+	* generic/tclIO.c (ChannelTimerProc):  Added Tcl_Preserve() and
+	Tcl_Release() to fix segfault introduced by the 2001-09-26 changes.
+	[Bug 465494]
 
-	* doc/TCL_MEM_DEBUG.3:  Updated out-of-date reference to
-	#define GUARD_SIZE.
+	* doc/TCL_MEM_DEBUG.3:  Updated out-of-date reference to #define
+	GUARD_SIZE.
 
 	* doc/UpVar.3 (Tcl_UpVar,Tcl_UpVar2):
 	* generic/tcl.decls (Tcl_UpVar,Tcl_UpVar2):
 	* generic/tclInt.decls (TclFindProc,TclGetFrame):
 	* generic/tclInt.h (TclFindProc,TclGetFrame,TclLookupVar,
-	  TclPrecTraceProc,TclProcInterpProc}):
+	(TclPrecTraceProc,TclProcInterpProc}):
 	* generic/tclProc.c (TclGetFrame,TclFindProc):
 	* generic/tclVar.c (Tcl_UpVar,Tcl_UpVar2,MakeUpvar):  Updated APIs in
-	generic/tclProc.c and generic/tclVar.c according to the guidelines
-	of TIP 27.  [Patch 465442]
+	generic/tclProc.c and generic/tclVar.c according to the guidelines of
+	TIP 27. [Patch 465442]
 
 	* generic/tclDecls.h:
 	* generic/tclIntDecls.h: make genstubs
 
-2001-09-26  Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
-
-	* doc/fileevent.n: Accepted [Patch #465279] adding an example to
-	  the fileevent manpage. Minor modifications to get a better
-	  formatting. Report and patch by David N. Welton
-	  <davidw@users.sourceforge.net>.
-
-	* The changes below fix [Bug #462317] where Expect tried to read
-	  more than was in the buffers and then blocked in the OS call as
-	  its pty channel driver provides no blockmodeproc through which
-	  the OS could be notified of blocking-behaviour. Because of this
-	  the general I/O core has to take more care than usual to
-	  preserve the semantics of non-blocking channels.
-
-	  The problem was reported by "Kevin O'Gorman"
-	  <kevin@kosmanor.com>.
-
-	* generic/tclIO.c (Tcl_ReadRaw): Do not read from the driver if
-	  the channel is non-blocking and the fileevent causing the read
-	  was generated by a timer. We do not know if there is data
-	  available from the OS. Instead of going to the OS for more and
-	  potentially blocking we simply signal EWOULDBLOCK to the higher
-	  levels to cause the system to wait for true fileevents.
-	  (GetInput): Same as before.
-	  (ChannelTimerProc): Added set and clear of CHANNEL_TIMER_FEV.
-
-	* generic/tclIO.h (CHANNEL_TIMER_FEV): New flag for channels. Is
-	  set if a fileevent was generated by a timer, the channel is not
-	  blocking and the driver did not provide a blockmodeproc. In that
-	  case the I/O core has to be especially careful about going to
-	  the driver for more data.
+2001-09-26  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* doc/fileevent.n: Accepted [Patch 465279] adding an example to the
+	fileevent manpage. Minor modifications to get a better formatting.
+	Report and patch by David N. Welton <davidw@users.sourceforge.net>.
+
+	* The changes below fix [Bug 462317] where Expect tried to read more
+	than was in the buffers and then blocked in the OS call as its pty
+	channel driver provides no blockmodeproc through which the OS could be
+	notified of blocking-behaviour. Because of this the general I/O core
+	has to take more care than usual to preserve the semantics of
+	non-blocking channels.
+
+	The problem was reported by "Kevin O'Gorman" <kevin@kosmanor.com>.
+
+	* generic/tclIO.c (Tcl_ReadRaw): Do not read from the driver if the
+	channel is non-blocking and the fileevent causing the read was
+	generated by a timer. We do not know if there is data available from
+	the OS. Instead of going to the OS for more and potentially blocking
+	we simply signal EWOULDBLOCK to the higher levels to cause the system
+	to wait for true fileevents.
+	(GetInput): Same as before.
+	(ChannelTimerProc): Added set and clear of CHANNEL_TIMER_FEV.
+
+	* generic/tclIO.h (CHANNEL_TIMER_FEV): New flag for channels. Is set
+	if a fileevent was generated by a timer, the channel is not blocking
+	and the driver did not provide a blockmodeproc. In that case the I/O
+	core has to be especially careful about going to the driver for more
+	data.
 
 2001-09-26  Don Porter  <dgp@users.sourceforge.net>
 
 	* doc/SplitPath.3 (Tcl_GetPathType):
 	* generic/tcl.decls (Tcl_GetPathType):
 	* generic/tclFileName.c (Tcl_GetPathType):
-	* win/tclWinFile.c (TclpMatchInDirectory, NativeStat):  Vince
-	Darley reports the 2001-09-24 TIP 27 changes left the win
-	directory CONST poisoned.  These changes should fix that.
+	* win/tclWinFile.c (TclpMatchInDirectory, NativeStat):  Vince Darley
+	reports the 2001-09-24 TIP 27 changes left the win directory CONST
+	poisoned. These changes should fix that.
 
 	* generic/tclDecls.h: make genstubs
 
@@ -1378,17 +1345,17 @@
 	* generic/tclInt.h (TclGetLong deleted):
 	* generic/tcl.decls:
 	* generic/tclInt.decls:
-	* generic/tclGet.c:  Updated APIs in generic/tclGet.c
-	according to the guidelines of TIP 27.  [Patch 464674]
+	* generic/tclGet.c:  Updated APIs in generic/tclGet.c according to the
+	guidelines of TIP 27. [Patch 464674]
 
-	* generic/tclDecls.h: 
+	* generic/tclDecls.h:
 	* generic/tclIntDecls.h: make genstubs
 
 2001-09-25  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclVar.c: removed comments referring to unused flag
-	TCL_PARSE_PART1. 
-	
+	TCL_PARSE_PART1.
+
 2001-09-24  Don Porter  <dgp@users.sourceforge.net>
 
 	* doc/Concat.3:
@@ -1400,37 +1367,34 @@
 	* generic/tclEncoding.c (OpenEncodingFile):
 	* generic/tclMain.c (Tcl_Main):
 	* generic/tclUtil.c:
-	* unix/tclLoadDl.c (TclpLoadFile):  Updated APIs in 
-	generic/tclUtil.c according to the guidelines of TIP 27.
-	[Patch 464553]
+	* unix/tclLoadDl.c (TclpLoadFile):  Updated APIs in generic/tclUtil.c
+	according to the guidelines of TIP 27. [Patch 464553]
 
-	* generic/tclDecls.h: 
+	* generic/tclDecls.h:
 	* generic/tclIntDecls.h: make genstubs
 
 2001-09-24  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* The change below fixes [Bug #464380]. The bug was reported by
-	  Ronnie Brunner <rbrunner@users.sourceforge.net>. He also
-	  provided the patch.
-	
-	* generic/tclEvent.c (Tcl_Finalize): Moved release of
-	  'tclLibraryPath' to Tcl_FinalizeThread.
-	  (Tcl_FinalizeThread): See above, new place for release of
-	  'tclLibraryPath'.
+	The change below fixes [Bug 464380]. The bug was reported by Ronnie
+	Brunner <rbrunner@users.sourceforge.net>. He also provided the patch.
+
+	* generic/tclEvent.c (Tcl_Finalize): Moved release of 'tclLibraryPath'
+	to Tcl_FinalizeThread.
+	(Tcl_FinalizeThread): See above, new place for release of
+	'tclLibraryPath'.
 
 2001-09-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tools/encoding/cp1252.txt: File was missing part of the encoding
-	  [euro, ZCaron and zcaron].
+	[euro, ZCaron and zcaron].
 
-	* doc/OpenFileChnl.3: Add docs for Tcl_OutputBuffered; remove some
-	  old changebars.
+	* doc/OpenFileChnl.3: Add docs for Tcl_OutputBuffered; remove some old
+	changebars.
 
 2001-09-21  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclExecute.c (TclExecuteByteCode): corrected
-	  INST_STR_CMP else case for strings to pass true utf char length
-	  to Tcl_UtfNCmp.
+	* generic/tclExecute.c (TclExecuteByteCode): corrected INST_STR_CMP
+	else case for strings to pass true utf char length to Tcl_UtfNCmp.
 
 2001-09-20  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -1439,30 +1403,30 @@
 	* win/tclWinSock.c (SocketThread): corrected pointer cast for _WIN64.
 
 	* win/tclWinNotify.c: removed unnecessary winsock include (it is
-	  already in from tclWinPort.h).
+	already in from tclWinPort.h).
 
-	* win/tclWinPort.h: changed winsock.h include to winsock2.h.
-	  Reverses change from 2000-11-16, but is necessary for WIN64.
-	  Extensions should comply with defined OS words, or use #ifndef.
+	* win/tclWinPort.h: changed winsock.h include to winsock2.h. Reverses
+	change from 2000-11-16, but is necessary for WIN64. Extensions should
+	comply with defined OS words, or use #ifndef.
 
 2001-09-20  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/socket.test: removed dependence on being run from same dir
-	  as remote.tcl, which only now needs to be in the same dir as
-	  this file.  [Bug #219326]
+	* tests/socket.test: removed dependence on being run from same dir as
+	remote.tcl, which only now needs to be in the same dir as this file.
+	[Bug 219326]
 
 2001-09-19  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclTest.c (TestcmdtokenCmd): corrected pointer
-	  storage/retrieval for 64bit machines.
+	storage/retrieval for 64bit machines.
 
 	* generic/tclCmdAH.c (Tcl_FormatObjCmd):
-	* generic/tclScan.c (Tcl_ScanObjCmd): corrected handling of format
-	and scan on 64-bit machines. [Bug #412696] (rmax)
+	* generic/tclScan.c (Tcl_ScanObjCmd): corrected handling of format and
+	scan on 64-bit machines. [Bug 412696] (rmax)
 
 	* unix/configure: regen'ed
-	* unix/tcl.m4: added --enable-64bit support for HP-11 with the
-	64-bit kernel.
+	* unix/tcl.m4: added --enable-64bit support for HP-11 with the 64-bit
+	kernel.
 
 	* tests/basic.test:
 	* tests/cmdInfo.test: improved skip reporting of missing commands
@@ -1471,10 +1435,10 @@
 
 	* tests/winPipe.test: removed obsolete cat16 tests
 
-	* generic/tclExecute.c (TclExecuteByteCode): fixed invalid usage
-	of valuePtr in TRACE_WITH_OBJ in INST_EVAL_STK case. [Bug #462594]
-	Changed INST_STR_CMP instruction to promote to Unicode strings
-	only when one of the strings is already of Unicode type.
+	* generic/tclExecute.c (TclExecuteByteCode): fixed invalid usage of
+	valuePtr in TRACE_WITH_OBJ in INST_EVAL_STK case. [Bug 462594] Changed
+	INST_STR_CMP instruction to promote to Unicode strings only when one
+	of the strings is already of Unicode type.
 
 	* generic/tclExecute.c (TclExecuteByteCode):
 	* generic/tclCompile.c (instructionTable):
@@ -1486,77 +1450,75 @@
 	* tests/{for.test,foreach.test,if.test,while.test}:
 	* generic/tclCompCmds.c (TclCompileForCmd, TclCompileForeachCmd,
 	TclCompileIfCmd, TclCompileWhileCmd): Corrected the overaggressive
-	compiling of loop bodies enclosed in ""s.  [Bug #219166] (msofer)
+	compiling of loop bodies enclosed in ""s.  [Bug 219166] (msofer)
 
 2001-09-19  Miguel Sofer  <msofer@users.sourceforge.net>
-	
-	* generic/tclExecute.c: insured that execution stack errors are
-	also detected at abnormal returns.
+
+	* generic/tclExecute.c: insured that execution stack errors are also
+	detected at abnormal returns.
 
 2001-09-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* doc/socket.n: Added documentation to mention what happens when a
-	server socket is created with port=0.  Removed an old change bar,
-	and no new change bar because Tcl has always behaved this way as
-	it is really a poorly-documented standards-defined OS feature.
+	server socket is created with port=0. Removed an old change bar, and
+	no new change bar because Tcl has always behaved this way as it is
+	really a poorly-documented standards-defined OS feature.
 
 	* tests/util.test (util-8.1): Test derived from code to detect the
-	problem, but the test always works in the C locale, so beware if
-	you are maintaining the code.
-	* generic/tclUtil.c (TclNeedSpace): Rewrote to be UTF-8 aware.
-	[Bug 411825, but not that patch which would have added extra
-	spaces if there was a real non-ASCII space involved. ]
+	problem, but the test always works in the C locale, so beware if you
+	are maintaining the code.
+	* generic/tclUtil.c (TclNeedSpace): Rewrote to be UTF-8 aware. [Bug
+	411825, but not that patch which would have added extra spaces if
+	there was a real non-ASCII space involved.]
 
-2001-09-18 Andreas Kupries  <andreas_kupries@users.sourceforge.net> 
+2001-09-18 Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* generic/tclIOCmd.c (Tcl_PutsObjCmd): Rewritten to have saner and
-	  faster argument handling.  Fixes bug #123552. Patch provided by
-	  Donal K. Fellows <fellowsd@cs.man.ac.uk>: #402564.
+	faster argument handling. [Bug 123552], [Patch 402564] (fellows)
 
 2001-09-18  Don Porter  <dgp@users.sourceforge.net>
 
 	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): On Linux, disable inlining when
-	one of the compat/*.c routines is to be linked in. [Patch 440891]
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): On Linux, disable inlining when one
+	of the compat/*.c routines is to be linked in. [Patch 440891]
 
 2001-09-17  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tcl.h: removed forced #define USE_TCLALLOC 1 for
-	Windows.  This means the native system allocator will be used by
-	default.  This should be binary and source compatible with
-	extensions, as Tcl_Alloc is a properly stubbed function.
+	* generic/tcl.h: removed forced #define USE_TCLALLOC 1 for Windows.
+	This means the native system allocator will be used by default. This
+	should be binary and source compatible with extensions, as Tcl_Alloc
+	is a properly stubbed function.
 
 2001-09-17  Miguel Sofer  <msofer@users.sourceforge.net>
-	
-	* generic/tclExecute.c: corrected small bug in [Patch 456668] -
-	the varFramePtr was not restored in one possible exit.
+
+	* generic/tclExecute.c: corrected small bug in [Patch 456668] - the
+	varFramePtr was not restored in one possible exit.
 
 2001-09-17  Miguel Sofer  <msofer@users.sourceforge.net>
-	
+
 	* doc/tclvars.n:
 	* generic/tclCompile.c:
 	* generic/tclCompile.h:
 	* generic/tclExecute.c:
 	* generic/tclProc.c: disabled all compile and execution tracing
-	functionality in standard builds; TCL_COMPILE_DEBUG is now
-	necessary to enable it. [Bug 451858]
+	functionality in standard builds; TCL_COMPILE_DEBUG is now necessary
+	to enable it. [Bug 451858]
 
 2001-09-14  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* doc/gets.n: 
-	* doc/read.n: 
-	* doc/puts.n: 
-	* doc/flush.n: 
-	* doc/fconfigure.n: 
-	* doc/flush.n: 
-	* doc/eof.n: 
-	* doc/seek.n: 
-	* doc/tell.n: 
-	* doc/close.n: 
-	* doc/fileevent.n: Added references to the Tcl standard
-	  channels. Item [219250], reported by David LeBlanc
-	  <whisper@oz.net>. Thanks to Christopher Nelson
-	  <chris@pinebush.com> for doing editorial work.
+	* doc/gets.n:
+	* doc/read.n:
+	* doc/puts.n:
+	* doc/flush.n:
+	* doc/fconfigure.n:
+	* doc/flush.n:
+	* doc/eof.n:
+	* doc/seek.n:
+	* doc/tell.n:
+	* doc/close.n:
+	* doc/fileevent.n: Added references to the Tcl standard channels. Item
+	[219250], reported by David LeBlanc <whisper@oz.net>. Thanks to
+	Christopher Nelson <chris@pinebush.com> for doing editorial work.
 
 2001-09-13  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
@@ -1565,56 +1527,52 @@
 	* win/makefile.bc:
 	* win/makefile.vc:
 	* library/dde/pkgIndex.tcl: Fixed version numbers from bogus tcl
-	  versions to independent versions for dde and registry packages.
+	versions to independent versions for dde and registry packages.
 
 2001-09-13  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tests/regexp.test (regexp-20.1):
 	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): had to adjust fix from
-	2001-08-06 to actually duplicate the objects in certain cases.
-	This is really a place where feather would have been essential.
-	[Bug #461322]
+	2001-08-06 to actually duplicate the objects in certain cases. This is
+	really a place where feather would have been essential. [Bug 461322]
 
 	* generic/tclUtf.c (Tcl_UtfPrev): corrected to return the proper
-	location when the middle of a UTF-8 byte was passed in.
-	[Tk Bug #450504]
+	location when the middle of a UTF-8 byte was passed in [Tk Bug 450504]
 
 	* ChangeLog.1999:
 	* ChangeLog: broke changes from 199x into ChangeLog.1999 to reduce
-	  size of the main ChangeLog.
+	size of the main ChangeLog.
 
 2001-09-13  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
 	* tests/ioCmd.test: Changed the computation of the result for
-	  iocmd-8.1[123] so that the tests work for single- and
-	  multi-process execution of the testsuite. Depending on the
-	  choice of the user stdout is a tty or not and thus reports
-	  different channel options. Fixes [460993] reported by Don
-	  Porter.
+	iocmd-8.1[123] so that the tests work for single- and multi-process
+	execution of the testsuite. Depending on the choice of the user stdout
+	is a tty or not and thus reports different channel options. Fixes
+	[460993] reported by Don Porter.
 
 2001-09-13  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* doc/ParseCmd.3:  
+	* doc/ParseCmd.3:
 	* generic/tcl.decls:
 	* generic/tclCmdMZ.c (Tcl_SubstObjCmd):
 	* generic/tclDecls.h:
 	* generic/tclParse.c:
 	* generic/tclStubInit.c:
-	* tests/parse.test: Deprecate the use of Tcl_EvalTokens, replaced
-	by the new Tcl_EvalTokensStandard. The new function performs the
-	same duties but adheres to the standard return convention for Tcl
+	* tests/parse.test: Deprecate the use of Tcl_EvalTokens, replaced by
+	the new Tcl_EvalTokensStandard. The new function performs the same
+	duties but adheres to the standard return convention for Tcl
 	evaluations; the deprecated function could only return TCL_OK or
-	TCL_ERROR, which caused [Bug 219384] and [Bug 455151].
-	This patch implements [TIP 56].
-	
+	TCL_ERROR, which caused [Bug 219384] and [Bug 455151]. This patch
+	implements [TIP 56].
+
 2001-09-12  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/configure: Regen.
-	* unix/tcl.m4: Invert the logic that checks for $GCC.
-	Instead of checking for "$GCC" = "no" we check for
-	"$GCC" != "yes" or simply swap the true and false
-	blocks of code in an if statement. That way if
-	GCC is set to "" everything will still work. [Bug 460991]
+	* unix/tcl.m4: Invert the logic that checks for $GCC. Instead of
+	checking for "$GCC" = "no" we check for "$GCC" != "yes" or simply swap
+	the true and false blocks of code in an if statement. That way if GCC
+	is set to "" everything will still work. [Bug 460991]
 
 2001-09-12  Don Porter <msofer@users.sourceforge.net>
 
@@ -1622,8 +1580,8 @@
 	* tests/lsearch.test:
 	* tests/namespace.test:
 	* tests/rename.test:
-	* tests/split.test:  Corrected tests to better isolate tests in
-	one file from influencing tests in other files.  [Bug 460591]
+	* tests/split.test:  Corrected tests to better isolate tests in one
+	file from influencing tests in other files. [Bug 460591]
 
 2001-09-12  Miguel Sofer  <msofer@users.sourceforge.net>
 
@@ -1633,181 +1591,170 @@
 2001-09-11  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
 	* doc/OpenFileChnl.3: Added documentation for Tcl_WriteRaw and
-	  Tcl_ReadRaw [#414929].
-	
-	* doc/CrtChannel.3: Added documentation for Tcl_ChannelBuffered
-	  and Tcl_GetTopChannel [#414929].
+	Tcl_ReadRaw [Bug 414929].
+
+	* doc/CrtChannel.3: Added documentation for Tcl_ChannelBuffered and
+	Tcl_GetTopChannel [Bug 414929].
 
-	* The changes below are a fix for [219253].
+	* The changes below are a fix for [Bug 219253].
 
 	* tests/socket.test: Removed _most_ instances of hardwired port
-	  numbers for listening sockets. Remaining are the ports in all
-	  tests with constraint 'doTestsWithRemoteServer'. These seem to
-	  be designed for a more controlled environment and are usually
-	  skipped when running the testsuite.
+	numbers for listening sockets. Remaining are the ports in all tests
+	with constraint 'doTestsWithRemoteServer'. These seem to be designed
+	for a more controlled environment and are usually skipped when running
+	the testsuite.
 
-	* tests/io.test: Removed all instances of hardwired port numbers
-	  for listening sockets.
+	* tests/io.test: Removed all instances of hardwired port numbers for
+	listening sockets.
 
 2001-09-10  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclEvent.c (TclInExit): Corrected handling of tsd in
-	late stages of finalization.  [Bug #419449] (darley)
+	* generic/tclEvent.c (TclInExit): Corrected handling of tsd in late
+	stages of finalization. [Bug 419449] (darley)
 
 	* tests/stack.test:
 	* generic/tclInterp.c (AliasObjCmd): Check the numLevels to ensure
-	that we aren't hitting some alias loop condition.  [Bug #443184]
+	that we aren't hitting some alias loop condition. [Bug 443184]
 
 2001-09-10  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/configure: Regen.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Don't include . characters
-	in the Tcl library name when building on FreeBSD 3.X and later
-	systems. [Patch 450725]
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Don't include . characters in the
+	Tcl library name when building on FreeBSD 3.X and later systems.
+	[Patch 450725]
 
 2001-09-10  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
 	* doc/tclsh.1:
-	* doc/Tcl_Main.3: 
-	* doc/CrtChannel.3: 
-	* doc/OpenFileChnl.3: 
+	* doc/Tcl_Main.3:
+	* doc/CrtChannel.3:
+	* doc/OpenFileChnl.3:
 	* doc/GetStdChan.3: Enhanced the manpages with cross-references to
-	  the new manpage and more explanations how these functions deal
-	  with the standard channels in various situations.
+	the new manpage and more explanations how these functions deal with
+	the standard channels in various situations.
 
-	* doc/StdChannels.3: New manpage describing handling of the
-	  standard channels by the Tcl library [402725].
+	* doc/StdChannels.3: New manpage describing handling of the standard
+	channels by the Tcl library. [Bug 402725]
 
 2001-09-10  Don Porter <dgp@users.sourceforge.net>
 
-	* unix/mkLinks (Tcl_FSLink): Updated to reflect 2001-08-23
-	file system changes.
+	* unix/mkLinks (Tcl_FSLink): Updated to reflect 2001-08-23 file system
+	changes.
 
 	* unix/tclLoadShl.c:  Added #include of tclInt.h; access to Tcl
-	internals, notably TclpUnloadFile(), is required.  Thanks to
-	Bob Techentin for report and patch.  [Bug 459305]
+	internals, notably TclpUnloadFile(), is required. Thanks to Bob
+	Techentin for report and patch. [Bug 459305]
 
 	* generic/tclInitScript.h (initScript):
 	* win/tclWinInit.c (TCL_REGISTRY_KEY, TclpSetVariables):  Removed
-	vestiges of Tcl's old initialization from registry variables.
-	[Bug 455645]
+	vestiges of Tcl's old initialization from registry variables. [Bug
+	455645]
 
 2001-09-10  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* generic/tclInt.decls: Also added 'TclWinFlushDirtyChannels' to
-	  the internal platform specific stub table.
+	* generic/tclInt.decls: Also added 'TclWinFlushDirtyChannels' to the
+	  internal platform specific stub table.
 
 	* win/tclWinFile.c (TclpObjStat): Now added the call to
-	  'TclWinFlushDirtyChannels' to this function. I don't know where
-	  my head was last thursday (2001-09-06), but the call was
-	  actually added to 'TclpObjChdir', i.e. the implementation of
-	  [cd]. Corrected this now. Thanks to Vince Darley for spotting
-	  this.
+	'TclWinFlushDirtyChannels' to this function. I don't know where my
+	head was last thursday (2001-09-06), but the call was actually added
+	to 'TclpObjChdir', i.e. the implementation of [cd]. Corrected this
+	now. Thanks to Vince Darley for spotting this.
 
 2001-09-10  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclProc.c:
-	* tests/proc.test: made [proc] bytecompile a no-op for procs
-	defined with _args_ as single argument and an empty body.
-	[FQ 451441] 
-	
+	* tests/proc.test: made [proc] bytecompile a no-op for procs defined
+	with _args_ as single argument and an empty body. [FRQ 451441]
+
 2001-09-09  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* unix/Makefile.in:
-	* win/Makefile.in: Use () around variable name
-	instead of {}. Use TCLTEST variable directly
-	instead of depending on the tcltest alias.
+	* win/Makefile.in: Use () around variable name instead of {}. Use
+	TCLTEST variable directly instead of depending on the tcltest alias.
 
 2001-09-09  David Gravereaux <davygrvy@pobox.com>
 
 	* generic/tcl.h:
-	* generic/tclPlatDecls.h:  Reminder from David Cuthbert <dacut@kanga.org>
-	that I hadn't finished the Borland compatibility stuff.
-	[Patch: 436116]
+	* generic/tclPlatDecls.h: Reminder from David Cuthbert
+	<dacut@kanga.org> that I hadn't finished the Borland compatibility
+	stuff. [Patch 436116]
 
 2001-09-09  Mo DeJong  <mdejong@users.sourceforge.net>
 
-	* tests/cmdAH.test: Modify cmdAH-20.5 and cmdAH-24.8
-	to display the file atime or mtime results if
-	the test fails.
+	* tests/cmdAH.test: Modify cmdAH-20.5 and cmdAH-24.8 to display the
+	file atime or mtime results if the test fails.
 
 2001-09-08  David Gravereaux <davygrvy@pobox.com>
 
 	* win/mkd.bat:
-	* win/rmd.bat: made these text files, text files again.
-	[Patch: 451333]
+	* win/rmd.bat: made these text files, text files again. [Patch 451333]
 
 2001-09-08  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* win/mkd.bat:
-	* win/rmd.bat:
-	Apply binary property (cvs admin -kb) to files and convert
-	to CRLF linefeed format to fix the VC++ build. [Bug #219409]
+	* win/rmd.bat: Apply binary property (cvs admin -kb) to files and
+	convert to CRLF linefeed format to fix the VC++ build. [Bug 219409]
 
 2001-09-08 Vince Darley <vincentdarley@users.sourceforge.net>
 
-	* generic/tclInt.h: 
+	* generic/tclInt.h:
 	* generic/tclFCmd.c:
 	* doc/FileSystem.3:
-	* generic/tclIOUtil.c: removed Tcl_FSCopyFile fallback
-	to channel copying, since the channels will not have
-	access to interpreters and the channel copying currently
-	requires an interp.  Code which required cross-platform
-	copies always has interpreters, so that solves the problem.
-	Fixes bug in TclKit.
-	
+	* generic/tclIOUtil.c: removed Tcl_FSCopyFile fallback to channel
+	copying, since the channels will not have access to interpreters and
+	the channel copying currently requires an interp. Code which required
+	cross-platform copies always has interpreters, so that solves the
+	problem. Fixes bug in TclKit.
+
 2001-09-07  David Gravereaux <davygrvy@pobox.com>
 
-	* win/tcl.m4: Added -link50compat option so a VC6 linker makes
-	a VC5 (pre sp3) compatible import library.
-	[Bug: 219257]
+	* win/tcl.m4: Added -link50compat option so a VC6 linker makes a VC5
+	(pre sp3) compatible import library. [Bug 219257]
 
 2001-09-07  Mo DeJong  <mdejong@users.sourceforge.net>
 
 	* win/tclWinThrd.c (TclpThreadExit): Cast status argument to
-	_endthreadex to unsigned instead of DWORD to match the Win32
-	function prototype.
+	_endthreadex to unsigned instead of DWORD to match the Win32 function
+	prototype.
 
 2001-09-06  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* All the changes below serve to fix bug [219148] which reports a
-	  80x performance hit for file I/O on Win* systems. On my system
-	  it was closer to a 120x hit. Problem report by Uwe Traum <no
-	  email address available>.
+	* All the changes below serve to fix bug [219148] which reports a 80x
+	performance hit for file I/O on Win* systems. On my system it was
+	closer to a 120x hit. Problem report by Uwe Traum <no email address
+	available>.
 
-	  The fix goes like this: The obstacle is 'FlushFileBuffers',
-	  executed whenever Tcl writes data to the OS, as Tcl has to wait
-	  for the disk to complete I/O, and disks are slow. We remove that
-	  obstacle. This opens another problem, [file size] reports back
-	  wrong numbers. So for [file size] we add the call back in. As
-	  optimization we keep track of the channels which were written to
-	  and flush only these.
+	The fix goes like this: The obstacle is 'FlushFileBuffers', executed
+	whenever Tcl writes data to the OS, as Tcl has to wait for the disk to
+	complete I/O, and disks are slow. We remove that obstacle. This opens
+	another problem, [file size] reports back wrong numbers. So for [file
+	size] we add the call back in. As optimization we keep track of the
+	channels which were written to and flush only these.
 
 	* win/tclWinFile.c (TclpObjStat): Added a call to
-	  'TclWinFlushDirtyChannels'. This ensures that [file size] and
-	  related commands report the correct size of a file even if Tcl
-	  has recently written to it. Unixoid OS's always report the
-	  correct size even for files with pending data, but Win*
-	  syssystem don't. They only report what is actually on disk.
+	'TclWinFlushDirtyChannels'. This ensures that [file size] and related
+	commands report the correct size of a file even if Tcl has recently
+	written to it. Unixoid OS's always report the correct size even for
+	files with pending data, but Win* syssystem don't. They only report
+	what is actually on disk.
 
-	* win/tclWinInt.h: Added declaration of
-	  'TclWinFlushDirtyChannels', making it available to other parts
-	  of the tcl core.
+	* win/tclWinInt.h: Added declaration of 'TclWinFlushDirtyChannels',
+	making it available to other parts of the tcl core.
 
 	* win/tclWinChan.c (TclWinFlushDirtyChannels): New, internal,
-	  procedure. Goes through the list of open file channels and
-	  forces the OS to flush its file buffers for all which were
-	  written to since the last call of this function. This is an
-	  expensive operation as Tcl has to wait for the OS to complete
-	  actual writes to the disk.
+	procedure. Goes through the list of open file channels and forces the
+	OS to flush its file buffers for all which were written to since the
+	last call of this function. This is an expensive operation as Tcl has
+	to wait for the OS to complete actual writes to the disk.
 
-	  (FileInfo): Added dirty flag required by the procedure above.
+	(FileInfo): Added dirty flag required by the procedure above.
 
-	  (FileOutputProc): Removed flushing of file buffers, setting the
-	  dirty flag instead. This means that the previously incurred
-	  delays do not happen anymore.
+	(FileOutputProc): Removed flushing of file buffers, setting the dirty
+	flag instead. This means that the previously incurred delays do not
+	happen anymore.
 
-	  (TclWinOpenFileChannel): Added initialization of 'dirty' flag.
+	(TclWinOpenFileChannel): Added initialization of 'dirty' flag.
 
 2001-09-06  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -1815,48 +1762,48 @@
 	* tests/http.test:
 	* library/http/pkgIndex.tcl:
 	* library/http/http.tcl (geturl): correctly get charset parameter
-	and convert text according to specified encoding (if known).  RFC
-	iso8859-1 is used by default.  Also recognize Content-encoding to
-	see if we should do binary translation.  Added a CYA -binary
-	switch for the cases that were missed. [Bug #219211 #219399]
+	and convert text according to specified encoding (if known). RFC
+	iso8859-1 is used by default. Also recognize Content-encoding to see
+	if we should do binary translation. Added a CYA -binary switch for the
+	cases that were missed. [Bugs 219211, 219399]
 
 	* tests/ioUtil.test: changed to make better use of constraints and
 	remove knownBug constraints that weren't valid.
 
 2001-09-06  Don Porter  <dgp@users.sourceforge.net>
 
-	* tests/unixInit.test (unixInit-3.2): Updated test to support
-	  newer HP-UX releases that properly report euc-jp as the system
-	  encoding for Japanese.  Bug report and patch verification by Bob
-	  Techentin.  [Bug 453883]
+	* tests/unixInit.test (unixInit-3.2): Updated test to support newer
+	HP-UX releases that properly report euc-jp as the system encoding for
+	Japanese. Bug report and patch verification by Bob Techentin. [Bug
+	453883]
 
 	* doc/http.n:
 	* library/http/*.tcl:
 	* tools/tcl.wse.in:
 	* tools/tclmin.wse:
 	* unix/Makefile.in:
-	* win/{Mm}akefile.*:  Updated http package to version 2.4,
-	reflecting the new features just added.
+	* win/{Mm}akefile.*:  Updated http package to version 2.4, reflecting
+	the new features just added.
 
 2001-09-06 Vince Darley <vincentdarley@users.sourceforge.net>
 
-	* generic/tclTest.c: tests of old-fs hooks no longer cause problems
-	in threaded builds.  Also removed unused unload proc.
+	* generic/tclTest.c: tests of old-fs hooks no longer cause problems in
+	threaded builds. Also removed unused unload proc.
 	* generic/tcl.decls:
-	* generic/tclIOUtilc: added Tcl_FSMountsChanged so that a vfs
-	can inform the filesystem that the filesystem epoch must be
-	changed (since cached filesystems may now be incorrect).  Fixes
-	problem running tclvfs extension.
-	* library/tcltest/tcltest.tcl: if tests aren't in a native
-	filesystem, then don't use pipes to run them. [Bug 458741]
-	
+	* generic/tclIOUtilc: added Tcl_FSMountsChanged so that a vfs can
+	inform the filesystem that the filesystem epoch must be changed (since
+	cached filesystems may now be incorrect). Fixes problem running tclvfs
+	extension.
+	* library/tcltest/tcltest.tcl: if tests aren't in a native filesystem,
+	then don't use pipes to run them. [Bug 458741]
+
 2001-09-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tcl.decls (479 generic): 
-	* generic/tclIO.c (Tcl_Seek,Tcl_Tell,Tcl_OutputBuffered): Added
-	public function to return the size of the output buffer and
-	reworked other channel functions to use this shared functionality
-	and that of Tcl_InputBuffered() too. [TIP#49, Rolf Schroedter]
+	* generic/tcl.decls (479 generic):
+	* generic/tclIO.c (Tcl_Seek,Tcl_Tell,Tcl_OutputBuffered): Added public
+	function to return the size of the output buffer and reworked other
+	channel functions to use this shared functionality and that of
+	Tcl_InputBuffered() too. [TIP#49, Rolf Schroedter]
 
 2001-09-05  David Gravereaux <davygrvy@pobox.com>
 
@@ -1864,39 +1811,36 @@
 	support.
 
 	* win/tclWinPipe.c:
-	* win/tclWinPort.h:  More Borland compatibility fixes.  Changed
-	EDQUOT #define from 49 to 69.  Borland had a clash as it was already
-	using this number.  Upon advice from Helmut Giese, EDQUOT has been
-	found in other header files #defined as 69.
-	[Patch: 436116]
+	* win/tclWinPort.h:  More Borland compatibility fixes. Changed EDQUOT
+	#define from 49 to 69. Borland had a clash as it was already using
+	this number. Upon advice from Helmut Giese, EDQUOT has been found in
+	other header files #defined as 69. [Patch 436116]
 
 	* win/.cvsignore:  A few more glob patterns added.
 
 	* win/makefile.bc (new):  Borland lives once more! rejoice..
 	* generic/tclAlloc.c: Small Borland compatibility fix.
-	* win/tclWinTime.c:  More Borland compatibility fixes.
-	[Patch: 436116]
+	* win/tclWinTime.c:  More Borland compatibility fixes. [Patch 436116]
 
 2001-09-05 Vince Darley <vincentdarley@users.sourceforge.net>
 
-	* tests/winFCmd.test: made notWin2000 constraint false if not
-	running on Windows at all.
-	
+	* tests/winFCmd.test: made notWin2000 constraint false if not running
+	on Windows at all.
+
 2001-09-04  David Gravereaux <davygrvy@pobox.com>
 
-	* win/tclWinThrd.c:  Revisited _beginthreadex() stuff.  Instead
-	of assuming a c-runtime implimentation of _beginthreadex normal,
-	I reversed the logic to not assume, and use when is by explicitly
+	* win/tclWinThrd.c:  Revisited _beginthreadex() stuff. Instead of
+	assuming a c-runtime implimentation of _beginthreadex normal, I
+	reversed the logic to not assume, and use when is by explicitly
 	needing to add runtimes that support it such as Borland.
 
 	* generic/tcl.h:
-	* generic/tclPlatDecls.h:  Borland compatibility change so
-	ClientData was properly typed as a void* and TCHAR would not be
-	defined twice.
+	* generic/tclPlatDecls.h:  Borland compatibility change so ClientData
+	was properly typed as a void* and TCHAR would not be defined twice.
 
-	* generic/tcl.h:  Removed a small mistake from before.  Changes to
-	the EXTERN macro for proper Borland compatibility will have to see
-	a TIP.  What's this with the MS compiler:
+	* generic/tcl.h:  Removed a small mistake from before. Changes to the
+	EXTERN macro for proper Borland compatibility will have to see a TIP.
+	What's this with the MS compiler:
 
 		__declspec(dllexport) int func (int a, int b);
 
@@ -1908,115 +1852,110 @@
 
 2001-09-04  Don Porter  <dgp@users.sourceforge.net>
 
-	* compat/strtod.c (strtod):  Fixed failure to handle expressions
-	like 3eq2 and failure to set errno on overflow.  [Bug 440894]
+	* compat/strtod.c (strtod):  Fixed failure to handle expressions like
+	3eq2 and failure to set errno on overflow. [Bug 440894]
 
 2001-09-04  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclProc.c:
-	* tests/proc.test: made [proc] check that formal args have
-	simple names [Bug 458548] 
+	* tests/proc.test: made [proc] check that formal args have simple
+	names. [Bug 458548]
 
 2001-09-04 Vince Darley <vincentdarley@users.sourceforge.net>
 
-	Minor bug fixes in filesystem, plus small vfs changes as a 
-	result of enabling the test filesystem to work properly.
+	Minor bug fixes in filesystem, plus small vfs changes as a result of
+	enabling the test filesystem to work properly.
 	* tests/fileName.test: ensure new test cleans up after itself
-	* doc/filename.n: 
-	* generic/tclFileName.c: improved Mac path handling and document
-	why [Bug: 421842] on Windows handling of UNC paths is not valid.
-	Documentation and code now much clearer on what is and is not a 
-	UNC path.
+	* doc/filename.n:
+	* generic/tclFileName.c: improved Mac path handling and document why
+	[Bug 421842] on Windows handling of UNC paths is not valid.
+	Documentation and code now much clearer on what is and is not a UNC
+	path.
 	* doc/FileSystem.3:
 	* unix/tclUnixPipe.c:
 	* generic/tclFCmd.c:
-	* generic/tclIOUtil.c: fixed error message, fixed [Bug: 453512]
-	about dangerous use of tmpnam, replaced with mkstemp.  
-	Documented all the changes.
-	* generic/tclTest.c: made test vfs fully functional as a 
-	'reporting filesystem'.
+	* generic/tclIOUtil.c: fixed error message, fixed [Bug 453512] about
+	dangerous use of tmpnam, replaced with mkstemp. Documented all the
+	changes.
+	* generic/tclTest.c: made test vfs fully functional as a 'reporting
+	filesystem'.
 	* generic/tcl.stubs:
 	* generic/tcl.h:
-	* generic/tclInt.h: 
+	* generic/tclInt.h:
 	* generic/tclIOUtil.c:
 	* doc/file.n:
-	* various platform-specific 'TclpLoadFile': fixed comments about 
-	unload behaviour, and completed objectification of loading.
-	Required change to Tcl_Filesystem lookup table, so incompatible
-	with 8.4a3, but not older versions of Tcl.  The change also
-	allows 'link' and 'reporting' filesystems to function correctly
-	when loading files.  Implementation of 'file delete -force'
-	copes with case where cwd is inside the directory.  Moved
-	overlooked Tcl_FSGetPathType from internal to external API.
-	Made sure filesystems which are registered and then unregistered
-	are only freed when all references to them are gone.
+	* various platform-specific 'TclpLoadFile': fixed comments about
+	unload behaviour, and completed objectification of loading. Required
+	change to Tcl_Filesystem lookup table, so incompatible with 8.4a3, but
+	not older versions of Tcl. The change also allows 'link' and
+	'reporting' filesystems to function correctly when loading files.
+	Implementation of 'file delete -force' copes with case where cwd is
+	inside the directory. Moved overlooked Tcl_FSGetPathType from internal
+	to external API. Made sure filesystems which are registered and then
+	unregistered are only freed when all references to them are gone.
 	Documented changes.
-	* unix/tclUnixFCmd.c: when deleting directories recursively,
-	make sure permissions are ok.  Together with the above, this
-	fixes [Bug: 219139]
-	* tests/winFCmd.test: differentiated test results for win2k 
-	versus not.  This fixes [Bug: 219239]
-	* tests/fCmd.test: added tests for 'file delete -force' where
-	the cwd is inside, and when permissions are inadequate.
-	
+	* unix/tclUnixFCmd.c: when deleting directories recursively, make sure
+	permissions are ok. Together with the above, this fixes [Bug 219139]
+	* tests/winFCmd.test: differentiated test results for win2k versus
+	not. This fixes [Bug: 219239]
+	* tests/fCmd.test: added tests for 'file delete -force' where the cwd
+	is inside, and when permissions are inadequate.
+
 2001-09-04  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclCompile.c: fixed incorrect operands for INST_LIST
-	[Bug: 458241] (David Cuthbert, dacut@users.sourceforge.net)
+	* generic/tclCompile.c: fixed incorrect operands for INST_LIST [Bug
+	458241] (David Cuthbert, dacut@users.sourceforge.net)
 
 2001-09-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclExecute.c (TclExecuteByteCode): fixed missing comma
-	in debug macro.
+	* generic/tclExecute.c (TclExecuteByteCode): fixed missing comma in
+	debug macro.
 
 2001-09-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/ExprLongObj.3: Fixed error in documentation of argument type
-	to Tcl_ExprObj [Bug: 457435]
+	* doc/ExprLongObj.3: Fixed error in documentation of argument type to
+	Tcl_ExprObj [Bug 457435]
 
 2001-09-02  David Gravereaux <davygrvy@pobox.com>
 
 	* win/tclWinThrd.c:  Portability fix for Cygwin who's c-runtime,
 	not surprisingly, doesn't have the MSVCRT specific _beginthreadex /
-	_endthreadex pair.  This might have to be revisited for proper
-	Borland, lcc32, Watcom and other support as well.
-	[Patch: 444255]
+	_endthreadex pair. This might have to be revisited for proper Borland,
+	lcc32, Watcom and other support as well. [Patch 444255]
 
 	* win/tclWinThrd.c:  Moved FinalizeConditionEvent() proto to within
 	the main #ifdef TCL_THREADS block to avoid mingw warning about it
 	being there but unused.
 
-	* win/makefile.vc:  Added -Zl (zee el) to tclStubLib.c compile line
-	to make sure the tclstub84.lib static library is built without
-	requiring a specific C-runtime library at link-time for the end-use
-	developer.  It has been noted on c.l.t that this trips many first
-	time users trying to make extensions.
-	[Patch: 403533]
+	* win/makefile.vc:  Added -Zl (zee el) to tclStubLib.c compile line to
+	make sure the tclstub84.lib static library is built without requiring
+	a specific C-runtime library at link-time for the end-use developer.
+	It has been noted on c.l.t that this trips many first time users
+	trying to make extensions. [Patch 403533]
 
 2001-08-31  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclInt.h: added TclCompileListCmd header
 	* generic/tclBasic.c: added TclCompileListCmd compile proc
-	* generic/tclCompCmds.c (TclCompileListCmd): function to compile
-	the 'list' command at parse time.
-	* generic/tclExecute.c (TclExecuteByteCode): definition of
-	INST_LIST bytecode.
+	* generic/tclCompCmds.c (TclCompileListCmd): function to compile the
+	'list' command at parse time.
+	* generic/tclExecute.c (TclExecuteByteCode): definition of INST_LIST
+	bytecode.
 
-	* doc/StringObj.3: added words of warning to use Tcl_ResetResult
-	with the Tcl_Append* functions.
+	* doc/StringObj.3: added words of warning to use Tcl_ResetResult with
+	the Tcl_Append* functions.
 
 	* tests/compile.test: added compile-11.* interp result checks
-	* generic/tclUtil.c (TclGetIntForIndex): added Tcl_ResetResult
-	before Tcl_AppendStringsToObj to prevent shared object crash when
-	called from bcc instruction.  The Tcl_Append* calls that append to
-	the result object that are invoked by bcc insts must remember to
-	call Tcl_ResetResult because the bcc doesn't do this for us.
-	[Bug #456892]
+	* generic/tclUtil.c (TclGetIntForIndex): added Tcl_ResetResult before
+	Tcl_AppendStringsToObj to prevent shared object crash when called from
+	bcc instruction. The Tcl_Append* calls that append to the result
+	object that are invoked by bcc insts must remember to call
+	Tcl_ResetResult because the bcc doesn't do this for us. [Bug 456892]
 
 2001-08-30  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* generic/tclIndexObj.c: fixed some casting problems that upset
-	Crays. [Bug #419528] (andreasen)
+	* generic/tclIndexObj.c: fixed some casting problems that upset Crays.
+	[Bug 419528] (andreasen)
 
 2001-08-30  Don Porter  <dgp@users.sourceforge.net>
 
@@ -2024,120 +1963,116 @@
 
 2001-08-30  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclExecute.c: allow cached fully-qualified command names
-	to be usable from different namespaces within the same interpreter
-	without forcing a new lookup. This speeds up scripts that pass
-	command names in variables ("this" in some OO packages).
-	[Patch 456668]. 
+	* generic/tclExecute.c: allow cached fully-qualified command names to
+	be usable from different namespaces within the same interpreter
+	without forcing a new lookup. This speeds up scripts that pass command
+	names in variables ("this" in some OO packages). [Patch 456668]
 
 2001-08-30 Vince Darley <vincentdarley@users.sourceforge.net>
 
-	Further fs updates.  After examining the most common Tcl
-	extensions (TclX, BLT, Tk, TclPro, Mktclapp), it has been
-	determined that only TclpGetCwd and the Access/Stat/Open
-	insert/delete hooks of the internal fs functions are ever used.
-	The remaining functions from Tcl's internal interfaces have
-	therefore been removed, since Tcl now exports a more suitable
-	public API (Tcl_FS...)
-	
+	Further fs updates. After examining the most common Tcl extensions
+	(TclX, BLT, Tk, TclPro, Mktclapp), it has been determined that only
+	TclpGetCwd and the Access/Stat/Open insert/delete hooks of the
+	internal fs functions are ever used. The remaining functions from
+	Tcl's internal interfaces have therefore been removed, since Tcl now
+	exports a more suitable public API (Tcl_FS...)
+
 	* generic/tclInt.stubs:
-	* generic/tclInt.h: updated for removed internal functions.
-	Some new internal functions have been put in tclInt.h (and
-	not exported in the stub table because good public equivalents
-	exist).
-	* generic/tclTest.c: some test functions used the internal private 
-	APIs.  These tests have been retained, but modified to use 
-	public APIs.  Also objectified the internal filesystem tests.
-	* win/tclWinFile.c: removed TclpStat, TclpAccess and refactored
-	code to use NativeAccess, NativeStat.  This should speed up
-	stat, access and glob commands.
-	* win/tclWinFCmd.c: removed all TclpCopy/Rename/Delete 
-	File/Directory string-based procedures which aren't used any more.
-	Improved efficiency of some other procedures. Ensure that filename
-	conversions with a NULL interp do not crash Tcl.
+	* generic/tclInt.h: updated for removed internal functions. Some new
+	internal functions have been put in tclInt.h (and not exported in the
+	stub table because good public equivalents exist).
+	* generic/tclTest.c: some test functions used the internal private
+	APIs. These tests have been retained, but modified to use public APIs.
+	Also objectified the internal filesystem tests.
+	* win/tclWinFile.c: removed TclpStat, TclpAccess and refactored code
+	to use NativeAccess, NativeStat. This should speed up stat, access and
+	glob commands.
+	* win/tclWinFCmd.c: removed all TclpCopy/Rename/Delete File/Directory
+	string-based procedures which aren't used any more. Improved
+	efficiency of some other procedures. Ensure that filename conversions
+	with a NULL interp do not crash Tcl.
 	* mac/tclMacFCmd.c: wrapped long lines and cleaned up
-	TclpObjNormalizePath, removed all TclpCopy/Rename/Delete 
+	TclpObjNormalizePath, removed all TclpCopy/Rename/Delete
 	File/Directory string-based procedures which aren't used any more.
 	* mac/tclMacFile.c: removed obsolete TclpStat, TclpAccess, TclpChdir,
 	etc.
 	* unix/tclUnixFCmd.c: removed use of TclpAccess, removed all
 	TclpCopy/Rename/Delete File/Directory string-based procedures which
 	aren't used any more.
-	* unix/tclUnixFile.c: removed obsolete TclpStat, TclpAccess, TclpChdir,
-	etc.
+	* unix/tclUnixFile.c: removed obsolete TclpStat, TclpAccess,
+	TclpChdir, etc.
 	* tcl(Unix|Mac|Win)Chan.c: objectified TclpOpenFileChannel.
 	* various 'load' implementations all objectified.
 	* generic/tclFileName.c: removed redundant code.
 	* generic/tclIOUtil.c: removed TclStat, TclAccess, TclpListVolumes.
-	Fix to MatchInDirectory at the root of a volume.  Also improved
-	some documentation, and improved default path joining behaviour
-	for virtual filesystems, especially regarding '~'.
+	Fix to MatchInDirectory at the root of a volume. Also improved some
+	documentation, and improved default path joining behaviour for virtual
+	filesystems, especially regarding '~'.
 	* tests/fileName.test: added tests to check for bugs fixed above.
 	* doc/FileName.3: improved documentation
-	
+
 2001-08-30  David Gravereaux <davygrvy@pobox.com>
 
 	* generic/tclAsync.c:
 	* generic/tclEvent.c:
 	* generic/tclInt.h: Improper cleanup of asyncMutex in tclAsync.c
-	repaired.  TclFinalizeSynchronization() was trying to remove a
-	registered mutex that was dumped earlier when the TSD it was stored
-	in was cleared. This was only surfacing on *nix.  Windows was being
-	masked by mutexes not actually being returned to the system!  That
-	was repaired in a previous patch.  Needed to add a private
+	repaired. TclFinalizeSynchronization() was trying to remove a
+	registered mutex that was dumped earlier when the TSD it was stored in
+	was cleared. This was only surfacing on *nix. Windows was being masked
+	by mutexes not actually being returned to the system! That was
+	repaired in a previous patch. Needed to add a private
 	TclFinalizeAsync() to tclAsync.c and called from Tcl_FinalizeThread().
-	Pheww..  Is this done yet?
-	[Bug: 414419] requested by Rob Ratcliff <rrr6399@futuretek.com>
+	Pheww.. Is this done yet? [Bug 414419] requested by Rob Ratcliff
+	<rrr6399@futuretek.com>
 
 2001-08-28  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclCompCmds.c (TclPushVarName): noted 'static' defn.
-	[Bug #453872]
+	[Bug 453872]
 
 2001-08-26  Don Porter <dgp@users.sourceforge.net>
 
 	* library/auto.tcl (tcl_findLibrary):
 	* tests/unixInit.test (unixInit-2.{1,9}):
 	* unix/tclUnixInit.c (TclpInitLibraryPath):
-	* win/tclWinInit.c (TclpInitLibraryPath):  Corrected 
-	inconsistency between  the search path for script libraries and
-	the directory name $DISTNAME into which distributions built
-	by 'make test' unpack.  [Bug 455642]
+	* win/tclWinInit.c (TclpInitLibraryPath):  Corrected inconsistency
+	between  the search path for script libraries and the directory name
+	$DISTNAME into which distributions built by 'make test' unpack. [Bug
+	455642]
 
 2001-08-24  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tests/stringComp.test: added string-1.3
 	* generic/tclCompCmds.c (TclCompileStringCmd): changed to return
 	TCL_OUT_LINE_COMPILE instead of TCL_ERROR when compiling and an
-	unknown string method is called.  This is necessary as the string
+	unknown string method is called. This is necessary as the string
 	command may be never called, or not until 'string' is redefined.
 
 2001-08-24 Vince Darley <vincentdarley@users.sourceforge.net>
 
 	* doc/glob.n: documented windows-style path issue with glob.
-	[Bug: 219392]
+	[Bug 219392]
 	* doc/filename.n: documented windows path/file length limitation.
-	[Bug: 454597]
+	[Bug 454597]
 
 2001-08-24  Don Porter <dgp@users.sourceforge.net>
 
-	* tests/unixInit.test (unixInit-2.9): Corrected expected result
-	to match Tcl's quirky construction of its init library path.
+	* tests/unixInit.test (unixInit-2.9): Corrected expected result to
+	match Tcl's quirky construction of its init library path.
 
 2001-08-23  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* win/tclWinPipe.c (BuildCommandLine): Fixed tcl Bug
-	  [432499]. Part of the code used the non-absolute path to the
-	  executable to determine quoting. This failed if the absolute
-	  path contained spaces, but the application name itself not. This
-	  bug caused no trouble on Win NT 5, but does for other variants
-	  in the Win* family. Report and fix due to Ken Poole
-	  <kenpoole@users.sourceforge.net>.
+	* win/tclWinPipe.c (BuildCommandLine): Fixed [Bug 432499]. Part of the
+	code used the non-absolute path to the executable to determine
+	quoting. This failed if the absolute path contained spaces, but the
+	application name itself not. This bug caused no trouble on Win NT 5,
+	but does for other variants in the Win* family. Report and fix due to
+	Ken Poole <kenpoole@users.sourceforge.net>.
 
 2001-08-23  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* unix/configure:
-	* unix/tcl.m4: added QNX-6 build support. [Bug #219410] (loverso)
+	* unix/tcl.m4: added QNX-6 build support. [Bug 219410] (loverso)
 
 	* unix/tclUnixFCmd.c:
 	* generic/tclIOUtil.c:
@@ -2145,97 +2080,93 @@
 
 2001-08-23 Vince Darley <vincentdarley@users.sourceforge.net>
 
-	Variety of small filesystem and vfs issues fixed or improved.
-	The new fs code allows many new opportunities for efficiency
-	improvements through the objectified API. The main changes
-	integrated here are such efficiency improvements.  Some
-	limitations of the original implementation have also now been
-	lifted.  Meanwhile a variety of fs bugs (some old, some new)
-	have also been fixed.
-	
-	* generic/tclFileName.c: Made Tcl_FSSplitPath more efficient, 
-	and removed some static string-based procedures which are no 
-	longer used.  Much more objectification.  Tcl_FSJoinPath
-	is now very efficient and more aware of virtual filesystems.
-	Clarified where the Mac-specific code attempts to interpret
-	Unix-style paths.  Modified TclDoGlob to use lstat not
-	access to fix [Bug: 434876, L. Virden]
+	Variety of small filesystem and vfs issues fixed or improved. The new
+	fs code allows many new opportunities for efficiency improvements
+	through the objectified API. The main changes integrated here are such
+	efficiency improvements. Some limitations of the original
+	implementation have also now been lifted. Meanwhile a variety of fs
+	bugs (some old, some new) have also been fixed.
+
+	* generic/tclFileName.c: Made Tcl_FSSplitPath more efficient, and
+	removed some static string-based procedures which are no longer used.
+	Much more objectification. Tcl_FSJoinPath is now very efficient and
+	more aware of virtual filesystems. Clarified where the Mac-specific
+	code attempts to interpret Unix-style paths. Modified TclDoGlob to use
+	lstat not access to fix [Bug 434876] (L. Virden)
+
 	* tcl(Win|Unix|Mac)FCmd.c:
 	* tcl(Win|Unix|Mac)File.c: replaced TclpListVolumes with
-	TclpObjListVolumes with different signature, updated code due
-	to more efficient signature of Tcl_FSGetTranslatedPath.  Used
-	cached native paths where possible to improve efficiency --
-	this was completed on MacOS, but on Unix and Win the traversal
-	functions make the task much more complex, so there are still
-	some improvements possible there.  Removed unused 
-	TclpNormalizePath which had been left in tclWinFCmd.c.
-	Objectified all 'file attributes' functions.  Fixed the new
-	[Bug:451571, Bruce Stephens] which is most obvious on Unix, 
-	but could occur on MacOS or Windows.  This bug actually existed
-	in Tcl 8.3.x but was only made obvious by the recent filesystem
-	overhaul when the code was exercised more heavily.  
-	* tests/fileName.test: Three new tests to exercise the above bug,
-	and make sure it is fixed correctly.
-	* unix/tclUnixFile.c: avoid panic in glob when a link
-	doesn't point anywhere.  It would probably be good to define
-	exactly what Tcl should do in circumstances like these, and
-	make sure mac/win/unix all behave accordingly. [Bug: 417111, 
-	Hemang Lavana]. Also fixed misleading/obsolete comment in the code.
-	* generic/tcl.stubs: changed signature of Tcl_FSGetTranslatedPath
-	and added Tcl_FSGetTranslatedStringPath.
+	TclpObjListVolumes with different signature, updated code due to more
+	efficient signature of Tcl_FSGetTranslatedPath. Used cached native
+	paths where possible to improve efficiency -- this was completed on
+	MacOS, but on Unix and Win the traversal functions make the task much
+	more complex, so there are still some improvements possible there.
+	Removed unused TclpNormalizePath which had been left in tclWinFCmd.c.
+	Objectified all 'file attributes' functions. Fixed the new [Bug
+	451571, Bruce Stephens] which is most obvious on Unix, but could occur
+	on MacOS or Windows. This bug actually existed in Tcl 8.3.x but was
+	only made obvious by the recent filesystem overhaul when the code was
+	exercised more heavily.
+	* tests/fileName.test: Three new tests to exercise the above bug, and
+	make sure it is fixed correctly.
+	* unix/tclUnixFile.c: avoid panic in glob when a link doesn't point
+	anywhere. It would probably be good to define exactly what Tcl should
+	do in circumstances like these, and make sure mac/win/unix all behave
+	accordingly. [Bug 417111] (Hemang Lavana). Also fixed
+	misleading/obsolete comment in the code.
+	* generic/tcl.stubs: changed signature of Tcl_FSGetTranslatedPath and
+	added Tcl_FSGetTranslatedStringPath.
 	These changes allow further optimisations in the FS code.
-	* generic/tcl.h: changed signature of Tcl_FSListVolumes so that 
-	it doesn't require a Tcl interpreter plus result.  Renamed 
-	Tcl_FSReadLink to Tcl_FSLink with additional argument so
-	we can support making links in the future. [Patch: 450340]
-	* generic/tclInt.h:
-	added declaration for TclpObjListVolumes.  Objectified 
-	internal call signatures for 'file attributes' functions, and
-	added an internal objectified get path type function.
-	* generic/tclIOUtil.c: added the moved function TclpListVolumes 
-	which calls platform specific code (needed for backwards 
-	compatibility), and improved efficiency of parts of the FS
-	(particularly file normalization).  Much less copying and
-	memory allocation is required now.  added new GetPathType 
-	so that changes in 'file volumes' can actually affect files'
-	types, and objectified more code.  Made current code work
-	with test suite artificially changing current platform.
+	* generic/tcl.h: changed signature of Tcl_FSListVolumes so that it
+	doesn't require a Tcl interpreter plus result. Renamed Tcl_FSReadLink
+	to Tcl_FSLink with additional argument so we can support making links
+	in the future. [Patch: 450340]
+	* generic/tclInt.h: added declaration for TclpObjListVolumes.
+	Objectified internal call signatures for 'file attributes' functions,
+	and added an internal objectified get path type function.
+	* generic/tclIOUtil.c: added the moved function TclpListVolumes which
+	calls platform specific code (needed for backwards compatibility), and
+	improved efficiency of parts of the FS (particularly file
+	normalization). Much less copying and memory allocation is required
+	now. added new GetPathType so that changes in 'file volumes' can
+	actually affect files' types, and objectified more code. Made current
+	code work with test suite artificially changing current platform.
 	Added 'static' keywords where required.
 	* generic/tclIO.c:
-	* generic/tclTest.c: Added 'static' keywords, fixing 
-	[Bug: 453872, Bob Techentin]
-	* generic/tclCmdAH.c: file command implementation updated for 
-	API changes, removed unnecessary special-case SplitPath static
-	function, since it no longer helps prevent code duplication.
-	Moved setting of interpreter result to each individual location
-	that actually required it, to avoid very large code separation
-	between reading and setting the result.
-	* doc/FileSystem.3: updated documentation for the new or 
-	changed APIs, and clarified some issues.
+	* generic/tclTest.c: Added 'static' keywords, fixing [Bug 453872] (Bob
+	Techentin)
+	* generic/tclCmdAH.c: file command implementation updated for API
+	changes, removed unnecessary special-case SplitPath static function,
+	since it no longer helps prevent code duplication. Moved setting of
+	interpreter result to each individual location that actually required
+	it, to avoid very large code separation between reading and setting
+	the result.
+	* doc/FileSystem.3: updated documentation for the new or changed APIs,
+	and clarified some issues.
 	* doc/SplitPath.3: added pointer to newer APIs in FileSystem.3
-	* doc/filename.n: clarified current implementation of tilde
-	support on Mac/Win.  [Bug:453514, Sergey Kuzmin]
-	* doc/glob.n: improved documentation for '-directory' and '-path' 
+	* doc/filename.n: clarified current implementation of tilde support on
+	Mac/Win.  [Bug 453514] (Sergey Kuzmin)
+	* doc/glob.n: improved documentation for '-directory' and '-path'
 	options.
-	
-	There are now many private, obsolete, platform-specific 'Tclp' 
-	string-based filesystem APIs which could be removed.  We should
-	check whether any of these are used by extensions and, at least
-	in Tcl 9, remove them.
-	
-	The above changes signify a ***POTENTIAL INCOMPATIBILITY*** 
-	with 8.4a3, since signatures of two functions in the new API 
-	have changed, but not with older versions of Tcl.
+
+	There are now many private, obsolete, platform-specific 'Tclp'
+	string-based filesystem APIs which could be removed. We should check
+	whether any of these are used by extensions and, at least in Tcl 9,
+	remove them.
+
+	The above changes signify a ***POTENTIAL INCOMPATIBILITY*** with
+	8.4a3, since signatures of two functions in the new API have changed,
+	but not with older versions of Tcl.
 
 2001-08-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclBinary.c (FormatNumber): Extract a long from the
-	object and not an int, to stop [binary format] from being unable
-	to format some input numbers on architectures where sizeof(int) is
-	less than sizeof(long) (particularly Alpha.)  [tiprender Bug #441861]
+	* generic/tclBinary.c (FormatNumber): Extract a long from the object
+	and not an int, to stop [binary format] from being unable to format
+	some input numbers on architectures where sizeof(int) is less than
+	sizeof(long) (particularly Alpha). [tiprender Bug 441861]
 
-	* tests/format.test: Converted conditional execution of tests into
-	a test constraint.
+	* tests/format.test: Converted conditional execution of tests into a
+	test constraint.
 
 2001-08-22  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -2243,90 +2174,88 @@
 	* win/makefile.vc: updated install target for dde1.2
 	* doc/dde.n: fixed dde man page (which was totally incorrect).
 	* tests/winDde.test:
-	* win/tclWinDde.c (Tcl_DdeObjCmd): added -binary option to dde
-	request command to allow for returning binary data. [Bug #227482]
+	* win/tclWinDde.c (Tcl_DdeObjCmd): added -binary option to dde request
+	command to allow for returning binary data. [Bug 227482]
 	Updated dde to 1.2
 
-	* tests/tcltest.test: added unixExecs constraint to files that
-	used 'grep' in the test. [Bug #453143]
+	* tests/tcltest.test: added unixExecs constraint to files that used
+	'grep' in the test. [Bug 453143]
+
+	* library/tcltest/tcltest.tcl: fixed stdio constraint test. [Patch
+	454050] (stanton)
+	Simplified unixExecs constraint test.
 
-	* library/tcltest/tcltest.tcl: fixed stdio constraint test.
-	[Patch #454050] (stanton)
-	Simplified unixExecs constraint test. 
-	
 2001-08-22  Don Porter <dgp@users.sourceforge.net>
 
-	* tests/ioUtil.test (ioUtil-3.*): Corrected errors in tests
-	revealed by fix of overagressive compiler.  [Bug 451200]
+	* tests/ioUtil.test (ioUtil-3.*): Corrected errors in tests revealed
+	by fix of overagressive compiler. [Bug 451200]
 
 2001-08-21  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclCompCmds.c:
-	* tests/compile.test: Fixed overagressive compilation of [catch]:
-	it was catching errors at substitution time. [Bug #219184]
-	
+	* tests/compile.test: Fixed overagressive compilation of [catch]: it
+	was catching errors at substitution time. [Bug 219184]
+
 2001-08-21  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* tests/tcltest.test (tcltest-12.2): fixed test that would break
-	when env vars weren't Tcl list friendly [Patch #454046] (stanton)
+	* tests/tcltest.test (tcltest-12.2): fixed test that would break when
+	env vars weren't Tcl list friendly [Patch 454046] (stanton)
 
 2001-08-20  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* library/http/http.tcl (geturl): added port number to Host:
-	header to comply with HTTP/1.1 spec (RFC 2068).  [Bug #452217]
+	* library/http/http.tcl (geturl): added port number to Host: header to
+	comply with HTTP/1.1 spec (RFC 2068). [Bug 452217]
 
 2001-08-16  David Gravereaux <davygrvy@pobox.com>
 
 	* tools/tcl.wse.in:
 	* tools/tcl.hpj.in:
 	* win/tcl.hpj.in:  Removed -kb storage in CVS to ensure these text
-	files are checked-out in the translation mode CVS is in.  Setting
-	these as binary as part of an effort to make sure they are always
-	in CRLF, no matter what the CVS translation, is bypassing how CVS
-	works and is confusing.
+	files are checked-out in the translation mode CVS is in. Setting these
+	as binary as part of an effort to make sure they are always in CRLF,
+	no matter what the CVS translation, is bypassing how CVS works and is
+	confusing.
 
-	* tools/genStubs.tcl:  Removed LF-only output.  Having to reconvert
-	back to CRLF before committing to CVS was giving me a headache.
-	[Bug: 451333]
+	* tools/genStubs.tcl:  Removed LF-only output. Having to reconvert
+	back to CRLF before committing to CVS was giving me a headache. [Bug
+	451333]
 
 	* win/makefile.vc: replaced $(WINDIR) with $(include32) for the
-	.rc.res inference rule.  winver.h wasn't getting included.
-	[Bug: 445630]
+	.rc.res inference rule. winver.h wasn't getting included. [Bug 445630]
 
 2001-08-14  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclBasic.c: make the intial maxNestingDepth of an
-	interpreter be MAX_NESTING_DEPTH instead of a hardwired value
-	[Bug: 232564]
+	interpreter be MAX_NESTING_DEPTH instead of a hardwired value. [Bug
+	232564]
 
 2001-08-13  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* tests/trace.test: Corrected test numbers [Bug: 449794] 
+	* tests/trace.test: Corrected test numbers. [Bug 449794]
 
 2001-08-12  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/configure: Regen.
 	* unix/configure.in:
-	* unix/tcl.m4: Use GCC variable set by AC_PROG_CC instead
-	of defining our own using_gcc variable.
+	* unix/tcl.m4: Use GCC variable set by AC_PROG_CC instead of defining
+	our own using_gcc variable.
 
 2001-08-11  Vince Darley <vincentdarley@users.sourceforge.net>
 
 	Variety of small issues introduced by the vfs code fixed:
 	* generic/tclIOUtil.c: uninitialised read.
-	* generic/tclFCmd.c: possible memory leak in file delete 
-	with error condition.
+	* generic/tclFCmd.c: possible memory leak in file delete with error
+	condition.
 
 2001-08-10  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclVar.c: 
+	* generic/tclVar.c:
 	* tests/trace.test: Insure that [array] traces work correctly for
-	undefined variables [Bug: 449094] 
+	undefined variables. [Bug 449094]
 
 2001-08-09  Mo DeJong  <mdejong@redhat.com>
 
-	* unix/Makefile.in: Delete the unused getcwd.o
-	target. This fixes bug #440942.
+	* unix/Makefile.in: Delete the unused getcwd.o target. [Bug 440942]
 
 2001-08-08  Don Porter <dgp@users.sourceforge.net>
 
@@ -2340,8 +2269,8 @@
 	* library/reg/pkgIndex.tcl:
 	* library/tcltest/tcltest.tcl:
 	* library/tcltest/pkgIndex.tcl: Added checks for package dependencies.
-	Bumped patchlevels of changed packages:  http 2.3.2, msgcat 1.2.2,
-	opt 0.4.3, tcltest 2.0.1.  [Patch 448931]
+	Bumped patchlevels of changed packages: http 2.3.2, msgcat 1.2.2,
+	opt 0.4.3, tcltest 2.0.1. [Patch 448931]
 
 	* README:
 	* generic/tcl.h:
@@ -2351,9 +2280,9 @@
 	* unix/tcl.spec:
 	* win/README.binary:
 	* win/configure:
-	* win/configure.in: Bumped up patchlevel to 8.4a4 to distinguish
-	CVS snapshots from the 8.4a3 release.  This does not necessarily
-	mean there will be an 8.4a4 release.  [Bug 448938].
+	* win/configure.in: Bumped up patchlevel to 8.4a4 to distinguish CVS
+	snapshots from the 8.4a3 release. This does not necessarily mean there
+	will be an 8.4a4 release. [Bug 448938]
 
 2001-08-06  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -2361,64 +2290,63 @@
 
 	* changes:
 	* README:
-	* mac/README: 
+	* mac/README:
 	* unix/README:
 	* win/README.binary: updated for 8.4a3 release
 
-	* generic/tclFileName.c (Tcl_FSSplitPath): update to Tcl style
-	guide.
+	* generic/tclFileName.c (Tcl_FSSplitPath): update to Tcl style guide.
 
-	* generic/tclFCmd.c (FileCopyRename): fixed mem leak in
-	introduction of vfs code where a new Tcl_Obj wasn't freed.
+	* generic/tclFCmd.c (FileCopyRename): fixed mem leak in introduction
+	of vfs code where a new Tcl_Obj wasn't freed.
 
-	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd, Tcl_RegsubObjCmd):
-	reordered the retrieval of arguments to avoid shimmering bug when
-	the pattern and string referenced the same object.
+	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd, Tcl_RegsubObjCmd): reordered
+	the retrieval of arguments to avoid shimmering bug when the pattern
+	and string referenced the same object.
 
 	* unix/configure: regenerated
-	* unix/tcl.m4: added GNU (HURD) configuration target. (brinkmann)
-	[Patch: #442974]
+	* unixE/tcl.m4: added GNU (HURD) configuration target.
+	[Patch 442974] (brinkmann)
 
 	* win/README: made note of URL for Windows compilation notes
 
-	* win/tclWinThrd.c (TclpFinalizeMutex, TclpFinalizeCondition):
-	added DeleteCriticalSection calls for cleanup [Patch: #419683]
+	* win/tclWinThrd.c (TclpFinalizeMutex, TclpFinalizeCondition): added
+	DeleteCriticalSection calls for cleanup [Patch 419683]
 
 	* unix/tclUnixPipe.c (TclpCreateTempFile): fixed use of tmpnam,
-	which is dangerous. [Patch: #442636] (lim)
+	which is dangerous. [Patch 442636] (lim)
 	The use of tmpnam in TclpTempFileName must still be changed.
 
 	* tests/http.test (http-4.14): fixed variable error return.
-	[Bug: 424252]
+	[Bug 424252]
 
 2001-08-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* win/configure: regenerated
 	* win/tcl.m4: fixed DLLSUFFIX definition to always be ${DBGX}.dll.
-	This is necessary for TEA compliant builds that build shared
-	against a static-built Tcl.
+	This is necessary for TEA compliant builds that build shared against a
+	static-built Tcl.
 	* win/Makefile.in ($(TCLSH)): added $(TCL_STUB_LIB_FILE) to build
 	target, otherwise it wouldn't get generated in a static build.
 
 2001-08-06  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* generic/tclIOCmd.c (Tcl_GetsObjCmd): Applied patch from SF item
-	  [442665] to fix the bug reported by it. The function can corrupt
-	  a freed object if it is called with objc == 3. This is because
-	  it retrieves resultPtr and does not increment its reference
-	  count, but then calls Tcl_ObjSetVar2, which causes the retrieved
-	  resultPtr object to be released.
-	
+	* generic/tclIOCmd.c (Tcl_GetsObjCmd): Applied patch from [Bug 442665]
+	to fix the bug reported by it. The function can corrupt a freed object
+	if it is called with objc == 3. This is because it retrieves resultPtr
+	and does not increment its reference count, but then calls
+	Tcl_ObjSetVar2, which causes the retrieved resultPtr object to be
+	released.
+
 2001-08-06  Don Porter <dgp@users.sourceforge.net>
 
-	* doc/tclsh.1:  Added note that the tclsh program is frequently
-	installed with the Tcl version numer as part of the name.
-	[Patch 402725]
+	* doc/tclsh.1: Added note that the tclsh program is frequently
+	installed with the Tcl version numer as part of the name. [Patch
+	402725]
 
 	* generic/tclPkg.c:
-	* tests/pkg.test:  [package forget] now forgets all of the
-	package arguments it receives, not stopping when a package is
-	not found.  [Bug 415273]
+	* tests/pkg.test:  [package forget] now forgets all of the package
+	arguments it receives, not stopping when a package is not found. [Bug
+	415273]
 
 2001-08-02  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -2428,141 +2356,133 @@
 2001-08-02  Mo DeJong  <mdejong@redhat.com>
 
 	* generic/tclPlatDecls.h:
-	* win/tclWinPort.h:
-	Revert <tchar.h> related changes made to improve
-	Cygwin support on 2001-07-18. This change ended
-	up breaking the VC++ build because of conflicts
-	between Windows APIs and internal Tk APIs.
+	* win/tclWinPort.h: Revert <tchar.h> related changes made to improve
+	Cygwin support on 2001-07-18. This change ended up breaking the VC++
+	build because of conflicts between Windows APIs and internal Tk APIs.
 
 2001-08-01  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* unix/tclUnixFCmd.c: minor casts to eliminate warnings. (lim)
-	[Patch: #440218]
+	[Patch 440218]
 
-	* tests/parseOld.test: changed some tests that required
-	testwordend to exist to skip in a proper tcltest manner.
-	[Bug: #442663]
+	* tests/parseOld.test: changed some tests that required testwordend to
+	exist to skip in a proper tcltest manner. [Bug 442663]
 
-	* library/http/http.tcl (http::mapReply): the regsub'ing of \n and
-	\t to escape them was unnecessary.
+	* library/http/http.tcl (http::mapReply): the regsub'ing of \n and \t
+	to escape them was unnecessary.
 
 2001-07-31  Vince Darley <vincentdarley@users.sourceforge.net>
 
 	Changes from TIP#17 "Redo Tcl's filesystem"
 	The following files were impacted:
-	* doc/Access.3: 
-	* doc/FileSystem.3: 
-	* doc/OpenFileChnl.3: 
-	* doc/file.n: 
-	* doc/glob.n: 
-	* generic/tcl.decls: 
-	* generic/tcl.h: 
-	* generic/tclCmdAH.c: 
-	* generic/tclCmdIL.c: 
-	* generic/tclCmdMZ.c: 
-	* generic/tclDate.c: 
-	* generic/tclDecls.h: 
-	* generic/tclEncoding.c: 
-	* generic/tclFCmd.c: 
-	* generic/tclFileName.c: 
-	* generic/tclGetDate.y: 
-	* generic/tclIO.c: 
-	* generic/tclIOCmd.c: 
-	* generic/tclIOUtil.c: 
-	* generic/tclInt.decls: 
-	* generic/tclInt.h: 
-	* generic/tclIntDecls.h: 
-	* generic/tclLoad.c: 
-	* generic/tclStubInit.c: 
-	* generic/tclTest.c: 
-	* generic/tclUtil.c: 
-	* library/init.tcl: 
-	* mac/tclMacFCmd.c: 
-	* mac/tclMacFile.c: 
-	* mac/tclMacInit.c: 
-	* mac/tclMacPort.h: 
-	* mac/tclMacResource.c: 
-	* mac/tclMacTime.c: 
-	* tests/cmdAH.test: 
-	* tests/event.test: 
-	* tests/fCmd.test: 
-	* tests/fileName.test: 
-	* tests/io.test: 
-	* tests/ioCmd.test: 
-	* tests/proc-old.test: 
-	* tests/registry.test: 
-	* tests/unixFCmd.test: 
-	* tests/winDde.test: 
-	* tests/winFCmd.test: 
-	* unix/mkLinks: 
-	* unix/tclUnixFCmd.c: 
-	* unix/tclUnixFile.c: 
-	* unix/tclUnixInit.c: 
-	* unix/tclUnixPipe.c: 
-	* win/tclWinFCmd.c: 
-	* win/tclWinFile.c: 
-	* win/tclWinInit.c: 
-	* win/tclWinPipe.c
+	* doc/Access.3:
+	* doc/FileSystem.3:
+	* doc/OpenFileChnl.3:
+	* doc/file.n:
+	* doc/glob.n:
+	* generic/tcl.decls:
+	* generic/tcl.h:
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclDate.c:
+	* generic/tclDecls.h:
+	* generic/tclEncoding.c:
+	* generic/tclFCmd.c:
+	* generic/tclFileName.c:
+	* generic/tclGetDate.y:
+	* generic/tclIO.c:
+	* generic/tclIOCmd.c:
+	* generic/tclIOUtil.c:
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclLoad.c:
+	* generic/tclStubInit.c:
+	* generic/tclTest.c:
+	* generic/tclUtil.c:
+	* library/init.tcl:
+	* mac/tclMacFCmd.c:
+	* mac/tclMacFile.c:
+	* mac/tclMacInit.c:
+	* mac/tclMacPort.h:
+	* mac/tclMacResource.c:
+	* mac/tclMacTime.c:
+	* tests/cmdAH.test:
+	* tests/event.test:
+	* tests/fCmd.test:
+	* tests/fileName.test:
+	* tests/io.test:
+	* tests/ioCmd.test:
+	* tests/proc-old.test:
+	* tests/registry.test:
+	* tests/unixFCmd.test:
+	* tests/winDde.test:
+	* tests/winFCmd.test:
+	* unix/mkLinks:
+	* unix/tclUnixFCmd.c:
+	* unix/tclUnixFile.c:
+	* unix/tclUnixInit.c:
+	* unix/tclUnixPipe.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c:
+	* win/tclWinInit.c:
+	* win/tclWinPipe.c:
 
 2001-07-24  Mo DeJong  <mdejong@redhat.com>
 
-	* win/tclWinThrd.c (Tcl_CreateThread): Close Windows
-	HANDLE returned by _beginthreadex. The MS documentation
-	states that this handle is not closed by a later call to
-	_endthreadex.
+	* win/tclWinThrd.c (Tcl_CreateThread): Close Windows HANDLE returned
+	by _beginthreadex. The MS documentation states that this handle is not
+	closed by a later call to _endthreadex.
 
 2001-07-21  Don Porter  <dgp@users.sourceforge.net>
 
 	* doc/pkgMkindex.n:
-	* library/package.tcl:  Corrected documentation and usage
-	message of [pkg_mkIndex].
+	* library/package.tcl:  Corrected documentation and usage message of
+	[pkg_mkIndex].
 
 2001-07-18  Mo DeJong  <mdejong@redhat.com>
 
-	* generic/tclPlatDecls.h: Define TCHAR by including
-	windows.h instead of tchar.h since Cygwin does not
-	support the tchar.h header. Include CHECK_UNICODE_CALLS
-	logic from tclWinPort.h.
-	* win/tclWinPort.h: Remove CHECK_UNICODE_CALLS logic.
-	Remove include of windows.h since this now done it
-	tclPlatDecls.h.
+	* generic/tclPlatDecls.h: Define TCHAR by including windows.h instead
+	of tchar.h since Cygwin does not support the tchar.h header. Include
+	CHECK_UNICODE_CALLS logic from tclWinPort.h.
+	* win/tclWinPort.h: Remove CHECK_UNICODE_CALLS logic. Remove include
+	of windows.h since this now done it tclPlatDecls.h.
 	* win/tclWinReg.c: Remove duplicate include of windows.h.
 
 2001-07-18  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* generic/tclIO.c: Aftermath to [SF #427196]. Squash empty buffers
-	  if they are smaller than the requested buffersize, to prevent
-	  reusage of old buffers and to honor changes in the requested
-	  buffersize made by the user.
+	* generic/tclIO.c: Aftermath to [Bug 427196]. Squash empty buffers if
+	they are smaller than the requested buffersize, to prevent reusage of
+	old buffers and to honor changes in the requested buffersize made by
+	the user.
 
 2001-07-17  Mo DeJong  <mdejong@redhat.com>
 
-	* win/tclWinFile.c (TclpReadlink): Add Cygwin specific definition
-	for the TclpReadlink function. This method implements reading of
-	symbolic links when build with Cygwin.
+	* win/tclWinFile.c (TclpReadlink): Add Cygwin specific definition for
+	the TclpReadlink function. This method implements reading of symbolic
+	links when build with Cygwin.
 
 2001-07-17  Mo DeJong  <mdejong@redhat.com>
 
-	* win/tclWinPort.h: Add Cygwin specific defines for environ
-	and timezone variables.
+	* win/tclWinPort.h: Add Cygwin specific defines for environ and
+	timezone variables.
 
 2001-07-17  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
-	* generic/tclIO.c (GetInput): Fixed [SF #427196]. Memory was
-	  overwritten because a buffer was used after a change of the
-	  requested buffersize together with that requested buffersize and
-	  not its actual size, which was smaller. Note that the continous
-	  reuse of the smaller buffer negatively impacts performance. The
-	  system never allocates a buffer with the newly requested bigger
-	  buffersize.
+	* generic/tclIO.c (GetInput): Fixed [Bug 427196]. Memory was
+	overwritten because a buffer was used after a change of the requested
+	buffersize together with that requested buffersize and not its actual
+	size, which was smaller. Note that the continous reuse of the smaller
+	buffer negatively impacts performance. The system never allocates a
+	buffer with the newly requested bigger buffersize.
 
 2001-07-16  Mo DeJong  <mdejong@redhat.com>
 
-	* generic/tcl.h: Define __WIN32__ when
-	__CYGWIN__ or __MINGW32__ is defined.
-	* generic/tclAlloc.c: Define caddr_t when
-	compiling with VC++ or mingw. This type is
-	already defined when compiling with Cygwin.
+	* generic/tcl.h: Define __WIN32__ when __CYGWIN__ or __MINGW32__ is
+	defined.
+	* generic/tclAlloc.c: Define caddr_t when compiling with VC++ or
+	mingw. This type is already defined when compiling with Cygwin.
 
 2001-07-16  Mo DeJong  <mdejong@redhat.com>
 
@@ -2571,9 +2491,9 @@
 	* win/tclWinPort.h:
 	* win/tclWinSerial.c:
 	* win/tclWinThrd.c:
-	Remove unnecessary #includes of dos.h, direct.h,
-	and tchar.h. This will help the Cygwin porting
-	effort since these headers do not exist under Cygwin.
+	Remove unnecessary #includes of dos.h, direct.h, and tchar.h. This
+	will help the Cygwin porting effort since these headers do not exist
+	under Cygwin.
 
 2001-07-16  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -2581,74 +2501,70 @@
 	just the TerminateThread call and waiting for termination. (jsmith)
 
 	* generic/tclCmdMZ.c: Removed extra copy of the SCAN_* macros
-	#defined in generic/tclScan.c. (porter) [Bug 441230]
+	#defined in generic/tclScan.c. [Bug 441230] (porter)
 
 2001-07-12  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tests/unixInit.test (unixInit-2.8): Added extra constraint,
-	notInstalledInTmp, to stop this test from damaging installations
-	in /tmp; not much fun to have to reinstall the Tcl library every
-	time you run the test suite!
+	notInstalledInTmp, to stop this test from damaging installations in
+	/tmp; not much fun to have to reinstall the Tcl library every time you
+	run the test suite!
 
-	* tests/subst.test (subst-10.*): Updated tests to check new
-	behaviour for 'break' in command substitutions.
+	* tests/subst.test (subst-10.*): Updated tests to check new behaviour
+	for 'break' in command substitutions.
 	(subst-1.2,subst-7.1): Error messages changed.
 	* doc/SubstObj.3: New file, to document Tcl_SubstObj.
-	* doc/subst.n: Improved and updated documentation for 'subst' to
-	help support the changed behaviour.
+	* doc/subst.n: Improved and updated documentation for 'subst' to help
+	support the changed behaviour.
 	* generic/tcl.decls (generic-437): Declaration for Tcl_SubstObj
 	* generic/tcl.h (TCL_SUBST_*): Added flags for Tcl_SubstObj.
-	* generic/tclCmdMZ.c (Tcl_SubstObj,Tcl_SubstObjCmd): Divided into
-	two parts to allow people to access the innards of 'subst' and
-	changed the behaviour when command substitutions do a 'break' to
-	be different from 'continue'.  Also now works with objects, which
-	allows for some nifty optimisations with variable substitutions
-	and a slight improvement with command substitutions.  [TIP#36]
+	* generic/tclCmdMZ.c (Tcl_SubstObj,Tcl_SubstObjCmd): Divided into two
+	parts to allow people to access the innards of 'subst' and changed the
+	behaviour when command substitutions do a 'break' to be different from
+	'continue'. Also now works with objects, which allows for some nifty
+	optimisations with variable substitutions and a slight improvement
+	with command substitutions. [TIP#36]
 
 2001-07-10  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/Makefile.in: Add AR variable for use in STLIB_LD.
 	* unix/configure: Regen.
-	* unix/configure.in: Use STLIB_LD when defining MAKE_LIB
-	and MAKE_STUB_LIB. Subst RANLIB and AR.
-	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Add doc comment about
-	STLIB_LD command. Check ${AR} env var when setting
-	STLIB_LD and delay evaluation until make time.
+	* unix/configure.in: Use STLIB_LD when defining MAKE_LIB and
+	MAKE_STUB_LIB. Subst RANLIB and AR.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Add doc comment about STLIB_LD
+	command. Check ${AR} env var when setting STLIB_LD and delay
+	evaluation until make time.
 	* win/configure: Regen.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Delay evaluation of
-	${AR} in STLIB_LD and add flags to better match the
-	Unix implementation. Don't bother defining AR when
-	using VC++ since it is not used.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Delay evaluation of ${AR} in STLIB_LD
+	and add flags to better match the Unix implementation. Don't bother
+	defining AR when using VC++ since it is not used.
 
 2001-07-06  Mo DeJong  <mdejong@redhat.com>
 
 	* win/configure: Regen.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Pass -e _WinMain@16 in
-	addition to the -mwindows flag to work around a problem
-	with ld when it incorrectly use main() as the executable
-	entry point when both WinMain() and main() are available.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Pass -e _WinMain@16 in addition to
+	the -mwindows flag to work around a problem with ld when it
+	incorrectly use main() as the executable entry point when both
+	WinMain() and main() are available.
 
 2001-07-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/cmdAH.test: Added leading zero to file modes to work
-	around fault in HPUX strtol() which ignores the base parameter
-	[Bug #438808]
+	* tests/cmdAH.test: Added leading zero to file modes to work around
+	fault in HPUX strtol() which ignores the base parameter. [Bug 438808]
 
 2001-07-05  Mo DeJong  <mdejong@redhat.com>
 
-	* win/Makefile.in: Subst DEPARG directly instead
-	of relying on a variable. This will make Cygwin
-	builds faster since an extra exec will be avoided.
+	* win/Makefile.in: Subst DEPARG directly instead of relying on a
+	variable. This will make Cygwin builds faster since an extra exec will
+	be avoided.
 	* win/configure: Regen.
 	* win/configure.in: Subst DEPARG.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Move AC_MSG_CHECKING
-	after the AC_CHECK_PROG so that status messages do
-	not get mixed together. Set DEPARG based on the
-	results of the cygpath check so that we avoid using
-	an extra exec when it is not needed. Use ac_cv_cygwin
-	status flag instead of looking at the output of
-	gcc -v, which works in the case where -mno-cygwin is
-	set in the CFLAGS.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Move AC_MSG_CHECKING after the
+	AC_CHECK_PROG so that status messages do not get mixed together. Set
+	DEPARG based on the results of the cygpath check so that we avoid
+	using an extra exec when it is not needed. Use ac_cv_cygwin status
+	flag instead of looking at the output of gcc -v, which works in the
+	case where -mno-cygwin is set in the CFLAGS.
 
 2001-07-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -2663,32 +2579,30 @@
 	* win/Makefile.in: Remove PATHTYPE variable.
 	* win/configure: Regen.
 	* win/configure.in: Don't subst PATHTYPE.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Remove PATHTYPE
-	variable. Set CYGPATH to "cygpath -w" if the
-	cygpath executable is found on the path. This
-	approach works for native Cygwin builds and
-	cross compiles.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Remove PATHTYPE variable. Set CYGPATH
+	to "cygpath -w" if the cygpath executable is found on the path. This
+	approach works for native Cygwin builds and cross compiles.
 
 2001-07-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tests/var.test:
 	* generic/tclVar.c (Tcl_VariableObjCmd): added patch to check for
-	number of args. [Patch #426038]
+	number of args. [Patch 426038]
 
 	* generic/tclVar.c (Tcl_GetVar2Ex): added ability to recognize
-	TCL_TRACE_READS flags to cause creation of part1 in TclLookupVar
-	to make sure newly created array will get read traces triggered
-	appropriately.  This is called by Tcl_ObjGetVar2, Tcl_GetVar, and
+	TCL_TRACE_READS flags to cause creation of part1 in TclLookupVar to
+	make sure newly created array will get read traces triggered
+	appropriately. This is called by Tcl_ObjGetVar2, Tcl_GetVar, and
 	Tcl_GetVar2.
-	(TclSetIndexedScalar, TclSetElementOfIndexedArray): added read
-	trace triggering for lappend case.
-	(Tcl_LappendObjCmd): pass TCL_TRACE_READS to Tcl_ObjGetVar2 to
-	trigger possible read traces for new arrays.
+	(TclSetIndexedScalar, TclSetElementOfIndexedArray): added read trace
+	triggering for lappend case.
+	(Tcl_LappendObjCmd): pass TCL_TRACE_READS to Tcl_ObjGetVar2 to trigger
+	possible read traces for new arrays.
 
 	* generic/tclExecute.c (TclExecuteByteCode): added TCL_TRACE_READS
-	flag to INST_LAPPEND(_ARRAY)_STK case to trigger read traces for
-	newly created arrays.  Removed unnecessary #ifdef for
-	TCL_COMPILE_DEBUG in INST_LOAD_SCALAR1 case.
+	flag to INST_LAPPEND(_ARRAY)_STK case to trigger read traces for newly
+	created arrays. Removed unnecessary #ifdef for TCL_COMPILE_DEBUG in
+	INST_LOAD_SCALAR1 case.
 
 	* tests/append.test:
 	* tests/appendComp.test: added tests for read trace triggering for
@@ -2696,98 +2610,96 @@
 
 2001-07-03  Mo DeJong  <mdejong@redhat.com>
 
-	* tests/clock.test (clock-2.5): Adjust test so that it passes
-	when the time slice is 60 msecs, now passes under Windows 98.
+	* tests/clock.test (clock-2.5): Adjust test so that it passes when the
+	time slice is 60 msecs, now passes under Windows 98.
 
 2001-07-03  Mo DeJong  <mdejong@redhat.com>
 
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Don't pass the v flag
-	to ${AR} when using gcc, verbose output is not needed.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Don't pass the v flag to ${AR} when
+	using gcc, verbose output is not needed.
 
 2001-07-03  Don Porter  <dgp@users.sourceforge.net>
 
 	* tests/unixInit.test (unixInit-2.8):  Changed test back to using
-	installation layout, adding comments explaining why the test writes
-	to the directories it does, and checks to avoid destroying other
-	files in /tmp.
+	installation layout, adding comments explaining why the test writes to
+	the directories it does, and checks to avoid destroying other files in
+	/tmp.
 
 2001-07-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tests/unixInit.test (unixInit-1.2): Fixed faults reported in
-	Bug#438070 - well, at least enough to work on Solaris - and added
+	[Bug 438070] - well, at least enough to work on Solaris - and added
 	comments that should make what is going on in the test clearer.
 
 2001-07-02  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tests/util.test: added util-4.6
-	* generic/tclUtil.c (Tcl_ConcatObj): Corrected walking backwards
-	over utf-8 chars. [Bug #227512]
+	* generic/tclUtil.c (Tcl_ConcatObj): Corrected walking backwards over
+	utf-8 chars. [Bug 227512]
 
 2001-07-02  Don Porter  <dgp@users.sourceforge.net>
 
-	* tests/unixInit.test (unixInit-2.8):  Corrected test for all
-	absolute pathnames in library path when executable is installed
-	near root directory to use correct development directory layout.
-	[Bug 438014]
+	* tests/unixInit.test (unixInit-2.8):  Corrected test for all absolute
+	pathnames in library path when executable is installed near root
+	directory to use correct development directory layout. [Bug 438014]
 
-	* tests/unixInit.test (unixInit-2.9):  
+	* tests/unixInit.test (unixInit-2.9):
 	* unix/tclUnixInit.c (TclpInitLibraryPath):
 	* win/tclWinInit.c (TclpInitLibraryPath):  Corrected buggy
-	construction of search path entries relative to executable.
-	Added test for bad construction.  [Bug 438014]
+	construction of search path entries relative to executable. Added test
+	for bad construction. [Bug 438014]
 
 2001-06-28  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclNamesp.c: Correction to faulty patch from [Bug: 231259] 
+	* generic/tclNamesp.c: Correction to faulty patch from [Bug 231259]
 
 2001-06-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/unixInit.test (unixInit-1.2): Modified so as not to
-	require a local echo service, which fails on many systems which
-	have that turned off for security reasons...
+	* tests/unixInit.test (unixInit-1.2): Modified so as not to require a
+	local echo service, which fails on many systems which have that turned
+	off for security reasons...
 
 2001-06-27  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclInt.h:
 	* generic/tclObj.c:
 	* unix/Makefile.in: added a -DPURIFY mode that makes Tcl_Obj's
-	allocated and free singularly (instead of in alloc in blocks and
-	never free) to allow checkers like Purify to operate better.
+	allocated and free singularly (instead of in alloc in blocks and never
+	free) to allow checkers like Purify to operate better.
 
 	* library/encoding/koi8-u.enc: added koi8-u (Ukranian variant)
 	encoding.
 
 	* tests/subst.test:
-	* generic/tclUtf.c (Tcl_UtfBackslash): Corrected backslash
-	handling of multibyte utf-8 chars. [Bug #217987]
+	* generic/tclUtf.c (Tcl_UtfBackslash): Corrected backslash handling of
+	multibyte utf-8 chars. [Bug 217987]
 
-	* generic/tclCmdIL.c (InfoProcsCmd): fixed potential mem leak in
-	info procs that created objects without using them.
+	* generic/tclCmdIL.c (InfoProcsCmd): fixed potential mem leak in info
+	procs that created objects without using them.
 
 	* generic/tclCompCmds.c (TclCompileStringCmd): fixed mem leak when
 	string command failed to parse the subcommand.
 
 	* doc/interp.n:
-	* doc/unknown.n: updated notes about what is in a safe interp.
-	[Bug #218605]
+	* doc/unknown.n: updated notes about what is in a safe interp. [Bug
+	218605]
 
 2001-06-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/event.test (event-11.5): Removed hard-coded port number
-	which could fail on some systems.  [Bug #436727]
+	* tests/event.test (event-11.5): Removed hard-coded port number which
+	could fail on some systems. [Bug 436727]
 
 2001-06-26  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/Makefile.in:
-	* win/Makefile.in: Add `make shell` target. This target
-	will set the proper env vars before invoking tclsh
-	from the build directory.
+	* win/Makefile.in: Add `make shell` target. This target will set the
+	proper env vars before invoking tclsh from the build directory.
 
 2001-06-26  Mo DeJong  <mdejong@redhat.com>
 
-	* win/Makefile.in: Use : to separate VPATH entries. This
-	works for both Cygwin builds and cross builds, the VPSEP
-	variable is simply unneeded complexity.
+	* win/Makefile.in: Use : to separate VPATH entries. This works for
+	both Cygwin builds and cross builds, the VPSEP variable is simply
+	unneeded complexity.
 	* win/configure: Regen.
 	* win/configure.in: Don't subst VPSEP.
 	* win/tcl.m4 (SC_CONFIG_CFLAGS): Remove VPSEP variable.
@@ -2795,17 +2707,17 @@
 2001-06-26  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/configure: Regen.
-	* unix/configure.in: Fix last checkin by removing
-	export since that only works in bash.
+	* unix/configure.in: Fix last checkin by removing export since that
+	only works in bash.
 	* win/configure: Regen.
 	* win/configure.in: Ditto.
 
 2001-06-26  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/configure: Regen.
-	* unix/configure.in: Set CFLAGS to "" if the user
-	did not set CFLAGS in the env. This keeps AC_PROG_CC
-	from adding "-g -O2" to the CFLAGS by default.
+	* unix/configure.in: Set CFLAGS to "" if the user did not set CFLAGS
+	in the env. This keeps AC_PROG_CC from adding "-g -O2" to the CFLAGS
+	by default.
 	* win/configure: Regen.
 	* win/configure.in: Ditto.
 
@@ -2813,28 +2725,27 @@
 
 	* win/configure: Regen.
 	* win/configure.in: Use RC_DEFINE flag from tcl.m4.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Set RC_DEFINE
-	flag based on the compiler in use.
-	
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Set RC_DEFINE flag based on the
+	compiler in use.
+
 2001-06-25  Mo DeJong  <mdejong@redhat.com>
 
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Link to the
-	imm32 library when building with mingw gcc.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Link to the imm32 library when
+	building with mingw gcc.
 
 2001-06-25  Mo DeJong  <mdejong@redhat.com>
 
 	* win/configure: Regen.
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): When building with
-	gcc, don't attempt to link with LD or support dllwrap.
-	Simply require a recent version of Cygwin gcc or Mingw
-	gcc that supports -shared. When linking, use gcc instead
-	of ld since gcc automatically includes libs like -lmsvcrt.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): When building with gcc, don't attempt
+	to link with LD or support dllwrap. Simply require a recent version of
+	Cygwin gcc or Mingw gcc that supports -shared. When linking, use gcc
+	instead of ld since gcc automatically includes libs like -lmsvcrt.
 
 2001-06-22  Mo DeJong  <mdejong@redhat.com>
 
 	* win/configure: Regen.
-	* win/configure.in: Add resource compiler fix from
-	8.3.3 to fix compiling with mingw.
+	* win/configure.in: Add resource compiler fix from 8.3.3 to fix
+	compiling with mingw.
 
 2001-06-22  Mo DeJong  <mdejong@redhat.com>
 
@@ -2843,63 +2754,61 @@
 
 2001-06-22  Mo DeJong  <mdejong@redhat.com>
 
-	* unix/Makefile.in: Set CFLAGS to @CFLAGS@ and @CFLAGS_DEFAULT@.
-	Set LDFLAGS to @LDFLAGS@ and @LDFLAGS_DEFAULT@. Add LDFLAGS_DEBUG
-	and LDFLAGS_OPTIMIZE to match the way CFLAGS_DEFAULT works.
-	This will support user set CFLAGS or LDFLAGS at configure time.
+	* unix/Makefile.in: Set CFLAGS to @CFLAGS@ and @CFLAGS_DEFAULT@. Set
+	LDFLAGS to @LDFLAGS@ and @LDFLAGS_DEFAULT@. Add LDFLAGS_DEBUG and
+	LDFLAGS_OPTIMIZE to match the way CFLAGS_DEFAULT works. This will
+	support user set CFLAGS or LDFLAGS at configure time.
 	* unix/configure: Regen.
 	* unix/configure.in: Don't set CFLAGS to CFLAGS_DEFAULT, instead
-	subst CFLAGS_DEFAULT into the Makefile. Add AC_SUBST for CFLAGS_DEFAULT,
-	LDFLAGS_DEFAULT, LDFLAGS_DEBUG, and LDFLAGS_OPTIMIZE.
-	* unix/tcl.m4 (SC_ENABLE_SYMBOLS): Modify LDFLAGS_DEFAULT so that
-	it uses a Makefile variable just like CFLAGS_DEFAULT.
-	* win/Makefile.in: Set CFLAGS to @CFLAGS@ and @CFLAGS_DEFAULT@.
-	Set LDFLAGS to @LDFLAGS@ and @LDFLAGS_DEFAULT@.
-	This will support user set CFLAGS or LDFLAGS at configure time.
+	subst CFLAGS_DEFAULT into the Makefile. Add AC_SUBST for
+	CFLAGS_DEFAULT, LDFLAGS_DEFAULT, LDFLAGS_DEBUG, and LDFLAGS_OPTIMIZE.
+	* unix/tcl.m4 (SC_ENABLE_SYMBOLS): Modify LDFLAGS_DEFAULT so that it
+	uses a Makefile variable just like CFLAGS_DEFAULT.
+	* win/Makefile.in: Set CFLAGS to @CFLAGS@ and @CFLAGS_DEFAULT@. Set
+	LDFLAGS to @LDFLAGS@ and @LDFLAGS_DEFAULT@. This will support user set
+	CFLAGS or LDFLAGS at configure time.
 	* win/configure: Regen.
 	* win/configure.in: Don't set CFLAGS or LDFLAGS, instead subst
 	CFLAGS_DEFAULT and LDFLAGS_DEFAULT into the Makefile.
-	* win/tcl.m4 (SC_ENABLE_SYMBOLS): Modify LDFLAGS_DEFAULT so that
-	it uses a Makefile variable just like CFLAGS_DEFAULT.
+	* win/tcl.m4 (SC_ENABLE_SYMBOLS): Modify LDFLAGS_DEFAULT so that it
+	uses a Makefile variable just like CFLAGS_DEFAULT.
 
 2001-06-22  Mo DeJong  <mdejong@redhat.com>
 
 	* win/configure:
-	* win/tcl.m4 (SC_CONFIG_CFLAGS): Don't set LDFLAGS_DEBUG
-	to -g or LDFLAGS_OPTIMIZE to -O when compiling with gcc.
-	These flags are not needed and can cause problems with
-	the Cygwin version of ld.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Don't set LDFLAGS_DEBUG to -g or
+	LDFLAGS_OPTIMIZE to -O when compiling with gcc. These flags are not
+	needed and can cause problems with the Cygwin version of ld.
 
 2001-06-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/unixInit.test (unixInit-1.2,unixInit-2.8): Added test for
-	code described below, and fixed a couple of errors that caused
-	problems during testing; the code to determine the installedTcl
-	constraint was wrong, and test unixInit-2.8 assumed that /tmp/lib
-	was free for use and could be deleted, which clashed nastily with
-	my installation and made other tests fail unnecessarily!
+	* tests/unixInit.test (unixInit-1.2,unixInit-2.8): Added test for code
+	described below, and fixed a couple of errors that caused problems
+	during testing; the code to determine the installedTcl constraint was
+	wrong, and test unixInit-2.8 assumed that /tmp/lib was free for use
+	and could be deleted, which clashed nastily with my installation and
+	made other tests fail unnecessarily!
 
 	* unix/tclUnixChan.c (TtyInit,TclpOpenFileChannel,
-	Tcl_MakeFileChannel,TclpGetDefaultStdChannel): Alterations so that
-	the standard channels - stdin, stdout and stderr - have the
-	correct type and fconfigure options.  This required making the
-	initialisation of serial lines a little more sophisticated to
-	make the console behave correctly in interactive mode... [Bug
-	#219137 and duplicates]
+	(Tcl_MakeFileChannel,TclpGetDefaultStdChannel): Alterations so that
+	the standard channels - stdin, stdout and stderr - have the correct
+	type and fconfigure options. This required making the initialisation
+	of serial lines a little more sophisticated to make the console behave
+	correctly in interactive mode... [Bug 219137 and duplicates]
 
 2001-06-16  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/tclInt.decls:
-	* generic/tclInt.h: 
+	* generic/tclInt.h:
 	* generic/tclPanic.c (Tcl_PanicVA):
 	* mac/tclMacAppInit.c (main):
 	* mac/tclMacPanic.c (TclpPanic):
 	* unix/tclUnixPort.h:
-	* win/tclWinPort.h: Replaced TclMacSetPanic with TclpPanic
-	for setting a platform-specific panic handler.  TclpPanic
-	is NULL on Unix and Windows.  Fixes broken wish on Mac due
-	to earlier patches.  [Patch 415648]
-	
+	* win/tclWinPort.h: Replaced TclMacSetPanic with TclpPanic for setting
+	a platform-specific panic handler. TclpPanic is NULL on Unix and
+	Windows. Fixes broken wish on Mac due to earlier patches. [Patch
+	415648]
+
 	* generic/tclIntPlatDecls.h:
 	* generic/tclStubInit.c: `make gentubs` after above changes.
 
@@ -2912,9 +2821,9 @@
 
 2001-06-12  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/regexp.test (regexp-18.12): 
+	* tests/regexp.test (regexp-18.12):
 	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): Fixed so that submatches
-	that do not match always have index pair {-1 -1} [Bug #219232]
+	that do not match always have index pair {-1 -1} [Bug 219232]
 
 2001-06-08  Don Porter  <dgp@users.sourceforge.net>
 
@@ -2927,11 +2836,10 @@
 	* mac/tclMacAppInit.c (main):
 	* mac/tclMacBOAAppInit.c (main):
 	* mac/tclMacPanic.c: Modified special Mac implementations of
-	Tcl_*Panic* to be exact copies of the generic implementations.
-	Added TclMacSetPanic.  The generic implementations should be
-	used directly, rather than copies, but that requires further
-	changes by someone familiar with the Mac build systems.
-	[Patch 415648]
+	Tcl_*Panic* to be exact copies of the generic implementations. Added
+	TclMacSetPanic. The generic implementations should be used directly,
+	rather than copies, but that requires further changes by someone
+	familiar with the Mac build systems. [Patch 415648]
 
 	* generic/tclDecls.h:
 	* generic/tclIntPlatDecls.h:
@@ -2939,24 +2847,24 @@
 
 	* doc/Panic.3:
 	* unix/mkLinks:  New file documenting Tcl_*Panic* public interfaces,
-	followed by `make mklinks`.  [Patch 415648, Bug 219170, Bug 414936]
+	followed by `make mklinks`. [Patch 415648, Bug 219170, Bug 414936]
 
 2001-06-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclUtil.c (Tcl_DStringAppendElement): patch to save an
-	extra strlen call.  [Bug #428572]
+	extra strlen call. [Bug 428572]
 
 2001-05-30  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* generic/tclExecute.c (TclExecuteByteCode): Added two casts to
-	INST_STR_CMP implementation to get rid of a couple warnings from
-	the SUNWspro C compiler.
-
-	* generic/tclBasic.c (Tcl_GetMathFuncInfo,Tcl_ListMathFuncs): 
-	* generic/tclCmdIL.c (Tcl_InfoObjCmd,InfoFunctionsCmd): 
-	* generic/tcl.decls (generic table, positions 435+436): 
-	* tests/info.test: 
-	* doc/CrtMathFnc.3: 
+	INST_STR_CMP implementation to get rid of a couple warnings from the
+	SUNWspro C compiler.
+
+	* generic/tclBasic.c (Tcl_GetMathFuncInfo,Tcl_ListMathFuncs):
+	* generic/tclCmdIL.c (Tcl_InfoObjCmd,InfoFunctionsCmd):
+	* generic/tcl.decls (generic table, positions 435+436):
+	* tests/info.test:
+	* doc/CrtMathFnc.3:
 	* doc/info.n: Changes due to TIP #15 "Functions to List and Detail
 	Math Functions"
 
@@ -2968,32 +2876,31 @@
 
 	* generic/regc_locale.c: updated character class range data for
 	Unicode v3.1.0 compliance.
-	* generic/tclUniData.c: regenerated from Unicode v3.1.0 data file
-	(new as of 2001-05-16).  This brings Tcl to current unicode
-	compliance.
+	* generic/tclUniData.c: regenerated from Unicode v3.1.0 data file (new
+	as of 2001-05-16). This brings Tcl to current unicode compliance.
 
 	* tests/utf.test: added tests to check unicode 3 compliance
 
 	* unix/Makefile.in (tclUtf.o): added tclUniData.c dependency.
 
-	* tools/uniClass.tcl: added comments to output format and the
-	script for clarification.
+	* tools/uniClass.tcl: added comments to output format and the script
+	for clarification.
 
-	* tools/uniParse.tcl: corrected filename output and GetDelta macro
-	to use 'info' as param (was 'infO')
+	* tools/uniParse.tcl: corrected filename output and GetDelta macro to
+	use 'info' as param (was 'infO')
 
 2001-05-26  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* generic/tclVar.c (tclArraySearchType,SetArraySearchObj,
-	ParseSearchId): Added code to speed up array searching by reducing
+	(ParseSearchId): Added code to speed up array searching by reducing
 	the amount of parsing needed for searchIds.
 
-	* generic/tclObj.c (TclInitObjSubsystem): 
-	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct): 
-	* generic/tclNamesp.c (TclInitNamespaceSubsystem): 
+	* generic/tclObj.c (TclInitObjSubsystem):
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct):
+	* generic/tclNamesp.c (TclInitNamespaceSubsystem):
 	* generic/tclInt.h: Moved some Tcl_ObjType initialisation to
-	TclInitObjSubsystem to be with the bulk of the rest.
-	[Patch 424851] Committed by Miguel Sofer <mig@utdt.edu>
+	TclInitObjSubsystem to be with the bulk of the rest. [Patch 424851]
+	Committed by Miguel Sofer <mig@utdt.edu>
 
 2001-05-23  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -3015,31 +2922,29 @@
 	* library/encoding/iso8859-8.enc:
 	* library/encoding/iso8859-10.enc (new):
 	* library/encoding/iso8859-13.enc (new):
-	* library/encoding/iso8859-14.enc (new): updated encoding tables
-	based on http://www.unicode.org/Public/MAPPINGS/. (kuhn)
+	* library/encoding/iso8859-14.enc (new): updated encoding tables based
+	on http://www.unicode.org/Public/MAPPINGS/. (kuhn)
 
 2001-05-23  Mo DeJong  <mdejong@redhat.com>
 
-	* unix/tcl.m4 (SC_PATH_TCLCONFIG): Fix comments,
-	and typo in cached variable name.
+	* unix/tcl.m4 (SC_PATH_TCLCONFIG): Fix comments, and typo in cached
+	variable name.
 
 2001-05-23  Mo DeJong  <mdejong@redhat.com>
 
-	* unix/tcl.m4 (SC_LOAD_TKCONFIG):
-	Remove use of undefined TCLCONFIG variable and
-	call AC_MSG_RESULT to print the checking result.
+	* unix/tcl.m4 (SC_LOAD_TKCONFIG): Remove use of undefined TCLCONFIG
+	variable and call AC_MSG_RESULT to print the checking result.
 	* win/tcl.m4: Ditto.
 
 2001-05-22  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclObj.c (TclAllocateFreeObjects): simplified
-	objSizePlusPadding to use sizeof(Tcl_Obj) (max)
-	Corrected use of tclObjsAlloced/Freed/Shared in TCL_MEM_DEBUG
-	compile.
+	objSizePlusPadding to use sizeof(Tcl_Obj) (max) Corrected use of
+	tclObjsAlloced/Freed/Shared in TCL_MEM_DEBUG compile.
 
 2001-05-22  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclExecute.c: removed Tcl_DuplicateObj in INST_DUP 
+	* generic/tclExecute.c: removed Tcl_DuplicateObj in INST_DUP
 
 2001-05-21  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -3047,13 +2952,13 @@
 	getting affected by Windows env handling of empty valued elements.
 
 	* unix/tcl.m4: added more common install directories in which to
-	search for *Config.sh [Bug #419812]
+	search for *Config.sh. [Bug 419812]
 
-	* tests/cmdMZ.test (cmdMZ-1.4): added notLinux constraint to test
-	to prevent failure message on Linux due to OS caching bug.
+	* tests/cmdMZ.test (cmdMZ-1.4): added notLinux constraint to test to
+	prevent failure message on Linux due to OS caching bug.
 
-	* tests/httpd (httpdRespond): added response to timeout value in
-	query string.
+	* tests/httpd (httpdRespond): added response to timeout value in query
+	string.
 
 	* tests/http.test: removed unused notLinux constraint setting
 
@@ -3063,61 +2968,58 @@
 2001-05-19  Andreas Kupries <andreas_kupries@users.sourceforge.net>
 
 	* Note that "tclbench" (see project "tcllib") was extended with
-	  performance benchmarks for [fcopy] too.
+	performance benchmarks for [fcopy] too.
 
 	* doc/fcopy.n: Updated to reflect the extended behaviour of 'fcopy'.
 
-	* tests/io.test: Added tests 'io-52.9', 'io-52.10' and 'io-52.11'
-	  to test the handling of encodings by 'fcopy' / 'TclCopychannel'
-	  [Bug #209210].
+	* tests/io.test: Added tests 'io-52.9', 'io-52.10' and 'io-52.11' to
+	test the handling of encodings by 'fcopy' / 'TclCopychannel'. [Bug
+	209210]
 
-	* generic/tclIO.c: Split of both 'Tcl_ReadChars' and
-	  'Tcl_WriteChars' into a public error checking and an internal
-	  working part. The public functions now use the new internal
-	  ones. The new functions are 'DoReadChars' and 'DoWriteChars'.
-	  Extended 'CopyData' to use the new functions 'DoXChars' when
-	  required by the encodings on the input and output channels
-	  [Bug #209210].
+	* generic/tclIO.c: Split of both 'Tcl_ReadChars' and 'Tcl_WriteChars'
+	into a public error checking and an internal working part. The public
+	functions now use the new internal ones. The new functions are
+	'DoReadChars' and 'DoWriteChars'. Extended 'CopyData' to use the new
+	functions 'DoXChars' when required by the encodings on the input and
+	output channels. [Bug 209210]
 
 2001-05-16  Jeff Hobbs  <jeffh@ActiveState.com>
 
-	* library/history.tcl (tcl::HistAdd): prevent empty calls from
-	being added to the history (arndt)
+	* library/history.tcl (tcl::HistAdd): prevent empty calls from being
+	added to the history (arndt)
 
-	* tests/error.test: updated error-1.3 message to account for
-	string index being compiled at toplevel.
+	* tests/error.test: updated error-1.3 message to account for string
+	index being compiled at toplevel.
 	* tests/appendComp.test:
 	* tests/stringComp.test: new files for extended bytecode testing
 
 	* generic/tclBasic.c: added new CompileProc invocations to basic
 	command initialization.
 	* generic/tclCompCmds.c: added new compile commands for append,
-	lappend, lindex and llength.  Refactored set and incr compile
-	commands to use new TclPushVarName function for handling the
-	varname component during compilation (also used by append and
-	lappend).  Changed string compile command to compile toplevel code
-	as well (when possible).
+	lappend, lindex and llength. Refactored set and incr compile commands
+	to use new TclPushVarName function for handling the varname component
+	during compilation (also used by append and lappend). Changed string
+	compile command to compile toplevel code as well (when possible).
 	* generic/tclCompile.c: added new instruction enums
 	* generic/tclCompile.h: added debug info for new instructions
-	* generic/tclExecute.c (TclExecuteByteCode): moved elemPtr to
-	toplevel var (oft-used).  Added definitions for new bytecode
-	instructions INST_LIST_INDEX, INST_LIST_LENGTH, INST_APPEND_SCALAR1,
+	* generic/tclExecute.c (TclExecuteByteCode): moved elemPtr to toplevel
+	var (oft-used). Added definitions for new bytecode instructions
+	INST_LIST_INDEX, INST_LIST_LENGTH, INST_APPEND_SCALAR1,
 	INST_APPEND_SCALAR4, INST_APPEND_ARRAY1, INST_APPEND_ARRAY4,
 	INST_APPEND_ARRAY_STK, INST_APPEND_STK, INST_LAPPEND_SCALAR1,
 	INST_LAPPEND_SCALAR4, INST_LAPPEND_ARRAY1, INST_LAPPEND_ARRAY4,
 	INST_LAPPEND_ARRAY_STK, INST_LAPPEND_STK.
 	Refactored repititious code for reuse with INST_LOAD_STK (same as
-	INST_LOAD_SCALAR_STK), INST_STORE_STK (same as
-	INST_STORE_SCALAR_STK).
+	INST_LOAD_SCALAR_STK), INST_STORE_STK (same as INST_STORE_SCALAR_STK).
 	Updated INST_STR_CMP with style of fix of 2001-04-06 Fellows
-	[Bug #219201] as that fix only affected the runtime eval'ed
-	"string" (string compare is normally byte-compiled now).  We
-	may want to back these out for speed in the future, noting the
-	problems with \x00 comparisons in the docs.
+	[Bug 219201] as that fix only affected the runtime eval'ed "string"
+	(string compare is normally byte-compiled now). We may want to back
+	these out for speed in the future, noting the problems with \x00
+	comparisons in the docs.
 	* generic/tclInt.h: declarations for new compile commands.
 	* generic/tclVar.c: change TclGetIndexedScalar,
 	TclGetElementOfIndexedArray, TclSetElementOfIndexedArray and
-	TclSetIndexedScalar to use flags.  The Set functions now support
+	TclSetIndexedScalar to use flags. The Set functions now support
 	TCL_APPEND_ELEMENT and TCL_LIST_ELEMENT as well.
 	* generic/tclInt.decls:
 	* generic/tclIntDecls.h: minor signature changes for above.
@@ -3126,7 +3028,7 @@
 
 2001-05-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/console.n: Deleted.  Put it in the wrong source tree!  D'oh!
+	* doc/console.n: Deleted. Put it in the wrong source tree! D'oh!
 
 2001-05-15  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -3136,8 +3038,8 @@
 	* generic/tclStringObj.c (Tcl_GetUnicodeFromObj): new function to
 	parallel Tcl_GetStringFromObj (fix of an API oversight).
 
-	* unix/tclUnixPipe.c: updated pipeChannelType to
-	TCL_CHANNEL_VERSION_2 type specification.
+	* unix/tclUnixPipe.c: updated pipeChannelType to TCL_CHANNEL_VERSION_2
+	type specification.
 
 	* tests/fileName.test: corrected tests not to fail on win when a
 	C:/test dir exists.
@@ -3146,82 +3048,80 @@
 
 2001-05-15  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* tests/lindex.test: added test for nested braces [Patch: 423617]
+	* tests/lindex.test: added test for nested braces [Patch 423617]
 
 2001-05-15  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclInt.h
-	* generic/tclNamesp.c: invalidate all bytecodes in a namespace if
-	a new command shadows a bytecoded command.
-	* tests/namespace.test
-	Patched from [Bug: 231259] 
+	* generic/tclInt.h:
+	* generic/tclNamesp.c: invalidate all bytecodes in a namespace if a
+	new command shadows a bytecoded command.
+	* tests/namespace.test:
+	Patched from [Bug 231259]
 
 2001-05-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/console.n: Created.  It seems very odd to me that the
-	console implementation is part of the Tcl distribution and not
-	part of Tk, but given the location of the source, the
-	documentation must obviously match up...
+	* doc/console.n: Created. It seems very odd to me that the console
+	implementation is part of the Tcl distribution and not part of Tk, but
+	given the location of the source, the documentation must obviously
+	match up...
 
 2001-05-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): 
-	* tests/string.test (string-4.14): Negative string indices should
-	not be added as offsets to the result of [string first] but
-	instead be treated as referring to the start of the string.
-	[Bug: 423581]
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
+	* tests/string.test (string-4.14): Negative string indices should not
+	be added as offsets to the result of [string first] but instead be
+	treated as referring to the start of the string. [Bug 423581]
 
 2001-05-11  Mo DeJong  <mdejong@redhat.com>
 
-	* unix/Makefile.in: Add a LDFLAGS variable to the
-	Makefile instead of directly substing @LDFLAGS@.
+	* unix/Makefile.in: Add a LDFLAGS variable to the Makefile instead of
+	directly substing @LDFLAGS@.
 	* unix/configure: Regen.
-	* unix/tcl.m4: Fix CFLAGS_DEFAULT so that the name
-	of a Makefile variable is passed as @CFLAGS@.
-	* win/Makefile.in: Move the setting of CFLAGS
-	higher up in the Makefile.
+	* unix/tcl.m4: Fix CFLAGS_DEFAULT so that the name of a Makefile
+	variable is passed as @CFLAGS@.
+	* win/Makefile.in: Move the setting of CFLAGS higher up in the
+	Makefile.
 	* win/configure: Regen.
-	* win/configure.in: Use dnl to comment out macros
-	so that they are not accidently expanded.
-	* win/tcl.m4: Fix CFLAGS_DEFAULT so that the name
-	of a Makefile variable is passed as @CFLAGS@.
+	* win/configure.in: Use dnl to comment out macros so that they are not
+	accidently expanded.
+	* win/tcl.m4: Fix CFLAGS_DEFAULT so that the name of a Makefile
+	variable is passed as @CFLAGS@.
 
 2001-05-07  Miguel Sofer  <msofer@users.sourceforge.net>
 
 	* generic/tclExecute.c: insure different rand() seeds in different
-	threads [Bug 416643]
+	threads. [Bug 416643]
 
 2001-05-03  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* tests/tcltest.test: removed extraneous 'c' (doh!) [Bug: 414031]
 
-	* tools/tcltk-man2html.tcl: removed use of 'exec' for portability
-	and fixed up code.
+	* tools/tcltk-man2html.tcl: removed use of 'exec' for portability and
+	fixed up code.
 
 2001-05-03  Don Porter  <dgp@users.sourceforge.net>
 
 	* doc/library.n:
 	* library/init.tcl:
-	* tests/autoMkindex.t*: Modified [auto_import] to apply
-	pattern matching in the [namespace import] style.  [Bug 420186]
-	***POTENTIAL INCOMPATIBILITY*** for any callers of [auto_import]
-	from outside Tcl that expect the pattern matching to be like that
-	of [string match].
+	* tests/autoMkindex.t*: Modified [auto_import] to apply pattern
+	matching in the [namespace import] style. [Bug 420186]
+	***POTENTIAL INCOMPATIBILITY*** for any callers of [auto_import] from
+	outside Tcl that expect the pattern matching to be like that of
+	[string match].
 
 2001-05-03  Miguel Sofer  <msofer@users.sourceforge.net>
 
-	* generic/tclParse.c: 
-	* tests/namespace.test: Insure consistent behaviour of the
-	[unknown] command: when a command is unknown, it is always
-	processed by [::unknown], ignoring any namespace proc which
-	happens to be called "unknown" [Patch #421166, Bug #420507]
+	* generic/tclParse.c:
+	* tests/namespace.test: Insure consistent behaviour of the [unknown]
+	command: when a command is unknown, it is always processed by
+	[::unknown], ignoring any namespace proc which happens to be called
+	"unknown" [Patch 421166, Bug 420507]
 
 2001-05-02  Don Porter  <dgp@users.sourceforge.net>
 
-	* tools/genStubs.tcl: Add a package require of Tcl 8
-	at the beginning of the script so that the script
-	will print a descriptive error message when run
-	in an old Tcl 7 shell.
+	* tools/genStubs.tcl: Add a package require of Tcl 8 at the beginning
+	of the script so that the script will print a descriptive error
+	message when run in an old Tcl 7 shell.
 
 2001-04-27  Kevin Kenny	<kennykb@crd.ge.com>
 
@@ -3229,10 +3129,10 @@
 	* generic/tclInt.h:
 	* generic/tclCmdIL.c:
 	* generic/tclProc.c:
-	* generic/tclVar.c: Added another collection of missing CONSTs
-	related to TclGetNamespaceForQualName.
+	* generic/tclVar.c: Added another collection of missing CONSTs related
+	to TclGetNamespaceForQualName.
 	* generic/tclIntDecls.h: Regenerated.
-	
+
 2001-04-25  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/configure: Regen.
@@ -3245,9 +3145,9 @@
 2001-04-25  Mo DeJong  <mdejong@redhat.com>
 
 	* unix/configure: Regen.
-	* unix/configure.in: Use $@ in MAKE_LIB and MAKE_STUB_LIB
-	commands instead of using a delayed subst variable. Replace
-	instances of STUB_LIB_FILE with TCL_STUB_LIB_FILE.
+	* unix/configure.in: Use $@ in MAKE_LIB and MAKE_STUB_LIB commands
+	instead of using a delayed subst variable. Replace instances of
+	STUB_LIB_FILE with TCL_STUB_LIB_FILE.
 
 2001-04-25  Mo DeJong  <mdejong@redhat.com>
 
@@ -3259,19 +3159,20 @@
 2001-04-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tools/encoding/iso8859-15.txt:
-	* library/encoding/iso8859-15.enc: Oops! Got the full encoding
-	wrong.  Should be fixed now...
+	* library/encoding/iso8859-15.enc: Oops! Got the full encoding wrong.
+	Should be fixed now...
 
 	* tools/encoding/iso8859-15.txt:
 	* library/encoding/iso8859-15.enc:
-	* tools/tcl.wse.in: Added ISO 8859-15 (a.k.a. Latin-1 + Euro
-	currency symbol) support.
+	* tools/tcl.wse.in: Added ISO 8859-15 (a.k.a. Latin-1 + Euro currency
+	symbol) support.
 
 	* generic/tclNamesp.c:
-	* generic/tclBasic.c (TclRenameCommand): Missing CONST from
-	several declarations relating to use of TclGetNamespaceForQualName
+	* generic/tclBasic.c (TclRenameCommand): Missing CONST from several
+	declarations relating to use of TclGetNamespaceForQualName
 
 2001-04-24  Kevin B. Kenny    <kennykb@acm.org>
+
 	* doc/AssocData.3:
 	* doc/CrtCommand.3:
 	* doc/CrtMathFnc.3:
@@ -3285,18 +3186,18 @@
 	* generic/tcl.h:
 	* generic/tclInt.decls:
 	* generic/tclInt.h: (TIP #27) Another round of CONST changes, this
-	time adding CONST to the API's exported from tclBasic.c.
-	[Patch #415179]
-	***POTENTIAL INCOMPATIBILITY*** from 8.4a2, in which Vince
-	Darley's changes to command tracing were added.  A const has been
-	added to the type signature of one of the parameters to
-	Tcl_CommandTraceProc.
+	time adding CONST to the API's exported from tclBasic.c. [Patch
+	415179]
+	***POTENTIAL INCOMPATIBILITY*** from 8.4a2, in which Vince Darley's
+	changes to command tracing were added. A const has been added to the
+	type signature of one of the parameters to Tcl_CommandTraceProc.
 
 2001-04-10  Kevin B. Kenny    <kennykb@acm.org>
+
 	* unix/tclUnixTime.c: Altered code to use memcpy instead of
 	structure assigments in an effort to achieve better K&R
 	compatibility.
-	
+
 2001-04-10  Kevin B. Kenny    <kennykb@acm.org>
 
 	* unix/tclUnixTime.c: Fixed silly typo in calls to 'gmtime' and
@@ -3304,125 +3205,122 @@
 
 2001-04-09  Kevin B. Kenny    <kennykb@acm.org>
 
-	* unix/tclLoadShl.c: Added DYNAMIC_PATH to the load flags so that
-	the SHLIB_PATH will be searched for other libraries.  [Bug #219140]
-	
+	* unix/tclLoadShl.c: Added DYNAMIC_PATH to the load flags so that the
+	SHLIB_PATH will be searched for other libraries. [Bug 219140]
+
 2001-04-09  Kevin B. Kenny    <kennykb@acm.org>
 
-	* unix/tcl.m4: Added _REENTRANT to Solaris build so that thread
-	safe library routines are included.
+	* unix/tcl.m4: Added _REENTRANT to Solaris build so that thread safe
+	library routines are included.
 	* unix/configure: Re-ran 'autoconf' with changed tcl.m4
 	* tclUnixTime.c: Modified for thread safety of 'gmtime' and
-	'localtime' system calls [Bugs #219136 and #232558]
-	
+	'localtime' system calls. [Bugs 219136 and 232558]
+
 2001-04-09  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tests/expr.test (expr-21.*): Tests to check below fix.
 	* generic/tclParseExpr.c (GetLexeme): Now recognises the
 	non-numeric boolean literals for what they are. It no longer makes
 	sense for anyone to create functions with the same name as one of
-	them, but this was true in 7.* as well [Bug #217777; finally!]
+	them, but this was true in 7.* as well [Bug 217777; finally!]
 
 2001-04-07  Miguel Sofer <msofer@users.sourceforge.net>
 
-	* generic/tclExecute.c: Avoid panic when there are extra items in
-	  the tcl stack [Bug #406709, Patch #414470]
+	* generic/tclExecute.c: Avoid panic when there are extra items in the
+	tcl stack. [Bug 406709, Patch 414470]
 	* tests/foreach.test: test to exercise the patch
 
 2001-04-07  Miguel Sofer <msofer@users.sourceforge.net>
 
 	* doc/namespace.n: document correct functionality
 	* generic/tclNamesp.c: corrected behaviour of [namespace code]
-	(Bug #219385, Patch #403530)
+	[Bug 219385, Patch 403530]
 	* library/init.tcl:
 	* tests/namespace-old.test: test correct functionality
 	* tests/namespace.test: test correct functionality
 
 2001-04-07  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* unix/Makefile.in (checkdoc): New target, checking the
-	  definitions as found in the compiled library against the
-	  manpages to find undocumented public functionality.
+	* unix/Makefile.in (checkdoc): New target, checking the definitions as
+	found in the compiled library against the manpages to find
+	undocumented public functionality.
 
 	* unix/mkLinks: Updated to include the new manpage.
 
 	* doc/UniCharIsAlpha.3: New manpage documenting the Unicode
-	  character classification APIs [Bug #218720].
+	character classification APIs. [Bug 218720]
 
 2001-04-07  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* unix/mkLinks: Updated to incorporate the changes below.
 
 	* doc/StringObj.3: Added 'Tcl_AttemptSetObjLength' to the NAME
-	  section. [Bug #414435].
+	section. [Bug 414435]
 
-	* doc/Alloc.3: Added both 'Tcl_AttemptAlloc' and
-	  'Tcl_AttemptRealloc' to the NAME section. [Bug #414435].
+	* doc/Alloc.3: Added both 'Tcl_AttemptAlloc' and 'Tcl_AttemptRealloc'
+	to the NAME section. [Bug 414435]
 
 	* doc/Utf.3: Added both 'Tcl_UniCharCaseMatch' and
-	  'Tcl_UniCharNcasecmp' to the NAME section. [Bug #414435].
+	'Tcl_UniCharNcasecmp' to the NAME section. [Bug 414435]
 
 2001-04-06  Don Porter  <dgp@users.sourceforge.net>
 
 	* library/init.tcl:
-	* tests/init.test:  Modified processing of $::errorInfo by
-	[unknown] when the auto-loaded command throws an error to better
-	cover the tracks of auto-loading.  [Bug 219280, Patch 403551]
+	* tests/init.test:  Modified processing of $::errorInfo by [unknown]
+	when the auto-loaded command throws an error to better cover the
+	tracks of auto-loading. [Bug 219280, Patch 403551]
 
 2001-04-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* doc/read.n: Added section on "USE WITH SERIAL PORTS" to resolve
-	[Bug #219402]
+	[Bug 219402]
 
 	* tests/string.test (string-2.30): Test for this case
 	* generic/tclCmdMZ.c (Tcl_StringObjCmd, STR_COMPARE branch): Fixed
 	problem caused by Utf-rep of \x00 being more than Utf-rep of \x01
-	fooling memcmp by forcing everything through Utf-based
-	comparisons.  Added optimizations for case where objects have a
-	string/unicode-rep or a bytearray-rep (i.e. where we can perform
-	comparisons on fixed-size units.) [Bug #219201]
+	fooling memcmp by forcing everything through Utf-based comparisons.
+	Added optimizations for case where objects have a string/unicode-rep
+	or a bytearray-rep (i.e. where we can perform comparisons on
+	fixed-size units). [Bug 219201]
 	* generic/tclUtf.c (Tcl_UtfNcmp): Corrected seriously erroneous
 	comment.
 
 2001-04-05  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
-	* doc/Macintosh.3: Removed duplicates from .SH line
-	  [Bug #413983]. 
+	* doc/Macintosh.3: Removed duplicates from .SH line. [Bug 413983]
 
 2001-04-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Fixed so will compile
-	with K&R compilers [Patch #413844, Bug #413847]
+	with K&R compilers. [Patch 413844, Bug 413847]
 
 2001-04-04  Don Porter  <dgp@users.sourceforge.net>
 
 	* generic/tclMain.c:  Patch from Kevin Kenny to restore support of
-	  pre-ANSI compilers.  [Bug 413846, Patch 413842]
+	pre-ANSI compilers. [Bug 413846, Patch 413842]
 
 2001-04-04  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* unix/mkLinks: Updated to contain the new manpage.
 
-	* doc/Environment.3: New manpage, describes Tcl_PutEnv
-	  [Bug #219171]. 
+	* doc/Environment.3: New manpage, describes Tcl_PutEnv. [Bug 219171]
 
-	* doc/Macintosh.3: New manpage describing the macintosh specific
-	  parts of the public API [Bug #219169].
+	* doc/Macintosh.3: New manpage describing the macintosh specific parts
+	of the public API. [Bug 219169]
 
 2001-04-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* unix/configure:
 	* unix/tcl.m4: extended test of termios vs. termio vs. sgtty to
 	better detect result on Linux and when certain configure
-	redirections are being used. (max) [Patch #402923; Bug #227412,
-	#219194]
+	redirections are being used. [Patch 402923; Bug 227412, 219194] (max)
 
 2001-04-04  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* generic/tclTest.c:
 	* tests/io.tests: TIP #10 followup correcting a problem with the
-	  original patch because of the lack of 'testthread id' for a
-	  non-threaded compilation.
+	original patch because of the lack of 'testthread id' for a
+	non-threaded compilation.
 
 2001-04-04  Kevin Kenny <kennykb@acm.org>
 
@@ -3440,24 +3338,24 @@
 	* generic/tclObj.c:
 	* generic/tclPkg.c:
 	* generic/tclStringObj.c:
-	* generic/tclStubLib.c:
-	  (TIP#27) Changed a number of Tcl API's to accept "CONST char*"
-	  in place of simple "char*". (kennykb) [Patch #404026]
+	* generic/tclStubLib.c: (TIP#27) Changed a number of Tcl API's to
+	accept "CONST char*" in place of simple "char*". (kennykb) [Patch
+	404026]
 
 2001-04-04  Jeff Hobbs  <jeffh@ActiveState.com>
 
 	* generic/tclListObj.c (Tcl_SetListObj): set objPtr->length = 0 in
 	empty object case to maintain sanctity of Tcl_Obj bytes/length
-	pairing. (porter) [Patch #405998]
+	pairing. [Patch 405998] (porter)
 
 2001-04-03  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* unix/mkLinks: Added 'Signal.3', 'Tcl_WaitPid'.
 
-	* doc/DetachPids.3: Added description of 'Tcl_WaitPid' [Bug #219173].
+	* doc/DetachPids.3: Added description of 'Tcl_WaitPid' [Bug 219173].
 
 	* doc/Signal.3: New man page describing the public API procedures
-	  'Tcl_SignalId' and 'Tcl_SignalMsg' [Bug #219172].
+	'Tcl_SignalId' and 'Tcl_SignalMsg'. [Bug 219172]
 
 2001-04-02  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -3466,7 +3364,7 @@
 	* win/README.binary: further notes corrections.
 
 	* win/configure:
-	* win/tcl.m4 (SHLIB_LD):  added -incremental:no. [Bug #219381]
+	* win/tcl.m4 (SHLIB_LD):  added -incremental:no. [Bug 219381]
 
 2001-04-01  Jeff Hobbs  <jeffh@ActiveState.com>
 
@@ -3474,8 +3372,8 @@
 	* mac/README:
 	* win/README:
 	* win/README.binary:
-	* unix/README: updated patchlevel information to 8.4a3 and
-	updated links and notes.
+	* unix/README: updated patchlevel information to 8.4a3 and updated
+	links and notes.
 
 	* generic/tcl.h:
 	* tools/tcl.wse.in:
@@ -3489,18 +3387,17 @@
 
 	* generic/tclCkalloc.c (TclFinalizeMemorySubsystem): set curTagPtr
 	to NULL to allow for reuse.
-	* generic/tclEvent.c (Tcl_Finalize): moved the tsdPtr
-	initialization inside the subsystemsInitialized check to prevent
-	it potentially getting called twice during finalization.  (wu)
-	[Patch #403532, Bug #219391]
+	* generic/tclEvent.c (Tcl_Finalize): moved the tsdPtr initialization
+	inside the subsystemsInitialized check to prevent it potentially
+	getting called twice during finalization.
+	[Patch 403532, Bug 219391] (wu)
 
 	* generic/tclThreadTest.c (Tcl_ThreadObjCmd): cast fixes
-	* generic/tclTest.c (TestChannelCmd): added cast to mollify
-	Windows debug build.
+	* generic/tclTest.c (TestChannelCmd): added cast to mollify Windows
+	debug build.
 
 	* win/tclWinSock.c (SocketEventProc): Fixed race condition in
-	readability of socket on Windows.
-	[Patch #410674, Bug #219205 #219333]
+	readability of socket on Windows. [Patch 410674, Bug 219205, 219333]
 
 	* win/tcl.m4: added imm32.lib to LIBS_GUI for Tk IME support.
 
@@ -3512,38 +3409,36 @@
 2001-03-30  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
 
 	* All of the changes below belong to TIP #10 [Tcl I/O Enhancement:
-	  Thread-Aware Channels]. See also [Patch #403358] at SF.
+	Thread-Aware Channels]. See also [Patch 403358] at SF.
 
 	* generic/tclIO.h (struct ChannelState, line 236f): Extended the
-	  structure with a new field of type 'Tcl_ThreadId' to hold the id
-	  of the thread currently managing all channels with this state.
+	structure with a new field of type 'Tcl_ThreadId' to hold the id of
+	the thread currently managing all channels with this state.
 
-	  Note: This structure is shared by all channels in a stack of
-	  transformations.
+	Note: This structure is shared by all channels in a stack of
+	transformations.
 
-	* generic/tclIO.c (Tcl_CreateChannel, lines 1058-1065): Modified
-	  to store the Id of the current thread in the 'ChannelState' of
-	  the new channel.
+	* generic/tclIO.c (Tcl_CreateChannel, lines 1058-1065): Modified to
+	store the Id of the current thread in the 'ChannelState' of the new
+	channel.
 
-	* generic/tclIO.c (Tcl_SpliceChannel, lines 2265-2270): Modified
-	  in the same manner as 'Tcl_CreateChannel' as the channel will be
-	  managed by the current thread afterward.
+	* generic/tclIO.c (Tcl_SpliceChannel, lines 2265-2270): Modified in
+	the same manner as 'Tcl_CreateChannel' as the channel will be managed
+	by the current thread afterward.
 
 	* generic/tclIO.c   (Tcl_GetChannelThread, lines 1478-1503):
-	* generic/tcl.decls (Tcl_GetChannelThread, lines 1504-1506): New
-	  API function to retrieve the Id of the managing thread from a
-	  channel. Implementation and declaration.
+	* generic/tcl.decls (Tcl_GetChannelThread, lines 1504-1506): New API
+	function to retrieve the Id of the managing thread from a channel.
+	Implementation and declaration.
 
 	* generic/tclTest.c (TestChannelCmd, lines 4520-4532): Added
-	  subcommand 'mthread' to query a channel about its managing
-	  thread.
+	subcommand 'mthread' to query a channel about its managing thread.
 
 2001-03-29  Mo DeJong  <mdejong@redhat.com>
 
-	* tests/interp.test: Print out warning when
-	testinterpdelete command is not defined.
-	Add tests that checks to make sure a
-	child interp inherits the parent's cwd.
+	* tests/interp.test: Print out warning when testinterpdelete command
+	is not defined. Add tests that checks to make sure a child interp
+	inherits the parent's cwd.
 
 2001-03-29  Jeff Hobbs  <jeffh@gimlet.activestate.com>
 
@@ -3553,35 +3448,34 @@
 
 	* unix/tclUnixPipe.c (TclpCreateTempFile): prevent potential race
 	condition and security leak in tmp filename creation.
-	(max) [Patch #402924]
+	[Patch 402924] (max)
 
 	* unix/configure:
 	* unix/tcl.m4: corrected IRIX-5.x config to not use -n32.
-	(english) [Patch #403626]
+	[Patch 403626] (english)
 
-	* unix/tclUnixThrd.c (Tcl_ConditionWait): fixed handling of
-	timeout for threads (corrects excessive CPU usage issue for Tk on
-	Unix in threaded Tcl environment). (ruppert) [Bug #411603]
+	* unix/tclUnixThrd.c (Tcl_ConditionWait): fixed handling of timeout
+	for threads (corrects excessive CPU usage issue for Tk on Unix in
+	threaded Tcl environment). [Bug 411603] (ruppert)
 
 2001-03-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* doc/lsort.n: Added some notes that clarify the behaviour of
-	[lsort] as well as a whole bunch of examples.  [Bug #219202]
+	[lsort] as well as a whole bunch of examples.  [Bug 219202]
 
 2001-03-27  Jeff Hobbs  <jeffh@gimlet.activestate.com>
 
-	* doc/Alloc.3: corrected docs to note that Tcl_Attempt* return
-	char *'s, not ints. [Bug #411388]
+	* doc/Alloc.3: corrected docs to note that Tcl_Attempt* return char
+	*'s, not ints. [Bug 411388]
 
 	* tests/regexp.test (regexp-19.1):
-	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): fixed handling of nulls
-	in subspec value.
+	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): fixed handling of nulls in
+	subspec value.
 
 2001-03-26  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclDecls.h (Tcl_InitCustomHashTable):  Correction to
-	patch from 2001-01-18;  tclDecls.h was not generated using
-	'make genstubs'.
+	* generic/tclDecls.h (Tcl_InitCustomHashTable):  Correction to patch
+	from 2001-01-18;  tclDecls.h was not generated using 'make genstubs'.
 
 2001-03-26  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
@@ -3590,11 +3484,11 @@
 
 2001-03-23  Jeff Hobbs  <jeffh@activestate.com>
 
-	* generic/tclVar.c (Tcl_ArrayObjCmd): Corrected retrieval of
-	resultPtr to prevent possible corruption.
+	* generic/tclVar.c (Tcl_ArrayObjCmd): Corrected retrieval of resultPtr
+	to prevent possible corruption.
 
 	* generic/tclNamesp.c (Tcl_Import): Correctly freed a DString.
-	(lavana) [Patch #403755]
+	[Patch 403755] (lavana)
 
 2001-03-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
@@ -3603,134 +3497,131 @@
 
 2001-03-14  Don Porter  <dgp@users.sourceforge.net>
 
-	* library/package.tcl (pkg_mkIndex):  Added patch from Vince
-	Darley to make [pkg_mkIndex -verbose] even more verbose.
-	[Bug 219349, Patch 403529]
+	* library/package.tcl (pkg_mkIndex):  Added patch from Vince Darley to
+	make [pkg_mkIndex -verbose] even more verbose. [Bug 219349, Patch
+	403529]
 
 2001-03-13  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* doc/info.n: Improved documentation for [info hostname].
-	[Bug #403840]
+	* doc/info.n: Improved documentation for [info hostname]. [Bug 403840]
 
 	* generic/tclVar.c (Tcl_UnsetObjCmd): Made command behave as
-	documented [issue remaining from bug #405769]
+	documented [issue remaining from Bug 405769]
 
-	* generic/tclCmdMZ.c (Tcl_StringObjCmd): A missing
-	{return TCL_OK;} was causing memory corruption.  [Bug #408002]
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): A missing {return TCL_OK;}
+	was causing memory corruption. [Bug 408002]
 
 	* generic/tclExecute.c (TclDeleteExecEnv, GrowEvaluationStack,
-	TclExecuteByteCode): Added some casts to ClientData that are
+	(TclExecuteByteCode): Added some casts to ClientData that are
 	apparently needed on some architectures.
 
 2001-03-12  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* tests/string.test: Fixed some test numberings and added a test.
-	[Patch #403229]
+	[Patch 403229]
 
 2001-03-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclVar.c (Tcl_UnsetObjCmd): Rewrote argument parser to
-	avoid a read off the end of the argument array that could occur
-	when executing something like [unset -nocomplain] was executed.
-	Improved the error message given when too few arguments are given
-	(-nocomplain should obviously be *before* --, not after it) and
-	also modified the test suite to take account of that and the
-	documentation to use the same improvement. [Bug 405769]
+	* generic/tclVar.c (Tcl_UnsetObjCmd): Rewrote argument parser to avoid
+	a read off the end of the argument array that could occur when
+	executing something like [unset -nocomplain] was executed. Improved
+	the error message given when too few arguments are given (-nocomplain
+	should obviously be *before* --, not after it) and also modified the
+	test suite to take account of that and the documentation to use the
+	same improvement. [Bug 405769]
 
 2001-03-02  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* generic/tclExecute.c (TclExecuteByteCode): Fixed bug that could
-	pass pointers to freed memory to command implementations, which
-	most obviously caused some weird behaviour with [info level], but
-	could have caused problems with user code and command traces too.
-	[Bug 404865, Patch 405436]
+	* generic/tclExecute.c (TclExecuteByteCode): Fixed bug that could pass
+	pointers to freed memory to command implementations, which most
+	obviously caused some weird behaviour with [info level], but could
+	have caused problems with user code and command traces too. [Bug
+	404865, Patch 405436]
 
 2001-02-23  msofer  <msofer@users.sourceforge.net>
+
 	* no changes; fixing up the missing comment in the previous one.
 	Sorry.
 
 2001-02-23  msofer  <msofer@ant.utdt>
 
-	* /cvsroot/tcl/tcl/tests/execute.test:
-	added test for evaluation of an expression in a variable; evals once
-	by compiling, second time using the previous compilation
+	* /cvsroot/tcl/tcl/tests/execute.test: added test for evaluation of an
+	expression in a variable; evals once by compiling, second time using
+	the previous compilation
 
 2001-02-18  Kevin B. Kenny  <kennykb@acm.org>
 
 	* doc/clock.n: Updated documentation to reflect the addition of
-	compat/strftime.c, including the correct formatting of
-	ISO-8601:1988 fiscal week number (%V).
-	
+	compat/strftime.c, including the correct formatting of ISO-8601:1988
+	fiscal week number (%V).
+
 2001-02-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
 	* generic/tclCmdMZ.c (Tcl_SplitObjCmd): Improved efficiency of
-	splitting strings into individual characters by adding hash so
-	that only one Tcl_Obj per character is created.  Improves
-	performance of splitting of short strings and makes a huge
-	difference to splitting of long strings, such as is done in the
-	mime package in tcllib.  [Bug #131523]
+	splitting strings into individual characters by adding hash so that
+	only one Tcl_Obj per character is created. Improves performance of
+	splitting of short strings and makes a huge difference to splitting of
+	long strings, such as is done in the mime package in tcllib. [Bug
+	131523]
 
 2001-01-31  Don Porter  <dgp@users.sourceforge.net>
 
-	* win/makefile.vc (install-libraries):  Corrected misdirected
-	install directory for the msgcat 1.2 package.
+	* win/makefile.vc (install-libraries):  Corrected misdirected install
+	directory for the msgcat 1.2 package.
 
 2001-01-30  Don Porter  <dgp@users.sourceforge.net>
 
-	* generic/tclIO.c (CopyData): Moved code that updates the count
-	of how many bytes are left to copy.  Corrects bug that when
-	writing occurs in the background, the copy loop could be
-	escaped without updating the count, causing CopyData() to try
-	to copy more bytes than the toRead value originally passed to
-	TclCopyChannel(), leading to hangs and misreporting of number
-	of bytes copied. [Bug 118203, Patch 103432]
+	* generic/tclIO.c (CopyData): Moved code that updates the count of how
+	many bytes are left to copy. Corrects bug that when writing occurs in
+	the background, the copy loop could be escaped without updating the
+	count, causing CopyData() to try to copy more bytes than the toRead
+	value originally passed to TclCopyChannel(), leading to hangs and
+	misreporting of number of bytes copied. [Bug 118203, Patch 103432]
 
 2001-01-18  Andreas Kupries  <a.kupries@westend.com>
 
-	* Everything below belongs together, it fixes bug #123153.
+	Everything below belongs together, it fixes [Bug 123153]
 
-	* generic/tcl.h (line 342): A bit more explanation about the
-	  default value for TCL_PRESERVE_BINARY_COMPATABILITY.
+	* generic/tcl.h (line 342): A bit more explanation about the default
+	value for TCL_PRESERVE_BINARY_COMPATABILITY.
 
-	* generic/tcl.h (line 1208): Define the macro 'Tcl_InitHashTable'
-	  only when TCL_PRESERVE_BINARY_COMPATIBILITY is not set
-	  as it kills binary compatibility to 8.3 and earlier
-	  versions. This is the main part of the patch/change.
+	* generic/tcl.h (line 1208): Define the macro 'Tcl_InitHashTable' only
+	when TCL_PRESERVE_BINARY_COMPATIBILITY is not set as it kills binary
+	compatibility to 8.3 and earlier versions. This is the main part of
+	the patch/change.
 
 	* generic/tcl.decls (line 1469):
 	* generic/tclHash.c (Tcl_InitHashTable):
 	* generic/tclHash.c (Tcl_InitHashTableEx):
 	* generic/tclObj.c (Tcl_InitObjHashTable): Changed
-	  'Tcl_InitHashTableEx' to 'Tcl_InitCustomHashTable'. This change
-	  is more of an estethical nature, replacing the ubiquitous 'Ex'
-	  suffix with a more meaningful name. The introduced binary
-	  incompatibility is deemed acceptable as it is between alpha
-	  versions.  Updated callers.
+	'Tcl_InitHashTableEx' to 'Tcl_InitCustomHashTable'. This change is
+	more of an estethical nature, replacing the ubiquitous 'Ex' suffix
+	with a more meaningful name. The introduced binary incompatibility is
+	deemed acceptable as it is between alpha versions.  Updated callers.
 
 	* doc/Hash.3:
 	* unix/mkLinks: Changed 'Tcl_InitHashTableEx' to
-	  'Tcl_InitCustomHashTable'.
+	'Tcl_InitCustomHashTable'.
 
 2001-01-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
 
-	* tests/winPipe.test (winpipe-1.20): 
-	* tests/winDde.test (createChildProcess): 
-	* tests/pkgMkIndex.test (pkgtest::createIndex):  Removed
-	assumption that paths contain no spaces which causes problems with
-	both [eval] and [open |...] due to the well-known differences
-	between lists and strings.  Fixes bug #119406
+	* tests/winPipe.test (winpipe-1.20):
+	* tests/winDde.test (createChildProcess):
+	* tests/pkgMkIndex.test (pkgtest::createIndex): Removed assumption
+	that paths contain no spaces which causes problems with both [eval]
+	and [open |...] due to the well-known differences between lists and
+	strings. Fixes [Bug 119406]
 
 2001-01-04  Don Porter  <dgp@users.sourceforge.net>
 
 	* tests/unixInit.test:
 	* unix/tclUnixInit.c (TclpInitLibraryPath):
-	* win/tclWinInit.c (TclpInitLibraryPath):  Several entries in
-	the library path ($tcl_libPath) are determined relative to the
-	absolute path of the executable.  When the executable is
-	installed in or near the root directory of the file system,
-	relative pathnames were being incorrectly generated, and in
-	the worst case, memory access violations were crashing the program.
-	[Bug 119416, Patch 102972]
+	* win/tclWinInit.c (TclpInitLibraryPath):  Several entries in the
+	library path ($tcl_libPath) are determined relative to the absolute
+	path of the executable. When the executable is installed in or near
+	the root directory of the file system, relative pathnames were being
+	incorrectly generated, and in the worst case, memory access violations
+	were crashing the program. [Bug 119416, Patch 102972]
 
 	******************************************************************
 	*** CHANGELOG ENTRIES FOR 2000 IN "ChangeLog.2000"             ***
diff --git a/ChangeLog.2002 b/ChangeLog.2002
new file mode 100644
index 0000000..30b8b17
--- /dev/null
+++ b/ChangeLog.2002
@@ -0,0 +1,4741 @@
+2002-12-18  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/makefile.vc: some uses of xcopy swapped to the @$(CPY) macro.
+	Reported by Joe Mistachkin <joe@mistachkin.com>.
+
+2002-12-17  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclNotify.c (TclFinalizeNotifier, Tcl_SetServiceMode):
+	(Tcl_ThreadAlert): Check that the stub functions are non-NULL before
+	calling them. They could be set to NULL by Tcl_SetNotifier.
+
+2002-12-16  David Gravereaux  <davygrvy@pobox.com>
+
+	* generic/tclPipe.c (TclCleanupChildren):
+	* tests/winPipe.test:
+	* win/tclWinPipe.c (Tcl_WaitPid):
+	* win/tclWinTest.c:  Gave Tcl_WaitPid the ability to return a Win32
+	exception code translated into a posix style SIG*. This allows [close]
+	to report "CHILDKILLED" without the meaning getting lost in a
+	truncated exit code. In TclCleanupChildren(), TclpGetPid() had to get
+	moved to before Tcl_WaitPid() as the the handle is removed from the
+	list taking away the ability to get the process id after the wait is
+	done. This shouldn't effect the unix implimentaion unless waitpid is
+	called with a pid of zero, meaning "any". I don't think it is..
+
+2002-12-13  Don Porter  <dgp@users.sourceforge.net>
+
+	* unix/configure.in:	Updated configure of CVS snapshots to reflect
+	* win/configure.in:	the 8.4.1.1 patchlevel.
+
+	* unix/configure:	autoconf
+	* win/configure		autoconf
+
+2002-12-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclProc.c (ProcessProcResultCode): Fix failure to propagate
+	negative return codes up the call stack. [Bug 647307]
+	* tests/proc.test (proc-6.1): Test for Bug 647307
+
+	* generic/tclParseExpr.c (TclParseInteger):  Return 1 for the string
+	"0x" (recognize leading "0" as an integer). [Bug 648441]
+	* tests/parseExpr.test (parseExpr-19.1): Test for Bug 648441.
+
+2002-12-09  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinThrd.c (TclpMasterUnlock):
+	* generic/tclThread.c (TclFinalizeThreadData): TclpMasterUnlock must
+	exist and be called unconditional of TCL_THREADS. [Bug 651139]
+
+2002-12-08  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinSock.c (SocketThreadExitHandler, InitSockets):  Check
+	that the tsdPtr is valid before dereferencing as we call it from the
+	exit handler, too [Bug 650353]. Another WSAStartup() loaded version
+	comparison byte swap issue fixed. Although 0x0101 byte swapped is
+	still 0x0101, properly claiming which is major/minor is more correct.
+
+2002-12-06  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclStubInit.c: regen
+	* generic/tclIntPlatDecls.h: regen
+	* generic/tclInt.decls: added TclWinResetInterface
+
+	* win/tclWin32Dll.c (TclWinResetInterfaces):
+	* win/tclWinInit.c (TclpSetInitialEncodings, WinEncodingsCleanup):
+	add exit handler that resets the encoding information to a state where
+	we can reuse Tcl. Following these changes, it is possible to reuse Tcl
+	(following Tcl_FindExecutable or Tcl_CreateInterp) following a
+	Tcl_Finalize.
+
+	* generic/tclIOUtil.c (TclFinalizeFilesystem): reset statics to their
+	original values on finalize to allow reuse of the library.
+
+2002-12-04  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c: reverted back to -r1.27 due to numerous test
+	failures that need to be resolved first. The idea was good, but the
+	details aren't.
+
+2002-12-04  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c (Tcl_WaitPid):  When a process exits with an
+	exception, pass this notice on to the caller with a SIG* code rather
+	than truncating the exit code and missing the meaning. This allows
+	TclCleanupChildren() to report "CHILDKILLED".
+
+	This has a different behavior than unix in that closing the read pipe
+	to a process sends the SIGPIPE signal which is returned as a SIGPIPE
+	exit status. On windows, we send the process a CTRL_BREAK_EVENT and
+	get back a CONTROL_C_EXIT which is documented to mean a SIGINT which
+	seems wrong as a system, but is the correct exit status.
+
+2002-12-04  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to redirected 'load' in virtual filesystem
+	for some Unix systems.
+
+	* generic/tclEvent.c: the filesystem must be cleaned up before the
+	encoding subsystem because it needs access to encodings. Fixes crash
+	on exit observed in embedded applications.
+
+	* generic/tclTestObj.c: patch omitted from previous change of
+	2002-11-13
+
+2002-12-03  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclStubLib.c (Tcl_InitStubs): prevent the cached check of
+	tclStubsPtr to allow for repeated load/unload of the Tcl dll by
+	hosting apps. [Bug 615304]
+
+2002-12-03  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclAppInit.c (sigHandler): Protect from trying to close a NULL
+	handle.
+
+	* win/tclWinPipe.c (PipeClose2Proc, TclpCreateProcess): Send a real
+	Win32 signal (CTRL_C_EVENT) when the read channel is brought down to
+	alert the child to close on its side. Start the process with
+	CREATE_NEW_PROCESS_GROUP to allow the ability to send these signals.
+	The following test case now brings down the child without the use of
+	an external [kill] command.
+
+	% set p [open "|[info name]" w+]
+	file8d5380
+	% pid $p
+	2876
+	% close $p     <- now doesn't block in Tcl_WaitPid()
+	%
+
+	* win/tclWinPipe.c (PipeClose2Proc): Changed CTRL_C_EVENT to
+	CTRL_BREAK_EVENT as it can't be ignored by the child and proved to
+	work on [open "|netstat 1" w+] where CTRL_C_EVENT didn't.
+
+2002-11-27  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinPort.h: Don't turn off winsock prototypes!  TclX didn't
+	like it. Even though the core doesn't use the prototypes, do offer
+	them.
+
+	* win/tclWinSock.c: Removed shutdown() from the function table as it
+	wasn't referenced anywhere and cleaned-up some casting that that
+	wasn't needed.
+
+	* win/tclWinSock.c: WSAStartup() loaded version comparison error which
+	resulted in 2.0 looking less than 1.1.
+
+	* win/tclWinChan.c (Tcl_MakeFileChannel): return of DuplicateHandle()
+	incorrectly used. [Bug 618852]
+
+2002-11-26  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclEncoding.c (TclFinalizeEncodingSubsystem): properly
+	cleanup all encodings by using Tcl_FirstHashEntry in the while loop.
+
+	* unix/Makefile.in (valgrind): add simple valgrind target
+
+	* tests/exec.test: unset path var to allow singleproc testing
+
+	* generic/tclInterp.c (AliasCreate): preserve/release interps to
+	prevent possible FMR error in bad alias cases.
+
+2002-11-26  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinPort.h:
+	* win/tclWinSock.c:  This patch does two things:
+
+	1) Cleans-up the winsock typedefs by using the typedefs provided by
+	winsock2.h. This has no effect on how winsock is initialized; just
+	makes the source code easier to read. [Patch 561305 561301]
+
+	2) Revamps how the socket message handler thread is brought up and
+	down to allow for cleaner exits without the use of TerminateThread().
+	TerminateThread is evil. No attempt has been made to resolve [Bug
+	593810] which may need a new channel driver version for adding a
+	registering function within the transfered thread to init the handler
+	thread. IOW, initialization of the TSD structure is getting bypassed
+	through the thread extension's [thread::transfer] command.
+
+2002-11-26  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinConsole.c:
+	* win/tclWinPipe.c:
+	* win/tclWinSerial.c:
+	* win/tclWinSock.c:
+	* win/tclWinThrd.c:
+	* win/tclWinTime.c:  General cleanup of all worker threads used by the
+	channel drivers. Eliminates the normal case where the worker thread is
+	terminated ('cept the winsock one). Instead, use kernel events to
+	signal a clean exit. Only when the worker thread is blocked on an I/O
+	call is the thread terminated. Essentially, this makes all other
+	channel worker threads behave like the PipeReaderThread() function for
+	it's cleaner exit behavior. This appears to fix [Bug 597924] but needs
+	3rd party confirmation to close the issue.
+
+2002-11-26  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/README: Update msys build env URL. This release #4 build both
+	tcl and tk without problems.
+
+2002-11-22  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/init.tcl:         code cleanup to reduce use of
+	* library/opt/optparse.tcl: string compare
+
+	* tests/interp.test: interp-14.4
+	* generic/tclInterp.c (TclPreventAliasLoop): prevent seg fault when
+	creating an alias command over the interp name. [Bug 641195]
+
+2002-11-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclUtil.c (SetEndOffsetFromAny): handle integer offset
+	after the "end-" prefix.
+
+	* generic/get.test:
+	* generic/string.test:
+	* generic/tclObj.c (SetIntFromAny, SetWideIntFromAny):
+	* generic/tclGet.c (TclGetLong, Tcl_GetInt): simplify sign handling
+	before calling strtoul(l). [Bug 634856]
+
+2002-11-18  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/tclWinThrd.c (Tcl_CreateThread/TclpThreadExit): Fixed improper
+	compiler macros that missed the VC++ compiler. This resulted in VC++
+	builds using CreateThread()/ExitThread() in place of the proper
+	_beginthreadex()/_endthreadex(). This was a large error and am
+	surprised I missed seeing it earlier.
+
+2002-11-13  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/regexpComp.test: added tests 22.*
+	* generic/tclCompCmds.c (TclCompileRegexpCmd): add left and right
+	anchoring (^ and $) recognition and check starting or ending .* to
+	extend the number of REs that can be compiled to string match or
+	string equal.
+
+2002-11-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c:
+	* tests/trace.test: applied patch from Hemang Levana to fix [Bug
+	615043] in execution traces with 'return -code error'.
+
+	* generic/tclTestObj.c:
+	* tests/stringObj.test: added 'knownBug' test for [Bug 635200]
+	* generic/tclStringObj.c: corrected typos in comments
+
+	* generic/tclFileName.c:
+	* tests/fileName.test: applied patch for bug reported against tclvfs
+	concerning handling of Windows serial ports like 'com1', 'lpt3' by the
+	virtual filesystem code.
+
+	* doc/RegExp.3: clarification of the 'extendMatch' return values.
+
+2002-11-11  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclUtil.c (Tcl_Backslash): use TclUtfToUniChar.
+	(Tcl_StringCaseMatch): use TclUtfToUniChar and add further
+	optimizations for the one-byte/char case.
+
+	* generic/tclUtf.c: make use of TclUtfToUniChar macro throughout the
+	functions, and add extra optimization to Tcl_NumUtfChars for
+	one-byte/char case.
+
+	* generic/tclVar.c (DisposeTraceResult, CallVarTraces): add proper
+	static declarations.
+
+	* generic/tclStringObj.c (Tcl_GetCharLength): optimize for the ascii
+	char case.
+	(Tcl_GetUniChar): remove unnecessary use of Tcl_UtfToUniChar.
+	(FillUnicodeRep): Use TclUtfToUniChar.
+
+	* generic/tclHash.c (HashStringKey): move string++ lower to save an
+	instruction.
+
+	* generic/tclExecute.c (TclExecuteByteCode): improve INST_STR_CMP to
+	use memcmp in the one-byte/char case, also use direct index for
+	INST_STR_INDEX in that case.
+
+	* generic/tclEncoding.c (UtfToUtfProc, UtfToUnicodeProc):
+	(TableFromUtfProc, EscapeFromUtfProc): Use TclUtfToUniChar.
+	(UnicodeToUtfProc, TableToUtfProc): add 1-byte char optimizations for
+	Tcl_UniCharToUtf call. These improve encoded channel conversion speeds
+	by up to 20%.
+
+	* tests/split.test: added 1-char string split tests
+	* generic/tclCmdMZ.c (Tcl_SplitObjCmd): Use TclUtfToUniChar. Also
+	added a special case for single-ascii-char splits.
+	(Tcl_StringObjCmd): Use TclUtfToUniChar. For STR_RANGE, support
+	getting ranges of ByteArrays (reverts change from 2000-05-26).
+	(TraceExecutionProc) add proper static declaration.
+
+	* generic/tclInt.h: add macro version of Tcl_UtfToUniChar
+	(TclUtfToUniChar) that does the one-byte utf-char check without
+	calling Tcl_UtfToUniChar, for use by the core. This brings notable
+	speedups for primarily ascii string handling.
+
+	* generic/tcl.h (TCL_PATCH_LEVEL): bump to 8.4.1.1 for patchlevel
+	only. This interim number will only be reflected by [info patchlevel].
+
+2002-11-11  Kevin Kenny  <kennykb@acm.org>
+
+	* doc/Tcl.n: Corrected indentation of the new language. Oops.
+
+2002-11-10  Kevin Kenny <kennykb@acm.org>
+
+	* doc/Tcl.n: Added language to the Endekalogue to make it clear that
+	substitutions always take place from left to right. [Bug 635644]
+
+2002-11-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* changes: Note TclInExit TclInThreadExit changes.
+	* generic/tclEvent.c (TclInExit, TclInThreadExit): Split out
+	functionality of TclInExit to make it clear which one should be called
+	in each situation.
+	* generic/tclInt.decls: Declare TclInThreadExit.
+	* generic/tclIntDecls.h: Regen.
+	* generic/tclStubInit.c: Regen.
+	* mac/tclMacChan.c (StdIOClose):
+	* unix/tclUnixChan.c (FileCloseProc):
+	* win/tclWinChan.c (FileCloseProc):
+	* win/tclWinConsole.c (ConsoleCloseProc):
+	* win/tclWinPipe.c (TclpCloseFile):
+	* win/tclWinSerial.c (SerialCloseProc): Invoke the new TclInThreadExit
+	method instead of TclInExit.
+
+2002-11-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Generate a fatal configure error if
+	no ar program can be found on the path. [Bug 582039]
+	* win/configure: Regen.
+	* win/configure.in: Check that AR, RANLIB, and RC are found on the
+	path when building with gcc.
+
+2002-11-03  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclAppInit.c:  Calls Registry_Init() and Dde_Init() when
+	STATIC_BUILD and TCL_USE_STATIC_PACKAGES macros are set.
+
+	* win/makefile.vc:
+	* win/rules.vc:  linkexten option now sets the TCL_USE_STATIC_PACKAGES
+	macro which also adds the registry and dde object files to the link
+	of the shell. [Patch 479697] Also factored some additional macros that
+	will be helpful for extension authors. Version grepping of tcl.h will
+	need to be added to complete this.
+
+	* win/buildall.vc.bat: Added more descriptive commentary.
+
+2002-11-01  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinReg.c:  Changed the Tcl_PkgProvide() line to declare the
+	registry extension at version 1.1 from 1.0.
+
+2002-10-31  Andreas Kupries  <andreask@activestate.com>
+
+	* library/word.tcl: Changed $tcl_platform to $::tcl_platform to avoid
+	possible scope trouble.
+
+2002-10-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWinInt.h:
+	* win/tclWin32Dll.c: added comments about certain NULL function
+	pointers which will be filled in when Tcl_FindExecutable is called, so
+	that users don't report invalid bugs on this topic. (No code changes
+	at all).
+
+2002-10-29  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclLoadDyld.c (TclpFindSymbol): pass all dyld error messages
+	upstream [Bug 627546].
+
+2002-10-28  Andreas Kupries  <andreask@activestate.com>
+
+	* library/dde/pkgIndex.tcl:
+	* library/reg/pkgIndex.tcl: Changed the hardwired debug suffix (d) to
+	the correct suffix (g).
+
+2002-10-28  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/auto.tcl:	Converted the Mac-specific [package unknown]
+	* library/init.tcl:	behavior to use a chaining mechanism to extend
+	* library/package.tcl:	the default [tclPkgUnknown]. [Bug 627660]
+	* library/tclIndex:	[Patch 624509] (steffen)
+
+2002-10-26  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: xcopy on NT 4.0 doesn't support the /Y switch
+	(overwrite). Added logic to handle this. [Bug 618019]
+
+2002-10-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclInt.h: Removed definitions of obsolete HistoryEvent and
+	HistoryRev structures (the history mechanism has been written in Tcl
+	for some time now.)
+
+2002-10-22  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	*** 8.4.1 TAGGED FOR RELEASE ***
+
+	* changes: updated for 8.4.1 release
+
+	* win/Makefile.in: removed @MEM_DEBUG_FLAGS@ subst.
+	* win/configure: regen
+	* win/configure.in: removed SC_ENABLE_MEMDEBUG call
+	* win/tcl.m4: replaced SC_ENABLE_MEMDEBUG with a more intelligent
+	SC_ENABLE_SYMBOLS that takes yes|no|mem|compile|all as options now.
+
+2002-10-22  Daniel Steffen  <das@users.sourceforge.net>
+
+	* library/auto.tcl (tcl_findLibrary):
+	* library/package.tcl (tclPkgUnknown): on macosx, search inside the
+	Resources/Scripts subdirectory of any potential package directory.
+	* macosx/Tcl.pbproj/project.pbxproj: add standard Frameworks dirs to
+	TCL_PACKAGE_PATH make argument.
+	* unix/tclUnixInit.c (TclpSetVariables): on macosx, add embedded
+	framework dirs to tcl_pkgPath: @executable_path/../Frameworks and
+	@executable_path/../PrivateFrameworks (if they exist), as well as the
+	dirs in DYLD_FRAMEWORK_PATH (if set). [Patch 624509]
+	use standard MAXPATHLEN instead of literal 1024
+
+2002-10-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/StringObj.3, doc/Object.3: Documented that Tcl_Obj's standard
+	string form is a modified UTF-8; apparently, this was not mentioned
+	anywhere in the main docs, and lead to [Bug 624919].
+
+2002-10-21  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.pbproj/project.pbxproj: bumped version to 8.4.1
+	* generic/tcl.h: Added reminder comment to edit
+	macosx/Tcl.pbproj/project.pbxproj when version number changes.
+
+2002-10-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/reg/pkgIndex.tcl:
+	* win/configure:
+	* win/configure.in:
+	* win/Makefile.in:
+	* win/makefile.vc:
+	* win/makefile.bc:    Updated to reg1.1
+
+	* doc/registry.n:      Added support for broadcasting changes to the
+	* tests/registry.test: registry Environment. Noted proper code in the
+	* win/tclWinReg.c:     docs. [Patch 625453]
+
+	* unix/Makefile.in (dist): add any mac/tcl*.sea.hqx files
+
+2002-10-17  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclVar.c:	Fixed code that check for proper # of args to
+	* tests/var.test:	[array names]. Added test. [Bug 624755]
+
+2002-10-16  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/configure:                 add workaround for cygwin windres
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): problem. [Patch 624010] (howell)
+
+2002-10-15  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* README: added archives.tcl.tk note
+
+	* unix/configure:
+	* unix/tcl.m4: Correct AIX-5 ppc build flags. Correct HP 11 64-bit gcc
+	building. [Patch 601051] (martin)
+
+2002-10-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c:
+	* tests/trace.test: applied patch from Hemang Levana to fix [Bug
+	615043] in execution traces with idle tasks firing.
+
+2002-10-14  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclEnv.c (Tcl_PutEnv): correct possible mem leak. [Patch
+	623269] (brouwers)
+
+2002-10-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tcl.h: Need a different strategy through the maze of
+	#defines to let people building with Cygwin build correctly. Also made
+	some comments less misleading...
+
+2002-10-10  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* README: fixed minor nits [Bug 607776] (virden)
+
+	* win/configure:
+	* win/tcl.m4: enable USE_THREAD_ALLOC (new threaded allocator) by
+	default in cygwin configure on Windows.
+
+2002-10-10  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/Tcl.n:	Clarified that namespace separators are legal in the
+			variable names during $-subtitution. [Bug 615139]
+
+	* doc/regexp.n:	Typo correction. Thanks Ronnie Brunner. [Bug 606826]
+
+2002-10-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* unix/tclLoadAout.c
+	* unix/tclLoadDl.c
+	* unix/tclLoadDld.c
+	* unix/tclLoadDyld.c
+	* unix/tclLoadNext.c
+	* unix/tclLoadOSF.c
+	* unix/tclLoadShl.c
+	* win/tclWinLoad.c: allow either full paths or simply dll names to be
+	specified when loading files (the latter will be looked up by the OS
+	on your PATH/LD_LIBRARY_PATH as appropriate). Fixes [Bug 611108]
+
+2002-10-09  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/README: doc'ed --enable-symbols options.
+	* unix/Makefile.in: removed @MEM_DEBUG_FLAGS@ subst.
+	* unix/configure: regen
+	* unix/configure.in: removed SC_ENABLE_MEMDEBUG call
+	* unix/tcl.m4: replaced SC_ENABLE_MEMDEBUG with a more intelligent
+	SC_ENABLE_SYMBOLS that takes yes|no|mem|compile|all as options now.
+
+2002-10-09  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/tclWinTime.c: Added code to set an exit handler that terminates
+	the thread that calibrates the performance counter, so that the thread
+	won't outlive unloading the Tcl DLL. [Bug 620735]
+
+2002-10-09  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/binary.n: More clarification of [binary scan]'s behaviour.
+
+2002-10-09  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclIntDecls.h: fixed botched regen.
+
+2002-10-09  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.decls: made TclSetPreInitScript() declaration
+	generic as it is used on mac & aqua as well.
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c: regen.
+	* generic/tclCompile.h: added prototype for TclCompileVariableCmd.
+
+	* mac/tclMacPort.h: removed incorrect <fcntl.h> definitions and
+	obsolete <stat.h> definitions.
+	* mac/tclMacChan.c: removed obsolete GetOpenMode() and replaced
+	associated constants with the <fcntl.h> analogues (they existing defs
+	were inconsistent with <fcntl.h> which was causing havoc when
+	Tcl_GetOpenMode was used instead of private GetOpenMode).
+
+	* mac/tclMacFCmd.c: removed GenerateUniqueName(), use equivalent (and
+	identically named) routine from MoreFiles instead.
+
+	* mac/tclMacLoad.c: CONSTification, fixes to Vince's last changes.
+
+	* mac/tclMacFile.c:
+	* mac/tclMacTest.c:
+	* mac/tclMacUnix.c: CONSTification.
+
+	* mac/tclMacOSA.c: CONSTification, sprintf fixes, UH 3.4.x changes;
+	fix for missing autoname token from TclOSACompileCmd. (bdesgraupes)
+	* mac/AppleScript.html(AppleScript delete): doc fix. (bdesgraupes)
+
+	* mac/tcltkMacBuildSupport.sea.hqx: updated MoreFiles to 1.5.3,
+	updated build instructions for 8.4.
+	* mac/tclMacProjects.sea.hqx: rebuilt archive.
+
+2002-10-09  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/Alloc.3: Added a note to mention that attempting to allocate a
+	zero-length block can return NULL. [Tk Bug 619544]
+
+2002-10-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/binary.n: Doc improvements [Patch 616480]
+
+	* tests/fCmd.test, tests/winFCmd.test:
+	* tools/eolFix.tcl, tools/genStubs.tcl: [file exist] -> [file exists]
+	Thanks to David Welton.
+
+2002-10-03  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n: fixed typo [Bug 618018]. Thanks to "JJM".
+
+2002-10-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tools/man2help2.tcl:
+	* tests/http.test, tests/httpd, tests/httpold.test:
+	* tests/env.test, tests/binary.test, tests/autoMkindex.test:
+	* library/init.tcl, library/http/http.tcl: [info exist] should really
+	be [info exists]. [Bug 602566]
+
+	* doc/lsearch.n: Better specification of what happens when -sorted is
+	mixed with other options. [Bug 617816]
+
+2002-10-01  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclProc.c (TclCreateProc): mask out VAR_UNDEFINED for
+	precompiled locals to support 8.3 precompiled code.
+	(Tcl_ProcObjCmd): correct 2002-09-26 fix to look for tclProcBodyType.
+
+2002-10-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/socket.n: Mentioned that ports may be specified as serivce names
+	as well as integers. [Bug 616843]
+
+2002-09-30  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCompCmds.c (TclCompileRegexpCmd): correct the checking
+	for bad re's that didn't terminate the re string. Resultant compiles
+	were correct, but much slower than necessary.
+
+2002-09-29  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclAppInit.c: Added proper exiting conditions using Win32
+	console signals. This handles the existing lack of a Ctrl+C exit to
+	call exit handlers when built for thread support. Also, properly
+	handles exits from other conditions such as CTRL_CLOSE_EVENT,
+	CTRL_LOGOFF_EVENT, and CTRL_SHUTDOWN_EVENT signals. In all cases,
+	exit handlers will be called. [Bug 219355]
+
+	* win/makefile.vc: Added missing tclThreadAlloc.c to the build rules
+	and defines USE_THREAD_ALLOC when TCL_THREADS is defined to get the
+	new behavior by default.
+
+2002-09-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* README:		Bumped to version 8.4.1 to avoid confusion of
+	* generic/tcl.h:	CVS snapshots with the actual 8.4.0 release.
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/configure.in:
+
+	* unix/configure:	autoconf
+	* win/configure:
+
+2002-09-26  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure: regen.
+	* unix/tcl.m4: improve AIX-4/5 64bit compilation support.
+
+	* generic/tclProc.c (Tcl_ProcObjCmd): correct overeager optimization
+	of noop proc to handle the precompiled case. (sofer)
+
+	* unix/ldAix (nmopts): add -X32_64 to make it work for 32 or 64bit
+	mode compilation.
+
+	* library/encoding/koi8-u.enc: removed extraneous spaces that confused
+	encoding reader. [Bug 615115]
+
+	* unix/Makefile.in: generate source dists with -src designator and do
+	not generate .Z anymore (just .gz and .zip).
+
+2002-09-18  Mumit Khan <khan@nanotech.wisc.edu>
+
+	Added basic Cygwin support.
+
+	* win/tcl.m4 (SC_PATH_TCLCONFIG): Support one-tree build.
+	(SC_PATH_TKCONFIG): Likewise.
+	(SC_PROG_TCLSH): Likewise.
+	(SC_CONFIG_CFLAGS): Assume real Cygwin port and remove -mno-cygwin
+	flags. Add -mwin32 to extra_cflags and extra_ldflags. Remove ``-e
+	_WinMain@16'' from LDFLAGS_WINDOW.
+	* win/configure.in: Allow Cygwin build.
+	(SEH test): Define to be 1 instead of empty value.
+	(EXCEPTION_DISPOSITION): Add test.
+	* win/configure: Regenerate.
+
+	* generic/tcl.h: Don't explicitly define __WIN32__ for Cygwin, let the
+	user decide whether to use Windows or POSIX personality.
+	(TCL_WIDE_INT_TYPE, TCL_LL_MODIFIER, struct Tcl_StatBuf): Define for
+	Cygwin.
+	* generic/tclEnv.c (Tcl_CygwinPutenv): putenv replacement for Cygwin.
+	* generic/tclFileName.c (Tcl_TranslateFileName): Convert POSIX to
+	native format.
+	(TclDoGlob): Likewise.
+	* generic/tclPlatDecls.h (TCHAR): Define for Cygwin.
+	* win/tclWinPort.h (putenv, TclpSysAlloc, TclpSysFree,
+	(TclpSysRealloc): Define for Cygwin.
+
+2002-09-26  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: preserve environment value of INSTALL_ROOT. When
+	embedding only use deployment build. Force relink before embedded
+	build to ensure new linker flags are picked up.
+
+	* macosx/Tcl.pbproj/project.pbxproj: add symbolic links to debug lib,
+	stub libs and tclConfig.sh in framework toplevel. Configure target
+	dependency fix. Fix to 'clean' action. Added private tcl headers to
+	framework. Install tclsh symbolic link. Html doc build works when no
+	installed tclsh available. Made html doc structure in framework more
+	like in Apple frameworks.
+
+2002-09-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/tcl.m4 (SC_TCL_64BIT_FLAGS): Yet more robust 64-bit value
+	detection to close [Bug 613117] on more systems.
+
+	* generic/tclCompile.c (TclPrintSource): More CONSTifying.
+	* generic/tclExecute.c (EvalStatsCmd): Object-ify to reduce warnings.
+	Thanks to 'CoderX2' on the chat for bringing this to my attention...
+
+	* unix/tcl.m4: Forgot to define TCL_WIDE_INT_IS_LONG at the
+	appropriate moment. I believe this is the cause of [Bug 613117]
+
+	* doc/lset.n: Changed 'list' to 'varName' for consistency with lappend
+	documentation. Thanks to Glenn Jackman [Bug 611719]
+
+2002-09-22  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:  Corrected [puts -nonewline] within
+	test bodies. Thanks to Harald Kirsch. [Bug 612786, Patch 612788] Also
+	corrected reporting of body return code. Thanks to David Taback [Bug
+	611922]
+	* library/tcltest/pkgIndex.tcl: Bump to version 2.2.1.
+	* tests/tcltest.test: added tests for these bugs.
+
+2002-09-15  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Add PEEK_XCLOSEIM define under
+	Linux. This is used by Tk to double check that an X input context is
+	cleaned up before it is closed.
+
+2002-09-12  David Gravereaux <davygrvy@pobox.com>
+
+	* win/coffbase.txt: Added BLT to the virtual base address listings
+	table should BLT's build tools decide to use it.
+
+2002-09-12  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tcl.h:
+	* mac/tclMacApplication.r:
+	* mac/tclMacLibrary.r:
+	* mac/tclMacResource.r: unified use of the two equivalent resource
+	compiler header inclusion defines RC_INVOKED and RESOURCE_INCLUDED,
+	now use RC_INVOKED throughout.
+
+2002-09-10  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/README: Add note about building extensions with the same
+	compiler Tcl was built with. [Tk Bug 592096]
+
+2002-09-10  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.pbproj/project.pbxproj: disabled building html
+	documentation during embedded build.
+
+2002-09-10  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/Makefile.in: added DYLIB_INSTALL_DIR variable for macosx and
+	set it to default value ${LIB_RUNTIME_DIR}
+	* unix/tcl.m4 (Darwin): use DYLIB_INSTALL_DIR instead of
+	LIB_RUNTIME_DIR in the -install_name argument to ld.
+	* unix/configure: regen.
+
+	* macosx/Tcl.pbproj/project.pbxproj:
+	* macosx/Makefile: added support for building Tcl as an embedded
+	framework, i.e. using an dyld install_name containing
+	@executable_path/../Frameworks via the new DYLIB_INSTALL_DIR
+	unix/Makefile variable.
+
+2002-09-10  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	*** 8.4.0 TAGGED FOR RELEASE ***
+
+2002-09-06  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/file.n:  Format correction, and clarified [file normalize]
+	returns an absolute path.
+
+	* doc/tcltest.n:  Added examples section, as long promised.
+
+2002-09-06  Reinhard Max  <max@suse.de>
+
+	* tests/tcltest.test: Added nonRoot flag to tests 8.3, 8.4, and 8.12.
+
+2002-09-05  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:  Clarified phrasing.
+
+	* generic/tclBasic.c (TclRenameCommand,CallCommandTraces):
+	* tests/trace.test (trace-27.1): Corrected memory leak when a rename
+	trace deleted the command being traced. Test added. Thanks to Hemang
+	Lavana for the fix. [Bug 604609]
+
+	* generic/tclVar.c (TclDeleteVars):  Corrected logic for setting the
+	TCL_INTERP_DESTROYED flag when calling variable traces. [Tk Bug 605121]
+
+2002-09-04  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c (DeleteArray): leak plug [Bug 604239]. Thanks to
+	dkf and dgp for the long and difficult discussion in the chat.
+
+2002-09-03  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclVar.c (Tcl_UpVar2): code cleanup to not use goto
+
+	* unix/configure: remove -pthread from LIBS on FreeBSD in thread
+	* unix/tcl.m4:    enabled build. [Bug 602849]
+
+2002-09-03  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclInterp.c (AliasCreate): a Tcl_Obj was leaked on error
+	return from TclPreventAliasLoop.
+
+2002-09-03  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.pbproj/project.pbxproj: Bumped version number to 8.4.0
+	and updated copyright info.
+
+2002-09-03  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c (Tcl_UpVar2): a Tcl_Obj was being leaked on error
+	return from TclGetFrame.
+
+2002-09-03  Don Porter  <dgp@users.sourceforge.net>
+
+	* changes:  Updated changes for 8.4.0 release.
+
+2002-09-02  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixFile.c (TclpObjLink): removed unnecessary/unfreed extra
+	native char*.
+
+	* unix/tclUnixChan.c (Tcl_MakeTcpClientChannel): make sure to init
+	flags field of TcpState ptr to 0.
+
+	* unix/configure:
+	* unix/tcl.m4: added 64-bit gcc compilation support on HP-11.
+	[Patch 601051] (martin)
+
+	* README:		Bumped version number to 8.4.0
+	* generic/tcl.h:
+	* tools/tcl.wse.in:
+	* unix/configure:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/configure:
+	* win/configure.in:
+
+	* generic/tclInterp.c (SlaveCreate): make sure that the memory and
+	checkmem commands are initialized in non-safe slave interpreters when
+	TCL_MEM_DEBUG is used. [Bug 583445]
+
+	* win/tclWinConsole.c (ConsoleCloseProc): only wait on writable pipe
+	if there was something to write. This may prevent infinite wait on
+	exit.
+
+	* tests/exec.test: marked exec-18.1 unixOnly until the Windows
+	incompatability (in the test, not the core) can be resolved.
+
+	* tests/http.test (http-3.11): added close $fp that was causing an
+	error on Windows because the file was not closed before deleting.
+
+	* unix/tclUnixInit.c (Tcl_MacOSXGetLibraryPath): made this static
+	function only appear when HAVE_CFBUNDLE is defined.
+
+2002-08-31  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tcl.m4: added TK_SHLIB_LD_EXTRAS analogue of existing
+	TCL_SHLIB_LD_EXTRAS for linker settings only used when linking Tk.
+
+	* unix/configure: regen
+
+2002-08-31  Daniel Steffen  <das@users.sourceforge.net>
+
+	*** macosx-8-4-branch merged into the mainline [Patch 602770] ***
+
+	* generic/tcl.decls: added new macosx specific entry to stubs table.
+
+	* tools/genStubs.tcl: added generation of platform guards for
+	macosx. This is a little more complex than it seems, because MacOS X
+	IS "unix" plus a little bit, for the purposes of Tcl. BUT
+	unfortunately, Tk uses "unix" to mean X11. So added platform keys for
+	macosx (the little added to "unix"), "aqua" and "x11" to distinguish
+	these for Tk.
+
+	* generic/tcl.h: added a #ifnded RESOURCE_INCLUDED so that tcl.h can
+	be passed to the resource compiler.
+
+	* generic/tcl.h:
+	* generic/tclNotify.c: added a few Notifier procs, to be able to
+	modify more bits of the Tcl notifier dynamically. Required to get Mac
+	OS X Tk to live on top of the Tcl Unix threaded notifier. Changes the
+	size of the Tcl_NotifierProcs structure, but doesn't move any elements
+	around.
+
+	* unix/tclUnixNotfy.c: moved the call to Tcl_ConditionNotify till
+	AFTER we are done mucking with the pointer swap. Fixes cases where the
+	thread waiting on the condition wakes & accesses the waitingListPtr
+	before it gets reset, causing a hang.
+
+	* library/auto.tcl (tcl_findLibrary): added checking the directories
+	in the tcl_pkgPath for library files on macosx to enable support of
+	the standard Mac OSX library locations.
+
+	* unix/Makefile.in:
+	* unix/configure.in:
+	* unix/tcl.m4: added MAC_OSX_DIR. Added PLAT_OBJS to the OBJS: there
+	are some MacOS X specific files now for Tcl, and when I get the
+	resource & applescript stuff ported over, and restore support for
+	FindFiles, etc, there will be a few more. Added LD_LIBRARY_PATH_VAR
+	configure variable to avoid having to set all possible LD_LIBRARY_PATH
+	analogues on all platforms. LD_LIBRARY_PATH_VAR is "LD_LIBRARY_PATH"
+	by default, "LIBPATH" on AIX, "SHLIB_PATH" on HPUX and
+	"DYLD_LIBRARY_PATH" on Mac OSX. Added configure option to package Tcl
+	as a framework on Mac OSX.
+
+	* macosx/tclMacOSXBundle.c (new): support for finding Tcl extension
+	packaged as 'bundles' in the standard Mac OSX library locations.
+
+	* unix/tclUnixInit.c: added support for findig the tcl script library
+	inside Tcl packaged as a framework on Mac OSX.
+
+	* macosx/Tcl.pbproj/jingham.pbxuser (new):
+	* macosx/Tcl.pbproj/project.pbxproj (new): project for Apple's
+	ProjectBuilder IDE.
+
+	* macosx/Makefile (new): simple makefile for building the project from
+	the command line via the ProjectBuilder tool 'pbxbuild'.
+
+	* unix/configure:
+	* generic/tclStubInit.c:
+	* generic/tclPlatDecls.h: regen
+
+2002-08-29  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* win/tclWinThrd.c (TclpFinalizeThreadData, TclWinFreeAllocCache):
+	Applied patch for [Bug 599428], provided by Miguel Sofer
+	<msofer@users.sourceforge.net>.
+
+2002-08-28  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclEnv.c:
+	* unix/configure.in:
+	* win/tclWinPort.h:  putenv() on some systems copies the buffer rather
+	than taking reference to it. This causes memory leaks and is know to
+	effect mswindows (msvcrt) and NetBSD 1.5.2 . This patch tests for this
+	behavior and turns on -DHAVE_PUTENV_THAT_COPIES=1 when approriate.
+	Thanks to David Welton for assistance. [Bug 414910]
+
+	* unix/configure: regen'd
+
+2002-08-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/eval.n: Added mention of list command and corrected "SEE ALSO".
+
+	* unix/configure.in: Cache handling of ac_cv_type_socklen_t was wrong.
+	[Bug 600931] reported by John Ellson. Fixed by putting the brackets
+	where they belong.
+
+2002-08-26  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompCmds.c: fix for [Bug 599788] (error in element name
+	causing segfault), reported by Tom Wilkason. Fixed by copying the
+	tokens instead of the source string.
+
+2002-08-26  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclThreadAlloc.c: small optimisation, reducing the new
+	allocator's overhead.
+
+2002-08-23  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclObj.c (USE_THREAD_ALLOC): fixed leak [Bug 597936]. Thanks
+	to Zoran Vasiljevic.
+
+2002-08-23  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclThreadAlloc.c (USE_THREAD_ALLOC): moving objects between
+	caches as a block, instead of one-by-one.
+
+2002-08-22  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c:
+	* generic/tclCmdMZ.c: fix for freed memory r/w in delete traces [Bug
+	589863], patch by Hemang Lavana.
+
+2002-08-20  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* win/Makefile.in (CFLAGS):
+	* unix/Makefile.in (MEM_DEBUG_FLAGS): Added usage of @MEM_DEBUG_FLAGS@.
+	* win/configure.in:
+	* unix/configure.in: Added usage of SC_ENABLE_MEMDEBUG.
+	* win/tcl.m4:
+	* unix/tcl.m4: Added macro SC_ENABLE_MEMDEBUG. Allows a user of
+	configure to (de)activate memory validation and debugging
+	(TCL_MEM_DEBUG). No need to modify the makefile anymore.
+
+2002-08-20  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCkalloc.c:	CONSTified MemoryCmd and CheckmemCmd.
+
+	* README:		Bumped version number to 8.4b3 to distinguish
+	* generic/tcl.h:	HEAD from the 8.4b2 release.
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/configure.in:
+
+	* unix/configure:	autoconf
+	* win/configure:
+
+	* library/http/http.tcl:	Corrected installation directory of
+	* library/msgcat/msgcat.tcl:	the package tcltest 2.2. Added
+	* library/opt/optparse.tcl:	comments in other packages to remind
+	* library/tcltest/tcltest.tcl:	that installation directories need
+	* unix/Makefile.in:		updates to match increasing version
+	* win/Makefile.in:		numbers. [Bug 597450]
+	* win/makefile.bc:
+	* win/makefile.vc:
+
+2002-08-19  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* unix/tclUnixTest.c (TestfilehandlerCmd): Changed readable/writable
+	to the more common readable|writable. Fixes [Bug 596034] reported by
+	Larry Virden <lvirden@users.sourceforge.net>.
+
+2002-08-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/fCmd.test: Added test to make sure that the cause of the
+	problem is detectable with an unpatched Tcl.
+	* doc/ObjectType.3: Added note on the root cause of this problem to
+	the documentation, since it is possible for user code to trigger this
+	sort of behaviour too.
+	* generic/tclIOUtil.c (SetFsPathFromAny): Objects should only have
+	their old representation deleted when we know that we are about to
+	install a new one. This stops a weird TclX bug under Linux with
+	certain kinds of memory debugging enabled which essentally came down
+	to a double-free of a string.
+
+2002-08-14  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclInt.h:
+	* generic/tclObj.c: (code cleanup) factored the parts in the macros
+	TclNewObj() / TclDecrRefCount() into a common part for all
+	memory allocators and two new macros TclAllocObjStorage() /
+	TclFreeObjStorage() that are specific to each allocator and fully
+	describe the differences. Removed allocator-specific code from
+	tclObj.c by using the macros.
+
+2002-08-12  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c: fixing UMR in delete traces, [Bug 589863].
+
+2002-08-08  David Gravereaux <davygrvy@pobox.com>
+
+	* tools/man2help.tcl: Fixed $argv handling bug where if -bitmap wasn't
+	specified $argc was off by one.
+
+2002-08-08  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* tests/uplevel.test: added 6.1 to test [uplevel] with shadowed
+	commands [Bug 524383]
+
+	* tests/subst.test: added 5.8-10 as further tests for [Bug 495207]
+
+2002-08-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/README: Noted removal of defs.tcl.
+
+2002-08-08  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* doc/lsearch.n: corrected lsearch docs to use -inline in examples.
+
+	*** 8.4b2 TAGGED FOR RELEASE ***
+
+	* tests/fCmd.test:
+	* tests/unixFCmd.test: updated tests for new link copy behavior.
+	* generic/tclFCmd.c (CopyRenameOneFile): changed the behavior to
+	follow links to endpoints and copy that file/directory instead of just
+	copying the surface link. This means that trying to copy a link that
+	has no endpoint (danling link) is an error. [Patch 591647] (darley)
+	(CopyRenameOneFile): this is currently disabled by default until
+	further issues with such behavior (like relative links) can be
+	handled correctly.
+
+	* tests/README: slight wording improvements
+
+2002-08-07  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* docs/BoolObj.3: added description of valid string reps for a
+	boolean object. [Bug 584794]
+	* generic/tclObj.c: optimised Tcl_GetBooleanFromObj and
+	SetBooleanFromAny to avoid parsing the string rep when it can be
+	avoided. [Bugs 584650, 472576]
+
+2002-08-07  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompile.h:
+	* generic/tclObj.c: making tclCmdNameType static ([Bug 584567], Don
+	Porter).
+
+2002-08-07  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclObj.c (Tcl_NewObj): added conditional code for
+	USE_THREAD_ALLOC; objects allocated through Tcl_NewObj() were
+	otherwise being leaked. [Bug 587488] reported by Sven Sass.
+
+2002-08-06  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.decls:
+	* unix/tclUnixThrd.c: Added stubs and implementations for
+	non-threaded build for the tclUnixThrd.c procs TclpReaddir,
+	TclpLocaltime, TclpGmtime and TclpInetNtoa. Fixes link errors in
+	stubbed & threaded extensions that include tclUnixPort.h and use any
+	of the procs readdir, localtime, gmtime or inet_ntoa (e.g. TclX 8.4)
+	[Bug 589526]
+	* generic/tclIntPlatDecls.h:
+	* generic/tclStubInit.c: Regen.
+
+2002-08-05  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	The setup and cleanup scripts are now
+	* library/tcltest/pkgIndex.tcl:	skipped when a test is skipped, fixing
+	* tests/tcltest.test:		[Bug 589859]. Test for bug added, and
+	corrected tcltest package bumped to version 2.2.
+
+	* generic/tcl.decls:	Restored Tcl_Concat to return (char *). Like
+	* generic/tclDecls.h:	Tcl_Merge, it transfers ownership of a dynamic
+	* generic/tclUtil.c:	allocated string to the caller.
+
+2002-08-04  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/CmdCmplt.3:	Applied Patch 585105 to fully CONST-ify all
+	* doc/Concat.3:		remaining public interfaces of Tcl. Notably,
+	* doc/CrtCommand.3:	the parser no longer writes on the string it
+	* doc/CrtSlave.3:	is parsing, so it is no longer necessary for
+	* doc/CrtTrace.3:	Tcl_Eval() to be given a writable string. Also
+	* doc/Eval.3:		the refactoring of the Tcl_*Var* routines by
+	* doc/ExprLong.3:	by Miguel Sofer is included, so that the
+	* doc/LinkVar.3:	"part1" argument for them no longer needs to
+	* doc/ParseCmd.3:	be writable either.
+	* doc/SetVar.3:
+	* doc/TraceVar.3:
+	* doc/UpVar.3:		Compatibility support has been enhanced so
+	* generic/tcl.decls:	that a #define of USE_NON_CONST will remove
+	* generic/tcl.h:	all possible source incompatibilities with the
+	* generic/tclBasic.c:	8.3 version of the header file(s). The new
+	* generic/tclCmdMZ.c:	#define of USE_COMPAT_CONST now does what
+	* generic/tclCompCmds.c:USE_NON_CONST used to do -- disable only those
+	* generic/tclCompExpr.c:new CONST's that introduce irreconcilable
+	* generic/tclCompile.c:	incompatibilities.
+	* generic/tclCompile.h:
+	* generic/tclDecls.h:	Several bugs are also fixed by this patch.
+	* generic/tclEnv.c:	[Bugs 584051,580433] [Patches 585105,582429]
+	* generic/tclEvent.c:
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclInterp.c:
+	* generic/tclLink.c:
+	* generic/tclObj.c:
+	* generic/tclParse.c:
+	* generic/tclParseExpr.c:
+	* generic/tclProc.c:
+	* generic/tclTest.c:
+	* generic/tclUtf.c:
+	* generic/tclUtil.c:
+	* generic/tclVar.c:
+	* mac/tclMacTest.c:
+	* tests/expr-old.test:
+	* tests/parseExpr.test:
+	* unix/tclUnixTest.c:
+	* unix/tclXtTest.c:
+	* win/tclWinTest.c:
+
+2002-08-01  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: bugfix (reading freed memory). Testsuite
+	passed on linux/i386, compile-13.1 hung on linux/alpha.
+
+2002-08-01  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: added a reference count for the complete
+	execution stack, instead of Tcl_Preserve/Tcl_Release.
+
+2002-08-01  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclCkalloc.c (TclFinalizeMemorySubsystem): Don't lock the
+	ckalloc mutex before invoking the Tcl_DumpActiveMemory function since
+	it also locks the same mutex. This code is only executed when "memory
+	onexit filename" has been executed and Tcl is compiled with
+	-DTCL_MEM_DEBUG.
+
+2002-08-01  Reinhard Max  <max@suse.de>
+
+	* win/tclWinPort.h: The windows headers don't provide socklen_t, so we
+	have to do it.
+
+2002-07-31  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclInt.h (USE_THREAD_ALLOC): for unshared objects,
+	TclDecrRefCount now frees the internal rep before the string rep -
+	just like the non-macro Tcl_DecrRefCount/TclFreeObj [Bug 524802]. For
+	the other allocators the fix was done on 2002-03-06.
+
+2002-07-31  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclInterp.c: signed/unsigned comparison warning fixed
+	(Vince Darley).
+
+2002-07-31  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/tcl.m4 (SC_BUGGY_STRTOD): Enabled caching of test results.
+
+	* unix/tcl.m4 (SC_BUGGY_STRTOD): Solaris 2.8 still has a buggy
+	strtod() implementation; make sure we detect it.
+
+	* tests/expr.test (expr-22.*): Marked as non-portable because it seems
+	that these tests have an annoying tendency to fail in unexpected ways.
+	[Bugs 584825, 584950, 585986]
+
+2002-07-30  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tests/io.test:
+	* generic/tclIO.c (WriteChars): Added flag to break out of loop if
+	nothing of the input is consumed at all, to prevent infinite looping
+	of called with a non-UTF-8 string. Fixes Bug 584603 (partially). Added
+	new test "io-60.1". Might need additional changes to Tcl_Main so that
+	unprintable results are printed as binary data.
+
+2002-07-29  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in: Use CC_SEARCH_FLAGS instead of LD_SEARCH_FLAGS
+	when linking with ${CC}.
+	* unix/configure: Regen.
+	* unix/configure.in: Don't subst CC_SEARCH_FLAGS or LD_SEARCH_FLAGS
+	since this is now done in tcl.m4.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Document and set CC_SEARCH_FLAGS
+	whenever LD_SEARCH_FLAGS is set. [Patch 588290]
+
+2002-07-29  Reinhard Max  <max@suse.de>
+
+	* unix/tcl.m4 (SC_SERIAL_PORT): Fixed detection for cases when
+                                        configure's stdin is not a tty.
+
+	* unix/tclUnixPort.h:
+	* generic/tclIOSock.c:          Changed size_t to socklen_t in
+                                        socket-related function calls.
+
+	* unix/configure.in:            Added test and fallback definition
+                                        for socklen_t.
+
+	* unix/configure:               generated.
+
+2002-07-29  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclObj.c: fixed a comment
+
+	* generic/tcl.h:
+	* generic/tclBasic.c:
+	* generic/tclInterp.c: added the new flag TCL_EVAL_INVOKE to the
+	interface of the Tcl_Eval* functions, removing the
+	TCL_EVAL_NO_TRACEBACK added yesterday: alias invocations not only
+	require no tracebacks, but also look up the command name in the global
+	scope - see new test interp-9.4
+	* tests/interp.test: added 9.3 to test for safety of aliases to hidden
+	commands, 9.4 to test for correct command lookup scope.
+
+2002-07-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/regc_locale.c (cclass): [[:xdigit:]] is only a defined
+	concept on western characters, so should not allow any unicode digit,
+	and hence number of ranges in [[:xdigit:]] is fixed.
+	* tests/reg.test: Added test to detect the bug.
+	* generic/regc_cvec.c (newcvec): Corrected initial size value in
+	character vector structure. [Bug 578363] Many thanks to
+	pvgoran@users.sf.net for tracking this down.
+
+2002-07-28  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tcl.h:
+	* generic/tclBasic.c: added the new flag TCL_EVAL_NO_TRACEBACK to the
+	interface of the Tcl_Eval* functions. Modified the error message for
+	too many nested evaluations.
+	* generic/tclInterp.h: changed the Alias struct to be of variable
+	length and store the prefix arguments directly (instead of a pointer
+	to a Tcl_Obj list). Made AliasObjCmd call Tcl_EvalObjv instead of
+	TclObjInvoke - thus making aliases trigger execution traces [Bug
+	582522].
+	* tests/interp.test:
+	* tests/stack.test: adapted to the new error message.
+	* tests/trace.test: added tests for aliases firing the exec traces.
+
+2002-07-27  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in: Revert fix for Tcl bug 529801 since it was
+	incorrect and broke the build on other systems. Fix [Bug 587299]. Add
+	MAJOR_VERSION, MINOR_VERSION, PATCH_LEVEL, SHLIB_LD_FLAGS,
+	SHLIB_LD_LIBS, CC_SEARCH_FLAGS, LD_SEARCH_FLAGS, and LIB_FILE
+	variables to support more generic library build/install rules.
+	* unix/configure: Regen.
+	* unix/configure.in: Move AC_PROG_RANLIB into tcl.m4. Move shared
+	build test and setting of MAKE_LIB and MAKE_STUB_LIB into tcl.m4. Move
+	subst of a number of variables into tcl.m4 where they are defined.
+	* unix/tcl.m4 (SC_ENABLE_SYMBOLS, SC_CONFIG_CFLAGS): Subst vars where
+	they are defined. Add MAKE_LIB, MAKE_STUB_LIB, INSTALL_LIB, and
+	INSTALL_STUB_LIB rules to deal with the ugly details of running ranlib
+	on static libs at build and install time. Replace TCL_SHLIB_LD_EXTRAS
+	with SHLIB_LD_FLAGS and use it when building a shared library.
+	* unix/tclConfig.sh.in: Add TCL_CC_SEARCH_FLAGS.
+
+2002-07-26  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: fixed Tcl_Obj leak in code corresponding to
+	the macro NEXT_INST_V(x, 0, 1) [Bug 587495].
+
+2002-07-26  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c (TclObjLookupVar): leak fix and improved comments.
+
+2002-07-26  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclVar.c (TclLookupVar): removed early returns that
+	prevented the parens from being restored. Also removed goto label as
+	it was not necessary.
+
+2002-07-24  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c:
+	* tests/expr-old.test: fix for erroneous error messages in [expr],
+	[Bug 587140] reported by Martin Lemburg.
+
+2002-07-25  Joe English  <jenglish@users.sourceforge.net>
+
+	* generic/tclProc.c: fix for [Tk Bug 219218] "error handling with
+	bgerror in Tk"
+
+2002-07-24  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: restoring full TCL_COMPILE_DEBUG
+	functionality.
+
+2002-07-24  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/unixInit.test: relaxed unixInit-3.1 to accept iso8859-15 as a
+	valid C encoding. [Bug 575336]
+
+2002-07-24  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: restoring the tcl_traceCompile functionality
+	while I repair tcl_traceExec. The core now compiles and runs also
+	under TCL_COMPILE_DEBUG, but execution in the bytecode engine can
+	still not be traced.
+
+2002-07-24  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/Makefile.in:
+	* unix/configure.in: corrected fix for [Bug 529801]: ranlib only
+	needed for static builds on Mac OS X.
+	* unix/configure: Regen.
+	* unix/tclLoadDyld.c: fixed small bugs introduced by Vince,
+	implemented library unloading correctly (needs OS X 10.2).
+
+2002-07-23  Joe English  <jenglish@users.sourceforge.net>
+
+	* doc/OpenFileChnl.3: (Updates from Larry Virden)
+	* doc/open.n:
+	* doc/tclsh.1: Fix section numbers in Unix man page references.
+	* doc/lset.n:  In EXAMPLES section, include command to set the initial
+	value used in subsequent examples.
+	* doc/http.n: Package version updated to 2.4.
+
+2002-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Enable 64 bit compilation when using
+	the native compiler on a 64 bit version of IRIX. [Bug 219220]
+
+2002-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in: Combine ranlib tests and avoid printing unless
+	ranlib is actually run.
+
+2002-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/tcl.m4 (SC_PATH_X): Set XINCLUDES to "" instead of "# no
+	special path needed" or "# no include files found" when x headers
+	cannot be located.
+
+2002-07-22  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: made tclNativeFilesystem static (since 07-19
+	changes removed its usage elsewhere), and added comments about its
+	usage.
+	* generic/tclLoad.c:
+	* generic/tcl.h:
+	* generic/tcl.decls:
+	* doc/FileSystem.3: converted last load-related ClientData parameter
+	to Tcl_LoadHandle opaque structure, removing a couple of casts in the
+	process.
+
+	* generic/tclInt.h: removed tclNativeFilesystem declaration since it
+	is now static again.
+
+2002-07-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/expr.test (expr-22.*): Added tests to help detect the
+	corrected handling.
+	* generic/tclExecute.c (IllegalExprOperandType): Improved error
+	message generated when attempting to manipulate Inf and NaN values.
+	* generic/tclParseExpr.c (GetLexeme): Allowed parser to recognise
+	'Inf' as a floating-point number. [Bug 218000]
+
+2002-07-21  Don Porter  <dgp@users.sourceforge.net>
+
+	* tclIOUtil.c: Silence compiler warning. [Bug 584408].
+
+2002-07-19  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to GetFilesystemRecord
+	* win/tclWinFile.c:
+	* unix/tclUnixFile.c: fix to subtle problem with links shown up by
+	latest tclkit builds.
+
+2002-07-19  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure:
+	* unix/configure.in:
+	* win/configure:
+	* win/configure.in: Add AC_PREREQ(2.13) in an attempt to make it more
+	clear that the configure scripts must be generated with autoconf
+	version 2.13. [Bug 583573]
+
+2002-07-19  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* unix/Makefile.in: fix to build on MacOS X [Bug 529801], bug report
+	and fix from jcw.
+
+2002-07-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* win/tclWinSerial.c (no_timeout): Made this variable static.
+
+	* generic/tclExecute.c, generic/tclCompile.c, generic/tclBasic.c:
+	* generic/tclCompile.h (builtinFuncTable, instructionTable): Added
+	prefix to these symbols because they are visible outside the Tcl
+	library.
+
+	* generic/tclCompExpr.c (operatorTable):
+	* unix/tclUnixTime.c (tmKey):
+	* generic/tclIOUtil.c (theFilesystemEpoch, filesystemWantToModify,
+	filesystemIteratorsInProgress, filesystemOkToModify): Made these
+	variables static.
+
+	* unix/tclUnixFile.c:		Renamed nativeFilesystem to
+	* win/tclWinFile.c:		tclNativeFilesystem and declared
+	* generic/tclIOUtil.c:		it properly in tclInt.h
+	* generic/tclInt.h:
+
+	* generic/tclUtf.c (totalBytes): Made this array static and const.
+
+	* generic/tclParse.c (typeTable): Made this array static and const.
+	(Tcl_ParseBraces): Simplified error handling case so that scans are
+	only performed when needed, and flags are simpler too.
+
+	* license.terms: Added AS to list of copyright holders; it's only
+	fair for the current gatekeepers to be listed here!
+
+	* tests/cmdMZ.test: Renamed constraint for clarity. [Bug 583427]
+	Added tests for the [time] command, which was previously only
+	indirectly tested!
+
+2002-07-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclInt.h:
+	* generic/tcl.h:
+	* */*Load*.c: added comments on changes of 07/17 and replaced
+	clientData with Tcl_LoadHandle in all locations.
+
+	* generic/tclFCmd.c:
+	* tests/fileSystem.test: fixed a 'knownBug' with 'file attributes ""'
+	* tests/winFCmd.test:
+	* tests/winPipe.test:
+	* tests/fCmd.test:
+	* tessts/winFile.test: added 'pcOnly' constraint to some tests to make
+	for more useful 'tests skipped' log from running all tests on
+	non-Windows platforms.
+
+2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (CallCommandTraces): delete traces now receive
+	the FQ old name of the command. [Bug 582532] (Don Porter)
+
+2002-07-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/ioUtil.test: added constraints to 1.4,2.4 so they don't run
+	outside of tcltest. [Bugs 583276, 583277]
+
+2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c (DupParsedVarName): nasty bug fixed, reported by
+	Vince Darley.
+
+2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c (TclPtrIncrVar): missing CONST in declarations,
+	inconsistent with tclInt.h. Thanks to Vince Darley for reporting, boo
+	to gcc for not complaining.
+
+2002-07-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclInt.h:
+	* generic/tclIOUtil.c:
+	* generic/tclLoadNone.c:
+	* unix/tclLoadAout.c:
+	* unix/tclLoadDl.c:
+	* unix/tclLoadDld.c:
+	* unix/tclLoadDyld.c:
+	* unix/tclLoadNext.c:
+	* unix/tclLoadOSF.c:
+	* unix/tclLoadShl.c:
+	* mac/tclMacLoad.c:
+	* win/tclWinLoad.c: modified to move more functionality to the generic
+	code and avoid duplication. Partial replacement of internal uses of
+	clientData with opaque Tcl_LoadHandle. A little further work still
+	needed, but significant changes are done.
+
+2002-07-17  D. Richard Hipp    <drh@hwaci.com>
+
+	* library/msgcat/msgcat.tcl: fix a comment that was causing problems
+	for programs (ex: mktclapp) that embed the initialization scripts in
+	strings.
+
+2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
+	* generic/tclVar.c: removing the now redundant functions to access
+	indexed variables: Tcl(Get|Set|Incr)IndexedScalar() and
+	Tcl(Get|Set|Incr)ElementOfIndexedArray().
+
+2002-07-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclExecute.c (TclExecuteByteCode): Minor fixes to make this
+	file compile with SunPro CC...
+
+2002-07-17  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: modified to do variable lookup explicitly, and
+	then either inlining the variable access or else calling the new
+	TclPtr(Set|Get|Incr)Var functions in tclVar.c
+	* generic/tclInt.h: declare some functions previously local to
+	tclVar.c for usage by TEBC.
+	* generic/tclVar.c: removed local declarations; moved all special
+	accessor functions for indexed variables to the end of the file -
+	they are unused and ready for removal, but left there for the time
+	being as they are in the internal stubs table.
+
+	** WARNING FOR BYTECODE MAINTAINERS **
+	TCL_COMPILE_DEBUG is currently not functional; will be fixed ASAP.
+
+2002-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in:
+	* win/Makefile.in: Add a more descriptive warning in the event `make
+	genstubs` needs to be rerun.
+
+2002-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in: Use dltest.marker file to keep track of when the
+	dltest package is up to date. This fixes [Bug 575768] since tcltest is
+	no longer linked every time.
+	* unix/dltest/Makefile.in: Create ../dltest.marker after a successful
+	`make all` run in dltest.
+
+2002-07-16  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/configure.in: Remove useless subst of TCL_BIN_DIR.
+
+2002-07-15  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c: inaccurate comment fixed
+
+2002-07-15  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_AddObjErrorInfo):
+	* generic/tclExecute.c (TclUpdateReturnInfo):
+	* generic/tclInt.h:
+	* generic/tclProc.c:
+	Added two Tcl_Obj to the ExecEnv structure to hold the fully qualified
+	names "::errorInfo" and "::errorCode" to cache the addresses of the
+	corresponding variables. The two most frequent setters of these
+	variables now profit from the new variable name caching.
+
+2002-07-15  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclVar.c: refactorisation to reuse already looked-up Var
+	pointers; definition of three new Tcl_Obj types to cache variable name
+	parsing and lookup for later reuse; modification of internal functions
+	to profit from the caching.
+
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclNamesp.c: adding CONST qualifiers to variable names
+	passed to Tcl_FindNamespaceVar and to variable resolvers; adding CONST
+	qualifier to the 'msg' argument to TclLookupVar. Needed to avoid code
+	duplication in the new tclVar.c code.
+
+	* tests/set-old.test:
+	* tests/var.test: slight modification of error messages due to the
+	modifications in the tclVar.c code.
+
+2002-07-15  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/unixInit.test:	Improved constraints to protect /tmp. [Bug
+	581403]
+
+2002-07-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/winFCmd.test: renamed 'win2000' and 'notWin2000' to more
+	appropriate constraint names.
+	* win/tclWinFile.c: updated comments to reflect 07-11 changes.
+	* win/tclWinFCmd.c: made ConvertFileNameFormat static again, since no
+	longer used in tclWinFile.c
+	* mac/tclMacFile.c: completed TclpObjLink implementation which was
+	previously lacking.
+	* generic/tclIOUtil.c: comment cleanup and code speedup.
+
+2002-07-14  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:	Removed declarations that duplicated entries
+	in the (internal) stub table.
+
+	* library/tcltest/tcltest.tcl:  Corrected errors in handling of
+	configuration options -constraints and -limitconstraints.
+
+	* README:		Bumped HEAD to version 8.4b2 so we can
+	* generic/tcl.h:	distinguish it from the 8.4b1 release.
+	* tools/tcl.wse.in:
+	* unix/configure*:
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/configure*:
+
+2002-07-11  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/file.n:
+	* win/tclWinFile.c: on Win 95/98/ME the long form of the path is used
+	as a normalized form. This is required because short forms are not a
+	robust representation. The file normalization function has been sped
+	up, but more performance gains might be possible, if speed is still an
+	issue on these platforms.
+
+2002-07-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl: Corrected reaction to existing but
+	false ::tcl_interactive.
+
+	* doc/Hash.3: Overlooked CONST documentation update.
+
+2002-07-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCkalloc.c: ckalloc() and friends take the block size as
+	an unsigned, so we should use %ud when reporting it in fprintf() and
+	panic().
+
+2002-07-11  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompile.c: now setting local vars undefined at compile
+	time, instead of waiting until the proc is initialized.
+	* generic/tclProc.c: use macro TclSetVarUndefined instead of directly
+	setting the flag.
+
+2002-07-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/cmdAH.test: [file attr -perm] is Unix-only, so add [catch]
+	when not inside a suitably-protected test.
+
+2002-07-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/unixFCmd.test, tests/fileName.test:
+	* tests/fCmd.test: Removed [exec] of Unix utilities that have
+	equivalents in standard Tcl. [Bug 579268] Also simplified some of
+	unixFCmd.test while I was at it.
+
+2002-07-10  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/tcltest.test:  Greatly reduced the number of [exec]s, using
+	slave interps instead.
+	* library/tcltest/tcltest.tcl:  Fixed bug uncovered in the conversion
+	where a message was written to stdout instead of [outputChannel].
+
+	* tests/basic.test:	Cleaned up, constrained, and reduced the
+	* tests/compile.test:	amount of [exec] usage in the test suite.
+	* tests/encoding.test:
+	* tests/env.test:
+	* tests/event.test:
+	* tests/exec.test:
+	* tests/io.test:
+	* tests/ioCmd.test:
+	* tests/regexp.test:
+	* tests/regexpComp.test:
+	* tests/socket.test:
+	* tests/tcltest.test:
+	* tests/unixInit.test:
+	* tests/winDde.test:
+	* tests/winPipe.test:
+
+2002-07-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/cmdAH.test: Removed [exec] of Unix utilities. [Bug 579211]
+
+	* tests/expr.test: Added tests to make sure that this works.
+	* generic/tclExecute.c (ExprCallMathFunc): Functions should also be
+	able to return wide-ints. [Bug 579284]
+
+2002-07-08  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tests/socket.test: Fixed [Bug 578164]. The original reason for the
+	was a DNS outage while running the testsuite. Changed [info hostname]
+	to 127.0.0.1 to bypass DNS, knowing that we operate on the local host.
+
+2002-07-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:		Fixed incompatibility in [viewFile].
+	* library/tcltest/tcltest.tcl:	Corrected docs. Bumped to 2.2.1.
+	* library/tcltest/pkgIndex.tcl: [Bug 578163]
+
+2002-07-08  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/cmdAH.test:
+	* tests/fCmd.test:
+	* tests/fileName.test: tests which rely on 'file link' need a
+	constraint so they don't run on older Windows OS. [Bug 578158]
+	* generic/tclIOUtil.c:
+	* generic/tcl.h:
+	* generic/tclInt.h:
+	* generic/tclTest.c:
+	* mac/tclMacChan.c:
+	* unix/tclUnixChan.c:
+	* win/tclWinChan.c:
+	* doc/FileSystem.3: cleaned up internal handling of
+	Tcl_FSOpenFileChannel to remove duplicate code, and make writing
+	external vfs's clearer and easier. No functionality change. Also
+	clarify that objects with refCount zero should not be passed in to the
+	Tcl_FS API, and prevent segfaults from occuring on such user errors.
+	[Bug 578617]
+
+2002-07-06  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/pkgMkIndex.test:  Constrained tests of [load] package indexing
+	to those platforms where the testing shared libraries have been built.
+	[Bug 578166]
+
+2002-07-05  Don Porter  <dgp@users.sourceforge.net>
+
+	* changes: added recent changes
+
+2002-07-05  Reinhard Max  <max@suse.de>
+
+	* generic/tclClock.c (FormatClock): Convert the format string to UTF8
+	before calling TclpStrftime, so that non-ASCII characters don't get
+	mangled when the result string is being converted back.
+	* tests/clock.test: Added a test for that.
+
+2002-07-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/Makefile.in (ro-test,ddd,GDB,DDD): Created new targets to
+	allow running the test suite with a read-only current directory,
+	running under ddd instead of gdb, and factored out some executable
+	names for broken sites (like mine) where gdb and ddd are installed
+	with non-standard names...
+
+	* tests/httpold.test: Altered test names to httpold-* to avoid clashes
+	with http.test, and stopped tests from failing when the current
+	directory is not writable...
+
+	* tests/event.test:		Stop these tests from failing when the
+	* tests/ioUtil.test:		current directory is not writable...
+	* tests/regexp.test:
+	* tests/regexpComp.test:
+	* tests/source.test:
+	* tests/unixFile.test:
+	* tests/unixNotfy.test:
+
+	* tests/unixFCmd.test:		Trying to make these test-files not
+	* tests/macFCmd.test:		bomb out with an error when the
+	* tests/http.test:		current directory is not writable...
+	* tests/fileName.test:
+	* tests/env.test:
+
+2002-07-05  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	*** 8.4b1 TAGGED FOR RELEASE ***
+
+2002-07-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/cmdMZ.test (cmdMZ-1.4):
+	* tests/cmdAH.test: More fixing of writable-current-dir assumption.
+	[Bug 575824]
+
+2002-07-04  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* tests/basic.test: Same issue as below; fixed [Bug 575817]
+
+2002-07-04  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tests/socket.test:
+	* tests/winPipe.test:
+	* tests/pid.test: Fixed [Bug 575848]. See below for a description the
+	general problem.
+
+	* All the bugs below are instances of the same problem: The testsuite
+	assumes [pwd] = [temporaryDirectory] and writable.
+
+	* tests/iogt.test: Fixed [Bug 575860].
+	* tests/io.test:   Fixed [Bug 575862].
+	* tests/exec.test:
+	* tests/ioCmd.test: Fixed [Bug 575836].
+
+2002-07-03  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/pkg1/direct1.tcl: removed
+	* tests/pkg1/pkgIndex.tcl: removed
+	* tests/pkgMkIndex.test:  Imported auxilliary files from tests/pkg1
+	into the test file pkgMkIndex.test itself. Formatting fixes.
+
+	* unix/Makefile.in: removed tests/pkg/* from `make dist`
+
+	* tests/pkg/circ1.tcl: removed
+	* tests/pkg/circ2.tcl: removed
+	* tests/pkg/circ3.tcl: removed
+	* tests/pkg/global.tcl: removed
+	* tests/pkg/import.tcl: removed
+	* tests/pkg/pkg1.tcl: removed
+	* tests/pkg/pkg2_a.tcl: removed
+	* tests/pkg/pkg2_b.tcl: removed
+	* tests/pkg/pkg3.tcl: removed
+	* tests/pkg/pkg4.tcl: removed
+	* tests/pkg/pkg5.tcl: removed
+	* tests/pkg/pkga.tcl: removed
+	* tests/pkg/samename.tcl: removed
+	* tests/pkg/simple.tcl: removed
+	* tests/pkg/spacename.tcl: removed
+	* tests/pkg/std.tcl: removed
+	* tests/pkgMkIndex.test: Fixed [Bug 575857] where this test file
+	expected to be able to write to [file join [testsDirectory] pkg]. Part
+	of the fix was to import several auxilliary files into the test file
+	itself.
+
+	* tests/main.test:	Cheap fix for [Bugs 575851, 575858]. Avoid
+	* tests/tcltest.test:	non-writable . by [cd [temporaryDirectory]].
+
+	* library/auto.tcl: Fix [tcl_findLibrary] to be sure it sets $varName
+	only if a successful library script is found. [Bug 577033]
+
+2002-07-03  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileCatchCmd): return
+	TCL_OUT_LINE_COMPILE instead of TCL_ERROR: let the failure happen at
+	runtime so that it can be caught [Bug 577015].
+
+2002-07-02  Joe English  <jenglish@users.sourceforge.net>
+
+	* doc/tcltest.n: Markup fixes, spellcheck.
+
+2002-07-02  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n: more refinements of the documentation.
+
+	* library/tcltest/tcltest.tcl: Added trace to be sure the stdio
+	constraint is updated whenever the [interpreter] changes.
+
+	* doc/tcltest.n:		Reverted [makeFile] and [viewFile] to
+	* library/tcltest/tcltest.tcl:	their former behavior, and documented
+	* tests/cmdAH.test:		it. Corrected misspelling of hook
+	* tests/event.test:		procedure. Restored tests.
+	* tests/http.test:
+	* tests/io.test:
+
+	* library/tcltest/tcltest.tcl: Simplified logic of [GetMatchingFiles]
+	and [GetMatchingDirectories], removing special case processing.
+
+	* doc/tcltest.n: More documentation updates. Reference sections are
+	complete. Only examples need adding.
+
+2002-07-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fCmd.test:
+	* generic/tclCmdAH.c: clearer error msgs for 'file link', as per the
+	man page.
+
+2002-07-01  Joe English  <jenglish@users.sourceforge.net>
+
+	* doc/Access.3:
+	* doc/AddErrInfo.3:
+	* doc/Alloc.3:
+	* doc/Backslash.3:
+	* doc/CrtChannel.3:
+	* doc/CrtSlave.3:
+	* doc/Encoding.3:
+	* doc/Eval.3:
+	* doc/FileSystem.3:
+	* doc/Notifier.3:
+	* doc/OpenFileChnl.3:
+	* doc/ParseCmd.3:
+	* doc/RegExp.3:
+	* doc/Tcl_Main.3:
+	* doc/Thread.3:
+	* doc/TraceCmd.3:
+	* doc/Utf.3:
+	* doc/WrongNumArgs.3:
+	* doc/binary.n:
+	* doc/clock.n:
+	* doc/expr.n:
+	* doc/fconfigure.n:
+	* doc/glob.n:
+	* doc/http.n:
+	* doc/interp.n:
+	* doc/lsearch.n:
+	* doc/lset.n:
+	* doc/msgcat.n:
+	* doc/packagens.n:
+	* doc/pkgMkIndex.n:
+	* doc/registry.n:
+	* doc/resource.n:
+	* doc/safe.n:
+	* doc/scan.n:
+	* doc/tclvars.n:  Spell-check, fixed typos (Updates from Larry Virden).
+
+2002-07-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Made Solaris use gcc for linking
+	when building with gcc to resolve problems with undefined symbols
+	being present when tcl library used with non-gcc linker at later
+	stage. Symbols were compiler-generated, so it is the compiler's
+	business to define them. [Bug 541181]
+
+2002-07-01  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n: more work in progress updating tcltest docs.
+
+	* library/tcltest/tcltest.tcl: Change [configure -match] to stop
+	treating an empty list as a list of the single pattern "*". Changed
+	the default value to [list *] so default operation remains the same.
+
+	* tests/pkg/samename.tcl: restored. needed by pkgMkIndex.test.
+
+	* library/tcltest/tcltest.tcl: restored writeability testing of
+	-tmpdir, augmented by a special exception for the deafault value.
+
+2002-07-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/concat.n: Documented the *real* behaviour of [concat]!
+
+2002-06-30  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n: more work in progress updating tcltest docs.
+
+	* tests/README:		Updated the instructions on running and
+	* tests/cmdMZ.test:	adding to the test suite. Also updated
+	* tests/encoding.test:	several tests, mostly to correctly create
+	* tests/fCmd.test:	and destroy any temporary files in the
+	* tests/info.test:	[temporaryDirectory] of tcltest.
+	* tests/interp.test:
+
+	* library/tcltest/tcltest.tcl:	Stopped checking for writeability of
+	-tmpdir value because no default directory can be guaranteed to be
+	writeable.
+
+	* tests/autoMkindex.tcl: removed.
+	* tests/pkg/samename.tcl: removed.
+	* tests/pkg/magicchar.tcl: removed.
+	* tests/pkg/magicchar2.tcl: removed.
+	* tests/autoMkindex.test: Updated auto_mkIndex tests to use [makeFile]
+	and [removeFile] so tests are done in [temporaryDirecotry] where write
+	access is guaranteed.
+
+	* library/tcltest/tcltest.tcl:	Fixed [makeFile] and [viewFile] to
+	* tests/cmdAH.test:		accurately reflect a file's contents.
+	* tests/event.test:		Updated tests that depended on buggy
+	* tests/http.test:		behavior. Also added warning messages
+	* tests/io.test:		to "-debug 1" operations to debug test
+	* tests/iogt.test:		calls to (make|remove)(File|Directory)
+
+	* unix/mkLinks: `make mklinks` on 6-27 commits.
+
+2002-06-28  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompile.h: modified the macro TclEmitPush to not call its
+	first argument repeatedly or pass it to other macros, [Bug 575194]
+	reported by Peter Spjuth.
+
+2002-06-28  Don Porter  <dgp@users.sourceforge.net>
+
+	* docs/tcltest.n:	Doc revisions in progress.
+	* library/tcltest/tcltest.tcl: Corrected -testdir default value. Was
+	not reliable, and disagreed with docs! Thanks to Hemang Lavana. [Bug
+	575150]
+
+2002-06-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/tclUnixThrd.c:	Renamed the Tcl_Platform* #defines to TclOS*
+	* unix/tclUnixPipe.c:	because they are only used internally. Also
+	* unix/tclUnixFile.c:	stopped double-#def of TclOSlstat [Bug 566099,
+	* unix/tclUnixFCmd.c:	post-rename]
+	* unix/tclUnixChan.c:
+	* unix/tclUnixPort.h:
+
+	* doc/string.n: Improved documentation for [string last] along lines
+	described in [Bug 574799] so it indicates that the supplied index
+	marks the end of the search space.
+
+2002-06-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/dde.n:		Work in progress updating the documentation
+	* doc/http.n:		of the packages that come bundled with
+	* doc/msgcat.n:		the Tcl source distribution, notably tcltest.
+	* doc/registry.n:
+	* doc/tcltest.n:
+
+	* library/tcltest/tcltest.tcl:  Made sure that the TCLTEST_OPTIONS
+	environment variablle configures tcltest at package load time.
+
+2002-06-26  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fileSystem.test:
+	* generic/tclIOUtil.c: fix to handling of empty paths "" which are not
+	claimed by any filesystem [Bug 573758]. Ensure good error messages
+	are given in all cases.
+	* tests/cmdAH.test:
+	* unix/tclUnixFCmd.c: fix to bug reported as part of [Patch 566669].
+	Thanks to Taguchi, Takeshi for the report.
+
+2002-06-26  Reinhard Max  <max@suse.de>
+
+	* unix/tclUnixTime.c: Make [clock format] respect locale settings.
+	* tests/clock.test:   [Bug 565880]. ***POTENTIAL INCOMPATIBILITY***
+
+2002-06-26  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* doc/CrtInterp.3:
+	* doc/StringObj.3: clarifications by Don Porter, [Bug 493995] and [Bug
+	500930].
+
+2002-06-24  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	Corrected suppression of -verbose skip
+	* tests/tcltest.test:		and start by [test -output]. Also
+	corrected test suite errors exposed by corrected code. [Bug 564656]
+
+2002-06-25  Reinhard Max  <max@suse.de>
+
+	* unix/tcl.m4:       New macro SC_CONFIG_MANPAGES.
+	* unix/configure.in: Added support for symlinks and compression when
+	* unix/Makefile.in:  installing the manpages. [Patch 518052]
+	* unix/mkLinks.tcl:  Default is still hardlinks and no compression.
+
+	* unix/mkLinks:      generated
+	* unix/configure:
+
+	* unix/README:       Added documentation for the new features.
+
+	* unix/tcl.m4 (SC_PATH_TCLCONFIG): Replaced ${exec_prefix}/lib by
+	${libdir}.
+
+2002-06-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclUtil.c (TclGetIntForIndex): Fix of critical [Bug 533364]
+	generated when the index is bad and the result is a shared object. The
+	T_ASTO(T_GOR, ...) idiom likely exists elsewhere though. Also removed
+	some cruft that just complicated things to no advantage.
+	(SetEndOffsetFromAny): Same fix, though this wasn't on the path
+	excited by the bug.
+
+2002-06-24  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	Implementation of TIP 101. Adds abd
+	* tests/parseOld.test:		exports a [configure] command from
+	* tests/tcltest.test:		tcltest.
+
+2002-06-22  Don Porter  <dgp@users.sourceforge.net>
+
+	* changes: updated changes file for 8.4b1 release.
+
+	* library/tcltest/tcltest.tcl:	Corrections to tcltest and the Tcl
+	* tests/basic.test:		test suite so that a test with options
+	* tests/cmdInfo.test:		-constraints knownBug
+	* tests/compile.test:		-limitConstraints 1 only tests the
+	* tests/encoding.test:		knownBug tests. Mostly involves
+	* tests/env.test:		replacing direct access to the
+	* tests/event.test:		testConstraints array with calls to
+	* tests/exec.test:		the testConstraint command (which
+	* tests/execute.test:		requires tcltest version 2)
+	* tests/fCmd.test:
+	* tests/format.test:
+	* tests/http.test:
+	* tests/httpold.test:
+	* tests/ioUtil.test:
+	* tests/link.test:
+	* tests/load.test:
+	* tests/namespace.test:
+	* tests/pkgMkIndex.test:
+	* tests/reg.test:
+	* tests/result.test:
+	* tests/scan.test:
+	* tests/stack.test:
+
+2002-06-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tools/tcl.wse.in (Disk Label), unix/tcl.spec (version):
+	* win/README.binary, README, win/configure.in, unix/configure.in:
+	* generic/tcl.h (TCL_RELEASE_*, TCL_PATCH_LEVEL): Bump to beta1.
+
+2002-06-21  Joe English  <jenglish@users.sourceforge.net>
+
+	* generic/tclCompExpr.c:
+	* generic/tclParseExpr.c: LogSyntaxError() should reset the
+	interpreter result [Bug 550142 "Tcl_ExprObj -> abort"]
+
+2002-06-21  Don Porter  <dgp@users.sourceforge.net>
+
+	* unix/Makefile.in:	Updated all package install directories
+	* win/Makefile.in:	to match current Major.minor versions
+	* win/makefile.bc:	of the packages. Added tcltest package
+	* win/makefile.vc:	to installation on Windows.
+
+	* library/init.tcl:  Corrected comments and namespace style issues.
+	Thanks to Bruce Stephens. [Bug 572025]
+
+2002-06-21  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/cmdAH.test:          Added TIP#99 implementation of 'file
+	* tests/fCmd.test:           link'. Supports creation of symbolic and
+	* tests/fileName.test:       hard links in the native filesystems and
+	* tests/fileSystem.test:     in vfs's, when the individual filesystem
+	* generic/tclTest.c:         supports the concept.
+	* generic/tclCmdAH.c:
+	* generic/tclIOUtil.c:
+	* generic/tcl.h:
+	* generic/tcl.decls:
+	* doc/FileSystem.3:
+	* doc/file.n:
+	* mac/tclMacFile.c:
+	* unix/tclUnixFile.c:
+	* win/tclWinFile.c: Also enhanced speed of 'file normalize' on
+	Windows.
+
+2002-06-20  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (TclEvalObjvInternal): fix for [Bug 571385] in
+	the implementation of TIP#62 (command tracing). Vince Darley, Hemang
+	Lavana & Don Porter: thanks.
+
+2002-06-20  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclCompEvalObj): clarified and simplified the
+	logic for compilation/recompilation.
+
+2002-06-19  Joe English  <jenglish@users.sourceforge.net>
+
+	* doc/file.n: Fixed indentation. No substantive changes.
+
+2002-06-19  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): get the resultPtr again as
+	the Tcl_ObjSetVar2 may cause the result to change. [Patch 558324]
+	(watson)
+
+2002-06-19  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TEBC): removing unused "for(;;)" loop;
+	improved comments; re-indentation.
+
+2002-06-18  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TEBC):
+	- elimination of duplicated code in the non-immediate INST_INCR
+	  instructions.
+	- elimination of 103 (!) TclDecrRefCount macros. The different
+	  instructions now jump back to a common "DecrRefCount zone" at the
+	  top of the loop. The macro "ADJUST_PC" was replaced by two macros
+	  "NEXT_INST_F" and "NEXT_INST_V" that take three params
+	  (pcAdjustment, # of stack objects to discard, resultObjPtr handling
+	  flag). The only instructions that retain a TclDecrRefCount are
+	  INST_POP (for speed), the common code for the non-immediate
+	  INST_INCR, INST_FOREACH_STEP and the two INST_LSET.
+
+	The object size of tclExecute.o was reduced by approx 20% since the
+	start of the consolidation drive, while making room for some peep-hole
+	optimisation at runtime.
+
+2002-06-18  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TEBC, INST_DONE): small bug in the panic code
+	for tcl-stack corruption.
+
+2002-06-17  David Gravereaux <davygrvy@pobox.com>
+
+	Trims to support the removal of RESOURCE_INCLUDED from rc scripts from
+	[FRQ 565088].
+
+	* generic/tcl.h: moved the #ifndef RC_INVOKED start block up in the
+	file. rc scripts don't need to know thread mutexes.
+
+	* win/tcl.rc:
+	* win/tclsh.rc: removed the #define RESOURCE_INCLUDED to let the
+	built-in -DRC_INVOKED to the work.
+
+2002-06-17  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* doc/CrtTrace.3:        Added TIP#62 implementation of command
+	* doc/trace.n:           execution tracing [FRQ 462580] (lavana).
+	* generic/tcl.h:         This includes enter/leave tracing as well
+	* generic/tclBasic.c:    as inter-procedure stepping.
+	* generic/tclCmdMZ.c:
+	* generic/tclCompile.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
+	* generic/tclVar.c:
+	* tests/trace.test:
+
+2002-06-17  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* win/tclWinPipe.c (BuildCommandLine): Fixed [Bug 554068] ([exec] on
+	windows did not treat { in filenames well.). Bug reported by Vince
+	Darley <vincentdarley@users.sourceforge.net>, patch provided by Vince
+	too.
+
+2002-06-17  Joe English  <jenglish@users.sourceforge.net>
+
+	* generic/tcl.h: #ifdef logic for K&R C backwards compatibility
+	changed to assume modern C by default. See [FRQ 565088] for full
+	details.
+
+2002-06-17  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/msgcat.n: Corrected en_UK references to en_GB. UK is not a
+	country designation recognized in ISO 3166.
+
+	* library/msgcat/msgcat.tcl:  More Windows Registry locale codes from
+	Bruno Haible.
+
+	* doc/msgcat.n:
+	* library/msgcat/msgcat.tcl:
+	* library/msgcat/pkgIndex.tcl:
+	* tests/msgcat.test:  Revised locale initialization to interpret
+	environment variable locale values according to XPG4, and to recognize
+	the LC_ALL and LC_MESSAGES values over that of LANG. Also added many
+	Windows Registry locale values to those recognized by msgcat. Revised
+	tests and docs. Bumped to version 1.3. Thanks to Bruno Haible for the
+	report and assistance crafting the solution. [Bug 525522, 525525]
+
+2002-06-16  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompile.c (TclCompileTokens): a better algorithm for the
+	previous bug fix.
+
+2002-06-16  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompile.c (TclCompileTokens):
+	* tests/compile.test: [Bug 569438] in the processing of dollar
+	variables; report by Georgios Petasis.
+
+2002-06-16  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: bug in the consolidation of the INCR_..._STK
+	instructions; the bug could not be exercised as the (faulty)
+	instruction INST_INCR_ARRAY_STK was never compiled-in (related to [Bug
+	569438]).
+
+2002-06-14  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): runtime peep-hole
+	optimisation of variables (INST_STORE, INST_INCR) and commands
+	(INST_INVOKE); faster check for the existence of a catch.
+	(TclExecuteByteCode): runtime peep-hole optimisation of comparisons.
+	(TclExecuteByteCode): runtime peep-hole optimisation of INST_FOREACH -
+	relies on peculiarities of the code produced by the bytecode compiler.
+
+2002-06-14  David Gravereaux <davygrvy@pobox.com>
+
+	* win/rules.vc: The test for compiler optimizations was in error.
+	Thanks goes to Roy Terry <royterry@earthlink.net> for his assistance
+	with this.
+
+2002-06-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/trace.n, tests/trace.test:
+	* generic/tclCmdMZ.c (Tcl_TraceObjCmd,TclTraceCommandObjCmd)
+	(TclTraceVariableObjCmd): Changed references to "trace list" to
+	"trace info" as mandated by TIP#102.
+
+2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): consolidated code for the
+	conditional branch instructions.
+
+2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): fixed the previous patch;
+	wouldn't compile with TCL_COMPILE_DEBUG set.
+
+2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): consolidated the handling
+	of exception returns to INST_INVOKE and INST_EVAL, as well as most of
+	the code for INST_CONTINUE and INST_BREAK, in the new jump target
+	"processExceptionReturn".
+
+2002-06-13  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): consolidated variable
+	handling opcodes, replaced redundant code with some 'goto'. All
+	store/append/lappend opcodes on the same data type now share the main
+	code; same with incr opcodes.
+	* generic/tclVar.c: added the bit TCL_TRACE_READS to the possible
+	flags to Tcl_SetVar2Ex - it causes read traces to be fired prior to
+	setting the variable. This is used in the core for [lappend].
+
+	***NOTE*** the usage of TCL_TRACE_READS in Tcl_(Obj)?GetVar.* is not
+	documented; there, it causes the call to create the variable if it
+	does not exist. The new usage in Tcl_(Obj)?SetVar.* remains
+	undocumented too ...
+
+2002-06-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fCmd.test:
+	* tests/winFile.test:
+	* tests/fileSystem.test:
+	* generic/tclTest.c:
+	* generic/tclCmdAH.c:
+	* generic/tclIOUtil.c:
+	* doc/FileSystem.3:
+	* mac/tclMacFile.c:
+	* unix/tclUnixFile.c:
+	* win/tclWinFile.c: fixed up further so both compiles and actually
+	works with VC++ 5 or 6.
+	* win/tclWinInt.h:
+	* win/tclWin32Dll.c: cleaned up code and vfs tests and added tests for
+	the internal changes of 2002-06-12, to see whether WinTcl on NTFS can
+	coexist peacefully with links in the filesystem. Added new test
+	command 'testfilelink' to enable the newer code to be tested.
+	* tests/fCmd.test: (made certain tests of 'testfilelink' not run on
+	unix).
+
+2002-06-12  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* tclBasic.c (Tcl_DeleteTrace): fixed [Bug 568123] (thanks to Hemang
+	Lavana)
+
+2002-06-12  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinFile.c: corrected the symbolic link handling code to allow
+	it to compile. Added real definition of REPARSE_DATA_BUFFER (found in
+	winnt.h). Most of the added definitions appear to have correct,
+	cross-Win-version equivalents in winnt.h and should be removed, but
+	just making things "work" for now.
+
+2002-06-12  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c:
+	* generic/tcl.decls:
+	* generic/tclDecls.h: made code for Tcl_FSNewNativePath agree with man
+	pages.
+
+	* doc/FileSystem.3: clarified the circumstances under which certain
+	functions are called in the presence of symlinks.
+
+	* win/tclWinFile.c:
+	* win/tclWinPort.h:
+	* win/tclWinInt.h:
+	* win/tclWinFCmd.c:  Fix for Windows to allow 'file lstat', 'file
+	type', 'glob -type l', 'file copy', 'file delete', 'file normalize',
+	and all VFS code to work correctly in the presence of symlinks
+	(previously Tcl's behaviour was not very well defined). This also
+	fixes possible serious problems in all versions of WinTcl where 'file
+	delete' on a NTFS symlink could delete the original, not the symlink.
+	Note: symlinks cannot yet be created in pure Tcl.
+
+2002-06-11  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c:
+	* generic/tclCompCmds.c:
+	* generic/tclInt.h: reverted the new compilation functions; replaced
+	by a more general approach described below.
+
+	* generic/tclCompCmds.c:
+	* generic/tclCompile.c: made *all* compiled variable access attempts
+	create an indexed variable - even get or incr without previous set.
+	This allows indexed access to local variables that are created and set
+	at runtime, for example by [global], [upvar], [variable], [regexp],
+	[regsub].
+
+2002-06-11  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* doc/global.n:
+	* doc/info.n:
+	* test/info.test:
+	* generic/tclCmdIL.c: fix for [Bug 567386], [info locals] was
+	reporting some linked variables.
+
+	* generic/tclBasic.c:
+	* generic/tclCompCmds.c:
+	* generic/tclInt.h: added compile functions for [global], [variable]
+	and [upvar]. They just declare the new local variables, the commands
+	themselves are not compiled-in. This gives a notably faster read
+	access to these linked variables.
+
+2002-06-11  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: optimised algorithm for exception range
+	lookup; part of [Patch 453709].
+
+2002-06-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* unix/tclUnixFCmd.c: fixed [Bug 566669]
+	* generic/tclIOUtil.c: improved and sped up handling of native paths
+	(duplication and conversion to normalized paths), particularly on
+	Windows.
+	* modified part of above commit, due to problems on Linux. Will
+	re-examine bug report and evaluate more closely.
+
+2002-06-07  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/tcltest.test:  More corrections to test suite so that tests of
+	failing [test]s don't show up themselves as failing tests.
+
+2002-06-07  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclExecute.c: Tidied up headers in relation to float.h to
+	cut the cruft and ensure DBL_MAX is defined since doubles seem to be
+	the same size everywhere; if the assumption isn't true, the variant
+	platforms had better have run configure...
+
+	* unix/tclUnixPort.h (EOVERFLOW): Added code to define it if it
+	wasn't previously defined. Also some other general tidying and adding
+	of comments. [Bugs 563122, 564595]
+	* compat/tclErrno.h: Added definition for EOVERFLOW copied from
+	Solaris headers; I've been unable to find any uses of EFTYPE, which
+	was the error code previously occupying the slot, in Tcl, or any
+	definition of it in the Solaris headers.
+
+2002-06-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/dltest/Makefile.in: Remove hard coded CFLAGS=-g and add
+	CFLAGS_DEBUG, CFLAGS_OPTIMIZE, and CFLAGS_DEFAULT varaibles. [Bug
+	565488]
+
+2002-06-06  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/tcltest.test:  Corrections to test suite so that tests of
+	failing [test]s don't show up themselves as failing tests.
+
+	* tests/io.test: Fixed up namespace variable resolution issues
+	revealed by running test suite with "-singleproc 1".
+
+	* doc/tcltest.n:
+	* library/tcltest/tcltest.tcl:
+	* tests/tcltest.test: Several updates to tcltest.
+	  1) changed to lazy initialization of test constraints
+	  2) deprecated [initConstraintsHook]
+	  3) repaired badly broken [limitConstraints].
+	  4) deprecated [threadReap] and [mainThread]
+	[Patch 512214, Bug 558742, Bug 461000, Bug 534903]
+
+2002-06-06  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclUnixThrd.c (TclpReaddir, TclpLocaltime, TclpGmtime): added
+	mutex wrapped calls to readdir, localtime & gmtime in case their
+	thread-safe *_r counterparts are not available.
+	* unix/tcl.m4: added configure check for readdir_r
+	* unix/tcl.m4 (Darwin): set TCL_DEFAULT_ENCODING to utf-8 on MacOSX
+	(where posix file apis expect utf-8, not iso8859-1).
+	* unix/configure: regen
+	* unix/Makefile.in: set DYLD_LIBRARY_PATH in parallel to
+	LD_LIBRARY_PATH for MacOSX dynamic linker.
+	* generic/tclEnv.c (TclSetEnv): fix env var setting on MacOSX (adapted
+	from [Patch 524352] by jkbonfield).
+
+2002-06-05  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/Tcl_Main.3: Documented $tcl_rcFileName and added more
+	clarifications about the intended use of Tcl_Main(). [Bug 505651]
+
+2002-06-05  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclFileName.c (TclGlob): mac specific fix to recent changes
+	in 'glob -tails' handling.
+	* mac/tclMacPort.h:
+	* mac/tclMacChan.c: fixed TIP#91 bustage.
+	* mac/tclMacResource.c (Tcl_MacConvertTextResource): added utf
+	conversion of text resource contents.
+	* tests/macFCmd.test (macFCmd-1.2): allow CWIE creator.
+
+2002-06-04  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:
+	* tests/init.test:
+	* tests/tcltest.test:	Added more TIP 85 tests from Arjen Markus.
+	Converted tcltest.test to use a private namespace. Fixed bugs in
+	[tcltest::Eval] revealed by calling [tcltest::test] from a non-global
+	namespace, and namespace errors in init.test.
+
+2002-06-04  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/README: Update msys+mingw URL.
+
+2002-06-03  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:
+	* library/tcltest/tcltest.tcl:
+	* library/tcltest/pkgIndex.tcl:
+	* tests/tcltest.test:  Implementation of TIP 85. Allows tcltest users
+	to add new legal values of the -match option to [test], associating
+	each with a Tcl command that does the matching of expected results
+	with actual results of tests. Thanks to Arjen Markus. => tcltest 2.1
+	[Patch 521362]
+
+2002-06-03  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* doc/namespace.n: added description of [namepace forget] behaviour
+	for unqualified patterns. [Bug 559268]
+
+2002-06-03  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: reverting an accidental modification in the
+	last commit.
+
+2002-06-03  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* doc/Tcl.n: clarify the empty variable name issue ([Bug 549285]
+	reported by Tom Krehbiel, patch by Don Porter).
+
+2002-05-31  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/package.tcl:  Fixed leak of slave interp in [pkg_mkIndex].
+	Thanks to Helmut for report. [Bug 550534]
+
+	* tests/io.test:
+	* tests/main.test:  Use the "stdio" constraint to control whether an
+	[open "|[interpreter]"] is attempted.
+
+	* generic/tclExecute.c (TclMathInProgress,TclExecuteByteCode
+	(ExprCallMathFunc):
+	* generic/tclInt.h (TclMathInProgress):
+	* unix/Makefile.in (tclMtherr.*):
+	* unix/configure.in (NEED_MATHERR):
+	* unix/tclAppInit.c (matherr):
+	* unix/tclMtherr.c (removed file):
+	* win/tclWinMtherr.c (_matherr): Removed internal routine
+	TclMathInProgress and Unix implementation of matherr(). These are now
+	obsolete, dealing with very old versions of the C math library.
+	Windows version is retained in case Borland compilers require it, but
+	it is inactive. Thanks to Joe English. [Bug 474335, Patch 555635]
+
+	* unix/configure: regen
+
+2002-05-30  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
+	* generic/tclCompile.h: removed exprIsJustVarRef and
+	exprIsComparison from the ExprInfo and CompileEnv structs. These
+	were set, but not used since dec 1999 [Bug 562383].
+
+2002-05-30  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c (TclGlob): fix to longstanding 'knownBug' in
+	fileName tests 15.2-15.4, and fix to a new Tcl 8.4 bug in certain uses
+	of 'glob -tails'.
+	* tests/fileName.test: removed 'knownBug' flag from some tests, added
+	some new tests for above bugs.
+
+2002-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure: regen'ed
+	* unix/configure.in: replaced bigendian check with autoconf standard
+	AC_C_BIG_ENDIAN, which defined WORDS_BIGENDIAN on bigendian systems.
+	* generic/tclUtf.c (Tcl_UniCharNcmp):
+	* generic/tclInt.h (TclUniCharNcmp): use WORDS_BIGENDIAN instead of
+	TCL_OPTIMIZE_UNICODE_COMPARE to enable memcmp alternative.
+
+	* generic/tclExecute.c (TclExecuteByteCode INST_STR_CMP):
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): changed the case for choosing
+	the Tcl_UniCharNcmp compare to when both objs are of StringType, as
+	benchmarks show that is the optimal check (both bigendian and
+	littleendian systems).
+
+2002-05-29  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclMain.c: Removed "dummy" reference to Tcl_LinkVar. It is
+	no longer needed since Tcl_Main() now actually calls Tcl_LinkVar().
+	Thanks to Joe English for pointing that out.
+
+2002-05-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclExecute.c (TclExecuteByteCode):
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Use the macro version.
+	* generic/tclInt.h (TclUniCharNcmp): Optimised still further with a
+	macro for use in sensitive places like tclExecute.c
+
+	* generic/tclUtf.c (Tcl_UniCharNcmp): Use new flag to figure out when
+	we can use an optimal comparison scheme, and default to the old scheme
+	in other cases which is at least safe.
+	* unix/configure.in (TCL_OPTIMIZE_UNICODE_COMPARE): New optional flag
+	that indicates when we can use memcmp() to compare Unicode strings
+	(i.e. when the high-byte of a Tcl_UniChar precedes the low-byte.)
+
+2002-05-29  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
+	* generic/tclUtf.c: added TclpUtfNcmp2 private command that
+	mirrors Tcl_UtfNcmp, but takes n in bytes, not utf-8 chars. This
+	provides a faster alternative for comparing utf strings	internally.
+	(Tcl_UniCharNcmp, Tcl_UniCharNcasecmp): removed the explicit end of
+	string check as it wasn't correct for the function (by doc and logic).
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): reworked the string equal
+	comparison code to use TclpUtfNcmp2 as well as short-circuit for
+	equal objects or unequal length strings in the equal case.
+	Removed the use of goto and streamlined the other parts.
+
+	* generic/tclExecute.c (TclExecuteByteCode): added check for object
+	equality in the comparison instructions. Added short-circuit for !=
+	length strings in INST_EQ, INST_NEQ and INST_STR_CMP. Reworked
+	INST_STR_CMP to use TclpUtfNcmp2 where appropriate, and only use
+	Tcl_UniCharNcmp when at least one of the objects is a Unicode obj with
+	no utf bytes.
+
+	* generic/tclCompCmds.c (TclCompileStringCmd): removed error creation
+	in code that no longer throws an error.
+
+	* tests/string.test:
+	* tests/stringComp.test: added more string comparison checks.
+
+	* tests/clock.test: better qualified 9.1 constraint check for %s.
+
+2002-05-28  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclThreadAlloc.c (TclpRealloc, TclpFree): protect
+	against the case when NULL is based.
+
+	* tests/clock.test: added clock-9.1
+	* compat/strftime.c:
+	* generic/tclClock.c:
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h:
+	* unix/tclUnixTime.c: fix for Windows msvcrt mem leak caused by using
+	an env(TZ) setting trick for in clock format -gmt 1. This also makes
+	%s seem to work correctly with -gmt 1 as well as making it a lot
+	faster by avoid the env(TZ) hack. TclpStrftime now takes useGMT as an
+	arg. [Bug 559376]
+
+2002-05-28  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fixes to Tcl_FSLoadFile when called on a file
+	inside a vfs. This should avoid leaving temporary files sitting
+	around on exit. [Bug 545579]
+
+2002-05-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* win/tclWinError.c: Added comment on conversion of
+	ERROR_NEGATIVE_SEEK because that is a mapping that really belongs,
+	and not a catch-all case.
+	* win/tclWinPort.h (EOVERFLOW): Should be either EFBIG or EINVAL
+	* generic/tclPosixStr.c (Tcl_ErrnoId, Tcl_ErrnoMsg): EOVERFLOW can
+	potentially be a synonym for EINVAL.
+
+2002-05-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	=== Changes due to TIP#91 ===
+
+	* win/tclWinPort.h: Added declaration of EOVERFLOW.
+	* doc/CrtChannel.3: Added documentation of wideSeekProc.
+	* generic/tclIOGT.c (TransformSeekProc, TransformWideSeekProc):
+	Adapted to use the new channel mechanism.
+	* unix/tclUnixChan.c (FileSeekProc, FileWideSeekProc): Renamed
+	FileSeekProc to FileWideSeekProc and created new FileSeekProc which
+	has the old-style interface and which errors out with EOVERFLOW when
+	the returned file position can't fit into the return type (int for
+	historical reasons).
+	* win/tclWinChan.c (FileSeekProc, FileWideSeekProc): Renamed
+	FileSeekProc to FileWideSeekProc and created new FileSeekProc which
+	has the old-style interface and which errors out with EOVERFLOW when
+	the returned file position can't fit into the return type (int for
+	historical reasons).
+	* mac/tclMacChan.c (FileSeek): Reverted to old interface; Macs lack
+	large-file support because I can't see how to add it.
+	* generic/tclIO.c (Tcl_Seek, Tcl_Tell): Given these functions
+	knowledge of the new arrangement of channel types.
+	(Tcl_ChannelVersion): Added recognition of new version code.
+	(HaveVersion): New function to do version checking.
+	(Tcl_ChannelBlockModeProc, Tcl_ChannelFlushProc)
+	(Tcl_ChannelHandlerProc): Made these functions use HaveVersion for
+	ease of future maintainability.
+	(Tcl_ChannelBlockModeProc): Obvious lookup function.
+	* generic/tcl.h (Tcl_ChannelType): New wideSeekProc field, and
+	seekProc type restored to old interpretation.
+	(TCL_CHANNEL_VERSION_3): New channel version.
+
+2002-05-24  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tests/winPipe.test: Applied patch for [Bug 549617]. Patch and bug
+	report by Kevin Kenny <kennykb@users.sourceforge.net>.
+
+	* win/tclWinSock.c (TcpWatchProc): Fixed [Bug 557878]. We are not
+	allowed to mess with the watch mask if the socket is a server socket.
+	I believe that the original reporter is George Peter Staplin.
+
+2002-05-21  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/configure.in: Invoke SC_ENABLE_SHARED before calling
+	SC_CONFIG_CFLAGS so that the SHARED_BUILD variable can be checked
+	inside SC_CONFIG_CFLAGS.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Pass -non_shared instead of -shared
+	to ld when configured with --disable-shared under OSF. [Bug 540390]
+
+2002-05-20  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.h: added prototype for TclpFilesystemPathType().
+	* mac/tclMacChan.c: use MSL provided creator type if available instead
+	of the default 'MPW '.
+
+2002-05-16  Joe English  <jenglish@users.sf.net>
+
+	* doc/CrtObjCmd.3: Added Tcl_GetCommandFromObj, Tcl_GetCommandFullName
+	[Bugs 547987, 414921]
+
+2002-05-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/tclUnixChan.c (TtyOutputProc): #if/#endif-ed this function out
+	to stop compiler warnings. Also much general tidying of comments in
+	this file and removal of whitespace from blank lines.
+
+2002-05-13  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* unix/tclUnixChan.c (SETBREAK): Solaris thinks ioctl() takes a signed
+	second argument, and Linux thinks ioctl() takes an unsigned second
+	argument. So need a longer definition of this macro to get neither to
+	spew warnings...
+
+2002-05-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclEvent.c:
+	* generic/tclIOUtil.c:
+	* generic/tclInt.h: clean up all memory allocated by the filesystem,
+	via introduction of 'TclFinalizeFilesystem'.
+	Move TclFinalizeLoad into TclFinalizeFilesystem so we can be sure it
+	is called at just the right time.
+	Fix bad comment also. [Bug 555078 and 'fs' part of 543549]
+	* win/tclWinChan.c: fix comment referring to wrong function.
+
+2002-05-10  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/load.test:
+	* tests/safe.test:
+	* tests/tcltest.test: Corrected some list-quoting issues and other
+	matters that cause tests to fail when the patch includes special
+	characters. Report from Vince Darley. [Bug 554068]
+
+2002-05-08    David Gravereaux <davygrvy@pobox.com>
+
+	* doc/file.n:
+	* tools/man2tcl.c:
+	* tools/man2help2.tcl:  Thanks to Peter Spjuth
+	<peter.spjuth@space.se>, again. My prior fix for single-quote macro
+	mis-understanding was wrong. Reverted to reimpliment the 'macro2' proc
+	which handles single-quote macros and restored file.n text arrangement
+	to avoid single-quotes on the first line. Sorry for all the confusion.
+
+2002-05-08  David Gravereaux <davygrvy@pobox.com>
+
+	* tools/man2tcl.c:
+	* tools/man2help2.tcl: Proper source of macro error misunderstanding
+	single-quote as the leading macro command found and repaired.
+
+	* doc/file.n: Reverted to prior state before I messed with it.
+
+2002-05-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl: Corrected [uplevel] quoting when
+	[source]-ing test script in subdirectories.
+	* tests/fileName.test:
+	* tests/load.test:
+	* tests/main.test:
+	* tests/tcltest.test:
+	* tests/unixInit.test: Fixes to test suite when there's a space in the
+	working path. Thanks to Kevin Kenny.
+
+2002-05-07  David Gravereaux <davygrvy@pobox.com>
+
+	-- Changes from Peter Spjuth <peter.spjuth@space.se>
+	* tools/man2tcl.c: Increased line buffer size and a bail-out if that
+	should ever be over-run.
+	* tools/man2help.tcl: Include Courier New font in rtf header.
+	* tools/man2help2.tcl: Improved handling of CS/CE fields. Use Courier
+	New for code samples and indent better.
+
+	* doc/file.n:
+	* doc/TraceCmd.3:  winhelp conversion tools where understanding
+	a ' as the first character on a line to be an unknown macro.
+	Not knowing how to repair tools/man2tcl.c, I decided to rearrange
+	the text in the docs instead.
+
+2002-05-07  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c: fix to similar segfault when using 'glob
+	-types nonsense -dir dirname -join * *'. [Bug 553320]
+
+	* doc/FileSystem.3: further documentation on vfs.
+	* tests/cmdAH.test:
+	* tests/fileSystem.test:
+	* tests/pkgMkindex.test: Fix to testsuite bugs when running out of
+	directory whose name contains '{' or '['.
+
+2002-05-07  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* tests/basic.test: Fix for [Bug 549607]
+	* tests/encoding.test: Fix for [Bug 549610]
+	These are testsuite bugs that caused failures when the filename
+	contained spaces. Report & fix by Kevin Kenny.
+
+2002-05-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c: fix to freeing a bad object (i.e. segfault)
+	when using 'glob -types nonsense -dir dirname'.
+	* generic/tclWinFile.c: fix to [Bug 551306], also wrapped some long
+	lines.
+	* tests/fileName.test: added several tests for the above bugs.
+	* doc/FileSystem.3: clarified documentation on refCount requirements
+	of the object returned by the path type function.
+	* generic/tclIOUtil.c:
+	* win/tclWinFile.c:
+	* unix/tclUnixFile.c:
+	* mac/tclMacFile.c: moved TclpFilesystemPathType to the platform-
+	specific directories, so we can add missing platform-specific
+	implementations. On Windows, 'file system' now returns useful results
+	like "native NTFS", "native FAT" for that system. Unix and MacOS still
+	only return "native".
+	* doc/file.n: clarified documentation.
+	* tests/winFile.test: test for 'file system' returning correct values.
+	* tests/fileSystem.test: test for 'file system' returning correct
+	values. Clean up after failed previous test run.
+
+2002-04-26  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure:
+	* unix/tcl.m4: change HP-11 SHLIB_LD_LIBS from "" to ${LIBS} so that
+	the .sl knows its dependent libs.
+
+2002-04-26  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/obj.test (obj-11.[56]): Test conversion to boolean more
+	thoroughly.
+	* generic/tclObj.c (SetBooleanFromAny): Was not calling an integer
+	parsing function on native 64-bit platforms! [Bug 548686]
+
+2002-04-24  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclInt.h: corrected TclRememberJoinableThread decl to use
+	VOID instead of void.
+	* generic/tclThreadJoin.c: noted that this code isn't needed on Unix.
+
+2002-04-23  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* doc/exec.n:
+	* doc/tclvars.n: doc updates [Patch 509426] (gravereaux)
+
+2002-04-24  Daniel Steffen  <das@users.sourceforge.net>
+
+	* mac/tclMacResource.r: added check of TCLTK_NO_LIBRARY_TEXT_RESOURCES
+	#define to allow disabling the inclusion of the tcl library code in
+	the resource fork of Tcl executables and shared libraries.
+
+2002-04-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/TraceCmd.3: New file that documents Tcl_CommandTraceInfo,
+	Tcl_TraceCommand and Tcl_UntraceCommand [Bug 414927]
+
+2002-04-22  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclAlloc.c:
+	* generic/tclInt.h:
+	* generic/tclThreadAlloc.c (new):
+	* unix/Makefile.in:
+	* unix/tclUnixThrd.c:
+	* win/Makefile.in:
+	* win/tclWinInt.h:
+	* win/tclWinThrd.c: added new threaded allocator contributed by AOL
+	that significantly reduces lock contention when multiple threads are
+	in use. Only Windows and Unix implementations are ready, and the
+	Windows one may need work. It is only used by default on Unix for now,
+	and requires that USE_THREAD_ALLOC be defined (--enable-threads on
+	Unix will define this).
+
+	* generic/tclIOUtil.c (Tcl_FSRegister, Tcl_FSUnregister): corrected
+	calling of Tcl_ConditionWait to ensure that there would be a condition
+	to wait upon.
+
+	* generic/tclCmdAH.c (Tcl_FileObjCmd): added cast in FILE_SIZE.
+
+	* win/tclWinFCmd.c (DoDeleteFile): check return of setattr API calls
+	in file deletion for correct Win32 API handling.
+
+	* win/Makefile.in: correct dependencies for shell, gdb, runtest
+	targets.
+
+	* doc/clock.n:
+	* compat/strftime.c (_fmt): change strftime to correctly handle
+	localized %c, %x and %X on Windows. Added some notes about how the
+	other values could be further localized.
+
+2002-04-19  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclMain.c (Tcl_Main):  Free the memory allocated for the
+	startup script path. [Bug 543549]
+
+	* library/msgcat/msgcat.tcl:  [mcmax] wasn't using the caller's
+	namespace when determining the max translated length. Also made
+	revisions for better use of namespace variables and more efficient
+	[uplevel]s.
+
+	* doc/msgcat.n:
+	* library/msgcat/msgcat.tcl:
+	* library/msgcat/pkgIndex.tcl:  Added [mcload] to the export list of
+	msgcat; bumped to 1.2.3. [Bug 544727]
+
+2002-04-20  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.decls:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclStubInit.c:
+	* mac/tclMacFCmd.c:
+	* mac/tclMacFile.c:
+	* mac/tclMacUtil.c: Modified TclpObjNormalizePath to be alias file
+	aware, and replaced various calls to FSpLocationFrom*Path by calls to
+	new alias file aware versions FSpLLocationFrom*Path. The alias file
+	aware routines don't resolve the last component of a path if it is an
+	alias. This allows [file copy/delete] etc. to act correctly on alias
+	files. (c.f. discussion in [Bug 511666])
+
+2002-04-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/lindex.test (lindex-3.7):
+	* generic/tclUtil.c (TclGetIntForIndex): Stopped indexes from hitting
+	wide ints. [Bug 526717]
+
+2002-04-18  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclNamesp.c:
+	* tests/info.test: [Bug 545325] info level didn't report namespace
+	eval, bug report by Richard Suchenwirth.
+
+2002-04-18  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/subst.n:  Clarified documentation on handling unusual return
+	codes during substitution, and on variable substitutions implied by
+	command substitution, and vice versa. [Bug 536838]
+
+2002-04-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdIL.c (InfoBodyCmd):
+	* tests/info.test (info-2.6): Proc bodies without string reps would
+	report as empty. [Bug 545644]
+
+	* generic/tclCmdMZ.c (Tcl_SubstObj): More clarification for comment on
+	behaviour when substitutions are not well-formed, prompted by [Bug
+	536831]; alas, removing the ill-defined behaviour is a lot of work.
+
+2002-04-18  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c:
+	* tests/expr-old.test: fix for [Bug 542588] (Phil Ehrens), where "too
+	large integers" were reported as "floating-point value" in [expr]
+	error messages.
+
+2002-04-17  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclEncoding.c (EscapeFromUtfProc):
+	* generic/tclIO.c (WriteChars, Tcl_Close): corrected the handling of
+	outputting end escapes for escape-based encodings.
+	[Bug 526524] (yamamoto)
+
+2002-04-17  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:  Removed [saveState] and [restoreState] from tcltest
+	2 documentation, effectively deprecating them. [Bug 495660]
+	* library/tcltest/tcltest.tcl: Made separate export for commands kept
+	only for tcltest 1 compatibility.
+
+	* tests/iogt.test: Revised to run tests in a namespace, rather than
+	use the useless and buggy [saveState] and [restoreState] commands of
+	tcltest. Updated to use tcltest 2 as well. [Patch 544911]
+
+2002-04-16  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/io.test: Revised to run tests in a namespace, rather than use
+	the useless and buggy [saveState] and [restoreState] commands of
+	tcltest. Updated to use tcltest 2 as well. [Patch 544546]
+
+2002-04-15  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclProc.c:
+	* tests/proc-old.test: Improved stack trace for TCL_BREAK and
+	TCL_CONTINUE returns from procs. Patch by Don Porter [Bug 536955].
+
+	* generic/tclExecute.c:
+	* tests/compile.test: made bytecodes check for a catch before
+	returning; the compiled [return] is otherwise non-catchable. [Bug
+	542142] reported by Andreas Kupries.
+
+2002-04-15  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/socket.test:  Increased timeout values so that tests have
+	time to successfully complete even on slow/busy machines. [Bug 523470]
+
+	* doc/tcltest.n:
+	* library/tcltest/tcltest.tcl:
+	* tests/tcltest.test:  Revised [tcltest::test] to return errors when
+	called with invalid syntax and to accept exactly two arguments as
+	documented. Improved error messages. [Bug 497446, Patch 513983]
+	***POTENTIAL INCOMPATIBILITY***: Incompatible with previous tcltest
+	2.* releases, found only in alpha releases of Tcl 8.4.
+
+2002-04-11  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclNotify.c (TclFinalizeNotifier): remove remaining
+	unserviced events on finalization.
+
+	* win/tcl.m4: Enabled COFF as well as CV style debug info with
+	--enable-symbols to allow Dr. Watson users to see function info. More
+	info on debugging levels can be obtained at:
+	http://msdn.microsoft.com/library/en-us/dnvc60/html/gendepdebug.asp
+
+	* tests/ioCmd.test: fixed iocmd-8.15 to have mac and unixPc variants.
+
+	* generic/tclParse.c (Tcl_ParseVar): conditionally incr obj refcount
+	to prevent possible mem leak.
+
+2002-04-08  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tcl.h: no <sys/types.h> on mac.
+	* mac/tclMacFile.c: minor fixes to Vince's changes from 03-24.
+	* mac/tclMacOSA.c:
+	* mac/tclMacResource.c: added missing Tcl_UtfToExternalDString
+	conversions of resource file names.
+	* mac/tclMacSock.c (TcpGetOptionProc): fixed bug introduced by Andreas
+	on 02-25; changed strcmp's to strncmp's so that option comparison
+	behaves like on other platforms.
+	* mac/tcltkMacBuildSupport.sea.hqx (CW Pro6 changes): added support to
+	allow Tk to hookup C library stderr/stdout to TkConsole.
+	* tests/basic.test:
+	* tests/cmdAH.test:
+	* tests/encoding.test:
+	* tests/fileSystem.test:
+	* tests/ioCmd.test: fixed tests failing on mac: check for existence of
+	[exec], changed some result strings.
+
+2002-04-06  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixFCmd.c (Realpath): added a little extra code to
+	initialize a realpath arg when compiling in PURIFY mode in order to
+	prevent spurious purify warnings. We should really create our own
+	realpath implementation, but this will at least quiet purify for now.
+
+2002-04-05  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (Tcl_SubstObj):
+	* tests/subst.test:  Corrected [subst] so that return codes TCL_BREAK
+	and TCL_CONTINUE returned by variable substitution have the same
+	effect as when those codes are returned by command substitution. [Bug
+	536879]
+
+2002-04-03  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/tcltest/tcltest.tcl: added getMatchingFiles back (alias to
+	GetMatchingFiles), which was a public function in tcltest 1.0.
+
+2002-04-01  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclEnv.c:
+	* generic/tclIOUtil.c: invalidate filesystem cache when the user
+	changes env(HOME). Fixes [Bug 535621]. Also cleaned up some of the
+	documentation.
+	* tests/fileSystem.test: added test for bug just fixed.
+
+2002-04-01  Kevin Kenny  <kennykb@acm.org>
+
+	* win/tclWinTime.c (Tcl_GetTime): made the checks of clock frequency
+	more permissive to cope with the fact that Win98SE is observed to
+	return 1.19318 in place of 1.193182 for the performance counter
+	frequency.
+
+2002-03-29  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCmdMZ.c (Tcl_TraceObjCmd, TraceVarProc)
+	(TraceCommandProc, TclTraceCommandObjCmd):  corrected potential
+	double-free of traces on variables by flagging in Trace*Proc that it
+	will free the var in case the eval wants to delete the var trace as
+	well. [Bug 536937] Also converted Tcl_UntraceVar -> Tcl_UntraceVar2
+	and Tcl_Eval to Tcl_EvalEx in Trace*Proc for slight efficiency
+	improvement.
+
+2002-03-29  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/AllowExc.3:
+	* generic/tclBasic.c (Tcl_EvalObjv,Tcl_EvalEx,Tcl_EvalObjEx):
+	* generic/tclCompile.h (TclCompEvalObj):
+	* generic/tclExecute.c (TclCompEvalObj,TclExecuteByteCode):
+	* tests/basic.test: Corrected problems with Tcl_AllowExceptions having
+	influence over the wrong scope of Tcl_*Eval* calls. Patch from Miguel
+	Sofer. Report from Jean-Claude Wippler. [Bug 219181]
+
+2002-03-28  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclVar.c: Refactored CallTraces to collect repeated handling
+	of its returned value into CallTraces itself.
+
+2002-03-28  David Gravereaux <davygrvy@pobox.com>
+
+	* tools/feather.bmp:
+	* tools/man2help.tcl:
+	* tools/man2help2.tcl:
+	* win/makefile.vc: More winhelp target fixups. Added a feather bitmap
+	to the non-scrollable area and changed the color to be yellow from a
+	plain white. The colors can be whatever we want them to be, but
+	thought I would start with something bold. [Bug 527941]
+
+	* doc/SetVar.3:
+	* doc/TraceVar.3:
+	* doc/UpVar.3:  .AP macro syntax repair.
+
+2002-03-27  David Gravereaux <davygrvy@pobox.com>
+
+	* tools/man2help.tcl:
+	* win/makefile.vc:  winhelp target now copies all needed files from
+	tools/ to a workarea under $(OUT_DIR) and builds it from there. No
+	build cruft is left in tools/ anymore. All paths used in man2help.tcl
+	are now relative to where the script is. [Bug 527941]
+
+2002-03-27  David Gravereaux <davygrvy@pobox.com>
+
+	* win/.cvsignore:
+	* win/buildall.vc.bat:
+	* win/coffbase.txt:
+	* win/makefile.vc:
+	* win/nmakehlp.c (new):
+	* win/rules.vc:  First draft fix for [Bug 527941]. More changes need
+	to done to the makehelp target to get to stop leaving build files in
+	the tools/ directory. This does not address the syntax errors in the
+	man files. Having the contents of tcl.hpj(.in) inside makefile.vc
+	allows for version numbers to be replaced with macros.
+
+	The new nmakehlp.c is built by rules.vc in preprocessing and removes
+	the need to use tricky shell syntax that wasn't compatible on Win9x
+	systems. Clean targets made Win9x complient. This is a first draft
+	repair for [Bug 533862].
+
+2002-03-28  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_EvalEx): passing the correct commandSize to
+	TclEvalObjvInternal. [Bug 219362], fix by David Knoll.
+
+2002-03-28  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_EvalEx):
+	* tests/basic.test: avoid exceptional returns at level 0. [Bug 219181]
+
+2002-03-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n ([mainThread]):
+	* library/tcltest/tcltest.tcl:
+	* tests/tcltest.test:  Major code cleanup to deal with whitespace,
+	coding conventions, and namespace issues, with several minor bugs
+	fixed in the process.
+
+	* tests/main.test: Added missing [after cancel]s.
+
+2002-03-25  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/main.test: Removed workarounds for Bug 495977.
+
+	* library/tcltest/tcltest.tcl:  Keep the value of $::auto_path
+	unchanged, so that the tcltest package can test code that depends on
+	auto-loading. If a testing application needs $::auto_path pruned, it
+	should do that itself. [Bug 495726]
+	Improve the processing of the -constraints option to [test] so that
+	constraint lists can have arbitrary whitespace, and non-lists don't
+	blow things up. [Bug 495977]
+	Corrected faulty variable initialization. [Bug 534845]
+
+2002-03-25  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* doc/CrtTrace.3: small doc correction
+	* generic/tclBasic.c (Tcl_DeleteTrace): Allow NULL callback on trace
+	deletions. [Bug 534728] (Hemang Lavana)
+
+2002-03-24  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_EvalObjv): replaced obscure, incorrect code
+	as described in [Bug 533907] (Don Porter).
+
+2002-03-24  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:  Use [interpreter] to set/query the
+	executable currently running the tcltest package. [Bug 454050]
+
+	* library/tcltest/tcltest.tcl:  Allow non-proc commands to be used as
+	the customization hooks. [Bug 495662]
+
+2002-03-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFilename.c:
+	* generic/tclFCmd.c:
+	* generic/tclTest.c:
+	* generic/tcl.h:
+	* generic/tclIOUtil.c:
+	* win/tclWinFile.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinPipe.c:
+	* unix/tclUnixFile.c:
+	* unix/tclUnixFCmd.c:
+	* mac/tclMacFile.c:
+	* doc/FileSystem.3:
+	* doc/file.n:
+	* tests/cmdAH.test:
+	* tests/fileName.test:
+	* tests/fileSystem.test: (new file)
+	* tests/winFCmd.test: fix [Bug 511666] and [Bug 511658], and improved
+	documentation of some aspects of the filesystem, particularly
+	'Tcl_FSMatchInDirectory' which now might match a single file/directory
+	only, and 'file normalize' which wasn't very clear before. Removed
+	inconsistency betweens docs and the Tcl_Filesystem structure. Also
+	fixed [Bug 523217] and corrected file normalization on Unix so that
+	it expands symbolic links. Added some new tests of the filesystem
+	code (in the new file 'fileSystem.test'), and some extra tests for
+	correct handling of symbolic links. Fix to [Bug 530960] which shows up
+	on Win98. Made comparison with ".com" case insensitive in tclWinPipe.c
+
+	***POTENTIAL INCOMPATIBILITY***: But only between alpha releases
+	(users of the new Tcl_Filesystem lookup table in Tcl 8.4a4 need to
+	handle the new way in which Tcl may call Tcl_FSMatchInDirectory, and
+	'file normalize' on unix now behaves correctly). Only known impact is
+	with the 'tclvfs' extension.
+
+2002-03-22  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* tests/basic.test (basic-46.1): adding test for [Bug 533758], fixed
+	earlier today.
+
+2002-03-22  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinInt.h: moved undef of TCL_STORAGE_CLASS. [Bug 478579]
+
+2002-03-22  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_EvalObjEx):
+	* generic/tclExecute.c (TclCompEvalObj): fixed the errorInfo for
+	return codes other than (TCL_OK, TCL_ERROR) to runLevel 0.[Bug 533758]
+	Removed the static RecordTracebackInfo(), as its functionality is
+	easily replicated by Tcl_LogCommandInfo. Bug and redundancy noted by
+	Don Porter.
+
+2002-03-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/expr.n: Improved documentation for ceil and floor. [Bug 530535]
+
+2002-03-20  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/SetVar.3:
+	* doc/TraceVar.3:
+	* doc/UpVar.3:
+	* generic/tcl.h (Tcl_VarTraceProc):
+	* generic/tcl.decls (Tcl_GetVar2, Tcl_SetVar2, Tcl_TraceVar2,
+	(Tcl_UnsetVar2, Tcl_UntraceVar2, Tcl_UpVar2, Tcl_VarTraceInfo2,
+	(Tcl_GetVar2Ex, TclSetVar2Ex):
+	* generic/tclCmdMZ.c (TraceVarProc):
+	* generic/tclEnv.c (EnvTraceProc):
+	* generic/tclEvent.c (VwaitVarProc):
+	* generic/tclInt.decls (TclLookupVar,TclPrecTraceProc):
+	* generic/tclLink.c (LinkTraceProc):
+	* generic/tclUtil.c (TclPrecTraceProc):
+	* generic/tclVar.c (CallTraces, MakeUpvar, VarErrMsg, TclLookupVar,
+	(Tcl_GetVar2, Tcl_SetVar2, Tcl_TraceVar2, Tcl_UnsetVar2,
+	(Tcl_UntraceVar2, Tcl_UpVar2, Tcl_VarTraceInfo2, Tcl_GetVar2Ex,
+	(TclSetVar2Ex): Updated interfaces of generic/tclVar.c according to
+	TIP 27. In particular, the "part2" arguments were CONSTified. [Patch
+	532642]
+	* generic/tclDecls.h:
+	* generic/tclIntDecls.h: make genstubs
+
+2002-03-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/compile.test (compile-12.3): Test to detect bug 530320.
+	* generic/tclCompile.c (TclCompileTokens): Fixed buffer overrun
+	reported in bug 530320.
+
+2002-03-14  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Add configure time test for SEH support in the
+	compiler.
+	* win/tclWin32Dll.c (ESP, EBP, TclpCheckStackSpace,
+	(_except_checkstackspace_handler):
+	* win/tclWinChan.c (ESP, EBP, Tcl_MakeFileChannel,
+	(_except_makefilechannel_handler):
+	* win/tclWinFCmd.c (ESP, EBP, DoRenameFile, DoCopyFile,
+	(_except_dorenamefile_handler, _except_docopyfile_handler):
+	Implement SEH support under gcc using inline asm. Tcl and Tk should
+	now compile with Mingw 1.1. [Patch 525746]
+
+2002-03-14  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile): Handle an SEH exception
+	with EXCEPTION_EXECUTE_HANDLER instead of restarting the faulting
+	instruction with EXCEPTION_CONTINUE_EXECUTION. [Bug 466102] provides
+	an example of how restarting could send Tcl into an infinite loop.
+	[Patch 525746]
+
+2002-03-11  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile, DoDeleteFile,
+	(DoRemoveJustDirectory): Make sure we don't pass NULL or "" as a path
+	name to Win32 API functions since this was crashing under Windows 98.
+
+2002-03-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:
+	* library/tcltest/pkgIndex.tcl: Bumped tcltest package to 2.0.2.
+
+2002-03-11  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl (getMatchingFiles): Pass a proper list
+	to foreach to avoid munging a Windows patch like D:\Foo\Bar into
+	D:FooBar before the glob.
+
+2002-03-11  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclEncoding.c: Fix typo in comment.
+	* generic/tclIO.c (DoReadChars, ReadBytes, ReadChars): Use NULL value
+	instead of pointer set to NULL to make things more clear. Reorder
+	arguments so that they match the function signatures. Cleanup little
+	typos and add more descriptive comment.
+
+2002-03-08  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/README: Update to indicate that Mingw 1.1 is required to build
+	Tcl. Add section describing new msys based build process. Update
+	Cygwin build instructions so users know where to find Mingw 1.1.
+
+2002-03-08  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinFCmd.c (DoCopyFile): correctly set retval to TCL_OK.
+
+2002-03-07  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWin32Dll.c (TclpCheckStackSpace):
+	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile): Replace hard coded
+	constants with Win32 symbolic names. Move control flow statements out
+	of __try blocks since the documentation indicates it is frowned upon.
+
+2002-03-07  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/interp.n:
+	* generic/tclInterp.c (Tcl_InterpObjCmd, SlaveObjCmd,
+	(SlaveRecursionLimit):
+	* generic/tclTest.c:
+	* tests/interp.test: Added the [interp recursionlimit] command to
+	set/query the recursion limit of an interpreter. Proposal and
+	implementation from Stephen Trier. [TIP 87, Patch 522849]
+
+2002-03-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tcl.h, tools/tcl.wse.in, unix/configure.in,
+	* unix/tcl.spec, win/README.binary, win/configure.in, README:
+	Bumped patchlevel; this might need to change in the future, but it
+	will help us distinguish between the CVS version and the most recent
+	released version.
+
+2002-03-06  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclInt.h: for unshared objects, TclDecrRefCount now frees
+	the internal rep before the string rep - just like the non-macro
+	Tcl_DecrRefCount/TclFreeObj. [Bug 524802]
+
+2002-03-06  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/lsearch.n: Documentation of new features, plus examples.
+	* tests/lsearch.test: Tests of new features.
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): TIP#80 support. See
+	http://purl.org/tcl/tip/80 for details.
+
+2002-03-05  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	*** 8.4a4 TAGGED FOR RELEASE ***
+
+	* unix/tclUnixChan.c: initial remedy for [Bug 525783] flush problem
+	introduced by TIP #35. This may not satisfy true serial channels, but
+	it restores the correct flushing of std* channels on exit.
+
+	* unix/README: added --enable-langinfo doc.
+
+	* unix/tcl.spec:
+	* tools/tcl.wse.in: fixed URL refs to use www.tcl.tk or SF.
+
+2002-03-04  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* README:
+	* mac/README:
+	* unix/Makefile.in:
+	* unix/README:
+	* win/README:
+	* win/README.binary: updated to use www.tcl.tk URL.
+
+	* unix/Makefile.in: added older ChangeLogs to dist target.
+
+	* tests/io.test:
+	* tests/encoding.test: corrected iso2022 encoding results.
+	added encoding-24.*
+	* generic/tclEncoding.c (EscapeFromUtfProc): corrected output of
+	escape codes as per RFC 1468. [Patch 474358] (taguchi)
+	(TclFinalizeEncodingSubsystem): corrected potential double-free
+	when encodings were finalized on exit. [Bugs 219314, 524674]
+
+2002-03-01  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/encoding/iso2022-jp.enc:
+	* library/encoding/iso2022.enc:
+	* tools/encoding/iso2022-jp.esc:
+	* tools/encoding/iso2022.esc: gave <ESC>$B precedence over <ESC>$@,
+	based on comments (point 1) in [Bug 219283] (rfc 1468)
+
+	* tests/encoding.test: added encoding-23.* tests
+	* generic/tclIO.c (FilterInputBytes): reset the TCL_ENCODING_START
+	flags in the ChannelState when using 'gets'. [Bug 523988]
+	Also reduced the value of ENCODING_LINESIZE from 30 to 20 as this
+	seems to improve the performance of 'gets' according to tclbench.
+
+2002-02-28  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCmdMZ.c (TraceCommandProc): ensure that TraceCommandInfo
+	structure was also deleted when a command was deleted to prevent a
+	mem leak.
+
+	* generic/tclBasic.c (Tcl_CreateObjTrace): set tracePtr->flags
+	correctly.
+
+	* generic/tclTimer.c (TimerExitProc): remove remaining events in
+	tls on thread exit.
+
+2002-02-28  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclNamesp.c: allow cached fully-qualified namespace names to
+	be usable from different namespaces within the same interpreter
+	without forcing a new lookup [Patch 458872].
+
+2002-02-28  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclExecute.c: Replaced a few direct stack accesses with the
+	POP_OBJECT() macro [Bug 507181] (Don Porter).
+
+2002-02-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/GetIndex.3:
+	* generic/tcl.decls (Tcl_GetIndexFromObjStruct):
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct):  Revised the
+	prototype of the Tcl_GetIndexFromObjStruct to take its struct table as
+	a (CONST VOID *) argument, better describing what it is, maintaining
+	source compatibility, and adding CONST correctness according to TIP
+	27. Thanks to Joe English for an elegant solution. [Bug 520304]
+
+	* generic/tclDecls.h: make genstubs
+
+	* generic/tclMain.c (Tcl_Main,StdinProc):  Corrected some reference
+	count management errors on the interactive command Tcl_Obj found by
+	Purify. Thanks to Jeff Hobbs for the report and assistance.
+
+2002-02-27  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclBasic.c (Tcl_EvalTokensStandard): corrected mem leak in
+	error case.
+
+	* generic/tclTest.c (TestStatProc[123]): correct harmless UMRs.
+
+	* generic/tclLink.c (Tcl_LinkVar): correct mem leak in error case.
+
+2002-02-27  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tests/socket.test (2.7): Accepted and applied patch for [Bug 523470]
+	provided by Don Porter <dgp@users.sourceforge.net> to avoid timing
+	problems in that test.
+
+	* unix/tclUnixChan.c (TclpOpenFileChannel): Added code to regonize
+	"/dev/tty" (by name) and to not handle it as tty / serial line. This
+	is the controlling terminal and is special. Setting it into raw mode
+	as is done for other tty's is a bad idea. This is a hackish fix for
+	expect [Bug 520624]. The fix has limitation: Tcl_MakeFileChannel
+	handles tty's specially too, but is unable to recognize /dev/tty as it
+	only gets a file descriptor, and no name for it.
+
+2002-02-26  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCmdAH.c (StoreStatData): corrected mem leak.
+
+	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): prevent obj leak in
+	remedial regsub case.
+
+	* generic/tclFileName.c (Tcl_TranslateFileName): decr refcount for
+	error case to prevent mem leak.
+
+	* generic/tclVar.c (Tcl_ArrayObjCmd): removed extra obj allocation.
+
+	* unix/tclUnixSock.c (Tcl_GetHostName): added an extra
+	gethostbyname check to guard against failure with truncated
+	names returned by uname.
+
+	* unix/configure:
+	* unix/tcl.m4 (SC_SERIAL_PORT): added sys/modem.h check and defined
+	_XOPEN_SOURCE_EXTENDED for HP-11 to get updated header decls.
+
+	* unix/tclUnixChan.c: added Unix implementation of TIP #35, serial
+	port support. [Patch 438509] (schroedter)
+
+2002-02-26  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCmpCmds.c: (bugfix to the bugfix, hopefully the last)
+	Bugfix to the new [for] compiling code: was setting a exceptArray
+	parameter using another param which wasn't yet initialised, thus
+	filling it with noise.
+
+2002-02-25  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* mac/tclMacSock.c (TcpGetOptionProc): Changed to recognize the option
+	"-error". Essentially ignores the option, always returning an empty
+	string.
+
+2002-02-25  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* doc/Alloc.3:
+	* doc/LinkVar.3:
+	* doc/ObjectType.3:
+	* doc/PkgRequire.3:
+	* doc/Preserve.3:
+	* doc/TCL_MEM_DEBUG.3: Updated documentation to describe the ckalloc,
+	ckfree, ckrealloc, attemptckalloc, and attemptckrealloc macros, and
+	to accurately describe when and how they are used. [Bug 497459] (dgp)
+
+	* generic/tclHash.c (AllocArrayEntry, AllocStringEntry):
+	Before invoking ckalloc when creating a Tcl_HashEntry,
+	check that the amount of memory being allocated is
+	at least as large as sizeof(Tcl_HashEntry). The previous
+	code was allocating memory regions that were one
+	or two bytes short. [Bug 521950] (dejong)
+
+2002-02-25  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_EvalEx): avoiding a buffer overrun
+	reported by Joe English, and restoring tcl7.6 behaviour for
+	[subst]: badly terminated nested scripts will raise an error
+	and not be evaluated. [Bug 495207]
+
+2002-02-25  Don Porter  <dgp@users.sourceforge.net>
+
+	* unix/tclUnixPort.h: corrected strtoll prototype mismatch on Tru64.
+	* compat/strtod.c (strtod): simplified #includes
+	* compat/strtol.c (strtol): gather result in a long before returning
+	as a long: necessary on platforms where sizeof(int) != sizeof(long).
+
+2002-02-25  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclLoadDyld.c: updated to use Mac OS X 10.1 dyld APIs that
+	have more libdl-like semantics. [Bug 514392]
+
+2002-02-25  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompCmds: fixing a bug in patch dated 2002-02-22, in the
+	code for [for] and [while]. Under certain conditions, for long bodies,
+	the exception range parameters were badly computed. Tests forthcoming:
+	I still can't reproduce the conditions in the testsuite (!), although
+	the bug (with assorted segfault or panic!)  can be triggered from the
+	console or with the new parse.bench in tclbench.
+
+2002-02-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* compat/strtoul.c, compat/strtol.c, compat/strtod.c: Added UCHAR,
+	CONST and #includes to clean up GCC output.
+
+2002-02-23  Don Porter  <dgp@users.sourceforge.net>
+
+	* compat/strtoull.c (strtoull):
+	* compat/strtoll.c (strtoll):
+	* compat/strtoul.c (strtoul): Fixed failure to handle leading
+	sign symbols '+' and '-' and '0X' and raise overflow errors.
+	[Bug 440916]  Also corrects prototype and errno problems.
+
+2002-02-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Link with -n32 instead of -32 when
+	building on IRIX64-6.* system. [Bug 521707]
+
+2002-02-22  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:
+	* generic/tclObj.c: renamed global variable emptyString ->
+	tclEmptyString because it is no longer static.
+	* generic/tclPkg.c: Fix for panic when library is loaded on a
+	platform without backlinking without proper use of stubs. [Bug 476537]
+
+2002-02-22  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* tests/regexpComp.test: updated regexp-11.[1-4] to match changes in
+	regexp.test for new regsub syntax
+
+	* unix/configure:
+	* unix/tcl.m4: added --enable-64bit support for AIX-4 (using -q64
+	flag) when using IBM's xlc compiler.
+
+	* tests/safe.test: updated safe-8.5 and safe-8.7
+	* library/safe.tcl (CheckFileName): removed the limit on
+	sourceable file names (was only *.tcl or tclIndex files with no more
+	than one dot and 14 chars). There is enough internal protection in a
+	safe interpreter already. [Tk Bug 521560]
+
+2002-02-22  Miguel Sofer  <msofer@users.sourceforge.net>
+
+	* generic/tclCompCmds: [FR 465811]. Optimising [if], [for] and [while]
+	for constant conditions; in addition, [for] and [while] are now
+	compiled with the "loop rotation" optimisation (thanks to Kevin
+	Kenny).
+
+2002-02-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	--- TIP#76 CHANGES ---
+	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): Final-argument-less
+	[regsub] returns the modified string.
+	* doc/regsub.n: Updated docs.
+	* tests/regexp.test: Updated and added tests.
+
+	* compat/strtoll.c (strtoll):
+	* compat/strtoull.c (strtoull):
+	* unix/tclUnixPort.h:
+	* win/tclWinPort.h: Const-ing 64-bit compatability declarations. Note
+	that the return pointer is non-const because it is entirely legal for
+	the functions to be called from somewhere that owns the string being
+	passed. Fixes problem reported by Larry Virden.
+
+2002-02-21  David Gravereaux <davygrvy@pobox.com>
+
+	* win/mkd.bat (removed):
+	* win/coffbase.txt (new):
+	* win/makefile.bc:
+	* win/makefile.vc:  Changed the 'setup' target to stop using the
+	mkd.bat file and just make the directory right in the rule. Same
+	change to makefile.bc. Neither configure.in nor Makefile.in use it.
+
+	coffbase.txt will be the master list for our "prefered base addresses"
+	set by the linker. This should improve load-time (NT only) by avoiding
+	relocations. Submissions to the list by extension authors are
+	encouraged.
+
+	Added a 'tidy' target to compliment 'clean' and 'hose' to remove just
+	the outputs. Also removed the $(winlibs) macro as it wasn't being
+	used.
+
+	Stuff left to do:
+	1) get the winhelp target to stop building in the tools/ directory.
+	2) stop using rmd.bat
+	3) add more dependacy rules.
+
+	* win/tclAppInit.c:  Reverted back to -r1.6, as the header file change
+	to tclPort.h won't allow for easy embedded support outside of the
+	source dist. Thanks to Don Porter for pointing this out to me.
+
+2002-02-21  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc:
+	* win/rules.vc:  Added a new "loimpact" option that sets the
+	-ws:aggressive linker option. Off by default. It's said to keep the
+	heap use low at the expense of alloc speed.
+
+	* win/tclAppInit.c: Changed #include "tcl.h" to be tclPort.h to remove
+	the raw windows.h include. tclPort.h brings in windows.h already and
+	lessens the pre-compiled-header mush and the randomly useless #pragma
+	comment (lib,...) references throughout the big windows.h tree (as
+	observed at high linker warning levels).
+
+2002-02-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tcl.h: Better guessing of LP64/ILP32 architecture, but now
+	sensitive to presence of (suitable) <limits.h>
+
+2002-02-20  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tcl.decls (Tcl_RegExpRange,Tcl_GetIndexFromObjStruct):
+	Overlooked a few source incompatibilities. Now using CONST84.
+	* generic/tclDecls.h: make genstubs
+	* generic/tcl.h (Tcl_CmdObjTraceProc): silence warning from Sun
+	Workshop compiler.
+
+2002-02-20  David Gravereaux <davygrvy@pobox.com>
+
+	* win/buildall.vc.bat:
+	* win/makefile.vc:
+	* win/rules.vc: General clean-ups. Added compiler and linker tests for
+	a) the pentium 0x0F errata, b) optimizing (not all have this), and c)
+	linker v6 section alignment confusion. All these are tested first to
+	make sure any D4002 or LNK1117 warnings aren't displayed. The pentium
+	0x0F errata is a recommended switch. The v5 linker's section alignment
+	default is 512, but the v6 linker was changed to 4096 in an attempt to
+	speed loading on Win98. I changed the default to always be 512 across
+	both linkers, unless linking statically, then 4096 is used for the
+	claimed speed effect. Using a 512 alignment saves 12k bytes of dead
+	space in the DLL.
+
+	Added IA64 B-stepping errata switch when the compiler supports it.
+
+	Added profiling to $(lflags) when requested and also removed the
+	explict -entry option as the default works fine as is.
+
+	Removed win/tclWinInit.c from the special case section to let it use
+	the common implicit rule as the $(EXTFLAGS) macro it had was never
+	referenced anywhere.
+
+2002-02-20  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tcl.h: Added code to guess the correct settings for
+	TCL_WIDE_INT_IS_LONG and TCL_WIDE_INT_TYPE when configure doesn't tell
+	us them, as can happen with extensions.
+
+2002-02-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/format.n: Updated docs to list the specification.
+	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Made behaviour on 64-bit
+	platforms correctly meet the specification, that %d works with the
+	native word-sized integer, instead of trying to guess (wrongly)
+	from the value being passed.
+
+2002-02-19  Don Porter <dgp@users.sourceforge.net>
+
+	* changes: First draft of updated changes for 8.4a4 release.
+
+2002-02-15  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixPort.h: add strtoll/strtoull declarations for
+	platforms that do not define them.
+
+	* generic/tclIndexObj.c (STRING_AT): removed ptrdiff_t cast and
+	use of VOID* in default case (GNU-ism).
+
+2002-02-15  Kevin Kenny  <kennykb@acm.org>
+
+	* compat/strtoll.c:
+	* compat/strtoul.c:
+	* compat/strtoull.c:
+	* generic/tclIOUtil.c:
+	* generic/tclPosixStr.c:
+	* generic/tclTest.c:
+	* generic/tclTestObj.c:
+	* tests/get.test:
+	* win/Makefile.vc: Further tweaks to the TIP 72 patch to make it
+	compile under VC++.
+
+2002-02-15  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tclExecute.c:
+	* tclIOGT.c:
+	* tclIndexObj.c: Touchups to the TIP 72 patch to make it compileable
+	under Windows again. The changes are not complete, there is one nasty
+	regarding _stati64
+
+2002-02-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	+----------------------+
+	| TIP #72 IMPLEMENTED. |
+	+----------------------+
+
+	There are a lot of changes from this TIP, so please see
+	http://purl.org/tcl/tip/72.html for discussion of
+	backward-compatability issues, but the main ones modifications are in:
+
+	* generic/tcl.h: New types.
+	* generic/tcl.decls: New public functions.
+	* generic/tclExecute.c: 64-bit aware bytecode engine.
+	* generic/tclBinary.c: 64-bit handling in [binary] command.
+	* generic/tclScan.c: 64-bit handling in [scan] command.
+	* generic/tclCmdAH.c: 64-bit handling in [file] and [format]
+	commands.
+	* generic/tclBasic.c: New "wordSize" entry in ::tcl_platform.
+	* generic/tclFCmd.c: Large-file support (with many consequences.)
+	* generic/tclIO.c: Large-file support (with many consequences.)
+	* compat/strtoll.c, compat/strtoull.c: New support functions.
+	* unix/tcl.m4, unix/configure: 64-bit support and greatly enhanced
+	cacheing.
+
+	Most other changes, including all those in doc/* and test/* as well as
+	the majority in the platform directories, follow on from these.
+
+	Also coming out of the woodwork:
+	* generic/tclIndex.c: Better support for Cray PVP.
+	* win/tclWinMtherr.c: Better Borland support.
+
+	Note that, in a number of places through the Unix part of the platform
+	support, there are Tcl_Platform* references. These are expanded into
+	the correct way to call that particular underlying function, i.e. with
+	or without a '64' suffix, and should be used by people working on the
+	core in preference to the API functions they overlay so that the code
+	remains portable depending on the presence or absence of 64-bit
+	support on the underlying platform.
+
+	***POTENTIAL INCOMPATIBILITY***: Extracted from the TIP
+
+	SUMMARY OF INCOMPATIBILITIES AND FIXES
+	======================================
+
+	The behaviour of expressions containing constants that appear positive
+	but which have a negative internal representation will change, as
+	these will now usually be interpreted as wide integers. This is always
+	fixable by replacing the constant with int(constant).
+
+	Extensions creating new channel types will need to be altered as
+	different types are now in use in those areas. The change to the
+	declaration of Tcl_FSStat and Tcl_FSLstat (which are the new preferred
+	API in any case) are less serious as no non-alpha releases have been
+	made yet with those API functions.
+
+	Scripts that are lax about the use of the l modifier in format and
+	scan will probably need to be rewritten. This should be very uncommon
+	though as previously it had absolutely no effect.
+
+	Extensions that create new math functions that take more than one
+	argument will need to be recompiled (the size of Tcl_Value changes),
+	and functions that accept arguments of any type (TCL_EITHER) will need
+	to be rewritten to handle wide integer values. (I do not expect this
+	to affect many extensions at all.)
+
+2002-02-14  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* generic/tclIOCmd.c (Tcl_GetsObjCmd): Trivial fix for [Bug 517503], a
+	memory leak reported by Miguel Sofer <msofer@users.sf.net>. The leak
+	happens if an error occurs for "set var [gets $chan]" and leak one
+	empty object.
+
+2002-02-12  David Gravereaux <davygrvy@pobox.com>
+
+	* djgpp/ (new directory)
+	* djgpp/Makefile (new):
+	* unix/tclAppInit.c:
+	* unix/tclMtherr.c:
+	* unix/tclUnixFCmd.c:
+	* unix/tclUnixFile.c:
+	* unix/tclUnixInit.c:
+	* unix/tclUnixPort.h:  Early stage of DJGPP support for building Tcl
+	on DOS. Dynamic loading isn't working, yet. Requires watt32 for the
+	TCP/IP stack. No autoconf, yet. Barely tested, but makes a working exe
+	that runs Tcl in protected-mode, flat memory. [exec] and pipes will
+	need the most work as multi-tasking on DOS has to be carefully.
+
+2002-02-10  Kevin Kenny  <kennykb@acm.org>
+
+	* doc/CrtObjCmd.3:
+	* doc/CrtTrace.3:
+	* generic/tcl.decls:
+	* generic/tcl.h:
+	* generic/tclBasic.c:
+	* generic/tclInt.h:
+	* generic/tclTest.c:
+	* tests/basic.test: Added Tcl_CreateObjTrace,
+	Tcl_GetCommandInfoFromToken and Tcl_SetCommandInfoFromToken.
+	(TIPs #32 and #79.)
+
+	* generic/tclDecls.h:
+	* generic/tclStubInit.c: Regenerated Stubs tables.
+
+2002-02-08  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure:
+	* unix/tcl.m4: added -pthread for FreeBSD to EXTRA_CFLAGS and
+	LDFLAGS. Also triggered nodots only for FreeBSD-3. Added
+	AC_DEFINE(_POSIX_PTHREAD_SEMANTICS) for Solaris.
+
+	* unix/tclUnixPort.h:
+	* unix/tclUnixThrd.c: added thread-safe versions of readdir,
+	localtime, gmtime and inet_ntoa for threaded build. (jgdavidson)
+
+	* generic/tclScan.c (Tcl_ScanObjCmd): prevented ckfree being called on
+	a pointer to NULL.
+
+2002-02-07  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/DString.3:
+	* doc/Encoding.3:
+	* doc/GetCwd.3:
+	* doc/SplitPath.3:
+	* doc/Translate.3:
+	* doc/Utf.3:
+	* generic/tcl.decls:
+	* generic/tcl.h:
+	* generic/tclEncoding.c:
+	* generic/tclEnv.c:
+	* generic/tclFileName.c:
+	* generic/tclIOUtil.c:
+	* generic/tclUtf.c:
+	* generic/tclUtil.c:
+	* mac/tclMacInit.c:
+	* unix/tclUnixFile.c:
+	* unix/tclUnixInit.c:
+	* unix/tclUnixPipe.c:
+	* win/tclWin32Dll.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c:
+	* win/tclWinInit.c: Partial TIP 27 rollback. Following routines
+	restored to return (char *): Tcl_DStringAppend,
+	Tcl_DStringAppendElement, Tcl_JoinPath, Tcl_TranslateFileName,
+	Tcl_ExternalToUtfDString, Tcl_UtfToExternalDString,
+	Tcl_UniCharToUtfDString, Tcl_GetCwd, Tcl_WinTCharToUtf. Also restored
+	Tcl_WinUtfToTChar to return (TCHAR *) and Tcl_UtfToUniCharDString to
+	return (Tcl_UniChar *). Modified some callers. This change recognizes
+	that Tcl_DStrings are de-facto white-box objects.
+
+	* generic/tclDecls.h:
+	* generic/tclPlatDecls.h: make genstubs
+
+	* generic/tclCmdMZ.c: corrected use of C++-style comment.
+
+2002-02-06  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* tests/scan.test:
+	* generic/tclScan.c (Tcl_ScanObjCmd): corrected scan 0x... %x handling
+	that didn't accept the 0x as a prelude to a base 16 number. [Bug
+	495213]
+
+	* generic/tclCompCmds.c (TclCompileRegexpCmd): made early check for
+	bad RE to stop checking further.
+
+	* generic/tclCmdMZ.c (Tcl_RegsubObjCmd): added special case to search
+	for simple 'string map' style regsub calls. Delayed creation of
+	resultPtr object until an initial match is made, as the input string
+	object can then be reused for no matches.
+	(Tcl_StringObjCmd): optimization improvements to the STR_MAP
+	algorithm for zero-length and nocase cases.
+
+	* tests/regexp.test:
+	* tests/regexpComp.test: extra code coverage tests.
+
+	* tests/string.test: added 10.18 and 10.19 extra tests.
+
+	* generic/regc_locale.c (casecmp): slight performance improvement.
+
+2002-02-05  Don Porter <dgp@users.sourceforge.net>
+
+	* library/http/http.tcl:
+	* library/http/pkgIndex.tcl:  Corrected use of http::error when
+	::error was intended. Bump to http 2.4.2.
+
+2002-02-04  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* unix/tclUnixChan.c (FileOutputProc): Fixed [bug 465765] reported by
+	Dale Talcott <daletalcott@users.sourceforge.net>. Avoid writing
+	nothing into a file as STREAM based implementations will consider this
+	a EOF (if the file is a pipe). Not done in the generic layer as this
+	type of writing is actually useful to check the state of a socket.
+
+	* doc/open.n: Fixed [Bug 511540], added cross-reference to 'pid' as
+	the command to use to retrieve the pid of a command pipeline created
+	via 'open'.
+
+2002-02-01  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCmdMZ.c (Tcl_RegexpObjCmd): handle quirky about case
+	earlier to avoid shimmering problem.
+
+2002-02-01  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* tests/io.test: io-39.22 split into two tests, one platform
+	dependent, the other not. -eofchar is not empty on the windows
+	platform.
+
+2002-02-01  Vince Darley <vincentdarley@users.sourceforge.net>
+
+	* generic/tclTest.c: fix to picky windows compiler problem with the
+	'MainLoop' function declaration.
+
+2002-01-31  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* win/tclWinFCmd.c: TIP 27: Applied patch fixing CONST warnings on
+	behalf of Don Porter <dgp@users.sourceforge.net>.
+
+2002-01-30  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tcl.decls:
+	* generic/tcl.h:
+	* generic/tclInt.h: For each interface identified in the TIP 27
+	changes below as a POTENTIAL INCOMPATIBILITY, the source of the
+	incompatibility has been parameterized so that it can be removed. When
+	compiling extension code against the Tcl header files, use the
+	compiler flag -DUSE_NON_CONST to remove the irresolvable source
+	incompatibilities introduced by the TIP 27 changes. Resolvable changes
+	are left for extension authors to resolve.
+	* generic/tclDecls.h: make genstubs
+
+2002-01-30  Vince Darley <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3: added documentation for 3 public functions which
+	had been overlooked. [Bug 507701]
+	* unix/mkLinks: make mklinks
+
+2002-01-29  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* tests/regexpComp.test:
+	* generic/tclCompCmds.c (TclCompileRegexpCmd): enhanced to support
+	-nocase and -- options.
+
+2002-01-28  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/tcl.m4 (SC_LOAD_TCLCONFIG):
+	* win/tcl.m4 (SC_LOAD_TCLCONFIG): Set TCL_LIB_SPEC, TCL_STUB_LIB_SPEC,
+	and TCL_STUB_LIB_PATH to the values of TCL_BUILD_LIB_SPEC,
+	TCL_BUILD_STUB_LIB_SPEC, and TCL_BUILD_STUB_LIB_PATH when tclConfig.sh
+	is loaded from the build directory. A Tcl extension should make use of
+	the non-build versions of these variables since they will work in both
+	cases. This modification was described in TIP 34.
+
+2002-01-28  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinReg.c (regConnectRegistryProc,RecursiveDeleteKey)
+	(DeleteKey,GetKeyNames,GetType,GetValue,OpenSubKey,SetValue):
+	redid the CONSTification as previous changes caused failing tests.
+
+	* tests/regexpComp.test (new):
+	* generic/tclInt.h:
+	* generic/tclBasic.c: added TclCompileRegexpCmd entry
+	* generic/tclCompCmds.c (TclCompileStringCmd): corrected to return
+	TCL_OUT_LINE_COMPILE instead of TCL_ERROR for parsing errors, so
+	it only throws the error for runtime compile, in case the user
+	modifies 'string'.
+	(TclCompileRegexpCmd): first try at a byte-compiled regexp command. It
+	handles static strings and ^$ bounded static strings.
+	(TclCompileAppendCmd): made TclPushVarName call always use
+	TCL_CREATE_VAR as numWords is always > 2 at that point.
+
+	* generic/tclExecute.c (TclExecuteByteCode:INST_LIST): correct
+	possibly dangerous decr in macro call.
+
+	* win/tclWinInit.c (TclpFindVariable): CONSTification touch-up
+
+	* win/tclWinReg.c (OpenSubKey): corrected bug introduced in
+	CONSTification that dropped pointer reference.
+
+	* ChangeLog.2000 (new file):
+	* ChangeLog: broke changes from 2000 into ChangeLog.2000 to reduce
+	size of the main ChangeLog.
+
+2002-01-28  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclPlatDecls.h:  Added preprocessor logic to force a
+	typedef of TCHAR when __STDC__ is defined when using the uncommon
+	-Za compiler switch with the microsoft compiler.
+
+2002-01-27  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/package.n: Documented global namespace context for script
+	evaluation by [package require].
+
+2002-01-27  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.decls:
+	* generic/tclIntPlatDecls.h:
+	* mac/tclMacChan.c:
+	* mac/tclMacFCmd.c:
+	* mac/tclMacFile.c:
+	* mac/tclMacInit.c:
+	* mac/tclMacLoad.c:
+	* mac/tclMacResource.c:
+	* mac/tclMacSock.c: TIP 27 CONSTification induced changes
+
+	* tests/event.test:
+	* tests/main.test: added catches/constraints to test that
+	use features that don't exist on the mac.
+
+2002-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	Make -eofchar and -translation options read only for server sockets.
+	[Bug 496733]
+
+	* generic/tclIO.c (Tcl_GetChannelOption, Tcl_SetChannelOption):
+	Instead of returning nothing for the -translation option on a server
+	socket, always return "auto". Return the empty string enclosed in
+	quotes for the -eofchar option on a server socket. Fixup -eofchar
+	usage message so that it matches the implementation.
+	* tests/io.test: Add -eofchar tests and -translation tests to ensure
+	options are read only on server sockets.
+	* tests/socket.test: Update tests to account for -eofchar and
+	-translation option changes.
+
+2002-01-25  Don Porter <dgp@users.sourceforge.net>
+
+	* compat/strstr.c (strstr):
+	* generic/tclCmdAH.c (Tcl_FormatObjCmd):
+	* generic/tclCmdIL.c (InfoNameOfExecutableCmd):
+	* generic/tclEnv.c (ReplaceString):
+	* generic/tclFileName.c (ExtractWinRoot):
+	* generic/tclIO.c (FlushChannel,Tcl_BadChannelOption):
+	* generic/tclStringObj.c (AppendUnicodeToUtfRep):
+	* generic/tclThreadTest.c (TclCreateThread):
+	* generic/tclUtf.c (Tcl_UtfPrev):
+	* mac/tclMacFCmd.c (TclpObjListVolumes):
+	* mac/tclMacResource.c (TclMacRegisterResourceFork,
+	(BuildResourceForkList):
+	* win/tclWinInit.c (AppendEnvironment):  Sought out and eliminated
+	instances of CONST-casting that are no longer needed after the
+	TIP 27 effort.
+
+	* Following is [Patch 501006]
+	* generic/tclInt.decls (Tcl_AddInterpResolvers, Tcl_Export,
+	(Tcl_FindNamespace, Tcl_GetInterpResolvers, Tcl_ForgetImport,
+	(Tcl_Import, Tcl_RemoveInterpResolvers):
+	* generic/tclNamesp.c (Tcl_Export, Tcl_Import, Tcl_ForgetImport,
+	(Tcl_FindNamespace):
+	* generic/tclResolve.c (Tcl_AddInterpResolvers,Tcl_GetInterpResolvers,
+	(Tcl_RemoveInterpResolvers): Updated APIs in generic/tclResolve.c and
+	generic/tclNamesp.c according to the guidelines of TIP 27.
+	* generic/tclIntDecls.h: make genstubs
+
+	* Following is [Patch 505630]
+	* doc/AddErrorInfo.3:
+	* generic/tcl.decls (Tcl_LogCommandInfo):
+	* generic/tclBasic.c (Tcl_LogCommandInfo): Updated interfaces
+	of generic/tclBasic.cc according to TIP 27.
+	* generic/tclDecls.h: make genstubs
+
+	* Following is [Patch 506818]
+	* doc/Hash.3:
+	* generic/tcl.decls (Tcl_HashStats):
+	* generic/tclHash.c (Tcl_HashStats):  Updated APIs of generic/tclHash.c
+	according to guidelines of TIP 27.
+	* generic/tclDecls.h: make genstubs
+	* generic/tclVar.c (Tcl_ArrayObjCmd): Updated callers.
+
+	* Following is [Patch 506807]
+	* doc/ObjectType.3:
+	* generic/tcl.decls (Tcl_GetObjType):
+	* generic/tclObj.c (Tcl_GetObjType): Updated APIs of generic/tclObj.c
+	according to guidelines of TIP 27.
+	* generic/tclDecls.h: make genstubs
+
+	* Following is [Patch 507304]
+	* doc/Encoding.3:
+	* generic/tcl.decls (Tcl_WinUtfToTChar,Tcl_WinTCharToUtf):
+	* win/tclWin32Dll.c (Tcl_WinUtfToTChar,Tcl_WinTCharToUtf):
+	Updated interfaces in win/tclWin32Dll.c according to TIP 27.
+	* generic/tclPlatDecls.h: make genstubs
+	* generic/tclIOUtil.c (TclpNativeToNormalized):
+	* win/tclWinFCmd.c (TclpObjNormalizePath):
+	* win/tclWinFile.c (TclpFindExecutable,TclpMatchInDirectory,
+	(NativeIsExec,NativeStat):
+	* win/tclWinLoad.c (TclpLoadFile):
+	* win/tclWinPipe.c (TclpOpenFile,ApplicationType):
+	* win/tclWinReg.c (regConnectRegistryProc,RecursiveDeleteKey,DeleteKey,
+	(GetKeyNames,GetType,GetValue,OpenSubKey,SetValue):
+	* win/tclWinSerial.c (SerialSetOptionProc): Update callers.
+
+	* Following is [Patch 505072]
+	* doc/Concat.3:
+	* doc/Encoding.3:
+	* doc/Filesystem.3:
+	* doc/Macintosh.3:
+	* doc/OpenFileChnl.3
+	* doc/SetResult.3:
+	* doc/SetVar.3:
+	* doc/SplitList.3:
+	* doc/SplitPath.3:
+	* doc/Translate.3:
+	* generic/tcl.h (Tcl_FSMatchInDirectoryProc):
+	* generic/tclInt.h (TclpMatchInDirectory):
+	* generic/tcl.decls (Tcl_Concat,Tcl_GetStringResult,Tcl_GetVar,
+	(Tcl_GetVar2,Tcl_JoinPath,Tcl_Merge,Tcl_OpenCommandChannel,Tcl_SetVar,
+	(Tcl_SetVar2,Tcl_SplitList,Tcl_SplitPath,Tcl_TranslateFileName,
+	(Tcl_ExternalToUtfDString,Tcl_GetEncodingName,Tcl_UtfToExternalDString,
+	(Tcl_GetDefaultEncodingDir,Tcl_SetDefaultEncodingDir,
+	(Tcl_FSMatchInDirectory,Tcl_MacEvalResource,Tcl_MacFindResource):
+	* generic/tclInt.decls (TclCreatePipeline,TclGetEnv,TclpGetCwd,
+	(TclpCreateProcess):
+	* mac/tclMacFile.c (TclpGetCwd):
+	* generic/tclEncoding.c (Tcl_GetDefaultEncodingDir,
+	(Tcl_SetDefaultEncodingDir,Tcl_GetEncodingName,
+	(Tcl_ExternalToUtfDString,Tcl_UtfToExternalDString, OpenEncodingFile,
+	(LoadEscapeEncoding):
+	* generic/tclFileName.c (DoTildeSubst,Tcl_JoinPath,Tcl_SplitPath,
+	(Tcl_TranslateFileName):
+	* generic/tclIOUtil.c (Tcl_FSMatchInDirectory):
+	* generic/tclPipe.c (FileForRedirect,TclCreatePipeline,
+	(Tcl_OpenCommandChannel):
+	* generic/tclResult.c (Tcl_GetStringResult):
+	* generic/tclUtil.c (Tcl_Concat,Tcl_SplitList,Tcl_Merge):
+	* generic/tclVar.c (Tcl_GetVar,Tcl_GetVar2,Tcl_SetVar,Tcl_SetVar2):
+	* mac/tclMacResource.c (Tcl_MacEvalResource,Tcl_MacFindResource):
+	Updated interfaces of generic/tclEncoding, generic/tclFilename.c,
+	generic/tclIOUtil.c, generic/tclPipe.c, generic/tclResult.c,
+	generic/tclUtil.c, generic/tclVar.c and mac/tclMacResource.c according
+	to TIP 27. Tcl_TranslateFileName rewritten as wrapper around VFS-aware
+	version.
+	***POTENTIAL INCOMPATIBILITY***
+	Includes source incompatibilities: argv arguments of Tcl_Concat,
+	Tcl_JoinPath, Tcl_OpenCommandChannel, Tcl_Merge; argvPtr arguments of
+	Tcl_SplitList and Tcl_SplitPath.
+	* generic/tclDecls.h:
+	* generic/tclIntDecls.h: make genstubs
+
+	* generic/tclCkalloc.c (MemoryCmd):
+	* generic/tclClock.c (FormatClock):
+	* generic/tclCmdAH.c (Tcl_CaseObjCmd,Tcl_EncodingObjCmd,Tcl_FileObjCmd):
+	* generic/tclCmdIL.c (InfoLibraryCmd,InfoPatchLevelCmd,
+	(InfoTclVersionCmd):
+	* generic/tclCompCmds.c (TclCompileForeachCmd):
+	* generic/tclCompCmds.h (TclCompileForeachCmd):
+	* generic/tclCompile.c (TclFindCompiledLocal):
+	* generic/tclEnv.c (TclSetupEnv,TclSetEnv,Tcl_PutEnv,TclGetEnv,
+	(EnvTraceProc):
+	* generic/tclEvent.c (Tcl_BackgroundError):
+	* generic/tclIO.c (Tcl_BadChannelOption,Tcl_SetChannelOption):
+	* generic/tclIOCmd.c (Tcl_ExecObjCmd,Tcl_OpenObjCmd):
+	* generic/tclIOSock.c (TclSockGetPort):
+	* generic/tclIOUtil.c (SetFsPathFromAny):
+	* generic/tclLink.c (LinkTraceProc):
+	* generic/tclMain.c (Tcl_Main):
+	* generic/tclNamesp.c (TclTeardownNamespace):
+	* generic/tclProc.c (TclCreateProc):
+	* generic/tclTest.c (TestregexpObjCmd,TesttranslatefilenameCmd,
+	(TestchmodCmd,GetTimesCmd,TestsetCmd,TestOpenFileChannelProc1,
+	(TestOpenFileChannelProc2,TestOpenFileChannelProc3,AsyncHandlerProc,
+	(TestpanicCmd):
+	* generic/tclThreadTest.c (ThreadErrorProc,ThreadEventProc):
+	* generic/tclUtil.c (TclPrecTraceProc):
+	* mac/tclMacFCmd.c (GetFileSpecs):
+	* mac/tclMacFile.c (TclpMatchInDirectory):
+	* mac/tclMacInit.c (TclpInitLibraryPath,Tcl_SourceRCFile):
+	* mac/tclMacOSA.c (tclOSAStore,tclOSALoad):
+	* mac/tclMacResource.c (Tcl_MacEvalResource):
+	* unix/tclUnixFCmd.c (TclpObjNormalizePath):
+	* unix/tclUnixFile.c (TclpMatchInDirectory,TclpGetUserHome,TclpGetCwd,
+	(TclpReadLink):
+	* unix/tclUnixInit.c (TclpInitLibraryPath,TclpSetVariables,
+	(Tcl_SourceRCFile):
+	* unix/tclUnixPipe.c (TclpOpenFile,TclpCreateTempFile,
+	(TclpCreateProcess):
+	* win/tclWinFile.c (TclpGetCwd,TclpMatchInDirectory):
+	* win/tclWinInit.c (TclpInitLibraryPath,Tcl_SourceRCFile,
+	(TclpSetVariables):
+	* win/tclWinPipe.c (TclpCreateProcess): Updated callers.
+
+2002-01-24  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tclIOUtil.c (SetFsPathFromAny):  Corrected tilde-substitution
+	of pathnames where > 1 separator follows the ~. [Bug 504950]
+
+2002-01-24  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/http/pkgIndex.tcl:
+	* library/http/http.tcl: don't add port in default case to handle
+	broken servers. http bumped to 2.4.1  [Bug 504508]
+
+2002-01-23  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* unix/mkLinks: Regenerated.
+	* doc/CrtChannel.3:
+	* doc/ChnlStack.3: Moved documentation for 'Tcl_GetTopChannel' from
+	'CrtChannel' to 'ChnlStack'. Added documentation of
+	'Tcl_GetStackedChannel'. [Bug 506147] reported by Mark Patton
+	<msp@users.sourceforge.net>.
+
+2002-01-23  Don Porter <dgp@users.sourceforge.net>
+
+	* win/tclWinFile.c (NativeAccess,NativeStat,NativeIsExec,
+	(TclpGetUserHome):
+	* win/tclWinPort.h (TclWinSerialReopen):
+	* win/tclWinSerial.c (TclWinSerialReopen):
+	* win/tclWinSock.c (Tcl_OpenTcpServer):  Corrections to earlier TIP 27
+	changes. Thanks to Andreas Kupries for the feedback.
+	* generic/tclPlatDecls.h: make genstubs
+
+	* doc/GetHostName.3:
+	* doc/GetOpnFl.3:
+	* doc/OpenTcp.3:
+	* tcl.decls (Tcl_GetHostName,Tcl_GetOpenFile,Tcl_OpenTcpClient,
+	(Tcl_OpenTclServer):
+	* mac/tclMacSock.c (CreateSocket,Tcl_OpenTcpClient,Tcl_OpenTcpServer,
+	(Tcl_GetHostName,GetHostFromString):
+	* unix/tclUnixChan.c (CreateSocket,CreateSocketAddress,
+	(Tcl_OpenTcpClient,Tcl_OpenTcpServer,Tcl_GetOpenFile):
+	* unix/tclUnixSock.c (Tcl_GetHostName):
+	* win/tclWinSock.c (CreateSocket,CreateSocketAddress,
+	(Tcl_OpenTcpClient,Tcl_OpenTcpServer,Tcl_GetHostName):
+	Updated socket interfaces according to TIP 27.
+	* generic/tclCmdIL.c (InfoHostnameCmd): Updated callers.
+	* generic/tclDecls.h: make genstubs
+
+2002-01-21  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclLoadNone.c: TclpLoadFile() didn't match proto of typedef
+	Tcl_FSLoadFileProc. OK'd by vincentdarley. [Patch 502488]
+
+2002-01-21  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* generic/tclIO.c (WriteChars): Fix for [Bug 506297], reported by
+	Martin Forssen <ruric@users.sourceforge.net>. The encoding chosen in
+	the script exposing the bug writes out three intro characters when
+	TCL_ENCODING_START is set, but does not consume any input as
+	TCL_ENCODING_END is cleared. As some output was generated the
+	enclosing loop calls UtfToExternal again, again with START set. Three
+	more characters in the out and still no use of input ... To break this
+	infinite loop we remove TCL_ENCODING_START from the set of flags after
+	the first call (no condition is required, the later calls remove an
+	unset flag, which is a no-op). This causes the subsequent calls to
+	UtfToExternal to consume and convert the actual input.
+
+2002-01-21  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tclTest.c: Converted declarations of TestReport file system
+	to more portable form. [Bug 501417]
+
+	* generic/tcl.decls (Tcl_TraceCommand,Tcl_UntraceCommand,
+	(Tcl_CommandTraceInfo):
+	* generic/tclCmdMZ.c (Tcl_TraceCommand,Tcl_UntraceCommand,
+	(Tcl_CommandTraceInfo): Updated APIs in generic/tclCmdMZ.c according
+	to the guidelines of TIP 27.
+	* generic/tclDecls.h: make genstubs
+
+2002-01-18  Don Porter <dgp@users.sourceforge.net>
+
+	* win/tclWinChan.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c: Overlooked callers of Tcl_FSGetNativePath
+
+	* win/tclWinDde.c:
+	* win/tclWinReg.c: Overlooked callers of Tcl_GetIndexFromObj
+
+2002-01-18  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclThreadTest.c:
+	* mac/tclMacChan.c:
+	* mac/tclMacFCmd.c:
+	* mac/tclMacFile.c:
+	* mac/tclMacLoad.c:
+	* mac/tclMacResource.c: TIP 27 CONSTification broke the mac build in a
+	number of places.
+
+2002-01-17  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* generic/tclIOCmd.c (Tcl_GetsObjCmd): Fixed [Bug 504642] as reported
+	by Brian Griffin <bgriffin@users.sourceforge.net>, using his
+	patch. Before the patch the generic I/O layer held an unannounced
+	reference to the interp result to store the read line into. This
+	unfortunately has disastrous results if the channel driver executes a
+	tcl script to perform its operation, this freeing the interp
+	result. In that case we are dereferencing essentially a dangling
+	reference. It is not truly dangling because the object is in the free
+	list, but this only causes us to smash the free list and have the
+	error occur later somewhere else. The patch simply creates a new
+	object for the line and later sets it into the interp result when we
+	are done with reading.
+
+2002-01-16  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/tcl.m4 (SC_LOAD_TCLCONFIG):
+	* win/tcl.m4 (SC_LOAD_TCLCONFIG): Subst TCL_DBGX into
+	TCL_STUB_LIB_FILE and TCL_STUB_LIB_FLAG variables so that an extension
+	does not need to subst TCL_DBGX into its makefile. [Tk Bug 504356]
+
+2002-01-16  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/FileSystem.3:
+	* doc/GetCwd.3:
+	* doc/GetIndex.3:
+	* generic/tcl.decls (Tcl_GetIndexFromObj, Tcl_GetIndexFromObjStruct,
+	(Tcl_GetCwd, Tcl_FSFileAttrStrings, Tcl_FSGetNativePath,
+	(Tcl_FSGetTranslatedStringPath):
+	* generic/tcl.h (Tcl_FSFileAttrStringsProc):
+	* generic/tclFCmd.c (TclFileAttrsCmd):
+	* generic/tclIOUtil.c (Tcl_GetCwd,NativeFileAttrStrings,
+	(Tcl_FSFileAttrStrings,Tcl_FSGetTranslatedStringPath,
+	(Tcl_FSGetNativePath):
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObj,
+	(Tcl_GetIndexFromObjStruct):
+	More TIP 27 updates in tclIOUtil.c and tclIndexObj.c that were
+	overlooked before. [Patch 504671]
+	***POTENTIAL INCOMPATIBILITY***
+	Includes a source incompatibility in the tablePtr arguments of the
+	Tcl_GetIndexFromObj* routines.
+	* generic/tclDecls.h: make genstubs
+
+	* generic/tclBinary.c (Tcl_BinaryObjCmd):
+	* generic/tclClock.c (Tcl_ClockObjCmd):
+	* generic/tclCmdAH.c (Tcl_EncodingObjCmd, Tcl_FileObjCmd):
+	* generic/tclCmdIL.c (Tcl_InfoObjCmd,Tcl_LsearchObjCmd,Tcl_LsortObjCmd):
+	* generic/tclCmdMZ.c (Tcl_TraceObjCmd,Tcl_RegexpObjCmd,Tcl_RegsubObjCmd,
+	(Tcl_StringObjCmd,Tcl_SubstObjCmd,Tcl_SwitchObjCmd,
+	(TclTraceCommandObjCmd,TclTraceVariableObjCmd):
+	* generic/tclCompCmds.c (TclCompileStringCmd):
+	* generic/tclEvent.c (Tcl_UpdateObjCmd):
+	* generic/tclFileName.c (Tcl_GlobObjCmd):
+	* generic/tclIO.c (Tcl_FileEventObjCmd):
+	* generic/tclIOCmd.c (Tcl_SeekObjCmd,Tcl_ExecObjCmd,Tcl_SocketObjCmd,
+	(Tcl_FcopyObjCmd):
+	* generic/tclInterp.c (Tcl_InterpObjCmd,SlaveObjCmd):
+	* generic/tclNamesp.c (Tcl_NamespaceObjCmd):
+	* generic/tclPkg.c (Tcl_PackageObjCmd):
+	* generic/tclTest.c (Tcltest_Init,TestencodingObjCmd,TestgetplatformCmd,
+	(TestlocaleCmd,TestregexpObjCmd,TestsaveresultCmd,
+	(TestGetIndexFromObjStructObjCmd,TestReportFileAttrStrings):
+	* generic/tclTestObj.c (TestindexObjCmd,TeststringObjCmd):
+	* generic/tclTimer.c (Tcl_AfterObjCmd):
+	* generic/tclVar.c (Tcl_ArrayObjCmd):
+	* mac/tclMacFCmd.c (SetFileFinderAttributes):
+	* unix/tclUnixChan.c (TclpOpenFileChannel):
+	* unix/tclUnixFCmd.c (tclpFileAttrStrings):
+	* unix/tclUnixFile.c (TclpObjAccess,TclpObjChdir,TclpObjStat,
+	(TclpObjLstat):
+	* win/tclWinFCmd.c (tclpFileAttrStrings): Updated callers.
+
+	* doc/RegExp.3:
+	* doc/Utf.3:
+	* generic/tcl.decls:
+	* generic/tclInt.decls:
+	* generic/tclRegexp.c:
+	* generic/tclUtf.c:  Updated APIs in generic/tclUtf.c and
+	generic/tclRegexp.c according to the guidelines of TIP 27.
+	[Patch 471509]
+
+	* generic/regc_locale.c (element,cclass):
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
+	* generic/tclFileName.c (TclpGetNativePathType,SplitMacPath):
+	* generic/tclIO.c (ReadChars):
+	* mac/tclMacLoad.c (TclpLoadFile):
+	* win/tclWinFile.c (TclpGetUserHome): Updated callers.
+
+	* generic/tclDecls.h:
+	* generic/tclIntDecls.h: make genstubs
+
+	* doc/ParseCmd.3 (Tcl_ParseVar):
+	* generic/tcl.decls (Tcl_ParseVar):
+	* generic/tclParse.c (Tcl_ParseVar):
+	* generic/tclTest.c (TestparsevarObjCmd): Updated APIs in
+	generic/tclParse.c according to the guidelines of TIP 27. Updated
+	callers. [Patch 501046]
+	* generic/tclDecls.h: make genstubs
+
+	* generic/tcl.decls (Tcl_RecordAndEval):
+	* generic/tclDecls.h: make genstubs
+	* generic/tclHistory.c (Tcl_RecordAndEval): Updated APIs in
+	generic/tclHistory.c according to the guidelines of TIP 27.
+	[Patch 504091]
+
+	* doc/CrtSlave.3:
+	* generic/tcl.decls (Tcl_CreateAlias, Tcl_CreateAliasObj,
+	(Tcl_CreateSlave, Tcl_GetAlias, Tcl_GetAliasObj, Tcl_GetSlave):
+	* generic/tclInterp.c (Tcl_CreateAlias, Tcl_CreateAliasObj,
+	(Tcl_CreateSlave, Tcl_GetAlias, Tcl_GetAliasObj, Tcl_GetSlave):
+	Updated APIs in the file generic/tclInterp.c according to the
+	guidelines of TIP 27. [Patch 501371]
+	***POTENTIAL INCOMPATIBILITY***
+	Includes a source incompatibility in the targetCmdPtr arguments of the
+	Tcl_GetAlias* routines.
+
+	* generic/tclDecls.h: make genstubs
+
+2002-01-15  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/SetErrno.3 (Tcl_ErrnoMsg): Corrected documentation for
+	Tcl_ErrnoMsg; it takes an integer argument. Thanks to Georgios
+	Petasis. [Bug 468183]
+
+	* doc/AddErrInfo.3 (Tcl_PosixError):
+	* doc/Eval.3 (Tcl_EvalFile):
+	* doc/FileSystem.c (Tcl_FSOpenFileChannel,Tcl_FSOpenFileChannelProc):
+	* doc/OpenFileChnl.3 (Tcl_OpenFileChannel):
+	* doc/SetErrno.3 (Tcl_ErrnoId,Tcl_ErrnoMsg):
+	* doc/Signal.3 (Tcl_SignalId,Tcl_SignalMsg):
+	* generic/tcl.decls (Tcl_ErrnoId,TclErrnoMsg,Tcl_EvalFile,
+	(Tcl_OpenFileChannel,Tcl_PosixError,Tcl_SignalId,Tcl_SignalMsg,
+	(Tcl_FSOpenFileChannel):
+	* generic/tcl.h (Tcl_FSOpenFileChannelProc):
+	* generic/tclIO.c (FlushChannel):
+	* generic/tclIOUtil.c (Tcl_OpenFileChannel,Tcl_EvalFile,TclGetOpenMode,
+	(Tcl_PosixError,Tcl_FSOpenFileChannel):
+	* generic/tclInt.decls (TclGetOpenMode):
+	* generic/tclInt.h (TclOpenFileChannelProc_,TclGetOpenMode,
+	(TclpOpenFileChannel):
+	* generic/tclPipe.c (TclCleanupChildren):
+	* generic/tclPosixStr.c (Tcl_ErrnoId,Tcl_ErrnoMsg,Tcl_SignalId,
+	(Tcl_SignalMsg):
+	* generic.tclTest.c (PretendTclpOpenFileChannel,
+	(TestOpenFileChannelProc1,TestOpenFileChannelProc2,
+	(TestOpenFileChannelProc3,TestReportOpenFileChannel):
+	* mac/tclMacChan.c (TclpOpenFileChannel):
+	* unix/tclUnixChan.c (TclpOpenFileChannel):
+	* win/tclWinChan.c (TclpOpenFileChannel): Updated APIs in
+	generic/tclIOUtil.c and generic/tclPosixStr.c according to the
+	guidelines of TIP 27. Updated callers. [Patch 499196]
+
+	* generic/tclDecls.h:
+	* generic/tclIntDecls.h: make genstubs
+
+	* doc/CrtChannel.3:
+	* doc/OpenFileChnl.3:
+	* generic/tcl.decls:
+	* generic/tclIO.h:
+	* generic/tclIO.c (DoWrite, Tcl_RegisterChannel, Tcl_GetChannel,
+	(Tcl_CreateChannel, Tcl_GetChannelName, CloseChannel, Tcl_Write,
+	(Tcl_WriteRaw, Tcl_Ungets, Tcl_BadChannelOption, Tcl_GetChannelOption,
+	(Tcl_SetChannelOption, Tcl_GetChannelNamesEx, Tcl_ChannelName):
+	Updated APIs in the file generic/tclIO.c according to the guidelines
+	of TIP 27. Several minor documentation corrections as well.
+	[Patch 503565]
+	* generic/tclDecls.h: make genstubs
+
+	* generic/tcl.h (Tcl_DriverOutputProc, Tcl_DriverGetOptionProc,
+	(Tcl_DriverSetOptionProc):
+	* generic/tclIOGT.c (TransformOutputProc, TransformGetOptionProc,
+	(TransformSetOptionProc):
+	* mac/tclMacChan.c (FileOutput, StdIOOutput):
+	* man/tclMacSock.c (TcpGetOptionProc, TcpOutput):
+	* unix/tclUnixChan.c (FileOutputProc, TcpGetOptionProc, TcpOutputProc,
+	(TtyGetOptionProc, TtySetOptionProc):
+	* unix/tclUnixPipe.c (PipeOuputProc):
+	* win/tclWinChan.c (FileOutputProc):
+	* win/tclWinConsole.c (ConsleOutputProc):
+	* win/tclWinPipe.c (PipeOuputProc):
+	* win/tclWinSerial.c (SerialOutputProc, SerialGetOptionProc,
+	(SerialSetOptionProc):
+	* win/tclWinSock.c (TcpGetOptionProc, TcpOutput): Updated channel
+	driver interface according to the guidelines of TIP 27. See also
+	[Bug 500348].
+
+	* doc/CrtChannel.3:
+	* generic/tcl.h:
+	* generic/tclIO.c:
+	* generic/tclIO.h:
+	* generic/tclInt.h:
+	* tools/checkLibraryDoc.tcl:
+	Moved Tcl_EolTranslation enum declaration from generic/tcl.h to
+	generic/tclInt.h (renamed to TclEolTranslation). It is not used
+	anywhere in Tcl's public interface.
+
+2002-01-14  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/GetIndex.3:
+	* doc/WrongNumArgs.3:
+	* generic/tcl.decls (Tcl_GetIndexFromObj, Tcl_GetIndexFromObjStruct,
+	(Tcl_WrongNumArgs):
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObj,Tcl_GetIndexFromObjStruct,
+	(Tcl_WrongNumArgs): Updated APIs in the file generic/tclIndexObj.c
+	according to the guidelines of TIP 27. [Patch 501491]
+	* generic/tclDecls.h: make genstubs
+
+2002-01-11  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/configure.in:
+	* win/configure: Regen.
+	* win/configure.in: Use ${libdir} instead of ${exec_prefix}/lib
+	to properly support the --libdir option to configure. [Bug 489370]
+
+2002-01-11  Andreas Kupries  <andreas_kupries@users.sourceforge.net>
+
+	* win/tclWinSerial.c (SerialSetOptionProc): Applied patch for [Bug
+	500348] supplied by Rolf Schroedter <schroedter@users.sf.net>. The
+	function modified the contents of the the 'value' string and now does
+	not do this anymore. This is a followup to the change made on
+	2001-12-17.
+
+2002-01-11  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: Removed -GD compiler option. It was intended for
+	future use, but MS is again changing the future at their whim. The
+	D4002 warning was harmless though, but someone using VC .NET logged it
+	as a concern. [Bug 501565]
+
+2002-01-11  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in: Burn Tcl build directory into tcltest executable
+	to avoid crashes caused by ld loading a previously installed version
+	of the tcl shared library. [Bug 218110]
+
+2002-01-10  Don Porter <dgp@users.sourceforge.net>,
+	Kevin Kenny <kennykb@users.sourceforge.net>
+
+	* unix/tclLoadDld.c (TclpLoadFile):  syntax error: unbalanced parens.
+	Kevin notes that it's far from clear that this file is ever included
+	in an actual build; Linux without dlopen appears to be a nonexistent
+	configuration.
+
+2002-01-08  Don Porter <dgp@users.sourceforge.net>,
+	Kevin Kenny <kennykb@users.sourceforge.net>
+
+	* doc/StaticPkg.3 (Tcl_StaticPackage):
+	* generic/tcl.decls (Tcl_StaticPackage):
+	* generic/tclDecls.h (Tcl_StaticPackage):
+	* generic/tclInt.decls (TclGuessPackageName):
+	* generic/tclInt.h (TclGuessPackageName):
+	* generic/tclLoad.c (Tcl_StaticPackage):
+	* generic/tclLoadNone.c (TclGuessPackageName):
+	* mac/tclMacLoad.c (TclGuessPackageName):
+	* unix/tclLoadAout.c (TclGuessPackageName):
+	* unix/tclLoadDl.c (TclGuessPackageName):
+	* unix/tclLoadDld.c (TclGuessPackageName):
+	* unix/tclLoadDyld.c (TclGuessPackageName):
+	* unix/tclLoadNext.c (TclGuessPackageName):
+	* unix/tclLoadOSF.c (TclGuessPackageName):
+	* unix/tclLoadShl.c (TclGuessPackageName):
+	* win/tclWinLoad.c (TclGuessPackageName):  Updated APIs in the files
+	*/tcl*Load*.c according to the guidelines of TIP 27. [Patch 501096]
+
+2002-01-09  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tclTest.c (MainLoop):
+	* tests/main.test (Tcl_Main-1.{3,4,5,6}):  Corrected some non-portable
+	tests from the new Tcl_Main changes. Thanks to Kevin Kenny.
+
+2002-01-07  Don Porter <dgp@users.sourceforge.net>
+
+	* generic/tclEvent.c (TclInExit):
+	* generic/tclIOUtil.c (SetFsPathFromAbsoluteNormalized,
+	(SetFsPathFromAny,Tcl_FSNewNativePath,DupFsPathInternalRep):
+	* generic/tclListObj.c (TclLsetList,TclLsetFlat):  Added some type
+	casts to satisfy picky compilers.
+
+	* generic/tclMain.c:  Bug fix: neglected the NULL case in
+	TclGetStartupScriptFileName(). Broke Tk/wish.
+
+2002-01-05  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/Tcl_Main.3:
+	* generic/tclMain.c:  Substantial rewrite and expanded documentation
+	of Tcl_Main to correct a number of bugs and flaws:
+
+	  - Interactive Tcl_Main can now enter a main loop, exit that loop and
+	    continue interactive operations. The loop may even exit in the
+	    midst of interactive command typing without loss of the partial
+	    command. [Bugs 486453, 474131]
+	  - Tcl_Main now gracefully handles deletion of its master
+	    interpreter.
+	  - Interactive Tcl_Main can now operate with non-blocking stdin
+	  - Interactive Tcl_Main can now detect EOF on stdin even in
+	    mid-command. [Bug 491341]
+	  - Added VFS-aware internal routines for managing the startup script
+	    selection.
+	  - Tcl variable 'tcl_interactive' is now linked to C variable 'tty'
+	    so that one can disable/enable interactive prompts at the script
+	    level when there is no startup script. This is meant for use by
+	    the test suite.
+	  - Consistent use of the Tcl libraries standard channels as returned
+	    by Tcl_GetStdChannel(); as opposed to the channels named 'stdin',
+	    'stdout', and 'stderr' in the master interp, which can be
+	    different or unavailable.
+	  - Tcl_Main now calls Tcl_Exit() if evaluation of [exit] in the
+	    master interpreter returns, assuring Tcl_Main does not return.
+	  - Documented Tcl_Main's absence from public stub table
+	  - Documented that Tcl_Main does not return.
+	  - Documented Tcl variables set by Tcl_Main.
+	  - All prompts are done from a single procedure, Prompt.
+	  - Use of Tcl_Obj-enabled interfaces everywhere.
+
+	* generic/tclInt.decls (TclGetStartupScriptPath,
+	(TclSetStartupScriptPath): New internal VFS-aware routines for
+	managing the startup script of Tcl_Main.
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c: make genstubs
+
+	* generic/tclTest.c (TestsetmainloopCmd,TestexitmainloopCmd,
+	(Tcltest_Init,TestinterpdeleteCmd):
+	* tests/main.test (new):  Added new file to test suite that thoroughly
+	tests generic/tclMain.c; added some new test commands for testing
+	Tcl_SetMainLoop().
+
+2002-01-04  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/Alloc.3:
+	* doc/Concat.3:
+	* doc/CrtMathFnc.3:
+	* doc/Hash.3:
+	* doc/Interp.3:
+	* doc/LinkVar.3:
+	* doc/ObjectType.3:
+	* doc/PkgRequire.3:
+	* doc/Preserve.3:
+	* doc/SetResult.3:
+	* doc/SplitList.3:
+	* doc/SplitPath.3:
+	* doc/TCL_MEM_DEBUG.3: Updated documentation to describe the ckalloc,
+	ckfree, ckrealloc, attemptckalloc, and attemptckrealloc macros, and
+	to accurately describe when and how they are used. [Bug 497459]
+
+	* generic/tclThreadJoin.c (TclRememberJoinableThread,TclJoinThread):
+	Replaced Tcl_Alloc and Tcl_Free calls with ckalloc and ckfree so that
+	memory debugging is supported.
+
+2002-01-04  Daniel Steffen <das@users.sourceforge.net>
+
+	* mac/tclMacTime.c (TclpGetTZName): fix for daylight savings TZName bug
+
+2002-01-03  Don Porter <dgp@users.sourceforge.net>
+
+	* doc/FileSystem.3:
+	* generic/tclIOUtil.c: Updated some old uses of "fileName" to
+	new VFS terminology, "pathPtr".
+
+2002-01-03  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/basic.test (basic-39.4): Greatly simplified test while
+	still leaving it so that it crashes when run without the fix to
+	the [foreach] implementation.
+	* generic/tclCmdAH.c (Tcl_ForeachObjCmd): Stopped [Bug 494348] from
+	happening by not trying to be so clever with cacheing; if nothing
+	untoward is happening anyway, the less efficient technique will
+	only add a few instruction cycles (one function call and a few
+	derefs/assigns per list per iteration, with no change in the
+	number of tests) and if something odd *is* going on, the code is
+	now far more robust.
+
+	* tests/basic.test (basic-39.4): Reproducable script from [Bug 494348]
+
+2002-01-02  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/util.test (Wrapper_Tcl_StringMatch,util-5.*): Rewrote so the
+	test is performed with the right internal function since [string
+	match] no longer uses Tcl_StringCaseMatch internally.
+
+	* tests/string.test (string-11.51):
+	* generic/tclUtf.c (Tcl_UniCharCaseMatch):
+	* generic/tclUtil.c (Tcl_StringCaseMatch): Fault with matching
+	case-insensitive non-ASCII patterns containing upper case characters.
+	[Bug 233257]
+
+	******************************************************************
+	*** CHANGELOG ENTRIES FOR 2001 IN "ChangeLog.2001"             ***
+	*** CHANGELOG ENTRIES FOR 2000 IN "ChangeLog.2000"             ***
+	*** CHANGELOG ENTRIES FOR 1999 AND EARLIER IN "ChangeLog.1999" ***
+	******************************************************************
diff --git a/ChangeLog.2003 b/ChangeLog.2003
new file mode 100644
index 0000000..c586ba9
--- /dev/null
+++ b/ChangeLog.2003
@@ -0,0 +1,3349 @@
+2003-12-25  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWin32Dll.c (DllMain): Add HAVE_NO_SEH blocks in place of
+	__try and __except statements to support gcc builds. This is needed
+	after David's changes on 2003-12-21. [Patch 858493]
+
+2003-12-23  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclAlloc.c:	All uses of 'panic' (the macro) changed to
+	* generic/tclBasic.c:	'Tcl_Panic' (the function). The #define of
+	* generic/tclBinary.c:	panic in tcl.h clearly states it is deprecated
+	* generic/tclCkalloc.c:	in the comments. [Patch 865264]
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclCompCmds.c:
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
+	* generic/tclConfig.c:
+	* generic/tclDictObj.c:
+	* generic/tclEncoding.c:
+	* generic/tclEvent.c:
+	* generic/tclExecute.c:
+	* generic/tclHash.c:
+	* generic/tclInterp.c:
+	* generic/tclIO.c:
+	* generic/tclIOCmd.c:
+	* generic/tclIOUtil.c:
+	* generic/tclListObj.c:
+	* generic/tclLiteral.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclParse.c:
+	* generic/tclPathObj.c:
+	* generic/tclPkg.c:
+	* generic/tclPreserve.c:
+	* generic/tclProc.c:
+	* generic/tclStringObj.c:
+	* generic/tclTest.c:
+	* generic/tclThreadAlloc.c:
+	* generic/tclTimer.c:
+	* generic/tclTrace.c:
+	* generic/tclVar.c:
+	* mac/tclMacChan.c:
+	* mac/tclMacOSA.c:
+	* mac/tclMacResource.c:
+	* mac/tclMacSock.c
+	* mac/tclMacThrd.c:
+	* unix/tclUnixChan.c:
+	* unix/tclUnixNotfy.c:
+	* unix/tclUnixThrd.c:
+	* unix/tclXtNotify.c:
+	* win/tclWin32Dll.c:
+	* win/tclWinChan.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinNotify.c:
+	* win/tclWinPipe.c:
+	* win/tclWinSock.c:
+	* win/tclWinThrd.c:
+
+	* generic/tclInt.h:  Deprecated use of Tcl_Ckalloc changed to
+	Tcl_Alloc in the TclAllocObjStorage macro.
+
+2003-12-22  David Gravereaux <davygrvy@pobox.com>
+
+	* win/nmakehlp.c:
+	* win/rules.vc:  New feature for extensions that use rules.vc. Now
+	reads header files for version strings. No more hard coding
+	TCL_VERSION = 8.5 and having to edit it when you swap cores.
+
+	* win/makefile.vc: VERSION macro now set by reading tcl.h for it.
+
+	* generic/tcl.h: Removed note that makefile.vc needs to have a version
+	number changed.
+
+2003-12-21  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWin32Dll.c: Structured Exception Handling added around
+	Tcl_Finalize called from DllMain's DLL_PROCESS_DETACH. We can't be
+	100% assured that Tcl is being unloaded by the OS in a stable
+	condition and we need to protect the exit handlers should the stack be
+	in a hosed state. AT&T style assembly for SEH under MinGW has not been
+	added yet. This is a first part change for [Patch 858493]
+
+2003-12-17  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclBinary.c (DeleteScanNumberCache): fixed crashing bug when
+	numeric scan-value cache contains NULL value.
+
+2003-12-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclCmdAH.c:
+	* unix/tclUnixFile.c:
+	* win/tclWinFCmd.c:
+	* tests/fCmd.test:
+	* tests/fileSystem.test:
+	* doc/file.n: final fix to support for relative links and its
+	implications on normalization and other parts of the filesystem code.
+	Fixes [Bug 859251] and some Windows problems with recursive file
+	delete/copy and symbolic links.
+
+2003-12-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c:
+	* tests/fileSystem.test: fix and tests for [Bug 860402] in new file
+	normalization code.
+
+2003-12-17  Zoran Vasiljevic  <zv@archiware.com>
+
+	* generic/tclIOUtil.c: fixed 2 memory (object) leaks. [Bug 839519]
+
+	* generic/tclPathObj.c: fixed Tcl_FSGetTranslatedPath to always return
+	properly refcounted path object. [Bug 861515]
+
+2003-12-16  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fCmd.test: marking fCmd-9.14.2, as nonPortable, since on
+	Solaris one can change the name of the current directory with 'file
+	rename'.
+	* doc/FileSystem.3: clarified documentation on ownership of return
+	objects/strings of some Tcl_FS* calls.
+
+2003-12-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclThreadAlloc.c (binfo): Made variable file-local.
+
+2003-12-15  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tcl.rc:
+	* win/tclsh.rc: Slight modification to the STRINGIFY macro to support
+	Borland's rc tool.
+
+	* win/tclWinFile.c (TclpUtime) : utimbuf struct not a problem with
+	Borland.
+
+	* win/tclWinTime.c (TclpGetDate) : Borland's localtime() has a slight
+	behavioral difference.
+
+	From Helmut Giese <hgiese@ratiosoft.com> [Patch 758097].
+
+2003-12-14  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclInt.decls: commented-out entry for TclpCheckStackSpace,
+	removing it from the Stubs table. It's already declared in tclInt.h
+	and labeled as a function that is not to be exported. Regened tables.
+
+2003-12-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): TIP#75 Implementation
+	* tests/switch.test:	Can now get submatch information when using
+	* doc/switch.n:		-regexp matching in [switch].
+
+2003-12-14  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: complete rewrite of generic file normalization
+	code to cope with links followed by '..'. [Bug 849514], and parts of
+	[Bug 859251]
+
+2003-12-12  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinChan.c: Win32's SetFilePointer() takes LONGs not DWORDs (a
+	signed/unsigned mismatch). Redid local vars to avoid all casting
+	except where truly required.
+
+2003-12-12  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclCmdAH.c: fix to normalization of non-existent user name
+	('file normalize ~nobody') [Bug 858937]
+	* doc/file.n: clarify behaviour of 'file link' when the target is not
+	an absolute path.
+	* doc/filename.n: correct documentation to say that Windows Tcl does
+	handle '~user', for recent Windows releases, and clarified distinction
+	between MacOS 'classic' and MacOS X.
+	* doc/glob.n: clarification of glob's behaviour when returning
+	filenames starting with a '~'.
+
+	* tests/fileSystem.test:
+	* tests/fileName.test: new tests added for the normalization problem
+	above and other recentlt reported issues.
+
+	* win/tclWinFile.c: corrected unclear comments
+
+	* unix/tclUnixFile.c: allow creation of relative links. [Bug 833713]
+
+2003-12-11  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinSock.c (SocketThreadExitHandler) : added a TerminateThread
+	fallback just in case the socket handler thread is really in a paused
+	state. This can happen when Tcl is being unloaded by the OS from an
+	exception handler. See MSDN docs on DllMain, it states this behavior.
+
+2003-12-09  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure:
+	* unix/tcl.m4: updated OpenBSD build configuration based on
+	[Patch #775246] (cassoff)
+
+2003-12-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tclUnixPort.h:	#ifdef'd out declarations of errno which are
+	* tools/man2tcl.c:	known to cause problems with recent glibc.
+				[Bug 852369]
+
+2003-12-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWinFile.c: fix to NT file permissions code [Bug 855923]
+	* tests/winFile.test: added tests for NT file permissions - patch and
+	test scripts supplied by Benny.
+
+	* tests/winFCmd.test: fixed one test for when not running in C:/
+
+2003-12-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclBinary.c (DeleteScanNumberCache, ScanNumber): Made the
+	numeric scan-value cache have proper references to the objects within
+	it so strange patterns of writes won't cause references to freed
+	objects. Thanks to Paul Obermeir for the report. [Bug 851747]
+
+2003-12-01  Miguel Sofer <msofer@users.sf.net>
+
+	* doc/lset.n: fix typo [Bug 852224]
+
+2003-11-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclParse.c:	Corrected faulty check for trailing white
+	space in {expand} parsing. Thanks Andreas Leitgeb. [Bug 848262]
+	* tests/parse.test: 	New tests for the bug.
+
+2003-11-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: fix to [Bug 845778] - Infinite recursion on
+	[cd] (Windows only bug), for which new tests have just been added.
+
+2003-11-21  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/winFCmd.test (winFCmd-16.10,11): Merged new tests from
+	core-8-4-branch.
+
+2003-11-20  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c: fix flag bit collision between LOOKUP_FOR_UPVAR
+	and TCL_PARSE_PART1 (deprecated) [Bug 835020]
+
+2003-11-19  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/compile.test (compile-16.22.0):	Improved test for the recent
+	fix for Bug 845412.
+
+2003-11-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCompile.c (TclCompileScript): Added a guard for the
+	expansion code so that long non-expanding commands don't get expansion
+	infrastructure inserted in them, especially when that infrastructure
+	isn't initialised. [Bug 845412]
+
+2003-11-18  David Gravereaux <davygrvy@pobox.com>
+
+	* contrib/djgpp/Makefile:		Changes from Victor Wagner
+	* contrib/djgpp/langinfo.c (new):	<vitus@45.free.net> for better
+	* contrib/djgpp/langinfo.h (new):	DJGPP support.
+	* unix/tclUnixInit.c:			.
+	* unix/tclUnixChan.c:			.
+	* unix/tclUnixFCmd.c:			.
+
+2003-11-17  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/reg.test: Added tests for [Bugs 230589, 504785, 505048, 840258]
+	recently fixed by 2003-11-15 commit to regcomp.c by Pavel Goran. His
+	notes on the fix: This bug results from an error in code that splits
+	states into "progress" and "no-progress" ones. This error causes an
+	interesting situation with the pre-collected single-linked list of
+	states to be splitted: many items were added to the list, but only
+	several of them are accessible from the list beginning, since the
+	"tmp" member of struct state (which is used here to hold a pointer to
+	the next list item) gets overwritten, which results in a "looped"
+	chain. As a result, not all of states are splitted, and one state is
+	splitted two times, causing incorrect "no-progress" flag values.
+
+2003-11-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclExecute.c (TclExecuteByteCode): Make sure that
+	Tcl_AsyncInvoke is called regularly when processing bytecodes.
+	* generic/tclTest.c (AsyncThreadProc, TestasyncCmd): Extended testing
+	harness to send an asynchronous marking without relying on UNIX
+	signals.
+	* tests/async.test (async-4.*): Tests to check that async events are
+	handled by the bytecode core. [Bug 746722]
+
+2003-11-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclTest.c (TestHashSystemHashCmd): Removed 'const' modifier
+	from hash type structure; it should be const and the hash code assumes
+	it behaves like const, but that's not how the API is defined. Like
+	this, we are following in the same footsteps as Tcl_RegisterObjType()
+	which has the same conditions on its argument. Stops VC++5.2 warning.
+	[Bug 842511]
+
+2003-11-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclHash.c (Tcl_DeleteHashTable,Tcl_HashStats,RebuildTable):
+	* generic/tclTest.c (TestHashSystemHashCmd): TIP#138 implementation,
+	* tests/misc.test:	plus a new chunk of stuff to test the hash
+				functions more thoroughly in the test suite.
+				[Patch 731356, modified]
+
+	* doc/Tcl.n: Updated Tcl version number and changebars.
+
+2003-11-14  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/ParseCmd.3:	Implementation of TIP 157.  Adds recognition
+	* doc/Tcl.n:		of the new leading {expand} syntax on words.
+	* generic/tcl.h:	Parses such words as the new Tcl_Token type
+	* generic/tclBasic.c:	TCL_TOKEN_EXPAND_WORD. Updated Tcl_EvalEx and
+	* generic/tclCompile.c: the bytecode compiler/execution engine to
+	* generic/tclCompile.h:	recognize the new token type. New opcodes
+	* generic/tclExecute.c:	INST_LIST_VERIFY and INST_INVOKE_EXP and a new
+	* generic/tclParse.c:	operand type OPERAND_ULIST1 are defined. Docs
+	* generic/tclTest.c:	and tests are included.
+	* tests/basic.test:
+	* tests/compile.test:
+	* tests/parse.test:
+
+	* library/auto.tcl:	Replaced several [eval]s used to perform
+	* library/package.tcl:	argument expansion with the new syntax. In the
+	* library/safe.tcl:	test files lindex.test and lset.test, replaced
+	* tests/cmdInfo.test:	use of [eval] to force direct string
+	* tests/encoding.test:	evaluation with use of [testevalex] which more
+	* tests/execute.test:	directly and robustly serves the same purpose.
+	* tests/fCmd.test:
+	* tests/http.test:
+	* tests/init.test:
+	* tests/interp.test:
+	* tests/io.test:
+	* tests/ioUtil.test:
+	* tests/iogt.test:
+	* tests/lindex.test:
+	* tests/lset.test:
+	* tests/namespace-old.test:
+	* tests/namespace.test:
+	* tests/pkg.test:
+	* tests/pkgMkIndex.test:
+	* tests/proc.test:
+	* tests/reg.test:
+	* tests/trace.test:
+	* tests/upvar.test:
+	* tests/winConsole.test:
+	* tests/winFCmd.test:
+
+2003-11-12  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* tests/cmdMZ.test (cmdMZ-1.4): change to nonPortable as more systems
+	are using permissions caching, and this isn't really a Tcl controlled
+	issue.
+
+2003-11-11  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure:
+	* unix/tcl.m4: improve AIX --enable-64bit handling
+	remove -D__NO_STRING_INLINES -D__NO_MATH_INLINES from CFLAGS_OPTIMIZE
+	on Linux. Make default opt -O2 (was -O).
+
+2003-11-11  David Gravereaux <davygrvy@pobox.com>
+
+	* contrib/djgpp/Makefile:  Suggested changes from vitus@45.free.net
+	(Victor Wagner)
+
+	* unix/tclUnixPort.h:  added socklen_t typedef for DJGPP
+
+2003-11-10  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tclUnixInit.c (TclpInitLibraryPath):
+	* win/tclWinInit.c (TclpInitLibraryPath):	Fix for [Bug 832657]
+	that should not run afoul of startup constraints.
+
+	* library/dde/pkgIndex.tcl:	Added safeguards so that registry and
+	* library/reg/pkgIndex.tcl:	dde packages are not offered on
+	* win/tclWinDde.c:		non-Windows platforms. Bumped to
+	* win/tclWinReg.c:		registry 1.1.3 and dde 1.3.
+	* win/Makefile.in:
+	* win/configure.in:
+	* win/makefile.bc:
+	* win/makefile.vc:
+
+	* win/configure:	autoconf (2.57)
+
+2003-11-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/cmdIL.test: Stopped cmdIL-5.5 from stomping over the test
+	command, and updated the tests to use some tcltest2 features in
+	relation to cleanup. [Bug 838384]
+
+2003-11-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclCmdAH.c:
+	* tests/fCmd.test: fix to misleading error message in 'file link'.
+	[Bug 836208]
+
+2003-11-07  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to compiler warning/error with some
+	compilers. [Bug 835918]
+
+2003-11-07  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: optimized builds define NDEBUG to turn off
+	ThreadAlloc range checking.
+
+2003-11-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/unixInit.test (unixInit-2.10):  New test to expose [Bug 832657]
+	failure of TclpInitLibraryPath() to properly handle .. in the path
+	of the executable.
+
+2003-11-04  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: added 'test' target.
+
+2003-11-03  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c
+	* generic/tclInt.h: added comments and re-arranged code to clarify
+	distinction between Tcl_LoadHandle, ClientData for 'load'ed code, and
+	point out limitations of the design introduced with Tcl 8.4.
+
+	* unix/tclUnixFile.c: fix to memory leak
+
+	* generic/tclCmdIL.c: removed warning on Windows.
+
+2003-11-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdIL.c (Tcl_LrepeatObjCmd): Check for sensible list
+	lengths and allow for soft failure of the memory subsystem in the
+	[lconcat] command [Bug 829027]. Uses direct list creation to avoid
+	extra copies when working near the limit of available memory. Also
+	reorganized to encourage optimizing compilers to optimize heavily.
+	* generic/tclListObj.c (TclNewListObjDirect): New list constructor
+	that does not copy the array of objects. Useful for creating
+	potentially very large lists or where you are about to throw away the
+	array argument which is being used in its entirety.
+
+2003-10-28  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (NEXT_INST macros): replaced macro variable
+	"result" by "resultHandling" to avoid confusion.
+
+2003-10-23  Andreas Kupries  <andreask@activestate.com>
+
+	* unix/tclUnixChan.c (Tcl_MakeFileChannel): Applied [Patch 813606]
+	fixing [Bug 813087]. Detection of sockets was off for Mac OS X which
+	implements pipes as local sockets. The new code ensures that only IP
+	sockets are detected as such.
+
+	* win/tclWinSock.c (TcpWatchProc): Watch for FD_CLOSE too when asked
+	for writable events by the generic layer.
+	(SocketEventProc): Generate a writable event too when a close is
+	detected.
+
+	  Together the changes fix [Bug 599468].
+
+2003-10-23  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/resource.test:
+	* mac/tclMacResource.c: fix to resource freeing problem in 'resource'
+	command reported by Bernard Desgraupes.
+
+	* doc/FileSystem.3: updated documentation for 'glob' fix on 2003-10-13
+	below
+
+2003-10-22  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdAH.c (Tcl_FileObjCmd): Changed FILE_ prefix to FCMD_
+	to stop symbol/#def clashes on Cygwin/Mingw32 on NT. [Bug 822528]
+
+2003-10-21   Daniel Steffen  <das@users.sourceforge.net>
+
+	* tools/tcltk-man2html.tcl: fixed incorrect html generated for
+	.IP/.TP lists, now use <DL><DT>...<DD>...<P><DT>...<DD>...</DL>
+	instead of illegal  <DL><P><DT>...<DD>...<P><DT>...<DD>...</DL>.
+	Added skipping of directives directly after .TP to avoid them being
+	used as item descriptions, e.g. .TP\n.VS in clock.n.
+
+2003-10-21  Andreas Kupries  <andreask@pliers.activestate.com>
+
+	* win/tclWinPipe.c (BuildCommandLine): Applied the patch coming with
+	[Bug 805605] to the code, fixing the incorrect use of ispace noted by
+	Ronald Dauster <ronaldd@users.sourceforge.net>.
+
+2003-10-20  Kevin B. Kenny  <kennykb@users.sourceforge.net>
+
+	* doc/msgcat.n:
+	* library/msgcat/msgcat.tcl (mclocale,mcload):
+	* tools/tcl.wse.in:
+	* unix/Makefile.in:     Implementation of TIP#156, add a "root locale"
+	* win/makefile.bc:      to the 'msgcat' package. Advanced msgcat
+	* win/Makefile.in:      version number to 1.4
+	* win/Makefile.vc:
+
+2003-10-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdIL.c (SortInfo,etc): Reorganized so that SortInfo
+	carries an array of integer indices instead of a Tcl list. This nips
+	shimmering problems in the bud and simplifies SelectObjFromSublist at
+	the cost of making setup slightly more complex. [Bug 823768]
+
+2003-10-14  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclAppInit.c (sigHandler): Punt gracefully if exitToken has
+	already been destroyed.
+
+2003-10-14  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c:
+	* tests/regexp.test: fix to [Bug 823524] in regsub; added three new
+	tests.
+
+2003-10-14  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (TclAppendObjToErrorInfo):	New internal routine
+	that appends a Tcl_Obj to the errorInfo, saving the caller the trouble
+	of extracting the string rep.
+
+	* generic/tclStringObj.c (TclAppendLimitedToObj):	New internal
+	routine that supports truncated appends with optional ellipsis marking.
+	This single routine supports UTF-8-safe truncated appends needed in
+	several places throughout the Tcl source code, mostly for error and
+	stack messages. Clean fix for [Bug 760872].
+
+	* generic/tclInt.h:	Declarations for new internal routines.
+
+	* generic/tclCmdMZ.c:	Updated callers to use the new routines.
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
+	* generic/tclExecute.c:
+	* generic/tclIOUtil.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclParseExpr.c:
+	* generic/tclProc.c:
+	* generic/tclStringObj.c:
+	* mac/tclMacResource.c:
+
+	* library/init.tcl:	Updated ::errorInfo cleanup in [unknown] to
+	reflect slight modifications to Tcl_LogCommandInfo(). Corrects failing
+	init-4.* tests.
+
+2003-10-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	TIP#127 IMPLEMENTATION FROM JOE MICHAEL SCHLENKER
+
+	* generic/tclCmdIL.c (SelectObjFromSublist): Element selection engine.
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd, Tcl_LsortObjCmd):
+	* tests/lsearch.test:	Set up and use of element selection engine,
+	* tests/cmdIL.test:	plus tests and documentation.
+	* doc/lsearch.n:	Based on [Patch 693836]
+	* doc/lsort.n:
+
+2003-10-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tcl.h:
+	* generic/tclFileName.c:
+	* generic/tclIOUtil.c:
+	* generic/tclPathObj.c:
+	* generic/tclTest.c:
+	* mac/tclMacFile.c:
+	* tests/fileName.test: better tests for [Bug 813273]
+	* unix/tclUnixFCmd.c:
+	* unix/tclUnixFile.c:
+	* win/tclWin32Dll.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c:
+	* win/tclFileInt.h:
+
+	Fixed [Bug 800106] in which 'glob' was incapable of merging the
+	results of a directory listing (real or virtual) and any virtual
+	filesystem mountpoints in that directory (the latter were ignored).
+	This meant boundaries between different filesystems were not seamless
+	(e.g. 'glob */*' across a filesystem boundary was wrong). Added new
+	entry to Tcl_GlobTypeData in a totally backwards compatible way. To
+	allow listing of mounts, registered filesystems must support the
+	'TCL_GLOB_TYPE_MOUNT' flag. If this is not supported (e.g. in tclvfs
+	1.2) then mounts will simply not be listed for that filesystem.
+
+	Fixed [Bug 749876] 'file writable/readable/etc' (NativeAccess) using
+	correct permission checking code for Windows NT/2000/XP where more
+	complex user-based security/access priveleges are available,
+	particularly on shared volumes. The performance impact of this extra
+	checking will need further investigation. Note: Win 95,98,ME have no
+	support for this.
+
+	Also made better use of normalized rather than translated paths in the
+	platform specific code.
+
+2003-10-12  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixTest.c (TestalarmCmd): don't bother checking return
+	value of alarm. [Bug #664755] (english)
+
+2003-10-09  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* win/makefile.vc:  Applied patches for bug #801467 by Joe Mistachkin
+	* win/tclAppInit.c: to fix incompatible TCL_MEM_DEBUG handling in
+	* generic/tclObj.c: Win32 VC builds.
+
+2003-10-08  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Save and restore the iPtr->flag bits that
+	control the state of errorCode and errorInfo management when calling
+	"leave" execution traces, so that all error information of the traced
+	command is still available whether traced or not. [Bug 760947]
+	Thanks to Yahalom Emet.
+
+2003-10-08  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclTest.c (TestNumUtfCharsCmd): Command to allow finer
+	access to Tcl_NumUtfChars for testing.
+	* generic/tclUtf.c (Tcl_NumUtfChars): Corrected string length
+	determining when the length parameter is negative; the terminator is a
+	zero byte, not (necessarily) a \u0000 character. [Bug 769812]
+
+2003-10-07  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/cmdAH.test:
+	* tests/exec.test:		Corrected temporary file management
+	* tests/fileSystem.test:	issues uncovered by -debug 1 test
+	* tests/io.test:		operations. Also backported some
+	* tests/ioCmd.test:		other fixes from the HEAD.
+	* tests/main.test:
+	* tests/pid.test:		[Bugs 675605, 675655, 675659]
+	* tests/socket.test:
+	* tests/source.test:
+
+	* tests/fCmd.test:	Run tests with the [temporaryDirectory] as the
+	current directory, so that tests can depend on ability to write files.
+	[Bug 575837]
+
+	* doc/OpenFileChnl.3:	Updated Tcl_Tell and Tcl_Seek documentation to
+	reflect that they now return Tcl_WideInt (TIP 72). [Bug 787537]
+
+	* tests/io.test:	Corrected several tests that failed when paths
+	* tests/ioCmd.test:	included regexp-special chars. [Bug 775394]
+
+2003-10-06  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/configure:
+	* win/tcl.m4: removed incorrect checks for existence of optimization.
+	TCL_CFG_OPTIMIZED is now defined whenever the user does not build with
+	--enable-symbols.
+
+2003-10-06  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/regexp.test:		Matched [makeFile] with [removeFile].
+	* tests/regexpComp.test:	[Bug 675652]
+
+	* tests/fCmd.test (fCmd-8.2):	Test only that tilde-substitution
+	happens, not for any particular result. [Bug 685991]
+
+	* unix/tcl.m4 (SC_PATH_TCLCONFIG):	Corrected search path so that
+	alpha and beta releases of Tcl are not favored. [Bug 608698]
+
+	* tests/reg.test:	Corrected duplicate test names.
+	* tests/resource.test:	[Bugs 710370, 710358]
+	* tests/dict.test:
+
+	* tests/dict.test:	Updated [package require tcltest] lines to
+	* tests/fileSystem.test:	indiciate that these test files
+	* tests/lrepeat.test:	use features of tcltest 2.  [Bug 706114]
+	* tests/notify.test:
+	* tests/parseExpr.test:
+	* tests/unixNotfy.test:
+	* tests/winDde.test:
+
+2003-10-04  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (TEBC):
+	* tests/execute.test (execute-8.2): fix for [Bug 816641] - faulty
+	execution and catch stack management.
+
+2003-10-03  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Fixed error in ref count management of command
+	* generic/tclCmdMZ.c:	and execution traces that caused access to
+	freed memory in trace-32.1. [Bug 811483]
+
+2003-10-02  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclTrace.c: Corrected comingling of introspection results of
+	[trace info command] and [trace info execution]. [Bug 807243]
+	Thanks to Mark Saye.
+
+2003-10-01  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: fixed redo prebinding bug when DESTDIR="".
+	* mac/tclMacResource.c: fixed possible NULL dereference (bdesgraupes).
+
+2003-09-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c:
+	* tests/fileName.test: fix to inconsistent handling of backslash
+	path separators on Windows in 'file join' [Bug 813273]
+
+2003-09-29  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclPathObj.c (TclNativePathInFilesystem,TclFSGetPathType):
+	* generic/tclIOUtil.c (TclNativeDupInternalRep,TclGetPathType): Rename
+	to make sure function names won't interfere with other non-Tcl code
+	(reported by George Staplin)
+
+	TIP#121 IMPLEMENTATION FROM JOE MISTACHKIN
+
+	* generic/tclEvent.c (Tcl_SetExitProc,Tcl_Exit): Implementation of
+	application exit handler scheme.
+	* generic/tcl.decls (Tcl_SetExitProc): Public declaration.
+	* doc/Exit.3: Documentation of new API function.
+
+	TIP#112 IMPLEMENTATION
+
+	* generic/tclNamesp.c: Core of implementation.
+	* generic/tclInt.h (Namespace,TclInvalidateNsCmdLookup): Add command
+	list epoch counter and list of ensembles to namespace structure, and
+	define a macro to ease update of the epoch counter.
+	* generic/tclBasic.c (Tcl_CreateObjCommand,etc.): Update epoch counter
+	when list of commands in a namespace changes.
+	* generic/tclObj.c (TclInitObjSubsystem): Register ensemble subcommand
+	type.
+	* tests/namespace.test (42.1-47.6): Tests.
+	* doc/namespace.n: Documentation.
+
+	* library/http/http.tcl (geturl): Correctly check the type of
+	boolean-valued options. [Bug 811170]
+
+	* unix/tcl.m4 (SC_ENABLE_FRAMEWORK): Added note to make it clearer
+	that this is an OSX feature, not a general Unix feature. [Bug 619440]
+
+2003-09-28  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c: The windows port of expect can call
+	TclWinAddProcess before any of the other pipe functions. Added a
+	missing PipeInit() call to make sure the initialization happens.
+
+2003-09-25  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: ensure SYMROOT exists if OBJROOT is overridden on
+	command line. Replaced explict use of /usr/bin by ${BINDIR}.
+
+2003-09-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* library/package.tcl (tcl::MacPkgUnknown, tcl::MacOSXPkgUnknown):
+	Minor performance tweaks to reduce the number of [file] invocations.
+	Meant to improve startup times, at least a little bit. (The generic
+	equivalent patch was applied on 2003-02-21).
+
+2003-09-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* trace.test: removed 'knownBug' from a test which doesn't illustrate
+	a bug, just a bad test.
+
+2003-09-23  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c:
+	* generic/tclInt.h: changed the evaluation-stack addressing mode, from
+	array-style to pointer-style; the catch stack and evaluation stack are
+	now contiguous in memory. [Patch 457449]
+
+2003-09-23  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/trace.test (trace-31,32-*):  Added tests for [Bug 807243] and
+	[Bug 811483].
+
+	* library/init.tcl (auto_load, auto_import):  Expanded Eric Melski's
+	2000-01-28 fix for [Bug 218871] to all potentially troubled uses of
+	[info commands] on input data, where glob-special characters could
+	cause problems.
+
+2003-09-20  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/expr.test (expr-23.4): Prevented accidental wrapping round of
+	exponential operation; it isn't portable, and not what I intended to
+	test either. [Bug 808244]
+
+2003-09-19  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c: adding (DE)CACHE_STACK_INFO() pairs to protect
+	all calls that may cause traces on ::errorInfo or ::errorCode to
+	corrupt the stack. [Bug 804681]
+
+2003-09-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tclPathObj.c: fix to test-suite problem introduced by the bug fix
+	below. No problem in ordinary code, just test suite code which
+	manually adjusts tclPlatform. [Bug 808247]
+
+2003-09-16  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/filename.n: documentation of Windows-specific feature as
+        discussed in [Bug 541989]
+	* generic/tclPathObj.c: fix for normalization of volume-relative paths
+	[Bug 767834]
+        * tests/winFCmd.test: new tests for both of the above.
+	* tests/cmdAH.test: fix for AFS problem in test suite [Bug 748960]
+
+2003-09-13  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	TIP#123 IMPLEMENTATION BASED ON WORK BY ARJEN MARKUS
+
+	* generic/tclCompile.h (INST_EXPON):		Implementation of
+	* generic/tclCompile.c (tclInstructionTable):	exponential operator.
+	* generic/tclCompExpr.c (operatorTable):
+	* generic/tclParseExpr.c (ParseExponentialExpr, GetLexeme):
+	* generic/tclExecute.c (TclExecuteByteCode, ExponWide, ExponLong):
+	(IllegalExprOperandType):
+	* tests/expr.test:
+	* tests/compExpr-old.test:
+	* doc/expr.n:
+
+2003-09-10  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/opt/optparse.tcl:	Latest revisions caused [OptGuessType]
+	to guess "int" instead of "string" for empty strings. Missed the
+	required "-strict" option to [string is]. Thanks to Revar Desmera.
+	[Bug 803968]
+
+2003-09-08  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinLoad.c (TclpDlopen): Changed the error message for
+	ERROR_PROC_NOT_FOUND to be a bit more helpful in giving us clues.
+	"can't find specified procedure" means a function in the import table,
+	for implicit loading, couldn't be resolved and that's why the load
+	failed.
+
+2003-09-04  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/Tcl_Main.3:
+	* doc/FileSystem.3:				Implementation of
+	* doc/source.n:					TIPs 137/151. Adds a
+	* doc/tclsh.1:					-encoding option to
+	* generic/tcl.decls:				the [source] command
+	* generic/tclCmdMZ.c (Tcl_SourceObjCmd):	and a new C routine,
+	* generic/tclIOUtil.c (Tcl_FSEvalFileEx):	Tcl_FSEvalFileEx(),
+	* generic/tclMain.c (Tcl_Main):			that provides C access
+	* mac/tclMacResource.c (Tcl_MacSourceObjCmd):	to the same function.
+	* tests/cmdMZ.test:				Also adds command line
+	* tests/main.test:	option handling in Tcl_Main() so that tclsh
+	* tests/source.test:	and other apps built on Tcl_Main() respect a
+	-encoding command line option before a script filename. Docs and tests
+	updated as well. [Patch 742683]
+	This is a ***POTENTIAL INCOMPATIBILITY*** only for those C programs
+	that embed Tcl, build on Tcl_Main(), and make use of Tcl_Main's former
+	ability to pass a leading "-encoding" option to interactive shell
+	operations.
+
+	* generic/tclInt.decls:				Added internal stub
+	* generic/tclMain.c (Tcl*StartupScript*):	table entries for two
+	new functions Tcl_SetStartupScript() and Tcl_GetStartupScript() that
+	set/get the path and encoding for the startup script to be evaluated
+	by either Tcl_Main() or Tk_Main(). Given public names in anticipation
+	of their exposure by a followup TIP.
+
+	* generic/tclDecls.h:		make genstubs
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c:
+
+2003-09-04  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/SplitList.3:	Implementation of TIP 148.  Fixes [Bug 489537].
+	* generic/tcl.h:	Updated Tcl_ConvertCountedElement() to quote
+	* generic/tclUtil.c:	the leading "#" character of all list elements
+	unless the TCL_DONT_QUOTE_HASH flag is passed in.
+
+	* generic/tclDictObj.c:	Updated Tcl_ConvertCountedElement() callers
+	* generic/tclListObj.c:	to pass in the TCL_DONT_QUOTE_HASH flags
+	* generic/tclResult.c:	when appropriate.
+
+2003-08-31  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/return.n:	Updated [return] docs to cover new TIP 90 features.
+
+	* doc/break.n:		Added SEE ALSO references to return.n
+	* doc/continue.n:
+
+2003-09-01  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/Namespace.3: Basic documentation for the TIP#139 functions. This
+	will need improving, but the basic bits are there at least.
+
+2003-08-31  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/catch.n:	Updated [catch] docs to cover new TIP 90 features.
+
+2003-08-29  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCmdAH.c:	Corrected bug in TIP 90 implementation where
+	* tests/cmdMZ.test:	the default -errorcode NONE value was not
+	copied into the return options dictionary. This correction modified
+	one test result.
+
+2003-08-27  David Gravereaux <davygrvy@pobox.com>
+
+	* compat/strftime.c (_fmt): Removed syst array intializer that
+	couldn't take variables within it under the watcom compiler:
+	'Initializers must be constant'. I believe Borland has this strictness
+	as well. VC++ must be non-standard about this.
+
+	Changed Win32 platform #ifdef from 'WIN32' to '__WIN32__' as this is
+	the correct one to use across the Tcl sources. Even though we do force
+	it in tcl.h, the true parent one is __WIN32__.
+
+	Added missing CONST'ification usage to match prototype listed in
+	tclInt.decls.
+
+	* win/tclWinPort.h:  Added a block for OpenWatcom adjustments that
+	fixes 1) the same issue Mo did for MinGW lack of missing LPFN_*
+	typedefs in their WINE derived <winsock2.h> and 2) The need to be
+	strict about how the char type needs to be signed by default.
+
+	* win/tclWinSock.c:  Added OpenWatcom to the commentary about the
+	#ifdef HAVE_NO_LPFN_DECLS block.
+
+	* win/tclWinTime.c:  Changed use of '_timezone' to 'timezone' as this
+	difference is already adjusted for in tclWinPort.h. Removed
+	unreferenced posixEpoch file-scope global.
+
+	* win/tclWinFile.c (WinReadLinkDirectory): Fix for 'Initializers must
+	be constant' with the driveSpec array using OpenWatcom.
+
+2003-08-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclUtil.c:	Corrected [Bug 411825] and other bugs in
+	TclNeedSpace() where non-breaking space (\u00A0) and backslash-escaped
+	spaces were handled incorrectly.
+	* tests/util.test:	Added new tests util-8.[2-6].
+
+2003-08-26  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tcl.h: Added some support for the LCC-Win32 compiler.
+	Unfortunetly, this compiler has a bug in its preprocessor and can't
+	build Tcl even with this minor patch. Also added some support for the
+	OpenWatcom compiler. A new win/makefile.wc to follow soon.
+
+2003-08-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tools/genStubs.tcl (genStubs::makeDecl): A more subtle way of
+	generating stubbed declarations allows us to have declarations of a
+	function in multiple interfaces simultaneously.
+
+	* generic/tcl.decls: Duplicated some namespace declarations from
+	tclInt.decls here, as mandated by TIP #139. This is OK since the
+	declarations match and will end up using the declarations in the
+	public code from now on because of #include ordering. Keeping the old
+	declarations in tclInt.decls; there's no need to gratuitously break
+	compatability for those extensions which are already clients of the
+	namespace code.
+
+2003-08-23  Zoran Vasiljevic  <zoran@archiwrae.com>
+
+	* generic/tclIOUtil.c: merged fixes for thread-unsafe handling of
+	filesystem records [Bug 753315]. This also fixed the [Bug 788780]
+	* generic/tclPathObj.c: merged fixes for thread-unsafe handling of
+	filesystem records. [Bug 753315]
+
+	* generic/tclFileSystem.h: merged fixes for thread-unsafe handling of
+	filesystem records. [Bug 753315]
+
+2003-08-19  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* win/tclWinSerial.c (SerialErrorStr): Fixed a syntax error created in
+	the previous code cleanup.
+
+2003-08-19  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* win/tclWinSerial.c: Adjusted commenting and spacing usage to follow
+	the principles of the Style Guide better.
+
+2003-08-18  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/tcl.m4 (SC_ENABLE_SYMBOLS): Use test instead of -eq, which does
+	not work. [Bug 781109]
+
+2003-08-13  Chengye Mao <chengye.geo@yahoo.com>
+
+	* win/tclWinPipe.c: fixed a bug in BuildCommandLine. This bug built a
+	command line with a missing space between tclpipe.dll and the
+	following arguments. It caused error in Windows 98 when exec
+	command.com (e.g. dir). [Bug 789040]
+
+2003-08-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	TIP #136 IMPLEMENTATION from Simon Geard <simon.geard@ntlworld.com>
+	* generic/tclCmdIL.c (Tcl_LrepeatObjCmd): Adapted version of Simon's
+	* doc/lrepeat.n:			  patch, updated to the HEAD
+	* tests/lrepeat.test:			  and matching the core style.
+	* generic/tclBasic.c (buildIntCmds):	Splice into core.
+	* generic/tclInt.h:
+	* doc/list.n:				Cross-reference.
+
+2003-08-06  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinInit.c: recognize amd64 and ia32_on_win64 cpus.
+
+2003-08-06  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/msgcat/msgcat.tcl:	Added escape so that non-Windows
+	* library/msgcat/pkgIndex.tcl:	platforms do not try to use the
+	registry package. This can save a costly and pointless package search.
+	Bumped to 1.3.1. Thanks to Dave Bodenstab. [Bug 781609]
+
+2003-08-05  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_INVOKE, INST_EVAL, INST_PUSH_RESULT):
+	added a Tcl_ResetResult(interp) at each point where the interp's
+	result is pushed onto the stack, to avoid keeping an extra reference
+	that may cause costly Tcl_Obj duplication. Detected by Franco Violi,
+	analyzed by Peter Spjuth and Donal Fellows. [Bug 781585]
+
+2003-07-28  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3:
+	* doc/Translate.3: better documentation of Tcl_TranslateFileName and
+	related functions. [Bug 775220]
+
+2003-07-24  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tcl.h: Revert change made on 2003-07-21 since it made the
+	sizeof(Tcl_Obj) different for regular vs mem debug builds.
+	* generic/tclInt.h: Define TclDecrRefCount in terms of
+	Tcl_DbDecrRefCount which removes one layer of inderection.
+	* generic/tclObj.c (TclDbInitNewObj, Tcl_DbIncrRefCount,
+	(Tcl_DbDecrRefCount, Tcl_DbIsShared): Define ThreadSpecificData that
+	contains a hashtable. The table is used to ensure that a Tcl_Obj is
+	only acted upon in the thread that allocated it. This checking code is
+	enabled only when mem debug and threads are enabled.
+
+2003-07-24  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/async.test:	Added several tests that demonstrate [Bug
+	* tests/basic.test:	489537], Tcl's longstanding failure to
+	* tests/dict.test:	properly quote any leading '#' character when
+	* tests/dstring.test:	generating the string rep of a list so that
+	* tests/list.test:	the comment-power of that character is hidden
+	* tests/parse.test:	from any [eval], in order to satisfy the
+	* tests/util.test:	documentation that [list] does [eval]-safe
+				quoting.
+
+2003-07-24  Reinhard Max  <max@suse.de>
+
+	* library/package.tcl: Fixed a typo that broke pkg_mkIndex -verbose.
+	* tests/pkgMkIndex.test: Added a test for [pkg_mkIndex -verbose].
+
+	* ChangeLog.2002 (new file):
+	* ChangeLog: broke changes from 2002 into ChangeLog.2002 to reduce
+	size of the main ChangeLog.
+
+2003-07-23  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/Makefile.in: changes to html-tcl & html-tk targets for
+	compatibility with non-gnu makes.
+
+	* unix/Makefile.in: added macosx/README to dist target.
+
+2003-07-23  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* win/tclWinReg.c (OpenSubKey): Fixed bug 775976 which causes the
+	registry set command to fail when built with VC7.
+	* library/reg/pkgIndex.tcl: Incremented the version to 1.1.2.
+
+2003-07-21  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	Check that the thread incrementing or decrementing the ref count of a
+	Tcl_Obj is the thread that originally allocated the thread. This fail
+	fast behavior will catch programming errors that allow a single
+	Tcl_Obj to be accessed from multiple threads.
+
+	* generic/tcl.h (Tcl_Obj): Add allocThread member to Tcl_Obj. This
+	member records the thread id the Tcl_Obj was allocated. It is used to
+	check that any future ref count incr or decr is done from the same
+	thread that allocated the Tcl_Obj. This member is defined only when
+	threads and mem debug are enabled.
+	* generic/tclInt.h (TclNewObj, TclDbNewObj, TclDecrRefCount):
+	Define TclNewObj and TclDbNewObj using TclDbInitNewObj when mem debug
+	is enabled. This fixes a problem where TclNewObj calls did not work
+	the same as TclDbNewObj when mem debug was enabled.
+	* generic/tclObj.c (TclDbInitNewObj, Tcl_DbIncrRefCount,
+	(Tcl_DbDecrRefCount): Add new helper to init Tcl_Obj members when mem
+	debug is enabled. Init the allocThread member in TclDbInitNewObj and
+	check it in Tcl_DbIncrRefCount and Tcl_DbDecrRefCount to make sure a
+	Tcl_Obj allocated in one thread is not being acted upon in another
+	thread.
+
+2003-07-21  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* test/cmdAH.test: ensure certain tests run in local filesystem. [Bug
+	748960]
+
+2003-07-18  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: added option to allow installing manpages in
+	addition to default html help.
+
+2003-07-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/Utf.3: Tightened up documentation of Tcl_UtfNext and Tcl_UtfPrev
+	to better match the behaviour. [Bug 769895]
+
+2003-07-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/http/pkgIndex.tcl: upped to http v2.4.4
+	* library/http/http.tcl: add support for user:pass info in URL.
+	* tests/http.test:       [Bug 759888] (shiobara)
+
+2003-07-18  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:                Restored the [Eval] proc to replace
+	* library/tcltest/tcltest.tcl:  the [::puts] command when either the
+	-output or -error option for [test] is in use, in order to capture
+	data written to the output or error channels for comparison against
+	what is expected.  This is easier to document and agrees better with
+	most user expectations than the previous attempt to replace [puts]
+	only in the caller's namespace.  Documentation made more precise on
+	the subject.  [Bug 706359]
+
+	* doc/AddErrInfo.3:	Improved consistency of documentation by
+	* doc/CrtTrace.3:      	using "null" everywhere to refer to the
+	* doc/Encoding.3:      	character '\0', and using "NULL" everywhere
+	* doc/Eval.3:          	to refer to the value of a pointer that points
+	* doc/GetIndex.3:      	to nowhere. Also dropped references to ASCII
+	* doc/Hash.3:          	that are no longer true, and standardized on
+	* doc/LinkVar.3:       	the hyphenated spelling of "null-terminated".
+	* doc/Macintosh.3:
+	* doc/OpenFileChnl.3:
+	* doc/SetVar.3:
+	* doc/StringObj.3:
+	* doc/Utf.3:
+
+	* doc/CrtSlave.3 (Tcl_MakeSafe):  Removed warning about possible
+	deprecation (no TIP on that).
+
+2003-07-17  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclUnixFCmd.c: fix for compilation errors on platforms where
+	configure detects non-functional chflags(). [Bug 748946]
+
+	* macosx/Makefile: Rewrote buildsystem for Mac OS X framework build
+	to be purely make driven; in order to become independent of Apple's
+	closed-source IDE and build tool. The changes are intended to be
+	transparent to the Makefile user, all existing make targets and cmd
+	line variable overrides should continue to work. Changed build to only
+	include tcl specific html help in Tcl.framework, the tk specific html
+	help is now included in Tk.framework. Added var to allow overriding of
+	tclsh used during html help building (Landon Fuller).
+
+	* macosx/Tcl.pbproj/project.pbxproj:
+	* macosx/Tcl.pbproj/jingham.pbxuser: Changed to purely call through to
+	the make driven buildsystem; Tcl.framework is no longer assembled by
+	ProjectBuilder.
+	Set default SYMROOT in target options to simplify setting up PB
+	(manually setting common build folder for tcl & tk no longer needed).
+
+	* tools/tcltk-man2html.tcl: Added options to allow building only the
+	tcl or tk html help files; the default behaviour with none of the new
+	options is to build both, as before.
+
+	* unix/Makefile.in: Added targets for building only the tcl or tk help
+
+	* macosx/README (new): Tcl specific excerpts of tk/macosx/README.
+
+	* generic/tcl.h: Updated reminder comment about editing
+	macosx/Tcl.pbproj/project.pbxproj when version number changes.
+
+2003-07-16  Mumit Khan  <khan@nanotech.wisc.edu>
+
+	* generic/tclPathObj.c (SetFsPathFromAny): Add Cygwin specific code to
+	convert POSIX filename to native format.
+	* generic/tclFileName.c (Tcl_TranslateFileName): And remove from here.
+	(TclDoGlob): Adjust for cygwin and append / for dirs instead of \
+	* win/tclWinFile.c (TclpObjChdir): Use chdir on Cygwin.
+	[Patch 679315]
+
+2003-07-16  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/safe.tcl (FileInAccessPath): normalize paths before
+	comparison. [Bug 759607] (myers)
+
+	* unix/tclUnixNotfy.c (NotifierThreadProc): correct size of found and
+	word vars from int to long. [Bug 767578] (hgo)
+
+	* generic/tcl.h:       Add recognition of -DTCL_UTF_MAX=6 on the make
+	* generic/regcustom.h: line to support UCS-4 mode. No config arg at
+	this time, as it is not the recommended build mode.
+
+	* generic/tclPreserve.c: In Result and Preserve'd routines, do not
+	* generic/tclUtil.c:     assume that ckfree == free, as that is not
+	* generic/tclResult.c:   always true. [Bug 756791] (fuller)
+
+2003-07-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/CrtSlave.3 (Tcl_MakeSafe): Updated documentation to strongly
+	discourage use. IMHO code outside the core that uses this function is
+	a bug... [Bug 655300]
+
+2003-07-16  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclFileName.c (Tcl_GlobObjCmd):	[Bug 771840]
+	* generic/tclPathObj.c (Tcl_FSConvertToPathType):[Bug 771947]
+	* unix/tclUnixFCmd.c (GetModeFromPermString):	[Bug 771949]
+	Silence compiler warnings about unreached lines.
+
+	* library/tcltest/tcltest.tcl (ProcessFlags):	Corrected broken call
+	* library/tcltest/pkgIndex.tcl:			to [lrange]. Bumped to
+	version 2.2.4. [Bug 772333]
+
+2003-07-15  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/dltest/pkga.c (Pkga_EqObjCmd): Fix typo that was causing a
+	crash in load.test.
+
+2003-07-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/array.n: Make sure docs are synched with the 8.4 release.
+
+2003-07-15  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/http.n:  Updated SYNOPSIS to match actual syntax of commands.
+	[Bug 756112]
+
+	* unix/dltest/pkga.c:	Updated to not use Tcl_UtfNcmp and counted
+	strings instead of strcmp (not defined in any #include'd header) and
+	presumed NULL-terminated strings.
+
+	* generic/tclCompCmds.c (TclCompileIfCmd):  Prior fix of Bug 711371 on
+	2003-04-07 introduced a buffer overflow. Corrected. [Bug 771613]
+
+2003-07-15  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/rules.vc: Added a missing $(OPTDEFINES) which broke the build if
+	STATS=memdbg was specified.
+
+2003-07-15  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdIL.c (SortCompare): Cleared up confusing error
+	message. [Bug 771539]
+
+2003-07-11  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/binary.test (binary-46.*): Tests to help enforce the current
+	behaviour.
+	* doc/binary.n: Documented that [binary format a] and [binary scan a]
+	do encoding conversion by dropping high bytes, unlike the rest of the
+	core. [Bug 735364]
+
+2003-07-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/package.tcl:  Corrected [pkg_mkIndex] bug reported on
+	comp.lang.tcl. The indexer was searching for newly indexed packages
+	instead of newly provided packages.
+
+2003-07-08  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/winFCmd.test: fix for five tests under win98 [Bug 767679]
+
+2003-07-07  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* doc/array.n: add examples from Welton
+
+2003-06-23  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/file.n: clarification of 'file tail' behaviour [Bug 737977]
+
+2003-07-04  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/expr.n: Tighten up the wording of some operations. [Bug 758488]
+
+	* tests/cmdAH.test: Made tests of [file mtime] work better on FAT
+	filesystems. [Patch 760768]  Also a little general cleanup.
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Made [string map] accept
+	dictionaries for maps.  This is much trickier than it looks, since map
+	entry ordering is significant. [Bug 759936]
+
+	* generic/tclVar.c (Tcl_ArrayObjCmd, TclArraySet): Made [array get]
+	and [array set] work with dictionaries, producing them and consuming
+	them. Note that for compatability reasons, you will never get a dict
+	from feeding a string literal to [array set] since that alters the
+	trace behaviour of "multi-key" sets. [Bug 759935]
+
+2003-06-23  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclTrace.c: fix to Window debug build compilation error.
+
+2003-06-27  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/init.test: Added [cleanupTests] to report results of tests
+	* tests/pkg.test:  that run in slave interps.  [Bugs 761334,761344]
+
+	* tests/http.test: Used more reliable path to find httpd script.
+
+2003-06-25  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/init.test:  Added tests init-4.6.* to illustrate [Bug 760872]
+
+2003-06-25  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclTrace.c: New file, factoring out of virtually all the
+	various trace-related things from tclBasic.c and tclCmdMZ.c with the
+	goal of making this a separate maintenance area.
+
+2003-06-25  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Add -ieee when compiling with cc and
+	add -mieee when compiling with gcc under OSF1-V5 "Tru64" systems. [Bug
+	748957]
+
+2003-06-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/encoding.n: Corrected the docs to say that [source] uses the
+	system encoding, which it always did anyway (since 8.1) [Bug 742100]
+
+2003-06-24  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclHash.c (Tcl_HashStats): Prevented occurrence of
+	division-by-zero problems.  [Bug 759749]
+
+2003-06-24  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/tclUnixPort.h: #undef inet_ntoa before #define to avoid
+	compiler warning under freebsd. [Bug 745844]
+
+2003-06-23  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* doc/dde.n:                 Committed TIP #135 which changes the
+	* win/tclWinDde.c:           -exact option to -force. Also cleaned a
+	* tests/winDde.test:         bug in the tests.
+	* library/dde/pkgIndex.tcl:  Incremented version to 1.2.5
+
+	* doc/dde.n:                 Committed TIP #120 which provides the
+	* win/tclWinDde.c:           dde package for safe interpreters.
+	* tests/winDde.test:         Incremented package version to 1.2.4
+	* library/dde/pkgIndex.tcl:
+
+2003-06-23  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFCmd.c: fix to bad error message when trying to do 'file
+	copy foo ""'. [Bug 756951]
+	* tests/fCmd.test: added two new tests for the bug.
+
+	* win/tclWinFile.c:
+	* win/tclWin32Dll.c: recommitted some filesystem globbing speed-ups,
+	but disabled some on the older Win 95/98/ME where they don't seem to
+	work.
+
+	* doc/FileSystem.3: documentation fix [Bug 720634]
+
+2003-06-18  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclNamesp.c (Tcl_Export): removed erroneous comments. [Bug
+	756744]
+
+2003-06-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/makefile.vc:  fixes to check-in below so compilation now works
+	again on Windows.
+
+	* generic/tclCmdMZ.c:
+	* tests/regexp.test: fixing of bugs related to regexp and regsub
+	matching of empty strings. Addition of a number of new tests. [Bug
+	755335]
+
+2003-06-16  Andreas Kupries  <andreask@activestate.com>
+
+	* win/Makefile.in:  Haven't heard back from David for a week. Now
+	* win/configure:    committing the remaining changes.
+	* win/configure.in: Note: In active contact with Helmut Giese about
+	* win/makefile.vc:  the borland relatedchanges. This part will see
+	* win/rules.vc:     future updates.
+	* win/tcl.m4:
+	* win/makefile.bc:
+
+2003-06-10  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclConfig.c (ASSOC_KEY): Changed the key to
+	"tclPackageAboutDict" (tcl prefix) to make collisions with the keys of
+	other packages more unlikely.
+
+2003-06-10  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c:
+	* generic/tclExecute.c: let TclExecuteObjvInternal call
+	TclInterpReady instead of relying on its callers to do so; fix for the
+	part of [Bug 495830] that is new in 8.4.
+	* tests/interp.test: Added tests 18.9 (knownbug) and 18.10
+
+2003-06-09  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tcl.decls:  Ported the changes from the
+	* generic/tcl.h:      'tip-59-implementation' branch into the CVS
+	* generic/tclBasic.c: head. Regenerated stub table. Regenerated the
+	* generic/tclInt.h:   configure's scripts, with help from Joe English.
+	* generic/tclDecls.h:
+	* generic/tclStubInit.c:
+	* generic/tclConfig.c:
+	* generic/tclPkgConfig.c:
+	* unix/Makefile.in:
+	* unix/configure.in:  The changes in the windows section are not yet
+	* unix/tcl.m4:        committed, they await feedback from David
+	* unix/mkLinks:       Gravereaux.
+	* doc/RegConfig.3:
+	* mac/tclMacPkgConfig.c:
+	* tests/config.test:
+
+2003-06-09  Don Porter  <dgp@users.sourceforge.net>
+
+	* string.test (string-4.15): Added test for [string first] bug
+	reported in Tcl 8.3, where test for all-single-byte-encoded strings
+	was not reliable.
+
+2003-06-04  Joe Mistachkin  <joe@mistachkin.com>
+
+	* tools/man2help.tcl: Added duplicate help section checking and
+	* tools/index.tcl:    corrected a comment typo for the getTopics proc
+	in index.tcl. [Bug 748700]
+
+2003-06-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWinFCmd.c:
+	* tests/fCmd.test: fix to [Bug #747575] in which a bad error message
+	is given when trying to rename a busy directory to one with the same
+	prefix, but not the same name. Added three new tests.
+
+2003-05-23  D. Richard Hipp <drh@hwaci.com>
+
+	* win/tclWinTime.c: Add tests to detect and avoid a division by zero
+	in the windows precision timer calibration logic.
+
+2003-05-23  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclObj.c (tclCmdNameType):  Converted internal rep
+	management of the cmdName Tcl_ObjType the opposite way, to always use
+	the twoPtrValue instead of always using the otherValuePtr. Previous
+	fix on 2003-05-12 broke several extensions that wanted to poke around
+	with the twoPtrValue.ptr2 value of a cmdName Tcl_Obj, like TclBlend
+	and e4graph. [Bug 726018]
+	Thanks to George Petasis for the bug report and Jacob Levy for testing
+	assistance.
+
+2003-05-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/mkLinks: Set the var S to "" at the top of the file to avoid
+	error when user has set S to something. [Tk Bug 739833]
+
+2003-05-22  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.pbproj/project.pbxproj: added missing references to new
+	source files tclPathObj.c and tclMacOSXFCmd.c.
+
+	* macosx/tclMacOSXBundle.c: fixed a problem that caused only the first
+	call to Tcl_MacOSXOpenVersionedBundleResources() for a given bundle
+	identifier to succeed. This caused the tcl runtime library not to be
+	found in all interps created after the inital one.
+
+2003-05-19  Kevin B. Kenny  <kennykb@hippolyta>
+
+	* unix/tclUnixTime.c: Corrected a bug in conversion of non-ASCII
+	chars in the format string.
+
+2003-05-19  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.pbproj/project.pbxproj: changed tclConfig.sh location in
+	versioned framework subdirectories to be identical to location in
+	framework toplevel; fixed stub library symbolic links to be tcl
+	version specific.
+
+	* unix/tclUnixTime.c: fixed typo.
+
+2003-05-18  Kevin Kenny  <kennykb@acm.org>
+
+	* compat/strftime.c:  Modified TclpStrftime to return its result in
+	* generic/tclClock.c: UTF-8 encoding, and removed the conversion from
+	* mac/tclMacTime.c:   system encoding to UTF-8 from [clock format].
+	* unix/tclUnixTime.c: Needed to avoid double conversion of the
+	* win/tclWinTime.c:   timezone name on Windows systems. [Bug 624408]
+
+2003-05-16  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* library/dde/pkgIndex.tcl:  Applied TIP #130 which provides for
+	* tests/winDde.test:         unique dde server names. Added some more
+	* win/tclWinDde.c:           tests. Fixes [Bug 219293]
+
+	* doc/dde.n: Updated documentation re TIP #130.
+	* tests/winDde.test: Applied patch for [Bug 738929] by KKB and changed
+	to new-style tests.
+
+2003-05-16  Kevin B. Kenny  <kennykb@acm.org>
+
+	* unix/Makefile.in:	Removed one excess source file tclDToA.c
+
+2003-05-16  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Tcl.pbproj/project.pbxproj: updated copyright year.
+
+2003-05-15  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclGetDate.y: added further hackery to the yacc
+	* generic/tclDate.c:    post-processing to arrange for the code to set
+	* unix/Makefile.in:     up exit handlers to free the stacks. [Bug
+				736425]
+
+2003-05-15  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinFile.c (TclpMatchInDirectory): revert glob code to r1.44
+	as 2003-04-11 optimizations broke Windows98 glob'ing.
+
+	* doc/socket.n: nroff font handling correction
+
+	* library/encoding/gb2312-raw.enc (new): This is the original
+	gb2312.enc renamed to allow for it to still be used. This is needed by
+	Tk (unix) because X fonts with gb2312* charsets really do want the
+	original gb2312 encoding. [Bug 557030]
+
+2003-05-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Stop unwarranted demotion of
+	wide values to longs by formatting of int values. [Bug 699060]
+
+2003-05-14  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/encoding/gb2312.enc: copy euc-cn.enc over original
+	gb2312.enc. gb2312.enc appeared to not work as expected, and most uses
+	of gb2312 really mean euc-cn (which may be the cause of the problem).
+	[Bug 557030]
+
+2003-05-14  Daniel Steffen  <das@users.sourceforge.net>
+
+	Implementation of TIP 118:
+
+	* generic/tclFCmd.c (TclFileAttrsCmd): return the list of attributes
+	that can be retrieved without error for a given file, instead of
+	aborting the whole command when any error occurs.
+
+	* unix/tclUnixFCmd.c: added support for new file attributes and for
+	copying Mac OS X file attributes & resource fork during [file copy].
+
+	* generic/tclInt.decls: added declarations of new external commands
+	needed by new file attributes support in tclUnixFCmd.c.
+
+	* macosx/tclMacOSXFCmd.c (new): Mac OS X specific implementation of
+	new file attributes and of attribute & resource fork copying.
+
+	* mac/tclMacFCmd.c: added implementation of -rsrclength attribute &
+	fixes to other attributes for consistency with OSX implementation.
+
+	* mac/tclMacResource.c: fixes to OSType handling.
+
+	* doc/file.n: documentation of [file attributes] changes.
+
+	* unix/configure.in: check for APIs needed by new file attributes.
+
+	* unix/Makefile.in:
+	* unix/tcl.m4: added new platform specifc tclMacOSXFCmd.c source.
+
+	* unix/configure:
+	* generic/tclStubInit.c:
+	* generic/tclIntPlatDecls.h: regen.
+
+	* tools/genStubs.tcl: fixes to completely broken code trying to
+	prevent overlap of "aqua", "macosx", "x11" and "unix" stub entries.
+
+	* tests/unixFCmd.test: added tests of -readonly attribute.
+
+	* tests/macOSXFCmd.test (new): tests of macosx file attributes and of
+	preservation of attributes & resource fork during [file copy].
+
+	* tests/macFCmd.test: restore -readonly attribute of test dir, as
+	otherwise its removal can fail on unices supporting -readonly.
+
+2003-05-13  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclEnv.c: Another putenv() copy behavior problem repaired
+	when compiling on windows and using microsoft's runtime. [Bug 736421]
+
+2003-05-13  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclIOUtil.c: ensure cd is thread-safe.
+	[Bug 710642] (vasiljevic)
+
+2003-05-13  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclEvent.c (Tcl_Finalize): Removed unused variable to reduce
+	compiler warnings. [Bug 664745]
+
+2003-05-13  Joe Mistachkin  <joe@mistachkin.com>
+
+	* generic/tcl.decls:  Changed Tcl_JoinThread parameter name from
+	* generic/tclDecls.h: "id" to "threadId". [Bug 732477]
+	* unix/tclUnixThrd.c:
+	* win/tclWinThrd.c:
+	* mac/tclMacThrd.c:
+
+2003-05-13  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tcl.decls:
+	* macosx/tclMacOSXBundle.c: added extended version of the
+	Tcl_MacOSXOpenBundleResources() API taking an extra version number
+	argument: Tcl_MacOSXOpenVersionedBundleResources(). This is needed to
+	be able to access bundle resources in versioned frameworks such as Tcl
+	and Tk, otherwise if multiple versions were installed, only the latest
+	version's resources could be accessed. [Bug 736774]
+
+	* unix/tclUnixInit.c (Tcl_MacOSXGetLibraryPath): use new versioned
+	bundle resource API to get tcl runtime library for TCL_VERSION. [Bug
+	736774]
+
+	* generic/tclPlatDecls.h:
+	* generic/tclStubInit.c: regen.
+
+	* unix/tclUnixPort.h: worked around the issue of realpath() not
+	being thread-safe on Mac OS X by defining NO_REALPATH for threaded
+	builds on Mac OS X. [Bug 711232]
+
+2003-05-12  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/cmdAH.test: General clean-up of tests so that all
+	tcltest-specific commands are protected by constraints and all
+	platforms see the same number of tests. [Bug 736431]
+
+2003-05-12  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclInterp.c: (AliasObjCmd):   Added refCounting of the words
+	* tests/interp.test (interp-33.1):      of the target of an interp
+	alias during its execution. Also added test. [Bug 730244]
+
+	* generic/tclBasic.c (TclInvokeObjectCommand):  objv[argc] is no
+	longer set to NULL (Tcl_CreateObjCommand docs already say that it
+	should not be accessed).
+
+	* tests/cmdMZ.test:  Forgot to import [temporaryDirectory].
+
+	* generic/tclObj.c (tclCmdNameType):  Corrected variable use of the
+	otherValuePtr or the twoPtrValue.ptr1 fields to store a
+	(ResolvedCmdName *) as the internal rep. [Bug 726018]
+
+	* doc/Eval.3:  Corrected prototype for Tcl_GlobalEvalObj [Bug 727622].
+
+2003-05-12  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c (TclObjLookupVar): [Bug 735335] temporary fix,
+	disabling usage of tclNsVarNameType.
+	* tests/var.test (var-15.1): test for [Bug 735335]
+
+2003-05-10  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinSerial.c (SerialCloseProc): correct mem leak on closing a
+	Windows serial port [Bug 718002] (schroedter)
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): prevent string repeat crash
+	when overflow sizes were given (throws error). [Bug 714106]
+
+2003-05-09  Joe Mistachkin <joe@mistachkin.com>
+
+	* generic/tclThreadAlloc.c (TclFreeAllocCache): Fixed memory leak
+	caused by treating cachePtr as a TLS index. [Bug 731754]
+
+	* win/tclAppInit.c (Tcl_AppInit): Fixed memory leaks caused by not
+	freeing the memory allocated by setargv and the async handler created
+	by Tcl_AppInit. An exit handler has been created that takes care of
+	both leaks. In addition, Tcl_AppInit now uses ckalloc instead of
+	Tcl_Alloc to allow for easier leak tracking and to be more consistent
+	with the rest of the Tcl core. [Bugs 733156, 733221]
+
+	* tools/encoding/txt2enc.c (main): Fixed memory leak caused by failing
+	to free the memory used by the toUnicode array of strings [Bug 733221]
+
+2003-05-09  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclCompileScript):
+	* tests/compile.test (compile-3.5): corrected wrong test and
+	behaviour in the earlier fix for [Bug 705406]; Don Porter reported
+	this as [Bug 735055], and provided the solution.
+
+2003-05-09  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdMZ.c (Tcl_ReturnObjCmd): The array of strings passed
+	to Tcl_GetIndexFromObj must be NULL terminated. [Bug 735186]
+	Thanks to Joe Mistachkin for spotting this.
+
+2003-05-07  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/trace.n: Fixed very strange language in the documentation for
+	'trace add execution'. [Bug 729821]
+
+	* generic/tclCmdMZ.c (Tcl_TraceObjCmd): Made error message for 'trace
+	info' more consistent with documentation. [Bug 706961]
+
+	* generic/tclDictObj.c (DictInfoCmd): Fixed memory leak caused by
+	confusion about string ownership.  [Bug 731706]
+
+2003-05-05  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:		Implementation of TIP 90, which
+	* generic/tclCmdAH.c:		extends the [catch] and [return]
+	* generic/tclCompCmds.c:	commands to enable creation of a
+	* generic/tclExecute.c:		proc that is a replacement for
+	* generic/tclInt.h:		[return]. [Patch 531640]
+	* generic/tclProc.c:
+	* generic/tclResult.c:
+	* tests/cmdAH.test:
+	* tests/cmdMZ.test:
+	* tests/error.test:
+	* tests/proc-old.test:
+
+	* library/tcltest/tcltest.tcl: The -returnCodes option to [test]
+	failed to recognize the symbolic name "ok" for return code 0.
+
+2003-05-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclBasic.c (Tcl_HideCommand): Fixed error message for
+	grammar and spelling.
+
+2003-04-28  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclDictObj.c (DictIncrCmd): Updated to reflect the behaviour
+	with wide increments of the normal [incr] command.
+	* generic/tclInt.decls: Added TclIncrWideVar2 to internal stub table
+	and cleaned up.
+	* tests/incr.test (incr-3.*):
+	* generic/tclVar.c (TclIncrWideVar2, TclPtrIncrWideVar):
+	* generic/tclExecute.c (TclExecuteByteCode):
+	* generic/tclCmdIL.c (Tcl_IncrObjCmd): Make [incr] work when trying to
+	increment by wide values. [Bug 728838]
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Default mode of
+	operation of [switch] is exact matching. [Bug 727563]
+
+2003-04-25  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:  Tcl_EvalObjv() failed to honor the
+	TCL_EVAL_GLOBAL flag when resolving command names. Tcl_EvalEx passed a
+	string rep including leading whitespace and comments to
+	TclEvalObjvInternal().
+
+2003-04-25  Andreas Kupries  <andreask@activestate.com>
+
+	* win/tclWinThrd.c: Applied SF patch #727271. This patch changes the
+	code to catch any errors returned by the windows functions handling
+	TLS ASAP instead of waiting to get some mysterious crash later on due
+	to bogus pointers. Patch provided by Joe Mistachkin.
+
+	This is a stop-gap measure to deal with the low number of ?TLS slots
+	provided by some of the variants of Windows (60-80).
+
+2003-04-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c: fix to bug reported privately by Jeff where,
+	for example, 'glob -path {[tcl]} *' gets confused by the leading
+	special character (which is escaped internally), and instead lists
+	files in '/'. Bug only occurs on Windows where '\' is also a directory
+	separator.
+	* tests/fileName.test: added test for the above bug.
+
+2003-04-22  Andreas Kupries  <andreask@activestate.com>
+
+	* The changes below fix SF bugs [593810], and [718045].
+
+	* generic/tclIO.c (Tcl_CutChannel, Tcl_SpliceChannel): Invoke
+	TclpCutSockChannel and TclpSpliceSockChannel.
+
+	* generic/tclInt.h: Declare TclpCutSockChannel and
+	TclpSpliceSockChannel.
+
+	* unix/tclUnixSock.c (TclpCutSockChannel, TclpSpliceSockChannel):
+	Dummy functions, on unix the sockets are _not_ handled specially.
+
+	* mac/tclMacSock.c (TclpCutSockChannel, TclpSpliceSockChannel):
+	* win/tclWinSock.c (TclpCutSockChannel, TclpSpliceSockChannel): New
+	functions to handle socket specific cut/splice operations: auto-init
+	of socket system for thread on splice, management of the module
+	internal per-thread list of sockets, management of association of
+	sockets with HWNDs for event notification.
+
+	* win/tclWinSock.c (NewSocketInfo): Extended initialization
+	assignments to cover all items of the structure. During debugging of
+	the new code mentioned above I found that two fileds could contain
+	bogus data.
+
+	* win/tclWinFile.c: Added #undef HAVE_NO_FINDEX_ENUMS before
+	definition because when compiling in debug mode the compiler complains
+	about a redefinition, and this warning is also treated as an error.
+
+2003-04-21  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:  When the return code of a test does
+	not meet expectations, report that as the reason for test failure, and
+	do not attempt to check the test result for correctness. [Bug 725253]
+
+2003-04-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinInt.h (VER_PLATFORM_WIN32_CE): conditionally define.
+	* win/tclWinInit.c: recognize Windows CE as a Win platform. This just
+	recognizes CE - full support will come later.
+
+	* win/configure: regen
+	* win/configure.in (SHELL): force it to /bin/sh as autoconf 2.5x
+	uses /bin/bash, which can fail to find exes in the path (ie: lib).
+
+	* generic/tclExecute.c (ExprCallMathFunc): remove incorrect
+	extraneous cast from Tcl_WideAsDouble.
+
+2003-04-18  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/open.n:		Moved serial port options from [fconfigure] to
+	* doc/fconfigure.n:	[open] as it is up to the creator of a channel
+				to describe the channel's special config
+				options. [Bug 679010]
+
+2003-04-16  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tcl.h:	Made changes so that the "wideInt" Tcl_ObjType
+	* generic/tclObj.c:	is defined on all platforms, even those where
+	* generic/tclPort.h:	TCL_WIDE_INT_IS_LONG is defined. Also made the
+	Tcl_Value struct have a wideValue field on all platforms. This is a
+	***POTENTIAL INCOMPATIBILITY*** for TCL_WIDE_INT_IS_LONG platforms
+	because that struct changes size. This is the same TIP 72
+	incompatibility that was seen on other platforms at the 8.4.0 release,
+	when this change should have happened as well. [Bug 713562]
+
+	* generic/tclInt.h:  New internal macros TclGetWide() and
+	TclGetLongFromWide() to deal with both forms of the "wideInt"
+	Tcl_ObjType, so that conditional TCL_WIDE_INT_IS_LONG code is confined
+	to the header file.
+
+	* generic/tclCmdAH.c:	Replaced most coding that was conditional
+	* generic/tclCmdIL.c:	on TCL_WIDE_INT_IS_LONG with code that
+	* generic/tclExecute.c: works across platforms, sometimes using
+	* generic/tclTest.c:	the new macros above to do it.
+	* generic/tclUtil.c:
+	* generic/tclVar.c:
+
+2003-04-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/socket.n: Added a paragraph to remind people to specify their
+	encodings when using sockets. [Bug 630621]
+
+2003-04-16  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/CrtMathFnc.3: Functions also have to deal with wide ints, but
+	this was not documented. [Bug 709720]
+
+2003-04-16  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: removed undesired 'static' for function which
+	is now shared (previously it was duplicated).
+
+2003-04-15  Joe English  <jenglish@users.sourceforge.net>
+
+	* doc/namespace.n: added example section "SCOPED SCRIPTS", supplied by
+	Kevin Kenny. [Bug 219183]
+
+2003-04-15  Kevin Kenny  <kennykb@acm.org>
+
+	* makefile.vc: Updated makefile.vc to conform with Mo DeJong's changes
+	to Makefile.in and tclWinPipe.c on 2003-04-14. Now passes TCL_PIPE_DLL
+	in place of TCL_DBGX.
+	* win/tclWinTime.c: Corrected use of types to make compilation
+	compatible with VC++5.
+
+2003-04-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: finished check-in from yesterday, removing
+	duplicate function definition.
+
+2003-04-14  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclClock.c:	Corrected compiler warnings.
+	* generic/tclTest.c:
+
+2003-04-14  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/Makefile.in: Don't define TCL_DBGX symbol for every compile.
+	Instead, define TCL_PIPE_DLL only when compiling tclWinPipe.c. This
+	will break other build systems, so they will need to remove the
+	TCL_DBGX define and replace it with a define for TCL_PIPE_DLL.
+	* win/tclWinPipe.c (TclpCreateProcess): Remove PREFIX_IDENT and
+	DEBUG_IDENT from top of file. Use TCL_PIPE_DLL passed in from build
+	env instead of trying to construct the dll name from already defined
+	symbols. This approach is more flexible and better in the long run.
+
+2003-04-14  Kevin Kenny  <kennykb@acm.org>
+
+	* win/tclWinFile.c: added conditionals to restore compilation on
+	VC++6, which was broken by recent changes.
+
+2003-04-14  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c:
+	* generic/tclPathObj.c:
+	* generic/tclFileSystem.h: overlooked one function which was
+	duplicated, so this is now shared between modules.
+	* win/tclWinFile.c: allow this file to compile with VC++ 5.2 again
+	since Mingw build fixes broke that.
+
+2003-04-13  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Add check for FINDEX_INFO_LEVELS from winbase.h,
+	known to be a problem in VC++ 5.2. Define HAVE_NO_FINDEX_ENUMS if the
+	define does not exist.
+	* win/tclWinFile.c: Put declarations for FINDEX_INFO_LEVELS and
+	FINDEX_SEARCH_OPS inside a check for HAVE_NO_FINDEX_ENUMS so that
+	these are not declared twice. This fixes the Mingw build.
+	* win/tclWinTime.c: Rework the init of timeInfo so that the number or
+	initializers matches the declaration. This was broken under Mingw. Add
+	cast to avoid compile warning when calling the AccumulateSample
+	function.
+
+2003-04-12  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/Makefile.in (GENERIC_OBJS): add missing tclPathObj.c
+
+2003-04-12  Kevin Kenny  <kennykb@acm.org>
+
+	* doc/clock.n:
+	* generic/tclClock.c (Tcl_ClockObjCmd):
+	* tests/clock.test: Implementation of TIP #124. Also renumbered test
+	cases to avoid duplicates. [Bug 710310]
+	* tests/winTime.test:
+	* win/tclWinTest.c (TestwinclockCmd, TestwinsleepCmd):
+	* win/tclWinTime.c (Tcl_WinTime, UpdateTimeEachSecond,
+	(ResetCounterSamples, AccumulateSample, SAMPLES, TimeInfo): Made
+	substantial changes to the phase-locked loop (replaced an IIR filter
+	with an FIR one) in a quest for improved loop stability (Bug not
+	logged at SF, but cited in private communication from Jeff Hobbs).
+
+2003-04-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd,STR_IS_INT):  Corrected
+	inconsistent results of [string is integer] observed on systems where
+	sizeof(long) != sizeof(int). [Bug 718878]
+	* tests/string.test: Added tests for Bug 718878.
+	* doc/string.n: Clarified that [string is integer] accepts 32-bit
+	integers.
+
+2003-04-11  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c (UpdateInterest): When dropping interest in
+	TCL_READABLE now dropping interest in TCL_EXCEPTION too. This fixes a
+	bug where Expect detects eof on a file prematurely on solaris 2.6 and
+	higher. A much more complete explanation is in the code itself (40
+	lines of comments for a one-line change :)
+
+2003-04-11  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/cmdAH.test: fix test suite problem if /home is a symlink. [Bug
+	703264]
+	* generic/tclIOUtil.c: fix bad error message with 'cd ""'. [Bug
+	704917]
+	* win/tclWinFile.c, win/tclWin32Dll.c:
+	* win/tclWinInt.h: allow Tcl to differentiate between reparse points
+	which are symlinks and mounted volumes, and correctly handle the
+	latter. This involves some elaborate code to find the actual drive
+	letter (if possible) corresponding to a mounted volume. [Bug 697862]
+	* tests/fileSystem.test: add constraints to stop tests running in
+	ordinary tcl interpreter. [Bug 705675]
+
+	* generic/tclIOUtil.c:
+	* generic/tclPathObj.c: (new file)
+	* generic/tclFileSystem.h: (new file)
+	* win/makefile.vc:
+	Split path object handling out of the virtual filesystem layer, into
+	tclPathObj.c. This refactoring cleans up the internal filesystem code,
+	and will make any future optimisations and forthcoming better
+	thread-safety much easier.
+
+	* generic/tclTest.c:
+	* tests/reg.test: added some 'knownBug' tests for problems in Tcl's
+	regexp code with the TCL_REG_CAN_MATCH flag (see Bug 703709). Code too
+	impenetrable to fix right now, but a fix is needed for tip113 to work
+	correctly.
+
+	* tests/fCmd.test
+	* win/tclWinFile.c: added some filesystem optimisation to the 'glob'
+	implementation, and some new tests.
+
+	* generic/tclCmdMZ.c: fix typo in comment
+
+	* tests/winFile.test:
+	* tests/ioUtil.test:
+	* tests/unixFCmd.test: renumbered tests with duplicate numbers. [Bug
+	710361]
+
+2003-04-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/binary.n: Fixed typo in [binary format w] desc. [Bug 718543]
+
+2003-04-08  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdAH.c (Tcl_ErrorObjCmd): Strings are only empty if
+	they have zero length, not if their first byte is zero, so fix test
+	guarding Tcl_AddObjErrorInfo to take this into account. [Bug
+	reported by Don Porter; no bug-id.]
+
+2003-04-07  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileIfCmd):  Corrected string limits of
+	arguments interpolated in error messages. [Bug 711371]
+
+	* generic/tclCmdMZ.c (TraceExecutionProc):  Added missing
+	Tcl_DiscardResult() call to avoid memory leak.
+
+2003-04-07  Donal K. Fellows  <zzcgudf@ernie.mvc.mcc.ac.uk>
+
+	* generic/tclDictObj.c (Tcl_DictObjCmd): Stopped compilers from
+	moaning about switch fall-through.  [Bug 716327]
+	(DictFilterCmd): Yet more warning killing, this time reported by
+	Miguel Sofer by private chat.
+
+2003-04-07  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/dict.test (dict-2.6):
+	* generic/tclDictObj.c (Tcl_NewDictObj, Tcl_DbNewDictObj): Oops!
+	Failed to fully initialise the Dict structure.
+	(DictIncrCmd): Moved valueAlreadyInDictionary label to stop compiler
+	complaints. [Bug 715751]
+
+	* generic/tclDictObj.c (DictIncrCmd): Followed style in the rest of
+	the core by commenting out wide-specific operations on platforms where
+	wides are longs, and used longs more thoroughly than ints through
+	[dict incr] anyway to forestall further bugs.
+	* generic/tclObj.c: Made sure there's always a tclWideIntType
+	implementation available, not that it is always useful. [Bug 713562]
+
+2003-04-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclDictObj.c: Removed commented out notes on declarations to
+	be moved to elsewhere in the Tcl core.
+
+	* generic/tclInt.h:	Final stages of plumbing in.
+	* generic/tclBasic.c:
+	* generic/tclObj.c (TclInitObjSubsystem):
+
+	* unix/Makefile.in, win/Makefile.in, win/makefile.[bv]c: Build support.
+	* generic/tcl.decls: Added dict public API to stubs table.
+	* generic/tcl.h (Tcl_DictSearch): Added declaration of structure to
+	allow user code to iterate over dictionaries.
+
+	* doc/DictObj.3:	New files containing dictionary implementation
+	* doc/dict.n:		documentation and tests as as mandated by TIP
+	* generic/tclDictObj.c: #111.
+	* tests/dict.test:
+
+2003-04-03  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure:
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Don't set TCL_LIBS if it is already
+	set to support use of TCL_LIBS var from tclConfig.sh in the Tk
+	configure script.
+
+2003-04-03  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/Makefile.in: Don't subst MATH_LIBS, LIBS, and DL_LIBS
+	separately. Instead, just subst TCL_LIBS since it includes the
+	others.
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS, SC_TCL_LINK_LIBS): Set and subst
+	TCL_LIBS in SC_CONFIG_CFLAGS instead of SC_TCL_LINK_LIBS. Don't subst
+	MATH_LIBS since it is now covered by TCL_LIBS.
+	* unix/tclConfig.sh.in: Use TCL_LIBS instead of DL_LIBS, LIBS, and
+	MATH_LIBS.
+	* unix/dltest/Makefile.in: Ditto.
+
+2003-04-03  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileReturnCmd):  Now that [return]
+	compiles to INST_RETURN, it is safe to compile even outside a proc.
+
+2003-04-02  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Set stub lib flag based on new LIBFLAGSUFFIX
+	variable.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Set new LIBFLAGSUFFIX that works like
+	LIBSUFFIX, it is used when creating library names. The previous
+	implementation would generate -ltclstub85 instead of -ltclstub85s when
+	configured with --disable-shared.
+
+2003-04-02  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclParse.c (TclSubstTokens):  Moved declaration of
+	utfCharBytes to beginning of procedure so that it does not go out of
+	scope (get free()d) while append is still pointing to it. [Bugs
+	703167, 713754]
+
+2003-04-01  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Check for inet_ntoa in -lbind inside
+	the BeOS block since doing it later broke the build under SuSE 7.3.
+	[Bug 713128]
+
+2003-04-01  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/README:  Direct [source] of *.test files is no longer
+	recommended. The tests/*.test files should only be evaluated under the
+	control of the [runAllTests] command in tests/all.tcl.
+
+	* generic/tclExecute.c (INST_RETURN):  Bytecompiled [return] failed to
+	reset iPtr->returnCode, causing tests parse-18.17 and parse-18.21 to
+	fail strangely.
+	* tests/parse.test (parse-18.21):  Corrected now functioning test.
+	Added further coverage tests.
+
+2003-03-31  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/parse.test (parse-18.*):  Coverage tests for the new
+	implementation of Tcl_SubstObj(). Note that tests parse-18.17 and
+	parse-18.21 demonstrate some bugs left to fix in the current code.
+
+2003-03-27  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Use -Wl,--export-dynamic instead of
+	-rdynamic for LDFLAGS. The -rdynamic is not documented so it seems
+	better to pass the --export-dynamic flag to the linker. [Patch 573395]
+
+2003-03-27  Miguel Sofer <msofer@users.sf.net>
+
+	* tests/encoding.test:
+	* tests/proc-old.test:
+	* tests/set-old.test: Altered test numers to eliminate duplicates,
+	[Bugs 710313, 710320, 710352]
+
+2003-03-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/parseOld.test:	Altered test numers to eliminate duplicates.
+	* tests/parse.test:	[Bugs 710365, 710369]
+	* tests/expr-old.test:
+	* tests/expr.test:
+
+	* tests/utf.test:	Altered test numers to eliminate duplicates.
+	* tests/trace.test:	[Bugs 710322, 710327, 710349, 710363]
+	* tests/lsearch.test:
+	* tests/list.test:
+	* tests/info.test:
+	* tests/incr-old.test:
+	* tests/if-old.test:
+	* tests/format.test:
+	* tests/foreach.test:
+
+2003-03-26  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS, SC_TCL_LINK_LIBS): Add BeOS system to
+	SC_CONFIG_CFLAGS. Check for inet_ntoa in -lbind, needed for BeOS.
+
+2003-03-26  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:
+	* library/tcltest/tcltest.tcl:  Added reporting during [configure
+	-debug 1] operations to warn about multiple uses of the same test
+	name. [FRQ 576693]
+
+	* tests/msgcat.test (msgcat-2.2.1): changed test name to avoid
+	duplication. [Bug 710356]
+
+	* unix/dltest/pkg?.c:  Changed all Tcl_InitStubs calls to pass
+	argument exact = 0, so that rebuilds are not required when Tcl
+	bumps to a new version.  [Bug 701926]
+
+2003-03-24  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c:
+	* tests/var.test: fixing ObjMakeUpvar's lookup algorithm for the
+	created local variable. [Bug 631741] (Chris Darroch) and [Bug 696893]
+	(David Hilker)
+
+2003-03-24  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* library/dde/pkgIndex.tcl: bumped version to 1.2.2 in tclWinDde.c,
+	now adding here too.
+
+2003-03-22  Kevin Kenny  <kennykb@acm.org>
+
+	* library/dde/pkgIndex.tcl:
+	* library/reg/pkgIndex.tcl: Fixed a bug where [package require dde]
+	or [package require registry] attempted to load the release version
+	of the DLL into a debug build. [Bug 708218] Thanks to Joe Mistachkin
+	for the patch.
+	* win/makefile.vc: Added quoting around the script name in the 'test'
+	target; Joe Mistachkin insists that he has a configuration that fails
+	to launch tcltest without it, and it appears harmless otherwise.
+
+2003-03-22  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* win/tclWinDde.c: Make dde services conform the the documentation
+	such that giving only a topic name really returns all services with
+	that topic. [Bug 219155]
+	Prevent hangup caused by dde server applications failing to process
+	messages. [Bug 707822]
+	* tests/winDde.test: Corrected labels and added a test for search by
+	topic name.
+
+2003-03-20  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclInt.h (tclOriginalNotifier):
+	* generic/tclStubInit.c (tclOriginalNotifier):
+	* mac/tclMacNotify.c (Tcl_SetTimer,Tcl_WaitForEvent):
+	* unix/tclUnixNotfy.c (Tcl_SetTimer,Tcl_WaitForEvent,
+	(Tcl_CreateFileHandler,Tcl_DeleteFileHandler):
+	* win/tclWinNotify.c (Tcl_SetTimer,Tcl_WaitForEvent):  Some linkers
+	apparently use a different representation for a pointer to a function
+	within the same compilation unit and a pointer to a function in a
+	different compilation unit. This causes checks like those in the
+	original notifier procedures to fall into infinite loops. The fix is
+	to store pointers to the original notifier procedures in a struct
+	defined in the same compilation unit as the stubs tables, and compare
+	against those values. [Bug 707174]
+
+	* generic/tclInt.h:  Removed definition of ParseValue struct that is
+	no longer used.
+
+2003-03-19  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c:
+	* tests/compile.test: bad command count on TCL_OUT_LINE_COMPILE.
+	[Bug 705406] (Don Porter)
+
+2003-03-19  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/auto.tcl:		Replaced [regexp] and [regsub] with
+	* library/history.tcl:		[string map] where possible.  Thanks
+	* library/ldAout.tcl:		to David Welton. [Bugs 667456,667558]
+	* library/safe.tcl:		Bumped to http 2.4.3, opt 0.4.5, and
+	* library/http/http.tcl:	tcltest 2.2.3.
+	* library/http/pkgIndex.tcl:
+	* library/opt/optparse.tcl:
+	* library/opt/pkgIndex.tcl:
+	* library/tcltest/tcltest.tcl:
+	* library/tcltest/pkgIndex.tcl:
+	* tools/genStubs.tcl:
+	* tools/tcltk-man2html.tcl:
+	* unix/mkLinks.tcl:
+
+	* doc/Eval.3 (Tcl_EvalObjEx):			Corrected CONST and
+	* doc/ParseCmd.3 (Tcl_EvalTokensStandard):	return type errors in
+	documentation. [Bug 683994]
+
+	* generic/tclCompCmds.c (TclCompileReturnCmd):  Alternative fix for
+	* generic/tclCompile.c (INST_RETURN):	[Bug 633204] that uses a new
+	* generic/tclCompile.h (INST_RETURN):	bytecode INST_RETURN to
+	* generic/tclExecute.c (INST_RETURN):	properly bytecode the [return]
+	command to something that returns TCL_RETURN.
+
+2003-03-18  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Don't run the AC_CYGWIN macro since it uses
+	AC_CANONICAL_HOST under autoconf 2.5X. Just check to see if __CYGWIN__
+	is defined by the compiler and set the ac_cv_cygwin variable based on
+	that. [Bug 705912]
+
+2003-03-18  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* tests/registry.test: Changed the conditionals to avoid an abort if
+	[testlocale] is missing, as when running the test in tclsh rather than
+	tcltest. [Bug 705677]
+
+2003-03-18  Daniel Steffen  <das@users.sourceforge.net>
+
+	* tools/tcltk-man2html.tcl: added support for building 'make html'
+	from inside distribution directories named with 8.x.x version numbers.
+	tcltk-man2html now uses the latest tcl8.x.x resp. tk8.x.x directories
+	found inside its --srcdir argument.
+
+2003-03-17  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/format.test: Renumber tests, a bunch of tests all had the same
+	id.
+
+2003-03-17  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/lsearch.n:	Altered documentation of -ascii options so
+	* doc/lsort.n:		they don't specify that they operate on ASCII
+				strings, which they never did anyway. [Bug
+				703807]
+
+2003-03-14  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Only add the modifier that
+	indicates we've got a wide int when we're formatting in an integer
+	style.  Stops some libc's from going mad. [Bug 702622] Also tidied
+	whitespace.
+
+2003-03-13  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tcl.m4 (SC_WITH_TCL): Port version number fix that was made in
+	tk instead of tcl sources.
+
+2003-03-13  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	Require autoconf 2.57 or newer, see TIP 34 for a detailed explanation
+	of why this is good. This will no doubt break the build on some
+	platforms, let the flaming begin.
+
+	* tools/configure: Regen with autoconf 2.57.
+	* tools/configure.in: Require autoconf 2.57.
+	* unix/configure: Regen with autoconf 2.57.
+	* unix/configure.in: Require autoconf 2.57.
+	Apply AC_LIBOBJ changes from patch 529884.
+	* unix/tcl.m4: Ditto.
+	* win/configure: Regen with autoconf 2.57.
+	* win/configure.in: Require autoconf 2.57.
+	Don't subst LIBOBJS since this happens by default, this avoids an
+	autoconf error.
+
+2003-03-12  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_EvalTokensStandard):
+	* generic/tclCmdMZ.c (Tcl_SubstObj):
+	* generic/tclCompCmds.c (TclCompileSwitchCmd):
+	* generic/tclCompExpr.c (CompileSubExpr):
+	* generic/tclCompile.c (TclSetByteCodeFromAny,TclCompileScript,
+	(TclCompileTokens,TclCompileCmdWord):
+	* generic/tclCompile.h (TclCompileScript):
+	* generic/tclExecute.c (TclCompEvalObj):
+	* generic/tclInt.h (Interp,TCL_BRACKET_TERM,TclSubstTokens):
+	* generic/tclParse.c (ParseTokens,Tcl_SubstObj,TclSubstTokens):
+	* tests/subst.test (2.4, 8.7, 8.8, 11.4, 11.5):
+	Substantial refactoring of Tcl_SubstObj to make use of the same
+	parsing and substitution procedures as normal script evaluation.
+	Tcl_SubstObj() moved to tclParse.c. New routine TclSubstTokens()
+	created in tclParse.c which implements all substantial functioning of
+	Tcl_EvalTokensStandard(). TclCompileScript() loses its "nested"
+	argument, the Tcl_Interp struct loses its termOffset field and the
+	TCL_BRACKET_TERM flag in the evalFlags field, all of which were only
+	used (indirectly) by Tcl_SubstObj(). Tests subst-8.7,8.8,11.4,11.5
+	modified to accomodate the only behavior change: reporting of parse
+	errors now takes precedence over [return] and [continue] exceptions.
+	All other behavior should remain compatible. [RFE 536831,684982] [Bug
+	685106]
+
+	* generic/tcl.h:        Removed TCL_PREFIX_IDENT and TCL_DEBUG_IDENT
+	* win/tclWinPipe.c:     from tcl.h -- they are not part of Tcl's
+	public interface.  Put them in win/tclWinPipe.c where they are used.
+
+	* generic/tclInterp.c (Tcl_InterpObjCmd):       Corrected and added
+	* tests/interp.test (interp-2.13):              test for option
+	parsing beyond objc for [interp create --]. Thanks to Marco Maggi.
+	[Bug 702383]
+
+2003-03-11  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* win/makefile.vc: Added two missing uses of $(DBGX) so that
+	tclpip8x.dll loads without panicking on Win9x.
+
+2003-03-09  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* generic/tclTest.c (TestChannelCmd): Removed an unused local variable
+	that caused compilation problems on some platforms.
+
+2003-03-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:  Added missing "-body" to example. Thanks to Helmut
+	Giese. [Bug 700011]
+
+2003-03-07  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/io.test:
+	* tests/ioCmd.test: Define a fcopy constraint and add it to the
+	constraint list of any test that depends on the fcopy command. This is
+	only useful to Jacl which does not support fcopy.
+
+2003-03-07  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/encoding.test: Name temp files *.tcltestout instead of *.out
+	so that when they are removed later, we don't accidently toast any
+	files named *.out that the user has created in the build directory.
+
+2003-03-07  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCmdAH.c (Tcl_FileObjCmd): Fix the setting of a file's
+	mtime and atime on 64-bit platforms. [Bug 698146]
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/io.test: Doh! Undo accidental commenting out of a couple of
+	tests.
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/io.test: Define a fileevent constraint and add it to the
+	constraint list of any test that depends on the fileevent command.
+	This is only useful to Jacl which does not support fileevent.
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/io.test: Define an openpipe constraint and add it to the
+	constraint list of any test that creates a pipe using the open
+	command. This is only useful to Jacl which does not support pipes.
+
+2003-03-06  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/TclUtf.c (Tcl_UniCharNcasecmp):       Corrected failure to
+	* tests/utf.test (utf-25.*):    properly compare Unicode strings of
+	different case in a case insensitive manner.  [Bug 699042]
+
+2003-03-06  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd):
+	Replaced a non-portable 'bzero' with a portable 'memset'. [Bug 698442]
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_Seek, Tcl_OutputBuffered): If there is data
+	buffered in the statePtr->curOutPtr member then set the BUFFER_READY
+	flag in Tcl_Seek. This is needed so that the next call to FlushChannel
+	will write any buffered bytes before doing the seek. The existing code
+	would set the BUFFER_READY flag inside the Tcl_OutputBuffered
+	function. This was a programming error made when Tcl_OutputBuffered
+	was originally created in CVS revision 1.35. The setting of the
+	BUFFER_READY flag should not have been included in the
+	Tcl_OutputBuffered function.
+	* generic/tclTest.c (TestChannelCmd): Use the Tcl_InputBuffered and
+	Tcl_OutputBuffered util methods to query the amount of buffered input
+	and output.
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_Flush): Compare the nextAdded member of the
+	ChannelBuffer to the nextRemoved member to determine if any output has
+	been buffered. The previous check against the value 0 seems to have
+	just been a coding error. See other methods like Tcl_OutputBuffered
+	for examples where nextAdded is compared to nextRemoved to find the
+	number of bytes buffered.
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_GetsObj): Check that the eol pointer has not
+	gone past the end of the string when in auto translation mode and the
+	INPUT_SAW_CR flag is set. The previous code worked because the end of
+	string value \0 was being compared to \n, this patch just skips that
+	pointless check.
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (WriteBytes, WriteChars, Tcl_GetsObj, ReadBytes):
+	Rework calls to TranslateOutputEOL to make it clear that a boolean
+	value is being returned. Add some comments in an effort to make the
+	code more clear. This patch makes no functional changes.
+
+2003-03-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_SetChannelOption): Invoke the
+	Tcl_SetChannelBufferSize method as a result of changing the
+	-buffersize option to fconfigure. The previous implementation used
+	some inlined code that reset the buffer size to the default size
+	instead of ignoring the request as implemented in
+	Tcl_SetChannelBufferSize.
+	* tests/io.test: Update test case so that it actually checks the
+	implementation of Tcl_SetChannelBufferSize.
+
+2003-03-05  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/rules.vc: updated default tcl version to 8.5.
+
+2003-03-05  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): First attempt at a
+	bytecode-compiled switch command. It only handles the most common case
+	of switching, but that should be enough for this to speed up a lot of
+	people's code. It is expected that the speed gains come from two
+	things: better handling of the switch itself, and integrated
+	compilation of the arms instead of embedding separate bytecode
+	sequences (i.e. better local variable handling.)
+	* tests/switch.test (switch-10.*): Tests of both uncompiled and
+	compiled switch behaviour. [Patch #644819]
+
+	* generic/tclCompile.h (TclFixupForwardJumpToHere): Additional macro
+	to make the most common kind of jump fixup a bit easier.
+
+2003-03-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* README:				Bumped version number of
+	* generic/tcl.h:			Tcl to 8.5a0.
+	* library/init.tcl:
+	* mac/README:
+	* macosx/Tcl.pbproj/project.pbxproj:
+	* tests/basic.test:
+	* tools/configure.in:
+	* tools/tcl.hpj.in:
+	* tools/tcl.wse.in:
+	* unix/configure.in:
+	* unix/tcl.spec:
+	* win/README:
+	* win/README.binary:
+	* win/configure.in:
+	* win/makefile.bc:
+	* win/makefile.vc:
+	* win/tcl.m4:
+
+	* tools/configure:	autoconf
+	* unix/configure:
+	* win/configure:
+
+2003-03-03  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	*** 8.4.2 TAGGED FOR RELEASE ***
+
+2003-03-03  Daniel Steffen  <das@users.sourceforge.net>
+
+	Mac OS Classic specific fixes:
+	* generic/tclIOUtil.c (TclNewFSPathObj): on TCL_PLATFORM_MAC, skip
+	potential directory separator at the beginning of addStrRep.
+	* mac/tclMacChan.c (OpenFileChannel, CommonWatch): followup fixes to
+	cut and splice implementation for file channels.
+	* mac/tclMacFile.c (TclpUtime): pass native path to utime().
+	* mac/tclMacFile.c (TclpObjLink): correctly implemented creation of
+	alias files via new static proc CreateAliasFile().
+	* mac/tclMacPort.h: define S_ISLNK macro to fix stat'ing of links.
+	* mac/tclMacUtil.c (FSpLocationFromPathAlias): fix to enable stat'ing
+	of broken links.
+
+2003-03-03  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* win/Makefile.vc: corrected bug introduced by 'g' for debug builds.
+
+2003-03-03  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/dde/pkgIndex.tcl:	dde bumped to version 1.2.1 for
+	* win/tclWinDde.c:		bundled release with Tcl 8.4.2
+
+	* library/reg/pkgIndex.tcl:	registry bumped to version 1.1.1 for
+	* win/tclWinReg.c:		bundled release with Tcl 8.4.2
+
+	* library/opt/pkgIndex.tcl:	updated package index to version 0.4.4
+
+2003-02-28  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/configure:
+	* win/configure.in: check for 'g' for debug build type, not 'd'.
+	* win/rules.vc (DBGX): correct to use 'g' for nmake win makefile to
+	match the cygwin makefile for debug builds. [Bug 635107]
+
+2003-02-28  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/file.n: subcommand is 'file volumes' not 'file volume'
+
+2003-02-27  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclIOUtil.c (MakeFsPathFromRelative): removed dead code
+	check of typePtr (darley).
+
+	* tests/winTime.test: added note about PCI hardware dependency issues
+	with high performance clock.
+
+2003-02-27  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/lsearch.test (lsearch-10.7):
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Stopped -start option from
+	causing an option when used with an empty list. [Bug 694232]
+
+2003-02-26  Chengye Mao <chengye.geo@yahoo.com>
+
+	* win/tclWinInit.c: fixed a bug in TclpSetVariables by initializing
+	dwUserNameLen with the sizeof(szUserName) before calling GetUserName.
+	Don't know if this bug has been recorded: it caused crash in starting
+	Tcl or wish in Windows.
+
+2003-02-26  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclCmdMZ.c (TraceCommandProc): Fix mem leak when deleting a
+	command that had trace on it. [Bug 693564] (sofer)
+
+2003-02-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/pkgMkIndex.n:	Modified [pkg_mkIndex] to use -nocase matching
+	* library/package.tcl:	of -load patterns, to better accomodate common
+	user errors due to confusion between [package names] names and [info
+	loaded] names.
+
+2003-02-25  Andreas Kupries  <andreask@pliers.activestate.com>
+
+	* tests/pid.test: See below [Bug 678412].
+	* tests/io.test: Made more robust against spaces in paths [Bug 678400]
+
+2003-02-25  Miguel Sofer <msofer@users.sf.net>
+
+	* tests/execute.test: cleaning up testobj's at the end, to avoid
+	  leak warning by valgrind.
+
+2003-02-22  Zoran Vasiljevic  <zoran@archiwrae.com>
+
+	* generic/tclEvent.c (Tcl_FinalizeThread): Fix [Bug 571002]
+
+2003-02-21  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* tests/binary.test (binary-44.[34]):
+	* generic/tclBinary.c (ScanNumber): Fixed problem with unwanted
+	sign-bit propagation when scanning wide ints. [Bug 690774]
+
+2003-02-21  Daniel Steffen  <das@users.sourceforge.net>
+
+	* mac/tclMacChan.c (TclpCutFileChannel, TclpSpliceFileChannel):
+	Implemented missing cut and splice procs for file channels.
+
+2003-02-21  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/package.tcl (tclPkgUnknown):  Minor performance tweaks to
+	reduce the number of [file] invocations. Meant to improve startup
+	times, at least a little bit. [Patch 687906]
+
+2003-02-20  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tcl.m4:
+	* unix/tclUnixPipe.c: (macosx) use vfork() instead of fork() to create
+	new processes, as recommended by Apple (vfork can be up to 100 times
+	faster thank fork on macosx).
+	* unix/configure: regen.
+
+2003-02-20  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclEncoding.c (LoadTableEncoding):
+	* library/encoding/cp932.enc:      Correct jis round-trip encoding
+	* library/encoding/euc-jp.enc:     by adding 'R' type to .enc files.
+	* library/encoding/iso2022-jp.enc: [Patch 689341] (koboyasi, taguchi)
+	* library/encoding/jis0208.enc:
+	* library/encoding/shiftjis.enc:
+	* tests/encoding.test:
+
+	* unix/tclUnixChan.c (Tcl_MakeTcpClientChannel): add
+	MakeTcpClientChannelMode that takes actual mode flags to avoid hang on
+	OS X (may be OS X bug, but patch works x-plat). [Bug 689835] (steffen)
+
+2003-02-20  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/regsub.n: Typo fix [Bug 688943]
+
+2003-02-19  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixThrd.c (TclpReaddir):
+	* unix/tclUnixPort.h: update to Bug 689100 patch to ensure that there
+	is a defined value of MAXNAMLEN (aka NAME_MAX in POSIX) and that we
+	have some buffer allocated.
+
+2003-02-19  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclStringObj.c: restored Tcl_SetObjLength() side-effect of
+	always invalidating unicode rep (if the obj has a string rep). Added
+	hasUnicode flag to String struct, allows decoupling of validity of
+	unicode rep from buffer size allocated to it (improves memory
+	allocation efficiency). [Bugs 686782, 671138, 635200]
+
+	* macosx/Tcl.pbproj/project.pbxproj:
+	* macosx/Makefile: reworked embedded build to no longer require
+	relinking but to use install_name_tool instead to change the
+	install_names for embedded frameworks. [Bug 644510]
+
+	* macosx/Tcl.pbproj/project.pbxproj: preserve mod dates when running
+	'make install' to build framework (avoids bogus rebuilds of dependent
+	frameworks because tcl headers appear changed).
+
+	* tests/ioCmd.test (iocmd-1.8): fix failure when system encoding is
+	utf-8: use iso8859-1 encoding explicitly.
+
+2003-02-18  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclCompileExprWords): remove unused variable
+	"range" [Bug 664743]
+	* generic/tclExecute.c (ExprSrandFunc): remove unused variable
+	"result" [Bug 664743]
+	* generic/tclStringObj.c (UpdateStringOfString): remove unused
+	variable "length" [Bug 664751]
+	* tests/execute.test (execute-7.30): fix for [Bug 664775]
+
+2003-02-18  Andreas Kupries  <andreask@activestate.com>
+
+	* unix/tcl.m4: [Bug #651811] Added definition of _XOPEN_SOURCE and
+	linkage of 'xnet' library to HP 11 branch. This kills a lot of
+	socket-related failures in the testsuite when Tcl was compiled in 64
+	bit mode (both PA-RISC 2.0W, and IA 64).
+
+	* unix/configure: Regenerated.
+
+2003-02-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclIO.c (HaveVersion): correctly decl static
+
+	* unix/tclUnixThrd.c (TclpReaddir): reduce size of name string in tsd
+	to NAME_MAX instead of PATH_MAX. [Bug 689100] (waters)
+
+2003-02-18  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_ENABLE_THREADS): Make sure -lpthread gets passed on
+	the link line when checking for the pthread_attr_setstacksize symbol.
+
+2003-02-18  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclTest.c: cleanup of new 'simplefs' test code, and better
+	documentation.
+
+2003-02-17  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (TclRenameCommand): fixing error in previous
+	commit.
+
+2003-02-17  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclExecute.c (TclExecuteByteCode INST_STR_MATCH):
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd STR_MATCH):
+	* generic/tclUtf.c (TclUniCharMatch):
+	* generic/tclInt.decls:  add private TclUniCharMatch function that
+	* generic/tclIntDecls.h: does string match on counted unicode
+	* generic/tclStubInit.c: strings. Tcl_UniCharCaseMatch has the failing
+	* tests/string.test:     that it can't handle strings or patterns with
+	* tests/stringComp.test: embedded NULLs. Added tests that actually try
+	strings/pats with NULLs. TclUniCharMatch should be TIPed and made
+	public in the next minor version rev.
+
+2003-02-17  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (TclRenameCommand): 'oldFullName' object was not
+	being freed on all function exits, causing a memory leak. [Bug 684756]
+
+2003-02-17  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_GetsObj): Minor change so that eol is only
+	assigned at the top of the TCL_TRANSLATE_AUTO case block. The other
+	cases assign eol so this does not change any functionality.
+
+2003-02-17  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* tests/notify.test: Removed Windows line terminators. [Bug 687913].
+
+2003-02-15  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_EvalEx):
+	* generic/tclCompExpr.c (CompileSubExpr):
+	* generic/tclCompile.c (TclCompileScript):
+	* generic/tclParse.c (Tcl_ParseCommand, ParseTokens):
+	* generic/tclParseExpr.c (ParsePrimaryExpr):
+	* tests/basic.test (47.1):
+	* tests/main.test (3.4):
+	* tests/misc.test (1.2):
+	* tests/parse.test (6.18):
+	* tests/parseExpr.test (15.35):
+	* tests/subst.test (8.6): Don Porter's fix for bad parsing of nested
+	scripts. [Bug 681841]
+
+2003-02-15  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* tests/notify.test (new-file):
+	* generic/tclTest.c (TclTest_Init, EventtestObjCmd, EventtestProc,
+	(EventTestDeleteProc):
+	* generic/tclNotify.c (Tcl_DeleteEvents): Fixed Tcl_DeleteEvents not
+	to get a pointer smash when deleting the last event in the queue.
+	Added test code in 'tcltest' and a new file of test cases
+	'notify.test' to exercise this functionality; several of the new test
+	cases fail for the original code and pass for the corrected code. [Bug
+	673714]
+
+	* unix/tclUnixTest.c (TestfilehandlerCmd): Corrected a couple of typos
+	in error messages. [Bug 596027]
+
+2003-02-14  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* README:		Bumped to version 8.4.2.
+	* generic/tcl.h:
+	* tools/tcl.wse.in:
+	* unix/configure:
+	* unix/configure.in:
+	* unix/tcl.m4:
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/configure:
+	* win/configure.in:
+	* macosx/Tcl.pbproj/project.pbxproj:
+
+	* generic/tclStringObj.c (Tcl_GetCharLength): perf tweak
+
+	* unix/tcl.m4: correct HP-UX ia64 --enable-64bit build flags
+
+2003-02-14  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* win/tclWinTime.c: Added code to test and compensate for forward
+	leaps of the performance counter. See the MSDN Knowledge Base article
+	Q274323 for the hardware problem that makes this necessary on certain
+	machines.
+	* tests/winTime.test: Revised winTime-2.1 - it had a tolerance of
+	thousands of seconds, rather than milliseconds. (What's six orders of
+	magnitude among friends?) Both the above changes are triggered by a
+	problem reported at:
+	http://aspn.activestate.com/ASPN/Mail/Message/ActiveTcl/1536811
+	although the developers find it difficult to believe that it accounts
+	for the observed behavior and suspect a fault in the RTC chip.
+
+2003-02-13  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* win/tclWinInit.c: Added conversion from the system encoding to
+	tcl_platform(user), so that it works with non-ASCII7 user names. [Bug
+	685926]
+
+	* doc/tclsh.1: Added language to describe the handling of the
+	end-of-file character \u001a embedded in a script file. [Bug 685485]
+
+2003-02-11  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fileName.test:
+	* unix/tclUnixFile.c: fix for [Bug 685445] when using 'glob -l' on
+	broken symbolic links. Added two new tests for this bug.
+
+2003-02-11  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* tests/http.test: Corrected a problem where http-4.14 would fail when
+	run in an environment with a proxy server. Replaced references to
+	scriptics.com by tcl.tk.
+
+2003-02-11  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* tests/lsearch.test:
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): protect against the case
+	that lsearch -regepx list and pattern objects are equal.
+
+	* tests/stringObj.test:
+	* generic/tclStringObj.c (Tcl_GetCharLength): correct ascii char opt
+	of 2002-11-11 to not stop early on \x00. [Bug 684699]
+
+	* tests.parse.test: remove excess EOF whitespace
+
+	* generic/tclParse.c (CommandComplete): more paranoid check to break
+	on (p >= end) instead of just (p == end).
+
+2003-02-11  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclParse.c (CommandComplete):
+	* tests/parse.test: fix for [Bug 684744], by Don Porter.
+
+2003-02-11  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclIOUtil.c (Tcl_FSJoinPath, Tcl_FSGetNormalizedPath):
+	(UpdateStringOfFsPath): revert the cwdLen == 0 check and instead
+	follow a different code path in Tcl_FSJoinPath.
+	(Tcl_FSConvertToPathType, Tcl_FSGetNormalizedPath):
+	(Tcl_FSGetFileSystemForPath): Update string rep of path objects before
+	freeing the internal object. (darley)
+
+	* tests/fileSystem.test: added test 8.3
+	* generic/tclIOUtil.c (Tcl_FSGetNormalizedPath):
+	(UpdateStringOfFsPath): handle the cwdLen == 0 case
+
+	* unix/tclUnixFile.c (TclpMatchInDirectory): simplify the hidden file
+	match check.
+
+2003-02-10  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure:
+	* win/configure.in: Generate error when attempting to build under
+	Cygwin. The Cygwin port of Tcl/Tk does not build and people are filing
+	bug reports under the mistaken impression that someone is actually
+	maintaining the Cygwin port. A post to comp.lang.tcl asking someone to
+	volunteer as an area maintainer has generated no results. Closing bugs
+	680840, 630199, and 634772 and marking as "Won't fix".
+
+2003-02-10  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/append.n: Return value was not documented. [Bug 683188]
+
+2003-02-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3:
+	* generic/tclIOUtil.c:
+	* generic/tclInt.h:
+	* tests/fileSystem.test:
+	* unix/tclUnixFCmd.c:
+	* unix/tclUnixFile.c:
+	* win/tclWinFile.c: further filesystem optimization, applying [Patch
+	682500]. In particular, these code examples are faster now:
+	    foreach f $flist { if {[file exists $f]} {file stat $f arr;...}}
+	    foreach f [glob -dir $dir *] { # action and/or recursion on $f }
+	    cd $dir
+	    foreach f [glob *] { # action and/or recursion on $f }
+	    cd ..
+
+	* generic/tclTest.c: Fix for [Bug 683181] where test suite left files
+	in 'tmp'.
+
+2003-02-08  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* library/safe.tcl: code cleanup of eval and string comp use.
+
+2003-02-07  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWinFCmd.c: cleanup long lines
+	* win/tclWinFile.c: sped up pure 'glob' by a factor of 2.5
+	('foreach f [glob *] { file exists $f }' is still slow)
+	* tests/fileSystem.text:
+	* tests/fileName.test: added new tests to ensure correct behaviour in
+	optimized filesystem code.
+
+2003-02-07  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclTest.c:
+	* tests/fileSystem.text: fixed test 7.2 to avoid a possible crash, and
+	not change the pwd.
+
+	* tests/http.text: added comment to test 4.15, that it may fail if you
+	use a proxy server.
+
+2003-02-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileIncrCmd):
+	* tests/incr.test: Don't include the text "(increment expression)" in
+	the errorInfo generated by the compiled version of the incr command
+	since it does not match the message generated by the non-compiled
+	version of incr. It is also not possible to match this error output
+	under Jacl, which does not support a compiler.
+
+2003-02-06  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): When an error is
+	encountered reading the increment value during a compiled call to
+	incr, add a "(reading increment)" error string to the errorInfo
+	variable. This makes the errorInfo variable set by the compiled incr
+	command match the value set by the non-compiled version.
+	* tests/incr-old.test: Change errorInfo result for the compiled incr
+	command case to match the modified implementation.
+	* tests/incr.test: Add tests to make sure the compiled and
+	non-compiled errorInfo messages are the same.
+
+2003-02-06  Don Porter  <dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:  Filename arguments to [outputChannel]
+	and [errorChannel] (also -outfile and -errfile) were [open]ed but
+	never [closed]. Also, [cleanupTests] could remove output or error
+	files. [Bug 676978].
+	* library/tcltest/pkgIndex.tcl: Bumped to version 2.2.2.
+
+2003-02-05  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/interp.test:
+	* tests/set-old.test: Run test cases that depend on hash order through
+	lsort so that the tests also pass under Jacl. Does not change test
+	results under Tcl.
+
+2003-02-04  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c:
+	* generic/tclEvent.c:
+	* generic/tclInt.h:
+	* mac/tclMacFCmd.c:
+	* unix/tclUnixFCmd.c:
+	* win/tclWin32Dll.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinInit.c:
+	* win/tclWinInt.h:
+	* tests/fileSystem.test: fix to finalization/unloading/encoding issues
+	to make filesystem much less dependent on encodings for its cleanup,
+	and therefore allow it to be finalized later in the exit process. This
+	fixes fileSystem.test-7.1. Also fixed one more bug in setting of
+	modification dates of files which have undergone cross-platform
+	copies. [Patch 676271]
+
+	* tests/basic.test:
+	* tests/exec.test:
+	* tests/fileName.test:
+	* tests/io.test: fixed some test failures when tests are run from a
+	directory containing spaces.
+
+	* tests/fileSystem.test:
+	* generic/tclTest.c: added regression test for the modification date
+	setting of cross-platform file copies.
+
+2003-02-03  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* generic/tclBasic.c: Changed [trace add command] so that 'rename'
+	callbacks get fully qualified names of the command. [Bug 651271].
+	***POTENTIAL INCOMPATIBILITY***
+	* tests/trace.test: Modified the test cases for [trace add command] to
+	expect fully qualified names on the 'rename' callbacks. Added a case
+	for renaming a proc within a namespace.
+	* doc/trace.n: Added language about use of fully qualified names in
+	trace callbacks.
+
+2003-02-01  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* generic/tclCompCmds.c: Removed an unused variable that caused
+	compiler warnings on SGI. [Bug 664379]
+
+	* generic/tclLoad.c: Changed the code so that if Tcl_StaticPackage is
+	called to report the same package as being loaded in two interps, it
+	shows up in [info loaded {}] in both of them (previously, it didn't
+	appear in the static package list in the second).
+
+	* tests/load.test Added regression test for the above bug. [Bug
+	670042]
+
+	* generic/tclClock.c: Fixed a bug that incorrectly allowed [clock
+	clicks {}] and [clock clicks -] to be accepted as if they were [clock
+	clicks -milliseconds].
+
+	* tests/clock.test: Added regression tests for the above bug. [Bug
+	675356]
+
+	* tests/unixNotfy.test: Added cleanup of working files. [Bug 675609]
+
+	* doc/Tcl.n: Added headings to the eleven paragraphs, to improve
+	formatting in the tools that attempt to extract tables of contents
+	from the manual pages. [Bug 627455]
+
+	* generic/tclClock.c: Expanded mutex protection around the setting of
+	env(TZ) and the thread-unsafe call to tzset(). [Bug 656660]
+
+2003-01-31  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/tcltest.test: Cleaned up management of file/directory
+	creation/deletion to improve "-debug 1" output. [Bug 675614]
+	The utility [slave] command failed to properly [list]-quote a
+	constructed [open] command, causing failure when the pathname
+	contained whitespace. [Bug 678415]
+
+	* tests/main.test: Stopped main.test from deleting existing file. Test
+	suite should not delete files that already exist. [Bug 675660]
+
+2003-01-28  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/main.test: Constrain tests that do not work on Windows. [Bug
+	674387]
+
+2003-01-28  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to setting modification date in
+	TclCrossFilesystemCopy. Also added 'panic' in
+	Tcl_FSGetFileSystemForPath under illegal calling circumstances which
+	lead to hard-to-track-down bugs.
+
+	* generic/tclTest.c: added test suite code to allow exercising a
+	vfs-crash-on-exit bug in Tcl's finalization caused by the encodings
+	being cleaned up before unloading occurs.
+	* tests/fileSystem.test: added new 'knownBug' test 7.1 to demonstrate
+	the crash on exit.
+
+2003-01-28  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tcl.h: Add TCL_PREFIX_IDENT and TCL_DEBUG_IDENT, used only
+	by TclpCreateProcess.
+	* unix/Makefile.in: Define TCL_DBGX.
+	* win/Makefile.in: Define TCL_DBGX.
+	* win/tclWinPipe.c (TclpCreateProcess): Check that the Tcl pipe dll
+	actually exists in the Tcl bin directory and panic if it is not found.
+	Incorporate TCL_DBGX into the Tcl pipe dll name. This fixes a really
+	mysterious error that would show up when exec'ing a 16 bit application
+	under Win95 or Win98 when Tcl was compiled with symbols. The error
+	seemed to indicate that the executable could not be found, but it was
+	actually the Tcl pipe dll that could not be found.
+
+2003-01-26  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/README: Update msys+mingw URL to release 6. This version bundles
+	gcc 3.
+
+2003-01-26  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Add test that checks to see if the compiler can
+	cast to a union type.
+	* win/tclWinTime.c: Squelch compiler warning about union initializer
+	by casting to union type when compiling with gcc.
+
+2003-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_CutChannel, Tcl_SpliceChannel): Invoke
+	TclpCutFileChannel and TclpSpliceFileChannel.
+	* generic/tclInt.h: Declare TclpCutFileChannel and
+	TclpSpliceFileChannel.
+	* unix/tclUnixChan.c (FileCloseProc, TclpOpenFileChannel,
+	(Tcl_MakeFileChannel, TclpCutFileChannel, TclpSpliceFileChannel):
+	Implement thread load data cut and splice for file channels. This
+	avoids an invalid memory ref when compiled with -DDEPRECATED.
+	* win/tclWinChan.c (FileCloseProc, TclpCutFileChannel,
+	(TclpSpliceFileChannel): Implement thread load data cut and splice for
+	file channels. This avoids an invalid memory ref that was showing up
+	in the thread extension.
+
+2003-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWin32Dll.c (TclpCheckStackSpace, squelch_warnings):
+	* win/tclWinChan.c (Tcl_MakeFileChannel, squelch_warnings):
+	* win/tclWinFCmd.c (DoRenameFile, DoCopyFile, squelch_warnings):
+	Re-implement inline ASM SEH handlers for gcc. The esp and ebp
+	registers are now saved on the stack instead of in global variables so
+	that the code is thread safe. Add additional checks when TCL_MEM_DEBUG
+	is defined to be sure the values were recovered from the stack
+	properly. Remove squelch_warnings functions and add a dummy call in
+	the handler methods to squelch compiler warnings.
+
+2003-01-25  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure:
+	* win/configure.in: Define HAVE_ALLOCA_GCC_INLINE when we detect that
+	no alloca function is found in malloc.h and we are compiling with GCC.
+	Remove HAVE_NO_ALLOC_DECL define.
+	* win/tclWin32Dll.c (TclpCheckStackSpace): Don't define alloca as a
+	cdecl function. Doing this caused a tricky runtime bug because the
+	_alloca function expects the size argument to be passed in a register
+	and not on the stack. To fix this problem, we use inline ASM when
+	compiling with gcc to invoke _alloca with the size argument loaded
+	into a register.
+
+2003-01-24  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinDde.c (Dde_Init): clarified use of tsdPtr.
+	(DdeServerProc): better refcount handling of returnPackagePtr.
+
+	* generic/tclEvent.c (Tcl_Finalize): revert finalize change on
+	2002-12-04 to correct the issue with extensions that have TSD needing
+	to finalize that before they are unloaded. This issue needs further
+	clarification.
+
+	* tests/unixFCmd.test: only do groups check on unix
+
+2003-01-24  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclStringObj.c: proper fixes for Tcl_SetObjLength and
+	Tcl_AttemptSetObjectLength dealing with string objects with both
+	pure-unicode and normal internal representations. Previous fix didn't
+	handle all cases correctly.
+	* generic/tclIO.c: Add 'Tcl_GetString()' to ensure the object has a
+	valid 'objPtr->bytes' field before manipulating it directly.
+
+	This fixes [Bug 635200] and [Bug 671138], but may reduce performance
+	of Unicode string handling in some cases. A further patch will be
+	applied to address this, once the code is known to be correct.
+
+2003-01-24  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Add test to see if alloca is undefined in
+	malloc.h.
+	* win/tclWin32Dll.c (TclpCheckStackSpace): Rework the SEH exception
+	handler logic to avoid using the stack since alloca will modify the
+	stack. This was causing a nasty bug that would set the exception
+	handler to 0 because it tried to pop the previous exception handler
+	off the top of the stack.
+
+2003-01-23  Donal K. Fellows  <fellowsd@cs.man.ac.uk>
+
+	* doc/lset.n: Fixed fault in return values from lset in documentation
+	examples [SF Bug #658463] and tidied up a bit at the same time.
+
+2003-01-21  Joe English  <jenglish@users.sourceforge.net>
+
+	* doc/namespace.n (namespace inscope): Clarified documentation
+	[Patch 670110]
+
+2003-01-21  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Set SHLIB_SUFFIX so that
+	TCL_SHLIB_SUFFIX will be set to a useful value in the generated
+	tclConfig.sh. Set SHLIB_LD_LIBS to "" or '${LIBS}' based on the
+	--enable-shared flag. This matches the UNIX implementation.
+
+2003-01-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclCkalloc.c: change %ud to %u as appropriate.
+
+2003-01-17  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWinDde.c (DdeServerProc): Deallocate the Tcl_Obj returned by
+	ExecuteRemoteObject if it was not saved in a connection object.
+
+2003-01-17  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tcl.h: Revert earlier change that defined TCL_WIDE_INT_TYPE
+	as long long and TCL_LL_MODIFIER as L when compiling with mingw. This
+	change ended up causing some test case failures when compiling with
+	mingw.
+	* generic/tclObj.c (UpdateStringOfWideInt): Describe the warning
+	generated by mingw and why it needs to be ignored so that someone is
+	not tempted to "fix" this problem again in the future.
+
+2003-01-16  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclStringObj.c: Tcl_SetObjLength fix for when the object has
+	a unicode string rep. [Bug 635200]
+	* tests/stringObj.test: removed 'knownBug' constraint from test 14.1
+	now that this bug is fixed.
+
+	* generic/tclInt.h:
+	* generic/tclBasic.c:
+	* generic/tclCmdMZ.z:
+	* tests/trace.test: execution and command tracing bug fixes and
+	cleanup. In particular fixed [Bug 655645], [Bug 615043], [Bug 571385]
+	  - fixed some subtle cleanup problems with tracing. This required
+	    replacing Tcl_Preserve/Tcl_Release with a more robust refCount
+	    approach. Solves at least one known crash caused by memory
+	    corruption.
+	  - fixed some confusion in the code between new style traces (Tcl
+	    8.4) and the very limited 'Tcl_CreateTrace' which existed before.
+	  - made behaviour consistent with documentation (several tests even
+	    contradicted the documentation before).
+	  - fixed some minor error message details
+	  - added a number of new tests
+
+2003-01-16  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinSerial.c (SerialOutputProc): add casts for bytesWritten to
+	allow strict compilation (no warnings).
+
+	* tests/winDde.test:
+	* win/tclWinDde.c (Tcl_DdeObjCmd): Prevent crash when empty service
+	name is passed to 'dde eval' and goto errorNoResult in request and
+	poke error cases to free up any allocated data.
+
+2003-01-16  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWin32Dll.c (squelch_warnings): Squelch compiler warnings from
+	SEH ASM code.
+	* win/tclWinChan.c (squelch_warnings): Squelch compiler warnings from
+	SEH ASM code.
+	* win/tclWinDde.c: Add casts to avoid compiler warnings. Pass pointer
+	to DWORD instead of int to avoid compiler warnings.
+	* win/tclWinFCmd.c (squelch_warnings): Add casts and fixup decls to
+	avoid compiler warnings. Squelch compiler warnings from SEH ASM code.
+	* win/tclWinFile.c: Add casts and fixup decls to avoid compiler
+	warnings. Remove unused variable.
+	* win/tclWinNotify.c: Declare as DWORD instead of int to avoid
+	compiler warning.
+	* win/tclWinReg.c: Add casts to avoid compiler warning. Fix assignment
+	in if expression bug.
+	* win/tclWinSerial.c: Add casts to avoid compiler warnings. Remove
+	unused variable.
+	* win/tclWinSock.c: Add casts and fixup decls to avoid compiler
+	warnings.
+
+2003-01-14  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclClock.c (FormatClock): corrected typo that incorrectly
+	conditionally defined savedTZEnv and savedTimeZone.
+
+2003-01-13  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	Fix mingw build problems and compiler warnings.
+
+	* generic/tcl.h: Add if defined(__MINGW32__) check to code that sets
+	the TCL_WIDE_INT_TYPE and TCL_LL_MODIFIER.
+	* generic/tclClock.c (FormatClock): Don't define savedTimeZone and
+	savedTZEnv if we are not going to use them.
+	* generic/tclEnv.c: Add cast to avoid warning.
+	* win/tclWinChan.c: Use DWORD instead of int to avoid compiler warning
+	* win/tclWinThrd.c: Only define allocLock, allocLockPtr, and dataKey
+	when TCL_THREADS is defined. This avoid a compiler warning about
+	unused variables.
+
+2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/README: Update msys + mingw URL, the new release includes the
+	released 1.0.8 version of msys which includes a number of bug fixes.
+
+2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Pull in addition of shell32.lib to
+	LIBS_GUI that was added to the Tk tcl.m4 but never made it back into
+	the Tcl version.
+
+2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tcl.h: Skip Tcl's define of CHAR, SHORT, and LONG when
+	HAVE_WINNT_IGNORE_VOID is defined. This avoids a bunch of compiler
+	warnings when building with Cygwin or Mingw.
+	* win/configure: Regen.
+	* win/configure.in: Define HAVE_WINNT_IGNORE_VOID when we detect a
+	winnt.h that still defines CHAR, SHORT, and LONG when VOID has already
+	been defined.
+	* win/tcl.m4 (SC_LOAD_TCLCONFIG): Subst the TCL_DEFS loaded from
+	tclConfig.sh so that Tcl defines can make it into the Tk Makefile.
+
+2003-01-12  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Check for typedefs like LPFN_ACCEPT in winsock2.h
+	and define HAVE_NO_LPFN_DECLS if not found.
+	* win/tclWinSock.c: Define LPFN_* typedefs if HAVE_NO_LPFN_DECLS is
+	defined. This fixes the build under Mingw and Cygwin, it was broken by
+	the changes made on 2002-11-26.
+
+2003-01-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c:
+	* win/tclWinInt.h:
+	* win/tclWinInit.c: fix to new WinTcl crash on exit with vfs,
+	introduced on 2002-12-06. Encodings must be cleaned up after the
+	filesystem.
+
+	* win/makefile.vc: fix to minor VC++ 5.2 syntax problem
+
+2003-01-09  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileReturnCmd):  Corrected off-by-one
+	problem with recent commit. [Bug 633204]
+
+2003-01-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c: remove unused variable 'macSpecialCase'
+	[Bug 664749]
+
+	* generic/tclIOUtil.c:
+	* generic/tclInt.h:
+	* unix/tclUnixFile.c:
+	* mac/tclMacFile.c:
+	* win/tclWinFile.c:
+	* win/tclWinInt.h:
+	* win/tclWin32Dll.c:
+	* tests/cmdAH.test: fix to non-ascii chars in paths when setting mtime
+	and atime through 'file (a|m)time $path $time'. [Bug 634151]
+
+2003-01-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExprFloatError):  Use the IS_NAN macro for
+	greater clarity of code.
+
+2003-01-07  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileReturnCmd):
+	* tests/compile.test:	Corrects failure of bytecompiled [catch
+	{return}] to have result TCL_RETURN (not TCL_OK) [Bug 633204]. This
+	patch is a workaround for 8.4.X. A new opcode INST_RETURN is a better
+	long term solution for 8.5 and later.
+
+2003-01-04  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/makefile.vc:
+	* win/rules.vc:  Fixed INSTALLDIR macro problem that blanked itself by
+	accident causing the install target to put the tree at the root of the
+	drive built on. Whoops..
+
+	Renamed the 'linkexten' option to be 'staticpkg'. Added 'thrdalloc' to
+	allow the switching _on_ of the thread allocator. Under testing, I
+	found it not to be benificial under windows for the purpose of the
+	application I was using it for. It was more important for this app
+	that resources for tcl threads be returned to the system rather than
+	saved/moved to the global recycler. Be extra clean or extra fast for
+	the default threaded build? Let's move to clean and allow it to be
+	switched on for users who find it benificial for their use of threads.
+
+	******************************************************************
+	*** CHANGELOG ENTRIES FOR 2002 IN "ChangeLog.2002"             ***
+	*** CHANGELOG ENTRIES FOR 2001 IN "ChangeLog.2001"             ***
+	*** CHANGELOG ENTRIES FOR 2000 IN "ChangeLog.2000"             ***
+	*** CHANGELOG ENTRIES FOR 1999 AND EARLIER IN "ChangeLog.1999" ***
+	******************************************************************
diff --git a/ChangeLog.2004 b/ChangeLog.2004
new file mode 100644
index 0000000..82acd5c
--- /dev/null
+++ b/ChangeLog.2004
@@ -0,0 +1,4619 @@
+2004-12-29  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/tcl.m4, win/configure: update MSVC CFLAGS_OPT to -O2, remove -Gs
+	(included in -O2) and -GD (outdated). Use "link -lib" instead of "lib"
+	binary and remove -YX for MSVC7 portability. Add -fomit-frame-pointer
+	for gcc OPT compiles. [Bug 1092952, 1091967] Align LIBS_GUI with Tk
+	head needs.
+
+2004-12-29  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclDate.c: Regen
+	* generic/tclGetDate.y (TclDatelex): Fixed a problem where a
+	four-digit group with >=2 leading zeroes appeared to be a two-digit
+	group, leading to misinterpreting the time 0012 as 1200. [Bug 1090413]
+	* library/clock.tcl: Added code to interpret correctly months outside
+	the range 01-12 as reduced modulo 12 with a corresponding adjustment
+	to the year. [Bug 1092789]
+	* tests/clock.test: Added regression test cases for the above two bugs
+	* unix/Makefile.in: Added --no-lines to the 'bison' command line to
+	* win/Makefile.in: help constrain the number of diffs in a cvs checkin
+
+2004-12-24  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c:
+	* generic/tclCompile.h:
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclLiteral.c:
+	* generic/tclProc.c:
+	Avoid sharing cmdName literals accross namespaces, and generalise
+	usage of the TclRegisterNewLiteral macro. [Patch 1090905]
+
+2004-12-20  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c: moved TclInitCompiledLocals to tclProc.c
+	* generic/tclProc.c: new static InitCompiledLocals to allow for a
+	single pass over the proc's arguments at proc load time (instead of
+	two as previously). TclObjInterpProc() now allocates the
+	compiledLocals on the tcl execution stack, using the new
+	TclStackAlloc/Free functions.
+
+2004-12-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c (Tcl_LimitSetTime, TimeLimitCallback):
+	(TclLimitRemoveAllHandlers, TclInitLimitSupport): Set a timer event to
+	trigger when the time limit runs out. All the time limit actually does
+	is check to see if the time limit has been exceeded, but this is
+	enough to fix [Bug 1085023].
+	* generic/tclInt.h (struct Interp): Added a field to hold the token
+	for the timer event handler associated with the current time limit.
+	* generic/tclEvent.c (Tcl_UpdateObjCmd, Tcl_VwaitObjCmd): Add error
+	message when limit exceeded.
+	* tests/interp.test (interp-34.[89]): Check that time limits handle
+	the two cases reported in [Bug 1085023]
+
+	* generic/tclTimer.c (TclCreateAbsoluteTimerHandler): New internal
+	function that allows setting a timer handler that will be triggered at
+	(or after) a specific time instead of at some number of milliseconds
+	in the future. This is a candidate for future exposure via a TIP.
+
+2004-12-15  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h:
+	* generic/tclNamesp.c:
+	* generic/tclProc.c:
+	* generic/tclStubInit.c:
+	* generic/tclTest.c: Added two new functions to allocate memory from
+	the execution stack (TclStackAlloc, TclStackFree). Added functions
+	TclPushStackFrame and TclPopStackFrame that do the work of
+	Tcl_PushCallFrame and Tcl_PopCallFrame, but using frames allocated in
+	the execution stack - i.e., heap instead of C-stack. The core uses
+	these two new functions exclusively; the old ones remain for backwards
+	compat, as at least two popular extensions (itcl, xotcl) are known to
+	use them.
+
+2004-12-14  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCmdIL.c:
+	* generic/tclInt.h:
+	* generic/tclProc.c:
+	* generic/tclVar.c: changing the isProcCallFrame field of the
+	CallFrame struct from a 0/1 field to flags. Should be perfectly
+	backwards compatible.
+
+2004-12-14  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/configure.in: Added special processing to remove "$U" from
+	libraries in the LIBOBJS value. This is an auto-make-ism we need to
+	avoid. [Bug 1081541]
+
+	* unix/configure: autoconf-2.57
+
+2004-12-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tcl.h: Restored extern "C" guards so that C++ code sees
+	function pointer typedef linkage consistent with earlier Tcl releases.
+	[Bug 1082349]
+
+	* generic/tclEncoding.c: Plugged some memory leaks. Thanks to Rolf Ade
+	* generic/tclUtil.c:	 for reports and testing [Bug 1083082]
+
+2004-12-13  Kevin B. Kenny  <kennykb@acm.org>
+
+	* doc/clock.n: Clarify that the [clock scan] command does not accept
+	the full range of ISO8601 point-in-time formats. [Bug 1075433]
+
+2004-12-12  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c (TclArrayObjCmd - ARRAY_NAMES): leaking an object
+	[Bug 1084111] - thanks to Rolf Ade.
+
+2004-12-12  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclObj.c (TclSetCmdNameObj): special handling for fully
+	qualified command names (as in fix [Patch 456668]).
+
+2004-12-11  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclInt.h:
+	* generic/tclNamesp.c: converting the static function
+	GetNamespaceFromObj() to MODULE_SCOPE TclGetNamespaceFromObj().
+
+2004-12-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tools/tcl.wse.in, unix/tcl.spec, win/README.binary, README:
+	* win/configure.in, unix/configure.in, generic/tcl.h:
+	Bumped version number to 8.5a3 to distinguish HEAD of CVS development
+	from the recent 8.5a2 release.
+
+2004-12-10  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclInitCompiledLocals):
+	* generic/tclCompile.h:
+	* generic/tclInt.h:
+	* generic/tclProc.c (TclObjInterpProc, TclCreateProc): optimised
+	loops that initialise a proc's arguments and compiled local
+	variables, removing tests from inner loops.
+
+2004-12-10  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclInt.h: Move ensemble API decls here from tclNamesp.c
+
+2004-12-09  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (TclMakeEnsembleCmd, TclSetEnsemble*)
+	(TclSetEnsemble*, TclFindEnsemble): Build an internal API for creating
+	and manipulating ensembles; they can be deleted using the normal
+	command-deletion API.
+
+	* doc/Async.3: Reword for better grammar, better nroff and get the
+	flag name right. (Reported by David Welton.)
+
+2004-12-07  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/unixInit.test (2.1-4): Added constraints so that when a value
+	of TCL_LIBRARY is required for process initialization, we skip the
+	tests that mess with that value.
+
+2004-12-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	*** 8.5a2 TAGGED FOR RELEASE ***
+
+	* unix/Makefile.in: add library/{tzdata,msgs} to dist target (kbk)
+
+	* doc/foreach.n: Adjust tabs to be friendlier to some HTML
+	converters. [Bug 1078760]
+
+2004-12-06  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/tclUnixNotfy.c (NotifierThreadProc): init numFdBits
+	[Bug 1079286]
+
+	* doc/error.n, doc/SaveResult.3, doc/Thread.3: minor nroff typos
+
+2004-12-06  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/safe.test:	Trim auto_path to improve performance [1080039]
+
+	* tests/msgcat.test:	makeFile/removeFile cleanup [1079117]
+
+2004-12-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclEncoding.c:	Different fix for [Bug 1077005].
+	* generic/tclEvent.c:	Broke apart TclpSetInitialEncodings() on
+	* generic/tclInt.h:	Windows into TclpSetInterfaces(), that is
+	* unix/tclUnixInit.c:	fundamentally essential, and the initialization
+	* win/tclWinInit.c:	of the system encoding, which is not. Made
+	the TclpSetInterfaces call part of TclInitSubsystems so it cannot be
+	overlooked.
+
+2004-12-03  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* changes: updated for 8.5a2 release
+
+2004-12-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclUtil.c (TclSetProcessGlobalValue): Handle the case where
+	a ProcessGlobalValue might be assigned to itself.
+
+	* generic/tclEncoding.c (MakeFileMap): Correct refcounting errors
+	managing values returned by TclPathPart (with refCount of 1!) that led
+	to a memory leak. [Bug 1077474].
+
+2004-12-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c:  fix and new tests for [Bug 1074671] to ensure
+	* tests/fileSystem.test: tilde paths are not returned specially by
+	'glob'.
+
+2004-12-02  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/Makefile.in: Added a 'sed' in the setting of ROOT_DIR_NATIVE to
+	compensate for a bug in cygpath (at least version 1.36) that leaves a
+	trailing backslash on the end of the converted path.
+
+2004-12-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c (Alias,Target,Master): Rewrote these so that the
+	aliases that refer to an interpreter are stored in a list and not a
+	hashtable (which was only ever a convenience, and forced the use of a
+	global mutex to generate keys!) [FRQ 1077210]
+	* generic/tclNamesp.c (numNsCreated): Moved into thread-local storage
+	to remove a global mutex. [FRQ 1077210]
+
+2004-12-01  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclUtil.c (TclGetProcessGlobalValue): Narrowed the scope of
+	mutex locks.
+
+	* generic/tclUtil.c:		Updated Tcl_GetNameOfExecutable() to
+	* generic/tclEncoding.c:	make use of a ProcessGlobalValue for
+	* generic/tclEvent.c:		storing the executable name. Added
+	internal routines Tcl(Get|Set)ObjNameOfExecutable() to access that
+	storage in Tcl_Obj, rather than string format.
+
+	* unix/tclUnixFile.c:	Rewrote TclpFindExecutable() to use
+	* win/tclWinFile.c:	TclSetObjNameOfExecutable to store the
+	executable name it computes.
+
+	* generic/tclInt.h:	Added internal stub entries for
+	* generic/tclInt.decls: TclpFindExecutable and
+	Tcl(Get|Set)ObjNameOfExecutable.
+
+	* generic/tclIntDecls.h: make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclCmdIL.c:	Retrieve executable name in Tcl_Obj form
+	* win/tclWinPipe.c:	instead of string form.
+
+	* unix/tclUnixTest.c:	Update [testfindexecutable] command to use new
+	internal interfaces.
+
+	* generic/tclEncoding.c:	Moved TclpSetInitialEncodings() call
+	from Tcl_FindExecutable() into TclInitEncodingSubsystem(). This is
+	important on Windows where it establishes whether the "ascii" or
+	"unicode" set of system routines will be used, and that needs to be
+	done earlier to support filesystem operations. [Bug 1077005]
+
+2004-12-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/winDde.test: Rewritten to use tcltest2 features more
+	thoroughly (reducing the [catch] count!) and fix the problem with
+	winDde-6.1 being out of synch with the implementation.
+
+2004-11-30  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/init.tcl ([unknown]): Restored the save/restore of the
+	variables ::errorCode and ::errorInfo. This is needed when the
+	[::bgerror] command is auto-loaded (as it is by Tk).
+
+	Patch 976520 reworks several of the details involved with
+	startup/initialization of the Tcl library, focused on the activities
+	of Tcl_FindExecutable().
+
+	* generic/tclIO.c:	Removed bogus claim in comment that encoding
+	"iso8859-1" is "built-in" to Tcl.
+
+	* generic/tclInt.h:	Created a new struct ProcessGlobalValue,
+	* generic/tclUtil.c:	routines Tcl(Get|Set)ProcessGlobalValue, and
+	function type TclInitProcessGlobalValueProc. Together, these take care
+	of the housekeeping for "values" (things that can be held in a
+	Tcl_Obj) that are global across a whole process. That is, they are
+	shared among multiple threads, and epoch and mutex protection must
+	govern the validity of cached copies maintained in each thread.
+
+	* generic/tclNotify.c:	Modified TclInitNotifier() to tolerate being
+	called multiple times in the same thread.
+	* generic/tclEvent.c:	Dropped the unused argv0 argument to
+	TclInitSubsystems(). Removed machinery to unsure only one
+	TclInitNotifier() call per thread, now that that is safe. Converted
+	Tcl(Get|Set)LibraryPath to use a ProcessGlobalValue, and moved them to
+	tclEncoding.c.
+	* generic/tclBasic.c:	Updated caller.
+
+	* generic/tclInt.h:	TclpFindExecutable now returns void.
+	* unix/tclUnixFile.c:
+	* win/tclWinFile.c:
+	* win/tclWinPipe.c:
+
+	* generic/tclEncoding.c: Built new encoding search initialization on a
+	foundation of ProcessGlobalValues, exposing new routines
+	Tcl(Get|Set)EncodingSearchPath. A cache of a map from encoding name to
+	directory pathname keeps track of where encodings are available for
+	loading. Tcl_FindExecutable greatly simplified into just three
+	function calls. The "library path" is now misnamed, as its only
+	remaining purpose is as a foundation for the default encoding search
+	path.
+
+	* generic/tclInterp.c:	Inlined the initScript that is evaluated by
+	Tcl_Init(). Added verification after initScript evaluation that Tcl
+	can find its installed *.enc files, and that it has initialized
+	[encoding system] in agreement with what the environment expects.
+	[tclInit] no longer driven by the value of $::tcl_libPath; it largely
+	constructs its own search path now, rather than attempt to share one
+	with the encoding system.
+
+	* unix/tclUnixInit.c:	TclpSetInitialEncodings factored so that a new
+	* win/tclWinInit.c:	routine TclpGetEncodingNameFromEnvironment can
+	reveal that Tcl thinks the [encoding system] should be, even when an
+	incomplete encoding search path, or a missing *.enc file won't allow
+	that initialization to succeed. TclpInitLibraryPath reworked as an
+	initializer of a ProcessGlobalValue.
+
+	* unix/tclUnixTest.c:	Update implementations of [testfindexecutable],
+	[testgetdefenc], and [testsetdefenc].
+
+	* tests/unixInit.test:	Corrected tests to operate properly even when
+	a value of TCL_LIBRARY is required to find encodings.
+
+	* generic/tclInt.decls: New internal stubs: TclGetEncodingSearchPath,
+	TclSetEncodingSearchPath, TclpGetEncodingNameFromEnvironment. These
+	are candidates for public exposure by future TIPs.
+
+	* generic/tclIntDecls.h: make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclTest.c:	Updated [testencoding] to use
+	* tests/encoding.test:	Tcl(Get|Set)EncodingSearchPath.	 Updated tests.
+
+2004-11-30  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl: Corrected the regular expressions that match a
+	time zone to allow for time zones specified as +HH or -HH.
+	* tests/clock.test: Added regression test case for the above issue.
+	Thanks to Rolf Ade for reporting this issue [http://wiki.tcl.tk/13094]
+	* win/tclWinDde.c (Tcl_DdeObjCmd): Corrected a typo that caused a
+	compilation failure on VC++.
+
+2004-11-29  Andreas Kupries <andreask@activestate.com>
+
+	* win/Makefile.in (install-libraries): Brought entry '2004-10-26 Don
+	Porter (Tcl Modules)' into the windows world, actually the
+	win/configure buildsystem. The other windows buildsystems (.vc, .bc)
+	still have to be updated as well.
+
+2004-11-26  Andreas Kupries <andreask@activestate.com>
+
+	* win/tclWinDde.c (ExecuteRemoteObject): Removed bogus semicolon found
+	at the end of the header for the function definition, terminating it
+	early and preventing a compile. This is likely a fix for '2004-11-25
+	Donal'. I have to conclude that it is also unknown if the other
+	changes to this file actually pass the testsuite. Running testsuite
+	... They don't. winDde-6.1 fails. This is only a message discrepance,
+	i.e. not too bad. Leaving resolution of that to Pat and Donal.
+
+2004-11-26  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/auto.tcl (tcl_findLibrary): Made sure the uniquifying
+	operations on the search path does not also normalize. [Bug 1072136]
+
+2004-11-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/configure.in: Simplify the code to check for correctness of
+	strstr, strtoul and strtod.
+	* unix/tcl.m4 (SC_TCL_CHECK_BROKEN_FUNC): Split a complex stanza out
+	of configure.in into its own function. Also force it to do the right
+	thing with cacheing of results of AC_TRY_RUN to deal with issue raised
+	in [Patch 1073524]
+
+	* doc/foreach.n: Added simple example. [FRQ 1073334]
+
+2004-11-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclProc.c (TclObjInterpProc):	    Make it so that only
+	* generic/tclIndexObj.c (Tcl_WrongNumArgs): [proc] instances do
+	* tests/indexObj.test (indexObj-5.7):	    quoting of their first
+	arguments, so keeping [Bug 942757] fixed and making [Bug 1066837] be
+	fixed as well. Done with a load of #ifdef-ery because this hack is so
+	ugly nobody should keep it around once Itcl's fixed.
+
+2004-11-25  Reinhard Max  <max@suse.de>
+
+	* tests/tcltest.test: The order in which [glob] returns the file names
+	is undefined, so tests should not depend on it.
+
+2004-11-25  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* doc/Thread.3:
+	* doc/Notifier.3: Added changes from the core-8-4-branch
+
+2004-11-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/dde.n: Synchronized the documentation of the commands with the
+	header of the docs and what the package actually does. Thanks to
+	Andreas Kupries for spotting this.
+	* win/tclWinDde.c (Tcl_DdeObjCmd): Much cleanup of argument parsing
+	code.
+
+2004-11-24  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclPort.h: Relative include of tclWinPort.h returned as it
+	was requiring me set -I$(tcl_root)/win for my extensions that need to
+	include tclInt.h and doesn't appear to serve any purpose for windows
+	builds.
+
+2004-11-24  Kevin B. Kenny  <kennykb@acm.org>
+
+	* unix/tcl.m4 (SC_ENABLE_THREADS): Corrected bad check for 3-argument
+	readdir_r [Bug 1001325].
+	* unix/configure: Regenerated.
+	* unix/tclUnixNotfy.c: Corrected all uses of 'select' to manage their
+	masks using the FD_CLR, FD_ISSET, FD_SET, and FD_ZERO macros rather
+	than bit-whacking that failed under Solaris-Sparc-64. [Bug 1071807]
+	* win/tclWinInit.c (TclpInitLibraryPath): Removed unused vars 'pathc'
+	and 'pathv' that caused compilation problems on VC++ with
+	--enable-symbols.
+
+2004-11-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tcl.m4 (SC_ENABLE_THREADS): Corrected failure to determine the
+	number of arguments for readdir_r on SunOS systems. [Bug 1071701]
+
+	* unix/configure:	autoconf-2.57
+
+	* generic/tclCmdIL.c (InfoVarsCmd):	Corrected segfault in new
+	* tests/info.test (info-19.6):	trivial matching branch [Bug 1072654]
+
+2004-11-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tools/man2html.tcl, tools/man2html1.tcl: Update to use Tcl 8.4.
+	* tools/man2html2.tcl: Fix broken .SS handling.
+
+2004-11-23  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/Makefile.in: Add (commented-out) code to integrate tclConfig.h
+	into the dependency tree and 'make distclean'. [Bug 1068171]
+
+	* generic/tclResult.c (Tcl_AppendResultVA): Remove call to
+	Tcl_GetStringResult to speed up repeated calls to Tcl_AppendResult
+	with the side effect that code that wants to access interp->result
+	should always call Tcl_GetStringResult first. See [Patch 1041072]
+	discussion for more details.
+
+2004-11-22  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_TCL_64BIT_FLAGS): Define HAVE_TYPE_OFF64_T only when
+	off64_t, open64(), and lseek64() are defined. IRIX 5.3 is known to not
+	include an open64 function. [Bug 1030465]
+
+2004-11-22  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_ENABLE_THREADS): Check for a 2 argument version of
+	readdir_r that is known to exists under IRIX 5.3.
+	* unix/tclUnixThrd.c (TclpReaddir): Use either 2 arg or 3 arg version
+	of readdir_r. [Bug 1001325]
+
+2004-11-22  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tclUnixInit.c (TclpInitLibraryPath): Purged dead code that used
+	* win/tclWinInit.c (TclpInitLibraryPath):  to extend the "library
+	path". Search path construction for init.tcl is now done within the
+	[tclInit] proc.
+	* generic/tclInterp.c:	Restored several directories to the search
+	* tests/unixInit.test:	path used to locate init.tcl within [tclInit].
+	This change does not restore any directories to the encoding search
+	path, so should still avoid the price of an unreasonably large number
+	of filesystem accesses during encoding initialization at startup
+	[Bug 976438]
+
+2004-11-22  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: fix and new test for [Bug 1043129] in the
+	* tests/fileSystem.test: treatment of backslashes in file join on
+	Windows.
+
+2004-11-21  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/AddErrInfo.3:	Typo corrections (Thanks Daniel South).
+	* doc/interp.n:
+
+2004-11-19  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/AddErrInfo.3:	Docs for Tcl_(Get|Set)ReturnOptions. [TIP 227]
+
+	* doc/AddErrInfo.3:
+	* doc/Async.3:		Documentation updates to replace references
+	* doc/BackgdErr.3:	to global variable ::errorInfo and ::errorCode
+	* doc/SaveResult.3:	and to the ::bgerror command with references
+	* doc/after.n:		to their preferred replacements, the
+	* doc/bgerror.n:	-errorinfo and -errorcode return options,
+	* doc/error.n:		the Tcl_*InterpState routines, and the
+	* doc/exec.n:		[interp bgerror] command.
+	* doc/exit.n:
+	* doc/fileevent.n:
+	* doc/interp.n:
+	* doc/return.n:
+	* doc/tclvars.n:
+	* doc/update.n:
+
+	* tests/unixInit.test: Removed "knownBug" constraints to prompt bug
+	fixing before 8.5a2 release.
+
+2004-11-19  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile:
+	* unix/configure.in:
+	* unix/tclUnixInit.c (MacOSXGetLibraryPath): changed detection of tcl
+	framework build when determining tclLibPath from overloaded
+	TCL_LIBRARY to configuration define TCL_FRAMEWORK. [Bug 1068088]
+
+	* unix/configure: autoconf-2.57
+	* unix/tclConfig.h.in: autoheader-2.57
+
+2004-11-18  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/SaveResult.3:	Documentation for Tcl_*InterpState (TIP 226).
+
+	* generic/tclEvent.c (HandleBgErrors):	Simplified program flow.
+
+	* tests/basic.test:	Updated functional (not testing) uses of
+	* tests/io.test:	[bgerror] to make use of [interp bgerror].
+	* tests/socket.test:
+	* tests/timer.test:
+
+	* tests/interp.test (interp-36.*):	[interp bgerror] tests.
+
+	* generic/tclInterp.c:	Corrected [interp bgerror] error messages.
+
+2004-11-18  Reinhard Max  <max@suse.de>
+
+	* unix/tcl.m4 (SC_CONFIG_MANPAGES): Applied an improved version of
+	* unix/configure.in:		    [Patch 996085], that introduces
+	* unix/Makefile.in:		    --enable-man-suffix.
+
+	* unix/installManPage:		    added
+	* unix/mkLinks.tcl:		    removed
+	* unix/mkLinks:			    removed
+	* unix/configure:		    generated
+
+	* unix/Makefile.in:		    Don't install tclConfig.h .
+
+2004-11-17  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/configure.in: The change below reveals that the public data
+	type Tcl_StatBuf relies on config information. For now, disabled the
+	use of the tclConfig.h file until its full impact on Tcl's interface
+	can be assessed.
+
+	* unix/configure:	autoconf-2.57
+
+	* generic/tcl.h:	Moved the #include "tclConfig.h" out of
+	* generic/tclInt.h:	tcl.h.	The config settings are not part of
+	* generic/tclPort.:	the public interface, and having it there
+	breaks compiled against uninstalled Tcl and extensions using
+	autoconf-2.5*.
+
+2004-11-16  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/tclUnixChan.c (TtySetOptionProc): fixed crash configuring
+	-ttycontrol on a channel. [Bug 1067708]
+
+2004-11-16  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclIOUtil.c (TclFSEpochOk): There were two code paths via
+	which the thread copy of filesystemEpoch could be synched with the
+	master copy, but only one kept the filesystem list cache up to date.
+	Fix routes everything through a single code path. [Bug 1035775].
+
+2004-11-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Stop architecture flags to 'ld' from
+	getting lost when [load] is disabled. [Bug 1016796]
+
+2004-11-16  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tcl.h:
+	* unix/configure.in: changed HAVE_CONFIG_H to HAVE_TCL_CONFIG_H.
+
+	* unix/configure: autoconf-2.57
+
+2004-11-15  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h: Added comment warning that the old ERR_IN_PROGRESS
+	and ERROR_CODE_SET flag values should not be re-used for the sake of
+	those extensions that have accessed them.
+
+	* generic/tclCmdMZ.c (Tcl_TraceObjCmd): Fixed Bug 1065378 which failed
+	* tests/trace.test (trace-33.1):	to permit a variable trace
+	created with [trace variable] to be destroyed with [trace remove].
+	Thanks to Keith Vetter for the report.
+
+2004-11-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/tclvars.n: Added section to documentation on global variables
+	that are specific to tclsh and wish. [Patch 1065732]
+
+2004-11-12  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclEncoding.c (TableFromUtfProc): correct crash condition
+	when TCL_UTF_MAX == 6. [Bug 1004065]
+
+2004-11-12  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/interp.n: Basic documentation of the TIP#221 API.
+
+2004-11-12  Don Porter	<dgp@users.sourceforge.net>
+
+	TIP #221 IMPLEMENTATION
+	* generic/tclBasic.c:	Define [::tcl::Bgerror] in new interps.
+	* generic/tclEvent.c:	Update Tcl_BackgroundError to make use of the
+				registered [interp bgerror] command.
+	* generic/tclInterp.c:	New [interp bgerror] subcommand.
+	* tests/interp.test:	syntax tests updated.
+
+	TIP #226 IMPLEMENTATION
+	* generic/tcl.decls:	Stubs for Tcl_(Save|Restore|Discard)InterpState
+	* generic/tcl.h:	New public opaque type, Tcl_InterpState.
+	* generic/tclInt.h:	Drop old private declarations. Add
+				Tcl(Get|Set)BgErrorHandler
+	* generic/tclResult.c:	Tcl_*InterpState implementations.
+	* generic/tclDictObj.c:	Update callers.
+	* generic/tclIOGT.c:
+	* generic/tclTrace.c:
+
+	TIP #227 IMPLEMENTATION
+	* generic/tcl.decls:	Stubs for Tcl_(Get|Set)ReturnOptions.
+	* generic/tclInt.h:	Drop old private declarations.
+	* generic/tclResult.c:	Tcl_*ReturnOptions implementations.
+	* generic/tclCmdAH.c:	Update callers.
+	* generic/tclMain.c:
+
+	* generic/tclDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* unix/tclAppInit.c:	Removed tclConfig.h #include, now that tcl.h
+				takes care of it for us.
+
+	* generic/tclInt.h:	Moved verification of ptrdiff_t typedef from
+	* generic/tclExecute.c: multiple .c files into one common header where
+	* generic/tclVar.c:	it is verifiably after tclConfig.h inclusion.
+
+2004-11-12  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tcl.h:
+	* generic/tclInt.h:
+	* unix/Makefile.in: include tclConfig.h from tcl.h and install it as a
+	public header. Normalized compiler include path order to
+	-I${BUILD_DIR} -I${UNIX_DIR} -I${GENERIC_DIR}.
+
+	* unix/dltest/Makefile.in: add ${BUILD_DIR}/.. to include path to pick
+	up tclConfig.h.
+
+	* unix/tclUnixInit.c: moved check for HAVE_CFBUNDLE define after
+	#include "tclInt.h" to ensure tclConfig.h has been included.
+
+2004-11-12  Reinhard Max  <max@suse.de>
+
+	* unix/config.h.in:
+	* unix/tclConfig.h.in:	renamed
+
+	* unix/Makefile.in:	Completed support for config header,
+	* unix/configure.in:	fixed building outside of the unix dir,
+	* unix/tclAppinit.c:	and reflected the name change of config.h.
+	* generic/tclInt.h:
+
+	* unix/configure:	generated
+
+2004-11-12  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/config.h.in:	Allow configure to put all the C #defs into
+	* unix/configure.in:	a file (called config.h) so that Unix builds
+	* unix/tcl.m4:		now take far fewer lines of scrollback to
+	* unix/Makefile.in:	proceed (making it less likely that any errors
+	* generic/tclInt.h:	or warnings will get missed).
+	* unix/tclAppInit.c:	Part of the TIP#34 upgrades.
+
+	* unix/tcl.m4, unix/tclUnixPort.h: Check for pthread_attr_get_np in
+	<pthread.h> before forcing the use of <pthread_np.h> to make things
+	work on NetBSD 2.0. [Bug 1064882]
+
+	* doc/binary.n, doc/upvar.n: More minor fixes.
+
+2004-11-12  Daniel Steffen  <das@users.sourceforge.net>
+
+	* doc/CrtChannel.3:
+	* doc/Interp.3:
+	* doc/Limit.3:
+	* doc/binary.n:
+	* doc/dict.n:
+	* doc/tm.n:
+	* doc/upvar.n: fixed *roff errors uncovered by running 'make html'.
+
+	* tools/tcltk-man2html.tcl: added faked support for bullet point
+	lists, i.e. *nroff ".IP \(bu" syntax.
+
+2004-11-11  Daniel Steffen  <das@users.sourceforge.net>
+
+	* tests/fCmd.test:
+	* unix/tclUnixFCmd.c (TraverseUnixTree): added option to rewind() the
+	readdir() loop whenever the source hierarchy has been modified by
+	traverseProc (e.g. by deleting files); this is required to ensure
+	complete traversal of the source hierarchy on certain filesystems like
+	HFS+. Added test for failing recursive delete on Mac OS X that was due
+	to this. [Bug 1034337]
+
+	* generic/tclListObj.c (Tcl_ListObjReplace): use memmove() instead of
+	manual copy loop to shift list elements. Decreases time spent in
+	Tcl_ListObjReplace() from 5.2% to 1.7% of overall runtime of tclbench
+	on a ppc 7455 (i.e. 200% speed increase). [Patch 1064243]
+
+	* generic/tclHash.c: hoisted some constant pointer dereferences out of
+	loops to eliminate redundant loads that the gcc optimizer didn't deal
+	with. Decreases time spend in Tcl_FindHashEntry() by 10% over a full
+	run of the tcl testuite on a ppc 7455. [Patch 1064243]
+
+	* tests/fileName.test:
+	* tests/fileSystem.test:
+	* tests/io.test:
+	* tests/msgcat.test:
+	* tests/tcltest.test:
+	* tests/unixInit.test: fixed bugs causing failures when running tests
+	with -tmpdir arg not set to working dir.
+
+	* macosx/Makefile: corrected path to html help inside framework.
+	Prevent parallel make from building several targets at the same time.
+
+	* macosx/tclMacOSXFCmd.c (struct fileinfobuf): force struct to be
+	packed to prevent failures when builing with -malign=natural.
+
+2004-11-10  Andreas Kupries <andreask@activestate.com>
+
+	* unix/tclUnixChan.c: [Bug 727786]. Exterminated the code marked
+	DEPRECATED. This code has not been used in over a year now, and we
+	have no complaints.
+
+2004-11-08  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c: The pipe channel driver now respects the -blocking
+	option when closing is the same way the UNIX side works. This is to
+	avoid a hung shell when exiting due to open pipes that refuse to close
+	in a graceful manner.
+	* doc/open.n: Added a note about -blocking 0 and lack of exit status
+	as it had never been documented. [Bug 947693]
+
+	***POTENTIAL INCOMPATIBILITY***
+
+	Scripts that use async pipes on windows, must (like the UNIX side) set
+	-blocking to 1 before calling [close] to receive the exit status.
+
+2004-11-07  David Gravereaux <davygrvy@pobox.com>
+
+	* tests/winFile.test: added contraint to winFile-4.0 to prevent it
+	being run on NT4 [Bug 981829]
+
+2004-11-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/reg.test: Major reorganization so that this file is much
+	easier for a normal Tcl maintainer to comprehend. The test flags are
+	still very cryptic, but they appear to have to be that way. The number
+	of skipped tests has increased, but now the skipped tests have much
+	more meaningful content.
+
+	* tests/tm.test (genpaths): Add a [file normalize] so we pick up
+	Windows drive letters, etc. [Bug 1053568]
+
+2004-11-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* changes:	Updates toward an 8.5a2 release.
+
+2004-11-03  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl (FreeScan): Fixed a bug where scanning "Monday"
+	with a base time other than midnight incorrectly carried the base time
+	forward.
+
+	* test/clock.test (clock-33.{5,5a}): Made the test failure more
+	informative.
+
+	* tests/clock.test (clock-34.{28,44,45,46}): Removed 'knownBug'
+	constraints from tests that no longer fail.
+
+	Thanks to Don Porter for reporting these.
+
+2004-11-03  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tcl.h:		Moved the preprocessor logic
+	* generic/tclDecls.h:		from tclInt.h of setting the
+	* generic/tclInt.h:		TCL_STORAGE_CLASS macro to the
+	* generic/tclIntDecls.h:	tcl*Decls.h files now that no
+	* generic/tclIntPlatDecls.h:	use of EXTERN is left in tclInt.h.
+	* generic/tclPlatDecls.h:	Proto for Tcl_Main moved in tcl.h
+	* win/tclWinPort.h:		to prior the inclusion of the Stubs
+	headers as they are now resetting TCL_STORAGE_CLASS. Removed
+	extraineous reset from tclWinPort.h. [Patch 1055668]
+
+	* generic/tclCompile.h: Removed extrainious reset of TCL_STORAGE_CLASS
+	missed in my last edit.
+
+2004-11-03  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/init.tcl ([unknown]): Corrections to the 2004-10-25 mods to
+	Aunt ??? in [unknown]. Flaws revealed by Itcl test suite, which still
+	apparently relies on this brokenness. Also added comment suggesting
+	the error message that any code using this hack *ought* to receive in
+	reply.
+
+	* generic/tclTrace.c (TclCallVarTraces):  Improved ability to debug
+	* tests/incr-old.test (incr-old-2.6):	  errors during variable
+	* tests/incr.test (incr-{1,2}.28):	  traces by preserving the
+	* tests/set.test (set-{2,4}.4):		  -errorinfo data.
+	* tests/trace.test (trace-33.1):	  [Bug 527164]
+
+2004-11-02  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclInt.h: added a check for #ifdef __cplusplus around the
+	#define of MODULE_SCOPE. About the only time it would be problem is
+	when someone is statically linking to Tcl and accessing internals from
+	a C++ file and has name mangling issues from the lack of "C" after
+	'extern' [Patch 1055668].
+	* generic/tclCompile.h: Exchanged use of the EXTERN macro to the new
+	MODULE_SCOPE macro. Lowered exported internals count by 35. [Patch
+	1055668]
+	* win/tclWinInt.h:
+	* win/tclWinPort.h: exported internals dropped by a count of 14.
+	* generic/tclFileSystem.h: Added use of MODULE_SCOPE on protos.
+	* generic/tclRegexp.h: manipulating TCL_STORAGE_CLASS unnecessary.
+
+2004-11-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:		Corrected some misleading
+	* tests/tcltest.test (tcltest-26.1,2):	displays of ::errorInfo and
+	::errorCode information when the -setup, -body, and/or -cleanup scripts
+	return an unexpected return code. Thanks to Robert Seeger for the fix.
+	[RFE 1017151].
+
+2004-11-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclExecute.c (TclExecuteByteCode): Improved version of the
+	NaN fix from Miguel Sofer. [Bug 761471]
+
+2004-11-02  Kevin Kenny	 <kennykb@acm.org>
+
+	* library/tzdata/America/Cuiaba: Change to DST rules for
+	* library/tzdata/America/Havana: autumn of 2004.
+	[ftp://elsie.nci.nih.gov/pub/tzdata2004g.tar.gz]
+
+	* tools/tclZIC.tcl: Updated to be compatible with recent changes in
+	library/clock.tcl.
+
+2004-11-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWinFile.c: Simplify TclpUtime to use Tcl_FSGetNativePath, and
+	add comments.
+
+2004-11-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInt.h: Change uses of EXTERN to MODULE_SCOPE (defined in
+	this file too to be 'extern' if not overridden) as nothing declared in
+	tclInt.h is supposed to be visible outside the Tcl core. If there *is*
+	anything that extensions are actually using, we can open this up later
+	on. [Patch 1055668]
+
+	* doc/CrtChannel.3 (Tcl_GetChannelMode): Add synopsis. [Bug 1058446]
+
+2004-11-01  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/tclWinFile.c (FromCTime, TclpUtime): Replaced a call to the
+	Posix 'utime' function with calls to Windows-API equivalents, to avoid
+	a bug where the VC++ versions misconvert times across a Daylight
+	Saving Time boundary. [Bug 926106]
+	* win/tclWinInt.h (TclWinProcs):
+	* win/tclWin32Dll.c (asciiProcs, unicodeProcs): Removed now-unused
+	reference to 'utime'.
+	* tests/cmdAH.test (cmdAH-24.12): Added test case for the above bug.
+
+2004-11-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclExecute.c (TclExecuteByteCode): Make INST_EQ and friends
+	handle NaN correctly in all cases. [Bug 761471]
+
+	* generic/tclNamesp.c (NamespaceInscopeCmd): Make the error message
+	generation the same as in NamespaceEvalCmd().
+	(Tcl_Import): Rationalized to use Tcl_EvalObjv().
+
+2004-10-31  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/io.test (io-40.3): Convert umask2 test constraint into a form
+	that most people will be able to satisfy.
+
+	* tests/cmdAH.test (cmdAH-8.45): Removed broken test constraint. It
+	didn't do what it was intended to do, and it implied the other correct
+	constraint. [Bug 1053908]
+
+	* generic/tclCmdIL.c (InfoGlobalsCmd):
+	* tests/info.test (info-8.4): Strip leading global-namespace
+	specifiers from the pattern argument. [Bug 1057461]
+
+2004-10-30  Kevin Kenny	 <kennykb@acm.org>
+
+	* generic/clock.c: Replaced WIN32 macro with __WIN32__. [Bug 1054357].
+	Thanks to David Gravereaux for the patch.
+	* win/tclWinFile.c: Removed a long-standing bug that causes incorrect
+	conversion between file time and UTC time if the file time is recorded
+	in a different Daylight Saving Time status than the current one. [Bug
+	926106]
+
+2004-10-29  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	Correct reaction to errors in the
+	obsolete processCmdLineArgsHook.	[Bug 1055673]
+	* library/tcltest/pkgIndex.tcl:	Bump to tcltest 2.2.7
+	* unix/Makefile.in:
+	* tests/all.tcl:	Update to use [tcltest::configure].
+
+2004-10-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* library/tm.tcl (::tcl::tm::*): Use the core proc engine to generate
+	the wrong-num-args error messages for the path ensemble.
+
+	Ensembles can now (sometimes) rewrite the error messages of their
+	subcommands so they appear more like the arguments that the user
+	passed to the ensemble. Below is a description of changes involved in
+	doing this.
+
+	* tests/namespace.test (namespace-50.*): Tests of ensemble subcommand
+	error message rewriting.
+	* generic/tclProc.c (TclObjInterpProc): Make procedures implement
+	their wrong-num-args message using Tcl_WrongNumArgs instead of
+	something baked-at-home.
+	* generic/tclNamesp.c (TclIsEnsemble, NsEnsembleImplementationCmd):
+	Added test of ensemble-hood (available to rest of core) and made
+	ensembles set up the rewriting for Tcl_WrongNumArgs to take advantage
+	of.
+	* generic/tclInt.h (Interp.ensembleRewrite): Extra fields.
+	* generic/tclIndexObj.c (Tcl_WrongNumArgs): Add knowledge of what is
+	going on in ensembles' command rewriting so this command can generate
+	the right error message itself.
+	* generic/tclBasic.c (Tcl_CreateInterp, TclEvalObjvInternal): Added
+	code to initialize (as empty) the rewriting fields and reset them when
+	we leak outside an ensemble implementation.
+
+2004-10-28  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_START_CMD):
+	* tests/execute.test (execute-8.3): fix for execution stack corruption
+	[Bug 1055676]. Credit dgp for detective work and fix.
+
+2004-10-27  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/socket.test (socket-13.1):	Balanced [makeFile] and
+	[removeFile] commands.
+
+	* tests/clock.test:	Correct duplicate test names.
+	* tests/namespace.test:
+	* tests/string.test:
+	* tests/io.test (io-50.4):	Use namespace variables.
+
+2004-10-27  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclInt.decls:	  The following 9 functions were moved from
+	* generic/tclInt.h:	  tclInt.h to the private/int Stubs table for
+	* generic/tclIntDecls.h:  use by the test suite. As tclTest.obj is
+	* generic/tclStubInit.c:  linked to the shell, these functions need
+	"blessed" status so as to always be exported from the library. Being
+	placed in the Stubs table guarantees this [Bug 1054748]:
+		TclpObjRemoveDirectory,	TclpObjCopyDirectory,
+		TclpObjCreateDirectory,	TclpObjDeleteFile,
+		TclpObjCopyFile,	TclpObjRenameFile,
+		TclpObjStat,		TclpObjAccess,
+		TclpOpenFileChannel
+
+	* tests/registry.test:	Fixed test files to load the correct
+	* tests/winDde.test:	registry and dde packages by using the info
+	* win/Makefile.in:	from makefiles to tell tcltest where to load
+	* win/makefile.vc:	them from. This avoids grabbing the wrong
+	package from $auto_path which might be the install point rather than
+	the dev location. Kudos to Jennifer Hom for adding -load and
+	-loadfile to the tcltest package. [Bug 926088]
+
+	* win/tclWinThrd.c (TclFinalizeLock): release the critical section
+	before deleting it. [Bug 731778]
+
+	* generic/tcl.h: Removed the file level 'extern "C" {' and the
+	coresponding closing block as it serves no purpose given that all the
+	function prototypes have the proper extern usage already.
+
+	* unix/tclAppInit.c:	When built as tcltest, TclThread_Init was
+	* win/tclAppInit.c:	getting called twice. First by Tcltest_Init,
+	then again in Tcl_AppInit. The call from Tcl_AppInit is now removed.
+
+2004-10-27  Andreas Kupries <andreask@activestate.com>
+
+	* tests/tm.test:  Expanded on the testsuite entered by Donal.
+	* library/tm.tcl: Even found bugs, these have been corrected.
+
+2004-10-26  Kevin Kenny <kennykb@acm.org>
+
+	* tests/format.test (format-19.1): Additional regression test for [Bug
+	868489].
+
+2004-10-27  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/*.n: Many small general documentation fixes.
+
+2004-10-26  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclPipe.c (TclCleanupChildren): bad cast of resolvedPid
+	caused PIDs on win95 to go negative. winpipe-4.2 brought this to the
+	surface. Fixed with sprintf in place of TclFormatInt. Thanks to hgiese
+	[Patch 767676]
+
+2004-10-26  Andreas Kupries <andreask@activestate.com>
+
+	* library/tm.tcl (::tcl::tm::Defaults): Added a second [file dirname]
+	around the location of the executable. This fixes [Bug 1038705].
+	Instable of a bogus "foo/bin/lib" we now have the correct "foo/lib" as
+	a base path for modules.
+
+2004-10-26  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclParse.c (Tcl_SubstObj):	Fix for failed subst-12.3 test
+	* tests/subst.test (subst-12.3-5):	More tests for Bug 1036649.
+
+	* unix/Makefile.in (install-libraries): Updated the installation of
+	the http, msgcat, and tcltest packages to install as Tcl Modules on
+	Unix systems. Other platform Makefiles still need updating. [Patch
+	1054370]
+
+	* tests/basic.test:	Added missing constraints.
+	* tests/compile.test:
+	* tests/fileSystem.test:
+
+	* tests/init.test (init-2.8):	Updated to not rely on http package.
+
+2004-10-26  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclInt.h:
+	* generic/tclVar.c: removed more direct references to the VAR flags,
+	replaced with access macros.
+
+2004-10-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/expr.n: Clarified that non-num/non-bool literals require
+	quoting. [Bug 1027849]. Also listed booleans as acceptable values.
+
+2004-10-26  Kevin B. Kenny <kennykb@acm.org>
+
+	* library/clock.tcl (FreeScan): Fixed a bug that caused relative days
+	of the week in free-form [clock scan] to be evaluated in the wrong
+	time zone.
+	* tests/clock.test (clock-31.[456]): Made sure that there isn't an
+	env(TZ) or env(TCL_TZ) lying around that will override the time zone
+	that we're trying to establish with the simulated registry.
+	Both problems reported as [Bug 1054101].
+
+2004-10-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/string.n (map): Rewrote to clarify that we don't just map single
+	characters. [Bug 1048005]
+	* doc/info.n (procs): Clarified that the pattern argument may have
+	namespace separators in it. [Bug 1047928]
+
+	* tests/cmdAH.test (cmdAH-8.45): Simplify in the hope that the reasons
+	for [Bug 1053908] will become clearer.
+
+2004-10-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c (IllegalExprOperandType,TclExecuteByteCode):
+	Removed several DECACHE_INFO/CACHE_INFO pairs that are no longer
+	needed for protection because routines like Tcl_SetErrorCode() and
+	Tcl_AddErrorInfo() can no longer re-enter bytecode execution.
+
+	* generic/tclResult.c (TclProcessReturn): Bug fix. Be sure that a
+	missing -errorinfo option when code == TCL_ERROR causes the errorInfo
+	field to get reset.
+
+	* tests/thread.test (thread-4.4): Test depended on a ::errorInfo value
+	initialized to "". Added code to test to setup that requirement.
+
+	* library/auto.tcl:	Purged Tcl's script library of all
+	* library/clock.tcl:	remaining references to global vars
+	* library/init.tcl:	::errorInfo and ::errorCode.
+
+	* generic/tclMain.c (Tcl_Main): Updated to make use of
+	TclGetReturnOptions instead of ::errorInfo variable.
+
+	* generic/tclInterp.c (tclInit): Bug fix. Access dict variables with
+	[dict get], not array syntax.
+
+2004-10-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/tm.test: Rewrote the tests to actually perform syntax checks
+	on the public API. Added a new test (currently failing) to indicate
+	that the test suite is not complete yet.
+	* library/tm.tcl (path): Rewrote to turn this command into an ensemble
+	to make it faster and simpler.
+
+2004-10-24  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCmdIL.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclTrace.c: defined new macros to get/set the flags of
+	variables. The only files that still access the flag values directly
+	are tclCompCmds.c, tclCompile.c, tclProc.c and tclVar.c
+
+2004-10-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_LogCommandInfo,Tcl_AddObjErrorInfo): Shift
+	the initialization of errorCode to NONE to more central location.
+
+	* generic/tclEvent.c (BgError,Tcl_BackgroundError,HandleBgErrors):
+	Rewrite to build on the new TclGet/SetReturnOptions routines.
+
+	* generic/tclResult.c (TclGetReturnOptions): Add call to
+	Tcl_AddObjErrorInfo to be sure error fields are initialized.
+
+	* generic/tclResult.c (TclTransferResult): Rewrite to build on the new
+	TclGet/SetReturnOptions routines.
+
+2004-10-22  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/tm.n: Tightened up the documentation.
+	* tests/tm.test: Created (with partially dummy content) so TIP#189 can
+	be marked Final.
+
+	* generic/tclNamesp.c (NsEnsembleImplementationCmd): Make ensembles
+	cut their implementations out of error traces. This is the right thing
+	to do more often than not.
+
+2004-10-22  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl: Fixed a typo where the fallback time zone became
+	::localtime instead of :localtime. Fixed a bug where time zone names
+	containing hyphens could not be loaded.
+	* tests/clock.test: Added regression test cases that covers both bugs.
+	Thanks to Todd M. Helfter <tmh@jumpgate.itsp.purdue.edu> for finding
+	these bugs.
+
+2004-10-22  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclExecute.c (TclCompEvalObj, Tcl_ExprObj):
+	* generic/tclProc.c (TclProcCompileProc): Always call object
+	freeIntRepProc's in the same way.
+
+2004-10-22  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c: fixed bug in commit of 2004-07-23, which was
+	causing a leak of Proc structures and failure of compile-12.1. Two
+	lines were 'zombies' from the previous way localVarNames worked.
+	Credit dgp for finding this.
+
+2004-10-21  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h (Interp):
+	* generic/tclBasic.c (Tcl_CreateInterp,Tcl_DeleteInterp):
+	* generic/tclResult.c (GetKeys,ReleaseKeys,etc.): Moved the key values
+	of the return options dictionary out of private fields of the Interp
+	struct and into thread-static values managed in tclResult.c.
+
+	* generic/tclCmdAH.c (Tcl_CatchObjCmd, Tcl_ErrorObjCmd): Updated to
+	call the new TclGet/SetReturnOptions routines to do much of their
+	work.
+
+	* generic/tclInt.h (TclGetReturnOptions,TclSetReturnOptions):
+	* generic/tclResult.c (TclGetReturnOptions,TclSetReturnOptions): New
+	utility routines to get/set the return options of an interp. Intent is
+	that these routines will be converted to public routines after TIP
+	approval.
+
+	* generic/tclCmdMZ.c (TclProcessReturn,TclMergeReturnOptions):
+	* generic/tclResult.c (TclProcessReturn,TclMergeReturnOptions): Move
+	internal utility routines from tclCmdMZ.c to tclResult.c.
+
+	* generic/tclBasic.c (Tcl_CreateInterp, Tcl_DeleteInterp):
+	* generic/tclResult.c (TclTransferResult): Rework so that
+	iPtr->returnOpts can be NULL when there are no special options.
+
+	* generic/tclResult.c (TclRestoreInterpState): Plug potential memory
+	leak.
+
+2004-10-21  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclBasic.c: Various changes to [clock format] that,
+	* generic/tclClock.c: together, make it roughly twice as fast
+	* generic/tclInt.h:   while all tests in the test suite
+	* library/clock.tcl:  continue to pass.
+
+2004-10-20  Andreas Kupries <andreask@activestate.com>
+
+	* win/Makefile.in (install-msgs):   Fixed a problem with the
+	* win/Makefile.in (install-tzdata): installation of timezone data and
+	message catalogs. They used the installed tcl library directory, not
+	the source library. Before it was installed. Switched to source lib
+	dir. Thanks to Kevin for the help in figuring this out.
+
+2004-10-20  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclThreadTest.c (ThreadEventProc): Corrected subtle bug
+	where the returned (char *) from Tcl_GetStringResult(interp) continued
+	to be used without copying or refcounting, while activity on the
+	interp continued. That's not safe, and recent changes demonstrated the
+	lack of safety with failing tests thread-4.3 and thread-4.5.
+
+2004-10-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclDictObj.c (DictWithCmd): Make sure all paths (that are
+	not themselves error paths) do not lose the result code.
+
+2004-10-19  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h (Tcl*InterpState):		New internal routines
+	* generic/tclResult.c (Tcl*InterpState):	TclSaveInterpState,
+	TclRestoreInterpState, and TclDiscardInterpState are superior
+	replacements for Tcl_(Save|Restore|Discard)Result. Intent is that
+	these routines will be converted to public routines after TIP
+	approval. Interfaces for these routines were shamelessly stolen from
+	Itcl.
+
+	* generic/tclBasic.c (TclEvalObjvInternal):
+	* generic/tclDictObj.c (DictUpdateCmd, DictWithCmd):
+	* generic/tclIOGT.c (ExecuteCallback):
+	* generic/tclTrace.c (Trace*Proc,TclCheck*Traces,TclCallVarTraces):
+	Callers of Tcl_*Result updated to call the new routines. The calls
+	were relocated in several cases to perform save/restore operations
+	only when needed.
+
+	* generic/tclEvent.c (HandleBgErrors):
+	* generic/tclFCmd.c (CopyRenameOneFile): Calls to Tcl_*Result that
+	were eliminated because they appeared to serve no useful purpose,
+	typically saving/restoring an error message, only to throw it away.
+
+2004-10-18  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_CreateInterp,Tcl_DeleteInterp):
+	* generic/tclCmdAH.c (Tcl_CatchObjCmd):
+	* generic/tclCmdMZ.c (TclMergeReturnOptions,TclProcessReturn):
+	* generic/tclCompCmds.c (TclCompileReturnCmd):
+	* generic/tclExecute.c (TclCompEvalObj):
+	* generic/tclInt.h (Interp):
+	* generic/tclProc.c (TclUpdateReturnInfo): Place primary storage of
+	the -level and -code information in private fields of the Interp
+	struct, rather than in a DictObj. This should significantly improve
+	performance of TclUpdateReturnInfo.
+
+2004-10-17  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclResult.c: removed unused variable [Bug 1048588]. Thanks
+	to Daniel South.
+
+2004-10-15  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (TclProcessReturn):	Now that primary
+	* generic/tclProc.c (TclUpdateReturnInfo):	storage for the
+	errorInfo and errorCode values are internal fields, we can set them at
+	the time of the [return] command, and not have to wait until the
+	specified number of "-level"s have popped.
+
+	* generic/tclBasic.c (Tcl_CreateInterp, Tcl_DeleteInterp)
+	(TclEvalObjvInternal, Tcl_LogCommandInfo, TclAddObjErrorInfo):
+	* generic/tclCmdAH.c (Tcl_CatchObjCmd):
+	* generic/tclEvent.c (BgError, ErrAssocData, Tcl_BackgroundError)
+	(HandleBgErrors, BgErrorDeleteProc):
+	* generic/tclExecute.c (TclCreateExecEnv, TclDeleteExecEnv):
+	* generic/tclIOUtil.c (comments only):
+	* generic/tclInt.h (ExecEnv,Interp, ERR_IN_PROGRESS):
+	* generic/tclInterp.c ([tclInit]):
+	* generic/tclMain.c (comments only):
+	* generic/tclNamesp.c (Tcl_CreateNamespace, Tcl_DeleteNamespace)
+	(TclTeardownNamespace):
+	* generic/tclProc.c (TclUpdateReturnInfo):
+	* generic/tclResult.c (Tcl_ResetResult, TclTransferResult):
+	* generic/tclTrace.c (CallVarTraces):
+	Reworked management of the "errorInfo" data of an interp. That
+	information is now primarily stored in a new private (Tcl_Obj *) field
+	of the Interp struct, rather than using a global variable ::errorInfo
+	as the primary storage. The ERR_IN_PROGRESS flag bit value is no
+	longer required to manage the value in its new location, and is
+	removed. Variable traces are established to support compatibility for
+	any code expecting the ::errorInfo variable to hold the information.
+
+	***POTENTIAL INCOMPATIBILITY***
+	Code that sets traces on the ::errorInfo variable may notice a
+	difference in timing of the firing of those traces. Code that uses the
+	value ERR_IN_PROGRESS.
+
+2004-10-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	TIP#217 IMPLEMENTATION
+
+	* generic/tclCmdIL.c (Tcl_LsortObjCmd): Add -indices option from James
+	Salsman. [Patch 1017532]
+
+	* generic/tclUtil.c (TclMatchIsTrivial): Detect degenerate cases of
+	glob matching that let us avoid scanning through hash tables.
+	* generic/tclCmdIL.c (InfoCommandsCmd, InfoGlobalsCmd, InfoProcsCmd):
+	(InfoVarsCmd): Use this to speed up some [info] subcommands.
+
+2004-10-12  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/tzdata/America/Campo_Grande:
+	* library/tzdata/America/Cuiaba:
+	* library/tzdata/America/Sao_Paulo
+	* library/tzdata/America/Argentina/Mendoza:
+	* library/tzdata/America/Argentina/San_Juan:
+	Synchronized to Olson's 'tzdata2004e'.
+
+2004-10-08  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	TIP#201 AND TIP#212 IMPLEMENTATIONS
+
+	* doc/dict.n, doc/expr.n: Documentation for new functionality.
+	* tests/expr.test: Basic tests of 'in' and 'ni' behaviour.
+	* tests/dict.test (dict-21.*,dict-22.*): Tests for [dict update] and
+	[dict with].
+	* generic/tclExecute.c (TclExecuteByteCode): Implementation of the
+	INST_LIST_IN and INST_LIST_NOT_IN bytecodes.
+	* generic/tclParseExpr.c (GetLexeme): Parse the 'in' and 'ni'
+	operators for TIP#201.
+	* generic/tclDictObj.c (DictUpdateCmd,DictWithCmd): Core of
+	implementation of TIP#212; docs and tests still to do...
+
+2004-10-07  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclTest.c (TestsetobjerrorcodeCmd):  Simplified.
+
+2004-10-07  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:
+	* generic/tclFileSystem.h:
+	* generic/tclIOUtil.c:
+	* generic/tclPathObj.c:
+	* unix/tclUnixFile.c:
+	* win/tclWinFile.c:
+	* tests/fileName.test:
+	* tests/winFCmd.test: code reorganization for better generic/platform
+	code splitting [Bug 925620] removing the need for several #ifdef's,
+	and tests and fix for an unreported Windows glob problem ('glob -dir
+	C: -tails *').
+
+2004-10-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* *.3: Convert CONST to const and VOID to void so we document how
+	people should actually use the Tcl API and not the compatability hacks
+	that it has to have.
+
+	* doc/man.macros, *.3: Update .AS macro so it can know how wide to
+	make the third column of the argument list. Update documentation for C
+	API (only users) to take advantage of this.
+
+	* doc/FileSystem.3: Formatting fixes for greater documentation
+	clarity.
+
+2004-10-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclFileName.c (DoGlob, TclGlob): Stop messy sharing of
+	interpreter result and instead use a private object for collecting the
+	result of the glob. This simplifies TclGlob quite a lot.
+	* generic/tclIOUtil.c (Tcl_FSMatchInDirectory): Simplify by removing
+	some nesting. Also standardize variable names.
+	(FsAddMountsToGlobResult): Force updates to the list to be done
+	in-place, putting a side-condition of non-shared-ness on the resultPtr
+	argument to Tcl_FSMatchInDirectory, but everything would have broken
+	before if that was shared *anyway*.
+
+	* generic/tclEncoding.c (LoadTableEncoding): Removed reference to Tcl
+	interpreter; it wasn't needed as direct object use is more efficient.
+
+	* generic/tclPathObj.c: Made this file follow the style rules in the
+	Engineering Manual more closely, and also take advantage of the
+	internal object manipulation macros more.
+
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): Reorganized to have fewer
+	magic flag variables and to separate the code that scans for a match
+	from the code that processes a match body.
+
+2004-10-06  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:
+	* generic/tclBinary.c:
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclCompExpr.c:
+	* generic/tclDictObj.c:
+	* generic/tclEncoding.c:
+	* generic/tclExecute.c:
+	* generic/tclFCmd.c:
+	* generic/tclHistory.c:
+	* generic/tclIndexObj.c:
+	* generic/tclInterp.c:
+	* generic/tclIO.c:
+	* generic/tclIOCmd.c:
+	* generic/tclNamesp.c:
+	* generic/tclObj.c:
+	* generic/tclPkg.c:
+	* generic/tclResult.c:
+	* generic/tclScan.c:
+	* generic/tclTimer.c:
+	* generic/tclTrace.c:
+	* generic/tclUtil.c:
+	* generic/tclVar.c:
+	* unix/tclUnixFCmd.c:
+	* unix/tclUnixPipe.c:
+	* win/tclWinDde.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinPipe.c:
+	* win/tclWinReg.c:
+	It is a poor practice to directly set or append to the value of the
+	objResult of an interp, because that value might be shared, and in
+	that circumstance a Tcl_Panic() will be the result. Searched for
+	example of this practice and replaced with safer alternatives, often
+	using the Tcl_AppendResult() routine that dkf just rehabilitated.
+	* library/dde/pkgIndex.tcl: Bump to dde 1.3.1
+	* library/reg/pkgIndex.tcl: Bump to registry 1.1.5
+
+2004-10-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/SetResult.3: Made Tcl_AppendResult non-deprecated; better that
+	people use it than most of the common alternatives!
+	* generic/tclResult.c (Tcl_AppendResultVA): Make this work better with
+	Tcl_Objs. [Patch 1041072]
+	(Tcl_SetResult, Tcl_AppendElement): Change string to stringPtr to
+	avoid C++ keywords.
+
+2004-10-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (TclObjInvoke): More simplification of the
+	TclObjInvoke routine toward unification with the rest of the
+	evaluation stack.
+
+	* generic/tclBasic.c (Tcl_CreateInterp, Tcl_DeleteInterp)
+	(TclEvalObjvInternal, Tcl_LogCommandInfo):
+	* generic/tclCmdAH.c (Tcl_CatchObjCmd):
+	* generic/tclEvent.c (BgError, Tcl_BackgroundError, HandleBgErrors):
+	* generic/tclInt.h (Interp, ERROR_CODE_SET):
+	* generic/tclNamesp.c (Tcl_CreateNamespace, Tcl_DeleteNamespace)
+	(TclTeardownNamespace):
+	* generic/tclResult.c (Tcl_ResetResult, Tcl_SetObjErrorCode)
+	(TclTransferResult):
+	* generic/tclTrace.c (CallVarTraces):
+	Reworked management of the "errorCode" data of an interp. That
+	information is now primarily stored in a new private (Tcl_Obj *) field
+	of the Interp struct, rather than using a global variable ::errorCode
+	as the primary storage. The ERROR_CODE_SET flag bit value is no longer
+	required to manage the value in its new location, and is removed.
+	Variable traces are established to support compatibility for any code
+	expecting the ::errorCode variable to hold the information.
+
+	***POTENTIAL INCOMPATIBILITY***
+	Code that sets traces on the ::errorCode variable may notice a
+	difference in timing of the firing of those traces.
+
+	* generic/tclNamesp.c (Tcl_PopCallFrame): Removed Bug 1038021
+	workaround. That bug is now fixed.
+
+2004-10-04  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/clock.test (clock-34.*): Removed an antibug that forced
+	comparison of [clock scan] results with the :localtime time zone. Now
+	that [clock scan] uses the current time zone instead, the antibug
+	caused several tests to fail. [Bug 1038554]
+
+2004-10-04  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclParseExpr.c (GetLexeme): Ensure that the 'eq' and 'ne'
+	operators are followed by non-alphabetic characters so lexemes can't
+	run together. [Bug 884830]
+
+	* doc/DictObj.3, doc/dict.n: Clarified that a dictionary is not
+	order-preserving. [Bug 1032243] Also added another example to show off
+	more ways of using a dictionary and a few other formatting
+	improvements.
+
+2004-10-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclDictObj.c (TraceDictPath, Tcl_DictObjPutKeyList): Add
+	support for automatic creation of dictionary paths since that is what
+	everyone seems to actually expect of the API! [Bug 1037235]
+	(Tcl_DictObjNext): Make calling this after Tcl_DictObjDone non-fatal
+	as that simplifies a number of internal APIs. This doesn't break any
+	existing working code as it is a case which previously caused a panic.
+
+2004-10-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/namespace.test (namespace-8.7):	Another test for save/restore
+	of ::errorInfo and ::errorCode during global namespace teardown.
+
+2004-10-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclProc.c (TclObjGetFrame, Tcl_UplevelObjCmd):
+	* generic/tclVar.c (Tcl_UpvarObjCmd): Cache stackframe level
+	references in the level object for speed.
+
+2004-09-30  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_CreateInterp):
+	* generic/tclInt.h (Interp): Removed the flag bit value
+	EXPR_INITIALIZED. It was set during interp creation and never tested.
+	Whatever purpose it had is in the past.
+
+	* generic/tclBasic.c (Tcl_EvalObjEx):	Removed the flag bit value
+	* generic/tclInt.h (Interp):	        USE_EVAL_DIRECT. It was used
+	* generic/tcLTest.c (TestevalexObjCmd): only in the testing command
+	* tests/parser.test (parse-9.2):        [testevalex] and nothing in
+	the test suite made use of the capability it enabled.
+
+	* generic/tclBasic.c (Tcl_AddObjErrorInfo): More re-organization
+	* generic/tclCmdAH.c (Tcl_ErrorObjCmd):	    of the management of
+	* generic/tclCmdMZ.c (TclProcessReturn):    the errorCode value.
+	* tests/error.test (error-6.4-9):
+
+	* generic/tclNamespace.c (TclTeardownNamespace): Tcl_Obj-ified
+	* tests/namespace.test (namespace-8.5,6):	 the save/restore of
+	::errorInfo and ::errorCode during global namespace teardown. Revised
+	the comment to clarify why this is done, and added tests that will
+	fail if this is not done.
+
+	* generic/tclResult.c (TclTransferResult): Added safety checks so that
+	unexpected undefined ::errorInfo or ::errorCode will not lead to a
+	segfault.
+
+	* generic/tclTrace.c (TclCallVarTraces):  Save/restore the flag values
+	* tests/var.test (var-16.1):	          that define part of the
+	interpreter state during variable traces. [Bug 1038021].
+
+2004-09-30  Miguel Sofer <msofer@users.sf.net>
+
+	* tests/subst.test (12.1-2): added tests for [Bug 1036649]
+
+2004-09-29  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/basic.test (49.*): New tests for TCL_EVAL_GLOBAL.
+
+2004-09-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclVar.c (TclObjLookupVar, TclObjLookupVar):
+	(TclObjUnsetVar2, SetArraySearchObj):
+	* generic/tclUtil.c (SetEndOffsetFromAny):
+	* generic/tclStringObj.c (Tcl_SetStringObj):
+	(Tcl_SetUnicodeObj, SetStringFromAny):
+	* generic/tclResult.c (ResetObjResult):
+	* generic/tclRegexp.c (Tcl_GetRegExpFromObj):
+	* generic/tclPathObj.c (TclFSMakePathRelative, SetFsPathFromAny):
+	(TclFSMakePathFromNormalized, Tcl_FSNewNativePath):
+	* generic/tclObj.c (TclFreeObj, Tcl_SetBooleanObj, SetBooleanFromAny):
+	(Tcl_SetDoubleObj, SetDoubleFromAny, Tcl_SetIntObj):
+	(SetIntOrWideFromAny, Tcl_SetLongObj, SetWideIntFromAny):
+	(Tcl_SetWideIntObj, TclSetCmdNameObj, SetCmdNameFromAny):
+	* generic/tclNamesp.c (SetNsNameFromAny, MakeCachedEnsembleCommand):
+	* generic/tclListObj.c (Tcl_SetListObj, SetListFromAny):
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct):
+	* generic/tclDictObj.c (SetDictFromAny):
+	* generic/tclCompile.c (TclInitByteCodeObj):
+	* generic/tclBinary.c (Tcl_SetByteArrayObj, SetByteArrayFromAny):
+	* generic/tclInt.h (TclFreeIntRep): Factorize out deletion of object
+	internal representation to a shared macro, so simplifying much code.
+
+2004-09-27  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (TclObjInvoke): fix for bogus gcc warning about
+	uninitialised variable.
+
+2004-09-27  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Removed internal routines TclInvoke,
+	* generic/tclInt.decls: TclGlobalInvoke, TclObjInvokeGlobal and the
+	* tests/basic.test:	portion of TclObjInvoke that handles calls
+	without TCL_INVOKE_HIDDEN enabled. None of this code is called any
+	longer within the core, and the superior public interface,
+	Tcl_EvalObjv, is available for any external callers.
+
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclEvent.c (HandleBgErrors): Updated [bgerror] invocations
+	to make use of Tcl_Obj based routines, dropping the calls to
+	TclGlobalInvoke()
+
+2004-09-27  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:
+	* generic/tclFileSystem.h:
+	* generic/tclIOUtil.c:
+	* generic/tclPathObj.c:
+	* tests/cmdAH.test:
+	* tests/fileSystem.test:
+	* tests/winFCmd.test: fix to bad error message with 'cd' on windows,
+	when permissions are inadequate [Bug 1035462] and to treatment of a
+	volume-relative pwd on Windows [Bug 1018980].
+
+	* doc/FileSystem.3: added missing Tcl_GlobTypeData documentation [Bug
+	935853]
+
+2004-09-27  Kevin Kenny	 <kennykb@acm.org>
+
+	* compat/strftime.c (Removed):
+	* generic/tclClock.c (removed TclClockOldscanObjCmd):
+	* generic/tclDate.c (Regenerated):
+	* generic/tclGetDate.y:
+	* generic/tclInt.decls (removed TclGetDate and TclpStrftime):
+	* generic/tclInt.h (removed TclGetDateInfo):
+	* generic/tclIntDecls.h (Regenerated):
+	* generic/tclStubInit.c (Regenerated):
+	* library/clock.tcl:
+	* unix/tclUnixTime.c (removed TclpStrftime):
+	* win/Makefile.in:
+	* win/makefile.bc:
+	* win/makefile.bc:
+	* win/tcl.dsp:
+	Continued refactoring of [clock] for TIP 173 changes. Broke the
+	free-form parser apart so that the Bison parser is responsible for
+	only parsing, while clock.tcl handles relative times like "next
+	Thursday", "next January". This change is needed to make timezones
+	other than :localtime and :Etc/UTC work with free-form scanning. This
+	change closes out the issue identified as being "for another day" in
+	my log message of 2004-09-08. The refactored code also eliminates the
+	last known references to TclpStrftime and TclGetDate, so those
+	routines (including compat/strftime.c) have been removed. The
+	refactoring also has the benefit that all storage in the Bison parser
+	is now on the C stack, eliminating any need for mutex protection
+	around [clock scan]. Also, changed the Makefiles so that 'make
+	gendate' is available on Windows as well as Unix.
+
+	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Removed some grubby
+	* generic/tclObj.c (SetBooleanFromAny):	 work-around code that was
+	needed only because of Bug 868489.
+
+	* generic/tclBasic.c (TclObjInvoke): Removed three unused variables to
+	silence a compiler warning in VC++.
+
+2004-09-27  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3: fix to small typo.
+
+2004-09-26  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompCmds.c:
+	* generic/tclCompExpr.c:
+	* generic/tclCompile.c:
+	* generic/tclCompile.h:
+	* generic/tclInt.h:
+	* generic/tclProc.c:
+	* tests/compExpr-old.test:
+	* tests/compExpr.test:
+	* tests/expr.test:
+	* tests/for.test:
+	* tests/if.test:
+	* tests/incr.test:
+	* tests/while.test:
+	Report compilation errors at runtime, [Patch 1033689] by dgp.
+
+2004-09-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/dltest/Makefile.in (clean): Fixup make clean rule so that it
+	does not delete all files when SHLIB_SUFFIX is set to the empty string
+	in a static build. [Bug 1016726]
+
+2004-09-23  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Corrections to the 2004-09-21 commit
+	* generic/tclExecute.c:	regarding ERR_ALREADY_LOGGED. That commit
+	* generic/tclNamesp.c:	caused Tk test send-10.7 to fail. Added
+	* tests/namespace.test (25.7,8): tests in the Tcl test suite
+	* tests/pkg.test (2.25,26):	 to catch this error without the aid
+	of Tk in the future.
+
+	* generic/tclCmdAH.c (Tcl_ExprObjCmd):	Simplified the TclObjCmdProc
+	of [expr] with a call to Tcl_ConcatObj.
+
+2004-09-22  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (TclProcessReturn):	Support the -errorline
+	* generic/tclCompile.c (TclCompileScript):	option to [return].
+	* tests/compile.test (16.23.*):	Use that capability to defer reporting
+	* tests/misc.test (1.2):	of parse errors until runtime. Updated
+	tests to reflect change. [Bug 1032805]
+
+2004-09-22  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_START_CMD):
+	* tests/proc.test (7.2-3): fix for [Bug 729692] was incorrect whenever
+	a loop exception was returned.
+
+2004-09-22  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/tzdata/America/Montevideo: Updated to reflect
+	ftp://elsie.nci.nih.gov/pub/tzdata2004d.tar.gz. (Changes to
+	Asia/Jerusalem were in the comments only.) [Routine maintenance - no
+	bug] Spanish-language description of the change at
+	http://www.presidencia.gub.uy/decretos/2004091502.htm
+
+2004-09-21  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCompCmds.c:	Tolerate [append] syntax errors
+	* tests/appendComp.test (8.1):	at compile time, and allow runtime to
+	raise the error (or succeed if a redefined [append] allows).
+
+	* generic/tclBasic.c:	Reworked management of the interp flag
+	* generic/tclCompile.c:	ERR_ALREADY_LOGGED, to reduce its exposure.
+	* generic/tclExecute.c: Still left several referebces that are just
+	* generic/tclNamesp.c:	too nice on performace to do away with.	These
+	changes also resolve an inconsistency in the ::errorInfo values
+	produced by [namespace eval x error foo bar] and [namespace eval x
+	{error foo bar}].
+
+	* generic/tclExecute.c (TclCompEvalObj):	Simplified the
+	TclCompEvalObj routine. Much housekeeping now reliably happens
+	elsewhere. [Patch 1031949]
+
+2004-09-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/interp.n: Tighten up wording on how [interp eval] and [interp
+	invokehidden] operate w.r.t. stack frames. [Bug 926590]
+
+2004-09-20  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/error.test (error-6.2,3):	Added more tests to verify
+	::errorCode setting by/after a [catch].
+
+2004-09-19  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCmdAH.c: removed outdated comment [Bug 1029518].
+
+2004-09-18  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclAppInit.c: Dde package can load into a safe interp. Claim
+	this fact for the Tcl_StaticPackage() call when the shell is built
+	with the TCL_USE_STATIC_PACKAGES option.
+
+2004-09-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclExecute.c (TEBC-INST_LSHIFT,INST_RSHIFT): Ensure that
+	large shifts end up shifting correctly. [Bug 868467]
+
+	* doc/FileSystem.3, doc/OpenFileChnl.3: More documentation fixes from
+	Mikhail Kolesnitchenko. [Patch 1022527]
+	* doc/*: Standardize highlighting of symbols defined in tcl.h
+
+2004-09-17  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_AddObjErrorInfo, Tcl_LogCommandInfo):
+	* generic/tclCmdAH.c ([catch], [error]):
+	* generic/tclCmdMZ.c ([return]):
+	* generic/tclProc.c (TclUpdateReturnInfo):
+	* generic/tclResult.c (Tcl_SetErrorCodeVA, Tcl_SetObjErrorCode)
+	(TclTransferResult):	Refactored so that all errorCode setting flows
+	through Tcl_SetObjErrorCode(). This greatly reduces the number of
+	different places in the code that need to know details about an
+	internal bitflag field of the Interp struct. Also places errorCode
+	setting in one place for easier future mods.
+
+2004-09-17  Kevin B.Kenny  <kennykb@acm.org>
+
+	* generic/tclDate.c:	Revised tclGetDate.y to use bison instead of
+	* generic/tclGetDate.y: yacc to build the parser, eliminating all the
+	* generic/tclInt.h:	complicated hackery involving 'sed'
+	* unix/Makefile.in:	postprocessing. Rebuilt the parser.
+
+2004-09-14  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclClock.c (ClockOldscanObjCmd): Silenced a compiler warning
+	(long passed as a param where unsigend long was expected). 'Unsigned
+	long' is wrong, but the fix is really to change the signature of
+	TclGetDate to return a structure of its 'yy' variables and then do the
+	remaining work inside clock.tcl. But, as I said on 2004-09-08, that's
+	a job for another day. [Bug 1027993]
+
+2004-09-10  Miguel Sofer <msofer@users.sf.net>
+
+	* doc/interp.n:
+	* generic/tclInterp.c (TclPreventAliasLoop, AliasCreate):
+	* tests/interp.test (17.4-6, 19.3-4): fixing problems with renaming of
+	aliases [Bugs 707104 1026493]. Fix designed by dgp.
+
+2004-09-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (NsEnsembleImplementationCmd): Add token field
+	to internal rep of EnsembleCmdRep structure so that we can check it to
+	see if the subcommand object is really being used with the same
+	ensemble. [Bug 1026903]
+
+2004-09-11  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclClock.c (TclMktimeObjCmd): Corrected a bad check for
+	error return from 'mktime'.
+	* generic/tclObj.c (Tcl_GetIntFromObj): Corrected a problem where
+	demoting a wide to an int failed on a big-endian machine. [Bug
+	1026125].
+	* tests/clock.test (clock-43.1): Added regression test for error
+	return from 'mktime'.
+
+2004-09-11  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_CONCAT1): fix for [Bug 1025834]; avoid
+	unnecessary string copies.
+
+2004-09-10  David Gravereaux <davyrgvy@pobox.com>
+
+	* tests/tcltest.test: tcltest-12.3-4 needed to have
+	::tcltest::loadScript set to empty in their -setup
+
+2004-09-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclObj.c (SetIntOrWideFromAny): Rewritten integral value
+	parsing code so that values do not flip so easily between numeric
+	representations. Thanks to KBK for this! [Bug 868489]
+
+	* generic/tclIO.c (Tcl_Seek): Make sure wide seeks do not fail to set
+	::errorCode on error. [Bug 1025359]
+
+2004-09-10  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tcl.h: Micro formatting fixes.
+	* generic/tclIOGT.c: Channel version fixed, must be 3, to have
+	wideseekProc. Thanks to David Graveraux <davygrvy@pobox.com>.
+
+2004-09-11  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclNamespace.c (TclGetNamespaceForQualName): Resolved
+	longstanding inconsistency in the treatment of the TCL_NAMESPACE_ONLY
+	flag revealed by testing the 2004-09-09 commits against Itcl.
+	TCL_NAMESPACE_ONLY now acts as specified in the pre-function comment,
+	forcing resolution in the passed in context namespace. It has been
+	incorrectly forcing resolution in the interp's current namespace.
+
+2004-09-10  Kevin Kenny	 <kennykb@acm.org>
+
+	* library/clock.tcl: Fixed a bug where %z always put a plus sign on
+	the time zone in :localtime.
+	* tests/clock.test: Added test case for the above bug.
+
+2004-09-10  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_CONCAT1): added a peephole optimisation
+	for concatting an empty string. This enables replacing the idiom 'K $x
+	[set x {}]' by '$x[set x {}]' for fastest execution.
+
+2004-09-09  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinConsole.c: Calls to WriteFile and WriteConsoleA changed to
+	WriteConsole for simplicity.
+
+2004-09-09  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclNamesp.c (Tcl_ForgetImport):	Corrected faulty
+
+	* tests/namespace.test: logic that relied exclusively on string
+	matching and failed in the presence of [rename]s. [Bug 560297] Also
+	corrected faulty prevention of [namespace import] cycles. [Bug 1017299]
+
+2004-09-08  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_CreateInterp):	Removed obsolete field
+	for storing the string-based command procedure of built-in commands.
+	We no longer have any string-based built-in commands!
+
+2004-09-08  Kevin B. Kenny <kennykb@acm.org>
+
+	* compat/strftime.c (_conv): Corrected a problem where hour 0 would
+	format as a blank format group with %k.
+	* doc/clock.n: Corrected a buglet in the header information. [Bug
+	1024058]
+	* generic/tclClock.c (TclClockMktimeObjCmd): Fixed a bug where the
+	month was scanned incorrectly in -timezone :localtime.
+	* tests/clock.test (clock-34.*,clock-40.1, clock-41.1): Adjusted the
+	clock-34.* test cases so that the consistency check is performed in
+	:localtime rather than the current time zone. This change allows
+	dealing with issues where the C library has a different idea of DST
+	conversion than Tcl. (Real fix would be to break TclGetDate into
+	separate parser and time converter, and do the time conversion in
+	clock.tcl. That's for another day.) Added regression test case for the
+	bug where month was scanned incorrectly in -timezone :localtime. [Bug
+	1023779] Added regression test case for %k at the zero hour.
+
+2004-09-07  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: some quoting needed to be removed as it was
+	breaking with VC7. [Bug 1023150]
+
+2004-09-07  Kevin B. Kenny  <kennykb@acm.org>
+
+	* doc/clock.n: Documented the default -format, and changed references
+	to a (nonexistent) msgcat command to refer to the msgcat package. [Bug
+	1023870]
+	* generic/tclTimer.c: Removed a premature optimisation that attempted
+	to store the assoc data in the client data; the optimisation caused a
+	bug that [after] would overwrite its imports. [Bug 1016167]
+	* library/clock.tcl (InitTZData, ClearCaches): Changed so that the
+	in-memory time zone :UTC (and its aliases) always gets reinitialised,
+	in case tzdata is absent. [Bug 1019537, 1023779]
+	* library/tzdata/*: Regenerated.
+	* tests/clock.test (clock-31.*, clock-39.1): Corrected a problem where
+	the 'system' locale tests fail on a non-English Windows machine. [Bug
+	1023761]. Added a test to make sure that alias time zones load
+	correctly. [Bug 1023779].
+	* tests/timer.test (timer-1.1, timer-2.1): Changed to (one hopes!) be
+	more resilient on an overloaded system, if [after 200] sleeps for 300
+	ms or longer.
+	* tools/tclZIC.tcl (writeLinks): Corrected a problem where alias time
+	zone names were written incorrectly, causing them to fail to load at
+	run time. [Bug 1023779].
+	* win/tclWinTime.c (Tcl_GetTime): Eliminated CPUID tests on Win64 -
+	assuming that HAL vendors now do a better job of keeping the
+	performance counters synchronized among CPU's. [Bug 1020445]
+
+2004-09-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/tclvars.n, doc/tcltest.n, doc/tclsh.1, doc/safe.n, doc/expr.n
+	* doc/WrongNumArgs.3, doc/Utf.3, doc/TraceVar.3, doc/Thread.3
+	* doc/TCL_MEM_DEBUG.3, doc/SubstObj.3, doc/StdChannels.3
+	* doc/SetResult.3, doc/RegExp.3, doc/RegConfig.3, doc/RecEvalObj.3
+	* doc/PrintDbl.3, doc/ParseCmd.3, doc/Panic.3, doc/ObjectType.3
+	* doc/Object.3, doc/Namespace.3, doc/Interp.3, doc/IntObj.3
+	* doc/Hash.3, doc/GetOpnFl.3, doc/GetIndex.3, doc/Eval.3
+	* doc/Encoding.3, doc/DoubleObj.3, doc/DictObj.3, doc/CrtTimerHdlr.3
+	* doc/CrtObjCmd.3, doc/CrtMathFnc.3, doc/CrtCommand.3, doc/CrtChannel.3
+	* doc/ChnlStack.3, doc/ByteArrObj.3, doc/AssocData.3, doc/Alloc.3:
+	More documentation fixes from Mikhail Kolesnitchenko. [Patch 1022527]
+
+2004-09-03  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tclUnixFCmd.c: Stop NULL interp arguments from triggering a
+	crash when an error happens. [Bug 1020538]
+
+2004-09-02  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lsearch.n: Clarified meaning of -dictionary. [Bug 759545]
+
+2004-09-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/makefile.vc: clock.tcl needs to be installed.
+
+2004-09-01  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/tclWinReg.c (BroadcastValue): WIN64 cast corrections
+
+	* win/tclWinDde.c (DdeClientWindowProc):
+	(DdeServicesOnAck, DdeEnumWindowsCallback): WIN64 corrections
+
+	* win/tclWin32Dll.c (TclWinCPUID): need _asm for WIN64 (Itanium),
+	until we have it, just return unknown. [Bug 1020445]
+
+2004-09-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/regsub.n, doc/RegConfig.3, doc/Environment.3:
+	* doc/CrtChannel.3, doc/safe.n: Use correct abbreviations.
+
+2004-08-31  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/trace.n, doc/socket.n, doc/registry.n, doc/pid.n:
+	* doc/namespace.n, doc/msgcat.n, doc/lsort.n, doc/lsearch.n:
+	* doc/linsert.n, doc/info.n, doc/http.n, doc/history.n:
+	* doc/format.n, doc/file.n, doc/exec.n, doc/dde.n, doc/clock.n:
+	* doc/catch.n, doc/binary.n: More spelling and grammar fixes from
+	Mikhail Kolesnitchenko. [Patch 1018486]
+
+2004-08-31  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3:
+	* generic/tclIOUtil.c: Clarified documentation regarding ability of a
+	filesystem to say that it doesn't support a given operation using the
+	EXDEV posix error code (copyFileProc, renameFileProc, etc), and
+	updated one piece of code to ensure correct behaviour when an
+	operation is not supported [Bug 1017072]
+
+	* tests/fCmd.test: fix to test suite problem [Bug 1002884]
+
+2004-08-31  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/Makefile.in (install-libraries): portable sh fix.
+
+2004-08-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): Stop [string map] from
+	crashing when its map and input string are the same object.
+
+2004-08-27  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (FindEnsemble): Factor out the code to convert a
+	command name into an ensemble configuration and add support for
+	ignoring [namespace import] link chains. [Bug 1017022]
+	(NamespaceWhichCmd): Rework to use newer option parsing API.
+
+2004-08-27  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/Makefile.in: added customization of default module path roots
+	via TCL_MODULE_PATH makefile variable.
+	* macosx/Makefile: add platform standard locations to default module
+	path roots. [Patch 942881]
+
+	* tests/env.test: macosx fixes.
+
+2004-08-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/timer.test (timer-10.1):	Test for Bug 1016167.
+	* generic/tclTimer.c: Workaround for situation when a [namespace
+	import] causes the objv[0] value to be something other than what
+	Tcl_AfterObjCmd expects. [Bug 1016167].
+
+2004-08-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (NsEnsembleImplementationCmd): Use the ensemble
+	command token to get the name of the ensemble for passing to the
+	-unknown handler instead of relying on objv[0], which may contain
+	useless info in the presence of [namespace import]. Problem found by
+	Don Porter when investigating [Bug 1016167].
+
+2004-08-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclProc.c:		The routine TclProcInterpProc was a
+	* generic/tclTestProcBodyObj.c: specific instance of the general
+	service already provided by TclObjInvokeProc. Removed
+	TclProcInterpProc and TclGetInterpProc from the code...
+
+	* generic/tclInt.decls:	...and from the internal stubs table.
+	* generic/tclIntDecls.h
+	* generic/tclStubInit.c
+
+2004-08-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/string.n: Added clarifying note.
+
+2004-08-23  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/auto.tcl:	Updated [tcl_findLibrary] search path to
+	include any [<pkg>::pkgconfig get scriptdir,runtime] directory, as
+	well as the $::auto_path. [RFE 695441]
+
+2004-08-21  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/clock.test (clock-38.1): Changed TZ setting to specify CET in
+	excruciating detail to deal with systems that lack the Posix defaults
+	for DST changes (and to be formally correct with the change dates for
+	CET).
+
+2004-08-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclScan.c (Tcl_ScanObjCmd, ValidateFormat): Ensure that the
+	%ld conversion works correctly on 64-bit platforms. [Bug 1011860]
+
+2004-08-19  Kevin Kenny	 <kennykb@acm.org>
+
+	* library/clock.tcl (format): Changed default timezone format from
+	alphabetic to numeric to produce scannable times in more locales.
+	* tests/clock.test (clock-37.1): Removed now-unused 'needPST'
+	constraint and the comments that refer to it.
+
+2004-08-18  Andreas Kupries  <andreask@activestate.com>
+
+	* library/init.tcl: Integrated TIP #189. We source a separate file
+	(see below), instead of inlining the contents of that file. This
+	should beeasier to maintain, and easier to backport/install in 8.4
+	installations.
+
+	Note: Usage of Tcl Modules is restricted to non-safe interps. It
+	cannot be loaded into a safe interp.
+
+	* library/tm.tcl: New file, the v2 reference implementation for TIP
+	#189, Tcl Modules.
+
+	* doc/tm.n: New file, documentation for Tcl Modules, based on the TIP.
+
+	* unix/mkLinks: Regenerated.
+	* win/makefile.vc: Added tm.tcl to list of files to install.
+
+2004-08-18  Kevin Kenny	 <kennykb@acm.org>
+
+	* tests/httpd (httpdRespond): Corrected an abuse of the [clock]
+	command that caused test failures for some values of [clock clicks].
+
+	* doc/clock.n
+	* generic/tclBasic.c (Tcl_CreateInterp, Tcl_HideUnsafeCommands):
+	* generic/tclClock.c (all):
+	* generic/tclInt.h:
+	* generic/tclInterp.c (CreateSlave):
+	* library/clock.tcl: (new file)
+	* library/init.tcl (clock):
+	* library/msgs/*.msg:(new files)
+	* library/tzdata/*:
+	* library/tzdata/*/*:
+	* library/tzdata/*/*/*: (new files)
+	* tools/installData.tcl: (new file)
+	* tools/loadICU.tcl: (new file)
+	* tools/makeTestCases.tcl: (new file)
+	* tools/tclZIC.tcl: (new file)
+	* unix/Makefile.in:
+	* unix/configure: (regenerated)
+	* unix/tcl.m4:
+	* tests/clock.test (all):
+	* win/Makefile.in:
+	* win/Makefile.vc:
+		Implementation of TIPs #173 and #209.
+
+	The [clock] command is now a Tcl ensemble, with most of its
+	functionality written in Tcl and callouts to C code only to access
+	low-level functions such as localtime, mktime and tzset.
+
+	In addition to the functionality changes called out in the two TIPs,
+	it is worth noting that the [clock] command in a safe slave
+	interpreter is now an alias to the [clock] command in the master, and
+	that [clock] is otherwise not expected to function entirely correctly
+	in safe interps. C code that simply does Tcl_MakeSafe needs to be
+	aware that [clock] may need special handling. (It appears unlikely
+	that such code actually exists.)
+
+	One incompatibility of note is that if the time zone cannot be
+	determined from the TZ, TCL_TZ environment variables, or from the
+	Windows control panel, so that the C library must be used for date and
+	time conversions, then times outside the range of time_t will fail;
+	they used to return bad data silently.
+
+	Many thanks to all the many people who assisted with testing,
+	debugging, criticism of the specification, and localisation. Deserving
+	of particular mention are Joe English, Clif Flynt, Donal K. Fellows,
+	Jeff Hobbs, Cameron Laird, Arjen Markus, Reinhard Max, Christopher
+	Nelson, Steve Offutt, Donald G. Porter, Pascal Scheffers, Peter da
+	Silva and Richard Suchenwirth-Bauersachs.
+
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2004-08-16  Miguel Sofer <msofer@users.sf.net>
+
+	* doc/SetVar.3:
+	* generic/tclTest.c (TestseterrorcodeCmd):
+	* generic/tclVar.c (TclPtrSetVar):
+	* tests/result.test (result-4.*, result-5.*): [Bug 1008314] detected
+	and fixed by dgp.
+
+2004-08-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/msgcat/msgcat.tcl:	Added checks to prevent [mclocale]
+	* tests/msgcat.test:	from registering filesystem paths to possibly
+	malicious code to be evaluated by a later [mcload].
+
+2004-08-10  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* unix/tclUnixThrd.c (TclpThreadCreate): changed handling of the
+	returned thread ID since broken on 64-bit systems (Cray). Thanks to
+	Rob Ratcliff for reporting the bug.
+
+2004-08-03  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (MakeCachedEnsembleCommand): Initialize the
+	epoch field cached in the subcommand. [Bug 989298]
+	(NsEnsembleImplementationCmd): Plug a leak (thanks to Miguel Sofer for
+	spotting it with valgrind) and reduce the number of goto labels to
+	make the code clearer.
+
+2004-08-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/package.tcl (pkg_mkIndex):	Updated [pkg_mkIndex] to make
+	use of [glob -directory $dir -tails] and return options.
+
+	TIP#207 IMPLEMENTATION
+
+	* doc/interp.n:		Added support for a -namespace option to the
+	* generic/tclBasic.c:	[interp invokehidden] command.	Also added an
+	* generic/tclInt.h:	internal routine TclObjInvokeNamespace() and
+	* generic/tclInterp.c:	corrected the flag names TCL_FIND_ONLY_NS and
+	* generic/tclNamesp.c:	TCL_CREATE_NS_IF_UNKNOWN that are passed to the
+	* generic/tclTrace.c:	internal routine TclGetNamespaceForQualName().
+	* tests/interp.test:	[Patch 981841]
+
+	* generic/tclLiteral.c (TclCleanupLiteralTable):	Corrected
+	* tests/compile.test (compile-12.4):	flawed deletion of literal
+	internal reps that could lead to accessing of freed memory. Thanks to
+	Kevin Kenny for test case and fix [Bug 1001997].
+
+2004-07-30  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/safe.test (safe-2.1):  Disabled senseless test.	 [Bug 999612]
+
+	* library/auto.tcl (auto_reset):  Removed "protected" list of commands
+	from [auto_reset]. All entries in the auto_index can be re-loaded.
+	* library/package.tcl: Updated comment to reflect 2004-07-28 commit.
+
+	* generic/tclEvent.c (Tcl_Finalize):	Re-organized Tcl_Finalize so
+	that Tcl_ExitProc's that call Tcl_Finalize recursively do not cause
+	deadlock. [Patch 999084 fixes Tk Bug 714956]
+
+2004-07-30  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/configure:
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS): Darwin: instead of setting PLAT_OBJS
+	to explict object files in tcl.m4, refer to MAC_OSX_OBJS makefile var.
+	* unix/Makefile.in: added MAC_OSX_OBJS variable.
+
+2004-07-29  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/package.tcl: [::pkg::create] is now an alias. Test safe-2.1
+	will now fail until Bug 999612 is corrected.
+
+2004-07-28  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/package.tcl:		Moved private command
+	* library/tclIndex:		[pkg_compareExtension] into ::tcl::Pkg.
+	* tests/pkg_mkIndex.test:	Also moved implementation of
+	[::pkg::create] to [::tcl::Pkg::Create].
+
+2004-07-25  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* tests/io.test: Make io-61.1 create file as binary to pass on Win32
+
+2004-07-23  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c: simplify tclLocalVarNameType, removing the
+	reference to the corresponding proc. The reference is now seen as
+	unnecessary, and it may cause leaking circular references under some
+	circumstances (see for example [Bug 994838]).
+
+2004-07-22  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/eofchar.data (removed): Test io-61.1 now generates its own
+	* tests/io.test:	file of test data as needed.
+
+2004-07-20  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclEvent.c:	    Correct threaded obj allocator to
+	* generic/tclInt.h:	    fully cleanup on exit and allow for
+	* generic/tclThreadAlloc.c: reinitialization. [Bug 736426]
+	* unix/tclUnixThrd.c:	    (mistachkin, kenny)
+	* win/tclWinThrd.c:
+
+2004-07-21  Kevin Kenny	 <kennykb@acm.org>
+
+	* generic/tclBasic.c (DeleteInterpProc):
+	* generic/tclLiteral.c (TclCleanupLiteralTable):
+	* generic/tclInt.h: added a TclCleanupLiteralTable function, called
+	from DeleteInterpProc, that frees internal representations of shared
+	literals early when an interpreter is being deleted. This change
+	corrects a number of memory mismanagement issues in the cases where
+	the internal representation of one literal contains a reference to
+	another, and avoids conditions such as resolved variable names
+	referring to procedure and namespace contexts that no longer exist.
+	[Bug 994838]
+
+2004-07-20  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/Makefile.in:
+	* win/Makefile.in: added 'install-private-headers' makefile target to
+	allow optionally installing private tcl headers. [FR 922727]
+
+	* macosx/Makefile: use new 'install-private-headers' target to install
+	private headers into framework. [FR 922727]
+
+	* unix/tclUnixFile.c (NativeMatchType): added support for readonly
+	matching of user immutable files (where available).
+
+	* macosx/tclMacOSXBundle.c: dynamically acquire address for
+	CFBundleOpenBundleResourceMap symbol, since it is only present in full
+	CoreFoundation on Mac OS X and not in CFLite on pure Darwin.
+
+2004-07-19  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* win/tclwinThrd.c: redefined MASTER_LOCK to call TclpMasterLock.
+	Fixes [Bug 987967]
+
+2004-07-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to rare 'cd' infinite loop in normalization
+	with vfs [Bug 991420].
+	* tests/fileSystem.test: added test for above bug.
+
+	* doc/FileSystem.3: clarified documentation of posix error codes in
+	'remove directory' FS proc - 'EEXIST' is used to signify a non-empty
+	directory error (bug reported against tclvfs).
+
+2004-07-16  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/Makefile.in, unix/tcl.m4:     move (C|LD)FLAGS after their
+	* unix/configure.in, unix/configure: _DEFAULT to allow for env setting
+	to override m4 switches. Move SC_MISSING_POSIX_HEADERS up and
+	consolidate calls to limit redundancy in configure.
+	(CFLAGS_WARNING): Remove -Wconversion
+	(SC_ENABLE_THREADS): Set m4 to force threaded build when built against
+	a threaded Tcl core.
+
+2004-07-16  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIOCmd.c (Tcl_FcopyObjCmd): Corrected a typo in the
+	generation of error messages and simplified by reusing data in a
+	variable instead of retrieving the string again. Fixes [Bug 835289].
+
+	* doc/OpenFileChnl.3: Added description of the behaviour of
+	Tcl_ReadChars when its 'charsToRead' argument is set to -1. Fixes [Bug
+	934511].
+
+	* doc/CrtCommand.3: Added note that the arguments given to the command
+	proc of a Tcl_CreateCommand are in utf8 since Tcl 8.1. Closing [Patch
+	414778].
+
+	* doc/ChnlStack.3: Removed the declaration that the interp argument to
+	Tcl_(un)StackChannel can be NULL. This fixes [Bug 881220], reported by
+	Marco Maggi <marcomaggi@users.sourceforge.net>.
+
+	* tests/socket.test: Accepted two new testcases by Stuart Casoff
+	<stwo@users.sourceforge.net> checking that -server and -async don't go
+	together [Bug 796534].
+
+	* unix/tclUnixNotfy.c (NotifierThreadProc): Accepted Joe Mistachkin's
+	patch for [Bug 990500], properly closing the notifier thread when its
+	exits.
+
+2004-07-15  Andreas Kupries  <andreask@activestate.com>
+
+	* unix/tclUnixThrd.c (TclpFinalizeMutex): Accepted Joe Mistachkin's
+	patch for [Bug 990453], closing leakage of mutexes. They were not
+	destroyed properly upon finalization.
+
+2004-07-15  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.h (CHANNEL_INCLOSE):	   New flag. Set in
+	* generic/tclIO.c (Tcl_UnregisterChannel): 'Tcl_Close' while the
+	* generic/tclIO.c (Tcl_Close):		   close callbacks are
+	run. Checked in 'Tcl_Close' and 'Tcl_Unregister' to prevent recursive
+	call of 'close' in the close-callbacks. This is a possible error made
+	by implementors of virtual filesystems based on 'tclvfs', thinking
+	that they have to close the channel in the close handler for the
+	filesystem.
+
+2004-07-14  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c:
+	* generic/tclIO.h:
+	* Not reverting, but #ifdef'ing the changes from May 19, 2004 out of
+	the core. This removes the ***POTENTIAL INCOMPATIBILITY*** for channel
+	drivers it introduced. This has become possible due to Expect gaining
+	a BlockModeProc and now handling blockingg and non-blocking modes
+	correctly. Thus [SF Tcl Bug 943274] is still fixed if a recent enough
+	version of Expect is used.
+
+	* doc/CrtChannel.3: Added warning about usage of a channel without a
+	BlockModeProc.
+
+2004-07-15  Andreas Kupries  <andreask@pliers.activestate.com>
+
+	* generic/tclIOCmd.c (Tcl_PutsObjCmd): Added length check to the old
+	depreceated newline syntax, to ensure that only "nonewline" is
+	accepted. [Tcl SF Bug 985869], reported by Joe Mistachkin
+	<mistachkin@users.sourceforge.net>.
+
+2004-07-15  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* generic/tclEvent.c (Tcl_Finalize): stuffed memory leak incurred by
+	re-initializing of TSD slots after the last call to
+	TclFinalizeThreadData (done from within Tcl_FinalizeThread()). We
+	basically just repeat the TclFinalizeThreadData() once more before
+	tearing down TSD keys in TclFinalizeSynchronization(). There should be
+	more elaborate mechanism in place for handling such issues, based on
+	thread cleanup handlers registered on the OS level. Such change
+	requires much more work and would also require TIP because some
+	visible parts of Tcl API would have to be modified. In the meantime,
+	this will do.
+
+	* generic/tclNotify.c (TclFinalizeNotifier): Added conditional
+	notifier finalization based on the fact that an TclInitNotifier has
+	been called for the current thread. This fixes the [Bug 770053] again.
+	Hopefully this time w/o unwanted side-effects.
+
+2004-07-15  Kevin Kenny	 <kennykb@acm.org>
+
+	* generic/tclLiteral.c (TclReleaseLiteral): Removed unused variable
+	'codePtr' to silence a message from VC++.
+
+2004-07-15  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclCompileScript):
+	* generic/tclLiteral.c (TclReleaseLiteral): fix for [Bug 467523],
+	which resurfaced with the latest changes. The previous strategy was to
+	have special code in TclReleaseLiteral to handle the self-references
+	generated by empty scripts. The new approach avoids the self-reference
+	altogether, by having empty scripts return an unshared literal.
+
+2004-07-15  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* generic/tclEvent.c (NewThreadProc): Backout of changes to fix the
+	[Bug 770053]. See SF bugreport for more info.
+
+2004-07-11  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_EvalEx): leak fix by dgp, release
+	objv[objectsUsed] on error.
+
+2004-07-11  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclParse.c (Tcl_SubstObj): leak fix by dgp, release result
+	on error.
+
+2004-07-11  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (BuildEnsembleConfig): Don't forget to clean out
+	references when deleting the hash table.
+	* generic/tclDictObj.c (Tcl_DictObjRemoveKeyList): Oops, forgot to
+	delete value object when removing the hash entry. [Bug 989093 in part]
+
+2004-07-11  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (TEBC): fixed leak of expandNestList objs when
+	there is an error while an expansion is in progress (code added at
+	checkForCatch).
+
+2004-07-11  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to 'cd' bug when vfs is active [tclvfs Bug
+	986944] - this bug recently introduced by some threading fixes. Need
+	to work out how to add tests for this.
+
+2004-07-10  Kevin Kenny	 <kennykb@acm.org>
+
+	* tests/clock.test (clock-2.11): Changed the test so that it isn't an
+	infinite loop when run under valgrind on a slow virtual machine.
+	Thanks to Miguel Sofer for the bug report. Also put in code to restore
+	env(LC_TIME) after tests complete, silencing a warning from 'make
+	TESTFLAGS="-debug 1" test'.
+
+2004-07-08  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (DeleteInterpProc): reverted the modification of
+	3 days ago, as the leak of [Bug 983660] is now handled by the change
+	in TclCleanupByteCode.
+	* generic/tclCompile.c (TclCleanupByteCode): let each bytecode remove
+	its references to literals at interp deletion, without updating the
+	dying literal table.
+	* generic/tclLiteral.c (TclDeleteLiteralTable): with the above change
+	to TclCleanupByteCode, this function now removes a single reference to
+	the literal object and cleans up its own structures.
+
+2004-07-08  Kevin Kenny	 <kennykb@acm.org>
+
+	* win/tclWinInit.c (AppendEnvironment): Silenced a compilation warning
+	about a type mismatch.
+
+2004-07-07  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclCompileScript): fix for [Bug 458361].
+	Single-word scripts are compiled with an unshared cmdName to avoid
+	shimmering between bytecode and cmdName reps.
+
+2004-07-07  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (TclMergeReturnOptions):  Simplified logic and
+	removed potential memory leak. [Bug 986257].
+
+2004-07-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tools/man2help2.tcl (setTabs, IPmacro): Added support for the more
+	advanced *roff macros used in Tk's doc/bind.n
+
+	* generic/tclObj.c (TclInitObjSubsystem): Declare all current object
+	types.
+
+2004-07-06  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/cmdMZ.test (cmdMZ-return-2.17): Added a test that a word
+	containing backslash-quoted value is treated correctly.
+
+	* generic/tclCompile.c (TclWordKnownAtCompileTime): [Bug 986196]
+	Corrected flaw above and the flaw that caused TCL_TOKEN_SIMPLE_WORDs
+	to have their original word value copied ( "{a b}" ) rather than the
+	actual value ( "a b" ). Thanks to Kevin Kenny for report and tests.
+
+2004-07-06  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/cmdMZ.test (cmdMZ-return-2.15,cmdMZ-return-2.16): Added a test
+	that a return code containing spaces is correctly returned.
+
+2004-07-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tools/man2html2.tcl (IPmacro, setTabs): Added support for the more
+	advanced *roff macros used in Tk's doc/bind.n
+
+2004-07-05  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (DeleteInterpProc): fix for [Bug 983660], found
+	by pspjuth. Tear down the global namespace before freeing the interp
+	handle, to allow the bytecodes to free their non-shared literals.
+	* generic/tclLiteral.c (TclReleaseLiteral): moved special code for
+	self-ref so that it is also used for non-shared literals. Possible bug
+	found by inspection.
+
+2004-07-03  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (ExprRoundFunc):
+	* tests/expr-old.test (39.1): added support for wide integers to
+	round(); [Bug 908375], reported by Hemang Lavana.
+
+2004-07-03  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.h:
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.c: Moved declaration of TclCompEvalObj() from
+	tclCompile.h to the internal stubs table, for compiler
+	experimentation.
+
+2004-07-02  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/regcomp.c (stid): correct minor pointer size error
+
+	* generic/tclPipe.c (TclCreatePipeline): applied TIP #202 patch that
+	* doc/exec.n, tests/exec.test:		 adds 2>@1 as a special case
+	redirection of stderr to the result output.
+
+2004-07-02  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/io.test: Changed several tests to run the event loop rather
+	than just calling [update] periodically, avoiding intermittent
+	failures (usually in io-29.32) that stemmed from unreaped processes on
+	Windows.
+	* tests/winPipe.test (winpipe-1.11): Fixed a bug that caused test to
+	fail if the path name of the working directory contained whitespace
+	[Bug 678430]
+
+2004-07-01  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fileSystem.test: Added test for [Bug 970529]
+
+2004-07-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* win/README.binary, win/README: Updated references to Tcl and Tk 8.4
+	to point to 8.5 instead. Thanks to Theo Verelst for spotting this.
+	* generic/tcl.h: Added note to help prevent those changes from getting
+	missed in the future.
+
+	* doc/Namespace.3, doc/load.n, doc/Limit.3: Typo fixes and remove
+	duplicate documentation. [Bug 983146]
+
+2004-06-30  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/fileSystem.test: Minor correction to new fileSystem-9.X tests
+	so that they clean up temporary directories correctly.
+
+2004-06-30  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/filename.n: clarified behaviour concerning trailing slashes in
+	filenames [Bug 971976]
+
+	* win/tclWinFile.c:
+	* tests/fileSystem.test: fix and tests for [Bug 979879]
+
+2004-06-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	TIP#188 IMPLEMENTATION
+
+	* doc/string.n, tests/string.test:	 Add 'wideinteger' to things
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): that can be tested for with
+	the [string is] subcommand. [Patch 940915, by Kevin Kenny]
+
+2004-06-29  Don Porter	<dgp@users.sourceforge.net>
+
+	* win/tclWinInit.c:	Corrected reference counting flaw in recent
+	changes. Thanks to Pat Thoyts. [Bug 981893].
+
+2004-06-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWin32Dll.c: fix to compilation with VC++ 5.2
+
+2004-06-29  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* library/safe.tcl: Make sure that the temporary variable is local to
+	the namespace and not inadvertently global. [Bug 981733]
+
+2004-06-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/unixNotfy.test: Modified constraints so that testing with a
+	threaded tclsh (not tcltest) will not hang.
+
+2004-06-23  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclThreadStorage.c: Corrected type casting errors that led
+	to calculation of a negative index value, thus accesses outside the
+	threadStorageCache array, thus memory corruption. Crash observed on
+	Mac OS X platform.
+
+2004-06-23  Joe Mistachkin  <joe@mistachkin.com>
+
+	* generic/tclThread.c: Implements platform independent thread storage
+	* generic/tclThreadStorage.c: mechanism and fixes associated bugs on
+	platforms where there is limited thread local storage space
+	(Win98/WinNT4). [Patch 976496]
+
+	* generic/tclInt.decls:
+	* generic/tclIntDecls.h: Added thread storage functions to the
+	* generic/tclStubInit.c: internal stubs table.
+
+	* unix/Makefile.in:
+	* unix/configure:
+	* unix/tcl.m4:
+	* win/makefile.vc:
+	* win/rules.vc:
+	* win/Makefile.in: Modified the unix, VC++, and Cygwin build systems
+	* win/configure: to include the new "tclThreadStorage.c" and the new
+	* win/tcl.m4: USE_THREAD_STORAGE define.
+
+2004-06-23  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* tests/io.test: Added -force to 18.1 and 18.2. This was failing on
+	WinXP.
+
+	* tests/winFCmd.test: Added a cleanup to winFCmd-16.11 to avoid a
+	failure in 16.12.
+
+	* tests/eofchar.data: Added -kb option to ensure a binary checkout to
+	win32 systems. This fixes a failure in io-61.1
+
+	* win/makefile.vc: fix for [Bug 977369] about launching tclsh to
+	generate a tclConfig.sh with the nmake build system
+
+2004-06-23  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/winDde.test (createChildProcess): Added a 200-ms delay (with
+	the event loop live) when shutting down the test DDE server process.
+	With the delay in place, nuisance failures of tests winDde-4.2, -6.5,
+	and -6.6 appear to be much less frequent. [Bug 957449]
+
+2004-06-23  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/*.test: Standardize use of platform constraints.
+
+	* unix/tclUnixInit.c (GetStackSize, TclpCheckStackSpace):
+	* unix/tclUnixThrd.c (TclpThreadGetStackSize): Added code to check
+	whether the C stack is about to be exceeded, from [Patch 746378] by
+	Joe Mistachkin but with substantial revisions.
+
+2004-06-22  Kevin Kenny	 <kennykb@acm.org>
+
+	* generic/tclEvent.c (NewThreadProc): Fixed broken build on Windows
+	caused by missing TCL_THREAD_CREATE_RETURN.
+
+	* tests/stack.test (stack-3.1): Corrected nuisance error in threaded
+	builds.
+
+2004-06-22  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* generic/tclEvent.c:
+	* generic/tclInt.h:
+	* unix/tclUnixNotfy.c:
+	* unix/tclUnixThrd.c:
+	* win/tclWinThrd.c: [Bug 770053]. See bug report for more information
+	about what it does.
+
+	* tests/unixNotfy.test: rewritten to use tcltest::threadReap to
+	gracefully wait for the test thread to exit. Otherwise we got a race
+	condition with main thread exiting before the test thread. This
+	exposed the long-standing Tcl lib issue with resource
+	garbage-collection on application exit.
+
+2004-06-21  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWin32Dll.c (DllMain, _except_dllmain_detach_handler)
+	(TclpCheckStackSpace, _except_checkstackspace_handler)
+	(TclWinCPUID, _except_TclWinCPUID_detach_handler):
+	* win/tclWinChan.c (Tcl_MakeFileChannel)
+	(_except_makefilechannel_handler):
+	* win/tclWinFCmd.c (DoRenameFile, _except_dorenamefile_handler)
+	(DoCopyFile, _except_docopyfile_handler):
+	Rework pushing of exception handler function pointer so that compiling
+	with gcc -O3 works. Remove empty function call to avoid compiler
+	warning. Mark the DllMain function as noinline to avoid compiler error
+	from duplicated asm labels in generated code.
+
+2004-06-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclThreadAlloc.c (Ptr2Block): Rewrote so as to maximize the
+	chance of detecting and reporting a memory inconsistency without
+	relying on things being consistent. [Bug 975895]
+
+2004-06-18  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/load.test:	Relaxed strictness of error message matching
+	for test load-2.3 so that it will pass on Mac OSX.
+
+	* generic/tclEncoding.c: Static TclFindEncodings -> FindEncodings.
+	* generic/tclInt.h:	Updated TclpFindExecutable() so that failed
+	* generic/tclUtil.c:	attempts to find the executable are saved
+	* unix/tclUnixFile.c:	just as successful finds are. [Patch 966053]
+	* unix/tclUnixTest.c:
+
+2004-06-18  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/winFCmd.test (winFCmd-16.12): Changed test to compute the
+	target directory, so as not to fail if the user's HOME isn't the root.
+
+2004-06-19  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tcl.m4: autoconf 2.5 fixes in Darwin section.
+	* unix/configure: autoconf-2.57
+
+2004-06-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tclUnixInit.c (localeTable): Added some more locale to encoding
+	mapping info from Jim Huang <jserv@kaffe.org>
+
+	* generic/tclInt.h (PendingObjData,TclFreeObjMacro,etc):
+	* generic/tclObj.c (TclFreeObj): Added scheme for making TclFreeObj()
+	avoid blowing up the C stack when freeing up very large object trees.
+	[Bug 886231]
+
+	* win/tclWinInit.c (SetDefaultLibraryDir): Fix logic, simplify and add
+	comments.
+
+2004-06-17  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclObj.c:	Added missing space in panic message.
+
+	* win/tclWinInit.c:	Inform [tclInit] about the default library
+	directory via the ::tclDefaultLibrary variable. This should correct a
+	problem with my 2004-06-11 commit. Better solutions still in the
+	works. Thanks to Joe Mistachkin for pointing out the breakage.
+
+2004-06-16  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/library.n:	Moved variables ::auto_oldpath and
+	* library/auto.tcl:	::unknown_pending into ::tcl namespace.
+	* library/init.tcl:	[Bugs 808319, 948794]
+
+2004-06-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/binary.n: Added some notes to the documentation of the 'a'
+	format to address the point raised in [RFE 768852].
+
+2004-06-15  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/tclConfig.sh.in (TCL_EXTRA_CFLAGS): set to @CFLAGS@, which is
+	the configure-time CFLAGS. Addendum to m4 change on 2004-05-26.
+
+2004-06-14  Kevin Kenny	 <kennykb@acm.org>
+
+	* win/Makefile.in: Corrected compilation flags for tclPkgConfig.c so
+	that it doesn't require Stubs.
+	* generic/tclBasic.c (Tcl_CreateInterp): Removed comment stating that
+	TclInitEmbeddedConfigurationInformation needs Stubs; with the change
+	above, the comment is now erroneous.
+
+2004-06-11  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/Encoding.3:	Removed bogus claims about tcl_libPath.
+
+	* generic/tclInterp.c (Tcl_Init):	Stopped setting the
+	tcl_libPath variable. [tclInit] can get all its directories without it.
+
+	* tests/unixInit.test:	Modified test code that made use of
+	tcl_libPath variable.
+
+	* unix/tclUnixInit.c:	Stopped setting the tclDefaultLibrary variable,
+	execept on the Mac OS X platform with HAVE_CFBUNDLE. In that
+	configuration we should seek some way to make use of the TIP 59
+	facilities and get rid of that usage of tclDefaultLibrary as well.
+
+	* generic/tclInterp.c:	Updated [tclInit] to make $env(TCL_LIBRARY) an
+	absolute path, and to include the scriptdir,runtime configuration value
+	on the search path for init.tcl.
+
+	* unix/tclUnixInit.c:	The routines Tcl_Init() and TclSourceRCFile()
+	* win/tclWinInit.c:	had identical implementations for both win and
+	* generic/tclInterp.c:	unix. Moved to a single generic implementation.
+	* generic/tclMain.c:
+	* library/init.tcl:
+	* generic/tclInitScript.h (removed):
+	* unix/Makefile.in:
+	* win/tcl.dsp:
+
+	* unix/configure.in:	Updated TCL_PACKAGE_PATH value to handle
+	* win/configure.in:	--libdir configuration.
+
+	* unix/configure.in:	autoconf-2.57
+	* win/configure.in:
+
+	* generic/tclBasic.c (Tcl_CreateInterp): Moved call to
+	TclInitEmbeddedConfigurationInformation() earlier in
+	Tcl_CreateInterp() so that other parts of interp creation and
+	initialization may access and use the config values.
+
+2004-06-11  Kevin Kenny	 <kennykb@acm.org>
+
+	* win/tclAppInit.c: Restored the 'setargv' procedure when compiling
+	with mingw. Apparently, the command line parsing in mingw doesn't work
+	as well as that in vc++, and the result was (1) that winPipe-8.19
+	failed, and (2) that 'make test' would work at all only with
+	TESTFLAGS='-singleproc 1'. [Bug 967195]
+
+2004-06-10  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* generic/tclIOUtil.c: removed forceful setting of the private cached
+	current working directory rep from within the Tcl_FSChdir(). We
+	delegate this task to the Tcl_FSGetCwd() which does this task anyway.
+	The relevant code is still present but disabled temporarily until the
+	change proves correct. The Tcl test suite passes all test with the
+	given change so I suppose it is good enough.
+
+2004-06-10  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tclUnixInit.c (TclpInitLibraryPath):	Disabled addition of
+	* win/tclWinInit.c (TclpInitLibraryPath):	relative-to-executable
+	directories to the library search path. A first step in reform of
+	Tcl's startup process.
+
+	***POTENTIAL INCOMPATIBILITY***
+	Attempts to directly run ./tclsh or ./tcltest out of a build directory
+	will either fail, or will make use of an installed script library in
+	preference to the one in the source tree. Use `make shell` or `make
+	runtest` instead.
+
+	* tests/unixInit.test:	Modified tests to suit above changes.
+
+	* generic/tclPathObj.c:	Corrected [file tail] results when operating
+	on a path produced by TclNewFSPathObj(). [Bug 970529]
+
+2004-06-09  Zoran Vasiljevic <vasiljevic@users.sf.net>
+
+	* generic/tclIOUtil.c: partially corrected [Bug 932314]. Also
+	corrected return values of Tcl_FSChdir() to reflect those of the
+	underlying platform-specific call. Originally, return codes were mixed
+	with those of Tcl.
+
+2004-06-08  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c:
+	* generic/tclExecute.c: handle warning [Bug 969066]
+
+2004-06-08  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclHash.c (RebuildTable): Move declaration of variable so it
+	is only declared when it is used. [Bug 969068]
+
+2004-06-07  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lsearch.n: Added correct option to example. [Bug 968219]
+
+2004-06-05  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tcl.h: Corrected Tcl_WideInt declarations so that the mingw
+	build works again.
+	* generic/tclDecls.h:			Changes to the tests for clock
+	* generic/tclInt.decls:			frequency in Tcl_WinTime so
+	* generic/tclIntDecls.h:		that any clock frequency is
+	* generic/tclIntPlatDecls.h:		accepted provided that all
+	* generic/tclPlatDecls.h:		CPU's in the system share a
+	* generic/tclStubInit.c:		common chip, and hence,
+	* tests/platform.test (platform-1.3):	presumably, a common clock.
+	* win/tclWin32Dll.c (TclWinCPUID):	This change necessitated a
+	* win/tclWinTest.c (TestwincpuidCmd)	small burst of assembly code
+	* win/tclWinTime.c (Tcl_GetTime):	to read CPU ID information,
+	which was added as TclWinCPUID in the internal Stubs. To test this
+	code in the common case of a single-processor machine, a
+	'testwincpuid' command was added to tclWinTest.c, and a test case in
+	platform.test. Thanks to Jeff Godfrey and Richard Suchenwirth for
+	reporting this bug. [Bug 976722]
+
+2004-06-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tcl.h:	Restored #include <stdio.h> to tcl.h,
+	rejecting the "fix" for "Bug" 945570. Tcl_FSSeek() needs the values of
+	SEEK_SET, etc. and too many extensions rely on tcl.h providing stdio.h
+	for them.
+
+2004-06-02  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/tclWinFile.c (TclpFindExecutable): when using GetModuleFileNameA
+	(Win9x), convert from CP_ACP to WCHAR then convert back to utf8.
+	Adjunct to 2004-04-07 fix.
+
+2004-06-02  David Gravereaux <davygrvy@pobox.com>
+
+	* tests/winPipe.test (winpipe-6.1): blocking set to 1 before closing
+	to ensure we get an exitcode. The windows pipe channel driver doesn't
+	differentiate between a blocking and non-blocking close just yet, but
+	will soon. Part of [Bug 947693]
+
+2004-06-02  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/file.n: fix to documentation of 'file volumes' (Bug 962435)
+
+2004-06-01  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: check for either MSDEVDIR or MSVCDIR being in the
+	environment, for VC7. [Bug 942214]
+
+	* generic/tclIO.c (Tcl_SetChannelOption): -buffersize wasn't
+	understanding hexidecimal notation nor was reporting number conversion
+	errors. The behavior to silently ignore settings outside the
+	acceptable range of Tcl_SetChannelBufferSize (<10 or >1M) is
+	unchanged. This silent ignoring behavior might be up for review soon.
+
+2004-05-30  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c:
+	* win/tclWinPort.h:  Reworked the win implementation of Tcl_WaitPid to
+	support exitcodes in the 'signed short' range. Even though this range
+	is non-portable, it is valid on windows. Detection of exception codes
+	are now more accurate. Previously, an application that exited with
+	ExitProcess((DWORD)-1); was improperly reported as exiting with
+	SIGABRT.
+
+2004-05-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c: Added comments describing the purposes of each
+	function in the limit implementation and rewrote the names of some
+	non-public functions for greater clarity of purpose.
+	* doc/interp.n: Added note about what happens when a limited
+	interpreter creates a slave interpreter.
+	* doc/Limit.3: Added manual page for the resource limit subsystem's C
+	API. [Bug 953903]
+
+2004-05-29  Joe English	 <jenglish@users.sourceforge.net>
+
+	* doc/global.n, doc/interp.n, doc/lrange.n: Fix minor markup errors.
+
+2004-05-28  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/*.n: Added examples to many (too many to list) more man pages.
+
+2004-05-25  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c:
+	* generic/tclVar.c: using (ptrdiff_t) instead of (int) casting to
+	correct compiler warnings [Bug 961657], reported by Bob Techentin.
+
+2004-05-27  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tests/clock.test: Added a single test for the presence of %G in
+	[clock format], and conditioned out the clock-10.x series if they're
+	all going to fail because of a broken strftime() call. [Bug 961714]
+
+2004-05-27  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclHash.c (CompareStringKeys): Added #ifdef to allow people
+	to instruct this function to use strcmp(). [FRQ 951168]
+
+	* generic/tclVar.c: Moved declarations into #if guards so they only
+	happen when required.
+	* unix/tclUnixPort.h: Guard declaration of strtod() so it is only
+	enabled when we don't have a declaration in stdlib.h
+	* unix/tclUnixThrd.c (Tcl_CreateThread):	Added declarations
+	* unix/tclUnixTest.c (AlarmHandler):		and casts so that
+	* unix/tclUnixChan.c (TtyModemStatusStr):	all functions are
+	* generic/tclScan.c (Tcl_ScanObjCmd):		defined before use
+	* generic/tclDictObj.c (InvalidateDictChain):	and no cross-type
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):	uses are performed.
+
+	The overall effect is to make building with gcc with the additional
+	flags -Wstrict-prototypes -Wmissing-prototypes produce no increase in
+	the total number of warnings (except for main(), which is undeclared
+	for traditional reasons.)
+
+2004-05-26  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/Makefile.in:  Rework configure ordering to TCL_LINK_LIBS,
+	* unix/tcl.m4:	     ENABLE_SHARED, CONFIG_CFLAGS, & ENABLE_SYMBOLS
+	* unix/configure:    before TCL_EARLY_FLAGS and TCL_64BIT_FLAGS
+	* unix/configure.in: (about 400 lines earlier) in configure.in. This
+	forces CFLAGS configuration to be done before many tests, which is
+	needed for 64-bit builds and may affect other builds. Also make
+	CONFIG_CFLAGS append to CFLAGS directly instead of using EXTRA_CFLAGS,
+	and have LDFLAGS append to any existing value. [Bug 874058]
+	* unix/dltest/Makefile.in: change EXTRA_CFLAGS to DEFS
+
+2004-05-26  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	Correction to debug prints and testing
+	* library/tcltest/pkgIndex.tcl:	if TCLTEST_OPTIONS value. Corrected
+	* tests/tcltest.test:		double increment of numTestFiles in
+	-singleproc 1 configurations. Updated tcltest-19.1 to tcltest 2.1
+	behavior. Corrected tcltest-25.3 to not falsely report a failure in
+	tcltest.test. Bumped to tcltest 2.2.6. [Bugs 960560, 960926]
+
+2004-05-25  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* doc/http.n (http::config): add -urlencoding option (default utf-8)
+	* library/http/http.tcl:     that specifies encoding conversion of
+	* library/http/pkgIndex.tcl: args for http::formatQuery. Previously
+	* tests/http.test:	     undefined, RFC 2718 says it should be
+	utf-8. 'http::config -urlencoding {}' returns previous behavior, which
+	will throw errors processing non-latin-1 chars. Bumped http package to
+	2.5.0.
+
+2004-05-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c (DeleteScriptLimitCallback): Move all deletion
+	of script callback hash table entries to happen here so the entries
+	are correctly removed at the right time. [Bug 960410]
+
+2004-05-25  Miguel Sofer <msofer@users.sf.net>
+
+	* docs/global.n: added details for qualified variable names [Bug
+	959831]
+
+2004-05-25  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclNamesp.c (Tcl_FindNamespaceVar):
+	* tests/namespace.test (namespace-17.10-12): reverted commit of
+	2004-05-23 and removed the tests, as it interferes with the varname
+	resolver and there are apps that break (AlphaTk). A fix will have to
+	wait for Tcl9.
+
+	* generic/tclVar.c: Caching of namespace variables disabled: no simple
+	way was found to avoid interfering with the resolver's idea of
+	variable existence. A cached varName may keep a variable's name in the
+	namespace's hash table, which is the resolver's criterion for
+	existence.
+
+	* tests/namespace.c (namespace-17.10): testing for interference
+	between varname caching and name resolver.
+
+2004-05-25  Kevin Kenny	 <kennykb@acm.org>
+
+	* tests/winFCmd.test: Correct test for the presence of a CD-ROM so
+	that it doesn't misdetect some other sort of filesystem with a
+	write-protected root as being a CD-ROM drive. [Bug 918267]
+
+2004-05-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/winPipe.test:	Protect against path being set
+	* tests/unixInit.test:	Unset path when done.
+	* tests/unload.test (unload-3.1): Verify [pkgb_sub] does not exist.
+	Delete interps when done.
+	* tests/stringComp.test:	stop re-use of string.test test names
+	* tests/regexpComp.test:	stop re-use of regexp.test test names
+	* tests/namespace.test (namespace-46.3): Verify [p] does not exist.
+	* tests/http.test:	Clear away the custom [bgerror] when done.
+	* tests/io.test:	Take care to use namespace variables.
+	* tests/autoMkindex.test (autoMkindex-5.2): Use variable "result"
+	that gets cleaned up.
+	* tests/exec.test:	Clean up the "path" array.
+	* tests/interp.test (interp-9.3): Initialize res, so prior values
+	cannot make the test fail.
+	* tests/execute.test (execute-8.1):  Updated to remove the trace set
+	on ::errorInfo. When left in place, that trace can cause later tests
+	to fail.
+
+2004-05-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclBasic.c: Removed references to Tcl_RenameCommand from
+	* generic/tcl.h:      comments. [Bug 848440, second part]
+
+	* tests/fCmd.test: Rewrote tests that failed consistently on NFS so
+	they either succeed (through slightly more liberal matching of the
+	results) or are constrained to not run. [Bug 931312]
+
+	* doc/bgerror.n: Use idiomatic open flags for working with log
+	files. [Bug 959602]
+
+2004-05-24  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclExecute.c (VerifyExprObjType): use GET_WIDE_OR_INT to
+	properly have tclIntType used for smaller values. This corrects [TclX
+	Bug 896727] and any other 3rd party extension that created math
+	functions but was not yet WIDE_INT aware in them.
+
+2004-05-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c (TclInitLimitSupport): Made limits work on
+	platforms where sizeof(void*)!=sizeof(int). [Bug 959193]
+
+2004-05-24 Miguel Sofer <msofer@users.sf.net>
+
+	* doc/set.n: accurate description of name resolution process,
+	referring to namespace.n for details [Bug 959180]
+
+2004-05-23  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclNamesp.c (Tcl_FindNamespaceVar): [Bug 959052] fixed,
+	insuring that no "zombie" variables are found.
+	* generic/tclVar.c (TclLookupSimpleVar): comments re [Bug 736729]
+	(predecessor of [Bug 959052]) removed.
+	* tests/namespace.test: added tests 17.10-12
+
+	The patch modifies non-documented behaviour, and passes every test in
+	the testsuite. However, scripts relying on the old behaviour may
+	break.
+	Note that the only behaviour change concerns the creative writing of
+	unset variables. More precisely, which variable will be created when
+	neither a namespace variable nor a global variable by that name
+	exists, as defined by [info vars]. The new behaviour is that the
+	namespace resolution process deems a variable to exist exactly when
+	[info vars] finds it - ie, either it has value, or else it was "fixed"
+	by a call to [variable].
+	Note: this patch was removed on 2002-05-25.
+
+2004-05-22  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c (TclObjLookupVar, TclObjUnsetVar2): fix for new (in
+	tcl8.4) exteriorisations of [Bug 736729] due to the use of
+	tclNsVarNameType obj types. Reenabling the use of this objType ("VAR
+	ref absolute" benchmark down to 66 ms, from 230). Added comments in
+	TclLookupSimpleVar explaining my current understanding of [Bug
+	736729].
+
+2004-05-22  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclVar.c: fix for [Bug 735335]. The use of tclNsVarNameType
+	objs is still disabled, pending resolution of [Bug 736729].
+
+2004-05-21  Miguel Sofer <msofer@users.sf.net>
+
+	* tests/namespace.test (namespace-41.3): removed the {knownBug}
+	constraint: [Bug 231259] is closed since nov 2001, and the fix of [Bug
+	729692] (INST_START_CMD) makes the test succeed.
+
+2004-05-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclExecute.c (TclExecuteByteCode): Move a few declarations a
+	short distance so pre-C99 compilers can cope. Also fix so
+	TCL_COMPILE_DEBUG path compiles...
+
+2004-05-21  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): reorganised TEBC
+	automatic variables, defining them in tight blocks instead of at the
+	function level. This has three purposes:
+	- it simplifies the analysis of individual instructions
+	- it is preliminary work to the non-recursive engine
+	- it allows a better register allocation by the optimiser; under
+	gcc3.3, this results in up to 10% runtime in some tests
+
+2004-05-20  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c (TclLimitRemoveAllHandlers):
+	* generic/tclBasic.c (DeleteInterpProc):
+	* tests/interp.test (interp-34.7): Ensure that all limit callbacks are
+	deleted when their interpreters are deleted. [Bug 956083]
+
+2004-05-19  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/tclWinFile.c (TclpMatchInDirectory): fix for an issue where
+	there was a sneak path from Tcl_DStringFree to SetErrorCode(0). The
+	result was that the error code could be reset between a call to
+	FindFirstFileEx and the check of its status return, leading to a
+	bizarre error return of {POSIX unknown {No error}}. (Found in
+	unplanned test - no incident logged at SourceForge.)
+
+2004-05-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/interp.test (interp-34.3): Rewrite this test to see if a time
+	limit can catch a tight bytecode loop, a maximally aggressive
+	denial-of-service attack.
+	* generic/tclInterp.c (Tcl_LimitCheck): Fix the sense of checks to see
+	whether a time limit has been extended.
+
+	* tests/*.test: Many minor fixes, including ensuring that every test
+	is run (so constraints control whether the test is doing anything) and
+	making sure that constraints are always set using the API instead of
+	poking around inside tcltest's internal datastructures. Also got rid
+	of all trailing whitespace lines from the test suite!
+
+2004-05-19  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c: Fixed [SF Tcl Bug 943274]. This is the same problem
+	* generic/tclIO.h: as [SF Tcl Bug 462317], see ChangeLog entry
+	2001-09-26. The fix done at that time is incomplete. It is possible to
+	get around it if the actual read operation is defered and not executed
+	in the event handler itself. Instead of tracking if we are in an read
+	caused by a synthesized fileevent we now track if the OS has delivered
+	a true event = actual data and bypass the driver if a read finds that
+	there is no actual data waiting. The flag is cleared by a short or
+	full read.
+
+	***POTENTIAL INCOMPATIBILITY*** for channel drivers.
+
+2004-05-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: fix to (Bug 956063) in 'file dirname'.
+	* tests/cmdAH.test: added test for this bug.
+
+	* doc/FileSystem.3: better documentation of refCount requirements of
+	some FS functions (Bug 956126)
+
+2004-05-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclTest.c (TestgetintCmd): Made the tests in get.test check
+	* tests/get.test:		     Tcl_GetInt() since the core now
+					     avoids that function.
+
+2004-05-18  Kevin B. Kenny  <kennykb@acm.org>
+
+	* compat/strftime.c (_fmt, ISO8601Week):
+	* doc/clock.n:
+	* tests/clock.test: Major rework to the handling of ISO8601 week
+	numbers. Now passes all the %G and %V test cases on Windows, Linux and
+	Solaris [Bugs 500285, 500389, and 852944]
+
+2004-05-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/append.n, doc/upvar.n: Added example.
+
+2004-05-18  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: now generates a tclConfig.sh from Pat Thoyts [Patch
+	909911]
+
+2004-05-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lsearch.n: Improve clarity (based on [Patch 955361] by Peter
+	Spjuth)
+
+	* tools/man2help2.tcl (macro,SHmacro): Added support for subsection
+	(.SS) header macros.
+
+	* doc/interp.n: Added user documentation for the TIP#143 resource
+	limits and some examples.
+
+	* generic/tclInterp.c (Tcl_LimitCheck, Tcl_LimitTypeReset): Reset the
+	limit-exceeded flag when removing a limit.
+
+2004-05-18  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): added comments to
+	classify the variables according to their use in TEBC.
+
+2004-05-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/global.n, doc/uplevel.n: Added an example.
+
+	* tests/info.test (info-3.1): Corrected test result back to what it
+	used to be in Tcl 7.* now that command counts are being correctly kept
+
+	* generic/tclExecute.c (TEBC:INST_START_CMD): Make sure that the
+	command-count is always advanced. Allows TIP#143 limits to tell that
+	work is being done.
+
+	* doc/list.n: Updated example to fit with the unified format.
+	* doc/seek.n: Added some examples.
+
+2004-05-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* win/tclWinFile.c:
+	* tests/cmdAH.test: fix to (Bug 954263) where 'file executable' was
+	case-sensitive.
+
+2004-05-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/OpenFileChnl.3: Documented type of 'offset' argument to Tcl_Seek
+	was wrong. [Bug 953374]
+
+2004-05-16  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): remove one level of
+	indirection for compiledLocals addressing.
+
+2004-05-16  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_CALL_FUNC1): bugfix; restored
+	(DE)CACHE_STACK_INFO pair around the call - the user defined math
+	function could cause a recursive call to TEBC.
+
+2004-05-16  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_DeleteInterp):
+	* generic/tclExecute.c (INST_START_CMD): interp deletion now modifies
+	the compileEpoch, eliminating the need for the check for interp
+	deletion in INST_START_CMD.
+
+2004-05-16  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.h:
+	* generic/tclCompile.c:
+	* generic/tclExecute.c: changed implementation of {expand}, last
+	chance while in alpha as ...
+
+	***POTENTIAL INCOMPATIBILITY***
+	Scripts precompiled with ProComp under previous tcl8.5a versions may
+	malfunction due to changed instruction numbers for
+	INST_LIST_INDEX_IMM, INST_LIST_RANGE_IMM and INST_START_CMD.
+
+2004-05-14  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclInt.decls:	     Promoted TclpLocaltime and TclpGmtime
+	* generic/tclIntDecls.h:     from Unix-specific stubs to the generic
+	* generic/tclIntPlatDecls.h: internal Stubs table. Reran 'genstubs'
+	* generic/tclStubInit.c:
+	* unix/tclUnixPort.h:
+
+	* generic/tclClock.c: Changed a buggy 'GMT' timezone specification
+			      to the correct 'GMT0'. [Bug 922848]
+
+	* unix/tclUnixThrd.c: Moved TclpGmtime and TclpLocaltime to
+			      unix/tclUnixTime.c where they belong.
+
+	* unix/tclUnixTime.c (TclpGmtime, TclpLocaltime, TclpGetTimeZone,
+			      ThreadSafeGMTime [removed],
+			      ThreadSafeLocalTime [removed],
+			      SetTZIfNecessary, CleanupMemory):
+	Restructured to make sure that the same mutex protects all calls to
+	localtime, gmtime, and tzset. Added a check in front of those calls to
+	make sure that the TZ env var hasn't changed since the last call to
+	tzset, and repeat tzset if necessary. [Bug 942078] Removed a buggy
+	test of the Daylight Saving Time information in 'gettimeofday' in
+	favor of applying 'localtime' to a known value. [Bug 922848]
+
+	* tests/clock.test (clock-3.14): Added test to make sure that changes
+	to $env(TZ) take effect immediately.
+
+	* win/tclWinTime.c (TclpLocaltime, TclpGmtime): Added porting layer
+	for 'localtime' and 'gmtime' calls.
+
+2004-05-14  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c:
+	* generic/tclCompile.h: the math functions receive a pointer to top of
+	the stack (tosPtr) instead of the execution environment (eePtr). First
+	step towards a change in the execution stack management - it is now
+	only used within TEBC.
+
+2004-05-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	TIP#143 IMPLEMENTATION
+
+	* generic/tclExecute.c (TclCompEvalObj, TclExecuteByteCode):
+	* generic/tclBasic.c (TclEvalObjvInternal): Enable limit checking.
+	* generic/tclInterp.c (Tcl_Limit*): Public limit API.
+	* generic/tcl.decls:
+	* tests/interp.test: Basic tests of command limits.
+
+	* doc/binary.n:		TIP#129 IMPLEMENTATION [Patch 858211]
+	* generic/tclBinary.c:	Note that the test suite probably has many more
+	* tests/binary.test:	failures now due to alterations in constraints.
+
+2004-05-12  Miguel Sofer <msofer@users.sf.net>
+
+	Optimisations for INST_START_CMD [Bug 926164].
+	* generic/tclCompile.c (TclCompileScript): avoid emitting
+	INST_START_CMD as the first instruction in a bytecoded Tcl_Obj. It is
+	not needed, as the checks are done before calling TEBC.
+	* generic/tclExecute.c (TclExecuteByteCode): runtime peephole
+	optimisation: check at INST_POP if the next instruction is
+	INST_START_CMD, in which case we fall through.
+
+2004-05-11  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/split.n, doc/join.n: Updated examples and added more.
+
+2004-05-11  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/glob.n: documented behaviour of symbolic links with 'glob -types
+	d' (Bug 951489)
+
+2004-05-11  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/scan.n: Updated the examples to be clearer about their relevance
+	to the scan command.
+
+2004-05-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/scan.n: Added examples.
+
+2004-05-10  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c (BuildCommandLine): Moved non-obvious appending
+	logic to outside the loop and added commentary for its purpose. Also
+	use the existence of contents in the linePtr rather than the scratch
+	DString post the append, as this more clear.
+
+	(TclpCreateProcess): When under NT, with no console, and executing a
+	DOS application, the path priming does not need an ending space as
+	BuildCommandLine() will do this for us.
+
+2004-05-08  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:
+	* generic/tclIOUtil.c: remove some compiler warnings on MacOS X.
+
+2004-05-07  Chengye Mao <chengye.geo@yahoo.com>
+
+	* win/tclWinPipe.c: refixed bug 789040 re-entered in rev 1.41. Let's
+	be careful and don't re-enter previously fixed bugs.
+
+2004-05-08  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/format.n: Added examples.
+
+2004-05-07  Miguel Sofer <msofer@users.sf.net>
+
+	* doc/unset.n: added upvar.n to the "see also" list
+
+2004-05-07  Reinhard Max  <max@suse.de>
+
+	* generic/tclEncoding.c:
+	* tests/encoding.test: added support and tests for translating
+	embedded null characters between real nullbytes and the internal
+	representation on input/output [Bug 949905].
+
+2004-05-07  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:
+	* generic/tclIOUtil.c:
+	* generic/tclFileSystem.h:
+	* tests/fileSystem.test: fix for [Bug 943995], in which vfs-registered
+	root volumes were not handled correctly as glob patterns in all
+	circumstances.
+
+2004-05-06  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclInt.h:
+	* generic/tclObj.c (TclFreeObj): made TclFreeObj use the new macro
+	TclFreeObjMacro(), so that the allocation and freeing of Tcl_Obj is
+	defined in a single spot (the macros in tclInt.h), with the exception
+	of the TCL_MEM_DEBUG case.
+	The #ifdef logic for the corresponding macros has been reformulated to
+	make it clearer.
+
+2004-05-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/break.n, doc/continue.n, doc/for.n, doc/while.n: More examples.
+
+2004-05-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/unixInit.test (unixInit-2.10):	Test correction for Mac OSX.
+	Be sure to consistently compare normalized path names. Thanks to
+	Steven Abner (tauvan). [Bug 948177]
+
+2004-05-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/CrtObjCmd.3: Remove reference to Tcl_RenameCommand; there is no
+	such API. [Bug 848440]
+
+2004-05-05  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinSock.c (SocketEventProc) : connect errors should fire both
+	the readable and writable handlers because this is how it works on
+	UNIX [Bug 794839]
+
+	* generic/tclEncoding.c (TclFinalizeEncodingSubsystem):
+	FreeEncoding(systemEncoding); moved to before the hash table iteration
+	as it was causing a double free attempt under some conditions.
+
+	* win/coffbase.txt: Added the tls extension to the list of preferred
+	load addresses.
+
+2004-05-04  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* tests/fileSystem.test (filesystem-1.39): replace 'file volumes'
+	* tests/fileName.test (filename-12.9,10):  lindex with direct C:/
+	hard-coded because A:/ was being used and that is empty for most.
+
+	* tests/winFCmd.test (winFCmd-16.12): test volumerelative $HOME
+
+2004-05-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclAlloc.c:		Make sure Tclp*Alloc* routines get
+	* generic/tclInt.h:		declared in the TCL_MEM_DEBUG and
+	* generic/tclThreadAlloc.c:	TCL_THREADS configuration. [Bug 947564]
+
+	* tests/tcltest.test:	Test corrections for Mac OSX. Thanks to Steven
+	Abner (tauvan). [Bug 947440]
+
+2004-05-04  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclEvent.c (TclSetLibraryPath): Suppress a warning.
+
+2004-05-03  Andreas Kupries  <andreask@activestate.com>
+
+	* Applied [Patch 868853], fixing a mem leak in TtySetOptionProc.
+	Report and Patch provided by Stuart Cassoff <stwo@users.sf.net>.
+
+2004-05-03  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclProc.c (TclCreateProc): comments corrected.
+
+2004-05-03  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclCompileScript): setting the compilation
+	namespace outside of the loop.
+
+2004-05-03  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c:
+	* generic/tclInt.h: reverted fix for [Bug 926445] of 2004-04-02,
+	restoring TCL_ALIGN to the header file. Todd Helfter reported that the
+	macro is required by tbcload.
+
+2004-05-03  Kevin Kenny	 <kennykb@acm.org>
+
+	* win/tclWin32Dll.c (TclpCheckStackSpace):
+	* tests/stack.test (stack-3.1): Fix for undetected stack overflow in
+	TclReExec on Windows. [Bug 947070]
+
+2004-05-03  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/init.tcl:	Corrected unique prefix matching of
+	interactive command completion in [unknown]. [Bug 946952]
+
+2004-05-02  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclProc.c (TclObjInvokeProc):
+	* tests/proc.test (proc-3.6): fix for bad quoting of multi-word proc
+	names in error messages [Bug 942757]
+
+2004-04-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/glob.n, doc/incr.n, doc/set.n:	More examples.
+	* doc/if.n, doc/rename.n, doc/time.n:
+
+2004-04-30  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:		Replaced Kevin Kenny's temporary
+	* generic/tclThreadAlloc.c:	fix for Bug 945447 with a cleaner,
+	more permanent replacement.
+
+2004-04-30  Kevin B. Kenny   <kennykb@acm.org>
+
+	* generic/tclThreadAlloc.c: Added a temporary (or so I hope!)
+	inclusion of "tclWinInt.h" to avoid problems when compiling on
+	Win32-VC++ with --enable-threads. [Bug 945447]
+
+2004-04-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/puts.n: Added a few examples.
+
+2004-04-29  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/execute.test (execute-8.2):	Avoid crashes when there is
+	limited system stack space (threads-enabled).
+
+2004-04-28  Miguel Sofer <msofer@users.sf.net>
+
+	* doc/global.n:
+	* doc/upvar.n:
+	* generic/tclVar.c (ObjMakeUpvar):
+	* tests/upvar.test (upvar-8.11):
+	* tests/var.test (var-3.11): Avoid creation of unusable variables:
+	[Bug 600812] [TIP 184].
+
+2004-04-28  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lsearch.n: Fixed fault in documentation of -index option [943448]
+
+2004-04-26  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tclUnixFCmd.c (TclpObjNormalizePath):  Corrected improper
+	positioning of returned checkpoint. [Bug 941108]
+
+2004-04-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/open.n, doc/close.n: Updated (thanks to David Welton) to be
+	clearer about pipeline errors and added example to open(n) that shows
+	simple pipeline use. [Patches 941377,941380]
+
+	* doc/DictObj.3: Added warning about the use of Tcl_DictObjDone and an
+	example of use of iteration. [Bug 940843]
+
+	* doc/Thread.3: Reworked to remove references to testing interfaces
+	and instead promote the use of the Thread package. [Patch 932527]
+	Also reworked and reordered the page for better readability.
+
+2004-04-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tcl.h:	Removed obsolete declarations and #include's.
+	* generic/tclInt.h:	[Bugs 926459, 926486]
+
+2004-04-24  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWin32Dll.c (DllMain): Added DisableThreadLibraryCalls() for
+	the DLL_PROCESS_ATTACH case. We're not interested in knowing about
+	DLL_THREAD_ATTACH, so disable the notices.
+
+2004-04-24  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclPort.h:
+	* macosx/Makefile:
+	* unix/Makefile.in: followup on tcl header reform [FR 922727]: removed
+	use of relative #include paths in tclPort.h to allow installation of
+	private headers outside of tcl source tree; added 'unix' dir to
+	compiler header search path; add newly required tcl private headers to
+	Tcl.framework on Mac OSX.
+
+2004-04-23  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c (Tcl_SetChannelOption): Fixed [SF Tcl Bug 930851].
+	When changing the eofchar we have to zap the related flags to prevent
+	them from prematurely aborting the next read.
+
+2004-04-25  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: fix to [Bug 940281]. Tcl_FSJoinPath will now
+	always return a valid Tcl_Obj when the input is valid.
+	* generic/tclIOUtil.c: fix to [Bug 931823] for a more consistent
+	Tcl_FSPathSeparator() implementation which allows filesystems not to
+	implement their Tcl_FSFilesystemSeparatorProc if they wish to use the
+	default '/'. Also fixed associated memory leak seen with, e.g., tclvfs
+	package.
+	* doc/FileSystem.3: documented Tcl_FSJoinPath return values more
+	clearly, and Tcl_FSFilesystemSeparatorProc requirements.
+
+2004-04-23  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWin32Dll.c: Removed my mistake from 4/19 of adding an exit
+	handler to TclWinInit. TclWinEncodingsCleanup called from
+	TclFinalizeFilesystem does the Tcl_FreeEncoding for us.
+
+	* win/tclWinChan.c (Tcl_MakeFileChannel): Case for CloseHandle
+	returning zero and not throwing a
+	RaiseException(EXCEPTION_INVALID_HANDLE) now being done.
+
+2004-04-22  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclEvent.c: TclSetLibraryPath's use of caching the stringrep
+	of the pathPtr object to TclGetLibraryPath called from another thread
+	was ineffective if the original's stringrep had been invalidated as
+	what happens when it gets muted to a list.
+
+	* win/tclWinTime.c: If the Tcl_ExitProc (StopCalibration) is called
+	from the stack frame of DllMain's PROCESS_DETACH, the wait operation
+	should timeout and continue.
+
+	* generic/tclInt.h:
+	* generic/tclThread.c:
+	* generic/tclEvent.c:
+	* unix/tclUnixThrd.c:
+	* win/tclWinThrd.c: Provisions made so masterLock, initLock, allocLock
+	and joinLock mutexes can be recovered during Tcl_Finalize.
+
+2004-04-22  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/switch.n: Reworked the examples to be more systematically named
+	and to cover some TIP#75 capabilities.
+
+	* doc/cd.n: Documentation clarification from David Welton.
+
+	* doc/exec.n: Added some examples, Windows ones from Arjen Markus and
+	Unix ones by myself.
+
+2004-04-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/Hash.3: Added note to Tcl_{First,Next}HashEntry docs that
+	deleting the element they return is supported (and is in fact the only
+	safe update you can do to the structure of a hashtable while an
+	iteration is going over it.)
+
+	* doc/bgerror.n: Added example from David Welton. [Patch 939473]
+
+	* doc/after.n: Added examples from David Welton. [Patch 938820]
+
+2004-04-19  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWin32Dll.c: Added an exit handler in TclWinInit() so
+	tclWinTCharEncoding could be freed during Tcl_Finalize().
+
+	* generic/tclEncoding.c: Added FreeEncoding(systemEncoding) in
+	TclFinalizeEncodingSubsystem because its ref count was incremented in
+	TclInitEncodingSubsystem.
+
+2004-04-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/read.n: Added example from David Welton. [Patch 938056]
+
+2004-04-19  Kevin B. Kenny   <kennykb@acm.org>
+
+	* generic/tclObj.c (Tcl_GetDoubleFromObj) Corrected "short circuit"
+	conversion of int to double. Reported by Jeff Hobbs on the Tcl'ers
+	Chat.
+
+2004-04-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lreplace.n, doc/lrange.n, doc/llength.n:	More examples for
+	* doc/linsert.n, doc/lappend.n:			the documentation.
+
+2004-04-16  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3: Corrected documentation of Tcl_FSUtime, and the
+	corresponding filesystem driver Tcl_FSUtimeProc. [Bug 935838]
+
+2004-04-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/socket.n: Added example from [Patch 936245].
+	* doc/gets.n: Added example based on [Patch 935911].
+
+2004-04-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclClock.c (Tcl_ClockObjCmd): Minor fault in a [clock
+	clicks] error message.
+
+2004-04-07  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/tclWinInit.c (TclpSetInitialEncodings): note that WIN32_CE is
+	also a unicode platform.
+	* generic/tclEncoding.c (TclFindEncodings, Tcl_FindExecutable):
+	* generic/tclInt.h:			    Correct handling of UTF
+	* unix/tclUnixInit.c (TclpInitLibraryPath): data that is actually
+	* win/tclWinFile.c (TclpFindExecutable):    "clean", allowing the
+	* win/tclWinInit.c (TclpInitLibraryPath):   loading of Tcl from paths
+	that contain multi-byte chars on Windows [Bug 920667]
+
+	* win/configure:    define TCL_LIB_FLAG, TCL_BUILD_LIB_SPEC,
+	* win/configure.in: TCL_LIB_SPEC, TCL_PACKAGE_PATH in tclConfig.sh.
+
+2004-04-06  Don Porter	<dgp@users.sourceforge.net>
+
+	Patch 922727 committed.	 Implements three changes:
+
+	* generic/tclInt.h:	Reworked the Tcl header files into a clean
+	* unix/tclUnixPort.h:	hierarchy where tcl.h < tclPort.h < tclInt.h
+	* win/tclWinInt.h:	and every C source file should #include
+	* win/tclWinPort.h:	at most one of those files to satisfy its
+	declaration needs. tclWinInt.h and tclWinPort.h also better organized
+	so that tclWinPort.h includes the Windows implementation of
+	cross-platform declarations, while tclWinInt.h makes declarations that
+	are available on Windows only.
+
+	* generic/tclBinary.c (TCL_NO_MATH):	Deleted the generic/tclMath.h
+	* generic/tclMath.h (removed):		header file. The internal Tcl
+	* macosx/Makefile (PRIVATE_HEADERS):	header, tclInt.h, has a
+	* win/tcl.dsp:				#include <math.h> directly,
+	and file external to Tcl needing libm should do the same.
+
+	* win/Makefile.in (WIN_OBJS):	Deleted the win/tclWinMtherr.c file.
+	* win/makefile.bc (TCLOBJS):	It's a vestige from matherr() days
+	* win/makefile.vc (TCLOBJS):	gone by.
+	* win/tcl.dsp:
+	* win/tclWinMtherr.c (removed):
+
+	End Patch 922727.
+
+	* tests/unixInit.test (unixInit-3.1):	Default encoding on Darwin
+	systems is utf-8. Thanks to Steven Abner (tauvan). [Bug 928808]
+
+2004-04-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/cmdAH.test (cmdAH-18.2): Added constraint because
+	access(...,X_OK) is defined to be permitted to be meaningless when
+	running as root, and OSX exhibits this. [Bug 929892]
+
+2004-04-02  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c:
+	* generic/tclInt.h: removed the macro TCL_ALIGN() from tclInt.h,
+	replaced by the static macro ALIGN() in tclCompile.c [Bug 926445]
+
+2004-04-02  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.h: removed redundant #ifdef _TCLINT [Bug 928415],
+	reported by tauvan.
+
+2004-04-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/tcltest.test: Corrected constraint typos: "nonRoot" ->
+	"notRoot". Thanks to Steven Abner (tauvan). [Bug 928353]
+
+2004-04-01  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:  Removed obsolete tclBlockTime* declarations. [Bug
+	926454]
+
+2004-04-01  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: Fix to privately reported vfs bug with 'glob
+	-type d -dir . *' across a vfs boundary. No tests for this are
+	currently possible without effectively moving tclvfs into Tcl's test
+	suite.
+
+2004-03-31  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/msgcat.n:	Clarified message catalog file encodings. [Bug 811457]
+	* library/msgcat/msgcat.tcl: Updated internals to make use of [dict]s
+	to store message catalog data and to use [source -encoding utf-8] to
+	access catalog files. Thanks to Michael Sclenker. [Patch 875055, RFE
+	811459] Corrected [mcset] to be able to successfully set a translation
+	to the empty string. [mcset $loc $src {}] was incorrectly set the $loc
+	translation of $src back to $src. Also changed [ConvertLocale] to
+	minimally require a non-empty "language" part in the locale value. If
+	not, an error raised prompts [Init] to keep looking for a valid locale
+	value, or ultimately fall back on the "C" locale. [Bug 811461].
+	* library/msgcat/pkgIndex.tcl:	Bump to msgcat 1.4.1.
+
+2004-03-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclHash.c (HashStringKey): Cleaned up. This function is not
+	faster, but it is a little bit clearer.
+	* generic/tclLiteral.c (HashString): Applied logic from HashObjKey.
+	* generic/tclObj.c (HashObjKey): Rewrote to fix fault which hashed
+	every single-character object to the same hash bucket. The new code is
+	shorter, simpler, clearer, and (happily) faster.
+
+2004-03-30  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclExecute.c (TEBC): reverting to the previous method for
+	async tests in TEBC, as the new method turned out to be too costly.
+	Async tests now run every 64 instructions.
+
+2004-03-30  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c:	    New instruction code INST_START_CMD that
+	* generic/tclCompile.h:	    allows checking the bytecode's validity
+	* generic/tclExecute.c:	    [Bug 729692] and the interp's readyness
+	* tests/interp.test (18.9): [Bug 495830] before running the command.
+	* tests/proc.test (7.1):    It also changes the mechanics of the async
+	* tests/rename.test (6.1):  tests in TEBC, doing it now at command
+	start instead of every 16 instructions.
+
+2004-03-30  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:  Fix to Windows glob where the pattern is a
+	* generic/tclIOUtil.c:	  volume relative path or a network share [Bug
+	* tests/fileName.test:	  898238]. On windows 'glob' will now return
+	* tests/fileSystem.test:  the results of 'glob /foo/bar' and 'glob
+	\\foo\\bar' as 'C:/foo/bar', i.e. a correct absolute path (rather than
+	a volume relative path).
+
+	Note that the test suite does not test commands like
+	'glob //Machine/Shared/*' (on a network share).
+
+2004-03-30  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c:	  Fix to filename bugs recently
+	* tests/fileName.test:	  introduced [Bug 918320].
+
+2004-03-29  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclMain.c (Tcl_Main, StdinProc):	Append newline only
+	* tests/basic.test (basic-46.1):		to incomplete scripts
+	as part of multi-line script construction. Do not add an extra
+	trailing newline to the complete script. [Bug 833150]
+
+2004-03-28  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompile.c (TclCompileScript): corrected possible segfault
+	when a compilation returns TCL_OUTLINE_COMPILE after having grown the
+	compile environment [Bug 925121].
+
+2004-03-27  Miguel Sofer <msofer@users.sf.net>
+
+	* doc/array.n: added documentation for trace-realted behaviour of
+	'array get' [Bug 449893]
+
+2004-03-26  Don Porter	<dgp@users.sourceforge.net>
+
+	* README:		Bumped version number to 8.5a2 to distinguish
+	* tools/tcl.wse.in:	HEAD of CVS development from the recent 8.5a1
+	* unix/configure.in:	release.
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/configure.in:
+
+	* unix/configure:	autoconf-2.57
+	* win/configure:
+
+2004-03-26  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c:	  Fix to Windows-only volume relative path
+	* tests/fileSystem.test:  normalization. [Bug 923568]. Also fixed
+	another volume relative bug found while testing.
+
+2004-03-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (NsEnsembleImplementationCmd): Fix messed up
+	handling of strncmp result which just happened to work in some libc
+	implementations. [Bug 922752]
+
+2004-03-23  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/StringObj.3: Inverted the sense of the documentation of how the
+	bytes parameter is documented to match behaviour. [Bug 921464]
+
+2004-03-19  Kevin B. Kenny   <kennykb@acm.org>
+
+	* compat/strtoll.c:
+	* compat/strtoull.c:
+	* generic/tclIntDecls.h:
+	* generic/tclMain.c:
+	* generic/tclObj.c:
+	* win/tclWinDde.c:
+	* win/tclWinReg.c:
+	* win/tclWinTime.c:	   Made HEAD build on Windows VC++ again.
+
+2004-03-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclIntDecls.h: Made HEAD build on Solaris again by applying
+	fix recommended by Don Porter.
+
+2004-03-18  Reinhard Max  <max@suse.de>
+
+	* generic/tclIntDecls.h: Removed TclpTime_t. It wasn't really needed,
+	* generic/tclInt.h:	 but caused warnings related to
+	* generic/tclInt.decls:	 strict aliasing with GCC 3.3.
+	* generic/tclClock.c:
+	* generic/tclDate.c:
+	* generic/tclGetDate.y:
+	* win/tclWinTime.c:
+	* unix/tclUnixTime.c:
+
+	* generic/tclNamesp.c:	 Added temporary pointer variables to work
+	* generic/tclStubLib.c:	 around warnings related to
+	* unix/tclUnixChan.c:	 strict aliasing with GCC 3.3.
+
+	* unix/tcl.m4:		 Removed -Wno-strict-aliasing.
+
+2004-03-18  Daniel Steffen  <das@users.sourceforge.net>
+
+	Removed support for Mac OS Classic platform [Patch 918142]
+
+	* README:
+	* compat/string.h:
+	* doc/Encoding.3:
+	* doc/FileSystem.3:
+	* doc/Init.3:
+	* doc/Macintosh.3 (removed):
+	* doc/OpenFileChnl.3:
+	* doc/OpenTcp.3:
+	* doc/SourceRCFile.3:
+	* doc/Thread.3:
+	* doc/clock.n:
+	* doc/exec.n:
+	* doc/fconfigure.n:
+	* doc/file.n:
+	* doc/filename.n:
+	* doc/glob.n:
+	* doc/open.n:
+	* doc/puts.n:
+	* doc/resource.n (removed):
+	* doc/safe.n:
+	* doc/source.n:
+	* doc/tclvars.n:
+	* doc/unload.n:
+	* generic/README:
+	* generic/tcl.decls:
+	* generic/tcl.h:
+	* generic/tclAlloc.c:
+	* generic/tclBasic.c:
+	* generic/tclCmdAH.c:
+	* generic/tclDate.c:
+	* generic/tclDecls.h:
+	* generic/tclFCmd.c:
+	* generic/tclFileName.c:
+	* generic/tclGetDate.y:
+	* generic/tclIOCmd.c:
+	* generic/tclIOUtil.c:
+	* generic/tclInitScript.h:
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclMain.c:
+	* generic/tclMath.h:
+	* generic/tclNotify.c:
+	* generic/tclPathObj.c:
+	* generic/tclPlatDecls.h:
+	* generic/tclPort.h:
+	* generic/tclStubInit.c:
+	* generic/tclTest.c:
+	* generic/tclThreadJoin.c:
+	* library/auto.tcl:
+	* library/init.tcl:
+	* library/package.tcl:
+	* library/safe.tcl:
+	* library/tclIndex:
+	* mac/AppleScript.html (removed):
+	* mac/Background.doc (removed):
+	* mac/MW_TclAppleScriptHeader.h (removed):
+	* mac/MW_TclAppleScriptHeader.pch (removed):
+	* mac/MW_TclBuildLibHeader.h (removed):
+	* mac/MW_TclBuildLibHeader.pch (removed):
+	* mac/MW_TclHeader.h (removed):
+	* mac/MW_TclHeader.pch (removed):
+	* mac/MW_TclHeaderCommon.h (removed):
+	* mac/MW_TclStaticHeader.h (removed):
+	* mac/MW_TclStaticHeader.pch (removed):
+	* mac/MW_TclTestHeader.h (removed):
+	* mac/MW_TclTestHeader.pch (removed):
+	* mac/README (removed):
+	* mac/bugs.doc (removed):
+	* mac/libmoto.doc (removed):
+	* mac/morefiles.doc (removed):
+	* mac/porting.notes (removed):
+	* mac/tclMac.h (removed):
+	* mac/tclMacAETE.r (removed):
+	* mac/tclMacAlloc.c (removed):
+	* mac/tclMacAppInit.c (removed):
+	* mac/tclMacApplication.r (removed):
+	* mac/tclMacBOAAppInit.c (removed):
+	* mac/tclMacBOAMain.c (removed):
+	* mac/tclMacChan.c (removed):
+	* mac/tclMacCommonPch.h (removed):
+	* mac/tclMacDNR.c (removed):
+	* mac/tclMacEnv.c (removed):
+	* mac/tclMacExit.c (removed):
+	* mac/tclMacFCmd.c (removed):
+	* mac/tclMacFile.c (removed):
+	* mac/tclMacInit.c (removed):
+	* mac/tclMacInt.h (removed):
+	* mac/tclMacInterupt.c (removed):
+	* mac/tclMacLibrary.c (removed):
+	* mac/tclMacLibrary.r (removed):
+	* mac/tclMacLoad.c (removed):
+	* mac/tclMacMath.h (removed):
+	* mac/tclMacNotify.c (removed):
+	* mac/tclMacOSA.c (removed):
+	* mac/tclMacOSA.r (removed):
+	* mac/tclMacPanic.c (removed):
+	* mac/tclMacPkgConfig.c (removed):
+	* mac/tclMacPort.h (removed):
+	* mac/tclMacProjects.sea.hqx (removed):
+	* mac/tclMacResource.c (removed):
+	* mac/tclMacResource.r (removed):
+	* mac/tclMacSock.c (removed):
+	* mac/tclMacTclCode.r (removed):
+	* mac/tclMacTest.c (removed):
+	* mac/tclMacThrd.c (removed):
+	* mac/tclMacThrd.h (removed):
+	* mac/tclMacTime.c (removed):
+	* mac/tclMacUnix.c (removed):
+	* mac/tclMacUtil.c (removed):
+	* mac/tcltkMacBuildSupport.sea.hqx (removed):
+	* tests/all.tcl:
+	* tests/binary.test:
+	* tests/cmdAH.test:
+	* tests/cmdMZ.test:
+	* tests/fCmd.test:
+	* tests/fileName.test:
+	* tests/fileSystem.test:
+	* tests/interp.test:
+	* tests/io.test:
+	* tests/ioCmd.test:
+	* tests/load.test:
+	* tests/macFCmd.test (removed):
+	* tests/osa.test (removed):
+	* tests/resource.test (removed):
+	* tests/socket.test:
+	* tests/source.test:
+	* tests/unload.test:
+	* tools/cvtEOL.tcl (removed):
+	* tools/genStubs.tcl:
+	* unix/Makefile.in:
+	* unix/README:
+	* unix/mkLinks:
+	* unix/tcl.spec:
+	* win/README.binary:
+	* win/tcl.dsp:
+
+2004-03-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lsearch.n: Improved examples on the advanced capabilities of
+	lsearch (with the right options, set element removal can be done)
+	following discussion on tkchat.
+
+2004-03-16  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/catch.n:	Compiled [catch] no longer fails to catch syntax
+	errors. Removed the claims in the documentation that it does.
+	* doc/return.n:	Updated example to use [dict merge].
+
+2004-03-16  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/configure, unix/tcl.m4: add -Wno-strict-aliasing for GCC to
+	suppress useless type puning warnings.
+
+2004-03-16  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/file.n: *roff formatting fix. [Bug 917171]
+
+2004-03-15  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinNotify.c: Fixed a mistake where the return value of
+	MsgWaitForMultipleObjectsEx for "a message is in the queue" wasn't
+	accurate. I removed the check on the case result==(WAIT_OBJECT_0 + 1)
+	This was having the error of falling into GetMessage and waiting there
+	by accident, which wasn't alertable through Tcl_AlertNotifier. I'll do
+	some more study on this and try to find-out why.
+
+2004-03-12  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	IMPLEMENTATION OF TIP#163
+	* generic/tclDictObj.c (DictMergeCmd):	This is based on work by Joe
+	* tests/dict.test (dict-20.*):		English in Tcl [FRQ 745851]
+	* doc/dict.n:				but not exactly.
+
+2004-03-10  Kevin B. Kenny <kennykb@acm.org>
+
+	* generic/tclGetDate.y (TclGetDate): Fix so that [clock scan
+	<timeOfDay> -gmt true] uses the GMT base date instead of the local
+	one. [Bug 913513]
+	* tests/clock.test: Added test cases for wrong ISO8601 week number
+	[Bug 500285] and wrong GMT base date [Bug 913513]. Several tests still
+	fail on Windows, and these are actual faults in [clock scan]. Fix is
+	still pending.
+	* generic/tclDate.c: Regenerated.
+
+2004-03-08  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:  Fix to 'glob -path' near the root
+	* tests/fileName.test:	  of the filesystem. [Bug 910525]
+
+2004-03-08  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclParse.c (TclParseInit):	Modified TclParseInit so
+	* generic/tclTest.c ([testexprparser]): that Tcl_Parse initialization
+	conforms to documented promised about what fields will not be
+	modified by what Tcl_Parse* routines. [Bug 910595]
+
+2004-03-05  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/configure.in: Check for define of MWMO_ALERTABLE in winuser.h.
+	* win/tclWinPort.h: If MWMO_ALERTABLE is not defined in winuser.h then
+	define it. This is needed for Mingw.
+
+2004-03-05  Kevin B. Kenny <kennykb@acm.org>
+
+	* generic/tclTest.c: Modified TesteventObjCmd to use a
+	Tcl_QueuePosition in place of an 'int' for the enumerated queue
+	position, to avoid a compiler warning on SGI. [Bug 771960]
+
+2004-03-05  Kevin B. Kenny <kennykb@acm.org>
+
+	* tests/registry.test: Applied fix from [Patch 910174] to make the test
+	for an English-language system include any country code, rather than
+	just English-United States.1252. Thanks to Pat Thoyts for the changes.
+
+2004-03-04  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* tests/registry.test: Applied fixed from [Bug 766159] to skip two
+	tests on Win98 that depend on a Unicode registry (NT specific).
+
+2004-03-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h (TclParseInit):	Factored the common code
+	* generic/tclParse.c (TclParseInit):	for initializing a Tcl_Parse
+	* generic/tclParseExpr.c:		struct into one routine.
+
+2004-03-04  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* library/reg/pkgIndex.tcl:  Added TIP #100 support to the
+	* win/tclWinReg.c:	     registry package [patch 903831]
+	This provides a Windows test of the TIP #100 mechanism and a sample to
+	show how unloading an extension can be done.
+
+2004-03-04  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/dltest/pkgua.c: Fix minor syntax problems. [Bug 909288]
+
+2004-03-03  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	*** 8.5a1 TAGGED FOR RELEASE ***
+
+	* changes: updated for 8.5a1
+
+2004-03-03  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: default environment variable for VC++ is %MSDevDir%
+	not %MSVCDir%, although vcvars32.bat sets both.
+
+	* win/tclWinNotify.c (Tcl_WaitForEvent) : Allows an idling notifier to
+	service "Asynchronous Procedure Calls" from its wait state. Only
+	useful for extension authors who decide they might want to try
+	"completion routines" with WriteFileEx(), as an example. From
+	experience, I recommend that "completion ports" should be used instead
+	as the execution of the callbacks are more managable.
+
+2004-03-01  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* README:	    update patchlevel to 8.5a1
+	* generic/tcl.h:
+	* tools/tcl.wse.in, tools/tclSplash.bmp:
+	* unix/configure, unix/configure.in, unix/tcl.spec:
+	* win/README.binary, win/configure, win/configure.in:
+
+	* unix/tcl.m4: update HP-11 build libs setup
+
+2004-03-01  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tcl.m4 (SC_CONFIG_CFLAGS):	Allow 64-bit enabling on
+	IRIX64-6.5* systems. [Bug 218561]
+	* unix/configure:	autoconf-2.57
+
+	* generic/tclTrace.c (TclCheckInterpTraces):	The TIP 62
+	* generic/tclTest.c (TestcmdtraceCmd):	implementation introduced a
+	* tests/trace.test (trace-29.10):	bug by testing the CallFrame
+	level instead of the iPtr->numLevels level when deciding what traces
+	created by Tcl_Create(Obj)Trace to call. Added test to expose the
+	error, and made fix. [FRQ 462580]
+
+2004-02-28  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fileSystem.test: fix to Tcl Bug 905163.
+	* tests/fileName.test: fix to Tcl Bug 904705.
+
+	* doc/{various}.n: removed 'the the' typos.
+
+2004-02-26  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: fixed copyright year in Tcl.framework Info.plist
+
+2004-02-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/basic.test:	Made several tests more robust to the
+	* tests/cmdMZ.test:	list-quoting of path names that might contain
+	* tests/exec.test:	Tcl-special chars like { or [. Should help us
+	* tests/io.test:	sort out [Bug 554068]
+	* tests/pid.test:
+	* tests/socket.test:
+	* tests/source.test:
+	* tests/unixInit.test:
+
+2004-02-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclLoad.c (Tcl_LoadObjCmd): Missing dereference caused
+	segfault with non-loadable extension. [Bug 904307]
+
+	* unix/tclUnixChan.c (TcpGetOptionProc): Stop memory leak with very
+	long hostnames. [Bug 888777]
+
+2004-02-25  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* win/tclWinDde.c: Removed some gcc warnings - except for the
+	-Wconversion warning for GetGlobalAtomName. gcc is just wrong about
+	this.
+
+2004-02-24  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	IMPLEMENTATION OF TIP#100 FROM GEORGIOS PETASIS
+	* generic/tclLoad.c (Tcl_UnloadObjCmd): Implementation.
+	* tests/unload.test:			Test suite.
+	* unix/dltest/pkgua.c:			Helper for test suite.
+	* doc/unload.n:				Documentation.
+	Also assorted changes (mostly small) to several other files.
+
+2004-02-23  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/regc_locale.c (cclass): Buffer was having its size reset
+	instead of being released => memleak. [Bug 902562]
+
+2004-02-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclLoad.c (Tcl_LoadObjCmd): Fixed memory leak due to an
+	improper error exit route.
+
+2004-02-20  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinSock.c (SocketThreadExitHandler): Don't call
+	TerminateThread when WaitForSingleObject returns a timeout.
+	Tcl_Finalize called from DllMain will pause all threads. Trust that
+	the thread will get the close notice at a later time if it does ever
+	wake up before being cleaned up by the system anyway.
+
+2004-02-17  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/tcltest.n:
+	* library/tcltest/tcltest.tcl:	Changed -verbose default value to
+	{body error} so that detailed information on unexpected errors in
+	tests is provided by default, even after the fix for [Bug 725253]
+
+2004-02-17  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* tests/unixInit.test (unixInit-7.1):
+	* unix/tclUnixInit.c (TclpInitPlatform): ensure the std fds exist to
+	prevent crash condition [Bug 772288]
+
+2004-02-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Bozo mistake in memory
+	releasing order when in an error case. [Bug 898910]
+
+2004-02-16  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclTrace.c (TclTraceExecutionObjCmd)
+	(TclTraceCommandObjCmd): fix possible mem leak in trace info.
+
+2004-02-12  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWinInit.c (AppendEnvironment): Use the tail component of the
+	passed in lib path instead of just blindly using lib+4. That worked
+	when lib was "lib/..." but fails for other values. Thanks go to
+	Patrick Samson for pointing this out.
+
+2004-02-10  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/nmakehlp.c: better macro grepping logic.
+
+2004-02-07  David Gravereaux  <davygrvy@pobox.com>
+
+	* win/makefile.vc:
+	* win/rules.vc:
+	* win/tcl.rc:
+	* win/tclsh.rc: Added an 'unchecked' option to the OPTS macro so a
+	core built with symbols can be linked to the non-debug enabled C
+	run-time. As per discussion with Kevin Kenny. Called like this:
+
+		nmake -af makefile.vc OPTS=unchecked,symbols
+
+	This clarifies the meaning of the 'g' naming suffix to mean only that
+	the binary requires the debug enabled C run-time. Whether the binary
+	contains symbols or not is a different condition.
+
+2004-02-06  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/clock.n:	Removed reference to non-existent [file ctime].
+
+2004-02-05  David Gravereaux  <davygrvy@pobox.com>
+
+	* docs/tclvars.n: Added clarification of the tcl_platform(debug) var
+	that it only refers to the flavor of the C run-time, and not whether
+	the core contains symbols.
+
+2004-02-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclFileName.c (SkipToChar): Corrected CONST and type-casting
+	issues that caused compiler warnings.
+
+2004-02-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCmdAH.c (StoreStatData): Removed improper refcount
+	decrement of the varName parameter. This error was causing segfaults
+	following test cmdAH-28.7.
+
+	* library/tcltest/tcltest.tcl: Corrected references to non-existent
+	$name variable in [cleanupTests]. [Bug 833637]
+
+2004-02-03  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	Corrected parsing of single command
+	line argument (option with missing value) [Bug 833910]
+	* library/tcltest/pkgIndex.tcl:	Bump to version 2.2.5.
+
+2004-02-02  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tclIO.c (Tcl_Ungets): Fixes improper filling of the channel
+	buffer. This is the buffer before the splice. [Bug 405995]
+
+2004-02-01  David Gravereaux <davygrvy@pobox.com>
+
+	* tests/winPipe.test: more pass-thru commandline verifications.
+	* win/tclWinPipe.c (BuildCommandLine): Special case quoting for '{'
+	not required by the c-runtimes's parse_cmdline().
+	* win/tclAppInit.c: Removed our custom setargv() in favor of the work
+	provided by the c-runtime. [Bug 672938]
+
+	* win/nmakehlp.c: defensive techniques to avoid static buffer
+	overflows and a couple envars upsetting invokations of cl.exe and
+	link.exe. [Bug 885537]
+
+	* tests/winPipe.test: Added proof that BuildCommandLine() is not doing
+	the "N backslashes followed a quote -> insert N * 2 + 1 backslashes
+	then a quote" rule needed for the crt's parse_cmdline().
+	* win/tclWinPipe.c: Fixed BuildCommandLine() to pass the new cases.
+
+2004-01-30  David Gravereaux <davygrvy@pobox.com>
+
+	* win/makefile.vc: Use the -GZ compiler switch when building for
+	symbols. This is supposed to emulate the release build better to avoid
+	hiding problems that only show themselves in a release build.
+
+2004-01-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: fix to [Bug 883143] in file normalization
+
+2004-01-29  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/file.n:
+	* generic/tclFCmd.c
+	* generic/tclTest.c
+	* library/init.tcl
+	* mac/tclMacFile.c
+	* tests/fileSystem.test: fix to [Bug 886352] where 'file copy -force'
+	had inconsistent behaviour wrt target files with insufficient
+	permissions, particular from vfs->native fs. Behaviour of '-force' is
+	now always consistent (and now consistent with behaviour of 'file
+	delete -force'). Added new tests and documentation and cleaned up the
+	'simplefs' test filesystem.
+
+	* generic/tclIOUtil.c
+	* unix/tclUnixFCmd.c
+	* unix/tclUnixFile.c
+	* win/tclWinFile.c: made native filesystems more robust to C code
+	which asks for mount lists.
+
+	* generic/tclPathObj.c: fix to [Bug 886607] removing warning/error
+	with some compilers.
+
+2004-01-28  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclObj.c (SetBooleanFromAny): Rewrite to do more efficient
+	string->bool conversion.
+	Many other minor whitespace/style fixes to this file too.
+
+2004-01-27  David Gravereaux <davygrvy@pobox.com>
+
+	* win/nmakehlp.c: Use '.\nul' as the sourcefile name instead of 'nul'
+	so VC 5.2 doesn't try searching the path for it and failing with a
+	possible dialogbox popping up about having to add a CD to an empty
+	drive. Also added a SetErrorMode() call to disable any dialogs that
+	cl.exe or link.exe might create. [Bug 885537]
+
+2004-01-22  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/file.n: clarified documentation of 'file system' [Bug 883825]
+	* tests/fCmd.test: improved test result in failure case.
+
+2004-01-22  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* tests/fileSystem.test: 3 new tests
+	* generic/tclPathObj.c: fix to [Bug 879555] in file normalization.
+	* doc/filename.n: small clarification to Windows behaviour with
+	filenames like '.....', 'a.....', '.....a'.
+
+	* generic/tclIOUtil.c: slight improvement to native cwd caching on
+	Windows.
+
+2004-01-21  David Gravereaux <davygrvy@pobox.com>
+
+	* doc/Panic.3:	Mentions of 'panic' and 'panicVA' removed from the
+	documentation.
+
+2004-01-21  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* doc/FileSystem.3:
+	* generic/tcl.decls:
+	* generic/tclCmdAH.c
+	* generic/tclDecls.h
+	* generic/tclFCmd.c
+	* generic/tclFileName.c
+	* generic/tclFileSystem.h
+	* generic/tclIOUtil.c
+	* generic/tclInt.decls
+	* generic/tclInt.h
+	* generic/tclIntDecls.h
+	* generic/tclPathObj.c
+	* generic/tclStubInit.c
+	* generic/tclTest.c
+	* mac/tclMacFile.c
+	* tests/fileName.test
+	* tests/fileSystem.test
+	* tests/winFCmd.test
+	* unix/tclUnixFile.c
+	* win/tclWin32Dll.c
+	* win/tclWinFCmd.c
+	* win/tclWinFile.c
+	* win/tclWinInt.h
+
+	Three main issues accomplished: (1) cleaned up variable names in the
+	filesystem code so that 'pathPtr' is used throughout. (2) applied a
+	round of filesystem optimisation with better handling and caching of
+	relative and absolute paths, requiring fewer conversions. (3)
+	clarifications to the documentation, particularly regarding the
+	acceptable refCounts of objects. Some new tests added. Tcl benchmarks
+	show a significant improvement over 8.4.5, and on Windows typically a
+	small improvement over 8.3.5 (Unix still appears to require
+	optimisation). TCL_FILESYSTEM_VERSION_2 introduced, but for internal
+	use only. There should be no public incompatibilities from these
+	changes. Thanks to dgp for extensive testing.
+
+2004-01-19  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinPipe.c (Tcl_WaitPid): Fixed a thread-safety problem with
+	the process list. The delayed cut operation after the wait was going
+	stale by being outside the list lock. It now cuts within the lock and
+	does a locked splice for when it needs to instead. [Bug 859820]
+
+2004-01-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCompile.c, generic/tclCompile.h: Two new opcodes,
+	INST_LIST_INDEX_IMM and INST_LIST_RANGE_IMM, that have operand(s) of
+	new type OPERAND_IDX4 which represents indexes into things like lists
+	(and perhaps other things eventually.)
+	* generic/tclExecute.c (TclExecuteByteCode): Implementation of the new
+	opcodes. INST_LIST_INDEX_IMM does a simple [lindex] with either front-
+	or end-based simple indexing. INST_LIST_RANGE_IMM does an [lrange]
+	with front- or end-based simple indexing for both the reference to the
+	first and last items in the range.
+	* generic/tclCompCmds.c (TclCompileLassignCmd): Generate bytecode for
+	the [lassign] command.
+
+2004-01-17  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinInit.c: added #pragma comment(lib, "advapi32.lib") when
+	compiling under VC++ so we don't need to specify it when linking.
+
+2004-01-17  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCmdIL.c (Tcl_LassignObjCmd): Add more shimmering
+	protection for when the list is also one of the variables.
+
+	BASIC IMPLEMENTATION OF TIP#57
+	* generic/tclCmdIL.c (Tcl_LassignObjCmd): Implementation of the
+	[lassign] command that takes full advantage of Tcl's object API.
+	* doc/lassign.n: New file documenting the command.
+	* tests/cmdIL.test (cmdIL-6.*): Test suite for the command.
+
+2004-01-15  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinReg.c: Placed the requirement for advapi.lib into the
+	object file itself with #pragma comment (lib, ...) when built with
+	VC++. This will simplify linking for users of the static library.
+
+	* win/rules.vc: Added new 'fullwarn' to the CHECKS commandline macro;
+	sets $(FULLWARNINGS).
+
+	* win/makefile.vc: Removed 'advapi.lib' from $(baselibs). Added new
+	logic to crank-up the warning levels for both compile and link when
+	$(FULLWARNINGS) is set. Some clean-up with how the resource files are
+	built and how -DTCL_USE_STATIC_PACKAGES is sent when compiling the
+	shells.
+
+	* win/tclAppInit.c: Small change in how TCL_USE_STATIC_PACKAGES is
+	used.
+
+	* win/tcl.rc:
+	* win/tclsh.rc: Some clean-up with how the resource files are built.
+	Fixed 'OriginalFilename' problem that still thought a debug suffix was
+	still 'd', now is 'g'.
+
+2004-01-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclDictObj.c (TraceDictPath, DictExistsCmd): Adjusted
+	behaviour of [dict exists] so a failure to look up a dictionary along
+	the path of dicts doesn't trigger an error. This is how it was
+	documented to behave previously... [Bug 871387]
+
+	* generic/tclDictObj.c: Assorted dict fixes from Peter Spjuth relating
+	to [Bug 876170].
+	(SetDictFromAny): Make sure that lists retain their ordering even when
+	converted to dictionaries and back.
+	(TraceDictPath): Correct object reference count handling!
+	(DictReplaceCmd, DictRemoveCmd): Stop object leak.
+	(DictIncrCmd,DictLappendCmd,DictAppendCmd,DictSetCmd,DictUnsetCmd):
+	Simpler handling of reference counts when assigning to variables.
+	* tests/dict.test (dict-19.2): Memory leak stress test
+
+2004-01-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd):  Silence compiler warnings.
+
+	Patch 876451: restores performance of [return]. Also allows forms such
+	as [return -code error $msg] to be bytecompiled.
+
+	* generic/tclInt.h:	Factored Tcl_ReturnObjCmd() into two pieces:
+	* generic/tclCmdMZ.c:	TclMergeReturnOptions(), which can parse the
+	options to [return], check their validity, and create the
+	corresponding return options dictionary, and TclProcessReturn(), which
+	takes that return options dictionary and performs the [return]
+	operation.
+
+	* generic/tclCompCmds.c: Rewrote TclCompileReturnCmd() to call
+	TclMergeReturnOptions() at compile time so the return options
+	dictionary is computed at compile time (when it is fully known). The
+	dictionary is pushed on the stack along with the result, and the code
+	and level values are included in the bytecode as operands. Also
+	supports optimized compilation of un-[catch]ed [return]s from procs
+	with default options into the INST_DONE instruction.
+
+	* generic/tclExecute.c: Rewrote INST_RETURN instruction to retrieve
+	the code and level operands, pop the return options from the stack,
+	and call TclProcessReturn() to perform the [return] operation.
+
+	* generic/tclCompile.h:	New utilities include TclEmitInt4 macro
+	* generic/tclCompile.c:	and TclWordKnownAtCompileTime().
+
+	End Patch 876451.
+
+	* generic/tclFileName.c (Tcl_GlobObjCmd): Latest changes to management
+	of the interp result by Tcl_GetIndexFromObj() exposed improper interp
+	result management in the [glob] command procedure. Corrected by
+	adopting the Tcl_SetObjResult(Tcl_NewStringObj) pattern. This stopped
+	a segfault in test filename-11.36. [Bug 877677]
+
+2004-01-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclIndexObj.c (Tcl_GetIndexFromObjStruct, Tcl_WrongNumArgs):
+	Create fresh objects instead of using the one currently in the
+	interpreter, which isn't guaranteed to be fresh and unshared. The cost
+	for the core will be minimal because of the object cache, and this
+	fixes [Bug 875395].
+
+2004-01-12  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompExpr.c (CompileLandOrLorExpr): cosmetic changes.
+
+2004-01-12  Miguel Sofer <msofer@users.sf.net>
+
+	* generic/tclCompExpr.c (CompileLandOrLorExpr): new logic, fewer
+	instructions. As a side effect, the instructions INST_LOR and
+	INST_LAND are now never used.
+	* generic/tclExecute.c (INST_JUMP*): small optimisation; fix a bug in
+	debug code.
+
+2004-01-11  David Gravereaux <davygrvy@pobox.com>
+
+	* win/tclWinThrd.c (Tcl_ConditionNotify): condPtr must be dereferenced
+	to see if there are waiters else uninitialized datum is manipulated.
+	[Bug 849007 789338 745068]
+
+2004-01-09  David Gravereaux <davygrvy@pobox.com>
+
+	* generic/tcl.h: Renamed and deprecated #defines moved to within the
+	#ifndef TCL_NO_DEPRECATED block. This allows us to build Tcl to check
+	for deprecated functions in use, such as panic() and Tcl_Ckalloc(). By
+	request from DKF. Extensions that build with -DTCL_NO_DEPRECATED now
+	have these macros as restricted.
+	***POTENTIAL INCOMPATIBILITY***
+
+	* win/makefile.vc:
+	* win/rules.vc:	 Added -DTCL_NO_DEPRECATED usage to makefile.vc.
+	Called like this:   nmake -af makefile.vc CHECKS=nodep
+
+2004-01-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: fix to infinite loop in TclFinalizeFilesystem
+	[Bug 873311]
+
+	******************************************************************
+	*** CHANGELOG ENTRIES FOR 2003 IN "ChangeLog.2003"	       ***
+	*** CHANGELOG ENTRIES FOR 2002 IN "ChangeLog.2002"	       ***
+	*** CHANGELOG ENTRIES FOR 2001 IN "ChangeLog.2001"	       ***
+	*** CHANGELOG ENTRIES FOR 2000 IN "ChangeLog.2000"	       ***
+	*** CHANGELOG ENTRIES FOR 1999 AND EARLIER IN "ChangeLog.1999" ***
+	******************************************************************
diff --git a/ChangeLog.2005 b/ChangeLog.2005
new file mode 100644
index 0000000..0d1d7cf
--- /dev/null
+++ b/ChangeLog.2005
@@ -0,0 +1,3822 @@
+2005-12-30  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclStubLib.c: Corrected a typo in "missing Stubs table
+	pointer."
+
+2005-12-27  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tcl.decls:  Destubbed TclTomMathInitializeStubs - it is in
+	* generic/tcl.h:      the stub library, not the main shared
+	* generic/tclBasic.c: library. Exported Tcl_InitBignumFromDouble.
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclStrToD.c:
+
+	* generic/tclDecls.h:
+	* generic/tclStubLib.c:
+	* generic/tclStubInit.c: Regenerated.
+
+	* generic/clock.tcl: Reverted to using the time zone abbreviation and
+	not its name to "stop the bleeding" on [Bug 1386377]. This is *not* a
+	good long-term solution, but there may not be one.
+
+	* libtommath/bn_mp_sqrt.c: Improved the initial approximation to the
+	square root, roughly doubling the speed of the routine. (This is a
+	local change that needs to be communicated to Tom.)
+
+	* win/Makefile.in: Corrected a bug where tommath_class.h and
+	tommath_superclass.h were not installed, making it impossible for
+	client code to compile against the tommath stubs.
+
+	* library/tzdata: Updated to Olson's tzdata2005r. (Latest changes to
+	Daylight Saving Time in Canada, plus redefinition of the Posix-style
+	zones [e.g., EST5EDT] to be locale-independent.)
+
+	* libtommath: Updated to Tom St.Denis's release 0.37.
+
+2005-12-20  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclThreadAlloc.c (Tcl_GetMemoryInfo): Format values as longs
+	and not ints, so they are less likely to wrap on 64-bit machines.
+
+2005-12-19  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c:	Modified [string is double] to use
+	* tests/string.test:	TclParseNumber() to parse trailing whitespace.
+	Ensures consistency, and makes it easier to cleanup after invalid
+	internal reps left behind by parsing [Bugs 1360532 1382287].
+
+	* generic/tclParseExpr.c:	Added TCL_PARSE_NO_WHITESPACE to
+	* generic/tclScan.c:	TclParseNumber() calls since [scan] and [expr]
+	* tests/scan.test:	parsing don't want spaces in parsed numbers.
+
+	* generic/tclInt.h:	Added TCL_PARSE_NO_WHITESPACE flag to the
+	* generic/tclStrToD.c:	TclParseNumber() interface.
+
+2005-12-19  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* doc/Tcl.n: Clarify what is going on in variable substitution
+	following thread on comp.lang.tcl.
+
+2005-12-18  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclCompCmds.c (TclCompileDictCmd): Ensure that we only do an
+	'endCatch' when there's a preceding 'beginCatch'. [Bug 1382528] Many
+	thanks to Anton Kovalenko for finding this and pointing out that it was
+	a catch stack handling problem!
+
+2005-12-14  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclIOUtil.c: workaround gcc warning "comparison is always
+	* generic/tclTest.c:   false due to limited range of data type".
+
+	* macosx/Tcl.xcode/project.pbxproj:
+	* macosx/Tcl.xcodeproj/project.pbxproj:
+	* unix/Makefile.in: add new tclTomMath* files.
+
+	* generic/tclBasic.c: replace panic with Tcl_Panic.
+
+2005-12-13  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tcl.decls:    Added changes to export an additional stubs
+	* generic/tclBasic.c:   table to represent the 'libtommath' routines
+	* generic/tclDecls.h:   that Tcl uses and export them to callers.
+	* generic/tclInt.decls: Reran 'genstubs'
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclStubInit.c:
+	* generic/tclStubLib.c:
+	* generic/tclTomMath.decls:
+	* generic/tclTomMath.h:
+	* generic/tclTomMathDecls.h:
+	* generic/tclTomMathInterface.c:
+	* generic/tommath.h:
+	* tools/fix_tommath_h.tcl:
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/makefile.vc:
+
+	* generic/tclClock.c:   Made changes to silence a number of compiler
+	* generic/tclIO.c:	warnings when building with mingw.
+	* generic/tclIORChan.c:
+	* generic/tclLink.c:
+	* generic/tclListObj.c:
+	* generic/tclObj.c:
+	* generic/tclParseExpr.c:
+	* generic/tclProc.c:
+	* generic/tclTimer.c:
+	* win/tclWinChan.c:
+	* win/tclWinConsole.c:
+	* win/tclWinDde.c:
+	* win/tclWinFCmd.c:
+	* win/tclWinFile.c:
+	* win/tclWinReg.c:
+	* win/tclWinSock.c:
+
+2005-12-13  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclExecute.c (TEBC:DICT_FIRST,DICT_DONE): Only decrease the
+	references to the dictionary once the iteration completes. Do this by
+	storing the dict in the iterator context variable. [Bug 1379349] Thanks
+	to Ulrich Ring and Tobias Hippler for finding this.
+
+2005-12-12  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tcl.m4, unix/configure: Fix sh quoting error reported in
+	bash-3.1+ [Bug 1377619] (schafer)
+
+2005-12-12  Kevin B. Kenny  <kennykb@acm.org>
+
+	* doc/mathfunc.n: Changed two examples from the incorrect 'tcl::math::'
+	to 'tcl::mathfunc::' [Bug 1378818]
+
+2005-12-09  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/configure: Regen.
+	* win/tcl.m4 (SC_CONFIG_CFLAGS): Define MACHINE for gcc builds. The
+	lack of a definition of this variable in the manifest file was causing
+	a runtime error in wish built with gcc.
+
+2005-12-09  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* tests/lsearch.test (lsearch-10.8..10):  If the -start is off the end,
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): searching should find nothing
+	at all. [Bug 1374778]
+
+2005-12-08  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/Makefile.in, win/makefile.vc: Add Win x64 and CE build support
+	* win/tcl.m4, win/configure:        CE still requires C code fixes.
+
+	* generic/tcl.h: use struct __stat64 (not _stat64) for MSC_VER >= 1400
+	(i.e. latest Platform SDK).
+
+2005-12-07  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* doc/socket.n: Cross-referenced the socket documentation better to the
+	fconfigure documentation on the topic of asynch sockets.
+	* doc/fconfigure.n: Added keyword to documentation of -blocking option
+	so that people looking for "asynch" can find it as well.
+
+2005-12-05  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclUnixPort.h (Darwin): fix incorrect __DARWIN_UNIX03 configure
+	overrides that were originally copied from Darwin CVS (rdar://3693001)
+
+2005-12-05  Kevin B. Kenny  <kennykb@acm.org>
+
+	* tools/tclZIC.tcl: Updated to reflect changes in calling sequence when
+	GetJulianDateFromEraYearMonthDay moved to C.
+	* library/tzdata: Regenerated from Olson's tzdata2005p.tar.gz - the
+	'systemv' changes appear not to affect Tcl's processing of the dates.
+
+2005-12-05  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/configure.in: move check for fts API to configure.in and run it
+	* unix/tcl.m4:       on all platforms, since Linux glibc2 and *BSDs
+	also have this; using fts is more efficient than a recursive
+	opendir/readdir.
+	* unix/tclUnixFCmd.c (TraverseUnixTree): add support to fts code for
+	platforms with stat64.
+	* unix/configure:
+	* unix/tclConfig.h.in: regen.
+
+2005-12-05  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/configure:     Use fts file API on Darwin if available.
+	* unix/tcl.m4:        Addresses file delete issues in readdir noted
+	* unix/tclUnixFCmd.c: in [Bug 1034337]. (steffen)
+	Remove redundant stat call for each file in DoCopyFile. (steffen)
+
+2005-12-02  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclClock.c: Moved a tiny bit more of [clock format] from run
+	* library/clock.tcl: time to compile time, and fixed a l10n bug in the
+	process. [Bug 1371446]. Also, conditoned the call to SetupTimeZone to
+	speed the common case where TZData($timezone) already exists, and
+	achieved a puny speedup by making ::tcl::clock::getenv not throw
+	errors.
+	* unix/Makefile.in: Made some changes to support a 'make' command that
+	is present on some antiquated versions of Solaris.
+
+2005-12-01  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl: Continued rationalizing the code, eliminating
+	numerous redundant [mc] calls. Added another time boost by precompiling
+	a [::format] command to do the bulk of the work of [clock format].
+
+2005-12-01  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* unix/Makefile.in: Add remaining dependency info. While automated
+	maintenance of this information would be good, having it at all is much
+	better than a poke in the eye with a sharp stick...
+
+2005-12-01  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclClock.c: fix warning.
+
+	* unix/tcl.m4 (Darwin): fix error when MACOSX_DEPLOYMENT_TARGET unset
+	* unix/configure: regen.
+
+2005-11-30  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* unix/Makefile.in: Add dependency information relating to tclCompile.h
+	since when the list of opcodes changes it is usually useful to rebuild
+	everything that depends on it (but which is nonetheless a small
+	fraction of the total set of Tcl source files).
+
+	***POTENTIAL INCOMPATIBILITY*** for bytecode savers/loaders. See below
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Arrange for very simple
+	[switch] invokations to be compiled into hash lookups into jump tables;
+	only a very specific kind of [switch] can be safely compiled this way,
+	but that happens to be the most common kind. This makes around 5-10%
+	difference to the speed of execution of clock.test.
+	* generic/tclExecute.c (TEBC:INST_JUMP_TABLE): New instruction to allow
+	for jumps to locations looked up in a hashtable. Requires a new AuxData
+	type, tclJumptableInfoType (supported by the functions DupJumptableInfo
+	and FreeJumptableInfo in tclCompCmds.c) so anything that saves bytecode
+	containing this *must* be updated!
+
+2005-11-30  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclClock.c: Fixed a bad refcount in previous commit that led
+	to a corrupted heap. Also silenced a warning that some compilers gave
+	about the excessively long constant for JULIAN_SEC_POSIX_EPOCH. Also
+	fixed a bug where [clock format] would fail in the :localtime zone for
+	times before the Posix Epoch. Thanks to Miguel Sofer for pointing out
+	all of these. Also rationalized the code a little bit by moving parts
+	of [clock scan] into C, eliminating some code that was duplicated in
+	the C and Tcl layers.
+
+2005-11-29  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclBasic.c:	Moved a big part of [clock format] down
+	* generic/tclClock.c:   to the C level in order to make it go faster.
+	* generic/tclInt.h:     Preliminary measurements suggest that it
+	* generic/clock.tcl:    more than doubles in speed with this change.
+
+2005-11-29  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd): Allow [lsearch -regexp] to
+	process REs that contain backreferences. This expensive mode of
+	operation is only used if the RE would otherwise cause a compilation
+	failure. [Bug 1366683]
+
+2005-11-28  Kevin Kenny  <kennykb@acm.org>
+
+	* tools/tclZIC.tcl (convertTimeOfDay): Corrected a typo that caused
+	wrong DST transitions in any time zone where the transition is
+	specified as local Standard Time (as opposed to wall-clock or UTC).
+	(Also updated the code to be bignum-safe.)
+	* tests/clock.test (clock-51.1): Added regression test for the above.
+	* library/tzdata: Updated to Olson's 'tzdata2005o' (changes for Cuba,
+	Nicaragua, Jordan, and Georgia) and regenerated. Thanks to Paul
+	Mackerras for reporting this problem.
+
+2005-11-27  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tcl.m4 (Darwin): add 64bit support, check for Tiger copyfile(),
+	add CFLAGS to SHLIB_LD to support passing -isysroot in env(CFLAGS) to
+	configure (flag can't be present twice, so can't be in both CFLAGS and
+	LDFLAGS during configure), don't use -prebind when deploying on 10.4,
+	define TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING (rdar://3171542).
+	(SC_ENABLE_LANGINFO, SC_TIME_HANDLER): add/fix caching, fix obsolete
+	autoconf macros. Sync with tk/unix/tcl.m4.
+
+	* unix/configure.in: fix obsolete autoconf macros, sync gratuitous
+	formatting/ordering differences with tk/unix/configure.in.
+
+	* unix/Makefile.in: add CFLAGS to tclsh/tcltest link to make executable
+	linking the same as during configure (needed to avoid losing any linker
+	relevant flags in CFLAGS, in particular flags that cannot be in
+	LDFLAGS). Avoid concurrent linking of tclsh and compiling of
+	tclTestInit.o or xtTestInit.o during parallel make.
+	(checkstubs, checkdoc, checkexports): dependency and Darwin fixes
+	(dist): add new macosx files.
+
+	* unix/tclLoadDyld.c (TclpDlopen): use NSADDIMAGE_OPTION_WITH_SEARCHING
+	on second NSAddImage only. [Bug 1204237]
+	(TclGuessPackageName): should not be MODULE_SCOPE.
+	(TclpLoadMemory): ppc64 and endian (i386) fixes, add support for
+	loading universal (fat) bundles from memory.
+
+	* unix/tclUnixFCmd.c:
+	* macosx/tclMacOSXFCmd.c: ppc64 and endian (i386) fixes.
+	(TclMacOSXCopyFileAttributes): add support for new Tiger copyfile() API
+	to enable copying of xattrs & ACLs by [file copy].
+
+	* generic/tcl.h: add Darwin specifc configure overrides for TCL_WIDE
+	defines to support fat compiles of ppc and ppc64 at the same time,
+	(replaces Darwin CVS fix by emoy, rdar://3693001). add/correct location
+	of version numbers in macosx files.
+
+	* generic/tclInt.h: clarify fat compile comment.
+
+	* unix/tclUnixPort.h: add Darwin specifc configure overrides to support
+	fat compiles, where configure runs only once for multiple architectures
+	(replaces Darwin CVS fix by emoy, rdar://3693001).
+
+	* macosx/tclMacOSXBundle.c:
+	* macosx/tclMacOSXNotify.c:
+	* unix/tclUnixNotfy.c:
+	* unix/tclUnixPort.h: fix #include order to support compile time
+	override of HAVE_COREFOUNDATION in tclUnixPort.h when building for
+	ppc64
+
+	* macosx/Tcl.pbproj/default.pbxuser (new file):
+	* macosx/Tcl.pbproj/jingham.pbxuser:
+	* macosx/Tcl.pbproj/project.pbxproj:
+	* macosx/Tcl.xcode/default.pbxuser (new file):
+	* macosx/Tcl.xcode/project.pbxproj (new file):
+	* macosx/Tcl.xcodeproj/default.pbxuser (new file):
+	* macosx/Tcl.xcodeproj/project.pbxproj (new file): new/updated
+	projects for Xcode 2.2 on 10.4, Xcode 1.5 on 10.3 & ProjectBuilder on
+	10.2, with native tcltest targets and support for universal (fat)
+	compiles.
+
+	* macosx/README: clarification/cleanup, document new Xcode projects and
+	universal (fat) builds via CFLAGS (i.e. all of ppc ppc64 i386 at once).
+
+	* unix/Makefile.in:
+	* unix/aclocal.m4:
+	* unix/configure.in:
+	* unix/dltest/Makefile.in:
+	* macosx/configure.ac (new file): add support for inclusion of
+	unix/configure.in by macosx/configure.ac, allows generation of a config
+	headers enabled configure script in macosx (required by Xcode
+	projects).
+
+	* macosx/GNUmakefile: rename from Makefile to avoid overwriting by
+	configure run in tcl/macosx, add support for reusing configure cache,
+	build target fixes, remove GENERIC_FLAGS override now handled by
+	tcl.m4.
+
+	* generic/tcl.decls: add Tcl_Main declaration as comment to avoid
+	'checkstubs' target complaining about it missing from stubs.
+
+	* generic/regex.h:
+	* generic/tclDate.c:
+	* generic/tclEnv.c:
+	* generic/tclGetDate.y:
+	* generic/tclIOUtil.c:
+	* generic/tclObj.c:
+	* generic/tclStubInit.c:
+	* generic/tclStubLib.c:
+	* generic/tclPathObj.c:
+	* generic/tclThreadAlloc.c:
+	* generic/tclThreadStorage.c:
+	* generic/tclTrace.c:
+	* generic/tclVar.c:
+	* generic/tommath.h:
+	* tools/fix_tommath_h.tcl:
+	* unix/tclUnixFCmd.c: ensure externally visible symbols not contained
+	in stubs table are declared as MODULE_SCOPE (or as static if not used
+	outside of own source file). These changes allow 'make checkstubs' to
+	complete without error on Darwin with gcc 4.
+
+	* generic/rege_dfa.c (getvacant):
+	* generic/regexec.c (cfind):
+	* generic/tclCompExpr.c (CompileSubExpr):
+	* generic/tclNamesp.c (NamespaceEnsembleCmd):
+	* unix/tclUnixChan.c (TclUnixWaitForFile): initialise variables to
+	silence gcc 4 warnings.
+
+	* generic/tclExecute.c (TclExecuteByteCode): fix unused variable
+	warning when NO_WIDE_TYPE is defined.
+
+	* generic/regguts.h: only #define NDEBUG if not already #defined.
+
+	* unix/tclUnixNotfy.c:
+	* macosx/tclMacOSXNotify.c: sync whitespace & comments.
+
+	* unix/tclUnixPort.h:
+	* win/tclWinPort.h: remove declaration of obsolete&unused TclpMutex
+	API.
+
+	* unix/configure:
+	* unix/tclConfig.h.in: regen.
+
+2005-11-21  Andreas Kupries  <andreask@activestate.com>
+
+	* unix/Makefile.in (install-libraries): Updated Makefile to new
+	* win/Makefile.in (install-libraries):  version of the http package.
+	This fixes the ifneeded/provide mismatch reported when trying to
+	require http. Should we maybe try to automatically extract the version
+	number from the http code to prevent future breakage ?
+
+	This follows the update of the version number by dgp on Nov 15 (No
+	entry found in the ChangeLog).
+
+2005-11-20  Joe English  <jenglish@users.sourceforge.net>
+
+	* generic/tclStubLib.c: Don't set tclStubsPtr to 0 when
+	Tcl_PkgRequireEx() fails [Fix for [Bug 1091431] "Tcl_InitStubs failure
+	crashes wish"]
+
+2005-11-18  Miguel Sofer  <msofer@users.sf.net>
+
+	* tests/trace.test (trace-34.5): [Bug 1047286], added a second test
+	illustrating the role of "ns in callStack" in the ns's visibility
+	during deletion traces.
+
+2005-11-18  Kevin B. Kenny  <kennykb@acm.org>
+
+	* doc/clock.n: Restored several missing lines near the %w format group
+	so that %w and %W are documented with their actual behaviour. [Bug
+	1359183]
+
+2005-11-18  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* generic/tclIO.c (TclFinalizeIOSubsystem): preserve statePtr until we
+	retrieve the next statePtr from it.
+
+2005-11-18  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclObj.c (GetBignumFromObj): replace NULL with
+	tclEmptyStringRep to stop memcpy from complaining in a debug build
+	(the corresponding branch is eliminated by the optimiser otherwise).
+
+2005-11-18  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c (TclFinalizeIOSubsystem): Applied Pat Thoyts' patch
+	for [Bug 1359094]. This moves the retrieval of the next channel state
+	to the end of the loop, as the called closeproc may close other
+	channels, i.e. modify the list we are iterating, invalidating any
+	pointer retrieved earlier.
+
+2005-11-18  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclListObj.c:	Restored the SetListFromAny routine to the
+	* generic/tclObj.c:	"list" Tcl_ObjType, and restored the
+	Tcl_RegisterObjType() call for "list". This addresses the needs of some
+	"bridge" extensions to examine whether the Tcl_ObjType of a Tcl_Obj is
+	that of the "list" Tcl_ObjType.
+
+2005-11-18  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* library/http/http.tcl (http::geturl): Improved syntactic validation
+	of URLs, and better error messages in some cases. [Bug 1358369]
+
+2005-11-17  Miguel Sofer  <msofer@users.sf.net>
+
+	* tests/namespace.test: fix comment
+
+2005-11-14  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclStrToD.c:	More data in the "can't happen" Tcl_Panic to
+	aid debugging.
+
+	* generic/tclBasic.c (CallCommandTraces): Save/restore the interp
+	result during traces to fix [Bug 1355342].
+
+2005-11-13  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclInt.h:
+	* generic/tclNamesp.c:
+	* tests/namespace.test: fix for [Bug 1354540] and [Bug 1355942]. The
+	new tests 7.3-6 and the modified 51.13 fail due to the unrelated [Bug
+	1355342]
+
+	* tests/trace.test: added tests 20.13-16 for [Bug 1355342]
+
+2005-11-12  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_DeleteCommandFromToken):
+	* generic/tclObj.c (Tcl_GetCommandFromObj): more partial fixes for
+	[Bug 1354540] - making sure that cached references to a command being
+	deleted cannot be made reusable by a delete trace.
+
+2005-11-12  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclNamesp.c (Tcl_FindCommand): Do not find commands in dead
+	namespaces on the path. Partial fix for [Bug 1354540].
+
+2005-11-11  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:	Revised TclParseNumber interface to enable
+	* generic/tclScan.c:	revision to the [scan] command implementation
+	* generic/tclStrToD.c:	to permit tests scan-4.44,55 to pass again.
+	[Bug 1348067].
+
+2005-11-11  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_DeleteCommandFromToken):
+	* generic/tclObj.c (Tcl_GetCommandFromObj): bump the cmd epoch early
+	to insure that cached references to this command are invalidated.
+	Partial fix for [Bug 1352734] - at least insures that namespace-51.13
+	does not cause a panic. The test is still marked as knownbug, pending
+	resolution of what is actually the correct return value ([Bug
+	1354540])
+
+2005-11-09  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclTimer.c: Changed [after] so that it behaves correctly
+	* tests/timer.test:   with negative arguments [Bug 1350293] and
+	arguments that overflow a 32-bit word. [Bug 1350291]
+
+2005-11-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/compile.test:	Updated tests with changed behavior
+	* tests/execute.test:	due to addition of bignums.
+	* tests/expr-old.test:
+	* tests/expr.test:
+	* tests/parseExpr.test:
+	* tests/platform.test:
+	* tests/string.test:
+
+2005-11-08  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixFCmd.c (MAX_READDIR_UNLINK_THRESHOLD): reduce to 130
+	based on errors seen on OS X 10.3 with lots of links in a dir.
+	[Bug 1034337 followup]
+
+2005-11-09  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* unix/Makefile.in (gdb-test): Added a new target to make it easier to
+	run the test suite inside a debugger.
+
+2005-11-08  Don Porter  <dgp@users.sourceforge.net>
+
+	* tests/compExpr-old.test:	Updated tests with changed behavior due
+	to addition of bignums.
+
+	* tests/expr.test:      Portable tests expr-46.13-18 [Bug 1341368]
+
+	* generic/tclPkg.c:	Corrected inconsistencies in the value returned
+	* tests/pkg.test:	by Tcl_PkgRequire(Ex) so that the returned
+	values will always agree with what is stored in the package database.
+	This way repeated calls to Tcl_PkgRequire(Ex) have the same results.
+	Thanks to Hemang Lavana. [Bug 1162286].
+
+2005-11-08  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclTrace.c (TraceVarEx): Factor out heart of Tcl_TraceVar2
+	(TclTraceVariableObjCmd,TraceVarProc): Use the new internal API to
+	arrange for the clientData to be cleaned up at the same time as the
+	rest of the main trace record. This simplifies the code a bit at the
+	same time.
+
+2005-11-07  Miguel Sofer  <msofer@users.sf.net>
+
+	* tests/trace.test (trace-13.2-4): added tests to detect leak, see [Bug
+	1348775]. The recently added trace-8.9 test is now 13.4.
+
+2005-11-07  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* tests/dict.test (dict-19.2): arrange for the stress testing code to
+	only stress test the dict code and not the trace code as well. [Bug
+	1342858]
+
+2005-11-05  Miguel Sofer  <msofer@users.sf.net>
+
+	* tests/trace.test (trace-8.9): added test to detect leak, see [Bug
+	1348775].
+
+2005-11-04  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* win/tclWinPort.h:  Applied [Patch 1267871] by Matt Newman for
+	* win/tclWinPipe.c:  extended error code support on Windows.
+	* tests/exec.test:   Tests for extended error codes.
+	* generic/tclPipe.c: Permit long codes (platform macros permitting).
+
+2005-11-04  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclBinary.c:
+	* generic/tclCmdAH.c:
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclDictObj.c:
+	* generic/tclExecute.c:
+	* generic/tclIOCmd.c:
+	* generic/tclLink.c:
+	* generic/tclTest.c:
+	* generic/tclVar.c: fix for [Bug 1334947]. The functions TclPtrSetVar,
+	Tcl_ObjSetVar2 and Tcl_SetVar2Ex now always consume the newValuePtr
+	argument - i.e., they will free a 0-refCount object if they failed to
+	set the variable. Fixed all callers in the core.
+
+2005-11-04  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclGetDate.y: Added abbreviations for the Korean
+	* library/clock.tcl:    timezone. [Patch 1298737]
+	* generic/tclDate.c:    Regenerated.
+
+	* tools/findBadExternals.tcl: Added this script, which locates external
+	symbols that do not begin with 'Tcl' or 'tcl' and hence might be in
+	conflict with other link libraries. Thanks to George Peter Staplin for
+	the idea and the initial version of the script. [Bug 1263012]
+
+	* unix/Makefile.in: Trimmed a bunch of fat out of the tommath/
+	directory in 'make dist'. [RFE 1333318]
+
+	* unix/tcl.m4: Added code to enable [load] on LynxOS. Thanks to
+	heidibr@users.sf.net for the patch. [Bug 1163896]. Removed the last
+	vestiges of GNU dld from the Unix build [RFE 1071992].
+
+	* unix/tclLoadDld.c: Removed.
+	* unix/configure: Regenerated.
+
+2005-11-04  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclInt.h:
+	* generic/tclNamesp.c:
+	* generic/tclVar.c:
+	* tests/trace.test: fix for [Bugs 1338280/1337229]; changed to use the
+	same approach as the 8.4 patch in the ticket (i.e., removed the patch
+	committed on 2005-31-10).
+
+2005-11-03  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* win/tclWin32Dll.c:   Applied [Patch 1256872] to provide unicode
+	* win/tclWinConsole.c: support in the console on suitable systems.
+	* win/tclWinInt.h:     Patch by Anton Kovalenko
+
+2005-11-02  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	Applied [Patch 1096916] to support building with MSVC 8.
+	* generic/regerror.c: Avoid use of reserved word.
+	* generic/tcl.h:      Select the right Tcl_Stat structure
+	* generic/tclDate.c:  Casts to handle 64 bit time_t case.
+	* tests/env.test:     Include essential envvar on Win32
+	* win/nmakehlp.c:     Handle new return codes.
+	* win/makefile.vc:    Use the selected options.
+	* win/rules.vc:       Check options are applicable
+	* win/tclWinPort.h:   Disable deprecated function warnings
+	* win/tclWinSock.c:   Provide default value to avoid warning.
+	* win/tclWinTime.c:   Add casts to handle 64bit time_t type.
+
+2005-11-01  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclTrace.c (TclCheckExecutionTraces): Corrected mistaken
+	assumption that all command traces are set at the script level.
+	Report/fix from Jacques H. de Villiers. [Bug 1337941]
+
+	* tests/unixNotfy.test (1.1,2):	Update error message whitespace to
+	match changes in code.
+
+	* tests/expr-old.test (expr-32.52): Use int(.) to restrict result of
+	left shift to the C long range.
+
+	* expr.test (expr-46.13): Added test that illustrates shortcoming of
+	[Patch 1340260].
+
+2005-10-31  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclNamesp.c: fix for [Bugs 1338280/1337229]. Thanks Don.
+	* tests/trace.test: fix duplicate test numbers
+
+2005-10-31  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* win/tclWinSerial.c (SerialSetOptionProc): Cleaned up option parsing
+	to produce more informative error messages and separate error and
+	non-error code paths better.
+	* tests/ioCmd.test (iocmd-8-19): Updated.
+
+2005-10-29  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclTrace.c (TraceVarProc): [Bug 1337229], partial fix. Ensure
+	that a second call with TCL_TRACE_DESTROYED does not lead to a second
+	call to Tcl_EventuallyFree(). It is still true that that second call
+	should not happen, so the bug is not completely fixed.
+	* tests/trace.test (test-18.3-4): added tests for [Bug 1337229] and
+	[Bug 1338280].
+
+2005-10-23  Vince Darley  <vincentdarley@sourceforge.net>
+
+	* generic/tclFileName.c: fix to memory leak in glob [Bug 1335006] Obj
+	leak detection and patch by Eric Melbardis.
+
+	* tests/fCmd.test:
+	* win/tclWinFile.c: where appropriate windows API is available, try to
+	set 'nlink' and 'ino' stat fields (previously they were always 0). [Bug
+	1325803]
+
+2005-10-22  Miguel Sofer  <msofer@users.sf.net>
+
+	* tests/foreach.test (foreach-8.1): added test for [Bug 1189274]
+
+2005-10-22  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_INCR_*): fixed [Bug 1334570]. Obj leak
+	detection and patch by Eric Melbardis.
+
+2005-10-21  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclStrToD.c (RefineApproximation): Plugged a memory leak
+	where two intermediate results were not freed on one return path. [Bug
+	1334461]. Thanks to Eric Melbardis for the patch.
+
+2005-10-21  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/binary.n: Clarify that virtually all code that uses the 'h'
+	format in [binary scan] should be using the 'H' format instead. It is
+	nearly always a bug to use the other!
+
+2005-10-20  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclListObj.c (TclLsetFlat):
+	* tests/lset.test (lset-10.3): fixed handling of unshared lists with
+	shared sublists, [Bug 1333036] reported by neuronstorm.
+
+2005-10-19  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclIORChan.c (PassReceivedError,PassReceivedErrorInterp):
+	Fix crash caused by passing -1 as the length to TclNewStringObj(). Only
+	Tcl_NewStringObj (the function call, not the macro) handles that sort
+	of thing correctly. This makes ioCmd.test pass again.
+
+2005-10-19  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclClock.c:		Removed some dead code.
+	* generic/tclCmdIL.c:
+	* generic/tclCompCmds.c:
+	* generic/tclDictObj.c:
+	* generic/tclExecute.c:
+	* generic/tclLiteral.c:
+	* generic/tclParseExpr.c:
+	* generic/tclScan.c:
+	* generic/tclUtil.c:
+	* generic/tclVar.c:
+
+2005-10-19  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclIORChan.c: General cleanup, removing checks that are
+	unnecessary due to the general contracts of other functions in the
+	core, converting to using ANSI declarations, etc. Note that nearly the
+	whole file has changed, but it is often just cosmetic.
+
+2005-10-19  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_DICT_APPEND, INST_DICT_LAPPEND): fixed
+	faulty peephole optimisation that can cause crashes, [Bug 1331475]
+	reported by Aric Bills.
+
+2005-10-18  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c: Added optimization for I32L64 systems to avoid
+	using bignums to perform int multiplies. The improvement shows up most
+	dramatically in tclbench's matrix.bench.
+
+2005-10-15  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c:	Restored some optimizations of the
+	INST_INCR_SCALAR1_IMM opcode.
+
+2005-10-14  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_ClearChannelHandlers): removed change dated
+	2005-10-04 (see below). Look into [Bug 1323992] for detailed
+	discussion.
+
+	* generic/tcl.h: Fixed bad definition of CRTEXPORT which should have
+	been CRTIMPORT rather. This broke compilation of generic/tclMain.c and
+	was probably introduced by mistake while applying the fix for [Bug
+	1256937] below.
+
+2005-10-14  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclExecute.c (TclIncrObj, TclExecuteByteCode): Tidied up a
+	couple of infelicitous do {...} while(0) constructs.
+
+2005-10-14  Pat Thoyts  <patthoyts@users.sourceforge.net>
+
+	* generic/tcl.h:     Fix for [Bug 1256937] - correctly decorate
+	* generic/tclMain.c: imported functions from msvcrt in static builds.
+
+2005-10-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/format.test: "Forward"-port of test updates relating to [Bug
+	1284178]. The bug itself was fixed by TIP#237.
+
+2005-10-13  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_ClearChannelHandlers): temporary ifdef
+	TCL_THREADS changes done to de-activate pending event processing when
+	channel is being closed/cutted.
+
+2005-10-13  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c:	Removed obsolete use of NO_ERRNO_H.
+	* tools/man2tcl.c:
+	* unix/tcl.m4:
+	* unix/tclConfig.h.in:
+	* win/configure.in:
+
+	* unix/configure:	autoconf-2.59
+	* win/configure:
+
+	* compat/tclErrno.h:	Removed obsolete file.
+
+	* generic/tclStrToD.c (TclParseNumber): Missing goto caused crash when
+	parsing "Na". [Bug 1325833]
+
+2005-10-12  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c (GetNumberFromObj):	Restored some lost
+	optimizations for empty string values. We avoid cost of a call to
+	TclParseNumber just to tell us an empty string isn't a number.
+
+2005-10-12  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclPathObj.c (SetFsPathFromAny): TclGetString macro must not
+	be combined with post-increment arguments. [Bug 1325099]
+
+2005-10-12  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclExecute.c (Tcl_ExecuteByteCode, TclIncrObj): Several
+	common cases inlined in hopes of gaining a little performance in [incr]
+
+2005-10-10  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclCompCmds.c: New convenience macro CompileTokens().
+
+2005-10-10  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c: Corrections to the NO_WIDE_TYPE build. Also
+	added missing "break" to a switch that broke wide XOR operations.
+
+2005-10-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInterp.c (DeleteScriptLimitCallback)
+	(SetScriptLimitCallback): Improve the interlocking between the script
+	limit callback record and the hash table of current such records, to
+	prevent crashes in callbacks that create callbacks.
+	(Tcl_LimitSetTime): Reset the correct flag. Problem reported by
+	Nicolas Castagne <castagne@imag.fr> on comp.lang.tcl
+
+2005-10-10  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: Fixing errors in last commit. (Two commits, the
+	second removes wrong comment).
+
+2005-10-09  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclBasic.c:
+	* generic/tclExecute.c:
+	* generic/tclStrToD.c:
+	* generic/tclStringObj.c: Initialise variables to avoid compiler
+	warnings ([Bug 1320818] among others).
+
+2005-10-08  Don Porter  <dgp@users.sourceforge.net>
+
+	TIP#237 IMPLEMENTATION
+
+	[kennykb-numerics-branch] Resynchronized with the HEAD; at this
+	checkpoint [-rkennykb-numerics-branch-20051008], the HEAD and
+	kennykb-numerics-branch contain identical code.
+
+	[kennykb-numerics-branch]	Merge updates from HEAD
+
+	* generic/tclExecute.c: More performance macros and special handling of
+	the wide integer type for performance on 32-bit systems.
+
+2005-10-07  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c:	Macro GetNumberFromObj() is version of
+	TclGetNumberFromObj() that saves a function call for common uses.
+
+	* generic/tclInt.h:	Made #undef NO_WIDE_TYPE the default on 32-bit
+	systems. Being able to use 64-bit values without leaping to mp_int
+	should help with performance.
+
+	* generic/tclObj.c:	Bug fixes in the #undef NO_WIDE_TYPE
+	* generic/tclExecute.c:	configuration.
+
+	* generic/tclExecute.c: Improved performance of comparison opcodes and
+	bitwise operations and removed yet more dead code.
+
+2005-10-07  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* unix/tclUnixFCmd.c (TraverseUnixTree): Adjust 2004-11-11 change to
+	* tests/fCmd.test (fCmd-20.2):           account for NFS special files
+	with a readdir rewind threshold. [Bug 1034337]
+
+2005-10-06  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c:	Improved performance of INST_RSHIFT and
+	INST_LSHIFT.
+
+2005-10-05  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c: Improved performance of INST_MULT, INST_DIV,
+	INST_ADD, and INST_SUB and replaced a "goto... label" with a "break
+	from loop" in TclIncrObj() and removed some dead code.
+
+2005-10-05  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclPipe.c (TclCreatePipeline): Fixed [Bug 1109294]. Applied
+	the patch provided by David Gravereaux.
+
+	* doc/CrtChannel.3: Fixed [Bug 1104682], by application of David
+	Welton's patch for it, and added a note about wideSeekProc.
+
+	* generic/tclIORChan.c (RcClose): Removed unreachable panic/return
+	statements. This fixes the remainder of [Bug 1286256].
+
+2005-10-05  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* tests/env.test (env-6.1):
+	* win/tclWinPort.h: define USE_PUTENV_FOR_UNSET 1
+	* generic/tclEnv.c (TclSetEnv, TclUnsetEnv): add USE_PUTENV_FOR_UNSET
+	to existing USE_PUTENV define to account for various systems that have
+	putenv(), but can't unset env vars with it. Note difference between
+	Windows and Linux for actually unsetting the env var (use of '=').
+	Correct the resizing of the environ array. We assume that we are in
+	full ownership, but that's not correct.[Bug 979640]
+
+2005-10-04  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+	* generic/tclExecute.c: Updated TclIncrObj() to more efficiently add
+	native long integers. Also updated IllegalExprOperandType and the
+	INST_UMINUS, INST_UPLUS, INST_BITNOT, and INST_TRY_CVT_TO_NUMERIC
+	sections for performance.
+
+	* generic/tclBasic.c: Updated more callers to make use of
+	TclGetNumberFromObj. Removed some dead code.
+
+2005-10-04  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* win/tclWinSerial.c (SerialSetOptionProc): free argv [Bug 1067708]
+
+	* tests/http.test:              do not URI encode -._~ according
+	* library/http/http.tcl (init): to RFC3986. [Bug 1182373] (aho)
+
+	* unix/tclLoadShl.c (TclpDlopen): use DYNAMIC_PATH on second shl_load
+	only. [Bug 1204237]
+
+	* doc/scan.n: scan %[] requires "one or more chars" [Bug 1277503]
+
+	* tests/winFile.test (getuser): allow valid Windows usernames. [Bug
+	1311285]
+
+	* generic/tclParse.c (Tcl_ParseCommand): add code that recognizes {} in
+	addition to {expand} for word expansion (make with
+	-DALLOW_EMPTY_EXPAND).
+
+2005-10-04  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
+
+	* generic/tclIO.c (Tcl_ClearChannelHandlers): now deletes any
+	outstanding timer for the channel. Also, prevents events still in the
+	event queue from triggering on the current channel.
+
+	* generic/tclTimer.c (Tcl_DeleteTimerHandler): bail out early if passed
+	NULL argument.
+
+2005-10-03  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclBasic.c:	Re-implemented ExprRoundFunc and
+	ExprEntierFunc to use TclGetNumberFromObj.
+
+	* generic/tclInt.h:	Added new routine TclGetNumberFromObj to
+	* generic/tclObj.c:	provide efficient access to the actual
+	internal rep of a numeric Tcl_Obj without conversions.
+
+2005-10-03  Kevin Kenny  <kennykb@acm.org>
+
+	* tools/loadICU.tcl:  Changed the file names of message catalogs to
+			      lowercase.
+	* tools/makeTestCases.tcl:
+	* library/tzdata/*:   Olson's tzdata2005n.tar.gz. Includes new DST
+	rules for USA and a number of changes to other locales.
+	* tests/clock.test:   Regenerated for new US DST rules.
+
+2005-09-30  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclMain.c: Separate encoding conversion of command line
+	arguments from list formatting. [Bug 1306162].
+
+2005-09-30  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclStringObj.c:	Bug fix: Missing cast to large enough
+	integral size before << operations led to broken [format %llx] results.
+	Thanks to Robert Henry for reporting the bug.
+
+2005-09-29  Jeff Hobbs  <jeffh@ActiveState.com>
+
+	* doc/mathfunc.n:   implementation for TIP #255, expr min/max
+	* library/init.tcl:
+	* tests/info.test, tests/expr-old.test:
+
+2005-09-27  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tcl.h:	Changed name of the new Tcl_Obj intrep field
+	* generic/tclObj.c:	from "bignumValue" to "ptrAndLongRep" as
+	* generic/tclProc.c:	described in TIP 237, and more suitable for
+	other more general uses.
+
+2005-09-27  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* tests/binary.test (binary-14.18): Added test for [Bug 1116542] though
+	the bug itself was already fixed by unrelated changes.
+
+2005-09-26  Kevin Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Merge updates from HEAD.
+
+2005-09-26  Kevin Kenny  <kennykb@acm.org>
+
+	* libtommath/:                   Updated to release 0.36.
+	* generic/tommath.h:             Regenerated.
+	* generic/tclTomMathInterface.h: Added ten missing aliases for mp_*
+	functions to avoid namespace pollution in Tcl's exported symbols. [Bug
+	1263012]
+
+2005-09-23  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* unix/Makefile.in:	Added -DMP_PREC=4 switch to all compiles so
+	* win/Makefile.in:	that minimum memory requirements of mp_int's
+	* win/makefile.vc:	will not be quite so large. [Bug 1299153].
+
+	* generic/tclStrToD.c:	Fixed memory leak. [Bug 1299803].
+	* generic/tclObj.c:
+
+2005-09-20  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c:	Revise TclIncrObj() to call
+	Tcl_GetBignumAndClearObj.
+
+	* generic/tcl.decls:	Add Tcl_GetBignumAndClearObj.
+	* generic/tclObj.c:
+
+	* generic/tclDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+2005-09-16  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclInt.h:		 Added TclBNInitBigNumFromWideInt() so
+	* generic/tclTomMathInterface.c: that every caller isn't required to
+	duplicate the sign logic to use the unsigned interface.
+
+	* generic/tclBasic.c:	Reduce the number of places where Tcl intrudes
+	* generic/tclExecute.c:	into the internal format details of the mp_int
+	* generic/tclObj.c:	struct.
+	* generic/tclStrToD.c:
+	* generic/tcLStringObj.c:
+
+	* generic/tclTomMath.h:	Added mp_cmp_d to routines from libtommath
+	* unix/Makefile.in:	used by Tcl.
+	* win/Makefile.in:
+	* win/makefile.vc:
+
+	* libtommath/bn_mp_add_d.c: Bug fix. For mp_add_d(&a, d, &c), when &a
+	has the value -d, then the value &c computed should be zero, but
+	mp_add_d was producing an inconsistent zero value with a sign field of
+	MP_NEG, something like a value of -0, which other routines in
+	libtommath can't handle.
+
+	* generic/tclExecute.c:	Dropped all creation of "bigOne" values and
+	just use tommath routines that accept the value "1" directly.
+
+2005-09-15  Miguel Sofer  <msofer@users.sf.net>
+
+	* doc/ParseCmd.3: copy/paste fix [Bug 1292427]
+
+2005-09-15  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]	Merge updates from HEAD.
+
+	* generic/tclStringObj.c (TclAppendFormattedObjs):	Revision to
+	eliminate one round of string copying.
+
+	* generic/tclBasic.c:	More callers of TclObjPrintf and
+	* generic/tclCkalloc.c:	TclFormatToErrorInfo.
+	* generic/tclCmdMZ.c:
+	* generic/tclExecute.c:
+	* generic/tclIORChan.c:
+	* generic/tclMain.c:
+	* generic/tclProc.c:
+	* generic/tclTimer.c:
+	* generic/tclUtil.c:
+	* unix/tclUnixFCmd.c
+
+	* unix/configure:	autoconf-2.59
+
+2005-09-15  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tcl.m4 (SC_TCL_EARLY_FLAGS): Added extra hack to allow Tcl to
+	transparently open large files on RHEL 3. [Bug 1287638]
+
+2005-09-14  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclStringObj.c:	Bug fixes: ObjPrintfVA needed to
+	support "*" fields and needed to interpret precision limits on %s
+	conversions as a maximum number of bytes, not Tcl_UniChars, to take
+	from the (char *) argument.
+
+	* generic/tclBasic.c:	Updated several callers to use
+	* generic/tclCkalloc.c: TclFormatToErrorInfo() and/or
+	* generic/tclCmdAH.c:	TclObjPrintf().
+	* generic/tclCmdIL.c:
+	* generic/tclCmdMZ.c:
+	* generic/tclDictObj.c:
+	* generic/tclExecute.c:
+	* generic/tclIORChan.c:
+	* generic/tclIOUtil.c:
+	* generic/tclNamesp.c:
+	* generic/tclProc.c:
+
+	* library/init.tcl:	Keep [unknown] in sync with errorInfo
+	formatting rules.
+
+2005-09-13  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	First caller of TclFormatToErrorInfo.
+
+	* generic/tclInt.h:		Using stdarg.h conventions, add more
+	* generic/tclStringObj.c:	fixed arguments to TclFormatObj() and
+	TclObjPrintf(). Added new routine TclFormatToErrorInfo().
+
+	* generic/tcl.h:	Explicitly standardized on the use of stdarg.h
+	* generic/tclBasic.c:	conventions for functions with variable number
+	* generic/tclInt.h:	of arguments. Support for varargs.h has been
+	* generic/tclPanic.c:	implicitly gone for some time now. All
+	* generic/tclResult.c:	TCL_VARARGS* macros purged from Tcl sources,
+	* generic/tclStringObj.c:	leaving only some deprecated #define's
+	* tools/genStubs.tcl:	in tcl.h for the sake of older extensions.
+
+	* generic/tclDecls.h:	make genstubs
+
+	* doc/AddErrInfo.3:	Replaced all documented requirement for use of
+	* doc/Eval.3:		TCL_VARARGS_START() with requirement for use of
+	* doc/Panic.3:		va_start().
+	* doc/SetResult.3:
+	* doc/StringObj.3:
+
+2005-09-12  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]	Merge updates from HEAD.
+
+	* generic/tclCmdAH.c:		Added support for the "ll" width
+	* generic/tclStringObj.c:	specifier to [format].
+
+	* generic/tclStringObj.c (TclAppendFormattedObjs):	Bug fix: make
+	sure %ld formats force the collection of a wide value, when the value
+	could be a different long.
+
+2005-09-09  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIORChan.c (RcDecodeEventMask): Added missing type
+	declaration for the parameter 'mask'. This fixes the [Bug 1286256]. The
+	other warning can be removed only by removing the panic/return code.
+
+2005-09-09  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]	Merge updates from HEAD.
+
+2005-09-09  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclStringObj.c:  Added two missing casts to silence messages
+	from MSVC6.
+
+2005-09-09  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:		New internal routine TclObjPrintf()
+	* generic/tclStringObj.c:	is similar to TclFormatObj() but
+	accepts arguments in non-Tcl_Obj format.
+
+	* generic/tclInt.h:		New internal routines TclFormatObj()
+	* generic/tclStringObj.c:	and TclAppendFormattedObjs() to offer
+	sprintf()-like means to append to Tcl_Obj. Work in progress toward
+	[RFE 572392].
+
+	* generic/tclCmdAH.c:	Compiler directive NEW_FORMAT when #define'd
+	directs the [format] command to be implemented in terms of the new
+	TclAppendFormattedObjs() routine.
+
+2005-09-08  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	TIP#254 IMPLEMENTATION
+
+	* generic/tclLink.c (LinkTraceProc,ObjValue): Added many new of C var
+	* generic/tcl.h:			      to link to, making it
+	* doc/LinkVar.3:			      easier to seamlessly
+	* generic/tclTest.c (TestlinkCmd):	      couple C code and Tcl
+	* tests/link.test:			      scripts in an
+	application. [Patch 1242844]
+
+2005-09-07  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclUtf.c (Tcl_UniCharToUtf):	Corrected handling of negative
+	* tests/utf.test (utf-1.5):	    Tcl_UniChar input value. Incorrect
+	handling was producing byte sequences outside of Tcl's legal internal
+	encoding. [Bug 1283976].
+
+2005-09-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInt.h (List): Added flag to keep track of whether a list
+	* generic/tclListObj.c:    with a string rep is provably canonical.
+	* generic/tclUtil.c (Tcl_ConcatObj):  Do efficient concatenation and
+	* generic/tclBasic.c (Tcl_EvalObjEx): evaluation when the list is
+	canonical, and not just when the list is pure. This should make the
+	"pure list" hacking introduced in 8.3 much more robust.
+
+2005-09-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclObj.c (pendingObjDataKey): Added missing 'static' to stop
+	symbol from leaking outside the Tcl library. [Bug 1263012]
+
+2005-09-02  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclScan.c:	Bug fix: The %o, %x, %i formats of [scan] must
+	not accept any 0b or 0o prefixes. [scan $s %o] must continue to work
+	even with KILL_OCTAL enabled.
+
+	* generic/tclInt.h:	Added TCL_PARSE_SCAN_PREFIXES to the flags
+	* generic/tclStrToD.c:	accepted by TclParseNumber.
+
+2005-09-01  Andreas Kupries  <andreask@activestate.com>
+
+	* unix/tclUnixSock.c (InitializeHostName): Synchronized use of static
+	modifier in declaration and definition of function.
+
+	* unix/tclUnixChan.c (FileTruncateProc): Synchronized use of static
+	modifier in declaration and definition of function.
+
+	* generic/tclResult.c (ReleaseKeys): Synchronized use of static
+	modifier in declaration and definition of function.
+
+	* generic/tclListObj.c (NewListIntRep): Synchronized use of static
+	modifier in declaration and definition of function.
+
+	* generic/tclEncoding.c (InitializeEncodingSearchPath): Synchronized
+	use of static modifier in declaration and definition of function.
+
+	* generic/tclEncoding.c (FillEncodingFileMap): Synchronized use of
+	static modifier in declaration and definition of function.
+
+	* generic/tclIORChan.c (RcNewHandle): Synchronized use of static
+	modifier in declaration and definition of function.
+
+2005-09-01  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclObj.c:	TclParseNumber calls meant to parse an integer
+	value now pass the TCL_PARSE_INTEGER_ONLY flag.
+
+	* generic/tclScan.c:	Extended [scan] to accept the %lld, %llo, %llx,
+	and %lli formats. Numeric scanning is now done via TclParseNumber calls
+
+	* generic/tclInt.h:	Extended TclParseNumber to accept new flag
+	* generic/tclStrToD.c:	values TCL_PARSE_INTEGER_ONLY,
+	TCL_PARSE_OCTAL_ONLY, and TCL_PARSE_HEXIDECIMAL_ONLY, to give caller
+	more control over the parsing rules.
+
+2005-08-31  Vince Darley  <vincentdarley@sourceforge.net>
+
+	* doc/FileSystem.3:
+	* unix/tclUnixFile.c:
+	* windows/tclWinFile.c: clarify that Tcl_FSMatchInDirectory may be
+	called with a NULL interpreter, and fix the code so this is allowed.
+	Tcl's core itself (tclEncoding.c:FillEncodingFileMap()) calls this
+	with a NULL interpreter.
+
+2005-08-30  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclObj.c:	Extended bignum support to include bignums so
+	large they will not pack into a Tcl_Obj. When they outgrow Tcl's string
+	rep length limits, a panic will result.
+
+	* generic/tclTomMath.h:	Added mp_sqrt to routines from
+	* unix/Makefile.in:	libtommath used by Tcl.
+	* win/Makefile.in:
+	* win/makefile.vc:
+
+	* generic/tclBasic.c:	Extended sqrt(.) so that range covers the
+	entire double range, accepting as many bignums in the domain as that
+	will allow.
+
+2005-08-29  Andreas Kupries  <andreask@activestate.com>
+
+	* library/tm.tcl (::tcl::tm::roots): Accepted Don Porter's patch for
+	[Bug 1189657]. Syncs the implementation to the specification (TIP #189)
+
+2005-08-29  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]	Merge updates from HEAD.
+
+	* generic/tclBasic.c:	Restored round(.) to the Tcl 8.4 rules.
+
+2005-08-29  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclBasic.c (ExprMathFunc): Restored "round away from zero"
+	* tests/expr.test (expr-46.*):       behaviour to the "round" function.
+	Added test cases for the behavior, including the awkward case of a
+	number whose fractional part is 1/2-1/2ulp. [Bug 1275043]
+
+2005-08-26  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c: Moved Tcl_{Cut,Splice}Channel to
+	{Cut,Splice}Channel for internal use, and created new public functions
+	for Tcl_{Cut,Splice}Channel which walk the whole stack of
+	transformations and invoke the necessary thread actions. Added code to
+	Tcl_(Un)StackChannel to properly invoke the thread actions when pushing
+	and popping transformations on/from a channel.
+
+2005-08-26  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclNamesp.c (NamespaceEnsembleCmd): Reset the result after
+	creating an ensemble to clear any result object sharing (potentially
+	caused by delete traces) so that we can safely return the name of the
+	ensemble. Previously, this caused crashes in Snit's test suite.
+
+2005-08-25  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclListObj.c (UpdateStringOfList): Stop uncontrolled and
+	unsafe crashes from happening when working with very large string
+	representations. [Bug 1267380]
+
+	* generic/tclExecute.c (TEBC:INST_DICT_LAPPEND): Stop dropping a
+	duplicated object on the floor, which was a memory leak (and a wrong
+	result too). Thanks to Andreas Kupries for reporting this.
+
+2005-08-25  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch] Merge updates from HEAD
+
+	* generic/tclExecute.c: Bug fix. INST_RSHIFT: shift of negative values
+	produced incorrect results.
+
+	* generic/tclExecute.c: Bug fix. INST_*SHIFT opcodes stack management.
+	[expr 0<<6] should be 0, not 6.
+
+	* generic/tclBasic.c: Extended the domain of round(.) to all non-Inf,
+	non-NaN doubles, using bignums for the result as needed.
+
+2005-08-24  Andreas Kupries  <andreask@activestate.com>
+
+	TIP#219 IMPLEMENTATION
+
+	* doc/SetChanErr.3: ** New File **. Documentation of the new channel
+	API functions.
+	* generic/tcl.decls:  Stub declarations of the new channel API.
+	* generic/tclDecls.h: Regenerated
+	* generic/tclStubInit.c:
+
+	* tclIORChan.c: ** New File **. Implementation of the reflected
+	channel.
+	* generic/tclInt.h: Integration of reflected channel and new error
+	* generic/tclIO.c:  propagation into the generic I/O core.
+	* generic/tclIOCmd.c:
+	* generic/tclIO.h:
+	* library/init.tcl:
+
+	* tests/io.test:    Extended testsuite.
+	* tests/ioCmd.test:
+	* tests/chan.test:
+	* generic/tclTest.c:
+	* generic/tclThreadTest.c:
+
+	* unix/Makefile.in: Integration into the build machinery.
+	* win/Makefile.in:
+	* win/Makefile.vc:
+
+2005-08-24  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclStrToD.c (Tcl_DoubleDigits): Fixed the corner cases of
+	* tests/binary.test (binary-65.*)         formatting floating point
+	numbers with the largest and smallest possible significands, and added
+	test cases for them.
+
+2005-08-24  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c: Corrected some TRACE bugs that prevented
+	compilation with --enable-symbols=all.
+	* generic/tclStrToD.c: Revised commentary to prepare for a renaming of
+	the file, removed some dead code, and fixed a bug where
+	TclBignumToDouble failed on huge negative numbers.
+	* tests/binary.test (binary-65.*): Added missing 'ieeeFloatingPoint'
+	to large/small significand tests.
+	* tests/expr.test (expr-45.*) Added missing braces around expressions.
+
+2005-08-24  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclBasic.c:	Revised implementation of the ceil(.) and
+	* generic/tclInt.h:	floor(.) math functions in light of the
+	* generic/tclStrToD.c:	revised comparison operators, so that it is
+	always true that ($x <= ceil($x)) and ($x >= floor($x)). The simple
+	approach of "convert to double and call ceil() or floor()" could not
+	guarantee that.
+
+	* generic/tclExecute.c:	Bug fix: TclBignumToDouble return -Inf when
+	appropriate. Removed declarations of removed routines.
+
+	* generic/tclExecute.c: Revised the type promotion rules of the
+	comparison operators so that they form proper equivalence classes over
+	the set of numeric strings.
+
+2005-08-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure.in:
+	* win/configure: Regen.
+	* win/configure.in: Update minimum autoconf version to 2.59.
+
+2005-08-23  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
+	* generic/tclInt.h:
+	* generic/tclObj.c (Tcl_GetBooleanFromObj, SetDoubleFromAny,
+	Tcl_GetLongFromObj, Tcl_GetWideIntFromObj, Tcl_GetBignumFromObj):
+	* generic/tclParseExpr.c (GetLexeme):
+	* generic/tclScan.c (Tcl_ScanObjCmd):
+	* generic/tclStrToD.c (TclParseNumber):
+	* tests/binary.test (binary-62.1-65.7):
+	* tests/expr.test (expr-40.1-42.1):
+	* scan.test (scan-14.1,14.2):
+	Modified Tcl_ParseNumber to accept an argument to force interpretation
+	as decimal, and modified [scan] to use it. Corrected a bug where Not a
+	Number with hexadecimal information bits returned consistently
+	incorrect values. #ifdef-ed out some code that is needed only for IBM
+	hexadecimal floating point. Fixed bugs in code to handle the corner
+	cases of smallest and largest significands. Added test cases to improve
+	test coverage in generic/tclStrToD.c. Added test cases for 0b notation
+	(TIP #114). Removed TclStrToD, and the static functions that it calls,
+	which are now dead code (TclParseNumber now does all input
+	floating-point conversions.)
+
+2005-08-23  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclStrToD.c:	Bug fix: set shift magnitude properly whether
+	we're expanding to mp_int type or not.
+
+	* generic/tclExecute.c:	Bug fix: ACCEPT_NAN under INST_UMINUS.
+
+	* generic/tclStrToD.c:	New macros TIP_114_FORMATS and KILL_OCTAL to
+	configure acceptance of 0o and 0b numbers and rejection of "leading
+	zero as octal".
+
+	* generic/tclBasic.c:	Re-used the guts of int(.) and wide(.) math
+	functions to perform conversions in OldMathFuncProc.
+
+	* generic/tclBasic.c:	Support for ACCEPT_NAN.
+	* generic/tclExecute.c:
+
+	* generic/tclInt.decls:	Restored TclExprFloatError to internal stubs
+	* generic/tclBasic.c:	table, and moved definition back to
+	* generic/tclExecute.c:	tclExecute.c from tclBasic.c to handle #undef
+	ACCEPT_NAN.
+
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclInt.h:	New internal macros TclIsNaN and TclIsInfinite
+	* generic/tclBasic.c:	replace the IS_NAN and IS_INF macros scattered
+	* generic/tclExecute.c:	here and there.
+	* generic/tclObj.c:
+	* generic/tclStrToD.c:
+	* generic/tclUtil.c:
+
+2005-08-22  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclConfig.h.in: autoheader-2.59.
+
+2005-08-22  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclInt.h:	New ACCEPT_NAN macro to mark code that
+	* generic/tclCmdAH.c:	supports or disables accepting of the NaN
+	* generic/tclExecute.c:	value at various points.
+	* generic/tclLink.c:
+
+	* generic/tclStrToD.c:	Bug fix. Parsing of +/- Infinity was reversed.
+
+	* generic/tclTestObj.c:	Disabled unused [testconvertobj] command.
+
+	* generic/tclBasic:	Added [expr {entier(.)}]. Rewrote int(.) and
+	wide(.) to use the same guts, accepting all non-Inf doubles as
+	arguments.
+
+	* generic/tclInt.h:	New routine TclInitBignumFromDouble.
+	* generic/tclStrToD.c:	Modified to return code and write error
+	message.
+
+	* generic/tclInt.h:	TCL_WIDE_INT_IS_LONG implies NO_WIDE_TYPE.
+	* generic/tclObj.c:	Removed now unnecessary tests of the
+	* generic/tclStrToD.c:	TCL_WIDE_INT_IS_LONG definition.
+
+	* generic/tclInt.h:	New internal routine TclSetBignumIntRep
+	* generic/tclObj.c:	consolidates packing of bignum value into a
+	* generic/tclStrToD.c:	Tcl_Obj within one source code file.
+
+	* tests/expr.test:	Corrected the wideIs64bit constraint.
+	* tests/format.test:
+	* tests/scan.test:
+
+2005-08-21  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclInt.h:		Moved TclParseInteger to tclUtil.c and
+	* generic/tclParseExpr.c:	made it static.
+	* generic/tclUtil.c:
+
+	* generic/tclInt.decls:	Moved TclExprFloatError to tclBasic.c and made
+	* generic/tclBasic.c:	it static.
+	* generic/tclExecute.c:
+
+	* generitc/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclExecute.c:	errno, IS_NAN, IS_INF, LLD no longer called in
+	this file; dropped/disabled support for them.
+
+	* generic/tclCompExpr.c:	errno no longer used in these files;
+	* generic/tclParseExpr.c:	dropped support "hack" for it.
+
+	* generic/tclStrToD.c:	Disabled out of date support "hack" for errno.
+
+	* generic/tclBasic.c:	Eliminated VerifyExprObjType. Initialize errno
+	to zero in OldMathFuncProc.
+
+2005-08-19  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclBasic.c:	Updated OldMathFuncProc and ExprAbsFunc to do
+	less invasion into numeric Tcl_Obj internals. Made ExprDoubleFunc,
+	ExprIntFunc, ExprWideFunc, and ExprRoundFunc bignum-aware. Revised
+	ExprSrandFunc error message.
+
+	* generic/tclProc.c:	Wrapped a few tclWideIntType uses in
+	* generic/tclCmdMZ.c:	#ifndef NO_WIDE_TYPE.
+
+	* generic/tclInt.h:	#define'd NO_WIDE_TYPE.
+
+	* generic/tclVar.c:	Replaced TclPtrIncrVar and TclPtrIncrWideVar
+	* generic/tclInt.h:	with TclPtrIncrObjVar and replaced TclIncrVar2
+	* generic/tclInt.decls:	and TclIncrWideVar2 with TclIncrObjVar2. New
+	routines call on TclIncrObj to do the work.
+
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclCmdIL.c:	Rework Tcl_IncrObjCmd and the INST_*INCR*
+	* generic/tclExecute.c:	opcodes to use the new routines.
+
+2005-08-18  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c:		Fixed string rep invalidation bug in
+	* tests/dict.test (dict-11.17):	INST_DICT_INCR_IMM rewrite.
+
+	* generic/tclDictObj.c:	DictIncrCmd rewrite to use TclIncrObj.
+
+	* generic/tclInt.h:	TclIncrObj static -> internal
+	* generic/tclExecute.c:
+
+2005-08-17  George Peter Staplin  <GeorgePS@XMission.com>
+
+	* generic/tclBasic.c: eliminate a namespace clash caused by
+	BuiltinFuncTable not being static.
+
+	* generic/tclObj.c: fix a namespace clash caused by a missing
+	static for pendingObjData.
+
+2005-08-17  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclEvent.c (Tcl_Finalize): Removed a copy-and-paste accident
+	that caused a (mostly harmless) double finalize of the load and
+	filesystem subsystems.
+	* tests/clock.test: Eliminated the bad test clock-43.1, and split
+	clock-50.1 into two tests, with a more permissive check on the error
+	message for an out-of-range value.
+
+2005-08-17  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclBasic.c (Tcl_Expr{Long,Double}{,Obj}): Updated to
+	* generic/tclTest.c:                                deal with
+	* tests/expr-old.test:                              bignums (well,
+	* tests/expr.test:                                  mostly).
+	Added a missing "errno=0;" in ExprUnaryFunc so that spurious error
+	returns aren't detected.
+	Added test cases for Tcl_Expr* and Tcl_Expr*Obj because there was very
+	poor test coverage in those areas.
+	* generic/tclParseExpr.c: Reworked parsing of numbers to call
+	TclParseNumber rather than trying to do things locally.
+	* generic/tclStrToD.c: Corrected a comment. Changed so that *endPtrPtr
+	does not include any trailing whitespace.
+
+2005-08-17  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c: New routine TclIncrObj to centralize the
+	increment operation needed in many places. Updated INST_DICT_INCR_IMM
+	to make use of it.
+
+2005-08-16  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c:	Made bit shifting opcodes and INST_MOD
+	bignum-aware.
+
+	* tests/scan.test:	Making << bignum-aware means that repeated
+	* tests/string.test:	left shifting cannot turn a positive into a
+	negative. Revised [int_range] and [largest_int] utility commands in the
+	test suite that relied on that happening. Without revision they became
+	infinite loops.
+
+	* generic/tclExecute.c:	Made binary bitwise opcodes bignum-aware.
+
+	* generic/tclTomMath.h:	Added mp_or and mp_xor to routines from
+	* unix/Makefile.in:	libtommath used by Tcl.
+	* win/Makefile.in:
+	* win/makefile.vc:
+
+2005-08-15  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]	Updates from HEAD.
+	* generic/tclExecute.c:	More revisions to IllegalExprOperandType.
+	Merged INST_BITNOT with INST_UMINUS and make it bignum-aware according
+	to the rule: ~a = -a - 1. Disabled unused code and noted more TODOs.
+
+	* generic/tclInt.decls: Disabled TclLooksLikeInt() and all callers.
+	* generic/tclUtil.c:
+	* generic/tclCompCmds.c:
+
+	* generic/tclBasic.c:	Rewrite of VerifyExprObjType().
+
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclExecute.c: Updated execution of comparison bytecodes to
+	be bignum-aware, routing string compares through INST_STR_CMP.
+
+2005-08-14  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c: Updated execution of arithmetic bytecodes to
+	be bignum-aware, and to allow calculations on NaN to produce a NaN
+	result. INST_UMINUS updated to call mp_neg.
+
+	* generic/tclTomMath.h:	Added mp_and, mp_expt_d, and mp_neg to
+	* unix/Makefile.in:	routines from libtommath used by Tcl.
+	* win/Makefile.in:
+	* win/makefile.vc:
+
+2005-08-13  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclObj.c:	Extended Bignum auto-narrowing to auto-narrow
+	to tclWideIntType when appropriate; this helps keep things working as
+	the bytecode execution code is migrated to supporting bignums.
+
+	* generic/tclExecute.c:	Major overhaul of IllegalExprOperandType.
+	Changed several TclNewFooObj() calls to more logically appropriate
+	ones. Added several TODO comments marking opportunies for future work.
+	Made more use of the eePtr->constants. Made INST_UMINUS bignum aware.
+
+2005-08-12  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c: Simplify doCondJump. Use eePtr->constants as
+	result of INST_DICT_NEXT, INST_LAND, and INST_LOR. Separate INST_LNOT
+	from INST_UMINUS and simplify.
+
+2005-08-12  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclClock.c (MktimeObjCmd):
+	* library/clock.tcl (GetSystemTimeZone, LoadZoneinfoFile)
+	(ReadZoneinfoFile):
+	* tests/clock.test (clock-50.1):
+	Added functionality to read /etc/localtime if it exists, so that Tcl's
+	time can track system time on Linux even if TZ is not set. Changed
+	::tcl::clock::Mktime to check for failure, and added a test case that
+	mimics failure but is really success.
+
+2005-08-11  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclExecute.c: Rewrite of INST_LAND/INST_LOR to take advantage
+	of loss of "pure double" issues. Merged INST_UPLUS with
+	INST_TRY_CVT_TO_NUMERIC and updated to use improved rules for impure
+	"double"s as well.
+
+	* generic/tclStrToD.c:	Restored conditional generation of
+	tclWideIntType values by TclParseNumber so that Tcl's not completely
+	broken while bignum calculation support is incomplete. The NO_WIDE_TYPE
+	macro can be used to disable this.
+
+	* generic/tclBasic.c (ExprAbsFunc): First pass making [expr abs(.)]
+	bignum-aware.
+
+2005-08-11  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclEvent.c:         Eliminated the USE_THREAD_STORAGE option
+	* generic/tclInt.h:           (which is on in every build generated by
+	* generic/tclThread.c:        by the standard configurator).
+	* generic/tclThreadStorage.c: Eliminated the code for thread specific
+	* unix/configure:             data without USE_THREAD_STORAGE and
+	* unix/tcl.m4:                radically refactored the code for
+	* unix/tclConfig.h.in:        USE_THREAD_STORAGE so that it has fewer
+	* unix/tclUnixThrd.c:         dependencies on the order of
+	* win/configure:              finalization. (Also, made 'make
+	* win/Makefile.in:            distclean' on Windows clean just a little
+	* win/rules.vc:               bit cleaner.)
+	* win/tcl.m4:
+	* win/tclWinThrd.c:
+
+2005-08-10  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclTomMath.h:	Added mp_shrink, mp_to_unsigned_bin,
+	* unix/Makefile.in:	mp_to_unsigned_bin_n, and mp_unsigned_bin_size
+	* win/Makefile.in:	to routines from libtommath used by Tcl.
+	* win/makefile.vc:
+
+	* generic/tommath.h:	make gentommath_h
+
+	* generic/tclObj.c:	Substantial rewrite to make all number parsing
+	flow through TclParseNumber(). Also established the NO_WIDE_TYPE and
+	BIGNUM_AUTO_NARROW #ifdef's to help track the assumptions of different
+	portions of the code.
+
+	* generic/tclInt.h:	Added NO_WIDE_TYPE #ifdefs
+
+2005-08-10  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclEvent.c (Tcl_Finalize): Pushed Tcl_FinalizeLoad and
+	Tcl_ResetFilesystem down after Tcl_FinalizeThreadAlloc because we can't
+	unload DLL's until after their TSD keys are finalized. (Note that we'll
+	still see aborts if an unloaded DLL has TSD - that still needs to be
+	fixed.
+
+	* tests/compExpr-old.test (compExpr-3.8): Made tests conditional on
+	* tests/expr.test (expr-3.8):             'unix' because they get
+	stack overflows on Win32 threaded builds,
+
+2005-08-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclPathObj.c: fix to [file rootname] bug in optimized code
+	path reported on comp.lang.tcl.
+
+2005-08-08  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclObj.c:	Replaced some goto's with loops and started
+	use of BIGNUM_AUTO_NARROW and NO_WIDE_TYPE.
+
+2005-08-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclThreadStorage.c: Stop exposing the guts of the thread
+	storage system through the internal stubs table. Client code should
+	always use the standard API.
+
+2005-08-05  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch]
+	* generic/tclObj.c:	Rewrote Tcl_GetDoubleFromObj().
+
+2005-08-05  Donal K. Fellows  <dkf@users.sf.net>
+
+	* unix/tclUnixInit.c (localeTable): Solaris uses a non-standard name
+	for the cp1251 charset. Thanks to Victor Wagner for reporting this.
+	[Bug 1252475]
+
+2005-08-05  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* win/makefile.vc: Removed unused file ldAout.tcl.
+	* win/makefile.bc: [Bug 1244361]
+
+	* tests/binary.test: Cleaned up testing for scanning of NaN. [Bug
+	1246264]
+
+	* generic/tclBasic.c (ExprAbsFunc): Added code to handle the corner
+	* tests/expr.test (expr-38.1):      case of applying 'abs' to the
+	smallest 32-bit integer. [Bug 1241572]
+
+2005-08-04  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclIO.c (CloseChannel): Fixed comment nit, added apparently
+	missing word to complete a sentence.
+
+	* generic/tclObj.c (Tcl_DbDecrRefCount): Fixed whitespace nit in panic
+	message.
+
+2005-08-04  Don Porter  <dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch] Updated from HEAD
+
+	* generic/tclObj.c:	Rewrote Tcl_GetBooleanFromObj() and supporting
+	routines to make use of TclParseNumber. This reduces the potential
+	number of times a string value must be scanned.
+
+	* generic/tclObj.c:	Simplified routines that manage the typeTable.
+	Deleted the UpdateStringOfBoolean() routine, that can never be called.
+
+2005-08-03  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tclCompExpr.c:	Untangled some dependencies in the
+	* generic/tclEvent.c:		order of finalization routines.
+	* generic/tclInt.h:		[Bug 1251399]
+	* generic/tclObj.c:
+
+2005-08-02  Don Porter	<dgp@users.sourceforge.net>
+
+	[kennykb-numerics-branch] Updated from HEAD
+
+2005-07-30  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclLoadDyld.c (TclpDlopen, TclpLoadMemory): workarounds for
+	bugs/changes in behaviour in Mac OS X 10.4 Tiger.
+
+2005-07-29  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCmdIL.c (InfoGlobalsCmd): Even in high-speed mode, still
+	have to take care with non-existant variables. [Bug 1247135]
+
+2005-07-28  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/README: Update link to msys_mingw8.zip.
+
+2005-07-28  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/compExpr-old.test:	Still more conversion of "nonPortable"
+	* tests/error.test:		tests into tests with constraints that
+	* tests/expr-old.test:		describe the limits of their
+	* tests/expr.test:		portability. Also more consolidation
+	* tests/fileName.test:		of constraint synonyms.
+	* tests/format.test:		wideis64bit, 64bitInts => wideIs64bit
+	* tests/get.test:		wideIntegerUnparsed => wideIs32bit
+	* tests/load.test:		wideIntExpressions => wideBiggerThanInt
+	* tests/obj.test:
+	* tests/parseExpr.test:		Dropped "roundOffBug" constraint that
+	* tests/string.test:		protected from buggy sprintf.
+
+2005-07-28  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclPipe.c (TclCreatePipeline): Arrange for POSIX systems to
+	* unix/tclUnixPipe.c (TclpOpenFile):	 use the O_APPEND flag for
+	* tests/exec.test (exec-19.1):		 files opened in a pipeline
+	like ">>this". Note that Windows cannot support such access; there is
+	no equivalent flag on the handle that can be set at the kernel-call
+	level. The test is unix-specific in every way. [Bug 1245953]
+
+2005-07-27  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclUtil.c:	Converted the $::tcl_precision value to be kept
+	per-thread to prevent different threads from stomping on each others'
+	formatting prescriptions.
+
+	***POTENTIAL INCOMPATIBILITY*** Multi-threaded programs that set the
+	value of ::tcl_precision will now have to set it in each thread.
+
+	* tests/expr.test:	Consolidated equivalent constraints into
+	* tests/fileName.test:	single definitions and (more precise) names:
+	* tests/get.test:	longis32bit, 32bit, !intsAre64bit => longIs32bit
+	* tests/listObj.test:	empty => emptyTest; winOnly => win
+	* tests/obj.test:	intsAre64bit => longIs64bit
+	Also updated some "nonPortable" tests to use constraints that mark
+	precisely what about them isn't portable, so the tests can run where
+	they work.
+
+	* library/init.tcl ([unknown]): Corrected return code handling in the
+	portions of [unknown] that expand incomplete commands during
+	interactive operations. [Bug 1214462].
+
+2005-07-26  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/configure.in: Check for a $prefix/share directory and add it the
+	the package if found. This will check for Tcl packages in
+	/usr/local/share when Tcl is configured with the default dist install.
+	[Patch 1231015]
+
+2005-07-26  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_CallWhenDeleted):	Converted to use
+	per-thread counter, rather than a process global one that required
+	mutex protection. [RFE 1077194]
+
+	* generic/tclNamesp.c (TclTeardownNamespace):	Re-ordering so that
+	* tests/trace.test (trace-34.4):	command delete traces fire
+	while the command still exists. [Bug 1047286]
+
+2005-07-24  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* unix/configure: Regen.
+	* unix/tcl.m4 (SC_PROG_TCLSH, SC_BUILD_TCLSH):
+	* win/configure: Regen.
+	* win/tcl.m4 (SC_PROG_TCLSH, SC_BUILD_TCLSH): Split confused search
+	for tclsh on PATH and build and install locations into two macros.
+	SC_PROG_TCLSH searches just the PATH. SC_BUILD_TCLSH determines the
+	name of the tclsh executable in the Tcl build directory. [Bug 1160114]
+	[Patch 1244153]
+
+2005-07-23  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/auto.tcl:	Updates to the Tcl script library to make use
+	* library/history.tcl:	of Tcl 8.4 features. Forward port of
+	* library/init.tcl:	appropriate portions of [Patch 1237755].
+	* library/package.tcl:
+	* library/safe.tcl:
+	* library/word.tcl:
+
+2005-07-23  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* tests/string.test: Add string is tests for functionality that was not
+	tested.
+	* win/README: Update msys + mingw URL. Remove old Cygwin + mingw info.
+
+2005-07-23  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_DICT_*): stop 2 compiler warnings for
+	uninitialised variables.
+
+2005-07-23  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclExecute.c (TEBC:INST_DICT_INCR_IMM): Fix the incrementor
+	to work correctly with wide values.
+
+2005-07-21  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCompCmds.c (TclCompileDictCmd): First run at a compiler
+	* generic/tclExecute.c (TclExecuteByteCode): for dictionaries. Also
+	added an instruction to support 'finally'-like clauses, exposed more of
+	the dict guts to the rest of the core, and defined a few tests to
+	exercise more obscure parts of the compiler's operation that were bugs
+	during development.
+
+2005-07-21  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/ldAout.tcl (***REMOVED***):	Removed support for ancient
+	* unix/configure:			BSD's, IRIX 4, RISCos and
+	* unix/Makefile.in:			Ultrix. Removed two files whose
+	* unix/tcl.m4:				code is used only on those
+	* unix/tclLoadAout.c (***REMOVED***):	antique platforms.
+
+	***POTENTIAL INCOMPATIBILITY*** if anyone actually uses those
+	platforms; it is to be noted though, that an error in the installer has
+	actually not caused a necessary file to be installed on those platforms
+	in several releases, and nobody's complained.
+
+2005-07-16  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclStrToD.c (RefineResult):  Plugged a stupid memory leak in
+	RefineResult (called from Tcl_StrToD). [Tk Bug 1227781]
+
+2005-07-15  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclClock.c (TclClockLocaltimeObjCmd,ThreadSafeLocalTime):
+	* library/clock.tcl (GuessWindowsTimeZone, ClearCaches):
+	* tests/clock.test (clock-49.1, clock-49.2):
+	Handle correctly the case where localtime() returns NULL to report a
+	conversion error. Also handle the case where the Windows registry
+	contains timezone values that can be mapped to a tzdata file name but
+	the corresponding file does not exist or is corrupted, by falling back
+	on a Posix timezone string instead; this last case will avoid calls to
+	localtime() in starpacks on Windows. [Bug 1237907]
+
+2005-07-14  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* generic/tclCompile.c: Update to follow style guidelines.
+	(TclPrintInstruction): Reorganize to do better printing out of bytecode
+	with far fewer "special hacks" for particular opcodes.
+	* generic/tclCompile.h: Requires two new opcode types.
+
+2005-07-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tclUnixSock.c:	Use a ProcessGlobalValue to store the value
+	* win/tclWinSock.c:	returned by Tcl_GetHostName() ([info
+	hostname]). Also re-order initialization of the value on Windows to
+	favor GetComputerName() over gethostname() as a source of the
+	information.
+
+2005-07-12  Kevin Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Updated from HEAD
+
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd):
+	* generic/tclInt.h:
+	* generic/tclObj.c (Tcl_GetDoubleFromObj, SetDoubleFromAny)
+	(Tcl_GetIntFromObj, SetIntOrWideFromAny):
+	* generic/tclStrToD.c (TclParseNumber, etc.):
+	* tclTomMathInterface.c (TclBNInitBignumFromWideUInt):
+	* tests/obj.test (obj-1.1, obj-2.2, obj-3.1, obj-3.2):
+
+	Initial attempt at an implementation of TIP #249, comprising a unified
+	parser and modifications to the Tcl_Get*FromObj routines to use it.
+	Further integration of the parser is necessary and planned.
+
+2005-07-12  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/lsearch.n: Clarify documentation of -exact option; wording was
+	open to misinterpretation by non-English speakers.
+
+2005-07-11  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclExecute.c: General style cleanup.
+
+2005-07-08  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): Reimplement long and wide
+	type integer division and modulus operations so that the smallest and
+	largest integer values are handled properly. The divide operation is
+	more efficient since it no longer does a modulus or negation and only
+	checks for a remainder when the quotient will be a negative number.
+	The modulus operation is now a bit more complex because of a number of
+	special cases dealing with the smallest and largest integers.
+	* tests/expr.test: Add test cases for division and modulus operations
+	on the smallest and largest integer values for 32 and 64 bit types.
+	[Patch 1230205]
+
+2005-07-06  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclLink.c:	Simplified LinkTraceProc [Bug 1208108].
+
+2005-07-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/Makefile.in:	Purged use of TCLTESTARGS [RFE 1161550].
+
+	* generic/tclUtil.c:	Converted TclFormatInt() into a macro.
+	* generic/tclInt.decls:	[RFE 1194015]
+	* generic/tclInt.h:
+
+	* generic/tclIntDecls.h:	make genstubs
+	* generic/tclStubInit.c:
+
+	* generic/tclNamesp.c:	Allow for [namespace import] of a command
+	* tests/namespace.test:	over a previous [namespace import] of itself
+	without throwing an error. [RFE 1230597]
+
+2005-07-04  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclDictObj.c (DictForCmd, DictFilterCmd): Interlocking of
+	dictionary internal representations is now done in the core of the dict
+	iterator. Purge the last attempts at doing it at a higher level as they
+	didn't work and were no longer needed.
+
+2005-07-01  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
+
+	* unix/tclUnixNotfy.c: protect against spurious wake-ups while waiting
+	on the condition variable when tearing down the notifier thread [Bug
+	1222872].
+
+2005-06-28  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclExecuteByteCode): When parsing an integer
+	operand for a unary minus expression operator, check for a wide integer
+	that is actually LONG_MIN. If found, convert back to a long int type.
+	* tests/expr.test: Add constraint for 32bit long int type and 64bit
+	wide int type. Add tests that parse the smallest/largest long int and
+	wide int values.
+
+2005-06-24  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclEvent.c (Tcl_Finalize):
+	* generic/tclInt.h:
+	* generic/tclPreserve.c (TclFinalizePreserve): Changed the finalization
+	logic so that Tcl_Preserve finalizes after exit handlers run; a lot of
+	code called from Tk's exit handlers presumes that Tcl_Preserve will
+	still work even from an exit handler.
+
+2005-06-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/auto.tcl:	Make file safe to re-[source] without
+	destroying registered auto_mkindex_parser hooks.
+
+2005-06-23  Kevin Kenny  <kennykb@acm.org>
+
+	* win/tclWinChan.c: More rewriting of __asm__ blocks that implement
+	* win/tclWinFCmd.c: SEH in GCC, because mingw's gcc 3.4.2 is not as
+	forgiving of violations committed by the old code and caused panics.
+	[Bug 1225957]
+
+2005-06-23  Daniel Steffen  <das@users.sourceforge.net>
+
+	* tools/tcltk-man2html.tcl: fixed useversion glob pattern to accept
+	multi-digit patchlevels.
+
+2005-06-22  Don Porter	<dgp@users.sourceforge.net>
+
+	* win/tclWinFile.c: Potential buffer overflow. [Bug 1225571] Thanks to
+	Pat Thoyts for discovery and fix.
+
+2005-06-22  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclInt.h:			    Changed the finalization
+	* generic/tclEvent.c (Tcl_Finalize):	    logic to defer the
+	* generic/tclIO.c (TclFinalizeIOSubsystem): shutdown of the pipe
+	* unix/tclUnixPipe.c (TclFinalizePipes):    management until after all
+	* win/tclWinPipe.c (TclFinalizePipes):	    channels have been closed,
+	in order to avoid a situation where the Windows PipeCloseProc2 would
+	re-establish the exit handler after exit handlers had already run,
+	corrupting the heap. [Bug 1225727] Also corrected a potential read of
+	uninitialized memory in PipeClose2Proc [Bug 1225044]
+
+2005-06-21  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclInt.h: Followup to change made on 2005-06-18 by Daniel
+	Steffen. There are compilers (*) who error out on the redefinition of
+	WORDS_BIGENDIAN. We have to undef the previous definition (on the
+	command line) first to make this acceptable. (*): AIX native.
+
+2005-06-21  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclFileName.c: Changed [file split] and [file join] to treat
+	Windows drive letters similarly to ~ syntax and make sure that they
+	appear with "./" in front when they are in intermediate components of
+	the path. [Bug 1194458]
+	* tests/fileName.test: Added test for the above bug.
+
+2005-06-21  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Added missing walk of the list of active
+	* generic/tclTrace.c:	traces to cleanup references to traces being
+	* generic/tclInt.h:	deleted. [Bug 1201035] Made the walk of the
+	* tests/trace.test (trace-34.*): active trace list aware of the
+	direction of trace scanning, so the proper correction can be made.
+	[Bug 1224585]
+
+2005-06-21  Donal K. Fellows  <dkf@users.sf.net>
+
+	* unix/tcl.m4 (SC_ENABLE_SYMBOLS): Only enable the 'compile' special
+	debugging feature when requested in configure.in; removes irrelevant
+	junk from the configure files of extensions that use Tcl's tcl.m4.
+
+2005-06-20  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCompile.h (INST_PUSH_RETURN_OPTIONS): New opcode to allow
+	* generic/tclCompCmds.c (TclCompileCatchCmd):	   compilation of
+	* generic/tclCompile.c:				   TIP#90 catch [Bug
+	* generic/tclExecute.c (TclExecuteByteCode):	   1219112]
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Ensure we spill to the
+	command form in all cases where it generates an error.
+
+2005-06-20  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): Generate an error if a mode
+	argument like -exact is passed more than once to the switch command.
+	The previous implementation silently accepted invalid switch
+	invocations like [switch -exact -glob $str ...].
+	* tests/for.test: Check some error cases when invoking continue and
+	break inside a for loop next script.
+	* tests/switch.test: Add checks for shortened version of a mode
+	argument like -exact. Add test for more than one mode argument. Add
+	test for odd case of passing a variable as a body script.
+
+2005-06-18  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.h: ensure WORDS_BIGENDIAN is defined correctly with
+	fat compiles on Darwin (i.e. ppc and i386 at the same time), the
+	configure AC_C_BIGENDIAN check is not sufficient in this case because a
+	single run of the compiler builds for two architectures with different
+	endianness.
+
+	* unix/tcl.m4 (Darwin): add -headerpad_max_install_names to LDFLAGS to
+	ensure we can always relocate binaries with install_name_tool.
+
+	* unix/configure: autoconf-2.59
+
+2005-06-18  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCmdAH.c (Tcl_FormatObjCmd): Fix for [Bug 1154163]; only
+	* tests/format.test: insert 'l' modifier when it is needed.
+
+2005-06-17  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclTimer.c (AfterDelay): Split out the code to manage
+	synchronous-delay [after] commands.
+	* tests/interp.test (interp-34.10): Time limits and synch-delay [after]
+	did not mix well... [Bug 1221395]
+
+2005-06-14  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_DeleteCommandFromToken): Only delete a
+	* tests/namespace.test (namespace-49.2): command from the hashtable on
+	reentrant processing if it has not been already deleted; at least three
+	deletes of the same command are possible. [Bug 1220058]
+	* generic/tclTrace.c (TraceCommandProc): Remove bogus error message
+	creation when traces trigger in situations where the command has
+	already been deleted.
+
+2005-06-13  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFCmd.c: correct fix to file mkdir 2005-06-09 [Bug 1219176]
+
+2005-06-12  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCompCmds.c: Factor out some common idioms into named forms
+	for greater clarity.
+
+2005-06-10  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/chan.n: Fold in the descriptive parts of the documentation for
+	all the commands that [chan] builds on top of.
+
+2005-06-09  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFCmd.c: fix to race condition in file mkdir [Bug 1217375]
+	* doc/glob.n: improve glob documentation [Bug 1190891]
+
+2005-06-09  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/expr.n, doc/mathfunc.n: Fix minor typos [Bug 1211078] and add
+	mention of distinctly-relevant [namespace path] subcommand.
+
+2005-06-07  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h:		Reduced the Tcl_ObjTypes "index",
+	* generic/tclIndexObj.c:	"ensembleCmd", "localVarName", and
+	* generic/tclNamesp.c:		"levelReference" to file static scope.
+	* generic/tclProc.c:
+	* generic/tclVar.c:
+
+	* generic/tclObj.c:	Restored registration of the "procbody"
+	Tcl_ObjType, as required by the tclcompiler application.
+
+	* generic/tclDecls.h:		make genstubs
+	* generic/tclStubInit.c:
+
+2005-06-07  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclIO.c (Tcl_ChannelTruncateProc): Stop proliferation of
+	* generic/tcl.h:			     channel type versions
+	* doc/CrtChannel.3:			     following advice from AKu
+
+	Bump patchlevel to a4 to distinguish from a3 release.
+
+	* generic/tclInt.h (INTERP_TRACE_IN_PROGRESS): Add flag so the error
+	* generic/tclIndexObj.c (Tcl_WrongNumArgs):    messages from ensembles
+	* generic/tclIOCmd.c (Tcl_ReadObjCmd):	       can be correct.
+
+	TIP#208 IMPLEMENTATION
+
+	* library/init.tcl: Create the chan ensemble.
+	* tests/chan.test: Rudimentary test suite.
+	* doc/chan.n: General documentation.
+
+	TRUNCATION API (part of TIP#208)
+	* generic/tcl.h, generic/tcl.decls: Declaration of the API.
+	* doc/CrtChannel.3, doc/OpenFileChnl.3: Documentation of the API.
+	* generic/tclBasic.c (Tcl_CreateInterp): Create the mapping into Tcl.
+	* generic/tclIOCmd.c (TclChanTruncateObjCmd): Implementation of
+	Tcl-level truncation API.
+	* generic/tclIO.c (Tcl_TruncateChannel): Generic C-level truncation API
+	implementation.
+	* unix/tclUnixChan.c (FileTruncateProc): Basic implementation of
+	truncating driver.
+
+	* win/tclWinChan.c (FileTruncateProc): Added implementation of file
+	truncation for Windows.
+	* tests/chan.test (chan-15.2): Added real test of truncation.
+
+2005-06-06  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/tclWin32Dll.c: Corrected another buglet in the assembly code for
+	stack probing on Win32/gcc. [Bug 1213678]
+	* generic/tclObj,c: Added missing 'static' on definition of
+	UpdateStringOfBignum, and removed a 'switch' on a 'long long' operand
+	(which HP-UX native 'cc' seems unable to handle). [Bug 1215775]
+
+2005-06-04  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	*** 8.5a3 TAGGED FOR RELEASE ***
+
+	* unix/Makefile.in (dist): add libtommath
+
+2005-06-03  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* library/parray.tcl (parray): Only generate the sorted list of element
+	names once. Thanks to Andreas Leitgeb for spotting this.
+
+2005-06-03  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: fixed 'embedded' target.
+
+2005-06-02  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/Makefile.in (html): add BUILD_HTML_FLAGS optional var
+	* tools/tcltk-man2html.tcl: add a --useversion to prevent confusion
+	when multiple Tcl source dirs exist.
+
+2005-06-01  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	For compatibility with earlier Tcl releases,
+	* generic/tclResult.c:	when a command procedure simply does a
+	* generic/tclTest.c:	"return TCL_RETURN;" we must interpret that
+	* tests/result.test:	the same as
+	"return Tcl_SetReturnOptions(interp, Tcl_NewObj());"  [Bug 1209759].
+
+2005-06-01  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Allow compilation of
+	-nocase -glob [switch]es (only one we know how to compile).
+
+	TIP#241 IMPLEMENTATION from Joe Mistachkin
+
+	* generic/tclCmdIL.c (Tcl_LsearchObjCmd, Tcl_LsortObjCmd):
+	* generic/tclCmdMZ.c (Tcl_SwitchObjCmd): Implementation of -nocase
+	option for [lsearch], [lsort] and [switch] commands.
+	* win/tclWinPort.h: Win uses nonstandard function names...
+	* tests/cmdIL.test, tests/lsearch.test, tests/switch.test: Tests
+	* doc/lsearch.n, doc/lsort.n, doc/switch.n: Docs
+
+	* generic/tclCompCmds.c (TclCompileLindexCmd): Compile the most common
+	case of [lindex] more efficiently.
+
+	* unix/tclUnixNotfy.c (Tcl_FinalizeNotifier): Pass the correct number
+	of arguments to Tcl_JoinThread.
+
+2005-05-31  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/configure.in, unix/tcl.m4: Standardize generation of help
+	messages to always use AC_HELP_STRING and always (except for --with-tcl
+	and --with-tk, where the default is complex) say what the default is.
+
+2005-05-31  Zoran Vasiljevic  <vasiljevic@users.sourceforge.net>
+
+	* unix/tclUnixNotfy.c: the notifier thread is now created as joinable
+	thread and it is properly joined in Tcl_FinalizeNotifier. This is an
+	attempt to fix the [Bug 1082283].
+
+2005-05-30  Zoran Vasiljevic  <vasiljevic@users.sf.net>
+
+	* win/tclWinThrd.c: Fixed [Bug 1204064]
+
+2005-05-30  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	TIP #229 IMPLEMENTATION
+
+	* generic/tclNamesp.c (Tcl_FindCommand, TclResetShadowedCmdRefs)
+	(NamespacePathCmd, SetNsPath, UnlinkNsPath, TclInvalidateNsPath):
+	Implementation of the [namespace path] command and the command name
+	resolution engine.
+	* doc/info.n, doc/namespace.n: Doc updates.
+	* tests/namespace.test (namespace-51.*): Test updates.
+	* generic/tclResolve.c (BumpCmdRefEpochs, Tcl_SetNamespaceResolvers):
+	* generic/tclBasic.c (Tcl_CreateCommand, Tcl_CreateObjCommand): Ensure
+	that people don't see stale paths.
+	* generic/tclInt.h (Namespace, NamespacePathEntry): Structure defs.
+	* generic/tclCmdIL.c (InfoCommandsCmd): Updates to [info commands].
+
+2005-05-26  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/Makefile: moved & corrected EMBEDDED_BUILD check.
+
+	* unix/configure.in: corrected framework finalization to softlink stub
+	library to Versions/8.x subdir instead of Versions/Current.
+	* unix/configure: autoconf-2.59
+
+2005-05-25  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclCmdMZ.c (Tcl_TimeObjCmd): add necessary cast
+
+2005-05-25  Don Porter	<dgp@users.sourceforge.net>
+
+	TIP#182 IMPLEMENTATION	[Patch 1165062]
+
+	* doc/mathfunc.n:	New built-in math function bool().
+	* generic/tclBasic.c:
+	* tests/expr.test:
+	* tests/info.test:
+
+2005-05-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/init.tcl:	Updated [unknown] to be sure the [return]
+	* tests/init.test:	options from an auto-loaded command are seen
+	correctly by the caller.
+
+2005-05-24  Daniel Steffen  <das@users.sourceforge.net>
+
+	* tests/env.test: added DYLD_FRAMEWORK_PATH to the list of env vars
+	that need to be handled specially.
+
+	* macosx/Makefile:
+	* macosx/README:
+	* macosx/Tcl-Info.plist.in (new file):
+	* unix/Makefile.in:
+	* unix/configure.in:
+	* unix/tcl.m4:
+	* unix/tclUnixInit.c: moved all Darwin framework build support from
+	macosx/Makefile into the standard unix configure/make buildsystem, the
+	macosx/Makefile is no longer required to build Tcl.framework (but its
+	functionality is still available for backwards compatibility).
+	* unix/configure: autoconf-2.59
+
+	* generic/tclIOUtil.c (TclLoadFile):
+	* generic/tclInt.h:
+	* unix/tcl.m4:
+	* unix/tclLoadDyld.c: added support for [load]ing .bundle binaries in
+	addition to .dylib's: .bundle's can be [unload]ed (unlike .dylib's),
+	and can be [load]ed from memory, e.g. directly from VFS without needing
+	to be written out to a temporary location first. [Bug 1202209]
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
+
+	* generic/tclCmdMZ.c (Tcl_TimeObjCmd): change [time] called with a
+	count > 1 to return a string with a float value instead of a rounded
+	off integer. [Bug 1202178]
+
+	* doc/expr.n:
+	* doc/string.n: fixed roff syntax complaints from 'make html'.
+
+2005-05-20  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclParseExpr.c:	Corrected parser to recognize all
+	boolean literals accepted by Tcl_GetBoolean, including prefixes like
+	"y" and "f", and to allow "eq" and "ne" as function names in the proper
+	context. [Bug 1201589].
+
+2005-05-19  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclBasic.c (TclEvalObjvInternal): Rewrite for greater
+	clarity; although 'goto' is Bad, the contortions you have to go through
+	to avoid it can be worse...
+
+2005-05-19  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/tclMacOSXNotify.c (Tcl_InitNotifier): fixed crashing CFRelease
+	of runLoopSource in Tcl_InitNotifier (reported by Zoran):
+	CFRunLoopAddSource doesn't CFRetain, so can only CFRelease the
+	runLoopSource in Tcl_FinalizeNotifier.
+
+2005-05-18  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (Tcl_ExprBoolean):	Rewrite as wrapper around
+	Tcl_ExprBooleanObj.
+
+	* generic/tclCmdMZ.c ([string is boolean/true/false]): Rewrite dropping
+	string-based Tcl_GetBoolean call, so that internal reps are kept for
+	subsequent quick boolean operations.
+
+	* generic/tclExecute.c:	Dropped most special handling of the "boolean"
+	Tcl_ObjType, since that type should now be rarely encountered.
+
+	* doc/BoolObj.3:	Rewrite of documentation dropping many details
+	about the internals of Tcl_Objs. Shorter documentation focuses on the
+	function and use of the routines.
+
+	* generic/tclInt.h:	Revision to the "boolean" Tcl_ObjType, so that
+	* generic/tclObj.c:	only string values like "yes" and "false" are
+	* tests/obj.test:	kept as the "boolean" Tcl_ObjType. The string
+	values "0" and "1" are kept as "int" Tcl_ObjType, which also produce
+	quick calls to Tcl_GetBooleanFromObj(). Since this internal change
+	means a Tcl_ConvertToType to a "boolean" Tcl_ObjType might not produce
+	a Tcl_Obj of type "boolean", the registration of the "boolean" type is
+	also removed.
+	***POTENTIAL INCOMPATIBILITY***
+	For callers of Tcl_GetObjType on the type name "boolean".
+
+2005-05-17  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclObj.c (TclInitObjSubsystem):	Removed the
+	* tests/listObj.test:	registration of the Tcl_ObjType's "list",
+	* tests/obj.test:	"procbody", "index", "ensembleCommand",
+	"localVarName", and "levelReference". The only reason to register a
+	Tcl_ObjType is to have it returned by Tcl_GetObjType, and the only
+	reason for that is to retrieve a (Tcl_ObjType *) to pass to
+	Tcl_ConvertToType(). None of the types above can support a
+	Tcl_ConvertToType() call; they panic. Better not to offer something
+	than to lead users into a panic.
+	***POTENTIAL INCOMPATIBILITY***
+	For callers of Tcl_GetObjType on the type names listed above.
+
+2005-05-15  Kevin Kenny  <kennykb@users.sourceforge.net>
+
+	* win/tclWin32Dll.c: conditioned definition of EXCEPTION_REGISTRATION
+	structures on HAVE_NO_SEH, to fix a bug in buildability on MSVC.
+
+2005-05-14  Daniel Steffen  <das@users.sourceforge.net>
+
+	* generic/tclInt.decls:
+	* generic/tclTest.c:
+	* generic/tclUtil.c:
+	* win/tclWin32Dll.c: fixed link error due to direct access by tclTest.c
+	to the MODULE_SCOPE tclPlatform global: renamed existing
+	TclWinGetPlatform() accessor to TclGetPlatform() and moved it to
+	generic code so that it can be used by on all platforms where
+	MODULE_SCOPE is enforced.
+
+	* macosx/tclMacOSXBundle.c:
+	* unix/tclUnixInit.c:
+	* unix/tcl.m4 (Darwin): made use of CoreFoundation API configurable and
+	added test of CoreFoundation availablility to allow building on ppc64,
+	replaced HAVE_CFBUNDLE by HAVE_COREFOUNDATION; test for availability of
+	Tiger or later OSSpinLockLock API.
+
+	* unix/tclUnixNotfy.c:
+	* unix/Makefile.in:
+	* macosx/tclMacOSXNotify.c (new file): when CoreFoundation is
+	available, use new CFRunLoop based notifier: allows easy integration
+	with other event loops on Mac OS X, in particular the TkAqua Carbon
+	event loop is now integrated via a standard tcl event source (instead
+	of TkAqua upon loading having to finalize the exsting notifier and
+	replace it with its custom version). [Patch 1202052]
+
+	* tests/unixNotfy.test: don't run unthreaded tests on Darwin since
+	notifier may be using threads even in unthreaded core.
+
+	* unix/tclUnixPort.h:
+	* unix/tcl.m4 (Darwin): test for thread-unsafe realpath during
+	configure, as Darwin 7 and later realpath is threadsafe.
+
+	* macosx/Makefile: enable configure caching.
+
+	* unix/configure.in: wrap tclConfig.h header in #ifndef _TCLCONFIG so
+	that it can be included more than once without warnings from gcc4.0 (as
+	happens e.g. when including both tclInt.h and tclPort.h)
+
+	* macosx/tclMacOSXBundle.c:
+	* unix/tclUnixChan.c:
+	* unix/tclLoadDyld.c:
+	* unix/tclUnixInit.c: fixed gcc 4.0 warnings.
+
+	* unix/configure: autoconf-2.59
+	* unix/tclConfig.h.in: autoheader-2.59
+
+	* generic/tclIntDecls.h:
+	* generic/tclIntPlatDecls.h:
+	* generic/tclStubInit.c: make genstubs
+
+2005-05-13  Kevin Kenny  <kennykb@acm.org>
+
+	* win/tclWin32Dll.c: Further rework of the SEH logic. All
+	EXCEPTION_REGISTRATION records are now in the activation record rather
+	than pushed on the stack.
+
+2005-05-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Dropped the TCL_NO_MATH configuration. It's
+	* generic/tclBinary.c:	believed this has not been working in a long
+	* generic/tclExecute.c: time. Tcl needs math.h. [RFE 1200680]
+	* unix/Makefile.in:
+
+2005-05-12  Kevin Kenny  <kennykb@acm.org>
+
+	* doc/mathfunc.n: Changed NAME line to match the name of the page.
+
+2005-05-11  Kevin Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Resynchronized with the HEAD; at this
+	checkpoint [-rkennykb-numerics-branch-20050511], the HEAD and
+	kennykb-numerics-branch contain identical code.
+
+2005-05-11  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclStrToD.c (TclStrToD, RefineResult, ParseNaN): Changed the
+	code to cast 'char' to UCHAR explicitly when using ctype macros, to
+	silence complaints from the Solaris compiler.
+
+2005-05-10  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/tclUnixFCmd.c: add lint attr to enum to satisfy strictly
+	compliant compilers that don't like trailing ,s.
+
+	* tests/string.test: string-10.[21-30]
+	* generic/tclCmdMZ.c (Tcl_StringObjCmd): add extra checks to prevent
+	possible UMR in unichar cmp function for string map.
+
+2005-05-10  Kevin Kenny  <kennykb@acm.org>
+
+	* generic/tclBinary.c (FormatNumber): Fixed a bug where NaN's resulted
+	in reads of uninitialized memory when using 'd', 'q', or 'Q' format.
+	* generic/tclStrToD.c (ParseNaN, TclFormatNaN): Added code to handle
+	the peculiarities of HP's PA_RISC, which uses a different 'quiet' bit
+	in NaN from everyone else.
+	* libtommath/tommath_superclass.h: Corrected C++-style comment.
+
+2005-05-10  Kevin Kenny  <kennykb@acm.org>
+
+	Merged all changes on kennykb-numerics-branch back into the HEAD.
+	TIP's 132 and 232 are now Final.
+
+2005-05-10  Kevin Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Merged changes from HEAD.
+
+2005-05-10  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c (ExponLong, ExponWide):
+	* tests/expr.test (expr-23.34/35): fixed special case 'i**0' for i>0
+	[Bug 1198892]
+
+2005-05-09  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+	* win/tclWin32Dll.c (TclpCheckStackSpace, TclWinCPUID): Reworked
+	structured event handling to function even with -fomit-frame-pointers.
+
+2005-05-08  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+	* generic/tclStrToD.c: Made code more portable by finding a workaround
+	for MSVC's 'volatile' issue that does not require conditional
+	compilation.
+	* win/tclWin32Dll.c (TclWinCPUID): Removed structured event handling
+	from the GCC code since (a) bad code is generated by the instruction
+	scheduling with -O2, and (b) it's not needed on any reasonably modern
+	CPU.
+
+2005-05-07  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+	* generic/tclEvent.c:  Moved initialization of tclStrToD.c's
+	* generic/tclInt.h:    static constants into a procedure called
+	* generic/tclStrToD.c: from TclInitSubsystems to avoid double checked
+	locking protocol. Cleaned up an issue where MSVC ignored the
+	'volatile' specifier, causing incorrect comparison of an underflowed
+	number against zero.
+
+2005-05-06  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/tcl.m4, unix/configure: correct Solaris 10 (5.10) check and add
+	support for x86_64 Solaris cc builds.
+
+2005-05-05  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Merged with HEAD.
+
+2005-05-05  Kevin B. Kenny  <kennykb@acm.org>
+
+	* win/tclWinThrd.c:  Corrected a compilation error on the
+			     --enable-threads configuration.
+
+2005-05-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.decls:	Converted TclMatchIsTrivial to a macro.
+	* generic/tclInt.h:
+	* generic/tclUtil.c:
+	* generic/tclIntDecls.h:	`make genstubs`
+	* generic/tclStubInit.c:
+	* generic/tclBasic.c:	Added callers of TclMatchIsTrivial where a
+	* generic/tclCmdIL.c:	search can be done more efficiently when it is
+	* generic/tclCompCmds.c:recognized that a pattern match is really an
+	* generic/tclDictObj.c:	exact match. [Patch 1076088]
+	* generic/tclIO.c:
+	* generic/tclNamesp.c:
+	* generic/tclVar.c:
+
+	* generic/tclCompCmds.c:	Factored common efficiency trick into a
+	macro named CompileWord.
+
+	* generic/tclCompCmds.c:	Replaced all instance of
+	* generic/tclCompile.c:		TCL_OUT_LINE_COMPILE with TCL_ERROR.
+	* generic/tclInt.h:		Now that we've eradicated the mistaken
+	* tests/appendComp.test:	notion of a "compile-time error", we
+	can use the TCL_ERROR return code to signal any failure to produce
+	bytecode.
+
+2005-05-03  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/DString.3:	Eliminated use of identifier "string" in Tcl's
+	* doc/Environment.3:	public C API to avoid conflict/confusion with
+	* doc/Eval.3:		the std::string of C++.
+	* doc/ExprLong.3, doc/ExprLongObj.3, doc/GetInt.3, doc/GetOpnFl.3:
+	* doc/ParseCmd.3, doc/RegExp.3, doc/SetResult.3, doc/StrMatch.3:
+	* doc/Utf.3, generic/tcl.decls, generic/tclBasic.c, generic/tclEnv.c:
+	* generic/tclGet.c, generic/tclParse.c, generic/tclParseExpr.c:
+	* generic/tclRegexp.c, generic/tclResult.c, generic/tclUtf.c:
+	* generic/tclUtil.c, unix/tclUnixChan.c:
+
+	* generic/tclDecls.h:	`make genstubs`
+
+2005-05-02  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tcl.decls:
+	* generic/tclBasic.c:	Simplified implementation of Tcl_ExprString.
+	* tests/expr-old.test:
+
+	* generic/tclDecls.h:	`make genstubs`
+
+2005-04-30  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tclUnixNotfy.c: applied dkf's tkMacOSXNotify.c cleanup changes.
+
+2005-04-29  Don Porter	<dgp@users.sourceforge.net>
+
+	TIP#176 IMPLEMENTATION	[Patch 1165695]
+
+	* generic/tclUtil.c:	Extended TclGetIntForIndex to recognize index
+	formats including end+integer and integer+/-integer.
+
+	* generic/tclCmdMZ.c:	Extended the -start switch of [regexp] and
+	[regsub] to accept all index formats known by TclGetIntForIndex.
+
+	* doc/lindex.n:		Updated docs to note new index formats.
+	* doc/linsert.n, doc/lrange.n, doc/lreplace.n, doc/lsearch.n:
+	* doc/lset.n, doc/lsort.n, doc/regexp.n, doc/regsub.n, doc/string.n:
+
+	* tests/cmdIL.test:	Updated tests.
+	* tests/compile.test, tests/lindex.test, tests/linsert.test:
+	* tests/lrange.test, tests/lreplace.test, tests/lsearch.test:
+	* tests/lset.test, tests/regexp.test, tests/regexpComp.test:
+	* tests/string.test, tests/stringComp.test, tests/util.test:
+
+2005-04-28  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/unixInit.test (7.1): Alternative fix for the 2004-11-11 commit.
+
+2005-04-27  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/init.tcl:	Corrected flaw in interactive command
+	* tests/main.test:	auto-completion. [Bug 1191409].
+
+	TIP#183 IMPLEMENTATION	[Patch 577093]
+
+	* generic/tclIOUtil.c (TclGetOpenModeEx):	New routine.
+	* generic/tclInt.h:
+
+	* generic/tclIO.c (Tcl_OpenObjCmd):	Support for "b" and
+	* doc/open.n:		"BINARY" in "access" argument to [open].
+	* tests/ioCmd.test:
+
+2005-04-26  Kevin B. Kenny  <kennykb@users.sourceforge.net>
+
+	* generic/tclBinary.c (FormatNumber): Dredge the NaN out of the
+	internal representation if Tcl_GetDoubleFromObj returns TCL_ERROR on a
+	NaN.
+
+	* generic/tclObj.c (Tcl_GetDoubleFromObj): Restored silent
+	overflow/underflow behaviour that the merge of 2004-04-25 messed up.
+	Thanks to Don Porter for calling attention to this bug. Also removed an
+	uninitialised memory reference in this function that valgrind caught.
+	Also changed to return TCL_ERROR on a pure NaN.
+
+	* generic/tclStrToD.c (RefineResult): Added a test for the initial
+	approximation being HUGE_VAL; this test avoids EDOM being returned from
+	ldexp on some platforms on input values exceeding the floating point
+	range.
+
+	* tests/expr.test (expr-29.*, expr-30.*): Added further tests of
+	overflow/underflow on input conversions.
+
+2005-04-25  Kevin B. Kenny  <kennykb@users.sourceforge.net>
+
+	[kennykb-numerics-branch] Merged with HEAD.
+
+	* doc/CrtMathFunc.n:		Revised documentation for TIP 232
+
+2005-04-25  Daniel Steffen  <das@users.sourceforge.net>
+
+	* compat/string.h: fixed memchr() protoype for __APPLE__ so that we
+	build on Mac OS X 10.1 again.
+
+	* generic/tclNotify.c (TclFinalizeNotifier): fixed notifier not being
+	finalized in unthreaded core (was testing for notifier initialization
+	in current thread by checking thread id != 0 but thread id is always 0
+	in untreaded core).
+
+	* win/tclWinNotify.c (Tcl_WaitForEvent):
+	* unix/tclUnixNotfy.c (Tcl_WaitForEvent): don't call ScaleTimeProc for
+	zero wait times (as specified in TIP 233).
+
+	* unix/Makefile.in: added @PLAT_SRCS@ to SRCS and split out NOTIFY_SRCS
+	from UNIX_SRCS for parity with UNIX_OBJS & NOTIFY_OBJS.
+
+	* unix/tcl.m4 (Darwin): added configure checks for recently added
+	linker flags -single_module and -search_paths_first to allow building
+	with older tools (and on Mac OS X 10.1), use -single_module in SHLIB_LD
+	and not just T{CL,K}_SHLIB_LD_EXTRAS, added unexporting from Tk of
+	symbols from libtclstub to avoid duplicate symbol warnings, added
+	PLAT_SRCS definition for Mac OS X, defined MODULE_SCOPE to
+	__private_extern__.
+	(SC_MISSING_POSIX_HEADERS): added caching of dirent.h check.
+
+	* unix/configure: autoconf-2.59
+
+2005-04-25  Kevin B. Kenny  <kennykb@users.sourceforge.net>
+
+	* library/tzdata/America/Boise:
+	* library/tzdata/America/Chicago:
+	* library/tzdata/America/Denver
+	* library/tzdata/America/Indianapolis:
+	* library/tzdata/America/Los_Angeles:
+	* library/tzdata/America/Louisville:
+	* library/tzdata/America/Managua:
+	* library/tzdata/America/New_York:
+	* library/tzdata/America/Phoenix:
+	* library/tzdata/America/Port-au-Prince:
+	* library/tzdata/America/Indiana/Knox:
+	* library/tzdata/America/Indiana/Marengo:
+	* library/tzdata/America/Indiana/Vevay:
+	* library/tzdata/America/Kentucky/Monticello:
+	* library/tzdata/America/North_Dakota/Center:
+	* library/tzdata/Asia/Tehran:
+	Olson's tzdata2005i. Corrects exact time at which Standard Time was
+	adopted in the US (generally, noon, Standard Time, rather than noon,
+	Local Mean Time). Adopts new civil rules for Nicaragua and Iran.
+
+2005-04-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/init.tcl:	Use "ni" and "in" operators.
+
+2005-04-25  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: fix for [Bug 1189274].
+
+2005-04-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclLiteral.c:	Silence compiler warnings.
+	* generic/tclObj.c:	[Bug 1188863].
+
+2005-04-22  Don Porter	<dgp@users.sourceforge.net>
+
+	The 2005-04-21 changes to Tcl_GetBooleanFromObj were done to bring it
+	into agreement with its docs. Further investigation reveals it was the
+	docs that were incorrect.
+
+	* doc/BoolObj.3:	Corrections to the documentation of
+	Tcl_GetBooleanFromObj to bring it into agreement with what this public
+	interface has always done, including noting the difference in function
+	between Tcl_GetBooleanFromObj and Tcl_GetBoolean.
+
+	* generic/tclGet.c:	Revised Tcl_GetBoolean to no longer be a
+	wrapper around Tcl_GetBooleanFromObj (different function!).
+
+	* generic/tclObj.c:	Removed TclGetTruthValueFromObj routine that
+	was added yesterday. Revisions so that only Tcl_GetBoolean-approved
+	values get the "boolean" Tcl_ObjType. This retains the fix for [Bug
+	1187123].
+	* tests/string.test:	Test string-23.0 for Bug 1187123.
+
+	* generic/tclInt.h:	Revert most recent change.
+	* generic/tclBasic.c:
+	* generic/tclCompCmds.c:
+	* generic/tclDictObj.c:
+	* generic/tclExecute.c:
+	* tests/obj.test:
+
+2005-04-21  Don Porter	<dgp@users.sourceforge.net>
+
+	* doc/GetInt.3:	Convert argument "string" to "str" to agree with code.
+	Also clarified a few details on int and double formats.
+	* generic/tclGet.c:	Radical code simplification. Converted
+	Tcl_GetFoo() routines into wrappers around Tcl_GetFooFromObj(). Reduces
+	code duplication, and the resulting potential for inconsistency.
+
+	* generic/tclObj.c:	Several changes:
+
+	- Re-ordered error detection code so all values with trailing garbage
+	  receive a "not an integer" message instead of an "integer too large"
+	  message.
+	- Removed inactive code meant to deal with strtoul* routines that fail
+	  to parse leading signs. All of them do, and if any are detected that
+	  do not, the correct fix is replacement with compat/strtoul*.c, not a
+	  lot of special care by the callers.
+	- Tcl_GetDoubleFromObj now avoids shimmering away a "wideInt" intrep.
+	- Fixed Tcl_GetBooleanFromObj to agree with its documentation and with
+	  Tcl_GetBoolean, accepting only "0" and "1" and not other numeric
+	  strings. [Bug 1187123]
+	- Added new private routine TclGetTruthValueFromObj to perform the more
+	  permissive conversion of numeric values to boolean that is needed by
+	  the [expr] machinery.
+
+	* generic/tclInt.h (TclGetTruthValueFromObj):	New routine.
+	* generic/tclExecute.c:	Updated callers to call new routine.
+	* generic/tclBasic.c:	Updated callers to call new routine.
+	* generic/tclCompCmds.c:	Updated callers to call new routine.
+	* generic/tclDictObj.c:	Updated callers to call new routine.
+	* tests/obj.test:	Corrected bad tests that actually expected
+	values like "47" and "0xac" to be accepted as booleans.
+
+	* generic/tclLiteral.c: Disabled the code that forces some literals
+	into the "int" Tcl_ObjType during registration. We can re-enable it if
+	this change causes trouble, but it seems more sensible to let Tcl's
+	"on-demand" shimmering rule, and not try to pre-guess things.
+
+2005-04-20  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+	* doc/expr.n:
+	* doc/mathfunc.n (new file):	Revised documentation for TIP 232
+
+2005-04-20  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclGet.c (Tcl_GetInt):	Corrected error that did not
+	* generic/tclObj.c (Tcl_GetIntFromObj): permit 0x80000000 to be
+	recognized as an integer on TCL_WIDE_INT_IS_LONG systems [Bug 1090869].
+
+2005-04-20  Kevin B. Kenny  <kennykb@acm.org>
+
+	* generic/tclFileName.c: Silenced a compiler warning about '/*' within
+	a comment.
+
+2005-04-19  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c:	Added unsupported command
+	* generic/tclCmdAH.c:	[::tcl::unsupported::EncodingDirs] to permit
+	* generic/tclInt.h:	query/set of the encoding search path at
+	* generic/tclInterp.c:	the script level. Updated init.tcl to make
+	* library/init.tcl:	use of the new command. Also updated several
+	coding practices in init.tcl ("eq" for [string equal], etc.)
+
+2005-04-19  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.tcl (Initialize): Put initialization code into a proc
+	to avoid inadvertently clobbering global variables. [Bug 1185933]
+	* tests/clock.test (clock-48.1): Added regression test for the above
+	bug.
+	Thanks to Ulrich Ring for reporting this bug.
+
+2005-04-16  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/Var.c (Tcl_ArrayObjCmd - ARRAY_NAMES): fix Tcl_Obj leak. [Bug
+	1084111]
+
+2005-04-16  Zoran Vasiljevic  <vasiljevic@users.sf.net>
+
+	* generic/tclIOUtil.c: force clenaup of the interp result in
+	TclLoadFile(). Some implementations of TclpFindSymbol() will seed the
+	interp result with error message when unable to find the requested
+	symbol (this is not considered to be an error).
+
+	Set of changes correcting huge memory waste (not a leak) when a thread
+	exits. This has been introduced in 8.4.7 within an attempt to correctly
+	cleanup after ourselves when Tcl library is being unloaded with the
+	Tcl_Finalize() call.
+
+	This fixes the [Bug 1178445]
+
+	* generic/tclInt.h: added prototypes for TclpFreeAllocCache() and
+	TclFreeAllocCache()
+
+	* generic/tclThreadAlloc.c: modified TclFinalizeThreadAlloc() to
+	explicitly call TclpFreeAllocCache with the NULL-ptr as argument
+	signalling cleanup of private tsd key used only by the threading
+	allocator.
+
+	* unix/tclUnixThrd.c: fixed TclpFreeAllocCache() to recognize when
+	being called with NULL argument. This is a signal for it to clean up
+	the tsd key associated with the threading allocator.
+
+	* win/tclWinThrd.c: renamed TclWinFreeAllocCache to TclpFreeAllocCache
+	and fixed to recognize when being called with NULL argument. This is a
+	signal for it to clean up the tsd key associated with the threading
+	allocator.
+
+2005-04-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/unixInit.test:	Disabled obsolete tests and removed code
+	* tests/encoding.test:	that supported them.
+	* generic/tclInterp.c:
+
+	* library/init.tcl:	Use auto-loading to bring in Tcl Module support
+	* library/tclIndex:	as needed. This reduces startup time by
+	* library/tm.tcl:	delaying this initialization to a later time.
+
+2005-04-15  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: missing semicolons caused failure to compile
+	with TCL_COMPILE_DEBUG.
+
+2005-04-13  David Gravereaux  <davygrvy@pobox.com>
+
+	* generic/tclIO.c (Tcl_SetChannelBufferSize): Lowest size limit
+	* tests/io.test:	changed from ten bytes to one byte. Need for
+	* tests/iogt.test:	this change was proven by Ross Cartlidge
+	<rossc@cisco.com> where [read stdin 1] was grabbing 10 bytes followed
+	by starting a child process that was intended to continue reading from
+	stdin. Even with -buffersize set to one, nine chars were getting lost
+	by the buffersize over reading for the native read() caused by [read].
+
+2005-04-13  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/tclUnixInit.c (TclpGetEncodingNameFromEnvironment): Reversed
+	order of verifying candidate [encoding system] value, checking against
+	a table in memory first before calling Tcl_GetEncoding and potentially
+	scanning through the filesystem. Also ordered the table so that a
+	binary search could be used within it. Improves startup time a bit more
+	on some systems.
+
+2005-04-13  Kevin B. Kenny  <kennykb@acm.org>
+
+	* library/clock.n: Added a missing '--' on several [switch] commands to
+	improve performance of [clock format] and related operations. [FRQ
+	1182459]
+
+2005-04-13  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* doc/fcopy.n: Improved documentation on copying binary files, added an
+	example and mentioned the use of [file copy].
+	* doc/fconfigure.n: Improved documentation of -encoding binary option.
+	This is all following comments from Steve Manning <steve@manning.net>
+	on comp.lang.tcl that the current documentation was not clear.
+
+2005-04-13  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclCompile.c:Commented out the functions
+	TclPrintInstruction(), TclPrintObject() and TclPrintSource() when not
+	debugging the compiler, as they are never called in that case.
+
+2005-04-12  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInterp.c:	Corrected bad syntax of Tcl_Panic() call.
+
+	* generic/tclUtil.c (TclGetProcessGlobalValue):	More robust handling
+	of bad TclInitProcessGlobalValueProc behavior; an immediate panic
+	rather than a mysterious crash later.
+
+	* generic/tclEncoding.c:	Several changes to the way the
+	encodingFileMap cache is maintained. Previously, it was attempted to
+	keep the file map filled and up to date with changes in the encoding
+	search path. This contributed to slow startup times since it required
+	an expensive "glob" operation to fill the cache. Now the validity of
+	items in the cache are checked at the time they are used, so the cache
+	is permitted to fall out of sync with the encoding search path. Only
+	[encoding names] and Tcl_GetEncodingNames() now pay the full expense.
+	[Bug 1177363]
+
+2005-04-12  Kevin B. Kenny  <kennykb@acm.org>
+
+	* compat/strstr.c: Added default definition of NULL to accommodate
+	building on systems with badly broken headers. [Bug 1175161]
+
+2005-04-11  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* tools/tclZIC.tcl: Rewrote to take advantage of more features of Tcl
+	8.5 (on which it was dependent anyway). Also added a [package require]
+	line to formalize the relationship.
+
+2005-04-11  Kevin Kenny  <kennykb@users.sf.net>
+
+	[kennykb-numerics-branch] Merged with HEAD. Updated to libtommath 0.35.
+
+	* generic/tclBasic.c: Attempted to repeat changes that applied to
+	tclExecute.c in Miguel Sofer's commit of 2005-04-01, together with
+	(possibly) a few more uses of his new object creation macros. Also
+	plugged a memory leak in TclObjInvoke. [Bug 1180368]
+
+2005-04-10  Kevin Kenny  <kennykb@acm.org>
+
+	* library/tzdata/America/Montevideo:
+	* library/tzdata/Asia/Almaty:
+	* library/tzdata/Asia/Aqtau:
+	* library/tzdata/Asia/Aqtobe:
+	* library/tzdata/Asia/Baku:
+	* library/tzdata/Asia/Jerusalem:
+	* library/tzdata/Asia/Oral:
+	* library/tzdata/Asia/Qyzylorda:
+	* library/tzdata/Indian/Chagos:
+	* library/tzdata/Indian/Cocos:		Olson's tzdata2005h
+
+2005-04-10  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclBasic.c (TclObjInvoke):	Plug memory leak. [Bug 1180368]
+
+2005-04-09  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: fix possible leak of expansion Tcl_Objs
+
+2005-04-09  Daniel Steffen  <das@users.sourceforge.net>
+
+	* macosx/README: updated requirements for OS & developer tool versions
+	and other small fixes/cleanup.
+
+	* generic/tclListObj.c (Tcl_ListObjIndex): added missing NULL return
+	when getting index from an empty list.
+
+	* unix/tcl.m4 (Darwin): added -single_module linker flag to
+	TCL_SHLIB_LD_EXTRAS and TK_SHLIB_LD_EXTRAS.
+	* unix/configure: autoconf-2.59
+
+2005-04-08  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclInt.h (TclGetEncodingFromObj):	 New function to
+	* generic/tclEncoding.c (TclGetEncodingFromObj): retrieve a
+	Tcl_Encoding value, as well as cache it in the internal rep of a new
+	"encoding" Tcl_ObjType.
+	* generic/tclCmdAH.c (Tcl_EncodingObjCmd):	Updated to call new
+	function so that Tcl_Encoding's used by [encoding convert*] routines
+	are not freed too quickly. [Bug 1077262]
+
+2005-04-08  Donal K. Fellows  <dkf@users.sf.net>
+
+	* generic/tclCompCmds.c (TclCompileSwitchCmd): Rewritten to be able to
+	handle the other form of [switch] and generate slightly simpler (but
+	longer) code.
+
+2005-04-06  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/upvar.n, doc/unset.n, doc/tell.n, doc/tclvars.n, doc/subst.n:
+	* doc/seek.n, doc/scan.n, doc/regsub.n, doc/registry.n, doc/regexp.n:
+	* doc/read.n, doc/puts.n, doc/pkgMkIndex.n, doc/open.n, doc/lreplace.n:
+	* doc/lrange.n, doc/load.n, doc/llength.n, doc/linsert.n, doc/lindex.n:
+	* doc/lappend.n, doc/info.n, doc/gets.n, doc/format.n, doc/flush.n:
+	* doc/fileevent.n, doc/file.n, doc/fblocked.n, doc/close.n:
+	* doc/array.n, doc/Utf.3, doc/TraceVar.3, doc/StrMatch.3, doc/RegExp.3:
+	* doc/PrintDbl.3, doc/OpenTcp.3, doc/OpenFileChnl.3, doc/Object.3:
+	* doc/Notifier.3, doc/LinkVar.3, doc/IntObj.3, doc/Interp.3:
+	* doc/GetOpnFl.3, doc/GetIndex.3, doc/Eval.3, doc/CrtMathFnc.3:
+	* doc/CrtFileHdlr.3, doc/CrtCommand.3, doc/CrtChannel.3:
+	* doc/Backslash.3: Purge old .VS/.VE macro instances.
+
+	* tools/man2html2.tcl (IPmacro): Rewrote to understand what .IP really
+	is (.IP and .TP are really just two ways of doing the same thing).
+	Change below made this relevant.
+	* doc/re_syntax.n: Change some uses of .TP to .IP to work around bugs
+	in various *roff implementations. Also reworded the atom descriptions
+	slightly.
+
+2005-04-05  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c (ExprSrandFunc):  Replaced incursions into the
+	* generic/tclUtil.c (TclGetIntForIndex): intreps of numeric types with
+	simpler calls of Tcl_GetIntFromObj and Tcl_GetLongFromObj, now that
+	those routines are better behaved wrt shimmering. [Patch 1177219]
+
+2005-04-05  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclInt.h:
+	* generic/tclObj.c: Change in TclDecrRefCount and TclFreeObj, to speed
+	up the freeing of simple Tcl_Obj [Patch 1174551]
+
+2005-04-04  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: small opts in obj handling
+
+2005-04-02  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclVar.c: converted a few function calls to macros.
+
+2005-04-01  Miguel Sofer  <msofer@users.sf.net>
+
+	* doc/ListObj.3:
+	* generic/tclBasic.c:
+	* generic/tclCmdIL.c:
+	* generic/tclConfig.c:
+	* generic/tclExecute.c:
+	* generic/tclInt.decls:
+	* generic/tclInt.h:
+	* generic/tclIntDecls.h:
+	* generic/tclListObj.c:
+	* generic/tclStubInit.c:
+	* generic/tclVar.c: Changed the internal representation of lists to
+	(a) reduce the malloc/free calls at list creation (from 2 to 1), (b)
+	reduce the cost of handling empty lists (we now never create a list
+	internal rep for them), (c) allow refcounting of the list internal rep.
+	The latter permits insuring that the pointers returned by
+	Tcl_ListObjGetElements remain valid even if the object shimmers away
+	from its original list type. This is [Patch 1158008]
+
+	* generic/tclExecute.c:
+	* generic/tclInt.h:
+	* generic/tclObj.c:
+	* generic/tclStringObj.c:
+	(1) defined new internal macros for creating and setting frequently
+	used obj types (int,long, wideInt, double, string). Changed TEBC to use
+	eg 'TclNewIntObj(objPtr, i)' to avoid the function call in 'objPtr =
+	Tcl_NewIntObj(i)'
+	(2) ExecEnv now stores two Tcl_Obj* pointing to the constants "0" and
+	"1", for use by TEBC.
+	(3) slight reduction in cost of INST_START_CMD
+
+2005-03-31  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c (INST_JUMP_TRUE/FALSE): replaced "test and
+	branch" with "compute index into table"
+
+2005-03-30  Donal K. Fellows  <donal.k.fellows@manchester.ac.uk>
+
+	* doc/FileSystem.3: Defined loadHandle argument. [Bug 1172401]
+
+2005-03-29  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/tcl.m4, win/configure: do not require cygpath in macros to allow
+	msys alone as an alternative.
+
+2005-03-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCompile.h:	Move the TclInterpReady() declaration from
+	* generic/tclInt.h:	tclCompile.h to tclInt.h. Should have been done
+	as part of the 1115904 bug fix on 2005-03-18.
+
+	* generic/tclThreadTest.c:	Stop providing the phony package
+	"Thread 1.0" when the [::testthread] command is defined. It's never
+	used by anything, and conflicts with loading the real "Thread" package.
+
+2005-03-18  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclCompCmds.c (TclCompileIncrCmd):	Corrected checks for
+	immediate operand usage to permit leading space and sign characters.
+	Restores more efficient bytecode for [incr x -1] that got lost in the
+	CONST string reforms of Tcl 8.4. [Bug 1165671]
+
+	* generic/tclBasic.c (Tcl_EvalEx):	Restored recursion limit
+	* generic/tclParse.c (TclSubstTokens):	testing in nested command
+	* tests/basic.test (basic-46.4):	substitutions within direct
+	* tests/parse.test (parse-19.*):	script evaluation (Tcl_EvalEx)
+	that got lost in the parser reforms of Tcl 8.1. Added tests for correct
+	behavior. [Bug 1115904]
+
+2005-03-15  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c:
+	* win/tclWinFile.c:
+	* tests/winFCMd.test: fix to 'file pathtype' and 'file norm' failures
+	on reserved filenames like 'COM1:', etc.
+
+2005-03-15  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* unix/tcl.m4:	  Updated the OpenBSD configuration and regenerated
+	* unix/configure: the configure script.
+
+2005-03-15  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Merged with HEAD.
+
+	* generic/tclBasic.c (many):
+	* generic/tclCompExpr.c (CompileMathFuncCall):
+	* generic/tclCompile.h:
+	* generic/tclExecute.c (many):
+	* generic/tclParseExpr.c (ParsePrimaryExpr):
+	* tests/compExpr-old.test:
+	* tests/compExpr.test:
+	* tests/compile.test:
+	* tests/expr-old.test:
+	* tests/expr.test:
+	* tests/for.test:
+	* tests/parseExpr.test: Initial implementation of TIP #232.
+
+	* generic/tclObj.c (Tcl_DbNewBignumObj): Fixed typo that broke
+	--enable-symbols=mem build
+	* tests/binary.test (binary-40.3, binary-40.6): Corrected tests to
+	allow NaN(7ffffffffffff).
+
+2005-03-14  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: fixed INST_PUSH1's debugging code (wrong obj
+	ref passed to TRACE_WITH_OBJ).
+
+2005-03-14  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclCompile.c: fixed INST_RETURN's stack effect in
+	tclInstructionTable (-1 instead of -2)
+
+2005-03-10  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclCompCmds.c: removed debugging line
+
+2005-03-10  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclTrace.c (TclCheckInterpTraces):	Corrected mistaken cast
+	of ClientData to (TraceCommandInfo *) when not warranted. Thanks to
+	Yuri Victorovich for the report. [Bug 1153871]
+	* generic/tcl.h:	Moved flag values TCL_TRACE_ENTER_EXEC and
+	* generic/tclInt.h:	TCL_TRACE_LEAVE_EXEC from public interface into
+	private. Should be used only by internal workings of execution traces.
+
+2005-03-09  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Merged from HEAD.
+
+	* doc/PrintDbl.3:
+	* doc/tclVars.n: Documented new semantics for tcl_precision.
+	* generic/tclExecute.c (Tcl_ExecuteByteCode): Removed the check for
+	division-by-zero on IEEE-754 machines.
+	* generic/tclUtil.c (Tcl_PrintDouble): Corrected bug where numbers in
+	the range [1e-4 .. 1.) were printed incorrectly.
+	* tests/compExpr-old.test (compExpr-old-11.13): Revised test case for
+	division by zero.
+	* tests/expr-old.test (expr-34.11, expr-34.12): Revised test cases for
+	overflow in pow() to deal with infinities.
+	* tests/expr.test (expr-11.13, expr-29.1, expr-29.2): Revised test case
+	for division by zero and for underflow on input conversions.
+	* tests/parseExpr.test (parseExpr-16.11): Revised test case for
+	overflow on input conversion.
+	* tests/string.test (string-6.38 deleted): Removed test case for
+	underflow on input conversion, which is no longer an error.
+	* tests/util.test (util-10.*): Added test case for the bug in tclUtil.c
+
+2005-03-08  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/makefile.vc: clarify necessary defined vars that can come from
+	MSVC or the Platform SDK.
+
+2005-03-07  Donal K. Fellows  <dkf@users.sf.net>
+
+	* doc/string.n: Minor typo. [Bug 1158247]
+
+2005-03-07  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclExecute.c: new peephole optimisation for INST_PUSH1; fixed
+	the peephole opt in INST_POP so that it is not used when
+	TCL_COMPILE_DEBUG is defined.
+
+2005-03-04  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclCmdMZ.c: Changed [scan] to treat out-of-range floating
+	point values as infinities and zeroes.
+	* generic/tclExecute.c: Changed [expr] to be permissive about
+	infinities, allowing them to propagate.
+	* generic/tclGet.c: Changed Tcl_GetDouble to be permissive about
+	over/underflow.
+	* generic/tclObj.c: Changed SetDoubleFromAny to be permissive about
+	over/underflow.
+	* generic/tclParseExpr.c: Made [expr] permissive about input numbers
+	out of range.
+
+2005-03-03  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclInt.h:
+	* generic/tclStrToD.c (Tcl_DoubleDigits, TclFormatNaN):
+	* generic/tclUtil.c (Tcl_PrintDouble): Changed the signature of
+	TclDoubleDigits so that it accepts a pointer to the signum of the
+	argument, and returns the signum via that pointer. Added very hacky
+	code to handle IEEE signed zeroes in Tcl_DoubleDigits. (It can't be
+	done other than as a hack until C9x; C89 simply doesn't deal with the
+	concept of -0.0). Added output conversion of tagged NaN values.
+	* generic/tclBinary.c (FormatNumber): Changed to allow [binary format]
+	to handle NaN.
+	* tests/binary.test (binary-60.1): Added a quick-n-dirty test to make
+	sure that NaN's can be scanned and formatted.
+	* generic/tclParseExpr.c (GetLexeme, ParseMaxDoubleLength): Modified so
+	that tagged NaN (e.g., NaN(DEADBEEF)) can be recognized.
+
+2005-03-02  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Merged with HEAD as of 2005-02-23.
+
+	* generic/tclExecute.c: Broadened test for NaN to work on Windows.
+	* generic/tclInt.h:
+	* generic/tclStrToD.c (Tcl_DoubleDigits):
+	* generic/tclUtil.c (Tcl_PrintDouble, TclPrecTraceProc): Added
+	Tcl_DoubleDigits to format 'double' numbers with the minimum number of
+	significant digits to yield correct rounding. Modified tcl_precision
+	to accept 0 as a precision (meaning "minimum digits"), and made 0 the
+	default. [TIP #132]
+	* generic/tclObj.c: Made NaN's throw an error in Tcl_GetDoubleFromObj.
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/makefile.vc: Added libtommath/bn_mp_init_set.c to the build.
+	* libtommath/tommath.h (mp_iseven): Fixed a bug that caused zero to
+	test 'odd'.
+	* generic/tommath.h: Regenerated.
+	* tests/binary.test:
+	* tests/expr-old.test:
+	* tests/expr.test:
+	* tests/scan.test: Corrected a number of tests that depended on
+	tcl_precision, and removed the {eformat} condition from tests that no
+	longer require it.
+	* tests/util.test: Corrected a number of tests that depended on
+	tcl_precision, and removed the {eformat} condition from tests that no
+	longer require it. Added a series of tests for correct rounding in
+	Tcl_PrintDouble. [TIP #132].
+
+2005-03-01  David N. Welton  <davidw@dedasys.com>
+
+	* doc/CrtSlave.3: Changed to Tcl_Object to Tcl_Obj in the man page.
+
+2005-02-24  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/tcltest/tcltest.tcl:	Better use of [glob -types] to avoid
+	* tests/tcltest.test:	failed attempts to [source] a directory, and
+	similar matters. Thanks to "mpettigr". [Bug 1119798]
+
+	* library/tcltest/pkgIndex.tcl: Bump to tcltest 2.2.8
+	* unix/Makefile.in:
+	* win/Makefile.in:
+
+2005-02-23  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/CrtChannel.3 (THREADACTIONPROC): Formatting fix. [Bug 1149605]
+
+2005-02-17  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* win/tclWinFCmd.c (TraverseWinTree): use wcslen on wchar, not
+	Tcl_UniCharLen.
+
+2005-02-16  Miguel Sofer  <msofer@users.sf.net>
+
+	* doc/variable.n: fix for [Bug 1124160], variables are detected by
+	[info vars] but not by [info locals].
+
+2005-02-11  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/Makefile.in: remove SHLIB_LD_FLAGS (only for AIX, inlined into
+	* unix/tcl.m4:	    SHLIB_LD). Combine AIX-* and AIX-5 branches in
+	* unix/configure:   SC_CONFIG_CFLAGS. Correct gcc builds for AIX-4+
+	and HP-UX-11. autoconf-2.59 gen'd.
+
+2005-02-11  Miguel Sofer  <msofer@users.sf.net>
+
+	* tests/basic.test (basic-26.3): new test
+
+2005-02-10  Miguel Sofer  <msofer@users.sf.net>
+
+	* generic/tclBasic.c (Tcl_EvalObjEx):
+	* tests/basic.test (basic-26.2): preserve the arguments passed to TEOV
+	in the pure-list branch, in case the list shimmers away. Fix for [Bug
+	1119369], reported by Peter MacDonald.
+
+2005-02-10  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c: fix for test failures introduced on 2005-01-17
+	[Bug 1119092]
+
+2005-02-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/binary.n: Made the documentation of sign bit masking and [binary
+	scan] consistent. [Bug 1117017]
+
+2005-02-08  David N. Welton  <davidw@dedasys.com>
+
+	* doc/CrtChannel.3: Typo: return->returns.
+
+2005-02-06  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclStrToD.c (TclStrToD, SafeLdExp): Added code to manage the
+	FPU precision on gcc+x86. Enabled fast conversion of floats with small
+	exponents now that precision is correct.
+	* tests/expr.test: Corrected test for the smallest representible value
+	to the right IEEE values.
+
+2005-02-06  David N. Welton  <davidw@dedasys.com>
+
+	* doc/Thread.3: One-word grammar fix.
+
+2005-02-05  David N. Welton  <davidw@dedasys.com>
+
+	* doc/Thread.3: Fixed sentence describing flags for Tcl_CreateThread.
+
+	* doc/FileSystem.3: Cleaned up typo in Tcl_FSNewNativePath
+	documentation.
+
+	* generic/tclPathObj.c: Cleaned up typo in comment.
+
+2005-02-03  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+
+	* generic/tclStrToD.c (TclStrToD, RefineResult, SafeLdExp): Added code
+	to ensure that 'ldexp' is never called with a value that will underflow
+	* tests/expr.test: Added tests for the smallest representible value,
+	and rounding between it and zero. (The tests reflect current
+	behaviour; plan is to change the specification of Tcl so that input
+	conversion of doubles underflows silently.)
+
+2005-02-02  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* generic/tclProc.c (TclInitCompiledLocals): Add check for type of the
+	framePtr->procPtr->bodyPtr passed to TclInitCompiledLocals and panic if
+	it is not the correct type. If the body of the proc is not of the
+	compiled byte code type then the code will crash. This was discovered
+	while tracking down a crash in Itcl, that crash is fixed by Itcl patch
+	1115085.
+
+2005-02-01  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]  Merged with HEAD as of today.
+
+	* generic/tclInt.decls: Changed numbers of new stubs to resolve a
+	conflict.
+	* generic/tclInt.h: Added new TclStrToD routine that replaces the
+	native 'strtod' throughout Tcl.
+	* generic/tclCmdMZ (Tcl_StringObjCmd):
+	* generic/tclGet.c (Tcl_GetDouble):
+	* generic/tclObj.c (SetBooleanFromAny, SetDoubleFromAny):
+	* generic/tclParseExpr.c (GetLexeme):
+	* generic/tclScan.c (Tcl_ScanObjCmd): Replaced all uses of the native
+	'strtod' with a TclStrToD routine that performs correct rounding and
+	handles denormals.
+	* generic/tclStrToD.c: (new file)
+	New scanning function for extracting 'double' from a string that rounds
+	correctly, and handles denormals and infinities.
+	* unix/Makefile.in:
+	* win/Makefile.in:
+	* win/makefile.vc:
+	Added tclStrToD.c and the tommath routines that support it.
+
+	These changes represent a partial implementation of TIP #132. Output
+	conversion of floating point numbers, and proper handling of infinities
+	within expressions, still need to be addressed.
+
+2005-02-01  Don Porter	<dgp@users.sourceforge.net>
+
+	* generic/tclExecute.c (TclCompEvalObj): Removed stray statement left
+	behind in prior code reorganization.
+
+2005-01-31  Don Porter	<dgp@users.sourceforge.net>
+
+	* unix/configure:	autoconf-2.57
+
+2005-01-30  Joe English  <jenglish@users.sourceforge.net>
+
+	* unix/configure.in: Restored two double-evals that were removed in the
+	DBGX purge; these are still needed on some platforms to account for
+	TCL_TRIM_DOTS. [Bug 1112654]
+
+	* unix/configure: NOT REGENERATED: only have autoconf 2.59 here, need
+	to find someone with autoconf 2.57.
+
+2005-01-28  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* unix/configure, unix/tcl.m4: add solaris 64-bit gcc build support.
+	[Bug 1021871]
+
+2005-01-28  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/expr-old.test (expr-old-37.2): Added test for [Bug 1109484]
+
+2005-01-27  Jeff Hobbs	<jeffh@ActiveState.com>
+
+	* generic/tclBasic.c (Tcl_ExprBoolean, Tcl_ExprDouble)
+	(Tcl_ExprLong): Fix to recognize Tcl_WideInt type. [Bug 1109484]
+
+2005-01-26  Andreas Kupries  <andreask@activestate.com>
+
+	TIP#218 IMPLEMENTATION
+
+	* generic/tclDecls.h:	Regenerated from tcl.decls.
+	* generic/tclStubInit.c:
+
+	* doc/CrtChannel.3:	Documentation of extended API,
+	* generic/tcl.decls:	extended testsuite, and
+	* generic/tcl.h:	implementation. Removal of old
+	* generic/tclIO.c:	driver-specific TclpCut/Splice
+	* generic/tclInt.h:	functions. Replaced with generic
+	* tests/io.test:	thread-action calls through the
+	* unix/tclUnixChan.c:	new hooks. Update of all builtin
+	* unix/tclUnixPipe.c:	channel drivers to version 4.
+	* unix/tclUnixSock.c:	Windows drivers extended to
+	* win/tclWinChan.c:	manage thread state in a thread
+	* win/tclWinConsole.c:	action handler.
+	* win/tclWinPipe.c:
+	* win/tclWinSerial.c:
+	* win/tclWinSock.c:
+
+2005-01-25  Don Porter	<dgp@users.sourceforge.net>
+
+	* library/auto.tcl:	Updated [auto_reset] to clear auto-loaded
+	commands in namespaces other than :: and to clear auto-loaded commands
+	that do not happen to be procs. [Bug 1101670]
+	***POTENTIAL INCOMPATIBILITY***
+
+2005-01-25  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tcl.m4 (Darwin): fixed bug with static build linking to dynamic
+	library in /usr/lib etc instead of linking to static library earlier in
+	search path. [Bug 956908] Removed obsolete references to Rhapsody.
+	* unix/configure: autoconf-2.57
+
+2005-01-21  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclStubInit.c: Regenerated the stubs support code from the
+	* generic/tclDecls.h:	 modified tcl.decls (TIP #233, see below).
+
+	* doc/GetTime.3:       Implemented TIP #233, i.e. the
+	* generic/tcl.decls:   'Virtualization of Tcl's Sense of Time'.
+	* generic/tcl.h:       Declared, implemented, and documented the
+	* generic/tclInt.h:    specified new API functions. Moved the
+	* unix/tclUnixEvent.c: native (OS) access to time information
+	* unix/tclUnixNotfy.c: into standard handler functions. Inserted
+	* unix/tclUnixTime.c:  hooks calling on the handlers where native
+	* win/tclWinNotify.c:  access was done before, and where scaling
+	* win/tclWinTime.c:    between domains (real/virtual) is required.
+
+2005-01-21  Andreas Kupries  <andreask@activestate.com>
+
+	* generic/tclThread.c: Typo police. Fixed some nits
+	* generic/tclCmdAH.c:  in header comments of functions.
+	* generic/tclBasic.c:  (Missing --).
+	* generic/tclFileName.c:
+
+2005-01-21  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/FileSystem.3: Add missing ARGUMENTS section definitions for
+	arguments to Tcl_FSLink. [Bug 1106272]
+
+2005-01-21  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch]
+
+	* unix/Makefile.in: Updated Makefile to build libtommath on Unix as
+	well as Windows. [Bug 1106865]
+
+	* generic/tclTestObj.c (TestbignumobjCmd): Silenced a compiler warning
+	about a mismatched 'const'.
+
+2005-01-20  Kevin B. Kenny  <kennykb@acm.org>
+
+	[kennykb-numerics-branch] Development checkpoint.
+
+	* compat/strtoll.c:	Reverted to HEAD.
+	* compat/strtoull.c:
+	* doc/Ensemble.3:
+	* generic/tclBasic.c:
+	* generic/tclCmdIL.c:
+	* generic/tclNamesp.c:
+	* generic/tclPathObj.c:
+	* generic/tclPort.h:
+	* unix/configure:
+	* unix/configure.in:
+	* unix/tcl.m4:
+	* win/configure:
+	* win/configure.in:
+	* win/rules.vc:
+	* win/tcl.m4:
+
+	* generic/tcl.h: Added declarations for bignum types, and for a
+	'bignumValue' in the Tcl_Obj structure.
+	* generic/tclInt.h: Added declarations of interface procedures for
+	memory allocation in libtommath.
+
+	* generic/tcl.decls: Added new interface to bignum objects.
+	* generic/tclInt.decls: Added internal stubs for bignum routines used
+	by the test code in tclTestObj.c.
+
+	* generic/tclDecls/h: Regen.
+	* generic/tclIntDecls.h:
+	* generic/tclStubInit.h:
+
+	* tools/fix_tommath_h.tcl: (New file) Script to edit
+	libtommath/tommath.h and produce generic/tommath.h so that storage
+	classes, allocation routines, and data types conform to Tcl's
+	conventions.
+	* generic/tommath.h: (New file) Generated by the above.
+
+	* generic/tclTomMath.h: (New file) Additional declarations to be
+	included in tommath.h when building Tcl.
+
+	* generic/tclTomMathInterface.c: (New file) Small 'glue' routines
+	adapting tommath's API to Tcl.
+
+	* libtommath/bn_fast_s_mp_mul_digs.c:
+	* libtommath/bn_mp_mul_d.c:
+	* libtommath/bn_mp_read_radix.c:
+	* libtommath/tommath.h: Applied suggested changes from Tom St Denis
+	that correct an off-by-one error in single-digit multiplication
+	(leading to a pointer smash if uncorrected) and change the string
+	argument to 'mp_read_radix' from 'char*' to 'const char*'.
+
+	* libtommath/bn_mp_radix_size.c: Local patch to ensure that sufficient
+	memory is requested even if the number has a single digit.
+
+	* libtommath/bn_mp_read_radix.c: Local patch to return MP_VAL if the
+	input string contains an invalid character.
+
+	* generic/tclObj.c: Added accessor functions for bignums.
+	* generic/tclTestObj.c: Added a 'testbignumobj' command to exercise the
+	accessor functions for bignums.
+
+	* win/Makefile.in: Added rules for making libtommath.
+
+2005-01-19  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	TIP#235 IMPLEMENTATION
+
+	* doc/Ensemble.3: Documentation for the new public API.
+	* generic/tclNamesp.c (Tcl_CreateEnsemble,...): Rename of
+	* generic/tcl.decls:		existing API into TIPped form.
+
+2005-01-19  Mo DeJong  <mdejong@users.sourceforge.net>
+
+	* win/tclWinChan.c (FileCloseProc): Invoke TclpCutFileChannel() to
+	remove a FileInfo from the thread local list before deallocating it.
+	This should have been done via an earlier call to Tcl_CutChannel, but I
+	was running into a crash in the next call to Tcl_CutChannel during the
+	I/O finalization stage.
+
+2005-01-18  Kevin Kenny  <kennykb@acm.org>
+
+	* library/tzdata/GMT+0:
+	* library/tzdata/GMT-0:
+	* library/tzdata/GMT0:
+	* library/tzdata/Greenwich:
+	* library/tzdata/Navajo:
+	* library/tzdata/Universal:
+	* library/tzdata/Zulu:
+	* library/tzdata/America/Asuncion:
+	* library/tzdata/America/Rosario:
+	* library/tzdata/Asia/Jerusalem:
+	* library/tzdata/Brazil/Acre:
+	Routine update per Olson's tzdata2005c. Removed links to links
+	(Greenwich in several aliases; Navajo; Acre). Updated Paraguayan DST
+	rules and "best guess" at this year's Israeli rules.
+
+2005-01-17  Vince Darley  <vincentdarley@users.sourceforge.net>
+
+	* generic/tclFileName.c: fix for glob failure on Windows shares [Bug
+	1100542].
+
+	* doc/pkgMkIndex.n: added documentation that 'pkg_mkIndex -lazy' is not
+	a good idea. [Bug 1101678]
+
+2005-01-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* tests/compile.test (compile-17.1): Document known issue with binding
+	time of compiled command interpretations in [expr].
+
+	* generic/tclIOUtil.c (TclFSFileAttrIndex): New helper function so that
+	we don't need to hard-code attribute indexes. [Bug 1100671]
+
+2005-01-13  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/string.n: Removed the term 'set' from the documentation of the
+	[string trim] commands, as it caused confusion.
+
+2005-01-12  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tcl.m4 (SC_PATH_{TCL,TK}CONFIG): Added code to detect the case
+	when the --with-tcl/--with-tk arguments point to the config scripts
+	themselves and not their directory. If this is the case, they now
+	complain but keep working. [FRQ 951247]
+	* unix/configure:	autoconf-2.57
+
+2005-01-10  Joe English  <jenglish@users.sourceforge.net>
+
+	* unix/Makefile.in, unix/configure.in, unix/tcl.m4,
+	* unix/tclConfig.sh.in, unix/dltest/Makefile.in:
+	Remove ${DBGX}, ${TCL_DBGX} from Tcl build system [Patch 1081595].
+	* unix/configure: regenerated
+
+2005-01-10  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* unix/tclUnixFCmd.c (TclUnixCopyFile): Convert u_int to unsigned to
+	make clashes with types in standard C headers less of a problem. [Bug
+	1098829]
+
+2005-01-09  Joe English  <jenglish@users.sourceforge.net>
+
+	* unix/tclUnixThrd.c, unix/tclUnixPort.h: Remove readdir_r() and
+	related #ifdeffery (see [Bug 1095909]).
+	* unix/tcl.m4, unix/tclConfig.h.in: Don't check for HAVE_READDIR_R.
+	* unix/configure: Regenerated.
+
+2005-01-06  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* library/http/http.tcl (http::mapReply): Significant performance
+	enhancement by using [string map] instead of [regsub]/[subst], and
+	update version requirement to Tcl8.4. [Bug 1020491]
+
+2005-01-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* doc/lsearch.n, doc/re_syntax.n: Convert to other form of emacs mode
+	control comment to prevent problems with old versions of man. [Bug
+	1085127]
+
+2005-01-05  Pat Thoyts	<patthoyts@users.sourceforge.net>
+
+	* tests/winDde.test: Fixed broken test result.
+
+2005-01-05  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
+
+	* generic/tclInt.h, generic/tclPort.h: Move the #include of tclConfig.h
+	*first* before any reference to tcl.h so that the build configuration
+	is loaded before the first reference to any system headers. Issue
+	reported by Art Haas on tcl-core.
+
+2005-01-04  Don Porter	<dgp@users.sourceforge.net>
+
+	* tests/fCmd.test (fCmd-18.10):	Added notNetworkFilesystem constraint.
+	[Bug 456665]
+
+	******************************************************************
+	*** CHANGELOG ENTRIES FOR 2004 IN "ChangeLog.2004"	       ***
+	*** CHANGELOG ENTRIES FOR 2003 IN "ChangeLog.2003"	       ***
+	*** CHANGELOG ENTRIES FOR 2002 IN "ChangeLog.2002"	       ***
+	*** CHANGELOG ENTRIES FOR 2001 IN "ChangeLog.2001"	       ***
+	*** CHANGELOG ENTRIES FOR 2000 IN "ChangeLog.2000"	       ***
+	*** CHANGELOG ENTRIES FOR 1999 AND EARLIER IN "ChangeLog.1999" ***
+	******************************************************************
diff --git a/README b/README
index 181b0a1..905ac37 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
 README:  Tcl
-    This is the Tcl 8.4.19 source distribution.
+    This is the Tcl 8.5.13 source distribution.
 	http://tcl.sourceforge.net/
     You can get any source release of Tcl from the file distributions
     link at the above URL.
@@ -22,7 +22,7 @@ Contents
 Tcl provides a powerful platform for creating integration applications that
 tie together diverse applications, protocols, devices, and frameworks.
 When paired with the Tk toolkit, Tcl provides the fastest and most powerful
-way to create GUI applications that run on PCs, Unix, and the Macintosh.
+way to create GUI applications that run on PCs, Unix, and Mac OS X.
 Tcl can also be used for a variety of web-related tasks and for creating
 powerful command languages for applications.
 
@@ -45,7 +45,7 @@ and selling it either in whole or in part.  See the file
 
 Extensive documentation is available at our website.
 The home page for this release, including new features, is
-	http://www.tcl.tk/software/tcltk/8.4.html
+	http://www.tcl.tk/software/tcltk/8.5.html
 
 Detailed release notes can be found at the file distributions page
 by clicking on the relevant version.
@@ -57,9 +57,9 @@ Information about Tcl itself can be found at
 There have been many Tcl books on the market.  Many are mentioned in the Wiki:
 	http://wiki.tcl.tk/_/ref?N=25206
 
-To view the complete set of reference manual entries for Tcl 8.4 online,
+To view the complete set of reference manual entries for Tcl 8.5 online,
 visit the URL:
-	http://www.tcl.tk/man/tcl8.4/
+	http://www.tcl.tk/man/tcl8.5/
 
 2a. Unix Documentation
 ----------------------
@@ -118,8 +118,8 @@ information about Tcl, Tk, and related applications.  The newsgroup is a
 great place to ask general information questions.  For bug reports, please
 see the "Support and bug fixes" section below.
 
-6. The Tcler's Wiki
--------------------
+6. Tcl'ers Wiki
+---------------
 
 A Wiki-based open community site covering all aspects of Tcl/Tk is at:
 
@@ -167,7 +167,7 @@ The Tcl community is too large for us to provide much individual support
 for users.  If you need help we suggest that you post questions to
 comp.lang.tcl.  We read the newsgroup and will attempt to answer esoteric
 questions for which no one else is likely to know the answer.  In addition,
-see the following page on the Wiki for links to other organizations that offer
+see the following Web site for links to other organizations that offer
 Tcl/Tk training:
 
 	http://wiki.tcl.tk/training
diff --git a/changes b/changes
index f973758..020e033 100644
--- a/changes
+++ b/changes
@@ -126,7 +126,7 @@ Tcl_Eval.
 that came after version 3.3 was released.
 
 40. 5/17/91 Changed tests to conform to Mary Ann May-Pumphrey's approach.
- 
+
 41. 5/23/91 Massive revision to Tcl parser to simplify the implementation
 of string and floating-point support in expressions.  Newlines inside
 [] are now treated as command separators rather than word separators
@@ -260,7 +260,7 @@ argument (before file name), for consistency with other Tcl commands.
 *** POTENTIAL INCOMPATIBILITY ***
 
 72. 8/20/91 Changed format of information in $errorInfo variable:
-comments such as 
+comments such as
     ("while" body line 1)
 are now on separate lines from commands being executed.
 *** POTENTIAL INCOMPATIBILITY ***
@@ -1192,7 +1192,7 @@ under some dynamic loading systems (e.g. SunOS 4.1 and Windows).
 6/8/95 (feature change) Modified interface to Tcl_Main to pass in the
 address of the application-specific initialization procedure.
 Tcl_AppInit is no longer hardwired into Tcl_Main.  This is needed
-in order to make Tcl a shared library. 
+in order to make Tcl a shared library.
 
 6/8/95 (feature change) Modified Makefile so that the installed versions
 of tclsh and libtcl.a have version number in them (e.g. tclsh7.4 and
@@ -1616,7 +1616,7 @@ file name.  Under Windows '95, this is incorrectly interpreted as a UNC
 path.  They delays came from the network timeouts needed to determine that
 the file name was invalid.  Tcl_TranslateFileName now suppresses duplicate
 slashes that aren't at the beginning of the file name. (SS)
-				     
+
 1/25/96 (bug fix) Changed exec and open to create children so they are
 attached to the application's console if it exists. (SS)
 
@@ -2254,21 +2254,21 @@ version of Tcl.  It's quite a bit faster than MetroWerk's version. (RJ)
 8/26/96 (documentation update) Removed old change bars (for all changes
 in Tcl 7.5 and earlier releases) from manual entries. (JO)
 
-8/27/96 (enhancement) The exec and open commands behave better and work in 
-more situations under Windows NT and Windows 95.  Documentation describes 
+8/27/96 (enhancement) The exec and open commands behave better and work in
+more situations under Windows NT and Windows 95.  Documentation describes
 what is still lacking. (CS)
 
 8/27/96 (enhancement) The Windows makefiles will now compile even if the
 compiler is not in the path and/or the compiler's environment variables
-have not been set up. (CS) 
+have not been set up. (CS)
 
-8/27/96 (configuration improvement) The Windows resource files are 
+8/27/96 (configuration improvement) The Windows resource files are
 automatically updated when the version/patch level changes.  The header file
 now has a comment that reminds the user which other files must be manually
 updated when the version/patch level changes. (CS)
 
 8/28/96 (new feature) Added file manipulation features (copy, rename, delete,
-mkdir) that are supported on all platforms. They are implemented as 
+mkdir) that are supported on all platforms. They are implemented as
 subcommands to the "file" command. See the documentation for the "file"
 command for more information. (JH)
 
@@ -2371,7 +2371,7 @@ the Tcl script in the fileevent wasn't closing the socket immediately. (JL)
       package goes in a separate subdirectory of a directory in
       $tcl_pkgPath).  These directories are included in auto_path by
       default.
-    - Changed the package auto-loader to look for pkgIndex.tcl files 
+    - Changed the package auto-loader to look for pkgIndex.tcl files
       not only in the auto_path directories but also in their immediate
       children.  This should make it easier to install and uninstall
       packages (don't have to change auto_path or merge pkgIndex.tcl
@@ -2621,7 +2621,7 @@ lookups of keyword arguments. (JO)
 
 1/12/97 (new feature) Serial IO channel drivers for Windows and Unix,
 available by using Tcl open command to open pseudo-files like "com1:" or
-"/dev/ttya".  New option to Tcl fconfigure command for serial files:  
+"/dev/ttya".  New option to Tcl fconfigure command for serial files:
 "-mode baud,parity,data,stop" to specify baud rate, parity, data bits, and
 stop bits.  Serial IO is not yet available on Mac.
 
@@ -2701,7 +2701,7 @@ to Feb 31.)  The code now will return the last valid day of the
 month in these situations.  Thanks to Hume Smith for sending in
 this bug fix.  (RJ)
 
-2/10/97 (feature change) Eliminated Tcl_StringObjAppend and 
+2/10/97 (feature change) Eliminated Tcl_StringObjAppend and
 Tcl_StringObjAppendObj procedures, replaced them with Tcl_AppendToObj
 and Tcl_AppendStringsToObj procedures.  Added new procedure
 Tcl_SetObjLength. (JO)
@@ -3068,7 +3068,7 @@ compilation errors from "invoked from within" to "while compiling". (BL)
       modified the interpreter result even if there was no error.
     - The argument parsing procedure used by several compile procedures
       always treated "]" as end of a command: e.g., "set a ]" would fail.
-    - Changed errorInfo traceback message for compilation errors from 
+    - Changed errorInfo traceback message for compilation errors from
       "invoked from within" to "while compiling".
     - Problem initializing Tcl object managers during interpreter creation.
     - Added check and error message if formal parameter to a procedure is
@@ -3143,7 +3143,7 @@ is leaked to safe interps. Error message fixes for interp sub commands.
 Likewise changes in safealias.tcl; tcl_safeCreateInterp can now be called
 without argument to generate the slave name (like in interp create). (DL)
 
-7/10/97 (bug fixes) Bytecode compiler now generates more detailed 
+7/10/97 (bug fixes) Bytecode compiler now generates more detailed
 command location information: subcommands as well as commands now have
 location information. This means command trace procedures now get the
 correct source string for each command in their command parameter. (BL)
@@ -3181,7 +3181,7 @@ malloc and free. (SS)
 sourcing/loading (see safe.n) to hide pathnames, use virtual
 paths tokens instead, improved security in several respects and made it
 more tunable. Multi level interp loading can work too now. Package auto
-loading now works in safe interps as long as the package directory is in 
+loading now works in safe interps as long as the package directory is in
 the auto_path (no deep crawling allowed in safe interps). (DL)
 *** POTENTIAL INCOMPATIBILITY with previous alpha and beta releases ***
 
@@ -3209,7 +3209,7 @@ exists" command returns 0 for them. (BL)
 7/29/97 (feature change)  Changed the http package to use the ::http
 namespace. http_get renamed to http::geturl, http_config renamed to
 http::config, http_formatQuery renamed to http::formatQuery.
-It now provides the 2.0 version of the package.  
+It now provides the 2.0 version of the package.
 The 1.0 version is still available with the old names.
 *** POTENTIAL INCOMPATIBILITY with Tcl 8.0b2 but not with Tcl 7.6 ***
 
@@ -3273,7 +3273,7 @@ except that the default precision is 12 instead of 6. (JO)
 ----------------- Released 8.0, 8/18/97 -----------------------
 
 8/19/97 (bug fix) Minimal fix for glob -nocomplain bugs:
-"glob -nocomplain unreadableDir/*" was generating an anonymous 
+"glob -nocomplain unreadableDir/*" was generating an anonymous
 error. More in depth fixes will come with 8.1. (DL).
 
 8/20/97 (bug fix) Removed check for FLT_MIN in binary command so
@@ -3318,7 +3318,7 @@ does not prevent stack overflow by multi-interps recursion or aliasing} (DL)
 9/11/97 (bug fix) An uninitialized variable in Tcl_WaitPid caused
 pipes to fail to report eof properly under Windows. (SS)
 
-9/12/97 (bug fix) "exec" was misidentifying some DOS executables as not 
+9/12/97 (bug fix) "exec" was misidentifying some DOS executables as not
 executable. (CCS)
 
 9/14/97 (bug fix) Was using the wrong structure in sizeof operation in
@@ -3342,7 +3342,7 @@ Roseman for the pointer on the fix.)  (RJ)
 cause the compare function to run off the end of an array if the
 number only contained 0's. (Thanks to Greg Couch for the report.) (RJ)
 
-9/18/97 (bug fix) TclFinalizeEnvironment was not cleaning up 
+9/18/97 (bug fix) TclFinalizeEnvironment was not cleaning up
 properly. (DL, JI)
 
 9/18/97 (bug fix) Fixed long-standing bug where an "array get" command
@@ -3378,9 +3378,9 @@ Now you can "join $list \0" for instance. (DL)
 non-existent directory, exec would fail when trying to create its temporary
 files. (CCS)
 
-10/9/97 (bug fix) Under mac and windows, "info hostname" would crash if 
+10/9/97 (bug fix) Under mac and windows, "info hostname" would crash if
 sockets were installed but the hostname could not be determined anyhow.
-Tcl_GetHostName() was returning NULL when it should have been returning 
+Tcl_GetHostName() was returning NULL when it should have been returning
 an empty string. (CCS)
 
 10/10/97 (bug fix) "file attribute /" returned error on windows. (CCS)
@@ -3468,7 +3468,7 @@ around to be really closed in this case. (JL)
 12/8/97 (bug fix) Need to protect the channel in a fileevent so that it
 is not deleted before the fileevent handler returns. (CS, JL)
 
-12/18/97 (bug fix) In the opt argument parsing package: if the description 
+12/18/97 (bug fix) In the opt argument parsing package: if the description
 had only flags, the "too many arguments" case was not detected. The default
 value was not used for the special "args" ending argument. (DL)
 
@@ -3511,7 +3511,7 @@ that could lead to a crash. (SS)
 non-local variable references. (SS)
 
 6/25/98 (new features) Added name resolution hooks to support [incr Tcl].
-There are new internal Tcl_*Resolver* APIs to add, query and remove the hooks. 
+There are new internal Tcl_*Resolver* APIs to add, query and remove the hooks.
 With this changes it should be possible to dynamically load [incr Tcl]
 as an extension. (MM)
 
@@ -3539,7 +3539,7 @@ TclAccessInsertProc, TclStatInsertProc, & TclOpenFileChannelInsertProc
 insert pointers to such routines; TclAccessDeleteProc, TclStatDeleteProc,
 & TclOpenFileChannelDeleteProc delete pointers to such routines.  See
 the file generic/tclIOUtils.c for more details. (SKS)
- 
+
 7/1/98 (enhancement) Added a new internal C variable
 tclPreInitScript.  This is a pointer to a string that may hold an
 initialization script; If this pointer is non-NULL it is evaluated in
@@ -3623,7 +3623,7 @@ internal representation holds a pointer to a Proc structure. Extended
 TclCreateProc to take both strings and "procbody". (EMS)
 
 10/13/98 (bug fix) The "info complete" command can now handle strings
-with NULLs embedded.  Thanks to colin@field.medicine.adelaide.edu.au 
+with NULLs embedded.  Thanks to colin@field.medicine.adelaide.edu.au
 for providing this fix. (RJ)
 
 10/13/98 (bug fix) The "lsort -dictionary" command did not properly
@@ -3691,7 +3691,7 @@ by default.  Fixed socket code so it turns off this bit right after
 creation so sockets aren't kept open by exec'ed processes. [Bug: 892]
 Thanks to Kevin Kenny for this fix.  (SS)
 
-1/11/98 (bug fix)  On HP, "info sharedlibextension" was returning 
+1/11/98 (bug fix)  On HP, "info sharedlibextension" was returning
 empty string on static apps.  It now always returns ".sl".  (RJ)
 
 1/28/99 (configure change) Now support -pipe option on gcc.  (RJ)
@@ -3736,7 +3736,7 @@ panic. (stanton)
 
 2/2/99 (feature change/bug fix) Changed the behavior of "file
 extension" so that it splits at the last period.  Now the extension of
-a file like "foo..o" is ".o" instead of "..o" as in previous versions. 
+a file like "foo..o" is ".o" instead of "..o" as in previous versions.
 *** POTENTIAL INCOMPATIBILITY ***
 
 ----------------- Released 8.0.5, 3/9/99 -------------------------
@@ -3757,15 +3757,15 @@ a file like "foo..o" is ".o" instead of "..o" as in previous versions.
       of a UTF-8 string remains \0.  Thus Tcl strings once again do not
       contain null bytes, except for termination bytes.
     - For Java compatibility, "\uXXXX" is used in Tcl to enter a Unicode
-      character.  "\u0000" through "\uffff" are acceptable Unicode 
-      characters.  
+      character.  "\u0000" through "\uffff" are acceptable Unicode
+      characters.
     - "\xXX" is used to enter a small Unicode character (between 0 and 255)
       in Tcl.
     - Tcl automatically translates between UTF-8 and the normal encoding for
       the platform during interactions with the system.
     - The fconfigure command now supports a -encoding option for specifying
       the encoding of an open file or socket.  Tcl will automatically
-      translate between the specified encoding and UTF-8 during I/O. 
+      translate between the specified encoding and UTF-8 during I/O.
       See the directory library/encoding to find out what encodings are
       supported (eventually there will be an "encoding" command that
       makes this information more accessible).
@@ -3839,7 +3839,7 @@ imported procedures as well as procedures defined in a namespace. (BL)
 in place of Tcl_GetStringFromObj() if the string representation's length
 isn't needed. (BL)
 
-12/18/97 (bug fix) In the opt argument parsing package: if the description 
+12/18/97 (bug fix) In the opt argument parsing package: if the description
 had only flags, the "too many arguments" case was not detected. The default
 value was not used for the special "args" ending argument. (DL)
 
@@ -3849,11 +3849,11 @@ procs now in auto.tcl and package.tcl can be autoloaded if needed. (DL)
 1/7/98 (enhancement) tcltest made at install time will search for it's
 init.tcl where it is, even when using virtual path compilation. (DL)
 
-1/8/98 (os bug workaround) when needed, using a replacement for memcmp so 
+1/8/98 (os bug workaround) when needed, using a replacement for memcmp so
 string compare "char with high bit set" "char w/o high bit set" returns
 the expected value on all platforms. (DL)
 
-1/8/98 (unix portability/configure) building from .../unix/targetName/ 
+1/8/98 (unix portability/configure) building from .../unix/targetName/
 subdirectories and simply using "../configure" should now work fine. (DL)
 
 1/14/98 (enhancement) Added new regular expression package that
@@ -3885,7 +3885,7 @@ to generate direct loading package indexes (such those you need
 if you use namespaces and plan on using namespace import just after
 package require). pkg_mkIndex still has limitations regarding
 package dependencies but errors are now ignored and with -direct, correct
-package indexes can be generated even if there are dependencies as long 
+package indexes can be generated even if there are dependencies as long
 as the "package provide" are done early enough in the files. (DL)
 
 1/28/98 (enhancement) Performance tuning of regexp and regsub. (CCS)
@@ -3909,7 +3909,7 @@ continue to use the argv array after calling Tcl_OpenCommandChannel(). (CCS)
 2/1/98 (bug fix) More bugs with %Z in format string argument to strftime():
 1. Borland always returned empty string.
 2. MSVC always returned the timezone string for the current time, not the
-   timezone string for the specified time.  
+   timezone string for the specified time.
 3. With MSVC, "clock format 0 -format %Z -gmt 1" would return "GMT" the first
    time it was called, but would return the current timezone string on all
    subsequent calls. (CCS)
@@ -3931,7 +3931,7 @@ root directory was returning error. (CCS)
 determine the attributes for a file.  Previously it would return different
 error messages on Unix vs.  Windows vs. Mac. (CCS)
 
-2/4/98 (bug fixes) Fixed several instances of bugs where the parser/compiler 
+2/4/98 (bug fixes) Fixed several instances of bugs where the parser/compiler
 would reach outside the range of allocated memory. Improved the array
 lookup algorithm in set compilation. (DL)
 
@@ -3939,13 +3939,13 @@ lookup algorithm in set compilation. (DL)
 deprecated and ignored. The part1 is always parsed when the part2 argument
 is NULL. This is to avoid a pattern of errors for extension writers converting
 from string based Tcl_SetVar() to new Tcl_SetObjVar2() and who could easily
-forget to provide the flag and thus get code working for normal variables 
+forget to provide the flag and thus get code working for normal variables
 but not for array elements. The performance hit is minimal. A side effect
 of that change is that is is no longer possible to create scalar variables
-that can't be accessed by tcl scripts because of their invalid name 
-(ending with parenthesis). Likewise it is also parsed and checked to 
-ensure that you don't create array elements of array whose name is a valid 
-array element because they would not be accessible from scripts anyway. 
+that can't be accessed by tcl scripts because of their invalid name
+(ending with parenthesis). Likewise it is also parsed and checked to
+ensure that you don't create array elements of array whose name is a valid
+array element because they would not be accessible from scripts anyway.
 Note: There is still duplicate array elements parsing code. (DL)
 *** POTENTIAL INCOMPATIBILITY ***
 
@@ -3991,7 +3991,7 @@ registry call. (CCS)
 2/11/98 (enhancement) Eliminate the TCL_USE_TIMEZONE_VAR definition from
 configure.in, because it was the same information as the already existing
 HAVE_TM_ZONE definition.  The lack of HAVE_TM_ZONE is used to work around a
-Solaris and Windows bug where "clock format [clock sec] -format %Z -gmt 1" 
+Solaris and Windows bug where "clock format [clock sec] -format %Z -gmt 1"
 produces the local timezone string instead of "GMT". (CCS)
 
 2/11/98 (bug fix) Memleaks and dereferencing of uninitialized memory in
@@ -4216,7 +4216,7 @@ input lines.  (redman)
 This is used on Windows to avoid the various problems that people
 have been seeing where the system hangs when tclsh is running
 outside of the event loop. As part of this, renamed
-TcapAlertNotifier back to Tcl_AlertNotifier since it is public.
+TclpAlertNotifier back to Tcl_AlertNotifier since it is public.
 (stanton)
 
 3/23/99 (feature change) Test suite now uses "tcltest" namespace to
@@ -4349,7 +4349,7 @@ strings that are already null terminated.  [Bug: 1793] (stanton)
 
 5/3/99 (new feature) Applied Jeff Hobbs's string patch which includes
 the following changes:
-    - added new subcommands: equal, repeat, map, is, replace 
+    - added new subcommands: equal, repeat, map, is, replace
     - added -length option to "string compare|equal"
     - added -nocase option to "string compare|equal|match"
     - string and list indices can be an integer or end?-integer?.
@@ -4378,7 +4378,7 @@ improvements for many Tcl scripts.  [Bug: 1063] (stanton)
 encoding subfield from the LANG/LC_ALL environment variables in cases
 where the locale is not found in the built-in locale table.  It also
 attempts to initialize the locale subsystem so X11 is happy. [Bug: 1989]
-(stanton) 
+(stanton)
 
 5/14/99 (bug fix) Applied the patch to fix 100-year and 400-year
 boundaries in leap year code, from Isaac Hollander.  [Bug: 2066] (redman)
@@ -4466,7 +4466,7 @@ harness package.  Modified test files to use new tcltest package.
 
 6/26/99 (new feature) Applied patch from Peter Hardie to add poke
 command to dde and changed the dde package version number to
-1.1. (redman) 
+1.1. (redman)
 
 6/28/99 (bug fix) Applied patch from Peter Hardie to fix problem in
 Tcl_GetIndexFromObj() when the key being passed is the empty string.
@@ -4529,7 +4529,7 @@ notation for opening serial ports on Windows.  (redman)
 instead of the platform-specific "size_t", primarily after SunOS 4
 users could no longer compile. (redman)
 
-7/22/99 (bug fix) Fixed crashing during "array set a(b) {}". 
+7/22/99 (bug fix) Fixed crashing during "array set a(b) {}".
 [Bug: 2427] (redman)
 
 7/22/99 (bug fix) The install-sh script must be given execute
@@ -4564,7 +4564,7 @@ pack-old.n [Bug: 2469]. Patches from Don Porter. (redman)
 7/29/99 (bug fix) Allow tcl to open CON and NUL, even for redirection
 of std channels.  [Bug: 2393 2392 2209 2458] (redman)
 
-7/30/99 (bug fix) Applied fixed Trf patch from Andreas Kupries. 
+7/30/99 (bug fix) Applied fixed Trf patch from Andreas Kupries.
 [Bug: 2386] (hobbs)
 
 7/30/99 (bug fix) Fixed bug in info complete. [Bug: 2383 2466] (hobbs)
@@ -4574,7 +4574,7 @@ provided by James Dennett.  [Bug: 2450] (redman)
 
 7/30/99 (bug fix) Fixed launching of 16bit applications on Win9x from
 wish.  The command line was being primed with tclpip82.dll, but it was
-ignored later. 
+ignored later.
 
 7/30/99 (bug fix) Added functions to stub table, patch provided by Jan
 Nijtmans. [Bug: 2445] (hobbs)
@@ -4587,7 +4587,7 @@ thread's stack space. (redman)
 --------------- Released 8.2b2, August 5, 1999 ----------------------
 
 8/4/99 (bug fix) Applied patches supplied by Henry Spencer to greatly
-enhance performance of certain classes of regular expressions. 
+enhance performance of certain classes of regular expressions.
 [Bug: 2440 2447] (stanton)
 
 8/5/99 (doc change) Made it clear that tcl_pkgPath was not set for
@@ -4601,7 +4601,7 @@ terminated in tclLiteral.c. [Bug: 2496] (hobbs)
 8/9/99 (bug fix) Fixed test suite to handle larger integers
 (64bit). Patch from Don Porter. (hobbs)
 
-8/9/99 (documentation fix) Clarified Tcl_DecrRefCount docs 
+8/9/99 (documentation fix) Clarified Tcl_DecrRefCount docs
 [Bug: 1952]. Clarified array pattern docs [Bug: 1330]. Fixed clock docs
 [Bug: 693]. Fixed formatting errors [Bug: 2188 2189]. Fixed doc error
 in tclvars.n [Bug: 2042]. (hobbs)
@@ -4661,7 +4661,7 @@ and in testthread code.  No more known (reported) mem leaks for Tcl
 built using gcc on Solaris 2.5.1.  Also none reported for Tcl on NT
 (using Purify 6.0). (hobbs)
 
-10/30/99 (bug fix) fixed improper bytecode handling of 
+10/30/99 (bug fix) fixed improper bytecode handling of
 'eval {set array($unknownvar) 5}' (also for incr) (hobbs)
 
 10/30/99 (bug fix) fixed event/io threading problems by making
@@ -5115,7 +5115,7 @@ bits for Tcl_UniChar though) (hobbs)
 2001-05-30 (new feature)[TIP 15] Tcl_GetMathFuncInfo, Tcl_ListMathFuncs,
 Tcl_InfoObjCmd, InfoFunctionsCmd APIs (fellows)
 
-2001-06-08 (bug fix,feature enhancement)[219170,414936] all Tcl_Panic 
+2001-06-08 (bug fix,feature enhancement)[219170,414936] all Tcl_Panic
 definitions brought into agreement (porter)
 
 2001-06-12 (bug fix)[219232] regexp returned non-matching sub-pairs to have
@@ -5284,7 +5284,7 @@ compiles to 0 bytecodes (sofer)
 
 2001-09-13 (new feature) Old ChangeLog entries => ChangeLog.1999 (hobbs)
 
-2001-09-17 (new feature) compiling with TCL_COMPILE_DEBUG now required to 
+2001-09-17 (new feature) compiling with TCL_COMPILE_DEBUG now required to
 enable all compile and execution tracing (sofer)
         *** POTENTIAL INCOMPATIBILITY ***
 
@@ -5566,7 +5566,7 @@ options to configure (max)
 
 2002-07-30 (bug fix)[584603] WriteChars infinite loop non-UTF-8 string (kupries)
 
-2002-08-04 (new feature)[584051,580433,585105,582429][TIP 27] Tcl interfaces 
+2002-08-04 (new feature)[584051,580433,585105,582429][TIP 27] Tcl interfaces
 	are now fully CONST-ified.  Use the symbols USE_NON_CONST or
 	USE_COMPAT_CONST to select interfaces with fewer changes.
         *** POTENTIAL INCOMPATIBILITY ***
@@ -5576,7 +5576,7 @@ options to configure (max)
 	=> tcltest 2.2
 
 2002-08-07 (bug fix)[587488] mem leak with USE_THREAD_ALLOC (sofer,sass)
-	
+
 2002-08-07 (feature enhancement)[584794,584650,472576] boolean values
 	are no longer always re-parsed from string. (sofer)
 
@@ -5710,7 +5710,7 @@ packages in multiple interps.
 
 2003-02-01 (bug fix)[675356] [clock clicks {}]; [clock clicks -] - syntax errs
 
-2003-02-01 (bug fix)[656660] MT-safety for [clock format] 
+2003-02-01 (bug fix)[656660] MT-safety for [clock format]
 
 2003-02-03 (bug fix)[651271] command rename traces get fully-qualified names
         *** POTENTIAL INCOMPATIBILITY ***
@@ -5856,7 +5856,7 @@ in the 8.4.3 release.
 
 2003-07-16 (bug fix)[756791] corrected assumption that Tcl_Free == free
 
-2003-07-16 (feature enhancement) -DTCL_UTF_MAX=6 compile option forces 
+2003-07-16 (feature enhancement) -DTCL_UTF_MAX=6 compile option forces
 internal UCS-4 representation of Unicode (default is recommended UCS-2).
 
 2003-07-16 (bug fix)[767578] 64-bit corrections in thread notifier.
@@ -5929,7 +5929,7 @@ various odd regexp "can't happen" bugs.
 
 2003-12-09 (platform support)[852369] update errno usage for recent glibc
 
-2003-12-12 (bug fix)[858937] fix for [file normalize ~nobody] 
+2003-12-12 (bug fix)[858937] fix for [file normalize ~nobody]
 
 2003-12-17 (bug fix)[839519] fixed two memory leaks (vasiljevic)
 
@@ -5944,7 +5944,7 @@ various odd regexp "can't happen" bugs.
 
 2004-02-12 (feature enhancement) update HP-11 build libs setup
 
-2004-02-17 (bug fix)[849514,859251] corrected [file normailze] of $link/.. 
+2004-02-17 (bug fix)[849514,859251] corrected [file normailze] of $link/..
 
 2004-02-17 (bug fix)[772288] Unix std channels forced to exist at startup.
 
@@ -5962,36 +5962,149 @@ various odd regexp "can't happen" bugs.
 
 --- Released 8.4.6, March 1, 2004 --- See ChangeLog for details ---
 
+Changes to 8.5a1 include all changes to the 8.4 line through 8.4.6,
+plus the following, which focuses on the high-level feature changes
+in this changeset (new minor version) rather than bug fixes:
+
+ * refactored IO code to split FS path code into generic/tclPathObj.c
+  and generic/tclFileSystem.h
+
+ * refactored trace code into generic/tclTrace.c
+
+ * configure scripts now require autoconf 2.57 for regeneration
+
+ * updated runtime library scripts to use newer Tcl code features
+   (like replacing regsub with string map)
+
+ * improve robustness of tcltest test suite across environments
+
+ * changed the bytecode evaluation-stack addressing mode, from array-style
+   to pointer-style; the catch stack and evaluation stack are now
+   contiguous in memory
+
+ * switch command is now byte-compiled
+
+ * enhanced checking in 'file' command for Windows NT file permissions
+
+ * [TIP #57] new 'lassign' command (adopted from TclX)
+
+ * [TIP #75] switch -regexp now provides submatch info
+
+ * [TIP #90] extended 'catch' and 'return' to enable creation of procs
+   that are a true replacement for 'return'
+
+ * [TIP #100] new 'unload' command (can unload DLLs loaded via 'load',
+   requires the extension writer to support it)
+
+ * [TIP #111] new 'dict' command.  Several commands have been updated
+   to handle the list form of dicts implicitly at the C level where
+   only lists were previously accepted
+
+ * [TIP #112] 'namespace ensemble' command addition allows for ensembles
+   that build on the namespace abstraction
+
+ * [TIP #118] file attributes -readonly option for unices that support
+   chflags(), support Mac Classic attribute options on OS X, add
+   -rsrclength for OS X, enhance file copy on OS X to copy finder
+   attributes and resource forks transparently
+
+ * [TIP #120] enable dde in safe interpreters
+ * [TIP #130] enable unique dde server names on Windows
+ * [TIP #135] change dde servername -exact option to -force
+=> dde 1.3
+
+ * [TIP #121] new Tcl_SetExitProc C API to control application shutdown
+
+ * [TIP #123] expr ** exponentiation operator
+
+ * [TIP #124] 'clock clicks -milliseconds' now returns a wide integer and a
+   new 'clock clicks -microseconds' returns a wide integer, representing
+   the number of microseconds, both since the Posix epoch
+
+ * [TIP #127] added 'lsearch -index' option
+
+ * [TIP #136] added 'lrepeat' command
+
+ * [TIP #137/151] Add -encoding option to 'source' command and main tclsh
+   executable.
+     *** POTENTIAL INCOMPATIBILITY ***
+   For Tcl embedders that build on Tcl_Main() and make use of Tcl_Main's
+   former ability to pass a leading "-encoding" option to interactive shell
+   operations, this will now be consumed by Tcl.
+
+ * [TIP #138] New TCL_HASH_KEY_SYSTEM_HASH option for Tcl hash tables
+
+ * [TIP #139] documented portions of Tcl's namespace C APIs
+
+ * [TIP #148] correct [list]-quoting of the '#' character
+     *** POTENTIAL INCOMPATIBILITY ***
+   For scripts that assume a particular (buggy) string rep for lists.
+
+ * [TIP #156] add "root locale" to msgcat
+=> msgcat 1.4
+
+ * [TIP #157] leading {expand} syntax on words to cause argument expansion.
+   This is a safer/cleaner alternative to the use of 'eval'.
+
+--- Released 8.5a1, March 3, 2004 --- See ChangeLog for details ---
+
+2004-03-04 (new feature) registry package is [unload]able (thoyts)
+=> registry 1.1.4
+
 2004-03-08 (bug fix)[910525] [glob -path] in root directory (darley)
 
-2004-03-15 (bug fix)[916795] syntax error -> compiler segfault (sofer,porter)
+2004-03-12 (new feature)[TIP 163] [dict merge] (english, fellows)
 
-2004-03-29 (bug fix)[920667] install into any Unicode path on Win (hobbs)
+2004-03-18 (platform support) support for Mac Classic removed (steffen)
+
+2004-03-28 (bug fix)[925121] corrected segfault in bc compiler (sofer)
+
+2004-03-30 (bug fix)[495830,729692] bytecode execution checks
+each command/interp validity before executing. (sofer)
 
 2004-03-31 (bug fix)[811457] support translation to "" (porter)
 2004-03-31 (bug fix)[811461] ignore locales with no "language" part (porter)
-=> msgcat 1.3.2
+=> msgcat 1.4.1
+
+2004-04-01 (bug fix) make [glob -type d -dir . *] work across VFS boundary
+
+2004-04-06 (clean up) refactored Tcl header file #include order.  Might
+create need for changes in extensions that #include private headers.
+Changed source code files should work with older Tcl as well.  See ChangeLog.
+     *** POTENTIAL INCOMPATIBILITY ***
+
+2004-04-07 (bug fix)[920667] install into any Unicode path on Win (hobbs)
 
 2004-04-07 (platform support) properly substitute more values in Windows
 tclConfig.sh (hobbs)
 
 2004-04-23 (bug fix)[930851] reset channel EOF when eofchar changes (kupries)
 
+2004-04-28 (bug fix)[600812][TIP 184] [upvar 0 scalar array(foo)] raises error
+
 2004-05-03 (bug fix)[947070] stack overflow prevention on Win (kenny)
 
 2004-05-03 (bug fix)[868853] fix leak in [fconfigure $serial -xchar] (cassoff)
 
-2004-04-05 (bug fix)[928353,929892,928808,947440,948177] test fixes: OSX
-(abner)
-
-2004-05-04 (bug fix) crash: [cd] w/ volumerelative $HOME (hobbs)
+2004-05 (bug fix)[928353,929892,928808,947440,948177] test fixes: OSX (abner)
 
 2004-05-05 (bug fix)[794839] socket connect error -> r/w fileevents
 (gravereaux)
 
-2004-05-14 (bug fix)[940278,922848] [clock] notices $::env(TZ) changes, 
+2004-05-07 (bug fix)[949905] corrected utf-8 encoding of \u0000 on I/O (max)
+
+2004-05-13 (new feature)[TIP 129] [binary scan tnmrRqQ] (markus, fellows)
+
+2004-05-13 (new feature)[TIP 142] [interp limit] (fellows)
+
+2004-05-14 (bug fix)[940278,922848] [clock] notices $::env(TZ) changes,
 gmt works on all platforms. (kenny, welton, glessner)
 
+2004-05-16 (feature rewrite) bytecode execution of {expand} changed
+        *** POTENTIAL INCOMPATIBILITY with prior 8.5a releases ***
+
+2004-05-18 (platform support) makefile.vc now generates tclConfig.sh (thoyts)
+
 2004-05-18 (bug fix)[500285,500389,852944] [clock %G %V] ISO8601 week numbers
 (kenny)
 
@@ -6005,24 +6118,34 @@ gmt works on all platforms. (kenny, welton, glessner)
 2004-05-26 (bug fix)[960926] file count doubled when -singleproc 1 (porter)
 => tcltest 2.2.6
 
-2004-05-27 (bug fix)[949905] corrected utf-8 encoding of \u0000 on I/O (max)
+2004-05-26 (bug fix)[874058] improved build configuration on 64-bit systems.
+Corrects Tcl_StatBuf definition issues.  (hobbs)
+
+2004-05-30 (platform support) Win: allow signed short exit codes (gravereaux)
 
 2004-06-05 (bug fix)[976722] hi-res clock fixes: Win
 (godfrey, suchenwirth, kenny)
-
 2004-06-10 (bug fix)[932314] bad return values from Tcl_FSChdir() (vasiljevic)
 
-2004-06-14 (bug fix) correct dde hangs w/non-responsive apps (thoyts)
-=> dde 1.2.3
+2004-06-18 (platform support) regonize more unix locales (huang)
+
+2004-06-18 (bug fix) prevent stack overflow from long free() chains (fellows)
 
 2004-06-21 (platform support) exceptions w/ gcc -O3 on Win (dejong)
 
+2004-06-23 (feature rewrite)[976496] thread local storage done with hash
+tables to avoid system limits (mistachkin)
+
 2004-06-29 (bug fix)[981733] SafeBase global pollution (fellows)
 
+2004-06-30 (new feature)[TIP 188] [string is wideinteger] (kenny)
+
 2004-07-02 (new feature)[TIP 202] pipe redirection 2>@1 (hobbs)
 
 2004-07-03 (bug fix)[908375] round() wide integer support (lavana, sofer)
 
+2004-07-07 (bug fix)[458361] shimmer of single-word scripts suppressed (sofer)
+
 2004-07-15 (bug fix)[770053] crash in thread finalize of notifier (vasiljevic)
 
 2004-07-15 (bug fix)[990453] plug mutex leaks on reinit
@@ -6033,16 +6156,13 @@ gmt works on all platforms. (kenny, welton, glessner)
 
 2004-07-19 (bug fix)[987967] improved self-init of mutexes on Win (vasiljevic)
 
-2004-07-19 (bug fix)[874058] improved build configuration on 64-bit systems.
-Corrects Tcl_StatBuf definition issues.  (hobbs)
-
 2004-07-20 (bug fix) pure Darwin/CFLite support (steffen)
 
 2004-07-20 (bug fix)[736426] plug leaky allocator reinit (mistachkin, kenny)
 
---- Released 8.4.7, July 26, 2004 --- See ChangeLog for details ---
+2004-07-30 (bug fix)[999084] no deadlock in re-entrant Tcl_Finalize (porter)
 
-2004-07-28 (bug fix)[999084] no deadlock in re-entrant Tcl_Finalize (porter)
+2004-08-02 (new feature)[TIP 207] [interp invokehidden -namespace] (porter)
 
 2004-08-10 (bug fix) thread IDs on 64-bit systems (ratcliff,vasiljevic)
 
@@ -6051,98 +6171,215 @@ Corrects Tcl_StatBuf definition issues.  (hobbs)
 
 2004-08-16 (bug fix)[1008314] Tcl_SetVar TCL_LIST_ELEMENT (sofer,porter)
 
+2004-08-18 (new feature)[TIP 173,209] complete [clock] rewrite (kenny)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2004-08-18 (new feature)[TIP 189] package loading for Tcl Modules (kupries)
+
 2004-08-19 (bug fix)[1011860] [scan %ld] fix on LP64 (fellows,porter)
 
+2004-08-23 (bug fix)[695441] extend [tcl_findLibrary] search path to include
+		$::auto_path and [pkgconfig get scriptdir,runtime] (porter)
+
+2004-08-27 (platform support) TCL_MODULE_PATH values for Mac OSX (steffen)
+
+2004-08-27 (bug fix)[1017022] recognize imported ensembles (fellows)
+
 2004-08-30 (bug fix) [string map $x $x] crash (fellows)
 
 2004-09-01 (bug fix)[1020445] WIN64 support (hobbs)
 
+2004-09-03 (bug fix)[1020538] crash in [file copy] (violi,fellows)
+
 2004-09-07 (bug fix)[1016167] [after] overwrites its imports (kenny)
 
 2004-09-08 (bug fix) fixed [clock format 0 -format %k] (kenny)
 
 2004-09-09 (bug fix)[560297] fixed broken [namespace forget] logic (porter)
 
-2004-09-09 (bug fix)[1017299] fixed [namespace import] cycle prevention (porter)
+2004-09-09 (bug fix)[1017299] fixed [namespace import] cycle prevention
+(porter)
 
 2004-09-10 (performance) $x[set x {}] is now fast [K $x [set x {}]] (sofer)
 
-2004-09-10 (bug fix)[868489] better control over int <-> wideInt (fellows,kenny)
+2004-09-10 (bug fix)[868489] better control over int <-> wideInt
+(fellows,kenny)
 
 2004-09-10 (bug fix)[1025359] POSIX errorCode from wide seeks (kupries,fellows)
 
+2004-09-10 (bug fix)[707104,1026493] fix [rename] of [interp alias] (porter)
+
 2004-09-18 (bug fix)[868467] fix [expr 5>>32] => 0, not 5 (hintermayer,fellows)
 
-2004-09-23 (bug fix)[1016726] fix `make clean` in static config (leitgeb,dejong)
+2004-09-21 (bug fix) consistent errorinfo from [namespace eval x error foo bar]
+		and [namespace eval c {error foo bar}] (porter)
+
+2004-09-22 (feature change) syntax errors not reported at compile time;
+		deferred to runtime.  Support [return -errorline]. (porter)
 
-2004-09-29 (bug fix)[1036649] syntax error in [subst] => buffer overflow (sofer)
+2004-09-23 (bug fix)[1016726] fix `make clean` in static config
+(leitgeb,dejong)
+
+2004-09-22 (feature change) report all compile errors at runtime (porter)
+
+2004-09-29 (bug fix)[1036649] syntax error in [subst] => buffer overflow
+(sofer)
 
 2004-09-30 (bug fix)[1038021] save/restore error state: var traces (porter)
 
-2004-10-08 (bug fix)[954263] case insensitive [file exec] for Win (hobbs,darley)
+2004-10-01 (performance) stackframe level values in internal reps (fellows)
+
+2004-10-01 (feature change)[1037235] auto-create [dict] key paths (fellows)
+
+2004-10-04 (bug fix)[884830] eq and ne parse in expr (fellows)
+
+2004-10-05 (reform) errorInfo, errorCode management (porter)
+	*** POTENTIAL INCOMPATIBILITY for traces on those vars ***
+
+2004-10-06 (feature change)[1041072] re-bless and enhance Tcl_AppendResult
+(dkf)
+
+2004-10-06 (reform) more robust interp result appends (porter)
+=> dde 1.3.1
+=> registry 1.1.5
+
+2004-10-06 (reform) re-write of [glob] guts (fellows)
+
+2004-10-07 (reform)[925620] improved platform split of VFS code (darley)
+
+2004-10-08 (new feature)[TIP 201] "in" and "ni" expr operators (fellows)
+
+2004-10-08 (new feature)[TIP 212] [dict update]; [dict with] (fellows)
+
+2004-10-08 (bug fix)[954263] case insensitive [file exec] for Win
+(hobbs,darley)
 
 2004-10-14 (performance) [info commands/globals/procs/vars $pattern] faster
-		when $pattern is trivial (fellows)
+                when $pattern is trivial (fellows)
+
+2004-10-14 (new feature)[TIP 217] [lsort -indices] (salsman,fellows)
+
+2004-10-24 (reform) replaced bit flag values with macros for Var handling
+	*** POTENTIAL INCOMPATIBILITY for accesses to Var internals ***
+
+2004-10-26 (new feature)[1054370] install msgcat, http, tcltest as TM's
+(porter)
+
+2004-10-26 (bug fix)[767676] negative PIDs with pipes (giese,gravereaux)
+
+2004-10-27 (bug fix)[731778] stop critical section leaks
+(mistachkin,gravereaux)
+
+2004-10-27 (bug fix)[926088] -load option to find tested packages (gravereaux)
 
 2004-10-28 (bug fix)[1030548] restore the --enable-symbols --enable-threads
-		build on Win (mistachkin,kenny,kupries)
+build on Win (mistachkin,kenny,kupries)
 
 2004-10-29 (bug fix)[1055673] fix command line syntax error message (porter)
 => tcltest 2.2.7
 
+2004-10-30 (bug fix)[926106] fix [file mtime] DST anomaly (kenny)
+
 2004-10-31 (bug fix)[1057461] fix [info globals ::varName] (fellows)
 
 2004-11-02 (bug fix)[761471] fix [expr {NaN == NaN}] (sofer)
 
 2004-11-02 (bug fix)[1017151] misleading errorInfo after tests (seeger,porter)
 
+2004-11-03 (bug fix)[527164] preserve errorinfo from var traces (porter)
+
+2004-11-08 (bug fix){947693] Made -blocking option of channel during [close]
+consistent on Windows with Unix (gravereaux)
+	*** POTENTIAL INCOMPATIBILITY ***
+
 2004-11-11 (bug fix)[1034337] recursive file delete, MacOSX (steffen)
 
+2004-11-12 (new feature)[TIP 221] [interp bgerror] (porter)
+
+2004-11-12 (new feature)[TIP 226] Tcl_(Save|Restore|Discard)InterpState
+(porter)
+
+2004-11-12 (new feature)[TIP 227] Tcl_(Get|Set)ReturnOptions (porter)
+
 2004-11-12 (bug fix)[1004065] stop crash when TCL_UTF_MAX==6 (hobbs,porter)
 
 2004-11-15 (bug fix)[10653678] [trace variable],[trace remove] interop (porter)
 
-2004-11-16 (bug fix)[695441] [tcl_findLibrary] search $::auto_path too (porter)
-
 2004-11-16 (bug fix)[1067709] crash in [fconfigure -ttycontrol] (hobbs)
 
 2004-11-18 (new feature) configure options --enable-man-suffix (max)
 
-Documentation improvements [759545,1058446,1062647,1065732,etc.]
-Test suite expansion [1036649,1001997,etc.]
+2004-11-22 (bug fix)[1030465] Improve HAVE_TYPE_OFF64_T check (dejong)
 
---- Released 8.4.8, November 18, 2004 --- See ChangeLog for details ---
+2004-11-22 (bug fix)[1043129] Fixed the treatment of backslashes in file
+join on Windows (darley)
 
-2004-11-22 (bug fix)[1030465] Improve HAVE_TYPE_OFF64_T check (dejong)
+2004-11-22 (bug fix)[976438] Move init.tcl search path construction to
+tclInit (porter)
 
-2004-11-23 (bug fix)[1072654] Fixed segfault in info vars trivial
+2004-11-24 (bug fix)[1072654] Fixed segfault in info vars trivial
 matching branch (new in 8.4.8) (porter)
 
-2004-11-23 (bug fix)[1043129] Fixed the treatment of backslashes in file
-join on Windows (darley)
-
 2004-11-24 (bug fix)[1001325, 1071701] Fixed readdir_r detection and usage
 (dejong, kenny, porter)
 
 2004-11-24 (bug fix)[1071807] Fixed all uses of 'select' to use standard
 macros rather than older bit-whacking style (kenny)
 
+2004-11-26 (bug fix)[1073524] Simplify the code to check for correctness of
+strstr, strtoul and strtod on unix (fellows)
+
 2004-11-26 (bug fix)[1072136] Remove file normalize on tcl_findLibrary
 search path uniqification added in 8.4.8 (porter)
 
+2004-11-30 (bug fix)[976520] Rework startup/initialization of the Tcl
+library, encoding search initialization, and Tcl_FindExecutable structure.
+[tclInit] no longer driven by the value of $::tcl_libPath (TCLLIBPATH).
+(porter)
+	*** POTENTIAL INCOMPATIBILITY : makes encoding names case sensitive
+	    on Windows, where they have been case insensitive ***
+
 2004-12-02 (bug fix)[1074671] Ensure tilde paths are not returned specially
 by 'glob' (darley)
 
---- Released 8.4.9, December 6, 2004 --- See ChangeLog for details ---
+Doc improvements [759545,926590,935853,1017072,1018486,1022527,1027849,
+	1032243,1047928,1048005,1058446,1062647,1065732,1073334,etc.]
+Test suite expansion [1036649,1001997,etc.]
 
-2004-12-29 (platform support)[1092952,1091967] MSVC7, gcc OPT compiles (hobbs)
+--- Released 8.5a2, December 7, 2004 --- See ChangeLog for details ---
 
-2005-01-05 (bug fix)[1084595] encoding maps for some Chinese locales (fellows)
+2004-12-13 (bug fix)[1083082] encoding memory leaks (ade,porter)
+
+2004-12-13 (bug fix)[1082349] restored C++ extension support (porter)
+
+2004-12-14 (bug fix)[1081541] workaround automake-ism "$U" (porter)
+
+2004-12-15 (new feature) CallFrames on execution, not C, stack (sofer)
+
+2004-12-16 (bug fix)[1085023] [interp limit] support in [vwait], etc. (fellows)
+
+2004-12-29 (bug fix)[1090413] make [clock scan 0030] work (morian,kenny)
+
+2004-12-29 (bug fix)[1092789] make [clock scan 10000] work (porter,kenny)
+
+2004-12-29 (platform support)[1092952,1091967] MSVC7, gcc OPT compiles (hobbs)
 
 2005-01-06 (performance)[1020491] [http::mapReply] (fellows)
 => http 2.5.1
 
+2005-01-09 (bug fix)[1095909] stopped use of readdir_r (english)
+
+2005-01-10 (enhancement)[1081595] stopped use of TCL_DBGX (english)
+
+2005-01-17 (bug fix)[1100542] [glob] of Windows shares (schar,darley)
+
+2005-01-19 (new feature)[TIP 235] C API for ensembles (fellows)
+
+2005-01-21 (new feature)[TIP 233] virtual time (kupries)
+
 2005-01-25 (bug fix)[1101670] [auto_reset] update for [namespace] (porter)
+***POTENTIAL INCOMPATIBILITY***
+May cause re-[source]-ing of files that have not anticipated that before.
 
 2005-01-27 (new feature)[TIP 218] Tcl_Channel API update for threads (kupries)
 
@@ -6153,7 +6390,7 @@ by 'glob' (darley)
 2005-02-10 (bug fix)[1119369] Tcl_EvalObjEx: avoid shimmer loss of List intrep
 (sofer,macdonald)
 
-2005-02-10 (platform support) correct gcc builds for AIX-4+, HP-UX-11 (hobbs)
+2005-02-11 (platform support) correct gcc builds for AIX-4+, HP-UX-11 (hobbs)
 
 2005-02-24 (bug fix)[1119798] prevent [source $directory] (porter,mpettigr)
 => tcltest 2.2.8
@@ -6162,34 +6399,76 @@ by 'glob' (darley)
 
 2005-03-15 (platform support) OpenBSD ports patch (thoyts)
 
-2005-03-15 (platform support)[1163422] time_t wider than long (kenny)
-
 2005-03-18 (bug fix)[1115904] restore recursion limit in direct eval (porter)
 
+2005-03-24 (bug fix) stop conflict between Tcltest and Thread packages (porter)
+
 2005-03-29 (platform support) allow msys builds without cygwin (hobbs)
 
-2005-04-06 (bug fix)[1178445] fix memory waste at thread exit (vasiljevic)
+2005-04-01 (internal change)[1158008]  internal rep of "list" Tcl_Obj's
+now uses a refcounted struct (sofer)
+***POTENTIAL INCOMPATIBILITY***
+For any code that goes poking into the internals of "list" Tcl_Obj's
+
+2005-04-05 (performance)[1174551] Tcl_DecrRefCount of Tcl_Obj "chains" (sofer)
+
+2005-04-08 (performance)[1077262] better Tcl_Encoding cache lifetimes (porter)
+
+2005-04-10 (bug fix)[1180368] [interp invokehidden] mem leak (kenny,porter)
+
+2005-04-12 (performance)[1177363] startup encoding file scan (porter)
+
+2005-04-12 (performance)[1182459] [clock format] (kenny)
 
 2005-04-13 (bug fix) min buffer size dropped from 10 to 1 byte (gravereaux)
 
-2005-04-19 (bug fix)[947693] Windows pipes honor -blocking during close
-(gravereaux)  ***POTENTIAL INCOMPATIBILITY***
-async pipes on windows, set -blocking 1 before [close] to receive exit status
+2005-04-16 (bug fix)[1178445] fix memory waste at thread exit (vasiljevic)
+
+2004-04-16 (bug fix)[1084111] [array names] memory leak (ade,sofer)
+
+2005-04-19 (bug fix)[1185933] [clock] init clobbered global vars (ring,kenny)
+
+2005-04-19 (new feature) [::tcl::unsupported::EncodingDirs] - unsupported
+command to set search path for encoding files (porter)
 
 2005-04-20 (bug fix)[1090869] Tcl_GetInt accept 0x80000000, 64-bit
 (porter,singh)
 
 2005-04-22 (bug fix)[1187123] [string is boolean] respect EIAS (porter)
 
+2005-04-25 (enhancement) update to tzdata2005i (kenny)
+
 2005-04-25 (platform support) builds on Mac OS X 10.1 (steffen)
 
+2005-04-27 (new feature)[TIP 183] [open $f {... BINARY ...}] (porter)
+
+2005-04-29 (new feature)[TIP 176] simple index arithmetic (porter)
+
 2005-05-06 (platform support) x86_64 Solarix cc and Solaris 10 builds (hobbs)
 
+2005-05-10 (bug fix)[1198892] [expr {i**0}] error (kaitschu,markus)
+
+2005-05-10 (new feature)[TIP 132] floating-point conversion to string (kenny)
+***POTENTIAL INCOMPATIBILITY***
+For scripts that rely on (tcl_precision==12) number formatting
+
+2005-05-10 (new feature)[TIP 232] math functions as commands (kenny)
+***POTENTIAL INCOMPATIBILITY***
+Tcl_GetMathFuncInfo functioning is reduced; routine is now deprecated
+
+2005-05-13 (feature removed) TCL_NO_MATH compiler directive (porter)
+
 2005-05-14 (platform support) Mac OSX: configurable CoreFoundation API
 (steffen)
 
 2005-05-14 (platform support) Mac OSX: use realpath when threadsafe (steffen)
 
+2005-05-17 (feature removed) Tcl_ObjType's "list", "procbody", "index",
+"ensembleCommand", "localVarName", "levelReference, "boolean" are no
+longer registered (porter)
+***POTENTIAL INCOMPATIBILITY***
+For any callers of Tcl_GetObjType on those strings
+
 2005-05-20 (bug fix)[1201589] boolean literal prefix in expressions (porter)
 
 2005-05-24 (platform support) Darwin build support merged into unix (steffen)
@@ -6199,15 +6478,32 @@ Can support [load] from memory as well (steffen)
 
 2005-05-24 (new feature)[1202178] [time] returns non-integer result (steffen)
 
+2005-05-25 (new feature)[TIP 182] [expr {bool(...)}] (mistachkin,porter)
+
+2005-05-30 (new feature)[TIP 229] [namespace path] (fellows)
+
 2005-05-31 (bug fix)[1082283] Unix: notifier thread now joinable (vasiljevic)
 
+2005-06-01 (new feature)[TIP 241] -nocase: lsort, lsearch, switch (mistachkin)
+
+2005-06-01 (bug fix)[1209759] "return TCL_RETURN;" could cause panic (porter)
+
 Documentation improvements [1075433,1085127,1117017,1124160,1149605,etc.]
 
---- Released 8.4.10, June 4, 2005 --- See ChangeLog for details ---
+--- Released 8.5a3, June 4, 2005 --- See ChangeLog for details ---
 
 2005-06-06 (bug fix)[1213678] Windows/gcc: crash in stack.test (kenny)
 
-2005-06-07 (bug fix) Unix: --enable-threads compile failure (fellows)
+2005-06-07 (new feature)[TIP 208] [chan] and [chan truncate] (fellows)
+
+2005-06-07 (revert) Restored registration of "procbody" Tcl_ObjType (porter)
+Reduces the ***POTENTIAL INCOMPATIBILITY*** from 2005-05-17.
+
+2005-06-13 (bug fix)[1217375,1219176] [file mkdir] race (diekhans,darley)
+
+2005-06-14 (bug fix)[1220058] [namespace delete] crash (duquette,fellows)
+
+2005-06-17 (bug fix)[1221395] Tcl_LimitSetTime able to break [vwait] (fellows)
 
 2005-06-18 (bug fix)[1154163] [format %h] on 64-bit OS's (kraft,fellows)
 
@@ -6223,25 +6519,29 @@ Documentation improvements [1075433,1085127,1117017,1124160,1149605,etc.]
 
 2005-06-23 (bug fix)[1225957] Windows/gcc: crashes in assembler code (kenny)
 
-2005-06-27 (revert)[1101670] [auto_reset] disabled in non-global namespace.
-Restores Tcl 8.4.9 behavior (porter)
-
---- Released 8.4.11, June 28, 2005 --- See ChangeLog for details ---
+2005-06-24 (bug fix) make Tcl_Preserve safe in Tk exit handlers (kenny)
 
 2005-07-01 (bug fix)[1222872] notifier spurious wake-up protection (vasiljevic)
 
-2005-07-05 (bug fix)[1077262] improved Tcl_Encoding lifetimes (porter)
-
 2005-07-05 (bug fix)[1230597] allow idempotent [namespace import] (porter)
 
-2005-07-07 (bug fix)[1095909] readdir_r usage purged (hobbs)
+2005-07-15 (bug fix)[1237907] localtime() => NULL => crash (kenny)
+
+2005-07-21 (dropped support) IRIX 4, RISCos, Ultrix, and ancient BSD (kenny)
+***POTENTIAL INCOMPATIBILITY***
 
 2005-07-22 (enhancement)[1237755] 8.4 features in script library (fradin,porter)
 
-2005-07-24 (new feature) configure macros SC_PROG_TCLSH, SC_BUILD_TCLSH (dejong) 
+2005-07-24 (new feature) configure macros SC_PROG_TCLSH, SC_BUILD_TCLSH (dejong)
 2005-07-26 (bug fix)[1047286] cmd delete traces during namespace delete (porter)
 
 2005-07-26 (new unix feature)[1231015] ${prefix}/share on ::tcl_pkgPath (dejong)
+***POTENTIAL INCOMPATIBILITY***
+
+2005-07-27 (bug fix)[1214462] [unknown] can return exceptions (porter)
+
+2005-07-27 (new feature) value of ::tcl_precision now kept per-thread (porter)
+***POTENTIAL INCOMPATIBILITY***
 
 2005-07-28 (unix bug fix)[1245953] O_APPEND for >> redirection (fellows)
 
@@ -6253,16 +6553,31 @@ Restores Tcl 8.4.9 behavior (porter)
 
 2005-08-05 (Solaris bug fix)[1252475] recognize cp1251 encoding (wagner,fellows)
 
-2005-08-17 (bug fix)[1217375] [file mkdir] race (diekhans,darley)
+2005-08-11 (config options) eliminated USE_THREAD_STORAGE option (kenny)
+
+2005-08-23 (toolchain support) autoconf-2.59 now required (dejong)
+
+2005-08-24 (new feature)[TIP 219] reflected channels ([chan create]) (kupries)
 
 2005-08-25 (bug fix)[1267380] [lrepeat] buffer overflow prevention (fellows)
 
+2005-08-26 (bug fix) fix [namespace ensemble] crashes in Snit (fellows)
+
 2005-08-29 (bug fix)[1275043] restore round() away from zero (kenny)
 
+2005-08-29 (bug fix)[1189657] correct [tcl::tm::roots] (porter)
+
 2005-09-07 (bug fix)[1283976] invalid [format %c -1] result (porter)
 
+2005-09-08 (new feature)[1242844][TIP 254] new types for Tcl_LinkVar (fellows)
+
+2005-09-07 (toolchain support) deprecate TCL_VARARGS*; stdarg.h assumed (porter)
+***POTENTIAL INCOMPATIBILITY***
+
 2005-09-15 (RHEL bug fix)[1287638] support open >2GB files RHEL 3 (palan)
 
+2005-09-08 (new feature)[TIP 255] [expr min()] and [expr max()] (hobbs)
+
 2005-09-30 (bug fix)[1306162] $argv encoding and list formatting (porter)
 
 2005-10-04 (bug fix)[1067708] [fconfigure -ttycontrol] leak (hobbs)
@@ -6274,99 +6589,159 @@ Restores Tcl 8.4.9 behavior (porter)
 
 2005-10-05 (bug fix)[979640] buffer overrun mixing putenv(), ::env (bold,hobbs)
 
-2005-10-13 (bug fix)[1284178] [format] accept all integer values (porter)
+2005-10-08 (new feature)[TIP 237] unlimited range for integers (kenny,porter)
+***POTENTIAL INCOMPATIBILITY*** for any code that relies on implicit truncation
+of integer calculations to the range of a C long
+
+2005-10-14 (platform support)[1256937] MSVC++ static builds (thoyts)
+
+2005-10-19 (bug fix)[1331475] [dict append] crash (bills,sofer)
 
-2005-10-22 (bug fix)[1251791] optimization exposed wide/int difference(sofer)
+2005-10-20 (bug fix)[1333036] [lset] shared sublist handling (sofer)
 
-2005-10-23 (bug fix)[1334947] value refcount error in var setting (sofer)
+2005-10-23 (bug fix)[1335006] memleack in [glob] (melbardis,darley)
+
+2005-10-23 (bug fix)[1325803] Win: [file stat] on links (bonilla,darley)
 
 2005-11-01 (bug fix)[1337941] Tcl_TraceCommand() -> crash (devilliers,porter)
 
-2005-11-03 (new Win NT/XP feature) Unicode console support (kovalenko,thoyts)
+2005-11-02 (platform support)[1256937] MSVC 8 support (thoyts)
 
-2005-11-03 (bug fix)[1201171] [encoding system] in Tclkit (schekin,porter)
+2005-11-03 (new Win NT/XP feature) Unicode console support (kovalenko,thoyts)
 
-2005-11-04 (bug fix)[1337229,1338280] [namespace delete] / unset traces (porter)
+2005-11-04 (bug fix)[1337229,1338280] [namespace delete] / unset traces (sofer)
 
 2005-11-04 (enhancement) Korean timezone abbreviations (kenny)
 
-2005-11-04 (bug fix)[1317477] double encoding of time zone (kenny)
+2005-11-04 (platform support)[1163896] LynxOS [load] (heidibr)
 
-2005-11-04 (Win enhancement)[1267871] extended exit codes (newman,thoyts)
+2005-11-04 (bug fix)[1334947] value refcount error in var setting (sofer)
 
-2005-11-04 (platform support)[1163896] LynxOS [load] (heidibr)
+2005-11-04 (Win enhancement)[1267871] extended exit codes (newman,thoyts)
 
-2005-11-08 (bug fix)[1348775] unset trace memory leak (sofer)
+2005-11-07 (bug fix)[1348775] unset trace memory leak (sofer)
 
-2005-11-08 (bug fix)[1162286] [package ifneeded] warns reported (lavana,porter)
-        *** POTENTIAL INCOMPATIBILITY ***
+2005-11-08 (bug fix)[1162286] [package require] checks that the script
+registered by [package ifneeded] provides the version it claims (lavana,porter)
+*** POTENTIAL INCOMPATIBILITY ***
 
-2005-11-09 (bug fix)[1350293] [after $negative $script] fixed (kenny)
+2005-11-09 (bug fix)[1350293,1350291] [after $negative $script] fixed (kenny)
 
-2005-11-15 (Win bug fix)[926016,1353840] correct [file mtime] (kenny)
+2005-11-12 (bug fix)[1352734,1354540,1355942,1355342] [namespace delete]
+issues with [namespace path] and command delete traces (sofer,fellows)
 
 2005-11-18 (bug fix)[1358369] URL parsing standards compliance (wu,fellows)
+=> http 2.5.2
 
-2005-11-18 (bug fix)[1359094] Tclkit crash (thoyts, kupries)
+2005-11-18 (revert) Restored registration of "list" Tcl_ObjType (porter)
+Reduces the ***POTENTIAL INCOMPATIBILITY*** from 2005-05-17.
 
-2005-11-18 (bug fix)[1355942,1355342] cmd delete trace/ namespace delete (sofer)
+2005-11-18 (bug fix)[1359094] Tclkit crash (thoyts, kupries)
 
 2005-11-20 (bug fix)[1091431] Tcl_InitStubs failure crashes wish (english)
 
+2005-11-27 (platform support) Darwin 64bit, Tiger copyfile(), and
+Max OSX universal binaries support (steffen)
+
+2005-11-28 (bug fix) [clock] DST transition error (mackerras,kenny)
+
 2005-11-29 (bug fix)[1366683] [lsearch -regexp] backrefs (cleverly,fellows)
 
-2005-11-29 (enhancement)[1369597] Win 64: --enable-64bit=amd64|ia64 (hobbs)
+2005-11-30 (performance) recoded portions of [clock] in C (kenny)
+
+2005-11-30 (enhancement) improved bytecode compiling of [switch] (fellows)
+*** POTENTIAL INCOMPATIBILITY ***
+For loading bytecode compiled and saved by earlier 8.5alpha releases
 
 2005-12-05 (Darwin bug fix)[1034337] NFS recursive file delete (steffen)
 
---- Released 8.4.12, December 3, 2005 --- See ChangeLog for details ---
+2005-12-08 (platform support) Win x64 build (hobbs)
 
 2005-12-09 (bug fix)[1374778] [lsearch -start $pastEnd] => -1 (fellows)
 
-2005-12-12 (bug fix)[1241572] correct [expr abs($LONG_MIN)] again (max)
-
 2005-12-12 (bug fix)[1377619] configure syntax error exposed in bash-3.1 (hobbs)
 
-2006-01-09 (bug fix)[1400572] [info level $l] => "namespace inscope" (porter)
+2005-12-13 (bug fix)[1379349] [dict for] CoW error (ring,hippler,fellows)
+
+2005-12-18 (bug fix)[1382528] [dict for {k v} {} {}] crash (kovalenko,fellows)
+
+2005-12-27 clock tzdata updated to Olson's tzdata2005r (kenny)
+
+2005-12-27 libtommath updated to release 0.37 (kenny)
+
+2006-01-09 (bug fix)[1480572] [info level $l] => "namespace inscope" (porter)
+
+2006-01-11 (compat support)[1397843] when ::errorInfo is traced, fall back to
+old pattern of stack trace construction (porter).
+Reduces the ***POTENTIAL INCOMPATIBILITY*** from 2004-10-05.
+
+2006-01-12 (bug fix)[1366227] Win: [file stat] sharing violation (darley)
 
 2006-01-23 (bug fix)[1410553] Tcl_GetRange Unicode confusion (twylite,spjuth)
 
+2006-01-23 (bug fix)[1412695] args handling in precompiled procs (traum,sofer)
+
+2006-02-01 (new feature)[1275435][TIP 250] [namespace upvar] (sofer)
+
+2006-02-01 (new feature)[958222][TIP 181] [namespace unknown] (madden)
+
+2006-02-01 (new feature)[944803][TIP 194] [apply] (mistachkin)
+
+2006-02-08 (new feature)[1413934][TIP 258] [encoding dirs], etc. (porter)
+
+2006-02-09 (new feature)[1413115][TIP 215] auto-init [incr] (leitgeb)
+
+2006-03-02 (bug fix)[1379287] norm of paths with /../ back to root (porter)
+
+2006-03-03 (compat support) Restored registration of a "boolean" Tcl_ObjType
+(porter)
+Reduces the ***POTENTIAL INCOMPATIBILITY*** from 2005-05-17.
+
 2006-03-06 (bug fix)[1439836,1444291] fix TCL_EVAL_{GLOBAL,INVOKE} handling
 when auto-loading or exec traces are present (porter)
 
 2006-03-10 (bug fix)[1437595] Win socket finalize with threads (vasiljevic)
 
-2005-03-13 (revert 2005-07-26 change) ${prefix}/share on ::tcl_pkgPath (porter)
+2006-03-13 (revert 2005-07-26 change) ${prefix}/share on ::tcl_pkgPath (porter)
 
-2006-03-14 (bug fix)[1381436,859820] threadsafe Tcl_WaitPid (gravereaux,kupries)
+2006-03-14 (bug fix)[1448251] TCLX.y_TM_PATH handling (noble, kupries)
 
 2006-03-14 (bug fix)[768659] pipeline error when last command missing (kupries)
 
 2006-03-18 (bug fix)[1193497] Win porting of [file writable] (darley,vogel)
 
-2006-03-28 (bug fix)[1064247] BSD: path normalization with realpath() (steffen)
+2006-03-18 (bug fix)[1084705] [glob -nocomplain] silence empty result only,
+no other errors (darley)
+***POTENTIAL INCOMPATIBILITY***
 
-2006-03-28 (revert 2005-11-03 feature) Unicode console support (hobbs)
-        *** POTENTIAL INCOMPATIBILITY ***
+2006-03-21 (platform enhancement)[823329] HFS globbing support (steffen)
+
+2006-03-23 (platform support) updated tcl.spec file (max)
+
+2006-03-28 (bug fix)[1064247] BSD: path normalization with realpath() (steffen)
 
 2006-04-03 (bug fix)[1462248] crash reading utf-8 chars spanning multiple
 buffers at end of file (kraft,kupries)
 
-2006-04-04 (revert 2005-11-08)[1162286] [package ifneeded] warns (porter)
-        *** POTENTIAL INCOMPATIBILITY ***
-
 2006-04-05 (bug fix)[1464039] Tcl_GetIndexFromObj: empty key (fellows)
 
 2006-04-05 (bug fix) overdue dde, registry  patchelevel increments (porter)
-=> dde 1.2.4
-=> registry 1.1.4
+=> dde 1.3.2
+=> registry 1.2
 
 2006-04-06 (bug fix)[1457515] TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
 removed (steffen)
 
 2006-04-11 (bug fix)[1458266] enter/enterstep trace interference (leunissen)
 
---- Released 8.4.13, April 19, 2006 --- See ChangeLog for details ---
+2006-04-12 (feature change)[1376892] revised definition of [:print:] (fellows)
+
+(platform support) Use of _ANSI_ARGS_ purged.  ANSI compiler required (fellows)
+
+Documentation improvements [1211078,1190891,1292427,1277503,1104682,1359183,
+1415725,666770]
+
+--- Released 8.5a4, April 27, 2006 --- See ChangeLog for details ---
 
 2006-05-04 (bug fix)[1480509] srand() accept wide input (porter,afredd)
 
@@ -6375,20 +6750,33 @@ removed (steffen)
 2006-05-13 (bug fix)[1482718] proc re-compile: preserve the previous
 bytecode while references still on the stack (porter,ryazanov)
 
-2006-05-13 (bug fix)[943995] fixed [glob] on VFS (porter)
-
 2006-05-27 (bug fix)[923072] Darwin: made unthreaded CoreFoundation notifier
 naked-fork safe on Tiger (steffen)
 
-2006-05-31 (revert 2006-01-09)[1400572] namespace inscope & info level (porter)
-        *** POTENTIAL INCOMPATIBILITY ***
+2006-06-20 (internal change) Dropped the internal routines used to hook into
+filesystem operations back in the pre-Tcl_Filesystem days. (porter)
+***POTENTIAL INCOMPATIBILITY***
+For extensions and programs that have never migrated to the supported Tcl 8.4
+interface for virtual filesystems
 
-2006-06-14 (platform support)[1424909] MS VS2005 support (thoyts)
+2006-07-05 (enhancement) Expression parser rewrite avoids stack overflow,
+reduces from O(N^2) to O(N) complexity, and greatly improves syntas error
+messages (porter)
+***POTENTIAL INCOMPATIBILITY***
+For any code relying on exact error messages.
 
 2006-07-20 (platform support) Mac OS X weak linking (steffen)
 
 2006-07-20 (bug fix) Darwin: execve() works iff event loop not yet run (steffen)
 
+2006-07-24 (bug fix)[1518166] Uninitialized Tcl_DString (afredd)
+
+2006-07-30 (bug fix)[1426279,1505383,1494664,1531530] [clock] fixes (kenny)
+
+2006-08-09 (bug fix)[1531184] [dict for {file stat} x {}] crash (fellows)
+
+2006-08-10 (bug fix)[1538262,1530474] code cleanup; optimizations (afredd)
+
 2006-08-18 (bug fix) intermittent failures in TclUnixWaitForFile() (steffen)
 
 2006-08-18 (platform support) Darwin x86_64 (steffen)
@@ -6397,61 +6785,168 @@ naked-fork safe on Tiger (steffen)
 
 2006-08-21 (bug fix) Darwin: recursively called event loop (steffen)
 
+2006-08-21 (enhancement) Darwin: nanosec resolution clicks and [time] (steffen)
+
+2006-08-28 (bug fix)[1547681] TclFormatObj count arguments (mistachkin,porter)
+
+2006-08-28 (bug fix) stack.test failure on FreeBSD (mistachkin)
+
 2006-08-30 (bug fix)[1548263] filesystem segfaults (hobbs,mccormack)
 
+2006-08-31 (bug fix)[1541274] [expr {sqrt(-1)}] => -NaN (suchenwirth,porter)
+
 2006-09-06 (bug fix)[999544] use of MT-safe system calls (vasiljevic)
 
 2006-09-10 (platform support) Darwin: msgcat use CFLocale (steffen)
-=> msgcat 1.3.4
+=> msgcat 1.4.2
+
+2006-09-10 (new feature) tcltest option: -verbose line (steffen)
+=> tcltest 2.3a1
+
+2006-09-19 (bug fix)[1555271,1561260] Several ** operator bugs (porter)
 
 2006-09-22 (bug fix)[1562528] NULL terminates variadic calls (fellows,ryazanov)
 
+2006-09-22 (new feature)[1520767][TIP 268] [package] alpha/beta version;
+[package require] ranges, [package prefer] selection mode (kupries)
+
 2006-09-26 (platform support) MSVC8 AMD64 support (thoyts)
 
+2006-09-27 (bug fix)[1567222] bignum << errors (porter)
+
+2006-09-30 (enhancement)[1190441] quiet no-op [history] (sofer)
+
+2006-10-04 clock tzdata updated to Olson's tzdata2006m (kenny)
+
 2006-10-05 (bug fix)[1570718] make [lappend $nonList] complain (sofer,virden)
 
 2006-10-05 (bug fix)[1122671] alignment fixes in unicode encoding routines
 (hobbs,staplin)
 
-2006-10-05 (new feature) [set ::http::strict 1] (default value is 0) to enable
+2006-10-05 (enhancement) Allow "_" in Tcl Module filenames (kupries)
+
+2006-10-05 (new feature) [set ::http::strict 0] (default value is 1) to disable
 URL validity checking against RFC 2986 (hobbs)
 => http 2.5.3
 
---- Released 8.4.14, October 19, 2006 --- See ChangeLog for details ---
+2006-10-06 (new feature)[1565751][TIP 275] [binary scan] unsigned (thoyts)
+
+2006-10-10 (bug fix)[1566526] crash cleaning up [namespace path] data (porter)
+
+2006-10-12 (bug fix)[1576006] better error messages from [interp alias] (sofer)
+
+2006-10-13 (platform support) get stack size on Darwin (steffen)
+
+--- Released 8.5a5, October 20, 2006 --- See ChangeLog for details ---
+
+2006-10-20 (configure change) Added autodetection for OS-supplied timezone
+files (max)
+
+2006-10-23 (enhancement)[1577278] Ensure the Tcl call stack always has a
+CallFrame, even at level 0 (sofer)
+	*** POTENTIAL INCOMPATIBILITY for users of tclInt.h ***
+
+2006-10-23 (enhancement)[1577492] Tcl_PushCallFrame and [info level]
+enhanced for ensemble rewrites (sofer)
+	*** POTENTIAL INCOMPATIBILITY for [info level 0] on interp alias ***
+
+2006-11-02 (feature change)[TIP 293] Replace {expand} with {*} (hobbs)
+	*** POTENTIAL INCOMPATIBILITY with previous 8.5 alphas only ***
+
+2006-11-04 (new feature)[TIP 274] Exponentiation operator is right
+associative (porter)
+
+2006-11-09 (new feature)[TIP 272] Added [lreverse] and [string reverse]
+commands (fellows)
+
+2006-11-14 (new feature)[TIP 261] [namespace import] returns list of
+imported commands (porter)
 
-2006-10-31 (platform support)[1582769] Fix build with VC2003 (thoyts)
+2006-11-15 (new feature)[TIP 270] New C routines Tcl_ObjPrintf,
+Tcl_AppendObjToErrorInfo, Tcl_Format, Tcl_AppendLimitedToObj,
+Tcl_AppendFormatToObj, Tcl_AppendPrintfToObj (porter)
 
-2006-11-07 (bug fix)[1586470] [file copy] on afs (kupries,dionizio)
+2006-11-22 (feature change) Moved TCL_REG_BOSONLY from tcl.h to tclInt (porter)
+
+2006-11-22 (new feature)[TIP 269] Added [string is list] classification
+command (mistackin, fellows)
+
+2006-11-25 (new feature)[TIP 174] Added commands corresponding to most
+expr operators in ::tcl::mathop (fellows)
 
 2006-11-26 (platform support)[1230558] --enable-64bit on more systems (steffen)
 
-2006-11-27 (bug fix)[1602208] use > 32 async sockets on 64bit system (fontaine)
+2006-11-27 (bug fix)[1602208] Fix 64-bit handling of select() on unix where
+fd was greater than 32 (fontaine, kenny)
 
-2007-01-25 (configure change) ensure CPPFLAGS env var used when set (steffen)
+2006-11-28 (new feature)[TIP 280] Added [info frame] command for more
+Tcl-level debugging information (kupries)
 
-2007-01-30 (enhancement) new target: `install-private-headers` (hobbs, steffen)
+2006-12-01 (feature change)[TIP 298] Change Tcl_GetBignumAndClearObj to
+Tcl_TakeBignumFromObj (porter)
 
-2007-02-12 (bug fix)[1516109] escape encodings crossing chan buffers (dejong)
+2006-12-01 (new feature)[TIP 287] Added [chan pending] subcommand (cleverly)
 
-2007-03-01 (bug fix)[1671138] compiled [foreach {} x {}] hangs (fellows)
+2006-12-01 (new feature)[TIP 299] Added isqrt() expr operator (kenny)
 
-2007-03-10 (bug fix)[1675116] list shimmer crash in [lsort] (fellows)
+2006-12-04 (new feature)[TIP 267] Added -ignorestderr option to exec (fellows)
 
-2007-03-13 (bug fix)[1671087] list shimmer crash in [foreach] (porter)
+2006-12-05 (new feature)[TIP 291] ::tcl_platform(pointerSize) key (kupries)
 
-2007-03-13 (bug fix)[1669489] list shimmer crash in [array set] (porter)
+2007-01-11 (configure change) Remove "-Wconversion" from deflt CFLAGS (english)
 
-2007-03-17 (bug fix)[1682211] buffer overflow in [registry keys] (kenny)
-=> registry 1.1.5
+2007-01-25 (configure change) Ensure CPPFLAGS env var is used when set (steffen)
+
+2007-02-19 (configure change) Use SHLIB_SUFFIX=".so" on HP-UX IA64 (was
+".sl") (hobbs)
+
+2007-02-20 (bug fix)[1479814] Handle Windows NT \\?\... extended paths (thoyts)
+
+2007-03-01 (bug fix)[1671138] Fix infinite loop in compiled foreach with an
+empty list (fellows)
+
+2007-03-07 (enhancement) Improved Windows time zone tables to handle new US
+DST rules (kenny)
+
+2007-03-09 (enhancement) Improved Y2038 compliance of zoneinfo files (kenny)
+
+2007-04-02 (enhancement) Added bytecode compilation for global, variable,
+upvar and namespace upvar (sofer)
 
-2007-04-29 (bug fix) fts_open() crash on 64bit Darwin 8 or earlier (steffen)
+2007-04-20 (bug fix) Improve clock localization for Japanese locale (kenny)
 
---- Released 8.4.15, May 25, 2007 --- See ChangeLog for details ---
+2007-04-20 (enhancement) Document Tcl_SetNotifier & Tcl_ServiceModeHook (kenny)
+
+2007-04-23 (bug fix) fts_open() crash on 64bit Darwin 8 or earlier (steffen)
+
+--- Released 8.5a6, April 25, 2007 --- See ChangeLog for details ---
+
+2007-04-30 (bug fix)[1705778] many valgrind-detected leaks corrected
+
+2007-05-01 (bug fix)[1710709] leak in [string map] (porter)
+
+2007-05-02 (bug fix)[1710707] leaks in filesystem paths (mistachkin,kenny)
+
+2007-05-18 (feature change) {expand} syntax support removed. (porter)
+	*** POTENTIAL INCOMPATIBILITY with previous 8.5 alphas only ***
 
 2007-05-29 (bug fix)[1712723] Joinable thread death on 64-bit (virden,hobbs)
 
+2007-05-30 (feature change)[1725186] When expanded literals are parsed,
+(example: {*}{1 2 3}), TCL_TOKEN_EXPAND_WORD token is no longer returned.
+Tokens reflecting the expansion are returned instead. (porter)
+	*** POTENTIAL INCOMPATIBILITY with previous 8.5 alphas only ***
+
 2007-06-06 (platform support) Darwin: add plist to tclsh (steffen)
 
+2007-06-12 (enhancement) [info] is now a [namespace ensemble] (fellows)
+
+2007-06-20 (enhancement) better `make html` results (hobbs)
+
+2007-06-21 (feature change)[1740962] leave traces created during execution
+of traced command do not fire (sofer)
+	*** POTENTIAL INCOMPATIBILITY ***
+
 2007-06-23 (bug fix) Darwin: prevent post-fork() abort() (steffen)
 
 2007-06-27 (bug fix)[1743941] Infinite loop in Tcl_CreateTrace traces (porter)
@@ -6460,69 +6955,734 @@ URL validity checking against RFC 2986 (hobbs)
 
 2007-06-30 (bug fix)[1726873] crash in thread sync objects (vasiljevic,twylite)
 
+2007-06-30 (bug fix)[1717186] [lsort -command \{ $l] leak (afredd,fellows)
+
 2007-07-05 (bug fix)[1743676] no command named "" error message (porter,virden)
 
+2007-07-11 (bug fix)[1752146] [while 1 {}] & [interp limit] on commands (sofer)
+
+2007-07-31 (bug fix)[681877] tcl_platform(user) from system, not env (fellows)
+
+2007-07-31 (enhancement)[1750051] space efficiency of Tcl variables (sofer)
+	*** POTENTIAL INCOMPATIBILITY for C code that accesses internal
+	Tcl structs Var, Bytecode, Namespace, or CallFrame. ***
+
+2007-08-01 (enhancement)[1764318] word.tcl proc rewrites (petasis,fellows)
+
+2007-08-08 (bug fix)[1770224] [tcl::mathop::>> $big1 $big2] errors (porter)
+
 2007-08-14 (platform support) Darwin [load] from VFS on intel & 64bit (steffen)
 
-2007-08-25 (bug fix)[1751117] [clock format ... %c] buffer overrun (kenny)
+2007-08-15 (bug fix)[1773127] corrected open mode "a+" (rottman,fellows)
+
+2007-08-16 (bug fix)[1773040] ::errorInfo trace crash (janssen,porter)
+
+2007-08-16 (performance)[1564517] pre-compile constant expressions (porter)
+
+2007-08-21 (bug fix)[1775878] 'puts \' in interactive tclsh failed to move to
+prompt for continuation line (porter)
+
+2007-08-25 (bug fix)[1781282] [clock scan] case senstivity (kenny)
+
+2007-08-25 (performance)[1767293] ** on native integer types (kenny)
+
+2007-09-03 clock tzdata updated to Olson's tzdata2007g (kenny)
+
+2007-09-06 (platform support) Darwin: drop support for Xcode 1.5 project, add
+project for Xcode 3.0 (steffen)
+
+2007-09-08 (bug fix)[1786481] nested [dict update] crash (fellows)
+
+2007-09-08 (bug fix)[1710710] TclPtrSetVar leak (mistachkin,sofer)
+
+2005-09-09 (feature removed) Tcl_ObjType "nsName" no longer registered (porter)
+	*** POTENTIAL INCOMPATIBILITY for Tcl_GetObjType("nsName") ***
 
 2007-09-10 (bug fix)[1740631] Linked variable unlink prevention (maros,hobbs)
 
-2007-09-11 (platform support) Windows AMD64 support (thoyts)
+2007-09-11 (bug fix)[1786481] [dict update] stack management (sofer)
+	*** POTENTIAL INCOMPATIBILITY with previous 8.5 alpha bytecode only ***
+
+2007-09-11 (bug fix)[1578344] [package require -exact] 8.4 compat (porter)
+	*** POTENTIAL INCOMPATIBILITY with previous 8.5 alphas only ***
 
 2007-09-11 (bug fix)[1772989,1071322] Support _, : in test constraints (porter)
-=> tcltest 2.2.9
+=> tcltest 2.3b1
+
+2007-09-11 (platform support) Windows AMD64 support (thoyts)
 
 2007-09-14 (enhancement)[1793984] DTrace provider for Tcl (steffen)
 
+2007-09-14 (bug fix)[1519940] surplus ns path invalidation (fellows,bauer)
+
 2007-09-15 (platform support) SunOS-5.1x link with cc, not ld (steffen)
 
---- Released 8.4.16, September 21, 2007 --- See ChangeLog for details ---
+2007-09-17 (platform support)[1748251] Fix NetBSD link failures (english)
+
+(bug fix)[1066755] Several stack efficiency efforts increases recursion limit
+on Windows to be larger than the default [interp recursionlimit] value
+
+--- Released 8.5b1, September 26, 2007 --- See ChangeLog for details ---
+
+2007-10-02 (bug fix)[1806422] proper [tcl::tm::path] autoload (porter)
+
+2007-10-02 (bug fix) Improve Tcl_DecrRefCount() robustness (staplin)
 
-2007-10-03 (bug fix) Corrected find of deleted command (sofer,neumann)
+2007-10-11 (bug fix)[1805887] [string is int -failindex] for 0o, 0b (porter)
 
 2007-10-15 (bug fix)[1813528] Tcl_ParseBraces read past buffer (mistachkin)
 
-2007-10-30 (bug fix)[1810264] stop panic in RE lexer (fellows)
+2007-10-25 (bug fix)[1726873] intermittent crash in threads (vasiljevic)
+
+--- Released 8.5b2, October 26, 2007 --- See ChangeLog for details ---
+
+2007-10-27 (bug fix)[1821159] fixed broken compile on x86_64 (sofer)
+
+2007-10-27 (bug fix)[1810264] stop panic in RE lexer (fellows)
+
+2007-10-28 (enhancement)[1826906] Embed iso8859-1 encoding in libtcl (fellows)
+
+2007-11-01 (bug fix)[1808258] [string is ascii \000] (fellows)
+
+2007-11-05 (bug fix)[1823576] [fconfigure $serial -xchar \000] (cassof)
+
+2007-11-07 (performance)[1827996] binary glob matching (hobbs)
+
+2007-11-07 (performance) binary [gets] (hobbs)
+
+2007-11-09 (performance)[1829248] interp state reset (sofer)
+
+2007-11-10 (performance) stack checking (sofer)
+
+2007-11-10 (performance) list indexing bytecode (sofer)
+
+2007-11-11 (performance)[1830038] macros to fetch Tcl_Obj intreps (sofer)
+
+2007-11-11 (performance)[1830166] RE bytecode for simple cases (hobbs)
+
+2007-11-13 (performance) [switch] & [regexp] use RE bytecode (hobbs, fellows)
+
+2007-11-14 (performance) bytecode for [info exists] (fellows)
+
+2007-11-15 (new feature)[1231022] configure option: --disable-rpath (fellows)
 
 2007-11-15 (bug fix)[1810038] infinite loop in RE compiler (lane,porter)
 
-2007-11-27 (bug fix)[1823552] encoding conversion for [info hostname] (porter)
+Many significant documentation improvements (fellows, sofer)
+
+--- Released 8.5b3, November 19, 2007 --- See ChangeLog for details ---
+
+2007-11-20 (enhancement) string rep of dict has stable order (fellows)
+
+2007-11-21 (enhancement) compiled ensemble support (fellows)
+
+2007-11-22 (enhancement) [dict] is now an ensemble (fellows)
+
+2007-11-23 (enhancement) [string] is now an ensemble (fellows)
+
+2007-11-26 (bug fix)[1815573] Correct stack checking failure (sofer,golovan)
+
+2007-11-27 (bug fix)[800753] Document single byte char limit for
+[chan configure -eofchar] (cassoff)
+
+2007-12-03 (enhancement)[1836519] [switch $val $body] safe/fast (fellows,spjuth)
+
+2007-12-03 (release) tcltest package bump to 2.3.0 (porter)
+
+2007-12-03 (bug fix)[1618235] fix BSD compile errors (fellows)
 
 2007-12-05 (bug fix)[1844789] fix [lsearch -exact -integer] crash (fellows)
 
-2007-12-13 (bug fix)[1773127] corrected open mode "a+" (rottman,fellows)
+2007-12-05 (performance)[1845092] Tcl_ObjType for channel names (hobbs)
+
+2007-12-14 (bug fix)[1602539] NUL pollution in [glob] result (hobbs)
+
+2007-12-17 (bug fix)[1851832,1851524] memory alignment correction (sofer)
 
 2007-12-18 (bug fix)[1810264] revised regexp engine to prevent debilitating
 over-consumption of resources (drewry,lane,ormandy,fellows)
 
---- Released 8.4.17, January 4, 2008 --- See ChangeLog for details ---
+Several documentation and release notes improvements
+
+--- Released 8.5.0, December 20, 2007 --- See ChangeLog for details ---
+
+2007-12-23 (bug fix)[1857126] restore backref support to regexps (hobbs)
+
+2007-12-26 (enhancement)[1856994] [lsort] performance (sofer)
+
+2008-01-10 (bug fix)[1867855] fix [format %lli 0] crash (porter)
+
+2008-01-11 (bug fix)[1850424,1860425] stack checking on *bsd (sofer,noble)
 
 2008-01-13 (bug fix)[1353846] crash in read-only serial (hobbs,newman)
 
+2008-01-15 (bug fix)[1869989] mem leak; expr literals (porter,melbardis)
+
+2008-01-20 (bug fix)[1869405] binary [gets]; stacked channels (hobbs,ficicchia)
+
+2008-01-22 (bug fix)[1867855] fix [lreverse {}] crash (sofer,madden)
+
 2008-01-30 (bug fix)[1882373] fix Tcl_GetAlias pointer code (an00na)
 
---- Released 8.4.18, February 8, 2008 --- See ChangeLog for details ---
+Several documentation and release notes improvements
+
+--- Released 8.5.1, February 5, 2008 --- See ChangeLog for details ---
+
+2008-02-06 (enhancement) [clock format] performance (kenny)
+
+2008-02-12 (bug fix)[1891827] compiled [switch -nocase] error (fellows)
 
 2008-02-22 (bug fix)[1818565] missing state array in http::status (thoyts)
 => http 2.5.4
 
-2008-02-26 (bug fix) possible crash in [gets] (hobbs)
+2008-02-26 (bug fix)[1868845] corrected [eof] ordering (thoyts)
 
 2008-02-26 (new feature) [http::meta] command (thoyts)
 => http 2.5.5
 
+2008-02-26 (bug fix)[1902436] fixed regexps ending in \* (hobbs)
+
+2008-02-27 (bug fix)[1862555,1902423] [clock] range & l10n (kenny)
+
+2008-02-28 (bug fix) [return -level 0] memory leak (porter)
+
+2008-02-28 (bug fix) [format %llx $big] memory leak (porter)
+
+2008-02-28 (bug fix) expression parser error message memory leak (porter)
+
+2008-02-28 (bug fix) memory leak when enter trace modifies command (porter)
+
+2008-02-29 (enhancement) Consumer refcounting for Tcl_SetReturnOptions()
+and Tcl_AddObjToErrorInfo() (spjuth,porter)
+	*** POTENTIAL INCOMPATIBILITY ***
+
 2008-03-07 (bug fix)[1899164] Avoid expr and script bytecode confusion (porter)
 
+2008-03-07 (bug fix)[1904907] finalize crash in Tcl_GetReturnOptions (kupries)
+
+2008-03-10 (bug fix)[1893815] expr {abs(-1e-350)} => -0.0 (porter)
+
+2008-03-10 (bug fix)[1901113] crash in [tcl::Bgerror {} {}] (madden,porter)
+
+2008-03-11 (bug fix)[1911919] unset trace inf loop in namespace delete (sofer)
+
+2008-03-12 (new feature) some HTTP 1.1 support in http (and more!) (hobbs)
+=> http 2.7
+
+2008-03-13 (enhancement) support space in INSTALL_ROOT or $builddir (steffen)
+
+2008-03-16 (bug fix)[1903325] bytecode stack space prediction crash (fellows)
+
+2008-03-18 (bug fix)[1914604] Tcl Modules: encoding fixed to utf-8; environment
+variables without "." added to customization hooks (kupries)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2008-03-18 (bug fix)[1914503] alignment of TclStackAlloc() return (sofer)\
+
+2008-03-20 (bug fix)[1868171] expose Tcl_GetMemoryInfo (for AOLserver) (fellows)
+
 2008-03-24 (bug fix)[1923966] crash in [binary format x0s] (thoyts)
 
 2008-03-27 (platform support)[1921166] Solaris 64bit build fixes (steffen)
 
-2008-04-04 (bug fix)[780533] [fcopy -size -command] callback failure (ferrieux)
+2008-03-27 clock tzdata updated to Olson's tzdata2008b (kenny)
+
+--- Released 8.5.2, March 28, 2008 --- See ChangeLog for details ---
+
+2008-03-30 (bug fix)[1783544] more robust TclIsNaN() (kenny,teterin)
+
+2008-04-01 (bug fix)[1839067] FP round fix for Solaris/x86 (kupries,schlenker)
+
+2008-04-02 (bug fix)[780533,1932639] [fcopy] callbacks unreliable (ferrieux)
+
+2008-04-04 (bug fix) [chan postevent] crash (kupries)
+
+2008-04-07 (bug fix) Fix broken [format {% d}] (max)
+
+2008-04-07 (bug fix)[1350564] Bi-directional [fcopy] now supported (ferrieux)
+
+2008-05-07 (bug fix) [dict append] crash (mccormack,fellows)
+
+2008-05-21 (bug fix)[1968882] [info complete "\\\n"] => 0 (porter)
+
+2008-05-22 (bug fix)[1968245] Tcl_LogCommandInfo() accept length=-1 (darroch)
+
+2008-05-23 (bug fix)[1965787] 32-bit overflow in [tell] result (ferrieux)
+
+2008-06-12 (platform support) Solaris static build with DTrace (steffen)
+
+2008-06-12 (platform support) Solaris/amd64 gcc 64bit support (steffen)
+
+2008-06-20 (bug fix)[1999035] make [interp bgerror $i] act in $i (porter)
+
+2008-06-23 (bug fix)[1972879] bad path intrep caching (porter)
+
+2008-06-24 (bug fix)[1999176] crash in [glob -dir {} a] (porter)
+
+2008-06-25 (bug fix)[1999119] Support TM packages in Safe Base (kupries)
+
+--- Released 8.5.3, June 30, 2008 --- See ChangeLog for details ---
+
+2008-07-03 (bug fix)[1969717] fix package finding on Samba shares (jos)
+
+2008-07-03 (bug fix)[1987821] mem leak in [seek] on reflected chan (kupries)
+
+2008-07-20 (enhancement)[2008248] dict->list preserve item intreps (pasadyn)
+
+2008-07-21 (bug fix)[2015723] [file] bad use of inodes on Windows (thoyts)
+
+2008-07-21 (enhancement) [info frame] returns file data in more cases (kupries)
+
+2008-07-29 (bug fix)[2030670] fix rare panic in TclStackFree (pasadyn,sofer)
+
+2008-08-08 tzdata updated to Olson's tzdata2008e (kenny)
+
+2008-08-11 (bug fix)[2046846] 64bit support for http zlib crc (thoyts)
+=> http 2.7.1
+
+2008-08-11 (enhancement) automatic [package provide] for TMs (kupries)
+
+--- Released 8.5.4, August 15, 2008 --- See ChangeLog for details ---
+
+2008-08-14 (bug fix)[2055782] fix crash in [namespace inscope] (sofer)
+
+2008-08-21 (bug fix)[2065115] correct handling of ***= RE's (hobbs,porter)
+
+2008-09-10 (enhancement) efficient list->dict conversion (elby,fellows)
+
+2008-09-17 (bug fix)[2116053] export [min] and [max] from tcl::mathfunc (sofer)
+
+2008-09-27 (bug fix)[2130992] prevent overflow crash in [lrepeat] (fellows)
+
+2008-10-05 (bug fix)[2143288] correct bad isqrt() results (boffey,kenny)
+
+2008-10-08 (bug fix)[2151707] fix stack trace from variable trace (porter)
+
+--- Released 8.5.5, October 15, 2008 --- See ChangeLog for details ---
+
+2008-10-24 (bug fix) fix failure to read SHOUTcast streams (thoyts)
+=> http 2.7.2
+
+2008-11-10 (bug fix)[2255235] [platform::shell::LOCATE] update (ring,kupries)
+=> platform::shell 1.1.4
+
+2008-11-13 (bug fix)[2269431] VFS [load] -> tempfile litter (ficicchia,nijtmans)
+
+2008-11-30 (bug fix)[2362156] [clock]: colon in format string (mizuno,kenny)
+
+2008-12-01 (bug fix)[2251175] [{*}{\{}] errors (hellström,ferrieux,porter)
+
+2008-12-02 (bug fix)[2270477] hang in channel finalization (ferrieux,kupries)
+
+2008-12-04 (bug fix)[2385549] [file normalize] failed on some paths (porter)
+
+2008-12-10 tzdata updated to Olson's tzdata2008i (kenny)
+
+2008-12-11 (bug fix)[2407783] spoil ChannelState when channel name passes
+among multiple interps (kupries)
+
+2008-12-21 (bug fix) Fix ability to join threads on 64-bit Windows (thoyts)
+
+2008-12-21 (bug fix)[2114900] updated tclIndex file (cassoff,kenny)
+
+--- Released 8.5.6, December 21, 2008 --- See ChangeLog for details ---
+
+2009-01-03 (bug fix)[2481670] [clock add] error message (talvo)
+
+2009-01-19 (new feature) CONFIG_INSTALL_DIR - where tclConfig.sh goes (cassoff)
+
+2009-01-19 (platform support) better tools for BSD ports (cassoff)
+
+2009-01-21 (bug fix)[2458202] exit crash with [chan create]d channel (kupries)
+
+2009-01-29 (bug fix)[2519474] Tcl_FindCommand() bug exposed by oo (fellows)
+
+2009-02-04 (bug fix)[2561746] [string repeat] overflow crash (porter)
+
+2009-02-17 (platform support) MSVC and _WIN64 (hobbs)
+
+2009-02-20 (bug fix)[2571597] [file pathtype /a] wrong result (nadkarni,porter)
+
+2009-03-15 (platform support) translate SIGINFO where defined (BSD) (teterin)
+
+2009-03-18 (bug fix)[2688184] memleak in [file normalize] (mistachkin)
+
+2009-03-20 (bug fix)[2597185] crash in Tcl_AppendStringToObj (porter)
+
+2009-03-27 (bug fix)[2710920] [file dirname|tail /foo/] errors (epler,porter)
+
+2009-03-30 (bug fix)[2603158] Tcl_AppendObjToObj: append to self crash (porter)
+
+2009-04-07 (bug fix)[2561794,2669109,2494093,2553906] string overflow (porter)
+
+2009-04-08 (bug fix)[2570363] unsafe [eval]s in tcltest (bron,porter)
+=> tcltest 2.3.1
+
+2009-04-08 (platform support) more Darwin kernel patterns (steffen)
+=> platform 1.0.4
+
+2009-04-09 (bug fix)[26245326] [http::geturl] connection failures (golovan)
+=> http 2.7.3
+
+2009-04-10 (new feature) Darwin: embeddable CoreFoundation notifier (steffen)
+
+2009-04-10 (bug fix)[1961211]  Darwin [load] back-compatibility (steffen)
+
+2009-04-14 tzdata updated to Olson's tzdata2009f (kenny)
+
+--- Released 8.5.7, April 15, 2009 --- See ChangeLog for details ---
+
+2009-04-27 (bug fix)[2446662] uniformly declare EOF on RST on sockets (ferrieux)
+
+2009-04-27 (bug fix)[1028264] delay WSACleanup() from under our feet (ferrieux)
+
+2009-05-07 (bug fix)[2785893] find command in deleted namespace (sofer)
+
+2009-05-29 (platform support) account for ia64_32 (kupries)
+=> platform 1.0.5
+
+2009-06-02 (bug fix)[2798543] incorrect [expr] integer ** results (porter)
+
+2009-06-10 (bug fix)[2801413] overflow in [format] (porter)
+
+2009-06-13 (bug fix)[2802881] corrected compile env context (tasada,porter)
+
+2009-07-01 (bug fix)[2806622] Win: bad tcl_platform(user) value (thoyts)
+
+2009-07-16 (bug fix)[2819200] underflow settings on MIPS systems (porter)
+
+2009-07-23 (bug fix)[2820349] plug event leak in notifier (mistachkin)
+
+2009-07-24 (bug fix)[2826248] crash in Tcl_GetChannelHandle (sonnenburg,kupries)
+
+2009-07-31 (bug fix)[2830354] overflow in [format] (misch,porter)
+
+2009-08-06 (bug fix)[2827000] reflected channels can signal EGAIN (kupries)
+
+2009-08-20 (bug fix)[2806250] EIAS violation in ~foo pathnames (porter)
+
+2009-08-21 (bug fix)[2837800] [glob */foo] return ./~x/foo (porter)
+
+2009-08-24 (bug fix) nested event loop notifier w/TkAqua Cocoa (alaoui,steffen)
+
+2009-08-25 (bug fix) [info frame] account for continuation lines (kupries)
+
+2009-08-27 (bug fix)[2845535] overflows in [format] (porter)
+
+2009-09-01 (bug fix) improved error message in tcltest (porter)
+=> tcltest 2.3.2
+
+2009-09-11 (bug fix)[2849860] http handle "quoted" charset value (fellows)
+=> http 2.7.4
+
+2009-10-04 (bug fix)[2569449] Core Foundation memory bug in Tiger (steffen)
+
+2009-10-06 (bug fix)[1941434] broken tclTomMath.h includes (porter)
+
+2009-10-07 (bug fix)[2871908] leaked hash table (mistachkin,kupries)
+
+2009-10-08 (bug fix)[2874678] bignum leak in [dict incr] (fellows)
+
+2009-10-17 (bug fix)[2629338] crash in var unset traces (raney,fellows)
+
+2009-10-19 (bug fix)[2107634] extend [read] and [gets] to Tcl string limits
+(morrison,parker,porter)
+
+2009-10-21 (bug fix)[2882561] Haiku OS signal support (morrison,fellows)
+
+2009-10-24 Broken DST applied EU rules to US zones (lehenbauer,kenny)
+
+2009-10-29 (bug fix)[2800740] halved bignum memory on 64-bit systems (porter)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2009-11-03 tzdata updated to Olson's tzdata2009q (kenny)
+
+2009-11-03 (bug fix)[2854929] TM search path support in Safe Base (kupries)
+
+2009-11-11 (bug fix)[2888099] [close] loses ENOSPC error (khomoutov,ferrieux)
+
+2009-11-11 (bug fix)[2891171] RFC 3986 compliance for ? in URL (nijtmans)
+=> http 2.7.5
+
+2009-11-12 (bug fix)[2895565] [fcopy -size] miscounts when converting encodings
+(kupries)
+
+--- Released 8.5.8, November 16, 2009 --- See ChangeLog for details ---
+
+2009-11-16 (bug fix)[2891556] encoding finalization crash (mistachkin,ferrieux)
+
+2009-12-09 (enhancement) rewrite of the Safe Base commands (kupries)
+
+2009-12-16 (bug fix)[2913616] msgcat: improved safe interp support (fellows)
+=> msgcat 1.4.3
+
+2009-12-23 (bug fix)[2913625] [info script/nameof] in safe interps (fellows)
+
+2009-12-28 (bug fix)[2891362] enable time limit in child interps (fellows)
+
+2009-12-28 (bug fix)[2895741] enable min(), max() in safe interps (fellows)
+
+2010-01-05 (bug fix)[2918610] [file rootname] corruption (magerya,porter)
+
+2010-01-06 (enhancement) Haiku, CYGWIN support improvements (nijtmans)
+
+2010-01-18 (bug fix)[2932421] less [format %s] shimmer (ferrieux)
+
+2010-01-18 (bug fix)[2918110] [chan postevent] crash (bron,kupries)
+
+2010-02-01 (bug fix)[2942697] faster match: some pathological regexp patterns
+(lane,fellows)
+
+2010-02-02 (bug fix)[2939073] [array unset] unset trace crash (ferrieux)
+
+2010-02-02 (bug fix)[2933089] [info frame] shared lit trouble (kupries)
+
+2010-02-11 (bug fix)[2949740] [open |noSuch rb] crash (kovalenko,fellows)
+
+2010-02-11 (bug fix)[2954959] get sign of abs($zero) right (nijtmans)
+
+2010-03-09 (bug fix)[2936225] stop [chan copy] to slow channel consuming all
+memory with buffer backup (ferrieux)
+
+2010-03-20 (enhancement) permit [fcopy] of > 2**31 bytes (fellows)
+
+2010-03-24 (bug fix)[2383005] [return -errorcode] reject non-list (porter)
+
+2010-03-25 (bug fix)[2976504] broken fstatfs() call (reeuwijk,fellows)
+
+2010-03-30 (bug fix)[2978773] refchan mem preservation (kupries)
+
+2010-05-19 (bug fix)[3004007] dict/list shimmer w/o string rep loss (fellows)
+
+2010-06-09 (bug fixes) platform: several fixes for 64 bit systems (kupries)
+=> platform 1.0.9
+
+2010-06-16 (bug fix)[3016135] [clock format] in he_IL locale (nijtmans)
+
+2010-06-28 (bug fix)[3019634] support errno.h changes in MSVC++ 2010 (nijtmans)
+
+2010-07-02 (enhancement) -errorcode for [expr] domain errors (fellows)
+
+2010-07-28 (bug fix)[3037525] crash deleting vars @ callframe pop (sofer)
+
+2010-08-04 (bug fix)[3034840] mem corrupt when refchan loses interp (kupries)
+
+2010-08-04 (enhancement) Win [load] use LOAD_WITH_ALTERED_SEARCH_PATH (hobbs)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2010-08-12 (bug fix)[2826551] line-sensitive matching in regexp (dejong)
+
+2010-08-19 (bug fix)[3048354] buffer overflow detect in Fortify build (fellows)
+
+2010-08-23 tzdata updated to Olson's tzdata2010l (kenny)
+
+2010-09-01 (bug fix)[3057639] no read traces [lappend arr(elem) ...] (hobbs)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+--- Released 8.5.9, September 8, 2010 --- See ChangeLog for details ---
+
+2010-09-24 (bug fix)[3056775] race condition in Win sockets (twylite,kupries)
+
+2010-10-23 (update)[3085863] Update Unicode data to 6.0 (nijtmans)
+
+2010-11-02 Safe Tcl handling of empty path lists (cassoff)
+
+2010-11-03 (bug fix)[3098302] crash in compiled [catch] (kenny)
+
+2010-11-15 (TIP 378)[3081184] improved TIP 280 performance (kupries)
+
+2010-11-30 (enhancement) Restore TclFormatInt for performance (hobbs)
+
+2010-11-30 (enhancement) Tcl_PrintDouble performance improvements (kenny)
+
+2010-12-12 (platform) OpenBSD build improvements (cassoff)
+
+2010-12-17 (platform) Revisions to support rpm 4.4.2 (cassoff)
+
+2011-01-13 (bug fix)[3142026] GrowEvaluationStack OBOE (harder,sofer)
+
+2011-01-19 (bug fix)[3072640] protect writes to ::error* variables (sofer)
+
+2011-03-06 (bug fix)[3200987,3192636] parser buffer overruns (porter)
+
+2011-03-08 (bug fix)[3202905] failed intrep release of interp result (mccormack)
+
+2011-03-09 (bug fix)[3202171] repair [namespace inscope] optimizer (porter)
+
+2011-03-14 (bug fix) Fixes from libtommath 0.42.0 release (fellows)
+
+2011-03-21 (bug fix)[3216070] [load] extension from embed Tcl apps (nijtmans)
+	***POTENTIAL INCOMPATIBILITY***
+
+2011-04-12 (bug fix)[3285472] intrep corruption in [string reverse] (porter)
+
+2011-04-13 (bug fix)[2662380] crash when variable append trace unsets (sofer)
+
+2011-04-13 (bug fix)[3285375] Buffer overflow in [concat] (porter)
+
+2011-05-02 (internals change) revised TclFindElement() interface (porter)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2011-05-05 (enhancement) dict->list w/o string rep generation (porter)
+
+2011-05-10 (bug fix)[3173086] Crash parsing long lists (rogers,porter)
+
+2011-05-12 (bug fix)[2715421] surplus \n in POST (passadyn,thoyts)
+=> http 2.7.6
+
+2011-05-24 tzdata updated to Olson's tzdata2011g (iyer)
+
+2011-05-25 (enhancement) msgcat internal improvements (fellows)
+=> msgcat 1.4.4
+
+2011-06-02 (bug fix)[3185407] cmd resolution epoch flaw (nadkarni,fellows)
+
+2011-06-13 (bug fix)[3315098] mem leak generating double string rep (neumann)
+
+2011-06-21 (new cmd) [tcltest::loadIntoSlaveInterpreter] (fellows)
+=> tcltest 2.3.3
+
+2011-06-22 (new feature) DEB_HOST_MULTIARCH support (kupries)
+=> platform 1.0.10
+
+--- Released 8.5.10, June 23, 2011 --- See ChangeLog for details ---
+
+2011-07-02 (bug fix)[3349507] correct double(1[string repeat 0 23]) (kenny)
+
+2011-07-19 (bug fix)[3371644] Tcl_ConvertElement() segfault (sader, ferrieux)
+
+2011-07-21 (bug fix)[3372130] hypot(.) segfault (nijtmans)
+
+2011-08-12 (bug fix)[3389764] memleaks due to reference cycles in dup'd paths
+
+2011-08-15 (bug fix)[3390272] leak of [info script] value (porter)
+
+2011-08-17 (bug fix)[3393150] bignum leaks in Tcl_Get*() routines (porter)
+
+2011-08-18 (bug fix)[3393714] [string toupper] overflow (nijtmans)
+
+2011-08-30 (bug fix)[3398794] panic in interp limit setting (gavlian,fellows)
+
+2011-09-08 (bug fix)[3401704] revised expr parser to permit function names
+like "nano()" instead of parsing as "nan o()" with missing op (duquette,porter)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2011-09-13 (bug fix)[3390638] solaris studio cc workaround (kechel,porter)
+
+2011-09-13 (bug fix)[3405652] DTrace workaround (michelson,porter)
+
+2011-09-16 (bug fix)[3391977] -headers overrides -type (ziegenhagen,fellows)
+=> http 2.7.7
+
+2011-09-16 (bug fix)[3400658] wrong num args msg with TclOO (rsooltan,fellows)
+
+2011-10-11 (bug fix)[2935503] [file stat] returns bad mode (nadkarni,nijtmans)
+
+2011-10-15 tzdata updated to Olson's tzdata2011l (iyer)
+
+--- Released 8.5.11, November 4, 2011 --- See ChangeLog for details ---
+
+2011-11-22 (bug fix)[3354324] Win: [file mtime] sets wrong time (nijtmans)
+
+2011-11-30 (bug fix)[967195] Simply args passed to child processes (nijtmans)
+=> tcltest 2.3.4
+
+2011-12-07 (bug fix)[3444754] fix [string tolower \u01C5] (nijtmans)
+
+2011-12-11 (update)[3457031] Update [[:print:]] to Unicode 6.0 (nijtmans)
+
+2011-12-24 (bug fix)[3464428] fix [string is graph \u0120] (nijtmans)
+
+2012-01-08 (bug fix)[3470928] zoneinfo trouble with Windhoek data file (kenny)
+
+2012-01-13 (bug fix)[3472316] fix retrieval of socket error (fellows)
+=> http 2.7.8
+
+2012-01-21 (bug fix)[3475667] [regexp] buffer read overflow (sebres)
+
+2012-01-22 (bug fix)[3475264] [dict exists] return 0, not error (fellows)
+
+2012-01-26 (bug fix)[3475569,3479689] mem corrupt in fs path (sebres,porter)
+
+2012-02-02 (bug fix)[2974459,2879351,1951574,1852572,1661378,1613456] Fix
+problems where [file *able] would return false results on Win/Samba (porter)
+
+2012-02-02 (update)[3464401] Support Unicode 6.1 (nijtmans)
+
+2012-02-06 (bug fix)[3484621] bump bytecode epoch on exec traces (kuhn,sofer)
+
+2012-02-09 (bug fix)[3484402] mem corrupt OBOE in unicode append (porter)
+
+2012-02-15 (bug fix)[3487626] crash compiling [dict for] (fellows)
+
+2012-02-17 (bug fix)[2233954] compile problem on AIX & Android (nijtmans)
+
+2012-02-29 (bug fix)[3466099] BOM in Unicode (nijtmans)
+
+2012-03-07 (bug fix)[3498327] RFC 3986 compliance (kupries)
+=> http 2.7.9
+
+2012-04-11 (bug fix)[3448512] [clock scan 1958-01-01] fail on Win (nijtmans)
+
+2012-04-18 tzdata updated to Olson's tzdata2012c (kenny)
+
+2012-05-02 (enhancement) Better use of Intel cpuid instruction (nijtmans)
+
+2012-05-10 (bug fix)[473946] correct send of special characters (nijtmans)
+=> dde 1.3.3
+
+2012-05-17 (bug fix)[2964715] fix [glob] in Safe Base (fellows)
+
+2012-05-17 (bug fix)[3106532] proper [switch -indexvar] values (fellows)
+	*** POTENTIAL INCOMPATIBILITY ***
+
+2012-06-25 (bug fix)[3537605] [encoding dirs a b] error message (fellows)
+
+2012-06-25 (bug fix)[3024359] crash when multi-thread concurrent [file system]
+and Tcl_FSMountsChanged(). (porter)
+
+2012-06-29 (bug fix)[3536888] fix locale guessing (oehlmann,nijtmans)
+=> msgcat 1.4.5
+
+2012-07-05 (bug fix)[1189293] make "<<" redirect binary safe (porter)
+
+2012-07-11 (bug fix)[3362446] [registry keys] failure (nijtmans)
+=> registry 1.2.2
+
+2012-07-16 (bug fix)[3544683] reentrant syscalls on BSD (cassoff,fellows)
+
+2012-07-24 (bug fix) stop mem corruption in stacked channel events (max,porter)
+
+2012-07-25 (bug fix)[3546275] [auto_execok] search match [exec] (danckaert)
+
+Many revisions to better support a Cygwin environment (nijtmans)
+
+--- Released 8.5.12, July 27, 2012 --- See ChangeLog for details ---
+
+2012-07-27 (update)[3464401] Support Unicode 6.2 (nijtmans)
+
+2012-08-07 (bug fix)[3554250] fs segfault in thread exit handler (porter)
+
+2012-08-08 (update)[1536227] Cygwin network pathname support (nijtmans)
+
+2012-08-20 (bug fix)[3559678] [file normalize] EIAS failure (phao,dgp)
+
+2012-08-25 (bug fix)[3561330] Ukranian translation of "March" (teterin)
+
+2012-09-11 (bug fix)[3564735] mem corruption w/ Itcl's [variable] (porter)
+
+2012-09-25 (TIP 404) New msgcat commands [mcflset], [mcflmset] (oehlmann)
+=> msgcat 1.5.0
+
+2012-10-03 (bug fix) exit panic on stacked std channel (griffin,porter)
+
+2012-10-14 (bug fix) [tcl::Bgerror] crash on non-dict options (nijtmans)
+
+2012-11-06 (bug fix)[3581754] avoid multiple callback on keep-alive (fellows) 
+=> http 2.7.10
 
-2008-04-07 (new feature)[1350564] eased fileevent constraints during [fcopy]
-(ferrieux)
+2012-11-07 (bug fix)[3574493] hang in Windows socket finalization (fassel)
 
-2008-04-10 (bug fix)[1557855] crash on some [fcopy -size] values (ferrieux)
+2012-11-07 tzdata updated to Olson's tzdata2012i (kenny)
 
---- Released 8.4.19, April 18, 2008 --- See ChangeLog for details ---
+--- Released 8.5.13, November 12, 2012 --- See ChangeLog for details ---
diff --git a/compat/dirent2.h b/compat/dirent2.h
index c00d2f4..5be08ba 100644
--- a/compat/dirent2.h
+++ b/compat/dirent2.h
@@ -14,10 +14,6 @@
 #ifndef _DIRENT
 #define _DIRENT
 
-#ifndef _TCL
-#include <tcl.h>
-#endif
-
 /*
  * Dirent structure, which holds information about a single
  * directory entry.
@@ -50,8 +46,8 @@ typedef struct _dirdesc {
  * Procedures defined for reading directories:
  */
 
-extern void		closedir _ANSI_ARGS_((DIR *dirp));
-extern DIR *		opendir _ANSI_ARGS_((char *name));
-extern struct dirent *	readdir _ANSI_ARGS_((DIR *dirp));
+extern void		closedir (DIR *dirp);
+extern DIR *		opendir (char *name);
+extern struct dirent *	readdir (DIR *dirp);
 
 #endif /* _DIRENT */
diff --git a/compat/dlfcn.h b/compat/dlfcn.h
index 1a6a118..fb27ea0 100644
--- a/compat/dlfcn.h
+++ b/compat/dlfcn.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * dlfcn.h --
  *
  *	This file provides a replacement for the header file "dlfcn.h"
@@ -19,7 +19,6 @@
  */
 
 /*
- * @(#)dlfcn.h	1.4 revision of 95/04/25  09:36:52
  * This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
  * 30159 Hannover, Germany
  */
@@ -27,10 +26,6 @@
 #ifndef __dlfcn_h__
 #define __dlfcn_h__
 
-#ifndef _TCL
-#include <tcl.h>
-#endif
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -47,14 +42,14 @@ extern "C" {
  * that contains functions to be called to initialize and terminate.
  */
 struct dl_info {
-	void (*init) _ANSI_ARGS_((void));
-	void (*fini) _ANSI_ARGS_((void));
+	void (*init) (void);
+	void (*fini) (void);
 };
 
-VOID *dlopen _ANSI_ARGS_((const char *path, int mode));
-VOID *dlsym _ANSI_ARGS_((void *handle, const char *symbol));
-char *dlerror _ANSI_ARGS_((void));
-int dlclose _ANSI_ARGS_((void *handle));
+void *dlopen (const char *path, int mode);
+void *dlsym (void *handle, const char *symbol);
+char *dlerror (void);
+int dlclose (void *handle);
 
 #ifdef __cplusplus
 }
diff --git a/compat/fixstrtod.c b/compat/fixstrtod.c
index ba1a480..91f309e 100644
--- a/compat/fixstrtod.c
+++ b/compat/fixstrtod.c
@@ -20,12 +20,12 @@
  * somes systems (e.g. SunOS 4.1.4) stdlib.h doesn't declare strtod.
  */
 
-extern double strtod();
+extern double strtod(char *, char **);
 
 double
-fixstrtod(string, endPtr)
-    char *string;
-    char **endPtr;
+fixstrtod(
+    char *string,
+    char **endPtr)
 {
     double d;
     d = strtod(string, endPtr);
diff --git a/compat/gettod.c b/compat/gettod.c
index 059c36a..28e1432 100644
--- a/compat/gettod.c
+++ b/compat/gettod.c
@@ -10,18 +10,18 @@
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include "tcl.h"
 #include "tclPort.h"
 #include <sys/timeb.h>
 
 #undef timezone
 
 int
-gettimeofday(tp, tz)
-struct timeval *tp;
-struct timezone *tz;
+gettimeofday(
+    struct timeval *tp,
+    struct timezone *tz)
 {
     struct timeb t;
+
     ftime(&t);
     tp->tv_sec = t.time;
     tp->tv_usec = t. millitm * 1000;
diff --git a/compat/memcmp.c b/compat/memcmp.c
index 3a4974b..5fce528 100644
--- a/compat/memcmp.c
+++ b/compat/memcmp.c
@@ -1,24 +1,21 @@
-/* 
+/*
  * memcmp.c --
  *
  *	Source code for the "memcmp" library routine.
  *
  * Copyright (c) 1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include "tcl.h"
 #include "tclPort.h"
 
 /*
- * Here is the prototype just in case it is not included
- * in tclPort.h.
+ * Here is the prototype just in case it is not included in tclPort.h.
  */
 
-int		memcmp _ANSI_ARGS_((CONST VOID *s1,
-			    CONST VOID *s2, size_t n));
+int		memcmp(CONST VOID *s1, CONST VOID *s2, size_t n);
 
 /*
  *----------------------------------------------------------------------
@@ -28,11 +25,10 @@ int		memcmp _ANSI_ARGS_((CONST VOID *s1,
  *	Compares two bytes sequences.
  *
  * Results:
- *     compares  its  arguments, looking at the first n
- *     bytes (each interpreted as an unsigned char), and  returns
- *     an integer less than, equal to, or greater than 0, accord-
- *     ing as s1 is less  than,  equal  to,  or
- *     greater than s2 when taken to be unsigned 8 bit numbers.
+ *	Compares its arguments, looking at the first n bytes (each interpreted
+ *	as an unsigned char), and returns an integer less than, equal to, or
+ *	greater than 0, according as s1 is less than, equal to, or greater
+ *	than s2 when taken to be unsigned 8 bit numbers.
  *
  * Side effects:
  *	None.
@@ -41,10 +37,10 @@ int		memcmp _ANSI_ARGS_((CONST VOID *s1,
  */
 
 int
-memcmp(s1, s2, n)
-    CONST VOID *s1;			/* First string. */
-    CONST VOID *s2;			/* Second string. */
-    size_t      n;                      /* Length to compare. */
+memcmp(
+    CONST VOID *s1,		/* First string. */
+    CONST VOID *s2,		/* Second string. */
+    size_t n)			/* Length to compare. */
 {
     CONST unsigned char *ptr1 = (CONST unsigned char *) s1;
     CONST unsigned char *ptr2 = (CONST unsigned char *) s2;
@@ -52,9 +48,17 @@ memcmp(s1, s2, n)
     for ( ; n-- ; ptr1++, ptr2++) {
 	unsigned char u1 = *ptr1, u2 = *ptr2;
 
-	if ( u1 != u2) {
+	if (u1 != u2) {
 	    return (u1-u2);
 	}
     }
     return 0;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/compat/opendir.c b/compat/opendir.c
index 25e8392..3fe70c1 100644
--- a/compat/opendir.c
+++ b/compat/opendir.c
@@ -1,14 +1,12 @@
 /* 
  * opendir.c --
  *
- *	This file provides dirent-style directory-reading procedures
- *	for V7 Unix systems that don't have such procedures.  The
- *	origin of this code is unclear, but it seems to have come
- *	originally from Larry Wall.
+ *	This file provides dirent-style directory-reading procedures for V7
+ *	Unix systems that don't have such procedures. The origin of this code
+ *	is unclear, but it seems to have come originally from Larry Wall.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 #undef DIRSIZ
 #define DIRSIZ(dp) \
@@ -17,24 +15,28 @@
 /*
  * open a directory.
  */
+
 DIR *
-opendir(name)
-char *name;
+opendir(
+    char *name)
 {
-	register DIR *dirp;
-	register int fd;
-	char *myname;
+    register DIR *dirp;
+    register int fd;
+    char *myname;
 
-	myname = ((*name == '\0') ? "." : name);
-	if ((fd = open(myname, 0, 0)) == -1)
-		return NULL;
-	if ((dirp = (DIR *)ckalloc(sizeof(DIR))) == NULL) {
-		close (fd);
-		return NULL;
-	}
-	dirp->dd_fd = fd;
-	dirp->dd_loc = 0;
-	return dirp;
+    myname = ((*name == '\0') ? "." : name);
+    if ((fd = open(myname, 0, 0)) == -1) {
+	return NULL;
+    }
+    dirp = (DIR *) ckalloc(sizeof(DIR));
+    if (dirp == NULL) {
+	/* unreachable? */
+	close(fd);
+	return NULL;
+    }
+    dirp->dd_fd = fd;
+    dirp->dd_loc = 0;
+    return dirp;
 }
 
 /*
@@ -44,62 +46,65 @@ char *name;
 #define	ODIRSIZ	14
 
 struct	olddirect {
-	ino_t	od_ino;
-	char	od_name[ODIRSIZ];
+    ino_t od_ino;
+    char od_name[ODIRSIZ];
 };
 #else	/* a Pyramid in the ATT universe */
 #define	ODIRSIZ	248
 
 struct	olddirect {
-	long	od_ino;
-	short	od_fill1, od_fill2;
-	char	od_name[ODIRSIZ];
+    long od_ino;
+    short od_fill1, od_fill2;
+    char od_name[ODIRSIZ];
 };
 #endif
 
 /*
  * get next entry in a directory.
  */
+
 struct dirent *
-readdir(dirp)
-register DIR *dirp;
+readdir(
+    register DIR *dirp)
 {
-	register struct olddirect *dp;
-	static struct dirent dir;
+    register struct olddirect *dp;
+    static struct dirent dir;
 
-	for (;;) {
-		if (dirp->dd_loc == 0) {
-			dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf,
-			    DIRBLKSIZ);
-			if (dirp->dd_size <= 0)
-				return NULL;
-		}
-		if (dirp->dd_loc >= dirp->dd_size) {
-			dirp->dd_loc = 0;
-			continue;
-		}
-		dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc);
-		dirp->dd_loc += sizeof(struct olddirect);
-		if (dp->od_ino == 0)
-			continue;
-		dir.d_ino = dp->od_ino;
-		strncpy(dir.d_name, dp->od_name, ODIRSIZ);
-		dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */
-		dir.d_namlen = strlen(dir.d_name);
-		dir.d_reclen = DIRSIZ(&dir);
-		return (&dir);
+    for (;;) {
+	if (dirp->dd_loc == 0) {
+	    dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
+	    if (dirp->dd_size <= 0) {
+		return NULL;
+	    }
+	}
+	if (dirp->dd_loc >= dirp->dd_size) {
+	    dirp->dd_loc = 0;
+	    continue;
 	}
+	dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc);
+	dirp->dd_loc += sizeof(struct olddirect);
+	if (dp->od_ino == 0) {
+	    continue;
+	}
+	dir.d_ino = dp->od_ino;
+	strncpy(dir.d_name, dp->od_name, ODIRSIZ);
+	dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */
+	dir.d_namlen = strlen(dir.d_name);
+	dir.d_reclen = DIRSIZ(&dir);
+	return &dir;
+    }
 }
 
 /*
  * close a directory.
  */
+
 void
-closedir(dirp)
-register DIR *dirp;
+closedir(
+    register DIR *dirp)
 {
-	close(dirp->dd_fd);
-	dirp->dd_fd = -1;
-	dirp->dd_loc = 0;
-	ckfree((char *) dirp);
+    close(dirp->dd_fd);
+    dirp->dd_fd = -1;
+    dirp->dd_loc = 0;
+    ckfree((char *) dirp);
 }
diff --git a/compat/stdlib.h b/compat/stdlib.h
index 4d1a386..0ad4c1d 100644
--- a/compat/stdlib.h
+++ b/compat/stdlib.h
@@ -1,43 +1,36 @@
 /*
  * stdlib.h --
  *
- *	Declares facilities exported by the "stdlib" portion of
- *	the C library.  This file isn't complete in the ANSI-C
- *	sense;  it only declares things that are needed by Tcl.
- *	This file is needed even on many systems with their own
- *	stdlib.h (e.g. SunOS) because not all stdlib.h files
- *	declare all the procedures needed here (such as strtod).
+ *	Declares facilities exported by the "stdlib" portion of the C library.
+ *	This file isn't complete in the ANSI-C sense; it only declares things
+ *	that are needed by Tcl. This file is needed even on many systems with
+ *	their own stdlib.h (e.g. SunOS) because not all stdlib.h files declare
+ *	all the procedures needed here (such as strtod).
  *
  * Copyright (c) 1991 The Regents of the University of California.
  * Copyright (c) 1994-1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #ifndef _STDLIB
 #define _STDLIB
 
-#include <tcl.h>
-
-extern void		abort _ANSI_ARGS_((void));
-extern double		atof _ANSI_ARGS_((CONST char *string));
-extern int		atoi _ANSI_ARGS_((CONST char *string));
-extern long		atol _ANSI_ARGS_((CONST char *string));
-extern char *		calloc _ANSI_ARGS_((unsigned int numElements,
-			    unsigned int size));
-extern void		exit _ANSI_ARGS_((int status));
-extern int		free _ANSI_ARGS_((char *blockPtr));
-extern char *		getenv _ANSI_ARGS_((CONST char *name));
-extern char *		malloc _ANSI_ARGS_((unsigned int numBytes));
-extern void		qsort _ANSI_ARGS_((VOID *base, int n, int size,
-			    int (*compar)(CONST VOID *element1, CONST VOID
-			    *element2)));
-extern char *		realloc _ANSI_ARGS_((char *ptr, unsigned int numBytes));
-extern double		strtod _ANSI_ARGS_((CONST char *string, char **endPtr));
-extern long		strtol _ANSI_ARGS_((CONST char *string, char **endPtr,
-			    int base));
-extern unsigned long	strtoul _ANSI_ARGS_((CONST char *string,
-			    char **endPtr, int base));
+extern void		abort(void);
+extern double		atof(const char *string);
+extern int		atoi(const char *string);
+extern long		atol(const char *string);
+extern char *		calloc(unsigned int numElements, unsigned int size);
+extern void		exit(int status);
+extern int		free(char *blockPtr);
+extern char *		getenv(const char *name);
+extern char *		malloc(unsigned int numBytes);
+extern void		qsort(void *base, int n, int size, int (*compar)(
+			    const void *element1, const void *element2));
+extern char *		realloc(char *ptr, unsigned int numBytes);
+extern double		strtod(const char *string, char **endPtr);
+extern long		strtol(const char *string, char **endPtr, int base);
+extern unsigned long	strtoul(const char *string, char **endPtr, int base);
 
 #endif /* _STDLIB */
diff --git a/compat/strftime.c b/compat/strftime.c
deleted file mode 100644
index 68016ac..0000000
--- a/compat/strftime.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/* 
- * strftime.c --
- *
- *	This file contains a modified version of the BSD 4.4 strftime
- *	function.
- *
- * This file is a modified version of the strftime.c file from the BSD 4.4
- * source.  See the copyright notice below for details on redistribution
- * restrictions.  The "license.terms" file does not apply to this file.
- *
- * Changes 2002 Copyright (c) 2002 ActiveState Corporation.
- */
-
-/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <time.h>
-#include <string.h>
-#include <locale.h>
-#include "tclInt.h"
-#include "tclPort.h"
-
-#define TM_YEAR_BASE   1900
-#define IsLeapYear(x)   ((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0))
-
-typedef struct {
-    const char *abday[7];
-    const char *day[7];
-    const char *abmon[12];
-    const char *mon[12];
-    const char *am_pm[2];
-    const char *d_t_fmt;
-    const char *d_fmt;
-    const char *t_fmt;
-    const char *t_fmt_ampm;
-} _TimeLocale;
-
-/*
- * This is the C locale default.  On Windows, if we wanted to make this
- * localized, we would use GetLocaleInfo to get the correct values.
- * It may be acceptable to do localization of month/day names, as the
- * numerical values would be considered the locale-independent versions.
- */
-static const _TimeLocale _DefaultTimeLocale = 
-{
-    {
-	"Sun","Mon","Tue","Wed","Thu","Fri","Sat",
-    },
-    {
-	"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
-	"Friday", "Saturday"
-    },
-    {
-	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
-	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-    },
-    {
-	"January", "February", "March", "April", "May", "June", "July",
-	"August", "September", "October", "November", "December"
-    },
-    {
-	"AM", "PM"
-    },
-    "%a %b %d %H:%M:%S %Y",
-    "%m/%d/%y",
-    "%H:%M:%S",
-    "%I:%M:%S %p"
-};
-
-static const _TimeLocale *_CurrentTimeLocale = &_DefaultTimeLocale;
-
-static int isGMT;
-static size_t gsize;
-static char *pt;
-static int		 _add _ANSI_ARGS_((const char* str));
-static int		_conv _ANSI_ARGS_((int n, int digits, int pad));
-static int		_secs _ANSI_ARGS_((const struct tm *t));
-static size_t		_fmt _ANSI_ARGS_((const char *format,
-			    const struct tm *t));
-static int ISO8601Week _ANSI_ARGS_((CONST struct tm* t, int *year ));
-
-size_t
-TclpStrftime(s, maxsize, format, t, useGMT)
-    char *s;
-    size_t maxsize;
-    const char *format;
-    const struct tm *t;
-    int useGMT;
-{
-    if (format[0] == '%' && format[1] == 'Q') {
-	/* Format as a stardate */
-	sprintf(s, "Stardate %2d%03d.%01d",
-		(((t->tm_year + TM_YEAR_BASE) + 377) - 2323),
-		(((t->tm_yday + 1) * 1000) /
-			(365 + IsLeapYear((t->tm_year + TM_YEAR_BASE)))),
-		(((t->tm_hour * 60) + t->tm_min)/144));
-	return(strlen(s));
-    }
-
-    isGMT = useGMT;
-    /*
-     * We may be able to skip this for useGMT, but it should be harmless.
-     * -- hobbs
-     */
-    tzset();
-
-    pt = s;
-    if ((gsize = maxsize) < 1)
-	return(0);
-    if (_fmt(format, t)) {
-	*pt = '\0';
-	return(maxsize - gsize);
-    }
-    return(0);
-}
-
-#define SUN_WEEK(t)	(((t)->tm_yday + 7 - \
-				((t)->tm_wday)) / 7)
-#define MON_WEEK(t)	(((t)->tm_yday + 7 - \
-				((t)->tm_wday ? (t)->tm_wday - 1 : 6)) / 7)
-
-static size_t
-_fmt(format, t)
-    const char *format;
-    const struct tm *t;
-{
-#ifdef WIN32
-#define BUF_SIZ 256
-    TCHAR buf[BUF_SIZ];
-    SYSTEMTIME syst = {
-	t->tm_year + 1900,
-	t->tm_mon + 1,
-	t->tm_wday,
-	t->tm_mday,
-	t->tm_hour,
-	t->tm_min,
-	t->tm_sec,
-	0,
-    };
-#endif
-    for (; *format; ++format) {
-	if (*format == '%') {
-	    ++format;
-	    if (*format == 'E') {
-				/* Alternate Era */
-		++format;
-	    } else if (*format == 'O') {
-				/* Alternate numeric symbols */
-		++format;
-	    }
-	    switch(*format) {
-		case '\0':
-		    --format;
-		    break;
-		case 'A':
-		    if (t->tm_wday < 0 || t->tm_wday > 6)
-			return(0);
-		    if (!_add(_CurrentTimeLocale->day[t->tm_wday]))
-			return(0);
-		    continue;
-		case 'a':
-		    if (t->tm_wday < 0 || t->tm_wday > 6)
-			return(0);
-		    if (!_add(_CurrentTimeLocale->abday[t->tm_wday]))
-			return(0);
-		    continue;
-		case 'B':
-		    if (t->tm_mon < 0 || t->tm_mon > 11)
-			return(0);
-		    if (!_add(_CurrentTimeLocale->mon[t->tm_mon]))
-			return(0);
-		    continue;
-		case 'b':
-		case 'h':
-		    if (t->tm_mon < 0 || t->tm_mon > 11)
-			return(0);
-		    if (!_add(_CurrentTimeLocale->abmon[t->tm_mon]))
-			return(0);
-		    continue;
-		case 'C':
-		    if (!_conv((t->tm_year + TM_YEAR_BASE) / 100,
-			    2, '0'))
-			return(0);
-		    continue;
-		case 'D':
-		    if (!_fmt("%m/%d/%y", t))
-			return(0);
-		    continue;
-		case 'd':
-		    if (!_conv(t->tm_mday, 2, '0'))
-			return(0);
-		    continue;
-		case 'e':
-		    if (!_conv(t->tm_mday, 2, ' '))
-			return(0);
-		    continue;
-	        case 'g':
-		    {
-			int year;
-			ISO8601Week( t, &year );
-			if ( !_conv( year%100, 2, '0' ) ) {
-			    return( 0 );
-			}
-			continue;
-		    }
-	        case 'G':
-		    {
-			int year;
-			ISO8601Week( t, &year );
-			if ( !_conv( year, 4, '0' ) ) {
-			    return( 0 );
-			}
-			continue;
-		    }
-		case 'H':
-		    if (!_conv(t->tm_hour, 2, '0'))
-			return(0);
-		    continue;
-		case 'I':
-		    if (!_conv(t->tm_hour % 12 ?
-			    t->tm_hour % 12 : 12, 2, '0'))
-			return(0);
-		    continue;
-		case 'j':
-		    if (!_conv(t->tm_yday + 1, 3, '0'))
-			return(0);
-		    continue;
-		case 'k':
-		    if (!_conv(t->tm_hour, 2, ' '))
-			return(0);
-		    continue;
-		case 'l':
-		    if (!_conv(t->tm_hour % 12 ?
-			    t->tm_hour % 12: 12, 2, ' '))
-			return(0);
-		    continue;
-		case 'M':
-		    if (!_conv(t->tm_min, 2, '0'))
-			return(0);
-		    continue;
-		case 'm':
-		    if (!_conv(t->tm_mon + 1, 2, '0'))
-			return(0);
-		    continue;
-		case 'n':
-		    if (!_add("\n"))
-			return(0);
-		    continue;
-		case 'p':
-		    if (!_add(_CurrentTimeLocale->am_pm[t->tm_hour >= 12]))
-			return(0);
-		    continue;
-		case 'R':
-		    if (!_fmt("%H:%M", t))
-			return(0);
-		    continue;
-		case 'r':
-		    if (!_fmt(_CurrentTimeLocale->t_fmt_ampm, t))
-			return(0);
-		    continue;
-		case 'S':
-		    if (!_conv(t->tm_sec, 2, '0'))
-			return(0);
-		    continue;
-		case 's':
-		    if (!_secs(t))
-			return(0);
-		    continue;
-		case 'T':
-		    if (!_fmt("%H:%M:%S", t))
-			return(0);
-		    continue;
-		case 't':
-		    if (!_add("\t"))
-			return(0);
-		    continue;
-		case 'U':
-		    if (!_conv(SUN_WEEK(t), 2, '0'))
-			return(0);
-		    continue;
-		case 'u':
-		    if (!_conv(t->tm_wday ? t->tm_wday : 7, 1, '0'))
-			return(0);
-		    continue;
-		case 'V':
-		{
-		    int week = ISO8601Week( t, NULL );
-		    if (!_conv(week, 2, '0'))
-			return(0);
-		    continue;
-		}
-		case 'W':
-		    if (!_conv(MON_WEEK(t), 2, '0'))
-			return(0);
-		    continue;
-		case 'w':
-		    if (!_conv(t->tm_wday, 1, '0'))
-			return(0);
-		    continue;
-#ifdef WIN32
-		/*
-		 * To properly handle the localized time routines on Windows,
-		 * we must make use of the special localized calls.
-		 */
-		case 'c':
-		    if (!GetDateFormat(LOCALE_USER_DEFAULT,
-				       DATE_LONGDATE | LOCALE_USE_CP_ACP,
-				       &syst, NULL, buf, BUF_SIZ)
-			|| !_add(buf)
-			|| !_add(" ")) {
-			return(0);
-		    }
-		    /*
-		     * %c is created with LONGDATE + " " + TIME on Windows,
-		     * so continue to %X case here.
-		     */
-		case 'X':
-		    if (!GetTimeFormat(LOCALE_USER_DEFAULT,
-				       LOCALE_USE_CP_ACP,
-				       &syst, NULL, buf, BUF_SIZ)
-			|| !_add(buf)) {
-			return(0);
-		    }
-		    continue;
-		case 'x':
-		    if (!GetDateFormat(LOCALE_USER_DEFAULT,
-				       DATE_SHORTDATE | LOCALE_USE_CP_ACP,
-				       &syst, NULL, buf, BUF_SIZ)
-			|| !_add(buf)) {
-			return(0);
-		    }
-		    continue;
-#else
-		case 'c':
-		    if (!_fmt(_CurrentTimeLocale->d_t_fmt, t))
-			return(0);
-		    continue;
-		case 'x':
-		    if (!_fmt(_CurrentTimeLocale->d_fmt, t))
-			return(0);
-		    continue;
-		case 'X':
-		    if (!_fmt(_CurrentTimeLocale->t_fmt, t))
-			return(0);
-		    continue;
-#endif
-		case 'y':
-		    if (!_conv((t->tm_year + TM_YEAR_BASE) % 100,
-			    2, '0'))
-			return(0);
-		    continue;
-		case 'Y':
-		    if (!_conv((t->tm_year + TM_YEAR_BASE), 4, '0'))
-			return(0);
-		    continue;
-		case 'Z': {
-		    char *name = (isGMT ? "GMT" : TclpGetTZName(t->tm_isdst));
-		    int wrote;
-		    Tcl_UtfToExternal(NULL, NULL, name, -1, 0, NULL,
-				      pt, gsize, NULL, &wrote, NULL);
-		    pt += wrote;
-		    gsize -= wrote;
-		    continue;
-		}
-		case '%':
-		    /*
-		     * X311J/88-090 (4.12.3.5): if conversion char is
-		     * undefined, behavior is undefined.  Print out the
-		     * character itself as printf(3) does.
-		     */
-		default:
-		    break;
-	    }
-	}
-	if (!gsize--)
-	    return(0);
-	*pt++ = *format;
-    }
-    return(gsize);
-}
-
-static int
-_secs(t)
-    const struct tm *t;
-{
-    static char buf[15];
-    register time_t s;
-    register char *p;
-    struct tm tmp;
-
-    /* Make a copy, mktime(3) modifies the tm struct. */
-    tmp = *t;
-    s = mktime(&tmp);
-    for (p = buf + sizeof(buf) - 2; s > 0 && p > buf; s /= 10)
-	*p-- = (char)(s % 10 + '0');
-    return(_add(++p));
-}
-
-static int
-_conv(n, digits, pad)
-    int n, digits;
-    int pad;
-{
-    static char buf[10];
-    register char *p;
-
-    p = buf + sizeof( buf ) - 1;
-    *p-- = '\0';
-    if ( n == 0 ) {
-	*p-- = '0'; --digits;
-    } else {
-	for (; n > 0 && p > buf; n /= 10, --digits)
-	    *p-- = (char)(n % 10 + '0');
-    }
-    while (p > buf && digits-- > 0)
-	*p-- = (char) pad;
-    return(_add(++p));
-}
-
-static int
-_add(str)
-    const char *str;
-{
-    for (;; ++pt, --gsize) {
-	if (!gsize)
-	    return(0);
-	if (!(*pt = *str++))
-	    return(1);
-    }
-}
-
-static int
-ISO8601Week( t, year )
-    CONST struct tm* t;
-    int* year;
-{
-    /* Find the day-of-year of the Thursday in
-     * the week in question. */
-    
-    int ydayThursday;
-    int week;
-    if ( t->tm_wday == 0 ) {
-	ydayThursday = t->tm_yday - 3;
-    } else {
-	ydayThursday = t->tm_yday - t->tm_wday + 4;
-    }
-    
-    if ( ydayThursday < 0 ) {
-	
-	/* This is the last week of the previous year. */
-	if ( IsLeapYear(( t->tm_year + TM_YEAR_BASE - 1 )) ) {
-	    ydayThursday += 366;
-	} else {
-	    ydayThursday += 365;
-	}
-	week = ydayThursday / 7 + 1;
-	if ( year != NULL ) {
-	    *year = t->tm_year + 1899;
-	}
-	
-    } else if ( ( IsLeapYear(( t -> tm_year + TM_YEAR_BASE ))
-		  && ydayThursday >= 366 )
-		|| ( !IsLeapYear(( t -> tm_year
-				   + TM_YEAR_BASE ))
-		     && ydayThursday >= 365 ) ) {
-	
-	/* This is week 1 of the following year */
-	
-	week = 1;
-	if ( year != NULL ) {
-	    *year = t->tm_year + 1901;
-	}
-	
-    } else {
-	
-	week = ydayThursday / 7 + 1;
-	if ( year != NULL ) {
-	    *year = t->tm_year + 1900;
-	}
-	
-    }
-
-    return week;
-    
-}
diff --git a/compat/string.h b/compat/string.h
index 4eb2b86..42be10c 100644
--- a/compat/string.h
+++ b/compat/string.h
@@ -6,66 +6,52 @@
  * Copyright (c) 1991-1993 The Regents of the University of California.
  * Copyright (c) 1994-1996 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #ifndef _STRING
 #define _STRING
 
-#include <tcl.h>
-
 /*
- * The following #include is needed to define size_t. (This used to
- * include sys/stdtypes.h but that doesn't exist on older versions
- * of SunOS, e.g. 4.0.2, so I'm trying sys/types.h now.... hopefully
- * it exists everywhere)
+ * The following #include is needed to define size_t. (This used to include
+ * sys/stdtypes.h but that doesn't exist on older versions of SunOS, e.g.
+ * 4.0.2, so I'm trying sys/types.h now.... hopefully it exists everywhere)
  */
 
 #include <sys/types.h>
 
 #ifdef __APPLE__
-extern VOID *		memchr _ANSI_ARGS_((CONST VOID *s, int c, size_t n));
+extern void *		memchr(const void *s, int c, size_t n);
 #else
-extern char *		memchr _ANSI_ARGS_((CONST VOID *s, int c, size_t n));
+extern char *		memchr(const void *s, int c, size_t n);
 #endif
-extern int		memcmp _ANSI_ARGS_((CONST VOID *s1, CONST VOID *s2,
-			    size_t n));
-extern char *		memcpy _ANSI_ARGS_((VOID *t, CONST VOID *f, size_t n));
+extern int		memcmp(const void *s1, const void *s2, size_t n);
+extern char *		memcpy(void *t, const void *f, size_t n);
 #ifdef NO_MEMMOVE
-#define memmove(d, s, n) bcopy ((s), (d), (n))
+#define memmove(d,s,n)	(bcopy((s), (d), (n)))
 #else
-extern char *		memmove _ANSI_ARGS_((VOID *t, CONST VOID *f,
-			    size_t n));
+extern char *		memmove(void *t, const void *f, size_t n);
 #endif
-extern char *		memset _ANSI_ARGS_((VOID *s, int c, size_t n));
+extern char *		memset(void *s, int c, size_t n);
 
-extern int		strcasecmp _ANSI_ARGS_((CONST char *s1,
-			    CONST char *s2));
-extern char *		strcat _ANSI_ARGS_((char *dst, CONST char *src));
-extern char *		strchr _ANSI_ARGS_((CONST char *string, int c));
-extern int		strcmp _ANSI_ARGS_((CONST char *s1, CONST char *s2));
-extern char *		strcpy _ANSI_ARGS_((char *dst, CONST char *src));
-extern size_t		strcspn _ANSI_ARGS_((CONST char *string,
-			    CONST char *chars));
-extern char *		strdup _ANSI_ARGS_((CONST char *string));
-extern char *		strerror _ANSI_ARGS_((int error));
-extern size_t		strlen _ANSI_ARGS_((CONST char *string));
-extern int		strncasecmp _ANSI_ARGS_((CONST char *s1,
-			    CONST char *s2, size_t n));
-extern char *		strncat _ANSI_ARGS_((char *dst, CONST char *src,
-			    size_t numChars));
-extern int		strncmp _ANSI_ARGS_((CONST char *s1, CONST char *s2,
-			    size_t nChars));
-extern char *		strncpy _ANSI_ARGS_((char *dst, CONST char *src,
-			    size_t numChars));
-extern char *		strpbrk _ANSI_ARGS_((CONST char *string,
-			    CONST char *chars));
-extern char *		strrchr _ANSI_ARGS_((CONST char *string, int c));
-extern size_t		strspn _ANSI_ARGS_((CONST char *string,
-			    CONST char *chars));
-extern char *		strstr _ANSI_ARGS_((CONST char *string,
-			    CONST char *substring));
-extern char *		strtok _ANSI_ARGS_((char *s, CONST char *delim));
+extern int		strcasecmp(const char *s1, const char *s2);
+extern char *		strcat(char *dst, const char *src);
+extern char *		strchr(const char *string, int c);
+extern int		strcmp(const char *s1, const char *s2);
+extern char *		strcpy(char *dst, const char *src);
+extern size_t		strcspn(const char *string, const char *chars);
+extern char *		strdup(const char *string);
+extern char *		strerror(int error);
+extern size_t		strlen(const char *string);
+extern int		strncasecmp(const char *s1, const char *s2, size_t n);
+extern char *		strncat(char *dst, const char *src, size_t numChars);
+extern int		strncmp(const char *s1, const char *s2, size_t nChars);
+extern char *		strncpy(char *dst, const char *src, size_t numChars);
+extern char *		strpbrk(const char *string, const char *chars);
+extern char *		strrchr(const char *string, int c);
+extern size_t		strspn(const char *string, const char *chars);
+extern char *		strstr(const char *string, const char *substring);
+extern char *		strtok(char *s, const char *delim);
 
 #endif /* _STRING */
diff --git a/compat/strncasecmp.c b/compat/strncasecmp.c
index d00ea5b..76cf549 100644
--- a/compat/strncasecmp.c
+++ b/compat/strncasecmp.c
@@ -6,16 +6,16 @@
  * Copyright (c) 1988-1993 The Regents of the University of California.
  * Copyright (c) 1995-1996 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclPort.h"
 
 /*
- * This array is designed for mapping upper and lower case letter
- * together for a case independent comparison.  The mappings are
- * based upon ASCII character sequences.
+ * This array is designed for mapping upper and lower case letter together for
+ * a case independent comparison. The mappings are based upon ASCII character
+ * sequences.
  */
 
 static unsigned char charmap[] = {
@@ -54,14 +54,11 @@ static unsigned char charmap[] = {
 };
 
 /*
- * Here are the prototypes just in case they are not included
- * in tclPort.h.
+ * Here are the prototypes just in case they are not included in tclPort.h.
  */
-int		strncasecmp _ANSI_ARGS_((CONST char *s1,
-			    CONST char *s2, size_t n));
 
-int		strcasecmp _ANSI_ARGS_((CONST char *s1,
-			    CONST char *s2));
+int		strncasecmp(CONST char *s1, CONST char *s2, size_t n);
+int		strcasecmp(CONST char *s1, CONST char *s2);
 
 /*
  *----------------------------------------------------------------------
@@ -71,9 +68,8 @@ int		strcasecmp _ANSI_ARGS_((CONST char *s1,
  *	Compares two strings, ignoring case differences.
  *
  * Results:
- *	Compares two null-terminated strings s1 and s2, returning -1, 0,
- *	or 1 if s1 is lexicographically less than, equal to, or greater
- *	than s2.
+ *	Compares two null-terminated strings s1 and s2, returning -1, 0, or 1
+ *	if s1 is lexicographically less than, equal to, or greater than s2.
  *
  * Side effects:
  *	None.
@@ -82,9 +78,9 @@ int		strcasecmp _ANSI_ARGS_((CONST char *s1,
  */
 
 int
-strcasecmp(s1, s2)
-    CONST char *s1;			/* First string. */
-    CONST char *s2;			/* Second string. */
+strcasecmp(
+    CONST char *s1,		/* First string. */
+    CONST char *s2)		/* Second string. */
 {
     unsigned char u1, u2;
 
@@ -106,9 +102,9 @@ strcasecmp(s1, s2)
  *	Compares two strings, ignoring case differences.
  *
  * Results:
- *	Compares up to length chars of s1 and s2, returning -1, 0, or 1
- *	if s1 is lexicographically less than, equal to, or greater
- *	than s2 over those characters.
+ *	Compares up to length chars of s1 and s2, returning -1, 0, or 1 if s1
+ *	is lexicographically less than, equal to, or greater than s2 over
+ *	those characters.
  *
  * Side effects:
  *	None.
@@ -117,10 +113,10 @@ strcasecmp(s1, s2)
  */
 
 int
-strncasecmp(s1, s2, length)
-    CONST char *s1;		/* First string. */
-    CONST char *s2;		/* Second string. */
-    size_t length;		/* Maximum number of characters to compare
+strncasecmp(
+    CONST char *s1,		/* First string. */
+    CONST char *s2,		/* Second string. */
+    size_t length)		/* Maximum number of characters to compare
 				 * (stop earlier if the end of either string
 				 * is reached). */
 {
diff --git a/compat/strstr.c b/compat/strstr.c
index 98d567d..6698c9f 100644
--- a/compat/strstr.c
+++ b/compat/strstr.c
@@ -6,11 +6,11 @@
  * Copyright (c) 1988-1993 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include <tcl.h>
+#include "tcl.h"
 #ifndef NULL
 #define NULL 0
 #endif
@@ -23,12 +23,10 @@
  *	Locate the first instance of a substring in a string.
  *
  * Results:
- *	If string contains substring, the return value is the
- *	location of the first matching instance of substring
- *	in string.  If string doesn't contain substring, the
- *	return value is 0.  Matching is done on an exact
- *	character-for-character basis with no wildcards or special
- *	characters.
+ *	If string contains substring, the return value is the location of the
+ *	first matching instance of substring in string. If string doesn't
+ *	contain substring, the return value is 0. Matching is done on an exact
+ *	character-for-character basis with no wildcards or special characters.
  *
  * Side effects:
  *	None.
@@ -37,15 +35,16 @@
  */
 
 char *
-strstr(string, substring)
-    register char *string;	/* String to search. */
-    char *substring;		/* Substring to try to find in string. */
+strstr(
+    register char *string,	/* String to search. */
+    char *substring)		/* Substring to try to find in string. */
 {
     register char *a, *b;
 
-    /* First scan quickly through the two strings looking for a
-     * single-character match.  When it's found, then compare the
-     * rest of the substring.
+    /*
+     * First scan quickly through the two strings looking for a
+     * single-character match. When it's found, then compare the rest of the
+     * substring.
      */
 
     b = substring;
diff --git a/compat/strtod.c b/compat/strtod.c
index c5d4b96..1147825 100644
--- a/compat/strtod.c
+++ b/compat/strtod.c
@@ -11,7 +11,6 @@
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 #include <ctype.h>
 
 #ifndef TRUE
@@ -61,20 +60,19 @@ static double powersOf10[] = {	/* Table giving binary powers of 10.  Entry */
  */
 
 double
-strtod(string, endPtr)
-    CONST char *string;		/* A decimal ASCII floating-point number,
-				 * optionally preceded by white space.
-				 * Must have form "-I.FE-X", where I is the
-				 * integer part of the mantissa, F is the
-				 * fractional part of the mantissa, and X
-				 * is the exponent.  Either of the signs
-				 * may be "+", "-", or omitted.  Either I
-				 * or F may be omitted, or both.  The decimal
-				 * point isn't necessary unless F is present.
-				 * The "E" may actually be an "e".  E and X
-				 * may both be omitted (but not just one).
-				 */
-    char **endPtr;		/* If non-NULL, store terminating character's
+strtod(
+    CONST char *string,		/* A decimal ASCII floating-point number,
+				 * optionally preceded by white space. Must
+				 * have form "-I.FE-X", where I is the integer
+				 * part of the mantissa, F is the fractional
+				 * part of the mantissa, and X is the
+				 * exponent. Either of the signs may be "+",
+				 * "-", or omitted. Either I or F may be
+				 * omitted, or both. The decimal point isn't
+				 * necessary unless F is present. The "E" may
+				 * actually be an "e". E and X may both be
+				 * omitted (but not just one). */
+    char **endPtr)		/* If non-NULL, store terminating character's
 				 * address here. */
 {
     int sign, expSign = FALSE;
@@ -83,19 +81,19 @@ strtod(string, endPtr)
     register int c;
     int exp = 0;		/* Exponent read from "EX" field. */
     int fracExp = 0;		/* Exponent that derives from the fractional
-				 * part.  Under normal circumstatnces, it is
+				 * part. Under normal circumstatnces, it is
 				 * the negative of the number of digits in F.
 				 * However, if I is very long, the last digits
 				 * of I get dropped (otherwise a long I with a
 				 * large negative exponent could cause an
-				 * unnecessary overflow on I alone).  In this
+				 * unnecessary overflow on I alone). In this
 				 * case, fracExp is incremented one for each
 				 * dropped digit. */
     int mantSize;		/* Number of digits in mantissa. */
     int decPt;			/* Number of mantissa digits BEFORE decimal
 				 * point. */
-    CONST char *pExp;		/* Temporarily holds location of exponent
-				 * in string. */
+    CONST char *pExp;		/* Temporarily holds location of exponent in
+				 * string. */
 
     /*
      * Strip off leading blanks and check for a sign.
@@ -134,10 +132,10 @@ strtod(string, endPtr)
     }
 
     /*
-     * Now suck up the digits in the mantissa.  Use two integers to
-     * collect 9 digits each (this is faster than using floating-point).
-     * If the mantissa has more than 18 digits, ignore the extras, since
-     * they can't affect the value anyway.
+     * Now suck up the digits in the mantissa. Use two integers to collect 9
+     * digits each (this is faster than using floating-point). If the mantissa
+     * has more than 18 digits, ignore the extras, since they can't affect the
+     * value anyway.
      */
     
     pExp  = p;
@@ -145,7 +143,7 @@ strtod(string, endPtr)
     if (decPt < 0) {
 	decPt = mantSize;
     } else {
-	mantSize -= 1;			/* One of the digits was the point. */
+	mantSize -= 1;		/* One of the digits was the point. */
     }
     if (mantSize > 18) {
 	fracExp = decPt - 18;
@@ -159,9 +157,9 @@ strtod(string, endPtr)
 	goto done;
     } else {
 	int frac1, frac2;
+
 	frac1 = 0;
-	for ( ; mantSize > 9; mantSize -= 1)
-	{
+	for ( ; mantSize > 9; mantSize -= 1) {
 	    c = *p;
 	    p += 1;
 	    if (c == '.') {
@@ -171,8 +169,7 @@ strtod(string, endPtr)
 	    frac1 = 10*frac1 + (c - '0');
 	}
 	frac2 = 0;
-	for (; mantSize > 0; mantSize -= 1)
-	{
+	for (; mantSize > 0; mantSize -= 1) {
 	    c = *p;
 	    p += 1;
 	    if (c == '.') {
@@ -216,10 +213,9 @@ strtod(string, endPtr)
     }
 
     /*
-     * Generate a floating-point number that represents the exponent.
-     * Do this by processing the exponent one bit at a time to combine
-     * many powers of 2 of 10. Then combine the exponent with the
-     * fraction.
+     * Generate a floating-point number that represents the exponent. Do this
+     * by processing the exponent one bit at a time to combine many powers of
+     * 2 of 10. Then combine the exponent with the fraction.
      */
     
     if (exp < 0) {
@@ -244,7 +240,7 @@ strtod(string, endPtr)
 	fraction *= dblExp;
     }
 
-done:
+  done:
     if (endPtr != NULL) {
 	*endPtr = (char *) p;
     }
diff --git a/compat/strtol.c b/compat/strtol.c
index bc21c4b..793f094 100644
--- a/compat/strtol.c
+++ b/compat/strtol.c
@@ -6,14 +6,12 @@
  * Copyright (c) 1988 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include <ctype.h>
 #include "tclInt.h"
-#include "tclPort.h"
-
 
 /*
  *----------------------------------------------------------------------
@@ -23,11 +21,10 @@
  *	Convert an ASCII string into an integer.
  *
  * Results:
- *	The return value is the integer equivalent of string.  If endPtr
- *	is non-NULL, then *endPtr is filled in with the character
- *	after the last one that was part of the integer.  If string
- *	doesn't contain a valid integer value, then zero is returned
- *	and *endPtr is set to string.
+ *	The return value is the integer equivalent of string. If endPtr is
+ *	non-NULL, then *endPtr is filled in with the character after the last
+ *	one that was part of the integer. If string doesn't contain a valid
+ *	integer value, then zero is returned and *endPtr is set to string.
  *
  * Side effects:
  *	None.
@@ -36,20 +33,18 @@
  */
 
 long int
-strtol(string, endPtr, base)
-    CONST char *string;		/* String of ASCII digits, possibly
-				 * preceded by white space.  For bases
-				 * greater than 10, either lower- or
-				 * upper-case digits may be used.
-				 */
-    char **endPtr;		/* Where to store address of terminating
+strtol(
+    CONST char *string,		/* String of ASCII digits, possibly preceded
+				 * by white space. For bases greater than 10,
+				 * either lower- or upper-case digits may be
+				 * used. */
+    char **endPtr,		/* Where to store address of terminating
 				 * character, or NULL. */
-    int base;			/* Base for conversion.  Must be less
-				 * than 37.  If 0, then the base is chosen
-				 * from the leading characters of string:
-				 * "0x" means hex, "0" means octal, anything
-				 * else means decimal.
-				 */
+    int base)			/* Base for conversion. Must be less than 37.
+				 * If 0, then the base is chosen from the
+				 * leading characters of string: "0x" means
+				 * hex, "0" means octal, anything else means
+				 * decimal. */
 {
     register CONST char *p;
     long result;
diff --git a/compat/strtoll.c b/compat/strtoll.c
deleted file mode 100644
index a829d70..0000000
--- a/compat/strtoll.c
+++ /dev/null
@@ -1,109 +0,0 @@
-/* 
- * strtoll.c --
- *
- *	Source code for the "strtoll" library procedure.
- *
- * Copyright (c) 1988 The Regents of the University of California.
- * Copyright (c) 1994 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#include "tcl.h"
-#include "tclPort.h"
-#include <ctype.h>
-
-#define TCL_WIDEINT_MAX	(((Tcl_WideUInt)Tcl_LongAsWide(-1))>>1)
-
-
-/*
- *----------------------------------------------------------------------
- *
- * strtoll --
- *
- *	Convert an ASCII string into an integer.
- *
- * Results:
- *	The return value is the integer equivalent of string.  If endPtr
- *	is non-NULL, then *endPtr is filled in with the character
- *	after the last one that was part of the integer.  If string
- *	doesn't contain a valid integer value, then zero is returned
- *	and *endPtr is set to string.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-#if TCL_WIDE_INT_IS_LONG
-long long
-#else
-Tcl_WideInt
-#endif
-strtoll(string, endPtr, base)
-    CONST char *string;		/* String of ASCII digits, possibly
-				 * preceded by white space.  For bases
-				 * greater than 10, either lower- or
-				 * upper-case digits may be used.
-				 */
-    char **endPtr;		/* Where to store address of terminating
-				 * character, or NULL. */
-    int base;			/* Base for conversion.  Must be less
-				 * than 37.  If 0, then the base is chosen
-				 * from the leading characters of string:
-				 * "0x" means hex, "0" means octal, anything
-				 * else means decimal.
-				 */
-{
-    register CONST char *p;
-    Tcl_WideInt result = Tcl_LongAsWide(0);
-    Tcl_WideUInt uwResult;
-
-    /*
-     * Skip any leading blanks.
-     */
-
-    p = string;
-    while (isspace(UCHAR(*p))) {
-	p += 1;
-    }
-
-    /*
-     * Check for a sign.
-     */
-
-    errno = 0;
-    if (*p == '-') {
-	p += 1;
-	uwResult = strtoull(p, endPtr, base);
-	if (errno != ERANGE) {
-	    if (uwResult > TCL_WIDEINT_MAX+1) {
-		errno = ERANGE;
-		return Tcl_LongAsWide(-1);
-	    } else if (uwResult > TCL_WIDEINT_MAX) {
-		return ~((Tcl_WideInt)TCL_WIDEINT_MAX);
-	    } else {
-		result = -((Tcl_WideInt) uwResult);
-	    }
-	}
-    } else {
-	if (*p == '+') {
-	    p += 1;
-	}
-	uwResult = strtoull(p, endPtr, base);
-	if (errno != ERANGE) {
-	    if (uwResult > TCL_WIDEINT_MAX) {
-		errno = ERANGE;
-		return Tcl_LongAsWide(-1);
-	    } else {
-		result = uwResult;
-	    }
-	}
-    }
-    if ((result == 0) && (endPtr != 0) && (*endPtr == p)) {
-	*endPtr = (char *) string;
-    }
-    return result;
-}
diff --git a/compat/strtoul.c b/compat/strtoul.c
index b9d2785..9d3f372 100644
--- a/compat/strtoul.c
+++ b/compat/strtoul.c
@@ -6,17 +6,16 @@
  * Copyright (c) 1988 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * The table below is used to convert from ASCII digits to a
- * numerical equivalent.  It maps from '0' through 'z' to integers
- * (100 for non-digit characters).
+ * The table below is used to convert from ASCII digits to a numerical
+ * equivalent. It maps from '0' through 'z' to integers (100 for non-digit
+ * characters).
  */
 
 static char cvtIn[] = {
@@ -38,11 +37,10 @@ static char cvtIn[] = {
  *	Convert an ASCII string into an integer.
  *
  * Results:
- *	The return value is the integer equivalent of string.  If endPtr
- *	is non-NULL, then *endPtr is filled in with the character
- *	after the last one that was part of the integer.  If string
- *	doesn't contain a valid integer value, then zero is returned
- *	and *endPtr is set to string.
+ *	The return value is the integer equivalent of string. If endPtr is
+ *	non-NULL, then *endPtr is filled in with the character after the last
+ *	one that was part of the integer. If string doesn't contain a valid
+ *	integer value, then zero is returned and *endPtr is set to string.
  *
  * Side effects:
  *	None.
@@ -51,20 +49,18 @@ static char cvtIn[] = {
  */
 
 unsigned long int
-strtoul(string, endPtr, base)
-    CONST char *string;		/* String of ASCII digits, possibly
-				 * preceded by white space.  For bases
-				 * greater than 10, either lower- or
-				 * upper-case digits may be used.
-				 */
-    char **endPtr;		/* Where to store address of terminating
+strtoul(
+    CONST char *string,		/* String of ASCII digits, possibly preceded
+				 * by white space. For bases greater than 10,
+				 * either lower- or upper-case digits may be
+				 * used. */
+    char **endPtr,		/* Where to store address of terminating
 				 * character, or NULL. */
-    int base;			/* Base for conversion.  Must be less
-				 * than 37.  If 0, then the base is chosen
-				 * from the leading characters of string:
-				 * "0x" means hex, "0" means octal, anything
-				 * else means decimal.
-				 */
+    int base)			/* Base for conversion.  Must be less than 37.
+				 * If 0, then the base is chosen from the
+				 * leading characters of string: "0x" means
+				 * hex, "0" means octal, anything else means
+				 * decimal. */
 {
     register CONST char *p;
     register unsigned long int result = 0;
@@ -91,31 +87,29 @@ strtoul(string, endPtr, base)
     }
 
     /*
-     * If no base was provided, pick one from the leading characters
-     * of the string.
+     * If no base was provided, pick one from the leading characters of the
+     * string.
      */
     
-    if (base == 0)
-    {
+    if (base == 0) {
 	if (*p == '0') {
 	    p += 1;
 	    if ((*p == 'x') || (*p == 'X')) {
 		p += 1;
 		base = 16;
 	    } else {
-
 		/*
-		 * Must set anyDigits here, otherwise "0" produces a
-		 * "no digits" error.
+		 * Must set anyDigits here, otherwise "0" produces a "no
+		 * digits" error.
 		 */
 
 		anyDigits = 1;
 		base = 8;
 	    }
+	} else {
+	    base = 10;
 	}
-	else base = 10;
     } else if (base == 16) {
-
 	/*
 	 * Skip a leading "0x" from hex numbers.
 	 */
@@ -126,12 +120,13 @@ strtoul(string, endPtr, base)
     }
 
     /*
-     * Sorry this code is so messy, but speed seems important.  Do
-     * different things for base 8, 10, 16, and other.
+     * Sorry this code is so messy, but speed seems important. Do different
+     * things for base 8, 10, 16, and other.
      */
 
     if (base == 8) {
 	unsigned long maxres = ULONG_MAX >> 3;
+
 	for ( ; ; p += 1) {
 	    digit = *p - '0';
 	    if (digit > 7) {
@@ -145,6 +140,7 @@ strtoul(string, endPtr, base)
 	}
     } else if (base == 10) {
 	unsigned long maxres = ULONG_MAX / 10;
+
 	for ( ; ; p += 1) {
 	    digit = *p - '0';
 	    if (digit > 9) {
@@ -158,6 +154,7 @@ strtoul(string, endPtr, base)
 	}
     } else if (base == 16) {
 	unsigned long maxres = ULONG_MAX >> 4;
+
 	for ( ; ; p += 1) {
 	    digit = *p - '0';
 	    if (digit > ('z' - '0')) {
@@ -173,8 +170,9 @@ strtoul(string, endPtr, base)
 	    result += digit;
 	    anyDigits = 1;
 	}
-    } else if ( base >= 2 && base <= 36 ) {
+    } else if (base >= 2 && base <= 36) {
 	unsigned long maxres = ULONG_MAX / base;
+
 	for ( ; ; p += 1) {
 	    digit = *p - '0';
 	    if (digit > ('z' - '0')) {
diff --git a/compat/strtoull.c b/compat/strtoull.c
deleted file mode 100644
index d0dd853..0000000
--- a/compat/strtoull.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/* 
- * strtoull.c --
- *
- *	Source code for the "strtoull" library procedure.
- *
- * Copyright (c) 1988 The Regents of the University of California.
- * Copyright (c) 1994 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#include "tcl.h"
-#include "tclPort.h"
-#include <ctype.h>
-
-/*
- * The table below is used to convert from ASCII digits to a
- * numerical equivalent.  It maps from '0' through 'z' to integers
- * (100 for non-digit characters).
- */
-
-static char cvtIn[] = {
-    0, 1, 2, 3, 4, 5, 6, 7, 8, 9,		/* '0' - '9' */
-    100, 100, 100, 100, 100, 100, 100,		/* punctuation */
-    10, 11, 12, 13, 14, 15, 16, 17, 18, 19,	/* 'A' - 'Z' */
-    20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
-    30, 31, 32, 33, 34, 35,
-    100, 100, 100, 100, 100, 100,		/* punctuation */
-    10, 11, 12, 13, 14, 15, 16, 17, 18, 19,	/* 'a' - 'z' */
-    20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
-    30, 31, 32, 33, 34, 35};
-
-
-/*
- *----------------------------------------------------------------------
- *
- * strtoull --
- *
- *	Convert an ASCII string into an integer.
- *
- * Results:
- *	The return value is the integer equivalent of string.  If endPtr
- *	is non-NULL, then *endPtr is filled in with the character
- *	after the last one that was part of the integer.  If string
- *	doesn't contain a valid integer value, then zero is returned
- *	and *endPtr is set to string.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-#if TCL_WIDE_INT_IS_LONG
-unsigned long long
-#else
-Tcl_WideUInt
-#endif
-strtoull(string, endPtr, base)
-    CONST char *string;		/* String of ASCII digits, possibly
-				 * preceded by white space.  For bases
-				 * greater than 10, either lower- or
-				 * upper-case digits may be used.
-				 */
-    char **endPtr;		/* Where to store address of terminating
-				 * character, or NULL. */
-    int base;			/* Base for conversion.  Must be less
-				 * than 37.  If 0, then the base is chosen
-				 * from the leading characters of string:
-				 * "0x" means hex, "0" means octal, anything
-				 * else means decimal.
-				 */
-{
-    register CONST char *p;
-    register Tcl_WideUInt result = 0;
-    register unsigned digit;
-    register Tcl_WideUInt shifted;
-    int anyDigits = 0, negative = 0;
-
-    /*
-     * Skip any leading blanks.
-     */
-
-    p = string;
-    while (isspace(UCHAR(*p))) {	/* INTL: locale-dependent */
-	p += 1;
-    }
-
-    /*
-     * Check for a sign.
-     */
-
-    if (*p == '-') {
-	p += 1;
-	negative = 1;
-    } else {
-	if (*p == '+') {
-	    p += 1;
-	}
-    }
-
-    /*
-     * If no base was provided, pick one from the leading characters
-     * of the string.
-     */
-    
-    if (base == 0) {
-	if (*p == '0') {
-	    p += 1;
-	    if (*p == 'x' || *p == 'X') {
-		p += 1;
-		base = 16;
-	    } else {
-
-		/*
-		 * Must set anyDigits here, otherwise "0" produces a
-		 * "no digits" error.
-		 */
-
-		anyDigits = 1;
-		base = 8;
-	    }
-	} else {
-	    base = 10;
-	}
-    } else if (base == 16) {
-
-	/*
-	 * Skip a leading "0x" from hex numbers.
-	 */
-
-	if ((p[0] == '0') && (p[1] == 'x' || *p == 'X')) {
-	    p += 2;
-	}
-    }
-
-    /*
-     * Sorry this code is so messy, but speed seems important.  Do
-     * different things for base 8, 10, 16, and other.
-     */
-
-    if (base == 8) {
-	for ( ; ; p += 1) {
-	    digit = *p - '0';
-	    if (digit > 7) {
-		break;
-	    }
-	    shifted = result << 3;
-	    if ((shifted >> 3) != result) {
-		goto overflow;
-	    }
-	    result = shifted + digit;
-	    if ( result < shifted ) {
-		goto overflow;
-	    }
-	    anyDigits = 1;
-	}
-    } else if (base == 10) {
-	for ( ; ; p += 1) {
-	    digit = *p - '0';
-	    if (digit > 9) {
-		break;
-	    }
-	    shifted = 10 * result;
-	    if ((shifted / 10) != result) {
-		goto overflow;
-	    }
-	    result = shifted + digit;
-	    if ( result < shifted ) {
-		goto overflow;
-	    }
-	    anyDigits = 1;
-	}
-    } else if (base == 16) {
-	for ( ; ; p += 1) {
-	    digit = *p - '0';
-	    if (digit > ('z' - '0')) {
-		break;
-	    }
-	    digit = cvtIn[digit];
-	    if (digit > 15) {
-		break;
-	    }
-	    shifted = result << 4;
-	    if ((shifted >> 4) != result) {
-		goto overflow;
-	    }
-	    result = shifted + digit;
-	    if ( result < shifted ) {
-		goto overflow;
-	    }
-	    anyDigits = 1;
-	}
-    } else if ( base >= 2 && base <= 36 ) {
-	for ( ; ; p += 1) {
-	    digit = *p - '0';
-	    if (digit > ('z' - '0')) {
-		break;
-	    }
-	    digit = cvtIn[digit];
-	    if (digit >= (unsigned) base) {
-		break;
-	    }
-	    shifted = result * base;
-	    if ((shifted/base) != result) {
-		goto overflow;
-	    }
-	    result = shifted + digit;
-	    if ( result < shifted ) {
-		goto overflow;
-	    }
-	    anyDigits = 1;
-	}
-    }
-
-    /*
-     * Negate if we found a '-' earlier.
-     */
-
-    if (negative) {
-	result = (Tcl_WideUInt)(-((Tcl_WideInt)result));
-    }
-
-    /*
-     * See if there were any digits at all.
-     */
-
-    if (!anyDigits) {
-	p = string;
-    }
-
-    if (endPtr != 0) {
-	*endPtr = (char *) p;
-    }
-
-    return result;
-
-    /*
-     * On overflow generate the right output
-     */
-
- overflow:
-    errno = ERANGE;
-    if (endPtr != 0) {
-	for ( ; ; p += 1) {
-	    digit = *p - '0';
-	    if (digit > ('z' - '0')) {
-		break;
-	    }
-	    digit = cvtIn[digit];
-	    if (digit >= (unsigned) base) {
-		break;
-	    }
-	}
-	*endPtr = (char *) p;
-    }
-    return (Tcl_WideUInt)Tcl_LongAsWide(-1);
-}
diff --git a/compat/tclErrno.h b/compat/tclErrno.h
deleted file mode 100644
index f4e3680..0000000
--- a/compat/tclErrno.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * tclErrno.h --
- *
- *	This header file contains the various POSIX errno definitions that
- *	are used by Tcl.  This file is derived from the spec POSIX 2.4 and
- *	previous implementations for Berkeley UNIX.
- *
- * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
- * Copyright (c) 1996 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-extern int errno;		/* global error number */
-
-#define	EPERM		1	/* Operation not permitted */
-#define	ENOENT		2	/* No such file or directory */
-#define	ESRCH		3	/* No such process */
-#define	EINTR		4	/* Interrupted system call */
-#define	EIO		5	/* Input/output error */
-#define	ENXIO		6	/* Device not configured */
-#define	E2BIG		7	/* Argument list too long */
-#define	ENOEXEC		8	/* Exec format error */
-#define	EBADF		9	/* Bad file descriptor */
-#define	ECHILD		10	/* No child processes */
-#define	EDEADLK		11	/* Resource deadlock avoided */
-				/* 11 was EAGAIN */
-#define	ENOMEM		12	/* Cannot allocate memory */
-#define	EACCES		13	/* Permission denied */
-#define	EFAULT		14	/* Bad address */
-#define	ENOTBLK		15	/* Block device required */
-#define	EBUSY		16	/* Device busy */
-#define	EEXIST		17	/* File exists */
-#define	EXDEV		18	/* Cross-device link */
-#define	ENODEV		19	/* Operation not supported by device */
-#define	ENOTDIR		20	/* Not a directory */
-#define	EISDIR		21	/* Is a directory */
-#define	EINVAL		22	/* Invalid argument */
-#define	ENFILE		23	/* Too many open files in system */
-#define	EMFILE		24	/* Too many open files */
-#define	ENOTTY		25	/* Inappropriate ioctl for device */
-#define	ETXTBSY		26	/* Text file busy */
-#define	EFBIG		27	/* File too large */
-#define	ENOSPC		28	/* No space left on device */
-#define	ESPIPE		29	/* Illegal seek */
-#define	EROFS		30	/* Read-only file system */
-#define	EMLINK		31	/* Too many links */
-#define	EPIPE		32	/* Broken pipe */
-#define	EDOM		33	/* Numerical argument out of domain */
-#define	ERANGE		34	/* Result too large */
-#define	EAGAIN		35	/* Resource temporarily unavailable */
-#define	EWOULDBLOCK	EAGAIN	/* Operation would block */
-#define	EINPROGRESS	36	/* Operation now in progress */
-#define	EALREADY	37	/* Operation already in progress */
-#define	ENOTSOCK	38	/* Socket operation on non-socket */
-#define	EDESTADDRREQ	39	/* Destination address required */
-#define	EMSGSIZE	40	/* Message too long */
-#define	EPROTOTYPE	41	/* Protocol wrong type for socket */
-#define	ENOPROTOOPT	42	/* Protocol not available */
-#define	EPROTONOSUPPORT	43	/* Protocol not supported */
-#define	ESOCKTNOSUPPORT	44	/* Socket type not supported */
-#define	EOPNOTSUPP	45	/* Operation not supported on socket */
-#define	EPFNOSUPPORT	46	/* Protocol family not supported */
-#define	EAFNOSUPPORT	47	/* Address family not supported by protocol family */
-#define	EADDRINUSE	48	/* Address already in use */
-#define	EADDRNOTAVAIL	49	/* Can't assign requested address */
-#define	ENETDOWN	50	/* Network is down */
-#define	ENETUNREACH	51	/* Network is unreachable */
-#define	ENETRESET	52	/* Network dropped connection on reset */
-#define	ECONNABORTED	53	/* Software caused connection abort */
-#define	ECONNRESET	54	/* Connection reset by peer */
-#define	ENOBUFS		55	/* No buffer space available */
-#define	EISCONN		56	/* Socket is already connected */
-#define	ENOTCONN	57	/* Socket is not connected */
-#define	ESHUTDOWN	58	/* Can't send after socket shutdown */
-#define	ETOOMANYREFS	59	/* Too many references: can't splice */
-#define	ETIMEDOUT	60	/* Connection timed out */
-#define	ECONNREFUSED	61	/* Connection refused */
-#define	ELOOP		62	/* Too many levels of symbolic links */
-#define	ENAMETOOLONG	63	/* File name too long */
-#define	EHOSTDOWN	64	/* Host is down */
-#define	EHOSTUNREACH	65	/* No route to host */
-#define	ENOTEMPTY	66	/* Directory not empty */
-#define	EPROCLIM	67	/* Too many processes */
-#define	EUSERS		68	/* Too many users */
-#define	EDQUOT		69	/* Disc quota exceeded */
-#define	ESTALE		70	/* Stale NFS file handle */
-#define	EREMOTE		71	/* Too many levels of remote in path */
-#define	EBADRPC		72	/* RPC struct is bad */
-#define	ERPCMISMATCH	73	/* RPC version wrong */
-#define	EPROGUNAVAIL	74	/* RPC prog. not avail */
-#define	EPROGMISMATCH	75	/* Program version wrong */
-#define	EPROCUNAVAIL	76	/* Bad procedure for program */
-#define	ENOLCK		77	/* No locks available */
-#define	ENOSYS		78	/* Function not implemented */
-#define	EOVERFLOW	79	/* Value too large to be stored in data type */
diff --git a/compat/tmpnam.c b/compat/tmpnam.c
deleted file mode 100644
index 89ce5fb..0000000
--- a/compat/tmpnam.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific written prior permission. This software
- * is provided ``as is'' without express or implied warranty.
- */
-
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/file.h>
-#include <stdio.h>
-
-/*
- * Use /tmp instead of /usr/tmp, because L_tmpname is only 14 chars
- * on some machines (like NeXT machines) and /usr/tmp will cause
- * buffer overflows.
- */
-
-#ifdef P_tmpdir
-#   undef P_tmpdir
-#endif
-#define	P_tmpdir	"/tmp"
-
-char *
-tmpnam(s)
-	char *s;
-{
-	static char name[50];
-	char *mktemp();
-
-	if (!s)
-		s = name;
-	(void)sprintf(s, "%s/XXXXXX", P_tmpdir);
-	return(mktemp(s));
-}
diff --git a/compat/unistd.h b/compat/unistd.h
index 1a40e90..2de5bd0 100644
--- a/compat/unistd.h
+++ b/compat/unistd.h
@@ -1,82 +1,76 @@
 /*
  * unistd.h --
  *
- *      Macros, CONSTants and prototypes for Posix conformance.
+ *      Macros, constants and prototypes for Posix conformance.
  *
- * Copyright 1989 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies.  The University of California
- * makes no representations about the suitability of this
- * software for any purpose.  It is provided "as is" without
- * express or implied warranty.
+ * Copyright 1989 Regents of the University of California Permission to use,
+ * copy, modify, and distribute this software and its documentation for any
+ * purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies. The University of California makes
+ * no representations about the suitability of this software for any purpose.
+ * It is provided "as is" without express or implied warranty.
  */
 
 #ifndef _UNISTD
 #define _UNISTD
 
 #include <sys/types.h>
-#ifndef _TCL
-#   include "tcl.h"
-#endif
 
 #ifndef NULL
 #define NULL    0
 #endif
 
 /* 
- * Strict POSIX stuff goes here.  Extensions go down below, in the 
- * ifndef _POSIX_SOURCE section.
+ * Strict POSIX stuff goes here. Extensions go down below, in the ifndef
+ * _POSIX_SOURCE section.
  */
 
-extern void _exit _ANSI_ARGS_((int status));
-extern int access _ANSI_ARGS_((CONST char *path, int mode));
-extern int chdir _ANSI_ARGS_((CONST char *path));
-extern int chown _ANSI_ARGS_((CONST char *path, uid_t owner, gid_t group));
-extern int close _ANSI_ARGS_((int fd));
-extern int dup _ANSI_ARGS_((int oldfd));
-extern int dup2 _ANSI_ARGS_((int oldfd, int newfd));
-extern int execl _ANSI_ARGS_((CONST char *path, ...));
-extern int execle _ANSI_ARGS_((CONST char *path, ...));
-extern int execlp _ANSI_ARGS_((CONST char *file, ...));
-extern int execv _ANSI_ARGS_((CONST char *path, char **argv));
-extern int execve _ANSI_ARGS_((CONST char *path, char **argv, char **envp));
-extern int execvp _ANSI_ARGS_((CONST char *file, char **argv));
-extern pid_t fork _ANSI_ARGS_((void));
-extern char *getcwd _ANSI_ARGS_((char *buf, size_t size));
-extern gid_t getegid _ANSI_ARGS_((void));
-extern uid_t geteuid _ANSI_ARGS_((void));
-extern gid_t getgid _ANSI_ARGS_((void));
-extern int getgroups _ANSI_ARGS_((int bufSize, int *buffer));
-extern pid_t getpid _ANSI_ARGS_((void));
-extern uid_t getuid _ANSI_ARGS_((void));
-extern int isatty _ANSI_ARGS_((int fd));
-extern long lseek _ANSI_ARGS_((int fd, long offset, int whence));
-extern int pipe _ANSI_ARGS_((int *fildes));
-extern int read _ANSI_ARGS_((int fd, char *buf, size_t size));
-extern int setgid _ANSI_ARGS_((gid_t group));
-extern int setuid _ANSI_ARGS_((uid_t user));
-extern unsigned sleep _ANSI_ARGS_ ((unsigned seconds));
-extern char *ttyname _ANSI_ARGS_((int fd));
-extern int unlink _ANSI_ARGS_((CONST char *path));
-extern int write _ANSI_ARGS_((int fd, CONST char *buf, size_t size));
+extern void		_exit(int status);
+extern int		access(const char *path, int mode);
+extern int		chdir(const char *path);
+extern int		chown(const char *path, uid_t owner, gid_t group);
+extern int		close(int fd);
+extern int		dup(int oldfd);
+extern int		dup2(int oldfd, int newfd);
+extern int		execl(const char *path, ...);
+extern int		execle(const char *path, ...);
+extern int		execlp(const char *file, ...);
+extern int		execv(const char *path, char **argv);
+extern int		execve(const char *path, char **argv, char **envp);
+extern int		execvpw(const char *file, char **argv);
+extern pid_t		fork(void);
+extern char *		getcwd(char *buf, size_t size);
+extern gid_t		getegid(void);
+extern uid_t		geteuid(void);
+extern gid_t		getgid(void);
+extern int		getgroups(int bufSize, int *buffer);
+extern pid_t		getpid(void);
+extern uid_t		getuid(void);
+extern int		isatty(int fd);
+extern long		lseek(int fd, long offset, int whence);
+extern int		pipe(int *fildes);
+extern int		read(int fd, char *buf, size_t size);
+extern int		setgid(gid_t group);
+extern int		setuid(uid_t user);
+extern unsigned		sleep(unsigned seconds);
+extern char *		ttyname(int fd);
+extern int		unlink(const char *path);
+extern int		write(int fd, const char *buf, size_t size);
 
 #ifndef	_POSIX_SOURCE
-extern char *crypt _ANSI_ARGS_((CONST char *, CONST char *));
-extern int fchown _ANSI_ARGS_((int fd, uid_t owner, gid_t group));
-extern int flock _ANSI_ARGS_((int fd, int operation));
-extern int ftruncate _ANSI_ARGS_((int fd, unsigned long length));
-extern int ioctl _ANSI_ARGS_((int fd, int request, ...));
-extern int readlink _ANSI_ARGS_((CONST char *path, char *buf, int bufsize));
-extern int setegid _ANSI_ARGS_((gid_t group));
-extern int seteuid _ANSI_ARGS_((uid_t user));
-extern int setreuid _ANSI_ARGS_((int ruid, int euid));
-extern int symlink _ANSI_ARGS_((CONST char *, CONST char *));
-extern int ttyslot _ANSI_ARGS_((void));
-extern int truncate _ANSI_ARGS_((CONST char *path, unsigned long length));
-extern int vfork _ANSI_ARGS_((void));
+extern char *		crypt(const char *, const char *);
+extern int		fchown(int fd, uid_t owner, gid_t group);
+extern int		flock(int fd, int operation);
+extern int		ftruncate(int fd, unsigned long length);
+extern int		ioctl(int fd, int request, ...);
+extern int		readlink(const char *path, char *buf, int bufsize);
+extern int		setegid(gid_t group);
+extern int		seteuidw(uid_t user);
+extern int		setreuid(int ruid, int euid);
+extern int		symlink(const char *, const char *);
+extern int		ttyslot(void);
+extern int		truncate(const char *path, unsigned long length);
+extern int		vfork(void);
 #endif /* _POSIX_SOURCE */
 
 #endif /* _UNISTD */
-
diff --git a/compat/waitpid.c b/compat/waitpid.c
index a5960ce..8f65799 100644
--- a/compat/waitpid.c
+++ b/compat/waitpid.c
@@ -1,19 +1,17 @@
 /* 
  * waitpid.c --
  *
- *	This procedure emulates the POSIX waitpid kernel call on
- *	BSD systems that don't have waitpid but do have wait3.
- *	This code is based on a prototype version written by
- *	Mark Diekhans and Karl Lehenbauer.
+ *	This procedure emulates the POSIX waitpid kernel call on BSD systems
+ *	that don't have waitpid but do have wait3. This code is based on a
+ *	prototype version written by Mark Diekhans and Karl Lehenbauer.
  *
  * Copyright (c) 1993 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include "tclInt.h"
 #include "tclPort.h"
 
 #ifndef pid_t
@@ -21,40 +19,37 @@
 #endif
 
 /*
- * A linked list of the following structures is used to keep track
- * of processes for which we received notification from the kernel,
- * but the application hasn't waited for them yet (this can happen
- * because wait may not return the process we really want).  We
- * save the information here until the application finally does
- * wait for the process.
+ * A linked list of the following structures is used to keep track of
+ * processes for which we received notification from the kernel, but the
+ * application hasn't waited for them yet (this can happen because wait may
+ * not return the process we really want). We save the information here until
+ * the application finally does wait for the process.
  */
 
 typedef struct WaitInfo {
-    pid_t pid;				/* Pid of process that exited. */
-    WAIT_STATUS_TYPE status;		/* Status returned when child exited
-					 * or suspended. */
-    struct WaitInfo *nextPtr;		/* Next in list of exited processes. */
+    pid_t pid;			/* Pid of process that exited. */
+    WAIT_STATUS_TYPE status;	/* Status returned when child exited or
+				 * suspended. */
+    struct WaitInfo *nextPtr;	/* Next in list of exited processes. */
 } WaitInfo;
 
-static WaitInfo *deadList = NULL;	/* First in list of all dead
-					 * processes. */
+static WaitInfo *deadList = NULL;
+				/* First in list of all dead processes. */
 
 /*
  *----------------------------------------------------------------------
  *
  * waitpid --
  *
- *	This procedure emulates the functionality of the POSIX
- *	waitpid kernel call, using the BSD wait3 kernel call.
- *	Note:  it doesn't emulate absolutely all of the waitpid
- *	functionality, in that it doesn't support pid's of 0
- *	or < -1.
+ *	This procedure emulates the functionality of the POSIX waitpid kernel
+ *	call, using the BSD wait3 kernel call. Note: it doesn't emulate
+ *	absolutely all of the waitpid functionality, in that it doesn't
+ *	support pid's of 0 or < -1.
  *
  * Results:
- *	-1 is returned if there is an error in the wait kernel call.
- *	Otherwise the pid of an exited or suspended process is
- *	returned and *statusPtr is set to the status value of the
- *	process.
+ *	-1 is returned if there is an error in the wait kernel call. Otherwise
+ *	the pid of an exited or suspended process is returned and *statusPtr
+ *	is set to the status value of the process.
  *
  * Side effects:
  *	None.
@@ -67,12 +62,12 @@ static WaitInfo *deadList = NULL;	/* First in list of all dead
 #endif
 
 pid_t
-waitpid(pid, statusPtr, options)
-    pid_t pid;			/* The pid to wait on.  Must be -1 or
-				 * greater than zero. */
-    int *statusPtr;		/* Where to store wait status for the
+waitpid(
+    pid_t pid,			/* The pid to wait on. Must be -1 or greater
+				 * than zero. */
+    int *statusPtr,		/* Where to store wait status for the
 				 * process. */
-    int options;		/* OR'ed combination of WNOHANG and
+    int options)		/* OR'ed combination of WNOHANG and
 				 * WUNTRACED. */
 {
     register WaitInfo *waitPtr, *prevPtr;
@@ -85,9 +80,9 @@ waitpid(pid, statusPtr, options)
     }
 
     /*
-     * See if there's a suitable process that has already stopped or
-     * exited. If so, remove it from the list of exited processes and
-     * return its information.
+     * See if there's a suitable process that has already stopped or exited.
+     * If so, remove it from the list of exited processes and return its
+     * information.
      */
 
     for (waitPtr = deadList, prevPtr = NULL; waitPtr != NULL;
@@ -110,12 +105,12 @@ waitpid(pid, statusPtr, options)
     }
 
     /*
-     * Wait for any process to stop or exit.  If it's an acceptable one
-     * then return it to the caller;  otherwise store information about it
-     * in the list of exited processes and try again.  On systems that
-     * have only wait but not wait3, there are several situations we can't
-     * handle, but we do the best we can (e.g. can still handle some
-     * combinations of options by invoking wait instead of wait3).
+     * Wait for any process to stop or exit. If it's an acceptable one then
+     * return it to the caller; otherwise store information about it in the
+     * list of exited processes and try again. On systems that have only wait
+     * but not wait3, there are several situations we can't handle, but we do
+     * the best we can (e.g. can still handle some combinations of options by
+     * invoking wait instead of wait3).
      */
 
     while (1) {
@@ -148,13 +143,13 @@ waitpid(pid, statusPtr, options)
 	return result;
 
 	/*
-	 * Can't return this info to caller.  Save it in the list of
-	 * stopped or exited processes.  Tricky point: first check for
-	 * an existing entry for the process and overwrite it if it
-	 * exists (e.g. a previously stopped process might now be dead).
+	 * Can't return this info to caller. Save it in the list of stopped or
+	 * exited processes. Tricky point: first check for an existing entry
+	 * for the process and overwrite it if it exists (e.g. a previously
+	 * stopped process might now be dead).
 	 */
 
-	saveInfo:
+    saveInfo:
 	for (waitPtr = deadList; waitPtr != NULL; waitPtr = waitPtr->nextPtr) {
 	    if (waitPtr->pid == result) {
 		waitPtr->status = status;
@@ -167,6 +162,7 @@ waitpid(pid, statusPtr, options)
 	waitPtr->nextPtr = deadList;
 	deadList = waitPtr;
 
-	waitAgain: continue;
+    waitAgain:
+	continue;
     }
 }
diff --git a/doc/Access.3 b/doc/Access.3
index cab6466..98d6635 100644
--- a/doc/Access.3
+++ b/doc/Access.3
@@ -19,7 +19,7 @@ int
 int
 \fBTcl_Stat\fR(\fIpath\fR, \fIstatPtr\fR)
 .SH ARGUMENTS
-.AS "struct stat" *statPtr in
+.AS "struct stat" *statPtr out
 .AP char *path in
 Native name of the file to check the attributes of.
 .AP int mode in
diff --git a/doc/AddErrInfo.3 b/doc/AddErrInfo.3
index 7351dce..136a16f 100644
--- a/doc/AddErrInfo.3
+++ b/doc/AddErrInfo.3
@@ -6,17 +6,29 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH Tcl_AddErrorInfo 3 8.0 Tcl "Tcl Library Procedures"
+.TH Tcl_AddErrorInfo 3 8.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_AddObjErrorInfo, Tcl_AddErrorInfo, Tcl_SetObjErrorCode, Tcl_SetErrorCode, Tcl_SetErrorCodeVA, Tcl_PosixError, Tcl_LogCommandInfo \- record information about errors
+Tcl_GetReturnOptions, Tcl_SetReturnOptions, Tcl_AddErrorInfo, Tcl_AppendObjToErrorInfo, Tcl_AddObjErrorInfo, Tcl_SetObjErrorCode, Tcl_SetErrorCode, Tcl_SetErrorCodeVA, Tcl_PosixError, Tcl_LogCommandInfo \- retrieve or record information about errors and other return options
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
+.VS 8.5
 .sp
-\fBTcl_AddObjErrorInfo\fR(\fIinterp, message, length\fR)
+Tcl_Obj *
+\fBTcl_GetReturnOptions\fR(\fIinterp, code\fR)
+.sp
+int 
+\fBTcl_SetReturnOptions\fR(\fIinterp, options\fR)
+.VE 8.5
 .sp
 \fBTcl_AddErrorInfo\fR(\fIinterp, message\fR)
+.VS 8.5
+.sp
+\fBTcl_AppendObjToErrorInfo\fR(\fIinterp, objPtr\fR)
+.VE 8.5
+.sp
+\fBTcl_AddObjErrorInfo\fR(\fIinterp, message, length\fR)
 .sp
 \fBTcl_SetObjErrorCode\fR(\fIinterp, errorObjPtr\fR)
 .sp
@@ -24,38 +36,47 @@ Tcl_AddObjErrorInfo, Tcl_AddErrorInfo, Tcl_SetObjErrorCode, Tcl_SetErrorCode, Tc
 .sp
 \fBTcl_SetErrorCodeVA\fR(\fIinterp, argList\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_PosixError\fR(\fIinterp\fR)
 .sp
 void
 \fBTcl_LogCommandInfo\fR(\fIinterp, script, command, commandLength\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *message
+.AS Tcl_Interp commandLength
 .AP Tcl_Interp *interp in
 Interpreter in which to record information.
+.AP int code 
+The code returned from script evaluation.
+.AP Tcl_Obj *options
+A dictionary of return options.
 .AP char *message in
+For \fBTcl_AddErrorInfo\fR,
+this is a conventional C string to append to the \fB\-errorinfo\fR return option.
 For \fBTcl_AddObjErrorInfo\fR,
-this points to the first byte of an array of bytes
-containing a string to record in the \fBerrorInfo\fR variable.
+this points to the first byte of an array of \fIlength\fR bytes
+containing a string to append to the \fB\-errorinfo\fR return option.
 This byte array may contain embedded null bytes
 unless \fIlength\fR is negative.
-For \fBTcl_AddErrorInfo\fR,
-this is a conventional C string to record in the \fBerrorInfo\fR variable.
+.VS 8.5
+.AP Tcl_Obj *objPtr in
+A message to be appended to the \fB\-errorinfo\fR return option
+in the form of a Tcl_Obj value.
+.VE 8.5
 .AP int length in
 The number of bytes to copy from \fImessage\fR when
-setting the \fBerrorInfo\fR variable.
+appending to the \fB\-errorinfo\fR return option.
 If negative, all bytes up to the first null byte are used.
 .AP Tcl_Obj *errorObjPtr in
-This variable \fBerrorCode\fR will be set to this value.
+The \fB\-errorcode\fR return option will be set to this value.
 .AP char *element in
-String to record as one element of \fBerrorCode\fR variable.
+String to record as one element of the \fB\-errorcode\fR return option.
 Last \fIelement\fR argument must be NULL.
 .AP va_list argList in
 An argument list which must have been initialized using
-\fBTCL_VARARGS_START\fR, and cleared using \fBva_end\fR.
-.AP "CONST char" *script in
+\fBva_start\fR, and cleared using \fBva_end\fR.
+.AP "const char" *script in
 Pointer to first character in script containing command (must be <= command)
-.AP "CONST char" *command in
+.AP "const char" *command in
 Pointer to first character in command that generated the error
 .AP int commandLength in
 Number of bytes in command; -1 means use all bytes up to first null byte
@@ -63,70 +84,156 @@ Number of bytes in command; -1 means use all bytes up to first null byte
 
 .SH DESCRIPTION
 .PP
-These procedures are used to manipulate two Tcl global variables
-that hold information about errors.
-The variable \fBerrorInfo\fR holds a stack trace of the
+.VS 8.5
+The \fBTcl_SetReturnOptions\fR and \fBTcl_GetReturnOptions\fR
+routines expose the same capabilities as the \fBreturn\fR and
+\fBcatch\fR commands, respectively, in the form of a C interface.
+.PP
+\fBTcl_GetReturnOptions\fR retrieves the dictionary of return options
+from an interpreter following a script evaluation.
+Routines such as \fBTcl_Eval\fR are called to evaluate a
+script in an interpreter.  These routines return an integer
+completion code.  These routines also leave in the interpreter
+both a result and a dictionary of return options generated
+by script evaluation.  Just as \fBTcl_GetObjResult\fR retrieves
+the result, \fBTcl_GetReturnOptions\fR retrieves the dictionary
+of return options.  The integer completion code should be
+passed as the \fIcode\fR argument to \fBTcl_GetReturnOptions\fR
+so that all required options will be present in the dictionary.
+Specifically, a \fIcode\fR value of \fBTCL_ERROR\fR will
+ensure that entries for the keys \fB\-errorinfo\fR,
+\fB\-errorcode\fR, and \fB\-errorline\fR will appear in the
+dictionary.  Also, the entries for the keys \fB\-code\fR
+and \fB\-level\fR will be adjusted if necessary to agree
+with the value of \fIcode\fR.  The \fB(Tcl_Obj *)\fR returned
+by \fBTcl_GetReturnOptions\fR points to an unshared
+\fBTcl_Obj\fR with reference count of zero.  The dictionary
+may be written to, either adding, removing, or overwriting
+any entries in it, without the need to check for a shared object.
+.PP
+A typical usage for \fBTcl_GetReturnOptions\fR is to
+retrieve the stack trace when script evaluation returns
+\fBTCL_ERROR\fR, like so:
+.CS
+int code = Tcl_Eval(interp, script);
+if (code == TCL_ERROR) {
+    Tcl_Obj *options = Tcl_GetReturnOptions(interp, code);  
+    Tcl_Obj *key = Tcl_NewStringObj("-errorinfo", -1);
+    Tcl_Obj *stackTrace;
+    Tcl_IncrRefCount(key);
+    Tcl_DictObjGet(NULL, options, key, &stackTrace);
+    Tcl_DecrRefCount(key);
+    /* Do something with stackTrace */
+}
+.CE
+.PP
+\fBTcl_SetReturnOptions\fR sets the return options
+of \fIinterp\fR to be \fIoptions\fR.  If \fIoptions\fR
+contains any invalid value for any key, TCL_ERROR will
+be returned, and the interp result will be set to an
+appropriate error message.  Otherwise, a completion code
+in agreement with the \fB\-code\fR and \fB\-level\fR
+keys in \fIoptions\fR will be returned.
+.PP
+As an example, Tcl's \fBreturn\fR command itself could
+be implemented in terms of \fBTcl_SetReturnOptions\fR
+like so:
+.CS
+if ((objc % 2) == 0) { /* explicit result argument */
+    objc--;
+    Tcl_SetObjResult(interp, objv[objc]);
+}
+return Tcl_SetReturnOptions(interp, Tcl_NewListObj(objc-1, objv+1));
+.CE
+(It is not really implemented that way.  Internal access
+privileges allow for a more efficient alternative that meshes
+better with the bytecode compiler.)
+.PP
+Note that a newly created \fBTcl_Obj\fR may be passed
+in as the \fIoptions\fR argument without the need to tend
+to any reference counting.  This is analogous to
+\fBTcl_SetObjResult\fR.
+.PP
+While \fBTcl_SetReturnOptions\fR provides a general interface
+to set any collection of return options, there are a handful
+of return options that are very frequently used.  Most 
+notably the \fB\-errorinfo\fR and \fB\-errorcode\fR return
+options should be set properly when the command procedure
+of a command returns \fBTCL_ERROR\fR.  Tcl provides several
+simpler interfaces to more directly set these return options.
+.VE 8.5
+.PP
+The \fB\-errorinfo\fR option holds a stack trace of the
 operations that were in progress when an error occurred,
 and is intended to be human-readable.
-The variable \fBerrorCode\fR holds a list of items that
+The \fB\-errorcode\fR option holds a list of items that
 are intended to be machine-readable.
-The first item in \fBerrorCode\fR identifies the class of
+The first item in the \fB\-errorcode\fR value identifies the class of
 error that occurred
 (e.g. POSIX means an error occurred in a POSIX system call)
-and additional elements in \fBerrorCode\fR hold additional pieces
+and additional elements hold additional pieces
 of information that depend on the class.
-See the Tcl overview manual entry for details on the various
-formats for \fBerrorCode\fR.
+See the tclvars manual entry for details on the various
+formats for the \fB\-errorcode\fR option used by
+Tcl's built-in commands.
 .PP
-The \fBerrorInfo\fR variable is gradually built up as an
+The \fB\-errorinfo\fR option value is gradually built up as an
 error unwinds through the nested operations.
-Each time an error code is returned to \fBTcl_EvalObjEx\fR
-(or \fBTcl_Eval\fR, which calls \fBTcl_EvalObjEx\fR)
-it calls the procedure \fBTcl_AddObjErrorInfo\fR to add
-additional text to \fBerrorInfo\fR describing the
+Each time an error code is returned to \fBTcl_Eval\fR, or
+any of the routines that performs script evaluation,
+the procedure \fBTcl_AddErrorInfo\fR is called to add
+additional text to the \fB\-errorinfo\fR value describing the
 command that was being executed when the error occurred.
 By the time the error has been passed all the way back
 to the application, it will contain a complete trace
 of the activity in progress when the error occurred.
 .PP
 It is sometimes useful to add additional information to
-\fBerrorInfo\fR beyond what can be supplied automatically
-by \fBTcl_EvalObjEx\fR.
-\fBTcl_AddObjErrorInfo\fR may be used for this purpose:
-its \fImessage\fR and \fIlength\fR arguments describe an additional
-string to be appended to \fBerrorInfo\fR.
-For example, the \fBsource\fR command calls \fBTcl_AddObjErrorInfo\fR
-to record the name of the file being processed and the
-line number on which the error occurred;
-for Tcl procedures, the procedure name and line number
+the \fB\-errorinfo\fR value beyond what can be supplied automatically
+by the script evaluation routines.
+\fBTcl_AddErrorInfo\fR may be used for this purpose:
+its \fImessage\fR argument is an additional
+string to be appended to the \fB\-errorinfo\fR option.
+For example, when an error arises during the \fBsource\fR command,
+the procedure \fBTcl_AddErrorInfo\fR is called to
+record the name of the file being processed and the
+line number on which the error occurred.
+Likewise, when an error arises during evaluation of a
+Tcl procedures, the procedure name and line number
 within the procedure are recorded, and so on.
-The best time to call \fBTcl_AddObjErrorInfo\fR is just after
-\fBTcl_EvalObjEx\fR has returned \fBTCL_ERROR\fR.
-In calling \fBTcl_AddObjErrorInfo\fR, you may find it useful to
-use the \fBerrorLine\fR field of the interpreter (see the
-\fBTcl_Interp\fR manual entry for details).
-.PP
-\fBTcl_AddErrorInfo\fR resembles \fBTcl_AddObjErrorInfo\fR
-but differs in initializing \fBerrorInfo\fR from the string
-value of the interpreter's result
-if the error is just starting to be logged.
-It does not use the result as a Tcl object
-so any embedded null characters in the result
-will cause information to be lost.
-It also takes a conventional C string in \fImessage\fR
-instead of \fBTcl_AddObjErrorInfo\fR's counted string.
+The best time to call \fBTcl_AddErrorInfo\fR is just after
+a script evaluation routine has returned \fBTCL_ERROR\fR.
+The value of the \fB\-errorline\fR return option (retrieved
+via a call to \fBTcl_GetReturnOptions\fR) often makes up
+a useful part of the \fImessage\fR passed to \fBTcl_AddErrorInfo\fR.
+.PP
+.VS 8.5
+\fBTcl_AppendObjToErrorInfo\fR is an alternative interface to the
+same functionality as \fBTcl_AddErrorInfo\fR.  \fBTcl_AppendObjToErrorInfo\fR
+is called when the string value to be appended to the \fB\-errorinfo\fR option
+is available as a \fBTcl_Obj\fR instead of as a \fBchar\fR array.
+.VE 8.5
+.PP
+\fBTcl_AddObjErrorInfo\fR is nearly identical
+to \fBTcl_AddErrorInfo\fR, except that it has an additional \fIlength\fR
+argument.  This allows the \fImessage\fR string to contain 
+embedded null bytes.  This is essentially never a good idea.
+If the \fImessage\fR needs to contain the null character \fBU+0000\fR,
+Tcl's usual internal encoding rules should be used to avoid
+the need for a null byte.  If the \fBTcl_AddObjErrorInfo\fR
+interface is used at all, it should be with a negative \fIlength\fR value.
 .PP
 The procedure \fBTcl_SetObjErrorCode\fR is used to set the
-\fBerrorCode\fR variable. \fIerrorObjPtr\fR contains a list object
-built up by the caller. \fBerrorCode\fR is set to this
-value. \fBTcl_SetObjErrorCode\fR is typically invoked just 
-before returning an error in an object command. If an error is
+\fB\-errorcode\fR return option to the list object \fIerrorObjPtr\fR 
+built up by the caller. 
+\fBTcl_SetObjErrorCode\fR is typically invoked just 
+before returning an error. If an error is
 returned without calling \fBTcl_SetObjErrorCode\fR or
 \fBTcl_SetErrorCode\fR the Tcl interpreter automatically sets
-\fBerrorCode\fR to \fBNONE\fR.
+the \fB\-errorcode\fR return option to \fBNONE\fR.
 .PP
 The procedure \fBTcl_SetErrorCode\fR is also used to set the
-\fBerrorCode\fR variable. However, it takes one or more strings to
+\fB\-errorcode\fR return option. However, it takes one or more strings to
 record instead of an object. Otherwise, it is similar to
 \fBTcl_SetObjErrorCode\fR in behavior.
 .PP
@@ -134,9 +241,10 @@ record instead of an object. Otherwise, it is similar to
 instead of taking a variable number of arguments it takes an argument list.
 .PP
 \fBTcl_PosixError\fR
-sets the \fBerrorCode\fR variable after an error in a POSIX kernel call.
+sets the \fB\-errorcode\fR variable after an error in a POSIX kernel call.
 It reads the value of the \fBerrno\fR C variable and calls
-\fBTcl_SetErrorCode\fR to set \fBerrorCode\fR in the \fBPOSIX\fR format.
+\fBTcl_SetErrorCode\fR to set the \fB\-errorcode\fR return
+option in the \fBPOSIX\fR format.
 The caller must previously have called \fBTcl_SetErrno\fR to set
 \fBerrno\fR; this is necessary on some platforms (e.g. Windows) where Tcl
 is linked into an application as a shared library, or when the error
@@ -146,41 +254,44 @@ occurs in a dynamically loaded extension. See the manual entry for
 \fBTcl_PosixError\fR returns a human-readable diagnostic message
 for the error
 (this is the same value that will appear as the third element
-in \fBerrorCode\fR).
+in the \fB\-errorcode\fR value).
 It may be convenient to include this string as part of the
 error message returned to the application in
 the interpreter's result.
 .PP
 \fBTcl_LogCommandInfo\fR is invoked after an error occurs in an
 interpreter.  It adds information about the command that was being
-executed when the error occurred to the \fBerrorInfo\fR variable, and
-the line number stored internally in the interpreter is set.  On the
-first call to \fBTcl_LogCommandInfo\fR or \fBTcl_AddObjErrorInfo\fR
-since an error occurred, the old information in \fBerrorInfo\fR is
-deleted.
+executed when the error occurred to the \fB\-errorinfo\fR value, and
+the line number stored internally in the interpreter is set.  
+.PP
+In older releases of Tcl, there was no \fBTcl_GetReturnOptions\fR
+routine.  In its place, the global Tcl variables \fBerrorInfo\fR
+and \fBerrorCode\fR were the only place to retrieve the error
+information.  Much existing code written for older Tcl releases
+still access this information via those global variables.
 .PP
-It is important to call the procedures described here rather than
+It is important to realize that while reading from those
+global variables remains a supported way to access these
+return option values, it is important not to assume that
+writing to those global variables will properly set the
+corresponding return options.  It has long been emphasized
+in this manual page that it is important to 
+call the procedures described here rather than
 setting \fBerrorInfo\fR or \fBerrorCode\fR directly with
 \fBTcl_ObjSetVar2\fR.
-The reason for this is that the Tcl interpreter keeps information
-about whether these procedures have been called.
-For example, the first time \fBTcl_AddObjErrorInfo\fR is called
-for an error, it clears the existing value of \fBerrorInfo\fR
-and adds the error message in the interpreter's result to the variable
-before appending \fImessage\fR;
-in subsequent calls, it just appends the new \fImessage\fR.
-When \fBTcl_SetErrorCode\fR is called, it sets a flag indicating
-that \fBerrorCode\fR has been set;
-this allows the Tcl interpreter to set \fBerrorCode\fR to \fBNONE\fR
-if it receives an error return
-when \fBTcl_SetErrorCode\fR hasn't been called.
 .PP
 If the procedure \fBTcl_ResetResult\fR is called,
-it clears all of the state associated with
-\fBerrorInfo\fR and \fBerrorCode\fR
-(but it doesn't actually modify the variables).
-If an error had occurred, this will clear the error state to
-make it appear as if no error had occurred after all.
+it clears all of the state of the interpreter associated with
+script evaluation, including the entire return options dictionary.
+In particular, the \fB\-errorinfo\fR and \fB\-errorcode\fR options
+are reset.  
+If an error had occurred, the \fBTcl_ResetResult\fR call will
+clear the error state to make it appear as if no error had
+occurred after all.
+The global variables \fBerrorInfo\fR and
+\fBerrorCode\fR are not modified by \fBTcl_ResetResult\fR
+so they continue to hold a record of information about the
+most recent error seen in an interpreter.
 
 .SH "SEE ALSO"
 Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_Interp, Tcl_ResetResult, Tcl_SetErrno
diff --git a/doc/Alloc.3 b/doc/Alloc.3
index e90114d..ca4f949 100644
--- a/doc/Alloc.3
+++ b/doc/Alloc.3
@@ -67,22 +67,24 @@ further allocation.
 \fBTcl_Realloc\fR changes the size of the block pointed to by
 \fIptr\fR to \fIsize\fR bytes and returns a pointer to the new block.
 The contents will be unchanged up to the lesser of the new and old
-sizes.  The returned location may be different from \fIptr\fR.
+sizes.  The returned location may be different from \fIptr\fR.  If
+\fIptr\fR is NULL, this is equivalent to calling \fBTcl_Alloc\fR with
+just the \fIsize\fR argument.
 .PP
 \fBTcl_AttemptAlloc\fR and \fBTcl_AttemptRealloc\fR are identical in
 function to \fBTcl_Alloc\fR and \fBTcl_Realloc\fR, except that
 \fBTcl_AttemptAlloc\fR and \fBTcl_AttemptRealloc\fR will not cause the Tcl
 interpreter to \fBpanic\fR if the memory allocation fails.  If the
 allocation fails, these functions will return NULL.  Note that on some
-platforms, attempting to allocate a block of memory will also cause
-these functions to return NULL.
+platforms, but not all, attempting to allocate a zero-sized block of
+memory will also cause these functions to return NULL.
 .PP
 The procedures \fBckalloc\fR, \fBckfree\fR, \fBckrealloc\fR,
 \fBattemptckalloc\fR, and \fBattemptckrealloc\fR are implemented
 as macros.  Normally, they are synonyms for the corresponding
 procedures documented on this page.  When Tcl and all modules
 calling Tcl are compiled with \fBTCL_MEM_DEBUG\fR defined, however,
-these macros are redefined to be special debugging versions of 
+these macros are redefined to be special debugging versions
 of these procedures.  To support Tcl's memory debugging within a
 module, use the macros rather than direct calls to \fBTcl_Alloc\fR, etc.
 
diff --git a/doc/AllowExc.3 b/doc/AllowExc.3
index 621ea47..ae595f1 100644
--- a/doc/AllowExc.3
+++ b/doc/AllowExc.3
@@ -16,7 +16,7 @@ Tcl_AllowExceptions \- allow all exceptions in next script evaluation
 .sp
 \fBTcl_AllowExceptions\fR(\fIinterp\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *doublePtr
+.AS Tcl_Interp *interp
 .AP Tcl_Interp *interp in
 Interpreter in which script will be evaluated.
 .BE
@@ -25,8 +25,8 @@ Interpreter in which script will be evaluated.
 .PP
 If a script is evaluated at top-level (i.e. no other scripts are
 pending evaluation when the script is invoked), and if the script
-terminates with a completion code other than TCL_OK, TCL_ERROR
-or TCL_RETURN, then Tcl normally converts this into a TCL_ERROR
+terminates with a completion code other than \fBTCL_OK\fR, \fBTCL_ERROR\fR
+or \fBTCL_RETURN\fR, then Tcl normally converts this into a \fBTCL_ERROR\fR
 return with an appropriate message.  The particular script
 evaluation procedures of Tcl that act in the manner are
 \fBTcl_EvalObjEx\fR, \fBTcl_EvalObjv\fR, \fBTcl_Eval\fR, \fBTcl_EvalEx\fR,
@@ -38,7 +38,7 @@ calling one of those a procedures, then arbitrary completion
 codes are permitted from the script, and they are returned without
 modification.
 This is useful in cases where the caller can deal with exceptions
-such as TCL_BREAK or TCL_CONTINUE in a meaningful way.
+such as \fBTCL_BREAK\fR or \fBTCL_CONTINUE\fR in a meaningful way.
 
 .SH KEYWORDS
 continue, break, exception, interpreter
diff --git a/doc/AppInit.3 b/doc/AppInit.3
index 14d30cf..0473090 100644
--- a/doc/AppInit.3
+++ b/doc/AppInit.3
@@ -24,7 +24,9 @@ Interpreter for the application.
 
 .SH DESCRIPTION
 .PP
-\fBTcl_AppInit\fR is a ``hook'' procedure that is invoked by
+\fBTcl_AppInit\fR is a
+.QW hook
+procedure that is invoked by
 the main programs for Tcl applications such as \fBtclsh\fR and \fBwish\fR.
 Its purpose is to allow new Tcl applications to be created without
 modifying the main programs provided as part of Tcl and Tk.
@@ -47,8 +49,8 @@ Tcl variables \fBargv\fR and \fBargv0\fR in \fIinterp\fR.
 .IP [3]
 Invoke a startup script to initialize the application.
 .LP
-\fBTcl_AppInit\fR returns TCL_OK or TCL_ERROR.
-If it returns TCL_ERROR then it must leave an error message in
+\fBTcl_AppInit\fR returns \fBTCL_OK\fR or \fBTCL_ERROR\fR.
+If it returns \fBTCL_ERROR\fR then it must leave an error message in
 for the interpreter's result;  otherwise the result is ignored.
 .PP
 In addition to \fBTcl_AppInit\fR, your application should also contain
@@ -58,7 +60,7 @@ Tcl_Main(argc, argv, Tcl_AppInit);
 .CE
 The third argument to \fBTcl_Main\fR gives the address of the
 application-specific initialization procedure to invoke.
-This means that you don't have to use the name \fBTcl_AppInit\fR
+This means that you do not have to use the name \fBTcl_AppInit\fR
 for the procedure, but in practice the name is nearly always
 \fBTcl_AppInit\fR (in versions before Tcl 7.4 the name \fBTcl_AppInit\fR
 was implicit;  there was no way to specify the procedure explicitly).
diff --git a/doc/AssocData.3 b/doc/AssocData.3
index 105ebd6..e4c7bab 100644
--- a/doc/AssocData.3
+++ b/doc/AssocData.3
@@ -8,9 +8,7 @@
 .TH Tcl_SetAssocData 3 7.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_GetAssocData, Tcl_SetAssocData, Tcl_DeleteAssocData \- manage
-associations of string keys and user specified data with Tcl
-interpreters.
+Tcl_GetAssocData, Tcl_SetAssocData, Tcl_DeleteAssocData \- manage associations of string keys and user specified data with Tcl interpreters
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -22,12 +20,10 @@ ClientData
 .sp
 \fBTcl_DeleteAssocData\fR(\fIinterp, key\fR)
 .SH ARGUMENTS
-.AS Tcl_InterpDeleteProc *delProcPtr
+.AS Tcl_InterpDeleteProc **delProcPtr
 .AP Tcl_Interp *interp in
 Interpreter in which to execute the specified command.
-.VS 8.4
-.AP "CONST char" *key in
-.VE
+.AP "const char" *key in
 Key for association with which to store data or from which to delete or
 retrieve data.  Typically the module prefix for a package.
 .AP Tcl_InterpDeleteProc *delProc in
@@ -67,8 +63,8 @@ is deleted.  \fIDeleteProc\fR should have arguments and result that match
 the type \fBTcl_InterpDeleteProc\fR:
 .CS
 typedef void Tcl_InterpDeleteProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR);
 .CE
 When \fIdeleteProc\fR is invoked the \fIclientData\fR and \fIinterp\fR
 arguments will be the same as the corresponding arguments passed to
diff --git a/doc/Async.3 b/doc/Async.3
index cc3354b..c4439a4 100644
--- a/doc/Async.3
+++ b/doc/Async.3
@@ -48,9 +48,9 @@ or 0 if \fIinterp\fR is NULL.
 These procedures provide a safe mechanism for dealing with
 asynchronous events such as signals.
 If an event such as a signal occurs while a Tcl script is being
-evaluated then it isn't safe to take any substantive action to
+evaluated then it is not safe to take any substantive action to
 process the event.
-For example, it isn't safe to evaluate a Tcl script since the
+For example, it is not safe to evaluate a Tcl script since the
 interpreter may already be in the middle of evaluating a script;
 it may not even be safe to allocate memory, since a memory
 allocation could have been in progress when the event occurred.
@@ -140,7 +140,6 @@ If new handlers become ready while handlers are executing,
 \fBTcl_AsyncInvoke\fR will invoke them all;  at each point it
 invokes the highest-priority (oldest) ready handler, repeating
 this over and over until there are no longer any ready handlers.
-
 .SH WARNING
 .PP
 It is almost always a bad idea for an asynchronous event
@@ -150,12 +149,11 @@ This sort of behavior can disrupt the execution of scripts in
 subtle ways and result in bugs that are extremely difficult
 to track down.
 If an asynchronous event handler needs to evaluate Tcl scripts
-then it should first save the interpreter's result plus the values
-of the variables \fBerrorInfo\fR and \fBerrorCode\fR (this can
-be done, for example, by storing them in dynamic strings).
+then it should first save the interpreter's state by calling
+\fBTcl_SaveInterpState\fR, passing in the \fIcode\fR argument.
 When the asynchronous handler is finished it should restore
-the interpreter's result, \fBerrorInfo\fR, and \fBerrorCode\fR,
-and return the \fIcode\fR argument.
+the interpreter's state by calling \fBTcl_RestoreInterpState\fR,
+and then returning the \fIcode\fR argument.
 
 .SH KEYWORDS
-asynchronous event, handler, signal
+asynchronous event, handler, signal, Tcl_SaveInterpState, thread
diff --git a/doc/BackgdErr.3 b/doc/BackgdErr.3
index 532bb44..1e46b03 100644
--- a/doc/BackgdErr.3
+++ b/doc/BackgdErr.3
@@ -24,7 +24,8 @@ Interpreter in which the error occurred.
 .SH DESCRIPTION
 .PP
 This procedure is typically invoked when a Tcl error occurs during
-``background processing'' such as executing an event handler.
+.QW "background processing"
+such as executing an event handler.
 When such an error occurs, the error condition is reported to Tcl
 or to a widget or some other C code, and there is not usually any
 obvious way for that code to report the error to the user.
@@ -32,25 +33,29 @@ In these cases the code calls \fBTcl_BackgroundError\fR with an
 \fIinterp\fR argument identifying the interpreter in which the
 error occurred.  At the time \fBTcl_BackgroundError\fR is invoked,
 the interpreter's result is expected to contain an error message.
-\fBTcl_BackgroundError\fR will invoke the \fBbgerror\fR
-Tcl command to report the error in an application-specific fashion.
-If no \fBbgerror\fR command exists, or if it returns with an error condition,
-then \fBTcl_BackgroundError\fR reports the error itself by printing
-a message on the standard error file.
+\fBTcl_BackgroundError\fR will invoke the command registered
+in that interpreter to handle background errors by the
+\fBinterp bgerror\fR command.
+The registered handler command is meant to report the error
+in an application-specific fashion.  The handler command
+receives two arguments, the result of the interp, and the
+return options of the interp at the time the error occurred.
+If the application registers no handler command, the default
+handler command will attempt to call \fBbgerror\fR to report
+the error.  If an error condition arises while invoking the
+handler command, then \fBTcl_BackgroundError\fR reports the
+error itself by printing a message on the standard error file.
 .PP
-\fBTcl_BackgroundError\fR does not invoke \fBbgerror\fR immediately
+\fBTcl_BackgroundError\fR does not invoke the handler command immediately
 because this could potentially interfere with scripts that are in process
 at the time the error occurred.
-Instead, it invokes \fBbgerror\fR later as an idle callback.
-\fBTcl_BackgroundError\fR saves the values of the \fBerrorInfo\fR and
-\fBerrorCode\fR variables and restores these values just before
-invoking \fBbgerror\fR.
+Instead, it invokes the handler command later as an idle callback.
 .PP
 It is possible for many background errors to accumulate before
-\fBbgerror\fR is invoked.  When this happens, each of the errors
-is processed in order.  However, if \fBbgerror\fR returns a
+the handler command is invoked.  When this happens, each of the errors
+is processed in order.  However, if the handle command returns a
 break exception, then all remaining error reports for the
 interpreter are skipped.
 
 .SH KEYWORDS
-background, bgerror, error
+background, bgerror, error, interp
diff --git a/doc/Backslash.3 b/doc/Backslash.3
index eb859d7..8b399fc 100644
--- a/doc/Backslash.3
+++ b/doc/Backslash.3
@@ -17,35 +17,31 @@ Tcl_Backslash \- parse a backslash sequence
 char
 \fBTcl_Backslash\fR(\fIsrc, countPtr\fR)
 .SH ARGUMENTS
-.AS char *countPtr
+.AS char *countPtr out
 .AP char *src in
 Pointer to a string starting with a backslash.
 .AP int *countPtr out
-If \fIcountPtr\fR isn't NULL, \fI*countPtr\fR gets filled
+If \fIcountPtr\fR is not NULL, \fI*countPtr\fR gets filled
 in with number of characters in the backslash sequence, including
 the backslash character.
 .BE
 
 .SH DESCRIPTION
 .PP
-.VS 8.1
 The use of \fBTcl_Backslash\fR is deprecated in favor of
 \fBTcl_UtfBackslash\fR.
 .PP
 This is a utility procedure provided for backwards compatibility with
 non-internationalized Tcl extensions.  It parses a backslash sequence and
 returns the low byte of the Unicode character corresponding to the sequence. 
-.VE
 \fBTcl_Backslash\fR modifies \fI*countPtr\fR to contain the number of
 characters in the backslash sequence.
 .PP
 See the Tcl manual entry for information on the valid backslash sequences.
 All of the sequences described in the Tcl manual entry are supported by
 \fBTcl_Backslash\fR.
-.VS 8.1 br
 .SH "SEE ALSO"
 Tcl(n), Tcl_UtfBackslash(3)
-.VE
 
 .SH KEYWORDS
 backslash, parse
diff --git a/doc/BoolObj.3 b/doc/BoolObj.3
index 2814e4e..395d159 100644
--- a/doc/BoolObj.3
+++ b/doc/BoolObj.3
@@ -1,14 +1,15 @@
 '\"
 '\" Copyright (c) 1996-1997 Sun Microsystems, Inc.
+'\" Contributions from Don Porter, NIST, 2005.  (not subject to US copyright)
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH Tcl_BooleanObj 3 8.0 Tcl "Tcl Library Procedures"
+.TH Tcl_BooleanObj 3 8.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_NewBooleanObj, Tcl_SetBooleanObj, Tcl_GetBooleanFromObj \- manipulate Tcl objects as boolean values
+Tcl_NewBooleanObj, Tcl_SetBooleanObj, Tcl_GetBooleanFromObj \- store/retrieve boolean value in a Tcl_Obj
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -21,20 +22,14 @@ Tcl_Obj *
 int
 \fBTcl_GetBooleanFromObj\fR(\fIinterp, objPtr, boolPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *interp
+.AS Tcl_Interp boolValue in/out
 .AP int boolValue in
-Integer value used to initialize or set a boolean object.
-If the integer is nonzero, the boolean object is set to 1;
-otherwise the boolean object is set to 0.
+Integer value to be stored as a boolean value in a Tcl_Obj.
 .AP Tcl_Obj *objPtr in/out
-For \fBTcl_SetBooleanObj\fR, this points to the object to be converted
-to boolean type.
-For \fBTcl_GetBooleanFromObj\fR, this refers to the object
-from which to get a boolean value; 
-if \fIobjPtr\fR does not already point to a boolean object,
-an attempt will be made to convert it to one.
+Points to the Tcl_Obj in which to store, or from which to
+retrieve a boolean value.
 .AP Tcl_Interp *interp in/out
-If an error occurs during conversion,
+If a boolean value cannot be retrieved,
 an error message is left in the interpreter's result object
 unless \fIinterp\fR is NULL.
 .AP int *boolPtr out
@@ -44,44 +39,57 @@ stores the boolean value (0 or 1) obtained from \fIobjPtr\fR.
 
 .SH DESCRIPTION
 .PP
-These procedures are used to create, modify, and read
-boolean Tcl objects from C code.
-\fBTcl_NewBooleanObj\fR and \fBTcl_SetBooleanObj\fR
-will create a new object of boolean type
-or modify an existing object to have boolean type. 
-Both of these procedures set the object to have the
-boolean value (0 or 1) specified by \fIboolValue\fR;
-if \fIboolValue\fR is nonzero, the object is set to 1,
-otherwise to 0.
-\fBTcl_NewBooleanObj\fR returns a pointer to a newly created object
-with reference count zero.
-Both procedures set the object's type to be boolean
-and assign the boolean value to the object's internal representation
-\fIlongValue\fR member.
-\fBTcl_SetBooleanObj\fR invalidates any old string representation
-and, if the object is not already a boolean object,
-frees any old internal representation.
+These procedures are used to pass boolean values to and from
+Tcl as Tcl_Obj's.  When storing a boolean value into a Tcl_Obj,
+any non-zero integer value in \fIboolValue\fR is taken to be
+the boolean value \fB1\fR, and the integer value \fB0\fR is
+taken to be the boolean value \fB0\fR.
 .PP
-\fBTcl_GetBooleanFromObj\fR attempts to return a boolean value
-from the Tcl object \fIobjPtr\fR.
-If the object is not already a boolean object,
-it will attempt to convert it to one.
-If an error occurs during conversion, it returns \fBTCL_ERROR\fR
-and leaves an error message in the interpreter's result object
-unless \fIinterp\fR is NULL.
-Otherwise, \fBTcl_GetBooleanFromObj\fR returns \fBTCL_OK\fR
-and stores the boolean value in the address given by \fIboolPtr\fR.
-If the object is not already a boolean object,
-the conversion will free any old internal representation.
-Objects having a string representation equal to any of \fB0\fR,
-\fBfalse\fR, \fBno\fR, or \fBoff\fR have a boolean value 0; if the
-string representation is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or
-\fBon\fR the boolean value is 1.
-Any of these string values may be abbreviated, and upper-case spellings
-are also acceptable.
+\fBTcl_NewBooleanObj\fR creates a new Tcl_Obj, stores the boolean
+value \fIboolValue\fR in it, and returns a pointer to the new Tcl_Obj.
+The new Tcl_Obj has reference count of zero.
+.PP
+\fBTcl_SetBooleanObj\fR accepts \fIobjPtr\fR, a pointer to
+an existing Tcl_Obj, and stores in the Tcl_Obj \fI*objPtr\fR 
+the boolean value \fIboolValue\fR.  This is a write operation
+on \fI*objPtr\fR, so \fIobjPtr\fR must be unshared.  Attempts to
+write to a shared Tcl_Obj will panic.  A successful write
+of \fIboolValue\fR into \fI*objPtr\fR implies the freeing of
+any former value stored in \fI*objPtr\fR.
+.PP
+\fBTcl_GetBooleanFromObj\fR attempts to retrieve a boolean value
+from the value stored in \fI*objPtr\fR.
+If \fIobjPtr\fR holds a string value recognized by \fBTcl_GetBoolean\fR,
+then the recognized boolean value is written at the address given
+by \fIboolPtr\fR.  
+If \fIobjPtr\fR holds any value recognized as
+a number by Tcl, then if that value is zero a 0 is written at
+the address given by \fIboolPtr\fR and if that
+value is non-zero a 1 is written at the address given by \fIboolPtr\fR.
+In all cases where a value is written at the address given
+by \fIboolPtr\fR, \fBTcl_GetBooleanFromObj\fR returns \fBTCL_OK\fR.
+If the value of \fIobjPtr\fR does not meet any of the conditions
+above, then \fBTCL_ERROR\fR is returned and an error message is 
+left in the interpreter's result unless \fIinterp\fR is NULL.
+\fBTcl_GetBooleanFromObj\fR may also make changes to the internal
+fields of \fI*objPtr\fR so that future calls to 
+\fBTcl_GetBooleanFromObj\fR on the same \fIobjPtr\fR can be
+performed more efficiently.
+.PP
+Note that the routines \fBTcl_GetBooleanFromObj\fR and
+\fBTcl_GetBoolean\fR are not functional equivalents.
+The set of values for which \fBTcl_GetBooleanFromObj\fR
+will return \fBTCL_OK\fR is strictly larger than
+the set of values for which \fBTcl_GetBoolean\fR will do the same.
+For example, the value
+.QW 5
+passed to \fBTcl_GetBooleanFromObj\fR
+will lead to a \fBTCL_OK\fR return (and the boolean value 1),
+while the same value passed to \fBTcl_GetBoolean\fR will lead to
+a \fBTCL_ERROR\fR return.
 
 .SH "SEE ALSO"
-Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult
+Tcl_NewObj, Tcl_IsShared, Tcl_GetBoolean
 
 .SH KEYWORDS
-boolean, boolean object, boolean type, internal representation, object, object type, string representation
+boolean, object
diff --git a/doc/ByteArrObj.3 b/doc/ByteArrObj.3
index 51c4363..738da32 100644
--- a/doc/ByteArrObj.3
+++ b/doc/ByteArrObj.3
@@ -25,8 +25,8 @@ unsigned char *
 unsigned char *
 \fBTcl_SetByteArrayLength\fR(\fIobjPtr, length\fR)
 .SH ARGUMENTS
-.AS "unsigned char" *lengthPtr in/out
-.AP "CONST unsigned char" *bytes in
+.AS "const unsigned char" *lengthPtr in/out
+.AP "const unsigned char" *bytes in
 The array of bytes used to initialize or set a byte-array object.
 .AP int length in
 The length of the array of bytes.  It must be >= 0.
@@ -48,7 +48,7 @@ results of binary IO operations or data structures created with the
 \fBbinary\fR command.  In Tcl, an array of bytes is not equivalent to a
 string.  Conceptually, a string is an array of Unicode characters, while a
 byte-array is an array of 8-bit quantities with no implicit meaning.
-Accesser functions are provided to get the string representation of a
+Accessor functions are provided to get the string representation of a
 byte-array or to convert an arbitrary object to a byte-array.  Obtaining the
 string representation of a byte-array object (by calling
 \fBTcl_GetStringFromObj\fR) produces a properly formed UTF-8 sequence with a
diff --git a/doc/CallDel.3 b/doc/CallDel.3
index 02bb445..8e6445b 100644
--- a/doc/CallDel.3
+++ b/doc/CallDel.3
@@ -38,8 +38,8 @@ time of the call.
 type \fBTcl_InterpDeleteProc\fR:
 .CS
 typedef void Tcl_InterpDeleteProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR);
 .CE
 The \fIclientData\fR and \fIinterp\fR parameters are
 copies of the \fIclientData\fR and \fIinterp\fR arguments given
@@ -51,7 +51,7 @@ interpreter is about to go away.
 .PP
 \fBTcl_DontCallWhenDeleted\fR cancels a previous call to
 \fBTcl_CallWhenDeleted\fR with the same arguments, so that
-\fIproc\fR won't be called after all when \fIinterp\fR is
+\fIproc\fR will not be called after all when \fIinterp\fR is
 deleted.
 If there is no deletion callback that matches \fIinterp\fR,
 \fIproc\fR, and \fIclientData\fR then the call to
diff --git a/doc/ChnlStack.3 b/doc/ChnlStack.3
index ebd8d63..8ac5a0d 100644
--- a/doc/ChnlStack.3
+++ b/doc/ChnlStack.3
@@ -8,7 +8,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-Tcl_StackChannel, Tcl_UnstackChannel, Tcl_GetStackedChannel, Tcl_GetTopChannel \- stack an I/O channel on top of another, and undo it
+Tcl_StackChannel, Tcl_UnstackChannel, Tcl_GetStackedChannel, Tcl_GetTopChannel \- manipulate stacked I/O channels
 .SH SYNOPSIS
 .nf
 .nf
@@ -27,17 +27,17 @@ Tcl_Channel
 \fBTcl_GetTopChannel\fR(\fIchannel\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_ChannelType
+.AS Tcl_ChannelType clientData
 .AP Tcl_Interp *interp in
 Interpreter for error reporting.
 .AP Tcl_ChannelType *typePtr in
-The new channel I/O procedures to use for \fIchannel\fP.
+The new channel I/O procedures to use for \fIchannel\fR.
 .AP ClientData clientData in
 Arbitrary one-word value to pass to channel I/O procedures.
 .AP int mask in
 Conditions under which \fIchannel\fR will be used: OR-ed combination of
 \fBTCL_READABLE\fR, \fBTCL_WRITABLE\fR and \fBTCL_EXCEPTION\fR.
-This can be a subset of the operations currently allowed on \fIchannel\fP.
+This can be a subset of the operations currently allowed on \fIchannel\fR.
 .AP Tcl_Channel channel in
 An existing Tcl channel such as returned by \fBTcl_CreateChannel\fR.
 .BE
@@ -55,9 +55,9 @@ stacked channels.  Anyone using stacked channels or creating stacked
 channel drivers should update to the new \fBTCL_CHANNEL_VERSION_2\fR
 \fBTcl_ChannelType\fR structure.  See \fBTcl_CreateChannel\fR for details.
 .PP
-\fBTcl_StackChannel\fR stacks a new \fIchannel\fP on an existing channel
-with the same name that was registered for \fIchannel\fP by
-\fBTcl_RegisterChannel\fP.
+\fBTcl_StackChannel\fR stacks a new \fIchannel\fR on an existing channel
+with the same name that was registered for \fIchannel\fR by
+\fBTcl_RegisterChannel\fR.
 .PP
 \fBTcl_StackChannel\fR works by creating a new channel structure and
 placing itself on top of the channel stack.  EOL translation, encoding and
@@ -68,7 +68,7 @@ remain at the top of the channel stack.  A pointer to the new top channel
 structure is returned.  If an error occurs when stacking the channel, NULL
 is returned instead.
 .PP
-The \fImask\fP parameter specifies the operations that are allowed on the
+The \fImask\fR parameter specifies the operations that are allowed on the
 new channel.  These can be a subset of the operations allowed on the
 original channel.  For example, a read-write channel may become read-only
 after the \fBTcl_StackChannel\fR call.
@@ -77,10 +77,10 @@ Closing a channel closes the channels stacked below it.  The close of
 stacked channels is executed in a way that allows buffered data to be
 properly flushed.
 .PP
-\fBTcl_UnstackChannel\fP reverses the process.  The old channel is
+\fBTcl_UnstackChannel\fR reverses the process.  The old channel is
 associated with the channel name, and the processing module added by
 \fBTcl_StackChannel\fR is destroyed.  If there is no old channel, then
-\fBTcl_UnstackChannel\fP is equivalent to \fBTcl_Close\fP.  If an error
+\fBTcl_UnstackChannel\fR is equivalent to \fBTcl_Close\fR.  If an error
 occurs unstacking the channel, \fBTCL_ERROR\fR is returned, otherwise
 \fBTCL_OK\fR is returned.
 .PP
diff --git a/doc/CmdCmplt.3 b/doc/CmdCmplt.3
index e2a7064..eeae039 100644
--- a/doc/CmdCmplt.3
+++ b/doc/CmdCmplt.3
@@ -17,8 +17,8 @@ Tcl_CommandComplete \- Check for unmatched braces in a Tcl command
 int
 \fBTcl_CommandComplete\fR(\fIcmd\fR)
 .SH ARGUMENTS
-.AS "CONST char" *cmd
-.AP "CONST char" *cmd in
+.AS "const char" *cmd
+.AP "const char" *cmd in
 Command string to test for completeness.
 .BE
 
diff --git a/doc/Concat.3 b/doc/Concat.3
index fdb479e..c38bf82 100644
--- a/doc/Concat.3
+++ b/doc/Concat.3
@@ -14,12 +14,13 @@ Tcl_Concat \- concatenate a collection of strings
 .nf
 \fB#include <tcl.h>\fR
 .sp
-CONST char *
+const char *
 \fBTcl_Concat\fR(\fIargc, argv\fR)
 .SH ARGUMENTS
+.AS "const char *const" argv[]
 .AP int argc in
 Number of strings.
-.AP "CONST char * CONST" argv[] in
+.AP "const char *const" argv[] in
 Array of strings to concatenate.  Must have \fIargc\fR entries.
 .BE
 
@@ -41,12 +42,9 @@ copies strings from \fBargv\fR to the result.  If an element of
 is ignored entirely.  This white-space removal was added to make
 the output of the \fBconcat\fR command cleaner-looking.
 .PP
-.VS
 The result string is dynamically allocated
 using \fBTcl_Alloc\fR;  the caller must eventually release the space
 by calling \fBTcl_Free\fR.
-.VE
-.VS
 .SH "SEE ALSO"
 Tcl_ConcatObj
 .SH KEYWORDS
diff --git a/doc/CrtChannel.3 b/doc/CrtChannel.3
index fc034a0..212a239 100644
--- a/doc/CrtChannel.3
+++ b/doc/CrtChannel.3
@@ -9,7 +9,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-Tcl_CreateChannel, Tcl_GetChannelInstanceData, Tcl_GetChannelType, Tcl_GetChannelName, Tcl_GetChannelHandle, Tcl_GetChannelMode, Tcl_GetChannelBufferSize, Tcl_SetChannelBufferSize, Tcl_NotifyChannel, Tcl_BadChannelOption, Tcl_ChannelName, Tcl_ChannelVersion, Tcl_ChannelBlockModeProc, Tcl_ChannelCloseProc, Tcl_ChannelClose2Proc, Tcl_ChannelInputProc, Tcl_ChannelOutputProc, Tcl_ChannelSeekProc, Tcl_ChannelWideSeekProc, Tcl_ChannelSetOptionProc, Tcl_ChannelGetOptionProc, Tcl_ChannelWatchProc, Tcl_ChannelGetHandleProc, Tcl_ChannelFlushProc, Tcl_ChannelHandlerProc, Tcl_ChannelThreadActionProc, Tcl_IsChannelShared, Tcl_IsChannelRegistered, Tcl_CutChannel, Tcl_SpliceChannel, Tcl_IsChannelExisting, Tcl_ClearChannelHandlers, Tcl_GetChannelThread, Tcl_ChannelBuffered \- procedures for creating and manipulating channels
+Tcl_CreateChannel, Tcl_GetChannelInstanceData, Tcl_GetChannelType, Tcl_GetChannelName, Tcl_GetChannelHandle, Tcl_GetChannelMode, Tcl_GetChannelBufferSize, Tcl_SetChannelBufferSize, Tcl_NotifyChannel, Tcl_BadChannelOption, Tcl_ChannelName, Tcl_ChannelVersion, Tcl_ChannelBlockModeProc, Tcl_ChannelCloseProc, Tcl_ChannelClose2Proc, Tcl_ChannelInputProc, Tcl_ChannelOutputProc, Tcl_ChannelSeekProc, Tcl_ChannelWideSeekProc, Tcl_ChannelTruncateProc, Tcl_ChannelSetOptionProc, Tcl_ChannelGetOptionProc, Tcl_ChannelWatchProc, Tcl_ChannelGetHandleProc, Tcl_ChannelFlushProc, Tcl_ChannelHandlerProc, Tcl_ChannelThreadActionProc, Tcl_IsChannelShared, Tcl_IsChannelRegistered, Tcl_CutChannel, Tcl_SpliceChannel, Tcl_IsChannelExisting, Tcl_ClearChannelHandlers, Tcl_GetChannelThread, Tcl_ChannelBuffered \- procedures for creating and manipulating channels
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -23,16 +23,14 @@ ClientData
 Tcl_ChannelType *
 \fBTcl_GetChannelType\fR(\fIchannel\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_GetChannelName\fR(\fIchannel\fR)
 .sp
 int
 \fBTcl_GetChannelHandle\fR(\fIchannel, direction, handlePtr\fR)
 .sp
-.VS 8.4
 Tcl_ThreadId
 \fBTcl_GetChannelThread\fR(\fIchannel\fR)
-.VE 8.4
 .sp
 int
 \fBTcl_GetChannelMode\fR(\fIchannel\fR)
@@ -46,7 +44,6 @@ int
 .sp
 int
 \fBTcl_BadChannelOption\fR(\fIinterp, optionName, optionList\fR)
-.VS 8.4
 .sp
 int
 \fBTcl_IsChannelShared\fR(\fIchannel\fR)
@@ -65,12 +62,11 @@ void
 .sp
 void
 \fBTcl_ClearChannelHandlers\fR(\fIchannel\fR)
-.VE 8.4
 .sp
 int
 \fBTcl_ChannelBuffered\fR(\fIchannel\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_ChannelName\fR(\fItypePtr\fR)
 .sp
 Tcl_ChannelTypeVersion
@@ -94,13 +90,16 @@ Tcl_DriverOutputProc *
 Tcl_DriverSeekProc *
 \fBTcl_ChannelSeekProc\fR(\fItypePtr\fR)
 .sp
-.VS 8.4
 Tcl_DriverWideSeekProc *
 \fBTcl_ChannelWideSeekProc\fR(\fItypePtr\fR)
 .sp
 Tcl_DriverThreadActionProc *
 \fBTcl_ChannelThreadActionProc\fR(\fItypePtr\fR)
-.VE 8.4
+.sp
+.VS 8.5
+Tcl_DriverTruncateProc *
+\fBTcl_ChannelTruncateProc\fR(\fItypePtr\fR)
+.VE 8.5
 .sp
 Tcl_DriverSetOptionProc *
 \fBTcl_ChannelSetOptionProc\fR(\fItypePtr\fR)
@@ -121,11 +120,11 @@ Tcl_DriverHandlerProc *
 \fBTcl_ChannelHandlerProc\fR(\fItypePtr\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_ChannelType *channelName in
-.AP Tcl_ChannelType *typePtr in
+.AS "const Tcl_ChannelType" *channelName
+.AP "const Tcl_ChannelType" *typePtr in
 Points to a structure containing the addresses of procedures that
 can be called to perform I/O and other functions on the channel.
-.AP "CONST char" *channelName in
+.AP "const char" *channelName in
 The name of this channel, such as \fBfile3\fR; must not be in use
 by any other channel. Can be NULL, in which case the channel is
 created without a name.
@@ -151,10 +150,11 @@ and \fBTCL_EXCEPTION\fR that indicates events that have occurred on
 this channel.
 .AP Tcl_Interp *interp in
 Current interpreter. (can be NULL)
-.AP "CONST char" *optionName in
+.AP "const char" *optionName in
 Name of the invalid option.
-.AP "CONST char" *optionList in
-Specific options list (space separated words, without "-") 
+.AP "const char" *optionList in
+Specific options list (space separated words, without
+.QW \- )
 to append to the standard generic options list.
 Can be NULL for generic options error message only.
 
@@ -178,7 +178,7 @@ driver provides a \fBTcl_ChannelType\fR structure containing pointers to
 functions implementing the various operations used by the generic layer to
 communicate with the channel driver. The \fBTcl_ChannelType\fR structure
 and the functions referenced by it are described in the section
-TCL_CHANNELTYPE, below.
+\fBTCL_CHANNELTYPE\fR, below.
 .PP
 Second, channel drivers usually provide a Tcl command to create
 instances of that type of channel. For example, the Tcl \fBopen\fR
@@ -205,7 +205,7 @@ structure to perform operations on the channel.
 \fItypePtr\fR and \fIinstanceData\fR with it. The channel is opened in the
 mode indicated by \fImask\fR.
 For a discussion of channel drivers, their operations and the
-\fBTcl_ChannelType\fR structure, see the section TCL_CHANNELTYPE, below.
+\fBTcl_ChannelType\fR structure, see the section \fBTCL_CHANNELTYPE\fR, below.
 .PP
 \fBTcl_CreateChannel\fR interacts with the code managing the standard
 channels. Once a standard channel was initialized either through a
@@ -237,11 +237,9 @@ then \fBTCL_ERROR\fR is returned instead.  Different channel drivers
 will return different types of handle.  Refer to the manual entries
 for each driver to determine what type of handle is returned.
 .PP
-.VS 8.4
 \fBTcl_GetChannelThread\fR returns the id of the thread currently managing
 the specified \fIchannel\fR. This allows channel drivers to send their file
 events to the correct event queue even for a multi-threaded core.
-.VE 8.4
 .PP
 \fBTcl_GetChannelMode\fR returns an OR-ed combination of \fBTCL_READABLE\fR
 and \fBTCL_WRITABLE\fR, indicating whether the channel is open for input
@@ -265,15 +263,15 @@ occurred on the channel.  Channel drivers are responsible for invoking
 this function whenever the channel handlers need to be called for the
 channel.  See \fBWATCHPROC\fR below for more details.
 .PP
-\fBTcl_BadChannelOption\fR is called from driver specific set or get option
-procs to generate a complete error message.
+\fBTcl_BadChannelOption\fR is called from driver specific
+\fIsetOptionProc\fR or \fIgetOptionProc\fR to generate a complete
+error message.
 .PP
 \fBTcl_ChannelBuffered\fR returns the number of bytes of input
 currently buffered in the internal buffer (push back area) of the
 channel itself. It does not report about the data in the overall
 buffers for the stack of channels the supplied channel is part of.
 .PP
-.VS 8.4
 \fBTcl_IsChannelShared\fR checks the refcount of the specified
 \fIchannel\fR and returns whether the \fIchannel\fR was shared among
 multiple interpreters (result == 1) or not (result == 0).
@@ -290,26 +288,24 @@ name is registered in the (thread)-global list of all channels (result
 (thread)global list of all channels (of the current thread).
 Application to a channel still registered in some interpreter
 is not allowed.
-.VS 8.4
+.VS 8.5
 Also notifies the driver if the \fBTcl_ChannelType\fR version is
 \fBTCL_CHANNEL_VERSION_4\fR (or higher), and
 \fBTcl_DriverThreadActionProc\fR is defined for it.
-.VE 8.4
+.VE 8.5
 .PP
 \fBTcl_SpliceChannel\fR adds the specified \fIchannel\fR to the
 (thread)global list of all channels (of the current thread).
 Application to a channel registered in some interpreter is not allowed.
-.VS 8.4
+.VS 8.5
 Also notifies the driver if the \fBTcl_ChannelType\fR version is
 \fBTCL_CHANNEL_VERSION_4\fR (or higher), and
 \fBTcl_DriverThreadActionProc\fR is defined for it.
-.VE 8.4
+.VE 8.5
 .PP
-\fBTcl_ClearChannelHandlers\fR removes all channelhandlers and event
+\fBTcl_ClearChannelHandlers\fR removes all channel handlers and event
 scripts associated with the specified \fIchannel\fR, thus shutting
 down all event processing for this channel.
-.VE 8.4
-
 .SH TCL_CHANNELTYPE
 .PP
 A channel driver provides a \fBTcl_ChannelType\fR structure that contains
@@ -322,22 +318,25 @@ details about the old structure.
 The \fBTcl_ChannelType\fR structure contains the following fields:
 .CS
 typedef struct Tcl_ChannelType {
-	char *\fItypeName\fR;
-	Tcl_ChannelTypeVersion \fIversion\fR;
-	Tcl_DriverCloseProc *\fIcloseProc\fR;
-	Tcl_DriverInputProc *\fIinputProc\fR;
-	Tcl_DriverOutputProc *\fIoutputProc\fR;
-	Tcl_DriverSeekProc *\fIseekProc\fR;
-	Tcl_DriverSetOptionProc *\fIsetOptionProc\fR;
-	Tcl_DriverGetOptionProc *\fIgetOptionProc\fR;
-	Tcl_DriverWatchProc *\fIwatchProc\fR;
-	Tcl_DriverGetHandleProc *\fIgetHandleProc\fR;
-	Tcl_DriverClose2Proc *\fIclose2Proc\fR;
-	Tcl_DriverBlockModeProc *\fIblockModeProc\fR;	
-	Tcl_DriverFlushProc *\fIflushProc\fR;	
-	Tcl_DriverHandlerProc *\fIhandlerProc\fR;	
-	Tcl_DriverWideSeekProc *\fIwideSeekProc\fR;
-	Tcl_DriverThreadActionProc *\fIthreadActionProc\fR;
+        char *\fItypeName\fR;
+        Tcl_ChannelTypeVersion \fIversion\fR;
+        Tcl_DriverCloseProc *\fIcloseProc\fR;
+        Tcl_DriverInputProc *\fIinputProc\fR;
+        Tcl_DriverOutputProc *\fIoutputProc\fR;
+        Tcl_DriverSeekProc *\fIseekProc\fR;
+        Tcl_DriverSetOptionProc *\fIsetOptionProc\fR;
+        Tcl_DriverGetOptionProc *\fIgetOptionProc\fR;
+        Tcl_DriverWatchProc *\fIwatchProc\fR;
+        Tcl_DriverGetHandleProc *\fIgetHandleProc\fR;
+        Tcl_DriverClose2Proc *\fIclose2Proc\fR;
+        Tcl_DriverBlockModeProc *\fIblockModeProc\fR;
+        Tcl_DriverFlushProc *\fIflushProc\fR;
+        Tcl_DriverHandlerProc *\fIhandlerProc\fR;
+        Tcl_DriverWideSeekProc *\fIwideSeekProc\fR;
+        Tcl_DriverThreadActionProc *\fIthreadActionProc\fR;
+.VS 8.5
+        Tcl_DriverTruncateProc *\fItruncateProc\fR;
+.VE 8.5
 } Tcl_ChannelType;
 .CE
 .PP
@@ -345,11 +344,11 @@ It is not necessary to provide implementations for all channel
 operations.  Those which are not necessary may be set to NULL in the
 struct: \fIblockModeProc\fR, \fIseekProc\fR, \fIsetOptionProc\fR,
 \fIgetOptionProc\fR, and \fIclose2Proc\fR, in addition to
-\fIflushProc\fR, \fIhandlerProc\fR, and \fIthreadActionProc\fR.  Other
-functions that cannot be implemented in a meaningful way should return
-\fBEINVAL\fR when called, to indicate that the operations they
-represent are not available. Also note that \fIwideSeekProc\fR can be
-NULL if \fIseekProc\fR is.
+\fIflushProc\fR, \fIhandlerProc\fR, \fIthreadActionProc\fR, and
+\fItruncateProc\fR.  Other functions that cannot be implemented in a
+meaningful way should return \fBEINVAL\fR when called, to indicate
+that the operations they represent are not available. Also note that
+\fIwideSeekProc\fR can be NULL if \fIseekProc\fR is.
 .PP
 The user should only use the above structure for \fBTcl_ChannelType\fR
 instantiation.  When referencing fields in a \fBTcl_ChannelType\fR
@@ -358,20 +357,19 @@ structure, the following functions should be used to obtain the values:
 \fBTcl_ChannelBlockModeProc\fR, \fBTcl_ChannelCloseProc\fR,
 \fBTcl_ChannelClose2Proc\fR, \fBTcl_ChannelInputProc\fR,
 \fBTcl_ChannelOutputProc\fR, \fBTcl_ChannelSeekProc\fR,
-.VS 8.4
-\fBTcl_ChannelWideSeekProc\fR,
-\fBTcl_ChannelThreadActionProc\fR,
-.VE 8.4
+\fBTcl_ChannelWideSeekProc\fR, \fBTcl_ChannelThreadActionProc\fR,
+.VS 8.5
+\fBTcl_ChannelTruncateProc\fR,
+.VE 8.5
 \fBTcl_ChannelSetOptionProc\fR, \fBTcl_ChannelGetOptionProc\fR,
 \fBTcl_ChannelWatchProc\fR, \fBTcl_ChannelGetHandleProc\fR,
 \fBTcl_ChannelFlushProc\fR, or \fBTcl_ChannelHandlerProc\fR.
 .PP
 The change to the structures was made in such a way that standard channel
 types are binary compatible.  However, channel types that use stacked
-channels (ie: TLS, Trf) have new versions to correspond to the above change
+channels (i.e. TLS, Trf) have new versions to correspond to the above change
 since the previous code for stacked channels had problems.
-
-.SH TYPENAME
+.SS TYPENAME
 .PP
 The \fItypeName\fR field contains a null-terminated string that
 identifies the type of the device implemented by this driver, e.g.
@@ -379,19 +377,19 @@ identifies the type of the device implemented by this driver, e.g.
 .PP
 This value can be retrieved with \fBTcl_ChannelName\fR, which returns
 a pointer to the string.
-
-.SH VERSION
+.SS VERSION
 .PP
 
 The \fIversion\fR field should be set to the version of the structure
 that you require. \fBTCL_CHANNEL_VERSION_2\fR is the minimum recommended.
-.VS 8.4
-\fBTCL_CHANNEL_VERSION_3\fR must be set to specifiy the \fIwideSeekProc\fR member.
-.VE 8.4
-.VS 8.4
-\fBTCL_CHANNEL_VERSION_4\fR must be set to specifiy the
-\fIthreadActionProc\fR member (includes \fIwideSeekProc\fR).
-.VE 8.4
+\fBTCL_CHANNEL_VERSION_3\fR must be set to specify the \fIwideSeekProc\fR member.
+\fBTCL_CHANNEL_VERSION_4\fR must be set to specify the \fIthreadActionProc\fR member
+(includes \fIwideSeekProc\fR).
+.VS 8.5
+\fBTCL_CHANNEL_VERSION_5\fR must be set to specify the
+\fItruncateProc\fR members (includes
+\fIwideSeekProc\fR and \fIthreadActionProc\fR).
+.VE 8.5
 If it is not set to any of these, then this
 \fBTcl_ChannelType\fR is assumed to have the original structure.  See
 \fBOLD CHANNEL TYPES\fR for more details.  While Tcl will recognize
@@ -399,12 +397,14 @@ and function with either structures, stacked channels must be of at
 least \fBTCL_CHANNEL_VERSION_2\fR to function correctly.
 .PP
 This value can be retrieved with \fBTcl_ChannelVersion\fR, which returns
-.VS 8.4
-one of \fBTCL_CHANNEL_VERSION_4\fR, \fBTCL_CHANNEL_VERSION_3\fR,
-.VE 8.4
-\fBTCL_CHANNEL_VERSION_2\fR, or \fBTCL_CHANNEL_VERSION_1\fR.
-
-.SH BLOCKMODEPROC
+one of
+.VS 8.5
+\fBTCL_CHANNEL_VERSION_5\fR,
+.VE 8.5
+\fBTCL_CHANNEL_VERSION_4\fR,
+\fBTCL_CHANNEL_VERSION_3\fR,
+\fBTCL_CHANNEL_VERSION_2\fR or \fBTCL_CHANNEL_VERSION_1\fR.
+.SS BLOCKMODEPROC
 .PP
 The \fIblockModeProc\fR field contains the address of a function called by
 the generic layer to set blocking and nonblocking mode on the device.
@@ -412,8 +412,8 @@ the generic layer to set blocking and nonblocking mode on the device.
 .PP
 .CS
 typedef int Tcl_DriverBlockModeProc(
-	ClientData \fIinstanceData\fR,
-	int \fImode\fR);
+        ClientData \fIinstanceData\fR,
+        int \fImode\fR);
 .CE
 .PP
 The \fIinstanceData\fR is the same as the value passed to
@@ -437,11 +437,9 @@ A channel driver \fBnot\fR supplying a \fIblockModeProc\fR has to be
 very, very careful. It has to tell the generic layer exactly which
 blocking mode is acceptable to it, and should this also document for
 the user so that the blocking mode of the channel is not changed to an
-inacceptable value. Any confusion here may lead the interpreter into a
+unacceptable value. Any confusion here may lead the interpreter into a
 (spurious and difficult to find) deadlock.
-
-
-.SH "CLOSEPROC AND CLOSE2PROC"
+.SS "CLOSEPROC AND CLOSE2PROC"
 .PP
 The \fIcloseProc\fR field contains the address of a function called by the
 generic layer to clean up driver-related information when the channel is
@@ -449,8 +447,8 @@ closed. \fICloseProc\fR must match the following prototype:
 .PP
 .CS
 typedef int Tcl_DriverCloseProc(
-	ClientData \fIinstanceData\fR,
-	Tcl_Interp *\fIinterp\fR);
+        ClientData \fIinstanceData\fR,
+        Tcl_Interp *\fIinterp\fR);
 .CE
 .PP
 The \fIinstanceData\fR argument is the same as the value provided to
@@ -471,9 +469,9 @@ following prototype:
 .PP
 .CS
 typedef int Tcl_DriverClose2Proc(
-	ClientData \fIinstanceData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	int \fIflags\fR);
+        ClientData \fIinstanceData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        int \fIflags\fR);
 .CE
 .PP
 The \fIclose2Proc\fR will be called with \fIflags\fR set to an OR'ed
@@ -491,11 +489,10 @@ return a nonzero POSIX error code. In addition, if an error occurs and
 \fIinterp\fR is not NULL, the procedure should store an error message
 in the interpreter's result.
 .PP
-These value can be retrieved with \fBTcl_ChannelCloseProc\fR or
-\fBTcl_ChannelClose2Proc\fR, which returns a pointer to the respective
-function.
-
-.SH INPUTPROC
+The \fIcloseProc\fR and \fIclose2Proc\fR values can be retrieved with
+\fBTcl_ChannelCloseProc\fR or \fBTcl_ChannelClose2Proc\fR, which
+return a pointer to the respective function.
+.SS INPUTPROC
 .PP
 The \fIinputProc\fR field contains the address of a function called by the
 generic layer to read data from the file or device and store it in an
@@ -503,10 +500,10 @@ internal buffer. \fIInputProc\fR must match the following prototype:
 .PP
 .CS
 typedef int Tcl_DriverInputProc(
-	ClientData \fIinstanceData\fR,
-	char *\fIbuf\fR,
-	int \fIbufSize\fR,
-	int *\fIerrorCodePtr\fR);
+        ClientData \fIinstanceData\fR,
+        char *\fIbuf\fR,
+        int \fIbufSize\fR,
+        int *\fIerrorCodePtr\fR);
 .CE
 .PP
 \fIInstanceData\fR is the same as the value passed to
@@ -539,8 +536,7 @@ blocking.
 .PP
 This value can be retrieved with \fBTcl_ChannelInputProc\fR, which returns
 a pointer to the function.
-
-.SH OUTPUTPROC
+.SS OUTPUTPROC
 .PP
 The \fIoutputProc\fR field contains the address of a function called by the
 generic layer to transfer data from an internal buffer to the output device.
@@ -548,10 +544,10 @@ generic layer to transfer data from an internal buffer to the output device.
 .PP
 .CS
 typedef int Tcl_DriverOutputProc(
-	ClientData \fIinstanceData\fR,
-	CONST char *\fIbuf\fR,
-	int \fItoWrite\fR,
-	int *\fIerrorCodePtr\fR);
+        ClientData \fIinstanceData\fR,
+        const char *\fIbuf\fR,
+        int \fItoWrite\fR,
+        int *\fIerrorCodePtr\fR);
 .CE
 .PP
 \fIInstanceData\fR is the same as the value passed to
@@ -578,8 +574,7 @@ without writing any data.
 .PP
 This value can be retrieved with \fBTcl_ChannelOutputProc\fR, which returns
 a pointer to the function.
-
-.SH "SEEKPROC AND WIDESEEKPROC"
+.SS "SEEKPROC AND WIDESEEKPROC"
 .PP
 The \fIseekProc\fR field contains the address of a function called by the
 generic layer to move the access point at which subsequent input or output
@@ -588,10 +583,10 @@ prototype:
 .PP
 .CS
 typedef int Tcl_DriverSeekProc(
-	ClientData \fIinstanceData\fR,
-	long \fIoffset\fR,
-	int \fIseekMode\fR,
-	int *\fIerrorCodePtr\fR);
+        ClientData \fIinstanceData\fR,
+        long \fIoffset\fR,
+        int \fIseekMode\fR,
+        int *\fIerrorCodePtr\fR);
 .CE
 .PP
 The \fIinstanceData\fR argument is the same as the value given to
@@ -608,7 +603,6 @@ does not implement seeking.
 The return value is the new access point or -1 in case of error. If an
 error occurred, the function should not move the access point.
 .PP
-.VS 8.4
 If there is a non-NULL \fIseekProc\fR field, the \fIwideSeekProc\fR
 field may contain the address of an alternative function to use which
 handles wide (i.e. larger than 32-bit) offsets, so allowing seeks
@@ -619,10 +613,10 @@ following prototype:
 .PP
 .CS
 typedef Tcl_WideInt Tcl_DriverWideSeekProc(
-	ClientData \fIinstanceData\fR,
-	Tcl_WideInt \fIoffset\fR,
-	int \fIseekMode\fR,
-	int *\fIerrorCodePtr\fR);
+        ClientData \fIinstanceData\fR,
+        Tcl_WideInt \fIoffset\fR,
+        int \fIseekMode\fR,
+        int *\fIerrorCodePtr\fR);
 .CE
 .PP
 The arguments and return values mean the same thing as with
@@ -633,9 +627,7 @@ The \fIseekProc\fR value can be retrieved with
 \fBTcl_ChannelSeekProc\fR, which returns a pointer to the function,
 and similarly the \fIwideSeekProc\fR can be retrieved with
 \fBTcl_ChannelWideSeekProc\fR.
-.VE 8.4
-
-.SH SETOPTIONPROC
+.SS SETOPTIONPROC
 .PP
 The \fIsetOptionProc\fR field contains the address of a function called by
 the generic layer to set a channel type specific option on a channel.
@@ -643,10 +635,10 @@ the generic layer to set a channel type specific option on a channel.
 .PP
 .CS
 typedef int Tcl_DriverSetOptionProc(
-	ClientData \fIinstanceData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	CONST char *\fIoptionName\fR,
-	CONST char *\fInewValue\fR);
+        ClientData \fIinstanceData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        const char *\fIoptionName\fR,
+        const char *\fInewValue\fR);
 .CE
 .PP
 \fIoptionName\fR is the name of an option to set, and \fInewValue\fR is
@@ -656,7 +648,7 @@ created. The function should do whatever channel type specific action is
 required to implement the new value of the option.
 .PP
 Some options are handled by the generic code and this function is never
-called to set them, e.g. \fB-blockmode\fR. Other options are specific to
+called to set them, e.g. \fB\-blockmode\fR. Other options are specific to
 each channel type and the \fIsetOptionProc\fR procedure of the channel
 driver will get called to implement them. The \fIsetOptionProc\fR field can
 be NULL, which indicates that this channel type supports no type specific
@@ -676,8 +668,7 @@ error code.
 .PP
 This value can be retrieved with \fBTcl_ChannelSetOptionProc\fR, which returns
 a pointer to the function.
-
-.SH GETOPTIONPROC
+.SS GETOPTIONPROC
 .PP
 The \fIgetOptionProc\fR field contains the address of a function called by
 the generic layer to get the value of a channel type specific option on a
@@ -685,10 +676,10 @@ channel. \fIgetOptionProc\fR must match the following prototype:
 .PP
 .CS
 typedef int Tcl_DriverGetOptionProc(
-	ClientData \fIinstanceData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	CONST char *\fIoptionName\fR,
-	Tcl_DString *\fIoptionValue\fR);
+        ClientData \fIinstanceData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        const char *\fIoptionName\fR,
+        Tcl_DString *\fIoptionValue\fR);
 .CE
 .PP
 \fIOptionName\fR is the name of an option supported by this type of
@@ -706,7 +697,7 @@ function should also call \fBTcl_SetErrno\fR to store an appropriate POSIX
 error code.
 .PP
 Some options are handled by the generic code and this function is never
-called to retrieve their value, e.g. \fB-blockmode\fR. Other options are
+called to retrieve their value, e.g. \fB\-blockmode\fR. Other options are
 specific to each channel type and the \fIgetOptionProc\fR procedure of the
 channel driver will get called to implement them. The \fIgetOptionProc\fR
 field can be NULL, which indicates that this channel type supports no type
@@ -714,8 +705,7 @@ specific options.
 .PP
 This value can be retrieved with \fBTcl_ChannelGetOptionProc\fR, which returns
 a pointer to the function.
-
-.SH WATCHPROC
+.SS WATCHPROC
 .PP
 The \fIwatchProc\fR field contains the address of a function called
 by the generic layer to initialize the event notification mechanism to
@@ -724,8 +714,8 @@ notice events of interest on this channel.
 .PP
 .CS
 typedef void Tcl_DriverWatchProc(
-	ClientData \fIinstanceData\fR,
-	int \fImask\fR);
+        ClientData \fIinstanceData\fR,
+        int \fImask\fR);
 .CE
 .PP
 The \fIinstanceData\fR is the same as the value passed to
@@ -747,8 +737,7 @@ details on how to queue an event.
 .PP
 This value can be retrieved with \fBTcl_ChannelWatchProc\fR, which returns
 a pointer to the function.
-
-.SH GETHANDLEPROC
+.SS GETHANDLEPROC
 .PP
 The \fIgetHandleProc\fR field contains the address of a function called by
 the generic layer to retrieve a device-specific handle from the channel.
@@ -756,9 +745,9 @@ the generic layer to retrieve a device-specific handle from the channel.
 .PP
 .CS
 typedef int Tcl_DriverGetHandleProc(
-	ClientData \fIinstanceData\fR,
-	int \fIdirection\fR,
-	ClientData *\fIhandlePtr\fR);
+        ClientData \fIinstanceData\fR,
+        int \fIdirection\fR,
+        ClientData *\fIhandlePtr\fR);
 .CE
 .PP
 \fIInstanceData\fR is the same as the value passed to
@@ -777,8 +766,7 @@ device handles, the function should return \fBTCL_ERROR\fR.
 .PP
 This value can be retrieved with \fBTcl_ChannelGetHandleProc\fR, which returns
 a pointer to the function.
-
-.SH FLUSHPROC
+.SS FLUSHPROC
 .PP
 The \fIflushProc\fR field is currently reserved for future use.
 It should be set to NULL.
@@ -786,13 +774,12 @@ It should be set to NULL.
 .PP
 .CS
 typedef int Tcl_DriverFlushProc(
-	ClientData \fIinstanceData\fR);
+        ClientData \fIinstanceData\fR);
 .CE
 .PP
 This value can be retrieved with \fBTcl_ChannelFlushProc\fR, which returns
 a pointer to the function.
-
-.SH HANDLERPROC
+.SS HANDLERPROC
 .PP
 The \fIhandlerProc\fR field contains the address of a function called by
 the generic layer to notify the channel that an event occurred.  It should
@@ -802,8 +789,8 @@ that occur on the underlying (stacked) channel.
 .PP
 .CS
 typedef int Tcl_DriverHandlerProc(
-	ClientData \fIinstanceData\fR,
-	int \fIinterestMask\fR);
+        ClientData \fIinstanceData\fR,
+        int \fIinterestMask\fR);
 .CE
 .PP
 \fIInstanceData\fR is the same as the value passed to \fBTcl_CreateChannel\fR
@@ -814,8 +801,7 @@ type of event occurred on this channel.
 This value can be retrieved with \fBTcl_ChannelHandlerProc\fR, which returns
 a pointer to the function.
 
-.VS 8.4
-.SH "THREADACTIONPROC"
+.SS "THREADACTIONPROC"
 .PP
 The \fIthreadActionProc\fR field contains the address of the function
 called by the generic layer when a channel is created, closed, or
@@ -832,8 +818,8 @@ might be maintaining using the calling thread as the associate. See
 .PP
 .CS
 typedef void Tcl_DriverThreadActionProc(
-	ClientData \fIinstanceData\fR,
-      int        \fIaction\fR);
+        ClientData \fIinstanceData\fR,
+        int        \fIaction\fR);
 .CE
 .PP
 \fIInstanceData\fR is the same as the value passed to
@@ -841,53 +827,79 @@ typedef void Tcl_DriverThreadActionProc(
 .PP
 These values can be retrieved with \fBTcl_ChannelThreadActionProc\fR,
 which returns a pointer to the function.
-.VE 8.4
-
+.SS "TRUNCATEPROC"
+.PP
+The \fItruncateProc\fR field contains the address of the function
+called by the generic layer when a channel is truncated to some
+length. It can be NULL.
+.PP
+.CS
+typedef int Tcl_DriverTruncateProc(
+        ClientData \fIinstanceData\fR,
+        Tcl_WideInt \fIlength\fR);
+.CE
+.PP
+\fIInstanceData\fR is the same as the value passed to
+\fBTcl_CreateChannel\fR when this channel was created, and
+\fIlength\fR is the new length of the underlying file, which should
+not be negative. The result should be 0 on success or an errno code
+(suitable for use with \fBTcl_SetErrno\fR) on failure.
+.PP
+These values can be retrieved with \fBTcl_ChannelTruncateProc\fR,
+which returns a pointer to the function.
 .SH TCL_BADCHANNELOPTION
 .PP
-This procedure generates a "bad option" error message in an
+This procedure generates a
+.QW "bad option"
+error message in an
 (optional) interpreter.  It is used by channel drivers when 
-a invalid Set/Get option is requested. Its purpose is to concatenate
+an invalid Set/Get option is requested. Its purpose is to concatenate
 the generic options list to the specific ones and factorize
 the generic options error message string.
 .PP
-It always return \fBTCL_ERROR\fR
+It always returns \fBTCL_ERROR\fR
 .PP
 An error message is generated in \fIinterp\fR's result object to
-indicate that a command was invoked with the a bad option
+indicate that a command was invoked with a bad option.
 The message has the form
 .CS
     bad option "blah": should be one of 
     <...generic options...>+<...specific options...>
+.CE
 so you get for instance:
+.CS
     bad option "-blah": should be one of -blocking,
     -buffering, -buffersize, -eofchar, -translation,
     -peername, or -sockname
-when called with \fIoptionList\fR="peername sockname"
 .CE
-``blah'' is the \fIoptionName\fR argument and ``<specific options>''
+when called with \fIoptionList\fR equal to
+.QW "peername sockname"
+.PP
+.QW blah
+is the \fIoptionName\fR argument and
+.QW "<specific options>"
 is a space separated list of specific option words.
 The function takes good care of inserting minus signs before
-each option, commas after, and an ``or'' before the last option.
-
+each option, commas after, and an
+.QW or
+before the last option.
 .SH "OLD CHANNEL TYPES"
-
 The original (8.3.1 and below) \fBTcl_ChannelType\fR structure contains
 the following fields:
 .PP
 .CS
 typedef struct Tcl_ChannelType {
-	char *\fItypeName\fR;
-	Tcl_DriverBlockModeProc *\fIblockModeProc\fR;	
-	Tcl_DriverCloseProc *\fIcloseProc\fR;
-	Tcl_DriverInputProc *\fIinputProc\fR;
-	Tcl_DriverOutputProc *\fIoutputProc\fR;
-	Tcl_DriverSeekProc *\fIseekProc\fR;
-	Tcl_DriverSetOptionProc *\fIsetOptionProc\fR;
-	Tcl_DriverGetOptionProc *\fIgetOptionProc\fR;
-	Tcl_DriverWatchProc *\fIwatchProc\fR;
-	Tcl_DriverGetHandleProc *\fIgetHandleProc\fR;
-	Tcl_DriverClose2Proc *\fIclose2Proc\fR;
+        char *\fItypeName\fR;
+        Tcl_DriverBlockModeProc *\fIblockModeProc\fR;
+        Tcl_DriverCloseProc *\fIcloseProc\fR;
+        Tcl_DriverInputProc *\fIinputProc\fR;
+        Tcl_DriverOutputProc *\fIoutputProc\fR;
+        Tcl_DriverSeekProc *\fIseekProc\fR;
+        Tcl_DriverSetOptionProc *\fIsetOptionProc\fR;
+        Tcl_DriverGetOptionProc *\fIgetOptionProc\fR;
+        Tcl_DriverWatchProc *\fIwatchProc\fR;
+        Tcl_DriverGetHandleProc *\fIgetHandleProc\fR;
+        Tcl_DriverClose2Proc *\fIclose2Proc\fR;
 } Tcl_ChannelType;
 .CE
 .PP
@@ -897,33 +909,32 @@ the new \fBTcl_ChannelType\fR structure if you are creating a stacked
 channel driver, due to problems with the earlier stacked channel
 implementation (in 8.2.0 to 8.3.1).
 .PP
-.VS 8.4
 Prior to 8.4.0 (i.e. during the later releases of 8.3 and early part
 of the 8.4 development cycle) the \fBTcl_ChannelType\fR structure
 contained the following fields:
 .PP
 .CS
 typedef struct Tcl_ChannelType {
-	char *\fItypeName\fR;
-	Tcl_ChannelTypeVersion \fIversion\fR;
-	Tcl_DriverCloseProc *\fIcloseProc\fR;
-	Tcl_DriverInputProc *\fIinputProc\fR;
-	Tcl_DriverOutputProc *\fIoutputProc\fR;
-	Tcl_DriverSeekProc *\fIseekProc\fR;
-	Tcl_DriverSetOptionProc *\fIsetOptionProc\fR;
-	Tcl_DriverGetOptionProc *\fIgetOptionProc\fR;
-	Tcl_DriverWatchProc *\fIwatchProc\fR;
-	Tcl_DriverGetHandleProc *\fIgetHandleProc\fR;
-	Tcl_DriverClose2Proc *\fIclose2Proc\fR;
-	Tcl_DriverBlockModeProc *\fIblockModeProc\fR;	
-	Tcl_DriverFlushProc *\fIflushProc\fR;	
-	Tcl_DriverHandlerProc *\fIhandlerProc\fR;	
+        char *\fItypeName\fR;
+        Tcl_ChannelTypeVersion \fIversion\fR;
+        Tcl_DriverCloseProc *\fIcloseProc\fR;
+        Tcl_DriverInputProc *\fIinputProc\fR;
+        Tcl_DriverOutputProc *\fIoutputProc\fR;
+        Tcl_DriverSeekProc *\fIseekProc\fR;
+        Tcl_DriverSetOptionProc *\fIsetOptionProc\fR;
+        Tcl_DriverGetOptionProc *\fIgetOptionProc\fR;
+        Tcl_DriverWatchProc *\fIwatchProc\fR;
+        Tcl_DriverGetHandleProc *\fIgetHandleProc\fR;
+        Tcl_DriverClose2Proc *\fIclose2Proc\fR;
+        Tcl_DriverBlockModeProc *\fIblockModeProc\fR;
+        Tcl_DriverFlushProc *\fIflushProc\fR;
+        Tcl_DriverHandlerProc *\fIhandlerProc\fR;
+        Tcl_DriverTruncateProc *\fItruncateProc\fR;
 } Tcl_ChannelType;
 .CE
 .PP
 When the above structure is registered as a channel type, the
 \fIversion\fR field should always be \fBTCL_CHANNEL_VERSION_2\fR.
-.VE 8.4
 
 .SH "SEE ALSO"
 Tcl_Close(3), Tcl_OpenFileChannel(3), Tcl_SetErrno(3), Tcl_QueueEvent(3), Tcl_StackChannel(3), Tcl_GetStdChannel(3)
diff --git a/doc/CrtChnlHdlr.3 b/doc/CrtChnlHdlr.3
index ea07ef2..f5fd1bd 100644
--- a/doc/CrtChnlHdlr.3
+++ b/doc/CrtChnlHdlr.3
@@ -48,8 +48,8 @@ what it means for a channel to be readable or writable.
 \fIProc\fR must conform to the following prototype:
 .CS
 typedef void Tcl_ChannelProc(
-	ClientData \fIclientData\fR,
-	int \fImask\fR);
+        ClientData \fIclientData\fR,
+        int \fImask\fR);
 .CE
 .PP
 The \fIclientData\fR argument is the same as the value passed to
@@ -62,7 +62,7 @@ contain a subset of the bits from the \fImask\fR argument to
 .PP
 Each channel handler is identified by a unique combination of \fIchannel\fR,
 \fIproc\fR and \fIclientData\fR.
-There may be many handlers for a given channel as long as they don't
+There may be many handlers for a given channel as long as they do not
 have the same \fIchannel\fR, \fIproc\fR, and \fIclientData\fR.
 If \fBTcl_CreateChannelHandler\fR is invoked when there is already a handler
 for \fIchannel\fR, \fIproc\fR, and \fIclientData\fR, then no new
diff --git a/doc/CrtCloseHdlr.3 b/doc/CrtCloseHdlr.3
index 35f8261..c8804b1 100644
--- a/doc/CrtCloseHdlr.3
+++ b/doc/CrtCloseHdlr.3
@@ -21,7 +21,7 @@ void
 \fBTcl_DeleteCloseHandler\fR(\fIchannel, proc, clientData\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_CloseProc callbackData in
+.AS Tcl_CloseProc clientData
 .AP Tcl_Channel channel in
 The channel for which to create or delete a close callback.
 .AP Tcl_CloseProc *proc in
@@ -39,7 +39,7 @@ Arbitrary one-word value to pass to \fIproc\fR.
 .PP
 .CS
 typedef void Tcl_CloseProc(
-	ClientData \fIclientData\fR);
+        ClientData \fIclientData\fR);
 .CE
 .PP
 The \fIclientData\fR is the same as the value provided in the call to
diff --git a/doc/CrtCommand.3 b/doc/CrtCommand.3
index da0da22..fcc04d5 100644
--- a/doc/CrtCommand.3
+++ b/doc/CrtCommand.3
@@ -17,12 +17,10 @@ Tcl_CreateCommand \- implement new commands in C
 Tcl_Command
 \fBTcl_CreateCommand\fR(\fIinterp, cmdName, proc, clientData, deleteProc\fR)
 .SH ARGUMENTS
-.AS Tcl_CmdDeleteProc **deleteProcPtr
+.AS Tcl_CmdDeleteProc *deleteProc
 .AP Tcl_Interp *interp in
 Interpreter in which to create new command.
-.VS 8.4
-.AP "CONST char" *cmdName in
-.VE
+.AP "const char" *cmdName in
 Name of command.
 .AP Tcl_CmdProc *proc in
 Implementation of new command:  \fIproc\fR will be called whenever
@@ -79,10 +77,10 @@ and it returns NULL.
 \fBTcl_CmdProc\fR:
 .CS
 typedef int Tcl_CmdProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	int \fIargc\fR,
-	CONST char *\fIargv\fR[]);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        int \fIargc\fR,
+        const char *\fIargv\fR[]);
 .CE
 When \fIproc\fR is invoked the \fIclientData\fR and \fIinterp\fR
 parameters will be copies of the \fIclientData\fR and \fIinterp\fR
@@ -95,26 +93,23 @@ the command name) and \fIargv\fR giving the values of the arguments
 as strings.  The \fIargv\fR array will contain \fIargc\fR+1 values;
 the first \fIargc\fR values point to the argument strings, and the
 last value is NULL.  
-.VS
 Note that the argument strings should not be modified as they may
 point to constant strings or may be shared with other parts of the
 interpreter.
-.VE
 .PP
-.VS
 Note that the argument strings are encoded in normalized UTF-8 since
 version 8.1 of Tcl.
-.VE
 .PP
-\fIProc\fR must return an integer code that is either \fBTCL_OK\fR, \fBTCL_ERROR\fR,
-\fBTCL_RETURN\fR, \fBTCL_BREAK\fR, or \fBTCL_CONTINUE\fR.  See the Tcl overview man page
+\fIProc\fR must return an integer code that is expected to be one of
+\fBTCL_OK\fR, \fBTCL_ERROR\fR, \fBTCL_RETURN\fR, \fBTCL_BREAK\fR, or
+\fBTCL_CONTINUE\fR.  See the Tcl overview man page
 for details on what these codes mean.  Most normal commands will only
 return \fBTCL_OK\fR or \fBTCL_ERROR\fR.  In addition, \fIproc\fR must set
 the interpreter result to point to a string value;
 in the case of a \fBTCL_OK\fR return code this gives the result
 of the command, and in the case of \fBTCL_ERROR\fR it gives an error message.
 The \fBTcl_SetResult\fR procedure provides an easy interface for setting
-the return value;  for complete details on how the the interpreter result
+the return value;  for complete details on how the interpreter result
 field is managed, see the \fBTcl_Interp\fR man page.
 Before invoking a command procedure,
 \fBTcl_Eval\fR sets the interpreter result to point to an empty string,
@@ -135,11 +130,11 @@ application an opportunity to release any structures associated
 with the command.  \fIDeleteProc\fR should have arguments and
 result that match the type \fBTcl_CmdDeleteProc\fR:
 .CS
-typedef void Tcl_CmdDeleteProc(ClientData \fIclientData\fR);
+typedef void Tcl_CmdDeleteProc(
+        ClientData \fIclientData\fR);
 .CE
 The \fIclientData\fR argument will be the same as the \fIclientData\fR
 argument passed to \fBTcl_CreateCommand\fR.
-.PP
 
 .SH "SEE ALSO"
 Tcl_CreateObjCommand, Tcl_DeleteCommand, Tcl_GetCommandInfo, Tcl_SetCommandInfo, Tcl_GetCommandName, Tcl_SetObjResult
diff --git a/doc/CrtFileHdlr.3 b/doc/CrtFileHdlr.3
index af21f0b..5627bd4 100644
--- a/doc/CrtFileHdlr.3
+++ b/doc/CrtFileHdlr.3
@@ -13,18 +13,14 @@ Tcl_CreateFileHandler, Tcl_DeleteFileHandler \- associate procedure callbacks wi
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
-.VS
 .sp
 \fBTcl_CreateFileHandler\fR(\fIfd, mask, proc, clientData\fR)
 .sp
 \fBTcl_DeleteFileHandler\fR(\fIfd\fR)
-.VE
 .SH ARGUMENTS
 .AS Tcl_FileProc clientData
-.VS
 .AP int fd in
 Unix file descriptor for an open file or device.
-.VE
 .AP int mask in
 Conditions under which \fIproc\fR should be called:
 OR-ed combination of \fBTCL_READABLE\fR, \fBTCL_WRITABLE\fR,
@@ -39,12 +35,10 @@ Arbitrary one-word value to pass to \fIproc\fR.
 
 .SH DESCRIPTION
 .PP
-.VS
 \fBTcl_CreateFileHandler\fR arranges for \fIproc\fR to be
 invoked in the future whenever I/O becomes possible on a file
 or an exceptional condition exists for the file.  The file
 is indicated by \fIfd\fR, and the conditions of interest
-.VE
 are indicated by \fImask\fR.  For example, if \fImask\fR
 is \fBTCL_READABLE\fR, \fIproc\fR will be called when
 the file is readable.
@@ -57,8 +51,8 @@ as \fBvwait\fR.
 type \fBTcl_FileProc\fR:
 .CS
 typedef void Tcl_FileProc(
-	ClientData \fIclientData\fR,
-	int \fImask\fR);
+        ClientData \fIclientData\fR,
+        int \fImask\fR);
 .CE
 The \fIclientData\fR parameter to \fIproc\fR is a copy
 of the \fIclientData\fR
@@ -85,14 +79,12 @@ events while waiting for files to become ready for I/O.  For this to work
 correctly, the application may need to use non-blocking I/O operations on
 the files for which handlers are declared.  Otherwise the application may
 block if it reads or writes too much data; while waiting for the I/O to
-complete the application won't be able to service other events. Use
+complete the application will not be able to service other events. Use
 \fBTcl_SetChannelOption\fR with \fB\-blocking\fR to set the channel into
 blocking or nonblocking mode as required.
 .PP
-.VS
 Note that these interfaces are only supported by the Unix
 implementation of the Tcl notifier.   
-.VE
 
 .SH KEYWORDS
 callback, file, handler
diff --git a/doc/CrtMathFnc.3 b/doc/CrtMathFnc.3
index 43ba8fd..9629912 100644
--- a/doc/CrtMathFnc.3
+++ b/doc/CrtMathFnc.3
@@ -17,20 +17,17 @@ Tcl_CreateMathFunc, Tcl_GetMathFuncInfo, Tcl_ListMathFuncs \- Define, query and
 void
 \fBTcl_CreateMathFunc\fR(\fIinterp, name, numArgs, argTypes, proc, clientData\fR)
 .sp
-.VS 8.4
 int
-\fBTcl_GetMathFuncInfo\fR(\fIinterp, name, numArgsPtr, argTypesPtr, procPtr, clientDataPtr\fR)
+\fBTcl_GetMathFuncInfo\fR(\fIinterp, name, numArgsPtr, argTypesPtr, procPtr,
+                    clientDataPtr\fR)
 .sp
 Tcl_Obj *
 \fBTcl_ListMathFuncs\fR(\fIinterp, pattern\fR)
-.VE
 .SH ARGUMENTS
-.AS Tcl_ValueType *clientDataPtr
+.AS Tcl_ValueType *clientDataPtr out
 .AP Tcl_Interp *interp in
 Interpreter in which new function will be defined.
-.VS 8.4
-.AP "CONST char" *name in
-.VE
+.AP "const char" *name in
 Name for new function.
 .AP int numArgs in
 Number of arguments to new function;  also gives size of \fIargTypes\fR array.
@@ -51,12 +48,12 @@ will need to be freed up using \fITcl_Free\fR.
 .AP Tcl_MathProc **procPtr out
 Points to a variable that will be set to contain a pointer to the
 implementation code for the function (or NULL if the function is
-implemented directly in bytecode.)
+implemented directly in bytecode).
 .AP ClientData *clientDataPtr out
 Points to a variable that will be set to contain the clientData
 argument passed to \fITcl_CreateMathFunc\fR when the function was
 created if the function is not implemented directly in bytecode.
-.AP "CONST char" *pattern in
+.AP "const char" *pattern in
 Pattern to match against function names so as to filter them (by
 passing to \fITcl_StringMatch\fR), or NULL to not apply any filter.
 .BE
@@ -65,71 +62,70 @@ passing to \fITcl_StringMatch\fR), or NULL to not apply any filter.
 .PP
 Tcl allows a number of mathematical functions to be used in
 expressions, such as \fBsin\fR, \fBcos\fR, and \fBhypot\fR.
-\fBTcl_CreateMathFunc\fR allows applications to add additional functions
+These functions are represented by commands in the namespace,
+\fBtcl::mathfunc\fR.  The \fBTcl_CreateMathFunc\fR function is
+an obsolete way for applications to add additional functions
 to those already provided by Tcl or to replace existing functions.
+It should not be used by new applications, which should create
+math functions using \fBTcl_CreateObjCommand\fR to create a command
+in the \fBtcl::mathfunc\fR namespace.
+.PP
+In the \fBTcl_CreateMathFunc\fR interface,
 \fIName\fR is the name of the function as it will appear in expressions.
-If \fIname\fR doesn't already exist as a function then a new function
-is created.  If it does exist, then the existing function is replaced.
+If \fIname\fR does not already exist in the \fB::tcl::mathfunc\fR
+namespace, then a new command is created in that namespace.
+If \fIname\fR does exist, then the existing function is replaced.
 \fINumArgs\fR and \fIargTypes\fR describe the arguments to the function.
 Each entry in the \fIargTypes\fR array must be
-.VS 8.4
-one of TCL_INT, TCL_DOUBLE, TCL_WIDE_INT,
-or TCL_EITHER to indicate whether the corresponding argument must be an
+one of \fBTCL_INT\fR, \fBTCL_DOUBLE\fR, \fBTCL_WIDE_INT\fR,
+or \fBTCL_EITHER\fR to indicate whether the corresponding argument must be an
 integer, a double-precision floating value, a wide (64-bit) integer,
 or any, respectively.
-.VE 8.4
 .PP
 Whenever the function is invoked in an expression Tcl will invoke
 \fIproc\fR.  \fIProc\fR should have arguments and result that match
 the type \fBTcl_MathProc\fR:
 .CS
 typedef int Tcl_MathProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	Tcl_Value *\fIargs\fR,
-	Tcl_Value *\fIresultPtr\fR);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        Tcl_Value *\fIargs\fR,
+        Tcl_Value *\fIresultPtr\fR);
 .CE
 .PP
 When \fIproc\fR is invoked the \fIclientData\fR and \fIinterp\fR
 arguments will be the same as those passed to \fBTcl_CreateMathFunc\fR.
 \fIArgs\fR will point to an array of \fInumArgs\fR Tcl_Value structures,
 which describe the actual arguments to the function:
-.VS 8.4
 .CS
 typedef struct Tcl_Value {
-	Tcl_ValueType \fItype\fR;
-	long \fIintValue\fR;
-	double \fIdoubleValue\fR;
-	Tcl_WideInt \fIwideValue\fR;
+        Tcl_ValueType \fItype\fR;
+        long \fIintValue\fR;
+        double \fIdoubleValue\fR;
+        Tcl_WideInt \fIwideValue\fR;
 } Tcl_Value;
 .CE
 .PP
 The \fItype\fR field indicates the type of the argument and is
-one of TCL_INT, TCL_DOUBLE or TCL_WIDE_INT.
-.VE 8.4
+one of \fBTCL_INT\fR, \fBTCL_DOUBLE\fR or \fBTCL_WIDE_INT\fR.
 It will match the \fIargTypes\fR value specified for the function unless
-the \fIargTypes\fR value was TCL_EITHER. Tcl converts
+the \fIargTypes\fR value was \fBTCL_EITHER\fR. Tcl converts
 the argument supplied in the expression to the type requested in
 \fIargTypes\fR, if that is necessary.
 Depending on the value of the \fItype\fR field, the \fIintValue\fR,
-.VS 8.4
 \fIdoubleValue\fR or \fIwideValue\fR
-.VE 8.4
 field will contain the actual value of the argument.
 .PP
 \fIProc\fR should compute its result and store it either as an integer
 in \fIresultPtr->intValue\fR or as a floating value in
 \fIresultPtr->doubleValue\fR.
 It should set also \fIresultPtr->type\fR to one of
-.VS 8.4
-TCL_INT, TCL_DOUBLE or TCL_WIDE_INT
-.VE 8.4
+\fBTCL_INT\fR, \fBTCL_DOUBLE\fR or \fBTCL_WIDE_INT\fR
 to indicate which value was set.
-Under normal circumstances \fIproc\fR should return TCL_OK.
+Under normal circumstances \fIproc\fR should return \fBTCL_OK\fR.
 If an error occurs while executing the function, \fIproc\fR should
-return TCL_ERROR and leave an error message in the interpreter's result.
+return \fBTCL_ERROR\fR and leave an error message in the interpreter's result.
 .PP
-.VS 8.4
 \fBTcl_GetMathFuncInfo\fR retrieves the values associated with
 function \fIname\fR that were passed to a preceding
 \fBTcl_CreateMathFunc\fR call.  Normally, the return code is
@@ -140,20 +136,21 @@ result.
 If an error did not occur, the array reference placed in the variable
 pointed to by \fIargTypesPtr\fR is newly allocated, and should be
 released by passing it to \fBTcl_Free\fR.  Some functions (the
-standard set implemented in the core) are implemented directly at the
-bytecode level; attempting to retrieve values for them causes a NULL
-to be stored in the variable pointed to by \fIprocPtr\fR and the
-variable pointed to by \fIclientDataPtr\fR will not be modified.
+standard set implemented in the core, and those defined by placing
+commands in the \fBtcl::mathfunc\fR namespace) do not have
+argument type information; attempting to retrieve values for
+them causes a NULL to be stored in the variable pointed to by 
+\fIprocPtr\fR and the variable pointed to by \fIclientDataPtr\fR
+will not be modified.  The variable pointed to by \fInumArgsPointer\fR
+will contain -1, and no argument types will be stored in the variable
+pointed to by \fIargTypesPointer\fR.
 .PP
 \fBTcl_ListMathFuncs\fR returns a Tcl object containing a list of all
 the math functions defined in the interpreter whose name matches
-\fIpattern\fR.  In the case of an error, NULL is returned and an error
-message is left in the interpreter result, and otherwise the returned
-object will have a reference count of zero.
-.VE
+\fIpattern\fR.  The returned object has a reference count of zero.
+
+.SH "SEE ALSO"
+expr(n), info(n), Tcl_CreateObjCommand(3), Tcl_Free(3), Tcl_NewListObj(3)
 
 .SH KEYWORDS
 expression, mathematical function
-
-.SH "SEE ALSO"
-expr(n), info(n), Tcl_Free(3), Tcl_NewListObj(3)
diff --git a/doc/CrtObjCmd.3 b/doc/CrtObjCmd.3
index bcb57f3..a05efc2 100644
--- a/doc/CrtObjCmd.3
+++ b/doc/CrtObjCmd.3
@@ -28,17 +28,13 @@ int
 int
 \fBTcl_SetCommandInfo\fR(\fIinterp, cmdName, infoPtr\fR)
 .sp
-.VS 8.4
 int
 \fBTcl_GetCommandInfoFromToken\fR(\fItoken, infoPtr\fR)
 .sp
 int
 \fBTcl_SetCommandInfoFromToken\fR(\fItoken, infoPtr\fR)
-.VE
 .sp
-.VS 8.4
-CONST char *
-.VE
+const char *
 \fBTcl_GetCommandName\fR(\fIinterp, token\fR)
 .sp
 void
@@ -47,12 +43,10 @@ void
 Tcl_Command
 \fBTcl_GetCommandFromObj\fR(\fIinterp, objPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_ObjCmdProc *deleteProc in/out
+.AS Tcl_CmdDeleteProc *deleteProc in/out
 .AP Tcl_Interp *interp in
 Interpreter in which to create a new command or that contains a command.
-.VS 8.4
 .AP char *cmdName in
-.VE
 Name of command.
 .AP Tcl_ObjCmdProc *proc in
 Implementation of the new command: \fIproc\fR will be called whenever
@@ -96,11 +90,10 @@ and it returns NULL.
 \fBTcl_ObjCmdProc\fR:
 .CS
 typedef int Tcl_ObjCmdProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	int \fIobjc\fR,
-.VS
-	Tcl_Obj *CONST \fIobjv\fR[]);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        int \fIobjc\fR,
+        Tcl_Obj *const \fIobjv\fR[]);
 .CE
 When \fIproc\fR is invoked, the \fIclientData\fR and \fIinterp\fR parameters
 will be copies of the \fIclientData\fR and \fIinterp\fR arguments given to
@@ -117,7 +110,7 @@ Additionally, when \fIproc\fR is invoked, it must not modify the contents
 of the \fIobjv\fR array by assigning new pointer values to any element of the
 array (for example, \fIobjv\fR[\fB2\fR] = \fBNULL\fR) because this will
 cause memory to be lost and the runtime stack to be corrupted.  The
-\fBCONST\fR in the declaration of \fIobjv\fR will cause ANSI-compliant
+\fBconst\fR in the declaration of \fIobjv\fR will cause ANSI-compliant
 compilers to report any such attempted assignment as an error.  However,
 it is acceptable to modify the internal representation of any individual
 object argument.  For instance, the user may call
@@ -125,7 +118,6 @@ object argument.  For instance, the user may call
 representation of that object; that call may change the type of the object
 that \fIobjv\fR[\fB2\fR] points at, but will not change where
 \fIobjv\fR[\fB2\fR] points.
-.VE
 .PP
 \fIproc\fR must return an integer code that is either \fBTCL_OK\fR,
 \fBTCL_ERROR\fR, \fBTCL_RETURN\fR, \fBTCL_BREAK\fR, or \fBTCL_CONTINUE\fR.
@@ -168,7 +160,8 @@ application an opportunity to release any structures associated
 with the command.  \fIDeleteProc\fR should have arguments and
 result that match the type \fBTcl_CmdDeleteProc\fR:
 .CS
-typedef void Tcl_CmdDeleteProc(ClientData \fIclientData\fR);
+typedef void Tcl_CmdDeleteProc(
+        ClientData \fIclientData\fR);
 .CE
 The \fIclientData\fR argument will be the same as the \fIclientData\fR
 argument passed to \fBTcl_CreateObjCommand\fR.
@@ -176,7 +169,7 @@ argument passed to \fBTcl_CreateObjCommand\fR.
 \fBTcl_DeleteCommand\fR deletes a command from a command interpreter.
 Once the call completes, attempts to invoke \fIcmdName\fR in
 \fIinterp\fR will result in errors.
-If \fIcmdName\fR isn't bound as a command in \fIinterp\fR then
+If \fIcmdName\fR is not bound as a command in \fIinterp\fR then
 \fBTcl_DeleteCommand\fR does nothing and returns -1;  otherwise
 it returns 0.
 There are no restrictions on \fIcmdName\fR:  it may refer to
@@ -206,14 +199,14 @@ pointed to by \fIinfoPtr\fR and returns 1.
 A \fBTcl_CmdInfo\fR structure has the following fields:
 .CS
 typedef struct Tcl_CmdInfo {
-    int isNativeObjectProc;
-    Tcl_ObjCmdProc *objProc;
-    ClientData objClientData;
-    Tcl_CmdProc *proc;
-    ClientData clientData;
-    Tcl_CmdDeleteProc *deleteProc;
-    ClientData deleteData;
-    Tcl_Namespace *namespacePtr;
+    int \fIisNativeObjectProc\fR;
+    Tcl_ObjCmdProc *\fIobjProc\fR;
+    ClientData \fIobjClientData\fR;
+    Tcl_CmdProc *\fIproc\fR;
+    ClientData \fIclientData\fR;
+    Tcl_CmdDeleteProc *\fIdeleteProc\fR;
+    ClientData \fIdeleteData\fR;
+    Tcl_Namespace *\fInamespacePtr\fR;
 } Tcl_CmdInfo;
 .CE
 The \fIisNativeObjectProc\fR field has the value 1
@@ -285,16 +278,16 @@ This name does not include any \fB::\fR namespace qualifiers.
 The command corresponding to \fItoken\fR must not have been deleted.
 The string returned by \fBTcl_GetCommandName\fR is in dynamic memory
 owned by Tcl and is only guaranteed to retain its value as long as the
-command isn't deleted or renamed;  callers should copy the string if
+command is not deleted or renamed;  callers should copy the string if
 they need to keep it for a long time.
 .PP
-\fBTcl_GetCommandFullName\fR produces the fully-qualified name
+\fBTcl_GetCommandFullName\fR produces the fully qualified name
 of a command from a command token.  
 The name, including all namespace prefixes,
-is appended to the object specified by \fIobjPtr\fP.
+is appended to the object specified by \fIobjPtr\fR.
 .PP
 \fBTcl_GetCommandFromObj\fR returns a token for the command
-specified by the name in a \fBTcl_Obj\fP.
+specified by the name in a \fBTcl_Obj\fR.
 The command name is resolved relative to the current namespace.
 Returns NULL if the command is not found.
 .SH "SEE ALSO"
diff --git a/doc/CrtSlave.3 b/doc/CrtSlave.3
index f87a4e0..3863373 100644
--- a/doc/CrtSlave.3
+++ b/doc/CrtSlave.3
@@ -8,7 +8,7 @@
 .TH Tcl_CreateSlave 3 7.6 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_IsSafe, Tcl_MakeSafe, Tcl_CreateSlave, Tcl_GetSlave, Tcl_GetMaster, Tcl_GetInterpPath, Tcl_CreateAlias, Tcl_CreateAliasObj, Tcl_GetAlias, Tcl_GetAliasObj, Tcl_ExposeCommand, Tcl_HideCommand \- manage multiple Tcl interpreters, aliases and hidden commands.
+Tcl_IsSafe, Tcl_MakeSafe, Tcl_CreateSlave, Tcl_GetSlave, Tcl_GetMaster, Tcl_GetInterpPath, Tcl_CreateAlias, Tcl_CreateAliasObj, Tcl_GetAlias, Tcl_GetAliasObj, Tcl_ExposeCommand, Tcl_HideCommand \- manage multiple Tcl interpreters, aliases and hidden commands
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -31,20 +31,21 @@ Tcl_Interp *
 int
 \fBTcl_GetInterpPath\fR(\fIaskingInterp, slaveInterp\fR)
 .sp
-.VS
 int
-\fBTcl_CreateAlias\fR(\fIslaveInterp, slaveCmd, targetInterp, targetCmd, argc, argv\fR)
+\fBTcl_CreateAlias\fR(\fIslaveInterp, slaveCmd, targetInterp, targetCmd,
+                argc, argv\fR)
 .sp
 int
-\fBTcl_CreateAliasObj\fR(\fIslaveInterp, slaveCmd, targetInterp, targetCmd, objc, objv\fR)
-.VE
+\fBTcl_CreateAliasObj\fR(\fIslaveInterp, slaveCmd, targetInterp, targetCmd,
+                   objc, objv\fR)
 .sp
 int
-\fBTcl_GetAlias\fR(\fIinterp, slaveCmd, targetInterpPtr, targetCmdPtr, argcPtr, argvPtr\fR)
+\fBTcl_GetAlias\fR(\fIinterp, slaveCmd, targetInterpPtr, targetCmdPtr,
+             argcPtr, argvPtr\fR)
 .sp
-.VS
 int
-\fBTcl_GetAliasObj\fR(\fIinterp, slaveCmd, targetInterpPtr, targetCmdPtr, objcPtr, objvPtr\fR)
+\fBTcl_GetAliasObj\fR(\fIinterp, slaveCmd, targetInterpPtr, targetCmdPtr,
+                objcPtr, objvPtr\fR)
 .sp
 int
 \fBTcl_ExposeCommand\fR(\fIinterp, hiddenCmdName, cmdName\fR)
@@ -52,44 +53,46 @@ int
 int
 \fBTcl_HideCommand\fR(\fIinterp, cmdName, hiddenCmdName\fR)
 .SH ARGUMENTS
-.AS Tcl_InterpDeleteProc **hiddenCmdName
+.AS "const char *const" **targetInterpPtr out
 .AP Tcl_Interp *interp in
 Interpreter in which to execute the specified command.
-.AP "CONST char" *slaveName in
+.AP "const char" *slaveName in
 Name of slave interpreter to create or manipulate.
 .AP int isSafe in
-If non-zero, a ``safe'' slave that is suitable for running untrusted code
+If non-zero, a
+.QW safe
+slave that is suitable for running untrusted code
 is created, otherwise a trusted slave is created.
 .AP Tcl_Interp *slaveInterp in
 Interpreter to use for creating the source command for an alias (see
 below).
-.AP "CONST char" *slaveCmd in
+.AP "const char" *slaveCmd in
 Name of source command for alias.
 .AP Tcl_Interp *targetInterp in
 Interpreter that contains the target command for an alias.
-.AP "CONST char" *targetCmd in
+.AP "const char" *targetCmd in
 Name of target command for alias in \fItargetInterp\fR.
 .AP int argc in
 Count of additional arguments to pass to the alias command.
-.AP "CONST char * CONST" *argv in
+.AP "const char *const" *argv in
 Vector of strings, the additional arguments to pass to the alias command.
 This storage is owned by the caller.
 .AP int objc in
 Count of additional object arguments to pass to the alias object command.
-.AP Tcl_Object **objv in
+.AP Tcl_Obj **objv in
 Vector of Tcl_Obj structures, the additional object arguments to pass to
 the alias object command.
 This storage is owned by the caller.
 .AP Tcl_Interp **targetInterpPtr in
 Pointer to location to store the address of the interpreter where a target
 command is defined for an alias.
-.AP "CONST char" **targetCmdPtr out
+.AP "const char" **targetCmdPtr out
 Pointer to location to store the address of the name of the target command
 for an alias.
 .AP int *argcPtr out
 Pointer to location to store count of additional arguments to be passed to
 the alias. The location is in storage owned by the caller.
-.AP "CONST char" ***argvPtr out
+.AP "const char" ***argvPtr out
 Pointer to location to store a vector of strings, the additional arguments
 to pass to an alias. The location is in storage owned by the caller, the
 vector of strings is owned by the called function.
@@ -101,17 +104,11 @@ Pointer to location to store a vector of Tcl_Obj structures, the additional
 arguments to pass to an object alias command. The location is in storage
 owned by the caller, the vector of Tcl_Obj structures is owned by the
 called function.
-.VS
-.VS 8.4
-.AP "CONST char" *cmdName in
-.VE
+.AP "const char" *cmdName in
 Name of an exposed command to hide or create.
-.VS 8.4
-.AP "CONST char" *hiddenCmdName in
-.VE
+.AP "const char" *hiddenCmdName in
 Name under which a hidden command is stored and with which it can be
 exposed or invoked.
-.VE
 .BE
 
 .SH DESCRIPTION
@@ -129,16 +126,21 @@ It also creates a slave command named \fIslaveName\fR in \fIinterp\fR which
 allows \fIinterp\fR to manipulate the new slave. 
 If \fIisSafe\fR is zero, the command creates a trusted slave in which Tcl
 code has access to all the Tcl commands.
-If it is \fB1\fR, the command creates a ``safe'' slave in which Tcl code
-has access only to set of Tcl commands defined as ``Safe Tcl''; see the
-manual entry for the Tcl \fBinterp\fR command for details.
+If it is \fB1\fR, the command creates a
+.QW safe
+slave in which Tcl code has access only to set of Tcl commands defined as
+.QW "Safe Tcl" ;
+see the manual entry for the Tcl \fBinterp\fR command for details.
 If the creation of the new slave interpreter failed, \fBNULL\fR is returned.
 .PP
-\fBTcl_IsSafe\fR returns \fB1\fR if \fIinterp\fR is ``safe'' (was created
-with the \fBTCL_SAFE_INTERPRETER\fR flag specified),
+\fBTcl_IsSafe\fR returns \fB1\fR if \fIinterp\fR is
+.QW safe
+(was created with the \fBTCL_SAFE_INTERPRETER\fR flag specified),
 \fB0\fR otherwise.
 .PP
-\fBTcl_MakeSafe\fR marks \fIinterp\fR as ``safe'', so that future
+\fBTcl_MakeSafe\fR marks \fIinterp\fR as
+.QW safe ,
+so that future
 calls to \fBTcl_IsSafe\fR will return 1.  It also removes all known
 potentially-unsafe core functionality (both commands and variables)
 from \fIinterp\fR.  However, it cannot know what parts of an extension
@@ -163,7 +165,6 @@ of the relative path succeeds, \fBTCL_OK\fR is returned, else
 \fBTCL_ERROR\fR is returned and the \fIresult\fR field in
 \fIaskingInterp\fR contains the error message.
 .PP
-.VS
 \fBTcl_CreateAlias\fR creates an object command named \fIslaveCmd\fR in
 \fIslaveInterp\fR that when invoked, will cause the command \fItargetCmd\fR
 to be invoked in \fItargetInterp\fR. The arguments specified by the strings
@@ -180,7 +181,6 @@ restrictions on how they are related.
 \fBTcl_CreateAliasObj\fR is similar to \fBTcl_CreateAlias\fR except 
 that it takes a vector of objects to pass as additional arguments instead
 of a vector of strings.
-.VE
 .PP
 \fBTcl_GetAlias\fR returns information about an alias \fIaliasName\fR
 in \fIinterp\fR. Any of the result fields can be \fBNULL\fR, in
@@ -188,7 +188,6 @@ which case the corresponding datum is not returned. If a result field is
 non\-\fBNULL\fR, the address indicated is set to the corresponding datum.
 For example, if \fItargetNamePtr\fR is non\-\fBNULL\fR it is set to a
 pointer to the string containing the name of the target command.
-.VS
 .PP
 \fBTcl_GetAliasObj\fR is similar to \fBTcl_GetAlias\fR except that it
 returns a pointer to a vector of Tcl_Obj structures instead of a vector of
diff --git a/doc/CrtTimerHdlr.3 b/doc/CrtTimerHdlr.3
index 9018ae2..e948728 100644
--- a/doc/CrtTimerHdlr.3
+++ b/doc/CrtTimerHdlr.3
@@ -9,8 +9,7 @@
 .TH Tcl_CreateTimerHandler 3 7.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_CreateTimerHandler, Tcl_DeleteTimerHandler \- call a procedure at a
-given time
+Tcl_CreateTimerHandler, Tcl_DeleteTimerHandler \- call a procedure at a given time
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -28,7 +27,7 @@ Procedure to invoke after \fImilliseconds\fR have elapsed.
 .AP ClientData clientData in
 Arbitrary one-word value to pass to \fIproc\fR.
 .AP Tcl_TimerToken token in
-Token for previously-created timer handler (the return value
+Token for previously created timer handler (the return value
 from some previous call to \fBTcl_CreateTimerHandler\fR).
 .BE
 
@@ -43,7 +42,7 @@ dispatch events through \fBTcl_DoOneEvent\fR or through Tcl commands
 such as \fBvwait\fR.
 The call to \fIproc\fR may not be made at the exact time given by
 \fImilliseconds\fR:  it will be made at the next opportunity
-after that time.  For example, if \fBTcl_DoOneEvent\fR isn't
+after that time.  For example, if \fBTcl_DoOneEvent\fR is not
 called until long after the time has elapsed, or if there
 are other pending events to process before the call to
 \fIproc\fR, then the call to \fIproc\fR will be delayed.
@@ -61,7 +60,7 @@ structure containing application-specific information about
 what to do in \fIproc\fR.
 .PP
 \fBTcl_DeleteTimerHandler\fR may be called to delete a
-previously-created timer handler.  It deletes the handler
+previously created timer handler.  It deletes the handler
 indicated by \fItoken\fR so that no call to \fIproc\fR
 will be made;  if that handler no longer exists
 (e.g. because the time period has already elapsed and \fIproc\fR
diff --git a/doc/CrtTrace.3 b/doc/CrtTrace.3
index e11bd55..076f47b 100644
--- a/doc/CrtTrace.3
+++ b/doc/CrtTrace.3
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1989-1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2002 by Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2002 by Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -23,7 +23,7 @@ Tcl_Trace
 .sp
 \fBTcl_DeleteTrace\fR(\fIinterp, trace\fR)
 .SH ARGUMENTS
-.AS Tcl_CmdObjTraceDeleteProc (clientData)()
+.AS Tcl_CmdObjTraceDeleteProc *deleteProc
 .AP Tcl_Interp *interp in
 Interpreter containing command to be traced or untraced.
 .AP int level in
@@ -36,14 +36,14 @@ A value of 0 means that commands at any level are traced.
 .AP int flags in
 Flags governing the trace execution.  See below for details.
 .AP Tcl_CmdObjTraceProc *objProc in
-Procedure to call for each command that's executed.  See below for
+Procedure to call for each command that is executed.  See below for
 details of the calling sequence.
 .AP Tcl_CmdTraceProc *proc in
-Procedure to call for each command that's executed.  See below for
+Procedure to call for each command that is executed.  See below for
 details on the calling sequence.
 .AP ClientData clientData in
 Arbitrary one-word value to pass to \fIobjProc\fR or \fIproc\fR.
-.AP Tcl_CmdObjTraceDeleteProc *deleteProc
+.AP Tcl_CmdObjTraceDeleteProc *deleteProc in
 Procedure to call when the trace is deleted.  See below for details of
 the calling sequence.  A NULL pointer is permissible and results in no
 callback when the trace is deleted.
@@ -65,13 +65,13 @@ interpreter.
 \fBTcl_CmdObjTraceProc\fR:
 .CS
 typedef int \fBTcl_CmdObjTraceProc\fR( 
-    \fBClientData\fR \fIclientData\fR,
-    \fBTcl_Interp\fR* \fIinterp\fR,
-    int \fIlevel\fR,
-    CONST char* \fIcommand\fR,
-    \fBTcl_Command\fR \fIcommandToken\fR,
-    int \fIobjc\fR,
-    \fBTcl_Obj\fR *CONST \fIobjv\fR[] );
+        \fBClientData\fR \fIclientData\fR,
+        \fBTcl_Interp\fR* \fIinterp\fR,
+        int \fIlevel\fR,
+        const char *\fIcommand\fR,
+        \fBTcl_Command\fR \fIcommandToken\fR,
+        int \fIobjc\fR,
+        \fBTcl_Obj\fR *const \fIobjv\fR[] );
 .CE
 The \fIclientData\fR and \fIinterp\fR parameters are copies of the
 corresponding arguments given to \fBTcl_CreateTrace\fR.
@@ -141,8 +141,7 @@ When \fBTcl_DeleteTrace\fR is called, the interpreter invokes the
 \fBTcl_CmdObjTraceDeleteProc\fR:
 .CS
 typedef void \fBTcl_CmdObjTraceDeleteProc\fR( 
-    \fBClientData\fR \fIclientData\fR
-);
+        \fBClientData\fR \fIclientData\fR);
 .CE
 The \fIclientData\fR parameter will be the same as the
 \fIclientData\fR parameter that was originally passed to
@@ -156,14 +155,14 @@ that its \fIproc\fR parameter should have arguments and result that
 match the type \fBTcl_CmdTraceProc\fR:
 .CS
 typedef void Tcl_CmdTraceProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	int \fIlevel\fR,
-	char *\fIcommand\fR,
-	Tcl_CmdProc *\fIcmdProc\fR,
-	ClientData \fIcmdClientData\fR,
-	int \fIargc\fR,
-	CONST char *\fIargv\fR[]);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        int \fIlevel\fR,
+        char *\fIcommand\fR,
+        Tcl_CmdProc *\fIcmdProc\fR,
+        ClientData \fIcmdClientData\fR,
+        int \fIargc\fR,
+        const char *\fIargv\fR[]);
 .CE
 The parameters to the \fIproc\fR callback are similar to those of the
 \fIobjProc\fR callback above. The \fIcommandToken\fR is
diff --git a/doc/DString.3 b/doc/DString.3
index 8c6f516..a85b1cf 100644
--- a/doc/DString.3
+++ b/doc/DString.3
@@ -17,10 +17,10 @@ Tcl_DStringInit, Tcl_DStringAppend, Tcl_DStringAppendElement, Tcl_DStringStartSu
 \fBTcl_DStringInit\fR(\fIdsPtr\fR)
 .sp
 char *
-\fBTcl_DStringAppend\fR(\fIdsPtr, string, length\fR)
+\fBTcl_DStringAppend\fR(\fIdsPtr, bytes, length\fR)
 .sp
 char *
-\fBTcl_DStringAppendElement\fR(\fIdsPtr, string\fR)
+\fBTcl_DStringAppendElement\fR(\fIdsPtr, element\fR)
 .sp
 \fBTcl_DStringStartSublist\fR(\fIdsPtr\fR)
 .sp
@@ -42,13 +42,15 @@ char *
 .sp
 \fBTcl_DStringGetResult\fR(\fIinterp, dsPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_DString newLength
+.AS Tcl_DString newLength in/out
 .AP Tcl_DString *dsPtr in/out
 Pointer to structure that is used to manage a dynamic string.
-.AP "CONST char" *string in
-Pointer to characters to add to dynamic string.
+.AP "const char" *bytes in
+Pointer to characters to append to dynamic string.
+.AP "const char" *element in
+Pointer to characters to append as list element to dynamic string.
 .AP int length in
-Number of characters from string to add to dynamic string.  If -1,
+Number of bytes from \fIbytes\fR to add to dynamic string.  If -1,
 add all characters up to null terminating character.
 .AP int newLength in
 New length for dynamic string, not including null terminating
@@ -75,7 +77,7 @@ string.
 .PP
 \fBTcl_DStringAppend\fR adds new information to a dynamic string,
 allocating more memory for the string if needed.
-If \fIlength\fR is less than zero then everything in \fIstring\fR
+If \fIlength\fR is less than zero then everything in \fIbytes\fR
 is appended to the dynamic string;  otherwise \fIlength\fR
 specifies the number of bytes to append.
 \fBTcl_DStringAppend\fR returns a pointer to the characters of
@@ -83,14 +85,16 @@ the new string.  The string can also be retrieved from the
 \fIstring\fR field of the Tcl_DString structure.
 .PP
 \fBTcl_DStringAppendElement\fR is similar to \fBTcl_DStringAppend\fR
-except that it doesn't take a \fIlength\fR argument (it appends
-all of \fIstring\fR) and it converts the string to a proper list element
+except that it does not take a \fIlength\fR argument (it appends
+all of \fIelement\fR) and it converts the string to a proper list element
 before appending.
 \fBTcl_DStringAppendElement\fR adds a separator space before the
 new list element unless the new list element is the first in a
 list or sub-list (i.e. either the current string is empty, or it
-contains the single character ``{'', or the last two characters of
-the current string are `` {'').
+contains the single character
+.QW { ,
+or the last two characters of the current string are
+.QW " {" ).
 \fBTcl_DStringAppendElement\fR returns a pointer to the
 characters of the new string.
 .PP
@@ -128,7 +132,7 @@ will still need to be called.
 This procedure is now deprecated.  \fBTcl_DStringSetLength\fR  should
 be used instead.
 .PP
-\fBTcl_DStringFree\fR should be called when you're finished using
+\fBTcl_DStringFree\fR should be called when you are finished using
 the string.  It frees up any memory that was allocated for the string
 and reinitializes the string's value to an empty string.
 .PP
diff --git a/doc/DetachPids.3 b/doc/DetachPids.3
index 17b57eb..0535cd8 100644
--- a/doc/DetachPids.3
+++ b/doc/DetachPids.3
@@ -19,18 +19,18 @@ Tcl_DetachPids, Tcl_ReapDetachedProcs, Tcl_WaitPid \- manage child processes in
 \fBTcl_ReapDetachedProcs\fR()
 .sp
 Tcl_Pid
-\fBTcl_WaitPid\fR(\fIpid, statPtr, options\fR)
+\fBTcl_WaitPid\fR(\fIpid, statusPtr, options\fR)
 .SH ARGUMENTS
-.AS int *statusPtr
+.AS Tcl_Pid *statusPtr out
 .AP int numPids in
 Number of process ids contained in the array pointed to by \fIpidPtr\fR.
 .AP int *pidPtr in
 Address of array containing \fInumPids\fR process ids.
 .AP Tcl_Pid pid in
 The id of the process (pipe) to wait for.
-.AP int* statPtr out
+.AP int *statusPtr out
 The result of waiting on a process (pipe). Either 0 or ECHILD.
-.AP int options
+.AP int options in
 The options controlling the wait. WNOHANG specifies not to wait when
 checking the process.
 .BE
@@ -49,16 +49,16 @@ overflow, even if all the children have exited.
 \fBTcl_DetachPids\fR may be called to ask Tcl to take responsibility
 for one or more processes whose process ids are contained in the
 \fIpidPtr\fR array passed as argument.  The caller presumably
-has started these processes running in background and doesn't
+has started these processes running in background and does not
 want to have to deal with them again.
 .PP
 \fBTcl_ReapDetachedProcs\fR invokes the \fBwaitpid\fR kernel call
 on each of the background processes so that its state can be cleaned
-up if it has exited.  If the process hasn't exited yet,
-\fBTcl_ReapDetachedProcs\fR doesn't wait for it to exit;  it will check again
+up if it has exited.  If the process has not exited yet,
+\fBTcl_ReapDetachedProcs\fR does not wait for it to exit;  it will check again
 the next time it is invoked.
 Tcl automatically calls \fBTcl_ReapDetachedProcs\fR each time the
-\fBexec\fR command is executed, so in most cases it isn't necessary
+\fBexec\fR command is executed, so in most cases it is not necessary
 for any code outside of Tcl to invoke \fBTcl_ReapDetachedProcs\fR.
 However, if you call \fBTcl_DetachPids\fR in situations where the
 \fBexec\fR command may never get executed, you may wish to call
diff --git a/doc/DictObj.3 b/doc/DictObj.3
new file mode 100644
index 0000000..74b8dd1
--- /dev/null
+++ b/doc/DictObj.3
@@ -0,0 +1,234 @@
+'\"
+'\" Copyright (c) 2003 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH Tcl_DictObj 3 8.5 Tcl "Tcl Library Procedures"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+Tcl_NewDictObj, Tcl_DictObjPut, Tcl_DictObjGet, Tcl_DictObjRemove, Tcl_DictObjSize, Tcl_DictObjFirst, Tcl_DictObjNext, Tcl_DictObjDone, Tcl_DictObjPutKeyList, Tcl_DictObjRemoveKeyList \- manipulate Tcl objects as dictionaries
+.SH SYNOPSIS
+.nf
+\fB#include <tcl.h>\fR
+.sp
+Tcl_Obj *
+\fBTcl_NewDictObj\fR()
+.sp
+int
+\fBTcl_DictObjGet\fR(\fIinterp, dictPtr, keyPtr, valuePtrPtr\fR)
+.sp
+int
+\fBTcl_DictObjPut\fR(\fIinterp, dictPtr, keyPtr, valuePtr\fR)
+.sp
+int
+\fBTcl_DictObjRemove\fR(\fIinterp, dictPtr, keyPtr\fR)
+.sp
+int
+\fBTcl_DictObjSize\fR(\fIinterp, dictPtr, sizePtr\fR)
+.sp
+int
+\fBTcl_DictObjFirst\fR(\fIinterp, dictPtr, searchPtr,
+                 keyPtrPtr, valuePtrPtr, donePtr\fR)
+.sp
+void
+\fBTcl_DictObjNext\fR(\fIsearchPtr, keyPtrPtr, valuePtrPtr, donePtr\fR)
+.sp
+void
+\fBTcl_DictObjDone\fR(\fIsearchPtr\fR)
+.sp
+int
+\fBTcl_DictObjPutKeyList\fR(\fIinterp, dictPtr, keyc, keyv, valuePtr\fR)
+.sp
+int
+\fBTcl_DictObjRemoveKeyList\fR(\fIinterp, dictPtr, keyc, keyv\fR)
+.SH ARGUMENTS
+.AS Tcl_DictSearch "**valuePtrPtr" in/out
+.AP Tcl_Interp *interp in
+If an error occurs while converting an object to be a dictionary object,
+an error message is left in the interpreter's result object
+unless \fIinterp\fR is NULL.
+.AP Tcl_Obj *dictPtr in/out
+Points to the dictionary object to be manipulated.
+If \fIdictPtr\fR does not already point to a dictionary object,
+an attempt will be made to convert it to one.
+.AP Tcl_Obj *keyPtr in
+Points to the key for the key/value pair being manipulated within the
+dictionary object.
+.AP Tcl_Obj **keyPtrPtr out
+Points to a variable that will have the key from a key/value pair
+placed within it.  May be NULL to indicate that the caller is not
+interested in the key.
+.AP Tcl_Obj *valuePtr in
+Points to the value for the key/value pair being manipulate within the
+dictionary object (or sub-object, in the case of
+\fBTcl_DictObjPutKeyList\fR.)
+.AP Tcl_Obj **valuePtrPtr out
+Points to a variable that will have the value from a key/value pair
+placed within it.  For \fBTcl_DictObjFirst\fR and
+\fBTcl_DictObjNext\fR, this may be NULL to indicate that the caller is
+not interested in the value.
+.AP int *sizePtr out
+Points to a variable that will have the number of key/value pairs
+contained within the dictionary placed within it.
+.AP Tcl_DictSearch *searchPtr in/out
+Pointer to record to use to keep track of progress in enumerating all
+key/value pairs in a dictionary.  The contents of the record will be
+initialized by the call to \fBTcl_DictObjFirst\fR.  If the enumerating
+is to be terminated before all values in the dictionary have been
+returned, the search record \fImust\fR be passed to
+\fBTcl_DictObjDone\fR to enable the internal locks to be released.
+.AP int *donePtr out
+Points to a variable that will have a non-zero value written into it
+when the enumeration of the key/value pairs in a dictionary has
+completed, and a zero otherwise.
+.AP int keyc in
+Indicates the number of keys that will be supplied in the \fIkeyv\fR
+array.
+.AP "Tcl_Obj *const" *keyv in
+Array of \fIkeyc\fR pointers to objects that
+\fBTcl_DictObjPutKeyList\fR and \fBTcl_DictObjRemoveKeyList\fR will
+use to locate the key/value pair to manipulate within the
+sub-dictionaries of the main dictionary object passed to them.
+.BE
+
+.SH DESCRIPTION
+.PP
+Tcl dictionary objects have an internal representation that supports
+efficient mapping from keys to values and which guarantees that the
+particular ordering of keys within the dictionary remains the same
+modulo any keys being deleted (which removes them from the order) or
+added (which adds them to the end of the order). If reinterpreted as a
+list, the values at the even-valued indices in the list will be the
+keys of the dictionary, and each will be followed (in the odd-valued
+index) by the value associated with that key.
+.PP
+The procedures described in this man page are used to
+create, modify, index, and iterate over dictionary objects from C code.
+.PP
+\fBTcl_NewDictObj\fR creates a new, empty dictionary object.  The
+string representation of the object will be invalid, and the reference
+count of the object will be zero.
+.PP
+\fBTcl_DictObjGet\fR looks up the given key within the given
+dictionary and writes a pointer to the value associated with that key
+into the variable pointed to by \fIvaluePtrPtr\fR, or a NULL if the
+key has no mapping within the dictionary.  The result of this
+procedure is \fBTCL_OK\fR, or \fBTCL_ERROR\fR if the \fIdictPtr\fR cannot be
+converted to a dictionary.
+.PP
+\fBTcl_DictObjPut\fR updates the given dictionary so that the given
+key maps to the given value; any key may exist at most once in any
+particular dictionary.  The dictionary must not be shared, but the key
+and value may be.  This procedure may increase the reference count of
+both key and value if it proves necessary to store them.  Neither key
+nor value should be NULL.  The result of this procedure is \fBTCL_OK\fR, or
+\fBTCL_ERROR\fR if the \fIdictPtr\fR cannot be converted to a dictionary.
+.PP
+\fBTcl_DictObjRemove\fR updates the given dictionary so that the given
+key has no mapping to any value.  The dictionary must not be shared,
+but the key may be.  The key actually stored in the dictionary will
+have its reference count decremented if it was present.  It is not an
+error if the key did not previously exist.  The result of this
+procedure is \fBTCL_OK\fR, or \fBTCL_ERROR\fR if the \fIdictPtr\fR cannot be
+converted to a dictionary.
+.PP
+\fBTcl_DictObjSize\fR updates the given variable with the number of
+key/value pairs currently in the given dictionary. The result of this
+procedure is \fBTCL_OK\fR, or \fBTCL_ERROR\fR if the \fIdictPtr\fR cannot be
+converted to a dictionary.
+.PP
+\fBTcl_DictObjFirst\fR commences an iteration across all the key/value
+pairs in the given dictionary, placing the key and value in the
+variables pointed to by the \fIkeyPtrPtr\fR and \fIvaluePtrPtr\fR
+arguments (which may be NULL to indicate that the caller is
+uninterested in they key or variable respectively.)  The next
+key/value pair in the dictionary may be retrieved with
+\fBTcl_DictObjNext\fR.  Concurrent updates of the dictionary's
+internal representation will not modify the iteration processing
+unless the dictionary is unshared, when this will trigger premature
+termination of the iteration instead (which Tcl scripts cannot trigger
+via the \fBdict\fR command.)  The \fIsearchPtr\fR argument points to a
+piece of context that is used to identify which particular iteration
+is being performed, and is initialized by the call to
+\fBTcl_DictObjFirst\fR.  The \fIdonePtr\fR argument points to a
+variable that is updated to be zero of there are further key/value
+pairs to be iterated over, or non-zero if the iteration is complete.
+The order of iteration is implementation-defined.  If the
+\fIdictPtr\fR argument cannot be converted to a dictionary,
+\fBTcl_DictObjFirst\fR returns \fBTCL_ERROR\fR and the iteration is not
+commenced, and otherwise it returns \fBTCL_OK\fR.
+.PP
+When \fBTcl_DictObjFirst\fR is called upon a dictionary, a lock is placed on
+the dictionary to enable that dictionary to be iterated over safely without
+regard for whether the dictionary is modified during the iteration. Because of
+this, once the iteration over a dictionary's keys has finished (whether
+because all values have been iterated over as indicated by the variable
+indicated by the \fIdonePtr\fR argument being set to one, or because no
+further values are required) the \fBTcl_DictObjDone\fR function must be called
+with the same \fIsearchPtr\fR as was passed to \fBTcl_DictObjFirst\fR so that
+the internal locks can be released. Once a particular \fIsearchPtr\fR is
+passed to \fBTcl_DictObjDone\fR, passing it to \fBTcl_DictObjNext\fR (without
+first initializing it with \fBTcl_DictObjFirst\fR) will result in no values
+being produced and the variable pointed to by \fIdonePtr\fR being set to one.
+It is safe to call \fBTcl_DictObjDone\fR multiple times on the same
+\fIsearchPtr\fR for each call to \fBTcl_DictObjFirst\fR.
+.PP
+The procedures \fBTcl_DictObjPutKeyList\fR and
+\fBTcl_DictObjRemoveKeyList\fR are the close analogues of
+\fBTcl_DictObjPut\fR and \fBTcl_DictObjRemove\fR respectively, except
+that instead of working with a single dictionary, they are designed to
+operate on a nested tree of dictionaries, with inner dictionaries
+stored as values inside outer dictionaries.  The \fIkeyc\fR and
+\fIkeyv\fR arguments specify a list of keys (with outermost keys
+first) that acts as a path to the key/value pair to be affected.  Note
+that there is no corresponding operation for reading a value for a
+path as this is easy to construct from repeated use of
+\fBTcl_DictObjGet\fR. With \fBTcl_DictObjPutKeyList\fR, nested
+dictionaries are created for non-terminal keys where they do not
+already exist. With \fBTcl_DictObjRemoveKeyList\fR, all non-terminal
+keys must exist and have dictionaries as their values.
+.SH EXAMPLE
+Using the dictionary iteration interface to search determine if there
+is a key that maps to itself:
+.PP
+.CS
+Tcl_DictSearch search;
+Tcl_Obj *key, *value;
+int done;
+
+/*
+ * Assume interp and objPtr are parameters.  This is the
+ * idiomatic way to start an iteration over the dictionary; it
+ * sets a lock on the internal representation that ensures that
+ * there are no concurrent modification issues when normal
+ * reference count management is also used.  The lock is
+ * released automatically when the loop is finished, but must
+ * be released manually when an exceptional exit from the loop
+ * is performed. However it is safe to try to release the lock
+ * even if we've finished iterating over the loop.
+ */
+if (\fBTcl_DictObjFirst\fR(interp, objPtr, &search,
+        &key, &value, &done) != TCL_OK) {
+    return TCL_ERROR;
+}
+for (; !done ; \fBTcl_DictObjNext\fR(&search, &key, &value, &done)) {
+    /*
+     * Note that strcmp() is not a good way of comparing
+     * objects and is just used here for demonstration
+     * purposes.
+     */
+    if (!strcmp(Tcl_GetString(key), Tcl_GetString(value))) {
+        break;
+    }
+}
+\fBTcl_DictObjDone\fR(&search);
+Tcl_SetObjResult(interp, Tcl_NewBooleanObj(!done));
+return TCL_OK;
+.CE
+.SH "SEE ALSO"
+Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_InitObjHashTable
+.SH KEYWORDS
+dict, dict object, dictionary, dictionary object, hash table, iteration, object
diff --git a/doc/DoOneEvent.3 b/doc/DoOneEvent.3
index 058307d..9bdf926 100644
--- a/doc/DoOneEvent.3
+++ b/doc/DoOneEvent.3
@@ -21,9 +21,9 @@ int
 .AP int flags in
 This parameter is normally zero.  It may be an OR-ed combination
 of any of the following flag bits:  
-TCL_WINDOW_EVENTS,
-TCL_FILE_EVENTS, TCL_TIMER_EVENTS, TCL_IDLE_EVENTS, TCL_ALL_EVENTS, or
-TCL_DONT_WAIT.
+\fBTCL_WINDOW_EVENTS\fR, \fBTCL_FILE_EVENTS\fR,
+\fBTCL_TIMER_EVENTS\fR, \fBTCL_IDLE_EVENTS\fR, \fBTCL_ALL_EVENTS\fR,
+or \fBTCL_DONT_WAIT\fR.
 .BE
 
 .SH DESCRIPTION
@@ -71,7 +71,7 @@ Process all kinds of events:  equivalent to OR-ing together all of the
 above flags or specifying none of them.
 .TP 27
 \fBTCL_DONT_WAIT\fR \-
-Don't sleep:  process only events that are ready at the time of the
+Do not sleep:  process only events that are ready at the time of the
 call.
 .LP
 If any of the flags \fBTCL_WINDOW_EVENTS\fR, \fBTCL_FILE_EVENTS\fR,
diff --git a/doc/DoWhenIdle.3 b/doc/DoWhenIdle.3
index a15f1cb..bfc19fb 100644
--- a/doc/DoWhenIdle.3
+++ b/doc/DoWhenIdle.3
@@ -30,7 +30,7 @@ Arbitrary one-word value to pass to \fIproc\fR.
 \fBTcl_DoWhenIdle\fR arranges for \fIproc\fR to be invoked
 when the application becomes idle.  The application is
 considered to be idle when \fBTcl_DoOneEvent\fR has been
-called, couldn't find any events to handle, and is about
+called, could not find any events to handle, and is about
 to go to sleep waiting for an event to occur.  At this
 point all pending \fBTcl_DoWhenIdle\fR handlers are
 invoked.  For each call to \fBTcl_DoWhenIdle\fR there will
@@ -59,7 +59,7 @@ all of the handlers are removed.  If no existing handlers match
 \fIproc\fR and \fIclientData\fR then nothing happens.
 .PP
 \fBTcl_DoWhenIdle\fR is most useful in situations where
-(a) a piece of work will have to be done but (b) it's
+(a) a piece of work will have to be done but (b) it is
 possible that something will happen in the near future
 that will change what has to be done or require something
 different to be done.  \fBTcl_DoWhenIdle\fR allows the
diff --git a/doc/DoubleObj.3 b/doc/DoubleObj.3
index b65af58..12818b0 100644
--- a/doc/DoubleObj.3
+++ b/doc/DoubleObj.3
@@ -23,55 +23,42 @@ int
 .SH ARGUMENTS
 .AS Tcl_Interp doubleValue in/out
 .AP double doubleValue in
-A double-precision floating point value used to initialize or set a double object.
+A double-precision floating-point value used to initialize or set a Tcl object.
 .AP Tcl_Obj *objPtr in/out
-For \fBTcl_SetDoubleObj\fR, this points to the object to be converted
-to double type.
+For \fBTcl_SetDoubleObj\fR, this points to the object in which to store a
+double value.
 For \fBTcl_GetDoubleFromObj\fR, this refers to the object
-from which to get a double value; 
-if \fIobjPtr\fR does not already point to a double object,
-an attempt will be made to convert it to one.
+from which to retrieve a double value. 
 .AP Tcl_Interp *interp in/out
-If an error occurs during conversion,
-an error message is left in the interpreter's result object
-unless \fIinterp\fR is NULL.
+When non-NULL, an error message is left here when double value retrieval fails.
 .AP double *doublePtr out
-Points to place to store the double value
-obtained from \fIobjPtr\fR.
+Points to place to store the double value obtained from \fIobjPtr\fR.
 .BE
 
 .SH DESCRIPTION
 .PP
-These procedures are used to create, modify, and read
-double Tcl objects from C code.
-\fBTcl_NewDoubleObj\fR and \fBTcl_SetDoubleObj\fR
-will create a new object of double type
-or modify an existing object to have double type. 
-Both of these procedures set the object to have the
-double-precision floating point value given by \fIdoubleValue\fR;
-\fBTcl_NewDoubleObj\fR returns a pointer to a newly created object
-with reference count zero.
-Both procedures set the object's type to be double
-and assign the double value to the object's internal representation
-\fIdoubleValue\fR member.
-\fBTcl_SetDoubleObj\fR invalidates any old string representation
-and, if the object is not already a double object,
-frees any old internal representation.
+These procedures are used to create, modify, and read Tcl objects that
+hold double-precision floating-point values.
 .PP
-\fBTcl_GetDoubleFromObj\fR attempts to return a double value
-from the Tcl object \fIobjPtr\fR.
-If the object is not already a double object,
-it will attempt to convert it to one.
-If an error occurs during conversion, it returns \fBTCL_ERROR\fR
-and leaves an error message in the interpreter's result object
-unless \fIinterp\fR is NULL.
-Otherwise, it returns \fBTCL_OK\fR and stores the double value
-in the address given by \fIdoublePtr\fR.
-If the object is not already a double object,
-the conversion will free any old internal representation.
-
+\fBTcl_NewDoubleObj\fR creates and returns a new Tcl object initialized to
+the double value \fIdoubleValue\fR.  The returned Tcl object is unshared.
+.PP
+\fBTcl_SetDoubleObj\fR sets the value of an existing Tcl object pointed to
+by \fIobjPtr\fR to the double value \fIdoubleValue\fR.  The \fIobjPtr\fR
+argument must point to an unshared Tcl object.  Any attempt to set the value
+of a shared Tcl object violates Tcl's copy-on-write policy.  Any existing
+string representation or internal representation in the unshared Tcl object
+will be freed as a consequence of setting the new value.
+.PP
+\fBTcl_GetDoubleFromObj\fR attempts to retrieve a double value from the
+Tcl object \fIobjPtr\fR.  If the attempt succeeds, then \fBTCL_OK\fR is
+returned, and the double value is written to the storage pointed to by
+\fIdoublePtr\fR.  If the attempt fails, then \fBTCL_ERROR\fR is returned,
+and if \fIinterp\fR is non-NULL, an error message is left in \fIinterp\fR.
+The \fBTcl_ObjType\fR of \fIobjPtr\fR may be changed to make subsequent
+calls to \fBTcl_GetDoubleFromObj\fR more efficient. 
+'\" TODO: add discussion of treatment of NaN value
 .SH "SEE ALSO"
 Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult
-
 .SH KEYWORDS
 double, double object, double type, internal representation, object, object type, string representation
diff --git a/doc/DumpActiveMemory.3 b/doc/DumpActiveMemory.3
index 6e00eb3..1f6cb46 100644
--- a/doc/DumpActiveMemory.3
+++ b/doc/DumpActiveMemory.3
@@ -7,7 +7,7 @@
 .TH "Tcl_DumpActiveMemory" 3 8.1 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_DumpActiveMemory, Tcl_InitMemory, Tcl_ValidateAllMemory \- Validated memory allocation interface.
+Tcl_DumpActiveMemory, Tcl_InitMemory, Tcl_ValidateAllMemory \- Validated memory allocation interface
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -22,9 +22,10 @@ void
 \fBTcl_ValidateAllMemory\fR(\fIfileName, line\fR)
 
 .SH ARGUMENTS
+.AS Tcl_Interp *fileName
 .AP Tcl_Interp *interp in
 Tcl interpreter in which to add commands.
-.AP "CONST char" *fileName in
+.AP "const char" *fileName in
 For \fBTcl_DumpActiveMemory\fR, name of the file to which memory
 information will be written.  For \fBTcl_ValidateAllMemory\fR, name of
 the file from which the call is being made (normally \fB__FILE__\fR).
diff --git a/doc/Encoding.3 b/doc/Encoding.3
index 913d4fa..a940a5b 100644
--- a/doc/Encoding.3
+++ b/doc/Encoding.3
@@ -8,7 +8,7 @@
 .TH Tcl_GetEncoding 3 "8.1" Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_GetEncoding, Tcl_FreeEncoding, Tcl_ExternalToUtfDString, Tcl_ExternalToUtf, Tcl_UtfToExternalDString, Tcl_UtfToExternal, Tcl_WinTCharToUtf, Tcl_WinUtfToTChar, Tcl_GetEncodingName, Tcl_SetSystemEncoding, Tcl_GetEncodingNames, Tcl_CreateEncoding, Tcl_GetDefaultEncodingDir, Tcl_SetDefaultEncodingDir \- procedures for creating and using encodings.
+Tcl_GetEncoding, Tcl_FreeEncoding, Tcl_GetEncodingFromObj, Tcl_ExternalToUtfDString, Tcl_ExternalToUtf, Tcl_UtfToExternalDString, Tcl_UtfToExternal, Tcl_WinTCharToUtf, Tcl_WinUtfToTChar, Tcl_GetEncodingName, Tcl_SetSystemEncoding, Tcl_GetEncodingNameFromEnvironment, Tcl_GetEncodingNames, Tcl_CreateEncoding, Tcl_GetEncodingSearchPath, Tcl_SetEncodingSearchPath, Tcl_GetDefaultEncodingDir, Tcl_SetDefaultEncodingDir \- procedures for creating and using encodings
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -19,19 +19,24 @@ Tcl_Encoding
 void
 \fBTcl_FreeEncoding\fR(\fIencoding\fR)
 .sp
+.VS 8.5
+int
+\fBTcl_GetEncodingFromObj\fR(\fIinterp, objPtr, encodingPtr\fR)
+.VE 8.5
+.sp
 char *
 \fBTcl_ExternalToUtfDString\fR(\fIencoding, src, srcLen, dstPtr\fR)
 .sp
-int
-\fBTcl_ExternalToUtf\fR(\fIinterp, encoding, src, srcLen, flags, statePtr, dst, dstLen, srcReadPtr, dstWrotePtr, 
-	dstCharsPtr\fR)
-.sp
-char * 
+char *
 \fBTcl_UtfToExternalDString\fR(\fIencoding, src, srcLen, dstPtr\fR)
 .sp
 int
-\fBTcl_UtfToExternal\fR(\fIinterp, encoding, src, srcLen, flags, statePtr, dst, dstLen, srcReadPtr, dstWrotePtr, 
-	dstCharsPtr\fR)
+\fBTcl_ExternalToUtf\fR(\fIinterp, encoding, src, srcLen, flags, statePtr,
+                  dst, dstLen, srcReadPtr, dstWrotePtr, dstCharsPtr\fR)
+.sp
+int
+\fBTcl_UtfToExternal\fR(\fIinterp, encoding, src, srcLen, flags, statePtr,
+                  dst, dstLen, srcReadPtr, dstWrotePtr, dstCharsPtr\fR)
 .sp
 char *
 \fBTcl_WinTCharToUtf\fR(\fItsrc, srcLen, dstPtr\fR)
@@ -39,41 +44,60 @@ char *
 TCHAR *
 \fBTcl_WinUtfToTChar\fR(\fIsrc, srcLen, dstPtr\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_GetEncodingName\fR(\fIencoding\fR)
 .sp
 int
 \fBTcl_SetSystemEncoding\fR(\fIinterp, name\fR)
 .sp
+.VS 8.5
+const char *
+\fBTcl_GetEncodingNameFromEnvironment\fR(\fIbufPtr\fR)
+.VE 8.5
+.sp
 void
 \fBTcl_GetEncodingNames\fR(\fIinterp\fR)
 .sp
 Tcl_Encoding
 \fBTcl_CreateEncoding\fR(\fItypePtr\fR)
 .sp
-CONST char *
+.VS 8.5
+Tcl_Obj *
+\fBTcl_GetEncodingSearchPath\fR()
+.sp
+int
+\fBTcl_SetEncodingSearchPath\fR(\fIsearchPath\fR)
+.VE 8.5
+.sp
+const char *
 \fBTcl_GetDefaultEncodingDir\fR(\fIvoid\fR)
 .sp
 void
 \fBTcl_SetDefaultEncodingDir\fR(\fIpath\fR)
-
-
 .SH ARGUMENTS
-.AS Tcl_EncodingState *dstWrotePtr
+.AS "const Tcl_EncodingType" *dstWrotePtr in/out
 .AP Tcl_Interp *interp in
 Interpreter to use for error reporting, or NULL if no error reporting is
 desired.
-.AP "CONST char" *name in
+.AP "const char" *name in
 Name of encoding to load.
 .AP Tcl_Encoding encoding in
 The encoding to query, free, or use for converting text.  If \fIencoding\fR is 
 NULL, the current system encoding is used.
-.AP "CONST char" *src in
+.AP Tcl_Obj *objPtr in
+.VS 8.5
+Name of encoding to get token for.
+.VE 8.5
+.AP Tcl_Encoding *encodingPtr out
+.VS 8.5
+Points to storage where encoding token is to be written.
+.VE 8.5
+.AP "const char" *src in
 For the \fBTcl_ExternalToUtf\fR functions, an array of bytes in the
 specified encoding that are to be converted to UTF-8.  For the
 \fBTcl_UtfToExternal\fR and \fBTcl_WinUtfToTChar\fR functions, an array of
 UTF-8 characters to be converted to the specified encoding.  
-.AP "CONST TCHAR" *tsrc in
+.AP "const TCHAR" *tsrc in
 An array of Windows TCHAR characters to convert to UTF-8.
 .AP int srcLen in 
 Length of \fIsrc\fR or \fItsrc\fR in bytes.  If the length is negative, the 
@@ -83,21 +107,21 @@ Pointer to an uninitialized or free \fBTcl_DString\fR in which the converted
 result will be stored.
 .AP int flags in
 Various flag bits OR-ed together.  
-TCL_ENCODING_START signifies that the
+\fBTCL_ENCODING_START\fR signifies that the
 source buffer is the first block in a (potentially multi-block) input
 stream, telling the conversion routine to reset to an initial state and
 perform any initialization that needs to occur before the first byte is
-converted.  TCL_ENCODING_END signifies that the source buffer is the last
+converted. \fBTCL_ENCODING_END\fR signifies that the source buffer is the last
 block in a (potentially multi-block) input stream, telling the conversion
 routine to perform any finalization that needs to occur after the last
 byte is converted and then to reset to an initial state.
-TCL_ENCODING_STOPONERROR signifies that the conversion routine should
-return immediately upon reading a source character that doesn't exist in
+\fBTCL_ENCODING_STOPONERROR\fR signifies that the conversion routine should
+return immediately upon reading a source character that does not exist in
 the target encoding; otherwise a default fallback character will
 automatically be substituted.  
 .AP Tcl_EncodingState *statePtr in/out
 Used when converting a (generally long or indefinite length) byte stream
-in a piece by piece fashion.  The conversion routine stores its current
+in a piece-by-piece fashion.  The conversion routine stores its current
 state in \fI*statePtr\fR after \fIsrc\fR (the buffer containing the
 current piece) has been converted; that state information must be passed
 back when converting the next piece of the stream so the conversion
@@ -120,9 +144,17 @@ buffer as a result of the conversion.  May be NULL.
 .AP int *dstCharsPtr out
 Filled with the number of characters that correspond to the number of bytes
 stored in the output buffer.  May be NULL.
-.AP Tcl_EncodingType *typePtr in
+.AP Tcl_DString *bufPtr out
+.VS 8.5
+Storage for the prescribed system encoding name.
+.VE 8.5
+.AP "const Tcl_EncodingType" *typePtr in
 Structure that defines a new type of encoding.  
-.AP "CONST char" *path in
+.AP Tcl_Obj *searchPath in
+.VS 8.5
+List of filesystem directories in which to search for encoding data files.
+.VE 8.5
+.AP "const char" *path in
 A path to the location of the encoding file.  
 .BE
 .SH INTRODUCTION
@@ -149,7 +181,7 @@ platform-independent manner.
 .SH DESCRIPTION
 .PP
 \fBTcl_GetEncoding\fR finds an encoding given its \fIname\fR.  The name may
-refer to a builtin Tcl encoding, a user-defined encoding registered by
+refer to a built-in Tcl encoding, a user-defined encoding registered by
 calling \fBTcl_CreateEncoding\fR, or a dynamically-loadable encoding
 file.  The return value is a token that represents the encoding and can be
 used in subsequent calls to procedures such as \fBTcl_GetEncodingName\fR,
@@ -170,6 +202,20 @@ anywhere (i.e., it has been freed as many times as it has been gotten)
 \fBTcl_FreeEncoding\fR will release all storage the encoding was using
 and delete it from the database. 
 .PP
+.VS 8.5
+\fBTcl_GetEncodingFromObj\fR treats the string representation of
+\fIobjPtr\fR as an encoding name, and finds an encoding with that
+name, just as \fBTcl_GetEncoding\fR does. When an encoding is found,
+it is cached within the \fBobjPtr\fR value for future reference, the
+\fBTcl_Encoding\fR token is written to the storage pointed to by
+\fIencodingPtr\fR, and the value \fBTCL_OK\fR is returned. If no such
+encoding is found, the value \fBTCL_ERROR\fR is returned, and no
+writing to \fB*\fR\fIencodingPtr\fR takes place. Just as with
+\fBTcl_GetEncoding\fR, the caller should call \fBTcl_FreeEncoding\fR
+on the resulting encoding token when that token will no longer be
+used.
+.VE 8.5
+.PP
 \fBTcl_ExternalToUtfDString\fR converts a source buffer \fIsrc\fR from the
 specified \fIencoding\fR into UTF-8.  The converted bytes are stored in 
 \fIdstPtr\fR, which is then null-terminated.  The caller should eventually
@@ -192,7 +238,7 @@ All bytes of \fIsrc\fR were converted.
 The destination buffer was not large enough for all of the converted data; as
 many characters as could fit were converted though.
 .IP \fBTCL_CONVERT_MULTIBYTE\fR 29
-The last fews bytes in the source buffer were the beginning of a multibyte
+The last few bytes in the source buffer were the beginning of a multibyte
 sequence, but more bytes were needed to complete this sequence.  A
 subsequent call to the conversion routine should pass a buffer containing
 the unconverted bytes that remained in \fIsrc\fR plus some further bytes
@@ -204,7 +250,7 @@ if the input stream has been damaged or if the input encoding method was
 misidentified.
 .IP \fBTCL_CONVERT_UNKNOWN\fR 29
 The source buffer contained a character that could not be represented in
-the target encoding and TCL_ENCODING_STOPONERROR was specified.  
+the target encoding and \fBTCL_ENCODING_STOPONERROR\fR was specified.  
 .RE
 .LP
 \fBTcl_UtfToExternalDString\fR converts a source buffer \fIsrc\fR from UTF-8 
@@ -228,19 +274,26 @@ is filled with the corresponding number of bytes that were stored in
 \fBTcl_WinUtfToTChar\fR and \fBTcl_WinTCharToUtf\fR are
 Windows-only convenience
 functions for converting between UTF-8 and Windows strings.  On Windows 95
-(as with the Macintosh and Unix operating systems),
-all strings exchanged between Tcl and the operating system are "char"
+(as with the Unix operating system),
+all strings exchanged between Tcl and the operating system are
+.QW "char"
 based.  On Windows NT, some strings exchanged between Tcl and the
-operating system are "char" oriented while others are in Unicode.  By
+operating system are
+.QW "char"
+oriented while others are in Unicode.  By
 convention, in Windows a TCHAR is a character in the ANSI code page
 on Windows 95 and a Unicode character on Windows NT.
 .PP
-If you planned to use the same "char" based interfaces on both Windows
+If you planned to use the same
+.QW "char"
+based interfaces on both Windows
 95 and Windows NT, you could use \fBTcl_UtfToExternal\fR and
 \fBTcl_ExternalToUtf\fR (or their \fBTcl_DString\fR equivalents) with an
 encoding of NULL (the current system encoding).  On the other hand,
 if you planned to use the Unicode interface when running on Windows NT
-and the "char" interfaces when running on Windows 95, you would have
+and the
+.QW "char"
+interfaces when running on Windows 95, you would have
 to perform the following type of test over and over in your program
 (as represented in pseudo-code):
 .CS
@@ -250,6 +303,7 @@ if (running NT) {
     Tcl_FreeEncoding(encoding);
 } else {
     nativeBuffer <- Tcl_UtfToExternal(NULL, utfBuffer);
+}
 .CE
 \fBTcl_WinUtfToTChar\fR and \fBTcl_WinTCharToUtf\fR automatically
 handle this test and use the proper encoding based on the current
@@ -269,11 +323,20 @@ was used to create the encoding.  The string returned by
 whenever the user passes a NULL value for the \fIencoding\fR argument to
 any of the other encoding functions.  If \fIname\fR is NULL, the system
 encoding is reset to the default system encoding, \fBbinary\fR.  If the
-name did not refer to any known or loadable encoding, TCL_ERROR is
+name did not refer to any known or loadable encoding, \fBTCL_ERROR\fR is
 returned and an error message is left in \fIinterp\fR.  Otherwise, this
 procedure increments the reference count of the new system encoding,
 decrements the reference count of the old system encoding, and returns
-TCL_OK.
+\fBTCL_OK\fR.
+.PP
+.VS 8.5
+\fBTcl_GetEncodingNameFromEnvironment\fR provides a means for the Tcl
+library to report the encoding name it believes to be the correct one
+to use as the system encoding, based on system calls and examination of
+the environment suitable for the platform.  It accepts \fIbufPtr\fR,
+a pointer to an uninitialized or freed \fBTcl_DString\fR and writes
+the encoding name to it.  The \fBTcl_DStringValue\fR is returned.
+.VE 8.5
 .PP
 \fBTcl_GetEncodingNames\fR sets the \fIinterp\fR result to a list
 consisting of the names of all the encodings that are currently defined
@@ -301,12 +364,12 @@ convert between this encoding and UTF-8.  It is defined as follows:
 .PP
 .CS
 typedef struct Tcl_EncodingType {
-	CONST char *\fIencodingName\fR;
-	Tcl_EncodingConvertProc *\fItoUtfProc\fR;
-	Tcl_EncodingConvertProc *\fIfromUtfProc\fR;
-	Tcl_EncodingFreeProc *\fIfreeProc\fR;
-	ClientData \fIclientData\fR;
-	int \fInullSize\fR;
+        const char *\fIencodingName\fR;
+        Tcl_EncodingConvertProc *\fItoUtfProc\fR;
+        Tcl_EncodingConvertProc *\fIfromUtfProc\fR;
+        Tcl_EncodingFreeProc *\fIfreeProc\fR;
+        ClientData \fIclientData\fR;
+        int \fInullSize\fR;
 } Tcl_EncodingType;  
 .CE
 .PP
@@ -336,16 +399,16 @@ type \fBTcl_EncodingConvertProc\fR:
 .PP
 .CS
 typedef int Tcl_EncodingConvertProc(
-	ClientData \fIclientData\fR,
-	CONST char *\fIsrc\fR, 
-	int \fIsrcLen\fR, 
-	int \fIflags\fR, 
-	Tcl_Encoding *\fIstatePtr\fR,
-	char *\fIdst\fR, 
-	int \fIdstLen\fR, 
-	int *\fIsrcReadPtr\fR,
-	int *\fIdstWrotePtr\fR,
-	int *\fIdstCharsPtr\fR);
+        ClientData \fIclientData\fR,
+        const char *\fIsrc\fR, 
+        int \fIsrcLen\fR, 
+        int \fIflags\fR, 
+        Tcl_EncodingState *\fIstatePtr\fR,
+        char *\fIdst\fR, 
+        int \fIdstLen\fR, 
+        int *\fIsrcReadPtr\fR,
+        int *\fIdstWrotePtr\fR,
+        int *\fIdstCharsPtr\fR);
 .CE
 .PP
 The \fItoUtfProc\fR and \fIfromUtfProc\fR procedures are called by the
@@ -367,20 +430,42 @@ The callback procedure \fIfreeProc\fR, if non-NULL, should match the type
 \fBTcl_EncodingFreeProc\fR:
 .CS
 typedef void Tcl_EncodingFreeProc(
-	ClientData \fIclientData\fR);
+        ClientData \fIclientData\fR);
 .CE
 .PP
 This \fIfreeProc\fR function is called when the encoding is deleted.  The
 \fIclientData\fR parameter is the same as the \fIclientData\fR field
 specified to \fBTcl_CreateEncoding\fR when the encoding was created.  
 .PP
-
+.VS 8.5
+\fBTcl_GetEncodingSearchPath\fR and \fBTcl_SetEncodingSearchPath\fR
+are called to access and set the list of filesystem directories searched
+for encoding data files.  
+.PP
+The value returned by \fBTcl_GetEncodingSearchPath\fR
+is the value stored by the last successful call to
+\fBTcl_SetEncodingSearchPath\fR.  If no calls to
+\fBTcl_SetEncodingSearchPath\fR have occurred, Tcl will compute an initial
+value based on the environment.  There is one encoding search path for the
+entire process, shared by all threads in the process.
+.PP
+\fBTcl_SetEncodingSearchPath\fR stores \fIsearchPath\fR and returns
+\fBTCL_OK\fR, unless \fIsearchPath\fR is not a valid Tcl list, which
+causes \fBTCL_ERROR\fR to be returned.  The elements of \fIsearchPath\fR
+are not verified as existing readable filesystem directories.  When
+searching for encoding data files takes place, and non-existent or
+non-readable filesystem directories on the \fIsearchPath\fR are silently
+ignored.
+.PP
 \fBTcl_GetDefaultEncodingDir\fR and \fBTcl_SetDefaultEncodingDir\fR
-access and set the directory to use when locating the default encoding
-files.  If this value is not NULL, the \fBTclpInitLibraryPath\fR routine
-appends the path to the head of the search path, and uses this path as
-the first place to look into when trying to locate the encoding file.
-
+are obsolete interfaces best replaced with calls to
+\fBTcl_GetEncodingSearchPath\fR and \fBTcl_SetEncodingSearchPath\fR.
+They are called to access and set the first element of the \fIsearchPath\fR
+list.  Since Tcl searches \fIsearchPath\fR for encoding data files in
+list order, these routines establish the
+.QW default
+directory in which to find encoding data files.
+.VE 8.5
 .SH "ENCODING FILES"
 Space would prohibit precompiling into Tcl every possible encoding
 algorithm, so many encodings are stored on disk as dynamically-loadable
@@ -392,23 +477,25 @@ external encoding may consist of single-byte, multi-byte, or double-byte
 characters.  
 .PP
 Each dynamically-loadable encoding is represented as a text file.  The
-initial line of the file, beginning with a ``#'' symbol, is a comment
+initial line of the file, beginning with a
+.QW #
+symbol, is a comment
 that provides a human-readable description of the file.  The next line
 identifies the type of encoding file.  It can be one of the following
 letters:
-.IP "[1]   \fBS\fR"
+.IP "[1] \fBS\fR"
 A single-byte encoding, where one character is always one byte long in the
 encoding.  An example is \fBiso8859-1\fR, used by many European languages.
-.IP "[2]   \fBD\fR"
+.IP "[2] \fBD\fR"
 A double-byte encoding, where one character is always two bytes long in the
 encoding.  An example is \fBbig5\fR, used for Chinese text.
-.IP "[3]   \fBM\fR"
+.IP "[3] \fBM\fR"
 A multi-byte encoding, where one character may be either one or two bytes long.
-Certain bytes are a lead bytes, indicating that another byte must follow
+Certain bytes are lead bytes, indicating that another byte must follow
 and that together the two bytes represent one character.  Other bytes are not
 lead bytes and represent themselves.  An example is \fBshiftjis\fR, used by
 many Japanese computers.
-.IP "[4]   \fBE\fR"
+.IP "[4] \fBE\fR"
 An escape-sequence encoding, specifying that certain sequences of bytes
 do not represent characters, but commands that describe how following bytes
 should be interpreted.  
@@ -478,7 +565,7 @@ and 0x8163 in \fBshiftjis\fR map to 203E and 2026 in Unicode, respectively.
 Following the first page will be all the other pages, each in the same
 format as the first: one number identifying the page followed by 256
 double-byte Unicode characters.  If a character in the encoding maps to the
-Unicode character 0000, it means that the character doesn't actually exist.
+Unicode character 0000, it means that the character does not actually exist.
 If all characters on a page would map to 0000, that page can be omitted.
 .PP
 Case [4] is the escape-sequence encoding file.  The lines in an this type of
@@ -490,13 +577,13 @@ encoding:
 E
 init		{}
 final		{}
-iso8859-1	\\x1b(B
-jis0201		\\x1b(J
-jis0208		\\x1b$@
-jis0208		\\x1b$B
-jis0212		\\x1b$(D
-gb2312		\\x1b$A
-ksc5601		\\x1b$(C
+iso8859-1	\ex1b(B
+jis0201		\ex1b(J
+jis0208		\ex1b$@
+jis0208		\ex1b$B
+jis0212		\ex1b$(D
+gb2312		\ex1b$A
+ksc5601		\ex1b$(C
 .CE
 .PP
 In the file, the first column represents an option and the second column
@@ -505,16 +592,16 @@ the first character is converted, while \fBfinal\fR is a string to emit
 or expect after the last character.  All other options are names of
 table-based encodings; the associated value is the escape-sequence that
 marks that encoding.  Tcl syntax is used for the values; in the above
-example, for instance, ``\fB{}\fR'' represents the empty string and
-``\fB\\x1b\fR'' represents character 27.
+example, for instance,
+.QW \fB{}\fR
+represents the empty string and
+.QW \fB\ex1b\fR
+represents character 27.
 .PP
 When \fBTcl_GetEncoding\fR encounters an encoding \fIname\fR that has not
 been loaded, it attempts to load an encoding file called \fIname\fB.enc\fR
-from the \fBencoding\fR subdirectory of each directory specified in the
-library path \fB$tcl_libPath\fR.  If the encoding file exists, but is
+from the \fBencoding\fR subdirectory of each directory that Tcl searches
+for its script library.  If the encoding file exists, but is
 malformed, an error message will be left in \fIinterp\fR.
 .SH KEYWORDS
 utf, encoding, convert
-
-
-
diff --git a/doc/Ensemble.3 b/doc/Ensemble.3
new file mode 100644
index 0000000..bc743c2
--- /dev/null
+++ b/doc/Ensemble.3
@@ -0,0 +1,188 @@
+'\"
+'\" Copyright (c) 2005 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+'\" This documents the C API introduced in TIP#235
+'\" 
+.so man.macros
+.TH Tcl_Ensemble 3 8.5 Tcl "Tcl Library Procedures"
+.BS
+.SH NAME
+Tcl_CreateEnsemble, Tcl_FindEnsemble, Tcl_GetEnsembleFlags, Tcl_GetEnsembleMappingDict, Tcl_GetEnsembleNamespace, Tcl_GetEnsembleUnknownHandler, Tcl_GetEnsembleSubcommandList, Tcl_IsEnsemble, Tcl_SetEnsembleFlags, Tcl_SetEnsembleMappingDict, Tcl_SetEnsembleSubcommandList, Tcl_SetEnsembleUnknownHandler \- manipulate ensemble commands
+.SH SYNOPSIS
+.nf
+\fB#include <tcl.h>\fR
+.sp
+Tcl_Command
+\fBTcl_CreateEnsemble\fR(\fIinterp, name, namespacePtr, ensFlags\fR)
+.sp
+Tcl_Command
+\fBTcl_FindEnsemble\fR(\fIinterp, cmdNameObj, flags\fR)
+.sp
+int
+\fBTcl_IsEnsemble\fR(\fItoken\fR)
+.sp
+int
+\fBTcl_GetEnsembleFlags\fR(\fIinterp, token, ensFlagsPtr\fR)
+.sp
+int
+\fBTcl_SetEnsembleFlags\fR(\fIinterp, token, ensFlags\fR)
+.sp
+int
+\fBTcl_GetEnsembleMappingDict\fR(\fIinterp, token, dictObjPtr\fR)
+.sp
+int
+\fBTcl_SetEnsembleMappingDict\fR(\fIinterp, token, dictObj\fR)
+.sp
+int
+\fBTcl_GetEnsembleSubcommandList\fR(\fIinterp, token, listObjPtr\fR)
+.sp
+int
+\fBTcl_SetEnsembleSubcommandList\fR(\fIinterp, token, listObj\fR)
+.sp
+int
+\fBTcl_GetEnsembleUnknownHandler\fR(\fIinterp, token, listObjPtr\fR)
+.sp
+int
+\fBTcl_SetEnsembleUnknownHandler\fR(\fIinterp, token, listObj\fR)
+.sp
+int
+\fBTcl_GetEnsembleNamespace\fR(\fIinterp, token, namespacePtrPtr\fR)
+.SH ARGUMENTS
+.AS Tcl_Namespace **namespacePtrPtr in/out
+.AP Tcl_Interp *interp in/out
+The interpreter in which the ensemble is to be created or found. Also
+where error result messages are written. The functions whose names
+start with \fBTcl_GetEnsemble\fR may have a NULL for the \fIinterp\fR,
+but all other functions must not.
+.AP "const char" *name in
+The name of the ensemble command to be created.
+.AP Tcl_Namespace *namespacePtr in
+The namespace to which the ensemble command is to be bound, or NULL
+for the current namespace.
+.AP int ensFlags in
+An ORed set of flag bits describing the basic configuration of the
+ensemble. Currently only one bit has meaning, TCL_ENSEMBLE_PREFIX,
+which is present when the ensemble command should also match
+unambiguous prefixes of subcommands.
+.AP Tcl_Obj *cmdNameObj in
+A value holding the name of the ensemble command to look up.
+.AP int flags in
+An ORed set of flag bits controlling the behavior of
+\fBTcl_FindEnsemble\fR. Currently only TCL_LEAVE_ERR_MSG is supported.
+.AP Tcl_Command token in
+A normal command token that refers to an ensemble command, or which
+you wish to use for testing as an ensemble command in \fBTcl_IsEnsemble\fR.
+.AP int *ensFlagsPtr out
+Pointer to a variable into which to write the current ensemble flag
+bits; currently only the bit TCL_ENSEMBLE_PREFIX is defined.
+.AP Tcl_Obj *dictObj in
+A dictionary value to use for the subcommand to implementation command
+prefix mapping dictionary in the ensemble. May be NULL if the mapping
+dictionary is to be removed.
+.AP Tcl_Obj **dictObjPtr out
+Pointer to a variable into which to write the current ensemble mapping
+dictionary.
+.AP Tcl_Obj *listObj in
+A list value to use for the defined list of subcommands in the
+dictionary or the unknown subcommmand handler command prefix. May be
+NULL if the subcommand list or unknown handler are to be removed.
+.AP Tcl_Obj **listObjPtr out
+Pointer to a variable into which to write the current defiend list of
+subcommands or the current unknown handler prefix.
+.AP Tcl_Namespace **namespacePtrPtr out
+Pointer to a variable into which to write the handle of the namespace
+to which the ensemble is bound.
+.BE
+
+.SH DESCRIPTION
+An ensemble is a command, bound to some namespace, which consists of a
+collection of subcommands implemented by other Tcl commands. The first
+argument to the ensemble command is always interpreted as a selector
+that states what subcommand to execute.
+.PP
+Ensembles are created using \fBTcl_CreateEnsemble\fR, which takes four
+arguments: the interpreter to work within, the name of the ensemble to
+create, the namespace within the interpreter to bind the ensemble to,
+and the default set of ensemble flags. The result of the function is
+the command token for the ensemble, which may be used to further
+configure the ensemble using the API described below in \fBENSEMBLE
+PROPERTIES\fR.
+.PP
+Given the name of an ensemble command, the token for that command may
+be retrieved using \fBTcl_FindEnsemble\fR. If the given command name
+(in \fIcmdNameObj\fR) does not refer to an ensemble command, the
+result of the function is NULL and (if the TCL_LEAVE_ERR_MSG bit is
+set in \fIflags\fR) an error message is left in the interpreter
+result.
+.PP
+A command token may be checked to see if it refers to an ensemble
+using \fBTcl_IsEnsemble\fR. This returns 1 if the token refers to an
+ensemble, or 0 otherwise.
+.SS "ENSEMBLE PROPERTIES"
+Every ensemble has four read-write properties and a read-only
+property. The properties are:
+.TP
+\fBflags\fR (read-write)
+The set of flags for the ensemble, expressed as a
+bit-field. Currently, the only public flag is TCL_ENSEMBLE_PREFIX
+which is set when unambiguous prefixes of subcommands are permitted to
+be resolved to implementations as well as exact matches. The flags may
+be read and written using \fBTcl_GetEnsembleFlags\fR and
+\fBTcl_SetEnsembleFlags\fR respectively. The result of both of those
+functions is a Tcl result code (TCL_OK, or TCL_ERROR if the token does
+not refer to an ensemble).
+.TP
+\fBmapping dictionary\fR (read-write)
+A dictionary containing a mapping from subcommand names to lists of
+words to use as a command prefix (replacing the first two words of the
+command which are the ensemble command itself and the subcommand
+name), or NULL if every subcommand is to be mapped to the command with
+the same unqualified name in the ensemble's bound namespace. Defaults
+to NULL. May be read and written using
+\fBTcl_GetEnsembleMappingDict\fR and \fBTcl_SetEnsembleMappingDict\fR
+respectively. The result of both of those functions is a Tcl result
+code (TCL_OK, or TCL_ERROR if the token does not refer to an
+ensemble) and the dictionary obtained from
+\fBTcl_GetEnsembleMappingDict\fR should always be treated as immutable
+even if it is unshared.
+All command names in prefixes set via \fBTcl_SetEnsembleMappingDict\fR
+must be fully qualified.
+.TP
+\fBsubcommand list\fR (read-write)
+A list of all the subcommand names for the ensemble, or NULL if this
+is to be derived from either the keys of the mapping dictionary (see
+above) or (if that is also NULL) from the set of commands exported by
+the bound namespace. May be read and written using
+\fBTcl_GetEnsembleSubcommandList\fR and
+\fBTcl_SetEnsembleSubcommandList\fR respectively. The result of both
+of those functions is a Tcl result code (TCL_OK, or TCL_ERROR if the
+token does not refer to an ensemble) and the list obtained from
+\fBTcl_GetEnsembleSubcommandList\fR should always be treated as
+immutable even if it is unshared.
+.TP
+\fBunknown subcommand handler command prefix\fR (read-write)
+A list of words to prepend on the front of any subcommand when the
+subcommand is unknown to the ensemble (according to the current prefix
+handling rule); see the \fBnamespace ensemble\fR command for more
+details. If NULL, the default behavior \- generate a suitable error
+message \- will be used when an unknown subcommand is encountered. May
+be read and written using \fBTcl_GetEnsembleUnknownHandler\fR and
+\fBTcl_SetEnsembleUnknownHandler\fR respectively. The result of both
+functions is a Tcl result code (TCL_OK, or TCL_ERROR if the token does
+not refer to an ensemble) and the list obtained from
+\fBTcl_GetEnsembleUnknownHandler\fR should always be treated as
+immutable even if it is unshared.
+.TP
+\fBbound namespace\fR (read-only)
+The namespace to which the ensemble is bound; when the namespace is
+deleted, so too will the ensemble, and this namespace is also the
+namespace whose list of exported commands is used if both the mapping
+dictionary and the subcommand list properties are NULL. May be read
+using \fBTcl_GetEnsembleNamespace\fR which returns a Tcl result code
+(TCL_OK, or TCL_ERROR if the token does not refer to an ensemble).
+
+.SH "SEE ALSO"
+namespace(n), Tcl_DeleteCommandFromToken(3)
diff --git a/doc/Environment.3 b/doc/Environment.3
index 7f92d48..3753f43 100644
--- a/doc/Environment.3
+++ b/doc/Environment.3
@@ -14,21 +14,25 @@ Tcl_PutEnv \- procedures to manipulate the environment
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_PutEnv\fR(\fIstring\fR)
+\fBTcl_PutEnv\fR(\fIassignment\fR)
 .SH ARGUMENTS
-.AP "CONST char" *string in
-Info about environment variable in the form NAME=value.
-The \fIstring\fR argument is in the system encoding.
+.AS "const char" *assignment
+.AP "const char" *assignment in
+Info about environment variable in the format
+.QW \fINAME\fB=\fIvalue\fR .
+The \fIassignment\fR argument is in the system encoding.
 .BE
-
 .SH DESCRIPTION
 .PP
 \fBTcl_PutEnv\fR sets an environment variable. The information is
-passed in a single string of the form NAME=value.  This procedure is
+passed in a single string of the form
+.QW \fINAME\fB=\fIvalue\fR .
+This procedure is
 intended to be a stand-in for the UNIX \fBputenv\fR system call. All
-tcl-based applications using \fBputenv\fR should redefine it to
+Tcl-based applications using \fBputenv\fR should redefine it to
 \fBTcl_PutEnv\fR so that they will interface properly to the Tcl
 runtime.
-
+.SH "SEE ALSO"
+tclvars(n)
 .SH KEYWORDS
 environment, variable
diff --git a/doc/Eval.3 b/doc/Eval.3
index 1efe270..f232cad 100644
--- a/doc/Eval.3
+++ b/doc/Eval.3
@@ -15,7 +15,6 @@ Tcl_EvalObjEx, Tcl_EvalFile, Tcl_EvalObjv, Tcl_Eval, Tcl_EvalEx, Tcl_GlobalEval,
 .nf
 \fB#include <tcl.h>\fR
 .sp
-.VS
 int
 \fBTcl_EvalObjEx\fR(\fIinterp, objPtr, flags\fR)
 .sp
@@ -38,12 +37,12 @@ int
 \fBTcl_GlobalEvalObj\fR(\fIinterp, objPtr\fR)
 .sp
 int
-\fBTcl_VarEval\fR(\fIinterp, string, string, ... \fB(char *) NULL\fR)
+\fBTcl_VarEval\fR(\fIinterp, part, part, ... \fB(char *) NULL\fR)
 .sp
 int
 \fBTcl_VarEvalVA\fR(\fIinterp, argList\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp **termPtr;
+.AS Tcl_Interp **termPtr
 .AP Tcl_Interp *interp in
 Interpreter in which to execute the script.  The interpreter's result is
 modified to hold the result or error message from the script.
@@ -52,7 +51,7 @@ A Tcl object containing the script to execute.
 .AP int flags in
 ORed combination of flag bits that specify additional options.
 \fBTCL_EVAL_GLOBAL\fR and \fBTCL_EVAL_DIRECT\fR are currently supported.
-.AP "CONST char" *fileName in
+.AP "const char" *fileName in
 Name of a file containing a Tcl script.
 .AP int objc in
 The number of objects in the array pointed to by \fIobjPtr\fR;
@@ -64,13 +63,13 @@ value of a single word in the command to execute.
 The number of bytes in \fIscript\fR, not including any
 null terminating character.  If \-1, then all characters up to the
 first null byte are used.
-.AP "CONST char" *script in
+.AP "const char" *script in
 Points to first byte of script to execute (null-terminated and UTF-8).
-.AP char *string in
+.AP char *part in
 String forming part of a Tcl script.
 .AP va_list argList in
-An argument list which must have been initialised using
-\fBTCL_VARARGS_START\fR, and cleared using \fBva_end\fR.
+An argument list which must have been initialized using
+\fBva_start\fR, and cleared using \fBva_end\fR.
 .BE
 
 .SH DESCRIPTION
@@ -97,26 +96,33 @@ result; it can be retrieved using \fBTcl_GetObjResult\fR.
 \fBTcl_EvalFile\fR reads the file given by \fIfileName\fR and evaluates
 its contents as a Tcl script.  It returns the same information as
 \fBTcl_EvalObjEx\fR.
-If the file couldn't be read then a Tcl error is returned to describe
-why the file couldn't be read.
-.VS 8.4
-The eofchar for files is '\\32' (^Z) for all platforms.
-If you require a ``^Z'' in code for string comparison, you can use
-``\\032'' or ``\\u001a'', which will be safely substituted by the Tcl
-interpreter into ``^Z''.
-.VE 8.4
+If the file could not be read then a Tcl error is returned to describe
+why the file could not be read.
+The eofchar for files is
+.QW \e32
+(^Z) for all platforms. If you require a
+.QW ^Z
+in code for string comparison, you can use
+.QW \e032
+or
+.QW \eu001a ,
+which will be safely substituted by the Tcl interpreter into
+.QW ^Z .
 .PP
 \fBTcl_EvalObjv\fR executes a single pre-parsed command instead of a
 script.  The \fIobjc\fR and \fIobjv\fR arguments contain the values
 of the words for the Tcl command, one word in each object in
 \fIobjv\fR.  \fBTcl_EvalObjv\fR evaluates the command and returns
 a completion code and result just like \fBTcl_EvalObjEx\fR.
+The caller of \fBTcl_EvalObjv\fR has to manage the reference count of the
+elements of \fIobjv\fR, insuring that the objects are valid until
+\fBTcl_EvalObjv\fR returns.  
 .PP
 \fBTcl_Eval\fR is similar to \fBTcl_EvalObjEx\fR except that the script to
 be executed is supplied as a string instead of an object and no compilation
 occurs.  The string should be a proper UTF-8 string as converted by
 \fBTcl_ExternalToUtfDString\fR or \fBTcl_ExternalToUtf\fR when it is known
-to possibly contain upper ASCII characters who's possible combinations
+to possibly contain upper ASCII characters whose possible combinations
 might be a UTF-8 special code.  The string is parsed and executed directly
 (using \fBTcl_EvalObjv\fR) instead of compiling it and executing the
 bytecodes.  In situations where it is known that the script will never be
@@ -126,7 +132,7 @@ executed again, \fBTcl_Eval\fR may be faster than \fBTcl_EvalObjEx\fR.
 Tcl 8.0, \fBTcl_Eval\fR copies the object result in \fIinterp\fR to
 \fIinterp->result\fR (use is deprecated) where it can be accessed directly.
  This makes \fBTcl_Eval\fR somewhat slower than \fBTcl_EvalEx\fR, which
-doesn't do the copy.
+does not do the copy.
 .PP
 \fBTcl_EvalEx\fR is an extended version of \fBTcl_Eval\fR that takes
 additional arguments \fInumBytes\fR and \fIflags\fR.  For the
@@ -163,8 +169,8 @@ compiled to bytecodes; instead it is executed directly
 as is done by \fBTcl_EvalEx\fR.  The
 \fBTCL_EVAL_DIRECT\fR flag is useful in situations where the
 contents of an object are going to change immediately, so the
-bytecodes won't be reused in a future execution.  In this case,
-it's faster to execute the script directly.
+bytecodes will not be reused in a future execution.  In this case,
+it is faster to execute the script directly.
 .TP 23
 \fBTCL_EVAL_GLOBAL\fR
 If this flag is set, the script is processed at global level.  This
@@ -197,7 +203,6 @@ the \fBreturn\fR, \fBbreak\fR, or \fBcontinue\fR command was
 invoked in an inappropriate place.
 This means that top-level applications should never see a return code
 from \fBTcl_EvalObjEx\fR other then \fBTCL_OK\fR or \fBTCL_ERROR\fR.
-.VE
 
 .SH KEYWORDS
 execute, file, global, object, result, script
diff --git a/doc/Exit.3 b/doc/Exit.3
index a281829..aa69b47 100644
--- a/doc/Exit.3
+++ b/doc/Exit.3
@@ -5,10 +5,10 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH Tcl_Exit 3 8.1 Tcl "Tcl Library Procedures"
+.TH Tcl_Exit 3 8.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_Exit, Tcl_Finalize, Tcl_CreateExitHandler, Tcl_DeleteExitHandler, Tcl_ExitThread, Tcl_FinalizeThread, Tcl_CreateThreadExitHandler, Tcl_DeleteThreadExitHandler \- end the application or thread (and invoke exit handlers)
+Tcl_Exit, Tcl_Finalize, Tcl_CreateExitHandler, Tcl_DeleteExitHandler, Tcl_ExitThread, Tcl_FinalizeThread, Tcl_CreateThreadExitHandler, Tcl_DeleteThreadExitHandler, Tcl_SetExitProc \- end the application or thread (and invoke exit handlers)
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -28,6 +28,11 @@ Tcl_Exit, Tcl_Finalize, Tcl_CreateExitHandler, Tcl_DeleteExitHandler, Tcl_ExitTh
 \fBTcl_CreateThreadExitHandler\fR(\fIproc, clientData\fR)
 .sp
 \fBTcl_DeleteThreadExitHandler\fR(\fIproc, clientData\fR)
+.sp
+.VS 8.5
+Tcl_ExitProc *
+\fBTcl_SetExitProc\fR(\fIproc\fR)
+.VE 8.5
 .SH ARGUMENTS
 .AS Tcl_ExitProc clientData
 .AP int status  in
@@ -36,7 +41,9 @@ Exact meaning may
 be platform-specific.  0 usually means a normal exit, any nonzero value
 usually means that an error occurred.
 .AP Tcl_ExitProc *proc in
-Procedure to invoke before exiting application.
+Procedure to invoke before exiting application, or (for
+\fBTcl_SetExitProc\fR) NULL to uninstall the current application exit
+procedure.
 .AP ClientData clientData in
 Arbitrary one-word value to pass to \fIproc\fR.
 .BE
@@ -57,6 +64,12 @@ otherwise causes the application to terminate without calling
 \fBTcl_Exit\fR, the exit handlers will not be run.
 \fBTcl_Exit\fR internally invokes the \fBexit\fR system call, thus it never
 returns control to its caller.
+.VS 8.5
+If an application exit handler has been installed (see
+\fBTcl_SetExitProc\fR), that handler is invoked with an argument
+consisting of the exit status (cast to ClientData); the application
+exit handler should not return control to Tcl.
+.VE 8.5
 .PP
 \fBTcl_Finalize\fR is similar to \fBTcl_Exit\fR except that it does not
 exit from the current process.
@@ -71,14 +84,12 @@ However, to ensure portability, your code should always invoke
 code will work on all platforms. \fBTcl_Finalize\fR can be safely called
 more than once.
 .PP
-.VS
 \fBTcl_ExitThread\fR is used to terminate the current thread and invoke
 per-thread exit handlers.  This finalization is done by
 \fBTcl_FinalizeThread\fR, which you can call if you just want to clean
 up per-thread state and invoke the thread exit handlers.
 \fBTcl_Finalize\fR calls \fBTcl_FinalizeThread\fR for the current
 thread automatically.
-.VE
 .PP
 \fBTcl_CreateExitHandler\fR arranges for \fIproc\fR to be invoked
 by \fBTcl_Finalize\fR and \fBTcl_Exit\fR.
@@ -105,7 +116,6 @@ indicated by \fIproc\fR and \fIclientData\fR so that no call
 to \fIproc\fR will be made.  If no such handler exists then
 \fBTcl_DeleteExitHandler\fR or \fBTcl_DeleteThreadExitHandler\fR does nothing.
 .PP
-.VS
 .PP
 \fBTcl_Finalize\fR and \fBTcl_Exit\fR execute all registered exit handlers,
 in reverse order from the order in which they were registered.
@@ -115,15 +125,23 @@ unloads \fBB\fR before it itself is unloaded.
 If extension \fBA\fR registers its exit handlers before loading extension
 \fBB\fR, this ensures that any exit handlers for \fBB\fR will be executed
 before the exit handlers for \fBA\fR.
-.VE
-.VS
 .PP
 \fBTcl_Finalize\fR and \fBTcl_Exit\fR call \fBTcl_FinalizeThread\fR 
 and the thread exit handlers \fIafter\fR
 the process-wide exit handlers.  This is because thread finalization shuts
 down the I/O channel system, so any attempt at I/O by the global exit
 handlers will vanish into the bitbucket.
-.VE
+.PP
+.VS 8.5
+\fBTcl_SetExitProc\fR installs an application exit handler, returning
+the previously-installed application exit handler or NULL if no
+application handler was installed.  If an application exit handler is
+installed, that exit handler takes over complete responsibility for
+finalization of Tcl's subsystems via \fBTcl_Finalize\fR at an
+appropriate time.  The argument passed to \fIproc\fR when it is
+invoked will be the exit status code (as passed to \fBTcl_Exit\fR)
+cast to a ClientData value.
+.VE 8.5
 
 .SH KEYWORDS
 callback, cleanup, dynamic loading, end application, exit, unloading, thread
diff --git a/doc/ExprLong.3 b/doc/ExprLong.3
index ead98f5..ef93284 100644
--- a/doc/ExprLong.3
+++ b/doc/ExprLong.3
@@ -15,23 +15,21 @@ Tcl_ExprLong, Tcl_ExprDouble, Tcl_ExprBoolean, Tcl_ExprString \- evaluate an exp
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_ExprLong\fR(\fIinterp, string, longPtr\fR)
+\fBTcl_ExprLong\fR(\fIinterp, expr, longPtr\fR)
 .sp
 int
-\fBTcl_ExprDouble\fR(\fIinterp, string, doublePtr\fR)
+\fBTcl_ExprDouble\fR(\fIinterp, expr, doublePtr\fR)
 .sp
 int
-\fBTcl_ExprBoolean\fR(\fIinterp, string, booleanPtr\fR)
+\fBTcl_ExprBoolean\fR(\fIinterp, expr, booleanPtr\fR)
 .sp
 int
-\fBTcl_ExprString\fR(\fIinterp, string\fR)
+\fBTcl_ExprString\fR(\fIinterp, expr\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *booleanPtr
+.AS Tcl_Interp *booleanPtr out
 .AP Tcl_Interp *interp in
-Interpreter in whose context to evaluate \fIstring\fR.
-.VS 8.4
-.AP "CONST char" *string in
-.VE
+Interpreter in whose context to evaluate \fIexpr\fR.
+.AP "const char" *expr in
 Expression to be evaluated.  
 .AP long *longPtr out
 Pointer to location in which to store the integer value of the
@@ -47,7 +45,7 @@ expression.
 .SH DESCRIPTION
 .PP
 These four procedures all evaluate the expression
-given by the \fIstring\fR argument
+given by the \fIexpr\fR argument
 and return the result in one of four different forms.
 The expression can have any of the forms accepted by the \fBexpr\fR command.
 Note that these procedures have been largely replaced by the
@@ -92,7 +90,11 @@ number, then they store 0 at \fI*booleanPtr\fR if
 the value was zero and 1 otherwise.
 If the expression's actual value is a non-numeric string then
 it must be one of the values accepted by \fBTcl_GetBoolean\fR
-such as ``yes'' or ``no'', or else an error occurs.
+such as
+.QW yes
+or
+.QW no ,
+or else an error occurs.
 .PP
 \fBTcl_ExprString\fR returns the value of the expression as a
 string stored in the interpreter's result.
diff --git a/doc/ExprLongObj.3 b/doc/ExprLongObj.3
index c3e9697..c8a564d 100644
--- a/doc/ExprLongObj.3
+++ b/doc/ExprLongObj.3
@@ -86,7 +86,11 @@ number, then they store 0 at \fI*booleanPtr\fR if
 the value was zero and 1 otherwise.
 If the expression's actual value is a non-numeric string then
 it must be one of the values accepted by \fBTcl_GetBoolean\fR
-such as ``yes'' or ``no'', or else an error occurs.
+such as
+.QW yes
+or
+.QW no ,
+or else an error occurs.
 .PP
 If \fBTcl_ExprObj\fR successfully evaluates the expression,
 it stores a pointer to the Tcl object
diff --git a/doc/FileSystem.3 b/doc/FileSystem.3
index 3cb2c7e..c4a28c2 100644
--- a/doc/FileSystem.3
+++ b/doc/FileSystem.3
@@ -8,7 +8,7 @@
 .TH Filesystem 3 8.4 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_FSRegister, Tcl_FSUnregister, Tcl_FSData, Tcl_FSMountsChanged, Tcl_FSGetFileSystemForPath, Tcl_FSGetPathType, Tcl_FSCopyFile, Tcl_FSCopyDirectory, Tcl_FSCreateDirectory, Tcl_FSDeleteFile, Tcl_FSRemoveDirectory, Tcl_FSRenameFile, Tcl_FSListVolumes, Tcl_FSEvalFile, Tcl_FSLoadFile, Tcl_FSMatchInDirectory, Tcl_FSLink, Tcl_FSLstat, Tcl_FSUtime, Tcl_FSFileAttrsGet, Tcl_FSFileAttrsSet, Tcl_FSFileAttrStrings, Tcl_FSStat, Tcl_FSAccess, Tcl_FSOpenFileChannel, Tcl_FSGetCwd, Tcl_FSChdir, Tcl_FSPathSeparator, Tcl_FSJoinPath, Tcl_FSSplitPath, Tcl_FSEqualPaths, Tcl_FSGetNormalizedPath, Tcl_FSJoinToPath, Tcl_FSConvertToPathType, Tcl_FSGetInternalRep, Tcl_FSGetTranslatedPath, Tcl_FSGetTranslatedStringPath, Tcl_FSNewNativePath, Tcl_FSGetNativePath, Tcl_FSFileSystemInfo, Tcl_AllocStatBuf \- procedures to interact with any filesystem
+Tcl_FSRegister, Tcl_FSUnregister, Tcl_FSData, Tcl_FSMountsChanged, Tcl_FSGetFileSystemForPath, Tcl_FSGetPathType, Tcl_FSCopyFile, Tcl_FSCopyDirectory, Tcl_FSCreateDirectory, Tcl_FSDeleteFile, Tcl_FSRemoveDirectory, Tcl_FSRenameFile, Tcl_FSListVolumes, Tcl_FSEvalFile, Tcl_FSEvalFileEx, Tcl_FSLoadFile, Tcl_FSMatchInDirectory, Tcl_FSLink, Tcl_FSLstat, Tcl_FSUtime, Tcl_FSFileAttrsGet, Tcl_FSFileAttrsSet, Tcl_FSFileAttrStrings, Tcl_FSStat, Tcl_FSAccess, Tcl_FSOpenFileChannel, Tcl_FSGetCwd, Tcl_FSChdir, Tcl_FSPathSeparator, Tcl_FSJoinPath, Tcl_FSSplitPath, Tcl_FSEqualPaths, Tcl_FSGetNormalizedPath, Tcl_FSJoinToPath, Tcl_FSConvertToPathType, Tcl_FSGetInternalRep, Tcl_FSGetTranslatedPath, Tcl_FSGetTranslatedStringPath, Tcl_FSNewNativePath, Tcl_FSGetNativePath, Tcl_FSFileSystemInfo, Tcl_AllocStatBuf \- procedures to interact with any filesystem
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -26,10 +26,10 @@ void
 \fBTcl_FSMountsChanged\fR(\fIfsPtr\fR)
 .sp
 Tcl_Filesystem*
-\fBTcl_FSGetFileSystemForPath\fR(\fIpathObjPtr\fR)
+\fBTcl_FSGetFileSystemForPath\fR(\fIpathPtr\fR)
 .sp
 Tcl_PathType
-\fBTcl_FSGetPathType\fR(\fIpathObjPtr\fR)
+\fBTcl_FSGetPathType\fR(\fIpathPtr\fR)
 .sp
 int
 \fBTcl_FSCopyFile\fR(\fIsrcPathPtr, destPathPtr\fR)
@@ -52,6 +52,11 @@ int
 Tcl_Obj*
 \fBTcl_FSListVolumes\fR(\fIvoid\fR)
 .sp
+.VS 8.5
+int
+\fBTcl_FSEvalFileEx\fR(\fIinterp, pathPtr, encodingName\fR)
+.VE 8.5
+.sp
 int
 \fBTcl_FSEvalFile\fR(\fIinterp, pathPtr\fR)
 .sp
@@ -60,7 +65,7 @@ int
                handlePtr, unloadProcPtr\fR)
 .sp
 int
-\fBTcl_FSMatchInDirectory\fR(\fIinterp, result, pathPtr, pattern, types\fR)
+\fBTcl_FSMatchInDirectory\fR(\fIinterp, resultPtr, pathPtr, pattern, types\fR)
 .sp
 Tcl_Obj*
 \fBTcl_FSLink\fR(\fIlinkNamePtr, toPtr, linkAction\fR)
@@ -77,7 +82,7 @@ int
 int
 \fBTcl_FSFileAttrsSet\fR(\fIinterp, int index, pathPtr, Tcl_Obj *objPtr\fR)
 .sp
-CONST char**      
+const char**
 \fBTcl_FSFileAttrStrings\fR(\fIpathPtr, objPtrRef\fR)
 .sp
 int
@@ -86,7 +91,7 @@ int
 int
 \fBTcl_FSAccess\fR(\fIpathPtr, mode\fR)
 .sp
-Tcl_Channel 
+Tcl_Channel
 \fBTcl_FSOpenFileChannel\fR(\fIinterp, pathPtr, modeString, permissions\fR)
 .sp
 Tcl_Obj*
@@ -116,19 +121,19 @@ Tcl_Obj*
 int
 \fBTcl_FSConvertToPathType\fR(\fIinterp, pathPtr\fR)
 .sp
-ClientData 
+ClientData
 \fBTcl_FSGetInternalRep\fR(\fIpathPtr, fsPtr\fR)
 .sp
-Tcl_Obj* 
+Tcl_Obj *
 \fBTcl_FSGetTranslatedPath\fR(\fIinterp, pathPtr\fR)
 .sp
-CONST char* 
+const char *
 \fBTcl_FSGetTranslatedStringPath\fR(\fIinterp, pathPtr\fR)
 .sp
 Tcl_Obj*
 \fBTcl_FSNewNativePath\fR(\fIfsPtr, clientData\fR)
 .sp
-CONST char* 
+const char *
 \fBTcl_FSGetNativePath\fR(\fIpathPtr\fR)
 .sp
 Tcl_Obj*
@@ -137,7 +142,7 @@ Tcl_Obj*
 Tcl_StatBuf*
 \fBTcl_AllocStatBuf\fR()
 .SH ARGUMENTS
-.AS Tcl_Filesystem *fsPtr in
+.AS Tcl_FSUnloadFileProc **unloadProcPtr out
 .AP Tcl_Filesystem *fsPtr in
 Points to a structure containing the addresses of procedures that
 can be called to perform the various filesystem operations.
@@ -146,21 +151,21 @@ The path represented by this object is used for the operation in
 question.  If the object does not already have an internal \fBpath\fR
 representation, it will be converted to have one.
 .AP Tcl_Obj *srcPathPtr in
-As for \fBpathPtr\fR, but used for the source file for a copy or
+As for \fIpathPtr\fR, but used for the source file for a copy or
 rename operation.
 .AP Tcl_Obj *destPathPtr in
-As for \fBpathPtr\fR, but used for the destination filename for a copy or
+As for \fIpathPtr\fR, but used for the destination filename for a copy or
 rename operation.
-.AP "CONST char" *pattern in
-Only files or directories matching this pattern will be returned by
-\fBTcl_FSMatchInDirectory\fR.
-.AP GlobTypeData *types in
+.AP "const char" *encodingName in
+The encoding of the data stored in the
+file identified by \fIpathPtr\fR and to be evaluated.
+.AP "const char" *pattern in
+Only files or directories matching this pattern will be returned.
+.AP Tcl_GlobTypeData *types in
 Only files or directories matching the type descriptions contained in
-this structure will be returned by \fBTcl_FSMatchInDirectory\fR.  It
-is very important that the 'directory' flag is properly handled.
-This parameter may be NULL.
+this structure will be returned.  This parameter may be NULL.
 .AP Tcl_Interp *interp in
-Interpreter to use either for results, evaluation, or reporting error 
+Interpreter to use either for results, evaluation, or reporting error
 messages.
 .AP ClientData clientData in
 The native description of the path object to create.
@@ -173,17 +178,17 @@ to \fBpath\fR type.
 .AP Tcl_Obj *listObj in
 The list of path elements to operate on with a \fBjoin\fR operation.
 .AP int elements in
-If non-negative, the number of elements in the listObj which should
+If non-negative, the number of elements in the \fIlistObj\fR which should
 be joined together.  If negative, then all elements are joined.
 .AP Tcl_Obj **errorPtr out
 In the case of an error, filled with an object containing the name of
 the file which caused an error in the various copy/rename operations.
 .AP Tcl_Obj **objPtrRef out
 Filled with an object containing the result of the operation.
-.AP Tcl_Obj *result out
-Pre-allocated object in which to store (by lappending) the list of
-files or directories which are successfully matched in
-\fBTcl_FSMatchInDirectory\fR.
+.AP Tcl_Obj *resultPtr out
+Pre-allocated object in which to store (using
+\fBTcl_ListObjAppendElement\fR) the list of
+files or directories which are successfully matched.
 .AP int mode in
 Mask consisting of one or more of R_OK, W_OK, X_OK and F_OK.  R_OK,
 W_OK and X_OK request checking whether the file exists and  has  read,
@@ -191,25 +196,25 @@ write and  execute  permissions, respectively.  F_OK just requests
 checking for the existence of the file.
 .AP Tcl_StatBuf *statPtr out
 The structure that contains the result of a stat or lstat operation.
-.AP "CONST char" *sym1 in
+.AP "const char" *sym1 in
 Name of a procedure to look up in the file's symbol table
-.AP "CONST char" *sym2 in
+.AP "const char" *sym2 in
 Name of a procedure to look up in the file's symbol table
 .AP Tcl_PackageInitProc **proc1Ptr out
 Filled with the init function for this code.
 .AP Tcl_PackageInitProc **proc2Ptr out
 Filled with the safe-init function for this code.
-.AP Tcl_LoadHandle *handlePtr out
-Filled with an abstract token representing the loaded file.
 .AP ClientData *clientDataPtr out
 Filled with the clientData value to pass to this code's unload
 function when it is called.
-.AP TclfsUnloadFileProc_ **unloadProcPtr out
+.AP Tcl_LoadHandle *handlePtr out
+Filled with an abstract token representing the loaded file.
+.AP Tcl_FSUnloadFileProc **unloadProcPtr out
 Filled with the function to use to unload this piece of code.
 .AP utimbuf *tval in
-The access and modification times in this structure are read and 
+The access and modification times in this structure are read and
 used to set those values for a given file.
-.AP "CONST char" *modeString in
+.AP "const char" *modeString in
 Specifies how the file is to be accessed.  May have any of the values
 allowed for the \fImode\fR argument to the Tcl \fBopen\fR command.
 .AP int permissions in
@@ -221,151 +226,215 @@ If non-NULL, filled with the number of elements in the split path.
 The base path on to which to join the given elements.  May be NULL.
 .AP int objc in
 The number of elements in \fIobjv\fR.
-.AP "Tcl_Obj *CONST" objv[] in
+.AP "Tcl_Obj *const" objv[] in
 The elements to join to the given base path.
+.AP Tcl_Obj *linkNamePtr in
+The name of the link to be created or read.
+.AP Tcl_Obj *toPtr in
+What the link called \fIlinkNamePtr\fR should be linked to, or NULL if
+the symbolic link specified by \fIlinkNamePtr\fR is to be read.
+.AP int linkAction in
+OR-ed combination of flags indicating what kind of link should be
+created (will be ignored if \fItoPtr\fR is NULL). Valid bits to set
+are \fBTCL_CREATE_SYMBOLIC_LINK\fR and \fBTCL_CREATE_HARD_LINK\fR.
+When both flags are set and the underlying filesystem can do either,
+symbolic links are preferred.
 .BE
 
 .SH DESCRIPTION
 .PP
-There are several reasons for calling the \fBTcl_FS...\fR functions
+There are several reasons for calling the \fBTcl_FS\fR API functions
+(e.g. \fBTcl_FSAccess\fR and \fBTcl_FSStat\fR)
 rather than calling system level functions like \fBaccess\fR and
 \fBstat\fR directly.  First, they will work cross-platform, so an
-extension which calls them should work unmodified on Unix, MacOS and
+extension which calls them should work unmodified on Unix and
 Windows.  Second, the Windows implementation of some of these functions
 fixes some bugs in the system level calls.  Third, these function calls
-deal with any 'Utf to platform-native' path conversions which may be
+deal with any
+.QW "Utf to platform-native"
+path conversions which may be
 required (and may cache the results of such conversions for greater
 efficiency on subsequent calls).  Fourth, and perhaps most importantly,
-all of these functions are 'virtual filesystem aware'.  Any virtual
-filesystem which has been registered (through
+all of these functions are
+.QW "virtual filesystem aware" .
+Any virtual filesystem (VFS for short) which has been registered (through
 \fBTcl_FSRegister\fR) may reroute file access to alternative
 media or access methods.  This means that all of these functions (and
 therefore the corresponding \fBfile\fR, \fBglob\fR, \fBpwd\fR, \fBcd\fR,
-\fBopen\fR, etc.  Tcl commands) may be operate on 'files' which are not
+\fBopen\fR, etc.  Tcl commands) may be operate on
+.QW files
+which are not
 native files in the native filesystem.  This also means that any Tcl
-extension which accesses the filesystem through this API is
-automatically 'virtual filesystem aware'.  Of course, if an extension
+extension which accesses the filesystem (FS for short) through this API is
+automatically
+.QW "virtual filesystem aware" .
+Of course, if an extension
 accesses the native filesystem directly (through platform-specific
-APIs, for example), then Tcl cannot intercept such calls.  
+APIs, for example), then Tcl cannot intercept such calls.
 .PP
-If appropriate vfs's have been registered, the 'files' may, to give two
+If appropriate VFSes have been registered, the
+.QW files
+may, to give two
 examples, be remote (e.g. situated on a remote ftp server) or archived
 (e.g. lying inside a .zip archive).  Such registered filesystems provide
 a lookup table of functions to implement all or some of the functionality
 listed here.  Finally, the \fBTcl_FSStat\fR and \fBTcl_FSLstat\fR calls
-abstract away from what the 'struct stat' buffer buffer is actually
+abstract away from what the
+.QW "struct stat"
+buffer is actually
 declared to be, allowing the same code to be used both on systems with
 and systems without support for files larger than 2GB in size.
 .PP
-The \fBTcl_FS...\fR are objectified and may cache internal
+The \fBTcl_FS\fR API is objectified and may cache internal
 representations and other path-related strings (e.g. the current working
 directory).  One side-effect of this is that one must not pass in objects
-with a refCount of zero to any of these functions.  If such calls were 
+with a reference count of zero to any of these functions.  If such calls were
 handled, they might result
 in memory leaks (under some circumstances, the filesystem code may wish
 to retain a reference to the passed in object, and so one must not assume
-that after any of these calls return, the object still has a refCount of
-zero - it may have been incremented), or in a direct segfault
+that after any of these calls return, the object still has a reference count of
+zero - it may have been incremented) or in a direct segmentation fault
+(or other memory access error)
 due to the object being freed part way through the complex object
 manipulation required to ensure that the path is fully normalized and
 absolute for filesystem determination.  The practical lesson to learn
-from this is that \fBTcl_Obj *path = Tcl_NewStringObj(...)  ;
-Tcl_FS...(path) ; Tcl_DecrRefCount(path)\fR is wrong, and may segfault.
-The 'path' must have its refCount incremented before passing it in, or
-decrementing it.  For this reason, objects with a refCount of zero are
+from this is that
+.CS
+Tcl_Obj *path = Tcl_NewStringObj(...);
+Tcl_FS\fIWhatever\fR(path);
+Tcl_DecrRefCount(path);
+.CE
+is wrong, and may cause memory errors. The \fIpath\fR must have its
+reference count incremented before passing it in, or
+decrementing it.  For this reason, objects with a reference count of zero are
 considered not to be valid filesystem paths and calling any Tcl_FS API
-with such an object will result in no action being taken.
-.PP
-\fBTcl_FSCopyFile\fR attempts to copy the file given by srcPathPtr to the
-path name given by destPathPtr.  If the two paths given lie in the same
+function with such an object will result in no action being taken.
+.SS "FS API FUNCTIONS"
+\fBTcl_FSCopyFile\fR attempts to copy the file given by \fIsrcPathPtr\fR to the
+path name given by \fIdestPathPtr\fR.  If the two paths given lie in the same
 filesystem (according to \fBTcl_FSGetFileSystemForPath\fR) then that
-filesystem's 'copy file' function is called (if it is non-NULL).
-Otherwise the function returns -1 and sets Tcl's errno to the 'EXDEV'
-posix error code (which signifies a 'cross-domain link').
-.PP
-\fBTcl_FSCopyDirectory\fR attempts to copy the directory given by srcPathPtr to the
-path name given by destPathPtr.  If the two paths given lie in the same
+filesystem's
+.QW "copy file"
+function is called (if it is non-NULL).
+Otherwise the function returns -1 and sets the \fBerrno\fR global C
+variable to the
+.QW EXDEV
+POSIX error code (which signifies a
+.QW "cross-domain link" ).
+.PP
+\fBTcl_FSCopyDirectory\fR attempts to copy the directory given by \fIsrcPathPtr\fR to the
+path name given by \fIdestPathPtr\fR.  If the two paths given lie in the same
 filesystem (according to \fBTcl_FSGetFileSystemForPath\fR) then that
-filesystem's 'copy file' function is called (if it is non-NULL).
-Otherwise the function returns -1 and sets Tcl's errno to the 'EXDEV'
-posix error code (which signifies a 'cross-domain link').
+filesystem's
+.QW "copy file"
+function is called (if it is non-NULL).
+Otherwise the function returns -1 and sets the \fBerrno\fR global C
+variable to the
+.QW EXDEV
+POSIX error code (which signifies a
+.QW "cross-domain link" ).
 .PP
 \fBTcl_FSCreateDirectory\fR attempts to create the directory given by
-pathPtr by calling the owning filesystem's 'create directory'
+\fIpathPtr\fR by calling the owning filesystem's
+.QW "create directory"
 function.
 .PP
 \fBTcl_FSDeleteFile\fR attempts to delete the file given by
-pathPtr by calling the owning filesystem's 'delete file'
+\fIpathPtr\fR by calling the owning filesystem's
+.QW "delete file"
 function.
 .PP
 \fBTcl_FSRemoveDirectory\fR attempts to remove the directory given by
-pathPtr by calling the owning filesystem's 'remove directory'
+\fIpathPtr\fR by calling the owning filesystem's
+.QW "remove directory"
 function.
 .PP
 \fBTcl_FSRenameFile\fR attempts to rename the file or directory given by
-srcPathPtr to the path name given by destPathPtr.  If the two paths
+\fIsrcPathPtr\fR to the path name given by \fIdestPathPtr\fR.  If the two paths
 given lie in the same filesystem (according to
-\fBTcl_FSGetFileSystemForPath\fR) then that filesystem's 'rename file'
+\fBTcl_FSGetFileSystemForPath\fR) then that filesystem's
+.QW "rename file"
 function is called (if it is non-NULL).  Otherwise the function returns -1
-and sets Tcl's errno to the 'EXDEV' posix error code (which signifies
-a ``cross-domain link'').
-.PP
-\fBTcl_FSListVolumes\fR calls each filesystem which has a non-NULL 'list
-volumes' function and asks them to return their list of root volumes.  It
+and sets the \fBerrno\fR global C variable to the
+.QW EXDEV
+POSIX error code (which signifies a
+.QW "cross-domain link" ).
+.PP
+\fBTcl_FSListVolumes\fR calls each filesystem which has a non-NULL
+.QW "list volumes"
+function and asks them to return their list of root volumes.  It
 accumulates the return values in a list which is returned to the
-caller (with a refCount of 0).
+caller (with a reference count of 0).
 .PP
-\fBTcl_FSEvalFile\fR reads the file given by \fIpathPtr\fR and evaluates
+.VS 8.5
+\fBTcl_FSEvalFileEx\fR reads the file given by \fIpathPtr\fR using
+the encoding identified by \fIencodingName\fR and evaluates
 its contents as a Tcl script.  It returns the same information as
 \fBTcl_EvalObjEx\fR.
-If the file couldn't be read then a Tcl error is returned to describe
-why the file couldn't be read.
-The eofchar for files is '\\32' (^Z) for all platforms.
-If you require a ``^Z'' in code for string comparison, you can use
-``\\032'' or ``\\u001a'', which will be safely substituted by the Tcl
-interpreter into ``^Z''.
+If \fIencodingName\fR is NULL, the system encoding is used for
+reading the file contents.
+If the file could not be read then a Tcl error is returned to describe
+why the file could not be read.
+The eofchar for files is
+.QW \e32
+(^Z) for all platforms.
+If you require a
+.QW ^Z
+in code for string comparison, you can use
+.QW \e032
+or
+.QW \eu001a ,
+which will be safely substituted by the Tcl interpreter into
+.QW ^Z .
+\fBTcl_FSEvalFile\fR is a simpler version of
+\fBTcl_FSEvalFileEx\fR that always uses the system encoding
+when reading the file.
+.VE 8.5
 .PP
 \fBTcl_FSLoadFile\fR dynamically loads a binary code file into memory and
 returns the addresses of two procedures within that file, if they are
-defined.  The appropriate function for the filesystem to which pathPtr
+defined.  The appropriate function for the filesystem to which \fIpathPtr\fR
 belongs will be called.  If that filesystem does not implement this
 function (most virtual filesystems will not, because of OS limitations
 in dynamically loading binary code), Tcl will attempt to copy the file
 to a temporary directory and load that temporary file.
 .PP
 Returns a standard Tcl completion code.  If an error occurs, an error
-message is left in the interp's result.
+message is left in the \fIinterp\fR's result.
 .PP
 \fBTcl_FSMatchInDirectory\fR is used by the globbing code to search a
 directory for all files which match a given pattern.  The appropriate
-function for the filesystem to which pathPtr belongs will be called.
+function for the filesystem to which \fIpathPtr\fR belongs will be called.
 .PP
 The return value is a standard Tcl result indicating whether an error
-occurred in globbing.  Error messages are placed in interp, but good
-results are placed in the resultPtr given.
- 	
-Note that the 'glob' code implements recursive patterns internally, so
+occurred in globbing.  Error messages are placed in interp (unless 
+interp is NULL, which is allowed), but good results are placed in the 
+resultPtr given.
+.PP
+Note that the \fBglob\fR code implements recursive patterns internally, so
 this function will only ever be passed simple patterns, which can be
-matched using the logic of 'string match'.  To handle recursion, Tcl
+matched using the logic of \fBstring match\fR.  To handle recursion, Tcl
 will call this function frequently asking only for directories to be
-returned.
+returned.  A special case of being called with a NULL pattern indicates
+that the path needs to be checked only for the correct type.
 .PP
-\fBTcl_FSLink\fR replaces the library version of readlink(), and
-extends it to support the creation of links.  The appropriate function 
-for the filesystem to which linkNamePtr belongs will be called.
+\fBTcl_FSLink\fR replaces the library version of \fBreadlink\fR, and
+extends it to support the creation of links.  The appropriate function
+for the filesystem to which \fIlinkNamePtr\fR belongs will be called.
 .PP
-If the \fItoPtr\fR is NULL, a readlink action is performed.  The result
+If the \fItoPtr\fR is NULL, a
+.QW "read link"
+action is performed.  The result
 is a Tcl_Obj specifying the contents of the symbolic link given by
 \fIlinkNamePtr\fR, or NULL if the link could not be read.  The result is owned
 by the caller, which should call Tcl_DecrRefCount when the result is no
 longer needed.  If the \fItoPtr\fR is not NULL, Tcl should create a link
 of one of the types passed in in the \fIlinkAction\fR flag.  This flag is
-an or'd combination of TCL_CREATE_SYMBOLIC_LINK and TCL_CREATE_HARD_LINK.
+an ORed combination of \fBTCL_CREATE_SYMBOLIC_LINK\fR and \fBTCL_CREATE_HARD_LINK\fR.
 Where a choice exists (i.e. more than one flag is passed in), the Tcl
 convention is to prefer symbolic links.  When a link is successfully
 created, the return value should be \fItoPtr\fR (which is therefore
-already owned by the caller).  If unsuccessful, NULL should be
-returned.
+already owned by the caller).  If unsuccessful, NULL is returned.
 .PP
 \fBTcl_FSLstat\fR fills the stat structure \fIstatPtr\fR with information
 about the specified file.  You do not need any access rights to the
@@ -381,43 +450,49 @@ If \fIpath\fR exists, \fBTcl_FSLstat\fR returns 0 and the stat structure
 is filled with data.  Otherwise, -1 is returned, and no stat info is
 given.
 .PP
-\fBTcl_FSUtime\fR replaces the library version of utime.  
+\fBTcl_FSUtime\fR replaces the library version of utime.
+.PP
+This returns 0 on success and -1 on error (as per the \fButime\fR
+documentation).  If successful, the function
+will update the
+.QW atime
+and
+.QW mtime
+values of the file given.
 .PP
-For results see 'utime' documentation.  If successful, the function
-will update the 'atime' and 'mtime' values of the file given.
+\fBTcl_FSFileAttrsGet\fR implements read access for the hookable \fBfile
+attributes\fR subcommand.  The appropriate function for the filesystem to
+which \fIpathPtr\fR belongs will be called.
 .PP
-\fBTcl_FSFileAttrsGet\fR implements read access for the hookable 'file
-attributes' subcommand.  The appropriate function for the filesystem to
-which pathPtr belongs will be called.
+If the result is \fBTCL_OK\fR, then an object was placed in
+\fIobjPtrRef\fR, which
+will only be temporarily valid (unless \fBTcl_IncrRefCount\fR is called).
 .PP
-If the result is TCL_OK, then an object was placed in objPtrRef, which
-will only be temporarily valid (unless Tcl_IncrRefCount is called).
+\fBTcl_FSFileAttrsSet\fR implements write access for the hookable \fBfile
+attributes\fR subcommand.  The appropriate function for the filesystem to
+which \fIpathPtr\fR belongs will be called.
 .PP
-\fBTcl_FSFileAttrsSet\fR implements write access for the hookable 'file
-attributes' subcommand.  The appropriate function for the filesystem to
-which pathPtr belongs will be called.
+\fBTcl_FSFileAttrStrings\fR implements part of the hookable \fBfile
+attributes\fR subcommand.  The appropriate function for the filesystem
+to which \fIpathPtr\fR belongs will be called.
 .PP
-\fBTcl_FSFileAttrStrings\fR implements part of the hookable 'file attributes'
-subcommand.  The appropriate function for the filesystem to which
-pathPtr belongs will be called.
-.PP 
 The called procedure may either return an array of strings, or may
-instead return NULL and place a Tcl list into the given objPtrRef.  Tcl
-will take that list and first increment its refCount before using it.
-On completion of that use, Tcl will decrement its refCount.  Hence if
+instead return NULL and place a Tcl list into the given \fIobjPtrRef\fR.  Tcl
+will take that list and first increment its reference count before using it.
+On completion of that use, Tcl will decrement its reference count.  Hence if
 the list should be disposed of by Tcl when done, it should have a
-refCount of zero, and if the list should not be disposed of, the
-filesystem should ensure it retains a refCount on the object.
+reference count of zero, and if the list should not be disposed of, the
+filesystem should ensure it retains a reference count to the object.
 .PP
 \fBTcl_FSAccess\fR checks whether the process would be allowed to read,
-write or test for existence of the file (or other file system object)
-whose name is pathname.   If pathname is a symbolic link on Unix,
+write or test for existence of the file (or other filesystem object)
+whose name is \fIpathname\fR.   If \fIpathname\fR is a symbolic link on Unix,
 then permissions of the file referred by this symbolic link are
 tested.
 .PP
 On success (all requested permissions granted), zero is returned.  On
 error (at least one bit in mode asked for a permission that is denied,
-or some other  error occurred), -1 is returned.
+or some other error occurred), -1 is returned.
 .PP
 \fBTcl_FSStat\fR fills the stat structure \fIstatPtr\fR with information
 about the specified file.  You do not need any access rights to the
@@ -451,87 +526,110 @@ If one of the standard channels, \fBstdin, stdout\fR or \fBstderr\fR was
 previously closed, the act of creating the new channel also assigns it as a
 replacement for the standard channel.
 .PP
-\fBTcl_FSGetCwd\fR replaces the library version of getcwd().
+\fBTcl_FSGetCwd\fR replaces the library version of \fBgetcwd\fR.
 .PP
 It returns the Tcl library's current working directory.  This may be
-different to the native platform's working directory, in the case for 
-which the cwd is not in the native filesystem.
+different to the native platform's working directory, which happens when
+the current working directory is not in the native filesystem.
 .PP
 The result is a pointer to a Tcl_Obj specifying the current directory,
 or NULL if the current directory could not be determined.  If NULL is
-returned, an error message is left in the interp's result.
-	
-The result already has its refCount incremented for the caller.  When
-it is no longer needed, that refCount should be decremented.  This is
+returned, an error message is left in the \fIinterp\fR's result.
+.PP
+The result already has its reference count incremented for the caller.  When
+it is no longer needed, that reference count should be decremented.  This is
 needed for thread-safety purposes, to allow multiple threads to access
 this and related functions, while ensuring the results are always
 valid.
 .PP
-\fBTcl_FSChdir\fR replaces the library version of chdir().  The path is
+\fBTcl_FSChdir\fR replaces the library version of \fBchdir\fR.  The path is
 normalized and then passed to the filesystem which claims it.  If that
-filesystem does not implement this function, Tcl will fallback to a 
-combination of stat and access to check whether the directory exists
-and has appropriate permissions.
-.PP 
-For results, see chdir() documentation.  If successful, we keep a
-record of the successful path in cwdPathPtr for subsequent calls to
-getcwd.
-.PP
-\fBTcl_FSPathSeparator\fR returns the separator character to be used for 
-most specific element of the path specified by pathPtr (i.e. the last 
+filesystem does not implement this function, Tcl will fallback to a
+combination of \fBstat\fR and \fBaccess\fR to check whether the directory
+exists and has appropriate permissions.
+.PP
+For results, see \fBchdir\fR documentation.  If successful, we keep a
+record of the successful path in \fIcwdPathPtr\fR for subsequent calls to
+\fBTcl_FSGetCwd\fR.
+.PP
+\fBTcl_FSPathSeparator\fR returns the separator character to be used for
+most specific element of the path specified by \fIpathPtr\fR (i.e. the last
 part of the path).
 .PP
 The separator is returned as a Tcl_Obj containing a string of length
 1.  If the path is invalid, NULL is returned.
 .PP
-\fBTcl_FSJoinPath\fR takes the given Tcl_Obj, which should be a valid list,
-and returns the path object given by considering the first 'elements'
-elements as valid path segments.  If elements < 0, we use the entire
-list.
-.PP
-Returns object with refCount of zero, containing the joined path.
+\fBTcl_FSJoinPath\fR takes the given Tcl_Obj, which must be a valid
+list (which is allowed to have a reference count of zero), and returns the path
+object given by considering the first \fIelements\fR elements as valid path
+segments (each path segment may be a complete path, a partial path or
+just a single possible directory or file name).  If any path segment is
+actually an absolute path, then all prior path segments are discarded.
+If \fIelements\fR is less than 0, we use the entire list.
+.PP
+It is possible that the returned object is actually an element
+of the given list, so the caller should be careful to increment the
+reference count of the result before freeing the list.
+.PP
+The returned object, typically with a reference count of zero (but it
+could be shared
+under some conditions), contains the joined path.  The caller must
+add a reference count to the object before using it.  In particular, the
+returned object could be an element of the given list, so freeing the
+list might free the object prematurely if no reference count has been taken.
+If the number of elements is zero, then the returned object will be
+an empty-string Tcl_Obj.
 .PP
 \fBTcl_FSSplitPath\fR takes the given Tcl_Obj, which should be a valid path,
-and returns a Tcl List object containing each segment of that path as
+and returns a Tcl list object containing each segment of that path as
 an element.
-.PP
-Returns list object with refCount of zero.  If the passed in lenPtr is
-non-NULL, we use it to return the number of elements in the returned
-list.
+It returns a list object with a reference count of zero.  If the
+passed in \fIlenPtr\fR is non-NULL, the variable it points to will be
+updated to contain the number of elements in the returned list.
 .PP
 \fBTcl_FSEqualPaths\fR tests whether the two paths given represent the same
 filesystem object
 .PP
-It returns 1 if the paths are equal, and 0 if they are different.  If 
+It returns 1 if the paths are equal, and 0 if they are different.  If
 either path is NULL, 0 is always returned.
 .PP
 \fBTcl_FSGetNormalizedPath\fR this important function attempts to extract
 from the given Tcl_Obj a unique normalized path representation, whose
 string value can be used as a unique identifier for the file.
 .PP
-It returns the normalized path object, with refCount of zero, or NULL 
-if the path was invalid or could otherwise not be successfully
-converted.  Extraction of absolute, normalized paths is very
-efficient (because the filesystem operates on these representations
-internally), although the result when the filesystem contains
-numerous symbolic links may not be the most user-friendly
-version of a path.
+It returns the normalized path object, owned by Tcl, or NULL if the path
+was invalid or could otherwise not be successfully converted.
+Extraction of absolute, normalized paths is very efficient (because the
+filesystem operates on these representations internally), although the
+result when the filesystem contains numerous symbolic links may not be
+the most user-friendly version of a path.  The return value is owned by
+Tcl and has a lifetime equivalent to that of the \fIpathPtr\fR passed in
+(unless that is a relative path, in which case the normalized path
+object may be freed any time the cwd changes) - the caller can of
+course increment the refCount if it wishes to maintain a copy for longer.
 .PP
 \fBTcl_FSJoinToPath\fR takes the given object, which should usually be a
 valid path or NULL, and joins onto it the array of paths segments
 given.
 .PP
-Returns object with refCount of zero, containing the joined path.
+Returns object, typically with refCount of zero (but it could be shared
+under some conditions), containing the joined path.  The caller must
+add a refCount to the object before using it.  If any of the objects
+passed into this function (pathPtr or path elements) have a refCount
+of zero, they will be freed when this function returns.
 .PP
 \fBTcl_FSConvertToPathType\fR tries to convert the given Tcl_Obj to a valid
 Tcl path type, taking account of the fact that the cwd may have changed
 even if this object is already supposedly of the correct type.
-The filename may begin with "~" (to indicate current user's home
-directory) or "~<user>" (to indicate any user's home directory).
-.PP
-If the conversion succeeds (i.e. the object is a valid path in one of 
-the current filesystems), then TCL_OK is returned.  Otherwise
-TCL_ERROR is returned, and an error message may
+The filename may begin with
+.QW ~
+(to indicate current user's home directory) or
+.QW ~<user>
+(to indicate any user's home directory).
+.PP
+If the conversion succeeds (i.e. the object is a valid path in one of
+the current filesystems), then \fBTCL_OK\fR is returned.  Otherwise
+\fBTCL_ERROR\fR is returned, and an error message may
 be left in the interpreter.
 .PP
 \fBTcl_FSGetInternalRep\fR extracts the internal representation of a given
@@ -545,12 +643,17 @@ representation is cached, so that repeated calls to this function will
 not require additional conversions.
 .PP
 \fBTcl_FSGetTranslatedPath\fR attempts to extract the translated path
-from the given Tcl_Obj.  
+from the given Tcl_Obj.
 .PP
 If the translation succeeds (i.e. the object is a valid path), then it is
 returned.  Otherwise NULL will be returned, and an error message may be
-left in the interpreter.  A "translated" path is one which contains no
-"~" or "~user" sequences (these have been expanded to their current
+left in the interpreter.  A
+.QW translated
+path is one which contains no
+.QW ~
+or
+.QW ~user
+sequences (these have been expanded to their current
 representation in the filesystem).  The object returned is owned by the
 caller, which must store it or call Tcl_DecrRefCount to ensure memory is
 freed.  This function is of little practical use, and
@@ -560,37 +663,53 @@ better functions to use for most purposes.
 \fBTcl_FSGetTranslatedStringPath\fR does the same as
 \fBTcl_FSGetTranslatedPath\fR, but returns a character string or NULL.
 The string returned is dynamically allocated and owned by the caller,
-which must store it or call ckfree to ensure it is freed.  Again,
+which must store it or call \fBckfree\fR to ensure it is freed.  Again,
 \fBTcl_FSGetNormalizedPath\fR or \fBTcl_GetNativePath\fR are usually
 better functions to use for most purposes.
 .PP
-\fBTcl_FSNewNativePath\fR performs something like that reverse of the
+\fBTcl_FSNewNativePath\fR performs something like the reverse of the
 usual obj->path->nativerep conversions.  If some code retrieves a path
-in native form (from, e.g. readlink or a native dialog), and that path
+in native form (from, e.g. \fBreadlink\fR or a native dialog), and that path
 is to be used at the Tcl level, then calling this function is an
 efficient way of creating the appropriate path object type.
 .PP
-The resulting object is a pure 'path' object, which will only receive 
-a Utf-8 string representation if that is required by some Tcl code.
+The resulting object is a pure
+.QW path
+object, which will only receive
+a UTF-8 string representation if that is required by some Tcl code.
 .PP
-\fBTcl_FSGetNativePath\fR is for use by the Win/Unix/MacOS native
+\fBTcl_FSGetNativePath\fR is for use by the Win/Unix native
 filesystems, so that they can easily retrieve the native (char* or
 TCHAR*) representation of a path.  This function is a convenience
 wrapper around \fBTcl_FSGetInternalRep\fR, and assumes the native
-representation is string-based.  It may be desirable in the future
-to have non-string-based native representations (for example, on
-MacOS, a representation using a fileSpec of FSRef structure would
-probably be more efficient).  On Windows a full Unicode
-representation would allow for paths of unlimited length.  Currently
-the representation is simply a character string containing the
-complete, absolute path in the native encoding.
+representation is string-based.  It may be desirable in the future to
+have non-string-based native representations (for example, on MacOSX, a
+representation using a fileSpec of FSRef structure would probably be
+more efficient).  On Windows a full Unicode representation would allow
+for paths of unlimited length.  Currently the representation is simply a
+character string which may contain either the relative path or a
+complete, absolute normalized path in the native encoding (complex
+conditions dictate which of these will be provided, so neither can be
+relied upon, unless the path is known to be absolute).  If you need a
+native path which must be absolute, then you should ask for the native
+version of a normalized path.  If for some reason a non-absolute,
+non-normalized version of the path is needed, that must be constructed
+separately (e.g. using \fBTcl_FSGetTranslatedPath\fR).
 .PP
 The native representation is cached so that repeated calls to this
-function will not require additional conversions.
+function will not require additional conversions.  The return value is
+owned by Tcl and has a lifetime equivalent to that of the \fIpathPtr\fR
+passed in (unless that is a relative path, in which case the native
+representation may be freed any time the cwd changes).
 .PP
 \fBTcl_FSFileSystemInfo\fR returns a list of two elements.  The first
-element is the name of the filesystem (e.g. "native" or "vfs" or "zip"
-or "prowrap", perhaps), and the second is the particular type of the
+element is the name of the filesystem (e.g.
+.QW native ,
+.QW vfs ,
+.QW zip ,
+or
+.QW prowrap ,
+perhaps), and the second is the particular type of the
 given path within that filesystem (which is filesystem dependent).  The
 second element may be empty if the filesystem does not provide a
 further categorization of files.
@@ -603,25 +722,24 @@ recognized, when NULL will be returned.
 .PP
 If no filesystem will accept the path, NULL is returned.
 .PP
-\fBTcl_FSGetPathType\fR determines whether the given path is relative 
+\fBTcl_FSGetPathType\fR determines whether the given path is relative
 to the current directory, relative to the current volume, or
 absolute.
 .PP
-It returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
-TCL_PATH_VOLUME_RELATIVE
+It returns one of \fBTCL_PATH_ABSOLUTE\fR, \fBTCL_PATH_RELATIVE\fR, or
+\fBTCL_PATH_VOLUME_RELATIVE\fR
 .PP
 \fBTcl_AllocStatBuf\fR allocates a \fITcl_StatBuf\fR on the system
 heap (which may be deallocated by being passed to \fBckfree\fR.)  This
 allows extensions to invoke \fBTcl_FSStat\fR and \fBTcl_FSLStat\fR
 without being dependent on the size of the buffer.  That in turn
 depends on the flags used to build Tcl.
-.PP
-.SH TCL_FILESYSTEM
+.SH "THE VIRTUAL FILESYSTEM API"
 .PP
 A filesystem provides a \fBTcl_Filesystem\fR structure that contains
 pointers to functions that implement the various operations on a
 filesystem; these operations are invoked as needed by the generic
-layer, which generally occurs through the functions listed above.  
+layer, which generally occurs through the functions listed above.
 .PP
 The \fBTcl_Filesystem\fR structures are manipulated using the following
 methods.
@@ -631,13 +749,13 @@ optional piece of data to associated with that filesystem.  On calling
 this function, Tcl will attach the filesystem to the list of known
 filesystems, and it will become fully functional immediately.  Tcl does
 not check if the same filesystem is registered multiple times (and in
-general that is not a good thing to do).  TCL_OK will be returned.
+general that is not a good thing to do).  \fBTCL_OK\fR will be returned.
 .PP
 \fBTcl_FSUnregister\fR removes the given filesystem structure from
-the list of known filesystems, if it is known, and returns TCL_OK.  If
-the filesystem is not currently registered, TCL_ERROR is returned.
+the list of known filesystems, if it is known, and returns \fBTCL_OK\fR.  If
+the filesystem is not currently registered, \fBTCL_ERROR\fR is returned.
 .PP
-\fBTcl_FSData\fR will return the ClientData associated with the given 
+\fBTcl_FSData\fR will return the ClientData associated with the given
 filesystem, if that filesystem is registered.  Otherwise it will
 return NULL.
 .PP
@@ -645,41 +763,42 @@ return NULL.
 the set of mount points for the given (already registered) filesystem
 have changed, and that cached file representations may therefore no
 longer be correct.
+.SS "THE TCL_FILESYSTEM STRUCTURE"
 .PP
 The \fBTcl_Filesystem\fR structure contains the following fields:
 .CS
 typedef struct Tcl_Filesystem {
-    CONST char *\fItypeName\fR;  
-    int \fIstructureLength\fR;   
-    Tcl_FSVersion \fIversion\fR;  
+    const char *\fItypeName\fR;
+    int \fIstructureLength\fR;
+    Tcl_FSVersion \fIversion\fR;
     Tcl_FSPathInFilesystemProc *\fIpathInFilesystemProc\fR;
     Tcl_FSDupInternalRepProc *\fIdupInternalRepProc\fR;
     Tcl_FSFreeInternalRepProc *\fIfreeInternalRepProc\fR;
     Tcl_FSInternalToNormalizedProc *\fIinternalToNormalizedProc\fR;
     Tcl_FSCreateInternalRepProc *\fIcreateInternalRepProc\fR;
-    Tcl_FSNormalizePathProc *\fInormalizePathProc\fR;       
+    Tcl_FSNormalizePathProc *\fInormalizePathProc\fR;
     Tcl_FSFilesystemPathTypeProc *\fIfilesystemPathTypeProc\fR;
     Tcl_FSFilesystemSeparatorProc *\fIfilesystemSeparatorProc\fR;
-    Tcl_FSStatProc *\fIstatProc\fR; 
-    Tcl_FSAccessProc *\fIaccessProc\fR;	    
-    Tcl_FSOpenFileChannelProc *\fIopenFileChannelProc\fR; 
-    Tcl_FSMatchInDirectoryProc *\fImatchInDirectoryProc\fR;  
-    Tcl_FSUtimeProc *\fIutimeProc\fR;       
-    Tcl_FSLinkProc *\fIlinkProc\fR; 
-    Tcl_FSListVolumesProc *\fIlistVolumesProc\fR;	    
+    Tcl_FSStatProc *\fIstatProc\fR;
+    Tcl_FSAccessProc *\fIaccessProc\fR;
+    Tcl_FSOpenFileChannelProc *\fIopenFileChannelProc\fR;
+    Tcl_FSMatchInDirectoryProc *\fImatchInDirectoryProc\fR;
+    Tcl_FSUtimeProc *\fIutimeProc\fR;
+    Tcl_FSLinkProc *\fIlinkProc\fR;
+    Tcl_FSListVolumesProc *\fIlistVolumesProc\fR;
     Tcl_FSFileAttrStringsProc *\fIfileAttrStringsProc\fR;
     Tcl_FSFileAttrsGetProc *\fIfileAttrsGetProc\fR;
     Tcl_FSFileAttrsSetProc *\fIfileAttrsSetProc\fR;
-    Tcl_FSCreateDirectoryProc *\fIcreateDirectoryProc\fR;	    
-    Tcl_FSRemoveDirectoryProc *\fIremoveDirectoryProc\fR;	    
-    Tcl_FSDeleteFileProc *\fIdeleteFileProc\fR;	    
-    Tcl_FSCopyFileProc *\fIcopyFileProc\fR; 
-    Tcl_FSRenameFileProc *\fIrenameFileProc\fR;	    
-    Tcl_FSCopyDirectoryProc *\fIcopyDirectoryProc\fR;	    
-    Tcl_FSLstatProc *\fIlstatProc\fR;	    
-    Tcl_FSLoadFileProc *\fIloadFileProc\fR; 
-    Tcl_FSGetCwdProc *\fIgetCwdProc\fR;     
-    Tcl_FSChdirProc *\fIchdirProc\fR;	    
+    Tcl_FSCreateDirectoryProc *\fIcreateDirectoryProc\fR;
+    Tcl_FSRemoveDirectoryProc *\fIremoveDirectoryProc\fR;
+    Tcl_FSDeleteFileProc *\fIdeleteFileProc\fR;
+    Tcl_FSCopyFileProc *\fIcopyFileProc\fR;
+    Tcl_FSRenameFileProc *\fIrenameFileProc\fR;
+    Tcl_FSCopyDirectoryProc *\fIcopyDirectoryProc\fR;
+    Tcl_FSLstatProc *\fIlstatProc\fR;
+    Tcl_FSLoadFileProc *\fIloadFileProc\fR;
+    Tcl_FSGetCwdProc *\fIgetCwdProc\fR;
+    Tcl_FSChdirProc *\fIchdirProc\fR;
 } Tcl_Filesystem;
 .CE
 .PP
@@ -697,20 +816,26 @@ side-effects which are required by the filesystem; Tcl has less
 efficient emulations it can fall back on).  It is important to note
 that, in the current version of Tcl, most of these fallbacks are only
 used to handle commands initiated in Tcl, not in C. What this means is,
-that if a 'file rename' command is issued in Tcl, and the relevant
+that if a \fBfile rename\fR command is issued in Tcl, and the relevant
 filesystem(s) do not implement their \fITcl_FSRenameFileProc\fR, Tcl's
 core will instead fallback on a combination of other filesystem
 functions (it will use \fITcl_FSCopyFileProc\fR followed by
 \fITcl_FSDeleteFileProc\fR, and if \fITcl_FSCopyFileProc\fR is not
 implemented there is a further fallback).  However, if a
-\fITcl_FSRenameFile\fR command is issued at the C level, no such
+\fITcl_FSRenameFileProc\fR command is issued at the C level, no such
 fallbacks occur.  This is true except for the last four entries in the
-filesystem table (lstat, load, getcwd and chdir)
+filesystem table (\fBlstat\fR, \fBload\fR, \fBgetcwd\fR and \fBchdir\fR)
 for which fallbacks do in fact occur at the C level.
 .PP
-As an example, here is the filesystem lookup table used by the
-"vfs" extension which allows filesystem actions to be implemented
-in Tcl.
+Any functions which take path names in Tcl_Obj form take
+those names in UTF\-8 form.  The filesystem infrastructure API is
+designed to support efficient, cached conversion of these UTF\-8 paths
+to other native representations.
+.SS "EXAMPLE FILESYSTEM DEFINITION"
+.PP
+Here is the filesystem lookup table used by the
+.QW vfs
+extension which allows filesystem actions to be implemented in Tcl.
 .CS
 static Tcl_Filesystem vfsFilesystem = {
     "tclvfs",
@@ -719,14 +844,15 @@ static Tcl_Filesystem vfsFilesystem = {
     &VfsPathInFilesystem,
     &VfsDupInternalRep,
     &VfsFreeInternalRep,
-    /* No internal to normalized, since we don't create any
-     * pure 'internal' Tcl_Obj path representations */
+    /* No internal to normalized, since we don't create
+     * any pure 'internal' Tcl_Obj path representations */
     NULL,
-    /* No create native rep function, since we don't use it
-     * and don't choose to support uses of 'Tcl_FSNewNativePath' */
+    /* No create native rep function, since we don't use
+     * it and don't choose to support uses of
+     * Tcl_FSNewNativePath */
     NULL,
-    /* Normalize path isn't needed - we assume paths only have
-     * one representation */
+    /* Normalize path isn't needed - we assume paths only
+     * have one representation */
     NULL,
     &VfsFilesystemPathType,
     &VfsFilesystemSeparator,
@@ -735,57 +861,57 @@ static Tcl_Filesystem vfsFilesystem = {
     &VfsOpenFileChannel,
     &VfsMatchInDirectory,
     &VfsUtime,
-    /* We choose not to support symbolic links inside our vfs's */
+    /* We choose not to support symbolic links inside our
+     * VFS's */
     NULL,
     &VfsListVolumes,
     &VfsFileAttrStrings,
     &VfsFileAttrsGet,
     &VfsFileAttrsSet,
     &VfsCreateDirectory,
-    &VfsRemoveDirectory, 
+    &VfsRemoveDirectory,
     &VfsDeleteFile,
-    /* No copy file - fallback will occur at Tcl level */
+    /* No copy file; use the core fallback mechanism */
     NULL,
-    /* No rename file - fallback will occur at Tcl level */
+    /* No rename file; use the core fallback mechanism */
+    NULL,
+    /* No copy directory; use the core fallback mechanism */
     NULL,
-    /* No copy directory - fallback will occur at Tcl level */
-    NULL, 
     /* Core will use stat for lstat */
     NULL,
-    /* No load - fallback on core implementation */
+    /* No load; use the core fallback mechanism */
     NULL,
-    /* We don't need a getcwd or chdir - fallback on Tcl's versions */
+    /* We don't need a getcwd or chdir; the core's own
+     * internal value is suitable */
     NULL,
     NULL
 };
 .CE
+.SH "FILESYSTEM INFRASTRUCTURE"
 .PP
-Any functions which take path names in Tcl_Obj form take
-those names in UTF\-8 form.  The filesystem infrastructure API is
-designed to support efficient, cached conversion of these UTF\-8 paths
-to other native representations.
-.SH TYPENAME
+These fields contain basic information about the filesystem structure
+and addresses of functions which are used to associate
+a particular filesystem with a file path, and deal with the internal
+handling of path representations, for example copying and freeing such
+representations.
+.SS TYPENAME
 .PP
 The \fItypeName\fR field contains a null-terminated string that
 identifies the type of the filesystem implemented, e.g.
-\fBnative\fR or \fBzip\fR or \fBvfs\fR.
-.PP
-.SH "STRUCTURE LENGTH"
+.QW native ,
+.QW zip
+or
+.QW vfs .
+.SS "STRUCTURE LENGTH"
 .PP
 The \fIstructureLength\fR field is generally implemented as
 \fIsizeof(Tcl_Filesystem)\fR, and is there to allow easier
 binary backwards compatibility if the size of the structure
 changes in a future Tcl release.
-.SH VERSION
+.SS VERSION
 .PP
 The \fIversion\fR field should be set to \fBTCL_FILESYSTEM_VERSION_1\fR.
-.SH "FILESYSTEM INFRASTRUCTURE"
-.PP
-These fields contain addresses of functions which are used to associate
-a particular filesystem with a file path, and deal with the internal
-handling of path representations, for example copying and freeing such
-representations.
-.SH PATHINFILESYSTEMPROC
+.SS PATHINFILESYSTEMPROC
 .PP
 The \fIpathInFilesystemProc\fR field contains the address of a function
 which is called to determine whether a given path object belongs to this
@@ -793,7 +919,7 @@ filesystem or not.  Tcl will only call the rest of the filesystem
 functions with a path for which this function has returned \fBTCL_OK\fR.
 If the path does not belong, -1 should be returned (the behaviour of Tcl
 for any other return value is not defined).  If \fBTCL_OK\fR is returned,
-then the optional \fBclientDataPtr\fR output parameter can be used to
+then the optional \fIclientDataPtr\fR output parameter can be used to
 return an internal (filesystem specific) representation of the path,
 which will be cached inside the path object, and may be retrieved
 efficiently by the other filesystem functions.  Tcl will simultaneously
@@ -803,10 +929,10 @@ Tcl's internal list of known filesystems.
 .PP
 .CS
 typedef int Tcl_FSPathInFilesystemProc(
-	Tcl_Obj *\fIpathPtr\fR, 
-	ClientData *\fIclientDataPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR,
+        ClientData *\fIclientDataPtr\fR);
 .CE
-.SH DUPINTERNALREPPROC
+.SS DUPINTERNALREPPROC
 .PP
 This function makes a copy of a path's internal representation, and is
 called when Tcl needs to duplicate a path object.  If NULL, Tcl will
@@ -815,18 +941,18 @@ regenerated later.
 .PP
 .CS
 typedef ClientData Tcl_FSDupInternalRepProc(
-	ClientData \fIclientData\fR);
+        ClientData \fIclientData\fR);
 .CE
-.SH FREEINTERNALREPPROC
+.SS FREEINTERNALREPPROC
 Free the internal representation.  This must be implemented if internal
 representations need freeing (i.e. if some memory is allocated when an
 internal representation is generated), but may otherwise be NULL.
 .PP
 .CS
 typedef void Tcl_FSFreeInternalRepProc(
-	ClientData \fIclientData\fR);
+        ClientData \fIclientData\fR);
 .CE
-.SH INTERNALTONORMALIZEDPROC
+.SS INTERNALTONORMALIZEDPROC
 .PP
 Function to convert internal representation to a normalized path.  Only
 required if the filesystem creates pure path objects with no string/path
@@ -835,9 +961,9 @@ representation is the normalized path.
 .PP
 .CS
 typedef Tcl_Obj* Tcl_FSInternalToNormalizedProc(
-	ClientData \fIclientData\fR);
+        ClientData \fIclientData\fR);
 .CE
-.SH CREATEINTERNALREPPROC
+.SS CREATEINTERNALREPPROC
 .PP
 Function to take a path object, and calculate an internal
 representation for it, and store that native representation in the
@@ -847,36 +973,41 @@ immediately creates an internal representation for paths it accepts.
 .PP
 .CS
 typedef ClientData Tcl_FSCreateInternalRepProc(
-	Tcl_Obj *\fIpathPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR);
 .CE
-.SH NORMALIZEPATHPROC       
+.SS NORMALIZEPATHPROC
 .PP
 Function to normalize a path.  Should be implemented for all
 filesystems which can have multiple string representations for the same
-path object.  In Tcl, every 'path' must have a single unique 'normalized'
+path object.  In Tcl, every
+.QW path
+must have a single unique
+.QW normalized
 string representation.  Depending on the filesystem,
 there may be more than one unnormalized string representation which
 refers to that path (e.g. a relative path, a path with different
 character case if the filesystem is case insensitive, a path contain a
-reference to a home directory such as '~', a path containing symbolic
+reference to a home directory such as
+.QW ~ ,
+a path containing symbolic
 links, etc).  If the very last component in the path is a symbolic
 link, it should not be converted into the object it points to (but
 its case or other aspects should be made unique).  All other path
 components should be converted from symbolic links.  This one
-exception is required to agree with Tcl's semantics with 'file
-delete', 'file rename', 'file copy' operating on symbolic links.
-This function may be called with 'nextCheckpoint' either
+exception is required to agree with Tcl's semantics with \fBfile
+delete\fR, \fBfile rename\fR, \fBfile copy\fR operating on symbolic links.
+This function may be called with \fInextCheckpoint\fR either
 at the beginning of the path (i.e. zero), at the end of the path, or
 at any intermediate file separator in the path.  It will never
 point to any other arbitrary position in the path. In the last of
-the three valid cases, the implementation can assume that the path 
+the three valid cases, the implementation can assume that the path
 up to and including the file separator is known and normalized.
 .PP
 .CS
 typedef int Tcl_FSNormalizePathProc(
-	Tcl_Interp *\fIinterp\fR, 
-	Tcl_Obj *\fIpathPtr\fR, 
-	int \fInextCheckpoint\fR);
+        Tcl_Interp *\fIinterp\fR,
+        Tcl_Obj *\fIpathPtr\fR,
+        int \fInextCheckpoint\fR);
 .CE
 .SH "FILESYSTEM OPERATIONS"
 .PP
@@ -890,43 +1021,52 @@ this may be desirable (for example, a read-only filesystem should not
 implement the last four functions, and a filesystem which does not
 support symbolic links need not implement the \fBreadlink\fR function,
 etc.  The Tcl core expects filesystems to behave in this way).
-.SH FILESYSTEMPATHTYPEPROC
+.SS FILESYSTEMPATHTYPEPROC
 .PP
 Function to determine the type of a path in this filesystem.  May be
 NULL, in which case no type information will be available to users of
-the filesystem.  The 'type' is used only for informational purposes,
+the filesystem.  The
+.QW type
+is used only for informational purposes,
 and should be returned as the string representation of the Tcl_Obj
-which is returned.  A typical return value might be "networked", "zip"
-or "ftp".  The Tcl_Obj result is owned by the filesystem and so Tcl will 
-increment the refCount of that object if it wishes to retain a reference 
+which is returned.  A typical return value might be
+.QW networked ,
+.QW zip
+or
+.QW ftp .
+The Tcl_Obj result is owned by the filesystem and so Tcl will
+increment the refCount of that object if it wishes to retain a reference
 to it.
 .PP
 .CS
 typedef Tcl_Obj* Tcl_FSFilesystemPathTypeProc(
-	Tcl_Obj *\fIpathPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR);
 .CE
-.SH FILESYSTEMSEPARATORPROC
+.SS FILESYSTEMSEPARATORPROC
 .PP
 Function to return the separator character(s) for this filesystem.
-Must be implemented, otherwise the \fBfile separator\fR command will not
-function correctly.  The usual return value will be a Tcl_Obj
-containing the string "/".
+This need only be implemented if the filesystem wishes to use a
+different separator than the standard string
+.QW / .
+Amongst other
+uses, it is returned by the \fBfile separator\fR command.  The
+return value should be an object with refCount of zero.
 .PP
 .CS
 typedef Tcl_Obj* Tcl_FSFilesystemSeparatorProc(
-	Tcl_Obj *\fIpathPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR);
 .CE
-.SH STATPROC 
+.SS STATPROC
 .PP
-Function to process a \fBTcl_FSStat()\fR call.  Must be implemented for any
-reasonable filesystem, since many Tcl level commands depend crucially 
+Function to process a \fBTcl_FSStat\fR call.  Must be implemented for any
+reasonable filesystem, since many Tcl level commands depend crucially
 upon it (e.g. \fBfile atime\fR, \fBfile isdirectory\fR, \fBfile size\fR,
 \fBglob\fR).
 .PP
 .CS
 typedef int Tcl_FSStatProc(
-	Tcl_Obj *\fIpathPtr\fR,
-	Tcl_StatBuf *\fIstatPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR,
+        Tcl_StatBuf *\fIstatPtr\fR);
 .CE
 .PP
 The \fBTcl_FSStatProc\fR fills the stat structure \fIstatPtr\fR with
@@ -942,40 +1082,40 @@ last metadata change time.
 If the file represented by \fIpathPtr\fR exists, the
 \fBTcl_FSStatProc\fR returns 0 and the stat structure is filled with
 data.  Otherwise, -1 is returned, and no stat info is given.
-.SH ACCESSPROC	    
+.SS ACCESSPROC
 .PP
-Function to process a \fBTcl_FSAccess()\fR call.  Must be implemented for
-any reasonable filesystem, since many Tcl level commands depend crucially 
+Function to process a \fBTcl_FSAccess\fR call.  Must be implemented for
+any reasonable filesystem, since many Tcl level commands depend crucially
 upon it (e.g. \fBfile exists\fR, \fBfile readable\fR).
 .PP
 .CS
 typedef int Tcl_FSAccessProc(
-	Tcl_Obj *\fIpathPtr\fR,
-	int \fImode\fR);
+        Tcl_Obj *\fIpathPtr\fR,
+        int \fImode\fR);
 .CE
 .PP
 The \fBTcl_FSAccessProc\fR checks whether the process would be allowed
-to read, write or test for existence of the file (or other file system
-object) whose name is pathname.  If pathname is a symbolic link, then
+to read, write or test for existence of the file (or other filesystem
+object) whose name is in \fIpathPtr\fR.  If the pathname refers to a
+symbolic link, then the
 permissions of the file referred by this symbolic link should be tested.
 .PP
 On success (all requested permissions granted), zero is returned.  On
 error (at least one bit in mode asked for a permission that is denied,
 or some other  error occurred), -1 is returned.
+.SS OPENFILECHANNELPROC
 .PP
-.SH OPENFILECHANNELPROC 
-.PP
-Function to process a \fBTcl_FSOpenFileChannel()\fR call.  Must be
+Function to process a \fBTcl_FSOpenFileChannel\fR call.  Must be
 implemented for any reasonable filesystem, since any operations
-which require open or accessing a file's contents will use it 
+which require open or accessing a file's contents will use it
 (e.g. \fBopen\fR, \fBencoding\fR, and many Tk commands).
 .PP
 .CS
 typedef Tcl_Channel Tcl_FSOpenFileChannelProc(
-	Tcl_Interp *\fIinterp\fR,
-	Tcl_Obj *\fIpathPtr\fR,
-	int \fImode\fR,
-	int \fIpermissions\fR);
+        Tcl_Interp *\fIinterp\fR,
+        Tcl_Obj *\fIpathPtr\fR,
+        int \fImode\fR,
+        int \fIpermissions\fR);
 .CE
 .PP
 The \fBTcl_FSOpenFileChannelProc\fR opens a file specified by
@@ -997,20 +1137,20 @@ interpreter; that task is up to the caller of
 the standard channels, \fBstdin, stdout\fR or \fBstderr\fR was
 previously closed, the act of creating the new channel also assigns it
 as a replacement for the standard channel.
-.SH MATCHINDIRECTORYPROC  
+.SS MATCHINDIRECTORYPROC
 .PP
-Function to process a \fBTcl_FSMatchInDirectory()\fR call.  If not
+Function to process a \fBTcl_FSMatchInDirectory\fR call.  If not
 implemented, then glob and recursive copy functionality will be lacking
-in the filesystem (and this may impact commands like 'encoding names' 
+in the filesystem (and this may impact commands like \fBencoding names\fR
 which use glob functionality internally).
 .PP
 .CS
 typedef int Tcl_FSMatchInDirectoryProc(
-	Tcl_Interp* \fIinterp\fR, 
-	Tcl_Obj *\fIresult\fR,
-	Tcl_Obj *\fIpathPtr\fR, 
-	CONST char *\fIpattern\fR, 
-	Tcl_GlobTypeData * \fItypes\fR);
+        Tcl_Interp* \fIinterp\fR,
+        Tcl_Obj *\fIresultPtr\fR,
+        Tcl_Obj *\fIpathPtr\fR,
+        const char *\fIpattern\fR,
+        Tcl_GlobTypeData *\fItypes\fR);
 .CE
 .PP
 The function should return all files or directories (or other filesystem
@@ -1027,12 +1167,13 @@ not, so code should be flexible to both possibilities.
 .PP
 The return value is a standard Tcl result indicating whether an error
 occurred in the matching process.  Error messages are placed in
-\fIinterp\fR; on a \fBTCL_OK\fR result, results should be added to the
-\fIresult\fR object given (which can be assumed to be a valid
-unshared Tcl list).  The matches added
-to \fIresult\fR should include any path prefix given in \fIpathPtr\fR 
-(this usually means they will be absolute path specifications). 
-Note that if no matches are found, that simply leads to an empty 
+\fIinterp\fR, unless \fIinterp\fR in NULL in which case no error
+message need be generated; on a \fBTCL_OK\fR result, results should be 
+added to the \fIresultPtr\fR object given (which can be assumed to be a 
+valid unshared Tcl list).  The matches added
+to \fIresultPtr\fR should include any path prefix given in \fIpathPtr\fR
+(this usually means they will be absolute path specifications).
+Note that if no matches are found, that simply leads to an empty
 result; errors are only signaled for actual file or filesystem
 problems which may occur during the matching process.
 .PP
@@ -1040,14 +1181,14 @@ The \fBTcl_GlobTypeData\fR structure passed in the \fItypes\fR
 parameter contains the following fields:
 .CS
 typedef struct Tcl_GlobTypeData {
-      /* Corresponds to bcdpfls as in 'find -t' */
-      int \fItype\fR;
-      /* Corresponds to file permissions */
-      int \fIperm\fR;
-      /* Acceptable mac type */
-      Tcl_Obj *\fImacType\fR;
-      /* Acceptable mac creator */
-      Tcl_Obj *\fImacCreator\fR;
+        /* Corresponds to bcdpfls as in 'find -t' */
+        int \fItype\fR;
+        /* Corresponds to file permissions */
+        int \fIperm\fR;
+        /* Acceptable mac type */
+        Tcl_Obj *\fImacType\fR;
+        /* Acceptable mac creator */
+        Tcl_Obj *\fImacCreator\fR;
 } Tcl_GlobTypeData;
 .CE
 .PP
@@ -1063,50 +1204,52 @@ which lie within the given \fIpathPtr\fR (and in this case, \fIpathPtr\fR
 need not lie within the same filesystem - different to all other cases in
 which this function is called).  Support for this is critical if Tcl is
 to have seamless transitions between from one filesystem to another.
-.SH UTIMEPROC       
+.SS UTIMEPROC
 .PP
-Function to process a \fBTcl_FSUtime()\fR call.  Required to allow setting
-(not reading) of times with 'file mtime', 'file atime' and the
-open-r/open-w/fcopy implementation of 'file copy'.
+Function to process a \fBTcl_FSUtime\fR call.  Required to allow setting
+(not reading) of times with \fBfile mtime\fR, \fBfile atime\fR and the
+open-r/open-w/fcopy implementation of \fBfile copy\fR.
 .PP
 .CS
 typedef int Tcl_FSUtimeProc(
-	Tcl_Obj *\fIpathPtr\fR, 
-	struct utimbuf *\fItval\fR);
+        Tcl_Obj *\fIpathPtr\fR,
+        struct utimbuf *\fItval\fR);
 .CE
 .PP
 The access and modification times of the file specified by \fIpathPtr\fR
 should be changed to the values given in the \fItval\fR structure.
 .PP
-The return value is a standard Tcl result indicating whether an error
-occurred in the process.
-.SH LINKPROC 
+The return value should be 0 on success and -1 on an error, as
+with the system \fButime\fR.
+.SS LINKPROC
 .PP
-Function to process a \fBTcl_FSLink()\fR call.  Should be implemented
+Function to process a \fBTcl_FSLink\fR call.  Should be implemented
 only if the filesystem supports links, and may otherwise be NULL.
 .PP
 .CS
 typedef Tcl_Obj* Tcl_FSLinkProc(
-	Tcl_Obj *\fIlinkNamePtr\fR,
-	Tcl_Obj *\fItoPtr\fR,
-	int \fIlinkAction\fR);
+        Tcl_Obj *\fIlinkNamePtr\fR,
+        Tcl_Obj *\fItoPtr\fR,
+        int \fIlinkAction\fR);
 .CE
 .PP
 If \fItoPtr\fR is NULL, the function is being asked to read the
 contents of a link.  The result is a Tcl_Obj specifying the contents of
 the link given by \fIlinkNamePtr\fR, or NULL if the link could
-not be read.  The result is owned by the caller, which should call
-Tcl_DecrRefCount when the result is no longer needed.  If \fItoPtr\fR 
-is not NULL, the function should attempt to create a link.  The result
-in this case should be \fItoPtr\fR if the link was successful and NULL
-otherwise.  In this case the result is not owned by the caller. See
+not be read.  The result is owned by the caller (and should therefore
+have its ref count incremented before being returned).  Any callers
+should call Tcl_DecrRefCount on this result when it is no longer needed.
+If \fItoPtr\fR is not NULL, the function should attempt to create a link.
+The result in this case should be \fItoPtr\fR if the link was successful
+and NULL otherwise.  In this case the result is not owned by the caller
+(i.e. no ref count manipulation on either end is needed). See
 the documentation for \fBTcl_FSLink\fR for the correct interpretation
 of the \fIlinkAction\fR flags.
-.SH LISTVOLUMESPROC	    
+.SS LISTVOLUMESPROC
 .PP
 Function to list any filesystem volumes added by this filesystem.
 Should be implemented only if the filesystem adds volumes at the head
-of the filesystem, so that they can be returned by 'file volumes'.
+of the filesystem, so that they can be returned by \fBfile volumes\fR.
 .PP
 .CS
 typedef Tcl_Obj* Tcl_FSListVolumesProc(void);
@@ -1117,7 +1260,9 @@ NULL (or an empty list) if no volumes are provided.  The result object
 is considered to be owned by the filesystem (not by Tcl's core), but
 should be given a refCount for Tcl.  Tcl will use the contents of the
 list and then decrement that refCount.  This allows filesystems to
-choose whether they actually want to retain a 'master list' of volumes
+choose whether they actually want to retain a
+.QW "master list"
+of volumes
 or not (if not, they generate the list on the fly and pass it to Tcl
 with a refCount of 1 and then forget about the list, if yes, then
 they simply increment the refCount of their master list and pass it
@@ -1125,8 +1270,7 @@ to Tcl which will copy the contents and then decrement the count back
 to where it was).
 .PP
 Therefore, Tcl considers return values from this proc to be read-only.
-.PP
-.SH FILEATTRSTRINGSPROC
+.SS FILEATTRSTRINGSPROC
 .PP
 Function to list all attribute strings which are valid for this
 filesystem.  If not implemented the filesystem will not support
@@ -1136,94 +1280,98 @@ not implemented, there is no need to implement the \fBget\fR and \fBset\fR
 methods.
 .PP
 .CS
-typedef CONST char** Tcl_FSFileAttrStringsProc(
-	Tcl_Obj *\fIpathPtr\fR, 
-	Tcl_Obj** \fIobjPtrRef\fR);
+typedef const char** Tcl_FSFileAttrStringsProc(
+        Tcl_Obj *\fIpathPtr\fR,
+        Tcl_Obj** \fIobjPtrRef\fR);
 .CE
 .PP
 The called function may either return an array of strings, or may
-instead return NULL and place a Tcl list into the given objPtrRef.  Tcl
-will take that list and first increment its refCount before using it.
-On completion of that use, Tcl will decrement its refCount.  Hence if
+instead return NULL and place a Tcl list into the given \fIobjPtrRef\fR.  Tcl
+will take that list and first increment its reference count before using it.
+On completion of that use, Tcl will decrement its reference count.  Hence if
 the list should be disposed of by Tcl when done, it should have a
-refCount of zero, and if the list should not be disposed of, the
-filesystem should ensure it retains a refCount on the object.
-.SH FILEATTRSGETPROC
+reference count of zero, and if the list should not be disposed of, the
+filesystem should ensure it returns an object with a reference count
+of at least one.
+.SS FILEATTRSGETPROC
 .PP
-Function to process a \fBTcl_FSFileAttrsGet()\fR call, used by 'file
-attributes'.
+Function to process a \fBTcl_FSFileAttrsGet\fR call, used by \fBfile
+attributes\fR.
 .PP
 .CS
 typedef int Tcl_FSFileAttrsGetProc(
-	Tcl_Interp *\fIinterp\fR,
-	int \fIindex\fR, 
-	Tcl_Obj *\fIpathPtr\fR,
-	Tcl_Obj **\fIobjPtrRef\fR);
+        Tcl_Interp *\fIinterp\fR,
+        int \fIindex\fR,
+        Tcl_Obj *\fIpathPtr\fR,
+        Tcl_Obj **\fIobjPtrRef\fR);
 .CE
 .PP
 Returns a standard Tcl return code.  The attribute value retrieved,
 which corresponds to the \fIindex\fR'th element in the list returned by
-the Tcl_FSFileAttrStringsProc, is a Tcl_Obj placed in objPtrRef (if
-TCL_OK was returned) and is likely to have a refCount of zero.  Either
+the \fBTcl_FSFileAttrStringsProc\fR, is a Tcl_Obj placed in \fIobjPtrRef\fR (if
+\fBTCL_OK\fR was returned) and is likely to have a reference count of zero.  Either
 way we must either store it somewhere (e.g. the Tcl result), or
-Incr/Decr its refCount to ensure it is properly freed.
-.SH FILEATTRSSETPROC
+Incr/Decr its reference count to ensure it is properly freed.
+.SS FILEATTRSSETPROC
 .PP
-Function to process a \fBTcl_FSFileAttrsSet()\fR call, used by 'file
-attributes'.  If the filesystem is read-only, there is no need
+Function to process a \fBTcl_FSFileAttrsSet\fR call, used by \fBfile
+attributes\fR.  If the filesystem is read-only, there is no need
 to implement this.
 .PP
 .CS
 typedef int Tcl_FSFileAttrsSetProc(
-	Tcl_Interp *\fIinterp\fR,
-	int \fIindex\fR, 
-	Tcl_Obj *\fIpathPtr\fR,
-	Tcl_Obj *\fIobjPtr\fR);
+        Tcl_Interp *\fIinterp\fR,
+        int \fIindex\fR,
+        Tcl_Obj *\fIpathPtr\fR,
+        Tcl_Obj *\fIobjPtr\fR);
 .CE
 .PP
 The attribute value of the \fIindex\fR'th element in the list returned by
 the Tcl_FSFileAttrStringsProc should be set to the \fIobjPtr\fR given.
-.SH CREATEDIRECTORYPROC	    
+.SS CREATEDIRECTORYPROC
 .PP
-Function to process a \fBTcl_FSCreateDirectory()\fR call.  Should be
+Function to process a \fBTcl_FSCreateDirectory\fR call.  Should be
 implemented unless the FS is read-only.
 .PP
 .CS
 typedef int Tcl_FSCreateDirectoryProc(
-	Tcl_Obj *\fIpathPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR);
 .CE
 .PP
 The return value is a standard Tcl result indicating whether an error
 occurred in the process.  If successful, a new directory should have
 been added to the filesystem in the location specified by
 \fIpathPtr\fR.
-.SH REMOVEDIRECTORYPROC	    
+.SS REMOVEDIRECTORYPROC
 .PP
-Function to process a 'Tcl_FSRemoveDirectory()' call.  Should be
+Function to process a \fBTcl_FSRemoveDirectory\fR call.  Should be
 implemented unless the FS is read-only.
 .PP
 .CS
 typedef int Tcl_FSRemoveDirectoryProc(
-	Tcl_Obj *\fIpathPtr\fR,
-	int \fIrecursive\fR, 
-	Tcl_Obj **\fIerrorPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR,
+        int \fIrecursive\fR,
+        Tcl_Obj **\fIerrorPtr\fR);
 .CE
 .PP
 The return value is a standard Tcl result indicating whether an error
 occurred in the process.  If successful, the directory specified by
 \fIpathPtr\fR should have been removed from the filesystem.  If the
-\fIrecursive\fR flag is given, then a non-empty directory should
-be deleted without error.  If an error does occur, the name of
-the file or directory which caused the error should be placed in
-\fIerrorPtr\fR.
-.SH DELETEFILEPROC	    
-.PP
-Function to process a \fBTcl_FSDeleteFile()\fR call.  Should be implemented
+\fIrecursive\fR flag is given, then a non-empty directory should be
+deleted without error.  If this flag is not given, then and the
+directory is non-empty a POSIX
+.QW EEXIST
+error should be signaled.  If an
+error does occur, the name of the file or directory which caused the
+error should be placed in \fIerrorPtr\fR.
+.SS DELETEFILEPROC
+.PP
+Function to process a \fBTcl_FSDeleteFile\fR call.  Should be implemented
 unless the FS is read-only.
 .PP
 .CS
 typedef int Tcl_FSDeleteFileProc(
-	Tcl_Obj *\fIpathPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR);
 .CE
 .PP
 The return value is a standard Tcl result indicating whether an error
@@ -1234,73 +1382,82 @@ function and not Tcl_FSRemoveDirectoryProc when needed to delete them
 (even if they are symbolic links to directories).
 .SH "FILESYSTEM EFFICIENCY"
 .PP
-.SH LSTATPROC	    
+These functions need not be implemented for a particular filesystem
+because the core has a fallback implementation available. See each
+individual description for the consequences of leaving the field NULL.
+.SS LSTATPROC
 .PP
-Function to process a \fBTcl_FSLstat()\fR call.  If not implemented, Tcl
+Function to process a \fBTcl_FSLstat\fR call.  If not implemented, Tcl
 will attempt to use the \fIstatProc\fR defined above instead.  Therefore
 it need only be implemented if a filesystem can differentiate between
 \fBstat\fR and \fBlstat\fR calls.
 .PP
 .CS
 typedef int Tcl_FSLstatProc(
-	Tcl_Obj *\fIpathPtr\fR, 
-	Tcl_StatBuf *\fIstatPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR,
+        Tcl_StatBuf *\fIstatPtr\fR);
 .CE
 .PP
-The behavior of this function is very similar to that of the 
-Tcl_FSStatProc defined above, except that if it is applied
+The behavior of this function is very similar to that of the
+\fBTcl_FSStatProc\fR defined above, except that if it is applied
 to a symbolic link, it returns information about the link, not
 about the target file.
+.SS COPYFILEPROC
 .PP
-.SH COPYFILEPROC 
-.PP
-Function to process a \fBTcl_FSCopyFile()\fR call.  If not implemented Tcl
-will fall back on open-r, open-w and fcopy as a copying mechanism.
+Function to process a \fBTcl_FSCopyFile\fR call.  If not implemented Tcl
+will fall back on \fBopen\fR-r, \fBopen\fR-w and \fBfcopy\fR as a
+copying mechanism.
 Therefore it need only be implemented if the filesystem can perform
 that action more efficiently.
 .PP
 .CS
 typedef int Tcl_FSCopyFileProc(
-	Tcl_Obj *\fIsrcPathPtr\fR,
-	Tcl_Obj *\fIdestPathPtr\fR);
+        Tcl_Obj *\fIsrcPathPtr\fR,
+        Tcl_Obj *\fIdestPathPtr\fR);
 .CE
 .PP
 The return value is a standard Tcl result indicating whether an error
 occurred in the copying process.  Note that, \fIdestPathPtr\fR is the
 name of the file which should become the copy of \fIsrcPathPtr\fR. It
 is never the name of a directory into which \fIsrcPathPtr\fR could be
-copied (i.e. the function is much simpler than the Tcl level 'file
-copy' subcommand).  Note that,
+copied (i.e. the function is much simpler than the Tcl level \fBfile
+copy\fR subcommand).  Note that,
 if the filesystem supports symbolic links, Tcl will always call this
-function and not Tcl_FSCopyDirectoryProc when needed to copy them
-(even if they are symbolic links to directories).
-.SH RENAMEFILEPROC	    
-.PP
-Function to process a \fBTcl_FSRenameFile()\fR call.  If not implemented,
+function and not \fIcopyDirectoryProc\fR when needed to copy them
+(even if they are symbolic links to directories).  Finally, if the
+filesystem determines it cannot support the \fBfile copy\fR action,
+calling \fBTcl_SetErrno(EXDEV)\fR and returning a non-\fBTCL_OK\fR
+result will tell Tcl to use its standard fallback mechanisms.
+.SS RENAMEFILEPROC
+.PP
+Function to process a \fBTcl_FSRenameFile\fR call.  If not implemented,
 Tcl will fall back on a copy and delete mechanism.  Therefore it need
 only be implemented if the filesystem can perform that action more
 efficiently.
 .PP
 .CS
 typedef int Tcl_FSRenameFileProc(
-	Tcl_Obj *\fIsrcPathPtr\fR,
-	Tcl_Obj *\fIdestPathPtr\fR);
+        Tcl_Obj *\fIsrcPathPtr\fR,
+        Tcl_Obj *\fIdestPathPtr\fR);
 .CE
 .PP
 The return value is a standard Tcl result indicating whether an error
-occurred in the renaming process.
-.SH COPYDIRECTORYPROC	    
-.PP
-Function to process a \fBTcl_FSCopyDirectory()\fR call.  If not
-implemented, Tcl will fall back on a recursive create-dir, file copy
+occurred in the renaming process.  If the
+filesystem determines it cannot support the \fBfile rename\fR action,
+calling \fBTcl_SetErrno(EXDEV)\fR and returning a non-\fBTCL_OK\fR
+result will tell Tcl to use its standard fallback mechanisms.
+.SS COPYDIRECTORYPROC
+.PP
+Function to process a \fBTcl_FSCopyDirectory\fR call.  If not
+implemented, Tcl will fall back on a recursive \fBfile mkdir\fR, \fBfile copy\fR
 mechanism.  Therefore it need only be implemented if the filesystem can
 perform that action more efficiently.
 .PP
 .CS
 typedef int Tcl_FSCopyDirectoryProc(
-	Tcl_Obj *\fIsrcPathPtr\fR,
-	Tcl_Obj *\fIdestPathPtr\fR, 
-	Tcl_Obj **\fIerrorPtr\fR);
+        Tcl_Obj *\fIsrcPathPtr\fR,
+        Tcl_Obj *\fIdestPathPtr\fR,
+        Tcl_Obj **\fIerrorPtr\fR);
 .CE
 .PP
 The return value is a standard Tcl result indicating whether an error
@@ -1310,33 +1467,42 @@ the file or directory which caused the error should be placed in
 directory-name which should become the mirror-image of
 \fIsrcPathPtr\fR. It is not the name of a directory into which
 \fIsrcPathPtr\fR should be copied (i.e. the function is much simpler
-than the Tcl level 'file copy' subcommand).
-.SH LOADFILEPROC 
-.PP
-Function to process a \fBTcl_FSLoadFile()\fR call.  If not implemented, Tcl
-will fall back on a copy to native-temp followed by a Tcl_FSLoadFile on
+than the Tcl level \fBfile copy\fR subcommand).  Finally, if the
+filesystem determines it cannot support the directory copy action,
+calling \fBTcl_SetErrno(EXDEV)\fR and returning a non-\fBTCL_OK\fR
+result will tell Tcl to use its standard fallback mechanisms.
+.SS LOADFILEPROC
+.PP
+Function to process a \fBTcl_FSLoadFile\fR call.  If not implemented, Tcl
+will fall back on a copy to native-temp followed by a \fBTcl_FSLoadFile\fR on
 that temporary copy.  Therefore it need only be implemented if the
 filesystem can load code directly, or it can be implemented simply to
-return TCL_ERROR to disable load functionality in this filesystem
+return \fBTCL_ERROR\fR to disable load functionality in this filesystem
 entirely.
 .PP
 .CS
 typedef int Tcl_FSLoadFileProc(
-	Tcl_Interp * \fIinterp\fR, 
-	Tcl_Obj *\fIpathPtr\fR, 
-	Tcl_LoadHandle * \fIhandlePtr\fR,
-	Tcl_FSUnloadFileProc * \fIunloadProcPtr\fR);
+        Tcl_Interp *\fIinterp\fR,
+        Tcl_Obj *\fIpathPtr\fR,
+        Tcl_LoadHandle *\fIhandlePtr\fR,
+        Tcl_FSUnloadFileProc *\fIunloadProcPtr\fR);
 .CE
 .PP
 Returns a standard Tcl completion code.  If an error occurs, an error
-message is left in the interp's result.  The function dynamically loads
-a binary code file into memory.  On a successful
-load, the \fIhandlePtr\fR should be filled with a token for 
-the dynamically loaded file, and the \fIunloadProcPtr\fR should be
-filled in with the address of a procedure.  The procedure will be
-called with the given Tcl_LoadHandle as its only parameter when Tcl 
-needs to unload the file.
-.SH UNLOADFILEPROC	    
+message is left in the \fIinterp\fR's result.  The function dynamically loads a
+binary code file into memory.  On a successful load, the \fIhandlePtr\fR
+should be filled with a token for the dynamically loaded file, and the
+\fIunloadProcPtr\fR should be filled in with the address of a procedure.
+The unload procedure will be called with the given \fBTcl_LoadHandle\fR as its
+only parameter when Tcl needs to unload the file.  For example, for the
+native filesystem, the \fBTcl_LoadHandle\fR returned is currently a token
+which can be used in the private \fBTclpFindSymbol\fR to access functions
+in the new code.  Each filesystem is free to define the
+\fBTcl_LoadHandle\fR as it requires.  Finally, if the
+filesystem determines it cannot support the file load action,
+calling \fBTcl_SetErrno(EXDEV)\fR and returning a non-\fBTCL_OK\fR
+result will tell Tcl to use its standard fallback mechanisms.
+.SS UNLOADFILEPROC
 .PP
 Function to unload a previously successfully loaded file.  If load was
 implemented, then this should also be implemented, if there is any
@@ -1344,17 +1510,17 @@ cleanup action required.
 .PP
 .CS
 typedef void Tcl_FSUnloadFileProc(
-	Tcl_LoadHandle \fIloadHandle\fR);
+        Tcl_LoadHandle \fIloadHandle\fR);
 .CE
-.SH GETCWDPROC     
+.SS GETCWDPROC     
 .PP
-Function to process a \fBTcl_FSGetCwd()\fR call.  Most filesystems need not
-implement this.  It will usually only be called once, if 'getcwd' is
-called before 'chdir'.  May be NULL.
+Function to process a \fBTcl_FSGetCwd\fR call.  Most filesystems need not
+implement this.  It will usually only be called once, if \fBgetcwd\fR is
+called before \fBchdir\fR.  May be NULL.
 .PP
 .CS
 typedef Tcl_Obj* Tcl_FSGetCwdProc(
-	Tcl_Interp *\fIinterp\fR);
+        Tcl_Interp *\fIinterp\fR);
 .CE
 .PP
 If the filesystem supports a native notion of a current working
@@ -1362,26 +1528,28 @@ directory (which might perhaps change independent of Tcl), this
 function should return that cwd as the result, or NULL if the current
 directory could not be determined (e.g. the user does not have
 appropriate permissions on the cwd directory).  If NULL is returned, an
-error message is left in the interp's result.
-.PP
-.SH CHDIRPROC	    
+error message is left in the \fIinterp\fR's result.
+.SS CHDIRPROC
 .PP
-Function to process a \fBTcl_FSChdir()\fR call.  If filesystems do not
+Function to process a \fBTcl_FSChdir\fR call.  If filesystems do not
 implement this, it will be emulated by a series of directory access
 checks.  Otherwise, virtual filesystems which do implement it need only
-respond with a positive return result if the dirName is a valid,
+respond with a positive return result if the \fIpathPtr\fR is a valid,
 accessible directory in their filesystem.  They need not remember the
-result, since that will be automatically remembered for use by GetCwd.
+result, since that will be automatically remembered for use by
+\fBTcl_FSGetCwd\fR.
 Real filesystems should carry out the correct action (i.e. call the
-correct system 'chdir' api).
+correct system \fBchdir\fR API).
 .PP
 .CS
 typedef int Tcl_FSChdirProc(
-	Tcl_Obj *\fIpathPtr\fR);
+        Tcl_Obj *\fIpathPtr\fR);
 .CE
 .PP
 The \fBTcl_FSChdirProc\fR changes the applications current working
 directory to the value specified in \fIpathPtr\fR. The function returns
 -1 on error or 0 on success.
+.SH "SEE ALSO"
+cd(n), file(n), load(n), open(n), pwd(n), unload(n)
 .SH KEYWORDS
-stat access filesystem vfs
+stat, access, filesystem, vfs, virtual
diff --git a/doc/FindExec.3 b/doc/FindExec.3
index 9c42f9a..0e225e9 100644
--- a/doc/FindExec.3
+++ b/doc/FindExec.3
@@ -16,10 +16,10 @@ Tcl_FindExecutable, Tcl_GetNameOfExecutable \- identify or return the name of th
 void
 \fBTcl_FindExecutable\fR(\fIargv0\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_GetNameOfExecutable\fR()
 .SH ARGUMENTS
-.AS char *argv0 in
+.AS char *argv0
 .AP char *argv0 in
 The first command-line argument to the program, which gives the
 application's name.
diff --git a/doc/GetCwd.3 b/doc/GetCwd.3
index f8fce52..964e237 100755..100644
--- a/doc/GetCwd.3
+++ b/doc/GetCwd.3
@@ -19,7 +19,7 @@ char *
 int
 \fBTcl_Chdir\fR(\fIpath\fR)
 .SH ARGUMENTS
-.AS Tcl_DString *bufferPtr
+.AS Tcl_DString *bufferPtr in/out
 .AP Tcl_Interp *interp in
 Interpreter in which to report an error, if any.
 .AP Tcl_DString *bufferPtr in/out
@@ -39,7 +39,7 @@ the same functionality as the Tcl \fBpwd\fR command.
 .PP
 \fBTcl_GetCwd\fR returns a pointer to a string specifying the current
 directory, or NULL if the current directory could not be determined.
-If NULL is returned, an error message is left in the interp's result.
+If NULL is returned, an error message is left in the \fIinterp\fR's result.
 Storage for the result string is allocated in bufferPtr; the caller
 must call \fBTcl_DStringFree()\fR when the result is no longer needed.
 The format of the path is UTF\-8.
diff --git a/doc/GetHostName.3 b/doc/GetHostName.3
index 694ac4a..28f3a4f 100644
--- a/doc/GetHostName.3
+++ b/doc/GetHostName.3
@@ -11,7 +11,7 @@ Tcl_GetHostName \- get the name of the local host
 .nf
 \fB#include <tcl.h>\fR
 .sp
-CONST char *
+const char *
 \fBTcl_GetHostName\fR()
 .BE
 
diff --git a/doc/GetIndex.3 b/doc/GetIndex.3
index 54ac034..45d4e9c 100644
--- a/doc/GetIndex.3
+++ b/doc/GetIndex.3
@@ -16,14 +16,12 @@ Tcl_GetIndexFromObj, Tcl_GetIndexFromObjStruct \- lookup string in table of keyw
 int
 \fBTcl_GetIndexFromObj\fR(\fIinterp, objPtr, tablePtr, msg, flags,
 indexPtr\fR)
-.VS
 .sp
 int
 \fBTcl_GetIndexFromObjStruct\fR(\fIinterp, objPtr, structTablePtr, offset,
-msg, flags, indexPtr\fR)
-.VE
+                          msg, flags, indexPtr\fR)
 .SH ARGUMENTS
-.AS "CONST char" **tablePtr
+.AS "const char" *structTablePtr in/out
 .AP Tcl_Interp *interp in
 Interpreter to use for error reporting; if NULL, then no message is
 provided on errors.
@@ -31,25 +29,23 @@ provided on errors.
 The string value of this object is used to search through \fItablePtr\fR.
 The internal representation is modified to hold the index of the matching
 table entry.
-.AP "CONST char" **tablePtr in
+.AP "const char" **tablePtr in
 An array of null-terminated strings.  The end of the array is marked
 by a NULL string pointer.
 Note that references to the \fItablePtr\fR may be retained in the
 internal representation of \fIobjPtr\fR, so this should represent the
 address of a statically-allocated array.
-.AP "CONST VOID" *structTablePtr in
-An array of arbitrary type, typically some \fBstruct\fP type.
+.AP "const void" *structTablePtr in
+An array of arbitrary type, typically some \fBstruct\fR type.
 The first member of the structure must be a null-terminated string.
-The size of the structure is given by \fIoffset\fP.
+The size of the structure is given by \fIoffset\fR.
 Note that references to the \fIstructTablePtr\fR may be retained in the
 internal representation of \fIobjPtr\fR, so this should represent the
 address of a statically-allocated array of structures.
-.VS
 .AP int offset in
 The offset to add to structTablePtr to get to the next entry.
 The end of the array is marked by a NULL string pointer.
-.VE
-.AP "CONST char" *msg in
+.AP "const char" *msg in
 Null-terminated string describing what is being looked up, such as
 \fBoption\fR.  This string is included in error messages.
 .AP int flags in
@@ -72,14 +68,14 @@ the strings in \fItablePtr\fR to find a match.  A match occurs if
 for exactly one of the strings in \fItablePtr\fR and the
 \fBTCL_EXACT\fR flag was not specified; in either case
 the index of the matching entry is stored at \fI*indexPtr\fR
-and TCL_OK is returned.
+and \fBTCL_OK\fR is returned.
 .PP
 If there is no matching entry,
-TCL_ERROR is returned and an error message is left in \fIinterp\fR's
-result if \fIinterp\fR isn't NULL.  \fIMsg\fR is included in the
+\fBTCL_ERROR\fR is returned and an error message is left in \fIinterp\fR's
+result if \fIinterp\fR is not NULL.  \fIMsg\fR is included in the
 error message to indicate what was being looked up.  For example,
 if \fImsg\fR is \fBoption\fR the error message will have a form like
-\fBbad option "firt": must be first, second, or third\fR.
+.QW "\fBbad option \N'34'firt\N'34': must be first, second, or third\fR" .
 .PP
 If \fBTcl_GetIndexFromObj\fR completes successfully it modifies the
 internal representation of \fIobjPtr\fR to hold the address of
@@ -91,17 +87,18 @@ operation.  Note: \fBTcl_GetIndexFromObj\fR assumes that the entries
 in \fItablePtr\fR are static: they must not change between
 invocations.  If the value of \fIobjPtr\fR is the empty string,
 \fBTcl_GetIndexFromObj\fR will treat it as a non-matching value
-and return TCL_ERROR.
-.VS
+and return \fBTCL_ERROR\fR.
 .PP
 \fBTcl_GetIndexFromObjStruct\fR works just like
 \fBTcl_GetIndexFromObj\fR, except that instead of treating
-\fItablePtr\fR as an array of string pointers, it treats it as the
-first in a series of string ptrs that are spaced apart by \fIoffset\fR
-bytes. This is particularly useful when processing things like
+\fItablePtr\fR as an array of string pointers, it treats it as a
+pointer to the first string in a series of strings that have
+\fIoffset\fR bytes between them (i.e. that there is a pointer to the
+first array of characters at \fItablePtr\fR, a pointer to the second
+array of characters at \fItablePtr\fR+\fIoffset\fR bytes, etc.)
+This is particularly useful when processing things like
 \fBTk_ConfigurationSpec\fR, whose string keys are in the same place in
 each of several array elements.
-.VE
 
 .SH "SEE ALSO"
 Tcl_WrongNumArgs
diff --git a/doc/GetInt.3 b/doc/GetInt.3
index 677527a..f77d337 100644
--- a/doc/GetInt.3
+++ b/doc/GetInt.3
@@ -15,62 +15,69 @@ Tcl_GetInt, Tcl_GetDouble, Tcl_GetBoolean \- convert from string to integer, dou
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_GetInt\fR(\fIinterp, string, intPtr\fR)
+\fBTcl_GetInt\fR(\fIinterp, src, intPtr\fR)
 .sp
 int
-\fBTcl_GetDouble\fR(\fIinterp, string, doublePtr\fR)
+\fBTcl_GetDouble\fR(\fIinterp, src, doublePtr\fR)
 .sp
 int
-\fBTcl_GetBoolean\fR(\fIinterp, string, boolPtr\fR)
+\fBTcl_GetBoolean\fR(\fIinterp, src, boolPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *doublePtr
+.AS Tcl_Interp *doublePtr out
 .AP Tcl_Interp *interp in
 Interpreter to use for error reporting.
-.AP "CONST char" *string in
+.AP "const char" *src in
 Textual value to be converted.
 .AP int *intPtr out
-Points to place to store integer value converted from \fIstring\fR.
+Points to place to store integer value converted from \fIsrc\fR.
 .AP double *doublePtr out
 Points to place to store double-precision floating-point
-value converted from \fIstring\fR.
+value converted from \fIsrc\fR.
 .AP int *boolPtr out
-Points to place to store boolean value (0 or 1) converted from \fIstring\fR.
+Points to place to store boolean value (0 or 1) converted from \fIsrc\fR.
 .BE
 
 .SH DESCRIPTION
 .PP
 These procedures convert from strings to integers or double-precision
 floating-point values or booleans (represented as 0- or 1-valued
-integers).  Each of the procedures takes a \fIstring\fR argument,
+integers).  Each of the procedures takes a \fIsrc\fR argument,
 converts it to an internal form of a particular type, and stores
 the converted value at the location indicated by the procedure's
 third argument.  If all goes well, each of the procedures returns
-TCL_OK.  If \fIstring\fR doesn't have the proper syntax for the
-desired type then TCL_ERROR is returned, an error message is left
+\fBTCL_OK\fR.  If \fIsrc\fR does not have the proper syntax for the
+desired type then \fBTCL_ERROR\fR is returned, an error message is left
 in the interpreter's result, and nothing is stored at *\fIintPtr\fR
 or *\fIdoublePtr\fR or *\fIboolPtr\fR.
 .PP
-\fBTcl_GetInt\fR expects \fIstring\fR to consist of a collection
+\fBTcl_GetInt\fR expects \fIsrc\fR to consist of a collection
 of integer digits, optionally signed and optionally preceded by
-white space.  If the first two characters of \fIstring\fR are ``0x''
-then \fIstring\fR is expected to be in hexadecimal form;  otherwise,
-if the first character of \fIstring\fR is ``0'' then \fIstring\fR
-is expected to be in octal form;  otherwise, \fIstring\fR is
+white space.  If the first two characters of \fIsrc\fR
+after the optional white space and sign are
+.QW 0x
+then \fIsrc\fR is expected to be in hexadecimal form;  otherwise,
+if the first such character is
+.QW 0
+then \fIsrc\fR
+is expected to be in octal form;  otherwise, \fIsrc\fR is
 expected to be in decimal form.
 .PP
-\fBTcl_GetDouble\fR expects \fIstring\fR to consist of a floating-point
+\fBTcl_GetDouble\fR expects \fIsrc\fR to consist of a floating-point
 number, which is:  white space;  a sign; a sequence of digits;  a
-decimal point;  a sequence of digits;  the letter ``e'';  and a
-signed decimal exponent.  Any of the fields may be omitted, except that
+decimal point;  a sequence of digits;  the letter
+.QW e ;
+a signed decimal exponent;  and more white space.
+Any of the fields may be omitted, except that
 the digits either before or after the decimal point must be present
-and if the ``e'' is present then it must be followed by the
-exponent number.
+and if the
+.QW e
+is present then it must be followed by the exponent number.
 .PP
-\fBTcl_GetBoolean\fR expects \fIstring\fR to specify a boolean
-value.  If \fIstring\fR is any of \fB0\fR, \fBfalse\fR,
+\fBTcl_GetBoolean\fR expects \fIsrc\fR to specify a boolean
+value.  If \fIsrc\fR is any of \fB0\fR, \fBfalse\fR,
 \fBno\fR, or \fBoff\fR, then \fBTcl_GetBoolean\fR stores a zero
 value at \fI*boolPtr\fR.
-If \fIstring\fR is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or \fBon\fR,
+If \fIsrc\fR is any of \fB1\fR, \fBtrue\fR, \fByes\fR, or \fBon\fR,
 then 1 is stored at \fI*boolPtr\fR.
 Any of these values may be abbreviated, and upper-case spellings
 are also acceptable.
diff --git a/doc/GetOpnFl.3 b/doc/GetOpnFl.3
index e914b8f..38aa976 100644
--- a/doc/GetOpnFl.3
+++ b/doc/GetOpnFl.3
@@ -8,29 +8,29 @@
 .TH Tcl_GetOpenFile 3 8.0 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_GetOpenFile \- Get a standard IO File * handle from a channel. (Unix only)
+Tcl_GetOpenFile \- Return a FILE* for a channel registered in the given interpreter (Unix only)
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_GetOpenFile\fR(\fIinterp, string, write, checkUsage, filePtr\fR)
+\fBTcl_GetOpenFile\fR(\fIinterp, chanID, write, checkUsage, filePtr\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_Interp checkUsage
+.AS Tcl_Interp checkUsage out
 .AP Tcl_Interp *interp in
 Tcl interpreter from which file handle is to be obtained.
-.AP "CONST char" *string in
+.AP "const char" *chanID in
 String identifying channel, such as \fBstdin\fR or \fBfile4\fR.
 .AP int write in
 Non-zero means the file will be used for writing, zero means it will
 be used for reading.
 .AP int checkUsage in
-If non-zero, then an error will be generated if the file wasn't opened
+If non-zero, then an error will be generated if the file was not opened
 for the access indicated by \fIwrite\fR.
 .AP ClientData *filePtr out
 Points to word in which to store pointer to FILE structure for
-the file given by \fIstring\fR.
+the file given by \fIchanID\fR.
 .BE
 
 .SH DESCRIPTION
@@ -44,17 +44,15 @@ be used for reading or writing.
 In some cases, such as a channel that connects to a pipeline of
 subprocesses, different FILE pointers will be returned for reading
 and writing.
-\fBTcl_GetOpenFile\fR normally returns TCL_OK.
-If an error occurs in \fBTcl_GetOpenFile\fR (e.g. \fIstring\fR didn't
-make any sense or \fIcheckUsage\fR was set and the file wasn't opened
-for the access specified by \fIwrite\fR) then TCL_ERROR is returned
+\fBTcl_GetOpenFile\fR normally returns \fBTCL_OK\fR.
+If an error occurs in \fBTcl_GetOpenFile\fR (e.g. \fIchanID\fR did not
+make any sense or \fIcheckUsage\fR was set and the file was not opened
+for the access specified by \fIwrite\fR) then \fBTCL_ERROR\fR is returned
 and the interpreter's result will contain an error message.
 In the current implementation \fIcheckUsage\fR is ignored and consistency
 checks are always performed.
-.VS
 .PP
 Note that this interface is only supported on the Unix platform.
-.VE
 
 .SH KEYWORDS
 channel, file handle, permissions, pipeline, read, write
diff --git a/doc/GetStdChan.3 b/doc/GetStdChan.3
index e0f754a..045d15a 100644
--- a/doc/GetStdChan.3
+++ b/doc/GetStdChan.3
@@ -20,7 +20,7 @@ Tcl_Channel
 \fBTcl_SetStdChannel\fR(\fIchannel, type\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_Channel channel in
+.AS Tcl_Channel channel
 .AP int type in
 The identifier for the standard channel to retrieve or modify.  Must be one of
 \fBTCL_STDIN\fR, \fBTCL_STDOUT\fR, or \fBTCL_STDERR\fR.
@@ -76,7 +76,6 @@ standard error being last.
 .PP
 See \fBTcl_StandardChannels\fR for a general treatise about standard
 channels and the behaviour of the Tcl library with regard to them.
-.PP
 
 .SH "SEE ALSO"
 Tcl_Close(3), Tcl_CreateChannel(3), Tcl_Main(3), tclsh(1)
diff --git a/doc/GetTime.3 b/doc/GetTime.3
index 92457bd..14a9e8c 100644
--- a/doc/GetTime.3
+++ b/doc/GetTime.3
@@ -1,5 +1,5 @@
 '\"
-'\" Copyright (c) 2001 by Kevin B. Kenny.
+'\" Copyright (c) 2001 by Kevin B. Kenny <kennykb@acm.org>.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -8,16 +8,39 @@
 .TH Tcl_GetTime 3 8.4 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_GetTime \- get date and time
+Tcl_GetTime, Tcl_SetTimeProc, Tcl_QueryTimeProc \- get date and time
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
 .sp
-\fBTcl_GetTime\fR(\fI timePtr \fR)
+\fBTcl_GetTime\fR(\fItimePtr\fR)
+.sp
+\fBTcl_SetTimeProc\fR(\fIgetProc, scaleProc, clientData\fR)
+.sp
+\fBTcl_QueryTimeProc\fR(\fIgetProcPtr, scaleProcPtr, clientDataPtr\fR)
 .SH ARGUMENTS
-.AS "Tcl_Time *" timePtr
+.AS "Tcl_Time *" timePtr out
 .AP "Tcl_Time *" timePtr out
 Points to memory in which to store the date and time information.
+.AS "Tcl_GetTimeProc *" getProc in
+.AP "Tcl_GetTimeProc *" getProc in
+Pointer to handler function replacing \fBTcl_GetTime\fR's access to the OS.
+.AS "Tcl_ScaleTimeProc *" scaleProc in
+.AP "Tcl_ScaleTimeProc *" scaleProc in
+Pointer to handler function for the conversion of time delays in the
+virtual domain to real-time.
+.AS "ClientData *" clientData in
+.AP "ClientData *" clientData in
+Value passed through to the two handler functions.
+.AS "Tcl_GetTimeProc **" getProcPtr inout
+.AP "Tcl_GetTimeProc **" getProcPtr inout
+Pointer to place the currently registered get handler function into.
+.AS "Tcl_ScaleTimeProc **" scaleProcPtr inout
+.AP "Tcl_ScaleTimeProc **" scaleProcPtr inout
+Pointer to place the currently registered scale handler function into.
+.AS "ClientData **" clientDataPtr inout
+.AP "ClientData **" clientDataPtr inout
+Pointer to place the currently registered pass-through value into.
 .BE
 .SH DESCRIPTION
 .PP
@@ -45,6 +68,32 @@ computer system.  On multiprocessor variants of Windows, this number
 may be limited to the 10- or 20-ms granularity of the system clock.
 (On single-processor Windows systems, the \fIusec\fR field is derived
 from a performance counter and is highly precise.)
+.PP
+The \fBTcl_SetTime\fR function registers two related handler functions
+with the core. The first handler function is a replacement for
+\fBTcl_GetTime\fR, or rather the OS access made by
+\fBTcl_GetTime\fR. The other handler function is used by the Tcl
+notifier to convert wait/block times from the virtual domain into real
+time.
+.PP
+The \fBTcl_QueryTime\fR function returns the currently registered
+handler functions. If no external handlers were set then this will
+return the standard handlers accessing and processing the native time
+of the OS. The arguments to the function are allowed to be NULL; and
+any argument which is NULL is ignored and not set.
+.PP
+Any handler pair specified has to return data which is consistent
+between them. In other words, setting one handler of the pair to
+something assuming a 10-times slowdown, and the other handler of the
+pair to something assuming a two-times slowdown is wrong and not
+allowed.
+.PP
+The set handler functions are allowed to run the delivered time
+backwards, however this should be avoided. We have to allow it as the
+native time can run backwards as the user can fiddle with the system
+time one way or other. Note that the insertion of the hooks will not
+change the behaviour of the Tcl core with regard to this situation,
+i.e. the existing behaviour is retained.
 .SH "SEE ALSO"
 clock
 .SH KEYWORDS
diff --git a/doc/GetVersion.3 b/doc/GetVersion.3
index 4fa26f4..47034d0 100755..100644
--- a/doc/GetVersion.3
+++ b/doc/GetVersion.3
@@ -15,6 +15,7 @@ Tcl_GetVersion \- get the version of the library at runtime
 .sp
 \fBTcl_GetVersion\fR(\fImajor, minor, patchLevel, type\fR)
 .SH ARGUMENTS
+.AS Tcl_ReleaseType *patchLevel out
 .AP int *major out
 Major version number of the Tcl library.
 .AP int *minor out
diff --git a/doc/Hash.3 b/doc/Hash.3
index 1f6040a..78b8459 100644
--- a/doc/Hash.3
+++ b/doc/Hash.3
@@ -44,21 +44,21 @@ Tcl_HashEntry *
 Tcl_HashEntry *
 \fBTcl_NextHashEntry\fR(\fIsearchPtr\fR)
 .sp
-CONST char *
+char *
 \fBTcl_HashStats\fR(\fItablePtr\fR)
 .SH ARGUMENTS
-.AS Tcl_HashSearch *searchPtr
+.AS Tcl_HashKeyType *searchPtr out
 .AP Tcl_HashTable *tablePtr in
 Address of hash table structure (for all procedures but
 \fBTcl_InitHashTable\fR, this must have been initialized by
 previous call to \fBTcl_InitHashTable\fR).
 .AP int keyType in
 Kind of keys to use for new hash table.  Must be either
-TCL_STRING_KEYS, TCL_ONE_WORD_KEYS, TCL_CUSTOM_TYPE_KEYS,
-TCL_CUSTOM_PTR_KEYS, or an integer value greater than 1.
+\fBTCL_STRING_KEYS\fR, \fBTCL_ONE_WORD_KEYS\fR, \fBTCL_CUSTOM_TYPE_KEYS\fR,
+\fBTCL_CUSTOM_PTR_KEYS\fR, or an integer value greater than 1.
 .AP Tcl_HashKeyType *typePtr in
 Address of structure which defines the behaviour of the hash table.
-.AP "CONST char" *key in
+.AP "const char" *key in
 Key to use for probe into table.  Exact form depends on
 \fIkeyType\fR used to create table.
 .AP int *newPtr out
@@ -86,7 +86,9 @@ STRUCTURE\fR below). All of the keys in a given table have the same
 form, which is specified when the table is initialized.
 .PP
 The value of a hash table entry can be anything that fits in the same
-space as a ``char *'' pointer.  Values for hash table entries are
+space as a
+.QW "char *"
+pointer.  Values for hash table entries are
 managed entirely by clients, not by the hash module itself.  Typically
 each entry's value is a pointer to a data structure managed by client
 code.
@@ -122,8 +124,10 @@ They are passed to hashing routines using the address of the
 first character of the string.
 .IP \fBTCL_ONE_WORD_KEYS\fR 25
 Keys are single-word values;  they are passed to hashing routines
-and stored in hash table entries as ``char *'' values.
-The pointer value is the key;  it need not (and usually doesn't)
+and stored in hash table entries as
+.QW "char *"
+values.
+The pointer value is the key;  it need not (and usually does not)
 actually point to a string.
 .IP \fBTCL_CUSTOM_TYPE_KEYS\fR 25
 Keys are of arbitrary type, and are stored in the entry. Hashing
@@ -138,7 +142,9 @@ structure is described in the section
 .IP \fIother\fR 25
 If \fIkeyType\fR is not one of the above,
 then it must be an integer value greater than 1.
-In this case the keys will be arrays of ``int'' values, where
+In this case the keys will be arrays of
+.QW int
+values, where
 \fIkeyType\fR gives the number of ints in each key.
 This allows structures to be used as keys.
 All keys must have the same size.
@@ -159,7 +165,7 @@ before deleting the table.
 .PP
 \fBTcl_CreateHashEntry\fR locates the entry corresponding to a
 particular key, creating a new entry in the table if there
-wasn't already one with the given key.
+was not already one with the given key.
 If an entry already existed with the given key then \fI*newPtr\fR
 is set to zero.
 If a new entry was created, then \fI*newPtr\fR is set to a non-zero
@@ -175,28 +181,34 @@ the client is responsible for any cleanup associated with the
 entry's value, such as freeing a structure that it points to.
 .PP
 \fBTcl_FindHashEntry\fR is similar to \fBTcl_CreateHashEntry\fR
-except that it doesn't create a new entry if the key doesn't exist;
+except that it does not create a new entry if the key doesn't exist;
 instead, it returns NULL as result.
 .PP
 \fBTcl_GetHashValue\fR and \fBTcl_SetHashValue\fR are used to
 read and write an entry's value, respectively.
-Values are stored and retrieved as type ``ClientData'', which is
+Values are stored and retrieved as type
+.QW ClientData ,
+which is
 large enough to hold a pointer value.  On almost all machines this is
 large enough to hold an integer value too.
 .PP
 \fBTcl_GetHashKey\fR returns the key for a given hash table entry,
-either as a pointer to a string, a one-word (``char *'') key, or
+either as a pointer to a string, a one-word
+.PQ "char *"
+key, or
 as a pointer to the first word of an array of integers, depending
 on the \fIkeyType\fR used to create a hash table.
 In all cases \fBTcl_GetHashKey\fR returns a result with type
-``char *''.
+.QW "char *" .
 When the key is a string or array, the result of \fBTcl_GetHashKey\fR
 points to information in the table entry;  this information will
 remain valid until the entry is deleted or its table is deleted.
 .PP
 \fBTcl_FirstHashEntry\fR and \fBTcl_NextHashEntry\fR may be used
 to scan all of the entries in a hash table.
-A structure of type ``Tcl_HashSearch'', provided by the client,
+A structure of type
+.QW Tcl_HashSearch ,
+provided by the client,
 is used to keep track of progress through the table.
 \fBTcl_FirstHashEntry\fR initializes the search record and
 returns the first entry in the table (or NULL if the table is
@@ -207,9 +219,10 @@ NULL if the end of the table has been reached.
 A call to \fBTcl_FirstHashEntry\fR followed by calls to
 \fBTcl_NextHashEntry\fR will return each of the entries in
 the table exactly once, in an arbitrary order.
-It is unadvisable to modify the structure of the table, e.g.
-by creating or deleting entries, while the search is in
-progress.
+It is inadvisable to modify the structure of the table, e.g.
+by creating or deleting entries, while the search is in progress,
+with the exception of deleting the entry returned by
+\fBTcl_FirstHashEntry\fR or \fBTcl_NextHashEntry\fR.
 .PP
 \fBTcl_HashStats\fR returns a dynamically-allocated string with
 overall information about a hash table, such as the number of
@@ -228,10 +241,10 @@ to any of the fields of any of the hash-related data structures;
 use the procedures and macros defined here.
 .SH "THE TCL_HASHKEYTYPE STRUCTURE"
 .PP
-Extension writers can define new hash key types by defining four
-procedures, initializing a Tcl_HashKeyType structure to describe
-the type, and calling \fBTcl_InitCustomHashTable\fR.
-The \fBTcl_HashKeyType\fR structure is defined as follows:
+Extension writers can define new hash key types by defining four procedures,
+initializing a \fBTcl_HashKeyType\fR structure to describe the type, and
+calling \fBTcl_InitCustomHashTable\fR. The \fBTcl_HashKeyType\fR structure is
+defined as follows:
 .CS
 typedef struct Tcl_HashKeyType {
     int \fIversion\fR;
@@ -243,61 +256,71 @@ typedef struct Tcl_HashKeyType {
 } Tcl_HashKeyType;
 .CE
 .PP
-The \fIversion\fR member is the version of the table. If this
-structure is extended in future then the version can be used
-to distinguish between different structures. It should be set
-to \fBTCL_HASH_KEY_TYPE_VERSION\fR.
+The \fIversion\fR member is the version of the table. If this structure is
+extended in future then the version can be used to distinguish between
+different structures. It should be set to \fBTCL_HASH_KEY_TYPE_VERSION\fR.
 .PP
-The \fIflags\fR member is one or more of the following values OR'ed together:
+The \fIflags\fR member is 0 or one or more of the following values OR'ed
+together:
 .IP \fBTCL_HASH_KEY_RANDOMIZE_HASH\fR 25
-There are some things, pointers for example which don't hash well 
-because they do not use the lower bits. If this flag is set then the
-hash table will attempt to rectify this by randomising the bits and 
-then using the upper N bits as the index into the table.
+There are some things, pointers for example which do not hash well because
+they do not use the lower bits. If this flag is set then the hash table will
+attempt to rectify this by randomizing the bits and then using the upper N
+bits as the index into the table.
+.IP \fBTCL_HASH_KEY_SYSTEM_HASH\fR 25
+.VS 8.5
+This flag forces Tcl to use the memory allocation procedures provided by the
+operating system when allocating and freeing memory used to store the hash
+table data structures, and not any of Tcl's own customized memory allocation
+routines. This is important if the hash table is to be used in the
+implementation of a custom set of allocation routines, or something that a
+custom set of allocation routines might depend on, in order to avoid any
+circular dependency.
+.VE 8.5
 .PP
-The \fIhashKeyProc\fR member contains the address of a function 
-called to calculate a hash value for the key.
+The \fIhashKeyProc\fR member contains the address of a function called to
+calculate a hash value for the key.
 .CS
 typedef unsigned int (Tcl_HashKeyProc) (
-    Tcl_HashTable *\fItablePtr\fR,
-    VOID *\fIkeyPtr\fR);
+        Tcl_HashTable *\fItablePtr\fR,
+        void *\fIkeyPtr\fR);
 .CE
-If this is NULL then \fIkeyPtr\fR is used and 
+If this is NULL then \fIkeyPtr\fR is used and
 \fBTCL_HASH_KEY_RANDOMIZE_HASH\fR is assumed.
 .PP
-The \fIcompareKeysProc\fR member contains the address of a function 
-called to compare two keys.
+The \fIcompareKeysProc\fR member contains the address of a function called to
+compare two keys.
 .CS
-typedef int (Tcl_CompareHashKeysProc) (VOID *\fIkeyPtr\fR,
-    Tcl_HashEntry *\fIhPtr\fR);
+typedef int (Tcl_CompareHashKeysProc) (
+        void *\fIkeyPtr\fR,
+        Tcl_HashEntry *\fIhPtr\fR);
 .CE
-If this is NULL then the \fIkeyPtr\fR pointers are compared.
-If the keys don't match then the function returns 0, otherwise
-it returns 1.
+If this is NULL then the \fIkeyPtr\fR pointers are compared. If the keys do
+not match then the function returns 0, otherwise it returns 1.
 .PP
-The \fIallocEntryProc\fR member contains the address of a function 
-called to allocate space for an entry and initialise the key.
+The \fIallocEntryProc\fR member contains the address of a function called to
+allocate space for an entry and initialize the key and clientData.
 .CS
 typedef Tcl_HashEntry *(Tcl_AllocHashEntryProc) (
-    Tcl_HashTable *\fItablePtr\fR, VOID *\fIkeyPtr\fR);
+        Tcl_HashTable *\fItablePtr\fR,
+        void *\fIkeyPtr\fR);
 .CE
 If this is NULL then Tcl_Alloc is used to allocate enough space for a
-Tcl_HashEntry and the key pointer is assigned to key.oneWordValue.
-String keys and array keys use this function to allocate enough 
-space for the entry and the key in one block, rather than doing
-it in two blocks. This saves space for a pointer to the key from
-the entry and another memory allocation. Tcl_Obj * keys use this 
-function to allocate enough space for an entry and increment the 
-reference count on the object.
-If 
+Tcl_HashEntry, the key pointer is assigned to key.oneWordValue and the
+clientData is set to NULL. String keys and array keys use this function to
+allocate enough space for the entry and the key in one block, rather than
+doing it in two blocks. This saves space for a pointer to the key from the
+entry and another memory allocation. Tcl_Obj* keys use this function to
+allocate enough space for an entry and increment the reference count on the
+object.
 .PP
-The \fIfreeEntryProc\fR member contains the address of a function 
-called to free space for an entry.
+The \fIfreeEntryProc\fR member contains the address of a function called to
+free space for an entry.
 .CS
 typedef void (Tcl_FreeHashEntryProc) (Tcl_HashEntry *\fIhPtr\fR);
 .CE
-If this is NULL then Tcl_Free is used to free the space for the 
-entry. Tcl_Obj * keys use this function to decrement the
-reference count on the object.
+If this is NULL then Tcl_Free is used to free the space for the entry.
+Tcl_Obj* keys use this function to decrement the reference count on the
+object.
 .SH KEYWORDS
 hash table, key, lookup, search, value
diff --git a/doc/Init.3 b/doc/Init.3
index fdc66c7..f421479 100644
--- a/doc/Init.3
+++ b/doc/Init.3
@@ -14,15 +14,16 @@ Tcl_Init \- find and source initialization script
 int
 \fBTcl_Init\fR(\fIinterp\fR)
 .SH ARGUMENTS
+.AS Tcl_Interp *interp
 .AP Tcl_Interp *interp in
 Interpreter to initialize.
 .BE
 
 .SH DESCRIPTION
 .PP
-\fBTcl_Init\fR is a helper procedure that finds and \fBsource\fR's the
+\fBTcl_Init\fR is a helper procedure that finds and \fBsource\fRs the
 \fBinit.tcl\fR script, which should exist somewhere on the Tcl library
-path.  
+path.
 .PP
 \fBTcl_Init\fR is typically called from \fBTcl_AppInit\fR procedures.
 
diff --git a/doc/InitStubs.3 b/doc/InitStubs.3
index e43d23e..fe10a59 100644
--- a/doc/InitStubs.3
+++ b/doc/InitStubs.3
@@ -13,13 +13,13 @@ Tcl_InitStubs \- initialize the Tcl stubs mechanism
 .nf
 \fB#include <tcl.h>\fR
 .sp
-CONST char *
+const char *
 \fBTcl_InitStubs\fR(\fIinterp, version, exact\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *interp in
+.AS Tcl_Interp *interp
 .AP Tcl_Interp *interp in
 Tcl interpreter handle.
-.AP "CONST char" *version in
+.AP "const char" *version in
 A version string consisting of one or more decimal numbers
 separated by dots.
 .AP int exact in
@@ -59,13 +59,13 @@ steps:
 Call \fBTcl_InitStubs\fR in the extension before calling any other
 Tcl functions.
 .IP 2) 5
-Define the USE_TCL_STUBS symbol.  Typically, you would include the
--DUSE_TCL_STUBS flag when compiling the extension.
+Define the \fBUSE_TCL_STUBS\fR symbol.  Typically, you would include the
+\fB\-DUSE_TCL_STUBS\fR flag when compiling the extension.
 .IP 3) 5
 Link the extension with the Tcl stubs library instead of the standard
 Tcl library.  On Unix platforms, the library name is
-\fIlibtclstub8.4.a\fR; on Windows platforms, the library name is
-\fItclstub84.lib\fR.
+\fIlibtclstub8.5.a\fR; on Windows platforms, the library name is
+\fItclstub85.lib\fR.
 .PP
 If the extension also requires the Tk API, it must also call
 \fBTk_InitStubs\fR to initialize the Tk stubs interface and link
diff --git a/doc/IntObj.3 b/doc/IntObj.3
index 15b6bd9..5cf677d 100644
--- a/doc/IntObj.3
+++ b/doc/IntObj.3
@@ -5,10 +5,10 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH Tcl_IntObj 3 8.0 Tcl "Tcl Library Procedures"
+.TH Tcl_IntObj 3 8.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_NewIntObj, Tcl_NewLongObj, Tcl_NewWideIntObj, Tcl_SetIntObj, Tcl_SetLongObj, Tcl_SetWideIntObj, Tcl_GetIntFromObj, Tcl_GetLongFromObj, Tcl_GetWideIntFromObj \- manipulate Tcl objects as integers and wide integers
+Tcl_NewIntObj, Tcl_NewLongObj, Tcl_NewWideIntObj, Tcl_SetIntObj, Tcl_SetLongObj, Tcl_SetWideIntObj, Tcl_GetIntFromObj, Tcl_GetLongFromObj, Tcl_GetWideIntFromObj, Tcl_NewBignumObj, Tcl_SetBignumObj, Tcl_GetBignumFromObj, Tcl_TakeBignumFromObj \- manipulate Tcl objects as integer values
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -19,18 +19,14 @@ Tcl_Obj *
 Tcl_Obj *
 \fBTcl_NewLongObj\fR(\fIlongValue\fR)
 .sp
-.VS 8.4
 Tcl_Obj *
 \fBTcl_NewWideIntObj\fR(\fIwideValue\fR)
-.VE 8.4
 .sp
 \fBTcl_SetIntObj\fR(\fIobjPtr, intValue\fR)
 .sp
 \fBTcl_SetLongObj\fR(\fIobjPtr, longValue\fR)
 .sp
-.VS 8.4
 \fBTcl_SetWideIntObj\fR(\fIobjPtr, wideValue\fR)
-.VE 8.4
 .sp
 int
 \fBTcl_GetIntFromObj\fR(\fIinterp, objPtr, intPtr\fR)
@@ -38,110 +34,127 @@ int
 int
 \fBTcl_GetLongFromObj\fR(\fIinterp, objPtr, longPtr\fR)
 .sp
-.VS 8.4
 int
 \fBTcl_GetWideIntFromObj\fR(\fIinterp, objPtr, widePtr\fR)
-.VE 8.4
+.sp
+.sp
+.VS 8.5
+\fB#include <tclTomMath.h>\fR
+.sp
+Tcl_Obj *
+\fBTcl_NewBignumObj\fR(\fIbigValue\fR)
+.sp
+\fBTcl_SetBignumObj\fR(\fIobjPtr, bigValue\fR)
+.sp
+int
+\fBTcl_GetBignumFromObj\fR(\fIinterp, objPtr, bigValue\fR)
+.sp
+int
+\fBTcl_TakeBignumFromObj\fR(\fIinterp, objPtr, bigValue\fR)
+.sp
+int
+\fBTcl_InitBignumFromDouble\fR(\fIinterp, doubleValue, bigValue\fR)
+.VE 8.5
 .SH ARGUMENTS
-.AS Tcl_WideInt *interp
+.AS Tcl_WideInt doubleValue in/out
 .AP int intValue in
-Integer value used to initialize or set an integer object.
+Integer value used to initialize or set a Tcl object.
 .AP long longValue in
-Long integer value used to initialize or set an integer object.
+Long integer value used to initialize or set a Tcl object.
 .AP Tcl_WideInt wideValue in
-.VS 8.4
-Wide integer value (minimum 64-bits wide where supported by the
-compiler) used to initialize or set a wide integer object.
-.VE 8.4
+Wide integer value used to initialize or set a Tcl object.
 .AP Tcl_Obj *objPtr in/out
-For \fBTcl_SetIntObj\fR, \fBTcl_SetLongObj\fR, and
-.VS 8.4
-\fBTcl_SetWideIntObj\fR, this points to the object to be converted to
-integer type.  For \fBTcl_GetIntFromObj\fR, \fBTcl_GetLongFromObj\fR,
-and \fBTcl_GetWideIntFromObj\fR, this refers to the object from which
-to get an integer or long integer value; if \fIobjPtr\fR does not
-already point to an integer object (or a wide integer object in the
-case of \fBTcl_SetWideIntObj\fR and \fBTcl_GetWideIntFromObj\fR,) an
-.VE 8.4
-attempt will be made to convert it to one.
+For \fBTcl_SetIntObj\fR, \fBTcl_SetLongObj\fR, \fBTcl_SetWideIntObj\fR,
+and \fBTcl_SetBignumObj\fR, this points to the object in which to store an
+integral value.  For \fBTcl_GetIntFromObj\fR, \fBTcl_GetLongFromObj\fR,
+\fBTcl_GetWideIntFromObj\fR, \fBTcl_GetBignumFromObj\fR, and
+\fBTcl_TakeBignumFromObj\fR, this refers to the object from which
+to retrieve an integral value.
 .AP Tcl_Interp *interp in/out
-If an error occurs during conversion,
-an error message is left in the interpreter's result object
-unless \fIinterp\fR is NULL.
+When non-NULL, an error message is left here when integral value
+retrieval fails.
 .AP int *intPtr out
-Points to place to store the integer value
-obtained by \fBTcl_GetIntFromObj\fR from \fIobjPtr\fR.
+Points to place to store the integer value retrieved from \fIobjPtr\fR.
 .AP long *longPtr out
-Points to place to store the long integer value
-obtained by \fBTcl_GetLongFromObj\fR from \fIobjPtr\fR.
+Points to place to store the long integer value retrieved from \fIobjPtr\fR.
 .AP Tcl_WideInt *widePtr out
-.VS 8.4
-Points to place to store the wide integer value
-obtained by \fBTcl_GetWideIntFromObj\fR from \fIobjPtr\fR.
-.VE 8.4
+Points to place to store the wide integer value retrieved from \fIobjPtr\fR.
+.AP mp_int *bigValue in/out
+.VS 8.5
+Points to a multi-precision integer structure declared by the LibTomMath
+library.
+.VE 8.5
+.AP double doubleValue in
+.VS 8.5
+Double value from which the integer part is determined and
+used to initialize a multi-precision integer value.
+.VE 8.5
 .BE
 
 .SH DESCRIPTION
 .PP
-These procedures are used to create, modify, and read
-integer and wide integer Tcl objects from C code.
-\fBTcl_NewIntObj\fR, \fBTcl_NewLongObj\fR,
-\fBTcl_SetIntObj\fR, and \fBTcl_SetLongObj\fR
-create a new object of integer type
-or modify an existing object to have integer type,
-.VS 8.4
-and \fBTcl_NewWideIntObj\fR and \fBTcl_SetWideIntObj\fR create a new
-object of wide integer type or modify an existing object to have wide
-integer type. 
-.VE 8.4
-\fBTcl_NewIntObj\fR and \fBTcl_SetIntObj\fR set the object to have the
-integer value given by \fIintValue\fR,
-\fBTcl_NewLongObj\fR and \fBTcl_SetLongObj\fR
-set the object to have the
-long integer value given by \fIlongValue\fR,
-.VS 8.4
-and \fBTcl_NewWideIntObj\fR and \fBTcl_SetWideIntObj\fR set the object
-to have the wide integer value given by \fIwideValue\fR.
-\fBTcl_NewIntObj\fR, \fBTcl_NewLongObj\fR and \fBTcl_NewWideIntObj\fR
-return a pointer to a newly created object with reference count zero.
-These procedures set the object's type to be integer
-and assign the integer value to the object's internal representation
-\fIlongValue\fR or \fIwideValue\fR member (as appropriate).
-\fBTcl_SetIntObj\fR, \fBTcl_SetLongObj\fR
-and \fBTcl_SetWideIntObj\fR
-.VE 8.4
-invalidate any old string representation and,
-if the object is not already an integer object,
-free any old internal representation.
+.VS 8.5
+These procedures are used to create, modify, and read Tcl objects
+that hold integral values.  
 .PP
-\fBTcl_GetIntFromObj\fR and \fBTcl_GetLongFromObj\fR
-attempt to return an integer value from the Tcl object \fIobjPtr\fR,
-.VS 8.4
-and \fBTcl_GetWideIntFromObj\fR attempts to return a wide integer
-value from the Tcl object \fIobjPtr\fR.
-If the object is not already an integer object,
-or a wide integer object in the case of \fBTcl_GetWideIntFromObj\fR
-.VE 8.4
-they will attempt to convert it to one.
-If an error occurs during conversion, they return \fBTCL_ERROR\fR
-and leave an error message in the interpreter's result object
-unless \fIinterp\fR is NULL.
-Also, if the long integer held in the object's internal representation
-\fIlongValue\fR member can not be represented in a (non-long) integer,
-\fBTcl_GetIntFromObj\fR returns \fBTCL_ERROR\fR
-and leaves an error message in the interpreter's result object
-unless \fIinterp\fR is NULL.
-Otherwise, all three procedures return \fBTCL_OK\fR and
-store the integer, long integer value
-.VS 8.4
-or wide integer in the address given by \fIintPtr\fR, \fIlongPtr\fR
-and \fIwidePtr\fR
-.VE 8.4
-respectively.  If the object is not already an integer or wide integer
-object, the conversion will free any old internal representation.
-
+The different routines exist to accommodate different integral types in C
+with which values might be exchanged.  The C integral types for which Tcl
+provides value exchange routines are \fBint\fR, \fBlong int\fR,
+\fBTcl_WideInt\fR, and \fBmp_int\fR.  The \fBint\fR and \fBlong int\fR types
+are provided by the C language standard.  The \fBTcl_WideInt\fR type is a
+typedef defined to be whatever signed integral type covers at least the
+64-bit integer range (-9223372036854775808 to 9223372036854775807).  Depending
+on the platform and the C compiler, the actual type might be
+\fBlong int\fR, \fBlong long int\fR, \fBint64\fR, or something else.
+The \fBmp_int\fR type is a multiple-precision integer type defined
+by the LibTomMath multiple-precision integer library.  
+.PP
+The \fBTcl_NewIntObj\fR, \fBTcl_NewLongObj\fR, \fBTcl_NewWideIntObj\fR,
+and \fBTcl_NewBignumObj\fR routines each create and return a new
+Tcl object initialized to the integral value of the argument.  The
+returned Tcl object is unshared.
+.PP
+The \fBTcl_SetIntObj\fR, \fBTcl_SetLongObj\fR, \fBTcl_SetWideIntObj\fR,
+and \fBTcl_SetBignumObj\fR routines each set the value of an existing
+Tcl object pointed to by \fIobjPtr\fR to the integral value provided
+by the other argument.  The \fIobjPtr\fR argument must point to an
+unshared Tcl object.  Any attempt to set the value of a shared Tcl object
+violates Tcl's copy-on-write policy.  Any existing string representation
+or internal representation in the unshared Tcl object will be freed
+as a consequence of setting the new value.
+.PP
+The \fBTcl_GetIntFromObj\fR, \fBTcl_GetLongFromObj\fR,
+\fBTcl_GetWideIntFromObj\fR, \fBTcl_GetBignumFromObj\fR, and
+\fBTcl_TakeBignumFromObj\fR routines attempt to retrieve an integral
+value of the appropriate type from the Tcl object \fIobjPtr\fR.  If the
+attempt succeeds, then \fBTCL_OK\fR is returned, and the value is
+written to the storage provided by the caller.  The attempt might
+fail if \fIobjPtr\fR does not hold an integral value, or if the
+value exceeds the range of the target type.  If the attempt fails,
+then \fBTCL_ERROR\fR is returned, and if \fIinterp\fR is non-NULL,
+an error message is left in \fIinterp\fR.  The \fBTcl_ObjType\fR
+of \fIobjPtr\fR may be changed to make subsequent calls to the
+same routine more efficient. Unlike the other functions,
+\fBTcl_TakeBignumFromObj\fR may set the content of the Tcl object
+\fIobjPtr\fR to an empty string in the process of retrieving the
+multiple-precision integer value.
+.PP
+The choice between \fBTcl_GetBignumFromObj\fR and
+\fBTcl_TakeBignumFromObj\fR is governed by how the caller will
+continue to use \fIobjPtr\fR.  If after the \fBmp_int\fR value
+is retrieved from \fIobjPtr\fR, the caller will make no more
+use of \fIobjPtr\fR, then using \fBTcl_TakeBignumFromObj\fR
+permits Tcl to detect when an unshared \fIobjPtr\fR permits the
+value to be moved instead of copied, which should be more efficient.
+If anything later in the caller requires
+\fIobjPtr\fR to continue to hold the same value, then
+\fBTcl_GetBignumFromObj\fR must be chosen.
+.PP
+The \fBTcl_InitBignumFromDouble\fR routine is a utility procedure
+that extracts the integer part of \fIdoubleValue\fR and stores that
+integer value in the \fBmp_int\fR value \fIbigValue\fR.
+.VE 8.5
 .SH "SEE ALSO"
 Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult
-
 .SH KEYWORDS
 integer, integer object, integer type, internal representation, object, object type, string representation
diff --git a/doc/Interp.3 b/doc/Interp.3
index 7d1f515..0b1de03 100644
--- a/doc/Interp.3
+++ b/doc/Interp.3
@@ -15,9 +15,9 @@ Tcl_Interp \- client-visible fields of interpreter structures
 \fB#include <tcl.h>\fR
 .sp
 typedef struct {
-	char *\fIresult\fR;
-	Tcl_FreeProc *\fIfreeProc\fR;
-	int \fIerrorLine\fR;
+        char *\fIresult\fR;
+        Tcl_FreeProc *\fIfreeProc\fR;
+        int \fIerrorLine\fR;
 } Tcl_Interp;
 
 typedef void Tcl_FreeProc(char *\fIblockPtr\fR);
@@ -28,17 +28,23 @@ typedef void Tcl_FreeProc(char *\fIblockPtr\fR);
 The \fBTcl_CreateInterp\fR procedure returns a pointer to a Tcl_Interp
 structure.  This pointer is then passed into other Tcl procedures
 to process commands in the interpreter and perform other operations
-on the interpreter.  Interpreter structures contain many many fields
+on the interpreter.  Interpreter structures contain many fields
 that are used by Tcl, but only three that may be accessed by
 clients:  \fIresult\fR, \fIfreeProc\fR, and \fIerrorLine\fR.
 .PP
+.VS 8.5
+\fBNote that access to all three fields, \fIresult\fB, \fIfreeProc\fB and
+\fIerrorLine\fB is deprecated.\fR  Use \fBTcl_SetResult\fR,
+\fBTcl_GetResult\fR, and \fBTcl_GetReturnOptions\fR instead.
+.VE 8.5
+.PP
 The \fIresult\fR and \fIfreeProc\fR fields are used to return
 results or error messages from commands.
 This information is returned by command procedures back to \fBTcl_Eval\fR,
 and by \fBTcl_Eval\fR back to its callers.
 The \fIresult\fR field points to the string that represents the
 result or error message, and the \fIfreeProc\fR field tells how
-to dispose of the storage for the string when it isn't needed anymore.
+to dispose of the storage for the string when it is not needed anymore.
 The easiest way for command procedures to manipulate these
 fields is to call procedures like \fBTcl_SetResult\fR
 or \fBTcl_AppendResult\fR;  they
@@ -55,7 +61,6 @@ should point to an empty string.
 Normally, results are assumed to be statically allocated,
 which means that the contents will not change before the next time
 \fBTcl_Eval\fR is called or some other command procedure is invoked.
-.VS
 In this case, the \fIfreeProc\fR field must be zero.
 Alternatively, a command procedure may dynamically
 allocate its return value (e.g. using \fBTcl_Alloc\fR)
@@ -64,7 +69,6 @@ In this case, the command procedure must also set \fIinterp->freeProc\fR
 to the address of a procedure that can free the value, or \fBTCL_DYNAMIC\fR
 if the storage was allocated directly by Tcl or by a call to
 \fBTcl_Alloc\fR. 
-.VE
 If \fIinterp->freeProc\fR is non-zero, then Tcl will call \fIfreeProc\fR
 to free the space pointed to by \fIinterp->result\fR before it
 invokes the next command.
@@ -76,10 +80,8 @@ macro should be used for this purpose).
 \fIFreeProc\fR should have arguments and result that match the
 \fBTcl_FreeProc\fR declaration above:  it receives a single
 argument which is a pointer to the result value to free.
-.VS
 In most applications \fBTCL_DYNAMIC\fR is the only non-zero value ever
 used for \fIfreeProc\fR.
-.VE
 However, an application may store a different procedure address
 in \fIfreeProc\fR in order to use an alternate memory allocator
 or in order to do other cleanup when the result memory is freed.
diff --git a/doc/Limit.3 b/doc/Limit.3
new file mode 100644
index 0000000..928ebe1
--- /dev/null
+++ b/doc/Limit.3
@@ -0,0 +1,194 @@
+'\"
+'\" Copyright (c) 2004 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH Tcl_LimitCheck 3 8.5 Tcl "Tcl Library Procedures"
+.BS
+.SH NAME
+Tcl_LimitAddHandler, Tcl_LimitCheck, Tcl_LimitExceeded, Tcl_LimitGetCommands, Tcl_LimitGetGranularity, Tcl_LimitGetTime, Tcl_LimitReady, Tcl_LimitRemoveHandler, Tcl_LimitSetCommands, Tcl_LimitSetGranularity, Tcl_LimitSetTime, Tcl_LimitTypeEnabled, Tcl_LimitTypeExceeded, Tcl_LimitTypeReset, Tcl_LimitTypeSet \- manage and check resource limits on interpreters
+.SH SYNOPSIS
+.nf
+\fB#include <tcl.h>\fR
+.sp
+int
+\fBTcl_LimitCheck\fR(\fIinterp\fR)
+.sp
+int
+\fBTcl_LimitReady\fR(\fIinterp\fR)
+.sp
+int
+\fBTcl_LimitExceeded\fR(\fIinterp\fR)
+.sp
+int
+\fBTcl_LimitTypeExceeded\fR(\fIinterp, type\fR)
+.sp
+int
+\fBTcl_LimitTypeEnabled\fR(\fIinterp, type\fR)
+.sp
+void
+\fBTcl_LimitTypeSet\fR(\fIinterp, type\fR)
+.sp
+void
+\fBTcl_LimitTypeReset\fR(\fIinterp, type\fR)
+.sp
+int
+\fBTcl_LimitGetCommands\fR(\fIinterp\fR)
+.sp
+void
+\fBTcl_LimitSetCommands\fR(\fIinterp, commandLimit\fR)
+.sp
+void
+\fBTcl_LimitGetTime\fR(\fIinterp, timeLimitPtr\fR)
+.sp
+void
+\fBTcl_LimitSetTime\fR(\fIinterp, timeLimitPtr\fR)
+.sp
+int
+\fBTcl_LimitGetGranularity\fR(\fIinterp, type\fR)
+.sp
+void
+\fBTcl_LimitSetGranularity\fR(\fIinterp, type, granularity\fR)
+.sp
+void
+\fBTcl_LimitAddHandler\fR(\fIinterp, type, handlerProc, clientData, deleteProc\fR)
+.sp
+void
+\fBTcl_LimitRemoveHandler\fR(\fIinterp, type, handlerProc, clientData\fR)
+.SH ARGUMENTS
+.AS Tcl_LimitHandlerDeleteProc commandLimit in/out
+.AP Tcl_Interp *interp in
+Interpreter that the limit being managed applies to or that will have
+its limits checked.
+.AP int type in
+The type of limit that the operation refers to.  This must be either
+\fBTCL_LIMIT_COMMANDS\fR or \fBTCL_LIMIT_TIME\fR.
+.AP int commandLimit in
+The maximum number of commands (as reported by \fBinfo cmdcount\fR)
+that may be executed in the interpreter.
+.AP Tcl_Time *timeLimitPtr in/out
+A pointer to a structure that will either have the new time limit read
+from (\fBTcl_LimitSetTime\fR) or the current time limit written to
+(\fBTcl_LimitGetTime\fR).
+.AP int granularity in
+Divisor that indicates how often a particular limit should really be
+checked.  Must be at least 1.
+.AP Tcl_LimitHandlerProc *handlerProc in
+Function to call when a particular limit is exceeded.  If the
+\fIhandlerProc\fR removes or raises the limit during its processing,
+the limited interpreter will be permitted to continue to process after
+the handler returns.  Many handlers may be attached to the same
+interpreter limit; their order of execution is not defined, and they
+must be identified by \fIhandlerProc\fR and \fIclientData\fR when they
+are deleted.
+.AP ClientData clientData in
+Arbitrary pointer-sized word used to pass some context to the
+\fIhandlerProc\fR function.
+.AP Tcl_LimitHandlerDeleteProc *deleteProc in
+Function to call whenever a handler is deleted.  May be NULL if the
+\fIclientData\fR requires no deletion.
+.BE
+
+.SH DESCRIPTION
+.PP
+Tcl's interpreter resource limit subsystem allows for close control
+over how much computation time a script may use, and is useful for
+cases where a program is divided into multiple pieces where some parts
+are more trusted than others (e.g. web application servers).
+.PP
+Every interpreter may have a limit on the wall-time for execution, and
+a limit on the number of commands that the interpreter may execute.
+Since checking of these limits is potentially expensive (especially
+the time limit), each limit also has a checking granularity, which is
+a divisor for an internal count of the number of points in the core
+where a check may be performed (which is immediately before executing
+a command and at an unspecified frequency between running commands,
+which can happen in empty-bodied \fBwhile\fR loops).
+.PP
+The final component of the limit engine is a callback scheme which
+allows for notifications of when a limit has been exceeded.  These
+callbacks can just provide logging, or may allocate more resources to
+the interpreter to permit it to continue processing longer.
+.PP
+When a limit is exceeded (and the callbacks have run; the order of
+execution of the callbacks is unspecified) execution in the limited
+interpreter is stopped by raising an error and setting a flag that
+prevents the \fBcatch\fR command in that interpreter from trapping
+that error.  It is up to the context that started execution in that
+interpreter (typically a master interpreter) to handle the error.
+.SH "LIMIT CHECKING API"
+.PP
+To check the resource limits for an interpreter, call
+\fBTcl_LimitCheck\fR, which returns \fBTCL_OK\fR if the limit was not
+exceeded (after processing callbacks) and \fBTCL_ERROR\fR if the limit was
+exceeded (in which case an error message is also placed in the
+interpreter result).  That function should only be called when
+\fBTcl_LimitReady\fR returns non-zero so that granularity policy is
+enforced.  This API is designed to be similar in usage to
+\fBTcl_AsyncReady\fR and \fBTcl_AsyncInvoke\fR.
+.PP
+When writing code that may behave like \fBcatch\fR in respect of
+errors, you should only trap an error if \fBTcl_LimitExceeded\fR
+returns zero.  If it returns non-zero, the interpreter is in a
+limit-exceeded state and errors should be allowed to propagate to the
+calling context.  You can also check whether a particular type of
+limit has been exceeded using \fBTcl_LimitTypeExceeded\fR.
+.SH "LIMIT CONFIGURATION"
+.PP
+To check whether a limit has been set (but not whether it has actually
+been exceeded) on an interpreter, call \fBTcl_LimitTypeEnabled\fR with
+the type of limit you want to check.  To enable a particular limit
+call \fBTcl_LimitTypeSet\fR, and to disable a limit call
+\fBTcl_LimitTypeReset\fR.
+.PP
+The level of a command limit may be set using
+\fBTcl_LimitSetCommands\fR, and retrieved using
+\fBTcl_LimitGetCommands\fR.  Similarly for a time limit with
+\fBTcl_LimitSetTime\fR and \fBTcl_LimitGetTime\fR respectively, but
+with that API the time limit is copied from and to the Tcl_Time
+structure that the \fItimeLimitPtr\fR argument points to.
+.PP
+The checking granularity for a particular limit may be set using
+\fBTcl_LimitSetGranularity\fR and retrieved using
+\fBTcl_LimitGetGranularity\fR.  Note that granularities must always be
+positive.
+.SS "LIMIT CALLBACKS"
+.PP
+To add a handler callback to be invoked when a limit is exceeded, call
+\fBTcl_LimitAddHandler\fR.  The \fIhandlerProc\fR argument describes
+the function that will actually be called; it should have the
+following prototype:
+.PP
+.CS
+typedef void Tcl_LimitHandlerProc(
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR);
+.CE
+.PP
+The \fIclientData\fR argument to the handler will be whatever is
+passed to the \fIclientData\fR argument to \fBTcl_LimitAddHandler\fR,
+and the \fIinterp\fR is the interpreter that had its limit exceeded.
+.PP
+The \fIdeleteProc\fR argument to \fBTcl_LimitAddHandler\fR is a
+function to call to delete the \fIclientData\fR value.  It may be
+\fBTCL_STATIC\fR or NULL if no deletion action is necessary, or
+\fBTCL_DYNAMIC\fR if all that is necessary is to free the structure with
+\fBTcl_Free\fR.  Otherwise, it should refer to a function with the
+following prototype:
+.PP
+.CS
+typedef void Tcl_LimitHandlerDeleteProc(
+        ClientData \fIclientData\fR);
+.CE
+.PP
+A limit handler may be deleted using \fBTcl_LimitRemoveHandler\fR; the
+handler removed will be the first one found (out of the handlers added
+with \fBTcl_LimitAddHandler\fR) with exactly matching \fItype\fR,
+\fIhandlerProc\fR and \fIclientData\fR arguments.  This function
+always invokes the \fIdeleteProc\fR on the \fIclientData\fR (unless
+the \fIdeleteProc\fR was NULL or \fBTCL_STATIC\fR).
+
+.SH KEYWORDS
+interpreter, resource, limit, commands, time, callback
diff --git a/doc/LinkVar.3 b/doc/LinkVar.3
index a1dfcca..6361fb4 100644
--- a/doc/LinkVar.3
+++ b/doc/LinkVar.3
@@ -25,17 +25,24 @@ int
 .AP Tcl_Interp *interp in
 Interpreter that contains \fIvarName\fR.
 Also used by \fBTcl_LinkVar\fR to return error messages.
-.AP "CONST char" *varName in
-Name of global variable.  
+.AP "const char" *varName in
+Name of global variable.
 .AP char *addr in
 Address of C variable that is to be linked to \fIvarName\fR.
 .AP int type in
-Type of C variable.  Must be one of TCL_LINK_INT, TCL_LINK_DOUBLE,
-.VS 8.4
-TCL_LINK_WIDE_INT,
-.VE 8.4
-TCL_LINK_BOOLEAN, or TCL_LINK_STRING, optionally OR'ed with
-TCL_LINK_READ_ONLY to make Tcl variable read-only.
+Type of C variable.  Must be one of \fBTCL_LINK_INT\fR,
+.VS 8.5
+\fBTCL_LINK_UINT\fR, \fBTCL_LINK_CHAR\fR, \fBTCL_LINK_UCHAR\fR,
+\fBTCL_LINK_SHORT\fR, \fBTCL_LINK_USHORT\fR, \fBTCL_LINK_LONG\fR,
+\fBTCL_LINK_ULONG\fR,
+.VE 8.5
+\fBTCL_LINK_WIDE_INT\fR,
+.VS 8.5
+\fBTCL_LINK_WIDE_UINT\fR, \fBTCL_LINK_FLOAT\fR,
+.VE 8.5
+\fBTCL_LINK_DOUBLE\fR, \fBTCL_LINK_BOOLEAN\fR, or
+\fBTCL_LINK_STRING\fR, optionally OR'ed with \fBTCL_LINK_READ_ONLY\fR
+to make Tcl variable read-only.
 .BE
 
 .SH DESCRIPTION
@@ -46,14 +53,14 @@ given by \fIaddr\fR.
 Whenever the Tcl variable is read the value of the C variable will
 be returned, and whenever the Tcl variable is written the C
 variable will be updated to have the same value.
-\fBTcl_LinkVar\fR normally returns TCL_OK;  if an error occurs
+\fBTcl_LinkVar\fR normally returns \fBTCL_OK\fR;  if an error occurs
 while setting up the link (e.g. because \fIvarName\fR is the
-name of array) then TCL_ERROR is returned and the interpreter's result
+name of array) then \fBTCL_ERROR\fR is returned and the interpreter's result
 contains an error message.
 .PP
 The \fItype\fR argument specifies the type of the C variable,
 and must have one of the following values, optionally OR'ed with
-TCL_LINK_READ_ONLY:
+\fBTCL_LINK_READ_ONLY\fR:
 .TP
 \fBTCL_LINK_INT\fR
 The C variable is of type \fBint\fR.
@@ -61,6 +68,61 @@ Any value written into the Tcl variable must have a proper integer
 form acceptable to \fBTcl_GetIntFromObj\fR;  attempts to write
 non-integer values into \fIvarName\fR will be rejected with
 Tcl errors.
+.VS 8.5
+.TP
+\fBTCL_LINK_UINT\fR
+The C variable is of type \fBunsigned int\fR.
+Any value written into the Tcl variable must have a proper unsigned
+integer form acceptable to \fBTcl_GetWideIntFromObj\fR and in the
+platform's defined range for the \fBunsigned int\fR type; attempts to
+write non-integer values (or values outside the range) into
+\fIvarName\fR will be rejected with Tcl errors.
+.TP
+\fBTCL_LINK_CHAR\fR
+The C variable is of type \fBchar\fR.
+Any value written into the Tcl variable must have a proper integer
+form acceptable to \fBTcl_GetIntFromObj\fR and be in the range of the
+\fBchar\fR datatype; attempts to write non-integer or out-of-range
+values into \fIvarName\fR will be rejected with Tcl errors.
+.TP
+\fBTCL_LINK_UCHAR\fR
+The C variable is of type \fBunsigned char\fR.
+Any value written into the Tcl variable must have a proper unsigned
+integer form acceptable to \fBTcl_GetIntFromObj\fR and in the
+platform's defined range for the \fBunsigned char\fR type; attempts to
+write non-integer values (or values outside the range) into
+\fIvarName\fR will be rejected with Tcl errors.
+.TP
+\fBTCL_LINK_SHORT\fR
+The C variable is of type \fBshort\fR.
+Any value written into the Tcl variable must have a proper integer
+form acceptable to \fBTcl_GetIntFromObj\fR and be in the range of the
+\fBshort\fR datatype; attempts to write non-integer or out-of-range
+values into \fIvarName\fR will be rejected with Tcl errors.
+.TP
+\fBTCL_LINK_USHORT\fR
+The C variable is of type \fBunsigned short\fR.
+Any value written into the Tcl variable must have a proper unsigned
+integer form acceptable to \fBTcl_GetIntFromObj\fR and in the
+platform's defined range for the \fBunsigned short\fR type; attempts to
+write non-integer values (or values outside the range) into
+\fIvarName\fR will be rejected with Tcl errors.
+.TP
+\fBTCL_LINK_LONG\fR
+The C variable is of type \fBlong\fR.
+Any value written into the Tcl variable must have a proper integer
+form acceptable to \fBTcl_GetLongFromObj\fR; attempts to write
+non-integer or out-of-range
+values into \fIvarName\fR will be rejected with Tcl errors.
+.TP
+\fBTCL_LINK_ULONG\fR
+The C variable is of type \fBunsigned long\fR.
+Any value written into the Tcl variable must have a proper unsigned
+integer form acceptable to \fBTcl_GetWideIntFromObj\fR and in the
+platform's defined range for the \fBunsigned long\fR type; attempts to
+write non-integer values (or values outside the range) into
+\fIvarName\fR will be rejected with Tcl errors.
+.VE 8.5
 .TP
 \fBTCL_LINK_DOUBLE\fR
 The C variable is of type \fBdouble\fR.
@@ -68,21 +130,44 @@ Any value written into the Tcl variable must have a proper real
 form acceptable to \fBTcl_GetDoubleFromObj\fR;  attempts to write
 non-real values into \fIvarName\fR will be rejected with
 Tcl errors.
+.VS 8.5
+.TP
+\fBTCL_LINK_FLOAT\fR
+The C variable is of type \fBfloat\fR.
+Any value written into the Tcl variable must have a proper real
+form acceptable to \fBTcl_GetDoubleFromObj\fR and must be within the
+range acceptable for a \fBfloat\fR; attempts to
+write non-real values (or values outside the range) into
+\fIvarName\fR will be rejected with Tcl errors.
+.VE 8.5
 .TP
 \fBTCL_LINK_WIDE_INT\fR
-.VS 8.4
 The C variable is of type \fBTcl_WideInt\fR (which is an integer type
 at least 64-bits wide on all platforms that can support it.)
 Any value written into the Tcl variable must have a proper integer
 form acceptable to \fBTcl_GetWideIntFromObj\fR;  attempts to write
 non-integer values into \fIvarName\fR will be rejected with
 Tcl errors.
-.VE 8.4
+.VS 8.5
+.TP
+\fBTCL_LINK_WIDE_UINT\fR
+The C variable is of type \fBTcl_WideUInt\fR (which is an unsigned
+integer type at least 64-bits wide on all platforms that can support
+it.)
+Any value written into the Tcl variable must have a proper unsigned
+integer form acceptable to \fBTcl_GetWideIntFromObj\fR (it will be
+cast to unsigned);
+.\" FIXME! Use bignums instead.
+attempts to write non-integer values into \fIvarName\fR will be
+rejected with Tcl errors.
+.VE 8.5
 .TP
 \fBTCL_LINK_BOOLEAN\fR
 The C variable is of type \fBint\fR.
-If its value is zero then it will read from Tcl as ``0'';
-otherwise it will read from Tcl as ``1''.
+If its value is zero then it will read from Tcl as
+.QW 0 ;
+otherwise it will read from Tcl as
+.QW 1 .
 Whenever \fIvarName\fR is
 modified, the C variable will be set to a 0 or 1 value.
 Any value written into the Tcl variable must have a proper boolean
@@ -92,17 +177,16 @@ Tcl errors.
 .TP
 \fBTCL_LINK_STRING\fR
 The C variable is of type \fBchar *\fR.
-.VS
 If its value is not NULL then it must be a pointer to a string
 allocated with \fBTcl_Alloc\fR or \fBckalloc\fR.
-.VE
 Whenever the Tcl variable is modified the current C string will be
 freed and new memory will be allocated to hold a copy of the variable's
 new value.
 If the C variable contains a NULL pointer then the Tcl variable
-will read as ``NULL''.
+will read as
+.QW NULL .
 .PP
-If the TCL_LINK_READ_ONLY flag is present in \fItype\fR then the
+If the \fBTCL_LINK_READ_ONLY\fR flag is present in \fItype\fR then the
 variable will be read-only from Tcl, so that its value can only be
 changed by modifying the C variable.
 Attempts to write the variable from Tcl will be rejected with errors.
diff --git a/doc/ListObj.3 b/doc/ListObj.3
index 2adea4e..443eafe 100644
--- a/doc/ListObj.3
+++ b/doc/ListObj.3
@@ -36,7 +36,7 @@ int
 int
 \fBTcl_ListObjReplace\fR(\fIinterp, listPtr, first, count, objc, objv\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp "*CONST objv[]" out
+.AS "Tcl_Obj *const" *elemListPtr in/out
 .AP Tcl_Interp *interp in
 If an error occurs while converting an object to be a list object,
 an error message is left in the interpreter's result object
@@ -71,13 +71,11 @@ will insert into a new list object,
 and \fBTcl_ListObjReplace\fR will insert into \fIlistPtr\fR.
 For \fBTcl_SetListObj\fR,
 the number of Tcl objects to insert into \fIobjPtr\fR.
-.VS
-.AP Tcl_Obj	"*CONST\ objv[]" in
+.AP "Tcl_Obj *const" objv[] in
 An array of pointers to objects.
 \fBTcl_NewListObj\fR will insert these objects into a new list object
 and \fBTcl_ListObjReplace\fR will insert them into an existing \fIlistPtr\fR.
 Each object will become a separate list element.  
-.VE
 .AP int *intPtr out
 Points to location where \fBTcl_ListObjLength\fR
 stores the length of the list.
@@ -151,8 +149,9 @@ has reference count zero.
 the elements in a list object.  It returns the count by storing it in the
 address \fIobjcPtr\fR.  Similarly, it returns the array pointer by storing
 it in the address \fIobjvPtr\fR.
-The memory pointed to is managed by Tcl and should not be freed by the
-caller.
+The memory pointed to is managed by Tcl and should not be freed or written
+to by the caller. If the list is empty, 0 is stored at \fIobjcPtr\fR
+and NULL at \fIobjvPtr\fR.
 If \fIlistPtr\fR is not already a list object, \fBTcl_ListObjGetElements\fR
 will attempt to convert it to one; if the conversion fails, it returns
 \fBTCL_ERROR\fR and leaves an error message in the interpreter's result
@@ -219,27 +218,33 @@ it can be used to implement a number of list operations.
 For example, the following code inserts the \fIobjc\fR objects
 referenced by the array of object pointers \fIobjv\fR
 just before the element \fIindex\fR of the list referenced by \fIlistPtr\fR:
+.PP
 .CS
-result = Tcl_ListObjReplace(interp, listPtr, index, 0, objc, objv);
+result = Tcl_ListObjReplace(interp, listPtr, index, 0,
+        objc, objv);
 .CE
+.PP
 Similarly, the following code appends the \fIobjc\fR objects
 referenced by the array \fIobjv\fR
 to the end of the list \fIlistPtr\fR:
+.PP
 .CS
 result = Tcl_ListObjLength(interp, listPtr, &length);
 if (result == TCL_OK) {
-	result = Tcl_ListObjReplace(interp, listPtr, length, 0, objc, objv);
+    result = Tcl_ListObjReplace(interp, listPtr, length, 0,
+            objc, objv);
 }
 .CE
+.PP
 The \fIcount\fR list elements starting at \fIfirst\fR can be deleted
 by simply calling \fBTcl_ListObjReplace\fR
 with a NULL \fIobjvPtr\fR:
+.PP
 .CS
-result = Tcl_ListObjReplace(interp, listPtr, first, count, 0, NULL);
+result = Tcl_ListObjReplace(interp, listPtr, first, count,
+        0, NULL);
 .CE
-
 .SH "SEE ALSO"
 Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult
-
 .SH KEYWORDS
 append, index, insert, internal representation, length, list, list object, list type, object, object type, replace, string representation
diff --git a/doc/Namespace.3 b/doc/Namespace.3
new file mode 100644
index 0000000..5477329
--- /dev/null
+++ b/doc/Namespace.3
@@ -0,0 +1,165 @@
+'\"
+'\" Copyright (c) 2003 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+'\" Note that some of these functions do not seem to belong, but they
+'\" were all introduced with the same TIP (#139)
+'\" 
+.so man.macros
+.TH Tcl_Namespace 3 8.5 Tcl "Tcl Library Procedures"
+.BS
+.SH NAME
+Tcl_AppendExportList, Tcl_CreateNamespace, Tcl_DeleteNamespace, Tcl_Export, Tcl_FindCommand, Tcl_FindNamespace, Tcl_ForgetImport, Tcl_GetCurrentNamespace, Tcl_GetGlobalNamespace, Tcl_GetNamespaceUnknownHandler, Tcl_Import, Tcl_SetNamespaceUnknownHandler \- manipulate namespaces
+.SH SYNOPSIS
+.nf
+\fB#include <tcl.h>\fR
+.sp
+Tcl_Namespace *
+\fBTcl_CreateNamespace\fR(\fIinterp, name, clientData, deleteProc\fR)
+.sp
+\fBTcl_DeleteNamespace\fR(\fInsPtr\fR)
+.sp
+int
+\fBTcl_AppendExportList\fR(\fIinterp, nsPtr, objPtr\fR)
+.sp
+int
+\fBTcl_Export\fR(\fIinterp, nsPtr, pattern, resetListFirst\fR)
+.sp
+int
+\fBTcl_Import\fR(\fIinterp, nsPtr, pattern, allowOverwrite\fR)
+.sp
+int
+\fBTcl_ForgetImport\fR(\fIinterp, nsPtr, pattern\fR)
+.sp
+Tcl_Namespace *
+\fBTcl_GetCurrentNamespace\fR(\fIinterp\fR)
+.sp
+Tcl_Namespace *
+\fBTcl_GetGlobalNamespace\fR(\fIinterp\fR)
+.sp
+Tcl_Namespace *
+\fBTcl_FindNamespace\fR(\fIinterp, name, contextNsPtr, flags\fR)
+.sp
+Tcl_Command
+\fBTcl_FindCommand\fR(\fIinterp, name, contextNsPtr, flags\fR)
+.sp
+Tcl_Obj *
+\fBTcl_GetNamespaceUnknownHandler(\fIinterp, nsPtr\fR)
+.sp
+int
+\fBTcl_SetNamespaceUnknownHandler(\fIinterp, nsPtr, handlerPtr\fR)
+.SH ARGUMENTS
+.AS Tcl_NamespaceDeleteProc allowOverwrite in/out
+.AP Tcl_Interp *interp in/out
+The interpreter in which the namespace exists and where name lookups
+are performed. Also where error result messages are written.
+.AP "const char" *name in
+The name of the namespace or command to be created or accessed.
+.AP ClientData clientData in
+A context pointer by the creator of the namespace.  Not interpreted by
+Tcl at all.
+.AP Tcl_NamespaceDeleteProc *deleteProc in
+A pointer to function to call when the namespace is deleted, or NULL
+if no such callback is to be performed.
+.AP Tcl_Namespace *nsPtr in
+The namespace to be manipulated, or NULL (for other than
+\fBTcl_DeleteNamespace\fR) to manipulate the current namespace.
+.AP Tcl_Obj *objPtr out
+A reference to an unshared object to which the function output will be
+written.
+.AP "const char" *pattern in
+The glob-style pattern (see \fBTcl_StringMatch\fR) that describes the
+commands to be imported or exported.
+.AP int resetListFirst in
+Whether the list of export patterns should be reset before adding the
+current pattern to it.
+.AP int allowOverwrite in
+Whether new commands created by this import action can overwrite
+existing commands.
+.AP Tcl_Namespace *contextNsPtr in
+The location in the namespace hierarchy where the search for a
+namespace or command should be conducted relative to when the search
+term is not rooted at the global namespace.  NULL indicates the
+current namespace.
+.AP int flags in
+OR-ed combination of bits controlling how the search is to be
+performed.  The following flags are supported: \fBTCL_GLOBAL_ONLY\fR
+(indicates that the search is always to be conducted relative to the
+global namespace), \fBTCL_NAMESPACE_ONLY\fR (just for \fBTcl_FindCommand\fR;
+indicates that the search is always to be conducted relative to the
+context namespace), and \fBTCL_LEAVE_ERR_MSG\fR (indicates that an error
+message should be left in the interpreter if the search fails.)
+.AP Tcl_Obj *handlerPtr in
+A script fragment to be installed as the unknown command handler for the
+namespace, or NULL to reset the handler to its default.
+.BE
+
+.SH DESCRIPTION
+.PP
+Namespaces are hierarchic naming contexts that can contain commands
+and variables.  They also maintain a list of patterns that describes
+what commands are exported, and can import commands that have been
+exported by other namespaces.  Namespaces can also be manipulated
+through the Tcl command \fBnamespace\fR.
+.PP
+The \fITcl_Namespace\fR structure encapsulates a namespace, and is
+guaranteed to have the following fields in it: \fIname\fR (the local
+name of the namespace, with no namespace separator characters in it,
+with empty denoting the global namespace), \fIfullName\fR (the fully
+specified name of the namespace), \fIclientData\fR, \fIdeleteProc\fR
+(the values specified in the call to \fBTcl_CreateNamespace\fR), and
+\fIparentPtr\fR (a pointer to the containing namespace, or NULL for
+the global namespace.)
+.PP
+\fBTcl_CreateNamespace\fR creates a new namespace.  The
+\fIdeleteProc\fR will have the following type signature:
+.CS
+typedef void (Tcl_NamespaceDeleteProc) (ClientData clientData);
+.CE
+.PP
+\fBTcl_DeleteNamespace\fR deletes a namespace.
+.PP
+\fBTcl_AppendExportList\fR retrieves the export patterns for a
+namespace given namespace and appends them (as list items) to
+\fIobjPtr\fR.
+.PP
+\fBTcl_Export\fR sets and appends to the export patterns for a
+namespace.  Patterns are appended unless the \fIresetListFirst\fR flag
+is true.
+.PP
+\fBTcl_Import\fR imports commands matching a pattern into a
+namespace.  Note that the pattern must include the name of the
+namespace to import from.  This function returns an error if
+an attempt to import a command over an existing command is made,
+unless the \fIallowOverwrite\fR flag has been set.
+.PP
+\fBTcl_ForgetImport\fR removes imports matching a pattern.
+.PP
+\fBTcl_GetCurrentNamespace\fR returns the current namespace for an
+interpreter.
+.PP
+\fBTcl_GetGlobalNamespace\fR returns the global namespace for an
+interpreter.
+.PP
+\fBTcl_FindNamespace\fR searches for a namespace named \fIname\fR
+within the context of the namespace \fIcontextNsPtr\fR.  If the
+namespace cannot be found, NULL is returned.
+.PP
+\fBTcl_FindCommand\fR searches for a command named \fIname\fR within
+the context of the namespace \fIcontextNsPtr\fR.  If the command
+cannot be found, NULL is returned.
+.PP
+\fBTcl_GetNamespaceUnknownHandler\fR returns the unknown command handler
+for the namespace, or NULL if none is set.
+.PP
+\fBTcl_SetNamespaceUnknownHandler\fR sets the unknown command handler for
+the namespace. If \fIhandlerPtr\fR is NULL, then the handler is reset to
+its default.
+
+.SH "SEE ALSO"
+Tcl_CreateCommand, Tcl_ListObjAppendElements, Tcl_SetVar
+
+.SH KEYWORDS
+namespace, command
diff --git a/doc/Notifier.3 b/doc/Notifier.3
index bb2fef4..7858a8c 100644
--- a/doc/Notifier.3
+++ b/doc/Notifier.3
@@ -25,7 +25,6 @@ void
 .sp
 void
 \fBTcl_QueueEvent\fR(\fIevPtr, position\fR)
-.VS 8.1
 .sp
 void
 \fBTcl_ThreadQueueEvent\fR(\fIthreadId, evPtr, position\fR)
@@ -63,12 +62,16 @@ int
 int
 \fBTcl_GetServiceMode\fR()
 .sp
-int		
+int
 \fBTcl_SetServiceMode\fR(\fImode\fR)
-.VE
-
+.sp
+void
+\fBTcl_ServiceModeHook\fR(\fImode\fR)
+.sp
+void
+\fBTcl_SetNotifier\fR(\fInotifierProcPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_EventDeleteProc milliseconds
+.AS Tcl_EventDeleteProc *notifierProcPtr
 .AP Tcl_EventSetupProc *setupProc in
 Procedure to invoke to prepare for event wait in \fBTcl_DoOneEvent\fR.
 .AP Tcl_EventCheckProc *checkProc in
@@ -97,11 +100,13 @@ Procedure to invoke for each queued event in \fBTcl_DeleteEvents\fR.
 .AP int flags in
 What types of events to service.  These flags are the same as those
 passed to \fBTcl_DoOneEvent\fR.
-.VS 8.1
 .AP int mode in
 Indicates whether events should be serviced by \fBTcl_ServiceAll\fR.
 Must be one of \fBTCL_SERVICE_NONE\fR or \fBTCL_SERVICE_ALL\fR.
-.VE
+.AP Tcl_NotifierProcs* notifierProcPtr in
+Structure of function pointers describing notifier procedures that are
+to replace the ones installed in the executable.  See
+\fBREPLACING THE NOTIFIER\fR for details.
 .BE
 
 .SH INTRODUCTION
@@ -135,9 +140,7 @@ sources place events onto the queue so that they may be processed in
 order at appropriate times during the event loop. The event queue
 guarantees a fair discipline of event handling, so that no event
 source can starve the others.  It also allows events to be saved for
-servicing at a future time.
-.VS 8.1
-Threaded applications work in a
+servicing at a future time.  Threaded applications work in a
 similar manner, except that there is a separate event queue for
 each thread containing a Tcl interpreter.
 \fBTcl_QueueEvent\fR is used (primarily
@@ -169,7 +172,6 @@ The procedures \fBTcl_ServiceAll\fR, \fBTcl_ServiceEvent\fR,
 to help connect Tcl's event loop to an external event loop such as
 Motif's.
 .SH "NOTIFIER BASICS"
-.VE
 .PP
 The easiest way to understand how the notifier works is to consider
 what happens when \fBTcl_DoOneEvent\fR is called.
@@ -180,17 +182,13 @@ things:
 .IP [1]
 Check the event queue to see if it contains any events that can
 be serviced.  If so, service the first possible event, remove it
-.VS 8.1
 from the queue, and return.  It does this by calling
 \fBTcl_ServiceEvent\fR and passing in the \fIflags\fR argument.
-.VE
 .IP [2]
 Prepare to block for an event.  To do this, \fBTcl_DoOneEvent\fR
 invokes a \fIsetup procedure\fR in each event source.
 The event source will perform event-source specific initialization and
-.VS 8.1
 possibly call \fBTcl_SetMaxBlockTime\fR to limit how long
-.VE
 \fBTcl_WaitForEvent\fR will block if no new events occur.
 .IP [3]
 Call \fBTcl_WaitForEvent\fR.  This procedure is implemented differently
@@ -233,8 +231,8 @@ the event source.
 \fISetupProc\fR should match the following prototype:
 .CS
 typedef void Tcl_EventSetupProc(
-	ClientData \fIclientData\fR,
-	int \fIflags\fR);
+        ClientData \fIclientData\fR,
+        int \fIflags\fR);
 .CE
 The \fIclientData\fR argument will be the same as the \fIclientData\fR
 argument to \fBTcl_CreateEventSource\fR;  it is typically used to
@@ -243,7 +241,7 @@ The \fIflags\fR argument will be the same as the \fIflags\fR
 argument passed to \fBTcl_DoOneEvent\fR except that it will never
 be 0 (\fBTcl_DoOneEvent\fR replaces 0 with \fBTCL_ALL_EVENTS\fR).
 \fIFlags\fR indicates what kinds of events should be considered;
-if the bit corresponding to this event source isn't set, the event
+if the bit corresponding to this event source is not set, the event
 source should return immediately without doing anything.  For
 example, the file event source checks for the \fBTCL_FILE_EVENTS\fR
 bit.
@@ -256,7 +254,6 @@ request notification with a Windows event.  For timer-driven event
 sources such as timer events or any polled event, the event source
 can call \fBTcl_SetMaxBlockTime\fR to force the application to wake
 up after a specified time even if no events have occurred.
-.VS 8.1
 If no event source calls \fBTcl_SetMaxBlockTime\fR
 then \fBTcl_WaitForEvent\fR will wait as long as necessary for an
 event to occur; otherwise, it will only wait as long as the shortest
@@ -268,28 +265,24 @@ events already queued.  If there are, it calls
 \fBTcl_SetMaxBlockTime\fR with a 0 block time so that
 \fBTcl_WaitForEvent\fR does not block if there is no new data on the X
 connection.
-.VE
 The \fItimePtr\fR argument to \fBTcl_WaitForEvent\fR points to
 a structure that describes a time interval in seconds and
 microseconds:
 .CS
 typedef struct Tcl_Time {
-	long \fIsec\fR;
-	long \fIusec\fR;
+        long \fIsec\fR;
+        long \fIusec\fR;
 } Tcl_Time;
 .CE
 The \fIusec\fR field should be less than 1000000.
 .PP
-.VS 8.1
 Information provided to \fBTcl_SetMaxBlockTime\fR
 is only used for the next call to \fBTcl_WaitForEvent\fR; it is
 discarded after \fBTcl_WaitForEvent\fR returns.
-.VE
 The next time an event wait is done each of the event sources'
 setup procedures will be called again, and they can specify new
 information for that event wait.
 .PP
-.VS 8.1
 If the application uses an external event loop rather than
 \fBTcl_DoOneEvent\fR, the event sources may need to call
 \fBTcl_SetMaxBlockTime\fR at other times.  For example, if a new event
@@ -305,7 +298,6 @@ platform-specific procedures may also be available for
 \fIsetupProc\fR, if there is additional information needed by
 \fBTcl_WaitForEvent\fR on that platform.  For example, on Unix systems
 the \fBTcl_CreateFileHandler\fR interface can be used to wait for file events.
-.VE
 .PP
 The second procedure provided by each event source is its check
 procedure, indicated by the \fIcheckProc\fR argument to
@@ -313,8 +305,8 @@ procedure, indicated by the \fIcheckProc\fR argument to
 following prototype:
 .CS
 typedef void Tcl_EventCheckProc(
-	ClientData \fIclientData\fR,
-	int \fIflags\fR);
+        ClientData \fIclientData\fR,
+        int \fIflags\fR);
 .CE
 The arguments to this procedure are the same as those for \fIsetupProc\fR.
 \fBCheckProc\fR is invoked by \fBTcl_DoOneEvent\fR after it has waited
@@ -363,24 +355,20 @@ events at the front of the queue, such as a series of
 Enter and Leave events synthesized during a grab or ungrab operation
 in Tk.
 .PP
-.VS 8.1
 When it is time to handle an event from the queue (steps 1 and 4
 above) \fBTcl_ServiceEvent\fR will invoke the \fIproc\fR specified
-.VE
 in the first queued \fBTcl_Event\fR structure.
 \fIProc\fR must match the following prototype:
 .CS
 typedef int Tcl_EventProc(
-	Tcl_Event *\fIevPtr\fR,
-	int \fIflags\fR);
+        Tcl_Event *\fIevPtr\fR,
+        int \fIflags\fR);
 .CE
 The first argument to \fIproc\fR is a pointer to the event, which will
 be the same as the first argument to the \fBTcl_QueueEvent\fR call that
 added the event to the queue.
 The second argument to \fIproc\fR is the \fIflags\fR argument for the
-.VS 8.1
 current call to \fBTcl_ServiceEvent\fR;  this is used by the event source
-.VE
 to return immediately if its events are not relevant.
 .PP
 It is up to \fIproc\fR to handle the event, typically by invoking
@@ -389,20 +377,17 @@ Once the event source has finished handling the event it returns 1
 to indicate that the event can be removed from the queue.
 If for some reason the event source decides that the event cannot
 be handled at this time, it may return 0 to indicate that the event
-.VS 8.1
 should be deferred for processing later;  in this case \fBTcl_ServiceEvent\fR
-.VE
 will go on to the next event in the queue and attempt to service it.
 There are several reasons why an event source might defer an event.
 One possibility is that events of this type are excluded by the
 \fIflags\fR argument.
 For example, the file event source will always return 0 if the
-\fBTCL_FILE_EVENTS\fR bit isn't set in \fIflags\fR.
+\fBTCL_FILE_EVENTS\fR bit is not set in \fIflags\fR.
 Another example of deferring events happens in Tk if
 \fBTk_RestrictEvents\fR has been invoked to defer certain kinds
 of window events.
 .PP
-.VS 8.1
 When \fIproc\fR returns 1, \fBTcl_ServiceEvent\fR will remove the
 event from the event queue and free its storage.
 Note that the storage for an event must be allocated by
@@ -422,8 +407,9 @@ Tcl_ThreadID for the current thread, use the \fBTcl_GetCurrentThread\fR
 procedure.  (A thread would then need to pass this identifier to other
 threads for those threads to be able to add events to its queue.)
 After adding an event to another thread's queue, you then typically
-need to call \fBTcl_ThreadAlert\fR to "wake up" that thread's notifier to
-alert it to the new event.
+need to call \fBTcl_ThreadAlert\fR to
+.QW "wake up"
+that thread's notifier to alert it to the new event.
 .PP
 \fBTcl_DeleteEvents\fR can be used to explicitly remove one or more
 events from the event queue.  \fBTcl_DeleteEvents\fR calls \fIproc\fR
@@ -432,8 +418,8 @@ returns 1.  Events for which the procedure returns 0 are left in the
 queue.  \fIProc\fR should match the following prototype:
 .CS
 typedef int Tcl_EventDeleteProc(
-	Tcl_Event *\fIevPtr\fR,
-	ClientData \fIclientData\fR);
+        Tcl_Event *\fIevPtr\fR,
+        ClientData \fIclientData\fR);
 .CE
 The \fIclientData\fR argument will be the same as the \fIclientData\fR
 argument to \fBTcl_DeleteEvents\fR; it is typically used to point to
@@ -444,23 +430,21 @@ point to the next event in the queue.
 \fIcheckProc\fR, and \fIclientData\fR arguments must exactly match those
 provided to the \fBTcl_CreateEventSource\fR for the event source to be deleted.
 If no such source exists, \fBTcl_DeleteEventSource\fR has no effect.
-.VE
 
 .SH "CREATING A NEW NOTIFIER"
 .PP
 The notifier consists of all the procedures described in this manual
 entry, plus \fBTcl_DoOneEvent\fR and \fBTcl_Sleep\fR, which are
-.VS 8.1
 available on all platforms, and \fBTcl_CreateFileHandler\fR and
 \fBTcl_DeleteFileHandler\fR, which are Unix-specific.  Most of these
 procedures are generic, in that they are the same for all notifiers.
-However, eight of the procedures are notifier-dependent:
-\fBTcl_InitNotifier\fR, \fBTcl_AlertNotifier\fR, \fBTcl_FinalizeNotifier\fR, 
-\fBTcl_SetTimer\fR, \fBTcl_Sleep\fR, \fBTcl_WaitForEvent\fR,
-\fBTcl_CreateFileHandler\fR and \fBTcl_DeleteFileHandler\fR.  To
-support a new platform or to integrate Tcl with an
-application-specific event loop, you must write new versions of these
-procedures.
+However, none of the procedures are notifier-dependent:
+\fBTcl_InitNotifier\fR, \fBTcl_AlertNotifier\fR,
+\fBTcl_FinalizeNotifier\fR, \fBTcl_SetTimer\fR, \fBTcl_Sleep\fR,
+\fBTcl_WaitForEvent\fR, \fBTcl_CreateFileHandler\fR,
+\fBTcl_DeleteFileHandler\fR and \fBTcl_ServiceModeHook\fR.  To support a
+new platform or to integrate Tcl with an application-specific event loop,
+you must write new versions of these procedures.
 .PP
 \fBTcl_InitNotifier\fR initializes the notifier state and returns
 a handle to the notifier state.  Tcl calls this
@@ -469,7 +453,9 @@ procedure when initializing a Tcl interpreter.  Similarly,
 called by \fBTcl_Finalize\fR when shutting down a Tcl interpreter.
 .PP
 \fBTcl_WaitForEvent\fR is the lowest-level procedure in the notifier;
-it is responsible for waiting for an ``interesting'' event to occur or
+it is responsible for waiting for an
+.QW interesting
+event to occur or
 for a given time to elapse.  Before \fBTcl_WaitForEvent\fR is invoked,
 each of the event sources' setup procedure will have been invoked.
 The \fItimePtr\fR argument to
@@ -483,13 +469,13 @@ to occur; it should not actually process the event in any way.
 Later on, the
 event sources will process the raw events and create Tcl_Events on
 the event queue in their \fIcheckProc\fR procedures.
-However, on some platforms (such as Windows) this isn't possible;
+However, on some platforms (such as Windows) this is not possible;
 events may be processed in \fBTcl_WaitForEvent\fR, including queuing
 Tcl_Events and more (for example, callbacks for native widgets may be
 invoked).  The return value from \fBTcl_WaitForEvent\fR must be either
 0, 1, or \-1.  On platforms such as Windows where events get processed in
 \fBTcl_WaitForEvent\fR, a return value of 1 means that there may be more
-events still pending that haven't been processed.  This is a sign to the
+events still pending that have not been processed.  This is a sign to the
 caller that it must call \fBTcl_WaitForEvent\fR again if it wants all
 pending events to be processed. A 0 return value means that calling
 \fBTcl_WaitForEvent\fR again will not have any effect: either this is a
@@ -504,7 +490,9 @@ forever because there were no active event sources and the timeout was
 infinite.
 .PP
 \fBTcl_AlertNotifier\fR is used in multithreaded applications to allow
-any thread to "wake up" the notifier to alert it to new events on its
+any thread to
+.QW "wake up"
+the notifier to alert it to new events on its
 queue.  \fBTcl_AlertNotifier\fR requires as an argument the notifier
 handle returned by \fBTcl_InitNotifier\fR.
 .PP
@@ -514,11 +502,18 @@ invoked by \fBTcl_SetMaxBlockTime\fR whenever the maximum blocking
 time has been reduced.  \fBTcl_SetTimer\fR should arrange for the
 external event loop to invoke \fBTcl_ServiceAll\fR after the specified
 interval even if no events have occurred.  This interface is needed
-because \fBTcl_WaitForEvent\fR isn't invoked when there is an external
+because \fBTcl_WaitForEvent\fR is not invoked when there is an external
 event loop.  If the
 notifier will only be used from \fBTcl_DoOneEvent\fR, then
 \fBTcl_SetTimer\fR need not do anything.
 .PP
+\fBTcl_ServiceModeHook\fR is called by the platform-independent portion
+of the notifier when client code makes a call to
+\fBTcl_SetServiceMode\fR. This hook is provided to support operating
+systems that require special event handling when the application is in
+a modal loop (the Windows notifier, for instance, uses this hook to
+create a communication window).
+.PP
 On Unix systems, the file event source also needs support from the
 notifier.  The file event source consists of the
 \fBTcl_CreateFileHandler\fR and \fBTcl_DeleteFileHandler\fR
@@ -532,6 +527,38 @@ The easiest way to create a new notifier is to look at the code
 for an existing notifier, such as the files \fBunix/tclUnixNotfy.c\fR
 or \fBwin/tclWinNotify.c\fR in the Tcl source distribution.
 
+.SH "REPLACING THE NOTIFIER"
+.PP
+A notifier that has been written according to the conventions above
+can also be installed in a running process in place of the standard
+notifier.  This mechanism is used so that a single executable can be
+used (with the standard notifier) as a stand-alone program and reused
+(with a replacement notifier in a loadable extension) as an extension
+to another program, such as a Web browser plugin.
+.PP
+To do this, the extension makes a call to \fBTcl_SetNotifier\fR
+passing a pointer to a \fBTcl_NotifierProcs\fR data structure.  The
+structure has the following layout:
+.CS
+typedef struct Tcl_NotifierProcs {
+    Tcl_SetTimerProc *setTimerProc;
+    Tcl_WaitForEventProc *waitForEventProc;
+    Tcl_CreateFileHandlerProc *createFileHandlerProc;
+    Tcl_DeleteFileHandlerProc *deleteFileHandlerProc;
+    Tcl_InitNotifierProc *initNotifierProc;
+    Tcl_FinalizeNotifierProc *finalizeNotifierProc;
+    Tcl_AlertNotifierProc *alertNotifierProc;
+    Tcl_ServiceModeHookProc *serviceModeHookProc;
+} Tcl_NotifierProcs;
+.CE
+Following the call to \fBTcl_SetNotifier\fR, the pointers given in
+the \fBTcl_NotifierProcs\fR structure replace whatever notifier had
+been installed in the process.
+.PP
+It is extraordinarily unwise to replace a running notifier. Normally,
+\fBTcl_SetNotifier\fR should be called at process initialization time
+before the first call to \fBTcl_InitNotifier\fR.
+
 .SH "EXTERNAL EVENT LOOPS"
 .PP
 The notifier interfaces are designed so that Tcl can be embedded into
@@ -592,7 +619,7 @@ then calls to \fBTcl_ServiceAll\fR will behave normally.
 mode, which should be restored when the recursive loop exits.
 \fBTcl_GetServiceMode\fR returns the current value of the service
 mode.
-.VE
+
 .SH "SEE ALSO"
 \fBTcl_CreateFileHandler\fR, \fBTcl_DeleteFileHandler\fR, \fBTcl_Sleep\fR,
 \fBTcl_DoOneEvent\fR, \fBThread(3)\fR
diff --git a/doc/Object.3 b/doc/Object.3
index 4e8fa6f..4817b9b 100644
--- a/doc/Object.3
+++ b/doc/Object.3
@@ -5,7 +5,7 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH Tcl_Obj 3 8.1 Tcl "Tcl Library Procedures"
+.TH Tcl_Obj 3 8.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
 Tcl_NewObj, Tcl_DuplicateObj, Tcl_IncrRefCount, Tcl_DecrRefCount, Tcl_IsShared, Tcl_InvalidateStringRep \- manipulate Tcl objects
@@ -28,7 +28,7 @@ int
 .sp
 \fBTcl_InvalidateStringRep\fR(\fIobjPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_Obj *objPtr in
+.AS Tcl_Obj *objPtr
 .AP Tcl_Obj *objPtr in
 Points to an object;
 must have been the result of a previous call to \fBTcl_NewObj\fR.
@@ -100,34 +100,37 @@ reclaim an object's storage.
 .PP
 Tcl objects are typed.
 An object's internal representation is controlled by its type.
-Seven types are predefined in the Tcl core
+Several types are predefined in the Tcl core
 including integer, double, list, and bytecode.
 Extension writers can extend the set of types
-by using the procedure \fBTcl_RegisterObjType\fR .
-
+by defining their own \fBTcl_ObjType\fR structs.
 .SH "THE TCL_OBJ STRUCTURE"
 .PP
 Each Tcl object is represented by a \fBTcl_Obj\fR structure
 which is defined as follows.
 .CS
 typedef struct Tcl_Obj {
-	int \fIrefCount\fR;
-	char *\fIbytes\fR;
-	int \fIlength\fR;
-	Tcl_ObjType *\fItypePtr\fR;
-	union {
-		long \fIlongValue\fR;
-		double \fIdoubleValue\fR;
-		VOID *\fIotherValuePtr\fR;
-		struct {
-			VOID *\fIptr1\fR;
-			VOID *\fIptr2\fR;
-		} \fItwoPtrValue\fR;
-	} \fIinternalRep\fR;
+        int \fIrefCount\fR;
+        char *\fIbytes\fR;
+        int \fIlength\fR;
+        Tcl_ObjType *\fItypePtr\fR;
+        union {
+                long \fIlongValue\fR;
+                double \fIdoubleValue\fR;
+                void *\fIotherValuePtr\fR;
+                Tcl_WideInt \fIwideValue\fR;
+                struct {
+                        void *\fIptr1\fR;
+                        void *\fIptr2\fR;
+                } \fItwoPtrValue\fR;
+                struct {
+                        void *\fIptr\fR;
+                        unsigned long \fIvalue\fR;
+                } \fIptrAndLongRep\fR;
+        } \fIinternalRep\fR;
 } Tcl_Obj;
 .CE
 The \fIbytes\fR and the \fIlength\fR members together hold
-.VS 8.1
 an object's UTF-8 string representation,
 which is a \fIcounted string\fR not containing null bytes (UTF-8 null
 characters should be encoded as a two byte sequence: 192, 128.)
@@ -137,7 +140,6 @@ The byte array must always have a null byte after the last data byte,
 at offset \fIlength\fR;
 this allows string representations
 to be treated as conventional null-terminated C strings.
-.VE 8.1
 C programs use \fBTcl_GetStringFromObj\fR and \fBTcl_GetString\fR to get
 an object's string representation.
 If \fIbytes\fR is NULL,
@@ -151,10 +153,11 @@ the internal representation is invalid.
 .PP
 The \fIinternalRep\fR union member holds
 an object's internal representation.
-This is either a (long) integer, a double-precision floating point number,
+This is either a (long) integer, a double-precision floating-point number,
 a pointer to a value containing additional information
-needed by the object's type to represent the object,
-or two arbitrary pointers.
+needed by the object's type to represent the object, a Tcl_WideInt
+integer, two arbitrary pointers, or a pair made up of an unsigned long
+integer and a pointer.
 .PP
 The \fIrefCount\fR member is used to tell when it is safe to free
 an object's storage.
@@ -224,7 +227,6 @@ creates a new internal representation for an object
 and changes its \fItypePtr\fR.
 See the man page for \fBTcl_RegisterObjType\fR
 to see how to create a new object type.
-
 .SH "EXAMPLE OF THE LIFETIME OF AN OBJECT"
 .PP
 As an example of the lifetime of an object,
@@ -262,9 +264,8 @@ no longer corresponds to the internal representation.
 .CE
 The string representation of \fIx\fR's object is needed
 and is recomputed.
-The string representation is now \fB124\fR.
+The string representation is now \fB124\fR
 and both representations are again valid.
-
 .SH "STORAGE MANAGEMENT OF OBJECTS"
 .PP
 Tcl objects are allocated on the heap and are shared as much as possible
@@ -281,7 +282,7 @@ if the object's reference count drops to zero, frees its storage.
 An object shared by different code or data structures has
 \fIrefCount\fR greater than 1.
 Incrementing an object's reference count ensures that
-it won't be freed too early or have its value change accidently.
+it will not be freed too early or have its value change accidentally.
 .PP
 As an example, the bytecode interpreter shares argument objects
 between calling and called Tcl procedures to avoid having to copy objects.
@@ -297,7 +298,7 @@ When an object's reference count drops less than or equal to zero,
 \fBTcl_DecrRefCount\fR reclaims its storage.
 Most command procedures do not have to be concerned about
 reference counting since they use an object's value immediately
-and don't retain a pointer to the object after they return.
+and do not retain a pointer to the object after they return.
 However, if they do retain a pointer to an object in a data structure,
 they must be careful to increment its reference count
 since the retained pointer is a new reference.
@@ -312,26 +313,29 @@ by using \fBTcl_DuplicateObj\fR;
 this returns a new duplicate of the original object
 that has \fIrefCount\fR 0.
 If the object is not shared,
-the command procedure "owns" the object and can safely modify it directly.
+the command procedure
+.QW "owns"
+the object and can safely modify it directly.
 For example, the following code appears in the command procedure
 that implements \fBlinsert\fR.
 This procedure modifies the list object passed to it in \fIobjv[1]\fR
 by inserting \fIobjc-3\fR new elements before \fIindex\fR.
+.PP
 .CS
 listPtr = objv[1];
 if (Tcl_IsShared(listPtr)) {
-	listPtr = Tcl_DuplicateObj(listPtr);
+    listPtr = Tcl_DuplicateObj(listPtr);
 }
-result = Tcl_ListObjReplace(interp, listPtr, index, 0, (objc-3), &(objv[3]));
+result = Tcl_ListObjReplace(interp, listPtr, index, 0,
+        (objc-3), &(objv[3]));
 .CE
+.PP
 As another example, \fBincr\fR's command procedure
 must check whether the variable's object is shared before
 incrementing the integer in its internal representation.
 If it is shared, it needs to duplicate the object
-in order to avoid accidently changing values in other data structures.
-
+in order to avoid accidentally changing values in other data structures.
 .SH "SEE ALSO"
-Tcl_ConvertToType, Tcl_GetIntFromObj, Tcl_ListObjAppendElement, Tcl_ListObjIndex, Tcl_ListObjReplace, Tcl_RegisterObjType
-
+Tcl_ConvertToType(3), Tcl_GetIntFromObj(3), Tcl_ListObjAppendElement(3), Tcl_ListObjIndex(3), Tcl_ListObjReplace(3), Tcl_RegisterObjType(3)
 .SH KEYWORDS
 internal representation, object, object creation, object type, reference counting, string representation, type conversion
diff --git a/doc/ObjectType.3 b/doc/ObjectType.3
index cc84fd1..974ea6c 100644
--- a/doc/ObjectType.3
+++ b/doc/ObjectType.3
@@ -24,12 +24,12 @@ int
 int
 \fBTcl_ConvertToType\fR(\fIinterp, objPtr, typePtr\fR)
 .SH ARGUMENTS
-.AS Tcl_ObjType *typeName in
+.AS "const char" *typeName
 .AP Tcl_ObjType *typePtr in
 Points to the structure containing information about the Tcl object type.
 This storage must live forever,
 typically by being statically allocated.
-.AP "CONST char" *typeName in
+.AP "const char" *typeName in
 The name of a Tcl object type that \fBTcl_GetObjType\fR should look up.
 .AP Tcl_Interp *interp in
 Interpreter to use for error reporting.
@@ -43,12 +43,14 @@ must have been the result of a previous call to \fBTcl_NewObj\fR.
 .SH DESCRIPTION
 .PP
 The procedures in this man page manage Tcl object types.
-The are used to register new object types,
-look up types,
+They are used to register new object types, look up types,
 and force conversions from one type to another.
 .PP
 \fBTcl_RegisterObjType\fR registers a new Tcl object type
-in the table of all object types supported by Tcl.
+in the table of all object types that \fBTcl_GetObjType\fR
+can look up by name.  There are other object types supported by Tcl
+as well, which Tcl chooses not to register.  Extensions can likewise
+choose to register the object types they create or not.
 The argument \fItypePtr\fR points to a Tcl_ObjType structure that
 describes the new type by giving its name
 and by supplying pointers to four procedures
@@ -59,11 +61,11 @@ it is replaced with the new type.
 The Tcl_ObjType structure is described
 in the section \fBTHE TCL_OBJTYPE STRUCTURE\fR below.
 .PP
-\fBTcl_GetObjType\fR returns a pointer to the Tcl_ObjType
+\fBTcl_GetObjType\fR returns a pointer to the registered Tcl_ObjType
 with name \fItypeName\fR.
 It returns NULL if no type with that name is registered.
 .PP
-\fBTcl_AppendAllObjTypes\fR appends the name of each object type
+\fBTcl_AppendAllObjTypes\fR appends the name of each registered object type
 as a list element onto the Tcl object referenced by \fIobjPtr\fR.
 The return value is \fBTCL_OK\fR unless there was an error
 converting \fIobjPtr\fR to a list object;
@@ -73,7 +75,8 @@ in that case \fBTCL_ERROR\fR is returned.
 if possible.
 It creates a new internal representation for \fIobjPtr\fR
 appropriate for the target type \fItypePtr\fR
-and sets its \fItypePtr\fR member to that type.
+and sets its \fItypePtr\fR member as determined by calling the 
+\fItypePtr->setFromAnyProc\fR routine.  
 Any internal representation for \fIobjPtr\fR's old type is freed.
 If an error occurs during conversion, it returns \fBTCL_ERROR\fR
 and leaves an error message in the result object for \fIinterp\fR
@@ -81,118 +84,168 @@ unless \fIinterp\fR is NULL.
 Otherwise, it returns \fBTCL_OK\fR.
 Passing a NULL \fIinterp\fR allows this procedure to be used
 as a test whether the conversion can be done (and in fact was done).
-
+.VS 8.5
+.PP
+In many cases, the \fItypePtr->setFromAnyProc\fR routine will
+set \fIobjPtr->typePtr\fR to the argument value \fItypePtr\fR,
+but that is no longer guaranteed.  The \fIsetFromAnyProc\fR is
+free to set the internal representation for \fIobjPtr\fR to make
+use of another related Tcl_ObjType, if it sees fit.
+.VE 8.5
 .SH "THE TCL_OBJTYPE STRUCTURE"
 .PP
 Extension writers can define new object types by defining four
-procedures,
-initializing a Tcl_ObjType structure to describe the type,
-and calling \fBTcl_RegisterObjType\fR.
+procedures and
+initializing a Tcl_ObjType structure to describe the type.
+Extension writers may also pass a pointer to their Tcl_ObjType
+structure to \fBTcl_RegisterObjType\fR if they wish to permit
+other extensions to look up their Tcl_ObjType by name with
+the \fBTcl_GetObjType\fR routine.
 The \fBTcl_ObjType\fR structure is defined as follows:
+.PP
 .CS
 typedef struct Tcl_ObjType {
-	char *\fIname\fR;
-	Tcl_FreeInternalRepProc *\fIfreeIntRepProc\fR;
-	Tcl_DupInternalRepProc *\fIdupIntRepProc\fR;
-	Tcl_UpdateStringProc *\fIupdateStringProc\fR;
-	Tcl_SetFromAnyProc *\fIsetFromAnyProc\fR;
+    char *\fIname\fR;
+    Tcl_FreeInternalRepProc *\fIfreeIntRepProc\fR;
+    Tcl_DupInternalRepProc *\fIdupIntRepProc\fR;
+    Tcl_UpdateStringProc *\fIupdateStringProc\fR;
+    Tcl_SetFromAnyProc *\fIsetFromAnyProc\fR;
 } Tcl_ObjType;
 .CE
+.SS "THE NAME FIELD"
 .PP
 The \fIname\fR member describes the name of the type, e.g. \fBint\fR.
-Extension writers can look up an object type using its name
-with the \fBTcl_GetObjType\fR procedure.
+When a type is registered, this is the name used by callers
+of \fBTcl_GetObjType\fR to lookup the type.  For unregistered
+types, the \fIname\fR field is primarily of value for debugging.
 The remaining four members are pointers to procedures
 called by the generic Tcl object code:
+.SS "THE SETFROMANYPROC FIELD"
 .PP
 The \fIsetFromAnyProc\fR member contains the address of a function
 called to create a valid internal representation
 from an object's string representation.
+.PP
 .CS
-typedef int (Tcl_SetFromAnyProc) (Tcl_Interp *\fIinterp\fR, Tcl_Obj *\fIobjPtr\fR);
+typedef int (Tcl_SetFromAnyProc) (Tcl_Interp *\fIinterp\fR,
+        Tcl_Obj *\fIobjPtr\fR);
 .CE
-If an internal representation can't be created from the string,
+.PP
+If an internal representation cannot be created from the string,
 it returns \fBTCL_ERROR\fR and puts a message
 describing the error in the result object for \fIinterp\fR
 unless \fIinterp\fR is NULL.
 If \fIsetFromAnyProc\fR is successful,
 it stores the new internal representation,
 sets \fIobjPtr\fR's \fItypePtr\fR member to point to
-\fIsetFromAnyProc\fR's \fBTcl_ObjType\fR, and returns \fBTCL_OK\fR.
+the \fBTcl_ObjType\fR struct corresponding to the new
+internal representation, and returns \fBTCL_OK\fR.
 Before setting the new internal representation,
 the \fIsetFromAnyProc\fR must free any internal representation
 of \fIobjPtr\fR's old type;
 it does this by calling the old type's \fIfreeIntRepProc\fR
 if it is not NULL.
-As an example, the \fIsetFromAnyProc\fR for the builtin Tcl integer type
+.PP
+As an example, the \fIsetFromAnyProc\fR for the built-in Tcl list type
 gets an up-to-date string representation for \fIobjPtr\fR
 by calling \fBTcl_GetStringFromObj\fR.
-It parses the string to obtain an integer and,
-if this succeeds,
-stores the integer in \fIobjPtr\fR's internal representation
-and sets \fIobjPtr\fR's \fItypePtr\fR member to point to the integer type's
+It parses the string to verify it is in a valid list format and
+to obtain each element value in the list, and, if this succeeds,
+stores the list elements in \fIobjPtr\fR's internal representation
+and sets \fIobjPtr\fR's \fItypePtr\fR member to point to the list type's
 Tcl_ObjType structure.
+.PP
 Do not release \fIobjPtr\fR's old internal representation unless you
 replace it with a new one or reset the \fItypePtr\fR member to NULL.
 .PP
+The \fIsetFromAnyProc\fR member may be set to NULL, if the routines
+making use of the internal representation have no need to derive that
+internal representation from an arbitrary string value.  However, in
+this case, passing a pointer to the type to Tcl_ConvertToType() will
+lead to a panic, so to avoid this possibility, the type
+should \fInot\fR be registered.
+.SS "THE UPDATESTRINGPROC FIELD"
+.PP
 The \fIupdateStringProc\fR member contains the address of a function
 called to create a valid string representation
 from an object's internal representation.
+.PP
 .CS
 typedef void (Tcl_UpdateStringProc) (Tcl_Obj *\fIobjPtr\fR);
 .CE
+.PP
 \fIobjPtr\fR's \fIbytes\fR member is always NULL when it is called.
 It must always set \fIbytes\fR non-NULL before returning.
 We require the string representation's byte array
-to have a null after the last byte, at offset \fIlength\fR;
-this allows string representations that do not contain null bytes
+to have a null after the last byte, at offset \fIlength\fR,
+and to have no null bytes before that; this allows string representations 
 to be treated as conventional null character-terminated C strings.
+These restrictions are easily met by using Tcl's internal UTF encoding
+for the string representation, same as one would do for other
+Tcl routines accepting string values as arguments.
 Storage for the byte array must be allocated in the heap by \fBTcl_Alloc\fR
 or \fBckalloc\fR.  Note that \fIupdateStringProc\fRs must allocate
 enough storage for the string's bytes and the terminating null byte.
-The \fIupdateStringProc\fR for Tcl's builtin list type, for example,
-builds an array of strings for each element object
-and then calls \fBTcl_Merge\fR
-to construct a string with proper Tcl list structure.
-It stores this string as the list object's string representation.
+.PP
+The \fIupdateStringProc\fR for Tcl's built-in double type, for example,
+calls Tcl_PrintDouble to write to a buffer of size TCL_DOUBLE_SPACE,
+then allocates and copies the string representation to just enough
+space to hold it.  A pointer to the allocated space is stored in
+the \fIbytes\fR member.
+.PP
+The \fIupdateStringProc\fR member may be set to NULL, if the routines
+making use of the internal representation are written so that the
+string representation is never invalidated.  Failure to meet this
+obligation will lead to panics or crashes when \fBTcl_GetStringFromObj\fR
+or other similar routines ask for the string representation.
+.SS "THE DUPINTREPPROC FIELD"
 .PP
 The \fIdupIntRepProc\fR member contains the address of a function
 called to copy an internal representation from one object to another.
+.PP
 .CS
-typedef void (Tcl_DupInternalRepProc) (Tcl_Obj *\fIsrcPtr\fR, Tcl_Obj *\fIdupPtr\fR);
+typedef void (Tcl_DupInternalRepProc) (Tcl_Obj *\fIsrcPtr\fR,
+        Tcl_Obj *\fIdupPtr\fR);
 .CE
+.PP
 \fIdupPtr\fR's internal representation is made a copy of \fIsrcPtr\fR's
 internal representation.
 Before the call,
 \fIsrcPtr\fR's internal representation is valid and \fIdupPtr\fR's is not.
 \fIsrcPtr\fR's object type determines what
 copying its internal representation means.
+.PP
 For example, the \fIdupIntRepProc\fR for the Tcl integer type
 simply copies an integer.
-The builtin list type's \fIdupIntRepProc\fR
-allocates a new array that points at the original element objects;
-the elements are shared between the two lists
-(and their reference counts are incremented to reflect the new references).
+The built-in list type's \fIdupIntRepProc\fR uses a far more
+sophisticated scheme to continue sharing storage as much as it
+reasonably can.
+.SS "THE FREEINTREPPROC FIELD"
 .PP
 The \fIfreeIntRepProc\fR member contains the address of a function
 that is called when an object is freed.
+.PP
 .CS
 typedef void (Tcl_FreeInternalRepProc) (Tcl_Obj *\fIobjPtr\fR);
 .CE
+.PP
 The \fIfreeIntRepProc\fR function can deallocate the storage
 for the object's internal representation
 and do other type-specific processing necessary when an object is freed.
-For example, Tcl list objects have an \fIinternalRep.otherValuePtr\fR
-that points to an array of pointers to each element in the list.
-The list type's \fIfreeIntRepProc\fR decrements
-the reference count for each element object
-(since the list will no longer refer to those objects),
-then deallocates the storage for the array of pointers.
+.PP
+For example, the list type's \fIfreeIntRepProc\fR respects
+the storage sharing scheme established by the \fIdupIntRepProc\fR
+so that it only frees storage when the last object sharing it
+is being freed.
+.PP
 The \fIfreeIntRepProc\fR member can be set to NULL
 to indicate that the internal representation does not require freeing.
-
+The \fIfreeIntRepProc\fR implementation must not access the
+\fIbytes\fR member of the object, since Tcl makes its own internal
+uses of that field during object deletion.  The defined tasks for
+the \fIfreeIntRepProc\fR have no need to consult the \fIbytes\fR
+member.
 .SH "SEE ALSO"
 Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount
-
 .SH KEYWORDS
 internal representation, object, object type, string representation, type conversion
diff --git a/doc/OpenFileChnl.3 b/doc/OpenFileChnl.3
index 33c57fa..0d722f6 100644
--- a/doc/OpenFileChnl.3
+++ b/doc/OpenFileChnl.3
@@ -9,7 +9,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-Tcl_OpenFileChannel, Tcl_OpenCommandChannel, Tcl_MakeFileChannel, Tcl_GetChannel, Tcl_GetChannelNames, Tcl_GetChannelNamesEx, Tcl_RegisterChannel, Tcl_UnregisterChannel, Tcl_DetachChannel, Tcl_IsStandardChannel, Tcl_Close, Tcl_ReadChars, Tcl_Read, Tcl_GetsObj, Tcl_Gets, Tcl_WriteObj, Tcl_WriteChars, Tcl_Write, Tcl_Flush, Tcl_Seek, Tcl_Tell, Tcl_GetChannelOption, Tcl_SetChannelOption, Tcl_Eof, Tcl_InputBlocked, Tcl_InputBuffered, Tcl_OutputBuffered, Tcl_Ungets, Tcl_ReadRaw, Tcl_WriteRaw \- buffered I/O facilities using channels
+Tcl_OpenFileChannel, Tcl_OpenCommandChannel, Tcl_MakeFileChannel, Tcl_GetChannel, Tcl_GetChannelNames, Tcl_GetChannelNamesEx, Tcl_RegisterChannel, Tcl_UnregisterChannel, Tcl_DetachChannel, Tcl_IsStandardChannel, Tcl_Close, Tcl_ReadChars, Tcl_Read, Tcl_GetsObj, Tcl_Gets, Tcl_WriteObj, Tcl_WriteChars, Tcl_Write, Tcl_Flush, Tcl_Seek, Tcl_Tell, Tcl_TruncateChannel, Tcl_GetChannelOption, Tcl_SetChannelOption, Tcl_Eof, Tcl_InputBlocked, Tcl_InputBuffered, Tcl_OutputBuffered, Tcl_Ungets, Tcl_ReadRaw, Tcl_WriteRaw \- buffered I/O facilities using channels
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -25,14 +25,12 @@ Tcl_Channel
 .sp
 Tcl_Channel
 \fBTcl_GetChannel\fR(\fIinterp, channelName, modePtr\fR)
-.VS 8.3
 .sp
 int
 \fBTcl_GetChannelNames\fR(\fIinterp\fR)
 .sp
 int
 \fBTcl_GetChannelNamesEx\fR(\fIinterp, pattern\fR)
-.VE
 .sp
 void
 \fBTcl_RegisterChannel\fR(\fIinterp, channel\fR)
@@ -49,7 +47,6 @@ int
 int
 \fBTcl_Close\fR(\fIinterp, channel\fR)
 .sp
-.VS 8.1
 int
 \fBTcl_ReadChars\fR(\fIchannel, readObjPtr, charsToRead, appendFlag\fR)
 .sp
@@ -73,15 +70,12 @@ int
 .sp
 int
 \fBTcl_Write\fR(\fIchannel, byteBuf, bytesToWrite\fR)
-.VE
-.VS 8.3.2
 .sp
 int
 \fBTcl_ReadRaw\fR(\fIchannel, readBuf, bytesToRead\fR)
 .sp
 int
 \fBTcl_WriteRaw\fR(\fIchannel, byteBuf, bytesToWrite\fR)
-.VE
 .sp
 int
 \fBTcl_Eof\fR(\fIchannel\fR)
@@ -94,19 +88,20 @@ int
 .sp
 int
 \fBTcl_InputBuffered\fR(\fIchannel\fR)
-.VS 8.4
 .sp
 int
 \fBTcl_OutputBuffered\fR(\fIchannel\fR)
-.VE
 .sp
-.VS 8.4
 Tcl_WideInt
 \fBTcl_Seek\fR(\fIchannel, offset, seekMode\fR)
 .sp
 Tcl_WideInt
 \fBTcl_Tell\fR(\fIchannel\fR)
-.VE 8.4
+.sp
+.VS 8.5
+int
+\fBTcl_TruncateChannel\fR(\fIchannel, length\fR)
+.VE 8.5
 .sp
 int
 \fBTcl_GetChannelOption\fR(\fIinterp, channel, optionName, optionValue\fR)
@@ -115,12 +110,12 @@ int
 \fBTcl_SetChannelOption\fR(\fIinterp, channel, optionName, newValue\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_ChannelType newClientProcPtr in
+.AS Tcl_DString *channelName in/out
 .AP Tcl_Interp *interp in
 Used for error reporting and to look up a channel registered in it.
-.AP "CONST char" *fileName in
+.AP "const char" *fileName in
 The name of a local or network file.
-.AP "CONST char" *mode in
+.AP "const char" *mode in
 Specifies how the file is to be accessed.  May have any of the values
 allowed for the \fImode\fR argument to the Tcl \fBopen\fR command.  
 .AP int permissions in
@@ -128,7 +123,7 @@ POSIX-style permission flags such as 0644.  If a new file is created, these
 permissions will be set on the created file.
 .AP int argc in
 The number of elements in \fIargv\fR.
-.AP "CONST char" **argv in
+.AP "const char" **argv in
 Arguments for constructing a command pipeline.  These values have the same
 meaning as the non-switch arguments to the Tcl \fBexec\fR command.
 .AP int flags in
@@ -147,20 +142,17 @@ file descriptor, for Windows it is a HANDLE.
 .AP int readOrWrite in
 OR-ed combination of \fBTCL_READABLE\fR and \fBTCL_WRITABLE\fR to indicate
 what operations are valid on \fIhandle\fR.
-.AP "CONST char" *channelName in
+.AP "const char" *channelName in
 The name of the channel. 
 .AP int *modePtr out
 Points at an integer variable that will receive an OR-ed combination of
 \fBTCL_READABLE\fR and \fBTCL_WRITABLE\fR denoting whether the channel is
 open for reading and writing.
-.VS 8.3
-.AP "CONST char" *pattern in
+.AP "const char" *pattern in
 The pattern to match on, passed to Tcl_StringMatch, or NULL.
-.VE
 .AP Tcl_Channel channel in
 A Tcl channel for input or output.  Must have been the return value
 from a procedure such as \fBTcl_OpenFileChannel\fR.
-.VS 8.1 br
 .AP Tcl_Obj *readObjPtr in/out
 A pointer to a Tcl Object in which to store the characters read from the
 channel.
@@ -184,25 +176,22 @@ object.
 A pointer to a Tcl dynamic string in which to store the line read from the
 channel.  Must have been initialized by the caller.  The line read will be
 appended to any data already in the dynamic string.
-.VS 8.3
-.AP "CONST char" *input in
+.AP "const char" *input in
 The input to add to a channel buffer.
 .AP int inputLen in
 Length of the input
 .AP int addAtEnd in
 Flag indicating whether the input should be added to the end or
 beginning of the channel buffer.
-.VE
 .AP Tcl_Obj *writeObjPtr in
 A pointer to a Tcl Object whose contents will be output to the channel.
-.AP "CONST char" *charBuf in
+.AP "const char" *charBuf in
 A buffer containing the characters to output to the channel.
-.AP "CONST char" *byteBuf in
+.AP "const char" *byteBuf in
 A buffer containing the bytes to output to the channel.
 .AP int bytesToWrite in
 The number of bytes to consume from \fIcharBuf\fR or \fIbyteBuf\fR and
 output to the channel.
-.VE
 .AP Tcl_WideInt offset in
 How far to move the access point in the channel at which the next input or
 output operation will be applied, measured in bytes from the position
@@ -211,13 +200,15 @@ given by \fIseekMode\fR.  May be either positive or negative.
 Relative to which point to seek; used with \fIoffset\fR to calculate the new
 access point for the channel. Legal values are \fBSEEK_SET\fR,
 \fBSEEK_CUR\fR, and \fBSEEK_END\fR.
-.AP "CONST char" *optionName in
+.AP Tcl_WideInt length in
+The (non-negative) length to truncate the channel the channel to.
+.AP "const char" *optionName in
 The name of an option applicable to this channel, such as \fB\-blocking\fR.
 May have any of the values accepted by the \fBfconfigure\fR command.
 .AP Tcl_DString *optionValue in
 Where to store the value of an option or a list of all options and their
 values. Must have been initialized by the caller.
-.AP "CONST char" *newValue in
+.AP "const char" *newValue in
 New value for the option given by \fIoptionName\fR.
 .BE
 
@@ -228,7 +219,7 @@ platform-independent mechanism for performing buffered input
 and output operations on a variety of file, socket, and device
 types.
 The channel mechanism is extensible to new channel types, by
-providing a low level channel driver for the new type; the channel driver
+providing a low-level channel driver for the new type; the channel driver
 interface is described in the manual entry for \fBTcl_CreateChannel\fR. The
 channel mechanism provides a buffering scheme modeled after
 Unix's standard I/O, and it also allows for nonblocking I/O on
@@ -255,8 +246,6 @@ leaves an error message in \fIinterp\fR's result after any error.
 As of Tcl 8.4, the object-based API \fBTcl_FSOpenFileChannel\fR should 
 be used in preference to \fBTcl_OpenFileChannel\fR wherever possible.
 .PP
-
-.PP
 The newly created channel is not registered in the supplied interpreter; to
 register it, use \fBTcl_RegisterChannel\fR, described below.
 If one of the standard channels, \fBstdin, stdout\fR or \fBstderr\fR was
@@ -349,7 +338,7 @@ reference to a channel that is also registered in a Tcl interpreter.
 .PP
 This procedure interacts with the code managing the standard
 channels. If no standard channels were initialized before the first
-call to \fBTcl_RegisterChannel\fR they will get initialized by that
+call to \fBTcl_RegisterChannel\fR, they will get initialized by that
 call. See \fBTcl_StandardChannels\fR for a general treatise about
 standard channels and the behaviour of the Tcl library with regard to
 them.
@@ -376,7 +365,7 @@ accessible in \fIinterp\fR. After this call, Tcl programs will no longer be
 able to use the channel's name to refer to the channel in that interpreter.
 Beyond that, this command has no further effect.  It cannot be used on
 the standard channels (stdout, stderr, stdin), and will return
-TCL_ERROR if passed one of those channels.
+\fBTCL_ERROR\fR if passed one of those channels.
 .PP
 Code not associated with a Tcl interpreter can call
 \fBTcl_DetachChannel\fR with \fIinterp\fR as NULL, to indicate to Tcl
@@ -423,7 +412,6 @@ been given as the \fBchan\fR argument in a call to
 when all calls to \fBTcl_RegisterChannel\fR have been matched by
 corresponding calls to \fBTcl_UnregisterChannel\fR.
 
-.VS 8.1 br
 .SH "TCL_READCHARS AND TCL_READ"
 .PP
 \fBTcl_ReadChars\fR consumes bytes from \fIchannel\fR, converting the bytes
@@ -434,7 +422,7 @@ that were stored in \fIreadObjPtr\fR.  If an error occurs while reading, the
 return value is \-1 and \fBTcl_ReadChars\fR records a POSIX error code that
 can be retrieved with \fBTcl_GetErrno\fR.
 .PP
-Setting \fIcharsToRead\fR to \fB-1\fR will cause the command to read
+Setting \fIcharsToRead\fR to \fB\-1\fR will cause the command to read
 all characters currently available (non-blocking) or everything until
 eof (blocking mode).
 .PP
@@ -467,7 +455,7 @@ from a channel, manipulated by calling \fBTcl_GetByteArrayFromObj\fR and
 related functions, and then written to a channel without the expense of ever
 converting to or from UTF-8.
 .PP
-\fBTcl_Read\fR is similar to \fBTcl_ReadChars\fR, except that it doesn't do
+\fBTcl_Read\fR is similar to \fBTcl_ReadChars\fR, except that it does not do
 encoding conversions, regardless of the channel's encoding.  It is deprecated
 and exists for backwards compatibility with non-internationalized Tcl
 extensions.  It consumes bytes from \fIchannel\fR and stores them in
@@ -519,9 +507,11 @@ at either the head or tail of the queue.  The pointer \fIinput\fR points
 to the data that is to be added.  The length of the input to add is given
 by \fIinputLen\fR.  A non-zero value of \fIaddAtEnd\fR indicates that the
 data is to be added at the end of queue; otherwise it will be added at the
-head of the queue.  If \fIchannel\fR has a "sticky" EOF set, no data will be
+head of the queue.  If \fIchannel\fR has a
+.QW sticky
+EOF set, no data will be
 added to the input queue.  \fBTcl_Ungets\fR returns \fIinputLen\fR or
--1 if an error occurs.
+\-1 if an error occurs.
 
 .SH "TCL_WRITECHARS, TCL_WRITEOBJ, AND TCL_WRITE"
 .PP
@@ -561,7 +551,7 @@ byte-oriented data can be read from a channel, manipulated by calling
 \fBTcl_GetByteArrayFromObj\fR and related functions, and then written to a
 channel without the expense of ever converting to or from UTF-8.
 .PP
-\fBTcl_Write\fR is similar to \fBTcl_WriteChars\fR except that it doesn't do
+\fBTcl_Write\fR is similar to \fBTcl_WriteChars\fR except that it does not do
 encoding conversions, regardless of the channel's encoding.  It is
 deprecated and exists for backwards compatibility with non-internationalized
 Tcl extensions.  It accepts \fIbytesToWrite\fR bytes of data at
@@ -577,7 +567,6 @@ not. Thus this function is \fBonly\fR usable for transformational
 channel drivers, i.e. drivers used in the middle of a stack of
 channels, to move data from the transformation into the channel below
 it.
-.VE
 
 .SH TCL_FLUSH
 .PP
@@ -609,6 +598,14 @@ After an error, the access point may or may not have been moved.
 \fBTcl_Tell\fR returns the current access point for a channel. The returned
 value is \-1 if the channel does not support seeking.
 
+.SH TCL_TRUNCATECHANNEL
+.PP
+.VS 8.5
+\fBTcl_TruncateChannel\fR truncates the file underlying \fIchannel\fR
+to a given \fIlength\fR of bytes. It returns \fBTCL_OK\fR if the
+operation succeeded, and \fBTCL_ERROR\fR otherwise.
+.VE 8.5
+
 .SH TCL_GETCHANNELOPTION
 .PP
 \fBTcl_GetChannelOption\fR retrieves, in \fIoptionValue\fR, the value of one of
@@ -658,11 +655,9 @@ buffered in the internal buffers for a channel. If the channel is not open
 for reading, this function always returns zero.
 
 .SH TCL_OUTPUTBUFFERED
-.VS 8.4
 \fBTcl_OutputBuffered\fR returns the number of bytes of output
 currently buffered in the internal buffers for a channel. If the
 channel is not open for writing, this function always returns zero.
-.VE
 
 .SH "PLATFORM ISSUES"
 .PP
@@ -673,7 +668,7 @@ call.  On Windows platforms, the handle is a file \fBHANDLE\fR when
 the channel was created with \fBTcl_OpenFileChannel\fR,
 \fBTcl_OpenCommandChannel\fR, or \fBTcl_MakeFileChannel\fR.  Other
 channel types may return a different type of handle on Windows
-platforms. 
+platforms.
 
 .SH "SEE ALSO"
 DString(3), fconfigure(n), filename(n), fopen(3), Tcl_CreateChannel(3)
diff --git a/doc/OpenTcp.3 b/doc/OpenTcp.3
index df14f44..98d8cb0 100644
--- a/doc/OpenTcp.3
+++ b/doc/OpenTcp.3
@@ -24,18 +24,18 @@ Tcl_Channel
 \fBTcl_OpenTcpServer\fR(\fIinterp, port, myaddr, proc, clientData\fR)
 .sp
 .SH ARGUMENTS
-.AS Tcl_ChannelType newClientProcPtr in
+.AS Tcl_TcpAcceptProc clientData
 .AP Tcl_Interp *interp in
 Tcl interpreter to use for error reporting.  If non-NULL and an
 error occurs, an error message is left in the interpreter's result.
 .AP int port in
 A port number to connect to as a client or to listen on as a server.
-.AP "CONST char" *host in
+.AP "const char" *host in
 A string specifying a host name or address for the remote end of the connection.
 .AP int myport in
 A port number for the client's end of the socket.  If 0, a port number
 is allocated at random.
-.AP "CONST char" *myaddr in
+.AP "const char" *myaddr in
 A string specifying the host name or address for network interface to use
 for the local end of the connection.  If NULL, a default interface is
 chosen.
@@ -113,24 +113,24 @@ replacement for the standard channel.
 .PP
 \fBTcl_OpenTcpServer\fR opens a TCP socket on the local host on a specified
 \fIport\fR and uses the Tcl event mechanism to accept requests from clients
-to connect to it.  The \fImyaddr\fP argument specifies the network interface.
-If \fImyaddr\fP is NULL the special address INADDR_ANY should be used to
+to connect to it. The \fImyaddr\fR argument specifies the network interface.
+If \fImyaddr\fR is NULL the special address INADDR_ANY should be used to
 allow connections from any network interface.
 Each time a client connects to this socket, Tcl creates a channel
 for the new connection and invokes \fIproc\fR with information about
-the channel.  \fIProc\fR must match the following prototype:
+the channel. \fIProc\fR must match the following prototype:
 .CS
 typedef void Tcl_TcpAcceptProc(
-	ClientData \fIclientData\fR,
-	Tcl_Channel \fIchannel\fR,
-	char *\fIhostName\fR,
-	int \fIport\fP);
+        ClientData \fIclientData\fR,
+        Tcl_Channel \fIchannel\fR,
+        char *\fIhostName\fR,
+        int \fIport\fR);
 .CE
 .PP
 The \fIclientData\fR argument will be the same as the \fIclientData\fR
 argument to \fBTcl_OpenTcpServer\fR, \fIchannel\fR will be the handle
 for the new channel, \fIhostName\fR points to a string containing
-the name of the client host making the connection, and \fIport\fP
+the name of the client host making the connection, and \fIport\fR
 will contain the client's port number.
 The new channel
 is opened for both input and output. 
@@ -162,13 +162,11 @@ If one of the standard channels, \fBstdin, stdout\fR or \fBstderr\fR was
 previously closed, the act of creating the new channel also assigns it as a
 replacement for the standard channel.
 
-.VS
 .SH "PLATFORM ISSUES"
 .PP
 On Unix platforms, the socket handle is a Unix file descriptor as
 returned by the \fBsocket\fR system call.  On the Windows platform, the
 socket handle is a \fBSOCKET\fR as defined in the WinSock API.
-.VE
 
 .SH "SEE ALSO"
 Tcl_OpenFileChannel(3), Tcl_RegisterChannel(3), vwait(n)
diff --git a/doc/Panic.3 b/doc/Panic.3
index 3fb0c83..b53ca11 100644
--- a/doc/Panic.3
+++ b/doc/Panic.3
@@ -7,7 +7,7 @@
 .BS
 '\"  Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-Tcl_Panic, Tcl_PanicVA, Tcl_SetPanicProc, panic, panicVA \- report fatal error and abort
+Tcl_Panic, Tcl_PanicVA, Tcl_SetPanicProc \- report fatal error and abort
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -21,21 +21,15 @@ void
 void
 \fBTcl_SetPanicProc\fR(\fIpanicProc\fR)
 .sp
-void
-\fBpanic\fR(\fIformat\fR, \fIarg\fR, \fIarg\fR, \fI...\fR)
-.sp
-void
-\fBpanicVA\fR(\fIformat\fR, \fIargList\fR)
-.sp
 .SH ARGUMENTS
 .AS Tcl_PanicProc *panicProc
-.AP "CONST char*" format in
+.AP "const char*" format in
 A printf-style format string.
 .AP "" arg in
 Arguments matching the format string.
 .AP va_list argList in
 An argument list of arguments matching the format string.
-Must have been initialized using \fBTCL_VARARGS_START\fR,
+Must have been initialized using \fBva_start\fR,
 and cleared using \fBva_end\fR.
 .AP Tcl_PanicProc *panicProc in
 Procedure to report fatal error message and abort.
@@ -51,7 +45,7 @@ to display a message describing the error and abort the process.  The
 \fIformat\fR argument is a format string describing how to format the
 remaining arguments \fIarg\fR into an error message, according to the
 same formatting rules used by the \fBprintf\fR family of functions.  The
-same formatting rules are also used by the builtin Tcl command
+same formatting rules are also used by the built-in Tcl command
 \fBformat\fR.
 .PP
 In a freshly loaded Tcl library, \fBTcl_Panic\fR prints the formatted
@@ -65,8 +59,8 @@ type \fBTcl_PanicProc\fR:
 .PP
 .CS
 typedef void Tcl_PanicProc(
-	CONST char *\fBformat\fR,
-	\fBarg\fR, \fBarg\fR,...);
+        const char *\fBformat\fR,
+        \fBarg\fR, \fBarg\fR,...);
 .CE
 .PP
 After \fBTcl_SetPanicProc\fR returns, any future calls to
@@ -92,11 +86,7 @@ have a panic message displayed the same way that panic messages from Tcl
 will be displayed.
 .PP
 \fBTcl_PanicVA\fR is the same as \fBTcl_Panic\fR except that instead of
-taking a variable number of arguments it takes an argument list.  The
-procedures \fBpanic\fR and \fBpanicVA\fR are synonyms (implemented as
-macros) for \fBTcl_Panic\fR and \fBTcl_PanicVA\fR, respectively.  They
-exist to support old code; new code should use direct calls to
-\fBTcl_Panic\fR or \fBTcl_PanicVA\fR.
+taking a variable number of arguments it takes an argument list.
 
 .SH "SEE ALSO"
 abort(3), printf(3), exec(n), format(n)
diff --git a/doc/ParseCmd.3 b/doc/ParseCmd.3
index af6b02e..b5fc6d0 100644
--- a/doc/ParseCmd.3
+++ b/doc/ParseCmd.3
@@ -14,22 +14,22 @@ Tcl_ParseCommand, Tcl_ParseExpr, Tcl_ParseBraces, Tcl_ParseQuotedString, Tcl_Par
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_ParseCommand\fR(\fIinterp, string, numBytes, nested, parsePtr\fR)
+\fBTcl_ParseCommand\fR(\fIinterp, start, numBytes, nested, parsePtr\fR)
 .sp
 int
-\fBTcl_ParseExpr\fR(\fIinterp, string, numBytes, parsePtr\fR)
+\fBTcl_ParseExpr\fR(\fIinterp, start, numBytes, parsePtr\fR)
 .sp
 int
-\fBTcl_ParseBraces\fR(\fIinterp, string, numBytes, parsePtr, append, termPtr\fR)
+\fBTcl_ParseBraces\fR(\fIinterp, start, numBytes, parsePtr, append, termPtr\fR)
 .sp
 int
-\fBTcl_ParseQuotedString\fR(\fIinterp, string, numBytes, parsePtr, append, termPtr\fR)
+\fBTcl_ParseQuotedString\fR(\fIinterp, start, numBytes, parsePtr, append, termPtr\fR)
 .sp
 int
-\fBTcl_ParseVarName\fR(\fIinterp, string, numBytes, parsePtr, append\fR)
+\fBTcl_ParseVarName\fR(\fIinterp, start, numBytes, parsePtr, append\fR)
 .sp
-CONST char *
-\fBTcl_ParseVar\fR(\fIinterp, string, termPtr\fR)
+const char *
+\fBTcl_ParseVar\fR(\fIinterp, start, termPtr\fR)
 .sp
 \fBTcl_FreeParse\fR(\fIusedParsePtr\fR)
 .sp
@@ -39,7 +39,7 @@ Tcl_Obj *
 int
 \fBTcl_EvalTokensStandard\fR(\fIinterp, tokenPtr, numTokens\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *usedParsePtr
+.AS Tcl_Interp *usedParsePtr out
 .AP Tcl_Interp *interp out
 For procedures other than \fBTcl_FreeParse\fR, \fBTcl_EvalTokens\fR
 and \fBTcl_EvalTokensStandard\fR, used only for error reporting;
@@ -47,12 +47,12 @@ if NULL, then no error messages are left after errors.
 For \fBTcl_EvalTokens\fR and \fBTcl_EvalTokensStandard\fR,
 determines the context for evaluating the
 script and also is used for error reporting; must not be NULL.
-.AP "CONST char" *string in
+.AP "const char" *start in
 Pointer to first character in string to parse.
 .AP int numBytes in
-Number of bytes in \fIstring\fR, not including any terminating null
+Number of bytes in string to parse, not including any terminating null
 character.  If less than 0 then the script consists of all characters
-in \fIstring\fR up to the first null character.
+following \fIstart\fR up to the first null character.
 .AP int nested in
 Non-zero means that the script is part of a command substitution so an
 unquoted close bracket should be treated as a command terminator.  If zero,
@@ -69,7 +69,7 @@ Any previous information in this structure
 is ignored, unless \fIappend\fR is non-zero in a call to
 \fBTcl_ParseBraces\fR, \fBTcl_ParseQuotedString\fR,
 or \fBTcl_ParseVarName\fR.
-.AP "CONST char" **termPtr out
+.AP "const char" **termPtr out
 If not NULL, points to a location where
 \fBTcl_ParseBraces\fR, \fBTcl_ParseQuotedString\fR, and
 \fBTcl_ParseVar\fR will store a pointer to the character
@@ -90,7 +90,7 @@ and fills in the structure pointed to by \fIparsePtr\fR
 with a collection of tokens describing the information that was parsed.
 The procedures normally return \fBTCL_OK\fR.
 However, if an error occurs then they return \fBTCL_ERROR\fR,
-leave an error message in \fIinterp's\fR result
+leave an error message in \fIinterp\fR's result
 (if \fIinterp\fR is not NULL),
 and leave nothing in \fIparsePtr\fR.
 .PP
@@ -117,9 +117,9 @@ result, and no information is left at \fI*parsePtr\fR.
 .PP
 \fBTcl_ParseBraces\fR parses a string or command argument
 enclosed in braces such as
-\fB{hello}\fR or \fB{string \\t with \\t tabs}\fR
-from the beginning of its argument \fIstring\fR.
-The first character of \fIstring\fR must be \fB{\fR. 
+\fB{hello}\fR or \fB{string \et with \et tabs}\fR
+from the beginning of its argument \fIstart\fR.
+The first character of \fIstart\fR must be \fB{\fR. 
 If the braced string was parsed successfully,
 \fBTcl_ParseBraces\fR returns \fBTCL_OK\fR,
 fills in the structure pointed to by \fIparsePtr\fR
@@ -133,15 +133,15 @@ an error message is left in \fIinterp\fR's result,
 and no information is left at \fI*parsePtr\fR or \fI*termPtr\fR.
 .PP
 \fBTcl_ParseQuotedString\fR parses a double-quoted string such as
-\fB"sum is [expr $a+$b]"\fR
-from the beginning of the argument \fIstring\fR.
-The first character of \fIstring\fR must be \fB"\fR. 
+\fB"sum is [expr {$a+$b}]"\fR
+from the beginning of the argument \fIstart\fR.
+The first character of \fIstart\fR must be \fB\N'34'\fR. 
 If the double-quoted string was parsed successfully,
 \fBTcl_ParseQuotedString\fR returns \fBTCL_OK\fR,
 fills in the structure pointed to by \fIparsePtr\fR
 with information about the structure of the string
 (see below for details),
-and stores a pointer to the character just after the terminating \fB"\fR
+and stores a pointer to the character just after the terminating \fB\N'34'\fR
 in the location given by \fI*termPtr\fR.
 If an error occurs while parsing the string
 then \fBTCL_ERROR\fR is returned,
@@ -149,20 +149,20 @@ an error message is left in \fIinterp\fR's result,
 and no information is left at \fI*parsePtr\fR or \fI*termPtr\fR.
 .PP
 \fBTcl_ParseVarName\fR parses a Tcl variable reference such as
-\fB$abc\fR or \fB$x([expr $index + 1])\fR from the beginning of its
-\fIstring\fR argument.
-The first character of \fIstring\fR must be \fB$\fR. 
+\fB$abc\fR or \fB$x([expr {$index + 1}])\fR from the beginning of its
+\fIstart\fR argument.
+The first character of \fIstart\fR must be \fB$\fR. 
 If a variable name was parsed successfully, \fBTcl_ParseVarName\fR
 returns \fBTCL_OK\fR and fills in the structure pointed to by
 \fIparsePtr\fR with information about the structure of the variable name
 (see below for details).  If an error
 occurs while parsing the command then \fBTCL_ERROR\fR is returned, an
-error message is left in \fIinterp\fR's result (if \fIinterp\fR isn't
+error message is left in \fIinterp\fR's result (if \fIinterp\fR is not
 NULL), and no information is left at \fI*parsePtr\fR.
 .PP
 \fBTcl_ParseVar\fR parse a Tcl variable reference such as \fB$abc\fR
-or \fB$x([expr $index + 1])\fR from the beginning of its \fIstring\fR
-argument.  The first character of \fIstring\fR must be \fB$\fR.  If
+or \fB$x([expr {$index + 1}])\fR from the beginning of its \fIstart\fR
+argument.  The first character of \fIstart\fR must be \fB$\fR.  If
 the variable name is parsed successfully, \fBTcl_ParseVar\fR returns a
 pointer to the string value of the variable.  If an error occurs while
 parsing, then NULL is returned and an error message is left in
@@ -210,21 +210,21 @@ of \fBTcl_EvalTokens\fR is deprecated.
 return parse information in two data structures, Tcl_Parse and Tcl_Token:
 .CS
 typedef struct Tcl_Parse {
-	CONST char *\fIcommentStart\fR;
-	int \fIcommentSize\fR;
-	CONST char *\fIcommandStart\fR;
-	int \fIcommandSize\fR;
-	int \fInumWords\fR;
-	Tcl_Token *\fItokenPtr\fR;
-	int \fInumTokens\fR;
-	...
+        const char *\fIcommentStart\fR;
+        int \fIcommentSize\fR;
+        const char *\fIcommandStart\fR;
+        int \fIcommandSize\fR;
+        int \fInumWords\fR;
+        Tcl_Token *\fItokenPtr\fR;
+        int \fInumTokens\fR;
+        ...
 } Tcl_Parse;
 
 typedef struct Tcl_Token {
-    int \fItype\fR;
-    CONST char *\fIstart\fR;
-    int \fIsize\fR;
-    int \fInumComponents\fR;
+        int \fItype\fR;
+        const char *\fIstart\fR;
+        int \fIsize\fR;
+        int \fInumComponents\fR;
 } Tcl_Token;
 .CE
 .PP
@@ -285,6 +285,16 @@ This token has the same meaning as \fBTCL_TOKEN_WORD\fR, except that
 the word is guaranteed to consist of a single \fBTCL_TOKEN_TEXT\fR
 sub-token.  The \fInumComponents\fR field is always 1.
 .TP
+\fBTCL_TOKEN_EXPAND_WORD\fR
+.VS 8.5
+This token has the same meaning as \fBTCL_TOKEN_WORD\fR, except that
+the command parser notes this word began with the expansion
+prefix \fB{*}\fR, indicating that after substitution,
+the list value of this word should be expanded to form multiple
+arguments in command evaluation.  This
+token type can only be created by Tcl_ParseCommand.
+.VE 8.5
+.TP
 \fBTCL_TOKEN_TEXT\fR
 The token describes a range of literal text that is part of a word.
 The \fInumComponents\fR field is always 0.
@@ -294,7 +304,7 @@ The token describes a backslash sequence such as \fB\en\fR or \fB\e0xa3\fR.
 The \fInumComponents\fR field is always 0.
 .TP
 \fBTCL_TOKEN_COMMAND\fR
-The token describes a command whose result result must be substituted into
+The token describes a command whose result must be substituted into
 the word.  The token includes the square brackets that surround the
 command.  The \fInumComponents\fR field is always 0 (the nested command
 is not parsed; call \fBTcl_ParseCommand\fR recursively if you want to
@@ -344,7 +354,7 @@ this includes the sub-tokens for any nested \fBTCL_TOKEN_SUB_EXPR\fR tokens.
 \fBTCL_TOKEN_OPERATOR\fR
 The token describes one operator of an expression
 such as \fB&&\fR or \fBhypot\fR.
-An \fBTCL_TOKEN_OPERATOR\fR token is always preceded by a
+A \fBTCL_TOKEN_OPERATOR\fR token is always preceded by a
 \fBTCL_TOKEN_SUB_EXPR\fR token
 that describes the operator and its operands;
 the \fBTCL_TOKEN_SUB_EXPR\fR token's \fInumComponents\fR field
@@ -352,7 +362,7 @@ can be used to determine the number of operands.
 A binary operator such as \fB*\fR
 is followed by two \fBTCL_TOKEN_SUB_EXPR\fR tokens
 that describe its operands.
-A unary operator like \fB-\fR
+A unary operator like \fB\-\fR
 is followed by a single \fBTCL_TOKEN_SUB_EXPR\fR token
 for its operand.
 If the operator is a math function such as \fBlog10\fR,
@@ -373,12 +383,16 @@ is always 0.
 After \fBTcl_ParseCommand\fR returns, the first token pointed to by
 the \fItokenPtr\fR field of the
 Tcl_Parse structure always has type \fBTCL_TOKEN_WORD\fR or
-\fBTCL_TOKEN_SIMPLE_WORD\fR.  It is followed by the sub-tokens
+.VS 8.5
+\fBTCL_TOKEN_SIMPLE_WORD\fR or \fBTCL_TOKEN_EXPAND_WORD\fR.  
+It is followed by the sub-tokens
 that must be concatenated to produce the value of that word.
 The next token is the \fBTCL_TOKEN_WORD\fR or \fBTCL_TOKEN_SIMPLE_WORD\fR
-token for the second word, followed by sub-tokens for that
+of \fBTCL_TOKEN_EXPAND_WORD\fR token for the second word,
+followed by sub-tokens for that
 word, and so on until all \fInumWords\fR have been accounted
 for.
+.VE 8.5
 .PP
 After \fBTcl_ParseExpr\fR returns, the first token pointed to by
 the \fItokenPtr\fR field of the
@@ -415,7 +429,7 @@ Tcl_Parse structure depends on the contents of the quoted string.
 It will consist of one or more \fBTCL_TOKEN_TEXT\fR, \fBTCL_TOKEN_BS\fR,
 \fBTCL_TOKEN_COMMAND\fR, and \fBTCL_TOKEN_VARIABLE\fR sub-tokens.
 The array always contains at least one token;
-for example, if the argument \fIstring\fR is empty,
+for example, if the argument \fIstart\fR is empty,
 the array returned consists of a single \fBTCL_TOKEN_TEXT\fR token
 with a zero \fIsize\fR field.
 Only the token information in the Tcl_Parse structure
@@ -436,7 +450,7 @@ the \fIcommentStart\fR, \fIcommentSize\fR,
 .PP
 All of the character pointers in the
 Tcl_Parse and Tcl_Token structures refer
-to characters in the \fIstring\fR argument passed to
+to characters in the \fIstart\fR argument passed to
 \fBTcl_ParseCommand\fR, \fBTcl_ParseExpr\fR, \fBTcl_ParseBraces\fR,
 \fBTcl_ParseQuotedString\fR, and \fBTcl_ParseVarName\fR.
 .PP
diff --git a/doc/PkgRequire.3 b/doc/PkgRequire.3
index fcccd58..810947d 100644
--- a/doc/PkgRequire.3
+++ b/doc/PkgRequire.3
@@ -8,21 +8,24 @@
 .TH Tcl_PkgRequire 3 7.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_PkgRequire, Tcl_PkgRequireEx, Tcl_PkgPresent, Tcl_PkgPresentEx, Tcl_PkgProvide, Tcl_PkgProvideEx \- package version control
+Tcl_PkgRequire, Tcl_PkgRequireEx, Tcl_PkgRequireProc, Tcl_PkgPresent, Tcl_PkgPresentEx, Tcl_PkgProvide, Tcl_PkgProvideEx \- package version control
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
 .sp
-CONST char *
+const char *
 \fBTcl_PkgRequire\fR(\fIinterp, name, version, exact\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_PkgRequireEx\fR(\fIinterp, name, version, exact, clientDataPtr\fR)
 .sp
-CONST char *
+int
+\fBTcl_PkgRequireProc\fR(\fIinterp, name, objc, objv, clientDataPtr\fR)
+.sp
+const char *
 \fBTcl_PkgPresent\fR(\fIinterp, name, version, exact\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_PkgPresentEx\fR(\fIinterp, name, version, exact, clientDataPtr\fR)
 .sp
 int
@@ -31,12 +34,12 @@ int
 int
 \fBTcl_PkgProvideEx\fR(\fIinterp, name, version, clientData\fR)
 .SH ARGUMENTS
-.AS ClientData clientDataPtr
+.AS ClientData clientDataPtr out
 .AP Tcl_Interp *interp in
 Interpreter where package is needed or available.
-.AP "CONST char" *name in
+.AP "const char" *name in
 Name of package.
-.AP "CONST char" *version in
+.AP "const char" *version in
 A version string consisting of one or more decimal numbers
 separated by dots.
 .AP int exact in
@@ -51,7 +54,12 @@ Arbitrary value to be associated with the package.
 Pointer to place to store the value associated with the matching
 package. It is only changed if the pointer is not NULL and the
 function completed successfully.
+.AP int objc in
+Number of requirements.
+.AP Tcl_Obj* objv[] in
+Array of requirements.
 .BE
+
 .SH DESCRIPTION
 .PP
 These procedures provide C-level interfaces to Tcl's package and
@@ -71,13 +79,18 @@ that is provided in the interpreter (which may be different than
 \fIversion\fR); if an error occurs they return NULL and leave an error 
 message in the interpreter's result.
 .PP
-\fBTcl_PkgProvide\fR returns TCL_OK if it completes successfully;
-if an error occurs it returns TCL_ERROR and leaves an error message
+\fBTcl_PkgProvide\fR returns \fBTCL_OK\fR if it completes successfully;
+if an error occurs it returns \fBTCL_ERROR\fR and leaves an error message
 in the interpreter's result.
 .PP
 \fBTcl_PkgProvideEx\fR, \fBTcl_PkgPresentEx\fR and \fBTcl_PkgRequireEx\fR
 allow the setting and retrieving of the client data associated with
 the package. In all other respects they are equivalent to the matching
 functions.
+.PP
+\fBTcl_PkgRequireProc\fR is the form of \fBpackage require\fR handling
+multiple requirements. The other forms are present for backward
+compatibility and translate their invocations to this form.
+
 .SH KEYWORDS
 package, present, provide, require, version
diff --git a/doc/Preserve.3 b/doc/Preserve.3
index b5d608e..2b3edc0 100644
--- a/doc/Preserve.3
+++ b/doc/Preserve.3
@@ -9,7 +9,7 @@
 .TH Tcl_Preserve 3 7.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_Preserve, Tcl_Release, Tcl_EventuallyFree \- avoid freeing storage while it's being used
+Tcl_Preserve, Tcl_Release, Tcl_EventuallyFree \- avoid freeing storage while it is being used
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -36,7 +36,7 @@ having to do with widget deletion, but are also useful in many other
 situations.  When a widget is deleted, its
 widget record (the structure holding information specific to the
 widget) must be returned to the storage allocator.
-However, it's possible that the widget record is in active use
+However, it is possible that the widget record is in active use
 by one of the procedures on the stack at the time of the deletion.
 This can happen, for example, if the command associated with a button
 widget causes the button to be destroyed:  an X event causes an
diff --git a/doc/PrintDbl.3 b/doc/PrintDbl.3
index 75e7663..279b4d5 100644
--- a/doc/PrintDbl.3
+++ b/doc/PrintDbl.3
@@ -16,19 +16,17 @@ Tcl_PrintDouble \- Convert floating value to string
 .sp
 \fBTcl_PrintDouble\fR(\fIinterp, value, dst\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *interp
+.AS Tcl_Interp *interp out
 .AP Tcl_Interp *interp in
-.VS
 Before Tcl 8.0, the \fBtcl_precision\fR variable in this interpreter
 controlled the conversion.  As of Tcl 8.0, this argument is ignored and
 the conversion is controlled by the \fBtcl_precision\fR variable
 that is now shared by all interpreters.
-.VE
 .AP double value in
 Floating-point value to be converted.
 .AP char *dst out
-Where to store string representing \fIvalue\fR.  Must have at
-least TCL_DOUBLE_SPACE characters of storage.
+Where to store the string representing \fIvalue\fR.  Must have at
+least \fBTCL_DOUBLE_SPACE\fR characters of storage.
 .BE
 
 .SH DESCRIPTION
@@ -36,10 +34,22 @@ least TCL_DOUBLE_SPACE characters of storage.
 \fBTcl_PrintDouble\fR generates a string that represents the value
 of \fIvalue\fR and stores it in memory at the location given by
 \fIdst\fR.  It uses \fB%g\fR format to generate the string, with one
-special twist: the string is guaranteed to contain either
-a ``.'' or an ``e'' so that it doesn't look like an integer.  Where
-\fB%g\fR would generate an integer with no decimal point, \fBTcl_PrintDouble\fR
-adds ``.0''.
+special twist: the string is guaranteed to contain either a
+.QW .
+or an
+.QW e
+so that it does not look like an integer.  Where \fB%g\fR would
+generate an integer with no decimal point, \fBTcl_PrintDouble\fR adds
+.QW .0 .
+.VS 8.5
+.PP
+If the \fBtcl_precision\fR value is non-zero, the result will have
+precisely that many digits of significance.  If the value is zero
+(the default), the result will have the fewest digits needed to
+represent the number in such a way that \fBTcl_NewDoubleObj\fR
+will generate the same number when presented with the given string.
+IEEE semantics of rounding to even apply to the conversion.
+.VE
 
 .SH KEYWORDS
 conversion, double-precision, floating-point, string
diff --git a/doc/RecEvalObj.3 b/doc/RecEvalObj.3
index 25982c8..2eed471 100644
--- a/doc/RecEvalObj.3
+++ b/doc/RecEvalObj.3
@@ -16,15 +16,15 @@ Tcl_RecordAndEvalObj \- save command on history list before evaluating
 int
 \fBTcl_RecordAndEvalObj\fR(\fIinterp, cmdPtr, flags\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *interp;
+.AS Tcl_Interp *interp
 .AP Tcl_Interp *interp in
 Tcl interpreter in which to evaluate command.
 .AP Tcl_Obj *cmdPtr in
 Points to a Tcl object containing a command (or sequence of commands)
 to execute.
 .AP int flags in
-An OR'ed combination of flag bits.  TCL_NO_EVAL means record the
-command but don't evaluate it.  TCL_EVAL_GLOBAL means evaluate
+An OR'ed combination of flag bits.  \fBTCL_NO_EVAL\fR means record the
+command but do not evaluate it.  \fBTCL_EVAL_GLOBAL\fR means evaluate
 the command at global level instead of the current stack level.
 .BE
 
@@ -32,18 +32,18 @@ the command at global level instead of the current stack level.
 .PP
 \fBTcl_RecordAndEvalObj\fR is invoked to record a command as an event
 on the history list and then execute it using \fBTcl_EvalObjEx\fR
-(or \fBTcl_GlobalEvalObj\fR if the TCL_EVAL_GLOBAL bit is set
+(or \fBTcl_GlobalEvalObj\fR if the \fBTCL_EVAL_GLOBAL\fR bit is set
 in \fIflags\fR).
-It returns a completion code such as TCL_OK just like \fBTcl_EvalObjEx\fR,
+It returns a completion code such as \fBTCL_OK\fR just like \fBTcl_EvalObjEx\fR,
 as well as a result object containing additional information
 (a result value or error message)
 that can be retrieved using \fBTcl_GetObjResult\fR.
-If you don't want the command recorded on the history list then
+If you do not want the command recorded on the history list then
 you should invoke \fBTcl_EvalObjEx\fR instead of \fBTcl_RecordAndEvalObj\fR.
 Normally \fBTcl_RecordAndEvalObj\fR is only called with top-level
 commands typed by the user, since the purpose of history is to
-allow the user to re-issue recently-invoked commands.
-If the \fIflags\fR argument contains the TCL_NO_EVAL bit then
+allow the user to re-issue recently invoked commands.
+If the \fIflags\fR argument contains the \fBTCL_NO_EVAL\fR bit then
 the command is recorded without being evaluated.
 
 .SH "SEE ALSO"
diff --git a/doc/RecordEval.3 b/doc/RecordEval.3
index 4ca030d..a8f3087 100644
--- a/doc/RecordEval.3
+++ b/doc/RecordEval.3
@@ -17,14 +17,14 @@ Tcl_RecordAndEval \- save command on history list before evaluating
 int
 \fBTcl_RecordAndEval\fR(\fIinterp, cmd, flags\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp *interp;
+.AS Tcl_Interp *interp
 .AP Tcl_Interp *interp in
 Tcl interpreter in which to evaluate command.
-.AP "CONST char" *cmd in
+.AP "const char" *cmd in
 Command (or sequence of commands) to execute.
 .AP int flags in
-An OR'ed combination of flag bits.  TCL_NO_EVAL means record the
-command but don't evaluate it.  TCL_EVAL_GLOBAL means evaluate
+An OR'ed combination of flag bits.  \fBTCL_NO_EVAL\fR means record the
+command but do not evaluate it.  \fBTCL_EVAL_GLOBAL\fR means evaluate
 the command at global level instead of the current stack level.
 .BE
 
@@ -32,15 +32,15 @@ the command at global level instead of the current stack level.
 .PP
 \fBTcl_RecordAndEval\fR is invoked to record a command as an event
 on the history list and then execute it using \fBTcl_Eval\fR
-(or \fBTcl_GlobalEval\fR if the TCL_EVAL_GLOBAL bit is set in \fIflags\fR).
-It returns a completion code such as TCL_OK just like \fBTcl_Eval\fR
+(or \fBTcl_GlobalEval\fR if the \fBTCL_EVAL_GLOBAL\fR bit is set in \fIflags\fR).
+It returns a completion code such as \fBTCL_OK\fR just like \fBTcl_Eval\fR
 and it leaves information in the interpreter's result.
-If you don't want the command recorded on the history list then
+If you do not want the command recorded on the history list then
 you should invoke \fBTcl_Eval\fR instead of \fBTcl_RecordAndEval\fR.
 Normally \fBTcl_RecordAndEval\fR is only called with top-level
 commands typed by the user, since the purpose of history is to
 allow the user to re-issue recently-invoked commands.
-If the \fIflags\fR argument contains the TCL_NO_EVAL bit then
+If the \fIflags\fR argument contains the \fBTCL_NO_EVAL\fR bit then
 the command is recorded without being evaluated.
 .PP
 Note that \fBTcl_RecordAndEval\fR has been largely replaced by the
diff --git a/doc/RegConfig.3 b/doc/RegConfig.3
new file mode 100644
index 0000000..19c0bb0
--- /dev/null
+++ b/doc/RegConfig.3
@@ -0,0 +1,112 @@
+'\"
+'\" Copyright (c) 2002 Andreas Kupries <andreas_kupries@users.sourceforge.net>
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.so man.macros
+.TH Tcl_RegisterConfig 3 8.4 Tcl "Tcl Library Procedures"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+Tcl_RegisterConfig \- procedures to register embedded configuration information
+.SH SYNOPSIS
+.nf
+\fB#include <tcl.h>\fR
+.sp
+void
+\fBTcl_RegisterConfig\fR(\fIinterp, pkgName, configuration, valEncoding\fR)
+.sp
+.SH ARGUMENTS
+.AS Tcl_Interp *configuration
+.AP Tcl_Interp *interp in
+Refers to the interpreter the embedded configuration information is
+registered for. Must not be NULL.
+.AP "const char" *pkgName in
+Contains the name of the package registering the embedded
+configuration as ASCII string. This means that this information is in
+UTF-8 too. Must not be NULL.
+.AP Tcl_Config *configuration in
+Refers to an array of Tcl_Config entries containing the information
+embedded in the binary library. Must not be NULL. The end of the array
+is signaled by either a key identical to NULL, or a key referring to
+the empty string.
+.AP "const char" *valEncoding in
+Contains the name of the encoding used to store the configuration
+values as ASCII string. This means that this information is in UTF-8
+too. Must not be NULL.
+.BE
+
+.SH DESCRIPTION
+.PP
+The function described here has its base in TIP 59 and provides
+extensions with support for the embedding of configuration
+information into their binary library and the generation of a
+Tcl-level interface for querying this information.
+.PP
+To embed configuration information into their binary library an
+extension has to define a non-volatile array of Tcl_Config entries in
+one if its source files and then call \fBTcl_RegisterConfig\fR to
+register that information.
+.PP
+\fBTcl_RegisterConfig\fR takes four arguments; first, a reference to
+the interpreter we are registering the information with, second, the
+name of the package registering its configuration information, third,
+a pointer to an array of structures, and fourth a string declaring the
+encoding used by the configuration values.
+.PP
+The string \fIvalEncoding\fR contains the name of an encoding known to
+Tcl.  All these names are use only characters in the ASCII subset of
+UTF-8 and are thus implicitly in the UTF-8 encoding. It is expected
+that keys are legible English text and therefore using the ASCII
+subset of UTF-8. In other words, they are expected to be in UTF-8
+too. The values associated with the keys can be any string
+however. For these the contents of \fIvalEncoding\fR define which
+encoding was used to represent the characters of the strings.
+.PP
+Each element of the \fIconfiguration\fR array refers to two strings
+containing the key and the value associated with that key. The end of
+the array is signaled by either an empty key or a key identical to
+NULL. The function makes \fBno\fR copy of the \fIconfiguration\fR
+array. This means that the caller has to make sure that the memory
+holding this array is never released. This is the meaning behind the
+word \fBnon-volatile\fR used earlier. The easiest way to accomplish
+this is to define a global static array of Tcl_Config entries. See the file
+.QW generic/tclPkgConfig.c
+in the sources of the Tcl core for an example.
+.PP
+When called \fBTcl_RegisterConfig\fR will
+.IP (1)
+create a namespace having the provided \fIpkgName\fR, if not yet
+existing.
+.IP (2)
+create the command \fBpkgconfig\fR in that namespace and link it to
+the provided information so that the keys from _configuration_ and
+their associated values can be retrieved through calls to
+\fBpkgconfig\fR.
+.PP
+The command \fBpkgconfig\fR will provide two subcommands, \fBlist\fR
+and \fBget\fR:
+.RS
+.TP
+::\fIpkgName\fR::\fBpkgconfig\fR list
+Returns a list containing the names of all defined keys.
+.TP
+::\fIpkgName\fR::\fBpkgconfig\fR get \fIkey\fR
+Returns the configuration value associated with the specified
+\fIkey\fR.
+.RE
+.SH TCL_CONFIG
+.PP
+The \fBTcl_Config\fR structure contains the following fields:
+.PP
+.CS
+typedef struct Tcl_Config {
+    const char* key;
+    const char* value;
+} Tcl_Config;
+.CE
+.\" No cross references yet.
+.\" .SH "SEE ALSO"
+.SH KEYWORDS
+embedding, configuration, binary library
diff --git a/doc/RegExp.3 b/doc/RegExp.3
index d2163f2..0ac091c 100644
--- a/doc/RegExp.3
+++ b/doc/RegExp.3
@@ -16,93 +16,88 @@ Tcl_RegExpMatch, Tcl_RegExpCompile, Tcl_RegExpExec, Tcl_RegExpRange, Tcl_GetRegE
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_RegExpMatchObj\fR(\fIinterp\fR, \fIstrObj\fR, \fIpatObj\fR)
+\fBTcl_RegExpMatchObj\fR(\fIinterp\fR, \fItextObj\fR, \fIpatObj\fR)
 .sp
 int
-\fBTcl_RegExpMatch\fR(\fIinterp\fR, \fIstring\fR, \fIpattern\fR)
+\fBTcl_RegExpMatch\fR(\fIinterp\fR, \fItext\fR, \fIpattern\fR)
 .sp
 Tcl_RegExp
 \fBTcl_RegExpCompile\fR(\fIinterp\fR, \fIpattern\fR)
 .sp
 int
-\fBTcl_RegExpExec\fR(\fIinterp\fR, \fIregexp\fR, \fIstring\fR, \fIstart\fR)
+\fBTcl_RegExpExec\fR(\fIinterp\fR, \fIregexp\fR, \fItext\fR, \fIstart\fR)
 .sp
+void
 \fBTcl_RegExpRange\fR(\fIregexp\fR, \fIindex\fR, \fIstartPtr\fR, \fIendPtr\fR)
-.VS 8.1
 .sp
 Tcl_RegExp
 \fBTcl_GetRegExpFromObj\fR(\fIinterp\fR, \fIpatObj\fR, \fIcflags\fR)
 .sp
 int
-\fBTcl_RegExpExecObj\fR(\fIinterp\fR, \fIregexp\fR, \fIobjPtr\fR, \fIoffset\fR, \fInmatches\fR, \fIeflags\fR)
+\fBTcl_RegExpExecObj\fR(\fIinterp\fR, \fIregexp\fR, \fItextObj\fR, \fIoffset\fR, \fInmatches\fR, \fIeflags\fR)
 .sp
+void
 \fBTcl_RegExpGetInfo\fR(\fIregexp\fR, \fIinfoPtr\fR)
-.VE 8.1
-
+.fi
 .SH ARGUMENTS
-.AS Tcl_Interp *interp
+.AS Tcl_RegExpInfo *interp in/out
 .AP Tcl_Interp *interp in
 Tcl interpreter to use for error reporting.  The interpreter may be
 NULL if no error reporting is desired.
-.VS 8.1
-.AP Tcl_Obj *strObj in/out
-Refers to the object from which to get the string to search.  The
+.AP Tcl_Obj *textObj in/out
+Refers to the object from which to get the text to search.  The
 internal representation of the object may be converted to a form that
 can be efficiently searched.
 .AP Tcl_Obj *patObj in/out
 Refers to the object from which to get a regular expression. The
 compiled regular expression is cached in the object.
-.VE 8.1
-.AP char *string in
-String to check for a match with a regular expression.
-.AP "CONST char" *pattern in
+.AP char *text in
+Text to search for a match with a regular expression.
+.AP "const char" *pattern in
 String in the form of a regular expression pattern.
 .AP Tcl_RegExp regexp in
 Compiled regular expression.  Must have been returned previously
 by \fBTcl_GetRegExpFromObj\fR or \fBTcl_RegExpCompile\fR.
 .AP char *start in
-If \fIstring\fR is just a portion of some other string, this argument
+If \fItext\fR is just a portion of some other string, this argument
 identifies the beginning of the larger string.
-If it isn't the same as \fIstring\fR, then no \fB^\fR matches
-will be allowed.
+If it is not the same as \fItext\fR, then no
+.QW \fB^\fR
+matches will be allowed.
 .AP int index in
 Specifies which range is desired:  0 means the range of the entire
 match, 1 or greater means the range that matched a parenthesized
 sub-expression.
-.VS 8.4
-.AP "CONST char" **startPtr out
+.AP "const char" **startPtr out
 The address of the first character in the range is stored here, or
 NULL if there is no such range.
-.AP "CONST char" **endPtr out
+.AP "const char" **endPtr out
 The address of the character just after the last one in the range
 is stored here, or NULL if there is no such range.
-.VE 8.4
-.VS 8.1
 .AP int cflags in
-OR-ed combination of compilation flags. See below for more information.
-.AP Tcl_Obj *objPtr in/out
-An object which contains the string to check for a match with a
-regular expression.
+OR-ed combination of the compilation flags \fBTCL_REG_ADVANCED\fR,
+\fBTCL_REG_EXTENDED\fR, \fBTCL_REG_BASIC\fR, \fBTCL_REG_EXPANDED\fR,
+\fBTCL_REG_QUOTE\fR, \fBTCL_REG_NOCASE\fR, \fBTCL_REG_NEWLINE\fR,
+\fBTCL_REG_NLSTOP\fR, \fBTCL_REG_NLANCH\fR, \fBTCL_REG_NOSUB\fR, and
+\fBTCL_REG_CANMATCH\fR. See below for more information.
 .AP int offset in
-The character offset into the string where matching should begin.
+The character offset into the text where matching should begin.
 The value of the offset has no impact on \fB^\fR matches.  This
 behavior is controlled by \fIeflags\fR.
 .AP int nmatches in
 The number of matching subexpressions that should be remembered for
 later use.  If this value is 0, then no subexpression match
-information will be computed.  If the value is -1, then
+information will be computed.  If the value is \-1, then
 all of the matching subexpressions will be remembered.  Any other
 value will be taken as the maximum number of subexpressions to
 remember.
 .AP int eflags in
-OR-ed combination of the values TCL_REG_NOTBOL and TCL_REG_NOTEOL.
-See below for more information.
+OR-ed combination of the execution flags \fBTCL_REG_NOTBOL\fR and
+\fBTCL_REG_NOTEOL\fR. See below for more information.
 .AP Tcl_RegExpInfo *infoPtr out
 The address of the location where information about a previous match
 should be stored by \fBTcl_RegExpGetInfo\fR.
-.VE 8.1
 .BE
-
 .SH DESCRIPTION
 .PP
 \fBTcl_RegExpMatch\fR determines whether its \fIpattern\fR argument
@@ -114,13 +109,11 @@ If there is no match then \fBTcl_RegExpMatch\fR returns 0.
 If an error occurs in the matching process (e.g. \fIpattern\fR
 is not a valid regular expression) then \fBTcl_RegExpMatch\fR
 returns \-1 and leaves an error message in the interpreter result.
-.VS 8.1.2
 \fBTcl_RegExpMatchObj\fR is similar to \fBTcl_RegExpMatch\fR except it
-operates on the Tcl objects \fIstrObj\fR and \fIpatObj\fR instead of
+operates on the Tcl objects \fItextObj\fR and \fIpatObj\fR instead of
 UTF strings. 
 \fBTcl_RegExpMatchObj\fR is generally more efficient than
 \fBTcl_RegExpMatch\fR, so it is the preferred interface.
-.VE 8.1.2
 .PP
 \fBTcl_RegExpCompile\fR, \fBTcl_RegExpExec\fR, and \fBTcl_RegExpRange\fR
 provide lower-level access to the regular expression pattern matcher.
@@ -136,7 +129,7 @@ up to the next call to \fBTcl_RegExpCompile\fR;  it is not safe to
 retain these values for long periods of time.
 .PP
 \fBTcl_RegExpExec\fR executes the regular expression pattern matcher.
-It returns 1 if \fIstring\fR contains a range of characters that
+It returns 1 if \fItext\fR contains a range of characters that
 match \fIregexp\fR, 0 if no match is found, and
 \-1 if an error occurs.
 In the case of an error, \fBTcl_RegExpExec\fR leaves an error
@@ -145,14 +138,16 @@ When searching a string for multiple matches of a pattern,
 it is important to distinguish between the start of the original
 string and the start of the current search.
 For example, when searching for the second occurrence of a
-match, the \fIstring\fR argument might point to the character
+match, the \fItext\fR argument might point to the character
 just after the first match;  however, it is important for the
 pattern matcher to know that this is not the start of the entire string,
-so that it doesn't allow \fB^\fR atoms in the pattern to match.
+so that it does not allow
+.QW \fB^\fR
+atoms in the pattern to match.
 The \fIstart\fR argument provides this information by pointing
-to the start of the overall string containing \fIstring\fR.
-\fIStart\fR will be less than or equal to \fIstring\fR;  if it
-is less than \fIstring\fR then no \fB^\fR matches will be allowed.
+to the start of the overall string containing \fItext\fR.
+\fIStart\fR will be less than or equal to \fItext\fR;  if it
+is less than \fItext\fR then no \fB^\fR matches will be allowed.
 .PP
 \fBTcl_RegExpRange\fR may be invoked after \fBTcl_RegExpExec\fR
 returns;  it provides detailed information about what ranges of
@@ -168,7 +163,6 @@ information is returned about the range of characters that matched the
 If there is no range corresponding to \fIindex\fR then NULL
 is stored in \fI*startPtr\fR and \fI*endPtr\fR.
 .PP
-.VS 8.1
 \fBTcl_GetRegExpFromObj\fR, \fBTcl_RegExpExecObj\fR, and
 \fBTcl_RegExpGetInfo\fR are object interfaces that provide the most
 direct control of Henry Spencer's regular expression library.  For
@@ -190,23 +184,29 @@ occurs while compiling the regular expression then
 \fBTcl_GetRegExpFromObj\fR returns NULL and leaves an error message in
 the interpreter result.  The regular expression token can be used as
 long as the internal representation of \fIpatObj\fR refers to the
-compiled form.  The \fIeflags\fR argument is a bitwise OR of
+compiled form.  The \fIcflags\fR argument is a bit-wise OR of
 zero or more of the following flags that control the compilation of
 \fIpatObj\fR:
 .RS 2
 .TP
 \fBTCL_REG_ADVANCED\fR
-Compile advanced regular expressions (`AREs').  This mode corresponds to
-the normal regular expression syntax accepted by the Tcl regexp and
-regsub commands.
+Compile advanced regular expressions
+.PQ ARE s .
+This mode corresponds to
+the normal regular expression syntax accepted by the Tcl \fBregexp\fR and
+\fBregsub\fR commands.
 .TP
 \fBTCL_REG_EXTENDED\fR
-Compile extended regular expressions (`EREs').  This mode corresponds
+Compile extended regular expressions
+.PQ ERE s .
+This mode corresponds
 to the regular expression syntax recognized by Tcl 8.0 and earlier
 versions. 
 .TP
 \fBTCL_REG_BASIC\fR
-Compile basic regular expressions (`BREs').  This mode corresponds
+Compile basic regular expressions
+.PQ BRE s .
+This mode corresponds
 to the regular expression syntax recognized by common Unix utilities
 like \fBsed\fR and \fBgrep\fR.  This is the default if no flags are
 specified.
@@ -226,26 +226,54 @@ Compile for matching that ignores upper/lower case distinctions.
 \fBTCL_REG_NEWLINE\fR
 Compile for newline-sensitive matching.  By default, newline is a
 completely ordinary character with no special meaning in either
-regular expressions or strings.  With this flag, `[^' bracket
-expressions and `.' never match newline, `^' matches an empty string
-after any newline in addition to its normal function, and `$' matches
+regular expressions or strings.  With this flag,
+.QW [^
+bracket expressions and
+.QW .
+never match newline,
+.QW ^
+matches an empty string
+after any newline in addition to its normal function, and
+.QW $
+matches
 an empty string before any newline in addition to its normal function.
-\fBREG_NEWLINE\fR is the bitwise OR of \fBREG_NLSTOP\fR and
+\fBREG_NEWLINE\fR is the bit-wise OR of \fBREG_NLSTOP\fR and
 \fBREG_NLANCH\fR.
 .TP
 \fBTCL_REG_NLSTOP\fR
 Compile for partial newline-sensitive matching,
 with the behavior of
-`[^' bracket expressions and `.' affected,
-but not the behavior of `^' and `$'.  In this mode, `[^' bracket
-expressions and `.' never match newline.
+.QW [^
+bracket expressions and
+.QW .
+affected, but not the behavior of
+.QW ^
+and
+.QW $ .
+In this mode,
+.QW [^
+bracket expressions and
+.QW .
+never match newline.
 .TP
 \fBTCL_REG_NLANCH\fR
 Compile for inverse partial newline-sensitive matching,
 with the behavior of
-of `^' and `$' (the ``anchors'') affected, but not the behavior of
-`[^' bracket expressions and `.'.  In this mode `^' matches an empty string
-after any newline in addition to its normal function, and `$' matches
+.QW ^
+and
+.QW $
+(the
+.QW anchors )
+affected, but not the behavior of
+.QW [^
+bracket expressions and
+.QW . .
+In this mode
+.QW ^
+matches an empty string
+after any newline in addition to its normal function, and
+.QW $
+matches
 an empty string before any newline in addition to its normal function.
 .TP
 \fBTCL_REG_NOSUB\fR
@@ -273,25 +301,33 @@ error message in the interpreter result.  The \fInmatches\fR value
 indicates to the matcher how many subexpressions are of interest.  If
 \fInmatches\fR is 0, then no subexpression match information is
 recorded, which may allow the matcher to make various optimizations.
-If the value is -1, then all of the subexpressions in the pattern are
+If the value is \-1, then all of the subexpressions in the pattern are
 remembered.  If the value is a positive integer, then only that number
 of subexpressions will be remembered.  Matching begins at the
 specified Unicode character index given by \fIoffset\fR.  Unlike
 \fBTcl_RegExpExec\fR, the behavior of anchors is not affected by the
 offset value.  Instead the behavior of the anchors is explicitly
-controlled by the \fIeflags\fR argument, which is a bitwise OR of
+controlled by the \fIeflags\fR argument, which is a bit-wise OR of
 zero or more of the following flags:
 .RS 2
 .TP
 \fBTCL_REG_NOTBOL\fR
 The starting character will not be treated as the beginning of a
-line or the beginning of the string, so `^' will not match there.
-Note that this flag has no effect on how `\fB\eA\fR' matches.
+line or the beginning of the string, so
+.QW ^
+will not match there.
+Note that this flag has no effect on how
+.QW \fB\eA\fR
+matches.
 .TP
 \fBTCL_REG_NOTEOL\fR
 The last character in the string will not be treated as the end of a
-line or the end of the string, so '$' will not match there.
-Note that this flag has no effect on how `\fB\eZ\fR' matches.
+line or the end of the string, so
+.QW $
+will not match there.
+Note that this flag has no effect on how
+.QW \fB\eZ\fR
+matches.
 .RE
 .PP
 \fBTcl_RegExpGetInfo\fR retrieves information about the last match
@@ -301,16 +337,16 @@ defined as follows:
 .PP
 .CS
 typedef struct Tcl_RegExpInfo {
-	int \fInsubs\fR;
-	Tcl_RegExpIndices *\fImatches\fR;
-	long \fIextendStart\fR;
+        int \fInsubs\fR;
+        Tcl_RegExpIndices *\fImatches\fR;
+        long \fIextendStart\fR;
 } Tcl_RegExpInfo;
 .CE
 .PP
 The \fInsubs\fR field contains a count of the number of parenthesized
 subexpressions within the regular expression.  If the \fBTCL_REG_NOSUB\fR
 was used, then this value will be zero.  The \fImatches\fR field
-points to an array of \fInsubs\fR values that indicate the bounds of each
+points to an array of \fInsubs\fR+1 values that indicate the bounds of each
 subexpression matched.  The first element in the array refers to the
 range matched by the entire regular expression, and subsequent elements
 refer to the parenthesized subexpressions in the order that they
@@ -319,8 +355,8 @@ follows:
 .PP
 .CS
 typedef struct Tcl_RegExpIndices {
-	long \fIstart\fR;
-	long \fIend\fR;
+        long \fIstart\fR;
+        long \fIend\fR;
 } Tcl_RegExpIndices;
 .CE
 .PP
@@ -331,7 +367,7 @@ subexpression.  The \fIend\fR index identifies the first character
 after the matched subexpression.  If the subexpression matched the
 empty string, then \fIstart\fR and \fIend\fR will be equal.  If the
 subexpression did not participate in the match, then \fIstart\fR and
-\fIend\fR will be set to -1.
+\fIend\fR will be set to \-1.
 .PP
 The \fIextendStart\fR field in \fBTcl_RegExpInfo\fR is only set if the
 \fBTCL_REG_CANMATCH\fR flag was used.  It indicates the first
@@ -340,8 +376,7 @@ found, this will be the same as the beginning of the current match.
 If no match was found, then it indicates the earliest point at which a
 match might occur if additional text is appended to the string.  If it
 is no match is possible even with further text, this field will be set 
-to -1.
-.VE 8.1
+to \-1.
 .SH "SEE ALSO"
 re_syntax(n)
 .SH KEYWORDS
diff --git a/doc/SaveResult.3 b/doc/SaveResult.3
index 8eb9b46..f47500e 100644
--- a/doc/SaveResult.3
+++ b/doc/SaveResult.3
@@ -1,5 +1,6 @@
 '\"
 '\" Copyright (c) 1997 by Sun Microsystems, Inc.
+'\" Contributions from Don Porter, NIST, 2004. (not subject to US copyright)
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -8,35 +9,95 @@
 .TH Tcl_SaveResult 3 8.1 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_SaveResult, Tcl_RestoreResult, Tcl_DiscardResult \- save and restore an interpreter's result
+Tcl_SaveInterpState, Tcl_RestoreInterpState, Tcl_DiscardInterpState, Tcl_SaveResult, Tcl_RestoreResult, Tcl_DiscardResult \- save and restore an interpreter's state
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
 .sp
-\fBTcl_SaveResult(\fIinterp, statePtr\fB)\fR
+Tcl_InterpState
+\fBTcl_SaveInterpState\fR(\fIinterp, status\fR)
 .sp
-\fBTcl_RestoreResult(\fIinterp, statePtr\fB)\fR
+int
+\fBTcl_RestoreInterpState\fR(\fIinterp, state\fR)
 .sp
-\fBTcl_DiscardResult(\fIstatePtr\fB)\fR
+\fBTcl_DiscardInterpState\fR(\fIstate\fR)
+.sp
+\fBTcl_SaveResult\fR(\fIinterp, savedPtr\fR)
+.sp
+\fBTcl_RestoreResult\fR(\fIinterp, savedPtr\fR)
+.sp
+\fBTcl_DiscardResult\fR(\fIsavedPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_SavedResult statePtr
+.AS Tcl_InterpState savedPtr
 .AP Tcl_Interp *interp in
 Interpreter for which state should be saved.
-.AP Tcl_SavedResult *statePtr in
+.AP int status in
+Return code value to save as part of interpreter state.
+.AP Tcl_InterpState state in
+Saved state token to be restored or discarded.
+.AP Tcl_SavedResult *savedPtr in
 Pointer to location where interpreter result should be saved or restored.
 .BE
 
 .SH DESCRIPTION
 .PP
+.VS 8.5
 These routines allows a C procedure to take a snapshot of the current
-interpreter result so that it can be restored after a call
+state of an interpreter so that it can be restored after a call
 to \fBTcl_Eval\fR or some other routine that modifies the interpreter
-result.  These routines are passed a pointer to a structure that is
-used to store enough information to restore the interpreter result
-state.  This structure can be allocated on the stack of the calling
+state.  There are two triplets of routines meant to work together.
+.PP
+The first triplet stores the snapshot of interpreter state in
+an opaque token returned by \fBTcl_SaveInterpState\fR.  That token
+value may then be passed back to one of \fBTcl_RestoreInterpState\fR
+or \fBTcl_DiscardInterpState\fR, depending on whether the interp
+state is to be restored.  So long as one of the latter two routines
+is called, Tcl will take care of memory management.
+.PP
+The second triplet stores the snapshot of only the interpreter
+result (not its complete state) in memory allocated by the caller.
+These routines are passed a pointer to a \fBTcl_SavedResult\fR structure
+that is used to store enough information to restore the interpreter result.
+This structure can be allocated on the stack of the calling
 procedure.  These routines do not save the state of any error
-information in the interpreter (e.g. the \fBerrorCode\fR or
-\fBerrorInfo\fR variables).
+information in the interpreter (e.g. the \fB\-errorcode\fR or
+\fB\-errorinfo\fR return options, when an error is in progress).
+.PP
+Because the routines \fBTcl_SaveInterpState\fR,
+\fBTcl_RestoreInterpState\fR, and \fBTcl_DiscardInterpState\fR perform
+a superset of the functions provided by the other routines,
+any new code should only make use of the more powerful routines.
+The older, weaker routines \fBTcl_SaveResult\fR, \fBTcl_RestoreResult\fR,
+and \fBTcl_DiscardResult\fR continue to exist only for the sake
+of existing programs that may already be using them.  
+.PP
+\fBTcl_SaveInterpState\fR takes a snapshot of those portions of
+interpreter state that make up the full result of script evaluation.
+This include the interpreter result, the return code (passed in
+as the \fIstatus\fR argument, and any return options, including
+\fB\-errorinfo\fR and \fB\-errorcode\fR when an error is in progress.
+This snapshot is returned as an opaque token of type \fBTcl_InterpState\fR.
+The call to \fBTcl_SaveInterpState\fR does not itself change the
+state of the interpreter.  Unlike \fBTcl_SaveResult\fR, it does
+not reset the interpreter.
+.PP
+\fBTcl_RestoreInterpState\fR accepts a \fBTcl_InterpState\fR token
+previously returned by \fBTcl_SaveInterpState\fR and restores the
+state of the interp to the state held in that snapshot.  The return
+value of \fBTcl_RestoreInterpState\fR is the status value originally
+passed to \fBTcl_SaveInterpState\fR when the snapshot token was
+created.
+.PP
+\fBTcl_DiscardInterpState\fR is called to release a \fBTcl_InterpState\fR
+token previously returned by \fBTcl_SaveInterpState\fR when that
+snapshot is not to be restored to an interp.
+.PP
+The \fBTcl_InterpState\fR token returned by \fBTcl_SaveInterpState\fR
+must eventually be passed to either \fBTcl_RestoreInterpState\fR
+or \fBTcl_DiscardInterpState\fR to avoid a memory leak.  Once
+the \fBTcl_InterpState\fR token is passed to one of them, the
+token is no longer valid and should not be used anymore.
+.VE 8.5
 .PP
 \fBTcl_SaveResult\fR moves the string and object results
 of \fIinterp\fR into the location specified by \fIstatePtr\fR.
diff --git a/doc/SetChanErr.3 b/doc/SetChanErr.3
new file mode 100644
index 0000000..13bd94a
--- /dev/null
+++ b/doc/SetChanErr.3
@@ -0,0 +1,153 @@
+'\"
+'\" Copyright (c) 2005 Andreas Kupries <andreas_kupries@users.sourceforge.net>
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.so man.macros
+.TH Tcl_SetChannelError 3 8.5 Tcl "Tcl Library Procedures"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+Tcl_SetChannelError, Tcl_SetChannelErrorInterp, Tcl_GetChannelError, Tcl_GetChannelErrorInterp \- functions to create/intercept Tcl errors by channel drivers.
+.SH SYNOPSIS
+.nf
+\fB#include <tcl.h>\fR
+.sp
+void
+\fBTcl_SetChannelError\fR(\fIchan, msg\fR)
+.sp
+void
+\fBTcl_SetChannelErrorInterp\fR(\fIinterp, msg\fR)
+.sp
+void
+\fBTcl_GetChannelError\fR(\fIchan, msgPtr\fR)
+.sp
+void
+\fBTcl_GetChannelErrorInterp\fR(\fIinterp, msgPtr\fR)
+.sp
+.SH ARGUMENTS
+.AS Tcl_Channel chan
+.AP Tcl_Channel chan in
+Refers to the Tcl channel whose bypass area is accessed.
+.AP Tcl_Interp* interp in
+Refers to the Tcl interpreter whose bypass area is accessed.
+.AP Tcl_Obj* msg in
+Error message put into a bypass area.  A list of return options and
+values, followed by a string message.  Both message and the
+option/value information are optional.
+.AP Tcl_Obj** msgPtr out
+Reference to a place where the message stored in the accessed bypass
+area can be stored in.
+.BE
+.SH DESCRIPTION
+.PP
+The current definition of a Tcl channel driver does not permit the
+direct return of arbitrary error messages, except for the setting and
+retrieval of channel options. All other functions are restricted to
+POSIX error codes.
+.PP
+The functions described here overcome this limitation. Channel drivers
+are allowed to use \fBTcl_SetChannelError\fR and
+\fBTcl_SetChannelErrorInterp\fR to place arbitrary error messages in
+\fBbypass areas\fI defined for channels and interpreters. And the
+generic I/O layer uses \fBTcl_GetChannelError\fR and
+\fBTcl_GetChannelErrorInterp\fR to look for messages in the bypass
+areas and arrange for their return as errors. The posix error codes
+set by a driver are used now if and only if no messages are present.
+.PP
+\fBTcl_SetChannelError\fR stores error information in the bypass area
+of the specified channel. The number of references to the \fBmsg\fR
+object goes up by one. Previously stored information will be
+discarded, by releasing the reference held by the channel. The channel
+reference must not be NULL.
+.PP
+\fBTcl_SetChannelErrorInterp\fR stores error information in the bypass
+area of the specified interpreter. The number of references to the
+\fBmsg\fR object goes up by one. Previously stored information will be
+discarded, by releasing the reference held by the interpreter. The
+interpreter reference must not be NULL.
+.PP
+\fBTcl_GetChannelError\fR places either the error message held in the
+bypass area of the specified channel into \fImsgPtr\fR, or NULL; and
+resets the bypass. I.e. after an invocation all following invocations
+will return NULL, until an intervening invocation of
+\fBTcl_SetChannelError\fR with a non-NULL message. The \fImsgPtr\fR
+must not be NULL. The reference count of the message is not touched.
+The reference previously held by the channel is now held by the caller
+of the function and it is its responsibility to release that reference
+when it is done with the object.
+.PP
+\fBTcl_GetChannelErrorInterp\fR places either the error message held
+in the bypass area of the specified interpreter into \fImsgPtr\fR, or
+NULL; and resets the bypass. I.e. after an invocation all following
+invocations will return NULL, until an intervening invocation of
+\fBTcl_SetChannelErrorInterp\fR with a non-NULL message. The
+\fImsgPtr\fR must not be NULL. The reference count of the message is
+not touched.  The reference previously held by the interpreter is now
+held by the caller of the function and it is its responsibility to
+release that reference when it is done with the object.
+.PP
+Which functions of a channel driver are allowed to use which bypass
+function is listed below, as is which functions of the public channel
+API may leave a messages in the bypass areas.
+.PP
+.IP \fBTcl_DriverCloseProc\fR
+May use \fBTcl_SetChannelErrorInterp\fR, and only this function.
+.IP \fBTcl_DriverInputProc\fR
+May use \fBTcl_SetChannelError\fR, and only this function.
+.IP \fBTcl_DriverOutputProc\fR
+May use \fBTcl_SetChannelError\fR, and only this function.
+.IP \fBTcl_DriverSeekProc\fR
+May use \fBTcl_SetChannelError\fR, and only this function.
+.IP \fBTcl_DriverWideSeekProc\fR
+May use \fBTcl_SetChannelError\fR, and only this function.
+.IP \fBTcl_DriverSetOptionProc\fR
+Has already the ability to pass arbitrary error messages. Must
+\fBnot\fR use any of the new functions.
+.IP \fBTcl_DriverGetOptionProc\fR
+Has already the ability to pass arbitrary error messages. Must
+\fBnot\fR use any of the new functions.
+.IP \fBTcl_DriverWatchProc\fR
+Must \fBnot\fR use any of the new functions. Is internally called and
+has no ability to return any type of error whatsoever.
+.IP \fBTcl_DriverBlockModeProc\fR
+May use \fBTcl_SetChannelError\fR, and only this function.
+.IP \fBTcl_DriverGetHandleProc\fR
+Must \fBnot\fR use any of the new functions. It is only a low-level
+function, and not used by Tcl commands.
+.IP \fBTcl_DriverHandlerProc\fR
+Must \fBnot\fR use any of the new functions. Is internally called and
+has no ability to return any type of error whatsoever.
+.PP
+Given the information above the following public functions of the Tcl
+C API are affected by these changes. I.e. when these functions are
+called the channel may now contain a stored arbitrary error message
+requiring processing by the caller.
+.PP
+.IP \fBTcl_StackChannel\fR
+.IP \fBTcl_Seek\fR
+.IP \fBTcl_Tell\fR
+.IP \fBTcl_ReadRaw\fR
+.IP \fBTcl_Read\fR
+.IP \fBTcl_ReadChars\fR
+.IP \fBTcl_Gets\fR
+.IP \fBTcl_GetsObj\fR
+.IP \fBTcl_Flush\fR
+.IP \fBTcl_WriteRaw\fR
+.IP \fBTcl_WriteObj\fR
+.IP \fBTcl_Write\fR
+.IP \fBTcl_WriteChars\fR
+.PP
+All other API functions are unchanged. Especially the functions below
+leave all their error information in the interpreter result.
+.PP
+.IP \fBTcl_Close\fR
+.IP \fBTcl_UnregisterChannel\fR
+.IP \fBTcl_UnstackChannel\fR
+
+.SH "SEE ALSO"
+Tcl_Close(3), Tcl_OpenFileChannel(3), Tcl_SetErrno(3)
+
+.SH KEYWORDS
+channel driver, error messages, channel type
diff --git a/doc/SetErrno.3 b/doc/SetErrno.3
index f29345a..1735952 100644
--- a/doc/SetErrno.3
+++ b/doc/SetErrno.3
@@ -19,14 +19,14 @@ void
 int
 \fBTcl_GetErrno\fR()
 .sp
-CONST char *
+const char *
 \fBTcl_ErrnoId\fR()
 .sp
-CONST char *
+const char *
 \fBTcl_ErrnoMsg\fR(\fIerrorCode\fR)
 .sp
 .SH ARGUMENTS
-.AS int errorCode in
+.AS int errorCode
 .AP int errorCode in
 A POSIX error code such as \fBENOENT\fR.
 .BE
@@ -52,9 +52,11 @@ instead of accessing \fBerrno\fR directly.
 \fBTcl_ErrnoId\fR and \fBTcl_ErrnoMsg\fR return string
 representations of \fBerrno\fR values.  \fBTcl_ErrnoId\fR
 returns a machine-readable textual identifier such as
-"EACCES" that corresponds to the current value of \fBerrno\fR.
+.QW EACCES
+that corresponds to the current value of \fBerrno\fR.
 \fBTcl_ErrnoMsg\fR returns a human-readable string such as
-"permission denied" that corresponds to the value of its
+.QW "permission denied"
+that corresponds to the value of its
 \fIerrorCode\fR argument.  The \fIerrorCode\fR argument is
 typically the value returned by \fBTcl_GetErrno\fR.
 The strings returned by these functions are
diff --git a/doc/SetResult.3 b/doc/SetResult.3
index 9844251..2245794 100644
--- a/doc/SetResult.3
+++ b/doc/SetResult.3
@@ -19,38 +19,40 @@ Tcl_SetObjResult, Tcl_GetObjResult, Tcl_SetResult, Tcl_GetStringResult, Tcl_Appe
 Tcl_Obj *
 \fBTcl_GetObjResult\fR(\fIinterp\fR)
 .sp
-\fBTcl_SetResult\fR(\fIinterp, string, freeProc\fR)
+\fBTcl_SetResult\fR(\fIinterp, result, freeProc\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_GetStringResult\fR(\fIinterp\fR)
 .sp
-\fBTcl_AppendResult\fR(\fIinterp, string, string, ... , \fB(char *) NULL\fR)
+\fBTcl_AppendResult\fR(\fIinterp, result, result, ... , \fB(char *) NULL\fR)
 .sp
 \fBTcl_AppendResultVA\fR(\fIinterp, argList\fR)
 .sp
-\fBTcl_AppendElement\fR(\fIinterp, string\fR)
+\fBTcl_AppendElement\fR(\fIinterp, element\fR)
 .sp
 \fBTcl_ResetResult\fR(\fIinterp\fR)
 .sp
 \fBTcl_FreeResult\fR(\fIinterp\fR)
 .SH ARGUMENTS
-.AS Tcl_FreeProc freeProc
+.AS Tcl_FreeProc freeProc out
 .AP Tcl_Interp *interp out
 Interpreter whose result is to be modified or read.
 .AP Tcl_Obj *objPtr in
 Object value to become result for \fIinterp\fR.
-.AP char *string in
+.AP char *result in
 String value to become result for \fIinterp\fR or to be
 appended to the existing result.
+.AP char *element in
+String value to append as a list element
+to the existing result of \fIinterp\fR.
 .AP Tcl_FreeProc *freeProc in
 Address of procedure to call to release storage at
-\fIstring\fR, or \fBTCL_STATIC\fR, \fBTCL_DYNAMIC\fR, or
+\fIresult\fR, or \fBTCL_STATIC\fR, \fBTCL_DYNAMIC\fR, or
 \fBTCL_VOLATILE\fR.
 .AP va_list argList in
-An argument list which must have been initialised using
-\fBTCL_VARARGS_START\fR, and cleared using \fBva_end\fR.
+An argument list which must have been initialized using
+\fBva_start\fR, and cleared using \fBva_end\fR.
 .BE
-
 .SH DESCRIPTION
 .PP
 The procedures described here are utilities for manipulating the
@@ -82,20 +84,20 @@ references to it remain.
 The object's reference count is not incremented;
 if the caller needs to retain a long-term pointer to the object
 they should use \fBTcl_IncrRefCount\fR to increment its reference count
-in order to keep it from being freed too early or accidently changed.
+in order to keep it from being freed too early or accidentally changed.
 .PP
 \fBTcl_SetResult\fR
-arranges for \fIstring\fR to be the result for the current Tcl
+arranges for \fIresult\fR to be the result for the current Tcl
 command in \fIinterp\fR, replacing any existing result.
 The \fIfreeProc\fR argument specifies how to manage the storage
-for the \fIstring\fR argument;
+for the \fIresult\fR argument;
 it is discussed in the section
 \fBTHE TCL_FREEPROC ARGUMENT TO TCL_SETRESULT\fR below.
-If \fIstring\fR is \fBNULL\fR, then \fIfreeProc\fR is ignored
+If \fIresult\fR is \fBNULL\fR, then \fIfreeProc\fR is ignored
 and \fBTcl_SetResult\fR
 re-initializes \fIinterp\fR's result to point to an empty string.
 .PP
-\fBTcl_GetStringResult\fR returns the result for \fIinterp\fR as an string.
+\fBTcl_GetStringResult\fR returns the result for \fIinterp\fR as a string.
 If the result was set to an object by a \fBTcl_SetObjResult\fR call,
 the object form will be converted to a string and returned.
 If the object's string representation contains null bytes,
@@ -114,60 +116,62 @@ and the result is left as a empty string.
 \fBTcl_ResetResult\fR also clears the error state managed by
 \fBTcl_AddErrorInfo\fR, \fBTcl_AddObjErrorInfo\fR,
 and \fBTcl_SetErrorCode\fR.
-
-.SH "OLD STRING PROCEDURES"
-.PP
-Use of the following procedures is deprecated
-since they manipulate the Tcl result as a string.
-Procedures such as \fBTcl_SetObjResult\fR
-that manipulate the result as an object
-can be significantly more efficient.
 .PP
 \fBTcl_AppendResult\fR makes it easy to build up Tcl results in pieces.
-It takes each of its \fIstring\fR arguments and appends them in order
+It takes each of its \fIresult\fR arguments and appends them in order
 to the current result associated with \fIinterp\fR.
 If the result is in its initialized empty state (e.g. a command procedure
 was just invoked or \fBTcl_ResetResult\fR was just called),
 then \fBTcl_AppendResult\fR sets the result to the concatenation of
-its \fIstring\fR arguments.
+its \fIresult\fR arguments.
 \fBTcl_AppendResult\fR may be called repeatedly as additional pieces
 of the result are produced.
 \fBTcl_AppendResult\fR takes care of all the
 storage management issues associated with managing \fIinterp\fR's
 result, such as allocating a larger result area if necessary.
-It also converts the current interpreter result from an object
-to a string, if necessary, before appending the argument strings.
-Any number of \fIstring\fR arguments may be passed in a single
+It also manages conversion to and from the \fIresult\fR field of the
+\fIinterp\fR so as to handle backward-compatibility with old-style
+extensions.
+Any number of \fIresult\fR arguments may be passed in a single
 call; the last argument in the list must be a NULL pointer.
 .PP
 \fBTcl_AppendResultVA\fR is the same as \fBTcl_AppendResult\fR except that
 instead of taking a variable number of arguments it takes an argument list.
+.SH "OLD STRING PROCEDURES"
+.PP
+Use of the following procedures (is deprecated
+since they manipulate the Tcl result as a string.
+Procedures such as \fBTcl_SetObjResult\fR
+that manipulate the result as an object
+can be significantly more efficient.
 .PP
 \fBTcl_AppendElement\fR is similar to \fBTcl_AppendResult\fR in
 that it allows results to be built up in pieces.
-However, \fBTcl_AppendElement\fR takes only a single \fIstring\fR
+However, \fBTcl_AppendElement\fR takes only a single \fIelement\fR
 argument and it appends that argument to the current result
 as a proper Tcl list element.
 \fBTcl_AppendElement\fR adds backslashes or braces if necessary
 to ensure that \fIinterp\fR's result can be parsed as a list and that
-\fIstring\fR will be extracted as a single element.
+\fIelement\fR will be extracted as a single element.
 Under normal conditions, \fBTcl_AppendElement\fR will add a space
 character to \fIinterp\fR's result just before adding the new
 list element, so that the list elements in the result are properly
 separated.
 However if the new list element is the first in a list or sub-list
 (i.e. \fIinterp\fR's current result is empty, or consists of the
-single character ``{'', or ends in the characters `` {'') then no
-space is added.
+single character
+.QW { ,
+or ends in the characters
+.QW " {" )
+then no space is added.
 .PP
 \fBTcl_FreeResult\fR performs part of the work
 of \fBTcl_ResetResult\fR.
 It frees up the memory associated with \fIinterp\fR's result.
-It also sets \fIinterp->freeProc\fR to zero, but doesn't
+It also sets \fIinterp->freeProc\fR to zero, but does not
 change \fIinterp->result\fR or clear error state.
 \fBTcl_FreeResult\fR is most commonly used when a procedure
 is about to replace one result value with another.
-
 .SH "DIRECT ACCESS TO INTERP->RESULT IS DEPRECATED"
 .PP
 It used to be legal for programs to
@@ -178,32 +182,31 @@ because it can make the result's string and object forms inconsistent.
 Programs should always read the result
 using the procedures \fBTcl_GetObjResult\fR or \fBTcl_GetStringResult\fR,
 and write the result using \fBTcl_SetObjResult\fR or \fBTcl_SetResult\fR.
-
 .SH "THE TCL_FREEPROC ARGUMENT TO TCL_SETRESULT"
 .PP
 \fBTcl_SetResult\fR's \fIfreeProc\fR argument specifies how 
-the Tcl system is to manage the storage for the \fIstring\fR argument.
+the Tcl system is to manage the storage for the \fIresult\fR argument.
 If \fBTcl_SetResult\fR or \fBTcl_SetObjResult\fR are called
 at a time when \fIinterp\fR holds a string result,
 they do whatever is necessary to dispose of the old string result
 (see the \fBTcl_Interp\fR manual entry for details on this).
 .PP
-If \fIfreeProc\fR is \fBTCL_STATIC\fR it means that \fIstring\fR
+If \fIfreeProc\fR is \fBTCL_STATIC\fR it means that \fIresult\fR
 refers to an area of static storage that is guaranteed not to be
 modified until at least the next call to \fBTcl_Eval\fR.
 If \fIfreeProc\fR
-is \fBTCL_DYNAMIC\fR it means that \fIstring\fR was allocated with a call
+is \fBTCL_DYNAMIC\fR it means that \fIresult\fR was allocated with a call
 to \fBTcl_Alloc\fR and is now the property of the Tcl system.
 \fBTcl_SetResult\fR will arrange for the string's storage to be
 released by calling \fBTcl_Free\fR when it is no longer needed.
-If \fIfreeProc\fR is \fBTCL_VOLATILE\fR it means that \fIstring\fR
+If \fIfreeProc\fR is \fBTCL_VOLATILE\fR it means that \fIresult\fR
 points to an area of memory that is likely to be overwritten when
 \fBTcl_SetResult\fR returns (e.g. it points to something in a stack frame).
 In this case \fBTcl_SetResult\fR will make a copy of the string in
 dynamically allocated storage and arrange for the copy to be the
 result for the current Tcl command.
 .PP
-If \fIfreeProc\fR isn't one of the values \fBTCL_STATIC\fR,
+If \fIfreeProc\fR is not one of the values \fBTCL_STATIC\fR,
 \fBTCL_DYNAMIC\fR, and \fBTCL_VOLATILE\fR, then it is the address
 of a procedure that Tcl should call to free the string.
 This allows applications to use non-standard storage allocators.
@@ -214,10 +217,8 @@ result that match the type \fBTcl_FreeProc\fR:
 typedef void Tcl_FreeProc(char *\fIblockPtr\fR);
 .CE
 When \fIfreeProc\fR is called, its \fIblockPtr\fR will be set to
-the value of \fIstring\fR passed to \fBTcl_SetResult\fR.
-
+the value of \fIresult\fR passed to \fBTcl_SetResult\fR.
 .SH "SEE ALSO"
 Tcl_AddErrorInfo, Tcl_CreateObjCommand, Tcl_SetErrorCode, Tcl_Interp
-
 .SH KEYWORDS
 append, command, element, list, object, result, return value, interpreter
diff --git a/doc/SetVar.3 b/doc/SetVar.3
index 9391e3e..ce47a73 100644
--- a/doc/SetVar.3
+++ b/doc/SetVar.3
@@ -14,29 +14,25 @@ Tcl_SetVar2Ex, Tcl_SetVar, Tcl_SetVar2, Tcl_ObjSetVar2, Tcl_GetVar2Ex, Tcl_GetVa
 .nf
 \fB#include <tcl.h>\fR
 .sp
-.VS 8.1
 Tcl_Obj *
 \fBTcl_SetVar2Ex\fR(\fIinterp, name1, name2, newValuePtr, flags\fR)
-.VE
 .sp
-CONST char *
+const char *
 \fBTcl_SetVar\fR(\fIinterp, varName, newValue, flags\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_SetVar2\fR(\fIinterp, name1, name2, newValue, flags\fR)
 .sp
 Tcl_Obj *
 \fBTcl_ObjSetVar2\fR(\fIinterp, part1Ptr, part2Ptr, newValuePtr, flags\fR)
 .sp
-.VS 8.1
 Tcl_Obj *
 \fBTcl_GetVar2Ex\fR(\fIinterp, name1, name2, flags\fR)
-.VE
 .sp
-CONST char *
+const char *
 \fBTcl_GetVar\fR(\fIinterp, varName, flags\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_GetVar2\fR(\fIinterp, name1, name2, flags\fR)
 .sp
 Tcl_Obj *
@@ -51,29 +47,27 @@ int
 .AS Tcl_Interp *newValuePtr
 .AP Tcl_Interp *interp in
 Interpreter containing variable.
-.AP "CONST char" *name1 in
+.AP "const char" *name1 in
 Contains the name of an array variable (if \fIname2\fR is non-NULL)
 or (if \fIname2\fR is NULL) either the name of a scalar variable
 or a complete name including both variable name and index.
 May include \fB::\fR namespace qualifiers
 to specify a variable in a particular namespace.
-.AP "CONST char" *name2 in
+.AP "const char" *name2 in
 If non-NULL, gives name of element within array; in this
 case \fIname1\fR must refer to an array variable.
 .AP Tcl_Obj *newValuePtr in
-.VS 8.1
 Points to a Tcl object containing the new value for the variable.
-.VE
 .AP int flags in
 OR-ed combination of bits providing additional information. See below
 for valid values.
-.AP "CONST char" *varName in
+.AP "const char" *varName in
 Name of variable.
 May include \fB::\fR namespace qualifiers
 to specify a variable in a particular namespace.
 May refer to a scalar variable or an element of
 an array.
-.AP "CONST char" *newValue in
+.AP "const char" *newValue in
 New value for variable, specified as a null-terminated string.
 A copy of this value is stored in the variable.
 .AP Tcl_Obj *part1Ptr in
@@ -91,7 +85,6 @@ within an array and \fIpart1Ptr\fR must refer to an array variable.
 These procedures are used to create, modify, read, and delete
 Tcl variables from C code.
 .PP
-.VS 8.1
 \fBTcl_SetVar2Ex\fR, \fBTcl_SetVar\fR, \fBTcl_SetVar2\fR, and
 \fBTcl_ObjSetVar2\fR 
 will create a new variable or modify an existing one.
@@ -105,14 +98,12 @@ a pointer to a Tcl_Obj.  \fBTcl_SetVar\fR and \fBTcl_SetVar2\fR
 take the new value as a string and return a string; they are
 usually less efficient than \fBTcl_ObjSetVar2\fR.  Note that the
 return value may be different than the \fInewValuePtr\fR or
-.VE
 \fInewValue\fR argument, due to modifications made by write traces.
 If an error occurs in setting the variable (e.g. an array
 variable is referenced without giving an index into the array)
 NULL is returned and an error message is left in \fIinterp\fR's
 result if the \fBTCL_LEAVE_ERR_MSG\fR \fIflag\fR bit is set.
 .PP
-.VS 8.1
 \fBTcl_GetVar2Ex\fR, \fBTcl_GetVar\fR, \fBTcl_GetVar2\fR, and
 \fBTcl_ObjGetVar2\fR
 return the current value of a variable.
@@ -125,9 +116,8 @@ returned as a pointer to a Tcl_Obj.  For \fBTcl_GetVar\fR and
 \fBTcl_GetVar2\fR the value is returned as a string; this is
 usually less efficient, so \fBTcl_GetVar2Ex\fR or \fBTcl_ObjGetVar2\fR
 are preferred.
-.VE
 If an error occurs while reading the variable (e.g. the variable
-doesn't exist or an array element is specified for a scalar
+does not exist or an array element is specified for a scalar
 variable), then NULL is returned and an error message is left
 in \fIinterp\fR's result if the \fBTCL_LEAVE_ERR_MSG\fR \fIflag\fR
 bit is set.
@@ -137,9 +127,9 @@ a variable, so that future attempts to read the variable will return
 an error.
 The arguments to these procedures are treated in the same way
 as the arguments to the procedures above.
-If the variable is successfully removed then TCL_OK is returned.
-If the variable cannot be removed because it doesn't exist then
-TCL_ERROR is returned and an error message is left
+If the variable is successfully removed then \fBTCL_OK\fR is returned.
+If the variable cannot be removed because it does not exist then
+\fBTCL_ERROR\fR is returned and an error message is left
 in \fIinterp\fR's result if the \fBTCL_LEAVE_ERR_MSG\fR \fIflag\fR
 bit is set.
 If an array element is specified, the given element is removed
@@ -158,23 +148,20 @@ close parenthesis, then the value between the parentheses is
 treated as an index (which can have any string value) and
 the characters before the first open
 parenthesis are treated as the name of an array variable.
-If \fIvarName\fR doesn't have parentheses as described above, then
+If \fIvarName\fR does not have parentheses as described above, then
 the entire string is treated as the name of a scalar variable.
 .IP [2]
 If the \fIname1\fR and \fIname2\fR arguments are provided and
 \fIname2\fR is non-NULL, then an array element is specified and
 the array name and index have
 already been separated by the caller: \fIname1\fR contains the
-name and \fIname2\fR contains the index.
-.VS 8.1
-An error is generated
+name and \fIname2\fR contains the index.  An error is generated
 if \fIname1\fR  contains an open parenthesis and ends with a
 close parenthesis (array element) and \fIname2\fR is non-NULL.
 .IP [3]
 If \fIname2\fR is NULL, \fIname1\fR is treated just like
 \fIvarName\fR in case [1] above (it can be either a scalar or an array
 element variable name).
-.VE
 .PP
 The \fIflags\fR argument may be used to specify any of several
 options to the procedures.
@@ -203,7 +190,7 @@ If an error is returned and this bit is set in \fIflags\fR, then
 an error message will be left in the interpreter's result,
 where it can be retrieved with \fBTcl_GetObjResult\fR
 or \fBTcl_GetStringResult\fR.
-If this flag bit isn't set then no error message is left
+If this flag bit is not set then no error message is left
 and the interpreter's result will not be modified.
 .TP
 \fBTCL_APPEND_VALUE\fR
@@ -218,7 +205,10 @@ Tcl list element before setting (or appending to) the variable.
 A separator space is appended before the new list element unless
 the list element is going to be the first element in a list or
 sublist (i.e. the variable's current value is empty, or contains
-the single character ``{'', or ends in `` }'').
+the single character
+.QW { ,
+or ends in
+.QW " }" ).
 When appending, the original value of the variable must also be
 a valid list, so that the operation is the appending of a new
 list element onto a list.
@@ -231,12 +221,12 @@ Under normal circumstances, the return value is a pointer
 to the variable's value (which is stored in Tcl's variable
 structure and will not change before the next call to \fBTcl_SetVar\fR
 or \fBTcl_SetVar2\fR).
-\fBTcl_GetVar\fR and \fBTcl_GetVar2\fR use the flag bits TCL_GLOBAL_ONLY
-and TCL_LEAVE_ERR_MSG, both of
+\fBTcl_GetVar\fR and \fBTcl_GetVar2\fR use the flag bits \fBTCL_GLOBAL_ONLY\fR
+and \fBTCL_LEAVE_ERR_MSG\fR, both of
 which have
 the same meaning as for \fBTcl_SetVar\fR.
 If an error occurs in reading the variable (e.g. the variable
-doesn't exist or an array element is specified for a scalar
+does not exist or an array element is specified for a scalar
 variable), then NULL is returned.
 .PP
 \fBTcl_UnsetVar\fR and \fBTcl_UnsetVar2\fR may be used to remove
@@ -244,9 +234,9 @@ a variable, so that future calls to \fBTcl_GetVar\fR or \fBTcl_GetVar2\fR
 for the variable will return an error.
 The arguments to these procedures are treated in the same way
 as the arguments to \fBTcl_GetVar\fR and \fBTcl_GetVar2\fR.
-If the variable is successfully removed then TCL_OK is returned.
-If the variable cannot be removed because it doesn't exist then
-TCL_ERROR is returned.
+If the variable is successfully removed then \fBTCL_OK\fR is returned.
+If the variable cannot be removed because it does not exist then
+\fBTCL_ERROR\fR is returned.
 If an array element is specified, the given element is removed
 but the array remains.
 If an array name is specified without an index, then the entire
diff --git a/doc/Signal.3 b/doc/Signal.3
index f8eafd0..5b12654 100644
--- a/doc/Signal.3
+++ b/doc/Signal.3
@@ -13,13 +13,14 @@ Tcl_SignalId, Tcl_SignalMsg \- Convert signal codes
 .nf
 \fB#include <tcl.h>\fR
 .sp
-CONST char *
+const char *
 \fBTcl_SignalId\fR(\fIsig\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_SignalMsg\fR(\fIsig\fR)
 .sp
 .SH ARGUMENTS
+.AS int sig
 .AP int sig in
 A POSIX signal number such as \fBSIGPIPE\fR.
 .BE
@@ -29,8 +30,11 @@ A POSIX signal number such as \fBSIGPIPE\fR.
 \fBTcl_SignalId\fR and \fBTcl_SignalMsg\fR return a string
 representation of the provided signal number (\fIsig\fR).
 \fBTcl_SignalId\fR returns a machine-readable textual identifier such
-as "SIGPIPE". \fBTcl_SignalMsg\fR returns a human-readable string such
-as "bus error".  The strings returned by these functions are
+as
+.QW SIGPIPE .
+\fBTcl_SignalMsg\fR returns a human-readable string such as
+.QW "bus error" .
+The strings returned by these functions are
 statically allocated and the caller must not free or modify them.
 
 .SH KEYWORDS
diff --git a/doc/Sleep.3 b/doc/Sleep.3
index 1abd2e6..2423ba1 100644
--- a/doc/Sleep.3
+++ b/doc/Sleep.3
@@ -16,20 +16,19 @@ Tcl_Sleep \- delay execution for a given number of milliseconds
 .sp
 \fBTcl_Sleep\fR(\fIms\fR)
 .SH ARGUMENTS
+.AS int ms
 .AP int ms in
 Number of milliseconds to sleep.
 .BE
-
 .SH DESCRIPTION
 .PP
 This procedure delays the calling process by the number of
 milliseconds given by the \fIms\fR parameter and returns
 after that time has elapsed.  It is typically used for things
 like flashing a button, where the delay is short and the
-application needn't do anything while it waits.  For longer
+application need not do anything while it waits.  For longer
 delays where the application needs to respond to other events
 during the delay, the procedure \fBTcl_CreateTimerHandler\fR
 should be used instead of \fBTcl_Sleep\fR.
-
 .SH KEYWORDS
 sleep, time, wait
diff --git a/doc/SourceRCFile.3 b/doc/SourceRCFile.3
index 5eb5472..eabc47c 100644
--- a/doc/SourceRCFile.3
+++ b/doc/SourceRCFile.3
@@ -14,6 +14,7 @@ Tcl_SourceRCFile \- source the Tcl rc file
 void
 \fBTcl_SourceRCFile\fR(\fIinterp\fR)
 .SH ARGUMENTS
+.AS Tcl_Interp *interp
 .AP Tcl_Interp *interp in
 Tcl interpreter to source rc file into.
 .BE
diff --git a/doc/SplitList.3 b/doc/SplitList.3
index b1a298d..fd6ec8b 100644
--- a/doc/SplitList.3
+++ b/doc/SplitList.3
@@ -32,7 +32,7 @@ int
 int
 \fBTcl_ConvertCountedElement\fR(\fIsrc, length, dst, flags\fR)
 .SH ARGUMENTS
-.AS "CONST char * CONST" ***argvPtr
+.AS "const char *const" ***argvPtr out
 .AP Tcl_Interp *interp out
 Interpreter to use for error reporting.  If NULL, then no error message
 is left.
@@ -40,17 +40,17 @@ is left.
 Pointer to a string with proper list structure.
 .AP int *argcPtr out
 Filled in with number of elements in \fIlist\fR.
-.AP "CONST char" ***argvPtr out
+.AP "const char" ***argvPtr out
 \fI*argvPtr\fR will be filled in with the address of an array of
 pointers to the strings that are the extracted elements of \fIlist\fR.
 There will be \fI*argcPtr\fR valid entries in the array, followed by
 a NULL entry.
 .AP int argc in
 Number of elements in \fIargv\fR.
-.AP "CONST char * CONST" *argv in
+.AP "const char *const" *argv in
 Array of strings to merge together into a single list.
 Each string will become a separate element of the list.
-.AP "CONST char" *src in
+.AP "const char" *src in
 String that is to become an element of a list.
 .AP int *flagsPtr in
 Pointer to word to fill in with information about \fIsrc\fR.
@@ -151,7 +151,7 @@ include spaces between adjacent list elements.
 \fBTcl_ConvertElement\fR uses one of two different approaches to
 handle the special characters in \fIsrc\fR.  Wherever possible, it
 handles special characters by surrounding the string with braces.
-This produces clean-looking output, but can't be used in some situations,
+This produces clean-looking output, but cannot be used in some situations,
 such as when \fIsrc\fR contains unmatched braces.
 In these situations, \fBTcl_ConvertElement\fR handles special
 characters by generating backslash sequences for them.
@@ -164,6 +164,20 @@ used to generate a portion of an argument for a Tcl command.
 In this case, surrounding \fIsrc\fR with curly braces would cause
 the command not to be parsed correctly.
 .PP
+.VS 8.5
+By default, \fBTcl_ConvertElement\fR will use quoting in its output
+to be sure the first character of an element is not the hash
+character
+.PQ # .
+This is to be sure the first element of any list
+passed to \fBeval\fR is not mis-parsed as the beginning of a comment.
+When a list element is not the first element of a list, this quoting
+is not necessary.  When the caller can be sure that the element is
+not the first element of a list, it can disable quoting of the leading
+hash character by OR-ing the flag value returned by \fBTcl_ScanElement\fR
+with \fBTCL_DONT_QUOTE_HASH\fR.
+.VE 8.5
+.PP
 \fBTcl_ScanCountedElement\fR and \fBTcl_ConvertCountedElement\fR are
 the same as \fBTcl_ScanElement\fR and \fBTcl_ConvertElement\fR, except
 the length of string \fIsrc\fR is specified by the \fIlength\fR
diff --git a/doc/SplitPath.3 b/doc/SplitPath.3
index 9bc6acb..6578e3d 100644
--- a/doc/SplitPath.3
+++ b/doc/SplitPath.3
@@ -21,20 +21,20 @@ char *
 Tcl_PathType
 \fBTcl_GetPathType\fR(\fIpath\fR)
 .SH ARGUMENTS
-.AS Tcl_DString ***argvPtr
-.AP "CONST char * CONST" *argvPtr in
+.AS "const char *const" ***argvPtr in/out
+.AP "const char" *path in
 File path in a form appropriate for the current platform (see the
 \fBfilename\fR manual entry for acceptable forms for path names).
 .AP int *argcPtr out
 Filled in with number of path elements in \fIpath\fR.
-.AP "CONST char" ***argvPtr out
+.AP "const char" ***argvPtr out
 \fI*argvPtr\fR will be filled in with the address of an array of
 pointers to the strings that are the extracted elements of \fIpath\fR.
 There will be \fI*argcPtr\fR valid entries in the array, followed by
 a NULL entry.
 .AP int argc in
 Number of elements in \fIargv\fR.
-.AP "CONST char * CONST" *argv in
+.AP "const char *const" *argv in
 Array of path elements to merge together into a single path.
 .AP Tcl_DString *resultPtr in/out
 A pointer to an initialized \fBTcl_DString\fR to which the result of
diff --git a/doc/StaticPkg.3 b/doc/StaticPkg.3
index f4c279c..0dd67d1 100644
--- a/doc/StaticPkg.3
+++ b/doc/StaticPkg.3
@@ -8,7 +8,7 @@
 .TH Tcl_StaticPackage 3 7.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_StaticPackage \- make a statically linked package available via the \fBload\fR command
+Tcl_StaticPackage \- make a statically linked package available via the 'load' command
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -20,8 +20,8 @@ Tcl_StaticPackage \- make a statically linked package available via the \fBload\
 If not NULL, points to an interpreter into which the package has
 already been loaded (i.e., the caller has already invoked the
 appropriate initialization procedure).  NULL means the package
-hasn't yet been incorporated into any interpreter.
-.AP "CONST char" *pkgName in
+has not yet been incorporated into any interpreter.
+.AP "const char" *pkgName in
 Name of the package;  should be properly capitalized (first letter
 upper-case, all others lower-case).
 .AP Tcl_PackageInitProc *initProc in
@@ -30,7 +30,7 @@ interpreter.
 .AP Tcl_PackageInitProc *safeInitProc in
 Procedure to call to incorporate this package into a safe interpreter
 (one that will execute untrusted scripts).   NULL means the package
-can't be used in safe interpreters.
+cannot be used in safe interpreters.
 .BE
 
 .SH DESCRIPTION
diff --git a/doc/StdChannels.3 b/doc/StdChannels.3
index 2a7dd05..b5b020e 100644
--- a/doc/StdChannels.3
+++ b/doc/StdChannels.3
@@ -26,8 +26,7 @@ output and the other for error messages.
 .PP
 Tcl generalizes this concept in a cross-platform way and
 exposes standard channels to the script level.
-
-.SH APIs
+.SS "APPLICATION PROGRAMMING INTERFACES"
 .PP
 The public API procedures dealing directly with standard channels are
 \fBTcl_GetStdChannel\fR and \fBTcl_SetStdChannel\fR. Additional public
@@ -41,17 +40,21 @@ channel information, or when implicitly required during registration
 of a new channel.
 .PP
 These cases differ in how they handle unavailable platform- specific
-standard channels.  (A channel is not ``available'' if it could not be
+standard channels.  (A channel is not
+.QW available
+if it could not be
 successfully opened; for example, in a Tcl application run as a
 Windows NT service.)
 .TP
 1)
 A single standard channel is initialized when it is explicitly
-specified in a call to \fBTcl_SetStdChannel\fR.  The state of the
+specified in a call to \fBTcl_SetStdChannel\fR.  The states of the
 other standard channels are unaffected.
-.sp
+.RS
+.PP
 Missing platform-specific standard channels do not matter here. This
 approach is not available at the script level.
+.RE
 .TP
 2)
 All uninitialized standard channels are initialized to
@@ -67,9 +70,7 @@ when information about any standard channel is requested with a call
 to \fBTcl_GetStdChannel\fR, or with a call to \fBTcl_GetChannel\fR
 which specifies one of the standard names (\fBstdin\fR, \fBstdout\fR
 and \fBstderr\fR).
-.RE
-.sp
-.RS
+.PP
 In case of missing platform-specific standard channels, the Tcl
 standard channels are considered as initialized and then immediately
 closed. This means that the first three Tcl channels then opened by
@@ -80,14 +81,13 @@ the application are designated as the Tcl standard channels.
 All uninitialized standard channels are initialized to
 platform-specific default values when a user-requested channel is
 registered with \fBTcl_RegisterChannel\fR.
-.sp
+.PP
 In case of unavailable platform-specific standard channels the channel
 whose creation caused the initialization of the Tcl standard channels
 is made a normal channel.  The next three Tcl channels opened by the
 application are designated as the Tcl standard channels.  In other
 words, of the first four Tcl channels opened by the application the
 second to fourth are designated as the Tcl standard channels.
-.PP
 .SH "RE-INITIALIZATION OF TCL STANDARD CHANNELS"
 .PP
 Once a Tcl standard channel is initialized through one of the methods
@@ -101,21 +101,20 @@ channel, too. If more than one Tcl standard channel was closed
 that slot was not initialized before. It is this behavior which
 enables an application to employ method 1 of initialization, i.e. to
 create and designate their own Tcl standard channels.
-
-.SH tclsh
+.SH "SHELL-SPECIFIC DETAILS"
+.SS tclsh
 .PP
-The Tcl shell (or rather \fBTcl_Main\fR) uses method 2 to initialize
+The Tcl shell (or rather the function \fBTcl_Main\fR, which forms the
+core of the shell's implementation) uses method 2 to initialize
 the standard channels.
-
-.SH wish
+.SS wish
 .PP
-The windowing shell (or rather \fBTk_MainEx\fR) uses method 1 to
+The windowing shell (or rather the function \fBTk_MainEx\fR, which
+forms the core of the shell's implementation) uses method 1 to
 initialize the standard channels (See \fBTk_InitConsoleChannels\fR)
 on non-Unix platforms.  On Unix platforms, \fBTk_MainEx\fR implicitly
 uses method 2 to initialize the standard channels.
-
 .SH "SEE ALSO"
 Tcl_CreateChannel(3), Tcl_RegisterChannel(3), Tcl_GetChannel(3), Tcl_GetStdChannel(3), Tcl_SetStdChannel(3), Tk_InitConsoleChannels(3), tclsh(1), wish(1), Tcl_Main(3), Tk_MainEx(3)
-
 .SH KEYWORDS
 standard channels
diff --git a/doc/StrMatch.3 b/doc/StrMatch.3
index f490c19..5adaf6e 100644
--- a/doc/StrMatch.3
+++ b/doc/StrMatch.3
@@ -6,7 +6,7 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH Tcl_StringMatch 3 8.1 Tcl "Tcl Library Procedures"
+.TH Tcl_StringMatch 3 8.5 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
 Tcl_StringMatch, Tcl_StringCaseMatch \- test whether a string matches a pattern
@@ -15,19 +15,20 @@ Tcl_StringMatch, Tcl_StringCaseMatch \- test whether a string matches a pattern
 \fB#include <tcl.h>\fR
 .sp
 int
-\fBTcl_StringMatch\fR(\fIstring\fR, \fIpattern\fR)
+\fBTcl_StringMatch\fR(\fIstr\fR, \fIpattern\fR)
 .sp
 int
-\fBTcl_StringCaseMatch\fR(\fIstring\fR, \fIpattern\fR, \fInocase\fR)
+\fBTcl_StringCaseMatch\fR(\fIstr\fR, \fIpattern\fR, \fIflags\fR)
 .SH ARGUMENTS
-.AP char *string in
+.AS "const char" *pattern
+.AP "const char" *str in
 String to test.
-.AP char *pattern in
+.AP "const char" *pattern in
 Pattern to match against string.  May contain special
 characters from the set *?\e[].
-.AP int nocase in
-Specifies whether the match should be done case-sensitive (0) or
-case-insensitive (1).
+.AP int flags in
+OR-ed combination of match flags, currently only \fBTCL_MATCH_NOCASE\fR.
+0 specifies a case-sensitive search.
 .BE
 
 .SH DESCRIPTION
@@ -35,16 +36,14 @@ case-insensitive (1).
 This utility procedure determines whether a string matches
 a given pattern.  If it does, then \fBTcl_StringMatch\fR returns
 1.  Otherwise \fBTcl_StringMatch\fR returns 0.  The algorithm
-used for matching is the same algorithm used in the ``string match''
+used for matching is the same algorithm used in the \fBstring match\fR
 Tcl command and is similar to the algorithm used by the C-shell
 for file name matching;  see the Tcl manual entry for details.
-.VS 8.1
 .PP
-In \fBTcl_StringCaseMatch\fR, the algorithm is the same, but you have
-the option to make the matching case-insensitive.  If you choose this
-(by passing \fBnocase\fR as 1), then the string and pattern are
-essentially matched in the lower case.
-.VE 8.1
+In \fBTcl_StringCaseMatch\fR, the algorithm is
+the same, but you have the option to make the matching case-insensitive.
+If you choose this (by passing \fBTCL_MATCH_NOCASE\fR), then the string and
+pattern are essentially matched in the lower case.
 
 .SH KEYWORDS
 match, pattern, string
diff --git a/doc/StringObj.3 b/doc/StringObj.3
index 6a624db..e451c61 100644
--- a/doc/StringObj.3
+++ b/doc/StringObj.3
@@ -8,7 +8,7 @@
 .TH Tcl_StringObj 3 8.1 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_NewStringObj, Tcl_NewUnicodeObj, Tcl_SetStringObj, Tcl_SetUnicodeObj, Tcl_GetStringFromObj, Tcl_GetString, Tcl_GetUnicodeFromObj, Tcl_GetUnicode, Tcl_GetUniChar, Tcl_GetCharLength, Tcl_GetRange, Tcl_AppendToObj, Tcl_AppendUnicodeToObj, Tcl_AppendStringsToObj, Tcl_AppendStringsToObjVA, Tcl_AppendObjToObj, Tcl_SetObjLength, Tcl_ConcatObj, Tcl_AttemptSetObjLength \- manipulate Tcl objects as strings
+Tcl_NewStringObj, Tcl_NewUnicodeObj, Tcl_SetStringObj, Tcl_SetUnicodeObj, Tcl_GetStringFromObj, Tcl_GetString, Tcl_GetUnicodeFromObj, Tcl_GetUnicode, Tcl_GetUniChar, Tcl_GetCharLength, Tcl_GetRange, Tcl_AppendToObj, Tcl_AppendUnicodeToObj, Tcl_AppendObjToObj, Tcl_AppendStringsToObj, Tcl_AppendStringsToObjVA, Tcl_AppendLimitedToObj, Tcl_Format, Tcl_AppendFormatToObj, Tcl_ObjPrintf, Tcl_AppendPrintfToObj, Tcl_SetObjLength, Tcl_AttemptSetObjLength, Tcl_ConcatObj \- manipulate Tcl objects as strings
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -60,6 +60,23 @@ void
 .sp
 void
 \fBTcl_AppendStringsToObjVA\fR(\fIobjPtr, argList\fR)
+.VS 8.5
+.sp
+void
+\fBTcl_AppendLimitedToObj\fR(\fIobjPtr, bytes, length, limit, ellipsis\fR)
+.sp
+Tcl_Obj *
+\fBTcl_Format\fR(\fIinterp, format, objc, objv\fR)
+.sp
+int
+\fBTcl_AppendFormatToObj\fR(\fIinterp, objPtr, format, objc, objv\fR)
+.sp
+Tcl_Obj *
+\fBTcl_ObjPrintf\fR(\fIformat, ...\fR)
+.sp
+int
+\fBTcl_AppendPrintfToObj\fR(\fIobjPtr, format, ...\fR)
+.VE 8.5
 .sp
 void
 \fBTcl_SetObjLength\fR(\fIobjPtr, newLength\fR)
@@ -70,22 +87,20 @@ int
 Tcl_Obj *
 \fBTcl_ConcatObj\fR(\fIobjc, objv\fR)
 .SH ARGUMENTS
-.AS "CONST Tcl_UniChar" *appendObjPtr in/out
-.AP "CONST char" *bytes in
-.VS 8.1
+.AS "const Tcl_UniChar" *appendObjPtr in/out
+.AP "const char" *bytes in
 Points to the first byte of an array of UTF-8-encoded bytes
 used to set or append to a string object.
-This byte array should not contain embedded null bytes
-unless \fIlength\fR is negative.  (Applications needing null bytes
-should represent them as the two-byte sequence \fI\\700\\600\fR, use
+This byte array may contain embedded null characters
+unless \fInumChars\fR is negative.  (Applications needing null bytes
+should represent them as the two-byte sequence \fI\e700\e600\fR, use
 \fBTcl_ExternalToUtf\fR to convert, or \fBTcl_NewByteArrayObj\fR if
 the string is a collection of uninterpreted bytes.)
-.VE 8.1
 .AP int length in
 The number of bytes to copy from \fIbytes\fR when
 initializing, setting, or appending to a string object.
 If negative, all bytes up to the first null are used.
-.AP "CONST Tcl_UniChar" *unicode in
+.AP "const Tcl_UniChar" *unicode in
 Points to the first byte of an array of Unicode characters
 used to set or append to a string object.
 This byte array may contain embedded null characters
@@ -108,19 +123,26 @@ Points to an object to manipulate.
 The object to append to \fIobjPtr\fR in \fBTcl_AppendObjToObj\fR.
 .AP int *lengthPtr out
 If non-NULL, the location where \fBTcl_GetStringFromObj\fR will store
-the the length of an object's string representation.
-.AP "CONST char" *string in
+the length of an object's string representation.
+.AP "const char" *string in
 Null-terminated string value to append to \fIobjPtr\fR.
 .AP va_list argList in
 An argument list which must have been initialised using
-\fBTCL_VARARGS_START\fR, and cleared using \fBva_end\fR.
+\fBva_start\fR, and cleared using \fBva_end\fR.
+.AP int limit in
+Maximum number of bytes to be appended.
+.AP "const char" *ellipsis in
+Suffix to append when the limit leads to string truncation.
+If NULL is passed then the suffix "..." is used.
+.AP "const char" *format in
+Format control string including % conversion specifiers.
+.AP int objc in
+The number of elements to format or concatenate.
+.AP Tcl_Obj *objv[] in
+The array of objects to format or concatenate.
 .AP int newLength in
 New length for the string value of \fIobjPtr\fR, not including the
 final null character.
-.AP int objc in
-The number of elements to concatenate.
-.AP Tcl_Obj *objv[] in
-The array of objects to concatenate.
 .BE
 
 .SH DESCRIPTION
@@ -130,7 +152,7 @@ be manipulated as string values.  They use the internal representation
 of the object to store additional information to make the string
 manipulations more efficient.  In particular, they make a series of
 append operations efficient by allocating extra storage space for the
-string so that it doesn't have to be copied for each append.
+string so that it does not have to be copied for each append.
 Also, indexing and length computations are optimized because the
 Unicode string representation is calculated and cached as needed.
 When using the \fBTcl_Append*\fR family of functions where the
@@ -163,7 +185,7 @@ will be able to modify the string representation within the
 \fBTcl_UpdateStringProc\fR of their \fBTcl_ObjType\fR.  Except for that
 limited purpose, the pointer returned by \fBTcl_GetStringFromObj\fR
 or \fBTcl_GetString\fR should be treated as read-only.  It is
-recommended that this pointer be assigned to a (CONST char *) variable.
+recommended that this pointer be assigned to a (const char *) variable.
 Even in the limited situations where writing to this pointer is
 acceptable, one should take care to respect the copy-on-write
 semantics required by \fBTcl_Obj\fR's, with appropriate calls
@@ -229,6 +251,88 @@ must be a NULL pointer to indicate the end of the list.
 except that instead of taking a variable number of arguments it takes an
 argument list.
 .PP
+.VS 8.5
+\fBTcl_AppendLimitedToObj\fR is similar to \fBTcl_AppendToObj\fR
+except that it imposes a limit on how many bytes are appended.
+This can be handy when the string to be appended might be
+very large, but the value being constructed should not be allowed to grow
+without bound. A common usage is when constructing an error message, where the
+end result should be kept short enough to be read.
+Bytes from \fIbytes\fR are appended to \fIobjPtr\fR, but no more
+than \fIlimit\fR bytes total are to be appended. If the limit prevents
+all \fIlength\fR bytes that are available from being appended, then the
+appending is done so that the last bytes appended are from the
+string \fIellipsis\fR. This allows for an indication of the truncation
+to be left in the string.
+When \fIlength\fR is \fB-1\fR, all bytes up to the first zero byte are appended,
+subject to the limit. When \fIellipsis\fR is NULL, the default
+string \fB...\fR is used. When \fIellipsis\fR is non-NULL, it must point
+to a zero-byte-terminated string in Tcl's internal UTF encoding.
+The number of bytes appended can be less than the lesser
+of \fIlength\fR and \fIlimit\fR when appending fewer
+bytes is necessary to append only whole multi-byte characters.
+.PP
+\fBTcl_Format\fR is the C-level interface to the engine of the \fBformat\fR
+command.  The actual command procedure for \fBformat\fR is little more
+than
+.CS
+Tcl_Format(interp, Tcl_GetString(objv[1]), objc-2, objv+2);
+.CE
+The \fIobjc\fR Tcl_Obj values in \fIobjv\fR are formatted into a string
+according to the conversion specification in \fIformat\fR argument, following
+the documentation for the \fBformat\fR command.  The resulting formatted
+string is converted to a new Tcl_Obj with refcount of zero and returned.
+If some error happens during production of the formatted string, NULL is
+returned, and an error message is recorded in \fIinterp\fR, if \fIinterp\fR
+is non-NULL.
+.PP
+\fBTcl_AppendFormatToObj\fR is an appending alternative form
+of \fBTcl_Format\fR with functionality equivalent to
+.CS
+Tcl_Obj *newPtr = Tcl_Format(interp, format, objc, objv);
+if (newPtr == NULL) return TCL_ERROR;
+Tcl_AppendObjToObj(objPtr, newPtr);
+return TCL_OK;
+.CE
+but with greater convenience and efficiency when the appending
+functionality is needed.
+.PP
+\fBTcl_ObjPrintf\fR serves as a replacement for the common sequence
+.CS
+char buf[SOME_SUITABLE_LENGTH];
+sprintf(buf, format, ...);
+Tcl_NewStringObj(buf, -1);
+.CE
+but with greater convenience and no need to 
+determine \fBSOME_SUITABLE_LENGTH\fR. The formatting is done with the same
+core formatting engine used by \fBTcl_Format\fR.  This means the set of
+supported conversion specifiers is that of the \fBformat\fR command and
+not that of the \fBsprintf\fR routine where the two sets differ. When a
+conversion specifier passed to \fBTcl_ObjPrintf\fR includes a precision,
+the value is taken as a number of bytes, as \fBsprintf\fR does, and not
+as a number of characters, as \fBformat\fR does.  This is done on the
+assumption that C code is more likely to know how many bytes it is
+passing around than the number of encoded characters those bytes happen
+to represent.  The variable number of arguments passed in should be of
+the types that would be suitable for passing to \fBsprintf\fR.  Note in
+this example usage, \fIx\fR is of type \fBlong\fR.
+.CS
+long x = 5;
+Tcl_Obj *objPtr = Tcl_ObjPrintf("Value is %d", x);
+.CE
+If the value of \fIformat\fR contains internal inconsistencies or invalid
+specifier formats, the formatted string result produced by
+\fBTcl_ObjPrintf\fR will be an error message describing the error.
+.PP
+\fBTcl_AppendPrintfToObj\fR is an appending alternative form
+of \fBTcl_ObjPrintf\fR with functionality equivalent to
+.CS
+Tcl_AppendObjToObj(objPtr, Tcl_ObjPrintf(format, ...));
+.CE
+but with greater convenience and efficiency when the appending
+functionality is needed.
+.VE 8.5
+.PP
 The \fBTcl_SetObjLength\fR procedure changes the length of the
 string value of its \fIobjPtr\fR argument.  If the \fInewLength\fR
 argument is greater than the space allocated for the object's
@@ -265,7 +369,7 @@ cleaner-looking. \fBTcl_ConcatObj\fR returns a pointer to a
 newly-created object whose ref count is zero.
 
 .SH "SEE ALSO"
-Tcl_NewObj, Tcl_IncrRefCount, Tcl_DecrRefCount
+Tcl_NewObj, Tcl_IncrRefCount, Tcl_DecrRefCount, format, sprintf
 
 .SH KEYWORDS
 append, internal representation, object, object type, string object,
diff --git a/doc/SubstObj.3 b/doc/SubstObj.3
index 9f016c0..786b595 100644
--- a/doc/SubstObj.3
+++ b/doc/SubstObj.3
@@ -16,7 +16,7 @@ Tcl_SubstObj \- perform substitutions on Tcl objects
 Tcl_Obj *
 \fBTcl_SubstObj\fR(\fIinterp, objPtr, flags\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp **termPtr;
+.AS Tcl_Interp **termPtr
 .AP Tcl_Interp *interp in
 Interpreter in which to execute Tcl scripts and lookup variables.  If
 an error occurs, the interpreter's result is modified to hold an error
@@ -30,7 +30,6 @@ perform.  The flags \fBTCL_SUBST_COMMANDS\fR,
 currently supported, and \fBTCL_SUBST_ALL\fR is provided as a
 convenience for the common case where all substitutions are desired.
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBTcl_SubstObj\fR function is used to perform substitutions on
@@ -51,19 +50,19 @@ When the \fBTCL_SUBST_VARIABLES\fR bit is set in \fIflags\fR,
 sequences that look like variable substitutions for Tcl commands are
 replaced by the contents of the named variable.
 .PP
-When th \fBTCL_SUBST_COMMANDS\fR bit is set in \fIflags\fR, sequences
+When the \fBTCL_SUBST_COMMANDS\fR bit is set in \fIflags\fR, sequences
 that look like command substitutions for Tcl commands are replaced by
-the result of evaluating that script.  Where an uncaught continue
-exception occurs during the evaluation of a command substitution, an
-empty string is substituted for the command.  Where an uncaught break
-exception occurs during the evaluation of a command substitution, the
+the result of evaluating that script.  Where an uncaught
+.QW "continue exception"
+occurs during the evaluation of a command substitution, an
+empty string is substituted for the command.  Where an uncaught
+.QW "break exception"
+occurs during the evaluation of a command substitution, the
 result of the whole substitution on \fIobjPtr\fR will be truncated at
 the point immediately before the start of the command substitution,
 and no characters will be added to the result or substitutions
 performed after that point.
-
 .SH "SEE ALSO"
 subst(n)
-
 .SH KEYWORDS
 backslash substitution, command substitution, variable substitution
diff --git a/doc/TCL_MEM_DEBUG.3 b/doc/TCL_MEM_DEBUG.3
index def44c1..5a3e08a 100644
--- a/doc/TCL_MEM_DEBUG.3
+++ b/doc/TCL_MEM_DEBUG.3
@@ -7,53 +7,56 @@
 .TH TCL_MEM_DEBUG 3 8.1 Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-TCL_MEM_DEBUG \- Compile-time flag to enable Tcl memory debugging.
+TCL_MEM_DEBUG \- Compile-time flag to enable Tcl memory debugging
 .BE
-
 .SH DESCRIPTION
 When Tcl is compiled with \fBTCL_MEM_DEBUG\fR defined, a powerful set
-of memory debugging aids are included in the compiled binary.  This
+of memory debugging aids is included in the compiled binary.  This
 includes C and Tcl functions which can aid with debugging
 memory leaks, memory allocation overruns, and other memory related
 errors.
-
 .SH "ENABLING MEMORY DEBUGGING"
 .PP
 To enable memory debugging, Tcl should be recompiled from scratch with
-\fBTCL_MEM_DEBUG\fR defined.  This will also compile in a non-stub
+\fBTCL_MEM_DEBUG\fR defined (e.g. by passing the
+\fI\-\-enable\-symbols=mem\fR flag to the \fIconfigure\fR script when
+building).  This will also compile in a non-stub
 version of \fBTcl_InitMemory\fR to add the \fBmemory\fR command to Tcl.
 .PP
 \fBTCL_MEM_DEBUG\fR must be either left defined for all modules or undefined
 for all modules that are going to be linked together.  If they are not, link
-errors will occur, with either \fBTclDbCkfree\fR and \fBTcl_DbCkalloc\fR or
+errors will occur, with either \fBTcl_DbCkfree\fR and \fBTcl_DbCkalloc\fR or
 \fBTcl_Alloc\fR and \fBTcl_Free\fR being undefined.
 .PP
 Once memory debugging support has been compiled into Tcl, the C
 functions \fBTcl_ValidateAllMemory\fR, and \fBTcl_DumpActiveMemory\fR,
 and the Tcl \fBmemory\fR command can be used to validate and examine
 memory usage.
-
 .SH "GUARD ZONES"
 .PP
 When memory debugging is enabled, whenever a call to \fBckalloc\fR is
-made, slightly more memory than requested is allocated so the memory debugging
-code can keep track of the allocated memory, and eight-byte ``guard
-zones'' are placed in front of and behind the space that will be
+made, slightly more memory than requested is allocated so the memory
+debugging code can keep track of the allocated memory, and eight-byte
+.QW "guard zones"
+are placed in front of and behind the space that will be
 returned to the caller.  (The sizes of the guard zones are defined by the
 C #define \fBLOW_GUARD_SIZE\fR and #define \fBHIGH_GUARD_SIZE\fR
-in the file \fIgeneric/tclCkalloc.c\fR -- it can
+in the file \fIgeneric/tclCkalloc.c\fR \(em it can
 be extended if you suspect large overwrite problems, at some cost in
 performance.)  A known pattern is written into the guard zones and, on
 a call to \fBckfree\fR, the guard zones of the space being freed are
 checked to see if either zone has been modified in any way.  If one
 has been, the guard bytes and their new contents are identified, and a
-``low guard failed'' or ``high guard failed'' message is issued.  The
-``guard failed'' message includes the address of the memory packet and
+.QW "low guard failed"
+or
+.QW "high guard failed"
+message is issued.  The
+.QW "guard failed"
+message includes the address of the memory packet and
 the file name and line number of the code that called \fBckfree\fR.
 This allows you to detect the common sorts of one-off problems, where
 not enough space was allocated to contain the data written, for
 example.
-
 .SH "DEBUGGING DIFFICULT MEMORY CORRUPTION PROBLEMS"
 .PP
 Normally, Tcl compiled with memory debugging enabled will make it easy
@@ -66,16 +69,12 @@ This will enable memory validation from the first call to
 \fBckalloc\fR, again, at a large performance impact.
 .PP
 If you are desperate and validating memory on every call to
-\fBckalloc\fR and \fBckfree\fR isn't enough, you can explicitly call
+\fBckalloc\fR and \fBckfree\fR is not enough, you can explicitly call
 \fBTcl_ValidateAllMemory\fR directly at any point.  It takes a \fIchar
 *\fR and an \fIint\fR which are normally the filename and line number
 of the caller, but they can actually be anything you want.  Remember
 to remove the calls after you find the problem.
-
 .SH "SEE ALSO"
 ckalloc, memory, Tcl_ValidateAllMemory, Tcl_DumpActiveMemory
-
 .SH KEYWORDS
 memory, debug
-
-
diff --git a/doc/Tcl.n b/doc/Tcl.n
index d329bb9..8b5b501 100644
--- a/doc/Tcl.n
+++ b/doc/Tcl.n
@@ -6,7 +6,7 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\"
 .so man.macros
-.TH Tcl n "8.1" Tcl "Tcl Built-In Commands"
+.TH Tcl n "8.5" Tcl "Tcl Built-In Commands"
 .BS
 .SH NAME
 Tcl \- Tool Command Language
@@ -39,17 +39,37 @@ Different commands interpret their words differently.
 Words of a command are separated by white space (except for
 newlines, which are command separators).
 .IP "[4] \fBDouble quotes.\fR"
-If the first character of a word is double-quote (``"'') then
-the word is terminated by the next double-quote character.
+If the first character of a word is double-quote
+.PQ \N'34'
+then the word is terminated by the next double-quote character.
 If semi-colons, close brackets, or white space characters
 (including newlines) appear between the quotes then they are treated
 as ordinary characters and included in the word.
 Command substitution, variable substitution, and backslash substitution
 are performed on the characters between the quotes as described below.
 The double-quotes are not retained as part of the word.
-.IP "[5] \fBBraces.\fR"
-If the first character of a word is an open brace (``{'') then
-the word is terminated by the matching close brace (``}'').
+.VS 8.5 br
+.IP "[5] \fBArgument expansion.\fR"
+If a word starts with the string
+.QW {*}
+followed by a non-whitespace character, then the leading
+.QW {*}
+is removed and the rest of the word is parsed and substituted as any other
+word. After substitution, the word is parsed as a list (without command or
+variable substitutions; backslash substitutions are performed as is normal for
+a list and individual internal words may be surrounded by either braces or
+double-quote characters), and its words are added to the command being
+substituted. For instance,
+.QW "cmd a {*}{b [c]} d {*}{$e f \N'34'g h\N'34'}"
+is equivalent to
+.QW "cmd a b {[c]} d {$e} f \N'34'g h\N'34'" .
+.VE 8.5
+.IP "[6] \fBBraces.\fR"
+If the first character of a word is an open brace
+.PQ {
+and rule [5] does not apply, then
+the word is terminated by the matching close brace
+.PQ } "" .
 Braces nest within the word: for each additional open
 brace there must be an additional close brace (however,
 if an open brace or close brace within the word is
@@ -61,20 +81,24 @@ below, nor do semi-colons, newlines, close brackets,
 or white space receive any special interpretation.
 The word will consist of exactly the characters between the
 outer braces, not including the braces themselves.
-.IP "[6] \fBCommand substitution.\fR"
-If a word contains an open bracket (``['') then Tcl performs
-\fIcommand substitution\fR.
+.IP "[7] \fBCommand substitution.\fR"
+If a word contains an open bracket
+.PQ [
+then Tcl performs \fIcommand substitution\fR.
 To do this it invokes the Tcl interpreter recursively to process
 the characters following the open bracket as a Tcl script.
 The script may contain any number of commands and must be terminated
-by a close bracket (``]'').
+by a close bracket
+.PQ ] "" .
 The result of the script (i.e. the result of its last command) is
 substituted into the word in place of the brackets and all of the
 characters between them.
 There may be any number of command substitutions in a single word.
 Command substitution is not performed on words enclosed in braces.
-.IP "[7] \fBVariable substitution.\fR"
-If a word contains a dollar-sign (``$'') followed by one of the forms
+.IP "[8] \fBVariable substitution.\fR"
+If a word contains a dollar-sign
+.PQ $
+followed by one of the forms
 described below, then Tcl performs \fIvariable
 substitution\fR:  the dollar-sign and the following characters are
 replaced in the word by the value of a variable.
@@ -101,9 +125,10 @@ characters whatsoever except for close braces.
 There may be any number of variable substitutions in a single word.
 Variable substitution is not performed on words enclosed in braces.
 .RE
-.IP "[8] \fBBackslash substitution.\fR"
-If a backslash (``\e'') appears within a word then
-\fIbackslash substitution\fR occurs.
+.IP "[9] \fBBackslash substitution.\fR"
+If a backslash
+.PQ \e
+appears within a word then \fIbackslash substitution\fR occurs.
 In all cases but those described below the backslash is dropped and
 the following character is treated as an ordinary
 character and included in the word.
@@ -141,12 +166,12 @@ A single space character replaces the backslash, newline, and all spaces
 and tabs after the newline.  This backslash sequence is unique in that it
 is replaced in a separate pre-pass before the command is actually parsed.
 This means that it will be replaced even when it occurs between braces,
-and the resulting space will be treated as a word separator if it isn't
+and the resulting space will be treated as a word separator if it is not
 in braces or quotes.
 .TP 7
 \e\e
-Backslash (``\e'').
-.VS 8.1 br
+Backslash
+.PQ \e "" .
 .TP 7
 \e\fIooo\fR 
 .
@@ -167,19 +192,20 @@ be 0.
 The hexadecimal digits \fIhhhh\fR (one, two, three, or four of them) give a
 sixteen-bit hexadecimal value for the Unicode character that will be
 inserted.
-.VE
 .LP
 Backslash substitution is not performed on words enclosed in braces,
 except for backslash-newline as described above.
 .RE
-.IP "[9] \fBComments.\fR"
-If a hash character (``#'') appears at a point where Tcl is
+.IP "[10] \fBComments.\fR"
+If a hash character
+.PQ #
+appears at a point where Tcl is
 expecting the first character of the first word of a command,
 then the hash character and the characters that follow it, up
 through the next newline, are treated as a comment and ignored.
 The comment character only has significance when it appears
 at the beginning of a command.
-.IP "[10] \fBOrder of substitution.\fR"
+.IP "[11] \fBOrder of substitution.\fR"
 Each character is processed exactly once by the Tcl interpreter
 as part of creating the words of a command.
 For example, if variable substitution occurs then no further
@@ -200,8 +226,9 @@ set y [set x 0][incr x][incr x]
 .CE
 will always set the variable \fIy\fR to the value, \fI012\fR.
 .RE
-.IP "[11] \fBSubstitution and word boundaries.\fR"
-Substitutions do not affect the word boundaries of a command.
+.IP "[12] \fBSubstitution and word boundaries.\fR"
+Substitutions do not affect the word boundaries of a command,
+except for argument expansion as specified in rule [5].
 For example, during variable substitution the entire value of
 the variable becomes part of a single word, even if the variable's
 value contains spaces.
diff --git a/doc/Tcl_Main.3 b/doc/Tcl_Main.3
index 4f29c82..54b2e84 100644
--- a/doc/Tcl_Main.3
+++ b/doc/Tcl_Main.3
@@ -19,7 +19,7 @@ Tcl_Main, Tcl_SetMainLoop \- main program and event loop definition for Tcl-base
 .sp
 \fBTcl_SetMainLoop\fR(\fImainLoopProc\fR)
 .SH ARGUMENTS
-.AS Tcl_AppInitProc *appInitProc
+.AS Tcl_MainLoopProc *mainLoopProc
 .AP int argc in
 Number of elements in \fIargv\fR.
 .AP char *argv[] in
@@ -34,7 +34,9 @@ Address of an application-specific event loop procedure.
 .SH DESCRIPTION
 .PP
 \fBTcl_Main\fR can serve as the main program for Tcl-based shell
-applications.  A ``shell application'' is a program
+applications.  A
+.QW "shell application"
+is a program
 like tclsh or wish that supports both interactive interpretation
 of Tcl and evaluation of a script contained in a file given as
 a command line argument.  \fBTcl_Main\fR is offered as a convenience
@@ -74,9 +76,12 @@ channels to their default values. See \fBTcl_StandardChannels\fR for
 more information.
 .PP
 \fBTcl_Main\fR supports two modes of operation, depending on the
-values of \fIargc\fR and \fIargv\fR.  If \fIargv[1]\fR exists and
-does not begin with the character \fI-\fR, it is taken to be the
-name of a file containing a \fIstartup script\fR, which \fBTcl_Main\fR
+values of \fIargc\fR and \fIargv\fR.  If the first few arguments
+in \fIargv\fR match ?\fB\-encoding \fIname\fR? \fIfileName\fR,
+where \fIfileName\fR does not begin with the character \fI\-\fR,
+then \fIfileName\fR is taken to be the name of a file containing
+a \fIstartup script\fR, and \fIname\fR is taken to be the name
+of the encoding of the contents of that file, which \fBTcl_Main\fR
 will attempt to evaluate.  Otherwise, \fBTcl_Main\fR will enter an
 interactive mode.
 .PP
@@ -86,8 +91,9 @@ the Tcl variables \fIargc\fR, \fIargv\fR, \fIargv0\fR, and
 .PP
 When it has finished its own initialization, but before it processes
 commands, \fBTcl_Main\fR calls the procedure given by the
-\fIappInitProc\fR argument.  This procedure provides a ``hook'' for
-the application to perform its own initialization of the interpreter
+\fIappInitProc\fR argument.  This procedure provides a
+.QW hook
+for the application to perform its own initialization of the interpreter
 created by \fBTcl_Main\fR, such as defining application-specific
 commands.  The procedure must have an interface that matches the
 type \fBTcl_AppInitProc\fR:
@@ -114,7 +120,6 @@ The prompts and command evaluation results are written to the standard
 output channel only if the Tcl variable \fItcl_interactive\fR in the
 master interpreter holds a non-zero integer value.
 .PP
-.VS 8.4
 \fBTcl_SetMainLoop\fR allows setting an event loop procedure to be run.
 This allows, for example, Tk to be dynamically loaded and set its event
 loop.  The event loop will run following the startup script.  If you
@@ -127,7 +132,6 @@ The main loop procedure must have an interface that matches the type
 .CS
 typedef void Tcl_MainLoopProc(void);
 .CE
-.VE 8.4
 .PP
 \fBTcl_Main\fR does not return.  Normally a program based on
 \fBTcl_Main\fR will terminate when the \fBexit\fR command is
diff --git a/doc/Thread.3 b/doc/Thread.3
index 2ffd6ef..80d34ad 100644
--- a/doc/Thread.3
+++ b/doc/Thread.3
@@ -9,7 +9,7 @@
 .TH Threads 3 "8.1" Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_ConditionNotify, Tcl_ConditionWait, Tcl_ConditionFinalize, Tcl_GetThreadData, Tcl_MutexLock, Tcl_MutexUnlock, Tcl_MutexFinalize, Tcl_CreateThread, Tcl_JoinThread \- Tcl thread support.
+Tcl_ConditionNotify, Tcl_ConditionWait, Tcl_ConditionFinalize, Tcl_GetThreadData, Tcl_MutexLock, Tcl_MutexUnlock, Tcl_MutexFinalize, Tcl_CreateThread, Tcl_JoinThread \- Tcl thread support
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -41,14 +41,14 @@ int
 int
 \fBTcl_JoinThread\fR(\fIid, result\fR)
 .SH ARGUMENTS
-.AS Tcl_ThreadDataKey *keyPtr
+.AS Tcl_CreateThreadProc threadProc out
 .AP Tcl_Condition *condPtr in
 A condition variable, which must be associated with a mutex lock.
 .AP Tcl_Mutex *mutexPtr in
 A mutex lock.
 .AP Tcl_Time *timePtr in
 A time limit on the condition wait.  NULL to wait forever.
-Note that a polling value of 0 seconds doesn't make much sense.
+Note that a polling value of 0 seconds does not make much sense.
 .AP Tcl_ThreadDataKey *keyPtr in
 This identifies a block of thread local storage.  The key should be
 static and process-wide, yet each thread will end up associating
@@ -80,42 +80,38 @@ waited upon into it.
 Beginning with the 8.1 release, the Tcl core is thread safe, which
 allows you to incorporate Tcl into multithreaded applications without
 customizing the Tcl core.  To enable Tcl multithreading support,
-you must include the \fB--enable-threads\fR option to \fBconfigure\fR
+you must include the \fB\-\|\-enable-threads\fR option to \fBconfigure\fR
 when you configure and compile your Tcl core.
 .PP
 An important constraint of the Tcl threads implementation is that
 \fIonly the thread that created a Tcl interpreter can use that
 interpreter\fR.  In other words, multiple threads can not access
-the same Tcl interpreter.  (However, as was the case in previous
-releases, a single thread can safely create and use multiple
-interpreters.)
-.PP
-.VS 8.3.1
-Tcl does provide \fBTcl_CreateThread\fR for creating threads. The
+the same Tcl interpreter.  (However, a single thread can safely create
+and use multiple interpreters.)
+.SH DESCRIPTION
+Tcl provides \fBTcl_CreateThread\fR for creating threads. The
 caller can determine the size of the stack given to the new thread and
 modify the behaviour through the supplied \fIflags\fR. The value
 \fBTCL_THREAD_STACK_DEFAULT\fR for the \fIstackSize\fR indicates that
 the default size as specified by the operating system is to be used
-for the new thread. As for the flags, currently are only the values
-\fBTCL_THREAD_NOFLAGS\fR and \fBTCL_THREAD_JOINABLE\fR defined. The
+for the new thread. As for the flags, currently only the values
+\fBTCL_THREAD_NOFLAGS\fR and \fBTCL_THREAD_JOINABLE\fR are defined. The
 first of them invokes the default behaviour with no
 specialties. Using the second value marks the new thread as
 \fIjoinable\fR. This means that another thread can wait for the such
 marked thread to exit and join it.
 .PP
-Restrictions: On some unix systems the pthread-library does not
-contain the functionality to specify the stacksize of a thread. The
-specified value for the stacksize is ignored on these systems. Both
-Windows and Macintosh currently do not support joinable threads. This
-flag value is therefore ignored on these platforms.
-.VE
+Restrictions: On some UNIX systems the pthread-library does not
+contain the functionality to specify the stack size of a thread. The
+specified value for the stack size is ignored on these systems.
+Windows currently does not support joinable threads. This
+flag value is therefore ignored on this platform.
 .PP
-Tcl does provide \fBTcl_ExitThread\fR and \fBTcl_FinalizeThread\fR
+Tcl provides the \fBTcl_ExitThread\fR and \fBTcl_FinalizeThread\fR functions
 for terminating threads and invoking optional per-thread exit
 handlers.  See the \fBTcl_Exit\fR page for more information on these
 procedures.
 .PP
-.VS
 The \fBTcl_JoinThread\fR function is provided to allow threads to wait
 upon the exit of another thread, which must have been marked as
 joinable through usage of the \fBTCL_THREAD_JOINABLE\fR-flag during
@@ -127,36 +123,29 @@ thread which already exited is possible, the system will retain the
 necessary information until after the call to \fBTcl_JoinThread\fR.
 This means that not calling \fBTcl_JoinThread\fR for a joinable thread
 will cause a memory leak.
-.VE
 .PP
+The \fBTcl_GetThreadData\fR call returns a pointer to a block of
+thread-private data.  Its argument is a key that is shared by all threads
+and a size for the block of storage.  The storage is automatically 
+allocated and initialized to all zeros the first time each thread asks for it.
+The storage is automatically deallocated by \fBTcl_FinalizeThread\fR.
+.SS "SYNCHRONIZATION AND COMMUNICATION"
 Tcl provides \fBTcl_ThreadQueueEvent\fR and \fBTcl_ThreadAlert\fR
-for handling event queueing in multithreaded applications.  See
+for handling event queuing in multithreaded applications.  See
 the \fBNotifier\fR manual page for more information on these procedures.
 .PP
-In this release, the Tcl language itself provides no support for
-creating multithreaded scripts (for example, scripts that could spawn
-a Tcl interpreter in a separate thread).  If you need to add this
-feature at this time, see the \fItclThreadTest.c\fR
-file in the Tcl source distribution for an experimental implementation
-or use the Tcl "Threading Extension" package implementing thread creation
-and management commands at the script level.
-
-
-.SH DESCRIPTION
 A mutex is a lock that is used to serialize all threads through a piece
 of code by calling \fBTcl_MutexLock\fR and \fBTcl_MutexUnlock\fR.
 If one thread holds a mutex, any other thread calling \fBTcl_MutexLock\fR will
 block until \fBTcl_MutexUnlock\fR is called.
-.VS
 A mutex can be destroyed after its use by calling \fBTcl_MutexFinalize\fR.
 The result of locking a mutex twice from the same thread is undefined.
 On some platforms it will result in a deadlock.
-.VE
 The \fBTcl_MutexLock\fR, \fBTcl_MutexUnlock\fR and \fBTcl_MutexFinalize\fR
 procedures are defined as empty macros if not compiling with threads enabled.
 For declaration of mutexes the \fBTCL_DECLARE_MUTEX\fR macro should be used.
 This macro assures correct mutex handling even when the core is compiled
-without threads enabled. 
+without threads enabled.
 .PP
 A condition variable is used as a signaling mechanism:
 a thread can lock a mutex and then wait on a condition variable
@@ -174,40 +163,33 @@ The caller of \fBTcl_ConditionWait\fR should be prepared for spurious
 notifications by calling \fBTcl_ConditionWait\fR within a while loop
 that tests some invariant.
 .PP
-.VS
 A condition variable can be destroyed after its use by calling
 \fBTcl_ConditionFinalize\fR.
 .PP
 The \fBTcl_ConditionNotify\fR, \fBTcl_ConditionWait\fR and
 \fBTcl_ConditionFinalize\fR procedures are defined as empty macros if
 not compiling with threads enabled.
-.VE
-.PP
-The \fBTcl_GetThreadData\fR call returns a pointer to a block of
-thread-private data.  Its argument is a key that is shared by all threads
-and a size for the block of storage.  The storage is automatically 
-allocated and initialized to all zeros the first time each thread asks for it.
-The storage is automatically deallocated by \fBTcl_FinalizeThread\fR.
-.SH INITIALIZATION
+.SS INITIALIZATION
 .PP
-All of these synchronization objects are self initializing.
+All of these synchronization objects are self-initializing.
 They are implemented as opaque pointers that should be NULL
 upon first use.
 The mutexes and condition variables are
-.VS
 either cleaned up by process exit handlers (if living that long) or
 explicitly by calls to \fBTcl_MutexFinalize\fR or
 \fBTcl_ConditionFinalize\fR.
-.VE
 Thread local storage is reclaimed during \fBTcl_FinalizeThread\fR.
-.SH "CREATING THREADS"
-The API to create threads is not finalized at this time.
-There are private facilities to create threads that contain a new
-Tcl interpreter, and to send scripts among threads.
-Dive into tclThreadTest.c and tclThread.c for examples.
+.SH "SCRIPT-LEVEL ACCESS TO THREADS"
+.VS 8.5
+Tcl provides no built-in commands for scripts to use to create,
+manage, or join threads, nor any script-level access to mutex or
+condition variables.  It provides such facilities only via C
+interfaces, and leaves it up to packages to expose these matters to
+the script level.  One such package is the \fBThread\fR package.
+.VE 8.5
 .SH "SEE ALSO"
-Tcl_GetCurrentThread, Tcl_ThreadQueueEvent, Tcl_ThreadAlert,
-Tcl_ExitThread, Tcl_FinalizeThread,
-Tcl_CreateThreadExitHandler, Tcl_DeleteThreadExitHandler
+Tcl_GetCurrentThread(3), Tcl_ThreadQueueEvent(3), Tcl_ThreadAlert(3),
+Tcl_ExitThread(3), Tcl_FinalizeThread(3), Tcl_CreateThreadExitHandler(3),
+Tcl_DeleteThreadExitHandler(3), Thread
 .SH KEYWORDS
 thread, mutex, condition variable, thread local storage
diff --git a/doc/ToUpper.3 b/doc/ToUpper.3
index ece0fb2..d6b3006 100644
--- a/doc/ToUpper.3
+++ b/doc/ToUpper.3
@@ -8,7 +8,7 @@
 .TH Tcl_UtfToUpper 3 "8.1" Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_UniCharToUpper, Tcl_UniCharToLower, Tcl_UniCharToTitle, Tcl_UtfToUpper, Tcl_UtfToLower, Tcl_UtfToTitle \- routines for manipulating the case of Unicode characters and UTF-8 strings.
+Tcl_UniCharToUpper, Tcl_UniCharToLower, Tcl_UniCharToTitle, Tcl_UtfToUpper, Tcl_UtfToLower, Tcl_UtfToTitle \- routines for manipulating the case of Unicode characters and UTF-8 strings
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
diff --git a/doc/TraceCmd.3 b/doc/TraceCmd.3
index 5c84249..020f1ca 100644
--- a/doc/TraceCmd.3
+++ b/doc/TraceCmd.3
@@ -25,10 +25,11 @@ void
 .AS Tcl_CommandTraceProc prevClientData
 .AP Tcl_Interp *interp in
 Interpreter containing the command.
-.AP "CONST char" *cmdName in
+.AP "const char" *cmdName in
 Name of command.
 .AP int flags in
-OR-ed collection of the value TCL_TRACE_RENAME and TCL_TRACE_DELETE.
+OR'ed collection of the values \fBTCL_TRACE_RENAME\fR and
+\fBTCL_TRACE_DELETE\fR.
 .AP Tcl_CommandTraceProc *proc in
 Procedure to call when specified operations occur to \fIcmdName\fR.
 .AP ClientData clientData in
@@ -38,19 +39,18 @@ If non-NULL, gives last value returned by \fBTcl_CommandTraceInfo\fR,
 so this call will return information about next trace.  If NULL, this
 call will return information about first trace.
 .BE
-
 .SH DESCRIPTION
 .PP
 \fBTcl_TraceCommand\fR allows a C procedure to monitor operations
 performed on a Tcl command, so that the C procedure is invoked
 whenever the command is renamed or deleted.  If the trace is created
-successfully then \fBTcl_TraceCommand\fR returns TCL_OK.  If an error
+successfully then \fBTcl_TraceCommand\fR returns \fBTCL_OK\fR. If an error
 occurred (e.g. \fIcmdName\fR specifies a non-existent command) then
-TCL_ERROR is returned and an error message is left in the
+\fBTCL_ERROR\fR is returned and an error message is left in the
 interpreter's result.
 .PP
 The \fIflags\fR argument to \fBTcl_TraceCommand\fR indicates when the
-trace procedure is to be invoked.  It consists of an OR-ed combination
+trace procedure is to be invoked.  It consists of an OR'ed combination
 of any of the following values:
 .TP
 \fBTCL_TRACE_RENAME\fR
@@ -64,10 +64,10 @@ Whenever one of the specified operations occurs to the command,
 match the type \fBTcl_CommandTraceProc\fR:
 .CS
 typedef void Tcl_CommandTraceProc(
-	ClientData \fIclientData\fR,
+        ClientData \fIclientData\fR,
         Tcl_Interp *\fIinterp\fR,
-	CONST char *\fIoldName\fR,
-	CONST char *\fInewName\fR,
+        const char *\fIoldName\fR,
+        const char *\fInewName\fR,
         int \fIflags\fR);
 .CE
 The \fIclientData\fR and \fIinterp\fR parameters will have the same
@@ -77,17 +77,17 @@ data structure that describes what to do when \fIproc\fR is invoked.
 \fIOldName\fR gives the name of the command being renamed, and
 \fInewName\fR gives the name that the command is being renamed to (or
 an empty string or NULL when the command is being deleted.)
-\fIFlags\fR is an OR-ed combination of bits potentially providing
-several pieces of information.  One of the bits TCL_TRACE_RENAME and
-TCL_TRACE_DELETE will be set in \fIflags\fR to indicate which
+\fIFlags\fR is an OR'ed combination of bits potentially providing
+several pieces of information.  One of the bits \fBTCL_TRACE_RENAME\fR and
+\fBTCL_TRACE_DELETE\fR will be set in \fIflags\fR to indicate which
 operation is being performed on the command.  The bit
-TCL_TRACE_DESTROYED will be set in \fIflags\fR if the trace is about
+\fBTCL_TRACE_DESTROYED\fR will be set in \fIflags\fR if the trace is about
 to be destroyed; this information may be useful to \fIproc\fR so that
 it can clean up its own internal data structures (see the section
-TCL_TRACE_DESTROYED below for more details).  Lastly, the bit
-TCL_INTERP_DESTROYED will be set if the entire interpreter is being
+\fBTCL_TRACE_DESTROYED\fR below for more details).  Lastly, the bit
+\fBTCL_INTERP_DESTROYED\fR will be set if the entire interpreter is being
 destroyed.  When this bit is set, \fIproc\fR must be especially
-careful in the things it does (see the section TCL_INTERP_DESTROYED
+careful in the things it does (see the section \fBTCL_INTERP_DESTROYED\fR
 below).
 .PP
 \fBTcl_UntraceCommand\fR may be used to remove a trace.  If the
@@ -109,7 +109,7 @@ argument.
 If the \fIprevClientData\fR argument is NULL then the return
 value corresponds to the first (most recently created) matching
 trace, or NULL if there are no matching traces.
-If the \fIprevClientData\fR argument isn't NULL, then it should
+If the \fIprevClientData\fR argument is not NULL, then it should
 be the return value from a previous call to \fBTcl_CommandTraceInfo\fR.
 In this case, the new return value will correspond to the next
 matching trace after the one whose \fIclientData\fR matches
@@ -117,15 +117,13 @@ matching trace after the one whose \fIclientData\fR matches
 or if there are no more matching traces after it.
 This mechanism makes it possible to step through all of the
 traces for a given command that have the same \fIproc\fR.
-
 .SH "CALLING COMMANDS DURING TRACES"
 .PP
 During rename traces, the command being renamed is visible with both
 names simultaneously, and the command still exists during delete
-traces (if TCL_INTERP_DESTROYED is not set).  However, there is no
+traces (if \fBTCL_INTERP_DESTROYED\fR is not set).  However, there is no
 mechanism for signaling that an error occurred in a trace procedure,
 so great care should be taken that errors do not get silently lost.
-
 .SH "MULTIPLE TRACES"
 .PP
 It is possible for multiple traces to exist on the same command.
@@ -137,32 +135,27 @@ If the command being renamed is renamed by one of its rename traces,
 that renaming takes precedence over the one that triggered the trace
 and the collection of traces will not be reexecuted; if several traces
 rename the command, the last renaming takes precedence.
-
 .SH "TCL_TRACE_DESTROYED FLAG"
 .PP
-In a delete callback to \fIproc\fR, the TCL_TRACE_DESTROYED bit
+In a delete callback to \fIproc\fR, the \fBTCL_TRACE_DESTROYED\fR bit
 is set in \fIflags\fR.
-
-'\" Perhaps need some more comments here? - DKF
-
+.\" Perhaps need some more comments here? - DKF
 .SH "TCL_INTERP_DESTROYED"
 .PP
 When an interpreter is destroyed, unset traces are called for
 all of its commands.
-The TCL_INTERP_DESTROYED bit will be set in the \fIflags\fR
+The \fBTCL_INTERP_DESTROYED\fR bit will be set in the \fIflags\fR
 argument passed to the trace procedures.
 Trace procedures must be extremely careful in what they do if
-the TCL_INTERP_DESTROYED bit is set.
+the \fBTCL_INTERP_DESTROYED\fR bit is set.
 It is not safe for the procedures to invoke any Tcl procedures
 on the interpreter, since its state is partially deleted.
 All that trace procedures should do under these circumstances is
 to clean up and free their own internal data structures.
-
 .SH BUGS
 .PP
-Tcl doesn't do any error checking to prevent trace procedures
-from misusing the interpreter during traces with TCL_INTERP_DESTROYED
+Tcl does not do any error checking to prevent trace procedures
+from misusing the interpreter during traces with \fBTCL_INTERP_DESTROYED\fR
 set.
-
 .SH KEYWORDS
 clientData, trace, command
diff --git a/doc/TraceVar.3 b/doc/TraceVar.3
index 98b242e..f80d86f 100644
--- a/doc/TraceVar.3
+++ b/doc/TraceVar.3
@@ -33,23 +33,24 @@ ClientData
 .AS Tcl_VarTraceProc prevClientData
 .AP Tcl_Interp *interp in
 Interpreter containing variable.
-.AP "CONST char" *varName in
+.AP "const char" *varName in
 Name of variable.  May refer to a scalar variable, to
 an array variable with no index, or to an array variable
 with a parenthesized index.
 .AP int flags in
-OR-ed combination of the values TCL_TRACE_READS, TCL_TRACE_WRITES, 
-TCL_TRACE_UNSETS, TCL_TRACE_ARRAY, TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
-TCL_TRACE_RESULT_DYNAMIC and TCL_TRACE_RESULT_OBJECT.  
+OR-ed combination of the values \fBTCL_TRACE_READS\fR,
+\fBTCL_TRACE_WRITES\fR, \fBTCL_TRACE_UNSETS\fR, \fBTCL_TRACE_ARRAY\fR,
+\fBTCL_GLOBAL_ONLY\fR, \fBTCL_NAMESPACE_ONLY\fR,
+\fBTCL_TRACE_RESULT_DYNAMIC\fR and \fBTCL_TRACE_RESULT_OBJECT\fR.
 Not all flags are used by all
 procedures.  See below for more information.
 .AP Tcl_VarTraceProc *proc in
 Procedure to invoke whenever one of the traced operations occurs.
 .AP ClientData clientData in
 Arbitrary one-word value to pass to \fIproc\fR.
-.AP "CONST char" *name1 in
+.AP "const char" *name1 in
 Name of scalar or array variable (without array index).
-.AP "CONST char" *name2 in
+.AP "const char" *name2 in
 For a trace on an element of an array, gives the index of the
 element.  For traces on scalar variables or on whole arrays,
 is NULL.
@@ -59,15 +60,14 @@ If non-NULL, gives last value returned by \fBTcl_VarTraceInfo\fR or
 next trace.  If NULL, this call will return information about first
 trace.
 .BE
-
 .SH DESCRIPTION
 .PP
 \fBTcl_TraceVar\fR allows a C procedure to monitor and control
 access to a Tcl variable, so that the C procedure is invoked
 whenever the variable is read or written or unset.
 If the trace is created successfully then \fBTcl_TraceVar\fR returns
-TCL_OK.  If an error occurred (e.g. \fIvarName\fR specifies an element
-of an array, but the actual variable isn't an array) then TCL_ERROR
+\fBTCL_OK\fR.  If an error occurred (e.g. \fIvarName\fR specifies an element
+of an array, but the actual variable is not an array) then \fBTCL_ERROR\fR
 is returned and an error message is left in the interpreter's result.
 .PP
 The \fIflags\fR argument to \fBTcl_TraceVar\fR indicates when the
@@ -103,21 +103,19 @@ Invoke \fIproc\fR whenever the array command is invoked.
 This gives the trace procedure a chance to update the array before
 array names or array get is called.  Note that this is called
 before an array set, but that will trigger write traces.
-.VS 8.4
 .TP
 \fBTCL_TRACE_RESULT_DYNAMIC\fR
 The result of invoking the \fIproc\fR is a dynamically allocated
 string that will be released by the Tcl library via a call to
 \fBckfree\fR.  Must not be specified at the same time as
-TCL_TRACE_RESULT_OBJECT.
+\fBTCL_TRACE_RESULT_OBJECT\fR.
 .TP
 \fBTCL_TRACE_RESULT_OBJECT\fR
 The result of invoking the \fIproc\fR is a Tcl_Obj* (cast to a char*)
 with a reference count of at least one.  The ownership of that
 reference will be transferred to the Tcl core for release (when the
 core has finished with it) via a call to \fBTcl_DecrRefCount\fR.  Must
-not be specified at the same time as TCL_TRACE_RESULT_DYNAMIC.
-.VE 8.4
+not be specified at the same time as \fBTCL_TRACE_RESULT_DYNAMIC\fR.
 .PP
 Whenever one of the specified operations occurs on the variable,
 \fIproc\fR will be invoked.
@@ -125,11 +123,11 @@ It should have arguments and result that match the type
 \fBTcl_VarTraceProc\fR:
 .CS
 typedef char *Tcl_VarTraceProc(
-	ClientData \fIclientData\fR,
-	Tcl_Interp *\fIinterp\fR,
-	char *\fIname1\fR,
-	char *\fIname2\fR,
-	int \fIflags\fR);
+        ClientData \fIclientData\fR,
+        Tcl_Interp *\fIinterp\fR,
+        char *\fIname1\fR,
+        char *\fIname2\fR,
+        int \fIflags\fR);
 .CE
 The \fIclientData\fR and \fIinterp\fR parameters will
 have the same values as those passed to \fBTcl_TraceVar\fR when the
@@ -142,30 +140,30 @@ in the normal two-part form (see the description of \fBTcl_TraceVar2\fR
 below for details).
 \fIFlags\fR is an OR-ed combination of bits providing several
 pieces of information.
-One of the bits TCL_TRACE_READS, TCL_TRACE_WRITES, TCL_TRACE_ARRAY,
-or TCL_TRACE_UNSETS
+One of the bits \fBTCL_TRACE_READS\fR, \fBTCL_TRACE_WRITES\fR,
+\fBTCL_TRACE_ARRAY\fR, or \fBTCL_TRACE_UNSETS\fR
 will be set in \fIflags\fR to indicate which operation is being performed
 on the variable.
-The bit TCL_GLOBAL_ONLY will be set whenever the variable being
+The bit \fBTCL_GLOBAL_ONLY\fR will be set whenever the variable being
 accessed is a global one not accessible from the current level of
 procedure call:  the trace procedure will need to pass this flag
 back to variable-related procedures like \fBTcl_GetVar\fR if it
 attempts to access the variable.
-The bit TCL_NAMESPACE_ONLY will be set whenever the variable being
+The bit \fBTCL_NAMESPACE_ONLY\fR will be set whenever the variable being
 accessed is a namespace one not accessible from the current level of
 procedure call:  the trace procedure will need to pass this flag
 back to variable-related procedures like \fBTcl_GetVar\fR if it
 attempts to access the variable.
-The bit TCL_TRACE_DESTROYED will be set in \fIflags\fR if the trace is
+The bit \fBTCL_TRACE_DESTROYED\fR will be set in \fIflags\fR if the trace is
 about to be destroyed;  this information may be useful to \fIproc\fR
 so that it can clean up its own internal data structures (see
-the section TCL_TRACE_DESTROYED below for more details).
-Lastly, the bit TCL_INTERP_DESTROYED will be set if the entire
+the section \fBTCL_TRACE_DESTROYED\fR below for more details).
+Lastly, the bit \fBTCL_INTERP_DESTROYED\fR will be set if the entire
 interpreter is being destroyed.
 When this bit is set, \fIproc\fR must be especially careful in
-the things it does (see the section TCL_INTERP_DESTROYED below).
+the things it does (see the section \fBTCL_INTERP_DESTROYED\fR below).
 The trace procedure's return value should normally be NULL;  see
-ERROR RETURNS below for information on other possibilities.
+\fBERROR RETURNS\fR below for information on other possibilities.
 .PP
 \fBTcl_UntraceVar\fR may be used to remove a trace.
 If the variable specified by \fIinterp\fR, \fIvarName\fR, and \fIflags\fR
@@ -180,14 +178,14 @@ traces set on a given variable.
 The return value from \fBTcl_VarTraceInfo\fR is the \fIclientData\fR
 associated with a particular trace.
 The trace must be on the variable specified by the \fIinterp\fR,
-\fIvarName\fR, and \fIflags\fR arguments (only the TCL_GLOBAL_ONLY and
-TCL_NAMESPACE_ONLY bits from \fIflags\fR is used;  other bits are
+\fIvarName\fR, and \fIflags\fR arguments (only the \fBTCL_GLOBAL_ONLY\fR and
+\fBTCL_NAMESPACE_ONLY\fR bits from \fIflags\fR is used;  other bits are
 ignored) and its trace procedure must the same as the \fIproc\fR
 argument.
 If the \fIprevClientData\fR argument is NULL then the return
 value corresponds to the first (most recently created) matching
 trace, or NULL if there are no matching traces.
-If the \fIprevClientData\fR argument isn't NULL, then it should
+If the \fIprevClientData\fR argument is not NULL, then it should
 be the return value from a previous call to \fBTcl_VarTraceInfo\fR.
 In this case, the new return value will correspond to the next
 matching trace after the one whose \fIclientData\fR matches
@@ -195,7 +193,6 @@ matching trace after the one whose \fIclientData\fR matches
 or if there are no more matching traces after it.
 This mechanism makes it possible to step through all of the
 traces for a given variable that have the same \fIproc\fR.
-
 .SH "TWO-PART NAMES"
 .PP
 The procedures \fBTcl_TraceVar2\fR, \fBTcl_UntraceVar2\fR, and
@@ -204,7 +201,6 @@ The procedures \fBTcl_TraceVar2\fR, \fBTcl_UntraceVar2\fR, and
 except that the name of the variable consists of two parts.
 \fIName1\fR gives the name of a scalar variable or array,
 and \fIname2\fR gives the name of an element within an array.
-.VS 8.1
 When \fIname2\fR is NULL, 
 \fIname1\fR may contain both an array and an element name:
 if the name contains an open parenthesis and ends with a
@@ -213,14 +209,10 @@ treated as an element name (which can have any string value) and
 the characters before the first open
 parenthesis are treated as the name of an array variable.
 If \fIname2\fR is NULL and \fIname1\fR does not refer
-to an array element 
-.VE
-it means that either the variable is
+to an array element it means that either the variable is
 a scalar or the trace is to be set on the entire array rather
 than an individual element (see WHOLE-ARRAY TRACES below for
 more information). 
-
-
 .SH "ACCESSING VARIABLES DURING TRACES"
 .PP
 During read, write, and array traces, the
@@ -246,7 +238,6 @@ from the variable before any trace procedures are invoked.
 If new traces are set by unset trace procedures, these traces
 will be invoked on accesses to the variable by the trace
 procedures.
-
 .SH "CALLBACK TIMING"
 .PP
 When read tracing has been specified for a variable, the trace
@@ -286,7 +277,6 @@ When unset tracing has been specified, the trace procedure
 will be invoked whenever the variable is destroyed.
 The traces will be called after the variable has been
 completely unset.
-
 .SH "WHOLE-ARRAY TRACES"
 .PP
 If a call to \fBTcl_TraceVar\fR or \fBTcl_TraceVar2\fR specifies
@@ -299,7 +289,6 @@ When an array is unset, a whole-array trace will be invoked
 just once, with \fIname1\fR equal to the name of the array
 and \fIname2\fR NULL;  it will not be invoked once for each
 element.
-
 .SH "MULTIPLE TRACES"
 .PP
 It is possible for multiple traces to exist on the same variable.
@@ -311,7 +300,6 @@ before the individual-element traces.
 If a read or write trace unsets the variable then all of the unset
 traces will be invoked but the remainder of the read and write traces
 will be skipped.
-
 .SH "ERROR RETURNS"
 .PP
 Under normal conditions trace procedures should return NULL, indicating
@@ -320,13 +308,11 @@ If \fIproc\fR returns a non-NULL value it signifies that an
 error occurred.
 The return value must be a pointer to a static character string
 containing an error message,
-.VS 8.4
-unless (\fIexactly\fR one of) the TCL_TRACE_RESULT_DYNAMIC and
-TCL_TRACE_RESULT_OBJECT flags is set, which specify that the result is
+unless (\fIexactly\fR one of) the \fBTCL_TRACE_RESULT_DYNAMIC\fR and
+\fBTCL_TRACE_RESULT_OBJECT\fR flags is set, which specify that the result is
 either a dynamic string (to be released with \fBckfree\fR) or a
 Tcl_Obj* (cast to char* and to be released with
 \fBTcl_DecrRefCount\fR) containing the error message.
-.VE 8.4
 If a trace procedure returns an error, no further traces are
 invoked for the access and the traced access aborts with the
 given message.
@@ -340,56 +326,51 @@ The return value from \fIproc\fR is only used during read and
 write tracing.
 During unset traces, the return value is ignored and all relevant
 trace procedures will always be invoked.
-
 .SH "RESTRICTIONS"
 .PP
 A trace procedure can be called at any time, even when there
-is a partially-formed result in the interpreter's result area.  If
+is a partially formed result in the interpreter's result area.  If
 the trace procedure does anything that could damage this result (such
 as calling \fBTcl_Eval\fR) then it must save the original values of
 the interpreter's \fBresult\fR and \fBfreeProc\fR fields and restore
 them before it returns.
-
 .SH "UNDEFINED VARIABLES"
 .PP
 It is legal to set a trace on an undefined variable.
 The variable will still appear to be undefined until the
 first time its value is set.
 If an undefined variable is traced and then unset, the unset will fail
-with an error (``no such variable''), but the trace
-procedure will still be invoked.
-
+with an error
+.PQ "no such variable" "" ,
+but the trace procedure will still be invoked.
 .SH "TCL_TRACE_DESTROYED FLAG"
 .PP
-In an unset callback to \fIproc\fR, the TCL_TRACE_DESTROYED bit
+In an unset callback to \fIproc\fR, the \fBTCL_TRACE_DESTROYED\fR bit
 is set in \fIflags\fR if the trace is being removed as part
 of the deletion.
 Traces on a variable are always removed whenever the variable
-is deleted;  the only time TCL_TRACE_DESTROYED isn't set is for
+is deleted;  the only time \fBTCL_TRACE_DESTROYED\fR is not set is for
 a whole-array trace invoked when only a single element of an
 array is unset.
-
 .SH "TCL_INTERP_DESTROYED"
 .PP
 When an interpreter is destroyed, unset traces are called for
 all of its variables.
-The TCL_INTERP_DESTROYED bit will be set in the \fIflags\fR
+The \fBTCL_INTERP_DESTROYED\fR bit will be set in the \fIflags\fR
 argument passed to the trace procedures.
 Trace procedures must be extremely careful in what they do if
-the TCL_INTERP_DESTROYED bit is set.
+the \fBTCL_INTERP_DESTROYED\fR bit is set.
 It is not safe for the procedures to invoke any Tcl procedures
 on the interpreter, since its state is partially deleted.
 All that trace procedures should do under these circumstances is
 to clean up and free their own internal data structures.
-
 .SH BUGS
 .PP
-Tcl doesn't do any error checking to prevent trace procedures
-from misusing the interpreter during traces with TCL_INTERP_DESTROYED
+Tcl does not do any error checking to prevent trace procedures
+from misusing the interpreter during traces with \fBTCL_INTERP_DESTROYED\fR
 set.
 .PP
-Array traces are not yet integrated with the Tcl "info exists" command,
+Array traces are not yet integrated with the Tcl \fBinfo exists\fR command,
 nor is there Tcl-level access to array traces.
-
 .SH KEYWORDS
 clientData, trace, variable
diff --git a/doc/Translate.3 b/doc/Translate.3
index 59a64ea..d434cda 100644
--- a/doc/Translate.3
+++ b/doc/Translate.3
@@ -17,11 +17,12 @@ Tcl_TranslateFileName \- convert file name to native form and replace tilde with
 char *
 \fBTcl_TranslateFileName\fR(\fIinterp\fR, \fIname\fR, \fIbufferPtr\fR)
 .SH ARGUMENTS
-.AS Tcl_DString *bufferPtr
+.AS Tcl_DString *bufferPtr in/out
 .AP Tcl_Interp *interp in
 Interpreter in which to report an error, if any.
-.AP "CONST char" *name in
-File name, which may start with a ``~''.
+.AP "const char" *name in
+File name, which may start with a
+.QW ~ .
 .AP Tcl_DString *bufferPtr in/out
 If needed, this dynamic string is used to store the new file name.
 At the time of the call it should be uninitialized or free.  The
@@ -31,9 +32,18 @@ anything stored here.
 
 .SH DESCRIPTION
 .PP
-This utility procedure translates a file name to a form suitable for
-passing to the local operating system.  It converts network names into
-native form and does tilde substitution.
+This utility procedure translates a file name to a platform-specific form
+which, after being converted to the appropriate encoding, is suitable for
+passing to the local operating system.  In particular, it converts
+network names into native form and does tilde substitution.  
+.PP
+However, with the advent of the newer \fBTcl_FSGetNormalizedPath\fR and
+\fBTcl_GetNativePath\fR, there is no longer any need to use this
+procedure.  In particular, \fBTcl_GetNativePath\fR performs all the
+necessary translation and encoding conversion, is virtual-filesystem
+aware, and caches the native result for faster repeated calls.
+Finally \fBTcl_GetNativePath\fR does not require you to free anything
+afterwards.
 .PP
 If
 \fBTcl_TranslateFileName\fR has to do tilde substitution or translate
@@ -44,7 +54,7 @@ After \fBTcl_TranslateFileName\fR returns a non-NULL result, the caller must
 eventually invoke \fBTcl_DStringFree\fR to free any information
 placed in \fI*bufferPtr\fR.  The caller need not know whether or
 not \fBTcl_TranslateFileName\fR actually used the string;  \fBTcl_TranslateFileName\fR
-initializes \fI*bufferPtr\fR even if it doesn't use it, so the call to
+initializes \fI*bufferPtr\fR even if it does not use it, so the call to
 \fBTcl_DStringFree\fR will be safe in either case.
 .PP
 If an error occurs (e.g. because there was no user by the given
diff --git a/doc/UniCharIsAlpha.3 b/doc/UniCharIsAlpha.3
index 22b81c1..6029b2d 100644
--- a/doc/UniCharIsAlpha.3
+++ b/doc/UniCharIsAlpha.3
@@ -46,6 +46,7 @@ int
 int
 \fBTcl_UniCharIsWordChar\fR(\fIch\fR)
 .SH ARGUMENTS
+.AS int ch
 .AP int ch in
 The Tcl_UniChar to be examined.
 .BE
@@ -61,7 +62,7 @@ with the various routines.
 Note: A Tcl_UniChar is a Unicode character represented as an unsigned,
 fixed-size quantity.
 
-.SH CHARACTER CLASSES
+.SH "CHARACTER CLASSES"
 .PP
 \fBTcl_UniCharIsAlnum\fR tests if the character is an alphanumeric Unicode character.
 .PP
diff --git a/doc/UpVar.3 b/doc/UpVar.3
index 95c4a9a..f1e6fe4 100644
--- a/doc/UpVar.3
+++ b/doc/UpVar.3
@@ -20,30 +20,31 @@ int
 int
 \fBTcl_UpVar2(\fIinterp, frameName, name1, name2, destName, flags\fB)\fR
 .SH ARGUMENTS
-.AS Tcl_VarTraceProc prevClientData
+.AS "const char" *sourceName
 .AP Tcl_Interp *interp in
 Interpreter containing variables;  also used for error reporting.
-.AP "CONST char" *frameName in
+.AP "const char" *frameName in
 Identifies the stack frame containing source variable.
 May have any of the forms accepted by
 the \fBupvar\fR command, such as \fB#0\fR or \fB1\fR.
-.AP "CONST char" *sourceName in
+.AP "const char" *sourceName in
 Name of source variable, in the frame given by \fIframeName\fR.
 May refer to a scalar variable or to an array variable with a
 parenthesized index.
-.AP "CONST char" *destName in
+.AP "const char" *destName in
 Name of destination variable, which is to be linked to source
 variable so that references to \fIdestName\fR
 refer to the other variable.  Must not currently exist except as
 an upvar-ed variable.
 .AP int flags in
-Either TCL_GLOBAL_ONLY or 0;  if non-zero, then \fIdestName\fR is
-a global variable;  otherwise it is a local to the current procedure
-(or global if no procedure is active).
-.AP "CONST char" *name1 in
+One of \fBTCL_GLOBAL_ONLY\fR, \fBTCL_NAMESPACE_ONLY\fR or 0;  if non-zero,
+then \fIdestName\fR is a global or namespace variable;  otherwise it is
+local to the current procedure (or current namespace if no procedure is
+active). 
+.AP "const char" *name1 in
 First part of source variable's name (scalar name, or name of array
 without array index).
-.AP "CONST char" *name2 in
+.AP "const char" *name2 in
 If source variable is an element of an array, gives the index of the element.
 For scalar source variables, is NULL.
 .BE
@@ -61,7 +62,7 @@ element name (by calling \fBTcl_UpVar2\fR).
 The destination variable name is specified in a single string;  it
 may not be an array element.
 .PP
-Both procedures return either TCL_OK or TCL_ERROR, and they
+Both procedures return either \fBTCL_OK\fR or \fBTCL_ERROR\fR, and they
 leave an error message in the interpreter's result if an error occurs.
 .PP
 As with the \fBupvar\fR command, the source variable need not exist;
diff --git a/doc/Utf.3 b/doc/Utf.3
index af472ae..8e39fef 100644
--- a/doc/Utf.3
+++ b/doc/Utf.3
@@ -8,7 +8,7 @@
 .TH Utf 3 "8.1" Tcl "Tcl Library Procedures"
 .BS
 .SH NAME
-Tcl_UniChar, Tcl_UniCharCaseMatch, Tcl_UniCharNcasecmp, Tcl_UniCharToUtf, Tcl_UtfToUniChar, Tcl_UniCharToUtfDString, Tcl_UtfToUniCharDString, Tcl_UniCharLen, Tcl_UniCharNcmp, Tcl_UtfCharComplete, Tcl_NumUtfChars, Tcl_UtfFindFirst, Tcl_UtfFindLast, Tcl_UtfNext, Tcl_UtfPrev, Tcl_UniCharAtIndex, Tcl_UtfAtIndex, Tcl_UtfBackslash \- routines for manipulating UTF-8 strings.
+Tcl_UniChar, Tcl_UniCharCaseMatch, Tcl_UniCharNcasecmp, Tcl_UniCharToUtf, Tcl_UtfToUniChar, Tcl_UniCharToUtfDString, Tcl_UtfToUniCharDString, Tcl_UniCharLen, Tcl_UniCharNcmp, Tcl_UtfCharComplete, Tcl_NumUtfChars, Tcl_UtfFindFirst, Tcl_UtfFindLast, Tcl_UtfNext, Tcl_UtfPrev, Tcl_UniCharAtIndex, Tcl_UtfAtIndex, Tcl_UtfBackslash \- routines for manipulating UTF-8 strings
 .SH SYNOPSIS
 .nf
 \fB#include <tcl.h>\fR
@@ -20,91 +20,91 @@ int
 .sp
 int
 \fBTcl_UtfToUniChar\fR(\fIsrc, chPtr\fR)
-.VS 8.4
 .sp
 char *
-\fBTcl_UniCharToUtfDString\fR(\fIuniStr, numChars, dstPtr\fR)
+\fBTcl_UniCharToUtfDString\fR(\fIuniStr, uniLength, dsPtr\fR)
 .sp
 Tcl_UniChar *
-\fBTcl_UtfToUniCharDString\fR(\fIsrc, len, dstPtr\fR)
-.VE 8.4
+\fBTcl_UtfToUniCharDString\fR(\fIsrc, length, dsPtr\fR)
 .sp
 int
 \fBTcl_UniCharLen\fR(\fIuniStr\fR)
 .sp
 int
-\fBTcl_UniCharNcmp\fR(\fIuniStr, uniStr, num\fR)
-.VS 8.4
+\fBTcl_UniCharNcmp\fR(\fIucs, uct, numChars\fR)
 .sp
 int
-\fBTcl_UniCharNcasecmp\fR(\fIuniStr, uniStr, num\fR)
+\fBTcl_UniCharNcasecmp\fR(\fIucs, uct, numChars\fR)
 .sp
 int
 \fBTcl_UniCharCaseMatch\fR(\fIuniStr, uniPattern, nocase\fR)
-.VE 8.4
 .sp
 int
-\fBTcl_UtfNcmp\fR(\fIsrc, src, num\fR)
+\fBTcl_UtfNcmp\fR(\fIcs, ct, numChars\fR)
 .sp
 int
-\fBTcl_UtfNcasecmp\fR(\fIsrc, src, num\fR)
+\fBTcl_UtfNcasecmp\fR(\fIcs, ct, numChars\fR)
 .sp
 int
-\fBTcl_UtfCharComplete\fR(\fIsrc, len\fR)
+\fBTcl_UtfCharComplete\fR(\fIsrc, length\fR)
 .sp
 int 
-\fBTcl_NumUtfChars\fR(\fIsrc, len\fR)
-.VS 8.4
+\fBTcl_NumUtfChars\fR(\fIsrc, length\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_UtfFindFirst\fR(\fIsrc, ch\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_UtfFindLast\fR(\fIsrc, ch\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_UtfNext\fR(\fIsrc\fR)
 .sp
-CONST char *
+const char *
 \fBTcl_UtfPrev\fR(\fIsrc, start\fR)
-.VE 8.4
 .sp
 Tcl_UniChar
 \fBTcl_UniCharAtIndex\fR(\fIsrc, index\fR)
-.VS 8.4
 .sp
-CONST char *
+const char *
 \fBTcl_UtfAtIndex\fR(\fIsrc, index\fR)
-.VE 8.4
 .sp
 int
 \fBTcl_UtfBackslash\fR(\fIsrc, readPtr, dst\fR)
 .SH ARGUMENTS
-.AS "CONST Tcl_UniChar" numChars in/out
+.AS "const Tcl_UniChar" *uniPattern in/out
 .AP char *buf out
 Buffer in which the UTF-8 representation of the Tcl_UniChar is stored.  At most
-TCL_UTF_MAX bytes are stored in the buffer.
+\fBTCL_UTF_MAX\fR bytes are stored in the buffer.
 .AP int ch in
 The Tcl_UniChar to be converted or examined.
 .AP Tcl_UniChar *chPtr out
 Filled with the Tcl_UniChar represented by the head of the UTF-8 string.
-.AP "CONST char" *src in
+.AP "const char" *src in
 Pointer to a UTF-8 string.
-.AP "CONST Tcl_UniChar" *uniStr in
+.AP "const char" *cs in
+Pointer to a UTF-8 string.
+.AP "const char" *ct in
+Pointer to a UTF-8 string.
+.AP "const Tcl_UniChar" *uniStr in
+A null-terminated Unicode string.
+.AP "const Tcl_UniChar" *ucs in
+A null-terminated Unicode string.
+.AP "const Tcl_UniChar" *uct in
 A null-terminated Unicode string.
-.AP "CONST Tcl_UniChar" *uniPattern in
+.AP "const Tcl_UniChar" *uniPattern in
 A null-terminated Unicode string.
-.AP int len in
+.AP int length in
 The length of the UTF-8 string in bytes (not UTF-8 characters).  If
 negative, all bytes up to the first null byte are used.
-.AP int numChars in
+.AP int uniLength in
 The length of the Unicode string in characters.  Must be greater than or
 equal to 0.
-.AP "Tcl_DString" *dstPtr in/out
-A pointer to a previously-initialized \fBTcl_DString\fR.
-.AP "unsigned long" num in
+.AP "Tcl_DString" *dsPtr in/out
+A pointer to a previously initialized \fBTcl_DString\fR.
+.AP "unsigned long" numChars in
 The number of characters to compare.
-.AP "CONST char" *start in
+.AP "const char" *start in
 Pointer to the beginning of a UTF-8 string.
 .AP int index in
 The index of a character (not byte) in the UTF-8 string.
@@ -113,12 +113,10 @@ If non-NULL, filled with the number of bytes in the backslash sequence,
 including the backslash character.
 .AP char *dst out
 Buffer in which the bytes represented by the backslash sequence are stored.
-At most TCL_UTF_MAX bytes are stored in the buffer.
-.VS 8.4
+At most \fBTCL_UTF_MAX\fR bytes are stored in the buffer.
 .AP int nocase in
 Specifies whether the match should be done case-sensitive (0) or
 case-insensitive (1).
-.VE 8.4
 .BE
 
 .SH DESCRIPTION
@@ -126,7 +124,7 @@ case-insensitive (1).
 These routines convert between UTF-8 strings and Tcl_UniChars.  A
 Tcl_UniChar is a Unicode character represented as an unsigned, fixed-size
 quantity.  A UTF-8 character is a Unicode character represented as
-a varying-length sequence of up to TCL_UTF_MAX bytes.  A multibyte UTF-8
+a varying-length sequence of up to \fBTCL_UTF_MAX\fR bytes.  A multibyte UTF-8
 sequence consists of a lead byte followed by some number of trail bytes.
 .PP
 \fBTCL_UTF_MAX\fR is the maximum number of bytes that it takes to
@@ -138,7 +136,7 @@ in \fIbuf\fR.
 .PP
 \fBTcl_UtfToUniChar\fR reads one UTF-8 character starting at \fIsrc\fR
 and stores it as a Tcl_UniChar in \fI*chPtr\fR.  The return value is the
-number of bytes read from \fIsrc\fR..  The caller must ensure that the
+number of bytes read from \fIsrc\fR.  The caller must ensure that the
 source buffer is long enough such that this routine does not run off the
 end and dereference non-existent or random memory; if the source buffer
 is known to be null-terminated, this will not happen.  If the input is
@@ -147,15 +145,17 @@ byte of \fIsrc\fR in \fI*chPtr\fR as a Tcl_UniChar between 0x0000 and
 0x00ff and return 1.  
 .PP
 \fBTcl_UniCharToUtfDString\fR converts the given Unicode string
-to UTF-8, storing the result in a previously-initialized \fBTcl_DString\fR.
-You must specify the length of the given Unicode string.
+to UTF-8, storing the result in a previously initialized \fBTcl_DString\fR.
+You must specify \fIuniLength\fR, the length of the given Unicode string.
 The return value is a pointer to the UTF-8 representation of the
 Unicode string.  Storage for the return value is appended to the
 end of the \fBTcl_DString\fR.
 .PP
 \fBTcl_UtfToUniCharDString\fR converts the given UTF-8 string to Unicode,
-storing the result in the previously-initialized \fBTcl_DString\fR.
-you may either specify the length of the given UTF-8 string or "-1",
+storing the result in the previously initialized \fBTcl_DString\fR.
+In the argument \fIlength\fR, you may either specify the length of
+the given UTF-8 string in bytes or
+.QW \-1 ,
 in which case \fBTcl_UtfToUniCharDString\fR uses \fBstrlen\fR to
 calculate the length.  The return value is a pointer to the Unicode
 representation of the UTF-8 string.  Storage for the return value
@@ -168,24 +168,22 @@ the number of Unicode characters (not bytes) in that string.
 .PP
 \fBTcl_UniCharNcmp\fR and \fBTcl_UniCharNcasecmp\fR correspond to
 \fBstrncmp\fR and \fBstrncasecmp\fR, respectively, for Unicode characters.
-They accepts two null-terminated Unicode strings and the number of characters
-to compare.  Both strings are assumed to be at least \fIlen\fR characters
+They accept two null-terminated Unicode strings and the number of characters
+to compare.  Both strings are assumed to be at least \fInumChars\fR characters
 long. \fBTcl_UniCharNcmp\fR  compares the two strings character-by-character
 according to the Unicode character ordering.  It returns an integer greater
 than, equal to, or less than 0 if the first string is greater than, equal
 to, or less than the second string respectively.  \fBTcl_UniCharNcasecmp\fR
 is the Unicode case insensitive version.
 .PP
-.VS 8.4
 \fBTcl_UniCharCaseMatch\fR is the Unicode equivalent to
 \fBTcl_StringCaseMatch\fR.  It accepts a null-terminated Unicode string,
 a Unicode pattern, and a boolean value specifying whether the match should
 be case sensitive and returns whether the string matches the pattern.
-.VE 8.4
 .PP
 \fBTcl_UtfNcmp\fR corresponds to \fBstrncmp\fR for UTF-8 strings. It
 accepts two null-terminated UTF-8 strings and the number of characters
-to compare.  (Both strings are assumed to be at least \fIlen\fR
+to compare.  (Both strings are assumed to be at least \fInumChars\fR
 characters long.)  \fBTcl_UtfNcmp\fR compares the two strings
 character-by-character according to the Unicode character ordering.
 It returns an integer greater than, equal to, or less than 0 if the
@@ -198,7 +196,7 @@ differences in case when comparing upper, lower or title case
 characters.
 .PP
 \fBTcl_UtfCharComplete\fR returns 1 if the source UTF-8 string \fIsrc\fR
-of length \fIlen\fR bytes is long enough to be decoded by
+of \fIlength\fR bytes is long enough to be decoded by
 \fBTcl_UtfToUniChar\fR, or 0 otherwise.  This function does not guarantee
 that the UTF-8 string is properly formed.  This routine is used by
 procedures that are operating on a byte at a time and need to know if a
@@ -206,7 +204,7 @@ full Tcl_UniChar has been seen.
 .PP
 \fBTcl_NumUtfChars\fR corresponds to \fBstrlen\fR for UTF-8 strings.  It
 returns the number of Tcl_UniChars that are represented by the UTF-8 string
-\fIsrc\fR.  The length of the source string is \fIlen\fR bytes.  If the
+\fIsrc\fR.  The length of the source string is \fIlength\fR bytes.  If the
 length is negative, all bytes up to the first null byte are used.
 .PP
 \fBTcl_UtfFindFirst\fR corresponds to \fBstrchr\fR for UTF-8 strings.  It
@@ -248,7 +246,7 @@ the return pointer points to the first character in the source string.
 \fBTcl_UtfBackslash\fR is a utility procedure used by several of the Tcl
 commands.  It parses a backslash sequence and stores the properly formed
 UTF-8 character represented by the backslash sequence in the output
-buffer \fIdst\fR.  At most TCL_UTF_MAX bytes are stored in the buffer.
+buffer \fIdst\fR.  At most \fBTCL_UTF_MAX\fR bytes are stored in the buffer.
 \fBTcl_UtfBackslash\fR modifies \fI*readPtr\fR to contain the number
 of bytes in the backslash sequence, including the backslash character.
 The return value is the number of bytes stored in the output buffer.
diff --git a/doc/WrongNumArgs.3 b/doc/WrongNumArgs.3
index 00aa653..2175858 100644
--- a/doc/WrongNumArgs.3
+++ b/doc/WrongNumArgs.3
@@ -15,16 +15,16 @@ Tcl_WrongNumArgs \- generate standard error message for wrong number of argument
 .sp
 \fBTcl_WrongNumArgs\fR(\fIinterp, objc, objv, message\fR)
 .SH ARGUMENTS
-.AS Tcl_Interp "*CONST objv[]"
+.AS "Tcl_Obj *const" *message
 .AP Tcl_Interp interp in
 Interpreter in which error will be reported: error message gets stored
 in its result object.
 .AP int objc in
 Number of leading arguments from \fIobjv\fR to include in error
 message.
-.AP Tcl_Obj "*CONST\ objv[]" in
+.AP "Tcl_Obj *const" objv[] in
 Arguments to command that had the wrong number of arguments.
-.AP "CONST char" *message in
+.AP "const char" *message in
 Additional error information to print after leading arguments
 from \fIobjv\fR.  This typically gives the acceptable syntax
 of the command.  This argument may be NULL.
@@ -39,7 +39,8 @@ standard error message and stores it in the result object of
 \fIinterp\fR.  The message includes the \fIobjc\fR initial
 elements of \fIobjv\fR plus \fImessage\fR.  For example, if
 \fIobjv\fR consists of the values \fBfoo\fR and \fBbar\fR,
-\fIobjc\fR is 1, and \fImessage\fR is ``\fBfileName count\fR''
+\fIobjc\fR is 1, and \fImessage\fR is
+.QW "\fBfileName count\fR"
 then \fIinterp\fR's result object will be set to the following
 string:
 .CS
@@ -61,7 +62,7 @@ subcommand we would like to use the full subcommand name rather than
 the abbreviation.  If the \fBTcl_WrongNumArgs\fR command finds any
 \fIindexObjects\fR in the \fIobjv\fR array it will use the full subcommand
 name in the error message instead of the abbreviated name that was
-originally passed in.  Using the above example, lets assume that
+originally passed in.  Using the above example, let us assume that
 \fIbar\fR is actually an abbreviation for \fIbarfly\fR and the object
 is now an indexObject because it was passed to
 \fBTcl_GetIndexFromObj\fR.  In this case the error message would be:
diff --git a/doc/after.n b/doc/after.n
index dbe0783..21961d3 100644
--- a/doc/after.n
+++ b/doc/after.n
@@ -46,8 +46,9 @@ The delayed command is formed by concatenating all the \fIscript\fR
 arguments in the same fashion as the \fBconcat\fR command.
 The command will be executed at global level (outside the context
 of any Tcl procedure).
-If an error occurs while executing the delayed command then the
-\fBbgerror\fR mechanism is used to report the error.
+If an error occurs while executing the delayed command then 
+the background error will be reported by the command
+registered with \fB interp bgerror\fR.
 The \fBafter\fR command returns an identifier that can be used
 to cancel the delayed command using \fBafter cancel\fR.
 .TP
@@ -76,7 +77,8 @@ loop is entered and there are no events to process.
 The command returns an identifier that can be used
 to cancel the delayed command using \fBafter cancel\fR.
 If an error occurs while executing the script then the
-\fBbgerror\fR mechanism is used to report the error.
+background error will be reported by the command
+registered with \fB interp bgerror\fR.
 .TP
 \fBafter info \fR?\fIid\fR?
 This command returns information about existing event handlers.
@@ -134,7 +136,7 @@ doOneStep
 .CE
 
 .SH "SEE ALSO"
-bgerror(n), concat(n), update(n), vwait(n)
+concat(n), interp(n), update(n), vwait(n)
 
 .SH KEYWORDS
 cancel, delay, idle callback, sleep, time
diff --git a/doc/append.n b/doc/append.n
index 1ff43ee..dc9adbe 100644
--- a/doc/append.n
+++ b/doc/append.n
@@ -18,15 +18,18 @@ append \- Append to variable
 .SH DESCRIPTION
 .PP
 Append all of the \fIvalue\fR arguments to the current value
-of variable \fIvarName\fR.  If \fIvarName\fR doesn't exist,
+of variable \fIvarName\fR.  If \fIvarName\fR does not exist,
 it is given a value equal to the concatenation of all the
 \fIvalue\fR arguments.
 The result of this command is the new value stored in variable
 \fIvarName\fR.
 This command provides an efficient way to build up long
 variables incrementally.
-For example, ``\fBappend a $b\fR'' is much more efficient than
-``\fBset a $a$b\fR'' if \fB$a\fR is long.
+For example,
+.QW "\fBappend a $b\fR"
+is much more efficient than
+.QW "\fBset a $a$b\fR"
+if \fB$a\fR is long.
 .SH EXAMPLE
 Building a string of comma-separated numbers piecemeal using a loop.
 .CS
diff --git a/doc/apply.n b/doc/apply.n
new file mode 100644
index 0000000..8a38aac
--- /dev/null
+++ b/doc/apply.n
@@ -0,0 +1,96 @@
+'\"
+'\" Copyright (c) 2006 Miguel Sofer
+'\" Copyright (c) 2006 Donal K. Fellows
+'\"
+.so man.macros
+.TH apply n "" Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+apply \- Apply an anonymous function
+.SH SYNOPSIS
+\fBapply \fIfunc\fR ?\fIarg1 arg2 ...\fR?
+.BE
+.SH DESCRIPTION
+.PP
+The command \fBapply\fR applies the function \fIfunc\fR to the arguments
+\fIarg1 arg2 ...\fR and returns the result. 
+.PP
+The function \fIfunc\fR is a two element list \fI{args body}\fR or a three
+element list \fI{args body namespace}\fR (as if the
+\fBlist\fR command had been used). 
+The first element \fIargs\fR specifies the formal arguments to
+\fIfunc\fR. The specification of the formal arguments \fIargs\fR
+is shared with the \fBproc\fR command, and is described in detail in the
+corresponding manual page.
+.PP
+The contents of \fIbody\fR are executed by the Tcl interpreter
+after the local variables corresponding to the formal arguments are given
+the values of the actual parameters \fIarg1 arg2 ...\fR.
+When \fIbody\fR is being executed, variable names normally refer to
+local variables, which are created automatically when referenced and
+deleted when \fBapply\fR returns.  One local variable is automatically
+created for each of the function's arguments.
+Global variables can only be accessed by invoking
+the \fBglobal\fR command or the \fBupvar\fR command.
+Namespace variables can only be accessed by invoking
+the \fBvariable\fR command or the \fBupvar\fR command.
+.PP
+The invocation of \fBapply\fR adds a call frame to Tcl's evaluation stack
+(the stack of frames accessed via \fBuplevel\fR). The execution of \fIbody\fR
+proceeds in this call frame, in the namespace given by \fInamespace\fR or
+in the global namespace if none was specified. If given, \fInamespace\fR is
+interpreted relative to the global namespace even if its name does not start
+with
+.QW :: .
+.PP
+The semantics of \fBapply\fR can also be described by:
+.PP
+.CS
+proc apply {fun args} {
+   set len [llength $fun]
+   if {($len < 2) || ($len > 3)} {
+      error "can't interpret \e"$fun\e" as anonymous function"
+   }
+   lassign $fun argList body ns
+   set name ::$ns::[getGloballyUniqueName]
+   set body0 {
+      rename [lindex [info level 0] 0] {}
+   }
+   proc $name $argList ${body0}$body
+   set code [catch {uplevel 1 $name $args} res opt]
+   return -options $opt $res
+}
+.CE
+.SH EXAMPLES
+This shows how to make a simple general command that applies a transformation
+to each element of a list.
+.CS
+proc map {lambda list} {
+   set result {}
+   foreach item $list {
+      lappend result [\fBapply\fR $lambda $item]
+   }
+   return $result
+}
+map {x {return [string length $x]:$x}} {a bb ccc dddd}
+      \fI\(-> 1:a 2:bb 3:ccc 4:dddd\fR
+map {x {expr {$x**2 + 3*$x - 2}}} {-4 -3 -2 -1 0 1 2 3 4}
+      \fI\(-> 2 -2 -4 -4 -2 2 8 16 26\fR
+.CE
+.PP
+The \fBapply\fR command is also useful for defining callbacks for use in the
+\fBtrace\fR command:
+.CS
+set vbl "123abc"
+trace add variable vbl write {\fBapply\fR {{v1 v2 op} {
+   upvar 1 $v1 v
+   puts "updated variable to \e"$v\e""
+}}}
+set vbl 123
+set vbl abc
+.CE
+.SH "SEE ALSO"
+proc(n), uplevel(n)
+.SH KEYWORDS
+argument, procedure, anonymous function
diff --git a/doc/array.n b/doc/array.n
index 7713f8c..e112c23 100644
--- a/doc/array.n
+++ b/doc/array.n
@@ -14,7 +14,6 @@ array \- Manipulate array variables
 .SH SYNOPSIS
 \fBarray \fIoption arrayName\fR ?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 This command performs one of several operations on the
@@ -34,7 +33,7 @@ check, and must have been the return value from a previous
 invocation of \fBarray startsearch\fR.
 This option is particularly useful if an array has an element
 with an empty name, since the return value from
-\fBarray nextelement\fR won't indicate whether the search
+\fBarray nextelement\fR will not indicate whether the search
 has been completed.
 .TP
 \fBarray donesearch \fIarrayName searchId\fR
@@ -58,21 +57,24 @@ array are included in the result.
 If \fIpattern\fR is specified, then only those elements whose names
 match \fIpattern\fR (using the matching rules of
 \fBstring match\fR) are included.
-If \fIarrayName\fR isn't the name of an array variable, or if
+If \fIarrayName\fR is not the name of an array variable, or if
 the array contains no elements, then an empty list is returned.
+If traces on the array modify the list of elements, the elements
+returned are those that exist both before and after the call to
+\fBarray get\fR.
 .TP
 \fBarray names \fIarrayName\fR ?\fImode\fR? ?\fIpattern\fR?
 Returns a list containing the names of all of the elements in
 the array that match \fIpattern\fR.  \fIMode\fR may be one of
-\fB-exact\fR, \fB-glob\fR, or \fB-regexp\fR.  If specified, \fImode\fR
+\fB\-exact\fR, \fB\-glob\fR, or \fB\-regexp\fR.  If specified, \fImode\fR
 designates which matching rules to use to match \fIpattern\fR against
 the names of the elements in the array.  If not specified, \fImode\fR
-defaults to \fB-glob\fR.  See the documentation for \fBstring match\fR
+defaults to \fB\-glob\fR.  See the documentation for \fBstring match\fR
 for information on glob style matching, and the documentation for
 \fBregexp\fR for information on regexp matching.
 If \fIpattern\fR is omitted then the command returns all of
 the element names in the array.  If there are no (matching) elements
-in the array, or if \fIarrayName\fR isn't the name of an array
+in the array, or if \fIarrayName\fR is not the name of an array
 variable, then an empty string is returned.
 .TP
 \fBarray nextelement \fIarrayName searchId\fR
@@ -100,7 +102,7 @@ and \fIlist\fR is empty,
 \fBarray size \fIarrayName\fR
 Returns a decimal string giving the number of elements in the
 array.
-If \fIarrayName\fR isn't the name of an array then 0 is returned.
+If \fIarrayName\fR is not the name of an array then 0 is returned.
 .TP
 \fBarray startsearch \fIarrayName\fR
 This command initializes an element-by-element search through the
@@ -117,59 +119,55 @@ It is currently more efficient and easier to use either the \fBarray
 get\fR or \fBarray names\fR, together with \fBforeach\fR, to iterate
 over all but very large arrays.  See the examples below for how to do
 this.
-.VS 8.4
 .TP
 \fBarray statistics \fIarrayName\fR
 Returns statistics about the distribution of data within the hashtable
 that represents the array.  This information includes the number of
 entries in the table, the number of buckets, and the utilization of
 the buckets.
-.VE 8.4
-.VS 8.3
 .TP
 \fBarray unset \fIarrayName\fR ?\fIpattern\fR?
 Unsets all of the elements in the array that match \fIpattern\fR (using the
-matching rules of \fBstring match\fR).  If \fIarrayName\fR isn't the name
+matching rules of \fBstring match\fR).  If \fIarrayName\fR is not the name
 of an array variable or there are no matching elements in the array, no
 error will be raised.  If \fIpattern\fR is omitted and \fIarrayName\fR is
 an array variable, then the command unsets the entire array.
 The command always returns an empty string.
-.VE 8.3
 .SH EXAMPLES
 .CS
 \fBarray set\fR colorcount {
-    red   1
-    green 5
-    blue  4
-    white 9
+   red   1
+   green 5
+   blue  4
+   white 9
 }
 
 foreach {color count} [\fBarray get\fR colorcount] {
-   puts "Color: $color Count: $count" 
+   puts "Color: $color Count: $count"
 }
- => Color: blue Count: 4
+  \fB\(->\fR Color: blue Count: 4
     Color: white Count: 9
     Color: green Count: 5
     Color: red Count: 1
 
 foreach color [\fBarray names\fR colorcount] {
-   puts "Color: $color Count: $colorcount($color)" 
+   puts "Color: $color Count: $colorcount($color)"
 }
- => Color: blue Count: 4
+  \fB\(->\fR Color: blue Count: 4
     Color: white Count: 9
     Color: green Count: 5
     Color: red Count: 1
 
-foreach color [lsort [array names colorcount]] {
-    puts "Color: $color Count: $colorcount($color)" 
+foreach color [lsort [\fBarray names\fR colorcount]] {
+   puts "Color: $color Count: $colorcount($color)"
 }
- => Color: blue Count: 4
+  \fB\(->\fR Color: blue Count: 4
     Color: green Count: 5
     Color: red Count: 1
     Color: white Count: 9
 
 \fBarray statistics\fR colorcount
- => 4 entries in table, 4 buckets
+  \fB\(->\fR 4 entries in table, 4 buckets
     number of buckets with 0 entries: 1
     number of buckets with 1 entries: 2
     number of buckets with 2 entries: 1
@@ -183,9 +181,7 @@ foreach color [lsort [array names colorcount]] {
     number of buckets with 10 or more entries: 0
     average search distance for entry: 1.2
 .CE
-
 .SH "SEE ALSO"
 list(n), string(n), variable(n), trace(n), foreach(n)
-
 .SH KEYWORDS
 array, element names, search
diff --git a/doc/bgerror.n b/doc/bgerror.n
index 5b42766..cb91351 100644
--- a/doc/bgerror.n
+++ b/doc/bgerror.n
@@ -16,14 +16,27 @@ bgerror \- Command invoked to process background errors
 .BE
 
 .SH DESCRIPTION
+.VS 8.5
+Release 8.5 of Tcl supports the \fBinterp bgerror\fR command,
+which allows applications to register in an interpreter the command
+that will handle background errors in that interpreter.  In older
+releases of Tcl, this level of control was not available, and applications
+could control the handling of background errors only by creating
+a command with the particular command name \fBbgerror\fR in the
+global namespace of an interpreter.  The following documentation
+describes the interface requirements of the \fBbgerror\fR command
+an application might define to retain compatibility with pre-8.5
+releases of Tcl.  Applications intending to support only
+Tcl releases 8.5 and later should simply make use of \fBinterp bgerror\fR.
+.VE 8.5
 .PP
-The \fBbgerror\fR command doesn't exist as built-in part of Tcl.  Instead,
+The \fBbgerror\fR command does not exist as built-in part of Tcl.  Instead,
 individual applications or users can define a \fBbgerror\fR
 command (e.g. as a Tcl procedure) if they wish to handle background
 errors.
 .PP
 A background error is one that occurs in an event handler or some
-other command that didn't originate with the application.
+other command that did not originate with the application.
 For example, if an error occurs while executing a command specified
 with the \fBafter\fR command, then it is a background error.
 For a non-background error, the error can simply be returned up
@@ -34,8 +47,10 @@ unwinding ends in the Tcl library and there is no obvious way for Tcl
 to report the error.
 .PP
 When Tcl detects a background error, it saves information about the
-error and invokes the \fBbgerror\fR command later as an idle event
-handler. Before invoking \fBbgerror\fR, Tcl restores the
+error and invokes a handler command registered by \fBinterp bgerror\fR
+later as an idle event handler.  The default handler command in turn
+calls the \fBbgerror\fR command .
+Before invoking \fBbgerror\fR, Tcl restores the
 \fBerrorInfo\fR and \fBerrorCode\fR variables to their values at the
 time the error occurred, then it invokes \fBbgerror\fR with the error
 message as its only argument.  Tcl assumes that the application has
@@ -54,22 +69,6 @@ error, in the order they occurred.  However, if \fBbgerror\fR returns
 with a break exception, then any remaining errors are skipped without
 calling \fBbgerror\fR.
 .PP
-Tcl has no default implementation for \fBbgerror\fR. However, in
-applications using Tk there is a default \fBbgerror\fR procedure which
-posts a dialog box containing the error message and offers the user a
-chance to see a stack trace showing where the error occurred.  In
-addition to allowing the user to view the stack trace, the dialog
-provides an additional application configurable button which may be
-used, for example, to save the stack trace to a file.  By default,
-this is the behavior associated with that button.  This behavior can
-be redefined by setting the option database values
-\fB*ErrorDialog.function.text\fR, to specify the caption for the
-function button, and \fB*ErrorDialog.function.command\fR, to specify
-the command to be run.  The text of the stack trace is appended to the
-command when it is evaluated.  If either of these options is set to
-the empty string, then the additional button will not be displayed in
-the dialog.
-.PP
 If you are writing code that will be used by others as part of a
 package or other kind of library, consider avoiding \fBbgerror\fR.
 The reason for this is that the application programmer may also want
@@ -87,7 +86,7 @@ proc bgerror {message} {
 .CE
 
 .SH "SEE ALSO"
-after(n), tclvars(n)
+after(n), interp(n), tclvars(n)
 
 .SH KEYWORDS
 background error, reporting
diff --git a/doc/binary.n b/doc/binary.n
index fbe1a8c..6b2150e 100644
--- a/doc/binary.n
+++ b/doc/binary.n
@@ -15,17 +15,15 @@ binary \- Insert and extract fields from binary strings
 .br
 \fBbinary scan \fIstring formatString \fR?\fIvarName varName ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 This command provides facilities for manipulating binary data.  The
 first form, \fBbinary format\fR, creates a binary string from normal
-Tcl values.  For example, given the values 16 and 22, on a 32 bit
+Tcl values.  For example, given the values 16 and 22, on a 32-bit
 architecture, it might produce an 8-byte binary string consisting of
 two 4-byte integers, one for each of the numbers.  The second form of
 the command, \fBbinary scan\fR, does the opposite: it extracts data
 from a binary string and returns it as ordinary Tcl string values.
-
 .SH "BINARY FORMAT"
 .PP
 The \fBbinary format\fR command generates a binary string whose layout
@@ -34,7 +32,8 @@ the additional arguments.  The resulting binary value is returned.
 .PP
 The \fIformatString\fR consists of a sequence of zero or more field
 specifiers separated by zero or more spaces.  Each field specifier is
-a single type character followed by an optional numeric \fIcount\fR.
+a single type character followed by an optional flag character followed
+by an optional numeric \fIcount\fR.
 Most field specifiers consume one argument to obtain the value to be
 formatted.  The type character specifies how the value is to be
 formatted.  The \fIcount\fR typically indicates how many items of the
@@ -42,12 +41,13 @@ specified type are taken from the value.  If present, the \fIcount\fR
 is a non-negative decimal integer or \fB*\fR, which normally indicates
 that all of the items in the value are to be used.  If the number of
 arguments does not match the number of fields in the format string
-that consume arguments, then an error is generated.
+that consume arguments, then an error is generated. The flag character
+is ignored for for \fBbinary format\fR.
 .PP
 Here is a small example to clarify the relation between the field
 specifiers and the arguments:
 .CS
-\fBbinary format d3d {1.0 2.0 3.0 4.0} 0.1\fR
+\fBbinary format\fR d3d {1.0 2.0 3.0 4.0} 0.1
 .CE
 .PP
 The first argument is a list of four numbers, but because of the count
@@ -62,13 +62,14 @@ to just after the last byte stored.  The cursor is initially at
 position 0 at the beginning of the data.  The type may be any one of
 the following characters:
 .IP \fBa\fR 5
-Stores a character string of length \fIcount\fR in the output string.
+Stores a byte string of length \fIcount\fR in the output string.
 Every character is taken as modulo 256 (i.e. the low byte of every
 character is used, and the high byte discarded) so when storing
-character strings not wholly expressible using the characters \\u0000-\\u00ff,
-the \fBencoding convertto\fR command should be used
-first if this truncation is not desired (i.e. if the characters are
-not part of the ISO 8859-1 character set.)
+character strings not wholly expressible using the characters \eu0000-\eu00ff,
+the \fBencoding convertto\fR command should be used first to change
+the string into an external representation
+if this truncation is not desired (i.e. if the characters are
+not part of the ISO 8859\-1 character set.)
 If \fIarg\fR has fewer than \fIcount\fR bytes, then additional zero
 bytes are used to pad out the field.  If \fIarg\fR is longer than the
 specified length, the extra characters will be ignored.  If
@@ -77,16 +78,33 @@ formatted.  If \fIcount\fR is omitted, then one character will be
 formatted.  For example,
 .RS
 .CS
-\fBbinary format a7a*a alpha bravo charlie\fR
+\fBbinary format\fR a7a*a alpha bravo charlie
 .CE
-will return a string equivalent to \fBalpha\\000\\000bravoc\fR.
+will return a string equivalent to \fBalpha\e000\e000bravoc\fR,
+.CS
+\fBbinary format\fR a* [encoding convertto utf-8 \eu20ac]
+.CE
+will return a string equivalent to \fB\e342\e202\e254\fR (which is the
+UTF-8 byte sequence for a Euro-currency character) and
+.CS
+\fBbinary format\fR a* [encoding convertto iso8859-15 \eu20ac]
+.CE
+will return a string equivalent to \fB\e244\fR (which is the ISO
+8859\-15 byte sequence for a Euro-currency character). Contrast these
+last two with:
+.CS
+\fBbinary format\fR a* \eu20ac
+.CE
+which returns a string equivalent to \fB\e254\fR (i.e. \fB\exac\fR) by
+truncating the high-bits of the character, and which is probably not
+what is desired.
 .RE
 .IP \fBA\fR 5
 This form is the same as \fBa\fR except that spaces are used for
 padding instead of nulls.  For example,
 .RS
 .CS
-\fBbinary format A6A*A alpha bravo charlie\fR
+\fBbinary format\fR A6A*A alpha bravo charlie
 .CE
 will return \fBalpha bravoc\fR.
 .RE
@@ -105,25 +123,26 @@ does not end at a byte boundary, the remaining bits of the last byte
 will be zeros.  For example,
 .RS
 .CS
-\fBbinary format b5b* 11100 111000011010\fR
+\fBbinary format\fR b5b* 11100 111000011010
 .CE
-will return a string equivalent to \fB\\x07\\x87\\x05\fR.
+will return a string equivalent to \fB\ex07\ex87\ex05\fR.
 .RE
 .IP \fBB\fR 5
 This form is the same as \fBb\fR except that the bits are stored in
 high-to-low order within each byte.  For example,
 .RS
 .CS
-\fBbinary format B5B* 11100 111000011010\fR
+\fBbinary format\fR B5B* 11100 111000011010
 .CE
-will return a string equivalent to \fB\\xe0\\xe1\\xa0\fR.
+will return a string equivalent to \fB\exe0\exe1\exa0\fR.
 .RE
-.IP \fBh\fR 5
-Stores a string of \fIcount\fR hexadecimal digits in low-to-high
+.IP \fBH\fR 5
+Stores a string of \fIcount\fR hexadecimal digits in high-to-low
 within each byte in the output string.  \fIArg\fR must contain a
-sequence of characters in the set ``0123456789abcdefABCDEF''.  The
-resulting bytes are emitted in first to last order with the hex digits
-being formatted in low-to-high order within each byte.  If \fIarg\fR
+sequence of characters in the set
+.QW 0123456789abcdefABCDEF .
+The resulting bytes are emitted in first to last order with the hex digits
+being formatted in high-to-low order within each byte.  If \fIarg\fR
 has fewer than \fIcount\fR digits, then zeros will be used for the
 remaining digits.  If \fIarg\fR has more than the specified number of
 digits, the extra digits will be ignored.  If \fIcount\fR is
@@ -133,37 +152,36 @@ number of digits formatted does not end at a byte boundary, the
 remaining bits of the last byte will be zeros.  For example,
 .RS
 .CS
-\fBbinary format h3h* AB def\fR
+\fBbinary format\fR H3H*H2 ab DEF 987
 .CE
-will return a string equivalent to \fB\\xba\\x00\\xed\\x0f\fR.
+will return a string equivalent to \fB\exab\ex00\exde\exf0\ex98\fR.
 .RE
-.IP \fBH\fR 5
-This form is the same as \fBh\fR except that the digits are stored in
-high-to-low order within each byte.  For example,
+.IP \fBh\fR 5
+This form is the same as \fBH\fR except that the digits are stored in
+low-to-high order within each byte. This is seldom required. For example,
 .RS
 .CS
-\fBbinary format H3H* ab DEF\fR
+\fBbinary format\fR h3h*h2 AB def 987
 .CE
-will return a string equivalent to \fB\\xab\\x00\\xde\\xf0\fR.
+will return a string equivalent to \fB\exba\ex00\exed\ex0f\ex89\fR.
 .RE
 .IP \fBc\fR 5
 Stores one or more 8-bit integer values in the output string.  If no
 \fIcount\fR is specified, then \fIarg\fR must consist of an integer
-value; otherwise \fIarg\fR must consist of a list containing at least
-\fIcount\fR integer elements.  The low-order 8 bits of each integer
+value. If \fIcount\fR is specified, \fIarg\fR must consist of a list
+containing at least that many integers. The low-order 8 bits of each integer
 are stored as a one-byte value at the cursor position.  If \fIcount\fR
-is \fB*\fR, then all of the integers in the list are formatted.  If
-the number of elements in the list is fewer than \fIcount\fR, then an
-error is generated.  If the number of elements in the list is greater
+is \fB*\fR, then all of the integers in the list are formatted. If the
+number of elements in the list is greater
 than \fIcount\fR, then the extra elements are ignored.  For example,
 .RS
 .CS
-\fBbinary format c3cc* {3 -3 128 1} 260 {2 5}\fR
+\fBbinary format\fR c3cc* {3 -3 128 1} 260 {2 5}
 .CE
 will return a string equivalent to
-\fB\\x03\\xfd\\x80\\x04\\x02\\x05\fR, whereas
+\fB\ex03\exfd\ex80\ex04\ex02\ex05\fR, whereas
 .CS
-\fBbinary format c {2 5}\fR
+\fBbinary format\fR c {2 5}
 .CE
 will generate an error.
 .RE
@@ -175,10 +193,10 @@ the cursor position with the least significant byte stored first.  For
 example,
 .RS
 .CS
-\fBbinary format s3 {3 -3 258 1}\fR
+\fBbinary format\fR s3 {3 -3 258 1}
 .CE
 will return a string equivalent to 
-\fB\\x03\\x00\\xfd\\xff\\x02\\x01\fR.
+\fB\ex03\ex00\exfd\exff\ex02\ex01\fR.
 .RE
 .IP \fBS\fR 5
 This form is the same as \fBs\fR except that it stores one or more
@@ -186,11 +204,19 @@ This form is the same as \fBs\fR except that it stores one or more
 example,
 .RS
 .CS
-\fBbinary format S3 {3 -3 258 1}\fR
+\fBbinary format\fR S3 {3 -3 258 1}
 .CE
 will return a string equivalent to 
-\fB\\x00\\x03\\xff\\xfd\\x01\\x02\fR.
-.RE
+\fB\ex00\ex03\exff\exfd\ex01\ex02\fR.
+.RE
+.IP \fBt\fR 5
+.VS 8.5
+This form (mnemonically \fItiny\fR) is the same as \fBs\fR and \fBS\fR
+except that it stores the 16-bit integers in the output string in the
+native byte order of the machine where the Tcl script is running.
+To determine what the native byte order of the machine is, refer to
+the \fBbyteOrder\fR element of the \fBtcl_platform\fR array.
+.VE 8.5
 .IP \fBi\fR 5
 This form is the same as \fBc\fR except that it stores one or more
 32-bit integers in little-endian byte order in the output string.  The
@@ -199,10 +225,10 @@ the cursor position with the least significant byte stored first.  For
 example,
 .RS
 .CS
-\fBbinary format i3 {3 -3 65536 1}\fR
+\fBbinary format\fR i3 {3 -3 65536 1}
 .CE
 will return a string equivalent to 
-\fB\\x03\\x00\\x00\\x00\\xfd\\xff\\xff\\xff\\x00\\x00\\x01\\x00\fR
+\fB\ex03\ex00\ex00\ex00\exfd\exff\exff\exff\ex00\ex00\ex01\ex00\fR
 .RE
 .IP \fBI\fR 5
 This form is the same as \fBi\fR except that it stores one or more one
@@ -210,13 +236,21 @@ or more 32-bit integers in big-endian byte order in the output string.
 For example,
 .RS
 .CS
-\fBbinary format I3 {3 -3 65536 1}\fR
+\fBbinary format\fR I3 {3 -3 65536 1}
 .CE
 will return a string equivalent to 
-\fB\\x00\\x00\\x00\\x03\\xff\\xff\\xff\\xfd\\x00\\x01\\x00\\x00\fR
-.RE
+\fB\ex00\ex00\ex00\ex03\exff\exff\exff\exfd\ex00\ex01\ex00\ex00\fR
+.RE
+.IP \fBn\fR 5
+.VS 8.5
+This form (mnemonically \fInumber\fR or \fInormal\fR) is the same as
+\fBi\fR and \fBI\fR except that it stores the 32-bit integers in the
+output string in the native byte order of the machine where the Tcl
+script is running.
+To determine what the native byte order of the machine is, refer to
+the \fBbyteOrder\fR element of the \fBtcl_platform\fR array.
+.VE 8.5
 .IP \fBw\fR 5
-.VS 8.4
 This form is the same as \fBc\fR except that it stores one or more
 64-bit integers in little-endian byte order in the output string.  The
 low-order 64-bits of each integer are stored as an eight-byte value at
@@ -224,7 +258,7 @@ the cursor position with the least significant byte stored first.  For
 example,
 .RS
 .CS
-\fBbinary format w 7810179016327718216\fR
+\fBbinary format\fR w 7810179016327718216
 .CE
 will return the string \fBHelloTcl\fR
 .RE
@@ -234,14 +268,22 @@ or more 64-bit integers in big-endian byte order in the output string.
 For example,
 .RS
 .CS
-\fBbinary format Wc 4785469626960341345 110\fR
+\fBbinary format\fR Wc 4785469626960341345 110
 .CE
 will return the string \fBBigEndian\fR
-.VE
 .RE
+.IP \fBm\fR 5
+.VS 8.5
+This form (mnemonically the mirror of \fBw\fR) is the same as \fBw\fR
+and \fBW\fR except that it stores the 64-bit integers in the output
+string in the native byte order of the machine where the Tcl script is
+running.
+To determine what the native byte order of the machine is, refer to
+the \fBbyteOrder\fR element of the \fBtcl_platform\fR array.
+.VE 8.5
 .IP \fBf\fR 5
 This form is the same as \fBc\fR except that it stores one or more one
-or more single-precision floating in the machine's native
+or more single-precision floating point numbers in the machine's native
 representation in the output string.  This representation is not
 portable across architectures, so it should not be used to communicate
 floating point numbers across the network.  The size of a floating
@@ -249,28 +291,54 @@ point number may vary across architectures, so the number of bytes
 that are generated may vary.  If the value overflows the
 machine's native representation, then the value of FLT_MAX
 as defined by the system will be used instead.  Because Tcl uses
-double-precision floating-point numbers internally, there may be some
+double-precision floating point numbers internally, there may be some
 loss of precision in the conversion to single-precision.  For example,
 on a Windows system running on an Intel Pentium processor,
 .RS
 .CS
-\fBbinary format f2 {1.6 3.4}\fR
+\fBbinary format\fR f2 {1.6 3.4}
 .CE
 will return a string equivalent to 
-\fB\\xcd\\xcc\\xcc\\x3f\\x9a\\x99\\x59\\x40\fR.
-.RE
+\fB\excd\excc\excc\ex3f\ex9a\ex99\ex59\ex40\fR.
+.RE
+.IP \fBr\fR 5
+.VS 8.5
+This form (mnemonically \fIreal\fR) is the same as \fBf\fR except that
+it stores the single-precision floating point numbers in little-endian
+order.  This conversion only produces meaningful output when used on
+machines which use the IEEE floating point representation (very
+common, but not universal.)
+.VE 8.5
+.IP \fBR\fR 5
+.VS 8.5
+This form is the same as \fBr\fR except that it stores the
+single-precision floating point numbers in big-endian order.
+.VE 8.5
 .IP \fBd\fR 5
 This form is the same as \fBf\fR except that it stores one or more one
-or more double-precision floating in the machine's native
+or more double-precision floating point numbers in the machine's native
 representation in the output string.  For example, on a
 Windows system running on an Intel Pentium processor,
 .RS
 .CS
-\fBbinary format d1 {1.6}\fR
+\fBbinary format\fR d1 {1.6}
 .CE
 will return a string equivalent to 
-\fB\\x9a\\x99\\x99\\x99\\x99\\x99\\xf9\\x3f\fR.
-.RE
+\fB\ex9a\ex99\ex99\ex99\ex99\ex99\exf9\ex3f\fR.
+.RE
+.IP \fBq\fR 5
+.VS 8.5
+This form (mnemonically the mirror of \fBd\fR) is the same as \fBd\fR
+except that it stores the double-precision floating point numbers in
+little-endian order.  This conversion only produces meaningful output
+when used on machines which use the IEEE floating point representation
+(very common, but not universal.)
+.VE 8.5
+.IP \fBQ\fR 5
+.VS 8.5
+This form is the same as \fBq\fR except that it stores the
+double-precision floating point numbers in big-endian order.
+.VE 8.5
 .IP \fBx\fR 5
 Stores \fIcount\fR null bytes in the output string.  If \fIcount\fR is
 not specified, stores one null byte.  If \fIcount\fR is \fB*\fR,
@@ -278,9 +346,9 @@ generates an error.  This type does not consume an argument.  For
 example,
 .RS
 .CS
-\fBbinary format a3xa3x2a3 abc def ghi\fR
+\fBbinary format\fR a3xa3x2a3 abc def ghi
 .CE
-will return a string equivalent to \fBabc\\000def\\000\\000ghi\fR.
+will return a string equivalent to \fBabc\e000def\e000\e000ghi\fR.
 .RE
 .IP \fBX\fR 5
 Moves the cursor back \fIcount\fR bytes in the output string.  If
@@ -291,7 +359,7 @@ omitted then the cursor is moved back one byte.  This type does not
 consume an argument.  For example,
 .RS
 .CS
-\fBbinary format a3X*a3X2a3 abc def ghi\fR
+\fBbinary format\fR a3X*a3X2a3 abc def ghi
 .CE
 will return \fBdghi\fR.
 .RE
@@ -306,16 +374,17 @@ the output string.  If \fIcount\fR is omitted, then an error will be
 generated.  This type does not consume an argument. For example,
 .RS
 .CS
-\fBbinary format a5@2a1@*a3@10a1 abcde f ghi j\fR
+\fBbinary format\fR a5@2a1@*a3@10a1 abcde f ghi j
 .CE
-will return \fBabfdeghi\\000\\000j\fR.
+will return \fBabfdeghi\e000\e000j\fR.
 .RE
-
 .SH "BINARY SCAN"
 .PP
 The \fBbinary scan\fR command parses fields from a binary string,
 returning the number of conversions performed.  \fIString\fR gives the
-input to be parsed and \fIformatString\fR indicates how to parse it.
+input bytes to be parsed (one byte per character, and characters not
+representable as a byte have their high bits chopped)
+and \fIformatString\fR indicates how to parse it.
 Each \fIvarName\fR gives the name of a variable; when a field is
 scanned from \fIstring\fR the result is assigned to the corresponding
 variable.
@@ -323,7 +392,8 @@ variable.
 As with \fBbinary format\fR, the \fIformatString\fR consists of a
 sequence of zero or more field specifiers separated by zero or more
 spaces.  Each field specifier is a single type character followed by
-an optional numeric \fIcount\fR.  Most field specifiers consume one
+an optional flag character followed by an optional numeric \fIcount\fR.
+Most field specifiers consume one
 argument to obtain the variable into which the scanned values should
 be placed.  The type character specifies how the binary data is to be
 interpreted.  The \fIcount\fR typically indicates how many items of
@@ -335,13 +405,16 @@ position to satisfy the current field specifier, then the
 corresponding variable is left untouched and \fBbinary scan\fR returns
 immediately with the number of variables that were set.  If there are
 not enough arguments for all of the fields in the format string that
-consume arguments, then an error is generated.
+consume arguments, then an error is generated. The flag character
+.QW u
+may be given to cause some types to be read as unsigned values. The flag
+is accepted for all field types but is ignored for non-integer fields.
 .PP
 A similar example as with \fBbinary format\fR should explain the
 relation between field specifiers and arguments in case of the binary
 scan subcommand:
 .CS
-\fBbinary scan $bytes s3s first second\fR
+\fBbinary scan\fR $bytes s3s first second
 .CE
 .PP
 This command (provided the binary string in the variable \fIbytes\fR
@@ -352,31 +425,33 @@ integers), no assignment to \fIsecond\fR will be made, and if
 \fIbytes\fR contains fewer than 6 bytes (i.e. three 2-byte integers),
 no assignment to \fIfirst\fR will be made.  Hence:
 .CS
-\fBputs [binary scan abcdefg s3s first second]\fR
-\fBputs $first\fR
-\fBputs $second\fR
+puts [\fBbinary scan\fR abcdefg s3s first second]
+puts $first
+puts $second
 .CE
 will print (assuming neither variable is set previously):
 .CS
-\fB1\fR
-\fB25185 25699 26213\fR
-\fIcan't read "second": no such variable\fR
+1
+25185 25699 26213
+can't read "second": no such variable
 .CE
 .PP
-It is \fBimportant\fR to note that the \fBc\fR, \fBs\fR, and \fBS\fR
+It is \fIimportant\fR to note that the \fBc\fR, \fBs\fR, and \fBS\fR
 (and \fBi\fR and \fBI\fR on 64bit systems) will be scanned into
 long data size values.  In doing this, values that have their high
 bit set (0x80 for chars, 0x8000 for shorts, 0x80000000 for ints),
 will be sign extended.  Thus the following will occur:
 .CS
-\fBset signShort [binary format s1 0x8000]\fR
-\fBbinary scan $signShort s1 val; \fI# val == 0xFFFF8000\fR
+set signShort [\fBbinary format\fR s1 0x8000]
+\fBbinary scan\fR $signShort s1 val; \fI# val == 0xFFFF8000\fR
 .CE
-If you want to produce an unsigned value, then you can mask the return 
-value to the desired size.  For example, to produce an unsigned short 
-value:
+If you require unsigned values you can include the
+.QW u
+flag character following
+the field type. For example, to read an unsigned short value:
 .CS
-\fBset val [expr {$val & 0xFFFF}]; \fI# val == 0x8000\fR
+set signShort [\fBbinary format\fR s1 0x8000]
+\fBbinary scan\fR $signShort su1 val; \fI# val == 0x00008000\fR
 .CE
 .PP
 Each type-count pair moves an imaginary cursor through the binary data,
@@ -384,116 +459,128 @@ reading bytes from the current position.  The cursor is initially
 at position 0 at the beginning of the data.  The type may be any one of
 the following characters:
 .IP \fBa\fR 5
-The data is a character string of length \fIcount\fR.  If \fIcount\fR
+The data is a byte string of length \fIcount\fR.  If \fIcount\fR
 is \fB*\fR, then all of the remaining bytes in \fIstring\fR will be
 scanned into the variable.  If \fIcount\fR is omitted, then one
-character will be scanned.
-All characters scanned will be interpreted as being in the
-range \\u0000-\\u00ff so the \fBencoding convertfrom\fR command might be
-needed if the string is not an ISO 8859\-1 string.
+byte will be scanned.
+All bytes scanned will be interpreted as being characters in the
+range \eu0000-\eu00ff so the \fBencoding convertfrom\fR command will be
+needed if the string is not a binary string or a string encoded in ISO
+8859\-1.
 For example,
 .RS
 .CS
-\fBbinary scan abcde\\000fghi a6a10 var1 var2\fR
+\fBbinary scan\fR abcde\e000fghi a6a10 var1 var2
+.CE
+will return \fB1\fR with the string equivalent to \fBabcde\e000\fR
+stored in \fIvar1\fR and \fIvar2\fR left unmodified, and
+.CS
+\fBbinary scan\fR \e342\e202\e254 a* var1
+set var2 [encoding convertfrom utf-8 $var1]
 .CE
-will return \fB1\fR with the string equivalent to \fBabcde\\000\fR
-stored in \fBvar1\fR and \fBvar2\fR left unmodified.
+will store a Euro-currency character in \fIvar2\fR.
 .RE
 .IP \fBA\fR 5
 This form is the same as \fBa\fR, except trailing blanks and nulls are stripped from
 the scanned value before it is stored in the variable.  For example,
 .RS
 .CS
-\fBbinary scan "abc efghi  \\000" A* var1\fR
+\fBbinary scan\fR "abc efghi  \e000" A* var1
 .CE
-will return \fB1\fR with \fBabc efghi\fR stored in \fBvar1\fR.
+will return \fB1\fR with \fBabc efghi\fR stored in \fIvar1\fR.
 .RE
 .IP \fBb\fR 5
 The data is turned into a string of \fIcount\fR binary digits in
-low-to-high order represented as a sequence of ``1'' and ``0''
+low-to-high order represented as a sequence of
+.QW 1
+and
+.QW 0
 characters.  The data bytes are scanned in first to last order with
 the bits being taken in low-to-high order within each byte.  Any extra
 bits in the last byte are ignored.  If \fIcount\fR is \fB*\fR, then
-all of the remaining bits in \fBstring\fR will be scanned.  If
+all of the remaining bits in \fIstring\fR will be scanned.  If
 \fIcount\fR is omitted, then one bit will be scanned.  For example,
 .RS
 .CS
-\fBbinary scan \\x07\\x87\\x05 b5b* var1 var2\fR
+\fBbinary scan\fR \ex07\ex87\ex05 b5b* var1 var2
 .CE
-will return \fB2\fR with \fB11100\fR stored in \fBvar1\fR and
-\fB1110000110100000\fR stored in \fBvar2\fR.
+will return \fB2\fR with \fB11100\fR stored in \fIvar1\fR and
+\fB1110000110100000\fR stored in \fIvar2\fR.
 .RE
 .IP \fBB\fR 5
 This form is the same as \fBb\fR, except the bits are taken in
 high-to-low order within each byte.  For example,
 .RS
 .CS
-\fBbinary scan \\x70\\x87\\x05 B5B* var1 var2\fR
+\fBbinary scan\fR \ex70\ex87\ex05 B5B* var1 var2
 .CE
-will return \fB2\fR with \fB01110\fR stored in \fBvar1\fR and
-\fB1000011100000101\fR stored in \fBvar2\fR.
+will return \fB2\fR with \fB01110\fR stored in \fIvar1\fR and
+\fB1000011100000101\fR stored in \fIvar2\fR.
 .RE
-.IP \fBh\fR 5
+.IP \fBH\fR 5
 The data is turned into a string of \fIcount\fR hexadecimal digits in
-low-to-high order represented as a sequence of characters in the set
-``0123456789abcdef''.  The data bytes are scanned in first to last
-order with the hex digits being taken in low-to-high order within each
-byte.  Any extra bits in the last byte are ignored.  If \fIcount\fR
-is \fB*\fR, then all of the remaining hex digits in \fBstring\fR will be
-scanned.  If \fIcount\fR is omitted, then one hex digit will be
-scanned.  For example,
+high-to-low order represented as a sequence of characters in the set
+.QW 0123456789abcdef .
+The data bytes are scanned in first to last
+order with the hex digits being taken in high-to-low order within each
+byte. Any extra bits in the last byte are ignored. If \fIcount\fR is
+\fB*\fR, then all of the remaining hex digits in \fIstring\fR will be
+scanned. If \fIcount\fR is omitted, then one hex digit will be
+scanned. For example,
 .RS
 .CS
-\fBbinary scan \\x07\\x86\\x05 h3h* var1 var2\fR
+\fBbinary scan\fR \ex07\exC6\ex05\ex1f\ex34 H3H* var1 var2
 .CE
-will return \fB2\fR with \fB706\fR stored in \fBvar1\fR and
-\fB50\fR stored in \fBvar2\fR.
+will return \fB2\fR with \fB07c\fR stored in \fIvar1\fR and
+\fB051f34\fR stored in \fIvar2\fR.
 .RE
-.IP \fBH\fR 5
-This form is the same as \fBh\fR, except the digits are taken in
-high-to-low order within each byte.  For example,
+.IP \fBh\fR 5
+This form is the same as \fBH\fR, except the digits are taken in
+reverse (low-to-high) order within each byte. For example,
 .RS
 .CS
-\fBbinary scan \\x07\\x86\\x05 H3H* var1 var2\fR
+\fBbinary scan\fR \ex07\ex86\ex05\ex12\ex34 h3h* var1 var2
 .CE
-will return \fB2\fR with \fB078\fR stored in \fBvar1\fR and
-\fB05\fR stored in \fBvar2\fR.
+will return \fB2\fR with \fB706\fR stored in \fIvar1\fR and
+\fB502143\fR stored in \fIvar2\fR.
 .RE
+Note that most code that wishes to parse the hexadecimal digits from
+multiple bytes in order should use the \fBH\fR format.
 .IP \fBc\fR 5
 The data is turned into \fIcount\fR 8-bit signed integers and stored
 in the corresponding variable as a list. If \fIcount\fR is \fB*\fR,
-then all of the remaining bytes in \fBstring\fR will be scanned.  If
+then all of the remaining bytes in \fIstring\fR will be scanned.  If
 \fIcount\fR is omitted, then one 8-bit integer will be scanned.  For
 example,
 .RS
 .CS
-\fBbinary scan \\x07\\x86\\x05 c2c* var1 var2\fR
+\fBbinary scan\fR \ex07\ex86\ex05 c2c* var1 var2
 .CE
-will return \fB2\fR with \fB7 -122\fR stored in \fBvar1\fR and \fB5\fR
-stored in \fBvar2\fR.  Note that the integers returned are signed, but
+will return \fB2\fR with \fB7 -122\fR stored in \fIvar1\fR and \fB5\fR
+stored in \fIvar2\fR.  Note that the integers returned are signed, but
 they can be converted to unsigned 8-bit quantities using an expression
 like:
 .CS
-\fBexpr { $num & 0xff }\fR
+set num [expr { $num & 0xff }]
 .CE
 .RE
 .IP \fBs\fR 5
 The data is interpreted as \fIcount\fR 16-bit signed integers
 represented in little-endian byte order.  The integers are stored in
 the corresponding variable as a list.  If \fIcount\fR is \fB*\fR, then
-all of the remaining bytes in \fBstring\fR will be scanned.  If
+all of the remaining bytes in \fIstring\fR will be scanned.  If
 \fIcount\fR is omitted, then one 16-bit integer will be scanned.  For
 example,
 .RS
 .CS
-\fBbinary scan \\x05\\x00\\x07\\x00\\xf0\\xff s2s* var1 var2\fR
+\fBbinary scan\fR \ex05\ex00\ex07\ex00\exf0\exff s2s* var1 var2
 .CE
-will return \fB2\fR with \fB5 7\fR stored in \fBvar1\fR and \fB-16\fR
-stored in \fBvar2\fR.  Note that the integers returned are signed, but
+will return \fB2\fR with \fB5 7\fR stored in \fIvar1\fR and \fB\-16\fR
+stored in \fIvar2\fR.  Note that the integers returned are signed, but
 they can be converted to unsigned 16-bit quantities using an expression
 like:
 .CS
-\fBexpr { $num & 0xffff }\fR
+set num [expr { $num & 0xffff }]
 .CE
 .RE
 .IP \fBS\fR 5
@@ -502,28 +589,37 @@ as \fIcount\fR 16-bit signed integers represented in big-endian byte
 order.  For example,
 .RS
 .CS
-\fBbinary scan \\x00\\x05\\x00\\x07\\xff\\xf0 S2S* var1 var2\fR
+\fBbinary scan\fR \ex00\ex05\ex00\ex07\exff\exf0 S2S* var1 var2
 .CE
-will return \fB2\fR with \fB5 7\fR stored in \fBvar1\fR and \fB-16\fR
-stored in \fBvar2\fR. 
+will return \fB2\fR with \fB5 7\fR stored in \fIvar1\fR and \fB\-16\fR
+stored in \fIvar2\fR. 
 .RE
+.IP \fBt\fR 5
+.VS 8.5
+The data is interpreted as \fIcount\fR 16-bit signed integers
+represented in the native byte order of the machine running the Tcl
+script.  It is otherwise identical to \fBs\fR and \fBS\fR.
+To determine what the native byte order of the machine is, refer to
+the \fBbyteOrder\fR element of the \fBtcl_platform\fR array.
+.VE 8.5
 .IP \fBi\fR 5
 The data is interpreted as \fIcount\fR 32-bit signed integers
 represented in little-endian byte order.  The integers are stored in
 the corresponding variable as a list.  If \fIcount\fR is \fB*\fR, then
-all of the remaining bytes in \fBstring\fR will be scanned.  If
+all of the remaining bytes in \fIstring\fR will be scanned.  If
 \fIcount\fR is omitted, then one 32-bit integer will be scanned.  For
 example,
 .RS
 .CS
-\fBbinary scan \\x05\\x00\\x00\\x00\\x07\\x00\\x00\\x00\\xf0\\xff\\xff\\xff i2i* var1 var2\fR
+set str \ex05\ex00\ex00\ex00\ex07\ex00\ex00\ex00\exf0\exff\exff\exff
+\fBbinary scan\fR $str i2i* var1 var2
 .CE
-will return \fB2\fR with \fB5 7\fR stored in \fBvar1\fR and \fB-16\fR
-stored in \fBvar2\fR.  Note that the integers returned are signed, but
+will return \fB2\fR with \fB5 7\fR stored in \fIvar1\fR and \fB\-16\fR
+stored in \fIvar2\fR.  Note that the integers returned are signed, but
 they can be converted to unsigned 32-bit quantities using an expression
 like:
 .CS
-\fBexpr { $num & 0xffffffff }\fR
+set num [expr { $num & 0xffffffff }]
 .CE
 .RE
 .IP \fBI\fR 5
@@ -532,25 +628,34 @@ as \fIcount\fR 32-bit signed integers represented in big-endian byte
 order.  For example,
 .RS
 .CS
-\fBbinary scan \\x00\\x00\\x00\\x05\\x00\\x00\\x00\\x07\\xff\\xff\\xff\\xf0 I2I* var1 var2\fR
+set str \ex00\ex00\ex00\ex05\ex00\ex00\ex00\ex07\exff\exff\exff\exf0
+\fBbinary scan\fR $str I2I* var1 var2
 .CE
-will return \fB2\fR with \fB5 7\fR stored in \fBvar1\fR and \fB-16\fR
-stored in \fBvar2\fR.
+will return \fB2\fR with \fB5 7\fR stored in \fIvar1\fR and \fB\-16\fR
+stored in \fIvar2\fR.
 .RE
+.IP \fBn\fR 5
+.VS 8.5
+The data is interpreted as \fIcount\fR 32-bit signed integers
+represented in the native byte order of the machine running the Tcl
+script.  It is otherwise identical to \fBi\fR and \fBI\fR.
+To determine what the native byte order of the machine is, refer to
+the \fBbyteOrder\fR element of the \fBtcl_platform\fR array.
+.VE 8.5
 .IP \fBw\fR 5
-.VS 8.4
 The data is interpreted as \fIcount\fR 64-bit signed integers
 represented in little-endian byte order.  The integers are stored in
 the corresponding variable as a list.  If \fIcount\fR is \fB*\fR, then
-all of the remaining bytes in \fBstring\fR will be scanned.  If
+all of the remaining bytes in \fIstring\fR will be scanned.  If
 \fIcount\fR is omitted, then one 64-bit integer will be scanned.  For
 example,
 .RS
 .CS
-\fBbinary scan \\x05\\x00\\x00\\x00\\x07\\x00\\x00\\x00\\xf0\\xff\\xff\\xff wi* var1 var2\fR
+set str \ex05\ex00\ex00\ex00\ex07\ex00\ex00\ex00\exf0\exff\exff\exff
+\fBbinary scan\fR $str wi* var1 var2
 .CE
-will return \fB2\fR with \fB30064771077\fR stored in \fBvar1\fR and
-\fB-16\fR stored in \fBvar2\fR.  Note that the integers returned are
+will return \fB2\fR with \fB30064771077\fR stored in \fIvar1\fR and
+\fB\-16\fR stored in \fIvar2\fR.  Note that the integers returned are
 signed and cannot be represented by Tcl as unsigned values.
 .RE
 .IP \fBW\fR 5
@@ -559,18 +664,26 @@ as \fIcount\fR 64-bit signed integers represented in big-endian byte
 order.  For example,
 .RS
 .CS
-\fBbinary scan \\x00\\x00\\x00\\x05\\x00\\x00\\x00\\x07\\xff\\xff\\xff\\xf0 WI* var1 var2\fR
+set str \ex00\ex00\ex00\ex05\ex00\ex00\ex00\ex07\exff\exff\exff\exf0
+\fBbinary scan\fR $str WI* var1 var2
 .CE
-will return \fB2\fR with \fB21474836487\fR stored in \fBvar1\fR and \fB-16\fR
-stored in \fBvar2\fR.
-.VE
+will return \fB2\fR with \fB21474836487\fR stored in \fIvar1\fR and \fB\-16\fR
+stored in \fIvar2\fR.
 .RE
+.IP \fBm\fR 5
+.VS 8.5
+The data is interpreted as \fIcount\fR 64-bit signed integers
+represented in the native byte order of the machine running the Tcl
+script.  It is otherwise identical to \fBw\fR and \fBW\fR.
+To determine what the native byte order of the machine is, refer to
+the \fBbyteOrder\fR element of the \fBtcl_platform\fR array.
+.VE 8.5
 .IP \fBf\fR 5
 The data is interpreted as \fIcount\fR single-precision floating point
 numbers in the machine's native representation.  The floating point
 numbers are stored in the corresponding variable as a list.  If
 \fIcount\fR is \fB*\fR, then all of the remaining bytes in
-\fBstring\fR will be scanned.  If \fIcount\fR is omitted, then one
+\fIstring\fR will be scanned.  If \fIcount\fR is omitted, then one
 single-precision floating point number will be scanned.  The size of a
 floating point number may vary across architectures, so the number of
 bytes that are scanned may vary.  If the data does not represent a
@@ -579,11 +692,25 @@ compiler dependent.  For example, on a Windows system running on an
 Intel Pentium processor,
 .RS
 .CS
-\fBbinary scan \\x3f\\xcc\\xcc\\xcd f var1\fR
+\fBbinary scan\fR \ex3f\excc\excc\excd f var1
 .CE
 will return \fB1\fR with \fB1.6000000238418579\fR stored in
-\fBvar1\fR.
+\fIvar1\fR.
 .RE
+.IP \fBr\fR 5
+.VS 8.5
+This form is the same as \fBf\fR except that the data is interpreted
+as \fIcount\fR single-precision floating point number in little-endian
+order.  This conversion is not portable to the minority of systems not
+using IEEE floating point representations.
+.VE 8.5
+.IP \fBR\fR 5
+.VS 8.5
+This form is the same as \fBf\fR except that the data is interpreted
+as \fIcount\fR single-precision floating point number in big-endian
+order.  This conversion is not portable to the minority of systems not
+using IEEE floating point representations.
+.VE 8.5
 .IP \fBd\fR 5
 This form is the same as \fBf\fR except that the data is interpreted
 as \fIcount\fR double-precision floating point numbers in the
@@ -591,23 +718,37 @@ machine's native representation. For example, on a Windows system
 running on an Intel Pentium processor,
 .RS
 .CS
-\fBbinary scan \\x9a\\x99\\x99\\x99\\x99\\x99\\xf9\\x3f d var1\fR
+\fBbinary scan\fR \ex9a\ex99\ex99\ex99\ex99\ex99\exf9\ex3f d var1
 .CE
 will return \fB1\fR with \fB1.6000000000000001\fR
-stored in \fBvar1\fR.
-.RE
+stored in \fIvar1\fR.
+.RE
+.IP \fBq\fR 5
+.VS 8.5
+This form is the same as \fBd\fR except that the data is interpreted
+as \fIcount\fR double-precision floating point number in little-endian
+order.  This conversion is not portable to the minority of systems not
+using IEEE floating point representations.
+.VE 8.5
+.IP \fBQ\fR 5
+.VS 8.5
+This form is the same as \fBd\fR except that the data is interpreted
+as \fIcount\fR double-precision floating point number in big-endian
+order.  This conversion is not portable to the minority of systems not
+using IEEE floating point representations.
+.VE 8.5
 .IP \fBx\fR 5
 Moves the cursor forward \fIcount\fR bytes in \fIstring\fR.  If
 \fIcount\fR is \fB*\fR or is larger than the number of bytes after the
-current cursor cursor position, then the cursor is positioned after
+current cursor position, then the cursor is positioned after
 the last byte in \fIstring\fR.  If \fIcount\fR is omitted, then the
 cursor is moved forward one byte.  Note that this type does not
 consume an argument.  For example,
 .RS
 .CS
-\fBbinary scan \\x01\\x02\\x03\\x04 x2H* var1\fR
+\fBbinary scan\fR \ex01\ex02\ex03\ex04 x2H* var1
 .CE
-will return \fB1\fR with \fB0304\fR stored in \fBvar1\fR.
+will return \fB1\fR with \fB0304\fR stored in \fIvar1\fR.
 .RE
 .IP \fBX\fR 5
 Moves the cursor back \fIcount\fR bytes in \fIstring\fR.  If
@@ -618,10 +759,10 @@ is omitted then the cursor is moved back one byte.  Note that this
 type does not consume an argument.  For example,
 .RS
 .CS
-\fBbinary scan \\x01\\x02\\x03\\x04 c2XH* var1 var2\fR
+\fBbinary scan\fR \ex01\ex02\ex03\ex04 c2XH* var1 var2
 .CE
-will return \fB2\fR with \fB1 2\fR stored in \fBvar1\fR and \fB020304\fR
-stored in \fBvar2\fR.
+will return \fB2\fR with \fB1 2\fR stored in \fIvar1\fR and \fB020304\fR
+stored in \fIvar2\fR.
 .RE
 .IP \fB@\fR 5
 Moves the cursor to the absolute location in the data string specified
@@ -631,21 +772,23 @@ by \fIcount\fR.  Note that position 0 refers to the first byte in
 \fIcount\fR is omitted, then an error will be generated.  For example,
 .RS
 .CS
-\fBbinary scan \\x01\\x02\\x03\\x04 c2@1H* var1 var2\fR
+\fBbinary scan\fR \ex01\ex02\ex03\ex04 c2@1H* var1 var2
 .CE
-will return \fB2\fR with \fB1 2\fR stored in \fBvar1\fR and \fB020304\fR
-stored in \fBvar2\fR.
+will return \fB2\fR with \fB1 2\fR stored in \fIvar1\fR and \fB020304\fR
+stored in \fIvar2\fR.
 .RE
-.SH "PLATFORM ISSUES"
-Sometimes it is desirable to format or scan integer values in the
-native byte order for the machine.  Refer to the \fBbyteOrder\fR
-element of the \fBtcl_platform\fR array to decide which type character
-to use when formatting or scanning integers.
+.SH "PORTABILITY ISSUES"
+The \fBr\fR, \fBR\fR, \fBq\fR and \fBQ\fR conversions will only work
+reliably for transferring data between computers which are all using
+IEEE floating point representations.  This is very common, but not
+universal.  To transfer floating-point numbers portably between all
+architectures, use their textual representation (as produced by
+\fBformat\fR) instead.
 .SH EXAMPLES
 This is a procedure to write a Tcl string to a binary-encoded channel as
 UTF-8 data preceded by a length word:
 .CS
-proc writeString {channel string} {
+proc \fIwriteString\fR {channel string} {
     set data [encoding convertto utf-8 $string]
     puts -nonewline [\fBbinary format\fR Ia* \e
             [string length $data] $data]
@@ -653,9 +796,9 @@ proc writeString {channel string} {
 .CE
 .PP
 This procedure reads a string from a channel that was written by the
-previously presented \fBwriteString\fR procedure:
+previously presented \fIwriteString\fR procedure:
 .CS
-proc readString {channel} {
+proc \fIreadString\fR {channel} {
     if {![\fBbinary scan\fR [read $channel 4] I length]} {
         error "missing length"
     }
@@ -663,9 +806,7 @@ proc readString {channel} {
     return [encoding convertfrom utf-8 $data]
 }
 .CE
-
 .SH "SEE ALSO"
 format(n), scan(n), tclvars(n)
-
 .SH KEYWORDS
 binary, format, scan
diff --git a/doc/catch.n b/doc/catch.n
index f2d5533..0e2ec04 100644
--- a/doc/catch.n
+++ b/doc/catch.n
@@ -1,18 +1,19 @@
 '\"
 '\" Copyright (c) 1993-1994 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
+'\" Contributions from Don Porter, NIST, 2003.  (not subject to US copyright)
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH catch n "8.0" Tcl "Tcl Built-In Commands"
+.TH catch n "8.5" Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 catch \- Evaluate script and trap exceptional returns
 .SH SYNOPSIS
-\fBcatch\fI script \fR?\fIvarName\fR?
+\fBcatch\fI script \fR?\fIresultVarName\fR? ?\fIoptionsVarName\fR?
 .BE
 
 .SH DESCRIPTION
@@ -35,44 +36,61 @@ new commands that return other integer values as return codes as well,
 and scripts that make use of the \fBreturn -code\fR command can also
 have return codes other than the five defined by Tcl.
 .PP
-If the \fIvarName\fR argument is given, then the variable it names is
+If the \fIresultVarName\fR argument is given, then the variable it names is
 set to the result of the script evaluation.  When the return code from
-the script is 1 (\fBTCL_ERROR\fR), the value stored in \fIvarName\fR is an error
+the script is 1 (\fBTCL_ERROR\fR), the value stored in \fIresultVarName\fR is an error
 message.  When the return code from the script is 0 (\fBTCL_OK\fR), the value
 stored in \fIresultVarName\fR is the value returned from \fIscript\fR.
 .PP
-If \fIscript\fR does not raise an error, \fBcatch\fR will return 0
-(\fBTCL_OK\fR) and set the variable to the value returned from \fIscript\fR.
+.VS 8.5
+If the \fIoptionsVarName\fR argument is given, then the variable it
+names is set to a dictionary of return options returned by evaluation
+of \fIscript\fR.  Tcl specifies two entries that are always 
+defined in the dictionary: \fB\-code\fR and \fB\-level\fR.  When
+the return code from evaluation of \fIscript\fR is not \fBTCL_RETURN\fR,
+the value of the \fB\-level\fR entry will be 0, and the value
+of the \fB\-code\fR entry will be the same as the return code.
+Only when the return code is \fBTCL_RETURN\fR will the values of
+the \fB\-level\fR and \fB\-code\fR entries be something else, as
+further described in the documentation for the \fBreturn\fR command.
 .PP
-Note that \fBcatch\fR catches all exceptions, including those
-generated by \fBbreak\fR and \fBcontinue\fR as well as errors.  The
-only errors that are not caught are syntax errors found when the
-script is compiled.  This is because the catch command only catches
-errors during runtime.  When the catch statement is compiled, the
-script is compiled as well and any syntax errors will generate a Tcl
-error. 
-
+When the return code from evaluation of \fIscript\fR is \fBTCL_ERROR\fR,
+three additional entries are defined in the dictionary of return options
+stored in \fIoptionsVarName\fR: \fB\-errorinfo\fR, \fB\-errorcode\fR, 
+and \fB\-errorline\fR.  The value of the \fB\-errorinfo\fR entry
+is a formatted stack trace containing more information about
+the context in which the error happened.  The formatted stack
+trace is meant to be read by a person.  The value of
+the \fB\-errorcode\fR entry is additional information about the
+error stored as a list.  The \fB\-errorcode\fR value is meant to
+be further processed by programs, and may not be particularly
+readable by people.  The value of the \fB\-errorline\fR entry
+is an integer indicating which line of \fIscript\fR was being
+evaluated when the error occurred.  The values of the \fB\-errorinfo\fR
+and \fB\-errorcode\fR entries of the most recent error are also
+available as values of the global variables \fB::errorInfo\fR
+and \fB::errorCode\fR respectively.
+.PP
+Tcl packages may provide commands that set other entries in the
+dictionary of return options, and the \fBreturn\fR command may be
+used by scripts to set return options in addition to those defined
+above.
+.VE 8.5
 .SH EXAMPLES
 The \fBcatch\fR command may be used in an \fBif\fR to branch based on
 the success of a script.
 .CS
 if { [\fBcatch\fR {open $someFile w} fid] } {
-    puts stderr "Could not open $someFile for writing\\n$fid"
+    puts stderr "Could not open $someFile for writing\en$fid"
     exit 1
 }
 .CE
 .PP
-The \fBcatch\fR command will not catch compiled syntax errors.  The
-first time proc \fBfoo\fR is called, the body will be compiled and a
-Tcl error will be generated. 
-.CS
-proc foo {} {
-    \fBcatch\fR {expr {1 +- }}
-}
-.CE
+There are more complex examples of \fBcatch\fR usage in the
+documentation for the \fBreturn\fR command.
 
 .SH "SEE ALSO" 
-break(n), continue(n), error(n), return(n), tclvars(n)
+break(n), continue(n), dict(n), error(n), return(n), tclvars(n)
 
 .SH KEYWORDS
 catch, error
diff --git a/doc/chan.n b/doc/chan.n
new file mode 100644
index 0000000..f5d3d54
--- /dev/null
+++ b/doc/chan.n
@@ -0,0 +1,736 @@
+'\" 
+'\" Copyright (c) 2005-2006 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+.so man.macros
+.TH chan n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+chan \- Read, write and manipulate channels
+.SH SYNOPSIS
+\fBchan \fIoption\fR ?\fIarg arg ...\fR?
+.BE
+.SH DESCRIPTION
+.PP
+This command provides several operations for reading from, writing to
+and otherwise manipulating open channels (such as have been created
+with the \fBopen\fR and \fBsocket\fR commands, or the default named
+channels \fBstdin\fR, \fBstdout\fR or \fBstderr\fR which correspond to
+the process's standard input, output and error streams respectively).
+\fIOption\fR indicates what to do with the channel; any unique
+abbreviation for \fIoption\fR is acceptable. Valid options are:
+.TP
+\fBchan blocked \fIchannelId\fR
+.
+This tests whether the last input operation on the channel called
+\fIchannelId\fR failed because it would have otherwise caused the
+process to block, and returns 1 if that was the case. It returns 0
+otherwise. Note that this only ever returns 1 when the channel has
+been configured to be non-blocking; all Tcl channels have blocking
+turned on by default.
+.TP
+\fBchan close \fIchannelId\fR
+.
+Close and destroy the channel called \fIchannelId\fR. Note that this
+deletes all existing file-events registered on the channel.
+.RS
+.PP
+As part of closing the channel, all buffered output is flushed to the
+channel's output device, any buffered input is discarded, the
+underlying operating system resource is closed and \fIchannelId\fR
+becomes unavailable for future use.
+.PP
+If the channel is blocking, the command does not return until all
+output is flushed.  If the channel is nonblocking and there is
+unflushed output, the channel remains open and the command returns
+immediately; output will be flushed in the background and the channel
+will be closed when all the flushing is complete.
+.PP
+If \fIchannelId\fR is a blocking channel for a command pipeline then
+\fBchan close\fR waits for the child processes to complete.
+.PP
+If the channel is shared between interpreters, then \fBchan close\fR
+makes \fIchannelId\fR unavailable in the invoking interpreter but has
+no other effect until all of the sharing interpreters have closed the
+channel. When the last interpreter in which the channel is registered
+invokes \fBchan close\fR (or \fBclose\fR), the cleanup actions
+described above occur. See the \fBinterp\fR command for a description
+of channel sharing.
+.PP
+Channels are automatically closed when an interpreter is destroyed and
+when the process exits.  Channels are switched to blocking mode, to
+ensure that all output is correctly flushed before the process exits.
+.PP
+The command returns an empty string, and may generate an error if
+an error occurs while flushing output.  If a command in a command
+pipeline created with \fBopen\fR returns an error, \fBchan close\fR
+generates an error (similar to the \fBexec\fR command.)
+.RE
+.TP
+\fBchan configure \fIchannelId\fR ?\fIoptionName\fR? ?\fIvalue\fR? ?\fIoptionName value\fR?...
+.
+Query or set the configuration options of the channel named
+\fIchannelId\fR.
+.RS
+.PP
+If no \fIoptionName\fR or \fIvalue\fR arguments are supplied, the
+command returns a list containing alternating option names and values
+for the channel.  If \fIoptionName\fR is supplied but no \fIvalue\fR
+then the command returns the current value of the given option.  If
+one or more pairs of \fIoptionName\fR and \fIvalue\fR are supplied,
+the command sets each of the named options to the corresponding
+\fIvalue\fR; in this case the return value is an empty string.
+.PP
+The options described below are supported for all channels. In
+addition, each channel type may add options that only it supports. See
+the manual entry for the command that creates each type of channels
+for the options that that specific type of channel supports. For
+example, see the manual entry for the \fBsocket\fR command for its
+additional options.
+.TP
+\fB\-blocking\fR \fIboolean\fR
+.
+The \fB\-blocking\fR option determines whether I/O operations on the
+channel can cause the process to block indefinitely.  The value of the
+option must be a proper boolean value.  Channels are normally in
+blocking mode; if a channel is placed into nonblocking mode it will
+affect the operation of the \fBchan gets\fR, \fBchan read\fR, \fBchan
+puts\fR, \fBchan flush\fR, and \fBchan close\fR commands; see the
+documentation for those commands for details.  For nonblocking mode to
+work correctly, the application must be using the Tcl event loop
+(e.g. by calling \fBTcl_DoOneEvent\fR or invoking the \fBvwait\fR
+command).
+.TP
+\fB\-buffering\fR \fInewValue\fR
+.
+If \fInewValue\fR is \fBfull\fR then the I/O system will buffer output
+until its internal buffer is full or until the \fBchan flush\fR
+command is invoked. If \fInewValue\fR is \fBline\fR, then the I/O
+system will automatically flush output for the channel whenever a
+newline character is output. If \fInewValue\fR is \fBnone\fR, the I/O
+system will flush automatically after every output operation.  The
+default is for \fB\-buffering\fR to be set to \fBfull\fR except for
+channels that connect to terminal-like devices; for these channels the
+initial setting is \fBline\fR.  Additionally, \fBstdin\fR and
+\fBstdout\fR are initially set to \fBline\fR, and \fBstderr\fR is set
+to \fBnone\fR.
+.TP
+\fB\-buffersize\fR \fInewSize\fR
+.
+\fINewvalue\fR must be an integer; its value is used to set the size
+of buffers, in bytes, subsequently allocated for this channel to store
+input or output. \fINewvalue\fR must be a number of no more than one
+million, allowing buffers of up to one million bytes in size.
+.TP
+\fB\-encoding\fR \fIname\fR
+.
+This option is used to specify the encoding of the channel as one of
+the named encodings returned by \fBencoding names\fR or the special
+value \fBbinary\fR, so that the data can be converted to and from
+Unicode for use in Tcl.  For instance, in order for Tcl to read
+characters from a Japanese file in \fBshiftjis\fR and properly process
+and display the contents, the encoding would be set to \fBshiftjis\fR.
+Thereafter, when reading from the channel, the bytes in the Japanese
+file would be converted to Unicode as they are read.  Writing is also
+supported \- as Tcl strings are written to the channel they will
+automatically be converted to the specified encoding on output.
+.RS
+.PP
+If a file contains pure binary data (for instance, a JPEG image), the
+encoding for the channel should be configured to be \fBbinary\fR.  Tcl
+will then assign no interpretation to the data in the file and simply
+read or write raw bytes.  The Tcl \fBbinary\fR command can be used to
+manipulate this byte-oriented data.  It is usually better to set the
+\fB\-translation\fR option to \fBbinary\fR when you want to transfer
+binary data, as this turns off the other automatic interpretations of
+the bytes in the stream as well.
+.PP
+The default encoding for newly opened channels is the same platform-
+and locale-dependent system encoding used for interfacing with the
+operating system, as returned by \fBencoding system\fR.
+.RE
+.TP
+\fB\-eofchar\fR \fIchar\fR
+.TP
+\fB\-eofchar\fR \fB{\fIinChar outChar\fB}\fR
+.
+This option supports DOS file systems that use Control-z (\ex1a) as an
+end of file marker.  If \fIchar\fR is not an empty string, then this
+character signals end-of-file when it is encountered during input.
+For output, the end-of-file character is output when the channel is
+closed.  If \fIchar\fR is the empty string, then there is no special
+end of file character marker.  For read-write channels, a two-element
+list specifies the end of file marker for input and output,
+respectively.  As a convenience, when setting the end-of-file
+character for a read-write channel you can specify a single value that
+will apply to both reading and writing.  When querying the end-of-file
+character of a read-write channel, a two-element list will always be
+returned.  The default value for \fB\-eofchar\fR is the empty string
+in all cases except for files under Windows.  In that case the
+\fB\-eofchar\fR is Control-z (\ex1a) for reading and the empty string
+for writing.
+The acceptable range for \fB\-eofchar\fR values is \ex01 - \ex7f;
+attempting to set \fB\-eofchar\fR to a value outside of this range will
+generate an error.
+.TP
+\fB\-translation\fR \fImode\fR
+.TP
+\fB\-translation\fR \fB{\fIinMode outMode\fB}\fR 
+.
+In Tcl scripts the end of a line is always represented using a single
+newline character (\en).  However, in actual files and devices the end
+of a line may be represented differently on different platforms, or
+even for different devices on the same platform.  For example, under
+UNIX newlines are used in files, whereas carriage-return-linefeed
+sequences are normally used in network connections.  On input (i.e.,
+with \fBchan gets\fR and \fBchan read\fR) the Tcl I/O system
+automatically translates the external end-of-line representation into
+newline characters.  Upon output (i.e., with \fBchan puts\fR), the I/O
+system translates newlines to the external end-of-line representation.
+The default translation mode, \fBauto\fR, handles all the common cases
+automatically, but the \fB\-translation\fR option provides explicit
+control over the end of line translations.
+.RS
+.PP
+The value associated with \fB\-translation\fR is a single item for
+read-only and write-only channels.  The value is a two-element list for
+read-write channels; the read translation mode is the first element of
+the list, and the write translation mode is the second element.  As a
+convenience, when setting the translation mode for a read-write channel
+you can specify a single value that will apply to both reading and
+writing.  When querying the translation mode of a read-write channel, a
+two-element list will always be returned.  The following values are
+currently supported:
+.TP
+\fBauto\fR
+.
+As the input translation mode, \fBauto\fR treats any of newline
+(\fBlf\fR), carriage return (\fBcr\fR), or carriage return followed by
+a newline (\fBcrlf\fR) as the end of line representation.  The end of
+line representation can even change from line-to-line, and all cases
+are translated to a newline.  As the output translation mode,
+\fBauto\fR chooses a platform specific representation; for sockets on
+all platforms Tcl chooses \fBcrlf\fR, for all Unix flavors, it chooses
+\fBlf\fR, and for the various flavors of Windows it chooses
+\fBcrlf\fR.  The default setting for \fB\-translation\fR is \fBauto\fR
+for both input and output.
+.TP
+\fBbinary\fR 
+.
+No end-of-line translations are performed.  This is nearly identical
+to \fBlf\fR mode, except that in addition \fBbinary\fR mode also sets
+the end-of-file character to the empty string (which disables it) and
+sets the encoding to \fBbinary\fR (which disables encoding filtering).
+See the description of \fB\-eofchar\fR and \fB\-encoding\fR for more
+information.
+.TP
+\fBcr\fR
+.
+The end of a line in the underlying file or device is represented by a
+single carriage return character.  As the input translation mode,
+\fBcr\fR mode converts carriage returns to newline characters.  As the
+output translation mode, \fBcr\fR mode translates newline characters
+to carriage returns.
+.TP
+\fBcrlf\fR
+.
+The end of a line in the underlying file or device is represented by a
+carriage return character followed by a linefeed character.  As the
+input translation mode, \fBcrlf\fR mode converts
+carriage-return-linefeed sequences to newline characters.  As the
+output translation mode, \fBcrlf\fR mode translates newline characters
+to carriage-return-linefeed sequences.  This mode is typically used on
+Windows platforms and for network connections.
+.TP
+\fBlf\fR
+.
+The end of a line in the underlying file or device is represented by a
+single newline (linefeed) character.  In this mode no translations
+occur during either input or output.  This mode is typically used on
+UNIX platforms.
+.RE
+.RE
+.TP
+\fBchan copy \fIinputChan outputChan\fR ?\fB\-size \fIsize\fR? ?\fB\-command \fIcallback\fR?
+.
+Copy data from the channel \fIinputChan\fR, which must have been
+opened for reading, to the channel \fIoutputChan\fR, which must have
+been opened for writing. The \fBchan copy\fR command leverages the
+buffering in the Tcl I/O system to avoid extra copies and to avoid
+buffering too much data in main memory when copying large files to
+slow destinations like network sockets.
+.RS
+.PP
+The \fBchan copy\fR command transfers data from \fIinputChan\fR until
+end of file or \fIsize\fR bytes have been transferred. If no
+\fB\-size\fR argument is given, then the copy goes until end of file.
+All the data read from \fIinputChan\fR is copied to \fIoutputChan\fR.
+Without the \fB\-command\fR option, \fBchan copy\fR blocks until the
+copy is complete and returns the number of bytes written to
+\fIoutputChan\fR.
+.PP
+The \fB\-command\fR argument makes \fBchan copy\fR work in the
+background.  In this case it returns immediately and the
+\fIcallback\fR is invoked later when the copy completes.  The
+\fIcallback\fR is called with one or two additional arguments that
+indicates how many bytes were written to \fIoutputChan\fR.  If an
+error occurred during the background copy, the second argument is the
+error string associated with the error.  With a background copy, it is
+not necessary to put \fIinputChan\fR or \fIoutputChan\fR into
+non-blocking mode; the \fBchan copy\fR command takes care of that
+automatically.  However, it is necessary to enter the event loop by
+using the \fBvwait\fR command or by using Tk.
+.PP
+You are not allowed to do other I/O operations with \fIinputChan\fR or
+\fIoutputChan\fR during a background \fBchan copy\fR.  If either
+\fIinputChan\fR or \fIoutputChan\fR get closed while the copy is in
+progress, the current copy is stopped and the command callback is
+\fInot\fR made.  If \fIinputChan\fR is closed, then all data already
+queued for \fIoutputChan\fR is written out.
+.PP
+Note that \fIinputChan\fR can become readable during a background
+copy.  You should turn off any \fBchan event\fR or \fBfileevent\fR
+handlers during a background copy so those handlers do not interfere
+with the copy.  Any I/O attempted by a \fBchan event\fR or
+\fBfileevent\fR handler will get a
+.QW "channel busy"
+error.
+.PP
+\fBChan copy\fR translates end-of-line sequences in \fIinputChan\fR
+and \fIoutputChan\fR according to the \fB\-translation\fR option for
+these channels (see \fBchan configure\fR above).  The translations
+mean that the number of bytes read from \fIinputChan\fR can be
+different than the number of bytes written to \fIoutputChan\fR.  Only
+the number of bytes written to \fIoutputChan\fR is reported, either as
+the return value of a synchronous \fBchan copy\fR or as the argument
+to the callback for an asynchronous \fBchan copy\fR.
+.PP
+\fBChan copy\fR obeys the encodings and character translations
+configured for the channels. This means that the incoming characters
+are converted internally first UTF-8 and then into the encoding of the
+channel \fBchan copy\fR writes to (see \fBchan configure\fR above for
+details on the \fB\-encoding\fR and \fB\-translation\fR options). No
+conversion is done if both channels are set to encoding \fBbinary\fR
+and have matching translations. If only the output channel is set to
+encoding \fBbinary\fR the system will write the internal UTF-8
+representation of the incoming characters. If only the input channel
+is set to encoding \fBbinary\fR the system will assume that the
+incoming bytes are valid UTF-8 characters and convert them according
+to the output encoding. The behaviour of the system for bytes which
+are not valid UTF-8 characters is undefined in this case.
+.RE
+.TP
+\fBchan create \fImode cmdPrefix\fR
+.
+This subcommand creates a new script level channel using the command
+prefix \fIcmdPrefix\fR as its handler. Any such channel is called a
+\fBreflected\fR channel. The specified command prefix, \fBcmdPrefix\fR,
+must be a non-empty list, and should provide the API described in the
+\fBreflectedchan\fR manual page. The handle of the new channel is
+returned as the result of the \fBchan create\fR command, and the
+channel is open. Use either \fBclose\fR or \fBchan close\fR to remove
+the channel.
+.RS
+.PP
+The argument \fImode\fR specifies if the new channel is opened for
+reading, writing, or both. It has to be a list containing any of the
+strings
+.QW \fBread\fR
+or
+.QW \fBwrite\fR .
+The list must have at least one
+element, as a channel you can neither write to nor read from makes no
+sense. The handler command for the new channel must support the chosen
+mode, or an error is thrown.
+.PP
+The command prefix is executed in the global namespace, at the top of
+call stack, following the appending of arguments as described in the
+\fBreflectedchan\fR manual page. Command resolution happens at the
+time of the call. Renaming the command, or destroying it means that
+the next call of a handler method may fail, causing the channel
+command invoking the handler to fail as well. Depending on the
+subcommand being invoked, the error message may not be able to explain
+the reason for that failure.
+.PP
+Every channel created with this subcommand knows which interpreter it
+was created in, and only ever executes its handler command in that
+interpreter, even if the channel was shared with and/or was moved into
+a different interpreter. Each reflected channel also knows the thread
+it was created in, and executes its handler command only in that
+thread, even if the channel was moved into a different thread. To this
+end all invocations of the handler are forwarded to the original
+thread by posting special events to it. This means that the original
+thread (i.e. the thread that executed the \fBchan create\fR command)
+must have an active event loop, i.e. it must be able to process such
+events. Otherwise the thread sending them will \fIblock
+indefinitely\fR. Deadlock may occur.
+.PP
+Note that this permits the creation of a channel whose two endpoints
+live in two different threads, providing a stream-oriented bridge
+between these threads. In other words, we can provide a way for
+regular stream communication between threads instead of having to send
+commands.
+.PP
+When a thread or interpreter is deleted, all channels created with
+this subcommand and using this thread/interpreter as their computing
+base are deleted as well, in all interpreters they have been shared
+with or moved into, and in whatever thread they have been transfered
+to. While this pulls the rug out under the other thread(s) and/or
+interpreter(s), this cannot be avoided. Trying to use such a channel
+will cause the generation of a regular error about unknown channel
+handles.
+.PP
+This subcommand is \fBsafe\fR and made accessible to safe
+interpreters.  While it arranges for the execution of arbitrary Tcl
+code the system also makes sure that the code is always executed
+within the safe interpreter.
+.RE
+.TP
+\fBchan eof \fIchannelId\fR
+.
+Test whether the last input operation on the channel called
+\fIchannelId\fR failed because the end of the data stream was reached,
+returning 1 if end-of-file was reached, and 0 otherwise.
+.TP
+\fBchan event \fIchannelId event\fR ?\fIscript\fR?
+.
+Arrange for the Tcl script \fIscript\fR to be installed as a \fIfile
+event handler\fR to be called whenever the channel called
+\fIchannelId\fR enters the state described by \fIevent\fR (which must
+be either \fBreadable\fR or \fBwritable\fR); only one such handler may
+be installed per event per channel at a time.  If \fIscript\fR is the
+empty string, the current handler is deleted (this also happens if the
+channel is closed or the interpreter deleted).  If \fIscript\fR is
+omitted, the currently installed script is returned (or an empty
+string if no such handler is installed).  The callback is only
+performed if the event loop is being serviced (e.g. via \fBvwait\fR or
+\fBupdate\fR).
+.RS
+.PP
+A file event handler is a binding between a channel and a script, such
+that the script is evaluated whenever the channel becomes readable or
+writable.  File event handlers are most commonly used to allow data to
+be received from another process on an event-driven basis, so that the
+receiver can continue to interact with the user or with other channels
+while waiting for the data to arrive.  If an application invokes
+\fBchan gets\fR or \fBchan read\fR on a blocking channel when there is
+no input data available, the process will block; until the input data
+arrives, it will not be able to service other events, so it will
+appear to the user to
+.QW "freeze up" .
+With \fBchan event\fR, the
+process can tell when data is present and only invoke \fBchan gets\fR
+or \fBchan read\fR when they will not block.
+.PP
+A channel is considered to be readable if there is unread data
+available on the underlying device.  A channel is also considered to
+be readable if there is unread data in an input buffer, except in the
+special case where the most recent attempt to read from the channel
+was a \fBchan gets\fR call that could not find a complete line in the
+input buffer.  This feature allows a file to be read a line at a time
+in nonblocking mode using events.  A channel is also considered to be
+readable if an end of file or error condition is present on the
+underlying file or device.  It is important for \fIscript\fR to check
+for these conditions and handle them appropriately; for example, if
+there is no special check for end of file, an infinite loop may occur
+where \fIscript\fR reads no data, returns, and is immediately invoked
+again.
+.PP
+A channel is considered to be writable if at least one byte of data
+can be written to the underlying file or device without blocking, or
+if an error condition is present on the underlying file or device.
+Note that client sockets opened in asynchronous mode become writable
+when they become connected or if the connection fails.
+.PP
+Event-driven I/O works best for channels that have been placed into
+nonblocking mode with the \fBchan configure\fR command.  In blocking
+mode, a \fBchan puts\fR command may block if you give it more data
+than the underlying file or device can accept, and a \fBchan gets\fR
+or \fBchan read\fR command will block if you attempt to read more data
+than is ready; no events will be processed while the commands block.
+In nonblocking mode \fBchan puts\fR, \fBchan read\fR, and \fBchan
+gets\fR never block.
+.PP
+The script for a file event is executed at global level (outside the
+context of any Tcl procedure) in the interpreter in which the \fBchan
+event\fR command was invoked.  If an error occurs while executing the
+script then the command registered with \fBinterp bgerror\fR is used
+to report the error.  In addition, the file event handler is deleted
+if it ever returns an error; this is done in order to prevent infinite
+loops due to buggy handlers.
+.RE
+.TP
+\fBchan flush \fIchannelId\fR
+.
+Ensures that all pending output for the channel called \fIchannelId\fR
+is written.
+.RS
+.PP
+If the channel is in blocking mode the command does not return until
+all the buffered output has been flushed to the channel. If the
+channel is in nonblocking mode, the command may return before all
+buffered output has been flushed; the remainder will be flushed in the
+background as fast as the underlying file or device is able to absorb
+it.
+.RE
+.TP
+\fBchan gets \fIchannelId\fR ?\fIvarName\fR?
+.
+Reads the next line from the channel called \fIchannelId\fR. If
+\fIvarName\fR is not specified, the result of the command will be the
+line that has been read (without a trailing newline character) or an
+empty string upon end-of-file or, in non-blocking mode, if the data
+available is exhausted. If \fIvarName\fR is specified, the line that
+has been read will be written to the variable called \fIvarName\fR and
+result will be the number of characters that have been read or -1 if
+end-of-file was reached or, in non-blocking mode, if the data
+available is exhausted.
+.RS
+.PP
+If an end-of-file occurs while part way through reading a line, the
+partial line will be returned (or written into \fIvarName\fR). When
+\fIvarName\fR is not specified, the end-of-file case can be
+distinguished from an empty line using the \fBchan eof\fR command, and
+the partial-line-but-nonblocking case can be distinguished with the
+\fBchan blocked\fR command.
+.RE
+.TP
+\fBchan names\fR ?\fIpattern\fR?
+.
+Produces a list of all channel names. If \fIpattern\fR is specified,
+only those channel names that match it (according to the rules of
+\fBstring match\fR) will be returned.
+.TP
+\fBchan pending \fImode channelId\fR
+.
+Depending on whether \fImode\fR is \fBinput\fR or \fBoutput\fR,
+returns the number of
+bytes of input or output (respectively) currently buffered 
+internally for \fIchannelId\fR (especially useful in a readable event 
+callback to impose application-specific limits on input line lengths to avoid
+a potential denial-of-service attack where a hostile user crafts
+an extremely long line that exceeds the available memory to buffer it).
+Returns -1 if the channel was not opened for the mode in question.
+.TP
+\fBchan postevent \fIchannelId eventSpec\fR
+.
+This subcommand is used by command handlers specified with \fBchan
+create\fR. It notifies the channel represented by the handle
+\fIchannelId\fR that the event(s) listed in the \fIeventSpec\fR have
+occurred. The argument has to be a list containing any of the strings
+\fBread\fR and \fBwrite\fR. The list must contain at least one
+element as it does not make sense to invoke the command if there are
+no events to post.
+.RS
+.PP
+Note that this subcommand can only be used with channel handles that
+were created/opened by \fBchan create\fR. All other channels will
+cause this subcommand to report an error.
+.PP
+As only the Tcl level of a channel, i.e. its command handler, should
+post events to it we also restrict the usage of this command to the
+interpreter that created the channel. In other words, posting events
+to a reflected channel from an interpreter that does not contain it's
+implementation is not allowed. Attempting to post an event from any
+other interpreter will cause this subcommand to report an error.
+.PP
+Another restriction is that it is not possible to post events that the
+I/O core has not registered an interest in. Trying to do so will cause
+the method to throw an error. See the command handler method
+\fBwatch\fR described in \fBreflectedchan\fR, the document specifying
+the API of command handlers for reflected channels.
+.PP
+This command is \fBsafe\fR and made accessible to safe interpreters.
+It can trigger the execution of \fBchan event\fR handlers, whether in the
+current interpreter or in other interpreters or other threads, even
+where the event is posted from a safe interpreter and listened for by
+a trusted interpreter. \fBChan event\fR handlers are \fIalways\fR
+executed in the interpreter that set them up.
+.RE
+.TP
+\fBchan puts\fR ?\fB\-nonewline\fR? ?\fIchannelId\fR? \fIstring\fR
+.
+Writes \fIstring\fR to the channel named \fIchannelId\fR followed by a
+newline character. A trailing newline character is written unless the
+optional flag \fB\-nonewline\fR is given. If \fIchannelId\fR is
+omitted, the string is written to the standard output channel,
+\fBstdout\fR.
+.RS
+.PP
+Newline characters in the output are translated by \fBchan puts\fR to
+platform-specific end-of-line sequences according to the currently
+configured value of the \fB\-translation\fR option for the channel
+(for example, on PCs newlines are normally replaced with
+carriage-return-linefeed sequences; see \fBchan configure\fR above for
+details).
+.PP
+Tcl buffers output internally, so characters written with \fBchan
+puts\fR may not appear immediately on the output file or device; Tcl
+will normally delay output until the buffer is full or the channel is
+closed.  You can force output to appear immediately with the \fBchan
+flush\fR command.
+.PP
+When the output buffer fills up, the \fBchan puts\fR command will
+normally block until all the buffered data has been accepted for
+output by the operating system.  If \fIchannelId\fR is in nonblocking
+mode then the \fBchan puts\fR command will not block even if the
+operating system cannot accept the data.  Instead, Tcl continues to
+buffer the data and writes it in the background as fast as the
+underlying file or device can accept it.  The application must use the
+Tcl event loop for nonblocking output to work; otherwise Tcl never
+finds out that the file or device is ready for more output data.  It
+is possible for an arbitrarily large amount of data to be buffered for
+a channel in nonblocking mode, which could consume a large amount of
+memory.  To avoid wasting memory, nonblocking I/O should normally be
+used in an event-driven fashion with the \fBchan event\fR command
+(do not invoke \fBchan puts\fR unless you have recently been notified
+via a file event that the channel is ready for more output data).
+.RE
+.TP
+\fBchan read \fIchannelId\fR ?\fInumChars\fR?
+.TP
+\fBchan read \fR?\fB\-nonewline\fR? \fIchannelId\fR
+.
+In the first form, the result will be the next \fInumChars\fR
+characters read from the channel named \fIchannelId\fR; if
+\fInumChars\fR is omitted, all characters up to the point when the
+channel would signal a failure (whether an end-of-file, blocked or
+other error condition) are read. In the second form (i.e. when
+\fInumChars\fR has been omitted) the flag \fB\-nonewline\fR may be
+given to indicate that any trailing newline in the string that has
+been read should be trimmed.
+.RS
+.PP
+If \fIchannelId\fR is in nonblocking mode, \fBchan read\fR may not
+read as many characters as requested: once all available input has
+been read, the command will return the data that is available rather
+than blocking for more input.  If the channel is configured to use a
+multi-byte encoding, then there may actually be some bytes remaining
+in the internal buffers that do not form a complete character.  These
+bytes will not be returned until a complete character is available or
+end-of-file is reached.  The \fB\-nonewline\fR switch is ignored if
+the command returns before reaching the end of the file.
+.PP
+\fBChan read\fR translates end-of-line sequences in the input into
+newline characters according to the \fB\-translation\fR option for the
+channel (see \fBchan configure\fR above for a discussion on the ways
+in which \fBchan configure\fR will alter input).
+.PP
+When reading from a serial port, most applications should configure
+the serial port channel to be nonblocking, like this:
+.CS
+\fBchan configure \fIchannelId \fB\-blocking \fI0\fR.
+.CE
+Then \fBchan read\fR behaves much like described above.  Note that
+most serial ports are comparatively slow; it is entirely possible to
+get a \fBreadable\fR event for each character read from them. Care
+must be taken when using \fBchan read\fR on blocking serial ports:
+.TP
+\fBchan read \fIchannelId numChars\fR
+.
+In this form \fBchan read\fR blocks until \fInumChars\fR have been
+received from the serial port.
+.TP
+\fBchan read \fIchannelId\fR
+.
+In this form \fBchan read\fR blocks until the reception of the
+end-of-file character, see \fBchan configure -eofchar\fR. If there no
+end-of-file character has been configured for the channel, then
+\fBchan read\fR will block forever.
+.RE
+.TP
+\fBchan seek \fIchannelId offset\fR ?\fIorigin\fR?
+.
+Sets the current access position within the underlying data stream for
+the channel named \fIchannelId\fR to be \fIoffset\fR bytes relative to
+\fIorigin\fR. \fIOffset\fR must be an integer (which may be negative)
+and \fIorigin\fR must be one of the following:
+.RS
+.TP 10
+\fBstart\fR
+.
+The new access position will be \fIoffset\fR bytes from the start
+of the underlying file or device.
+.TP 10
+\fBcurrent\fR
+.
+The new access position will be \fIoffset\fR bytes from the current
+access position; a negative \fIoffset\fR moves the access position
+backwards in the underlying file or device.
+.TP 10
+\fBend\fR
+.
+The new access position will be \fIoffset\fR bytes from the end of the
+file or device.  A negative \fIoffset\fR places the access position
+before the end of file, and a positive \fIoffset\fR places the access
+position after the end of file.
+.PP
+The \fIorigin\fR argument defaults to \fBstart\fR.
+.PP
+\fBChan seek\fR flushes all buffered output for the channel before the
+command returns, even if the channel is in nonblocking mode.  It also
+discards any buffered and unread input.  This command returns an empty
+string.  An error occurs if this command is applied to channels whose
+underlying file or device does not support seeking.
+.PP
+Note that \fIoffset\fR values are byte offsets, not character offsets.
+Both \fBchan seek\fR and \fBchan tell\fR operate in terms of bytes,
+not characters, unlike \fBchan read\fR.
+.RE
+.TP
+\fBchan tell \fIchannelId\fR
+.
+Returns a number giving the current access position within the
+underlying data stream for the channel named \fIchannelId\fR. This
+value returned is a byte offset that can be passed to \fBchan seek\fR
+in order to set the channel to a particular position.  Note that this
+value is in terms of bytes, not characters like \fBchan read\fR.  The
+value returned is -1 for channels that do not support seeking.
+.TP
+\fBchan truncate \fIchannelId\fR ?\fIlength\fR?
+.
+Sets the byte length of the underlying data stream for the channel
+named \fIchannelId\fR to be \fIlength\fR (or to the current byte
+offset within the underlying data stream if \fIlength\fR is
+omitted). The channel is flushed before truncation.
+.SH EXAMPLE
+This opens a file using a known encoding (CP1252, a very common encoding
+on Windows), searches for a string, rewrites that part, and truncates the
+file after a further two lines.
+.PP
+.CS
+set f [open somefile.txt r+]
+\fBchan configure\fR $f -encoding cp1252
+set offset 0
+
+\fI# Search for string "FOOBAR" in the file\fR
+while {[\fBchan gets\fR $f line] >= 0} {
+   set idx [string first FOOBAR $line]
+   if {$idx > -1} {
+      \fI# Found it; rewrite line\fR
+
+      \fBchan seek\fR $f [expr {$offset + $idx}]
+      \fBchan puts\fR -nonewline $f BARFOO
+
+      \fI# Skip to end of following line, and truncate\fR
+      \fBchan gets\fR $f
+      \fBchan gets\fR $f
+      \fBchan truncate\fR $f
+
+      \fI# Stop searching the file now\fR
+      break
+   }
+
+   \fI# Save offset of start of next line for later\fR
+   set offset [\fBchan tell\fR $f]
+}
+\fBchan close\fR $f
+.CE
+.SH "SEE ALSO"
+close(n), eof(n), fblocked(n), fconfigure(n), fcopy(n), file(n),
+fileevent(n), flush(n), gets(n), open(n), puts(n), read(n), seek(n),
+socket(n), tell(n), refchan(n)
+.SH KEYWORDS
+channel, input, output, events, offset
diff --git a/doc/clock.n b/doc/clock.n
index 8e00c43..600722b 100644
--- a/doc/clock.n
+++ b/doc/clock.n
@@ -1,259 +1,890 @@
 '\"
-'\" Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans.
-'\" Copyright (c) 1995-1997 Sun Microsystems, Inc.
-'\" Copyright (c) 1998-1999 Scriptics Corporation
-'\" Copyright (c) 2002 ActiveState Corporation
+'\" Generated from file './doc/clock.dt' by tcllib/doctools with format 'nroff'
+'\" Copyright (c) 2004 Kevin B. Kenny <kennykb@acm.org>. All rights reserved.
 '\"
-'\" This documentation is derived from the time and date facilities of
-'\" TclX, by Mark Diekhans and Karl Lehenbauer.
-'\" 
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\" 
 .so man.macros
-.TH clock n 8.4 Tcl "Tcl Built-In Commands"
+.TH "clock" n 8.5 Tcl "Tcl Built-In Commands"
 .BS
-'\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-clock \- Obtain and manipulate time
-.SH SYNOPSIS
-\fBclock \fIoption\fR ?\fIarg arg ...\fR?
+clock \- Obtain and manipulate dates and times
+.SH "SYNOPSIS"
+package require \fBTcl 8.5\fR
+.sp
+\fBclock add\fR \fItimeVal\fR ?\fIcount unit...\fR? ?\fI\-option value\fR?
+.sp
+\fBclock clicks\fR ?\fI\-option\fR?
+.sp
+\fBclock format\fR \fItimeVal\fR ?\fI\-option value\fR...?
+.sp
+\fBclock microseconds\fR 
+.sp
+\fBclock milliseconds\fR 
+.sp
+\fBclock scan\fR \fIinputString\fR ?\fI\-option value\fR...?
+.sp
+\fBclock seconds\fR 
+.sp
 .BE
-
-.SH DESCRIPTION
-.PP
-This command performs one of several operations that may obtain
-or manipulate strings or values that represent some notion of
-time.  The \fIoption\fR argument determines what action is carried
-out by the command.  The legal \fIoptions\fR (which may be
-abbreviated) are:
-.VS 8.3
-.TP
-\fBclock clicks\fR ?\fB\-milliseconds\fR?
-Return a high-resolution time value as a system-dependent integer
-value.  The unit of the value is system-dependent but should be the
-highest resolution clock available on the system such as a CPU cycle
-counter. If \fB\-milliseconds\fR is specified, then the value is
-guaranteed to be of millisecond granularity.
-This value should only be used for the relative measurement
-of elapsed time.
-.VE 8.3
-.TP
-\fBclock format \fIclockValue\fR ?\fB\-format \fIstring\fR? ?\fB\-gmt \fIboolean\fR?
-Converts an integer time value, typically returned by
-\fBclock seconds\fR, \fBclock scan\fR, or the \fBatime\fR or \fBmtime\fR
-options of the \fBfile\fR command, to human-readable
-form.  If the \fB\-format\fR argument is present the next argument is a
-string that describes how the date and time are to be formatted.
-Field descriptors consist of a \fB%\fR followed by a field
-descriptor character.  All other characters are copied into the result.
-Valid field descriptors are:
+.SH "DESCRIPTION"
+.PP
+The \fBclock\fR command performs several operations that obtain and
+manipulate values that represent times.  The command supports several
+subcommands that determine what action is carried out by the command.
+.TP
+\fBclock add\fR \fItimeVal\fR ?\fIcount unit...\fR? ?\fI\-option value\fR?
+Adds a (possibly negative) offset to a time that is expressed as an
+integer number of seconds.  See \fBCLOCK ARITHMETIC\fR for a full description.
+.TP
+\fBclock clicks\fR ?\fI\-option\fR?
+If no \fI\-option\fR argument is supplied, returns a high-resolution
+time value as a system-dependent integer value.  The unit of the value
+is system-dependent but should be the highest resolution clock available
+on the system such as a CPU cycle counter.  See \fBHIGH RESOLUTION TIMERS\fR for a full description.
 .RS
-.IP \fB%%\fR
-Insert a %.
-.IP \fB%a\fR
-Abbreviated weekday name (Mon, Tue, etc.).
-.IP \fB%A\fR
-Full weekday name (Monday, Tuesday, etc.).
-.IP \fB%b\fR
-Abbreviated month name (Jan, Feb, etc.).
-.IP \fB%B\fR
-Full month name.
-.VS 8.4
-.IP \fB%c\fR
-Locale specific date and time.  The format for date and time
-in the default "C" locale on Unix/Mac is "%a %b %d %H:%M:%S %Y".
-On Windows, this value is the locale specific long date and time, as
-specified in the Regional Options control panel settings.
-.IP \fB%C\fR
-First two digits of the four-digit year (19 or 20).
-.VE 8.4
-.IP \fB%d\fR
-Day of month (01 - 31).
-.VS 8.4
-'\" Since the inclusion of compat/strftime.c, %D, %e, %h should work on all
-'\" platforms.
-.IP \fB%D\fR
-Date as %m/%d/%y.
-.IP \fB%e\fR
-Day of month (1 - 31), no leading zeros.
-.IP \fB%g\fR
-The ISO8601 year number corresponding to the ISO8601 week (%V), expressed
-as a two-digit year-of-the-century, with leading zero if necessary.
-.IP \fB%G\fR
-The ISO8601 year number corresponding to the ISO8601 week (%V), expressed
-as a four-digit number.
-.IP \fB%h\fR
-Abbreviated month name.
-.VE 8.4
-.IP \fB%H\fR
-Hour in 24-hour format (00 - 23).
-.VS 8.4
-.IP \fB%I\fR
-Hour in 12-hour format (01 - 12).
-.VE 8.4
-.IP \fB%j\fR
-Day of year (001 - 366).
-.VS 8.4
-.IP \fB%k\fR
-Hour in 24-hour format, without leading zeros (0 - 23).
-.IP \fB%l\fR
-Hour in 12-hour format, without leading zeros (1 - 12).
-.VE 8.4
-.IP \fB%m\fR
-Month number (01 - 12).
-.IP \fB%M\fR
-Minute (00 - 59).
-.VS 8.4
-.IP \fB%n\fR
-Insert a newline.
-.VE 8.4
-.IP \fB%p\fR
-AM/PM indicator.
-.VS 8.4
-.IP \fB%r\fR
-Time in a locale-specific "meridian" format.  The "meridian"
-format in the default "C" locale is "%I:%M:%S %p".
-.IP \fB%R\fR
-Time as %H:%M.
-.IP \fB%s\fR
-Count of seconds since the epoch, expressed as a decimal integer.
-.VE 8.4
-.IP \fB%S\fR
-Seconds (00 - 59).
-.VS 8.4
-.IP \fB%t\fR
-Insert a tab.
-.IP \fB%T\fR
-Time as %H:%M:%S.
-.IP \fB%u\fR
-Weekday number (Monday = 1, Sunday = 7).
-.VE 8.4
-.IP \fB%U\fR
-Week of year (00 - 52), Sunday is the first day of the week.
-.VS 8.4
-.IP \fB%V\fR
-Week of year according to ISO-8601 rules.  Week 1 of a given
-year is the week containing 4 January.
-.IP \fB%w\fR
-Weekday number (Sunday = 0, Saturday = 6).
-.VE 8.4
-.IP \fB%W\fR
-Week of year (00 - 52), Monday is the first day of the week.
-.VS 8.4
-.IP \fB%x\fR
-Locale specific date format.  The format for a date in the default "C"
-locale for Unix/Mac is "%m/%d/%y".
-On Windows, this value is the locale specific short date format, as
-specified in the Regional Options control panel settings.
-.IP \fB%X\fR
-Locale specific 24-hour time format.  The format for a 
-24-hour time in the default "C" locale for Unix/Mac is "%H:%M:%S".
-On Windows, this value is the locale specific time format, as
-specified in the Regional Options control panel settings.
-.VE 8.4
-.IP \fB%y\fR
-Year without century (00 - 99).
-.IP \fB%Y\fR
-Year with century (e.g. 1990)
-.IP \fB%Z\fR
-Time zone name.
+.PP
+If the \fI\-option\fR argument is \fI\-milliseconds\fR, then the command
+is synonymous with \fBclock milliseconds\fR (see below).  This
+usage is obsolete, and \fBclock milliseconds\fR is to be
+considered the preferred way of obtaining a count of milliseconds.
+.PP
+If the \fI\-option\fR argument is \fI\-microseconds\fR, then the command
+is synonymous with \fBclock microseconds\fR (see below).  This
+usage is obsolete, and \fBclock microseconds\fR is to be
+considered the preferred way of obtaining a count of microseconds.
 .RE
-.VS 8.4
-.sp
-'\" All the field descriptors should be portable now that
-'\" compat/strftime.c is in place, with the possible exception
-'\" of the time zone name.
-'\".RS
-'\"In addition, the following field descriptors may be supported on some
-'\"systems (e.g. Unix but not Windows):
-'\".IP \fB%D\fR
-'\"Date as %m/%d/%y.
-'\".IP \fB%e\fR
-'\"Day of month (1 - 31), no leading zeros.
-'\".IP \fB%h\fR
-'\"Abbreviated month name.
-'\".IP \fB%n\fR
-'\"Insert a newline.
-'\".IP \fB%r\fR
-'\"Time as %I:%M:%S %p.
-'\".IP \fB%R\fR
-'\"Time as %H:%M.
-'\".IP \fB%t\fR
-'\"Insert a tab.
-'\".IP \fB%T\fR
-'\"Time as %H:%M:%S.
-'\".RE
-'\".sp
-.VE 8.4
+.TP
+\fBclock format\fR \fItimeVal\fR ?\fI\-option value\fR...?
+Formats a time that is expressed as an integer number of seconds into a format
+intended for consumption by users or external programs.
+See \fBFORMATTING TIMES\fR for a full description.
+.TP
+\fBclock microseconds\fR 
+Returns the current time as an integer number of microseconds.  See \fBHIGH RESOLUTION TIMERS\fR for a full description.
+.TP
+\fBclock milliseconds\fR 
+Returns the current time as an integer number of milliseconds.  See \fBHIGH RESOLUTION TIMERS\fR for a full description.
+.TP
+\fBclock scan\fR \fIinputString\fR ?\fI\-option value\fR...?
+Scans a time that is expressed as a character string and produces an
+integer number of seconds.
+See \fBSCANNING TIMES\fR for a full description.
+.TP
+\fBclock seconds\fR 
+Returns the current time as an integer number of seconds.
+.SS "PARAMETERS"
+.TP
+\fIcount\fR
+An integer representing a count of some unit of time.  See
+\fBCLOCK ARITHMETIC\fR for the details.
+.TP
+\fItimeVal\fR
+An integer value passed to the \fBclock\fR command that represents an
+absolute time as a number of seconds from the \fIepoch time\fR of
+1 January 1970, 00:00 UTC.  Note that the count of seconds does not
+include any leap seconds; seconds are counted as if each UTC day has
+exactly 86400 seconds.  Tcl responds to leap seconds by speeding or
+slowing its clock by a tiny fraction for some minutes until it is
+back in sync with UTC; its data model does not represent minutes that
+have 59 or 61 seconds.
+.TP
+\fIunit\fR
+One of the words, \fBseconds\fR, \fBminutes\fR, \fBhours\fR,
+\fBdays\fR, \fBweeks\fR, \fBmonths\fR, or \fByears\fR, or
+any unique prefix of such a word. Used in conjunction with \fIcount\fR
+to identify an interval of time, for example, \fI3 seconds\fR or
+\fI1 year\fR.
+.SS "OPTIONS"
+.TP
+\fB\-base\fR time
+Specifies that any relative times present in a \fBclock scan\fR command
+are to be given relative to \fItime\fR.  \fItime\fR must be expressed as
+a count of nominal seconds from the epoch time of 1 January 1970, 00:00 UTC.
+.TP
+\fB\-format\fR format
+Specifies the desired output format for \fBclock format\fR or the
+expected input format for \fBclock scan\fR.  The \fIformat\fR string consists
+of any number of characters other than the per-cent sign
+.PQ \fB%\fR
+interspersed with any number of \fIformat groups\fR, which are two-character
+sequences beginning with the per-cent sign.  The permissible format groups,
+and their interpretation, are described under \fBFORMAT GROUPS\fR.
+.RS
+.PP
+On \fBclock format\fR, the default format is
+.CS
+%a %b %d %H:%M:%S %z %Y
+.CE
+.PP
+On \fBclock scan\fR, the lack of a \fI\-format\fR option indicates that a
+.QW "free format scan"
+is requested; see \fBFREE FORM SCAN\fR for a description of what happens.
+.RE
+.TP
+\fB\-gmt\fR boolean
+If \fIboolean\fR is true, specifies that a time specified to \fBclock add\fR,
+\fBclock format\fR or \fBclock scan\fR should be processed in
+UTC.  If \fIboolean\fR is false, the processing defaults to the local time
+zone.  This usage is obsolete; the correct current usage is to
+specify the UTC time zone with
+.QW "\fB\-timezone\fR \fI:UTC\fR"
+or any of the equivalent ways to specify it.
+.TP
+\fB\-locale\fR localeName
+Specifies that locale-dependent scanning and formatting (and date arithmetic
+for dates preceding the adoption of the Gregorian calendar) is to be done in
+the locale identified by \fIlocaleName\fR.  The locale name may be any of
+the locales acceptable to the \fBmsgcat\fR package, or it may be the special
+name \fIsystem\fR, which represents the current locale of the process, or
+the null string, which represents Tcl's default locale.
+.RS
+.PP
+The effect of locale on scanning and formatting is discussed in the
+descriptions of the individual format groups under \fBFORMAT GROUPS\fR.
+The effect of locale on clock arithmetic is discussed under
+\fBCLOCK ARITHMETIC\fR.
+.RE
+.TP
+\fB\-timezone\fR zoneName
+Specifies that clock arithmetic, formatting, and scanning are to be done
+according to the rules for the time zone specified by \fIzoneName\fR.
+The permissible values, and their interpretation, are discussed under
+\fBTIME ZONES\fR.
+On subcommands that expect a \fB\-timezone\fR argument, the default
+is to use the \fIcurrent time zone\fR.  The current time zone is
+determined, in order of preference, by:
 .RS
-If the \fB\-format\fR argument is not specified, the format string 
-\fB"%a %b %d %H:%M:%S %Z %Y"\fR is used.  If the \fB\-gmt\fR argument
-is present the next argument must be a boolean which if true specifies
-that the time will be formatted as Greenwich Mean Time. If false
-then the local timezone will be used as defined by the operating
-environment.
+.IP [1]
+the environment variable \fBTCL_TZ\fR.
+.IP [2]
+the environment variable \fBTZ\fR.
+.IP [3]
+on Windows systems, the time zone settings from the Control Panel.
 .RE
+If none of these is present, the C \fBlocaltime\fR and \fBmktime\fR
+functions are used to attempt to convert times between local and
+Greenwich.  On 32-bit systems, this approach is likely to have bugs,
+particularly for times that lie outside the window (approximately the
+years 1902 to 2037) that can be represented in a 32-bit integer.
+.SH "CLOCK ARITHMETIC"
+The \fBclock add\fR command performs clock arithmetic on a value
+(expressed as nominal seconds from the epoch time of 1 January 1970, 00:00 UTC)
+given as its first argument.  The remaining arguments (other than the
+possible \fB\-timezone\fR, \fB\-locale\fR and \fB\-gmt\fR options)
+are integers and keywords in alternation, where the keywords are chosen
+from \fBseconds\fR, \fBminutes\fR, \fBhours\fR,
+\fBdays\fR, \fBweeks\fR, \fBmonths\fR, or \fByears\fR, or
+any unique prefix of such a word.
+.PP
+Addition of seconds, minutes and hours is fairly straightforward;
+the given time increment (times sixty for minutes, or 3600 for hours)
+is simply added to the \fItimeVal\fR given
+to the \fBclock add\fR command.  The result is interpreted as
+a nominal number of seconds from the Epoch.
+.PP
+Surprising results
+may be obtained when crossing a point at which a leap second is
+inserted or removed; the \fBclock add\fR command simply ignores
+leap seconds and therefore assumes that times come in sequence,
+23:59:58, 23:59:59, 00:00:00.  (This assumption is handled by
+the fact that Tcl's model of time reacts to leap seconds by speeding
+or slowing the clock by a minuscule amount until Tcl's time
+is back in step with the world.
+.PP
+The fact that adding and subtracting hours is defined in terms of
+absolute time means that it will add fixed amounts of time in time zones
+that observe summer time (Daylight Saving Time).  For example,
+the following code sets the value of \fBx\fR to \fB04:00:00\fR because
+the clock has changed in the interval in question.
+.CS
+set s [\fBclock scan\fR {2004-10-30 05:00:00} \e
+           -format {%Y-%m-%d %H:%M:%S} \e
+           -timezone :America/New_York]
+set a [\fBclock add\fR $s 24 hours -timezone :America/New_York]
+set x [\fBclock format\fR $a \e
+           -format {%H:%M:%S} -timezone :America/New_York]
+.CE
+.PP
+Adding and subtracting days and weeks is accomplished by converting
+the given time to a calendar day and time of day in the appropriate
+time zone and locale.  The requisite number of days (weeks are converted
+to days by multiplying by seven) is added to the calendar day, and
+the date and time are then converted back to a count of seconds from
+the epoch time.
+.PP
+Adding and subtracting a given number of days across the point that
+the time changes at the start or end of summer time (Daylight Saving Time)
+results in the \fIsame local time\fR on the day in question.  For
+instance, the following code sets the value of \fBx\fR to \fB05:00:00\fR.
+.CS
+set s [\fBclock scan\fR {2004-10-30 05:00:00} \e
+           -format {%Y-%m-%d %H:%M:%S} \e
+           -timezone :America/New_York]
+set a [\fBclock add\fR $s 1 day -timezone :America/New_York]
+set x [\fBclock format\fR $a \e
+           -format {%H:%M:%S} -timezone :America/New_York]
+.CE
+.PP
+In cases of ambiguity, where the same local time happens twice
+on the same day, the earlier time is used.  In cases where the conversion
+yields an impossible time (for instance, 02:30 during the Spring
+Daylight Saving Time change using US rules), the time is converted
+as if the clock had not changed.  Thus, the following code
+will set the value of \fBx\fR to \fB03:30:00\fR.
+.CS
+set s [\fBclock scan\fR {2004-04-03 02:30:00} \e
+           -format {%Y-%m-%d %H:%M:%S} \e
+           -timezone :America/New_York]
+set a [\fBclock add\fR $s 1 day -timezone :America/New_York]
+set x [\fBclock format\fR $a \e
+           -format {%H:%M:%S} -timezone :America/New_York]
+.CE
+.PP
+Adding a given number of days or weeks works correctly across the conversion
+between the Julian and Gregorian calendars; the omitted days are skipped.
+The following code sets \fBz\fR to \fB1752-09-14\fR.
+.CS
+set x [\fBclock scan\fR 1752-09-02 -format %Y-%m-%d -locale en_US]
+set y [\fBclock add\fR $x 1 day -locale en_US]
+set z [\fBclock format\fR $y -format %Y-%m-%d -locale en_US]
+.CE
+.PP
+In the bizarre case that adding the given number of days yields a date
+that does not exist because it falls within the dropped days of the
+Julian-to-Gregorian conversion, the date is converted as if it was
+on the Julian calendar.
+.PP
+Adding a number of months, or a number of years, is similar; it
+converts the given time to a calendar date and time of day.  It then
+adds the requisite number of months or years, and reconverts the resulting
+date and time of day to an absolute time.
+.PP
+If the resulting date is impossible because the month has too few days
+(for example, when adding 1 month to 31 January), the last day of the
+month is substituted.  Thus, adding 1 month to 31 January will result in
+28 February in a common year or 29 February in a leap year.
+.PP
+The rules for handling anomalies relating to summer time and to the
+Gregorian calendar are the same when adding/subtracting months and
+years as they are when adding/subtracting days and weeks.
+.PP
+If multiple \fIcount unit\fR pairs are present on the command, they
+are evaluated consecutively, from left to right.
+.SH "HIGH RESOLUTION TIMERS"
+Most of the subcommands supported by the \fBclock\fR command deal with
+times represented as a count of seconds from the epoch time, and this is the
+representation that \fBclock seconds\fR returns.  There are three exceptions,
+which are all intended for use where higher-resolution times are required.
+\fBclock milliseconds\fR returns the count of milliseconds from the
+epoch time, and \fBclock microseconds\fR returns the count of microseconds
+from the epoch time. In addition, there is a \fBclock clicks\fR command
+that returns a platform-dependent high-resolution timer.  Unlike
+\fBclock seconds\fR and \fBclock milliseconds\fR, the value
+of \fBclock clicks\fR is not guaranteed to be tied to any fixed
+epoch; it is simply intended to be the most precise interval timer
+available, and is intended only for relative timing studies such as
+benchmarks.
+.SH "FORMATTING TIMES"
+The \fBclock format\fR command produces times for display to a user
+or writing to an external medium.  The command accepts times that are
+expressed in seconds from the epoch time of 1 January 1970, 00:00 UTC,
+as returned by \fBclock seconds\fR, \fBclock scan\fR, \fBclock add\fR,
+\fBfile atime\fR or \fBfile mtime\fR.
+.PP
+If a \fB\-format\fR option is present, the following argument is
+a string that specifies how the date and time are to be formatted.
+The string consists
+of any number of characters other than the per-cent sign
+.PQ \fB%\fR
+interspersed with any number of \fIformat groups\fR, which are two-character
+sequences beginning with the per-cent sign.  The permissible format groups,
+and their interpretation, are described under \fBFORMAT GROUPS\fR.
+.PP
+If a \fB\-timezone\fR option is present, the following
+argument is a string that specifies the time zone in which the date and time
+are to be formatted.  As an alternative to
+.QW "\fB\-timezone\fR \fI:UTC\fR" ,
+the obsolete usage
+.QW "\fB\-gmt\fR \fItrue\fR"
+may be used.  See
+\fBTIME ZONES\fR for the permissible variants for the time zone.
+.PP
+If a \fB\-locale\fR option is present, the following argument is
+a string that specifies the locale in which the time is to be formatted,
+in the same format that is used for the \fBmsgcat\fR package.  Note
+that the default, if \fB\-locale\fR is not specified, is the root locale
+\fB{}\fR rather than the current locale.  The current locale may
+be obtained by using \fB\-locale\fR \fBcurrent\fR.
+In addition, some platforms support a \fBsystem\fR locale that
+reflects the user's current choices.  For instance, on Windows, the
+format that the user has selected from dates and times in the Control
+Panel can be obtained by using the \fBsystem\fR locale.  On
+platforms that do not define a user selection of date and time formats
+separate from \fBLC_TIME\fR, \fB\-locale\fR \fBsystem\fR is
+synonymous with \fB\-locale\fR \fBcurrent\fR.
+.SH "SCANNING TIMES"
+The \fBclock scan\fR command accepts times that are formatted as
+strings and converts them to counts of seconds from the epoch time
+of 1 January 1970, 00:00 UTC.  It normally takes a \fB\-format\fR
+option that is followed by a string describing
+the expected format of the input.  (See
+\fBFREE FORM SCAN\fR for the effect of \fBclock scan\fR
+without such an argument.)  The string consists of any number of
+characters other than the per-cent sign
+.PQ \fB%\fR "" ,
+interspersed with any number of \fIformat groups\fR, which are two-character
+sequences beginning with the per-cent sign.  The permissible format groups,
+and their interpretation, are described under \fBFORMAT GROUPS\fR.
+.PP
+If a \fB\-timezone\fR option is present, the following
+argument is a string that specifies the time zone in which the date and time
+are to be interpreted.  As an alternative to \fB\-timezone\fR \fI:UTC\fR,
+the obsolete usage \fB\-gmt\fR \fItrue\fR may be used.  See
+\fBTIME ZONES\fR for the permissible variants for the time zone.
+.PP
+If a \fB\-locale\fR option is present, the following argument is
+a string that specifies the locale in which the time is to be interpreted,
+in the same format that is used for the \fBmsgcat\fR package.  Note
+that the default, if \fB\-locale\fR is not specified, is the root locale
+\fB{}\fR rather than the current locale.  The current locale may
+be obtained by using \fB\-locale\fR \fBcurrent\fR.
+In addition, some platforms support a \fBsystem\fR locale that
+reflects the user's current choices.  For instance, on Windows, the
+format that the user has selected from dates and times in the Control
+Panel can be obtained by using the \fBsystem\fR locale.  On
+platforms that do not define a user selection of date and time formats
+separate from \fBLC_TIME\fR, \fB\-locale\fR \fBsystem\fR is
+synonymous with \fB\-locale\fR \fBcurrent\fR.
+.PP
+If a \fB\-base\fR option is present, the following argument is
+a time (expressed in seconds from the epoch time) that is used as
+a \fIbase time\fR for interpreting relative times.  If no
+\fB\-base\fR option is present, the base time is the current time.
+.PP
+Scanning of times in fixed format works by determining three things:
+the date, the time of day, and the time zone.  These three are then
+combined into a point in time, which is returned as the number of seconds
+from the epoch.
+.PP
+Before scanning begins, the format string is preprocessed
+to replace \fB%c\fR, \fB%Ec\fR, \fB%x\fR, \fB%Ex\fR,
+\fB%X\fR. \fB%Ex\fR, \fB%r\fR, \fB%R\fR, \fB%T\fR,
+\fB%D\fR, \fB%EY\fR and \fB%+\fR format groups with counterparts
+that are appropriate to the current locale and contain none of the
+above groups.  For instance, \fB%D\fR will (in the \fBen_US\fR locale)
+be replaced with \fB%m/%d/%Y\fR.
+.PP
+The date is determined according to the fields that are present in the
+preprocessed format string.  In order of preference:
+.IP [1]
+If the string contains a \fB%s\fR format group, representing
+seconds from the epoch, that group is used to determine the date.
+.IP [2]
+If the string contains a \fB%J\fR format group, representing
+the Julian Day Number, that group is used to determine the date.
+.IP [3]
+If the string contains a complete set of format groups specifying
+century, year, month, and day of month; century, year, and day of year;
+or ISO8601 fiscal year, week of year, and day of week; those groups are
+combined and used to determine the date.  If more than one complete
+set is present, the one at the rightmost position in the string is
+used.
+.IP [4]
+If the string lacks a century but contains a set of format
+groups specifying year of century, month and day of month; year of
+century and day of year; or two-digit ISO8601 fiscal year, week of year,
+and day of week; those groups are
+combined and used to determine the date.  If more than one complete
+set is present, the one at the rightmost position in the string is
+used.  The year is presumed to lie in the range 1938 to 2037 inclusive.
+.IP [5]
+If the string entirely lacks any specification for the year
+(or contains the year only on the locale's alternative calendar)
+and contains a set of format groups specifying month and day of month,
+day of year, or week of year and day of week, those groups are
+combined and used to determine the date.  If more than one complete
+set is present, the one at the rightmost position in the string is
+used.  The year is determined by interpreting the base time in the given
+time zone.
+.IP [6]
+If the string contains none of the above sets, but has a day
+of the month or day of the week, the day of the month or day of the week
+are used to determine the date by interpreting the base time in the
+given time zone and returning the given day of the current week or month.
+(The week runs from Monday to Sunday, ISO8601-fashion.)  If both day
+of month and day of week are present, the day of the month takes
+priority.
+.IP [7]
+If none of the above rules results in a usable date, the date
+of the base time in the given time zone is used.
+.PP
+The time is also determined according to the fields that are present in the
+preprocessed format string.  In order of preference:
+.IP [1]
+If the string contains a \fB%s\fR format group, representing
+seconds from the epoch, that group determines the time of day.
+.IP [2]
+If the string contains either an hour on the 24-hour clock
+or an hour on the 12-hour clock plus an AM/PM indicator, that hour determines
+the hour of the day.  If the string further contains a group specifying
+the minute of the hour, that group combines with the hour.  If the string
+further contains a group specifying the second of the minute, that group
+combines with the hour and minute.
+.IP [3]
+If the string contains neither a \fB%s\fR format group nor
+a group specifying the hour of the day, then midnight (\fB00:00\fR, the start
+of the given date) is used.
+The time zone is determined by either the \fB\-timezone\fR or \fB\-gmt\fR
+options, or by using the current time zone.
+.PP
+If a format string lacks a \fB%z\fR or \fB%Z\fR format group,
+it is possible for the time to be ambiguous because it appears twice
+in the same day, once without and once with Daylight Saving Time.
+If this situation occurs, the first occurrence of the time is chosen.
+(For this reason, it is wise to have the input string contain the
+time zone when converting local times.  This caveat does not apply to
+UTC times.)
+.SH "FORMAT GROUPS"
+The following format groups are recognized by the \fBclock scan\fR and
+\fBclock format\fR commands.
+.TP
+\fB%a\fR
+On output, receives an abbreviation (\fIe.g.,\fR \fBMon\fR) for the day
+of the week in the given locale.  On input, matches the name of the day
+of the week in the given locale (in either abbreviated or full form, or
+any unique prefix of either form).
+.TP
+\fB%A\fR
+On output, receives the full name (\fIe.g.,\fR \fBMonday\fR) of the day
+of the week in the given locale.  On input, matches the name of the day
+of the week in the given locale (in either abbreviated or full form, or
+any unique prefix of either form).
+.TP
+\fB%b\fR
+On output, receives an abbreviation (\fIe.g.,\fR \fBJan\fR) for the name
+of the month in the given locale.  On input, matches the name of the month
+in the given locale (in either abbreviated or full form, or
+any unique prefix of either form).
+.TP
+\fB%B\fR
+On output, receives the full name (\fIe.g.,\fR \fBJanuary\fR)
+of the month in the given locale.  On input, matches the name of the month
+in the given locale (in either abbreviated or full form, or
+any unique prefix of either form).
+.TP
+\fB%c\fR
+On output, receives a localized representation of date and time of day;
+the localized representation is expected to use the Gregorian calendar.
+On input, matches whatever \fB%c\fR produces.
 .TP
-\fBclock scan \fIdateString\fR ?\fB\-base \fIclockVal\fR? ?\fB\-gmt \fIboolean\fR?
-Convert \fIdateString\fR to an integer clock value (see \fBclock seconds\fR).
-This command can parse and convert virtually any standard date and/or time
-string, which can include standard time zone mnemonics.  If only a time is
-specified, the current date is assumed.  If the string does not contain a
-time zone mnemonic, the local time zone is assumed, unless the \fB\-gmt\fR 
+\fB%C\fR
+On output, receives the number of the century in Indo-Arabic numerals.
+On input, matches one or two digits, possibly with leading whitespace,
+that are expected to be the number of the century.
+.TP
+\fB%d\fR
+On output, produces the number of the day of the month, as two decimal
+digits.  On input, matches one or two digits, possibly with leading
+whitespace, that are expected to be the number of the day of the month.
+.TP
+\fB%D\fR
+This format group is synonymous with \fB%m/%d/%Y\fR.  It should be
+used only in exchanging data within the \fBen_US\fR locale, since
+other locales typically do not use this order for the fields of the date.
+.TP
+\fB%e\fR
+On output, produces the number of the day of the month, as one or
+two decimal digits (with a leading blank for one-digit dates).
+On input, matches one or two digits, possibly with leading
+whitespace, that are expected to be the number of the day of the month.
+.TP
+\fB%Ec\fR
+On output, produces a locale-dependent representation of the date and
+time of day in the locale's alternative calendar.  On input, matches
+whatever \fB%Ec\fR produces.  The locale's alternative calendar need not
+be the Gregorian calendar.
+.TP
+\fB%EC\fR
+On output, produces a locale-dependent name of an era in the locale's
+alternative calendar.  On input, matches the name of the era or any
+unique prefix.
+.TP
+\fB%EE\fR
+On output, produces the string \fBB.C.E.\fR or \fBC.E.\fR, or a
+string of the same meaning in the locale, to indicate whether \fB%Y\fR refers
+to years before or after Year 1 of the Common Era.  On input, accepts
+the string \fBB.C.E.\fR, \fBB.C.\fR, \fBC.E.\fR, \fBA.D.\fR, or the
+abbreviation appropriate to the current locale, and uses it to fix
+whether \fB%Y\fR refers to years before or after Year 1 of the 
+Common Era.
+.TP
+\fB%Ex\fR
+On output, produces a locale-dependent representation of the date
+in the locale's alternative calendar.  On input, matches
+whatever \fB%Ex\fR produces.  The locale's alternative calendar need not
+be the Gregorian calendar.
+.TP
+\fB%EX\fR
+On output, produces a locale-dependent representation of the
+time of day in the locale's alternative numerals.  On input, matches
+whatever \fB%EX\fR produces.
+.TP
+\fB%Ey\fR
+On output, produces a locale-dependent number of the year of the era
+in the locale's alternative calendar and numerals.  On input, matches
+such a number.
+.TP
+\fB%EY\fR
+On output, produces a representation of the year in the locale's
+alternative calendar and numerals.  On input, matches what \fB%EY\fR
+produces.  Often synonymous with \fB%EC%Ey\fR.
+.TP
+\fB%g\fR
+On output, produces a two-digit year number suitable for use with
+the week-based ISO8601 calendar; that is, the year number corresponds
+to the week number produced by \fB%V\fR.  On input, accepts such
+a two-digit year number, possibly with leading whitespace.
+.TP
+\fB%G\fR
+On output, produces a four-digit year number suitable for use with
+the week-based ISO8601 calendar; that is, the year number corresponds
+to the week number produced by \fB%V\fR.  On input, accepts such
+a four-digit year number, possibly with leading whitespace.
+.TP
+\fB%h\fR
+This format group is synonymous with \fB%b\fR.
+.TP
+\fB%H\fR
+On output, produces a two-digit number giving the hour of the day
+(00-23) on a 24-hour clock.  On input, accepts such a number.
+.TP
+\fB%I\fR
+On output, produces a two-digit number giving the hour of the day
+(12-11) on a 12-hour clock.  On input, accepts such a number.
+.TP
+\fB%j\fR
+On output, produces a three-digit number giving the day of the year
+(001-366).  On input, accepts such a number.
+.TP
+\fB%J\fR
+On output, produces a string of digits giving the Julian Day Number.
+On input, accepts a string of digits and interprets it as a Julian Day Number.
+The Julian Day Number is a count of the number of calendar days
+that have elapsed since 1 January, 4713 BCE of the proleptic
+Julian calendar.  The epoch time of 1 January 1970 corresponds
+to Julian Day Number 2440588.
+.TP
+\fB%k\fR
+On output, produces a one- or two-digit number giving the hour of the day
+(0-23) on a 24-hour clock.  On input, accepts such a number.
+.TP
+\fB%l\fR
+On output, produces a one- or two-digit number giving the hour of the day
+(12-11) on a 12-hour clock.  On input, accepts such a number.
+.TP
+\fB%m\fR
+On output, produces the number of the month (01-12) with exactly two
+digits.  On input, accepts two digits and interprets them as the number
+of the month.
+.TP
+\fB%M\fR
+On output, produces the number of the minute of the hour (00-59)
+with exactly two digits.  On input, accepts two digits and interprets them
+as the number of the minute of the hour.
+.TP
+\fB%N\fR
+On output, produces the number of the month (1-12) with one or two digits,
+and a leading blank for one-digit dates.
+On input, accepts one or two digits, possibly with leading whitespace,
+and interprets them as the number of the month.
+.TP
+\fB%Od\fR, \fB%Oe\fR, \fB%OH\fR, \fB%OI\fR, \fB%Ok\fR, \fB%Ol\fR, \fB%Om\fR, \fB%OM\fR, \fB%OS\fR, \fB%Ou\fR, \fB%Ow\fR, \fB%Oy\fR
+All of these format groups are synonymous with their counterparts
+without the
+.QW \fBO\fR ,
+except that the string is produced and parsed in the
+locale-dependent alternative numerals.
+.TP
+\fB%p\fR
+On output, produces an indicator for the part of the day, \fBAM\fR
+or \fBPM\fR, appropriate to the given locale.  If the script of the
+given locale supports multiple letterforms, lowercase is preferred.
+On input, matches the representation \fBAM\fR or \fBPM\fR in
+the given locale, in either case.
+.TP
+\fB%P\fR
+On output, produces an indicator for the part of the day, \fBam\fR
+or \fBpm\fR, appropriate to the given locale.  If the script of the
+given locale supports multiple letterforms, uppercase is preferred.
+On input, matches the representation \fBAM\fR or \fBPM\fR in
+the given locale, in either case.
+.TP
+\fB%Q\fR
+This format group is reserved for internal use within the Tcl library.
+.TP
+\fB%r\fR
+On output, produces a locale-dependent time of day representation on a
+12-hour clock. On input, accepts whatever \fB%r\fR produces.
+.TP
+\fB%R\fR
+On output, produces a locale-dependent time of day representation on a
+24-hour clock. On input, accepts whatever \fB%R\fR produces.
+.TP
+\fB%s\fR
+On output, simply formats the \fItimeVal\fR argument as a decimal
+integer and inserts it into the output string.  On input, accepts
+a decimal integer and uses is as the time value without any further
+processing. Since \fB%s\fR uniquely determines a point in time, it
+overrides all other input formats.
+.TP
+\fB%S\fR
+On output, produces a two-digit number of the second of the minute
+(00-59). On input, accepts two digits and uses them as the second of the
+minute.
+.TP
+\fB%t\fR
+On output, produces a TAB character. On input, matches a TAB character.
+.TP
+\fB%T\fR
+Synonymous with \fB%H:%M:%S\fR.
+.TP
+\fB%u\fR
+On output, produces the number of the day of the week
+(\fB1\fR\(->Monday, \fB7\fR\(->Sunday). On input, accepts a single digit and
+interprets it as the day of the week. Sunday may be either \fB0\fR or
+\fB7\fR.
+.TP
+\fB%U\fR
+On output, produces the ordinal number of the week of the year
+(00-53). The first Sunday of the year is the first day of week 01. On
+input accepts two digits which are otherwise ignored. This format
+group is never used in determining an input date.  This interpretation
+of the week of the year was once common in US banking but is now
+largely obsolete.  See \fB%V\fR for the ISO8601 week number.
+.TP
+\fB%V\fR
+On output, produces the number of the ISO8601 week as a two digit
+number (01-53). Week 01 is the week containing January 4; or the first
+week of the year containing at least 4 days; or the week containing
+the first Thursday of the year (the three statements are
+equivalent). Each week begins on a Monday. On input, accepts the
+ISO8601 week number.
+.TP
+\fB%w\fR
+On output, produces the ordinal number of the day of the week
+(Sunday==0; Saturday==6).  On input, accepts a single digit and
+interprets it as the day of the week; Sunday may be represented as 
+either 0 or 7.  Note that \fB%w\fR is not the ISO8601 weekday number, 
+which is produced and accepted by \fB%u\fR.
+.TP
+\fB%W\fR
+On output, produces a week number (00-53) within the year; week 01
+begins on the first Monday of the year. On input, accepts two digits,
+which are otherwise ignored. This format group is never used in
+determining an input date.  It is not the ISO8601 week number; that
+week is produced and accepted by \fB%V\fR.
+.TP
+\fB%x\fR
+On output, produces the date in a locale-dependent representation. On
+input, accepts whatever \fB%x\fR produces and is used to determine
+calendar date.
+.TP
+\fB%X\fR
+On output, produces the time of day in a locale-dependent
+representation. On input, accepts whatever \fB%X\fR produces and is used
+to determine time of day.
+.TP
+\fB%y\fR
+On output, produces the two-digit year of the century. On input,
+accepts two digits, and is used to determine calendar date. The
+date is presumed to lie between 1938 and 2037 inclusive. Note
+that \fB%y\fR does not yield a year appropriate for use with the ISO8601
+week number \fB%V\fR; programs should use \fB%g\fR for that purpose.
+.TP
+\fB%Y\fR
+On output, produces the four-digit calendar year. On input,
+accepts four digits and may be used to determine calendar date. Note
+that \fB%Y\fR does not yield a year appropriate for use with the ISO8601
+week number \fB%V\fR; programs should use \fB%G\fR for that purpose.
+.TP
+\fB%z\fR
+On output, produces the current time zone, expressed in hours and
+minutes east (+hhmm) or west (\-hhmm) of Greenwich. On input, accepts a
+time zone specifier (see \fBTIME ZONES\fR below) that will be used to
+determine the time zone.
+.TP
+\fB%Z\fR
+On output, produces the current time zone's name, possibly
+translated to the given locale. On input, accepts a time zone
+specifier (see \fBTIME ZONES\fR below) that will be used to determine the
+time zone. This option should, in general, be used on input only when
+parsing RFC822 dates. Other uses are fraught with ambiguity; for
+instance, the string \fBBST\fR may represent British Summer Time or
+Brazilian Standard Time. It is recommended that date/time strings for
+use by computers use numeric time zones instead.
+.TP
+\fB%%\fR
+On output, produces a literal
+.QW \fB%\fR
+character. On input, matches a literal
+.QW \fB%\fR
+character.
+.TP
+\fB%+\fR
+Synonymous with
+.QW "\fB%a %b %e %H:%M:%S %Z %Y\fR" .
+.SH "TIME ZONES"
+When the \fBclock\fR command is processing a local time, it has several
+possible sources for the time zone to use.  In order of preference, they
+are:
+.IP [1]
+A time zone specified inside a string being parsed and matched by a \fB%z\fR
+or \fB%Z\fR format group.
+.IP [2]
+A time zone specified with the \fB\-timezone\fR option to the \fBclock\fR
+command (or, equivalently, by \fB\-gmt\fR \fB1\fR).
+.IP [3]
+A time zone specified in an environment variable \fBTCL_TZ\fR.
+.IP [4]
+A time zone specified in an environment variable \fBTZ\fR.
+.IP [5]
+The local time zone from the Control Panel on Windows systems.
+.IP [6]
+The C library's idea of the local time zone, as defined by the
+\fBmktime\fR and \fBlocaltime\fR functions.
+.PP
+In case [1] \fIonly,\fR the string is tested to see if it is one 
+of the strings:
+.CS
+ gmt     ut      utc     bst     wet     wat     at
+ nft     nst     ndt     ast     adt     est     edt
+ cst     cdt     mst     mdt     pst     pdt     yst
+ ydt     hst     hdt     cat     ahst    nt      idlw
+ cet     cest    met     mewt    mest    swt     sst
+ eet     eest    bt      it      zp4     zp5     ist
+ zp6     wast    wadt    jt      cct     jst     cast
+ cadt    east    eadt    gst     nzt     nzst    nzdt
+ idle
+.CE
+If it is a string in the above list, it designates a known
+time zone, and is interpreted as such.
+.PP
+For time zones in case [1] that do not match any of the above strings, 
+and always for cases [2]-[6], the following rules apply.
+.PP
+If the time zone begins with a colon, it is one of a
+standardized list of names like \fB:America/New_York\fR
+that give the rules for various locales.  A complete list
+of the location names is too lengthy to be listed here.
+On most Tcl installations, the definitions of the locations
+are to be found in named files in the directory
+.QW "\fI/no_backup/tools/lib/tcl8.5/clock/tzdata\fR" .
+On some Unix systems, these files are omitted, and the definitions are
+instead obtained from system files in
+.QW "\fI/usr/share/zoneinfo\fR" ,
+.QW "\fI/usr/share/lib/zoneinfo\fR"
+or
+.QW "\fI/usr/local/etc/zoneinfo\fR" .
+As a special case, the name \fB:localtime\fR refers to
+the local time zone as defined by the C library.
+.PP
+A time zone string consisting of a plus or minus sign followed by
+four or six decimal digits is interpreted as an offset in
+hours, minutes, and seconds (if six digits are present) from
+UTC.  The plus sign denotes a sign east of Greenwich;
+the minus sign one west of Greenwich.
+.PP
+A time zone string conforming to the Posix specification of the \fBTZ\fR
+environment variable will be recognized.  The specification
+may be found at
+\fIhttp://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html\fR.
+.PP
+Any other time zone string is processed by prefixing a colon and attempting
+to use it as a location name, as above.
+.SH "LOCALIZATION"
+Developers wishing to localize the date and time formatting and parsing
+are referred to \fIhttp://tip.tcl.tk/173\fR for a
+specification.
+.SH "FREE FORM SCAN"
+If the \fBclock scan\fR command is invoked without a \fB\-format\fR
+option, then it requests a \fIfree-form scan.\fR  \fI
+This form of scan is deprecated.\fR  The reason for the deprecation
+is that there are too many ambiguities. (Does the string
+.QW 2000
+represent a year, a time of day, or a quantity?)  No set of rules
+for interpreting free-form dates and times has been found to
+give unsurprising results in all cases.
+.PP
+If free-form scan is used, only the \fB\-base\fR and \fB\-gmt\fR
+options are accepted.  The \fB\-timezone\fR and \fB\-locale\fR
+options will result in an error if \fB\-format\fR is not supplied.
+.PP
+For the benefit of users who need to understand legacy code that
+uses free-form scan, the documentation for how free-form scan
+interprets a string is included here:
+.PP
+If only a time is
+specified, the current date is assumed.  If the \fIinputString\fR
+does not contain a
+time zone mnemonic, the local time zone is assumed, unless the \fB\-gmt\fR
 argument is true, in which case the clock value is calculated assuming
 that the specified time is relative to Greenwich Mean Time.
-\fB-gmt\fR, if specified, affects only the computed time value; it does not
-impact the interpretation of \fB-base\fR.
-.sp
+\fB\-gmt\fR, if specified, affects only the computed time value; it does not
+impact the interpretation of \fB\-base\fR.
+.PP
 If the \fB\-base\fR flag is specified, the next argument should contain
 an integer clock value.  Only the date in this value is used, not the
 time.  This is useful for determining the time on a specific day or
 doing other date-relative conversions.
-.sp
-The \fIdateString\fR consists of zero or more specifications of the
+.PP
+The \fIinputString\fR argument consists of zero or more specifications of the
 following form:
-.RS
 .TP
 \fItime\fR
-A time of day, which is of the form: \fIhh\fR?\fI:mm\fR?\fI:ss\fR?? 
-?\fImeridian\fR? ?\fIzone\fR? or \fIhhmm \fR?\fImeridian\fR? 
-?\fIzone\fR?. If no meridian is specified, \fIhh\fR is interpreted on
+A time of day, which is of the form: \fBhh?:mm?:ss?? ?meridian? ?zone?\fR
+or \fBhhmm ?meridian? ?zone?\fR
+If no meridian is specified, \fBhh\fR is interpreted on
 a 24-hour clock.
 .TP
 \fIdate\fR
 A specific month and day with optional year.  The
-acceptable formats are \fImm/dd\fR?\fI/yy\fR?, \fImonthname dd\fR
-?, \fIyy\fR?, \fIdd monthname \fR?\fIyy\fR?, \fIday, dd monthname
-yy\fR, \fI?CC?yymmdd\fR, \fI?CC?yy-mm-dd\fR, \fIdd-monthname-?CC?yy\fR.
+acceptable formats are
+.QW "\fBmm/dd\fR?\fB/yy\fR?" ,
+.QW "\fBmonthname dd\fR?\fB, yy\fR?" ,
+.QW "\fBday, dd monthname \fR?\fByy\fR?" ,
+.QW "\fBdd monthname yy\fR" ,
+.QW "?\fBCC\fR?\fByymmdd\fR" ,
+and
+.QW "\fBdd-monthname-\fR?\fBCC\fR?\fByy\fR" .
 The default year is the current year.  If the year is less
-.VS
 than 100, we treat the years 00-68 as 2000-2068 and the years 69-99
 as 1969-1999.  Not all platforms can represent the years 38-70, so
 an error may result if these years are used.
-.VE
 .TP
 \fIISO 8601 point-in-time\fR
-An ISO 8601 point-in-time specification, such as \fICCyymmddThhmmss\fR, where
-T is the literal T, \fICCyymmdd hhmmss\fR, or 
-\fICCyymmddThh:mm:ss\fR.  Note that only these three formats are accepted.
+An ISO 8601 point-in-time specification, such as
+.QW \fICCyymmdd\fBT\fIhhmmss\fR,
+where \fBT\fR is the literal
+.QW T ,
+.QW "\fICCyymmdd hhmmss\fR" ,
+or
+.QW \fICCyymmdd\fBT\fIhh:mm:ss\fR .
+Note that only these three formats are accepted.
 The command does \fInot\fR accept the full range of point-in-time
 specifications specified in ISO8601.  Other formats can be recognized by
-using commands such as \fBregexp\fR to extract their fields and reorganize
-them into a form accepted by the \fBclock scan\fR command.
+giving an explicit \fI\-format\fR option to the \fBclock scan\fR command.
 .TP
 \fIrelative time\fR
-A specification relative to the current time.  The format is \fInumber
-unit\fR acceptable units are \fByear\fR, \fBfortnight\fR, \fBmonth\fR, \fBweek\fR, \fBday\fR,
+A specification relative to the current time.  The format is \fBnumber
+unit\fR. Acceptable units are \fByear\fR, \fBfortnight\fR, 
+\fBmonth\fR, \fBweek\fR, \fBday\fR,
 \fBhour\fR, \fBminute\fR (or \fBmin\fR), and \fBsecond\fR (or \fBsec\fR).  The
 unit can be specified as a singular or plural, as in \fB3 weeks\fR.
 These modifiers may also be specified:
 \fBtomorrow\fR, \fByesterday\fR, \fBtoday\fR, \fBnow\fR,
 \fBlast\fR, \fBthis\fR, \fBnext\fR, \fBago\fR.
-.RE
-.sp
-.RS
+.PP
 The actual date is calculated according to the following steps.
+.PP
 First, any absolute date and/or time is processed and converted.
 Using that time as the base, day-of-week specifications are added.
 Next, relative specifications are used.  If a date or day is
@@ -262,29 +893,9 @@ used.  Finally, a correction is applied so that the correct hour of
 the day is produced after allowing for daylight savings time
 differences and the correct date is given when going from the end
 of a long month to a short month.
-.sp
-Daylight savings time correction is applied only when the relative time
-is specified in units of days or more, ie, days, weeks, fortnights, months or
-years.  This means that when crossing the daylight savings time boundary,
-different results will be given for \fBclock scan "1 day"\fR and
-\fBclock scan "24 hours"\fR:
-.CS
-.ta 6c
-% \fBclock scan\fR "1 day" -base [\fBclock scan\fR 1999-10-31]
-941443200
-% \fBclock scan\fR "24 hours" -base [\fBclock scan\fR 1999-10-31]
-941439600
-.CE
-.RE
-.TP
-\fBclock seconds\fR
-Return the current date and time as a system-dependent integer value.  The
-unit of the value is seconds, allowing it to be used for relative time
-calculations.  The value is usually defined as total elapsed time from
-an ``epoch''.  You shouldn't assume the value of the epoch.
-
 .SH "SEE ALSO"
-date(1), time(n)
-
+msgcat(n)
 .SH KEYWORDS
 clock, date, time
+.SH "COPYRIGHT"
+Copyright (c) 2004 Kevin B. Kenny <kennykb@acm.org>. All rights reserved.
diff --git a/doc/close.n b/doc/close.n
index a1c5f01..4ef3c7d 100644
--- a/doc/close.n
+++ b/doc/close.n
@@ -10,7 +10,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-close \- Close an open channel.
+close \- Close an open channel
 .SH SYNOPSIS
 \fBclose \fIchannelId\fR
 .BE
@@ -19,17 +19,14 @@ close \- Close an open channel.
 .PP
 Closes the channel given by \fIchannelId\fR.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as a
 Tcl standard channel (\fBstdin\fR, \fBstdout\fR, or \fBstderr\fR),
 the return value from an invocation of \fBopen\fR or \fBsocket\fR, or
 the result of a channel creation command provided by a Tcl extension.
-.VE
 .PP
 All buffered output is flushed to the channel's output device,
 any buffered input is discarded, the underlying file or device is closed,
 and \fIchannelId\fR becomes unavailable for use.
-.VS "" br
 .PP
 If the channel is blocking, the command does not return until all output
 is flushed.
@@ -37,11 +34,9 @@ If the channel is nonblocking and there is unflushed output, the
 channel remains open and the command
 returns immediately; output will be flushed in the background and the
 channel will be closed when all the flushing is complete.
-.VE
 .PP
 If \fIchannelId\fR is a blocking channel for a command pipeline then
 \fBclose\fR waits for the child processes to complete.
-.VS "" br
 .PP
 If the channel is shared between interpreters, then \fBclose\fR
 makes \fIchannelId\fR unavailable in the invoking interpreter but has no
@@ -54,7 +49,6 @@ When the last interpreter in which the channel is registered invokes
 Channels are automatically closed when an interpreter is destroyed and
 when the process exits.  Channels are switched to blocking mode, to ensure
 that all output is correctly flushed before the process exits.
-.VE
 .PP
 The command returns an empty string, and may generate an error if
 an error occurs while flushing output.  If a command in a command
diff --git a/doc/concat.n b/doc/concat.n
index e52d978..f7317c4 100644
--- a/doc/concat.n
+++ b/doc/concat.n
@@ -24,27 +24,33 @@ into a single list.
 It permits any number of arguments;
 if no \fIarg\fRs are supplied, the result is an empty string.
 .SH EXAMPLES
-Although \fBconcat\fR will concatenate lists (so the command:
+Although \fBconcat\fR will concatenate lists, flattening them in the process
+(so giving the following interactive session):
+.PP
 .CS
-\fBconcat\fR a b {c d e} {f {g h}}
+\fI%\fR \fBconcat\fR a b {c d e} {f {g h}}
+\fIa b c d e f {g h}\fR
 .CE
-will return "\fBa b c d e f {g h}\fR" as its result), it will also
-concatenate things that are not lists, and hence the command:
+.PP
+it will also concatenate things that are not lists, as can be seen from this
+session:
+.PP
 .CS
-\fBconcat\fR " a b {c   " d "  e} f"
+\fI%\fR \fBconcat\fR " a b {c   " d "  e} f"
+\fIa b {c d e} f\fR
 .CE
-will return "\fBa b {c d e} f\fR" as its result.
 .PP
-Note that the concatenation does not remove spaces from the middle of
-its arguments, so the command:
+Note also that the concatenation does not remove spaces from the middle of
+values, as can be seen here:
+.PP
 .CS
-\fBconcat\fR "a   b   c" { d e f }
+\fI%\fR \fBconcat\fR "a   b   c" { d e f }
+\fIa   b   c d e f\fR
 .CE
-will return "\fBa   b   c d e f\fR" (i.e. with three spaces between
-the \fBa\fR, the \fBb\fR and the \fBc\fR).
-
+.PP
+(i.e., there are three spaces between each of the \fBa\fR, the \fBb\fR and the
+\fBc\fR).
 .SH "SEE ALSO"
-append(n), eval(n)
-
+append(n), eval(n), join(n)
 .SH KEYWORDS
 concatenate, join, lists
diff --git a/doc/dde.n b/doc/dde.n
index 5dbbee5..2e3c883 100644
--- a/doc/dde.n
+++ b/doc/dde.n
@@ -6,26 +6,26 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH dde n 1.2 dde "Tcl Bundled Packages"
+.TH dde n 1.3 dde "Tcl Bundled Packages"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 dde \- Execute a Dynamic Data Exchange command
 .SH SYNOPSIS
 .sp
-\fBpackage require dde 1.2\fR
+\fBpackage require dde 1.3\fR
 .sp
-\fBdde eval\fR ?\fB\-async\fR? \fIservice cmd\fR ?\fIarg ...\fR?
+\fBdde servername\fR ?\fB\-force\fR? ?\fB\-handler \fIproc\fR? ?\fB\-\|\-\fR? ?\fItopic\fR?
 .sp
 \fBdde execute\fR ?\fB\-async\fR? \fIservice topic data\fR
 .sp
-\fBdde poke \fIservice topic item data\fR
-.sp
-\fBdde request\fR ?\fB\-binary\fR? \fIservice topic data\fR
+\fBdde poke\fR \fIservice topic item data\fR
 .sp
-\fBdde servername\fR ?\fItopic\fR?
+\fBdde request\fR ?\fB\-binary\fR? \fIservice topic item\fR
 .sp
 \fBdde services \fIservice topic\fR
+.sp
+\fBdde eval\fR ?\fB\-async\fR? \fItopic cmd \fR?\fIarg arg ...\fR?
 .BE
 
 .SH DESCRIPTION
@@ -37,23 +37,40 @@ transaction needs a \fIservice name\fR and a \fItopic\fR. Both the
 \fIservice name\fR and \fItopic\fR are application defined; Tcl uses
 the service name \fBTclEval\fR, while the topic name is the name of the
 interpreter given by \fBdde servername\fR. Other applications have their
-own \fIservice name\fRs and \fItopic\fRs. For instance, Microsoft Excel
+own \fIservice names\fR and \fItopics\fR. For instance, Microsoft Excel
 has the service name \fBExcel\fR.
 .PP
-The \fBeval\fR and \fBexecute\fR commands accept the option \fB\-async\fR:
-
 .SH "DDE COMMANDS"
 .PP
 The following commands are a subset of the full Dynamic Data Exchange
 set of commands.
 .TP
-\fBdde servername \fR?\fItopic\fR?
+\fBdde servername \fR?\fB\-force\fR? ?\fB\-handler \fIproc\fR? ?\fB\-\|\-\fR? ?\fItopic\fR?
+.
 \fBdde servername\fR registers the interpreter as a DDE server with
 the service name \fBTclEval\fR and the topic name specified by \fItopic\fR.
 If no \fItopic\fR is given, \fBdde servername\fR returns the name
-of the current topic or the empty string if it is not registered as a service.
+of the current topic or the empty string if it is not registered as a
+service. If the given \fItopic\fR name is already in use, then a
+suffix of the form
+.QW " #2"
+or
+.QW " #3"
+is appended to the name to make it
+unique. The command's result will be the name actually used. The
+\fB\-force\fR option is used to force registration of precisely the
+given \fItopic\fR name.
+.RS
+.PP
+The \fB\-handler\fR option specifies a Tcl procedure that will be called to
+process calls to the dde server. If the package has been loaded into a
+safe interpreter then a \fB\-handler\fR procedure must be defined. The
+procedure is called with all the arguments provided by the remote
+call.
+.RE
 .TP
 \fBdde execute\fR ?\fB\-async\fR? \fIservice topic data\fR
+.
 \fBdde execute\fR takes the \fIdata\fR and sends it to the server indicated
 by \fIservice\fR with the topic indicated by \fItopic\fR. Typically,
 \fIservice\fR is the name of an application, and \fItopic\fR is a file to
@@ -65,6 +82,7 @@ script did not run, unless the \fB\-async\fR flag was used, in which case
 the command returns immediately with no error.
 .TP
 \fBdde poke \fIservice topic item data\fR
+.
 \fBdde poke\fR passes the \fIdata\fR to the server indicated by
 \fIservice\fR using the \fItopic\fR and \fIitem\fR specified.  Typically,
 \fIservice\fR is the name of an application.  \fItopic\fR is application
@@ -74,6 +92,7 @@ it must always be non-null.  The \fIdata\fR field is given to the remote
 application.
 .TP
 \fBdde request\fR ?\fB\-binary\fR? \fIservice topic item\fR
+.
 \fBdde request\fR is typically used to get the value of something; the
 value of a cell in Microsoft Excel or the text of a selection in
 Microsoft Word. \fIservice\fR is typically the name of an application,
@@ -84,24 +103,25 @@ string with terminating null.  If \fB\-binary\fR is specified, the
 result is returned as a byte array.
 .TP
 \fBdde services \fIservice topic\fR
+.
 \fBdde services\fR returns a list of service-topic pairs that
 currently exist on the machine. If \fIservice\fR and \fItopic\fR are
-both null strings ({}), then all service-topic pairs currently
-available on the system are returned. If \fIservice\fR is null and
+both empty strings ({}), then all service-topic pairs currently
+available on the system are returned. If \fIservice\fR is empty and
 \fItopic\fR is not, then all services with the specified topic are
-returned. If \fIservice\fR is not null and \fItopic\fR is, all topics
-for a given service are returned. If both are not null, if that
-service-topic pair currently exists, it is returned; otherwise, null
-is returned.
+returned. If \fIservice\fR is non-empty and \fItopic\fR is, all topics
+for a given service are returned. If both are non-empty, if that
+service-topic pair currently exists, it is returned; otherwise, an
+empty string is returned.
 .TP
 \fBdde eval\fR ?\fB\-async\fR? \fItopic cmd \fR?\fIarg arg ...\fR?
+.
 \fBdde eval\fR evaluates a command and its arguments using the interpreter
 specified by \fItopic\fR. The DDE service must be the \fBTclEval\fR
 service.  The \fB\-async\fR option requests asynchronous invocation.  The
 command returns an error message if the script did not run, unless the
 \fB\-async\fR flag was used, in which case the command returns immediately
-with no error.  This command can be used to replace \fBsend\fR on Windows.
-
+with no error.  This command can be used to replace send on Windows.
 .SH "DDE AND TCL"
 A Tcl interpreter always has a service name of \fBTclEval\fR.  Each
 different interpreter of all running Tcl applications must be
@@ -134,7 +154,6 @@ without adding the \fB&\fR to place the process in the background).
 If for any reason the event queue is not flushed, DDE commands may
 hang until the event queue is flushed.  This can create a deadlock
 situation.
-
 .SH EXAMPLE
 This asks Internet Explorer (which must already be running) to go to a
 particularly important website:
@@ -142,9 +161,7 @@ particularly important website:
 package require dde
 \fBdde execute\fR -async iexplore WWW_OpenURL http://www.tcl.tk/
 .CE
-
 .SH "SEE ALSO"
 tk(n), winfo(n), send(n)
-
 .SH KEYWORDS
 application, dde, name, remote execution
diff --git a/doc/dict.n b/doc/dict.n
new file mode 100644
index 0000000..28c4f7c
--- /dev/null
+++ b/doc/dict.n
@@ -0,0 +1,389 @@
+'\"
+'\" Copyright (c) 2003 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.so man.macros
+.TH dict n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+dict \- Manipulate dictionaries
+.SH SYNOPSIS
+\fBdict \fIoption arg \fR?\fIarg ...\fR?
+.BE
+.SH DESCRIPTION
+.PP
+Performs one of several operations on dictionary values or variables
+containing dictionary values (see the \fBDICTIONARY VALUES\fR section
+below for a description), depending on \fIoption\fR.  The legal
+\fIoption\fRs (which may be abbreviated) are:
+.TP
+\fBdict append \fIdictionaryVariable key \fR?\fIstring ...\fR?
+This appends the given string (or strings) to the value that the given
+key maps to in the dictionary value contained in the given variable,
+writing the resulting dictionary value back to that variable.
+Non-existent keys are treated as if they map to an empty string.
+.TP
+\fBdict create \fR?\fIkey value ...\fR?
+Create a new dictionary that contains each of the key/value mappings
+listed as arguments (keys and values alternating, with each key being
+followed by its associated value.)
+.TP
+\fBdict exists \fIdictionaryValue key \fR?\fIkey ...\fR?
+This returns a boolean value indicating whether the given key (or path
+of keys through a set of nested dictionaries) exists in the given
+dictionary value. This returns a true value exactly when \fBdict
+get\fR on that path will succeed.
+.TP
+\fBdict filter \fIdictionaryValue filterType arg \fR?\fIarg ...\fR?
+This takes a dictionary value and returns a new dictionary that
+contains just those key/value pairs that match the specified filter
+type (which may be abbreviated.)  Supported filter types are:
+.RS
+.TP
+\fBdict filter \fIdictionaryValue \fBkey \fIglobPattern\fR
+The key rule only matches those key/value pairs whose keys match the
+given pattern (in the style of \fBstring match\fR.)
+.TP
+\fBdict filter \fIdictionaryValue \fBscript {\fIkeyVar valueVar\fB} \fIscript\fR
+The script rule tests for matching by assigning the key to the
+\fIkeyVar\fR and the value to the \fIvalueVar\fR, and then evaluating
+the given script which should return a boolean value (with the
+key/value pair only being included in the result of the \fBdict
+filter\fR when a true value is returned.)  Note that the first
+argument after the rule selection word is a two-element list.  If the
+\fIscript\fR returns with a condition of \fBTCL_BREAK\fR, no further
+key/value pairs are considered for inclusion in the resulting
+dictionary, and a condition of \fBTCL_CONTINUE\fR is equivalent to a false
+result. The key/value pairs are tested in the order in which the keys
+were inserted into the dictionary.
+.TP
+\fBdict filter \fIdictionaryValue \fBvalue \fIglobPattern\fR
+The value rule only matches those key/value pairs whose values match
+the given pattern (in the style of \fBstring match\fR.)
+.RE
+.TP
+\fBdict for {\fIkeyVar valueVar\fB} \fIdictionaryValue body\fR
+This command takes three arguments, the first a two-element list of
+variable names (for the key and value respectively of each mapping in
+the dictionary), the second the dictionary value to iterate across,
+and the third a script to be evaluated for each mapping with the key
+and value variables set appropriately (in the manner of \fBforeach\fR.)
+The result of the command is an empty string. If any evaluation of the
+body generates a \fBTCL_BREAK\fR result, no further pairs from the
+dictionary will be iterated over and the \fBdict for\fR command will
+terminate successfully immediately. If any evaluation of the body
+generates a \fBTCL_CONTINUE\fR result, this shall be treated exactly like a
+normal \fBTCL_OK\fR result. The order of iteration is the order in
+which the keys were inserted into the dictionary.
+.TP
+\fBdict get \fIdictionaryValue \fR?\fIkey ...\fR?
+Given a dictionary value (first argument) and a key (second argument),
+this will retrieve the value for that key. Where several keys are
+supplied, the behaviour of the command shall be as if the result of
+\fBdict get $dictVal $key\fR was passed as the first argument to
+\fBdict get\fR with the remaining arguments as second (and possibly
+subsequent) arguments. This facilitates lookups in nested
+dictionaries. For example, the following two commands are equivalent:
+.RS
+.PP
+.CS
+dict get $dict foo bar spong
+dict get [dict get [dict get $dict foo] bar] spong
+.CE
+.PP
+If no keys are provided, \fBdict get\fR will return a list containing pairs of
+elements in a manner similar to \fBarray get\fR. That is, the first
+element of each pair would be the key and the second element would be
+the value for that key.
+.PP
+It is an error to attempt to retrieve a value for a key that is not
+present in the dictionary.
+.RE
+.TP
+\fBdict incr \fIdictionaryVariable key \fR?\fIincrement\fR?
+This adds the given increment value (an integer that defaults to 1 if
+not specified) to the value that the given key maps to in the
+dictionary value contained in the given variable, writing the
+resulting dictionary value back to that variable. Non-existent keys
+are treated as if they map to 0. It is an error to increment a value
+for an existing key if that value is not an integer.
+.TP
+\fBdict info \fIdictionaryValue\fR
+This returns information (intended for display to people) about the
+given dictionary though the format of this data is dependent on the
+implementation of the dictionary. For dictionaries that are
+implemented by hash tables, it is expected that this will return the
+string produced by \fBTcl_HashStats\fR, similar to \fBarray statistics\fR.
+.TP
+\fBdict keys \fIdictionaryValue \fR?\fIglobPattern\fR?
+Return a list of all keys in the given dictionary value. If a pattern
+is supplied, only those keys that match it (according to the rules of
+\fBstring match\fR) will be returned. The returned keys will be in the
+order that they were inserted into the dictionary.
+.TP
+\fBdict lappend \fIdictionaryVariable key \fR?\fIvalue ...\fR?
+This appends the given items to the list value that the given key maps
+to in the dictionary value contained in the given variable, writing
+the resulting dictionary value back to that variable. Non-existent
+keys are treated as if they map to an empty list, and it is legal for
+there to be no items to append to the list. It is an error for the
+value that the key maps to to not be representable as a list.
+.TP
+\fBdict merge \fR?\fIdictionaryValue ...\fR?
+Return a dictionary that contains the contents of each of the
+\fIdictionaryValue\fR arguments.  Where two (or more) dictionaries
+contain a mapping for the same key, the resulting dictionary maps that
+key to the value according to the last dictionary on the command line
+containing a mapping for that key.
+.TP
+\fBdict remove \fIdictionaryValue \fR?\fIkey ...\fR?
+Return a new dictionary that is a copy of an old one passed in as
+first argument except without mappings for each of the keys listed.
+It is legal for there to be no keys to remove, and it also legal for
+any of the keys to be removed to not be present in the input
+dictionary in the first place.
+.TP
+\fBdict replace \fIdictionaryValue \fR?\fIkey value ...\fR?
+Return a new dictionary that is a copy of an old one passed in as
+first argument except with some values different or some extra
+key/value pairs added. It is legal for this command to be called with
+no key/value pairs, but illegal for this command to be called with a
+key but no value.
+.TP
+\fBdict set \fIdictionaryVariable key \fR?\fIkey ...\fR? \fIvalue\fR
+This operation takes the name of a variable containing a dictionary
+value and places an updated dictionary value in that variable
+containing a mapping from the given key to the given value. When
+multiple keys are present, this operation creates or updates a chain
+of nested dictionaries.
+.TP
+\fBdict size \fIdictionaryValue\fR
+Return the number of key/value mappings in the given dictionary value.
+.TP
+\fBdict unset \fIdictionaryVariable key \fR?\fIkey ...\fR?
+This operation (the companion to \fBdict set\fR) takes the name of a
+variable containing a dictionary value and places an updated
+dictionary value in that variable that does not contain a mapping for
+the given key. Where multiple keys are present, this describes a path
+through nested dictionaries to the mapping to remove. At least one key
+must be specified, but the last key on the key-path need not exist.
+All other components on the path must exist.
+.TP
+\fBdict update \fIdictionaryVariable key varName \fR?\fIkey varName ...\fR? \fIbody\fR
+Execute the Tcl script in \fIbody\fR with the value for each \fIkey\fR
+(as found by reading the dictionary value in \fIdictionaryVariable\fR)
+mapped to the variable \fIvarName\fR. There may be multiple
+\fIkey\fR/\fIvarName\fR pairs. If a \fIkey\fR does not have a mapping,
+that corresponds to an unset \fIvarName\fR. When \fIbody\fR
+terminates, any changes made to the \fIvarName\fRs is reflected back
+to the dictionary within \fIdictionaryVariable\fR (unless
+\fIdictionaryVariable\fR itself becomes unreadable, when all updates
+are silently discarded), even if the result of \fIbody\fR is an error
+or some other kind of exceptional exit. The result of \fBdict
+update\fR is (unless some kind of error occurs) the result of the
+evaluation of \fIbody\fR.
+.RS
+.PP
+Each \fIvarName\fR is mapped in the scope enclosing the \fBdict update\fR;
+it is recommended that this command only be used in a local scope
+(\fBproc\fRedure or lambda term for \fBapply\fR). Because of
+this, the variables set by \fBdict update\fR will continue to
+exist after the command finishes (unless explicitly \fBunset\fR).
+Note that the mapping of values to variables
+does not use traces; changes to the \fIdictionaryVariable\fR's
+contents only happen when \fIbody\fR terminates.
+.RE
+.TP
+\fBdict values \fIdictionaryValue \fR?\fIglobPattern\fR?
+Return a list of all values in the given dictionary value. If a
+pattern is supplied, only those values that match it (according to the
+rules of \fBstring match\fR) will be returned. The returned values
+will be in the order of that the keys associated with those values
+were inserted into the dictionary.
+.TP
+\fBdict with \fIdictionaryVariable \fR?\fIkey ...\fR? \fIbody\fR
+Execute the Tcl script in \fIbody\fR with the value for each key in
+\fIdictionaryVariable\fR mapped (in a manner similarly to \fBdict
+update\fR) to a variable with the same name. Where one or more
+\fIkey\fRs are available, these indicate a chain of nested
+dictionaries, with the innermost dictionary being the one opened out
+for the execution of \fIbody\fR. As with \fBdict update\fR, making
+\fIdictionaryVariable\fR unreadable will make the updates to the
+dictionary be discarded, and this also happens if the contents of
+\fIdictionaryVariable\fR are adjusted so that the chain of
+dictionaries no longer exists. The result of \fBdict with\fR is
+(unless some kind of error occurs) the result of the evaluation of
+\fIbody\fR.
+.RS
+.PP
+The variables are mapped in the scope enclosing the \fBdict with\fR;
+it is recommended that this command only be used in a local scope
+(\fBproc\fRedure or lambda term for \fBapply\fR). Because of
+this, the variables set by \fBdict with\fR will continue to
+exist after the command finishes (unless explicitly \fBunset\fR).
+Note that the mapping of values to variables does not use
+traces; changes to the \fIdictionaryVariable\fR's contents only happen
+when \fIbody\fR terminates.
+.PP
+If the \fIdictionaryVariable\fR contains a value that is not a dictionary at
+the point when the \fIbody\fR terminates (which can easily happen if the name
+is the same as any of the keys in dictionary) then an error occurs at that
+point. This command is thus not recommended for use when the keys in the
+dictionary are expected to clash with the \fIdictionaryVariable\fR name
+itself. Where the contained key does map to a dictionary, the net effect is to
+combine that inner dictionary into the outer dictionary; see the
+\fBEXAMPLES\fR below for an illustration of this.
+.RE
+.SH "DICTIONARY VALUES"
+.PP
+Dictionaries are values that contain an efficient, order-preserving
+mapping from arbitrary keys to arbitrary values.
+Each key in the dictionary maps to a single value.
+They have a textual format that is exactly that of any list with an
+even number of elements, with each mapping in the dictionary being
+represented as two items in the list. When a command takes a
+dictionary and produces a new dictionary based on it (either returning
+it or writing it back into the variable that the starting dictionary
+was read from) the new dictionary will have the same order of keys,
+modulo any deleted keys and with new keys added on to the end.
+When a string is interpreted as a dictionary and it would otherwise
+have duplicate keys, only the last value for a particular key is used;
+the others are ignored, meaning that,
+.QW "apple banana"
+and
+.QW "apple carrot apple banana"
+are equivalent dictionaries (with different string representations).
+.PP
+Operations that derive a new dictionary from an old one (e.g., updates
+like \fBdict set\fR and \fBdict unset\fR) preserve the order of keys
+in the dictionary. The exceptions to this are for any new keys they
+add, which are appended to the sequence, and any keys that are
+removed, which are excised from the order.
+.SH EXAMPLES
+.PP
+Basic dictionary usage:
+.PP
+.CS
+# Make a dictionary to map extensions to descriptions
+set filetypes [\fBdict create\fR .txt "Text File" .tcl "Tcl File"]
+
+# Add/update the dictionary
+\fBdict set\fR filetypes .tcl "Tcl Script"
+\fBdict set\fR filetypes .tm  "Tcl Module"
+\fBdict set\fR filetypes .gif "GIF Image"
+\fBdict set\fR filetypes .png "PNG Image"
+
+# Simple read from the dictionary
+set ext ".tcl"
+set desc [\fBdict get\fR $filetypes $ext]
+puts "$ext is for a $desc"
+
+# Somewhat more complex, with existence test
+foreach filename [glob *] {
+    set ext [file extension $filename]
+    if {[\fBdict exists\fR $filetypes $ext]} {
+        puts "$filename is a [\fBdict get\fR $filetypes $ext]"
+    }
+}
+.CE
+.PP
+Constructing and using nested dictionaries:
+.PP
+.CS
+# Data for one employee
+\fBdict set\fR employeeInfo 12345-A forenames "Joe"
+\fBdict set\fR employeeInfo 12345-A surname   "Schmoe"
+\fBdict set\fR employeeInfo 12345-A street "147 Short Street"
+\fBdict set\fR employeeInfo 12345-A city   "Springfield"
+\fBdict set\fR employeeInfo 12345-A phone  "555-1234"
+# Data for another employee
+\fBdict set\fR employeeInfo 98372-J forenames "Anne"
+\fBdict set\fR employeeInfo 98372-J surname   "Other"
+\fBdict set\fR employeeInfo 98372-J street "32995 Oakdale Way"
+\fBdict set\fR employeeInfo 98372-J city   "Springfield"
+\fBdict set\fR employeeInfo 98372-J phone  "555-8765"
+# The above data probably ought to come from a database...
+
+# Print out some employee info
+set i 0
+puts "There are [\fBdict size\fR $employeeInfo] employees"
+\fBdict for\fR {id info} $employeeInfo {
+   puts "Employee #[incr i]: $id"
+   \fBdict with\fR info {
+      puts "   Name: $forenames $surname"
+      puts "   Address: $street, $city"
+      puts "   Telephone: $phone"
+   }
+}
+# Another way to iterate and pick out names...
+foreach id [\fBdict keys\fR $employeeInfo] {
+   puts "Hello, [\fBdict get\fR $employeeInfo $id forenames]!"
+}
+.CE
+.PP
+A localizable version of \fBstring toupper\fR:
+.PP
+.CS
+# Set up the basic C locale
+set capital [\fBdict create\fR C [\fBdict create\fR]]
+foreach c [split {abcdefghijklmnopqrstuvwxyz} ""] {
+   \fBdict set\fR capital C $c [string toupper $c]
+}
+
+# English locales can luckily share the "C" locale
+\fBdict set\fR capital en [\fBdict get\fR $capital C]
+\fBdict set\fR capital en_US [\fBdict get\fR $capital C]
+\fBdict set\fR capital en_GB [\fBdict get\fR $capital C]
+
+# ... and so on for other supported languages ...
+
+# Now get the mapping for the current locale and use it.
+set upperCaseMap [\fBdict get\fR $capital $env(LANG)]
+set upperCase [string map $upperCaseMap $string]
+.CE
+.PP
+Showing the detail of \fBdict with\fR:
+.PP
+.CS
+proc sumDictionary {varName} {
+   upvar 1 $varName vbl
+   foreach key [\fBdict keys\fR $vbl] {
+      # Manufacture an entry in the subdictionary
+      \fBdict set\fR vbl $key total 0
+      # Add the values and remove the old
+      \fBdict with\fR vbl $key {
+         set total [expr {$x + $y + $z}]
+         unset x y z
+      }
+   }
+   puts "last total was $total, for key $key"
+}
+
+set myDict {
+   a {x 1 y 2 z 3}
+   b {x 6 y 5 z 4}
+}
+
+sumDictionary myDict
+#    prints: \fIlast total was 15, for key b\fR
+
+puts "dictionary is now \\"$myDict\\""
+#    prints: \fIdictionary is now "a {total 6} b {total 15}"\fR
+.CE
+.PP
+When \fBdict with\fR is used with a key that clashes with the name of the
+dictionary variable:
+.PP
+.CS
+set foo {foo {a b} bar 2 baz 3}
+\fBdict with\fR foo {}
+puts $foo
+#    prints: \fIa b foo {a b} bar 2 baz 3\fR
+.CE
+.SH "SEE ALSO"
+append(n), array(n), foreach(n), incr(n), list(n), lappend(n), set(n)
+.SH KEYWORDS
+dictionary, create, update, lookup, iterate, filter
diff --git a/doc/encoding.n b/doc/encoding.n
index 5950246..f8f3d54 100644
--- a/doc/encoding.n
+++ b/doc/encoding.n
@@ -39,6 +39,19 @@ string.  Each byte is stored in the lower 8-bits of a Unicode
 character.  If \fIencoding\fR is not specified, the current
 system encoding is used.
 .TP
+\fBencoding dirs\fR ?\fIdirectoryList\fR?
+.VS 8.5
+Tcl can load encoding data files from the file system that describe
+additional encodings for it to work with. This command sets the search
+path for \fB*.enc\fR encoding data files to the list of directories
+\fIdirectoryList\fR. If \fIdirectoryList\fR is omitted then the
+command returns the current list of directories that make up the
+search path. It is an error for \fIdirectoryList\fR to not be a valid
+list. If, when a search for an encoding data file is happening, an
+element in \fIdirectoryList\fR does not refer to a readable,
+searchable directory, that element is ignored.
+.VE 8.5
+.TP
 \fBencoding names\fR
 Returns a list containing the names of all of the encodings that are
 currently available. 
@@ -67,10 +80,11 @@ of the original string.  The \fBencoding\fR command can be used to
 convert this string to the expected Japanese Unicode characters.  For
 example,
 .CS
-set s [\fBencoding convertfrom\fR euc-jp "\\xA4\\xCF"]
+set s [\fBencoding convertfrom\fR euc-jp "\exA4\exCF"]
 .CE
-would return the Unicode string "\\u306F", which is the Hiragana
-letter HA.
+would return the Unicode string
+.QW "\eu306F" ,
+which is the Hiragana letter HA.
 
 .SH "SEE ALSO"
 Tcl_GetEncoding(3)
diff --git a/doc/error.n b/doc/error.n
index 8c47ba3..77391e5 100644
--- a/doc/error.n
+++ b/doc/error.n
@@ -21,36 +21,42 @@ Returns a \fBTCL_ERROR\fR code, which causes command interpretation to be
 unwound.  \fIMessage\fR is a string that is returned to the application
 to indicate what went wrong.
 .PP
-If the \fIinfo\fR argument is provided and is non-empty,
-it is used to initialize the global variable \fBerrorInfo\fR.
-\fBerrorInfo\fR is used to accumulate a stack trace of what
-was in progress when an error occurred; as nested commands unwind,
-the Tcl interpreter adds information to \fBerrorInfo\fR.  If the
-\fIinfo\fR argument is present, it is used to initialize
-\fBerrorInfo\fR and the first increment of unwind information
-will not be added by the Tcl interpreter.  In other
+The \fB\-errorinfo\fR return option of an interpreter is used
+to accumulate a stack trace of what was in progress when an
+error occurred; as nested commands unwind,
+the Tcl interpreter adds information to the \fB\-errorinfo\fR
+return option.  If the \fIinfo\fR argument is present, it is
+used to initialize the \fB\-errorinfo\fR return options and
+the first increment of unwind information
+will not be added by the Tcl interpreter.  
+In other
 words, the command containing the \fBerror\fR command will not appear
-in \fBerrorInfo\fR; in its place will be \fIinfo\fR.
-This feature is most useful in conjunction with the \fBcatch\fR command:
+in the stack trace; in its place will be \fIinfo\fR.
+Historically, this feature had been most useful in conjunction
+with the \fBcatch\fR command:
 if a caught error cannot be handled successfully, \fIinfo\fR can be used
 to return a stack trace reflecting the original point of occurrence
 of the error:
 .CS
 \fBcatch {...} errMsg
-set savedInfo $errorInfo
+set savedInfo $::errorInfo
 \&...
 error $errMsg $savedInfo\fR
 .CE
+When working with Tcl 8.5 or later, the following code
+should be used instead:
+.CS
+\fBcatch {...} errMsg options
+\&...
+return -options $options $errMsg\fR
+.CE
 .PP
 If the \fIcode\fR argument is present, then its value is stored
-in the \fBerrorCode\fR global variable.  This variable is intended
-to hold a machine-readable description of the error in cases where
-such information is available; see the \fBtclvars\fR manual
-page for information on the proper format for the variable.
-If the \fIcode\fR argument is not
-present, then \fBerrorCode\fR is automatically reset to
-``NONE'' by the Tcl interpreter as part of processing the
-error generated by the command.
+in the \fB\-errorcode\fR return option.  The \fB\-errorcode\fR
+return option is intended to hold a machine-readable description
+of the error in cases where such information is available; see
+the \fBreturn\fR manual page for information on the proper format
+for this option's value.
 .SH EXAMPLE
 Generate an error if a basic mathematical operation fails:
 .CS
@@ -60,7 +66,7 @@ if {1+2 != 3} {
 .CE
 
 .SH "SEE ALSO"
-catch(n), return(n), tclvars(n)
+catch(n), return(n)
 
 .SH KEYWORDS
-error, errorCode, errorInfo
+error
diff --git a/doc/eval.n b/doc/eval.n
index 81b9b1f..a642d23 100644
--- a/doc/eval.n
+++ b/doc/eval.n
@@ -25,10 +25,39 @@ Tcl interpreter recursively, and returns the result of that
 evaluation (or any error generated by it).
 Note that the \fBlist\fR command quotes sequences of words in such a
 way that they are not further expanded by the \fBeval\fR command.
-.SH EXAMPLE
-This procedure acts in a way that is analogous to the \fBlappend\fR
-command, except it inserts the argument values at the start of the
-list in the variable:
+.SH EXAMPLES
+Often, it is useful to store a fragment of a script in a variable and
+execute it later on with extra values appended. This technique is used
+in a number of places throughout the Tcl core (e.g. in \fBfcopy\fR,
+\fBlsort\fR and \fBtrace\fR command callbacks). This example shows how
+to do this using core Tcl commands:
+.CS
+set script {
+    puts "logging now"
+    lappend $myCurrentLogVar
+}
+set myCurrentLogVar log1
+# Set up a switch of logging variable part way through!
+after 20000 set myCurrentLogVar log2
+
+for {set i 0} {$i<10} {incr i} {
+    # Introduce a random delay
+    after [expr {int(5000 * rand())}]
+    update    ;# Check for the asynch log switch
+    \fBeval\fR $script $i [clock clicks]
+}
+.CE
+.PP
+.VS 8.5
+Note that in the most common case (where the script fragment is
+actually just a list of words forming a command prefix), it is better
+to use \fB{*}$script\fR when doing this sort of invocation
+pattern.  It is less general than the \fBeval\fR command, and hence
+easier to make robust in practice.
+.VE 8.5
+The following procedure acts in a way that is analogous to the
+\fBlappend\fR command, except it inserts the argument values at the
+start of the list in the variable:
 .CS
 proc lprepend {varName args} {
    upvar 1 $varName var
@@ -38,9 +67,16 @@ proc lprepend {varName args} {
    set var [\fBeval\fR [list linsert $var 0] $args]
 }
 .CE
+.VS 8.5
+However, the last line would now normally be written without
+\fBeval\fR, like this:
+.CS
+set var [linsert $var 0 {*}$args]
+.CE
+.VE 8.5
+
+.SH "SEE ALSO"
+catch(n), concat(n), error(n), interp(n), list(n), namespace(n), subst(n), tclvars(n), uplevel(n)
 
 .SH KEYWORDS
 concatenate, evaluate, script
-
-.SH "SEE ALSO"
-catch(n), concat(n), error(n), list(n), subst(n), tclvars(n)
diff --git a/doc/exec.n b/doc/exec.n
index c5a2307..fd4e9cf 100644
--- a/doc/exec.n
+++ b/doc/exec.n
@@ -1,12 +1,13 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
+'\" Copyright (c) 2006 Donal K. Fellows.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH exec n 7.6 Tcl "Tcl Built-In Commands"
+.TH exec n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
@@ -28,6 +29,12 @@ they are treated as command-line switches and are not part
 of the pipeline specification.  The following switches are
 currently supported:
 .TP 13
+\fB\-ignorestderr\fR
+.VS 8.5
+Stops the \fBexec\fR command from treating the output of messages to the
+pipeline's standard error channel as an error case.
+.VE 8.5
+.TP 13
 \fB\-keepnewline\fR
 Retains a trailing newline in the pipeline's output.
 Normally a trailing newline will be deleted.
@@ -40,76 +47,84 @@ If an \fIarg\fR (or pair of \fIarg\fRs) has one of the forms
 described below then it is used by \fBexec\fR to control the
 flow of input and output among the subprocess(es).
 Such arguments will not be passed to the subprocess(es).  In forms
-such as ``< \fIfileName\fR'' \fIfileName\fR may either be in a
-separate argument from ``<'' or in the same argument with no
-intervening space (i.e. ``<\fIfileName\fR'').
+such as
+.QW "\fB<\fR \fIfileName\fR" ,
+\fIfileName\fR may either be in a separate argument from
+.QW \fB<\fR
+or in the same argument with no intervening space (i.e.
+.QW \fB<\fIfileName\fR ).
 .TP 15
-|
+\fB|\fR
 Separates distinct commands in the pipeline.  The standard output
 of the preceding command will be piped into the standard input
 of the next command.
 .TP 15
-|&
+\fB|&\fR
 Separates distinct commands in the pipeline.  Both standard output
 and standard error of the preceding command will be piped into
 the standard input of the next command.
 This form of redirection overrides forms such as 2> and >&.
 .TP 15
-<\0\fIfileName\fR
+\fB<\0\fIfileName\fR
 The file named by \fIfileName\fR is opened and used as the standard
 input for the first command in the pipeline.
 .TP 15
-<@\0\fIfileId\fR
+\fB<@\0\fIfileId\fR
 \fIFileId\fR must be the identifier for an open file, such as the return
 value from a previous call to \fBopen\fR.
 It is used as the standard input for the first command in the pipeline.
 \fIFileId\fR must have been opened for reading.
 .TP 15
-<<\0\fIvalue\fR
+\fB<<\0\fIvalue\fR
 \fIValue\fR is passed to the first command as its standard input.
 .TP 15
->\0\fIfileName\fR
+\fB>\0\fIfileName\fR
 Standard output from the last command is redirected to the file named
 \fIfileName\fR, overwriting its previous contents.
 .TP 15
-2>\0\fIfileName\fR
+\fB2>\0\fIfileName\fR
 Standard error from all commands in the pipeline is redirected to the
 file named \fIfileName\fR, overwriting its previous contents.
 .TP 15
->&\0\fIfileName\fR
+\fB>&\0\fIfileName\fR
 Both standard output from the last command and standard error from all
 commands are redirected to the file named \fIfileName\fR, overwriting
 its previous contents.
 .TP 15
->>\0\fIfileName\fR
+\fB>>\0\fIfileName\fR
 Standard output from the last command is
 redirected to the file named \fIfileName\fR, appending to it rather
 than overwriting it.
 .TP 15
-2>>\0\fIfileName\fR
+\fB2>>\0\fIfileName\fR
 Standard error from all commands in the pipeline is
 redirected to the file named \fIfileName\fR, appending to it rather
 than overwriting it.
 .TP 15
->>&\0\fIfileName\fR
+\fB>>&\0\fIfileName\fR
 Both standard output from the last command and standard error from
 all commands are redirected to the file named \fIfileName\fR,
 appending to it rather than overwriting it.
 .TP 15
->@\0\fIfileId\fR
+\fB>@\0\fIfileId\fR
 \fIFileId\fR must be the identifier for an open file, such as the return
 value from a previous call to \fBopen\fR.
 Standard output from the last command is redirected to \fIfileId\fR's
 file, which must have been opened for writing.
 .TP 15
-2>@\0\fIfileId\fR
+\fB2>@\0\fIfileId\fR
 \fIFileId\fR must be the identifier for an open file, such as the return
 value from a previous call to \fBopen\fR.
 Standard error from all commands in the pipeline is
 redirected to \fIfileId\fR's file.
 The file must have been opened for writing.
 .TP 15
->&@\0\fIfileId\fR
+\fB2>@1\0\fR
+Standard error from all commands in the pipeline is redirected to the
+command result.  This operator is only valid at the end of the command
+pipeline.
+.TP 15
+\fB>&@\0\fIfileId\fR
 \fIFileId\fR must be the identifier for an open file, such as the return
 value from a previous call to \fBopen\fR.
 Both standard output from the last command and standard error from
@@ -118,15 +133,23 @@ The file must have been opened for writing.
 .PP
 If standard output has not been redirected then the \fBexec\fR
 command returns the standard output from the last command
-in the pipeline.
+in the pipeline,
+.VS 8.5
+unless
+.QW 2>@1
+was specified, in which case standard error is included as well.
+.VE 8.5
 If any of the commands in the pipeline exit abnormally or
 are killed or suspended, then \fBexec\fR will return an error
 and the error message will include the pipeline's output followed by
 error messages describing the abnormal terminations; the
-\fBerrorCode\fR variable will contain additional information
+\fB\-errorcode\fR return option will contain additional information
 about the last abnormal termination encountered.
 If any of the commands writes to its standard error file and that
-standard error isn't redirected,
+standard error is not redirected
+.VS 8.5
+and \fB\-ignorestderr\fR is not specified,
+.VE 8.5
 then \fBexec\fR will return an error;  the error message
 will include the pipeline's standard output, followed by messages
 about abnormal terminations (if any), followed by the standard error
@@ -135,22 +158,27 @@ output.
 If the last character of the result or error message
 is a newline then that character is normally deleted
 from the result or error message.
-This is consistent with other Tcl return values, which don't
+This is consistent with other Tcl return values, which do not
 normally end with newlines.
 However, if \fB\-keepnewline\fR is specified then the trailing
 newline is retained.
 .PP
-If standard input isn't redirected with ``<'' or ``<<''
-or ``<@'' then the standard input for the first command in the
+If standard input is not redirected with
+.QW < ,
+.QW <<
+or
+.QW <@
+then the standard input for the first command in the
 pipeline is taken from the application's current standard input.
 .PP
-If the last \fIarg\fR is ``&'' then the pipeline will be
-executed in background.
+If the last \fIarg\fR is
+.QW &
+then the pipeline will be executed in background.
 In this case the \fBexec\fR command will return a list whose
 elements are the process identifiers for all of the subprocesses
 in the pipeline.
 The standard output from the last command in the pipeline will
-go to the application's standard output if it hasn't been
+go to the application's standard output if it has not been
 redirected, and error output from all of
 the commands in the pipeline will go to the application's
 standard error file unless redirected.
@@ -162,26 +190,28 @@ in the PATH environment variable are searched for
 an executable by the given name.
 If the name contains a slash then it must refer to an executable
 reachable from the current directory.
-No ``glob'' expansion or other shell-like substitutions
+No
+.QW glob
+expansion or other shell-like substitutions
 are performed on the arguments to commands.
-
-.VS
 .SH "PORTABILITY ISSUES"
 .TP
 \fBWindows\fR (all versions)
 .
-Reading from or writing to a socket, using the ``\fB@\0\fIfileId\fR''
+Reading from or writing to a socket, using the
+.QW \fB@\0\fIfileId\fR
 notation, does not work.  When reading from a socket, a 16-bit DOS
 application will hang and a 32-bit application will return immediately with
 end-of-file.  When either type of application writes to a socket, the
 information is instead sent to the console, if one is present, or is
 discarded.
-.sp
+.RS
+.PP
 The Tk console text widget does not provide real standard IO capabilities.
 Under Tk, when redirecting from standard input, all applications will see an
 immediate end-of-file; information redirected to standard output or standard
 error will be discarded.  
-.sp
+.PP
 Either forward or backward slashes are accepted as path separators for
 arguments to Tcl commands.  When executing an application, the path name
 specified for the application may also contain forward or backward slashes
@@ -192,12 +222,16 @@ path name with forward slashes will not automatically be converted to use
 the backslash character.  If an argument contains forward slashes as the
 path separator, it may or may not be recognized as a path name, depending on
 the program.  
-.sp
+.PP
 Additionally, when calling a 16-bit DOS or Windows 3.X application, all path
-names must use the short, cryptic, path format (e.g., using ``applba~1.def''
-instead of ``applbakery.default''), which can be obtained with the
-\fBfile attributes $fileName -shortname\fR command.
-.sp
+names must use the short, cryptic, path format (e.g., using
+.QW applba~1.def
+instead of
+.QW applbakery.default ),
+which can be obtained with the
+.QW "\fBfile attributes \fIfileName \fB\-shortname\fR"
+command.
+.PP
 Two or more forward or backward slashes in a row in a path refer to a
 network path.  For example, a simple concatenation of the root directory
 \fBc:/\fR with a subdirectory \fB/windows/system\fR will yield
@@ -206,25 +240,25 @@ point called \fBsystem\fR on the machine called \fBwindows\fR (and the
 \fBc:/\fR is ignored), and is not equivalent to \fBc:/windows/system\fR,
 which describes a directory on the current computer.  The \fBfile join\fR
 command should be used to concatenate path components.
-.sp
-.RS
+.PP
 Note that there are two general types of Win32 console applications:
 .RS
-1) CLI -- CommandLine Interface, simple stdio exchange. \fBnetstat.exe\fR for
+.IP [1]
+CLI \(em CommandLine Interface, simple stdio exchange. \fBnetstat.exe\fR for
 example.
-.br
-2) TUI -- Textmode User Interface, any application that accesses the console
+.IP [2]
+TUI \(em Textmode User Interface, any application that accesses the console
 API for doing such things as cursor movement, setting text color, detecting
 key presses and mouse movement, etc.  An example would be \fBtelnet.exe\fR
 from Windows 2000.  These types of applications are not common in a windows
 environment, but do exist.
 .RE
+.PP
 \fBexec\fR will not work well with TUI applications when a console is not
 present, as is done when launching applications under wish.  It is desirable
 to have console applications hidden and detached.  This is a designed-in
 limitation as \fBexec\fR wants to communicate over pipes.  The Expect
 extension addresses this issue when communicating with a TUI application.
-.sp
 .RE
 .TP
 \fBWindows NT\fR
@@ -235,26 +269,24 @@ the name as it was specified.  Then, in order, \fB.com\fR, \fB.exe\fR, and
 for the longer name.  If a directory name was not specified as part of the
 application name, the following directories are automatically searched in
 order when attempting to locate the application:
-.sp
-.RS
 .RS
+.IP \(bu
 The directory from which the Tcl executable was loaded.
-.br
+.IP \(bu
 The current directory.
-.br
+.IP \(bu
 The Windows NT 32-bit system directory.
-.br
+.IP \(bu
 The Windows NT 16-bit system directory.
-.br
+.IP \(bu
 The Windows NT home directory.
-.br
+.IP \(bu
 The directories listed in the path.
-.RE
-.sp
+.PP
 In order to execute shell built-in commands like \fBdir\fR and \fBcopy\fR,
-the caller must prepend the desired command with ``\fBcmd.exe /c\0\fR''
+the caller must prepend the desired command with
+.QW "\fBcmd.exe /c\0\fR"
 because built-in commands are not implemented using executables.
-.sp
 .RE
 .TP
 \fBWindows 9x\fR
@@ -265,39 +297,42 @@ the name as it was specified.  Then, in order, \fB.com\fR, \fB.exe\fR, and
 for the longer name.  If a directory name was not specified as part of the
 application name, the following directories are automatically searched in
 order when attempting to locate the application:
-.sp
-.RS
 .RS
+.IP \(bu
 The directory from which the Tcl executable was loaded.
-.br
+.IP \(bu
 The current directory.
-.br
+.IP \(bu
 The Windows 9x system directory.
-.br
+.IP \(bu
 The Windows 9x home directory.
-.br
+.IP \(bu
 The directories listed in the path.
 .RE
-.sp
+.RS
+.PP
 In order to execute shell built-in commands like \fBdir\fR and \fBcopy\fR,
-the caller must prepend the desired command with ``\fBcommand.com /c\0\fR''
+the caller must prepend the desired command with
+.QW "\fBcommand.com /c\0\fR"
 because built-in commands are not implemented using executables.
-.sp
+.PP
 Once a 16-bit DOS application has read standard input from a console and 
 then quit, all subsequently run 16-bit DOS applications will see the 
 standard input as already closed.  32-bit applications do not have this
 problem and will run correctly, even after a 16-bit DOS application thinks 
 that standard input is closed.  There is no known workaround for this bug
 at this time.
-.sp
+.PP
 Redirection between the \fBNUL:\fR device and a 16-bit application does not
 always work.  When redirecting from \fBNUL:\fR, some applications may hang,
-others will get an infinite stream of ``0x01'' bytes, and some will actually
+others will get an infinite stream of
+.QW 0x01
+bytes, and some will actually
 correctly get an immediate end-of-file; the behavior seems to depend upon 
 something compiled into the application itself.  When redirecting greater than
 4K or so to \fBNUL:\fR, some applications will hang.  The above problems do not
 happen with 32-bit applications.  
-.sp
+.PP
 All DOS 16-bit applications are run synchronously.  All standard input from
 a pipe to a 16-bit DOS application is collected into a temporary file; the
 other end of the pipe must be closed before the 16-bit DOS application
@@ -307,7 +342,7 @@ must terminate before the temporary files are redirected to the next stage
 of the pipeline.  This is due to a workaround for a Windows 95 bug in the
 implementation of pipes, and is how the standard Windows 95 DOS shell
 handles pipes itself.
-.sp
+.PP
 Certain applications, such as \fBcommand.com\fR, should not be executed
 interactively.  Applications which directly access the console window,
 rather than reading from their standard input and writing to their standard
@@ -317,7 +352,6 @@ console window is not available to them.
 .TP
 \fBUnix\fR\0\0\0\0\0\0\0
 The \fBexec\fR command is fully functional and works as described.
-
 .SH "UNIX EXAMPLES"
 Here are some examples of the use of the \fBexec\fR command on Unix.
 .PP
@@ -327,13 +361,14 @@ To execute a simple program and get its result:
 .CE
 .PP
 To execute a program that can return a non-zero result, you should
-wrap the call to \fBexec\fR in \fBcatch\fR and check what the contents
-of the global \fBerrorCode\fR variable is if you have an error:
+wrap the call to \fBexec\fR in \fBcatch\fR and check the contents
+of the \fB\-errorcode\fR return option if you have an error:
 .CS
 set status 0
-if {[catch {\fBexec\fR grep foo bar.txt} results]} {
-   if {[lindex $::errorCode 0] eq "CHILDSTATUS"} {
-      set status [lindex $::errorCode 2]
+if {[catch {\fBexec\fR grep foo bar.txt} results options]} {
+   set details [dict get $options -errorcode]
+   if {[lindex $details 0] eq "CHILDSTATUS"} {
+      set status [lindex $details 2]
    } else {
       # Some kind of unexpected failure
    }
@@ -356,9 +391,8 @@ remember that Tcl does not handle globbing or expand things into
 multiple arguments by default.  Instead you should write things like
 this:
 .CS
-eval [list \fBexec\fR ls -l] [glob *.tcl]
+\fBexec\fR ls -l {*}[glob *.tcl]
 .CE
-.PP
 .SH "WINDOWS EXAMPLES"
 Here are some examples of the use of the \fBexec\fR command on Windows.
 .PP
@@ -392,15 +426,15 @@ differences in behaviour between \fBexec\fR and DOS batch files.
 .PP
 When in doubt, use the command \fBauto_execok\fR: it will return the
 complete path to the program as seen by the \fBexec\fR command.  This
-applies especially when you want to run "internal" commands like
+applies especially when you want to run
+.QW internal
+commands like
 \fIdir\fR from a Tcl script (if you just want to list filenames, use
 the \fBglob\fR command.)  To do that, use this:
 .CS
-eval [list \fBexec\fR] [auto_execok dir] [list *.tcl]
+\fBexec\fR {*}[auto_execok dir] *.tcl
 .CE
-
 .SH "SEE ALSO"
 error(n), open(n)
-
 .SH KEYWORDS
 execute, pipeline, redirection, subprocess
diff --git a/doc/exit.n b/doc/exit.n
index 5d1dc0b..eccd635 100644
--- a/doc/exit.n
+++ b/doc/exit.n
@@ -19,23 +19,23 @@ exit \- End the application
 .PP
 Terminate the process, returning \fIreturnCode\fR to the
 system as the exit status.
-If \fIreturnCode\fR isn't specified then it defaults
+If \fIreturnCode\fR is not specified then it defaults
 to 0.
 .SH EXAMPLE
 Since non-zero exit codes are usually interpreted as error cases by
 the calling process, the \fBexit\fR command is an important part of
-signalling that something fatal has gone wrong.  This code fragment is
+signaling that something fatal has gone wrong. This code fragment is
 useful in scripts to act as a general problem trap:
 .CS
 proc main {} {
     # ... put the real main code in here ...
 }
 
-if {[catch {main} msg]} {
+if {[catch {main} msg options]} {
     puts stderr "unexpected script error: $msg"
     if {[info exist env(DEBUG)]} {
         puts stderr "---- BEGIN TRACE ----"
-        puts stderr $errorInfo
+        puts stderr [dict get $options -errorinfo]
         puts stderr "---- END TRACE ----"
     }
 
@@ -45,7 +45,7 @@ if {[catch {main} msg]} {
 .CE
 
 .SH "SEE ALSO"
-exec(n), tclvars(n)
+exec(n)
 
 .SH KEYWORDS
 exit, process
diff --git a/doc/expr.n b/doc/expr.n
index 4c8903a..dbc9026 100644
--- a/doc/expr.n
+++ b/doc/expr.n
@@ -1,12 +1,13 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-2000 Sun Microsystems, Inc.
+'\" Copyright (c) 2005 by Kevin B. Kenny <kennykb@acm.org>. All rights reserved
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH expr n 8.4 Tcl "Tcl Built-In Commands"
+.TH expr n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
@@ -14,14 +15,14 @@ expr \- Evaluate an expression
 .SH SYNOPSIS
 \fBexpr \fIarg \fR?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 Concatenates \fIarg\fRs (adding separator spaces between them),
 evaluates the result as a Tcl expression, and returns the value.
-The operators permitted in Tcl expressions are a subset of
-the operators permitted in C expressions, and they have the
-same meaning and precedence as the corresponding C operators.
+The operators permitted in Tcl expressions include a subset of
+the operators permitted in C expressions.  For those operators
+common to both Tcl and C, Tcl applies the same meaning and precedence
+as the corresponding C operators.
 Expressions almost always yield numeric results
 (integer or floating-point values).
 For example, the expression
@@ -31,36 +32,38 @@ For example, the expression
 evaluates to 14.2.
 Tcl expressions differ from C expressions in the way that
 operands are specified.  Also, Tcl expressions support
-non-numeric operands and string comparisons.
-.SH OPERANDS
+non-numeric operands and string comparisons, as well as some
+additional operators not found in C.
+.SS OPERANDS
 .PP
 A Tcl expression consists of a combination of operands, operators,
 and parentheses.
 White space may be used between the operands and operators and
 parentheses; it is ignored by the expression's instructions.
 Where possible, operands are interpreted as integer values.
-Integer values may be specified in decimal (the normal case), in octal (if the
-first character of the operand is \fB0\fR), or in hexadecimal (if the first
-two characters of the operand are \fB0x\fR).
+.VS 8.5
+Integer values may be specified in decimal (the normal case), in binary
+(if the first two characters of the operand are \fB0b\fR), in octal
+(if the first two characters of the operand are \fB0o\fR), or in hexadecimal
+(if the first two characters of the operand are \fB0x\fR).  For
+compatibility with older Tcl releases, an octal integer value is also
+indicated simply when the first character of the operand is \fB0\fR,
+whether or not the second character is also \fBo\fR.
 If an operand does not have one of the integer formats given
 above, then it is treated as a floating-point number if that is
-possible.  Floating-point numbers may be specified in any of the
-ways accepted by an ANSI-compliant C compiler (except that the
-\fBf\fR, \fBF\fR, \fBl\fR, and \fBL\fR suffixes will not be permitted in
-most installations).  For example, all of the
+possible.  Floating-point numbers may be specified in any of several
+common formats making use of the decimal digits, the decimal point \fB.\fR,
+the characters \fBe\fR or \fBE\fR indicating scientific notation, and
+the sign characters \fB+\fR or \fB\-\fR.  For example, all of the
 following are valid floating-point numbers:  2.1, 3., 6e4, 7.91e+16.
+Also recognized as floating point values are the strings \fBInf\fR
+and \fBNaN\fR making use of any case for each character.
+.VE 8.5
 If no numeric interpretation is possible (note that all literal
 operands that are not numeric or boolean must be quoted with either
 braces or with double quotes), then an operand is left as a string
 (and only a limited set of operators may be applied to it).
 .PP
-.VS 8.4
-On 32-bit systems, integer values MAX_INT (0x7FFFFFFF) and MIN_INT
-(-0x80000000) will be represented as 32-bit values, and integer values
-outside that range will be represented as 64-bit values (if that is
-possible at all.)
-.VE 8.4
-.PP
 Operands may be specified in any of the following ways:
 .IP [1]
 As a numeric value, either integer or floating-point.
@@ -84,8 +87,8 @@ The command will be executed and its result will be used as
 the operand.
 .IP [7]
 As a mathematical function whose arguments have any of the above
-forms for operands, such as \fBsin($x)\fR.  See below for a list of defined
-functions.
+forms for operands, such as \fBsin($x)\fR.  See \fBMATH FUNCTIONS\fR below for
+a discussion of how mathematical functions are handled.
 .LP
 Where the above substitutions occur (e.g. inside quoted strings), they
 are performed by the expression's instructions.
@@ -102,27 +105,46 @@ Then the command on the left side of each of the lines below
 will produce the value on the right side of the line:
 .CS
 .ta 6c
-\fBexpr 3.1 + $a	6.1
-expr 2 + "$a.$b"	5.6
-expr 4*[llength "6 2"]	8
-expr {{word one} < "word $a"}	0\fR
+\fBexpr\fR 3.1 + $a	\fI6.1\fR
+\fBexpr\fR 2 + "$a.$b"	\fI5.6\fR
+\fBexpr\fR 4*[llength "6 2"]	\fI8\fR
+\fBexpr\fR {{word one} < "word $a"}	\fI0\fR
 .CE
-.SH OPERATORS
+.SS OPERATORS
 .PP
-The valid operators are listed below, grouped in decreasing order
-of precedence:
+The valid operators (most of which are also available as commands in
+the \fBtcl::mathop\fR namespace; see the \fBmathop\fR(n) manual page
+for details) are listed below, grouped in decreasing order of precedence:
 .TP 20
 \fB\-\0\0+\0\0~\0\0!\fR
 Unary minus, unary plus, bit-wise NOT, logical NOT.  None of these operators
 may be applied to string operands, and bit-wise NOT may be
 applied only to integers.
 .TP 20
+\fB**\fR
+.VS 8.5
+Exponentiation.  Valid for any numeric operands.
+.VE 8.5
+.TP 20
 \fB*\0\0/\0\0%\fR
 Multiply, divide, remainder.  None of these operators may be
 applied to string operands, and remainder may be applied only
 to integers.
 The remainder will always have the same sign as the divisor and
-an absolute value smaller than the divisor.
+an absolute value smaller than the absolute value of the divisor.
+.RS
+.PP
+When applied to integers, the division and remainder operators can be
+considered to partition the number line into a sequence of equal-sized
+adjacent non-overlapping pieces where each piece is the size of the divisor;
+the division result identifies which piece the divisor lay within, and the
+remainder result identifies where within that piece the divisor lay. A
+consequence of this is that the result of
+.QW "-57 \fB/\fR 10"
+is always -6, and the result of
+.QW "-57 \fB%\fR 10"
+is always 3.
+.RE
 .TP 20
 \fB+\0\0\-\fR
 Add and subtract.  Valid for any numeric operands.
@@ -140,12 +162,19 @@ in which case string comparison is used.
 \fB==\0\0!=\fR
 Boolean equal and not equal.  Each operator produces a zero/one result.
 Valid for all operand types.
-.VS 8.4
 .TP 20
 \fBeq\0\0ne\fR
 Boolean string equal and string not equal.  Each operator produces a
 zero/one result.  The operand types are interpreted only as strings.
-.VE 8.4
+.TP 20
+\fBin\0\0ni\fR
+.VS 8.5
+List containment and negated list containment.  Each operator produces
+a zero/one result and treats its first argument as a string and its
+second argument as a Tcl list.  The \fBin\fR operator indicates
+whether the first argument is a member of the second argument list;
+the \fBni\fR operator inverts the sense of the result.
+.VE 8.5
 .TP 20
 \fB&\fR
 Bit-wise AND.  Valid for integer operands only.
@@ -173,168 +202,84 @@ The \fIx\fR operand must have a boolean or numeric value.
 .LP
 See the C manual for more details on the results
 produced by each operator.
+.VS 8.5
+The exponentiation operator promotes types like the multiply and
+divide operators, and produces a result that is the same as the output
+of the \fBpow\fR function (after any type conversions.)
+.VE 8.5
 All of the binary operators group left-to-right within the same
 precedence level.  For example, the command
 .CS
-\fBexpr 4*2 < 7\fR
+\fBexpr\fR {4*2 < 7}
 .CE
 returns 0.
 .PP
-The \fB&&\fR, \fB||\fR, and \fB?:\fR operators have ``lazy
-evaluation'', just as in C, 
-which means that operands are not evaluated if they are
+The \fB&&\fR, \fB||\fR, and \fB?:\fR operators have
+.QW "lazy evaluation" ,
+just as in C, which means that operands are not evaluated if they are
 not needed to determine the outcome.  For example, in the command
 .CS
 \fBexpr {$v ? [a] : [b]}\fR
 .CE
-only one of \fB[a]\fR or \fB[b]\fR will actually be evaluated,
+only one of
+.QW \fB[a]\fR
+or
+.QW \fB[b]\fR
+will actually be evaluated,
 depending on the value of \fB$v\fR.  Note, however, that this is
 only true if the entire expression is enclosed in braces;  otherwise
-the Tcl parser will evaluate both \fB[a]\fR and \fB[b]\fR before
-invoking the \fBexpr\fR command.
-.SH "MATH FUNCTIONS"
+the Tcl parser will evaluate both
+.QW \fB[a]\fR
+and
+.QW \fB[b]\fR
+before invoking the \fBexpr\fR command.
+.SS "MATH FUNCTIONS"
+.PP
+.VS 8.5
+When the expression parser encounters a mathematical function
+such as \fBsin($x)\fR, it replaces it with a call to an ordinary
+Tcl function in the \fBtcl::mathfunc\fR namespace.  The processing
+of an expression such as:
+.CS
+\fBexpr {sin($x+$y)}\fR
+.CE
+is the same in every way as the processing of:
+.CS
+\fBexpr {[tcl::mathfunc::sin [expr {$x+$y}]]}\fR
+.CE
+which in turn is the same as the processing of:
+.CS
+\fBtcl::mathfunc::sin [expr {$x+$y}]\fR
+.CE
 .PP
-Tcl supports the following mathematical functions in expressions, all
-of which work solely with floating-point numbers unless otherwise noted:
-.DS
-.ta 3c 6c 9c
-\fBabs\fR	\fBcosh\fR	\fBlog\fR	\fBsqrt\fR
-\fBacos\fR	\fBdouble\fR	\fBlog10\fR	\fBsrand\fR
-\fBasin\fR	\fBexp\fR	\fBpow\fR	\fBtan\fR
-\fBatan\fR	\fBfloor\fR	\fBrand\fR	\fBtanh\fR
-\fBatan2\fR	\fBfmod\fR	\fBround\fR	\fBwide\fR
-\fBceil\fR	\fBhypot\fR	\fBsin\fR
-\fBcos\fR	\fBint\fR	\fBsinh\fR
-.DE
+The executor will search for \fBtcl::mathfunc::sin\fR using the usual
+rules for resolving functions in namespaces. Either
+\fB::tcl::mathfunc::sin\fR or \fB[namespace
+current]::tcl::mathfunc::sin\fR will satisfy the request, and others
+may as well (depending on the current \fBnamespace path\fR setting).
 .PP
-.TP
-\fBabs(\fIarg\fB)\fR
-Returns the absolute value of \fIarg\fR.  \fIArg\fR may be either
-integer or floating-point, and the result is returned in the same form.
-.TP
-\fBacos(\fIarg\fB)\fR
-Returns the arc cosine of \fIarg\fR, in the range [\fI0\fR,\fIpi\fR]
-radians. \fIArg\fR should be in the range [\fI-1\fR,\fI1\fR].
-.TP
-\fBasin(\fIarg\fB)\fR
-Returns the arc sine of \fIarg\fR, in the range [\fI-pi/2\fR,\fIpi/2\fR]
-radians.  \fIArg\fR should be in the range [\fI-1\fR,\fI1\fR].
-.TP
-\fBatan(\fIarg\fB)\fR
-Returns the arc tangent of \fIarg\fR, in the range [\fI-pi/2\fR,\fIpi/2\fR]
-radians.
-.TP
-\fBatan2(\fIy, x\fB)\fR
-Returns the arc tangent of \fIy\fR/\fIx\fR, in the range [\fI-pi\fR,\fIpi\fR]
-radians.  \fIx\fR and \fIy\fR cannot both be 0.  If \fIx\fR is greater
-than \fI0\fR, this is equivalent to \fBatan(\fIy/x\fB)\fR.
-.TP
-\fBceil(\fIarg\fB)\fR
-Returns the smallest integral floating-point value (i.e. with a zero
-fractional part) not less than \fIarg\fR.
-.TP
-\fBcos(\fIarg\fB)\fR
-Returns the cosine of \fIarg\fR, measured in radians.
-.TP
-\fBcosh(\fIarg\fB)\fR
-Returns the hyperbolic cosine of \fIarg\fR.  If the result would cause
-an overflow, an error is returned.
-.TP
-\fBdouble(\fIarg\fB)\fR
-If \fIarg\fR is a floating-point value, returns \fIarg\fR, otherwise converts
-\fIarg\fR to floating-point and returns the converted value.
-.TP
-\fBexp(\fIarg\fB)\fR
-Returns the exponential of \fIarg\fR, defined as \fIe\fR**\fIarg\fR.
-If the result would cause an overflow, an error is returned.
-.TP
-\fBfloor(\fIarg\fB)\fR
-Returns the largest integral floating-point value (i.e. with a zero
-fractional part) not greater than \fIarg\fR.
-.TP
-\fBfmod(\fIx, y\fB)\fR
-Returns the floating-point remainder of the division of \fIx\fR by
-\fIy\fR.  If \fIy\fR is 0, an error is returned.
-.TP
-\fBhypot(\fIx, y\fB)\fR
-Computes the length of the hypotenuse of a right-angled triangle
-\fBsqrt(\fIx\fR*\fIx\fR+\fIy\fR*\fIy\fB)\fR.
-.TP
-\fBint(\fIarg\fB)\fR
-.VS 8.4
-If \fIarg\fR is an integer value of the same width as the machine
-word, returns \fIarg\fR, otherwise
-converts \fIarg\fR to an integer (of the same size as a machine word,
-i.e. 32-bits on 32-bit systems, and 64-bits on 64-bit systems) by
-truncation and returns the converted value.
-.VE 8.4
-.TP
-\fBlog(\fIarg\fB)\fR
-Returns the natural logarithm of \fIarg\fR.  \fIArg\fR must be a
-positive value.
-.TP
-\fBlog10(\fIarg\fB)\fR
-Returns the base 10 logarithm of \fIarg\fR.  \fIArg\fR must be a
-positive value.
-.TP
-\fBpow(\fIx, y\fB)\fR
-Computes the value of \fIx\fR raised to the power \fIy\fR.  If \fIx\fR
-is negative, \fIy\fR must be an integer value.
-.TP
-\fBrand()\fR
-Returns a pseudo-random floating-point value in the range (\fI0\fR,\fI1\fR).  
-The generator algorithm is a simple linear congruential generator that
-is not cryptographically secure.  Each result from \fBrand\fR completely
-determines all future results from subsequent calls to \fBrand\fR, so
-\fBrand\fR should not be used to generate a sequence of secrets, such as
-one-time passwords.  The seed of the generator is initialized from the
-internal clock of the machine or may be set with the \fBsrand\fR function.
-.TP
-\fBround(\fIarg\fB)\fR
-If \fIarg\fR is an integer value, returns \fIarg\fR, otherwise converts
-\fIarg\fR to integer by rounding and returns the converted value.
-.TP
-\fBsin(\fIarg\fB)\fR
-Returns the sine of \fIarg\fR, measured in radians.
-.TP
-\fBsinh(\fIarg\fB)\fR
-Returns the hyperbolic sine of \fIarg\fR.  If the result would cause
-an overflow, an error is returned.
-.TP
-\fBsqrt(\fIarg\fB)\fR
-Returns the square root of \fIarg\fR.  \fIArg\fR must be non-negative.
-.TP
-\fBsrand(\fIarg\fB)\fR
-The \fIarg\fR, which must be an integer, is used to reset the seed for
-the random number generator of \fBrand\fR.  Returns the first random
-number (see \fBrand()\fR) from that seed.  Each interpreter has its own seed.
-.TP
-\fBtan(\fIarg\fB)\fR
-Returns the tangent of \fIarg\fR, measured in radians.
-.TP
-\fBtanh(\fIarg\fB)\fR
-Returns the hyperbolic tangent of \fIarg\fR.
-.TP
-\fBwide(\fIarg\fB)\fR
-.VS 8.4
-Converts \fIarg\fR to an integer value at least 64-bits wide (by sign-extension
-if \fIarg\fR is a 32-bit number) if it is not one already.
-.VE 8.4
+See the \fBmathfunc\fR(n) manual page for the math functions that are
+available by default.
+.VE 8.5
+.SS "TYPES, OVERFLOW, AND PRECISION"
 .PP
-In addition to these predefined functions, applications may
-define additional functions using \fBTcl_CreateMathFunc\fR().
-.SH "TYPES, OVERFLOW, AND PRECISION"
+.VS 8.5
+All internal computations involving integers are done calling on the
+LibTomMath multiple precision integer library as required so that all
+integer calculations are performed exactly.  Note that in Tcl releases
+prior to 8.5, integer calculations were performed with one of the C types
+\fIlong int\fR or \fITcl_WideInt\fR, causing implicit range truncation
+in those calculations where values overflowed the range of those types.
+Any code that relied on these implicit truncations will need to explicitly
+add \fBint()\fR or \fBwide()\fR function calls to expressions at the points
+where such truncation is required to take place.
+.VE 8.5
 .PP
-All internal computations involving integers are done with the C type
-\fIlong\fR, and all internal computations involving floating-point are
+All internal computations involving floating-point are
 done with the C type \fIdouble\fR.
 When converting a string to floating-point, exponent overflow is
-detected and results in a Tcl error.
-For conversion to integer from string, detection of overflow depends
-on the behavior of some routines in the local C library, so it should
-be regarded as unreliable.
-In any case, integer overflow and underflow are generally not detected
-reliably for intermediate results.  Floating-point overflow and underflow
+detected and results in the \fIdouble\fR value of \fBInf\fR or
+\fB\-Inf\fR as appropriate.  Floating-point overflow and underflow
 are detected to the degree supported by the hardware, which is generally
 pretty reliable.
 .PP
@@ -344,35 +289,37 @@ For arithmetic computations, integers are used until some
 floating-point number is introduced, after which floating-point is used.
 For example,
 .CS
-\fBexpr 5 / 4\fR
+\fBexpr\fR {5 / 4}
 .CE
 returns 1, while
 .CS
-\fBexpr 5 / 4.0\fR
-\fBexpr 5 / ( [string length "abcd"] + 0.0 )\fR
+\fBexpr\fR {5 / 4.0}
+\fBexpr\fR {5 / ( [string length "abcd"] + 0.0 )}
 .CE
 both return 1.25.
-Floating-point values are always returned with a ``\fB.\fR''
-or an \fBe\fR so that they will not look like integer values.  For
-example,
+Floating-point values are always returned with a
+.QW \fB.\fR
+or an
+.QW \fBe\fR
+so that they will not look like integer values.  For example,
 .CS
-\fBexpr 20.0/5.0\fR
+\fBexpr\fR {20.0/5.0}
 .CE
 returns \fB4.0\fR, not \fB4\fR.
-.SH "STRING OPERATIONS"
+.SS "STRING OPERATIONS"
 .PP
 String values may be used as operands of the comparison operators,
 although the expression evaluator tries to do comparisons as integer
 or floating-point when it can,
 i.e., when all arguments to the operator allow numeric interpretations,
-.VS 8.4
 except in the case of the \fBeq\fR and \fBne\fR operators.
-.VE 8.4
 If one of the operands of a comparison is a string and the other
-has a numeric value, the numeric operand is converted back to
-a string using the C \fIsprintf\fR format specifier
-\fB%d\fR for integers and \fB%g\fR for floating-point values.
-For example, the commands
+has a numeric value, a canonical string representation of the numeric
+operand value is generated to compare with the string operand.
+Canonical string representation for integer values is a decimal string
+format.  Canonical string representation for floating-point values
+is that produced by the \fB%g\fR format specifier of Tcl's
+\fBformat\fR command.  For example, the commands
 .CS
 \fBexpr {"0x03" > "2"}\fR
 \fBexpr {"0y" > "0x12"}\fR
@@ -380,14 +327,10 @@ For example, the commands
 both return 1.  The first comparison is done using integer
 comparison, and the second is done using string comparison.
 Because of Tcl's tendency to treat values as numbers whenever
-possible, it isn't generally a good idea to use operators like \fB==\fR
+possible, it is not generally a good idea to use operators like \fB==\fR
 when you really want string comparison and the values of the
-operands could be arbitrary;  it's better in these cases to use
-.VS 8.4
-the \fBeq\fR or \fBne\fR operators, or
-.VE 8.4
-the \fBstring\fR command instead.
-
+operands could be arbitrary;  it is better in these cases to use
+the \fBeq\fR or \fBne\fR operators, or the \fBstring\fR command instead.
 .SH "PERFORMANCE CONSIDERATIONS"
 .PP
 Enclose expressions in braces for the best speed and the smallest
@@ -410,7 +353,7 @@ then the \fBexpr\fR command will evaluate the expression \fB$a + 2*4\fR.
 Most expressions do not require a second round of substitutions.
 Either they are enclosed in braces or, if not,
 their variable and command substitutions yield numbers or strings
-that don't themselves require substitutions.
+that do not themselves require substitutions.
 However, because a few unbraced expressions 
 need two rounds of substitutions,
 the bytecode compiler must emit
@@ -419,12 +362,18 @@ The most expensive code is required for
 unbraced expressions that contain command substitutions.
 These expressions must be implemented by generating new code
 each time the expression is executed.
+.VS 8.5
+When the expression is unbraced to allow the substitution of a function or
+operator, consider using the commands documented in the \fBmathfunc\fR(n) or
+\fBmathop\fR(n) manual pages directly instead.
+.VE 8.5
 .SH EXAMPLES
-Define a procedure that computes an "interesting" mathematical
-function:
+Define a procedure that computes an
+.QW interesting
+mathematical function:
 .CS
-proc calc {x y} {
-    \fBexpr\fR { ($x*$x - $y*$y) / exp($x*$x + $y*$y) }
+proc tcl::mathfunc::calc {x y} {
+    \fBexpr\fR { ($x**2 - $y**2) / exp($x**2 + $y**2) }
 }
 .CE
 .PP
@@ -461,9 +410,14 @@ Generate a random integer in the range 0..99 inclusive:
 .CS
 set randNum [\fBexpr\fR { int(100 * rand()) }]
 .CE
-
 .SH "SEE ALSO"
-array(n), for(n), if(n), string(n), Tcl(n), while(n)
-
+array(n), for(n), if(n), mathfunc(n), mathop(n), namespace(n), proc(n),
+string(n), Tcl(n), while(n)
 .SH KEYWORDS
 arithmetic, boolean, compare, expression, fuzzy comparison
+.SH COPYRIGHT
+.nf
+Copyright (c) 1993 The Regents of the University of California.
+Copyright (c) 1994-2000 Sun Microsystems Incorporated.
+Copyright (c) 2005 by Kevin B. Kenny <kennykb@acm.org>. All rights reserved.
+.fi
diff --git a/doc/fblocked.n b/doc/fblocked.n
index 08d8054..d8e8af7 100644
--- a/doc/fblocked.n
+++ b/doc/fblocked.n
@@ -24,12 +24,10 @@ characters available for input and no end-of-line sequence, \fBgets\fR
 returns an empty string and a subsequent call to \fBfblocked\fR will
 return 1.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as a
 Tcl standard channel (\fBstdin\fR, \fBstdout\fR, or \fBstderr\fR),
 the return value from an invocation of \fBopen\fR or \fBsocket\fR, or
 the result of a channel creation command provided by a Tcl extension.
-.VE
 .SH EXAMPLE
 The \fBfblocked\fR command is particularly useful when writing network
 servers, as it allows you to write your code in a line-by-line style
diff --git a/doc/fconfigure.n b/doc/fconfigure.n
index 19c8a61..0763232 100644
--- a/doc/fconfigure.n
+++ b/doc/fconfigure.n
@@ -47,7 +47,8 @@ channel can cause the process to block indefinitely.
 The value of the option must be a proper boolean value.
 Channels are normally in blocking mode;  if a channel is placed into
 nonblocking mode it will affect the operation of the \fBgets\fR,
-\fBread\fR, \fBputs\fR, \fBflush\fR, and \fBclose\fR commands;
+\fBread\fR, \fBputs\fR, \fBflush\fR, and \fBclose\fR commands by
+allowing them to operate asynchronously;
 see the documentation for those commands for details.
 For nonblocking mode to work correctly, the application must be
 using the Tcl event loop (e.g. by calling \fBTcl_DoOneEvent\fR or
@@ -89,11 +90,14 @@ If a file contains pure binary data (for instance, a JPEG image), the
 encoding for the channel should be configured to be \fBbinary\fR.  Tcl
 will then assign no interpretation to the data in the file and simply read or
 write raw bytes.  The Tcl \fBbinary\fR command can be used to manipulate this
-byte-oriented data.
+byte-oriented data.  It is usually better to set the
+\fB\-translation\fR option to \fBbinary\fR when you want to transfer
+binary data, as this turns off the other automatic interpretations of
+the bytes in the stream as well.
 .PP
 The default encoding for newly opened channels is the same platform- and
 locale-dependent system encoding used for interfacing with the operating
-system.  
+system, as returned by \fBencoding system\fR.
 .RE
 .TP
 \fB\-eofchar\fR \fIchar\fR
@@ -114,6 +118,9 @@ channel, a two-element list will always be returned.  The default value
 for \fB\-eofchar\fR is the empty string in all cases except for files
 under Windows.  In that case the \fB\-eofchar\fR is Control-z (\ex1a) for
 reading and the empty string for writing.
+The acceptable range for \fB\-eofchar\fR values is \ex01 - \ex7f;
+attempting to set \fB\-eofchar\fR to a value outside of this range will
+generate an error.
 .TP
 \fB\-translation\fR \fImode\fR
 .TP
@@ -124,11 +131,11 @@ newline character (\en).  However, in actual files and devices the end of
 a line may be represented differently on different platforms, or even for
 different devices on the same platform.  For example, under UNIX newlines
 are used in files, whereas carriage-return-linefeed sequences are
-normally used in network connections.  On input (i.e., with \fBgets\fP
-and \fBread\fP) the Tcl I/O system automatically translates the external
+normally used in network connections.  On input (i.e., with \fBgets\fR
+and \fBread\fR) the Tcl I/O system automatically translates the external
 end-of-line representation into newline characters.  Upon output (i.e.,
-with \fBputs\fP), the I/O system translates newlines to the external
-end-of-line representation.  The default translation mode, \fBauto\fP,
+with \fBputs\fR), the I/O system translates newlines to the external
+end-of-line representation.  The default translation mode, \fBauto\fR,
 handles all the common cases automatically, but the \fB\-translation\fR
 option provides explicit control over the end of line translations.
 .RS
@@ -146,25 +153,24 @@ currently supported:
 \fBauto\fR
 .
 As the input translation mode, \fBauto\fR treats any of newline
-(\fBlf\fP), carriage return (\fBcr\fP), or carriage return followed by a
-newline (\fBcrlf\fP) as the end of line representation.  The end of line
+(\fBlf\fR), carriage return (\fBcr\fR), or carriage return followed by a
+newline (\fBcrlf\fR) as the end of line representation.  The end of line
 representation can even change from line-to-line, and all cases are
 translated to a newline.  As the output translation mode, \fBauto\fR
 chooses a platform specific representation; for sockets on all platforms
-Tcl chooses \fBcrlf\fR, for all Unix flavors, it chooses \fBlf\fR and for
-the various flavors of
-Windows it chooses \fBcrlf\fR.  The default setting for
-\fB\-translation\fR is \fBauto\fR for both input and output.
+Tcl chooses \fBcrlf\fR, for all Unix flavors, it chooses \fBlf\fR, and
+for the various flavors of Windows it chooses \fBcrlf\fR.  The default
+setting for \fB\-translation\fR is \fBauto\fR for both input and output.
 .TP
 \fBbinary\fR 
 .
 No end-of-line translations are performed.  This is nearly identical to
-\fBlf\fP mode, except that in addition \fBbinary\fP mode also sets the
+\fBlf\fR mode, except that in addition \fBbinary\fR mode also sets the
 end-of-file character to the empty string (which disables it) and sets the
 encoding to \fBbinary\fR (which disables encoding filtering).  See the
 description of \fB\-eofchar\fR and \fB\-encoding\fR for more information.
-.PP
 .RS
+.PP
 Internally, i.e. when it comes to the actual behaviour of the
 translator this value \fBis\fR identical to \fBlf\fR and is therefore
 reported as such when queried. Even if \fBbinary\fR was used to set
@@ -175,17 +181,17 @@ the translation.
 .
 The end of a line in the underlying file or device is represented by a
 single carriage return character.  As the input translation mode,
-\fBcr\fP mode converts carriage returns to newline characters.  As the
-output translation mode, \fBcr\fP mode translates newline characters to
-carriage returns.  This mode is typically used on Macintosh platforms.
+\fBcr\fR mode converts carriage returns to newline characters.  As the
+output translation mode, \fBcr\fR mode translates newline characters to
+carriage returns.
 .TP
 \fBcrlf\fR
 .
 The end of a line in the underlying file or device is represented by a
 carriage return character followed by a linefeed character.  As the input
-translation mode, \fBcrlf\fP mode converts carriage-return-linefeed
+translation mode, \fBcrlf\fR mode converts carriage-return-linefeed
 sequences to newline characters.  As the output translation mode,
-\fBcrlf\fP mode translates newline characters to carriage-return-linefeed
+\fBcrlf\fR mode translates newline characters to carriage-return-linefeed
 sequences.  This mode is typically used on Windows platforms and for
 network connections.
 .TP
@@ -251,12 +257,12 @@ set words {}
 while {[llength $words] < 3} {
    gets $f line
    if {[string match "#*" $line]} continue
-   lappend words [eval concat [scan $line %d%d%d]]
+   lappend words {*}[join [scan $line %d%d%d]]
 }
 
 # Those words supply the size of the image and its
 # overall depth per channel. Assign to variables.
-foreach {xSize ySize depth} $words {break}
+lassign $words xSize ySize depth
 
 # Now switch to binary mode to pull in the data,
 # one byte per channel (red,green,blue) per pixel.
diff --git a/doc/fcopy.n b/doc/fcopy.n
index 3702f15..d583cf0 100644
--- a/doc/fcopy.n
+++ b/doc/fcopy.n
@@ -10,54 +10,56 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-fcopy \- Copy data from one channel to another.
+fcopy \- Copy data from one channel to another
 .SH SYNOPSIS
 \fBfcopy \fIinchan\fR \fIoutchan\fR ?\fB\-size \fIsize\fR? ?\fB\-command \fIcallback\fR?
 .BE
 
 .SH DESCRIPTION
 .PP
-The \fBfcopy\fP command copies data from one I/O channel, \fIinchan\fR to another I/O channel, \fIoutchan\fR.
-The \fBfcopy\fP command leverages the buffering in the Tcl I/O system to
+The \fBfcopy\fR command copies data from one I/O channel, \fIinchan\fR to another I/O channel, \fIoutchan\fR.
+The \fBfcopy\fR command leverages the buffering in the Tcl I/O system to
 avoid extra copies and to avoid buffering too much data in
 main memory when copying large files to slow destinations like
 network sockets.
 .PP
-The \fBfcopy\fP 
+The \fBfcopy\fR 
 command transfers data from \fIinchan\fR until end of file
-or \fIsize\fP bytes have been 
-transferred. If no \fB\-size\fP argument is given,
+or \fIsize\fR bytes have been 
+transferred. If no \fB\-size\fR argument is given,
 then the copy goes until end of file.
 All the data read from \fIinchan\fR is copied to \fIoutchan\fR.
-Without the \fB\-command\fP option, \fBfcopy\fP blocks until the copy is complete
+Without the \fB\-command\fR option, \fBfcopy\fR blocks until the copy is complete
 and returns the number of bytes written to \fIoutchan\fR.
 .PP
-The \fB\-command\fP argument makes \fBfcopy\fP work in the background.
-In this case it returns immediately and the \fIcallback\fP is invoked
+The \fB\-command\fR argument makes \fBfcopy\fR work in the background.
+In this case it returns immediately and the \fIcallback\fR is invoked
 later when the copy completes.
-The \fIcallback\fP is called with
+The \fIcallback\fR is called with
 one or two additional 
 arguments that indicates how many bytes were written to \fIoutchan\fR.
 If an error occurred during the background copy, the second argument is the
 error string associated with the error.
 With a background copy,
 it is not necessary to put \fIinchan\fR or \fIoutchan\fR into
-non-blocking mode; the \fBfcopy\fP command takes care of that automatically.
+non-blocking mode; the \fBfcopy\fR command takes care of that automatically.
 However, it is necessary to enter the event loop by using
-the \fBvwait\fP command or by using Tk.
+the \fBvwait\fR command or by using Tk.
 .PP
 You are not allowed to do other I/O operations with
-\fIinchan\fR or \fIoutchan\fR during a background fcopy.
+\fIinchan\fR or \fIoutchan\fR during a background \fBfcopy\fR.
 If either \fIinchan\fR or \fIoutchan\fR get closed
 while the copy is in progress, the current copy is stopped
-and the command callback is \fInot\fP made.
+and the command callback is \fInot\fR made.
 If \fIinchan\fR is closed,
 then all data already queued for \fIoutchan\fR is written out.
 .PP
 Note that \fIinchan\fR can become readable during a background copy.
-You should turn off any \fBfileevent\fP handlers during a background
+You should turn off any \fBfileevent\fR handlers during a background
 copy so those handlers do not interfere with the copy.
-Any I/O attempted by a \fBfileevent\fP handler will get a "channel busy" error.
+Any I/O attempted by a \fBfileevent\fR handler will get a
+.QW "channel busy"
+error.
 .PP
 \fBFcopy\fR translates end-of-line sequences in \fIinchan\fR and \fIoutchan\fR
 according to the \fB\-translation\fR option
@@ -67,30 +69,46 @@ See the manual entry for \fBfconfigure\fR for details on the
 The translations mean that the number of bytes read from \fIinchan\fR
 can be different than the number of bytes written to \fIoutchan\fR.
 Only the number of bytes written to \fIoutchan\fR is reported,
-either as the return value of a synchronous \fBfcopy\fP or
-as the argument to the callback for an asynchronous \fBfcopy\fP.
+either as the return value of a synchronous \fBfcopy\fR or
+as the argument to the callback for an asynchronous \fBfcopy\fR.
 .PP
-\fBFcopy\fR obeys the encodings configured for the channels. This
+\fBFcopy\fR obeys the encodings and character translations configured
+for the channels. This
 means that the incoming characters are converted internally first
 UTF-8 and then into the encoding of the channel \fBfcopy\fR writes
 to. See the manual entry for \fBfconfigure\fR for details on the
-\fB\-encoding\fR option. No conversion is done if both channels are
-set to encoding "binary". If only the output channel is set to
-encoding "binary" the system will write the internal UTF-8
-representation of the incoming characters. If only the input channel
-is set to encoding "binary" the system will assume that the incoming
+\fB\-encoding\fR and \fB\-translation\fR options. No conversion is
+done if both channels are
+set to encoding
+.QW binary
+and have matching translations. If only the output channel is set to encoding
+.QW binary
+the system will write the internal UTF-8 representation of the incoming
+characters. If only the input channel is set to encoding
+.QW binary
+the system will assume that the incoming
 bytes are valid UTF-8 characters and convert them according to the
 output encoding. The behaviour of the system for bytes which are not
 valid UTF-8 characters is undefined in this case.
 
-.SH EXAMPLE
+.SH EXAMPLES
 .PP
-This first example shows how the callback gets
+The first example transfers the contents of one channel exactly to
+another. Note that when copying one file to another, it is better to
+use \fBfile copy\fR which also copies file metadata (e.g. the file
+access permissions) where possible.
+.CS
+fconfigure $in -translation binary
+fconfigure $out -translation binary
+\fBfcopy\fR $in $out
+.CE
+.PP
+This second example shows how the callback gets
 passed the number of bytes transferred.
 It also uses vwait to put the application into the event loop.
 Of course, this simplified example could be done without the command 
 callback.
-.DS
+.CS
 proc Cleanup {in out bytes {error {}}} {
     global total
     set total $bytes
@@ -102,14 +120,13 @@ proc Cleanup {in out bytes {error {}}} {
 }
 set in [open $file1]
 set out [socket $server $port]
-fcopy $in $out -command [list Cleanup $in $out]
+\fBfcopy\fR $in $out -command [list Cleanup $in $out]
 vwait total
-
-.DE
+.CE
 .PP
-The second example copies in chunks and tests for end of file
+The third example copies in chunks and tests for end of file
 in the command callback
-.DS
+.CS
 proc CopyMore {in out chunk bytes {error {}}} {
     global total done
     incr total $bytes
@@ -118,21 +135,21 @@ proc CopyMore {in out chunk bytes {error {}}} {
 	close $in
 	close $out
     } else {
-	fcopy $in $out -command [list CopyMore $in $out $chunk] \\
-	    -size $chunk
+	\fBfcopy\fR $in $out -size $chunk \e
+                -command [list CopyMore $in $out $chunk]
     }
 }
 set in [open $file1]
 set out [socket $server $port]
 set chunk 1024
 set total 0
-fcopy $in $out -command [list CopyMore $in $out $chunk] -size $chunk
+\fBfcopy\fR $in $out -size $chunk \e
+        -command [list CopyMore $in $out $chunk]
 vwait done
-
-.DE
+.CE
 
 .SH "SEE ALSO"
-eof(n), fblocked(n), fconfigure(n)
+eof(n), fblocked(n), fconfigure(n), file(n)
 
 .SH KEYWORDS
 blocking, channel, end of line, end of file, nonblocking, read, translation
diff --git a/doc/file.n b/doc/file.n
index 6aeec52..b62d252 100644
--- a/doc/file.n
+++ b/doc/file.n
@@ -14,7 +14,6 @@ file \- Manipulate file names and attributes
 .SH SYNOPSIS
 \fBfile \fIoption\fR \fIname\fR ?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 This command provides several operations on a file's name or attributes.
@@ -30,7 +29,7 @@ Returns a decimal string giving the time at which file \fIname\fR was last
 accessed.  If \fItime\fR is specified, it is an access time to set
 for the file.  The time is measured in the standard POSIX fashion as
 seconds from a fixed starting time (often January 1, 1970).  If the file
-doesn't exist or its access time cannot be queried or set then an error is
+does not exist or its access time cannot be queried or set then an error is
 generated.  On Windows, FAT file systems do not support access time.
 .TP
 \fBfile attributes \fIname\fR
@@ -38,18 +37,19 @@ generated.  On Windows, FAT file systems do not support access time.
 \fBfile attributes \fIname\fR ?\fBoption\fR?
 .TP
 \fBfile attributes \fIname\fR ?\fBoption value option value...\fR?
-.RS
+.
 This subcommand returns or sets platform specific values associated
 with a file. The first form returns a list of the platform specific
 flags and their values. The second form returns the value for the
 specific option. The third form sets one or more of the values. The
 values are as follows:
+.RS
 .PP
-On Unix, \fB-group\fR gets or sets the group name for the file. A group id
-can be given to the command, but it returns a group name. \fB-owner\fR gets
+On Unix, \fB\-group\fR gets or sets the group name for the file. A group id
+can be given to the command, but it returns a group name. \fB\-owner\fR gets
 or sets the user name of the owner of the file. The command returns the
 owner name, but the numerical id can be passed when setting the
-owner. \fB-permissions\fR sets or retrieves the octal code that chmod(1)
+owner. \fB\-permissions\fR sets or retrieves the octal code that chmod(1)
 uses.  This command does also has limited support for setting using the
 symbolic attributes for chmod(1), of the form [ugo]?[[+\-=][rwxst],[...]],
 where multiple symbolic attributes can be separated by commas (example:
@@ -57,38 +57,49 @@ where multiple symbolic attributes can be separated by commas (example:
 permissions for group and other).  A simplified \fBls\fR style string,
 of the form rwxrwxrwx (must be 9 characters), is also supported
 (example: \fBrwxr\-xr\-t\fR is equivalent to 01755).
+On versions of Unix supporting file flags, \fB\-readonly\fR gives the
+value or sets or clears the readonly attribute of the file,
+i.e. the user immutable flag \fBuchg\fR to chflags(1).
 .PP
-On Windows, \fB-archive\fR gives the value or sets or clears the
-archive attribute of the file. \fB-hidden\fR gives the value or sets
-or clears the hidden attribute of the file. \fB-longname\fR will
+On Windows, \fB\-archive\fR gives the value or sets or clears the
+archive attribute of the file. \fB\-hidden\fR gives the value or sets
+or clears the hidden attribute of the file. \fB\-longname\fR will
 expand each path element to its long version. This attribute cannot be
-set. \fB-readonly\fR gives the value or sets or clears the readonly
-attribute of the file. \fB-shortname\fR gives a string where every
+set. \fB\-readonly\fR gives the value or sets or clears the readonly
+attribute of the file. \fB\-shortname\fR gives a string where every
 path element is replaced with its short (8.3) version of the
-name. This attribute cannot be set. \fB-system\fR gives or sets or
+name. This attribute cannot be set. \fB\-system\fR gives or sets or
 clears the value of the system attribute of the file.
+.PP
+On Mac OS X and Darwin, \fB\-creator\fR gives or sets the
+Finder creator type of the file. \fB\-hidden\fR gives or sets or clears
+the hidden attribute of the file. \fB\-readonly\fR gives or sets or
+clears the readonly attribute of the file. \fB\-rsrclength\fR gives
+the length of the resource fork of the file, this attribute can only be
+set to the value 0, which results in the resource fork being stripped
+off the file.
 .RE
-.VS
 .TP
 \fBfile channels ?\fIpattern\fR?
 .
-If \fIpattern\fR isn't specified, returns a list of names of all
+If \fIpattern\fR is not specified, returns a list of names of all
 registered open channels in this interpreter.  If \fIpattern\fR is
 specified, only those names matching \fIpattern\fR are returned.  Matching
 is determined using the same rules as for \fBstring match\fR.
-.VE
 .TP
 \fBfile copy \fR?\fB\-force\fR? ?\fB\-\|\-\fR? \fIsource\fR \fItarget\fR
 .TP
 \fBfile copy \fR?\fB\-force\fR? ?\fB\-\|\-\fR? \fIsource\fR ?\fIsource\fR ...? \fItargetDir\fR
-.RS
+.
 The first form makes a copy of the file or directory \fIsource\fR under
 the pathname \fItarget\fR. If \fItarget\fR is an existing directory,
 then the second form is used.  The second form makes a copy inside
 \fItargetDir\fR of each \fIsource\fR file listed.  If a directory is
 specified as a \fIsource\fR, then the contents of the directory will be
 recursively copied into \fItargetDir\fR. Existing files will not be
-overwritten unless the \fB\-force\fR option is specified.  When copying
+overwritten unless the \fB\-force\fR option is specified (when Tcl will
+also attempt to adjust permissions on the destination file or directory
+if that is necessary to allow the copy to proceed).  When copying
 within a single filesystem, \fIfile copy\fR will copy soft links (i.e.
 the links themselves are copied, not the things they point to).  Trying
 to overwrite a non-empty directory, overwrite a directory with a file,
@@ -97,7 +108,6 @@ or overwrite a file with a directory will all result in errors even if
 specified, halting at the first error, if any.  A \fB\-\|\-\fR marks
 the end of switches; the argument following the \fB\-\|\-\fR will be
 treated as a \fIsource\fR even if it starts with a \fB\-\fR.
-.RE
 .TP
 \fBfile delete \fR?\fB\-force\fR? ?\fB\-\|\-\fR? \fIpathname\fR ?\fIpathname\fR ... ?
 .
@@ -109,9 +119,11 @@ Trying to delete a non-existent file is not considered an error.
 Trying to delete a read-only file will cause the file to be deleted,
 even if the \fB\-force\fR flags is not specified.  If the \fB\-force\fR
 option is specified on a directory, Tcl will attempt both to change
-permissions and move the current directory 'pwd' out of the given path
-if that is necessary to allow the deletion to proceed.  Arguments are
-processed in the order specified, halting at the first error, if any.
+permissions and move the current directory
+.QW pwd
+out of the given path if that is necessary to allow the deletion to
+proceed.  Arguments are processed in the order specified, halting at
+the first error, if any.
 A \fB\-\|\-\fR marks the end of switches; the argument following the
 \fB\-\|\-\fR will be treated as a \fIpathname\fR even if it starts with
 a \fB\-\fR.
@@ -119,9 +131,10 @@ a \fB\-\fR.
 \fBfile dirname \fIname\fR
 Returns a name comprised of all of the path components in \fIname\fR
 excluding the last element.  If \fIname\fR is a relative file name and
-only contains one path element, then returns ``\fB.\fR''.
-If \fIname\fR refers to a root directory, then the
-root directory is returned.  For example,
+only contains one path element, then returns
+.QW \fB.\fR .
+If \fIname\fR refers to a root directory, then the root directory is
+returned.  For example,
 .RS
 .CS
 \fBfile dirname c:/\fR
@@ -182,36 +195,50 @@ is always canonical for the current platform: \fB/\fR for Unix and
 Windows.
 .RE
 .TP
-\fBfile link ?\fI-linktype\fR? \fIlinkName\fR ?\fItarget\fR?
+\fBfile link ?\fI\-linktype\fR? \fIlinkName\fR ?\fItarget\fR?
 .
 If only one argument is given, that argument is assumed to be
 \fIlinkName\fR, and this command returns the value of the link given by
 \fIlinkName\fR (i.e. the name of the file it points to).  If
-\fIlinkName\fR isn't a link or its value cannot be read (as, for example,
+\fIlinkName\fR is not a link or its value cannot be read (as, for example,
 seems to be the case with hard links, which look just like ordinary
 files), then an error is returned.
-.
+.RS
+.PP
 If 2 arguments are given, then these are assumed to be \fIlinkName\fR
 and \fItarget\fR. If \fIlinkName\fR already exists, or if \fItarget\fR
-doesn't exist, an error will be returned.  Otherwise, Tcl creates a new
-link called \fIlinkName\fR which points to the existing filesystem object
-at \fItarget\fR, where the type of the link is platform-specific (on Unix
-a symbolic link will be the default).  This is useful for the case where
-the user wishes to create a link in a cross-platform way, and doesn't
-care what type of link is created.
-.
+does not exist, an error will be returned.  Otherwise, Tcl creates a new
+link called \fIlinkName\fR which points to the existing filesystem
+object at \fItarget\fR (which is also the returned value), where the
+type of the link is platform-specific (on Unix a symbolic link will be
+the default).  This is useful for the case where the user wishes to
+create a link in a cross-platform way, and does not care what type of
+link is created.
+.PP
 If the user wishes to make a link of a specific type only, (and signal an
 error if for some reason that is not possible), then the optional
-\fI-linktype\fR argument should be given.  Accepted values for
-\fI-linktype\fR are "-symbolic" and "-hard".
-.
-When creating links on filesystems that either do not support any links,
-or do not support the specific type requested, an error message will be
-returned.  In particular Windows 95, 98 and ME do not support any links
-at present, but most Unix platforms support both symbolic and hard links
-(the latter for files only), MacOS supports symbolic links and Windows
-NT/2000/XP (on NTFS drives) support symbolic directory links and hard
-file links.
+\fI\-linktype\fR argument should be given.  Accepted values for
+\fI\-linktype\fR are
+.QW \-symbolic
+and
+.QW \-hard .
+.PP
+On Unix, symbolic links can be made to relative paths, and those paths
+must be relative to the actual \fIlinkName\fR's location (not to the
+cwd), but on all other platforms where relative links are not supported,
+target paths will always be converted to absolute, normalized form
+before the link is created (and therefore relative paths are interpreted
+as relative to the cwd).  Furthermore,
+.QW ~user
+paths are always expanded
+to absolute form.  When creating links on filesystems that either do not
+support any links, or do not support the specific type requested, an
+error message will be returned.  In particular Windows 95, 98 and ME do
+not support any links at present, but most Unix platforms support both
+symbolic and hard links (the latter for files only) and Windows
+NT/2000/XP (on NTFS drives) support symbolic
+directory links and hard file links.
+.RE
 .TP
 \fBfile lstat \fIname varName\fR
 .
@@ -219,7 +246,7 @@ Same as \fBstat\fR option (see below) except uses the \fIlstat\fR
 kernel call instead of \fIstat\fR.  This means that if \fIname\fR
 refers to a symbolic link the information returned in \fIvarName\fR
 is for the link rather than the file it refers to.  On systems that
-don't support symbolic links this option behaves exactly the same
+do not support symbolic links this option behaves exactly the same
 as the \fBstat\fR option.
 .TP
 \fBfile mkdir \fIdir\fR ?\fIdir\fR ...?
@@ -237,32 +264,35 @@ Returns a decimal string giving the time at which file \fIname\fR was last
 modified.  If \fItime\fR is specified, it is a modification time to set for
 the file (equivalent to Unix \fBtouch\fR).  The time is measured in the
 standard POSIX fashion as seconds from a fixed starting time (often January
-1, 1970).  If the file doesn't exist or its modified time cannot be queried
+1, 1970).  If the file does not exist or its modified time cannot be queried
 or set then an error is generated.
 .TP
 \fBfile nativename \fIname\fR
 .
 Returns the platform-specific name of the file. This is useful if the
-filename is needed to pass to a platform-specific call, such as exec
-under Windows.
+filename is needed to pass to a platform-specific call, such as to a
+subprocess via \fBexec\fR under Windows (see \fBEXAMPLES\fR below).
 .TP
 \fBfile normalize \fIname\fR
 .
-.RS
 Returns a unique normalized path representation for the file-system
 object (file, directory, link, etc), whose string value can be used as a
 unique identifier for it.  A normalized path is an absolute path which has
-all '../', './' removed.  Also it is one which is in the ``standard''
-format for the native platform.  On MacOS, Unix, this means the segments
+all
+.QW ../
+and
+.QW ./
+removed.  Also it is one which is in the
+.QW standard
+format for the native platform.  On Unix, this means the segments
 leading up to the path must be free of symbolic links/aliases (but the
 very last path component may be a symbolic link), and on Windows it also
 means we want the long form with that form's case-dependence (which
 gives us a unique, case-dependent path).  The one exception concerning the
 last link in the path is necessary, because Tcl or the user may wish to
-operate on the actual symbolic link itself (for example 'file delete', 'file
-rename', 'file copy' are defined to operate on symbolic links, not on the
-things that they point to).
-.RE
+operate on the actual symbolic link itself (for example \fBfile delete\fR,
+\fBfile rename\fR, \fBfile copy\fR are defined to operate on symbolic
+links, not on the things that they point to).
 .TP
 \fBfile owned \fIname\fR 
 .
@@ -271,13 +301,13 @@ otherwise.
 .TP
 \fBfile pathtype \fIname\fR
 .
-Returns one of \fBabsolute\fR, \fBrelative\fR, \fBvolumerelative\fR.  If
-\fIname\fR refers to a specific file on a specific volume, the path type
-will be \fBabsolute\fR.  If \fIname\fR refers to a file relative to the
-current working directory, then the path type will be \fBrelative\fR.  If
-\fIname\fR refers to a file relative to the current working directory on
-a specified volume, or to a specific file on the current working volume, then
-the path type is \fBvolumerelative\fR.
+Returns one of \fBabsolute\fR, \fBrelative\fR, \fBvolumerelative\fR. If
+\fIname\fR refers to a specific file on a specific volume, the path type will
+be \fBabsolute\fR. If \fIname\fR refers to a file relative to the current
+working directory, then the path type will be \fBrelative\fR. If \fIname\fR
+refers to a file relative to the current working directory on a specified
+volume, or to a specific file on the current working volume, then the path
+type is \fBvolumerelative\fR.
 .TP
 \fBfile readable \fIname\fR
 .
@@ -287,14 +317,14 @@ Returns \fB1\fR if file \fIname\fR is readable by the current user,
 \fBfile readlink \fIname\fR
 .
 Returns the value of the symbolic link given by \fIname\fR (i.e. the name
-of the file it points to).  If \fIname\fR isn't a symbolic link or its
-value cannot be read, then an error is returned.  On systems that don't
+of the file it points to).  If \fIname\fR is not a symbolic link or its
+value cannot be read, then an error is returned.  On systems that do not
 support symbolic links this option is undefined.
 .TP
 \fBfile rename \fR?\fB\-force\fR? ?\fB\-\|\-\fR? \fIsource\fR \fItarget\fR
 .TP
 \fBfile rename \fR?\fB\-force\fR? ?\fB\-\|\-\fR? \fIsource\fR ?\fIsource\fR ...? \fItargetDir\fR
-.RS
+.
 The first form takes the file or directory specified by pathname
 \fIsource\fR and renames it to \fItarget\fR, moving the file if the
 pathname \fItarget\fR specifies a name in a different directory.  If
@@ -309,13 +339,14 @@ result in errors.  Arguments are processed in the order specified,
 halting at the first error, if any.  A \fB\-\|\-\fR marks the end of
 switches; the argument following the \fB\-\|\-\fR will be treated as a
 \fIsource\fR even if it starts with a \fB\-\fR.
-.RE
 .TP
 \fBfile rootname \fIname\fR
 .
 Returns all of the characters in \fIname\fR up to but not including the
-last ``.'' character in the last component of name.  If the last
-component of \fIname\fR doesn't contain a dot, then returns \fIname\fR.
+last
+.QW .
+character in the last component of name.  If the last
+component of \fIname\fR does not contain a dot, then returns \fIname\fR.
 .TP
 \fBfile separator\fR ?\fIname\fR?
 .
@@ -328,7 +359,7 @@ is generated.
 \fBfile size \fIname\fR
 .
 Returns a decimal string giving the size of file \fIname\fR in bytes.  If
-the file doesn't exist or its size cannot be queried then an error is
+the file does not exist or its size cannot be queried then an error is
 generated.
 .TP
 \fBfile split \fIname\fR
@@ -336,7 +367,7 @@ generated.
 Returns a list whose elements are the path components in \fIname\fR.  The
 first element of the list will have the same path type as \fIname\fR.
 All other elements will be relative.  Path separators will be discarded
-unless they are needed ensure that an element is unambiguously relative.
+unless they are needed to ensure that an element is unambiguously relative.
 For example, under Unix
 .RS
 .CS
@@ -363,24 +394,32 @@ empty string.
 .TP
 \fBfile system \fIname\fR
 .
-Returns a list of two elements, the first of which is the name of the
-filesystem to use for the file, and the second an arbitrary string
-representing the filesystem-specific nature or type of the location
-within that filesystem.  If a filesystem only supports one type of file,
-the second element may be null.  For example the native files have a
-first element 'native', and a second element which is a platform-specific
-type name for the file's system (e.g. 'NTFS', 'FAT', etc), or possibly
-the empty string if no further information is available or if this
-is not implemented.  A generic virtual file system might return the
-list 'vfs ftp' to represent a file on a remote ftp site mounted as a
-virtual filesystem through an extension called 'vfs'.  If the file does
-not belong to any filesystem, an error is generated.
+Returns a list of one or two elements, the first of which is the name of
+the filesystem to use for the file, and the second, if given, an
+arbitrary string representing the filesystem-specific nature or type of
+the location within that filesystem.  If a filesystem only supports one
+type of file, the second element may not be supplied.  For example the
+native files have a first element
+.QW native ,
+and a second element which when given is a platform-specific type name
+for the file's system (e.g.
+.QW NTFS ,
+.QW FAT ,
+on Windows).  A generic virtual file system might return
+the list
+.QW "vfs ftp"
+to represent a file on a remote ftp site mounted as a
+virtual filesystem through an extension called
+.QW vfs .
+If the file does not belong to any filesystem, an error is generated.
 .TP
 \fBfile tail \fIname\fR
 .
-Returns all of the characters in \fIname\fR after the last directory
-separator.  If \fIname\fR contains no separators then returns
-\fIname\fR.
+Returns all of the characters in the last filesystem component of
+\fIname\fR.  Any trailing directory separator in \fIname\fR is ignored.
+If \fIname\fR contains no separators then returns \fIname\fR.  So, 
+\fBfile tail a/b\fR, \fBfile tail a/b/\fR and \fBfile tail b\fR all
+return \fBb\fR.
 .TP
 \fBfile type \fIname\fR
 .
@@ -391,10 +430,15 @@ Returns a string giving the type of file \fIname\fR, which will be one of
 \fBfile volumes\fR
 . 
 Returns the absolute paths to the volumes mounted on the system, as a
-proper Tcl list.  On UNIX, the
-command will always return "/", since all filesystems are locally mounted.
+proper Tcl list.  Without any virtual filesystems mounted as root
+volumes, on UNIX, the command will always return
+.QW / ,
+since all filesystems are locally mounted.
 On Windows, it will return a list of the available local drives
-(e.g. {a:/ c:/}).
+(e.g.
+.QW "a:/ c:/" ).
+If any virtual filesystem has mounted additional
+volumes, they will be in the returned list.
 .TP
 \fBfile writable \fIname\fR
 .
@@ -421,7 +465,7 @@ proc findMatchingCFiles {dir} {
          set ext .o
       }
    }
-   foreach file [glob -nocomplain -directory $dir *.c] {
+   foreach file [glob \-nocomplain \-directory $dir *.c] {
       set objectFile [\fBfile tail\fR [\fBfile rootname\fR $file]]$ext
       if {[\fBfile exists\fR $objectFile]} {
          lappend files $file
@@ -441,12 +485,19 @@ if {![\fBfile isdirectory\fR [\fBfile dirname\fR $newName]]} {
    \fBfile mkdir\fR [\fBfile dirname\fR $newName]
 }
 \fBfile rename\fR $oldName $newName
-\fBfile link\fR -symbolic $oldName $newName
+\fBfile link\fR \-symbolic $oldName $newName
+.CE
+.PP
+On Windows, a file can be
+.QW started
+easily enough (equivalent to double-clicking on it in the Explorer
+interface) but the name passed to the operating system must be in
+native format:
+.CS
+exec {*}[auto_execok start] {} [\fBfile nativename\fR ~/example.txt]
 .CE
-
 .SH "SEE ALSO"
 filename(n), open(n), close(n), eof(n), gets(n), tell(n), seek(n),
 fblocked(n), flush(n)
-
 .SH KEYWORDS
 attributes, copy files, delete files, directory, file, move files, name, rename files, stat
diff --git a/doc/fileevent.n b/doc/fileevent.n
index 99fe43a..eb555f5 100644
--- a/doc/fileevent.n
+++ b/doc/fileevent.n
@@ -28,17 +28,17 @@ interact with the user while waiting for the data to arrive.  If an
 application invokes \fBgets\fR or \fBread\fR on a blocking channel when
 there is no input data available, the process will block; until the input
 data arrives, it will not be able to service other events, so it will
-appear to the user to ``freeze up''.  With \fBfileevent\fR, the process can
+appear to the user to
+.QW "freeze up" .
+With \fBfileevent\fR, the process can
 tell when data is present and only invoke \fBgets\fR or \fBread\fR when
-they won't block.
+they will not block.
 .PP
-.VS
 The \fIchannelId\fR argument to \fBfileevent\fR refers to an open
 channel such as a Tcl standard channel (\fBstdin\fR, \fBstdout\fR,
 or \fBstderr\fR), the return value from an invocation of \fBopen\fR
 or \fBsocket\fR, or the result of a channel creation command provided
 by a Tcl extension.
-.VE
 .PP
 If the \fIscript\fR argument is specified, then \fBfileevent\fR
 creates a new event handler:  \fIscript\fR will be evaluated
@@ -94,7 +94,7 @@ The script for a file event is executed at global level (outside the
 context of any Tcl procedure) in the interpreter in which the
 \fBfileevent\fR command was invoked.
 If an error occurs while executing the script then the
-\fBbgerror\fR mechanism is used to report the error.
+command registered with \fBinterp bgerror\fR is used to report the error.
 In addition, the file event handler is deleted if it ever returns
 an error;  this is done in order to prevent infinite loops due to
 buggy handlers.
@@ -117,7 +117,7 @@ proc GetData {chan} {
 by Mark Diekhans.
 
 .SH "SEE ALSO"
-bgerror(n), fconfigure(n), gets(n), puts(n), read(n), Tcl_StandardChannels(3)
+fconfigure(n), gets(n), interp(n), puts(n), read(n), Tcl_StandardChannels(3)
 
 .SH KEYWORDS
 asynchronous I/O, blocking, channel, event handler, nonblocking, readable,
diff --git a/doc/filename.n b/doc/filename.n
index 92d0eb7..1fe22f0 100644
--- a/doc/filename.n
+++ b/doc/filename.n
@@ -23,7 +23,6 @@ to be portable should not assume a particular form for file names.
 Instead, portable scripts must use the \fBfile split\fR and \fBfile
 join\fR commands to manipulate file names (see the \fBfile\fR manual
 entry for more details).
-
 .SH "PATH TYPES"
 .PP
 File names are grouped into three general types based on the starting point
@@ -36,21 +35,26 @@ qualified, either giving the path relative to the root directory on the
 current volume, or relative to the current directory of the specified
 volume.  The \fBfile pathtype\fR command can be used to determine the
 type of a given path.
-
 .SH "PATH SYNTAX"
 .PP
 The rules for native names depend on the value reported in the Tcl
 array element \fBtcl_platform(platform)\fR:
 .TP 10
-\fBunix\fR
-On Unix platforms, Tcl uses path names where the components are
-separated by slashes.  Path names may be relative or absolute, and
-file names may contain any character other than slash.  The file names
-\fB\&.\fR and \fB\&..\fR are special and refer to the current directory
-and the parent of the current directory respectively.  Multiple
-adjacent slash characters are interpreted as a single separator.
-The following examples illustrate various forms of path names:
+\fBUnix\fR
+On Unix and Apple MacOS X platforms, Tcl uses path names where the
+components are separated by slashes.  Path names may be relative or
+absolute, and file names may contain any character other than slash.
+The file names \fB\&.\fR and \fB\&..\fR are special and refer to the
+current directory and the parent of the current directory respectively.
+Multiple adjacent slash characters are interpreted as a single
+separator.  Any number of trailing slash characters at the end of a
+path are simply ignored, so the paths \fBfoo\fR, \fBfoo/\fR and
+\fBfoo//\fR are all identical, and in particular \fBfoo/\fR does not
+necessarily mean a directory is being referred.
 .RS
+.PP
+The following examples illustrate various forms of path
+names:
 .TP 15
 \fB/\fR
 Absolute path to the root directory.
@@ -74,7 +78,7 @@ Relative path to the file \fBfoo\fR in the directory above the current
 directory. 
 .RE
 .TP
-\fBwindows\fR
+\fBWindows\fR
 On Microsoft Windows platforms, Tcl supports both drive-relative and UNC
 style names.  Both \fB/\fR and \fB\e\fR may be used as directory separators
 in either type of name.  Drive-relative names consist of an optional drive
@@ -114,37 +118,39 @@ Volume-relative path to a file \fBfoo\fR in the root directory of the current
 volume.  This is not a valid UNC path, so the assumption is that the
 extra backslashes are superfluous.
 .RE
-
 .SH "TILDE SUBSTITUTION"
 .PP
 In addition to the file name rules described above, Tcl also supports
-\fIcsh\fR-style tilde substitution.  If a file name starts with a
-tilde, then the file name will be interpreted as if the first element
-is replaced with the location of the home directory for the given
-user.  If the tilde is followed immediately by a separator, then the
-\fB$HOME\fR environment variable is substituted.  Otherwise the
-characters between the tilde and the next separator are taken as a
-user name, which is used to retrieve the user's home directory for
-substitution.
+\fIcsh\fR-style tilde substitution.  If a file name starts with a tilde,
+then the file name will be interpreted as if the first element is
+replaced with the location of the home directory for the given user.  If
+the tilde is followed immediately by a separator, then the \fB$HOME\fR
+environment variable is substituted.  Otherwise the characters between
+the tilde and the next separator are taken as a user name, which is used
+to retrieve the user's home directory for substitution.  This works on
+Unix, MacOS X and Windows (except very old releases).
 .PP
-The Windows platform does not support tilde substitution
-when a user name follows the tilde.  On these platforms, attempts to
-use a tilde followed by a user name will generate an error that the
-user does not exist when Tcl attempts to interpret that part of the
-path or otherwise access the file.  The behaviour of these paths
-when not trying to interpret them is the same as on Unix.  File
-names that have a tilde without a user name will be correctly
-substituted using the \fB$HOME\fR environment variable, just like 
-for Unix.
-
+Old Windows platforms do not support tilde substitution when a user name
+follows the tilde.  On these platforms, attempts to use a tilde followed
+by a user name will generate an error that the user does not exist when
+Tcl attempts to interpret that part of the path or otherwise access the
+file.  The behaviour of these paths when not trying to interpret them is
+the same as on Unix.  File names that have a tilde without a user name
+will be correctly substituted using the \fB$HOME\fR environment
+variable, just like for Unix.
 .SH "PORTABILITY ISSUES"
 .PP
 Not all file systems are case sensitive, so scripts should avoid code
 that depends on the case of characters in a file name.  In addition,
 the character sets allowed on different devices may differ, so scripts
 should choose file names that do not contain special characters like:
-\fB<>:"/\e|\fR.  The safest approach is to use names consisting of
-alphanumeric characters only.  Also Windows 3.1 only supports file
+\fB<>:?"/\e|\fR.
+'\""\" reset emacs highlighting
+The safest approach is to use names consisting of
+alphanumeric characters only.  Care should be taken with filenames
+which contain spaces (common on Windows systems) and
+filenames where the backslash is the directory separator (Windows
+native path names).  Also Windows 3.1 only supports file
 names with a root of no more than 8 characters and an extension of no
 more than 3 characters.
 .PP
@@ -152,16 +158,21 @@ On Windows platforms there are file and path length restrictions.
 Complete paths or filenames longer than about 260 characters will lead
 to errors in most file operations.
 .PP
-Another Windows peculiarity is that any number of trailing dots '.'  in
-filenames are totally ignored, so, for example, attempts to create a
-file or directory with a name "foo." will result in the creation of a
-file/directory with name "foo".  This fact is reflected in the
-results of 'file normalize'.  Furthermore, a file name consisting only
-of dots '.........' or dots with trailing characters '.....abc' is
-illegal.
+Another Windows peculiarity is that any number of trailing dots
+.QW .
+in filenames are totally ignored, so, for example, attempts to create a
+file or directory with a name
+.QW foo.
+will result in the creation of a file/directory with name
+.QW foo .
+This fact is reflected in the results of \fBfile normalize\fR.
+Furthermore, a file name consisting only of dots
+.QW .........
+or dots with trailing characters
+.QW .....abc
+is illegal.
+.SH "SEE ALSO"
+file(n), glob(n)
 .SH KEYWORDS
 current directory, absolute file name, relative file name,
 volume-relative file name, portability
-
-.SH "SEE ALSO"
-file(n), glob(n)
diff --git a/doc/flush.n b/doc/flush.n
index a288141..1c79ea0 100644
--- a/doc/flush.n
+++ b/doc/flush.n
@@ -19,13 +19,11 @@ flush \- Flush buffered output for a channel
 .PP
 Flushes any output that has been buffered for \fIchannelId\fR.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as a
 Tcl standard channel (\fBstdout\fR or \fBstderr\fR), the return
 value from an invocation of \fBopen\fR or \fBsocket\fR, or the result
 of a channel creation command provided by a Tcl extension.  The
 channel must have been opened for writing.
-.VE
 .PP
 If the channel is in blocking mode the command does not return until all the
 buffered output has been flushed to the channel. If the channel is in
diff --git a/doc/for.n b/doc/for.n
index 14755cb..033903f 100644
--- a/doc/for.n
+++ b/doc/for.n
@@ -10,7 +10,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-for \- ``For'' loop
+for \- 'For' loop
 .SH SYNOPSIS
 \fBfor \fIstart test next body\fR
 .BE
diff --git a/doc/foreach.n b/doc/foreach.n
index be7a6fb..654c0cf 100644
--- a/doc/foreach.n
+++ b/doc/foreach.n
@@ -35,9 +35,9 @@ In the general case there can be more than one value list
 and each value list can be associated with a list of loop variables
 (e.g., \fIvarlist1\fR and \fIvarlist2\fR).
 During each iteration of the loop
-the variables of each \fIvarlist\fP are assigned
-consecutive values from the corresponding \fIlist\fP.
-Values in each \fIlist\fP are used in order from first to last,
+the variables of each \fIvarlist\fR are assigned
+consecutive values from the corresponding \fIlist\fR.
+Values in each \fIlist\fR are used in order from first to last,
 and each value is used exactly once.
 The total number of loop iterations is large enough to use
 up all the values from all the value lists.
@@ -49,37 +49,48 @@ The \fBbreak\fR and \fBcontinue\fR statements may be
 invoked inside \fIbody\fR, with the same effect as in the \fBfor\fR
 command.  \fBForeach\fR returns an empty string.
 .SH EXAMPLES
+This loop prints every value in a list together with the square and
+cube of the value:
+.CS
+'\" Maintainers: notice the tab hacking below!
+.ta 3i
+set values {1 3 5 7 2 4 6 8}	;# Odd numbers first, for fun!
+puts "Value\etSquare\etCube"	;# Neat-looking header
+\fBforeach\fR x $values {	;# Now loop and print...
+    puts " $x\et [expr {$x**2}]\et [expr {$x**3}]"
+}
+.CE
 .PP
 The following loop uses i and j as loop variables to iterate over
 pairs of elements of a single list.
-.DS
+.CS
 set x {}
 \fBforeach\fR {i j} {a b c d e f} {
     lappend x $j $i
 }
 # The value of x is "b a d c f e"
 # There are 3 iterations of the loop.
-.DE
+.CE
 .PP
 The next loop uses i and j to iterate over two lists in parallel.
-.DS
+.CS
 set x {}
 \fBforeach\fR i {a b c} j {d e f g} {
     lappend x $i $j
 }
 # The value of x is "a d b e c f {} g"
 # There are 4 iterations of the loop.
-.DE
+.CE
 .PP
 The two forms are combined in the following example.
-.DS
+.CS
 set x {}
 \fBforeach\fR i {a b c} {j k} {d e f g} {
     lappend x $i $j $k
 }
 # The value of x is "a d e b f g c {} {}"
 # There are 3 iterations of the loop.
-.DE
+.CE
 
 .SH "SEE ALSO"
 for(n), while(n), break(n), continue(n)
diff --git a/doc/format.n b/doc/format.n
index 0dea667..f842f16 100644
--- a/doc/format.n
+++ b/doc/format.n
@@ -17,9 +17,8 @@ format \- Format a string in the style of sprintf
 
 .SH INTRODUCTION
 .PP
-This command generates a formatted string in the same way as the
-ANSI C \fBsprintf\fR procedure (it uses \fBsprintf\fR in its
-implementation).
+This command generates a formatted string in a fashion similar to the
+ANSI C \fBsprintf\fR procedure.
 \fIFormatString\fR indicates how to format the result, using
 \fB%\fR conversion specifiers as in \fBsprintf\fR, and the additional
 arguments, if any, provide values to be substituted into the result.
@@ -42,15 +41,15 @@ of all of the conversion specifiers in \fIformatString\fR.
 .PP
 Each conversion specifier may contain up to six different parts:
 an XPG3 position specifier,
-a set of flags, a minimum field width, a precision, a length modifier,
+a set of flags, a minimum field width, a precision, a size modifier,
 and a conversion character.
 Any of these fields may be omitted except for the conversion character.
 The fields that are present must appear in the order given above.
 The paragraphs below discuss each of these fields in turn.
 .PP
 If the \fB%\fR is followed by a decimal number and a \fB$\fR, as in
-``\fB%2$d\fR'', then the value to convert is not taken from the
-next sequential argument.
+.QW \fB%2$d\fR ,
+then the value to convert is not taken from the next sequential argument.
 Instead, it is taken from the argument indicated by the number,
 where 1 corresponds to the first \fIarg\fR.
 If the conversion specifier requires multiple arguments because
@@ -74,8 +73,8 @@ Specifies that a number should always be printed with a sign,
 even if positive.
 .TP 10
 \fIspace\fR
-Specifies that a space should be added to the beginning of the 
-number if the first character isn't a sign.
+Specifies that a space should be added to the beginning of the
+number if the first character is not a sign.
 .TP 10
 \fB0\fR
 Specifies that the number should be padded on the left with 
@@ -92,7 +91,7 @@ has a decimal point.
 For \fBg\fR and \fBG\fR conversions it specifies that 
 trailing zeroes should not be removed.
 .PP
-The third portion of a conversion specifier is a number giving a
+The third portion of a conversion specifier is a decimal number giving a
 minimum field width for this conversion.
 It is typically used to make columns line up in tabular printouts.
 If the converted argument contains fewer characters than the
@@ -104,7 +103,7 @@ may be used to specify padding with zeroes on the left or with
 spaces on the right, respectively.
 If the minimum field width is specified as \fB*\fR rather than
 a number, then the next argument to the \fBformat\fR command
-determines the minimum field width; it must be a numeric string.
+determines the minimum field width; it must be an integer value.
 .PP
 The fourth portion of a conversion specifier is a precision,
 which consists of a period followed by a number.
@@ -123,17 +122,19 @@ If the precision is specified with \fB*\fR rather than a number
 then the next argument to the \fBformat\fR command determines the precision;
 it must be a numeric string.
 .PP
-The fifth part of a conversion specifier is a length modifier,
-which must be \fBh\fR or \fBl\fR.
-If it is \fBh\fR it specifies that the numeric value should be
-truncated to a 16-bit value before converting.
-This option is rarely useful.
-.VS 8.4
-If it is \fBl\fR it specifies that the numeric value should be (at
-least) a 64-bit value.  If neither \fBh\fR nor \fBl\fR are present,
-numeric values are interpreted as being values of the width of the
-native machine word, as described by \fBtcl_platform(wordSize)\fR.
-.VE
+The fifth part of a conversion specifier is a size modifier,
+which must be \fBll\fR, \fBh\fR, or \fBl\fR.
+If it is \fBll\fR it specifies that an integer value is taken
+without truncation for conversion to a formatted substring.
+If it is \fBh\fR it specifies that an integer value is
+truncated to a 16-bit range before converting.  This option is rarely useful.
+If it is \fBl\fR it specifies that the integer value is 
+truncated to the same range as that produced by the \fBwide()\fR
+function of the \fBexpr\fR command (at least a 64-bit range).
+If neither \fBh\fR nor \fBl\fR are present, the integer value is
+truncated to the same range as that produced by the \fBint()\fR
+function of the \fBexpr\fR command (at least a 32-bit range, but
+determined by the value of \fBtcl_platform(wordSize)\fR).
 .PP
 The last thing in a conversion specifier is an alphabetic character
 that determines what kind of conversion to perform.
@@ -146,33 +147,32 @@ Convert integer to signed decimal string.
 Convert integer to unsigned decimal string.
 .TP 10
 \fBi\fR
-Convert integer to signed decimal string;  the integer may either be
-in decimal, in octal (with a leading \fB0\fR) or in hexadecimal
-(with a leading \fB0x\fR).
+Convert integer to signed decimal string (equivalent to \fBd\fR).
 .TP 10
 \fBo\fR
 Convert integer to unsigned octal string.
 .TP 10
 \fBx\fR or \fBX\fR
 Convert integer to unsigned hexadecimal string, using digits
-``0123456789abcdef'' for \fBx\fR and ``0123456789ABCDEF'' for \fBX\fR).
-.VS
+.QW 0123456789abcdef
+for \fBx\fR and
+.QW 0123456789ABCDEF
+for \fBX\fR).
 .TP 10
 \fBc\fR
 Convert integer to the Unicode character it represents.
-.VE
 .TP 10
 \fBs\fR
 No conversion; just insert string.
 .TP 10
 \fBf\fR
-Convert floating-point number to signed decimal string of 
+Convert number to signed decimal string of 
 the form \fIxx.yyy\fR, where the number of \fIy\fR's is determined by 
 the precision (default: 6).
 If the precision is 0 then no decimal point is output.
 .TP 10
-\fBe\fR or \fBe\fR
-Convert floating-point number to scientific notation in the 
+\fBe\fR or \fBE\fR
+Convert number to scientific notation in the 
 form \fIx.yyy\fBe\(+-\fIzz\fR, where the number of \fIy\fR's is determined 
 by the precision (default: 6).
 If the precision is 0 then no decimal point is output.
@@ -181,40 +181,34 @@ printed instead of \fBe\fR.
 .TP 10
 \fBg\fR or \fBG\fR
 If the exponent is less than \-4 or greater than or equal to the 
-precision, then convert floating-point number as for \fB%e\fR or 
+precision, then convert number as for \fB%e\fR or 
 \fB%E\fR.
 Otherwise convert as for \fB%f\fR.
 Trailing zeroes and a trailing decimal point are omitted.
 .TP 10
 \fB%\fR
 No conversion: just insert \fB%\fR.
-.LP
-For the numerical conversions the argument being converted must
-be an integer or floating-point string; format converts the argument
-to binary and then converts it back to a string according to 
-the conversion specifier.
 .SH "DIFFERENCES FROM ANSI SPRINTF"
 .PP
 The behavior of the format command is the same as the
 ANSI C \fBsprintf\fR procedure except for the following
 differences:
 .IP [1]
-\fB%p\fR and \fB%n\fR specifiers are not currently supported.
+\fB%p\fR and \fB%n\fR specifiers are not supported.
 .IP [2]
-For \fB%c\fR conversions the argument must be a decimal string,
+For \fB%c\fR conversions the argument must be an integer value,
 which will then be converted to the corresponding character value.
 .IP [3]
-The \fBl\fR modifier
-.VS 8.4
-is ignored for real values and on 64-bit platforms, which are always
-converted as if the \fBl\fR modifier were present (i.e. the types
-\fBdouble\fR and \fBlong\fR are used for the internal representation
-of real and integer values, respectively).
-.VE 8.4
-If the \fBh\fR modifier is specified then integer values are truncated
-to \fBshort\fR before conversion.  Both \fBh\fR and \fBl\fR modifiers
-are ignored on all other conversions.
+The size modifiers are ignored when formatting floating-point values.
+The \fBll\fR modifier has no \fBsprintf\fR counterpart.
 .SH EXAMPLES
+Convert the numeric value of a UNICODE character to the character
+itself:
+.CS
+set value 120
+set char [\fBformat\fR %c $value]
+.CE
+.PP
 Convert the output of \fBtime\fR into seconds to an accuracy of
 hundredths of a second:
 .CS
@@ -235,7 +229,7 @@ reordering the data values passed to \fBformat\fR:
 set fmt1 "Today, %d shares in %s were bought at $%.2f each"
 puts [\fBformat\fR $fmt1 123 "Global BigCorp" 19.37]
 
-set fmt2 "Bought %2\\$s equity ($%3$.2f x %1\\$d) today"
+set fmt2 "Bought %2\e$s equity ($%3$.2f x %1\e$d) today"
 puts [\fBformat\fR $fmt2 123 "Global BigCorp" 19.37]
 .CE
 .PP
@@ -261,9 +255,7 @@ for {set i 0} {$i<=20} {incr i} {
 # Finish off by printing the separator again
 puts $sep
 .CE
-
 .SH "SEE ALSO"
 scan(n), sprintf(3), string(n)
-
 .SH KEYWORDS
 conversion specifier, format, sprintf, string, substitution
diff --git a/doc/gets.n b/doc/gets.n
index d61d072..bed7e32 100644
--- a/doc/gets.n
+++ b/doc/gets.n
@@ -21,13 +21,11 @@ This command reads the next line from \fIchannelId\fR, returns everything
 in the line up to (but not including) the end-of-line character(s), and
 discards the end-of-line character(s).
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as the
 Tcl standard input channel (\fBstdin\fR), the return value from an
 invocation of \fBopen\fR or \fBsocket\fR, or the result of a channel
 creation command provided by a Tcl extension. The channel must have
 been opened for input.
-.VE
 .PP
 If \fIvarName\fR is omitted the line is returned as the result of the
 command.
diff --git a/doc/glob.n b/doc/glob.n
index 1a08c7a..c257983 100644
--- a/doc/glob.n
+++ b/doc/glob.n
@@ -17,14 +17,17 @@ glob \- Return names of files that match patterns
 
 .SH DESCRIPTION
 .PP
-This command performs file name ``globbing'' in a fashion similar to
+This command performs file name
+.QW globbing
+in a fashion similar to
 the csh shell.  It returns a list of the files whose names match any
-of the \fIpattern\fR arguments.
+of the \fIpattern\fR arguments.  No particular order is guaranteed
+in the list, so if a sorted list is required the caller should use 
+\fBlsort\fR.
 .LP
 If the initial arguments to \fBglob\fR start with \fB\-\fR then
 they are treated as switches.  The following switches are
 currently supported:
-.VS 8.3
 .TP
 \fB\-directory\fR \fIdirectory\fR
 Search for files which match the given patterns starting in the given
@@ -35,14 +38,13 @@ characters explicitly.  This option may not be used in conjunction with
 whose names may contain glob-sensitive characters.
 .TP
 \fB\-join\fR
-The remaining pattern arguments are treated as a single pattern
-obtained by joining the arguments with directory separators.
-.VE 8.3
+The remaining pattern arguments, after option processing, are treated
+as a single pattern obtained by joining the arguments with directory
+separators.
 .TP
 \fB\-nocomplain\fR
 Allows an empty list to be returned without error;  without this
 switch an error is returned if the result list would be empty.
-.VS 8.3
 .TP
 \fB\-path\fR \fIpathPrefix\fR
 Search for files with the given \fIpathPrefix\fR where the rest of the name
@@ -83,7 +85,13 @@ a directory will be returned if \fB\-types d\fR was specified.
 .PP
 The second form specifies types where all the types given must match.
 These are \fIr\fR, \fIw\fR, \fIx\fR as file permissions, and
-\fIreadonly\fR, \fIhidden\fR as special permission cases.  
+\fIreadonly\fR, \fIhidden\fR as special permission cases.  On the
+Macintosh, MacOS types and creators are also supported, where any item
+which is four characters long is assumed to be a MacOS type
+(e.g. \fBTEXT\fR).  Items which are of the form \fI{macintosh type XXXX}\fR
+or \fI{macintosh creator XXXX}\fR will match types or creators
+respectively.  Unrecognized types, or specifications of multiple MacOS
+types/creators will signal an error.
 .PP
 The two forms may be mixed, so \fB\-types {d f r w}\fR will find all
 regular files OR directories that have both read AND write permissions.
@@ -94,10 +102,10 @@ The following are equivalent:
 \fBglob */\fR
 .CE
 .RE
-except that the first case doesn't return the trailing ``/'' and
-is more platform independent.
+except that the first case doesn't return the trailing
+.QW /
+and is more platform independent.
 .RE
-.VE 8.3
 .TP
 \fB\-\|\-\fR
 Marks the end of switches.  The argument following this one will
@@ -123,20 +131,35 @@ Matches the character \fIx\fR.
 \fB{\fIa\fB,\fIb\fB,\fI...\fR}
 Matches any of the strings \fIa\fR, \fIb\fR, etc.
 .LP
-On Unix, as with csh, a ``.'' at the beginning of a file's name or just
-after a ``/'' must be matched explicitly or with a {} construct,
-unless the ``-types hidden'' flag is given (since ``.'' at the beginning 
-of a file's name indicates that it is hidden).  On other platforms,
-files beginning with a ``.'' are handled no differently to any others,
-except the special directories ``.'' and ``..'' which must be matched
-explicitly (this is to avoid a recursive pattern like ``glob -join * *
-* *'' from recursing up the directory hierarchy as well as down).
-In addition, all ``/'' characters must be matched explicitly.
+On Unix, as with csh, a
+.QW .
+at the beginning of a file's name or just after a
+.QW /
+must be matched explicitly or with a {} construct, unless the
+\fB\-types hidden\fR flag is given (since
+.QW .
+at the beginning of a file's name indicates that it is hidden).  On
+other platforms, files beginning with a
+.QW .
+are handled no differently to any others, except the special directories
+.QW .
+and
+.QW ..
+which must be matched explicitly (this is to avoid a recursive pattern like
+.QW "glob -join * * * *"
+from recursing up the directory hierarchy as well as down). In addition, all
+.QW /
+characters must be matched explicitly.
 .LP
-If the first character in a \fIpattern\fR is ``~'' then it refers
-to the home directory for the user whose name follows the ``~''.
-If the ``~'' is followed immediately by ``/'' then the value of
-the HOME environment variable is used.
+If the first character in a \fIpattern\fR is
+.QW ~
+then it refers to the home directory for the user whose name follows the
+.QW ~ .
+If the
+.QW ~
+is followed immediately by
+.QW /
+then the value of the HOME environment variable is used.
 .LP
 The \fBglob\fR command differs from csh globbing in two ways.
 First, it does not sort its result list (use the \fBlsort\fR
@@ -146,29 +169,32 @@ exist;  in csh no check for existence is made unless a pattern
 contains a ?, *, or [] construct.
 .LP
 When the \fBglob\fR command returns relative paths whose filenames
-start with a tilde ``~'' (for example through \fBglob *\fR or 
-\fBglob -tails\fR, the returned list will not quote the tilde with
-``./''.  This means care must be taken if those names are later to
+start with a tilde
+.QW ~
+(for example through \fBglob *\fR or \fBglob -tails\fR, the returned
+list will not quote the tilde with
+.QW ./ .
+This means care must be taken if those names are later to
 be used with \fBfile join\fR, to avoid them being interpreted as
 absolute paths pointing to a given user's home directory.
 .SH "PORTABILITY ISSUES"
 .PP
-Unlike other Tcl commands that will accept both network and native
-style names (see the \fBfilename\fR manual entry for details on how
-native and network names are specified), the \fBglob\fR command only
-accepts native names.  
-.TP
 \fBWindows\fR
 .
 For Windows UNC names, the servername and sharename components of the path
 may not contain ?, *, or [] constructs.  On Windows NT, if \fIpattern\fR is
-of the form ``\fB~\fIusername\fB@\fIdomain\fR'' it refers to the home
+of the form
+.QW \fB~\fIusername\fB@\fIdomain\fR ,
+it refers to the home
 directory of the user whose account information resides on the specified NT
 domain server.  Otherwise, user account information is obtained from
 the local computer.  On Windows 95 and 98, \fBglob\fR accepts patterns
-like ``.../'' and ``..../'' for successively higher up parent directories.
-
-.
+like
+.QW .../
+and
+.QW ..../
+for successively higher up parent directories.
+.PP
 Since the backslash character has a special meaning to the glob 
 command, glob patterns containing Windows style path separators need 
 special care. The pattern \fIC:\e\efoo\e\e*\fR is interpreted as 
@@ -195,7 +221,12 @@ Find all subdirectories of the current directory:
 \fBglob\fR \-type d *
 .CE
 .PP
-Find all files whose name contains an "a", a "b" or the sequence "cde":
+Find all files whose name contains an
+.QW a ,
+a
+.QW b
+or the sequence
+.QW cde :
 .CS
 \fBglob\fR \-type f *{a,b,cde}*
 .CE
diff --git a/doc/global.n b/doc/global.n
index b0e4389..c9d7a36 100644
--- a/doc/global.n
+++ b/doc/global.n
@@ -26,6 +26,10 @@ in the list returned by \fBinfo locals\fR).
 If \fIvarname\fR contains namespace qualifiers, the local variable's name is
 the unqualified name of the global variable, as determined by the
 \fBnamespace tail\fR command. 
+.PP
+\fIvarname\fR is always treated as the name of a variable, not an
+array element.  An error is returned if the name looks like an array element,
+such as \fBa(b)\fR.
 .SH EXAMPLES
 This procedure sets the namespace variable \fI::a::x\fR
 .CS
@@ -43,7 +47,7 @@ opened with \fBsocket\fR or as part of a counted HTTP response).
 .CS
 proc accum {string} {
     \fBglobal\fR accumulator
-    append accumulator $string \\n
+    append accumulator $string \en
 }
 .CE
 
diff --git a/doc/history.n b/doc/history.n
index 0ce7c4c..ba507b4 100644
--- a/doc/history.n
+++ b/doc/history.n
@@ -14,20 +14,20 @@ history \- Manipulate the history list
 .SH SYNOPSIS
 \fBhistory \fR?\fIoption\fR? ?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBhistory\fR command performs one of several operations related to
 recently-executed commands recorded in a history list.  Each of
-these recorded commands is referred to as an ``event''.  When
-specifying an event to the \fBhistory\fR command, the following
+these recorded commands is referred to as an
+.QW event .
+When specifying an event to the \fBhistory\fR command, the following
 forms may be used:
 .IP [1]
 A number:  if positive, it refers to the event with
 that number (all events are numbered starting at 1).  If the number
 is negative, it selects an event relative to the current event
 (\fB\-1\fR refers to the previous event, \fB\-2\fR to the one before that, and
-so on).  Event \fB0\fP refers to the current event.
+so on).  Event \fB0\fR refers to the current event.
 .IP [2]
 A string:  selects the most recent event that matches the string.
 An event is considered to match the string either if the string is
@@ -43,7 +43,7 @@ as \fBhistory info\fR, described below.
 \fBhistory add\fI command \fR?\fBexec\fR?
 Adds the \fIcommand\fR argument to the history list as a new event.  If
 \fBexec\fR is specified (or abbreviated) then the command is also
-executed and its result is returned.  If \fBexec\fR isn't specified
+executed and its result is returned.  If \fBexec\fR is not specified
 then an empty string is returned as result.
 .TP
 \fBhistory change\fI newValue\fR ?\fIevent\fR?
@@ -87,16 +87,16 @@ revision:  see below for details.
 .PP
 Pre-8.0 Tcl had a complex history revision mechanism.
 The current mechanism is more limited, and the old
-history operations \fBsubstitute\fP and \fBwords\fP have been removed.
-(As a consolation, the \fBclear\fP operation was added.)
+history operations \fBsubstitute\fR and \fBwords\fR have been removed.
+(As a consolation, the \fBclear\fR operation was added.)
 .PP
-The history option \fBredo\fR results in much simpler ``history revision''.
+The history option \fBredo\fR results in much simpler
+.QW "history revision" .
 When this option is invoked then the most recent event
 is modified to eliminate the history command and replace it with
 the result of the history command.
 If you want to redo an event without modifying history, then use
-the \fBevent\fP operation to retrieve some event,
-and the \fBadd\fP operation to add it to history and execute it.
-
+the \fBevent\fR operation to retrieve some event,
+and the \fBadd\fR operation to add it to history and execute it.
 .SH KEYWORDS
 event, history, record
diff --git a/doc/http.n b/doc/http.n
index a563b5d..24b5f6a 100644
--- a/doc/http.n
+++ b/doc/http.n
@@ -7,21 +7,22 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH "http" n 2.5 http "Tcl Bundled Packages"
+.TH "http" n 2.7 http "Tcl Bundled Packages"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-http \- Client-side implementation of the HTTP/1.0 protocol.
+http \- Client-side implementation of the HTTP/1.1 protocol
 .SH SYNOPSIS
-\fBpackage require http ?2.5?\fR
+\fBpackage require http ?2.7?\fR
+.\" See Also -useragent option documentation in body!
 .sp
 \fB::http::config \fI?options?\fR
 .sp
 \fB::http::geturl \fIurl ?options?\fR
 .sp
-\fB::http::formatQuery\fP \fIkey value\fP ?\fIkey value\fP ...?
+\fB::http::formatQuery\fR \fIkey value\fR ?\fIkey value\fR ...?
 .sp
-\fB::http::reset\fP \fItoken\fP ?\fIwhy\fP?
+\fB::http::reset\fR \fItoken\fR ?\fIwhy\fR?
 .sp
 \fB::http::wait \fItoken\fR
 .sp
@@ -45,12 +46,12 @@ http \- Client-side implementation of the HTTP/1.0 protocol.
 .sp
 \fB::http::unregister \fIproto\fR
 .BE
-
 .SH DESCRIPTION
 .PP
-The \fBhttp\fR package provides the client side of the HTTP/1.0
-protocol.  The package implements the GET, POST, and HEAD operations
-of HTTP/1.0.  It allows configuration of a proxy host to get through
+The \fBhttp\fR package provides the client side of the HTTP/1.1
+protocol, as defined in RFC 2616.
+The package implements the GET, POST, and HEAD operations
+of HTTP/1.1.  It allows configuration of a proxy host to get through
 firewalls.  The package is compatible with the \fBSafesock\fR security
 policy, so it can be used by untrusted applets to do URL fetching from
 a restricted set of hosts. This package can be extended to support
@@ -63,9 +64,9 @@ is performed.
 The return value of \fB::http::geturl\fR is a token for the transaction.
 The value is also the name of an array in the ::http namespace
 that contains state information about the transaction.  The elements
-of this array are described in the STATE ARRAY section.
+of this array are described in the \fBSTATE ARRAY\fR section.
 .PP
-If the \fB-command\fP option is specified, then
+If the \fB\-command\fR option is specified, then
 the HTTP operation is done in the background.
 \fB::http::geturl\fR returns immediately after generating the
 HTTP request and the callback is invoked
@@ -75,7 +76,7 @@ applications, the caller can use \fB::http::wait\fR after calling
 \fB::http::geturl\fR to start the event loop.
 .SH COMMANDS
 .TP
-\fB::http::config\fP ?\fIoptions\fR?
+\fB::http::config\fR ?\fIoptions\fR?
 The \fB::http::config\fR command is used to set and query the name of the
 proxy server and port, and the User-Agent name used in the HTTP
 requests.  If no options are specified, then the current configuration
@@ -85,20 +86,21 @@ that setting is returned.  Otherwise, the options should be a set of
 flags and values that define the configuration:
 .RS
 .TP
-\fB\-accept\fP \fImimetypes\fP
+\fB\-accept\fR \fImimetypes\fR
 The Accept header of the request.  The default is */*, which means that
 all types of documents are accepted.  Otherwise you can supply a 
 comma-separated list of mime type patterns that you are
-willing to receive.  For example, "image/gif, image/jpeg, text/*".
+willing to receive.  For example,
+.QW "image/gif, image/jpeg, text/*" .
 .TP
-\fB\-proxyhost\fP \fIhostname\fP
+\fB\-proxyhost\fR \fIhostname\fR
 The name of the proxy host, if any.  If this value is the
 empty string, the URL host is contacted directly.
 .TP
-\fB\-proxyport\fP \fInumber\fP
+\fB\-proxyport\fR \fInumber\fR
 The proxy port number.
 .TP
-\fB\-proxyfilter\fP \fIcommand\fP
+\fB\-proxyfilter\fR \fIcommand\fR
 The command is a callback that is made during
 \fB::http::geturl\fR
 to determine if a proxy is required for a given host.  One argument, a
@@ -109,7 +111,7 @@ an empty list.  The default filter returns the values of the
 \fB\-proxyhost\fR and \fB\-proxyport\fR settings if they are
 non-empty.
 .TP
-\fB\-urlencoding\fP \fIencoding\fP
+\fB\-urlencoding\fR \fIencoding\fR
 The \fIencoding\fR used for creating the x-url-encoded URLs with
 \fB::http::formatQuery\fR.  The default is \fButf-8\fR, as specified by RFC
 2718.  Prior to http 2.5 this was unspecified, and that behavior can be
@@ -118,45 +120,46 @@ returned by specifying the empty string (\fB{}\fR), although
 \fB::http::formatQuery\fR throwing an error processing non-latin-1
 characters.
 .TP
-\fB\-useragent\fP \fIstring\fP
-The value of the User-Agent header in the HTTP request.  The default
-is \fB"Tcl http client package 2.4."\fR
+\fB\-useragent\fR \fIstring\fR
+The value of the User-Agent header in the HTTP request.  The default is
+.QW "\fBTcl http client package 2.7\fR" .
 .RE
 .TP
-\fB::http::geturl\fP \fIurl\fP ?\fIoptions\fP? 
+\fB::http::geturl\fR \fIurl\fR ?\fIoptions\fR? 
 The \fB::http::geturl\fR command is the main procedure in the package.
 The \fB\-query\fR option causes a POST operation and
 the \fB\-validate\fR option causes a HEAD operation;
 otherwise, a GET operation is performed.  The \fB::http::geturl\fR command
 returns a \fItoken\fR value that can be used to get
-information about the transaction.  See the STATE ARRAY and ERRORS section for
+information about the transaction.  See the \fBSTATE ARRAY\fR and
+\fBERRORS\fR section for
 details.  The \fB::http::geturl\fR command blocks until the operation
 completes, unless the \fB\-command\fR option specifies a callback
 that is invoked when the HTTP transaction completes.
 \fB::http::geturl\fR takes several options:
 .RS
 .TP
-\fB\-binary\fP \fIboolean\fP
+\fB\-binary\fR \fIboolean\fR
 Specifies whether to force interpreting the URL data as binary.  Normally
 this is auto-detected (anything not beginning with a \fBtext\fR content
 type or whose content encoding is \fBgzip\fR or \fBcompress\fR is
 considered binary data).
 .TP
-\fB\-blocksize\fP \fIsize\fP
+\fB\-blocksize\fR \fIsize\fR
 The block size used when reading the URL.
 At most \fIsize\fR bytes are read at once.  After each block, a call to the
 \fB\-progress\fR callback is made (if that option is specified).
 .TP
-\fB\-channel\fP \fIname\fP
+\fB\-channel\fR \fIname\fR
 Copy the URL contents to channel \fIname\fR instead of saving it in
 \fBstate(body)\fR.
 .TP
-\fB\-command\fP \fIcallback\fP
-Invoke \fIcallback\fP after the HTTP transaction completes.
-This option causes \fB::http::geturl\fP to return immediately.
-The \fIcallback\fP gets an additional argument that is the \fItoken\fR returned
+\fB\-command\fR \fIcallback\fR
+Invoke \fIcallback\fR after the HTTP transaction completes.
+This option causes \fB::http::geturl\fR to return immediately.
+The \fIcallback\fR gets an additional argument that is the \fItoken\fR returned
 from \fB::http::geturl\fR. This token is the name of an array that is
-described in the STATE ARRAY section.  Here is a template for the
+described in the \fBSTATE ARRAY\fR section.  Here is a template for the
 callback:
 .RS
 .CS
@@ -167,27 +170,30 @@ proc httpCallback {token} {
 .CE
 .RE
 .TP
-\fB\-handler\fP \fIcallback\fP
-Invoke \fIcallback\fP whenever HTTP data is available; if present, nothing
+\fB\-handler\fR \fIcallback\fR
+Invoke \fIcallback\fR whenever HTTP data is available; if present, nothing
 else will be done with the HTTP data.  This procedure gets two additional
 arguments: the socket for the HTTP data and the \fItoken\fR returned from
-\fB::http::geturl\fR.  The token is the name of a global array that is described
-in the STATE ARRAY section.  The procedure is expected to return the number
-of bytes read from the socket.  Here is a template for the callback:
+\fB::http::geturl\fR.  The token is the name of a global array that is
+described in the \fBSTATE ARRAY\fR section.  The procedure is expected
+to return the number of bytes read from the socket.  Here is a
+template for the callback:
 .RS
 .CS
 proc httpHandlerCallback {socket token} {
     upvar #0 $token state
     # Access socket, and state as a Tcl array
+    # For example...
     ...
-    (example: set data [read $socket 1000];set nbytes [string length $data])
+    set data [read $socket 1000]
+    set nbytes [string length $data]
     ...
-    return nbytes
+    return $nbytes
 }
 .CE
 .RE
 .TP
-\fB\-headers\fP \fIkeyvaluelist\fP
+\fB\-headers\fR \fIkeyvaluelist\fR
 This option is used to add extra headers to the HTTP request.  The
 \fIkeyvaluelist\fR argument must be a list with an even number of
 elements that alternate between keys and values.  The keys become
@@ -199,7 +205,20 @@ HTTP request:
 Pragma: no-cache
 .CE
 .TP
-\fB\-progress\fP \fIcallback\fP
+\fB\-keepalive\fR \fIboolean\fR
+If true, attempt to keep the connection open for servicing
+multiple requests.  Default is 0.
+.TP
+\fB\-method\fR \fItype\fR
+Force the HTTP request method to \fItype\fR. \fB::http::geturl\fR will
+auto-select GET, POST or HEAD based on other options, but this option
+enables choices like PUT and DELETE for webdav support.
+.TP
+\fB\-myaddr\fR \fIaddress\fR
+Pass an specific local address to the underlying \fBsocket\fR call in case
+multiple interfaces are available.
+.TP
+\fB\-progress\fR \fIcallback\fR
 The \fIcallback\fR is made after each transfer of data from the URL.
 The callback gets three additional arguments: the \fItoken\fR from
 \fB::http::geturl\fR, the expected total size of the contents from the
@@ -215,13 +234,18 @@ proc httpProgress {token total current} {
 .CE
 .RE
 .TP
-\fB\-query\fP \fIquery\fP
+\fB\-protocol\fR \fIversion\fR
+Select the HTTP protocol version to use. This should be 1.0 or 1.1 (the
+default). Should only be necessary for servers that do not understand or
+otherwise complain about HTTP/1.1.
+.TP
+\fB\-query\fR \fIquery\fR
 This flag causes \fB::http::geturl\fR to do a POST request that passes the
 \fIquery\fR to the server. The \fIquery\fR must be an x-url-encoding
 formatted query.  The \fB::http::formatQuery\fR procedure can be used to
 do the formatting.
 .TP
-\fB\-queryblocksize\fP \fIsize\fP
+\fB\-queryblocksize\fR \fIsize\fR
 The block size used when posting query data to the URL.
 At most 
 \fIsize\fR
@@ -229,103 +253,106 @@ bytes are written at once.  After each block, a call to the
 \fB\-queryprogress\fR
 callback is made (if that option is specified).
 .TP
-\fB\-querychannel\fP \fIchannelID\fP
+\fB\-querychannel\fR \fIchannelID\fR
 This flag causes \fB::http::geturl\fR to do a POST request that passes the
 data contained in \fIchannelID\fR to the server. The data contained in
 \fIchannelID\fR must be an x-url-encoding
-formatted query unless the \fB\-type\fP option below is used.
+formatted query unless the \fB\-type\fR option below is used.
 If a Content-Length header is not specified via the \fB\-headers\fR options,
 \fB::http::geturl\fR attempts to determine the size of the post data
 in order to create that header.  If it is
 unable to determine the size, it returns an error.
 .TP
-\fB\-queryprogress\fP \fIcallback\fP
+\fB\-queryprogress\fR \fIcallback\fR
 The \fIcallback\fR is made after each transfer of data to the URL
 (i.e. POST) and acts exactly like the \fB\-progress\fR option (the
 callback format is the same).
 .TP
-\fB\-timeout\fP \fImilliseconds\fP
+\fB\-strict\fR \fIboolean\fR
+Whether to enforce RFC 3986 URL validation on the request.  Default is 1.
+.TP
+\fB\-timeout\fR \fImilliseconds\fR
 If \fImilliseconds\fR is non-zero, then \fB::http::geturl\fR sets up a timeout
 to occur after the specified number of milliseconds.
-A timeout results in a call to \fB::http::reset\fP and to
-the \fB-command\fP callback, if specified.
-The return value of \fB::http::status\fP is \fBtimeout\fP
+A timeout results in a call to \fB::http::reset\fR and to
+the \fB\-command\fR callback, if specified.
+The return value of \fB::http::status\fR is \fBtimeout\fR
 after a timeout has occurred.
 .TP
-\fB\-type\fP \fImime-type\fP
+\fB\-type\fR \fImime-type\fR
 Use \fImime-type\fR as the \fBContent-Type\fR value, instead of the
 default value (\fBapplication/x-www-form-urlencoded\fR) during a
 POST operation.
 .TP
-\fB\-validate\fP \fIboolean\fP
+\fB\-validate\fR \fIboolean\fR
 If \fIboolean\fR is non-zero, then \fB::http::geturl\fR does an HTTP HEAD
 request.  This request returns meta information about the URL, but the
 contents are not returned.  The meta information is available in the
-\fBstate(meta) \fR variable after the transaction.  See the STATE
-ARRAY section for details.
+\fBstate(meta) \fR variable after the transaction.  See the
+\fBSTATE ARRAY\fR section for details.
 .RE
 .TP
-\fB::http::formatQuery\fP \fIkey value\fP ?\fIkey value\fP ...?
+\fB::http::formatQuery\fR \fIkey value\fR ?\fIkey value\fR ...?
 This procedure does x-url-encoding of query data.  It takes an even
 number of arguments that are the keys and values of the query.  It
 encodes the keys and values, and generates one string that has the
 proper & and = separators.  The result is suitable for the
 \fB\-query\fR value passed to \fB::http::geturl\fR.
 .TP
-\fB::http::reset\fP \fItoken\fP ?\fIwhy\fP?
+\fB::http::reset\fR \fItoken\fR ?\fIwhy\fR?
 This command resets the HTTP transaction identified by \fItoken\fR, if
-any.  This sets the \fBstate(status)\fP value to \fIwhy\fP, which defaults to \fBreset\fR, and then calls the registered \fB\-command\fR callback.
+any.  This sets the \fBstate(status)\fR value to \fIwhy\fR, which defaults to \fBreset\fR, and then calls the registered \fB\-command\fR callback.
 .TP
-\fB::http::wait\fP \fItoken\fP
+\fB::http::wait\fR \fItoken\fR
 This is a convenience procedure that blocks and waits for the
 transaction to complete.  This only works in trusted code because it
-uses \fBvwait\fR.  Also, it's not useful for the case where
-\fB::http::geturl\fP is called \fIwithout\fP the \fB-command\fP option
-because in this case the \fB::http::geturl\fP call doesn't return
-until the HTTP transaction is complete, and thus there's nothing to
+uses \fBvwait\fR.  Also, it is not useful for the case where
+\fB::http::geturl\fR is called \fIwithout\fR the \fB\-command\fR option
+because in this case the \fB::http::geturl\fR call does not return
+until the HTTP transaction is complete, and thus there is nothing to
 wait for.
 .TP
-\fB::http::data\fP \fItoken\fP
-This is a convenience procedure that returns the \fBbody\fP element
+\fB::http::data\fR \fItoken\fR
+This is a convenience procedure that returns the \fBbody\fR element
 (i.e., the URL data) of the state array.
 .TP
-\fB::http::error\fP \fItoken\fP
-This is a convenience procedure that returns the \fBerror\fP element
+\fB::http::error\fR \fItoken\fR
+This is a convenience procedure that returns the \fBerror\fR element
 of the state array.
 .TP
-\fB::http::status\fP \fItoken\fP
-This is a convenience procedure that returns the \fBstatus\fP element of
+\fB::http::status\fR \fItoken\fR
+This is a convenience procedure that returns the \fBstatus\fR element of
 the state array.
 .TP
-\fB::http::code\fP \fItoken\fP
-This is a convenience procedure that returns the \fBhttp\fP element of the
+\fB::http::code\fR \fItoken\fR
+This is a convenience procedure that returns the \fBhttp\fR element of the
 state array.
 .TP
-\fB::http::ncode\fP \fItoken\fP
+\fB::http::ncode\fR \fItoken\fR
 This is a convenience procedure that returns just the numeric return
-code (200, 404, etc.) from the \fBhttp\fP element of the state array.
+code (200, 404, etc.) from the \fBhttp\fR element of the state array.
 .TP
-\fB::http::size\fP \fItoken\fP
-This is a convenience procedure that returns the \fBcurrentsize\fP
+\fB::http::size\fR \fItoken\fR
+This is a convenience procedure that returns the \fBcurrentsize\fR
 element of the state array, which represents the number of bytes
-received from the URL in the \fB::http::geturl\fP call.
+received from the URL in the \fB::http::geturl\fR call.
 .TP
-\fB::http::meta\fP \fItoken\fP
-This is a convenience procedure that returns the \fBmeta\fP
+\fB::http::meta\fR \fItoken\fR
+This is a convenience procedure that returns the \fBmeta\fR
 element of the state array which contains the HTTP response
 headers. See below for an explanation of this element.
 .TP
-\fB::http::cleanup\fP \fItoken\fP
+\fB::http::cleanup\fR \fItoken\fR
 This procedure cleans up the state associated with the connection
-identified by \fItoken\fP.  After this call, the procedures
-like \fB::http::data\fP cannot be used to get information
-about the operation.  It is \fIstrongly\fP recommended that you call
-this function after you're done with a given HTTP request.  Not doing
+identified by \fItoken\fR.  After this call, the procedures
+like \fB::http::data\fR cannot be used to get information
+about the operation.  It is \fIstrongly\fR recommended that you call
+this function after you are done with a given HTTP request.  Not doing
 so will result in memory not being freed, and if your app calls
-\fB::http::geturl\fP enough times, the memory leak could cause a
+\fB::http::geturl\fR enough times, the memory leak could cause a
 performance hit...or worse.
 .TP
-\fB::http::register\fP \fIproto port command\fP
+\fB::http::register\fR \fIproto port command\fR
 This procedure allows one to provide custom HTTP transport types
 such as HTTPS, by registering a prefix, the default port, and the
 command to execute to create the Tcl \fBchannel\fR. E.g.:
@@ -340,12 +367,11 @@ set token [::http::geturl https://my.secure.site/]
 .CE
 .RE
 .TP
-\fB::http::unregister\fP \fIproto\fP
+\fB::http::unregister\fR \fIproto\fR
 This procedure unregisters a protocol handler that was previously
 registered via \fB::http::register\fR.
-
-.SH "ERRORS"
-The \fB::http::geturl\fP procedure will raise errors in the following cases:
+.SH ERRORS
+The \fB::http::geturl\fR procedure will raise errors in the following cases:
 invalid command line options,
 an invalid URL,
 a URL on a non-existent host,
@@ -354,60 +380,59 @@ These errors mean that it
 cannot even start the network transaction.
 It will also raise an error if it gets an I/O error while
 writing out the HTTP request header.
-For synchronous \fB::http::geturl\fP calls (where \fB-command\fP is
+For synchronous \fB::http::geturl\fR calls (where \fB\-command\fR is
 not specified), it will raise an error if it gets an I/O error while
-reading the HTTP reply headers or data.  Because \fB::http::geturl\fP
-doesn't return a token in these cases, it does all the required
-cleanup and there's no issue of your app having to call
-\fB::http::cleanup\fP.
+reading the HTTP reply headers or data.  Because \fB::http::geturl\fR
+does not return a token in these cases, it does all the required
+cleanup and there is no issue of your app having to call
+\fB::http::cleanup\fR.
 .PP
-For asynchronous \fB::http::geturl\fP calls, all of the above error
-situations apply, except that if there's any error while 
-reading the
+For asynchronous \fB::http::geturl\fR calls, all of the above error
+situations apply, except that if there is any error while reading the
 HTTP reply headers or data, no exception is thrown.  This is because
-after writing the HTTP headers, \fB::http::geturl\fP returns, and the
+after writing the HTTP headers, \fB::http::geturl\fR returns, and the
 rest of the HTTP transaction occurs in the background.  The command
 callback can check if any error occurred during the read by calling
-\fB::http::status\fP to check the status and if its \fIerror\fP,
-calling \fB::http::error\fP to get the error message.
+\fB::http::status\fR to check the status and if its \fIerror\fR,
+calling \fB::http::error\fR to get the error message.
 .PP
 Alternatively, if the main program flow reaches a point where it needs
 to know the result of the asynchronous HTTP request, it can call
-\fB::http::wait\fP and then check status and error, just as the
+\fB::http::wait\fR and then check status and error, just as the
 callback does.
 .PP
 In any case, you must still call
-\fB::http::cleanup\fP to delete the state array when you're done.
+\fB::http::cleanup\fR to delete the state array when you are done.
 .PP
 There are other possible results of the HTTP transaction
-determined by examining the status from \fB::http::status\fP.
+determined by examining the status from \fB::http::status\fR.
 These are described below.
 .TP
 ok
-If the HTTP transaction completes entirely, then status will be \fBok\fP.
-However, you should still check the \fB::http::code\fP value to get
-the HTTP status.  The \fB::http::ncode\fP procedure provides just
-the numeric error (e.g., 200, 404 or 500) while the \fB::http::code\fP
-procedure returns a value like "HTTP 404 File not found".
+If the HTTP transaction completes entirely, then status will be \fBok\fR.
+However, you should still check the \fB::http::code\fR value to get
+the HTTP status.  The \fB::http::ncode\fR procedure provides just
+the numeric error (e.g., 200, 404 or 500) while the \fB::http::code\fR
+procedure returns a value like
+.QW "HTTP 404 File not found" .
 .TP
 eof
 If the server closes the socket without replying, then no error
-is raised, but the status of the transaction will be \fBeof\fP.
+is raised, but the status of the transaction will be \fBeof\fR.
 .TP
 error
-The error message will also be stored in the \fBerror\fP status
-array element, accessible via \fB::http::error\fP.
+The error message will also be stored in the \fBerror\fR status
+array element, accessible via \fB::http::error\fR.
 .PP
-Another error possibility is that \fB::http::geturl\fP is unable to
+Another error possibility is that \fB::http::geturl\fR is unable to
 write all the post query data to the server before the server
 responds and closes the socket.
-The error message is saved in the \fBposterror\fP status array
-element and then  \fB::http::geturl\fP attempts to complete the
+The error message is saved in the \fBposterror\fR status array
+element and then  \fB::http::geturl\fR attempts to complete the
 transaction.
 If it can read the server's response
-it will end up with an \fBok\fP status, otherwise it will have
-an \fBeof\fP status.
-
+it will end up with an \fBok\fR status, otherwise it will have
+an \fBeof\fR status.
 .SH "STATE ARRAY"
 The \fB::http::geturl\fR procedure returns a \fItoken\fR that can be used to
 get to the state of the HTTP transaction in the form of a Tcl array.
@@ -417,14 +442,14 @@ upvar #0 $token state
 .CE
 Once the data associated with the URL is no longer needed, the state
 array should be unset to free up storage.
-The \fB::http::cleanup\fP procedure is provided for that purpose.
+The \fB::http::cleanup\fR procedure is provided for that purpose.
 The following elements of
 the array are supported:
 .RS
 .TP
 \fBbody\fR
 The contents of the URL.  This will be empty if the \fB\-channel\fR
-option has been specified.  This value is returned by the \fB::http::data\fP command.
+option has been specified.  This value is returned by the \fB::http::data\fR command.
 .TP
 \fBcharset\fR
 The value of the charset attribute from the \fBContent-Type\fR meta-data
@@ -437,7 +462,7 @@ A copy of the \fBContent-Encoding\fR meta-data value.
 .TP
 \fBcurrentsize\fR
 The current number of bytes fetched from the URL.
-This value is returned by the \fB::http::size\fP command.
+This value is returned by the \fB::http::size\fR command.
 .TP
 \fBerror\fR
 If defined, this is the error string seen when the HTTP transaction
@@ -445,10 +470,10 @@ was aborted.
 .TP
 \fBhttp\fR
 The HTTP status reply from the server.  This value
-is returned by the \fB::http::code\fP command.  The format of this value is:
+is returned by the \fB::http::code\fR command.  The format of this value is:
 .RS
 .CS
-\fIHTTP/1.0 code string\fP
+\fIHTTP/1.1 code string\fR
 .CE
 The \fIcode\fR is a three-digit number defined in the HTTP standard.
 A code of 200 is OK.  Codes beginning with 4 or 5 indicate errors.
@@ -488,7 +513,7 @@ the post query data to the server.
 .TP
 \fBstatus\fR
 Either \fBok\fR, for successful completion, \fBreset\fR for
-user-reset, \fBtimeout\fP if a timeout occurred before the transaction
+user-reset, \fBtimeout\fR if a timeout occurred before the transaction
 could complete, or \fBerror\fR for an error condition.  During the
 transaction this value is the empty string.
 .TP
@@ -506,7 +531,7 @@ The requested URL.
 # Copy a URL to a file and print meta-data
 proc httpcopy { url file {chunk 4096} } {
    set out [open $file w]
-   set token [\fB::http::geturl\fR $url -channel $out \\
+   set token [\fB::http::geturl\fR $url -channel $out \e
           -progress httpCopyProgress -blocksize $chunk]
    close $out
 
@@ -537,9 +562,7 @@ proc httpCopyProgress {args} {
    flush stderr
 }
 .CE
-
 .SH "SEE ALSO"
 safe(n), socket(n), safesock(n)
-
 .SH KEYWORDS
 security policy, socket
diff --git a/doc/if.n b/doc/if.n
index b9e9219..d84cf08 100644
--- a/doc/if.n
+++ b/doc/if.n
@@ -30,7 +30,8 @@ then \fBbody2\fR is executed, and so on.
 If none of the expressions evaluates to true then \fIbodyN\fR is
 executed.
 The \fBthen\fR and \fBelse\fR arguments are optional
-``noise words'' to make the command easier to read.
+.QW "noise words"
+to make the command easier to read.
 There may be any number of \fBelseif\fR clauses, including zero.
 \fIBodyN\fR may also be omitted as long as \fBelse\fR is omitted too.
 The return value from the command is the result of the body script
diff --git a/doc/incr.n b/doc/incr.n
index c98d795..72b3ff8 100644
--- a/doc/incr.n
+++ b/doc/incr.n
@@ -24,6 +24,12 @@ integer) is added to the value of variable \fIvarName\fR;  otherwise
 1 is added to \fIvarName\fR.
 The new value is stored as a decimal string in variable \fIvarName\fR
 and also returned as result.
+.PP
+.VS 8.5
+Starting with the Tcl 8.5 release, the variable \fIvarName\fR passed
+to \fBincr\fR may be unset, and in that case, it will be set to
+the value \fIincrement\fR or to the default increment value of \fB1\fR.
+.VE 8.5
 .SH EXAMPLES
 Add one to the contents of the variable \fIx\fR:
 .CS
@@ -42,7 +48,7 @@ variable \fIx\fR:
 .CE
 .PP
 Add nothing at all to the variable \fIx\fR (often useful for checking
-whether an argument to a procedure is actually numeric and generating
+whether an argument to a procedure is actually integral and generating
 an error if it is not):
 .CS
 \fBincr\fR x 0
diff --git a/doc/info.n b/doc/info.n
index 1b11397..fae0d43 100644
--- a/doc/info.n
+++ b/doc/info.n
@@ -21,7 +21,7 @@ info \- Return information about the state of the Tcl interpreter
 .PP
 This command provides information about various internals of the Tcl
 interpreter.
-The legal \fIoption\fR's (which may be abbreviated) are:
+The legal \fIoption\fRs (which may be abbreviated) are:
 .TP
 \fBinfo args \fIprocname\fR
 Returns a list containing the names of the arguments to procedure
@@ -37,8 +37,11 @@ Returns a count of the total number of commands that have been invoked
 in this interpreter.
 .TP
 \fBinfo commands \fR?\fIpattern\fR?
-If \fIpattern\fR isn't specified,
-returns a list of names of all the Tcl commands in the current namespace,
+If \fIpattern\fR is not specified,
+.\" Do not move this .VS above the .TP
+.VS 8.5
+returns a list of names of all the Tcl commands visible
+(i.e. executable without using a qualified name) to the current namespace,
 including both the built-in commands written in C and
 the command procedures defined using the \fBproc\fR command.
 If \fIpattern\fR is specified,
@@ -51,21 +54,25 @@ and may have pattern matching special characters
 at the end to specify a set of commands in that namespace.
 If \fIpattern\fR is a qualified name,
 the resulting list of command names has each one qualified with the name
-of the specified namespace.
+of the specified namespace, and only the commands defined in the named
+namespace are returned.
+.\" Technically, most of this hasn't changed; that's mostly just the
+.\" way it always worked. Hardly anyone knew that though.
+.VE 8.5
 .TP
 \fBinfo complete \fIcommand\fR
 Returns 1 if \fIcommand\fR is a complete Tcl command in the sense of
 having no unclosed quotes, braces, brackets or array element names.
-If the command doesn't appear to be complete then 0 is returned.
+If the command does not appear to be complete then 0 is returned.
 This command is typically used in line-oriented input environments
 to allow users to type in commands that span multiple lines;  if the
-command isn't complete, the script can delay evaluating it until additional
+command is not complete, the script can delay evaluating it until additional
 lines have been typed to complete the command.
 .TP
 \fBinfo default \fIprocname arg varname\fR
 \fIProcname\fR must be the name of a Tcl command procedure and \fIarg\fR
 must be the name of an argument to that procedure.  If \fIarg\fR
-doesn't have a default value then the command returns \fB0\fR.
+does not have a default value then the command returns \fB0\fR.
 Otherwise it returns \fB1\fR and places the default value of \fIarg\fR
 into variable \fIvarname\fR.
 .TP
@@ -73,18 +80,125 @@ into variable \fIvarname\fR.
 Returns \fB1\fR if the variable named \fIvarName\fR exists in the
 current context (either as a global or local variable) and has been
 defined by being given a value, returns \fB0\fR otherwise.
-.VS 8.4
+.TP
+\fBinfo frame\fR ?\fInumber\fR?
+This command provides access to all frames on the stack, even those
+hidden from \fBinfo level\fR. If \fInumber\fR is not specified, this
+command returns a number giving the frame level of the command. This
+is 1 if the command is invoked at top-level. If \fInumber\fR is
+specified, then the result is a dictionary containing the location
+information for the command at the \fInumber\fRed level on the stack.
+.RS
+.PP
+If \fInumber\fR is positive (> 0) then it selects a particular stack
+level (1 refers to the top-most active command, i.e., \fBinfo frame\fR
+itself, 2 to the command it was called from, and so on); otherwise it
+gives a level relative to the current command (0 refers to the current
+command, i.e., \fBinfo frame\fR itself, -1 to its caller, and so on).
+.PP
+This is similar to how \fBinfo level\fR works, except that this
+subcommand reports all frames, like \fBsource\fRd scripts,
+\fBeval\fRs, \fBuplevel\fRs, etc.
+.PP
+Note that for nested commands, like
+.QW "foo [bar [x]]" ,
+only
+.QW x
+will be seen by an \fBinfo frame\fR invoked within
+.QW x .
+This is the same as for \fBinfo level\fR and error stack traces.
+.PP
+The result dictionary may contain the keys listed below, with the
+specified meanings for their values:
+.TP
+\fBtype\fR
+This entry is always present and describes the nature of the location
+for the command. The recognized values are \fBsource\fR, \fBproc\fR,
+\fBeval\fR, and \fBprecompiled\fR.
+.RS
+.TP
+\fBsource\fR\0\0\0\0\0\0\0\0
+means that the command is found in a script loaded by the \fBsource\fR
+command.
+.TP
+\fBproc\fR\0\0\0\0\0\0\0\0
+means that the command is found in dynamically created procedure body.
+.TP
+\fBeval\fR\0\0\0\0\0\0\0\0
+means that the command is executed by \fBeval\fR or \fBuplevel\fR.
+.TP
+\fBprecompiled\fR\0\0\0\0\0\0\0\0
+means that the command is found in a precompiled script (loadable by
+the package \fBtbcload\fR), and no further information will be
+available.
+.RE
+.TP
+\fBline\fR
+This entry provides the number of the line the command is at inside of
+the script it is a part of. This information is not present for type
+\fBprecompiled\fR. For type \fBsource\fR this information is counted
+relative to the beginning of the file, whereas for the last two types
+the line is counted relative to the start of the script.
+.TP
+\fBfile\fR
+This entry is present only for type \fBsource\fR. It provides the
+normalized path of the file the command is in.
+.TP
+\fBcmd\fR
+This entry provides the string representation of the command. This is
+usually the unsubstituted form, however for commands which are a pure
+list executed by eval it is the substituted form as they have no other
+string representation. Care is taken that the pure-List property of
+the latter is not spoiled.
+.TP
+\fBproc\fR
+This entry is present only if the command is found in the body of a
+regular Tcl procedure. It then provides the name of that procedure.
+.TP
+\fBlambda\fR
+This entry is present only if the command is found in the body of an
+anonymous Tcl procedure, i.e. a lambda. It then provides the entire
+definition of the lambda in question.
+.TP
+\fBlevel\fR
+This entry is present only if the queried frame has a corresponding
+frame returned by \fBinfo level\fR. It provides the index of this
+frame, relative to the current level (0 and negative numbers).
+.PP
+A thing of note is that for procedures statically defined in files the
+locations of commands in their bodies will be reported with type
+\fBsource\fR and absolute line numbers, and not as type
+\fBproc\fR. The same is true for procedures nested in statically
+defined procedures, and literal eval scripts in files or statically
+defined procedures.
+.PP
+In contrast, a procedure definition or \fBeval\fR within a dynamically
+\fBeval\fRuated environment count linenumbers relative to the start of
+their script, even if they would be able to count relative to the
+start of the outer dynamic script. That type of number usually makes
+more sense.
+.PP
+A different way of describing this behaviour is that file based
+locations are tracked as deeply as possible, and where this is not
+possible the lines are counted based on the smallest possible
+\fBeval\fR or procedure body, as that scope is usually easier to find
+than any dynamic outer scope.
+.PP
+The syntactic form \fB{*}\fR is handled like \fBeval\fR. I.e. if it
+is given a literal list argument the system tracks the linenumber
+within the list words as well, and otherwise all linenumbers are
+counted relative to the start of each word (smallest scope)
+.RE
 .TP
 \fBinfo functions \fR?\fIpattern\fR?
-If \fIpattern\fR isn't specified, returns a list of all the math
+If \fIpattern\fR is not specified, returns a list of all the math
 functions currently defined.
 If \fIpattern\fR is specified, only those functions whose name matches
 \fIpattern\fR are returned.  Matching is determined using the same
 rules as for \fBstring match\fR.
-.VE
 .TP
 \fBinfo globals \fR?\fIpattern\fR?
-If \fIpattern\fR isn't specified, returns a list of all the names
+If \fIpattern\fR is not specified, returns a list of all the names
 of currently-defined global variables.
 Global variables are variables in the global namespace.
 If \fIpattern\fR is specified, only those names matching \fIpattern\fR
@@ -94,13 +208,11 @@ are returned.  Matching is determined using the same rules as for
 \fBinfo hostname\fR
 Returns the name of the computer on which this invocation is being
 executed.
-.VS
 Note that this name is not guaranteed to be the fully qualified domain
 name of the host.  Where machines have several different names (as is
 common on systems with both TCP/IP (DNS) and NetBIOS-based networking
 installed,) it is the name that is suitable for TCP/IP networking that
 is returned.
-.VE
 .TP
 \fBinfo level\fR ?\fInumber\fR?
 If \fInumber\fR is not specified, this command returns a number
@@ -135,7 +247,7 @@ To get a list of just the packages in the current interpreter, specify
 an empty string for the \fIinterp\fR argument.
 .TP
 \fBinfo locals \fR?\fIpattern\fR?
-If \fIpattern\fR isn't specified, returns a list of all the names
+If \fIpattern\fR is not specified, returns a list of all the names
 of currently-defined local variables, including arguments to the
 current procedure, if any.
 Variables defined with the \fBglobal\fR, \fBupvar\fR  and
@@ -154,7 +266,7 @@ Returns the value of the global variable \fBtcl_patchLevel\fR; see
 the \fBtclvars\fR manual entry for more information.
 .TP
 \fBinfo procs \fR?\fIpattern\fR?
-If \fIpattern\fR isn't specified, returns a list of all the
+If \fIpattern\fR is not specified, returns a list of all the
 names of Tcl command procedures in the current namespace.
 If \fIpattern\fR is specified,
 only those procedure names in the current namespace
@@ -180,7 +292,7 @@ Otherwise the command returns an empty string.
 \fBinfo sharedlibextension\fR
 Returns the extension used on this platform for the names of files
 containing shared libraries (for example, \fB.so\fR under Solaris).
-If shared libraries aren't supported on this platform then an empty
+If shared libraries are not supported on this platform then an empty
 string is returned.
 .TP
 \fBinfo tclversion\fR
@@ -188,7 +300,7 @@ Returns the value of the global variable \fBtcl_version\fR; see
 the \fBtclvars\fR manual entry for more information.
 .TP
 \fBinfo vars\fR ?\fIpattern\fR?
-If \fIpattern\fR isn't specified,
+If \fIpattern\fR is not specified,
 returns a list of all the names of currently-visible variables.
 This includes locals and currently-visible globals.
 If \fIpattern\fR is specified, only those names matching \fIpattern\fR
@@ -203,11 +315,14 @@ If \fIpattern\fR is a qualified name,
 the resulting list of variable names
 has each matching namespace variable qualified with the name
 of its namespace.
-Note that a currently-visible variable may not yet "exist" if it has not
+Note that a currently-visible variable may not yet
+.QW exist
+if it has not
 been set (e.g. a variable declared but not set by \fBvariable\fR).
 .SH EXAMPLE
 This command prints out a procedure suitable for saving in a Tcl
 script:
+.PP
 .CS
 proc printProc {procName} {
     set result [list proc $procName]
@@ -224,13 +339,10 @@ proc printProc {procName} {
     puts [lappend result $formals [\fBinfo body\fR $procName]]
 }
 .CE
-
 .SH "SEE ALSO"
 global(n), proc(n)
-
 .SH KEYWORDS
 command, information, interpreter, level, namespace, procedure, variable
-
-'\" Local Variables:
-'\" mode: nroff
-'\" End:
+.\" Local Variables:
+.\" mode: nroff
+.\" End:
diff --git a/doc/interp.n b/doc/interp.n
index bbe7826..c753ee9 100644
--- a/doc/interp.n
+++ b/doc/interp.n
@@ -1,5 +1,6 @@
 '\"
 '\" Copyright (c) 1995-1996 Sun Microsystems, Inc.
+'\" Copyright (c) 2004 Donal K. Fellows
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -11,15 +12,14 @@
 .SH NAME
 interp \- Create and manipulate Tcl interpreters
 .SH SYNOPSIS
-\fBinterp \fIoption \fR?\fIarg arg ...\fR?
+\fBinterp \fIsubcommand \fR?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
-This command makes it possible to create one or more new Tcl 
+This command makes it possible to create one or more new Tcl
 interpreters that co-exist with the creating interpreter in the
 same application.  The creating interpreter is called the \fImaster\fR
-and the new interpreter is called a \fIslave\fR. 
+and the new interpreter is called a \fIslave\fR.
 A master can create any number of slaves, and each slave can
 itself create additional slaves for which it is master, resulting
 in a hierarchy of interpreters.
@@ -32,7 +32,11 @@ a command in a slave interpreter which, when invoked, causes a
 command to be invoked in its master interpreter or in another slave
 interpreter.  The only other connections between interpreters are
 through environment variables (the \fBenv\fR variable), which are
-normally shared among all interpreters in the application. Note that the
+normally shared among all interpreters in the application,
+.VS 8.5
+and by resource limit exceeded callbacks.
+.VE 8.5
+Note that the
 name space for files (such as the names returned by the \fBopen\fR command)
 is no longer shared between interpreters. Explicit commands are provided to
 share files and to transfer references to open files from one interpreter
@@ -45,7 +49,6 @@ scripts without fear of them damaging other interpreters or the
 application's environment. For example, all IO channel creation
 commands and subprocess creation commands are made inaccessible to safe
 interpreters.
-.VS
 See \fBSAFE INTERPRETERS\fR below for more information on
 what features are present in a safe interpreter.
 The dangerous functionality is not removed from the safe interpreter;
@@ -53,10 +56,9 @@ instead, it is \fIhidden\fR, so that only trusted interpreters can obtain
 access to it. For a detailed explanation of hidden commands, see
 \fBHIDDEN COMMANDS\fR, below.
 The alias mechanism can be used for protected communication (analogous to a
-kernel call) between a slave interpreter and its master. 
-See \fBALIAS INVOCATION\fR, below, for more details 
+kernel call) between a slave interpreter and its master.
+See \fBALIAS INVOCATION\fR, below, for more details
 on how the alias mechanism works.
-.VE
 .PP
 A qualified interpreter name is a proper Tcl lists containing a subset of its
 ancestors in the interpreter hierarchy, terminated by the string naming the
@@ -78,7 +80,7 @@ Both restrictions are motivated by safety concerns.
 The \fBinterp\fR command is used to create, delete, and manipulate
 slave interpreters, and to share or transfer
 channels between interpreters.  It can have any of several forms, depending
-on the \fIoption\fR argument:
+on the \fIsubcommand\fR argument:
 .TP
 \fBinterp\fR \fBalias\fR \fIsrcPath\fR \fIsrcToken\fR
 Returns a Tcl list whose elements are the \fItargetCmd\fR and
@@ -102,7 +104,9 @@ may be anywhere in the hierarchy of interpreters under the interpreter
 invoking the command.
 \fISrcPath\fR and \fIsrcCmd\fR identify the source of the alias.
 \fISrcPath\fR is a Tcl list whose elements select a particular
-interpreter.  For example, ``\fBa b\fR'' identifies an interpreter
+interpreter.  For example,
+.QW "\fBa b\fR"
+identifies an interpreter
 \fBb\fR, which is a slave of interpreter \fBa\fR, which is a slave
 of the invoking interpreter.  An empty list specifies the interpreter
 invoking the command.  \fIsrcCmd\fR gives the name of a new
@@ -116,7 +120,7 @@ already exist; it is not created by this command.
 The alias arranges for the given target command to be invoked
 in the target interpreter whenever the given source command is
 invoked in the source interpreter.  See \fBALIAS INVOCATION\fR below for
-more details. 
+more details.
 The command returns a token that uniquely identifies the command created
 \fIsrcCmd\fR, even if the command is renamed afterwards. The token may but
 does not have to be equal to \fIsrcCmd\fR.
@@ -124,16 +128,26 @@ does not have to be equal to \fIsrcCmd\fR.
 \fBinterp\fR \fBaliases \fR?\fIpath\fR?
 This command returns a Tcl list of the tokens of all the source commands for
 aliases defined in the interpreter identified by \fIpath\fR. The tokens
-correspond to the values returned when 
-the aliases were created (which may not be the same 
+correspond to the values returned when
+the aliases were created (which may not be the same
 as the current names of the commands).
 .TP
+\fBinterp bgerror \fIpath\fR ?\fIcmdPrefix\fR?
+.VS 8.5
+This command either gets or sets the current background error handler
+for the interpreter identified by \fIpath\fR. If \fIcmdPrefix\fR is
+absent, the current background error handler is returned, and if it is
+present, it is a list of words (of minimum length one) that describes
+what to set the interpreter's background error to. See the
+\fBBACKGROUND ERROR HANDLING\fR section for more details.
+.VE 8.5
+.TP
 \fBinterp\fR \fBcreate \fR?\fB\-safe\fR? ?\fB\-\|\-\fR? ?\fIpath\fR?
 Creates a slave interpreter identified by \fIpath\fR and a new command,
 called a \fIslave command\fR. The name of the slave command is the last
 component of \fIpath\fR. The new slave interpreter and the slave command
 are created in the interpreter identified by the path obtained by removing
-the last component from \fIpath\fR. For example, if \fIpath is \fBa b
+the last component from \fIpath\fR. For example, if \fIpath\fR is \fBa b
 c\fR then a new slave interpreter and slave command named \fBc\fR are
 created in the interpreter identified by the path \fBa b\fR.
 The slave command may be used to manipulate the new interpreter as
@@ -152,6 +166,44 @@ given name already exists in this master.
 The initial recursion limit of the slave interpreter is set to the
 current recursion limit of its parent interpreter.
 .TP
+\fBinterp\fR \fBdebug \fIpath\fR ?\fI\-frame\fR ?\fIbool\fR??
+.
+Controls whether frame-level stack information is captured in the
+slave interpreter identified by \fIpath\fR.  If no arguments are
+given, option and current setting are returned.  If \fI\-frame\fR
+is given, the debug setting is set to the given boolean if provided
+and the current setting is returned.
+This only effects the output of \fBinfo frame\fR, in that exact
+frame-level information for command invocation at the bytecode level
+is only captured with this setting on.
+.PP
+.RS
+For example, with code like
+.PP
+.CS
+\fBproc\fR mycontrol {... script} {
+  ...
+  \fBuplevel\fR 1 $script
+  ...
+}
+
+\fBproc\fR dosomething {...} {
+  ...
+  mycontrol {
+    somecode
+  }
+}
+.CE
+.PP
+the standard setting will provide a relative line number for the
+command \fBsomecode\fR and the relevant frame will be of type
+\fBeval\fR. With frame-debug active on the other hand the tracking
+extends so far that the system will be able to determine the file and
+absolute line number of this command, and return a frame of type
+\fBsource\fR. This more exact information is paid for with slower
+execution of all commands.
+.RE
+.TP
 \fBinterp\fR \fBdelete \fR?\fIpath ...?\fR
 Deletes zero or more interpreters given by the optional \fIpath\fR
 arguments, and for each interpreter, it also deletes its slaves. The
@@ -163,9 +215,9 @@ exists, the command raises an error.
 This command concatenates all of the \fIarg\fR arguments in the same
 fashion as the \fBconcat\fR command, then evaluates the resulting string as
 a Tcl script in the slave interpreter identified by \fIpath\fR. The result
-of this evaluation (including error information such as the \fBerrorInfo\fR
-and \fBerrorCode\fR variables, if an error occurs) is returned to the
-invoking interpreter.
+of this evaluation (including all \fBreturn\fR options,
+such as \fB\-errorinfo\fR and \fB\-errorcode\fR information, if an
+error occurs) is returned to the invoking interpreter.
 Note that the script will be executed in the current context stack frame of the
 \fIpath\fR interpreter; this is so that the implementations (in a master
 interpreter) of aliases in a slave interpreter can execute scripts in
@@ -173,10 +225,9 @@ the slave that find out information about the slave's current state
 and stack frame.
 .TP
 \fBinterp exists \fIpath\fR
-Returns  \fB1\fR if a slave interpreter by the specified \fIpath\fR
+Returns \fB1\fR if a slave interpreter by the specified \fIpath\fR
 exists in this master, \fB0\fR otherwise. If \fIpath\fR is omitted, the
 invoking interpreter is used.
-.VS "" BR
 .TP
 \fBinterp expose \fIpath\fR \fIhiddenName\fR ?\fIexposedCmdName\fR?
 Makes the hidden command \fIhiddenName\fR exposed, eventually bringing
@@ -191,11 +242,11 @@ Hidden commands are explained in more detail in \fBHIDDEN COMMANDS\fR, below.
 \fBinterp\fR \fBhide\fR \fIpath\fR \fIexposedCmdName\fR ?\fIhiddenCmdName\fR?
 Makes the exposed command \fIexposedCmdName\fR hidden, renaming
 it to the hidden command \fIhiddenCmdName\fR, or keeping the same name if
-\fIhiddenCmdName\fR is not given, in the interpreter denoted 
+\fIhiddenCmdName\fR is not given, in the interpreter denoted
 by \fIpath\fR.
 If a hidden command with the targeted name already exists, this command
 fails.
-Currently both \fIexposedCmdName\fR and \fIhiddenCmdName\fR can 
+Currently both \fIexposedCmdName\fR and \fIhiddenCmdName\fR can
 not contain namespace qualifiers, or an error is raised.
 Commands to be hidden by \fBinterp hide\fR are looked up in the global
 namespace even if the current namespace is not the global one. This
@@ -207,21 +258,41 @@ Hidden commands are explained in more detail in \fBHIDDEN COMMANDS\fR, below.
 Returns a list of the names of all hidden commands in the interpreter
 identified by \fIpath\fR.
 .TP
-\fBinterp\fR \fBinvokehidden\fR \fIpath\fR ?\fB-global\fR? \fIhiddenCmdName\fR ?\fIarg ...\fR?
+\fBinterp\fR \fBinvokehidden\fR \fIpath\fR ?\fI\-option ...\fR? \fIhiddenCmdName\fR ?\fIarg ...\fR?
 Invokes the hidden command \fIhiddenCmdName\fR with the arguments supplied
 in the interpreter denoted by \fIpath\fR. No substitutions or evaluation
-are applied to the arguments.
-If the \fB-global\fR flag is present, the hidden command is invoked at the
+are applied to the arguments. Three \fI\-option\fRs are supported, all
+of which start with \fB\-\fR: \fB\-namespace\fR (which takes a single
+argument afterwards, \fInsName\fR), \fB\-global\fR, and \fB\-\|\-\fR.
+If the \fB\-namespace\fR flag is present, the hidden command is invoked in
+the namespace called \fInsName\fR in the target interpreter.
+If the \fB\-global\fR flag is present, the hidden command is invoked at the
 global level in the target interpreter; otherwise it is invoked at the
 current call frame and can access local variables in that and outer call
 frames.
+The \fB\-\|\-\fR flag allows the \fIhiddenCmdName\fR argument to start with a
+.QW \-
+character, and is otherwise unnecessary.
+If both the \fB\-namespace\fR and \fB\-global\fR flags are present, the
+\fB\-namespace\fR flag is ignored.
+Note that the hidden command will be executed (by default) in the
+current context stack frame of the \fIpath\fR interpreter.
 Hidden commands are explained in more detail in \fBHIDDEN COMMANDS\fR, below.
-.VE
+.TP
+\fBinterp\fR \fBlimit\fR \fIpath\fR \fIlimitType\fR ?\fI\-option\fR? ?\fIvalue\fR \fI...\fR?
+.VS 8.5
+Sets up, manipulates and queries the configuration of the resource
+limit \fIlimitType\fR for the interpreter denoted by \fIpath\fR.  If
+no \fI\-option\fR is specified, return the current configuration of the
+limit.  If \fI\-option\fR is the sole argument, return the value of that
+option.  Otherwise, a list of \fI\-option\fR/\fIvalue\fR argument pairs
+must supplied. See \fBRESOURCE LIMITS\fR below for a more detailed
+explanation of what limits and options are supported.
+.VE 8.5
 .TP
 \fBinterp issafe\fR ?\fIpath\fR?
 Returns \fB1\fR if the interpreter identified by the specified \fIpath\fR
 is safe, \fB0\fR otherwise.
-.VS "" BR
 .TP
 \fBinterp marktrusted\fR \fIpath\fR
 Marks the interpreter identified by \fIpath\fR as trusted. Does
@@ -229,7 +300,6 @@ not expose the hidden commands. This command can only be invoked from a
 trusted interpreter.
 The command has no effect if the interpreter identified by \fIpath\fR is
 already trusted.
-.VE
 .TP
 \fBinterp\fR \fBrecursionlimit\fR \fIpath\fR ?\fInewlimit\fR?
 Returns the maximum allowable nesting depth for the interpreter
@@ -239,14 +309,16 @@ of more than \fInewlimit\fR calls to \fBTcl_Eval()\fR
 and related procedures in that interpreter will return an error.
 The \fInewlimit\fR value is also returned.
 The \fInewlimit\fR value must be a positive integer between 1 and the
-maximum value of a non-long integer on the platform.  
-.sp
+maximum value of a non-long integer on the platform.
+.RS
+.PP
 The command sets the maximum size of the Tcl call stack only. It cannot
 by itself prevent stack overflows on the C stack being used by the
 application. If your machine has a limit on the size of the C stack, you
 may get stack overflows before reaching the limit set by the command. If
 this happens, see if there is a mechanism in your system for increasing
-the maximum size of the C stack. 
+the maximum size of the C stack.
+.RE
 .TP
 \fBinterp\fR \fBshare\fR \fIsrcPath channelId destPath\fR
 Causes the IO channel identified by \fIchannelId\fR to become shared
@@ -293,7 +365,7 @@ The valid forms of this command are:
 \fIslave \fBaliases\fR
 Returns a Tcl list whose elements are the tokens of all the
 aliases in \fIslave\fR.  The tokens correspond to the values returned when
-the aliases were created (which may not be the same 
+the aliases were created (which may not be the same
 as the current names of the commands).
 .TP
 \fIslave \fBalias \fIsrcToken\fR
@@ -320,19 +392,28 @@ The command returns a token that uniquely identifies the command created
 \fIsrcCmd\fR, even if the command is renamed afterwards. The token may but
 does not have to be equal to \fIsrcCmd\fR.
 .TP
+\fIslave \fBbgerror\fR ?\fIcmdPrefix\fR?
+.VS 8.5
+This command either gets or sets the current background error handler
+for the \fIslave\fR interpreter. If \fIcmdPrefix\fR is
+absent, the current background error handler is returned, and if it is
+present, it is a list of words (of minimum length one) that describes
+what to set the interpreter's background error to. See the
+\fBBACKGROUND ERROR HANDLING\fR section for more details.
+.VE 8.5
+.TP
 \fIslave \fBeval \fIarg \fR?\fIarg ..\fR?
 This command concatenates all of the \fIarg\fR arguments in
 the same fashion as the \fBconcat\fR command, then evaluates
 the resulting string as a Tcl script in \fIslave\fR.
-The result of this evaluation (including error information
-such as the \fBerrorInfo\fR and \fBerrorCode\fR variables, if an
+The result of this evaluation (including all \fBreturn\fR options,
+such as \fB\-errorinfo\fR and \fB\-errorcode\fR information, if an
 error occurs) is returned to the invoking interpreter.
 Note that the script will be executed in the current context stack frame
 of \fIslave\fR; this is so that the implementations (in a master
 interpreter) of aliases in a slave interpreter can execute scripts in
 the slave that find out information about the slave's current state
 and stack frame.
-.VS "" BR
 .TP
 \fIslave \fBexpose \fIhiddenName \fR?\fIexposedCmdName\fR?
 This command exposes the hidden command \fIhiddenName\fR, eventually bringing
@@ -344,12 +425,12 @@ fails.
 For more details on hidden commands, see \fBHIDDEN COMMANDS\fR, below.
 .TP
 \fIslave \fBhide \fIexposedCmdName\fR ?\fIhiddenCmdName\fR?
-This command hides the exposed command \fIexposedCmdName\fR, renaming it to 
+This command hides the exposed command \fIexposedCmdName\fR, renaming it to
 the hidden command \fIhiddenCmdName\fR, or keeping the same name if the
 argument is not given, in the \fIslave\fR interpreter.
 If a hidden command with the targeted name already exists, this command
 fails.
-Currently both \fIexposedCmdName\fR and \fIhiddenCmdName\fR can 
+Currently both \fIexposedCmdName\fR and \fIhiddenCmdName\fR can
 not contain namespace qualifiers, or an error is raised.
 Commands to be hidden are looked up in the global
 namespace even if the current namespace is not the global one. This
@@ -360,27 +441,46 @@ For more details on hidden commands, see \fBHIDDEN COMMANDS\fR, below.
 \fIslave \fBhidden\fR
 Returns a list of the names of all hidden commands in \fIslave\fR.
 .TP
-\fIslave \fBinvokehidden\fR ?\fB-global\fR \fIhiddenName \fR?\fIarg ..\fR?
+\fIslave \fBinvokehidden\fR ?\fI\-option ...\fR? \fIhiddenName \fR?\fIarg ..\fR?
 This command invokes the hidden command \fIhiddenName\fR with the
 supplied arguments, in \fIslave\fR. No substitutions or evaluations are
-applied to the arguments.
-If the \fB-global\fR flag is given, the command is invoked at the global
+applied to the arguments. Three \fI\-option\fRs are supported, all
+of which start with \fB\-\fR: \fB\-namespace\fR (which takes a single
+argument afterwards, \fInsName\fR), \fB\-global\fR, and \fB\-\|\-\fR.
+If the \fB\-namespace\fR flag is given, the hidden command is invoked in
+the specified namespace in the slave.
+If the \fB\-global\fR flag is given, the command is invoked at the global
 level in the slave; otherwise it is invoked at the current call frame and
 can access local variables in that or outer call frames.
+The \fB\-\|\-\fR flag allows the \fIhiddenCmdName\fR argument to start with a
+.QW \-
+character, and is otherwise unnecessary.
+If both the \fB\-namespace\fR and \fB\-global\fR flags are given, the
+\fB\-namespace\fR flag is ignored.
+Note that the hidden command will be executed (by default) in the
+current context stack frame of \fIslave\fR.
 For more details on hidden commands,
 see \fBHIDDEN COMMANDS\fR, below.
-.VE
 .TP
 \fIslave \fBissafe\fR
 Returns  \fB1\fR if the slave interpreter is safe, \fB0\fR otherwise.
-.VS "" BR
+.TP
+\fIslave \fBlimit\fR \fIlimitType\fR ?\fI\-option\fR? ?\fIvalue\fR \fI...\fR?
+.VS 8.5
+Sets up, manipulates and queries the configuration of the resource
+limit \fIlimitType\fR for the slave interpreter.  If no \fI\-option\fR
+is specified, return the current configuration of the limit.  If
+\fI\-option\fR is the sole argument, return the value of that option.
+Otherwise, a list of \fI\-option\fR/\fIvalue\fR argument pairs must
+supplied. See \fBRESOURCE LIMITS\fR below for a more detailed explanation of
+what limits and options are supported.
+.VE 8.5
 .TP
 \fIslave \fBmarktrusted\fR
 Marks the slave interpreter as trusted. Can only be invoked by a
 trusted interpreter. This command does not expose any hidden
 commands in the slave interpreter. The command has no effect if the slave
 is already trusted.
-.VE
 .TP
 \fIslave\fR \fBrecursionlimit\fR ?\fInewlimit\fR?
 Returns the maximum allowable nesting depth for the \fIslave\fR interpreter.
@@ -389,14 +489,16 @@ set so that nesting of more than \fInewlimit\fR calls to \fBTcl_Eval()\fR
 and related procedures in \fIslave\fR will return an error.
 The \fInewlimit\fR value is also returned.
 The \fInewlimit\fR value must be a positive integer between 1 and the
-maximum value of a non-long integer on the platform.  
-.sp
+maximum value of a non-long integer on the platform.
+.RS
+.PP
 The command sets the maximum size of the Tcl call stack only. It cannot
 by itself prevent stack overflows on the C stack being used by the
 application. If your machine has a limit on the size of the C stack, you
 may get stack overflows before reaching the limit set by the command. If
 this happens, see if there is a mechanism in your system for increasing
-the maximum size of the C stack. 
+the maximum size of the C stack.
+.RE
 .SH "SAFE INTERPRETERS"
 .PP
 A safe interpreter is one with restricted functionality, so that
@@ -422,32 +524,33 @@ A safe interpreter is created with exactly the following set of
 built-in commands:
 .DS
 .ta 1.2i 2.4i 3.6i
-\fBafter	append	array	binary
-break	case	catch	clock
-close	concat	continue	eof
-error	eval	expr	fblocked
-fcopy	fileevent	flush	for
-foreach	format	gets	global
-if	incr	info	interp
-join	lappend	lindex	linsert
-list	llength	lrange	lreplace
-lsearch	lsort	namespace	package
-pid	proc	puts	read
-regexp	regsub	rename	return
-scan	seek	set	split
-string	subst	switch	tell
-time	trace	unset	update
-uplevel	upvar	variable	vwait
-while\fR
+\fBafter\fR	\fBappend\fR	\fBapply\fR	\fBarray\fR
+\fBbinary\fR	\fBbreak\fR	\fBcatch\fR	\fBchan\fR
+\fBclock\fR	\fBclose\fR	\fBconcat\fR	\fBcontinue\fR
+\fBdict\fR	\fBeof\fR	\fBerror\fR	\fBeval\fR
+\fBexpr\fR	\fBfblocked\fR	\fBfcopy\fR	\fBfileevent\fR
+\fBflush\fR	\fBfor\fR	\fBforeach\fR	\fBformat\fR
+\fBgets\fR	\fBglobal\fR	\fBif\fR	\fBincr\fR
+\fBinfo\fR	\fBinterp\fR	\fBjoin\fR	\fBlappend\fR
+\fBlassign\fR	\fBlindex\fR	\fBlinsert\fR	\fBlist\fR
+\fBllength\fR	\fBlrange\fR	\fBlrepeat\fR	\fBlreplace\fR
+\fBlsearch\fR	\fBlset\fR	\fBlsort\fR	\fBnamespace\fR
+\fBpackage\fR	\fBpid\fR	\fBproc\fR	\fBputs\fR
+\fBread\fR	\fBregexp\fR	\fBregsub\fR	\fBrename\fR
+\fBreturn\fR	\fBscan\fR	\fBseek\fR	\fBset\fR
+\fBsplit\fR	\fBstring\fR	\fBsubst\fR	\fBswitch\fR
+\fBtell\fR	\fBtime\fR	\fBtrace\fR	\fBunset\fR
+\fBupdate\fR	\fBuplevel\fR	\fBupvar\fR	\fBvariable\fR
+\fBvwait\fR	\fBwhile\fR
 .DE
-.VS ""  BR
 The following commands are hidden by \fBinterp create\fR when it
 creates a safe interpreter:
 .DS
 .ta 1.2i 2.4i 3.6i
-\fBcd	encoding	exec	exit
-fconfigure	file	glob	load
-open	pwd	socket	source\fR
+\fBcd\fR	\fBencoding\fR	\fBexec\fR	\fBexit\fR
+\fBfconfigure\fR	\fBfile\fR	\fBglob\fR	\fBload\fR
+\fBopen\fR	\fBpwd\fR	\fBsocket\fR	\fBsource\fR
+\fBunload\fR
 .DE
 These commands can be recreated later as Tcl procedures or aliases, or
 re-exposed by \fBinterp expose\fR.
@@ -456,25 +559,24 @@ The following commands from Tcl's library of support procedures are
 not present in a safe interpreter:
 .DS
 .ta 1.6i 3.2i
-\fBauto_exec_ok	auto_import	auto_load
-auto_load_index	auto_qualify	unknown\fR
+\fBauto_exec_ok\fR	\fBauto_import\fR	\fBauto_load\fR
+\fBauto_load_index\fR	\fBauto_qualify\fR	\fBunknown\fR
 .DE
 Note in particular that safe interpreters have no default \fBunknown\fR
-command, so Tcl's default autoloading facilities are not available.  
+command, so Tcl's default autoloading facilities are not available.
 Autoload access to Tcl's commands that are normally autoloaded:
 .DS
 .ta 2.1i
-\fB
-auto_mkindex	auto_mkindex_old
-auto_reset	history
-parray	pkg_mkIndex
-::pkg::create	::safe::interpAddToAccessPath
-::safe::interpCreate	::safe::interpConfigure
-::safe::interpDelete	::safe::interpFindInAccessPath
-::safe::interpInit	::safe::setLogCmd
-tcl_endOfWord	tcl_findLibrary
-tcl_startOfNextWord	tcl_startOfPreviousWord
-tcl_wordBreakAfter	tcl_wordBreakBefore\fR
+\fBauto_mkindex\fR	\fBauto_mkindex_old\fR
+\fBauto_reset\fR	\fBhistory\fR
+\fBparray\fR	\fBpkg_mkIndex\fR
+\fB::pkg::create\fR	\fB::safe::interpAddToAccessPath\fR
+\fB::safe::interpCreate\fR	\fB::safe::interpConfigure\fR
+\fB::safe::interpDelete\fR	\fB::safe::interpFindInAccessPath\fR
+\fB::safe::interpInit\fR	\fB::safe::setLogCmd\fR
+\fBtcl_endOfWord\fR	\fBtcl_findLibrary\fR
+\fBtcl_startOfNextWord\fR	\fBtcl_startOfPreviousWord\fR
+\fBtcl_wordBreakAfter\fR	\fBtcl_wordBreakBefore\fR
 .DE
 can only be provided by explicit definition of an \fBunknown\fR command
 in the safe interpreter.  This will involve exposing the \fBsource\fR
@@ -482,7 +584,6 @@ command.  This is most easily accomplished by creating the safe interpreter
 with Tcl's \fBSafe\-Tcl\fR mechanism.  \fBSafe\-Tcl\fR provides safe
 versions of \fBsource\fR, \fBload\fR, and other Tcl commands needed
 to support autoloading of commands and the loading of packages.
-.VE
 .PP
 In addition, the \fBenv\fR variable is not present in a safe interpreter,
 so it cannot share environment variables with other interpreters. The
@@ -518,9 +619,10 @@ as they would be for any other command invoked in that interpreter.
 The command procedure for the source command takes its arguments
 and merges them with the \fItargetCmd\fR and \fIarg\fRs for the
 alias to create a new array of arguments.  If the words
-of \fIsrcCmd\fR were ``\fIsrcCmd arg1 arg2 ... argN\fR'',
+of \fIsrcCmd\fR were
+.QW "\fIsrcCmd arg1 arg2 ... argN\fR" ,
 the new set of words will be
-``\fItargetCmd arg arg ... arg arg1 arg2 ... argN\fR'',
+.QW "\fItargetCmd arg arg ... arg arg1 arg2 ... argN\fR" ,
 where \fItargetCmd\fR and \fIarg\fRs are the values supplied when the
 alias was created.  \fITargetCmd\fR is then used to locate a command
 procedure in the target interpreter, and that command procedure
@@ -540,7 +642,6 @@ evaluated or substituted, since this would provide an escape
 mechanism whereby the slave interpreter could execute arbitrary
 code in the master.  This in turn would compromise the security
 of the system.
-.VS
 .SH "HIDDEN COMMANDS"
 .PP
 Safe interpreters greatly restrict the functionality available to Tcl
@@ -608,10 +709,108 @@ Commands to be hidden by \fBinterp hide\fR are looked up in the global
 namespace even if the current namespace is not the global one. This
 prevents slaves from fooling a master interpreter into hiding the wrong
 command, by making the current namespace be different from the global one.
-.VE
-.SH CREDITS
+.SH "RESOURCE LIMITS"
+.VS 8.5
 .PP
-This mechanism is based on the Safe-Tcl prototype implemented
+Every interpreter has two kinds of resource limits that may be imposed by any
+master interpreter upon its slaves. Command limits (of type \fBcommand\fR)
+restrict the total number of Tcl commands that may be executed by an
+interpreter (as can be inspected via the \fBinfo cmdcount\fR command), and
+time limits (of type \fBtime\fR) place a limit by which execution within the
+interpreter must complete. Note that time limits are expressed as
+\fIabsolute\fR times (as in \fBclock seconds\fR) and not relative times (as in
+\fBafter\fR) because they may be modified after creation.
+.PP
+When a limit is exceeded for an interpreter, first any handler callbacks
+defined by master interpreters are called. If those callbacks increase or
+remove the limit, execution within the (previously) limited interpreter
+continues. If the limit is still in force, an error is generated at that point
+and normal processing of errors within the interpreter (by the \fBcatch\fR
+command) is disabled, so the error propagates outwards (building a stack-trace
+as it goes) to the point where the limited interpreter was invoked (e.g. by
+\fBinterp eval\fR) where it becomes the responsibility of the calling code to
+catch and handle.
+.SS "LIMIT OPTIONS"
+.PP
+Every limit has a number of options associated with it, some of which are
+common across all kinds of limits, and others of which are particular to the
+kind of limit.
+.VE 8.5
+.TP
+\fB\-command\fR
+.VS 8.5
+This option (common for all limit types) specifies (if non-empty) a Tcl script
+to be executed in the global namespace of the interpreter reading and writing
+the option when the particular limit in the limited interpreter is exceeded.
+The callback may modify the limit on the interpreter if it wishes the limited
+interpreter to continue executing. If the callback generates an error, it is
+reported through the background error mechanism (see \fBBACKGROUND ERROR
+HANDLING\fR). Note that the callbacks defined by one interpreter are
+completely isolated from the callbacks defined by another, and that the order
+in which those callbacks are called is undefined.
+.VE 8.5
+.TP
+\fB\-granularity\fR
+.VS 8.5
+This option (common for all limit types) specifies how frequently (out of the
+points when the Tcl interpreter is in a consistent state where limit checking
+is possible) that the limit is actually checked. This allows the tuning of how
+frequently a limit is checked, and hence how often the limit-checking overhead
+(which may be substantial in the case of time limits) is incurred.
+.VE 8.5
+.TP
+\fB\-milliseconds\fR
+.VS 8.5
+This option specifies the number of milliseconds after the moment defined in
+the \fB\-seconds\fR option that the time limit will fire. It should only ever
+be specified in conjunction with the \fB\-seconds\fR option (whether it was
+set previously or is being set this invocation.)
+.VE 8.5
+.TP
+\fB\-seconds\fR
+.VS 8.5
+This option specifies the number of seconds after the epoch (see \fBclock
+seconds\fR) that the time limit for the interpreter will be triggered. The
+limit will be triggered at the start of the second unless specified at a
+sub-second level using the \fB\-milliseconds\fR option. This option may be the
+empty string, which indicates that a time limit is not set for the
+interpreter.
+.VE 8.5
+.TP
+\fB\-value\fR
+.VS 8.5
+This option specifies the number of commands that the interpreter may execute
+before triggering the command limit. This option may be the empty string,
+which indicates that a command limit is not set for the interpreter.
+.PP
+Where an interpreter with a resource limit set on it creates a slave
+interpreter, that slave interpreter will have resource limits imposed on it
+that are at least as restrictive as the limits on the creating master
+interpreter. If the master interpreter of the limited master wishes to relax
+these conditions, it should hide the \fBinterp\fR command in the child and
+then use aliases and the \fBinterp invokehidden\fR subcommand to provide such
+access as it chooses to the \fBinterp\fR command to the limited master as
+necessary.
+.SH "BACKGROUND ERROR HANDLING"
+.PP
+When an error happens in a situation where it cannot be reported directly up
+the stack (e.g. when processing events in an \fBupdate\fR or \fBvwait\fR call)
+the error is instead reported through the background error handling mechanism.
+Every interpreter has a background error handler registered; the default error
+handler arranges for the \fBbgerror\fR command in the interpreter's global
+namespace to be called, but other error handlers may be installed and process
+background errors in substantially different ways.
+.PP
+A background error handler consists of a non-empty list of words to which will
+be appended two further words at invocation time. The first word will be the
+error message string, and the second will a dictionary of return options (this
+is also the sort of information that can be obtained by trapping a normal
+error using \fBcatch\fR of course.) The resulting list will then be executed
+in the interpreter's global namespace without further substitutions being
+performed.
+.VE 8.5
+.SH CREDITS
+The safe interpreter mechanism is based on the Safe-Tcl prototype implemented
 by Nathaniel Borenstein and Marshall Rose.
 .SH EXAMPLES
 Creating and using an alias for a command in the current interpreter:
@@ -621,22 +820,33 @@ set idx [getIndex delta]
 .CE
 .PP
 Executing an arbitrary command in a safe interpreter where every
-invokation of \fBlappend\fR is logged:
+invocation of \fBlappend\fR is logged:
 .CS
 set i [\fBinterp create\fR -safe]
 \fBinterp hide\fR $i lappend
 \fBinterp alias\fR $i lappend {} loggedLappend $i
 proc loggedLappend {i args} {
-   puts "logged invokation of lappend $args"
-   # Be extremely careful about command construction
-   eval [linsert $args 0 \\
-         \fBinterp invokehidden\fR $i lappend]
+   puts "logged invocation of lappend $args"
+   \fBinterp invokehidden\fR $i lappend {*}$args
 }
 \fBinterp eval\fR $i $someUntrustedScript
 .CE
-
+.PP
+.VS 8.5
+Setting a resource limit on an interpreter so that an infinite loop
+terminates.
+.CS
+set i [\fBinterp create\fR]
+\fBinterp limit\fR $i command -value 1000
+\fBinterp eval\fR $i {
+   set x 0
+   while {1} {
+      puts "Counting up... [incr x]"
+   }
+}
+.CE
+.VE 8.5
 .SH "SEE ALSO"
-load(n), safe(n), Tcl_CreateSlave(3)
-
+bgerror(n), load(n), safe(n), Tcl_CreateSlave(3)
 .SH KEYWORDS
 alias, master interpreter, safe interpreter, slave interpreter
diff --git a/doc/join.n b/doc/join.n
index f28c07c..582b730 100644
--- a/doc/join.n
+++ b/doc/join.n
@@ -27,14 +27,14 @@ Making a comma-separated list:
 .CS
 set data {1 2 3 4 5}
 \fBjoin\fR $data ", "
-     \fB=> 1, 2, 3, 4, 5\fR
+     \fB\(-> 1, 2, 3, 4, 5\fR
 .CE
 .PP
 Using \fBjoin\fR to flatten a list by a single level:
 .CS
 set data {1 {2 3} 4 {5 {6 7} 8}}
 \fBjoin\fR $data
-     \fB=> 1 2 3 4 5 {6 7} 8\fR
+     \fB\(-> 1 2 3 4 5 {6 7} 8\fR
 .CE
 
 .SH "SEE ALSO"
diff --git a/doc/lappend.n b/doc/lappend.n
index cb5d7fa..dbed3bb 100644
--- a/doc/lappend.n
+++ b/doc/lappend.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -21,14 +21,16 @@ lappend \- Append list elements onto a variable
 This command treats the variable given by \fIvarName\fR as a list
 and appends each of the \fIvalue\fR arguments to that list as a separate
 element, with spaces between elements.
-If \fIvarName\fR doesn't exist, it is created as a list with elements
+If \fIvarName\fR does not exist, it is created as a list with elements
 given by the \fIvalue\fR arguments.
 \fBLappend\fR is similar to \fBappend\fR except that the \fIvalue\fRs
 are appended as list elements rather than raw text.
 This command provides a relatively efficient way to build up
-large lists.  For example, ``\fBlappend a $b\fR'' is much
-more efficient than ``\fBset a [concat $a [list $b]]\fR'' when
-\fB$a\fR is long.
+large lists.  For example,
+.QW "\fBlappend a $b\fR"
+is much more efficient than
+.QW "\fBset a [concat $a [list $b]]\fR"
+when \fB$a\fR is long.
 .SH EXAMPLE
 Using \fBlappend\fR to build up a list of numbers.
 .CS
@@ -41,10 +43,7 @@ Using \fBlappend\fR to build up a list of numbers.
 .CE
 
 .SH "SEE ALSO"
-list(n), lindex(n), linsert(n), llength(n), 
-.VS 8.4
-lset(n)
-.VE
+list(n), lindex(n), linsert(n), llength(n), lset(n),
 lsort(n), lrange(n)
 
 .SH KEYWORDS
diff --git a/doc/lassign.n b/doc/lassign.n
new file mode 100644
index 0000000..b791feb
--- /dev/null
+++ b/doc/lassign.n
@@ -0,0 +1,55 @@
+'\"
+'\" Copyright (c) 1992-1999 Karl Lehenbauer & Mark Diekhans
+'\" Copyright (c) 2004 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH lassign n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+lassign \- Assign list elements to variables
+.SH SYNOPSIS
+\fBlassign \fIlist varName \fR?\fIvarName ...\fR?
+.BE
+
+.SH DESCRIPTION
+.PP
+This command treats the value \fIlist\fR as a list and assigns
+successive elements from that list to the variables given by the
+\fIvarName\fR arguments in order.  If there are more variable names
+than list elements, the remaining variables are set to the empty
+string.  If there are more list elements than variables, a list of
+unassigned elements is returned.
+.SH EXAMPLES
+An illustration of how multiple assignment works, and what happens
+when there are either too few or too many elements.
+.CS
+lassign {a b c} x y z       ;# Empty return
+puts $x                     ;# Prints "a"
+puts $y                     ;# Prints "b"
+puts $z                     ;# Prints "c"
+
+lassign {d e} x y z         ;# Empty return
+puts $x                     ;# Prints "d"
+puts $y                     ;# Prints "e"
+puts $z                     ;# Prints ""
+
+lassign {f g h i} x y       ;# Returns "h i"
+puts $x                     ;# Prints "f"
+puts $y                     ;# Prints "g"
+.CE
+The \fBlassign\fR command has other uses.  It can be used to create
+the analogue of the
+.QW shift
+command in many shell languages like this:
+.CS
+set ::argv [lassign $::argv argumentToReadOff]
+.CE
+.SH "SEE ALSO"
+lindex(n), list(n), lset(n), set(n)
+
+.SH KEYWORDS
+assign, element, list, multiple, set, variable
diff --git a/doc/library.n b/doc/library.n
index 67b1037..f29af8b 100644
--- a/doc/library.n
+++ b/doc/library.n
@@ -21,15 +21,12 @@ auto_execok, auto_import, auto_load, auto_mkindex, auto_mkindex_old, auto_qualif
 \fBauto_reset\fR
 \fBtcl_findLibrary \fIbasename version patch initScript enVarName varName\fR
 \fBparray \fIarrayName\fR
-.VS
 \fBtcl_endOfWord \fIstr start\fR
 \fBtcl_startOfNextWord \fIstr start\fR
 \fBtcl_startOfPreviousWord \fIstr start\fR
 \fBtcl_wordBreakAfter \fIstr start\fR
 \fBtcl_wordBreakBefore \fIstr start\fR
-.VE
 .BE
-
 .SH INTRODUCTION
 .PP
 Tcl includes a library of Tcl procedures for commonly-needed functions.
@@ -55,7 +52,6 @@ If the library procedure \fBTcl_Init\fR is invoked from an application's
 The code in \fBinit.tcl\fR will define the \fBunknown\fR procedure
 and arrange for the other procedures to be loaded on-demand using
 the auto-load mechanism defined below.
-
 .SH "COMMAND PROCEDURES"
 .PP
 The following procedures are provided in the Tcl library:
@@ -68,7 +64,7 @@ named by \fIcmd\fR.  If not, it returns an empty string.  This command
 examines the directories in the current search path (given by the PATH
 environment variable) in its search for an executable file named
 \fIcmd\fR.  On Windows platforms, the search is expanded with the same
-directories and file extensions as used by \fBexec\fR. \fBAuto_exec\fR
+directories and file extensions as used by \fBexec\fR. \fBAuto_execok\fR
 remembers information about previous searches in an array named
 \fBauto_execs\fR;  this avoids the path search in future calls for the
 same \fIcmd\fR.  The command \fBauto_reset\fR may be used to force
@@ -98,7 +94,7 @@ with the \fBauto_mkindex\fR command.  If \fIcmd\fR is found in an
 index file, then the appropriate script is evaluated to create the
 command.  The \fBauto_load\fR command returns 1 if \fIcmd\fR was
 successfully created.  The command returns 0 if there was no index
-entry for \fIcmd\fR or if the script didn't actually define \fIcmd\fR
+entry for \fIcmd\fR or if the script did not actually define \fIcmd\fR
 (e.g. because index information is out of date).  If an error occurs
 while processing the script, then that error is returned.
 \fBAuto_load\fR only reads the index information once and saves it in
@@ -136,9 +132,11 @@ unsophisticated way:  if any line contains the word \fBproc\fR
 as its first characters then it is assumed to be a procedure
 definition and the next word of the line is taken as the
 procedure's name.
-Procedure definitions that don't appear in this way (e.g. they
+Procedure definitions that do not appear in this way (e.g. they
 have spaces before the \fBproc\fR) will not be indexed.  If your 
-script contains "dangerous" code, such as global initialization
+script contains
+.QW dangerous
+code, such as global initialization
 code or procedure names with special characters like \fB$\fR,
 \fB*\fR, \fB[\fR or \fB]\fR, you are safer using auto_mkindex_old.
 .RE
@@ -148,7 +146,7 @@ Destroys all the information cached by \fBauto_execok\fR and
 \fBauto_load\fR.  This information will be re-read from disk the next
 time it is needed.  \fBAuto_reset\fR also deletes any procedures
 listed in the auto-load index, so that fresh copies of them will be
-loaded the next time that they're used.
+loaded the next time that they are used.
 .TP
 \fBauto_qualify \fIcommand namespace\fR
 Computes a list of fully qualified names for \fIcommand\fR.  This list
@@ -174,18 +172,20 @@ This is a standard search procedure for use by extensions during
 their initialization.  They call this procedure to look for their
 script library in several standard directories.
 The last component of the name of the library directory is 
-normally \fIbasenameversion\fP
-(e.g., tk8.0), but it might be "library" when in the build hierarchies.
+normally \fIbasenameversion\fR
+(e.g., tk8.0), but it might be
+.QW library
+when in the build hierarchies.
 The \fIinitScript\fR file will be sourced into the interpreter
 once it is found.  The directory in which this file is found is
-stored into the global variable \fIvarName\fP.
+stored into the global variable \fIvarName\fR.
 If this variable is already defined (e.g., by C code during
 application initialization) then no searching is done.
 Otherwise the search looks in these directories:
-the directory named by the environment variable \fIenVarName\fP;
+the directory named by the environment variable \fIenVarName\fR;
 relative to the Tcl library directory;
 relative to the executable file in the standard installation
-bin or bin/\fIarch\fP directory;
+bin or bin/\fIarch\fR directory;
 relative to the executable file in the current build tree;
 relative to the executable file in a parallel build tree.
 .TP
@@ -196,7 +196,6 @@ in the array \fIarrayName\fR.
 It may be either local or global.
 .TP
 \fBtcl_endOfWord \fIstr start\fR
-.VS
 Returns the index of the first end-of-word location that occurs after
 a starting index \fIstart\fR in the string \fIstr\fR.  An end-of-word
 location is defined to be the first non-word character following the
@@ -232,8 +231,6 @@ Returns the index of the first word boundary before the starting index
 boundaries before the starting point in the given string.  The index
 returned refers to the second character of the pair that comprises a
 boundary.
-.VE
-
 .SH "VARIABLES"
 .PP
 The following global variables are defined or used by the procedures in
@@ -268,17 +265,18 @@ the directories listed in the $tcl_pkgPath variable.
 If set, then it specifies the location of the directory containing
 library scripts (the value of this variable will be
 assigned to the \fBtcl_library\fR variable and therefore returned by
-the command \fBinfo library\fR).  If this variable isn't set then
+the command \fBinfo library\fR).  If this variable is not set then
 a default value is used.
 .TP
 \fBenv(TCLLIBPATH)\fR
 If set, then it must contain a valid Tcl list giving directories to
 search during auto-load operations.  Directories must be specified in 
-Tcl format, using "/" as the path separator, regardless of platform.
+Tcl format, using
+.QW /
+as the path separator, regardless of platform.
 This variable is only used when initializing the \fBauto_path\fR variable.
 .TP
 \fBtcl_nonwordchars\fR
-.VS
 This variable contains a regular expression that is used by routines
 like \fBtcl_endOfWord\fR to identify whether a character is part of a
 word or not.  If the pattern matches a character, the character is
@@ -294,17 +292,7 @@ word or not.  If the pattern matches a character, the character is
 considered to be a word character.  On Windows platforms, words are
 comprised of any character that is not a space, tab, or newline.  Under
 Unix, words are comprised of numbers, letters or underscores.
-.VE
-.TP
-\fBunknown_pending\fR
-Used by \fBunknown\fR to record the command(s) for which it is
-searching.
-It is used to detect errors where \fBunknown\fR recurses on itself
-infinitely.
-The variable is unset before \fBunknown\fR returns.
-
 .SH "SEE ALSO"
 info(n), re_syntax(n)
-
 .SH KEYWORDS
 auto-exec, auto-load, library, unknown, word, whitespace 
diff --git a/doc/lindex.n b/doc/lindex.n
index a12fdcf..f0417ac 100644
--- a/doc/lindex.n
+++ b/doc/lindex.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 by Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -17,9 +17,8 @@ lindex \- Retrieve an element from a list
 .BE
 .SH DESCRIPTION
 .PP
-.VS 8.4
-The \fBlindex\fP command accepts a parameter, \fIlist\fP, which
-it treats as a Tcl list. It also accepts zero or more \fIindices\fP into
+The \fBlindex\fR command accepts a parameter, \fIlist\fR, which
+it treats as a Tcl list. It also accepts zero or more \fIindices\fR into
 the list.  The indices may be presented either consecutively on the
 command line, or grouped in a
 Tcl list and presented as a single argument.
@@ -37,7 +36,6 @@ In this case, the return value of \fBlindex\fR is simply the value of the
 .PP
 When presented with a single index, the \fBlindex\fR command
 treats \fIlist\fR as a Tcl list and returns the
-.VE
 \fIindex\fR'th element from it (0 refers to the first element of the list).
 In extracting the element, \fBlindex\fR observes the same rules
 concerning braces and quotes and backslashes as the Tcl command
@@ -46,11 +44,12 @@ substitution and command substitution do not occur.
 If \fIindex\fR is negative or greater than or equal to the number
 of elements in \fIvalue\fR, then an empty
 string is returned.
-If \fIindex\fR has the value \fBend\fR, it refers to the last element
-in the list, and \fBend\-\fIinteger\fR refers to the last element in
-the list minus the specified integer offset.
+.VS 8.5
+The interpretation of each simple \fIindex\fR value is the same as 
+for the command \fBstring index\fR, supporting simple index
+arithmetic and indices relative to the end of the list.
+.VE 8.5
 .PP
-.VS 8.4
 If additional \fIindex\fR arguments are supplied, then each argument is
 used in turn to select an element from the previous indexing operation,
 allowing the script to select elements from sublists.  The command,
@@ -67,25 +66,33 @@ lindex [lindex [lindex $a 1] 2] 3
 .CE
 .SH EXAMPLES
 .CS
-\fBlindex\fR {a b c}  \fI=> a b c\fR
-\fBlindex\fR {a b c} {} \fI=> a b c\fR
-\fBlindex\fR {a b c} 0 \fI=> a\fR
-\fBlindex\fR {a b c} 2 \fI=> c\fR
-\fBlindex\fR {a b c} end \fI=> c\fR
-\fBlindex\fR {a b c} end-1 \fI=> b\fR
-\fBlindex\fR {{a b c} {d e f} {g h i}} 2 1 \fI=> h\fR
-\fBlindex\fR {{a b c} {d e f} {g h i}} {2 1} \fI=> h\fR
-\fBlindex\fR {{{a b} {c d}} {{e f} {g h}}} 1 1 0 \fI=> g\fR
-\fBlindex\fR {{{a b} {c d}} {{e f} {g h}}} {1 1 0} \fI=> g\fR
+\fBlindex\fR {a b c}
+      \fI\(-> a b c\fR
+\fBlindex\fR {a b c} {}
+      \fI\(-> a b c\fR
+\fBlindex\fR {a b c} 0
+      \fI\(-> a\fR
+\fBlindex\fR {a b c} 2
+      \fI\(-> c\fR
+\fBlindex\fR {a b c} end
+      \fI\(-> c\fR
+\fBlindex\fR {a b c} end-1
+      \fI\(-> b\fR
+\fBlindex\fR {{a b c} {d e f} {g h i}} 2 1
+      \fI\(-> h\fR
+\fBlindex\fR {{a b c} {d e f} {g h i}} {2 1}
+      \fI\(-> h\fR
+\fBlindex\fR {{{a b} {c d}} {{e f} {g h}}} 1 1 0
+      \fI\(-> g\fR
+\fBlindex\fR {{{a b} {c d}} {{e f} {g h}}} {1 1 0}
+      \fI\(-> g\fR
 .CE
-.VE
 .SH "SEE ALSO"
 list(n), lappend(n), linsert(n), llength(n), lsearch(n), 
-.VS 8.4
-lset(n),
+lset(n), lsort(n), lrange(n), lreplace(n),
+.VS 8.5
+string(n)
 .VE
-lsort(n),
-lrange(n), lreplace(n)
 
 .SH KEYWORDS
 element, index, list
diff --git a/doc/linsert.n b/doc/linsert.n
index 7b85adb..9f37fcd 100644
--- a/doc/linsert.n
+++ b/doc/linsert.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -22,11 +22,12 @@ This command produces a new list from \fIlist\fR by inserting all of the
 \fIelement\fR arguments just before the \fIindex\fR'th element of
 \fIlist\fR.  Each \fIelement\fR argument will become a separate element of
 the new list.  If \fIindex\fR is less than or equal to zero, then the new
-elements are inserted at the beginning of the list.  If \fIindex\fR has the
-value \fBend\fR, or if it is greater than or equal to the number of
-elements in the list, then the new elements are appended to the list.
-\fBend\-\fIinteger\fR refers to the last element in the list minus the
-specified integer offset.
+elements are inserted at the beginning of the list.  
+.VS 8.5
+The interpretation of the \fIindex\fR value is the same as
+for the command \fBstring index\fR, supporting simple index
+arithmetic and indices relative to the end of the list.
+.VE
 .SH EXAMPLE
 Putting some values into a list, first indexing from the start and
 then indexing from the end, and then chaining them together:
@@ -39,9 +40,10 @@ set newerList [\fBlinsert\fR [\fBlinsert\fR $oldList end-1 quick] 1 lazy]
 .CE
 
 .SH "SEE ALSO"
-.VS 8.4
 list(n), lappend(n), lindex(n), llength(n), lsearch(n), 
-lset(n), lsort(n), lrange(n), lreplace(n)
+lset(n), lsort(n), lrange(n), lreplace(n),
+.VS 8.5
+string(n)
 .VE
 
 .SH KEYWORDS
diff --git a/doc/list.n b/doc/list.n
index 21f9edb..2bcdafb 100644
--- a/doc/list.n
+++ b/doc/list.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -43,11 +43,10 @@ while \fBconcat\fR with the same arguments will return
 
 .SH "SEE ALSO"
 lappend(n), lindex(n), linsert(n), llength(n), lrange(n),
-lreplace(n), lsearch(n),
-.VS 8.4
-lset(n),
-.VE 8.4
-lsort(n)
+.VS 8.5
+lrepeat(n),
+.VE 8.5
+lreplace(n), lsearch(n), lset(n), lsort(n)
 
 .SH KEYWORDS
 element, list
diff --git a/doc/llength.n b/doc/llength.n
index 977d9ef..627800f 100644
--- a/doc/llength.n
+++ b/doc/llength.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -48,10 +48,8 @@ An empty list is not necessarily an empty string:
 .CE
 
 .SH "SEE ALSO"
-.VS 8.4
 list(n), lappend(n), lindex(n), linsert(n), lsearch(n), 
 lset(n), lsort(n), lrange(n), lreplace(n)
-.VE
 
 .SH KEYWORDS
 element, list, length
diff --git a/doc/load.n b/doc/load.n
index 02fec35..e5501f6 100644
--- a/doc/load.n
+++ b/doc/load.n
@@ -9,7 +9,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-load \- Load machine code and initialize new commands.
+load \- Load machine code and initialize new commands
 .SH SYNOPSIS
 \fBload \fIfileName\fR
 .br
@@ -71,7 +71,12 @@ in an application.  If a given \fIfileName\fR is loaded into multiple
 interpreters, then the first \fBload\fR will load the code and
 call the initialization procedure;  subsequent \fBload\fRs will
 call the initialization procedure without loading the code again.
-It is not possible to unload or reload a package.
+.VS 8.5
+For Tcl versions lower than 8.5, it is not possible to unload or reload a
+package. From version 8.5 however, the \fBunload\fR command allows the unloading
+of libraries loaded with \fBload\fR, for libraries that are aware of the
+Tcl's unloading mechanism.
+.VE 8.5
 .PP
 The \fBload\fR command also supports packages that are statically
 linked with the application, if those packages have been registered
@@ -85,13 +90,10 @@ This may be done differently on different platforms.
 The default guess, which is used on most UNIX platforms, is to
 take the last element of \fIfileName\fR, strip off the first
 three characters if they are \fBlib\fR, and use any following
-.VS
 alphabetic and underline characters as the module name.
-.VE
 For example, the command \fBload libxyz4.2.so\fR uses the module
 name \fBxyz\fR and the command \fBload bin/last.so {}\fR uses the
 module name \fBlast\fR.
-.VS "" br
 .PP
 If \fIfileName\fR is an empty string, then \fIpackageName\fR must
 be specified.
@@ -102,17 +104,20 @@ Otherwise, the \fBload\fR command searches for a dynamically loaded
 package by that name, and uses it if it is found.  If several
 different files have been \fBload\fRed with different versions of
 the package, Tcl picks the file that was loaded first.
-.VE
 .SH "PORTABILITY ISSUES"
 .TP
 \fBWindows\fR\0\0\0\0\0
 .
-When a load fails with "library not found" error, it is also possible
+When a load fails with
+.QW "library not found"
+error, it is also possible
 that a dependent library was not found.  To see the dependent libraries,
-type ``dumpbin -imports <dllname>'' in a DOS console to see what the
-library must import.
-When loading a DLL in the current directory, Windows will ignore ``./'' as
-a path specifier and use a search heuristic to find the DLL instead.
+type
+.QW "dumpbin -imports <dllname>"
+in a DOS console to see what the library must import.
+When loading a DLL in the current directory, Windows will ignore
+.QW ./
+as a path specifier and use a search heuristic to find the DLL instead.
 To avoid this, load the DLL with:
 .CS
 \fBload\fR [file join [pwd] mylib.DLL]
@@ -131,7 +136,7 @@ The following is a minimal extension:
 #include <stdio.h>
 static int fooCmd(ClientData clientData,
         Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
-    printf("called with %d arguments\\n", objc);
+    printf("called with %d arguments\en", objc);
     return TCL_OK;
 }
 int Foo_Init(Tcl_Interp *interp) {
diff --git a/doc/lrange.n b/doc/lrange.n
index 5b0d187..34f0150 100644
--- a/doc/lrange.n
+++ b/doc/lrange.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -21,18 +21,24 @@ lrange \- Return one or more adjacent elements from a list
 \fIList\fR must be a valid Tcl list.  This command will
 return a new list consisting of elements
 \fIfirst\fR through \fIlast\fR, inclusive.
-\fIFirst\fR or \fIlast\fR
-may be \fBend\fR (or any abbreviation of it) to refer to the last
-element of the list.
+.VS 8.5
+The index values \fIfirst\fR and \fIlast\fR are interpreted
+the same as index values for the command \fBstring index\fR,
+supporting simple index arithmetic and indices relative to the
+end of the list.
+.VE
 If \fIfirst\fR is less than zero, it is treated as if it were zero.
 If \fIlast\fR is greater than or equal to the number of elements
 in the list, then it is treated as if it were \fBend\fR.
 If \fIfirst\fR is greater than \fIlast\fR then an empty string
 is returned.
-Note: ``\fBlrange \fIlist first first\fR'' does not always produce the
-same result as ``\fBlindex \fIlist first\fR'' (although it often does
-for simple fields that aren't enclosed in braces); it does, however,
-produce exactly the same results as ``\fBlist [lindex \fIlist first\fB]\fR''
+Note:
+.QW "\fBlrange \fIlist first first\fR"
+does not always produce the same result as
+.QW "\fBlindex \fIlist first\fR"
+(although it often does for simple fields that are not enclosed in
+braces); it does, however, produce exactly the same results as
+.QW "\fBlist [lindex \fIlist first\fB]\fR"
 .SH EXAMPLES
 Selecting the first two elements:
 .CS
@@ -64,9 +70,10 @@ elements to
 .CE
 
 .SH "SEE ALSO"
-.VS 8.4
 list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), 
-lset(n), lreplace(n), lsort(n)
+lset(n), lreplace(n), lsort(n),
+.VS 8.5
+string(n)
 .VE
 
 .SH KEYWORDS
diff --git a/doc/lrepeat.n b/doc/lrepeat.n
new file mode 100644
index 0000000..ac78690
--- /dev/null
+++ b/doc/lrepeat.n
@@ -0,0 +1,39 @@
+'\"
+'\" Copyright (c) 2003 by Simon Geard.  All rights reserved.
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH lrepeat n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+lrepeat \- Build a list by repeating elements
+.SH SYNOPSIS
+\fBlrepeat \fInumber element1 \fR?\fIelement2 element3 ...\fR?
+.BE
+.SH DESCRIPTION
+.PP
+The \fBlrepeat\fR command creates a list of size \fInumber * number of
+elements\fR by repeating \fInumber\fR times the sequence of elements
+\fIelement1 element2 ...\fR.  \fInumber\fR must be a positive integer,
+\fIelementn\fR can be any Tcl value.  Note that \fBlrepeat 1 arg ...\fR
+is identical to \fBlist arg ...\fR, though the \fIarg\fR is required
+with \fBlrepeat\fR.
+.SH EXAMPLES
+.CS
+\fBlrepeat\fR 3 a
+      \fI\(-> a a a\fR
+\fBlrepeat\fR 3 [\fBlrepeat\fR 3 0]
+      \fI\(-> {0 0 0} {0 0 0} {0 0 0}\fR
+\fBlrepeat\fR 3 a b c
+      \fI\(-> a b c a b c a b c\fR
+\fBlrepeat\fR 3 [\fBlrepeat\fR 2 a] b c
+      \fI\(-> {a a} b c {a a} b c {a a} b c\fR
+.CE
+.SH "SEE ALSO"
+list(n), lappend(n), linsert(n), llength(n), lset(n)
+
+.SH KEYWORDS
+element, index, list
diff --git a/doc/lreplace.n b/doc/lreplace.n
index 600a986..2cd79d8 100644
--- a/doc/lreplace.n
+++ b/doc/lreplace.n
@@ -1,7 +1,7 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -15,26 +15,31 @@ lreplace \- Replace elements in a list with new elements
 .SH SYNOPSIS
 \fBlreplace \fIlist first last \fR?\fIelement element ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 \fBlreplace\fR returns a new list formed by replacing one or more elements of
 \fIlist\fR with the \fIelement\fR arguments.
-\fIfirst\fR and \fIlast\fR specify the first and last index of the
-range of elements to replace.  0 refers to the first element of the
-list, and \fBend\fR (or any abbreviation of it) may be used to refer
-to the last element of the list.  If \fIlist\fR is empty, then
-\fIfirst\fR and \fIlast\fR are ignored.
-
-If \fIfirst\fR is less than zero, it is considered to refer to the
+.VS 8.5
+\fIfirst\fR and \fIlast\fR are index values specifying the first and
+last elements of the range to replace.
+The index values \fIfirst\fR and \fIlast\fR are interpreted
+the same as index values for the command \fBstring index\fR,
+supporting simple index arithmetic and indices relative to the
+end of the list.
+0 refers to the first element of the
+list, and \fBend\fR refers to the last element of the list.
+If \fIlist\fR is empty, then \fIfirst\fR and \fIlast\fR are ignored.
+.VE
+.PP
+If \fIfirst\fR is less than zero, it is considered to refer to before the
 first element of the list.  For non-empty lists, the element indicated
-by \fIfirst\fR must exist.
-
-If \fIlast\fR is less than zero but greater than \fIfirst\fR, then any
-specified elements will be prepended to the list.  If \fIlast\fR is
-less than \fIfirst\fR then no elements are deleted; the new elements
-are simply inserted before \fIfirst\fR.
-
+by \fIfirst\fR must exist or \fIfirst\fR must indicate before the
+start of the list.
+.PP
+If \fIlast\fR is less than \fIfirst\fR, then any specified elements
+will be inserted into the list at the point specified by \fIfirst\fR
+with no elements being deleted.
+.PP
 The \fIelement\fR arguments specify zero or more new arguments to
 be added to the list in place of those that were deleted.
 Each \fIelement\fR argument will become a separate element of
@@ -61,12 +66,20 @@ a b c d e
 % set var [\fBlreplace\fR $var end end]
 a b c d
 .CE
-
+.PP
+A procedure to delete a given element from a list:
+.CS
+proc lremove {listVariable value} {
+    upvar 1 $listVariable var
+    set idx [lsearch -exact $var $value]
+    set var [\fBlreplace\fR $var $idx $idx]
+}
+.CE
 .SH "SEE ALSO"
-.VS 8.4
-list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), 
-lset(n), lrange(n), lsort(n)
+list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n),
+lset(n), lrange(n), lsort(n),
+.VS 8.5
+string(n)
 .VE
-
 .SH KEYWORDS
 element, list, replace
diff --git a/doc/lreverse.n b/doc/lreverse.n
new file mode 100644
index 0000000..da5e489
--- /dev/null
+++ b/doc/lreverse.n
@@ -0,0 +1,31 @@
+'\" -*- nroff -*-
+'\" Copyright (c) 2006 by Donal K. Fellows.  All rights reserved.
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH lreverse n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+lreverse \- Reverse the order of a list
+.SH SYNOPSIS
+\fBlreverse \fIlist\fR
+.BE
+.SH DESCRIPTION
+.PP
+The \fBlreverse\fR command returns a list that has the same elements as its
+input list, \fIlist\fR, except with the elements in the reverse order.
+.SH EXAMPLES
+.CS
+\fBlreverse\fR {a a b c}
+      \fI\(-> c b a a\fR
+\fBlreverse\fR {a b {c d} e f}
+      \fI\(-> f e {c d} b a\fR
+.CE
+.SH "SEE ALSO"
+list(n), lsearch(n), lsort(n)
+
+.SH KEYWORDS
+element, list, reverse
diff --git a/doc/lsearch.n b/doc/lsearch.n
index 37362fa..b046ba2 100644
--- a/doc/lsearch.n
+++ b/doc/lsearch.n
@@ -1,13 +1,14 @@
 '\" 
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
+'\" Copyright (c) 2003-2004 Donal K. Fellows.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH lsearch n 8.4 Tcl "Tcl Built-In Commands"
+.TH lsearch n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
@@ -21,121 +22,169 @@ lsearch \- See if a list contains a particular element
 This command searches the elements of \fIlist\fR to see if one
 of them matches \fIpattern\fR.  If so, the command returns the index
 of the first matching element
-.VS 8.4
 (unless the options \fB\-all\fR or \fB\-inline\fR are specified.)
-.VE 8.4
 If not, the command returns \fB\-1\fR.  The \fIoption\fR arguments
 indicates how the elements of the list are to be matched against
-\fIpattern\fR and it must have one of the following values:
-.TP
-\fB\-all\fR
-.VS 8.4
-Changes the result to be the list of all matching indices (or all
-matching values if \fB\-inline\fR is specified as well.)
-.VE 8.4
-.TP
-\fB\-ascii\fR
-The list elements are to be examined as Unicode strings (the name is
-for backward-compatability reasons.)  This option is only meaningful
-when used with \fB\-exact\fR or \fB\-sorted\fR.
-.TP
-\fB\-decreasing\fR
-The list elements are sorted in decreasing order.  This option is only
-meaningful when used with \fB\-sorted\fR.
-.TP
-\fB\-dictionary\fR
-The list elements are to be compared using dictionary-style
-comparisons (see \fBlsort\fR for a fuller description).  This option
-is only meaningful when used with \fB\-exact\fR or \fB\-sorted\fR, and
-it is only distinguishable from the \fB\-ascii\fR option when
-the \fB\-sorted\fR option is given, because values are only
-dictionary-equal when exactly equal.
+\fIpattern\fR and must have one of the values below:
+.SS "MATCHING STYLE OPTIONS"
+If all matching style options are omitted, the default matching style
+is \fB\-glob\fR.  If more than one matching style is specified, the
+last matching style given takes precedence.
 .TP
 \fB\-exact\fR
-The list element must contain exactly the same string as \fIpattern\fR.
+\fIPattern\fR is a literal string that is compared for exact equality
+against each list element.
 .TP
 \fB\-glob\fR
 \fIPattern\fR is a glob-style pattern which is matched against each list
 element using the same rules as the \fBstring match\fR command.
 .TP
-\fB\-increasing\fR
-The list elements are sorted in increasing order.  This option is only
-meaningful when used with \fB\-sorted\fR.
+\fB\-regexp\fR
+\fIPattern\fR is treated as a regular expression and matched against
+each list element using the rules described in the \fBre_syntax\fR
+reference page.
+.TP
+\fB\-sorted\fR
+The list elements are in sorted order.  If this option is specified,
+\fBlsearch\fR will use a more efficient searching algorithm to search
+\fIlist\fR.  If no other options are specified, \fIlist\fR is assumed
+to be sorted in increasing order, and to contain ASCII strings.  This
+option is mutually exclusive with \fB\-glob\fR and \fB\-regexp\fR, and
+is treated exactly like \fB\-exact\fR when either \fB\-all\fR or
+\fB\-not\fR are specified.
+.SS "GENERAL MODIFIER OPTIONS"
+These options may be given with all matching styles.
+.TP
+\fB\-all\fR
+.
+Changes the result to be the list of all matching indices (or all matching
+values if \fB\-inline\fR is specified as well.) If indices are returned, the
+indices will be in numeric order. If values are returned, the order of the
+values will be the order of those values within the input \fIlist\fR.
 .TP
 \fB\-inline\fR
-.VS 8.4
 The matching value is returned instead of its index (or an empty
 string if no value matches.)  If \fB\-all\fR is also specified, then
 the result of the command is the list of all values that matched.
-.VE 8.4
-.TP
-\fB\-integer\fR
-The list elements are to be compared as integers.  This option is only
-meaningful when used with \fB\-exact\fR or \fB\-sorted\fR.
 .TP
 \fB\-not\fR
-.VS 8.4
 This negates the sense of the match, returning the index of the first
 non-matching value in the list.
-.VE 8.4
+.TP
+\fB\-start\fR\0\fIindex\fR
+The list is searched starting at position \fIindex\fR.
+.VS 8.5
+The interpretation of the \fIindex\fR value is the same as
+for the command \fBstring index\fR, supporting simple index
+arithmetic and indices relative to the end of the list.
+.VE 8.5
+.SS "CONTENTS DESCRIPTION OPTIONS"
+These options describe how to interpret the items in the list being
+searched.  They are only meaningful when used with the \fB\-exact\fR
+and \fB\-sorted\fR options.  If more than one is specified, the last
+one takes precedence.  The default is \fB\-ascii\fR.
+.TP
+\fB\-ascii\fR
+The list elements are to be examined as Unicode strings (the name is
+for backward-compatibility reasons.)
+.TP
+\fB\-dictionary\fR
+The list elements are to be compared using dictionary-style
+comparisons (see \fBlsort\fR for a fuller description). Note that this
+only makes a meaningful difference from the \fB\-ascii\fR option when
+the \fB\-sorted\fR option is given, because values are only
+dictionary-equal when exactly equal.
+.TP
+\fB\-integer\fR
+The list elements are to be compared as integers.
+.VS 8.5
+.TP
+\fB\-nocase\fR
+Causes comparisons to be handled in a case-insensitive manner.  Has no
+effect if combined with the \fB\-dictionary\fR, \fB\-integer\fR, or 
+\fB\-real\fR options.
+.VE 8.5
 .TP
 \fB\-real\fR
-The list elements are to be compared as floating-point values.  This
-option is only meaningful when used with \fB\-exact\fR or \fB\-sorted\fR.
+The list elements are to be compared as floating-point values.
+.SS "SORTED LIST OPTIONS"
+These options (only meaningful with the \fB\-sorted\fR option) specify
+how the list is sorted.  If more than one is given, the last one takes
+precedence.  The default option is \fB\-increasing\fR.
 .TP
-\fB\-regexp\fR
-\fIPattern\fR is treated as a regular expression and matched against
-each list element using the rules described in the \fBre_syntax\fR
-reference page.
+\fB\-decreasing\fR
+The list elements are sorted in decreasing order.  This option is only
+meaningful when used with \fB\-sorted\fR.
 .TP
-\fB\-sorted\fR
-The list elements are in sorted order.  If this option is specified,
-\fBlsearch\fR will use a more efficient searching algorithm to search
-\fIlist\fR.  If no other options are specified, \fIlist\fR is assumed
-to be sorted in increasing order, and to contain ASCII strings.  This
-option is mutually exclusive with \fB\-glob\fR and \fB\-regexp\fR, and
-is treated exactly like \fB-exact\fR when either \fB\-all\fR, or
-\fB\-not\fR is specified.
-.TP
-\fB\-start\fR \fIindex\fR
-.VS 8.4
-The list is searched starting at position \fIindex\fR.  If \fIindex\fR
-has the value \fBend\fR, it refers to the last element in the list,
-and \fBend\-\fIinteger\fR refers to the last element in the list minus
-the specified integer offset.
-.VE 8.4
-.PP
-If \fIoption\fR is omitted then it defaults to \fB\-glob\fR.  If more
-than one of \fB\-exact\fR, \fB\-glob\fR, \fB\-regexp\fR, and
-\fB\-sorted\fR is specified, whichever option is specified last takes
-precedence.  If more than one of \fB\-ascii\fR, \fB\-dictionary\fR,
-\fB\-integer\fR and \fB\-real\fR is specified, the option specified
-last takes precedence.  If more than one of \fB\-increasing\fR and
-\fB\-decreasing\fR is specified, the option specified last takes
-precedence.
-
-.VS 8.4
+\fB\-increasing\fR
+The list elements are sorted in increasing order.  This option is only
+meaningful when used with \fB\-sorted\fR.
+.SS "NESTED LIST OPTIONS"
+.VS 8.5
+These options are used to search lists of lists.  They may be used
+with any other options.
+.TP
+\fB\-index\fR\0\fIindexList\fR
+This option is designed for use when searching within nested lists.
+The \fIindexList\fR argument gives a path of indices (much as might be
+used with the \fBlindex\fR or \fBlset\fR commands) within each element
+to allow the location of the term being matched against.
+.TP
+\fB\-subindices\fR
+If this option is given, the index result from this command (or every
+index result when \fB\-all\fR is also specified) will be a complete
+path (suitable for use with \fBlindex\fR or \fBlset\fR) within the
+overall list to the term found.  This option has no effect unless the
+\fI\-index\fR is also specified, and is just a convenience short-cut.
+.VE 8.5
 .SH EXAMPLES
+Basic searching:
 .CS
-\fBlsearch\fR {a b c d e} c \fI=> 2\fR
-\fBlsearch\fR -all {a b c a b c} c \fI=> 2 5\fR
-\fBlsearch\fR -inline {a20 b35 c47} b* \fI=> b35\fR
-\fBlsearch\fR -inline -not {a20 b35 c47} b* \fI=> a20\fR
-\fBlsearch\fR -all -inline -not {a20 b35 c47} b* \fI=> a20 c47\fR
-\fBlsearch\fR -all -not {a20 b35 c47} b* \fI=> 0 2\fR
-\fBlsearch\fR -start 3 {a b c a b c} c \fI=> 5\fR
+\fBlsearch\fR {a b c d e} c
+      \fI\(-> 2\fR
+\fBlsearch\fR -all {a b c a b c} c
+      \fI\(-> 2 5\fR
+.CE
+.PP
+Using \fBlsearch\fR to filter lists:
+.CS
+\fBlsearch\fR -inline {a20 b35 c47} b*
+      \fI\(-> b35\fR
+\fBlsearch\fR -inline -not {a20 b35 c47} b*
+      \fI\(-> a20\fR
+\fBlsearch\fR -all -inline -not {a20 b35 c47} b*
+      \fI\(-> a20 c47\fR
+\fBlsearch\fR -all -not {a20 b35 c47} b*
+      \fI\(-> 0 2\fR
+.CE
+.PP
+This can even do a
+.QW set-like
+removal operation:
+.CS
+\fBlsearch\fR -all -inline -not -exact {a b c a d e a f g a} a
+      \fI\(-> b c d e f g\fR
+.CE
+.PP
+Searching may start part-way through the list:
+.CS
+\fBlsearch\fR -start 3 {a b c a b c} c
+      \fI\(-> 5\fR
+.CE
+.PP
+It is also possible to search inside elements:
+.CS
+\fBlsearch\fR -index 1 -all -inline {{a abc} {b bcd} {c cde}} *bc*
+      \fI\(-> {a abc} {b bcd}\fR
 .CE
-.VE 8.4
-
 .SH "SEE ALSO"
-.VS 8.4
 foreach(n), list(n), lappend(n), lindex(n), linsert(n), llength(n), 
-lset(n), lsort(n), lrange(n), lreplace(n)
+lset(n), lsort(n), lrange(n), lreplace(n),
+.VS 8.5
+string(n)
 .VE
-
 .SH KEYWORDS
 list, match, pattern, regular expression, search, string
-
 '\" Local Variables:
 '\" mode: nroff
 '\" End:
diff --git a/doc/lset.n b/doc/lset.n
index 81ee225..5efcbae 100755..100644
--- a/doc/lset.n
+++ b/doc/lset.n
@@ -1,5 +1,5 @@
 '\"
-'\" Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 by Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -50,9 +50,11 @@ command.
 If \fIindex\fR is negative or greater than or equal to the number
 of elements in \fI$varName\fR, then an error occurs.
 .PP
-If \fIindex\fR has the value \fBend\fR, it refers to the last element
-in the list, and \fBend\-\fIinteger\fR refers to the last element in
-the list minus the specified integer offset.
+.VS 8.5
+The interpretation of each simple \fIindex\fR value is the same as
+for the command \fBstring index\fR, supporting simple index
+arithmetic and indices relative to the end of the list.
+.VE 8.5
 .PP
 If additional \fIindex\fR arguments are supplied, then each argument is
 used in turn to address an element within a sublist designated
@@ -76,36 +78,51 @@ of a list.  If an index is outside the permitted range, an error is reported.
 In each of these examples, the initial value of \fIx\fR is:
 .CS
 set x [list [list a b c] [list d e f] [list g h i]]
-  => {a b c} {d e f} {g h i}
+      \fI\(-> {a b c} {d e f} {g h i}\fR
 .CE
 The indicated return value also becomes the new value of \fIx\fR
 (except in the last case, which is an error which leaves the value of
 \fIx\fR unchanged.)
 .CS
-lset x {j k l} => j k l
-lset x {} {j k l} => j k l
-lset x 0 j => j {d e f} {g h i}
-lset x 2 j => {a b c} {d e f} j
-lset x end j => {a b c} {d e f} j
-lset x end-1 j => {a b c} j {g h i}
-lset x 2 1 j => {a b c} {d e f} {g j i}
-lset x {2 1} j => {a b c} {d e f} {g j i}
-lset x {2 3} j => \fIlist index out of range\fR
+\fBlset\fR x {j k l}
+      \fI\(-> j k l\fR
+\fBlset\fR x {} {j k l}
+      \fI\(-> j k l\fR
+\fBlset\fR x 0 j
+      \fI\(-> j {d e f} {g h i}\fR
+\fBlset\fR x 2 j
+      \fI\(-> {a b c} {d e f} j\fR
+\fBlset\fR x end j
+      \fI\(-> {a b c} {d e f} j\fR
+\fBlset\fR x end-1 j
+      \fI\(-> {a b c} j {g h i}\fR
+\fBlset\fR x 2 1 j
+      \fI\(-> {a b c} {d e f} {g j i}\fR
+\fBlset\fR x {2 1} j
+      \fI\(-> {a b c} {d e f} {g j i}\fR
+\fBlset\fR x {2 3} j
+      \fI\(-> list index out of range\fR
 .CE
 In the following examples, the initial value of \fIx\fR is:
 .CS
 set x [list [list [list a b] [list c d]] \e
             [list [list e f] [list g h]]]
- => {{a b} {c d}} {{e f} {g h}}
+      \fI\(-> {{a b} {c d}} {{e f} {g h}}\fR
 .CE
 The indicated return value also becomes the new value of \fIx\fR.
 .CS
-lset x 1 1 0 j => {{a b} {c d}} {{e f} {j h}}
-lset x {1 1 0} j => {{a b} {c d}} {{e f} {j h}}
+\fBlset\fR x 1 1 0 j
+      \fI\(-> {{a b} {c d}} {{e f} {j h}}\fR
+\fBlset\fR x {1 1 0} j
+      \fI\(-> {{a b} {c d}} {{e f} {j h}}\fR
 .CE
 .SH "SEE ALSO"
 list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), 
-lsort(n), lrange(n), lreplace(n)
+lsort(n), lrange(n), lreplace(n),
+.VS 8.5
+string(n)
+.VE
+
 
 .SH KEYWORDS
 element, index, list, replace, set
diff --git a/doc/lsort.n b/doc/lsort.n
index fa8cdd7..1726e92 100644
--- a/doc/lsort.n
+++ b/doc/lsort.n
@@ -2,13 +2,13 @@
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
 '\" Copyright (c) 1999 Scriptics Corporation
-'\" Copyright (c) 2001 Kevin B. Kenny.  All rights reserved.
+'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>.  All rights reserved.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH lsort n 8.3 Tcl "Tcl Built-In Commands"
+.TH lsort n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
@@ -57,47 +57,72 @@ be considered less than, equal to, or greater than the second,
 respectively.
 .TP 20
 \fB\-increasing\fR
-Sort the list in increasing order (``smallest'' items first).
+Sort the list in increasing order
+.PQ smallest "items first" .
 This is the default.
 .TP 20
 \fB\-decreasing\fR
-Sort the list in decreasing order (``largest'' items first).
+Sort the list in decreasing order
+.PQ largest "items first" .
 .TP 20
-\fB\-index\0\fIindex\fR
+\fB\-indices\fR
+.VS "8.5 (TIP#217)"
+Return a list of indices into \fIlist\fR in sorted order instead of
+the values themselves.
+.VE "8.5 (TIP#217)"
+.TP 20
+\fB\-index\0\fIindexList\fR
 If this option is specified, each of the elements of \fIlist\fR must
 itself be a proper Tcl sublist.  Instead of sorting based on whole
-sublists, \fBlsort\fR will extract the \fIindex\fR'th element from
-each sublist and sort based on the given element.  The keyword
-\fBend\fP is allowed for the \fIindex\fP to sort on the last sublist
-element,
-.VS 8.4
-and \fBend-\fIindex\fR sorts on a sublist element offset from
-the end.
-.VE
+sublists, \fBlsort\fR will extract the \fIindexList\fR'th element from
+each sublist
+.VS 8.5
+(as if the overall element and the \fIindexList\fR were passed to
+\fBlindex\fR) and sort based on the given element.  
+.VE 8.5
 For example,
 .RS
 .CS
-lsort -integer -index 1 {{First 24} {Second 18} {Third 30}}
+lsort -integer -index 1 \e
+      {{First 24} {Second 18} {Third 30}}
 .CE
 returns \fB{Second 18} {First 24} {Third 30}\fR, and
-.VS 8.4
 '\"
 '\" This example is from the test suite!
 '\"
 .CS
-lsort -index end-1 {{a 1 e i} {b 2 3 f g} {c 4 5 6 d h}}
+lsort -index end-1 \e
+      {{a 1 e i} {b 2 3 f g} {c 4 5 6 d h}}
 .CE
-returns \fB{c 4 5 6 d h} {a 1 e i} {b 2 3 f g}\fR.
-.VE
+returns \fB{c 4 5 6 d h} {a 1 e i} {b 2 3 f g}\fR,
+.VS 8.5
+and
+.CS
+lsort -index {0 1} {
+   {{b i g} 12345}
+   {{d e m o} 34512}
+   {{c o d e} 54321}
+}
+.CE
+returns \fB{{d e m o} 34512} {{b i g} 12345} {{c o d e} 54321}\fR
+(because \fBe\fR sorts before \fBi\fR which sorts before \fBo\fR.)
+.VE 8.5
 This option is much more efficient than using \fB\-command\fR
 to achieve the same effect.
 .RE
+.VS 8.5
+.TP 20
+\fB\-nocase\fR
+Causes comparisons to be handled in a case-insensitive manner.  Has no
+effect if combined with the \fB\-dictionary\fR, \fB\-integer\fR, or 
+\fB\-real\fR options.
+.VE 8.5
 .TP 20
 \fB\-unique\fR
 If this option is specified, then only the last set of duplicate
 elements found in the list will be retained.  Note that duplicates are
 determined relative to the comparison used in the sort.  Thus if 
-\fI-index 0\fR is used, \fB{1 a}\fR and \fB{1 b}\fR would be
+\fI\-index 0\fR is used, \fB{1 a}\fR and \fB{1 b}\fR would be
 considered duplicates and only the second element, \fB{1 b}\fR, would
 be retained.
 .SH "NOTES"
@@ -169,16 +194,14 @@ More complex sorting using a comparison function:
     }
     return [string compare [lindex $a 1] [lindex $b 1]]
 }
-% \fBlsort\fR -command compare \\
+% \fBlsort\fR -command compare \e
         {{3 apple} {0x2 carrot} {1 dingo} {2 banana}}
 {1 dingo} {2 banana} {0x2 carrot} {3 apple}
 .CE
 
 .SH "SEE ALSO"
-.VS 8.4
 list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), 
 lset(n), lrange(n), lreplace(n)
-.VE
 
 .SH KEYWORDS
 element, list, order, sort
diff --git a/doc/man.macros b/doc/man.macros
index 5d0c6fa..ddd073d 100644
--- a/doc/man.macros
+++ b/doc/man.macros
@@ -1,69 +1,77 @@
-'\" The definitions below are for supplemental macros used in Tcl/Tk
-'\" manual entries.
-'\"
-'\" .AP type name in/out ?indent?
-'\"	Start paragraph describing an argument to a library procedure.
-'\"	type is type of argument (int, etc.), in/out is either "in", "out",
-'\"	or "in/out" to describe whether procedure reads or modifies arg,
-'\"	and indent is equivalent to second arg of .IP (shouldn't ever be
-'\"	needed;  use .AS below instead)
-'\"
-'\" .AS ?type? ?name?
-'\"	Give maximum sizes of arguments for setting tab stops.  Type and
-'\"	name are examples of largest possible arguments that will be passed
-'\"	to .AP later.  If args are omitted, default tab stops are used.
-'\"
-'\" .BS
-'\"	Start box enclosure.  From here until next .BE, everything will be
-'\"	enclosed in one large box.
-'\"
-'\" .BE
-'\"	End of box enclosure.
-'\"
-'\" .CS
-'\"	Begin code excerpt.
-'\"
-'\" .CE
-'\"	End code excerpt.
-'\"
-'\" .VS ?version? ?br?
-'\"	Begin vertical sidebar, for use in marking newly-changed parts
-'\"	of man pages.  The first argument is ignored and used for recording
-'\"	the version when the .VS was added, so that the sidebars can be
-'\"	found and removed when they reach a certain age.  If another argument
-'\"	is present, then a line break is forced before starting the sidebar.
-'\"
-'\" .VE
-'\"	End of vertical sidebar.
-'\"
-'\" .DS
-'\"	Begin an indented unfilled display.
-'\"
-'\" .DE
-'\"	End of indented unfilled display.
-'\"
-'\" .SO
-'\"	Start of list of standard options for a Tk widget.  The
-'\"	options follow on successive lines, in four columns separated
-'\"	by tabs.
-'\"
-'\" .SE
-'\"	End of list of standard options for a Tk widget.
-'\"
-'\" .OP cmdName dbName dbClass
-'\"	Start of description of a specific option.  cmdName gives the
-'\"	option's name as specified in the class command, dbName gives
-'\"	the option's name in the option database, and dbClass gives
-'\"	the option's class in the option database.
-'\"
-'\" .UL arg1 arg2
-'\"	Print arg1 underlined, then print arg2 normally.
-'\"
-'\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
+.\" The -*- nroff -*- definitions below are for supplemental macros used
+.\" in Tcl/Tk manual entries.
+.\"
+.\" .AP type name in/out ?indent?
+.\"	Start paragraph describing an argument to a library procedure.
+.\"	type is type of argument (int, etc.), in/out is either "in", "out",
+.\"	or "in/out" to describe whether procedure reads or modifies arg,
+.\"	and indent is equivalent to second arg of .IP (shouldn't ever be
+.\"	needed;  use .AS below instead)
+.\"
+.\" .AS ?type? ?name?
+.\"	Give maximum sizes of arguments for setting tab stops.  Type and
+.\"	name are examples of largest possible arguments that will be passed
+.\"	to .AP later.  If args are omitted, default tab stops are used.
+.\"
+.\" .BS
+.\"	Start box enclosure.  From here until next .BE, everything will be
+.\"	enclosed in one large box.
+.\"
+.\" .BE
+.\"	End of box enclosure.
+.\"
+.\" .CS
+.\"	Begin code excerpt.
+.\"
+.\" .CE
+.\"	End code excerpt.
+.\"
+.\" .VS ?version? ?br?
+.\"	Begin vertical sidebar, for use in marking newly-changed parts
+.\"	of man pages.  The first argument is ignored and used for recording
+.\"	the version when the .VS was added, so that the sidebars can be
+.\"	found and removed when they reach a certain age.  If another argument
+.\"	is present, then a line break is forced before starting the sidebar.
+.\"
+.\" .VE
+.\"	End of vertical sidebar.
+.\"
+.\" .DS
+.\"	Begin an indented unfilled display.
+.\"
+.\" .DE
+.\"	End of indented unfilled display.
+.\"
+.\" .SO ?manpage?
+.\"	Start of list of standard options for a Tk widget. The manpage
+.\"	argument defines where to look up the standard options; if
+.\"	omitted, defaults to "options". The options follow on successive
+.\"	lines, in three columns separated by tabs.
+.\"
+.\" .SE
+.\"	End of list of standard options for a Tk widget.
+.\"
+.\" .OP cmdName dbName dbClass
+.\"	Start of description of a specific option.  cmdName gives the
+.\"	option's name as specified in the class command, dbName gives
+.\"	the option's name in the option database, and dbClass gives
+.\"	the option's class in the option database.
+.\"
+.\" .UL arg1 arg2
+.\"	Print arg1 underlined, then print arg2 normally.
+.\"
+.\" .QW arg1 ?arg2?
+.\"	Print arg1 in quotes, then arg2 normally (for trailing punctuation).
+.\"
+.\" .PQ arg1 ?arg2?
+.\"	Print an open parenthesis, arg1 in quotes, then arg2 normally
+.\"	(for trailing punctuation) and then a closing parenthesis.
+.\"
+.\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
 .if t .wh -1.3i ^B
 .nr ^l \n(.l
 .ad b
-'\"	# Start an argument description
+.\"	# Start an argument description
 .de AP
 .ie !"\\$4"" .TP \\$4
 .el \{\
@@ -72,7 +80,7 @@
 .\}
 .ta \\n()Au \\n()Bu
 .ie !"\\$3"" \{\
-\&\\$1	\\fI\\$2\\fP	(\\$3)
+\&\\$1 \\fI\\$2\\fP (\\$3)
 .\".b
 .\}
 .el \{\
@@ -85,7 +93,7 @@
 .\}
 .\}
 ..
-'\"	# define tabbing values for .AP
+.\"	# define tabbing values for .AP
 .de AS
 .nr )A 10n
 .if !"\\$1"" .nr )A \\w'\\$1'u+3n
@@ -95,9 +103,9 @@
 .nr )C \\n()Bu+\\w'(in/out)'u+2n
 ..
 .AS Tcl_Interp Tcl_CreateInterp in/out
-'\"	# BS - start boxed text
-'\"	# ^y = starting y location
-'\"	# ^b = 1
+.\"	# BS - start boxed text
+.\"	# ^y = starting y location
+.\"	# ^b = 1
 .de BS
 .br
 .mk ^y
@@ -107,7 +115,7 @@
 .if n \l'\\n(.lu\(ul'
 .if n .fi
 ..
-'\"	# BE - end boxed text (draw box now)
+.\"	# BE - end boxed text (draw box now)
 .de BE
 .nf
 .ti 0
@@ -127,16 +135,16 @@
 .br
 .nr ^b 0
 ..
-'\"	# VS - start vertical sidebar
-'\"	# ^Y = starting y location
-'\"	# ^v = 1 (for troff;  for nroff this doesn't matter)
+.\"	# VS - start vertical sidebar
+.\"	# ^Y = starting y location
+.\"	# ^v = 1 (for troff;  for nroff this doesn't matter)
 .de VS
 .if !"\\$2"" .br
 .mk ^Y
 .ie n 'mc \s12\(br\s0
 .el .nr ^v 1u
 ..
-'\"	# VE - end of vertical sidebar
+.\"	# VE - end of vertical sidebar
 .de VE
 .ie n 'mc
 .el \{\
@@ -151,9 +159,9 @@
 .\}
 .nr ^v 0
 ..
-'\"	# Special macro to handle page bottom:  finish off current
-'\"	# box/sidebar if in box/sidebar mode, then invoked standard
-'\"	# page bottom macro.
+.\"	# Special macro to handle page bottom:  finish off current
+.\"	# box/sidebar if in box/sidebar mode, then invoked standard
+.\"	# page bottom macro.
 .de ^B
 .ev 2
 'ti 0
@@ -180,34 +188,36 @@
 .mk ^Y
 .\}
 ..
-'\"	# DS - begin display
+.\"	# DS - begin display
 .de DS
 .RS
 .nf
 .sp
 ..
-'\"	# DE - end display
+.\"	# DE - end display
 .de DE
 .fi
 .RE
 .sp
 ..
-'\"	# SO - start of list of standard options
+.\"	# SO - start of list of standard options
 .de SO
+'ie '\\$1'' .ds So \\fBoptions\\fR
+'el .ds So \\fB\\$1\\fR
 .SH "STANDARD OPTIONS"
 .LP
 .nf
 .ta 5.5c 11c
 .ft B
 ..
-'\"	# SE - end of list of standard options
+.\"	# SE - end of list of standard options
 .de SE
 .fi
 .ft R
 .LP
-See the \\fBoptions\\fR manual entry for details on the standard options.
+See the \\*(So manual entry for details on the standard options.
 ..
-'\"	# OP - start of full description for a single option
+.\"	# OP - start of full description for a single option
 .de OP
 .LP
 .nf
@@ -218,17 +228,40 @@ Database Class:	\\fB\\$3\\fR
 .fi
 .IP
 ..
-'\"	# CS - begin code excerpt
+.\"	# CS - begin code excerpt
 .de CS
 .RS
 .nf
 .ta .25i .5i .75i 1i
 ..
-'\"	# CE - end code excerpt
+.\"	# CE - end code excerpt
 .de CE
 .fi
 .RE
 ..
+.\"	# UL - underline word
 .de UL
 \\$1\l'|0\(ul'\\$2
 ..
+.\"	# QW - apply quotation marks to word
+.de QW
+.ie '\\*(lq'"' ``\\$1''\\$2
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\$2
+..
+.\"	# PQ - apply parens and quotation marks to word
+.de PQ
+.ie '\\*(lq'"' (``\\$1''\\$2)\\$3
+.\"" fix emacs highlighting
+.el (\\*(lq\\$1\\*(rq\\$2)\\$3
+..
+.\"	# QR - quoted range
+.de QR
+.ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
+..
+.\"	# MT - "empty" string
+.de MT
+.QW ""
+..
diff --git a/doc/mathfunc.n b/doc/mathfunc.n
new file mode 100644
index 0000000..4ba25e4
--- /dev/null
+++ b/doc/mathfunc.n
@@ -0,0 +1,271 @@
+'\"
+'\" Copyright (c) 1993 The Regents of the University of California.
+'\" Copyright (c) 1994-2000 Sun Microsystems, Inc.
+'\" Copyright (c) 2005 by Kevin B. Kenny <kennykb@acm.org>. All rights reserved
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH mathfunc n 8.5 Tcl "Tcl Mathematical Functions"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+mathfunc \- Mathematical functions for Tcl expressions
+.SH SYNOPSIS
+package require \fBTcl 8.5\fR
+.sp
+\fB::tcl::mathfunc::abs\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::acos\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::asin\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::atan\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::atan2\fR \fIy\fR \fIx\fR
+.br
+\fB::tcl::mathfunc::bool\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::ceil\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::cos\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::cosh\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::double\fR \fIarg\fR
+.br
+.VS 8.5
+\fB::tcl::mathfunc::entier\fR \fIarg\fR
+.br
+.VE 8.5
+\fB::tcl::mathfunc::exp\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::floor\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::fmod\fR \fIx\fR \fIy\fR
+.br
+\fB::tcl::mathfunc::hypot\fR \fIx\fR \fIy\fR
+.br
+\fB::tcl::mathfunc::int\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::isqrt\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::log\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::log10\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::max\fR \fIarg\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathfunc::min\fR \fIarg\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathfunc::pow\fR \fIx\fR \fIy\fR
+.br
+\fB::tcl::mathfunc::rand\fR
+.br
+\fB::tcl::mathfunc::round\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::sin\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::sinh\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::sqrt\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::srand\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::tan\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::tanh\fR \fIarg\fR
+.br
+\fB::tcl::mathfunc::wide\fR \fIarg\fR
+.sp
+.BE
+.SH "DESCRIPTION"
+.PP
+The \fBexpr\fR command handles mathematical functions of the form
+\fBsin($x)\fR or \fBatan2($y,$x)\fR by converting them to calls of the
+form \fB[tcl::mathfunc::sin [expr {$x}]]\fR or
+\fB[tcl::mathfunc::atan2 [expr {$y}] [expr {$x}]]\fR.
+A number of math functions are available by default within the
+namespace \fB::tcl::mathfunc\fR; these functions are also available
+for code apart from \fBexpr\fR, by invoking the given commands
+directly.
+.PP
+Tcl supports the following mathematical functions in expressions, all
+of which work solely with floating-point numbers unless otherwise noted:
+.DS
+.ta 3c 6c 9c
+\fBabs\fR	\fBacos\fR	\fBasin\fR	\fBatan\fR
+\fBatan2\fR	\fBbool\fR	\fBceil\fR	\fBcos\fR
+\fBcosh\fR	\fBdouble\fR	\fBentier\fR	\fBexp\fR
+\fBfloor\fR	\fBfmod\fR	\fBhypot\fR	\fBint\fR
+\fBisqrt\fR	\fBlog\fR	\fBlog10\fR	\fBmax\fR
+\fBmin\fR	\fBpow\fR	\fBrand\fR	\fBround\fR
+\fBsin\fR	\fBsinh\fR	\fBsqrt\fR	\fBsrand\fR
+\fBtan\fR	\fBtanh\fR	\fBwide\fR
+.DE
+.PP
+In addition to these predefined functions, applications may
+define additional functions by using \fBproc\fR (or any other method,
+such as \fBinterp alias\fR or \fBTcl_CreateObjCommand\fR) to define
+new commands in the \fBtcl::mathfunc\fR namespace.  In addition, an
+obsolete interface named \fBTcl_CreateMathFunc\fR() is available to
+extensions that are written in C. The latter interface is not recommended
+for new implementations.
+.SS "DETAILED DEFINITIONS"
+.TP
+\fBabs \fIarg\fR
+Returns the absolute value of \fIarg\fR.  \fIArg\fR may be either
+integer or floating-point, and the result is returned in the same form.
+.TP
+\fBacos \fIarg\fR
+Returns the arc cosine of \fIarg\fR, in the range [\fI0\fR,\fIpi\fR]
+radians. \fIArg\fR should be in the range [\fI\-1\fR,\fI1\fR].
+.TP
+\fBasin \fIarg\fR
+Returns the arc sine of \fIarg\fR, in the range [\fI\-pi/2\fR,\fIpi/2\fR]
+radians.  \fIArg\fR should be in the range [\fI\-1\fR,\fI1\fR].
+.TP
+\fBatan \fIarg\fR
+Returns the arc tangent of \fIarg\fR, in the range [\fI\-pi/2\fR,\fIpi/2\fR]
+radians.
+.TP
+\fBatan2 \fIy x\fR
+Returns the arc tangent of \fIy\fR/\fIx\fR, in the range [\fI\-pi\fR,\fIpi\fR]
+radians.  \fIx\fR and \fIy\fR cannot both be 0.  If \fIx\fR is greater
+than \fI0\fR, this is equivalent to
+.QW "\fBatan \fR[\fBexpr\fR {\fIy\fB/\fIx\fR}]" .
+.TP
+\fBbool \fIarg\fR
+Accepts any numeric value, or any string acceptable to
+\fBstring is boolean\fR, and returns the corresponding 
+boolean value \fB0\fR or \fB1\fR.  Non-zero numbers are true.
+Other numbers are false.  Non-numeric strings produce boolean value in
+agreement with \fBstring is true\fR and \fBstring is false\fR.
+.TP
+\fBceil \fIarg\fR
+Returns the smallest integral floating-point value (i.e. with a zero
+fractional part) not less than \fIarg\fR.  The argument may be any
+numeric value.
+.TP
+\fBcos \fIarg\fR
+Returns the cosine of \fIarg\fR, measured in radians.
+.TP
+\fBcosh \fIarg\fR
+Returns the hyperbolic cosine of \fIarg\fR.  If the result would cause
+an overflow, an error is returned.
+.TP
+\fBdouble \fIarg\fR
+The argument may be any numeric value,
+If \fIarg\fR is a floating-point value, returns \fIarg\fR, otherwise converts
+\fIarg\fR to floating-point and returns the converted value.  May return
+\fBInf\fR or \fB\-Inf\fR when the argument is a numeric value that exceeds
+the floating-point range.
+.TP
+\fBentier \fIarg\fR
+.VS 8.5
+The argument may be any numeric value.  The integer part of \fIarg\fR
+is determined and returned.  The integer range returned by this function
+is unlimited, unlike \fBint\fR and \fBwide\fR which
+truncate their range to fit in particular storage widths.
+.VE 8.5
+.TP
+\fBexp \fIarg\fR
+Returns the exponential of \fIarg\fR, defined as \fIe\fR**\fIarg\fR.
+If the result would cause an overflow, an error is returned.
+.TP
+\fBfloor \fIarg\fR
+Returns the largest integral floating-point value (i.e. with a zero
+fractional part) not greater than \fIarg\fR.  The argument may be
+any numeric value.
+.TP
+\fBfmod \fIx y\fR
+Returns the floating-point remainder of the division of \fIx\fR by
+\fIy\fR.  If \fIy\fR is 0, an error is returned.
+.TP
+\fBhypot \fIx y\fR
+Computes the length of the hypotenuse of a right-angled triangle
+.QW "\fBsqrt\fR [\fBexpr\fR {\fIx\fB*\fIx\fB+\fIy\fB*\fIy\fR}]".
+.TP
+\fBint \fIarg\fR
+The argument may be any numeric value.  The integer part of \fIarg\fR
+is determined, and then the low order bits of that integer value up
+to the machine word size are returned as an integer value.  For reference,
+the number of bytes in the machine word are stored in
+\fBtcl_platform(wordSize)\fR.
+.TP
+\fBisqrt \fIarg\fR
+Computes the integer part of the square root of \fIarg\fR.  \fIArg\fR must be
+a positive value, either an integer or a floating point number.
+Unlike \fBsqrt\fR, which is limited to the precision of a floating point
+number, \fIisqrt\fR will return a result of arbitrary precision.
+.TP
+\fBlog \fIarg\fR
+Returns the natural logarithm of \fIarg\fR.  \fIArg\fR must be a
+positive value.
+.TP
+\fBlog10 \fIarg\fR
+Returns the base 10 logarithm of \fIarg\fR.  \fIArg\fR must be a
+positive value.
+.TP
+\fBmax \fIarg\fB \fI...\fR
+Accepts one or more numeric arguments.  Returns the one argument
+with the greatest value.
+.TP
+\fBmin \fIarg\fB \fI...\fR
+Accepts one or more numeric arguments.  Returns the one argument
+with the least value.
+.TP
+\fBpow \fIx y\fR
+Computes the value of \fIx\fR raised to the power \fIy\fR.  If \fIx\fR
+is negative, \fIy\fR must be an integer value.
+.TP
+\fBrand\fR
+Returns a pseudo-random floating-point value in the range (\fI0\fR,\fI1\fR).  
+The generator algorithm is a simple linear congruential generator that
+is not cryptographically secure.  Each result from \fBrand\fR completely
+determines all future results from subsequent calls to \fBrand\fR, so
+\fBrand\fR should not be used to generate a sequence of secrets, such as
+one-time passwords.  The seed of the generator is initialized from the
+internal clock of the machine or may be set with the \fBsrand\fR function.
+.TP
+\fBround \fIarg\fR
+If \fIarg\fR is an integer value, returns \fIarg\fR, otherwise converts
+\fIarg\fR to integer by rounding and returns the converted value.
+.TP
+\fBsin \fIarg\fR
+Returns the sine of \fIarg\fR, measured in radians.
+.TP
+\fBsinh \fIarg\fR
+Returns the hyperbolic sine of \fIarg\fR.  If the result would cause
+an overflow, an error is returned.
+.TP
+\fBsqrt \fIarg\fR
+The argument may be any non-negative numeric value.  Returns a floating-point
+value that is the square root of \fIarg\fR.  May return \fBInf\fR when the
+argument is a numeric value that exceeds the square of the maximum value of
+the floating-point range.
+.TP
+\fBsrand \fIarg\fR
+The \fIarg\fR, which must be an integer, is used to reset the seed for
+the random number generator of \fBrand\fR.  Returns the first random
+number (see \fBrand\fR) from that seed.  Each interpreter has its own seed.
+.TP
+\fBtan \fIarg\fR
+Returns the tangent of \fIarg\fR, measured in radians.
+.TP
+\fBtanh \fIarg\fR
+Returns the hyperbolic tangent of \fIarg\fR.
+.TP
+\fBwide \fIarg\fR
+The argument may be any numeric value.  The integer part of \fIarg\fR
+is determined, and then the low order 64 bits of that integer value
+are returned as an integer value.  
+.SH "SEE ALSO"
+expr(n), mathop(n), namespace(n)
+.SH "COPYRIGHT"
+.nf
+Copyright (c) 1993 The Regents of the University of California.
+Copyright (c) 1994-2000 Sun Microsystems Incorporated.
+Copyright (c) 2005, 2006 by Kevin B. Kenny <kennykb@acm.org>.
+.fi
diff --git a/doc/mathop.n b/doc/mathop.n
new file mode 100644
index 0000000..5757f87
--- /dev/null
+++ b/doc/mathop.n
@@ -0,0 +1,305 @@
+.\" -*- nroff -*-
+.\" Copyright (c) 2006-2007 Donal K. Fellows.
+.\"
+.\" See the file "license.terms" for information on usage and redistribution
+.\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+.\"
+.so man.macros
+.TH mathop n 8.5 Tcl "Tcl Mathematical Operator Commands"
+.BS
+.\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+mathop \- Mathematical operators as Tcl commands
+.SH SYNOPSIS
+package require \fBTcl 8.5\fR
+.sp
+\fB::tcl::mathop::!\fR \fInumber\fR
+.br
+\fB::tcl::mathop::~\fR \fInumber\fR
+.br
+\fB::tcl::mathop::+\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::\-\fR \fInumber\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::*\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::/\fR \fInumber\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::%\fR \fInumber number\fR
+.br
+\fB::tcl::mathop::**\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::&\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::|\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::^\fR ?\fInumber\fR ...?
+.br
+\fB::tcl::mathop::<<\fR \fInumber number\fR
+.br
+\fB::tcl::mathop::>>\fR \fInumber number\fR
+.br
+\fB::tcl::mathop::==\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathop::!=\fR \fIarg arg\fR
+.br
+\fB::tcl::mathop::<\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathop::<=\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathop::>=\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathop::>\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathop::eq\fR ?\fIarg\fR ...?
+.br
+\fB::tcl::mathop::ne\fR \fIarg arg\fR
+.br
+\fB::tcl::mathop::in\fR \fIarg list\fR
+.br
+\fB::tcl::mathop::ni\fR \fIarg list\fR
+.sp
+.BE
+.SH DESCRIPTION
+.PP
+The commands in the \fB::tcl::mathop\fR namespace implement the same set of
+operations as supported by the \fBexpr\fR command. All are exported from the
+namespace, but are not imported into any other namespace by default. Note that
+renaming, reimplementing or deleting any of the commands in the namespace does
+\fInot\fR alter the way that the \fBexpr\fR command behaves, and nor does
+defining any new commands in the \fB::tcl::mathop\fR namespace.
+.PP
+The following operator commands are supported:
+.DS
+.ta 2c 4c 6c 8c
+\fB~\fR	\fB!\fR	\fB+\fR	\fB\-\fR	\fB*\fR
+\fB/\fR	\fB%\fR	\fB**\fR	\fB&\fR	\fB|\fR
+\fB^\fR	\fB>>\fR	\fB<<\fR	\fB==\fR	\fBeq\fR
+\fB!=\fR	\fBne\fR	\fB<\fR	\fB<=\fR	\fB>\fR
+\fB>=\fR	\fBin\fR	\fBni\fR
+.DE
+.SS "MATHEMATICAL OPERATORS"
+.PP
+The behaviors of the mathematical operator commands are as follows:
+.TP
+\fB!\fR \fIboolean\fR
+.
+Returns the boolean negation of \fIboolean\fR, where \fIboolean\fR may be any
+numeric value or any other form of boolean value (i.e. it returns truth if the
+argument is falsity or zero, and falsity if the argument is truth or
+non-zero).
+.TP
+\fB+\fR ?\fInumber\fR ...?
+.
+Returns the sum of arbitrarily many arguments. Each \fInumber\fR argument may
+be any numeric value. If no arguments are given, the result will be zero (the
+summation identity).
+.TP
+\fB\-\fR \fInumber\fR ?\fInumber\fR ...?
+.
+If only a single \fInumber\fR argument is given, returns the negation of that
+numeric value. Otherwise returns the number that results when all subsequent
+numeric values are subtracted from the first one. All \fInumber\fR arguments
+must be numeric values. At least one argument must be given.
+.TP
+\fB*\fR ?\fInumber\fR ...?
+.
+Returns the product of arbitrarily many arguments. Each \fInumber\fR may be
+any numeric value. If no arguments are given, the result will be one (the
+multiplicative identity).
+.TP
+\fB/\fR \fInumber\fR ?\fInumber\fR ...?
+.
+If only a single \fInumber\fR argument is given, returns the reciprocal of that
+numeric value (i.e. the value obtained by dividing 1.0 by that value).
+Otherwise returns the number that results when the first numeric argument is
+divided by all subsequent numeric arguments. All \fInumber\fR arguments must
+be numeric values. At least one argument must be given.
+.RS
+.PP
+Note that when the leading values in the list of arguments are integers,
+integer division will be used for those initial steps (i.e. the intermediate
+results will be as if the functions \fIfloor\fR and \fIint\fR are applied to
+them, in that order). If all values in the operation are integers, the result
+will be an integer.
+.RE
+.TP
+\fB%\fR \fInumber number\fR
+.
+Returns the integral modulus (i.e., remainder) of the first argument
+with respect to the second.
+Each \fInumber\fR must have an integral value.
+Also, the sign of the result will be the same as the sign of the second
+\fInumber\fR, which must not be zero.
+.RS
+.PP
+Note that Tcl defines this operation exactly even for negative numbers, so
+that the following command returns a true value (omitting the namespace for
+clarity):
+.PP
+.CS
+\fB==\fR [\fB*\fR [\fB/\fI x y\fR] \fIy\fR] [\fB-\fI x\fR [\fB%\fI x y\fR]]
+.CE
+.RE
+.TP
+\fB**\fR ?\fInumber\fR ...?
+.
+Returns the result of raising each value to the power of the result of
+recursively operating on the result of processing the following arguments, so
+.QW "\fB** 2 3 4\fR"
+is the same as
+.QW "\fB** 2 [** 3 4]\fR" .
+Each \fInumber\fR may be
+any numeric value, though the second number must not be fractional if the
+first is negative. If no arguments are given, the result will be one, and if
+only one argument is given, the result will be that argument. The
+result will have an integral value only when all arguments are
+integral values.
+.SS "COMPARISON OPERATORS"
+.PP
+The behaviors of the comparison operator commands (most of which operate
+preferentially on numeric arguments) are as follows:
+.TP
+\fB==\fR ?\fIarg\fR ...?
+.
+Returns whether each argument is equal to the arguments on each side of it in
+the sense of the \fBexpr\fR == operator (\fIi.e.\fR, numeric comparison if
+possible, exact string comparison otherwise). If fewer than two arguments
+are given, this operation always returns a true value.
+.TP
+\fBeq\fR ?\fIarg\fR ...?
+.
+Returns whether each argument is equal to the arguments on each side of it
+using exact string comparison. If fewer than two arguments are given, this
+operation always returns a true value.
+.TP
+\fB!=\fR \fIarg arg\fR
+.
+Returns whether the two arguments are not equal to each other, in the sense of
+the \fBexpr\fR != operator (\fIi.e.\fR, numeric comparison if possible, exact
+string comparison otherwise).
+.TP
+\fBne\fR \fIarg arg\fR
+.
+Returns whether the two arguments are not equal to each other using exact
+string comparison.
+.TP
+\fB<\fR ?\fIarg\fR ...?
+.
+Returns whether the arbitrarily-many arguments are ordered, with each argument
+after the first having to be strictly more than the one preceding it.
+Comparisons are performed preferentially on the numeric values, and are
+otherwise performed using UNICODE string comparison. If fewer than two
+arguments are present, this operation always returns a true value. When the
+arguments are numeric but should be compared as strings, the \fBstring
+compare\fR command should be used instead.
+.TP
+\fB<=\fR ?\fIarg\fR ...?
+.
+Returns whether the arbitrarily-many arguments are ordered, with each argument
+after the first having to be equal to or more than the one preceding it.
+Comparisons are performed preferentially on the numeric values, and are
+otherwise performed using UNICODE string comparison. If fewer than two
+arguments are present, this operation always returns a true value. When the
+arguments are numeric but should be compared as strings, the \fBstring
+compare\fR command should be used instead.
+.TP
+\fB>\fR ?\fIarg\fR ...?
+.
+Returns whether the arbitrarily-many arguments are ordered, with each argument
+after the first having to be strictly less than the one preceding it.
+Comparisons are performed preferentially on the numeric values, and are
+otherwise performed using UNICODE string comparison. If fewer than two
+arguments are present, this operation always returns a true value. When the
+arguments are numeric but should be compared as strings, the \fBstring
+compare\fR command should be used instead.
+.TP
+\fB>=\fR ?\fIarg\fR ...?
+.
+Returns whether the arbitrarily-many arguments are ordered, with each argument
+after the first having to be equal to or less than the one preceding it.
+Comparisons are performed preferentially on the numeric values, and are
+otherwise performed using UNICODE string comparison. If fewer than two
+arguments are present, this operation always returns a true value. When the
+arguments are numeric but should be compared as strings, the \fBstring
+compare\fR command should be used instead.
+.SS "BIT-WISE OPERATORS"
+.PP
+The behaviors of the bit-wise operator commands (all of which only operate on
+integral arguments) are as follows:
+.TP
+\fB~\fR \fInumber\fR
+.
+Returns the bit-wise negation of \fInumber\fR. \fINumber\fR may be an integer
+of any size. Note that the result of this operation will always have the
+opposite sign to the input \fInumber\fR.
+.TP
+\fB&\fR ?\fInumber\fR ...?
+.
+Returns the bit-wise AND of each of the arbitrarily many arguments. Each
+\fInumber\fR must have an integral value. If no arguments are given, the
+result will be minus one.
+.TP
+\fB|\fR ?\fInumber\fR ...?
+.
+Returns the bit-wise OR of each of the arbitrarily many arguments. Each
+\fInumber\fR must have an integral value. If no arguments are given, the
+result will be zero.
+.TP
+\fB^\fR ?\fInumber\fR ...?
+.
+Returns the bit-wise XOR of each of the arbitrarily many arguments. Each
+\fInumber\fR must have an integral value. If no arguments are given, the
+result will be zero.
+.TP
+\fB<<\fR \fInumber number\fR
+.
+Returns the result of bit-wise shifting the first argument left by the
+number of bits specified in the second argument. Each \fInumber\fR
+must have an integral value.
+.TP
+\fB>>\fR \fInumber number\fR
+.
+Returns the result of bit-wise shifting the first argument right by
+the number of bits specified in the second argument. Each \fInumber\fR
+must have an integral value.
+.SS "LIST OPERATORS"
+.PP
+The behaviors of the list-oriented operator commands are as follows:
+.TP
+\fBin\fR \fIarg list\fR
+.
+Returns whether the value \fIarg\fR is present in the list \fIlist\fR
+(according to exact string comparison of elements).
+.TP
+\fBni\fR \fIarg list\fR
+.
+Returns whether the value \fIarg\fR is not present in the list \fIlist\fR
+(according to exact string comparison of elements).
+.SH EXAMPLES
+The simplest way to use the operators is often by using \fBnamespace path\fR
+to make the commands available. This has the advantage of not affecting the
+set of commands defined by the current namespace.
+.CS
+namespace path {\fB::tcl::mathop\fR ::tcl::mathfunc}
+
+\fI# Compute the sum of some numbers\fR
+set sum [\fB+\fR 1 2 3]
+
+\fI# Compute the average of a list\fR
+set list {1 2 3 4 5 6}
+set mean [\fB/\fR [\fB+\fR {*}$list] [double [llength $list]]]
+
+\fI# Test for list membership\fR
+set gotIt [\fBin\fR 3 $list]
+
+\fI# Test to see if a value is within some defined range\fR
+set inRange [\fB<=\fR 1 $x 5]
+
+\fI# Test to see if a list is sorted\fR
+set sorted [\fB<=\fR {*}$list]
+.CE
+.SH "SEE ALSO"
+expr(n), mathfunc(n), namespace(n)
+.SH KEYWORDS
+command, expression, operator
diff --git a/doc/memory.n b/doc/memory.n
index 9485192..4ff681d 100644
--- a/doc/memory.n
+++ b/doc/memory.n
@@ -7,11 +7,10 @@
 .TH memory n 8.1 Tcl "Tcl Built-In Commands"
 .BS
 .SH NAME
-memory \- Control Tcl memory debugging capabilities.
+memory \- Control Tcl memory debugging capabilities
 .SH SYNOPSIS
 \fBmemory \fIoption \fR?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBmemory\fR command gives the Tcl developer control of Tcl's memory
@@ -21,9 +20,11 @@ memory debugging enabled (when \fBTCL_MEM_DEBUG\fR is defined at
 compile time), and after \fBTcl_InitMemory\fR has been called.
 .TP
 \fBmemory active\fR \fIfile\fR
+.
 Write a list of all currently allocated memory to the specified \fIfile\fR.
 .TP
 \fBmemory break_on_malloc\fR \fIcount\fR
+.
 After the \fIcount\fR allocations have been performed, \fBckalloc\fR
 outputs a message to this effect and that it is now attempting to enter
 the C debugger.  Tcl will then issue a \fISIGINT\fR signal against itself.
@@ -31,22 +32,33 @@ If you are running Tcl under a C debugger, it should then enter the debugger
 command mode.
 .TP
 \fBmemory info\fR
+.
 Returns a report containing the total allocations and frees since 
 Tcl began, the current packets allocated (the current
 number of calls to \fBckalloc\fR not met by a corresponding call 
 to \fBckfree\fR), the current bytes allocated, and the maximum number
 of packets and bytes allocated.
 .TP
-\fB memory init [on|off]\fR
+\fBmemory init \fR[\fBon\fR|\fBoff\fR]
+.
 Turn on or off the pre-initialization of all allocated memory
-with bogus bytes.  Useful for detecting the use of uninitialized values.
+with bogus bytes.  Useful for detecting the use of uninitialized
+values.
+.TP
+\fBmemory objs \fIfile\fR
+.
+Causes a list of all allocated Tcl_Obj values to be written to the specified
+\fIfile\fR immediately, together with where they were allocated.  Useful for
+checking for leaks of values.
 .TP
 \fBmemory onexit\fR \fIfile\fR
+.
 Causes a list of all allocated memory to be written to the specified \fIfile\fR
 during the finalization of Tcl's memory subsystem.  Useful for checking
 that memory is properly cleaned up during process exit.
 .TP
 \fBmemory tag\fR \fIstring\fR
+.
 Each packet of memory allocated by \fBckalloc\fR can have associated
 with it a string-valued tag.  In the lists of allocated memory generated
 by \fBmemory active\fR and \fBmemory onexit\fR, the tag for each packet
@@ -54,22 +66,25 @@ is printed along with other information about the packet.  The
 \fBmemory tag\fR command sets the tag value for subsequent calls
 to \fBckalloc\fR to be \fIstring\fR.  
 .TP
-\fBmemory trace [on|off]\fR
-.br
+\fBmemory trace \fR[\fBon\fR|\fBoff\fR]
+.
 Turns memory tracing on or off.  When memory tracing is on, every call
 to \fBckalloc\fR causes a line of trace information to be written to
 \fIstderr\fR, consisting of the word \fIckalloc\fR, followed by the
 address returned, the amount of memory allocated, and the C filename
 and line number of the code performing the allocation.  For example:
 .RS
+.PP
 .CS
 ckalloc 40e478 98 tclProc.c 1406
 .CE
+.PP
 Calls to \fBckfree\fR are traced in the same manner.
 .RE
 .TP
 \fBmemory trace_on_at_malloc\fR \fIcount\fR
-Enable memory tracing after \fIcount\fR \fBckalloc\fR's have been performed.
+.
+Enable memory tracing after \fIcount\fR \fBckalloc\fRs have been performed.
 For example, if you enter \fBmemory trace_on_at_malloc 100\fR,
 after the 100th call to \fBckalloc\fR, memory trace information will begin
 being displayed for all allocations and frees.  Since there can be a lot
@@ -79,7 +94,8 @@ produced), if you can identify a number of allocations that occur before
 the problem sets in.  The current number of memory allocations that have 
 occurred since Tcl started is printed on a guard zone failure.
 .TP
-\fBmemory validate [on|off]\fR
+\fBmemory validate \fR[\fBon\fR|\fBoff\fR]
+.
 Turns memory validation on or off. When memory validation is enabled,
 on every call to \fBckalloc\fR or \fBckfree\fR, the guard zones are
 checked for every piece of memory currently in existence that was
@@ -90,9 +106,7 @@ overwrite can be detected on the first call to \fBckalloc\fR or
 \fBckfree\fR after the overwrite occurred, rather than when the
 specific memory with the overwritten guard zone(s) is freed, which may
 occur long after the overwrite occurred.
-
 .SH "SEE ALSO"
 ckalloc, ckfree, Tcl_ValidateAllMemory, Tcl_DumpActiveMemory, TCL_MEM_DEBUG
-
 .SH KEYWORDS
 memory, debug
diff --git a/doc/msgcat.n b/doc/msgcat.n
index 6fdc31a..47b6bf7 100644
--- a/doc/msgcat.n
+++ b/doc/msgcat.n
@@ -5,15 +5,15 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH "msgcat" n 1.3 msgcat "Tcl Bundled Packages"
+.TH "msgcat" n 1.5 msgcat "Tcl Bundled Packages"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 msgcat \- Tcl message catalog
 .SH SYNOPSIS
-\fBpackage require Tcl 8.2\fR
+\fBpackage require Tcl 8.5\fR
 .sp
-\fBpackage require msgcat 1.3.5\fR
+\fBpackage require msgcat 1.5\fR
 .sp
 \fB::msgcat::mc \fIsrc-string\fR ?\fIarg arg ...\fR?
 .sp
@@ -29,15 +29,21 @@ msgcat \- Tcl message catalog
 .sp
 \fB::msgcat::mcmset \fIlocale src-trans-list\fR
 .sp
+.VS "TIP 404"
+\fB::msgcat::mcflset \fIsrc-string \fR?\fItranslate-string\fR?
+.sp
+\fB::msgcat::mcflmset \fIsrc-trans-list\fR
+.VE "TIP 404"
+.sp
 \fB::msgcat::mcunknown \fIlocale src-string\fR
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBmsgcat\fR package provides a set of functions
 that can be used to manage multi-lingual user interfaces.
-Text strings are defined in a ``message catalog'' which
-is independent from the application, and
+Text strings are defined in a
+.QW "message catalog"
+which is independent from the application, and
 which can be edited or localized without modifying
 the application source code.  New languages
 or locales are provided by adding a new file to
@@ -49,10 +55,12 @@ wishes to be enabled for multi-lingual applications.
 .SH COMMANDS
 .TP
 \fB::msgcat::mc \fIsrc-string\fR ?\fIarg arg ...\fR?
+.
 Returns a translation of \fIsrc-string\fR according to the
 user's current locale.  If additional arguments past \fIsrc-string\fR
 are given, the \fBformat\fR command is used to substitute the
 additional arguments in the translation of \fIsrc-string\fR.
+.RS
 .PP
 \fB::msgcat::mc\fR will search the messages defined
 in the current namespace for a translation of \fIsrc-string\fR; if
@@ -67,14 +75,17 @@ application can pass the English string through \fB::msgcat::mc\fR and
 use the result.  If an application is written for a single language in
 this fashion, then it is easy to add support for additional languages
 later simply by defining new message catalog entries.
+.RE
 .TP
 \fB::msgcat::mcmax ?\fIsrc-string src-string ...\fR?
+.
 Given several source strings, \fB::msgcat::mcmax\fR returns the length
 of the longest translated string.  This is useful when designing
 localized GUIs, which may require that all buttons, for example, be a
 fixed width (which will be the width of the widest button).
 .TP
-\fB::msgcat::mclocale \fR?\fInewLocale\fR?  
+\fB::msgcat::mclocale \fR?\fInewLocale\fR?
+.
 This function sets the locale to \fInewLocale\fR.  If \fInewLocale\fR
 is omitted, the current locale is returned, otherwise the current locale
 is set to \fInewLocale\fR.  msgcat stores and compares the locale in a
@@ -84,6 +95,7 @@ the user's environment.  See \fBLOCALE SPECIFICATION\fR
 below for a description of the locale string format.
 .TP
 \fB::msgcat::mcpreferences\fR
+.
 Returns an ordered list of the locales preferred by
 the user, based on the user's language specification.
 The list is ordered from most specific to least
@@ -91,13 +103,15 @@ preference.  The list is derived from the current
 locale set in msgcat by \fB::msgcat::mclocale\fR, and
 cannot be set independently.  For example, if the
 current locale is en_US_funky, then \fB::msgcat::mcpreferences\fR
-returns \fB{en_US_funky en_US en}\fR.
+returns \fB{en_US_funky en_US en {}}\fR.
 .TP
 \fB::msgcat::mcload \fIdirname\fR
+.
 Searches the specified directory for files that match
 the language specifications returned by \fB::msgcat::mcpreferences\fR
-(note that these are all lowercase), extended by the file
-extension ``.msg''.  Each matching file is 
+(note that these are all lowercase), extended by the file extension
+.QW .msg .
+Each matching file is
 read in order, assuming a UTF-8 encoding.  The file contents are
 then evaluated as a Tcl script.  This means that Unicode characters
 may be present in the message file either directly in their UTF-8
@@ -106,12 +120,14 @@ evaluation.  The number of message files which matched the specification
 and were loaded is returned.
 .TP
 \fB::msgcat::mcset \fIlocale src-string \fR?\fItranslate-string\fR?
+.
 Sets the translation for \fIsrc-string\fR to \fItranslate-string\fR
 in the specified \fIlocale\fR and the current namespace.  If
 \fItranslate-string\fR is not specified, \fIsrc-string\fR is used
 for both.  The function returns \fItranslate-string\fR.
 .TP
 \fB::msgcat::mcmset \fIlocale src-trans-list\fR
+.
 Sets the translation for multiple source strings in
 \fIsrc-trans-list\fR in the specified \fIlocale\fR and the current
 namespace.
@@ -121,7 +137,28 @@ translate-string ...\fR?} \fB::msgcat::mcmset\fR can be significantly
 faster than multiple invocations of \fB::msgcat::mcset\fR. The function
 returns the number of translations set.
 .TP
+\fB::msgcat::mcflset \fIsrc-string \fR?\fItranslate-string\fR?
+.VS "TIP 404"
+Sets the translation for \fIsrc-string\fR to \fItranslate-string\fR in the
+current namespace for the locale implied by the name of the message catalog
+being loaded via \fB::msgcat::mcload\fR.  If \fItranslate-string\fR is not
+specified, \fIsrc-string\fR is used for both.  The function returns
+\fItranslate-string\fR.
+.VE "TIP 404"
+.TP
+\fB::msgcat::mcflmset \fIsrc-trans-list\fR
+.VS "TIP 404"
+Sets the translation for multiple source strings in \fIsrc-trans-list\fR in
+the current namespace for the locale implied by the name of the message
+catalog being loaded via \fB::msgcat::mcload\fR. \fIsrc-trans-list\fR must
+have an even number of elements and is in the form {\fIsrc-string
+translate-string\fR ?\fIsrc-string translate-string ...\fR?}
+\fB::msgcat::mcflmset\fR can be significantly faster than multiple invocations
+of \fB::msgcat::mcflset\fR. The function returns the number of translations set.
+.VE "TIP 404"
+.TP
 \fB::msgcat::mcunknown \fIlocale src-string\fR
+.
 This routine is called by \fB::msgcat::mc\fR in the case when
 a translation for \fIsrc-string\fR is not defined in the
 current locale.  The default action is to return
@@ -137,36 +174,57 @@ The locale is specified to \fBmsgcat\fR by a locale string
 passed to \fB::msgcat::mclocale\fR.
 The locale string consists of
 a language code, an optional country code, and an optional
-system-specific code, each separated by ``_''.  The country and language
+system-specific code, each separated by
+.QW _ .
+The country and language
 codes are specified in standards ISO-639 and ISO-3166.
-For example, the locale ``en'' specifies English and ``en_US'' specifies
-U.S. English.
+For example, the locale
+.QW en
+specifies English and
+.QW en_US
+specifies U.S. English.
 .PP
 When the msgcat package is first loaded, the locale is initialized
 according to the user's environment.  The variables \fBenv(LC_ALL)\fR,
 \fBenv(LC_MESSAGES)\fR, and \fBenv(LANG)\fR are examined in order.
 The first of them to have a non-empty value is used to determine the
 initial locale.  The value is parsed according to the XPG4 pattern
+.PP
 .CS
 language[_country][.codeset][@modifier]
 .CE
+.PP
 to extract its parts.  The initial locale is then set by calling
 \fB::msgcat::mclocale\fR with the argument 
+.PP
 .CS
 language[_country][_modifier]
 .CE
-On Windows, if none of those environment variables is set, msgcat will
-attempt to extract locale information from the
-registry.  If all these attempts to discover an initial locale
-from the user's environment fail, msgcat defaults to an initial
-locale of ``C''.
-.PP
-When a locale is specified by the user, a ``best match'' search is
-performed during string translation.  For example, if a user specifies
-en_GB_Funky, the locales ``en_GB_Funky'', ``en_GB'', and ``en'' are
-searched in order until a matching translation string is found.  If no
-translation string is available, then \fB::msgcat::mcunknown\fR is
-called.
+.PP
+On Windows and Cygwin, if none of those environment variables is set,
+msgcat will attempt to extract locale information from the registry.
+From Windows Vista on, the RFC4747 locale name "lang-script-country-options"
+is transformed to the locale as "lang_country_script" (Example:
+sr-Latn-CS -> sr_cs_latin). For Windows XP, the language id is
+transformed analoguously (Example: 0c1a -> sr_yu_cyrillic).
+If all these attempts to discover an initial locale from the user's
+environment fail, msgcat defaults to an initial locale of
+.QW C .
+.PP
+When a locale is specified by the user, a
+.QW "best match"
+search is performed during string translation.  For example, if a user
+specifies
+en_GB_Funky, the locales
+.QW en_GB_Funky ,
+.QW en_GB ,
+.QW en
+and
+.MT
+(the empty string)
+are searched in order until a matching translation
+string is found.  If no translation string is available, then
+\fB::msgcat::mcunknown\fR is called.
 .SH "NAMESPACES AND MESSAGE CATALOGS"
 .PP
 Strings stored in the message catalog are stored relative
@@ -177,15 +235,18 @@ source string to be shorter and less prone to typographical
 error.
 .PP
 For example, executing the code
+.PP
 .CS
 \fB::msgcat::mcset\fR en hello "hello from ::"
 namespace eval foo {
-   \fB::msgcat::mcset\fR en hello "hello from ::foo"
+    \fB::msgcat::mcset\fR en hello "hello from ::foo"
 }
 puts [\fB::msgcat::mc\fR hello]
 namespace eval foo {puts [\fB::msgcat::mc\fR hello]}
 .CE
+.PP
 will print
+.PP
 .CS
 hello from ::
 hello from ::foo
@@ -194,27 +255,33 @@ hello from ::foo
 When searching for a translation of a message, the
 message catalog will search first the current namespace,
 then the parent of the current namespace, and so on until
-the global namespace is reached.  This allows child namespaces
-to "inherit" messages from their parent namespace.
+the global namespace is reached.  This allows child namespaces to
+.QW inherit
+messages from their parent namespace.
+.PP
+For example, executing (in the
+.QW en
+locale) the code
 .PP
-For example, executing (in the ``en'' locale) the code 
 .CS
 \fB::msgcat::mcset\fR en m1 ":: message1"
 \fB::msgcat::mcset\fR en m2 ":: message2"
 \fB::msgcat::mcset\fR en m3 ":: message3"
 namespace eval ::foo {
-   \fB::msgcat::mcset\fR en m2 "::foo message2"
-   \fB::msgcat::mcset\fR en m3 "::foo message3"
+    \fB::msgcat::mcset\fR en m2 "::foo message2"
+    \fB::msgcat::mcset\fR en m3 "::foo message3"
 }
 namespace eval ::foo::bar {
-   \fB::msgcat::mcset\fR en m3 "::foo::bar message3"
+    \fB::msgcat::mcset\fR en m3 "::foo::bar message3"
 }
 namespace import \fB::msgcat::mc\fR
 puts "[\fBmc\fR m1]; [\fBmc\fR m2]; [\fBmc\fR m3]"
 namespace eval ::foo {puts "[\fBmc\fR m1]; [\fBmc\fR m2]; [\fBmc\fR m3]"}
 namespace eval ::foo::bar {puts "[\fBmc\fR m1]; [\fBmc\fR m2]; [\fBmc\fR m3]"}
 .CE
+.PP
 will print
+.PP
 .CS
 :: message1; :: message2; :: message3
 :: message1; ::foo message2; ::foo message3
@@ -227,21 +294,33 @@ to the following conditions:
 .IP [1]
 All message files for a package are in the same directory.
 .IP [2]
-The message file name is a msgcat locale specifier (all lowercase)
-followed by ``.msg''.  For example:
+The message file name is a msgcat locale specifier (all lowercase) followed by
+.QW .msg .
+For example:
+.PP
 .CS
-es.msg    -- spanish
-en_gb.msg -- United Kingdom English
+es.msg    \(em spanish
+en_gb.msg \(em United Kingdom English
 .CE
+.PP
+\fIException:\fR The message file for the root locale
+.MT
+is called
+.QW \fBROOT.msg\fR .
+This exception is made so as not to
+cause peculiar behavior, such as marking the message file as
+.QW hidden
+on Unix file systems.
 .IP [3]
-The file contains a series of calls to \fBmcset\fR and
-\fBmcmset\fR, setting the necessary translation strings
+The file contains a series of calls to \fBmcflset\fR and
+\fBmcflmset\fR, setting the necessary translation strings
 for the language, likely enclosed in a \fBnamespace eval\fR
 so that all source strings are tied to the namespace of
 the package. For example, a short \fBes.msg\fR might contain:
+.PP
 .CS
 namespace eval ::mypackage {
-   \fB::msgcat::mcset\fR es "Free Beer!" "Cerveza Gracias!"
+    \fB::msgcat::mcflset\fR "Free Beer!" "Cerveza Gracias!"
 }
 .CE
 .SH "RECOMMENDED MESSAGE SETUP FOR PACKAGES"
@@ -255,8 +334,8 @@ During package installation, create a subdirectory
 .IP [2]
 Copy your *.msg files into that directory.
 .IP [3]
- Add the following command to your package
-initialization script:
+Add the following command to your package initialization script:
+.PP
 .CS
 # load language files, stored in msgs subdirectory
 \fB::msgcat::mcload\fR [file join [file dirname [info script]] msgs]
@@ -268,6 +347,7 @@ to \fBformat\fR might have positionally dependent parameters that
 might need to be repositioned.  For example, it might be
 syntactically desirable to rearrange the sentence structure
 while translating.
+.PP
 .CS
 format "We produced %d units in location %s" $num $city
 format "In location %s we produced %d units" $city $num
@@ -275,19 +355,30 @@ format "In location %s we produced %d units" $city $num
 .PP
 This can be handled by using the positional
 parameters:
+.PP
 .CS
-format "We produced %1\\$d units in location %2\\$s" $num $city
-format "In location %2\\$s we produced %1\\$d units" $num $city
+format "We produced %1\e$d units in location %2\e$s" $num $city
+format "In location %2\e$s we produced %1\e$d units" $num $city
 .CE
 .PP
 Similarly, positional parameters can be used with \fBscan\fR to
-extract values from internationalized strings.
+extract values from internationalized strings. Note that it is not
+necessary to pass the output of \fB::msgcat::mc\fR to \fBformat\fR
+directly; by passing the values to substitute in as arguments, the
+formatting substitution is done directly.
+.PP
+.CS
+\fBmsgcat::mc\fR {Produced %1$d at %2$s} $num $city
+# ... where that key is mapped to one of the
+# human-oriented versions by \fBmsgcat::mcset\fR
+.CE
 .SH CREDITS
 .PP
 The message catalog code was developed by Mark Harrison.
-
 .SH "SEE ALSO"
 format(n), scan(n), namespace(n), package(n)
-
 .SH KEYWORDS
 internationalization, i18n, localization, l10n, message, text, translation
+.\" Local Variables:
+.\" mode: nroff
+.\" End:
diff --git a/doc/namespace.n b/doc/namespace.n
index 5468416..8b26786 100644
--- a/doc/namespace.n
+++ b/doc/namespace.n
@@ -2,28 +2,28 @@
 '\" Copyright (c) 1993-1997 Bell Labs Innovations for Lucent Technologies
 '\" Copyright (c) 1997 Sun Microsystems, Inc.
 '\" Copyright (c) 2000 Scriptics Corporation.
+'\" Copyright (c) 2004-2005 Donal K. Fellows.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\"
 .so man.macros
-.TH namespace n 8.0 Tcl "Tcl Built-In Commands"
+.TH namespace n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 namespace \- create and manipulate contexts for commands and variables
 .SH SYNOPSIS
-\fBnamespace \fR?\fIoption\fR? ?\fIarg ...\fR?
+\fBnamespace \fR?\fIsubcommand\fR? ?\fIarg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBnamespace\fR command lets you create, access, and destroy
 separate contexts for commands and variables.
 See the section \fBWHAT IS A NAMESPACE?\fR below
 for a brief overview of namespaces.
-The legal values of \fIoption\fR are listed below.
-Note that you can abbreviate the \fIoption\fRs.
+The legal values of \fIsubcommand\fR are listed below.
+Note that you can abbreviate the \fIsubcommand\fRs.
 .TP
 \fBnamespace children \fR?\fInamespace\fR? ?\fIpattern\fR?
 Returns a list of all child namespaces that belong to the
@@ -54,7 +54,7 @@ and they will be passed to \fIscript\fR as additional arguments.
 For example, suppose the command
 \fBset script [namespace code {foo bar}]\fR
 is invoked in namespace \fB::a::b\fR.
-Then \fBeval "$script x y"\fR
+Then \fBeval $script [list x y]\fR
 can be executed in any namespace (assuming the value of
 \fBscript\fR has been passed in properly)
 and will have the same effect as the command
@@ -69,7 +69,8 @@ of how this is used to create callback scripts.
 .TP
 \fBnamespace current\fR
 Returns the fully-qualified name for the current namespace.
-The actual name of the global namespace is ``''
+The actual name of the global namespace is
+.MT
 (i.e., an empty string),
 but this command returns \fB::\fR for the global namespace
 as a convenience to programmers.
@@ -82,9 +83,16 @@ If a procedure is currently executing inside the namespace,
 the namespace will be kept alive until the procedure returns;
 however, the namespace is marked to prevent other code from
 looking it up by name.
-If a namespace doesn't exist, this command returns an error.
+If a namespace does not exist, this command returns an error.
 If no namespace names are given, this command does nothing.
 .TP
+\fBnamespace ensemble\fR \fIsubcommand\fR ?\fIarg ...\fR?
+.VS 8.5
+Creates and manipulates a command that is formed out of an ensemble of
+subcommands.  See the section \fBENSEMBLES\fR below for further
+details.
+.VE 8.5
+.TP
 \fBnamespace eval\fR \fInamespace arg\fR ?\fIarg ...\fR?
 Activates a namespace called \fInamespace\fR and evaluates some code
 in that context.
@@ -93,11 +101,12 @@ If more than one \fIarg\fR argument is specified,
 the arguments are concatenated together with a space between each one
 in the same fashion as the \fBeval\fR command,
 and the result is evaluated.
-.br
-.sp
+.RS
+.PP
 If \fInamespace\fR has leading namespace qualifiers
 and any leading namespaces do not exist,
 they are automatically created.
+.RE
 .TP
 \fBnamespace exists\fR \fInamespace\fR
 Returns \fB1\fR if \fInamespace\fR is a valid namespace in the current
@@ -117,10 +126,10 @@ but it may not include any namespace qualifiers.
 That is, the pattern can only specify commands
 in the current (exporting) namespace.
 Each \fIpattern\fR is appended onto the namespace's list of export patterns.
-If the \-\fBclear\fR flag is given,
+If the \fB\-clear\fR flag is given,
 the namespace's export pattern list is reset to empty before any
 \fIpattern\fR arguments are appended.
-If no \fIpattern\fRs are given and the \-\fBclear\fR flag isn't given,
+If no \fIpattern\fRs are given and the \fB\-clear\fR flag is not given,
 this command returns the namespace's current export list.
 .TP
 \fBnamespace forget \fR?\fIpattern pattern ...\fR?
@@ -129,24 +138,37 @@ Each \fIpattern\fR is a simple or qualified name such as
 \fBx\fR, \fBfoo::x\fR or \fBa::b::p*\fR.
 Qualified names contain double colons (\fB::\fR) and qualify a name
 with the name of one or more namespaces.
-Each \fIqualified pattern\fR is qualified with the name of an
-exporting namespace 
+Each
+.QW "qualified pattern"
+is qualified with the name of an exporting namespace
 and may have glob-style special characters in the command name
 at the end of the qualified name.
 Glob characters may not appear in a namespace name.
-For each \fIsimple pattern\fR this command deletes the matching
-commands of the 
+For each
+.QW "simple pattern"
+this command deletes the matching commands of the
 current namespace that were imported from a different namespace.
-For \fIqualified patterns\fR, this command first finds the matching
-exported commands. 
+For
+.QW "qualified patterns" ,
+this command first finds the matching exported commands.
 It then checks whether any of those commands
 were previously imported by the current namespace.
-If so, this command deletes the corresponding imported commands. 
+If so, this command deletes the corresponding imported commands.
 In effect, this un-does the action of a \fBnamespace import\fR command.
 .TP
 \fBnamespace import \fR?\fB\-force\fR? ?\fIpattern\fR \fIpattern ...\fR?
-Imports commands into a namespace.
-Each \fIpattern\fR is a qualified name like
+.VS 8.5
+Imports commands into a namespace, or queries the set of imported
+commands in a namespace.  When no arguments are present,
+\fBnamespace import\fR returns the list of commands in
+the current namespace that have been imported from other
+namespaces.  The commands in the returned list are in
+the format of simple names, with no namespace qualifiers at all.
+This format is suitable for composition with \fBnamespace forget\fR
+(see \fBEXAMPLES\fR below).
+.VE 8.5
+When \fIpattern\fR arguments are present,
+each \fIpattern\fR is a qualified name like
 \fBfoo::x\fR or \fBa::p*\fR.
 That is, it includes the name of an exporting namespace
 and may have glob-style special characters in the command name
@@ -180,12 +202,18 @@ The \fBnamespace inscope\fR command is much like the \fBnamespace eval\fR
 command except that the \fInamespace\fR must already exist,
 and \fBnamespace inscope\fR appends additional \fIarg\fRs
 as proper list elements.
-.br
+.RS
+.PP
+.CS
 \fBnamespace inscope ::foo $script $x $y $z\fR
+.CE
 is equivalent to
+.CS
 \fBnamespace eval ::foo [concat $script [list $x $y $z]]\fR
+.CE
 thus additional arguments will not undergo a second round of substitution,
 as is the case with \fBnamespace eval\fR.
+.RE
 .TP
 \fBnamespace origin \fIcommand\fR
 Returns the fully-qualified name of the original command
@@ -207,6 +235,17 @@ for namespace \fInamespace\fR.
 If \fInamespace\fR is not specified,
 the fully-qualified name of the current namespace's parent is returned.
 .TP
+\fBnamespace path\fR ?\fInamespaceList\fR?
+.\" Should really have the .TP inside the .VS, but that triggers a groff bug
+.VS 8.5
+Returns the command resolution path of the current namespace. If
+\fInamespaceList\fR is specified as a list of named namespaces, the
+current namespace's command resolution path is set to those namespaces
+and returns the empty list. The default command resolution path is
+always empty. See the section \fBNAME RESOLUTION\fR below for an
+explanation of the rules regarding name resolution.
+.VE 8.5
+.TP
 \fBnamespace qualifiers\fR \fIstring\fR
 Returns any leading namespace qualifiers for \fIstring\fR.
 Qualifiers are namespace names separated by double colons (\fB::\fR).
@@ -228,6 +267,27 @@ This command is the complement of the \fBnamespace qualifiers\fR command.
 It does not check whether the namespace names are, in fact,
 the names of currently defined namespaces.
 .TP
+\fBnamespace upvar\fR \fInamespace\fR \fIotherVar myVar \fR?\fIotherVar myVar \fR...
+This command arranges for one or more local variables in the current
+procedure to refer to variables in \fInamespace\fR. The namespace name is
+resolved as described in section \fBNAME RESOLUTION\fR.
+The command
+\fBnamespace upvar $ns a b\fR has the same behaviour as
+\fBupvar 0 ${ns}::a b\fR, with the sole exception of the resolution rules
+used for qualified namespace or variable names.
+\fBnamespace upvar\fR returns an empty string.
+.TP
+\fBnamespace unknown\fR ?\fIscript\fR?
+Sets or returns the unknown command handler for the current namespace.
+The handler is invoked when a command called from within the namespace
+cannot be found (in either the current namespace or the global namespace).
+The \fIscript\fR argument, if given, should be a well
+formed list representing a command name and optional arguments. When
+the handler is invoked, the full invocation line will be appended to the
+script and the result evaluated in the context of the namespace. The
+default handler for all namespaces is \fB::unknown\fR. If no argument
+is given, it returns the handler for the current namespace.
+.TP
 \fBnamespace which\fR ?\-\fBcommand\fR? ?\-\fBvariable\fR? \fIname\fR
 Looks up \fIname\fR as either a command or variable
 and returns its fully-qualified name.
@@ -237,7 +297,7 @@ this command returns a fully-qualified name in the global namespace.
 If the command or variable does not exist,
 this command returns an empty string.  If the variable has been
 created but not defined, such as with the \fBvariable\fR command
-or through a \fBtrace\fR on the variable, this command will return the 
+or through a \fBtrace\fR on the variable, this command will return the
 fully-qualified name of the variable.
 If no flag is given, \fIname\fR is treated as a command name.
 See the section \fBNAME RESOLUTION\fR below for an explanation of
@@ -246,7 +306,7 @@ the rules regarding name resolution.
 .PP
 A namespace is a collection of commands and variables.
 It encapsulates the commands and variables to ensure that they
-won't interfere with the commands and variables of other namespaces.
+will not interfere with the commands and variables of other namespaces.
 Tcl has always had one such collection,
 which we refer to as the \fIglobal namespace\fR.
 The global namespace holds all global variables and commands.
@@ -317,8 +377,9 @@ Qualified names are similar to the hierarchical path names for
 Unix files or Tk widgets,
 except that \fB::\fR is used as the separator
 instead of \fB/\fR or \fB.\fR.
-The topmost or global namespace has the name ``'' (i.e., an empty string),
-although \fB::\fR is a synonym.
+The topmost or global namespace has the name
+.MT
+(i.e., an empty string), although \fB::\fR is a synonym.
 As an example, the name \fB::safe::interp::create\fR
 refers to the command \fBcreate\fR in the namespace \fBinterp\fR
 that is a child of namespace \fB::safe\fR,
@@ -377,11 +438,19 @@ If you provide a fully-qualified name that starts with a \fB::\fR,
 there is no question about what command, variable, or namespace
 you mean.
 However, if the name does not start with a \fB::\fR
-(i.e., is \fIrelative\fR), 
-Tcl follows a fixed rule for looking it up:
-Command and variable names are always resolved
+(i.e., is \fIrelative\fR),
+Tcl follows basic rules for looking it up:
+Variable names are always resolved
 by looking first in the current namespace,
 and then in the global namespace.
+.VS 8.5
+Command names are also always resolved by looking in the current
+namespace first. If not found there, they are searched for in every
+namespace on the current namespace's command path (which is empty by
+default). If not found there, command names are looked up in the
+global namespace (or, failing that, are processed by the \fBunknown\fR
+command.)
+.VE 8.5
 Namespace names, on the other hand, are always resolved
 by looking in only the current namespace.
 .PP
@@ -409,7 +478,7 @@ set traceLevel 0
 }
 .CE
 Here Tcl looks for \fBtraceLevel\fR first in the namespace \fBFoo::Debug\fR.
-Since it is not found there, Tcl then looks for it 
+Since it is not found there, Tcl then looks for it
 in the global namespace.
 The variable \fBFoo::traceLevel\fR is completely ignored
 during the name resolution process.
@@ -484,7 +553,7 @@ from a namespace that that namespace exported
 with a \fBnamespace export\fR command.
 .PP
 Importing \fIevery\fR command from a namespace is generally
-a bad idea since you don't know what you will get.
+a bad idea since you do not know what you will get.
 It is better to import just the specific commands you need.
 For example, the command
 .CS
@@ -561,12 +630,14 @@ may be imported by other namespaces.
 If a \fBnamespace import\fR command specifies a command
 that is not exported, the command is not imported.
 .SH "SCOPED SCRIPTS"
+.PP
 The \fBnamespace code\fR command is the means by which a script may be
 packaged for evaluation in a namespace other than the one in which it
 was created.  It is used most often to create event handlers, Tk bindings,
 and traces for evaluation in the global context.  For instance, the following
-code indicates how to direct a variable trace callback into the current
+code indicates how to direct a variable \fBtrace\fR callback into the current
 namespace:
+.PP
 .CS
 \fBnamespace eval\fR a {
    variable b
@@ -575,14 +646,175 @@ namespace:
       puts "the value of $n1 has changed to $var"
       return
    }
-   trace variable b w [\fBnamespace code\fR theTraceCallback]
+   trace add variable b write [\fBnamespace code\fR theTraceCallback]
 }
 set a::b c
 .CE
+.PP
 When executed, it prints the message:
+.PP
 .CS
 the value of a::b has changed to c
 .CE
+.SH ENSEMBLES
+.PP
+.VS 8.5
+The \fBnamespace ensemble\fR is used to create and manipulate ensemble
+commands, which are commands formed by grouping subcommands together.
+The commands typically come from the current namespace when the
+ensemble was created, though this is configurable.  Note that there
+may be any number of ensembles associated with any namespace
+(including none, which is true of all namespaces by default), though
+all the ensembles associated with a namespace are deleted when that
+namespace is deleted.  The link between an ensemble command and its
+namespace is maintained however the ensemble is renamed.
+.PP
+Three subcommands of the \fBnamespace ensemble\fR command are defined:
+.TP
+\fBnamespace ensemble create\fR ?\fIoption value ...\fR?
+Creates a new ensemble command linked to the current namespace,
+returning the fully qualified name of the command created.  The
+arguments to \fBnamespace ensemble create\fR allow the configuration
+of the command as if with the \fBnamespace ensemble configure\fR
+command.  If not overridden with the \fB\-command\fR option, this
+command creates an ensemble with exactly the same name as the linked
+namespace.  See the section \fBENSEMBLE OPTIONS\fR below for a full
+list of options supported and their effects.
+.TP
+\fBnamespace ensemble configure \fIcommand\fR ?\fIoption\fR? ?\fIvalue ...\fR?
+Retrieves the value of an option associated with the ensemble command
+named \fIcommand\fR, or updates some options associated with that
+ensemble command.  See the section \fBENSEMBLE OPTIONS\fR below for a
+full list of options supported and their effects.
+.TP
+\fBnamespace ensemble exists\fR \fIcommand\fR
+Returns a boolean value that describes whether the command
+\fIcommand\fR exists and is an ensemble command.  This command only
+ever returns an error if the number of arguments to the command is
+wrong.
+.PP
+When called, an ensemble command takes its first argument and looks it
+up (according to the rules described below) to discover a list of
+words to replace the ensemble command and subcommand with.  The
+resulting list of words is then evaluated (with no further
+substitutions) as if that was what was typed originally (i.e. by
+passing the list of words through \fBTcl_EvalObjv\fR) and returning
+the result of the command.  Note that it is legal to make the target
+of an ensemble rewrite be another (or even the same) ensemble
+command.  The ensemble command will not be visible through the use of
+the \fBuplevel\fR or \fBinfo level\fR commands.
+.SS "ENSEMBLE OPTIONS"
+.PP
+The following options, supported by the \fBnamespace ensemble
+create\fR and \fBnamespace ensemble configure\fR commands, control how
+an ensemble command behaves:
+.TP
+\fB\-map\fR
+When non-empty, this option supplies a dictionary that provides a
+mapping from subcommand names to a list of prefix words to substitute
+in place of the ensemble command and subcommand words (in a manner
+similar to an alias created with \fBinterp alias\fR; the words are not
+reparsed after substitution); if the first word of any target is not
+fully qualified when set, it is assumed to be relative to the
+\fIcurrent\fR namespace and changed to be exactly that (that is, it is
+always fully qualified when read). When this option is empty, the mapping
+will be from the local name of the subcommand to its fully-qualified
+name.  Note that when this option is non-empty and the
+\fB\-subcommands\fR option is empty, the ensemble subcommand names
+will be exactly those words that have mappings in the dictionary.
+.TP
+\fB\-prefixes\fR
+This option (which is enabled by default) controls whether the
+ensemble command recognizes unambiguous prefixes of its subcommands.
+When turned off, the ensemble command requires exact matching of
+subcommand names.
+.TP
+\fB\-subcommands\fR
+When non-empty, this option lists exactly what subcommands are in the
+ensemble.  The mapping for each of those commands will be either whatever
+is defined in the \fB\-map\fR option, or to the command with the same
+name in the namespace linked to the ensemble.  If this option is
+empty, the subcommands of the namespace will either be the keys of the
+dictionary listed in the \fB\-map\fR option or the exported commands
+of the linked namespace at the time of the invocation of the ensemble
+command.
+.TP
+\fB\-unknown\fR
+When non-empty, this option provides a partial command (to which all
+the words that are arguments to the ensemble command, including the
+fully-qualified name of the ensemble, are appended) to handle the case
+where an ensemble subcommand is not recognized and would otherwise
+generate an error.  When empty (the default) an error (in the style of
+\fBTcl_GetIndexFromObj\fR) is generated whenever the ensemble is
+unable to determine how to implement a particular subcommand.  See
+\fBUNKNOWN HANDLER BEHAVIOUR\fR for more details.
+.PP
+The following extra option is allowed by \fBnamespace ensemble
+create\fR:
+.TP
+\fB\-command\fR
+This write-only option allows the name of the ensemble created by
+\fBnamespace ensemble create\fR to be anything in any existing
+namespace.  The default value for this option is the fully-qualified
+name of the namespace in which the \fBnamespace ensemble create\fR
+command is invoked.
+.PP
+The following extra option is allowed by \fBnamespace ensemble
+configure\fR:
+.TP
+\fB\-namespace\fR
+This read-only option allows the retrieval of the fully-qualified name
+of the namespace which the ensemble was created within.
+.SS "UNKNOWN HANDLER BEHAVIOUR"
+.PP
+If an unknown handler is specified for an ensemble, that handler is
+called when the ensemble command would otherwise return an error due
+to it being unable to decide which subcommand to invoke. The exact
+conditions under which that occurs are controlled by the
+\fB\-subcommands\fR, \fB\-map\fR and \fB\-prefixes\fR options as
+described above.
+.PP
+To execute the unknown handler, the ensemble mechanism takes the
+specified \fB\-unknown\fR option and appends each argument of the
+attempted ensemble command invocation (including the ensemble command
+itself, expressed as a fully qualified name). It invokes the resulting
+command in the scope of the attempted call. If the execution of the
+unknown handler terminates normally, the ensemble engine reparses the
+subcommand (as described below) and tries to dispatch it again, which
+is ideal for when the ensemble's configuration has been updated by the
+unknown subcommand handler. Any other kind of termination of the
+unknown handler is treated as an error.
+.PP
+The result of the unknown handler is expected to be a list (it is an
+error if it is not). If the list is an empty list, the ensemble
+command attempts to look up the original subcommand again and, if it
+is not found this time, an error will be generated just as if the
+\fB\-unknown\fR handler was not there (i.e. for any particular
+invocation of an ensemble, its unknown handler will be called at most
+once.) This makes it easy for the unknown handler to update the
+ensemble or its backing namespace so as to provide an implementation
+of the desired subcommand and reparse.
+.PP
+When the result is a non-empty list, the words of that list are used
+to replace the ensemble command and subcommand, just as if they had
+been looked up in the \fB\-map\fR. It is up to the unknown handler to
+supply all namespace qualifiers if the implementing subcommand is not
+in the namespace of the caller of the ensemble command. Also note that
+when ensemble commands are chained (e.g. if you make one of the
+commands that implement an ensemble subcommand into an ensemble, in a
+manner similar to the \fBtext\fR widget's tag and mark subcommands) then the
+rewrite happens in the context of the caller of the outermost
+ensemble. That is to say that ensembles do not in themselves place any
+namespace contexts on the Tcl call stack.
+.PP
+Where an empty \fB\-unknown\fR handler is given (the default), the
+ensemble command will generate an error message based on the list of
+commands that the ensemble has defined (formatted similarly to the
+error message from \fBTcl_GetIndexFromObj\fR). This is the error that
+will be thrown when the subcommand is still not recognized during
+reparsing. It is also an error for an \fB\-unknown\fR handler to
+delete its namespace.
+.VE 8.5
 .SH EXAMPLES
 Create a namespace containing a variable and an exported command:
 .CS
@@ -599,20 +831,38 @@ Create a namespace containing a variable and an exported command:
 Call the command defined in the previous example in various ways.
 .CS
 # Direct call
-foo::grill
+::foo::grill
+
+# Use the command resolution path to find the name
+\fBnamespace eval\fR boo {
+   \fBnamespace path\fR ::foo
+   grill
+}
 
 # Import into current namespace, then call local alias
-namespace import foo::grill
+\fBnamespace import\fR foo::grill
 grill
+
+# Create two ensembles, one with the default name and one with a
+# specified name.  Then call through the ensembles.
+\fBnamespace eval\fR foo {
+   \fBnamespace ensemble\fR create
+   \fBnamespace ensemble\fR create -command ::foobar
+}
+foo grill
+foobar grill
 .CE
 .PP
 Look up where the command imported in the previous example came from:
 .CS
 puts "grill came from [\fBnamespace origin\fR grill]"
 .CE
-
+.PP
+Remove all imported commands from the current namespace:
+.CS
+namespace forget {*}[namespace import]
+.CE
 .SH "SEE ALSO"
-variable(n)
-
+interp(n), upvar(n), variable(n)
 .SH KEYWORDS
-exported, internal, variable
+command, ensemble, exported, internal, variable
diff --git a/doc/open.n b/doc/open.n
index ae0bcbc..88283bb 100644
--- a/doc/open.n
+++ b/doc/open.n
@@ -19,7 +19,6 @@ open \- Open a file-based or command pipeline channel
 .br
 \fBopen \fIfileName access permissions\fR
 .BE
-
 .SH DESCRIPTION
 .PP
 This command opens a file, serial port, or command pipeline and returns a
@@ -43,22 +42,30 @@ Open the file for both reading and writing; the file must
 already exist.
 .TP 15
 \fBw\fR
-Open the file for writing only.  Truncate it if it exists.  If it doesn't
+Open the file for writing only.  Truncate it if it exists.  If it does not
 exist, create a new file.
 .TP 15
 \fBw+\fR
 Open the file for reading and writing.  Truncate it if it exists.
-If it doesn't exist, create a new file.
+If it does not exist, create a new file.
 .TP 15
 \fBa\fR
-Open the file for writing only.  If the file doesn't exist,
+Open the file for writing only.  If the file does not exist,
 create a new empty file.
 Set the file pointer to the end of the file prior to each write.
 .TP 15
 \fBa+\fR
-Open the file for reading and writing.  If the file doesn't exist,
+Open the file for reading and writing.  If the file does not exist,
 create a new empty file.
 Set the initial access position  to the end of the file.
+.VS 8.5
+.PP
+All of the legal \fIaccess\fR values above may have the character
+\fBb\fR added as the second or third character in the value to
+indicate that the opened channel should be configured with the
+\fB\-translation binary\fR option, making the channel suitable for 
+reading or writing of binary data.
+.VE 8.5
 .PP
 In the second form, \fIaccess\fR consists of a list of any of the
 following flags, all of which have the standard POSIX meanings.
@@ -75,9 +82,14 @@ Open the file for both reading and writing.
 .TP 15
 \fBAPPEND\fR
 Set the file pointer to the end of the file prior to each write.
+.VS 8.5
+.TP 15
+\fBBINARY\fR
+Configure the opened channel with the \fB\-translation binary\fR option.
+.VE 8.5
 .TP 15
 \fBCREAT\fR
-Create the file if it doesn't already exist (without this flag it
+Create the file if it does not already exist (without this flag it
 is an error for the file not to exist).
 .TP 15
 \fBEXCL\fR
@@ -104,18 +116,11 @@ If a new file is created as part of opening it, \fIpermissions\fR
 (an integer) is used to set the permissions for the new file in
 conjunction with the process's file mode creation mask.
 \fIPermissions\fR defaults to 0666.
-.PP
-Note that if you are going to be reading or writing binary data from
-the channel created by this command, you should use the
-\fBfconfigure\fR command to change the \fB-translation\fR option of
-the channel to \fBbinary\fR before transferring any binary data.  This
-is in contrast to the ``b'' character passed as part of the equivalent
-of the \fIaccess\fR parameter to some versions of the C library
-\fIfopen()\fR function.
-
 .SH "COMMAND PIPELINES"
 .PP
-If the first character of \fIfileName\fR is ``|'' then the
+If the first character of \fIfileName\fR is
+.QW |
+then the
 remaining characters of \fIfileName\fR are treated as a list of arguments
 that describe a command pipeline to invoke, in the same style as the
 arguments for \fBexec\fR.
@@ -140,7 +145,6 @@ returned (a silent \fBclose\fR with -blocking 0).
 It is often useful to use the \fBfileevent\fR command with pipelines
 so other processing may happen at the same time as running the command
 in the background.
-.VS 8.4
 .SH "SERIAL COMMUNICATIONS"
 .PP
 If \fIfileName\fR refers to a serial port, then the specified serial port
@@ -156,8 +160,14 @@ This option is a set of 4 comma-separated values: the baud rate, parity,
 number of data bits, and number of stop bits for this serial port.  The
 \fIbaud\fR rate is a simple integer that specifies the connection speed.
 \fIParity\fR is one of the following letters: \fBn\fR, \fBo\fR, \fBe\fR,
-\fBm\fR, \fBs\fR; respectively signifying the parity options of ``none'',
-``odd'', ``even'', ``mark'', or ``space''.  \fIData\fR is the number of
+\fBm\fR, \fBs\fR; respectively signifying the parity options of
+.QW none ,
+.QW odd ,
+.QW even ,
+.QW mark ,
+or
+.QW space .
+\fIData\fR is the number of
 data bits and should be an integer from 5 to 8, while \fIstop\fR is the
 number of stop bits and should be the integer 1 or 2.
 .TP
@@ -165,19 +175,21 @@ number of stop bits and should be the integer 1 or 2.
 (Windows and Unix). This option is used to setup automatic handshake
 control. Note that not all handshake types maybe supported by your operating
 system. The \fItype\fR parameter is case-independent.
-.sp
+.RS
+.PP
 If \fItype\fR is \fBnone\fR then any handshake is switched off.
 \fBrtscts\fR activates hardware handshake. Hardware handshake signals
 are described below.
 For software handshake \fBxonxoff\fR the handshake characters can be redefined
-with \fB-xchar\fR.
+with \fB\-xchar\fR.
 An additional hardware handshake \fBdtrdsr\fR is available only under Windows.
 There is no default handshake configuration, the initial value depends
 on your operating system settings.
-The \fB-handshake\fR option cannot be queried.
+The \fB\-handshake\fR option cannot be queried.
+.RE
 .TP
 \fB\-queue\fR
-(Windows and Unix). The \fB-queue\fR option can only be queried.
+(Windows and Unix). The \fB\-queue\fR option can only be queried.
 It returns a list of two integers representing the current number
 of bytes in the input and output queue respectively.
 .TP
@@ -186,7 +198,7 @@ of bytes in the input and output queue respectively.
 read operations. It specifies the maximum interval between the
 reception of two bytes in milliseconds.
 For Unix systems the granularity is 100 milliseconds.
-The \fB-timeout\fR option does not affect write operations or
+The \fB\-timeout\fR option does not affect write operations or
 nonblocking reads.
 This option cannot be queried.
 .TP
@@ -197,13 +209,13 @@ The \fIsignal\fR names are case-independent.
 \fB{RTS 1 DTR 0}\fR sets the RTS output to high and the DTR output to low.
 The BREAK condition (see below) is enabled and disabled with \fB{BREAK 1}\fR and
 \fB{BREAK 0}\fR respectively.
-It's not a good idea to change the \fBRTS\fR (or \fBDTR\fR) signal
+It is not a good idea to change the \fBRTS\fR (or \fBDTR\fR) signal
 with active hardware handshake \fBrtscts\fR (or \fBdtrdsr\fR).
 The result is unpredictable.
-The \fB-ttycontrol\fR option cannot be queried.
+The \fB\-ttycontrol\fR option cannot be queried.
 .TP
 \fB\-ttystatus\fR
-(Windows and Unix). The \fB-ttystatus\fR option can only be
+(Windows and Unix). The \fB\-ttystatus\fR option can only be
 queried.  It returns the current modem status and handshake input signals
 (see below).
 The result is a list of signal,value pairs with a fixed order,
@@ -239,7 +251,6 @@ In case of a serial communication error, \fBread\fR or \fBputs\fR
 returns a general Tcl file I/O error.
 \fBfconfigure -lasterror\fR can be called to get a list of error details.
 See below for an explanation of the various error codes.
-
 .SH "SERIAL PORT SIGNALS"
 .PP
 RS-232 is the most commonly used standard electrical interface for serial
@@ -250,7 +261,6 @@ lines and handshaking. Here we are using the terms \fIworkstation\fR for
 your computer and \fImodem\fR for the external device, because some signal
 names (DCD, RI) come from modems. Of course your external device may use
 these signal lines for other purposes.
-
 .IP \fBTXD(output)\fR
 \fBTransmitted Data:\fR Outgoing serial data.
 .IP \fBRXD(input)\fR
@@ -270,8 +280,9 @@ serial port is opened.
 \fBData Set Ready:\fR The complement to DTR. Tells the workstation that the
 modem is ready to establish a link.
 .IP \fBDCD(input)\fR
-\fBData Carrier Detect:\fR This line becomes active when a modem detects
-a "Carrier" signal.
+\fBData Carrier Detect:\fR This line becomes active when a modem detects a
+.QW Carrier
+signal.
 .IP \fBRI(input)\fR
 \fBRing Indicator:\fR Goes active when the modem detects an incoming call.
 .IP \fBBREAK\fR
@@ -281,17 +292,15 @@ milliseconds.  Normally a receive or transmit data signal stays at the mark
 (on=1) voltage until the next character is transferred. A BREAK is sometimes
 used to reset the communications line or change the operating mode of
 communications hardware.
-
 .SH "ERROR CODES (Windows only)"
 .PP
 A lot of different errors may occur during serial read operations or during
 event polling in background. The external device may have been switched
 off, the data lines may be noisy, system buffers may overrun or your mode
-settings may be wrong.  That's why a reliable software should always
+settings may be wrong.  That is why a reliable software should always
 \fBcatch\fR serial read operations.  In cases of an error Tcl returns a
 general file I/O error.  Then \fBfconfigure -lasterror\fR may help to
 locate the problem.  The following error codes may be returned.
-
 .TP 10
 \fBRXOVER\fR
 Windows input buffer overrun. The data comes faster than your scripts reads
@@ -320,8 +329,6 @@ may cause this error.
 .TP 10
 \fBBREAK\fR
 A BREAK condition has been detected by your UART (see above).
-.VE
-
 .SH "PORTABILITY ISSUES"
 .TP
 \fBWindows \fR(all versions)
@@ -356,7 +363,8 @@ standard input from a pipe and send standard output to a pipe run
 synchronously.  Command pipelines that do not execute 16-bit DOS
 applications run asynchronously and can be opened for both reading and
 writing.  
-.sp
+.RS
+.PP
 When running Tcl interactively, there may be some strange interactions
 between the real console, if one is present, and a command pipeline that uses
 standard input or output.  If a command pipeline is opened for reading from
@@ -369,7 +377,7 @@ console at the same time.  If the command pipeline is started from a script,
 so that Tcl is not accessing the console, or if the command pipeline does
 not use standard input or output, but is redirected from or to a file, then
 the above problems do not occur.  
-.sp
+.PP
 Whether or not Tcl is running interactively, if a command pipeline is opened
 for reading from a 16-bit DOS application, the call to \fBopen\fR will not
 return until end-of-file has been received from the command pipeline's
@@ -377,16 +385,16 @@ standard output.  If a command pipeline is opened for writing to a 16-bit DOS
 application, no data will be sent to the command pipeline's standard output
 until the pipe is actually closed.  This problem occurs because 16-bit DOS
 applications are run synchronously, as described above.  
+.RE
 .TP
 \fBUnix\fR\0\0\0\0\0\0\0
 Valid values for \fIfileName\fR to open a serial port are generally of the
 form \fB/dev/tty\fIX\fR, where \fIX\fR is \fBa\fR or \fBb\fR, but the name
 of any pseudo-file that maps to a serial port may be used.
-.VS 8.4
 Advanced configuration options are only supported for serial ports
 when Tcl is built to use the POSIX serial interface.
-.VE 8.4
-.sp
+.RS
+.PP
 When running Tcl interactively, there may be some strange interactions
 between the console, if one is present, and a command pipeline that uses
 standard input.  If a command pipeline is opened for reading, some
@@ -396,9 +404,10 @@ both Tcl and the child application are competing for the console at the
 same time.  If the command pipeline is started from a script, so that Tcl is
 not accessing the console, or if the command pipeline does not use standard
 input, but is redirected from a file, then the above problem does not occur.  
-.LP
-See the PORTABILITY ISSUES section of the \fBexec\fR command for additional
-information not specific to command pipelines about executing
+.RE
+.PP
+See the \fBPORTABILITY ISSUES\fR section of the \fBexec\fR command for
+additional information not specific to command pipelines about executing
 applications on the various platforms
 .SH "EXAMPLE"
 Open a command pipeline and catch any errors:
@@ -409,11 +418,9 @@ if {[catch {close $fl} err]} {
     puts "ls command failed: $err"
 }
 .CE
-
 .SH "SEE ALSO"
 file(n), close(n), filename(n), fconfigure(n), gets(n), read(n),
 puts(n), exec(n), pid(n), fopen(3)
-
 .SH KEYWORDS
 access mode, append, create, file, non-blocking, open, permissions,
 pipeline, process, serial
diff --git a/doc/package.n b/doc/package.n
index 60be18b..d4fe657 100644
--- a/doc/package.n
+++ b/doc/package.n
@@ -15,13 +15,16 @@ package \- Facilities for package loading and version control
 \fBpackage forget ?\fIpackage package ...\fR?
 \fBpackage ifneeded \fIpackage version\fR ?\fIscript\fR?
 \fBpackage names\fR
-\fBpackage present \fR?\fB\-exact\fR? \fIpackage \fR?\fIversion\fR?
+\fBpackage present \fIpackage \fR?\fIrequirement...\fR?
+\fBpackage present \-exact \fIpackage version\fR
 \fBpackage provide \fIpackage \fR?\fIversion\fR?
-\fBpackage require \fR?\fB\-exact\fR? \fIpackage \fR?\fIversion\fR?
+\fBpackage require \fIpackage \fR?\fIrequirement...\fR?
+\fBpackage require \-exact \fIpackage version\fR
 \fBpackage unknown \fR?\fIcommand\fR?
 \fBpackage vcompare \fIversion1 version2\fR
 \fBpackage versions \fIpackage\fR
-\fBpackage vsatisfies \fIversion1 version2\fR
+\fBpackage vsatisfies \fIversion requirement...\fR
+\fBpackage prefer \fR?\fBlatest\fR|\fBstable\fR?
 .fi
 .BE
 
@@ -74,7 +77,8 @@ interpreter for which a version has been provided (via
 script is available.
 The order of elements in the list is arbitrary.
 .TP
-\fBpackage present \fR?\fB\-exact\fR? \fIpackage \fR?\fIversion\fR?
+\fBpackage present\fR ?\fB\-exact\fR? \fIpackage\fR ?\fIrequirement...\fR?
+.
 This command is equivalent to \fBpackage require\fR except that it
 does not try and load the package if it is not already loaded.
 .TP
@@ -90,25 +94,34 @@ returns the version number that is currently provided, or an
 empty string if no \fBpackage provide\fR command has been
 invoked for \fIpackage\fR in this interpreter.  
 .TP
-\fBpackage require \fR?\fB\-exact\fR? \fIpackage \fR?\fIversion\fR?
+\fBpackage require\fR \fIpackage \fR?\fIrequirement...\fR?
 This command is typically invoked by Tcl code that wishes to use
 a particular version of a particular package.  The arguments
 indicate which package is wanted, and the command ensures that
 a suitable version of the package is loaded into the interpreter.
 If the command succeeds, it returns the version number that is
 loaded;  otherwise it generates an error.
-If both the \fB\-exact\fR
-switch and the \fIversion\fR argument are specified then only the
-given version is acceptable.  If \fB\-exact\fR is omitted but
-\fIversion\fR is specified, then versions later than \fIversion\fR
-are also acceptable as long as they have the same major version
-number as \fIversion\fR.
-If both \fB\-exact\fR and \fIversion\fR are omitted then any
-version whatsoever is acceptable.
+.RS
+.PP
+A suitable version of the package is any version which satisfies at
+least one of the requirements, per the rules of \fBpackage
+vsatisfies\fR. If multiple versions are suitable the implementation
+with the highest version is chosen. This last part is additionally
+influenced by the selection mode set with \fBpackage prefer\fR.
+.PP
+In the
+.QW stable
+selection mode the command will select the highest
+stable version satisfying the requirements, if any. If no stable
+version satisfies the requirements, the highest unstable version
+satisfying the requirements will be selected.  In the
+.QW latest
+selection mode the command will accept the highest version satisfying
+all the requirements, regardless of its stableness.
+.PP
 If a version of \fIpackage\fR has already been provided (by invoking
 the \fBpackage provide\fR command), then its version number must
-satisfy the criteria given by \fB\-exact\fR and \fIversion\fR and
-the command returns immediately.
+satisfy the \fIrequirement\fRs and the command returns immediately.
 Otherwise, the command searches the database of information provided by
 previous \fBpackage ifneeded\fR commands to see if an acceptable
 version of the package is available.
@@ -124,20 +137,28 @@ it completes, Tcl checks again to see if the package is now provided
 or if there is a \fBpackage ifneeded\fR script for it.
 If all of these steps fail to provide an acceptable version of the
 package, then the command returns an error.
+.RE
+.TP
+\fBpackage require \-exact \fIpackage version\fR
+This form of the command is used when only the given \fIversion\fR
+of \fIpackage\fR is acceptable to the caller.  This command is
+equivalent to \fBpackage require \fIpackage version\fR-\fIversion\fR.
 .TP
 \fBpackage unknown \fR?\fIcommand\fR?
-This command supplies a ``last resort'' command to invoke during
+This command supplies a
+.QW "last resort"
+command to invoke during
 \fBpackage require\fR if no suitable version of a package can be found
 in the \fBpackage ifneeded\fR database.
 If the \fIcommand\fR argument is supplied, it contains the first part
 of a command;  when the command is invoked during a \fBpackage require\fR
-command, Tcl appends two additional arguments giving the desired package
-name and version.
+command, Tcl appends one or more additional arguments giving the desired
+package name and requirements.
 For example, if \fIcommand\fR is \fBfoo bar\fR and later the command
 \fBpackage require test 2.4\fR is invoked, then Tcl will execute
 the command \fBfoo bar test 2.4\fR to load the package.
-If no version number is supplied to the \fBpackage require\fR command,
-then the version argument for the invoked command will be an empty string.
+If no requirements are supplied to the \fBpackage require\fR command,
+then only the name will be added to invoked command.
 If the \fBpackage unknown\fR command is invoked without a \fIcommand\fR
 argument, then the current \fBpackage unknown\fR script is returned,
 or an empty string if there is none.
@@ -154,11 +175,107 @@ Returns a list of all the version numbers of \fIpackage\fR
 for which information has been provided by \fBpackage ifneeded\fR
 commands.
 .TP
-\fBpackage vsatisfies \fIversion1 version2\fR
-Returns 1 if scripts written for \fIversion2\fR will work unchanged
-with \fIversion1\fR (i.e. \fIversion1\fR is equal to or greater
-than \fIversion2\fR and they both have the same major version
-number), 0 otherwise.
+\fBpackage vsatisfies \fIversion requirement...\fR
+Returns 1 if the \fIversion\fR satisfies at least one of the given
+requirements, and 0 otherwise. Each \fIrequirement\fR is allowed to
+have any of the forms:
+.RS
+.TP
+min
+This form is called
+.QW min-bounded .
+.TP
+min-
+This form is called
+.QW min-unbound .
+.TP
+min-max
+This form is called
+.QW bounded .
+.RE
+.RS
+.PP
+where
+.QW min
+and
+.QW max
+are valid version numbers. The legacy syntax is
+a special case of the extended syntax, keeping backward
+compatibility. Regarding satisfaction the rules are:
+.RE
+.RS
+.IP [1]
+The \fIversion\fR has to pass at least one of the listed
+\fIrequirement\fRs to be satisfactory.
+.IP [2]
+A version satisfies a
+.QW bounded
+requirement when
+.RS
+.IP [a]
+For \fImin\fR equal to the \fImax\fR if, and only if the \fIversion\fR
+is equal to the \fImin\fR.
+.IP [b]
+Otherwise if, and only if the \fIversion\fR is greater than or equal
+to the \fImin\fR, and less than the \fImax\fR, where both \fImin\fR
+and \fImax\fR have been padded internally with
+.QW a0 .
+Note that while the comparison to \fImin\fR is inclusive, the
+comparison to \fImax\fR is exclusive.
+.RE
+.IP [3]
+A
+.QW min-bounded
+requirement is a
+.QW bounded
+requirement in disguise,
+with the \fImax\fR part implicitly specified as the next higher major
+version number of the \fImin\fR part. A version satisfies it per the
+rules above.
+.IP [4]
+A \fIversion\fR satisfies a
+.QW min-unbound
+requirement if, and only if it is greater than or equal to the
+\fImin\fR, where the \fImin\fR has been padded internally with
+.QW a0 .
+There is no constraint to a maximum.
+.RE
+.TP
+\fBpackage prefer \fR?\fBlatest\fR|\fBstable\fR?
+With no arguments, the commands returns either
+.QW latest
+or
+.QW stable ,
+whichever describes the current mode of selection logic used by
+\fBpackage require\fR.
+.RS
+.PP
+When passed the argument
+.QW latest ,
+it sets the selection logic mode to
+.QW latest .
+.PP
+When passed the argument
+.QW stable ,
+if the mode is already
+.QW stable ,
+that value is kept.  If the mode is already
+.QW latest ,
+then the attempt to set it back to
+.QW stable
+is ineffective and the mode value remains
+.QW latest .
+.PP
+When passed any other value as an argument, raise an invalid argument
+error.
+.PP
+When an interpreter is created, its initial selection mode value is set to
+.QW stable
+unless the environment variable \fBTCL_PKG_PREFER_LATEST\fR
+is set.  If that environment variable is defined (with any value) then
+the initial (and permanent) selection mode value is set to
+.QW latest .
+.RE
 .SH "VERSION NUMBERS"
 .PP
 Version numbers consist of one or more decimal numbers separated
@@ -170,6 +287,30 @@ For example, version 2.1 is later than 1.3 and version
 3.4.6 is later than 3.3.5.
 Missing fields are equivalent to zeroes:  version 1.3 is the
 same as version 1.3.0 and 1.3.0.0, so it is earlier than 1.3.1 or 1.3.0.2.
+In addition, the letters
+.QW a
+(alpha) and/or
+.QW b
+(beta) may appear
+exactly once to replace a dot for separation. These letters
+semantically add a negative specifier into the version, where
+.QW a
+is \-2, and
+.QW b
+is \-1. Each may be specified only once, and
+.QW a
+or
+.QW b
+are mutually exclusive in a specifier. Thus 1.3a1 becomes (semantically)
+1.3.\-2.1, 1.3b1 is 1.3.\-1.1. Negative numbers are not directly allowed
+in version specifiers.
+A version number not containing the letters
+.QW a
+or
+.QW b
+as specified
+above is called a \fBstable\fR version, whereas presence of the letters
+causes the version to be called is \fBunstable\fR.
 A later version number is assumed to be upwards compatible with
 an earlier version number as long as both versions have the same
 major version number.
@@ -183,7 +324,7 @@ to work unmodified with either version 1.7.3 or version 3.1.
 The recommended way to use packages in Tcl is to invoke \fBpackage require\fR
 and \fBpackage provide\fR commands in scripts, and use the procedure
 \fBpkg_mkIndex\fR to create package index files.
-Once you've done this, packages will be loaded automatically
+Once you have done this, packages will be loaded automatically
 in response to \fBpackage require\fR commands.
 See the documentation for \fBpkg_mkIndex\fR for details.
 .SH EXAMPLES
@@ -205,9 +346,7 @@ if {[catch {\fBpackage require\fR Snack}]} {
    # We have the package, configure the app to use it
 }
 .CE
-
 .SH "SEE ALSO"
 msgcat(n), packagens(n), pkgMkIndex(n)
-
 .SH KEYWORDS
 package, version
diff --git a/doc/packagens.n b/doc/packagens.n
index a0386f2..1220b20 100644
--- a/doc/packagens.n
+++ b/doc/packagens.n
@@ -7,8 +7,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-pkg::create \- Construct an appropriate \fBpackage ifneeded\fR
-command for a given package specification
+pkg::create \- Construct an appropriate 'package ifneeded' command for a given package specification
 .SH SYNOPSIS
 \fB::pkg::create \fI\-name packageName\fR \fI\-version packageVersion\fR ?\fI\-load filespec\fR? ... ?\fI\-source filespec\fR? ...
 .BE
@@ -45,9 +44,7 @@ specifies a Tcl library that must be loaded with the
 specified.
 .PP
 At least one \fB\-load\fR or \fB\-source\fR parameter must be given.
-
 .SH "SEE ALSO"
 package(n)
-
 .SH KEYWORDS
 auto-load, index, package, version
diff --git a/doc/pid.n b/doc/pid.n
index 1001ddc..97a42a7 100644
--- a/doc/pid.n
+++ b/doc/pid.n
@@ -23,7 +23,7 @@ In this case the \fBpid\fR command will return a list whose elements
 are the process identifiers of all the processes in the pipeline,
 in order.
 The list will be empty if \fIfileId\fR refers to an open file
-that isn't a process pipeline.
+that is not a process pipeline.
 If no \fIfileId\fR argument is given then \fBpid\fR returns the process
 identifier of the current process.
 All process identifiers are returned as decimal strings.
diff --git a/doc/pkgMkIndex.n b/doc/pkgMkIndex.n
index d0ea771..5895407 100644
--- a/doc/pkgMkIndex.n
+++ b/doc/pkgMkIndex.n
@@ -12,12 +12,9 @@
 pkg_mkIndex \- Build an index for automatic loading of packages
 .SH SYNOPSIS
 .nf
-.VS 8.3.0
 \fBpkg_mkIndex ?\fI\-direct\fR?  ?\fI\-lazy\fR?  ?\fI\-load pkgPat\fR? ?\fI\-verbose\fR? \fIdir\fR ?\fIpattern pattern ...\fR?
-.VE
 .fi
 .BE
-
 .SH DESCRIPTION
 .PP
 \fBPkg_mkIndex\fR is a utility procedure that is part of the standard
@@ -39,10 +36,9 @@ Create the index by invoking \fBpkg_mkIndex\fR.
 The \fIdir\fR argument gives the name of a directory and each
 \fIpattern\fR argument is a \fBglob\fR-style pattern that selects
 script or binary files in \fIdir\fR.
-.VS 8.0.3
 The default pattern is \fB*.tcl\fR and \fB*.[info sharedlibextension]\fR.
-.VE
-.br
+.RS
+.PP
 \fBPkg_mkIndex\fR will create a file \fBpkgIndex.tcl\fR in \fIdir\fR
 with package information about all the files given by the \fIpattern\fR
 arguments.
@@ -53,10 +49,10 @@ and new commands appear (this is why it is essential to have
 in the files, as described above).
 If you have a package split among scripts and binary files, 
 or if you have dependencies among files,
-you may have to use the \fB\-load\fP option
+you may have to use the \fB\-load\fR option
 or adjust the order in which \fBpkg_mkIndex\fR processes
-the files.  See COMPLEX CASES below.
-
+the files.  See \fBCOMPLEX CASES\fR below.
+.RE
 .IP [3]
 Install the package as a subdirectory of one of the directories given by
 the \fBtcl_pkgPath\fR variable.  If \fB$tcl_pkgPath\fR contains more
@@ -70,7 +66,8 @@ the package's script and/or binary files as well as the \fBpkgIndex.tcl\fR
 file.  As long as the package is installed as a subdirectory of a
 directory in \fB$tcl_pkgPath\fR it will automatically be found during
 \fBpackage require\fR commands.
-.br
+.RS
+.PP
 If you install the package anywhere else, then you must ensure that
 the directory containing the package is in the \fBauto_path\fR global variable
 or an immediate subdirectory of one of the directories in \fBauto_path\fR.
@@ -83,6 +80,7 @@ You can add a directory to \fBauto_path\fR explicitly in your
 application, or you can add the directory to your \fBTCLLIBPATH\fR
 environment variable:  if this environment variable is present,
 Tcl initializes \fBauto_path\fR from it during application startup.
+.RE
 .IP [4]
 Once the above steps have been taken, all you need to do to use a
 package is to invoke \fBpackage require\fR.
@@ -96,7 +94,6 @@ in \fBauto_path\fR, but only one will actually be loaded in a given
 interpreter, based on the first call to \fBpackage require\fR.
 Different versions of a package may be loaded in different
 interpreters.
-
 .SH OPTIONS
 The optional switches are:
 .TP 15
@@ -107,22 +104,22 @@ upon \fBpackage require\fR.  This is the default.
 \fB\-lazy\fR
 The generated index will manage to delay loading the package until the
 use of one of the commands provided by the package, instead of loading
-it immediately upon \fBpackage require\fR.
+it immediately upon \fBpackage require\fR.  This is not compatible with
+the use of \fIauto_reset\fR, and therefore its use is discouraged.
 .TP 15
 \fB\-load \fIpkgPat\fR
 The index process will pre-load any packages that exist in the
-current interpreter and match \fIpkgPat\fP into the slave interpreter used to
+current interpreter and match \fIpkgPat\fR into the slave interpreter used to
 generate the index.  The pattern match uses string match rules, but without
 making case distinctions.
 See COMPLEX CASES below.
 .TP 15
 \fB\-verbose\fR
 Generate output during the indexing process.  Output is via
-the \fBtclLog\fP procedure, which by default prints to stderr.
+the \fBtclLog\fR procedure, which by default prints to stderr.
 .TP 15
 \fB\-\-\fR
-End of the flags, in case \fIdir\fP begins with a dash.
-
+End of the flags, in case \fIdir\fR begins with a dash.
 .SH "PACKAGES AND THE AUTO-LOADER"
 .PP
 The package management facilities overlap somewhat with the auto-loader,
@@ -142,7 +139,6 @@ If you use \fBpkg_mkIndex\fR to index a package, its commands cannot
 be invoked until \fBpackage require\fR has been used to select a
 version;  in contrast, packages indexed with \fBauto_mkindex\fR
 can be used immediately since there is no version control.
-
 .SH "HOW IT WORKS"
 .PP
 \fBPkg_mkIndex\fR depends on the \fBpackage unknown\fR command,
@@ -157,18 +153,14 @@ commands for each version of each available package;  these commands
 invoke \fBpackage provide\fR commands to announce the
 availability of the package, and they setup auto-loader
 information to load the files of the package.
-.VS 8.3
 If the \fI\-lazy\fR flag was provided when the \fBpkgIndex.tcl\fR
 was generated,
-.VE
-a given file of a given version of a given package isn't
+a given file of a given version of a given package is not
 actually loaded until the first time one of its commands
 is invoked.
 Thus, after invoking \fBpackage require\fR you may
 not see the package's commands in the interpreter, but you will be able
 to invoke the commands and they will be auto-loaded.
-
-.VS 8.3
 .SH "DIRECT LOADING"
 .PP
 Some packages, for instance packages which use namespaces and export
@@ -177,8 +169,6 @@ that their package files be loaded immediately upon \fBpackage require\fR
 instead of delaying the actual loading to the first use of one of the
 package's command. This is the default mode when generating the package
 index.  It can be overridden by specifying the \fI\-lazy\fR argument.
-.VE
-
 .SH "COMPLEX CASES"
 Most complex cases of dependencies among scripts
 and binary files, and packages being split among scripts and
@@ -193,28 +183,28 @@ with some glob patterns.
 .PP
 In general, it is OK for scripts to have dependencies on other
 packages.
-If scripts contain \fBpackage require\fP commands, these are
+If scripts contain \fBpackage require\fR commands, these are
 stubbed out in the interpreter used to process the scripts,
 so these do not cause problems.
 If scripts call into other packages in global code,
-these calls are handled by a stub \fBunknown\fP command.
+these calls are handled by a stub \fBunknown\fR command.
 However, if scripts make variable references to other package's
 variables in global code, these will cause errors.  That is
 also bad coding style.
 .PP
 If binary files have dependencies on other packages, things
 can become tricky because it is not possible to stub out
-C-level APIs such as \fBTcl_PkgRequire\fP API
+C-level APIs such as \fBTcl_PkgRequire\fR API
 when loading a binary file.
 For example, suppose the BLT package requires Tk, and expresses
-this with a call to \fBTcl_PkgRequire\fP in its \fBBlt_Init\fP routine.
+this with a call to \fBTcl_PkgRequire\fR in its \fBBlt_Init\fR routine.
 To support this, you must run \fBpkg_mkIndex\fR in an interpreter that
 has Tk loaded.  You can achieve this with the
 \fB\-load \fIpkgPat\fR option.  If you specify this option,
 \fBpkg_mkIndex\fR will load any packages listed by
-\fBinfo loaded\fP and that match \fIpkgPat\fP
+\fBinfo loaded\fR and that match \fIpkgPat\fR
 into the interpreter used to process files.
-In most cases this will satisfy the \fBTcl_PkgRequire\fP calls
+In most cases this will satisfy the \fBTcl_PkgRequire\fR calls
 made by binary files.
 .PP
 If you are indexing two binary files and one depends on the other,
@@ -224,19 +214,17 @@ and then the package it provides
 will be available when the second file is processed.
 You may also need to load the first package into the
 temporary interpreter used to create the index by using
-the \fB\-load\fP flag;
-it won't hurt to specify package patterns that are not yet loaded.
+the \fB\-load\fR flag;
+it will not hurt to specify package patterns that are not yet loaded.
 .PP
 If you have a package that is split across scripts and a binary file,
-then you should avoid the \fB\-load\fP flag. The problem is that
+then you should avoid the \fB\-load\fR flag. The problem is that
 if you load a package before computing the index it masks any
 other files that provide part of the same package.
-If you must use \fB\-load\fP,
+If you must use \fB\-load\fR,
 then you must specify the scripts first; otherwise the package loaded from
 the binary file may mask the package defined by the scripts.
-
 .SH "SEE ALSO"
 package(n)
-
 .SH KEYWORDS
 auto-load, index, package, version
diff --git a/doc/platform.n b/doc/platform.n
new file mode 100644
index 0000000..053448d
--- /dev/null
+++ b/doc/platform.n
@@ -0,0 +1,66 @@
+'\"
+'\" Copyright (c) 2006 ActiveState Software Inc
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH "platform" n 1.0.4 platform "Tcl Bundled Packages"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+platform \- System identification support code and utilities
+.SH SYNOPSIS
+.nf
+\fBpackage require platform ?1.0.4?\fR
+.sp
+\fBplatform::generic\fR
+\fBplatform::identify\fR
+\fBplatform::patterns \fIidentifier\fR
+.fi
+.BE
+.SH DESCRIPTION
+.PP
+The \fBplatform\fR package provides several utility commands useful
+for the identification of the architecture of a machine running Tcl.
+.PP
+Whilst Tcl provides the \fBtcl_platform\fR array for identifying the
+current architecture (in particular, the platform and machine
+elements) this is not always sufficient. This is because (on Unix
+machines) \fBtcl_platform\fR reflects the values returned by the
+\fBuname\fR command and these are not standardized across platforms and
+architectures. In addition, on at least one platform (AIX) the
+\fBtcl_platform(machine)\fR contains the CPU serial number.
+.PP
+Consequently, individual applications need to manipulate the values in
+\fBtcl_platform\fR (along with the output of system specific
+utilities) - which is both inconvenient for developers, and introduces
+the potential for inconsistencies in identifying architectures and in
+naming conventions.
+.PP
+The \fBplatform\fR package prevents such fragmentation - i.e., it
+establishes a standard naming convention for architectures running Tcl
+and makes it more convenient for developers to identify the current
+architecture a Tcl program is running on.
+.SH COMMANDS
+.TP
+\fBplatform::identify\fR
+This command returns an identifier describing the platform the Tcl
+core is running on. The returned identifier has the general format
+\fIOS\fR-\fICPU\fR. The \fIOS\fR part of the identifier may contain
+details like kernel version, libc version, etc., and this information
+may contain dashes as well.  The \fICPU\fR part will not contain
+dashes, making the preceding dash the last dash in the result.
+.TP
+\fBplatform::generic\fR
+This command returns a simplified identifier describing the platform
+the Tcl core is running on. In contrast to \fBplatform::identify\fR it
+leaves out details like kernel version, libc version, etc. The
+returned identifier has the general format \fIOS\fR-\fICPU\fR.
+.TP
+\fBplatform::patterns 	\fIidentifier\fR
+This command takes an identifier as returned by
+\fBplatform::identify\fR and returns a list of identifiers describing
+compatible architectures.
+.SH KEYWORDS
+operating system, cpu architecture, platform, architecture
diff --git a/doc/platform_shell.n b/doc/platform_shell.n
new file mode 100644
index 0000000..eef4d4e
--- /dev/null
+++ b/doc/platform_shell.n
@@ -0,0 +1,57 @@
+'\"
+'\" Copyright (c) 2006-2008 ActiveState Software Inc
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH "platform::shell" n 1.1.4 platform::shell "Tcl Bundled Packages"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+platform::shell \- System identification support code and utilities
+.SH SYNOPSIS
+.nf
+\fBpackage require platform::shell ?1.1.4?\fR
+.sp
+\fBplatform::shell::generic \fIshell\fR
+\fBplatform::shell::identify \fIshell\fR
+\fBplatform::shell::platform \fIshell\fR
+.fi
+.BE
+.SH DESCRIPTION
+.PP
+The \fBplatform::shell\fR package provides several utility commands useful
+for the identification of the architecture of a specific Tcl shell.
+.PP
+This package allows the identification of the architecture of a
+specific Tcl shell different from the shell running the package. The
+only requirement is that the other shell (identified by its path), is
+actually executable on the current machine.
+.PP
+While for most platform this means that the architecture of the
+interrogated shell is identical to the architecture of the running
+shell this is not generally true. A counter example are all platforms
+which have 32 and 64 bit variants and where a 64bit system is able to
+run 32bit code. For these running and interrogated shell may have
+different 32/64 bit settings and thus different identifiers.
+.PP
+For applications like a code repository it is important to identify
+the architecture of the shell which will actually run the installed
+packages, versus the architecture of the shell running the repository
+software.
+.SH COMMANDS
+.TP
+\fBplatform::shell::identify \fIshell\fR
+This command does the same identification as \fBplatform::identify\fR,
+for the specified Tcl shell, in contrast to the running shell.
+.TP
+\fBplatform::shell::generic \fIshell\fR
+This command does the same identification as \fBplatform::generic\fR,
+for the specified Tcl shell, in contrast to the running shell.
+.TP
+\fBplatform::shell::platform \fIshell\fR
+This command returns the contents of \fBtcl_platform(platform)\fR for
+the specified Tcl shell.
+.SH KEYWORDS
+operating system, cpu architecture, platform, architecture
diff --git a/doc/proc.n b/doc/proc.n
index c335b3e..4525207 100644
--- a/doc/proc.n
+++ b/doc/proc.n
@@ -33,17 +33,25 @@ elements specifies
 one argument.  Each argument specifier is also a list with either
 one or two fields.  If there is only a single field in the specifier
 then it is the name of the argument; if there are two fields, then
-the first is the argument name and the second is its default value.
+the first is the argument name and the second is its default value. 
+Arguments with default values that are followed by non-defaulted
+arguments become required arguments.  In 8.6 this will be considered an 
+error. 
 .PP
 When \fIname\fR is invoked a local variable
 will be created for each of the formal arguments to the procedure; its
 value will be the value of corresponding argument in the invoking command
 or the argument's default value.
+Actual arguments are assigned to formal arguments strictly in order.
 Arguments with default values need not be
 specified in a procedure invocation.  However, there must be enough
 actual arguments for all the
-formal arguments that don't have defaults, and there must not be any extra
-actual arguments.  There is one special case to permit procedures with
+formal arguments that do not have defaults, and there must not be any extra
+actual arguments.  
+Arguments with default values that are followed by non-defaulted
+arguments become required arguments (in 8.6 it will be considered an 
+error).
+There is one special case to permit procedures with
 variable numbers of arguments.  If the last formal argument has the name
 \fBargs\fR, then a call to the procedure may contain more actual arguments
 than the procedure has formals.  In this case, all of the actual arguments
@@ -55,14 +63,12 @@ When \fIbody\fR is being executed, variable names normally refer to
 local variables, which are created automatically when referenced and
 deleted when the procedure returns.  One local variable is automatically
 created for each of the procedure's arguments.
-Global variables can only be accessed by invoking
-the \fBglobal\fR command or the \fBupvar\fR command.
-Namespace variables can only be accessed by invoking
-the \fBvariable\fR command or the \fBupvar\fR command.
+Other variables can only be accessed by invoking one of the \fBglobal\fR, 
+\fBvariable\fR, \fBupvar\fR or \fBnamespace upvar\fR commands.
 .PP
 The \fBproc\fR command returns an empty string.  When a procedure is
 invoked, the procedure's return value is the value specified in a
-\fBreturn\fR command.  If the procedure doesn't execute an explicit
+\fBreturn\fR command.  If the procedure does not execute an explicit
 \fBreturn\fR, then its return value is the value of the last command
 executed in the procedure's body.
 If an error occurs while executing the procedure
diff --git a/doc/puts.n b/doc/puts.n
index 5c1c12c..5cd8721 100644
--- a/doc/puts.n
+++ b/doc/puts.n
@@ -20,13 +20,11 @@ puts \- Write to a channel
 Writes the characters given by \fIstring\fR to the channel given
 by \fIchannelId\fR.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as a
 Tcl standard channel (\fBstdout\fR or \fBstderr\fR), the return
 value from an invocation of \fBopen\fR or \fBsocket\fR, or the result
 of a channel creation command provided by a Tcl extension. The channel
 must have been opened for output.
-.VE
 .PP
 If no \fIchannelId\fR is specified then it defaults to
 \fBstdout\fR. \fBPuts\fR normally outputs a newline character after
@@ -37,7 +35,7 @@ Newline characters in the output are translated by \fBputs\fR to
 platform-specific end-of-line sequences according to the current
 value of the \fB\-translation\fR option for the channel (for example,
 on PCs newlines are normally replaced with carriage-return-linefeed
-sequences).
+sequences.
 See the \fBfconfigure\fR manual entry for a discussion on ways in
 which \fBfconfigure\fR will alter output.
 .PP
@@ -63,7 +61,7 @@ buffered for a channel in nonblocking mode, which could consume a
 large amount of memory.
 To avoid wasting memory, nonblocking I/O should normally
 be used in an event-driven fashion with the \fBfileevent\fR command
-(don't invoke \fBputs\fR unless you have recently been notified
+(do not invoke \fBputs\fR unless you have recently been notified
 via a file event that the channel is ready for more output data).
 .SH EXAMPLES
 Write a short message to the console (or wherever \fBstdout\fR is
diff --git a/doc/pwd.n b/doc/pwd.n
index 99a438f..e63b815 100644
--- a/doc/pwd.n
+++ b/doc/pwd.n
@@ -22,7 +22,7 @@ Returns the absolute path name of the current working directory.
 Sometimes it is useful to change to a known directory when running
 some external command using \fBexec\fR, but it is important to keep
 the application usually running in the directory that it was started
-in (unless the user specifies otherwise) since that minimises user
+in (unless the user specifies otherwise) since that minimizes user
 confusion. The way to do this is to save the current directory while
 the external command is being run:
 .CS
@@ -32,7 +32,6 @@ cd /tmp
 exec tar -xf $tarFile
 cd $savedDir
 .CE
-
 .SH "SEE ALSO"
 file(n), cd(n), glob(n), filename(n)
 
diff --git a/doc/re_syntax.n b/doc/re_syntax.n
index 8ec2deb..8701641 100644
--- a/doc/re_syntax.n
+++ b/doc/re_syntax.n
@@ -9,922 +9,820 @@
 .TH re_syntax n "8.1" Tcl "Tcl Built-In Commands"
 .BS
 .SH NAME
-re_syntax \- Syntax of Tcl regular expressions.
+re_syntax \- Syntax of Tcl regular expressions
 .BE
-
 .SH DESCRIPTION
 .PP
 A \fIregular expression\fR describes strings of characters.
-It's a pattern that matches certain strings and doesn't match others.
-
+It's a pattern that matches certain strings and does not match others.
 .SH "DIFFERENT FLAVORS OF REs"
-Regular expressions (``RE''s), as defined by POSIX, come in two
-flavors: \fIextended\fR REs (``EREs'') and \fIbasic\fR REs (``BREs'').
+Regular expressions
+.PQ RE s ,
+as defined by POSIX, come in two flavors: \fIextended\fR REs
+.PQ ERE s
+and \fIbasic\fR REs
+.PQ BRE s .
 EREs are roughly those of the traditional \fIegrep\fR, while BREs are
-roughly those of the traditional \fIed\fR.  This implementation adds
-a third flavor, \fIadvanced\fR REs (``AREs''), basically EREs with
-some significant extensions.
+roughly those of the traditional \fIed\fR. This implementation adds
+a third flavor, \fIadvanced\fR REs
+.PQ ARE s ,
+basically EREs with some significant extensions.
 .PP
-This manual page primarily describes AREs.  BREs mostly exist for
+This manual page primarily describes AREs. BREs mostly exist for
 backward compatibility in some old programs; they will be discussed at
-the end.  POSIX EREs are almost an exact subset of AREs.  Features of
+the end. POSIX EREs are almost an exact subset of AREs. Features of
 AREs that are not present in EREs will be indicated.
-
 .SH "REGULAR EXPRESSION SYNTAX"
 .PP
 Tcl regular expressions are implemented using the package written by
 Henry Spencer, based on the 1003.2 spec and some (not quite all) of
-the Perl5 extensions (thanks, Henry!).  Much of the description of
+the Perl5 extensions (thanks, Henry!). Much of the description of
 regular expressions below is copied verbatim from his manual entry.
 .PP
 An ARE is one or more \fIbranches\fR,
-separated by `\fB|\fR',
+separated by
+.QW \fB|\fR ,
 matching anything that matches any of the branches.
 .PP
 A branch is zero or more \fIconstraints\fR or \fIquantified atoms\fR,
 concatenated.
 It matches a match for the first, followed by a match for the second, etc;
 an empty branch matches the empty string.
-.PP
+.SS QUANTIFIERS
 A quantified atom is an \fIatom\fR possibly followed
 by a single \fIquantifier\fR.
-Without a quantifier, it matches a match for the atom.
+Without a quantifier, it matches a single match for the atom.
 The quantifiers,
 and what a so-quantified atom matches, are:
 .RS 2
 .TP 6
 \fB*\fR
+.
 a sequence of 0 or more matches of the atom
 .TP
 \fB+\fR
+.
 a sequence of 1 or more matches of the atom
 .TP
 \fB?\fR
+.
 a sequence of 0 or 1 matches of the atom
 .TP
 \fB{\fIm\fB}\fR
+.
 a sequence of exactly \fIm\fR matches of the atom
 .TP
 \fB{\fIm\fB,}\fR
+.
 a sequence of \fIm\fR or more matches of the atom
 .TP
 \fB{\fIm\fB,\fIn\fB}\fR
+.
 a sequence of \fIm\fR through \fIn\fR (inclusive) matches of the atom;
 \fIm\fR may not exceed \fIn\fR
 .TP
 \fB*?  +?  ??  {\fIm\fB}?  {\fIm\fB,}?  {\fIm\fB,\fIn\fB}?\fR
-\fInon-greedy\fR quantifiers,
-which match the same possibilities,
+.
+\fInon-greedy\fR quantifiers, which match the same possibilities,
 but prefer the smallest number rather than the largest number
-of matches (see MATCHING)
+of matches (see \fBMATCHING\fR)
 .RE
 .PP
-The forms using
-\fB{\fR and \fB}\fR
-are known as \fIbound\fRs.
-The numbers
-\fIm\fR and \fIn\fR are unsigned decimal integers
-with permissible values from 0 to 255 inclusive.
-.PP
+The forms using \fB{\fR and \fB}\fR are known as \fIbound\fRs. The
+numbers \fIm\fR and \fIn\fR are unsigned decimal integers with
+permissible values from 0 to 255 inclusive.
+.SS ATOMS
 An atom is one of:
 .RS 2
-.TP 6
-\fB(\fIre\fB)\fR
-(where \fIre\fR is any regular expression)
-matches a match for
-\fIre\fR, with the match noted for possible reporting
-.TP
-\fB(?:\fIre\fB)\fR
-as previous,
-but does no reporting
-(a ``non-capturing'' set of parentheses)
-.TP
-\fB()\fR
-matches an empty string,
-noted for possible reporting
-.TP
-\fB(?:)\fR
-matches an empty string,
-without reporting
-.TP
-\fB[\fIchars\fB]\fR
-a \fIbracket expression\fR,
-matching any one of the \fIchars\fR (see BRACKET EXPRESSIONS for more detail)
-.TP
- \fB.\fR
+.IP \fB(\fIre\fB)\fR 6
+matches a match for \fIre\fR (\fIre\fR is any regular expression) with
+the match noted for possible reporting
+.IP \fB(?:\fIre\fB)\fR
+as previous, but does no reporting (a
+.QW non-capturing
+set of parentheses)
+.IP \fB()\fR
+matches an empty string, noted for possible reporting
+.IP \fB(?:)\fR
+matches an empty string, without reporting
+.IP \fB[\fIchars\fB]\fR
+a \fIbracket expression\fR, matching any one of the \fIchars\fR (see
+\fBBRACKET EXPRESSIONS\fR for more detail)
+.IP \fB.\fR
 matches any single character
-.TP
-\fB\e\fIk\fR
-(where \fIk\fR is a non-alphanumeric character)
-matches that character taken as an ordinary character,
-e.g. \e\e matches a backslash character
-.TP
-\fB\e\fIc\fR
-where \fIc\fR is alphanumeric
-(possibly followed by other characters),
-an \fIescape\fR (AREs only),
-see ESCAPES below
-.TP
-\fB{\fR
-when followed by a character other than a digit,
-matches the left-brace character `\fB{\fR';
-when followed by a digit, it is the beginning of a
-\fIbound\fR (see above)
-.TP
-\fIx\fR
-where \fIx\fR is
-a single character with no other significance, matches that character.
+.IP \fB\e\fIk\fR
+matches the non-alphanumeric character \fIk\fR
+taken as an ordinary character, e.g. \fB\e\e\fR matches a backslash
+character
+.IP \fB\e\fIc\fR
+where \fIc\fR is alphanumeric (possibly followed by other characters),
+an \fIescape\fR (AREs only), see \fBESCAPES\fR below
+.IP \fB{\fR
+when followed by a character other than a digit, matches the
+left-brace character
+.QW \fB{\fR ;
+when followed by a digit, it is the beginning of a \fIbound\fR (see above)
+.IP \fIx\fR
+where \fIx\fR is a single character with no other significance,
+matches that character.
 .RE
-.PP
+.SS CONSTRAINTS
 A \fIconstraint\fR matches an empty string when specific conditions
-are met.
-A constraint may not be followed by a quantifier.
-The simple constraints are as follows; some more constraints are
-described later, under ESCAPES.
+are met. A constraint may not be followed by a quantifier. The
+simple constraints are as follows; some more constraints are described
+later, under \fBESCAPES\fR.
 .RS 2
 .TP 8
 \fB^\fR
+.
 matches at the beginning of a line
 .TP
 \fB$\fR
+.
 matches at the end of a line
 .TP
 \fB(?=\fIre\fB)\fR
-\fIpositive lookahead\fR (AREs only), matches at any point
-where a substring matching \fIre\fR begins
+.
+\fIpositive lookahead\fR (AREs only), matches at any point where a
+substring matching \fIre\fR begins
 .TP
 \fB(?!\fIre\fB)\fR
-\fInegative lookahead\fR (AREs only), matches at any point
-where no substring matching \fIre\fR begins
+.
+\fInegative lookahead\fR (AREs only), matches at any point where no
+substring matching \fIre\fR begins
 .RE
 .PP
 The lookahead constraints may not contain back references (see later),
 and all parentheses within them are considered non-capturing.
 .PP
-An RE may not end with `\fB\e\fR'.
-
+An RE may not end with
+.QW \fB\e\fR .
 .SH "BRACKET EXPRESSIONS"
-A \fIbracket expression\fR is a list of characters enclosed in `\fB[\|]\fR'.
-It normally matches any single character from the list (but see below).
-If the list begins with `\fB^\fR',
-it matches any single character
-(but see below) \fInot\fR from the rest of the list.
-.PP
-If two characters in the list are separated by `\fB\-\fR',
-this is shorthand
-for the full \fIrange\fR of characters between those two (inclusive) in the
-collating sequence,
-e.g.
-\fB[0\-9]\fR
-in ASCII matches any decimal digit.
-Two ranges may not share an
+A \fIbracket expression\fR is a list of characters enclosed in
+.QW \fB[\|]\fR .
+It normally matches any single character from the list
+(but see below). If the list begins with
+.QW \fB^\fR ,
+it matches any single character (but see below) \fInot\fR from the
+rest of the list.
+.PP
+If two characters in the list are separated by
+.QW \fB\-\fR ,
+this is shorthand for the full \fIrange\fR of characters between those two
+(inclusive) in the collating sequence, e.g.
+.QW \fB[0\-9]\fR
+in Unicode matches any conventional decimal digit. Two ranges may not share an
 endpoint, so e.g.
-\fBa\-c\-e\fR
-is illegal.
-Ranges are very collating-sequence-dependent,
-and portable programs should avoid relying on them.
-.PP
-To include a literal
-\fB]\fR
-or
-\fB\-\fR
-in the list,
-the simplest method is to
-enclose it in
-\fB[.\fR and \fB.]\fR
-to make it a collating element (see below).
-Alternatively,
-make it the first character
-(following a possible `\fB^\fR'),
-or (AREs only) precede it with `\fB\e\fR'.
-Alternatively, for `\fB\-\fR',
-make it the last character,
-or the second endpoint of a range.
-To use a literal
-\fB\-\fR
-as the first endpoint of a range,
-make it a collating element
-or (AREs only) precede it with `\fB\e\fR'.
-With the exception of these, some combinations using
-\fB[\fR
-(see next
-paragraphs), and escapes,
-all other special characters lose their
-special significance within a bracket expression.
-.PP
-Within a bracket expression, a collating element (a character,
-a multi-character sequence that collates as if it were a single character,
-or a collating-sequence name for either)
-enclosed in
-\fB[.\fR and \fB.]\fR
-stands for the
-sequence of characters of that collating element.
-The sequence is a single element of the bracket expression's list.
-A bracket expression in a locale that has
-multi-character collating elements
-can thus match more than one character.
-.VS 8.2
-So (insidiously), a bracket expression that starts with \fB^\fR
-can match multi-character collating elements even if none of them
-appear in the bracket expression!
-(\fINote:\fR Tcl currently has no multi-character collating elements.
-This information is only for illustration.)
-.PP
-For example, assume the collating sequence includes a \fBch\fR
-multi-character collating element.
-Then the RE \fB[[.ch.]]*c\fR (zero or more \fBch\fP's followed by \fBc\fP)
-matches the first five characters of `\fBchchcc\fR'.
-Also, the RE \fB[^c]b\fR matches all of `\fBchb\fR'
-(because \fB[^c]\fR matches the multi-character \fBch\fR).
-.VE 8.2
-.PP
-Within a bracket expression, a collating element enclosed in
-\fB[=\fR
-and
-\fB=]\fR
-is an equivalence class, standing for the sequences of characters
-of all collating elements equivalent to that one, including itself.
-(If there are no other equivalent collating elements,
-the treatment is as if the enclosing delimiters were `\fB[.\fR'\&
-and `\fB.]\fR'.)
-For example, if
-\fBo\fR
-and
-\fB\o'o^'\fR
-are the members of an equivalence class,
-then `\fB[[=o=]]\fR', `\fB[[=\o'o^'=]]\fR',
-and `\fB[o\o'o^']\fR'\&
-are all synonymous.
-An equivalence class may not be an endpoint
-of a range.
-.VS 8.2
-(\fINote:\fR 
-Tcl currently implements only the Unicode locale.
-It doesn't define any equivalence classes.
-The examples above are just illustrations.)
-.VE 8.2
-.PP
-Within a bracket expression, the name of a \fIcharacter class\fR enclosed
-in
-\fB[:\fR
-and
-\fB:]\fR
-stands for the list of all characters
-(not all collating elements!)
-belonging to that
-class.
+.QW \fBa\-c\-e\fR
+is illegal. Ranges in Tcl always use the
+Unicode collating sequence, but other programs may use other collating
+sequences and this can be a source of incompatability between programs.
+.PP
+To include a literal \fB]\fR or \fB\-\fR in the list, the simplest
+method is to enclose it in \fB[.\fR and \fB.]\fR to make it a
+collating element (see below). Alternatively, make it the first
+character (following a possible
+.QW \fB^\fR ),
+or (AREs only) precede it with
+.QW \fB\e\fR .
+Alternatively, for
+.QW \fB\-\fR ,
+make it the last character, or the second endpoint of a range. To use
+a literal \fB\-\fR as the first endpoint of a range, make it a
+collating element or (AREs only) precede it with
+.QW \fB\e\fR .
+With the exception of
+these, some combinations using \fB[\fR (see next paragraphs), and
+escapes, all other special characters lose their special significance
+within a bracket expression.
+.SS "CHARACTER CLASSES"
+Within a bracket expression, the name of a \fIcharacter class\fR
+enclosed in \fB[:\fR and \fB:]\fR stands for the list of all
+characters (not all collating elements!) belonging to that class.
 Standard character classes are:
-.PP
+.IP \fBalpha\fR 8
+A letter.
+.IP \fBupper\fR 8
+An upper-case letter.
+.IP \fBlower\fR 8
+A lower-case letter.
+.IP \fBdigit\fR 8
+A decimal digit.
+.IP \fBxdigit\fR 8
+A hexadecimal digit.
+.IP \fBalnum\fR 8
+An alphanumeric (letter or digit).
+.IP \fBprint\fR 8
+A "printable" (same as graph, except also including space).
+.IP \fBblank\fR 8
+A space or tab character.
+.IP \fBspace\fR 8
+A character producing white space in displayed text.
+.IP \fBpunct\fR 8
+A punctuation character.
+.IP \fBgraph\fR 8
+A character with a visible representation (includes both alnum and punct).
+.IP \fBcntrl\fR 8
+A control character.
+.PP
+A locale may provide others. A character class may not be used as an endpoint
+of a range.
 .RS
-.ne 5
-.ta 3c
-.nf
-\fBalpha\fR	A letter. 
-\fBupper\fR	An upper-case letter. 
-\fBlower\fR	A lower-case letter. 
-\fBdigit\fR	A decimal digit. 
-\fBxdigit\fR	A hexadecimal digit. 
-\fBalnum\fR	An alphanumeric (letter or digit). 
-\fBprint\fR	A "printable" (same as graph, except also including space).
-\fBblank\fR	A space or tab character.
-\fBspace\fR	A character producing white space in displayed text. 
-\fBpunct\fR	A punctuation character. 
-\fBgraph\fR	A character with a visible representation. 
-\fBcntrl\fR	A control character. 
-.fi
+.PP
+(\fINote:\fR the current Tcl implementation has only one locale, the Unicode
+locale, which supports exactly the above classes.)
 .RE
+.SS "BRACKETED CONSTRAINTS"
+There are two special cases of bracket expressions: the bracket
+expressions
+.QW \fB[[:<:]]\fR
+and
+.QW \fB[[:>:]]\fR
+are constraints, matching empty strings at the beginning and end of a word
+respectively.
+.\" note, discussion of escapes below references this definition of word
+A word is defined as a sequence of word characters that is neither preceded
+nor followed by word characters. A word character is an \fIalnum\fR character
+or an underscore
+.PQ \fB_\fR "" .
+These special bracket expressions are deprecated; users of AREs should use
+constraint escapes instead (see below).
+.SS "COLLATING ELEMENTS"
+Within a bracket expression, a collating element (a character, a
+multi-character sequence that collates as if it were a single
+character, or a collating-sequence name for either) enclosed in
+\fB[.\fR and \fB.]\fR stands for the sequence of characters of that
+collating element. The sequence is a single element of the bracket
+expression's list. A bracket expression in a locale that has
+multi-character collating elements can thus match more than one
+character. So (insidiously), a bracket expression that starts with
+\fB^\fR can match multi-character collating elements even if none of
+them appear in the bracket expression!
+.RS
 .PP
-A locale may provide others.
-.VS 8.2
-(Note that the current Tcl implementation has only one locale:
-the Unicode locale.)
-.VE 8.2
-A character class may not be used as an endpoint of a range.
+(\fINote:\fR Tcl has no multi-character collating elements. This information
+is only for illustration.)
+.RE
 .PP
-There are two special cases of bracket expressions:
-the bracket expressions
-\fB[[:<:]]\fR
+For example, assume the collating sequence includes a \fBch\fR multi-character
+collating element. Then the RE
+.QW \fB[[.ch.]]*c\fR
+(zero or more
+.QW \fBch\fRs
+followed by
+.QW \fBc\fR )
+matches the first five characters of
+.QW \fBchchcc\fR .
+Also, the RE
+.QW \fB[^c]b\fR
+matches all of
+.QW \fBchb\fR
+(because
+.QW \fB[^c]\fR
+matches the multi-character
+.QW \fBch\fR ).
+.SS "EQUIVALENCE CLASSES"
+Within a bracket expression, a collating element enclosed in \fB[=\fR
+and \fB=]\fR is an equivalence class, standing for the sequences of
+characters of all collating elements equivalent to that one, including
+itself. (If there are no other equivalent collating elements, the
+treatment is as if the enclosing delimiters were
+.QW \fB[.\fR \&
 and
-\fB[[:>:]]\fR
-are constraints, matching empty strings at
-the beginning and end of a word respectively.
-'\" note, discussion of escapes below references this definition of word
-A word is defined as a sequence of
-word characters
-that is neither preceded nor followed by
-word characters.
-A word character is an
-\fIalnum\fR
-character
-or an underscore
-(\fB_\fR).
-These special bracket expressions are deprecated;
-users of AREs should use constraint escapes instead (see below).
-.SH ESCAPES
-Escapes (AREs only), which begin with a
-\fB\e\fR
-followed by an alphanumeric character,
-come in several varieties:
-character entry, class shorthands, constraint escapes, and back references.
-A
-\fB\e\fR
-followed by an alphanumeric character but not constituting
-a valid escape is illegal in AREs.
-In EREs, there are no escapes:
-outside a bracket expression,
-a
-\fB\e\fR
-followed by an alphanumeric character merely stands for that
-character as an ordinary character,
-and inside a bracket expression,
-\fB\e\fR
-is an ordinary character.
-(The latter is the one actual incompatibility between EREs and AREs.)
+.QW \fB.]\fR .)
+For example, if \fBo\fR and \fB\N'244'\fR are the members of an
+equivalence class, then
+.QW \fB[[=o=]]\fR ,
+.QW \fB[[=\N'244'=]]\fR ,
+and
+.QW \fB[o\N'244']\fR \&
+are all synonymous. An equivalence class may not be an endpoint of a range.
+.RS
 .PP
+(\fINote:\fR Tcl implements only the Unicode locale. It does not define any
+equivalence classes. The examples above are just illustrations.)
+.RE
+.SH ESCAPES
+Escapes (AREs only), which begin with a \fB\e\fR followed by an
+alphanumeric character, come in several varieties: character entry,
+class shorthands, constraint escapes, and back references. A \fB\e\fR
+followed by an alphanumeric character but not constituting a valid
+escape is illegal in AREs. In EREs, there are no escapes: outside a
+bracket expression, a \fB\e\fR followed by an alphanumeric character
+merely stands for that character as an ordinary character, and inside
+a bracket expression, \fB\e\fR is an ordinary character. (The latter
+is the one actual incompatibility between EREs and AREs.)
+.SS "CHARACTER-ENTRY ESCAPES"
 Character-entry escapes (AREs only) exist to make it easier to specify
 non-printing and otherwise inconvenient characters in REs:
 .RS 2
 .TP 5
 \fB\ea\fR
+.
 alert (bell) character, as in C
 .TP
 \fB\eb\fR
+.
 backspace, as in C
 .TP
 \fB\eB\fR
-synonym for
-\fB\e\fR
-to help reduce backslash doubling in some
+.
+synonym for \fB\e\fR to help reduce backslash doubling in some
 applications where there are multiple levels of backslash processing
 .TP
 \fB\ec\fIX\fR
-(where X is any character) the character whose
-low-order 5 bits are the same as those of
-\fIX\fR,
-and whose other bits are all zero
+.
+(where \fIX\fR is any character) the character whose low-order 5 bits
+are the same as those of \fIX\fR, and whose other bits are all zero
 .TP
 \fB\ee\fR
-the character whose collating-sequence name
-is `\fBESC\fR',
+.
+the character whose collating-sequence name is
+.QW \fBESC\fR ,
 or failing that, the character with octal value 033
 .TP
 \fB\ef\fR
+.
 formfeed, as in C
 .TP
 \fB\en\fR
+.
 newline, as in C
 .TP
 \fB\er\fR
+.
 carriage return, as in C
 .TP
 \fB\et\fR
+.
 horizontal tab, as in C
 .TP
 \fB\eu\fIwxyz\fR
-(where
-\fIwxyz\fR
-is exactly four hexadecimal digits)
-the Unicode character
-\fBU+\fIwxyz\fR
-in the local byte ordering
+.
+(where \fIwxyz\fR is exactly four hexadecimal digits) the Unicode
+character \fBU+\fIwxyz\fR in the local byte ordering
 .TP
 \fB\eU\fIstuvwxyz\fR
-(where
-\fIstuvwxyz\fR
-is exactly eight hexadecimal digits)
-reserved for a somewhat-hypothetical Unicode extension to 32 bits
+.
+(where \fIstuvwxyz\fR is exactly eight hexadecimal digits) reserved
+for a somewhat-hypothetical Unicode extension to 32 bits
 .TP
 \fB\ev\fR
-vertical tab, as in C
-are all available.
+.
+vertical tab, as in C are all available.
 .TP
 \fB\ex\fIhhh\fR
-(where
-\fIhhh\fR
-is any sequence of hexadecimal digits)
-the character whose hexadecimal value is
-\fB0x\fIhhh\fR
-(a single character no matter how many hexadecimal digits are used).
+.
+(where \fIhhh\fR is any sequence of hexadecimal digits) the character
+whose hexadecimal value is \fB0x\fIhhh\fR (a single character no
+matter how many hexadecimal digits are used).
 .TP
 \fB\e0\fR
-the character whose value is
-\fB0\fR
+.
+the character whose value is \fB0\fR
 .TP
 \fB\e\fIxy\fR
-(where
-\fIxy\fR
-is exactly two octal digits,
-and is not a
-\fIback reference\fR (see below))
-the character whose octal value is
+.
+(where \fIxy\fR is exactly two octal digits, and is not a \fIback
+reference\fR (see below)) the character whose octal value is
 \fB0\fIxy\fR
 .TP
 \fB\e\fIxyz\fR
-(where
-\fIxyz\fR
-is exactly three octal digits,
-and is not a
-back reference (see below))
-the character whose octal value is
+.
+(where \fIxyz\fR is exactly three octal digits, and is not a back
+reference (see below)) the character whose octal value is
 \fB0\fIxyz\fR
 .RE
 .PP
-Hexadecimal digits are `\fB0\fR'-`\fB9\fR', `\fBa\fR'-`\fBf\fR',
-and `\fBA\fR'-`\fBF\fR'.
-Octal digits are `\fB0\fR'-`\fB7\fR'.
+Hexadecimal digits are
+.QR \fB0\fR \fB9\fR ,
+.QR \fBa\fR \fBf\fR ,
+and
+.QR \fBA\fR \fBF\fR .
+Octal digits are
+.QR \fB0\fR \fB7\fR .
 .PP
 The character-entry escapes are always taken as ordinary characters.
-For example,
-\fB\e135\fR
-is
-\fB]\fR
-in ASCII,
-but
-\fB\e135\fR
-does not terminate a bracket expression.
-Beware, however, that some applications (e.g., C compilers) interpret 
-such sequences themselves before the regular-expression package
-gets to see them, which may require doubling (quadrupling, etc.) the `\fB\e\fR'.
-.PP
-Class-shorthand escapes (AREs only) provide shorthands for certain commonly-used
-character classes:
+For example, \fB\e135\fR is \fB]\fR in Unicode, but \fB\e135\fR does
+not terminate a bracket expression. Beware, however, that some
+applications (e.g., C compilers and the Tcl interpreter if the regular
+expression is not quoted with braces) interpret such sequences
+themselves before the regular-expression package gets to see them,
+which may require doubling (quadrupling, etc.) the
+.QW \fB\e\fR .
+.SS "CLASS-SHORTHAND ESCAPES"
+Class-shorthand escapes (AREs only) provide shorthands for certain
+commonly-used character classes:
 .RS 2
 .TP 10
 \fB\ed\fR
+.
 \fB[[:digit:]]\fR
 .TP
 \fB\es\fR
+.
 \fB[[:space:]]\fR
 .TP
 \fB\ew\fR
-\fB[[:alnum:]_]\fR
-(note underscore)
+.
+\fB[[:alnum:]_]\fR (note underscore)
 .TP
 \fB\eD\fR
+.
 \fB[^[:digit:]]\fR
 .TP
 \fB\eS\fR
+.
 \fB[^[:space:]]\fR
 .TP
 \fB\eW\fR
-\fB[^[:alnum:]_]\fR
-(note underscore)
+.
+\fB[^[:alnum:]_]\fR (note underscore)
 .RE
 .PP
-Within bracket expressions, `\fB\ed\fR', `\fB\es\fR',
-and `\fB\ew\fR'\&
-lose their outer brackets,
-and `\fB\eD\fR', `\fB\eS\fR',
-and `\fB\eW\fR'\&
-are illegal.
-.VS 8.2
-(So, for example, \fB[a-c\ed]\fR is equivalent to \fB[a-c[:digit:]]\fR.
-Also, \fB[a-c\eD]\fR, which is equivalent to \fB[a-c^[:digit:]]\fR, is illegal.)
-.VE 8.2
-.PP
-A constraint escape (AREs only) is a constraint,
-matching the empty string if specific conditions are met,
-written as an escape:
+Within bracket expressions,
+.QW \fB\ed\fR ,
+.QW \fB\es\fR ,
+and
+.QW \fB\ew\fR \&
+lose their outer brackets, and
+.QW \fB\eD\fR ,
+.QW \fB\eS\fR ,
+and
+.QW \fB\eW\fR \&
+are illegal. (So, for example,
+.QW \fB[a-c\ed]\fR
+is equivalent to
+.QW \fB[a-c[:digit:]]\fR .
+Also,
+.QW \fB[a-c\eD]\fR ,
+which is equivalent to
+.QW \fB[a-c^[:digit:]]\fR ,
+is illegal.)
+.SS "CONSTRAINT ESCAPES"
+A constraint escape (AREs only) is a constraint, matching the empty
+string if specific conditions are met, written as an escape:
 .RS 2
 .TP 6
 \fB\eA\fR
-matches only at the beginning of the string
-(see MATCHING, below, for how this differs from `\fB^\fR')
+.
+matches only at the beginning of the string (see \fBMATCHING\fR,
+below, for how this differs from
+.QW \fB^\fR )
 .TP
 \fB\em\fR
+.
 matches only at the beginning of a word
 .TP
 \fB\eM\fR
+.
 matches only at the end of a word
 .TP
 \fB\ey\fR
+.
 matches only at the beginning or end of a word
 .TP
 \fB\eY\fR
+.
 matches only at a point that is not the beginning or end of a word
 .TP
 \fB\eZ\fR
-matches only at the end of the string
-(see MATCHING, below, for how this differs from `\fB$\fR')
+.
+matches only at the end of the string (see \fBMATCHING\fR, below, for
+how this differs from
+.QW \fB$\fR )
 .TP
 \fB\e\fIm\fR
-(where
-\fIm\fR
-is a nonzero digit) a \fIback reference\fR, see below
+.
+(where \fIm\fR is a nonzero digit) a \fIback reference\fR, see below
 .TP
 \fB\e\fImnn\fR
-(where
-\fIm\fR
-is a nonzero digit, and
-\fInn\fR
-is some more digits,
-and the decimal value
-\fImnn\fR
-is not greater than the number of closing capturing parentheses seen so far)
-a \fIback reference\fR, see below
+.
+(where \fIm\fR is a nonzero digit, and \fInn\fR is some more digits,
+and the decimal value \fImnn\fR is not greater than the number of
+closing capturing parentheses seen so far) a \fIback reference\fR, see
+below
 .RE
 .PP
 A word is defined as in the specification of
-\fB[[:<:]]\fR
+.QW \fB[[:<:]]\fR
 and
-\fB[[:>:]]\fR
-above.
-Constraint escapes are illegal within bracket expressions.
-.PP
-A back reference (AREs only) matches the same string matched by the parenthesized
-subexpression specified by the number,
-so that (e.g.)
-\fB([bc])\e1\fR
+.QW \fB[[:>:]]\fR
+above. Constraint escapes are illegal within bracket expressions.
+.SS "BACK REFERENCES"
+A back reference (AREs only) matches the same string matched by the
+parenthesized subexpression specified by the number, so that (e.g.)
+.QW \fB([bc])\e1\fR
 matches
-\fBbb\fR
+.QW \fBbb\fR
 or
-\fBcc\fR
-but not `\fBbc\fR'.
+.QW \fBcc\fR
+but not
+.QW \fBbc\fR .
 The subexpression must entirely precede the back reference in the RE.
 Subexpressions are numbered in the order of their leading parentheses.
 Non-capturing parentheses do not define subexpressions.
 .PP
-There is an inherent historical ambiguity between octal character-entry 
-escapes and back references, which is resolved by heuristics,
-as hinted at above.
-A leading zero always indicates an octal escape.
-A single non-zero digit, not followed by another digit,
-is always taken as a back reference.
-A multi-digit sequence not starting with a zero is taken as a back 
-reference if it comes after a suitable subexpression
-(i.e. the number is in the legal range for a back reference),
-and otherwise is taken as octal.
+There is an inherent historical ambiguity between octal
+character-entry escapes and back references, which is resolved by
+heuristics, as hinted at above. A leading zero always indicates an
+octal escape. A single non-zero digit, not followed by another digit,
+is always taken as a back reference. A multi-digit sequence not
+starting with a zero is taken as a back reference if it comes after a
+suitable subexpression (i.e. the number is in the legal range for a
+back reference), and otherwise is taken as octal.
 .SH "METASYNTAX"
 In addition to the main syntax described above, there are some special
 forms and miscellaneous syntactic facilities available.
 .PP
 Normally the flavor of RE being used is specified by
-application-dependent means.
-However, this can be overridden by a \fIdirector\fR.
-If an RE of any flavor begins with `\fB***:\fR',
-the rest of the RE is an ARE.
-If an RE of any flavor begins with `\fB***=\fR',
-the rest of the RE is taken to be a literal string,
-with all characters considered ordinary characters.
-.PP
-An ARE may begin with \fIembedded options\fR:
-a sequence
-\fB(?\fIxyz\fB)\fR
-(where
-\fIxyz\fR
-is one or more alphabetic characters)
-specifies options affecting the rest of the RE.
-These supplement, and can override,
-any options specified by the application.
-The available option letters are:
+application-dependent means. However, this can be overridden by a
+\fIdirector\fR. If an RE of any flavor begins with
+.QW \fB***:\fR ,
+the rest of the RE is an ARE. If an RE of any flavor begins with
+.QW \fB***=\fR ,
+the rest of the RE is taken to be a literal string, with
+all characters considered ordinary characters.
+.PP
+An ARE may begin with \fIembedded options\fR: a sequence
+\fB(?\fIxyz\fB)\fR (where \fIxyz\fR is one or more alphabetic
+characters) specifies options affecting the rest of the RE. These
+supplement, and can override, any options specified by the
+application. The available option letters are:
 .RS 2
 .TP 3
 \fBb\fR
+.
 rest of RE is a BRE
 .TP 3
 \fBc\fR
+.
 case-sensitive matching (usual default)
 .TP 3
 \fBe\fR
+.
 rest of RE is an ERE
 .TP 3
 \fBi\fR
-case-insensitive matching (see MATCHING, below)
+.
+case-insensitive matching (see \fBMATCHING\fR, below)
 .TP 3
 \fBm\fR
-historical synonym for
-\fBn\fR
+.
+historical synonym for \fBn\fR
 .TP 3
 \fBn\fR
-newline-sensitive matching (see MATCHING, below)
+.
+newline-sensitive matching (see \fBMATCHING\fR, below)
 .TP 3
 \fBp\fR
-partial newline-sensitive matching (see MATCHING, below)
+.
+partial newline-sensitive matching (see \fBMATCHING\fR, below)
 .TP 3
 \fBq\fR
-rest of RE is a literal (``quoted'') string, all ordinary characters
+.
+rest of RE is a literal
+.PQ quoted
+string, all ordinary characters
 .TP 3
 \fBs\fR
+.
 non-newline-sensitive matching (usual default)
 .TP 3
 \fBt\fR
+.
 tight syntax (usual default; see below)
 .TP 3
 \fBw\fR
-inverse partial newline-sensitive (``weird'') matching (see MATCHING, below)
+.
+inverse partial newline-sensitive
+.PQ weird
+matching (see \fBMATCHING\fR, below)
 .TP 3
 \fBx\fR
+.
 expanded syntax (see below)
 .RE
 .PP
-Embedded options take effect at the
-\fB)\fR
-terminating the sequence.
-They are available only at the start of an ARE,
-and may not be used later within it.
-.PP
-In addition to the usual (\fItight\fR) RE syntax, in which all characters are
-significant, there is an \fIexpanded\fR syntax,
-available in all flavors of RE
-with the \fB-expanded\fR switch, or in AREs with the embedded x option.
-In the expanded syntax,
-white-space characters are ignored
-and all characters between a
-\fB#\fR
-and the following newline (or the end of the RE) are ignored,
-permitting paragraphing and commenting a complex RE.
-There are three exceptions to that basic rule:
-.RS 2
-.PP
-a white-space character or `\fB#\fR' preceded by `\fB\e\fR' is retained
-.PP
-white space or `\fB#\fR' within a bracket expression is retained
-.PP
+Embedded options take effect at the \fB)\fR terminating the sequence.
+They are available only at the start of an ARE, and may not be used
+later within it.
+.PP
+In addition to the usual (\fItight\fR) RE syntax, in which all
+characters are significant, there is an \fIexpanded\fR syntax,
+available in all flavors of RE with the \fB\-expanded\fR switch, or in
+AREs with the embedded x option. In the expanded syntax, white-space
+characters are ignored and all characters between a \fB#\fR and the
+following newline (or the end of the RE) are ignored, permitting
+paragraphing and commenting a complex RE. There are three exceptions
+to that basic rule:
+.IP \(bu 3
+a white-space character or
+.QW \fB#\fR
+preceded by
+.QW \fB\e\fR
+is retained
+.IP \(bu 3
+white space or
+.QW \fB#\fR
+within a bracket expression is retained
+.IP \(bu 3
 white space and comments are illegal within multi-character symbols
-like the ARE `\fB(?:\fR' or the BRE `\fB\e(\fR'
-.RE
+like the ARE
+.QW \fB(?:\fR
+or the BRE
+.QW \fB\e(\fR
 .PP
 Expanded-syntax white-space characters are blank, tab, newline, and
-.VS 8.2
 any character that belongs to the \fIspace\fR character class.
-.VE 8.2
-.PP
-Finally, in an ARE,
-outside bracket expressions, the sequence `\fB(?#\fIttt\fB)\fR'
-(where
-\fIttt\fR
-is any text not containing a `\fB)\fR')
-is a comment,
-completely ignored.
-Again, this is not allowed between the characters of
-multi-character symbols like `\fB(?:\fR'.
+.PP
+Finally, in an ARE, outside bracket expressions, the sequence
+.QW \fB(?#\fIttt\fB)\fR
+(where \fIttt\fR is any text not containing a
+.QW \fB)\fR )
+is a comment, completely ignored. Again, this is not
+allowed between the characters of multi-character symbols like
+.QW \fB(?:\fR .
 Such comments are more a historical artifact than a useful facility,
-and their use is deprecated;
-use the expanded syntax instead.
-.PP
-\fINone\fR of these metasyntax extensions is available if the application
-(or an initial
-\fB***=\fR
-director)
-has specified that the user's input be treated as a literal string
-rather than as an RE.
+and their use is deprecated; use the expanded syntax instead.
+.PP
+\fINone\fR of these metasyntax extensions is available if the
+application (or an initial
+.QW \fB***=\fR
+director) has specified that the
+user's input be treated as a literal string rather than as an RE.
 .SH MATCHING
 In the event that an RE could match more than one substring of a given
-string,
-the RE matches the one starting earliest in the string.
-If the RE could match more than one substring starting at that point,
-its choice is determined by its \fIpreference\fR:
-either the longest substring, or the shortest.
-.PP
-Most atoms, and all constraints, have no preference.
-A parenthesized RE has the same preference (possibly none) as the RE.
-A quantified atom with quantifier
-\fB{\fIm\fB}\fR
-or
-\fB{\fIm\fB}?\fR
-has the same preference (possibly none) as the atom itself.
-A quantified atom with other normal quantifiers (including
-\fB{\fIm\fB,\fIn\fB}\fR
-with
-\fIm\fR
-equal to
-\fIn\fR)
-prefers longest match.
-A quantified atom with other non-greedy quantifiers (including
-\fB{\fIm\fB,\fIn\fB}?\fR
-with
-\fIm\fR
-equal to
-\fIn\fR)
-prefers shortest match.
-A branch has the same preference as the first quantified atom in it
-which has a preference.
-An RE consisting of two or more branches connected by the
-\fB|\fR
-operator prefers longest match.
-.PP
-Subject to the constraints imposed by the rules for matching the whole RE,
-subexpressions also match the longest or shortest possible substrings,
-based on their preferences,
-with subexpressions starting earlier in the RE taking priority over
-ones starting later.
-Note that outer subexpressions thus take priority over
-their component subexpressions.
-.PP
-Note that the quantifiers
-\fB{1,1}\fR
-and
-\fB{1,1}?\fR
-can be used to force longest and shortest preference, respectively,
-on a subexpression or a whole RE.
-.PP
-Match lengths are measured in characters, not collating elements.
-An empty string is considered longer than no match at all.
-For example,
-\fBbb*\fR
-matches the three middle characters of `\fBabbbc\fR',
-\fB(week|wee)(night|knights)\fR
-matches all ten characters of `\fBweeknights\fR',
+string, the RE matches the one starting earliest in the string. If
+the RE could match more than one substring starting at that point, its
+choice is determined by its \fIpreference\fR: either the longest
+substring, or the shortest.
+.PP
+Most atoms, and all constraints, have no preference. A parenthesized
+RE has the same preference (possibly none) as the RE. A quantified
+atom with quantifier \fB{\fIm\fB}\fR or \fB{\fIm\fB}?\fR has the same
+preference (possibly none) as the atom itself. A quantified atom with
+other normal quantifiers (including \fB{\fIm\fB,\fIn\fB}\fR with
+\fIm\fR equal to \fIn\fR) prefers longest match. A quantified atom
+with other non-greedy quantifiers (including \fB{\fIm\fB,\fIn\fB}?\fR
+with \fIm\fR equal to \fIn\fR) prefers shortest match. A branch has
+the same preference as the first quantified atom in it which has a
+preference. An RE consisting of two or more branches connected by the
+\fB|\fR operator prefers longest match.
+.PP
+Subject to the constraints imposed by the rules for matching the whole
+RE, subexpressions also match the longest or shortest possible
+substrings, based on their preferences, with subexpressions starting
+earlier in the RE taking priority over ones starting later. Note that
+outer subexpressions thus take priority over their component
+subexpressions.
+.PP
+Note that the quantifiers \fB{1,1}\fR and \fB{1,1}?\fR can be used to
+force longest and shortest preference, respectively, on a
+subexpression or a whole RE.
+.PP
+Match lengths are measured in characters, not collating elements. An
+empty string is considered longer than no match at all. For example,
+.QW \fBbb*\fR
+matches the three middle characters of
+.QW \fBabbbc\fR ,
+.QW \fB(week|wee)(night|knights)\fR
+matches all ten characters of
+.QW \fBweeknights\fR ,
 when
-\fB(.*).*\fR
+.QW \fB(.*).*\fR
 is matched against
-\fBabc\fR
-the parenthesized subexpression
-matches all three characters, and
-when
-\fB(a*)*\fR
+.QW \fBabc\fR
+the parenthesized subexpression matches all three characters, and when
+.QW \fB(a*)*\fR
 is matched against
-\fBbc\fR
-both the whole RE and the parenthesized
-subexpression match an empty string.
-.PP
-If case-independent matching is specified,
-the effect is much as if all case distinctions had vanished from the
-alphabet.
-When an alphabetic that exists in multiple cases appears as an
-ordinary character outside a bracket expression, it is effectively
-transformed into a bracket expression containing both cases,
-so that
-\fBx\fR
-becomes `\fB[xX]\fR'.
-When it appears inside a bracket expression, all case counterparts
-of it are added to the bracket expression, so that
-\fB[x]\fR
+.QW \fBbc\fR
+both the whole RE and the parenthesized subexpression match an empty string.
+.PP
+If case-independent matching is specified, the effect is much as if
+all case distinctions had vanished from the alphabet. When an
+alphabetic that exists in multiple cases appears as an ordinary
+character outside a bracket expression, it is effectively transformed
+into a bracket expression containing both cases, so that \fBx\fR
 becomes
-\fB[xX]\fR
-and
-\fB[^x]\fR
-becomes `\fB[^xX]\fR'.
-.PP
-If newline-sensitive matching is specified, \fB.\fR
-and bracket expressions using
-\fB^\fR
-will never match the newline character
-(so that matches will never cross newlines unless the RE
-explicitly arranges it)
-and
-\fB^\fR
-and
-\fB$\fR
-will match the empty string after and before a newline
-respectively, in addition to matching at beginning and end of string
-respectively.
-ARE
-\fB\eA\fR
+.QW \fB[xX]\fR .
+When it appears inside a bracket expression,
+all case counterparts of it are added to the bracket expression, so
+that
+.QW \fB[x]\fR
+becomes
+.QW \fB[xX]\fR
 and
-\fB\eZ\fR
+.QW \fB[^x]\fR
+becomes
+.QW \fB[^xX]\fR .
+.PP
+If newline-sensitive matching is specified, \fB.\fR and bracket
+expressions using \fB^\fR will never match the newline character (so
+that matches will never cross newlines unless the RE explicitly
+arranges it) and \fB^\fR and \fB$\fR will match the empty string after
+and before a newline respectively, in addition to matching at
+beginning and end of string respectively. ARE \fB\eA\fR and \fB\eZ\fR
 continue to match beginning or end of string \fIonly\fR.
 .PP
-If partial newline-sensitive matching is specified,
-this affects \fB.\fR
-and bracket expressions
-as with newline-sensitive matching, but not
-\fB^\fR
-and `\fB$\fR'.
+If partial newline-sensitive matching is specified, this affects
+\fB.\fR and bracket expressions as with newline-sensitive matching,
+but not \fB^\fR and \fB$\fR.
 .PP
-If inverse partial newline-sensitive matching is specified,
-this affects
-\fB^\fR
-and
-\fB$\fR
-as with
-newline-sensitive matching,
-but not \fB.\fR
-and bracket expressions.
-This isn't very useful but is provided for symmetry.
+If inverse partial newline-sensitive matching is specified, this
+affects \fB^\fR and \fB$\fR as with newline-sensitive matching, but
+not \fB.\fR and bracket expressions. This is not very useful but is
+provided for symmetry.
 .SH "LIMITS AND COMPATIBILITY"
-No particular limit is imposed on the length of REs.
-Programs intended to be highly portable should not employ REs longer
-than 256 bytes,
-as a POSIX-compliant implementation can refuse to accept such REs.
-.PP
-The only feature of AREs that is actually incompatible with
-POSIX EREs is that
-\fB\e\fR
-does not lose its special
-significance inside bracket expressions.
-All other ARE features use syntax which is illegal or has
-undefined or unspecified effects in POSIX EREs;
-the
-\fB***\fR
-syntax of directors likewise is outside the POSIX
-syntax for both BREs and EREs.
-.PP
-Many of the ARE extensions are borrowed from Perl, but some have
-been changed to clean them up, and a few Perl extensions are not present.
-Incompatibilities of note include `\fB\eb\fR', `\fB\eB\fR',
-the lack of special treatment for a trailing newline,
-the addition of complemented bracket expressions to the things
-affected by newline-sensitive matching,
-the restrictions on parentheses and back references in lookahead constraints,
-and the longest/shortest-match (rather than first-match) matching semantics.
-.PP
-The matching rules for REs containing both normal and non-greedy quantifiers
-have changed since early beta-test versions of this package.
-(The new rules are much simpler and cleaner,
-but don't work as hard at guessing the user's real intentions.)
-.PP
-Henry Spencer's original 1986 \fIregexp\fR package,
-still in widespread use (e.g., in pre-8.1 releases of Tcl),
-implemented an early version of today's EREs.
-There are four incompatibilities between \fIregexp\fR's near-EREs
-(`RREs' for short) and AREs.
-In roughly increasing order of significance:
-.PP
-.RS
-In AREs,
-\fB\e\fR
-followed by an alphanumeric character is either an
-escape or an error,
-while in RREs, it was just another way of writing the 
-alphanumeric.
-This should not be a problem because there was no reason to write
-such a sequence in RREs.
-.PP
-\fB{\fR
-followed by a digit in an ARE is the beginning of a bound,
-while in RREs,
-\fB{\fR
-was always an ordinary character.
-Such sequences should be rare,
-and will often result in an error because following characters
-will not look like a valid bound.
-.PP
-In AREs,
-\fB\e\fR
-remains a special character within `\fB[\|]\fR',
-so a literal
-\fB\e\fR
-within
-\fB[\|]\fR
-must be written `\fB\e\e\fR'.
-\fB\e\e\fR
-also gives a literal
-\fB\e\fR
-within
-\fB[\|]\fR
-in RREs,
+No particular limit is imposed on the length of REs. Programs
+intended to be highly portable should not employ REs longer than 256
+bytes, as a POSIX-compliant implementation can refuse to accept such
+REs.
+.PP
+The only feature of AREs that is actually incompatible with POSIX EREs
+is that \fB\e\fR does not lose its special significance inside bracket
+expressions. All other ARE features use syntax which is illegal or
+has undefined or unspecified effects in POSIX EREs; the \fB***\fR
+syntax of directors likewise is outside the POSIX syntax for both BREs
+and EREs.
+.PP
+Many of the ARE extensions are borrowed from Perl, but some have been
+changed to clean them up, and a few Perl extensions are not present.
+Incompatibilities of note include
+.QW \fB\eb\fR ,
+.QW \fB\eB\fR ,
+the lack of special treatment for a trailing newline, the addition of
+complemented bracket expressions to the things affected by
+newline-sensitive matching, the restrictions on parentheses and back
+references in lookahead constraints, and the longest/shortest-match
+(rather than first-match) matching semantics.
+.PP
+The matching rules for REs containing both normal and non-greedy
+quantifiers have changed since early beta-test versions of this
+package. (The new rules are much simpler and cleaner, but do not work
+as hard at guessing the user's real intentions.)
+.PP
+Henry Spencer's original 1986 \fIregexp\fR package, still in
+widespread use (e.g., in pre-8.1 releases of Tcl), implemented an
+early version of today's EREs. There are four incompatibilities
+between \fIregexp\fR's near-EREs
+.PQ RREs " for short"
+and AREs. In roughly increasing order of significance:
+.IP \(bu 3
+In AREs, \fB\e\fR followed by an alphanumeric character is either an
+escape or an error, while in RREs, it was just another way of writing
+the alphanumeric. This should not be a problem because there was no
+reason to write such a sequence in RREs.
+.IP \(bu 3
+\fB{\fR followed by a digit in an ARE is the beginning of a bound,
+while in RREs, \fB{\fR was always an ordinary character. Such
+sequences should be rare, and will often result in an error because
+following characters will not look like a valid bound.
+.IP \(bu 3
+In AREs, \fB\e\fR remains a special character within
+.QW \fB[\|]\fR ,
+so a literal \fB\e\fR within \fB[\|]\fR must be written
+.QW \fB\e\e\fR .
+\fB\e\e\fR also gives a literal \fB\e\fR within \fB[\|]\fR in RREs,
 but only truly paranoid programmers routinely doubled the backslash.
-.PP
-AREs report the longest/shortest match for the RE,
-rather than the first found in a specified search order.
-This may affect some RREs which were written in the expectation that
-the first match would be reported.
-(The careful crafting of RREs to optimize the search order for fast
-matching is obsolete (AREs examine all possible matches
-in parallel, and their performance is largely insensitive to their
-complexity) but cases where the search order was exploited to deliberately 
-find a match which was \fInot\fR the longest/shortest will need rewriting.)
-.RE
-
+.IP \(bu 3
+AREs report the longest/shortest match for the RE, rather than the
+first found in a specified search order. This may affect some RREs
+which were written in the expectation that the first match would be
+reported. (The careful crafting of RREs to optimize the search order
+for fast matching is obsolete (AREs examine all possible matches in
+parallel, and their performance is largely insensitive to their
+complexity) but cases where the search order was exploited to
+deliberately find a match which was \fInot\fR the longest/shortest
+will need rewriting.)
 .SH "BASIC REGULAR EXPRESSIONS"
-BREs differ from EREs in several respects.  `\fB|\fR', `\fB+\fR',
-and
-\fB?\fR
-are ordinary characters and there is no equivalent
-for their functionality.
-The delimiters for bounds are
-\fB\e{\fR
-and `\fB\e}\fR',
-with
-\fB{\fR
-and
-\fB}\fR
-by themselves ordinary characters.
-The parentheses for nested subexpressions are
-\fB\e(\fR
-and `\fB\e)\fR',
-with
-\fB(\fR
-and
-\fB)\fR
-by themselves ordinary characters.
-\fB^\fR
-is an ordinary character except at the beginning of the
-RE or the beginning of a parenthesized subexpression,
-\fB$\fR
-is an ordinary character except at the end of the
-RE or the end of a parenthesized subexpression,
-and
-\fB*\fR
-is an ordinary character if it appears at the beginning of the
-RE or the beginning of a parenthesized subexpression
-(after a possible leading `\fB^\fR').
-Finally,
-single-digit back references are available,
-and
-\fB\e<\fR
-and
-\fB\e>\fR
-are synonyms for
-\fB[[:<:]]\fR
+BREs differ from EREs in several respects.
+.QW \fB|\fR ,
+.QW \fB+\fR ,
+and \fB?\fR are ordinary characters and there is no equivalent for their
+functionality. The delimiters for bounds are \fB\e{\fR and
+.QW \fB\e}\fR ,
+with \fB{\fR and \fB}\fR by themselves ordinary characters. The
+parentheses for nested subexpressions are \fB\e(\fR and
+.QW \fB\e)\fR ,
+with \fB(\fR and \fB)\fR by themselves ordinary
+characters. \fB^\fR is an ordinary character except at the beginning
+of the RE or the beginning of a parenthesized subexpression, \fB$\fR
+is an ordinary character except at the end of the RE or the end of a
+parenthesized subexpression, and \fB*\fR is an ordinary character if
+it appears at the beginning of the RE or the beginning of a
+parenthesized subexpression (after a possible leading
+.QW \fB^\fR ).
+Finally, single-digit back references are available, and \fB\e<\fR and
+\fB\e>\fR are synonyms for
+.QW \fB[[:<:]]\fR
 and
-\fB[[:>:]]\fR
-respectively;
-no other escapes are available.
-
+.QW \fB[[:>:]]\fR
+respectively; no other escapes are available.
 .SH "SEE ALSO"
 RegExp(3), regexp(n), regsub(n), lsearch(n), switch(n), text(n)
-
 .SH KEYWORDS
 match, regular expression, string
+.\" Local Variables:
+.\" mode: nroff
+.\" End:
diff --git a/doc/read.n b/doc/read.n
index 9584756..5398b08 100644
--- a/doc/read.n
+++ b/doc/read.n
@@ -30,13 +30,11 @@ the channel is configured to use a multi-byte encoding, then the
 number of characters read may not be the same as the number of bytes
 read.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as the
 Tcl standard input channel (\fBstdin\fR), the return value from an
 invocation of \fBopen\fR or \fBsocket\fR, or the result of a channel
 creation command provided by a Tcl extension. The channel must have
 been opened for input.
-.VE
 .PP
 If \fIchannelId\fR is in nonblocking mode, the command may not read as
 many characters as requested: once all available input has been read,
@@ -78,7 +76,7 @@ with each line in the file corresponding to an element in the list:
 set fl [open /proc/meminfo]
 set data [\fBread\fR $fl]
 close $fl
-set lines [split $data \\n]
+set lines [split $data \en]
 .CE
 
 .SH "SEE ALSO"
diff --git a/doc/refchan.n b/doc/refchan.n
new file mode 100644
index 0000000..577c78a
--- /dev/null
+++ b/doc/refchan.n
@@ -0,0 +1,340 @@
+'\" 
+'\" Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net>
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.so man.macros
+.TH refchan n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+.\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+refchan \- Command handler API of reflected channels, version 1
+.SH SYNOPSIS
+\fBcmdPrefix \fIoption\fR ?\fIarg arg ...\fR?
+.BE
+.SH DESCRIPTION
+.PP
+The Tcl-level handler for a reflected channel has to be a command with
+subcommands (termed an \fIensemble\fR, as it is a command such as that
+created by \fBnamespace ensemble create\fR, though the implementation
+of handlers for reflected channel \fIis not\fR tied to \fBnamespace
+ensemble\fRs in any way). Note that \fIcmdPrefix\fR is whatever was
+specified in the call to \fBchan create\fR, and may consist of
+multiple arguments; this will be expanded to multiple words in place
+of the prefix.
+.PP
+Of all the possible subcommands, the handler \fImust\fR support
+\fBinitialize\fR, \fBfinalize\fR, and \fBwatch\fR. Support for the
+other subcommands is optional.
+.SS "MANDATORY SUBCOMMANDS"
+.TP
+\fIcmdPrefix \fBinitialize \fIchannelId mode\fR
+.
+An invocation of this subcommand will be the first call the
+\fIcmdPrefix\fR will receive for the specified new \fIchannelId\fR. It
+is the responsibility of this subcommand to set up any internal data
+structures required to keep track of the channel and its state.
+.RS
+.PP
+The return value of the method has to be a list containing the names
+of all subcommands supported by the \fIcmdPrefix\fR. This also tells
+the Tcl core which version of the API for reflected channels is used by
+this command handler.
+.PP
+Any error thrown by the method will abort the creation of the channel
+and no channel will be created. The thrown error will appear as error
+thrown by \fBchan create\fR. Any exception other than an \fBerror\fR
+(e.g. \fBbreak\fR, etc.) is treated as (and converted to) an error.
+.PP
+\fBNote:\fR If the creation of the channel was aborted due to failures
+here, then the \fBfinalize\fR subcommand will not be called.
+.PP
+The \fImode\fR argument tells the handler whether the channel was
+opened for reading, writing, or both. It is a list containing any of
+the strings \fBread\fR or \fBwrite\fR. The list will always
+contain at least one element.
+.PP
+The subcommand must throw an error if the chosen mode is not
+supported by the \fIcmdPrefix\fR.
+.RE
+.TP
+\fIcmdPrefix \fBfinalize \fIchannelId\fR
+.
+An invocation of this subcommand will be the last call the
+\fIcmdPrefix\fR will receive for the specified \fIchannelId\fR. It will
+be generated just before the destruction of the data structures of the
+channel held by the Tcl core. The command handler \fImust not\fR
+access the \fIchannelId\fR anymore in no way. Upon this subcommand being
+called, any internal resources allocated to this channel must be
+cleaned up.
+.RS
+.PP
+The return value of this subcommand is ignored.
+.PP
+If the subcommand throws an error the command which caused its
+invocation (usually \fBclose\fR) will appear to have thrown this
+error. Any exception beyond \fIerror\fR (e.g. \fIbreak\fR, etc.) is
+treated as (and converted to) an error.
+.PP
+This subcommand is not invoked if the creation of the channel was
+aborted during \fBinitialize\fR (See above).
+.RE
+.TP
+\fIcmdPrefix \fBwatch \fIchannelId eventspec\fR
+.
+This subcommand notifies the \fIcmdPrefix\fR that the specified
+\fIchannelId\fR is interested in the events listed in the
+\fIeventspec\fR. This argument is a list containing any of \fBread\fR
+and \fBwrite\fR. The list may be empty, which signals that the
+channel does not wish to be notified of any events. In that situation,
+the handler should disable event generation completely.
+.RS
+.PP
+\fBWarning:\fR Any return value of the subcommand is ignored. This
+includes all errors thrown by the subcommand, break, continue, and
+custom return codes.
+.PP
+This subcommand interacts with \fBchan postevent\fR. Trying to post an
+event which was not listed in the last call to \fBwatch\fR will cause
+\fBchan postevent\fR to throw an error.
+.RE
+.SS "OPTIONAL SUBCOMMANDS"
+.TP
+\fIcmdPrefix \fBread \fIchannelId count\fR
+.
+This \fIoptional\fR subcommand is called when the user requests data from the
+channel \fIchannelId\fR. \fIcount\fR specifies how many \fBbytes\fR have been
+requested. If the subcommand is not supported then it is not possible to read
+from the channel handled by the command.
+.RS
+.PP
+The return value of this subcommand is taken as the requested data
+\fIbytes\fR. If the returned data contains more bytes than requested,
+an error will be signaled and later thrown by the command which
+performed the read (usually \fBgets\fR or \fBread\fR). However,
+returning fewer bytes than requested is acceptable.
+.PP
+Note that returning nothing (0 bytes) is a signal to the higher layers
+that \fBEOF\fR has been reached on the channel. To signal that the
+channel is out of data right now, but has not yet reached \fBEOF\fR,
+it is necessary to throw the error "EAGAIN", i.e. to either
+.PP
+.CS
+return -code error EAGAIN
+.CE
+or
+.CS
+error EAGAIN
+.CE
+.PP
+For extensibility any error whose value is a negative integer number
+will cause the higher layers to set the C-level variable "\fBerrno\fR"
+to the absolute value of this number, signaling a system error. This
+means that both
+.PP
+.CS
+return -code error -11
+.CE
+and
+.CS
+error -11
+.CE
+.PP
+are equivalent to the examples above, using the more readable string "EAGAIN".
+No other error value has such a mapping to a symbolic string.
+.PP
+If the subcommand throws any other error, the command which caused its
+invocation (usually \fBgets\fR, or \fBread\fR) will appear to have
+thrown this error. Any exception beyond \fIerror\fR, (e.g.
+\fIbreak\fR, etc.) is treated as and converted to an error.
+.RE
+.TP
+\fIcmdPrefix \fBwrite \fIchannelId data\fR
+.
+This \fIoptional\fR subcommand is called when the user writes data to
+the channel \fIchannelId\fR. The \fIdata\fR argument contains \fIbytes\fR, not
+characters. Any type of transformation (EOL, encoding) configured for
+the channel has already been applied at this point. If this subcommand
+is not supported then it is not possible to write to the channel
+handled by the command.
+.RS
+.PP
+The return value of the subcommand is taken as the number of bytes
+written by the channel. Anything non-numeric will cause an error to be
+signaled and later thrown by the command which performed the write. A
+negative value implies that the write failed. Returning a value
+greater than the number of bytes given to the handler, or zero, is
+forbidden and will cause the Tcl core to throw an error.
+.PP
+To signal that the channel is not able to accept data for writing
+right now, it is necessary to throw the error "EAGAIN", i.e. to either
+.PP
+.CS
+return -code error EAGAIN
+.CE
+or
+.CS
+error EAGAIN
+.CE
+.PP
+For extensibility any error whose value is a negative integer number
+will cause the higher layers to set the C-level variable "\fBerrno\fR"
+to the absolute value of this number, signaling a system error.
+However, note that the exact mapping between these error numbers and
+their meanings is operating system dependent.
+.PP
+For example, while on Linux both
+.PP
+.CS
+return -code error -11
+.CE
+and
+.CS
+error -11
+.CE
+.PP
+are equivalent to the examples above, using the more readable string "EAGAIN",
+this is not true for BSD, where the equivalent number is -35.
+.PP
+The symbolic string however is the same across systems, and internally
+translated to the correct number. No other error value has such a mapping
+to a symbolic string.
+.PP
+If the subcommand throws any other error the command which caused its
+invocation (usually \fBputs\fR) will appear to have thrown this error.
+Any exception beyond \fIerror\fR (e.g.\ \fIbreak\fR, etc.) is treated
+as and converted to an error.
+.RE
+.TP
+\fIcmdPrefix \fBseek \fIchannelId offset base\fR
+.
+This \fIoptional\fR subcommand is responsible for the handling of
+\fBseek\fR and \fBtell\fR requests on the channel \fIchannelId\fR. If it is not
+supported then seeking will not be possible for the channel.
+.RS
+.PP
+The \fIbase\fR argument is one of
+.TP 10
+\fBstart\fR
+.
+Seeking is relative to the beginning of the channel.
+.TP 10
+\fBcurrent\fR
+.
+Seeking is relative to the current seek position.
+.TP 10
+\fBend\fR
+.
+Seeking is relative to the end of the channel.
+.PP
+The \fIbase\fR argument of the builtin \fBchan seek\fR command takes
+the same names.
+.PP
+The \fIoffset\fR is an integer number specifying the amount of
+\fBbytes\fR to seek forward or backward. A positive number should seek
+forward, and a negative number should seek backward.
+.PP
+A channel may provide only limited seeking. For example sockets can
+seek forward, but not backward.
+.PP
+The return value of the subcommand is taken as the (new) location of
+the channel, counted from the start. This has to be an integer number
+greater than or equal to zero.
+.PP
+If the subcommand throws an error the command which caused its
+invocation (usually \fBseek\fR, or \fBtell\fR) will appear to have
+thrown this error. Any exception beyond \fIerror\fR (e.g. \fIbreak\fR,
+etc.) is treated as and converted to an error.
+.PP
+The offset/base combination of 0/\fBcurrent\fR signals a \fBtell\fR
+request, i.e. seek nothing relative to the current location, making
+the new location identical to the current one, which is then returned.
+.RE
+.TP
+\fIcmdPrefix \fBconfigure \fIchannelId option value\fR
+.
+This \fIoptional\fR subcommand is for setting the type-specific options of
+channel \fIchannelId\fR. The \fIoption\fR argument indicates the option to be
+written, and the \fIvalue\fR argument indicates the value to set the option to.
+.RS
+.PP
+This subcommand will never try to update more than one option at a
+time; that is behavior implemented in the Tcl channel core.
+.PP
+The return value of the subcommand is ignored.
+.PP
+If the subcommand throws an error the command which performed the
+(re)configuration or query (usually \fBfconfigure\fR or \fBchan
+configure\fR) will appear to have thrown this error. Any exception
+beyond \fIerror\fR (e.g. \fIbreak\fR, etc.) is treated as and
+converted to an error.
+.RE
+.TP
+\fIcmdPrefix \fBcget \fIchannelId option\fR
+.
+This \fIoptional\fR subcommand is used when reading a single type-specific
+option of channel \fIchannelId\fR. If this subcommand is supported then the
+subcommand \fBcgetall\fR must be supported as well.
+.RS
+.PP
+The subcommand should return the value of the specified \fIoption\fR.
+.PP
+If the subcommand throws an error, the command which performed the
+(re)configuration or query (usually \fBfconfigure\fR) will appear to
+have thrown this error. Any exception beyond \fIerror\fR (e.g.
+\fIbreak\fR, etc.) is treated as and converted to an error.
+.RE
+.TP
+\fIcmdPrefix \fBcgetall \fIchannelId\fR
+.
+This \fIoptional\fR subcommand is used for reading all type-specific options
+of channel \fIchannelId\fR. If this subcommand is supported then the
+subcommand \fBcget\fR has to be supported as well.
+.RS
+.PP
+The subcommand should return a list of all options and their values.
+This list must have an even number of elements.
+.PP
+If the subcommand throws an error the command which performed the
+(re)configuration or query (usually \fBfconfigure\fR) will appear to
+have thrown this error. Any exception beyond \fIerror\fR (e.g.
+\fIbreak\fR, etc.) is treated as and converted to an error.
+.RE
+.TP
+\fIcmdPrefix \fBblocking \fIchannelId mode\fR
+.
+This \fIoptional\fR subcommand handles changes to the blocking mode of the
+channel \fIchannelId\fR. The \fImode\fR is a boolean flag. A true value means
+that the channel has to be set to blocking, and a false value means that the
+channel should be non-blocking.
+.RS
+.PP
+The return value of the subcommand is ignored.
+.PP
+If the subcommand throws an error the command which caused its
+invocation (usually \fBfconfigure\fR) will appear to have thrown this
+error. Any exception beyond \fIerror\fR (e.g. \fIbreak\fR, etc.) is
+treated as and converted to an error.
+.RE
+.SH NOTES
+Some of the functions supported in channels defined in Tcl's C
+interface are not available to channels reflected to the Tcl level.
+.PP
+The function \fBTcl_DriverGetHandleProc\fR is not supported; i.e.
+reflected channels do not have OS specific handles.
+.PP
+The function \fBTcl_DriverHandlerProc\fR is not supported. This driver
+function is relevant only for stacked channels, i.e. transformations.
+Reflected channels are always base channels, not transformations.
+.PP
+The function \fBTcl_DriverFlushProc\fR is not supported. This is
+because the current generic I/O layer of Tcl does not use this
+function anywhere at all. Therefore support at the Tcl level makes no
+sense either. This may be altered in the future (through extending the
+API defined here and changing its version number) should the function
+be used at some time in the future.
+.SH "SEE ALSO"
+chan(n)
+.SH KEYWORDS
+channel, reflection
diff --git a/doc/regexp.n b/doc/regexp.n
index a1692bd..100f0d8 100644
--- a/doc/regexp.n
+++ b/doc/regexp.n
@@ -18,8 +18,8 @@ regexp \- Match a regular expression against a string
 .SH DESCRIPTION
 .PP
 Determines whether the regular expression \fIexp\fR matches part or
-all of \fIstring\fR and returns 1 if it does, 0 if it doesn't, unless
-\fB-inline\fR is specified (see below).
+all of \fIstring\fR and returns 1 if it does, 0 if it does not, unless
+\fB\-inline\fR is specified (see below).
 (Regular expression matching is described in the \fBre_syntax\fR
 reference page.)
 .LP
@@ -60,20 +60,37 @@ range of characters.
 \fB\-line\fR
 Enables newline-sensitive matching.  By default, newline is a
 completely ordinary character with no special meaning.  With this
-flag, `[^' bracket expressions and `.' never match newline, `^'
+flag,
+.QW [^
+bracket expressions and
+.QW .
+never match newline,
+.QW ^
 matches an empty string after any newline in addition to its normal
-function, and `$' matches an empty string before any newline in
+function, and
+.QW $
+matches an empty string before any newline in
 addition to its normal function.  This flag is equivalent to
 specifying both \fB\-linestop\fR and \fB\-lineanchor\fR, or the
 \fB(?n)\fR embedded option (see the \fBre_syntax\fR manual page).
 .TP 15
 \fB\-linestop\fR
-Changes the behavior of `[^' bracket expressions and `.' so that they
+Changes the behavior of
+.QW [^
+bracket expressions and
+.QW .
+so that they
 stop at newlines.  This is the same as specifying the \fB(?p)\fR
 embedded option (see the \fBre_syntax\fR manual page).
 .TP 15
 \fB\-lineanchor\fR
-Changes the behavior of `^' and `$' (the ``anchors'') so they match the
+Changes the behavior of
+.QW ^
+and
+.QW $
+(the
+.QW anchors )
+so they match the
 beginning and end of a line respectively.  This is the same as
 specifying the \fB(?w)\fR embedded option (see the \fBre_syntax\fR
 manual page).
@@ -81,7 +98,6 @@ manual page).
 \fB\-nocase\fR
 Causes upper-case characters in \fIstring\fR to be treated as
 lower case during the matching process.
-.VS 8.3
 .TP 15
 \fB\-all\fR
 Causes the regular expression to be matched as many times as possible
@@ -91,69 +107,85 @@ the last match only.
 .TP 15
 \fB\-inline\fR
 Causes the command to return, as a list, the data that would otherwise
-be placed in match variables.  When using \fB-inline\fR,
-match variables may not be specified.  If used with \fB-all\fR, the
+be placed in match variables.  When using \fB\-inline\fR,
+match variables may not be specified.  If used with \fB\-all\fR, the
 list will be concatenated at each iteration, such that a flat list is
 always returned.  For each match iteration, the command will append the
 overall match data, plus one element for each subexpression in the
 regular expression.  Examples are:
 .CS
-    regexp -inline -- {\\w(\\w)} " inlined "
- => {in n}
-    regexp -all -inline -- {\\w(\\w)} " inlined "
- => {in n li i ne e}
+\fBregexp\fR -inline -- {\ew(\ew)} " inlined "
+      \fI\(-> in n\fR
+\fBregexp\fR -all -inline -- {\ew(\ew)} " inlined "
+      \fI\(-> in n li i ne e\fR
 .CE
 .TP 15
 \fB\-start\fR \fIindex\fR
 Specifies a character index offset into the string to start
-matching the regular expression at.  When using this switch, `^'
-will not match the beginning of the line, and \\A will still
+matching the regular expression at.  
+.VS 8.5
+The \fIindex\fR value is interpreted in the same manner
+as the \fIindex\fR argument to \fBstring index\fR.
+.VE 8.5
+When using this switch,
+.QW ^
+will not match the beginning of the line, and \eA will still
 match the start of the string at \fIindex\fR.  If \fB\-indices\fR
 is specified, the indices will be indexed starting from the
 absolute beginning of the input string.
 \fIindex\fR will be constrained to the bounds of the input string.
-.VE 8.3
 .TP 15
 \fB\-\|\-\fR
 Marks the end of switches.  The argument following this one will
 be treated as \fIexp\fR even if it starts with a \fB\-\fR.
 .PP
-If there are more \fIsubMatchVar\fR's than parenthesized
+If there are more \fIsubMatchVar\fRs than parenthesized
 subexpressions within \fIexp\fR, or if a particular subexpression
-in \fIexp\fR doesn't match the string (e.g. because it was in a
-portion of the expression that wasn't matched), then the corresponding
-\fIsubMatchVar\fR will be set to ``\fB\-1 \-1\fR'' if \fB\-indices\fR
-has been specified or to an empty string otherwise.
+in \fIexp\fR does not match the string (e.g. because it was in a
+portion of the expression that was not matched), then the corresponding
+\fIsubMatchVar\fR will be set to
+.QW "\fB\-1 \-1\fR"
+if \fB\-indices\fR has been specified or to an empty string otherwise.
 .SH EXAMPLES
+.PP
 Find the first occurrence of a word starting with \fBfoo\fR in a
 string that is not actually an instance of \fBfoobar\fR, and get the
 letters following it up to the end of the word into a variable:
 .CS
-\fBregexp\fR {\\<foo(?!bar\\>)(\\w*)} $string \-> restOfWord
+\fBregexp\fR {\emfoo(?!bar\eM)(\ew*)} $string \-> restOfWord
 .CE
 Note that the whole matched substring has been placed in the variable
-\fB\->\fR which is a name chosen to look nice given that we are not
+.QW \fB\->\fR ,
+which is a name chosen to look nice given that we are not
 actually interested in its contents.
 .PP
 Find the index of the word \fBbadger\fR (in any case) within a string
 and store that in the variable \fBlocation\fR:
 .CS
-\fBregexp\fR \-indices {(?i)\\<badger\\>} $string location
+\fBregexp\fR \-indices {(?i)\embadger\eM} $string location
+.CE
+This could also be written as a \fIbasic\fR regular expression (as opposed
+to using the default syntax of \fIadvanced\fR regular expressions) match by
+prefixing the expression with a suitable flag:
+.CS
+\fBregexp\fR \-indices {(?ib)\e<badger\e>} $string location
 .CE
 .PP
-Count the number of octal digits in a string:
+This counts the number of octal digits in a string:
 .CS
 \fBregexp\fR \-all {[0\-7]} $string
 .CE
 .PP
-List all words (consisting of all sequences of non-whitespace
-characters) in a string:
+This lists all words (consisting of all sequences of non-whitespace
+characters) in a string, and is useful as a more powerful version of the
+\fBsplit\fR command:
 .CS
-\fBregexp\fR \-all \-inline {\\S+} $string
+\fBregexp\fR \-all \-inline {\eS+} $string
 .CE
-
 .SH "SEE ALSO"
-re_syntax(n), regsub(n)
-
+re_syntax(n), regsub(n),
+.VS 8.5
+string(n)
+.VE
 .SH KEYWORDS
-match, regular expression, string
+match, parsing, pattern, regular expression, splitting, string
diff --git a/doc/registry.n b/doc/registry.n
index 6809cb7..e4371e6 100644
--- a/doc/registry.n
+++ b/doc/registry.n
@@ -17,7 +17,6 @@ registry \- Manipulate the Windows registry
 .sp
 \fBregistry \fIoption\fR \fIkeyName\fR ?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBregistry\fR package provides a general set of operations for
@@ -28,29 +27,28 @@ as a corrupted registry can leave your system in an unusable state.
 .PP
 \fIKeyName\fR is the name of a registry key.  Registry keys must be
 one of the following forms:
-.IP
+.RS
+.PP
 \fB\e\e\fIhostname\fB\e\fIrootname\fB\e\fIkeypath\fR
-.IP
+.PP
 \fIrootname\fB\e\fIkeypath\fR
-.IP
+.PP
 \fIrootname\fR
+.RE
 .PP
 \fIHostname\fR specifies the name of any valid Windows
 host that exports its registry.  The \fIrootname\fR component must be
 one of \fBHKEY_LOCAL_MACHINE\fR, \fBHKEY_USERS\fR,
-.VS
 \fBHKEY_CLASSES_ROOT\fR, \fBHKEY_CURRENT_USER\fR,
 \fBHKEY_CURRENT_CONFIG\fR, \fBHKEY_PERFORMANCE_DATA\fR, or
 \fBHKEY_DYN_DATA\fR.  The \fIkeypath\fR can be one or more
-.VE
 registry key names separated by backslash (\fB\e\fR) characters.
 .PP
 \fIOption\fR indicates what to do with the registry key name.  Any
 unique abbreviation for \fIoption\fR is acceptable.  The valid options
 are:
-.VS 8.4
 .TP
-\fBregistry broadcast \fIkeyName\fR ?\fI-timeout milliseconds\fR?
+\fBregistry broadcast \fIkeyName\fR ?\fB\-timeout \fImilliseconds\fR?
 .
 Sends a broadcast message to the system and running programs to notify them
 of certain updates.  This is necessary to propagate changes to key registry
@@ -59,13 +57,22 @@ milliseconds, to wait for applications to respond to the broadcast message.
 It defaults to 3000.  The following example demonstrates how to add a path
 to the global Environment and notify applications of the change without
 requiring a logoff/logon step (assumes admin privileges):
+.RS
+.PP
 .CS
-set regPath {HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment}
-set curPath [registry get $regPath "Path"]
-registry set $regPath "Path" "$curPath;$addPath"
-registry broadcast "Environment"
+set regPath [join {
+    HKEY_LOCAL_MACHINE
+    SYSTEM
+    CurrentControlSet
+    Control
+    {Session Manager}
+    Environment
+} "\e\e"]
+set curPath [\fBregistry get\fR $regPath "Path"]
+\fBregistry set\fR $regPath "Path" "$curPath;$addPath"
+\fBregistry broadcast\fR "Environment"
 .CE
-.VE 8.4
+.RE
 .TP
 \fBregistry delete \fIkeyName\fR ?\fIvalueName\fR?
 .
@@ -81,11 +88,11 @@ did not exist, the command has no effect.
 Returns the data associated with the value \fIvalueName\fR under the key
 \fIkeyName\fR.  If either the key or the value does not exist, then an
 error is generated.  For more details on the format of the returned
-data, see SUPPORTED TYPES, below.
+data, see \fBSUPPORTED TYPES\fR, below.
 .TP
 \fBregistry keys \fIkeyName\fR ?\fIpattern\fR?
 .
-If \fIpattern\fR isn't specified, returns a list of names of all the
+If \fIpattern\fR is not specified, returns a list of names of all the
 subkeys of \fIkeyName\fR.  If \fIpattern\fR is specified, only those
 names matching \fIpattern\fR are returned.  Matching is determined
 using the same rules as for \fBstring\fR \fBmatch\fR.  If the
@@ -93,27 +100,26 @@ specified \fIkeyName\fR does not exist, then an error is generated.
 .TP
 \fBregistry set \fIkeyName\fR ?\fIvalueName data \fR?\fItype\fR??
 .
-If \fIvalueName\fR isn't specified, creates the key \fIkeyName\fR if
-it doesn't already exist.  If \fIvalueName\fR is specified, creates
+If \fIvalueName\fR is not specified, creates the key \fIkeyName\fR if
+it does not already exist.  If \fIvalueName\fR is specified, creates
 the key \fIkeyName\fR and value \fIvalueName\fR if necessary.  The
 contents of \fIvalueName\fR are set to \fIdata\fR with the type
-indicated by \fItype\fR.  If \fItype\fR isn't specified, the type
+indicated by \fItype\fR.  If \fItype\fR is not specified, the type
 \fBsz\fR is assumed.  For more details on the data and type arguments,
-see SUPPORTED TYPES below.
+see \fBSUPPORTED TYPES\fR below.
 .TP
 \fBregistry type \fIkeyName valueName\fR
 .
 Returns the type of the value \fIvalueName\fR in the key
 \fIkeyName\fR.  For more information on the possible types, see
-SUPPORTED TYPES, below.
+\fBSUPPORTED TYPES\fR, below.
 .TP
 \fBregistry values \fIkeyName\fR ?\fIpattern\fR?
 .
-If \fIpattern\fR isn't specified, returns a list of names of all the
+If \fIpattern\fR is not specified, returns a list of names of all the
 values of \fIkeyName\fR.  If \fIpattern\fR is specified, only those
 names matching \fIpattern\fR are returned.  Matching is determined
 using the same rules as for \fBstring\fR \fBmatch\fR.
-
 .SH "SUPPORTED TYPES"
 Each value under a key in the registry contains some data of a
 particular type in a type-specific representation.  The \fBregistry\fR
@@ -145,8 +151,9 @@ represented in Tcl as a string.
 .
 The registry value contains a null-terminated string that contains
 unexpanded references to environment variables in the normal Windows
-style (for example, "%PATH%").  The data is represented in Tcl as a
-string.
+style (for example,
+.QW %PATH% ).
+The data is represented in Tcl as a string.
 .TP
 \fBdword\fR
 .
@@ -182,6 +189,7 @@ The registry command is only available on Windows.
 .SH EXAMPLE
 Print out how double-clicking on a Tcl script file will invoke a Tcl
 interpreter:
+.PP
 .CS
 package require registry
 set ext .tcl
@@ -195,6 +203,5 @@ set command [\fBregistry get\fR $path {}]
 
 puts "$ext opens with $command"
 .CE
-
 .SH KEYWORDS
 registry
diff --git a/doc/regsub.n b/doc/regsub.n
index 4e5e88d..5adfd61 100644
--- a/doc/regsub.n
+++ b/doc/regsub.n
@@ -13,40 +13,41 @@
 .SH NAME
 regsub \- Perform substitutions based on regular expression pattern matching
 .SH SYNOPSIS
-.VS 8.4
 \fBregsub \fR?\fIswitches\fR? \fIexp string subSpec \fR?\fIvarName\fR?
-.VE 8.4
 .BE
-
 .SH DESCRIPTION
 .PP
 This command matches the regular expression \fIexp\fR against
 \fIstring\fR,
-.VS 8.4
 and either copies \fIstring\fR to the variable whose name is
 given by \fIvarName\fR or returns \fIstring\fR if \fIvarName\fR is not
 present.
-.VE 8.4
 (Regular expression matching is described in the \fBre_syntax\fR
 reference page.)
 If there is a match, then while copying \fIstring\fR to \fIvarName\fR
-.VS 8.4
 (or to the result of this command if \fIvarName\fR is not present)
-.VE 8.4
 the portion of \fIstring\fR that
 matched \fIexp\fR is replaced with \fIsubSpec\fR.
-If \fIsubSpec\fR contains a ``&'' or ``\e0'', then it is replaced
-in the substitution with the portion of \fIstring\fR that
-matched \fIexp\fR.
-If \fIsubSpec\fR contains a ``\e\fIn\fR'', where \fIn\fR is a digit
+If \fIsubSpec\fR contains a
+.QW &
+or
+.QW \e0 ,
+then it is replaced in the substitution with the portion of
+\fIstring\fR that matched \fIexp\fR.
+If \fIsubSpec\fR contains a
+.QW \e\fIn\fR ,
+where \fIn\fR is a digit
 between 1 and 9, then it is replaced in the substitution with
-the portion of \fIstring\fR that matched the \fIn\fR-th
+the portion of \fIstring\fR that matched the \fIn\fR'th
 parenthesized subexpression of \fIexp\fR.
 Additional backslashes may be used in \fIsubSpec\fR to prevent special
-interpretation of ``&'' or ``\e0'' or ``\e\fIn\fR'' or
-backslash.
+interpretation of
+.QW & ,
+.QW \e0 ,
+.QW \e\fIn\fR
+and backslashes.
 The use of backslashes in \fIsubSpec\fR tends to interact badly
-with the Tcl parser's use of backslashes, so it's generally
+with the Tcl parser's use of backslashes, so it is generally
 safest to enclose \fIsubSpec\fR in braces if it includes
 backslashes.
 .LP
@@ -59,7 +60,10 @@ All ranges in \fIstring\fR that match \fIexp\fR are found and
 substitution is performed for each of these ranges.
 Without this switch only the first
 matching range is found and substituted.
-If \fB\-all\fR is specified, then ``&'' and ``\e\fIn\fR''
+If \fB\-all\fR is specified, then
+.QW &
+and
+.QW \e\fIn\fR
 sequences are handled for each substitution using the information
 from the corresponding match.
 .TP 15
@@ -70,21 +74,37 @@ the \fB(?x)\fR embedded option (see the \fBre_syntax\fR manual page).
 .TP 15
 \fB\-line\fR
 Enables newline-sensitive matching.  By default, newline is a
-completely ordinary character with no special meaning.  With this
-flag, `[^' bracket expressions and `.' never match newline, `^'
+completely ordinary character with no special meaning.  With this flag,
+.QW [^
+bracket expressions and
+.QW .
+never match newline,
+.QW ^
 matches an empty string after any newline in addition to its normal
-function, and `$' matches an empty string before any newline in
+function, and
+.QW $
+matches an empty string before any newline in
 addition to its normal function.  This flag is equivalent to
 specifying both \fB\-linestop\fR and \fB\-lineanchor\fR, or the
 \fB(?n)\fR embedded option (see the \fBre_syntax\fR manual page).
 .TP 15
 \fB\-linestop\fR
-Changes the behavior of `[^' bracket expressions and `.' so that they
+Changes the behavior of
+.QW [^
+bracket expressions and
+.QW .
+so that they
 stop at newlines.  This is the same as specifying the \fB(?p)\fR
 embedded option (see the \fBre_syntax\fR manual page).
 .TP 15
 \fB\-lineanchor\fR
-Changes the behavior of `^' and `$' (the ``anchors'') so they match the
+Changes the behavior of
+.QW ^
+and
+.QW $
+(the
+.QW anchors )
+so they match the
 beginning and end of a line respectively.  This is the same as
 specifying the \fB(?w)\fR embedded option (see the \fBre_syntax\fR
 manual page).
@@ -96,8 +116,14 @@ by \fIsubSpec\fR use the original unconverted form of \fIstring\fR.
 .TP 10
 \fB\-start\fR \fIindex\fR
 Specifies a character index offset into the string to start
-matching the regular expression at.  When using this switch, `^'
-will not match the beginning of the line, and \\A will still
+matching the regular expression at.  
+.VS 8.5
+The \fIindex\fR value is interpreted in the same manner
+as the \fIindex\fR argument to \fBstring index\fR.
+.VE 8.5
+When using this switch,
+.QW ^
+will not match the beginning of the line, and \eA will still
 match the start of the string at \fIindex\fR.
 \fIindex\fR will be constrained to the bounds of the input string.
 .TP 10
@@ -105,42 +131,51 @@ match the start of the string at \fIindex\fR.
 Marks the end of switches.  The argument following this one will
 be treated as \fIexp\fR even if it starts with a \fB\-\fR.
 .PP
-.VS 8.4
 If \fIvarName\fR is supplied, the command returns a count of the
 number of matching ranges that were found and replaced, otherwise the
 string after replacement is returned.
-.VE 8.4
 See the manual entry for \fBregexp\fR for details on the interpretation
 of regular expressions.
 .SH EXAMPLES
+.PP
 Replace (in the string in variable \fIstring\fR) every instance of
 \fBfoo\fR which is a word by itself with \fBbar\fR:
 .CS
-\fBregsub\fR -all {\e<foo\e>} $string bar string
+\fBregsub\fR -all {\emfoo\eM} $string bar string
+.CE
+or (using the
+.QW "basic regular expression"
+syntax):
+.CS
+\fBregsub\fR -all {(?b)\e<foo\e>} $string bar string
 .CE
 .PP
 Insert double-quotes around the first instance of the word
-\fBinteresting\fR, however it is capitalised.
+\fBinteresting\fR, however it is capitalized.
 .CS
-\fBregsub\fR -nocase {\e<interesting\e>} $string {"&"} string
+\fBregsub\fR -nocase {\eyinteresting\ey} $string {"&"} string
 .CE
 .PP
 Convert all non-ASCII and Tcl-significant characters into \eu escape
 sequences by using \fBregsub\fR and \fBsubst\fR in combination:
 .CS
-# This RE is just a character class for everything "bad"
-set RE {[][{}\e$\es\eu0100-\euffff]}
+# This RE is just a character class for almost everything "bad"
+set RE {[][{};#\e\e\e$ \er\et\eu0080-\euffff]}
 
 # We will substitute with a fragment of Tcl script in brackets
 set substitution {[format \e\e\e\eu%04x [scan "\e\e&" %c]]}
 
 # Now we apply the substitution to get a subst-string that
-# will perform the computational parts of the conversion.
-set quoted [subst [\fBregsub\fR -all $RE $string $substitution]]
+# will perform the computational parts of the conversion. Note
+# that newline is handled specially through \fBstring map\fR since
+# backslash-newline is a special sequence.
+set quoted [subst [string map {\en {\e\eu000a}} \e
+        [\fBregsub\fR -all $RE $string $substitution]]]
 .CE
-
 .SH "SEE ALSO"
-regexp(n), re_syntax(n), subst(n)
-
+regexp(n), re_syntax(n), subst(n),
+.VS 8.5
+string(n)
+.VE
 .SH KEYWORDS
-match, pattern, regular expression, substitute
+match, pattern, quoting, regular expression, substitute
diff --git a/doc/return.n b/doc/return.n
index 25cf8b4..b08de4a 100644
--- a/doc/return.n
+++ b/doc/return.n
@@ -1,32 +1,45 @@
 '\"
 '\" Copyright (c) 1993 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
+'\" Contributions from Don Porter, NIST, 2003.  (not subject to US copyright)
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH return n 7.0 Tcl "Tcl Built-In Commands"
+.TH return n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-return \- Return from a procedure
+return \- Return from a procedure, or set return code of a script
 .SH SYNOPSIS
-\fBreturn \fR?\fB\-code \fIcode\fR? ?\fB\-errorinfo \fIinfo\fR? ?\fB\-errorcode\fI code\fR? ?\fIstring\fR?
+\fBreturn \fR?\fIresult\fR?
+.sp
+\fBreturn \fR?\fB\-code \fIcode\fR? ?\fIresult\fR?
+.sp
+\fBreturn \fR?\fIoption value \fR...? ?\fIresult\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
-Return immediately from the current procedure
-(or top-level command or \fBsource\fR command),
-with \fIstring\fR as the return value.  If \fIstring\fR is not specified then
-an empty string will be returned as result.
+In its simplest usage, the \fBreturn\fR command is used without options
+in the body of a procedure to immediately return control to the caller
+of the procedure.  If a \fIresult\fR argument is provided, its value
+becomes the result of the procedure passed back to the caller.  
+If \fIresult\fR is not specified then an empty string will be returned
+to the caller as the result of the procedure.
+.PP
+The \fBreturn\fR command serves a similar function within script
+files that are evaluated by the \fBsource\fR command.  When \fBsource\fR
+evaluates the contents of a file as a script, an invocation of
+the \fBreturn\fR command will cause script evaluation
+to immediately cease, and the value \fIresult\fR (or an empty string)
+will be returned as the result of the \fBsource\fR command.
 .SH "EXCEPTIONAL RETURN CODES"
 .PP
 In addition to the result of a procedure, the return
 code of a procedure may also be set by \fBreturn\fR
-through use of the \fB-code\fR option.
-In the usual case where the \fB\-code\fR option isn't
+through use of the \fB\-code\fR option.
+In the usual case where the \fB\-code\fR option is not
 specified the procedure will return normally.
 However, the \fB\-code\fR option may be used to generate an
 exceptional return from the procedure.
@@ -61,29 +74,135 @@ were the command \fBcontinue\fR.
 \fIValue\fR must be an integer;  it will be returned as the
 return code for the current procedure.
 .LP
-The \fB\-code\fR option is rarely used.
-It is provided so that procedures that implement
-new control structures can reflect exceptional conditions back to
-their callers.
-.PP
-Two additional options, \fB\-errorinfo\fR and \fB\-errorcode\fR,
-may be used to provide additional information during error
-returns.
-These options are ignored unless \fIcode\fR is \fBerror\fR.
-.PP
-The \fB\-errorinfo\fR option specifies an initial stack
-trace for the \fBerrorInfo\fR variable;  if it is not specified then
-the stack trace left in \fBerrorInfo\fR will include the call to
-the procedure and higher levels on the stack but it will not include
-any information about the context of the error within the procedure.
-Typically the \fIinfo\fR value is supplied from the value left
-in \fBerrorInfo\fR after a \fBcatch\fR command trapped an error within
-the procedure.
-.PP
-If the \fB\-errorcode\fR option is specified then \fIcode\fR provides
-a value for the \fBerrorCode\fR variable.
-If the option is not specified then \fBerrorCode\fR will
-default to \fBNONE\fR.
+When a procedure wants to signal that it has received invalid
+arguments from its caller, it may use \fBreturn -code error\fR
+with \fIresult\fR set to a suitable error message.  Otherwise
+usage of the \fBreturn -code\fR option is mostly limited to
+procedures that implement a new control structure.
+.PP
+The \fBreturn \-code\fR command acts similarly within script
+files that are evaluated by the \fBsource\fR command.  During the
+evaluation of the contents of a file as a script by \fBsource\fR,
+an invocation of the \fBreturn \-code \fIcode\fR command will cause
+the return code of \fBsource\fR to be \fIcode\fR.
+.SH "RETURN OPTIONS"
+.PP
+.VS 8.5
+In addition to a result and a return code, evaluation of a command
+in Tcl also produces a dictionary of return options.  In general
+usage, all \fIoption value\fR pairs given as arguments to \fBreturn\fR
+become entries in the return options dictionary, and any values at all
+are acceptable except as noted below.  The \fBcatch\fR command may be
+used to capture all of this information \(em the return code, the result,
+and the return options dictionary \(em that arise from evaluation of a
+script.
+.VE 8.5
+.PP
+As documented above, the \fB\-code\fR entry in the return options dictionary
+receives special treatment by Tcl.  There are other return options also
+recognized and treated specially by Tcl.  They are:
+.TP
+\fB\-errorcode \fIlist\fR
+The \fB\-errorcode\fR option receives special treatment only when the value
+of the \fB\-code\fR option is \fBTCL_ERROR\fR.  Then the \fIlist\fR value
+is meant to be additional information about the error,
+presented as a Tcl list for further processing by programs.
+If no \fB\-errorcode\fR option is provided to \fBreturn\fR when
+the \fB\-code error\fR option is provided, Tcl will set the value
+of the \fB\-errorcode\fR entry in the return options dictionary 
+to the default value of \fBNONE\fR.  The \fB\-errorcode\fR return
+option will also be stored in the global variable \fBerrorCode\fR.
+.TP
+\fB\-errorinfo \fIinfo\fR
+The \fB\-errorinfo\fR option receives special treatment only when the value
+of the \fB\-code\fR option is \fBTCL_ERROR\fR.  Then \fIinfo\fR is the initial
+stack trace, meant to provide to a human reader additional information
+about the context in which the error occurred.  The stack trace will
+also be stored in the global variable \fBerrorInfo\fR.  
+If no \fB\-errorinfo\fR option is provided to \fBreturn\fR when
+the \fB\-code error\fR option is provided, Tcl will provide its own
+initial stack trace value in the entry for \fB\-errorinfo\fR.  Tcl's
+initial stack trace will include only the call to the procedure, and
+stack unwinding will append information about higher stack levels, but
+there will be no information about the context of the error within
+the procedure.  Typically the \fIinfo\fR value is supplied from
+the value of \fB\-errorinfo\fR in a return options dictionary captured
+by the \fBcatch\fR command (or from the copy of that information
+stored in the global variable \fBerrorInfo\fR).
+.TP
+\fB\-level \fIlevel\fR
+.VS 8.5
+The \fB\-level\fR and \fB\-code\fR options work together to set the return
+code to be returned by one of the commands currently being evaluated.
+The \fIlevel\fR value must be a non-negative integer representing a number
+of levels on the call stack.  It defines the number of levels up the stack
+at which the return code of a command currently being evaluated should
+be \fIcode\fR.  If no \fB\-level\fR option is provided, the default value
+of \fIlevel\fR is 1, so that \fBreturn\fR sets the return code that the
+current procedure returns to its caller, 1 level up the call stack.  The
+mechanism by which these options work is described in more detail below.
+.VE 8.5
+.TP
+\fB\-options \fIoptions\fR
+.VS 8.5
+The value \fIoptions\fR must be a valid dictionary.  The entries of that
+dictionary are treated as additional \fIoption value\fR pairs for the
+\fBreturn\fR command.
+.VE 8.5
+.SH "RETURN CODE HANDLING MECHANISMS"
+.PP
+Return codes are used in Tcl to control program flow.  A Tcl script
+is a sequence of Tcl commands.  So long as each command evaluation
+returns a return code of \fBTCL_OK\fR, evaluation will continue to the next
+command in the script.  Any exceptional return code (non-\fBTCL_OK\fR)
+returned by a command evaluation causes the flow on to the next
+command to be interrupted.  Script evaluation ceases, and the
+exceptional return code from the command becomes the return code
+of the full script evaluation.  This is the mechanism by which
+errors during script evaluation cause an interruption and unwinding
+of the call stack.  It is also the mechanism by which commands
+like \fBbreak\fR, \fBcontinue\fR, and \fBreturn\fR cause script
+evaluation to terminate without evaluating all commands in sequence.
+.PP
+Some of Tcl's built-in commands evaluate scripts as part of their
+functioning.  These commands can make use of exceptional return
+codes to enable special features.  For example, the built-in
+Tcl commands that provide loops \(em such as \fBwhile\fR, \fBfor\fR,
+and \fBforeach\fR \(em evaluate a script that is the body of the
+loop.  If evaluation of the loop body returns the return code
+of \fBTCL_BREAK\fR or \fBTCL_CONTINUE\fR, the loop command can react in such
+a way as to give the \fBbreak\fR and \fBcontinue\fR commands
+their documented interpretation in loops.
+.PP
+.VS 8.5
+Procedure invocation also involves evaluation of a script, the body
+of the procedure.  Procedure invocation provides special treatment
+when evaluation of the procedure body returns the return code 
+\fBTCL_RETURN\fR.  In that circumstance, the \fB\-level\fR entry in the
+return options dictionary is decremented.  If after decrementing,
+the value of the \fB\-level\fR entry is 0, then the value of
+the \fB\-code\fR entry becomes the return code of the procedure.
+If after decrementing, the value of the \fB\-level\fR entry is
+greater than zero, then the return code of the procedure is
+\fBTCL_RETURN\fR.  If the procedure invocation occurred during the
+evaluation of the body of another procedure, the process will
+repeat itself up the call stack, decrementing the value of the
+\fB\-level\fR entry at each level, so that the \fIcode\fR will
+be the return code of the current command \fIlevel\fR levels
+up the call stack.  The \fBsource\fR command performs the
+same handling of the \fBTCL_RETURN\fR return code, which explains
+the similarity of \fBreturn\fR invocation during a \fBsource\fR
+to \fBreturn\fR invocation within a procedure.
+.PP
+The return code of the \fBreturn\fR command itself triggers this
+special handling by procedure invocation.  If \fBreturn\fR
+is provided the option \fB\-level 0\fR, then the return code
+of the \fBreturn\fR command itself will be the value \fIcode\fR
+of the \fB\-code\fR option (or \fBTCL_OK\fR by default).  Any other value
+for the \fB\-level\fR option (including the default value of 1)
+will cause the return code of the \fBreturn\fR command itself
+to be \fBTCL_RETURN\fR, triggering a return from the enclosing procedure.
+.VE 8.5
 .SH EXAMPLES
 First, a simple example of using \fBreturn\fR to return from a
 procedure, interrupting the procedure body.
@@ -107,9 +226,9 @@ to report invalid arguments.
 .CS
 proc factorial {n} {
    if {![string is integer $n] || ($n < 0)} {
-      \fBreturn\fR -code error \\
-            "expected non-negative integer,\\
-             but got \\"$n\\""
+      \fBreturn\fR -code error \e
+            "expected non-negative integer,\e
+             but got \e"$n\e""
    }
    if {$n < 2} {
       \fBreturn\fR 1
@@ -121,7 +240,7 @@ proc factorial {n} {
    }
    set product [expr {$n * $factor}]
    if {$product < 0} {
-      \fBreturn\fR -code error \\
+      \fBreturn\fR -code error \e
             "overflow computing factorial of $n"
    }
    \fBreturn\fR $product
@@ -134,9 +253,44 @@ proc myBreak {} {
    \fBreturn\fR -code break
 }
 .CE
-
+.PP
+.VS 8.5
+With the \fB\-level 0\fR option, \fBreturn\fR itself can serve
+as a replacement for \fBbreak\fR.
+.CS
+interp alias {} Break {} \fBreturn\fR -level 0 -code break
+.CE
+.PP
+An example of using \fBcatch\fR and \fBreturn -options\fR to
+re-raise a caught error:
+.CS
+proc doSomething {} {
+   set resource [allocate]
+   catch {
+      # Long script of operations
+      # that might raise an error
+   } result options
+   deallocate $resource
+   \fBreturn\fR -options $options $result
+}
+.CE
+.PP
+Finally an example of advanced use of the \fBreturn\fR options
+to create a procedure replacement for \fBreturn\fR itself:
+.CS
+proc myReturn {args} {
+   set result ""
+   if {[llength $args] % 2} {
+      set result [lindex $args end]
+      set args [lrange $args 0 end-1]
+   }
+   set options [dict merge {-level 1} $args]
+   dict incr options -level
+   \fBreturn\fR -options $options $result
+}
+.CE
+.VE 8.5
 .SH "SEE ALSO"
-break(n), catch(n), continue(n), error(n), proc(n), source(n), tclvars(n)
-
+break(n), catch(n), continue(n), dict(n), error(n), proc(n), source(n), tclvars(n)
 .SH KEYWORDS
 break, catch, continue, error, procedure, return
diff --git a/doc/safe.n b/doc/safe.n
index 6eabd79..590f2c6 100644
--- a/doc/safe.n
+++ b/doc/safe.n
@@ -9,7 +9,7 @@
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
-Safe\ Base \- A mechanism for creating and manipulating safe interpreters.
+Safe\ Base \- A mechanism for creating and manipulating safe interpreters
 .SH SYNOPSIS
 \fB::safe::interpCreate\fR ?\fIslave\fR? ?\fIoptions...\fR?
 .sp
@@ -24,14 +24,13 @@ Safe\ Base \- A mechanism for creating and manipulating safe interpreters.
 \fB::safe::interpFindInAccessPath\fR \fIslave\fR \fIdirectory\fR
 .sp
 \fB::safe::setLogCmd\fR ?\fIcmd arg...\fR?
-.SH OPTIONS
+.SS OPTIONS
 .PP
 ?\fB\-accessPath\fR \fIpathList\fR?
 ?\fB\-statics\fR \fIboolean\fR? ?\fB\-noStatics\fR?
 ?\fB\-nested\fR \fIboolean\fR? ?\fB\-nestedLoadOk\fR?
 ?\fB\-deleteHook\fR \fIscript\fR?
 .BE
-
 .SH DESCRIPTION
 Safe Tcl is a mechanism for executing untrusted Tcl scripts
 safely and for providing mediated access by such scripts to
@@ -61,15 +60,14 @@ Different levels of security can be selected by using the optional flags
 of the commands described below.
 .PP
 All commands provided in the master interpreter by the Safe Base reside in
-the \fBsafe\fR namespace:
-
+the \fBsafe\fR namespace.
 .SH COMMANDS
 The following commands are provided in the master interpreter:
 .TP
 \fB::safe::interpCreate\fR ?\fIslave\fR? ?\fIoptions...\fR?
 Creates a safe interpreter, installs the aliases described in the section
 \fBALIASES\fR and initializes the auto-loading and package mechanism as
-specified by the supplied \fBoptions\fR.
+specified by the supplied \fIoptions\fR.
 See the \fBOPTIONS\fR section below for a description of the
 optional arguments.
 If the \fIslave\fR argument is omitted, a name will be generated.
@@ -93,14 +91,17 @@ safe interpreter and change each and only the provided options.
 See the section on \fBOPTIONS\fR below for options description.
 Example of use:
 .RS
+.PP
 .CS
-# Create a new interp with the same configuration as "$i0" :
-set i1 [eval safe::interpCreate [safe::interpConfigure $i0]]
+# Create new interp with the same configuration as "$i0":
+set i1 [safe::interpCreate {*}[safe::interpConfigure $i0]]
+
 # Get the current deleteHook
 set dh [safe::interpConfigure $i0  \-del]
-# Change (only) the statics loading ok attribute of an interp
-# and its deleteHook (leaving the rest unchanged) :
-safe::interpConfigure $i0  \-delete {foo bar} \-statics 0 ;
+
+# Change (only) the statics loading ok attribute of an
+# interp and its deleteHook (leaving the rest unchanged):
+safe::interpConfigure $i0  \-delete {foo bar} \-statics 0
 .CE
 .RE
 .TP
@@ -117,8 +118,10 @@ This command finds and returns the token for the real directory
 It generates an error if the directory is not found.
 Example of use:
 .RS
+.PP
 .CS
-$slave eval [list set tk_library [::safe::interpFindInAccessPath $name $tk_library]]
+$slave eval [list set tk_library \e
+      [::safe::interpFindInAccessPath $name $tk_library]]
 .CE
 .RE
 .TP
@@ -130,8 +133,10 @@ If the directory is already in the virtual path, it only returns the token
 without adding the directory to the virtual path again.
 Example of use:
 .RS
+.PP
 .CS
-$slave eval [list set tk_library [::safe::interpAddToAccessPath $name $tk_library]]
+$slave eval [list set tk_library \e
+      [::safe::interpAddToAccessPath $name $tk_library]]
 .CE
 .RE
 .TP
@@ -150,14 +155,18 @@ This prevents a safe interpreter from seeing messages about failures
 and other events that might contain sensitive information such as real
 directory names.
 .RS
+.PP
 Example of use:
+.PP
 .CS
 ::safe::setLogCmd puts stderr
 .CE
+.PP
 Below is the output of a sample session in which a safe interpreter
 attempted to source a file not found in its virtual access path.
 Note that the safe interpreter only received an error message saying that
 the file was not found:
+.PP
 .CS
 NOTICE for slave interp10 : Created
 NOTICE for slave interp10 : Setting accessPath=(/foo/bar) staticsok=1 nestedok=0 deletehook=()
@@ -165,8 +174,7 @@ NOTICE for slave interp10 : auto_path in interp10 has been set to {$p(:0:)}
 ERROR for slave interp10 : /foo/bar/init.tcl: no such file or directory
 .CE
 .RE
-
-.SH OPTIONS
+.SS OPTIONS
 The following options are common to 
 \fB::safe::interpCreate\fR, \fB::safe::interpInit\fR, 
 and \fB::safe::interpConfigure\fR.
@@ -190,7 +198,7 @@ The default value is \fBtrue\fR :
 safe interpreters are allowed to load statically linked packages.
 .TP
 \fB\-noStatics\fR
-This option is a convenience shortcut for \fB-statics false\fR and
+This option is a convenience shortcut for \fB\-statics false\fR and
 thus specifies that the safe interpreter will not be allowed
 to load statically linked packages.
 .TP
@@ -202,7 +210,7 @@ safe interpreters are not allowed to load packages into
 their own sub-interpreters.
 .TP
 \fB\-nestedLoadOk\fR
-This option is a convenience shortcut for \fB-nested true\fR and
+This option is a convenience shortcut for \fB\-nested true\fR and
 thus specifies the safe interpreter will be allowed
 to load packages into its own sub-interpreters.
 .TP 
@@ -252,7 +260,6 @@ the system encoding, but allows all other subcommands including
 \fBexit\fR
 The calling interpreter is deleted and its computation is stopped, but the
 Tcl process in which this interpreter exists is not terminated.
-
 .SH SECURITY
 The Safe Base does not attempt to completely prevent annoyance and
 denial of service attacks. These forms of attack prevent the
@@ -288,8 +295,7 @@ for the \fBsource\fR and \fBload\fR aliases provided to the slave
 are path in the form of 
 \fB[file join \fR\fItoken filename\fR\fB]\fR (i.e. when using the
 native file path formats: \fItoken\fR\fB/\fR\fIfilename\fR
-on Unix, \fItoken\fR\fB\\\fIfilename\fR on Windows, 
-and \fItoken\fR\fB:\fR\fIfilename\fR on the Mac),
+on Unix and \fItoken\fR\fB\e\fIfilename\fR on Windows),
 where \fItoken\fR is representing one of the directories 
 of the \fIaccessPath\fR list and \fIfilename\fR is
 one file in that directory (no sub directories access are allowed).
@@ -305,8 +311,12 @@ To further prevent potential information leakage from sensitive files that
 are accidentally included in the set of files that can be sourced by a safe
 interpreter, the \fBsource\fR alias restricts access to files
 meeting the following constraints: the file name must
-fourteen characters or shorter, must not contain more than one dot ("\fB.\fR"),
-must end up with the extension \fB.tcl\fR or be called \fBtclIndex\fR.
+fourteen characters or shorter, must not contain more than one dot
+.PQ \fB.\fR "" ,
+must end up with the extension
+.PQ \fB.tcl\fR
+or be called
+.PQ \fBtclIndex\fR .
 .PP
 Each element of the initial access path
 list will be assigned a token that will be set in
@@ -316,9 +326,9 @@ the \fBtcl_library\fR for that slave.
 If the access path argument is not given or is the empty list, 
 the default behavior is to let the slave access the same packages
 as the master has access to (Or to be more precise: 
-only packages written in Tcl (which by definition can't be dangerous
+only packages written in Tcl (which by definition cannot be dangerous
 as they run in the slave interpreter) and C extensions that
-provides a Safe_Init entry point). For that purpose, the master's 
+provides a _SafeInit entry point). For that purpose, the master's 
 \fBauto_path\fR will be used to construct the slave access path. 
 In order that the slave successfully loads the Tcl library files
 (which includes the auto-loading mechanism itself) the \fBtcl_library\fR will be
@@ -339,10 +349,8 @@ When the \fIaccessPath\fR is changed after the first creation or
 initialization (i.e. through \fBinterpConfigure -accessPath \fR\fIlist\fR),
 an \fBauto_reset\fR is automatically evaluated in the safe interpreter
 to synchronize its \fBauto_index\fR with the new token list.
-
 .SH "SEE ALSO"
 interp(n), library(n), load(n), package(n), source(n), unknown(n)
- 
 .SH KEYWORDS
 alias, auto\-loading, auto_mkindex, load, master interpreter, safe
 interpreter, slave interpreter, source
diff --git a/doc/scan.n b/doc/scan.n
index 320280a..ca096da 100644
--- a/doc/scan.n
+++ b/doc/scan.n
@@ -15,17 +15,17 @@ scan \- Parse string using conversion specifiers in the style of sscanf
 .SH SYNOPSIS
 \fBscan \fIstring format \fR?\fIvarName varName ...\fR?
 .BE
-
 .SH INTRODUCTION
 .PP
-This command parses fields from an input string in the same fashion as the
-ANSI C \fBsscanf\fR procedure and returns a count of the number of
+This command parses substrings from an input string in a fashion similar
+to the ANSI C \fBsscanf\fR procedure and returns a count of the number of
 conversions performed, or -1 if the end of the input string is reached
 before any conversions have been performed.  \fIString\fR gives the input
 to be parsed and \fIformat\fR indicates how to parse it, using \fB%\fR
 conversion specifiers as in \fBsscanf\fR.  Each \fIvarName\fR gives the
-name of a variable; when a field is scanned from \fIstring\fR the result is
-converted back into a string and assigned to the corresponding variable.
+name of a variable; when a substring is scanned from \fIstring\fR that
+matches a conversion specifier, the substring is assigned to the
+corresponding variable.
 If no \fIvarName\fR variables are specified, then \fBscan\fR works in an
 inline manner, returning the data that would otherwise be stored in the
 variables as a list.  In the inline case, an empty string is returned when
@@ -37,29 +37,28 @@ performed.
 If the next character in \fIformat\fR is a blank or tab then it
 matches any number of white space characters in \fIstring\fR (including
 zero).
-Otherwise, if it isn't a \fB%\fR character then it 
+Otherwise, if it is not a \fB%\fR character then it 
 must match the next character of \fIstring\fR.
 When a \fB%\fR is encountered in \fIformat\fR, it indicates
 the start of a conversion specifier.
-.VS 8.4
 A conversion specifier contains up to four fields after the \fB%\fR:
-a \fB*\fR, which indicates that the converted value is to be discarded 
-instead of assigned to a variable; a XPG3 position specifier; a number
-indicating a maximum field width; a field size modifier; and a
+a XPG3 position specifier (or a \fB*\fR to indicate the converted
+value is to be discarded instead of assigned to any variable); a number
+indicating a maximum substring width; a size modifier; and a
 conversion character.
-.VE 8.4
 All of these fields are optional except for the conversion character.
 The fields that are present must appear in the order given above.
 .PP
 When \fBscan\fR finds a conversion specifier in \fIformat\fR, it
 first skips any white-space characters in \fIstring\fR (unless the
-specifier is \fB[\fR or \fBc\fR).
+conversion character is \fB[\fR or \fBc\fR).
 Then it converts the next input characters according to the 
 conversion specifier and stores the result in the variable given
 by the next argument to \fBscan\fR.
 .PP
 If the \fB%\fR is followed by a decimal number and a \fB$\fR, as in
-``\fB%2$d\fR'', then the variable to use is not taken from the next
+.QW \fB%2$d\fR ,
+then the variable to use is not taken from the next
 sequential argument.  Instead, it is taken from the argument indicated
 by the number, where 1 corresponds to the first \fIvarName\fR.  If
 there are any positional specifiers in \fIformat\fR then all of the
@@ -68,86 +67,75 @@ list must correspond to exactly one conversion specifier or an error
 is generated, or in the inline case, any position can be specified
 at most once and the empty positions will be filled in with empty strings.
 .PP
+.VS 8.5
+The size modifier field is used only when scanning a substring into
+one of Tcl's integer values.  The size modifier field dictates the
+integer range acceptable to be stored in a variable, or, for the inline
+case, in a position in the result list.
+The syntactically valid values for the size modifier are \fBh\fR, \fBL\fR,
+\fBl\fR, and \fBll\fR.  The \fBh\fR size modifier value is equivalent
+to the absence of a size modifier in the the conversion specifier.
+Either one indicates the integer range to be stored is limited to
+the same range produced by the \fBint()\fR function of the \fBexpr\fR
+command.  The \fBL\fR size modifier is equivalent to the \fBl\fR size
+modifier. Either one indicates the integer range to be stored is
+limited to the same range produced by the \fBwide()\fR function of
+the \fBexpr\fR command.  The \fBll\fR size modifier indicates that
+the integer range to be stored is unlimited.
+.VE 8.5
+.PP
 The following conversion characters are supported:
 .TP 10
 \fBd\fR
-The input field must be a decimal integer.
-It is read in and the value is stored in the variable as a decimal string.
-.VS 8.4
-If the \fBl\fR or \fBL\fR field size modifier is given, the scanned
-value will have an internal representation that is at least 64-bits in
-size.
-.VE 8.4
+The input substring must be a decimal integer.
+It is read in and the integer value is stored in the variable,
+truncated as required by the size modifier value.
 .TP 10
 \fBo\fR
-The input field must be an octal integer. It is read in and the 
-value is stored in the variable as a decimal string.
-.VS 8.4
-If the \fBl\fR or \fBL\fR field size modifier is given, the scanned
-value will have an internal representation that is at least 64-bits in
-size.
-If the value exceeds MAX_INT (017777777777 on platforms using 32-bit
-integers when the \fBl\fR and \fBL\fR modifiers are not given), it
-will be truncated to a signed integer.  Hence, 037777777777 will
-appear as -1 on a 32-bit machine by default.
-.VE 8.4
+The input substring must be an octal integer. It is read in and the 
+integer value is stored in the variable,
+truncated as required by the size modifier value.
 .TP 10
 \fBx\fR
-The input field must be a hexadecimal integer. It is read in 
-and the value is stored in the variable as a decimal string.
-.VS 8.4
-If the \fBl\fR or \fBL\fR field size modifier is given, the scanned
-value will have an internal representation that is at least 64-bits in
-size.
-If the value exceeds MAX_INT (0x7FFFFFFF on platforms using 32-bit
-integers when the \fBl\fR and \fBL\fR modifiers are not given), it
-will be truncated to a signed integer.  Hence, 0xFFFFFFFF will appear
-as -1 on a 32-bit machine.
-.VE 8.4
+The input substring must be a hexadecimal integer.
+It is read in and the integer value is stored in the variable,
+truncated as required by the size modifier value.
 .TP 10
 \fBu\fR
-The input field must be a decimal integer.  The value is stored in the
-variable as an unsigned decimal integer string.
-.VS 8.4
-If the \fBl\fR or \fBL\fR field size modifier is given, the scanned
-value will have an internal representation that is at least 64-bits in
-size.
-.VE 8.4
+The input substring must be a decimal integer.
+The integer value is truncated as required by the size modifier
+value, and the corresponding unsigned value for that truncated
+range is computed and stored in the variable as a decimal string.
+The conversion makes no sense without reference to a truncation range,
+so the size modifier \fBll\fR is not permitted in combination
+with conversion character \fBu\fR.
 .TP 10
 \fBi\fR 
-The input field must be an integer.  The base (i.e. decimal, octal, or
-hexadecimal) is determined in the same fashion as described in
-\fBexpr\fR.  The value is stored in the variable as a decimal string.
-.VS 8.4
-If the \fBl\fR or \fBL\fR field size modifier is given, the scanned
-value will have an internal representation that is at least 64-bits in
-size.
-.VE 8.4
+The input substring must be an integer.  The base (i.e. decimal, binary,
+octal, or hexadecimal) is determined in the same fashion as described in
+\fBexpr\fR.  The integer value is stored in the variable,
+truncated as required by the size modifier value.
 .TP 10
 \fBc\fR
-A single character is read in and its binary value is stored in 
-the variable as a decimal string.
+A single character is read in and its Unicode value is stored in 
+the variable as an integer value.
 Initial white space is not skipped in this case, so the input
-field may be a white-space character.
-This conversion is different from the ANSI standard in that the
-input field always consists of a single character and no field
-width may be specified.
+substring may be a white-space character.
 .TP 10
 \fBs\fR
-The input field consists of all the characters up to the next 
+The input substring consists of all the characters up to the next 
 white-space character; the characters are copied to the variable.
 .TP 10
 \fBe\fR or \fBf\fR or \fBg\fR
-The input field must be a floating-point number consisting 
+The input substring must be a floating-point number consisting 
 of an optional sign, a string of decimal digits possibly
 containing a decimal point, and an optional exponent consisting 
 of an \fBe\fR or \fBE\fR followed by an optional sign and a string of 
 decimal digits.
-It is read in and stored in the variable as a floating-point string.
+It is read in and stored in the variable as a floating-point value.
 .TP 10
 \fB[\fIchars\fB]\fR
-The input field consists of any number of characters in 
-\fIchars\fR.
+The input substring consists of one or more characters in \fIchars\fR.
 The matching string is stored in the variable.
 If the first character between the brackets is a \fB]\fR then
 it is treated as part of \fIchars\fR rather than the closing
@@ -159,8 +147,7 @@ If the first or last character between the brackets is a \fB\-\fR, then
 it is treated as part of \fIchars\fR rather than indicating a range.
 .TP 10
 \fB[^\fIchars\fB]\fR
-The input field consists of any number of characters not in 
-\fIchars\fR.
+The input substring consists of one or more characters not in \fIchars\fR.
 The matching string is stored in the variable.
 If the character immediately following the \fB^\fR is a \fB]\fR then it is 
 treated as part of the set rather than the closing bracket for 
@@ -170,7 +157,7 @@ contains a sequence of the form \fIa\fB\-\fIb\fR then any
 character between \fIa\fR and \fIb\fR (inclusive) will be excluded
 from the set.
 If the first or last character between the brackets is a \fB\-\fR, then
-it is treated as part of \fIchars\fR rather than indicating a range.
+it is treated as part of \fIchars\fR rather than indicating a range value.
 .TP 10
 \fBn\fR
 No input is consumed from the input string.  Instead, the total number
@@ -180,8 +167,8 @@ The number of characters read from the input for a conversion is the
 largest number that makes sense for that particular conversion (e.g.
 as many decimal digits as possible for \fB%d\fR, as 
 many octal digits as possible for \fB%o\fR, and so on).
-The input field for a given conversion terminates either when a
-white-space character is encountered or when the maximum field 
+The input substring for a given conversion terminates either when a
+white-space character is encountered or when the maximum substring 
 width has been reached, whichever comes first.
 If a \fB*\fR is present in the conversion specifier 
 then no variable is assigned and the next scan argument is not consumed.
@@ -190,24 +177,29 @@ then no variable is assigned and the next scan argument is not consumed.
 The behavior of the \fBscan\fR command is the same as the behavior of
 the ANSI C \fBsscanf\fR procedure except for the following differences:
 .IP [1]
-\fB%p\fR conversion specifier is not currently supported.
+\fB%p\fR conversion specifier is not supported.
 .IP [2]
 For \fB%c\fR conversions a single character value is
 converted to a decimal string, which is then assigned to the
 corresponding \fIvarName\fR;
-no field width may be specified for this conversion.
+no substring width may be specified for this conversion.
 .IP [3]
-.VS 8.4
 The \fBh\fR modifier is always ignored and the \fBl\fR and \fBL\fR
 modifiers are ignored when converting real values (i.e. type
-\fBdouble\fR is used for the internal representation).
-.VE 8.4
+\fBdouble\fR is used for the internal representation).  The \fBll\fR
+modifier has no \fBsscanf\fR counterpart.
 .IP [4]
 If the end of the input string is reached before any conversions have been
 performed and no variables are given, an empty string is returned.
 .SH EXAMPLES
+Convert a UNICODE character to its numeric value:
+.CS
+set char "x"
+set value [\fBscan\fR $char %c]
+.CE
+.PP
 Parse a simple color specification of the form \fI#RRGGBB\fR using
-hexadecimal conversions with field sizes:
+hexadecimal conversions with substring sizes:
 .CS
 set string "#08D03F"
 \fBscan\fR $string "#%2x%2x%2x" r g b
@@ -245,7 +237,7 @@ looking for the terminating character explicitly:
 set string "(5.2,-4e-2)"
 # Note that the spaces before the literal parts of
 # the scan pattern are significant, and that ")" is
-# the Unicode character \\u0029
+# the Unicode character \eu0029
 if {
    [\fBscan\fR $string " (%f ,%f %c" x y last] != 3
    || $last != 0x0029
@@ -254,9 +246,22 @@ if {
 }
 puts "X=$x, Y=$y"
 .CE
-
+.PP
+.VS 8.5
+An interactive session demonstrating the truncation of integer
+values determined by size modifiers:
+.CS
+% set tcl_platform(wordSize)
+4
+% scan 20000000000000000000 %d
+2147483647
+% scan 20000000000000000000 %ld
+9223372036854775807
+% scan 20000000000000000000 %lld
+20000000000000000000
+.CE
+.VE 8.5
 .SH "SEE ALSO"
 format(n), sscanf(3)
-
 .SH KEYWORDS
 conversion specifier, parse, scan
diff --git a/doc/seek.n b/doc/seek.n
index bbc586f..d4ce9b7 100644
--- a/doc/seek.n
+++ b/doc/seek.n
@@ -19,12 +19,10 @@ seek \- Change the access position for an open channel
 .PP
 Changes the current access position for \fIchannelId\fR.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as a
 Tcl standard channel (\fBstdin\fR, \fBstdout\fR, or \fBstderr\fR),
 the return value from an invocation of \fBopen\fR or \fBsocket\fR, or
 the result of a channel creation command provided by a Tcl extension.
-.VE
 .PP
 The \fIoffset\fR and \fIorigin\fR
 arguments specify the position at which the next read or write will occur
@@ -55,11 +53,9 @@ This command returns an empty string.
 An error occurs if this command is applied to channels whose underlying
 file or device does not support seeking.
 .PP
-.VS 8.1
 Note that \fIoffset\fR values are byte offsets, not character
 offsets.  Both \fBseek\fR and \fBtell\fR operate in terms of bytes,
 not characters, unlike \fBread\fR.
-.VE 8.1
 .SH EXAMPLES
 Read a file twice:
 .CS
diff --git a/doc/set.n b/doc/set.n
index 3233475..fb8dfac 100644
--- a/doc/set.n
+++ b/doc/set.n
@@ -14,13 +14,12 @@ set \- Read and write variables
 .SH SYNOPSIS
 \fBset \fIvarName \fR?\fIvalue\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 Returns the value of variable \fIvarName\fR.
 If \fIvalue\fR is specified, then set
 the value of \fIvarName\fR to \fIvalue\fR, creating a new variable
-if one doesn't already exist, and return its value.
+if one does not already exist, and return its value.
 If \fIvarName\fR contains an open parenthesis and ends with a
 close parenthesis, then it refers to an array element:  the characters
 before the first open parenthesis are the name of the array,
@@ -42,7 +41,7 @@ unless \fIvarName\fR was declared to resolve differently through one of the
 .SH EXAMPLES
 Store a random number in the variable \fIr\fR:
 .CS
-\fBset\fR r [expr rand()]
+\fBset\fR r [expr {rand()}]
 .CE
 .PP
 Store a short message in an array element:
@@ -65,9 +64,7 @@ practice instead of doing double-dereferencing):
 \fBset\fR vbl in[expr {rand() >= 0.5}]
 \fBset\fR out [\fBset\fR $vbl]
 .CE
-
 .SH "SEE ALSO"
 expr(n), global(n), namespace(n), proc(n), trace(n), unset(n), upvar(n), variable(n)
-
 .SH KEYWORDS
 read, write, variable
diff --git a/doc/socket.n b/doc/socket.n
index a4dda4a..c020839 100644
--- a/doc/socket.n
+++ b/doc/socket.n
@@ -75,7 +75,16 @@ connection attempt succeeds or fails, if the socket is in blocking mode, the
 operation will wait until the connection is completed or fails. If the
 socket is in nonblocking mode and a \fBgets\fR or \fBflush\fR is done on
 the socket before the connection attempt succeeds or fails, the operation
-returns immediately and \fBfblocked\fR on the socket returns 1.
+returns immediately and \fBfblocked\fR on the socket returns 1. Synchronous
+client sockets may be switched (after they have connected) to operating in
+asynchronous mode using:
+.RS
+.CS
+\fBfconfigure \fIchan \fB\-blocking 0\fR
+.CE
+.PP
+See the \fBfconfigure\fR command for more details.
+.RE
 .SH "SERVER SOCKETS"
 .PP
 If the \fB\-server\fR option is specified then the new socket
@@ -91,7 +100,7 @@ with three additional arguments: the name of the new channel, the
 address, in network address notation, of the client's host, and
 the client's port number.
 .PP
-The following additional option may also be specified before \fIhost\fR:
+The following additional option may also be specified before \fIport\fR:
 .TP
 \fB\-myaddr\fI addr\fR
 \fIAddr\fR gives the domain-style name or numerical IP address of
@@ -108,7 +117,7 @@ channel shuts down the server so that no new connections will be
 accepted;  however, existing connections will be unaffected.
 .PP
 Server sockets depend on the Tcl event mechanism to find out when
-new connections are opened.  If the application doesn't enter the
+new connections are opened.  If the application does not enter the
 event loop, for example by invoking the \fBvwait\fR command or
 calling the C procedure \fBTcl_DoOneEvent\fR, then no connections
 will be accepted.
@@ -127,6 +136,9 @@ This option gets the current error status of the given socket.  This
 is useful when you need to determine if an asynchronous connect
 operation succeeded.  If there was an error, the error message is
 returned.  If there was no error, an empty string is returned.
+
+Note that the error status is reset by the read operation; this mimics
+the underlying getsockopt(SO_ERROR) call.
 .TP
 \fB\-sockname\fR
 This option returns a list of three elements, the address, the host name
diff --git a/doc/source.n b/doc/source.n
index c60c86e..69d383e 100644
--- a/doc/source.n
+++ b/doc/source.n
@@ -15,11 +15,10 @@ source \- Evaluate a file or resource as a Tcl script
 .SH SYNOPSIS
 \fBsource \fIfileName\fR
 .sp
-\fBsource\fR \fB\-rsrc \fIresourceName \fR?\fIfileName\fR?
-.sp
-\fBsource\fR \fB\-rsrcid \fIresourceId \fR?\fIfileName\fR?
+.VS 8.5
+\fBsource\fR \fB\-encoding \fIencodingName fileName\fR
+.VE 8.5
 .BE
-
 .SH DESCRIPTION
 .PP
 This command takes the contents of the specified file or resource
@@ -31,15 +30,26 @@ If a \fBreturn\fR command is invoked from within the script then the
 remainder of the file will be skipped and the \fBsource\fR command
 will return normally with the result from the \fBreturn\fR command.
 .PP
-.VS 8.4
-The end-of-file character for files is '\\32' (^Z) for all platforms.
+The end-of-file character for files is
+.QW \e32
+(^Z) for all platforms.
 The source command will read files up to this character.  This
 restriction does not exist for the \fBread\fR or \fBgets\fR commands,
 allowing for files containing code and data segments (scripted documents).
-If you require a ``^Z'' in code for string comparison, you can use
-``\\032'' or ``\\u001a'', which will be safely substituted by the Tcl
-interpreter into ``^Z''.
-.VE 8.4
+If you require a
+.QW ^Z
+in code for string comparison, you can use
+.QW \e032
+or
+.QW \eu001a ,
+which will be safely substituted by the Tcl interpreter into
+.QW ^Z .
+.PP
+.VS 8.5
+The \fB\-encoding\fR option is used to specify the encoding of
+the data stored in \fIfileName\fR.  When the \fB\-encoding\fR option
+is omitted, the system encoding is assumed.
+.VE 8.5
 .SH EXAMPLE
 Run the script in the file \fBfoo.tcl\fR and then the script in the
 file \fBbar.tcl\fR:
@@ -53,9 +63,7 @@ foreach scriptFile {foo.tcl bar.tcl} {
    \fBsource\fR $scriptFile
 }
 .CE
-
 .SH "SEE ALSO"
-file(n), cd(n), info(n)
-
+file(n), cd(n), encoding(n), info(n)
 .SH KEYWORDS
 file, script
diff --git a/doc/split.n b/doc/split.n
index 11e4013..c289be0 100644
--- a/doc/split.n
+++ b/doc/split.n
@@ -32,7 +32,7 @@ If \fIsplitChars\fR is an empty string then each character of
 Divide up a USENET group name into its hierarchical components:
 .CS
 \fBsplit\fR "comp.lang.tcl.announce" .
-     \fI=> comp lang tcl announce\fR
+      \fI\(-> comp lang tcl announce\fR
 .CE
 .PP
 See how the \fBsplit\fR command splits on \fIevery\fR character in
@@ -40,21 +40,21 @@ See how the \fBsplit\fR command splits on \fIevery\fR character in
 careful:
 .CS
 \fBsplit\fR "alpha beta gamma" "temp"
-     \fI=> al {ha b} {} {a ga} {} a\fR
+      \fI\(-> al {ha b} {} {a ga} {} a\fR
 .CE
 .PP
 Extract the list words from a string that is not a well-formed list:
 .CS
 \fBsplit\fR "Example with {unbalanced brace character"
-     \fI=> Example with \\{unbalanced brace character\fR
+      \fI\(-> Example with \e{unbalanced brace character\fR
 .CE
 .PP
 Split a string into its constituent characters
 .CS
 \fBsplit\fR "Hello world" {}
-     \fI=> H e l l o { } w o r l d\fR
+      \fI\(-> H e l l o { } w o r l d\fR
 .CE
-.SH "PARSING RECORD-ORIENTED FILES"
+.SS "PARSING RECORD-ORIENTED FILES"
 Parse a Unix /etc/passwd file, which consists of one entry per line,
 with each line consisting of a colon-separated list of fields:
 .CS
@@ -64,7 +64,7 @@ set content [read $fid]
 close $fid
 
 ## Split into records on newlines
-set records [\fBsplit\fR $content "\\n"]
+set records [\fBsplit\fR $content "\en"]
 
 ## Iterate over the records
 foreach rec $records {
@@ -73,7 +73,7 @@ foreach rec $records {
    set fields [\fBsplit\fR $rec ":"]
 
    ## Assign fields to variables and print some out...
-   lassign $fields \\
+   lassign $fields \e
          userName password uid grp longName homeDir shell
    puts "$longName uses [file tail $shell] for a login shell"
 }
diff --git a/doc/string.n b/doc/string.n
index 2f9d2e7..e74b8a2 100644
--- a/doc/string.n
+++ b/doc/string.n
@@ -1,14 +1,14 @@
-'\"
-'\" Copyright (c) 1993 The Regents of the University of California.
-'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\" 
+.\"
+.\" Copyright (c) 1993 The Regents of the University of California.
+.\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
+.\"
+.\" See the file "license.terms" for information on usage and redistribution
+.\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+.\" 
 .so man.macros
 .TH string n 8.1 Tcl "Tcl Built-In Commands"
 .BS
-'\" Note:  do not modify the .SH NAME line immediately below!
+.\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 string \- Manipulate strings
 .SH SYNOPSIS
@@ -29,7 +29,7 @@ first \fIlength\fR characters are used in the comparison.  If
 \fB\-length\fR is negative, it is ignored.  If \fB\-nocase\fR is
 specified, then the strings are compared in a case-insensitive manner.
 .TP
-\fBstring equal\fR ?\fB\-nocase\fR? ?\fB-length int\fR? \fIstring1 string2\fR
+\fBstring equal\fR ?\fB\-nocase\fR? ?\fB\-length int\fR? \fIstring1 string2\fR
 Perform a character-by-character comparison of strings \fIstring1\fR
 and \fIstring2\fR.  Returns 1 if \fIstring1\fR and \fIstring2\fR are
 identical, or 0 when not.  If \fB\-length\fR is specified, then only
@@ -60,18 +60,56 @@ will return \fB\-1\fR.
 Returns the \fIcharIndex\fR'th character of the \fIstring\fR argument.
 A \fIcharIndex\fR of 0 corresponds to the first character of the
 string.  \fIcharIndex\fR may be specified as follows:
+.VS 8.5
 .RS
 .IP \fIinteger\fR 10
-The char specified at this integral index.
+For any index value that passes \fBstring is integer -strict\fR,
+the char specified at this integral index
+(e.g. \fB2\fR would refer to the
+.QW c
+in
+.QW abcd ).
 .IP \fBend\fR 10
-The last char of the string.
-.IP \fBend\-\fIinteger\fR 10
-The last char of the string minus the specified integer offset
-(e.g. \fBend\-1\fR would refer to the "c" in "abcd").
+The last char of the string
+(e.g. \fBend\fR would refer to the
+.QW d
+in
+.QW abcd ).
+.IP \fBend\fR\-\fIN\fR 10
+The last char of the string minus the specified integer offset \fIN\fR
+(e.g. \fBend\fR\-1 would refer to the
+.QW c
+in
+.QW abcd ).
+.IP \fBend\fR+\fIN\fR 10
+The last char of the string plus the specified integer offset \fIN\fR
+(e.g. \fBend\fR+\-1 would refer to the
+.QW c
+in
+.QW abcd ).
+.IP \fIM\fR+\fIN\fR 10
+The char specified at the integral index that is the sum of 
+integer values \fIM\fR and \fIN\fR
+(e.g. \fB1+1\fR would refer to the
+.QW c
+in
+.QW abcd ).
+.IP \fIM\fR\-\fIN\fR 10
+The char specified at the integral index that is the difference of 
+integer values \fIM\fR and \fIN\fR
+(e.g. \fB2\-1\fR would refer to the
+.QW b
+in
+.QW abcd ).
+.PP
+In the specifications above, the integer value \fIM\fR contains no
+trailing whitespace and the integer value \fIN\fR contains no
+leading whitespace.
 .PP
 If \fIcharIndex\fR is less than 0 or greater than or equal to the
 length of the string then this command returns an empty string.
 .RE
+.VE
 .TP
 \fBstring is \fIclass\fR ?\fB\-strict\fR? ?\fB\-failindex \fIvarname\fR? \fIstring\fR
 Returns 1 if \fIstring\fR is a valid member of the specified character
@@ -88,7 +126,7 @@ Any Unicode alphabet or digit character.
 .IP \fBalpha\fR 12
 Any Unicode alphabet character.
 .IP \fBascii\fR 12
-Any character with a value less than \\u0080 (those that are in the
+Any character with a value less than \eu0080 (those that are in the
 7\-bit ascii range).
 .IP \fBboolean\fR 12
 Any of the forms allowed to \fBTcl_GetBoolean\fR.
@@ -107,9 +145,15 @@ false.
 .IP \fBgraph\fR 12
 Any Unicode printing character, except space.
 .IP \fBinteger\fR 12
-Any of the valid forms for an ordinary integer in Tcl, with optional
-surrounding whitespace.  In case of under/overflow in the value, 0 is
-returned and the \fIvarname\fR will contain \-1.
+Any of the valid string formats for a 32-bit integer value in Tcl,
+with optional surrounding whitespace.  In case of under/overflow in
+the value, 0 is returned and the \fIvarname\fR will contain \-1.
+.IP \fBlist\fR 12
+Any proper list structure, with optional surrounding whitespace. In
+case of improper list structure, 0 is returned and the \fIvarname\fR
+will contain the index of the
+.QW element
+where the list parsing fails, or \-1 if this cannot be determined.
 .IP \fBlower\fR 12
 Any Unicode lower case alphabet character.
 .IP \fBprint\fR 12
@@ -123,6 +167,12 @@ Any of the forms allowed to \fBTcl_GetBoolean\fR where the value is
 true.
 .IP \fBupper\fR 12
 Any upper case alphabet character in the Unicode character set.
+.VS 8.5
+.IP \fBwideinteger\fR 12
+Any of the valid forms for a wide integer in Tcl, with optional
+surrounding whitespace.  In case of under/overflow in the value, 0 is
+returned and the \fIvarname\fR will contain \-1.
+.VE 8.5
 .IP \fBwordchar\fR 12
 Any Unicode word character.  That is any alphanumeric character, and
 any Unicode connector punctuation characters (e.g. underscore).
@@ -203,10 +253,16 @@ Matches any character in the set given by \fIchars\fR.  If a sequence
 of the form \fIx\fB\-\fIy\fR appears in \fIchars\fR, then any
 character between \fIx\fR and \fIy\fR, inclusive, will match.  When
 used with \fB\-nocase\fR, the end points of the range are converted to
-lower case first.  Whereas {[A\-z]} matches '_' when matching
-case-sensitively ('_' falls between the 'Z' and 'a'), with
-\fB\-nocase\fR this is considered like {[A\-Za\-z]} (and probably what
-was meant in the first place).
+lower case first.  Whereas {[A\-z]} matches
+.QW _
+when matching case-sensitively (since
+.QW _
+falls between the
+.QW Z
+and
+.QW a ),
+with \fB\-nocase\fR this is considered like {[A\-Za\-z]} (and
+probably what was meant in the first place).
 .IP \fB\e\fIx\fR 10
 Matches the single character \fIx\fR.  This provides a way of avoiding
 the special interpretation of the characters \fB*?[]\e\fR in
@@ -239,6 +295,12 @@ and if \fIlast\fR is greater than or equal to the length of the string
 then it is treated as if it were \fBend\fR.  If \fIfirst\fR is greater
 than \fIlast\fR or the length of the initial string, or \fIlast\fR is
 less than 0, then the initial string is returned untouched.
+.VS 8.5
+.TP
+\fBstring reverse \fIstring\fR
+Returns a string that is the same length as \fIstring\fR but with its
+characters in the reverse order.
+.VE 8.5
 .TP
 \fBstring tolower \fIstring\fR ?\fIfirst\fR? ?\fIlast\fR?
 Returns a value equal to \fIstring\fR except that all upper (or title)
@@ -330,4 +392,9 @@ if {$length == 0} {
 expr(n), list(n)
 
 .SH KEYWORDS
-case conversion, compare, index, match, pattern, string, word, equal, ctype
+case conversion, compare, index, match, pattern, string, word, equal,
+ctype, character, reverse
+
+.\" Local Variables:
+.\" mode: nroff
+.\" End:
diff --git a/doc/subst.n b/doc/subst.n
index b161de6..5a162c4 100644
--- a/doc/subst.n
+++ b/doc/subst.n
@@ -15,7 +15,6 @@ subst \- Perform backslash, command, and variable substitutions
 .SH SYNOPSIS
 \fBsubst \fR?\fB\-nobackslashes\fR? ?\fB\-nocommands\fR? ?\fB\-novariables\fR? \fIstring\fR
 .BE
-
 .SH DESCRIPTION
 .PP
 This command performs variable substitutions, command substitutions,
@@ -34,15 +33,14 @@ For example, if \fB\-nocommands\fR is specified, command substitution
 is not performed:  open and close brackets are treated as ordinary characters
 with no special interpretation.
 .PP
-.VS 8.4
 Note that the substitution of one kind can include substitution of 
-other kinds.  For example, even when the \fB-novariables\fR option
+other kinds.  For example, even when the \fB\-novariables\fR option
 is specified, command substitution is performed without restriction.
 This means that any variable substitution necessary to complete the
 command substitution will still take place.  Likewise, any command
 substitution necessary to complete a variable substitution will
-take place, even when \fB-nocommands\fR is specified.  See the
-EXAMPLES below.
+take place, even when \fB\-nocommands\fR is specified.  See the
+\fBEXAMPLES\fR below.
 .PP
 If an error occurs during substitution, then \fBsubst\fR will return
 that error.  If a break exception occurs during command or variable
@@ -54,10 +52,11 @@ will be substituted for that entire command or variable substitution
 (as long as it is well-formed Tcl.)  If a return exception occurs,
 or any other return code is returned during command or variable
 substitution, then the returned value is substituted for that
-substitution.  See the EXAMPLES below.  In this way, all exceptional
-return codes are ``caught'' by \fBsubst\fR.  The \fBsubst\fR command
+substitution.  See the \fBEXAMPLES\fR below.  In this way, all exceptional
+return codes are
+.QW caught
+by \fBsubst\fR.  The \fBsubst\fR command
 itself will either return an error, or will complete successfully.
-.VE
 .SH EXAMPLES
 .PP
 When it performs its substitutions, \fIsubst\fR does not give any
@@ -67,22 +66,31 @@ command substitutions) so the script
 set a 44
 \fBsubst\fR {xyz {$a}}
 .CE
-returns ``\fBxyz {44}\fR'', not ``\fBxyz {$a}\fR''
-.VS 8.4
+returns
+.QW "\fBxyz {44}\fR" ,
+not
+.QW "\fBxyz {$a}\fR"
 and the script
 .CS
-set a "p\\} q \\{r"
+set a "p\e} q \e{r"
 \fBsubst\fR {xyz {$a}}
 .CE
-return ``\fBxyz {p} q {r}\fR'', not ``\fBxyz {p\\} q \\{r}\fR''.
+returns
+.QW "\fBxyz {p} q {r}\fR" ,
+not
+.QW "\fBxyz {p\e} q \e{r}\fR".
 .PP
 When command substitution is performed, it includes any variable
-substitution necessary to evaluate the script.  
+substitution necessary to evaluate the script.
 .CS
 set a 44
 \fBsubst\fR -novariables {$a [format $a]}
 .CE
-returns ``\fB$a 44\fR'', not ``\fB$a $a\fR''.  Similarly, when
+returns
+.QW "\fB$a 44\fR" ,
+not
+.QW "\fB$a $a\fR" .
+Similarly, when
 variable substitution is performed, it includes any command
 substitution necessary to retrieve the value of the variable.
 .CS
@@ -90,7 +98,10 @@ proc b {} {return c}
 array set a {c c [b] tricky}
 \fBsubst\fR -nocommands {[b] $a([b])}
 .CE
-returns ``\fB[b] c\fR'', not ``\fB[b] tricky\fR''.
+returns
+.QW "\fB[b] c\fR" ,
+not
+.QW "\fB[b] tricky\fR" .
 .PP
 The continue and break exceptions allow command substitutions to
 prevent substitution of the rest of the command substitution and the
@@ -99,25 +110,36 @@ when processing text using \fIsubst\fR.  For example, the script
 .CS
 \fBsubst\fR {abc,[break],def}
 .CE
-returns ``\fBabc,\fR'', not ``\fBabc,,def\fR'' and the script
+returns
+.QW \fBabc,\fR ,
+not
+.QW \fBabc,,def\fR
+and the script
 .CS
-\fBsubst\fR {abc,[continue;expr 1+2],def}
+\fBsubst\fR {abc,[continue;expr {1+2}],def}
 .CE
-returns ``\fBabc,,def\fR'', not ``\fBabc,3,def\fR''.
+returns
+.QW \fBabc,,def\fR ,
+not
+.QW \fBabc,3,def\fR .
 .PP
 Other exceptional return codes substitute the returned value
 .CS
-\fBsubst\fR {abc,[return foo;expr 1+2],def}
+\fBsubst\fR {abc,[return foo;expr {1+2}],def}
 .CE
-returns ``\fBabc,foo,def\fR'', not ``\fBabc,3,def\fR'' and
+returns
+.QW \fBabc,foo,def\fR ,
+not
+.QW \fBabc,3,def\fR
+and
 .CS
-\fBsubst\fR {abc,[return -code 10 foo;expr 1+2],def}
+\fBsubst\fR {abc,[return -code 10 foo;expr {1+2}],def}
 .CE
-also returns ``\fBabc,foo,def\fR'', not ``\fBabc,3,def\fR''.
-.VE
-
+also returns
+.QW \fBabc,foo,def\fR ,
+not
+.QW \fBabc,3,def\fR .
 .SH "SEE ALSO"
 Tcl(n), eval(n), break(n), continue(n)
-
 .SH KEYWORDS
 backslash substitution, command substitution, variable substitution
diff --git a/doc/switch.n b/doc/switch.n
index 32da66c..defa849 100644
--- a/doc/switch.n
+++ b/doc/switch.n
@@ -6,7 +6,7 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH switch n 7.0 Tcl "Tcl Built-In Commands"
+.TH switch n 8.5 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
@@ -16,7 +16,6 @@ switch \- Evaluate one of several scripts, depending on a given value
 .sp
 \fBswitch \fR?\fIoptions\fR?\fI string \fR{\fIpattern body \fR?\fIpattern body \fR...?}
 .BE
-
 .SH DESCRIPTION
 .PP
 The \fBswitch\fR command matches its \fIstring\fR argument against each of
@@ -31,8 +30,13 @@ matches \fIstring\fR and no default is given, then the \fBswitch\fR
 command returns an empty string.
 .PP
 If the initial arguments to \fBswitch\fR start with \fB\-\fR then
-they are treated as options.  The following options are
-currently supported:
+they are treated as options
+.VS 8.5
+unless there are exactly two arguments to \fBswitch\fR (in which case the
+first must the \fIstring\fR and the second must be the
+\fIpattern\fR/\fIbody\fR list).
+.VE 8.5
+The following options are currently supported:
 .TP 10
 \fB\-exact\fR
 Use exact matching when comparing \fIstring\fR to a pattern.  This
@@ -46,10 +50,48 @@ When matching \fIstring\fR to the patterns, use glob-style matching
 When matching \fIstring\fR to the patterns, use regular
 expression matching
 (as described in the \fBre_syntax\fR reference page).
+'\" Options defined by TIP#75
+.VS 8.5
+.TP 10
+\fB\-nocase\fR
+Causes comparisons to be handled in a case-insensitive manner.
+.TP 10
+\fB\-matchvar\fR \fIvarName\fR
+This option (only legal when \fB\-regexp\fR is also specified)
+specifies the name of a variable into which the list of matches
+found by the regular expression engine will be written.  The first
+element of the list written will be the overall substring of the input
+string (i.e. the \fIstring\fR argument to \fBswitch\fR) matched, the
+second element of the list will be the substring matched by the first
+capturing parenthesis in the regular expression that matched, and so
+on.  When a \fBdefault\fR branch is taken, the variable will have the
+empty list written to it.  This option may be specified at the same
+time as the \fB\-indexvar\fR option.
+.TP 10
+\fB\-indexvar\fR \fIvarName\fR
+This option (only legal when \fB\-regexp\fR is also specified)
+specifies the name of a variable into which the list of indices
+referring to matching substrings
+found by the regular expression engine will be written.  The first
+element of the list written will be a two-element list specifying the
+index of the start and index of the first character after the end of
+the overall substring of the input
+string (i.e. the \fIstring\fR argument to \fBswitch\fR) matched, in a
+similar way to the \fB\-indices\fR option to the \fBregexp\fR can
+obtain.  Similarly, the second element of the list refers to the first
+capturing parenthesis in the regular expression that matched, and so
+on.  When a \fBdefault\fR branch is taken, the variable will have the
+empty list written to it.  This option may be specified at the same
+time as the \fB\-matchvar\fR option.
+.VE 8.5
 .TP 10
 \fB\-\|\-\fR
 Marks the end of options.  The argument following this one will
 be treated as \fIstring\fR even if it starts with a \fB\-\fR.
+.VS 8.5
+This is not required when the matching patterns and bodies are grouped
+together in a single argument.
+.VE 8.5
 .PP
 Two syntaxes are provided for the \fIpattern\fR and \fIbody\fR arguments.
 The first uses a separate argument for each of the patterns and commands;
@@ -66,9 +108,12 @@ no command or variable substitutions are performed on them;  this makes
 the behavior of the second form different than the first form in some
 cases.
 .PP
-If a \fIbody\fR is specified as ``\fB\-\fR'' it means that the \fIbody\fR
+If a \fIbody\fR is specified as
+.QW \fB\-\fR
+it means that the \fIbody\fR
 for the next pattern should also be used as the body for this
-pattern (if the next pattern also has a body of ``\fB\-\fR''
+pattern (if the next pattern also has a body of
+.QW \fB\-\fR
 then the body after that is used, and so on).
 This feature makes it possible to share a single \fIbody\fR among
 several patterns.
@@ -81,7 +126,7 @@ The \fBswitch\fR command can match against variables and not just
 literals, as shown here (the result is \fI2\fR):
 .CS
 set foo "abc"
-\fBswitch\fR abc a \- b {expr 1} $foo {expr 2} default {expr 3}
+\fBswitch\fR abc a \- b {expr {1}} $foo {expr {2}} default {expr {3}}
 .CE
 .PP
 Using glob matching and the fall-through body is an alternative to
@@ -90,9 +135,9 @@ writing regular expressions with alternations, as can be seen here
 .CS
 \fBswitch\fR \-glob aaab {
    a*b     \-
-   b       {expr 1}
-   a*      {expr 2}
-   default {expr 3}
+   b       {expr {1}}
+   a*      {expr {2}}
+   default {expr {3}}
 }
 .CE
 .PP
@@ -100,22 +145,39 @@ Whenever nothing matches, the \fBdefault\fR clause (which must be
 last) is taken.  This example has a result of \fI3\fR:
 .CS
 \fBswitch\fR xyz {
-   a  \-
+   a \-
    b {
       # Correct Comment Placement
-      expr 1
+      expr {1}
    }
    c {
-      expr 2
+      expr {2}
    }
    default {
-      expr 3
+      expr {3}
+   }
+}
+.CE
+.PP
+.VS 8.5
+When matching against regular expressions, information about what
+exactly matched is easily obtained using the \fB\-matchvar\fR option:
+.CS
+\fBswitch\fR \-regexp \-matchvar foo \-\- $bar {
+   a(b*)c {
+      puts "Found [string length [lindex $foo 1]] 'b's"
+   }
+   d(e*)f(g*)h {
+      puts "Found [string length [lindex $foo 1]] 'e's and\e
+            [string length [lindex $foo 2]] 'g's"
    }
 }
 .CE
-
+.VE 8.5
 .SH "SEE ALSO"
 for(n), if(n), regexp(n)
-
 .SH KEYWORDS
 switch, match, regular expression
+.\" Local Variables:
+.\" mode: nroff
+.\" End:
diff --git a/doc/tclsh.1 b/doc/tclsh.1
index 53782a6..d9fe95e 100644
--- a/doc/tclsh.1
+++ b/doc/tclsh.1
@@ -12,7 +12,7 @@
 .SH NAME
 tclsh \- Simple shell containing Tcl interpreter
 .SH SYNOPSIS
-\fBtclsh\fR ?\fIfileName arg arg ...\fR?
+\fBtclsh\fR ?-encoding \fIname\fR? ?\fIfileName arg arg ...\fR?
 .BE
 
 .SH DESCRIPTION
@@ -26,26 +26,33 @@ It runs until the \fBexit\fR command is invoked or until it
 reaches end-of-file on its standard input.
 If there exists a file \fB.tclshrc\fR (or \fBtclshrc.tcl\fR on
 the Windows platforms) in the home directory of
-the user, \fBtclsh\fR evaluates the file as a Tcl script
+the user, interactive \fBtclsh\fR evaluates the file as a Tcl script
 just before reading the first command from standard input.
 
 .SH "SCRIPT FILES"
 .PP
-If \fBtclsh\fR is invoked with arguments then the first argument
-is the name of a script file and any additional arguments
+.VS 8.5
+If \fBtclsh\fR is invoked with arguments then the first few arguments
+specify the name of a script file, and, optionally, the encoding of
+the text data stored in that script file. 
+.VE 8.5
+Any additional arguments
 are made available to the script as variables (see below).
 Instead of reading commands from standard input \fBtclsh\fR will
 read Tcl commands from the named file;  \fBtclsh\fR will exit
 when it reaches the end of the file.
-.VS 8.4
 The end of the file may be marked either by the physical end of
-the medium, or by the character, '\\032' ('\\u001a', control-Z).
+the medium, or by the character,
+.QW \e032
+.PQ \eu001a ", control-Z" .
 If this character is present in the file, the \fBtclsh\fR application
 will read text up to but not including the character.  An application
 that requires this character in the file may safely encode it as
-``\\032'', ``\\x1a'', or ``\\u001a''; or may generate it by use of commands 
-such as \fBformat\fR or \fBbinary\fR.
-.VE
+.QW \e032 ,
+.QW \ex1a ,
+or
+.QW \eu001a ;
+or may generate it by use of commands such as \fBformat\fR or \fBbinary\fR.
 There is no automatic evaluation of \fB.tclshrc\fR when the name
 of a script file is presented on the \fBtclsh\fR command
 line, but the script file can always \fBsource\fR it if desired.
@@ -57,8 +64,8 @@ If you create a Tcl script in a file whose first line is
 then you can invoke the script file directly from your shell if
 you mark the file as executable.
 This assumes that \fBtclsh\fR has been installed in the default
-location in /usr/local/bin;  if it's installed somewhere else
-then you'll have to modify the above line to match.
+location in /usr/local/bin;  if it is installed somewhere else
+then you will have to modify the above line to match.
 Many UNIX systems do not allow the \fB#!\fR line to exceed about
 30 characters in length, so be sure that the \fBtclsh\fR
 executable can be accessed with a short file name.
@@ -71,7 +78,7 @@ following three lines:
 exec tclsh "$0" ${1+"$@"}\fR
 .CE
 This approach has three advantages over the approach in the previous
-paragraph.  First, the location of the \fBtclsh\fR binary doesn't have
+paragraph.  First, the location of the \fBtclsh\fR binary does not have
 to be hard-wired into the script:  it can be anywhere in your shell
 search path.  Second, it gets around the 30-character file name limit
 in the previous approach.
@@ -89,13 +96,11 @@ When \fBtclsh\fR starts up, it treats all three lines as comments,
 since the backslash at the end of the second line causes the third
 line to be treated as part of the comment on the second line.
 .PP
-.VS
-You should note that it is also common practise to install tclsh with
+You should note that it is also common practice to install tclsh with
 its version number as part of the name.  This has the advantage of
 allowing multiple versions of Tcl to exist on the same system at once,
 but also the disadvantage of making it harder to write scripts that
 start up uniformly across different versions of Tcl.
-.VE
 
 .SH "VARIABLES"
 .PP
@@ -121,14 +126,16 @@ device), 0 otherwise.
 .SH PROMPTS
 .PP
 When \fBtclsh\fR is invoked interactively it normally prompts for each
-command with ``\fB% \fR''.  You can change the prompt by setting the
+command with
+.QW "\fB% \fR" .
+You can change the prompt by setting the
 variables \fBtcl_prompt1\fR and \fBtcl_prompt2\fR.  If variable
 \fBtcl_prompt1\fR exists then it must consist of a Tcl script
 to output a prompt;  instead of outputting a prompt \fBtclsh\fR
 will evaluate the script in \fBtcl_prompt1\fR.
 The variable \fBtcl_prompt2\fR is used in a similar way when
-a newline is typed but the current command isn't yet complete;
-if \fBtcl_prompt2\fR isn't set then no prompt is output for
+a newline is typed but the current command is not yet complete;
+if \fBtcl_prompt2\fR is not set then no prompt is output for
 incomplete commands.
 
 .SH "STANDARD CHANNELS"
@@ -136,7 +143,7 @@ incomplete commands.
 See \fBTcl_StandardChannels\fR for more explanations.
 
 .SH "SEE ALSO"
-fconfigure(n), tclvars(n)
+encoding(n), fconfigure(n), tclvars(n)
 
 .SH KEYWORDS
 argument, interpreter, prompt, script file, shell
diff --git a/doc/tcltest.n b/doc/tcltest.n
index 497afe7..9ac8f66 100644
--- a/doc/tcltest.n
+++ b/doc/tcltest.n
@@ -9,14 +9,14 @@
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
 .so man.macros
-.TH "tcltest" n 2.2 tcltest "Tcl Bundled Packages"
+.TH "tcltest" n 2.3 tcltest "Tcl Bundled Packages"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 tcltest \- Test harness support code and utilities
 .SH SYNOPSIS
 .nf
-\fBpackage require tcltest ?2.2.5?\fR
+\fBpackage require tcltest ?2.3?\fR
 .sp
 \fBtcltest::test \fIname description ?option value ...?\fR
 \fBtcltest::test \fIname description ?constraints? body result\fR
@@ -77,12 +77,12 @@ in and exported from the \fB::tcltest\fR namespace, as indicated in
 the \fBSYNOPSIS\fR above.  In the following sections, all commands
 will be described by their simple names, in the interest of brevity.
 .PP
-The central command of \fBtcltest\fR is [\fBtest\fR] that defines
-and runs a test.  Testing with [\fBtest\fR] involves evaluation
+The central command of \fBtcltest\fR is \fBtest\fR that defines
+and runs a test.  Testing with \fBtest\fR involves evaluation
 of a Tcl script and comparing the result to an expected result, as
 configured and controlled by a number of options.  Several other
 commands provided by \fBtcltest\fR govern the configuration of
-[\fBtest\fR] and the collection of many [\fBtest\fR] commands into
+\fBtest\fR and the collection of many \fBtest\fR commands into
 test suites.
 .PP
 See \fBCREATING TEST SUITES WITH TCLTEST\fR below for an extended example
@@ -93,29 +93,30 @@ for your Tcl-enabled code.
 \fBtest\fR \fIname description ?option value ...?\fR
 Defines and possibly runs a test with the name \fIname\fR and
 description \fIdescription\fR.  The name and description of a test
-are used in messages reported by [\fBtest\fR] during the
+are used in messages reported by \fBtest\fR during the
 test, as configured by the options of \fBtcltest\fR.  The
-remaining \fIoption value\fR arguments to [\fBtest\fR]
+remaining \fIoption value\fR arguments to \fBtest\fR
 define the test, including the scripts to run, the conditions
 under which to run them, the expected result, and the means
 by which the expected and actual results should be compared.
 See \fBTESTS\fR below for a complete description of the valid
-options and how they define a test.  The [\fBtest\fR] command
-returns an empty string.  
+options and how they define a test.  The \fBtest\fR command
+returns an empty string.
 .TP
 \fBtest\fR \fIname description ?constraints? body result\fR
-This form of [\fBtest\fR] is provided to support test suites written
+This form of \fBtest\fR is provided to support test suites written
 for version 1 of the \fBtcltest\fR package, and also a simpler
 interface for a common usage.  It is the same as
-[\fBtest\fR \fIname description\fB -constraints \fIconstraints\fB -body
-\fIbody\fB -result \fIresult\fR].  All other options to [\fBtest\fR]
+.QW "\fBtest\fR \fIname description\fB \-constraints \fIconstraints\fB \-body \fIbody\fB \-result \fIresult\fR" .
+All other options to \fBtest\fR
 take their default values.  When \fIconstraints\fR is omitted, this
-form of [\fBtest\fR] can be distinguished from the first because
-all \fIoption\fRs begin with ``-''.
+form of \fBtest\fR can be distinguished from the first because
+all \fIoption\fRs begin with
+.QW \- .
 .TP
 \fBloadTestedCommands\fR
 Evaluates in the caller's context the script specified by 
-[\fBconfigure -load\fR] or [\fBconfigure -loadfile\fR].
+\fBconfigure \-load\fR or \fBconfigure \-loadfile\fR.
 Returns the result of that script evaluation, including any error
 raised by the script.  Use this command and the related
 configuration options to provide the commands to be tested to
@@ -124,31 +125,31 @@ the interpreter running the test suite.
 \fBmakeFile\fR \fIcontents name ?directory?\fR
 Creates a file named \fIname\fR relative to
 directory \fIdirectory\fR and write \fIcontents\fR
-to that file using the encoding [\fBencoding system\fR].
+to that file using the encoding \fBencoding system\fR.
 If \fIcontents\fR does not end with a newline, a newline
 will be appended so that the file named \fIname\fR
 does end with a newline.  Because the system encoding is used,
 this command is only suitable for making text files.
 The file will be removed by the next evaluation
-of [\fBcleanupTests\fR], unless it is removed by
-[\fBremoveFile\fR] first.  The default value of
-\fIdirectory\fR is the directory [\fBconfigure -tmpdir\fR].
+of \fBcleanupTests\fR, unless it is removed by
+\fBremoveFile\fR first.  The default value of
+\fIdirectory\fR is the directory \fBconfigure \-tmpdir\fR.
 Returns the full path of the file created.  Use this command
 to create any text file required by a test with contents as needed.
 .TP
 \fBremoveFile\fR \fIname ?directory?\fR
 Forces the file referenced by \fIname\fR to be removed.  This file name
 should be relative to \fIdirectory\fR.   The default value of
-\fIdirectory\fR is the directory [\fBconfigure -tmpdir\fR].
+\fIdirectory\fR is the directory \fBconfigure \-tmpdir\fR.
 Returns an empty string.  Use this command to delete files
-created by [\fBmakeFile\fR].  
+created by \fBmakeFile\fR.
 .TP
 \fBmakeDirectory\fR \fIname ?directory?\fR
 Creates a directory named \fIname\fR relative to directory \fIdirectory\fR.
-The directory will be removed by the next evaluation of [\fBcleanupTests\fR],
-unless it is removed by [\fBremoveDirectory\fR] first.
+The directory will be removed by the next evaluation of \fBcleanupTests\fR,
+unless it is removed by \fBremoveDirectory\fR first.
 The default value of \fIdirectory\fR is the directory
-[\fBconfigure -tmpdir\fR].
+\fBconfigure \-tmpdir\fR.
 Returns the full path of the directory created.  Use this command
 to create any directories that are required to exist by a test.
 .TP
@@ -156,16 +157,16 @@ to create any directories that are required to exist by a test.
 Forces the directory referenced by \fIname\fR to be removed. This
 directory should be relative to \fIdirectory\fR.
 The default value of \fIdirectory\fR is the directory
-[\fBconfigure -tmpdir\fR].
+\fBconfigure \-tmpdir\fR.
 Returns an empty string.  Use this command to delete any directories
-created by [\fBmakeDirectory\fR].  
+created by \fBmakeDirectory\fR.
 .TP
 \fBviewFile\fR \fIfile ?directory?\fR
 Returns the contents of \fIfile\fR, except for any
-final newline, just as [\fBread -nonewline\fR] would return.
-This file name should be relative to \fIdirectory\fR.   
+final newline, just as \fBread \-nonewline\fR would return.
+This file name should be relative to \fIdirectory\fR.
 The default value of \fIdirectory\fR is the directory
-[\fBconfigure -tmpdir\fR].  Use this command
+\fBconfigure \-tmpdir\fR.  Use this command
 as a convenient way to turn the contents of a file generated
 by a test into the result of that test for matching against
 an expected result.  The contents of the file are read using
@@ -176,25 +177,27 @@ files.
 Intended to clean up and summarize after several tests have been
 run.  Typically called once per test file, at the end of the file
 after all tests have been completed.  For best effectiveness, be
-sure that the [\fBcleanupTests\fR] is evaluated even if an error
-occurs earlier in the test file evaluation.  
-.sp
+sure that the \fBcleanupTests\fR is evaluated even if an error
+occurs earlier in the test file evaluation.
+.RS
+.PP
 Prints statistics about the tests run and removes files that were
-created by [\fBmakeDirectory\fR] and [\fBmakeFile\fR] since the
-last [\fBcleanupTests\fR].  Names of files and directories 
-in the directory [\fBconfigure -tmpdir\fR] created since
-the last [\fBcleanupTests\fR], but not created by
-[\fBmakeFile\fR] or [\fBmakeDirectory\fR] are printed
-to [\fBoutputChannel\fR].  This command also restores the original
-shell environment, as described by the ::env
+created by \fBmakeDirectory\fR and \fBmakeFile\fR since the
+last \fBcleanupTests\fR.  Names of files and directories
+in the directory \fBconfigure \-tmpdir\fR created since
+the last \fBcleanupTests\fR, but not created by
+\fBmakeFile\fR or \fBmakeDirectory\fR are printed
+to \fBoutputChannel\fR.  This command also restores the original
+shell environment, as described by the \fB::env\fR
 array. Returns an empty string.
+.RE
 .TP
 \fBrunAllTests\fR
 This is a master command meant to run an entire suite of tests,
 spanning multiple files and/or directories, as governed by
 the configurable options of \fBtcltest\fR.  See \fBRUNNING ALL TESTS\fR
 below for a complete description of the many variations possible
-with [\fBrunAllTests\fR].
+with \fBrunAllTests\fR.
 .SH "CONFIGURATION COMMANDS"
 .TP
 \fBconfigure\fR
@@ -212,19 +215,21 @@ corresponding value \fIvalue\fR, in order.  Raises an error if
 an \fIoption\fR is not a supported configurable option, or if
 \fIvalue\fR is not a valid value for the corresponding \fIoption\fR,
 or if a \fIvalue\fR is not provided.  When an error is raised, the
-operation of [\fBconfigure\fR] is halted, and subsequent \fIoption value\fR
+operation of \fBconfigure\fR is halted, and subsequent \fIoption value\fR
 arguments are not processed.
-.sp
+.RS
+.PP
 If the environment variable \fB::env(TCLTEST_OPTIONS)\fR exists when
-the \fBtcltest\fR package is loaded (by [\fBpackage require tcltest\fR])
-then its value is taken as a list of arguments to pass to [\fBconfigure\fR].
+the \fBtcltest\fR package is loaded (by \fBpackage require tcltest\fR)
+then its value is taken as a list of arguments to pass to \fBconfigure\fR.
 This allows the default values of the configuration options to be
 set by the environment.
+.RE
 .TP
 \fBcustomMatch \fImode script\fR
-Registers \fImode\fR as a new legal value of the \fB-match\fR option
-to [\fBtest\fR].  When the \fB-match \fImode\fR option is
-passed to [\fBtest\fR], the script \fIscript\fR will be evaluated
+Registers \fImode\fR as a new legal value of the \fB\-match\fR option
+to \fBtest\fR.  When the \fB\-match \fImode\fR option is
+passed to \fBtest\fR, the script \fIscript\fR will be evaluated
 to compare the actual result of evaluating the body of the test
 to the expected result.
 To perform the match, the \fIscript\fR is completed with two additional
@@ -232,82 +237,82 @@ words, the expected result, and the actual result, and the completed script
 is evaluated in the global namespace.
 The completed script is expected to return a boolean value indicating
 whether or not the results match.  The built-in matching modes of
-[\fBtest\fR] are \fBexact\fR, \fBglob\fR, and \fBregexp\fR.
+\fBtest\fR are \fBexact\fR, \fBglob\fR, and \fBregexp\fR.
 .TP
 \fBtestConstraint \fIconstraint ?boolean?\fR
 Sets or returns the boolean value associated with the named \fIconstraint\fR.
 See \fBTEST CONSTRAINTS\fR below for more information.
 .TP
 \fBinterpreter\fR \fI?executableName?\fR
-Sets or returns the name of the executable to be [\fBexec\fR]ed by
-[\fBrunAllTests\fR] to run each test file when
-[\fBconfigure -singleproc\fR] is false.
-The default value for [\fBinterpreter\fR] is the name of the
-currently running program as returned by [\fBinfo nameofexecutable\fR].
+Sets or returns the name of the executable to be \fBexec\fRed by
+\fBrunAllTests\fR to run each test file when
+\fBconfigure \-singleproc\fR is false.
+The default value for \fBinterpreter\fR is the name of the
+currently running program as returned by \fBinfo nameofexecutable\fR.
 .TP
 \fBoutputChannel\fR \fI?channelID?\fR
 Sets or returns the output channel ID.  This defaults to stdout.
 Any test that prints test related output should send
-that output to [\fBoutputChannel\fR] rather than letting
+that output to \fBoutputChannel\fR rather than letting
 that output default to stdout.
 .TP
 \fBerrorChannel\fR \fI?channelID?\fR
 Sets or returns the error channel ID.  This defaults to stderr.
 Any test that prints error messages should send
-that output to [\fBerrorChannel\fR] rather than printing
+that output to \fBerrorChannel\fR rather than printing
 directly to stderr.
 .SH "SHORTCUT COMMANDS"
 .TP
 \fBdebug \fI?level?\fR
-Same as [\fBconfigure -debug \fI?level?\fR].
+Same as \fBconfigure \-debug \fI?level?\fR.
 .TP
 \fBerrorFile \fI?filename?\fR
-Same as [\fBconfigure -errfile \fI?filename?\fR].
+Same as \fBconfigure \-errfile \fI?filename?\fR.
 .TP
 \fBlimitConstraints \fI?boolean?\fR
-Same as [\fBconfigure -limitconstraints \fI?boolean?\fR].
+Same as \fBconfigure \-limitconstraints \fI?boolean?\fR.
 .TP
 \fBloadFile \fI?filename?\fR
-Same as [\fBconfigure -loadfile \fI?filename?\fR].
+Same as \fBconfigure \-loadfile \fI?filename?\fR.
 .TP
 \fBloadScript \fI?script?\fR
-Same as [\fBconfigure -load \fI?script?\fR].
+Same as \fBconfigure \-load \fI?script?\fR.
 .TP
 \fBmatch \fI?patternList?\fR
-Same as [\fBconfigure -match \fI?patternList?\fR].
+Same as \fBconfigure \-match \fI?patternList?\fR.
 .TP
 \fBmatchDirectories \fI?patternList?\fR
-Same as [\fBconfigure -relateddir \fI?patternList?\fR].
+Same as \fBconfigure \-relateddir \fI?patternList?\fR.
 .TP
 \fBmatchFiles \fI?patternList?\fR
-Same as [\fBconfigure -file \fI?patternList?\fR].
+Same as \fBconfigure \-file \fI?patternList?\fR.
 .TP
 \fBoutputFile \fI?filename?\fR
-Same as [\fBconfigure -outfile \fI?filename?\fR].
+Same as \fBconfigure \-outfile \fI?filename?\fR.
 .TP
 \fBpreserveCore \fI?level?\fR
-Same as [\fBconfigure -preservecore \fI?level?\fR].
+Same as \fBconfigure \-preservecore \fI?level?\fR.
 .TP
 \fBsingleProcess \fI?boolean?\fR
-Same as [\fBconfigure -singleproc \fI?boolean?\fR].
+Same as \fBconfigure \-singleproc \fI?boolean?\fR.
 .TP
 \fBskip \fI?patternList?\fR
-Same as [\fBconfigure -skip \fI?patternList?\fR].
+Same as \fBconfigure \-skip \fI?patternList?\fR.
 .TP
 \fBskipDirectories \fI?patternList?\fR
-Same as [\fBconfigure -asidefromdir \fI?patternList?\fR].
+Same as \fBconfigure \-asidefromdir \fI?patternList?\fR.
 .TP
 \fBskipFiles \fI?patternList?\fR
-Same as [\fBconfigure -notfile \fI?patternList?\fR].
+Same as \fBconfigure \-notfile \fI?patternList?\fR.
 .TP
 \fBtemporaryDirectory \fI?directory?\fR
-Same as [\fBconfigure -tmpdir \fI?directory?\fR].
+Same as \fBconfigure \-tmpdir \fI?directory?\fR.
 .TP
 \fBtestsDirectory \fI?directory?\fR
-Same as [\fBconfigure -testdir \fI?directory?\fR].
+Same as \fBconfigure \-testdir \fI?directory?\fR.
 .TP
 \fBverbose \fI?level?\fR
-Same as [\fBconfigure -verbose \fI?level?\fR].
+Same as \fBconfigure \-verbose \fI?level?\fR.
 .SH "OTHER COMMANDS"
 .PP
 The remaining commands provided by \fBtcltest\fR have better
@@ -316,43 +321,49 @@ are retained to support existing test suites, but should be avoided
 in new code.
 .TP
 \fBtest\fR \fIname description optionList\fR
-This form of [\fBtest\fR] was provided to enable passing many
-options spanning several lines to [\fBtest\fR] as a single
+This form of \fBtest\fR was provided to enable passing many
+options spanning several lines to \fBtest\fR as a single
 argument quoted by braces, rather than needing to backslash quote
-the newlines between arguments to [\fBtest\fR].  The \fIoptionList\fR
+the newlines between arguments to \fBtest\fR.  The \fIoptionList\fR
 argument is expected to be a list with an even number of elements
 representing \fIoption\fR and \fIvalue\fR arguments to pass
-to [\fBtest\fR].  However, these values are not passed directly, as
-in the alternate forms of [\fBswitch\fR].  Instead, this form makes
+to \fBtest\fR.  However, these values are not passed directly, as
+in the alternate forms of \fBswitch\fR.  Instead, this form makes
 an unfortunate attempt to overthrow Tcl's substitution rules by
 performing substitutions on some of the list elements as an attempt to
-implement a ``do what I mean'' interpretation of a brace-enclosed
-``block''.  The result is nearly impossible to document clearly, and
+implement a
+.QW "do what I mean"
+interpretation of a brace-enclosed
+.QW block .
+The result is nearly impossible to document clearly, and
 for that reason this form is not recommended.  See the examples in
 \fBCREATING TEST SUITES WITH TCLTEST\fR below to see that this
 form is really not necessary to avoid backslash-quoted newlines.
 If you insist on using this form, examine
 the source code of \fBtcltest\fR if you want to know the substitution
 details, or just enclose the third through last argument
-to [\fBtest\fR] in braces and hope for the best.
+to \fBtest\fR in braces and hope for the best.
 .TP
 \fBworkingDirectory\fR \fI?directoryName?\fR
 Sets or returns the current working directory when the test suite is
 running.  The default value for workingDirectory is the directory in
-which the test suite was launched.  The Tcl commands [\fBcd\fR] and
-[\fBpwd\fR] are sufficient replacements.
+which the test suite was launched.  The Tcl commands \fBcd\fR and
+\fBpwd\fR are sufficient replacements.
 .TP
 \fBnormalizeMsg\fR \fImsg\fR
-Returns the result of removing the ``extra'' newlines from \fImsg\fR,
-where ``extra'' is rather imprecise.  Tcl offers plenty of string
+Returns the result of removing the
+.QW extra
+newlines from \fImsg\fR, where
+.QW extra
+is rather imprecise.  Tcl offers plenty of string
 processing commands to modify strings as you wish, and
-[\fBcustomMatch\fR] allows flexible matching of actual and expected
+\fBcustomMatch\fR allows flexible matching of actual and expected
 results.
 .TP
 \fBnormalizePath\fR \fIpathVar\fR
 Resolves symlinks in a path, thus creating a path without internal
 redirection.  It is assumed that \fIpathVar\fR is absolute.
-\fIpathVar\fR is modified in place.  The Tcl command [\fBfile normalize\fR]
+\fIpathVar\fR is modified in place.  The Tcl command \fBfile normalize\fR
 is a sufficient replacement.
 .TP
 \fBbytestring\fR \fIstring\fR
@@ -362,52 +373,54 @@ value supplied in \fIstring\fR.  This allows the tester to create
 denormalized or improperly formed strings to pass to C procedures that
 are supposed to accept strings with embedded NULL types and confirm
 that a string result has a certain pattern of bytes.  This is
-exactly equivalent to the Tcl command [\fBencoding convertfrom identity\fR].
+exactly equivalent to the Tcl command \fBencoding convertfrom identity\fR.
 .SH TESTS
 .PP
-The [\fBtest\fR] command is the heart of the \fBtcltest\fR package.
+The \fBtest\fR command is the heart of the \fBtcltest\fR package.
 Its essential function is to evaluate a Tcl script and compare
-the result with an expected result.  The options of [\fBtest\fR]
+the result with an expected result.  The options of \fBtest\fR
 define the test script, the environment in which to evaluate it,
 the expected result, and how the compare the actual result to
 the expected result.  Some configuration options of \fBtcltest\fR
-also influence how [\fBtest\fR] operates.
+also influence how \fBtest\fR operates.
+.PP
+The valid options for \fBtest\fR are summarized:
 .PP
-The valid options for [\fBtest\fR] are summarized:
 .CS
-.ta 0.8i
 \fBtest\fR \fIname\fR \fIdescription\fR
-	?-constraints \fIkeywordList|expression\fR?
-	?-setup \fIsetupScript\fR?
-	?-body \fItestScript\fR?
-	?-cleanup \fIcleanupScript\fR?
-	?-result \fIexpectedAnswer\fR?
-	?-output \fIexpectedOutput\fR?
-	?-errorOutput \fIexpectedError\fR?
-	?-returnCodes \fIcodeList\fR?
-	?-match \fImode\fR?
+        ?-constraints \fIkeywordList|expression\fR?
+        ?-setup \fIsetupScript\fR?
+        ?-body \fItestScript\fR?
+        ?-cleanup \fIcleanupScript\fR?
+        ?-result \fIexpectedAnswer\fR?
+        ?-output \fIexpectedOutput\fR?
+        ?-errorOutput \fIexpectedError\fR?
+        ?-returnCodes \fIcodeList\fR?
+        ?-match \fImode\fR?
 .CE
+.PP
 The \fIname\fR may be any string.  It is conventional to choose
 a \fIname\fR according to the pattern:
+.PP
 .CS
 \fItarget\fR-\fImajorNum\fR.\fIminorNum\fR
 .CE
+.PP
 For white-box (regression) tests, the target should be the name of the
 C function or Tcl procedure being tested.  For black-box tests, the
 target should be the name of the feature being tested.  Some conventions
 call for the names of black-box tests to have the suffix \fB_bb\fR.
 Related tests should share a major number.  As a test suite evolves,
 it is best to have the same test name continue to correspond to the
-same test, so that it remains meaningful to say things like ``Test
-foo-1.3 passed in all releases up to 3.4, but began failing in
-release 3.5.''
+same test, so that it remains meaningful to say things like
+.QW "Test foo-1.3 passed in all releases up to 3.4, but began failing in release 3.5."
 .PP
-During evaluation of [\fBtest\fR], the \fIname\fR will be compared
+During evaluation of \fBtest\fR, the \fIname\fR will be compared
 to the lists of string matching patterns returned by
-[\fBconfigure -match\fR], and [\fBconfigure -skip\fR].  The test
+\fBconfigure \-match\fR, and \fBconfigure \-skip\fR.  The test
 will be run only if \fIname\fR matches any of the patterns from
-[\fBconfigure -match\fR] and matches none of the patterns
-from [\fBconfigure -skip\fR].
+\fBconfigure \-match\fR and matches none of the patterns
+from \fBconfigure \-skip\fR.
 .PP
 The \fIdescription\fR should be a short textual description of the
 test.  The \fIdescription\fR is included in output produced by the
@@ -419,124 +432,125 @@ a bug, include the bug ID in the description.
 .PP
 Valid attributes and associated values are:
 .TP
-\fB-constraints \fIkeywordList|expression\fR
-The optional \fB-constraints\fR attribute can be list of one or more
-keywords or an expression.  If the \fB-constraints\fR value is a list of
+\fB\-constraints \fIkeywordList|expression\fR
+The optional \fB\-constraints\fR attribute can be list of one or more
+keywords or an expression.  If the \fB\-constraints\fR value is a list of
 keywords, each of these keywords should be the name of a constraint
-defined by a call to [\fBtestConstraint\fR].  If any of the listed
+defined by a call to \fBtestConstraint\fR.  If any of the listed
 constraints is false or does not exist, the test is skipped.  If the
-\fB-constraints\fR value is an expression, that expression
+\fB\-constraints\fR value is an expression, that expression
 is evaluated. If the expression evaluates to true, then the test is run.
-Note that the expression form of \fB-constraints\fR may interfere with the
-operation of [\fBconfigure -constraints\fR] and
-[\fBconfigure -limitconstraints\fR], and is not recommended.
+Note that the expression form of \fB\-constraints\fR may interfere with the
+operation of \fBconfigure \-constraints\fR and
+\fBconfigure \-limitconstraints\fR, and is not recommended.
 Appropriate constraints should be added to any tests that should
 not always be run.  That is, conditional evaluation of a test
-should be accomplished by the \fB-constraints\fR option, not by
-conditional evaluation of [\fBtest\fR].  In that way, the same
+should be accomplished by the \fB\-constraints\fR option, not by
+conditional evaluation of \fBtest\fR.  In that way, the same
 number of tests are always reported by the test suite, though
 the number skipped may change based on the testing environment.
 The default value is an empty list.  
 See \fBTEST CONSTRAINTS\fR below for a list of built-in constraints 
 and information on how to add your own constraints.
 .TP
-\fB-setup \fIscript\fR
-The optional \fB-setup\fR attribute indicates a \fIscript\fR that will be run
-before the script indicated by the \fB-body\fR attribute.  If evaluation
+\fB\-setup \fIscript\fR
+The optional \fB\-setup\fR attribute indicates a \fIscript\fR that will be run
+before the script indicated by the \fB\-body\fR attribute.  If evaluation
 of \fIscript\fR raises an error, the test will fail.  The default value
 is an empty script.
 .TP
-\fB-body \fIscript\fR
-The \fB-body\fR attribute indicates the \fIscript\fR to run to carry out the 
+\fB\-body \fIscript\fR
+The \fB\-body\fR attribute indicates the \fIscript\fR to run to carry out the 
 test.  It must return a result that can be checked for correctness.
 If evaluation of \fIscript\fR raises an error, the test will fail.
 The default value is an empty script.
 .TP
-\fB-cleanup \fIscript\fR
-The optional \fB-cleanup\fR attribute indicates a \fIscript\fR that will be
-run after the script indicated by the \fB-body\fR attribute.
+\fB\-cleanup \fIscript\fR
+The optional \fB\-cleanup\fR attribute indicates a \fIscript\fR that will be
+run after the script indicated by the \fB\-body\fR attribute.
 If evaluation of \fIscript\fR raises an error, the test will fail.
 The default value is an empty script.
 .TP
-\fB-match \fImode\fR
-The \fB-match\fR attribute determines how expected answers supplied by
-\fB-result\fR, \fB-output\fR, and \fB-errorOutput\fR are compared.  Valid
+\fB\-match \fImode\fR
+The \fB\-match\fR attribute determines how expected answers supplied by
+\fB\-result\fR, \fB\-output\fR, and \fB\-errorOutput\fR are compared.  Valid
 values for \fImode\fR are \fBregexp\fR, \fBglob\fR, \fBexact\fR, and
-any value registered by a prior call to [\fBcustomMatch\fR].  The default
+any value registered by a prior call to \fBcustomMatch\fR.  The default
 value is \fBexact\fR.
 .TP
-\fB-result \fIexpectedValue\fR
-The \fB-result\fR attribute supplies the \fIexpectedValue\fR against which
+\fB\-result \fIexpectedValue\fR
+The \fB\-result\fR attribute supplies the \fIexpectedValue\fR against which
 the return value from script will be compared. The default value is
 an empty string.
 .TP
-\fB-output \fIexpectedValue\fR
-The \fB-output\fR attribute supplies the \fIexpectedValue\fR against which
-any output sent to \fBstdout\fR or [\fBoutputChannel\fR] during evaluation
+\fB\-output \fIexpectedValue\fR
+The \fB\-output\fR attribute supplies the \fIexpectedValue\fR against which
+any output sent to \fBstdout\fR or \fBoutputChannel\fR during evaluation
 of the script(s) will be compared.  Note that only output printed using
-[\fB::puts\fR] is used for comparison.  If \fB-output\fR is not specified,
-output sent to \fBstdout\fR and [\fBoutputChannel\fR] is not processed for
+\fB::puts\fR is used for comparison.  If \fB\-output\fR is not specified,
+output sent to \fBstdout\fR and \fBoutputChannel\fR is not processed for
 comparison.
 .TP
-\fB-errorOutput \fIexpectedValue\fR
-The \fB-errorOutput\fR attribute supplies the \fIexpectedValue\fR against
-which any output sent to \fBstderr\fR or [\fBerrorChannel\fR] during 
+\fB\-errorOutput \fIexpectedValue\fR
+The \fB\-errorOutput\fR attribute supplies the \fIexpectedValue\fR against
+which any output sent to \fBstderr\fR or \fBerrorChannel\fR during 
 evaluation of the script(s) will be compared. Note that only output
-printed using [\fB::puts\fR] is used for comparison.  If \fB-errorOutput\fR
-is not specified, output sent to \fBstderr\fR and [\fBerrorChannel\fR] is
+printed using \fB::puts\fR is used for comparison.  If \fB\-errorOutput\fR
+is not specified, output sent to \fBstderr\fR and \fBerrorChannel\fR is
 not processed for comparison.
 .TP
-\fB-returnCodes \fIexpectedCodeList\fR
-The optional \fB-returnCodes\fR attribute supplies \fIexpectedCodeList\fR,
+\fB\-returnCodes \fIexpectedCodeList\fR
+The optional \fB\-returnCodes\fR attribute supplies \fIexpectedCodeList\fR,
 a list of return codes that may be accepted from evaluation of the
-\fB-body\fR script.  If evaluation of the \fB-body\fR script returns
+\fB\-body\fR script.  If evaluation of the \fB\-body\fR script returns
 a code not in the \fIexpectedCodeList\fR, the test fails.  All
-return codes known to [\fBreturn\fR], in both numeric and symbolic
+return codes known to \fBreturn\fR, in both numeric and symbolic
 form, including extended return codes, are acceptable elements in
-the \fIexpectedCodeList\fR.  Default value is \fB{ok return}\fR.
+the \fIexpectedCodeList\fR.  Default value is
+.QW \fBok return\fR.
 .PP
-To pass, a test must successfully evaluate its \fB-setup\fR, \fB-body\fR,
-and \fB-cleanup\fR scripts.  The return code of the \fB-body\fR script and
+To pass, a test must successfully evaluate its \fB\-setup\fR, \fB\-body\fR,
+and \fB\-cleanup\fR scripts.  The return code of the \fB\-body\fR script and
 its result must match expected values, and if specified, output and error
-data from the test must match expected \fB-output\fR and \fB-errorOutput\fR
+data from the test must match expected \fB\-output\fR and \fB\-errorOutput\fR
 values.  If any of these conditions are not met, then the test fails.
 Note that all scripts are evaluated in the context of the caller
-of [\fBtest\fR].
+of \fBtest\fR.
 .PP
-As long as [\fBtest\fR] is called with valid syntax and legal
+As long as \fBtest\fR is called with valid syntax and legal
 values for all attributes, it will not raise an error.  Test
-failures are instead reported as output written to [\fBoutputChannel\fR].
+failures are instead reported as output written to \fBoutputChannel\fR.
 In default operation, a successful test produces no output.  The output
-messages produced by [\fBtest\fR] are controlled by the
-[\fBconfigure -verbose\fR] option as described in \fBCONFIGURABLE OPTIONS\fR
+messages produced by \fBtest\fR are controlled by the
+\fBconfigure \-verbose\fR option as described in \fBCONFIGURABLE OPTIONS\fR
 below.  Any output produced by the test scripts themselves should be
-produced using [\fB::puts\fR] to [\fBoutputChannel\fR] or
-[\fBerrorChannel\fR], so that users of the test suite may
-easily capture output with the [\fBconfigure -outfile\fR] and
-[\fBconfigure -errfile\fR] options, and so that the \fB-output\fR
-and \fB-errorOutput\fR attributes work properly.
+produced using \fB::puts\fR to \fBoutputChannel\fR or
+\fBerrorChannel\fR, so that users of the test suite may
+easily capture output with the \fBconfigure \-outfile\fR and
+\fBconfigure \-errfile\fR options, and so that the \fB\-output\fR
+and \fB\-errorOutput\fR attributes work properly.
 .SH "TEST CONSTRAINTS"
 .PP
 Constraints are used to determine whether or not a test should be skipped.
 Each constraint has a name, which may be any string, and a boolean
-value.  Each [\fBtest\fR] has a \fB-constraints\fR value which is a
+value.  Each \fBtest\fR has a \fB\-constraints\fR value which is a
 list of constraint names.  There are two modes of constraint control.
 Most frequently, the default mode is used, indicated by a setting
-of [\fBconfigure -limitconstraints\fR] to false.  The test will run
+of \fBconfigure \-limitconstraints\fR to false.  The test will run
 only if all constraints in the list are true-valued.  Thus,
-the \fB-constraints\fR option of [\fBtest\fR] is a convenient, symbolic
+the \fB\-constraints\fR option of \fBtest\fR is a convenient, symbolic
 way to define any conditions required for the test to be possible or
-meaningful.  For example, a [\fBtest\fR] with \fB-constraints unix\fR
+meaningful.  For example, a \fBtest\fR with \fB\-constraints unix\fR
 will only be run if the constraint \fBunix\fR is true, which indicates
 the test suite is being run on a Unix platform.
 .PP
-Each [\fBtest\fR] should include whatever \fB-constraints\fR are
+Each \fBtest\fR should include whatever \fB\-constraints\fR are
 required to constrain it to run only where appropriate.  Several
 constraints are pre-defined in the \fBtcltest\fR package, listed
 below.  The registration of user-defined constraints is performed
-by the [\fBtestConstraint\fR] command.  User-defined constraints
+by the \fBtestConstraint\fR command.  User-defined constraints
 may appear within a test file, or within the script specified
-by the [\fBconfigure -load\fR] or [\fBconfigure -loadfile\fR]
+by the \fBconfigure \-load\fR or \fBconfigure \-loadfile\fR
 options.
 .PP
 The following is a list of constraints pre-defined by the
@@ -581,15 +595,15 @@ test can not be run on a Mac.  This flag is used
 to temporarily disable a test.
 .TP
 \fIunixCrash\fR
-test crashes if it's run on Unix.  This flag is used to temporarily
+test crashes if it is run on Unix.  This flag is used to temporarily
 disable a test. 
 .TP
 \fIwinCrash\fR
-test crashes if it's run on Windows.  This flag is used to temporarily
+test crashes if it is run on Windows.  This flag is used to temporarily
 disable a test. 
 .TP
 \fImacCrash\fR
-test crashes if it's run on a Mac.  This flag is used to temporarily
+test crashes if it is run on a Mac.  This flag is used to temporarily
 disable a test. 
 .TP
 \fIemptyTest\fR
@@ -643,46 +657,50 @@ test can only run if Unix user is not root
 .TP
 \fIeformat\fR
 test can only run if app has a working version of sprintf with respect
-to the "e" format of floating-point numbers.
+to the
+.QW e
+format of floating-point numbers.
 .TP
 \fIstdio\fR
-test can only be run if [\fBinterpreter\fR] can be [\fBopen\fR]ed
+test can only be run if \fBinterpreter\fR can be \fBopen\fRed
 as a pipe.
 .PP
 The alternative mode of constraint control is enabled by setting
-[\fBconfigure -limitconstraints\fR] to true.  With that configuration
+\fBconfigure \-limitconstraints\fR to true.  With that configuration
 setting, all existing constraints other than those in the constraint
-list returned by [\fBconfigure -constraints\fR] are set to false.
-When the value of [\fBconfigure -constraints\fR]
+list returned by \fBconfigure \-constraints\fR are set to false.
+When the value of \fBconfigure \-constraints\fR
 is set, all those constraints are set to true.  The effect is that
-when both options [\fBconfigure -constraints\fR] and
-[\fBconfigure -limitconstraints\fR] are in use, only those tests including
-only constraints from the [\fBconfigure -constraints\fR] list
+when both options \fBconfigure \-constraints\fR and
+\fBconfigure \-limitconstraints\fR are in use, only those tests including
+only constraints from the \fBconfigure \-constraints\fR list
 are run; all others are skipped.  For example, one might set
 up a configuration with
+.PP
 .CS
 \fBconfigure\fR -constraints knownBug \e
           -limitconstraints true \e
           -verbose pass
 .CE
+.PP
 to run exactly those tests that exercise known bugs, and discover
-whether any of them pass, indicating the bug had been fixed.  
+whether any of them pass, indicating the bug had been fixed.
 .SH "RUNNING ALL TESTS"
 .PP
-The single command [\fBrunAllTests\fR] is evaluated to run an entire
+The single command \fBrunAllTests\fR is evaluated to run an entire
 test suite, spanning many files and directories.  The configuration
 options of \fBtcltest\fR control the precise operations.  The
-[\fBrunAllTests\fR] command begins by printing a summary of its
-configuration to [\fBoutputChannel\fR].
+\fBrunAllTests\fR command begins by printing a summary of its
+configuration to \fBoutputChannel\fR.
 .PP
 Test files to be evaluated are sought in the directory
-[\fBconfigure -testdir\fR].  The list of files in that directory
-that match any of the patterns in [\fBconfigure -file\fR] and
-match none of the patterns in [\fBconfigure -notfile\fR] is generated
+\fBconfigure \-testdir\fR.  The list of files in that directory
+that match any of the patterns in \fBconfigure \-file\fR and
+match none of the patterns in \fBconfigure \-notfile\fR is generated
 and sorted.  Then each file will be evaluated in turn.  If
-[\fBconfigure -singleproc\fR] is true, then each file will
-be [\fBsource\fR]d in the caller's context.  If it is false,
-then a copy of [\fBinterpreter\fR] will be [\fBexec\fR]d to
+\fBconfigure \-singleproc\fR is true, then each file will
+be \fBsource\fRd in the caller's context.  If it is false,
+then a copy of \fBinterpreter\fR will be \fBexec\fR'd to
 evaluate each file.  The multi-process operation is useful
 when testing can cause errors so severe that a process 
 terminates.  Although such an error may terminate a child
@@ -690,17 +708,17 @@ process evaluating one file, the master process can continue
 with the rest of the test suite.  In multi-process operation,
 the configuration of \fBtcltest\fR in the master process is
 passed to the child processes as command line arguments,
-with the exception of [\fBconfigure -outfile\fR].  The
-[\fBrunAllTests\fR] command in the
+with the exception of \fBconfigure \-outfile\fR.  The
+\fBrunAllTests\fR command in the
 master process collects all output from the child processes
 and collates their results into one master report.  Any
 reports of individual test failures, or messages requested
-by a [\fBconfigure -verbose\fR] setting are passed directly
-on to [\fBoutputChannel\fR] by the master process.
+by a \fBconfigure \-verbose\fR setting are passed directly
+on to \fBoutputChannel\fR by the master process.
 .PP
 After evaluating all selected test files, a summary of the
-results is printed to [\fBoutputChannel\fR].  The summary
-includes the total number of [\fBtest\fR]s evaluated, broken
+results is printed to \fBoutputChannel\fR.  The summary
+includes the total number of \fBtest\fRs evaluated, broken
 down into those skipped, those passed, and those failed.
 The summary also notes the number of files evaluated, and the names
 of any files with failing tests or errors.  A list of
@@ -708,45 +726,45 @@ the constraints that caused tests to be skipped, and the
 number of tests skipped for each is also printed.  Also,
 messages are printed if it appears that evaluation of
 a test file has caused any temporary files to be left
-behind in [\fBconfigure -tmpdir\fR].
+behind in \fBconfigure \-tmpdir\fR.
 .PP
 Having completed and summarized all selected test files,
-[\fBrunAllTests\fR] then recursively acts on subdirectories
-of [\fBconfigure -testdir\fR].  All subdirectories that
-match any of the patterns in [\fBconfigure -relateddir\fR]
+\fBrunAllTests\fR then recursively acts on subdirectories
+of \fBconfigure \-testdir\fR.  All subdirectories that
+match any of the patterns in \fBconfigure \-relateddir\fR
 and do not match any of the patterns in
-[\fBconfigure -asidefromdir\fR] are examined.  If
+\fBconfigure \-asidefromdir\fR are examined.  If
 a file named \fBall.tcl\fR is found in such a directory,
-it will be [\fBsource\fR]d in the caller's context.
+it will be \fBsource\fRd in the caller's context.
 Whether or not an examined directory contains an
 \fBall.tcl\fR file, its subdirectories are also scanned
-against the [\fBconfigure -relateddir\fR] and
-[\fBconfigure -asidefromdir\fR] patterns.  In this way,
+against the \fBconfigure \-relateddir\fR and
+\fBconfigure \-asidefromdir\fR patterns.  In this way,
 many directories in a directory tree can have all their
-test files evaluated by a single [\fBrunAllTests\fR]
+test files evaluated by a single \fBrunAllTests\fR
 command.
 .SH "CONFIGURABLE OPTIONS"
-The [\fBconfigure\fR] command is used to set and query the configurable
+The \fBconfigure\fR command is used to set and query the configurable
 options of \fBtcltest\fR.  The valid options are:
 .TP
-\fB-singleproc \fIboolean\fR
-Controls whether or not [\fBrunAllTests\fR] spawns a child process for
+\fB\-singleproc \fIboolean\fR
+Controls whether or not \fBrunAllTests\fR spawns a child process for
 each test file.  No spawning when \fIboolean\fR is true.  Default
 value is false.
 .TP
-\fB-debug \fIlevel\fR
+\fB\-debug \fIlevel\fR
 Sets the debug level to \fIlevel\fR, an integer value indicating how
 much debugging information should be printed to stdout.  Note that
 debug messages always go to stdout, independent of the value of
-[\fBconfigure -outfile\fR].  Default value is 0.  Levels are defined as:
+\fBconfigure \-outfile\fR.  Default value is 0.  Levels are defined as:
 .RS
 .IP 0
 Do not display any debug information.
 .IP 1
 Display information regarding whether a test is skipped because it
-doesn't match any of the tests that were specified using by
-[\fBconfigure -match\fR] (userSpecifiedNonMatch) or matches any of
-the tests specified by [\fBconfigure -skip\fR] (userSpecifiedSkip).  Also
+does not match any of the tests that were specified using by
+\fBconfigure \-match\fR (userSpecifiedNonMatch) or matches any of
+the tests specified by \fBconfigure \-skip\fR (userSpecifiedSkip).  Also
 print warnings about possible lack of cleanup or balance in test files.
 Also print warnings about any re-use of test names.
 .IP 2
@@ -758,10 +776,10 @@ Display information regarding what individual procs in the test
 harness are doing.
 .RE
 .TP
-\fB-verbose \fIlevel\fR
+\fB\-verbose \fIlevel\fR
 Sets the type of output verbosity desired to \fIlevel\fR,
 a list of zero or more of the elements \fBbody\fR, \fBpass\fR,
-\fBskip\fR, \fBstart\fR, and \fBerror\fR.  Default value
+\fBskip\fR, \fBstart\fR, \fBerror\fR and \fBline\fR.  Default value
 is \fB{body error}\fR.
 Levels are defined as: 
 .RS
@@ -776,108 +794,121 @@ Print output whenever a test starts
 .IP "error (e)"
 Print errorInfo and errorCode, if they exist, when a test return code
 does not match its expected return code
+.IP "line (l)"
+Print source file line information of failed tests
 .RE
 The single letter abbreviations noted above are also recognized
-so that [\fBconfigure -verbose pt\fR] is the same as
-[\fBconfigure -verbose  {pass start}\fR].
+so that
+.QW "\fBconfigure \-verbose pt\fR"
+is the same as
+.QW "\fBconfigure \-verbose {pass start}\fR" .
 .TP
-\fB-preservecore \fIlevel\fR
+\fB\-preservecore \fIlevel\fR
 Sets the core preservation level to \fIlevel\fR.  This level
 determines how stringent checks for core files are.  Default
 value is 0.  Levels are defined as:
 .RS
 .IP 0
-No checking - do not check for core files at the end of each test
-command, but do check for them in [\fBrunAllTests\fR] after all
+No checking \(em do not check for core files at the end of each test
+command, but do check for them in \fBrunAllTests\fR after all
 test files have been evaluated.
 .IP 1
-Also check for core files at the end of each [\fBtest\fR] command.
+Also check for core files at the end of each \fBtest\fR command.
 .IP 2
 Check for core files at all times described above, and save a 
-copy of each core file produced in [\fBconfigure -tmpdir\fR].
+copy of each core file produced in \fBconfigure \-tmpdir\fR.
 .RE
 .TP
-\fB-limitconstraints \fIboolean\fR
-Sets the mode by which [\fBtest\fR] honors constraints as described
+\fB\-limitconstraints \fIboolean\fR
+Sets the mode by which \fBtest\fR honors constraints as described
 in \fBTESTS\fR above.  Default value is false.
 .TP
-\fB-constraints \fIlist\fR
+\fB\-constraints \fIlist\fR
 Sets all the constraints in \fIlist\fR to true.  Also used in
-combination with [\fBconfigure -limitconstraints true\fR] to control an
+combination with \fBconfigure \-limitconstraints true\fR to control an
 alternative constraint mode as described in \fBTESTS\fR above.
 Default value is an empty list.
 .TP
-\fB-tmpdir \fIdirectory\fR
-Sets the temporary directory to be used by [\fBmakeFile\fR],
-[\fBmakeDirectory\fR], [\fBviewFile\fR], [\fBremoveFile\fR], 
-and [\fBremoveDirectory\fR] as the default directory where
+\fB\-tmpdir \fIdirectory\fR
+Sets the temporary directory to be used by \fBmakeFile\fR,
+\fBmakeDirectory\fR, \fBviewFile\fR, \fBremoveFile\fR,
+and \fBremoveDirectory\fR as the default directory where
 temporary files and directories created by test files should
-be created.  Default value is [\fBworkingDirectory\fR].
+be created.  Default value is \fBworkingDirectory\fR.
 .TP
-\fB-testdir \fIdirectory\fR
-Sets the directory searched by [\fBrunAllTests\fR] for test files
-and subdirectories.  Default value is [\fBworkingDirectory\fR].
+\fB\-testdir \fIdirectory\fR
+Sets the directory searched by \fBrunAllTests\fR for test files
+and subdirectories.  Default value is \fBworkingDirectory\fR.
 .TP
-\fB-file \fIpatternList\fR
-Sets the list of patterns used by [\fBrunAllTests\fR] to determine
-what test files to evaluate.  Default value is \fB*.test\fR.
+\fB\-file \fIpatternList\fR
+Sets the list of patterns used by \fBrunAllTests\fR to determine
+what test files to evaluate.  Default value is
+.QW \fB*.test\fR .
 .TP
-\fB-notfile \fIpatternList\fR
-Sets the list of patterns used by [\fBrunAllTests\fR] to determine
-what test files to skip.  Default value is \fBl.*.test\fR, so
-that any SCCS lock files are skipped.
+\fB\-notfile \fIpatternList\fR
+Sets the list of patterns used by \fBrunAllTests\fR to determine
+what test files to skip.  Default value is
+.QW \fBl.*.test\fR ,
+so that any SCCS lock files are skipped.
 .TP
-\fB-relateddir \fIpatternList\fR
-Sets the list of patterns used by [\fBrunAllTests\fR] to determine
+\fB\-relateddir \fIpatternList\fR
+Sets the list of patterns used by \fBrunAllTests\fR to determine
 what subdirectories to search for an \fBall.tcl\fR file.  Default
-value is \fB*\fR.
+value is
+.QW \fB*\fR .
 .TP
-\fB-asidefromdir \fIpatternList\fR
-Sets the list of patterns used by [\fBrunAllTests\fR] to determine
+\fB\-asidefromdir \fIpatternList\fR
+Sets the list of patterns used by \fBrunAllTests\fR to determine
 what subdirectories to skip when searching for an \fBall.tcl\fR file.
 Default value is an empty list.
 .TP
-\fB-match \fIpatternList\fR
-Set the list of patterns used by [\fBtest\fR] to determine whether
-a test should be run.  Default value is \fB*\fR.
+\fB\-match \fIpatternList\fR
+Set the list of patterns used by \fBtest\fR to determine whether
+a test should be run.  Default value is
+.QW \fB*\fR .
 .TP
-\fB-skip \fIpatternList\fR
-Set the list of patterns used by [\fBtest\fR] to determine whether
+\fB\-skip \fIpatternList\fR
+Set the list of patterns used by \fBtest\fR to determine whether
 a test should be skipped.  Default value is an empty list.
 .TP
-\fB-load \fIscript\fR
-Sets a script to be evaluated by [\fBloadTestedCommands\fR].
+\fB\-load \fIscript\fR
+Sets a script to be evaluated by \fBloadTestedCommands\fR.
 Default value is an empty script.
 .TP
-\fB-loadfile \fIfilename\fR
+\fB\-loadfile \fIfilename\fR
 Sets the filename from which to read a script to be evaluated
-by [\fBloadTestedCommands\fR].  This is an alternative to
-\fB-load\fR.  They cannot be used together.
+by \fBloadTestedCommands\fR.  This is an alternative to
+\fB\-load\fR.  They cannot be used together.
 .TP
-\fB-outfile \fIfilename\fR 
+\fB\-outfile \fIfilename\fR 
 Sets the file to which all output produced by tcltest should be
-written.  A file named \fIfilename\fR will be [\fBopen\fR]ed for writing,
-and the resulting channel will be set as the value of [\fBoutputChannel\fR].
+written.  A file named \fIfilename\fR will be \fBopen\fRed for writing,
+and the resulting channel will be set as the value of \fBoutputChannel\fR.
 .TP
-\fB-errfile \fIfilename\fR
+\fB\-errfile \fIfilename\fR
 Sets the file to which all error output produced by tcltest
-should be written.  A file named \fIfilename\fR will be [\fBopen\fR]ed
+should be written.  A file named \fIfilename\fR will be \fBopen\fRed
 for writing, and the resulting channel will be set as the value
-of [\fBerrorChannel\fR].
+of \fBerrorChannel\fR.
 .SH "CREATING TEST SUITES WITH TCLTEST"
 .PP
-The fundamental element of a test suite is the individual [\fBtest\fR]
+The fundamental element of a test suite is the individual \fBtest\fR
 command.  We begin with several examples.
 .IP [1]
 Test of a script that returns normally.
+.RS
+.PP
 .CS
 \fBtest\fR example-1.0 {normal return} {
     format %s value
 } value
 .CE
+.RE
 .IP [2]
 Test of a script that requires context setup and cleanup.  Note the
 bracing and indenting style that avoids any need for line continuation.
+.RS
+.PP
 .CS
 \fBtest\fR example-1.1 {test file existence} -setup {
     set file [makeFile {} test]
@@ -887,15 +918,21 @@ bracing and indenting style that avoids any need for line continuation.
     removeFile test
 } -result 1
 .CE
+.RE
 .IP [3]
 Test of a script that raises an error.
+.RS
+.PP
 .CS
 \fBtest\fR example-1.2 {error return} -body {
     error message
 } -returnCodes error -result message
 .CE
+.RE
 .IP [4]
 Test with a constraint.
+.RS
+.PP
 .CS
 \fBtest\fR example-1.3 {user owns created files} -constraints {
     unix
@@ -907,47 +944,57 @@ Test with a constraint.
     removeFile test
 } -result $::tcl_platform(user)
 .CE
+.RE
 .PP
-At the next higher layer of organization, several [\fBtest\fR] commands
+At the next higher layer of organization, several \fBtest\fR commands
 are gathered together into a single test file.  Test files should have
 names with the \fB.test\fR extension, because that is the default pattern
-used by [\fBrunAllTests\fR] to find test files.  It is a good rule of
+used by \fBrunAllTests\fR to find test files.  It is a good rule of
 thumb to have one test file for each source code file of your project.
 It is good practice to edit the test file and the source code file
 together, keeping tests synchronized with code changes.
 .PP 
-Most of the code in the test file should be the [\fBtest\fR] commands.
+Most of the code in the test file should be the \fBtest\fR commands.
 Use constraints to skip tests, rather than conditional evaluation
-of [\fBtest\fR].  That is, do this:
+of \fBtest\fR.
 .IP [5]
+Recommended system for writing conditional tests, using constraints to
+guard:
+.RS
+.PP
 .CS
 \fBtestConstraint\fR X [expr $myRequirement]
 \fBtest\fR goodConditionalTest {} X {
     # body
 } result
 .CE
-and do not do this:
+.RE
 .IP [6]
+Discouraged system for writing conditional tests, using \fBif\fR to
+guard:
+.RS
+.PP
 .CS
 if $myRequirement {
     test badConditionalTest {} {
-	#body
+        #body
     } result
 }
 .CE
+.RE
 .PP
-Use the \fB-setup\fR and \fB-cleanup\fR options to establish and release
+Use the \fB\-setup\fR and \fB\-cleanup\fR options to establish and release
 all context requirements of the test body.  Do not make tests depend on
 prior tests in the file.  Those prior tests might be skipped.  If several
 consecutive tests require the same context, the appropriate setup
 and cleanup scripts may be stored in variable for passing to each tests
-\fB-setup\fR and \fB-cleanup\fR options.  This is a better solution than
-performing setup outside of [\fBtest\fR] commands, because the setup will
+\fB\-setup\fR and \fB\-cleanup\fR options.  This is a better solution than
+performing setup outside of \fBtest\fR commands, because the setup will
 only be done if necessary, and any errors during setup will be reported,
 and not cause the test file to abort.
 .PP
 A test file should be able to be combined with other test files and not
-interfere with them, even when [\fBconfigure -singleproc 1\fR] causes
+interfere with them, even when \fBconfigure \-singleproc 1\fR causes
 all files to be evaluated in a common interpreter.  A simple way to
 achieve this is to have your tests define all their commands and variables
 in a namespace that is deleted when the test file evaluation is complete.
@@ -955,14 +1002,16 @@ A good namespace to use is a child namespace \fBtest\fR of the namespace
 of the module you are testing.
 .PP
 A test file should also be able to be evaluated directly as a script,
-not depending on being called by a master [\fBrunAllTests\fR].  This
+not depending on being called by a master \fBrunAllTests\fR.  This
 means that each test file should process command line arguments to give
 the tester all the configuration control that \fBtcltest\fR provides.
 .PP
-After all [\fBtest\fR]s in a test file, the command [\fBcleanupTests\fR]
+After all \fBtest\fRs in a test file, the command \fBcleanupTests\fR
 should be called.
 .IP [7]
 Here is a sketch of a sample test file illustrating those points:
+.RS
+.PP
 .CS
 package require tcltest 2.2
 eval \fB::tcltest::configure\fR $argv
@@ -973,36 +1022,40 @@ namespace eval ::example::test {
     variable SETUP {#common setup code}
     variable CLEANUP {#common cleanup code}
     \fBtest\fR example-1 {} -setup $SETUP -body {
-	# First test
+        # First test
     } -cleanup $CLEANUP -result {...}
     \fBtest\fR example-2 {} -constraints X -setup $SETUP -body {
-	# Second test; constrained
+        # Second test; constrained
     } -cleanup $CLEANUP -result {...}
     \fBtest\fR example-3 {} {
-	# Third test; no context required
+        # Third test; no context required
     } {...}
     \fBcleanupTests\fR
 }
 namespace delete ::example::test
 .CE
+.RE
 .PP
 The next level of organization is a full test suite, made up of several
 test files.  One script is used to control the entire suite.  The
-basic function of this script is to call [\fBrunAllTests\fR] after
+basic function of this script is to call \fBrunAllTests\fR after
 doing any necessary setup.  This script is usually named \fBall.tcl\fR
-because that's the default name used by [\fBrunAllTests\fR] when combining
+because that is the default name used by \fBrunAllTests\fR when combining
 multiple test suites into one testing run.
 .IP [8]
 Here is a sketch of a sample test suite master script:
+.RS
+.PP
 .CS
 package require Tcl 8.4
 package require tcltest 2.2
 package require example
-\fB::tcltest::configure\fR -testdir \
+\fB::tcltest::configure\fR -testdir \e
         [file dirname [file normalize [info script]]]
 eval \fB::tcltest::configure\fR $argv
 \fB::tcltest::runAllTests\fR
 .CE
+.RE
 .SH COMPATIBILITY
 .PP
 A number of commands and variables in the \fB::tcltest\fR namespace
@@ -1012,21 +1065,24 @@ here.  They are no longer part of the supported public interface of
 to continue to support existing test suites written to the older
 interface specifications, many of those deprecated commands and
 variables still work as before.  For example, in many circumstances,
-[\fBconfigure\fR] will be automatically called shortly after
-[\fBpackage require tcltest 2.1\fR] succeeds with arguments
+\fBconfigure\fR will be automatically called shortly after
+\fBpackage require tcltest 2.1\fR succeeds with arguments
 from the variable \fB::argv\fR.  This is to support test suites
 that depend on the old behavior that \fBtcltest\fR was automatically
 configured from command line arguments.  New test files should not
 depend on this, but should explicitly include
+.PP
 .CS
 eval \fB::tcltest::configure\fR $::argv
 .CE
+.PP
 to establish a configuration from command line arguments.
 .SH "KNOWN ISSUES"
-There are two known issues related to nested evaluations of [\fBtest\fR].  
+There are two known issues related to nested evaluations of \fBtest\fR.
 The first issue relates to the stack level in which test scripts are
 executed.  Tests nested within other tests may be executed at the same
 stack level as the outermost test.  For example, in the following code: 
+.PP
 .CS
 \fBtest\fR level-1.1 {level 1} {
     -body {
@@ -1035,27 +1091,38 @@ stack level as the outermost test.  For example, in the following code:
     }
 }
 .CE
+.PP
 any script executed in level-2.1 may be executed at the same stack
 level as the script defined for level-1.1.  
 .PP
-In addition, while two [\fBtest\fR]s have been run, results will only
-be reported by [\fBcleanupTests\fR] for tests at the same level as
+In addition, while two \fBtest\fRs have been run, results will only
+be reported by \fBcleanupTests\fR for tests at the same level as
 test level-1.1.  However, test results for all tests run prior to
 level-1.1 will be available when test level-2.1 runs.  What this
 means is that if you try to access the test results for test level-2.1,
-it will may say that 'm' tests have run, 'n' tests have
-been skipped, 'o' tests have passed and 'p' tests have failed,
-where 'm', 'n', 'o', and 'p' refer to tests that were run at the
-same test level as test level-1.1. 
+it will may say that
+.QW m
+tests have run,
+.QW n
+tests have been skipped,
+.QW o
+tests have passed and
+.QW p
+tests have failed, where
+.QW m ,
+.QW n ,
+.QW o ,
+and
+.QW p
+refer to tests that were run at the same test level as test level-1.1.
 .PP
 Implementation of output and error comparison in the test command
 depends on usage of ::puts in your application code.  Output is
 intercepted by redefining the ::puts command while the defined test
 script is being run.  Errors thrown by C procedures or printed
 directly from C applications will not be caught by the test command.
-Therefore, usage of the \fB-output\fR and \fB-errorOutput\fR
-options to [\fBtest\fR] is useful only for pure Tcl applications
-that use [\fB::puts\fR] to produce output. 
-
+Therefore, usage of the \fB\-output\fR and \fB\-errorOutput\fR
+options to \fBtest\fR is useful only for pure Tcl applications
+that use \fB::puts\fR to produce output. 
 .SH KEYWORDS
 test, test harness, test suite
diff --git a/doc/tclvars.n b/doc/tclvars.n
index b4cf9e2..885de34 100644
--- a/doc/tclvars.n
+++ b/doc/tclvars.n
@@ -12,7 +12,6 @@
 .SH NAME
 tclvars \- Variables used by Tcl
 .BE
-
 .SH DESCRIPTION
 .PP
 The following global variables are created and managed automatically
@@ -25,7 +24,7 @@ whose elements are the environment variables for the process.
 Reading an element will return the value of the corresponding
 environment variable.
 Setting an element of the array will modify the corresponding
-environment variable or create a new one if it doesn't already
+environment variable or create a new one if it does not already
 exist.
 Unsetting an element of \fBenv\fR will remove the corresponding
 environment variable.
@@ -35,31 +34,74 @@ If the entire \fBenv\fR array is unset then Tcl will stop
 monitoring \fBenv\fR accesses and will not update environment
 variables.
 .RS
-.VS 8.0 
+.PP
 Under Windows, the environment variables PATH and COMSPEC in any
 capitalization are converted automatically to upper case.  For instance, the
-PATH variable could be exported by the operating system as ``path'',
-``Path'', ``PaTh'', etc., causing otherwise simple Tcl code to have to
+PATH variable could be exported by the operating system as
+.QW path ,
+.QW Path ,
+.QW PaTh ,
+etc., causing otherwise simple Tcl code to have to
 support many special cases.  All other environment variables inherited by
 Tcl are left unmodified.  Setting an env array variable to blank is the
 same as unsetting it as this is the behavior of the underlying Windows OS.
 It should be noted that relying on an existing and empty environment variable
-won't work on windows and is discouraged for cross-platform usage.
+will not work on Windows and is discouraged for cross-platform usage.
+.PP
+The following elements of \fBenv\fR are special to Tcl:
+.TP
+\fBenv(HOME)\fR
+.
+This environment variable, if set, gives the location of the directory
+considered to be the current user's home directory, and to which a
+call of \fBcd\fR without arguments or with just
+.QW ~
+as an argument will change into. Most platforms set this correctly by
+default; it does not normally need to be set by user code.
+.TP
+\fBenv(TCL_LIBRARY)\fR
+.
+If set, then it specifies the location of the directory containing
+library scripts (the value of this variable will be
+assigned to the \fBtcl_library\fR variable and therefore returned by
+the command \fBinfo library\fR).  If this variable is not set then
+a default value is used.
+.RS
+.PP
+Note that this environment variable should \fInot\fR normally be set.
+.RE
+.TP
+\fBenv(TCLLIBPATH)\fR
+.
+If set, then it must contain a valid Tcl list giving directories to
+search during auto-load operations.  Directories must be specified in 
+Tcl format, using
+.QW /
+as the path separator, regardless of platform.
+This variable is only used when initializing the \fBauto_path\fR variable.
+.TP
+\fBenv(TCL_INTERP_DEBUG_FRAME)\fR
+.
+If existing, it has the same effect as running \fBinterp debug {} -frame 1\fR
+as the very first command of each new Tcl interpreter.
 .RE
 .TP
 \fBerrorCode\fR
-After an error has occurred, this variable will be set to hold
-a list value representing additional information about the error
+This variable holds the value of the \fB\-errorcode\fR return option
+set by the most recent error that occurred in this interpreter.
+This list value represents additional information about the error
 in a form that is easy to process with programs.
 The first element of the list identifies a general class of
 errors, and determines the format of the rest of the list.
-The following formats for \fBerrorCode\fR are used by the
-Tcl core; individual applications may define additional formats.
+The following formats for \fB\-errorcode\fR return options
+are used by the Tcl core; individual applications may define
+additional formats.
 .RS
 .TP
 \fBARITH\fI code msg\fR
+.
 This format is used when an arithmetic error occurs (e.g. an attempt
-to divide by zero in the \fBexpr\fR command).
+to divide zero by zero in the \fBexpr\fR command).
 \fICode\fR identifies the precise error and \fImsg\fR provides a
 human-readable description of the error.  \fICode\fR will be either
 DIVZERO (for an attempt to divide by zero),
@@ -67,62 +109,77 @@ DOMAIN (if an argument is outside the domain of a function, such as acos(\-3)),
 IOVERFLOW (for integer overflow),
 OVERFLOW (for a floating-point overflow),
 or UNKNOWN (if the cause of the error cannot be determined).
+.RS
+.PP
+Detection of these errors depends in part on the underlying hardware
+and system libraries.
+.RE
 .TP
 \fBCHILDKILLED\fI pid sigName msg\fR
 This format is used when a child process has been killed because of
-a signal.  The second element of \fBerrorCode\fR will be the
-process's identifier (in decimal).
-The third element will be the symbolic name of the signal that caused
+a signal.  The \fIpid\fR element will be the process's identifier (in decimal).
+The \fIsigName\fR element will be the symbolic name of the signal that caused
 the process to terminate; it will be one of the names from the
 include file signal.h, such as \fBSIGPIPE\fR.
-The fourth element will be a short human-readable message
-describing the signal, such as ``write on pipe with no readers''
+The \fImsg\fR element will be a short human-readable message
+describing the signal, such as
+.QW "write on pipe with no readers"
 for \fBSIGPIPE\fR.
 .TP
 \fBCHILDSTATUS\fI pid code\fR
 This format is used when a child process has exited with a non-zero
-exit status.  The second element of \fBerrorCode\fR will be the
-process's identifier (in decimal) and the third element will be the exit
+exit status.  The \fIpid\fR element will be the
+process's identifier (in decimal) and the \fIcode\fR element will be the exit
 code returned by the process (also in decimal).
 .TP
 \fBCHILDSUSP\fI pid sigName msg\fR
 This format is used when a child process has been suspended because
 of a signal.
-The second element of \fBerrorCode\fR will be the process's identifier,
-in decimal.
-The third element will be the symbolic name of the signal that caused
+The \fIpid\fR element will be the process's identifier, in decimal.
+The \fIsigName\fR element will be the symbolic name of the signal that caused
 the process to suspend; this will be one of the names from the
 include file signal.h, such as \fBSIGTTIN\fR.
-The fourth element will be a short human-readable message
-describing the signal, such as ``background tty read''
+The \fImsg\fR element will be a short human-readable message
+describing the signal, such as
+.QW "background tty read"
 for \fBSIGTTIN\fR.
 .TP
 \fBNONE\fR
 This format is used for errors where no additional information is
 available for an error besides the message returned with the
-error.  In these cases \fBerrorCode\fR will consist of a list
-containing a single element whose contents are \fBNONE\fR.
+error.  In these cases the \fB\-errorcode\fR return option
+will consist of a list containing a single element whose
+contents are \fBNONE\fR.
 .TP
 \fBPOSIX \fIerrName msg\fR
-If the first element of \fBerrorCode\fR is \fBPOSIX\fR, then
+If the first element is \fBPOSIX\fR, then
 the error occurred during a POSIX kernel call.
-The second element of the list will contain the symbolic name
+The \fIerrName\fR element will contain the symbolic name
 of the error that occurred, such as \fBENOENT\fR; this will
 be one of the values defined in the include file errno.h.
-The third element of the list will be a human-readable
+The \fImsg\fR element will be a human-readable
 message corresponding to \fIerrName\fR, such as
-``no such file or directory'' for the \fBENOENT\fR case.
+.QW "no such file or directory"
+for the \fBENOENT\fR case.
 .PP
-To set \fBerrorCode\fR, applications should use library
-procedures such as \fBTcl_SetErrorCode\fR and \fBTcl_PosixError\fR,
-or they may invoke the \fBerror\fR command.
-If one of these methods hasn't been used, then the Tcl
-interpreter will reset the variable to \fBNONE\fR after
+To set the \fB\-errorcode\fR return option, applications should use library
+procedures such as \fBTcl_SetObjErrorCode\fR, \fBTcl_SetReturnOptions\fR,
+and \fBTcl_PosixError\fR, or they may invoke the \fB\-errorcode\fR
+option of the \fBreturn\fR command.
+If none of these methods for setting the error code has been used,
+the Tcl interpreter will reset the variable to \fBNONE\fR after
 the next error.
 .RE
+.\" .TP
+.\" \fBTCL\fR ...
+.\" .
+.\" Indicates some sort of problem generated in relation to Tcl itself,
+.\" e.g. a failure to look up a channel or variable.
 .TP
 \fBerrorInfo\fR
-After an error has occurred, this string will contain one or more lines
+This variable holds the value of the \fB\-errorinfo\fR return option
+set by the most recent error that occurred in this interpreter.
+This string value will contain one or more lines
 identifying the Tcl commands and procedures that were being executed
 when the most recent error occurred.
 Its contents take the form of a stack trace showing the various
@@ -144,19 +201,19 @@ is created by searching several different directories until one is
 found that contains an appropriate Tcl startup script.
 If the \fBTCL_LIBRARY\fR environment variable exists, then
 the directory it names is checked first.
-If \fBTCL_LIBRARY\fR isn't set or doesn't refer to an appropriate
+If \fBTCL_LIBRARY\fR is not set or doesn't refer to an appropriate
 directory, then Tcl checks several other directories based on a
 compiled-in default location, the location of the binary containing
 the application, and the current working directory.
 .TP
 \fBtcl_patchLevel\fR
+.
 When an interpreter is created Tcl initializes this variable to
 hold a string giving the current patch level for Tcl, such as
-\fB7.3p2\fR for Tcl 7.3 with the first two official patches, or
-\fB7.4b4\fR for the fourth beta release of Tcl 7.4.
+\fB8.4.16\fR for Tcl 8.4 with the first sixteen official patches, or
+\fB8.5b3\fR for the third beta release of Tcl 8.5.
 The value of this variable is returned by the \fBinfo patchlevel\fR
 command.
-.VS 8.0 br
 .TP
 \fBtcl_pkgPath\fR
 This variable holds a list of directories indicating where packages are
@@ -169,29 +226,26 @@ subdirectory of one of the entries in \fB$tcl_pkgPath\fR. The directories
 in \fB$tcl_pkgPath\fR are included by default in the \fBauto_path\fR
 variable, so they and their immediate subdirectories are automatically
 searched for packages during \fBpackage require\fR commands.  Note:
-\fBtcl_pkgPath\fR it not intended to be modified by the application.  Its
+\fBtcl_pkgPath\fR is not intended to be modified by the application.  Its
 value is added to \fBauto_path\fR at startup; changes to \fBtcl_pkgPath\fR
 are not reflected in \fBauto_path\fR.  If you want Tcl to search additional
 directories for packages you should add the names of those directories to
 \fBauto_path\fR, not \fBtcl_pkgPath\fR.
-.VE
 .TP
 \fBtcl_platform\fR
 This is an associative array whose elements contain information about
 the platform on which the application is running, such as the name of
 the operating system, its current release number, and the machine's
 instruction set.  The elements listed below will always
-be defined, but they may have empty strings as values if Tcl couldn't
+be defined, but they may have empty strings as values if Tcl could not
 retrieve any relevant information.  In addition, extensions
 and applications may add additional values to the array.  The
 predefined elements are:
 .RS
-.VS
 .TP
 \fBbyteOrder\fR
 The native byte order of this machine: either \fBlittleEndian\fR or
 \fBbigEndian\fR. 
-.VE
 .TP
 \fBdebug\fR
 If this variable exists, then the interpreter was compiled with and linked
@@ -207,7 +261,7 @@ is the value returned by \fBuname -m\fR.
 .TP
 \fBos\fR 
 The name of the operating system running on this machine,
-such as \fBWindows 95\fR, \fBWindows NT\fR, \fBMacOS\fR, or \fBSunOS\fR.
+such as \fBWindows 95\fR, \fBWindows NT\fR, or \fBSunOS\fR.
 On UNIX machines, this is the value returned by \fBuname -s\fR.
 On Windows 95 and Windows 98, the value returned will be \fBWindows
 95\fR to provide better backwards compatibility to Windows 95; to
@@ -220,7 +274,7 @@ Windows 95, the version will be 4.0; on Windows 98, the version will
 be 4.10.
 .TP
 \fBplatform\fR
-Either \fBwindows\fR or \fBunix\fR.  This identifies the
+Either \fBwindows\fR, or \fBunix\fR.  This identifies the
 general operating environment of the machine.
 .TP
 \fBthreaded\fR
@@ -234,30 +288,68 @@ This comes from the USER or LOGNAME environment variable on Unix,
 and the value from GetUserName on Windows.
 .TP
 \fBwordSize\fR
-.VS 8.4
 This gives the size of the native-machine word in bytes (strictly, it
 is same as the result of evaluating \fIsizeof(long)\fR in C.)
-.VE 8.4
+.TP
+\fBpointerSize\fR
+This gives the size of the native-machine pointer in bytes (strictly, it
+is same as the result of evaluating \fIsizeof(void*)\fR in C.)
 .RE
 .TP
 \fBtcl_precision\fR
-.VS
+.
 This variable controls the number of digits to generate
 when converting floating-point values to strings.  It defaults
-to 12.
-17 digits is ``perfect'' for IEEE floating-point in that it allows
+to 0.  \fIApplications should not change this value;\fR it is
+provided for compatibility with legacy code.
+.PP
+.RS
+The default value of 0 is special, meaning that Tcl should
+convert numbers using as few digits as possible while still
+distinguishing any floating point number from its nearest
+neighbours.  It differs from using an arbitrarily high value
+for \fItcl_precision\fR in that an inexact number like \fI1.4\fR
+will convert as \fI1.4\fR rather than \fI1.3999999999999999\fR
+even though the latter is nearer to the exact value of the
+binary number.
+.RE
+.PP
+.RS
+If \fBtcl_precision\fR is not zero, then when Tcl converts a floating
+point number, it creates a decimal representation of at most 
+\fBtcl_precision\fR significant digits; the result may be shorter if
+the shorter result represents the original number exactly. If no
+result of at most \fBtcl_precision\fR digits is an exact representation
+of the original number, the one that is closest to the original
+number is chosen.
+If the original number lies precisely between two equally accurate
+decimal representations, then the one with an even value for the least
+significant digit is chosen; for instance, if \fBtcl_precision\fR is 3, then
+0.3125 will convert to 0.312, not 0.313, while 0.6875 will convert to
+0.688, not 0.687. Any string of trailing zeroes that remains is trimmed.
+.RE
+.PP
+.RS
+a \fBtcl_precision\fR value of 17 digits is
+.QW perfect
+for IEEE floating-point in that it allows
 double-precision values to be converted to strings and back to
-binary with no loss of information.  However, using 17 digits prevents
-any rounding, which produces longer, less intuitive results.  For example,
-\fBexpr 1.4\fR returns 1.3999999999999999 with \fBtcl_precision\fR
-set to 17, vs. 1.4 if \fBtcl_precision\fR is 12.
+binary with no loss of information. For this reason, you will often
+see it as a value in legacy code that must run on Tcl versions before
+8.5. It is no longer recommended; as noted above, a zero value is the
+preferred method.
+.RE
+.PP
 .RS
-All interpreters in a process share a single \fBtcl_precision\fR value:
+All interpreters in a thread share a single \fBtcl_precision\fR value:
 changing it in one interpreter will affect all other interpreters as
-well.  However, safe interpreters are not allowed to modify the
+well.  Safe interpreters are not allowed to modify the
 variable.
 .RE
-.VE
+.PP
+.RS
+Valid values for \fBtcl_precision\fR range from 0 to 17.
+.RE
 .TP
 \fBtcl_rcFileName\fR
 This variable is used during initialization to indicate the name of a
@@ -278,11 +370,11 @@ Setting it to 2 generates a detailed listing in stdout of the
 bytecode instructions emitted during every compilation.
 This variable is useful in
 tracking down suspected problems with the Tcl compiler.
-It is also occasionally useful when converting
-existing code to use Tcl8.0.
 .PP
+.RS
 This variable and functionality only exist if
 \fBTCL_COMPILE_DEBUG\fR was defined during Tcl's compilation.
+.RE
 .TP
 \fBtcl_traceExec\fR
 The value of this variable can be set to control
@@ -303,26 +395,30 @@ of bytecode instructions are not shown.
 Setting this variable is useful in
 tracking down suspected problems with the bytecode compiler
 and interpreter.
-It is also occasionally useful when converting
-code to use Tcl8.0.
 .PP
+.RS
 This variable and functionality only exist if
 \fBTCL_COMPILE_DEBUG\fR was defined during Tcl's compilation.
+.RE
 .TP
 \fBtcl_wordchars\fR
 The value of this variable is a regular expression that can be set to
-control what are considered ``word'' characters, for instances like
+control what are considered
+.QW word
+characters, for instances like
 selecting a word by double-clicking in text in Tk.  It is platform
-dependent.  On Windows, it defaults to \fB\\S\fR, meaning anything
-but a Unicode space character.  Otherwise it defaults to \fB\\w\fR,
+dependent.  On Windows, it defaults to \fB\eS\fR, meaning anything
+but a Unicode space character.  Otherwise it defaults to \fB\ew\fR,
 which is any Unicode word character (number, letter, or underscore).
 .TP
 \fBtcl_nonwordchars\fR
 The value of this variable is a regular expression that can be set to
-control what are considered ``non-word'' characters, for instances like
+control what are considered
+.QW non-word
+characters, for instances like
 selecting a word by double-clicking in text in Tk.  It is platform
-dependent.  On Windows, it defaults to \fB\\s\fR, meaning any Unicode space
-character.  Otherwise it defaults to \fB\\W\fR, which is anything but a
+dependent.  On Windows, it defaults to \fB\es\fR, meaning any Unicode space
+character.  Otherwise it defaults to \fB\eW\fR, which is anything but a
 Unicode word character (number, letter, or underscore).
 .TP
 \fBtcl_version\fR
@@ -354,15 +450,13 @@ Contains 1 if \fBtclsh\fR or \fBwish\fR is running interactively (no
 script was specified and standard input is a terminal-like device), 0
 otherwise.
 .PP
-The \fBwish\fR executably additionally specifies the following global
+The \fBwish\fR executable additionally specifies the following global
 variable:
 .TP 6
 \fBgeometry\fR
 If set, contains the user-supplied geometry specification to use for
 the main Tk window.
-
 .SH "SEE ALSO"
 eval(n), tclsh(1), wish(1)
-
 .SH KEYWORDS
 arithmetic, bytecode, compiler, error, environment, POSIX, precision, subprocess, variables
diff --git a/doc/tell.n b/doc/tell.n
index 559f709..282cae5 100644
--- a/doc/tell.n
+++ b/doc/tell.n
@@ -17,21 +17,17 @@ tell \- Return current access position for an open channel
 
 .SH DESCRIPTION
 .PP
-.VS 8.1
 Returns an integer string giving the current access position in
 \fIchannelId\fR.  This value returned is a byte offset that can be passed to
 \fBseek\fR in order to set the channel to a particular position.  Note
 that this value is in terms of bytes, not characters like \fBread\fR.
-.VE 8.1
 The value returned is -1 for channels that do not support
 seeking.
 .PP
-.VS
 \fIChannelId\fR must be an identifier for an open channel such as a
 Tcl standard channel (\fBstdin\fR, \fBstdout\fR, or \fBstderr\fR),
 the return value from an invocation of \fBopen\fR or \fBsocket\fR, or
 the result of a channel creation command provided by a Tcl extension.
-.VE
 .SH EXAMPLE
 Read a line from a file channel only if it starts with \fBfoobar\fR:
 .CS
diff --git a/doc/time.n b/doc/time.n
index 38ae49a..bdd0786 100644
--- a/doc/time.n
+++ b/doc/time.n
@@ -18,7 +18,7 @@ time \- Time the execution of a script
 .SH DESCRIPTION
 .PP
 This command will call the Tcl interpreter \fIcount\fR
-times to evaluate \fIscript\fR (or once if \fIcount\fR isn't
+times to evaluate \fIscript\fR (or once if \fIcount\fR is not
 specified).  It will then return a string of the form
 .CS
 \fB503 microseconds per iteration\fR
diff --git a/doc/tm.n b/doc/tm.n
new file mode 100644
index 0000000..aef06dd
--- /dev/null
+++ b/doc/tm.n
@@ -0,0 +1,293 @@
+'\"
+'\" Copyright (c) 2004-2010 Andreas Kupries <andreas_kupries@users.sourceforge.net>
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH tm n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+tm \- Facilities for locating and loading of Tcl Modules
+.SH SYNOPSIS
+.nf
+\fB::tcl::tm::path add \fR?\fIpath\fR...?
+\fB::tcl::tm::path remove \fR?\fIpath\fR...?
+\fB::tcl::tm::path list\fR
+\fB::tcl::tm::roots \fR?\fIpath\fR...?
+.fi
+.BE
+.SH DESCRIPTION
+This document describes the facilities for locating and loading Tcl
+Modules (see \fBMODULE DEFINITION\fR for the definition of a Tcl Module).
+The following commands are supported:
+.TP
+\fB::tcl::tm::path add \fR?\fIpath\fR...?
+.
+The paths are added at the head to the list of module paths, in order
+of appearance. This means that the last argument ends up as the new
+head of the list.
+.RS
+.PP
+The command enforces the restriction that no path may be an ancestor
+directory of any other path on the list. If any of the new paths
+violates this restriction an error will be raised, before any of the
+paths have been added. In other words, if only one path argument
+violates the restriction then none will be added.
+.PP
+If a path is already present as is, no error will be raised and no
+action will be taken.
+.PP
+Paths are searched later in the order of their appearance in the
+list. As they are added to the front of the list they are searched in
+reverse order of addition. In other words, the paths added last are
+looked at first.
+.RE
+.TP
+\fB::tcl::tm::path remove \fR?\fIpath\fR...?
+.
+Removes the paths from the list of module paths. The command silently
+ignores all paths which are not on the list.
+.TP
+\fB::tcl::tm::path list\fR
+.
+Returns a list containing all registered module paths, in the order
+that they are searched for modules.
+.TP
+\fB::tcl::tm::roots \fR?\fIpath\fR...?
+.
+Similar to \fBpath add\fR, and layered on top of it. This command
+takes a list of paths, extends each with
+.QW "\fBtcl\fIX\fB/site-tcl\fR" ,
+and
+.QW "\fBtcl\fIX\fB/\fIX\fB.\fIy\fR" ,
+for major version \fIX\fR of the
+Tcl interpreter and minor version \fIy\fR less than or equal to the
+minor version of the interpreter, and adds the resulting set of paths
+to the list of paths to search.
+.RS
+.PP
+This command is used internally by the system to set up the
+system-specific default paths.
+.PP
+The command has been exposed to allow a build system to define
+additional root paths beyond those described by this document.
+.RE
+.SH "MODULE DEFINITION"
+A Tcl Module is a Tcl Package contained in a single file, and no other
+files required by it. This file has to be \fBsource\fRable. In other
+words, a Tcl Module is always imported via:
+.CS
+source module_file
+.CE
+.PP
+The \fBload\fR command is not directly used. This restriction is not
+an actual limitation, as some may believe.
+Ever since 8.4 the Tcl \fBsource\fR command reads only until the first
+^Z character. This allows us to combine an arbitrary Tcl script with
+arbitrary binary data into one file, where the script processes the
+attached data in any it chooses to fully import and activate the
+package.
+.PP
+The name of a module file has to match the regular expression:
+.CS
+([_[:alpha:]][:_[:alnum:]]*)-([[:digit:]].*)\e.tm
+.CE
+.PP
+The first capturing parentheses provides the name of the package, the
+second clause its version. In addition to matching the pattern, the
+extracted version number must not raise an error when used in the
+command:
+.CS
+package vcompare $version 0
+.CE
+.PP
+.SH "FINDING MODULES"
+The directory tree for storing Tcl modules is separate from other
+parts of the filesystem and independent of \fBauto_path\fR.
+.PP
+Tcl Modules are searched for in all directories listed in the result
+of the command \fB::tcl::tm::path list\fR.
+This is called the \fIModule path\fR. Neither the \fBauto_path\fR nor
+the \fBtcl_pkgPath\fR variables are used.
+All directories on the module path have to obey one restriction:
+.RS
+.PP
+For any two directories, neither is an ancestor directory of the
+other.
+.RE
+.PP
+This is required to avoid ambiguities in package naming. If for
+example the two directories
+.QW "\fIfoo/\fR"
+and
+.QW "\fIfoo/cool\fR"
+were on
+the path a package named \fBcool::ice\fR could be found via the
+names \fBcool::ice\fR or \fBice\fR, the latter potentially
+obscuring a package named \fBice\fR, unqualified.
+.PP
+Before the search is started, the name of the requested package is
+translated into a partial path, using the following algorithm:
+.RS
+.PP
+All occurrences of
+.QW "\fB::\fR"
+in the package name are replaced by
+the appropriate directory separator character for the platform we are
+on. On Unix, for example, this is
+.QW "\fB/\fR" .
+.RE
+.PP
+Example:
+.RS
+.PP
+The requested package is \fBencoding::base64\fR. The generated
+partial path is
+.QW "\fIencoding/base64\fR" .
+.RE
+.PP
+After this translation the package is looked for in all module paths,
+by combining them one-by-one, first to last with the partial path to
+form a complete search pattern. Note that the search algorithm rejects
+all files where the filename does not match the regular expression
+given in the section \fBMODULE DEFINITION\fR. For the remaining
+files \fIprovide scripts\fR are generated and added to the package
+ifneeded database.
+.PP
+The algorithm falls back to the previous unknown handler when none of
+the found module files satisfy the request. If the request was
+satisfied the fall-back is ignored.
+.PP
+Note that packages in module form have \fIno\fR control over the
+\fIindex\fR and \fIprovide script\fRs entered into the package
+database for them.
+For a module file \fBMF\fR the \fIindex script\fR is always:
+.CS
+package ifneeded \fBPNAME PVERSION\fR [list source \fBMF\fR]
+.CE
+and the \fIprovide script\fR embedded in the above is:
+.CS
+source \fBMF\fR
+.CE
+.PP
+Both package name \fBPNAME\fR and package version \fBPVERSION\fR are
+extracted from the filename \fBMF\fR according to the definition
+below:
+.CS
+\fBMF\fR = /module_path/\fBPNAME\(fm\fR-\fBPVERSION\fR.tm
+.CE
+.PP
+Where \fBPNAME\(fm\fR is the partial path of the module as defined in
+section \fBFINDING MODULES\fR, and translated into \fBPNAME\fR by
+changing all directory separators to
+.QW "\fB::\fR" ,
+and \fBmodule_path\fR is the path (from the list of paths to search)
+that we found the module file under.
+.PP
+Note also that we are here creating a connection between package names
+and paths. Tcl is case-sensitive when it comes to comparing package
+names, but there are filesystems which are not, like NTFS. Luckily
+these filesystems do store the case of the name, despite not using the
+information when comparing.
+.PP
+Given the above we allow the names for packages in Tcl modules to have
+mixed-case, but also require that there are no collisions when
+comparing names in a case-insensitive manner. In other words, if a
+package \fBFoo\fR is deployed in the form of a Tcl Module,
+packages like \fBfoo\fR, \fBfOo\fR, etc. are not allowed
+anymore.
+.SH "DEFAULT PATHS"
+The default list of paths on the module path is computed by a
+\fBtclsh\fR as follows, where \fIX\fR is the major version of the Tcl
+interpreter and \fIy\fR is less than or equal to the minor version of
+the Tcl interpreter.
+.PP
+All the default paths are added to the module path, even those paths
+which do not exist. Non-existent paths are filtered out during actual
+searches. This enables a user to create one of the paths searched when
+needed and all running applications will automatically pick up any
+modules placed in them.
+.PP
+The paths are added in the order as they are listed below, and for
+lists of paths defined by an environment variable in the order they
+are found in the variable.
+.SS "SYSTEM SPECIFIC PATHS"
+.TP
+\fBfile normalize [info library]/../tcl\fIX\fB/\fIX\fB.\fIy\fR
+.
+In other words, the interpreter will look into a directory specified
+by its major version and whose minor versions are less than or equal
+to the minor version of the interpreter.
+.RS
+.PP
+For example for Tcl 8.4 the paths searched are:
+.CS
+\fB[info library]/../tcl8/8.4\fR
+\fB[info library]/../tcl8/8.3\fR
+\fB[info library]/../tcl8/8.2\fR
+\fB[info library]/../tcl8/8.1\fR
+\fB[info library]/../tcl8/8.0\fR
+.CE
+.PP
+This definition assumes that a package defined for Tcl \fIX\fB.\fIy\fR
+can also be used by all interpreters which have the same major number
+\fIX\fR and a minor number greater than \fIy\fR.
+.RE
+.TP
+\fBfile normalize EXEC/tcl\fIX\fB/\fIX\fB.\fIy\fR
+.
+Where \fBEXEC\fR is \fBfile normalize [info nameofexecutable]/../lib\fR
+or \fBfile normalize [::tcl::pkgconfig get libdir,runtime]\fR
+.RS
+.PP
+This sets of paths is handled equivalently to the set coming before,
+except that it is anchored in \fBEXEC_PREFIX\fR.
+For a build with \fBPREFIX\fR = \fBEXEC_PREFIX\fR the two sets are
+identical.
+.RE
+.SS "SITE SPECIFIC PATHS"
+.TP
+\fBfile normalize [info library]/../tcl\fIX\fB/site-tcl\fR
+.
+Note that this is always a single entry because \fIX\fR is always a
+specific value (the current major version of Tcl).
+.SS "USER SPECIFIC PATHS"
+.TP
+\fB$::env(TCL\fIX\fB_\fIy\fB_TM_PATH)\fR
+.
+A list of paths, separated by either \fB:\fR (Unix) or \fB;\fR
+(Windows). This is user and site specific as this environment variable
+can be set not only by the user's profile, but by system configuration
+scripts as well.
+.TP
+\fB$::env(TCL\fIX\fB.\fIy\fB_TM_PATH)\fR
+.
+Same meaning and content as the previous variable. However the use of
+dot '.' to separate major and minor version number makes this name
+less to non-portable and its use is discouraged. Support of this
+variable has been kept only for backward compatibility with the
+original specification, i.e. TIP 189.
+.PP
+These paths are seen and therefore shared by all Tcl shells in the
+\fB$::env(PATH)\fR of the user.
+.PP
+Note that \fIX\fR and \fIy\fR follow the general rules set out
+above. In other words, Tcl 8.4, for example, will look at these 5
+environment variables:
+.CS
+\fB$::env(TCL8.4_TM_PATH)\fR  \fB$::env(TCL8_4_TM_PATH)\fR
+\fB$::env(TCL8.3_TM_PATH)\fR  \fB$::env(TCL8_3_TM_PATH)\fR
+\fB$::env(TCL8.2_TM_PATH)\fR  \fB$::env(TCL8_2_TM_PATH)\fR
+\fB$::env(TCL8.1_TM_PATH)\fR  \fB$::env(TCL8_1_TM_PATH)\fR
+\fB$::env(TCL8.0_TM_PATH)\fR  \fB$::env(TCL8_0_TM_PATH)\fR
+.CE
+.SH "SEE ALSO"
+package(n), Tcl Improvement Proposal #189
+.QW "\fITcl Modules\fR"
+(online at http://tip.tcl.tk/189.html), Tcl Improvement Proposal #190
+.QW "\fIImplementation Choices for Tcl Modules\fR"
+(online at http://tip.tcl.tk/190.html)
+.SH "KEYWORDS"
+modules, package
diff --git a/doc/trace.n b/doc/trace.n
index 552b269..c928856 100644
--- a/doc/trace.n
+++ b/doc/trace.n
@@ -15,52 +15,57 @@ trace \- Monitor variable accesses, command usages and command executions
 .SH SYNOPSIS
 \fBtrace \fIoption\fR ?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 This command causes Tcl commands to be executed whenever certain operations are
-invoked.  The legal \fIoption\fR's (which may be abbreviated) are:
+invoked.  The legal \fIoption\fRs (which may be abbreviated) are:
 .TP
 \fBtrace add \fItype name ops ?args?\fR
 Where \fItype\fR is \fBcommand\fR, \fBexecution\fR, or \fBvariable\fR.
 .RS
 .TP
-\fBtrace add command\fR \fIname ops command\fR
-Arrange for \fIcommand\fR to be executed whenever command \fIname\fR
-is modified in one of the ways given by the list \fIops\fR.  \fIName\fR will be
-resolved using the usual namespace resolution rules used by
-procedures.  If the command does not exist, an error will be thrown.
+\fBtrace add command\fR \fIname ops commandPrefix\fR
+.
+Arrange for \fIcommandPrefix\fR to be executed (with additional arguments)
+whenever command \fIname\fR is modified in one of the ways given by the list
+\fIops\fR. \fIName\fR will be resolved using the usual namespace resolution
+rules used by commands. If the command does not exist, an error will be
+thrown.
 .RS
 .PP
 \fIOps\fR indicates which operations are of interest, and is a list of
 one or more of the following items:
 .TP
 \fBrename\fR
-Invoke \fIcommand\fR whenever the command is renamed.  Note that
-renaming to the empty string is considered deletion, and will not
-be traced with '\fBrename\fR'.
+.
+Invoke \fIcommandPrefix\fR whenever the traced command is renamed.  Note that
+renaming to the empty string is considered deletion, and will not be traced
+with
+.QW \fBrename\fR .
 .TP
 \fBdelete\fR
-Invoke \fIcommand\fR when the command is deleted.  Commands can be
-deleted explicitly by using the \fBrename\fR command to rename the
-command to an empty string.  Commands are also deleted when the
-interpreter is deleted, but traces will not be invoked because there is no
-interpreter in which to execute them.
+.
+Invoke \fIcommandPrefix\fR when the traced command is deleted. Commands can be
+deleted explicitly by using the \fBrename\fR command to rename the command to
+an empty string. Commands are also deleted when the interpreter is deleted,
+but traces will not be invoked because there is no interpreter in which to
+execute them.
 .PP
-When the trace triggers, depending on the operations being traced, a 
-number of arguments are appended to \fIcommand\fR so that the actual 
-command is as follows:
+When the trace triggers, depending on the operations being traced, a number of
+arguments are appended to \fIcommandPrefix\fR so that the actual command is as
+follows:
 .CS
-\fIcommand oldName newName op\fR
+\fIcommandPrefix oldName newName op\fR
 .CE
-\fIOldName\fR and \fInewName\fR give the traced command's current
-(old) name, and the name to which it is being renamed (the empty
-string if this is a 'delete' operation).
+\fIOldName\fR and \fInewName\fR give the traced command's current (old) name,
+and the name to which it is being renamed (the empty string if this is a
+.QW delete
+operation).
 \fIOp\fR indicates what operation is being performed on the
 command, and is one of \fBrename\fR or \fBdelete\fR as
 defined above.  The trace operation cannot be used to stop a command
 from being deleted.  Tcl will always remove the command once the trace
-is complete.  Recursive renaming or deleting will not cause further traces 
+is complete.  Recursive renaming or deleting will not cause further traces
 of the same type to be evaluated, so a delete trace which itself
 deletes the command, or a rename trace which itself renames the
 command will not cause further trace evaluations to occur.
@@ -68,90 +73,100 @@ Both \fIoldName\fR and \fInewName\fR are fully qualified with any namespace(s)
 in which they appear.
 .RE
 .TP
-\fBtrace add execution\fR \fIname ops command\fR
-Arrange for \fIcommand\fR to be executed whenever command \fIname\fR
-is executed, with traces occurring at the points indicated by the list
-\fIops\fR.  \fIName\fR will be
-resolved using the usual namespace resolution rules used by
-procedures.  If the command does not exist, an error will be thrown.
+\fBtrace add execution\fR \fIname ops commandPrefix\fR
+.
+Arrange for \fIcommandPrefix\fR to be executed (with additional arguments)
+whenever command \fIname\fR is executed, with traces occurring at the points
+indicated by the list \fIops\fR.  \fIName\fR will be resolved using the usual
+namespace resolution rules used by commands.  If the command does not exist,
+an error will be thrown.
 .RS
 .PP
 \fIOps\fR indicates which operations are of interest, and is a list of
 one or more of the following items:
 .TP
 \fBenter\fR
-Invoke \fIcommand\fR whenever the command \fIname\fR is executed,
+Invoke \fIcommandPrefix\fR whenever the command \fIname\fR is executed,
 just before the actual execution takes place.
 .TP
 \fBleave\fR
-Invoke \fIcommand\fR whenever the command \fIname\fR is executed,
+Invoke \fIcommandPrefix\fR whenever the command \fIname\fR is executed,
 just after the actual execution takes place.
 .TP
 \fBenterstep\fR
-Invoke \fIcommand\fR for every Tcl command which is executed 
-inside the procedure \fIname\fR, just before the actual execution
-takes place.  For example if we have 'proc foo {} { puts "hello" }',
-then an \fIenterstep\fR trace would be 
-invoked just before \fIputs "hello"\fR is executed.
-Setting an \fIenterstep\fR trace on a \fIcommand\fR
-will not result in an error and is simply ignored.
+.
+Invoke \fIcommandPrefix\fR for every Tcl command which is executed from the
+start of the execution of the procedure \fIname\fR until that
+procedure finishes. \fICommandPrefix\fR is invoked just before the actual
+execution of the Tcl command being reported takes place.  For example
+if we have
+.QW "proc foo {} { puts \N'34'hello\N'34' }" ,
+then an \fIenterstep\fR trace would be invoked just before
+.QW "\fIputs \N'34'hello\N'34'\fR"
+is executed.
+Setting an \fIenterstep\fR trace on a command \fIname\fR that does not refer
+to a procedure will not result in an error and is simply ignored.
 .TP
 \fBleavestep\fR
-Invoke \fIcommand\fR for every Tcl command which is executed 
-inside the procedure \fIname\fR, just after the actual execution
-takes place.
-Setting a \fIleavestep\fR trace on a \fIcommand\fR
-will not result in an error and is simply ignored.
+.
+Invoke \fIcommandPrefix\fR for every Tcl command which is executed from the
+start of the execution of the procedure \fIname\fR until that
+procedure finishes. \fICommandPrefix\fR is invoked just after the actual
+execution of the Tcl command being reported takes place.
+Setting a \fIleavestep\fR trace on a command \fIname\fR that does not refer to
+a procedure will not result in an error and is simply ignored.
 .PP
-When the trace triggers, depending on the operations being traced, a 
-number of arguments are appended to \fIcommand\fR so that the actual 
+When the trace triggers, depending on the operations being traced, a
+number of arguments are appended to \fIcommandPrefix\fR so that the actual
 command is as follows:
 .PP
 For \fBenter\fR and \fBenterstep\fR operations:
 .CS
-\fIcommand command-string op\fR
+\fIcommandPrefix command-string op\fR
 .CE
-\fICommand-string\fR gives the complete current command being 
-executed (the traced command for a \fBenter\fR operation, an 
+\fICommand-string\fR gives the complete current command being
+executed (the traced command for a \fBenter\fR operation, an
 arbitrary command for a \fBenterstep\fR operation), including
 all arguments in their fully expanded form.
 \fIOp\fR indicates what operation is being performed on the
 command execution, and is one of \fBenter\fR or \fBenterstep\fR as
 defined above.  The trace operation can be used to stop the
 command from executing, by deleting the command in question.  Of
-course when the command is subsequently executed, an 'invalid command'
+course when the command is subsequently executed, an
+.QW "invalid command"
 error will occur.
 .PP
 For \fBleave\fR and \fBleavestep\fR operations:
 .CS
-\fIcommand command-string code result op\fR
+\fIcommandPrefix command-string code result op\fR
 .CE
-\fICommand-string\fR gives the complete current command being 
-executed (the traced command for a \fBenter\fR operation, an 
+\fICommand-string\fR gives the complete current command being
+executed (the traced command for a \fBenter\fR operation, an
 arbitrary command for a \fBenterstep\fR operation), including
 all arguments in their fully expanded form.
 \fICode\fR gives the result code of that execution, and \fIresult\fR
 the result string.
 \fIOp\fR indicates what operation is being performed on the
 command execution, and is one of \fBleave\fR or \fBleavestep\fR as
-defined above.  
+defined above.
 Note that the creation of many \fBenterstep\fR or
 \fBleavestep\fR traces can lead to unintuitive results, since the
 invoked commands from one trace can themselves lead to further
 command invocations for other traces.
 .PP
-\fICommand\fR executes in the same context as the code that invoked
-the traced operation: thus the \fIcommand\fR, if invoked from a procedure,
-will have access to the same local variables as code in the procedure.
-This context may be different than the context in which the trace was
-created. If \fIcommand\fR invokes a procedure (which it normally does)
-then the procedure will have to use upvar or uplevel commands if it wishes
-to access the local variables of the code which invoked the trace operation.
+\fICommandPrefix\fR executes in the same context as the code that invoked
+the traced operation: thus the \fIcommandPrefix\fR, if invoked from a
+procedure, will have access to the same local variables as code in the
+procedure. This context may be different than the context in which the trace
+was created. If \fIcommandPrefix\fR invokes a procedure (which it normally
+does) then the procedure will have to use \fBupvar\fR or \fBuplevel\fR
+commands if it wishes to access the local variables of the code which invoked
+the trace operation.
 .PP
-While \fIcommand\fR is executing during an execution trace, traces
-on \fIname\fR are temporarily disabled. This allows the \fIcommand\fR
+While \fIcommandPrefix\fR is executing during an execution trace, traces
+on \fIname\fR are temporarily disabled. This allows the \fIcommandPrefix\fR
 to execute \fIname\fR in its body without invoking any other traces again.
-If an error occurs while executing the \fIcommand\fR body, then the
+If an error occurs while executing the \fIcommandPrefix\fR, then the
 command \fIname\fR as a whole will return that same error.
 .PP
 When multiple traces are set on \fIname\fR, then for \fIenter\fR
@@ -160,17 +175,17 @@ in the reverse order of how the traces were originally created;
 and for \fIleave\fR and \fIleavestep\fR operations, the traced
 commands are invoked in the original order of creation.
 .PP
-The behavior of execution traces is currently undefined for a command 
+The behavior of execution traces is currently undefined for a command
 \fIname\fR imported into another namespace.
 .RE
 .TP
-\fBtrace add variable\fI name ops command\fR
-Arrange for \fIcommand\fR to be executed whenever variable \fIname\fR
+\fBtrace add variable\fI name ops commandPrefix\fR
+Arrange for \fIcommandPrefix\fR to be executed whenever variable \fIname\fR
 is accessed in one of the ways given by the list \fIops\fR.  \fIName\fR may
 refer to a normal variable, an element of an array, or to an array
 as a whole (i.e. \fIname\fR may be just the name of an array, with no
 parenthesized index).  If \fIname\fR refers to a whole array, then
-\fIcommand\fR is invoked whenever any element of the array is
+\fIcommandPrefix\fR is invoked whenever any element of the array is
 manipulated.  If the variable does not exist, it will be created but
 will not be given a value, so it will be visible to \fBnamespace which\fR
 queries, but not to \fBinfo exists\fR queries.
@@ -180,20 +195,20 @@ queries, but not to \fBinfo exists\fR queries.
 one or more of the following items:
 .TP
 \fBarray\fR
-Invoke \fIcommand\fR whenever the variable is accessed or modified via
+Invoke \fIcommandPrefix\fR whenever the variable is accessed or modified via
 the \fBarray\fR command, provided that \fIname\fR is not a scalar
 variable at the time that the \fBarray\fR command is invoked.  If
 \fIname\fR is a scalar variable, the access via the \fBarray\fR
 command will not trigger the trace.
 .TP
 \fBread\fR
-Invoke \fIcommand\fR whenever the variable is read.
+Invoke \fIcommandPrefix\fR whenever the variable is read.
 .TP
 \fBwrite\fR
-Invoke \fIcommand\fR whenever the variable is written.
+Invoke \fIcommandPrefix\fR whenever the variable is written.
 .TP
 \fBunset\fR
-Invoke \fIcommand\fR whenever the variable is unset.  Variables
+Invoke \fIcommandPrefix\fR whenever the variable is unset.  Variables
 can be unset explicitly with the \fBunset\fR command, or
 implicitly when procedures return (all of their local variables
 are unset).  Variables are also unset when interpreters are
@@ -201,9 +216,9 @@ deleted, but traces will not be invoked because there is no
 interpreter in which to execute them.
 .PP
 When the trace triggers, three arguments are appended to
-\fIcommand\fR so that the actual command is as follows:
+\fIcommandPrefix\fR so that the actual command is as follows:
 .CS
-\fIcommand name1 name2 op\fR
+\fIcommandPrefix name1 name2 op\fR
 .CE
 \fIName1\fR and \fIname2\fR give the name(s) for the variable
 being accessed:  if the variable is a scalar then \fIname1\fR
@@ -221,11 +236,11 @@ different name.
 variable, and is one of \fBread\fR, \fBwrite\fR, or \fBunset\fR as
 defined above.
 .PP
-\fICommand\fR executes in the same context as the code that invoked
+\fICommandPrefix\fR executes in the same context as the code that invoked
 the traced operation:  if the variable was accessed as part of a Tcl
-procedure, then \fIcommand\fR will have access to the same local
+procedure, then \fIcommandPrefix\fR will have access to the same local
 variables as code in the procedure.  This context may be different
-than the context in which the trace was created. If \fIcommand\fR
+than the context in which the trace was created. If \fIcommandPrefix\fR
 invokes a procedure (which it normally does) then the procedure will
 have to use \fBupvar\fR or \fBuplevel\fR if it wishes to access the
 traced variable.  Note also that \fIname1\fR may not necessarily be
@@ -233,25 +248,25 @@ the same as the name used to set the trace on the variable;
 differences can occur if the access is made through a variable defined
 with the \fBupvar\fR command.
 .PP
-For read and write traces, \fIcommand\fR can modify the variable to
-affect the result of the traced operation.  If \fIcommand\fR modifies
+For read and write traces, \fIcommandPrefix\fR can modify the variable to
+affect the result of the traced operation.  If \fIcommandPrefix\fR modifies
 the value of a variable during a read or write trace, then the new
 value will be returned as the result of the traced operation.  The
-return value from  \fIcommand\fR is ignored except that if it returns
+return value from  \fIcommandPrefix\fR is ignored except that if it returns
 an error of any sort then the traced operation also returns an error
 with the same error message returned by the trace command (this
 mechanism can be used to implement read-only variables, for example).
-For write traces, \fIcommand\fR is invoked after the variable's value
+For write traces, \fIcommandPrefix\fR is invoked after the variable's value
 has been changed; it can write a new value into the variable to
 override the original value specified in the write operation.  To
-implement read-only variables, \fIcommand\fR will have to restore the
+implement read-only variables, \fIcommandPrefix\fR will have to restore the
 old value of the variable.
 .PP
-While \fIcommand\fR is executing during a read or write trace, traces
+While \fIcommandPrefix\fR is executing during a read or write trace, traces
 on the variable are temporarily disabled.  This means that reads and
-writes invoked by \fIcommand\fR will occur directly, without invoking
-\fIcommand\fR (or any other traces) again.  However, if \fIcommand\fR
-unsets the variable then unset traces will be invoked.
+writes invoked by \fIcommandPrefix\fR will occur directly, without invoking
+\fIcommandPrefix\fR (or any other traces) again.  However, if
+\fIcommandPrefix\fR unsets the variable then unset traces will be invoked.
 .PP
 When an unset trace is invoked, the variable has already been deleted:
 it will appear to be undefined with no traces.  If an unset occurs
@@ -279,28 +294,28 @@ This command returns an empty string.
 .RE
 .RE
 .TP
-\fBtrace remove \fItype name opList command\fR
+\fBtrace remove \fItype name opList commandPrefix\fR
 Where \fItype\fR is either \fBcommand\fR, \fBexecution\fR or \fBvariable\fR.
 .RS
 .TP
-\fBtrace remove command\fI name opList command\fR
+\fBtrace remove command\fI name opList commandPrefix\fR
 If there is a trace set on command \fIname\fR with the operations and
-command given by \fIopList\fR and \fIcommand\fR, then the trace is
-removed, so that \fIcommand\fR will never again be invoked.  Returns
-an empty string.   If \fIname\fR doesn't exist, the command will throw
+command given by \fIopList\fR and \fIcommandPrefix\fR, then the trace is
+removed, so that \fIcommandPrefix\fR will never again be invoked.  Returns
+an empty string.   If \fIname\fR does not exist, the command will throw
 an error.
 .TP
-\fBtrace remove execution\fI name opList command\fR
+\fBtrace remove execution\fI name opList commandPrefix\fR
 If there is a trace set on command \fIname\fR with the operations and
-command given by \fIopList\fR and \fIcommand\fR, then the trace is
-removed, so that \fIcommand\fR will never again be invoked.  Returns
-an empty string.   If \fIname\fR doesn't exist, the command will throw
+command given by \fIopList\fR and \fIcommandPrefix\fR, then the trace is
+removed, so that \fIcommandPrefix\fR will never again be invoked.  Returns
+an empty string.   If \fIname\fR does not exist, the command will throw
 an error.
 .TP
-\fBtrace remove variable\fI name opList command\fR
+\fBtrace remove variable\fI name opList commandPrefix\fR
 If there is a trace set on variable \fIname\fR with the operations and
-command given by \fIopList\fR and \fIcommand\fR, then the trace is
-removed, so that \fIcommand\fR will never again be invoked.  Returns
+command given by \fIopList\fR and \fIcommandPrefix\fR, then the trace is
+removed, so that \fIcommandPrefix\fR will never again be invoked.  Returns
 an empty string.
 .RE
 .TP
@@ -311,24 +326,24 @@ Where \fItype\fR is either \fBcommand\fR, \fBexecution\fR or \fBvariable\fR.
 \fBtrace info command\fI name\fR
 Returns a list containing one element for each trace currently set on
 command \fIname\fR. Each element of the list is itself a list
-containing two elements, which are the \fIopList\fR and \fIcommand\fR
-associated with the trace.  If \fIname\fR doesn't have any traces set,
+containing two elements, which are the \fIopList\fR and \fIcommandPrefix\fR
+associated with the trace.  If \fIname\fR does not have any traces set,
 then the result of the command will be an empty string.  If \fIname\fR
-doesn't exist, the command will throw an error.
+does not exist, the command will throw an error.
 .TP
 \fBtrace info execution\fI name\fR
 Returns a list containing one element for each trace currently set on
 command \fIname\fR. Each element of the list is itself a list
-containing two elements, which are the \fIopList\fR and \fIcommand\fR
-associated with the trace.  If \fIname\fR doesn't have any traces set,
+containing two elements, which are the \fIopList\fR and \fIcommandPrefix\fR
+associated with the trace.  If \fIname\fR does not have any traces set,
 then the result of the command will be an empty string.  If \fIname\fR
-doesn't exist, the command will throw an error.
+does not exist, the command will throw an error.
 .TP
 \fBtrace info variable\fI name\fR
 Returns a list containing one element for each trace currently set on
 variable \fIname\fR.  Each element of the list is itself a list
-containing two elements, which are the \fIopList\fR and \fIcommand\fR
-associated with the trace.  If \fIname\fR doesn't exist or doesn't
+containing two elements, which are the \fIopList\fR and \fIcommandPrefix\fR
+associated with the trace.  If \fIname\fR does not exist or does not
 have any traces set, then the result of the command will be an empty
 string.
 .RE
@@ -341,8 +356,8 @@ This is equivalent to \fBtrace add variable \fIname ops command\fR.
 .TP
 \fBtrace vdelete \fIname ops command\fR
 This is equivalent to \fBtrace remove variable \fIname ops command\fR
-.TP 
-\fBtrace vinfo \fIname\fR 
+.TP
+\fBtrace vinfo \fIname\fR
 This is equivalent to \fBtrace info variable \fIname\fR
 .RE
 .PP
@@ -375,9 +390,22 @@ proc doMult args {
 \fBtrace add\fR variable foo write doMult
 \fBtrace add\fR variable bar write doMult
 .CE
-
+.PP
+Print a trace of what commands are executed during the processing of a Tcl
+procedure:
+.CS
+proc x {} { y }
+proc y {} { z }
+proc z {} { puts hello }
+proc report args {puts [info level 0]}
+\fBtrace add\fR execution x enterstep report
+x
+  \(-> \fIreport y enterstep\fR
+    \fIreport z enterstep\fR
+    \fIreport {puts hello} enterstep\fR
+    \fIhello\fR
+.CE
 .SH "SEE ALSO"
 set(n), unset(n)
-
 .SH KEYWORDS
 read, command, rename, variable, write, trace, unset
diff --git a/doc/unknown.n b/doc/unknown.n
index a5cbe6f..c258daa 100644
--- a/doc/unknown.n
+++ b/doc/unknown.n
@@ -14,22 +14,24 @@ unknown \- Handle attempts to use non-existent commands
 .SH SYNOPSIS
 \fBunknown \fIcmdName \fR?\fIarg arg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 This command is invoked by the Tcl interpreter whenever a script
-tries to invoke a command that doesn't exist.  The default implementation
+tries to invoke a command that does not exist.  The default implementation
 of \fBunknown\fR is a library procedure defined when Tcl initializes an
 interpreter.  You can override the default \fBunknown\fR to change its
-functionality.  Note that there is no default implementation of
-\fBunknown\fR in a safe interpreter.
+functionality, or you can register a new handler for individual namespaces
+using the \fBnamespace unknown\fR command.  Note that there is no default 
+implementation of \fBunknown\fR in a safe interpreter.
 .PP
 If the Tcl interpreter encounters a command name for which there
-is not a defined command, then Tcl checks for the existence of
-a command named \fBunknown\fR.
-If there is no such command, then the interpreter returns an
-error.
-If the \fBunknown\fR command exists, then it is invoked with
+is not a defined command (in either the current namespace, or the 
+global namespace), then Tcl checks for the existence of
+an unknown handler for the current namespace. By default, this
+handler is a command named \fB::unknown\fR.  If there is no such 
+command, then the interpreter returns an error.
+If the \fBunknown\fR command exists (or a new handler has been
+registered for the current namespace), then it is invoked with
 arguments consisting of the fully-substituted name and arguments
 for the original non-existent command.
 The \fBunknown\fR command typically does things like searching
@@ -49,7 +51,7 @@ If the auto-load fails then \fBunknown\fR calls \fBauto_execok\fR
 to see if there is an executable file by the name \fIcmd\fR.
 If so, it invokes the Tcl \fBexec\fR command
 with \fIcmd\fR and all the \fIargs\fR as arguments.
-If \fIcmd\fR can't be auto-executed, \fBunknown\fR checks to
+If \fIcmd\fR cannot be auto-executed, \fBunknown\fR checks to
 see if the command was invoked at top-level and outside of any
 script.  If so, then \fBunknown\fR takes two additional steps.
 First, it sees if \fIcmd\fR has one of the following three forms:
@@ -80,12 +82,10 @@ rename \fBunknown\fR _original_unknown
 # Provide our own implementation
 proc \fBunknown\fR args {
     puts stderr "WARNING: unknown command: $args"
-    uplevel 1 [list _original_unknown {expand}$args]
+    uplevel 1 [list _original_unknown {*}$args]
 }
 .CE
-
 .SH "SEE ALSO"
-info(n), proc(n), interp(n), library(n)
-
+info(n), proc(n), interp(n), library(n), namespace(n)
 .SH KEYWORDS
 error, non-existent command
diff --git a/doc/unload.n b/doc/unload.n
new file mode 100644
index 0000000..f060cd6
--- /dev/null
+++ b/doc/unload.n
@@ -0,0 +1,162 @@
+'\"
+'\" Copyright (c) 2003 George Petasis <petasis@iit.demokritos.gr>.
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\" 
+.so man.macros
+.TH unload n 8.5 Tcl "Tcl Built-In Commands"
+.BS
+'\" Note:  do not modify the .SH NAME line immediately below!
+.SH NAME
+unload \- Unload machine code
+.SH SYNOPSIS
+\fBunload \fR?\fIswitches\fR? \fIfileName\fR
+.br
+\fBunload \fR?\fIswitches\fR? \fIfileName packageName\fR
+.br
+\fBunload \fR?\fIswitches\fR? \fIfileName packageName interp\fR
+.BE
+.SH DESCRIPTION
+.PP
+This command tries to unload shared libraries previously loaded
+with \fBload\fR from the application's address space.  \fIfileName\fR
+is the name of the file containing the library file to be unload;  it
+must be the same as the filename provided to \fBload\fR for
+loading the library.
+The \fIpackageName\fR argument is the name of the package (as
+determined by or passed to \fBload\fR), and is used to
+compute the name of the unload procedure; if not supplied, it is
+computed from \fIfileName\fR in the same manner as \fBload\fR.
+The \fIinterp\fR argument is the path name of the interpreter from
+which to unload the package (see the \fBinterp\fR manual entry for
+details); if \fIinterp\fR is omitted, it defaults to the
+interpreter in which the \fBunload\fR command was invoked.
+.PP
+If the initial arguments to \fBunload\fR start with \fB\-\fR then
+they are treated as switches.  The following switches are
+currently supported:
+.TP
+\fB\-nocomplain\fR
+.
+Suppresses all error messages. If this switch is given, \fBunload\fR will
+never report an error.
+.TP
+\fB\-keeplibrary\fR
+.
+This switch will prevent \fBunload\fR from issuing the operating system call
+that will unload the library from the process. 
+.TP
+\fB\-\|\-\fR
+.
+Marks the end of switches.  The argument following this one will
+be treated as a \fIfileName\fR even if it starts with a \fB\-\fR.
+.SS "UNLOAD OPERATION"
+.PP
+When a file containing a shared library is loaded through the
+\fBload\fR command, Tcl associates two reference counts to the library
+file. The first counter shows how many times the library has been
+loaded into normal (trusted) interpreters while the second describes how many
+times the library has been loaded into safe interpreters. As a file containing
+a shared library can be loaded only once by Tcl (with the first \fBload\fR
+call on the file), these counters track how many interpreters use the library.
+Each subsequent call to \fBload\fR after the first simply increments the
+proper reference count.
+.PP
+\fBunload\fR works in the opposite direction. As a first step, \fBunload\fR
+will check whether the library is unloadable: an unloadable library exports
+a special unload procedure. The name of the unload procedure is determined by
+\fIpackageName\fR and whether or not the target interpreter
+is a safe one.  For normal interpreters the name of the initialization
+procedure will have the form \fIpkg\fB_Unload\fR, where \fIpkg\fR
+is the same as \fIpackageName\fR except that the first letter is
+converted to upper case and all other letters
+are converted to lower case.  For example, if \fIpackageName\fR is
+\fBfoo\fR or \fBFOo\fR, the initialization procedure's name will
+be \fBFoo_Unload\fR.
+If the target interpreter is a safe interpreter, then the name
+of the initialization procedure will be \fIpkg\fB_SafeUnload\fR
+instead of \fIpkg\fB_Unload\fR.
+.PP
+If \fBunload\fR determines that a library is not unloadable (or unload
+functionality has been disabled during compilation), an error will be returned.
+If the library is unloadable, then \fBunload\fR will call the unload
+procedure. If the unload procedure returns \fBTCL_OK\fR, \fBunload\fR will proceed
+and decrease the proper reference count (depending on the target interpreter
+type). When both reference counts have reached 0, the library will be
+detached from the process.
+.SS "UNLOAD HOOK PROTOTYPE"
+.PP
+The unload procedure must match the following prototype:
+.CS
+typedef int Tcl_PackageUnloadProc(Tcl_Interp *\fIinterp\fR, int \fIflags\fR);
+.CE
+.PP
+The \fIinterp\fR argument identifies the interpreter from which the
+library is to be unloaded.  The unload procedure must return
+\fBTCL_OK\fR or \fBTCL_ERROR\fR to indicate whether or not it completed
+successfully;  in the event of an error it should set the interpreter's result
+to point to an error message.  In this case, the result of the
+\fBunload\fR command will be the result returned by the unload procedure.
+.PP
+The \fIflags\fR argument can be either \fBTCL_UNLOAD_DETACH_FROM_INTERPRETER\fR
+or \fBTCL_UNLOAD_DETACH_FROM_PROCESS\fR. In case the library will remain
+attached to the process after the unload procedure returns (i.e. because
+the library is used by other interpreters),
+\fBTCL_UNLOAD_DETACH_FROM_INTERPRETER\fR will be defined. However, if the
+library is used only by the target interpreter and the library will be
+detached from the application as soon as the unload procedure returns,
+the \fIflags\fR argument will be set to \fBTCL_UNLOAD_DETACH_FROM_PROCESS\fR. 
+.SS NOTES
+.PP
+The \fBunload\fR command cannot unload libraries that are statically
+linked with the application.
+If \fIfileName\fR is an empty string, then the \fIpackageName\fR argument must
+be specified.
+.PP
+If \fIpackageName\fR is omitted or specified as an empty string,
+Tcl tries to guess the name of the package.
+This may be done differently on different platforms.
+The default guess, which is used on most UNIX platforms, is to
+take the last element of \fIfileName\fR, strip off the first
+three characters if they are \fBlib\fR, and use any following
+alphabetic and underline characters as the module name.
+For example, the command \fBunload libxyz4.2.so\fR uses the module
+name \fBxyz\fR and the command \fBunload bin/last.so {}\fR uses the
+module name \fBlast\fR.
+.SH "PORTABILITY ISSUES"
+.TP
+\fBUnix\fR\0\0\0\0\0
+.
+Not all unix operating systems support library unloading. Under such
+an operating system \fBunload\fR returns an error (unless \fB\-nocomplain\fR
+has been specified).
+.SH BUGS
+.PP
+If the same file is \fBload\fRed by different \fIfileName\fRs, it will
+be loaded into the process's address space multiple times.  The
+behavior of this varies from system to system (some systems may
+detect the redundant loads, others may not). In case a library has been
+silently detached by the operating system (and as a result Tcl thinks the
+library is still loaded), it may be dangerous to use
+\fBunload\fR on such a library (as the library will be completely detached
+from the application while some interpreters will continue to use it).
+.SH EXAMPLE
+If an unloadable module in the file \fBfoobar.dll\fR had been loaded
+using the \fBload\fR command like this (on Windows):
+.CS
+load c:/some/dir/foobar.dll
+.CE
+then it would be unloaded like this:
+.CS
+\fBunload\fR c:/some/dir/foobar.dll
+.CE
+.PP
+This allows a C code module to be installed temporarily into a
+long-running Tcl program and then removed again (either because it is
+no longer needed or because it is being updated with a new version)
+without having to shut down the overall Tcl process.
+.SH "SEE ALSO"
+info sharedlibextension, load(n), safe(n)
+.SH KEYWORDS
+binary code, unloading, safe interpreter, shared library
diff --git a/doc/unset.n b/doc/unset.n
index 2bde1e2..29d7e7c 100644
--- a/doc/unset.n
+++ b/doc/unset.n
@@ -15,7 +15,6 @@ unset \- Delete variables
 .SH SYNOPSIS
 \fBunset \fR?\fI\-nocomplain\fR? ?\fI\-\-\fR? ?\fIname name name ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 This command removes one or more variables.
@@ -26,16 +25,14 @@ element is removed without affecting the rest of the array.
 If a \fIname\fR consists of an array name with no parenthesized
 index, then the entire array is deleted.
 The \fBunset\fR command returns an empty string as result.
-.VS 8.4
 If \fI\-nocomplain\fR is specified as the first argument, any possible
 errors are suppressed.  The option may not be abbreviated, in order to
 disambiguate it from possible variable names.  The option \fI\-\-\fR
 indicates the end of the options, and should be used if you wish to
 remove a variable with the same name as any of the options.
-.VE 8.4
 If an error occurs, any variables after the named one causing the error
 are not
-deleted.  An error can occur when the named variable doesn't exist, or the
+deleted.  An error can occur when the named variable does not exist, or the
 name refers to an array element but the variable is a scalar, or the name
 refers to a variable in a non-existent namespace.
 .SH EXAMPLE
@@ -59,9 +56,7 @@ parray squares
 puts "The prime squares are:"
 parray squares
 .CE
-
 .SH "SEE ALSO"
 set(n), trace(n), upvar(n)
-
 .SH KEYWORDS
 remove, variable
diff --git a/doc/update.n b/doc/update.n
index 41a50f8..555766c 100644
--- a/doc/update.n
+++ b/doc/update.n
@@ -17,7 +17,8 @@ update \- Process pending events and idle callbacks
 
 .SH DESCRIPTION
 .PP
-This command is used to bring the application ``up to date''
+This command is used to bring the application
+.QW "up to date"
 by entering the event loop repeatedly until all pending events
 (including idle callbacks) have been processed.
 .PP
@@ -59,7 +60,7 @@ while {!$done} {
 .CE
 
 .SH "SEE ALSO"
-after(n), bgerror(n)
+after(n), interp(n)
 
 .SH KEYWORDS
 event, flush, handler, idle, update
diff --git a/doc/uplevel.n b/doc/uplevel.n
index d34716c..c8ef0ff 100644
--- a/doc/uplevel.n
+++ b/doc/uplevel.n
@@ -14,7 +14,6 @@ uplevel \- Execute a script in a different stack frame
 .SH SYNOPSIS
 \fBuplevel \fR?\fIlevel\fR?\fI arg \fR?\fIarg ...\fR?
 .BE
-
 .SH DESCRIPTION
 .PP
 All of the \fIarg\fR arguments are concatenated as if they had
@@ -53,16 +52,16 @@ the command
 .CE
 then the \fBset\fR command will modify the same variable \fBx\fR in \fBb\fR's
 context:  the procedure \fBc\fR does not appear to be on the call stack
-when \fBd\fR is executing.  The command ``\fBinfo level\fR'' may
+when \fBd\fR is executing.  The \fBinfo level\fR command may
 be used to obtain the level of the current procedure.
 .PP
 \fBUplevel\fR makes it possible to implement new control
 constructs as Tcl procedures (for example, \fBuplevel\fR could
 be used to implement the \fBwhile\fR construct as a Tcl procedure).
 .PP
-\fBnamespace eval\fR is another way (besides procedure calls)
-that the Tcl naming context can change.
-It adds a call frame to the stack to represent the namespace context.
+The \fBnamespace eval\fR and \fBapply\fR commands offer other ways
+(besides procedure calls) that the Tcl naming context can change.
+They add a call frame to the stack to represent the namespace context.
 This means each \fBnamespace eval\fR command
 counts as another call level for \fBuplevel\fR and \fBupvar\fR commands.
 For example, \fBinfo level 1\fR will return a list
@@ -90,9 +89,7 @@ proc do {body while condition} {
     }
 }
 .CE
-
 .SH "SEE ALSO"
-namespace(n), upvar(n)
-
+apply(n), namespace(n), upvar(n)
 .SH KEYWORDS
 context, level, namespace, stack frame, variables
diff --git a/doc/upvar.n b/doc/upvar.n
index 03f4cd9..a255485 100644
--- a/doc/upvar.n
+++ b/doc/upvar.n
@@ -22,7 +22,7 @@ procedure to refer to variables in an enclosing procedure call or
 to global variables.
 \fILevel\fR may have any of the forms permitted for the \fBuplevel\fR
 command, and may be omitted if the first letter of the first \fIotherVar\fR
-isn't \fB#\fR or a digit (it defaults to \fB1\fR).
+is not \fB#\fR or a digit (it defaults to \fB1\fR).
 For each \fIotherVar\fR argument, \fBupvar\fR makes the variable
 by that name in the procedure frame given by \fIlevel\fR (or at
 global level, if \fIlevel\fR is \fB#0\fR) accessible
@@ -33,8 +33,8 @@ call;  it will be created the first time \fImyVar\fR is referenced, just like
 an ordinary variable.  There must not exist a variable by the
 name \fImyVar\fR at the time \fBupvar\fR is invoked.
 \fIMyVar\fR is always treated as the name of a variable, not an
-array element.  Even if the name looks like an array element,
-such as \fBa(b)\fR, a regular variable is created.
+array element.  An error is returned if the name looks like an array element,
+such as \fBa(b)\fR.
 \fIOtherVar\fR may refer to a scalar variable, an array,
 or an array element.
 \fBUpvar\fR returns an empty string.
@@ -44,14 +44,14 @@ procedure calling and also makes it easier to build new control constructs
 as Tcl procedures.
 For example, consider the following procedure:
 .CS
-proc add2 name {
+proc \fIadd2\fR name {
    \fBupvar\fR $name x
-   set x [expr $x+2]
+   set x [expr {$x + 2}]
 }
 .CE
-\fBadd2\fR is invoked with an argument giving the name of a variable,
-and it adds two to the value of that variable.
-Although \fBadd2\fR could have been implemented using \fBuplevel\fR
+If \fIadd2\fR is invoked with an argument giving the name of a variable,
+it adds two to the value of that variable.
+Although \fIadd2\fR could have been implemented using \fBuplevel\fR
 instead of \fBupvar\fR, \fBupvar\fR makes it simpler for \fBadd2\fR
 to access the variable in the caller's procedure frame.
 .PP
@@ -66,7 +66,6 @@ the outermost procedure call or the outermost \fBnamespace eval\fR command.
 Also, \fBuplevel #0\fR evaluates a script
 at top-level in the outermost namespace (the global namespace).
 .PP
-.VS
 If an upvar variable is unset (e.g. \fBx\fR in \fBadd2\fR above), the
 \fBunset\fR operation affects the variable it is linked to, not the
 upvar variable.  There is no way to unset an upvar variable except
@@ -80,19 +79,21 @@ unexpected manner.  If a variable trace is defined on \fIotherVar\fR, that
 trace will be triggered by actions involving \fImyVar\fR.  However,
 the trace procedure will be passed the name of \fImyVar\fR, rather
 than the name of \fIotherVar\fR.  Thus, the output of the following code
-will be \fBlocalVar\fR rather than \fBoriginalVar\fR:
+will be
+.QW "\fIlocalVar\fR"
+rather than
+.QW "\fIoriginalVar\fR" :
 .CS
-proc \fBtraceproc\fR { name index op } {
+proc \fItraceproc\fR { name index op } {
    puts $name
 }
-proc \fBsetByUpvar\fR { name value } {
+proc \fIsetByUpvar\fR { name value } {
    \fBupvar\fR $name localVar
    set localVar $value
 }
 set originalVar 1
-trace variable originalVar w \fBtraceproc\fR
-\fBsetByUpvar\fR originalVar 2
-}
+trace variable originalVar w \fItraceproc\fR
+\fIsetByUpvar\fR originalVar 2
 .CE
 .PP
 If \fIotherVar\fR refers to an element of an array, then variable
@@ -100,7 +101,6 @@ traces set for the entire array will not be invoked when \fImyVar\fR
 is accessed (but traces on the particular element will still be
 invoked).  In particular, if the array is \fBenv\fR, then changes
 made to \fImyVar\fR will not be passed to subprocesses correctly.
-.VE
 .SH EXAMPLE
 A \fBdecr\fR command that works like \fBincr\fR except it subtracts
 the value from the variable instead of adding it:
diff --git a/doc/vwait.n b/doc/vwait.n
index d1cdcbc..e7289e1 100644
--- a/doc/vwait.n
+++ b/doc/vwait.n
@@ -21,7 +21,7 @@ the application if no events are ready.  It continues processing
 events until some event handler sets the value of variable
 \fIvarName\fR.  Once \fIvarName\fR has been set, the \fBvwait\fR
 command will return as soon as the event handler that modified
-\fIvarName\fR completes.  \fIvarName\fR must globally scoped
+\fIvarName\fR completes.  \fIvarName\fR must be globally scoped
 (either with a call to \fBglobal\fR for the \fIvarName\fR, or with
 the full namespace path specification).
 .PP
diff --git a/generic/README b/generic/README
index 3311690..d1c078e 100644
--- a/generic/README
+++ b/generic/README
@@ -1,3 +1,3 @@
 This directory contains Tcl source files that work on all the platforms
-where Tcl runs (e.g. UNIX, PCs).  Platform-specific
+where Tcl runs (e.g. UNIX, PCs, and MacOSX).  Platform-specific
 sources are in the directories ../unix, ../win, and ../macosx.
diff --git a/generic/regc_color.c b/generic/regc_color.c
index f6716be..ba1f668 100644
--- a/generic/regc_color.c
+++ b/generic/regc_color.c
@@ -2,24 +2,24 @@
  * colorings of characters
  * This file is #included by regcomp.c.
  *
- * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * Corporation, none of whom are responsible for the results. The author
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
@@ -28,662 +28,712 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *
- *
- * Note that there are some incestuous relationships between this code and
- * NFA arc maintenance, which perhaps ought to be cleaned up sometime.
+ * Note that there are some incestuous relationships between this code and NFA
+ * arc maintenance, which perhaps ought to be cleaned up sometime.
  */
 
-
-
 #define	CISERR()	VISERR(cm->v)
 #define	CERR(e)		VERR(cm->v, (e))
-
-
-
+
 /*
  - initcm - set up new colormap
  ^ static VOID initcm(struct vars *, struct colormap *);
  */
-static VOID
-initcm(v, cm)
-struct vars *v;
-struct colormap *cm;
+static void
+initcm(
+    struct vars *v,
+    struct colormap *cm)
 {
-	int i;
-	int j;
-	union tree *t;
-	union tree *nextt;
-	struct colordesc *cd;
-
-	cm->magic = CMMAGIC;
-	cm->v = v;
-
-	cm->ncds = NINLINECDS;
-	cm->cd = cm->cdspace;
-	cm->max = 0;
-	cm->free = 0;
-
-	cd = cm->cd;			/* cm->cd[WHITE] */
-	cd->sub = NOSUB;
-	cd->arcs = NULL;
-	cd->flags = 0;
-	cd->nchrs = CHR_MAX - CHR_MIN + 1;
-
-	/* upper levels of tree */
-	for (t = &cm->tree[0], j = NBYTS-1; j > 0; t = nextt, j--) {
-		nextt = t + 1;
-		for (i = BYTTAB-1; i >= 0; i--)
-			t->tptr[i] = nextt;
+    int i;
+    int j;
+    union tree *t;
+    union tree *nextt;
+    struct colordesc *cd;
+
+    cm->magic = CMMAGIC;
+    cm->v = v;
+
+    cm->ncds = NINLINECDS;
+    cm->cd = cm->cdspace;
+    cm->max = 0;
+    cm->free = 0;
+
+    cd = cm->cd;		/* cm->cd[WHITE] */
+    cd->sub = NOSUB;
+    cd->arcs = NULL;
+    cd->flags = 0;
+    cd->nchrs = CHR_MAX - CHR_MIN + 1;
+
+    /*
+     * Upper levels of tree.
+     */
+
+    for (t=&cm->tree[0], j=NBYTS-1 ; j>0 ; t=nextt, j--) {
+	nextt = t + 1;
+	for (i=BYTTAB-1 ; i>=0 ; i--) {
+	    t->tptr[i] = nextt;
 	}
-	/* bottom level is solid white */
-	t = &cm->tree[NBYTS-1];
-	for (i = BYTTAB-1; i >= 0; i--)
-		t->tcolor[i] = WHITE;
-	cd->block = t;
-}
+    }
 
+    /*
+     * Bottom level is solid white.
+     */
+
+    t = &cm->tree[NBYTS-1];
+    for (i=BYTTAB-1 ; i>=0 ; i--) {
+	t->tcolor[i] = WHITE;
+    }
+    cd->block = t;
+}
+
 /*
  - freecm - free dynamically-allocated things in a colormap
  ^ static VOID freecm(struct colormap *);
  */
-static VOID
-freecm(cm)
-struct colormap *cm;
+static void
+freecm(
+    struct colormap *cm)
 {
-	size_t i;
-	union tree *cb;
-
-	cm->magic = 0;
-	if (NBYTS > 1)
-		cmtreefree(cm, cm->tree, 0);
-	for (i = 1; i <= cm->max; i++)		/* skip WHITE */
-		if (!UNUSEDCOLOR(&cm->cd[i])) {
-			cb = cm->cd[i].block;
-			if (cb != NULL)
-				FREE(cb);
-		}
-	if (cm->cd != cm->cdspace)
-		FREE(cm->cd);
+    size_t i;
+    union tree *cb;
+
+    cm->magic = 0;
+    if (NBYTS > 1) {
+	cmtreefree(cm, cm->tree, 0);
+    }
+    for (i=1 ; i<=cm->max ; i++) {	/* skip WHITE */
+	if (!UNUSEDCOLOR(&cm->cd[i])) {
+	    cb = cm->cd[i].block;
+	    if (cb != NULL) {
+		FREE(cb);
+	    }
+	}
+    }
+    if (cm->cd != cm->cdspace) {
+	FREE(cm->cd);
+    }
 }
-
+
 /*
  - cmtreefree - free a non-terminal part of a colormap tree
  ^ static VOID cmtreefree(struct colormap *, union tree *, int);
  */
-static VOID
-cmtreefree(cm, tree, level)
-struct colormap *cm;
-union tree *tree;
-int level;			/* level number (top == 0) of this block */
+static void
+cmtreefree(
+    struct colormap *cm,
+    union tree *tree,
+    int level)			/* level number (top == 0) of this block */
 {
-	int i;
-	union tree *t;
-	union tree *fillt = &cm->tree[level+1];
-	union tree *cb;
-
-	assert(level < NBYTS-1);	/* this level has pointers */
-	for (i = BYTTAB-1; i >= 0; i--) {
-		t = tree->tptr[i];
-		assert(t != NULL);
-		if (t != fillt) {
-			if (level < NBYTS-2) {	/* more pointer blocks below */
-				cmtreefree(cm, t, level+1);
-				FREE(t);
-			} else {		/* color block below */
-				cb = cm->cd[t->tcolor[0]].block;
-				if (t != cb)	/* not a solid block */
-					FREE(t);
-			}
+    int i;
+    union tree *t;
+    union tree *fillt = &cm->tree[level+1];
+    union tree *cb;
+
+    assert(level < NBYTS-1);	/* this level has pointers */
+    for (i=BYTTAB-1 ; i>=0 ; i--) {
+	t = tree->tptr[i];
+	assert(t != NULL);
+	if (t != fillt) {
+	    if (level < NBYTS-2) {	/* more pointer blocks below */
+		cmtreefree(cm, t, level+1);
+		FREE(t);
+	    } else {		/* color block below */
+		cb = cm->cd[t->tcolor[0]].block;
+		if (t != cb) {	/* not a solid block */
+		    FREE(t);
 		}
+	    }
 	}
+    }
 }
-
+
 /*
  - setcolor - set the color of a character in a colormap
  ^ static color setcolor(struct colormap *, pchr, pcolor);
  */
 static color			/* previous color */
-setcolor(cm, c, co)
-struct colormap *cm;
-pchr c;
-pcolor co;
+setcolor(
+    struct colormap *cm,
+    pchr c,
+    pcolor co)
 {
-	uchr uc = c;
-	int shift;
-	int level;
-	int b;
-	int bottom;
-	union tree *t;
-	union tree *newt;
-	union tree *fillt;
-	union tree *lastt;
-	union tree *cb;
-	color prev;
-
-	assert(cm->magic == CMMAGIC);
-	if (CISERR() || co == COLORLESS)
+    uchr uc = c;
+    int shift;
+    int level;
+    int b;
+    int bottom;
+    union tree *t;
+    union tree *newt;
+    union tree *fillt;
+    union tree *lastt;
+    union tree *cb;
+    color prev;
+
+    assert(cm->magic == CMMAGIC);
+    if (CISERR() || co == COLORLESS) {
+	return COLORLESS;
+    }
+
+    t = cm->tree;
+    for (level=0, shift=BYTBITS*(NBYTS-1) ; shift>0; level++, shift-=BYTBITS){
+	b = (uc >> shift) & BYTMASK;
+	lastt = t;
+	t = lastt->tptr[b];
+	assert(t != NULL);
+	fillt = &cm->tree[level+1];
+	bottom = (shift <= BYTBITS) ? 1 : 0;
+	cb = (bottom) ? cm->cd[t->tcolor[0]].block : fillt;
+	if (t == fillt || t == cb) {	/* must allocate a new block */
+	    newt = (union tree *) MALLOC((bottom) ?
+		    sizeof(struct colors) : sizeof(struct ptrs));
+	    if (newt == NULL) {
+		CERR(REG_ESPACE);
 		return COLORLESS;
-
-	t = cm->tree;
-	for (level = 0, shift = BYTBITS * (NBYTS - 1); shift > 0;
-						level++, shift -= BYTBITS) {
-		b = (uc >> shift) & BYTMASK;
-		lastt = t;
-		t = lastt->tptr[b];
-		assert(t != NULL);
-		fillt = &cm->tree[level+1];
-		bottom = (shift <= BYTBITS) ? 1 : 0;
-		cb = (bottom) ? cm->cd[t->tcolor[0]].block : fillt;
-		if (t == fillt || t == cb) {	/* must allocate a new block */
-			newt = (union tree *)MALLOC((bottom) ?
-				sizeof(struct colors) : sizeof(struct ptrs));
-			if (newt == NULL) {
-				CERR(REG_ESPACE);
-				return COLORLESS;
-			}
-			if (bottom)
-				memcpy(VS(newt->tcolor), VS(t->tcolor),
-							BYTTAB*sizeof(color));
-			else
-				memcpy(VS(newt->tptr), VS(t->tptr),
-						BYTTAB*sizeof(union tree *));
-			t = newt;
-			lastt->tptr[b] = t;
-		}
+	    }
+	    if (bottom) {
+		memcpy(newt->tcolor, t->tcolor, BYTTAB*sizeof(color));
+	    } else {
+		memcpy(newt->tptr, t->tptr, BYTTAB*sizeof(union tree *));
+	    }
+	    t = newt;
+	    lastt->tptr[b] = t;
 	}
+    }
 
-	b = uc & BYTMASK;
-	prev = t->tcolor[b];
-	t->tcolor[b] = (color)co;
-	return prev;
+    b = uc & BYTMASK;
+    prev = t->tcolor[b];
+    t->tcolor[b] = (color) co;
+    return prev;
 }
-
+
 /*
  - maxcolor - report largest color number in use
  ^ static color maxcolor(struct colormap *);
  */
 static color
-maxcolor(cm)
-struct colormap *cm;
+maxcolor(
+    struct colormap *cm)
 {
-	if (CISERR())
-		return COLORLESS;
+    if (CISERR()) {
+	return COLORLESS;
+    }
 
-	return (color)cm->max;
+    return (color) cm->max;
 }
-
+
 /*
  - newcolor - find a new color (must be subject of setcolor at once)
- * Beware:  may relocate the colordescs.
+ * Beware: may relocate the colordescs.
  ^ static color newcolor(struct colormap *);
  */
 static color			/* COLORLESS for error */
-newcolor(cm)
-struct colormap *cm;
+newcolor(
+    struct colormap *cm)
 {
-	struct colordesc *cd;
-	struct colordesc *new;
-	size_t n;
-
-	if (CISERR())
-		return COLORLESS;
-
-	if (cm->free != 0) {
-		assert(cm->free > 0);
-		assert((size_t)cm->free < cm->ncds);
-		cd = &cm->cd[cm->free];
-		assert(UNUSEDCOLOR(cd));
-		assert(cd->arcs == NULL);
-		cm->free = cd->sub;
-	} else if (cm->max < cm->ncds - 1) {
-		cm->max++;
-		cd = &cm->cd[cm->max];
+    struct colordesc *cd;
+    size_t n;
+
+    if (CISERR()) {
+	return COLORLESS;
+    }
+
+    if (cm->free != 0) {
+	assert(cm->free > 0);
+	assert((size_t) cm->free < cm->ncds);
+	cd = &cm->cd[cm->free];
+	assert(UNUSEDCOLOR(cd));
+	assert(cd->arcs == NULL);
+	cm->free = cd->sub;
+    } else if (cm->max < cm->ncds - 1) {
+	cm->max++;
+	cd = &cm->cd[cm->max];
+    } else {
+	struct colordesc *newCd;
+
+	/*
+	 * Oops, must allocate more.
+	 */
+
+	n = cm->ncds * 2;
+	if (cm->cd == cm->cdspace) {
+	    newCd = (struct colordesc *) MALLOC(n * sizeof(struct colordesc));
+	    if (newCd != NULL) {
+		memcpy(newCd, cm->cdspace,
+			cm->ncds * sizeof(struct colordesc));
+	    }
 	} else {
-		/* oops, must allocate more */
-		n = cm->ncds * 2;
-		if (cm->cd == cm->cdspace) {
-			new = (struct colordesc *)MALLOC(n *
-						sizeof(struct colordesc));
-			if (new != NULL)
-				memcpy(VS(new), VS(cm->cdspace), cm->ncds *
-						sizeof(struct colordesc));
-		} else
-			new = (struct colordesc *)REALLOC(cm->cd,
-						n * sizeof(struct colordesc));
-		if (new == NULL) {
-			CERR(REG_ESPACE);
-			return COLORLESS;
-		}
-		cm->cd = new;
-		cm->ncds = n;
-		assert(cm->max < cm->ncds - 1);
-		cm->max++;
-		cd = &cm->cd[cm->max];
+	    newCd = (struct colordesc *)
+		    REALLOC(cm->cd, n * sizeof(struct colordesc));
 	}
-
-	cd->nchrs = 0;
-	cd->sub = NOSUB;
-	cd->arcs = NULL;
-	cd->flags = 0;
-	cd->block = NULL;
-
-	return (color)(cd - cm->cd);
+	if (newCd == NULL) {
+	    CERR(REG_ESPACE);
+	    return COLORLESS;
+	}
+	cm->cd = newCd;
+	cm->ncds = n;
+	assert(cm->max < cm->ncds - 1);
+	cm->max++;
+	cd = &cm->cd[cm->max];
+    }
+
+    cd->nchrs = 0;
+    cd->sub = NOSUB;
+    cd->arcs = NULL;
+    cd->flags = 0;
+    cd->block = NULL;
+
+    return (color) (cd - cm->cd);
 }
-
+
 /*
  - freecolor - free a color (must have no arcs or subcolor)
  ^ static VOID freecolor(struct colormap *, pcolor);
  */
-static VOID
-freecolor(cm, co)
-struct colormap *cm;
-pcolor co;
+static void
+freecolor(
+    struct colormap *cm,
+    pcolor co)
 {
-	struct colordesc *cd = &cm->cd[co];
-	color pco, nco;			/* for freelist scan */
-
-	assert(co >= 0);
-	if (co == WHITE)
-		return;
-
-	assert(cd->arcs == NULL);
-	assert(cd->sub == NOSUB);
-	assert(cd->nchrs == 0);
-	cd->flags = FREECOL;
-	if (cd->block != NULL) {
-		FREE(cd->block);
-		cd->block = NULL;	/* just paranoia */
+    struct colordesc *cd = &cm->cd[co];
+    color pco, nco;		/* for freelist scan */
+
+    assert(co >= 0);
+    if (co == WHITE) {
+	return;
+    }
+
+    assert(cd->arcs == NULL);
+    assert(cd->sub == NOSUB);
+    assert(cd->nchrs == 0);
+    cd->flags = FREECOL;
+    if (cd->block != NULL) {
+	FREE(cd->block);
+	cd->block = NULL;	/* just paranoia */
+    }
+
+    if ((size_t) co == cm->max) {
+	while (cm->max > WHITE && UNUSEDCOLOR(&cm->cd[cm->max])) {
+	    cm->max--;
 	}
-
-	if ((size_t)co == cm->max) {
-		while (cm->max > WHITE && UNUSEDCOLOR(&cm->cd[cm->max]))
-			cm->max--;
-		assert(cm->free >= 0);
-		while ((size_t)cm->free > cm->max)
-			cm->free = cm->cd[cm->free].sub;
-		if (cm->free > 0) {
-			assert(cm->free < cm->max);
-			pco = cm->free;
-			nco = cm->cd[pco].sub;
-			while (nco > 0)
-				if ((size_t)nco > cm->max) {
-					/* take this one out of freelist */
-					nco = cm->cd[nco].sub;
-					cm->cd[pco].sub = nco;
-				} else {
-					assert(nco < cm->max);
-					pco = nco;
-					nco = cm->cd[pco].sub;
-				}
+	assert(cm->free >= 0);
+	while ((size_t) cm->free > cm->max) {
+	    cm->free = cm->cd[cm->free].sub;
+	}
+	if (cm->free > 0) {
+	    assert(cm->free < cm->max);
+	    pco = cm->free;
+	    nco = cm->cd[pco].sub;
+	    while (nco > 0) {
+		if ((size_t) nco > cm->max) {
+		    /*
+		     * Take this one out of freelist.
+		     */
+
+		    nco = cm->cd[nco].sub;
+		    cm->cd[pco].sub = nco;
+		} else {
+		    assert(nco < cm->max);
+		    pco = nco;
+		    nco = cm->cd[pco].sub;
 		}
-	} else {
-		cd->sub = cm->free;
-		cm->free = (color)(cd - cm->cd);
+	    }
 	}
+    } else {
+	cd->sub = cm->free;
+	cm->free = (color) (cd - cm->cd);
+    }
 }
-
+
 /*
  - pseudocolor - allocate a false color, to be managed by other means
  ^ static color pseudocolor(struct colormap *);
  */
 static color
-pseudocolor(cm)
-struct colormap *cm;
+pseudocolor(
+    struct colormap *cm)
 {
-	color co;
-
-	co = newcolor(cm);
-	if (CISERR())
-		return COLORLESS;
-	cm->cd[co].nchrs = 1;
-	cm->cd[co].flags = PSEUDO;
-	return co;
+    color co;
+
+    co = newcolor(cm);
+    if (CISERR()) {
+	return COLORLESS;
+    }
+    cm->cd[co].nchrs = 1;
+    cm->cd[co].flags = PSEUDO;
+    return co;
 }
-
+
 /*
  - subcolor - allocate a new subcolor (if necessary) to this chr
  ^ static color subcolor(struct colormap *, pchr c);
  */
 static color
-subcolor(cm, c)
-struct colormap *cm;
-pchr c;
+subcolor(
+    struct colormap *cm,
+    pchr c)
 {
-	color co;			/* current color of c */
-	color sco;			/* new subcolor */
-
-	co = GETCOLOR(cm, c);
-	sco = newsub(cm, co);
-	if (CISERR())
-		return COLORLESS;
-	assert(sco != COLORLESS);
-
-	if (co == sco)		/* already in an open subcolor */
-		return co;	/* rest is redundant */
-	cm->cd[co].nchrs--;
-	cm->cd[sco].nchrs++;
-	setcolor(cm, c, sco);
-	return sco;
+    color co;			/* current color of c */
+    color sco;			/* new subcolor */
+
+    co = GETCOLOR(cm, c);
+    sco = newsub(cm, co);
+    if (CISERR()) {
+	return COLORLESS;
+    }
+    assert(sco != COLORLESS);
+
+    if (co == sco) {		/* already in an open subcolor */
+	return co;		/* rest is redundant */
+    }
+    cm->cd[co].nchrs--;
+    cm->cd[sco].nchrs++;
+    setcolor(cm, c, sco);
+    return sco;
 }
-
+
 /*
  - newsub - allocate a new subcolor (if necessary) for a color
  ^ static color newsub(struct colormap *, pcolor);
  */
 static color
-newsub(cm, co)
-struct colormap *cm;
-pcolor co;
+newsub(
+    struct colormap *cm,
+    pcolor co)
 {
-	color sco;			/* new subcolor */
-
-	sco = cm->cd[co].sub;
-	if (sco == NOSUB) {		/* color has no open subcolor */
-		if (cm->cd[co].nchrs == 1)	/* optimization */
-			return co;
-		sco = newcolor(cm);	/* must create subcolor */
-		if (sco == COLORLESS) {
-			assert(CISERR());
-			return COLORLESS;
-		}
-		cm->cd[co].sub = sco;
-		cm->cd[sco].sub = sco;	/* open subcolor points to self */
+    color sco;			/* new subcolor */
+
+    sco = cm->cd[co].sub;
+    if (sco == NOSUB) {		/* color has no open subcolor */
+	if (cm->cd[co].nchrs == 1) {	/* optimization */
+	    return co;
+	}
+	sco = newcolor(cm);	/* must create subcolor */
+	if (sco == COLORLESS) {
+	    assert(CISERR());
+	    return COLORLESS;
 	}
-	assert(sco != NOSUB);
+	cm->cd[co].sub = sco;
+	cm->cd[sco].sub = sco;	/* open subcolor points to self */
+    }
+    assert(sco != NOSUB);
 
-	return sco;
+    return sco;
 }
-
+
 /*
  - subrange - allocate new subcolors to this range of chrs, fill in arcs
  ^ static VOID subrange(struct vars *, pchr, pchr, struct state *,
  ^ 	struct state *);
  */
-static VOID
-subrange(v, from, to, lp, rp)
-struct vars *v;
-pchr from;
-pchr to;
-struct state *lp;
-struct state *rp;
+static void
+subrange(
+    struct vars *v,
+    pchr from,
+    pchr to,
+    struct state *lp,
+    struct state *rp)
 {
-	uchr uf;
-	int i;
-
-	assert(from <= to);
-
-	/* first, align "from" on a tree-block boundary */
-	uf = (uchr)from;
-	i = (int)( ((uf + BYTTAB-1) & (uchr)~BYTMASK) - uf );
-	for (; from <= to && i > 0; i--, from++)
-		newarc(v->nfa, PLAIN, subcolor(v->cm, from), lp, rp);
-	if (from > to)			/* didn't reach a boundary */
-		return;
-
-	/* deal with whole blocks */
-	for (; to - from >= BYTTAB; from += BYTTAB)
-		subblock(v, from, lp, rp);
-
-	/* clean up any remaining partial table */
-	for (; from <= to; from++)
-		newarc(v->nfa, PLAIN, subcolor(v->cm, from), lp, rp);
+    uchr uf;
+    int i;
+
+    assert(from <= to);
+
+    /*
+     * First, align "from" on a tree-block boundary
+     */
+
+    uf = (uchr) from;
+    i = (int) (((uf + BYTTAB - 1) & (uchr) ~BYTMASK) - uf);
+    for (; from<=to && i>0; i--, from++) {
+	newarc(v->nfa, PLAIN, subcolor(v->cm, from), lp, rp);
+    }
+    if (from > to) {		/* didn't reach a boundary */
+	return;
+    }
+
+    /*
+     * Deal with whole blocks.
+     */
+
+    for (; to-from>=BYTTAB ; from+=BYTTAB) {
+	subblock(v, from, lp, rp);
+    }
+
+    /*
+     * Clean up any remaining partial table.
+     */
+
+    for (; from<=to ; from++) {
+	newarc(v->nfa, PLAIN, subcolor(v->cm, from), lp, rp);
+    }
 }
-
+
 /*
  - subblock - allocate new subcolors for one tree block of chrs, fill in arcs
  ^ static VOID subblock(struct vars *, pchr, struct state *, struct state *);
  */
-static VOID
-subblock(v, start, lp, rp)
-struct vars *v;
-pchr start;			/* first of BYTTAB chrs */
-struct state *lp;
-struct state *rp;
+static void
+subblock(
+    struct vars *v,
+    pchr start,			/* first of BYTTAB chrs */
+    struct state *lp,
+    struct state *rp)
 {
-	uchr uc = start;
-	struct colormap *cm = v->cm;
-	int shift;
-	int level;
-	int i;
-	int b;
-	union tree *t;
-	union tree *cb;
-	union tree *fillt;
-	union tree *lastt;
-	int previ;
-	int ndone;
-	color co;
-	color sco;
-
-	assert((uc % BYTTAB) == 0);
-
-	/* find its color block, making new pointer blocks as needed */
-	t = cm->tree;
-	fillt = NULL;
-	for (level = 0, shift = BYTBITS * (NBYTS - 1); shift > 0;
-						level++, shift -= BYTBITS) {
-		b = (uc >> shift) & BYTMASK;
-		lastt = t;
-		t = lastt->tptr[b];
-		assert(t != NULL);
-		fillt = &cm->tree[level+1];
-		if (t == fillt && shift > BYTBITS) {	/* need new ptr block */
-			t = (union tree *)MALLOC(sizeof(struct ptrs));
-			if (t == NULL) {
-				CERR(REG_ESPACE);
-				return;
-			}
-			memcpy(VS(t->tptr), VS(fillt->tptr),
-						BYTTAB*sizeof(union tree *));
-			lastt->tptr[b] = t;
-		}
+    uchr uc = start;
+    struct colormap *cm = v->cm;
+    int shift;
+    int level;
+    int i;
+    int b;
+    union tree *t;
+    union tree *cb;
+    union tree *fillt;
+    union tree *lastt;
+    int previ;
+    int ndone;
+    color co;
+    color sco;
+
+    assert((uc % BYTTAB) == 0);
+
+    /*
+     * Find its color block, making new pointer blocks as needed.
+     */
+
+    t = cm->tree;
+    fillt = NULL;
+    for (level=0, shift=BYTBITS*(NBYTS-1); shift>0; level++, shift-=BYTBITS) {
+	b = (uc >> shift) & BYTMASK;
+	lastt = t;
+	t = lastt->tptr[b];
+	assert(t != NULL);
+	fillt = &cm->tree[level+1];
+	if (t == fillt && shift > BYTBITS) {	/* need new ptr block */
+	    t = (union tree *) MALLOC(sizeof(struct ptrs));
+	    if (t == NULL) {
+		CERR(REG_ESPACE);
+		return;
+	    }
+	    memcpy(t->tptr, fillt->tptr, BYTTAB*sizeof(union tree *));
+	    lastt->tptr[b] = t;
 	}
+    }
+
+    /*
+     * Special cases: fill block or solid block.
+     */
+    co = t->tcolor[0];
+    cb = cm->cd[co].block;
+    if (t == fillt || t == cb) {
+	/*
+	 * Either way, we want a subcolor solid block.
+	 */
 
-	/* special cases:  fill block or solid block */
-	co = t->tcolor[0];
-	cb = cm->cd[co].block;
-	if (t == fillt || t == cb) {
-		/* either way, we want a subcolor solid block */
-		sco = newsub(cm, co);
-		t = cm->cd[sco].block;
-		if (t == NULL) {	/* must set it up */
-			t = (union tree *)MALLOC(sizeof(struct colors));
-			if (t == NULL) {
-				CERR(REG_ESPACE);
-				return;
-			}
-			for (i = 0; i < BYTTAB; i++)
-				t->tcolor[i] = sco;
-			cm->cd[sco].block = t;
-		}
-		/* find loop must have run at least once */
-		lastt->tptr[b] = t;
-		newarc(v->nfa, PLAIN, sco, lp, rp);
-		cm->cd[co].nchrs -= BYTTAB;
-		cm->cd[sco].nchrs += BYTTAB;
+	sco = newsub(cm, co);
+	t = cm->cd[sco].block;
+	if (t == NULL) {	/* must set it up */
+	    t = (union tree *) MALLOC(sizeof(struct colors));
+	    if (t == NULL) {
+		CERR(REG_ESPACE);
 		return;
+	    }
+	    for (i=0 ; i<BYTTAB ; i++) {
+		t->tcolor[i] = sco;
+	    }
+	    cm->cd[sco].block = t;
 	}
 
-	/* general case, a mixed block to be altered */
-	i = 0;
-	while (i < BYTTAB) {
-		co = t->tcolor[i];
-		sco = newsub(cm, co);
-		newarc(v->nfa, PLAIN, sco, lp, rp);
-		previ = i;
-		do {
-			t->tcolor[i++] = sco;
-		} while (i < BYTTAB && t->tcolor[i] == co);
-		ndone = i - previ;
-		cm->cd[co].nchrs -= ndone;
-		cm->cd[sco].nchrs += ndone;
-	}
-}
+	/*
+	 * Find loop must have run at least once.
+	 */
+
+	lastt->tptr[b] = t;
+	newarc(v->nfa, PLAIN, sco, lp, rp);
+	cm->cd[co].nchrs -= BYTTAB;
+	cm->cd[sco].nchrs += BYTTAB;
+	return;
+    }
+
+    /*
+     * General case, a mixed block to be altered.
+     */
 
+    i = 0;
+    while (i < BYTTAB) {
+	co = t->tcolor[i];
+	sco = newsub(cm, co);
+	newarc(v->nfa, PLAIN, sco, lp, rp);
+	previ = i;
+	do {
+	    t->tcolor[i++] = sco;
+	} while (i < BYTTAB && t->tcolor[i] == co);
+	ndone = i - previ;
+	cm->cd[co].nchrs -= ndone;
+	cm->cd[sco].nchrs += ndone;
+    }
+}
+
 /*
  - okcolors - promote subcolors to full colors
  ^ static VOID okcolors(struct nfa *, struct colormap *);
  */
-static VOID
-okcolors(nfa, cm)
-struct nfa *nfa;
-struct colormap *cm;
+static void
+okcolors(
+    struct nfa *nfa,
+    struct colormap *cm)
 {
-	struct colordesc *cd;
-	struct colordesc *end = CDEND(cm);
-	struct colordesc *scd;
-	struct arc *a;
-	color co;
-	color sco;
-
-	for (cd = cm->cd, co = 0; cd < end; cd++, co++) {
-		sco = cd->sub;
-		if (UNUSEDCOLOR(cd) || sco == NOSUB) {
-			/* has no subcolor, no further action */
-		} else if (sco == co) {
-			/* is subcolor, let parent deal with it */
-		} else if (cd->nchrs == 0) {
-			/* parent empty, its arcs change color to subcolor */
-			cd->sub = NOSUB;
-			scd = &cm->cd[sco];
-			assert(scd->nchrs > 0);
-			assert(scd->sub == sco);
-			scd->sub = NOSUB;
-			while ((a = cd->arcs) != NULL) {
-				assert(a->co == co);
-				uncolorchain(cm, a);
-				a->co = sco;
-				colorchain(cm, a);
-			}
-			freecolor(cm, co);
-		} else {
-			/* parent's arcs must gain parallel subcolor arcs */
-			cd->sub = NOSUB;
-			scd = &cm->cd[sco];
-			assert(scd->nchrs > 0);
-			assert(scd->sub == sco);
-			scd->sub = NOSUB;
-			for (a = cd->arcs; a != NULL; a = a->colorchain) {
-				assert(a->co == co);
-				newarc(nfa, a->type, sco, a->from, a->to);
-			}
-		}
+    struct colordesc *cd;
+    struct colordesc *end = CDEND(cm);
+    struct colordesc *scd;
+    struct arc *a;
+    color co;
+    color sco;
+
+    for (cd=cm->cd, co=0 ; cd<end ; cd++, co++) {
+	sco = cd->sub;
+	if (UNUSEDCOLOR(cd) || sco == NOSUB) {
+	    /*
+	     * Has no subcolor, no further action.
+	     */
+	} else if (sco == co) {
+	    /*
+	     * Is subcolor, let parent deal with it.
+	     */
+	} else if (cd->nchrs == 0) {
+	    /*
+	     * Parent empty, its arcs change color to subcolor.
+	     */
+
+	    cd->sub = NOSUB;
+	    scd = &cm->cd[sco];
+	    assert(scd->nchrs > 0);
+	    assert(scd->sub == sco);
+	    scd->sub = NOSUB;
+	    while ((a = cd->arcs) != NULL) {
+		assert(a->co == co);
+		uncolorchain(cm, a);
+		a->co = sco;
+		colorchain(cm, a);
+	    }
+	    freecolor(cm, co);
+	} else {
+	    /*
+	     * Parent's arcs must gain parallel subcolor arcs.
+	     */
+
+	    cd->sub = NOSUB;
+	    scd = &cm->cd[sco];
+	    assert(scd->nchrs > 0);
+	    assert(scd->sub == sco);
+	    scd->sub = NOSUB;
+	    for (a=cd->arcs ; a!=NULL ; a=a->colorchain) {
+		assert(a->co == co);
+		newarc(nfa, a->type, sco, a->from, a->to);
+	    }
 	}
+    }
 }
-
+
 /*
  - colorchain - add this arc to the color chain of its color
  ^ static VOID colorchain(struct colormap *, struct arc *);
  */
-static VOID
-colorchain(cm, a)
-struct colormap *cm;
-struct arc *a;
+static void
+colorchain(
+    struct colormap *cm,
+    struct arc *a)
 {
-	struct colordesc *cd = &cm->cd[a->co];
-
-	if (cd->arcs)
-		cd->arcs->colorchain_rev = a;
-	a->colorchain = cd->arcs;
-	a->colorchain_rev = NULL;
-	cd->arcs = a;
+    struct colordesc *cd = &cm->cd[a->co];
+
+    if (cd->arcs != NULL) {
+	cd->arcs->colorchainRev = a;
+    }
+    a->colorchain = cd->arcs;
+    a->colorchainRev = NULL;
+    cd->arcs = a;
 }
-
+
 /*
  - uncolorchain - delete this arc from the color chain of its color
  ^ static VOID uncolorchain(struct colormap *, struct arc *);
  */
-static VOID
-uncolorchain(cm, a)
-struct colormap *cm;
-struct arc *a;
-{
-	struct colordesc *cd = &cm->cd[a->co];
-	struct arc *aa = a->colorchain_rev;
-
-	if (aa == NULL) {
-		assert(cd->arcs == a);
-		cd->arcs = a->colorchain;
-	} else {
-		assert(aa->colorchain == a);
-		aa->colorchain = a->colorchain;
-	}
-	if (a->colorchain)
-		a->colorchain->colorchain_rev = aa;
-	a->colorchain = NULL;		/* paranoia */
-	a->colorchain_rev = NULL;
-}
-
-/*
- - singleton - is this character in its own color?
- ^ static int singleton(struct colormap *, pchr c);
- */
-static int			/* predicate */
-singleton(cm, c)
-struct colormap *cm;
-pchr c;
+static void
+uncolorchain(
+    struct colormap *cm,
+    struct arc *a)
 {
-	color co;			/* color of c */
-
-	co = GETCOLOR(cm, c);
-	if (cm->cd[co].nchrs == 1 && cm->cd[co].sub == NOSUB)
-		return 1;
-	return 0;
+    struct colordesc *cd = &cm->cd[a->co];
+    struct arc *aa = a->colorchainRev;
+
+    if (aa == NULL) {
+	assert(cd->arcs == a);
+	cd->arcs = a->colorchain;
+    } else {
+	assert(aa->colorchain == a);
+	aa->colorchain = a->colorchain;
+    }
+    if (a->colorchain != NULL) {
+	a->colorchain->colorchainRev = aa;
+    }
+    a->colorchain = NULL;	/* paranoia */
+    a->colorchainRev = NULL;
 }
-
+
 /*
  - rainbow - add arcs of all full colors (but one) between specified states
  ^ static VOID rainbow(struct nfa *, struct colormap *, int, pcolor,
  ^ 	struct state *, struct state *);
  */
-static VOID
-rainbow(nfa, cm, type, but, from, to)
-struct nfa *nfa;
-struct colormap *cm;
-int type;
-pcolor but;			/* COLORLESS if no exceptions */
-struct state *from;
-struct state *to;
+static void
+rainbow(
+    struct nfa *nfa,
+    struct colormap *cm,
+    int type,
+    pcolor but,			/* COLORLESS if no exceptions */
+    struct state *from,
+    struct state *to)
 {
-	struct colordesc *cd;
-	struct colordesc *end = CDEND(cm);
-	color co;
-
-	for (cd = cm->cd, co = 0; cd < end && !CISERR(); cd++, co++)
-		if (!UNUSEDCOLOR(cd) && cd->sub != co && co != but &&
-							!(cd->flags&PSEUDO))
-			newarc(nfa, type, co, from, to);
+    struct colordesc *cd;
+    struct colordesc *end = CDEND(cm);
+    color co;
+
+    for (cd=cm->cd, co=0 ; cd<end && !CISERR(); cd++, co++) {
+	if (!UNUSEDCOLOR(cd) && (cd->sub != co) && (co != but)
+		&& !(cd->flags&PSEUDO)) {
+	    newarc(nfa, type, co, from, to);
+	}
+    }
 }
-
+
 /*
  - colorcomplement - add arcs of complementary colors
  * The calling sequence ought to be reconciled with cloneouts().
  ^ static VOID colorcomplement(struct nfa *, struct colormap *, int,
  ^ 	struct state *, struct state *, struct state *);
  */
-static VOID
-colorcomplement(nfa, cm, type, of, from, to)
-struct nfa *nfa;
-struct colormap *cm;
-int type;
-struct state *of;		/* complements of this guy's PLAIN outarcs */
-struct state *from;
-struct state *to;
+static void
+colorcomplement(
+    struct nfa *nfa,
+    struct colormap *cm,
+    int type,
+    struct state *of,		/* complements of this guy's PLAIN outarcs */
+    struct state *from,
+    struct state *to)
 {
-	struct colordesc *cd;
-	struct colordesc *end = CDEND(cm);
-	color co;
-
-	assert(of != from);
-	for (cd = cm->cd, co = 0; cd < end && !CISERR(); cd++, co++)
-		if (!UNUSEDCOLOR(cd) && !(cd->flags&PSEUDO))
-			if (findarc(of, PLAIN, co) == NULL)
-				newarc(nfa, type, co, from, to);
+    struct colordesc *cd;
+    struct colordesc *end = CDEND(cm);
+    color co;
+
+    assert(of != from);
+    for (cd=cm->cd, co=0 ; cd<end && !CISERR() ; cd++, co++) {
+	if (!UNUSEDCOLOR(cd) && !(cd->flags&PSEUDO)) {
+	    if (findarc(of, PLAIN, co) == NULL) {
+		newarc(nfa, type, co, from, to);
+	    }
+	}
+    }
 }
-
-
-
+
 #ifdef REG_DEBUG
 /*
  ^ #ifdef REG_DEBUG
@@ -693,87 +743,106 @@ struct state *to;
  - dumpcolors - debugging output
  ^ static VOID dumpcolors(struct colormap *, FILE *);
  */
-static VOID
-dumpcolors(cm, f)
-struct colormap *cm;
-FILE *f;
+static void
+dumpcolors(
+    struct colormap *cm,
+    FILE *f)
 {
-	struct colordesc *cd;
-	struct colordesc *end;
-	color co;
-	chr c;
-	char *has;
-
-	fprintf(f, "max %ld\n", (long)cm->max);
-	if (NBYTS > 1)
-		fillcheck(cm, cm->tree, 0, f);
-	end = CDEND(cm);
-	for (cd = cm->cd + 1, co = 1; cd < end; cd++, co++)	/* skip 0 */
-		if (!UNUSEDCOLOR(cd)) {
-			assert(cd->nchrs > 0);
-			has = (cd->block != NULL) ? "#" : "";
-			if (cd->flags&PSEUDO)
-				fprintf(f, "#%2ld%s(ps): ", (long)co, has);
-			else
-				fprintf(f, "#%2ld%s(%2d): ", (long)co,
-							has, cd->nchrs);
-			/* it's hard to do this more efficiently */
-			for (c = CHR_MIN; c < CHR_MAX; c++)
-				if (GETCOLOR(cm, c) == co)
-					dumpchr(c, f);
-			assert(c == CHR_MAX);
-			if (GETCOLOR(cm, c) == co)
-				dumpchr(c, f);
-			fprintf(f, "\n");
+    struct colordesc *cd;
+    struct colordesc *end;
+    color co;
+    chr c;
+    char *has;
+
+    fprintf(f, "max %ld\n", (long) cm->max);
+    if (NBYTS > 1) {
+	fillcheck(cm, cm->tree, 0, f);
+    }
+    end = CDEND(cm);
+    for (cd=cm->cd+1, co=1 ; cd<end ; cd++, co++) {	/* skip 0 */
+	if (!UNUSEDCOLOR(cd)) {
+	    assert(cd->nchrs > 0);
+	    has = (cd->block != NULL) ? "#" : "";
+	    if (cd->flags&PSEUDO) {
+		fprintf(f, "#%2ld%s(ps): ", (long) co, has);
+	    } else {
+		fprintf(f, "#%2ld%s(%2d): ", (long) co, has, cd->nchrs);
+	    }
+
+	    /*
+	     * It's hard to do this more efficiently.
+	     */
+
+	    for (c=CHR_MIN ; c<CHR_MAX ; c++) {
+		if (GETCOLOR(cm, c) == co) {
+		    dumpchr(c, f);
 		}
+	    }
+	    assert(c == CHR_MAX);
+	    if (GETCOLOR(cm, c) == co) {
+		dumpchr(c, f);
+	    }
+	    fprintf(f, "\n");
+	}
+    }
 }
-
+
 /*
  - fillcheck - check proper filling of a tree
  ^ static VOID fillcheck(struct colormap *, union tree *, int, FILE *);
  */
-static VOID
-fillcheck(cm, tree, level, f)
-struct colormap *cm;
-union tree *tree;
-int level;			/* level number (top == 0) of this block */
-FILE *f;
+static void
+fillcheck(
+    struct colormap *cm,
+    union tree *tree,
+    int level,			/* level number (top == 0) of this block */
+    FILE *f)
 {
-	int i;
-	union tree *t;
-	union tree *fillt = &cm->tree[level+1];
-
-	assert(level < NBYTS-1);	/* this level has pointers */
-	for (i = BYTTAB-1; i >= 0; i--) {
-		t = tree->tptr[i];
-		if (t == NULL)
-			fprintf(f, "NULL found in filled tree!\n");
-		else if (t == fillt)
-			{}
-		else if (level < NBYTS-2)	/* more pointer blocks below */
-			fillcheck(cm, t, level+1, f);
+    int i;
+    union tree *t;
+    union tree *fillt = &cm->tree[level+1];
+
+    assert(level < NBYTS-1);	/* this level has pointers */
+    for (i=BYTTAB-1 ; i>=0 ; i--) {
+	t = tree->tptr[i];
+	if (t == NULL) {
+	    fprintf(f, "NULL found in filled tree!\n");
+	} else if (t == fillt) {
+	    /* empty body */
+	} else if (level < NBYTS-2) {	/* more pointer blocks below */
+	    fillcheck(cm, t, level+1, f);
 	}
+    }
 }
-
+
 /*
  - dumpchr - print a chr
  * Kind of char-centric but works well enough for debug use.
  ^ static VOID dumpchr(pchr, FILE *);
  */
-static VOID
-dumpchr(c, f)
-pchr c;
-FILE *f;
+static void
+dumpchr(
+    pchr c,
+    FILE *f)
 {
-	if (c == '\\')
-		fprintf(f, "\\\\");
-	else if (c > ' ' && c <= '~')
-		putc((char)c, f);
-	else
-		fprintf(f, "\\u%04lx", (long)c);
+    if (c == '\\') {
+	fprintf(f, "\\\\");
+    } else if (c > ' ' && c <= '~') {
+	putc((char) c, f);
+    } else {
+	fprintf(f, "\\u%04lx", (long) c);
+    }
 }
 
 /*
  ^ #endif
  */
 #endif				/* ifdef REG_DEBUG */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regc_cvec.c b/generic/regc_cvec.c
index 0b976b8..64f34cd 100644
--- a/generic/regc_cvec.c
+++ b/generic/regc_cvec.c
@@ -6,7 +6,7 @@
  *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
+ * Corporation, none of whom are responsible for the results. The author
  * thanks all of them.
  *
  * Redistribution and use in source and binary forms -- with or without
@@ -14,8 +14,8 @@
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
  *
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
  *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
@@ -27,149 +27,120 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
 /*
+ * Notes:
+ * Only (selected) functions in _this_ file should treat chr* as non-constant.
+ */
+
+/*
  - newcvec - allocate a new cvec
- ^ static struct cvec *newcvec(int, int, int);
+ ^ static struct cvec *newcvec(int, int);
  */
 static struct cvec *
-newcvec(nchrs, nranges, nmcces)
-    int nchrs;				/* to hold this many chrs... */
-    int nranges;			/* ... and this many ranges... */
-    int nmcces;				/* ... and this many MCCEs */
+newcvec(
+    int nchrs,			/* to hold this many chrs... */
+    int nranges)		/* ... and this many ranges... */
 {
-    size_t n;
-    size_t nc;
-    struct cvec *cv;
+    size_t nc = (size_t)nchrs + (size_t)nranges*2;
+    size_t n = sizeof(struct cvec) + nc*sizeof(chr);
+    struct cvec *cv = (struct cvec *) MALLOC(n);
 
-    nc = (size_t)nchrs + (size_t)nmcces*(MAXMCCE+1) + (size_t)nranges*2;
-    n = sizeof(struct cvec) + (size_t)(nmcces-1)*sizeof(chr *)
-	    + nc*sizeof(chr);
-    cv = (struct cvec *)MALLOC(n);
     if (cv == NULL) {
 	return NULL;
     }
     cv->chrspace = nchrs;
-    cv->chrs = (chr *)&cv->mcces[nmcces];	/* chrs just after MCCE ptrs */
-    cv->mccespace = nmcces;
-    cv->ranges = cv->chrs + nchrs + nmcces*(MAXMCCE+1);
+    cv->chrs = (chr *)(((char *)cv)+sizeof(struct cvec));
+    cv->ranges = cv->chrs + nchrs;
     cv->rangespace = nranges;
     return clearcvec(cv);
 }
-
+
 /*
  - clearcvec - clear a possibly-new cvec
  * Returns pointer as convenience.
  ^ static struct cvec *clearcvec(struct cvec *);
  */
 static struct cvec *
-clearcvec(cv)
-    struct cvec *cv;			/* character vector */
+clearcvec(
+    struct cvec *cv)		/* character vector */
 {
-    int i;
-
     assert(cv != NULL);
     cv->nchrs = 0;
-    assert(cv->chrs == (chr *)&cv->mcces[cv->mccespace]);
-    cv->nmcces = 0;
-    cv->nmccechrs = 0;
     cv->nranges = 0;
-    for (i = 0; i < cv->mccespace; i++) {
-	cv->mcces[i] = NULL;
-    }
-
     return cv;
 }
-
+
 /*
  - addchr - add a chr to a cvec
  ^ static VOID addchr(struct cvec *, pchr);
  */
-static VOID
-addchr(cv, c)
-    struct cvec *cv;			/* character vector */
-    pchr c;				/* character to add */
+static void
+addchr(
+    struct cvec *cv,		/* character vector */
+    pchr c)			/* character to add */
 {
-    assert(cv->nchrs < cv->chrspace - cv->nmccechrs);
     cv->chrs[cv->nchrs++] = (chr)c;
 }
-
+
 /*
  - addrange - add a range to a cvec
  ^ static VOID addrange(struct cvec *, pchr, pchr);
  */
-static VOID
-addrange(cv, from, to)
-    struct cvec *cv;			/* character vector */
-    pchr from;				/* first character of range */
-    pchr to;				/* last character of range */
+static void
+addrange(
+    struct cvec *cv,		/* character vector */
+    pchr from,			/* first character of range */
+    pchr to)			/* last character of range */
 {
     assert(cv->nranges < cv->rangespace);
     cv->ranges[cv->nranges*2] = (chr)from;
     cv->ranges[cv->nranges*2 + 1] = (chr)to;
     cv->nranges++;
 }
-
-/*
- - haschr - does a cvec contain this chr?
- ^ static int haschr(struct cvec *, pchr);
- */
-static int				/* predicate */
-haschr(cv, c)
-    struct cvec *cv;			/* character vector */
-    pchr c;				/* character to test for */
-{
-    int i;
-    chr *p;
-
-    for (p = cv->chrs, i = cv->nchrs; i > 0; p++, i--) {
-	if (*p == c) {
-	    return 1;
-	}
-    }
-    for (p = cv->ranges, i = cv->nranges; i > 0; p += 2, i--) {
-	if ((*p <= c) && (c <= *(p+1))) {
-	    return 1;
-	}
-    }
-    return 0;
-}
-
+
 /*
  - getcvec - get a cvec, remembering it as v->cv
  ^ static struct cvec *getcvec(struct vars *, int, int);
  */
 static struct cvec *
-getcvec(v, nchrs, nranges)
-    struct vars *v;			/* context */
-    int nchrs;				/* to hold this many chrs... */
-    int nranges;			/* ... and this many ranges... */
+getcvec(
+    struct vars *v,		/* context */
+    int nchrs,			/* to hold this many chrs... */
+    int nranges)		/* ... and this many ranges... */
 {
-    if (v->cv != NULL && nchrs <= v->cv->chrspace &&
-	    nranges <= v->cv->rangespace) {
+    if ((v->cv != NULL) && (nchrs <= v->cv->chrspace) &&
+	    (nranges <= v->cv->rangespace)) {
 	return clearcvec(v->cv);
     }
 
     if (v->cv != NULL) {
 	freecvec(v->cv);
     }
-    v->cv = newcvec(nchrs, nranges, 0);
+    v->cv = newcvec(nchrs, nranges);
     if (v->cv == NULL) {
 	ERR(REG_ESPACE);
     }
 
     return v->cv;
 }
-
+
 /*
  - freecvec - free a cvec
  ^ static VOID freecvec(struct cvec *);
  */
-static VOID
-freecvec(cv)
-    struct cvec *cv;			/* character vector */
+static void
+freecvec(
+    struct cvec *cv)		/* character vector */
 {
     FREE(cv);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regc_lex.c b/generic/regc_lex.c
index 99497b9..8d07c59 100644
--- a/generic/regc_lex.c
+++ b/generic/regc_lex.c
@@ -3,20 +3,20 @@
  * This file is #included by regcomp.c.
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -27,7 +27,6 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
 /* scanning macros (know about v) */
@@ -35,9 +34,10 @@
 #define	HAVE(n)		(v->stop - v->now >= (n))
 #define	NEXT1(c)	(!ATEOS() && *v->now == CHR(c))
 #define	NEXT2(a,b)	(HAVE(2) && *v->now == CHR(a) && *(v->now+1) == CHR(b))
-#define	NEXT3(a,b,c)	(HAVE(3) && *v->now == CHR(a) && \
-						*(v->now+1) == CHR(b) && \
-						*(v->now+2) == CHR(c))
+#define	NEXT3(a,b,c) \
+	(HAVE(3) && *v->now == CHR(a) && \
+		*(v->now+1) == CHR(b) && \
+		*(v->now+2) == CHR(c))
 #define	SET(c)		(v->nexttype = (c))
 #define	SETV(c, n)	(v->nexttype = (c), v->nextvalue = (n))
 #define	RET(c)		return (SET(c), 1)
@@ -60,804 +60,907 @@
 
 /* construct pointer past end of chr array */
 #define	ENDOF(array)	((array) + sizeof(array)/sizeof(chr))
-
+
 /*
  - lexstart - set up lexical stuff, scan leading options
  ^ static VOID lexstart(struct vars *);
  */
-static VOID
-lexstart(v)
-struct vars *v;
+static void
+lexstart(
+    struct vars *v)
 {
-	prefixes(v);			/* may turn on new type bits etc. */
-	NOERR();
+    prefixes(v);		/* may turn on new type bits etc. */
+    NOERR();
 
-	if (v->cflags&REG_QUOTE) {
-		assert(!(v->cflags&(REG_ADVANCED|REG_EXPANDED|REG_NEWLINE)));
-		INTOCON(L_Q);
-	} else if (v->cflags&REG_EXTENDED) {
-		assert(!(v->cflags&REG_QUOTE));
-		INTOCON(L_ERE);
-	} else {
-		assert(!(v->cflags&(REG_QUOTE|REG_ADVF)));
-		INTOCON(L_BRE);
-	}
+    if (v->cflags&REG_QUOTE) {
+	assert(!(v->cflags&(REG_ADVANCED|REG_EXPANDED|REG_NEWLINE)));
+	INTOCON(L_Q);
+    } else if (v->cflags&REG_EXTENDED) {
+	assert(!(v->cflags&REG_QUOTE));
+	INTOCON(L_ERE);
+    } else {
+	assert(!(v->cflags&(REG_QUOTE|REG_ADVF)));
+	INTOCON(L_BRE);
+    }
 
-	v->nexttype = EMPTY;		/* remember we were at the start */
-	next(v);			/* set up the first token */
+    v->nexttype = EMPTY;	/* remember we were at the start */
+    next(v);			/* set up the first token */
 }
-
+
 /*
  - prefixes - implement various special prefixes
  ^ static VOID prefixes(struct vars *);
  */
-static VOID
-prefixes(v)
-struct vars *v;
+static void
+prefixes(
+    struct vars *v)
 {
-	/* literal string doesn't get any of this stuff */
-	if (v->cflags&REG_QUOTE)
-		return;
+    /*
+     * Literal string doesn't get any of this stuff.
+     */
 
-	/* initial "***" gets special things */	
-	if (HAVE(4) && NEXT3('*', '*', '*'))
-		switch (*(v->now + 3)) {
-		case CHR('?'):		/* "***?" error, msg shows version */
-			ERR(REG_BADPAT);
-			return;		/* proceed no further */
-			break;
-		case CHR('='):		/* "***=" shifts to literal string */
-			NOTE(REG_UNONPOSIX);
-			v->cflags |= REG_QUOTE;
-			v->cflags &= ~(REG_ADVANCED|REG_EXPANDED|REG_NEWLINE);
-			v->now += 4;
-			return;		/* and there can be no more prefixes */
-			break;
-		case CHR(':'):		/* "***:" shifts to AREs */
-			NOTE(REG_UNONPOSIX);
-			v->cflags |= REG_ADVANCED;
-			v->now += 4;
-			break;
-		default:		/* otherwise *** is just an error */
-			ERR(REG_BADRPT);
-			return;
-			break;
-		}
+    if (v->cflags&REG_QUOTE) {
+	return;
+    }
 
-	/* BREs and EREs don't get embedded options */
-	if ((v->cflags&REG_ADVANCED) != REG_ADVANCED)
-		return;
+    /*
+     * Initial "***" gets special things.
+     */
 
-	/* embedded options (AREs only) */
-	if (HAVE(3) && NEXT2('(', '?') && iscalpha(*(v->now + 2))) {
-		NOTE(REG_UNONPOSIX);
-		v->now += 2;
-		for (; !ATEOS() && iscalpha(*v->now); v->now++)
-			switch (*v->now) {
-			case CHR('b'):		/* BREs (but why???) */
-				v->cflags &= ~(REG_ADVANCED|REG_QUOTE);
-				break;
-			case CHR('c'):		/* case sensitive */
-				v->cflags &= ~REG_ICASE;
-				break;
-			case CHR('e'):		/* plain EREs */
-				v->cflags |= REG_EXTENDED;
-				v->cflags &= ~(REG_ADVF|REG_QUOTE);
-				break;
-			case CHR('i'):		/* case insensitive */
-				v->cflags |= REG_ICASE;
-				break;
-			case CHR('m'):		/* Perloid synonym for n */
-			case CHR('n'):		/* \n affects ^ $ . [^ */
-				v->cflags |= REG_NEWLINE;
-				break;
-			case CHR('p'):		/* ~Perl, \n affects . [^ */
-				v->cflags |= REG_NLSTOP;
-				v->cflags &= ~REG_NLANCH;
-				break;
-			case CHR('q'):		/* literal string */
-				v->cflags |= REG_QUOTE;
-				v->cflags &= ~REG_ADVANCED;
-				break;
-			case CHR('s'):		/* single line, \n ordinary */
-				v->cflags &= ~REG_NEWLINE;
-				break;
-			case CHR('t'):		/* tight syntax */
-				v->cflags &= ~REG_EXPANDED;
-				break;
-			case CHR('w'):		/* weird, \n affects ^ $ only */
-				v->cflags &= ~REG_NLSTOP;
-				v->cflags |= REG_NLANCH;
-				break;
-			case CHR('x'):		/* expanded syntax */
-				v->cflags |= REG_EXPANDED;
-				break;
-			default:
-				ERR(REG_BADOPT);
-				return;
-			}
-		if (!NEXT1(')')) {
-			ERR(REG_BADOPT);
-			return;
-		}
-		v->now++;
-		if (v->cflags&REG_QUOTE)
-			v->cflags &= ~(REG_EXPANDED|REG_NEWLINE);
+    if (HAVE(4) && NEXT3('*', '*', '*')) {
+	switch (*(v->now + 3)) {
+	case CHR('?'):		/* "***?" error, msg shows version */
+	    ERR(REG_BADPAT);
+	    return;		/* proceed no further */
+	    break;
+	case CHR('='):		/* "***=" shifts to literal string */
+	    NOTE(REG_UNONPOSIX);
+	    v->cflags |= REG_QUOTE;
+	    v->cflags &= ~(REG_ADVANCED|REG_EXPANDED|REG_NEWLINE);
+	    v->now += 4;
+	    return;		/* and there can be no more prefixes */
+	    break;
+	case CHR(':'):		/* "***:" shifts to AREs */
+	    NOTE(REG_UNONPOSIX);
+	    v->cflags |= REG_ADVANCED;
+	    v->now += 4;
+	    break;
+	default:		/* otherwise *** is just an error */
+	    ERR(REG_BADRPT);
+	    return;
+	    break;
 	}
-}
+    }
 
+    /*
+     * BREs and EREs don't get embedded options.
+     */
+
+    if ((v->cflags&REG_ADVANCED) != REG_ADVANCED) {
+	return;
+    }
+
+    /*
+     * Embedded options (AREs only).
+     */
+
+    if (HAVE(3) && NEXT2('(', '?') && iscalpha(*(v->now + 2))) {
+	NOTE(REG_UNONPOSIX);
+	v->now += 2;
+	for (; !ATEOS() && iscalpha(*v->now); v->now++) {
+	    switch (*v->now) {
+	    case CHR('b'):	/* BREs (but why???) */
+		v->cflags &= ~(REG_ADVANCED|REG_QUOTE);
+		break;
+	    case CHR('c'):	/* case sensitive */
+		v->cflags &= ~REG_ICASE;
+		break;
+	    case CHR('e'):	/* plain EREs */
+		v->cflags |= REG_EXTENDED;
+		v->cflags &= ~(REG_ADVF|REG_QUOTE);
+		break;
+	    case CHR('i'):	/* case insensitive */
+		v->cflags |= REG_ICASE;
+		break;
+	    case CHR('m'):	/* Perloid synonym for n */
+	    case CHR('n'):	/* \n affects ^ $ . [^ */
+		v->cflags |= REG_NEWLINE;
+		break;
+	    case CHR('p'):	/* ~Perl, \n affects . [^ */
+		v->cflags |= REG_NLSTOP;
+		v->cflags &= ~REG_NLANCH;
+		break;
+	    case CHR('q'):	/* literal string */
+		v->cflags |= REG_QUOTE;
+		v->cflags &= ~REG_ADVANCED;
+		break;
+	    case CHR('s'):	/* single line, \n ordinary */
+		v->cflags &= ~REG_NEWLINE;
+		break;
+	    case CHR('t'):	/* tight syntax */
+		v->cflags &= ~REG_EXPANDED;
+		break;
+	    case CHR('w'):	/* weird, \n affects ^ $ only */
+		v->cflags &= ~REG_NLSTOP;
+		v->cflags |= REG_NLANCH;
+		break;
+	    case CHR('x'):	/* expanded syntax */
+		v->cflags |= REG_EXPANDED;
+		break;
+	    default:
+		ERR(REG_BADOPT);
+		return;
+	    }
+	}
+	if (!NEXT1(')')) {
+	    ERR(REG_BADOPT);
+	    return;
+	}
+	v->now++;
+	if (v->cflags&REG_QUOTE) {
+	    v->cflags &= ~(REG_EXPANDED|REG_NEWLINE);
+	}
+    }
+}
+
 /*
  - lexnest - "call a subroutine", interpolating string at the lexical level
  * Note, this is not a very general facility.  There are a number of
  * implicit assumptions about what sorts of strings can be subroutines.
- ^ static VOID lexnest(struct vars *, chr *, chr *);
+ ^ static VOID lexnest(struct vars *, const chr *, const chr *);
  */
-static VOID
-lexnest(v, beginp, endp)
-struct vars *v;
-CONST chr *beginp;		/* start of interpolation */
-CONST chr *endp;		/* one past end of interpolation */
+static void
+lexnest(
+    struct vars *v,
+    const chr *beginp,		/* start of interpolation */
+    const chr *endp)		/* one past end of interpolation */
 {
-	assert(v->savenow == NULL);	/* only one level of nesting */
-	v->savenow = v->now;
-	v->savestop = v->stop;
-	v->now = beginp;
-	v->stop = endp;
+    assert(v->savenow == NULL);	/* only one level of nesting */
+    v->savenow = v->now;
+    v->savestop = v->stop;
+    v->now = beginp;
+    v->stop = endp;
 }
-
+
 /*
  * string constants to interpolate as expansions of things like \d
  */
-static CONST chr backd[] = {		/* \d */
-	CHR('['), CHR('['), CHR(':'),
-	CHR('d'), CHR('i'), CHR('g'), CHR('i'), CHR('t'),
-	CHR(':'), CHR(']'), CHR(']')
+
+static const chr backd[] = {	/* \d */
+    CHR('['), CHR('['), CHR(':'),
+    CHR('d'), CHR('i'), CHR('g'), CHR('i'), CHR('t'),
+    CHR(':'), CHR(']'), CHR(']')
 };
-static CONST chr backD[] = {		/* \D */
-	CHR('['), CHR('^'), CHR('['), CHR(':'),
-	CHR('d'), CHR('i'), CHR('g'), CHR('i'), CHR('t'),
-	CHR(':'), CHR(']'), CHR(']')
+static const chr backD[] = {	/* \D */
+    CHR('['), CHR('^'), CHR('['), CHR(':'),
+    CHR('d'), CHR('i'), CHR('g'), CHR('i'), CHR('t'),
+    CHR(':'), CHR(']'), CHR(']')
 };
-static CONST chr brbackd[] = {	/* \d within brackets */
-	CHR('['), CHR(':'),
-	CHR('d'), CHR('i'), CHR('g'), CHR('i'), CHR('t'),
-	CHR(':'), CHR(']')
+static const chr brbackd[] = {	/* \d within brackets */
+    CHR('['), CHR(':'),
+    CHR('d'), CHR('i'), CHR('g'), CHR('i'), CHR('t'),
+    CHR(':'), CHR(']')
 };
-static CONST chr backs[] = {		/* \s */
-	CHR('['), CHR('['), CHR(':'),
-	CHR('s'), CHR('p'), CHR('a'), CHR('c'), CHR('e'),
-	CHR(':'), CHR(']'), CHR(']')
+static const chr backs[] = {	/* \s */
+    CHR('['), CHR('['), CHR(':'),
+    CHR('s'), CHR('p'), CHR('a'), CHR('c'), CHR('e'),
+    CHR(':'), CHR(']'), CHR(']')
 };
-static CONST chr backS[] = {		/* \S */
-	CHR('['), CHR('^'), CHR('['), CHR(':'),
-	CHR('s'), CHR('p'), CHR('a'), CHR('c'), CHR('e'),
-	CHR(':'), CHR(']'), CHR(']')
+static const chr backS[] = {	/* \S */
+    CHR('['), CHR('^'), CHR('['), CHR(':'),
+    CHR('s'), CHR('p'), CHR('a'), CHR('c'), CHR('e'),
+    CHR(':'), CHR(']'), CHR(']')
 };
-static CONST chr brbacks[] = {	/* \s within brackets */
-	CHR('['), CHR(':'),
-	CHR('s'), CHR('p'), CHR('a'), CHR('c'), CHR('e'),
-	CHR(':'), CHR(']')
+static const chr brbacks[] = {	/* \s within brackets */
+    CHR('['), CHR(':'),
+    CHR('s'), CHR('p'), CHR('a'), CHR('c'), CHR('e'),
+    CHR(':'), CHR(']')
 };
-static CONST chr backw[] = {		/* \w */
-	CHR('['), CHR('['), CHR(':'),
-	CHR('a'), CHR('l'), CHR('n'), CHR('u'), CHR('m'),
-	CHR(':'), CHR(']'), CHR('_'), CHR(']')
+static const chr backw[] = {	/* \w */
+    CHR('['), CHR('['), CHR(':'),
+    CHR('a'), CHR('l'), CHR('n'), CHR('u'), CHR('m'),
+    CHR(':'), CHR(']'), CHR('_'), CHR(']')
 };
-static CONST chr backW[] = {		/* \W */
-	CHR('['), CHR('^'), CHR('['), CHR(':'),
-	CHR('a'), CHR('l'), CHR('n'), CHR('u'), CHR('m'),
-	CHR(':'), CHR(']'), CHR('_'), CHR(']')
+static const chr backW[] = {	/* \W */
+    CHR('['), CHR('^'), CHR('['), CHR(':'),
+    CHR('a'), CHR('l'), CHR('n'), CHR('u'), CHR('m'),
+    CHR(':'), CHR(']'), CHR('_'), CHR(']')
 };
-static CONST chr brbackw[] = {	/* \w within brackets */
-	CHR('['), CHR(':'),
-	CHR('a'), CHR('l'), CHR('n'), CHR('u'), CHR('m'),
-	CHR(':'), CHR(']'), CHR('_')
+static const chr brbackw[] = {	/* \w within brackets */
+    CHR('['), CHR(':'),
+    CHR('a'), CHR('l'), CHR('n'), CHR('u'), CHR('m'),
+    CHR(':'), CHR(']'), CHR('_')
 };
-
+
 /*
  - lexword - interpolate a bracket expression for word characters
  * Possibly ought to inquire whether there is a "word" character class.
  ^ static VOID lexword(struct vars *);
  */
-static VOID
-lexword(v)
-struct vars *v;
+static void
+lexword(
+    struct vars *v)
 {
-	lexnest(v, backw, ENDOF(backw));
+    lexnest(v, backw, ENDOF(backw));
 }
-
+
 /*
  - next - get next token
  ^ static int next(struct vars *);
  */
 static int			/* 1 normal, 0 failure */
-next(v)
-struct vars *v;
+next(
+    struct vars *v)
 {
-	chr c;
+    chr c;
 
-	/* errors yield an infinite sequence of failures */
-	if (ISERR())
-		return 0;	/* the error has set nexttype to EOS */
+    /*
+     * Errors yield an infinite sequence of failures.
+     */
 
-	/* remember flavor of last token */
-	v->lasttype = v->nexttype;
+    if (ISERR()) {
+	return 0;		/* the error has set nexttype to EOS */
+    }
 
-	/* REG_BOSONLY */
-	if (v->nexttype == EMPTY && (v->cflags&REG_BOSONLY)) {
-		/* at start of a REG_BOSONLY RE */
-		RETV(SBEGIN, 0);		/* same as \A */
-	}
+    /*
+     * Remember flavor of last token.
+     */
 
-	/* if we're nested and we've hit end, return to outer level */
-	if (v->savenow != NULL && ATEOS()) {
-		v->now = v->savenow;
-		v->stop = v->savestop;
-		v->savenow = v->savestop = NULL;
-	}
+    v->lasttype = v->nexttype;
 
-	/* skip white space etc. if appropriate (not in literal or []) */
-	if (v->cflags&REG_EXPANDED)
-		switch (v->lexcon) {
-		case L_ERE:
-		case L_BRE:
-		case L_EBND:
-		case L_BBND:
-			skip(v);
-			break;
-		}
+    /*
+     * REG_BOSONLY
+     */
 
-	/* handle EOS, depending on context */
-	if (ATEOS()) {
-		switch (v->lexcon) {
-		case L_ERE:
-		case L_BRE:
-		case L_Q:
-			RET(EOS);
-			break;
-		case L_EBND:
-		case L_BBND:
-			FAILW(REG_EBRACE);
-			break;
-		case L_BRACK:
-		case L_CEL:
-		case L_ECL:
-		case L_CCL:
-			FAILW(REG_EBRACK);
-			break;
-		}
-		assert(NOTREACHED);
+    if (v->nexttype == EMPTY && (v->cflags&REG_BOSONLY)) {
+	/* at start of a REG_BOSONLY RE */
+	RETV(SBEGIN, 0);	/* same as \A */
+    }
+
+    /*
+     * If we're nested and we've hit end, return to outer level.
+     */
+
+    if (v->savenow != NULL && ATEOS()) {
+	v->now = v->savenow;
+	v->stop = v->savestop;
+	v->savenow = v->savestop = NULL;
+    }
+
+    /*
+     * Skip white space etc. if appropriate (not in literal or [])
+     */
+
+    if (v->cflags&REG_EXPANDED) {
+	switch (v->lexcon) {
+	case L_ERE:
+	case L_BRE:
+	case L_EBND:
+	case L_BBND:
+	    skip(v);
+	    break;
 	}
+    }
 
-	/* okay, time to actually get a character */
-	c = *v->now++;
+    /*
+     * Handle EOS, depending on context.
+     */
 
-	/* deal with the easy contexts, punt EREs to code below */
+    if (ATEOS()) {
 	switch (v->lexcon) {
-	case L_BRE:			/* punt BREs to separate function */
-		return brenext(v, c);
-		break;
-	case L_ERE:			/* see below */
-		break;
-	case L_Q:			/* literal strings are easy */
-		RETV(PLAIN, c);
-		break;
-	case L_BBND:			/* bounds are fairly simple */
+	case L_ERE:
+	case L_BRE:
+	case L_Q:
+	    RET(EOS);
+	    break;
 	case L_EBND:
-		switch (c) {
-		case CHR('0'): case CHR('1'): case CHR('2'): case CHR('3'):
-		case CHR('4'): case CHR('5'): case CHR('6'): case CHR('7'):
-		case CHR('8'): case CHR('9'):
-			RETV(DIGIT, (chr)DIGITVAL(c));
-			break;
-		case CHR(','):
-			RET(',');
-			break;
-		case CHR('}'):		/* ERE bound ends with } */
-			if (INCON(L_EBND)) {
-				INTOCON(L_ERE);
-				if ((v->cflags&REG_ADVF) && NEXT1('?')) {
-					v->now++;
-					NOTE(REG_UNONPOSIX);
-					RETV('}', 0);
-				}
-				RETV('}', 1);
-			} else
-				FAILW(REG_BADBR);
-			break;
-		case CHR('\\'):		/* BRE bound ends with \} */
-			if (INCON(L_BBND) && NEXT1('}')) {
-				v->now++;
-				INTOCON(L_BRE);
-				RET('}');
-			} else
-				FAILW(REG_BADBR);
-			break;
-		default:
-			FAILW(REG_BADBR);
-			break;
-		}
-		assert(NOTREACHED);
-		break;
-	case L_BRACK:			/* brackets are not too hard */
-		switch (c) {
-		case CHR(']'):
-			if (LASTTYPE('['))
-				RETV(PLAIN, c);
-			else {
-				INTOCON((v->cflags&REG_EXTENDED) ?
-							L_ERE : L_BRE);
-				RET(']');
-			}
-			break;
-		case CHR('\\'):
-			NOTE(REG_UBBS);
-			if (!(v->cflags&REG_ADVF))
-				RETV(PLAIN, c);
-			NOTE(REG_UNONPOSIX);
-			if (ATEOS())
-				FAILW(REG_EESCAPE);
-			(DISCARD)lexescape(v);
-			switch (v->nexttype) {	/* not all escapes okay here */
-			case PLAIN:
-				return 1;
-				break;
-			case CCLASS:
-				switch (v->nextvalue) {
-				case 'd':
-					lexnest(v, brbackd, ENDOF(brbackd));
-					break;
-				case 's':
-					lexnest(v, brbacks, ENDOF(brbacks));
-					break;
-				case 'w':
-					lexnest(v, brbackw, ENDOF(brbackw));
-					break;
-				default:
-					FAILW(REG_EESCAPE);
-					break;
-				}
-				/* lexnest done, back up and try again */
-				v->nexttype = v->lasttype;
-				return next(v);
-				break;
-			}
-			/* not one of the acceptable escapes */
-			FAILW(REG_EESCAPE);
-			break;
-		case CHR('-'):
-			if (LASTTYPE('[') || NEXT1(']'))
-				RETV(PLAIN, c);
-			else
-				RETV(RANGE, c);
-			break;
-		case CHR('['):
-			if (ATEOS())
-				FAILW(REG_EBRACK);
-			switch (*v->now++) {
-			case CHR('.'):
-				INTOCON(L_CEL);
-				/* might or might not be locale-specific */
-				RET(COLLEL);
-				break;
-			case CHR('='):
-				INTOCON(L_ECL);
-				NOTE(REG_ULOCALE);
-				RET(ECLASS);
-				break;
-			case CHR(':'):
-				INTOCON(L_CCL);
-				NOTE(REG_ULOCALE);
-				RET(CCLASS);
-				break;
-			default:			/* oops */
-				v->now--;
-				RETV(PLAIN, c);
-				break;
-			}
-			assert(NOTREACHED);
-			break;
-		default:
-			RETV(PLAIN, c);
-			break;
-		}
-		assert(NOTREACHED);
-		break;
-	case L_CEL:			/* collating elements are easy */
-		if (c == CHR('.') && NEXT1(']')) {
-			v->now++;
-			INTOCON(L_BRACK);
-			RETV(END, '.');
-		} else
-			RETV(PLAIN, c);
-		break;
-	case L_ECL:			/* ditto equivalence classes */
-		if (c == CHR('=') && NEXT1(']')) {
-			v->now++;
-			INTOCON(L_BRACK);
-			RETV(END, '=');
-		} else
-			RETV(PLAIN, c);
-		break;
-	case L_CCL:			/* ditto character classes */
-		if (c == CHR(':') && NEXT1(']')) {
-			v->now++;
-			INTOCON(L_BRACK);
-			RETV(END, ':');
-		} else
-			RETV(PLAIN, c);
-		break;
-	default:
-		assert(NOTREACHED);
-		break;
+	case L_BBND:
+	    FAILW(REG_EBRACE);
+	    break;
+	case L_BRACK:
+	case L_CEL:
+	case L_ECL:
+	case L_CCL:
+	    FAILW(REG_EBRACK);
+	    break;
 	}
+	assert(NOTREACHED);
+    }
+
+    /*
+     * Okay, time to actually get a character.
+     */
+
+    c = *v->now++;
 
-	/* that got rid of everything except EREs and AREs */
-	assert(INCON(L_ERE));
+    /*
+     * Deal with the easy contexts, punt EREs to code below.
+     */
 
-	/* deal with EREs and AREs, except for backslashes */
+    switch (v->lexcon) {
+    case L_BRE:			/* punt BREs to separate function */
+	return brenext(v, c);
+	break;
+    case L_ERE:			/* see below */
+	break;
+    case L_Q:			/* literal strings are easy */
+	RETV(PLAIN, c);
+	break;
+    case L_BBND:		/* bounds are fairly simple */
+    case L_EBND:
 	switch (c) {
-	case CHR('|'):
-		RET('|');
-		break;
-	case CHR('*'):
+	case CHR('0'): case CHR('1'): case CHR('2'): case CHR('3'):
+	case CHR('4'): case CHR('5'): case CHR('6'): case CHR('7'):
+	case CHR('8'): case CHR('9'):
+	    RETV(DIGIT, (chr)DIGITVAL(c));
+	    break;
+	case CHR(','):
+	    RET(',');
+	    break;
+	case CHR('}'):		/* ERE bound ends with } */
+	    if (INCON(L_EBND)) {
+		INTOCON(L_ERE);
 		if ((v->cflags&REG_ADVF) && NEXT1('?')) {
-			v->now++;
-			NOTE(REG_UNONPOSIX);
-			RETV('*', 0);
+		    v->now++;
+		    NOTE(REG_UNONPOSIX);
+		    RETV('}', 0);
 		}
-		RETV('*', 1);
+		RETV('}', 1);
+	    } else {
+		FAILW(REG_BADBR);
+	    }
+	    break;
+	case CHR('\\'):		/* BRE bound ends with \} */
+	    if (INCON(L_BBND) && NEXT1('}')) {
+		v->now++;
+		INTOCON(L_BRE);
+		RET('}');
+	    } else {
+		FAILW(REG_BADBR);
+	    }
+	    break;
+	default:
+	    FAILW(REG_BADBR);
+	    break;
+	}
+	assert(NOTREACHED);
+	break;
+    case L_BRACK:		/* brackets are not too hard */
+	switch (c) {
+	case CHR(']'):
+	    if (LASTTYPE('[')) {
+		RETV(PLAIN, c);
+	    } else {
+		INTOCON((v->cflags&REG_EXTENDED) ? L_ERE : L_BRE);
+		RET(']');
+	    }
+	    break;
+	case CHR('\\'):
+	    NOTE(REG_UBBS);
+	    if (!(v->cflags&REG_ADVF)) {
+		RETV(PLAIN, c);
+	    }
+	    NOTE(REG_UNONPOSIX);
+	    if (ATEOS()) {
+		FAILW(REG_EESCAPE);
+	    }
+	    (DISCARD)lexescape(v);
+	    switch (v->nexttype) {	/* not all escapes okay here */
+	    case PLAIN:
+		return 1;
 		break;
-	case CHR('+'):
-		if ((v->cflags&REG_ADVF) && NEXT1('?')) {
-			v->now++;
-			NOTE(REG_UNONPOSIX);
-			RETV('+', 0);
+	    case CCLASS:
+		switch (v->nextvalue) {
+		case 'd':
+		    lexnest(v, brbackd, ENDOF(brbackd));
+		    break;
+		case 's':
+		    lexnest(v, brbacks, ENDOF(brbacks));
+		    break;
+		case 'w':
+		    lexnest(v, brbackw, ENDOF(brbackw));
+		    break;
+		default:
+		    FAILW(REG_EESCAPE);
+		    break;
 		}
-		RETV('+', 1);
+
+		/*
+		 * lexnest() done, back up and try again.
+		 */
+
+		v->nexttype = v->lasttype;
+		return next(v);
 		break;
-	case CHR('?'):
-		if ((v->cflags&REG_ADVF) && NEXT1('?')) {
-			v->now++;
-			NOTE(REG_UNONPOSIX);
-			RETV('?', 0);
-		}
-		RETV('?', 1);
+	    }
+
+	    /*
+	     * Not one of the acceptable escapes.
+	     */
+
+	    FAILW(REG_EESCAPE);
+	    break;
+	case CHR('-'):
+	    if (LASTTYPE('[') || NEXT1(']')) {
+		RETV(PLAIN, c);
+	    } else {
+		RETV(RANGE, c);
+	    }
+	    break;
+	case CHR('['):
+	    if (ATEOS()) {
+		FAILW(REG_EBRACK);
+	    }
+	    switch (*v->now++) {
+	    case CHR('.'):
+		INTOCON(L_CEL);
+
+		/*
+		 * Might or might not be locale-specific.
+		 */
+
+		RET(COLLEL);
 		break;
-	case CHR('{'):		/* bounds start or plain character */
-		if (v->cflags&REG_EXPANDED)
-			skip(v);
-		if (ATEOS() || !iscdigit(*v->now)) {
-			NOTE(REG_UBRACES);
-			NOTE(REG_UUNSPEC);
-			RETV(PLAIN, c);
-		} else {
-			NOTE(REG_UBOUNDS);
-			INTOCON(L_EBND);
-			RET('{');
-		}
-		assert(NOTREACHED);
+	    case CHR('='):
+		INTOCON(L_ECL);
+		NOTE(REG_ULOCALE);
+		RET(ECLASS);
 		break;
-	case CHR('('):		/* parenthesis, or advanced extension */
-		if ((v->cflags&REG_ADVF) && NEXT1('?')) {
-			NOTE(REG_UNONPOSIX);
-			v->now++;
-			switch (*v->now++) {
-			case CHR(':'):		/* non-capturing paren */
-				RETV('(', 0);
-				break;
-			case CHR('#'):		/* comment */
-				while (!ATEOS() && *v->now != CHR(')'))
-					v->now++;
-				if (!ATEOS())
-					v->now++;
-				assert(v->nexttype == v->lasttype);
-				return next(v);
-				break;
-			case CHR('='):		/* positive lookahead */
-				NOTE(REG_ULOOKAHEAD);
-				RETV(LACON, 1);
-				break;
-			case CHR('!'):		/* negative lookahead */
-				NOTE(REG_ULOOKAHEAD);
-				RETV(LACON, 0);
-				break;
-			default:
-				FAILW(REG_BADRPT);
-				break;
-			}
-			assert(NOTREACHED);
-		}
-		if (v->cflags&REG_NOSUB)
-			RETV('(', 0);		/* all parens non-capturing */
-		else
-			RETV('(', 1);
+	    case CHR(':'):
+		INTOCON(L_CCL);
+		NOTE(REG_ULOCALE);
+		RET(CCLASS);
 		break;
-	case CHR(')'):
-		if (LASTTYPE('(')) {
-			NOTE(REG_UUNSPEC);
-		}
-		RETV(')', c);
+	    default:		/* oops */
+		v->now--;
+		RETV(PLAIN, c);
 		break;
-	case CHR('['):		/* easy except for [[:<:]] and [[:>:]] */
-		if (HAVE(6) &&	*(v->now+0) == CHR('[') &&
-				*(v->now+1) == CHR(':') &&
-				(*(v->now+2) == CHR('<') ||
-						*(v->now+2) == CHR('>')) &&
-				*(v->now+3) == CHR(':') &&
-				*(v->now+4) == CHR(']') &&
-				*(v->now+5) == CHR(']')) {
-			c = *(v->now+2);
-			v->now += 6;
-			NOTE(REG_UNONPOSIX);
-			RET((c == CHR('<')) ? '<' : '>');
+	    }
+	    assert(NOTREACHED);
+	    break;
+	default:
+	    RETV(PLAIN, c);
+	    break;
+	}
+	assert(NOTREACHED);
+	break;
+    case L_CEL:			/* collating elements are easy */
+	if (c == CHR('.') && NEXT1(']')) {
+	    v->now++;
+	    INTOCON(L_BRACK);
+	    RETV(END, '.');
+	} else {
+	    RETV(PLAIN, c);
+	}
+	break;
+    case L_ECL:			/* ditto equivalence classes */
+	if (c == CHR('=') && NEXT1(']')) {
+	    v->now++;
+	    INTOCON(L_BRACK);
+	    RETV(END, '=');
+	} else {
+	    RETV(PLAIN, c);
+	}
+	break;
+    case L_CCL:			/* ditto character classes */
+	if (c == CHR(':') && NEXT1(']')) {
+	    v->now++;
+	    INTOCON(L_BRACK);
+	    RETV(END, ':');
+	} else {
+	    RETV(PLAIN, c);
+	}
+	break;
+    default:
+	assert(NOTREACHED);
+	break;
+    }
+
+    /*
+     * That got rid of everything except EREs and AREs.
+     */
+
+    assert(INCON(L_ERE));
+
+    /*
+     * Deal with EREs and AREs, except for backslashes.
+     */
+
+    switch (c) {
+    case CHR('|'):
+	RET('|');
+	break;
+    case CHR('*'):
+	if ((v->cflags&REG_ADVF) && NEXT1('?')) {
+	    v->now++;
+	    NOTE(REG_UNONPOSIX);
+	    RETV('*', 0);
+	}
+	RETV('*', 1);
+	break;
+    case CHR('+'):
+	if ((v->cflags&REG_ADVF) && NEXT1('?')) {
+	    v->now++;
+	    NOTE(REG_UNONPOSIX);
+	    RETV('+', 0);
+	}
+	RETV('+', 1);
+	break;
+    case CHR('?'):
+	if ((v->cflags&REG_ADVF) && NEXT1('?')) {
+	    v->now++;
+	    NOTE(REG_UNONPOSIX);
+	    RETV('?', 0);
+	}
+	RETV('?', 1);
+	break;
+    case CHR('{'):		/* bounds start or plain character */
+	if (v->cflags&REG_EXPANDED) {
+	    skip(v);
+	}
+	if (ATEOS() || !iscdigit(*v->now)) {
+	    NOTE(REG_UBRACES);
+	    NOTE(REG_UUNSPEC);
+	    RETV(PLAIN, c);
+	} else {
+	    NOTE(REG_UBOUNDS);
+	    INTOCON(L_EBND);
+	    RET('{');
+	}
+	assert(NOTREACHED);
+	break;
+    case CHR('('):		/* parenthesis, or advanced extension */
+	if ((v->cflags&REG_ADVF) && NEXT1('?')) {
+	    NOTE(REG_UNONPOSIX);
+	    v->now++;
+	    switch (*v->now++) {
+	    case CHR(':'):	/* non-capturing paren */
+		RETV('(', 0);
+		break;
+	    case CHR('#'):	/* comment */
+		while (!ATEOS() && *v->now != CHR(')')) {
+		    v->now++;
 		}
-		INTOCON(L_BRACK);
-		if (NEXT1('^')) {
-			v->now++;
-			RETV('[', 0);
+		if (!ATEOS()) {
+		    v->now++;
 		}
-		RETV('[', 1);
-		break;
-	case CHR('.'):
-		RET('.');
+		assert(v->nexttype == v->lasttype);
+		return next(v);
 		break;
-	case CHR('^'):
-		RET('^');
+	    case CHR('='):	/* positive lookahead */
+		NOTE(REG_ULOOKAHEAD);
+		RETV(LACON, 1);
 		break;
-	case CHR('$'):
-		RET('$');
+	    case CHR('!'):	/* negative lookahead */
+		NOTE(REG_ULOOKAHEAD);
+		RETV(LACON, 0);
 		break;
-	case CHR('\\'):		/* mostly punt backslashes to code below */
-		if (ATEOS())
-			FAILW(REG_EESCAPE);
-		break;
-	default:		/* ordinary character */
-		RETV(PLAIN, c);
+	    default:
+		FAILW(REG_BADRPT);
 		break;
+	    }
+	    assert(NOTREACHED);
+	}
+	if (v->cflags&REG_NOSUB) {
+	    RETV('(', 0);	/* all parens non-capturing */
+	} else {
+	    RETV('(', 1);
+	}
+	break;
+    case CHR(')'):
+	if (LASTTYPE('(')) {
+	    NOTE(REG_UUNSPEC);
+	}
+	RETV(')', c);
+	break;
+    case CHR('['):		/* easy except for [[:<:]] and [[:>:]] */
+	if (HAVE(6) &&	*(v->now+0) == CHR('[') &&
+		*(v->now+1) == CHR(':') &&
+		(*(v->now+2) == CHR('<') || *(v->now+2) == CHR('>')) &&
+		*(v->now+3) == CHR(':') &&
+		*(v->now+4) == CHR(']') &&
+		*(v->now+5) == CHR(']')) {
+	    c = *(v->now+2);
+	    v->now += 6;
+	    NOTE(REG_UNONPOSIX);
+	    RET((c == CHR('<')) ? '<' : '>');
+	}
+	INTOCON(L_BRACK);
+	if (NEXT1('^')) {
+	    v->now++;
+	    RETV('[', 0);
+	}
+	RETV('[', 1);
+	break;
+    case CHR('.'):
+	RET('.');
+	break;
+    case CHR('^'):
+	RET('^');
+	break;
+    case CHR('$'):
+	RET('$');
+	break;
+    case CHR('\\'):		/* mostly punt backslashes to code below */
+	if (ATEOS()) {
+	    FAILW(REG_EESCAPE);
 	}
+	break;
+    default:		/* ordinary character */
+	RETV(PLAIN, c);
+	break;
+    }
 
-	/* ERE/ARE backslash handling; backslash already eaten */
-	assert(!ATEOS());
-	if (!(v->cflags&REG_ADVF)) {	/* only AREs have non-trivial escapes */
-		if (iscalnum(*v->now)) {
-			NOTE(REG_UBSALNUM);
-			NOTE(REG_UUNSPEC);
-		}
-		RETV(PLAIN, *v->now++);
+    /*
+     * ERE/ARE backslash handling; backslash already eaten.
+     */
+
+    assert(!ATEOS());
+    if (!(v->cflags&REG_ADVF)) {/* only AREs have non-trivial escapes */
+	if (iscalnum(*v->now)) {
+	    NOTE(REG_UBSALNUM);
+	    NOTE(REG_UUNSPEC);
 	}
-	(DISCARD)lexescape(v);
-	if (ISERR())
-		FAILW(REG_EESCAPE);
-	if (v->nexttype == CCLASS) {	/* fudge at lexical level */
-		switch (v->nextvalue) {
-		case 'd':	lexnest(v, backd, ENDOF(backd)); break;
-		case 'D':	lexnest(v, backD, ENDOF(backD)); break;
-		case 's':	lexnest(v, backs, ENDOF(backs)); break;
-		case 'S':	lexnest(v, backS, ENDOF(backS)); break;
-		case 'w':	lexnest(v, backw, ENDOF(backw)); break;
-		case 'W':	lexnest(v, backW, ENDOF(backW)); break;
-		default:
-			assert(NOTREACHED);
-			FAILW(REG_ASSERT);
-			break;
-		}
-		/* lexnest done, back up and try again */
-		v->nexttype = v->lasttype;
-		return next(v);
+	RETV(PLAIN, *v->now++);
+    }
+    (DISCARD)lexescape(v);
+    if (ISERR()) {
+	FAILW(REG_EESCAPE);
+    }
+    if (v->nexttype == CCLASS) {/* fudge at lexical level */
+	switch (v->nextvalue) {
+	case 'd':	lexnest(v, backd, ENDOF(backd)); break;
+	case 'D':	lexnest(v, backD, ENDOF(backD)); break;
+	case 's':	lexnest(v, backs, ENDOF(backs)); break;
+	case 'S':	lexnest(v, backS, ENDOF(backS)); break;
+	case 'w':	lexnest(v, backw, ENDOF(backw)); break;
+	case 'W':	lexnest(v, backW, ENDOF(backW)); break;
+	default:
+	    assert(NOTREACHED);
+	    FAILW(REG_ASSERT);
+	    break;
 	}
-	/* otherwise, lexescape has already done the work */
-	return !ISERR();
-}
+	/* lexnest done, back up and try again */
+	v->nexttype = v->lasttype;
+	return next(v);
+    }
+
+    /*
+     * Otherwise, lexescape has already done the work.
+     */
 
+    return !ISERR();
+}
+
 /*
  - lexescape - parse an ARE backslash escape (backslash already eaten)
  * Note slightly nonstandard use of the CCLASS type code.
  ^ static int lexescape(struct vars *);
  */
 static int			/* not actually used, but convenient for RETV */
-lexescape(v)
-struct vars *v;
+lexescape(
+    struct vars *v)
 {
-	chr c;
-	static CONST chr alert[] = {
-		CHR('a'), CHR('l'), CHR('e'), CHR('r'), CHR('t')
-	};
-	static CONST chr esc[] = {
-		CHR('E'), CHR('S'), CHR('C')
-	};
-	CONST chr *save;
-
-	assert(v->cflags&REG_ADVF);
-
-	assert(!ATEOS());
-	c = *v->now++;
-	if (!iscalnum(c))
-		RETV(PLAIN, c);
+    chr c;
+    static const chr alert[] = {
+	CHR('a'), CHR('l'), CHR('e'), CHR('r'), CHR('t')
+    };
+    static const chr esc[] = {
+	CHR('E'), CHR('S'), CHR('C')
+    };
+    const chr *save;
 
-	NOTE(REG_UNONPOSIX);
-	switch (c) {
-	case CHR('a'):
-		RETV(PLAIN, chrnamed(v, alert, ENDOF(alert), CHR('\007')));
-		break;
-	case CHR('A'):
-		RETV(SBEGIN, 0);
-		break;
-	case CHR('b'):
-		RETV(PLAIN, CHR('\b'));
-		break;
-	case CHR('B'):
-		RETV(PLAIN, CHR('\\'));
-		break;
-	case CHR('c'):
-		NOTE(REG_UUNPORT);
-		if (ATEOS())
-			FAILW(REG_EESCAPE);
-		RETV(PLAIN, (chr)(*v->now++ & 037));
-		break;
-	case CHR('d'):
-		NOTE(REG_ULOCALE);
-		RETV(CCLASS, 'd');
-		break;
-	case CHR('D'):
-		NOTE(REG_ULOCALE);
-		RETV(CCLASS, 'D');
-		break;
-	case CHR('e'):
-		NOTE(REG_UUNPORT);
-		RETV(PLAIN, chrnamed(v, esc, ENDOF(esc), CHR('\033')));
-		break;
-	case CHR('f'):
-		RETV(PLAIN, CHR('\f'));
-		break;
-	case CHR('m'):
-		RET('<');
-		break;
-	case CHR('M'):
-		RET('>');
-		break;
-	case CHR('n'):
-		RETV(PLAIN, CHR('\n'));
-		break;
-	case CHR('r'):
-		RETV(PLAIN, CHR('\r'));
-		break;
-	case CHR('s'):
-		NOTE(REG_ULOCALE);
-		RETV(CCLASS, 's');
-		break;
-	case CHR('S'):
-		NOTE(REG_ULOCALE);
-		RETV(CCLASS, 'S');
-		break;
-	case CHR('t'):
-		RETV(PLAIN, CHR('\t'));
-		break;
-	case CHR('u'):
-		c = lexdigits(v, 16, 4, 4);
-		if (ISERR())
-			FAILW(REG_EESCAPE);
-		RETV(PLAIN, c);
-		break;
-	case CHR('U'):
-		c = lexdigits(v, 16, 8, 8);
-		if (ISERR())
-			FAILW(REG_EESCAPE);
-		RETV(PLAIN, c);
-		break;
-	case CHR('v'):
-		RETV(PLAIN, CHR('\v'));
-		break;
-	case CHR('w'):
-		NOTE(REG_ULOCALE);
-		RETV(CCLASS, 'w');
-		break;
-	case CHR('W'):
-		NOTE(REG_ULOCALE);
-		RETV(CCLASS, 'W');
-		break;
-	case CHR('x'):
-		NOTE(REG_UUNPORT);
-		c = lexdigits(v, 16, 1, 255);	/* REs >255 long outside spec */
-		if (ISERR())
-			FAILW(REG_EESCAPE);
-		RETV(PLAIN, c);
-		break;
-	case CHR('y'):
-		NOTE(REG_ULOCALE);
-		RETV(WBDRY, 0);
-		break;
-	case CHR('Y'):
-		NOTE(REG_ULOCALE);
-		RETV(NWBDRY, 0);
-		break;
-	case CHR('Z'):
-		RETV(SEND, 0);
-		break;
-	case CHR('1'): case CHR('2'): case CHR('3'): case CHR('4'):
-	case CHR('5'): case CHR('6'): case CHR('7'): case CHR('8'):
-	case CHR('9'):
-		save = v->now;
-		v->now--;	/* put first digit back */
-		c = lexdigits(v, 10, 1, 255);	/* REs >255 long outside spec */
-		if (ISERR())
-			FAILW(REG_EESCAPE);
-		/* ugly heuristic (first test is "exactly 1 digit?") */
-		if (v->now-save == 0 || ((int)c > 0 && (int)c <= v->nsubexp)) {
-			NOTE(REG_UBACKREF);
-			RETV(BACKREF, (chr)c);
-		}
-		/* oops, doesn't look like it's a backref after all... */
-		v->now = save;
-		/* and fall through into octal number */
-	case CHR('0'):
-		NOTE(REG_UUNPORT);
-		v->now--;	/* put first digit back */
-		c = lexdigits(v, 8, 1, 3);
-		if (ISERR())
-			FAILW(REG_EESCAPE);
-		RETV(PLAIN, c);
-		break;
-	default:
-		assert(iscalpha(c));
-		FAILW(REG_EESCAPE);	/* unknown alphabetic escape */
-		break;
+    assert(v->cflags&REG_ADVF);
+
+    assert(!ATEOS());
+    c = *v->now++;
+    if (!iscalnum(c)) {
+	RETV(PLAIN, c);
+    }
+
+    NOTE(REG_UNONPOSIX);
+    switch (c) {
+    case CHR('a'):
+	RETV(PLAIN, chrnamed(v, alert, ENDOF(alert), CHR('\007')));
+	break;
+    case CHR('A'):
+	RETV(SBEGIN, 0);
+	break;
+    case CHR('b'):
+	RETV(PLAIN, CHR('\b'));
+	break;
+    case CHR('B'):
+	RETV(PLAIN, CHR('\\'));
+	break;
+    case CHR('c'):
+	NOTE(REG_UUNPORT);
+	if (ATEOS()) {
+	    FAILW(REG_EESCAPE);
 	}
-	assert(NOTREACHED);
-}
+	RETV(PLAIN, (chr)(*v->now++ & 037));
+	break;
+    case CHR('d'):
+	NOTE(REG_ULOCALE);
+	RETV(CCLASS, 'd');
+	break;
+    case CHR('D'):
+	NOTE(REG_ULOCALE);
+	RETV(CCLASS, 'D');
+	break;
+    case CHR('e'):
+	NOTE(REG_UUNPORT);
+	RETV(PLAIN, chrnamed(v, esc, ENDOF(esc), CHR('\033')));
+	break;
+    case CHR('f'):
+	RETV(PLAIN, CHR('\f'));
+	break;
+    case CHR('m'):
+	RET('<');
+	break;
+    case CHR('M'):
+	RET('>');
+	break;
+    case CHR('n'):
+	RETV(PLAIN, CHR('\n'));
+	break;
+    case CHR('r'):
+	RETV(PLAIN, CHR('\r'));
+	break;
+    case CHR('s'):
+	NOTE(REG_ULOCALE);
+	RETV(CCLASS, 's');
+	break;
+    case CHR('S'):
+	NOTE(REG_ULOCALE);
+	RETV(CCLASS, 'S');
+	break;
+    case CHR('t'):
+	RETV(PLAIN, CHR('\t'));
+	break;
+    case CHR('u'):
+	c = lexdigits(v, 16, 4, 4);
+	if (ISERR()) {
+	    FAILW(REG_EESCAPE);
+	}
+	RETV(PLAIN, c);
+	break;
+    case CHR('U'):
+	c = lexdigits(v, 16, 8, 8);
+	if (ISERR()) {
+	    FAILW(REG_EESCAPE);
+	}
+	RETV(PLAIN, c);
+	break;
+    case CHR('v'):
+	RETV(PLAIN, CHR('\v'));
+	break;
+    case CHR('w'):
+	NOTE(REG_ULOCALE);
+	RETV(CCLASS, 'w');
+	break;
+    case CHR('W'):
+	NOTE(REG_ULOCALE);
+	RETV(CCLASS, 'W');
+	break;
+    case CHR('x'):
+	NOTE(REG_UUNPORT);
+	c = lexdigits(v, 16, 1, 255);	/* REs >255 long outside spec */
+	if (ISERR()) {
+	    FAILW(REG_EESCAPE);
+	}
+	RETV(PLAIN, c);
+	break;
+    case CHR('y'):
+	NOTE(REG_ULOCALE);
+	RETV(WBDRY, 0);
+	break;
+    case CHR('Y'):
+	NOTE(REG_ULOCALE);
+	RETV(NWBDRY, 0);
+	break;
+    case CHR('Z'):
+	RETV(SEND, 0);
+	break;
+    case CHR('1'): case CHR('2'): case CHR('3'): case CHR('4'):
+    case CHR('5'): case CHR('6'): case CHR('7'): case CHR('8'):
+    case CHR('9'):
+	save = v->now;
+	v->now--;		/* put first digit back */
+	c = lexdigits(v, 10, 1, 255);	/* REs >255 long outside spec */
+	if (ISERR()) {
+	    FAILW(REG_EESCAPE);
+	}
+
+	/*
+	 * Ugly heuristic (first test is "exactly 1 digit?")
+	 */
+
+	if (v->now - save == 0 || ((int) c > 0 && (int)c <= v->nsubexp)) {
+	    NOTE(REG_UBACKREF);
+	    RETV(BACKREF, (chr)c);
+	}
+
+	/*
+	 * Oops, doesn't look like it's a backref after all...
+	 */
 
+	v->now = save;
+
+	/*
+	 * And fall through into octal number.
+	 */
+
+    case CHR('0'):
+	NOTE(REG_UUNPORT);
+	v->now--;		/* put first digit back */
+	c = lexdigits(v, 8, 1, 3);
+	if (ISERR()) {
+	    FAILW(REG_EESCAPE);
+	}
+	RETV(PLAIN, c);
+	break;
+    default:
+	assert(iscalpha(c));
+	FAILW(REG_EESCAPE);	/* unknown alphabetic escape */
+	break;
+    }
+    assert(NOTREACHED);
+}
+
 /*
  - lexdigits - slurp up digits and return chr value
  ^ static chr lexdigits(struct vars *, int, int, int);
  */
 static chr			/* chr value; errors signalled via ERR */
-lexdigits(v, base, minlen, maxlen)
-struct vars *v;
-int base;
-int minlen;
-int maxlen;
+lexdigits(
+    struct vars *v,
+    int base,
+    int minlen,
+    int maxlen)
 {
-	uchr n;			/* unsigned to avoid overflow misbehavior */
-	int len;
-	chr c;
-	int d;
-	CONST uchr ub = (uchr) base;
-
-	n = 0;
-	for (len = 0; len < maxlen && !ATEOS(); len++) {
-		c = *v->now++;
-		switch (c) {
-		case CHR('0'): case CHR('1'): case CHR('2'): case CHR('3'):
-		case CHR('4'): case CHR('5'): case CHR('6'): case CHR('7'):
-		case CHR('8'): case CHR('9'):
-			d = DIGITVAL(c);
-			break;
-		case CHR('a'): case CHR('A'): d = 10; break;
-		case CHR('b'): case CHR('B'): d = 11; break;
-		case CHR('c'): case CHR('C'): d = 12; break;
-		case CHR('d'): case CHR('D'): d = 13; break;
-		case CHR('e'): case CHR('E'): d = 14; break;
-		case CHR('f'): case CHR('F'): d = 15; break;
-		default:
-			v->now--;	/* oops, not a digit at all */
-			d = -1;
-			break;
-		}
+    uchr n;			/* unsigned to avoid overflow misbehavior */
+    int len;
+    chr c;
+    int d;
+    CONST uchr ub = (uchr) base;
 
-		if (d >= base) {	/* not a plausible digit */
-			v->now--;
-			d = -1;
-		}
-		if (d < 0)
-			break;		/* NOTE BREAK OUT */
-		n = n*ub + (uchr)d;
+    n = 0;
+    for (len = 0; len < maxlen && !ATEOS(); len++) {
+	c = *v->now++;
+	switch (c) {
+	case CHR('0'): case CHR('1'): case CHR('2'): case CHR('3'):
+	case CHR('4'): case CHR('5'): case CHR('6'): case CHR('7'):
+	case CHR('8'): case CHR('9'):
+	    d = DIGITVAL(c);
+	    break;
+	case CHR('a'): case CHR('A'): d = 10; break;
+	case CHR('b'): case CHR('B'): d = 11; break;
+	case CHR('c'): case CHR('C'): d = 12; break;
+	case CHR('d'): case CHR('D'): d = 13; break;
+	case CHR('e'): case CHR('E'): d = 14; break;
+	case CHR('f'): case CHR('F'): d = 15; break;
+	default:
+	    v->now--;		/* oops, not a digit at all */
+	    d = -1;
+	    break;
 	}
-	if (len < minlen)
-		ERR(REG_EESCAPE);
 
-	return (chr)n;
-}
+	if (d >= base) {	/* not a plausible digit */
+	    v->now--;
+	    d = -1;
+	}
+	if (d < 0) {
+	    break;		/* NOTE BREAK OUT */
+	}
+	n = n*ub + (uchr)d;
+    }
+    if (len < minlen) {
+	ERR(REG_EESCAPE);
+    }
 
+    return (chr)n;
+}
+
 /*
  - brenext - get next BRE token
  * This is much like EREs except for all the stupid backslashes and the
@@ -865,197 +968,218 @@ int maxlen;
  ^ static int brenext(struct vars *, pchr);
  */
 static int			/* 1 normal, 0 failure */
-brenext(v, pc)
-struct vars *v;
-pchr pc;
+brenext(
+    struct vars *v,
+    pchr pc)
 {
-	chr c = (chr)pc;
+    chr c = (chr)pc;
 
-	switch (c) {
-	case CHR('*'):
-		if (LASTTYPE(EMPTY) || LASTTYPE('(') || LASTTYPE('^'))
-			RETV(PLAIN, c);
-		RET('*');
-		break;
-	case CHR('['):
-		if (HAVE(6) &&	*(v->now+0) == CHR('[') &&
-				*(v->now+1) == CHR(':') &&
-				(*(v->now+2) == CHR('<') ||
-						*(v->now+2) == CHR('>')) &&
-				*(v->now+3) == CHR(':') &&
-				*(v->now+4) == CHR(']') &&
-				*(v->now+5) == CHR(']')) {
-			c = *(v->now+2);
-			v->now += 6;
-			NOTE(REG_UNONPOSIX);
-			RET((c == CHR('<')) ? '<' : '>');
-		}
-		INTOCON(L_BRACK);
-		if (NEXT1('^')) {
-			v->now++;
-			RETV('[', 0);
-		}
-		RETV('[', 1);
-		break;
-	case CHR('.'):
-		RET('.');
-		break;
-	case CHR('^'):
-		if (LASTTYPE(EMPTY))
-			RET('^');
-		if (LASTTYPE('(')) {
-			NOTE(REG_UUNSPEC);
-			RET('^');
-		}
-		RETV(PLAIN, c);
-		break;
-	case CHR('$'):
-		if (v->cflags&REG_EXPANDED)
-			skip(v);
-		if (ATEOS())
-			RET('$');
-		if (NEXT2('\\', ')')) {
-			NOTE(REG_UUNSPEC);
-			RET('$');
-		}
-		RETV(PLAIN, c);
-		break;
-	case CHR('\\'):
-		break;		/* see below */
-	default:
-		RETV(PLAIN, c);
-		break;
+    switch (c) {
+    case CHR('*'):
+	if (LASTTYPE(EMPTY) || LASTTYPE('(') || LASTTYPE('^')) {
+	    RETV(PLAIN, c);
+	}
+	RET('*');
+	break;
+    case CHR('['):
+	if (HAVE(6) &&	*(v->now+0) == CHR('[') &&
+		*(v->now+1) == CHR(':') &&
+		(*(v->now+2) == CHR('<') || *(v->now+2) == CHR('>')) &&
+		*(v->now+3) == CHR(':') &&
+		*(v->now+4) == CHR(']') &&
+		*(v->now+5) == CHR(']')) {
+	    c = *(v->now+2);
+	    v->now += 6;
+	    NOTE(REG_UNONPOSIX);
+	    RET((c == CHR('<')) ? '<' : '>');
+	}
+	INTOCON(L_BRACK);
+	if (NEXT1('^')) {
+	    v->now++;
+	    RETV('[', 0);
+	}
+	RETV('[', 1);
+	break;
+    case CHR('.'):
+	RET('.');
+	break;
+    case CHR('^'):
+	if (LASTTYPE(EMPTY)) {
+	    RET('^');
+	}
+	if (LASTTYPE('(')) {
+	    NOTE(REG_UUNSPEC);
+	    RET('^');
 	}
+	RETV(PLAIN, c);
+	break;
+    case CHR('$'):
+	if (v->cflags&REG_EXPANDED) {
+	    skip(v);
+	}
+	if (ATEOS()) {
+	    RET('$');
+	}
+	if (NEXT2('\\', ')')) {
+	    NOTE(REG_UUNSPEC);
+	    RET('$');
+	}
+	RETV(PLAIN, c);
+	break;
+    case CHR('\\'):
+	break;			/* see below */
+    default:
+	RETV(PLAIN, c);
+	break;
+    }
 
-	assert(c == CHR('\\'));
+    assert(c == CHR('\\'));
 
-	if (ATEOS())
-		FAILW(REG_EESCAPE);
+    if (ATEOS()) {
+	FAILW(REG_EESCAPE);
+    }
 
-	c = *v->now++;
-	switch (c) {
-	case CHR('{'):
-		INTOCON(L_BBND);
-		NOTE(REG_UBOUNDS);
-		RET('{');
-		break;
-	case CHR('('):
-		RETV('(', 1);
-		break;
-	case CHR(')'):
-		RETV(')', c);
-		break;
-	case CHR('<'):
-		NOTE(REG_UNONPOSIX);
-		RET('<');
-		break;
-	case CHR('>'):
-		NOTE(REG_UNONPOSIX);
-		RET('>');
-		break;
-	case CHR('1'): case CHR('2'): case CHR('3'): case CHR('4'):
-	case CHR('5'): case CHR('6'): case CHR('7'): case CHR('8'):
-	case CHR('9'):
-		NOTE(REG_UBACKREF);
-		RETV(BACKREF, (chr)DIGITVAL(c));
-		break;
-	default:
-		if (iscalnum(c)) {
-			NOTE(REG_UBSALNUM);
-			NOTE(REG_UUNSPEC);
-		}
-		RETV(PLAIN, c);
-		break;
+    c = *v->now++;
+    switch (c) {
+    case CHR('{'):
+	INTOCON(L_BBND);
+	NOTE(REG_UBOUNDS);
+	RET('{');
+	break;
+    case CHR('('):
+	RETV('(', 1);
+	break;
+    case CHR(')'):
+	RETV(')', c);
+	break;
+    case CHR('<'):
+	NOTE(REG_UNONPOSIX);
+	RET('<');
+	break;
+    case CHR('>'):
+	NOTE(REG_UNONPOSIX);
+	RET('>');
+	break;
+    case CHR('1'): case CHR('2'): case CHR('3'): case CHR('4'):
+    case CHR('5'): case CHR('6'): case CHR('7'): case CHR('8'):
+    case CHR('9'):
+	NOTE(REG_UBACKREF);
+	RETV(BACKREF, (chr)DIGITVAL(c));
+	break;
+    default:
+	if (iscalnum(c)) {
+	    NOTE(REG_UBSALNUM);
+	    NOTE(REG_UUNSPEC);
 	}
+	RETV(PLAIN, c);
+	break;
+    }
 
-	assert(NOTREACHED);
+    assert(NOTREACHED);
 }
-
+
 /*
  - skip - skip white space and comments in expanded form
  ^ static VOID skip(struct vars *);
  */
-static VOID
-skip(v)
-struct vars *v;
+static void
+skip(
+    struct vars *v)
 {
-	CONST chr *start = v->now;
-
-	assert(v->cflags&REG_EXPANDED);
-
-	for (;;) {
-		while (!ATEOS() && iscspace(*v->now))
-			v->now++;
-		if (ATEOS() || *v->now != CHR('#'))
-			break;				/* NOTE BREAK OUT */
-		assert(NEXT1('#'));
-		while (!ATEOS() && *v->now != CHR('\n'))
-			v->now++;
-		/* leave the newline to be picked up by the iscspace loop */
+    const chr *start = v->now;
+
+    assert(v->cflags&REG_EXPANDED);
+
+    for (;;) {
+	while (!ATEOS() && iscspace(*v->now)) {
+	    v->now++;
+	}
+	if (ATEOS() || *v->now != CHR('#')) {
+	    break;		/* NOTE BREAK OUT */
+	}
+	assert(NEXT1('#'));
+	while (!ATEOS() && *v->now != CHR('\n')) {
+	    v->now++;
 	}
 
-	if (v->now != start)
-		NOTE(REG_UNONPOSIX);
-}
+	/*
+	 * Leave the newline to be picked up by the iscspace loop.
+	 */
+    }
 
+    if (v->now != start) {
+	NOTE(REG_UNONPOSIX);
+    }
+}
+
 /*
  - newline - return the chr for a newline
  * This helps confine use of CHR to this source file.
  ^ static chr newline(NOPARMS);
  */
 static chr
-newline()
+newline(void)
 {
-	return CHR('\n');
+    return CHR('\n');
 }
-
+
 /*
  - ch - return the chr sequence for regc_locale.c's fake collating element ch
  * This helps confine use of CHR to this source file.  Beware that the caller
  * knows how long the sequence is.
  ^ #ifdef REG_DEBUG
- ^ static chr *ch(NOPARMS);
+ ^ static const chr *ch(NOPARMS);
  ^ #endif
  */
 #ifdef REG_DEBUG
-static CONST chr *
-ch()
+static const chr *
+ch(void)
 {
-	static CONST chr chstr[] = { CHR('c'), CHR('h'), CHR('\0') };
+    static const chr chstr[] = { CHR('c'), CHR('h'), CHR('\0') };
 
-	return chstr;
+    return chstr;
 }
 #endif
-
+
 /*
  - chrnamed - return the chr known by a given (chr string) name
  * The code is a bit clumsy, but this routine gets only such specialized
  * use that it hardly matters.
- ^ static chr chrnamed(struct vars *, chr *, chr *, pchr);
+ ^ static chr chrnamed(struct vars *, const chr *, const chr *, pchr);
  */
 static chr
-chrnamed(v, startp, endp, lastresort)
-struct vars *v;
-CONST chr *startp;			/* start of name */
-CONST chr *endp;			/* just past end of name */
-pchr lastresort;		/* what to return if name lookup fails */
+chrnamed(
+    struct vars *v,
+    const chr *startp,		/* start of name */
+    const chr *endp,		/* just past end of name */
+    pchr lastresort)		/* what to return if name lookup fails */
 {
-	celt c;
-	int errsave;
-	int e;
-	struct cvec *cv;
-
-	errsave = v->err;
-	v->err = 0;
-	c = element(v, startp, endp);
-	e = v->err;
-	v->err = errsave;
-
-	if (e != 0)
-		return (chr)lastresort;
-
-	cv = range(v, c, c, 0);
-	if (cv->nchrs == 0)
-		return (chr)lastresort;
-	return cv->chrs[0];
+    celt c;
+    int errsave;
+    int e;
+    struct cvec *cv;
+
+    errsave = v->err;
+    v->err = 0;
+    c = element(v, startp, endp);
+    e = v->err;
+    v->err = errsave;
+
+    if (e != 0) {
+	return (chr)lastresort;
+    }
+
+    cv = range(v, c, c, 0);
+    if (cv->nchrs == 0) {
+	return (chr)lastresort;
+    }
+    return cv->chrs[0];
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regc_locale.c b/generic/regc_locale.c
index 6fd831d..40791f4 100644
--- a/generic/regc_locale.c
+++ b/generic/regc_locale.c
@@ -12,9 +12,9 @@
 
 /* ASCII character-name table */
 
-static CONST struct cname {
-    CONST char *name;
-    CONST char code;
+static const struct cname {
+    const char *name;
+    const char code;
 } cnames[] = {
     {"NUL",		'\0'},
     {"SOH",		'\001'},
@@ -133,7 +133,7 @@ typedef struct crange {
  * Unicode: alphabetic characters.
  */
 
-static CONST crange alphaRangeTable[] = {
+static const crange alphaRangeTable[] = {
     {0x41, 0x5a}, {0x61, 0x7a}, {0xc0, 0xd6}, {0xd8, 0xf6},
     {0xf8, 0x2c1}, {0x2c6, 0x2d1}, {0x2e0, 0x2e4}, {0x370, 0x374},
     {0x37a, 0x37d}, {0x388, 0x38a}, {0x38e, 0x3a1}, {0x3a3, 0x3f5},
@@ -224,7 +224,7 @@ static CONST crange alphaRangeTable[] = {
 
 #define NUM_ALPHA_RANGE (sizeof(alphaRangeTable)/sizeof(crange))
 
-static CONST chr alphaCharTable[] = {
+static const chr alphaCharTable[] = {
     0xaa, 0xb5, 0xba, 0x2ec, 0x2ee, 0x376, 0x377, 0x386, 0x38c,
     0x559, 0x66e, 0x66f, 0x6d5, 0x6e5, 0x6e6, 0x6ee, 0x6ef, 0x6ff,
     0x710, 0x7b1, 0x7f4, 0x7f5, 0x7fa, 0x81a, 0x824, 0x828, 0x8a0,
@@ -258,7 +258,7 @@ static CONST chr alphaCharTable[] = {
  * Unicode: control characters.
  */
 
-static CONST crange controlRangeTable[] = {
+static const crange controlRangeTable[] = {
     {0x7f, 0x9f}, {0x600, 0x604}, {0x200b, 0x200f}, {0x202a, 0x202e},
     {0x2060, 0x2064}, {0x206a, 0x206f}, {0xe000, 0xf8ff}, {0xfff9, 0xfffb}
 #if TCL_UTF_MAX > 4
@@ -268,7 +268,7 @@ static CONST crange controlRangeTable[] = {
 
 #define NUM_CONTROL_RANGE (sizeof(controlRangeTable)/sizeof(crange))
 
-static CONST chr controlCharTable[] = {
+static const chr controlCharTable[] = {
     0xad, 0x6dd, 0x70f, 0xfeff
 #if TCL_UTF_MAX > 4
     ,0x110bd, 0xe0001
@@ -281,7 +281,7 @@ static CONST chr controlCharTable[] = {
  * Unicode: decimal digit characters.
  */
 
-static CONST crange digitRangeTable[] = {
+static const crange digitRangeTable[] = {
     {0x30, 0x39}, {0x660, 0x669}, {0x6f0, 0x6f9}, {0x7c0, 0x7c9},
     {0x966, 0x96f}, {0x9e6, 0x9ef}, {0xa66, 0xa6f}, {0xae6, 0xaef},
     {0xb66, 0xb6f}, {0xbe6, 0xbef}, {0xc66, 0xc6f}, {0xce6, 0xcef},
@@ -307,7 +307,7 @@ static CONST crange digitRangeTable[] = {
  * Unicode: punctuation characters.
  */
 
-static CONST crange punctRangeTable[] = {
+static const crange punctRangeTable[] = {
     {0x21, 0x23}, {0x25, 0x2a}, {0x2c, 0x2f}, {0x5b, 0x5d},
     {0x55a, 0x55f}, {0x66a, 0x66d}, {0x700, 0x70d}, {0x7f7, 0x7f9},
     {0x830, 0x83e}, {0xf04, 0xf12}, {0xf3a, 0xf3d}, {0xfd0, 0xfd4},
@@ -329,7 +329,7 @@ static CONST crange punctRangeTable[] = {
 
 #define NUM_PUNCT_RANGE (sizeof(punctRangeTable)/sizeof(crange))
 
-static CONST chr punctCharTable[] = {
+static const chr punctCharTable[] = {
     0x3a, 0x3b, 0x3f, 0x40, 0x5f, 0x7b, 0x7d, 0xa1, 0xa7,
     0xab, 0xb6, 0xb7, 0xbb, 0xbf, 0x37e, 0x387, 0x589, 0x58a,
     0x5be, 0x5c0, 0x5c3, 0x5c6, 0x5f3, 0x5f4, 0x609, 0x60a, 0x60c,
@@ -353,13 +353,13 @@ static CONST chr punctCharTable[] = {
  * Unicode: white space characters.
  */
 
-static CONST crange spaceRangeTable[] = {
+static const crange spaceRangeTable[] = {
     {0x9, 0xd}, {0x2000, 0x200a}
 };
 
 #define NUM_SPACE_RANGE (sizeof(spaceRangeTable)/sizeof(crange))
 
-static CONST chr spaceCharTable[] = {
+static const chr spaceCharTable[] = {
     0x20, 0xa0, 0x1680, 0x180e, 0x2028, 0x2029, 0x202f, 0x205f, 0x3000
 };
 
@@ -369,7 +369,7 @@ static CONST chr spaceCharTable[] = {
  * Unicode: lowercase characters.
  */
 
-static CONST crange lowerRangeTable[] = {
+static const crange lowerRangeTable[] = {
     {0x61, 0x7a}, {0xdf, 0xf6}, {0xf8, 0xff}, {0x17e, 0x180},
     {0x199, 0x19b}, {0x1bd, 0x1bf}, {0x233, 0x239}, {0x24f, 0x293},
     {0x295, 0x2af}, {0x37b, 0x37d}, {0x3ac, 0x3ce}, {0x3d5, 0x3d7},
@@ -394,7 +394,7 @@ static CONST crange lowerRangeTable[] = {
 
 #define NUM_LOWER_RANGE (sizeof(lowerRangeTable)/sizeof(crange))
 
-static CONST chr lowerCharTable[] = {
+static const chr lowerCharTable[] = {
     0xb5, 0x101, 0x103, 0x105, 0x107, 0x109, 0x10b, 0x10d, 0x10f,
     0x111, 0x113, 0x115, 0x117, 0x119, 0x11b, 0x11d, 0x11f, 0x121,
     0x123, 0x125, 0x127, 0x129, 0x12b, 0x12d, 0x12f, 0x131, 0x133,
@@ -468,7 +468,7 @@ static CONST chr lowerCharTable[] = {
  * Unicode: uppercase characters.
  */
 
-static CONST crange upperRangeTable[] = {
+static const crange upperRangeTable[] = {
     {0x41, 0x5a}, {0xc0, 0xd6}, {0xd8, 0xde}, {0x189, 0x18b},
     {0x18e, 0x191}, {0x196, 0x198}, {0x1b1, 0x1b3}, {0x1f6, 0x1f8},
     {0x243, 0x246}, {0x388, 0x38a}, {0x391, 0x3a1}, {0x3a3, 0x3ab},
@@ -491,7 +491,7 @@ static CONST crange upperRangeTable[] = {
 
 #define NUM_UPPER_RANGE (sizeof(upperRangeTable)/sizeof(crange))
 
-static CONST chr upperCharTable[] = {
+static const chr upperCharTable[] = {
     0x100, 0x102, 0x104, 0x106, 0x108, 0x10a, 0x10c, 0x10e, 0x110,
     0x112, 0x114, 0x116, 0x118, 0x11a, 0x11c, 0x11e, 0x120, 0x122,
     0x124, 0x126, 0x128, 0x12a, 0x12c, 0x12e, 0x130, 0x132, 0x134,
@@ -566,7 +566,7 @@ static CONST chr upperCharTable[] = {
  * Unicode: unicode print characters excluding space.
  */
 
-static CONST crange graphRangeTable[] = {
+static const crange graphRangeTable[] = {
     {0x21, 0x7e}, {0xa1, 0xac}, {0xae, 0x377}, {0x37a, 0x37e},
     {0x384, 0x38a}, {0x38e, 0x3a1}, {0x3a3, 0x527}, {0x531, 0x556},
     {0x559, 0x55f}, {0x561, 0x587}, {0x591, 0x5c7}, {0x5d0, 0x5ea},
@@ -682,7 +682,7 @@ static CONST crange graphRangeTable[] = {
 
 #define NUM_GRAPH_RANGE (sizeof(graphRangeTable)/sizeof(crange))
 
-static CONST chr graphCharTable[] = {
+static const chr graphCharTable[] = {
     0x38c, 0x589, 0x58a, 0x58f, 0x85e, 0x8a0, 0x98f, 0x990, 0x9b2,
     0x9c7, 0x9c8, 0x9d7, 0x9dc, 0x9dd, 0xa0f, 0xa10, 0xa32, 0xa33,
     0xa35, 0xa36, 0xa38, 0xa39, 0xa3c, 0xa47, 0xa48, 0xa51, 0xa5e,
@@ -715,18 +715,18 @@ static CONST chr graphCharTable[] = {
 
 /*
  - element - map collating-element name to celt
- ^ static celt element(struct vars *, CONST chr *, CONST chr *);
+ ^ static celt element(struct vars *, const chr *, const chr *);
  */
 static celt
-element(v, startp, endp)
-    struct vars *v;			/* context */
-    CONST chr *startp;			/* points to start of name */
-    CONST chr *endp;				/* points just past end of name */
+element(
+    struct vars *v,		/* context */
+    const chr *startp,		/* points to start of name */
+    const chr *endp)		/* points just past end of name */
 {
-    CONST struct cname *cn;
+    const struct cname *cn;
     size_t len;
     Tcl_DString ds;
-    CONST char *np;
+    const char *np;
 
     /*
      * Generic: one-chr names stand for themselves.
@@ -769,11 +769,11 @@ element(v, startp, endp)
  ^ static struct cvec *range(struct vars *, celt, celt, int);
  */
 static struct cvec *
-range(v, a, b, cases)
-    struct vars *v;			/* context */
-    celt a;				/* range start */
-    celt b;				/* range end, might equal a */
-    int cases;				/* case-independent? */
+range(
+    struct vars *v,		/* context */
+    celt a,			/* range start */
+    celt b,			/* range end, might equal a */
+    int cases)			/* case-independent? */
 {
     int nchrs;
     struct cvec *cv;
@@ -826,8 +826,8 @@ range(v, a, b, cases)
  ^ static int before(celt, celt);
  */
 static int			/* predicate */
-before(x, y)
-    celt x, y;				/* collating elements */
+before(
+    celt x, celt y)		/* collating elements */
 {
     if (x < y) {
 	return 1;
@@ -841,11 +841,11 @@ before(x, y)
  ^ static struct cvec *eclass(struct vars *, celt, int);
  */
 static struct cvec *
-eclass(v, c, cases)
-    struct vars *v;			/* context */
-    celt c;				/* Collating element representing
-					 * the equivalence class. */
-    int cases;				/* all cases? */
+eclass(
+    struct vars *v,		/* context */
+    celt c,			/* Collating element representing the
+				 * equivalence class. */
+    int cases)			/* all cases? */
 {
     struct cvec *cv;
 
@@ -880,27 +880,27 @@ eclass(v, c, cases)
 /*
  - cclass - supply cvec for a character class
  * Must include case counterparts on request.
- ^ static struct cvec *cclass(struct vars *, CONST chr *, CONST chr *, int);
+ ^ static struct cvec *cclass(struct vars *, const chr *, const chr *, int);
  */
 static struct cvec *
-cclass(v, startp, endp, cases)
-    struct vars *v;			/* context */
-    CONST chr *startp;		/* where the name starts */
-    CONST chr *endp;		/* just past the end of the name */
-    int cases;				/* case-independent? */
+cclass(
+    struct vars *v,		/* context */
+    const chr *startp,		/* where the name starts */
+    const chr *endp,		/* just past the end of the name */
+    int cases)			/* case-independent? */
 {
     size_t len;
     struct cvec *cv = NULL;
     Tcl_DString ds;
-    CONST char *np;
-    CONST char *CONST *namePtr;
+    const char *np;
+    const char *const *namePtr;
     int i, index;
 
     /*
      * The following arrays define the valid character class names.
      */
 
-    static CONST char *CONST classNames[] = {
+    static const char *const classNames[] = {
 	"alnum", "alpha", "ascii", "blank", "cntrl", "digit", "graph",
 	"lower", "print", "punct", "space", "upper", "xdigit", NULL
     };
@@ -1119,9 +1119,9 @@ cclass(v, startp, endp, cases)
  ^ static struct cvec *allcases(struct vars *, pchr);
  */
 static struct cvec *
-allcases(v, pc)
-    struct vars *v;			/* context */
-    pchr pc;				/* character to get case equivs of */
+allcases(
+    struct vars *v,		/* context */
+    pchr pc)			/* character to get case equivs of */
 {
     struct cvec *cv;
     chr c = (chr)pc;
@@ -1150,12 +1150,12 @@ allcases(v, pc)
  * Note that it does not need to report anything except equal/unequal.
  * Note also that the length is exact, and the comparison should not
  * stop at embedded NULs!
- ^ static int cmp(CONST chr *, CONST chr *, size_t);
+ ^ static int cmp(const chr *, const chr *, size_t);
  */
-static int				/* 0 for equal, nonzero for unequal */
-cmp(x, y, len)
-    CONST chr *x, *y;			/* strings to compare */
-    size_t len;				/* exact length of comparison */
+static int			/* 0 for equal, nonzero for unequal */
+cmp(
+    const chr *x, const chr *y,	/* strings to compare */
+    size_t len)			/* exact length of comparison */
 {
     return memcmp(VS(x), VS(y), len*sizeof(chr));
 }
@@ -1166,12 +1166,12 @@ cmp(x, y, len)
  * Note that it does not need to report anything except equal/unequal.
  * Note also that the length is exact, and the comparison should not
  * stop at embedded NULs!
- ^ static int casecmp(CONST chr *, CONST chr *, size_t);
+ ^ static int casecmp(const chr *, const chr *, size_t);
  */
-static int				/* 0 for equal, nonzero for unequal */
-casecmp(x, y, len)
-    CONST chr *x, *y;			/* strings to compare */
-    size_t len;				/* exact length of comparison */
+static int			/* 0 for equal, nonzero for unequal */
+casecmp(
+    const chr *x, const chr *y,	/* strings to compare */
+    size_t len)			/* exact length of comparison */
 {
     for (; len > 0; len--, x++, y++) {
 	if ((*x!=*y) && (Tcl_UniCharToLower(*x) != Tcl_UniCharToLower(*y))) {
diff --git a/generic/regc_nfa.c b/generic/regc_nfa.c
index 459968a..65ca7a7 100644
--- a/generic/regc_nfa.c
+++ b/generic/regc_nfa.c
@@ -2,24 +2,24 @@
  * NFA utilities.
  * This file is #included by regcomp.c.
  *
- * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * Corporation, none of whom are responsible for the results. The author
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
@@ -28,471 +28,510 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *
- *
- * One or two things that technically ought to be in here
- * are actually in color.c, thanks to some incestuous relationships in
- * the color chains.
+ * One or two things that technically ought to be in here are actually in
+ * color.c, thanks to some incestuous relationships in the color chains.
  */
 
 #define	NISERR()	VISERR(nfa->v)
 #define	NERR(e)		VERR(nfa->v, (e))
-
-
+
 /*
  - newnfa - set up an NFA
  ^ static struct nfa *newnfa(struct vars *, struct colormap *, struct nfa *);
  */
 static struct nfa *		/* the NFA, or NULL */
-newnfa(v, cm, parent)
-struct vars *v;
-struct colormap *cm;
-struct nfa *parent;		/* NULL if primary NFA */
+newnfa(
+    struct vars *v,
+    struct colormap *cm,
+    struct nfa *parent)		/* NULL if primary NFA */
 {
-	struct nfa *nfa;
-
-	nfa = (struct nfa *)MALLOC(sizeof(struct nfa));
-	if (nfa == NULL)
-		return NULL;
-
-	nfa->states = NULL;
-	nfa->slast = NULL;
-	nfa->free = NULL;
-	nfa->nstates = 0;
-	nfa->cm = cm;
-	nfa->v = v;
-	nfa->size = 0;
-	nfa->bos[0] = nfa->bos[1] = COLORLESS;
-	nfa->eos[0] = nfa->eos[1] = COLORLESS;
-	nfa->parent = parent;
-	nfa->post = newfstate(nfa, '@');	/* number 0 */
-	nfa->pre = newfstate(nfa, '>');		/* number 1 */
-
-	nfa->init = newstate(nfa);		/* may become invalid later */
-	nfa->final = newstate(nfa);
-	if (ISERR()) {
-		freenfa(nfa);
-		return NULL;
-	}
-	rainbow(nfa, nfa->cm, PLAIN, COLORLESS, nfa->pre, nfa->init);
-	newarc(nfa, '^', 1, nfa->pre, nfa->init);
-	newarc(nfa, '^', 0, nfa->pre, nfa->init);
-	rainbow(nfa, nfa->cm, PLAIN, COLORLESS, nfa->final, nfa->post);
-	newarc(nfa, '$', 1, nfa->final, nfa->post);
-	newarc(nfa, '$', 0, nfa->final, nfa->post);
-
-	if (ISERR()) {
-		freenfa(nfa);
-		return NULL;
-	}
-	return nfa;
-}
+    struct nfa *nfa;
 
+    nfa = (struct nfa *) MALLOC(sizeof(struct nfa));
+    if (nfa == NULL) {
+	return NULL;
+    }
+
+    nfa->states = NULL;
+    nfa->slast = NULL;
+    nfa->free = NULL;
+    nfa->nstates = 0;
+    nfa->cm = cm;
+    nfa->v = v;
+    nfa->size = 0;
+    nfa->bos[0] = nfa->bos[1] = COLORLESS;
+    nfa->eos[0] = nfa->eos[1] = COLORLESS;
+    nfa->parent = parent;	/* Precedes newfstate so parent is valid. */
+    nfa->post = newfstate(nfa, '@');	/* number 0 */
+    nfa->pre = newfstate(nfa, '>');	/* number 1 */
+
+    nfa->init = newstate(nfa);	/* May become invalid later. */
+    nfa->final = newstate(nfa);
+    if (ISERR()) {
+	freenfa(nfa);
+	return NULL;
+    }
+    rainbow(nfa, nfa->cm, PLAIN, COLORLESS, nfa->pre, nfa->init);
+    newarc(nfa, '^', 1, nfa->pre, nfa->init);
+    newarc(nfa, '^', 0, nfa->pre, nfa->init);
+    rainbow(nfa, nfa->cm, PLAIN, COLORLESS, nfa->final, nfa->post);
+    newarc(nfa, '$', 1, nfa->final, nfa->post);
+    newarc(nfa, '$', 0, nfa->final, nfa->post);
+
+    if (ISERR()) {
+	freenfa(nfa);
+	return NULL;
+    }
+    return nfa;
+}
+
 /*
- - too_many_states - checks if the max states exceeds the compile-time value
- ^ static int too_many_states(struct nfa *);
+ - TooManyStates - checks if the max states exceeds the compile-time value
+ ^ static int TooManyStates(struct nfa *);
  */
 static int
-too_many_states(nfa)
-struct nfa *nfa;
+TooManyStates(
+    struct nfa *nfa)
 {
-	struct nfa *parent = nfa->parent;
-	size_t sz = nfa->size;
-	while (parent != NULL) {
-		sz = parent->size;
-		parent = parent->parent;
-	}
-	if (sz > REG_MAX_STATES)
-		return 1;
-	return 0;
+    struct nfa *parent = nfa->parent;
+    size_t sz = nfa->size;
+
+    while (parent != NULL) {
+	sz = parent->size;
+	parent = parent->parent;
+    }
+    if (sz > REG_MAX_STATES) {
+	return 1;
+    }
+    return 0;
 }
-
+
 /*
- - increment_size - increases the tracked size of the NFA and its parents.
- ^ static void increment_size(struct nfa *);
+ - IncrementSize - increases the tracked size of the NFA and its parents.
+ ^ static void IncrementSize(struct nfa *);
  */
 static void
-increment_size(nfa)
-struct nfa *nfa;
+IncrementSize(
+    struct nfa *nfa)
 {
-	struct nfa *parent = nfa->parent;
-	nfa->size++;
-	while (parent != NULL) {
-		parent->size++;
-		parent = parent->parent;
-	}
-}
+    struct nfa *parent = nfa->parent;
 
+    nfa->size++;
+    while (parent != NULL) {
+	parent->size++;
+	parent = parent->parent;
+    }
+}
+
 /*
- - decrement_size - increases the tracked size of the NFA and its parents.
- ^ static void decrement_size(struct nfa *);
+ - DecrementSize - increases the tracked size of the NFA and its parents.
+ ^ static void DecrementSize(struct nfa *);
  */
 static void
-decrement_size(nfa)
-struct nfa *nfa;
+DecrementSize(
+    struct nfa *nfa)
 {
-	struct nfa *parent = nfa->parent;
-	nfa->size--;
-	while (parent != NULL) {
-		parent->size--;
-		parent = parent->parent;
-	}
-}
+    struct nfa *parent = nfa->parent;
 
+    nfa->size--;
+    while (parent != NULL) {
+	parent->size--;
+	parent = parent->parent;
+    }
+}
+
 /*
  - freenfa - free an entire NFA
  ^ static VOID freenfa(struct nfa *);
  */
-static VOID
-freenfa(nfa)
-struct nfa *nfa;
+static void
+freenfa(
+    struct nfa *nfa)
 {
-	struct state *s;
-
-	while ((s = nfa->states) != NULL) {
-		s->nins = s->nouts = 0;		/* don't worry about arcs */
-		freestate(nfa, s);
-	}
-	while ((s = nfa->free) != NULL) {
-		nfa->free = s->next;
-		destroystate(nfa, s);
-	}
+    struct state *s;
 
-	nfa->slast = NULL;
-	nfa->nstates = -1;
-	nfa->pre = NULL;
-	nfa->post = NULL;
-	FREE(nfa);
+    while ((s = nfa->states) != NULL) {
+	s->nins = s->nouts = 0;	/* don't worry about arcs */
+	freestate(nfa, s);
+    }
+    while ((s = nfa->free) != NULL) {
+	nfa->free = s->next;
+	destroystate(nfa, s);
+    }
+
+    nfa->slast = NULL;
+    nfa->nstates = -1;
+    nfa->pre = NULL;
+    nfa->post = NULL;
+    FREE(nfa);
 }
-
+
 /*
  - newstate - allocate an NFA state, with zero flag value
  ^ static struct state *newstate(struct nfa *);
  */
 static struct state *		/* NULL on error */
-newstate(nfa)
-struct nfa *nfa;
+newstate(
+    struct nfa *nfa)
 {
-	struct state *s;
+    struct state *s;
 
-	if (too_many_states(nfa)) {
-		/* XXX: add specific error for this */
-		NERR(REG_ETOOBIG);
-		return NULL;
-	}
-	if (nfa->free != NULL) {
-		s = nfa->free;
-		nfa->free = s->next;
-	} else {
-		s = (struct state *)MALLOC(sizeof(struct state));
-		if (s == NULL) {
-			NERR(REG_ESPACE);
-			return NULL;
-		}
-		s->oas.next = NULL;
-		s->free = NULL;
-		s->noas = 0;
-	}
-
-	assert(nfa->nstates >= 0);
-	s->no = nfa->nstates++;
-	s->flag = 0;
-	if (nfa->states == NULL)
-		nfa->states = s;
-	s->nins = 0;
-	s->ins = NULL;
-	s->nouts = 0;
-	s->outs = NULL;
-	s->tmp = NULL;
-	s->next = NULL;
-	if (nfa->slast != NULL) {
-		assert(nfa->slast->next == NULL);
-		nfa->slast->next = s;
+    if (TooManyStates(nfa)) {
+	/* XXX: add specific error for this */
+	NERR(REG_ETOOBIG);
+	return NULL;
+    }
+    if (nfa->free != NULL) {
+	s = nfa->free;
+	nfa->free = s->next;
+    } else {
+	s = (struct state *) MALLOC(sizeof(struct state));
+	if (s == NULL) {
+	    NERR(REG_ESPACE);
+	    return NULL;
 	}
-	s->prev = nfa->slast;
-	nfa->slast = s;
-	/* Track the current size and the parent size */
-	increment_size(nfa);
-	return s;
+	s->oas.next = NULL;
+	s->free = NULL;
+	s->noas = 0;
+    }
+
+    assert(nfa->nstates >= 0);
+    s->no = nfa->nstates++;
+    s->flag = 0;
+    if (nfa->states == NULL) {
+	nfa->states = s;
+    }
+    s->nins = 0;
+    s->ins = NULL;
+    s->nouts = 0;
+    s->outs = NULL;
+    s->tmp = NULL;
+    s->next = NULL;
+    if (nfa->slast != NULL) {
+	assert(nfa->slast->next == NULL);
+	nfa->slast->next = s;
+    }
+    s->prev = nfa->slast;
+    nfa->slast = s;
+
+    /*
+     * Track the current size and the parent size.
+     */
+
+    IncrementSize(nfa);
+    return s;
 }
-
+
 /*
  - newfstate - allocate an NFA state with a specified flag value
  ^ static struct state *newfstate(struct nfa *, int flag);
  */
 static struct state *		/* NULL on error */
-newfstate(nfa, flag)
-struct nfa *nfa;
-int flag;
+newfstate(
+    struct nfa *nfa,
+    int flag)
 {
-	struct state *s;
+    struct state *s;
 
-	s = newstate(nfa);
-	if (s != NULL)
-		s->flag = (char)flag;
-	return s;
+    s = newstate(nfa);
+    if (s != NULL) {
+	s->flag = (char) flag;
+    }
+    return s;
 }
-
+
 /*
  - dropstate - delete a state's inarcs and outarcs and free it
  ^ static VOID dropstate(struct nfa *, struct state *);
  */
-static VOID
-dropstate(nfa, s)
-struct nfa *nfa;
-struct state *s;
+static void
+dropstate(
+    struct nfa *nfa,
+    struct state *s)
 {
-	struct arc *a;
-
-	while ((a = s->ins) != NULL)
-		freearc(nfa, a);
-	while ((a = s->outs) != NULL)
-		freearc(nfa, a);
-	freestate(nfa, s);
+    struct arc *a;
+
+    while ((a = s->ins) != NULL) {
+	freearc(nfa, a);
+    }
+    while ((a = s->outs) != NULL) {
+	freearc(nfa, a);
+    }
+    freestate(nfa, s);
 }
-
+
 /*
  - freestate - free a state, which has no in-arcs or out-arcs
  ^ static VOID freestate(struct nfa *, struct state *);
  */
-static VOID
-freestate(nfa, s)
-struct nfa *nfa;
-struct state *s;
+static void
+freestate(
+    struct nfa *nfa,
+    struct state *s)
 {
-	assert(s != NULL);
-	assert(s->nins == 0 && s->nouts == 0);
-
-	s->no = FREESTATE;
-	s->flag = 0;
-	if (s->next != NULL)
-		s->next->prev = s->prev;
-	else {
-		assert(s == nfa->slast);
-		nfa->slast = s->prev;
-	}
-	if (s->prev != NULL)
-		s->prev->next = s->next;
-	else {
-		assert(s == nfa->states);
-		nfa->states = s->next;
-	}
-	s->prev = NULL;
-	s->next = nfa->free;	/* don't delete it, put it on the free list */
-	nfa->free = s;
-	decrement_size(nfa);
+    assert(s != NULL);
+    assert(s->nins == 0 && s->nouts == 0);
+
+    s->no = FREESTATE;
+    s->flag = 0;
+    if (s->next != NULL) {
+	s->next->prev = s->prev;
+    } else {
+	assert(s == nfa->slast);
+	nfa->slast = s->prev;
+    }
+    if (s->prev != NULL) {
+	s->prev->next = s->next;
+    } else {
+	assert(s == nfa->states);
+	nfa->states = s->next;
+    }
+    s->prev = NULL;
+    s->next = nfa->free;	/* don't delete it, put it on the free list */
+    nfa->free = s;
+    DecrementSize(nfa);
 }
-
+
 /*
  - destroystate - really get rid of an already-freed state
  ^ static VOID destroystate(struct nfa *, struct state *);
  */
-static VOID
-destroystate(nfa, s)
-struct nfa *nfa;
-struct state *s;
+static void
+destroystate(
+    struct nfa *nfa,
+    struct state *s)
 {
-	struct arcbatch *ab;
-	struct arcbatch *abnext;
-
-	assert(s->no == FREESTATE);
-	for (ab = s->oas.next; ab != NULL; ab = abnext) {
-		abnext = ab->next;
-		FREE(ab);
-	}
-	s->ins = NULL;
-	s->outs = NULL;
-	s->next = NULL;
-	FREE(s);
+    struct arcbatch *ab;
+    struct arcbatch *abnext;
+
+    assert(s->no == FREESTATE);
+    for (ab=s->oas.next ; ab!=NULL ; ab=abnext) {
+	abnext = ab->next;
+	FREE(ab);
+    }
+    s->ins = NULL;
+    s->outs = NULL;
+    s->next = NULL;
+    FREE(s);
 }
-
+
 /*
  - newarc - set up a new arc within an NFA
- ^ static VOID newarc(struct nfa *, int, pcolor, struct state *, 
+ ^ static VOID newarc(struct nfa *, int, pcolor, struct state *,
  ^	struct state *);
  */
-static VOID
-newarc(nfa, t, co, from, to)
-struct nfa *nfa;
-int t;
-pcolor co;
-struct state *from;
-struct state *to;
+static void
+newarc(
+    struct nfa *nfa,
+    int t,
+    pcolor co,
+    struct state *from,
+    struct state *to)
 {
-	struct arc *a;
+    struct arc *a;
 
-	assert(from != NULL && to != NULL);
+    assert(from != NULL && to != NULL);
 
-	/* check for duplicates */
-	for (a = from->outs; a != NULL; a = a->outchain)
-		if (a->to == to && a->co == co && a->type == t)
-			return;
+    /*
+     * Check for duplicates.
+     */
 
-	a = allocarc(nfa, from);
-	if (NISERR())
-		return;
-	assert(a != NULL);
-
-	a->type = t;
-	a->co = (color)co;
-	a->to = to;
-	a->from = from;
-
-	/*
-	 * Put the new arc on the beginning, not the end, of the chains.
-	 * Not only is this easier, it has the very useful side effect that 
-	 * deleting the most-recently-added arc is the cheapest case rather
-	 * than the most expensive one.
-	 */
-	a->inchain = to->ins;
-	to->ins = a;
-	a->outchain = from->outs;
-	from->outs = a;
-
-	from->nouts++;
-	to->nins++;
-
-	if (COLORED(a) && nfa->parent == NULL)
-		colorchain(nfa->cm, a);
+    for (a=from->outs ; a!=NULL ; a=a->outchain) {
+	if (a->to == to && a->co == co && a->type == t) {
+	    return;
+	}
+    }
 
+    a = allocarc(nfa, from);
+    if (NISERR()) {
 	return;
+    }
+    assert(a != NULL);
+
+    a->type = t;
+    a->co = (color) co;
+    a->to = to;
+    a->from = from;
+
+    /*
+     * Put the new arc on the beginning, not the end, of the chains. Not only
+     * is this easier, it has the very useful side effect that deleting the
+     * most-recently-added arc is the cheapest case rather than the most
+     * expensive one.
+     */
+
+    a->inchain = to->ins;
+    to->ins = a;
+    a->outchain = from->outs;
+    from->outs = a;
+
+    from->nouts++;
+    to->nins++;
+
+    if (COLORED(a) && nfa->parent == NULL) {
+	colorchain(nfa->cm, a);
+    }
 }
-
+
 /*
  - allocarc - allocate a new out-arc within a state
  ^ static struct arc *allocarc(struct nfa *, struct state *);
  */
 static struct arc *		/* NULL for failure */
-allocarc(nfa, s)
-struct nfa *nfa;
-struct state *s;
+allocarc(
+    struct nfa *nfa,
+    struct state *s)
 {
-	struct arc *a;
-	struct arcbatch *new;
-	int i;
+    struct arc *a;
 
-	/* shortcut */
-	if (s->free == NULL && s->noas < ABSIZE) {
-		a = &s->oas.a[s->noas];
-		s->noas++;
-		return a;
-	}
+    /*
+     * Shortcut
+     */
 
-	/* if none at hand, get more */
-	if (s->free == NULL) {
-		new = (struct arcbatch *)MALLOC(sizeof(struct arcbatch));
-		if (new == NULL) {
-			NERR(REG_ESPACE);
-			return NULL;
-		}
-		new->next = s->oas.next;
-		s->oas.next = new;
+    if (s->free == NULL && s->noas < ABSIZE) {
+	a = &s->oas.a[s->noas];
+	s->noas++;
+	return a;
+    }
 
-		for (i = 0; i < ABSIZE; i++) {
-			new->a[i].type = 0;
-			new->a[i].freechain = &new->a[i+1];
-		}
-		new->a[ABSIZE-1].freechain = NULL;
-		s->free = &new->a[0];
+    /*
+     * if none at hand, get more
+     */
+
+    if (s->free == NULL) {
+	struct arcbatch *newAb = (struct arcbatch *)
+		MALLOC(sizeof(struct arcbatch));
+	int i;
+
+	if (newAb == NULL) {
+	    NERR(REG_ESPACE);
+	    return NULL;
 	}
-	assert(s->free != NULL);
+	newAb->next = s->oas.next;
+	s->oas.next = newAb;
 
-	a = s->free;
-	s->free = a->freechain;
-	return a;
+	for (i=0 ; i<ABSIZE ; i++) {
+	    newAb->a[i].type = 0;
+	    newAb->a[i].freechain = &newAb->a[i+1];
+	}
+	newAb->a[ABSIZE-1].freechain = NULL;
+	s->free = &newAb->a[0];
+    }
+    assert(s->free != NULL);
+
+    a = s->free;
+    s->free = a->freechain;
+    return a;
 }
-
+
 /*
  - freearc - free an arc
  ^ static VOID freearc(struct nfa *, struct arc *);
  */
-static VOID
-freearc(nfa, victim)
-struct nfa *nfa;
-struct arc *victim;
+static void
+freearc(
+    struct nfa *nfa,
+    struct arc *victim)
 {
-	struct state *from = victim->from;
-	struct state *to = victim->to;
-	struct arc *a;
-
-	assert(victim->type != 0);
-
-	/* take it off color chain if necessary */
-	if (COLORED(victim) && nfa->parent == NULL)
-		uncolorchain(nfa->cm, victim);
-
-	/* take it off source's out-chain */
-	assert(from != NULL);
-	assert(from->outs != NULL);
-	a = from->outs;
-	if (a == victim)		/* simple case:  first in chain */
-		from->outs = victim->outchain;
-	else {
-		for (; a != NULL && a->outchain != victim; a = a->outchain)
-			continue;
-		assert(a != NULL);
-		a->outchain = victim->outchain;
+    struct state *from = victim->from;
+    struct state *to = victim->to;
+    struct arc *a;
+
+    assert(victim->type != 0);
+
+    /*
+     * Take it off color chain if necessary.
+     */
+
+    if (COLORED(victim) && nfa->parent == NULL) {
+	uncolorchain(nfa->cm, victim);
+    }
+
+    /*
+     * Take it off source's out-chain.
+     */
+
+    assert(from != NULL);
+    assert(from->outs != NULL);
+    a = from->outs;
+    if (a == victim) {		/* simple case: first in chain */
+	from->outs = victim->outchain;
+    } else {
+	for (; a!=NULL && a->outchain!=victim ; a=a->outchain) {
+	    continue;
 	}
-	from->nouts--;
-
-	/* take it off target's in-chain */
-	assert(to != NULL);
-	assert(to->ins != NULL);
-	a = to->ins;
-	if (a == victim)		/* simple case:  first in chain */
-		to->ins = victim->inchain;
-	else {
-		for (; a != NULL && a->inchain != victim; a = a->inchain)
-			continue;
-		assert(a != NULL);
-		a->inchain = victim->inchain;
+	assert(a != NULL);
+	a->outchain = victim->outchain;
+    }
+    from->nouts--;
+
+    /*
+     * Take it off target's in-chain.
+     */
+
+    assert(to != NULL);
+    assert(to->ins != NULL);
+    a = to->ins;
+    if (a == victim) {		/* simple case: first in chain */
+	to->ins = victim->inchain;
+    } else {
+	for (; a->inchain!=victim ; a=a->inchain) {
+	    assert(a->inchain != NULL);
+	    continue;
 	}
-	to->nins--;
-
-	/* clean up and place on free list */
-	victim->type = 0;
-	victim->from = NULL;		/* precautions... */
-	victim->to = NULL;
-	victim->inchain = NULL;
-	victim->outchain = NULL;
-	victim->freechain = from->free;
-	from->free = victim;
+	a->inchain = victim->inchain;
+    }
+    to->nins--;
+
+    /*
+     * Clean up and place on free list.
+     */
+
+    victim->type = 0;
+    victim->from = NULL;	/* precautions... */
+    victim->to = NULL;
+    victim->inchain = NULL;
+    victim->outchain = NULL;
+    victim->freechain = from->free;
+    from->free = victim;
 }
-
+
 /*
  - findarc - find arc, if any, from given source with given type and color
  * If there is more than one such arc, the result is random.
  ^ static struct arc *findarc(struct state *, int, pcolor);
  */
 static struct arc *
-findarc(s, type, co)
-struct state *s;
-int type;
-pcolor co;
+findarc(
+    struct state *s,
+    int type,
+    pcolor co)
 {
-	struct arc *a;
+    struct arc *a;
 
-	for (a = s->outs; a != NULL; a = a->outchain)
-		if (a->type == type && a->co == co)
-			return a;
-	return NULL;
+    for (a=s->outs ; a!=NULL ; a=a->outchain) {
+	if (a->type == type && a->co == co) {
+	    return a;
+	}
+    }
+    return NULL;
 }
-
+
 /*
  - cparc - allocate a new arc within an NFA, copying details from old one
- ^ static VOID cparc(struct nfa *, struct arc *, struct state *, 
+ ^ static VOID cparc(struct nfa *, struct arc *, struct state *,
  ^ 	struct state *);
  */
-static VOID
-cparc(nfa, oa, from, to)
-struct nfa *nfa;
-struct arc *oa;
-struct state *from;
-struct state *to;
+static void
+cparc(
+    struct nfa *nfa,
+    struct arc *oa,
+    struct state *from,
+    struct state *to)
 {
-	newarc(nfa, oa->type, oa->co, from, to);
+    newarc(nfa, oa->type, oa->co, from, to);
 }
-
+
 /*
  - moveins - move all in arcs of a state to another state
  * You might think this could be done better by just updating the
@@ -501,341 +540,365 @@ struct state *to;
  * ones to exploit the suppression built into newarc.
  ^ static VOID moveins(struct nfa *, struct state *, struct state *);
  */
-static VOID
-moveins(nfa, old, new)
-struct nfa *nfa;
-struct state *old;
-struct state *new;
+static void
+moveins(
+    struct nfa *nfa,
+    struct state *oldState,
+    struct state *newState)
 {
-	struct arc *a;
+    struct arc *a;
 
-	assert(old != new);
+    assert(oldState != newState);
 
-	while ((a = old->ins) != NULL) {
-		cparc(nfa, a, a->from, new);
-		freearc(nfa, a);
-	}
-	assert(old->nins == 0);
-	assert(old->ins == NULL);
+    while ((a = oldState->ins) != NULL) {
+	cparc(nfa, a, a->from, newState);
+	freearc(nfa, a);
+    }
+    assert(oldState->nins == 0);
+    assert(oldState->ins == NULL);
 }
-
+
 /*
  - copyins - copy all in arcs of a state to another state
  ^ static VOID copyins(struct nfa *, struct state *, struct state *);
  */
-static VOID
-copyins(nfa, old, new)
-struct nfa *nfa;
-struct state *old;
-struct state *new;
+static void
+copyins(
+    struct nfa *nfa,
+    struct state *oldState,
+    struct state *newState)
 {
-	struct arc *a;
+    struct arc *a;
 
-	assert(old != new);
+    assert(oldState != newState);
 
-	for (a = old->ins; a != NULL; a = a->inchain)
-		cparc(nfa, a, a->from, new);
+    for (a=oldState->ins ; a!=NULL ; a=a->inchain) {
+	cparc(nfa, a, a->from, newState);
+    }
 }
-
+
 /*
  - moveouts - move all out arcs of a state to another state
  ^ static VOID moveouts(struct nfa *, struct state *, struct state *);
  */
-static VOID
-moveouts(nfa, old, new)
-struct nfa *nfa;
-struct state *old;
-struct state *new;
+static void
+moveouts(
+    struct nfa *nfa,
+    struct state *oldState,
+    struct state *newState)
 {
-	struct arc *a;
+    struct arc *a;
 
-	assert(old != new);
+    assert(oldState != newState);
 
-	while ((a = old->outs) != NULL) {
-		cparc(nfa, a, new, a->to);
-		freearc(nfa, a);
-	}
+    while ((a = oldState->outs) != NULL) {
+	cparc(nfa, a, newState, a->to);
+	freearc(nfa, a);
+    }
 }
-
+
 /*
  - copyouts - copy all out arcs of a state to another state
  ^ static VOID copyouts(struct nfa *, struct state *, struct state *);
  */
-static VOID
-copyouts(nfa, old, new)
-struct nfa *nfa;
-struct state *old;
-struct state *new;
+static void
+copyouts(
+    struct nfa *nfa,
+    struct state *oldState,
+    struct state *newState)
 {
-	struct arc *a;
+    struct arc *a;
 
-	assert(old != new);
+    assert(oldState != newState);
 
-	for (a = old->outs; a != NULL; a = a->outchain)
-		cparc(nfa, a, new, a->to);
+    for (a=oldState->outs ; a!=NULL ; a=a->outchain) {
+	cparc(nfa, a, newState, a->to);
+    }
 }
-
+
 /*
  - cloneouts - copy out arcs of a state to another state pair, modifying type
  ^ static VOID cloneouts(struct nfa *, struct state *, struct state *,
  ^ 	struct state *, int);
  */
-static VOID
-cloneouts(nfa, old, from, to, type)
-struct nfa *nfa;
-struct state *old;
-struct state *from;
-struct state *to;
-int type;
+static void
+cloneouts(
+    struct nfa *nfa,
+    struct state *old,
+    struct state *from,
+    struct state *to,
+    int type)
 {
-	struct arc *a;
+    struct arc *a;
 
-	assert(old != from);
+    assert(old != from);
 
-	for (a = old->outs; a != NULL; a = a->outchain)
-		newarc(nfa, type, a->co, from, to);
+    for (a=old->outs ; a!=NULL ; a=a->outchain) {
+	newarc(nfa, type, a->co, from, to);
+    }
 }
-
+
 /*
  - delsub - delete a sub-NFA, updating subre pointers if necessary
  * This uses a recursive traversal of the sub-NFA, marking already-seen
  * states using their tmp pointer.
  ^ static VOID delsub(struct nfa *, struct state *, struct state *);
  */
-static VOID
-delsub(nfa, lp, rp)
-struct nfa *nfa;
-struct state *lp;	/* the sub-NFA goes from here... */
-struct state *rp;	/* ...to here, *not* inclusive */
+static void
+delsub(
+    struct nfa *nfa,
+    struct state *lp,		/* the sub-NFA goes from here... */
+    struct state *rp)		/* ...to here, *not* inclusive */
 {
-	assert(lp != rp);
+    assert(lp != rp);
 
-	rp->tmp = rp;			/* mark end */
+    rp->tmp = rp;		/* mark end */
 
-	deltraverse(nfa, lp, lp);
-	assert(lp->nouts == 0 && rp->nins == 0);	/* did the job */
-	assert(lp->no != FREESTATE && rp->no != FREESTATE);	/* no more */
+    deltraverse(nfa, lp, lp);
+    assert(lp->nouts == 0 && rp->nins == 0);	/* did the job */
+    assert(lp->no != FREESTATE && rp->no != FREESTATE);	/* no more */
 
-	rp->tmp = NULL;			/* unmark end */
-	lp->tmp = NULL;			/* and begin, marked by deltraverse */
+    rp->tmp = NULL;		/* unmark end */
+    lp->tmp = NULL;		/* and begin, marked by deltraverse */
 }
-
+
 /*
  - deltraverse - the recursive heart of delsub
  * This routine's basic job is to destroy all out-arcs of the state.
  ^ static VOID deltraverse(struct nfa *, struct state *, struct state *);
  */
-static VOID
-deltraverse(nfa, leftend, s)
-struct nfa *nfa;
-struct state *leftend;
-struct state *s;
+static void
+deltraverse(
+    struct nfa *nfa,
+    struct state *leftend,
+    struct state *s)
 {
-	struct arc *a;
-	struct state *to;
-
-	if (s->nouts == 0)
-		return;			/* nothing to do */
-	if (s->tmp != NULL)
-		return;			/* already in progress */
-
-	s->tmp = s;			/* mark as in progress */
-
-	while ((a = s->outs) != NULL) {
-		to = a->to;
-		deltraverse(nfa, leftend, to);
-		assert(to->nouts == 0 || to->tmp != NULL);
-		freearc(nfa, a);
-		if (to->nins == 0 && to->tmp == NULL) {
-			assert(to->nouts == 0);
-			freestate(nfa, to);
-		}
+    struct arc *a;
+    struct state *to;
+
+    if (s->nouts == 0) {
+	return;			/* nothing to do */
+    }
+    if (s->tmp != NULL) {
+	return;			/* already in progress */
+    }
+
+    s->tmp = s;			/* mark as in progress */
+
+    while ((a = s->outs) != NULL) {
+	to = a->to;
+	deltraverse(nfa, leftend, to);
+	assert(to->nouts == 0 || to->tmp != NULL);
+	freearc(nfa, a);
+	if (to->nins == 0 && to->tmp == NULL) {
+	    assert(to->nouts == 0);
+	    freestate(nfa, to);
 	}
+    }
 
-	assert(s->no != FREESTATE);	/* we're still here */
-	assert(s == leftend || s->nins != 0);	/* and still reachable */
-	assert(s->nouts == 0);		/* but have no outarcs */
+    assert(s->no != FREESTATE);	/* we're still here */
+    assert(s == leftend || s->nins != 0);	/* and still reachable */
+    assert(s->nouts == 0);	/* but have no outarcs */
 
-	s->tmp = NULL;			/* we're done here */
+    s->tmp = NULL;		/* we're done here */
 }
-
+
 /*
  - dupnfa - duplicate sub-NFA
- * Another recursive traversal, this time using tmp to point to duplicates
- * as well as mark already-seen states.  (You knew there was a reason why
- * it's a state pointer, didn't you? :-))
- ^ static VOID dupnfa(struct nfa *, struct state *, struct state *, 
+ * Another recursive traversal, this time using tmp to point to duplicates as
+ * well as mark already-seen states. (You knew there was a reason why it's a
+ * state pointer, didn't you? :-))
+ ^ static VOID dupnfa(struct nfa *, struct state *, struct state *,
  ^ 	struct state *, struct state *);
  */
-static VOID
-dupnfa(nfa, start, stop, from, to)
-struct nfa *nfa;
-struct state *start;		/* duplicate of subNFA starting here */
-struct state *stop;		/* and stopping here */
-struct state *from;		/* stringing duplicate from here */
-struct state *to;		/* to here */
+static void
+dupnfa(
+    struct nfa *nfa,
+    struct state *start,	/* duplicate of subNFA starting here */
+    struct state *stop,		/* and stopping here */
+    struct state *from,		/* stringing duplicate from here */
+    struct state *to)		/* to here */
 {
-	if (start == stop) {
-		newarc(nfa, EMPTY, 0, from, to);
-		return;
-	}
+    if (start == stop) {
+	newarc(nfa, EMPTY, 0, from, to);
+	return;
+    }
 
-	stop->tmp = to;
-	duptraverse(nfa, start, from);
-	/* done, except for clearing out the tmp pointers */
+    stop->tmp = to;
+    duptraverse(nfa, start, from);
+    /* done, except for clearing out the tmp pointers */
 
-	stop->tmp = NULL;
-	cleartraverse(nfa, start);
+    stop->tmp = NULL;
+    cleartraverse(nfa, start);
 }
-
+
 /*
  - duptraverse - recursive heart of dupnfa
  ^ static VOID duptraverse(struct nfa *, struct state *, struct state *);
  */
-static VOID
-duptraverse(nfa, s, stmp)
-struct nfa *nfa;
-struct state *s;
-struct state *stmp;		/* s's duplicate, or NULL */
+static void
+duptraverse(
+    struct nfa *nfa,
+    struct state *s,
+    struct state *stmp)		/* s's duplicate, or NULL */
 {
-	struct arc *a;
+    struct arc *a;
 
-	if (s->tmp != NULL)
-		return;		/* already done */
+    if (s->tmp != NULL) {
+	return;			/* already done */
+    }
 
-	s->tmp = (stmp == NULL) ? newstate(nfa) : stmp;
-	if (s->tmp == NULL) {
-		assert(NISERR());
-		return;
-	}
+    s->tmp = (stmp == NULL) ? newstate(nfa) : stmp;
+    if (s->tmp == NULL) {
+	assert(NISERR());
+	return;
+    }
 
-	for (a = s->outs; a != NULL && !NISERR(); a = a->outchain) {
-		duptraverse(nfa, a->to, (struct state *)NULL);
-		if (NISERR())
-			break;
-		assert(a->to->tmp != NULL);
-		cparc(nfa, a, s->tmp, a->to->tmp);
+    for (a=s->outs ; a!=NULL && !NISERR() ; a=a->outchain) {
+	duptraverse(nfa, a->to, NULL);
+	if (NISERR()) {
+	    break;
 	}
+	assert(a->to->tmp != NULL);
+	cparc(nfa, a, s->tmp, a->to->tmp);
+    }
 }
-
+
 /*
  - cleartraverse - recursive cleanup for algorithms that leave tmp ptrs set
  ^ static VOID cleartraverse(struct nfa *, struct state *);
  */
-static VOID
-cleartraverse(nfa, s)
-struct nfa *nfa;
-struct state *s;
+static void
+cleartraverse(
+    struct nfa *nfa,
+    struct state *s)
 {
-	struct arc *a;
+    struct arc *a;
 
-	if (s->tmp == NULL)
-		return;
-	s->tmp = NULL;
+    if (s->tmp == NULL) {
+	return;
+    }
+    s->tmp = NULL;
 
-	for (a = s->outs; a != NULL; a = a->outchain)
-		cleartraverse(nfa, a->to);
+    for (a=s->outs ; a!=NULL ; a=a->outchain) {
+	cleartraverse(nfa, a->to);
+    }
 }
-
+
 /*
  - specialcolors - fill in special colors for an NFA
  ^ static VOID specialcolors(struct nfa *);
  */
-static VOID
-specialcolors(nfa)
-struct nfa *nfa;
+static void
+specialcolors(
+    struct nfa *nfa)
 {
-	/* false colors for BOS, BOL, EOS, EOL */
-	if (nfa->parent == NULL) {
-		nfa->bos[0] = pseudocolor(nfa->cm);
-		nfa->bos[1] = pseudocolor(nfa->cm);
-		nfa->eos[0] = pseudocolor(nfa->cm);
-		nfa->eos[1] = pseudocolor(nfa->cm);
-	} else {
-		assert(nfa->parent->bos[0] != COLORLESS);
-		nfa->bos[0] = nfa->parent->bos[0];
-		assert(nfa->parent->bos[1] != COLORLESS);
-		nfa->bos[1] = nfa->parent->bos[1];
-		assert(nfa->parent->eos[0] != COLORLESS);
-		nfa->eos[0] = nfa->parent->eos[0];
-		assert(nfa->parent->eos[1] != COLORLESS);
-		nfa->eos[1] = nfa->parent->eos[1];
-	}
+    /*
+     * False colors for BOS, BOL, EOS, EOL
+     */
+
+    if (nfa->parent == NULL) {
+	nfa->bos[0] = pseudocolor(nfa->cm);
+	nfa->bos[1] = pseudocolor(nfa->cm);
+	nfa->eos[0] = pseudocolor(nfa->cm);
+	nfa->eos[1] = pseudocolor(nfa->cm);
+    } else {
+	assert(nfa->parent->bos[0] != COLORLESS);
+	nfa->bos[0] = nfa->parent->bos[0];
+	assert(nfa->parent->bos[1] != COLORLESS);
+	nfa->bos[1] = nfa->parent->bos[1];
+	assert(nfa->parent->eos[0] != COLORLESS);
+	nfa->eos[0] = nfa->parent->eos[0];
+	assert(nfa->parent->eos[1] != COLORLESS);
+	nfa->eos[1] = nfa->parent->eos[1];
+    }
 }
-
+
 /*
  - optimize - optimize an NFA
  ^ static long optimize(struct nfa *, FILE *);
  */
 static long			/* re_info bits */
-optimize(nfa, f)
-struct nfa *nfa;
-FILE *f;			/* for debug output; NULL none */
+optimize(
+    struct nfa *nfa,
+    FILE *f)			/* for debug output; NULL none */
 {
-	int verbose = (f != NULL) ? 1 : 0;
-
-	if (verbose)
-		fprintf(f, "\ninitial cleanup:\n");
-	cleanup(nfa);		/* may simplify situation */
-	if (verbose)
-		dumpnfa(nfa, f);
-	if (verbose)
-		fprintf(f, "\nempties:\n");
-	fixempties(nfa, f);	/* get rid of EMPTY arcs */
-	if (verbose)
-		fprintf(f, "\nconstraints:\n");
-	pullback(nfa, f);	/* pull back constraints backward */
-	pushfwd(nfa, f);	/* push fwd constraints forward */
-	if (verbose)
-		fprintf(f, "\nfinal cleanup:\n");
-	cleanup(nfa);		/* final tidying */
-	return analyze(nfa);	/* and analysis */
+    int verbose = (f != NULL) ? 1 : 0;
+
+    if (verbose) {
+	fprintf(f, "\ninitial cleanup:\n");
+    }
+    cleanup(nfa);		/* may simplify situation */
+    if (verbose) {
+	dumpnfa(nfa, f);
+    }
+    if (verbose) {
+	fprintf(f, "\nempties:\n");
+    }
+    fixempties(nfa, f);		/* get rid of EMPTY arcs */
+    if (verbose) {
+	fprintf(f, "\nconstraints:\n");
+    }
+    pullback(nfa, f);		/* pull back constraints backward */
+    pushfwd(nfa, f);		/* push fwd constraints forward */
+    if (verbose) {
+	fprintf(f, "\nfinal cleanup:\n");
+    }
+    cleanup(nfa);		/* final tidying */
+    return analyze(nfa);	/* and analysis */
 }
-
+
 /*
  - pullback - pull back constraints backward to (with luck) eliminate them
  ^ static VOID pullback(struct nfa *, FILE *);
  */
-static VOID
-pullback(nfa, f)
-struct nfa *nfa;
-FILE *f;			/* for debug output; NULL none */
+static void
+pullback(
+    struct nfa *nfa,
+    FILE *f)			/* for debug output; NULL none */
 {
-	struct state *s;
-	struct state *nexts;
-	struct arc *a;
-	struct arc *nexta;
-	int progress;
-
-	/* find and pull until there are no more */
-	do {
-		progress = 0;
-		for (s = nfa->states; s != NULL && !NISERR(); s = nexts) {
-			nexts = s->next;
-			for (a = s->outs; a != NULL && !NISERR(); a = nexta) {
-				nexta = a->outchain;
-				if (a->type == '^' || a->type == BEHIND)
-					if (pull(nfa, a))
-						progress = 1;
-				assert(nexta == NULL || s->no != FREESTATE);
-			}
-		}
-		if (progress && f != NULL)
-			dumpnfa(nfa, f);
-	} while (progress && !NISERR());
-	if (NISERR())
-		return;
-
-	for (a = nfa->pre->outs; a != NULL; a = nexta) {
+    struct state *s;
+    struct state *nexts;
+    struct arc *a;
+    struct arc *nexta;
+    int progress;
+
+    /*
+     * Find and pull until there are no more.
+     */
+
+    do {
+	progress = 0;
+	for (s=nfa->states ; s!=NULL && !NISERR() ; s=nexts) {
+	    nexts = s->next;
+	    for (a=s->outs ; a!=NULL && !NISERR() ; a=nexta) {
 		nexta = a->outchain;
-		if (a->type == '^') {
-			assert(a->co == 0 || a->co == 1);
-			newarc(nfa, PLAIN, nfa->bos[a->co], a->from, a->to);
-			freearc(nfa, a);
+		if (a->type == '^' || a->type == BEHIND) {
+		    if (pull(nfa, a)) {
+			progress = 1;
+		    }
 		}
+		assert(nexta == NULL || s->no != FREESTATE);
+	    }
+	}
+	if (progress && f != NULL) {
+	    dumpnfa(nfa, f);
+	}
+    } while (progress && !NISERR());
+    if (NISERR()) {
+	return;
+    }
+
+    for (a=nfa->pre->outs ; a!=NULL ; a=nexta) {
+	nexta = a->outchain;
+	if (a->type == '^') {
+	    assert(a->co == 0 || a->co == 1);
+	    newarc(nfa, PLAIN, nfa->bos[a->co], a->from, a->to);
+	    freearc(nfa, a);
 	}
+    }
 }
-
+
 /*
  - pull - pull a back constraint backward past its source state
  * A significant property of this function is that it deletes at most
@@ -844,136 +907,155 @@ FILE *f;			/* for debug output; NULL none */
  ^ static int pull(struct nfa *, struct arc *);
  */
 static int			/* 0 couldn't, 1 could */
-pull(nfa, con)
-struct nfa *nfa;
-struct arc *con;
+pull(
+    struct nfa *nfa,
+    struct arc *con)
 {
-	struct state *from = con->from;
-	struct state *to = con->to;
-	struct arc *a;
-	struct arc *nexta;
-	struct state *s;
-
-	if (from == to) {	/* circular constraint is pointless */
-		freearc(nfa, con);
-		return 1;
-	}
-	if (from->flag)		/* can't pull back beyond start */
-		return 0;
-	if (from->nins == 0) {	/* unreachable */
-		freearc(nfa, con);
-		return 1;
-	}
+    struct state *from = con->from;
+    struct state *to = con->to;
+    struct arc *a;
+    struct arc *nexta;
+    struct state *s;
+
+    if (from == to) {		/* circular constraint is pointless */
+	freearc(nfa, con);
+	return 1;
+    }
+    if (from->flag) {		/* can't pull back beyond start */
+	return 0;
+    }
+    if (from->nins == 0) {	/* unreachable */
+	freearc(nfa, con);
+	return 1;
+    }
 
-	/*
-	 * DGP 2007-11-15: Cloning a state with a circular constraint on its
-	 * list of outs can lead to trouble [Bug 1810038], so get rid of them
-	 * first.
-	 */
+    /*
+     * DGP 2007-11-15: Cloning a state with a circular constraint on its list
+     * of outs can lead to trouble [Bug 1810038], so get rid of them first.
+     */
 
-	for (a = from->outs; a != NULL; a = nexta) {
-		nexta = a->outchain;
-		switch (a->type) {
-		case '^':
-		case '$':
-		case BEHIND:
-		case AHEAD:
-			if (from == a->to) {
-				freearc(nfa, a);
-			}
-			break;
-		}
+    for (a = from->outs; a != NULL; a = nexta) {
+	nexta = a->outchain;
+	switch (a->type) {
+	case '^':
+	case '$':
+	case BEHIND:
+	case AHEAD:
+	    if (from == a->to) {
+		freearc(nfa, a);
+	    }
+	    break;
 	}
+    }
 
-	/* first, clone from state if necessary to avoid other outarcs */
-	if (from->nouts > 1) {
-		s = newstate(nfa);
-		if (NISERR())
-			return 0;
-		assert(to != from);		/* con is not an inarc */
-		copyins(nfa, from, s);		/* duplicate inarcs */
-		cparc(nfa, con, s, to);		/* move constraint arc */
-		freearc(nfa, con);
-		from = s;
-		con = from->outs;
-	}
-	assert(from->nouts == 1);
+    /*
+     * First, clone from state if necessary to avoid other outarcs.
+     */
 
-	/* propagate the constraint into the from state's inarcs */
-	for (a = from->ins; a != NULL; a = nexta) {
-		nexta = a->inchain;
-		switch (combine(con, a)) {
-		case INCOMPATIBLE:	/* destroy the arc */
-			freearc(nfa, a);
-			break;
-		case SATISFIED:		/* no action needed */
-			break;
-		case COMPATIBLE:	/* swap the two arcs, more or less */
-			s = newstate(nfa);
-			if (NISERR())
-				return 0;
-			cparc(nfa, a, s, to);		/* anticipate move */
-			cparc(nfa, con, a->from, s);
-			if (NISERR())
-				return 0;
-			freearc(nfa, a);
-			break;
-		default:
-			assert(NOTREACHED);
-			break;
-		}
+    if (from->nouts > 1) {
+	s = newstate(nfa);
+	if (NISERR()) {
+	    return 0;
+	}
+	assert(to != from);	/* con is not an inarc */
+	copyins(nfa, from, s);	/* duplicate inarcs */
+	cparc(nfa, con, s, to);	/* move constraint arc */
+	freearc(nfa, con);
+	from = s;
+	con = from->outs;
+    }
+    assert(from->nouts == 1);
+
+    /*
+     * Propagate the constraint into the from state's inarcs.
+     */
+
+    for (a=from->ins ; a!=NULL ; a=nexta) {
+	nexta = a->inchain;
+	switch (combine(con, a)) {
+	case INCOMPATIBLE:	/* destroy the arc */
+	    freearc(nfa, a);
+	    break;
+	case SATISFIED:		/* no action needed */
+	    break;
+	case COMPATIBLE:	/* swap the two arcs, more or less */
+	    s = newstate(nfa);
+	    if (NISERR()) {
+		return 0;
+	    }
+	    cparc(nfa, a, s, to);	/* anticipate move */
+	    cparc(nfa, con, a->from, s);
+	    if (NISERR()) {
+		return 0;
+	    }
+	    freearc(nfa, a);
+	    break;
+	default:
+	    assert(NOTREACHED);
+	    break;
 	}
+    }
 
-	/* remaining inarcs, if any, incorporate the constraint */
-	moveins(nfa, from, to);
-	dropstate(nfa, from);		/* will free the constraint */
-	return 1;
-}
+    /*
+     * Remaining inarcs, if any, incorporate the constraint.
+     */
 
+    moveins(nfa, from, to);
+    dropstate(nfa, from);	/* will free the constraint */
+    return 1;
+}
+
 /*
  - pushfwd - push forward constraints forward to (with luck) eliminate them
  ^ static VOID pushfwd(struct nfa *, FILE *);
  */
-static VOID
-pushfwd(nfa, f)
-struct nfa *nfa;
-FILE *f;			/* for debug output; NULL none */
+static void
+pushfwd(
+    struct nfa *nfa,
+    FILE *f)			/* for debug output; NULL none */
 {
-	struct state *s;
-	struct state *nexts;
-	struct arc *a;
-	struct arc *nexta;
-	int progress;
-
-	/* find and push until there are no more */
-	do {
-		progress = 0;
-		for (s = nfa->states; s != NULL && !NISERR(); s = nexts) {
-			nexts = s->next;
-			for (a = s->ins; a != NULL && !NISERR(); a = nexta) {
-				nexta = a->inchain;
-				if (a->type == '$' || a->type == AHEAD)
-					if (push(nfa, a))
-						progress = 1;
-				assert(nexta == NULL || s->no != FREESTATE);
-			}
-		}
-		if (progress && f != NULL)
-			dumpnfa(nfa, f);
-	} while (progress && !NISERR());
-	if (NISERR())
-		return;
-
-	for (a = nfa->post->ins; a != NULL; a = nexta) {
+    struct state *s;
+    struct state *nexts;
+    struct arc *a;
+    struct arc *nexta;
+    int progress;
+
+    /*
+     * Find and push until there are no more.
+     */
+
+    do {
+	progress = 0;
+	for (s=nfa->states ; s!=NULL && !NISERR() ; s=nexts) {
+	    nexts = s->next;
+	    for (a = s->ins; a != NULL && !NISERR(); a = nexta) {
 		nexta = a->inchain;
-		if (a->type == '$') {
-			assert(a->co == 0 || a->co == 1);
-			newarc(nfa, PLAIN, nfa->eos[a->co], a->from, a->to);
-			freearc(nfa, a);
+		if (a->type == '$' || a->type == AHEAD) {
+		    if (push(nfa, a)) {
+			progress = 1;
+		    }
 		}
+		assert(nexta == NULL || s->no != FREESTATE);
+	    }
 	}
+	if (progress && f != NULL) {
+	    dumpnfa(nfa, f);
+	}
+    } while (progress && !NISERR());
+    if (NISERR()) {
+	return;
+    }
+
+    for (a = nfa->post->ins; a != NULL; a = nexta) {
+	nexta = a->inchain;
+	if (a->type == '$') {
+	    assert(a->co == 0 || a->co == 1);
+	    newarc(nfa, PLAIN, nfa->eos[a->co], a->from, a->to);
+	    freearc(nfa, a);
+	}
+    }
 }
-
+
 /*
  - push - push a forward constraint forward past its destination state
  * A significant property of this function is that it deletes at most
@@ -982,94 +1064,106 @@ FILE *f;			/* for debug output; NULL none */
  ^ static int push(struct nfa *, struct arc *);
  */
 static int			/* 0 couldn't, 1 could */
-push(nfa, con)
-struct nfa *nfa;
-struct arc *con;
+push(
+    struct nfa *nfa,
+    struct arc *con)
 {
-	struct state *from = con->from;
-	struct state *to = con->to;
-	struct arc *a;
-	struct arc *nexta;
-	struct state *s;
-
-	if (to == from) {	/* circular constraint is pointless */
-		freearc(nfa, con);
-		return 1;
-	}
-	if (to->flag)		/* can't push forward beyond end */
-		return 0;
-	if (to->nouts == 0) {	/* dead end */
-		freearc(nfa, con);
-		return 1;
+    struct state *from = con->from;
+    struct state *to = con->to;
+    struct arc *a;
+    struct arc *nexta;
+    struct state *s;
+
+    if (to == from) {		/* circular constraint is pointless */
+	freearc(nfa, con);
+	return 1;
+    }
+    if (to->flag) {		/* can't push forward beyond end */
+	return 0;
+    }
+    if (to->nouts == 0) {	/* dead end */
+	freearc(nfa, con);
+	return 1;
+    }
+
+    /*
+     * DGP 2007-11-15: Here we duplicate the same protections as appear
+     * in pull() above to avoid troubles with cloning a state with a
+     * circular constraint on its list of ins.  It is not clear whether
+     * this is necessary, or is protecting against a "can't happen".
+     * Any test case that actually leads to a freearc() call here would
+     * be a welcome addition to the test suite.
+     */
+
+    for (a = to->ins; a != NULL; a = nexta) {
+	nexta = a->inchain;
+	switch (a->type) {
+	case '^':
+	case '$':
+	case BEHIND:
+	case AHEAD:
+	    if (a->from == to) {
+		freearc(nfa, a);
+	    }
+	    break;
 	}
+    }
+    /*
+     * First, clone to state if necessary to avoid other inarcs.
+     */
 
-	/*
-	 * DGP 2007-11-15: Here we duplicate the same protections as appear
-	 * in pull() above to avoid troubles with cloning a state with a
-	 * circular constraint on its list of ins.  It is not clear whether
-	 * this is necessary, or is protecting against a "can't happen".
-	 * Any test case that actually leads to a freearc() call here would
-	 * be a welcome addition to the test suite.
-	 */
-
-	for (a = to->ins; a != NULL; a = nexta) {
-		nexta = a->inchain;
-		switch (a->type) {
-		case '^':
-		case '$':
-		case BEHIND:
-		case AHEAD:
-			if (a->from == to) {
-				freearc(nfa, a);
-			}
-			break;
-		}
+    if (to->nins > 1) {
+	s = newstate(nfa);
+	if (NISERR()) {
+	    return 0;
 	}
-
-	/* first, clone to state if necessary to avoid other inarcs */
-	if (to->nins > 1) {
-		s = newstate(nfa);
-		if (NISERR())
-			return 0;
-		copyouts(nfa, to, s);		/* duplicate outarcs */
-		cparc(nfa, con, from, s);	/* move constraint */
-		freearc(nfa, con);
-		to = s;
-		con = to->ins;
+	copyouts(nfa, to, s);	/* duplicate outarcs */
+	cparc(nfa, con, from, s);	/* move constraint */
+	freearc(nfa, con);
+	to = s;
+	con = to->ins;
+    }
+    assert(to->nins == 1);
+
+    /*
+     * Propagate the constraint into the to state's outarcs.
+     */
+
+    for (a = to->outs; a != NULL; a = nexta) {
+	nexta = a->outchain;
+	switch (combine(con, a)) {
+	case INCOMPATIBLE:	/* destroy the arc */
+	    freearc(nfa, a);
+	    break;
+	case SATISFIED:		/* no action needed */
+	    break;
+	case COMPATIBLE:	/* swap the two arcs, more or less */
+	    s = newstate(nfa);
+	    if (NISERR()) {
+		return 0;
+	    }
+	    cparc(nfa, con, s, a->to);	/* anticipate move */
+	    cparc(nfa, a, from, s);
+	    if (NISERR()) {
+		return 0;
+	    }
+	    freearc(nfa, a);
+	    break;
+	default:
+	    assert(NOTREACHED);
+	    break;
 	}
-	assert(to->nins == 1);
+    }
 
-	/* propagate the constraint into the to state's outarcs */
-	for (a = to->outs; a != NULL; a = nexta) {
-		nexta = a->outchain;
-		switch (combine(con, a)) {
-		case INCOMPATIBLE:	/* destroy the arc */
-			freearc(nfa, a);
-			break;
-		case SATISFIED:		/* no action needed */
-			break;
-		case COMPATIBLE:	/* swap the two arcs, more or less */
-			s = newstate(nfa);
-			if (NISERR())
-				return 0;
-			cparc(nfa, con, s, a->to);	/* anticipate move */
-			cparc(nfa, a, from, s);
-			if (NISERR())
-				return 0;
-			freearc(nfa, a);
-			break;
-		default:
-			assert(NOTREACHED);
-			break;
-		}
-	}
+    /*
+     * Remaining outarcs, if any, incorporate the constraint.
+     */
 
-	/* remaining outarcs, if any, incorporate the constraint */
-	moveouts(nfa, to, from);
-	dropstate(nfa, to);		/* will free the constraint */
-	return 1;
+    moveouts(nfa, to, from);
+    dropstate(nfa, to);		/* will free the constraint */
+    return 1;
 }
-
+
 /*
  - combine - constraint lands on an arc, what happens?
  ^ #def	INCOMPATIBLE	1	// destroys arc
@@ -1078,417 +1172,468 @@ struct arc *con;
  ^ static int combine(struct arc *, struct arc *);
  */
 static int
-combine(con, a)
-struct arc *con;
-struct arc *a;
+combine(
+    struct arc *con,
+    struct arc *a)
 {
-#	define	CA(ct,at)	(((ct)<<CHAR_BIT) | (at))
-
-	switch (CA(con->type, a->type)) {
-	case CA('^', PLAIN):		/* newlines are handled separately */
-	case CA('$', PLAIN):
-		return INCOMPATIBLE;
-		break;
-	case CA(AHEAD, PLAIN):		/* color constraints meet colors */
-	case CA(BEHIND, PLAIN):
-		if (con->co == a->co)
-			return SATISFIED;
-		return INCOMPATIBLE;
-		break;
-	case CA('^', '^'):		/* collision, similar constraints */
-	case CA('$', '$'):
-	case CA(AHEAD, AHEAD):
-	case CA(BEHIND, BEHIND):
-		if (con->co == a->co)		/* true duplication */
-			return SATISFIED;
-		return INCOMPATIBLE;
-		break;
-	case CA('^', BEHIND):		/* collision, dissimilar constraints */
-	case CA(BEHIND, '^'):
-	case CA('$', AHEAD):
-	case CA(AHEAD, '$'):
-		return INCOMPATIBLE;
-		break;
-	case CA('^', '$'):		/* constraints passing each other */
-	case CA('^', AHEAD):
-	case CA(BEHIND, '$'):
-	case CA(BEHIND, AHEAD):
-	case CA('$', '^'):
-	case CA('$', BEHIND):
-	case CA(AHEAD, '^'):
-	case CA(AHEAD, BEHIND):
-	case CA('^', LACON):
-	case CA(BEHIND, LACON):
-	case CA('$', LACON):
-	case CA(AHEAD, LACON):
-		return COMPATIBLE;
-		break;
+#define CA(ct,at)	(((ct)<<CHAR_BIT) | (at))
+
+    switch (CA(con->type, a->type)) {
+    case CA('^', PLAIN):	/* newlines are handled separately */
+    case CA('$', PLAIN):
+	return INCOMPATIBLE;
+	break;
+    case CA(AHEAD, PLAIN):	/* color constraints meet colors */
+    case CA(BEHIND, PLAIN):
+	if (con->co == a->co) {
+	    return SATISFIED;
+	}
+	return INCOMPATIBLE;
+	break;
+    case CA('^', '^'):		/* collision, similar constraints */
+    case CA('$', '$'):
+    case CA(AHEAD, AHEAD):
+    case CA(BEHIND, BEHIND):
+	if (con->co == a->co) {	/* true duplication */
+	    return SATISFIED;
 	}
-	assert(NOTREACHED);
-	return INCOMPATIBLE;		/* for benefit of blind compilers */
+	return INCOMPATIBLE;
+	break;
+    case CA('^', BEHIND):	/* collision, dissimilar constraints */
+    case CA(BEHIND, '^'):
+    case CA('$', AHEAD):
+    case CA(AHEAD, '$'):
+	return INCOMPATIBLE;
+	break;
+    case CA('^', '$'):		/* constraints passing each other */
+    case CA('^', AHEAD):
+    case CA(BEHIND, '$'):
+    case CA(BEHIND, AHEAD):
+    case CA('$', '^'):
+    case CA('$', BEHIND):
+    case CA(AHEAD, '^'):
+    case CA(AHEAD, BEHIND):
+    case CA('^', LACON):
+    case CA(BEHIND, LACON):
+    case CA('$', LACON):
+    case CA(AHEAD, LACON):
+	return COMPATIBLE;
+	break;
+    }
+    assert(NOTREACHED);
+    return INCOMPATIBLE;	/* for benefit of blind compilers */
 }
-
+
 /*
  - fixempties - get rid of EMPTY arcs
  ^ static VOID fixempties(struct nfa *, FILE *);
  */
-static VOID
-fixempties(nfa, f)
-struct nfa *nfa;
-FILE *f;			/* for debug output; NULL none */
+static void
+fixempties(
+    struct nfa *nfa,
+    FILE *f)			/* for debug output; NULL none */
 {
-	struct state *s;
-	struct state *nexts;
-	struct state *to;
-	struct arc *a;
-	struct arc *nexta;
-	int progress;
-
-	/* find and eliminate empties until there are no more */
-	do {
-		progress = 0;
-		for (s = nfa->states; s != NULL && !NISERR(); s = nexts) {
-			nexts = s->next;
-			for (a = s->outs; a != NULL && !NISERR();
-				a = a->outchain)
-				if (a->type == EMPTY)
-					/* Mark a for deletion; copy arcs
-					 * to preserve graph connectivity
-					 * after it is gone. */
-					unempty(nfa, a);
-
-			/* Now pass through and delete the marked arcs.
-			 * Doing all the deletion after all the marking
-			 * prevents arc copying from resurrecting deleted
-			 * arcs which can cause failure to converge.
-			 * [Tcl Bug 3604074] */
-			for (a = s->outs; a != NULL; a = nexta) {
-				nexta = a->outchain;
-				if (a->from == NULL) {
-					progress = 1;
-		    			to = a->to;
-					a->from = s;
-					freearc(nfa, a);
-					if (to->nins == 0) {
-						while ((a = to->outs))
-							freearc(nfa, a);
-						if (nexts == to)
-							nexts = to->next;
-						freestate(nfa, to);
-					}
-					if (s->nouts == 0) {
-						while ((a = s->ins))
-							freearc(nfa, a);
-						freestate(nfa, s);
-					}
-				}
+    struct state *s;
+    struct state *nexts;
+    struct state *to;
+    struct arc *a;
+    struct arc *nexta;
+    int progress;
+
+    /*
+     * Find and eliminate empties until there are no more.
+     */
+
+    do {
+	progress = 0;
+	for (s = nfa->states; s != NULL && !NISERR(); s = nexts) {
+	    nexts = s->next;
+	    for (a = s->outs; a != NULL && !NISERR(); a = a->outchain) {
+		if (a->type == EMPTY) {
+
+		    /*
+		     *  Mark a for deletion; copy arcs to preserve graph
+		     * connectivity after it is gone.
+		     */
+
+		    unempty(nfa, a);
+		}
+	    }
+
+	    /*
+	     * Now pass through and delete the marked arcs.  Doing all the
+	     * deletion after all the marking prevents arc copying from
+	     * resurrecting deleted arcs which can cause failure to converge.
+	     * [Tcl Bug 3604074]
+	     */
+
+	    for (a = s->outs; a != NULL; a = nexta) {
+		nexta = a->outchain;
+		if (a->from == NULL) {
+		    progress = 1;
+		    to = a->to;
+		    a->from = s;
+		    freearc(nfa, a);
+		    if (to->nins == 0) {
+			while ((a = to->outs)) {
+			    freearc(nfa, a);
 			}
+			if (nexts == to) {
+			    nexts = to->next;
+			}
+			freestate(nfa, to);
+		    }
+		    if (s->nouts == 0) {
+			while ((a = s->ins)) {
+			    freearc(nfa, a);
+			}
+			freestate(nfa, s);
+		    }
 		}
-		if (progress && f != NULL)
-			dumpnfa(nfa, f);
-	} while (progress && !NISERR());
+	    }
+	}
+	if (progress && f != NULL) {
+	    dumpnfa(nfa, f);
+	}
+    } while (progress && !NISERR());
 }
-
+
 /*
  - unempty - optimize out an EMPTY arc, if possible
- * Actually, as it stands this function always succeeds, but the return
- * value is kept with an eye on possible future changes.
+ * Actually, as it stands this function always succeeds, but the return value
+ * is kept with an eye on possible future changes.
  ^ static int unempty(struct nfa *, struct arc *);
  */
 static int			/* 0 couldn't, 1 could */
-unempty(nfa, a)
-struct nfa *nfa;
-struct arc *a;
+unempty(
+    struct nfa *nfa,
+    struct arc *a)
 {
-	struct state *from = a->from;
-	struct state *to = a->to;
-
-	assert(a->type == EMPTY);
-	assert(from != nfa->pre && to != nfa->post);
+    struct state *from = a->from;
+    struct state *to = a->to;
 
-	if (from == to) {		/* vacuous loop */
-		freearc(nfa, a);
-		return 1;
-	}
+    assert(a->type == EMPTY);
+    assert(from != nfa->pre && to != nfa->post);
 
-	/* Mark arc for deletion */
-	a->from = NULL;
+    if (from == to) {		/* vacuous loop */
+	freearc(nfa, a);
+	return 1;
+    }
 
-	if (from->nouts > to->nins) {
-		copyouts(nfa, to, from);
-		return 1;
-	}
-	if (from->nouts < to->nins) {
-		copyins(nfa, from, to);
-		return 1;
-	}
+    /*
+     *  Mark arc for deletion.
+     */
 
-	/* from->nouts == to->nins */
-	/* decide on secondary issue:  move/copy fewest arcs */
-	if (from->nins > to->nouts) {
-		copyouts(nfa, to, from);
-		return 1;
-	}
+    a->from = NULL;
 
+    if (from->nouts > to->nins) {
+	copyouts(nfa, to, from);
+	return 1;
+    }
+    if (from->nouts < to->nins) {
 	copyins(nfa, from, to);
 	return 1;
-}
+    }
+
+    /*
+     * from->nouts == to->nins . decide on secondary issue:  copy fewest arcs
+     */
+
+    if (from->nins > to->nouts) {
+	copyouts(nfa, to, from);
+	return 1;
+    }
 
+    copyins(nfa, from, to);
+    return 1;
+}
+
 /*
  - cleanup - clean up NFA after optimizations
  ^ static VOID cleanup(struct nfa *);
  */
-static VOID
-cleanup(nfa)
-struct nfa *nfa;
+static void
+cleanup(
+    struct nfa *nfa)
 {
-	struct state *s;
-	struct state *nexts;
-	int n;
-
-	/* clear out unreachable or dead-end states */
-	/* use pre to mark reachable, then post to mark can-reach-post */
-	markreachable(nfa, nfa->pre, (struct state *)NULL, nfa->pre);
-	markcanreach(nfa, nfa->post, nfa->pre, nfa->post);
-	for (s = nfa->states; s != NULL; s = nexts) {
-		nexts = s->next;
-		if (s->tmp != nfa->post && !s->flag)
-			dropstate(nfa, s);
+    struct state *s;
+    struct state *nexts;
+    int n;
+
+    /*
+     * Clear out unreachable or dead-end states. Use pre to mark reachable,
+     * then post to mark can-reach-post.
+     */
+
+    markreachable(nfa, nfa->pre, NULL, nfa->pre);
+    markcanreach(nfa, nfa->post, nfa->pre, nfa->post);
+    for (s = nfa->states; s != NULL; s = nexts) {
+	nexts = s->next;
+	if (s->tmp != nfa->post && !s->flag) {
+	    dropstate(nfa, s);
 	}
-	assert(nfa->post->nins == 0 || nfa->post->tmp == nfa->post);
-	cleartraverse(nfa, nfa->pre);
-	assert(nfa->post->nins == 0 || nfa->post->tmp == NULL);
-	/* the nins==0 (final unreachable) case will be caught later */
-
-	/* renumber surviving states */
-	n = 0;
-	for (s = nfa->states; s != NULL; s = s->next)
-		s->no = n++;
-	nfa->nstates = n;
+    }
+    assert(nfa->post->nins == 0 || nfa->post->tmp == nfa->post);
+    cleartraverse(nfa, nfa->pre);
+    assert(nfa->post->nins == 0 || nfa->post->tmp == NULL);
+    /* the nins==0 (final unreachable) case will be caught later */
+
+    /*
+     * Renumber surviving states.
+     */
+
+    n = 0;
+    for (s = nfa->states; s != NULL; s = s->next) {
+	s->no = n++;
+    }
+    nfa->nstates = n;
 }
-
+
 /*
  - markreachable - recursive marking of reachable states
  ^ static VOID markreachable(struct nfa *, struct state *, struct state *,
  ^ 	struct state *);
  */
-static VOID
-markreachable(nfa, s, okay, mark)
-struct nfa *nfa;
-struct state *s;
-struct state *okay;		/* consider only states with this mark */
-struct state *mark;		/* the value to mark with */
+static void
+markreachable(
+    struct nfa *nfa,
+    struct state *s,
+    struct state *okay,		/* consider only states with this mark */
+    struct state *mark)		/* the value to mark with */
 {
-	struct arc *a;
+    struct arc *a;
 
-	if (s->tmp != okay)
-		return;
-	s->tmp = mark;
+    if (s->tmp != okay) {
+	return;
+    }
+    s->tmp = mark;
 
-	for (a = s->outs; a != NULL; a = a->outchain)
-		markreachable(nfa, a->to, okay, mark);
+    for (a = s->outs; a != NULL; a = a->outchain) {
+	markreachable(nfa, a->to, okay, mark);
+    }
 }
-
+
 /*
  - markcanreach - recursive marking of states which can reach here
  ^ static VOID markcanreach(struct nfa *, struct state *, struct state *,
  ^ 	struct state *);
  */
-static VOID
-markcanreach(nfa, s, okay, mark)
-struct nfa *nfa;
-struct state *s;
-struct state *okay;		/* consider only states with this mark */
-struct state *mark;		/* the value to mark with */
+static void
+markcanreach(
+    struct nfa *nfa,
+    struct state *s,
+    struct state *okay,		/* consider only states with this mark */
+    struct state *mark)		/* the value to mark with */
 {
-	struct arc *a;
+    struct arc *a;
 
-	if (s->tmp != okay)
-		return;
-	s->tmp = mark;
+    if (s->tmp != okay) {
+	return;
+    }
+    s->tmp = mark;
 
-	for (a = s->ins; a != NULL; a = a->inchain)
-		markcanreach(nfa, a->from, okay, mark);
+    for (a = s->ins; a != NULL; a = a->inchain) {
+	markcanreach(nfa, a->from, okay, mark);
+    }
 }
-
+
 /*
  - analyze - ascertain potentially-useful facts about an optimized NFA
  ^ static long analyze(struct nfa *);
  */
 static long			/* re_info bits to be ORed in */
-analyze(nfa)
-struct nfa *nfa;
+analyze(
+    struct nfa *nfa)
 {
-	struct arc *a;
-	struct arc *aa;
-
-	if (nfa->pre->outs == NULL)
-		return REG_UIMPOSSIBLE;
-	for (a = nfa->pre->outs; a != NULL; a = a->outchain)
-		for (aa = a->to->outs; aa != NULL; aa = aa->outchain)
-			if (aa->to == nfa->post)
-				return REG_UEMPTYMATCH;
-	return 0;
+    struct arc *a;
+    struct arc *aa;
+
+    if (nfa->pre->outs == NULL) {
+	return REG_UIMPOSSIBLE;
+    }
+    for (a = nfa->pre->outs; a != NULL; a = a->outchain) {
+	for (aa = a->to->outs; aa != NULL; aa = aa->outchain) {
+	    if (aa->to == nfa->post) {
+		return REG_UEMPTYMATCH;
+	    }
+	}
+    }
+    return 0;
 }
-
+
 /*
  - compact - compact an NFA
  ^ static VOID compact(struct nfa *, struct cnfa *);
  */
-static VOID
-compact(nfa, cnfa)
-struct nfa *nfa;
-struct cnfa *cnfa;
+static void
+compact(
+    struct nfa *nfa,
+    struct cnfa *cnfa)
 {
-	struct state *s;
-	struct arc *a;
-	size_t nstates;
-	size_t narcs;
-	struct carc *ca;
-	struct carc *first;
-
-	assert (!NISERR());
-
-	nstates = 0;
-	narcs = 0;
-	for (s = nfa->states; s != NULL; s = s->next) {
-		nstates++;
-		narcs += 1 + s->nouts + 1;
-		/* 1 as a fake for flags, nouts for arcs, 1 as endmarker */
+    struct state *s;
+    struct arc *a;
+    size_t nstates;
+    size_t narcs;
+    struct carc *ca;
+    struct carc *first;
+
+    assert(!NISERR());
+
+    nstates = 0;
+    narcs = 0;
+    for (s = nfa->states; s != NULL; s = s->next) {
+	nstates++;
+	narcs += 1 + s->nouts + 1;
+	/* 1 as a fake for flags, nouts for arcs, 1 as endmarker */
+    }
+
+    cnfa->states = (struct carc **) MALLOC(nstates * sizeof(struct carc *));
+    cnfa->arcs = (struct carc *) MALLOC(narcs * sizeof(struct carc));
+    if (cnfa->states == NULL || cnfa->arcs == NULL) {
+	if (cnfa->states != NULL) {
+	    FREE(cnfa->states);
 	}
-
-	cnfa->states = (struct carc **)MALLOC(nstates * sizeof(struct carc *));
-	cnfa->arcs = (struct carc *)MALLOC(narcs * sizeof(struct carc));
-	if (cnfa->states == NULL || cnfa->arcs == NULL) {
-		if (cnfa->states != NULL)
-			FREE(cnfa->states);
-		if (cnfa->arcs != NULL)
-			FREE(cnfa->arcs);
-		NERR(REG_ESPACE);
-		return;
+	if (cnfa->arcs != NULL) {
+	    FREE(cnfa->arcs);
 	}
-	cnfa->nstates = nstates;
-	cnfa->pre = nfa->pre->no;
-	cnfa->post = nfa->post->no;
-	cnfa->bos[0] = nfa->bos[0];
-	cnfa->bos[1] = nfa->bos[1];
-	cnfa->eos[0] = nfa->eos[0];
-	cnfa->eos[1] = nfa->eos[1];
-	cnfa->ncolors = maxcolor(nfa->cm) + 1;
-	cnfa->flags = 0;
-
-	ca = cnfa->arcs;
-	for (s = nfa->states; s != NULL; s = s->next) {
-		assert((size_t)s->no < nstates);
-		cnfa->states[s->no] = ca;
-		ca->co = 0;		/* clear and skip flags "arc" */
+	NERR(REG_ESPACE);
+	return;
+    }
+    cnfa->nstates = nstates;
+    cnfa->pre = nfa->pre->no;
+    cnfa->post = nfa->post->no;
+    cnfa->bos[0] = nfa->bos[0];
+    cnfa->bos[1] = nfa->bos[1];
+    cnfa->eos[0] = nfa->eos[0];
+    cnfa->eos[1] = nfa->eos[1];
+    cnfa->ncolors = maxcolor(nfa->cm) + 1;
+    cnfa->flags = 0;
+
+    ca = cnfa->arcs;
+    for (s = nfa->states; s != NULL; s = s->next) {
+	assert((size_t) s->no < nstates);
+	cnfa->states[s->no] = ca;
+	ca->co = 0;		/* clear and skip flags "arc" */
+	ca++;
+	first = ca;
+	for (a = s->outs; a != NULL; a = a->outchain) {
+	    switch (a->type) {
+	    case PLAIN:
+		ca->co = a->co;
+		ca->to = a->to->no;
 		ca++;
-		first = ca;
-		for (a = s->outs; a != NULL; a = a->outchain)
-			switch (a->type) {
-			case PLAIN:
-				ca->co = a->co;
-				ca->to = a->to->no;
-				ca++;
-				break;
-			case LACON:
-				assert(s->no != cnfa->pre);
-				ca->co = (color)(cnfa->ncolors + a->co);
-				ca->to = a->to->no;
-				ca++;
-				cnfa->flags |= HASLACONS;
-				break;
-			default:
-				assert(NOTREACHED);
-				break;
-			}
-		carcsort(first, ca-1);
-		ca->co = COLORLESS;
-		ca->to = 0;
+		break;
+	    case LACON:
+		assert(s->no != cnfa->pre);
+		ca->co = (color) (cnfa->ncolors + a->co);
+		ca->to = a->to->no;
 		ca++;
+		cnfa->flags |= HASLACONS;
+		break;
+	    default:
+		assert(NOTREACHED);
+		break;
+	    }
 	}
-	assert(ca == &cnfa->arcs[narcs]);
-	assert(cnfa->nstates != 0);
-
-	/* mark no-progress states */
-	for (a = nfa->pre->outs; a != NULL; a = a->outchain)
-		cnfa->states[a->to->no]->co = 1;
-	cnfa->states[nfa->pre->no]->co = 1;
+	carcsort(first, ca-1);
+	ca->co = COLORLESS;
+	ca->to = 0;
+	ca++;
+    }
+    assert(ca == &cnfa->arcs[narcs]);
+    assert(cnfa->nstates != 0);
+
+    /*
+     * Mark no-progress states.
+     */
+
+    for (a = nfa->pre->outs; a != NULL; a = a->outchain) {
+	cnfa->states[a->to->no]->co = 1;
+    }
+    cnfa->states[nfa->pre->no]->co = 1;
 }
-
+
 /*
  - carcsort - sort compacted-NFA arcs by color
  * Really dumb algorithm, but if the list is long enough for that to matter,
  * you're in real trouble anyway.
  ^ static VOID carcsort(struct carc *, struct carc *);
  */
-static VOID
-carcsort(first, last)
-struct carc *first;
-struct carc *last;
+static void
+carcsort(
+    struct carc *first,
+    struct carc *last)
 {
-	struct carc *p;
-	struct carc *q;
-	struct carc tmp;
-
-	if (last - first <= 1)
-		return;
-
-	for (p = first; p <= last; p++)
-		for (q = p; q <= last; q++)
-			if (p->co > q->co ||
-					(p->co == q->co && p->to > q->to)) {
-				assert(p != q);
-				tmp = *p;
-				*p = *q;
-				*q = tmp;
-			}
-}
+    struct carc *p;
+    struct carc *q;
+    struct carc tmp;
 
+    if (last - first <= 1) {
+	return;
+    }
+
+    for (p = first; p <= last; p++) {
+	for (q = p; q <= last; q++) {
+	    if (p->co > q->co || (p->co == q->co && p->to > q->to)) {
+		assert(p != q);
+		tmp = *p;
+		*p = *q;
+		*q = tmp;
+	    }
+	}
+    }
+}
+
 /*
  - freecnfa - free a compacted NFA
  ^ static VOID freecnfa(struct cnfa *);
  */
-static VOID
-freecnfa(cnfa)
-struct cnfa *cnfa;
+static void
+freecnfa(
+    struct cnfa *cnfa)
 {
-	assert(cnfa->nstates != 0);	/* not empty already */
-	cnfa->nstates = 0;
-	FREE(cnfa->states);
-	FREE(cnfa->arcs);
+    assert(cnfa->nstates != 0);	/* not empty already */
+    cnfa->nstates = 0;
+    FREE(cnfa->states);
+    FREE(cnfa->arcs);
 }
-
+
 /*
  - dumpnfa - dump an NFA in human-readable form
  ^ static VOID dumpnfa(struct nfa *, FILE *);
  */
-static VOID
-dumpnfa(nfa, f)
-struct nfa *nfa;
-FILE *f;
+static void
+dumpnfa(
+    struct nfa *nfa,
+    FILE *f)
 {
 #ifdef REG_DEBUG
-	struct state *s;
-
-	fprintf(f, "pre %d, post %d", nfa->pre->no, nfa->post->no);
-	if (nfa->bos[0] != COLORLESS)
-		fprintf(f, ", bos [%ld]", (long)nfa->bos[0]);
-	if (nfa->bos[1] != COLORLESS)
-		fprintf(f, ", bol [%ld]", (long)nfa->bos[1]);
-	if (nfa->eos[0] != COLORLESS)
-		fprintf(f, ", eos [%ld]", (long)nfa->eos[0]);
-	if (nfa->eos[1] != COLORLESS)
-		fprintf(f, ", eol [%ld]", (long)nfa->eos[1]);
-	fprintf(f, "\n");
-	for (s = nfa->states; s != NULL; s = s->next)
-		dumpstate(s, f);
-	if (nfa->parent == NULL)
-		dumpcolors(nfa->cm, f);
-	fflush(f);
+    struct state *s;
+
+    fprintf(f, "pre %d, post %d", nfa->pre->no, nfa->post->no);
+    if (nfa->bos[0] != COLORLESS) {
+	fprintf(f, ", bos [%ld]", (long) nfa->bos[0]);
+    }
+    if (nfa->bos[1] != COLORLESS) {
+	fprintf(f, ", bol [%ld]", (long) nfa->bos[1]);
+    }
+    if (nfa->eos[0] != COLORLESS) {
+	fprintf(f, ", eos [%ld]", (long) nfa->eos[0]);
+    }
+    if (nfa->eos[1] != COLORLESS) {
+	fprintf(f, ", eol [%ld]", (long) nfa->eos[1]);
+    }
+    fprintf(f, "\n");
+    for (s = nfa->states; s != NULL; s = s->next) {
+	dumpstate(s, f);
+    }
+    if (nfa->parent == NULL) {
+	dumpcolors(nfa->cm, f);
+    }
+    fflush(f);
 #endif
 }
-
+
 #ifdef REG_DEBUG		/* subordinates of dumpnfa */
 /*
  ^ #ifdef REG_DEBUG
@@ -1498,165 +1643,185 @@ FILE *f;
  - dumpstate - dump an NFA state in human-readable form
  ^ static VOID dumpstate(struct state *, FILE *);
  */
-static VOID
-dumpstate(s, f)
-struct state *s;
-FILE *f;
+static void
+dumpstate(
+    struct state *s,
+    FILE *f)
 {
-	struct arc *a;
-
-	fprintf(f, "%d%s%c", s->no, (s->tmp != NULL) ? "T" : "",
-					(s->flag) ? s->flag : '.');
-	if (s->prev != NULL && s->prev->next != s)
-		fprintf(f, "\tstate chain bad\n");
-	if (s->nouts == 0)
-		fprintf(f, "\tno out arcs\n");
-	else
-		dumparcs(s, f);
-	fflush(f);
-	for (a = s->ins; a != NULL; a = a->inchain) {
-		if (a->to != s)
-			fprintf(f, "\tlink from %d to %d on %d's in-chain\n",
-					a->from->no, a->to->no, s->no);
+    struct arc *a;
+
+    fprintf(f, "%d%s%c", s->no, (s->tmp != NULL) ? "T" : "",
+	    (s->flag) ? s->flag : '.');
+    if (s->prev != NULL && s->prev->next != s) {
+	fprintf(f, "\tstate chain bad\n");
+    }
+    if (s->nouts == 0) {
+	fprintf(f, "\tno out arcs\n");
+    } else {
+	dumparcs(s, f);
+    }
+    fflush(f);
+    for (a = s->ins; a != NULL; a = a->inchain) {
+	if (a->to != s) {
+	    fprintf(f, "\tlink from %d to %d on %d's in-chain\n",
+		    a->from->no, a->to->no, s->no);
 	}
+    }
 }
-
+
 /*
  - dumparcs - dump out-arcs in human-readable form
  ^ static VOID dumparcs(struct state *, FILE *);
  */
-static VOID
-dumparcs(s, f)
-struct state *s;
-FILE *f;
+static void
+dumparcs(
+    struct state *s,
+    FILE *f)
 {
-	int pos;
+    int pos;
 
-	assert(s->nouts > 0);
-	/* printing arcs in reverse order is usually clearer */
-	pos = dumprarcs(s->outs, s, f, 1);
-	if (pos != 1)
-		fprintf(f, "\n");
+    assert(s->nouts > 0);
+    /* printing arcs in reverse order is usually clearer */
+    pos = dumprarcs(s->outs, s, f, 1);
+    if (pos != 1) {
+	fprintf(f, "\n");
+    }
 }
-
+
 /*
  - dumprarcs - dump remaining outarcs, recursively, in reverse order
  ^ static int dumprarcs(struct arc *, struct state *, FILE *, int);
  */
 static int			/* resulting print position */
-dumprarcs(a, s, f, pos)
-struct arc *a;
-struct state *s;
-FILE *f;
-int pos;			/* initial print position */
+dumprarcs(
+    struct arc *a,
+    struct state *s,
+    FILE *f,
+    int pos)			/* initial print position */
 {
-	if (a->outchain != NULL)
-		pos = dumprarcs(a->outchain, s, f, pos);
-	dumparc(a, s, f);
-	if (pos == 5) {
-		fprintf(f, "\n");
-		pos = 1;
-	} else
-		pos++;
-	return pos;
+    if (a->outchain != NULL) {
+	pos = dumprarcs(a->outchain, s, f, pos);
+    }
+    dumparc(a, s, f);
+    if (pos == 5) {
+	fprintf(f, "\n");
+	pos = 1;
+    } else {
+	pos++;
+    }
+    return pos;
 }
-
+
 /*
  - dumparc - dump one outarc in readable form, including prefixing tab
  ^ static VOID dumparc(struct arc *, struct state *, FILE *);
  */
-static VOID
-dumparc(a, s, f)
-struct arc *a;
-struct state *s;
-FILE *f;
+static void
+dumparc(
+    struct arc *a,
+    struct state *s,
+    FILE *f)
 {
-	struct arc *aa;
-	struct arcbatch *ab;
-
-	fprintf(f, "\t");
-	switch (a->type) {
-	case PLAIN:
-		fprintf(f, "[%ld]", (long)a->co);
-		break;
-	case AHEAD:
-		fprintf(f, ">%ld>", (long)a->co);
-		break;
-	case BEHIND:
-		fprintf(f, "<%ld<", (long)a->co);
-		break;
-	case LACON:
-		fprintf(f, ":%ld:", (long)a->co);
-		break;
-	case '^':
-	case '$':
-		fprintf(f, "%c%d", a->type, (int)a->co);
-		break;
-	case EMPTY:
-		break;
-	default:
-		fprintf(f, "0x%x/0%lo", a->type, (long)a->co);
-		break;
+    struct arc *aa;
+    struct arcbatch *ab;
+
+    fprintf(f, "\t");
+    switch (a->type) {
+    case PLAIN:
+	fprintf(f, "[%ld]", (long) a->co);
+	break;
+    case AHEAD:
+	fprintf(f, ">%ld>", (long) a->co);
+	break;
+    case BEHIND:
+	fprintf(f, "<%ld<", (long) a->co);
+	break;
+    case LACON:
+	fprintf(f, ":%ld:", (long) a->co);
+	break;
+    case '^':
+    case '$':
+	fprintf(f, "%c%d", a->type, (int) a->co);
+	break;
+    case EMPTY:
+	break;
+    default:
+	fprintf(f, "0x%x/0%lo", a->type, (long) a->co);
+	break;
+    }
+    if (a->from != s) {
+	fprintf(f, "?%d?", a->from->no);
+    }
+    for (ab = &a->from->oas; ab != NULL; ab = ab->next) {
+	for (aa = &ab->a[0]; aa < &ab->a[ABSIZE]; aa++) {
+	    if (aa == a) {
+		break;		/* NOTE BREAK OUT */
+	    }
 	}
-	if (a->from != s)
-		fprintf(f, "?%d?", a->from->no);
-	for (ab = &a->from->oas; ab != NULL; ab = ab->next) {
-		for (aa = &ab->a[0]; aa < &ab->a[ABSIZE]; aa++)
-			if (aa == a)
-				break;		/* NOTE BREAK OUT */
-		if (aa < &ab->a[ABSIZE])	/* propagate break */
-				break;		/* NOTE BREAK OUT */
+	if (aa < &ab->a[ABSIZE]) {	/* propagate break */
+	    break;		/* NOTE BREAK OUT */
 	}
-	if (ab == NULL)
-		fprintf(f, "?!?");	/* not in allocated space */
-	fprintf(f, "->");
-	if (a->to == NULL) {
-		fprintf(f, "NULL");
-		return;
+    }
+    if (ab == NULL) {
+	fprintf(f, "?!?");	/* not in allocated space */
+    }
+    fprintf(f, "->");
+    if (a->to == NULL) {
+	fprintf(f, "NULL");
+	return;
+    }
+    fprintf(f, "%d", a->to->no);
+    for (aa = a->to->ins; aa != NULL; aa = aa->inchain) {
+	if (aa == a) {
+	    break;		/* NOTE BREAK OUT */
 	}
-	fprintf(f, "%d", a->to->no);
-	for (aa = a->to->ins; aa != NULL; aa = aa->inchain)
-		if (aa == a)
-			break;		/* NOTE BREAK OUT */
-	if (aa == NULL)
-		fprintf(f, "?!?");	/* missing from in-chain */
+    }
+    if (aa == NULL) {
+	fprintf(f, "?!?");	/* missing from in-chain */
+    }
 }
 
 /*
  ^ #endif
  */
 #endif				/* ifdef REG_DEBUG */
-
+
 /*
  - dumpcnfa - dump a compacted NFA in human-readable form
  ^ static VOID dumpcnfa(struct cnfa *, FILE *);
  */
-static VOID
-dumpcnfa(cnfa, f)
-struct cnfa *cnfa;
-FILE *f;
+static void
+dumpcnfa(
+    struct cnfa *cnfa,
+    FILE *f)
 {
 #ifdef REG_DEBUG
-	int st;
-
-	fprintf(f, "pre %d, post %d", cnfa->pre, cnfa->post);
-	if (cnfa->bos[0] != COLORLESS)
-		fprintf(f, ", bos [%ld]", (long)cnfa->bos[0]);
-	if (cnfa->bos[1] != COLORLESS)
-		fprintf(f, ", bol [%ld]", (long)cnfa->bos[1]);
-	if (cnfa->eos[0] != COLORLESS)
-		fprintf(f, ", eos [%ld]", (long)cnfa->eos[0]);
-	if (cnfa->eos[1] != COLORLESS)
-		fprintf(f, ", eol [%ld]", (long)cnfa->eos[1]);
-	if (cnfa->flags&HASLACONS)
-		fprintf(f, ", haslacons");
-	fprintf(f, "\n");
-	for (st = 0; st < cnfa->nstates; st++)
-		dumpcstate(st, cnfa->states[st], cnfa, f);
-	fflush(f);
+    int st;
+
+    fprintf(f, "pre %d, post %d", cnfa->pre, cnfa->post);
+    if (cnfa->bos[0] != COLORLESS) {
+	fprintf(f, ", bos [%ld]", (long) cnfa->bos[0]);
+    }
+    if (cnfa->bos[1] != COLORLESS) {
+	fprintf(f, ", bol [%ld]", (long) cnfa->bos[1]);
+    }
+    if (cnfa->eos[0] != COLORLESS) {
+	fprintf(f, ", eos [%ld]", (long) cnfa->eos[0]);
+    }
+    if (cnfa->eos[1] != COLORLESS) {
+	fprintf(f, ", eol [%ld]", (long) cnfa->eos[1]);
+    }
+    if (cnfa->flags&HASLACONS) {
+	fprintf(f, ", haslacons");
+    }
+    fprintf(f, "\n");
+    for (st = 0; st < cnfa->nstates; st++) {
+	dumpcstate(st, cnfa->states[st], cnfa, f);
+    }
+    fflush(f);
 #endif
 }
-
+
 #ifdef REG_DEBUG		/* subordinates of dumpcnfa */
 /*
  ^ #ifdef REG_DEBUG
@@ -1666,36 +1831,46 @@ FILE *f;
  - dumpcstate - dump a compacted-NFA state in human-readable form
  ^ static VOID dumpcstate(int, struct carc *, struct cnfa *, FILE *);
  */
-static VOID
-dumpcstate(st, ca, cnfa, f)
-int st;
-struct carc *ca;
-struct cnfa *cnfa;
-FILE *f;
+static void
+dumpcstate(
+    int st,
+    struct carc *ca,
+    struct cnfa *cnfa,
+    FILE *f)
 {
-	int i;
-	int pos;
-
-	fprintf(f, "%d%s", st, (ca[0].co) ? ":" : ".");
-	pos = 1;
-	for (i = 1; ca[i].co != COLORLESS; i++) {
-		if (ca[i].co < cnfa->ncolors)
-			fprintf(f, "\t[%ld]->%d", (long)ca[i].co, ca[i].to);
-		else
-			fprintf(f, "\t:%ld:->%d", (long)ca[i].co-cnfa->ncolors,
-								ca[i].to);
-		if (pos == 5) {
-			fprintf(f, "\n");
-			pos = 1;
-		} else
-			pos++;
+    int i;
+    int pos;
+
+    fprintf(f, "%d%s", st, (ca[0].co) ? ":" : ".");
+    pos = 1;
+    for (i = 1; ca[i].co != COLORLESS; i++) {
+	if (ca[i].co < cnfa->ncolors) {
+	    fprintf(f, "\t[%ld]->%d", (long) ca[i].co, ca[i].to);
+	} else {
+	    fprintf(f, "\t:%ld:->%d", (long) ca[i].co-cnfa->ncolors,ca[i].to);
 	}
-	if (i == 1 || pos != 1)
-		fprintf(f, "\n");
-	fflush(f);
+	if (pos == 5) {
+	    fprintf(f, "\n");
+	    pos = 1;
+	} else {
+	    pos++;
+	}
+    }
+    if (i == 1 || pos != 1) {
+	fprintf(f, "\n");
+    }
+    fflush(f);
 }
 
 /*
  ^ #endif
  */
 #endif				/* ifdef REG_DEBUG */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regcomp.c b/generic/regcomp.c
index 307877a..ca4fc01 100644
--- a/generic/regcomp.c
+++ b/generic/regcomp.c
@@ -2,11 +2,11 @@
  * re_*comp and friends - compile REs
  * This file #includes several others (see the bottom).
  *
- * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
+ * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
  *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
+ * Corporation, none of whom are responsible for the results. The author
  * thanks all of them.
  *
  * Redistribution and use in source and binary forms -- with or without
@@ -14,12 +14,12 @@
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
  *
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
  *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
@@ -38,198 +38,189 @@
 /* =====^!^===== begin forwards =====^!^===== */
 /* automatically gathered by fwd; do not hand-edit */
 /* === regcomp.c === */
-int compile _ANSI_ARGS_((regex_t *, CONST chr *, size_t, int));
-static VOID moresubs _ANSI_ARGS_((struct vars *, int));
-static int freev _ANSI_ARGS_((struct vars *, int));
-static VOID makesearch _ANSI_ARGS_((struct vars *, struct nfa *));
-static struct subre *parse _ANSI_ARGS_((struct vars *, int, int, struct state *, struct state *));
-static struct subre *parsebranch _ANSI_ARGS_((struct vars *, int, int, struct state *, struct state *, int));
-static VOID parseqatom _ANSI_ARGS_((struct vars *, int, int, struct state *, struct state *, struct subre *));
-static VOID nonword _ANSI_ARGS_((struct vars *, int, struct state *, struct state *));
-static VOID word _ANSI_ARGS_((struct vars *, int, struct state *, struct state *));
-static int scannum _ANSI_ARGS_((struct vars *));
-static VOID repeat _ANSI_ARGS_((struct vars *, struct state *, struct state *, int, int));
-static VOID bracket _ANSI_ARGS_((struct vars *, struct state *, struct state *));
-static VOID cbracket _ANSI_ARGS_((struct vars *, struct state *, struct state *));
-static VOID brackpart _ANSI_ARGS_((struct vars *, struct state *, struct state *));
-static CONST chr *scanplain _ANSI_ARGS_((struct vars *));
-static VOID onechr _ANSI_ARGS_((struct vars *, pchr, struct state *, struct state *));
-static VOID dovec _ANSI_ARGS_((struct vars *, struct cvec *, struct state *, struct state *));
-static celt nextleader _ANSI_ARGS_((struct vars *, pchr, pchr));
-static VOID wordchrs _ANSI_ARGS_((struct vars *));
-static struct subre *subre _ANSI_ARGS_((struct vars *, int, int, struct state *, struct state *));
-static VOID freesubre _ANSI_ARGS_((struct vars *, struct subre *));
-static VOID freesrnode _ANSI_ARGS_((struct vars *, struct subre *));
-static VOID optst _ANSI_ARGS_((struct vars *, struct subre *));
-static int numst _ANSI_ARGS_((struct subre *, int));
-static VOID markst _ANSI_ARGS_((struct subre *));
-static VOID cleanst _ANSI_ARGS_((struct vars *));
-static long nfatree _ANSI_ARGS_((struct vars *, struct subre *, FILE *));
-static long nfanode _ANSI_ARGS_((struct vars *, struct subre *, FILE *));
-static int newlacon _ANSI_ARGS_((struct vars *, struct state *, struct state *, int));
-static VOID freelacons _ANSI_ARGS_((struct subre *, int));
-static VOID rfree _ANSI_ARGS_((regex_t *));
-static VOID dump _ANSI_ARGS_((regex_t *, FILE *));
-static VOID dumpst _ANSI_ARGS_((struct subre *, FILE *, int));
-static VOID stdump _ANSI_ARGS_((struct subre *, FILE *, int));
-static char *stid _ANSI_ARGS_((struct subre *, char *, size_t));
+int compile(regex_t *, const chr *, size_t, int);
+static void moresubs(struct vars *, int);
+static int freev(struct vars *, int);
+static void makesearch(struct vars *, struct nfa *);
+static struct subre *parse(struct vars *, int, int, struct state *, struct state *);
+static struct subre *parsebranch(struct vars *, int, int, struct state *, struct state *, int);
+static void parseqatom(struct vars *, int, int, struct state *, struct state *, struct subre *);
+static void nonword(struct vars *, int, struct state *, struct state *);
+static void word(struct vars *, int, struct state *, struct state *);
+static int scannum(struct vars *);
+static void repeat(struct vars *, struct state *, struct state *, int, int);
+static void bracket(struct vars *, struct state *, struct state *);
+static void cbracket(struct vars *, struct state *, struct state *);
+static void brackpart(struct vars *, struct state *, struct state *);
+static const chr *scanplain(struct vars *);
+static void onechr(struct vars *, pchr, struct state *, struct state *);
+static void dovec(struct vars *, struct cvec *, struct state *, struct state *);
+static void wordchrs(struct vars *);
+static struct subre *subre(struct vars *, int, int, struct state *, struct state *);
+static void freesubre(struct vars *, struct subre *);
+static void freesrnode(struct vars *, struct subre *);
+static void optst(struct vars *, struct subre *);
+static int numst(struct subre *, int);
+static void markst(struct subre *);
+static void cleanst(struct vars *);
+static long nfatree(struct vars *, struct subre *, FILE *);
+static long nfanode(struct vars *, struct subre *, FILE *);
+static int newlacon(struct vars *, struct state *, struct state *, int);
+static void freelacons(struct subre *, int);
+static void rfree(regex_t *);
+static void dump(regex_t *, FILE *);
+static void dumpst(struct subre *, FILE *, int);
+static void stdump(struct subre *, FILE *, int);
+static const char *stid(struct subre *, char *, size_t);
 /* === regc_lex.c === */
-static VOID lexstart _ANSI_ARGS_((struct vars *));
-static VOID prefixes _ANSI_ARGS_((struct vars *));
-static VOID lexnest _ANSI_ARGS_((struct vars *, CONST chr *, CONST chr *));
-static VOID lexword _ANSI_ARGS_((struct vars *));
-static int next _ANSI_ARGS_((struct vars *));
-static int lexescape _ANSI_ARGS_((struct vars *));
-static chr lexdigits _ANSI_ARGS_((struct vars *, int, int, int));
-static int brenext _ANSI_ARGS_((struct vars *, pchr));
-static VOID skip _ANSI_ARGS_((struct vars *));
-static chr newline _ANSI_ARGS_((NOPARMS));
+static void lexstart(struct vars *);
+static void prefixes(struct vars *);
+static void lexnest(struct vars *, const chr *, const chr *);
+static void lexword(struct vars *);
+static int next(struct vars *);
+static int lexescape(struct vars *);
+static chr lexdigits(struct vars *, int, int, int);
+static int brenext(struct vars *, pchr);
+static void skip(struct vars *);
+static chr newline(NOPARMS);
 #ifdef REG_DEBUG
-static CONST chr *ch _ANSI_ARGS_((NOPARMS));
+static const chr *ch(NOPARMS);
 #endif
-static chr chrnamed _ANSI_ARGS_((struct vars *, CONST chr *, CONST chr *, pchr));
+static chr chrnamed(struct vars *, const chr *, const chr *, pchr);
 /* === regc_color.c === */
-static VOID initcm _ANSI_ARGS_((struct vars *, struct colormap *));
-static VOID freecm _ANSI_ARGS_((struct colormap *));
-static VOID cmtreefree _ANSI_ARGS_((struct colormap *, union tree *, int));
-static color setcolor _ANSI_ARGS_((struct colormap *, pchr, pcolor));
-static color maxcolor _ANSI_ARGS_((struct colormap *));
-static color newcolor _ANSI_ARGS_((struct colormap *));
-static VOID freecolor _ANSI_ARGS_((struct colormap *, pcolor));
-static color pseudocolor _ANSI_ARGS_((struct colormap *));
-static color subcolor _ANSI_ARGS_((struct colormap *, pchr c));
-static color newsub _ANSI_ARGS_((struct colormap *, pcolor));
-static VOID subrange _ANSI_ARGS_((struct vars *, pchr, pchr, struct state *, struct state *));
-static VOID subblock _ANSI_ARGS_((struct vars *, pchr, struct state *, struct state *));
-static VOID okcolors _ANSI_ARGS_((struct nfa *, struct colormap *));
-static VOID colorchain _ANSI_ARGS_((struct colormap *, struct arc *));
-static VOID uncolorchain _ANSI_ARGS_((struct colormap *, struct arc *));
-static int singleton _ANSI_ARGS_((struct colormap *, pchr c));
-static VOID rainbow _ANSI_ARGS_((struct nfa *, struct colormap *, int, pcolor, struct state *, struct state *));
-static VOID colorcomplement _ANSI_ARGS_((struct nfa *, struct colormap *, int, struct state *, struct state *, struct state *));
+static void initcm(struct vars *, struct colormap *);
+static void freecm(struct colormap *);
+static void cmtreefree(struct colormap *, union tree *, int);
+static color setcolor(struct colormap *, pchr, pcolor);
+static color maxcolor(struct colormap *);
+static color newcolor(struct colormap *);
+static void freecolor(struct colormap *, pcolor);
+static color pseudocolor(struct colormap *);
+static color subcolor(struct colormap *, pchr c);
+static color newsub(struct colormap *, pcolor);
+static void subrange(struct vars *, pchr, pchr, struct state *, struct state *);
+static void subblock(struct vars *, pchr, struct state *, struct state *);
+static void okcolors(struct nfa *, struct colormap *);
+static void colorchain(struct colormap *, struct arc *);
+static void uncolorchain(struct colormap *, struct arc *);
+static void rainbow(struct nfa *, struct colormap *, int, pcolor, struct state *, struct state *);
+static void colorcomplement(struct nfa *, struct colormap *, int, struct state *, struct state *, struct state *);
 #ifdef REG_DEBUG
-static VOID dumpcolors _ANSI_ARGS_((struct colormap *, FILE *));
-static VOID fillcheck _ANSI_ARGS_((struct colormap *, union tree *, int, FILE *));
-static VOID dumpchr _ANSI_ARGS_((pchr, FILE *));
+static void dumpcolors(struct colormap *, FILE *);
+static void fillcheck(struct colormap *, union tree *, int, FILE *);
+static void dumpchr(pchr, FILE *);
 #endif
 /* === regc_nfa.c === */
-static struct nfa *newnfa _ANSI_ARGS_((struct vars *, struct colormap *, struct nfa *));
-static VOID freenfa _ANSI_ARGS_((struct nfa *));
-static struct state *newstate _ANSI_ARGS_((struct nfa *));
-static struct state *newfstate _ANSI_ARGS_((struct nfa *, int flag));
-static VOID dropstate _ANSI_ARGS_((struct nfa *, struct state *));
-static VOID freestate _ANSI_ARGS_((struct nfa *, struct state *));
-static VOID destroystate _ANSI_ARGS_((struct nfa *, struct state *));
-static VOID newarc _ANSI_ARGS_((struct nfa *, int, pcolor, struct state *, struct state *));
-static struct arc *allocarc _ANSI_ARGS_((struct nfa *, struct state *));
-static VOID freearc _ANSI_ARGS_((struct nfa *, struct arc *));
-static struct arc *findarc _ANSI_ARGS_((struct state *, int, pcolor));
-static VOID cparc _ANSI_ARGS_((struct nfa *, struct arc *, struct state *, struct state *));
-static VOID moveins _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID copyins _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID moveouts _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID copyouts _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID cloneouts _ANSI_ARGS_((struct nfa *, struct state *, struct state *, struct state *, int));
-static VOID delsub _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID deltraverse _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID dupnfa _ANSI_ARGS_((struct nfa *, struct state *, struct state *, struct state *, struct state *));
-static VOID duptraverse _ANSI_ARGS_((struct nfa *, struct state *, struct state *));
-static VOID cleartraverse _ANSI_ARGS_((struct nfa *, struct state *));
-static VOID specialcolors _ANSI_ARGS_((struct nfa *));
-static long optimize _ANSI_ARGS_((struct nfa *, FILE *));
-static VOID pullback _ANSI_ARGS_((struct nfa *, FILE *));
-static int pull _ANSI_ARGS_((struct nfa *, struct arc *));
-static VOID pushfwd _ANSI_ARGS_((struct nfa *, FILE *));
-static int push _ANSI_ARGS_((struct nfa *, struct arc *));
+static struct nfa *newnfa(struct vars *, struct colormap *, struct nfa *);
+static void freenfa(struct nfa *);
+static struct state *newstate(struct nfa *);
+static struct state *newfstate(struct nfa *, int flag);
+static void dropstate(struct nfa *, struct state *);
+static void freestate(struct nfa *, struct state *);
+static void destroystate(struct nfa *, struct state *);
+static void newarc(struct nfa *, int, pcolor, struct state *, struct state *);
+static struct arc *allocarc(struct nfa *, struct state *);
+static void freearc(struct nfa *, struct arc *);
+static struct arc *findarc(struct state *, int, pcolor);
+static void cparc(struct nfa *, struct arc *, struct state *, struct state *);
+static void moveins(struct nfa *, struct state *, struct state *);
+static void copyins(struct nfa *, struct state *, struct state *);
+static void moveouts(struct nfa *, struct state *, struct state *);
+static void copyouts(struct nfa *, struct state *, struct state *);
+static void cloneouts(struct nfa *, struct state *, struct state *, struct state *, int);
+static void delsub(struct nfa *, struct state *, struct state *);
+static void deltraverse(struct nfa *, struct state *, struct state *);
+static void dupnfa(struct nfa *, struct state *, struct state *, struct state *, struct state *);
+static void duptraverse(struct nfa *, struct state *, struct state *);
+static void cleartraverse(struct nfa *, struct state *);
+static void specialcolors(struct nfa *);
+static long optimize(struct nfa *, FILE *);
+static void pullback(struct nfa *, FILE *);
+static int pull(struct nfa *, struct arc *);
+static void pushfwd(struct nfa *, FILE *);
+static int push(struct nfa *, struct arc *);
 #define	INCOMPATIBLE	1	/* destroys arc */
 #define	SATISFIED	2	/* constraint satisfied */
 #define	COMPATIBLE	3	/* compatible but not satisfied yet */
-static int combine _ANSI_ARGS_((struct arc *, struct arc *));
-static VOID fixempties _ANSI_ARGS_((struct nfa *, FILE *));
-static int unempty _ANSI_ARGS_((struct nfa *, struct arc *));
-static VOID cleanup _ANSI_ARGS_((struct nfa *));
-static VOID markreachable _ANSI_ARGS_((struct nfa *, struct state *, struct state *, struct state *));
-static VOID markcanreach _ANSI_ARGS_((struct nfa *, struct state *, struct state *, struct state *));
-static long analyze _ANSI_ARGS_((struct nfa *));
-static VOID compact _ANSI_ARGS_((struct nfa *, struct cnfa *));
-static VOID carcsort _ANSI_ARGS_((struct carc *, struct carc *));
-static VOID freecnfa _ANSI_ARGS_((struct cnfa *));
-static VOID dumpnfa _ANSI_ARGS_((struct nfa *, FILE *));
+static int combine(struct arc *, struct arc *);
+static void fixempties(struct nfa *, FILE *);
+static int unempty(struct nfa *, struct arc *);
+static void cleanup(struct nfa *);
+static void markreachable(struct nfa *, struct state *, struct state *, struct state *);
+static void markcanreach(struct nfa *, struct state *, struct state *, struct state *);
+static long analyze(struct nfa *);
+static void compact(struct nfa *, struct cnfa *);
+static void carcsort(struct carc *, struct carc *);
+static void freecnfa(struct cnfa *);
+static void dumpnfa(struct nfa *, FILE *);
 #ifdef REG_DEBUG
-static VOID dumpstate _ANSI_ARGS_((struct state *, FILE *));
-static VOID dumparcs _ANSI_ARGS_((struct state *, FILE *));
-static int dumprarcs _ANSI_ARGS_((struct arc *, struct state *, FILE *, int));
-static VOID dumparc _ANSI_ARGS_((struct arc *, struct state *, FILE *));
+static void dumpstate(struct state *, FILE *);
+static void dumparcs(struct state *, FILE *);
+static int dumprarcs(struct arc *, struct state *, FILE *, int);
+static void dumparc(struct arc *, struct state *, FILE *);
 #endif
-static VOID dumpcnfa _ANSI_ARGS_((struct cnfa *, FILE *));
+static void dumpcnfa(struct cnfa *, FILE *);
 #ifdef REG_DEBUG
-static VOID dumpcstate _ANSI_ARGS_((int, struct carc *, struct cnfa *, FILE *));
+static void dumpcstate(int, struct carc *, struct cnfa *, FILE *);
 #endif
 /* === regc_cvec.c === */
-static struct cvec *newcvec _ANSI_ARGS_((int, int, int));
-static struct cvec *clearcvec _ANSI_ARGS_((struct cvec *));
-static VOID addchr _ANSI_ARGS_((struct cvec *, pchr));
-static VOID addrange _ANSI_ARGS_((struct cvec *, pchr, pchr));
-static int haschr _ANSI_ARGS_((struct cvec *, pchr));
-static struct cvec *getcvec _ANSI_ARGS_((struct vars *, int, int));
-static VOID freecvec _ANSI_ARGS_((struct cvec *));
+static struct cvec *clearcvec(struct cvec *);
+static void addchr(struct cvec *, pchr);
+static void addrange(struct cvec *, pchr, pchr);
+static struct cvec *newcvec(int, int);
+static struct cvec *getcvec(struct vars *, int, int);
+static void freecvec(struct cvec *);
 /* === regc_locale.c === */
-static celt element _ANSI_ARGS_((struct vars *, CONST chr *, CONST chr *));
-static struct cvec *range _ANSI_ARGS_((struct vars *, celt, celt, int));
-static int before _ANSI_ARGS_((celt, celt));
-static struct cvec *eclass _ANSI_ARGS_((struct vars *, celt, int));
-static struct cvec *cclass _ANSI_ARGS_((struct vars *, CONST chr *, CONST chr *, int));
-static struct cvec *allcases _ANSI_ARGS_((struct vars *, pchr));
-static int cmp _ANSI_ARGS_((CONST chr *, CONST chr *, size_t));
-static int casecmp _ANSI_ARGS_((CONST chr *, CONST chr *, size_t));
+static celt element(struct vars *, const chr *, const chr *);
+static struct cvec *range(struct vars *, celt, celt, int);
+static int before(celt, celt);
+static struct cvec *eclass(struct vars *, celt, int);
+static struct cvec *cclass(struct vars *, const chr *, const chr *, int);
+static struct cvec *allcases(struct vars *, pchr);
+static int cmp(const chr *, const chr *, size_t);
+static int casecmp(const chr *, const chr *, size_t);
 /* automatically gathered by fwd; do not hand-edit */
 /* =====^!^===== end forwards =====^!^===== */
-
-
-
+
 /* internal variables, bundled for easy passing around */
 struct vars {
-	regex_t *re;
-	CONST chr *now;	/* scan pointer into string */
-	CONST chr *stop;		/* end of string */
-	CONST chr *savenow;		/* saved now and stop for "subroutine call" */
-	CONST chr *savestop;
-	int err;		/* error code (0 if none) */
-	int cflags;		/* copy of compile flags */
-	int lasttype;		/* type of previous token */
-	int nexttype;		/* type of next token */
-	chr nextvalue;		/* value (if any) of next token */
-	int lexcon;		/* lexical context type (see lex.c) */
-	int nsubexp;		/* subexpression count */
-	struct subre **subs;	/* subRE pointer vector */
-	size_t nsubs;		/* length of vector */
-	struct subre *sub10[10];	/* initial vector, enough for most */
-	struct nfa *nfa;	/* the NFA */
-	struct colormap *cm;	/* character color map */
-	color nlcolor;		/* color of newline */
-	struct state *wordchrs;	/* state in nfa holding word-char outarcs */
-	struct subre *tree;	/* subexpression tree */
-	struct subre *treechain;	/* all tree nodes allocated */
-	struct subre *treefree;		/* any free tree nodes */
-	int ntree;		/* number of tree nodes */
-	struct cvec *cv;	/* interface cvec */
-	struct cvec *cv2;	/* utility cvec */
-	struct cvec *mcces;	/* collating-element information */
-#		define	ISCELEADER(v,c)	(v->mcces != NULL && haschr(v->mcces, (c)))
-	struct state *mccepbegin;	/* in nfa, start of MCCE prototypes */
-	struct state *mccepend;	/* in nfa, end of MCCE prototypes */
-	struct subre *lacons;	/* lookahead-constraint vector */
-	int nlacons;		/* size of lacons */
+    regex_t *re;
+    const chr *now;		/* scan pointer into string */
+    const chr *stop;		/* end of string */
+    const chr *savenow;		/* saved now and stop for "subroutine call" */
+    const chr *savestop;
+    int err;			/* error code (0 if none) */
+    int cflags;			/* copy of compile flags */
+    int lasttype;		/* type of previous token */
+    int nexttype;		/* type of next token */
+    chr nextvalue;		/* value (if any) of next token */
+    int lexcon;			/* lexical context type (see lex.c) */
+    int nsubexp;		/* subexpression count */
+    struct subre **subs;	/* subRE pointer vector */
+    size_t nsubs;		/* length of vector */
+    struct subre *sub10[10];	/* initial vector, enough for most */
+    struct nfa *nfa;		/* the NFA */
+    struct colormap *cm;	/* character color map */
+    color nlcolor;		/* color of newline */
+    struct state *wordchrs;	/* state in nfa holding word-char outarcs */
+    struct subre *tree;		/* subexpression tree */
+    struct subre *treechain;	/* all tree nodes allocated */
+    struct subre *treefree;	/* any free tree nodes */
+    int ntree;			/* number of tree nodes */
+    struct cvec *cv;		/* interface cvec */
+    struct cvec *cv2;		/* utility cvec */
+    struct subre *lacons;	/* lookahead-constraint vector */
+    int nlacons;		/* size of lacons */
 };
 
 /* parsing macros; most know that `v' is the struct vars pointer */
 #define	NEXT()	(next(v))		/* advance by one token */
 #define	SEE(t)	(v->nexttype == (t))	/* is next token this? */
 #define	EAT(t)	(SEE(t) && next(v))	/* if next is this, swallow it */
-#define	VISERR(vv)	((vv)->err != 0)	/* have we seen an error yet? */
+#define	VISERR(vv)	((vv)->err != 0)/* have we seen an error yet? */
 #define	ISERR()	VISERR(v)
-#define	VERR(vv,e)	((vv)->nexttype = EOS, ((vv)->err) ? (vv)->err :\
-							((vv)->err = (e)))
+#define	VERR(vv,e) \
+	((vv)->nexttype = EOS, ((vv)->err) ? (vv)->err : ((vv)->err = (e)))
 #define	ERR(e)	VERR(v, e)		/* record an error */
 #define	NOERR()	{if (ISERR()) return;}	/* if error seen, return */
 #define	NOERRN()	{if (ISERR()) return NULL;}	/* NOERR with retval */
@@ -259,387 +250,459 @@ struct vars {
 #define	PREFER	'P'		/* length preference */
 
 /* is an arc colored, and hence on a color chain? */
-#define	COLORED(a)	((a)->type == PLAIN || (a)->type == AHEAD || \
-							(a)->type == BEHIND)
-
-
+#define	COLORED(a) \
+	((a)->type == PLAIN || (a)->type == AHEAD || (a)->type == BEHIND)
 
 /* static function list */
 static struct fns functions = {
-	rfree,			/* regfree insides */
+    rfree,			/* regfree insides */
 };
-
-
-
+
 /*
  - compile - compile regular expression
- ^ int compile(regex_t *, CONST chr *, size_t, int);
+ ^ int compile(regex_t *, const chr *, size_t, int);
  */
 int
-compile(re, string, len, flags)
-regex_t *re;
-CONST chr *string;
-size_t len;
-int flags;
+compile(
+    regex_t *re,
+    const chr *string,
+    size_t len,
+    int flags)
 {
-	struct vars var;
-	struct vars *v = &var;
-	struct guts *g;
-	int i;
-	size_t j;
-	FILE *debug = (flags&REG_PROGRESS) ? stdout : (FILE *)NULL;
-#	define	CNOERR()	{ if (ISERR()) return freev(v, v->err); }
-
-	/* sanity checks */
-
-	if (re == NULL || string == NULL)
-		return REG_INVARG;
-	if ((flags&REG_QUOTE) &&
-			(flags&(REG_ADVANCED|REG_EXPANDED|REG_NEWLINE)))
-		return REG_INVARG;
-	if (!(flags&REG_EXTENDED) && (flags&REG_ADVF))
-		return REG_INVARG;
-
-	/* initial setup (after which freev() is callable) */
-	v->re = re;
-	v->now = (chr *)string;
-	v->stop = v->now + len;
-	v->savenow = v->savestop = NULL;
-	v->err = 0;
-	v->cflags = flags;
-	v->nsubexp = 0;
-	v->subs = v->sub10;
-	v->nsubs = 10;
-	for (j = 0; j < v->nsubs; j++)
-		v->subs[j] = NULL;
-	v->nfa = NULL;
-	v->cm = NULL;
-	v->nlcolor = COLORLESS;
-	v->wordchrs = NULL;
-	v->tree = NULL;
-	v->treechain = NULL;
-	v->treefree = NULL;
-	v->cv = NULL;
-	v->cv2 = NULL;
-	v->mcces = NULL;
-	v->lacons = NULL;
-	v->nlacons = 0;
-	re->re_magic = REMAGIC;
-	re->re_info = 0;		/* bits get set during parse */
-	re->re_csize = sizeof(chr);
-	re->re_guts = NULL;
-	re->re_fns = VS(&functions);
-
-	/* more complex setup, malloced things */
-	re->re_guts = VS(MALLOC(sizeof(struct guts)));
-	if (re->re_guts == NULL)
-		return freev(v, REG_ESPACE);
-	g = (struct guts *)re->re_guts;
-	g->tree = NULL;
-	initcm(v, &g->cmap);
-	v->cm = &g->cmap;
-	g->lacons = NULL;
-	g->nlacons = 0;
-	ZAPCNFA(g->search);
-	v->nfa = newnfa(v, v->cm, (struct nfa *)NULL);
-	CNOERR();
-	v->cv = newcvec(100, 20, 10);
-	if (v->cv == NULL)
-		return freev(v, REG_ESPACE);
-	CNOERR();
-
-	/* parsing */
-	lexstart(v);			/* also handles prefixes */
-	if ((v->cflags&REG_NLSTOP) || (v->cflags&REG_NLANCH)) {
-		/* assign newline a unique color */
-		v->nlcolor = subcolor(v->cm, newline());
-		okcolors(v->nfa, v->cm);
-	}
-	CNOERR();
-	v->tree = parse(v, EOS, PLAIN, v->nfa->init, v->nfa->final);
-	assert(SEE(EOS));		/* even if error; ISERR() => SEE(EOS) */
-	CNOERR();
-	assert(v->tree != NULL);
-
-	/* finish setup of nfa and its subre tree */
-	specialcolors(v->nfa);
-	CNOERR();
-	if (debug != NULL) {
-		fprintf(debug, "\n\n\n========= RAW ==========\n");
-		dumpnfa(v->nfa, debug);
-		dumpst(v->tree, debug, 1);
-	}
-	optst(v, v->tree);
-	v->ntree = numst(v->tree, 1);
-	markst(v->tree);
-	cleanst(v);
+    AllocVars(v);
+    struct guts *g;
+    int i;
+    size_t j;
+    FILE *debug = (flags&REG_PROGRESS) ? stdout : NULL;
+#define	CNOERR()	{ if (ISERR()) return freev(v, v->err); }
+
+    /*
+     * Sanity checks.
+     */
+
+    if (re == NULL || string == NULL) {
+	FreeVars(v);
+	return REG_INVARG;
+    }
+    if ((flags&REG_QUOTE) && (flags&(REG_ADVANCED|REG_EXPANDED|REG_NEWLINE))) {
+	FreeVars(v);
+	return REG_INVARG;
+    }
+    if (!(flags&REG_EXTENDED) && (flags&REG_ADVF)) {
+	FreeVars(v);
+	return REG_INVARG;
+    }
+
+    /*
+     * Initial setup (after which freev() is callable).
+     */
+
+    v->re = re;
+    v->now = string;
+    v->stop = v->now + len;
+    v->savenow = v->savestop = NULL;
+    v->err = 0;
+    v->cflags = flags;
+    v->nsubexp = 0;
+    v->subs = v->sub10;
+    v->nsubs = 10;
+    for (j = 0; j < v->nsubs; j++) {
+	v->subs[j] = NULL;
+    }
+    v->nfa = NULL;
+    v->cm = NULL;
+    v->nlcolor = COLORLESS;
+    v->wordchrs = NULL;
+    v->tree = NULL;
+    v->treechain = NULL;
+    v->treefree = NULL;
+    v->cv = NULL;
+    v->cv2 = NULL;
+    v->lacons = NULL;
+    v->nlacons = 0;
+    re->re_magic = REMAGIC;
+    re->re_info = 0;		/* bits get set during parse */
+    re->re_csize = sizeof(chr);
+    re->re_guts = NULL;
+    re->re_fns = VS(&functions);
+
+    /*
+     * More complex setup, malloced things.
+     */
+
+    re->re_guts = VS(MALLOC(sizeof(struct guts)));
+    if (re->re_guts == NULL) {
+	return freev(v, REG_ESPACE);
+    }
+    g = (struct guts *) re->re_guts;
+    g->tree = NULL;
+    initcm(v, &g->cmap);
+    v->cm = &g->cmap;
+    g->lacons = NULL;
+    g->nlacons = 0;
+    ZAPCNFA(g->search);
+    v->nfa = newnfa(v, v->cm, NULL);
+    CNOERR();
+    v->cv = newcvec(100, 20);
+    if (v->cv == NULL) {
+	return freev(v, REG_ESPACE);
+    }
+
+    /*
+     * Parsing.
+     */
+
+    lexstart(v);		/* also handles prefixes */
+    if ((v->cflags&REG_NLSTOP) || (v->cflags&REG_NLANCH)) {
+	/*
+	 * Assign newline a unique color.
+	 */
+
+	v->nlcolor = subcolor(v->cm, newline());
+	okcolors(v->nfa, v->cm);
+    }
+    CNOERR();
+    v->tree = parse(v, EOS, PLAIN, v->nfa->init, v->nfa->final);
+    assert(SEE(EOS));		/* even if error; ISERR() => SEE(EOS) */
+    CNOERR();
+    assert(v->tree != NULL);
+
+    /*
+     * Finish setup of nfa and its subre tree.
+     */
+
+    specialcolors(v->nfa);
+    CNOERR();
+    if (debug != NULL) {
+	fprintf(debug, "\n\n\n========= RAW ==========\n");
+	dumpnfa(v->nfa, debug);
+	dumpst(v->tree, debug, 1);
+    }
+    optst(v, v->tree);
+    v->ntree = numst(v->tree, 1);
+    markst(v->tree);
+    cleanst(v);
+    if (debug != NULL) {
+	fprintf(debug, "\n\n\n========= TREE FIXED ==========\n");
+	dumpst(v->tree, debug, 1);
+    }
+
+    /*
+     * Build compacted NFAs for tree and lacons.
+     */
+
+    re->re_info |= nfatree(v, v->tree, debug);
+    CNOERR();
+    assert(v->nlacons == 0 || v->lacons != NULL);
+    for (i = 1; i < v->nlacons; i++) {
 	if (debug != NULL) {
-		fprintf(debug, "\n\n\n========= TREE FIXED ==========\n");
-		dumpst(v->tree, debug, 1);
+	    fprintf(debug, "\n\n\n========= LA%d ==========\n", i);
 	}
+	nfanode(v, &v->lacons[i], debug);
+    }
+    CNOERR();
+    if (v->tree->flags&SHORTER) {
+	NOTE(REG_USHORTEST);
+    }
 
-	/* build compacted NFAs for tree and lacons */
-	re->re_info |= nfatree(v, v->tree, debug);
-	CNOERR();
-	assert(v->nlacons == 0 || v->lacons != NULL);
-	for (i = 1; i < v->nlacons; i++) {
-		if (debug != NULL)
-			fprintf(debug, "\n\n\n========= LA%d ==========\n", i);
-		nfanode(v, &v->lacons[i], debug);
-	}
-	CNOERR();
-	if (v->tree->flags&SHORTER)
-		NOTE(REG_USHORTEST);
-
-	/* build compacted NFAs for tree, lacons, fast search */
-	if (debug != NULL)
-		fprintf(debug, "\n\n\n========= SEARCH ==========\n");
-	/* can sacrifice main NFA now, so use it as work area */
-	(DISCARD)optimize(v->nfa, debug);
-	CNOERR();
-	makesearch(v, v->nfa);
-	CNOERR();
-	compact(v->nfa, &g->search);
-	CNOERR();
-
-	/* looks okay, package it up */
-	re->re_nsub = v->nsubexp;
-	v->re = NULL;			/* freev no longer frees re */
-	g->magic = GUTSMAGIC;
-	g->cflags = v->cflags;
-	g->info = re->re_info;
-	g->nsub = re->re_nsub;
-	g->tree = v->tree;
-	v->tree = NULL;
-	g->ntree = v->ntree;
-	g->compare = (v->cflags&REG_ICASE) ? casecmp : cmp;
-	g->lacons = v->lacons;
-	v->lacons = NULL;
-	g->nlacons = v->nlacons;
-
-	if (flags&REG_DUMP)
-		dump(re, stdout);
-
-	assert(v->err == 0);
-	return freev(v, 0);
-}
+    /*
+     * Build compacted NFAs for tree, lacons, fast search.
+     */
 
+    if (debug != NULL) {
+	fprintf(debug, "\n\n\n========= SEARCH ==========\n");
+    }
+
+    /*
+     * Can sacrifice main NFA now, so use it as work area.
+     */
+
+    (DISCARD) optimize(v->nfa, debug);
+    CNOERR();
+    makesearch(v, v->nfa);
+    CNOERR();
+    compact(v->nfa, &g->search);
+    CNOERR();
+
+    /*
+     * Looks okay, package it up.
+     */
+
+    re->re_nsub = v->nsubexp;
+    v->re = NULL;		/* freev no longer frees re */
+    g->magic = GUTSMAGIC;
+    g->cflags = v->cflags;
+    g->info = re->re_info;
+    g->nsub = re->re_nsub;
+    g->tree = v->tree;
+    v->tree = NULL;
+    g->ntree = v->ntree;
+    g->compare = (v->cflags&REG_ICASE) ? casecmp : cmp;
+    g->lacons = v->lacons;
+    v->lacons = NULL;
+    g->nlacons = v->nlacons;
+
+    if (flags&REG_DUMP) {
+	dump(re, stdout);
+    }
+
+    assert(v->err == 0);
+    return freev(v, 0);
+}
+
 /*
  - moresubs - enlarge subRE vector
- ^ static VOID moresubs(struct vars *, int);
+ ^ static void moresubs(struct vars *, int);
  */
-static VOID
-moresubs(v, wanted)
-struct vars *v;
-int wanted;			/* want enough room for this one */
+static void
+moresubs(
+    struct vars *v,
+    int wanted)			/* want enough room for this one */
 {
-	struct subre **p;
-	size_t n;
-
-	assert(wanted > 0 && (size_t)wanted >= v->nsubs);
-	n = (size_t)wanted * 3 / 2 + 1;
-	if (v->subs == v->sub10) {
-		p = (struct subre **)MALLOC(n * sizeof(struct subre *));
-		if (p != NULL)
-			memcpy(VS(p), VS(v->subs),
-					v->nsubs * sizeof(struct subre *));
-	} else
-		p = (struct subre **)REALLOC(v->subs, n*sizeof(struct subre *));
-	if (p == NULL) {
-		ERR(REG_ESPACE);
-		return;
+    struct subre **p;
+    size_t n;
+
+    assert(wanted > 0 && (size_t)wanted >= v->nsubs);
+    n = (size_t)wanted * 3 / 2 + 1;
+    if (v->subs == v->sub10) {
+	p = (struct subre **) MALLOC(n * sizeof(struct subre *));
+	if (p != NULL) {
+	    memcpy(p, v->subs, v->nsubs * sizeof(struct subre *));
 	}
-	v->subs = p;
-	for (p = &v->subs[v->nsubs]; v->nsubs < n; p++, v->nsubs++)
-		*p = NULL;
-	assert(v->nsubs == n);
-	assert((size_t)wanted < v->nsubs);
+    } else {
+	p = (struct subre **) REALLOC(v->subs, n*sizeof(struct subre *));
+    }
+    if (p == NULL) {
+	ERR(REG_ESPACE);
+	return;
+    }
+
+    v->subs = p;
+    for (p = &v->subs[v->nsubs]; v->nsubs < n; p++, v->nsubs++) {
+	*p = NULL;
+    }
+    assert(v->nsubs == n);
+    assert((size_t)wanted < v->nsubs);
 }
-
+
 /*
  - freev - free vars struct's substructures where necessary
- * Optionally does error-number setting, and always returns error code
- * (if any), to make error-handling code terser.
+ * Optionally does error-number setting, and always returns error code (if
+ * any), to make error-handling code terser.
  ^ static int freev(struct vars *, int);
  */
 static int
-freev(v, err)
-struct vars *v;
-int err;
+freev(
+    struct vars *v,
+    int err)
 {
-	if (v->re != NULL)
-		rfree(v->re);
-	if (v->subs != v->sub10)
-		FREE(v->subs);
-	if (v->nfa != NULL)
-		freenfa(v->nfa);
-	if (v->tree != NULL)
-		freesubre(v, v->tree);
-	if (v->treechain != NULL)
-		cleanst(v);
-	if (v->cv != NULL)
-		freecvec(v->cv);
-	if (v->cv2 != NULL)
-		freecvec(v->cv2);
-	if (v->mcces != NULL)
-		freecvec(v->mcces);
-	if (v->lacons != NULL)
-		freelacons(v->lacons, v->nlacons);
-	ERR(err);			/* nop if err==0 */
-
-	return v->err;
+    register int ret;
+
+    if (v->re != NULL) {
+	rfree(v->re);
+    }
+    if (v->subs != v->sub10) {
+	FREE(v->subs);
+    }
+    if (v->nfa != NULL) {
+	freenfa(v->nfa);
+    }
+    if (v->tree != NULL) {
+	freesubre(v, v->tree);
+    }
+    if (v->treechain != NULL) {
+	cleanst(v);
+    }
+    if (v->cv != NULL) {
+	freecvec(v->cv);
+    }
+    if (v->cv2 != NULL) {
+	freecvec(v->cv2);
+    }
+    if (v->lacons != NULL) {
+	freelacons(v->lacons, v->nlacons);
+    }
+    ERR(err);			/* nop if err==0 */
+
+    ret = v->err;
+    FreeVars(v);
+    return ret;
 }
-
+
 /*
  - makesearch - turn an NFA into a search NFA (implicit prepend of .*?)
  * NFA must have been optimize()d already.
- ^ static VOID makesearch(struct vars *, struct nfa *);
+ ^ static void makesearch(struct vars *, struct nfa *);
  */
-static VOID
-makesearch(v, nfa)
-struct vars *v;
-struct nfa *nfa;
+static void
+makesearch(
+    struct vars *v,
+    struct nfa *nfa)
 {
-	struct arc *a;
-	struct arc *b;
-	struct state *pre = nfa->pre;
-	struct state *s;
-	struct state *s2;
-	struct state *slist;
-
-	/* no loops are needed if it's anchored */
-	for (a = pre->outs; a != NULL; a = a->outchain) {
-		assert(a->type == PLAIN);
-		if (a->co != nfa->bos[0] && a->co != nfa->bos[1])
-			break;
-	}
-	if (a != NULL) {
-		/* add implicit .* in front */
-		rainbow(nfa, v->cm, PLAIN, COLORLESS, pre, pre);
+    struct arc *a, *b;
+    struct state *pre = nfa->pre;
+    struct state *s, *s2, *slist;
 
-		/* and ^* and \A* too -- not always necessary, but harmless */
-		newarc(nfa, PLAIN, nfa->bos[0], pre, pre);
-		newarc(nfa, PLAIN, nfa->bos[1], pre, pre);
+    /*
+     * No loops are needed if it's anchored.
+     */
+
+    for (a = pre->outs; a != NULL; a = a->outchain) {
+	assert(a->type == PLAIN);
+	if (a->co != nfa->bos[0] && a->co != nfa->bos[1]) {
+	    break;
 	}
+    }
+    if (a != NULL) {
+	/*
+	 * Add implicit .* in front.
+	 */
+
+	rainbow(nfa, v->cm, PLAIN, COLORLESS, pre, pre);
 
 	/*
-	 * Now here's the subtle part.  Because many REs have no lookback
-	 * constraints, often knowing when you were in the pre state tells
-	 * you little; it's the next state(s) that are informative.  But
-	 * some of them may have other inarcs, i.e. it may be possible to
-	 * make actual progress and then return to one of them.  We must
-	 * de-optimize such cases, splitting each such state into progress
-	 * and no-progress states.
+	 * And ^* and \A* too -- not always necessary, but harmless.
 	 */
 
-	/* first, make a list of the states */
-	slist = NULL;
-	for (a = pre->outs; a != NULL; a = a->outchain) {
-		s = a->to;
-		for (b = s->ins; b != NULL; b = b->inchain)
-			if (b->from != pre)
-				break;
-		if (b != NULL) {		/* must be split */
-			if (s->tmp == NULL) {  /* if not already in the list */
-			                       /* (fixes bugs 505048, 230589, */
-			                       /* 840258, 504785) */
-				s->tmp = slist;
-				slist = s;
-			}
-		}
+	newarc(nfa, PLAIN, nfa->bos[0], pre, pre);
+	newarc(nfa, PLAIN, nfa->bos[1], pre, pre);
+    }
+
+    /*
+     * Now here's the subtle part. Because many REs have no lookback
+     * constraints, often knowing when you were in the pre state tells you
+     * little; it's the next state(s) that are informative. But some of them
+     * may have other inarcs, i.e. it may be possible to make actual progress
+     * and then return to one of them. We must de-optimize such cases,
+     * splitting each such state into progress and no-progress states.
+     */
+
+    /*
+     * First, make a list of the states.
+     */
+
+    slist = NULL;
+    for (a=pre->outs ; a!=NULL ; a=a->outchain) {
+	s = a->to;
+	for (b=s->ins ; b!=NULL ; b=b->inchain) {
+	    if (b->from != pre) {
+		break;
+	    }
+	}
+	if (b != NULL && s->tmp == NULL) {
+	    /*
+	     * Must be split if not already in the list (fixes bugs 505048,
+	     * 230589, 840258, 504785).
+	     */
+
+	    s->tmp = slist;
+	    slist = s;
 	}
+    }
 
-	/* do the splits */
-	for (s = slist; s != NULL; s = s2) {
-		s2 = newstate(nfa);
-		copyouts(nfa, s, s2);
-		for (a = s->ins; a != NULL; a = b) {
-			b = a->inchain;
-			if (a->from != pre) {
-				cparc(nfa, a, a->from, s2);
-				freearc(nfa, a);
-			}
-		}
-		s2 = s->tmp;
-		s->tmp = NULL;		/* clean up while we're at it */
+    /*
+     * Do the splits.
+     */
+
+    for (s=slist ; s!=NULL ; s=s2) {
+	s2 = newstate(nfa);
+
+	copyouts(nfa, s, s2);
+	for (a=s->ins ; a!=NULL ; a=b) {
+	    b = a->inchain;
+
+	    if (a->from != pre) {
+		cparc(nfa, a, a->from, s2);
+		freearc(nfa, a);
+	    }
 	}
+	s2 = s->tmp;
+	s->tmp = NULL;		/* clean up while we're at it */
+    }
 }
-
+
 /*
  - parse - parse an RE
- * This is actually just the top level, which parses a bunch of branches
- * tied together with '|'.  They appear in the tree as the left children
- * of a chain of '|' subres.
+ * This is actually just the top level, which parses a bunch of branches tied
+ * together with '|'. They appear in the tree as the left children of a chain
+ * of '|' subres.
  ^ static struct subre *parse(struct vars *, int, int, struct state *,
  ^ 	struct state *);
  */
 static struct subre *
-parse(v, stopper, type, init, final)
-struct vars *v;
-int stopper;			/* EOS or ')' */
-int type;			/* LACON (lookahead subRE) or PLAIN */
-struct state *init;		/* initial state */
-struct state *final;		/* final state */
+parse(
+    struct vars *v,
+    int stopper,		/* EOS or ')' */
+    int type,			/* LACON (lookahead subRE) or PLAIN */
+    struct state *init,		/* initial state */
+    struct state *final)	/* final state */
 {
-	struct state *left;	/* scaffolding for branch */
-	struct state *right;
-	struct subre *branches;	/* top level */
-	struct subre *branch;	/* current branch */
-	struct subre *t;	/* temporary */
-	int firstbranch;	/* is this the first branch? */
-
-	assert(stopper == ')' || stopper == EOS);
-
-	branches = subre(v, '|', LONGER, init, final);
+    struct state *left, *right;	/* scaffolding for branch */
+    struct subre *branches;	/* top level */
+    struct subre *branch;	/* current branch */
+    struct subre *t;		/* temporary */
+    int firstbranch;		/* is this the first branch? */
+
+    assert(stopper == ')' || stopper == EOS);
+
+    branches = subre(v, '|', LONGER, init, final);
+    NOERRN();
+    branch = branches;
+    firstbranch = 1;
+    do {	/* a branch */
+	if (!firstbranch) {
+	    /*
+	     * Need a place to hang the branch.
+	     */
+
+	    branch->right = subre(v, '|', LONGER, init, final);
+	    NOERRN();
+	    branch = branch->right;
+	}
+	firstbranch = 0;
+	left = newstate(v->nfa);
+	right = newstate(v->nfa);
 	NOERRN();
-	branch = branches;
-	firstbranch = 1;
-	do {	/* a branch */
-		if (!firstbranch) {
-			/* need a place to hang it */
-			branch->right = subre(v, '|', LONGER, init, final);
-			NOERRN();
-			branch = branch->right;
-		}
-		firstbranch = 0;
-		left = newstate(v->nfa);
-		right = newstate(v->nfa);
-		NOERRN();
-		EMPTYARC(init, left);
-		EMPTYARC(right, final);
-		NOERRN();
-		branch->left = parsebranch(v, stopper, type, left, right, 0);
-		NOERRN();
-		branch->flags |= UP(branch->flags | branch->left->flags);
-		if ((branch->flags &~ branches->flags) != 0)	/* new flags */
-			for (t = branches; t != branch; t = t->right)
-				t->flags |= branch->flags;
-	} while (EAT('|'));
-	assert(SEE(stopper) || SEE(EOS));
-
-	if (!SEE(stopper)) {
-		assert(stopper == ')' && SEE(EOS));
-		ERR(REG_EPAREN);
+	EMPTYARC(init, left);
+	EMPTYARC(right, final);
+	NOERRN();
+	branch->left = parsebranch(v, stopper, type, left, right, 0);
+	NOERRN();
+	branch->flags |= UP(branch->flags | branch->left->flags);
+	if ((branch->flags &~ branches->flags) != 0) {	/* new flags */
+	    for (t = branches; t != branch; t = t->right) {
+		t->flags |= branch->flags;
+	    }
 	}
+    } while (EAT('|'));
+    assert(SEE(stopper) || SEE(EOS));
 
-	/* optimize out simple cases */
-	if (branch == branches) {	/* only one branch */
-		assert(branch->right == NULL);
-		t = branch->left;
-		branch->left = NULL;
-		freesubre(v, branches);
-		branches = t;
-	} else if (!MESSY(branches->flags)) {	/* no interesting innards */
-		freesubre(v, branches->left);
-		branches->left = NULL;
-		freesubre(v, branches->right);
-		branches->right = NULL;
-		branches->op = '=';
-	}
+    if (!SEE(stopper)) {
+	assert(stopper == ')' && SEE(EOS));
+	ERR(REG_EPAREN);
+    }
 
-	return branches;
-}
+    /*
+     * Optimize out simple cases.
+     */
 
+    if (branch == branches) {	/* only one branch */
+	assert(branch->right == NULL);
+	t = branch->left;
+	branch->left = NULL;
+	freesubre(v, branches);
+	branches = t;
+    } else if (!MESSY(branches->flags)) {	/* no interesting innards */
+	freesubre(v, branches->left);
+	branches->left = NULL;
+	freesubre(v, branches->right);
+	branches->right = NULL;
+	branches->op = '=';
+    }
+
+    return branches;
+}
+
 /*
  - parsebranch - parse one branch of an RE
  * This mostly manages concatenation, working closely with parseqatom().
@@ -649,1460 +712,1448 @@ struct state *final;		/* final state */
  ^ 	struct state *, int);
  */
 static struct subre *
-parsebranch(v, stopper, type, left, right, partial)
-struct vars *v;
-int stopper;			/* EOS or ')' */
-int type;			/* LACON (lookahead subRE) or PLAIN */
-struct state *left;		/* leftmost state */
-struct state *right;		/* rightmost state */
-int partial;			/* is this only part of a branch? */
+parsebranch(
+    struct vars *v,
+    int stopper,		/* EOS or ')' */
+    int type,			/* LACON (lookahead subRE) or PLAIN */
+    struct state *left,		/* leftmost state */
+    struct state *right,	/* rightmost state */
+    int partial)		/* is this only part of a branch? */
 {
-	struct state *lp;	/* left end of current construct */
-	int seencontent;	/* is there anything in this branch yet? */
-	struct subre *t;
+    struct state *lp;		/* left end of current construct */
+    int seencontent;		/* is there anything in this branch yet? */
+    struct subre *t;
+
+    lp = left;
+    seencontent = 0;
+    t = subre(v, '=', 0, left, right);	/* op '=' is tentative */
+    NOERRN();
+    while (!SEE('|') && !SEE(stopper) && !SEE(EOS)) {
+	if (seencontent) {	/* implicit concat operator */
+	    lp = newstate(v->nfa);
+	    NOERRN();
+	    moveins(v->nfa, right, lp);
+	}
+	seencontent = 1;
 
-	lp = left;
-	seencontent = 0;
-	t = subre(v, '=', 0, left, right);	/* op '=' is tentative */
+	/* NB, recursion in parseqatom() may swallow rest of branch */
+	parseqatom(v, stopper, type, lp, right, t);
 	NOERRN();
-	while (!SEE('|') && !SEE(stopper) && !SEE(EOS)) {
-		if (seencontent) {	/* implicit concat operator */
-			lp = newstate(v->nfa);
-			NOERRN();
-			moveins(v->nfa, right, lp);
-		}
-		seencontent = 1;
-
-		/* NB, recursion in parseqatom() may swallow rest of branch */
-		parseqatom(v, stopper, type, lp, right, t);
-		NOERRN();
-	}
+    }
 
-	if (!seencontent) {		/* empty branch */
-		if (!partial)
-			NOTE(REG_UUNSPEC);
-		assert(lp == left);
-		EMPTYARC(left, right);
+    if (!seencontent) {		/* empty branch */
+	if (!partial) {
+	    NOTE(REG_UUNSPEC);
 	}
+	assert(lp == left);
+	EMPTYARC(left, right);
+    }
 
-	return t;
+    return t;
 }
-
+
 /*
  - parseqatom - parse one quantified atom or constraint of an RE
- * The bookkeeping near the end cooperates very closely with parsebranch();
- * in particular, it contains a recursion that can involve parsing the rest
- * of the branch, making this function's name somewhat inaccurate.
- ^ static VOID parseqatom(struct vars *, int, int, struct state *,
+ * The bookkeeping near the end cooperates very closely with parsebranch(); in
+ * particular, it contains a recursion that can involve parsing the rest of
+ * the branch, making this function's name somewhat inaccurate.
+ ^ static void parseqatom(struct vars *, int, int, struct state *,
  ^ 	struct state *, struct subre *);
  */
-static VOID
-parseqatom(v, stopper, type, lp, rp, top)
-struct vars *v;
-int stopper;			/* EOS or ')' */
-int type;			/* LACON (lookahead subRE) or PLAIN */
-struct state *lp;		/* left state to hang it on */
-struct state *rp;		/* right state to hang it on */
-struct subre *top;		/* subtree top */
+static void
+parseqatom(
+    struct vars *v,
+    int stopper,		/* EOS or ')' */
+    int type,			/* LACON (lookahead subRE) or PLAIN */
+    struct state *lp,		/* left state to hang it on */
+    struct state *rp,		/* right state to hang it on */
+    struct subre *top)		/* subtree top */
 {
-	struct state *s;	/* temporaries for new states */
-	struct state *s2;
-#	define	ARCV(t, val)	newarc(v->nfa, t, val, lp, rp)
-	int m, n;
-	struct subre *atom;	/* atom's subtree */
-	struct subre *t;
-	int cap;		/* capturing parens? */
-	int pos;		/* positive lookahead? */
-	int subno;		/* capturing-parens or backref number */
-	int atomtype;
-	int qprefer;		/* quantifier short/long preference */
-	int f;
-	struct subre **atomp;	/* where the pointer to atom is */
-
-	/* initial bookkeeping */
-	atom = NULL;
-	assert(lp->nouts == 0);	/* must string new code */
-	assert(rp->nins == 0);	/*  between lp and rp */
-	subno = 0;		/* just to shut lint up */
-
-	/* an atom or constraint... */
-	atomtype = v->nexttype;
-	switch (atomtype) {
+    struct state *s;		/* temporaries for new states */
+    struct state *s2;
+#define	ARCV(t, val)	newarc(v->nfa, t, val, lp, rp)
+    int m, n;
+    struct subre *atom;		/* atom's subtree */
+    struct subre *t;
+    int cap;			/* capturing parens? */
+    int pos;			/* positive lookahead? */
+    int subno;			/* capturing-parens or backref number */
+    int atomtype;
+    int qprefer;		/* quantifier short/long preference */
+    int f;
+    struct subre **atomp;	/* where the pointer to atom is */
+
+    /*
+     * Initial bookkeeping.
+     */
+
+    atom = NULL;
+    assert(lp->nouts == 0);	/* must string new code */
+    assert(rp->nins == 0);	/* between lp and rp */
+    subno = 0;			/* just to shut lint up */
+
+    /*
+     * An atom or constraint...
+     */
+
+    atomtype = v->nexttype;
+    switch (atomtype) {
 	/* first, constraints, which end by returning */
-	case '^':
-		ARCV('^', 1);
-		if (v->cflags&REG_NLANCH)
-			ARCV(BEHIND, v->nlcolor);
-		NEXT();
-		return;
-		break;
-	case '$':
-		ARCV('$', 1);
-		if (v->cflags&REG_NLANCH)
-			ARCV(AHEAD, v->nlcolor);
-		NEXT();
-		return;
-		break;
-	case SBEGIN:
-		ARCV('^', 1);	/* BOL */
-		ARCV('^', 0);	/* or BOS */
-		NEXT();
-		return;
-		break;
-	case SEND:
-		ARCV('$', 1);	/* EOL */
-		ARCV('$', 0);	/* or EOS */
-		NEXT();
-		return;
-		break;
-	case '<':
-		wordchrs(v);	/* does NEXT() */
-		s = newstate(v->nfa);
-		NOERR();
-		nonword(v, BEHIND, lp, s);
-		word(v, AHEAD, s, rp);
-		return;
-		break;
-	case '>':
-		wordchrs(v);	/* does NEXT() */
-		s = newstate(v->nfa);
-		NOERR();
-		word(v, BEHIND, lp, s);
-		nonword(v, AHEAD, s, rp);
-		return;
-		break;
-	case WBDRY:
-		wordchrs(v);	/* does NEXT() */
-		s = newstate(v->nfa);
-		NOERR();
-		nonword(v, BEHIND, lp, s);
-		word(v, AHEAD, s, rp);
-		s = newstate(v->nfa);
-		NOERR();
-		word(v, BEHIND, lp, s);
-		nonword(v, AHEAD, s, rp);
-		return;
-		break;
-	case NWBDRY:
-		wordchrs(v);	/* does NEXT() */
-		s = newstate(v->nfa);
-		NOERR();
-		word(v, BEHIND, lp, s);
-		word(v, AHEAD, s, rp);
-		s = newstate(v->nfa);
-		NOERR();
-		nonword(v, BEHIND, lp, s);
-		nonword(v, AHEAD, s, rp);
-		return;
-		break;
-	case LACON:	/* lookahead constraint */
-		pos = v->nextvalue;
-		NEXT();
-		s = newstate(v->nfa);
-		s2 = newstate(v->nfa);
-		NOERR();
-		t = parse(v, ')', LACON, s, s2);
-		freesubre(v, t);	/* internal structure irrelevant */
-		assert(SEE(')') || ISERR());
-		NEXT();
-		n = newlacon(v, s, s2, pos);
-		NOERR();
-		ARCV(LACON, n);
-		return;
-		break;
-	/* then errors, to get them out of the way */
-	case '*':
-	case '+':
-	case '?':
-	case '{':
-		ERR(REG_BADRPT);
-		return;
-		break;
-	default:
-		ERR(REG_ASSERT);
-		return;
-		break;
-	/* then plain characters, and minor variants on that theme */
-	case ')':		/* unbalanced paren */
-		if ((v->cflags&REG_ADVANCED) != REG_EXTENDED) {
-			ERR(REG_EPAREN);
-			return;
-		}
-		/* legal in EREs due to specification botch */
-		NOTE(REG_UPBOTCH);
-		/* fallthrough into case PLAIN */
-	case PLAIN:
-		onechr(v, v->nextvalue, lp, rp);
-		okcolors(v->nfa, v->cm);
-		NOERR();
-		NEXT();
-		break;
-	case '[':
-		if (v->nextvalue == 1)
-			bracket(v, lp, rp);
-		else
-			cbracket(v, lp, rp);
-		assert(SEE(']') || ISERR());
-		NEXT();
-		break;
-	case '.':
-		rainbow(v->nfa, v->cm, PLAIN,
-				(v->cflags&REG_NLSTOP) ? v->nlcolor : COLORLESS,
-				lp, rp);
-		NEXT();
-		break;
-	/* and finally the ugly stuff */
-	case '(':	/* value flags as capturing or non */
-		cap = (type == LACON) ? 0 : v->nextvalue;
-		if (cap) {
-			v->nsubexp++;
-			subno = v->nsubexp;
-			if ((size_t)subno >= v->nsubs)
-				moresubs(v, subno);
-			assert((size_t)subno < v->nsubs);
-		} else
-			atomtype = PLAIN;	/* something that's not '(' */
-		NEXT();
-		/* need new endpoints because tree will contain pointers */
-		s = newstate(v->nfa);
-		s2 = newstate(v->nfa);
-		NOERR();
-		EMPTYARC(lp, s);
-		EMPTYARC(s2, rp);
-		NOERR();
-		atom = parse(v, ')', PLAIN, s, s2);
-		assert(SEE(')') || ISERR());
-		NEXT();
-		NOERR();
-		if (cap) {
-			v->subs[subno] = atom;
-			t = subre(v, '(', atom->flags|CAP, lp, rp);
-			NOERR();
-			t->subno = subno;
-			t->left = atom;
-			atom = t;
-		}
-		/* postpone everything else pending possible {0} */
-		break;
-	case BACKREF:	/* the Feature From The Black Lagoon */
-		INSIST(type != LACON, REG_ESUBREG);
-		INSIST(v->nextvalue < v->nsubs, REG_ESUBREG);
-		INSIST(v->subs[v->nextvalue] != NULL, REG_ESUBREG);
-		NOERR();
-		assert(v->nextvalue > 0);
-		atom = subre(v, 'b', BACKR, lp, rp);
-		subno = v->nextvalue;
-		atom->subno = subno;
-		EMPTYARC(lp, rp);	/* temporarily, so there's something */
-		NEXT();
-		break;
+    case '^':
+	ARCV('^', 1);
+	if (v->cflags&REG_NLANCH) {
+	    ARCV(BEHIND, v->nlcolor);
 	}
-
-	/* ...and an atom may be followed by a quantifier */
-	switch (v->nexttype) {
-	case '*':
-		m = 0;
-		n = INFINITY;
-		qprefer = (v->nextvalue) ? LONGER : SHORTER;
-		NEXT();
-		break;
-	case '+':
-		m = 1;
-		n = INFINITY;
-		qprefer = (v->nextvalue) ? LONGER : SHORTER;
-		NEXT();
-		break;
-	case '?':
-		m = 0;
-		n = 1;
-		qprefer = (v->nextvalue) ? LONGER : SHORTER;
-		NEXT();
-		break;
-	case '{':
-		NEXT();
-		m = scannum(v);
-		if (EAT(',')) {
-			if (SEE(DIGIT))
-				n = scannum(v);
-			else
-				n = INFINITY;
-			if (m > n) {
-				ERR(REG_BADBR);
-				return;
-			}
-			/* {m,n} exercises preference, even if it's {m,m} */
-			qprefer = (v->nextvalue) ? LONGER : SHORTER;
-		} else {
-			n = m;
-			/* {m} passes operand's preference through */
-			qprefer = 0;
-		}
-		if (!SEE('}')) {	/* catches errors too */
-			ERR(REG_BADBR);
-			return;
-		}
-		NEXT();
-		break;
-	default:		/* no quantifier */
-		m = n = 1;
-		qprefer = 0;
-		break;
+	NEXT();
+	return;
+    case '$':
+	ARCV('$', 1);
+	if (v->cflags&REG_NLANCH) {
+	    ARCV(AHEAD, v->nlcolor);
 	}
+	NEXT();
+	return;
+    case SBEGIN:
+	ARCV('^', 1);		/* BOL */
+	ARCV('^', 0);		/* or BOS */
+	NEXT();
+	return;
+    case SEND:
+	ARCV('$', 1);		/* EOL */
+	ARCV('$', 0);		/* or EOS */
+	NEXT();
+	return;
+    case '<':
+	wordchrs(v);		/* does NEXT() */
+	s = newstate(v->nfa);
+	NOERR();
+	nonword(v, BEHIND, lp, s);
+	word(v, AHEAD, s, rp);
+	return;
+    case '>':
+	wordchrs(v);		/* does NEXT() */
+	s = newstate(v->nfa);
+	NOERR();
+	word(v, BEHIND, lp, s);
+	nonword(v, AHEAD, s, rp);
+	return;
+    case WBDRY:
+	wordchrs(v);		/* does NEXT() */
+	s = newstate(v->nfa);
+	NOERR();
+	nonword(v, BEHIND, lp, s);
+	word(v, AHEAD, s, rp);
+	s = newstate(v->nfa);
+	NOERR();
+	word(v, BEHIND, lp, s);
+	nonword(v, AHEAD, s, rp);
+	return;
+    case NWBDRY:
+	wordchrs(v);		/* does NEXT() */
+	s = newstate(v->nfa);
+	NOERR();
+	word(v, BEHIND, lp, s);
+	word(v, AHEAD, s, rp);
+	s = newstate(v->nfa);
+	NOERR();
+	nonword(v, BEHIND, lp, s);
+	nonword(v, AHEAD, s, rp);
+	return;
+    case LACON:			/* lookahead constraint */
+	pos = v->nextvalue;
+	NEXT();
+	s = newstate(v->nfa);
+	s2 = newstate(v->nfa);
+	NOERR();
+	t = parse(v, ')', LACON, s, s2);
+	freesubre(v, t);	/* internal structure irrelevant */
+	assert(SEE(')') || ISERR());
+	NEXT();
+	n = newlacon(v, s, s2, pos);
+	NOERR();
+	ARCV(LACON, n);
+	return;
 
-	/* annoying special case:  {0} or {0,0} cancels everything */
-	if (m == 0 && n == 0) {
-		if (atom != NULL)
-			freesubre(v, atom);
-		if (atomtype == '(')
-			v->subs[subno] = NULL;
-		delsub(v->nfa, lp, rp);
-		EMPTYARC(lp, rp);
-		return;
+	/*
+	 * Then errors, to get them out of the way.
+	 */
+
+    case '*':
+    case '+':
+    case '?':
+    case '{':
+	ERR(REG_BADRPT);
+	return;
+    default:
+	ERR(REG_ASSERT);
+	return;
+
+	/*
+	 * Then plain characters, and minor variants on that theme.
+	 */
+
+    case ')':			/* unbalanced paren */
+	if ((v->cflags&REG_ADVANCED) != REG_EXTENDED) {
+	    ERR(REG_EPAREN);
+	    return;
 	}
 
-	/* if not a messy case, avoid hard part */
-	assert(!MESSY(top->flags));
-	f = top->flags | qprefer | ((atom != NULL) ? atom->flags : 0);
-	if (atomtype != '(' && atomtype != BACKREF && !MESSY(UP(f))) {
-		if (!(m == 1 && n == 1))
-			repeat(v, lp, rp, m, n);
-		if (atom != NULL)
-			freesubre(v, atom);
-		top->flags = f;
-		return;
+	/*
+	 * Legal in EREs due to specification botch.
+	 */
+
+	NOTE(REG_UPBOTCH);
+	/* fallthrough into case PLAIN */
+    case PLAIN:
+	onechr(v, v->nextvalue, lp, rp);
+	okcolors(v->nfa, v->cm);
+	NOERR();
+	NEXT();
+	break;
+    case '[':
+	if (v->nextvalue == 1) {
+	    bracket(v, lp, rp);
+	} else {
+	    cbracket(v, lp, rp);
 	}
+	assert(SEE(']') || ISERR());
+	NEXT();
+	break;
+    case '.':
+	rainbow(v->nfa, v->cm, PLAIN,
+		(v->cflags&REG_NLSTOP) ? v->nlcolor : COLORLESS, lp, rp);
+	NEXT();
+	break;
 
 	/*
-	 * hard part:  something messy
-	 * That is, capturing parens, back reference, short/long clash, or
-	 * an atom with substructure containing one of those.
+	 * And finally the ugly stuff.
 	 */
 
-	/* now we'll need a subre for the contents even if they're boring */
-	if (atom == NULL) {
-		atom = subre(v, '=', 0, lp, rp);
-		NOERR();
+    case '(':			/* value flags as capturing or non */
+	cap = (type == LACON) ? 0 : v->nextvalue;
+	if (cap) {
+	    v->nsubexp++;
+	    subno = v->nsubexp;
+	    if ((size_t)subno >= v->nsubs) {
+		moresubs(v, subno);
+	    }
+	    assert((size_t)subno < v->nsubs);
+	} else {
+	    atomtype = PLAIN;	/* something that's not '(' */
 	}
+	NEXT();
 
 	/*
-	 * prepare a general-purpose state skeleton
-	 *
-	 *    ---> [s] ---prefix---> [begin] ---atom---> [end] ----rest---> [rp]
-	 *   /                                            /
-	 * [lp] ----> [s2] ----bypass---------------------
-	 *
-	 * where bypass is an empty, and prefix is some repetitions of atom
+	 * Need new endpoints because tree will contain pointers.
 	 */
-	s = newstate(v->nfa);		/* first, new endpoints for the atom */
+
+	s = newstate(v->nfa);
 	s2 = newstate(v->nfa);
 	NOERR();
-	moveouts(v->nfa, lp, s);
-	moveins(v->nfa, rp, s2);
+	EMPTYARC(lp, s);
+	EMPTYARC(s2, rp);
 	NOERR();
-	atom->begin = s;
-	atom->end = s2;
-	s = newstate(v->nfa);		/* and spots for prefix and bypass */
-	s2 = newstate(v->nfa);
+	atom = parse(v, ')', PLAIN, s, s2);
+	assert(SEE(')') || ISERR());
+	NEXT();
 	NOERR();
-	EMPTYARC(lp, s);
-	EMPTYARC(lp, s2);
+	if (cap) {
+	    v->subs[subno] = atom;
+	    t = subre(v, '(', atom->flags|CAP, lp, rp);
+	    NOERR();
+	    t->subno = subno;
+	    t->left = atom;
+	    atom = t;
+	}
+
+	/*
+	 * Postpone everything else pending possible {0}.
+	 */
+
+	break;
+    case BACKREF:		/* the Feature From The Black Lagoon */
+	INSIST(type != LACON, REG_ESUBREG);
+	INSIST(v->nextvalue < v->nsubs, REG_ESUBREG);
+	INSIST(v->subs[v->nextvalue] != NULL, REG_ESUBREG);
 	NOERR();
+	assert(v->nextvalue > 0);
+	atom = subre(v, 'b', BACKR, lp, rp);
+	subno = v->nextvalue;
+	atom->subno = subno;
+	EMPTYARC(lp, rp);	/* temporarily, so there's something */
+	NEXT();
+	break;
+    }
 
-	/* break remaining subRE into x{...} and what follows */
-	t = subre(v, '.', COMBINE(qprefer, atom->flags), lp, rp);
-	t->left = atom;
-	atomp = &t->left;
-	/* here we should recurse... but we must postpone that to the end */
-
-	/* split top into prefix and remaining */
-	assert(top->op == '=' && top->left == NULL && top->right == NULL);
-	top->left = subre(v, '=', top->flags, top->begin, lp);
-	top->op = '.';
-	top->right = t;
-
-	/* if it's a backref, now is the time to replicate the subNFA */
-	if (atomtype == BACKREF) {
-		assert(atom->begin->nouts == 1);	/* just the EMPTY */
-		delsub(v->nfa, atom->begin, atom->end);
-		assert(v->subs[subno] != NULL);
-		/* and here's why the recursion got postponed:  it must */
-		/* wait until the skeleton is filled in, because it may */
-		/* hit a backref that wants to copy the filled-in skeleton */
-		dupnfa(v->nfa, v->subs[subno]->begin, v->subs[subno]->end,
-						atom->begin, atom->end);
-		NOERR();
-	}
+    /*
+     * ...and an atom may be followed by a quantifier.
+     */
 
-	/* it's quantifier time; first, turn x{0,...} into x{1,...}|empty */
-	if (m == 0) {
-		EMPTYARC(s2, atom->end);		/* the bypass */
-		assert(PREF(qprefer) != 0);
-		f = COMBINE(qprefer, atom->flags);
-		t = subre(v, '|', f, lp, atom->end);
-		NOERR();
-		t->left = atom;
-		t->right = subre(v, '|', PREF(f), s2, atom->end);
-		NOERR();
-		t->right->left = subre(v, '=', 0, s2, atom->end);
-		NOERR();
-		*atomp = t;
-		atomp = &t->left;
-		m = 1;
-	}
+    switch (v->nexttype) {
+    case '*':
+	m = 0;
+	n = INFINITY;
+	qprefer = (v->nextvalue) ? LONGER : SHORTER;
+	NEXT();
+	break;
+    case '+':
+	m = 1;
+	n = INFINITY;
+	qprefer = (v->nextvalue) ? LONGER : SHORTER;
+	NEXT();
+	break;
+    case '?':
+	m = 0;
+	n = 1;
+	qprefer = (v->nextvalue) ? LONGER : SHORTER;
+	NEXT();
+	break;
+    case '{':
+	NEXT();
+	m = scannum(v);
+	if (EAT(',')) {
+	    if (SEE(DIGIT)) {
+		n = scannum(v);
+	    } else {
+		n = INFINITY;
+	    }
+	    if (m > n) {
+		ERR(REG_BADBR);
+		return;
+	    }
 
-	/* deal with the rest of the quantifier */
-	if (atomtype == BACKREF) {
-		/* special case:  backrefs have internal quantifiers */
-		EMPTYARC(s, atom->begin);	/* empty prefix */
-		/* just stuff everything into atom */
-		repeat(v, atom->begin, atom->end, m, n);
-		atom->min = (short)m;
-		atom->max = (short)n;
-		atom->flags |= COMBINE(qprefer, atom->flags);
-	} else if (m == 1 && n == 1) {
-		/* no/vacuous quantifier:  done */
-		EMPTYARC(s, atom->begin);	/* empty prefix */
+	    /*
+	     * {m,n} exercises preference, even if it's {m,m}
+	     */
+
+	    qprefer = (v->nextvalue) ? LONGER : SHORTER;
 	} else {
-		/* turn x{m,n} into x{m-1,n-1}x, with capturing */
-		/*  parens in only second x */
-		dupnfa(v->nfa, atom->begin, atom->end, s, atom->begin);
-		assert(m >= 1 && m != INFINITY && n >= 1);
-		repeat(v, s, atom->begin, m-1, (n == INFINITY) ? n : n-1);
-		f = COMBINE(qprefer, atom->flags);
-		t = subre(v, '.', f, s, atom->end);	/* prefix and atom */
-		NOERR();
-		t->left = subre(v, '=', PREF(f), s, atom->begin);
-		NOERR();
-		t->right = atom;
-		*atomp = t;
+	    n = m;
+	    /*
+	     * {m} passes operand's preference through.
+	     */
+
+	    qprefer = 0;
+	}
+	if (!SEE('}')) {	/* catches errors too */
+	    ERR(REG_BADBR);
+	    return;
+	}
+	NEXT();
+	break;
+    default:			/* no quantifier */
+	m = n = 1;
+	qprefer = 0;
+	break;
+    }
+
+    /*
+     * Annoying special case: {0} or {0,0} cancels everything.
+     */
+
+    if (m == 0 && n == 0) {
+	if (atom != NULL) {
+	    freesubre(v, atom);
 	}
+	if (atomtype == '(') {
+	    v->subs[subno] = NULL;
+	}
+	delsub(v->nfa, lp, rp);
+	EMPTYARC(lp, rp);
+	return;
+    }
 
-	/* and finally, look after that postponed recursion */
-	t = top->right;
-	if (!(SEE('|') || SEE(stopper) || SEE(EOS)))
-		t->right = parsebranch(v, stopper, type, atom->end, rp, 1);
-	else {
-		EMPTYARC(atom->end, rp);
-		t->right = subre(v, '=', 0, atom->end, rp);
+    /*
+     * If not a messy case, avoid hard part.
+     */
+
+    assert(!MESSY(top->flags));
+    f = top->flags | qprefer | ((atom != NULL) ? atom->flags : 0);
+    if (atomtype != '(' && atomtype != BACKREF && !MESSY(UP(f))) {
+	if (!(m == 1 && n == 1)) {
+	    repeat(v, lp, rp, m, n);
+	}
+	if (atom != NULL) {
+	    freesubre(v, atom);
 	}
+	top->flags = f;
+	return;
+    }
+
+    /*
+     * hard part: something messy
+     * That is, capturing parens, back reference, short/long clash, or an atom
+     * with substructure containing one of those.
+     */
+
+    /*
+     * Now we'll need a subre for the contents even if they're boring.
+     */
+
+    if (atom == NULL) {
+	atom = subre(v, '=', 0, lp, rp);
 	NOERR();
-	assert(SEE('|') || SEE(stopper) || SEE(EOS));
-	t->flags |= COMBINE(t->flags, t->right->flags);
-	top->flags |= COMBINE(top->flags, t->flags);
-}
+    }
+
+    /*
+     * Prepare a general-purpose state skeleton.
+     *
+     *    ---> [s] ---prefix---> [begin] ---atom---> [end] ----rest---> [rp]
+     *   /                                            /
+     * [lp] ----> [s2] ----bypass---------------------
+     *
+     * where bypass is an empty, and prefix is some repetitions of atom
+     */
+
+    s = newstate(v->nfa);	/* first, new endpoints for the atom */
+    s2 = newstate(v->nfa);
+    NOERR();
+    moveouts(v->nfa, lp, s);
+    moveins(v->nfa, rp, s2);
+    NOERR();
+    atom->begin = s;
+    atom->end = s2;
+    s = newstate(v->nfa);	/* and spots for prefix and bypass */
+    s2 = newstate(v->nfa);
+    NOERR();
+    EMPTYARC(lp, s);
+    EMPTYARC(lp, s2);
+    NOERR();
+
+    /*
+     * Break remaining subRE into x{...} and what follows.
+     */
+
+    t = subre(v, '.', COMBINE(qprefer, atom->flags), lp, rp);
+    t->left = atom;
+    atomp = &t->left;
+
+    /*
+     * Here we should recurse... but we must postpone that to the end.
+     */
+
+    /*
+     * Split top into prefix and remaining.
+     */
+
+    assert(top->op == '=' && top->left == NULL && top->right == NULL);
+    top->left = subre(v, '=', top->flags, top->begin, lp);
+    top->op = '.';
+    top->right = t;
+
+    /*
+     * If it's a backref, now is the time to replicate the subNFA.
+     */
+
+    if (atomtype == BACKREF) {
+	assert(atom->begin->nouts == 1);	/* just the EMPTY */
+	delsub(v->nfa, atom->begin, atom->end);
+	assert(v->subs[subno] != NULL);
+
+	/*
+	 * And here's why the recursion got postponed: it must wait until the
+	 * skeleton is filled in, because it may hit a backref that wants to
+	 * copy the filled-in skeleton.
+	 */
+
+	dupnfa(v->nfa, v->subs[subno]->begin, v->subs[subno]->end,
+		atom->begin, atom->end);
+	NOERR();
+    }
+
+    /*
+     * It's quantifier time; first, turn x{0,...} into x{1,...}|empty
+     */
+
+    if (m == 0) {
+	EMPTYARC(s2, atom->end);/* the bypass */
+	assert(PREF(qprefer) != 0);
+	f = COMBINE(qprefer, atom->flags);
+	t = subre(v, '|', f, lp, atom->end);
+	NOERR();
+	t->left = atom;
+	t->right = subre(v, '|', PREF(f), s2, atom->end);
+	NOERR();
+	t->right->left = subre(v, '=', 0, s2, atom->end);
+	NOERR();
+	*atomp = t;
+	atomp = &t->left;
+	m = 1;
+    }
+
+    /*
+     * Deal with the rest of the quantifier.
+     */
+
+    if (atomtype == BACKREF) {
+	/*
+	 * Special case: backrefs have internal quantifiers.
+	 */
+
+	EMPTYARC(s, atom->begin);	/* empty prefix */
+
+	/*
+	 * Just stuff everything into atom.
+	 */
 
+	repeat(v, atom->begin, atom->end, m, n);
+	atom->min = (short) m;
+	atom->max = (short) n;
+	atom->flags |= COMBINE(qprefer, atom->flags);
+    } else if (m == 1 && n == 1) {
+	/*
+	 * No/vacuous quantifier: done.
+	 */
+
+	EMPTYARC(s, atom->begin);	/* empty prefix */
+    } else {
+	/*
+	 * Turn x{m,n} into x{m-1,n-1}x, with capturing parens in only second
+	 * x
+	 */
+
+	dupnfa(v->nfa, atom->begin, atom->end, s, atom->begin);
+	assert(m >= 1 && m != INFINITY && n >= 1);
+	repeat(v, s, atom->begin, m-1, (n == INFINITY) ? n : n-1);
+	f = COMBINE(qprefer, atom->flags);
+	t = subre(v, '.', f, s, atom->end);	/* prefix and atom */
+	NOERR();
+	t->left = subre(v, '=', PREF(f), s, atom->begin);
+	NOERR();
+	t->right = atom;
+	*atomp = t;
+    }
+
+    /*
+     * And finally, look after that postponed recursion.
+     */
+
+    t = top->right;
+    if (!(SEE('|') || SEE(stopper) || SEE(EOS))) {
+	t->right = parsebranch(v, stopper, type, atom->end, rp, 1);
+    } else {
+	EMPTYARC(atom->end, rp);
+	t->right = subre(v, '=', 0, atom->end, rp);
+    }
+    NOERR();
+    assert(SEE('|') || SEE(stopper) || SEE(EOS));
+    t->flags |= COMBINE(t->flags, t->right->flags);
+    top->flags |= COMBINE(top->flags, t->flags);
+}
+
 /*
  - nonword - generate arcs for non-word-character ahead or behind
- ^ static VOID nonword(struct vars *, int, struct state *, struct state *);
+ ^ static void nonword(struct vars *, int, struct state *, struct state *);
  */
-static VOID
-nonword(v, dir, lp, rp)
-struct vars *v;
-int dir;			/* AHEAD or BEHIND */
-struct state *lp;
-struct state *rp;
+static void
+nonword(
+    struct vars *v,
+    int dir,			/* AHEAD or BEHIND */
+    struct state *lp,
+    struct state *rp)
 {
-	int anchor = (dir == AHEAD) ? '$' : '^';
+    int anchor = (dir == AHEAD) ? '$' : '^';
 
-	assert(dir == AHEAD || dir == BEHIND);
-	newarc(v->nfa, anchor, 1, lp, rp);
-	newarc(v->nfa, anchor, 0, lp, rp);
-	colorcomplement(v->nfa, v->cm, dir, v->wordchrs, lp, rp);
-	/* (no need for special attention to \n) */
+    assert(dir == AHEAD || dir == BEHIND);
+    newarc(v->nfa, anchor, 1, lp, rp);
+    newarc(v->nfa, anchor, 0, lp, rp);
+    colorcomplement(v->nfa, v->cm, dir, v->wordchrs, lp, rp);
+    /* (no need for special attention to \n) */
 }
-
+
 /*
  - word - generate arcs for word character ahead or behind
- ^ static VOID word(struct vars *, int, struct state *, struct state *);
+ ^ static void word(struct vars *, int, struct state *, struct state *);
  */
-static VOID
-word(v, dir, lp, rp)
-struct vars *v;
-int dir;			/* AHEAD or BEHIND */
-struct state *lp;
-struct state *rp;
+static void
+word(
+    struct vars *v,
+    int dir,			/* AHEAD or BEHIND */
+    struct state *lp,
+    struct state *rp)
 {
-	assert(dir == AHEAD || dir == BEHIND);
-	cloneouts(v->nfa, v->wordchrs, lp, rp, dir);
-	/* (no need for special attention to \n) */
+    assert(dir == AHEAD || dir == BEHIND);
+    cloneouts(v->nfa, v->wordchrs, lp, rp, dir);
+    /* (no need for special attention to \n) */
 }
-
+
 /*
  - scannum - scan a number
  ^ static int scannum(struct vars *);
  */
 static int			/* value, <= DUPMAX */
-scannum(v)
-struct vars *v;
+scannum(
+    struct vars *v)
 {
-	int n = 0;
+    int n = 0;
 
-	while (SEE(DIGIT) && n < DUPMAX) {
-		n = n*10 + v->nextvalue;
-		NEXT();
-	}
-	if (SEE(DIGIT) || n > DUPMAX) {
-		ERR(REG_BADBR);
-		return 0;
-	}
-	return n;
+    while (SEE(DIGIT) && n < DUPMAX) {
+	n = n*10 + v->nextvalue;
+	NEXT();
+    }
+    if (SEE(DIGIT) || n > DUPMAX) {
+	ERR(REG_BADBR);
+	return 0;
+    }
+    return n;
 }
-
+
 /*
  - repeat - replicate subNFA for quantifiers
  * The duplication sequences used here are chosen carefully so that any
  * pointers starting out pointing into the subexpression end up pointing into
- * the last occurrence.  (Note that it may not be strung between the same
- * left and right end states, however!)  This used to be important for the
- * subRE tree, although the important bits are now handled by the in-line
- * code in parse(), and when this is called, it doesn't matter any more.
- ^ static VOID repeat(struct vars *, struct state *, struct state *, int, int);
+ * the last occurrence. (Note that it may not be strung between the same left
+ * and right end states, however!) This used to be important for the subRE
+ * tree, although the important bits are now handled by the in-line code in
+ * parse(), and when this is called, it doesn't matter any more.
+ ^ static void repeat(struct vars *, struct state *, struct state *, int, int);
  */
-static VOID
-repeat(v, lp, rp, m, n)
-struct vars *v;
-struct state *lp;
-struct state *rp;
-int m;
-int n;
+static void
+repeat(
+    struct vars *v,
+    struct state *lp,
+    struct state *rp,
+    int m,
+    int n)
 {
-#	define	SOME	2
-#	define	INF	3
-#	define	PAIR(x, y)	((x)*4 + (y))
-#	define	REDUCE(x)	( ((x) == INFINITY) ? INF : (((x) > 1) ? SOME : (x)) )
-	CONST int rm = REDUCE(m);
-	CONST int rn = REDUCE(n);
-	struct state *s;
-	struct state *s2;
-
-	switch (PAIR(rm, rn)) {
-	case PAIR(0, 0):		/* empty string */
-		delsub(v->nfa, lp, rp);
-		EMPTYARC(lp, rp);
-		break;
-	case PAIR(0, 1):		/* do as x| */
-		EMPTYARC(lp, rp);
-		break;
-	case PAIR(0, SOME):		/* do as x{1,n}| */
-		repeat(v, lp, rp, 1, n);
-		NOERR();
-		EMPTYARC(lp, rp);
-		break;
-	case PAIR(0, INF):		/* loop x around */
-		s = newstate(v->nfa);
-		NOERR();
-		moveouts(v->nfa, lp, s);
-		moveins(v->nfa, rp, s);
-		EMPTYARC(lp, s);
-		EMPTYARC(s, rp);
-		break;
-	case PAIR(1, 1):		/* no action required */
-		break;
-	case PAIR(1, SOME):		/* do as x{0,n-1}x = (x{1,n-1}|)x */
-		s = newstate(v->nfa);
-		NOERR();
-		moveouts(v->nfa, lp, s);
-		dupnfa(v->nfa, s, rp, lp, s);
-		NOERR();
-		repeat(v, lp, s, 1, n-1);
-		NOERR();
-		EMPTYARC(lp, s);
-		break;
-	case PAIR(1, INF):		/* add loopback arc */
-		s = newstate(v->nfa);
-		s2 = newstate(v->nfa);
-		NOERR();
-		moveouts(v->nfa, lp, s);
-		moveins(v->nfa, rp, s2);
-		EMPTYARC(lp, s);
-		EMPTYARC(s2, rp);
-		EMPTYARC(s2, s);
-		break;
-	case PAIR(SOME, SOME):		/* do as x{m-1,n-1}x */
-		s = newstate(v->nfa);
-		NOERR();
-		moveouts(v->nfa, lp, s);
-		dupnfa(v->nfa, s, rp, lp, s);
-		NOERR();
-		repeat(v, lp, s, m-1, n-1);
-		break;
-	case PAIR(SOME, INF):		/* do as x{m-1,}x */
-		s = newstate(v->nfa);
-		NOERR();
-		moveouts(v->nfa, lp, s);
-		dupnfa(v->nfa, s, rp, lp, s);
-		NOERR();
-		repeat(v, lp, s, m-1, n);
-		break;
-	default:
-		ERR(REG_ASSERT);
-		break;
-	}
+#define	SOME		2
+#define	INF		3
+#define	PAIR(x, y)	((x)*4 + (y))
+#define	REDUCE(x)	( ((x) == INFINITY) ? INF : (((x) > 1) ? SOME : (x)) )
+    const int rm = REDUCE(m);
+    const int rn = REDUCE(n);
+    struct state *s, *s2;
+
+    switch (PAIR(rm, rn)) {
+    case PAIR(0, 0):		/* empty string */
+	delsub(v->nfa, lp, rp);
+	EMPTYARC(lp, rp);
+	break;
+    case PAIR(0, 1):		/* do as x| */
+	EMPTYARC(lp, rp);
+	break;
+    case PAIR(0, SOME):		/* do as x{1,n}| */
+	repeat(v, lp, rp, 1, n);
+	NOERR();
+	EMPTYARC(lp, rp);
+	break;
+    case PAIR(0, INF):		/* loop x around */
+	s = newstate(v->nfa);
+	NOERR();
+	moveouts(v->nfa, lp, s);
+	moveins(v->nfa, rp, s);
+	EMPTYARC(lp, s);
+	EMPTYARC(s, rp);
+	break;
+    case PAIR(1, 1):		/* no action required */
+	break;
+    case PAIR(1, SOME):		/* do as x{0,n-1}x = (x{1,n-1}|)x */
+	s = newstate(v->nfa);
+	NOERR();
+	moveouts(v->nfa, lp, s);
+	dupnfa(v->nfa, s, rp, lp, s);
+	NOERR();
+	repeat(v, lp, s, 1, n-1);
+	NOERR();
+	EMPTYARC(lp, s);
+	break;
+    case PAIR(1, INF):		/* add loopback arc */
+	s = newstate(v->nfa);
+	s2 = newstate(v->nfa);
+	NOERR();
+	moveouts(v->nfa, lp, s);
+	moveins(v->nfa, rp, s2);
+	EMPTYARC(lp, s);
+	EMPTYARC(s2, rp);
+	EMPTYARC(s2, s);
+	break;
+    case PAIR(SOME, SOME):		/* do as x{m-1,n-1}x */
+	s = newstate(v->nfa);
+	NOERR();
+	moveouts(v->nfa, lp, s);
+	dupnfa(v->nfa, s, rp, lp, s);
+	NOERR();
+	repeat(v, lp, s, m-1, n-1);
+	break;
+    case PAIR(SOME, INF):		/* do as x{m-1,}x */
+	s = newstate(v->nfa);
+	NOERR();
+	moveouts(v->nfa, lp, s);
+	dupnfa(v->nfa, s, rp, lp, s);
+	NOERR();
+	repeat(v, lp, s, m-1, n);
+	break;
+    default:
+	ERR(REG_ASSERT);
+	break;
+    }
 }
-
+
 /*
  - bracket - handle non-complemented bracket expression
  * Also called from cbracket for complemented bracket expressions.
- ^ static VOID bracket(struct vars *, struct state *, struct state *);
+ ^ static void bracket(struct vars *, struct state *, struct state *);
  */
-static VOID
-bracket(v, lp, rp)
-struct vars *v;
-struct state *lp;
-struct state *rp;
+static void
+bracket(
+    struct vars *v,
+    struct state *lp,
+    struct state *rp)
 {
-	assert(SEE('['));
-	NEXT();
-	while (!SEE(']') && !SEE(EOS))
-		brackpart(v, lp, rp);
-	assert(SEE(']') || ISERR());
-	okcolors(v->nfa, v->cm);
+    assert(SEE('['));
+    NEXT();
+    while (!SEE(']') && !SEE(EOS)) {
+	brackpart(v, lp, rp);
+    }
+    assert(SEE(']') || ISERR());
+    okcolors(v->nfa, v->cm);
 }
-
+
 /*
  - cbracket - handle complemented bracket expression
  * We do it by calling bracket() with dummy endpoints, and then complementing
- * the result.  The alternative would be to invoke rainbow(), and then delete
+ * the result. The alternative would be to invoke rainbow(), and then delete
  * arcs as the b.e. is seen... but that gets messy.
- ^ static VOID cbracket(struct vars *, struct state *, struct state *);
+ ^ static void cbracket(struct vars *, struct state *, struct state *);
  */
-static VOID
-cbracket(v, lp, rp)
-struct vars *v;
-struct state *lp;
-struct state *rp;
+static void
+cbracket(
+    struct vars *v,
+    struct state *lp,
+    struct state *rp)
 {
-	struct state *left = newstate(v->nfa);
-	struct state *right = newstate(v->nfa);
-	struct state *s;
-	struct arc *a;			/* arc from lp */
-	struct arc *ba;			/* arc from left, from bracket() */
-	struct arc *pa;			/* MCCE-prototype arc */
-	color co;
-	chr *p;
-	int i;
+    struct state *left = newstate(v->nfa);
+    struct state *right = newstate(v->nfa);
 
-	NOERR();
-	bracket(v, left, right);
-	if (v->cflags&REG_NLSTOP)
-		newarc(v->nfa, PLAIN, v->nlcolor, left, right);
-	NOERR();
+    NOERR();
+    bracket(v, left, right);
+    if (v->cflags&REG_NLSTOP) {
+	newarc(v->nfa, PLAIN, v->nlcolor, left, right);
+    }
+    NOERR();
 
-	assert(lp->nouts == 0);		/* all outarcs will be ours */
+    assert(lp->nouts == 0);	/* all outarcs will be ours */
 
-	/* easy part of complementing */
-	colorcomplement(v->nfa, v->cm, PLAIN, left, lp, rp);
-	NOERR();
-	if (v->mcces == NULL) {		/* no MCCEs -- we're done */
-		dropstate(v->nfa, left);
-		assert(right->nins == 0);
-		freestate(v->nfa, right);
-		return;
-	}
-
-	/* but complementing gets messy in the presence of MCCEs... */
-	NOTE(REG_ULOCALE);
-	for (p = v->mcces->chrs, i = v->mcces->nchrs; i > 0; p++, i--) {
-		co = GETCOLOR(v->cm, *p);
-		a = findarc(lp, PLAIN, co);
-		ba = findarc(left, PLAIN, co);
-		if (ba == NULL) {
-			assert(a != NULL);
-			freearc(v->nfa, a);
-		} else {
-			assert(a == NULL);
-		}
-		s = newstate(v->nfa);
-		NOERR();
-		newarc(v->nfa, PLAIN, co, lp, s);
-		NOERR();
-		pa = findarc(v->mccepbegin, PLAIN, co);
-		assert(pa != NULL);
-		if (ba == NULL) {	/* easy case, need all of them */
-			cloneouts(v->nfa, pa->to, s, rp, PLAIN);
-			newarc(v->nfa, '$', 1, s, rp);
-			newarc(v->nfa, '$', 0, s, rp);
-			colorcomplement(v->nfa, v->cm, AHEAD, pa->to, s, rp);
-		} else {		/* must be selective */
-			if (findarc(ba->to, '$', 1) == NULL) {
-				newarc(v->nfa, '$', 1, s, rp);
-				newarc(v->nfa, '$', 0, s, rp);
-				colorcomplement(v->nfa, v->cm, AHEAD, pa->to,
-									 s, rp);
-			}
-			for (pa = pa->to->outs; pa != NULL; pa = pa->outchain)
-				if (findarc(ba->to, PLAIN, pa->co) == NULL)
-					newarc(v->nfa, PLAIN, pa->co, s, rp);
-			if (s->nouts == 0)	/* limit of selectivity: none */
-				dropstate(v->nfa, s);	/* frees arc too */
-		}
-		NOERR();
-	}
+    /*
+     * Easy part of complementing, and all there is to do since the MCCE code
+     * was removed.
+     */
 
-	delsub(v->nfa, left, right);
-	assert(left->nouts == 0);
-	freestate(v->nfa, left);
-	assert(right->nins == 0);
-	freestate(v->nfa, right);
+    colorcomplement(v->nfa, v->cm, PLAIN, left, lp, rp);
+    NOERR();
+    dropstate(v->nfa, left);
+    assert(right->nins == 0);
+    freestate(v->nfa, right);
+    return;
 }
-
+
 /*
  - brackpart - handle one item (or range) within a bracket expression
- ^ static VOID brackpart(struct vars *, struct state *, struct state *);
+ ^ static void brackpart(struct vars *, struct state *, struct state *);
  */
-static VOID
-brackpart(v, lp, rp)
-struct vars *v;
-struct state *lp;
-struct state *rp;
+static void
+brackpart(
+    struct vars *v,
+    struct state *lp,
+    struct state *rp)
 {
-	celt startc;
-	celt endc;
-	struct cvec *cv;
-	CONST chr *startp;
-	CONST chr *endp;
-	chr c[1];
-
-	/* parse something, get rid of special cases, take shortcuts */
+    celt startc, endc;
+    struct cvec *cv;
+    const chr *startp, *endp;
+    chr c[1];
+
+    /*
+     * Parse something, get rid of special cases, take shortcuts.
+     */
+
+    switch (v->nexttype) {
+    case RANGE:			/* a-b-c or other botch */
+	ERR(REG_ERANGE);
+	return;
+	break;
+    case PLAIN:
+	c[0] = v->nextvalue;
+	NEXT();
+
+	/*
+	 * Shortcut for ordinary chr (not range).
+	 */
+
+	if (!SEE(RANGE)) {
+	    onechr(v, c[0], lp, rp);
+	    return;
+	}
+	startc = element(v, c, c+1);
+	NOERR();
+	break;
+    case COLLEL:
+	startp = v->now;
+	endp = scanplain(v);
+	INSIST(startp < endp, REG_ECOLLATE);
+	NOERR();
+	startc = element(v, startp, endp);
+	NOERR();
+	break;
+    case ECLASS:
+	startp = v->now;
+	endp = scanplain(v);
+	INSIST(startp < endp, REG_ECOLLATE);
+	NOERR();
+	startc = element(v, startp, endp);
+	NOERR();
+	cv = eclass(v, startc, (v->cflags&REG_ICASE));
+	NOERR();
+	dovec(v, cv, lp, rp);
+	return;
+	break;
+    case CCLASS:
+	startp = v->now;
+	endp = scanplain(v);
+	INSIST(startp < endp, REG_ECTYPE);
+	NOERR();
+	cv = cclass(v, startp, endp, (v->cflags&REG_ICASE));
+	NOERR();
+	dovec(v, cv, lp, rp);
+	return;
+	break;
+    default:
+	ERR(REG_ASSERT);
+	return;
+	break;
+    }
+
+    if (SEE(RANGE)) {
+	NEXT();
 	switch (v->nexttype) {
-	case RANGE:			/* a-b-c or other botch */
-		ERR(REG_ERANGE);
-		return;
-		break;
 	case PLAIN:
-		c[0] = v->nextvalue;
-		NEXT();
-		/* shortcut for ordinary chr (not range, not MCCE leader) */
-		if (!SEE(RANGE) && !ISCELEADER(v, c[0])) {
-			onechr(v, c[0], lp, rp);
-			return;
-		}
-		startc = element(v, c, c+1);
-		NOERR();
-		break;
+	case RANGE:
+	    c[0] = v->nextvalue;
+	    NEXT();
+	    endc = element(v, c, c+1);
+	    NOERR();
+	    break;
 	case COLLEL:
-		startp = v->now;
-		endp = scanplain(v);
-		INSIST(startp < endp, REG_ECOLLATE);
-		NOERR();
-		startc = element(v, startp, endp);
-		NOERR();
-		break;
-	case ECLASS:
-		startp = v->now;
-		endp = scanplain(v);
-		INSIST(startp < endp, REG_ECOLLATE);
-		NOERR();
-		startc = element(v, startp, endp);
-		NOERR();
-		cv = eclass(v, startc, (v->cflags&REG_ICASE));
-		NOERR();
-		dovec(v, cv, lp, rp);
-		return;
-		break;
-	case CCLASS:
-		startp = v->now;
-		endp = scanplain(v);
-		INSIST(startp < endp, REG_ECTYPE);
-		NOERR();
-		cv = cclass(v, startp, endp, (v->cflags&REG_ICASE));
-		NOERR();
-		dovec(v, cv, lp, rp);
-		return;
-		break;
+	    startp = v->now;
+	    endp = scanplain(v);
+	    INSIST(startp < endp, REG_ECOLLATE);
+	    NOERR();
+	    endc = element(v, startp, endp);
+	    NOERR();
+	    break;
 	default:
-		ERR(REG_ASSERT);
-		return;
-		break;
+	    ERR(REG_ERANGE);
+	    return;
+	    break;
 	}
+    } else {
+	endc = startc;
+    }
 
-	if (SEE(RANGE)) {
-		NEXT();
-		switch (v->nexttype) {
-		case PLAIN:
-		case RANGE:
-			c[0] = v->nextvalue;
-			NEXT();
-			endc = element(v, c, c+1);
-			NOERR();
-			break;
-		case COLLEL:
-			startp = v->now;
-			endp = scanplain(v);
-			INSIST(startp < endp, REG_ECOLLATE);
-			NOERR();
-			endc = element(v, startp, endp);
-			NOERR();
-			break;
-		default:
-			ERR(REG_ERANGE);
-			return;
-			break;
-		}
-	} else
-		endc = startc;
+    /*
+     * Ranges are unportable. Actually, standard C does guarantee that digits
+     * are contiguous, but making that an exception is just too complicated.
+     */
 
-	/*
-	 * Ranges are unportable.  Actually, standard C does
-	 * guarantee that digits are contiguous, but making
-	 * that an exception is just too complicated.
-	 */
-	if (startc != endc)
-		NOTE(REG_UUNPORT);
-	cv = range(v, startc, endc, (v->cflags&REG_ICASE));
-	NOERR();
-	dovec(v, cv, lp, rp);
+    if (startc != endc) {
+	NOTE(REG_UUNPORT);
+    }
+    cv = range(v, startc, endc, (v->cflags&REG_ICASE));
+    NOERR();
+    dovec(v, cv, lp, rp);
 }
-
+
 /*
  - scanplain - scan PLAIN contents of [. etc.
- * Certain bits of trickery in lex.c know that this code does not try
- * to look past the final bracket of the [. etc.
- ^ static chr *scanplain(struct vars *);
+ * Certain bits of trickery in lex.c know that this code does not try to look
+ * past the final bracket of the [. etc.
+ ^ static const chr *scanplain(struct vars *);
  */
-static CONST chr *			/* just after end of sequence */
-scanplain(v)
-struct vars *v;
+static const chr *		/* just after end of sequence */
+scanplain(
+    struct vars *v)
 {
-	CONST chr *endp;
+    const chr *endp;
 
-	assert(SEE(COLLEL) || SEE(ECLASS) || SEE(CCLASS));
-	NEXT();
+    assert(SEE(COLLEL) || SEE(ECLASS) || SEE(CCLASS));
+    NEXT();
 
+    endp = v->now;
+    while (SEE(PLAIN)) {
 	endp = v->now;
-	while (SEE(PLAIN)) {
-		endp = v->now;
-		NEXT();
-	}
-
-	assert(SEE(END) || ISERR());
 	NEXT();
+    }
 
-	return endp;
-}
+    assert(SEE(END) || ISERR());
+    NEXT();
 
+    return endp;
+}
+
 /*
  - onechr - fill in arcs for a plain character, and possible case complements
  * This is mostly a shortcut for efficient handling of the common case.
- ^ static VOID onechr(struct vars *, pchr, struct state *, struct state *);
+ ^ static void onechr(struct vars *, pchr, struct state *, struct state *);
  */
-static VOID
-onechr(v, c, lp, rp)
-struct vars *v;
-pchr c;
-struct state *lp;
-struct state *rp;
+static void
+onechr(
+    struct vars *v,
+    pchr c,
+    struct state *lp,
+    struct state *rp)
 {
-	if (!(v->cflags&REG_ICASE)) {
-		newarc(v->nfa, PLAIN, subcolor(v->cm, c), lp, rp);
-		return;
-	}
+    if (!(v->cflags&REG_ICASE)) {
+	newarc(v->nfa, PLAIN, subcolor(v->cm, c), lp, rp);
+	return;
+    }
 
-	/* rats, need general case anyway... */
-	dovec(v, allcases(v, c), lp, rp);
-}
+    /*
+     * Rats, need general case anyway...
+     */
 
+    dovec(v, allcases(v, c), lp, rp);
+}
+
 /*
  - dovec - fill in arcs for each element of a cvec
- * This one has to handle the messy cases, like MCCEs and MCCE leaders.
- ^ static VOID dovec(struct vars *, struct cvec *, struct state *,
+ ^ static void dovec(struct vars *, struct cvec *, struct state *,
  ^ 	struct state *);
  */
-static VOID
-dovec(v, cv, lp, rp)
-struct vars *v;
-struct cvec *cv;
-struct state *lp;
-struct state *rp;
+static void
+dovec(
+    struct vars *v,
+    struct cvec *cv,
+    struct state *lp,
+    struct state *rp)
 {
-	chr ch, from, to;
-	celt ce;
-	chr *p;
-	int i;
-	color co;
-	struct cvec *leads;
-	struct arc *a;
-	struct arc *pa;		/* arc in prototype */
-	struct state *s;
-	struct state *ps;	/* state in prototype */
-
-	leads = NULL;
-
-	/* first, get the ordinary characters out of the way */
-	for (p = cv->chrs, i = cv->nchrs; i > 0; p++, i--) {
-		ch = *p;
-		if (!ISCELEADER(v, ch))
-			newarc(v->nfa, PLAIN, subcolor(v->cm, ch), lp, rp);
-		else {
-			assert(singleton(v->cm, ch));
-			assert(leads != NULL);
-			if (!haschr(leads, ch))
-				addchr(leads, ch);
-		}
-	}
-
-	/* and the ranges */
-	for (p = cv->ranges, i = cv->nranges; i > 0; p += 2, i--) {
-		from = *p;
-		to = *(p+1);
-		while (from <= to && (ce = nextleader(v, from, to)) != NOCELT) {
-			if (from < ce)
-				subrange(v, from, ce - 1, lp, rp);
-			assert(singleton(v->cm, ce));
-			assert(leads != NULL);
-			if (!haschr(leads, ce))
-				addchr(leads, ce);
-			from = ce + 1;
-		}
-		if (from <= to)
-			subrange(v, from, to, lp, rp);
+    chr ch, from, to;
+    const chr *p;
+    int i;
+
+    for (p = cv->chrs, i = cv->nchrs; i > 0; p++, i--) {
+	ch = *p;
+	newarc(v->nfa, PLAIN, subcolor(v->cm, ch), lp, rp);
+    }
+
+    for (p = cv->ranges, i = cv->nranges; i > 0; p += 2, i--) {
+	from = *p;
+	to = *(p+1);
+	if (from <= to) {
+	    subrange(v, from, to, lp, rp);
 	}
+    }
 
-	if ((leads == NULL || leads->nchrs == 0) && cv->nmcces == 0)
-		return;
-
-	/* deal with the MCCE leaders */
-	NOTE(REG_ULOCALE);
-	for (p = leads->chrs, i = leads->nchrs; i > 0; p++, i--) {
-		co = GETCOLOR(v->cm, *p);
-		a = findarc(lp, PLAIN, co);
-		if (a != NULL)
-			s = a->to;
-		else {
-			s = newstate(v->nfa);
-			NOERR();
-			newarc(v->nfa, PLAIN, co, lp, s);
-			NOERR();
-		}
-		pa = findarc(v->mccepbegin, PLAIN, co);
-		assert(pa != NULL);
-		ps = pa->to;
-		newarc(v->nfa, '$', 1, s, rp);
-		newarc(v->nfa, '$', 0, s, rp);
-		colorcomplement(v->nfa, v->cm, AHEAD, ps, s, rp);
-		NOERR();
-	}
-
-	/* and the MCCEs */
-	for (i = 0; i < cv->nmcces; i++) {
-		p = cv->mcces[i];
-		assert(singleton(v->cm, *p));
-		if (!singleton(v->cm, *p)) {
-			ERR(REG_ASSERT);
-			return;
-		}
-		ch = *p++;
-		co = GETCOLOR(v->cm, ch);
-		a = findarc(lp, PLAIN, co);
-		if (a != NULL)
-			s = a->to;
-		else {
-			s = newstate(v->nfa);
-			NOERR();
-			newarc(v->nfa, PLAIN, co, lp, s);
-			NOERR();
-		}
-		assert(*p != 0);	/* at least two chars */
-		assert(singleton(v->cm, *p));
-		ch = *p++;
-		co = GETCOLOR(v->cm, ch);
-		assert(*p == 0);	/* and only two, for now */
-		newarc(v->nfa, PLAIN, co, s, rp);
-		NOERR();
-	}
-}
-
-/*
- - nextleader - find next MCCE leader within range
- ^ static celt nextleader(struct vars *, pchr, pchr);
- */
-static celt			/* NOCELT means none */
-nextleader(v, from, to)
-struct vars *v;
-pchr from;
-pchr to;
-{
-	int i;
-	chr *p;
-	chr ch;
-	celt it = NOCELT;
-
-	if (v->mcces == NULL)
-		return it;
-
-	for (i = v->mcces->nchrs, p = v->mcces->chrs; i > 0; i--, p++) {
-		ch = *p;
-		if (from <= ch && ch <= to)
-			if (it == NOCELT || ch < it)
-				it = ch;
-	}
-	return it;
 }
-
+
 /*
  - wordchrs - set up word-chr list for word-boundary stuff, if needed
- * The list is kept as a bunch of arcs between two dummy states; it's
- * disposed of by the unreachable-states sweep in NFA optimization.
- * Does NEXT().  Must not be called from any unusual lexical context.
- * This should be reconciled with the \w etc. handling in lex.c, and
- * should be cleaned up to reduce dependencies on input scanning.
- ^ static VOID wordchrs(struct vars *);
+ * The list is kept as a bunch of arcs between two dummy states; it's disposed
+ * of by the unreachable-states sweep in NFA optimization. Does NEXT(). Must
+ * not be called from any unusual lexical context. This should be reconciled
+ * with the \w etc. handling in lex.c, and should be cleaned up to reduce
+ * dependencies on input scanning.
+ ^ static void wordchrs(struct vars *);
  */
-static VOID
-wordchrs(v)
-struct vars *v;
+static void
+wordchrs(
+    struct vars *v)
 {
-	struct state *left;
-	struct state *right;
+    struct state *left, *right;
 
-	if (v->wordchrs != NULL) {
-		NEXT();		/* for consistency */
-		return;
-	}
+    if (v->wordchrs != NULL) {
+	NEXT();		/* for consistency */
+	return;
+    }
 
-	left = newstate(v->nfa);
-	right = newstate(v->nfa);
-	NOERR();
-	/* fine point:  implemented with [::], and lexer will set REG_ULOCALE */
-	lexword(v);
-	NEXT();
-	assert(v->savenow != NULL && SEE('['));
-	bracket(v, left, right);
-	assert((v->savenow != NULL && SEE(']')) || ISERR());
-	NEXT();
-	NOERR();
-	v->wordchrs = left;
-}
+    left = newstate(v->nfa);
+    right = newstate(v->nfa);
+    NOERR();
 
+    /*
+     * Fine point: implemented with [::], and lexer will set REG_ULOCALE.
+     */
+
+    lexword(v);
+    NEXT();
+    assert(v->savenow != NULL && SEE('['));
+    bracket(v, left, right);
+    assert((v->savenow != NULL && SEE(']')) || ISERR());
+    NEXT();
+    NOERR();
+    v->wordchrs = left;
+}
+
 /*
  - subre - allocate a subre
  ^ static struct subre *subre(struct vars *, int, int, struct state *,
  ^	struct state *);
  */
 static struct subre *
-subre(v, op, flags, begin, end)
-struct vars *v;
-int op;
-int flags;
-struct state *begin;
-struct state *end;
+subre(
+    struct vars *v,
+    int op,
+    int flags,
+    struct state *begin,
+    struct state *end)
 {
-	struct subre *ret;
-
-	ret = v->treefree;
-	if (ret != NULL)
-		v->treefree = ret->left;
-	else {
-		ret = (struct subre *)MALLOC(sizeof(struct subre));
-		if (ret == NULL) {
-			ERR(REG_ESPACE);
-			return NULL;
-		}
-		ret->chain = v->treechain;
-		v->treechain = ret;
+    struct subre *ret = v->treefree;
+
+    if (ret != NULL) {
+	v->treefree = ret->left;
+    } else {
+	ret = (struct subre *) MALLOC(sizeof(struct subre));
+	if (ret == NULL) {
+	    ERR(REG_ESPACE);
+	    return NULL;
 	}
-
-	assert(strchr("|.b(=", op) != NULL);
-
-	ret->op = op;
-	ret->flags = flags;
-	ret->retry = 0;
-	ret->subno = 0;
-	ret->min = ret->max = 1;
-	ret->left = NULL;
-	ret->right = NULL;
-	ret->begin = begin;
-	ret->end = end;
-	ZAPCNFA(ret->cnfa);
-
-	return ret;
+	ret->chain = v->treechain;
+	v->treechain = ret;
+    }
+
+    assert(strchr("|.b(=", op) != NULL);
+
+    ret->op = op;
+    ret->flags = flags;
+    ret->retry = 0;
+    ret->subno = 0;
+    ret->min = ret->max = 1;
+    ret->left = NULL;
+    ret->right = NULL;
+    ret->begin = begin;
+    ret->end = end;
+    ZAPCNFA(ret->cnfa);
+
+    return ret;
 }
-
+
 /*
  - freesubre - free a subRE subtree
- ^ static VOID freesubre(struct vars *, struct subre *);
+ ^ static void freesubre(struct vars *, struct subre *);
  */
-static VOID
-freesubre(v, sr)
-struct vars *v;			/* might be NULL */
-struct subre *sr;
+static void
+freesubre(
+    struct vars *v,		/* might be NULL */
+    struct subre *sr)
 {
-	if (sr == NULL)
-		return;
-
-	if (sr->left != NULL)
-		freesubre(v, sr->left);
-	if (sr->right != NULL)
-		freesubre(v, sr->right);
-
-	freesrnode(v, sr);
+    if (sr == NULL) {
+	return;
+    }
+
+    if (sr->left != NULL) {
+	freesubre(v, sr->left);
+    }
+    if (sr->right != NULL) {
+	freesubre(v, sr->right);
+    }
+
+    freesrnode(v, sr);
 }
-
+
 /*
  - freesrnode - free one node in a subRE subtree
- ^ static VOID freesrnode(struct vars *, struct subre *);
+ ^ static void freesrnode(struct vars *, struct subre *);
  */
-static VOID
-freesrnode(v, sr)
-struct vars *v;			/* might be NULL */
-struct subre *sr;
+static void
+freesrnode(
+    struct vars *v,		/* might be NULL */
+    struct subre *sr)
 {
-	if (sr == NULL)
-		return;
-
-	if (!NULLCNFA(sr->cnfa))
-		freecnfa(&sr->cnfa);
-	sr->flags = 0;
-
-	if (v != NULL) {
-		sr->left = v->treefree;
-		v->treefree = sr;
-	} else
-		FREE(sr);
+    if (sr == NULL) {
+	return;
+    }
+
+    if (!NULLCNFA(sr->cnfa)) {
+	freecnfa(&sr->cnfa);
+    }
+    sr->flags = 0;
+
+    if (v != NULL) {
+	sr->left = v->treefree;
+	v->treefree = sr;
+    } else {
+	FREE(sr);
+    }
 }
-
+
 /*
  - optst - optimize a subRE subtree
- ^ static VOID optst(struct vars *, struct subre *);
+ ^ static void optst(struct vars *, struct subre *);
  */
-static VOID
-optst(v, t)
-struct vars *v;
-struct subre *t;
+static void
+optst(
+    struct vars *v,
+    struct subre *t)
 {
     /*
      * DGP (2007-11-13): I assume it was the programmer's intent to eventually
      * come back and add code to optimize subRE trees, but the routine coded
-     * just spent effort traversing the tree and doing nothing. We can do
+     * just spends effort traversing the tree and doing nothing. We can do
      * nothing with less effort.
      */
 
     return;
 }
-
+
 /*
  - numst - number tree nodes (assigning retry indexes)
  ^ static int numst(struct subre *, int);
  */
 static int			/* next number */
-numst(t, start)
-struct subre *t;
-int start;			/* starting point for subtree numbers */
+numst(
+    struct subre *t,
+    int start)			/* starting point for subtree numbers */
 {
-	int i;
-
-	assert(t != NULL);
-
-	i = start;
-	t->retry = (short)i++;
-	if (t->left != NULL)
-		i = numst(t->left, i);
-	if (t->right != NULL)
-		i = numst(t->right, i);
-	return i;
+    int i;
+
+    assert(t != NULL);
+
+    i = start;
+    t->retry = (short) i++;
+    if (t->left != NULL) {
+	i = numst(t->left, i);
+    }
+    if (t->right != NULL) {
+	i = numst(t->right, i);
+    }
+    return i;
 }
-
+
 /*
  - markst - mark tree nodes as INUSE
- ^ static VOID markst(struct subre *);
+ ^ static void markst(struct subre *);
  */
-static VOID
-markst(t)
-struct subre *t;
+static void
+markst(
+    struct subre *t)
 {
-	assert(t != NULL);
-
-	t->flags |= INUSE;
-	if (t->left != NULL)
-		markst(t->left);
-	if (t->right != NULL)
-		markst(t->right);
+    assert(t != NULL);
+
+    t->flags |= INUSE;
+    if (t->left != NULL) {
+	markst(t->left);
+    }
+    if (t->right != NULL) {
+	markst(t->right);
+    }
 }
-
+
 /*
  - cleanst - free any tree nodes not marked INUSE
- ^ static VOID cleanst(struct vars *);
+ ^ static void cleanst(struct vars *);
  */
-static VOID
-cleanst(v)
-struct vars *v;
+static void
+cleanst(
+    struct vars *v)
 {
-	struct subre *t;
-	struct subre *next;
+    struct subre *t;
+    struct subre *next;
 
-	for (t = v->treechain; t != NULL; t = next) {
-		next = t->chain;
-		if (!(t->flags&INUSE))
-			FREE(t);
+    for (t = v->treechain; t != NULL; t = next) {
+	next = t->chain;
+	if (!(t->flags&INUSE)) {
+	    FREE(t);
 	}
-	v->treechain = NULL;
-	v->treefree = NULL;		/* just on general principles */
+    }
+    v->treechain = NULL;
+    v->treefree = NULL;		/* just on general principles */
 }
-
+
 /*
  - nfatree - turn a subRE subtree into a tree of compacted NFAs
  ^ static long nfatree(struct vars *, struct subre *, FILE *);
  */
 static long			/* optimize results from top node */
-nfatree(v, t, f)
-struct vars *v;
-struct subre *t;
-FILE *f;			/* for debug output */
+nfatree(
+    struct vars *v,
+    struct subre *t,
+    FILE *f)			/* for debug output */
 {
-	assert(t != NULL && t->begin != NULL);
+    assert(t != NULL && t->begin != NULL);
 
-	if (t->left != NULL)
-		(DISCARD)nfatree(v, t->left, f);
-	if (t->right != NULL)
-		(DISCARD)nfatree(v, t->right, f);
+    if (t->left != NULL) {
+	(DISCARD) nfatree(v, t->left, f);
+    }
+    if (t->right != NULL) {
+	(DISCARD) nfatree(v, t->right, f);
+    }
 
-	return nfanode(v, t, f);
+    return nfanode(v, t, f);
 }
-
+
 /*
  - nfanode - do one NFA for nfatree
  ^ static long nfanode(struct vars *, struct subre *, FILE *);
  */
 static long			/* optimize results */
-nfanode(v, t, f)
-struct vars *v;
-struct subre *t;
-FILE *f;			/* for debug output */
+nfanode(
+    struct vars *v,
+    struct subre *t,
+    FILE *f)			/* for debug output */
 {
-	struct nfa *nfa;
-	long ret = 0;
-	char idbuf[50];
-
-	assert(t->begin != NULL);
-
-	if (f != NULL)
-		fprintf(f, "\n\n\n========= TREE NODE %s ==========\n",
-						stid(t, idbuf, sizeof(idbuf)));
-	nfa = newnfa(v, v->cm, v->nfa);
-	NOERRZ();
-	dupnfa(nfa, t->begin, t->end, nfa->init, nfa->final);
-	if (!ISERR()) {
-		specialcolors(nfa);
-		ret = optimize(nfa, f);
-	}
-	if (!ISERR())
-		compact(nfa, &t->cnfa);
-
-	freenfa(nfa);
-	return ret;
+    struct nfa *nfa;
+    long ret = 0;
+    char idbuf[50];
+
+    assert(t->begin != NULL);
+
+    if (f != NULL) {
+	fprintf(f, "\n\n\n========= TREE NODE %s ==========\n",
+		stid(t, idbuf, sizeof(idbuf)));
+    }
+    nfa = newnfa(v, v->cm, v->nfa);
+    NOERRZ();
+    dupnfa(nfa, t->begin, t->end, nfa->init, nfa->final);
+    if (!ISERR()) {
+	specialcolors(nfa);
+	ret = optimize(nfa, f);
+    }
+    if (!ISERR()) {
+	compact(nfa, &t->cnfa);
+    }
+
+    freenfa(nfa);
+    return ret;
 }
-
+
 /*
  - newlacon - allocate a lookahead-constraint subRE
  ^ static int newlacon(struct vars *, struct state *, struct state *, int);
  */
 static int			/* lacon number */
-newlacon(v, begin, end, pos)
-struct vars *v;
-struct state *begin;
-struct state *end;
-int pos;
+newlacon(
+    struct vars *v,
+    struct state *begin,
+    struct state *end,
+    int pos)
 {
-	int n;
-	struct subre *sub;
-
-	if (v->nlacons == 0) {
-		v->lacons = (struct subre *)MALLOC(2 * sizeof(struct subre));
-		n = 1;		/* skip 0th */
-		v->nlacons = 2;
-	} else {
-		v->lacons = (struct subre *)REALLOC(v->lacons,
-					(v->nlacons+1)*sizeof(struct subre));
-		n = v->nlacons++;
-	}
-	if (v->lacons == NULL) {
-		ERR(REG_ESPACE);
-		return 0;
-	}
-	sub = &v->lacons[n];
-	sub->begin = begin;
-	sub->end = end;
-	sub->subno = pos;
-	ZAPCNFA(sub->cnfa);
-	return n;
+    struct subre *sub;
+    int n;
+
+    if (v->nlacons == 0) {
+	v->lacons = (struct subre *) MALLOC(2 * sizeof(struct subre));
+	n = 1;		/* skip 0th */
+	v->nlacons = 2;
+    } else {
+	v->lacons = (struct subre *) REALLOC(v->lacons,
+		(v->nlacons+1)*sizeof(struct subre));
+	n = v->nlacons++;
+    }
+
+    if (v->lacons == NULL) {
+	ERR(REG_ESPACE);
+	return 0;
+    }
+
+    sub = &v->lacons[n];
+    sub->begin = begin;
+    sub->end = end;
+    sub->subno = pos;
+    ZAPCNFA(sub->cnfa);
+    return n;
 }
-
+
 /*
  - freelacons - free lookahead-constraint subRE vector
- ^ static VOID freelacons(struct subre *, int);
+ ^ static void freelacons(struct subre *, int);
  */
-static VOID
-freelacons(subs, n)
-struct subre *subs;
-int n;
+static void
+freelacons(
+    struct subre *subs,
+    int n)
 {
-	struct subre *sub;
-	int i;
-
-	assert(n > 0);
-	for (sub = subs + 1, i = n - 1; i > 0; sub++, i--)	/* no 0th */
-		if (!NULLCNFA(sub->cnfa))
-			freecnfa(&sub->cnfa);
-	FREE(subs);
-}
+    struct subre *sub;
+    int i;
 
+    assert(n > 0);
+    for (sub=subs+1, i=n-1; i>0; sub++, i--) {	/* no 0th */
+	if (!NULLCNFA(sub->cnfa)) {
+	    freecnfa(&sub->cnfa);
+	}
+    }
+    FREE(subs);
+}
+
 /*
  - rfree - free a whole RE (insides of regfree)
- ^ static VOID rfree(regex_t *);
+ ^ static void rfree(regex_t *);
  */
-static VOID
-rfree(re)
-regex_t *re;
+static void
+rfree(
+    regex_t *re)
 {
-	struct guts *g;
-
-	if (re == NULL || re->re_magic != REMAGIC)
-		return;
-
-	re->re_magic = 0;	/* invalidate RE */
-	g = (struct guts *)re->re_guts;
-	re->re_guts = NULL;
-	re->re_fns = NULL;
-	g->magic = 0;
-	freecm(&g->cmap);
-	if (g->tree != NULL)
-		freesubre((struct vars *)NULL, g->tree);
-	if (g->lacons != NULL)
-		freelacons(g->lacons, g->nlacons);
-	if (!NULLCNFA(g->search))
-		freecnfa(&g->search);
-	FREE(g);
+    struct guts *g;
+
+    if (re == NULL || re->re_magic != REMAGIC) {
+	return;
+    }
+
+    re->re_magic = 0;	/* invalidate RE */
+    g = (struct guts *) re->re_guts;
+    re->re_guts = NULL;
+    re->re_fns = NULL;
+    g->magic = 0;
+    freecm(&g->cmap);
+    if (g->tree != NULL) {
+	freesubre(NULL, g->tree);
+    }
+    if (g->lacons != NULL) {
+	freelacons(g->lacons, g->nlacons);
+    }
+    if (!NULLCNFA(g->search)) {
+	freecnfa(&g->search);
+    }
+    FREE(g);
 }
-
+
 /*
  - dump - dump an RE in human-readable form
- ^ static VOID dump(regex_t *, FILE *);
+ ^ static void dump(regex_t *, FILE *);
  */
-static VOID
-dump(re, f)
-regex_t *re;
-FILE *f;
+static void
+dump(
+    regex_t *re,
+    FILE *f)
 {
 #ifdef REG_DEBUG
-	struct guts *g;
-	int i;
-
-	if (re->re_magic != REMAGIC)
-		fprintf(f, "bad magic number (0x%x not 0x%x)\n", re->re_magic,
-								REMAGIC);
-	if (re->re_guts == NULL) {
-		fprintf(f, "NULL guts!!!\n");
-		return;
-	}
-	g = (struct guts *)re->re_guts;
-	if (g->magic != GUTSMAGIC)
-		fprintf(f, "bad guts magic number (0x%x not 0x%x)\n", g->magic,
-								GUTSMAGIC);
-
-	fprintf(f, "\n\n\n========= DUMP ==========\n");
-	fprintf(f, "nsub %d, info 0%lo, csize %d, ntree %d\n",
-		re->re_nsub, re->re_info, re->re_csize, g->ntree);
-
-	dumpcolors(&g->cmap, f);
-	if (!NULLCNFA(g->search)) {
-		printf("\nsearch:\n");
-		dumpcnfa(&g->search, f);
-	}
-	for (i = 1; i < g->nlacons; i++) {
-		fprintf(f, "\nla%d (%s):\n", i,
-				(g->lacons[i].subno) ? "positive" : "negative");
-		dumpcnfa(&g->lacons[i].cnfa, f);
-	}
-	fprintf(f, "\n");
-	dumpst(g->tree, f, 0);
+    struct guts *g;
+    int i;
+
+    if (re->re_magic != REMAGIC) {
+	fprintf(f, "bad magic number (0x%x not 0x%x)\n",
+		re->re_magic, REMAGIC);
+    }
+    if (re->re_guts == NULL) {
+	fprintf(f, "NULL guts!!!\n");
+	return;
+    }
+    g = (struct guts *) re->re_guts;
+    if (g->magic != GUTSMAGIC) {
+	fprintf(f, "bad guts magic number (0x%x not 0x%x)\n",
+		g->magic, GUTSMAGIC);
+    }
+
+    fprintf(f, "\n\n\n========= DUMP ==========\n");
+    fprintf(f, "nsub %d, info 0%lo, csize %d, ntree %d\n",
+	    re->re_nsub, re->re_info, re->re_csize, g->ntree);
+
+    dumpcolors(&g->cmap, f);
+    if (!NULLCNFA(g->search)) {
+	printf("\nsearch:\n");
+	dumpcnfa(&g->search, f);
+    }
+    for (i = 1; i < g->nlacons; i++) {
+	fprintf(f, "\nla%d (%s):\n", i,
+		(g->lacons[i].subno) ? "positive" : "negative");
+	dumpcnfa(&g->lacons[i].cnfa, f);
+    }
+    fprintf(f, "\n");
+    dumpst(g->tree, f, 0);
 #endif
 }
-
+
 /*
  - dumpst - dump a subRE tree
- ^ static VOID dumpst(struct subre *, FILE *, int);
+ ^ static void dumpst(struct subre *, FILE *, int);
  */
-static VOID
-dumpst(t, f, nfapresent)
-struct subre *t;
-FILE *f;
-int nfapresent;			/* is the original NFA still around? */
+static void
+dumpst(
+    struct subre *t,
+    FILE *f,
+    int nfapresent)		/* is the original NFA still around? */
 {
-	if (t == NULL)
-		fprintf(f, "null tree\n");
-	else
-		stdump(t, f, nfapresent);
-	fflush(f);
+    if (t == NULL) {
+	fprintf(f, "null tree\n");
+    } else {
+	stdump(t, f, nfapresent);
+    }
+    fflush(f);
 }
-
+
 /*
  - stdump - recursive guts of dumpst
- ^ static VOID stdump(struct subre *, FILE *, int);
+ ^ static void stdump(struct subre *, FILE *, int);
  */
-static VOID
-stdump(t, f, nfapresent)
-struct subre *t;
-FILE *f;
-int nfapresent;			/* is the original NFA still around? */
+static void
+stdump(
+    struct subre *t,
+    FILE *f,
+    int nfapresent)		/* is the original NFA still around? */
 {
-	char idbuf[50];
-
-	fprintf(f, "%s. `%c'", stid(t, idbuf, sizeof(idbuf)), t->op);
-	if (t->flags&LONGER)
-		fprintf(f, " longest");
-	if (t->flags&SHORTER)
-		fprintf(f, " shortest");
-	if (t->flags&MIXED)
-		fprintf(f, " hasmixed");
-	if (t->flags&CAP)
-		fprintf(f, " hascapture");
-	if (t->flags&BACKR)
-		fprintf(f, " hasbackref");
-	if (!(t->flags&INUSE))
-		fprintf(f, " UNUSED");
-	if (t->subno != 0)
-		fprintf(f, " (#%d)", t->subno);
-	if (t->min != 1 || t->max != 1) {
-		fprintf(f, " {%d,", t->min);
-		if (t->max != INFINITY)
-			fprintf(f, "%d", t->max);
-		fprintf(f, "}");
-	}
-	if (nfapresent)
-		fprintf(f, " %ld-%ld", (long)t->begin->no, (long)t->end->no);
-	if (t->left != NULL)
-		fprintf(f, " L:%s", stid(t->left, idbuf, sizeof(idbuf)));
-	if (t->right != NULL)
-		fprintf(f, " R:%s", stid(t->right, idbuf, sizeof(idbuf)));
-	if (!NULLCNFA(t->cnfa)) {
-		fprintf(f, "\n");
-		dumpcnfa(&t->cnfa, f);
+    char idbuf[50];
+
+    fprintf(f, "%s. `%c'", stid(t, idbuf, sizeof(idbuf)), t->op);
+    if (t->flags&LONGER) {
+	fprintf(f, " longest");
+    }
+    if (t->flags&SHORTER) {
+	fprintf(f, " shortest");
+    }
+    if (t->flags&MIXED) {
+	fprintf(f, " hasmixed");
+    }
+    if (t->flags&CAP) {
+	fprintf(f, " hascapture");
+    }
+    if (t->flags&BACKR) {
+	fprintf(f, " hasbackref");
+    }
+    if (!(t->flags&INUSE)) {
+	fprintf(f, " UNUSED");
+    }
+    if (t->subno != 0) {
+	fprintf(f, " (#%d)", t->subno);
+    }
+    if (t->min != 1 || t->max != 1) {
+	fprintf(f, " {%d,", t->min);
+	if (t->max != INFINITY) {
+	    fprintf(f, "%d", t->max);
 	}
+	fprintf(f, "}");
+    }
+    if (nfapresent) {
+	fprintf(f, " %ld-%ld", (long)t->begin->no, (long)t->end->no);
+    }
+    if (t->left != NULL) {
+	fprintf(f, " L:%s", stid(t->left, idbuf, sizeof(idbuf)));
+    }
+    if (t->right != NULL) {
+	fprintf(f, " R:%s", stid(t->right, idbuf, sizeof(idbuf)));
+    }
+    if (!NULLCNFA(t->cnfa)) {
 	fprintf(f, "\n");
-	if (t->left != NULL)
-		stdump(t->left, f, nfapresent);
-	if (t->right != NULL)
-		stdump(t->right, f, nfapresent);
+	dumpcnfa(&t->cnfa, f);
+    }
+    fprintf(f, "\n");
+    if (t->left != NULL) {
+	stdump(t->left, f, nfapresent);
+    }
+    if (t->right != NULL) {
+	stdump(t->right, f, nfapresent);
+    }
 }
-
+
 /*
  - stid - identify a subtree node for dumping
- ^ static char *stid(struct subre *, char *, size_t);
+ ^ static const char *stid(struct subre *, char *, size_t);
  */
-static char *			/* points to buf or constant string */
-stid(t, buf, bufsize)
-struct subre *t;
-char *buf;
-size_t bufsize;
+static const char *			/* points to buf or constant string */
+stid(
+    struct subre *t,
+    char *buf,
+    size_t bufsize)
 {
-	/* big enough for hex int or decimal t->retry? */
-	if (bufsize < sizeof(void*)*2 + 3 || bufsize < sizeof(t->retry)*3 + 1)
-		return "unable";
-	if (t->retry != 0)
-		sprintf(buf, "%d", t->retry);
-	else
-		sprintf(buf, "%p", t);
-	return buf;
+    /*
+     * Big enough for hex int or decimal t->retry?
+     */
+
+    if (bufsize < sizeof(void*)*2 + 3 || bufsize < sizeof(t->retry)*3 + 1) {
+	return "unable";
+    }
+    if (t->retry != 0) {
+	sprintf(buf, "%d", t->retry);
+    } else {
+	sprintf(buf, "%p", t);
+    }
+    return buf;
 }
 
 #include "regc_lex.c"
@@ -2110,3 +2161,11 @@ size_t bufsize;
 #include "regc_nfa.c"
 #include "regc_cvec.c"
 #include "regc_locale.c"
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regcustom.h b/generic/regcustom.h
index 5b6815c..57a2d47 100644
--- a/generic/regcustom.h
+++ b/generic/regcustom.h
@@ -1,22 +1,22 @@
 /*
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
- * Redistribution and use in source and binary forms -- with or without
- * modification -- are permitted for any purpose, provided that
- * redistributions in source form retain this entire copyright notice and
- * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ * Corporation, none of whom are responsible for the results. The author
+ * thanks all of them.
+ *
+ * Redistribution and use in source and binary forms - with or without
+ * modification - are permitted for any purpose, provided that redistributions
+ * in source form retain this entire copyright notice and indicate the origin
+ * and nature of any modifications.
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
@@ -26,23 +26,28 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-/* headers if any */
+/*
+ * Headers if any.
+ */
+
 #include "tclInt.h"
 
-/* overrides for regguts.h definitions, if any */
-#define	FUNCPTR(name, args)	(*name) _ANSI_ARGS_(args)
+/*
+ * Overrides for regguts.h definitions, if any.
+ */
+
+#define	FUNCPTR(name, args)	(*name)args
 #define	MALLOC(n)		ckalloc(n)
 #define	FREE(p)			ckfree(VS(p))
 #define	REALLOC(p,n)		ckrealloc(VS(p),n)
 
-
-
 /*
- * Do not insert extras between the "begin" and "end" lines -- this
- * chunk is automatically extracted to be fitted into regex.h.
+ * Do not insert extras between the "begin" and "end" lines - this chunk is
+ * automatically extracted to be fitted into regex.h.
  */
+
 /* --- begin --- */
-/* ensure certain things don't sneak in from system headers */
+/* Ensure certain things don't sneak in from system headers. */
 #ifdef __REG_WIDE_T
 #undef __REG_WIDE_T
 #endif
@@ -67,54 +72,90 @@
 #ifdef __REG_NOCHAR
 #undef __REG_NOCHAR
 #endif
-/* interface types */
+/* Interface types */
 #define	__REG_WIDE_T	Tcl_UniChar
-#define	__REG_REGOFF_T	long	/* not really right, but good enough... */
-#define	__REG_VOID_T	VOID
-#define	__REG_CONST	CONST
-/* names and declarations */
+#define	__REG_REGOFF_T	long	/* Not really right, but good enough... */
+#define	__REG_VOID_T	void
+#define	__REG_CONST	const
+/* Names and declarations */
 #define	__REG_WIDE_COMPILE	TclReComp
 #define	__REG_WIDE_EXEC		TclReExec
-#define	__REG_NOFRONT		/* don't want regcomp() and regexec() */
-#define	__REG_NOCHAR		/* or the char versions */
+#define	__REG_NOFRONT		/* Don't want regcomp() and regexec() */
+#define	__REG_NOCHAR		/* Or the char versions */
 #define	regfree		TclReFree
 #define	regerror	TclReError
 /* --- end --- */
 
+/*
+ * Internal character type and related.
+ */
 
-
-/* internal character type and related */
-typedef Tcl_UniChar chr;	/* the type itself */
-typedef int pchr;		/* what it promotes to */
-typedef unsigned uchr;		/* unsigned type that will hold a chr */
-typedef int celt;		/* type to hold chr, MCCE number, or NOCELT */
-#define	NOCELT	(-1)		/* celt value which is not valid chr or MCCE */
-#define	CHR(c)	(UCHAR(c))	/* turn char literal into chr literal */
-#define	DIGITVAL(c)	((c)-'0')	/* turn chr digit into its value */
+typedef Tcl_UniChar chr;	/* The type itself. */
+typedef int pchr;		/* What it promotes to. */
+typedef unsigned uchr;		/* Unsigned type that will hold a chr. */
+typedef int celt;		/* Type to hold chr, or NOCELT */
+#define	NOCELT (-1)		/* Celt value which is not valid chr */
+#define	CHR(c) (UCHAR(c))	/* Turn char literal into chr literal */
+#define	DIGITVAL(c) ((c)-'0')	/* Turn chr digit into its value */
 #if TCL_UTF_MAX > 4
-#define	CHRBITS	32		/* bits in a chr; must not use sizeof */
-#define	CHR_MIN	0x00000000	/* smallest and largest chr; the value */
-#define	CHR_MAX	0xffffffff	/*  CHR_MAX-CHR_MIN+1 should fit in uchr */
+#define	CHRBITS	32		/* Bits in a chr; must not use sizeof */
+#define	CHR_MIN	0x00000000	/* Smallest and largest chr; the value */
+#define	CHR_MAX	0xffffffff	/* CHR_MAX-CHR_MIN+1 should fit in uchr */
 #else
-#define	CHRBITS	16		/* bits in a chr; must not use sizeof */
-#define	CHR_MIN	0x0000		/* smallest and largest chr; the value */
-#define	CHR_MAX	0xffff		/*  CHR_MAX-CHR_MIN+1 should fit in uchr */
+#define	CHRBITS	16		/* Bits in a chr; must not use sizeof */
+#define	CHR_MIN	0x0000		/* Smallest and largest chr; the value */
+#define	CHR_MAX	0xffff		/* CHR_MAX-CHR_MIN+1 should fit in uchr */
 #endif
 
-/* functions operating on chr */
+/*
+ * Functions operating on chr.
+ */
+
 #define	iscalnum(x)	Tcl_UniCharIsAlnum(x)
 #define	iscalpha(x)	Tcl_UniCharIsAlpha(x)
 #define	iscdigit(x)	Tcl_UniCharIsDigit(x)
 #define	iscspace(x)	Tcl_UniCharIsSpace(x)
 
-/* name the external functions */
+/*
+ * Name the external functions.
+ */
+
 #define	compile		TclReComp
 #define	exec		TclReExec
 
-/* enable/disable debugging code (by whether REG_DEBUG is defined or not) */
-#if 0		/* no debug unless requested by makefile */
+/*
+& Enable/disable debugging code (by whether REG_DEBUG is defined or not).
+*/
+
+#if 0				/* No debug unless requested by makefile. */
 #define	REG_DEBUG	/* */
 #endif
 
-/* and pick up the standard header */
+/*
+ * Method of allocating a local workspace. We used a thread-specific data
+ * space to store this because the regular expression engine is never
+ * reentered from the same thread; it doesn't make any callbacks.
+ */
+
+#if 1
+#define AllocVars(vPtr) \
+    static Tcl_ThreadDataKey varsKey; \
+    register struct vars *vPtr = (struct vars *) \
+	    Tcl_GetThreadData(&varsKey, sizeof(struct vars))
+#else
+/*
+ * This strategy for allocating workspace is "more proper" in some sense, but
+ * quite a bit slower. Using TSD (as above) leads to code that is quite a bit
+ * faster in practice (measured!)
+ */
+#define AllocVars(vPtr) \
+    register struct vars *vPtr = (struct vars *) MALLOC(sizeof(struct vars))
+#define FreeVars(vPtr) \
+    FREE(vPtr)
+#endif
+
+/*
+ * And pick up the standard header.
+ */
+
 #include "regex.h"
diff --git a/generic/rege_dfa.c b/generic/rege_dfa.c
index bc391fd..e233680 100644
--- a/generic/rege_dfa.c
+++ b/generic/rege_dfa.c
@@ -3,20 +3,20 @@
  * This file is #included by regexec.c.
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
+ *
  * I'd appreciate being given credit for this package in the documentation
  * of software which uses it, but that is not a requirement.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -29,521 +29,620 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
-
+
 /*
  - longest - longest-preferred matching engine
  ^ static chr *longest(struct vars *, struct dfa *, chr *, chr *, int *);
  */
 static chr *			/* endpoint, or NULL */
-longest(v, d, start, stop, hitstopp)
-struct vars *v;			/* used only for debug and exec flags */
-struct dfa *d;
-chr *start;			/* where the match should start */
-chr *stop;			/* match must end at or before here */
-int *hitstopp;			/* record whether hit v->stop, if non-NULL */
+longest(
+    struct vars *v,		/* used only for debug and exec flags */
+    struct dfa *d,
+    chr *start,			/* where the match should start */
+    chr *stop,			/* match must end at or before here */
+    int *hitstopp)		/* record whether hit v->stop, if non-NULL */
 {
-	chr *cp;
-	chr *realstop = (stop == v->stop) ? stop : stop + 1;
-	color co;
-	struct sset *css;
-	struct sset *ss;
-	chr *post;
-	int i;
-	struct colormap *cm = d->cm;
-
-	/* initialize */
-	css = initialize(v, d, start);
-	cp = start;
-	if (hitstopp != NULL)
-		*hitstopp = 0;
-
-	/* startup */
-	FDEBUG(("+++ startup +++\n"));
-	if (cp == v->start) {
-		co = d->cnfa->bos[(v->eflags&REG_NOTBOL) ? 0 : 1];
-		FDEBUG(("color %ld\n", (long)co));
-	} else {
-		co = GETCOLOR(cm, *(cp - 1));
-		FDEBUG(("char %c, color %ld\n", (char)*(cp-1), (long)co));
-	}
-	css = miss(v, d, css, co, cp, start);
-	if (css == NULL)
-		return NULL;
-	css->lastseen = cp;
-
-	/* main loop */
-	if (v->eflags&REG_FTRACE)
-		while (cp < realstop) {
-			FDEBUG(("+++ at c%d +++\n", css - d->ssets));
-			co = GETCOLOR(cm, *cp);
-			FDEBUG(("char %c, color %ld\n", (char)*cp, (long)co));
-			ss = css->outs[co];
-			if (ss == NULL) {
-				ss = miss(v, d, css, co, cp+1, start);
-				if (ss == NULL)
-					break;	/* NOTE BREAK OUT */
-			}
-			cp++;
-			ss->lastseen = cp;
-			css = ss;
+    chr *cp;
+    chr *realstop = (stop == v->stop) ? stop : stop + 1;
+    color co;
+    struct sset *css;
+    struct sset *ss;
+    chr *post;
+    int i;
+    struct colormap *cm = d->cm;
+
+    /*
+     * Initialize.
+     */
+
+    css = initialize(v, d, start);
+    cp = start;
+    if (hitstopp != NULL) {
+	*hitstopp = 0;
+    }
+
+    /*
+     * Startup.
+     */
+
+    FDEBUG(("+++ startup +++\n"));
+    if (cp == v->start) {
+	co = d->cnfa->bos[(v->eflags&REG_NOTBOL) ? 0 : 1];
+	FDEBUG(("color %ld\n", (long)co));
+    } else {
+	co = GETCOLOR(cm, *(cp - 1));
+	FDEBUG(("char %c, color %ld\n", (char)*(cp-1), (long)co));
+    }
+    css = miss(v, d, css, co, cp, start);
+    if (css == NULL) {
+	return NULL;
+    }
+    css->lastseen = cp;
+
+    /*
+     * Main loop.
+     */
+
+    if (v->eflags&REG_FTRACE) {
+	while (cp < realstop) {
+	    FDEBUG(("+++ at c%d +++\n", css - d->ssets));
+	    co = GETCOLOR(cm, *cp);
+	    FDEBUG(("char %c, color %ld\n", (char)*cp, (long)co));
+	    ss = css->outs[co];
+	    if (ss == NULL) {
+		ss = miss(v, d, css, co, cp+1, start);
+		if (ss == NULL) {
+		    break;	/* NOTE BREAK OUT */
 		}
-	else
-		while (cp < realstop) {
-			co = GETCOLOR(cm, *cp);
-			ss = css->outs[co];
-			if (ss == NULL) {
-				ss = miss(v, d, css, co, cp+1, start);
-				if (ss == NULL)
-					break;	/* NOTE BREAK OUT */
-			}
-			cp++;
-			ss->lastseen = cp;
-			css = ss;
+	    }
+	    cp++;
+	    ss->lastseen = cp;
+	    css = ss;
+	}
+    } else {
+	while (cp < realstop) {
+	    co = GETCOLOR(cm, *cp);
+	    ss = css->outs[co];
+	    if (ss == NULL) {
+		ss = miss(v, d, css, co, cp+1, start);
+		if (ss == NULL) {
+		    break;	/* NOTE BREAK OUT */
 		}
+	    }
+	    cp++;
+	    ss->lastseen = cp;
+	    css = ss;
+	}
+    }
 
-	/* shutdown */
-	FDEBUG(("+++ shutdown at c%d +++\n", css - d->ssets));
-	if (cp == v->stop && stop == v->stop) {
-		if (hitstopp != NULL)
-			*hitstopp = 1;
-		co = d->cnfa->eos[(v->eflags&REG_NOTEOL) ? 0 : 1];
-		FDEBUG(("color %ld\n", (long)co));
-		ss = miss(v, d, css, co, cp, start);
-		/* special case:  match ended at eol? */
-		if (ss != NULL && (ss->flags&POSTSTATE))
-			return cp;
-		else if (ss != NULL)
-			ss->lastseen = cp;	/* to be tidy */
+    /*
+     * Shutdown.
+     */
+
+    FDEBUG(("+++ shutdown at c%d +++\n", css - d->ssets));
+    if (cp == v->stop && stop == v->stop) {
+	if (hitstopp != NULL) {
+	    *hitstopp = 1;
+	}
+	co = d->cnfa->eos[(v->eflags&REG_NOTEOL) ? 0 : 1];
+	FDEBUG(("color %ld\n", (long)co));
+	ss = miss(v, d, css, co, cp, start);
+
+	/*
+	 * Special case: match ended at eol?
+	 */
+
+	if (ss != NULL && (ss->flags&POSTSTATE)) {
+	    return cp;
+	} else if (ss != NULL) {
+	    ss->lastseen = cp;	/* to be tidy */
 	}
+    }
 
-	/* find last match, if any */
-	post = d->lastpost;
-	for (ss = d->ssets, i = d->nssused; i > 0; ss++, i--)
-		if ((ss->flags&POSTSTATE) && post != ss->lastseen &&
-					(post == NULL || post < ss->lastseen))
-			post = ss->lastseen;
-	if (post != NULL)		/* found one */
-		return post - 1;
+    /*
+     * Find last match, if any.
+     */
 
-	return NULL;
-}
+    post = d->lastpost;
+    for (ss = d->ssets, i = d->nssused; i > 0; ss++, i--) {
+	if ((ss->flags&POSTSTATE) && (post != ss->lastseen) &&
+		(post == NULL || post < ss->lastseen)) {
+	    post = ss->lastseen;
+	}
+    }
+    if (post != NULL) {		/* found one */
+	return post - 1;
+    }
 
+    return NULL;
+}
+
 /*
  - shortest - shortest-preferred matching engine
  ^ static chr *shortest(struct vars *, struct dfa *, chr *, chr *, chr *,
  ^ 	chr **, int *);
  */
 static chr *			/* endpoint, or NULL */
-shortest(v, d, start, min, max, coldp, hitstopp)
-struct vars *v;
-struct dfa *d;
-chr *start;			/* where the match should start */
-chr *min;			/* match must end at or after here */
-chr *max;			/* match must end at or before here */
-chr **coldp;			/* store coldstart pointer here, if nonNULL */
-int *hitstopp;			/* record whether hit v->stop, if non-NULL */
+shortest(
+    struct vars *v,
+    struct dfa *d,
+    chr *start,			/* where the match should start */
+    chr *min,			/* match must end at or after here */
+    chr *max,			/* match must end at or before here */
+    chr **coldp,		/* store coldstart pointer here, if nonNULL */
+    int *hitstopp)		/* record whether hit v->stop, if non-NULL */
 {
-	chr *cp;
-	chr *realmin = (min == v->stop) ? min : min + 1;
-	chr *realmax = (max == v->stop) ? max : max + 1;
-	color co;
-	struct sset *css;
-	struct sset *ss;
-	struct colormap *cm = d->cm;
-
-	/* initialize */
-	css = initialize(v, d, start);
-	cp = start;
-	if (hitstopp != NULL)
-		*hitstopp = 0;
-
-	/* startup */
-	FDEBUG(("--- startup ---\n"));
-	if (cp == v->start) {
-		co = d->cnfa->bos[(v->eflags&REG_NOTBOL) ? 0 : 1];
-		FDEBUG(("color %ld\n", (long)co));
-	} else {
-		co = GETCOLOR(cm, *(cp - 1));
-		FDEBUG(("char %c, color %ld\n", (char)*(cp-1), (long)co));
-	}
-	css = miss(v, d, css, co, cp, start);
-	if (css == NULL)
-		return NULL;
-	css->lastseen = cp;
-	ss = css;
-
-	/* main loop */
-	if (v->eflags&REG_FTRACE)
-		while (cp < realmax) {
-			FDEBUG(("--- at c%d ---\n", css - d->ssets));
-			co = GETCOLOR(cm, *cp);
-			FDEBUG(("char %c, color %ld\n", (char)*cp, (long)co));
-			ss = css->outs[co];
-			if (ss == NULL) {
-				ss = miss(v, d, css, co, cp+1, start);
-				if (ss == NULL)
-					break;	/* NOTE BREAK OUT */
-			}
-			cp++;
-			ss->lastseen = cp;
-			css = ss;
-			if ((ss->flags&POSTSTATE) && cp >= realmin)
-				break;		/* NOTE BREAK OUT */
+    chr *cp;
+    chr *realmin = (min == v->stop) ? min : min + 1;
+    chr *realmax = (max == v->stop) ? max : max + 1;
+    color co;
+    struct sset *css;
+    struct sset *ss;
+    struct colormap *cm = d->cm;
+
+    /*
+     * Initialize.
+     */
+
+    css = initialize(v, d, start);
+    cp = start;
+    if (hitstopp != NULL) {
+	*hitstopp = 0;
+    }
+
+    /*
+     * Startup.
+     */
+
+    FDEBUG(("--- startup ---\n"));
+    if (cp == v->start) {
+	co = d->cnfa->bos[(v->eflags&REG_NOTBOL) ? 0 : 1];
+	FDEBUG(("color %ld\n", (long)co));
+    } else {
+	co = GETCOLOR(cm, *(cp - 1));
+	FDEBUG(("char %c, color %ld\n", (char)*(cp-1), (long)co));
+    }
+    css = miss(v, d, css, co, cp, start);
+    if (css == NULL) {
+	return NULL;
+    }
+    css->lastseen = cp;
+    ss = css;
+
+    /*
+     * Main loop.
+     */
+
+    if (v->eflags&REG_FTRACE) {
+	while (cp < realmax) {
+	    FDEBUG(("--- at c%d ---\n", css - d->ssets));
+	    co = GETCOLOR(cm, *cp);
+	    FDEBUG(("char %c, color %ld\n", (char)*cp, (long)co));
+	    ss = css->outs[co];
+	    if (ss == NULL) {
+		ss = miss(v, d, css, co, cp+1, start);
+		if (ss == NULL) {
+		    break;	/* NOTE BREAK OUT */
 		}
-	else
-		while (cp < realmax) {
-			co = GETCOLOR(cm, *cp);
-			ss = css->outs[co];
-			if (ss == NULL) {
-				ss = miss(v, d, css, co, cp+1, start);
-				if (ss == NULL)
-					break;	/* NOTE BREAK OUT */
-			}
-			cp++;
-			ss->lastseen = cp;
-			css = ss;
-			if ((ss->flags&POSTSTATE) && cp >= realmin)
-				break;		/* NOTE BREAK OUT */
+	    }
+	    cp++;
+	    ss->lastseen = cp;
+	    css = ss;
+	    if ((ss->flags&POSTSTATE) && cp >= realmin) {
+		break;		/* NOTE BREAK OUT */
+	    }
+	}
+    } else {
+	while (cp < realmax) {
+	    co = GETCOLOR(cm, *cp);
+	    ss = css->outs[co];
+	    if (ss == NULL) {
+		ss = miss(v, d, css, co, cp+1, start);
+		if (ss == NULL) {
+		    break;	/* NOTE BREAK OUT */
 		}
+	    }
+	    cp++;
+	    ss->lastseen = cp;
+	    css = ss;
+	    if ((ss->flags&POSTSTATE) && cp >= realmin) {
+		break;		/* NOTE BREAK OUT */
+	    }
+	}
+    }
 
-	if (ss == NULL)
-		return NULL;
-
-	if (coldp != NULL)	/* report last no-progress state set, if any */
-		*coldp = lastcold(v, d);
-
-	if ((ss->flags&POSTSTATE) && cp > min) {
-		assert(cp >= realmin);
-		cp--;
-	} else if (cp == v->stop && max == v->stop) {
-		co = d->cnfa->eos[(v->eflags&REG_NOTEOL) ? 0 : 1];
-		FDEBUG(("color %ld\n", (long)co));
-		ss = miss(v, d, css, co, cp, start);
-		/* match might have ended at eol */
-		if ((ss == NULL || !(ss->flags&POSTSTATE)) && hitstopp != NULL)
-			*hitstopp = 1;
+    if (ss == NULL) {
+	return NULL;
+    }
+
+    if (coldp != NULL) {	/* report last no-progress state set, if any */
+	*coldp = lastcold(v, d);
+    }
+
+    if ((ss->flags&POSTSTATE) && cp > min) {
+	assert(cp >= realmin);
+	cp--;
+    } else if (cp == v->stop && max == v->stop) {
+	co = d->cnfa->eos[(v->eflags&REG_NOTEOL) ? 0 : 1];
+	FDEBUG(("color %ld\n", (long)co));
+	ss = miss(v, d, css, co, cp, start);
+
+	/*
+	 * Match might have ended at eol.
+	 */
+
+	if ((ss == NULL || !(ss->flags&POSTSTATE)) && hitstopp != NULL) {
+	    *hitstopp = 1;
 	}
+    }
 
-	if (ss == NULL || !(ss->flags&POSTSTATE))
-		return NULL;
+    if (ss == NULL || !(ss->flags&POSTSTATE)) {
+	return NULL;
+    }
 
-	return cp;
+    return cp;
 }
-
+
 /*
  - lastcold - determine last point at which no progress had been made
  ^ static chr *lastcold(struct vars *, struct dfa *);
  */
 static chr *			/* endpoint, or NULL */
-lastcold(v, d)
-struct vars *v;
-struct dfa *d;
+lastcold(
+    struct vars *v,
+    struct dfa *d)
 {
-	struct sset *ss;
-	chr *nopr;
-	int i;
-
-	nopr = d->lastnopr;
-	if (nopr == NULL)
-		nopr = v->start;
-	for (ss = d->ssets, i = d->nssused; i > 0; ss++, i--)
-		if ((ss->flags&NOPROGRESS) && nopr < ss->lastseen)
-			nopr = ss->lastseen;
-	return nopr;
+    struct sset *ss;
+    chr *nopr;
+    int i;
+
+    nopr = d->lastnopr;
+    if (nopr == NULL) {
+	nopr = v->start;
+    }
+    for (ss = d->ssets, i = d->nssused; i > 0; ss++, i--) {
+	if ((ss->flags&NOPROGRESS) && nopr < ss->lastseen) {
+	    nopr = ss->lastseen;
+	}
+    }
+    return nopr;
 }
-
+
 /*
  - newdfa - set up a fresh DFA
  ^ static struct dfa *newdfa(struct vars *, struct cnfa *,
  ^ 	struct colormap *, struct smalldfa *);
  */
 static struct dfa *
-newdfa(v, cnfa, cm, small)
-struct vars *v;
-struct cnfa *cnfa;
-struct colormap *cm;
-struct smalldfa *small;		/* preallocated space, may be NULL */
+newdfa(
+    struct vars *v,
+    struct cnfa *cnfa,
+    struct colormap *cm,
+    struct smalldfa *sml)	/* preallocated space, may be NULL */
 {
-	struct dfa *d;
-	size_t nss = cnfa->nstates * 2;
-	int wordsper = (cnfa->nstates + UBITS - 1) / UBITS;
-	struct smalldfa *smallwas = small;
-
-	assert(cnfa != NULL && cnfa->nstates != 0);
-
-	if (nss <= FEWSTATES && cnfa->ncolors <= FEWCOLORS) {
-		assert(wordsper == 1);
-		if (small == NULL) {
-			small = (struct smalldfa *)MALLOC(
-						sizeof(struct smalldfa));
-			if (small == NULL) {
-				ERR(REG_ESPACE);
-				return NULL;
-			}
-		}
-		d = &small->dfa;
-		d->ssets = small->ssets;
-		d->statesarea = small->statesarea;
-		d->work = &d->statesarea[nss];
-		d->outsarea = small->outsarea;
-		d->incarea = small->incarea;
-		d->cptsmalloced = 0;
-		d->mallocarea = (smallwas == NULL) ? (char *)small : NULL;
-	} else {
-		d = (struct dfa *)MALLOC(sizeof(struct dfa));
-		if (d == NULL) {
-			ERR(REG_ESPACE);
-			return NULL;
-		}
-		d->ssets = (struct sset *)MALLOC(nss * sizeof(struct sset));
-		d->statesarea = (unsigned *)MALLOC((nss+WORK) * wordsper *
-							sizeof(unsigned));
-		d->work = &d->statesarea[nss * wordsper];
-		d->outsarea = (struct sset **)MALLOC(nss * cnfa->ncolors *
-							sizeof(struct sset *));
-		d->incarea = (struct arcp *)MALLOC(nss * cnfa->ncolors *
-							sizeof(struct arcp));
-		d->cptsmalloced = 1;
-		d->mallocarea = (char *)d;
-		if (d->ssets == NULL || d->statesarea == NULL ||
-				d->outsarea == NULL || d->incarea == NULL) {
-			freedfa(d);
-			ERR(REG_ESPACE);
-			return NULL;
-		}
+    struct dfa *d;
+    size_t nss = cnfa->nstates * 2;
+    int wordsper = (cnfa->nstates + UBITS - 1) / UBITS;
+    struct smalldfa *smallwas = sml;
+
+    assert(cnfa != NULL && cnfa->nstates != 0);
+
+    if (nss <= FEWSTATES && cnfa->ncolors <= FEWCOLORS) {
+	assert(wordsper == 1);
+	if (sml == NULL) {
+	    sml = (struct smalldfa *) MALLOC(sizeof(struct smalldfa));
+	    if (sml == NULL) {
+		ERR(REG_ESPACE);
+		return NULL;
+	    }
 	}
-
-	d->nssets = (v->eflags&REG_SMALL) ? 7 : nss;
-	d->nssused = 0;
-	d->nstates = cnfa->nstates;
-	d->ncolors = cnfa->ncolors;
-	d->wordsper = wordsper;
-	d->cnfa = cnfa;
-	d->cm = cm;
-	d->lastpost = NULL;
-	d->lastnopr = NULL;
-	d->search = d->ssets;
-
-	/* initialization of sset fields is done as needed */
-
-	return d;
+	d = &sml->dfa;
+	d->ssets = sml->ssets;
+	d->statesarea = sml->statesarea;
+	d->work = &d->statesarea[nss];
+	d->outsarea = sml->outsarea;
+	d->incarea = sml->incarea;
+	d->cptsmalloced = 0;
+	d->mallocarea = (smallwas == NULL) ? (char *)sml : NULL;
+    } else {
+	d = (struct dfa *)MALLOC(sizeof(struct dfa));
+	if (d == NULL) {
+	    ERR(REG_ESPACE);
+	    return NULL;
+	}
+	d->ssets = (struct sset *)MALLOC(nss * sizeof(struct sset));
+	d->statesarea = (unsigned *)
+		MALLOC((nss+WORK) * wordsper * sizeof(unsigned));
+	d->work = &d->statesarea[nss * wordsper];
+	d->outsarea = (struct sset **)
+		MALLOC(nss * cnfa->ncolors * sizeof(struct sset *));
+	d->incarea = (struct arcp *)
+		MALLOC(nss * cnfa->ncolors * sizeof(struct arcp));
+	d->cptsmalloced = 1;
+	d->mallocarea = (char *)d;
+	if (d->ssets == NULL || d->statesarea == NULL ||
+		d->outsarea == NULL || d->incarea == NULL) {
+	    freedfa(d);
+	    ERR(REG_ESPACE);
+	    return NULL;
+	}
+    }
+
+    d->nssets = (v->eflags&REG_SMALL) ? 7 : nss;
+    d->nssused = 0;
+    d->nstates = cnfa->nstates;
+    d->ncolors = cnfa->ncolors;
+    d->wordsper = wordsper;
+    d->cnfa = cnfa;
+    d->cm = cm;
+    d->lastpost = NULL;
+    d->lastnopr = NULL;
+    d->search = d->ssets;
+
+    /*
+     * Initialization of sset fields is done as needed.
+     */
+
+    return d;
 }
-
+
 /*
  - freedfa - free a DFA
- ^ static VOID freedfa(struct dfa *);
+ ^ static void freedfa(struct dfa *);
  */
-static VOID
-freedfa(d)
-struct dfa *d;
+static void
+freedfa(
+    struct dfa *d)
 {
-	if (d->cptsmalloced) {
-		if (d->ssets != NULL)
-			FREE(d->ssets);
-		if (d->statesarea != NULL)
-			FREE(d->statesarea);
-		if (d->outsarea != NULL)
-			FREE(d->outsarea);
-		if (d->incarea != NULL)
-			FREE(d->incarea);
+    if (d->cptsmalloced) {
+	if (d->ssets != NULL) {
+	    FREE(d->ssets);
+	}
+	if (d->statesarea != NULL) {
+	    FREE(d->statesarea);
+	}
+	if (d->outsarea != NULL) {
+	    FREE(d->outsarea);
 	}
+	if (d->incarea != NULL) {
+	    FREE(d->incarea);
+	}
+    }
 
-	if (d->mallocarea != NULL)
-		FREE(d->mallocarea);
+    if (d->mallocarea != NULL) {
+	FREE(d->mallocarea);
+    }
 }
-
+
 /*
  - hash - construct a hash code for a bitvector
  * There are probably better ways, but they're more expensive.
  ^ static unsigned hash(unsigned *, int);
  */
 static unsigned
-hash(uv, n)
-unsigned *uv;
-int n;
+hash(
+    unsigned *uv,
+    int n)
 {
-	int i;
-	unsigned h;
-
-	h = 0;
-	for (i = 0; i < n; i++)
-		h ^= uv[i];
-	return h;
+    int i;
+    unsigned h;
+
+    h = 0;
+    for (i = 0; i < n; i++) {
+	h ^= uv[i];
+    }
+    return h;
 }
-
+
 /*
  - initialize - hand-craft a cache entry for startup, otherwise get ready
  ^ static struct sset *initialize(struct vars *, struct dfa *, chr *);
  */
 static struct sset *
-initialize(v, d, start)
-struct vars *v;			/* used only for debug flags */
-struct dfa *d;
-chr *start;
+initialize(
+    struct vars *v,		/* used only for debug flags */
+    struct dfa *d,
+    chr *start)
 {
-	struct sset *ss;
-	int i;
-
-	/* is previous one still there? */
-	if (d->nssused > 0 && (d->ssets[0].flags&STARTER))
-		ss = &d->ssets[0];
-	else {				/* no, must (re)build it */
-		ss = getvacant(v, d, start, start);
-		for (i = 0; i < d->wordsper; i++)
-			ss->states[i] = 0;
-		BSET(ss->states, d->cnfa->pre);
-		ss->hash = HASH(ss->states, d->wordsper);
-		assert(d->cnfa->pre != d->cnfa->post);
-		ss->flags = STARTER|LOCKED|NOPROGRESS;
-		/* lastseen dealt with below */
+    struct sset *ss;
+    int i;
+
+    /*
+     * Is previous one still there?
+     */
+
+    if (d->nssused > 0 && (d->ssets[0].flags&STARTER)) {
+	ss = &d->ssets[0];
+    } else {			/* no, must (re)build it */
+	ss = getvacant(v, d, start, start);
+	for (i = 0; i < d->wordsper; i++) {
+	    ss->states[i] = 0;
 	}
-
-	for (i = 0; i < d->nssused; i++)
-		d->ssets[i].lastseen = NULL;
-	ss->lastseen = start;		/* maybe untrue, but harmless */
-	d->lastpost = NULL;
-	d->lastnopr = NULL;
-	return ss;
+	BSET(ss->states, d->cnfa->pre);
+	ss->hash = HASH(ss->states, d->wordsper);
+	assert(d->cnfa->pre != d->cnfa->post);
+	ss->flags = STARTER|LOCKED|NOPROGRESS;
+
+	/*
+	 * lastseen dealt with below
+	 */
+    }
+
+    for (i = 0; i < d->nssused; i++) {
+	d->ssets[i].lastseen = NULL;
+    }
+    ss->lastseen = start;	/* maybe untrue, but harmless */
+    d->lastpost = NULL;
+    d->lastnopr = NULL;
+    return ss;
 }
-
+
 /*
  - miss - handle a cache miss
  ^ static struct sset *miss(struct vars *, struct dfa *, struct sset *,
  ^ 	pcolor, chr *, chr *);
  */
 static struct sset *		/* NULL if goes to empty set */
-miss(v, d, css, co, cp, start)
-struct vars *v;			/* used only for debug flags */
-struct dfa *d;
-struct sset *css;
-pcolor co;
-chr *cp;			/* next chr */
-chr *start;			/* where the attempt got started */
+miss(
+    struct vars *v,		/* used only for debug flags */
+    struct dfa *d,
+    struct sset *css,
+    pcolor co,
+    chr *cp,			/* next chr */
+    chr *start)			/* where the attempt got started */
 {
-	struct cnfa *cnfa = d->cnfa;
-	int i;
-	unsigned h;
-	struct carc *ca;
-	struct sset *p;
-	int ispost;
-	int noprogress;
-	int gotstate;
-	int dolacons;
-	int sawlacons;
-
-	/* for convenience, we can be called even if it might not be a miss */
-	if (css->outs[co] != NULL) {
-		FDEBUG(("hit\n"));
-		return css->outs[co];
-	}
-	FDEBUG(("miss\n"));
-
-	/* first, what set of states would we end up in? */
-	for (i = 0; i < d->wordsper; i++)
-		d->work[i] = 0;
-	ispost = 0;
-	noprogress = 1;
-	gotstate = 0;
-	for (i = 0; i < d->nstates; i++)
-		if (ISBSET(css->states, i))
-			for (ca = cnfa->states[i]+1; ca->co != COLORLESS; ca++)
-				if (ca->co == co) {
-					BSET(d->work, ca->to);
-					gotstate = 1;
-					if (ca->to == cnfa->post)
-						ispost = 1;
-					if (!cnfa->states[ca->to]->co)
-						noprogress = 0;
-					FDEBUG(("%d -> %d\n", i, ca->to));
-				}
-	dolacons = (gotstate) ? (cnfa->flags&HASLACONS) : 0;
-	sawlacons = 0;
-	while (dolacons) {		/* transitive closure */
-		dolacons = 0;
-		for (i = 0; i < d->nstates; i++)
-			if (ISBSET(d->work, i))
-				for (ca = cnfa->states[i]+1; ca->co != COLORLESS;
-									ca++) {
-					if (ca->co <= cnfa->ncolors)
-						continue; /* NOTE CONTINUE */
-					sawlacons = 1;
-					if (ISBSET(d->work, ca->to))
-						continue; /* NOTE CONTINUE */
-					if (!lacon(v, cnfa, cp, ca->co))
-						continue; /* NOTE CONTINUE */
-					BSET(d->work, ca->to);
-					dolacons = 1;
-					if (ca->to == cnfa->post)
-						ispost = 1;
-					if (!cnfa->states[ca->to]->co)
-						noprogress = 0;
-					FDEBUG(("%d :> %d\n", i, ca->to));
-				}
+    struct cnfa *cnfa = d->cnfa;
+    int i;
+    unsigned h;
+    struct carc *ca;
+    struct sset *p;
+    int ispost;
+    int noprogress;
+    int gotstate;
+    int dolacons;
+    int sawlacons;
+
+    /*
+     * For convenience, we can be called even if it might not be a miss.
+     */
+
+    if (css->outs[co] != NULL) {
+	FDEBUG(("hit\n"));
+	return css->outs[co];
+    }
+    FDEBUG(("miss\n"));
+
+    /*
+     * First, what set of states would we end up in?
+     */
+
+    for (i = 0; i < d->wordsper; i++) {
+	d->work[i] = 0;
+    }
+    ispost = 0;
+    noprogress = 1;
+    gotstate = 0;
+    for (i = 0; i < d->nstates; i++) {
+	if (ISBSET(css->states, i)) {
+	    for (ca = cnfa->states[i]+1; ca->co != COLORLESS; ca++) {
+		if (ca->co == co) {
+		    BSET(d->work, ca->to);
+		    gotstate = 1;
+		    if (ca->to == cnfa->post) {
+			ispost = 1;
+		    }
+		    if (!cnfa->states[ca->to]->co) {
+			noprogress = 0;
+		    }
+		    FDEBUG(("%d -> %d\n", i, ca->to));
+		}
+	    }
 	}
-	if (!gotstate)
-		return NULL;
-	h = HASH(d->work, d->wordsper);
-
-	/* next, is that in the cache? */
-	for (p = d->ssets, i = d->nssused; i > 0; p++, i--)
-		if (HIT(h, d->work, p, d->wordsper)) {
-			FDEBUG(("cached c%d\n", p - d->ssets));
-			break;			/* NOTE BREAK OUT */
+    }
+    dolacons = (gotstate) ? (cnfa->flags&HASLACONS) : 0;
+    sawlacons = 0;
+    while (dolacons) {		/* transitive closure */
+	dolacons = 0;
+	for (i = 0; i < d->nstates; i++) {
+	    if (ISBSET(d->work, i)) {
+		for (ca = cnfa->states[i]+1; ca->co != COLORLESS; ca++) {
+		    if (ca->co <= cnfa->ncolors) {
+			continue; /* NOTE CONTINUE */
+		    }
+		    sawlacons = 1;
+		    if (ISBSET(d->work, ca->to)) {
+			continue; /* NOTE CONTINUE */
+		    }
+		    if (!lacon(v, cnfa, cp, ca->co)) {
+			continue; /* NOTE CONTINUE */
+		    }
+		    BSET(d->work, ca->to);
+		    dolacons = 1;
+		    if (ca->to == cnfa->post) {
+			ispost = 1;
+		    }
+		    if (!cnfa->states[ca->to]->co) {
+			noprogress = 0;
+		    }
+		    FDEBUG(("%d :> %d\n", i, ca->to));
 		}
-	if (i == 0) {		/* nope, need a new cache entry */
-		p = getvacant(v, d, cp, start);
-		assert(p != css);
-		for (i = 0; i < d->wordsper; i++)
-			p->states[i] = d->work[i];
-		p->hash = h;
-		p->flags = (ispost) ? POSTSTATE : 0;
-		if (noprogress)
-			p->flags |= NOPROGRESS;
-		/* lastseen to be dealt with by caller */
+	    }
 	}
-
-	if (!sawlacons) {		/* lookahead conds. always cache miss */
-		FDEBUG(("c%d[%d]->c%d\n", css - d->ssets, co, p - d->ssets));
-		css->outs[co] = p;
-		css->inchain[co] = p->ins;
-		p->ins.ss = css;
-		p->ins.co = (color)co;
+    }
+    if (!gotstate) {
+	return NULL;
+    }
+    h = HASH(d->work, d->wordsper);
+
+    /*
+     * Next, is that in the cache?
+     */
+
+    for (p = d->ssets, i = d->nssused; i > 0; p++, i--) {
+	 if (HIT(h, d->work, p, d->wordsper)) {
+	     FDEBUG(("cached c%d\n", p - d->ssets));
+	     break;			/* NOTE BREAK OUT */
+	 }
+    }
+    if (i == 0) {		/* nope, need a new cache entry */
+	p = getvacant(v, d, cp, start);
+	assert(p != css);
+	for (i = 0; i < d->wordsper; i++) {
+	    p->states[i] = d->work[i];
+	}
+	p->hash = h;
+	p->flags = (ispost) ? POSTSTATE : 0;
+	if (noprogress) {
+	    p->flags |= NOPROGRESS;
 	}
-	return p;
-}
 
+	/*
+	 * lastseen to be dealt with by caller
+	 */
+    }
+
+    if (!sawlacons) {		/* lookahead conds. always cache miss */
+	FDEBUG(("c%d[%d]->c%d\n", css - d->ssets, co, p - d->ssets));
+	css->outs[co] = p;
+	css->inchain[co] = p->ins;
+	p->ins.ss = css;
+	p->ins.co = (color)co;
+    }
+    return p;
+}
+
 /*
  - lacon - lookahead-constraint checker for miss()
  ^ static int lacon(struct vars *, struct cnfa *, chr *, pcolor);
  */
 static int			/* predicate:  constraint satisfied? */
-lacon(v, pcnfa, cp, co)
-struct vars *v;
-struct cnfa *pcnfa;		/* parent cnfa */
-chr *cp;
-pcolor co;			/* "color" of the lookahead constraint */
+lacon(
+    struct vars *v,
+    struct cnfa *pcnfa,		/* parent cnfa */
+    chr *cp,
+    pcolor co)			/* "color" of the lookahead constraint */
 {
-	int n;
-	struct subre *sub;
-	struct dfa *d;
-	struct smalldfa sd;
-	chr *end;
-
-	n = co - pcnfa->ncolors;
-	assert(n < v->g->nlacons && v->g->lacons != NULL);
-	FDEBUG(("=== testing lacon %d\n", n));
-	sub = &v->g->lacons[n];
-	d = newdfa(v, &sub->cnfa, &v->g->cmap, &sd);
-	if (d == NULL) {
-		ERR(REG_ESPACE);
-		return 0;
-	}
-	end = longest(v, d, cp, v->stop, (int *)NULL);
-	freedfa(d);
-	FDEBUG(("=== lacon %d match %d\n", n, (end != NULL)));
-	return (sub->subno) ? (end != NULL) : (end == NULL);
+    int n;
+    struct subre *sub;
+    struct dfa *d;
+    struct smalldfa sd;
+    chr *end;
+
+    n = co - pcnfa->ncolors;
+    assert(n < v->g->nlacons && v->g->lacons != NULL);
+    FDEBUG(("=== testing lacon %d\n", n));
+    sub = &v->g->lacons[n];
+    d = newdfa(v, &sub->cnfa, &v->g->cmap, &sd);
+    if (d == NULL) {
+	ERR(REG_ESPACE);
+	return 0;
+    }
+    end = longest(v, d, cp, v->stop, (int *)NULL);
+    freedfa(d);
+    FDEBUG(("=== lacon %d match %d\n", n, (end != NULL)));
+    return (sub->subno) ? (end != NULL) : (end == NULL);
 }
-
+
 /*
  - getvacant - get a vacant state set
  * This routine clears out the inarcs and outarcs, but does not otherwise
@@ -551,127 +650,167 @@ pcolor co;			/* "color" of the lookahead constraint */
  ^ static struct sset *getvacant(struct vars *, struct dfa *, chr *, chr *);
  */
 static struct sset *
-getvacant(v, d, cp, start)
-struct vars *v;			/* used only for debug flags */
-struct dfa *d;
-chr *cp;
-chr *start;
+getvacant(
+    struct vars *v,		/* used only for debug flags */
+    struct dfa *d,
+    chr *cp,
+    chr *start)
 {
-	int i;
-	struct sset *ss;
-	struct sset *p;
-	struct arcp ap;
-	struct arcp lastap = {NULL, 0}; /* silence gcc 4 warning */
-	color co;
-
-	ss = pickss(v, d, cp, start);
-	assert(!(ss->flags&LOCKED));
-
-	/* clear out its inarcs, including self-referential ones */
-	ap = ss->ins;
-	while ((p = ap.ss) != NULL) {
-		co = ap.co;
-		FDEBUG(("zapping c%d's %ld outarc\n", p - d->ssets, (long)co));
-		p->outs[co] = NULL;
-		ap = p->inchain[co];
-		p->inchain[co].ss = NULL;	/* paranoia */
+    int i;
+    struct sset *ss;
+    struct sset *p;
+    struct arcp ap;
+    struct arcp lastap = {NULL, 0}; /* silence gcc 4 warning */
+    color co;
+
+    ss = pickss(v, d, cp, start);
+    assert(!(ss->flags&LOCKED));
+
+    /*
+     * Clear out its inarcs, including self-referential ones.
+     */
+
+    ap = ss->ins;
+    while ((p = ap.ss) != NULL) {
+	co = ap.co;
+	FDEBUG(("zapping c%d's %ld outarc\n", p - d->ssets, (long)co));
+	p->outs[co] = NULL;
+	ap = p->inchain[co];
+	p->inchain[co].ss = NULL; /* paranoia */
+    }
+    ss->ins.ss = NULL;
+
+    /*
+     * Take it off the inarc chains of the ssets reached by its outarcs.
+     */
+
+    for (i = 0; i < d->ncolors; i++) {
+	p = ss->outs[i];
+	assert(p != ss);	/* not self-referential */
+	if (p == NULL) {
+	    continue;		/* NOTE CONTINUE */
 	}
-	ss->ins.ss = NULL;
-
-	/* take it off the inarc chains of the ssets reached by its outarcs */
-	for (i = 0; i < d->ncolors; i++) {
-		p = ss->outs[i];
-		assert(p != ss);		/* not self-referential */
-		if (p == NULL)
-			continue;		/* NOTE CONTINUE */
-		FDEBUG(("del outarc %d from c%d's in chn\n", i, p - d->ssets));
-		if (p->ins.ss == ss && p->ins.co == i)
-			p->ins = ss->inchain[i];
-		else {
-			assert(p->ins.ss != NULL);
-			for (ap = p->ins; ap.ss != NULL &&
-						!(ap.ss == ss && ap.co == i);
-						ap = ap.ss->inchain[ap.co])
-				lastap = ap;
-			assert(ap.ss != NULL);
-			lastap.ss->inchain[lastap.co] = ss->inchain[i];
-		}
-		ss->outs[i] = NULL;
-		ss->inchain[i].ss = NULL;
+	FDEBUG(("del outarc %d from c%d's in chn\n", i, p - d->ssets));
+	if (p->ins.ss == ss && p->ins.co == i) {
+	    p->ins = ss->inchain[i];
+	} else {
+	    assert(p->ins.ss != NULL);
+	    for (ap = p->ins; ap.ss != NULL &&
+		    !(ap.ss == ss && ap.co == i);
+		    ap = ap.ss->inchain[ap.co]) {
+		lastap = ap;
+	    }
+	    assert(ap.ss != NULL);
+	    lastap.ss->inchain[lastap.co] = ss->inchain[i];
 	}
+	ss->outs[i] = NULL;
+	ss->inchain[i].ss = NULL;
+    }
 
-	/* if ss was a success state, may need to remember location */
-	if ((ss->flags&POSTSTATE) && ss->lastseen != d->lastpost &&
-			(d->lastpost == NULL || d->lastpost < ss->lastseen))
-		d->lastpost = ss->lastseen;
+    /*
+     * If ss was a success state, may need to remember location.
+     */
 
-	/* likewise for a no-progress state */
-	if ((ss->flags&NOPROGRESS) && ss->lastseen != d->lastnopr &&
-			(d->lastnopr == NULL || d->lastnopr < ss->lastseen))
-		d->lastnopr = ss->lastseen;
+    if ((ss->flags&POSTSTATE) && ss->lastseen != d->lastpost &&
+	    (d->lastpost == NULL || d->lastpost < ss->lastseen)) {
+	d->lastpost = ss->lastseen;
+    }
 
-	return ss;
-}
+    /*
+     * Likewise for a no-progress state.
+     */
 
+    if ((ss->flags&NOPROGRESS) && ss->lastseen != d->lastnopr &&
+	    (d->lastnopr == NULL || d->lastnopr < ss->lastseen)) {
+	d->lastnopr = ss->lastseen;
+    }
+
+    return ss;
+}
+
 /*
  - pickss - pick the next stateset to be used
  ^ static struct sset *pickss(struct vars *, struct dfa *, chr *, chr *);
  */
 static struct sset *
-pickss(v, d, cp, start)
-struct vars *v;			/* used only for debug flags */
-struct dfa *d;
-chr *cp;
-chr *start;
+pickss(
+    struct vars *v,		/* used only for debug flags */
+    struct dfa *d,
+    chr *cp,
+    chr *start)
 {
-	int i;
-	struct sset *ss;
-	struct sset *end;
-	chr *ancient;
-
-	/* shortcut for cases where cache isn't full */
-	if (d->nssused < d->nssets) {
-		i = d->nssused;
-		d->nssused++;
-		ss = &d->ssets[i];
-		FDEBUG(("new c%d\n", i));
-		/* set up innards */
-		ss->states = &d->statesarea[i * d->wordsper];
-		ss->flags = 0;
-		ss->ins.ss = NULL;
-		ss->ins.co = WHITE;		/* give it some value */
-		ss->outs = &d->outsarea[i * d->ncolors];
-		ss->inchain = &d->incarea[i * d->ncolors];
-		for (i = 0; i < d->ncolors; i++) {
-			ss->outs[i] = NULL;
-			ss->inchain[i].ss = NULL;
-		}
-		return ss;
+    int i;
+    struct sset *ss;
+    struct sset *end;
+    chr *ancient;
+
+    /*
+     * Shortcut for cases where cache isn't full.
+     */
+
+    if (d->nssused < d->nssets) {
+	i = d->nssused;
+	d->nssused++;
+	ss = &d->ssets[i];
+	FDEBUG(("new c%d\n", i));
+
+	/*
+	 * Set up innards.
+	 */
+
+	ss->states = &d->statesarea[i * d->wordsper];
+	ss->flags = 0;
+	ss->ins.ss = NULL;
+	ss->ins.co = WHITE;	/* give it some value */
+	ss->outs = &d->outsarea[i * d->ncolors];
+	ss->inchain = &d->incarea[i * d->ncolors];
+	for (i = 0; i < d->ncolors; i++) {
+	    ss->outs[i] = NULL;
+	    ss->inchain[i].ss = NULL;
+	}
+	return ss;
+    }
+
+    /*
+     * Look for oldest, or old enough anyway.
+     */
+
+    if (cp - start > d->nssets*2/3) {	/* oldest 33% are expendable */
+	ancient = cp - d->nssets*2/3;
+    } else {
+	ancient = start;
+    }
+    for (ss = d->search, end = &d->ssets[d->nssets]; ss < end; ss++) {
+	if ((ss->lastseen == NULL || ss->lastseen < ancient)
+		&& !(ss->flags&LOCKED)) {
+	    d->search = ss + 1;
+	    FDEBUG(("replacing c%d\n", ss - d->ssets));
+	    return ss;
 	}
+    }
+    for (ss = d->ssets, end = d->search; ss < end; ss++) {
+	if ((ss->lastseen == NULL || ss->lastseen < ancient)
+		&& !(ss->flags&LOCKED)) {
+	    d->search = ss + 1;
+	    FDEBUG(("replacing c%d\n", ss - d->ssets));
+	    return ss;
+	}
+    }
 
-	/* look for oldest, or old enough anyway */
-	if (cp - start > d->nssets*2/3)		/* oldest 33% are expendable */
-		ancient = cp - d->nssets*2/3;
-	else
-		ancient = start;
-	for (ss = d->search, end = &d->ssets[d->nssets]; ss < end; ss++)
-		if ((ss->lastseen == NULL || ss->lastseen < ancient) &&
-							!(ss->flags&LOCKED)) {
-			d->search = ss + 1;
-			FDEBUG(("replacing c%d\n", ss - d->ssets));
-			return ss;
-		}
-	for (ss = d->ssets, end = d->search; ss < end; ss++)
-		if ((ss->lastseen == NULL || ss->lastseen < ancient) &&
-							!(ss->flags&LOCKED)) {
-			d->search = ss + 1;
-			FDEBUG(("replacing c%d\n", ss - d->ssets));
-			return ss;
-		}
+    /*
+     * Nobody's old enough?!? -- something's really wrong.
+     */
 
-	/* nobody's old enough?!? -- something's really wrong */
-	FDEBUG(("can't find victim to replace!\n"));
-	assert(NOTREACHED);
-	ERR(REG_ASSERT);
-	return d->ssets;
+    FDEBUG(("can't find victim to replace!\n"));
+    assert(NOTREACHED);
+    ERR(REG_ASSERT);
+    return d->ssets;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regerror.c b/generic/regerror.c
index 6376e80..a1a0163 100644
--- a/generic/regerror.c
+++ b/generic/regerror.c
@@ -2,20 +2,20 @@
  * regerror - error-code expansion
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -31,79 +31,99 @@
 
 #include "regguts.h"
 
-/* unknown-error explanation */
-static CONST char unk[] = "*** unknown regex error code 0x%x ***";
+/*
+ * Unknown-error explanation.
+ */
+
+static const char unk[] = "*** unknown regex error code 0x%x ***";
+
+/*
+ * Struct to map among codes, code names, and explanations.
+ */
 
-/* struct to map among codes, code names, and explanations */
 static struct rerr {
-	int code;
-	char *name;
-	char *explain;
+    int code;
+    const char *name;
+    const char *explain;
 } rerrs[] = {
-	/* the actual table is built from regex.h */
-#	include "regerrs.h"
-	{ -1,	"",	"oops" },	/* explanation special-cased in code */
+    /* The actual table is built from regex.h */
+#include "regerrs.h"
+    { -1, "", "oops" },		/* explanation special-cased in code */
 };
-
+
 /*
  - regerror - the interface to error numbers
  */
 /* ARGSUSED */
-size_t				/* actual space needed (including NUL) */
-regerror(code, preg, errbuf, errbuf_size)
-int code;			/* error code, or REG_ATOI or REG_ITOA */
-CONST regex_t *preg;		/* associated regex_t (unused at present) */
-char *errbuf;			/* result buffer (unless errbuf_size==0) */
-size_t errbuf_size;		/* available space in errbuf, can be 0 */
+size_t				/* Actual space needed (including NUL) */
+regerror(
+    int code,			/* Error code, or REG_ATOI or REG_ITOA */
+    const regex_t *preg,	/* Associated regex_t (unused at present) */
+    char *errbuf,		/* Result buffer (unless errbuf_size==0) */
+    size_t errbuf_size)		/* Available space in errbuf, can be 0 */
 {
-	struct rerr *r;
-	char *msg;
-	char convbuf[sizeof(unk)+50];	/* 50 = plenty for int */
-	size_t len;
-	int icode;
+    struct rerr *r;
+    const char *msg;
+    char convbuf[sizeof(unk)+50]; /* 50 = plenty for int */
+    size_t len;
+    int icode;
 
-	switch (code) {
-	case REG_ATOI:		/* convert name to number */
-		for (r = rerrs; r->code >= 0; r++)
-			if (strcmp(r->name, errbuf) == 0)
-				break;
-		sprintf(convbuf, "%d", r->code);	/* -1 for unknown */
-		msg = convbuf;
+    switch (code) {
+    case REG_ATOI:		/* Convert name to number */
+	for (r = rerrs; r->code >= 0; r++) {
+	    if (strcmp(r->name, errbuf) == 0) {
 		break;
-	case REG_ITOA:		/* convert number to name */
-		icode = atoi(errbuf);	/* not our problem if this fails */
-		for (r = rerrs; r->code >= 0; r++)
-			if (r->code == icode)
-				break;
-		if (r->code >= 0)
-			msg = r->name;
-		else {			/* unknown; tell him the number */
-			sprintf(convbuf, "REG_%u", (unsigned)icode);
-			msg = convbuf;
-		}
+	    }
+	}
+	sprintf(convbuf, "%d", r->code); /* -1 for unknown */
+	msg = convbuf;
+	break;
+    case REG_ITOA:		/* Convert number to name */
+	icode = atoi(errbuf);	/* Not our problem if this fails */
+	for (r = rerrs; r->code >= 0; r++) {
+	    if (r->code == icode) {
 		break;
-	default:		/* a real, normal error code */
-		for (r = rerrs; r->code >= 0; r++)
-			if (r->code == code)
-				break;
-		if (r->code >= 0)
-			msg = r->explain;
-		else {			/* unknown; say so */
-			sprintf(convbuf, unk, code);
-			msg = convbuf;
-		}
+	    }
+	}
+	if (r->code >= 0) {
+	    msg = r->name;
+	} else {		/* Unknown; tell him the number */
+	    sprintf(convbuf, "REG_%u", (unsigned)icode);
+	    msg = convbuf;
+	}
+	break;
+    default:			/* A real, normal error code */
+	for (r = rerrs; r->code >= 0; r++) {
+	    if (r->code == code) {
 		break;
+	    }
+	}
+	if (r->code >= 0) {
+	    msg = r->explain;
+	} else {		/* Unknown; say so */
+	    sprintf(convbuf, unk, code);
+	    msg = convbuf;
 	}
+	break;
+    }
 
-	len = strlen(msg) + 1;		/* space needed, including NUL */
-	if (errbuf_size > 0) {
-		if (errbuf_size > len)
-			strcpy(errbuf, msg);
-		else {			/* truncate to fit */
-			strncpy(errbuf, msg, errbuf_size-1);
-			errbuf[errbuf_size-1] = '\0';
-		}
+    len = strlen(msg) + 1;	/* Space needed, including NUL */
+    if (errbuf_size > 0) {
+	if (errbuf_size > len) {
+	    strcpy(errbuf, msg);
+	} else {		/* Truncate to fit */
+	    strncpy(errbuf, msg, errbuf_size-1);
+	    errbuf[errbuf_size-1] = '\0';
 	}
+    }
 
-	return len;
+    return len;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regex.h b/generic/regex.h
index a35925a..fa86092 100644
--- a/generic/regex.h
+++ b/generic/regex.h
@@ -4,20 +4,20 @@
  * regular expressions
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * Corporation, none of whom are responsible for the results. The author
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
  *
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -30,38 +30,35 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  *
- *
  * Prototypes etc. marked with "^" within comments get gathered up (and
- * possibly edited) by the regfwd program and inserted near the bottom of
- * this file.
+ * possibly edited) by the regfwd program and inserted near the bottom of this
+ * file.
  *
- * We offer the option of declaring one wide-character version of the
- * RE functions as well as the char versions.  To do that, define
- * __REG_WIDE_T to the type of wide characters (unfortunately, there
- * is no consensus that wchar_t is suitable) and __REG_WIDE_COMPILE and
- * __REG_WIDE_EXEC to the names to be used for the compile and execute
- * functions (suggestion:  re_Xcomp and re_Xexec, where X is a letter
- * suggestive of the wide type, e.g. re_ucomp and re_uexec for Unicode).
- * For cranky old compilers, it may be necessary to do something like:
+ * We offer the option of declaring one wide-character version of the RE
+ * functions as well as the char versions. To do that, define __REG_WIDE_T to
+ * the type of wide characters (unfortunately, there is no consensus that
+ * wchar_t is suitable) and __REG_WIDE_COMPILE and __REG_WIDE_EXEC to the
+ * names to be used for the compile and execute functions (suggestion:
+ * re_Xcomp and re_Xexec, where X is a letter suggestive of the wide type,
+ * e.g. re_ucomp and re_uexec for Unicode). For cranky old compilers, it may
+ * be necessary to do something like:
  * #define	__REG_WIDE_COMPILE(a,b,c,d)	re_Xcomp(a,b,c,d)
  * #define	__REG_WIDE_EXEC(a,b,c,d,e,f,g)	re_Xexec(a,b,c,d,e,f,g)
  * rather than just #defining the names as parameterless macros.
  *
  * For some specialized purposes, it may be desirable to suppress the
- * declarations of the "front end" functions, regcomp() and regexec(),
- * or of the char versions of the compile and execute functions.  To
- * suppress the front-end functions, define __REG_NOFRONT.  To suppress
- * the char versions, define __REG_NOCHAR.
+ * declarations of the "front end" functions, regcomp() and regexec(), or of
+ * the char versions of the compile and execute functions. To suppress the
+ * front-end functions, define __REG_NOFRONT. To suppress the char versions,
+ * define __REG_NOCHAR.
  *
  * The right place to do those defines (and some others you may want, see
- * below) would be <sys/types.h>.  If you don't have control of that file,
- * the right place to add your own defines to this file is marked below.
- * This is normally done automatically, by the makefile and regmkhdr, based
- * on the contents of regcustom.h.
+ * below) would be <sys/types.h>. If you don't have control of that file, the
+ * right place to add your own defines to this file is marked below. This is
+ * normally done automatically, by the makefile and regmkhdr, based on the
+ * contents of regcustom.h.
  */
 
-
-
 /*
  * voodoo for C++
  */
@@ -69,18 +66,15 @@
 extern "C" {
 #endif
 
-
-
 /*
  * Add your own defines, if needed, here.
  */
 
-
-
 /*
- * Location where a chunk of regcustom.h is automatically spliced into
- * this file (working from its prototype, regproto.h).
+ * Location where a chunk of regcustom.h is automatically spliced into this
+ * file (working from its prototype, regproto.h).
  */
+
 /* --- begin --- */
 /* ensure certain things don't sneak in from system headers */
 #ifdef __REG_WIDE_T
@@ -121,15 +115,14 @@ extern "C" {
 #define	regerror	TclReError
 /* --- end --- */
 
-
 /*
  * interface types etc.
  */
 
 /*
- * regoff_t has to be large enough to hold either off_t or ssize_t,
- * and must be signed; it's only a guess that long is suitable, so we
- * offer <sys/types.h> an override.
+ * regoff_t has to be large enough to hold either off_t or ssize_t, and must
+ * be signed; it's only a guess that long is suitable, so we offer
+ * <sys/types.h> an override.
  */
 #ifdef __REG_REGOFF_T
 typedef __REG_REGOFF_T regoff_t;
@@ -148,8 +141,8 @@ typedef void re_void;
 #endif
 
 /*
- * Also for benefit of old compilers, <sys/types.h> can supply a macro
- * which expands to a substitute for `const'.
+ * Also for benefit of old compilers, <sys/types.h> can supply a macro which
+ * expands to a substitute for `const'.
  */
 #ifndef __REG_CONST
 #define	__REG_CONST	const
@@ -163,43 +156,41 @@ typedef void re_void;
 
 /* the biggie, a compiled RE (or rather, a front end to same) */
 typedef struct {
-	int re_magic;		/* magic number */
-	size_t re_nsub;		/* number of subexpressions */
-	long re_info;		/* information about RE */
-#		define	REG_UBACKREF		000001
-#		define	REG_ULOOKAHEAD		000002
-#		define	REG_UBOUNDS		000004
-#		define	REG_UBRACES		000010
-#		define	REG_UBSALNUM		000020
-#		define	REG_UPBOTCH		000040
-#		define	REG_UBBS		000100
-#		define	REG_UNONPOSIX		000200
-#		define	REG_UUNSPEC		000400
-#		define	REG_UUNPORT		001000
-#		define	REG_ULOCALE		002000
-#		define	REG_UEMPTYMATCH		004000
-#		define	REG_UIMPOSSIBLE		010000
-#		define	REG_USHORTEST		020000
-	int re_csize;		/* sizeof(character) */
-	char *re_endp;		/* backward compatibility kludge */
-	/* the rest is opaque pointers to hidden innards */
-	char *re_guts;		/* `char *' is more portable than `void *' */
-	char *re_fns;
+    int re_magic;		/* magic number */
+    size_t re_nsub;		/* number of subexpressions */
+    long re_info;		/* information about RE */
+#define	REG_UBACKREF		000001
+#define	REG_ULOOKAHEAD		000002
+#define	REG_UBOUNDS		000004
+#define	REG_UBRACES		000010
+#define	REG_UBSALNUM		000020
+#define	REG_UPBOTCH		000040
+#define	REG_UBBS		000100
+#define	REG_UNONPOSIX		000200
+#define	REG_UUNSPEC		000400
+#define	REG_UUNPORT		001000
+#define	REG_ULOCALE		002000
+#define	REG_UEMPTYMATCH		004000
+#define	REG_UIMPOSSIBLE		010000
+#define	REG_USHORTEST		020000
+    int re_csize;		/* sizeof(character) */
+    char *re_endp;		/* backward compatibility kludge */
+    /* the rest is opaque pointers to hidden innards */
+    char *re_guts;		/* `char *' is more portable than `void *' */
+    char *re_fns;
 } regex_t;
 
 /* result reporting (may acquire more fields later) */
 typedef struct {
-	regoff_t rm_so;		/* start of substring */
-	regoff_t rm_eo;		/* end of substring */
+    regoff_t rm_so;		/* start of substring */
+    regoff_t rm_eo;		/* end of substring */
 } regmatch_t;
 
 /* supplementary control and reporting */
 typedef struct {
-	regmatch_t rm_extend;	/* see REG_EXPECT */
+    regmatch_t rm_extend;	/* see REG_EXPECT */
 } rm_detail_t;
 
-
-
 /*
  * compilation
  ^ #ifndef __REG_NOCHAR
@@ -231,8 +222,6 @@ typedef struct {
 #define	REG_FAKE	010000	/* none of your business :-) */
 #define	REG_PROGRESS	020000	/* none of your business :-) */
 
-
-
 /*
  * execution
  ^ #ifndef __REG_NOCHAR
@@ -254,23 +243,19 @@ typedef struct {
 #define	REG_MTRACE	0020	/* none of your business */
 #define	REG_SMALL	0040	/* none of your business */
 
-
-
 /*
  * misc generics (may be more functions here eventually)
  ^ re_void regfree(regex_t *);
  */
 
-
-
 /*
  * error reporting
  * Be careful if modifying the list of error codes -- the table used by
  * regerror() is generated automatically from this file!
  *
- * Note that there is no wide-char variant of regerror at this time; what
- * kind of character is used for error reports is independent of what kind
- * is used in matching.
+ * Note that there is no wide-char variant of regerror at this time; what kind
+ * of character is used for error reports is independent of what kind is used
+ * in matching.
  *
  ^ extern size_t regerror(int, __REG_CONST regex_t *, char *, size_t);
  */
@@ -297,8 +282,6 @@ typedef struct {
 #define	REG_ATOI	101	/* convert error-code name to number */
 #define	REG_ITOA	102	/* convert error-code number to name */
 
-
-
 /*
  * the prototypes, as possibly munched by regfwd
  */
@@ -306,30 +289,28 @@ typedef struct {
 /* automatically gathered by fwd; do not hand-edit */
 /* === regproto.h === */
 #ifndef __REG_NOCHAR
-int re_comp _ANSI_ARGS_((regex_t *, __REG_CONST char *, size_t, int));
+int re_comp(regex_t *, __REG_CONST char *, size_t, int);
 #endif
 #ifndef __REG_NOFRONT
-int regcomp _ANSI_ARGS_((regex_t *, __REG_CONST char *, int));
+int regcomp(regex_t *, __REG_CONST char *, int);
 #endif
 #ifdef __REG_WIDE_T
-int __REG_WIDE_COMPILE _ANSI_ARGS_((regex_t *, __REG_CONST __REG_WIDE_T *, size_t, int));
+MODULE_SCOPE int __REG_WIDE_COMPILE(regex_t *, __REG_CONST __REG_WIDE_T *, size_t, int);
 #endif
 #ifndef __REG_NOCHAR
-int re_exec _ANSI_ARGS_((regex_t *, __REG_CONST char *, size_t, rm_detail_t *, size_t, regmatch_t [], int));
+int re_exec(regex_t *, __REG_CONST char *, size_t, rm_detail_t *, size_t, regmatch_t [], int);
 #endif
 #ifndef __REG_NOFRONT
-int regexec _ANSI_ARGS_((regex_t *, __REG_CONST char *, size_t, regmatch_t [], int));
+int regexec(regex_t *, __REG_CONST char *, size_t, regmatch_t [], int);
 #endif
 #ifdef __REG_WIDE_T
-int __REG_WIDE_EXEC _ANSI_ARGS_((regex_t *, __REG_CONST __REG_WIDE_T *, size_t, rm_detail_t *, size_t, regmatch_t [], int));
+MODULE_SCOPE int __REG_WIDE_EXEC(regex_t *, __REG_CONST __REG_WIDE_T *, size_t, rm_detail_t *, size_t, regmatch_t [], int);
 #endif
-re_void regfree _ANSI_ARGS_((regex_t *));
-extern size_t regerror _ANSI_ARGS_((int, __REG_CONST regex_t *, char *, size_t));
+MODULE_SCOPE re_void regfree(regex_t *);
+MODULE_SCOPE size_t regerror(int, __REG_CONST regex_t *, char *, size_t);
 /* automatically gathered by fwd; do not hand-edit */
 /* =====^!^===== end forwards =====^!^===== */
 
-
-
 /*
  * more C++ voodoo
  */
@@ -337,6 +318,4 @@ extern size_t regerror _ANSI_ARGS_((int, __REG_CONST regex_t *, char *, size_t))
 }
 #endif
 
-
-
 #endif
diff --git a/generic/regexec.c b/generic/regexec.c
index be459d3..c902209 100644
--- a/generic/regexec.c
+++ b/generic/regexec.c
@@ -2,20 +2,20 @@
  * re_*exec and friends - match REs
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -26,1015 +26,1181 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
 #include "regguts.h"
 
+/*
+ * Lazy-DFA representation.
+ */
 
-
-/* lazy-DFA representation */
 struct arcp {			/* "pointer" to an outarc */
-	struct sset *ss;
-	color co;
+    struct sset *ss;
+    color co;
 };
 
 struct sset {			/* state set */
-	unsigned *states;	/* pointer to bitvector */
-	unsigned hash;		/* hash of bitvector */
-#		define	HASH(bv, nw)	(((nw) == 1) ? *(bv) : hash(bv, nw))
-#	define	HIT(h,bv,ss,nw)	((ss)->hash == (h) && ((nw) == 1 || \
-		memcmp(VS(bv), VS((ss)->states), (nw)*sizeof(unsigned)) == 0))
-	int flags;
-#		define	STARTER		01	/* the initial state set */
-#		define	POSTSTATE	02	/* includes the goal state */
-#		define	LOCKED		04	/* locked in cache */
-#		define	NOPROGRESS	010	/* zero-progress state set */
-	struct arcp ins;	/* chain of inarcs pointing here */
-	chr *lastseen;		/* last entered on arrival here */
-	struct sset **outs;	/* outarc vector indexed by color */
-	struct arcp *inchain;	/* chain-pointer vector for outarcs */
+    unsigned *states;		/* pointer to bitvector */
+    unsigned hash;		/* hash of bitvector */
+#define	HASH(bv, nw)	(((nw) == 1) ? *(bv) : hash(bv, nw))
+#define	HIT(h,bv,ss,nw)	((ss)->hash == (h) && ((nw) == 1 || \
+	memcmp(VS(bv), VS((ss)->states), (nw)*sizeof(unsigned)) == 0))
+    int flags;
+#define	STARTER		01	/* the initial state set */
+#define	POSTSTATE	02	/* includes the goal state */
+#define	LOCKED		04	/* locked in cache */
+#define	NOPROGRESS	010	/* zero-progress state set */
+    struct arcp ins;		/* chain of inarcs pointing here */
+    chr *lastseen;		/* last entered on arrival here */
+    struct sset **outs;		/* outarc vector indexed by color */
+    struct arcp *inchain;	/* chain-pointer vector for outarcs */
 };
 
 struct dfa {
-	int nssets;		/* size of cache */
-	int nssused;		/* how many entries occupied yet */
-	int nstates;		/* number of states */
-	int ncolors;		/* length of outarc and inchain vectors */
-	int wordsper;		/* length of state-set bitvectors */
-	struct sset *ssets;	/* state-set cache */
-	unsigned *statesarea;	/* bitvector storage */
-	unsigned *work;		/* pointer to work area within statesarea */
-	struct sset **outsarea;	/* outarc-vector storage */
-	struct arcp *incarea;	/* inchain storage */
-	struct cnfa *cnfa;
-	struct colormap *cm;
-	chr *lastpost;		/* location of last cache-flushed success */
-	chr *lastnopr;		/* location of last cache-flushed NOPROGRESS */
-	struct sset *search;	/* replacement-search-pointer memory */
-	int cptsmalloced;	/* were the areas individually malloced? */
-	char *mallocarea;	/* self, or master malloced area, or NULL */
+    int nssets;			/* size of cache */
+    int nssused;		/* how many entries occupied yet */
+    int nstates;		/* number of states */
+    int ncolors;		/* length of outarc and inchain vectors */
+    int wordsper;		/* length of state-set bitvectors */
+    struct sset *ssets;		/* state-set cache */
+    unsigned *statesarea;	/* bitvector storage */
+    unsigned *work;		/* pointer to work area within statesarea */
+    struct sset **outsarea;	/* outarc-vector storage */
+    struct arcp *incarea;	/* inchain storage */
+    struct cnfa *cnfa;
+    struct colormap *cm;
+    chr *lastpost;		/* location of last cache-flushed success */
+    chr *lastnopr;		/* location of last cache-flushed NOPROGRESS */
+    struct sset *search;	/* replacement-search-pointer memory */
+    int cptsmalloced;		/* were the areas individually malloced? */
+    char *mallocarea;		/* self, or master malloced area, or NULL */
 };
 
 #define	WORK	1		/* number of work bitvectors needed */
 
-/* setup for non-malloc allocation for small cases */
+/*
+ * Setup for non-malloc allocation for small cases.
+ */
+
 #define	FEWSTATES	20	/* must be less than UBITS */
 #define	FEWCOLORS	15
 struct smalldfa {
-	struct dfa dfa;
-	struct sset ssets[FEWSTATES*2];
-	unsigned statesarea[FEWSTATES*2 + WORK];
-	struct sset *outsarea[FEWSTATES*2 * FEWCOLORS];
-	struct arcp incarea[FEWSTATES*2 * FEWCOLORS];
+    struct dfa dfa;
+    struct sset ssets[FEWSTATES*2];
+    unsigned statesarea[FEWSTATES*2 + WORK];
+    struct sset *outsarea[FEWSTATES*2 * FEWCOLORS];
+    struct arcp incarea[FEWSTATES*2 * FEWCOLORS];
 };
 #define	DOMALLOC	((struct smalldfa *)NULL)	/* force malloc */
 
+/*
+ * Internal variables, bundled for easy passing around.
+ */
 
-
-/* internal variables, bundled for easy passing around */
 struct vars {
-	regex_t *re;
-	struct guts *g;
-	int eflags;		/* copies of arguments */
-	size_t nmatch;
-	regmatch_t *pmatch;
-	rm_detail_t *details;
-	chr *start;		/* start of string */
-	chr *stop;		/* just past end of string */
-	int err;		/* error code if any (0 none) */
-	regoff_t *mem;		/* memory vector for backtracking */
-	struct smalldfa dfa1;
-	struct smalldfa dfa2;
+    regex_t *re;
+    struct guts *g;
+    int eflags;			/* copies of arguments */
+    size_t nmatch;
+    regmatch_t *pmatch;
+    rm_detail_t *details;
+    chr *start;			/* start of string */
+    chr *stop;			/* just past end of string */
+    int err;			/* error code if any (0 none) */
+    regoff_t *mem;		/* memory vector for backtracking */
+    struct smalldfa dfa1;
+    struct smalldfa dfa2;
 };
-#define	VISERR(vv)	((vv)->err != 0)	/* have we seen an error yet? */
+#define	VISERR(vv) ((vv)->err != 0)	/* have we seen an error yet? */
 #define	ISERR()	VISERR(v)
-#define	VERR(vv,e)	(((vv)->err) ? (vv)->err : ((vv)->err = (e)))
-#define	ERR(e)	VERR(v, e)		/* record an error */
+#define	VERR(vv,e) (((vv)->err) ? (vv)->err : ((vv)->err = (e)))
+#define	ERR(e)	VERR(v, e)	/* record an error */
 #define	NOERR()	{if (ISERR()) return v->err;}	/* if error seen, return it */
 #define	OFF(p)	((p) - v->start)
 #define	LOFF(p)	((long)OFF(p))
-
-
-
+
 /*
  * forward declarations
  */
 /* =====^!^===== begin forwards =====^!^===== */
 /* automatically gathered by fwd; do not hand-edit */
 /* === regexec.c === */
-int exec _ANSI_ARGS_((regex_t *, CONST chr *, size_t, rm_detail_t *, size_t, regmatch_t [], int));
-static int find _ANSI_ARGS_((struct vars *, struct cnfa *, struct colormap *));
-static int cfind _ANSI_ARGS_((struct vars *, struct cnfa *, struct colormap *));
-static int cfindloop _ANSI_ARGS_((struct vars *, struct cnfa *, struct colormap *, struct dfa *, struct dfa *, chr **));
-static VOID zapsubs _ANSI_ARGS_((regmatch_t *, size_t));
-static VOID zapmem _ANSI_ARGS_((struct vars *, struct subre *));
-static VOID subset _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int dissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int condissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int altdissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int cdissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int ccondissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int crevdissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int cbrdissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
-static int caltdissect _ANSI_ARGS_((struct vars *, struct subre *, chr *, chr *));
+int exec(regex_t *, CONST chr *, size_t, rm_detail_t *, size_t, regmatch_t [], int);
+static int find(struct vars *, struct cnfa *, struct colormap *);
+static int cfind(struct vars *, struct cnfa *, struct colormap *);
+static int cfindloop(struct vars *, struct cnfa *, struct colormap *, struct dfa *, struct dfa *, chr **);
+static VOID zapsubs(regmatch_t *, size_t);
+static VOID zapmem(struct vars *, struct subre *);
+static VOID subset(struct vars *, struct subre *, chr *, chr *);
+static int dissect(struct vars *, struct subre *, chr *, chr *);
+static int condissect(struct vars *, struct subre *, chr *, chr *);
+static int altdissect(struct vars *, struct subre *, chr *, chr *);
+static int cdissect(struct vars *, struct subre *, chr *, chr *);
+static int ccondissect(struct vars *, struct subre *, chr *, chr *);
+static int crevdissect(struct vars *, struct subre *, chr *, chr *);
+static int cbrdissect(struct vars *, struct subre *, chr *, chr *);
+static int caltdissect(struct vars *, struct subre *, chr *, chr *);
 /* === rege_dfa.c === */
-static chr *longest _ANSI_ARGS_((struct vars *, struct dfa *, chr *, chr *, int *));
-static chr *shortest _ANSI_ARGS_((struct vars *, struct dfa *, chr *, chr *, chr *, chr **, int *));
-static chr *lastcold _ANSI_ARGS_((struct vars *, struct dfa *));
-static struct dfa *newdfa _ANSI_ARGS_((struct vars *, struct cnfa *, struct colormap *, struct smalldfa *));
-static VOID freedfa _ANSI_ARGS_((struct dfa *));
-static unsigned hash _ANSI_ARGS_((unsigned *, int));
-static struct sset *initialize _ANSI_ARGS_((struct vars *, struct dfa *, chr *));
-static struct sset *miss _ANSI_ARGS_((struct vars *, struct dfa *, struct sset *, pcolor, chr *, chr *));
-static int lacon _ANSI_ARGS_((struct vars *, struct cnfa *, chr *, pcolor));
-static struct sset *getvacant _ANSI_ARGS_((struct vars *, struct dfa *, chr *, chr *));
-static struct sset *pickss _ANSI_ARGS_((struct vars *, struct dfa *, chr *, chr *));
+static chr *longest(struct vars *, struct dfa *, chr *, chr *, int *);
+static chr *shortest(struct vars *, struct dfa *, chr *, chr *, chr *, chr **, int *);
+static chr *lastcold(struct vars *, struct dfa *);
+static struct dfa *newdfa(struct vars *, struct cnfa *, struct colormap *, struct smalldfa *);
+static VOID freedfa(struct dfa *);
+static unsigned hash(unsigned *, int);
+static struct sset *initialize(struct vars *, struct dfa *, chr *);
+static struct sset *miss(struct vars *, struct dfa *, struct sset *, pcolor, chr *, chr *);
+static int lacon(struct vars *, struct cnfa *, chr *, pcolor);
+static struct sset *getvacant(struct vars *, struct dfa *, chr *, chr *);
+static struct sset *pickss(struct vars *, struct dfa *, chr *, chr *);
 /* automatically gathered by fwd; do not hand-edit */
 /* =====^!^===== end forwards =====^!^===== */
-
-
-
+
 /*
  - exec - match regular expression
  ^ int exec(regex_t *, CONST chr *, size_t, rm_detail_t *,
  ^					size_t, regmatch_t [], int);
  */
 int
-exec(re, string, len, details, nmatch, pmatch, flags)
-regex_t *re;
-CONST chr *string;
-size_t len;
-rm_detail_t *details;
-size_t nmatch;
-regmatch_t pmatch[];
-int flags;
+exec(
+    regex_t *re,
+    CONST chr *string,
+    size_t len,
+    rm_detail_t *details,
+    size_t nmatch,
+    regmatch_t pmatch[],
+    int flags)
 {
-	struct vars var;
-	register struct vars *v = &var;
-	int st;
-	size_t n;
-	int backref;
-#	define	LOCALMAT	20
-	regmatch_t mat[LOCALMAT];
-#	define	LOCALMEM	40
-	regoff_t mem[LOCALMEM];
-
-	/* sanity checks */
-	if (re == NULL || string == NULL || re->re_magic != REMAGIC)
-		return REG_INVARG;
-	if (re->re_csize != sizeof(chr))
-		return REG_MIXED;
-
-	/* setup */
-	v->re = re;
-	v->g = (struct guts *)re->re_guts;
-	if ((v->g->cflags&REG_EXPECT) && details == NULL)
-		return REG_INVARG;
-	if (v->g->info&REG_UIMPOSSIBLE)
-		return REG_NOMATCH;
-	backref = (v->g->info&REG_UBACKREF) ? 1 : 0;
-	v->eflags = flags;
-	if (v->g->cflags&REG_NOSUB)
-		nmatch = 0;		/* override client */
-	v->nmatch = nmatch;
-	if (backref) {
-		/* need work area */
-		if (v->g->nsub + 1 <= LOCALMAT)
-			v->pmatch = mat;
-		else
-			v->pmatch = (regmatch_t *)MALLOC((v->g->nsub + 1) *
-							sizeof(regmatch_t));
-		if (v->pmatch == NULL)
-			return REG_ESPACE;
-		v->nmatch = v->g->nsub + 1;
-	} else
-		v->pmatch = pmatch;
-	v->details = details;
-	v->start = (chr *)string;
-	v->stop = (chr *)string + len;
-	v->err = 0;
-	if (backref) {
-		/* need retry memory */
-		assert(v->g->ntree >= 0);
-		n = (size_t)v->g->ntree;
-		if (n <= LOCALMEM)
-			v->mem = mem;
-		else
-			v->mem = (regoff_t *)MALLOC(n*sizeof(regoff_t));
-		if (v->mem == NULL) {
-			if (v->pmatch != pmatch && v->pmatch != mat)
-				FREE(v->pmatch);
-			return REG_ESPACE;
-		}
-	} else
-		v->mem = NULL;
-
-	/* do it */
-	assert(v->g->tree != NULL);
-	if (backref)
-		st = cfind(v, &v->g->tree->cnfa, &v->g->cmap);
-	else
-		st = find(v, &v->g->tree->cnfa, &v->g->cmap);
-
-	/* copy (portion of) match vector over if necessary */
-	if (st == REG_OKAY && v->pmatch != pmatch && nmatch > 0) {
-		zapsubs(pmatch, nmatch);
-		n = (nmatch < v->nmatch) ? nmatch : v->nmatch;
-		memcpy(VS(pmatch), VS(v->pmatch), n*sizeof(regmatch_t));
+    AllocVars(v);
+    int st;
+    size_t n;
+    int backref;
+#define	LOCALMAT	20
+    regmatch_t mat[LOCALMAT];
+#define	LOCALMEM	40
+    regoff_t mem[LOCALMEM];
+
+    /*
+     * Sanity checks.
+     */
+
+    if (re == NULL || string == NULL || re->re_magic != REMAGIC) {
+	FreeVars(v);
+	return REG_INVARG;
+    }
+    if (re->re_csize != sizeof(chr)) {
+	FreeVars(v);
+	return REG_MIXED;
+    }
+
+    /*
+     * Setup.
+     */
+
+    v->re = re;
+    v->g = (struct guts *)re->re_guts;
+    if ((v->g->cflags&REG_EXPECT) && details == NULL) {
+	FreeVars(v);
+	return REG_INVARG;
+    }
+    if (v->g->info&REG_UIMPOSSIBLE) {
+	FreeVars(v);
+	return REG_NOMATCH;
+    }
+    backref = (v->g->info&REG_UBACKREF) ? 1 : 0;
+    v->eflags = flags;
+    if (v->g->cflags&REG_NOSUB) {
+	nmatch = 0;		/* override client */
+    }
+    v->nmatch = nmatch;
+    if (backref) {
+	/*
+	 * Need work area.
+	 */
+
+	if (v->g->nsub + 1 <= LOCALMAT) {
+	    v->pmatch = mat;
+	} else {
+	    v->pmatch = (regmatch_t *)
+		    MALLOC((v->g->nsub + 1) * sizeof(regmatch_t));
 	}
-
-	/* clean up */
-	if (v->pmatch != pmatch && v->pmatch != mat)
+	if (v->pmatch == NULL) {
+	    FreeVars(v);
+	    return REG_ESPACE;
+	}
+	v->nmatch = v->g->nsub + 1;
+    } else {
+	v->pmatch = pmatch;
+    }
+    v->details = details;
+    v->start = (chr *)string;
+    v->stop = (chr *)string + len;
+    v->err = 0;
+    if (backref) {
+	/*
+	 * Need retry memory.
+	 */
+
+	assert(v->g->ntree >= 0);
+	n = (size_t)v->g->ntree;
+	if (n <= LOCALMEM) {
+	    v->mem = mem;
+	} else {
+	    v->mem = (regoff_t *) MALLOC(n*sizeof(regoff_t));
+	}
+	if (v->mem == NULL) {
+	    if (v->pmatch != pmatch && v->pmatch != mat) {
 		FREE(v->pmatch);
-	if (v->mem != NULL && v->mem != mem)
-		FREE(v->mem);
-	return st;
+	    }
+	    FreeVars(v);
+	    return REG_ESPACE;
+	}
+    } else {
+	v->mem = NULL;
+    }
+
+    /*
+     * Do it.
+     */
+
+    assert(v->g->tree != NULL);
+    if (backref) {
+	st = cfind(v, &v->g->tree->cnfa, &v->g->cmap);
+    } else {
+	st = find(v, &v->g->tree->cnfa, &v->g->cmap);
+    }
+
+    /*
+     * Copy (portion of) match vector over if necessary.
+     */
+
+    if (st == REG_OKAY && v->pmatch != pmatch && nmatch > 0) {
+	zapsubs(pmatch, nmatch);
+	n = (nmatch < v->nmatch) ? nmatch : v->nmatch;
+	memcpy(VS(pmatch), VS(v->pmatch), n*sizeof(regmatch_t));
+    }
+
+    /*
+     * Clean up.
+     */
+
+    if (v->pmatch != pmatch && v->pmatch != mat) {
+	FREE(v->pmatch);
+    }
+    if (v->mem != NULL && v->mem != mem) {
+	FREE(v->mem);
+    }
+    FreeVars(v);
+    return st;
 }
-
+
 /*
  - find - find a match for the main NFA (no-complications case)
  ^ static int find(struct vars *, struct cnfa *, struct colormap *);
  */
 static int
-find(v, cnfa, cm)
-struct vars *v;
-struct cnfa *cnfa;
-struct colormap *cm;
+find(
+    struct vars *v,
+    struct cnfa *cnfa,
+    struct colormap *cm)
 {
-	struct dfa *s;
-	struct dfa *d;
-	chr *begin;
-	chr *end = NULL;
-	chr *cold;
-	chr *open;		/* open and close of range of possible starts */
-	chr *close;
-	int hitend;
-	int shorter = (v->g->tree->flags&SHORTER) ? 1 : 0;
-
-	/* first, a shot with the search RE */
-	s = newdfa(v, &v->g->search, cm, &v->dfa1);
-	assert(!(ISERR() && s != NULL));
-	NOERR();
-	MDEBUG(("\nsearch at %ld\n", LOFF(v->start)));
-	cold = NULL;
-	close = shortest(v, s, v->start, v->start, v->stop, &cold, (int *)NULL);
-	freedfa(s);
-	NOERR();
-	if (v->g->cflags&REG_EXPECT) {
-		assert(v->details != NULL);
-		if (cold != NULL)
-			v->details->rm_extend.rm_so = OFF(cold);
-		else
-			v->details->rm_extend.rm_so = OFF(v->stop);
-		v->details->rm_extend.rm_eo = OFF(v->stop);	/* unknown */
+    struct dfa *s;
+    struct dfa *d;
+    chr *begin;
+    chr *end = NULL;
+    chr *cold;
+    chr *open;			/* Open and close of range of possible
+				 * starts */
+    chr *close;
+    int hitend;
+    int shorter = (v->g->tree->flags&SHORTER) ? 1 : 0;
+
+    /*
+     * First, a shot with the search RE.
+     */
+
+    s = newdfa(v, &v->g->search, cm, &v->dfa1);
+    assert(!(ISERR() && s != NULL));
+    NOERR();
+    MDEBUG(("\nsearch at %ld\n", LOFF(v->start)));
+    cold = NULL;
+    close = shortest(v, s, v->start, v->start, v->stop, &cold, NULL);
+    freedfa(s);
+    NOERR();
+    if (v->g->cflags&REG_EXPECT) {
+	assert(v->details != NULL);
+	if (cold != NULL) {
+	    v->details->rm_extend.rm_so = OFF(cold);
+	} else {
+	    v->details->rm_extend.rm_so = OFF(v->stop);
+	}
+	v->details->rm_extend.rm_eo = OFF(v->stop);	/* unknown */
+    }
+    if (close == NULL) {	/* not found */
+	return REG_NOMATCH;
+    }
+    if (v->nmatch == 0) {	/* found, don't need exact location */
+	return REG_OKAY;
+    }
+
+    /*
+     * Find starting point and match.
+     */
+
+    assert(cold != NULL);
+    open = cold;
+    cold = NULL;
+    MDEBUG(("between %ld and %ld\n", LOFF(open), LOFF(close)));
+    d = newdfa(v, cnfa, cm, &v->dfa1);
+    assert(!(ISERR() && d != NULL));
+    NOERR();
+    for (begin = open; begin <= close; begin++) {
+	MDEBUG(("\nfind trying at %ld\n", LOFF(begin)));
+	if (shorter) {
+	    end = shortest(v, d, begin, begin, v->stop, NULL, &hitend);
+	} else {
+	    end = longest(v, d, begin, v->stop, &hitend);
 	}
-	if (close == NULL)		/* not found */
-		return REG_NOMATCH;
-	if (v->nmatch == 0)		/* found, don't need exact location */
-		return REG_OKAY;
-
-	/* find starting point and match */
-	assert(cold != NULL);
-	open = cold;
-	cold = NULL;
-	MDEBUG(("between %ld and %ld\n", LOFF(open), LOFF(close)));
-	d = newdfa(v, cnfa, cm, &v->dfa1);
-	assert(!(ISERR() && d != NULL));
 	NOERR();
-	for (begin = open; begin <= close; begin++) {
-		MDEBUG(("\nfind trying at %ld\n", LOFF(begin)));
-		if (shorter)
-			end = shortest(v, d, begin, begin, v->stop,
-							(chr **)NULL, &hitend);
-		else
-			end = longest(v, d, begin, v->stop, &hitend);
-		NOERR();
-		if (hitend && cold == NULL)
-			cold = begin;
-		if (end != NULL)
-			break;		/* NOTE BREAK OUT */
+	if (hitend && cold == NULL) {
+	    cold = begin;
 	}
-	assert(end != NULL);		/* search RE succeeded so loop should */
-	freedfa(d);
-
-	/* and pin down details */
-	assert(v->nmatch > 0);
-	v->pmatch[0].rm_so = OFF(begin);
-	v->pmatch[0].rm_eo = OFF(end);
-	if (v->g->cflags&REG_EXPECT) {
-		if (cold != NULL)
-			v->details->rm_extend.rm_so = OFF(cold);
-		else
-			v->details->rm_extend.rm_so = OFF(v->stop);
-		v->details->rm_extend.rm_eo = OFF(v->stop);	/* unknown */
+	if (end != NULL) {
+	    break;		/* NOTE BREAK OUT */
 	}
-	if (v->nmatch == 1)		/* no need for submatches */
-		return REG_OKAY;
-
-	/* submatches */
-	zapsubs(v->pmatch, v->nmatch);
-	return dissect(v, v->g->tree, begin, end);
+    }
+    assert(end != NULL);	/* search RE succeeded so loop should */
+    freedfa(d);
+
+    /*
+     * And pin down details.
+     */
+
+    assert(v->nmatch > 0);
+    v->pmatch[0].rm_so = OFF(begin);
+    v->pmatch[0].rm_eo = OFF(end);
+    if (v->g->cflags&REG_EXPECT) {
+	if (cold != NULL) {
+	    v->details->rm_extend.rm_so = OFF(cold);
+	} else {
+	    v->details->rm_extend.rm_so = OFF(v->stop);
+	}
+	v->details->rm_extend.rm_eo = OFF(v->stop);	/* unknown */
+    }
+    if (v->nmatch == 1) {	/* no need for submatches */
+	return REG_OKAY;
+    }
+
+    /*
+     * Submatches.
+     */
+
+    zapsubs(v->pmatch, v->nmatch);
+    return dissect(v, v->g->tree, begin, end);
 }
-
+
 /*
  - cfind - find a match for the main NFA (with complications)
  ^ static int cfind(struct vars *, struct cnfa *, struct colormap *);
  */
 static int
-cfind(v, cnfa, cm)
-struct vars *v;
-struct cnfa *cnfa;
-struct colormap *cm;
+cfind(
+    struct vars *v,
+    struct cnfa *cnfa,
+    struct colormap *cm)
 {
-	struct dfa *s;
-	struct dfa *d;
-	chr *cold = NULL; /* silence gcc 4 warning */
-	int ret;
-
-	s = newdfa(v, &v->g->search, cm, &v->dfa1);
-	NOERR();
-	d = newdfa(v, cnfa, cm, &v->dfa2);
-	if (ISERR()) {
-		assert(d == NULL);
-		freedfa(s);
-		return v->err;
-	}
-
-	ret = cfindloop(v, cnfa, cm, d, s, &cold);
-
-	freedfa(d);
+    struct dfa *s;
+    struct dfa *d;
+    chr *cold = NULL; /* silence gcc 4 warning */
+    int ret;
+
+    s = newdfa(v, &v->g->search, cm, &v->dfa1);
+    NOERR();
+    d = newdfa(v, cnfa, cm, &v->dfa2);
+    if (ISERR()) {
+	assert(d == NULL);
 	freedfa(s);
-	NOERR();
-	if (v->g->cflags&REG_EXPECT) {
-		assert(v->details != NULL);
-		if (cold != NULL)
-			v->details->rm_extend.rm_so = OFF(cold);
-		else
-			v->details->rm_extend.rm_so = OFF(v->stop);
-		v->details->rm_extend.rm_eo = OFF(v->stop);	/* unknown */
+	return v->err;
+    }
+
+    ret = cfindloop(v, cnfa, cm, d, s, &cold);
+
+    freedfa(d);
+    freedfa(s);
+    NOERR();
+    if (v->g->cflags&REG_EXPECT) {
+	assert(v->details != NULL);
+	if (cold != NULL) {
+	    v->details->rm_extend.rm_so = OFF(cold);
+	} else {
+	    v->details->rm_extend.rm_so = OFF(v->stop);
 	}
-	return ret;
+	v->details->rm_extend.rm_eo = OFF(v->stop);	/* unknown */
+    }
+    return ret;
 }
-
+
 /*
  - cfindloop - the heart of cfind
  ^ static int cfindloop(struct vars *, struct cnfa *, struct colormap *,
  ^	struct dfa *, struct dfa *, chr **);
  */
 static int
-cfindloop(v, cnfa, cm, d, s, coldp)
-struct vars *v;
-struct cnfa *cnfa;
-struct colormap *cm;
-struct dfa *d;
-struct dfa *s;
-chr **coldp;			/* where to put coldstart pointer */
+cfindloop(
+    struct vars *v,
+    struct cnfa *cnfa,
+    struct colormap *cm,
+    struct dfa *d,
+    struct dfa *s,
+    chr **coldp)		/* where to put coldstart pointer */
 {
-	chr *begin;
-	chr *end;
-	chr *cold;
-	chr *open;		/* open and close of range of possible starts */
-	chr *close;
-	chr *estart;
-	chr *estop;
-	int er;
-	int shorter = v->g->tree->flags&SHORTER;
-	int hitend;
-
-	assert(d != NULL && s != NULL);
+    chr *begin;
+    chr *end;
+    chr *cold;
+    chr *open;			/* Open and close of range of possible
+				 * starts */
+    chr *close;
+    chr *estart;
+    chr *estop;
+    int er;
+    int shorter = v->g->tree->flags&SHORTER;
+    int hitend;
+
+    assert(d != NULL && s != NULL);
+    cold = NULL;
+    close = v->start;
+    do {
+	MDEBUG(("\ncsearch at %ld\n", LOFF(close)));
+	close = shortest(v, s, close, close, v->stop, &cold, NULL);
+	if (close == NULL) {
+	    break;		/* NOTE BREAK */
+	}
+	assert(cold != NULL);
+	open = cold;
 	cold = NULL;
-	close = v->start;
-	do {
-		MDEBUG(("\ncsearch at %ld\n", LOFF(close)));
-		close = shortest(v, s, close, close, v->stop, &cold, (int *)NULL);
-		if (close == NULL)
-			break;				/* NOTE BREAK */
-		assert(cold != NULL);
-		open = cold;
-		cold = NULL;
-		MDEBUG(("cbetween %ld and %ld\n", LOFF(open), LOFF(close)));
-		for (begin = open; begin <= close; begin++) {
-			MDEBUG(("\ncfind trying at %ld\n", LOFF(begin)));
-			estart = begin;
-			estop = v->stop;
-			for (;;) {
-				if (shorter)
-					end = shortest(v, d, begin, estart,
-						estop, (chr **)NULL, &hitend);
-				else
-					end = longest(v, d, begin, estop,
-								&hitend);
-				if (hitend && cold == NULL)
-					cold = begin;
-				if (end == NULL)
-					break;		/* NOTE BREAK OUT */
-				MDEBUG(("tentative end %ld\n", LOFF(end)));
-				zapsubs(v->pmatch, v->nmatch);
-				zapmem(v, v->g->tree);
-				er = cdissect(v, v->g->tree, begin, end);
-				if (er == REG_OKAY) {
-					if (v->nmatch > 0) {
-						v->pmatch[0].rm_so = OFF(begin);
-						v->pmatch[0].rm_eo = OFF(end);
-					}
-					*coldp = cold;
-					return REG_OKAY;
-				}
-				if (er != REG_NOMATCH) {
-					ERR(er);
-					return er;
-				}
-				if ((shorter) ? end == estop : end == begin) {
-					/* no point in trying again */
-					*coldp = cold;
-					return REG_NOMATCH;
-				}
-				/* go around and try again */
-				if (shorter)
-					estart = end + 1;
-				else
-					estop = end - 1;
-			}
+	MDEBUG(("cbetween %ld and %ld\n", LOFF(open), LOFF(close)));
+	for (begin = open; begin <= close; begin++) {
+	    MDEBUG(("\ncfind trying at %ld\n", LOFF(begin)));
+	    estart = begin;
+	    estop = v->stop;
+	    for (;;) {
+		if (shorter) {
+		    end = shortest(v, d, begin, estart, estop, NULL, &hitend);
+		} else {
+		    end = longest(v, d, begin, estop, &hitend);
+		}
+		if (hitend && cold == NULL) {
+		    cold = begin;
+		}
+		if (end == NULL) {
+		    break;	/* NOTE BREAK OUT */
 		}
-	} while (close < v->stop);
 
-	*coldp = cold;
-	return REG_NOMATCH;
-}
+		MDEBUG(("tentative end %ld\n", LOFF(end)));
+		zapsubs(v->pmatch, v->nmatch);
+		zapmem(v, v->g->tree);
+		er = cdissect(v, v->g->tree, begin, end);
+		if (er == REG_OKAY) {
+		    if (v->nmatch > 0) {
+			v->pmatch[0].rm_so = OFF(begin);
+			v->pmatch[0].rm_eo = OFF(end);
+		    }
+		    *coldp = cold;
+		    return REG_OKAY;
+		}
+		if (er != REG_NOMATCH) {
+		    ERR(er);
+		    return er;
+		}
+		if ((shorter) ? end == estop : end == begin) {
+		    /*
+		     * No point in trying again.
+		     */
+
+		    *coldp = cold;
+		    return REG_NOMATCH;
+		}
+
+		/*
+		 * Go around and try again
+		 */
+
+		if (shorter) {
+		    estart = end + 1;
+		} else {
+		    estop = end - 1;
+		}
+	    }
+	}
+    } while (close < v->stop);
 
+    *coldp = cold;
+    return REG_NOMATCH;
+}
+
 /*
  - zapsubs - initialize the subexpression matches to "no match"
  ^ static VOID zapsubs(regmatch_t *, size_t);
  */
-static VOID
-zapsubs(p, n)
-regmatch_t *p;
-size_t n;
+static void
+zapsubs(
+    regmatch_t *p,
+    size_t n)
 {
-	size_t i;
+    size_t i;
 
-	for (i = n-1; i > 0; i--) {
-		p[i].rm_so = -1;
-		p[i].rm_eo = -1;
-	}
+    for (i = n-1; i > 0; i--) {
+	p[i].rm_so = -1;
+	p[i].rm_eo = -1;
+    }
 }
-
+
 /*
  - zapmem - initialize the retry memory of a subtree to zeros
  ^ static VOID zapmem(struct vars *, struct subre *);
  */
-static VOID
-zapmem(v, t)
-struct vars *v;
-struct subre *t;
+static void
+zapmem(
+    struct vars *v,
+    struct subre *t)
 {
-	if (t == NULL)
-		return;
-
-	assert(v->mem != NULL);
-	v->mem[t->retry] = 0;
-	if (t->op == '(') {
-		assert(t->subno > 0);
-		v->pmatch[t->subno].rm_so = -1;
+    if (t == NULL) {
+	return;
+    }
+
+    assert(v->mem != NULL);
+    v->mem[t->retry] = 0;
+    if (t->op == '(') {
+	assert(t->subno > 0);
+	v->pmatch[t->subno].rm_so = -1;
 		v->pmatch[t->subno].rm_eo = -1;
-	}
-
-	if (t->left != NULL)
-		zapmem(v, t->left);
-	if (t->right != NULL)
-		zapmem(v, t->right);
+    }
+
+    if (t->left != NULL) {
+	zapmem(v, t->left);
+    }
+    if (t->right != NULL) {
+	zapmem(v, t->right);
+    }
 }
-
+
 /*
  - subset - set any subexpression relevant to a successful subre
  ^ static VOID subset(struct vars *, struct subre *, chr *, chr *);
  */
-static VOID
-subset(v, sub, begin, end)
-struct vars *v;
-struct subre *sub;
-chr *begin;
-chr *end;
+static void
+subset(
+    struct vars *v,
+    struct subre *sub,
+    chr *begin,
+    chr *end)
 {
-	int n = sub->subno;
+    int n = sub->subno;
 
-	assert(n > 0);
-	if ((size_t)n >= v->nmatch)
-		return;
+    assert(n > 0);
+    if ((size_t)n >= v->nmatch) {
+	return;
+    }
 
-	MDEBUG(("setting %d\n", n));
-	v->pmatch[n].rm_so = OFF(begin);
-	v->pmatch[n].rm_eo = OFF(end);
+    MDEBUG(("setting %d\n", n));
+    v->pmatch[n].rm_so = OFF(begin);
+    v->pmatch[n].rm_eo = OFF(end);
 }
-
+
 /*
  - dissect - determine subexpression matches (uncomplicated case)
  ^ static int dissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-dissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+dissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	assert(t != NULL);
-	MDEBUG(("dissect %ld-%ld\n", LOFF(begin), LOFF(end)));
-
-	switch (t->op) {
-	case '=':		/* terminal node */
-		assert(t->left == NULL && t->right == NULL);
-		return REG_OKAY;	/* no action, parent did the work */
-		break;
-	case '|':		/* alternation */
-		assert(t->left != NULL);
-		return altdissect(v, t, begin, end);
-		break;
-	case 'b':		/* back ref -- shouldn't be calling us! */
-		return REG_ASSERT;
-		break;
-	case '.':		/* concatenation */
-		assert(t->left != NULL && t->right != NULL);
-		return condissect(v, t, begin, end);
-		break;
-	case '(':		/* capturing */
-		assert(t->left != NULL && t->right == NULL);
-		assert(t->subno > 0);
-		subset(v, t, begin, end);
-		return dissect(v, t->left, begin, end);
-		break;
-	default:
-		return REG_ASSERT;
-		break;
-	}
+    assert(t != NULL);
+    MDEBUG(("dissect %ld-%ld\n", LOFF(begin), LOFF(end)));
+
+    switch (t->op) {
+    case '=':			/* terminal node */
+	assert(t->left == NULL && t->right == NULL);
+	return REG_OKAY;	/* no action, parent did the work */
+    case '|':			/* alternation */
+	assert(t->left != NULL);
+	return altdissect(v, t, begin, end);
+    case 'b':			/* back ref -- shouldn't be calling us! */
+	return REG_ASSERT;
+    case '.':			/* concatenation */
+	assert(t->left != NULL && t->right != NULL);
+	return condissect(v, t, begin, end);
+    case '(':			/* capturing */
+	assert(t->left != NULL && t->right == NULL);
+	assert(t->subno > 0);
+	subset(v, t, begin, end);
+	return dissect(v, t->left, begin, end);
+    default:
+	return REG_ASSERT;
+    }
 }
-
+
 /*
  - condissect - determine concatenation subexpression matches (uncomplicated)
  ^ static int condissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-condissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+condissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	struct dfa *d;
-	struct dfa *d2;
-	chr *mid;
-	int i;
-	int shorter = (t->left->flags&SHORTER) ? 1 : 0;
-	chr *stop = (shorter) ? end : begin;
-
-	assert(t->op == '.');
-	assert(t->left != NULL && t->left->cnfa.nstates > 0);
-	assert(t->right != NULL && t->right->cnfa.nstates > 0);
-
-	d = newdfa(v, &t->left->cnfa, &v->g->cmap, &v->dfa1);
-	NOERR();
-	d2 = newdfa(v, &t->right->cnfa, &v->g->cmap, &v->dfa2);
-	if (ISERR()) {
-		assert(d2 == NULL);
-		freedfa(d);
-		return v->err;
+    struct dfa *d;
+    struct dfa *d2;
+    chr *mid;
+    int i;
+    int shorter = (t->left->flags&SHORTER) ? 1 : 0;
+    chr *stop = (shorter) ? end : begin;
+
+    assert(t->op == '.');
+    assert(t->left != NULL && t->left->cnfa.nstates > 0);
+    assert(t->right != NULL && t->right->cnfa.nstates > 0);
+
+    d = newdfa(v, &t->left->cnfa, &v->g->cmap, &v->dfa1);
+    NOERR();
+    d2 = newdfa(v, &t->right->cnfa, &v->g->cmap, &v->dfa2);
+    if (ISERR()) {
+	assert(d2 == NULL);
+	freedfa(d);
+	return v->err;
+    }
+
+    /*
+     * Pick a tentative midpoint.
+     */
+
+    if (shorter) {
+	mid = shortest(v, d, begin, begin, end, NULL, NULL);
+    } else {
+	mid = longest(v, d, begin, end, NULL);
+    }
+    if (mid == NULL) {
+	freedfa(d);
+	freedfa(d2);
+	return REG_ASSERT;
+    }
+    MDEBUG(("tentative midpoint %ld\n", LOFF(mid)));
+
+    /*
+     * Iterate until satisfaction or failure.
+     */
+
+    while (longest(v, d2, mid, end, NULL) != end) {
+	/*
+	 * That midpoint didn't work, find a new one.
+	 */
+
+	if (mid == stop) {
+	    /*
+	     * All possibilities exhausted!
+	     */
+
+	    MDEBUG(("no midpoint!\n"));
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_ASSERT;
 	}
-
-	/* pick a tentative midpoint */
-	if (shorter)
-		mid = shortest(v, d, begin, begin, end, (chr **)NULL,
-								(int *)NULL);
-	else
-		mid = longest(v, d, begin, end, (int *)NULL);
-	if (mid == NULL) {
-		freedfa(d);
-		freedfa(d2);
-		return REG_ASSERT;
+	if (shorter) {
+	    mid = shortest(v, d, begin, mid+1, end, NULL, NULL);
+	} else {
+	    mid = longest(v, d, begin, mid-1, NULL);
 	}
-	MDEBUG(("tentative midpoint %ld\n", LOFF(mid)));
-
-	/* iterate until satisfaction or failure */
-	while (longest(v, d2, mid, end, (int *)NULL) != end) {
-		/* that midpoint didn't work, find a new one */
-		if (mid == stop) {
-			/* all possibilities exhausted! */
-			MDEBUG(("no midpoint!\n"));
-			freedfa(d);
-			freedfa(d2);
-			return REG_ASSERT;
-		}
-		if (shorter)
-			mid = shortest(v, d, begin, mid+1, end, (chr **)NULL,
-								(int *)NULL);
-		else
-			mid = longest(v, d, begin, mid-1, (int *)NULL);
-		if (mid == NULL) {
-			/* failed to find a new one! */
-			MDEBUG(("failed midpoint!\n"));
-			freedfa(d);
-			freedfa(d2);
-			return REG_ASSERT;
-		}
-		MDEBUG(("new midpoint %ld\n", LOFF(mid)));
+	if (mid == NULL) {
+	    /*
+	     * Failed to find a new one!
+	     */
+
+	    MDEBUG(("failed midpoint!\n"));
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_ASSERT;
 	}
-
-	/* satisfaction */
-	MDEBUG(("successful\n"));
-	freedfa(d);
-	freedfa(d2);
-	i = dissect(v, t->left, begin, mid);
-	if (i != REG_OKAY)
-		return i;
-	return dissect(v, t->right, mid, end);
+	MDEBUG(("new midpoint %ld\n", LOFF(mid)));
+    }
+
+    /*
+     * Satisfaction.
+     */
+
+    MDEBUG(("successful\n"));
+    freedfa(d);
+    freedfa(d2);
+    i = dissect(v, t->left, begin, mid);
+    if (i != REG_OKAY) {
+	return i;
+    }
+    return dissect(v, t->right, mid, end);
 }
-
+
 /*
  - altdissect - determine alternative subexpression matches (uncomplicated)
  ^ static int altdissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-altdissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+altdissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	struct dfa *d;
-	int i;
-
-	assert(t != NULL);
-	assert(t->op == '|');
-
-	for (i = 0; t != NULL; t = t->right, i++) {
-		MDEBUG(("trying %dth\n", i));
-		assert(t->left != NULL && t->left->cnfa.nstates > 0);
-		d = newdfa(v, &t->left->cnfa, &v->g->cmap, &v->dfa1);
-		if (ISERR())
-			return v->err;
-		if (longest(v, d, begin, end, (int *)NULL) == end) {
-			MDEBUG(("success\n"));
-			freedfa(d);
-			return dissect(v, t->left, begin, end);
-		}
-		freedfa(d);
+    struct dfa *d;
+    int i;
+
+    assert(t != NULL);
+    assert(t->op == '|');
+
+    for (i = 0; t != NULL; t = t->right, i++) {
+	MDEBUG(("trying %dth\n", i));
+	assert(t->left != NULL && t->left->cnfa.nstates > 0);
+	d = newdfa(v, &t->left->cnfa, &v->g->cmap, &v->dfa1);
+	if (ISERR()) {
+	    return v->err;
+	}
+	if (longest(v, d, begin, end, NULL) == end) {
+	    MDEBUG(("success\n"));
+	    freedfa(d);
+	    return dissect(v, t->left, begin, end);
 	}
-	return REG_ASSERT;	/* none of them matched?!? */
+	freedfa(d);
+    }
+    return REG_ASSERT;		/* none of them matched?!? */
 }
-
+
 /*
  - cdissect - determine subexpression matches (with complications)
- * The retry memory stores the offset of the trial midpoint from begin, 
- * plus 1 so that 0 uniquely means "clean slate".
+ * The retry memory stores the offset of the trial midpoint from begin, plus 1
+ * so that 0 uniquely means "clean slate".
  ^ static int cdissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-cdissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+cdissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	int er;
-
-	assert(t != NULL);
-	MDEBUG(("cdissect %ld-%ld %c\n", LOFF(begin), LOFF(end), t->op));
-
-	switch (t->op) {
-	case '=':		/* terminal node */
-		assert(t->left == NULL && t->right == NULL);
-		return REG_OKAY;	/* no action, parent did the work */
-		break;
-	case '|':		/* alternation */
-		assert(t->left != NULL);
-		return caltdissect(v, t, begin, end);
-		break;
-	case 'b':		/* back ref -- shouldn't be calling us! */
-		assert(t->left == NULL && t->right == NULL);
-		return cbrdissect(v, t, begin, end);
-		break;
-	case '.':		/* concatenation */
-		assert(t->left != NULL && t->right != NULL);
-		return ccondissect(v, t, begin, end);
-		break;
-	case '(':		/* capturing */
-		assert(t->left != NULL && t->right == NULL);
-		assert(t->subno > 0);
-		er = cdissect(v, t->left, begin, end);
-		if (er == REG_OKAY)
-			subset(v, t, begin, end);
-		return er;
-		break;
-	default:
-		return REG_ASSERT;
-		break;
+    int er;
+
+    assert(t != NULL);
+    MDEBUG(("cdissect %ld-%ld %c\n", LOFF(begin), LOFF(end), t->op));
+
+    switch (t->op) {
+    case '=':			/* terminal node */
+	assert(t->left == NULL && t->right == NULL);
+	return REG_OKAY;	/* no action, parent did the work */
+    case '|':			/* alternation */
+	assert(t->left != NULL);
+	return caltdissect(v, t, begin, end);
+    case 'b':			/* back ref -- shouldn't be calling us! */
+	assert(t->left == NULL && t->right == NULL);
+	return cbrdissect(v, t, begin, end);
+    case '.':			/* concatenation */
+	assert(t->left != NULL && t->right != NULL);
+	return ccondissect(v, t, begin, end);
+    case '(':			/* capturing */
+	assert(t->left != NULL && t->right == NULL);
+	assert(t->subno > 0);
+	er = cdissect(v, t->left, begin, end);
+	if (er == REG_OKAY) {
+	    subset(v, t, begin, end);
 	}
+	return er;
+    default:
+	return REG_ASSERT;
+    }
 }
-
+
 /*
  - ccondissect - concatenation subexpression matches (with complications)
- * The retry memory stores the offset of the trial midpoint from begin, 
- * plus 1 so that 0 uniquely means "clean slate".
+ * The retry memory stores the offset of the trial midpoint from begin, plus 1
+ * so that 0 uniquely means "clean slate".
  ^ static int ccondissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-ccondissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+ccondissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	struct dfa *d;
-	struct dfa *d2;
-	chr *mid;
-	int er;
-
-	assert(t->op == '.');
-	assert(t->left != NULL && t->left->cnfa.nstates > 0);
-	assert(t->right != NULL && t->right->cnfa.nstates > 0);
+    struct dfa *d, *d2;
+    chr *mid;
+    int er;
+
+    assert(t->op == '.');
+    assert(t->left != NULL && t->left->cnfa.nstates > 0);
+    assert(t->right != NULL && t->right->cnfa.nstates > 0);
+
+    if (t->left->flags&SHORTER) { /* reverse scan */
+	return crevdissect(v, t, begin, end);
+    }
+
+    d = newdfa(v, &t->left->cnfa, &v->g->cmap, DOMALLOC);
+    if (ISERR()) {
+	return v->err;
+    }
+    d2 = newdfa(v, &t->right->cnfa, &v->g->cmap, DOMALLOC);
+    if (ISERR()) {
+	freedfa(d);
+	return v->err;
+    }
+    MDEBUG(("cconcat %d\n", t->retry));
 
-	if (t->left->flags&SHORTER)		/* reverse scan */
-		return crevdissect(v, t, begin, end);
+    /*
+     * Pick a tentative midpoint.
+     */
 
-	d = newdfa(v, &t->left->cnfa, &v->g->cmap, DOMALLOC);
-	if (ISERR())
-		return v->err;
-	d2 = newdfa(v, &t->right->cnfa, &v->g->cmap, DOMALLOC);
-	if (ISERR()) {
-		freedfa(d);
-		return v->err;
+    if (v->mem[t->retry] == 0) {
+	mid = longest(v, d, begin, end, NULL);
+	if (mid == NULL) {
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_NOMATCH;
 	}
-	MDEBUG(("cconcat %d\n", t->retry));
-
-	/* pick a tentative midpoint */
-	if (v->mem[t->retry] == 0) {
-		mid = longest(v, d, begin, end, (int *)NULL);
-		if (mid == NULL) {
-			freedfa(d);
-			freedfa(d2);
-			return REG_NOMATCH;
+	MDEBUG(("tentative midpoint %ld\n", LOFF(mid)));
+	v->mem[t->retry] = (mid - begin) + 1;
+    } else {
+	mid = begin + (v->mem[t->retry] - 1);
+	MDEBUG(("working midpoint %ld\n", LOFF(mid)));
+    }
+
+    /*
+     * Iterate until satisfaction or failure.
+     */
+
+    for (;;) {
+	/*
+	 * Try this midpoint on for size.
+	 */
+
+	if (longest(v, d2, mid, end, NULL) == end) {
+	    er = cdissect(v, t->left, begin, mid);
+	    if (er == REG_OKAY) {
+		er = cdissect(v, t->right, mid, end);
+		if (er == REG_OKAY) {
+		    /*
+		     * Satisfaction.
+		     */
+		    
+		    MDEBUG(("successful\n"));
+		    freedfa(d);
+		    freedfa(d2);
+		    return REG_OKAY;
 		}
-		MDEBUG(("tentative midpoint %ld\n", LOFF(mid)));
-		v->mem[t->retry] = (mid - begin) + 1;
-	} else {
-		mid = begin + (v->mem[t->retry] - 1);
-		MDEBUG(("working midpoint %ld\n", LOFF(mid)));
+	    }
+	    if ((er != REG_OKAY) && (er != REG_NOMATCH)) {
+		freedfa(d);
+		freedfa(d2);
+		return er;
+	    }
 	}
 
-	/* iterate until satisfaction or failure */
-	for (;;) {
-		/* try this midpoint on for size */
-		if (longest(v, d2, mid, end, NULL) == end) {
-			er = cdissect(v, t->left, begin, mid);
-			if (er == REG_OKAY) {
-				er = cdissect(v, t->right, mid, end);
-				if (er == REG_OKAY) {
-					/* satisfaction */
-					MDEBUG(("successful\n"));
-					freedfa(d);
-					freedfa(d2);
-					return REG_OKAY;
-				}
-			}
-			if ((er != REG_OKAY) && (er != REG_NOMATCH)) {
-				freedfa(d);
-				freedfa(d2);
-				return er;
-			}
-		}
+	/*
+	 * That midpoint didn't work, find a new one.
+	 */
 
-		/* that midpoint didn't work, find a new one */
-		if (mid == begin) {
-			/* all possibilities exhausted */
-			MDEBUG(("%d no midpoint\n", t->retry));
-			freedfa(d);
-			freedfa(d2);
-			return REG_NOMATCH;
-		}
-		mid = longest(v, d, begin, mid-1, (int *)NULL);
-		if (mid == NULL) {
-			/* failed to find a new one */
-			MDEBUG(("%d failed midpoint\n", t->retry));
-			freedfa(d);
-			freedfa(d2);
-			return REG_NOMATCH;
-		}
-		MDEBUG(("%d: new midpoint %ld\n", t->retry, LOFF(mid)));
-		v->mem[t->retry] = (mid - begin) + 1;
-		zapmem(v, t->left);
-		zapmem(v, t->right);
+	if (mid == begin) {
+	    /*
+	     * All possibilities exhausted.
+	     */
+
+	    MDEBUG(("%d no midpoint\n", t->retry));
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_NOMATCH;
 	}
+	mid = longest(v, d, begin, mid-1, NULL);
+	if (mid == NULL) {
+	    /*
+	     * Failed to find a new one.
+	     */
+
+	    MDEBUG(("%d failed midpoint\n", t->retry));
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_NOMATCH;
+	}
+	MDEBUG(("%d: new midpoint %ld\n", t->retry, LOFF(mid)));
+	v->mem[t->retry] = (mid - begin) + 1;
+	zapmem(v, t->left);
+	zapmem(v, t->right);
+    }
 }
-
+
 /*
  - crevdissect - determine backref shortest-first subexpression matches
- * The retry memory stores the offset of the trial midpoint from begin, 
- * plus 1 so that 0 uniquely means "clean slate".
+ * The retry memory stores the offset of the trial midpoint from begin, plus 1
+ * so that 0 uniquely means "clean slate".
  ^ static int crevdissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-crevdissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+crevdissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	struct dfa *d;
-	struct dfa *d2;
-	chr *mid;
-	int er;
+    struct dfa *d;
+    struct dfa *d2;
+    chr *mid;
+    int er;
+
+    assert(t->op == '.');
+    assert(t->left != NULL && t->left->cnfa.nstates > 0);
+    assert(t->right != NULL && t->right->cnfa.nstates > 0);
+    assert(t->left->flags&SHORTER);
+
+    /*
+     * Concatenation -- need to split the substring between parts.
+     */
+
+    d = newdfa(v, &t->left->cnfa, &v->g->cmap, DOMALLOC);
+    if (ISERR()) {
+	return v->err;
+    }
+    d2 = newdfa(v, &t->right->cnfa, &v->g->cmap, DOMALLOC);
+    if (ISERR()) {
+	freedfa(d);
+	return v->err;
+    }
+    MDEBUG(("crev %d\n", t->retry));
 
-	assert(t->op == '.');
-	assert(t->left != NULL && t->left->cnfa.nstates > 0);
-	assert(t->right != NULL && t->right->cnfa.nstates > 0);
-	assert(t->left->flags&SHORTER);
+    /*
+     * Pick a tentative midpoint.
+     */
 
-	/* concatenation -- need to split the substring between parts */
-	d = newdfa(v, &t->left->cnfa, &v->g->cmap, DOMALLOC);
-	if (ISERR())
-		return v->err;
-	d2 = newdfa(v, &t->right->cnfa, &v->g->cmap, DOMALLOC);
-	if (ISERR()) {
-		freedfa(d);
-		return v->err;
+    if (v->mem[t->retry] == 0) {
+	mid = shortest(v, d, begin, begin, end, NULL, NULL);
+	if (mid == NULL) {
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_NOMATCH;
 	}
-	MDEBUG(("crev %d\n", t->retry));
-
-	/* pick a tentative midpoint */
-	if (v->mem[t->retry] == 0) {
-		mid = shortest(v, d, begin, begin, end, (chr **)NULL, (int *)NULL);
-		if (mid == NULL) {
-			freedfa(d);
-			freedfa(d2);
-			return REG_NOMATCH;
+	MDEBUG(("tentative midpoint %ld\n", LOFF(mid)));
+	v->mem[t->retry] = (mid - begin) + 1;
+    } else {
+	mid = begin + (v->mem[t->retry] - 1);
+	MDEBUG(("working midpoint %ld\n", LOFF(mid)));
+    }
+
+    /*
+     * Iterate until satisfaction or failure.
+     */
+
+    for (;;) {
+	/*
+	 * Try this midpoint on for size.
+	 */
+
+	if (longest(v, d2, mid, end, NULL) == end) {
+	    er = cdissect(v, t->left, begin, mid);
+	    if (er == REG_OKAY) {
+		er = cdissect(v, t->right, mid, end);
+		if (er == REG_OKAY) {
+		    /*
+		     * Satisfaction.
+		     */
+
+		    MDEBUG(("successful\n"));
+		    freedfa(d);
+		    freedfa(d2);
+		    return REG_OKAY;
 		}
-		MDEBUG(("tentative midpoint %ld\n", LOFF(mid)));
-		v->mem[t->retry] = (mid - begin) + 1;
-	} else {
-		mid = begin + (v->mem[t->retry] - 1);
-		MDEBUG(("working midpoint %ld\n", LOFF(mid)));
+	    }
+	    if (er != REG_OKAY && er != REG_NOMATCH) {
+		freedfa(d);
+		freedfa(d2);
+		return er;
+	    }
 	}
 
-	/* iterate until satisfaction or failure */
-	for (;;) {
-		/* try this midpoint on for size */
-		if (longest(v, d2, mid, end, NULL) == end) {
-			er = cdissect(v, t->left, begin, mid);
-			if (er == REG_OKAY) {
-				er = cdissect(v, t->right, mid, end);
-				if (er == REG_OKAY) {
-					/* satisfaction */
-					MDEBUG(("successful\n"));
-					freedfa(d);
-					freedfa(d2);
-					return REG_OKAY;
-				}
-			}
-			if (er != REG_OKAY && er != REG_NOMATCH) {
-				freedfa(d);
-				freedfa(d2);
-				return er;
-			}
-		}
+	/*
+	 * That midpoint didn't work, find a new one.
+	 */
 
-		/* that midpoint didn't work, find a new one */
-		if (mid == end) {
-			/* all possibilities exhausted */
-			MDEBUG(("%d no midpoint\n", t->retry));
-			freedfa(d);
-			freedfa(d2);
-			return REG_NOMATCH;
-		}
-		mid = shortest(v, d, begin, mid+1, end, (chr **)NULL, (int *)NULL);
-		if (mid == NULL) {
-			/* failed to find a new one */
-			MDEBUG(("%d failed midpoint\n", t->retry));
-			freedfa(d);
-			freedfa(d2);
-			return REG_NOMATCH;
-		}
-		MDEBUG(("%d: new midpoint %ld\n", t->retry, LOFF(mid)));
-		v->mem[t->retry] = (mid - begin) + 1;
-		zapmem(v, t->left);
-		zapmem(v, t->right);
+	if (mid == end) {
+	    /*
+	     * All possibilities exhausted.
+	     */
+
+	    MDEBUG(("%d no midpoint\n", t->retry));
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_NOMATCH;
 	}
+	mid = shortest(v, d, begin, mid+1, end, NULL, NULL);
+	if (mid == NULL) {
+	    /*
+	     * Failed to find a new one.
+	     */
+
+	    MDEBUG(("%d failed midpoint\n", t->retry));
+	    freedfa(d);
+	    freedfa(d2);
+	    return REG_NOMATCH;
+	}
+	MDEBUG(("%d: new midpoint %ld\n", t->retry, LOFF(mid)));
+	v->mem[t->retry] = (mid - begin) + 1;
+	zapmem(v, t->left);
+	zapmem(v, t->right);
+    }
 }
-
+
 /*
  - cbrdissect - determine backref subexpression matches
  ^ static int cbrdissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-cbrdissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+cbrdissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	int i;
-	int n = t->subno;
-	size_t len;
-	chr *paren;
-	chr *p;
-	chr *stop;
-	int min = t->min;
-	int max = t->max;
-
-	assert(t != NULL);
-	assert(t->op == 'b');
-	assert(n >= 0);
-	assert((size_t)n < v->nmatch);
-
-	MDEBUG(("cbackref n%d %d{%d-%d}\n", t->retry, n, min, max));
-
-	if (v->pmatch[n].rm_so == -1)
-		return REG_NOMATCH;
-	paren = v->start + v->pmatch[n].rm_so;
-	len = v->pmatch[n].rm_eo - v->pmatch[n].rm_so;
-
-	/* no room to maneuver -- retries are pointless */
-	if (v->mem[t->retry])
-		return REG_NOMATCH;
-	v->mem[t->retry] = 1;
-
-	/* special-case zero-length string */
-	if (len == 0) {
-		if (begin == end)
-			return REG_OKAY;
-		return REG_NOMATCH;
+    int i;
+    int n = t->subno;
+    size_t len;
+    chr *paren;
+    chr *p;
+    chr *stop;
+    int min = t->min;
+    int max = t->max;
+
+    assert(t != NULL);
+    assert(t->op == 'b');
+    assert(n >= 0);
+    assert((size_t)n < v->nmatch);
+
+    MDEBUG(("cbackref n%d %d{%d-%d}\n", t->retry, n, min, max));
+
+    if (v->pmatch[n].rm_so == -1) {
+	return REG_NOMATCH;
+    }
+    paren = v->start + v->pmatch[n].rm_so;
+    len = v->pmatch[n].rm_eo - v->pmatch[n].rm_so;
+
+    /*
+     * No room to maneuver -- retries are pointless.
+     */
+
+    if (v->mem[t->retry]) {
+	return REG_NOMATCH;
+    }
+    v->mem[t->retry] = 1;
+
+    /*
+     * Special-case zero-length string.
+     */
+
+    if (len == 0) {
+	if (begin == end) {
+	    return REG_OKAY;
 	}
+	return REG_NOMATCH;
+    }
+
+    /*
+     * And too-short string.
+     */
+
+    assert(end >= begin);
+    if ((size_t)(end - begin) < len) {
+	return REG_NOMATCH;
+    }
+    stop = end - len;
+
+    /*
+     * Count occurrences.
+     */
 
-	/* and too-short string */
-	assert(end >= begin);
-	if ((size_t)(end - begin) < len)
-		return REG_NOMATCH;
-	stop = end - len;
-
-	/* count occurrences */
-	i = 0;
-	for (p = begin; p <= stop && (i < max || max == INFINITY); p += len) {
-		if ((*v->g->compare)(paren, p, len) != 0)
-				break;
-		i++;
+    i = 0;
+    for (p = begin; p <= stop && (i < max || max == INFINITY); p += len) {
+	if ((*v->g->compare)(paren, p, len) != 0) {
+	    break;
 	}
-	MDEBUG(("cbackref found %d\n", i));
-
-	/* and sort it out */
-	if (p != end)			/* didn't consume all of it */
-		return REG_NOMATCH;
-	if (min <= i && (i <= max || max == INFINITY))
-		return REG_OKAY;
-	return REG_NOMATCH;		/* out of range */
-}
+	i++;
+    }
+    MDEBUG(("cbackref found %d\n", i));
 
+    /*
+     * And sort it out.
+     */
+
+    if (p != end) {		/* didn't consume all of it */
+	return REG_NOMATCH;
+    }
+    if (min <= i && (i <= max || max == INFINITY)) {
+	return REG_OKAY;
+    }
+    return REG_NOMATCH;		/* out of range */
+}
+
 /*
  - caltdissect - determine alternative subexpression matches (w. complications)
  ^ static int caltdissect(struct vars *, struct subre *, chr *, chr *);
  */
 static int			/* regexec return code */
-caltdissect(v, t, begin, end)
-struct vars *v;
-struct subre *t;
-chr *begin;			/* beginning of relevant substring */
-chr *end;			/* end of same */
+caltdissect(
+    struct vars *v,
+    struct subre *t,
+    chr *begin,			/* beginning of relevant substring */
+    chr *end)			/* end of same */
 {
-	struct dfa *d;
-	int er;
-#	define	UNTRIED	0	/* not yet tried at all */
-#	define	TRYING	1	/* top matched, trying submatches */
-#	define	TRIED	2	/* top didn't match or submatches exhausted */
-
-	if (t == NULL)
-		return REG_NOMATCH;
-	assert(t->op == '|');
-	if (v->mem[t->retry] == TRIED)
-		return caltdissect(v, t->right, begin, end);
-
-	MDEBUG(("calt n%d\n", t->retry));
-	assert(t->left != NULL);
+    struct dfa *d;
+    int er;
+#define	UNTRIED	0		/* not yet tried at all */
+#define	TRYING	1		/* top matched, trying submatches */
+#define	TRIED	2		/* top didn't match or submatches exhausted */
 
-	if (v->mem[t->retry] == UNTRIED) {
-		d = newdfa(v, &t->left->cnfa, &v->g->cmap, DOMALLOC);
-		if (ISERR())
-			return v->err;
-		if (longest(v, d, begin, end, (int *)NULL) != end) {
-			freedfa(d);
-			v->mem[t->retry] = TRIED;
-			return caltdissect(v, t->right, begin, end);
-		}
-		freedfa(d);
-		MDEBUG(("calt matched\n"));
-		v->mem[t->retry] = TRYING;
-	}
+    if (t == NULL) {
+	return REG_NOMATCH;
+    }
+    assert(t->op == '|');
+    if (v->mem[t->retry] == TRIED) {
+	return caltdissect(v, t->right, begin, end);
+    }
 
-	er = cdissect(v, t->left, begin, end);
-	if (er != REG_NOMATCH)
-		return er;
+    MDEBUG(("calt n%d\n", t->retry));
+    assert(t->left != NULL);
 
-	v->mem[t->retry] = TRIED;
-	return caltdissect(v, t->right, begin, end);
-}
+    if (v->mem[t->retry] == UNTRIED) {
+	d = newdfa(v, &t->left->cnfa, &v->g->cmap, DOMALLOC);
+	if (ISERR()) {
+	    return v->err;
+	}
+	if (longest(v, d, begin, end, NULL) != end) {
+	    freedfa(d);
+	    v->mem[t->retry] = TRIED;
+	    return caltdissect(v, t->right, begin, end);
+	}
+	freedfa(d);
+	MDEBUG(("calt matched\n"));
+	v->mem[t->retry] = TRYING;
+    }
 
+    er = cdissect(v, t->left, begin, end);
+    if (er != REG_NOMATCH) {
+	return er;
+    }
 
+    v->mem[t->retry] = TRIED;
+    return caltdissect(v, t->right, begin, end);
+}
 
 #include "rege_dfa.c"
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regfree.c b/generic/regfree.c
index 17a7389..b0aaa70 100644
--- a/generic/regfree.c
+++ b/generic/regfree.c
@@ -2,20 +2,20 @@
  * regfree - free an RE
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -27,13 +27,11 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *
- *
- * You might think that this could be incorporated into regcomp.c, and
- * that would be a reasonable idea... except that this is a generic
- * function (with a generic name), applicable to all compiled REs
- * regardless of the size of their characters, whereas the stuff in
- * regcomp.c gets compiled once per character size.
+ * You might think that this could be incorporated into regcomp.c, and that
+ * would be a reasonable idea... except that this is a generic function (with
+ * a generic name), applicable to all compiled REs regardless of the size of
+ * their characters, whereas the stuff in regcomp.c gets compiled once per
+ * character size.
  */
 
 #include "regguts.h"
@@ -43,11 +41,20 @@
  *
  * Ignoring invocation with NULL is a convenience.
  */
-VOID
-regfree(re)
-regex_t *re;
+void
+regfree(
+    regex_t *re)
 {
-	if (re == NULL)
-		return;
-	(*((struct fns *)re->re_fns)->free)(re);
+    if (re == NULL) {
+	return;
+    }
+    (*((struct fns *)re->re_fns)->free)(re);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regfronts.c b/generic/regfronts.c
index 82f48e2..5003297 100644
--- a/generic/regfronts.c
+++ b/generic/regfronts.c
@@ -1,24 +1,24 @@
 /*
  * regcomp and regexec - front ends to re_ routines
  *
- * Mostly for implementation of backward-compatibility kludges.  Note
- * that these routines exist ONLY in char versions.
+ * Mostly for implementation of backward-compatibility kludges. Note that
+ * these routines exist ONLY in char versions.
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -29,55 +29,63 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
 #include "regguts.h"
-
+
 /*
  - regcomp - compile regular expression
  */
 int
-regcomp(re, str, flags)
-regex_t *re;
-CONST char *str;
-int flags;
+regcomp(
+    regex_t *re,
+    CONST char *str,
+    int flags)
 {
-	size_t len;
-	int f = flags;
+    size_t len;
+    int f = flags;
 
-	if (f&REG_PEND) {
-		len = re->re_endp - str;
-		f &= ~REG_PEND;
-	} else
-		len = strlen(str);
+    if (f&REG_PEND) {
+	len = re->re_endp - str;
+	f &= ~REG_PEND;
+    } else {
+	len = strlen(str);
+    }
 
-	return re_comp(re, str, len, f);
+    return re_comp(re, str, len, f);
 }
-
+
 /*
  - regexec - execute regular expression
  */
 int
-regexec(re, str, nmatch, pmatch, flags)
-regex_t *re;
-CONST char *str;
-size_t nmatch;
-regmatch_t pmatch[];
-int flags;
+regexec(
+    regex_t *re,
+    CONST char *str,
+    size_t nmatch,
+    regmatch_t pmatch[],
+    int flags)
 {
-	CONST char *start;
-	size_t len;
-	int f = flags;
+    CONST char *start;
+    size_t len;
+    int f = flags;
 
-	if (f&REG_STARTEND) {
-		start = str + pmatch[0].rm_so;
-		len = pmatch[0].rm_eo - pmatch[0].rm_so;
-		f &= ~REG_STARTEND;
-	} else {
-		start = str;
-		len = strlen(str);
-	}
+    if (f & REG_STARTEND) {
+	start = str + pmatch[0].rm_so;
+	len = pmatch[0].rm_eo - pmatch[0].rm_so;
+	f &= ~REG_STARTEND;
+    } else {
+	start = str;
+	len = strlen(str);
+    }
 
-	return re_exec(re, start, len, nmatch, pmatch, f);
+    return re_exec(re, start, len, nmatch, pmatch, f);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/regguts.h b/generic/regguts.h
index c77a8fc..67e3d03 100644
--- a/generic/regguts.h
+++ b/generic/regguts.h
@@ -2,20 +2,20 @@
  * Internal interface definitions, etc., for the reg package
  *
  * Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
  * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
@@ -28,17 +28,13 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-
-
 /*
- * Environmental customization.  It should not (I hope) be necessary to
- * alter the file you are now reading -- regcustom.h should handle it all,
- * given care here and elsewhere.
+ * Environmental customization. It should not (I hope) be necessary to alter
+ * the file you are now reading -- regcustom.h should handle it all, given
+ * care here and elsewhere.
  */
 #include "regcustom.h"
 
-
-
 /*
  * Things that regcustom.h might override.
  */
@@ -54,34 +50,34 @@
 
 /* assertions */
 #ifndef assert
-#	ifndef REG_DEBUG
-#	ifndef NDEBUG
-#	define	NDEBUG		/* no assertions */
-#	endif
-#	endif
+#ifndef REG_DEBUG
+#ifndef NDEBUG
+#define	NDEBUG		/* no assertions */
+#endif
+#endif /* !REG_DEBUG */
 #include <assert.h>
 #endif
 
 /* voids */
 #ifndef VOID
-#define	VOID	void			/* for function return values */
+#define	VOID	void		/* for function return values */
 #endif
 #ifndef DISCARD
-#define	DISCARD	VOID			/* for throwing values away */
+#define	DISCARD	void		/* for throwing values away */
 #endif
 #ifndef PVOID
-#define	PVOID	VOID *			/* generic pointer */
+#define	PVOID	void *		/* generic pointer */
 #endif
 #ifndef VS
-#define	VS(x)	((PVOID)(x))		/* cast something to generic ptr */
+#define	VS(x)	((void*)(x))	/* cast something to generic ptr */
 #endif
 #ifndef NOPARMS
-#define	NOPARMS	VOID			/* for empty parm lists */
+#define	NOPARMS	void		/* for empty parm lists */
 #endif
 
 /* const */
 #ifndef CONST
-#define	CONST	const			/* for old compilers, might be empty */
+#define	CONST	const		/* for old compilers, might be empty */
 #endif
 
 /* function-pointer declarator */
@@ -109,11 +105,9 @@
 #include <limits.h>
 #endif
 #ifndef _POSIX2_RE_DUP_MAX
-#define	_POSIX2_RE_DUP_MAX	255	/* normally from <limits.h> */
+#define	_POSIX2_RE_DUP_MAX 255	/* normally from <limits.h> */
 #endif
 
-
-
 /*
  * misc
  */
@@ -126,8 +120,6 @@
 
 #define	REMAGIC	0xfed7		/* magic number for main struct */
 
-
-
 /*
  * debugging facilities
  */
@@ -141,8 +133,6 @@
 #define	MDEBUG(arglist)	{}
 #endif
 
-
-
 /*
  * bitmap manipulation
  */
@@ -150,14 +140,13 @@
 #define	BSET(uv, sn)	((uv)[(sn)/UBITS] |= (unsigned)1 << ((sn)%UBITS))
 #define	ISBSET(uv, sn)	((uv)[(sn)/UBITS] & ((unsigned)1 << ((sn)%UBITS)))
 
-
-
 /*
- * We dissect a chr into byts for colormap table indexing.  Here we define
- * a byt, which will be the same as a byte on most machines...  The exact
- * size of a byt is not critical, but about 8 bits is good, and extraction
- * of 8-bit chunks is sometimes especially fast.
+ * We dissect a chr into byts for colormap table indexing. Here we define a
+ * byt, which will be the same as a byte on most machines... The exact size of
+ * a byt is not critical, but about 8 bits is good, and extraction of 8-bit
+ * chunks is sometimes especially fast.
  */
+
 #ifndef BYTBITS
 #define	BYTBITS	8		/* bits in a byt */
 #endif
@@ -166,69 +155,66 @@
 #define	NBYTS	((CHRBITS+BYTBITS-1)/BYTBITS)
 /* the definition of GETCOLOR(), below, assumes NBYTS <= 4 */
 
-
-
 /*
  * As soon as possible, we map chrs into equivalence classes -- "colors" --
  * which are of much more manageable number.
  */
+
 typedef short color;		/* colors of characters */
 typedef int pcolor;		/* what color promotes to */
 #define	COLORLESS	(-1)	/* impossible color */
 #define	WHITE		0	/* default color, parent of all others */
 
-
-
 /*
- * A colormap is a tree -- more precisely, a DAG -- indexed at each level
- * by a byt of the chr, to map the chr to a color efficiently.  Because
- * lower sections of the tree can be shared, it can exploit the usual
- * sparseness of such a mapping table.  The tree is always NBYTS levels
- * deep (in the past it was shallower during construction but was "filled"
- * to full depth at the end of that); areas that are unaltered as yet point
- * to "fill blocks" which are entirely WHITE in color.
+ * A colormap is a tree -- more precisely, a DAG -- indexed at each level by a
+ * byt of the chr, to map the chr to a color efficiently. Because lower
+ * sections of the tree can be shared, it can exploit the usual sparseness of
+ * such a mapping table. The tree is always NBYTS levels deep (in the past it
+ * was shallower during construction but was "filled" to full depth at the end
+ * of that); areas that are unaltered as yet point to "fill blocks" which are
+ * entirely WHITE in color.
  */
 
 /* the tree itself */
 struct colors {
-	color ccolor[BYTTAB];
+    color ccolor[BYTTAB];
 };
 struct ptrs {
-	union tree *pptr[BYTTAB];
+    union tree *pptr[BYTTAB];
 };
 union tree {
-	struct colors colors;
-	struct ptrs ptrs;
+    struct colors colors;
+    struct ptrs ptrs;
 };
 #define	tcolor	colors.ccolor
 #define	tptr	ptrs.pptr
 
-/* internal per-color structure for the color machinery */
+/* Internal per-color descriptor structure for the color machinery */
 struct colordesc {
-	uchr nchrs;		/* number of chars of this color */
-	color sub;		/* open subcolor (if any); free chain ptr */
-#		define	NOSUB	COLORLESS
-	struct arc *arcs;	/* color chain */
-	int flags;
-#		define	FREECOL	01	/* currently free */
-#		define	PSEUDO	02	/* pseudocolor, no real chars */
-#	define	UNUSEDCOLOR(cd)	((cd)->flags&FREECOL)
-	union tree *block;	/* block of solid color, if any */
+    uchr nchrs;			/* number of chars of this color */
+    color sub;			/* open subcolor (if any); free chain ptr */
+#define	NOSUB	COLORLESS
+    struct arc *arcs;		/* color chain */
+    int flags;
+#define	FREECOL	01		/* currently free */
+#define	PSEUDO	02		/* pseudocolor, no real chars */
+#define	UNUSEDCOLOR(cd)	((cd)->flags&FREECOL)
+    union tree *block;		/* block of solid color, if any */
 };
 
 /* the color map itself */
 struct colormap {
-	int magic;
-#		define	CMMAGIC	0x876
-	struct vars *v;			/* for compile error reporting */
-	size_t ncds;			/* number of colordescs */
-	size_t max;			/* highest in use */
-	color free;			/* beginning of free chain (if non-0) */
-	struct colordesc *cd;
-#	define	CDEND(cm)	(&(cm)->cd[(cm)->max + 1])
-#		define	NINLINECDS	((size_t)10)
-	struct colordesc cdspace[NINLINECDS];
-	union tree tree[NBYTS];		/* tree top, plus fill blocks */
+    int magic;
+#define	CMMAGIC	0x876
+    struct vars *v;		/* for compile error reporting */
+    size_t ncds;		/* number of colordescs */
+    size_t max;			/* highest in use */
+    color free;			/* beginning of free chain (if non-0) */
+    struct colordesc *cd;
+#define	CDEND(cm)	(&(cm)->cd[(cm)->max + 1])
+#define	NINLINECDS	((size_t)10)
+    struct colordesc cdspace[NINLINECDS];
+    union tree tree[NBYTS];	/* tree top, plus fill blocks */
 };
 
 /* optimization magic to do fast chr->color mapping */
@@ -247,182 +233,196 @@ struct colormap {
 #define	GETCOLOR(cm, c)	((cm)->tree->tptr[B3(c)]->tptr[B2(c)]->tptr[B1(c)]->tcolor[B0(c)])
 #endif
 
-
-
 /*
  * Interface definitions for locale-interface functions in locale.c.
- * Multi-character collating elements (MCCEs) cause most of the trouble.
  */
+
+/* Representation of a set of characters. */
 struct cvec {
-	int nchrs;		/* number of chrs */
-	int chrspace;		/* number of chrs possible */
-	chr *chrs;		/* pointer to vector of chrs */
-	int nranges;		/* number of ranges (chr pairs) */
-	int rangespace;		/* number of chrs possible */
-	chr *ranges;		/* pointer to vector of chr pairs */
-	int nmcces;		/* number of MCCEs */
-	int mccespace;		/* number of MCCEs possible */
-	int nmccechrs;		/* number of chrs used for MCCEs */
-	chr *mcces[1];		/* pointers to 0-terminated MCCEs */
-				/* and both batches of chrs are on the end */
+    int nchrs;			/* number of chrs */
+    int chrspace;		/* number of chrs possible */
+    chr *chrs;			/* pointer to vector of chrs */
+    int nranges;		/* number of ranges (chr pairs) */
+    int rangespace;		/* number of chrs possible */
+    chr *ranges;		/* pointer to vector of chr pairs */
 };
 
-/* caution:  this value cannot be changed easily */
-#define	MAXMCCE	2		/* length of longest MCCE */
-
-
-
 /*
- * definitions for NFA internal representation
+ * definitions for non-deterministic finite autmaton (NFA) internal
+ * representation
  *
- * Having a "from" pointer within each arc may seem redundant, but it
- * saves a lot of hassle.
+ * Having a "from" pointer within each arc may seem redundant, but it saves a
+ * lot of hassle.
  */
+
 struct state;
 
 struct arc {
-	int type;
-#		define	ARCFREE	'\0'
-	color co;
-	struct state *from;	/* where it's from (and contained within) */
-	struct state *to;	/* where it's to */
-	struct arc *outchain;	/* *from's outs chain or free chain */
-#	define	freechain	outchain
-	struct arc *inchain;	/* *to's ins chain */
-	struct arc *colorchain;	/* color's arc chain */
-	struct arc *colorchain_rev;	/* back-link in color's arc chain */
+    int type;
+#define	ARCFREE	'\0'
+    color co;
+    struct state *from;		/* where it's from (and contained within) */
+    struct state *to;		/* where it's to */
+    struct arc *outchain;	/* *from's outs chain or free chain */
+#define	freechain	outchain
+    struct arc *inchain;	/* *to's ins chain */
+    struct arc *colorchain;	/* color's arc chain */
+    struct arc *colorchainRev;	/* back-link in color's arc chain */
 };
 
 struct arcbatch {		/* for bulk allocation of arcs */
-	struct arcbatch *next;
-#	define	ABSIZE	10
-	struct arc a[ABSIZE];
+    struct arcbatch *next;
+#define	ABSIZE	10
+    struct arc a[ABSIZE];
 };
 
 struct state {
-	int no;
-#		define	FREESTATE	(-1)
-	char flag;		/* marks special states */
-	int nins;		/* number of inarcs */
-	struct arc *ins;	/* chain of inarcs */
-	int nouts;		/* number of outarcs */
-	struct arc *outs;	/* chain of outarcs */
-	struct arc *free;	/* chain of free arcs */
-	struct state *tmp;	/* temporary for traversal algorithms */
-	struct state *next;	/* chain for traversing all */
-	struct state *prev;	/* back chain */
-	struct arcbatch oas;	/* first arcbatch, avoid malloc in easy case */
-	int noas;		/* number of arcs used in first arcbatch */
+    int no;
+#define	FREESTATE	(-1)
+    char flag;			/* marks special states */
+    int nins;			/* number of inarcs */
+    struct arc *ins;		/* chain of inarcs */
+    int nouts;			/* number of outarcs */
+    struct arc *outs;		/* chain of outarcs */
+    struct arc *free;		/* chain of free arcs */
+    struct state *tmp;		/* temporary for traversal algorithms */
+    struct state *next;		/* chain for traversing all */
+    struct state *prev;		/* back chain */
+    struct arcbatch oas;	/* first arcbatch, avoid malloc in easy case */
+    int noas;			/* number of arcs used in first arcbatch */
 };
 
 struct nfa {
-	struct state *pre;	/* pre-initial state */
-	struct state *init;	/* initial state */
-	struct state *final;	/* final state */
-	struct state *post;	/* post-final state */
-	int nstates;		/* for numbering states */
-	struct state *states;	/* state-chain header */
-	struct state *slast;	/* tail of the chain */
-	struct state *free;	/* free list */
-	struct colormap *cm;	/* the color map */
-	color bos[2];		/* colors, if any, assigned to BOS and BOL */
-	color eos[2];		/* colors, if any, assigned to EOS and EOL */
-	size_t size;		/* current NFA size; differs from nstates as
-				 * it will be incremented by its children */
-	struct vars *v;		/* simplifies compile error reporting */
-	struct nfa *parent;	/* parent NFA, if any */
+    struct state *pre;		/* pre-initial state */
+    struct state *init;		/* initial state */
+    struct state *final;	/* final state */
+    struct state *post;		/* post-final state */
+    int nstates;		/* for numbering states */
+    struct state *states;	/* state-chain header */
+    struct state *slast;	/* tail of the chain */
+    struct state *free;		/* free list */
+    struct colormap *cm;	/* the color map */
+    color bos[2];		/* colors, if any, assigned to BOS and BOL */
+    color eos[2];		/* colors, if any, assigned to EOS and EOL */
+    size_t size;		/* Current NFA size; differs from nstates as
+				 * it also counts the number of states created
+				 * by children of this state. */
+    struct vars *v;		/* simplifies compile error reporting */
+    struct nfa *parent;		/* parent NFA, if any */
 };
 
-
-
 /*
  * definitions for compacted NFA
  */
+
 struct carc {
-	color co;		/* COLORLESS is list terminator */
-	int to;			/* state number */
+    color co;			/* COLORLESS is list terminator */
+    int to;			/* state number */
 };
 
 struct cnfa {
-	int nstates;		/* number of states */
-	int ncolors;		/* number of colors */
-	int flags;
-#		define	HASLACONS	01	/* uses lookahead constraints */
-	int pre;		/* setup state number */
-	int post;		/* teardown state number */
-	color bos[2];		/* colors, if any, assigned to BOS and BOL */
-	color eos[2];		/* colors, if any, assigned to EOS and EOL */
-	struct carc **states;	/* vector of pointers to outarc lists */
-	struct carc *arcs;	/* the area for the lists */
+    int nstates;		/* number of states */
+    int ncolors;		/* number of colors */
+    int flags;
+#define	HASLACONS	01	/* uses lookahead constraints */
+    int pre;			/* setup state number */
+    int post;			/* teardown state number */
+    color bos[2];		/* colors, if any, assigned to BOS and BOL */
+    color eos[2];		/* colors, if any, assigned to EOS and EOL */
+    struct carc **states;	/* vector of pointers to outarc lists */
+    struct carc *arcs;		/* the area for the lists */
 };
 #define	ZAPCNFA(cnfa)	((cnfa).nstates = 0)
 #define	NULLCNFA(cnfa)	((cnfa).nstates == 0)
 
+/*
+ * Used to limit the maximum NFA size to something sane. [Bug 1810264]
+ */
 
-/* Used to limit the maximum NFA size */
 #ifndef REG_MAX_STATES
-#define REG_MAX_STATES 100000
+#   define REG_MAX_STATES	100000
 #endif
 
-
 /*
  * subexpression tree
  */
+
 struct subre {
-	char op;		/* '|', '.' (concat), 'b' (backref), '(', '=' */
-	char flags;
-#		define	LONGER	01	/* prefers longer match */
-#		define	SHORTER	02	/* prefers shorter match */
-#		define	MIXED	04	/* mixed preference below */
-#		define	CAP	010	/* capturing parens below */
-#		define	BACKR	020	/* back reference below */
-#		define	INUSE	0100	/* in use in final tree */
-#		define	LOCAL	03	/* bits which may not propagate up */
-#		define	LMIX(f)	((f)<<2)	/* LONGER -> MIXED */
-#		define	SMIX(f)	((f)<<1)	/* SHORTER -> MIXED */
-#		define	UP(f)	(((f)&~LOCAL) | (LMIX(f) & SMIX(f) & MIXED))
-#		define	MESSY(f)	((f)&(MIXED|CAP|BACKR))
-#		define	PREF(f)	((f)&LOCAL)
-#		define	PREF2(f1, f2)	((PREF(f1) != 0) ? PREF(f1) : PREF(f2))
-#		define	COMBINE(f1, f2)	(UP((f1)|(f2)) | PREF2(f1, f2))
-	short retry;		/* index into retry memory */
-	int subno;		/* subexpression number (for 'b' and '(') */
-	short min;		/* min repetitions, for backref only */
-	short max;		/* max repetitions, for backref only */
-	struct subre *left;	/* left child, if any (also freelist chain) */
-	struct subre *right;	/* right child, if any */
-	struct state *begin;	/* outarcs from here... */
-	struct state *end;	/* ...ending in inarcs here */
-	struct cnfa cnfa;	/* compacted NFA, if any */
-	struct subre *chain;	/* for bookkeeping and error cleanup */
+    char op;			/* '|', '.' (concat), 'b' (backref), '(',
+				 * '=' */
+    char flags;
+#define	LONGER	01		/* prefers longer match */
+#define	SHORTER	02		/* prefers shorter match */
+#define	MIXED	04		/* mixed preference below */
+#define	CAP	010		/* capturing parens below */
+#define	BACKR	020		/* back reference below */
+#define	INUSE	0100		/* in use in final tree */
+#define	LOCAL	03		/* bits which may not propagate up */
+#define	LMIX(f)	((f)<<2)	/* LONGER -> MIXED */
+#define	SMIX(f)	((f)<<1)	/* SHORTER -> MIXED */
+#define	UP(f)	(((f)&~LOCAL) | (LMIX(f) & SMIX(f) & MIXED))
+#define	MESSY(f)	((f)&(MIXED|CAP|BACKR))
+#define	PREF(f)	((f)&LOCAL)
+#define	PREF2(f1, f2)	((PREF(f1) != 0) ? PREF(f1) : PREF(f2))
+#define	COMBINE(f1, f2)	(UP((f1)|(f2)) | PREF2(f1, f2))
+    short retry;		/* index into retry memory */
+    int subno;			/* subexpression number (for 'b' and '(') */
+    short min;			/* min repetitions, for backref only */
+    short max;			/* max repetitions, for backref only */
+    struct subre *left;		/* left child, if any (also freelist chain) */
+    struct subre *right;	/* right child, if any */
+    struct state *begin;	/* outarcs from here... */
+    struct state *end;		/* ...ending in inarcs here */
+    struct cnfa cnfa;		/* compacted NFA, if any */
+    struct subre *chain;	/* for bookkeeping and error cleanup */
 };
 
-
-
 /*
- * table of function pointers for generic manipulation functions
- * A regex_t's re_fns points to one of these.
+ * table of function pointers for generic manipulation functions. A regex_t's
+ * re_fns points to one of these.
  */
+
 struct fns {
-	VOID FUNCPTR(free, (regex_t *));
+    VOID FUNCPTR(free, (regex_t *));
 };
 
-
-
 /*
  * the insides of a regex_t, hidden behind a void *
  */
+
 struct guts {
-	int magic;
-#		define	GUTSMAGIC	0xfed9
-	int cflags;		/* copy of compile flags */
-	long info;		/* copy of re_info */
-	size_t nsub;		/* copy of re_nsub */
-	struct subre *tree;
-	struct cnfa search;	/* for fast preliminary search */
-	int ntree;
-	struct colormap cmap;
-	int FUNCPTR(compare, (CONST chr *, CONST chr *, size_t));
-	struct subre *lacons;	/* lookahead-constraint vector */
-	int nlacons;		/* size of lacons */
+    int magic;
+#define	GUTSMAGIC	0xfed9
+    int cflags;			/* copy of compile flags */
+    long info;			/* copy of re_info */
+    size_t nsub;		/* copy of re_nsub */
+    struct subre *tree;
+    struct cnfa search;		/* for fast preliminary search */
+    int ntree;
+    struct colormap cmap;
+    int FUNCPTR(compare, (CONST chr *, CONST chr *, size_t));
+    struct subre *lacons;	/* lookahead-constraint vector */
+    int nlacons;		/* size of lacons */
 };
+
+/*
+ * Magic for allocating a variable workspace. This default version is
+ * stack-hungry.
+ */
+
+#ifndef AllocVars
+#define AllocVars(vPtr) \
+    struct vars var; \
+    register struct vars *vPtr = &var
+#endif
+#ifndef FreeVars
+#define FreeVars(vPtr) ((void) 0)
+#endif
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tcl.decls b/generic/tcl.decls
index b8d8d7d..7f49002 100644
--- a/generic/tcl.decls
+++ b/generic/tcl.decls
@@ -7,6 +7,8 @@
 #
 # Copyright (c) 1998-1999 by Scriptics Corporation.
 # Copyright (c) 2001, 2002 by Kevin B. Kenny.  All rights reserved.
+# Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
+#
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 
@@ -1033,7 +1035,7 @@ declare 286 {
     void Tcl_AppendObjToObj(Tcl_Obj *objPtr, Tcl_Obj *appendObjPtr)
 }
 declare 287 {
-    Tcl_Encoding Tcl_CreateEncoding(Tcl_EncodingType *typePtr)
+    Tcl_Encoding Tcl_CreateEncoding(const Tcl_EncodingType *typePtr)
 }
 declare 288 {
     void Tcl_CreateThreadExitHandler(Tcl_ExitProc *proc, ClientData clientData)
@@ -1405,59 +1407,59 @@ declare 397 {
     int Tcl_ChannelBuffered(Tcl_Channel chan)
 }
 declare 398 {
-    CONST84_RETURN char *Tcl_ChannelName(Tcl_ChannelType *chanTypePtr)
+    CONST84_RETURN char *Tcl_ChannelName(const Tcl_ChannelType *chanTypePtr)
 }
 declare 399 {
     Tcl_ChannelTypeVersion Tcl_ChannelVersion(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 400 {
     Tcl_DriverBlockModeProc *Tcl_ChannelBlockModeProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 401 {
     Tcl_DriverCloseProc *Tcl_ChannelCloseProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 402 {
     Tcl_DriverClose2Proc *Tcl_ChannelClose2Proc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 403 {
     Tcl_DriverInputProc *Tcl_ChannelInputProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 404 {
     Tcl_DriverOutputProc *Tcl_ChannelOutputProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 405 {
     Tcl_DriverSeekProc *Tcl_ChannelSeekProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 406 {
     Tcl_DriverSetOptionProc *Tcl_ChannelSetOptionProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 407 {
     Tcl_DriverGetOptionProc *Tcl_ChannelGetOptionProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 408 {
     Tcl_DriverWatchProc *Tcl_ChannelWatchProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 409 {
     Tcl_DriverGetHandleProc *Tcl_ChannelGetHandleProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 410 {
     Tcl_DriverFlushProc *Tcl_ChannelFlushProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 declare 411 {
     Tcl_DriverHandlerProc *Tcl_ChannelHandlerProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 
 # Introduced in 8.4a2
@@ -1760,34 +1762,323 @@ declare 492 {
 # TIP#91 (back-compat enhancements for channels) dkf
 declare 493 {
     Tcl_DriverWideSeekProc *Tcl_ChannelWideSeekProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
+}
+
+# ----- BASELINE -- FOR -- 8.4.0 ----- #
+
+# TIP#111 (dictionaries) dkf
+declare 494 {
+    int Tcl_DictObjPut(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+	    Tcl_Obj *keyPtr, Tcl_Obj *valuePtr)
+}
+declare 495 {
+    int Tcl_DictObjGet(Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr,
+	    Tcl_Obj **valuePtrPtr)
+}
+declare 496 {
+    int Tcl_DictObjRemove(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+	    Tcl_Obj *keyPtr)
+}
+declare 497 {
+    int Tcl_DictObjSize(Tcl_Interp *interp, Tcl_Obj *dictPtr, int *sizePtr)
+}
+declare 498 {
+    int Tcl_DictObjFirst(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+	    Tcl_DictSearch *searchPtr,
+	    Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr, int *donePtr)
+}
+declare 499 {
+    void Tcl_DictObjNext(Tcl_DictSearch *searchPtr,
+	    Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr, int *donePtr)
+}
+declare 500 {
+    void Tcl_DictObjDone(Tcl_DictSearch *searchPtr)
+}
+declare 501 {
+    int Tcl_DictObjPutKeyList(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+	    int keyc, Tcl_Obj *const *keyv, Tcl_Obj *valuePtr)
+}
+declare 502 {
+    int Tcl_DictObjRemoveKeyList(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+	    int keyc, Tcl_Obj *const *keyv)
+}
+declare 503 {
+    Tcl_Obj *Tcl_NewDictObj(void)
+}
+declare 504 {
+    Tcl_Obj *Tcl_DbNewDictObj(const char *file, int line)
+}
+
+# TIP#59 (configuration reporting) akupries
+declare 505 {
+    void Tcl_RegisterConfig(Tcl_Interp *interp, const char *pkgName,
+	    Tcl_Config *configuration, const char *valEncoding)
+}
+
+# TIP #139 (partial exposure of namespace API - transferred from tclInt.decls)
+# dkf, API by Brent Welch?
+declare 506 {
+    Tcl_Namespace *Tcl_CreateNamespace(Tcl_Interp *interp, const char *name,
+	    ClientData clientData, Tcl_NamespaceDeleteProc *deleteProc)
+}
+declare 507 {
+    void Tcl_DeleteNamespace(Tcl_Namespace *nsPtr)
+}
+declare 508 {
+    int Tcl_AppendExportList(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+	    Tcl_Obj *objPtr)
+}
+declare 509 {
+    int Tcl_Export(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+	    const char *pattern, int resetListFirst)
+}
+declare 510 {
+    int Tcl_Import(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+	    const char *pattern, int allowOverwrite)
+}
+declare 511 {
+    int Tcl_ForgetImport(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+	    const char *pattern)
+}
+declare 512 {
+    Tcl_Namespace *Tcl_GetCurrentNamespace(Tcl_Interp *interp)
+}
+declare 513 {
+    Tcl_Namespace *Tcl_GetGlobalNamespace(Tcl_Interp *interp)
+}
+declare 514 {
+    Tcl_Namespace *Tcl_FindNamespace(Tcl_Interp *interp, const char *name,
+	    Tcl_Namespace *contextNsPtr, int flags)
+}
+declare 515 {
+    Tcl_Command Tcl_FindCommand(Tcl_Interp *interp, const char *name,
+	    Tcl_Namespace *contextNsPtr, int flags)
+}
+declare 516 {
+    Tcl_Command Tcl_GetCommandFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr)
+}
+declare 517 {
+    void Tcl_GetCommandFullName(Tcl_Interp *interp, Tcl_Command command,
+	    Tcl_Obj *objPtr)
+}
+
+# TIP#137 (encoding-aware source command) dgp for Anton Kovalenko
+declare 518 {
+    int Tcl_FSEvalFileEx(Tcl_Interp *interp, Tcl_Obj *fileName,
+	    const char *encodingName)
 }
 
-# Slots 494 to 553 are taken already by 8.5
-# #111 - Dicts            (494 ... 504)
-#  #59 - Config           (505)
-# #139 - Namespace API    (506 ... 517)
-# #137 - source -encoding (518)
-# #121 - ExitProc         (519)
-# #121 - Resource Limits  (520 ... 534)
-# #226 - S/R Interp State (535 ... 537)
-# #227 - S/G Return Opts  (538 ... 539)
-# #235 - Ensemble C API   (540 ... 551)
-# #233 - Virtualized Time (552 ... 553)
+# TIP#121 (exit handler) dkf for Joe Mistachkin
+declare 519 {
+    Tcl_ExitProc *Tcl_SetExitProc(Tcl_ExitProc *proc)
+}
+
+# TIP#143 (resource limits) dkf
+declare 520 {
+    void Tcl_LimitAddHandler(Tcl_Interp *interp, int type,
+	    Tcl_LimitHandlerProc *handlerProc, ClientData clientData,
+	    Tcl_LimitHandlerDeleteProc *deleteProc)
+}
+declare 521 {
+    void Tcl_LimitRemoveHandler(Tcl_Interp *interp, int type,
+	    Tcl_LimitHandlerProc *handlerProc, ClientData clientData)
+}
+declare 522 {
+    int Tcl_LimitReady(Tcl_Interp *interp)
+}
+declare 523 {
+    int Tcl_LimitCheck(Tcl_Interp *interp)
+}
+declare 524 {
+    int Tcl_LimitExceeded(Tcl_Interp *interp)
+}
+declare 525 {
+    void Tcl_LimitSetCommands(Tcl_Interp *interp, int commandLimit)
+}
+declare 526 {
+    void Tcl_LimitSetTime(Tcl_Interp *interp, Tcl_Time *timeLimitPtr)
+}
+declare 527 {
+    void Tcl_LimitSetGranularity(Tcl_Interp *interp, int type, int granularity)
+}
+declare 528 {
+    int Tcl_LimitTypeEnabled(Tcl_Interp *interp, int type)
+}
+declare 529 {
+    int Tcl_LimitTypeExceeded(Tcl_Interp *interp, int type)
+}
+declare 530 {
+    void Tcl_LimitTypeSet(Tcl_Interp *interp, int type)
+}
+declare 531 {
+    void Tcl_LimitTypeReset(Tcl_Interp *interp, int type)
+}
+declare 532 {
+    int Tcl_LimitGetCommands(Tcl_Interp *interp)
+}
+declare 533 {
+    void Tcl_LimitGetTime(Tcl_Interp *interp, Tcl_Time *timeLimitPtr)
+}
+declare 534 {
+    int Tcl_LimitGetGranularity(Tcl_Interp *interp, int type)
+}
+
+# TIP#226 (interpreter result state management) dgp
+declare 535 {
+    Tcl_InterpState Tcl_SaveInterpState(Tcl_Interp *interp, int status)
+}
+declare 536 {
+    int Tcl_RestoreInterpState(Tcl_Interp *interp, Tcl_InterpState state)
+}
+declare 537 {
+    void Tcl_DiscardInterpState(Tcl_InterpState state)
+}
+
+# TIP#227 (return options interface) dgp
+declare 538 {
+    int Tcl_SetReturnOptions(Tcl_Interp *interp, Tcl_Obj *options)
+}
+declare 539 {
+    Tcl_Obj *Tcl_GetReturnOptions(Tcl_Interp *interp, int result)
+}
+
+# TIP#235 (ensembles) dkf
+declare 540 {
+    int Tcl_IsEnsemble(Tcl_Command token)
+}
+declare 541 {
+    Tcl_Command Tcl_CreateEnsemble(Tcl_Interp *interp, const char *name,
+	    Tcl_Namespace *namespacePtr, int flags)
+}
+declare 542 {
+    Tcl_Command Tcl_FindEnsemble(Tcl_Interp *interp, Tcl_Obj *cmdNameObj,
+	    int flags)
+}
+declare 543 {
+    int Tcl_SetEnsembleSubcommandList(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Obj *subcmdList)
+}
+declare 544 {
+    int Tcl_SetEnsembleMappingDict(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Obj *mapDict)
+}
+declare 545 {
+    int Tcl_SetEnsembleUnknownHandler(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Obj *unknownList)
+}
+declare 546 {
+    int Tcl_SetEnsembleFlags(Tcl_Interp *interp, Tcl_Command token, int flags)
+}
+declare 547 {
+    int Tcl_GetEnsembleSubcommandList(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Obj **subcmdListPtr)
+}
+declare 548 {
+    int Tcl_GetEnsembleMappingDict(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Obj **mapDictPtr)
+}
+declare 549 {
+    int Tcl_GetEnsembleUnknownHandler(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Obj **unknownListPtr)
+}
+declare 550 {
+    int Tcl_GetEnsembleFlags(Tcl_Interp *interp, Tcl_Command token,
+	    int *flagsPtr)
+}
+declare 551 {
+    int Tcl_GetEnsembleNamespace(Tcl_Interp *interp, Tcl_Command token,
+	    Tcl_Namespace **namespacePtrPtr)
+}
+
+# TIP#233 (virtualized time) akupries
+declare 552 {
+    void Tcl_SetTimeProc(Tcl_GetTimeProc *getProc,
+	    Tcl_ScaleTimeProc *scaleProc,
+	    ClientData clientData)
+}
+declare 553 {
+    void Tcl_QueryTimeProc(Tcl_GetTimeProc **getProc,
+	    Tcl_ScaleTimeProc **scaleProc,
+	    ClientData *clientData)
+}
 
 # TIP#218 (driver thread actions) davygrvy/akupries ChannelType ver 4
 declare 554 {
     Tcl_DriverThreadActionProc *Tcl_ChannelThreadActionProc(
-	    Tcl_ChannelType *chanTypePtr)
+	    const Tcl_ChannelType *chanTypePtr)
 }
 
-# Slots 555 to 572 are taken already by 8.5
-# TIP #237: Arbitrary-prec Integers (555 ... 559)
-# TIP #208: 'chan' Command          (560 ... 561)
-# TIP #219: Channel Reflection      (562 ... 565)
-# TIP #237: Add. bignum support     (566)
-# TIP #181: 'namespace unknown' Cmd (567 ... 568)
-# TIP #258: Enhanced Encodings API  (569 ... 572)
+# TIP#237 (arbitrary-precision integers) kbk
+declare 555 {
+    Tcl_Obj *Tcl_NewBignumObj(mp_int *value)
+}
+declare 556 {
+    Tcl_Obj *Tcl_DbNewBignumObj(mp_int *value, const char *file, int line)
+}
+declare 557 {
+    void Tcl_SetBignumObj(Tcl_Obj *obj, mp_int *value)
+}
+declare 558 {
+    int Tcl_GetBignumFromObj(Tcl_Interp *interp, Tcl_Obj *obj, mp_int *value)
+}
+declare 559 {
+    int Tcl_TakeBignumFromObj(Tcl_Interp *interp, Tcl_Obj *obj, mp_int *value)
+}
+
+# TIP #208 ('chan' command) jeffh
+declare 560 {
+    int Tcl_TruncateChannel(Tcl_Channel chan, Tcl_WideInt length)
+}
+declare 561 {
+    Tcl_DriverTruncateProc *Tcl_ChannelTruncateProc(
+	    const Tcl_ChannelType *chanTypePtr)
+}
+
+# TIP#219 (channel reflection api) akupries
+declare 562 {
+    void Tcl_SetChannelErrorInterp(Tcl_Interp *interp, Tcl_Obj *msg)
+}
+declare 563 {
+    void Tcl_GetChannelErrorInterp(Tcl_Interp *interp, Tcl_Obj **msg)
+}
+declare 564 {
+    void Tcl_SetChannelError(Tcl_Channel chan, Tcl_Obj *msg)
+}
+declare 565 {
+    void Tcl_GetChannelError(Tcl_Channel chan, Tcl_Obj **msg)
+}
+
+# TIP #237 (additional conversion functions for bignum support) kbk/dgp
+declare 566 {
+    int Tcl_InitBignumFromDouble(Tcl_Interp *interp, double initval,
+	    mp_int *toInit)
+}
+
+# TIP#181 (namespace unknown command) dgp for Neil Madden
+declare 567 {
+    Tcl_Obj *Tcl_GetNamespaceUnknownHandler(Tcl_Interp *interp,
+	    Tcl_Namespace *nsPtr)
+}
+declare 568 {
+    int Tcl_SetNamespaceUnknownHandler(Tcl_Interp *interp,
+	    Tcl_Namespace *nsPtr, Tcl_Obj *handlerPtr)
+}
+
+# TIP#258 (enhanced interface for encodings) dgp
+declare 569 {
+    int Tcl_GetEncodingFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+	    Tcl_Encoding *encodingPtr)
+}
+declare 570 {
+    Tcl_Obj *Tcl_GetEncodingSearchPath(void)
+}
+declare 571 {
+    int Tcl_SetEncodingSearchPath(Tcl_Obj *searchPath)
+}
+declare 572 {
+    const char *Tcl_GetEncodingNameFromEnvironment(Tcl_DString *bufPtr)
+}
 
 # TIP#268 (extended version numbers and requirements) akupries
 declare 573 {
@@ -1795,6 +2086,28 @@ declare 573 {
 	    int objc, Tcl_Obj *const objv[], ClientData *clientDataPtr)
 }
 
+# TIP#270 (utility C routines for string formatting) dgp
+declare 574 {
+    void Tcl_AppendObjToErrorInfo(Tcl_Interp *interp, Tcl_Obj *objPtr)
+}
+declare 575 {
+    void Tcl_AppendLimitedToObj(Tcl_Obj *objPtr, const char *bytes, int length,
+	    int limit, const char *ellipsis)
+}
+declare 576 {
+    Tcl_Obj *Tcl_Format(Tcl_Interp *interp, const char *format, int objc,
+	    Tcl_Obj *const objv[])
+}
+declare 577 {
+    int Tcl_AppendFormatToObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+	    const char *format, int objc, Tcl_Obj *const objv[])
+}
+declare 578 {
+    Tcl_Obj *Tcl_ObjPrintf(const char *format, ...)
+}
+declare 579 {
+    void Tcl_AppendPrintfToObj(Tcl_Obj *objPtr, const char *format, ...)
+}
 declare 630 {
     void TclUnusedStubEntry(void)
 }
@@ -1836,6 +2149,54 @@ declare 1 macosx {
 	    int hasResourceFile, int maxPathLen, char *libraryPath)
 }
 
+##############################################################################
+
+# Public functions that are not accessible via the stubs table.
+
+export {
+    void Tcl_Main(int argc, char **argv, Tcl_AppInitProc *appInitProc)
+}
+export {
+    const char *Tcl_InitStubs(Tcl_Interp *interp, const char *version,
+	int exact)
+}
+export {
+    const char *TclTomMathInitializeStubs(Tcl_Interp* interp,
+	const char* version, int epoch, int revision)
+}
+export {
+    const char *Tcl_PkgInitStubsCheck(Tcl_Interp *interp, const char *version,
+	int exact)
+}
+export {
+    void Tcl_GetMemoryInfo(Tcl_DString *dsPtr)
+}
+export {
+    const char *Tcl_InitStubs(Tcl_Interp *interp, const char *version,
+	int exact)
+}
+export {
+    const char *TclTomMathInitializeStubs(Tcl_Interp *interp,
+	const char *version, int epoch, int revision)
+}
+
+# Global variables that need to be exported from the tcl shared library.
+
+export {
+    TclStubs *tclStubsPtr                       (fool checkstubs)
+}
+export {
+    TclPlatStubs *tclPlatStubsPtr               (fool checkstubs)
+}
+export {
+    TclIntStubs *tclIntStubsPtr                 (fool checkstubs)
+}
+export {
+    TclIntPlatStubs *tclIntPlatStubsPtr         (fool checkstubs)
+}
+export {
+    TclTomMathStubs *tclTomMathStubsPtr         (fool checkstubs)
+}
 # Local Variables:
 # mode: tcl
 # End:
diff --git a/generic/tcl.h b/generic/tcl.h
index 5f47734..5fde9dc 100644
--- a/generic/tcl.h
+++ b/generic/tcl.h
@@ -1,8 +1,8 @@
 /*
  * tcl.h --
  *
- *	This header file describes the externally-visible facilities
- *	of the Tcl interpreter.
+ *	This header file describes the externally-visible facilities of the
+ *	Tcl interpreter.
  *
  * Copyright (c) 1987-1994 The Regents of the University of California.
  * Copyright (c) 1993-1996 Lucent Technologies.
@@ -10,8 +10,8 @@
  * Copyright (c) 1998-2000 by Scriptics Corporation.
  * Copyright (c) 2002 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #ifndef _TCL
@@ -34,37 +34,38 @@ extern "C" {
 #define TCL_FINAL_RELEASE	2
 
 /*
- * When version numbers change here, must also go into the following files
- * and update the version numbers:
+ * When version numbers change here, must also go into the following files and
+ * update the version numbers:
  *
- * library/init.tcl	(only if Major.minor changes, not patchlevel) 1 LOC
+ * library/init.tcl	(1 LOC patch)
  * unix/configure.in	(2 LOC Major, 2 LOC minor, 1 LOC patch)
  * win/configure.in	(as above)
  * win/tcl.m4		(not patchlevel)
- * win/makefile.vc	(not patchlevel) 2 LOC
- * README		(sections 0 and 2)
- * mac/README		(2 LOC, not patchlevel)
+ * win/makefile.bc	(not patchlevel) 2 LOC
+ * README		(sections 0 and 2, with and without separator)
  * macosx/Tcl.pbproj/project.pbxproj (not patchlevel) 1 LOC
  * macosx/Tcl.pbproj/default.pbxuser (not patchlevel) 1 LOC
- * win/README.binary	(sections 0-4)
+ * macosx/Tcl.xcode/project.pbxproj (not patchlevel) 2 LOC
+ * macosx/Tcl.xcode/default.pbxuser (not patchlevel) 1 LOC
+ * macosx/Tcl-Common.xcconfig (not patchlevel) 1 LOC
  * win/README		(not patchlevel) (sections 0 and 2)
- * unix/tcl.spec	(2 LOC Major/Minor, 1 LOC patch)
- * tests/basic.test	(1 LOC M/M, not patchlevel)
+ * unix/tcl.spec	(1 LOC patch)
  * tools/tcl.hpj.in	(not patchlevel, for windows installer)
  * tools/tcl.wse.in	(for windows installer)
  * tools/tclSplash.bmp	(not patchlevel)
  */
+
 #define TCL_MAJOR_VERSION   8
-#define TCL_MINOR_VERSION   4
+#define TCL_MINOR_VERSION   5
 #define TCL_RELEASE_LEVEL   TCL_FINAL_RELEASE
-#define TCL_RELEASE_SERIAL  19
+#define TCL_RELEASE_SERIAL  13
 
-#define TCL_VERSION	    "8.4"
-#define TCL_PATCH_LEVEL	    "8.4.19"
+#define TCL_VERSION	    "8.5"
+#define TCL_PATCH_LEVEL	    "8.5.13"
 
 /*
- * The following definitions set up the proper options for Windows
- * compilers.  We use this method because there is no autoconf equivalent.
+ * The following definitions set up the proper options for Windows compilers.
+ * We use this method because there is no autoconf equivalent.
  */
 
 #ifndef __WIN32__
@@ -93,6 +94,7 @@ extern "C" {
  * Utility macros: STRINGIFY takes an argument and wraps it in "" (double
  * quotation marks), JOIN joins two arguments.
  */
+
 #ifndef STRINGIFY
 #  define STRINGIFY(x) STRINGIFY1(x)
 #  define STRINGIFY1(x) #x
@@ -102,20 +104,20 @@ extern "C" {
 #  define JOIN1(a,b) a##b
 #endif
 
-/* 
- * A special definition used to allow this header file to be included
- * from windows resource files so that they can obtain version
- * information.  RC_INVOKED is defined by default by the windows RC tool.
+/*
+ * A special definition used to allow this header file to be included from
+ * windows resource files so that they can obtain version information.
+ * RC_INVOKED is defined by default by the windows RC tool.
  *
- * Resource compilers don't like all the C stuff, like typedefs and
- * procedure declarations, that occur below, so block them out.
+ * Resource compilers don't like all the C stuff, like typedefs and function
+ * declarations, that occur below, so block them out.
  */
 
 #ifndef RC_INVOKED
 
 /*
- * Special macro to define mutexes, that doesn't do anything
- * if we are not using threads.
+ * Special macro to define mutexes, that doesn't do anything if we are not
+ * using threads.
  */
 
 #ifdef TCL_THREADS
@@ -125,62 +127,61 @@ extern "C" {
 #endif
 
 /*
- * Macros that eliminate the overhead of the thread synchronization
- * functions when compiling without thread support.
+ * Tcl's public routine Tcl_FSSeek() uses the values SEEK_SET, SEEK_CUR, and
+ * SEEK_END, all #define'd by stdio.h .
+ *
+ * Also, many extensions need stdio.h, and they've grown accustomed to tcl.h
+ * providing it for them rather than #include-ing it themselves as they
+ * should, so also for their sake, we keep the #include to be consistent with
+ * prior Tcl releases.
  */
 
-#ifndef TCL_THREADS
-#define Tcl_MutexLock(mutexPtr)
-#define Tcl_MutexUnlock(mutexPtr)
-#define Tcl_MutexFinalize(mutexPtr)
-#define Tcl_ConditionNotify(condPtr)
-#define Tcl_ConditionWait(condPtr, mutexPtr, timePtr)
-#define Tcl_ConditionFinalize(condPtr)
-#endif /* TCL_THREADS */
-
-
-#ifndef BUFSIZ
-#   include <stdio.h>
-#endif
-
+#include <stdio.h>
 
 /*
- * Definitions that allow Tcl functions with variable numbers of
- * arguments to be used with either varargs.h or stdarg.h.  TCL_VARARGS
- * is used in procedure prototypes.  TCL_VARARGS_DEF is used to declare
- * the arguments in a function definiton: it takes the type and name of
- * the first argument and supplies the appropriate argument declaration
- * string for use in the function definition.  TCL_VARARGS_START
- * initializes the va_list data structure and returns the first argument.
+ * Support for functions with a variable number of arguments.
+ *
+ * The following TCL_VARARGS* macros are to support old extensions
+ * written for older versions of Tcl where the macros permitted
+ * support for the varargs.h system as well as stdarg.h .
+ *
+ * New code should just directly be written to use stdarg.h conventions.
  */
-#if !defined(NO_STDARG)
-#   include <stdarg.h>
-#   define TCL_VARARGS(type, name) (type name, ...)
-#   define TCL_VARARGS_DEF(type, name) (type name, ...)
-#   define TCL_VARARGS_START(type, name, list) (va_start(list, name), name)
-#else
-#   include <varargs.h>
-#      define TCL_VARARGS(type, name) ()
-#      define TCL_VARARGS_DEF(type, name) (va_alist)
-#   define TCL_VARARGS_START(type, name, list) \
-	(va_start(list), va_arg(list, type))
+
+#include <stdarg.h>
+#ifndef TCL_NO_DEPRECATED
+#    define TCL_VARARGS(type, name) (type name, ...)
+#    define TCL_VARARGS_DEF(type, name) (type name, ...)
+#    define TCL_VARARGS_START(type, name, list) (va_start(list, name), name)
 #endif
 
 /*
- * Macros used to declare a function to be exported by a DLL.
- * Used by Windows, maps to no-op declarations on non-Windows systems.
- * The default build on windows is for a DLL, which causes the DLLIMPORT
- * and DLLEXPORT macros to be nonempty. To build a static library, the
- * macro STATIC_BUILD should be defined.
+ * Macros used to declare a function to be exported by a DLL. Used by Windows,
+ * maps to no-op declarations on non-Windows systems. The default build on
+ * windows is for a DLL, which causes the DLLIMPORT and DLLEXPORT macros to be
+ * nonempty. To build a static library, the macro STATIC_BUILD should be
+ * defined.
+ *
+ * Note: when building static but linking dynamically to MSVCRT we must still
+ *       correctly decorate the C library imported function.  Use CRTIMPORT
+ *       for this purpose.  _DLL is defined by the compiler when linking to
+ *       MSVCRT.
  */
 
 #if (defined(__WIN32__) && (defined(_MSC_VER) || (__BORLANDC__ >= 0x0550) || defined(__LCC__) || defined(__WATCOMC__) || (defined(__GNUC__) && defined(__declspec))))
+#   define HAVE_DECLSPEC 1
 #   ifdef STATIC_BUILD
 #       define DLLIMPORT
 #       define DLLEXPORT
+#       ifdef _DLL
+#           define CRTIMPORT __declspec(dllimport)
+#       else
+#           define CRTIMPORT
+#       endif
 #   else
 #       define DLLIMPORT __declspec(dllimport)
 #       define DLLEXPORT __declspec(dllexport)
+#       define CRTIMPORT __declspec(dllimport)
 #   endif
 #else
 #   define DLLIMPORT
@@ -189,23 +190,25 @@ extern "C" {
 #   else
 #       define DLLEXPORT
 #   endif
+#   define CRTIMPORT
 #endif
 
 /*
  * These macros are used to control whether functions are being declared for
- * import or export.  If a function is being declared while it is being built
+ * import or export. If a function is being declared while it is being built
  * to be included in a shared library, then it should have the DLLEXPORT
- * storage class.  If is being declared for use by a module that is going to
+ * storage class. If is being declared for use by a module that is going to
  * link against the shared library, then it should have the DLLIMPORT storage
- * class.  If the symbol is beind declared for a static build or for use from a
+ * class. If the symbol is beind declared for a static build or for use from a
  * stub library, then the storage class should be empty.
  *
- * The convention is that a macro called BUILD_xxxx, where xxxx is the
- * name of a library we are building, is set on the compile line for sources
- * that are to be placed in the library.  When this macro is set, the
- * storage class will be set to DLLEXPORT.  At the end of the header file, the
- * storage class will be reset to DLLIMPORT.
+ * The convention is that a macro called BUILD_xxxx, where xxxx is the name of
+ * a library we are building, is set on the compile line for sources that are
+ * to be placed in the library. When this macro is set, the storage class will
+ * be set to DLLEXPORT. At the end of the header file, the storage class will
+ * be reset to DLLIMPORT.
  */
+
 #undef TCL_STORAGE_CLASS
 #ifdef BUILD_tcl
 #   define TCL_STORAGE_CLASS DLLEXPORT
@@ -218,8 +221,8 @@ extern "C" {
 #endif
 
 /*
- * Definitions that allow this header file to be used either with or
- * without ANSI C features like function prototypes.
+ * Definitions that allow this header file to be used either with or without
+ * ANSI C features like function prototypes.
  */
 
 #undef _ANSI_ARGS_
@@ -257,7 +260,7 @@ extern "C" {
 #endif
 
 /*
- * Make sure EXTERN isn't defined elsewhere
+ * Make sure EXTERN isn't defined elsewhere.
  */
 
 #ifdef EXTERN
@@ -271,12 +274,9 @@ extern "C" {
 #endif
 
 /*
- * The following code is copied from winnt.h.
- * If we don't replicate it here, then <windows.h> can't be included
- * after tcl.h, since tcl.h also defines VOID.
- * This block is skipped under Cygwin and Mingw.
- * 
- * 
+ * The following code is copied from winnt.h. If we don't replicate it here,
+ * then <windows.h> can't be included after tcl.h, since tcl.h also defines
+ * VOID. This block is skipped under Cygwin and Mingw.
  */
 
 #if defined(__WIN32__) && !defined(HAVE_WINNT_IGNORE_VOID)
@@ -289,15 +289,14 @@ typedef long LONG;
 #endif /* __WIN32__ && !HAVE_WINNT_IGNORE_VOID */
 
 /*
- * Macro to use instead of "void" for arguments that must have
- * type "void *" in ANSI C;  maps them to type "char *" in
- * non-ANSI systems.
+ * Macro to use instead of "void" for arguments that must have type "void *"
+ * in ANSI C; maps them to type "char *" in non-ANSI systems.
  */
 
 #ifndef NO_VOID
-#         define VOID void
+#define VOID	void
 #else
-#         define VOID char
+#define VOID	char
 #endif
 
 /*
@@ -322,22 +321,23 @@ typedef long LONG;
 #   ifdef __LP64__
 #	undef TCL_WIDE_INT_TYPE
 #	define TCL_WIDE_INT_IS_LONG 1
+#	define TCL_CFG_DO64BIT 1
 #    else /* !__LP64__ */
 #	define TCL_WIDE_INT_TYPE long long
 #	undef TCL_WIDE_INT_IS_LONG
+#	undef TCL_CFG_DO64BIT
 #    endif /* __LP64__ */
 #    undef HAVE_STRUCT_STAT64
-#    include <mach/mach.h>
 #endif /* __APPLE__ */
 
 /*
- * Define Tcl_WideInt to be a type that is (at least) 64-bits wide,
- * and define Tcl_WideUInt to be the unsigned variant of that type
- * (assuming that where we have one, we can have the other.)
+ * Define Tcl_WideInt to be a type that is (at least) 64-bits wide, and define
+ * Tcl_WideUInt to be the unsigned variant of that type (assuming that where
+ * we have one, we can have the other.)
  *
  * Also defines the following macros:
- * TCL_WIDE_INT_IS_LONG - if wide ints are really longs (i.e. we're on
- *	a real 64-bit system.)
+ * TCL_WIDE_INT_IS_LONG - if wide ints are really longs (i.e. we're on a real
+ *	64-bit system.)
  * Tcl_WideAsLong - forgetful converter from wideInt to long.
  * Tcl_LongAsWide - sign-extending converter from long to wideInt.
  * Tcl_WideAsDouble - converter from wideInt to double.
@@ -346,12 +346,9 @@ typedef long LONG;
  * The following invariant should hold for any long value 'longVal':
  *	longVal == Tcl_WideAsLong(Tcl_LongAsWide(longVal))
  *
- * Note on converting between Tcl_WideInt and strings.  This
- * implementation (in tclObj.c) depends on the functions strtoull()
- * and sprintf(...,"%" TCL_LL_MODIFIER "d",...).  TCL_LL_MODIFIER_SIZE
- * is the length of the modifier string, which is "ll" on most 32-bit
- * Unix systems.  It has to be split up like this to allow for the more
- * complex formats sometimes needed (e.g. in the format(n) command.)
+ * Note on converting between Tcl_WideInt and strings. This implementation (in
+ * tclObj.c) depends on the function
+ * sprintf(...,"%" TCL_LL_MODIFIER "d",...).
  */
 
 #if !defined(TCL_WIDE_INT_TYPE)&&!defined(TCL_WIDE_INT_IS_LONG)
@@ -359,19 +356,16 @@ typedef long LONG;
 #      define TCL_WIDE_INT_TYPE __int64
 #      ifdef __BORLANDC__
 #         define TCL_LL_MODIFIER	"L"
-#         define TCL_LL_MODIFIER_SIZE	1
 #      else /* __BORLANDC__ */
 #         define TCL_LL_MODIFIER	"I64"
-#         define TCL_LL_MODIFIER_SIZE	3
 #      endif /* __BORLANDC__ */
 #   elif defined(__GNUC__)
 #      define TCL_WIDE_INT_TYPE long long
 #      define TCL_LL_MODIFIER	"ll"
-#      define TCL_LL_MODIFIER_SIZE	2
 #   else /* ! __WIN32__ && ! __GNUC__ */
 /*
- * Don't know what platform it is and configure hasn't discovered what
- * is going on for us.  Try to guess...
+ * Don't know what platform it is and configure hasn't discovered what is
+ * going on for us. Try to guess...
  */
 #      ifdef NO_LIMITS_H
 #	  error please define either TCL_WIDE_INT_TYPE or TCL_WIDE_INT_IS_LONG
@@ -400,16 +394,14 @@ typedef unsigned TCL_WIDE_INT_TYPE	Tcl_WideUInt;
 #   define Tcl_DoubleAsWide(val)	((long)((double)(val)))
 #   ifndef TCL_LL_MODIFIER
 #      define TCL_LL_MODIFIER		"l"
-#      define TCL_LL_MODIFIER_SIZE	1
 #   endif /* !TCL_LL_MODIFIER */
 #else /* TCL_WIDE_INT_IS_LONG */
 /*
- * The next short section of defines are only done when not running on
- * Windows or some other strange platform.
+ * The next short section of defines are only done when not running on Windows
+ * or some other strange platform.
  */
 #   ifndef TCL_LL_MODIFIER
 #      define TCL_LL_MODIFIER		"ll"
-#      define TCL_LL_MODIFIER_SIZE	2
 #   endif /* !TCL_LL_MODIFIER */
 #   define Tcl_WideAsLong(val)		((long)((Tcl_WideInt)(val)))
 #   define Tcl_LongAsWide(val)		((Tcl_WideInt)((long)(val)))
@@ -444,38 +436,27 @@ typedef unsigned TCL_WIDE_INT_TYPE	Tcl_WideUInt;
 	struct {long tv_sec;} st_ctim;
 	/* Here is a 4-byte gap */
     } Tcl_StatBuf;
-#elif defined(HAVE_STRUCT_STAT64)
+#elif defined(HAVE_STRUCT_STAT64) && !defined(__APPLE__)
     typedef struct stat64 Tcl_StatBuf;
 #else
     typedef struct stat Tcl_StatBuf;
 #endif
 
-
 /*
- * This flag controls whether binary compatability is maintained with
- * extensions built against a previous version of Tcl. This is true
- * by default.
- */
-#ifndef TCL_PRESERVE_BINARY_COMPATABILITY
-#   define TCL_PRESERVE_BINARY_COMPATABILITY 1
-#endif
-
-
-/*
- * Data structures defined opaquely in this module. The definitions below
- * just provide dummy types. A few fields are made visible in Tcl_Interp
- * structures, namely those used for returning a string result from
- * commands. Direct access to the result field is discouraged in Tcl 8.0.
- * The interpreter result is either an object or a string, and the two
- * values are kept consistent unless some C code sets interp->result
- * directly. Programmers should use either the procedure Tcl_GetObjResult()
- * or Tcl_GetStringResult() to read the interpreter's result. See the
- * SetResult man page for details.
- * 
- * Note: any change to the Tcl_Interp definition below must be mirrored
- * in the "real" definition in tclInt.h.
+ * Data structures defined opaquely in this module. The definitions below just
+ * provide dummy types. A few fields are made visible in Tcl_Interp
+ * structures, namely those used for returning a string result from commands.
+ * Direct access to the result field is discouraged in Tcl 8.0. The
+ * interpreter result is either an object or a string, and the two values are
+ * kept consistent unless some C code sets interp->result directly.
+ * Programmers should use either the function Tcl_GetObjResult() or
+ * Tcl_GetStringResult() to read the interpreter's result. See the SetResult
+ * man page for details.
+ *
+ * Note: any change to the Tcl_Interp definition below must be mirrored in the
+ * "real" definition in tclInt.h.
  *
- * Note: Tcl_ObjCmdProc procedures do not directly set result and freeProc.
+ * Note: Tcl_ObjCmdProc functions do not directly set result and freeProc.
  * Instead, they set a Tcl_Obj member in the "real" structure that can be
  * accessed with Tcl_GetObjResult() and Tcl_SetObjResult().
  */
@@ -484,25 +465,29 @@ typedef struct Tcl_Interp {
     char *result;		/* If the last command returned a string
 				 * result, this points to it. */
     void (*freeProc) _ANSI_ARGS_((char *blockPtr));
-				/* Zero means the string result is
-				 * statically allocated. TCL_DYNAMIC means
-				 * it was allocated with ckalloc and should
-				 * be freed with ckfree. Other values give
-				 * the address of procedure to invoke to
-				 * free the result. Tcl_Eval must free it
-				 * before executing next command. */
-    int errorLine;              /* When TCL_ERROR is returned, this gives
-                                 * the line number within the command where
-                                 * the error occurred (1 if first line). */
+				/* Zero means the string result is statically
+				 * allocated. TCL_DYNAMIC means it was
+				 * allocated with ckalloc and should be freed
+				 * with ckfree. Other values give the address
+				 * of function to invoke to free the result.
+				 * Tcl_Eval must free it before executing next
+				 * command. */
+    int errorLine;		/* When TCL_ERROR is returned, this gives the
+				 * line number within the command where the
+				 * error occurred (1 if first line). */
 } Tcl_Interp;
 
 typedef struct Tcl_AsyncHandler_ *Tcl_AsyncHandler;
 typedef struct Tcl_Channel_ *Tcl_Channel;
+typedef struct Tcl_ChannelTypeVersion_ *Tcl_ChannelTypeVersion;
 typedef struct Tcl_Command_ *Tcl_Command;
 typedef struct Tcl_Condition_ *Tcl_Condition;
+typedef struct Tcl_Dict_ *Tcl_Dict;
 typedef struct Tcl_EncodingState_ *Tcl_EncodingState;
 typedef struct Tcl_Encoding_ *Tcl_Encoding;
 typedef struct Tcl_Event Tcl_Event;
+typedef struct Tcl_InterpState_ *Tcl_InterpState;
+typedef struct Tcl_LoadHandle_ *Tcl_LoadHandle;
 typedef struct Tcl_Mutex_ *Tcl_Mutex;
 typedef struct Tcl_Pid_ *Tcl_Pid;
 typedef struct Tcl_RegExp_ *Tcl_RegExp;
@@ -511,15 +496,13 @@ typedef struct Tcl_ThreadId_ *Tcl_ThreadId;
 typedef struct Tcl_TimerToken_ *Tcl_TimerToken;
 typedef struct Tcl_Trace_ *Tcl_Trace;
 typedef struct Tcl_Var_ *Tcl_Var;
-typedef struct Tcl_ChannelTypeVersion_ *Tcl_ChannelTypeVersion;
-typedef struct Tcl_LoadHandle_ *Tcl_LoadHandle;
 
 /*
- * Definition of the interface to procedures implementing threads.
- * A procedure following this definition is given to each call of
- * 'Tcl_CreateThread' and will be called as the main fuction of
- * the new thread created by that call.
+ * Definition of the interface to functions implementing threads. A function
+ * following this definition is given to each call of 'Tcl_CreateThread' and
+ * will be called as the main fuction of the new thread created by that call.
  */
+
 #if defined __WIN32__
 typedef unsigned (__stdcall Tcl_ThreadCreateProc) _ANSI_ARGS_((ClientData clientData));
 #else
@@ -528,10 +511,11 @@ typedef void (Tcl_ThreadCreateProc) _ANSI_ARGS_((ClientData clientData));
 
 /*
  * Threading function return types used for abstracting away platform
- * differences when writing a Tcl_ThreadCreateProc.  See the NewThread
- * function in generic/tclThreadTest.c for it's usage.
+ * differences when writing a Tcl_ThreadCreateProc. See the NewThread function
+ * in generic/tclThreadTest.c for it's usage.
  */
-#ifdef __WIN32__
+
+#if defined __WIN32__
 #   define Tcl_ThreadCreateType		unsigned __stdcall
 #   define TCL_THREAD_CREATE_RETURN	return 0
 #else
@@ -544,68 +528,68 @@ typedef void (Tcl_ThreadCreateProc) _ANSI_ARGS_((ClientData clientData));
  * given to Tcl_CreateThread.
  */
 
-#define TCL_THREAD_STACK_DEFAULT (0)    /* Use default size for stack */
-#define TCL_THREAD_NOFLAGS       (0000) /* Standard flags, default behaviour */
-#define TCL_THREAD_JOINABLE      (0001) /* Mark the thread as joinable */
+#define TCL_THREAD_STACK_DEFAULT (0)    /* Use default size for stack. */
+#define TCL_THREAD_NOFLAGS	 (0000) /* Standard flags, default
+					 * behaviour. */
+#define TCL_THREAD_JOINABLE	 (0001) /* Mark the thread as joinable. */
 
 /*
- * Flag values passed to Tcl_GetRegExpFromObj.
+ * Flag values passed to Tcl_StringCaseMatch.
  */
-#define	TCL_REG_BASIC		000000	/* BREs (convenience) */
-#define	TCL_REG_EXTENDED	000001	/* EREs */
-#define	TCL_REG_ADVF		000002	/* advanced features in EREs */
-#define	TCL_REG_ADVANCED	000003	/* AREs (which are also EREs) */
-#define	TCL_REG_QUOTE		000004	/* no special characters, none */
-#define	TCL_REG_NOCASE		000010	/* ignore case */
-#define	TCL_REG_NOSUB		000020	/* don't care about subexpressions */
-#define	TCL_REG_EXPANDED	000040	/* expanded format, white space &
-					 * comments */
-#define	TCL_REG_NLSTOP		000100  /* \n doesn't match . or [^ ] */
-#define	TCL_REG_NLANCH		000200  /* ^ matches after \n, $ before */
-#define	TCL_REG_NEWLINE		000300  /* newlines are line terminators */
-#define	TCL_REG_CANMATCH	001000  /* report details on partial/limited
-					 * matches */
+
+#define TCL_MATCH_NOCASE	(1<<0)
 
 /*
- * The following flag is experimental and only intended for use by Expect.  It
- * will probably go away in a later release.
+ * Flag values passed to Tcl_GetRegExpFromObj.
  */
 
-#define TCL_REG_BOSONLY		002000	/* prepend \A to pattern so it only
-					 * matches at the beginning of the
-					 * string. */
+#define	TCL_REG_BASIC		000000	/* BREs (convenience). */
+#define	TCL_REG_EXTENDED	000001	/* EREs. */
+#define	TCL_REG_ADVF		000002	/* Advanced features in EREs. */
+#define	TCL_REG_ADVANCED	000003	/* AREs (which are also EREs). */
+#define	TCL_REG_QUOTE		000004	/* No special characters, none. */
+#define	TCL_REG_NOCASE		000010	/* Ignore case. */
+#define	TCL_REG_NOSUB		000020	/* Don't care about subexpressions. */
+#define	TCL_REG_EXPANDED	000040	/* Expanded format, white space &
+					 * comments. */
+#define	TCL_REG_NLSTOP		000100  /* \n doesn't match . or [^ ] */
+#define	TCL_REG_NLANCH		000200  /* ^ matches after \n, $ before. */
+#define	TCL_REG_NEWLINE		000300  /* Newlines are line terminators. */
+#define	TCL_REG_CANMATCH	001000  /* Report details on partial/limited
+					 * matches. */
 
 /*
  * Flags values passed to Tcl_RegExpExecObj.
  */
+
 #define	TCL_REG_NOTBOL	0001	/* Beginning of string does not match ^.  */
 #define	TCL_REG_NOTEOL	0002	/* End of string does not match $. */
 
 /*
- * Structures filled in by Tcl_RegExpInfo.  Note that all offset values are
- * relative to the start of the match string, not the beginning of the
- * entire string.
+ * Structures filled in by Tcl_RegExpInfo. Note that all offset values are
+ * relative to the start of the match string, not the beginning of the entire
+ * string.
  */
 
 typedef struct Tcl_RegExpIndices {
-    long start;		/* character offset of first character in match */
-    long end;		/* character offset of first character after the
-			 * match. */
+    long start;			/* Character offset of first character in
+				 * match. */
+    long end;			/* Character offset of first character after
+				 * the match. */
 } Tcl_RegExpIndices;
 
 typedef struct Tcl_RegExpInfo {
-    int nsubs;			/* number of subexpressions in the
-				 * compiled expression */
-    Tcl_RegExpIndices *matches;	/* array of nsubs match offset
-				 * pairs */
-    long extendStart;		/* The offset at which a subsequent
-				 * match might begin. */
+    int nsubs;			/* Number of subexpressions in the compiled
+				 * expression. */
+    Tcl_RegExpIndices *matches;	/* Array of nsubs match offset pairs. */
+    long extendStart;		/* The offset at which a subsequent match
+				 * might begin. */
     long reserved;		/* Reserved for later use. */
 } Tcl_RegExpInfo;
 
 /*
- * Picky compilers complain if this typdef doesn't appear before the
- * struct's reference in tclDecls.h.
+ * Picky compilers complain if this typdef doesn't appear before the struct's
+ * reference in tclDecls.h.
  */
 
 typedef Tcl_StatBuf *Tcl_Stat_;
@@ -613,32 +597,31 @@ typedef struct stat *Tcl_OldStat_;
 
 /*
  * When a TCL command returns, the interpreter contains a result from the
- * command. Programmers are strongly encouraged to use one of the
- * procedures Tcl_GetObjResult() or Tcl_GetStringResult() to read the
- * interpreter's result. See the SetResult man page for details. Besides
- * this result, the command procedure returns an integer code, which is 
- * one of the following:
+ * command. Programmers are strongly encouraged to use one of the functions
+ * Tcl_GetObjResult() or Tcl_GetStringResult() to read the interpreter's
+ * result. See the SetResult man page for details. Besides this result, the
+ * command function returns an integer code, which is one of the following:
  *
- * TCL_OK		Command completed normally; the interpreter's
- *			result contains	the command's result.
- * TCL_ERROR		The command couldn't be completed successfully;
- *			the interpreter's result describes what went wrong.
- * TCL_RETURN		The command requests that the current procedure
- *			return; the interpreter's result contains the
- *			procedure's return value.
- * TCL_BREAK		The command requests that the innermost loop
- *			be exited; the interpreter's result is meaningless.
- * TCL_CONTINUE		Go on to the next iteration of the current loop;
- *			the interpreter's result is meaningless.
+ * TCL_OK		Command completed normally; the interpreter's result
+ *			contains the command's result.
+ * TCL_ERROR		The command couldn't be completed successfully; the
+ *			interpreter's result describes what went wrong.
+ * TCL_RETURN		The command requests that the current function return;
+ *			the interpreter's result contains the function's
+ *			return value.
+ * TCL_BREAK		The command requests that the innermost loop be
+ *			exited; the interpreter's result is meaningless.
+ * TCL_CONTINUE		Go on to the next iteration of the current loop; the
+ *			interpreter's result is meaningless.
  */
 
-#define TCL_OK		0
-#define TCL_ERROR	1
-#define TCL_RETURN	2
-#define TCL_BREAK	3
-#define TCL_CONTINUE	4
+#define TCL_OK			0
+#define TCL_ERROR		1
+#define TCL_RETURN		2
+#define TCL_BREAK		3
+#define TCL_CONTINUE		4
 
-#define TCL_RESULT_SIZE 200
+#define TCL_RESULT_SIZE		200
 
 /*
  * Flags to control what substitutions are performed by Tcl_SubstObj():
@@ -649,16 +632,17 @@ typedef struct stat *Tcl_OldStat_;
 #define TCL_SUBST_BACKSLASHES	004
 #define TCL_SUBST_ALL		007
 
-
 /*
  * Argument descriptors for math function callbacks in expressions:
  */
+
 typedef enum {
     TCL_INT, TCL_DOUBLE, TCL_EITHER, TCL_WIDE_INT
 } Tcl_ValueType;
+
 typedef struct Tcl_Value {
-    Tcl_ValueType type;		/* Indicates intValue or doubleValue is
-				 * valid, or both. */
+    Tcl_ValueType type;		/* Indicates intValue or doubleValue is valid,
+				 * or both. */
     long intValue;		/* Integer value. */
     double doubleValue;		/* Double-precision floating value. */
     Tcl_WideInt wideValue;	/* Wide (min. 64-bit) integer value. */
@@ -666,13 +650,13 @@ typedef struct Tcl_Value {
 
 /*
  * Forward declaration of Tcl_Obj to prevent an error when the forward
- * reference to Tcl_Obj is encountered in the procedure types declared 
- * below.
+ * reference to Tcl_Obj is encountered in the function types declared below.
  */
+
 struct Tcl_Obj;
 
 /*
- * Procedure types defined by Tcl:
+ * Function types defined by Tcl:
  */
 
 typedef int (Tcl_AppInitProc) _ANSI_ARGS_((Tcl_Interp *interp));
@@ -718,7 +702,9 @@ typedef void (Tcl_NamespaceDeleteProc) _ANSI_ARGS_((ClientData clientData));
 typedef int (Tcl_ObjCmdProc) _ANSI_ARGS_((ClientData clientData,
 	Tcl_Interp *interp, int objc, struct Tcl_Obj * CONST * objv));
 typedef int (Tcl_PackageInitProc) _ANSI_ARGS_((Tcl_Interp *interp));
-typedef void (Tcl_PanicProc) _ANSI_ARGS_(TCL_VARARGS(CONST char *, format));
+typedef int (Tcl_PackageUnloadProc) _ANSI_ARGS_((Tcl_Interp *interp,
+	int flags));
+typedef void (Tcl_PanicProc) _ANSI_ARGS_((CONST char *format, ...));
 typedef void (Tcl_TcpAcceptProc) _ANSI_ARGS_((ClientData callbackData,
 	Tcl_Channel chan, char *address, int port));
 typedef void (Tcl_TimerProc) _ANSI_ARGS_((ClientData clientData));
@@ -739,37 +725,35 @@ typedef void (Tcl_ServiceModeHookProc) _ANSI_ARGS_((int mode));
 typedef ClientData (Tcl_InitNotifierProc) _ANSI_ARGS_((VOID));
 typedef void (Tcl_FinalizeNotifierProc) _ANSI_ARGS_((ClientData clientData));
 typedef void (Tcl_MainLoopProc) _ANSI_ARGS_((void));
-
+
 /*
- * The following structure represents a type of object, which is a
- * particular internal representation for an object plus a set of
- * procedures that provide standard operations on objects of that type.
+ * The following structure represents a type of object, which is a particular
+ * internal representation for an object plus a set of functions that provide
+ * standard operations on objects of that type.
  */
 
 typedef struct Tcl_ObjType {
     char *name;			/* Name of the type, e.g. "int". */
     Tcl_FreeInternalRepProc *freeIntRepProc;
 				/* Called to free any storage for the type's
-				 * internal rep. NULL if the internal rep
-				 * does not need freeing. */
+				 * internal rep. NULL if the internal rep does
+				 * not need freeing. */
     Tcl_DupInternalRepProc *dupIntRepProc;
-    				/* Called to create a new object as a copy
-				 * of an existing object. */
+				/* Called to create a new object as a copy of
+				 * an existing object. */
     Tcl_UpdateStringProc *updateStringProc;
-    				/* Called to update the string rep from the
+				/* Called to update the string rep from the
 				 * type's internal representation. */
     Tcl_SetFromAnyProc *setFromAnyProc;
-    				/* Called to convert the object's internal
-				 * rep to this type. Frees the internal rep
-				 * of the old type. Returns TCL_ERROR on
-				 * failure. */
+				/* Called to convert the object's internal rep
+				 * to this type. Frees the internal rep of the
+				 * old type. Returns TCL_ERROR on failure. */
 } Tcl_ObjType;
 
-
 /*
- * One of the following structures exists for each object in the Tcl
- * system. An object stores a value as either a string, some internal
- * representation, or both.
+ * One of the following structures exists for each object in the Tcl system.
+ * An object stores a value as either a string, some internal representation,
+ * or both.
  */
 
 typedef struct Tcl_Obj {
@@ -779,101 +763,54 @@ typedef struct Tcl_Obj {
 				 * must be followed by a null byte (i.e., at
 				 * offset length) but may also contain
 				 * embedded null characters. The array's
-				 * storage is allocated by ckalloc. NULL
-				 * means the string rep is invalid and must
-				 * be regenerated from the internal rep.
-				 * Clients should use Tcl_GetStringFromObj
-				 * or Tcl_GetString to get a pointer to the
-				 * byte array as a readonly value. */
+				 * storage is allocated by ckalloc. NULL means
+				 * the string rep is invalid and must be
+				 * regenerated from the internal rep.  Clients
+				 * should use Tcl_GetStringFromObj or
+				 * Tcl_GetString to get a pointer to the byte
+				 * array as a readonly value. */
     int length;			/* The number of bytes at *bytes, not
 				 * including the terminating null. */
     Tcl_ObjType *typePtr;	/* Denotes the object's type. Always
 				 * corresponds to the type of the object's
-				 * internal rep. NULL indicates the object
-				 * has no internal rep (has no type). */
+				 * internal rep. NULL indicates the object has
+				 * no internal rep (has no type). */
     union {			/* The internal representation: */
-	long longValue;		/*   - an long integer value */
-	double doubleValue;	/*   - a double-precision floating value */
-	VOID *otherValuePtr;	/*   - another, type-specific value */
-	Tcl_WideInt wideValue;	/*   - a long long value */
-	struct {		/*   - internal rep as two pointers */
+	long longValue;		/*   - an long integer value. */
+	double doubleValue;	/*   - a double-precision floating value. */
+	VOID *otherValuePtr;	/*   - another, type-specific value. */
+	Tcl_WideInt wideValue;	/*   - a long long value. */
+	struct {		/*   - internal rep as two pointers. */
 	    VOID *ptr1;
 	    VOID *ptr2;
 	} twoPtrValue;
+	struct {		/*   - internal rep as a wide int, tightly
+				 *     packed fields. */
+	    VOID *ptr;		/* Pointer to digits. */
+	    unsigned long value;/* Alloc, used, and signum packed into a
+				 * single word. */
+	} ptrAndLongRep;
     } internalRep;
 } Tcl_Obj;
 
-
 /*
- * Macros to increment and decrement a Tcl_Obj's reference count, and to
- * test whether an object is shared (i.e. has reference count > 1).
- * Note: clients should use Tcl_DecrRefCount() when they are finished using
- * an object, and should never call TclFreeObj() directly. TclFreeObj() is
- * only defined and made public in tcl.h to support Tcl_DecrRefCount's macro
- * definition.
+ * Macros to increment and decrement a Tcl_Obj's reference count, and to test
+ * whether an object is shared (i.e. has reference count > 1). Note: clients
+ * should use Tcl_DecrRefCount() when they are finished using an object, and
+ * should never call TclFreeObj() directly. TclFreeObj() is only defined and
+ * made public in tcl.h to support Tcl_DecrRefCount's macro definition.
  */
+
 void		Tcl_IncrRefCount _ANSI_ARGS_((Tcl_Obj *objPtr));
 void		Tcl_DecrRefCount _ANSI_ARGS_((Tcl_Obj *objPtr));
 int		Tcl_IsShared _ANSI_ARGS_((Tcl_Obj *objPtr));
-
-#ifdef TCL_MEM_DEBUG
-#   define Tcl_IncrRefCount(objPtr) \
-	Tcl_DbIncrRefCount(objPtr, __FILE__, __LINE__)
-#   define Tcl_DecrRefCount(objPtr) \
-	Tcl_DbDecrRefCount(objPtr, __FILE__, __LINE__)
-#   define Tcl_IsShared(objPtr) \
-	Tcl_DbIsShared(objPtr, __FILE__, __LINE__)
-#else
-#   define Tcl_IncrRefCount(objPtr) \
-	++(objPtr)->refCount
-    /*
-     * Use do/while0 idiom for optimum correctness without compiler warnings
-     * http://c2.com/cgi/wiki?TrivialDoWhileLoop
-     */
-#   define Tcl_DecrRefCount(objPtr) \
-	do { \
-	    Tcl_Obj *_objPtr = (objPtr); \
-	    if (--(_objPtr)->refCount <= 0) { \
-		TclFreeObj(_objPtr); \
-	    } \
-	} while(0)
-#   define Tcl_IsShared(objPtr) \
-	((objPtr)->refCount > 1)
-#endif
 
 /*
- * Macros and definitions that help to debug the use of Tcl objects.
- * When TCL_MEM_DEBUG is defined, the Tcl_New declarations are 
- * overridden to call debugging versions of the object creation procedures.
+ * The following structure contains the state needed by Tcl_SaveResult. No-one
+ * outside of Tcl should access any of these fields. This structure is
+ * typically allocated on the stack.
  */
 
-#ifdef TCL_MEM_DEBUG
-#  define Tcl_NewBooleanObj(val) \
-     Tcl_DbNewBooleanObj(val, __FILE__, __LINE__)
-#  define Tcl_NewByteArrayObj(bytes, len) \
-     Tcl_DbNewByteArrayObj(bytes, len, __FILE__, __LINE__)
-#  define Tcl_NewDoubleObj(val) \
-     Tcl_DbNewDoubleObj(val, __FILE__, __LINE__)
-#  define Tcl_NewIntObj(val) \
-     Tcl_DbNewLongObj(val, __FILE__, __LINE__)
-#  define Tcl_NewListObj(objc, objv) \
-     Tcl_DbNewListObj(objc, objv, __FILE__, __LINE__)
-#  define Tcl_NewLongObj(val) \
-     Tcl_DbNewLongObj(val, __FILE__, __LINE__)
-#  define Tcl_NewObj() \
-     Tcl_DbNewObj(__FILE__, __LINE__)
-#  define Tcl_NewStringObj(bytes, len) \
-     Tcl_DbNewStringObj(bytes, len, __FILE__, __LINE__)
-#  define Tcl_NewWideIntObj(val) \
-     Tcl_DbNewWideIntObj(val, __FILE__, __LINE__)
-#endif /* TCL_MEM_DEBUG */
-
-
-/*
- * The following structure contains the state needed by
- * Tcl_SaveResult.  No-one outside of Tcl should access any of these
- * fields.  This structure is typically allocated on the stack.
- */
 typedef struct Tcl_SavedResult {
     char *result;
     Tcl_FreeProc *freeProc;
@@ -885,46 +822,46 @@ typedef struct Tcl_SavedResult {
 } Tcl_SavedResult;
 
 /*
- * The following definitions support Tcl's namespace facility.
- * Note: the first five fields must match exactly the fields in a
- * Namespace structure (see tclInt.h). 
+ * The following definitions support Tcl's namespace facility. Note: the first
+ * five fields must match exactly the fields in a Namespace structure (see
+ * tclInt.h).
  */
 
 typedef struct Tcl_Namespace {
-    char *name;                 /* The namespace's name within its parent
-				 * namespace. This contains no ::'s. The
-				 * name of the global namespace is ""
-				 * although "::" is an synonym. */
-    char *fullName;             /* The namespace's fully qualified name.
-				 * This starts with ::. */
-    ClientData clientData;      /* Arbitrary value associated with this
+    char *name;			/* The namespace's name within its parent
+				 * namespace. This contains no ::'s. The name
+				 * of the global namespace is "" although "::"
+				 * is an synonym. */
+    char *fullName;		/* The namespace's fully qualified name. This
+				 * starts with ::. */
+    ClientData clientData;	/* Arbitrary value associated with this
 				 * namespace. */
-    Tcl_NamespaceDeleteProc* deleteProc;
-                                /* Procedure invoked when deleting the
+    Tcl_NamespaceDeleteProc *deleteProc;
+				/* Function invoked when deleting the
 				 * namespace to, e.g., free clientData. */
-    struct Tcl_Namespace* parentPtr;
-                                /* Points to the namespace that contains
-				 * this one. NULL if this is the global
+    struct Tcl_Namespace *parentPtr;
+				/* Points to the namespace that contains this
+				 * one. NULL if this is the global
 				 * namespace. */
 } Tcl_Namespace;
 
 /*
- * The following structure represents a call frame, or activation record.
- * A call frame defines a naming context for a procedure call: its local
- * scope (for local variables) and its namespace scope (used for non-local
- * variables; often the global :: namespace). A call frame can also define
- * the naming context for a namespace eval or namespace inscope command:
- * the namespace in which the command's code should execute. The
- * Tcl_CallFrame structures exist only while procedures or namespace
- * eval/inscope's are being executed, and provide a Tcl call stack.
- * 
- * A call frame is initialized and pushed using Tcl_PushCallFrame and
- * popped using Tcl_PopCallFrame. Storage for a Tcl_CallFrame must be
- * provided by the Tcl_PushCallFrame caller, and callers typically allocate
- * them on the C call stack for efficiency. For this reason, Tcl_CallFrame
- * is defined as a structure and not as an opaque token. However, most
- * Tcl_CallFrame fields are hidden since applications should not access
- * them directly; others are declared as "dummyX".
+ * The following structure represents a call frame, or activation record. A
+ * call frame defines a naming context for a procedure call: its local scope
+ * (for local variables) and its namespace scope (used for non-local
+ * variables; often the global :: namespace). A call frame can also define the
+ * naming context for a namespace eval or namespace inscope command: the
+ * namespace in which the command's code should execute. The Tcl_CallFrame
+ * structures exist only while procedures or namespace eval/inscope's are
+ * being executed, and provide a Tcl call stack.
+ *
+ * A call frame is initialized and pushed using Tcl_PushCallFrame and popped
+ * using Tcl_PopCallFrame. Storage for a Tcl_CallFrame must be provided by the
+ * Tcl_PushCallFrame caller, and callers typically allocate them on the C call
+ * stack for efficiency. For this reason, Tcl_CallFrame is defined as a
+ * structure and not as an opaque token. However, most Tcl_CallFrame fields
+ * are hidden since applications should not access them directly; others are
+ * declared as "dummyX".
  *
  * WARNING!! The structure definition must be kept consistent with the
  * CallFrame structure in tclInt.h. If you change one, change the other.
@@ -949,57 +886,56 @@ typedef struct Tcl_CallFrame {
 
 /*
  * Information about commands that is returned by Tcl_GetCommandInfo and
- * passed to Tcl_SetCommandInfo. objProc is an objc/objv object-based
- * command procedure while proc is a traditional Tcl argc/argv
- * string-based procedure. Tcl_CreateObjCommand and Tcl_CreateCommand
- * ensure that both objProc and proc are non-NULL and can be called to
- * execute the command. However, it may be faster to call one instead of
- * the other. The member isNativeObjectProc is set to 1 if an
- * object-based procedure was registered by Tcl_CreateObjCommand, and to
- * 0 if a string-based procedure was registered by Tcl_CreateCommand.
- * The other procedure is typically set to a compatibility wrapper that
- * does string-to-object or object-to-string argument conversions then
- * calls the other procedure.
+ * passed to Tcl_SetCommandInfo. objProc is an objc/objv object-based command
+ * function while proc is a traditional Tcl argc/argv string-based function.
+ * Tcl_CreateObjCommand and Tcl_CreateCommand ensure that both objProc and
+ * proc are non-NULL and can be called to execute the command. However, it may
+ * be faster to call one instead of the other. The member isNativeObjectProc
+ * is set to 1 if an object-based function was registered by
+ * Tcl_CreateObjCommand, and to 0 if a string-based function was registered by
+ * Tcl_CreateCommand. The other function is typically set to a compatibility
+ * wrapper that does string-to-object or object-to-string argument conversions
+ * then calls the other function.
  */
 
 typedef struct Tcl_CmdInfo {
-    int isNativeObjectProc;	 /* 1 if objProc was registered by a call to
-				  * Tcl_CreateObjCommand; 0 otherwise.
-				  * Tcl_SetCmdInfo does not modify this
-				  * field. */
-    Tcl_ObjCmdProc *objProc;	 /* Command's object-based procedure. */
-    ClientData objClientData;	 /* ClientData for object proc. */
-    Tcl_CmdProc *proc;		 /* Command's string-based procedure. */
-    ClientData clientData;	 /* ClientData for string proc. */
+    int isNativeObjectProc;	/* 1 if objProc was registered by a call to
+				 * Tcl_CreateObjCommand; 0 otherwise.
+				 * Tcl_SetCmdInfo does not modify this
+				 * field. */
+    Tcl_ObjCmdProc *objProc;	/* Command's object-based function. */
+    ClientData objClientData;	/* ClientData for object proc. */
+    Tcl_CmdProc *proc;		/* Command's string-based function. */
+    ClientData clientData;	/* ClientData for string proc. */
     Tcl_CmdDeleteProc *deleteProc;
-                                 /* Procedure to call when command is
-                                  * deleted. */
-    ClientData deleteData;	 /* Value to pass to deleteProc (usually
-				  * the same as clientData). */
-    Tcl_Namespace *namespacePtr; /* Points to the namespace that contains
-				  * this command. Note that Tcl_SetCmdInfo
-				  * will not change a command's namespace;
-				  * use Tcl_RenameCommand to do that. */
-
+				/* Function to call when command is
+				 * deleted. */
+    ClientData deleteData;	/* Value to pass to deleteProc (usually the
+				 * same as clientData). */
+    Tcl_Namespace *namespacePtr;/* Points to the namespace that contains this
+				 * command. Note that Tcl_SetCmdInfo will not
+				 * change a command's namespace; use
+				 * TclRenameCommand or Tcl_Eval (of 'rename')
+				 * to do that. */
 } Tcl_CmdInfo;
 
 /*
- * The structure defined below is used to hold dynamic strings.  The only
- * field that clients should use is the string field, accessible via the
- * macro Tcl_DStringValue.  
+ * The structure defined below is used to hold dynamic strings. The only
+ * fields that clients should use are string and length, accessible via the
+ * macros Tcl_DStringValue and Tcl_DStringLength.
  */
 
 #define TCL_DSTRING_STATIC_SIZE 200
 typedef struct Tcl_DString {
-    char *string;		/* Points to beginning of string:  either
+    char *string;		/* Points to beginning of string: either
 				 * staticSpace below or a malloced array. */
     int length;			/* Number of non-NULL characters in the
 				 * string. */
     int spaceAvl;		/* Total number of bytes available for the
 				 * string and its terminating NULL char. */
     char staticSpace[TCL_DSTRING_STATIC_SIZE];
-				/* Space to use in common case where string
-				 * is small. */
+				/* Space to use in common case where string is
+				 * small. */
 } Tcl_DString;
 
 #define Tcl_DStringLength(dsPtr) ((dsPtr)->length)
@@ -1007,29 +943,34 @@ typedef struct Tcl_DString {
 #define Tcl_DStringTrunc Tcl_DStringSetLength
 
 /*
- * Definitions for the maximum number of digits of precision that may
- * be specified in the "tcl_precision" variable, and the number of
- * bytes of buffer space required by Tcl_PrintDouble.
+ * Definitions for the maximum number of digits of precision that may be
+ * specified in the "tcl_precision" variable, and the number of bytes of
+ * buffer space required by Tcl_PrintDouble.
  */
 
-#define TCL_MAX_PREC 17
-#define TCL_DOUBLE_SPACE (TCL_MAX_PREC+10)
+#define TCL_MAX_PREC		17
+#define TCL_DOUBLE_SPACE	(TCL_MAX_PREC+10)
 
 /*
  * Definition for a number of bytes of buffer space sufficient to hold the
- * string representation of an integer in base 10 (assuming the existence
- * of 64-bit integers).
+ * string representation of an integer in base 10 (assuming the existence of
+ * 64-bit integers).
  */
 
 #define TCL_INTEGER_SPACE	24
 
 /*
- * Flag that may be passed to Tcl_ConvertElement to force it not to
- * output braces (careful!  if you change this flag be sure to change
- * the definitions at the front of tclUtil.c).
+ * Flag values passed to Tcl_ConvertElement.
+ * TCL_DONT_USE_BRACES forces it not to enclose the element in braces, but to
+ *	use backslash quoting instead.
+ * TCL_DONT_QUOTE_HASH disables the default quoting of the '#' character. It
+ *	is safe to leave the hash unquoted when the element is not the first
+ *	element of a list, and this flag can be used by the caller to indicate
+ *	that condition.
  */
 
 #define TCL_DONT_USE_BRACES	1
+#define TCL_DONT_QUOTE_HASH	8
 
 /*
  * Flag that may be passed to Tcl_GetIndexFromObj to force it to disallow
@@ -1039,26 +980,36 @@ typedef struct Tcl_DString {
 #define TCL_EXACT	1
 
 /*
- * Flag values passed to Tcl_RecordAndEval and/or Tcl_EvalObj.
- * WARNING: these bit choices must not conflict with the bit choices
- * for evalFlag bits in tclInt.h!!
+ * Flag values passed to Tcl_RecordAndEval, Tcl_EvalObj, Tcl_EvalObjv.
+ * WARNING: these bit choices must not conflict with the bit choices for
+ * evalFlag bits in tclInt.h!
+ *
+ * Meanings:
+ *	TCL_NO_EVAL:		Just record this command
+ *	TCL_EVAL_GLOBAL:	Execute script in global namespace
+ *	TCL_EVAL_DIRECT:	Do not compile this script
+ *	TCL_EVAL_INVOKE:	Magical Tcl_EvalObjv mode for aliases/ensembles
+ *				o Run in iPtr->lookupNsPtr or global namespace
+ *				o Cut out of error traces
+ *				o Don't reset the flags controlling ensemble
+ *				  error message rewriting.
  */
 #define TCL_NO_EVAL		0x10000
 #define TCL_EVAL_GLOBAL		0x20000
 #define TCL_EVAL_DIRECT		0x40000
-#define TCL_EVAL_INVOKE	        0x80000
+#define TCL_EVAL_INVOKE		0x80000
 
 /*
- * Special freeProc values that may be passed to Tcl_SetResult (see
- * the man page for details):
+ * Special freeProc values that may be passed to Tcl_SetResult (see the man
+ * page for details):
  */
 
-#define TCL_VOLATILE	((Tcl_FreeProc *) 1)
-#define TCL_STATIC	((Tcl_FreeProc *) 0)
-#define TCL_DYNAMIC	((Tcl_FreeProc *) 3)
+#define TCL_VOLATILE		((Tcl_FreeProc *) 1)
+#define TCL_STATIC		((Tcl_FreeProc *) 0)
+#define TCL_DYNAMIC		((Tcl_FreeProc *) 3)
 
 /*
- * Flag values passed to variable-related procedures.
+ * Flag values passed to variable-related functions.
  */
 
 #define TCL_GLOBAL_ONLY		 1
@@ -1081,7 +1032,15 @@ typedef struct Tcl_DString {
 #define TCL_TRACE_RESULT_OBJECT  0x10000
 
 /*
- * Flag values passed to command-related procedures.
+ * Flag values for ensemble commands.
+ */
+
+#define TCL_ENSEMBLE_PREFIX 0x02/* Flag value to say whether to allow
+				 * unambiguous prefixes of commands or to
+				 * require exact matches for command names. */
+
+/*
+ * Flag values passed to command-related functions.
  */
 
 #define TCL_TRACE_RENAME 0x2000
@@ -1090,32 +1049,34 @@ typedef struct Tcl_DString {
 #define TCL_ALLOW_INLINE_COMPILATION 0x20000
 
 /*
- * Flag values passed to Tcl_CreateObjTrace, and used internally
- * by command execution traces.  Slots 4,8,16 and 32 are
- * used internally by execution traces (see tclCmdMZ.c)
+ * The TCL_PARSE_PART1 flag is deprecated and has no effect. The part1 is now
+ * always parsed whenever the part2 is NULL. (This is to avoid a common error
+ * when converting code to use the new object based APIs and forgetting to
+ * give the flag)
  */
-#define TCL_TRACE_ENTER_EXEC		1
-#define TCL_TRACE_LEAVE_EXEC		2
 
-/*
- * The TCL_PARSE_PART1 flag is deprecated and has no effect. 
- * The part1 is now always parsed whenever the part2 is NULL.
- * (This is to avoid a common error when converting code to
- *  use the new object based APIs and forgetting to give the
- *  flag)
- */
 #ifndef TCL_NO_DEPRECATED
-#   define TCL_PARSE_PART1      0x400
+#   define TCL_PARSE_PART1	0x400
 #endif
 
 /*
  * Types for linked variables:
  */
+
 #define TCL_LINK_INT		1
 #define TCL_LINK_DOUBLE		2
 #define TCL_LINK_BOOLEAN	3
 #define TCL_LINK_STRING		4
 #define TCL_LINK_WIDE_INT	5
+#define TCL_LINK_CHAR		6
+#define TCL_LINK_UCHAR		7
+#define TCL_LINK_SHORT		8
+#define TCL_LINK_USHORT		9
+#define TCL_LINK_UINT		10
+#define TCL_LINK_LONG		11
+#define TCL_LINK_ULONG		12
+#define TCL_LINK_FLOAT		13
+#define TCL_LINK_WIDE_UINT	14
 #define TCL_LINK_READ_ONLY	0x80
 
 /*
@@ -1136,10 +1097,10 @@ typedef void (Tcl_FreeHashEntryProc) _ANSI_ARGS_((Tcl_HashEntry *hPtr));
 
 /*
  * This flag controls whether the hash table stores the hash of a key, or
- * recalculates it. There should be no reason for turning this flag off
- * as it is completely binary and source compatible unless you directly
- * access the bucketPtr member of the Tcl_HashTableEntry structure. This
- * member has been removed and the space used to store the hash value.
+ * recalculates it. There should be no reason for turning this flag off as it
+ * is completely binary and source compatible unless you directly access the
+ * bucketPtr member of the Tcl_HashTableEntry structure. This member has been
+ * removed and the space used to store the hash value.
  */
 
 #ifndef TCL_HASH_KEY_STORE_HASH
@@ -1147,160 +1108,152 @@ typedef void (Tcl_FreeHashEntryProc) _ANSI_ARGS_((Tcl_HashEntry *hPtr));
 #endif
 
 /*
- * Structure definition for an entry in a hash table.  No-one outside
- * Tcl should access any of these fields directly;  use the macros
- * defined below.
+ * Structure definition for an entry in a hash table. No-one outside Tcl
+ * should access any of these fields directly; use the macros defined below.
  */
 
 struct Tcl_HashEntry {
-    Tcl_HashEntry *nextPtr;		/* Pointer to next entry in this
-					 * hash bucket, or NULL for end of
-					 * chain. */
-    Tcl_HashTable *tablePtr;		/* Pointer to table containing entry. */
+    Tcl_HashEntry *nextPtr;	/* Pointer to next entry in this hash bucket,
+				 * or NULL for end of chain. */
+    Tcl_HashTable *tablePtr;	/* Pointer to table containing entry. */
 #if TCL_HASH_KEY_STORE_HASH
-#   if TCL_PRESERVE_BINARY_COMPATABILITY
-    VOID *hash;				/* Hash value, stored as pointer to
-					 * ensure that the offsets of the
-					 * fields in this structure are not
-					 * changed. */
-#   else
-    unsigned int hash;			/* Hash value. */
-#   endif
+    VOID *hash;			/* Hash value, stored as pointer to ensure
+				 * that the offsets of the fields in this
+				 * structure are not changed. */
 #else
-    Tcl_HashEntry **bucketPtr;		/* Pointer to bucket that points to
-					 * first entry in this entry's chain:
-					 * used for deleting the entry. */
+    Tcl_HashEntry **bucketPtr;	/* Pointer to bucket that points to first
+				 * entry in this entry's chain: used for
+				 * deleting the entry. */
 #endif
-    ClientData clientData;		/* Application stores something here
-					 * with Tcl_SetHashValue. */
-    union {				/* Key has one of these forms: */
-	char *oneWordValue;		/* One-word value for key. */
-        Tcl_Obj *objPtr;		/* Tcl_Obj * key value. */
-	int words[1];			/* Multiple integer words for key.
-					 * The actual size will be as large
-					 * as necessary for this table's
-					 * keys. */
-	char string[4];			/* String for key.  The actual size
-					 * will be as large as needed to hold
-					 * the key. */
-    } key;				/* MUST BE LAST FIELD IN RECORD!! */
+    ClientData clientData;	/* Application stores something here with
+				 * Tcl_SetHashValue. */
+    union {			/* Key has one of these forms: */
+	char *oneWordValue;	/* One-word value for key. */
+	Tcl_Obj *objPtr;	/* Tcl_Obj * key value. */
+	int words[1];		/* Multiple integer words for key. The actual
+				 * size will be as large as necessary for this
+				 * table's keys. */
+	char string[4];		/* String for key. The actual size will be as
+				 * large as needed to hold the key. */
+    } key;			/* MUST BE LAST FIELD IN RECORD!! */
 };
 
 /*
  * Flags used in Tcl_HashKeyType.
  *
- * TCL_HASH_KEY_RANDOMIZE_HASH:
+ * TCL_HASH_KEY_RANDOMIZE_HASH -
  *				There are some things, pointers for example
  *				which don't hash well because they do not use
  *				the lower bits. If this flag is set then the
  *				hash table will attempt to rectify this by
  *				randomising the bits and then using the upper
  *				N bits as the index into the table.
+ * TCL_HASH_KEY_SYSTEM_HASH -	If this flag is set then all memory internally
+ *                              allocated for the hash table that is not for an
+ *                              entry will use the system heap.
  */
+
 #define TCL_HASH_KEY_RANDOMIZE_HASH 0x1
+#define TCL_HASH_KEY_SYSTEM_HASH    0x2
 
 /*
- * Structure definition for the methods associated with a hash table
- * key type.
+ * Structure definition for the methods associated with a hash table key type.
  */
+
 #define TCL_HASH_KEY_TYPE_VERSION 1
 struct Tcl_HashKeyType {
     int version;		/* Version of the table. If this structure is
 				 * extended in future then the version can be
 				 * used to distinguish between different
-				 * structures. 
-				 */
-
+				 * structures. */
     int flags;			/* Flags, see above for details. */
-
-    /* Calculates a hash value for the key. If this is NULL then the pointer
-     * itself is used as a hash value.
-     */
     Tcl_HashKeyProc *hashKeyProc;
-
-    /* Compares two keys and returns zero if they do not match, and non-zero
-     * if they do. If this is NULL then the pointers are compared.
-     */
+				/* Calculates a hash value for the key. If
+				 * this is NULL then the pointer itself is
+				 * used as a hash value. */
     Tcl_CompareHashKeysProc *compareKeysProc;
-
-    /* Called to allocate memory for a new entry, i.e. if the key is a
-     * string then this could allocate a single block which contains enough
-     * space for both the entry and the string. Only the key field of the
-     * allocated Tcl_HashEntry structure needs to be filled in. If something
-     * else needs to be done to the key, i.e. incrementing a reference count
-     * then that should be done by this function. If this is NULL then Tcl_Alloc
-     * is used to allocate enough space for a Tcl_HashEntry and the key pointer
-     * is assigned to key.oneWordValue.
-     */
+				/* Compares two keys and returns zero if they
+				 * do not match, and non-zero if they do. If
+				 * this is NULL then the pointers are
+				 * compared. */
     Tcl_AllocHashEntryProc *allocEntryProc;
-
-    /* Called to free memory associated with an entry. If something else needs
-     * to be done to the key, i.e. decrementing a reference count then that
-     * should be done by this function. If this is NULL then Tcl_Free is used
-     * to free the Tcl_HashEntry.
-     */
+				/* Called to allocate memory for a new entry,
+				 * i.e. if the key is a string then this could
+				 * allocate a single block which contains
+				 * enough space for both the entry and the
+				 * string. Only the key field of the allocated
+				 * Tcl_HashEntry structure needs to be filled
+				 * in. If something else needs to be done to
+				 * the key, i.e. incrementing a reference
+				 * count then that should be done by this
+				 * function. If this is NULL then Tcl_Alloc is
+				 * used to allocate enough space for a
+				 * Tcl_HashEntry and the key pointer is
+				 * assigned to key.oneWordValue. */
     Tcl_FreeHashEntryProc *freeEntryProc;
+				/* Called to free memory associated with an
+				 * entry. If something else needs to be done
+				 * to the key, i.e. decrementing a reference
+				 * count then that should be done by this
+				 * function. If this is NULL then Tcl_Free is
+				 * used to free the Tcl_HashEntry. */
 };
 
 /*
- * Structure definition for a hash table.  Must be in tcl.h so clients
- * can allocate space for these structures, but clients should never
- * access any fields in this structure.
+ * Structure definition for a hash table.  Must be in tcl.h so clients can
+ * allocate space for these structures, but clients should never access any
+ * fields in this structure.
  */
 
 #define TCL_SMALL_HASH_TABLE 4
 struct Tcl_HashTable {
-    Tcl_HashEntry **buckets;		/* Pointer to bucket array.  Each
-					 * element points to first entry in
-					 * bucket's hash chain, or NULL. */
+    Tcl_HashEntry **buckets;	/* Pointer to bucket array. Each element
+				 * points to first entry in bucket's hash
+				 * chain, or NULL. */
     Tcl_HashEntry *staticBuckets[TCL_SMALL_HASH_TABLE];
-					/* Bucket array used for small tables
-					 * (to avoid mallocs and frees). */
-    int numBuckets;			/* Total number of buckets allocated
-					 * at **bucketPtr. */
-    int numEntries;			/* Total number of entries present
-					 * in table. */
-    int rebuildSize;			/* Enlarge table when numEntries gets
-					 * to be this large. */
-    int downShift;			/* Shift count used in hashing
-					 * function.  Designed to use high-
-					 * order bits of randomized keys. */
-    int mask;				/* Mask value used in hashing
-					 * function. */
-    int keyType;			/* Type of keys used in this table. 
-					 * It's either TCL_CUSTOM_KEYS,
-					 * TCL_STRING_KEYS, TCL_ONE_WORD_KEYS,
-					 * or an integer giving the number of
-					 * ints that is the size of the key.
-					 */
-#if TCL_PRESERVE_BINARY_COMPATABILITY
+				/* Bucket array used for small tables (to
+				 * avoid mallocs and frees). */
+    int numBuckets;		/* Total number of buckets allocated at
+				 * **bucketPtr. */
+    int numEntries;		/* Total number of entries present in
+				 * table. */
+    int rebuildSize;		/* Enlarge table when numEntries gets to be
+				 * this large. */
+    int downShift;		/* Shift count used in hashing function.
+				 * Designed to use high-order bits of
+				 * randomized keys. */
+    int mask;			/* Mask value used in hashing function. */
+    int keyType;		/* Type of keys used in this table. It's
+				 * either TCL_CUSTOM_KEYS, TCL_STRING_KEYS,
+				 * TCL_ONE_WORD_KEYS, or an integer giving the
+				 * number of ints that is the size of the
+				 * key. */
     Tcl_HashEntry *(*findProc) _ANSI_ARGS_((Tcl_HashTable *tablePtr,
 	    CONST char *key));
     Tcl_HashEntry *(*createProc) _ANSI_ARGS_((Tcl_HashTable *tablePtr,
 	    CONST char *key, int *newPtr));
-#endif
-    Tcl_HashKeyType *typePtr;		/* Type of the keys used in the
-					 * Tcl_HashTable. */
+    Tcl_HashKeyType *typePtr;	/* Type of the keys used in the
+				 * Tcl_HashTable. */
 };
 
 /*
- * Structure definition for information used to keep track of searches
- * through hash tables:
+ * Structure definition for information used to keep track of searches through
+ * hash tables:
  */
 
 typedef struct Tcl_HashSearch {
-    Tcl_HashTable *tablePtr;		/* Table being searched. */
-    int nextIndex;			/* Index of next bucket to be
-					 * enumerated after present one. */
-    Tcl_HashEntry *nextEntryPtr;	/* Next entry to be enumerated in the
-					 * the current bucket. */
+    Tcl_HashTable *tablePtr;	/* Table being searched. */
+    int nextIndex;		/* Index of next bucket to be enumerated after
+				 * present one. */
+    Tcl_HashEntry *nextEntryPtr;/* Next entry to be enumerated in the current
+				 * bucket. */
 } Tcl_HashSearch;
 
 /*
  * Acceptable key types for hash tables:
  *
- * TCL_STRING_KEYS:		The keys are strings, they are copied into
- *				the entry.
+ * TCL_STRING_KEYS:		The keys are strings, they are copied into the
+ *				entry.
  * TCL_ONE_WORD_KEYS:		The keys are pointers, the pointer is stored
  *				in the entry.
  * TCL_CUSTOM_TYPE_KEYS:	The keys are arbitrary types which are copied
@@ -1308,69 +1261,39 @@ typedef struct Tcl_HashSearch {
  * TCL_CUSTOM_PTR_KEYS:		The keys are pointers to arbitrary types, the
  *				pointer is stored in the entry.
  *
- * While maintaining binary compatability the above have to be distinct
- * values as they are used to differentiate between old versions of the
- * hash table which don't have a typePtr and new ones which do. Once binary
- * compatability is discarded in favour of making more wide spread changes
- * TCL_STRING_KEYS can be the same as TCL_CUSTOM_TYPE_KEYS, and
- * TCL_ONE_WORD_KEYS can be the same as TCL_CUSTOM_PTR_KEYS because they
- * simply determine how the key is accessed from the entry and not the
- * behaviour.
+ * While maintaining binary compatability the above have to be distinct values
+ * as they are used to differentiate between old versions of the hash table
+ * which don't have a typePtr and new ones which do. Once binary compatability
+ * is discarded in favour of making more wide spread changes TCL_STRING_KEYS
+ * can be the same as TCL_CUSTOM_TYPE_KEYS, and TCL_ONE_WORD_KEYS can be the
+ * same as TCL_CUSTOM_PTR_KEYS because they simply determine how the key is
+ * accessed from the entry and not the behaviour.
  */
 
 #define TCL_STRING_KEYS		0
 #define TCL_ONE_WORD_KEYS	1
-
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-#   define TCL_CUSTOM_TYPE_KEYS		-2
-#   define TCL_CUSTOM_PTR_KEYS		-1
-#else
-#   define TCL_CUSTOM_TYPE_KEYS		TCL_STRING_KEYS
-#   define TCL_CUSTOM_PTR_KEYS		TCL_ONE_WORD_KEYS
-#endif
+#define TCL_CUSTOM_TYPE_KEYS	-2
+#define TCL_CUSTOM_PTR_KEYS	-1
 
 /*
- * Macros for clients to use to access fields of hash entries:
+ * Structure definition for information used to keep track of searches through
+ * dictionaries. These fields should not be accessed by code outside
+ * tclDictObj.c
  */
 
-#define Tcl_GetHashValue(h) ((h)->clientData)
-#define Tcl_SetHashValue(h, value) ((h)->clientData = (ClientData) (value))
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-#   define Tcl_GetHashKey(tablePtr, h) \
-	((char *) (((tablePtr)->keyType == TCL_ONE_WORD_KEYS || \
-		    (tablePtr)->keyType == TCL_CUSTOM_PTR_KEYS) \
-		   ? (h)->key.oneWordValue \
-		   : (h)->key.string))
-#else
-#   define Tcl_GetHashKey(tablePtr, h) \
-	((char *) (((tablePtr)->keyType == TCL_ONE_WORD_KEYS) \
-		   ? (h)->key.oneWordValue \
-		   : (h)->key.string))
-#endif
-
-/*
- * Macros to use for clients to use to invoke find and create procedures
- * for hash tables:
- */
+typedef struct {
+    void *next;			/* Search position for underlying hash
+				 * table. */
+    int epoch;			/* Epoch marker for dictionary being searched,
+				 * or -1 if search has terminated. */
+    Tcl_Dict dictionaryPtr;	/* Reference to dictionary being searched. */
+} Tcl_DictSearch;
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-#   define Tcl_FindHashEntry(tablePtr, key) \
-	(*((tablePtr)->findProc))(tablePtr, key)
-#   define Tcl_CreateHashEntry(tablePtr, key, newPtr) \
-	(*((tablePtr)->createProc))(tablePtr, key, newPtr)
-#else /* !TCL_PRESERVE_BINARY_COMPATABILITY */
 /*
- * Macro to use new extended version of Tcl_InitHashTable.
+ * Flag values to pass to Tcl_DoOneEvent to disable searches for some kinds of
+ * events:
  */
-#   define Tcl_InitHashTable(tablePtr, keyType) \
-	Tcl_InitHashTableEx(tablePtr, keyType, NULL)
-#endif /* TCL_PRESERVE_BINARY_COMPATABILITY */
-
 
-/*
- * Flag values to pass to Tcl_DoOneEvent to disable searches
- * for some kinds of events:
- */
 #define TCL_DONT_WAIT		(1<<1)
 #define TCL_WINDOW_EVENTS	(1<<2)
 #define TCL_FILE_EVENTS		(1<<3)
@@ -1379,17 +1302,16 @@ typedef struct Tcl_HashSearch {
 #define TCL_ALL_EVENTS		(~TCL_DONT_WAIT)
 
 /*
- * The following structure defines a generic event for the Tcl event
- * system.  These are the things that are queued in calls to Tcl_QueueEvent
- * and serviced later by Tcl_DoOneEvent.  There can be many different
- * kinds of events with different fields, corresponding to window events,
- * timer events, etc.  The structure for a particular event consists of
- * a Tcl_Event header followed by additional information specific to that
- * event.
+ * The following structure defines a generic event for the Tcl event system.
+ * These are the things that are queued in calls to Tcl_QueueEvent and
+ * serviced later by Tcl_DoOneEvent. There can be many different kinds of
+ * events with different fields, corresponding to window events, timer events,
+ * etc. The structure for a particular event consists of a Tcl_Event header
+ * followed by additional information specific to that event.
  */
 
 struct Tcl_Event {
-    Tcl_EventProc *proc;	/* Procedure to call to service this event. */
+    Tcl_EventProc *proc;	/* Function to call to service this event. */
     struct Tcl_Event *nextPtr;	/* Next in list of pending events, or NULL. */
 };
 
@@ -1410,9 +1332,9 @@ typedef enum {
 #define TCL_SERVICE_ALL 1
 
 /*
- * The following structure keeps is used to hold a time value, either as
- * an absolute time (the number of seconds from the epoch) or as an
- * elapsed time. On Unix systems the epoch is Midnight Jan 1, 1970 GMT.
+ * The following structure keeps is used to hold a time value, either as an
+ * absolute time (the number of seconds from the epoch) or as an elapsed time.
+ * On Unix systems the epoch is Midnight Jan 1, 1970 GMT.
  */
 
 typedef struct Tcl_Time {
@@ -1424,20 +1346,30 @@ typedef void (Tcl_SetTimerProc) _ANSI_ARGS_((Tcl_Time *timePtr));
 typedef int (Tcl_WaitForEventProc) _ANSI_ARGS_((Tcl_Time *timePtr));
 
 /*
- * Bits to pass to Tcl_CreateFileHandler and Tcl_CreateChannelHandler
- * to indicate what sorts of events are of interest:
+ * TIP #233 (Virtualized Time)
  */
-#define TCL_READABLE	(1<<1)
-#define TCL_WRITABLE	(1<<2)
-#define TCL_EXCEPTION	(1<<3)
+
+typedef void (Tcl_GetTimeProc)   _ANSI_ARGS_((Tcl_Time *timebuf,
+	ClientData clientData));
+typedef void (Tcl_ScaleTimeProc) _ANSI_ARGS_((Tcl_Time *timebuf,
+	ClientData clientData));
 
 /*
- * Flag values to pass to Tcl_OpenCommandChannel to indicate the
- * disposition of the stdio handles.  TCL_STDIN, TCL_STDOUT, TCL_STDERR,
- * are also used in Tcl_GetStdChannel.
+ * Bits to pass to Tcl_CreateFileHandler and Tcl_CreateChannelHandler to
+ * indicate what sorts of events are of interest:
  */
 
-#define TCL_STDIN		(1<<1)	
+#define TCL_READABLE		(1<<1)
+#define TCL_WRITABLE		(1<<2)
+#define TCL_EXCEPTION		(1<<3)
+
+/*
+ * Flag values to pass to Tcl_OpenCommandChannel to indicate the disposition
+ * of the stdio handles. TCL_STDIN, TCL_STDOUT, TCL_STDERR, are also used in
+ * Tcl_GetStdChannel.
+ */
+
+#define TCL_STDIN		(1<<1)
 #define TCL_STDOUT		(1<<2)
 #define TCL_STDERR		(1<<3)
 #define TCL_ENFORCE_MODE	(1<<4)
@@ -1446,27 +1378,29 @@ typedef int (Tcl_WaitForEventProc) _ANSI_ARGS_((Tcl_Time *timePtr));
  * Bits passed to Tcl_DriverClose2Proc to indicate which side of a channel
  * should be closed.
  */
-#define TCL_CLOSE_READ	(1<<1)
-#define TCL_CLOSE_WRITE	(1<<2)
+
+#define TCL_CLOSE_READ		(1<<1)
+#define TCL_CLOSE_WRITE		(1<<2)
 
 /*
- * Value to use as the closeProc for a channel that supports the
- * close2Proc interface.
+ * Value to use as the closeProc for a channel that supports the close2Proc
+ * interface.
  */
 
-#define TCL_CLOSE2PROC	((Tcl_DriverCloseProc *)1)
+#define TCL_CLOSE2PROC		((Tcl_DriverCloseProc *) 1)
 
 /*
- * Channel version tag.  This was introduced in 8.3.2/8.4.
+ * Channel version tag. This was introduced in 8.3.2/8.4.
  */
 
 #define TCL_CHANNEL_VERSION_1	((Tcl_ChannelTypeVersion) 0x1)
 #define TCL_CHANNEL_VERSION_2	((Tcl_ChannelTypeVersion) 0x2)
 #define TCL_CHANNEL_VERSION_3	((Tcl_ChannelTypeVersion) 0x3)
 #define TCL_CHANNEL_VERSION_4	((Tcl_ChannelTypeVersion) 0x4)
+#define TCL_CHANNEL_VERSION_5	((Tcl_ChannelTypeVersion) 0x5)
 
 /*
- * TIP #218: Channel Actions, Ids for Tcl_DriverThreadActionProc
+ * TIP #218: Channel Actions, Ids for Tcl_DriverThreadActionProc.
  */
 
 #define TCL_CHANNEL_THREAD_INSERT (0)
@@ -1490,7 +1424,7 @@ typedef int	(Tcl_DriverSeekProc) _ANSI_ARGS_((ClientData instanceData,
 		    long offset, int mode, int *errorCodePtr));
 typedef int	(Tcl_DriverSetOptionProc) _ANSI_ARGS_((
 		    ClientData instanceData, Tcl_Interp *interp,
-	            CONST char *optionName, CONST char *value));
+		    CONST char *optionName, CONST char *value));
 typedef int	(Tcl_DriverGetOptionProc) _ANSI_ARGS_((
 		    ClientData instanceData, Tcl_Interp *interp,
 		    CONST84 char *optionName, Tcl_DString *dsPtr));
@@ -1499,125 +1433,111 @@ typedef void	(Tcl_DriverWatchProc) _ANSI_ARGS_((
 typedef int	(Tcl_DriverGetHandleProc) _ANSI_ARGS_((
 		    ClientData instanceData, int direction,
 		    ClientData *handlePtr));
-typedef int	(Tcl_DriverFlushProc) _ANSI_ARGS_((
-		    ClientData instanceData));
+typedef int	(Tcl_DriverFlushProc) _ANSI_ARGS_((ClientData instanceData));
 typedef int	(Tcl_DriverHandlerProc) _ANSI_ARGS_((
 		    ClientData instanceData, int interestMask));
 typedef Tcl_WideInt (Tcl_DriverWideSeekProc) _ANSI_ARGS_((
 		    ClientData instanceData, Tcl_WideInt offset,
 		    int mode, int *errorCodePtr));
-
-  /* TIP #218, Channel Thread Actions */
-typedef void     (Tcl_DriverThreadActionProc) _ANSI_ARGS_ ((
-		    ClientData instanceData, int action));
-
 /*
- * The following declarations either map ckalloc and ckfree to
- * malloc and free, or they map them to procedures with all sorts
- * of debugging hooks defined in tclCkalloc.c.
+ * TIP #218, Channel Thread Actions
  */
-#ifdef TCL_MEM_DEBUG
-
-#   define ckalloc(x) Tcl_DbCkalloc(x, __FILE__, __LINE__)
-#   define ckfree(x)  Tcl_DbCkfree(x, __FILE__, __LINE__)
-#   define ckrealloc(x,y) Tcl_DbCkrealloc((x), (y),__FILE__, __LINE__)
-#   define attemptckalloc(x) Tcl_AttemptDbCkalloc(x, __FILE__, __LINE__)
-#   define attemptckrealloc(x,y) Tcl_AttemptDbCkrealloc((x), (y), __FILE__, __LINE__)
-#else /* !TCL_MEM_DEBUG */
-
+typedef void	(Tcl_DriverThreadActionProc) _ANSI_ARGS_ ((
+		    ClientData instanceData, int action));
 /*
- * If we are not using the debugging allocator, we should call the 
- * Tcl_Alloc, et al. routines in order to guarantee that every module
- * is using the same memory allocator both inside and outside of the
- * Tcl library.
+ * TIP #208, File Truncation (etc.)
  */
-#   define ckalloc(x) Tcl_Alloc(x)
-#   define ckfree(x) Tcl_Free(x)
-#   define ckrealloc(x,y) Tcl_Realloc(x,y)
-#   define attemptckalloc(x) Tcl_AttemptAlloc(x)
-#   define attemptckrealloc(x,y) Tcl_AttemptRealloc(x,y)
-#   define Tcl_InitMemory(x)
-#   define Tcl_DumpActiveMemory(x)
-#   define Tcl_ValidateAllMemory(x,y)
-
-#endif /* !TCL_MEM_DEBUG */
+typedef int	(Tcl_DriverTruncateProc) _ANSI_ARGS_((
+		    ClientData instanceData, Tcl_WideInt length));
 
 /*
  * struct Tcl_ChannelType:
  *
- * One such structure exists for each type (kind) of channel.
- * It collects together in one place all the functions that are
- * part of the specific channel type.
+ * One such structure exists for each type (kind) of channel. It collects
+ * together in one place all the functions that are part of the specific
+ * channel type.
  *
- * It is recommend that the Tcl_Channel* functions are used to access
- * elements of this structure, instead of direct accessing.
+ * It is recommend that the Tcl_Channel* functions are used to access elements
+ * of this structure, instead of direct accessing.
  */
 
 typedef struct Tcl_ChannelType {
-    char *typeName;			/* The name of the channel type in Tcl
-                                         * commands. This storage is owned by
-                                         * channel type. */
-    Tcl_ChannelTypeVersion version;	/* Version of the channel type. */
-    Tcl_DriverCloseProc *closeProc;	/* Procedure to call to close the
-					 * channel, or TCL_CLOSE2PROC if the
-					 * close2Proc should be used
-					 * instead. */
-    Tcl_DriverInputProc *inputProc;	/* Procedure to call for input
-					 * on channel. */
-    Tcl_DriverOutputProc *outputProc;	/* Procedure to call for output
-					 * on channel. */
-    Tcl_DriverSeekProc *seekProc;	/* Procedure to call to seek
-					 * on the channel. May be NULL. */
+    char *typeName;		/* The name of the channel type in Tcl
+				 * commands. This storage is owned by channel
+				 * type. */
+    Tcl_ChannelTypeVersion version;
+				/* Version of the channel type. */
+    Tcl_DriverCloseProc *closeProc;
+				/* Function to call to close the channel, or
+				 * TCL_CLOSE2PROC if the close2Proc should be
+				 * used instead. */
+    Tcl_DriverInputProc *inputProc;
+				/* Function to call for input on channel. */
+    Tcl_DriverOutputProc *outputProc;
+				/* Function to call for output on channel. */
+    Tcl_DriverSeekProc *seekProc;
+				/* Function to call to seek on the channel.
+				 * May be NULL. */
     Tcl_DriverSetOptionProc *setOptionProc;
-					/* Set an option on a channel. */
+				/* Set an option on a channel. */
     Tcl_DriverGetOptionProc *getOptionProc;
-					/* Get an option from a channel. */
-    Tcl_DriverWatchProc *watchProc;	/* Set up the notifier to watch
-					 * for events on this channel. */
+				/* Get an option from a channel. */
+    Tcl_DriverWatchProc *watchProc;
+				/* Set up the notifier to watch for events on
+				 * this channel. */
     Tcl_DriverGetHandleProc *getHandleProc;
-					/* Get an OS handle from the channel
-					 * or NULL if not supported. */
-    Tcl_DriverClose2Proc *close2Proc;	/* Procedure to call to close the
-					 * channel if the device supports
-					 * closing the read & write sides
-					 * independently. */
+				/* Get an OS handle from the channel or NULL
+				 * if not supported. */
+    Tcl_DriverClose2Proc *close2Proc;
+				/* Function to call to close the channel if
+				 * the device supports closing the read &
+				 * write sides independently. */
     Tcl_DriverBlockModeProc *blockModeProc;
-					/* Set blocking mode for the
-					 * raw channel. May be NULL. */
+				/* Set blocking mode for the raw channel. May
+				 * be NULL. */
     /*
-     * Only valid in TCL_CHANNEL_VERSION_2 channels or later
+     * Only valid in TCL_CHANNEL_VERSION_2 channels or later.
      */
-    Tcl_DriverFlushProc *flushProc;	/* Procedure to call to flush a
-					 * channel. May be NULL. */
-    Tcl_DriverHandlerProc *handlerProc;	/* Procedure to call to handle a
-					 * channel event.  This will be passed
-					 * up the stacked channel chain. */
+    Tcl_DriverFlushProc *flushProc;
+				/* Function to call to flush a channel. May be
+				 * NULL. */
+    Tcl_DriverHandlerProc *handlerProc;
+				/* Function to call to handle a channel event.
+				 * This will be passed up the stacked channel
+				 * chain. */
     /*
-     * Only valid in TCL_CHANNEL_VERSION_3 channels or later
+     * Only valid in TCL_CHANNEL_VERSION_3 channels or later.
      */
     Tcl_DriverWideSeekProc *wideSeekProc;
-					/* Procedure to call to seek
-					 * on the channel which can
-					 * handle 64-bit offsets. May be
-					 * NULL, and must be NULL if
-					 * seekProc is NULL. */
-
-     /*
-      * Only valid in TCL_CHANNEL_VERSION_4 channels or later
-      * TIP #218, Channel Thread Actions
-      */
-     Tcl_DriverThreadActionProc *threadActionProc;
- 					/* Procedure to call to notify
- 					 * the driver of thread specific
- 					 * activity for a channel.
-					 * May be NULL. */
+				/* Function to call to seek on the channel
+				 * which can handle 64-bit offsets. May be
+				 * NULL, and must be NULL if seekProc is
+				 * NULL. */
+    /*
+     * Only valid in TCL_CHANNEL_VERSION_4 channels or later.
+     * TIP #218, Channel Thread Actions.
+     */
+    Tcl_DriverThreadActionProc *threadActionProc;
+				/* Function to call to notify the driver of
+				 * thread specific activity for a channel. May
+				 * be NULL. */
+
+    /*
+     * Only valid in TCL_CHANNEL_VERSION_5 channels or later.
+     * TIP #208, File Truncation.
+     */
+    Tcl_DriverTruncateProc *truncateProc;
+				/* Function to call to truncate the underlying
+				 * file to a particular length. May be NULL if
+				 * the channel does not support truncation. */
 } Tcl_ChannelType;
 
 /*
- * The following flags determine whether the blockModeProc above should
- * set the channel into blocking or nonblocking mode. They are passed
- * as arguments to the blockModeProc procedure in the above structure.
+ * The following flags determine whether the blockModeProc above should set
+ * the channel into blocking or nonblocking mode. They are passed as arguments
+ * to the blockModeProc function in the above structure.
  */
+
 #define TCL_MODE_BLOCKING	0	/* Put channel into blocking mode. */
 #define TCL_MODE_NONBLOCKING	1	/* Put channel into nonblocking
 					 * mode. */
@@ -1632,23 +1552,20 @@ typedef enum Tcl_PathType {
     TCL_PATH_VOLUME_RELATIVE
 } Tcl_PathType;
 
-/* 
- * The following structure is used to pass glob type data amongst
- * the various glob routines and Tcl_FSMatchInDirectory.
+/*
+ * The following structure is used to pass glob type data amongst the various
+ * glob routines and Tcl_FSMatchInDirectory.
  */
+
 typedef struct Tcl_GlobTypeData {
-    /* Corresponds to bcdpfls as in 'find -t' */
-    int type;
-    /* Corresponds to file permissions */
-    int perm;
-    /* Acceptable mac type */
-    Tcl_Obj* macType;
-    /* Acceptable mac creator */
-    Tcl_Obj* macCreator;
+    int type;			/* Corresponds to bcdpfls as in 'find -t'. */
+    int perm;			/* Corresponds to file permissions. */
+    Tcl_Obj *macType;		/* Acceptable Mac type. */
+    Tcl_Obj *macCreator;	/* Acceptable Mac creator. */
 } Tcl_GlobTypeData;
 
 /*
- * type and permission definitions for glob command
+ * Type and permission definitions for glob command.
  */
 
 #define TCL_GLOB_TYPE_BLOCK		(1<<0)
@@ -1667,65 +1584,69 @@ typedef struct Tcl_GlobTypeData {
 #define TCL_GLOB_PERM_X			(1<<4)
 
 /*
+ * Flags for the unload callback function.
+ */
+
+#define TCL_UNLOAD_DETACH_FROM_INTERPRETER	(1<<0)
+#define TCL_UNLOAD_DETACH_FROM_PROCESS		(1<<1)
+
+/*
  * Typedefs for the various filesystem operations:
  */
 
 typedef int (Tcl_FSStatProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_StatBuf *buf));
 typedef int (Tcl_FSAccessProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, int mode));
-typedef Tcl_Channel (Tcl_FSOpenFileChannelProc) 
-	_ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr, 
-	int mode, int permissions));
-typedef int (Tcl_FSMatchInDirectoryProc) _ANSI_ARGS_((Tcl_Interp* interp, 
-	Tcl_Obj *result, Tcl_Obj *pathPtr, CONST char *pattern, 
+typedef Tcl_Channel (Tcl_FSOpenFileChannelProc) _ANSI_ARGS_((
+	Tcl_Interp *interp, Tcl_Obj *pathPtr, int mode, int permissions));
+typedef int (Tcl_FSMatchInDirectoryProc) _ANSI_ARGS_((Tcl_Interp *interp,
+	Tcl_Obj *result, Tcl_Obj *pathPtr, CONST char *pattern,
 	Tcl_GlobTypeData * types));
-typedef Tcl_Obj* (Tcl_FSGetCwdProc) _ANSI_ARGS_((Tcl_Interp *interp));
+typedef Tcl_Obj * (Tcl_FSGetCwdProc) _ANSI_ARGS_((Tcl_Interp *interp));
 typedef int (Tcl_FSChdirProc) _ANSI_ARGS_((Tcl_Obj *pathPtr));
-typedef int (Tcl_FSLstatProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-					   Tcl_StatBuf *buf));
+typedef int (Tcl_FSLstatProc) _ANSI_ARGS_((Tcl_Obj *pathPtr,
+	Tcl_StatBuf *buf));
 typedef int (Tcl_FSCreateDirectoryProc) _ANSI_ARGS_((Tcl_Obj *pathPtr));
 typedef int (Tcl_FSDeleteFileProc) _ANSI_ARGS_((Tcl_Obj *pathPtr));
 typedef int (Tcl_FSCopyDirectoryProc) _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
-	   Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr));
+	Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr));
 typedef int (Tcl_FSCopyFileProc) _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
-			    Tcl_Obj *destPathPtr));
+	Tcl_Obj *destPathPtr));
 typedef int (Tcl_FSRemoveDirectoryProc) _ANSI_ARGS_((Tcl_Obj *pathPtr,
-			    int recursive, Tcl_Obj **errorPtr));
+	int recursive, Tcl_Obj **errorPtr));
 typedef int (Tcl_FSRenameFileProc) _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
-			    Tcl_Obj *destPathPtr));
+	Tcl_Obj *destPathPtr));
 typedef void (Tcl_FSUnloadFileProc) _ANSI_ARGS_((Tcl_LoadHandle loadHandle));
-typedef Tcl_Obj* (Tcl_FSListVolumesProc) _ANSI_ARGS_((void));
+typedef Tcl_Obj * (Tcl_FSListVolumesProc) _ANSI_ARGS_((void));
 /* We have to declare the utime structure here. */
 struct utimbuf;
-typedef int (Tcl_FSUtimeProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-					   struct utimbuf *tval));
-typedef int (Tcl_FSNormalizePathProc) _ANSI_ARGS_((Tcl_Interp *interp, 
-			 Tcl_Obj *pathPtr, int nextCheckpoint));
+typedef int (Tcl_FSUtimeProc) _ANSI_ARGS_((Tcl_Obj *pathPtr,
+	struct utimbuf *tval));
+typedef int (Tcl_FSNormalizePathProc) _ANSI_ARGS_((Tcl_Interp *interp,
+	Tcl_Obj *pathPtr, int nextCheckpoint));
 typedef int (Tcl_FSFileAttrsGetProc) _ANSI_ARGS_((Tcl_Interp *interp,
-			    int index, Tcl_Obj *pathPtr,
-			    Tcl_Obj **objPtrRef));
-typedef CONST char** (Tcl_FSFileAttrStringsProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-			    Tcl_Obj** objPtrRef));
+	int index, Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef));
+typedef CONST char ** (Tcl_FSFileAttrStringsProc) _ANSI_ARGS_((
+	Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef));
 typedef int (Tcl_FSFileAttrsSetProc) _ANSI_ARGS_((Tcl_Interp *interp,
-			    int index, Tcl_Obj *pathPtr,
-			    Tcl_Obj *objPtr));
-typedef Tcl_Obj* (Tcl_FSLinkProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-					       Tcl_Obj *toPtr, int linkType));
-typedef int (Tcl_FSLoadFileProc) _ANSI_ARGS_((Tcl_Interp * interp, 
-			    Tcl_Obj *pathPtr,
-			    Tcl_LoadHandle *handlePtr,
-			    Tcl_FSUnloadFileProc **unloadProcPtr));
-typedef int (Tcl_FSPathInFilesystemProc) _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-			    ClientData *clientDataPtr));
-typedef Tcl_Obj* (Tcl_FSFilesystemPathTypeProc) 
-			    _ANSI_ARGS_((Tcl_Obj *pathPtr));
-typedef Tcl_Obj* (Tcl_FSFilesystemSeparatorProc) 
-			    _ANSI_ARGS_((Tcl_Obj *pathPtr));
+	int index, Tcl_Obj *pathPtr, Tcl_Obj *objPtr));
+typedef Tcl_Obj * (Tcl_FSLinkProc) _ANSI_ARGS_((Tcl_Obj *pathPtr,
+	Tcl_Obj *toPtr, int linkType));
+typedef int (Tcl_FSLoadFileProc) _ANSI_ARGS_((Tcl_Interp * interp,
+	Tcl_Obj *pathPtr, Tcl_LoadHandle *handlePtr,
+	Tcl_FSUnloadFileProc **unloadProcPtr));
+typedef int (Tcl_FSPathInFilesystemProc) _ANSI_ARGS_((Tcl_Obj *pathPtr,
+	ClientData *clientDataPtr));
+typedef Tcl_Obj * (Tcl_FSFilesystemPathTypeProc) _ANSI_ARGS_((
+	Tcl_Obj *pathPtr));
+typedef Tcl_Obj * (Tcl_FSFilesystemSeparatorProc) _ANSI_ARGS_((
+	Tcl_Obj *pathPtr));
 typedef void (Tcl_FSFreeInternalRepProc) _ANSI_ARGS_((ClientData clientData));
-typedef ClientData (Tcl_FSDupInternalRepProc) 
-			    _ANSI_ARGS_((ClientData clientData));
-typedef Tcl_Obj* (Tcl_FSInternalToNormalizedProc) 
-			    _ANSI_ARGS_((ClientData clientData));
-typedef ClientData (Tcl_FSCreateInternalRepProc) _ANSI_ARGS_((Tcl_Obj *pathPtr));
+typedef ClientData (Tcl_FSDupInternalRepProc) _ANSI_ARGS_((
+	ClientData clientData));
+typedef Tcl_Obj * (Tcl_FSInternalToNormalizedProc) _ANSI_ARGS_((
+	ClientData clientData));
+typedef ClientData (Tcl_FSCreateInternalRepProc) _ANSI_ARGS_((
+	Tcl_Obj *pathPtr));
 
 typedef struct Tcl_FSVersion_ *Tcl_FSVersion;
 
@@ -1743,207 +1664,181 @@ typedef struct Tcl_FSVersion_ *Tcl_FSVersion;
 /*
  * struct Tcl_Filesystem:
  *
- * One such structure exists for each type (kind) of filesystem.
- * It collects together in one place all the functions that are
- * part of the specific filesystem.  Tcl always accesses the
- * filesystem through one of these structures.
- * 
- * Not all entries need be non-NULL; any which are NULL are simply
- * ignored.  However, a complete filesystem should provide all of
- * these functions.  The explanations in the structure show
- * the importance of each function.
+ * One such structure exists for each type (kind) of filesystem. It collects
+ * together in one place all the functions that are part of the specific
+ * filesystem. Tcl always accesses the filesystem through one of these
+ * structures.
+ *
+ * Not all entries need be non-NULL; any which are NULL are simply ignored.
+ * However, a complete filesystem should provide all of these functions. The
+ * explanations in the structure show the importance of each function.
  */
 
 typedef struct Tcl_Filesystem {
-    CONST char *typeName;   /* The name of the filesystem. */
-    int structureLength;    /* Length of this structure, so future
-			     * binary compatibility can be assured. */
-    Tcl_FSVersion version;  
-			    /* Version of the filesystem type. */
+    CONST char *typeName;	/* The name of the filesystem. */
+    int structureLength;	/* Length of this structure, so future binary
+				 * compatibility can be assured. */
+    Tcl_FSVersion version;	/* Version of the filesystem type. */
     Tcl_FSPathInFilesystemProc *pathInFilesystemProc;
-			    /* Function to check whether a path is in 
-			     * this filesystem.  This is the most
-			     * important filesystem procedure. */
+				/* Function to check whether a path is in this
+				 * filesystem. This is the most important
+				 * filesystem function. */
     Tcl_FSDupInternalRepProc *dupInternalRepProc;
-			    /* Function to duplicate internal fs rep.  May
-			     * be NULL (but then fs is less efficient). */ 
+				/* Function to duplicate internal fs rep. May
+				 * be NULL (but then fs is less efficient). */
     Tcl_FSFreeInternalRepProc *freeInternalRepProc;
-			    /* Function to free internal fs rep.  Must
-			     * be implemented, if internal representations
-			     * need freeing, otherwise it can be NULL. */ 
+				/* Function to free internal fs rep. Must be
+				 * implemented if internal representations
+				 * need freeing, otherwise it can be NULL. */
     Tcl_FSInternalToNormalizedProc *internalToNormalizedProc;
-			    /* Function to convert internal representation
-			     * to a normalized path.  Only required if
-			     * the fs creates pure path objects with no
-			     * string/path representation. */
+				/* Function to convert internal representation
+				 * to a normalized path. Only required if the
+				 * fs creates pure path objects with no
+				 * string/path representation. */
     Tcl_FSCreateInternalRepProc *createInternalRepProc;
-			    /* Function to create a filesystem-specific
-			     * internal representation.  May be NULL
-			     * if paths have no internal representation, 
-			     * or if the Tcl_FSPathInFilesystemProc
-			     * for this filesystem always immediately 
-			     * creates an internal representation for 
-			     * paths it accepts. */
-    Tcl_FSNormalizePathProc *normalizePathProc;       
-			    /* Function to normalize a path.  Should
-			     * be implemented for all filesystems
-			     * which can have multiple string 
-			     * representations for the same path 
-			     * object. */
+				/* Function to create a filesystem-specific
+				 * internal representation. May be NULL if
+				 * paths have no internal representation, or
+				 * if the Tcl_FSPathInFilesystemProc for this
+				 * filesystem always immediately creates an
+				 * internal representation for paths it
+				 * accepts. */
+    Tcl_FSNormalizePathProc *normalizePathProc;
+				/* Function to normalize a path.  Should be
+				 * implemented for all filesystems which can
+				 * have multiple string representations for
+				 * the same path object. */
     Tcl_FSFilesystemPathTypeProc *filesystemPathTypeProc;
-			    /* Function to determine the type of a 
-			     * path in this filesystem.  May be NULL. */
+				/* Function to determine the type of a path in
+				 * this filesystem. May be NULL. */
     Tcl_FSFilesystemSeparatorProc *filesystemSeparatorProc;
-			    /* Function to return the separator 
-			     * character(s) for this filesystem.  Must
-			     * be implemented. */
-    Tcl_FSStatProc *statProc; 
-			    /* 
-			     * Function to process a 'Tcl_FSStat()'
-			     * call.  Must be implemented for any
-			     * reasonable filesystem.
-			     */
-    Tcl_FSAccessProc *accessProc;	    
-			    /* 
-			     * Function to process a 'Tcl_FSAccess()'
-			     * call.  Must be implemented for any
-			     * reasonable filesystem.
-			     */
-    Tcl_FSOpenFileChannelProc *openFileChannelProc; 
-			    /* 
-			     * Function to process a
-			     * 'Tcl_FSOpenFileChannel()' call.  Must be
-			     * implemented for any reasonable
-			     * filesystem.
-			     */
-    Tcl_FSMatchInDirectoryProc *matchInDirectoryProc;  
-			    /* Function to process a 
-			     * 'Tcl_FSMatchInDirectory()'.  If not
-			     * implemented, then glob and recursive
-			     * copy functionality will be lacking in
-			     * the filesystem. */
-    Tcl_FSUtimeProc *utimeProc;       
-			    /* Function to process a 
-			     * 'Tcl_FSUtime()' call.  Required to
-			     * allow setting (not reading) of times 
-			     * with 'file mtime', 'file atime' and
-			     * the open-r/open-w/fcopy implementation
-			     * of 'file copy'. */
-    Tcl_FSLinkProc *linkProc; 
-			    /* Function to process a 
-			     * 'Tcl_FSLink()' call.  Should be
-			     * implemented only if the filesystem supports
-			     * links (reading or creating). */
-    Tcl_FSListVolumesProc *listVolumesProc;	    
-			    /* Function to list any filesystem volumes 
-			     * added by this filesystem.  Should be
-			     * implemented only if the filesystem adds
-			     * volumes at the head of the filesystem. */
+				/* Function to return the separator
+				 * character(s) for this filesystem. Must be
+				 * implemented. */
+    Tcl_FSStatProc *statProc;	/* Function to process a 'Tcl_FSStat()' call.
+				 * Must be implemented for any reasonable
+				 * filesystem. */
+    Tcl_FSAccessProc *accessProc;
+				/* Function to process a 'Tcl_FSAccess()'
+				 * call. Must be implemented for any
+				 * reasonable filesystem. */
+    Tcl_FSOpenFileChannelProc *openFileChannelProc;
+				/* Function to process a
+				 * 'Tcl_FSOpenFileChannel()' call. Must be
+				 * implemented for any reasonable
+				 * filesystem. */
+    Tcl_FSMatchInDirectoryProc *matchInDirectoryProc;
+				/* Function to process a
+				 * 'Tcl_FSMatchInDirectory()'.  If not
+				 * implemented, then glob and recursive copy
+				 * functionality will be lacking in the
+				 * filesystem. */
+    Tcl_FSUtimeProc *utimeProc;	/* Function to process a 'Tcl_FSUtime()' call.
+				 * Required to allow setting (not reading) of
+				 * times with 'file mtime', 'file atime' and
+				 * the open-r/open-w/fcopy implementation of
+				 * 'file copy'. */
+    Tcl_FSLinkProc *linkProc;	/* Function to process a 'Tcl_FSLink()' call.
+				 * Should be implemented only if the
+				 * filesystem supports links (reading or
+				 * creating). */
+    Tcl_FSListVolumesProc *listVolumesProc;
+				/* Function to list any filesystem volumes
+				 * added by this filesystem. Should be
+				 * implemented only if the filesystem adds
+				 * volumes at the head of the filesystem. */
     Tcl_FSFileAttrStringsProc *fileAttrStringsProc;
-			    /* Function to list all attributes strings 
-			     * which are valid for this filesystem.  
-			     * If not implemented the filesystem will
-			     * not support the 'file attributes' command.
-			     * This allows arbitrary additional information
-			     * to be attached to files in the filesystem. */
+				/* Function to list all attributes strings
+				 * which are valid for this filesystem. If not
+				 * implemented the filesystem will not support
+				 * the 'file attributes' command. This allows
+				 * arbitrary additional information to be
+				 * attached to files in the filesystem. */
     Tcl_FSFileAttrsGetProc *fileAttrsGetProc;
-			    /* Function to process a 
-			     * 'Tcl_FSFileAttrsGet()' call, used by
-			     * 'file attributes'. */
+				/* Function to process a
+				 * 'Tcl_FSFileAttrsGet()' call, used by 'file
+				 * attributes'. */
     Tcl_FSFileAttrsSetProc *fileAttrsSetProc;
-			    /* Function to process a 
-			     * 'Tcl_FSFileAttrsSet()' call, used by
-			     * 'file attributes'.  */
-    Tcl_FSCreateDirectoryProc *createDirectoryProc;	    
-			    /* Function to process a 
-			     * 'Tcl_FSCreateDirectory()' call. Should
-			     * be implemented unless the FS is
-			     * read-only. */
-    Tcl_FSRemoveDirectoryProc *removeDirectoryProc;	    
-			    /* Function to process a 
-			     * 'Tcl_FSRemoveDirectory()' call. Should
-			     * be implemented unless the FS is
-			     * read-only. */
-    Tcl_FSDeleteFileProc *deleteFileProc;	    
-			    /* Function to process a 
-			     * 'Tcl_FSDeleteFile()' call.  Should
-			     * be implemented unless the FS is
-			     * read-only. */
-    Tcl_FSCopyFileProc *copyFileProc; 
-			    /* Function to process a 
-			     * 'Tcl_FSCopyFile()' call.  If not
-			     * implemented Tcl will fall back
-			     * on open-r, open-w and fcopy as
-			     * a copying mechanism, for copying
-			     * actions initiated in Tcl (not C). */
-    Tcl_FSRenameFileProc *renameFileProc;	    
-			    /* Function to process a 
-			     * 'Tcl_FSRenameFile()' call.  If not
-			     * implemented, Tcl will fall back on
-			     * a copy and delete mechanism, for 
-			     * rename actions initiated in Tcl (not C). */
-    Tcl_FSCopyDirectoryProc *copyDirectoryProc;	    
-			    /* Function to process a 
-			     * 'Tcl_FSCopyDirectory()' call.  If
-			     * not implemented, Tcl will fall back
-			     * on a recursive create-dir, file copy
-			     * mechanism, for copying actions
-			     * initiated in Tcl (not C). */
-    Tcl_FSLstatProc *lstatProc;	    
-			    /* Function to process a 
-			     * 'Tcl_FSLstat()' call.  If not implemented,
-			     * Tcl will attempt to use the 'statProc'
-			     * defined above instead. */
-    Tcl_FSLoadFileProc *loadFileProc; 
-			    /* Function to process a 
-			     * 'Tcl_FSLoadFile()' call.  If not
-			     * implemented, Tcl will fall back on
-			     * a copy to native-temp followed by a 
-			     * Tcl_FSLoadFile on that temporary copy. */
-    Tcl_FSGetCwdProc *getCwdProc;     
-			    /* 
-			     * Function to process a 'Tcl_FSGetCwd()'
-			     * call.  Most filesystems need not
-			     * implement this.  It will usually only be
-			     * called once, if 'getcwd' is called
-			     * before 'chdir'.  May be NULL.
-			     */
-    Tcl_FSChdirProc *chdirProc;	    
-			    /* 
-			     * Function to process a 'Tcl_FSChdir()'
-			     * call.  If filesystems do not implement
-			     * this, it will be emulated by a series of
-			     * directory access checks.  Otherwise,
-			     * virtual filesystems which do implement
-			     * it need only respond with a positive
-			     * return result if the dirName is a valid
-			     * directory in their filesystem.  They
-			     * need not remember the result, since that
-			     * will be automatically remembered for use
-			     * by GetCwd.  Real filesystems should
-			     * carry out the correct action (i.e. call
-			     * the correct system 'chdir' api).  If not
-			     * implemented, then 'cd' and 'pwd' will
-			     * fail inside the filesystem.
-			     */
+				/* Function to process a
+				 * 'Tcl_FSFileAttrsSet()' call, used by 'file
+				 * attributes'.  */
+    Tcl_FSCreateDirectoryProc *createDirectoryProc;
+				/* Function to process a
+				 * 'Tcl_FSCreateDirectory()' call. Should be
+				 * implemented unless the FS is read-only. */
+    Tcl_FSRemoveDirectoryProc *removeDirectoryProc;
+				/* Function to process a
+				 * 'Tcl_FSRemoveDirectory()' call. Should be
+				 * implemented unless the FS is read-only. */
+    Tcl_FSDeleteFileProc *deleteFileProc;
+				/* Function to process a 'Tcl_FSDeleteFile()'
+				 * call. Should be implemented unless the FS
+				 * is read-only. */
+    Tcl_FSCopyFileProc *copyFileProc;
+				/* Function to process a 'Tcl_FSCopyFile()'
+				 * call. If not implemented Tcl will fall back
+				 * on open-r, open-w and fcopy as a copying
+				 * mechanism, for copying actions initiated in
+				 * Tcl (not C). */
+    Tcl_FSRenameFileProc *renameFileProc;
+				/* Function to process a 'Tcl_FSRenameFile()'
+				 * call. If not implemented, Tcl will fall
+				 * back on a copy and delete mechanism, for
+				 * rename actions initiated in Tcl (not C). */
+    Tcl_FSCopyDirectoryProc *copyDirectoryProc;
+				/* Function to process a
+				 * 'Tcl_FSCopyDirectory()' call. If not
+				 * implemented, Tcl will fall back on a
+				 * recursive create-dir, file copy mechanism,
+				 * for copying actions initiated in Tcl (not
+				 * C). */
+    Tcl_FSLstatProc *lstatProc;	/* Function to process a 'Tcl_FSLstat()' call.
+				 * If not implemented, Tcl will attempt to use
+				 * the 'statProc' defined above instead. */
+    Tcl_FSLoadFileProc *loadFileProc;
+				/* Function to process a 'Tcl_FSLoadFile()'
+				 * call. If not implemented, Tcl will fall
+				 * back on a copy to native-temp followed by a
+				 * Tcl_FSLoadFile on that temporary copy. */
+    Tcl_FSGetCwdProc *getCwdProc;
+				/* Function to process a 'Tcl_FSGetCwd()'
+				 * call. Most filesystems need not implement
+				 * this. It will usually only be called once,
+				 * if 'getcwd' is called before 'chdir'. May
+				 * be NULL. */
+    Tcl_FSChdirProc *chdirProc;	/* Function to process a 'Tcl_FSChdir()' call.
+				 * If filesystems do not implement this, it
+				 * will be emulated by a series of directory
+				 * access checks. Otherwise, virtual
+				 * filesystems which do implement it need only
+				 * respond with a positive return result if
+				 * the dirName is a valid directory in their
+				 * filesystem. They need not remember the
+				 * result, since that will be automatically
+				 * remembered for use by GetCwd. Real
+				 * filesystems should carry out the correct
+				 * action (i.e. call the correct system
+				 * 'chdir' api). If not implemented, then 'cd'
+				 * and 'pwd' will fail inside the
+				 * filesystem. */
 } Tcl_Filesystem;
 
 /*
- * The following definitions are used as values for the 'linkAction' flag
- * to Tcl_FSLink, or the linkProc of any filesystem.  Any combination
- * of flags can be given.  For link creation, the linkProc should create
- * a link which matches any of the types given.
- * 
- * TCL_CREATE_SYMBOLIC_LINK:  Create a symbolic or soft link.
- * TCL_CREATE_HARD_LINK:      Create a hard link.
+ * The following definitions are used as values for the 'linkAction' flag to
+ * Tcl_FSLink, or the linkProc of any filesystem. Any combination of flags can
+ * be given. For link creation, the linkProc should create a link which
+ * matches any of the types given.
+ *
+ * TCL_CREATE_SYMBOLIC_LINK -	Create a symbolic or soft link.
+ * TCL_CREATE_HARD_LINK -	Create a hard link.
  */
 
-#define TCL_CREATE_SYMBOLIC_LINK   0x01
-#define TCL_CREATE_HARD_LINK       0x02
+#define TCL_CREATE_SYMBOLIC_LINK	0x01
+#define TCL_CREATE_HARD_LINK		0x02
 
 /*
- * The following structure represents the Notifier functions that
- * you can override with the Tcl_SetNotifier call.
+ * The following structure represents the Notifier functions that you can
+ * override with the Tcl_SetNotifier call.
  */
 
 typedef struct Tcl_NotifierProcs {
@@ -1958,163 +1853,159 @@ typedef struct Tcl_NotifierProcs {
 } Tcl_NotifierProcs;
 
 /*
- * The following structure represents a user-defined encoding.  It collects
+ * The following structure represents a user-defined encoding. It collects
  * together all the functions that are used by the specific encoding.
  */
 
 typedef struct Tcl_EncodingType {
-    CONST char *encodingName;	/* The name of the encoding, e.g.  "euc-jp".
+    CONST char *encodingName;	/* The name of the encoding, e.g. "euc-jp".
 				 * This name is the unique key for this
 				 * encoding type. */
     Tcl_EncodingConvertProc *toUtfProc;
-				/* Procedure to convert from external
-				 * encoding into UTF-8. */
+				/* Function to convert from external encoding
+				 * into UTF-8. */
     Tcl_EncodingConvertProc *fromUtfProc;
-				/* Procedure to convert from UTF-8 into
+				/* Function to convert from UTF-8 into
 				 * external encoding. */
     Tcl_EncodingFreeProc *freeProc;
-				/* If non-NULL, procedure to call when this
+				/* If non-NULL, function to call when this
 				 * encoding is deleted. */
     ClientData clientData;	/* Arbitrary value associated with encoding
-				 * type.  Passed to conversion procedures. */
+				 * type. Passed to conversion functions. */
     int nullSize;		/* Number of zero bytes that signify
-				 * end-of-string in this encoding.  This
-				 * number is used to determine the source
-				 * string length when the srcLen argument is
-				 * negative.  Must be 1 or 2. */
-} Tcl_EncodingType;    
+				 * end-of-string in this encoding. This number
+				 * is used to determine the source string
+				 * length when the srcLen argument is
+				 * negative. Must be 1 or 2. */
+} Tcl_EncodingType;
 
 /*
  * The following definitions are used as values for the conversion control
  * flags argument when converting text from one character set to another:
  *
- * TCL_ENCODING_START:	     	Signifies that the source buffer is the first
+ * TCL_ENCODING_START -		Signifies that the source buffer is the first
  *				block in a (potentially multi-block) input
- *				stream.  Tells the conversion procedure to
- *				reset to an initial state and perform any
+ *				stream. Tells the conversion function to reset
+ *				to an initial state and perform any
  *				initialization that needs to occur before the
- *				first byte is converted.  If the source
- *				buffer contains the entire input stream to be
+ *				first byte is converted. If the source buffer
+ *				contains the entire input stream to be
  *				converted, this flag should be set.
- *
- * TCL_ENCODING_END:		Signifies that the source buffer is the last
+ * TCL_ENCODING_END -		Signifies that the source buffer is the last
  *				block in a (potentially multi-block) input
- *				stream.  Tells the conversion routine to
+ *				stream. Tells the conversion routine to
  *				perform any finalization that needs to occur
  *				after the last byte is converted and then to
- *				reset to an initial state.  If the source
+ *				reset to an initial state. If the source
  *				buffer contains the entire input stream to be
  *				converted, this flag should be set.
- *				
- * TCL_ENCODING_STOPONERROR:	If set, then the converter will return
- *				immediately upon encountering an invalid
- *				byte sequence or a source character that has
- *				no mapping in the target encoding.  If clear,
- *				then the converter will skip the problem,
- *				substituting one or more "close" characters
- *				in the destination buffer and then continue
- *				to sonvert the source.
+ * TCL_ENCODING_STOPONERROR -	If set, then the converter will return
+ *				immediately upon encountering an invalid byte
+ *				sequence or a source character that has no
+ *				mapping in the target encoding. If clear, then
+ *				the converter will skip the problem,
+ *				substituting one or more "close" characters in
+ *				the destination buffer and then continue to
+ *				convert the source.
  */
+
 #define TCL_ENCODING_START		0x01
 #define TCL_ENCODING_END		0x02
 #define TCL_ENCODING_STOPONERROR	0x04
 
 /*
- * The following data structures and declarations are for the new Tcl
- * parser.
+ * The following data structures and declarations are for the new Tcl parser.
  */
 
 /*
- * For each word of a command, and for each piece of a word such as a
- * variable reference, one of the following structures is created to
- * describe the token.
+ * For each word of a command, and for each piece of a word such as a variable
+ * reference, one of the following structures is created to describe the
+ * token.
  */
 
 typedef struct Tcl_Token {
-    int type;			/* Type of token, such as TCL_TOKEN_WORD;
-				 * see below for valid types. */
+    int type;			/* Type of token, such as TCL_TOKEN_WORD; see
+				 * below for valid types. */
     CONST char *start;		/* First character in token. */
     int size;			/* Number of bytes in token. */
-    int numComponents;		/* If this token is composed of other
-				 * tokens, this field tells how many of
-				 * them there are (including components of
-				 * components, etc.).  The component tokens
-				 * immediately follow this one. */
+    int numComponents;		/* If this token is composed of other tokens,
+				 * this field tells how many of them there are
+				 * (including components of components, etc.).
+				 * The component tokens immediately follow
+				 * this one. */
 } Tcl_Token;
 
 /*
- * Type values defined for Tcl_Token structures.  These values are
- * defined as mask bits so that it's easy to check for collections of
- * types.
+ * Type values defined for Tcl_Token structures. These values are defined as
+ * mask bits so that it's easy to check for collections of types.
  *
  * TCL_TOKEN_WORD -		The token describes one word of a command,
- *				from the first non-blank character of
- *				the word (which may be " or {) up to but
- *				not including the space, semicolon, or
- *				bracket that terminates the word. 
- *				NumComponents counts the total number of
- *				sub-tokens that make up the word.  This
- *				includes, for example, sub-tokens of
- *				TCL_TOKEN_VARIABLE tokens.
- * TCL_TOKEN_SIMPLE_WORD -	This token is just like TCL_TOKEN_WORD
- *				except that the word is guaranteed to
- *				consist of a single TCL_TOKEN_TEXT
- *				sub-token.
- * TCL_TOKEN_TEXT -		The token describes a range of literal
- *				text that is part of a word. 
- *				NumComponents is always 0.
- * TCL_TOKEN_BS -		The token describes a backslash sequence
- *				that must be collapsed.	 NumComponents
- *				is always 0.
+ *				from the first non-blank character of the word
+ *				(which may be " or {) up to but not including
+ *				the space, semicolon, or bracket that
+ *				terminates the word. NumComponents counts the
+ *				total number of sub-tokens that make up the
+ *				word. This includes, for example, sub-tokens
+ *				of TCL_TOKEN_VARIABLE tokens.
+ * TCL_TOKEN_SIMPLE_WORD -	This token is just like TCL_TOKEN_WORD except
+ *				that the word is guaranteed to consist of a
+ *				single TCL_TOKEN_TEXT sub-token.
+ * TCL_TOKEN_TEXT -		The token describes a range of literal text
+ *				that is part of a word. NumComponents is
+ *				always 0.
+ * TCL_TOKEN_BS -		The token describes a backslash sequence that
+ *				must be collapsed. NumComponents is always 0.
  * TCL_TOKEN_COMMAND -		The token describes a command whose result
- *				must be substituted into the word.  The
- *				token includes the enclosing brackets. 
- *				NumComponents is always 0.
- * TCL_TOKEN_VARIABLE -		The token describes a variable
- *				substitution, including the dollar sign,
- *				variable name, and array index (if there
- *				is one) up through the right
- *				parentheses.  NumComponents tells how
- *				many additional tokens follow to
- *				represent the variable name.  The first
- *				token will be a TCL_TOKEN_TEXT token
- *				that describes the variable name.  If
- *				the variable is an array reference then
- *				there will be one or more additional
- *				tokens, of type TCL_TOKEN_TEXT,
+ *				must be substituted into the word. The token
+ *				includes the enclosing brackets. NumComponents
+ *				is always 0.
+ * TCL_TOKEN_VARIABLE -		The token describes a variable substitution,
+ *				including the dollar sign, variable name, and
+ *				array index (if there is one) up through the
+ *				right parentheses. NumComponents tells how
+ *				many additional tokens follow to represent the
+ *				variable name. The first token will be a
+ *				TCL_TOKEN_TEXT token that describes the
+ *				variable name. If the variable is an array
+ *				reference then there will be one or more
+ *				additional tokens, of type TCL_TOKEN_TEXT,
  *				TCL_TOKEN_BS, TCL_TOKEN_COMMAND, and
- *				TCL_TOKEN_VARIABLE, that describe the
- *				array index; numComponents counts the
- *				total number of nested tokens that make
- *				up the variable reference, including
- *				sub-tokens of TCL_TOKEN_VARIABLE tokens.
- * TCL_TOKEN_SUB_EXPR -		The token describes one subexpression of a
- *				expression, from the first non-blank
- *				character of the subexpression up to but not
- *				including the space, brace, or bracket
- *				that terminates the subexpression. 
- *				NumComponents counts the total number of
- *				following subtokens that make up the
- *				subexpression; this includes all subtokens
- *				for any nested TCL_TOKEN_SUB_EXPR tokens.
- *				For example, a numeric value used as a
+ *				TCL_TOKEN_VARIABLE, that describe the array
+ *				index; numComponents counts the total number
+ *				of nested tokens that make up the variable
+ *				reference, including sub-tokens of
+ *				TCL_TOKEN_VARIABLE tokens.
+ * TCL_TOKEN_SUB_EXPR -		The token describes one subexpression of an
+ *				expression, from the first non-blank character
+ *				of the subexpression up to but not including
+ *				the space, brace, or bracket that terminates
+ *				the subexpression. NumComponents counts the
+ *				total number of following subtokens that make
+ *				up the subexpression; this includes all
+ *				subtokens for any nested TCL_TOKEN_SUB_EXPR
+ *				tokens. For example, a numeric value used as a
  *				primitive operand is described by a
  *				TCL_TOKEN_SUB_EXPR token followed by a
  *				TCL_TOKEN_TEXT token. A binary subexpression
  *				is described by a TCL_TOKEN_SUB_EXPR token
- *				followed by the	TCL_TOKEN_OPERATOR token
- *				for the operator, then TCL_TOKEN_SUB_EXPR
- *				tokens for the left then the right operands.
+ *				followed by the TCL_TOKEN_OPERATOR token for
+ *				the operator, then TCL_TOKEN_SUB_EXPR tokens
+ *				for the left then the right operands.
  * TCL_TOKEN_OPERATOR -		The token describes one expression operator.
  *				An operator might be the name of a math
  *				function such as "abs". A TCL_TOKEN_OPERATOR
  *				token is always preceeded by one
  *				TCL_TOKEN_SUB_EXPR token for the operator's
- *				subexpression, and is followed by zero or
- *				more TCL_TOKEN_SUB_EXPR tokens for the
- *				operator's operands. NumComponents is
- *				always 0.
+ *				subexpression, and is followed by zero or more
+ *				TCL_TOKEN_SUB_EXPR tokens for the operator's
+ *				operands. NumComponents is always 0.
+ * TCL_TOKEN_EXPAND_WORD -	This token is just like TCL_TOKEN_WORD except
+ *				that it marks a word that began with the
+ *				literal character prefix "{*}". This word is
+ *				marked to be expanded - that is, broken into
+ *				words after substitution is complete.
  */
+
 #define TCL_TOKEN_WORD		1
 #define TCL_TOKEN_SIMPLE_WORD	2
 #define TCL_TOKEN_TEXT		4
@@ -2123,11 +2014,11 @@ typedef struct Tcl_Token {
 #define TCL_TOKEN_VARIABLE	32
 #define TCL_TOKEN_SUB_EXPR	64
 #define TCL_TOKEN_OPERATOR	128
+#define TCL_TOKEN_EXPAND_WORD	256
 
 /*
- * Parsing error types.  On any parsing error, one of these values
- * will be stored in the error field of the Tcl_Parse structure
- * defined below.
+ * Parsing error types. On any parsing error, one of these values will be
+ * stored in the error field of the Tcl_Parse structure defined below.
  */
 
 #define TCL_PARSE_SUCCESS		0
@@ -2142,32 +2033,32 @@ typedef struct Tcl_Token {
 #define TCL_PARSE_BAD_NUMBER		9
 
 /*
- * A structure of the following type is filled in by Tcl_ParseCommand.
- * It describes a single command parsed from an input string.
+ * A structure of the following type is filled in by Tcl_ParseCommand. It
+ * describes a single command parsed from an input string.
  */
 
 #define NUM_STATIC_TOKENS 20
 
 typedef struct Tcl_Parse {
-    CONST char *commentStart;	/* Pointer to # that begins the first of
-				 * one or more comments preceding the
-				 * command. */
+    CONST char *commentStart;	/* Pointer to # that begins the first of one
+				 * or more comments preceding the command. */
     int commentSize;		/* Number of bytes in comments (up through
-				 * newline character that terminates the
-				 * last comment).  If there were no
-				 * comments, this field is 0. */
-    CONST char *commandStart;	/* First character in first word of command. */
-    int commandSize;		/* Number of bytes in command, including
-				 * first character of first word, up
-				 * through the terminating newline,
-				 * close bracket, or semicolon. */
-    int numWords;		/* Total number of words in command.  May
-				 * be 0. */
-    Tcl_Token *tokenPtr;	/* Pointer to first token representing
-				 * the words of the command.  Initially
-				 * points to staticTokens, but may change
-				 * to point to malloc-ed space if command
-				 * exceeds space in staticTokens. */
+				 * newline character that terminates the last
+				 * comment). If there were no comments, this
+				 * field is 0. */
+    CONST char *commandStart;	/* First character in first word of
+				 * command. */
+    int commandSize;		/* Number of bytes in command, including first
+				 * character of first word, up through the
+				 * terminating newline, close bracket, or
+				 * semicolon. */
+    int numWords;		/* Total number of words in command. May be
+				 * 0. */
+    Tcl_Token *tokenPtr;	/* Pointer to first token representing the
+				 * words of the command. Initially points to
+				 * staticTokens, but may change to point to
+				 * malloc-ed space if command exceeds space in
+				 * staticTokens. */
     int numTokens;		/* Total number of tokens in command. */
     int tokensAvailable;	/* Total number of tokens available at
 				 * *tokenPtr. */
@@ -2175,81 +2066,75 @@ typedef struct Tcl_Parse {
 				 * above. */
 
     /*
-     * The fields below are intended only for the private use of the
-     * parser.	They should not be used by procedures that invoke
-     * Tcl_ParseCommand.
+     * The fields below are intended only for the private use of the parser.
+     * They should not be used by functions that invoke Tcl_ParseCommand.
      */
 
     CONST char *string;		/* The original command string passed to
 				 * Tcl_ParseCommand. */
-    CONST char *end;		/* Points to the character just after the
-				 * last one in the command string. */
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting,
-				 * or NULL. */
+    CONST char *end;		/* Points to the character just after the last
+				 * one in the command string. */
+    Tcl_Interp *interp;		/* Interpreter to use for error reporting, or
+				 * NULL. */
     CONST char *term;		/* Points to character in string that
-				 * terminated most recent token.  Filled in
-				 * by ParseTokens.  If an error occurs,
-				 * points to beginning of region where the
-				 * error occurred (e.g. the open brace if
-				 * the close brace is missing). */
+				 * terminated most recent token. Filled in by
+				 * ParseTokens. If an error occurs, points to
+				 * beginning of region where the error
+				 * occurred (e.g. the open brace if the close
+				 * brace is missing). */
     int incomplete;		/* This field is set to 1 by Tcl_ParseCommand
 				 * if the command appears to be incomplete.
 				 * This information is used by
 				 * Tcl_CommandComplete. */
     Tcl_Token staticTokens[NUM_STATIC_TOKENS];
-				/* Initial space for tokens for command.
-				 * This space should be large enough to
-				 * accommodate most commands; dynamic
-				 * space is allocated for very large
-				 * commands that don't fit here. */
+				/* Initial space for tokens for command. This
+				 * space should be large enough to accommodate
+				 * most commands; dynamic space is allocated
+				 * for very large commands that don't fit
+				 * here. */
 } Tcl_Parse;
 
 /*
  * The following definitions are the error codes returned by the conversion
  * routines:
  *
- * TCL_OK:			All characters were converted.
- *
- * TCL_CONVERT_NOSPACE:		The output buffer would not have been large
+ * TCL_OK -			All characters were converted.
+ * TCL_CONVERT_NOSPACE -	The output buffer would not have been large
  *				enough for all of the converted data; as many
  *				characters as could fit were converted though.
- *
- * TCL_CONVERT_MULTIBYTE:	The last few bytes in the source string were
+ * TCL_CONVERT_MULTIBYTE -	The last few bytes in the source string were
  *				the beginning of a multibyte sequence, but
  *				more bytes were needed to complete this
- *				sequence.  A subsequent call to the conversion
+ *				sequence. A subsequent call to the conversion
  *				routine should pass the beginning of this
  *				unconverted sequence plus additional bytes
- *				from the source stream to properly convert
- *				the formerly split-up multibyte sequence.
- *
- * TCL_CONVERT_SYNTAX:		The source stream contained an invalid
- *				character sequence.  This may occur if the
+ *				from the source stream to properly convert the
+ *				formerly split-up multibyte sequence.
+ * TCL_CONVERT_SYNTAX -		The source stream contained an invalid
+ *				character sequence. This may occur if the
  *				input stream has been damaged or if the input
- *				encoding method was misidentified.  This error
+ *				encoding method was misidentified. This error
  *				is reported only if TCL_ENCODING_STOPONERROR
  *				was specified.
- *
- * TCL_CONVERT_UNKNOWN:		The source string contained a character
- *				that could not be represented in the target
- *				encoding.  This error is reported only if
+ * TCL_CONVERT_UNKNOWN -	The source string contained a character that
+ *				could not be represented in the target
+ *				encoding. This error is reported only if
  *				TCL_ENCODING_STOPONERROR was specified.
  */
 
-#define TCL_CONVERT_MULTIBYTE		-1
-#define TCL_CONVERT_SYNTAX		-2
-#define TCL_CONVERT_UNKNOWN		-3
-#define TCL_CONVERT_NOSPACE		-4
+#define TCL_CONVERT_MULTIBYTE	-1
+#define TCL_CONVERT_SYNTAX	-2
+#define TCL_CONVERT_UNKNOWN	-3
+#define TCL_CONVERT_NOSPACE	-4
 
 /*
  * The maximum number of bytes that are necessary to represent a single
- * Unicode character in UTF-8.  The valid values should be 3 or 6 (or
- * perhaps 1 if we want to support a non-unicode enabled core).
- * If 3, then Tcl_UniChar must be 2-bytes in size (UCS-2). (default)
- * If 6, then Tcl_UniChar must be 4-bytes in size (UCS-4).
- * At this time UCS-2 mode is the default and recommended mode.
- * UCS-4 is experimental and not recommended.  It works for the core,
- * but most extensions expect UCS-2.
+ * Unicode character in UTF-8. The valid values should be 3 or 6 (or perhaps 1
+ * if we want to support a non-unicode enabled core). If 3, then Tcl_UniChar
+ * must be 2-bytes in size (UCS-2) (the default). If 6, then Tcl_UniChar must
+ * be 4-bytes in size (UCS-4). At this time UCS-2 mode is the default and
+ * recommended mode. UCS-4 is experimental and not recommended. It works for
+ * the core, but most extensions expect UCS-2.
  */
 
 #ifndef TCL_UTF_MAX
@@ -2257,15 +2142,15 @@ typedef struct Tcl_Parse {
 #endif
 
 /*
- * This represents a Unicode character.  Any changes to this should
- * also be reflected in regcustom.h.
+ * This represents a Unicode character. Any changes to this should also be
+ * reflected in regcustom.h.
  */
 
 #if TCL_UTF_MAX > 4
     /*
-     * unsigned int isn't 100% accurate as it should be a strict 4-byte
-     * value (perhaps wchar_t).  64-bit systems may have troubles.  The
-     * size of this value must be reflected correctly in regcustom.h and
+     * unsigned int isn't 100% accurate as it should be a strict 4-byte value
+     * (perhaps wchar_t). 64-bit systems may have troubles. The size of this
+     * value must be reflected correctly in regcustom.h and
      * in tclEncoding.c.
      * XXX: Tcl is currently UCS-2 and planning UTF-16 for the Unicode
      * XXX: string rep that Tcl_UniChar represents.  Changing the size
@@ -2276,39 +2161,62 @@ typedef unsigned int Tcl_UniChar;
 typedef unsigned short Tcl_UniChar;
 #endif
 
+/*
+ * TIP #59: The following structure is used in calls 'Tcl_RegisterConfig' to
+ * provide the system with the embedded configuration data.
+ */
+
+typedef struct Tcl_Config {
+    CONST char *key;		/* Configuration key to register. ASCII
+				 * encoded, thus UTF-8. */
+    CONST char *value;		/* The value associated with the key. System
+				 * encoding. */
+} Tcl_Config;
 
 /*
- * These function have been renamed. The old names are deprecated, but we
- * define these macros for backwards compatibilty.
+ * Flags for TIP#143 limits, detailing which limits are active in an
+ * interpreter. Used for Tcl_{Add,Remove}LimitHandler type argument.
  */
-#define Tcl_Ckalloc Tcl_Alloc
-#define Tcl_Ckfree Tcl_Free
-#define Tcl_Ckrealloc Tcl_Realloc
-#define Tcl_Return Tcl_SetResult
-#define Tcl_TildeSubst Tcl_TranslateFileName
-#define panic Tcl_Panic
-#define panicVA Tcl_PanicVA
+
+#define TCL_LIMIT_COMMANDS	0x01
+#define TCL_LIMIT_TIME		0x02
 
 /*
- * The following constant is used to test for older versions of Tcl
- * in the stubs tables.
+ * Structure containing information about a limit handler to be called when a
+ * command- or time-limit is exceeded by an interpreter.
+ */
+
+typedef void (Tcl_LimitHandlerProc) _ANSI_ARGS_((ClientData clientData,
+	Tcl_Interp *interp));
+typedef void (Tcl_LimitHandlerDeleteProc) _ANSI_ARGS_((ClientData clientData));
+
+typedef struct mp_int mp_int;
+#define MP_INT_DECLARED
+typedef unsigned int mp_digit;
+#define MP_DIGIT_DECLARED
+
+/*
+ * The following constant is used to test for older versions of Tcl in the
+ * stubs tables.
  *
  * Jan Nijtman's plus patch uses 0xFCA1BACF, so we need to pick a different
  * value since the stubs tables don't match.
  */
 
-#define TCL_STUB_MAGIC ((int)0xFCA3BACF)
+#define TCL_STUB_MAGIC		((int) 0xFCA3BACF)
 
 /*
  * The following function is required to be defined in all stubs aware
- * extensions.  The function is actually implemented in the stub
- * library, not the main Tcl library, although there is a trivial
- * implementation in the main library in case an extension is statically
- * linked into an application.
+ * extensions. The function is actually implemented in the stub library, not
+ * the main Tcl library, although there is a trivial implementation in the
+ * main library in case an extension is statically linked into an application.
  */
 
 EXTERN CONST char *	Tcl_InitStubs _ANSI_ARGS_((Tcl_Interp *interp,
 			    CONST char *version, int exact));
+EXTERN CONST char *	TclTomMathInitializeStubs _ANSI_ARGS_((
+			    Tcl_Interp *interp, CONST char *version,
+			    int epoch, int revision));
 
 #ifndef USE_TCL_STUBS
 
@@ -2317,36 +2225,205 @@ EXTERN CONST char *	Tcl_InitStubs _ANSI_ARGS_((Tcl_Interp *interp,
  */
 
 #define Tcl_InitStubs(interp, version, exact) \
-    Tcl_PkgRequire(interp, "Tcl", version, exact)
+    Tcl_PkgInitStubsCheck(interp, version, exact)
 
 #endif
 
+    /*
+     * TODO - tommath stubs export goes here!
+     */
+
+
+/*
+ * Public functions that are not accessible via the stubs table.
+ * Tcl_GetMemoryInfo is needed for AOLserver. [Bug 1868171]
+ */
+
+EXTERN void		Tcl_Main _ANSI_ARGS_((int argc, char **argv,
+			    Tcl_AppInitProc *appInitProc));
+EXTERN CONST char *	Tcl_PkgInitStubsCheck _ANSI_ARGS_((Tcl_Interp *interp,
+			    CONST char *version, int exact));
+#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
+EXTERN void		Tcl_GetMemoryInfo _ANSI_ARGS_((Tcl_DString *dsPtr));
+#endif
 
 /*
- * Include the public function declarations that are accessible via
- * the stubs table.
+ * Include the public function declarations that are accessible via the stubs
+ * table.
  */
 
 #include "tclDecls.h"
 
 /*
- * Include platform specific public function declarations that are
- * accessible via the stubs table.
+ * Include platform specific public function declarations that are accessible
+ * via the stubs table.
  */
 
 #include "tclPlatDecls.h"
 
 /*
- * Public functions that are not accessible via the stubs table.
+ * The following declarations either map ckalloc and ckfree to malloc and
+ * free, or they map them to functions with all sorts of debugging hooks
+ * defined in tclCkalloc.c.
+ */
+
+#ifdef TCL_MEM_DEBUG
+
+#   define ckalloc(x) Tcl_DbCkalloc(x, __FILE__, __LINE__)
+#   define ckfree(x)  Tcl_DbCkfree(x, __FILE__, __LINE__)
+#   define ckrealloc(x,y) Tcl_DbCkrealloc((x), (y),__FILE__, __LINE__)
+#   define attemptckalloc(x) Tcl_AttemptDbCkalloc(x, __FILE__, __LINE__)
+#   define attemptckrealloc(x,y) Tcl_AttemptDbCkrealloc((x), (y), __FILE__, __LINE__)
+
+#else /* !TCL_MEM_DEBUG */
+
+/*
+ * If we are not using the debugging allocator, we should call the Tcl_Alloc,
+ * et al. routines in order to guarantee that every module is using the same
+ * memory allocator both inside and outside of the Tcl library.
  */
 
-EXTERN void Tcl_Main _ANSI_ARGS_((int argc, char **argv,
-	Tcl_AppInitProc *appInitProc));
+#   define ckalloc(x) Tcl_Alloc(x)
+#   define ckfree(x) Tcl_Free(x)
+#   define ckrealloc(x,y) Tcl_Realloc(x,y)
+#   define attemptckalloc(x) Tcl_AttemptAlloc(x)
+#   define attemptckrealloc(x,y) Tcl_AttemptRealloc(x,y)
+#   undef  Tcl_InitMemory
+#   define Tcl_InitMemory(x)
+#   undef  Tcl_DumpActiveMemory
+#   define Tcl_DumpActiveMemory(x)
+#   undef  Tcl_ValidateAllMemory
+#   define Tcl_ValidateAllMemory(x,y)
+
+#endif /* !TCL_MEM_DEBUG */
+
+#ifdef TCL_MEM_DEBUG
+#   define Tcl_IncrRefCount(objPtr) \
+	Tcl_DbIncrRefCount(objPtr, __FILE__, __LINE__)
+#   define Tcl_DecrRefCount(objPtr) \
+	Tcl_DbDecrRefCount(objPtr, __FILE__, __LINE__)
+#   define Tcl_IsShared(objPtr) \
+	Tcl_DbIsShared(objPtr, __FILE__, __LINE__)
+#else
+#   define Tcl_IncrRefCount(objPtr) \
+	++(objPtr)->refCount
+    /*
+     * Use do/while0 idiom for optimum correctness without compiler warnings.
+     * http://c2.com/cgi/wiki?TrivialDoWhileLoop
+     */
+#   define Tcl_DecrRefCount(objPtr) \
+	do { \
+	    Tcl_Obj *_objPtr = (objPtr); \
+	    if (--(_objPtr)->refCount <= 0) { \
+		TclFreeObj(_objPtr); \
+	    } \
+	} while(0)
+#   define Tcl_IsShared(objPtr) \
+	((objPtr)->refCount > 1)
+#endif
+
+/*
+ * Macros and definitions that help to debug the use of Tcl objects. When
+ * TCL_MEM_DEBUG is defined, the Tcl_New declarations are overridden to call
+ * debugging versions of the object creation functions.
+ */
+
+#ifdef TCL_MEM_DEBUG
+#  undef  Tcl_NewBignumObj
+#  define Tcl_NewBignumObj(val) \
+     Tcl_DbNewBignumObj(val, __FILE__, __LINE__)
+#  undef  Tcl_NewBooleanObj
+#  define Tcl_NewBooleanObj(val) \
+     Tcl_DbNewBooleanObj(val, __FILE__, __LINE__)
+#  undef  Tcl_NewByteArrayObj
+#  define Tcl_NewByteArrayObj(bytes, len) \
+     Tcl_DbNewByteArrayObj(bytes, len, __FILE__, __LINE__)
+#  undef  Tcl_NewDoubleObj
+#  define Tcl_NewDoubleObj(val) \
+     Tcl_DbNewDoubleObj(val, __FILE__, __LINE__)
+#  undef  Tcl_NewIntObj
+#  define Tcl_NewIntObj(val) \
+     Tcl_DbNewLongObj(val, __FILE__, __LINE__)
+#  undef  Tcl_NewListObj
+#  define Tcl_NewListObj(objc, objv) \
+     Tcl_DbNewListObj(objc, objv, __FILE__, __LINE__)
+#  undef  Tcl_NewLongObj
+#  define Tcl_NewLongObj(val) \
+     Tcl_DbNewLongObj(val, __FILE__, __LINE__)
+#  undef  Tcl_NewObj
+#  define Tcl_NewObj() \
+     Tcl_DbNewObj(__FILE__, __LINE__)
+#  undef  Tcl_NewStringObj
+#  define Tcl_NewStringObj(bytes, len) \
+     Tcl_DbNewStringObj(bytes, len, __FILE__, __LINE__)
+#  undef  Tcl_NewWideIntObj
+#  define Tcl_NewWideIntObj(val) \
+     Tcl_DbNewWideIntObj(val, __FILE__, __LINE__)
+#endif /* TCL_MEM_DEBUG */
+
+/*
+ * Macros for clients to use to access fields of hash entries:
+ */
+
+#define Tcl_GetHashValue(h) ((h)->clientData)
+#define Tcl_SetHashValue(h, value) ((h)->clientData = (ClientData) (value))
+#define Tcl_GetHashKey(tablePtr, h) \
+	((char *) (((tablePtr)->keyType == TCL_ONE_WORD_KEYS || \
+		    (tablePtr)->keyType == TCL_CUSTOM_PTR_KEYS) \
+		   ? (h)->key.oneWordValue \
+		   : (h)->key.string))
+
+/*
+ * Macros to use for clients to use to invoke find and create functions for
+ * hash tables:
+ */
+
+#undef  Tcl_FindHashEntry
+#define Tcl_FindHashEntry(tablePtr, key) \
+	(*((tablePtr)->findProc))(tablePtr, key)
+#undef  Tcl_CreateHashEntry
+#define Tcl_CreateHashEntry(tablePtr, key, newPtr) \
+	(*((tablePtr)->createProc))(tablePtr, key, newPtr)
+
+/*
+ * Macros that eliminate the overhead of the thread synchronization functions
+ * when compiling without thread support.
+ */
+
+#ifndef TCL_THREADS
+#undef  Tcl_MutexLock
+#define Tcl_MutexLock(mutexPtr)
+#undef  Tcl_MutexUnlock
+#define Tcl_MutexUnlock(mutexPtr)
+#undef  Tcl_MutexFinalize
+#define Tcl_MutexFinalize(mutexPtr)
+#undef  Tcl_ConditionNotify
+#define Tcl_ConditionNotify(condPtr)
+#undef  Tcl_ConditionWait
+#define Tcl_ConditionWait(condPtr, mutexPtr, timePtr)
+#undef  Tcl_ConditionFinalize
+#define Tcl_ConditionFinalize(condPtr)
+#endif /* TCL_THREADS */
+
+#ifndef TCL_NO_DEPRECATED
+    /*
+     * These function have been renamed. The old names are deprecated, but we
+     * define these macros for backwards compatibilty.
+     */
+
+#   define Tcl_Ckalloc		Tcl_Alloc
+#   define Tcl_Ckfree		Tcl_Free
+#   define Tcl_Ckrealloc	Tcl_Realloc
+#   define Tcl_Return		Tcl_SetResult
+#   define Tcl_TildeSubst	Tcl_TranslateFileName
+#   define panic		Tcl_Panic
+#   define panicVA		Tcl_PanicVA
+#endif
 
 /*
- * Convenience declaration of Tcl_AppInit for backwards compatibility.
- * This function is not *implemented* by the tcl library, so the storage
- * class is neither DLLEXPORT nor DLLIMPORT
+ * Convenience declaration of Tcl_AppInit for backwards compatibility. This
+ * function is not *implemented* by the tcl library, so the storage class is
+ * neither DLLEXPORT nor DLLIMPORT.
  */
 
 #undef TCL_STORAGE_CLASS
diff --git a/generic/tclAlloc.c b/generic/tclAlloc.c
index 5967201..8d0a2cc 100644
--- a/generic/tclAlloc.c
+++ b/generic/tclAlloc.c
@@ -1,10 +1,10 @@
-/* 
+/*
  * tclAlloc.c --
  *
- *	This is a very fast storage allocator.  It allocates blocks of a
- *	small number of different sizes, and keeps free lists of each size.
- *	Blocks that don't exactly fit are passed up to the next larger size.
- *	Blocks over a certain size are directly allocated from the system.
+ *	This is a very fast storage allocator. It allocates blocks of a small
+ *	number of different sizes, and keeps free lists of each size. Blocks
+ *	that don't exactly fit are passed up to the next larger size. Blocks
+ *	over a certain size are directly allocated from the system.
  *
  * Copyright (c) 1983 Regents of the University of California.
  * Copyright (c) 1996-1997 Sun Microsystems, Inc.
@@ -12,8 +12,8 @@
  *
  * Portions contributed by Chris Kingsley, Jack Jansen and Ray Johnson.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 /*
@@ -21,66 +21,55 @@
  * that has significantly reduced lock contention.
  */
 
-#if !defined(TCL_THREADS) || !defined(USE_THREAD_ALLOC) || defined(TCL_MEM_DEBUG)
-
 #include "tclInt.h"
-#include "tclPort.h"
+#if !defined(TCL_THREADS) || !defined(USE_THREAD_ALLOC)
 
 #if USE_TCLALLOC
 
 /*
- * We should really make use of AC_CHECK_TYPE(caddr_t)
- * here, but it can wait until Tcl uses config.h properly.
+ * We should really make use of AC_CHECK_TYPE(caddr_t) here, but it can wait
+ * until Tcl uses config.h properly.
  */
+
 #if defined(_MSC_VER) || defined(__MINGW32__) || defined(__BORLANDC__)
 typedef unsigned long caddr_t;
 #endif
 
 /*
- * Alignment for allocated memory.
- */
-
-#if defined(__APPLE__)
-#define ALLOCALIGN	16
-#else
-#define ALLOCALIGN	8
-#endif
-
-/*
- * The overhead on a block is at least 8 bytes.  When free, this space
- * contains a pointer to the next free block, and the bottom two bits must
- * be zero.  When in use, the first byte is set to MAGIC, and the second
- * byte is the size index.  The remaining bytes are for alignment.
- * If range checking is enabled then a second word holds the size of the
- * requested block, less 1, rounded up to a multiple of sizeof(RMAGIC).
- * The order of elements is critical: ov_magic must overlay the low order
- * bits of ov_next, and ov_magic can not be a valid ov_next bit pattern.
+ * The overhead on a block is at least 8 bytes. When free, this space contains
+ * a pointer to the next free block, and the bottom two bits must be zero.
+ * When in use, the first byte is set to MAGIC, and the second byte is the
+ * size index. The remaining bytes are for alignment. If range checking is
+ * enabled then a second word holds the size of the requested block, less 1,
+ * rounded up to a multiple of sizeof(RMAGIC). The order of elements is
+ * critical: ov.magic must overlay the low order bits of ov.next, and ov.magic
+ * can not be a valid ov.next bit pattern.
  */
 
 union overhead {
-    union overhead *ov_next;		/* when free */
-    unsigned char ov_padding[ALLOCALIGN];/* align struct to ALLOCALIGN bytes */
+    union overhead *next;		/* when free */
+    unsigned char padding[TCL_ALLOCALIGN];	/* align struct to TCL_ALLOCALIGN bytes */
     struct {
-	unsigned char	ovu_magic0;	/* magic number */
-	unsigned char	ovu_index;	/* bucket # */
-	unsigned char	ovu_unused;	/* unused */
-	unsigned char	ovu_magic1;	/* other magic number */
+	unsigned char magic0;		/* magic number */
+	unsigned char index;		/* bucket # */
+	unsigned char unused;		/* unused */
+	unsigned char magic1;		/* other magic number */
 #ifndef NDEBUG
-	unsigned short	ovu_rmagic;	/* range magic number */
-	unsigned long	ovu_size;	/* actual block size */
-	unsigned short  ovu_unused2;    /* padding to 8-byte align */
+	unsigned short rmagic;		/* range magic number */
+	unsigned long size;		/* actual block size */
+	unsigned short unused2;		/* padding to 8-byte align */
 #endif
     } ovu;
-#define ov_magic0	ovu.ovu_magic0
-#define ov_magic1	ovu.ovu_magic1
-#define ov_index	ovu.ovu_index
-#define ov_rmagic	ovu.ovu_rmagic
-#define ov_size		ovu.ovu_size
+#define overMagic0	ovu.magic0
+#define overMagic1	ovu.magic1
+#define bucketIndex	ovu.index
+#define rangeCheckMagic	ovu.rmagic
+#define realBlockSize	ovu.size
 };
 
 
-#define MAGIC		0xef		/* magic # on accounting info */
-#define RMAGIC		0x5555		/* magic # on range info */
+#define MAGIC		0xef	/* magic # on accounting info */
+#define RMAGIC		0x5555	/* magic # on range info */
 
 #ifndef NDEBUG
 #define	RSLOP		sizeof (unsigned short)
@@ -91,38 +80,45 @@ union overhead {
 #define OVERHEAD (sizeof(union overhead) + RSLOP)
 
 /*
- * nextf[i] is the pointer to the next free block of size 2^(i+3).  The
+ * Macro to make it easier to refer to the end-of-block guard magic.
+ */
+
+#define BLOCK_END(overPtr) \
+    (*(unsigned short *)((caddr_t)((overPtr) + 1) + (overPtr)->realBlockSize))
+
+/*
+ * nextf[i] is the pointer to the next free block of size 2^(i+3). The
  * smallest allocatable block is MINBLOCK bytes. The overhead information
  * precedes the data area returned to the user.
  */
 
-#define MINBLOCK	((sizeof(union overhead) + (ALLOCALIGN-1)) & ~(ALLOCALIGN-1))
+#define MINBLOCK	((sizeof(union overhead) + (TCL_ALLOCALIGN-1)) & ~(TCL_ALLOCALIGN-1))
 #define NBUCKETS	(13 - (MINBLOCK >> 4))
 #define MAXMALLOC	(1<<(NBUCKETS+2))
-static	union overhead *nextf[NBUCKETS];
+static union overhead *nextf[NBUCKETS];
 
-/* 
- * The following structure is used to keep track of all system memory 
- * currently owned by Tcl.  When finalizing, all this memory will
- * be returned to the system.
+/*
+ * The following structure is used to keep track of all system memory
+ * currently owned by Tcl. When finalizing, all this memory will be returned
+ * to the system.
  */
 
 struct block {
     struct block *nextPtr;	/* Linked list. */
-    struct block *prevPtr;	/* Linked list for big blocks, ensures 8-byte 
+    struct block *prevPtr;	/* Linked list for big blocks, ensures 8-byte
 				 * alignment for suballocated blocks. */
 };
 
-static struct block *blockList;		/* Tracks the suballocated blocks. */
-static struct block bigBlocks = {	/* Big blocks aren't suballocated. */
+static struct block *blockList;	/* Tracks the suballocated blocks. */
+static struct block bigBlocks={	/* Big blocks aren't suballocated. */
     &bigBlocks, &bigBlocks
 };
 
 /*
- * The allocator is protected by a special mutex that must be
- * explicitly initialized.  Futhermore, because Tcl_Alloc may be
- * used before anything else in Tcl, we make this module self-initializing
- * after all with the allocInit variable.
+ * The allocator is protected by a special mutex that must be explicitly
+ * initialized. Futhermore, because Tcl_Alloc may be used before anything else
+ * in Tcl, we make this module self-initializing after all with the allocInit
+ * variable.
  */
 
 #ifdef TCL_THREADS
@@ -130,21 +126,20 @@ static Tcl_Mutex *allocMutexPtr;
 #endif
 static int allocInit = 0;
 
-
 #ifdef MSTATS
 
 /*
- * nmalloc[i] is the difference between the number of mallocs and frees
- * for a given block size.
+ * numMallocs[i] is the difference between the number of mallocs and frees for
+ * a given block size.
  */
 
-static	unsigned int nmalloc[NBUCKETS+1];
+static	unsigned int numMallocs[NBUCKETS+1];
 #include <stdio.h>
 #endif
 
 #if !defined(NDEBUG)
-#define	ASSERT(p)   if (!(p)) panic(# p)
-#define RANGE_ASSERT(p) if (!(p)) panic(# p)
+#define	ASSERT(p)	if (!(p)) Tcl_Panic(# p)
+#define RANGE_ASSERT(p) if (!(p)) Tcl_Panic(# p)
 #else
 #define	ASSERT(p)
 #define RANGE_ASSERT(p)
@@ -154,8 +149,7 @@ static	unsigned int nmalloc[NBUCKETS+1];
  * Prototypes for functions used only in this file.
  */
 
-static void 		MoreCore _ANSI_ARGS_((int bucket));
-
+static void 		MoreCore(int bucket);
 
 /*
  *-------------------------------------------------------------------------
@@ -174,7 +168,7 @@ static void 		MoreCore _ANSI_ARGS_((int bucket));
  */
 
 void
-TclInitAlloc()
+TclInitAlloc(void)
 {
     if (!allocInit) {
 	allocInit = 1;
@@ -189,27 +183,26 @@ TclInitAlloc()
  *
  * TclFinalizeAllocSubsystem --
  *
- *	Release all resources being used by this subsystem, including 
- *	aggressively freeing all memory allocated by TclpAlloc() that 
- *	has not yet been released with TclpFree().
- *	
- *	After this function is called, all memory allocated with 
- *	TclpAlloc() should be considered unusable.
+ *	Release all resources being used by this subsystem, including
+ *	aggressively freeing all memory allocated by TclpAlloc() that has not
+ *	yet been released with TclpFree().
+ *
+ *	After this function is called, all memory allocated with TclpAlloc()
+ *	should be considered unusable.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	This subsystem is self-initializing, since memory can be 
- *	allocated before Tcl is formally initialized.  After this call,
- *	this subsystem has been reset to its initial state and is 
- *	usable again.
+ *	This subsystem is self-initializing, since memory can be allocated
+ *	before Tcl is formally initialized. After this call, this subsystem
+ *	has been reset to its initial state and is usable again.
  *
  *-------------------------------------------------------------------------
  */
 
 void
-TclFinalizeAllocSubsystem()
+TclFinalizeAllocSubsystem(void)
 {
     unsigned int i;
     struct block *blockPtr, *nextPtr;
@@ -229,14 +222,14 @@ TclFinalizeAllocSubsystem()
     bigBlocks.nextPtr = &bigBlocks;
     bigBlocks.prevPtr = &bigBlocks;
 
-    for (i = 0; i < NBUCKETS; i++) {
+    for (i=0 ; i<NBUCKETS ; i++) {
 	nextf[i] = NULL;
 #ifdef MSTATS
-	nmalloc[i] = 0;
+	numMallocs[i] = 0;
 #endif
     }
 #ifdef MSTATS
-    nmalloc[i] = 0;
+    numMallocs[i] = 0;
 #endif
     Tcl_MutexUnlock(allocMutexPtr);
 }
@@ -258,30 +251,32 @@ TclFinalizeAllocSubsystem()
  */
 
 char *
-TclpAlloc(nbytes)
-    unsigned int nbytes;	/* Number of bytes to allocate. */
+TclpAlloc(
+    unsigned int numBytes)	/* Number of bytes to allocate. */
 {
-    register union overhead *op;
+    register union overhead *overPtr;
     register long bucket;
-    register unsigned amt;
+    register unsigned amount;
     struct block *bigBlockPtr = NULL;
 
     if (!allocInit) {
 	/*
-	 * We have to make the "self initializing" because Tcl_Alloc
-	 * may be used before any other part of Tcl.  E.g., see
-	 * main() for tclsh!
+	 * We have to make the "self initializing" because Tcl_Alloc may be
+	 * used before any other part of Tcl. E.g., see main() for tclsh!
 	 */
+
 	TclInitAlloc();
     }
     Tcl_MutexLock(allocMutexPtr);
+
     /*
-     * First the simple case: we simple allocate big blocks directly
+     * First the simple case: we simple allocate big blocks directly.
      */
-    if (nbytes >= MAXMALLOC - OVERHEAD) {
-	if (nbytes <= UINT_MAX - OVERHEAD - sizeof(struct block)) {
-	    bigBlockPtr = (struct block *) TclpSysAlloc((unsigned) 
-		    (sizeof(struct block) + OVERHEAD + nbytes), 0);
+
+    if (numBytes >= MAXMALLOC - OVERHEAD) {
+	if (numBytes <= UINT_MAX - OVERHEAD -sizeof(struct block)) {
+	    bigBlockPtr = (struct block *) TclpSysAlloc((unsigned)
+		    (sizeof(struct block) + OVERHEAD + numBytes), 0);
 	}
 	if (bigBlockPtr == NULL) {
 	    Tcl_MutexUnlock(allocMutexPtr);
@@ -292,74 +287,83 @@ TclpAlloc(nbytes)
 	bigBlockPtr->prevPtr = &bigBlocks;
 	bigBlockPtr->nextPtr->prevPtr = bigBlockPtr;
 
-	op = (union overhead *) (bigBlockPtr + 1);
-	op->ov_magic0 = op->ov_magic1 = MAGIC;
-	op->ov_index = 0xff;
+	overPtr = (union overhead *) (bigBlockPtr + 1);
+	overPtr->overMagic0 = overPtr->overMagic1 = MAGIC;
+	overPtr->bucketIndex = 0xff;
 #ifdef MSTATS
-	nmalloc[NBUCKETS]++;
+	numMallocs[NBUCKETS]++;
 #endif
+
 #ifndef NDEBUG
 	/*
-	 * Record allocated size of block and
-	 * bound space with magic numbers.
+	 * Record allocated size of block and bound space with magic numbers.
 	 */
-	op->ov_size = (nbytes + RSLOP - 1) & ~(RSLOP - 1);
-	op->ov_rmagic = RMAGIC;
-	*(unsigned short *)((caddr_t)(op + 1) + op->ov_size) = RMAGIC;
+
+	overPtr->realBlockSize = (numBytes + RSLOP - 1) & ~(RSLOP - 1);
+	overPtr->rangeCheckMagic = RMAGIC;
+	BLOCK_END(overPtr) = RMAGIC;
 #endif
+
 	Tcl_MutexUnlock(allocMutexPtr);
-	return (void *)(op+1);
+	return (void *)(overPtr+1);
     }
+
     /*
-     * Convert amount of memory requested into closest block size
-     * stored in hash buckets which satisfies request.
-     * Account for space used per block for accounting.
+     * Convert amount of memory requested into closest block size stored in
+     * hash buckets which satisfies request. Account for space used per block
+     * for accounting.
      */
 
-    amt = MINBLOCK;		/* size of first bucket */
+    amount = MINBLOCK;		/* size of first bucket */
     bucket = MINBLOCK >> 4;
 
-    while (nbytes + OVERHEAD > amt) {
-	amt <<= 1;
-	if (amt == 0) {
+    while (numBytes + OVERHEAD > amount) {
+	amount <<= 1;
+	if (amount == 0) {
 	    Tcl_MutexUnlock(allocMutexPtr);
-	    return (NULL);
+	    return NULL;
 	}
 	bucket++;
     }
-    ASSERT( bucket < NBUCKETS );
+    ASSERT(bucket < NBUCKETS);
 
     /*
-     * If nothing in hash bucket right now,
-     * request more memory from the system.
+     * If nothing in hash bucket right now, request more memory from the
+     * system.
      */
-    if ((op = nextf[bucket]) == NULL) {
+
+    if ((overPtr = nextf[bucket]) == NULL) {
 	MoreCore(bucket);
-	if ((op = nextf[bucket]) == NULL) {
+	if ((overPtr = nextf[bucket]) == NULL) {
 	    Tcl_MutexUnlock(allocMutexPtr);
-	    return (NULL);
+	    return NULL;
 	}
     }
+
     /*
      * Remove from linked list
      */
-    nextf[bucket] = op->ov_next;
-    op->ov_magic0 = op->ov_magic1 = MAGIC;
-    op->ov_index = (unsigned char) bucket;
+
+    nextf[bucket] = overPtr->next;
+    overPtr->overMagic0 = overPtr->overMagic1 = MAGIC;
+    overPtr->bucketIndex = (unsigned char) bucket;
+
 #ifdef MSTATS
-    nmalloc[bucket]++;
+    numMallocs[bucket]++;
 #endif
+
 #ifndef NDEBUG
     /*
-     * Record allocated size of block and
-     * bound space with magic numbers.
+     * Record allocated size of block and bound space with magic numbers.
      */
-    op->ov_size = (nbytes + RSLOP - 1) & ~(RSLOP - 1);
-    op->ov_rmagic = RMAGIC;
-    *(unsigned short *)((caddr_t)(op + 1) + op->ov_size) = RMAGIC;
+
+    overPtr->realBlockSize = (numBytes + RSLOP - 1) & ~(RSLOP - 1);
+    overPtr->rangeCheckMagic = RMAGIC;
+    BLOCK_END(overPtr) = RMAGIC;
 #endif
+
     Tcl_MutexUnlock(allocMutexPtr);
-    return ((char *)(op + 1));
+    return ((char *)(overPtr + 1));
 }
 
 /*
@@ -381,28 +385,29 @@ TclpAlloc(nbytes)
  */
 
 static void
-MoreCore(bucket)
-    int bucket;		/* What bucket to allocat to. */
+MoreCore(
+    int bucket)			/* What bucket to allocat to. */
 {
-    register union overhead *op;
-    register long sz;		/* size of desired block */
-    long amt;			/* amount to allocate */
-    int nblks;			/* how many blocks we get */
+    register union overhead *overPtr;
+    register long size;		/* size of desired block */
+    long amount;		/* amount to allocate */
+    int numBlocks;		/* how many blocks we get */
     struct block *blockPtr;
 
     /*
-     * sbrk_size <= 0 only for big, FLUFFY, requests (about
-     * 2^30 bytes on a VAX, I think) or for a negative arg.
+     * sbrk_size <= 0 only for big, FLUFFY, requests (about 2^30 bytes on a
+     * VAX, I think) or for a negative arg.
      */
-    sz = 1 << (bucket + 3);
-    ASSERT(sz > 0);
 
-    amt = MAXMALLOC;
-    nblks = amt / sz;
-    ASSERT(nblks*sz == amt);
+    size = 1 << (bucket + 3);
+    ASSERT(size > 0);
 
-    blockPtr = (struct block *) TclpSysAlloc((unsigned) 
-	    (sizeof(struct block) + amt), 1);
+    amount = MAXMALLOC;
+    numBlocks = amount / size;
+    ASSERT(numBlocks*size == amount);
+
+    blockPtr = (struct block *) TclpSysAlloc((unsigned)
+	    (sizeof(struct block) + amount), 1);
     /* no more room! */
     if (blockPtr == NULL) {
 	return;
@@ -410,18 +415,18 @@ MoreCore(bucket)
     blockPtr->nextPtr = blockList;
     blockList = blockPtr;
 
-    op = (union overhead *) (blockPtr + 1);
-    
+    overPtr = (union overhead *) (blockPtr + 1);
+
     /*
-     * Add new memory allocated to that on
-     * free list for this hash bucket.
+     * Add new memory allocated to that on free list for this hash bucket.
      */
-    nextf[bucket] = op;
-    while (--nblks > 0) {
-	op->ov_next = (union overhead *)((caddr_t)op + sz);
-	op = (union overhead *)((caddr_t)op + sz);
+
+    nextf[bucket] = overPtr;
+    while (--numBlocks > 0) {
+	overPtr->next = (union overhead *)((caddr_t)overPtr + size);
+	overPtr = (union overhead *)((caddr_t)overPtr + size);
     }
-    op->ov_next = (union overhead *)NULL;
+    overPtr->next = NULL;
 }
 
 /*
@@ -441,47 +446,51 @@ MoreCore(bucket)
  */
 
 void
-TclpFree(cp)
-    char *cp;		/* Pointer to memory to free. */
-{   
+TclpFree(
+    char *oldPtr)		/* Pointer to memory to free. */
+{
     register long size;
-    register union overhead *op;
+    register union overhead *overPtr;
     struct block *bigBlockPtr;
 
-    if (cp == NULL) {
+    if (oldPtr == NULL) {
 	return;
     }
 
     Tcl_MutexLock(allocMutexPtr);
-    op = (union overhead *)((caddr_t)cp - sizeof (union overhead));
+    overPtr = (union overhead *)((caddr_t)oldPtr - sizeof (union overhead));
 
-    ASSERT(op->ov_magic0 == MAGIC);		/* make sure it was in use */
-    ASSERT(op->ov_magic1 == MAGIC);
-    if (op->ov_magic0 != MAGIC || op->ov_magic1 != MAGIC) {
+    ASSERT(overPtr->overMagic0 == MAGIC);	/* make sure it was in use */
+    ASSERT(overPtr->overMagic1 == MAGIC);
+    if (overPtr->overMagic0 != MAGIC || overPtr->overMagic1 != MAGIC) {
 	Tcl_MutexUnlock(allocMutexPtr);
 	return;
     }
 
-    RANGE_ASSERT(op->ov_rmagic == RMAGIC);
-    RANGE_ASSERT(*(unsigned short *)((caddr_t)(op + 1) + op->ov_size) == RMAGIC);
-    size = op->ov_index;
-    if ( size == 0xff ) {
+    RANGE_ASSERT(overPtr->rangeCheckMagic == RMAGIC);
+    RANGE_ASSERT(BLOCK_END(overPtr) == RMAGIC);
+    size = overPtr->bucketIndex;
+    if (size == 0xff) {
 #ifdef MSTATS
-	nmalloc[NBUCKETS]--;
+	numMallocs[NBUCKETS]--;
 #endif
-	bigBlockPtr = (struct block *) op - 1;
+
+	bigBlockPtr = (struct block *) overPtr - 1;
 	bigBlockPtr->prevPtr->nextPtr = bigBlockPtr->nextPtr;
 	bigBlockPtr->nextPtr->prevPtr = bigBlockPtr->prevPtr;
 	TclpSysFree(bigBlockPtr);
+
 	Tcl_MutexUnlock(allocMutexPtr);
 	return;
     }
     ASSERT(size < NBUCKETS);
-    op->ov_next = nextf[size];	/* also clobbers ov_magic */
-    nextf[size] = op;
+    overPtr->next = nextf[size];	/* also clobbers overMagic */
+    nextf[size] = overPtr;
+
 #ifdef MSTATS
-    nmalloc[size]--;
+    numMallocs[size]--;
 #endif
+
     Tcl_MutexUnlock(allocMutexPtr);
 }
 
@@ -502,34 +511,34 @@ TclpFree(cp)
  */
 
 char *
-TclpRealloc(cp, nbytes)
-    char *cp;			/* Pointer to alloced block. */
-    unsigned int nbytes;	/* New size of memory. */
-{   
+TclpRealloc(
+    char *oldPtr,		/* Pointer to alloced block. */
+    unsigned int numBytes)	/* New size of memory. */
+{
     int i;
-    union overhead *op;
+    union overhead *overPtr;
     struct block *bigBlockPtr;
     int expensive;
-    unsigned long maxsize;
+    unsigned long maxSize;
 
-    if (cp == NULL) {
-	return (TclpAlloc(nbytes));
+    if (oldPtr == NULL) {
+	return TclpAlloc(numBytes);
     }
 
     Tcl_MutexLock(allocMutexPtr);
 
-    op = (union overhead *)((caddr_t)cp - sizeof (union overhead));
+    overPtr = (union overhead *)((caddr_t)oldPtr - sizeof (union overhead));
 
-    ASSERT(op->ov_magic0 == MAGIC);		/* make sure it was in use */
-    ASSERT(op->ov_magic1 == MAGIC);
-    if (op->ov_magic0 != MAGIC || op->ov_magic1 != MAGIC) {
+    ASSERT(overPtr->overMagic0 == MAGIC);	/* make sure it was in use */
+    ASSERT(overPtr->overMagic1 == MAGIC);
+    if (overPtr->overMagic0 != MAGIC || overPtr->overMagic1 != MAGIC) {
 	Tcl_MutexUnlock(allocMutexPtr);
 	return NULL;
     }
 
-    RANGE_ASSERT(op->ov_rmagic == RMAGIC);
-    RANGE_ASSERT(*(unsigned short *)((caddr_t)(op + 1) + op->ov_size) == RMAGIC);
-    i = op->ov_index;
+    RANGE_ASSERT(overPtr->rangeCheckMagic == RMAGIC);
+    RANGE_ASSERT(BLOCK_END(overPtr) == RMAGIC);
+    i = overPtr->bucketIndex;
 
     /*
      * If the block isn't in a bin, just realloc it.
@@ -537,11 +546,11 @@ TclpRealloc(cp, nbytes)
 
     if (i == 0xff) {
 	struct block *prevPtr, *nextPtr;
-	bigBlockPtr = (struct block *) op - 1;
+	bigBlockPtr = (struct block *) overPtr - 1;
 	prevPtr = bigBlockPtr->prevPtr;
 	nextPtr = bigBlockPtr->nextPtr;
-	bigBlockPtr = (struct block *) TclpSysRealloc(bigBlockPtr, 
-		sizeof(struct block) + OVERHEAD + nbytes);
+	bigBlockPtr = (struct block *) TclpSysRealloc(bigBlockPtr,
+		sizeof(struct block) + OVERHEAD + numBytes);
 	if (bigBlockPtr == NULL) {
 	    Tcl_MutexUnlock(allocMutexPtr);
 	    return NULL;
@@ -549,63 +558,69 @@ TclpRealloc(cp, nbytes)
 
 	if (prevPtr->nextPtr != bigBlockPtr) {
 	    /*
-	     * If the block has moved, splice the new block into the list where
-	     * the old block used to be. 
+	     * If the block has moved, splice the new block into the list
+	     * where the old block used to be.
 	     */
 
 	    prevPtr->nextPtr = bigBlockPtr;
 	    nextPtr->prevPtr = bigBlockPtr;
 	}
 
-	op = (union overhead *) (bigBlockPtr + 1);
+	overPtr = (union overhead *) (bigBlockPtr + 1);
+
 #ifdef MSTATS
-	nmalloc[NBUCKETS]++;
+	numMallocs[NBUCKETS]++;
 #endif
+
 #ifndef NDEBUG
 	/*
 	 * Record allocated size of block and update magic number bounds.
 	 */
 
-	op->ov_size = (nbytes + RSLOP - 1) & ~(RSLOP - 1);
-	*(unsigned short *)((caddr_t)(op + 1) + op->ov_size) = RMAGIC;
+	overPtr->realBlockSize = (numBytes + RSLOP - 1) & ~(RSLOP - 1);
+	BLOCK_END(overPtr) = RMAGIC;
 #endif
+
 	Tcl_MutexUnlock(allocMutexPtr);
-	return (char *)(op+1);
+	return (char *)(overPtr+1);
     }
-    maxsize = 1 << (i+3);
+    maxSize = 1 << (i+3);
     expensive = 0;
-    if ( nbytes + OVERHEAD > maxsize ) {
+    if (numBytes+OVERHEAD > maxSize) {
 	expensive = 1;
-    } else if ( i > 0 && nbytes + OVERHEAD < (maxsize/2) ) {
+    } else if (i>0 && numBytes+OVERHEAD < maxSize/2) {
 	expensive = 1;
     }
 
     if (expensive) {
-	void *newp;
+	void *newPtr;
 
 	Tcl_MutexUnlock(allocMutexPtr);
 
-	newp = TclpAlloc(nbytes);
-	if ( newp == NULL ) {
+	newPtr = TclpAlloc(numBytes);
+	if (newPtr == NULL) {
 	    return NULL;
 	}
-	maxsize -= OVERHEAD;
-	if ( maxsize < nbytes )
-	    nbytes = maxsize;
-	memcpy((VOID *) newp, (VOID *) cp, (size_t) nbytes);
-	TclpFree(cp);
-	return newp;
+	maxSize -= OVERHEAD;
+	if (maxSize < numBytes) {
+	    numBytes = maxSize;
+	}
+	memcpy(newPtr, oldPtr, (size_t) numBytes);
+	TclpFree(oldPtr);
+	return newPtr;
     }
-    
+
     /*
      * Ok, we don't have to copy, it fits as-is
      */
+
 #ifndef NDEBUG
-    op->ov_size = (nbytes + RSLOP - 1) & ~(RSLOP - 1);
-    *(unsigned short *)((caddr_t)(op + 1) + op->ov_size) = RMAGIC;
+    overPtr->realBlockSize = (numBytes + RSLOP - 1) & ~(RSLOP - 1);
+    BLOCK_END(overPtr) = RMAGIC;
 #endif
+
     Tcl_MutexUnlock(allocMutexPtr);
-    return(cp);
+    return(oldPtr);
 }
 
 /*
@@ -613,9 +628,9 @@ TclpRealloc(cp, nbytes)
  *
  * mstats --
  *
- *	Prints two lines of numbers, one showing the length of the 
- *	free list for each size category, the second showing the 
- *	number of mallocs - frees for each size category.
+ *	Prints two lines of numbers, one showing the length of the free list
+ *	for each size category, the second showing the number of mallocs -
+ *	frees for each size category.
  *
  * Results:
  *	None.
@@ -628,35 +643,39 @@ TclpRealloc(cp, nbytes)
 
 #ifdef MSTATS
 void
-mstats(s)
-    char *s;	/* Where to write info. */
+mstats(
+    char *s)			/* Where to write info. */
 {
     register int i, j;
-    register union overhead *p;
-    int totfree = 0,
-	totused = 0;
+    register union overhead *overPtr;
+    int totalFree = 0, totalUsed = 0;
 
     Tcl_MutexLock(allocMutexPtr);
+
     fprintf(stderr, "Memory allocation statistics %s\nTclpFree:\t", s);
     for (i = 0; i < NBUCKETS; i++) {
-	for (j = 0, p = nextf[i]; p; p = p->ov_next, j++)
+	for (j=0, overPtr=nextf[i]; overPtr; overPtr=overPtr->next, j++) {
 	    fprintf(stderr, " %d", j);
-	totfree += j * (1 << (i + 3));
+	}
+	totalFree += j * (1 << (i + 3));
     }
+
     fprintf(stderr, "\nused:\t");
     for (i = 0; i < NBUCKETS; i++) {
-	fprintf(stderr, " %d", nmalloc[i]);
-	totused += nmalloc[i] * (1 << (i + 3));
+	fprintf(stderr, " %d", numMallocs[i]);
+	totalUsed += numMallocs[i] * (1 << (i + 3));
     }
+
     fprintf(stderr, "\n\tTotal small in use: %d, total free: %d\n",
-	    totused, totfree);
-    fprintf(stderr, "\n\tNumber of big (>%d) blocks in use: %d\n", 
-	    MAXMALLOC, nmalloc[NBUCKETS]);
+	    totalUsed, totalFree);
+    fprintf(stderr, "\n\tNumber of big (>%d) blocks in use: %d\n",
+	    MAXMALLOC, numMallocs[NBUCKETS]);
+
     Tcl_MutexUnlock(allocMutexPtr);
 }
 #endif
 
-#else  /* !USE_TCLALLOC */
+#else	/* !USE_TCLALLOC */
 
 /*
  *----------------------------------------------------------------------
@@ -675,10 +694,10 @@ mstats(s)
  */
 
 char *
-TclpAlloc(nbytes)
-    unsigned int nbytes;	/* Number of bytes to allocate. */
+TclpAlloc(
+    unsigned int numBytes)	/* Number of bytes to allocate. */
 {
-    return (char*) malloc(nbytes);
+    return (char*) malloc(numBytes);
 }
 
 /*
@@ -698,10 +717,10 @@ TclpAlloc(nbytes)
  */
 
 void
-TclpFree(cp)
-    char *cp;		/* Pointer to memory to free. */
-{   
-    free(cp);
+TclpFree(
+    char *oldPtr)		/* Pointer to memory to free. */
+{
+    free(oldPtr);
     return;
 }
 
@@ -722,12 +741,20 @@ TclpFree(cp)
  */
 
 char *
-TclpRealloc(cp, nbytes)
-    char *cp;			/* Pointer to alloced block. */
-    unsigned int nbytes;	/* New size of memory. */
-{   
-    return (char*) realloc(cp, nbytes);
+TclpRealloc(
+    char *oldPtr,		/* Pointer to alloced block. */
+    unsigned int numBytes)	/* New size of memory. */
+{
+    return (char*) realloc(oldPtr, numBytes);
 }
 
 #endif /* !USE_TCLALLOC */
 #endif /* !TCL_THREADS */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclAsync.c b/generic/tclAsync.c
index 98087c5..ca18f5e 100644
--- a/generic/tclAsync.c
+++ b/generic/tclAsync.c
@@ -1,91 +1,78 @@
-/* 
+/*
  * tclAsync.c --
  *
- *	This file provides low-level support needed to invoke signal
- *	handlers in a safe way.  The code here doesn't actually handle
- *	signals, though.  This code is based on proposals made by
- *	Mark Diekhans and Don Libes.
+ *	This file provides low-level support needed to invoke signal handlers
+ *	in a safe way. The code here doesn't actually handle signals, though.
+ *	This code is based on proposals made by Mark Diekhans and Don Libes.
  *
  * Copyright (c) 1993 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /* Forward declaration */
 struct ThreadSpecificData;
 
 /*
- * One of the following structures exists for each asynchronous
- * handler:
+ * One of the following structures exists for each asynchronous handler:
  */
 
 typedef struct AsyncHandler {
-    int ready;				/* Non-zero means this handler should
-					 * be invoked in the next call to
-					 * Tcl_AsyncInvoke. */
-    struct AsyncHandler *nextPtr;	/* Next in list of all handlers for
-					 * the process. */
-    Tcl_AsyncProc *proc;		/* Procedure to call when handler
-					 * is invoked. */
-    ClientData clientData;		/* Value to pass to handler when it
-					 * is invoked. */
+    int ready;			/* Non-zero means this handler should be
+				 * invoked in the next call to
+				 * Tcl_AsyncInvoke. */
+    struct AsyncHandler *nextPtr;
+				/* Next in list of all handlers for the
+				 * process. */
+    Tcl_AsyncProc *proc;	/* Procedure to call when handler is
+				 * invoked. */
+    ClientData clientData;	/* Value to pass to handler when it is
+				 * invoked. */
     struct ThreadSpecificData *originTsd;
-					/* Used in Tcl_AsyncMark to modify thread-
-					 * specific data from outside the thread
-					 * it is associated to. */
-    Tcl_ThreadId originThrdId;		/* Origin thread where this token was
-					 * created and where it will be
-					 * yielded. */
+				/* Used in Tcl_AsyncMark to modify thread-
+				 * specific data from outside the thread it is
+				 * associated to. */
+    Tcl_ThreadId originThrdId;	/* Origin thread where this token was created
+				 * and where it will be yielded. */
 } AsyncHandler;
 
-
 typedef struct ThreadSpecificData {
     /*
-     * The variables below maintain a list of all existing handlers
-     * specific to the calling thread.
-     */
-    AsyncHandler *firstHandler;	    /* First handler defined for process,
-				     * or NULL if none. */
-    AsyncHandler *lastHandler;	    /* Last handler or NULL. */
-
-    /*
-     * The variable below is set to 1 whenever a handler becomes ready and
-     * it is cleared to zero whenever Tcl_AsyncInvoke is called.  It can be
-     * checked elsewhere in the application by calling Tcl_AsyncReady to see
-     * if Tcl_AsyncInvoke should be invoked.
+     * The variables below maintain a list of all existing handlers specific
+     * to the calling thread.
      */
-
-    int asyncReady;
-
-    /*
-     * The variable below indicates whether Tcl_AsyncInvoke is currently
-     * working.  If so then we won't set asyncReady again until
-     * Tcl_AsyncInvoke returns.
-     */
-
-    int asyncActive;
-
-    Tcl_Mutex asyncMutex;   /* Thread-specific AsyncHandler linked-list lock */
-
+    AsyncHandler *firstHandler;	/* First handler defined for process, or NULL
+				 * if none. */
+    AsyncHandler *lastHandler;	/* Last handler or NULL. */
+    int asyncReady;		/* This is set to 1 whenever a handler becomes
+				 * ready and it is cleared to zero whenever
+				 * Tcl_AsyncInvoke is called. It can be
+				 * checked elsewhere in the application by
+				 * calling Tcl_AsyncReady to see if
+				 * Tcl_AsyncInvoke should be invoked. */
+    int asyncActive;		/* Indicates whether Tcl_AsyncInvoke is
+				 * currently working. If so then we won't set
+				 * asyncReady again until Tcl_AsyncInvoke
+				 * returns. */
+    Tcl_Mutex asyncMutex;	/* Thread-specific AsyncHandler linked-list
+				 * lock */
 } ThreadSpecificData;
 static Tcl_ThreadDataKey dataKey;
-
 
 /*
  *----------------------------------------------------------------------
  *
  * TclFinalizeAsync --
  *
- *	Finalizes the mutex in the thread local data structure for the
- *	async subsystem.
+ *	Finalizes the mutex in the thread local data structure for the async
+ *	subsystem.
  *
  * Results:
- *	None.	
+ *	None.
  *
  * Side effects:
  *	Forgets knowledge of the mutex should it have been created.
@@ -94,7 +81,7 @@ static Tcl_ThreadDataKey dataKey;
  */
 
 void
-TclFinalizeAsync()
+TclFinalizeAsync(void)
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
@@ -109,12 +96,12 @@ TclFinalizeAsync()
  * Tcl_AsyncCreate --
  *
  *	This procedure creates the data structures for an asynchronous
- *	handler, so that no memory has to be allocated when the handler
- *	is activated.
+ *	handler, so that no memory has to be allocated when the handler is
+ *	activated.
  *
  * Results:
- *	The return value is a token for the handler, which can be used
- *	to activate it later on.
+ *	The return value is a token for the handler, which can be used to
+ *	activate it later on.
  *
  * Side effects:
  *	Information about the handler is recorded.
@@ -123,10 +110,10 @@ TclFinalizeAsync()
  */
 
 Tcl_AsyncHandler
-Tcl_AsyncCreate(proc, clientData)
-    Tcl_AsyncProc *proc;		/* Procedure to call when handler
-					 * is invoked. */
-    ClientData clientData;		/* Argument to pass to handler. */
+Tcl_AsyncCreate(
+    Tcl_AsyncProc *proc,	/* Procedure to call when handler is
+				 * invoked. */
+    ClientData clientData)	/* Argument to pass to handler. */
 {
     AsyncHandler *asyncPtr;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -155,10 +142,10 @@ Tcl_AsyncCreate(proc, clientData)
  *
  * Tcl_AsyncMark --
  *
- *	This procedure is called to request that an asynchronous handler
- *	be invoked as soon as possible.  It's typically called from
- *	an interrupt handler, where it isn't safe to do anything that
- *	depends on or modifies application state.
+ *	This procedure is called to request that an asynchronous handler be
+ *	invoked as soon as possible. It's typically called from an interrupt
+ *	handler, where it isn't safe to do anything that depends on or
+ *	modifies application state.
  *
  * Results:
  *	None.
@@ -170,8 +157,8 @@ Tcl_AsyncCreate(proc, clientData)
  */
 
 void
-Tcl_AsyncMark(async)
-    Tcl_AsyncHandler async;		/* Token for handler. */
+Tcl_AsyncMark(
+    Tcl_AsyncHandler async)		/* Token for handler. */
 {
     AsyncHandler *token = (AsyncHandler *) async;
 
@@ -189,13 +176,12 @@ Tcl_AsyncMark(async)
  *
  * Tcl_AsyncInvoke --
  *
- *	This procedure is called at a "safe" time at background level
- *	to invoke any active asynchronous handlers.
+ *	This procedure is called at a "safe" time at background level to
+ *	invoke any active asynchronous handlers.
  *
  * Results:
- *	The return value is a normal Tcl result, which is intended to
- *	replace the code argument as the current completion code for
- *	interp.
+ *	The return value is a normal Tcl result, which is intended to replace
+ *	the code argument as the current completion code for interp.
  *
  * Side effects:
  *	Depends on the handlers that are active.
@@ -204,14 +190,13 @@ Tcl_AsyncMark(async)
  */
 
 int
-Tcl_AsyncInvoke(interp, code)
-    Tcl_Interp *interp;			/* If invoked from Tcl_Eval just after
-					 * completing a command, points to
-					 * interpreter.  Otherwise it is
-					 * NULL. */
-    int code; 				/* If interp is non-NULL, this gives
-					 * completion code from command that
-					 * just completed. */
+Tcl_AsyncInvoke(
+    Tcl_Interp *interp,		/* If invoked from Tcl_Eval just after
+				 * completing a command, points to
+				 * interpreter. Otherwise it is NULL. */
+    int code)			/* If interp is non-NULL, this gives
+				 * completion code from command that just
+				 * completed. */
 {
     AsyncHandler *asyncPtr;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -229,13 +214,12 @@ Tcl_AsyncInvoke(interp, code)
     }
 
     /*
-     * Make one or more passes over the list of handlers, invoking
-     * at most one handler in each pass.  After invoking a handler,
-     * go back to the start of the list again so that (a) if a new
-     * higher-priority handler gets marked while executing a lower
-     * priority handler, we execute the higher-priority handler
-     * next, and (b) if a handler gets deleted during the execution
-     * of a handler, then the list structure may change so it isn't
+     * Make one or more passes over the list of handlers, invoking at most one
+     * handler in each pass. After invoking a handler, go back to the start of
+     * the list again so that (a) if a new higher-priority handler gets marked
+     * while executing a lower priority handler, we execute the higher-
+     * priority handler next, and (b) if a handler gets deleted during the
+     * execution of a handler, then the list structure may change so it isn't
      * safe to continue down the list anyway.
      */
 
@@ -264,8 +248,8 @@ Tcl_AsyncInvoke(interp, code)
  *
  * Tcl_AsyncDelete --
  *
- *	Frees up all the state for an asynchronous handler.  The handler
- *	should never be used again.
+ *	Frees up all the state for an asynchronous handler. The handler should
+ *	never be used again.
  *
  * Results:
  *	None.
@@ -284,8 +268,8 @@ Tcl_AsyncInvoke(interp, code)
  */
 
 void
-Tcl_AsyncDelete(async)
-    Tcl_AsyncHandler async;		/* Token for handler to delete. */
+Tcl_AsyncDelete(
+    Tcl_AsyncHandler async)		/* Token for handler to delete. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     AsyncHandler *asyncPtr = (AsyncHandler *) async;
@@ -296,7 +280,7 @@ Tcl_AsyncDelete(async)
      */
 
     if (asyncPtr->originThrdId != Tcl_GetCurrentThread()) {
-	panic("Tcl_AsyncDelete: async handler deleted by the wrong thread");
+	Tcl_Panic("Tcl_AsyncDelete: async handler deleted by the wrong thread");
     }
 
     /*
@@ -314,7 +298,7 @@ Tcl_AsyncDelete(async)
 	    thisPtr = thisPtr->nextPtr;
 	}
 	if (thisPtr == NULL) {
-	    panic("Tcl_AsyncDelete: cannot find async handler");
+	    Tcl_Panic("Tcl_AsyncDelete: cannot find async handler");
 	}
 	if (asyncPtr == tsdPtr->firstHandler) {
 	    tsdPtr->firstHandler = asyncPtr->nextPtr;
@@ -334,13 +318,13 @@ Tcl_AsyncDelete(async)
  *
  * Tcl_AsyncReady --
  *
- *	This procedure can be used to tell whether Tcl_AsyncInvoke
- *	needs to be called.  This procedure is the external interface
- *	for checking the thread-specific asyncReady variable.
+ *	This procedure can be used to tell whether Tcl_AsyncInvoke needs to be
+ *	called. This procedure is the external interface for checking the
+ *	thread-specific asyncReady variable.
  *
  * Results:
- * 	The return value is 1 whenever a handler is ready and is 0
- *	when no handlers are ready.
+ *	The return value is 1 whenever a handler is ready and is 0 when no
+ *	handlers are ready.
  *
  * Side effects:
  *	None.
@@ -349,8 +333,23 @@ Tcl_AsyncDelete(async)
  */
 
 int
-Tcl_AsyncReady()
+Tcl_AsyncReady(void)
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     return tsdPtr->asyncReady;
 }
+
+int *
+TclGetAsyncReadyPtr(void)
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    return &(tsdPtr->asyncReady);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index 134deac..5779ca5 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -1,9 +1,9 @@
-/* 
+/*
  * tclBasic.c --
  *
  *	Contains the basic facilities for TCL command interpretation,
- *	including interpreter creation and deletion, command creation
- *	and deletion, and command/script execution. 
+ *	including interpreter creation and deletion, command creation and
+ *	deletion, and command/script execution.
  *
  * Copyright (c) 1987-1994 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
@@ -11,256 +11,353 @@
  * Copyright (c) 2001, 2002 by Kevin B. Kenny.  All rights reserved.
  * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 #include "tclCompile.h"
-#ifndef TCL_GENERIC_ONLY
-#   include "tclPort.h"
-#endif
+#include <float.h>
+#include <limits.h>
+#include <math.h>
+#include "tommath.h"
 
 /*
- * Static procedures in this file:
+ * Determine whether we're using IEEE floating point
  */
 
-static char *		CallCommandTraces _ANSI_ARGS_((Interp *iPtr, 
-			    Command *cmdPtr, CONST char *oldName, 
-			    CONST char* newName, int flags));
-static void		DeleteInterpProc _ANSI_ARGS_((Tcl_Interp *interp));
-static void		ProcessUnexpectedResult _ANSI_ARGS_((
-			    Tcl_Interp *interp, int returnCode));
-static int	        StringTraceProc _ANSI_ARGS_((ClientData clientData,
-						     Tcl_Interp* interp,
-						     int level,
-						     CONST char* command,
-						    Tcl_Command commandInfo,
-						    int objc,
-						    Tcl_Obj *CONST objv[]));
-static void           StringTraceDeleteProc _ANSI_ARGS_((ClientData clientData));
-
-#ifdef TCL_TIP280
-/* TIP #280 - Modified token based evaluation, with line information */
-static int            EvalEx _ANSI_ARGS_((Tcl_Interp *interp, CONST char *script,
-					  int numBytes, int flags, int line,
-					  int* clNextOuter, CONST char* outerScript));
-
-static int            EvalTokensStandard _ANSI_ARGS_((Tcl_Interp *interp,
-						      Tcl_Token *tokenPtr,
-						      int count, int line,
-						      int* clNextOuter, CONST char* outerScript));
+#if (FLT_RADIX == 2) && (DBL_MANT_DIG == 53) && (DBL_MAX_EXP == 1024)
+#   define IEEE_FLOATING_POINT
+/* Largest odd integer that can be represented exactly in a double */
+#   define MAX_EXACT 9007199254740991.0
 #endif
 
+/*
+ * The following structure defines the client data for a math function
+ * registered with Tcl_CreateMathFunc
+ */
+
+typedef struct OldMathFuncData {
+    Tcl_MathProc *proc;		/* Handler function */
+    int numArgs;		/* Number of args expected */
+    Tcl_ValueType *argTypes;	/* Types of the args */
+    ClientData clientData;	/* Client data for the handler function */
+} OldMathFuncData;
+
+/*
+ * Static functions in this file:
+ */
+
+static char *	CallCommandTraces(Interp *iPtr, Command *cmdPtr,
+		    const char *oldName, const char *newName, int flags);
+static int	CheckDoubleResult(Tcl_Interp *interp, double dResult);
+static void	DeleteInterpProc(Tcl_Interp *interp);
+static void	DeleteOpCmdClientData(ClientData clientData);
+static Tcl_Obj *GetCommandSource(Interp *iPtr, const char *command,
+	            int numChars, int objc, Tcl_Obj *const objv[]);
+static void	ProcessUnexpectedResult(Tcl_Interp *interp, int returnCode);
+static int	OldMathFuncProc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static void	OldMathFuncDeleteProc(ClientData clientData);
+static int	ExprAbsFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprBinaryFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprBoolFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprCeilFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprDoubleFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprEntierFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprFloorFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprIntFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprIsqrtFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprRandFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprRoundFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprSqrtFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprSrandFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprUnaryFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static int	ExprWideFunc(ClientData clientData, Tcl_Interp *interp,
+		    int argc, Tcl_Obj *const *objv);
+static void	MathFuncWrongNumArgs(Tcl_Interp *interp, int expected,
+		    int actual, Tcl_Obj *const *objv);
 #ifdef USE_DTRACE
 static int	DTraceObjCmd(ClientData dummy, Tcl_Interp *interp, int objc,
-		    Tcl_Obj *CONST objv[]);
+		    Tcl_Obj *const objv[]);
 #endif
 
 extern TclStubs tclStubs;
 
 /*
- * The following structure defines the commands in the Tcl core.
+ * The following structure define the commands in the Tcl core.
  */
 
 typedef struct {
-    CONST char *name;		/* Name of object-based command. */
-    Tcl_CmdProc *proc;		/* String-based procedure for command. */
-    Tcl_ObjCmdProc *objProc;	/* Object-based procedure for command. */
-    CompileProc *compileProc;	/* Procedure called to compile command. */
-    int isSafe;			/* If non-zero, command will be present
-                                 * in safe interpreter. Otherwise it will
-                                 * be hidden. */
+    const char *name;		/* Name of object-based command. */
+    Tcl_ObjCmdProc *objProc;	/* Object-based function for command. */
+    CompileProc *compileProc;	/* Function called to compile command. */
+    int isSafe;			/* If non-zero, command will be present in
+				 * safe interpreter. Otherwise it will be
+				 * hidden. */
 } CmdInfo;
 
 /*
- * The built-in commands, and the procedures that implement them:
+ * The built-in commands, and the functions that implement them:
  */
 
-static CONST CmdInfo builtInCmds[] = {
-    /*
-     * Commands in the generic core. Note that at least one of the proc or
-     * objProc members should be non-NULL. This avoids infinitely recursive
-     * calls between TclInvokeObjectCommand and TclInvokeStringCommand if a
-     * command name is computed at runtime and results in the name of a
-     * compiled command.
-     */
-
-    {"append",		(Tcl_CmdProc *) NULL,	Tcl_AppendObjCmd,
-	TclCompileAppendCmd,		1},
-    {"array",		(Tcl_CmdProc *) NULL,	Tcl_ArrayObjCmd,
-        (CompileProc *) NULL,		1},
-    {"binary",		(Tcl_CmdProc *) NULL,	Tcl_BinaryObjCmd,
-        (CompileProc *) NULL,		1},
-    {"break",		(Tcl_CmdProc *) NULL,	Tcl_BreakObjCmd,
-        TclCompileBreakCmd,		1},
-    {"case",		(Tcl_CmdProc *) NULL,	Tcl_CaseObjCmd,
-        (CompileProc *) NULL,		1},
-    {"catch",		(Tcl_CmdProc *) NULL,	Tcl_CatchObjCmd,	
-        TclCompileCatchCmd,		1},
-    {"clock",		(Tcl_CmdProc *) NULL,	Tcl_ClockObjCmd,
-        (CompileProc *) NULL,		1},
-    {"concat",		(Tcl_CmdProc *) NULL,	Tcl_ConcatObjCmd,
-        (CompileProc *) NULL,		1},
-    {"continue",	(Tcl_CmdProc *) NULL,	Tcl_ContinueObjCmd,
-        TclCompileContinueCmd,		1},
-    {"encoding",	(Tcl_CmdProc *) NULL,	Tcl_EncodingObjCmd,
-        (CompileProc *) NULL,		0},
-    {"error",		(Tcl_CmdProc *) NULL,	Tcl_ErrorObjCmd,
-        (CompileProc *) NULL,		1},
-    {"eval",		(Tcl_CmdProc *) NULL,	Tcl_EvalObjCmd,
-        (CompileProc *) NULL,		1},
-    {"exit",		(Tcl_CmdProc *) NULL,	Tcl_ExitObjCmd,
-        (CompileProc *) NULL,		0},
-    {"expr",		(Tcl_CmdProc *) NULL,	Tcl_ExprObjCmd,
-        TclCompileExprCmd,		1},
-    {"fcopy",		(Tcl_CmdProc *) NULL,	Tcl_FcopyObjCmd,
-        (CompileProc *) NULL,		1},
-    {"fileevent",	(Tcl_CmdProc *) NULL,	Tcl_FileEventObjCmd,
-        (CompileProc *) NULL,		1},
-    {"for",		(Tcl_CmdProc *) NULL,	Tcl_ForObjCmd,
-        TclCompileForCmd,		1},
-    {"foreach",		(Tcl_CmdProc *) NULL,	Tcl_ForeachObjCmd,
-        TclCompileForeachCmd,		1},
-    {"format",		(Tcl_CmdProc *) NULL,	Tcl_FormatObjCmd,
-        (CompileProc *) NULL,		1},
-    {"global",		(Tcl_CmdProc *) NULL,	Tcl_GlobalObjCmd,
-        (CompileProc *) NULL,		1},
-    {"if",		(Tcl_CmdProc *) NULL,	Tcl_IfObjCmd,
-        TclCompileIfCmd,		1},
-    {"incr",		(Tcl_CmdProc *) NULL,	Tcl_IncrObjCmd,
-        TclCompileIncrCmd,		1},
-    {"info",		(Tcl_CmdProc *) NULL,	Tcl_InfoObjCmd,
-        (CompileProc *) NULL,		1},
-    {"join",		(Tcl_CmdProc *) NULL,	Tcl_JoinObjCmd,
-        (CompileProc *) NULL,		1},
-    {"lappend",		(Tcl_CmdProc *) NULL,	Tcl_LappendObjCmd,
-        TclCompileLappendCmd,		1},
-    {"lindex",		(Tcl_CmdProc *) NULL,	Tcl_LindexObjCmd,
-        TclCompileLindexCmd,		1},
-    {"linsert",		(Tcl_CmdProc *) NULL,	Tcl_LinsertObjCmd,
-        (CompileProc *) NULL,		1},
-    {"list",		(Tcl_CmdProc *) NULL,	Tcl_ListObjCmd,
-        TclCompileListCmd,		1},
-    {"llength",		(Tcl_CmdProc *) NULL,	Tcl_LlengthObjCmd,
-        TclCompileLlengthCmd,		1},
-    {"load",		(Tcl_CmdProc *) NULL,	Tcl_LoadObjCmd,
-        (CompileProc *) NULL,		0},
-    {"lrange",		(Tcl_CmdProc *) NULL,	Tcl_LrangeObjCmd,
-        (CompileProc *) NULL,		1},
-    {"lreplace",	(Tcl_CmdProc *) NULL,	Tcl_LreplaceObjCmd,
-        (CompileProc *) NULL,		1},
-    {"lsearch",		(Tcl_CmdProc *) NULL,	Tcl_LsearchObjCmd,
-        (CompileProc *) NULL,		1},
-    {"lset",            (Tcl_CmdProc *) NULL,   Tcl_LsetObjCmd,
-        TclCompileLsetCmd,           	1},
-    {"lsort",		(Tcl_CmdProc *) NULL,	Tcl_LsortObjCmd,
-        (CompileProc *) NULL,		1},
-    {"namespace",	(Tcl_CmdProc *) NULL,	Tcl_NamespaceObjCmd,
-        (CompileProc *) NULL,		1},
-    {"package",		(Tcl_CmdProc *) NULL,	Tcl_PackageObjCmd,
-        (CompileProc *) NULL,		1},
-    {"proc",		(Tcl_CmdProc *) NULL,	Tcl_ProcObjCmd,	
-        (CompileProc *) NULL,		1},
-    {"regexp",		(Tcl_CmdProc *) NULL,	Tcl_RegexpObjCmd,
-        TclCompileRegexpCmd,		1},
-    {"regsub",		(Tcl_CmdProc *) NULL,	Tcl_RegsubObjCmd,
-        (CompileProc *) NULL,		1},
-    {"rename",		(Tcl_CmdProc *) NULL,	Tcl_RenameObjCmd,
-        (CompileProc *) NULL,		1},
-    {"return",		(Tcl_CmdProc *) NULL,	Tcl_ReturnObjCmd,	
-        TclCompileReturnCmd,		1},
-    {"scan",		(Tcl_CmdProc *) NULL,	Tcl_ScanObjCmd,
-        (CompileProc *) NULL,		1},
-    {"set",		(Tcl_CmdProc *) NULL,	Tcl_SetObjCmd,
-        TclCompileSetCmd,		1},
-    {"split",		(Tcl_CmdProc *) NULL,	Tcl_SplitObjCmd,
-        (CompileProc *) NULL,		1},
-    {"string",		(Tcl_CmdProc *) NULL,	Tcl_StringObjCmd,
-        TclCompileStringCmd,		1},
-    {"subst",		(Tcl_CmdProc *) NULL,	Tcl_SubstObjCmd,
-        (CompileProc *) NULL,		1},
-    {"switch",		(Tcl_CmdProc *) NULL,	Tcl_SwitchObjCmd,	
-        (CompileProc *) NULL,		1},
-    {"trace",		(Tcl_CmdProc *) NULL,	Tcl_TraceObjCmd,
-        (CompileProc *) NULL,		1},
-    {"unset",		(Tcl_CmdProc *) NULL,	Tcl_UnsetObjCmd,	
-        (CompileProc *) NULL,		1},
-    {"uplevel",		(Tcl_CmdProc *) NULL,	Tcl_UplevelObjCmd,	
-        (CompileProc *) NULL,		1},
-    {"upvar",		(Tcl_CmdProc *) NULL,	Tcl_UpvarObjCmd,	
-        (CompileProc *) NULL,		1},
-    {"variable",	(Tcl_CmdProc *) NULL,	Tcl_VariableObjCmd,
-        (CompileProc *) NULL,		1},
-    {"while",		(Tcl_CmdProc *) NULL,	Tcl_WhileObjCmd,
-        TclCompileWhileCmd,		1},
-
-    /*
-     * Commands in the UNIX core:
-     */
-
-#ifndef TCL_GENERIC_ONLY
-    {"after",		(Tcl_CmdProc *) NULL,	Tcl_AfterObjCmd,
-        (CompileProc *) NULL,		1},
-    {"cd",		(Tcl_CmdProc *) NULL,	Tcl_CdObjCmd,
-        (CompileProc *) NULL,		0},
-    {"close",		(Tcl_CmdProc *) NULL,	Tcl_CloseObjCmd,
-        (CompileProc *) NULL,		1},
-    {"eof",		(Tcl_CmdProc *) NULL,	Tcl_EofObjCmd,
-        (CompileProc *) NULL,		1},
-    {"fblocked",	(Tcl_CmdProc *) NULL,	Tcl_FblockedObjCmd,
-        (CompileProc *) NULL,		1},
-    {"fconfigure",	(Tcl_CmdProc *) NULL,	Tcl_FconfigureObjCmd,
-        (CompileProc *) NULL,		0},
-    {"file",		(Tcl_CmdProc *) NULL,	Tcl_FileObjCmd,
-        (CompileProc *) NULL,		0},
-    {"flush",		(Tcl_CmdProc *) NULL,	Tcl_FlushObjCmd,
-        (CompileProc *) NULL,		1},
-    {"gets",		(Tcl_CmdProc *) NULL,	Tcl_GetsObjCmd,
-        (CompileProc *) NULL,		1},
-    {"glob",		(Tcl_CmdProc *) NULL,	Tcl_GlobObjCmd,
-        (CompileProc *) NULL,		0},
-    {"open",		(Tcl_CmdProc *) NULL,	Tcl_OpenObjCmd,
-        (CompileProc *) NULL,		0},
-    {"pid",		(Tcl_CmdProc *) NULL,	Tcl_PidObjCmd,
-        (CompileProc *) NULL,		1},
-    {"puts",		(Tcl_CmdProc *) NULL,	Tcl_PutsObjCmd,
-        (CompileProc *) NULL,		1},
-    {"pwd",		(Tcl_CmdProc *) NULL,	Tcl_PwdObjCmd,
-        (CompileProc *) NULL,		0},
-    {"read",		(Tcl_CmdProc *) NULL,	Tcl_ReadObjCmd,
-        (CompileProc *) NULL,		1},
-    {"seek",		(Tcl_CmdProc *) NULL,	Tcl_SeekObjCmd,
-        (CompileProc *) NULL,		1},
-    {"socket",		(Tcl_CmdProc *) NULL,	Tcl_SocketObjCmd,
-        (CompileProc *) NULL,		0},
-    {"tell",		(Tcl_CmdProc *) NULL,	Tcl_TellObjCmd,
-        (CompileProc *) NULL,		1},
-    {"time",		(Tcl_CmdProc *) NULL,	Tcl_TimeObjCmd,
-        (CompileProc *) NULL,		1},
-    {"update",		(Tcl_CmdProc *) NULL,	Tcl_UpdateObjCmd,
-        (CompileProc *) NULL,		1},
-    {"vwait",		(Tcl_CmdProc *) NULL,	Tcl_VwaitObjCmd,
-        (CompileProc *) NULL,		1},
-    {"exec",		(Tcl_CmdProc *) NULL,	Tcl_ExecObjCmd,
-        (CompileProc *) NULL,		0},
-    {"source",		(Tcl_CmdProc *) NULL,	Tcl_SourceObjCmd,
-        (CompileProc *) NULL,		0},
-    
-#endif /* TCL_GENERIC_ONLY */
-    {NULL,		(Tcl_CmdProc *) NULL,	(Tcl_ObjCmdProc *) NULL,
-        (CompileProc *) NULL,		0}
+static const CmdInfo builtInCmds[] = {
+    /*
+     * Commands in the generic core.
+     */
+
+    {"append",		Tcl_AppendObjCmd,	TclCompileAppendCmd,	1},
+    {"apply",		Tcl_ApplyObjCmd,	NULL,			1},
+    {"array",		Tcl_ArrayObjCmd,	NULL,			1},
+    {"binary",		Tcl_BinaryObjCmd,	NULL,			1},
+    {"break",		Tcl_BreakObjCmd,	TclCompileBreakCmd,	1},
+#ifndef EXCLUDE_OBSOLETE_COMMANDS
+    {"case",		Tcl_CaseObjCmd,		NULL,			1},
+#endif
+    {"catch",		Tcl_CatchObjCmd,	TclCompileCatchCmd,	1},
+    {"concat",		Tcl_ConcatObjCmd,	NULL,			1},
+    {"continue",	Tcl_ContinueObjCmd,	TclCompileContinueCmd,	1},
+    {"error",		Tcl_ErrorObjCmd,	NULL,			1},
+    {"eval",		Tcl_EvalObjCmd,		NULL,			1},
+    {"expr",		Tcl_ExprObjCmd,		TclCompileExprCmd,	1},
+    {"for",		Tcl_ForObjCmd,		TclCompileForCmd,	1},
+    {"foreach",		Tcl_ForeachObjCmd,	TclCompileForeachCmd,	1},
+    {"format",		Tcl_FormatObjCmd,	NULL,			1},
+    {"global",		Tcl_GlobalObjCmd,	TclCompileGlobalCmd,	1},
+    {"if",		Tcl_IfObjCmd,		TclCompileIfCmd,	1},
+    {"incr",		Tcl_IncrObjCmd,		TclCompileIncrCmd,	1},
+    {"join",		Tcl_JoinObjCmd,		NULL,			1},
+    {"lappend",		Tcl_LappendObjCmd,	TclCompileLappendCmd,	1},
+    {"lassign",		Tcl_LassignObjCmd,	TclCompileLassignCmd,	1},
+    {"lindex",		Tcl_LindexObjCmd,	TclCompileLindexCmd,	1},
+    {"linsert",		Tcl_LinsertObjCmd,	NULL,			1},
+    {"list",		Tcl_ListObjCmd,		TclCompileListCmd,	1},
+    {"llength",		Tcl_LlengthObjCmd,	TclCompileLlengthCmd,	1},
+    {"lrange",		Tcl_LrangeObjCmd,	NULL,			1},
+    {"lrepeat",		Tcl_LrepeatObjCmd,	NULL,			1},
+    {"lreplace",	Tcl_LreplaceObjCmd,	NULL,			1},
+    {"lreverse",	Tcl_LreverseObjCmd,	NULL,			1},
+    {"lsearch",		Tcl_LsearchObjCmd,	NULL,			1},
+    {"lset",		Tcl_LsetObjCmd,		TclCompileLsetCmd,	1},
+    {"lsort",		Tcl_LsortObjCmd,	NULL,			1},
+    {"namespace",	Tcl_NamespaceObjCmd,	TclCompileNamespaceCmd,	1},
+    {"package",		Tcl_PackageObjCmd,	NULL,			1},
+    {"proc",		Tcl_ProcObjCmd,		NULL,			1},
+    {"regexp",		Tcl_RegexpObjCmd,	TclCompileRegexpCmd,	1},
+    {"regsub",		Tcl_RegsubObjCmd,	NULL,			1},
+    {"rename",		Tcl_RenameObjCmd,	NULL,			1},
+    {"return",		Tcl_ReturnObjCmd,	TclCompileReturnCmd,	1},
+    {"scan",		Tcl_ScanObjCmd,		NULL,			1},
+    {"set",		Tcl_SetObjCmd,		TclCompileSetCmd,	1},
+    {"split",		Tcl_SplitObjCmd,	NULL,			1},
+    {"subst",		Tcl_SubstObjCmd,	NULL,			1},
+    {"switch",		Tcl_SwitchObjCmd,	TclCompileSwitchCmd,	1},
+    {"trace",		Tcl_TraceObjCmd,	NULL,			1},
+    {"unset",		Tcl_UnsetObjCmd,	NULL,			1},
+    {"uplevel",		Tcl_UplevelObjCmd,	NULL,			1},
+    {"upvar",		Tcl_UpvarObjCmd,	TclCompileUpvarCmd,	1},
+    {"variable",	Tcl_VariableObjCmd,	TclCompileVariableCmd,	1},
+    {"while",		Tcl_WhileObjCmd,	TclCompileWhileCmd,	1},
+
+    /*
+     * Commands in the OS-interface. Note that many of these are unsafe.
+     */
+
+    {"after",		Tcl_AfterObjCmd,	NULL,			1},
+    {"cd",		Tcl_CdObjCmd,		NULL,			0},
+    {"close",		Tcl_CloseObjCmd,	NULL,			1},
+    {"eof",		Tcl_EofObjCmd,		NULL,			1},
+    {"encoding",	Tcl_EncodingObjCmd,	NULL,			0},
+    {"exec",		Tcl_ExecObjCmd,		NULL,			0},
+    {"exit",		Tcl_ExitObjCmd,		NULL,			0},
+    {"fblocked",	Tcl_FblockedObjCmd,	NULL,			1},
+    {"fconfigure",	Tcl_FconfigureObjCmd,	NULL,			0},
+    {"fcopy",		Tcl_FcopyObjCmd,	NULL,			1},
+    {"file",		Tcl_FileObjCmd,		NULL,			0},
+    {"fileevent",	Tcl_FileEventObjCmd,	NULL,			1},
+    {"flush",		Tcl_FlushObjCmd,	NULL,			1},
+    {"gets",		Tcl_GetsObjCmd,		NULL,			1},
+    {"glob",		Tcl_GlobObjCmd,		NULL,			0},
+    {"load",		Tcl_LoadObjCmd,		NULL,			0},
+    {"open",		Tcl_OpenObjCmd,		NULL,			0},
+    {"pid",		Tcl_PidObjCmd,		NULL,			1},
+    {"puts",		Tcl_PutsObjCmd,		NULL,			1},
+    {"pwd",		Tcl_PwdObjCmd,		NULL,			0},
+    {"read",		Tcl_ReadObjCmd,		NULL,			1},
+    {"seek",		Tcl_SeekObjCmd,		NULL,			1},
+    {"socket",		Tcl_SocketObjCmd,	NULL,			0},
+    {"source",		Tcl_SourceObjCmd,	NULL,			0},
+    {"tell",		Tcl_TellObjCmd,		NULL,			1},
+    {"time",		Tcl_TimeObjCmd,		NULL,			1},
+    {"unload",		Tcl_UnloadObjCmd,	NULL,			0},
+    {"update",		Tcl_UpdateObjCmd,	NULL,			1},
+    {"vwait",		Tcl_VwaitObjCmd,	NULL,			1},
+    {NULL,		NULL,			NULL,			0}
 };
 
 /*
- * The following structure holds the client data for string-based
- * trace procs
+ * Math functions. All are safe.
+ */
+
+typedef struct {
+    const char *name;		/* Name of the function. The full name is
+				 * "::tcl::mathfunc::<name>".  */
+    Tcl_ObjCmdProc *objCmdProc;	/* Function that evaluates the function */
+    ClientData clientData;	/* Client data for the function */
+} BuiltinFuncDef;
+static const BuiltinFuncDef BuiltinFuncTable[] = {
+    { "abs",	ExprAbsFunc,	NULL 			},
+    { "acos",	ExprUnaryFunc,	(ClientData) acos 	},
+    { "asin",	ExprUnaryFunc,	(ClientData) asin 	},
+    { "atan",	ExprUnaryFunc,	(ClientData) atan 	},
+    { "atan2",	ExprBinaryFunc,	(ClientData) atan2 	},
+    { "bool",	ExprBoolFunc,	NULL			},
+    { "ceil",	ExprCeilFunc,	NULL		 	},
+    { "cos",	ExprUnaryFunc,	(ClientData) cos 	},
+    { "cosh",	ExprUnaryFunc,	(ClientData) cosh	},
+    { "double",	ExprDoubleFunc,	NULL			},
+    { "entier",	ExprEntierFunc,	NULL			},
+    { "exp",	ExprUnaryFunc,	(ClientData) exp	},
+    { "floor",	ExprFloorFunc,	NULL		 	},
+    { "fmod",	ExprBinaryFunc,	(ClientData) fmod	},
+    { "hypot",	ExprBinaryFunc,	(ClientData) hypot 	},
+    { "int",	ExprIntFunc,	NULL			},
+    { "isqrt",	ExprIsqrtFunc,	NULL			},
+    { "log",	ExprUnaryFunc,	(ClientData) log 	},
+    { "log10",	ExprUnaryFunc,	(ClientData) log10 	},
+    { "pow",	ExprBinaryFunc,	(ClientData) pow 	},
+    { "rand",	ExprRandFunc,	NULL			},
+    { "round",	ExprRoundFunc,	NULL			},
+    { "sin",	ExprUnaryFunc,	(ClientData) sin 	},
+    { "sinh",	ExprUnaryFunc,	(ClientData) sinh 	},
+    { "sqrt",	ExprSqrtFunc,	NULL		 	},
+    { "srand",	ExprSrandFunc,	NULL			},
+    { "tan",	ExprUnaryFunc,	(ClientData) tan 	},
+    { "tanh",	ExprUnaryFunc,	(ClientData) tanh 	},
+    { "wide",	ExprWideFunc,	NULL		 	},
+    { NULL, NULL, NULL }
+};
+
+/*
+ * TIP#174's math operators. All are safe.
+ */
+
+typedef struct {
+    const char *name;		/* Name of object-based command. */
+    Tcl_ObjCmdProc *objProc;	/* Object-based function for command. */
+    CompileProc *compileProc;	/* Function called to compile command. */
+    union {
+	int numArgs;
+	int identity;
+    } i;
+    const char *expected;	/* For error message, what argument(s)
+				 * were expected. */
+} OpCmdInfo;
+static const OpCmdInfo mathOpCmds[] = {
+    { "~",	TclSingleOpCmd,		TclCompileInvertOpCmd,
+		/* numArgs */ {1},	"integer"},
+    { "!",	TclSingleOpCmd,		TclCompileNotOpCmd,
+		/* numArgs */ {1},	"boolean"},
+    { "+",	TclVariadicOpCmd,	TclCompileAddOpCmd,
+		/* identity */ {0},	NULL},
+    { "*",	TclVariadicOpCmd,	TclCompileMulOpCmd,
+		/* identity */ {1},	NULL},
+    { "&",	TclVariadicOpCmd,	TclCompileAndOpCmd,
+		/* identity */ {-1},	NULL},
+    { "|",	TclVariadicOpCmd,	TclCompileOrOpCmd,
+		/* identity */ {0},	NULL},
+    { "^",	TclVariadicOpCmd,	TclCompileXorOpCmd,
+		/* identity */ {0},	NULL},
+    { "**",	TclVariadicOpCmd,	TclCompilePowOpCmd,
+		/* identity */ {1},	NULL},
+    { "<<",	TclSingleOpCmd,		TclCompileLshiftOpCmd,
+		/* numArgs */ {2},	"integer shift"},
+    { ">>",	TclSingleOpCmd,		TclCompileRshiftOpCmd,
+		/* numArgs */ {2},	"integer shift"},
+    { "%",	TclSingleOpCmd,		TclCompileModOpCmd,
+		/* numArgs */ {2},	"integer integer"},
+    { "!=",	TclSingleOpCmd,		TclCompileNeqOpCmd,
+		/* numArgs */ {2},	"value value"},
+    { "ne",	TclSingleOpCmd,		TclCompileStrneqOpCmd,
+		/* numArgs */ {2},	"value value"},
+    { "in",	TclSingleOpCmd,		TclCompileInOpCmd,
+		/* numArgs */ {2},	"value list"},
+    { "ni",	TclSingleOpCmd,		TclCompileNiOpCmd,
+		/* numArgs */ {2},	"value list"},
+    { "-",	TclNoIdentOpCmd,	TclCompileMinusOpCmd,
+		/* unused */ {0},	"value ?value ...?"},
+    { "/",	TclNoIdentOpCmd,	TclCompileDivOpCmd,
+		/* unused */ {0},	"value ?value ...?"},
+    { "<",	TclSortingOpCmd,	TclCompileLessOpCmd,
+		/* unused */ {0},	NULL},
+    { "<=",	TclSortingOpCmd,	TclCompileLeqOpCmd,
+		/* unused */ {0},	NULL},
+    { ">",	TclSortingOpCmd,	TclCompileGreaterOpCmd,
+		/* unused */ {0},	NULL},
+    { ">=",	TclSortingOpCmd,	TclCompileGeqOpCmd,
+		/* unused */ {0},	NULL},
+    { "==",	TclSortingOpCmd,	TclCompileEqOpCmd,
+		/* unused */ {0},	NULL},
+    { "eq",	TclSortingOpCmd,	TclCompileStreqOpCmd,
+		/* unused */ {0},	NULL},
+    { NULL,	NULL,			NULL,
+		{0},			NULL}
+};
+
+/*
+ * Macros for stack checks. The goal of these macros is to allow the size of
+ * the stack to be checked (so preventing overflow) in a *cheap* way. Note
+ * that the check needs to be (amortized) cheap since it is on the critical
+ * path for recursion.
+ */
+
+#if defined(TCL_NO_STACK_CHECK)
+/*
+ * Stack check disabled: make them noops.
  */
 
-typedef struct StringTraceData {
-    ClientData clientData;	/* Client data from Tcl_CreateTrace */
-    Tcl_CmdTraceProc* proc;	/* Trace procedure from Tcl_CreateTrace */
-} StringTraceData;
+#   define CheckCStack(interp, localIntPtr)	1
+#   define GetCStackParams(iPtr)		/* do nothing */
+#elif defined(TCL_CROSS_COMPILE)
+
+/*
+ * This variable is static and only set *once*, during library initialization.
+ * It therefore needs no thread guards.
+ */
+
+static int stackGrowsDown = 1;
+#   define GetCStackParams(iPtr) \
+    stackGrowsDown = TclpGetCStackParams(&((iPtr)->stackBound))
+#   define CheckCStack(iPtr, localIntPtr) \
+    (stackGrowsDown \
+	    ? ((localIntPtr) > (iPtr)->stackBound) \
+	    : ((localIntPtr) < (iPtr)->stackBound) \
+    )
+#else /* !TCL_NO_STACK_CHECK && !TCL_CROSS_COMPILE */
+#   define GetCStackParams(iPtr) \
+    TclpGetCStackParams(&((iPtr)->stackBound))
+#   ifdef TCL_STACK_GROWS_UP
+#	define CheckCStack(iPtr, localIntPtr) \
+	   (!(iPtr)->stackBound || (localIntPtr) < (iPtr)->stackBound)
+#    else /* TCL_STACK_GROWS_UP */
+#	define CheckCStack(iPtr, localIntPtr) \
+	   ((localIntPtr) > (iPtr)->stackBound)
+#    endif /* TCL_STACK_GROWS_UP */
+#endif /* TCL_NO_STACK_CHECK/TCL_CROSS_COMPILE */
 
 /*
  *----------------------------------------------------------------------
@@ -270,28 +367,26 @@ typedef struct StringTraceData {
  *	Create a new TCL command interpreter.
  *
  * Results:
- *	The return value is a token for the interpreter, which may be
- *	used in calls to procedures like Tcl_CreateCmd, Tcl_Eval, or
- *	Tcl_DeleteInterp.
+ *	The return value is a token for the interpreter, which may be used in
+ *	calls to functions like Tcl_CreateCmd, Tcl_Eval, or Tcl_DeleteInterp.
  *
  * Side effects:
- *	The command interpreter is initialized with the built-in commands
- *      and with the variables documented in tclvars(n).
+ *	The command interpreter is initialized with the built-in commands and
+ *	with the variables documented in tclvars(n).
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Interp *
-Tcl_CreateInterp()
+Tcl_CreateInterp(void)
 {
     Interp *iPtr;
     Tcl_Interp *interp;
     Command *cmdPtr;
-    BuiltinFunc *builtinFuncPtr;
-    MathFunc *mathFuncPtr;
-    Tcl_HashEntry *hPtr;
-    CONST CmdInfo *cmdInfoPtr;
-    int i;
+    const BuiltinFuncDef *builtinFuncPtr;
+    const OpCmdInfo *opcmdInfoPtr;
+    const CmdInfo *cmdInfoPtr;
+    Tcl_Namespace *mathfuncNSPtr, *mathopNSPtr;
     union {
 	char c[sizeof(short)];
 	short s;
@@ -299,65 +394,76 @@ Tcl_CreateInterp()
 #ifdef TCL_COMPILE_STATS
     ByteCodeStats *statsPtr;
 #endif /* TCL_COMPILE_STATS */
+    char mathFuncName[32];
+    CallFrame *framePtr;
+    int result;
 
-    TclInitSubsystems(NULL);
+    TclInitSubsystems();
 
     /*
-     * Panic if someone updated the CallFrame structure without
-     * also updating the Tcl_CallFrame structure (or vice versa).
-     */  
+     * Panic if someone updated the CallFrame structure without also updating
+     * the Tcl_CallFrame structure (or vice versa).
+     */
 
     if (sizeof(Tcl_CallFrame) < sizeof(CallFrame)) {
 	/*NOTREACHED*/
-	panic("Tcl_CallFrame must not be smaller than CallFrame");
+	Tcl_Panic("Tcl_CallFrame must not be smaller than CallFrame");
     }
 
     /*
      * Initialize support for namespaces and create the global namespace
-     * (whose name is ""; an alias is "::"). This also initializes the
-     * Tcl object type table and other object management code.
+     * (whose name is ""; an alias is "::"). This also initializes the Tcl
+     * object type table and other object management code.
      */
 
     iPtr = (Interp *) ckalloc(sizeof(Interp));
     interp = (Tcl_Interp *) iPtr;
 
-    iPtr->result		= iPtr->resultSpace;
-    iPtr->freeProc		= NULL;
-    iPtr->errorLine		= 0;
-    iPtr->objResultPtr		= Tcl_NewObj();
+    iPtr->result = iPtr->resultSpace;
+    iPtr->freeProc = NULL;
+    iPtr->errorLine = 0;
+    iPtr->objResultPtr = Tcl_NewObj();
     Tcl_IncrRefCount(iPtr->objResultPtr);
-    iPtr->handle		= TclHandleCreate(iPtr);
-    iPtr->globalNsPtr		= NULL;
-    iPtr->hiddenCmdTablePtr	= NULL;
-    iPtr->interpInfo		= NULL;
-    Tcl_InitHashTable(&iPtr->mathFuncTable, TCL_STRING_KEYS);
+    iPtr->handle = TclHandleCreate(iPtr);
+    iPtr->globalNsPtr = NULL;
+    iPtr->hiddenCmdTablePtr = NULL;
+    iPtr->interpInfo = NULL;
 
     iPtr->numLevels = 0;
     iPtr->maxNestingDepth = MAX_NESTING_DEPTH;
-    iPtr->framePtr = NULL;
-    iPtr->varFramePtr = NULL;
+    iPtr->framePtr = NULL;	/* Initialise as soon as :: is available */
+    iPtr->varFramePtr = NULL;	/* Initialise as soon as :: is available */
 
-#ifdef TCL_TIP280
     /*
      * TIP #280 - Initialize the arrays used to extend the ByteCode and
      * Proc structures.
      */
-    iPtr->cmdFramePtr  = NULL;
-    iPtr->linePBodyPtr = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
-    iPtr->lineBCPtr    = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
-    iPtr->lineLAPtr    = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
-    iPtr->lineLABCPtr  = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
+
+    iPtr->cmdFramePtr = NULL;
+    iPtr->linePBodyPtr = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+    iPtr->lineBCPtr = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+    iPtr->lineLAPtr = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
+    iPtr->lineLABCPtr = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
     Tcl_InitHashTable(iPtr->linePBodyPtr, TCL_ONE_WORD_KEYS);
-    Tcl_InitHashTable(iPtr->lineBCPtr,    TCL_ONE_WORD_KEYS);
-    Tcl_InitHashTable(iPtr->lineLAPtr,    TCL_ONE_WORD_KEYS);
-    Tcl_InitHashTable(iPtr->lineLABCPtr,  TCL_ONE_WORD_KEYS);
+    Tcl_InitHashTable(iPtr->lineBCPtr, TCL_ONE_WORD_KEYS);
+    Tcl_InitHashTable(iPtr->lineLAPtr, TCL_ONE_WORD_KEYS);
+    Tcl_InitHashTable(iPtr->lineLABCPtr, TCL_ONE_WORD_KEYS);
     iPtr->scriptCLLocPtr = NULL;
-#endif
 
     iPtr->activeVarTracePtr = NULL;
-    iPtr->returnCode = TCL_OK;
+
+    iPtr->returnOpts = NULL;
     iPtr->errorInfo = NULL;
+    TclNewLiteralStringObj(iPtr->eiVar, "::errorInfo");
+    Tcl_IncrRefCount(iPtr->eiVar);
     iPtr->errorCode = NULL;
+    TclNewLiteralStringObj(iPtr->ecVar, "::errorCode");
+    Tcl_IncrRefCount(iPtr->ecVar);
+    iPtr->returnLevel = 1;
+    iPtr->returnCode = TCL_OK;
+
+    iPtr->rootFramePtr = NULL;	/* Initialise as soon as :: is available */
+    iPtr->lookupNsPtr = NULL;
 
     iPtr->appendResult = NULL;
     iPtr->appendAvl = 0;
@@ -365,14 +471,15 @@ Tcl_CreateInterp()
 
     Tcl_InitHashTable(&iPtr->packageTable, TCL_STRING_KEYS);
     iPtr->packageUnknown = NULL;
-#ifdef TCL_TIP268
+
     /* TIP #268 */
-    iPtr->packagePrefer = (getenv ("TCL_PKG_PREFER_LATEST") == NULL ? 
-			   PKG_PREFER_STABLE   :
-			   PKG_PREFER_LATEST);
-#endif
+    if (getenv("TCL_PKG_PREFER_LATEST") == NULL) {
+	iPtr->packagePrefer = PKG_PREFER_STABLE;
+    } else {
+	iPtr->packagePrefer = PKG_PREFER_LATEST;
+    }
+
     iPtr->cmdCount = 0;
-    iPtr->termOffset = 0;
     TclInitLiteralTable(&(iPtr->literalTable));
     iPtr->compileEpoch = 0;
     iPtr->compiledProcPtr = NULL;
@@ -384,21 +491,58 @@ Tcl_CreateInterp()
     iPtr->tracesForbiddingInline = 0;
     iPtr->activeCmdTracePtr = NULL;
     iPtr->activeInterpTracePtr = NULL;
-    iPtr->assocData = (Tcl_HashTable *) NULL;
-    iPtr->execEnvPtr = NULL;	      /* set after namespaces initialized */
-    iPtr->emptyObjPtr = Tcl_NewObj(); /* another empty object */
+    iPtr->assocData = NULL;
+    iPtr->execEnvPtr = NULL;	/* Set after namespaces initialized. */
+    iPtr->emptyObjPtr = Tcl_NewObj();
+				/* Another empty object. */
     Tcl_IncrRefCount(iPtr->emptyObjPtr);
     iPtr->resultSpace[0] = 0;
     iPtr->threadId = Tcl_GetCurrentThread();
 
-    iPtr->globalNsPtr = NULL;	/* force creation of global ns below */
+    /* TIP #378 */
+#ifdef TCL_INTERP_DEBUG_FRAME
+    iPtr->flags |= INTERP_DEBUG_FRAME;
+#else
+    if (getenv("TCL_INTERP_DEBUG_FRAME") != NULL) {
+        iPtr->flags |= INTERP_DEBUG_FRAME;
+    }
+#endif
+
+    /*
+     * Initialise the tables for variable traces and searches *before*
+     * creating the global ns - so that the trace on errorInfo can be
+     * recorded.
+     */
+
+    Tcl_InitHashTable(&iPtr->varTraces, TCL_ONE_WORD_KEYS);
+    Tcl_InitHashTable(&iPtr->varSearches, TCL_ONE_WORD_KEYS);
+
+    iPtr->globalNsPtr = NULL;	/* Force creation of global ns below. */
     iPtr->globalNsPtr = (Namespace *) Tcl_CreateNamespace(interp, "",
-	    (ClientData) NULL, (Tcl_NamespaceDeleteProc *) NULL);
+	    NULL, NULL);
     if (iPtr->globalNsPtr == NULL) {
-        panic("Tcl_CreateInterp: can't create global namespace");
+	Tcl_Panic("Tcl_CreateInterp: can't create global namespace");
     }
 
     /*
+     * Initialise the rootCallframe. It cannot be allocated on the stack, as
+     * it has to be in place before TclCreateExecEnv tries to use a variable.
+     */
+
+    /* This is needed to satisfy GCC 3.3's strict aliasing rules */
+    framePtr = (CallFrame *) ckalloc(sizeof(CallFrame));
+    result = Tcl_PushCallFrame(interp, (Tcl_CallFrame *) framePtr,
+	    (Tcl_Namespace *) iPtr->globalNsPtr, /*isProcCallFrame*/ 0);
+    if (result != TCL_OK) {
+	Tcl_Panic("Tcl_CreateInterp: failed to push the root stack frame");
+    }
+    framePtr->objc = 0;
+
+    iPtr->framePtr = framePtr;
+    iPtr->varFramePtr = framePtr;
+    iPtr->rootFramePtr = framePtr;
+
+    /*
      * Initialize support for code compilation and execution. We call
      * TclCreateExecEnv after initializing namespaces since it tries to
      * reference a Tcl variable (it links to the Tcl "tcl_traceExec"
@@ -408,6 +552,12 @@ Tcl_CreateInterp()
     iPtr->execEnvPtr = TclCreateExecEnv(interp);
 
     /*
+     * TIP #219, Tcl Channel Reflection API support.
+     */
+
+    iPtr->chanMsg = NULL;
+
+    /*
      * Initialize the compilation and execution statistics kept for this
      * interpreter.
      */
@@ -417,31 +567,28 @@ Tcl_CreateInterp()
     statsPtr->numExecutions = 0;
     statsPtr->numCompilations = 0;
     statsPtr->numByteCodesFreed = 0;
-    (VOID *) memset(statsPtr->instructionCount, 0,
+    (void) memset(statsPtr->instructionCount, 0,
 	    sizeof(statsPtr->instructionCount));
 
     statsPtr->totalSrcBytes = 0.0;
     statsPtr->totalByteCodeBytes = 0.0;
     statsPtr->currentSrcBytes = 0.0;
     statsPtr->currentByteCodeBytes = 0.0;
-    (VOID *) memset(statsPtr->srcCount, 0, sizeof(statsPtr->srcCount));
-    (VOID *) memset(statsPtr->byteCodeCount, 0,
-	    sizeof(statsPtr->byteCodeCount));
-    (VOID *) memset(statsPtr->lifetimeCount, 0,
-	    sizeof(statsPtr->lifetimeCount));
-    
-    statsPtr->currentInstBytes   = 0.0;
-    statsPtr->currentLitBytes    = 0.0;
+    (void) memset(statsPtr->srcCount, 0, sizeof(statsPtr->srcCount));
+    (void) memset(statsPtr->byteCodeCount, 0, sizeof(statsPtr->byteCodeCount));
+    (void) memset(statsPtr->lifetimeCount, 0, sizeof(statsPtr->lifetimeCount));
+
+    statsPtr->currentInstBytes = 0.0;
+    statsPtr->currentLitBytes = 0.0;
     statsPtr->currentExceptBytes = 0.0;
-    statsPtr->currentAuxBytes    = 0.0;
+    statsPtr->currentAuxBytes = 0.0;
     statsPtr->currentCmdMapBytes = 0.0;
-    
-    statsPtr->numLiteralsCreated    = 0;
-    statsPtr->totalLitStringBytes   = 0.0;
+
+    statsPtr->numLiteralsCreated = 0;
+    statsPtr->totalLitStringBytes = 0.0;
     statsPtr->currentLitStringBytes = 0.0;
-    (VOID *) memset(statsPtr->literalCount, 0,
-            sizeof(statsPtr->literalCount));
-#endif /* TCL_COMPILE_STATS */    
+    (void) memset(statsPtr->literalCount, 0, sizeof(statsPtr->literalCount));
+#endif /* TCL_COMPILE_STATS */
 
     /*
      * Initialise the stub table pointer.
@@ -449,54 +596,74 @@ Tcl_CreateInterp()
 
     iPtr->stubTable = &tclStubs;
 
-    
+    /*
+     * Initialize the ensemble error message rewriting support.
+     */
+
+    iPtr->ensembleRewrite.sourceObjs = NULL;
+    iPtr->ensembleRewrite.numRemovedObjs = 0;
+    iPtr->ensembleRewrite.numInsertedObjs = 0;
+
+    /*
+     * TIP#143: Initialise the resource limit support.
+     */
+
+    TclInitLimitSupport(interp);
+
+    /*
+     * Initialise the thread-specific data ekeko.
+     */
+
+#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
+    iPtr->allocCache = TclpGetAllocCache();
+#else
+    iPtr->allocCache = NULL;
+#endif
+    iPtr->pendingObjDataPtr = NULL;
+    iPtr->asyncReadyPtr = TclGetAsyncReadyPtr();
+
+    /*
+     * Insure that the stack checking mechanism for this interp is
+     * initialized.
+     */
+
+    GetCStackParams(iPtr);
+
     /*
      * Create the core commands. Do it here, rather than calling
-     * Tcl_CreateCommand, because it's faster (there's no need to check for
-     * a pre-existing command by the same name). If a command has a
-     * Tcl_CmdProc but no Tcl_ObjCmdProc, set the Tcl_ObjCmdProc to
-     * TclInvokeStringCommand. This is an object-based wrapper procedure
-     * that extracts strings, calls the string procedure, and creates an
-     * object for the result. Similarly, if a command has a Tcl_ObjCmdProc
-     * but no Tcl_CmdProc, set the Tcl_CmdProc to TclInvokeObjectCommand.
-     */
-
-    for (cmdInfoPtr = builtInCmds;  cmdInfoPtr->name != NULL;
-	    cmdInfoPtr++) {
-	int new;
+     * Tcl_CreateCommand, because it's faster (there's no need to check for a
+     * pre-existing command by the same name). If a command has a Tcl_CmdProc
+     * but no Tcl_ObjCmdProc, set the Tcl_ObjCmdProc to
+     * TclInvokeStringCommand. This is an object-based wrapper function that
+     * extracts strings, calls the string function, and creates an object for
+     * the result. Similarly, if a command has a Tcl_ObjCmdProc but no
+     * Tcl_CmdProc, set the Tcl_CmdProc to TclInvokeObjectCommand.
+     */
+
+    for (cmdInfoPtr = builtInCmds;  cmdInfoPtr->name != NULL; cmdInfoPtr++) {
+	int isNew;
 	Tcl_HashEntry *hPtr;
 
-	if ((cmdInfoPtr->proc == (Tcl_CmdProc *) NULL)
-	        && (cmdInfoPtr->objProc == (Tcl_ObjCmdProc *) NULL)
-	        && (cmdInfoPtr->compileProc == (CompileProc *) NULL)) {
-	    panic("Tcl_CreateInterp: builtin command with NULL string and object command procs and a NULL compile proc\n");
+	if ((cmdInfoPtr->objProc == NULL)
+		&& (cmdInfoPtr->compileProc == NULL)) {
+	    Tcl_Panic("builtin command with NULL object command proc and a NULL compile proc");
 	}
-	
+
 	hPtr = Tcl_CreateHashEntry(&iPtr->globalNsPtr->cmdTable,
-	        cmdInfoPtr->name, &new);
-	if (new) {
+		cmdInfoPtr->name, &isNew);
+	if (isNew) {
 	    cmdPtr = (Command *) ckalloc(sizeof(Command));
 	    cmdPtr->hPtr = hPtr;
 	    cmdPtr->nsPtr = iPtr->globalNsPtr;
 	    cmdPtr->refCount = 1;
 	    cmdPtr->cmdEpoch = 0;
 	    cmdPtr->compileProc = cmdInfoPtr->compileProc;
-	    if (cmdInfoPtr->proc == (Tcl_CmdProc *) NULL) {
-		cmdPtr->proc = TclInvokeObjectCommand;
-		cmdPtr->clientData = (ClientData) cmdPtr;
-	    } else {
-		cmdPtr->proc = cmdInfoPtr->proc;
-		cmdPtr->clientData = (ClientData) NULL;
-	    }
-	    if (cmdInfoPtr->objProc == (Tcl_ObjCmdProc *) NULL) {
-		cmdPtr->objProc = TclInvokeStringCommand;
-		cmdPtr->objClientData = (ClientData) cmdPtr;
-	    } else {
-		cmdPtr->objProc = cmdInfoPtr->objProc;
-		cmdPtr->objClientData = (ClientData) NULL;
-	    }
+	    cmdPtr->proc = TclInvokeObjectCommand;
+	    cmdPtr->clientData = cmdPtr;
+	    cmdPtr->objProc = cmdInfoPtr->objProc;
+	    cmdPtr->objClientData = NULL;
 	    cmdPtr->deleteProc = NULL;
-	    cmdPtr->deleteData = (ClientData) NULL;
+	    cmdPtr->deleteData = NULL;
 	    cmdPtr->flags = 0;
 	    cmdPtr->importRefPtr = NULL;
 	    cmdPtr->tracePtr = NULL;
@@ -504,6 +671,44 @@ Tcl_CreateInterp()
 	}
     }
 
+    /*
+     * Create the "chan", "dict", "info" and "string" ensembles. Note that all
+     * these commands (and their subcommands that are not present in the
+     * global namespace) are wholly safe.
+     */
+
+    TclInitChanCmd(interp);
+    TclInitDictCmd(interp);
+    TclInitInfoCmd(interp);
+    TclInitStringCmd(interp);
+
+    /*
+     * Register "clock" subcommands. These *do* go through
+     * Tcl_CreateObjCommand, since they aren't in the global namespace and
+     * involve ensembles.
+     */
+
+    TclClockInit(interp);
+
+    /*
+     * Register the built-in functions. This is empty now that they are
+     * implemented as commands in the ::tcl::mathfunc namespace.
+     */
+
+    /*
+     * Register the default [interp bgerror] handler.
+     */
+
+    Tcl_CreateObjCommand(interp, "::tcl::Bgerror",
+	    TclDefaultBgErrorHandlerObjCmd, NULL, NULL);
+
+    /*
+     * Create an unsupported command for debugging bytecode.
+     */
+
+    Tcl_CreateObjCommand(interp, "::tcl::unsupported::disassemble",
+	    Tcl_DisassembleObjCmd, NULL, NULL);
+
 #ifdef USE_DTRACE
     /*
      * Register the tcl::dtrace command.
@@ -516,57 +721,61 @@ Tcl_CreateInterp()
      * Register the builtin math functions.
      */
 
-    i = 0;
-    for (builtinFuncPtr = tclBuiltinFuncTable;  builtinFuncPtr->name != NULL;
+    mathfuncNSPtr = Tcl_CreateNamespace(interp, "::tcl::mathfunc", NULL,NULL);
+    if (mathfuncNSPtr == NULL) {
+	Tcl_Panic("Can't create math function namespace");
+    }
+    strcpy(mathFuncName, "::tcl::mathfunc::");
+#define MATH_FUNC_PREFIX_LEN 17 /* == strlen("::tcl::mathfunc::") */
+    for (builtinFuncPtr = BuiltinFuncTable; builtinFuncPtr->name != NULL;
 	    builtinFuncPtr++) {
-	Tcl_CreateMathFunc((Tcl_Interp *) iPtr, builtinFuncPtr->name,
-		builtinFuncPtr->numArgs, builtinFuncPtr->argTypes,
-		(Tcl_MathProc *) NULL, (ClientData) 0);
-	hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable,
-		builtinFuncPtr->name);
-	if (hPtr == NULL) {
-	    panic("Tcl_CreateInterp: Tcl_CreateMathFunc incorrectly registered '%s'", builtinFuncPtr->name);
-	    return NULL;
+	strcpy(mathFuncName+MATH_FUNC_PREFIX_LEN, builtinFuncPtr->name);
+	Tcl_CreateObjCommand(interp, mathFuncName,
+		builtinFuncPtr->objCmdProc, builtinFuncPtr->clientData, NULL);
+	Tcl_Export(interp, mathfuncNSPtr, builtinFuncPtr->name, 0);
+    }
+
+    /*
+     * Register the mathematical "operator" commands. [TIP #174]
+     */
+
+    mathopNSPtr = Tcl_CreateNamespace(interp, "::tcl::mathop", NULL, NULL);
+#define MATH_OP_PREFIX_LEN 15 /* == strlen("::tcl::mathop::") */
+    if (mathopNSPtr == NULL) {
+	Tcl_Panic("can't create math operator namespace");
+    }
+    (void) Tcl_Export(interp, mathopNSPtr, "*", 1);
+    strcpy(mathFuncName, "::tcl::mathop::");
+    for (opcmdInfoPtr=mathOpCmds ; opcmdInfoPtr->name!=NULL ; opcmdInfoPtr++){
+	TclOpCmdClientData *occdPtr = (TclOpCmdClientData *)
+		ckalloc(sizeof(TclOpCmdClientData));
+
+	occdPtr->op = opcmdInfoPtr->name;
+	occdPtr->i.numArgs = opcmdInfoPtr->i.numArgs;
+	occdPtr->expected = opcmdInfoPtr->expected;
+	strcpy(mathFuncName + MATH_OP_PREFIX_LEN, opcmdInfoPtr->name);
+	cmdPtr = (Command *) Tcl_CreateObjCommand(interp, mathFuncName,
+		opcmdInfoPtr->objProc, occdPtr, DeleteOpCmdClientData);
+	if (cmdPtr == NULL) {
+	    Tcl_Panic("failed to create math operator %s",
+		    opcmdInfoPtr->name);
+	} else if (opcmdInfoPtr->compileProc != NULL) {
+	    cmdPtr->compileProc = opcmdInfoPtr->compileProc;
 	}
-	mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr);
-	mathFuncPtr->builtinFuncIndex = i;
-	i++;
     }
-    iPtr->flags |= EXPR_INITIALIZED;
 
     /*
      * Do Multiple/Safe Interps Tcl init stuff
      */
 
     TclInterpInit(interp);
+    TclSetupEnv(interp);
 
     /*
-     * We used to create the "errorInfo" and "errorCode" global vars at this
-     * point because so much of the Tcl implementation assumes they already
-     * exist. This is not quite enough, however, since they can be unset
-     * at any time.
-     *
-     * There are 2 choices:
-     *    + Check every place where a GetVar of those is used 
-     *      and the NULL result is not checked (like in tclLoad.c)
-     *    + Make SetVar,... NULL friendly
-     * We choose the second option because :
-     *    + It is easy and low cost to check for NULL pointer before
-     *      calling strlen()
-     *    + It can be helpfull to other people using those API
-     *    + Passing a NULL value to those closest 'meaning' is empty string
-     *      (specially with the new objects where 0 bytes strings are ok)
-     * So the following init is commented out:              -- dl
-     *
-     * (void) Tcl_SetVar2((Tcl_Interp *)iPtr, "errorInfo", (char *) NULL,
-     *       "", TCL_GLOBAL_ONLY);
-     * (void) Tcl_SetVar2((Tcl_Interp *)iPtr, "errorCode", (char *) NULL,
-     *       "NONE", TCL_GLOBAL_ONLY);
+     * TIP #59: Make embedded configuration information available.
      */
 
-#ifndef TCL_GENERIC_ONLY
-    TclSetupEnv(interp);
-#endif
+    TclInitEmbeddedConfigurationInformation(interp);
 
     /*
      * Compute the byte order of this machine.
@@ -580,62 +789,66 @@ Tcl_CreateInterp()
     Tcl_SetVar2Ex(interp, "tcl_platform", "wordSize",
 	    Tcl_NewLongObj((long) sizeof(long)), TCL_GLOBAL_ONLY);
 
+    /* TIP #291 */
+    Tcl_SetVar2Ex(interp, "tcl_platform", "pointerSize",
+	    Tcl_NewLongObj((long) sizeof(void *)), TCL_GLOBAL_ONLY);
+
     /*
      * Set up other variables such as tcl_version and tcl_library
      */
 
     Tcl_SetVar(interp, "tcl_patchLevel", TCL_PATCH_LEVEL, TCL_GLOBAL_ONLY);
     Tcl_SetVar(interp, "tcl_version", TCL_VERSION, TCL_GLOBAL_ONLY);
-    Tcl_TraceVar2(interp, "tcl_precision", (char *) NULL,
+    Tcl_TraceVar2(interp, "tcl_precision", NULL,
 	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
-	    TclPrecTraceProc, (ClientData) NULL);
+	    TclPrecTraceProc, NULL);
     TclpSetVariables(interp);
 
 #ifdef TCL_THREADS
     /*
-     * The existence of the "threaded" element of the tcl_platform array indicates
-     * that this particular Tcl shell has been compiled with threads turned on.
-     * Using "info exists tcl_platform(threaded)" a Tcl script can introspect on the 
-     * interpreter level of thread safety.
+     * The existence of the "threaded" element of the tcl_platform array
+     * indicates that this particular Tcl shell has been compiled with threads
+     * turned on. Using "info exists tcl_platform(threaded)" a Tcl script can
+     * introspect on the interpreter level of thread safety.
      */
 
-
-    Tcl_SetVar2(interp, "tcl_platform", "threaded", "1",
-	    TCL_GLOBAL_ONLY);
+    Tcl_SetVar2(interp, "tcl_platform", "threaded", "1", TCL_GLOBAL_ONLY);
 #endif
 
     /*
      * Register Tcl's version number.
-     * TIP#268: Expose information about its status,
-     *          for runtime switches in the core library
-     *          and tests.
+     * TIP #268: Full patchlevel instead of just major.minor
      */
 
-    Tcl_PkgProvideEx(interp, "Tcl", TCL_VERSION, (ClientData) &tclStubs);
+    Tcl_PkgProvideEx(interp, "Tcl", TCL_PATCH_LEVEL, &tclStubs);
 
-#ifdef TCL_TIP268
-    Tcl_SetVar2(interp, "tcl_platform", "tip,268", "1",
-	    TCL_GLOBAL_ONLY);
-#endif
-#ifdef TCL_TIP280
-    Tcl_SetVar2(interp, "tcl_platform", "tip,280", "1",
-	    TCL_GLOBAL_ONLY);
-#endif
 #ifdef Tcl_InitStubs
 #undef Tcl_InitStubs
 #endif
     Tcl_InitStubs(interp, TCL_VERSION, 1);
 
+    if (TclTommath_Init(interp) != TCL_OK) {
+	Tcl_Panic("%s", Tcl_GetString(Tcl_GetObjResult(interp)));
+    }
+
     return interp;
 }
+
+static void
+DeleteOpCmdClientData(
+    ClientData clientData)
+{
+    TclOpCmdClientData *occdPtr = clientData;
+
+    ckfree((char *) occdPtr);
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * TclHideUnsafeCommands --
  *
- *	Hides base commands that are not marked as safe from this
- *	interpreter.
+ *	Hides base commands that are not marked as safe from this interpreter.
  *
  * Results:
  *	TCL_OK if it succeeds, TCL_ERROR else.
@@ -647,18 +860,18 @@ Tcl_CreateInterp()
  */
 
 int
-TclHideUnsafeCommands(interp)
-    Tcl_Interp *interp;		/* Hide commands in this interpreter. */
+TclHideUnsafeCommands(
+    Tcl_Interp *interp)		/* Hide commands in this interpreter. */
 {
-    register CONST CmdInfo *cmdInfoPtr;
+    register const CmdInfo *cmdInfoPtr;
 
-    if (interp == (Tcl_Interp *) NULL) {
-        return TCL_ERROR;
+    if (interp == NULL) {
+	return TCL_ERROR;
     }
     for (cmdInfoPtr = builtInCmds; cmdInfoPtr->name != NULL; cmdInfoPtr++) {
-        if (!cmdInfoPtr->isSafe) {
-            Tcl_HideCommand(interp, cmdInfoPtr->name, cmdInfoPtr->name);
-        }
+	if (!cmdInfoPtr->isSafe) {
+	    Tcl_HideCommand(interp, cmdInfoPtr->name, cmdInfoPtr->name);
+	}
     }
     return TCL_OK;
 }
@@ -668,36 +881,34 @@ TclHideUnsafeCommands(interp)
  *
  * Tcl_CallWhenDeleted --
  *
- *	Arrange for a procedure to be called before a given
- *	interpreter is deleted. The procedure is called as soon
- *	as Tcl_DeleteInterp is called; if Tcl_CallWhenDeleted is
- *	called on an interpreter that has already been deleted,
- *	the procedure will be called when the last Tcl_Release is
+ *	Arrange for a function to be called before a given interpreter is
+ *	deleted. The function is called as soon as Tcl_DeleteInterp is called;
+ *	if Tcl_CallWhenDeleted is called on an interpreter that has already
+ *	been deleted, the function will be called when the last Tcl_Release is
  *	done on the interpreter.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	When Tcl_DeleteInterp is invoked to delete interp,
- *	proc will be invoked.  See the manual entry for
- *	details.
+ *	When Tcl_DeleteInterp is invoked to delete interp, proc will be
+ *	invoked. See the manual entry for details.
  *
  *--------------------------------------------------------------
  */
 
 void
-Tcl_CallWhenDeleted(interp, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter to watch. */
-    Tcl_InterpDeleteProc *proc;	/* Procedure to call when interpreter
-				 * is about to be deleted. */
-    ClientData clientData;	/* One-word value to pass to proc. */
+Tcl_CallWhenDeleted(
+    Tcl_Interp *interp,		/* Interpreter to watch. */
+    Tcl_InterpDeleteProc *proc,	/* Function to call when interpreter is about
+				 * to be deleted. */
+    ClientData clientData)	/* One-word value to pass to proc. */
 {
     Interp *iPtr = (Interp *) interp;
     static Tcl_ThreadDataKey assocDataCounterKey;
     int *assocDataCounterPtr =
 	    Tcl_GetThreadData(&assocDataCounterKey, (int)sizeof(int));
-    int new;
+    int isNew;
     char buffer[32 + TCL_INTEGER_SPACE];
     AssocData *dPtr = (AssocData *) ckalloc(sizeof(AssocData));
     Tcl_HashEntry *hPtr;
@@ -705,11 +916,11 @@ Tcl_CallWhenDeleted(interp, proc, clientData)
     sprintf(buffer, "Assoc Data Key #%d", *assocDataCounterPtr);
     (*assocDataCounterPtr)++;
 
-    if (iPtr->assocData == (Tcl_HashTable *) NULL) {
-        iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
-        Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS);
+    if (iPtr->assocData == NULL) {
+	iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+	Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS);
     }
-    hPtr = Tcl_CreateHashEntry(iPtr->assocData, buffer, &new);
+    hPtr = Tcl_CreateHashEntry(iPtr->assocData, buffer, &isNew);
     dPtr->proc = proc;
     dPtr->clientData = clientData;
     Tcl_SetHashValue(hPtr, dPtr);
@@ -720,27 +931,26 @@ Tcl_CallWhenDeleted(interp, proc, clientData)
  *
  * Tcl_DontCallWhenDeleted --
  *
- *	Cancel the arrangement for a procedure to be called when
- *	a given interpreter is deleted.
+ *	Cancel the arrangement for a function to be called when a given
+ *	interpreter is deleted.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If proc and clientData were previously registered as a
- *	callback via Tcl_CallWhenDeleted, they are unregistered.
- *	If they weren't previously registered then nothing
- *	happens.
+ *	If proc and clientData were previously registered as a callback via
+ *	Tcl_CallWhenDeleted, they are unregistered. If they weren't previously
+ *	registered then nothing happens.
  *
  *--------------------------------------------------------------
  */
 
 void
-Tcl_DontCallWhenDeleted(interp, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter to watch. */
-    Tcl_InterpDeleteProc *proc;	/* Procedure to call when interpreter
-				 * is about to be deleted. */
-    ClientData clientData;	/* One-word value to pass to proc. */
+Tcl_DontCallWhenDeleted(
+    Tcl_Interp *interp,		/* Interpreter to watch. */
+    Tcl_InterpDeleteProc *proc,	/* Function to call when interpreter is about
+				 * to be deleted. */
+    ClientData clientData)	/* One-word value to pass to proc. */
 {
     Interp *iPtr = (Interp *) interp;
     Tcl_HashTable *hTablePtr;
@@ -749,17 +959,17 @@ Tcl_DontCallWhenDeleted(interp, proc, clientData)
     AssocData *dPtr;
 
     hTablePtr = iPtr->assocData;
-    if (hTablePtr == (Tcl_HashTable *) NULL) {
-        return;
+    if (hTablePtr == NULL) {
+	return;
     }
     for (hPtr = Tcl_FirstHashEntry(hTablePtr, &hSearch); hPtr != NULL;
 	    hPtr = Tcl_NextHashEntry(&hSearch)) {
-        dPtr = (AssocData *) Tcl_GetHashValue(hPtr);
-        if ((dPtr->proc == proc) && (dPtr->clientData == clientData)) {
-            ckfree((char *) dPtr);
-            Tcl_DeleteHashEntry(hPtr);
-            return;
-        }
+	dPtr = (AssocData *) Tcl_GetHashValue(hPtr);
+	if ((dPtr->proc == proc) && (dPtr->clientData == clientData)) {
+	    ckfree((char *) dPtr);
+	    Tcl_DeleteHashEntry(hPtr);
+	    return;
+	}
     }
 }
 
@@ -769,9 +979,9 @@ Tcl_DontCallWhenDeleted(interp, proc, clientData)
  * Tcl_SetAssocData --
  *
  *	Creates a named association between user-specified data, a delete
- *	function and this interpreter. If the association already exists
- *	the data is overwritten with the new data. The delete function will
- *	be invoked when the interpreter is deleted.
+ *	function and this interpreter. If the association already exists the
+ *	data is overwritten with the new data. The delete function will be
+ *	invoked when the interpreter is deleted.
  *
  * Results:
  *	None.
@@ -783,27 +993,27 @@ Tcl_DontCallWhenDeleted(interp, proc, clientData)
  */
 
 void
-Tcl_SetAssocData(interp, name, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter to associate with. */
-    CONST char *name;		/* Name for association. */
-    Tcl_InterpDeleteProc *proc;	/* Proc to call when interpreter is
-                                 * about to be deleted. */
-    ClientData clientData;	/* One-word value to pass to proc. */
+Tcl_SetAssocData(
+    Tcl_Interp *interp,		/* Interpreter to associate with. */
+    const char *name,		/* Name for association. */
+    Tcl_InterpDeleteProc *proc,	/* Proc to call when interpreter is about to
+				 * be deleted. */
+    ClientData clientData)	/* One-word value to pass to proc. */
 {
     Interp *iPtr = (Interp *) interp;
     AssocData *dPtr;
     Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
 
-    if (iPtr->assocData == (Tcl_HashTable *) NULL) {
-        iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
-        Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS);
+    if (iPtr->assocData == NULL) {
+	iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+	Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS);
     }
-    hPtr = Tcl_CreateHashEntry(iPtr->assocData, name, &new);
-    if (new == 0) {
-        dPtr = (AssocData *) Tcl_GetHashValue(hPtr);
+    hPtr = Tcl_CreateHashEntry(iPtr->assocData, name, &isNew);
+    if (isNew == 0) {
+	dPtr = Tcl_GetHashValue(hPtr);
     } else {
-        dPtr = (AssocData *) ckalloc(sizeof(AssocData));
+	dPtr = (AssocData *) ckalloc(sizeof(AssocData));
     }
     dPtr->proc = proc;
     dPtr->clientData = clientData;
@@ -816,8 +1026,8 @@ Tcl_SetAssocData(interp, name, proc, clientData)
  *
  * Tcl_DeleteAssocData --
  *
- *	Deletes a named association of user-specified data with
- *	the specified interpreter.
+ *	Deletes a named association of user-specified data with the specified
+ *	interpreter.
  *
  * Results:
  *	None.
@@ -829,24 +1039,24 @@ Tcl_SetAssocData(interp, name, proc, clientData)
  */
 
 void
-Tcl_DeleteAssocData(interp, name)
-    Tcl_Interp *interp;			/* Interpreter to associate with. */
-    CONST char *name;			/* Name of association. */
+Tcl_DeleteAssocData(
+    Tcl_Interp *interp,		/* Interpreter to associate with. */
+    const char *name)		/* Name of association. */
 {
     Interp *iPtr = (Interp *) interp;
     AssocData *dPtr;
     Tcl_HashEntry *hPtr;
 
-    if (iPtr->assocData == (Tcl_HashTable *) NULL) {
-        return;
+    if (iPtr->assocData == NULL) {
+	return;
     }
     hPtr = Tcl_FindHashEntry(iPtr->assocData, name);
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        return;
+    if (hPtr == NULL) {
+	return;
     }
-    dPtr = (AssocData *) Tcl_GetHashValue(hPtr);
+    dPtr = Tcl_GetHashValue(hPtr);
     if (dPtr->proc != NULL) {
-        (dPtr->proc) (dPtr->clientData, interp);
+	dPtr->proc(dPtr->clientData, interp);
     }
     ckfree((char *) dPtr);
     Tcl_DeleteHashEntry(hPtr);
@@ -857,8 +1067,8 @@ Tcl_DeleteAssocData(interp, name)
  *
  * Tcl_GetAssocData --
  *
- *	Returns the client data associated with this name in the
- *	specified interpreter.
+ *	Returns the client data associated with this name in the specified
+ *	interpreter.
  *
  * Results:
  *	The client data in the AssocData record denoted by the named
@@ -871,26 +1081,27 @@ Tcl_DeleteAssocData(interp, name)
  */
 
 ClientData
-Tcl_GetAssocData(interp, name, procPtr)
-    Tcl_Interp *interp;			/* Interpreter associated with. */
-    CONST char *name;			/* Name of association. */
-    Tcl_InterpDeleteProc **procPtr;	/* Pointer to place to store address
-					 * of current deletion callback. */
+Tcl_GetAssocData(
+    Tcl_Interp *interp,		/* Interpreter associated with. */
+    const char *name,		/* Name of association. */
+    Tcl_InterpDeleteProc **procPtr)
+				/* Pointer to place to store address of
+				 * current deletion callback. */
 {
     Interp *iPtr = (Interp *) interp;
     AssocData *dPtr;
     Tcl_HashEntry *hPtr;
 
-    if (iPtr->assocData == (Tcl_HashTable *) NULL) {
-        return (ClientData) NULL;
+    if (iPtr->assocData == NULL) {
+	return NULL;
     }
     hPtr = Tcl_FindHashEntry(iPtr->assocData, name);
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        return (ClientData) NULL;
+    if (hPtr == NULL) {
+	return NULL;
     }
-    dPtr = (AssocData *) Tcl_GetHashValue(hPtr);
-    if (procPtr != (Tcl_InterpDeleteProc **) NULL) {
-        *procPtr = dPtr->proc;
+    dPtr = Tcl_GetHashValue(hPtr);
+    if (procPtr != NULL) {
+	*procPtr = dPtr->proc;
     }
     return dPtr->clientData;
 }
@@ -900,8 +1111,8 @@ Tcl_GetAssocData(interp, name, procPtr)
  *
  * Tcl_InterpDeleted --
  *
- *	Returns nonzero if the interpreter has been deleted with a call
- *	to Tcl_DeleteInterp.
+ *	Returns nonzero if the interpreter has been deleted with a call to
+ *	Tcl_DeleteInterp.
  *
  * Results:
  *	Nonzero if the interpreter is deleted, zero otherwise.
@@ -913,8 +1124,8 @@ Tcl_GetAssocData(interp, name, procPtr)
  */
 
 int
-Tcl_InterpDeleted(interp)
-    Tcl_Interp *interp;
+Tcl_InterpDeleted(
+    Tcl_Interp *interp)
 {
     return (((Interp *) interp)->flags & DELETED) ? 1 : 0;
 }
@@ -924,11 +1135,11 @@ Tcl_InterpDeleted(interp)
  *
  * Tcl_DeleteInterp --
  *
- *	Ensures that the interpreter will be deleted eventually. If there
- *	are no Tcl_Preserve calls in effect for this interpreter, it is
- *	deleted immediately, otherwise the interpreter is deleted when
- *	the last Tcl_Preserve is matched by a call to Tcl_Release. In either
- *	case, the procedure runs the currently registered deletion callbacks. 
+ *	Ensures that the interpreter will be deleted eventually. If there are
+ *	no Tcl_Preserve calls in effect for this interpreter, it is deleted
+ *	immediately, otherwise the interpreter is deleted when the last
+ *	Tcl_Preserve is matched by a call to Tcl_Release. In either case, the
+ *	function runs the currently registered deletion callbacks.
  *
  * Results:
  *	None.
@@ -943,9 +1154,9 @@ Tcl_InterpDeleted(interp)
  */
 
 void
-Tcl_DeleteInterp(interp)
-    Tcl_Interp *interp;		/* Token for command interpreter (returned
-				 * by a previous call to Tcl_CreateInterp). */
+Tcl_DeleteInterp(
+    Tcl_Interp *interp)		/* Token for command interpreter (returned by
+				 * a previous call to Tcl_CreateInterp). */
 {
     Interp *iPtr = (Interp *) interp;
 
@@ -954,21 +1165,22 @@ Tcl_DeleteInterp(interp)
      */
 
     if (iPtr->flags & DELETED) {
-        return;
+	return;
     }
-    
+
     /*
      * Mark the interpreter as deleted. No further evals will be allowed.
+     * Increase the compileEpoch as a signal to compiled bytecodes.
      */
 
     iPtr->flags |= DELETED;
+    iPtr->compileEpoch++;
 
     /*
      * Ensure that the interpreter is eventually deleted.
      */
 
-    Tcl_EventuallyFree((ClientData) interp,
-            (Tcl_FreeProc *) DeleteInterpProc);
+    Tcl_EventuallyFree(interp, (Tcl_FreeProc *) DeleteInterpProc);
 }
 
 /*
@@ -976,25 +1188,25 @@ Tcl_DeleteInterp(interp)
  *
  * DeleteInterpProc --
  *
- *	Helper procedure to delete an interpreter. This procedure is
- *	called when the last call to Tcl_Preserve on this interpreter
- *	is matched by a call to Tcl_Release. The procedure cleans up
- *	all resources used in the interpreter and calls all currently
- *	registered interpreter deletion callbacks.
+ *	Helper function to delete an interpreter. This function is called when
+ *	the last call to Tcl_Preserve on this interpreter is matched by a call
+ *	to Tcl_Release. The function cleans up all resources used in the
+ *	interpreter and calls all currently registered interpreter deletion
+ *	callbacks.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Whatever the interpreter deletion callbacks do. Frees resources
- *	used by the interpreter.
+ *	Whatever the interpreter deletion callbacks do. Frees resources used
+ *	by the interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-DeleteInterpProc(interp)
-    Tcl_Interp *interp;			/* Interpreter to delete. */
+DeleteInterpProc(
+    Tcl_Interp *interp)		/* Interpreter to delete. */
 {
     Interp *iPtr = (Interp *) interp;
     Tcl_HashEntry *hPtr;
@@ -1005,120 +1217,137 @@ DeleteInterpProc(interp)
     /*
      * Punt if there is an error in the Tcl_Release/Tcl_Preserve matchup.
      */
-    
+
     if (iPtr->numLevels > 0) {
-        panic("DeleteInterpProc called with active evals");
+	Tcl_Panic("DeleteInterpProc called with active evals");
     }
 
     /*
-     * The interpreter should already be marked deleted; otherwise how
-     * did we get here?
+     * The interpreter should already be marked deleted; otherwise how did we
+     * get here?
      */
 
     if (!(iPtr->flags & DELETED)) {
-        panic("DeleteInterpProc called on interpreter not marked deleted");
+	Tcl_Panic("DeleteInterpProc called on interpreter not marked deleted");
     }
 
-    TclHandleFree(iPtr->handle);
+    /*
+     * TIP #219, Tcl Channel Reflection API. Discard a leftover state.
+     */
+
+    if (iPtr->chanMsg != NULL) {
+	Tcl_DecrRefCount(iPtr->chanMsg);
+	iPtr->chanMsg = NULL;
+    }
+
+    /*
+     * Shut down all limit handler callback scripts that call back into this
+     * interpreter. Then eliminate all limit handlers for this interpreter.
+     */
+
+    TclRemoveScriptLimitCallbacks(interp);
+    TclLimitRemoveAllHandlers(interp);
 
     /*
-     * Dismantle everything in the global namespace except for the
-     * "errorInfo" and "errorCode" variables. These remain until the
-     * namespace is actually destroyed, in case any errors occur.
-     *   
      * Dismantle the namespace here, before we clear the assocData. If any
      * background errors occur here, they will be deleted below.
+     *
+     * Dismantle the namespace after freeing the iPtr->handle so that each
+     * bytecode releases its literals without caring to update the literal
+     * table, as it will be freed later in this function without further use.
      */
-    
+
+    TclHandleFree(iPtr->handle);
     TclTeardownNamespace(iPtr->globalNsPtr);
 
     /*
      * Delete all the hidden commands.
      */
-     
+
     hTablePtr = iPtr->hiddenCmdTablePtr;
     if (hTablePtr != NULL) {
 	/*
-	 * Non-pernicious deletion.  The deletion callbacks will not be
-	 * allowed to create any new hidden or non-hidden commands.
+	 * Non-pernicious deletion. The deletion callbacks will not be allowed
+	 * to create any new hidden or non-hidden commands.
 	 * Tcl_DeleteCommandFromToken() will remove the entry from the
 	 * hiddenCmdTablePtr.
 	 */
-	 
+
 	hPtr = Tcl_FirstHashEntry(hTablePtr, &search);
-	for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
+	for (; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
 	    Tcl_DeleteCommandFromToken(interp,
 		    (Tcl_Command) Tcl_GetHashValue(hPtr));
 	}
 	Tcl_DeleteHashTable(hTablePtr);
 	ckfree((char *) hTablePtr);
     }
+
     /*
-     * Tear down the math function table.
+     * Invoke deletion callbacks; note that a callback can create new
+     * callbacks, so we iterate.
      */
 
-    for (hPtr = Tcl_FirstHashEntry(&iPtr->mathFuncTable, &search);
-	     hPtr != NULL;
-             hPtr = Tcl_NextHashEntry(&search)) {
-	ckfree((char *) Tcl_GetHashValue(hPtr));
+    while (iPtr->assocData != NULL) {
+	AssocData *dPtr;
+
+	hTablePtr = iPtr->assocData;
+	iPtr->assocData = NULL;
+	for (hPtr = Tcl_FirstHashEntry(hTablePtr, &search);
+		hPtr != NULL;
+		hPtr = Tcl_FirstHashEntry(hTablePtr, &search)) {
+	    dPtr = Tcl_GetHashValue(hPtr);
+	    Tcl_DeleteHashEntry(hPtr);
+	    if (dPtr->proc != NULL) {
+		dPtr->proc(dPtr->clientData, interp);
+	    }
+	    ckfree((char *) dPtr);
+	}
+	Tcl_DeleteHashTable(hTablePtr);
+	ckfree((char *) hTablePtr);
     }
-    Tcl_DeleteHashTable(&iPtr->mathFuncTable);
 
     /*
-     * Invoke deletion callbacks; note that a callback can create new
-     * callbacks, so we iterate.
+     * Pop the root frame pointer and finish deleting the global
+     * namespace. The order is important [Bug 1658572].
      */
 
-    while (iPtr->assocData != (Tcl_HashTable *) NULL) {
-	AssocData *dPtr;
-	
-        hTablePtr = iPtr->assocData;
-        iPtr->assocData = (Tcl_HashTable *) NULL;
-        for (hPtr = Tcl_FirstHashEntry(hTablePtr, &search);
-                 hPtr != NULL;
-                 hPtr = Tcl_FirstHashEntry(hTablePtr, &search)) {
-            dPtr = (AssocData *) Tcl_GetHashValue(hPtr);
-            Tcl_DeleteHashEntry(hPtr);
-            if (dPtr->proc != NULL) {
-                (*dPtr->proc)(dPtr->clientData, interp);
-            }
-            ckfree((char *) dPtr);
-        }
-        Tcl_DeleteHashTable(hTablePtr);
-        ckfree((char *) hTablePtr);
-    }
-
-    /*
-     * Finish deleting the global namespace.
-     */
-    
+    if (iPtr->framePtr != iPtr->rootFramePtr) {
+	Tcl_Panic("DeleteInterpProc: popping rootCallFrame with other frames on top");
+    }
+    Tcl_PopCallFrame(interp);
+    ckfree((char *) iPtr->rootFramePtr);
+    iPtr->rootFramePtr = NULL;
     Tcl_DeleteNamespace((Tcl_Namespace *) iPtr->globalNsPtr);
 
     /*
-     * Free up the result *after* deleting variables, since variable
-     * deletion could have transferred ownership of the result string
-     * to Tcl.
+     * Free up the result *after* deleting variables, since variable deletion
+     * could have transferred ownership of the result string to Tcl.
      */
 
     Tcl_FreeResult(interp);
     interp->result = NULL;
     Tcl_DecrRefCount(iPtr->objResultPtr);
     iPtr->objResultPtr = NULL;
-    if (iPtr->errorInfo != NULL) {
-	ckfree(iPtr->errorInfo);
-        iPtr->errorInfo = NULL;
+    Tcl_DecrRefCount(iPtr->ecVar);
+    if (iPtr->errorCode) {
+	Tcl_DecrRefCount(iPtr->errorCode);
+	iPtr->errorCode = NULL;
     }
-    if (iPtr->errorCode != NULL) {
-	ckfree(iPtr->errorCode);
-        iPtr->errorCode = NULL;
+    Tcl_DecrRefCount(iPtr->eiVar);
+    if (iPtr->errorInfo) {
+	Tcl_DecrRefCount(iPtr->errorInfo);
+	iPtr->errorInfo = NULL;
+    }
+    if (iPtr->returnOpts) {
+	Tcl_DecrRefCount(iPtr->returnOpts);
     }
     if (iPtr->appendResult != NULL) {
 	ckfree(iPtr->appendResult);
-        iPtr->appendResult = NULL;
+	iPtr->appendResult = NULL;
     }
     TclFreePackageInfo(iPtr);
     while (iPtr->tracePtr != NULL) {
-	Tcl_DeleteTrace((Tcl_Interp*) iPtr, (Tcl_Trace) iPtr->tracePtr);
+	Tcl_DeleteTrace((Tcl_Interp *) iPtr, (Tcl_Trace) iPtr->tracePtr);
     }
     if (iPtr->execEnvPtr != NULL) {
 	TclDeleteExecEnv(iPtr->execEnvPtr);
@@ -1135,9 +1364,9 @@ DeleteInterpProc(interp)
 	nextResPtr = resPtr->nextPtr;
 	ckfree(resPtr->name);
 	ckfree((char *) resPtr);
-        resPtr = nextResPtr;
+	resPtr = nextResPtr;
     }
-    
+
     /*
      * Free up literal objects created for scripts compiled by the
      * interpreter.
@@ -1145,60 +1374,62 @@ DeleteInterpProc(interp)
 
     TclDeleteLiteralTable(interp, &(iPtr->literalTable));
 
-#ifdef TCL_TIP280
-    /* TIP #280 - Release the arrays for ByteCode/Proc extension, and contents.
+    /*
+     * TIP #280 - Release the arrays for ByteCode/Proc extension, and
+     * contents.
      */
+
     {
-        Tcl_HashEntry *hPtr;
+	Tcl_HashEntry *hPtr;
 	Tcl_HashSearch hSearch;
-	CmdFrame*      cfPtr;
-	ExtCmdLoc*     eclPtr;
-	int            i;
+	int i;
 
 	for (hPtr = Tcl_FirstHashEntry(iPtr->linePBodyPtr, &hSearch);
-	     hPtr != NULL;
-	     hPtr = Tcl_NextHashEntry(&hSearch)) {
-
-	    cfPtr = (CmdFrame*) Tcl_GetHashValue (hPtr);
-
-	    if (cfPtr->type == TCL_LOCATION_SOURCE) {
-	        Tcl_DecrRefCount (cfPtr->data.eval.path);
+		hPtr != NULL;
+		hPtr = Tcl_NextHashEntry(&hSearch)) {
+	    CmdFrame *cfPtr = Tcl_GetHashValue(hPtr);
+	    Proc *procPtr = (Proc *) Tcl_GetHashKey(iPtr->linePBodyPtr, hPtr);
+	    procPtr->iPtr = NULL;
+	    if (cfPtr) {
+		if (cfPtr->type == TCL_LOCATION_SOURCE) {
+		    Tcl_DecrRefCount(cfPtr->data.eval.path);
+		}
+		ckfree((char *) cfPtr->line);
+		ckfree((char *) cfPtr);
 	    }
-	    ckfree ((char*) cfPtr->line);
-	    ckfree ((char*) cfPtr);
-	    Tcl_DeleteHashEntry (hPtr);
-
+	    Tcl_DeleteHashEntry(hPtr);
 	}
-	Tcl_DeleteHashTable (iPtr->linePBodyPtr);
-	ckfree ((char*) iPtr->linePBodyPtr);
+	Tcl_DeleteHashTable(iPtr->linePBodyPtr);
+	ckfree((char *) iPtr->linePBodyPtr);
 	iPtr->linePBodyPtr = NULL;
 
-	/* See also tclCompile.c, TclCleanupByteCode */
+	/*
+	 * See also tclCompile.c, TclCleanupByteCode
+	 */
 
 	for (hPtr = Tcl_FirstHashEntry(iPtr->lineBCPtr, &hSearch);
-	     hPtr != NULL;
-	     hPtr = Tcl_NextHashEntry(&hSearch)) {
-
-	    eclPtr = (ExtCmdLoc*) Tcl_GetHashValue (hPtr);
+		hPtr != NULL;
+		hPtr = Tcl_NextHashEntry(&hSearch)) {
+	    ExtCmdLoc *eclPtr = (ExtCmdLoc *) Tcl_GetHashValue(hPtr);
 
 	    if (eclPtr->type == TCL_LOCATION_SOURCE) {
-	        Tcl_DecrRefCount (eclPtr->path);
+		Tcl_DecrRefCount(eclPtr->path);
 	    }
 	    for (i=0; i< eclPtr->nuloc; i++) {
-	        ckfree ((char*) eclPtr->loc[i].line);
+		ckfree((char *) eclPtr->loc[i].line);
 	    }
 
-            if (eclPtr->loc != NULL) {
-		ckfree ((char*) eclPtr->loc);
+	    if (eclPtr->loc != NULL) {
+		ckfree((char *) eclPtr->loc);
 	    }
 
 	    Tcl_DeleteHashTable (&eclPtr->litInfo);
 
-	    ckfree ((char*) eclPtr);
-	    Tcl_DeleteHashEntry (hPtr);
+	    ckfree((char *) eclPtr);
+	    Tcl_DeleteHashEntry(hPtr);
 	}
-	Tcl_DeleteHashTable (iPtr->lineBCPtr);
-	ckfree((char*) iPtr->lineBCPtr);
+	Tcl_DeleteHashTable(iPtr->lineBCPtr);
+	ckfree((char *) iPtr->lineBCPtr);
 	iPtr->lineBCPtr = NULL;
 
 	/*
@@ -1234,7 +1465,10 @@ DeleteInterpProc(interp)
 	ckfree((char*) iPtr->lineLABCPtr);
 	iPtr->lineLABCPtr = NULL;
     }
-#endif
+
+    Tcl_DeleteHashTable(&iPtr->varTraces);
+    Tcl_DeleteHashTable(&iPtr->varSearches);
+
     ckfree((char *) iPtr);
 }
 
@@ -1243,79 +1477,77 @@ DeleteInterpProc(interp)
  *
  * Tcl_HideCommand --
  *
- *	Makes a command hidden so that it cannot be invoked from within
- *	an interpreter, only from within an ancestor.
+ *	Makes a command hidden so that it cannot be invoked from within an
+ *	interpreter, only from within an ancestor.
  *
  * Results:
- *	A standard Tcl result; also leaves a message in the interp's result
- *	if an error occurs.
+ *	A standard Tcl result; also leaves a message in the interp's result if
+ *	an error occurs.
  *
  * Side effects:
- *	Removes a command from the command table and create an entry
- *      into the hidden command table under the specified token name.
+ *	Removes a command from the command table and create an entry into the
+ *	hidden command table under the specified token name.
  *
  *---------------------------------------------------------------------------
  */
 
 int
-Tcl_HideCommand(interp, cmdName, hiddenCmdToken)
-    Tcl_Interp *interp;		/* Interpreter in which to hide command. */
-    CONST char *cmdName;	/* Name of command to hide. */
-    CONST char *hiddenCmdToken;	/* Token name of the to-be-hidden command. */
+Tcl_HideCommand(
+    Tcl_Interp *interp,		/* Interpreter in which to hide command. */
+    const char *cmdName,	/* Name of command to hide. */
+    const char *hiddenCmdToken)	/* Token name of the to-be-hidden command. */
 {
     Interp *iPtr = (Interp *) interp;
     Tcl_Command cmd;
     Command *cmdPtr;
     Tcl_HashTable *hiddenCmdTablePtr;
     Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
 
     if (iPtr->flags & DELETED) {
+	/*
+	 * The interpreter is being deleted. Do not create any new structures,
+	 * because it is not safe to modify the interpreter.
+	 */
 
-        /*
-         * The interpreter is being deleted. Do not create any new
-         * structures, because it is not safe to modify the interpreter.
-         */
-        
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
      * Disallow hiding of commands that are currently in a namespace or
-     * renaming (as part of hiding) into a namespace.
-     *
-     * (because the current implementation with a single global table
-     *  and the needed uniqueness of names cause problems with namespaces)
+     * renaming (as part of hiding) into a namespace (because the current
+     * implementation with a single global table and the needed uniqueness of
+     * names cause problems with namespaces).
      *
-     * we don't need to check for "::" in cmdName because the real check is
-     * on the nsPtr below.
+     * We don't need to check for "::" in cmdName because the real check is on
+     * the nsPtr below.
      *
-     * hiddenCmdToken is just a string which is not interpreted in any way.
-     * It may contain :: but the string is not interpreted as a namespace
+     * hiddenCmdToken is just a string which is not interpreted in any way. It
+     * may contain :: but the string is not interpreted as a namespace
      * qualifier command name. Thus, hiding foo::bar to foo::bar and then
      * trying to expose or invoke ::foo::bar will NOT work; but if the
      * application always uses the same strings it will get consistent
      * behaviour.
      *
-     * But as we currently limit ourselves to the global namespace only
-     * for the source, in order to avoid potential confusion,
-     * lets prevent "::" in the token too.  --dl
+     * But as we currently limit ourselves to the global namespace only for
+     * the source, in order to avoid potential confusion, lets prevent "::" in
+     * the token too. - dl
      */
 
     if (strstr(hiddenCmdToken, "::") != NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "cannot use namespace qualifiers in hidden command",
-		" token (rename)", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"cannot use namespace qualifiers in hidden command"
+		" token (rename)", NULL);
+	return TCL_ERROR;
     }
 
     /*
-     * Find the command to hide. An error is returned if cmdName can't
-     * be found. Look up the command only from the global namespace.
-     * Full path of the command must be given if using namespaces.
+     * Find the command to hide. An error is returned if cmdName can't be
+     * found. Look up the command only from the global namespace. Full path of
+     * the command must be given if using namespaces.
      */
 
-    cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL,
+    cmd = Tcl_FindCommand(interp, cmdName, NULL,
 	    /*flags*/ TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY);
     if (cmd == (Tcl_Command) NULL) {
 	return TCL_ERROR;
@@ -1326,22 +1558,21 @@ Tcl_HideCommand(interp, cmdName, hiddenCmdToken)
      * Check that the command is really in global namespace
      */
 
-    if ( cmdPtr->nsPtr != iPtr->globalNsPtr ) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "can only hide global namespace commands",
-		" (use rename then hide)", (char *) NULL);
-        return TCL_ERROR;
+    if (cmdPtr->nsPtr != iPtr->globalNsPtr) {
+	Tcl_AppendResult(interp, "can only hide global namespace commands"
+		" (use rename then hide)", NULL);
+	return TCL_ERROR;
     }
-    
+
     /*
      * Initialize the hidden command table if necessary.
      */
 
     hiddenCmdTablePtr = iPtr->hiddenCmdTablePtr;
     if (hiddenCmdTablePtr == NULL) {
-        hiddenCmdTablePtr = (Tcl_HashTable *)
-	        ckalloc((unsigned) sizeof(Tcl_HashTable));
-        Tcl_InitHashTable(hiddenCmdTablePtr, TCL_STRING_KEYS);
+	hiddenCmdTablePtr = (Tcl_HashTable *)
+		ckalloc((unsigned) sizeof(Tcl_HashTable));
+	Tcl_InitHashTable(hiddenCmdTablePtr, TCL_STRING_KEYS);
 	iPtr->hiddenCmdTablePtr = hiddenCmdTablePtr;
     }
 
@@ -1350,20 +1581,18 @@ Tcl_HideCommand(interp, cmdName, hiddenCmdToken)
      * hiddenCmdToken if a hidden command with the name hiddenCmdToken already
      * exists.
      */
-    
-    hPtr = Tcl_CreateHashEntry(hiddenCmdTablePtr, hiddenCmdToken, &new);
-    if (!new) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "hidden command named \"", hiddenCmdToken, "\" already exists",
-                (char *) NULL);
-        return TCL_ERROR;
+
+    hPtr = Tcl_CreateHashEntry(hiddenCmdTablePtr, hiddenCmdToken, &isNew);
+    if (!isNew) {
+	Tcl_AppendResult(interp, "hidden command named \"", hiddenCmdToken,
+		"\" already exists", NULL);
+	return TCL_ERROR;
     }
 
     /*
-     * Nb : This code is currently 'like' a rename to a specialy set apart
-     * name table. Changes here and in TclRenameCommand must
-     * be kept in synch untill the common parts are actually
-     * factorized out.
+     * NB: This code is currently 'like' a rename to a specialy set apart name
+     * table. Changes here and in TclRenameCommand must be kept in synch until
+     * the common parts are actually factorized out.
      */
 
     /*
@@ -1373,26 +1602,34 @@ Tcl_HideCommand(interp, cmdName, hiddenCmdToken)
      */
 
     if (cmdPtr->hPtr != NULL) {
-        Tcl_DeleteHashEntry(cmdPtr->hPtr);
-        cmdPtr->hPtr = (Tcl_HashEntry *) NULL;
+	Tcl_DeleteHashEntry(cmdPtr->hPtr);
+	cmdPtr->hPtr = NULL;
 	cmdPtr->cmdEpoch++;
     }
 
     /*
-     * Now link the hash table entry with the command structure.
-     * We ensured above that the nsPtr was right.
+     * The list of command exported from the namespace might have changed.
+     * However, we do not need to recompute this just yet; next time we need
+     * the info will be soon enough.
      */
-    
+
+    TclInvalidateNsCmdLookup(cmdPtr->nsPtr);
+
+    /*
+     * Now link the hash table entry with the command structure. We ensured
+     * above that the nsPtr was right.
+     */
+
     cmdPtr->hPtr = hPtr;
-    Tcl_SetHashValue(hPtr, (ClientData) cmdPtr);
+    Tcl_SetHashValue(hPtr, cmdPtr);
 
     /*
-     * If the command being hidden has a compile procedure, increment the
-     * interpreter's compileEpoch to invalidate its compiled code. This
-     * makes sure that we don't later try to execute old code compiled with
-     * command-specific (i.e., inline) bytecodes for the now-hidden
-     * command. This field is checked in Tcl_EvalObj and ObjInterpProc,
-     * and code whose compilation epoch doesn't match is recompiled.
+     * If the command being hidden has a compile function, increment the
+     * interpreter's compileEpoch to invalidate its compiled code. This makes
+     * sure that we don't later try to execute old code compiled with
+     * command-specific (i.e., inline) bytecodes for the now-hidden command.
+     * This field is checked in Tcl_EvalObj and ObjInterpProc, and code whose
+     * compilation epoch doesn't match is recompiled.
      */
 
     if (cmdPtr->compileProc != NULL) {
@@ -1406,12 +1643,12 @@ Tcl_HideCommand(interp, cmdName, hiddenCmdToken)
  *
  * Tcl_ExposeCommand --
  *
- *	Makes a previously hidden command callable from inside the
- *	interpreter instead of only by its ancestors.
+ *	Makes a previously hidden command callable from inside the interpreter
+ *	instead of only by its ancestors.
  *
  * Results:
- *	A standard Tcl result. If an error occurs, a message is left
- *	in the interp's result.
+ *	A standard Tcl result. If an error occurs, a message is left in the
+ *	interp's result.
  *
  * Side effects:
  *	Moves commands from one hash table to another.
@@ -1420,40 +1657,38 @@ Tcl_HideCommand(interp, cmdName, hiddenCmdToken)
  */
 
 int
-Tcl_ExposeCommand(interp, hiddenCmdToken, cmdName)
-    Tcl_Interp *interp;		/* Interpreter in which to make command
-                                 * callable. */
-    CONST char *hiddenCmdToken;	/* Name of hidden command. */
-    CONST char *cmdName;	/* Name of to-be-exposed command. */
+Tcl_ExposeCommand(
+    Tcl_Interp *interp,		/* Interpreter in which to make command
+				 * callable. */
+    const char *hiddenCmdToken,	/* Name of hidden command. */
+    const char *cmdName)	/* Name of to-be-exposed command. */
 {
     Interp *iPtr = (Interp *) interp;
     Command *cmdPtr;
     Namespace *nsPtr;
     Tcl_HashEntry *hPtr;
     Tcl_HashTable *hiddenCmdTablePtr;
-    int new;
+    int isNew;
 
     if (iPtr->flags & DELETED) {
-        /*
-         * The interpreter is being deleted. Do not create any new
-         * structures, because it is not safe to modify the interpreter.
-         */
-        
-        return TCL_ERROR;
+	/*
+	 * The interpreter is being deleted. Do not create any new structures,
+	 * because it is not safe to modify the interpreter.
+	 */
+
+	return TCL_ERROR;
     }
 
     /*
-     * Check that we have a regular name for the command
-     * (that the user is not trying to do an expose and a rename
-     *  (to another namespace) at the same time)
+     * Check that we have a regular name for the command (that the user is not
+     * trying to do an expose and a rename (to another namespace) at the same
+     * time).
      */
 
     if (strstr(cmdName, "::") != NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "can not expose to a namespace ",
-		"(use expose to toplevel, then rename)",
-                 (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "cannot expose to a namespace "
+		"(use expose to toplevel, then rename)", NULL);
+	return TCL_ERROR;
     }
 
     /*
@@ -1465,82 +1700,90 @@ Tcl_ExposeCommand(interp, hiddenCmdToken, cmdName)
     if (hiddenCmdTablePtr != NULL) {
 	hPtr = Tcl_FindHashEntry(hiddenCmdTablePtr, hiddenCmdToken);
     }
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "unknown hidden command \"", hiddenCmdToken,
-                "\"", (char *) NULL);
-        return TCL_ERROR;
+    if (hPtr == NULL) {
+	Tcl_AppendResult(interp, "unknown hidden command \"", hiddenCmdToken,
+		"\"", NULL);
+	return TCL_ERROR;
     }
-    cmdPtr = (Command *) Tcl_GetHashValue(hPtr);
-    
+    cmdPtr = Tcl_GetHashValue(hPtr);
 
     /*
-     * Check that we have a true global namespace
-     * command (enforced by Tcl_HideCommand() but let's double
-     * check. (If it was not, we would not really know how to
-     * handle it).
+     * Check that we have a true global namespace command (enforced by
+     * Tcl_HideCommand() but let's double check. (If it was not, we would not
+     * really know how to handle it).
      */
-    if ( cmdPtr->nsPtr != iPtr->globalNsPtr ) {
-	/* 
-	 * This case is theoritically impossible,
-	 * we might rather panic() than 'nicely' erroring out ?
+
+    if (cmdPtr->nsPtr != iPtr->globalNsPtr) {
+	/*
+	 * This case is theoritically impossible, we might rather Tcl_Panic()
+	 * than 'nicely' erroring out ?
 	 */
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "trying to expose a non global command name space command",
-		(char *) NULL);
-        return TCL_ERROR;
+
+	Tcl_AppendResult(interp,
+		"trying to expose a non global command name space command",
+		NULL);
+	return TCL_ERROR;
     }
-    
-    /* This is the global table */
+
+    /*
+     * This is the global table.
+     */
+
     nsPtr = cmdPtr->nsPtr;
 
     /*
-     * It is an error to overwrite an existing exposed command as a result
-     * of exposing a previously hidden command.
+     * It is an error to overwrite an existing exposed command as a result of
+     * exposing a previously hidden command.
      */
 
-    hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, cmdName, &new);
-    if (!new) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "exposed command \"", cmdName,
-                "\" already exists", (char *) NULL);
-        return TCL_ERROR;
+    hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, cmdName, &isNew);
+    if (!isNew) {
+	Tcl_AppendResult(interp, "exposed command \"", cmdName,
+		"\" already exists", NULL);
+	return TCL_ERROR;
     }
 
     /*
+     * The list of command exported from the namespace might have changed.
+     * However, we do not need to recompute this just yet; next time we need
+     * the info will be soon enough.
+     */
+
+    TclInvalidateNsCmdLookup(nsPtr);
+
+    /*
      * Remove the hash entry for the command from the interpreter hidden
      * command table.
      */
 
     if (cmdPtr->hPtr != NULL) {
-        Tcl_DeleteHashEntry(cmdPtr->hPtr);
-        cmdPtr->hPtr = NULL;
+	Tcl_DeleteHashEntry(cmdPtr->hPtr);
+	cmdPtr->hPtr = NULL;
     }
 
     /*
-     * Now link the hash table entry with the command structure.
-     * This is like creating a new command, so deal with any shadowing
-     * of commands in the global namespace.
+     * Now link the hash table entry with the command structure. This is like
+     * creating a new command, so deal with any shadowing of commands in the
+     * global namespace.
      */
-    
+
     cmdPtr->hPtr = hPtr;
 
-    Tcl_SetHashValue(hPtr, (ClientData) cmdPtr);
+    Tcl_SetHashValue(hPtr, cmdPtr);
 
     /*
-     * Not needed as we are only in the global namespace
-     * (but would be needed again if we supported namespace command hiding)
+     * Not needed as we are only in the global namespace (but would be needed
+     * again if we supported namespace command hiding)
      *
      * TclResetShadowedCmdRefs(interp, cmdPtr);
      */
 
-
     /*
-     * If the command being exposed has a compile procedure, increment
-     * interpreter's compileEpoch to invalidate its compiled code. This
-     * makes sure that we don't later try to execute old code compiled
-     * assuming the command is hidden. This field is checked in Tcl_EvalObj
-     * and ObjInterpProc, and code whose compilation epoch doesn't match is
+     * If the command being exposed has a compile function, increment
+     * interpreter's compileEpoch to invalidate its compiled code. This makes
+     * sure that we don't later try to execute old code compiled assuming the
+     * command is hidden. This field is checked in Tcl_EvalObj and
+     * ObjInterpProc, and code whose compilation epoch doesn't match is
      * recompiled.
      */
 
@@ -1558,94 +1801,103 @@ Tcl_ExposeCommand(interp, hiddenCmdToken, cmdName)
  *	Define a new command in a command table.
  *
  * Results:
- *	The return value is a token for the command, which can
- *	be used in future calls to Tcl_GetCommandName.
+ *	The return value is a token for the command, which can be used in
+ *	future calls to Tcl_GetCommandName.
  *
  * Side effects:
  *	If a command named cmdName already exists for interp, it is deleted.
  *	In the future, when cmdName is seen as the name of a command by
  *	Tcl_Eval, proc will be called. To support the bytecode interpreter,
  *	the command is created with a wrapper Tcl_ObjCmdProc
- *	(TclInvokeStringCommand) that eventially calls proc. When the
- *	command is deleted from the table, deleteProc will be called.
- *	See the manual entry for details on the calling sequence.
+ *	(TclInvokeStringCommand) that eventially calls proc. When the command
+ *	is deleted from the table, deleteProc will be called. See the manual
+ *	entry for details on the calling sequence.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Command
-Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc)
-    Tcl_Interp *interp;		/* Token for command interpreter returned by
-				 * a previous call to Tcl_CreateInterp. */
-    CONST char *cmdName;	/* Name of command. If it contains namespace
+Tcl_CreateCommand(
+    Tcl_Interp *interp,		/* Token for command interpreter returned by a
+				 * previous call to Tcl_CreateInterp. */
+    const char *cmdName,	/* Name of command. If it contains namespace
 				 * qualifiers, the new command is put in the
-				 * specified namespace; otherwise it is put
-				 * in the global namespace. */
-    Tcl_CmdProc *proc;		/* Procedure to associate with cmdName. */
-    ClientData clientData;	/* Arbitrary value passed to string proc. */
-    Tcl_CmdDeleteProc *deleteProc;
-				/* If not NULL, gives a procedure to call
-				 * when this command is deleted. */
+				 * specified namespace; otherwise it is put in
+				 * the global namespace. */
+    Tcl_CmdProc *proc,		/* Function to associate with cmdName. */
+    ClientData clientData,	/* Arbitrary value passed to string proc. */
+    Tcl_CmdDeleteProc *deleteProc)
+				/* If not NULL, gives a function to call when
+				 * this command is deleted. */
 {
     Interp *iPtr = (Interp *) interp;
     ImportRef *oldRefPtr = NULL;
     Namespace *nsPtr, *dummy1, *dummy2;
     Command *cmdPtr, *refCmdPtr;
     Tcl_HashEntry *hPtr;
-    CONST char *tail;
-    int new;
+    const char *tail;
+    int isNew;
     ImportedCmdData *dataPtr;
 
     if (iPtr->flags & DELETED) {
 	/*
-	 * The interpreter is being deleted.  Don't create any new
-	 * commands; it's not safe to muck with the interpreter anymore.
+	 * The interpreter is being deleted. Don't create any new commands;
+	 * it's not safe to muck with the interpreter anymore.
 	 */
 
 	return (Tcl_Command) NULL;
     }
 
     /*
-     * Determine where the command should reside. If its name contains 
-     * namespace qualifiers, we put it in the specified namespace; 
-     * otherwise, we always put it in the global namespace.
+     * Determine where the command should reside. If its name contains
+     * namespace qualifiers, we put it in the specified namespace; otherwise,
+     * we always put it in the global namespace.
      */
 
     if (strstr(cmdName, "::") != NULL) {
-       TclGetNamespaceForQualName(interp, cmdName, (Namespace *) NULL,
-           CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail);
-       if ((nsPtr == NULL) || (tail == NULL)) {
+	TclGetNamespaceForQualName(interp, cmdName, NULL,
+		TCL_CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail);
+	if ((nsPtr == NULL) || (tail == NULL)) {
 	    return (Tcl_Command) NULL;
 	}
     } else {
 	nsPtr = iPtr->globalNsPtr;
 	tail = cmdName;
     }
-    
-    hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new);
-    if (!new) {
+
+    hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &isNew);
+    if (!isNew) {
 	/*
-	 * Command already exists. Delete the old one.
-	 * Be careful to preserve any existing import links so we can
-	 * restore them down below.  That way, you can redefine a
-	 * command and its import status will remain intact.
+	 * Command already exists. Delete the old one. Be careful to preserve
+	 * any existing import links so we can restore them down below. That
+	 * way, you can redefine a command and its import status will remain
+	 * intact.
 	 */
 
-	cmdPtr = (Command *) Tcl_GetHashValue(hPtr);
+	cmdPtr = Tcl_GetHashValue(hPtr);
 	oldRefPtr = cmdPtr->importRefPtr;
 	cmdPtr->importRefPtr = NULL;
 
 	Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr);
-	hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new);
-	if (!new) {
+	hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &isNew);
+	if (!isNew) {
 	    /*
-	     * If the deletion callback recreated the command, just throw
-             * away the new command (if we try to delete it again, we
-             * could get stuck in an infinite loop).
+	     * If the deletion callback recreated the command, just throw away
+	     * the new command (if we try to delete it again, we could get
+	     * stuck in an infinite loop).
 	     */
 
-	     ckfree((char*) Tcl_GetHashValue(hPtr));
+	     ckfree((char *) Tcl_GetHashValue(hPtr));
 	}
+    } else {
+	/*
+	 * The list of command exported from the namespace might have changed.
+	 * However, we do not need to recompute this just yet; next time we
+	 * need the info will be soon enough.
+	 */
+
+	TclInvalidateNsCmdLookup(nsPtr);
+	TclInvalidateNsPath(nsPtr);
     }
     cmdPtr = (Command *) ckalloc(sizeof(Command));
     Tcl_SetHashValue(hPtr, cmdPtr);
@@ -1653,9 +1905,9 @@ Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc)
     cmdPtr->nsPtr = nsPtr;
     cmdPtr->refCount = 1;
     cmdPtr->cmdEpoch = 0;
-    cmdPtr->compileProc = (CompileProc *) NULL;
+    cmdPtr->compileProc = NULL;
     cmdPtr->objProc = TclInvokeStringCommand;
-    cmdPtr->objClientData = (ClientData) cmdPtr;
+    cmdPtr->objClientData = cmdPtr;
     cmdPtr->proc = proc;
     cmdPtr->clientData = clientData;
     cmdPtr->deleteProc = deleteProc;
@@ -1665,15 +1917,15 @@ Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc)
     cmdPtr->tracePtr = NULL;
 
     /*
-     * Plug in any existing import references found above.  Be sure
-     * to update all of these references to point to the new command.
+     * Plug in any existing import references found above. Be sure to update
+     * all of these references to point to the new command.
      */
 
     if (oldRefPtr != NULL) {
 	cmdPtr->importRefPtr = oldRefPtr;
 	while (oldRefPtr != NULL) {
 	    refCmdPtr = oldRefPtr->importedCmdPtr;
-	    dataPtr = (ImportedCmdData*)refCmdPtr->objClientData;
+	    dataPtr = refCmdPtr->objClientData;
 	    dataPtr->realCmdPtr = cmdPtr;
 	    oldRefPtr = oldRefPtr->nextPtr;
 	}
@@ -1685,7 +1937,7 @@ Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc)
      * shadowed commands are found, invalidate all cached command references
      * in the affected namespaces.
      */
-    
+
     TclResetShadowedCmdRefs(interp, cmdPtr);
     return (Tcl_Command) cmdPtr;
 }
@@ -1698,70 +1950,70 @@ Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc)
  *	Define a new object-based command in a command table.
  *
  * Results:
- *	The return value is a token for the command, which can
- *	be used in future calls to Tcl_GetCommandName.
+ *	The return value is a token for the command, which can be used in
+ *	future calls to Tcl_GetCommandName.
  *
  * Side effects:
  *	If no command named "cmdName" already exists for interp, one is
- *	created. Otherwise, if a command does exist, then if the
- *	object-based Tcl_ObjCmdProc is TclInvokeStringCommand, we assume
- *	Tcl_CreateCommand was called previously for the same command and
- *	just set its Tcl_ObjCmdProc to the argument "proc"; otherwise, we
- *	delete the old command.
+ *	created. Otherwise, if a command does exist, then if the object-based
+ *	Tcl_ObjCmdProc is TclInvokeStringCommand, we assume Tcl_CreateCommand
+ *	was called previously for the same command and just set its
+ *	Tcl_ObjCmdProc to the argument "proc"; otherwise, we delete the old
+ *	command.
  *
  *	In the future, during bytecode evaluation when "cmdName" is seen as
  *	the name of a command by Tcl_EvalObj or Tcl_Eval, the object-based
  *	Tcl_ObjCmdProc proc will be called. When the command is deleted from
- *	the table, deleteProc will be called. See the manual entry for
- *	details on the calling sequence.
+ *	the table, deleteProc will be called. See the manual entry for details
+ *	on the calling sequence.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Command
-Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc)
-    Tcl_Interp *interp;		/* Token for command interpreter (returned
-				 * by previous call to Tcl_CreateInterp). */
-    CONST char *cmdName;	/* Name of command. If it contains namespace
+Tcl_CreateObjCommand(
+    Tcl_Interp *interp,		/* Token for command interpreter (returned by
+				 * previous call to Tcl_CreateInterp). */
+    const char *cmdName,	/* Name of command. If it contains namespace
 				 * qualifiers, the new command is put in the
-				 * specified namespace; otherwise it is put
-				 * in the global namespace. */
-    Tcl_ObjCmdProc *proc;	/* Object-based procedure to associate with
+				 * specified namespace; otherwise it is put in
+				 * the global namespace. */
+    Tcl_ObjCmdProc *proc,	/* Object-based function to associate with
 				 * name. */
-    ClientData clientData;	/* Arbitrary value to pass to object
-    				 * procedure. */
-    Tcl_CmdDeleteProc *deleteProc;
-				/* If not NULL, gives a procedure to call
-				 * when this command is deleted. */
+    ClientData clientData,	/* Arbitrary value to pass to object
+    				 * function. */
+    Tcl_CmdDeleteProc *deleteProc)
+				/* If not NULL, gives a function to call when
+				 * this command is deleted. */
 {
     Interp *iPtr = (Interp *) interp;
     ImportRef *oldRefPtr = NULL;
     Namespace *nsPtr, *dummy1, *dummy2;
     Command *cmdPtr, *refCmdPtr;
     Tcl_HashEntry *hPtr;
-    CONST char *tail;
-    int new;
+    const char *tail;
+    int isNew;
     ImportedCmdData *dataPtr;
 
     if (iPtr->flags & DELETED) {
 	/*
-	 * The interpreter is being deleted.  Don't create any new
-	 * commands;  it's not safe to muck with the interpreter anymore.
+	 * The interpreter is being deleted. Don't create any new commands;
+	 * it's not safe to muck with the interpreter anymore.
 	 */
 
 	return (Tcl_Command) NULL;
     }
 
     /*
-     * Determine where the command should reside. If its name contains 
-     * namespace qualifiers, we put it in the specified namespace; 
-     * otherwise, we always put it in the global namespace.
+     * Determine where the command should reside. If its name contains
+     * namespace qualifiers, we put it in the specified namespace; otherwise,
+     * we always put it in the global namespace.
      */
 
     if (strstr(cmdName, "::") != NULL) {
-       TclGetNamespaceForQualName(interp, cmdName, (Namespace *) NULL,
-           CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail);
-       if ((nsPtr == NULL) || (tail == NULL)) {
+	TclGetNamespaceForQualName(interp, cmdName, NULL,
+		TCL_CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail);
+	if ((nsPtr == NULL) || (tail == NULL)) {
 	    return (Tcl_Command) NULL;
 	}
     } else {
@@ -1769,45 +2021,54 @@ Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc)
 	tail = cmdName;
     }
 
-    hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new);
-    if (!new) {
-	cmdPtr = (Command *) Tcl_GetHashValue(hPtr);
+    hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &isNew);
+    TclInvalidateNsPath(nsPtr);
+    if (!isNew) {
+	cmdPtr = Tcl_GetHashValue(hPtr);
 
 	/*
 	 * Command already exists. If its object-based Tcl_ObjCmdProc is
 	 * TclInvokeStringCommand, we just set its Tcl_ObjCmdProc to the
-	 * argument "proc". Otherwise, we delete the old command. 
+	 * argument "proc". Otherwise, we delete the old command.
 	 */
 
 	if (cmdPtr->objProc == TclInvokeStringCommand) {
 	    cmdPtr->objProc = proc;
 	    cmdPtr->objClientData = clientData;
-            cmdPtr->deleteProc = deleteProc;
-            cmdPtr->deleteData = clientData;
+	    cmdPtr->deleteProc = deleteProc;
+	    cmdPtr->deleteData = clientData;
 	    return (Tcl_Command) cmdPtr;
 	}
 
 	/*
-	 * Otherwise, we delete the old command.  Be careful to preserve
-	 * any existing import links so we can restore them down below.
-	 * That way, you can redefine a command and its import status
-	 * will remain intact.
+	 * Otherwise, we delete the old command. Be careful to preserve any
+	 * existing import links so we can restore them down below. That way,
+	 * you can redefine a command and its import status will remain
+	 * intact.
 	 */
 
 	oldRefPtr = cmdPtr->importRefPtr;
 	cmdPtr->importRefPtr = NULL;
 
 	Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr);
-	hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new);
-	if (!new) {
+	hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &isNew);
+	if (!isNew) {
 	    /*
-	     * If the deletion callback recreated the command, just throw
-	     * away the new command (if we try to delete it again, we
-	     * could get stuck in an infinite loop).
+	     * If the deletion callback recreated the command, just throw away
+	     * the new command (if we try to delete it again, we could get
+	     * stuck in an infinite loop).
 	     */
 
-	     ckfree((char *) Tcl_GetHashValue(hPtr));
+	     ckfree(Tcl_GetHashValue(hPtr));
 	}
+    } else {
+	/*
+	 * The list of command exported from the namespace might have changed.
+	 * However, we do not need to recompute this just yet; next time we
+	 * need the info will be soon enough.
+	 */
+
+	TclInvalidateNsCmdLookup(nsPtr);
     }
     cmdPtr = (Command *) ckalloc(sizeof(Command));
     Tcl_SetHashValue(hPtr, cmdPtr);
@@ -1815,11 +2076,11 @@ Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc)
     cmdPtr->nsPtr = nsPtr;
     cmdPtr->refCount = 1;
     cmdPtr->cmdEpoch = 0;
-    cmdPtr->compileProc = (CompileProc *) NULL;
+    cmdPtr->compileProc = NULL;
     cmdPtr->objProc = proc;
     cmdPtr->objClientData = clientData;
     cmdPtr->proc = TclInvokeObjectCommand;
-    cmdPtr->clientData = (ClientData) cmdPtr;
+    cmdPtr->clientData = cmdPtr;
     cmdPtr->deleteProc = deleteProc;
     cmdPtr->deleteData = clientData;
     cmdPtr->flags = 0;
@@ -1827,27 +2088,27 @@ Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc)
     cmdPtr->tracePtr = NULL;
 
     /*
-     * Plug in any existing import references found above.  Be sure
-     * to update all of these references to point to the new command.
+     * Plug in any existing import references found above. Be sure to update
+     * all of these references to point to the new command.
      */
 
     if (oldRefPtr != NULL) {
 	cmdPtr->importRefPtr = oldRefPtr;
 	while (oldRefPtr != NULL) {
 	    refCmdPtr = oldRefPtr->importedCmdPtr;
-	    dataPtr = (ImportedCmdData*)refCmdPtr->objClientData;
+	    dataPtr = refCmdPtr->objClientData;
 	    dataPtr->realCmdPtr = cmdPtr;
 	    oldRefPtr = oldRefPtr->nextPtr;
 	}
     }
-    
+
     /*
      * We just created a command, so in its namespace and all of its parent
      * namespaces, it may shadow global commands with the same name. If any
      * shadowed commands are found, invalidate all cached command references
      * in the affected namespaces.
      */
-    
+
     TclResetShadowedCmdRefs(interp, cmdPtr);
     return (Tcl_Command) cmdPtr;
 }
@@ -1858,10 +2119,10 @@ Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc)
  * TclInvokeStringCommand --
  *
  *	"Wrapper" Tcl_ObjCmdProc used to call an existing string-based
- *	Tcl_CmdProc if no object-based procedure exists for a command. A
- *	pointer to this procedure is stored as the Tcl_ObjCmdProc in a
- *	Command structure. It simply turns around and calls the string
- *	Tcl_CmdProc in the Command structure.
+ *	Tcl_CmdProc if no object-based function exists for a command. A
+ *	pointer to this function is stored as the Tcl_ObjCmdProc in a Command
+ *	structure. It simply turns around and calls the string Tcl_CmdProc in
+ *	the Command structure.
  *
  * Results:
  *	A standard Tcl object result value.
@@ -1874,35 +2135,16 @@ Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc)
  */
 
 int
-TclInvokeStringCommand(clientData, interp, objc, objv)
-    ClientData clientData;	/* Points to command's Command structure. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    register int objc;		/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TclInvokeStringCommand(
+    ClientData clientData,	/* Points to command's Command structure. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    register int objc,		/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register Command *cmdPtr = (Command *) clientData;
-    register int i;
-    int result;
-
-    /*
-     * This procedure generates an argv array for the string arguments. It
-     * starts out with stack-allocated space but uses dynamically-allocated
-     * storage if needed.
-     */
-
-#define NUM_ARGS 20
-    CONST char *(argStorage[NUM_ARGS]);
-    CONST char **argv = argStorage;
-
-    /*
-     * Create the string argument array "argv". Make sure argv is large
-     * enough to hold the objc arguments plus 1 extra for the zero
-     * end-of-argv word.
-     */
-
-    if ((objc + 1) > NUM_ARGS) {
-	argv = (CONST char **) ckalloc((unsigned)(objc + 1) * sizeof(char *));
-    }
+    Command *cmdPtr = clientData;
+    int i, result;
+    const char **argv = (const char **)
+	    TclStackAlloc(interp, (unsigned)(objc + 1) * sizeof(char *));
 
     for (i = 0;  i < objc;  i++) {
 	argv[i] = Tcl_GetString(objv[i]);
@@ -1915,15 +2157,8 @@ TclInvokeStringCommand(clientData, interp, objc, objv)
 
     result = (*cmdPtr->proc)(cmdPtr->clientData, interp, objc, argv);
 
-    /*
-     * Free the argv array if malloc'ed storage was used.
-     */
-
-    if (argv != argStorage) {
-	ckfree((char *) argv);
-    }
+    TclStackFree(interp, (void *) argv);
     return result;
-#undef NUM_ARGS
 }
 
 /*
@@ -1932,10 +2167,10 @@ TclInvokeStringCommand(clientData, interp, objc, objv)
  * TclInvokeObjectCommand --
  *
  *	"Wrapper" Tcl_CmdProc used to call an existing object-based
- *	Tcl_ObjCmdProc if no string-based procedure exists for a command.
- *	A pointer to this procedure is stored as the Tcl_CmdProc in a
- *	Command structure. It simply turns around and calls the object
- *	Tcl_ObjCmdProc in the Command structure.
+ *	Tcl_ObjCmdProc if no string-based function exists for a command. A
+ *	pointer to this function is stored as the Tcl_CmdProc in a Command
+ *	structure. It simply turns around and calls the object Tcl_ObjCmdProc
+ *	in the Command structure.
  *
  * Results:
  *	A standard Tcl string result value.
@@ -1948,42 +2183,21 @@ TclInvokeStringCommand(clientData, interp, objc, objv)
  */
 
 int
-TclInvokeObjectCommand(clientData, interp, argc, argv)
-    ClientData clientData;	/* Points to command's Command structure. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int argc;			/* Number of arguments. */
-    register CONST char **argv;	/* Argument strings. */
+TclInvokeObjectCommand(
+    ClientData clientData,	/* Points to command's Command structure. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    register const char **argv)	/* Argument strings. */
 {
     Command *cmdPtr = (Command *) clientData;
-    register Tcl_Obj *objPtr;
-    register int i;
-    int length, result;
-
-    /*
-     * This procedure generates an objv array for object arguments that hold
-     * the argv strings. It starts out with stack-allocated space but uses
-     * dynamically-allocated storage if needed.
-     */
-
-#define NUM_ARGS 20
-    Tcl_Obj *(argStorage[NUM_ARGS]);
-    register Tcl_Obj **objv = argStorage;
-
-    /*
-     * Create the object argument array "objv". Make sure objv is large
-     * enough to hold the objc arguments plus 1 extra for the zero
-     * end-of-objv word.
-     */
-
-    if (argc > NUM_ARGS) {
-	objv = (Tcl_Obj **)
-	    ckalloc((unsigned)(argc * sizeof(Tcl_Obj *)));
-    }
+    Tcl_Obj *objPtr;
+    int i, length, result;
+    Tcl_Obj **objv = (Tcl_Obj **)
+	    TclStackAlloc(interp, (unsigned)(argc * sizeof(Tcl_Obj *)));
 
     for (i = 0;  i < argc;  i++) {
 	length = strlen(argv[i]);
-	TclNewObj(objPtr);
-	TclInitStringRep(objPtr, argv[i], length);
+	TclNewStringObj(objPtr, argv[i], length);
 	Tcl_IncrRefCount(objPtr);
 	objv[i] = objPtr;
     }
@@ -1995,27 +2209,23 @@ TclInvokeObjectCommand(clientData, interp, argc, argv)
     result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp, argc, objv);
 
     /*
-     * Move the interpreter's object result to the string result, 
-     * then reset the object result.
+     * Move the interpreter's object result to the string result, then reset
+     * the object result.
      */
 
-    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	    TCL_VOLATILE);
-    
+    (void) Tcl_GetStringResult(interp);
+
     /*
-     * Decrement the ref counts for the argument objects created above,
-     * then free the objv array if malloc'ed storage was used.
+     * Decrement the ref counts for the argument objects created above, then
+     * free the objv array if malloc'ed storage was used.
      */
 
     for (i = 0;  i < argc;  i++) {
 	objPtr = objv[i];
 	Tcl_DecrRefCount(objPtr);
     }
-    if (objv != argStorage) {
-	ckfree((char *) objv);
-    }
+    TclStackFree(interp, objv);
     return result;
-#undef NUM_ARGS
 }
 
 /*
@@ -2023,65 +2233,64 @@ TclInvokeObjectCommand(clientData, interp, argc, argv)
  *
  * TclRenameCommand --
  *
- *      Called to give an existing Tcl command a different name. Both the
- *      old command name and the new command name can have "::" namespace
- *      qualifiers. If the new command has a different namespace context,
- *      the command will be moved to that namespace and will execute in
- *	the context of that new namespace.
+ *	Called to give an existing Tcl command a different name. Both the old
+ *	command name and the new command name can have "::" namespace
+ *	qualifiers. If the new command has a different namespace context, the
+ *	command will be moved to that namespace and will execute in the
+ *	context of that new namespace.
  *
- *      If the new command name is NULL or the null string, the command is
- *      deleted.
+ *	If the new command name is NULL or the null string, the command is
+ *	deleted.
  *
  * Results:
- *      Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *      If anything goes wrong, an error message is returned in the
- *      interpreter's result object.
+ *	If anything goes wrong, an error message is returned in the
+ *	interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclRenameCommand(interp, oldName, newName)
-    Tcl_Interp *interp;                 /* Current interpreter. */
-    char *oldName;                      /* Existing command name. */
-    char *newName;                      /* New command name. */
+TclRenameCommand(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    const char *oldName,	/* Existing command name. */
+    const char *newName)	/* New command name. */
 {
     Interp *iPtr = (Interp *) interp;
-    CONST char *newTail;
+    const char *newTail;
     Namespace *cmdNsPtr, *newNsPtr, *dummy1, *dummy2;
     Tcl_Command cmd;
     Command *cmdPtr;
     Tcl_HashEntry *hPtr, *oldHPtr;
-    int new, result;
-    Tcl_Obj* oldFullName;
+    int isNew, result;
+    Tcl_Obj *oldFullName;
     Tcl_DString newFullName;
 
     /*
-     * Find the existing command. An error is returned if cmdName can't
-     * be found.
+     * Find the existing command. An error is returned if cmdName can't be
+     * found.
      */
 
-    cmd = Tcl_FindCommand(interp, oldName, (Tcl_Namespace *) NULL,
-	/*flags*/ 0);
+    cmd = Tcl_FindCommand(interp, oldName, NULL, /*flags*/ 0);
     cmdPtr = (Command *) cmd;
     if (cmdPtr == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "can't ",
-                ((newName == NULL)||(*newName == '\0'))? "delete":"rename",
-                " \"", oldName, "\": command doesn't exist", (char *) NULL);
+	Tcl_AppendResult(interp, "can't ",
+		((newName == NULL)||(*newName == '\0'))? "delete":"rename",
+		" \"", oldName, "\": command doesn't exist", NULL);
 	return TCL_ERROR;
     }
     cmdNsPtr = cmdPtr->nsPtr;
     oldFullName = Tcl_NewObj();
-    Tcl_IncrRefCount( oldFullName );
-    Tcl_GetCommandFullName( interp, cmd, oldFullName );
+    Tcl_IncrRefCount(oldFullName);
+    Tcl_GetCommandFullName(interp, cmd, oldFullName);
 
     /*
      * If the new command name is NULL or empty, delete the command. Do this
      * with Tcl_DeleteCommandFromToken, since we already have the command.
      */
-    
+
     if ((newName == NULL) || (*newName == '\0')) {
 	Tcl_DeleteCommandFromToken(interp, cmd);
 	result = TCL_OK;
@@ -2089,101 +2298,106 @@ TclRenameCommand(interp, oldName, newName)
     }
 
     /*
-     * Make sure that the destination command does not already exist.
-     * The rename operation is like creating a command, so we should
-     * automatically create the containing namespaces just like
-     * Tcl_CreateCommand would.
+     * Make sure that the destination command does not already exist. The
+     * rename operation is like creating a command, so we should automatically
+     * create the containing namespaces just like Tcl_CreateCommand would.
      */
 
-    TclGetNamespaceForQualName(interp, newName, (Namespace *) NULL,
-       CREATE_NS_IF_UNKNOWN, &newNsPtr, &dummy1, &dummy2, &newTail);
+    TclGetNamespaceForQualName(interp, newName, NULL,
+	    TCL_CREATE_NS_IF_UNKNOWN, &newNsPtr, &dummy1, &dummy2, &newTail);
 
     if ((newNsPtr == NULL) || (newTail == NULL)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		 "can't rename to \"", newName, "\": bad command name",
-    	    	 (char *) NULL);
+	Tcl_AppendResult(interp, "can't rename to \"", newName,
+		"\": bad command name", NULL);
 	result = TCL_ERROR;
 	goto done;
     }
     if (Tcl_FindHashEntry(&newNsPtr->cmdTable, newTail) != NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		 "can't rename to \"", newName,
-		 "\": command already exists", (char *) NULL);
+	Tcl_AppendResult(interp, "can't rename to \"", newName,
+		 "\": command already exists", NULL);
 	result = TCL_ERROR;
 	goto done;
     }
 
     /*
-     * Warning: any changes done in the code here are likely
-     * to be needed in Tcl_HideCommand() code too.
-     * (until the common parts are extracted out)     --dl
+     * Warning: any changes done in the code here are likely to be needed in
+     * Tcl_HideCommand() code too (until the common parts are extracted out).
+     * - dl
      */
 
     /*
-     * Put the command in the new namespace so we can check for an alias
-     * loop. Since we are adding a new command to a namespace, we must
-     * handle any shadowing of the global commands that this might create.
+     * Put the command in the new namespace so we can check for an alias loop.
+     * Since we are adding a new command to a namespace, we must handle any
+     * shadowing of the global commands that this might create.
      */
-    
+
     oldHPtr = cmdPtr->hPtr;
-    hPtr = Tcl_CreateHashEntry(&newNsPtr->cmdTable, newTail, &new);
-    Tcl_SetHashValue(hPtr, (ClientData) cmdPtr);
+    hPtr = Tcl_CreateHashEntry(&newNsPtr->cmdTable, newTail, &isNew);
+    Tcl_SetHashValue(hPtr, cmdPtr);
     cmdPtr->hPtr = hPtr;
     cmdPtr->nsPtr = newNsPtr;
     TclResetShadowedCmdRefs(interp, cmdPtr);
 
     /*
-     * Now check for an alias loop. If we detect one, put everything back
-     * the way it was and report the error.
+     * Now check for an alias loop. If we detect one, put everything back the
+     * way it was and report the error.
      */
 
     result = TclPreventAliasLoop(interp, interp, (Tcl_Command) cmdPtr);
     if (result != TCL_OK) {
-        Tcl_DeleteHashEntry(cmdPtr->hPtr);
-        cmdPtr->hPtr = oldHPtr;
-        cmdPtr->nsPtr = cmdNsPtr;
+	Tcl_DeleteHashEntry(cmdPtr->hPtr);
+	cmdPtr->hPtr = oldHPtr;
+	cmdPtr->nsPtr = cmdNsPtr;
 	goto done;
     }
 
     /*
-     * Script for rename traces can delete the command "oldName".
-     * Therefore increment the reference count for cmdPtr so that
-     * it's Command structure is freed only towards the end of this
-     * function by calling TclCleanupCommand.
+     * The list of command exported from the namespace might have changed.
+     * However, we do not need to recompute this just yet; next time we need
+     * the info will be soon enough. These might refer to the same variable,
+     * but that's no big deal.
+     */
+
+    TclInvalidateNsCmdLookup(cmdNsPtr);
+    TclInvalidateNsCmdLookup(cmdPtr->nsPtr);
+
+    /*
+     * Script for rename traces can delete the command "oldName". Therefore
+     * increment the reference count for cmdPtr so that it's Command structure
+     * is freed only towards the end of this function by calling
+     * TclCleanupCommand.
      *
-     * The trace procedure needs to get a fully qualified name for
-     * old and new commands [Tcl bug #651271], or else there's no way
-     * for the trace procedure to get the namespace from which the old
-     * command is being renamed!
+     * The trace function needs to get a fully qualified name for old and new
+     * commands [Tcl bug #651271], or else there's no way for the trace
+     * function to get the namespace from which the old command is being
+     * renamed!
      */
 
-    Tcl_DStringInit( &newFullName );
-    Tcl_DStringAppend( &newFullName, newNsPtr->fullName, -1 );
-    if ( newNsPtr != iPtr->globalNsPtr ) {
-	Tcl_DStringAppend( &newFullName, "::", 2 );
+    Tcl_DStringInit(&newFullName);
+    Tcl_DStringAppend(&newFullName, newNsPtr->fullName, -1);
+    if (newNsPtr != iPtr->globalNsPtr) {
+	Tcl_DStringAppend(&newFullName, "::", 2);
     }
-    Tcl_DStringAppend( &newFullName, newTail, -1 );
+    Tcl_DStringAppend(&newFullName, newTail, -1);
     cmdPtr->refCount++;
-    CallCommandTraces( iPtr, cmdPtr,
-		       Tcl_GetString( oldFullName ),
-		       Tcl_DStringValue( &newFullName ),
-		       TCL_TRACE_RENAME);
-    Tcl_DStringFree( &newFullName );
+    CallCommandTraces(iPtr, cmdPtr, Tcl_GetString(oldFullName),
+	    Tcl_DStringValue(&newFullName), TCL_TRACE_RENAME);
+    Tcl_DStringFree(&newFullName);
 
     /*
-     * The new command name is okay, so remove the command from its
-     * current namespace. This is like deleting the command, so bump
-     * the cmdEpoch to invalidate any cached references to the command.
+     * The new command name is okay, so remove the command from its current
+     * namespace. This is like deleting the command, so bump the cmdEpoch to
+     * invalidate any cached references to the command.
      */
-    
+
     Tcl_DeleteHashEntry(oldHPtr);
     cmdPtr->cmdEpoch++;
 
     /*
-     * If the command being renamed has a compile procedure, increment the
-     * interpreter's compileEpoch to invalidate its compiled code. This
-     * makes sure that we don't later try to execute old code compiled for
-     * the now-renamed command.
+     * If the command being renamed has a compile function, increment the
+     * interpreter's compileEpoch to invalidate its compiled code. This makes
+     * sure that we don't later try to execute old code compiled for the
+     * now-renamed command.
      */
 
     if (cmdPtr->compileProc != NULL) {
@@ -2191,14 +2405,15 @@ TclRenameCommand(interp, oldName, newName)
     }
 
     /*
-     * Now free the Command structure, if the "oldName" command has
-     * been deleted by invocation of rename traces.
+     * Now free the Command structure, if the "oldName" command has been
+     * deleted by invocation of rename traces.
      */
-    TclCleanupCommand(cmdPtr);
+
+    TclCleanupCommandMacro(cmdPtr);
     result = TCL_OK;
 
-    done:
-    TclDecrRefCount( oldFullName );
+  done:
+    TclDecrRefCount(oldFullName);
     return result;
 }
 
@@ -2207,16 +2422,15 @@ TclRenameCommand(interp, oldName, newName)
  *
  * Tcl_SetCommandInfo --
  *
- *	Modifies various information about a Tcl command. Note that
- *	this procedure will not change a command's namespace; use
- *	Tcl_RenameCommand to do that. Also, the isNativeObjectProc
- *	member of *infoPtr is ignored.
+ *	Modifies various information about a Tcl command. Note that this
+ *	function will not change a command's namespace; use TclRenameCommand
+ *	to do that. Also, the isNativeObjectProc member of *infoPtr is
+ *	ignored.
  *
  * Results:
- *	If cmdName exists in interp, then the information at *infoPtr
- *	is stored with the command in place of the current information
- *	and 1 is returned. If the command doesn't exist then 0 is
- *	returned. 
+ *	If cmdName exists in interp, then the information at *infoPtr is
+ *	stored with the command in place of the current information and 1 is
+ *	returned. If the command doesn't exist then 0 is returned.
  *
  * Side effects:
  *	None.
@@ -2225,20 +2439,17 @@ TclRenameCommand(interp, oldName, newName)
  */
 
 int
-Tcl_SetCommandInfo(interp, cmdName, infoPtr)
-    Tcl_Interp *interp;			/* Interpreter in which to look
-					 * for command. */
-    CONST char *cmdName;		/* Name of desired command. */
-    CONST Tcl_CmdInfo *infoPtr;		/* Where to find information
-					 * to store in the command. */
+Tcl_SetCommandInfo(
+    Tcl_Interp *interp,		/* Interpreter in which to look for
+				 * command. */
+    const char *cmdName,	/* Name of desired command. */
+    const Tcl_CmdInfo *infoPtr)	/* Where to find information to store in the
+				 * command. */
 {
     Tcl_Command cmd;
 
-    cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL,
-            /*flags*/ 0);
-
-    return Tcl_SetCommandInfoFromToken( cmd, infoPtr );
-
+    cmd = Tcl_FindCommand(interp, cmdName, NULL, /*flags*/ 0);
+    return Tcl_SetCommandInfoFromToken(cmd, infoPtr);
 }
 
 /*
@@ -2246,16 +2457,15 @@ Tcl_SetCommandInfo(interp, cmdName, infoPtr)
  *
  * Tcl_SetCommandInfoFromToken --
  *
- *	Modifies various information about a Tcl command. Note that
- *	this procedure will not change a command's namespace; use
- *	Tcl_RenameCommand to do that. Also, the isNativeObjectProc
- *	member of *infoPtr is ignored.
+ *	Modifies various information about a Tcl command. Note that this
+ *	function will not change a command's namespace; use TclRenameCommand
+ *	to do that. Also, the isNativeObjectProc member of *infoPtr is
+ *	ignored.
  *
  * Results:
- *	If cmdName exists in interp, then the information at *infoPtr
- *	is stored with the command in place of the current information
- *	and 1 is returned. If the command doesn't exist then 0 is
- *	returned. 
+ *	If cmdName exists in interp, then the information at *infoPtr is
+ *	stored with the command in place of the current information and 1 is
+ *	returned. If the command doesn't exist then 0 is returned.
  *
  * Side effects:
  *	None.
@@ -2264,11 +2474,11 @@ Tcl_SetCommandInfo(interp, cmdName, infoPtr)
  */
 
 int
-Tcl_SetCommandInfoFromToken( cmd, infoPtr )
-    Tcl_Command cmd;
-    CONST Tcl_CmdInfo* infoPtr;
+Tcl_SetCommandInfoFromToken(
+    Tcl_Command cmd,
+    const Tcl_CmdInfo *infoPtr)
 {
-    Command* cmdPtr;		/* Internal representation of the command */
+    Command *cmdPtr;		/* Internal representation of the command */
 
     if (cmd == (Tcl_Command) NULL) {
 	return 0;
@@ -2277,13 +2487,13 @@ Tcl_SetCommandInfoFromToken( cmd, infoPtr )
     /*
      * The isNativeObjectProc and nsPtr members of *infoPtr are ignored.
      */
-    
+
     cmdPtr = (Command *) cmd;
     cmdPtr->proc = infoPtr->proc;
     cmdPtr->clientData = infoPtr->clientData;
-    if (infoPtr->objProc == (Tcl_ObjCmdProc *) NULL) {
+    if (infoPtr->objProc == NULL) {
 	cmdPtr->objProc = TclInvokeStringCommand;
-	cmdPtr->objClientData = (ClientData) cmdPtr;
+	cmdPtr->objClientData = cmdPtr;
     } else {
 	cmdPtr->objProc = infoPtr->objProc;
 	cmdPtr->objClientData = infoPtr->objClientData;
@@ -2301,10 +2511,9 @@ Tcl_SetCommandInfoFromToken( cmd, infoPtr )
  *	Returns various information about a Tcl command.
  *
  * Results:
- *	If cmdName exists in interp, then *infoPtr is modified to
- *	hold information about cmdName and 1 is returned.  If the
- *	command doesn't exist then 0 is returned and *infoPtr isn't
- *	modified.
+ *	If cmdName exists in interp, then *infoPtr is modified to hold
+ *	information about cmdName and 1 is returned. If the command doesn't
+ *	exist then 0 is returned and *infoPtr isn't modified.
  *
  * Side effects:
  *	None.
@@ -2313,20 +2522,17 @@ Tcl_SetCommandInfoFromToken( cmd, infoPtr )
  */
 
 int
-Tcl_GetCommandInfo(interp, cmdName, infoPtr)
-    Tcl_Interp *interp;			/* Interpreter in which to look
-					 * for command. */
-    CONST char *cmdName;		/* Name of desired command. */
-    Tcl_CmdInfo *infoPtr;		/* Where to store information about
-					 * command. */
+Tcl_GetCommandInfo(
+    Tcl_Interp *interp,		/* Interpreter in which to look for
+				 * command. */
+    const char *cmdName,	/* Name of desired command. */
+    Tcl_CmdInfo *infoPtr)	/* Where to store information about
+				 * command. */
 {
     Tcl_Command cmd;
 
-    cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL,
-            /*flags*/ 0);
-
-    return Tcl_GetCommandInfoFromToken( cmd, infoPtr );
-
+    cmd = Tcl_FindCommand(interp, cmdName, NULL, /*flags*/ 0);
+    return Tcl_GetCommandInfoFromToken(cmd, infoPtr);
 }
 
 /*
@@ -2337,9 +2543,9 @@ Tcl_GetCommandInfo(interp, cmdName, infoPtr)
  *	Returns various information about a Tcl command.
  *
  * Results:
- *	Copies information from the command identified by 'cmd' into
- *	a caller-supplied structure and returns 1.  If the 'cmd' is
- *	NULL, leaves the structure untouched and returns 0.
+ *	Copies information from the command identified by 'cmd' into a
+ *	caller-supplied structure and returns 1. If the 'cmd' is NULL, leaves
+ *	the structure untouched and returns 0.
  *
  * Side effects:
  *	None.
@@ -2348,14 +2554,13 @@ Tcl_GetCommandInfo(interp, cmdName, infoPtr)
  */
 
 int
-Tcl_GetCommandInfoFromToken( cmd, infoPtr )
-    Tcl_Command cmd;
-    Tcl_CmdInfo* infoPtr;
+Tcl_GetCommandInfoFromToken(
+    Tcl_Command cmd,
+    Tcl_CmdInfo *infoPtr)
 {
+    Command *cmdPtr;		/* Internal representation of the command */
 
-    Command* cmdPtr;		/* Internal representation of the command */
-
-    if ( cmd == (Tcl_Command) NULL ) {
+    if (cmd == (Tcl_Command) NULL) {
 	return 0;
     }
 
@@ -2376,7 +2581,6 @@ Tcl_GetCommandInfoFromToken( cmd, infoPtr )
     infoPtr->namespacePtr = (Tcl_Namespace *) cmdPtr->nsPtr;
 
     return 1;
-
 }
 
 /*
@@ -2384,9 +2588,8 @@ Tcl_GetCommandInfoFromToken( cmd, infoPtr )
  *
  * Tcl_GetCommandName --
  *
- *	Given a token returned by Tcl_CreateCommand, this procedure
- *	returns the current name of the command (which may have changed
- *	due to renaming).
+ *	Given a token returned by Tcl_CreateCommand, this function returns the
+ *	current name of the command (which may have changed due to renaming).
  *
  * Results:
  *	The return value is the name of the given command.
@@ -2397,25 +2600,25 @@ Tcl_GetCommandInfoFromToken( cmd, infoPtr )
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_GetCommandName(interp, command)
-    Tcl_Interp *interp;		/* Interpreter containing the command. */
-    Tcl_Command command;	/* Token for command returned by a previous
-				 * call to Tcl_CreateCommand. The command
-				 * must not have been deleted. */
+const char *
+Tcl_GetCommandName(
+    Tcl_Interp *interp,		/* Interpreter containing the command. */
+    Tcl_Command command)	/* Token for command returned by a previous
+				 * call to Tcl_CreateCommand. The command must
+				 * not have been deleted. */
 {
     Command *cmdPtr = (Command *) command;
 
     if ((cmdPtr == NULL) || (cmdPtr->hPtr == NULL)) {
-
 	/*
 	 * This should only happen if command was "created" after the
-	 * interpreter began to be deleted, so there isn't really any
-	 * command. Just return an empty string.
+	 * interpreter began to be deleted, so there isn't really any command.
+	 * Just return an empty string.
 	 */
 
 	return "";
     }
+
     return Tcl_GetHashKey(cmdPtr->hPtr->tablePtr, cmdPtr->hPtr);
 }
 
@@ -2424,28 +2627,28 @@ Tcl_GetCommandName(interp, command)
  *
  * Tcl_GetCommandFullName --
  *
- *	Given a token returned by, e.g., Tcl_CreateCommand or
- *	Tcl_FindCommand, this procedure appends to an object the command's
- *	full name, qualified by a sequence of parent namespace names. The
- *	command's fully-qualified name may have changed due to renaming.
+ *	Given a token returned by, e.g., Tcl_CreateCommand or Tcl_FindCommand,
+ *	this function appends to an object the command's full name, qualified
+ *	by a sequence of parent namespace names. The command's fully-qualified
+ *	name may have changed due to renaming.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	The command's fully-qualified name is appended to the string
- *	representation of objPtr. 
+ *	representation of objPtr.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_GetCommandFullName(interp, command, objPtr)
-    Tcl_Interp *interp;		/* Interpreter containing the command. */
-    Tcl_Command command;	/* Token for command returned by a previous
-				 * call to Tcl_CreateCommand. The command
-				 * must not have been deleted. */
-    Tcl_Obj *objPtr;		/* Points to the object onto which the
+Tcl_GetCommandFullName(
+    Tcl_Interp *interp,		/* Interpreter containing the command. */
+    Tcl_Command command,	/* Token for command returned by a previous
+				 * call to Tcl_CreateCommand. The command must
+				 * not have been deleted. */
+    Tcl_Obj *objPtr)		/* Points to the object onto which the
 				 * command's full name is appended. */
 
 {
@@ -2468,7 +2671,7 @@ Tcl_GetCommandFullName(interp, command, objPtr)
 	if (cmdPtr->hPtr != NULL) {
 	    name = Tcl_GetHashKey(cmdPtr->hPtr->tablePtr, cmdPtr->hPtr);
 	    Tcl_AppendToObj(objPtr, name, -1);
-	} 
+	}
     }
 }
 
@@ -2480,30 +2683,28 @@ Tcl_GetCommandFullName(interp, command, objPtr)
  *	Remove the given command from the given interpreter.
  *
  * Results:
- *	0 is returned if the command was deleted successfully.
- *	-1 is returned if there didn't exist a command by that name.
+ *	0 is returned if the command was deleted successfully. -1 is returned
+ *	if there didn't exist a command by that name.
  *
  * Side effects:
- *	cmdName will no longer be recognized as a valid command for
- *	interp.
+ *	cmdName will no longer be recognized as a valid command for interp.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_DeleteCommand(interp, cmdName)
-    Tcl_Interp *interp;		/* Token for command interpreter (returned
-				 * by a previous Tcl_CreateInterp call). */
-    CONST char *cmdName;	/* Name of command to remove. */
+Tcl_DeleteCommand(
+    Tcl_Interp *interp,		/* Token for command interpreter (returned by
+				 * a previous Tcl_CreateInterp call). */
+    const char *cmdName)	/* Name of command to remove. */
 {
     Tcl_Command cmd;
 
     /*
-     *  Find the desired command and delete it.
+     * Find the desired command and delete it.
      */
 
-    cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL,
-            /*flags*/ 0);
+    cmd = Tcl_FindCommand(interp, cmdName, NULL, /*flags*/ 0);
     if (cmd == (Tcl_Command) NULL) {
 	return -1;
     }
@@ -2515,26 +2716,26 @@ Tcl_DeleteCommand(interp, cmdName)
  *
  * Tcl_DeleteCommandFromToken --
  *
- *	Removes the given command from the given interpreter. This procedure
- *	resembles Tcl_DeleteCommand, but takes a Tcl_Command token instead
- *	of a command name for efficiency.
+ *	Removes the given command from the given interpreter. This function
+ *	resembles Tcl_DeleteCommand, but takes a Tcl_Command token instead of
+ *	a command name for efficiency.
  *
  * Results:
- *	0 is returned if the command was deleted successfully.
- *	-1 is returned if there didn't exist a command by that name.
+ *	0 is returned if the command was deleted successfully. -1 is returned
+ *	if there didn't exist a command by that name.
  *
  * Side effects:
- *	The command specified by "cmd" will no longer be recognized as a
- *	valid command for "interp".
+ *	The command specified by "cmd" will no longer be recognized as a valid
+ *	command for "interp".
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_DeleteCommandFromToken(interp, cmd)
-    Tcl_Interp *interp;		/* Token for command interpreter returned by
-				 * a previous call to Tcl_CreateInterp. */
-    Tcl_Command cmd;            /* Token for command to delete. */
+Tcl_DeleteCommandFromToken(
+    Tcl_Interp *interp,		/* Token for command interpreter returned by a
+				 * previous call to Tcl_CreateInterp. */
+    Tcl_Command cmd)		/* Token for command to delete. */
 {
     Interp *iPtr = (Interp *) interp;
     Command *cmdPtr = (Command *) cmd;
@@ -2542,73 +2743,90 @@ Tcl_DeleteCommandFromToken(interp, cmd)
     Tcl_Command importCmd;
 
     /*
-     * The code here is tricky.  We can't delete the hash table entry
-     * before invoking the deletion callback because there are cases
-     * where the deletion callback needs to invoke the command (e.g.
-     * object systems such as OTcl). However, this means that the
-     * callback could try to delete or rename the command. The deleted
-     * flag allows us to detect these cases and skip nested deletes.
+     * Bump the command epoch counter. This will invalidate all cached
+     * references that point to this command.
+     */
+
+    cmdPtr->cmdEpoch++;
+
+    /*
+     * The code here is tricky. We can't delete the hash table entry before
+     * invoking the deletion callback because there are cases where the
+     * deletion callback needs to invoke the command (e.g. object systems such
+     * as OTcl). However, this means that the callback could try to delete or
+     * rename the command. The deleted flag allows us to detect these cases
+     * and skip nested deletes.
      */
 
     if (cmdPtr->flags & CMD_IS_DELETED) {
 	/*
-	 * Another deletion is already in progress.  Remove the hash
-	 * table entry now, but don't invoke a callback or free the
-	 * command structure.
+	 * Another deletion is already in progress. Remove the hash table
+	 * entry now, but don't invoke a callback or free the command
+	 * structure. Take care to only remove the hash entry if it has not
+	 * already been removed; otherwise if we manage to hit this function
+	 * three times, everything goes up in smoke. [Bug 1220058]
 	 */
 
-        Tcl_DeleteHashEntry(cmdPtr->hPtr);
-	cmdPtr->hPtr = NULL;
+	if (cmdPtr->hPtr != NULL) {
+	    Tcl_DeleteHashEntry(cmdPtr->hPtr);
+	    cmdPtr->hPtr = NULL;
+	}
 	return 0;
     }
 
-    /* 
-     * We must delete this command, even though both traces and
-     * delete procs may try to avoid this (renaming the command etc).
-     * Also traces and delete procs may try to delete the command
-     * themsevles.  This flag declares that a delete is in progress
-     * and that recursive deletes should be ignored.
-     */
-    cmdPtr->flags |= CMD_IS_DELETED;
-
     /*
-     * Bump the command epoch counter. This will invalidate all cached
-     * references that point to this command.
+     * We must delete this command, even though both traces and delete procs
+     * may try to avoid this (renaming the command etc). Also traces and
+     * delete procs may try to delete the command themsevles. This flag
+     * declares that a delete is in progress and that recursive deletes should
+     * be ignored.
      */
-    
-    cmdPtr->cmdEpoch++;
+
+    cmdPtr->flags |= CMD_IS_DELETED;
 
     /*
-     * Call trace procedures for the command being deleted. Then delete
-     * its traces. 
+     * Call trace functions for the command being deleted. Then delete its
+     * traces.
      */
 
     if (cmdPtr->tracePtr != NULL) {
 	CommandTrace *tracePtr;
 	CallCommandTraces(iPtr,cmdPtr,NULL,NULL,TCL_TRACE_DELETE);
-	/* Now delete these traces */
+
+	/*
+	 * Now delete these traces.
+	 */
+
 	tracePtr = cmdPtr->tracePtr;
 	while (tracePtr != NULL) {
 	    CommandTrace *nextPtr = tracePtr->nextPtr;
 	    if ((--tracePtr->refCount) <= 0) {
-		ckfree((char*)tracePtr);
+		ckfree((char *) tracePtr);
 	    }
 	    tracePtr = nextPtr;
 	}
 	cmdPtr->tracePtr = NULL;
     }
-    
+
     /*
-     * If the command being deleted has a compile procedure, increment the
-     * interpreter's compileEpoch to invalidate its compiled code. This
-     * makes sure that we don't later try to execute old code compiled with
-     * command-specific (i.e., inline) bytecodes for the now-deleted
-     * command. This field is checked in Tcl_EvalObj and ObjInterpProc, and
-     * code whose compilation epoch doesn't match is recompiled.
+     * The list of command exported from the namespace might have changed.
+     * However, we do not need to recompute this just yet; next time we need
+     * the info will be soon enough.
+     */
+
+    TclInvalidateNsCmdLookup(cmdPtr->nsPtr);
+
+    /*
+     * If the command being deleted has a compile function, increment the
+     * interpreter's compileEpoch to invalidate its compiled code. This makes
+     * sure that we don't later try to execute old code compiled with
+     * command-specific (i.e., inline) bytecodes for the now-deleted command.
+     * This field is checked in Tcl_EvalObj and ObjInterpProc, and code whose
+     * compilation epoch doesn't match is recompiled.
      */
 
     if (cmdPtr->compileProc != NULL) {
-        iPtr->compileEpoch++;
+	iPtr->compileEpoch++;
     }
 
     if (cmdPtr->deleteProc != NULL) {
@@ -2618,15 +2836,15 @@ Tcl_DeleteCommandFromToken(interp, cmd)
 	 * data will be a pointer to a ImportedCmdData structure describing
 	 * the "real" command that this imported command refers to.
 	 */
-	
+
 	/*
 	 * If you are getting a crash during the call to deleteProc and
-	 * cmdPtr->deleteProc is a pointer to the function free(), the
-	 * most likely cause is that your extension allocated memory
-	 * for the clientData argument to Tcl_CreateObjCommand() with
-	 * the ckalloc() macro and you are now trying to deallocate
-	 * this memory with free() instead of ckfree(). You should
-	 * pass a pointer to your own method that calls ckfree().
+	 * cmdPtr->deleteProc is a pointer to the function free(), the most
+	 * likely cause is that your extension allocated memory for the
+	 * clientData argument to Tcl_CreateObjCommand() with the ckalloc()
+	 * macro and you are now trying to deallocate this memory with free()
+	 * instead of ckfree(). You should pass a pointer to your own method
+	 * that calls ckfree().
 	 */
 
 	(*cmdPtr->deleteProc)(cmdPtr->deleteData);
@@ -2639,78 +2857,77 @@ Tcl_DeleteCommandFromToken(interp, cmd)
      */
 
     for (refPtr = cmdPtr->importRefPtr;  refPtr != NULL;
-            refPtr = nextRefPtr) {
+	    refPtr = nextRefPtr) {
 	nextRefPtr = refPtr->nextPtr;
 	importCmd = (Tcl_Command) refPtr->importedCmdPtr;
-        Tcl_DeleteCommandFromToken(interp, importCmd);
+	Tcl_DeleteCommandFromToken(interp, importCmd);
     }
 
     /*
-     * Don't use hPtr to delete the hash entry here, because it's
-     * possible that the deletion callback renamed the command.
-     * Instead, use cmdPtr->hptr, and make sure that no-one else
-     * has already deleted the hash entry.
+     * Don't use hPtr to delete the hash entry here, because it's possible
+     * that the deletion callback renamed the command. Instead, use
+     * cmdPtr->hptr, and make sure that no-one else has already deleted the
+     * hash entry.
      */
 
     if (cmdPtr->hPtr != NULL) {
 	Tcl_DeleteHashEntry(cmdPtr->hPtr);
+	cmdPtr->hPtr = NULL;
     }
 
     /*
      * Mark the Command structure as no longer valid. This allows
      * TclExecuteByteCode to recognize when a Command has logically been
      * deleted and a pointer to this Command structure cached in a CmdName
-     * object is invalid. TclExecuteByteCode will look up the command again
-     * in the interpreter's command hashtable.
+     * object is invalid. TclExecuteByteCode will look up the command again in
+     * the interpreter's command hashtable.
      */
 
     cmdPtr->objProc = NULL;
 
     /*
-     * Now free the Command structure, unless there is another reference to
-     * it from a CmdName Tcl object in some ByteCode code sequence. In that
-     * case, delay the cleanup until all references are either discarded
-     * (when a ByteCode is freed) or replaced by a new reference (when a
-     * cached CmdName Command reference is found to be invalid and
-     * TclExecuteByteCode looks up the command in the command hashtable).
+     * Now free the Command structure, unless there is another reference to it
+     * from a CmdName Tcl object in some ByteCode code sequence. In that case,
+     * delay the cleanup until all references are either discarded (when a
+     * ByteCode is freed) or replaced by a new reference (when a cached
+     * CmdName Command reference is found to be invalid and TclExecuteByteCode
+     * looks up the command in the command hashtable).
      */
-    
-    TclCleanupCommand(cmdPtr);
+
+    TclCleanupCommandMacro(cmdPtr);
     return 0;
 }
 
 static char *
-CallCommandTraces(iPtr, cmdPtr, oldName, newName, flags)
-    Interp *iPtr;		/* Interpreter containing command. */
-    Command *cmdPtr;		/* Command whose traces are to be
-				 * invoked. */
-    CONST char *oldName;        /* Command's old name, or NULL if we
-                                 * must get the name from cmdPtr */
-    CONST char *newName;        /* Command's new name, or NULL if
-                                 * the command is not being renamed */
-    int flags;			/* Flags indicating the type of traces
-				 * to trigger, either TCL_TRACE_DELETE
-				 * or TCL_TRACE_RENAME. */
+CallCommandTraces(
+    Interp *iPtr,		/* Interpreter containing command. */
+    Command *cmdPtr,		/* Command whose traces are to be invoked. */
+    const char *oldName,	/* Command's old name, or NULL if we must get
+				 * the name from cmdPtr */
+    const char *newName,	/* Command's new name, or NULL if the command
+				 * is not being renamed */
+    int flags)			/* Flags indicating the type of traces to
+				 * trigger, either TCL_TRACE_DELETE or
+				 * TCL_TRACE_RENAME. */
 {
     register CommandTrace *tracePtr;
     ActiveCommandTrace active;
     char *result;
     Tcl_Obj *oldNamePtr = NULL;
-    int mask = (TCL_TRACE_DELETE | TCL_TRACE_RENAME);	/* Safety */
-
-    flags &= mask;
+    Tcl_InterpState state = NULL;
 
     if (cmdPtr->flags & CMD_TRACE_ACTIVE) {
-	/* 
-	 * While a rename trace is active, we will not process any more
-	 * rename traces; while a delete trace is active we will never
-	 * reach here -- because Tcl_DeleteCommandFromToken checks for the
-	 * condition (cmdPtr->flags & CMD_IS_DELETED) and returns immediately
-	 * when a command deletion is in progress.  For all other traces,
-	 * delete traces will not be invoked but a call to TraceCommandProc
-	 * will ensure that tracePtr->clientData is freed whenever the
-	 * command "oldName" is deleted.
+	/*
+	 * While a rename trace is active, we will not process any more rename
+	 * traces; while a delete trace is active we will never reach here -
+	 * because Tcl_DeleteCommandFromToken checks for the condition
+	 * (cmdPtr->flags & CMD_IS_DELETED) and returns immediately when a
+	 * command deletion is in progress. For all other traces, delete
+	 * traces will not be invoked but a call to TraceCommandProc will
+	 * ensure that tracePtr->clientData is freed whenever the command
+	 * "oldName" is deleted.
 	 */
+
 	if (cmdPtr->flags & TCL_TRACE_RENAME) {
 	    flags &= ~TCL_TRACE_RENAME;
 	}
@@ -2720,7 +2937,7 @@ CallCommandTraces(iPtr, cmdPtr, oldName, newName, flags)
     }
     cmdPtr->flags |= CMD_TRACE_ACTIVE;
     cmdPtr->refCount++;
-    
+
     result = NULL;
     active.nextPtr = iPtr->activeCmdTracePtr;
     active.reverseScan = 0;
@@ -2730,37 +2947,41 @@ CallCommandTraces(iPtr, cmdPtr, oldName, newName, flags)
 	flags |= TCL_TRACE_DESTROYED;
     }
     active.cmdPtr = cmdPtr;
-    
-    Tcl_Preserve((ClientData) iPtr);
-    
-    for (tracePtr = cmdPtr->tracePtr; tracePtr != NULL;
-	 tracePtr = active.nextTracePtr) {
-	int traceFlags = (tracePtr->flags & mask);
 
+    Tcl_Preserve(iPtr);
+
+    for (tracePtr = cmdPtr->tracePtr; tracePtr != NULL;
+	    tracePtr = active.nextTracePtr) {
 	active.nextTracePtr = tracePtr->nextPtr;
-	if (!(traceFlags & flags)) {
+	if (!(tracePtr->flags & flags)) {
 	    continue;
 	}
-	cmdPtr->flags |= traceFlags;
+	cmdPtr->flags |= tracePtr->flags;
 	if (oldName == NULL) {
 	    TclNewObj(oldNamePtr);
 	    Tcl_IncrRefCount(oldNamePtr);
-	    Tcl_GetCommandFullName((Tcl_Interp *) iPtr, 
-	            (Tcl_Command) cmdPtr, oldNamePtr);
+	    Tcl_GetCommandFullName((Tcl_Interp *) iPtr,
+		    (Tcl_Command) cmdPtr, oldNamePtr);
 	    oldName = TclGetString(oldNamePtr);
 	}
 	tracePtr->refCount++;
+	if (state == NULL) {
+	    state = Tcl_SaveInterpState((Tcl_Interp *) iPtr, TCL_OK);
+	}
 	(*tracePtr->traceProc)(tracePtr->clientData,
 		(Tcl_Interp *) iPtr, oldName, newName, flags);
-	cmdPtr->flags &= ~traceFlags;
+	cmdPtr->flags &= ~tracePtr->flags;
 	if ((--tracePtr->refCount) <= 0) {
-	    ckfree((char*)tracePtr);
+	    ckfree((char *) tracePtr);
 	}
     }
 
+    if (state) {
+	Tcl_RestoreInterpState((Tcl_Interp *) iPtr, state);
+    }
+
     /*
-     * If a new object was created to hold the full oldName,
-     * free it now.
+     * If a new object was created to hold the full oldName, free it now.
      */
 
     if (oldNamePtr != NULL) {
@@ -2768,26 +2989,55 @@ CallCommandTraces(iPtr, cmdPtr, oldName, newName, flags)
     }
 
     /*
-     * Restore the variable's flags, remove the record of our active
-     * traces, and then return.
+     * Restore the variable's flags, remove the record of our active traces,
+     * and then return.
      */
 
     cmdPtr->flags &= ~CMD_TRACE_ACTIVE;
     cmdPtr->refCount--;
     iPtr->activeCmdTracePtr = active.nextPtr;
-    Tcl_Release((ClientData) iPtr);
+    Tcl_Release(iPtr);
     return result;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetCommandSource --
+ *
+ *	This function returns a Tcl_Obj with the full source string for the
+ *	command. This insures that traces get a correct NUL-terminated command
+ *	string.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+GetCommandSource(
+    Interp *iPtr,
+    const char *command,
+    int numChars,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    if (!command) {
+	return Tcl_NewListObj(objc, objv);
+    }
+    if (command == (char *) -1) {
+	command = TclGetSrcInfoForCmd(iPtr, &numChars);
+    }
+    return Tcl_NewStringObj(command, numChars);
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * TclCleanupCommand --
  *
- *	This procedure frees up a Command structure unless it is still
+ *	This function frees up a Command structure unless it is still
  *	referenced from an interpreter's command hashtable or from a CmdName
  *	Tcl object representing the name of a command in a ByteCode
- *	instruction sequence. 
+ *	instruction sequence.
  *
  * Results:
  *	None.
@@ -2801,8 +3051,8 @@ CallCommandTraces(iPtr, cmdPtr, oldName, newName, flags)
  */
 
 void
-TclCleanupCommand(cmdPtr)
-    register Command *cmdPtr;	/* Points to the Command structure to
+TclCleanupCommand(
+    register Command *cmdPtr)	/* Points to the Command structure to
 				 * be freed. */
 {
     cmdPtr->refCount--;
@@ -2816,18 +3066,17 @@ TclCleanupCommand(cmdPtr)
  *
  * Tcl_CreateMathFunc --
  *
- *	Creates a new math function for expressions in a given
- *	interpreter.
+ *	Creates a new math function for expressions in a given interpreter.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The function defined by "name" is created or redefined. If the
- *	function already exists then its definition is replaced; this
- *	includes the builtin functions. Redefining a builtin function forces
- *	all existing code to be invalidated since that code may be compiled
- *	using an instruction specific to the replaced function. In addition,
+ *	The Tcl function defined by "name" is created or redefined. If the
+ *	function already exists then its definition is replaced; this includes
+ *	the builtin functions. Redefining a builtin function forces all
+ *	existing code to be invalidated since that code may be compiled using
+ *	an instruction specific to the replaced function. In addition,
  *	redefioning a non-builtin function will force existing code to be
  *	invalidated if the number of arguments has changed.
  *
@@ -2835,65 +3084,205 @@ TclCleanupCommand(cmdPtr)
  */
 
 void
-Tcl_CreateMathFunc(interp, name, numArgs, argTypes, proc, clientData)
-    Tcl_Interp *interp;			/* Interpreter in which function is
-					 * to be available. */
-    CONST char *name;			/* Name of function (e.g. "sin"). */
-    int numArgs;			/* Nnumber of arguments required by
-					 * function. */
-    Tcl_ValueType *argTypes;		/* Array of types acceptable for
-					 * each argument. */
-    Tcl_MathProc *proc;			/* Procedure that implements the
-					 * math function. */
-    ClientData clientData;		/* Additional value to pass to the
-					 * function. */
+Tcl_CreateMathFunc(
+    Tcl_Interp *interp,		/* Interpreter in which function is to be
+				 * available. */
+    const char *name,		/* Name of function (e.g. "sin"). */
+    int numArgs,		/* Nnumber of arguments required by
+				 * function. */
+    Tcl_ValueType *argTypes,	/* Array of types acceptable for each
+				 * argument. */
+    Tcl_MathProc *proc,		/* C function that implements the math
+				 * function. */
+    ClientData clientData)	/* Additional value to pass to the
+				 * function. */
 {
-    Interp *iPtr = (Interp *) interp;
-    Tcl_HashEntry *hPtr;
-    MathFunc *mathFuncPtr;
-    int new, i;
+    Tcl_DString bigName;
+    OldMathFuncData *data = (OldMathFuncData *)
+	    ckalloc(sizeof(OldMathFuncData));
+
+    data->proc = proc;
+    data->numArgs = numArgs;
+    data->argTypes = (Tcl_ValueType *)
+	    ckalloc(numArgs * sizeof(Tcl_ValueType));
+    memcpy(data->argTypes, argTypes, numArgs * sizeof(Tcl_ValueType));
+    data->clientData = clientData;
+
+    Tcl_DStringInit(&bigName);
+    Tcl_DStringAppend(&bigName, "::tcl::mathfunc::", -1);
+    Tcl_DStringAppend(&bigName, name, -1);
+
+    Tcl_CreateObjCommand(interp, Tcl_DStringValue(&bigName),
+	    OldMathFuncProc, data, OldMathFuncDeleteProc);
+    Tcl_DStringFree(&bigName);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * OldMathFuncProc --
+ *
+ *	Dispatch to a math function created with Tcl_CreateMathFunc
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	Whatever the math function does.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    hPtr = Tcl_CreateHashEntry(&iPtr->mathFuncTable, name, &new);
-    if (new) {
-	Tcl_SetHashValue(hPtr, ckalloc(sizeof(MathFunc)));
+static int
+OldMathFuncProc(
+    ClientData clientData,	/* Ponter to OldMathFuncData describing the
+				 * function being called */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int objc,			/* Actual parameter count */
+    Tcl_Obj *const *objv)	/* Parameter vector */
+{
+    Tcl_Obj *valuePtr;
+    OldMathFuncData *dataPtr = clientData;
+    Tcl_Value funcResult, *args;
+    int result;
+    int j, k;
+    double d;
+
+    /*
+     * Check argument count.
+     */
+
+    if (objc != dataPtr->numArgs + 1) {
+	MathFuncWrongNumArgs(interp, dataPtr->numArgs+1, objc, objv);
+	return TCL_ERROR;
     }
-    mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr);
 
-    if (!new) {	
-	if (mathFuncPtr->builtinFuncIndex >= 0) {
-	    /*
-	     * We are redefining a builtin math function. Invalidate the
-             * interpreter's existing code by incrementing its
-             * compileEpoch member. This field is checked in Tcl_EvalObj
-             * and ObjInterpProc, and code whose compilation epoch doesn't
-             * match is recompiled. Newly compiled code will no longer
-             * treat the function as builtin.
-	     */
+    /*
+     * Convert arguments from Tcl_Obj's to Tcl_Value's.
+     */
 
-	    iPtr->compileEpoch++;
-	} else {
+    args = (Tcl_Value *) ckalloc(dataPtr->numArgs * sizeof(Tcl_Value));
+    for (j = 1, k = 0; j < objc; ++j, ++k) {
+
+	/* TODO: Convert to TclGetNumberFromObj() ? */
+	valuePtr = objv[j];
+	result = Tcl_GetDoubleFromObj(NULL, valuePtr, &d);
+#ifdef ACCEPT_NAN
+	if ((result != TCL_OK) && (valuePtr->typePtr == &tclDoubleType)) {
+	    d = valuePtr->internalRep.doubleValue;
+	    result = TCL_OK;
+	}
+#endif
+	if (result != TCL_OK) {
 	    /*
-	     * A non-builtin function is being redefined. We must invalidate
-             * existing code if the number of arguments has changed. This
-	     * is because existing code was compiled assuming that number.
+	     * We have a non-numeric argument.
 	     */
 
-	    if (numArgs != mathFuncPtr->numArgs) {
-		iPtr->compileEpoch++;
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		    "argument to math function didn't have numeric value",-1));
+	    TclCheckBadOctal(interp, Tcl_GetString(valuePtr));
+	    ckfree((char *)args);
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Copy the object's numeric value to the argument record, converting
+	 * it if necessary.
+	 *
+	 * NOTE: no bignum support; use the new mathfunc interface for that.
+	 */
+
+	args[k].type = dataPtr->argTypes[k];
+	switch (args[k].type) {
+	case TCL_EITHER:
+	    if (Tcl_GetLongFromObj(NULL, valuePtr, &(args[k].intValue))
+		    == TCL_OK) {
+		args[k].type = TCL_INT;
+		break;
+	    }
+	    if (Tcl_GetWideIntFromObj(interp, valuePtr, &(args[k].wideValue))
+		    == TCL_OK) {
+		args[k].type = TCL_WIDE_INT;
+		break;
+	    }
+	    args[k].type = TCL_DOUBLE;
+	    /* FALLTHROUGH */
+
+	case TCL_DOUBLE:
+	    args[k].doubleValue = d;
+	    break;
+	case TCL_INT:
+	    if (ExprIntFunc(NULL, interp, 2, &(objv[j-1])) != TCL_OK) {
+		ckfree((char *)args);
+		return TCL_ERROR;
+	    }
+	    valuePtr = Tcl_GetObjResult(interp);
+	    Tcl_GetLongFromObj(NULL, valuePtr, &(args[k].intValue));
+	    Tcl_ResetResult(interp);
+	    break;
+	case TCL_WIDE_INT:
+	    if (ExprWideFunc(NULL, interp, 2, &(objv[j-1])) != TCL_OK) {
+		ckfree((char *)args);
+		return TCL_ERROR;
 	    }
+	    valuePtr = Tcl_GetObjResult(interp);
+	    Tcl_GetWideIntFromObj(NULL, valuePtr, &(args[k].wideValue));
+	    Tcl_ResetResult(interp);
+	    break;
 	}
     }
-    
-    mathFuncPtr->builtinFuncIndex = -1;	/* can't be a builtin function */
-    if (numArgs > MAX_MATH_ARGS) {
-	numArgs = MAX_MATH_ARGS;
+
+    /*
+     * Call the function.
+     */
+
+    errno = 0;
+    result = (*dataPtr->proc)(dataPtr->clientData, interp, args, &funcResult);
+    ckfree((char *)args);
+    if (result != TCL_OK) {
+	return result;
     }
-    mathFuncPtr->numArgs = numArgs;
-    for (i = 0;  i < numArgs;  i++) {
-	mathFuncPtr->argTypes[i] = argTypes[i];
+
+    /*
+     * Return the result of the call.
+     */
+
+    if (funcResult.type == TCL_INT) {
+	TclNewLongObj(valuePtr, funcResult.intValue);
+    } else if (funcResult.type == TCL_WIDE_INT) {
+	valuePtr = Tcl_NewWideIntObj(funcResult.wideValue);
+    } else {
+	return CheckDoubleResult(interp, funcResult.doubleValue);
     }
-    mathFuncPtr->proc = proc;
-    mathFuncPtr->clientData = clientData;
+    Tcl_SetObjResult(interp, valuePtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * OldMathFuncDeleteProc --
+ *
+ *	Cleans up after deleting a math function registered with
+ *	Tcl_CreateMathFunc
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Frees allocated memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+OldMathFuncDeleteProc(
+     ClientData clientData)
+{
+    OldMathFuncData *dataPtr = clientData;
+
+    ckfree((void *) dataPtr->argTypes);
+    ckfree((void *) dataPtr);
 }
 
 /*
@@ -2905,64 +3294,80 @@ Tcl_CreateMathFunc(interp, name, numArgs, argTypes, proc, clientData)
  *	interpreter.
  *
  * Results:
- *	TCL_OK if it succeeds, TCL_ERROR else (leaving an error message
- *	in the interpreter result if that happens.)
+ *	TCL_OK if it succeeds, TCL_ERROR else (leaving an error message in the
+ *	interpreter result if that happens.)
  *
  * Side effects:
- *	If this function succeeds, the variables pointed to by the
- *	numArgsPtr and argTypePtr arguments will be updated to detail the
- *	arguments allowed by the function.  The variable pointed to by the
- *	procPtr argument will be set to NULL if the function is a builtin
- *	function, and will be set to the address of the C function used to
- *	implement the math function otherwise (in which case the variable
- *	pointed to by the clientDataPtr argument will also be updated.)
+ *	If this function succeeds, the variables pointed to by the numArgsPtr
+ *	and argTypePtr arguments will be updated to detail the arguments
+ *	allowed by the function. The variable pointed to by the procPtr
+ *	argument will be set to NULL if the function is a builtin function,
+ *	and will be set to the address of the C function used to implement the
+ *	math function otherwise (in which case the variable pointed to by the
+ *	clientDataPtr argument will also be updated.)
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetMathFuncInfo(interp, name, numArgsPtr, argTypesPtr, procPtr,
-		    clientDataPtr)
-    Tcl_Interp *interp;
-    CONST char *name;
-    int *numArgsPtr;
-    Tcl_ValueType **argTypesPtr;
-    Tcl_MathProc **procPtr;
-    ClientData *clientDataPtr;
+Tcl_GetMathFuncInfo(
+    Tcl_Interp *interp,
+    const char *name,
+    int *numArgsPtr,
+    Tcl_ValueType **argTypesPtr,
+    Tcl_MathProc **procPtr,
+    ClientData *clientDataPtr)
 {
-    Interp *iPtr = (Interp *) interp;
-    Tcl_HashEntry *hPtr;
-    MathFunc *mathFuncPtr;
-    Tcl_ValueType *argTypes;
-    int i,numArgs;
+    Tcl_Obj *cmdNameObj;
+    Command *cmdPtr;
 
-    hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, name);
-    if (hPtr == NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "math function \"", name, "\" not known in this interpreter",
-		(char *) NULL);
+    /*
+     * Get the command that implements the math function.
+     */
+
+    TclNewLiteralStringObj(cmdNameObj, "tcl::mathfunc::");
+    Tcl_AppendToObj(cmdNameObj, name, -1);
+    Tcl_IncrRefCount(cmdNameObj);
+    cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, cmdNameObj);
+    Tcl_DecrRefCount(cmdNameObj);
+
+    /*
+     * Report unknown functions.
+     */
+
+    if (cmdPtr == NULL) {
+	Tcl_Obj *message;
+
+	TclNewLiteralStringObj(message, "unknown math function \"");
+	Tcl_AppendToObj(message, name, -1);
+	Tcl_AppendToObj(message, "\"", 1);
+	Tcl_SetObjResult(interp, message);
+	*numArgsPtr = -1;
+	*argTypesPtr = NULL;
+	*procPtr = NULL;
+	*clientDataPtr = NULL;
 	return TCL_ERROR;
     }
-    mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr);
 
-    *numArgsPtr = numArgs = mathFuncPtr->numArgs;
-    if (numArgs == 0) {
-	/* Avoid doing zero-sized allocs... */
-	numArgs = 1;
-    }
-    *argTypesPtr = argTypes =
-	(Tcl_ValueType *)ckalloc(numArgs * sizeof(Tcl_ValueType));
-    for (i = 0; i < mathFuncPtr->numArgs; i++) {
-	argTypes[i] = mathFuncPtr->argTypes[i];
-    }
+    /*
+     * Retrieve function info for user defined functions; return dummy
+     * information for builtins.
+     */
+
+    if (cmdPtr->objProc == &OldMathFuncProc) {
+	OldMathFuncData *dataPtr = cmdPtr->clientData;
 
-    if (mathFuncPtr->builtinFuncIndex == -1) {
-	*procPtr = (Tcl_MathProc *) NULL;
+	*procPtr = dataPtr->proc;
+	*numArgsPtr = dataPtr->numArgs;
+	*argTypesPtr = dataPtr->argTypes;
+	*clientDataPtr = dataPtr->clientData;
     } else {
-	*procPtr = mathFuncPtr->proc;
-	*clientDataPtr = mathFuncPtr->clientData;
+	*procPtr = NULL;
+	*numArgsPtr = -1;
+	*argTypesPtr = NULL;
+	*procPtr = NULL;
+	*clientDataPtr = NULL;
     }
-
     return TCL_OK;
 }
 
@@ -2975,9 +3380,9 @@ Tcl_GetMathFuncInfo(interp, name, numArgsPtr, argTypesPtr, procPtr,
  *	interpreter.
  *
  * Results:
- *	A pointer to a Tcl_Obj structure with a reference count of zero,
- *	or NULL in the case of an error (in which case a suitable error
- *	message will be left in the interpreter result.)
+ *	A pointer to a Tcl_Obj structure with a reference count of zero, or
+ *	NULL in the case of an error (in which case a suitable error message
+ *	will be left in the interpreter result.)
  *
  * Side effects:
  *	None.
@@ -2986,28 +3391,33 @@ Tcl_GetMathFuncInfo(interp, name, numArgsPtr, argTypesPtr, procPtr,
  */
 
 Tcl_Obj *
-Tcl_ListMathFuncs(interp, pattern)
-    Tcl_Interp *interp;
-    CONST char *pattern;
+Tcl_ListMathFuncs(
+    Tcl_Interp *interp,
+    const char *pattern)
 {
-    Interp *iPtr = (Interp *) interp;
-    Tcl_Obj *resultList = Tcl_NewObj();
-    register Tcl_HashEntry *hPtr;
-    Tcl_HashSearch hSearch;
-    CONST char *name;
-
-    for (hPtr = Tcl_FirstHashEntry(&iPtr->mathFuncTable, &hSearch);
-	 hPtr != NULL; hPtr = Tcl_NextHashEntry(&hSearch)) {
-        name = Tcl_GetHashKey(&iPtr->mathFuncTable, hPtr);
-	if ((pattern == NULL || Tcl_StringMatch(name, pattern)) &&
-	    /* I don't expect this to fail, but... */
-	    Tcl_ListObjAppendElement(interp, resultList,
-				     Tcl_NewStringObj(name,-1)) != TCL_OK) {
-	    Tcl_DecrRefCount(resultList);
-	    return NULL;
-	}
+    Tcl_Obj *script = Tcl_NewStringObj("::info functions ", -1);
+    Tcl_Obj *result;
+    Tcl_InterpState state;
+
+    if (pattern) {
+	Tcl_Obj *patternObj = Tcl_NewStringObj(pattern, -1);
+	Tcl_Obj *arg = Tcl_NewListObj(1, &patternObj);
+
+	Tcl_AppendObjToObj(script, arg);
+	Tcl_DecrRefCount(arg);	/* Should tear down patternObj too */
     }
-    return resultList;
+
+    state = Tcl_SaveInterpState(interp, TCL_OK);
+    Tcl_IncrRefCount(script);
+    if (TCL_OK == Tcl_EvalObjEx(interp, script, 0)) {
+	result = Tcl_DuplicateObj(Tcl_GetObjResult(interp));
+    } else {
+	result = Tcl_NewObj();
+    }
+    Tcl_DecrRefCount(script);
+    Tcl_RestoreInterpState(interp, state);
+
+    return result;
 }
 
 /*
@@ -3015,13 +3425,12 @@ Tcl_ListMathFuncs(interp, pattern)
  *
  * TclInterpReady --
  *
- *	Check if an interpreter is ready to eval commands or scripts, 
- *      i.e., if it was not deleted and if the nesting level is not 
- *      too high.
+ *	Check if an interpreter is ready to eval commands or scripts, i.e., if
+ *	it was not deleted and if the nesting level is not too high.
  *
  * Results:
- *	The return value is TCL_OK if it the interpreter is ready, 
- *      TCL_ERROR otherwise.
+ *	The return value is TCL_OK if it the interpreter is ready, TCL_ERROR
+ *	otherwise.
  *
  * Side effects:
  *	The interpreters object and string results are cleared.
@@ -3029,15 +3438,18 @@ Tcl_ListMathFuncs(interp, pattern)
  *----------------------------------------------------------------------
  */
 
-int 
-TclInterpReady(interp)
-    Tcl_Interp *interp;
+int
+TclInterpReady(
+    Tcl_Interp *interp)
 {
+#if !defined(TCL_NO_STACK_CHECK)
+    int localInt; /* used for checking the stack */
+#endif
     register Interp *iPtr = (Interp *) interp;
 
     /*
-     * Reset both the interpreter's string and object results and clear 
-     * out any previous error information. 
+     * Reset both the interpreter's string and object results and clear out
+     * any previous error information.
      */
 
     Tcl_ResetResult(interp);
@@ -3045,46 +3457,53 @@ TclInterpReady(interp)
     /*
      * If the interpreter has been deleted, return an error.
      */
-    
+
     if (iPtr->flags & DELETED) {
 	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "attempt to call eval in deleted interpreter", -1);
-	Tcl_SetErrorCode(interp, "CORE", "IDELETE",
-	        "attempt to call eval in deleted interpreter",
-		(char *) NULL);
+	Tcl_AppendResult(interp,
+		"attempt to call eval in deleted interpreter", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "IDELETE",
+		"attempt to call eval in deleted interpreter", NULL);
 	return TCL_ERROR;
     }
 
     /*
-     * Check depth of nested calls to Tcl_Eval:  if this gets too large,
-     * it's probably because of an infinite loop somewhere.
+     * Check depth of nested calls to Tcl_Eval: if this gets too large, it's
+     * probably because of an infinite loop somewhere.
      */
 
-    if (((iPtr->numLevels) > iPtr->maxNestingDepth) 
-	    || (TclpCheckStackSpace() == 0)) {
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		"too many nested evaluations (infinite loop?)", -1); 
-	return TCL_ERROR;
+    if (((iPtr->numLevels) <= iPtr->maxNestingDepth)
+	    && CheckCStack(iPtr, &localInt)) {
+	return TCL_OK;
     }
 
-    return TCL_OK;
+    if (!CheckCStack(iPtr, &localInt)) {
+	Tcl_AppendResult(interp,
+		"out of stack space (infinite loop?)", NULL);
+    } else {
+	Tcl_AppendResult(interp,
+		"too many nested evaluations (infinite loop?)", NULL);
+    }
+    return TCL_ERROR;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclEvalObjvInternal --
+ * TclEvalObjvInternal
+ *
+ *	This function evaluates a Tcl command that has already been parsed
+ *	into words, with one Tcl_Obj holding each word. The caller is
+ *	responsible for managing the iPtr->numLevels.
  *
- *	This procedure evaluates a Tcl command that has already been
- *	parsed into words, with one Tcl_Obj holding each word. The caller
- *      is responsible for managing the iPtr->numLevels.
+ *      TclEvalObjvInternal is the backend for Tcl_EvalObjv, the bytecode
+ *      engine also calls it directly.
  *
  * Results:
- *	The return value is a standard Tcl completion code such as
- *	TCL_OK or TCL_ERROR.  A result or error message is left in
- *	interp's result.  If an error occurs, this procedure does
- *	NOT add any information to the errorInfo variable.
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR. A result or error message is left in interp's result. If an
+ *	error occurs, this function does NOT add any information to the
+ *	errorInfo variable.
  *
  * Side effects:
  *	Depends on the command.
@@ -3093,39 +3512,39 @@ TclInterpReady(interp)
  */
 
 int
-TclEvalObjvInternal(interp, objc, objv, command, length, flags)
-    Tcl_Interp *interp;		/* Interpreter in which to evaluate the
-				 * command.  Also used for error
-				 * reporting. */
-    int objc;			/* Number of words in command. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to objects that are
+TclEvalObjvInternal(
+    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
+				 * command. Also used for error reporting. */
+    int objc,			/* Number of words in command. */
+    Tcl_Obj *const objv[],	/* An array of pointers to objects that are
 				 * the words that make up the command. */
-    CONST char *command;	/* Points to the beginning of the string
-				 * representation of the command; this
-				 * is used for traces.  If the string
-				 * representation of the command is
-				 * unknown, an empty string should be
-				 * supplied. If it is NULL, no traces will
-				 * be called. */
-    int length;			/* Number of bytes in command; if -1, all
+    const char *command,	/* Points to the beginning of the string
+				 * representation of the command; this is used
+				 * for traces. NULL if the string
+				 * representation of the command is unknown is
+				 * to be generated from (objc,objv), -1 if it
+				 * is to be generated from bytecode
+				 * source. This is only needed the traces. */
+    int length,			/* Number of bytes in command; if -1, all
 				 * characters up to the first null byte are
 				 * used. */
-    int flags;			/* Collection of OR-ed bits that control
-				 * the evaluation of the script.  Only
+    int flags)			/* Collection of OR-ed bits that control the
+				 * evaluation of the script. Only
 				 * TCL_EVAL_GLOBAL and TCL_EVAL_INVOKE are
 				 * currently supported. */
-
 {
     Command *cmdPtr;
     Interp *iPtr = (Interp *) interp;
     Tcl_Obj **newObjv;
     int i;
-    CallFrame *savedVarFramePtr;	/* Saves old copy of iPtr->varFramePtr
-					 * in case TCL_EVAL_GLOBAL was set. */
+    CallFrame *savedVarFramePtr = NULL;
+    CallFrame *varFramePtr = iPtr->varFramePtr;
     int code = TCL_OK;
     int traceCode = TCL_OK;
-    int checkTraces = 1;
+    int checkTraces = 1, traced;
     Namespace *savedNsPtr = NULL;
+    Namespace *lookupNsPtr = iPtr->lookupNsPtr;
+    Tcl_Obj *commandPtr = NULL;
 
     if (TclInterpReady(interp) == TCL_ERROR) {
 	return TCL_ERROR;
@@ -3135,93 +3554,107 @@ TclEvalObjvInternal(interp, objc, objv, command, length, flags)
 	return TCL_OK;
     }
 
+    /*
+     * If any execution traces rename or delete the current command, we may
+     * need (at most) two passes here.
+     */
+
+  reparseBecauseOfTraces:
 
     /*
-     * If any execution traces rename or delete the current command,
-     * we may need (at most) two passes here.
+     * Configure evaluation context to match the requested flags.
      */
 
-    savedVarFramePtr = iPtr->varFramePtr;
-    while (1) {
-    
-	/* Configure evaluation context to match the requested flags */
-	if (flags & TCL_EVAL_GLOBAL) {
-	    iPtr->varFramePtr = NULL;
-	} else if ((flags & TCL_EVAL_INVOKE) && iPtr->varFramePtr) {
-	    savedNsPtr = iPtr->varFramePtr->nsPtr;
-	    iPtr->varFramePtr->nsPtr = iPtr->globalNsPtr;
-	}
-	
-        /*
-         * Find the procedure to execute this command. If there isn't one,
-         * then see if there is a command "unknown".  If so, create a new
-         * word array with "unknown" as the first word and the original
-         * command words as arguments.  Then call ourselves recursively
-         * to execute it.
-         */
-        cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, objv[0]);
-        if (cmdPtr == NULL) {
-	    newObjv = (Tcl_Obj **) ckalloc((unsigned)
-		((objc + 1) * sizeof (Tcl_Obj *)));
-	    for (i = objc-1; i >= 0; i--) {
-	        newObjv[i+1] = objv[i];
-	    }
-	    newObjv[0] = Tcl_NewStringObj("::unknown", -1);
-	    Tcl_IncrRefCount(newObjv[0]);
-	    cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, newObjv[0]);
-	    if (cmdPtr == NULL) {
-	        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "invalid command name \"", Tcl_GetString(objv[0]), "\"",
-		    (char *) NULL);
-	        code = TCL_ERROR;
+    if (flags) {
+	if (flags & TCL_EVAL_INVOKE) {
+	    savedNsPtr = varFramePtr->nsPtr;
+	    if (lookupNsPtr) {
+		varFramePtr->nsPtr = lookupNsPtr;
+		iPtr->lookupNsPtr = NULL;
 	    } else {
-	        iPtr->numLevels++;
-	        code = TclEvalObjvInternal(interp, objc+1, newObjv,
-			command, length, 0);
-	        iPtr->numLevels--;
+		varFramePtr->nsPtr = iPtr->globalNsPtr;
 	    }
-	    Tcl_DecrRefCount(newObjv[0]);
-	    ckfree((char *) newObjv);
-	    if (savedNsPtr) {
-		iPtr->varFramePtr->nsPtr = savedNsPtr;
+	} else if ((flags & TCL_EVAL_GLOBAL)
+		&& (varFramePtr != iPtr->rootFramePtr) && !savedVarFramePtr) {
+	    varFramePtr = iPtr->rootFramePtr;
+	    savedVarFramePtr = iPtr->varFramePtr;
+	    iPtr->varFramePtr = varFramePtr;
+	}
+    }
+
+    /*
+     * Find the function to execute this command. If there isn't one, then see
+     * if there is an unknown command handler registered for this namespace.
+     * If so, create a new word array with the handler as the first words and
+     * the original command words as arguments. Then call ourselves
+     * recursively to execute it.
+     */
+
+    cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, objv[0]);
+    if (!cmdPtr) {
+	goto notFound;
+    }
+
+    if (savedNsPtr) {
+	varFramePtr->nsPtr = savedNsPtr;
+    } else if (iPtr->ensembleRewrite.sourceObjs) {
+	/*
+	 * TCL_EVAL_INVOKE was not set: clear rewrite rules
+	 */
+
+	iPtr->ensembleRewrite.sourceObjs = NULL;
+    }
+
+    /*
+     * Call trace functions if needed.
+     */
+
+    traced = (iPtr->tracePtr || (cmdPtr->flags & CMD_HAS_EXEC_TRACES));
+    if (traced && checkTraces) {
+	int cmdEpoch = cmdPtr->cmdEpoch;
+	int newEpoch;
+
+	/*
+	 * Insure that we have a correct nul-terminated command string for the
+	 * trace code.
+	 */
+
+	commandPtr = GetCommandSource(iPtr, command, length, objc, objv);
+	command = TclGetStringFromObj(commandPtr, &length);
+
+	/*
+	 * Execute any command or execution traces. Note that we bump up the
+	 * command's reference count for the duration of the calling of the
+	 * traces so that the structure doesn't go away underneath our feet.
+	 */
+
+	cmdPtr->refCount++;
+	if (iPtr->tracePtr && (traceCode == TCL_OK)) {
+	    traceCode = TclCheckInterpTraces(interp, command, length,
+		    cmdPtr, code, TCL_TRACE_ENTER_EXEC, objc, objv);
+	}
+	if ((cmdPtr->flags & CMD_HAS_EXEC_TRACES) && (traceCode == TCL_OK)) {
+	    traceCode = TclCheckExecutionTraces(interp, command, length,
+		    cmdPtr, code, TCL_TRACE_ENTER_EXEC, objc, objv);
+	}
+	newEpoch = cmdPtr->cmdEpoch;
+	TclCleanupCommandMacro(cmdPtr);
+
+	/*
+	 * If the traces modified/deleted the command or any existing traces,
+	 * they will update the command's epoch. When that happens, set
+	 * checkTraces is set to 0 to prevent the re-calling of traces (and
+	 * any possible infinite loop) and we go back to re-find the command
+	 * implementation.
+	 */
+
+	if (cmdEpoch != newEpoch) {
+	    checkTraces = 0;
+	    if (commandPtr) {
+		Tcl_DecrRefCount(commandPtr);
 	    }
-	    goto done;
-        }
-	if (savedNsPtr) {
-	    iPtr->varFramePtr->nsPtr = savedNsPtr;
+	    goto reparseBecauseOfTraces;
 	}
-    
-        /*
-         * Call trace procedures if needed.
-         */
-        if ((checkTraces) && (command != NULL)) {
-            int cmdEpoch = cmdPtr->cmdEpoch;
-	    int newEpoch;
-	    
-	    cmdPtr->refCount++;
-            /* 
-             * If the first set of traces modifies/deletes the command or
-             * any existing traces, then the set checkTraces to 0 and
-             * go through this while loop one more time.
-             */
-            if (iPtr->tracePtr != NULL && traceCode == TCL_OK) {
-                traceCode = TclCheckInterpTraces(interp, command, length,
-                               cmdPtr, code, TCL_TRACE_ENTER_EXEC, objc, objv);
-            }
-            if ((cmdPtr->flags & CMD_HAS_EXEC_TRACES) 
-		    && (traceCode == TCL_OK)) {
-                traceCode = TclCheckExecutionTraces(interp, command, length,
-                               cmdPtr, code, TCL_TRACE_ENTER_EXEC, objc, objv);
-            }
-	    newEpoch = cmdPtr->cmdEpoch;
-	    TclCleanupCommand(cmdPtr);
-            if (cmdEpoch != newEpoch) {
-                /* The command has been modified in some way */
-                checkTraces = 0;
-                continue;
-            }
-        }
-        break;
     }
 
 #ifdef USE_DTRACE
@@ -3235,14 +3668,24 @@ TclEvalObjvInternal(interp, objc, objv, command, length, flags)
 	TCL_DTRACE_CMD_ARGS(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
 		a[8], a[9]);
     }
+    if (TCL_DTRACE_CMD_INFO_ENABLED() && iPtr->cmdFramePtr) {
+	Tcl_Obj *info = TclInfoFrame(interp, iPtr->cmdFramePtr);
+	char *a[4]; int i[2];
+
+	TclDTraceInfo(info, a, i);
+	TCL_DTRACE_CMD_INFO(a[0], a[1], a[2], a[3], i[0], i[1]);
+	TclDecrRefCount(info);
+    }
 #endif /* USE_DTRACE */
 
     /*
      * Finally, invoke the command's Tcl_ObjCmdProc.
      */
+
     cmdPtr->refCount++;
     iPtr->cmdCount++;
-    if ( code == TCL_OK && traceCode == TCL_OK) {
+    if (code == TCL_OK && traceCode == TCL_OK
+	    && !TclLimitExceeded(iPtr->limit)) {
 	if (TCL_DTRACE_CMD_ENTRY_ENABLED()) {
 	    TCL_DTRACE_CMD_ENTRY(TclGetString(objv[0]), objc - 1,
 		    (Tcl_Obj **)(objv + 1));
@@ -3252,48 +3695,58 @@ TclEvalObjvInternal(interp, objc, objv, command, length, flags)
 	    TCL_DTRACE_CMD_RETURN(TclGetString(objv[0]), code);
 	}
     }
-    if (Tcl_AsyncReady()) {
+
+    if (TclAsyncReady(iPtr)) {
 	code = Tcl_AsyncInvoke(interp, code);
     }
+    if (code == TCL_OK && TclLimitReady(iPtr->limit)) {
+	code = Tcl_LimitCheck(interp);
+    }
 
     /*
      * Call 'leave' command traces
      */
-    if (!(cmdPtr->flags & CMD_IS_DELETED)) {
-	int saveErrFlags = iPtr->flags 
-		& (ERR_IN_PROGRESS | ERR_ALREADY_LOGGED | ERROR_CODE_SET);
-        if ((cmdPtr->flags & CMD_HAS_EXEC_TRACES) && (traceCode == TCL_OK)) {
-            traceCode = TclCheckExecutionTraces (interp, command, length,
-                   cmdPtr, code, TCL_TRACE_LEAVE_EXEC, objc, objv);
-        }
-        if (iPtr->tracePtr != NULL && traceCode == TCL_OK) {
-            traceCode = TclCheckInterpTraces(interp, command, length,
-                   cmdPtr, code, TCL_TRACE_LEAVE_EXEC, objc, objv);
-        }
-	if (traceCode == TCL_OK) {
-	    iPtr->flags |= saveErrFlags;
+
+    if (traced) {
+	if (!(cmdPtr->flags & CMD_IS_DELETED)) {
+	    if ((cmdPtr->flags & CMD_HAS_EXEC_TRACES) && traceCode == TCL_OK){
+		traceCode = TclCheckExecutionTraces(interp, command, length,
+			cmdPtr, code, TCL_TRACE_LEAVE_EXEC, objc, objv);
+	    }
+	    if (iPtr->tracePtr != NULL && traceCode == TCL_OK) {
+		traceCode = TclCheckInterpTraces(interp, command, length,
+			cmdPtr, code, TCL_TRACE_LEAVE_EXEC, objc, objv);
+	    }
+	}
+
+	/*
+	 * If one of the trace invocation resulted in error, then change the
+	 * result code accordingly. Note, that the interp->result should
+	 * already be set correctly by the call to TraceExecutionProc.
+	 */
+
+	if (traceCode != TCL_OK) {
+	    code = traceCode;
+	}
+	if (commandPtr) {
+	    Tcl_DecrRefCount(commandPtr);
 	}
     }
-    TclCleanupCommand(cmdPtr);
 
     /*
-     * If one of the trace invocation resulted in error, then 
-     * change the result code accordingly. Note, that the
-     * interp->result should already be set correctly by the
-     * call to TraceExecutionProc.  
+     * Decrement the reference count of cmdPtr and deallocate it if it has
+     * dropped to zero.
      */
 
-    if (traceCode != TCL_OK) {
-	code = traceCode;
-    }
-    
+    TclCleanupCommandMacro(cmdPtr);
+
     /*
-     * If the interpreter has a non-empty string result, the result
-     * object is either empty or stale because some procedure set
-     * interp->result directly. If so, move the string result to the
-     * result object, then reset the string result.
+     * If the interpreter has a non-empty string result, the result object is
+     * either empty or stale because some function set interp->result
+     * directly. If so, move the string result to the result object, then
+     * reset the string result.
      */
-    
+
     if (*(iPtr->result) != 0) {
 	(void) Tcl_GetObjResult(interp);
     }
@@ -3303,532 +3756,213 @@ TclEvalObjvInternal(interp, objc, objv, command, length, flags)
 	Tcl_Obj *r;
 
 	r = Tcl_GetObjResult(interp);
-	TCL_DTRACE_CMD_RESULT(TclGetString(objv[0]), code, TclGetString(r), r);
+	TCL_DTRACE_CMD_RESULT(TclGetString(objv[0]), code, TclGetString(r),r);
     }
 #endif /* USE_DTRACE */
 
-    done:
-    iPtr->varFramePtr = savedVarFramePtr;
+  done:
+    if (savedVarFramePtr) {
+	iPtr->varFramePtr = savedVarFramePtr;
+    }
     return code;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_EvalObjv --
- *
- *	This procedure evaluates a Tcl command that has already been
- *	parsed into words, with one Tcl_Obj holding each word.
- *
- * Results:
- *	The return value is a standard Tcl completion code such as
- *	TCL_OK or TCL_ERROR.  A result or error message is left in
- *	interp's result.
- *
- * Side effects:
- *	Depends on the command.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_EvalObjv(interp, objc, objv, flags)
-    Tcl_Interp *interp;		/* Interpreter in which to evaluate the
-				 * command.  Also used for error
-				 * reporting. */
-    int objc;			/* Number of words in command. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to objects that are
-				 * the words that make up the command. */
-    int flags;			/* Collection of OR-ed bits that control
-				 * the evaluation of the script.  Only
-				 * TCL_EVAL_GLOBAL and TCL_EVAL_INVOKE
-				 * are  currently supported. */
-{
-    Interp *iPtr = (Interp *)interp;
-    Trace *tracePtr;
-    Tcl_DString cmdBuf;
-    char *cmdString = "";	/* A command string is only necessary for
-				 * command traces or error logs; it will be
-				 * generated to replace this default value if
-				 * necessary. */
-    int cmdLen = 0;		/* a non-zero value indicates that a command
-				 * string was generated. */
-    int code = TCL_OK;
-    int i;
-    int allowExceptions = (iPtr->evalFlags & TCL_ALLOW_EXCEPTIONS);
 
-    for (tracePtr = iPtr->tracePtr; tracePtr; tracePtr = tracePtr->nextPtr) {
-	if ((tracePtr->level == 0) || (iPtr->numLevels <= tracePtr->level)) {
-	    /*
-	     * The command may be needed for an execution trace.  Generate a
-	     * command string.
-	     */
-	    
-	    Tcl_DStringInit(&cmdBuf);
-	    for (i = 0; i < objc; i++) {
-		Tcl_DStringAppendElement(&cmdBuf, Tcl_GetString(objv[i]));
+  notFound:
+    {
+	Namespace *currNsPtr = NULL;	/* Used to check for and invoke any
+					 * registered unknown command handler
+					 * for the current namespace (TIP
+					 * 181). */
+	int newObjc, handlerObjc;
+	Tcl_Obj **handlerObjv;
+
+	currNsPtr = varFramePtr->nsPtr;
+	if ((currNsPtr == NULL) || (currNsPtr->unknownHandlerPtr == NULL)) {
+	    currNsPtr = iPtr->globalNsPtr;
+	    if (currNsPtr == NULL) {
+		Tcl_Panic("TclEvalObjvInternal: NULL global namespace pointer");
 	    }
-	    cmdString = Tcl_DStringValue(&cmdBuf);
-	    cmdLen = Tcl_DStringLength(&cmdBuf);
-	    break;
 	}
-    }
 
-    iPtr->numLevels++;
-    code = TclEvalObjvInternal(interp, objc, objv, cmdString, cmdLen, flags);
-    iPtr->numLevels--;
+	/*
+	 * Check to see if the resolution namespace has lost its unknown
+	 * handler. If so, reset it to "::unknown".
+	 */
 
-    /*
-     * If we are again at the top level, process any unusual 
-     * return code returned by the evaluated code. 
-     */
-	
-    if (iPtr->numLevels == 0) {
-	if (code == TCL_RETURN) {
-	    code = TclUpdateReturnInfo(iPtr);
+	if (currNsPtr->unknownHandlerPtr == NULL) {
+	    TclNewLiteralStringObj(currNsPtr->unknownHandlerPtr, "::unknown");
+	    Tcl_IncrRefCount(currNsPtr->unknownHandlerPtr);
 	}
-	if ((code != TCL_OK) && (code != TCL_ERROR) 
-	    && !allowExceptions) {
-	    ProcessUnexpectedResult(interp, code);
-	    code = TCL_ERROR;
+
+	/*
+	 * Get the list of words for the unknown handler and allocate enough
+	 * space to hold both the handler prefix and all words of the command
+	 * invokation itself.
+	 */
+
+	Tcl_ListObjGetElements(NULL, currNsPtr->unknownHandlerPtr,
+		&handlerObjc, &handlerObjv);
+	newObjc = objc + handlerObjc;
+	newObjv = (Tcl_Obj **) TclStackAlloc(interp,
+		(int) sizeof(Tcl_Obj *) * newObjc);
+
+	/*
+	 * Copy command prefix from unknown handler and add on the real
+	 * command's full argument list. Note that we only use memcpy() once
+	 * because we have to increment the reference count of all the handler
+	 * arguments anyway.
+	 */
+
+	for (i = 0; i < handlerObjc; ++i) {
+	    newObjv[i] = handlerObjv[i];
+	    Tcl_IncrRefCount(newObjv[i]);
 	}
-    }
-	    
-    if ((code == TCL_ERROR) && !(flags & TCL_EVAL_INVOKE)) {
+	memcpy(newObjv+handlerObjc, objv, sizeof(Tcl_Obj *) * (unsigned)objc);
 
-	/* 
-	 * If there was an error, a command string will be needed for the 
-	 * error log: generate it now if it was not done previously.
+	/*
+	 * Look up and invoke the handler (by recursive call to this
+	 * function). If there is no handler at all, instead of doing the
+	 * recursive call we just generate a generic error message; it would
+	 * be an infinite-recursion nightmare otherwise.
 	 */
 
-	if (cmdLen == 0) {
-	    Tcl_DStringInit(&cmdBuf);
-	    for (i = 0; i < objc; i++) {
-		Tcl_DStringAppendElement(&cmdBuf, Tcl_GetString(objv[i]));
-	    }
-	    cmdString = Tcl_DStringValue(&cmdBuf);
-	    cmdLen = Tcl_DStringLength(&cmdBuf);
+	cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, newObjv[0]);
+	if (cmdPtr == NULL) {
+	    Tcl_AppendResult(interp, "invalid command name \"",
+		    TclGetString(objv[0]), "\"", NULL);
+	    code = TCL_ERROR;
+	} else {
+	    iPtr->numLevels++;
+	    code = TclEvalObjvInternal(interp, newObjc, newObjv, command,
+		    length, 0);
+	    iPtr->numLevels--;
 	}
-	Tcl_LogCommandInfo(interp, cmdString, cmdString, cmdLen);
-    }
 
-    if (cmdLen != 0) {
-	Tcl_DStringFree(&cmdBuf);
+	/*
+	 * Release any resources we locked and allocated during the handler
+	 * call.
+	 */
+
+	for (i = 0; i < handlerObjc; ++i) {
+	    Tcl_DecrRefCount(newObjv[i]);
+	}
+	TclStackFree(interp, newObjv);
+	if (savedNsPtr) {
+	    varFramePtr->nsPtr = savedNsPtr;
+	}
+	goto done;
     }
-    return code;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_LogCommandInfo --
+ * Tcl_EvalObjv --
  *
- *	This procedure is invoked after an error occurs in an interpreter.
- *	It adds information to the "errorInfo" variable to describe the
- *	command that was being executed when the error occurred.
+ *	This function evaluates a Tcl command that has already been parsed
+ *	into words, with one Tcl_Obj holding each word.
  *
  * Results:
- *	None.
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR. A result or error message is left in interp's result.
  *
  * Side effects:
- *	Information about the command is added to errorInfo and the
- *	line number stored internally in the interpreter is set.  If this
- *	is the first call to this procedure or Tcl_AddObjErrorInfo since
- *	an error occurred, then old information in errorInfo is
- *	deleted.
+ *	Depends on the command.
  *
  *----------------------------------------------------------------------
  */
 
-void
-Tcl_LogCommandInfo(interp, script, command, length)
-    Tcl_Interp *interp;		/* Interpreter in which to log information. */
-    CONST char *script;		/* First character in script containing
-				 * command (must be <= command). */
-    CONST char *command;	/* First character in command that
-				 * generated the error. */
-    int length;			/* Number of bytes in command (-1 means
-				 * use all bytes up to first null byte). */
+int
+Tcl_EvalObjv(
+    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
+				 * command. Also used for error reporting. */
+    int objc,			/* Number of words in command. */
+    Tcl_Obj *const objv[],	/* An array of pointers to objects that are
+				 * the words that make up the command. */
+    int flags)			/* Collection of OR-ed bits that control the
+				 * evaluation of the script. Only
+				 * TCL_EVAL_GLOBAL and TCL_EVAL_INVOKE are
+				 * currently supported. */
 {
-    char buffer[200];
-    register CONST char *p;
-    char *ellipsis = "";
     Interp *iPtr = (Interp *) interp;
+    int code = TCL_OK;
+    int allowExceptions = (iPtr->evalFlags & TCL_ALLOW_EXCEPTIONS);
+
+    iPtr->numLevels++;
+    code = TclEvalObjvInternal(interp, objc, objv, NULL, 0, flags);
+    iPtr->numLevels--;
+
+    if (code == TCL_OK) {
+	return code;
+    } else {
 
-    if (iPtr->flags & ERR_ALREADY_LOGGED) {
 	/*
-	 * Someone else has already logged error information for this
-	 * command; we shouldn't add anything more.
+	 * If we are again at the top level, process any unusual return code
+	 * returned by the evaluated code.
 	 */
 
-	return;
-    }
+	if (iPtr->numLevels == 0) {
+	    if (code == TCL_RETURN) {
+		code = TclUpdateReturnInfo(iPtr);
+	    }
+	    if ((code != TCL_ERROR) && !allowExceptions) {
+		ProcessUnexpectedResult(interp, code);
+		code = TCL_ERROR;
+	    }
+	}
 
-    /*
-     * Compute the line number where the error occurred.
-     */
+	if ((code == TCL_ERROR) && !(flags & TCL_EVAL_INVOKE)) {
+	    /*
+	     * If there was an error, a command string will be needed for the
+	     * error log: generate it now. Do not worry too much about doing
+	     * it expensively.
+	     */
 
-    iPtr->errorLine = 1;
-    for (p = script; p != command; p++) {
-	if (*p == '\n') {
-	    iPtr->errorLine++;
-	}
-    }
+	    Tcl_Obj *listPtr;
+	    char *cmdString;
+	    int cmdLen;
 
-    /*
-     * Create an error message to add to errorInfo, including up to a
-     * maximum number of characters of the command.
-     */
+	    listPtr = Tcl_NewListObj(objc, objv);
+	    cmdString = Tcl_GetStringFromObj(listPtr, &cmdLen);
+	    Tcl_LogCommandInfo(interp, cmdString, cmdString, cmdLen);
+	    Tcl_DecrRefCount(listPtr);
+	}
 
-    if (length < 0) {
-	length = strlen(command);
-    }
-    if (length > 150) {
-	length = 150;
-	ellipsis = "...";
-    }
-    while ( (command[length] & 0xC0) == 0x80 ) {
-	/*
-	 * Back up truncation point so that we don't truncate in the
-	 * middle of a multi-byte character (in UTF-8)
-	 */
-	length--;
-	ellipsis = "...";
-    }
-    if (!(iPtr->flags & ERR_IN_PROGRESS)) {
-	sprintf(buffer, "\n    while executing\n\"%.*s%s\"",
-		length, command, ellipsis);
-    } else {
-	sprintf(buffer, "\n    invoked from within\n\"%.*s%s\"",
-		length, command, ellipsis);
+	return code;
     }
-    Tcl_AddObjErrorInfo(interp, buffer, -1);
-    iPtr->flags &= ~ERR_ALREADY_LOGGED;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_EvalTokensStandard, EvalTokensStandard --
+ * Tcl_EvalTokensStandard --
+ *
+ *	Given an array of tokens parsed from a Tcl command (e.g., the tokens
+ *	that make up a word or the index for an array variable) this function
+ *	evaluates the tokens and concatenates their values to form a single
+ *	result value.
  *
- *	Given an array of tokens parsed from a Tcl command (e.g., the
- *	tokens that make up a word or the index for an array variable)
- *	this procedure evaluates the tokens and concatenates their
- *	values to form a single result value.
- * 
  * Results:
- *	The return value is a standard Tcl completion code such as
- *	TCL_OK or TCL_ERROR.  A result or error message is left in
- *	interp's result.
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR. A result or error message is left in interp's result.
  *
  * Side effects:
  *	Depends on the array of tokens being evaled.
  *
- * TIP #280 : Keep public API, internally extended API.
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_EvalTokensStandard(interp, tokenPtr, count)
-    Tcl_Interp *interp;		/* Interpreter in which to lookup
-				 * variables, execute nested commands,
-				 * and report errors. */
-    Tcl_Token *tokenPtr;	/* Pointer to first in an array of tokens
-				 * to evaluate and concatenate. */
-    int count;			/* Number of tokens to consider at tokenPtr.
+Tcl_EvalTokensStandard(
+    Tcl_Interp *interp,		/* Interpreter in which to lookup variables,
+				 * execute nested commands, and report
+				 * errors. */
+    Tcl_Token *tokenPtr,	/* Pointer to first in an array of tokens to
+				 * evaluate and concatenate. */
+    int count)			/* Number of tokens to consider at tokenPtr.
 				 * Must be at least 1. */
 {
-#ifdef TCL_TIP280
-  return EvalTokensStandard (interp, tokenPtr, count, 1, NULL, NULL);
-}
-
-static int
-EvalTokensStandard(interp, tokenPtr, count, line, clNextOuter, outerScript)
-    Tcl_Interp *interp;		/* Interpreter in which to lookup
-				 * variables, execute nested commands,
-				 * and report errors. */
-    Tcl_Token *tokenPtr;	/* Pointer to first in an array of tokens
-				 * to evaluate and concatenate. */
-    int count;			/* Number of tokens to consider at tokenPtr.
-				 * Must be at least 1. */
-    int line;                   /* The line the script starts on. */
-    int*  clNextOuter;       /* Information about an outer context for */
-    CONST char* outerScript; /* continuation line data. This is set by
-			      * EvalEx() to properly handle [...]-nested
-			      * commands. The 'outerScript' refers to the
-			      * most-outer script containing the embedded
-			      * command, which is refered to by 'script'. The
-			      * 'clNextOuter' refers to the current entry in
-			      * the table of continuation lines in this
-			      * "master script", and the character offsets are
-			      * relative to the 'outerScript' as well.
-			      *
-			      * If outerScript == script, then this call is for
-			      * words in the outer-most script/command. See
-			      * Tcl_EvalEx() and TclEvalObjEx() for the places
-			      * generating arguments for which this is true.
-			      */
-{
-#endif
-    Tcl_Obj *resultPtr, *indexPtr, *valuePtr;
-    char buffer[TCL_UTF_MAX];
-#ifdef TCL_MEM_DEBUG
-#   define  MAX_VAR_CHARS 5
-#else
-#   define  MAX_VAR_CHARS 30
-#endif
-    char nameBuffer[MAX_VAR_CHARS+1];
-    char *varName, *index;
-    CONST char *p = NULL;	/* Initialized to avoid compiler warning. */
-    int length, code;
-#ifdef TCL_TIP280
-#define NUM_STATIC_POS 20
-    int isLiteral, maxNumCL, numCL, i, adjust;
-    int* clPosition = NULL;
-    Interp* iPtr = (Interp*) interp;
-    int inFile = iPtr->evalFlags & TCL_EVAL_FILE;
-#endif
-
-    /*
-     * The only tricky thing about this procedure is that it attempts to
-     * avoid object creation and string copying whenever possible.  For
-     * example, if the value is just a nested command, then use the
-     * command's result object directly.
-     */
-
-    code = TCL_OK;
-    resultPtr = NULL;
-    Tcl_ResetResult(interp);
-#ifdef TCL_TIP280
-    /*
-     * For the handling of continuation lines in literals we first check if
-     * this is actually a literal. For if not we can forego the additional
-     * processing. Otherwise we pre-allocate a small table to store the
-     * locations of all continuation lines we find in this literal, if
-     * any. The table is extended if needed.
-     */
-
-    numCL     = 0;
-    maxNumCL  = 0;
-    isLiteral = 1;
-    for (i=0 ; i < count; i++) {
-	if ((tokenPtr[i].type != TCL_TOKEN_TEXT) &&
-	    (tokenPtr[i].type != TCL_TOKEN_BS)) {
-	    isLiteral = 0;
-	    break;
-	}
-    }
-
-    if (isLiteral) {
-	maxNumCL   = NUM_STATIC_POS;
-	clPosition = (int*) ckalloc (maxNumCL*sizeof(int));
-    }
-    adjust = 0;
-#endif
-    for ( ; count > 0; count--, tokenPtr++) {
-	valuePtr = NULL;
-
-	/*
-	 * The switch statement below computes the next value to be
-	 * concat to the result, as either a range of text or an
-	 * object.
-	 */
-
-	switch (tokenPtr->type) {
-	    case TCL_TOKEN_TEXT:
-		p = tokenPtr->start;
-		length = tokenPtr->size;
-		break;
-
-	    case TCL_TOKEN_BS:
-		length = TclParseBackslash(tokenPtr->start, tokenPtr->size,
-			(int *) NULL, buffer);
-		p = buffer;
-#ifdef TCL_TIP280
-		/*
-		 * If the backslash sequence we found is in a literal, and
-		 * represented a continuation line, we compute and store its
-		 * location (as char offset to the beginning of the _result_
-		 * script). We may have to extend the table of locations.
-		 *
-		 * Note that the continuation line information is relevant
-		 * even if the word we are processing is not a literal, as it
-		 * can affect nested commands. See the branch for
-		 * TCL_TOKEN_COMMAND below, where the adjustment we are
-		 * tracking here is taken into account. The good thing is that
-		 * we do not need a table of everything, just the number of
-		 * lines we have to add as correction.
-		 */
-
-		if ((length == 1) && (buffer[0] == ' ') &&
-		    (tokenPtr->start[1] == '\n')) {
-		    if (isLiteral) {
-			int clPos;
-			if (resultPtr == 0) {
-			    clPos = 0;
-			} else {
-			    Tcl_GetStringFromObj(resultPtr, &clPos);
-			}
-
-			if (numCL >= maxNumCL) {
-			    maxNumCL *= 2;
-			    clPosition = (int*) ckrealloc ((char*)clPosition,
-							   maxNumCL*sizeof(int));
-			}
-			clPosition[numCL] = clPos;
-			numCL ++;
-		    }
-		    adjust ++;
-		}
-#endif
-		break;
-
-	    case TCL_TOKEN_COMMAND: {
-		Interp *iPtr = (Interp *) interp;
-		iPtr->numLevels++;
-		code = TclInterpReady(interp);
-		if (code == TCL_OK) {
-#ifndef TCL_TIP280
-		    code = Tcl_EvalEx(interp,
-			    tokenPtr->start+1, tokenPtr->size-2, 0);
-#else
-		    /* TIP #280: Transfer line information to nested command */
-		    TclAdvanceContinuations (&line, &clNextOuter,
-					     tokenPtr->start - outerScript);
-		    code = EvalEx(interp,
-				  tokenPtr->start+1, tokenPtr->size-2, 0,
-				  line + adjust, clNextOuter, outerScript);
-
-		    /*
-		     * Restore flag reset by the nested eval for future
-		     * bracketed commands and their CmdFrame setup
-		     */
-		    if (inFile) {
-			iPtr->evalFlags |= TCL_EVAL_FILE;
-		    }
-#endif
-		}
-		iPtr->numLevels--;
-		if (code != TCL_OK) {
-		    goto done;
-		}
-		valuePtr = Tcl_GetObjResult(interp);
-		break;
-	    }
-
-	    case TCL_TOKEN_VARIABLE:
-		if (tokenPtr->numComponents == 1) {
-		    indexPtr = NULL;
-		    index = NULL;
-		} else {
-#ifndef TCL_TIP280
-		    code = Tcl_EvalTokensStandard(interp, tokenPtr+2,
-			    tokenPtr->numComponents - 1);
-#else
-		    /* TIP #280: Transfer line information to nested command */
-		    code = EvalTokensStandard(interp, tokenPtr+2,
-			    tokenPtr->numComponents - 1, line, NULL, NULL);
-#endif
-		    if (code != TCL_OK) {
-			goto done;
-		    }
-		    indexPtr = Tcl_GetObjResult(interp);
-		    Tcl_IncrRefCount(indexPtr);
-		    index = Tcl_GetString(indexPtr);
-		}
-
-		/*
-		 * We have to make a copy of the variable name in order
-		 * to have a null-terminated string.  We can't make a
-		 * temporary modification to the script to null-terminate
-		 * the name, because a trace callback might potentially
-		 * reuse the script and be affected by the null character.
-		 */
-
-		if (tokenPtr[1].size <= MAX_VAR_CHARS) {
-		    varName = nameBuffer;
-		} else {
-		    varName = ckalloc((unsigned) (tokenPtr[1].size + 1));
-		}
-		strncpy(varName, tokenPtr[1].start, (size_t) tokenPtr[1].size);
-		varName[tokenPtr[1].size] = 0;
-		valuePtr = Tcl_GetVar2Ex(interp, varName, index,
-			TCL_LEAVE_ERR_MSG);
-		if (varName != nameBuffer) {
-		    ckfree(varName);
-		}
-		if (indexPtr != NULL) {
-		    Tcl_DecrRefCount(indexPtr);
-		}
-		if (valuePtr == NULL) {
-		    code = TCL_ERROR;
-		    goto done;
-		}
-		count -= tokenPtr->numComponents;
-		tokenPtr += tokenPtr->numComponents;
-		break;
-
-	    default:
-		panic("unexpected token type in Tcl_EvalTokensStandard");
-	}
-
-	/*
-	 * If valuePtr isn't NULL, the next piece of text comes from that
-	 * object; otherwise, take length bytes starting at p.
-	 */
-
-	if (resultPtr == NULL) {
-	    if (valuePtr != NULL) {
-		resultPtr = valuePtr;
-	    } else {
-		resultPtr = Tcl_NewStringObj(p, length);
-	    }
-	    Tcl_IncrRefCount(resultPtr);
-	} else {
-	    if (Tcl_IsShared(resultPtr)) {
-		Tcl_DecrRefCount(resultPtr);
-		resultPtr = Tcl_DuplicateObj(resultPtr);
-		Tcl_IncrRefCount(resultPtr);
-	    }
-	    if (valuePtr != NULL) {
-		p = Tcl_GetStringFromObj(valuePtr, &length);
-	    }
-	    Tcl_AppendToObj(resultPtr, p, length);
-	}
-    }
-    if (resultPtr != NULL) {
-	Tcl_SetObjResult(interp, resultPtr);
-#ifdef TCL_TIP280
-	/*
-	 * If the code found continuation lines (which implies that this word
-	 * is a literal), then we store the accumulated table of locations in
-	 * the thread-global data structure for the bytecode compiler to find
-	 * later, assuming that the literal is a script which will be
-	 * compiled.
-	 */
-
-	if (numCL) {
-	    TclContinuationsEnter(resultPtr, numCL, clPosition);
-	}
-
-	/*
-	 * Release the temp table we used to collect the locations of
-	 * continuation lines, if any.
-	 */
-
-	if (maxNumCL) {
-	    ckfree ((char*) clPosition);
-	}
-#endif
-    } else {
-	code = TCL_ERROR;
-    }
-
-    done:
-    if (resultPtr != NULL) {
-	Tcl_DecrRefCount(resultPtr);
-    }
-    return code;
+    return TclSubstTokens(interp, tokenPtr, count, /* numLeftPtr */ NULL, 1,
+			  NULL, NULL);
 }
 
 /*
@@ -3836,67 +3970,62 @@ EvalTokensStandard(interp, tokenPtr, count, line, clNextOuter, outerScript)
  *
  * Tcl_EvalTokens --
  *
- *	Given an array of tokens parsed from a Tcl command (e.g., the
- *	tokens that make up a word or the index for an array variable)
- *	this procedure evaluates the tokens and concatenates their
- *	values to form a single result value.
+ *	Given an array of tokens parsed from a Tcl command (e.g., the tokens
+ *	that make up a word or the index for an array variable) this function
+ *	evaluates the tokens and concatenates their values to form a single
+ *	result value.
  *
  * Results:
- *	The return value is a pointer to a newly allocated Tcl_Obj
- *	containing the value of the array of tokens.  The reference
- *	count of the returned object has been incremented.  If an error
- *	occurs in evaluating the tokens then a NULL value is returned
- *	and an error message is left in interp's result.
+ *	The return value is a pointer to a newly allocated Tcl_Obj containing
+ *	the value of the array of tokens. The reference count of the returned
+ *	object has been incremented. If an error occurs in evaluating the
+ *	tokens then a NULL value is returned and an error message is left in
+ *	interp's result.
  *
  * Side effects:
  *	A new object is allocated to hold the result.
  *
  *----------------------------------------------------------------------
  *
- * This uses a non-standard return convention; its use is now deprecated.
- * It is a wrapper for the new function Tcl_EvalTokensStandard, and is not 
- * used in the core any longer. It is only kept for backward compatibility.
+ * This uses a non-standard return convention; its use is now deprecated. It
+ * is a wrapper for the new function Tcl_EvalTokensStandard, and is not used
+ * in the core any longer. It is only kept for backward compatibility.
  */
 
 Tcl_Obj *
-Tcl_EvalTokens(interp, tokenPtr, count)
-    Tcl_Interp *interp;		/* Interpreter in which to lookup
-				 * variables, execute nested commands,
-				 * and report errors. */
-    Tcl_Token *tokenPtr;	/* Pointer to first in an array of tokens
-				 * to evaluate and concatenate. */
-    int count;			/* Number of tokens to consider at tokenPtr.
+Tcl_EvalTokens(
+    Tcl_Interp *interp,		/* Interpreter in which to lookup variables,
+				 * execute nested commands, and report
+				 * errors. */
+    Tcl_Token *tokenPtr,	/* Pointer to first in an array of tokens to
+				 * evaluate and concatenate. */
+    int count)			/* Number of tokens to consider at tokenPtr.
 				 * Must be at least 1. */
 {
-    int code;
     Tcl_Obj *resPtr;
-    
-    code = Tcl_EvalTokensStandard(interp, tokenPtr, count);
-    if (code == TCL_OK) {
-	resPtr = Tcl_GetObjResult(interp);
-	Tcl_IncrRefCount(resPtr);
-	Tcl_ResetResult(interp);
-	return resPtr;
-    } else {
+
+    if (Tcl_EvalTokensStandard(interp, tokenPtr, count) != TCL_OK) {
 	return NULL;
     }
+    resPtr = Tcl_GetObjResult(interp);
+    Tcl_IncrRefCount(resPtr);
+    Tcl_ResetResult(interp);
+    return resPtr;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_EvalEx, EvalEx --
+ * Tcl_EvalEx, TclEvalEx --
  *
- *	This procedure evaluates a Tcl script without using the compiler
- *	or byte-code interpreter.  It just parses the script, creates
- *	values for each word of each command, then calls EvalObjv
- *	to execute each command.
+ *	This function evaluates a Tcl script without using the compiler or
+ *	byte-code interpreter. It just parses the script, creates values for
+ *	each word of each command, then calls EvalObjv to execute each
+ *	command.
  *
  * Results:
- *	The return value is a standard Tcl completion code such as
- *	TCL_OK or TCL_ERROR.  A result or error message is left in
- *	interp's result.
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR. A result or error message is left in interp's result.
  *
  * Side effects:
  *	Depends on the script.
@@ -3906,38 +4035,35 @@ Tcl_EvalTokens(interp, tokenPtr, count)
  */
 
 int
-Tcl_EvalEx(interp, script, numBytes, flags)
-    Tcl_Interp *interp;		/* Interpreter in which to evaluate the
-				 * script.  Also used for error reporting. */
-    CONST char *script;		/* First character of script to evaluate. */
-    int numBytes;		/* Number of bytes in script.  If < 0, the
+Tcl_EvalEx(
+    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
+				 * script. Also used for error reporting. */
+    const char *script,		/* First character of script to evaluate. */
+    int numBytes,		/* Number of bytes in script. If < 0, the
 				 * script consists of all bytes up to the
 				 * first null character. */
-    int flags;			/* Collection of OR-ed bits that control
-				 * the evaluation of the script.  Only
-				 * TCL_EVAL_GLOBAL is currently
-				 * supported. */
+    int flags)			/* Collection of OR-ed bits that control the
+				 * evaluation of the script. Only
+				 * TCL_EVAL_GLOBAL is currently supported. */
 {
-#ifdef TCL_TIP280
-  return EvalEx (interp, script, numBytes, flags, 1, NULL, script);
+  return TclEvalEx(interp, script, numBytes, flags, 1, NULL, script);
 }
 
-static int
-EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
-    Tcl_Interp *interp;		/* Interpreter in which to evaluate the
-				 * script.  Also used for error reporting. */
-    CONST char *script;		/* First character of script to evaluate. */
-    int numBytes;		/* Number of bytes in script.  If < 0, the
+int
+TclEvalEx(
+    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
+				 * script. Also used for error reporting. */
+    const char *script,		/* First character of script to evaluate. */
+    int numBytes,		/* Number of bytes in script. If < 0, the
 				 * script consists of all bytes up to the
-				 * first null character. */
-    int flags;			/* Collection of OR-ed bits that control
-				 * the evaluation of the script.  Only
-				 * TCL_EVAL_GLOBAL is currently
-				 * supported. */
-    int line;                   /* The line the script starts on. */
-    int*  clNextOuter;       /* Information about an outer context for */
-    CONST char* outerScript; /* continuation line data. This is set only in
-			      * EvalTokensStandard(), to properly handle
+				 * first NUL character. */
+    int flags,			/* Collection of OR-ed bits that control the
+				 * evaluation of the script. Only
+				 * TCL_EVAL_GLOBAL is currently supported. */
+    int line,			/* The line the script starts on. */
+    int*  clNextOuter,       /* Information about an outer context for */
+    CONST char* outerScript) /* continuation line data. This is set only in
+			      * TclSubstTokens(), to properly handle
 			      * [...]-nested commands. The 'outerScript'
 			      * refers to the most-outer script containing the
 			      * embedded command, which is refered to by
@@ -3953,31 +4079,32 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 			      * generating arguments for which this is true.
 			      */
 {
-#endif
     Interp *iPtr = (Interp *) interp;
-    CONST char *p, *next;
-    Tcl_Parse parse;
-#define NUM_STATIC_OBJS 20
-    Tcl_Obj *staticObjArray[NUM_STATIC_OBJS], **objv;
+    const char *p, *next;
+    const unsigned int minObjs = 20;
+    Tcl_Obj **objv, **objvSpace;
+    int *expand, *lines, *lineSpace;
     Tcl_Token *tokenPtr;
-    int code = TCL_OK;
-    int i, commandLength, bytesLeft, nested;
-    CallFrame *savedVarFramePtr;   /* Saves old copy of iPtr->varFramePtr
-				    * in case TCL_EVAL_GLOBAL was set. */
+    int commandLength, bytesLeft, expandRequested, code = TCL_OK;
+    CallFrame *savedVarFramePtr;/* Saves old copy of iPtr->varFramePtr in case
+				 * TCL_EVAL_GLOBAL was set. */
     int allowExceptions = (iPtr->evalFlags & TCL_ALLOW_EXCEPTIONS);
-    
-    /*
-     * The variables below keep track of how much state has been
-     * allocated while evaluating the script, so that it can be freed
-     * properly if an error occurs.
-     */
-
-    int gotParse = 0, objectsUsed = 0;
-
-#ifdef TCL_TIP280
-    /* TIP #280 Structures for tracking of command locations. */
-    CmdFrame eeFrame;
-
+    int gotParse = 0;
+    unsigned int i, objectsUsed = 0;
+				/* These variables keep track of how much
+				 * state has been allocated while evaluating
+				 * the script, so that it can be freed
+				 * properly if an error occurs. */
+    Tcl_Parse *parsePtr = (Tcl_Parse *)
+	    TclStackAlloc(interp, sizeof(Tcl_Parse));
+    CmdFrame *eeFramePtr = (CmdFrame *)
+	    TclStackAlloc(interp, sizeof(CmdFrame));
+    Tcl_Obj **stackObjArray = (Tcl_Obj **)
+	    TclStackAlloc(interp, minObjs * sizeof(Tcl_Obj *));
+    int *expandStack = (int *) TclStackAlloc(interp, minObjs * sizeof(int));
+    int *linesStack = (int *) TclStackAlloc(interp, minObjs * sizeof(int));
+				/* TIP #280 Structures for tracking of command
+				 * locations. */
     /*
      * Pointer for the tracking of invisible continuation lines. Initialized
      * only if the caller gave us a table of locations to track, via
@@ -3995,7 +4122,6 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 	    clNext = &iPtr->scriptCLLocPtr->loc[0];
 	}
     }
-#endif
 
     if (numBytes < 0) {
 	numBytes = strlen(script);
@@ -4004,112 +4130,102 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 
     savedVarFramePtr = iPtr->varFramePtr;
     if (flags & TCL_EVAL_GLOBAL) {
-	iPtr->varFramePtr = NULL;
+	iPtr->varFramePtr = iPtr->rootFramePtr;
     }
 
     /*
-     * Each iteration through the following loop parses the next
-     * command from the script and then executes it.
+     * Each iteration through the following loop parses the next command from
+     * the script and then executes it.
      */
 
-    objv = staticObjArray;
+    objv = objvSpace = stackObjArray;
+    lines = lineSpace = linesStack;
+    expand = expandStack;
     p = script;
     bytesLeft = numBytes;
-    if (iPtr->evalFlags & TCL_BRACKET_TERM) {
-	nested = 1;
-    } else {
-	nested = 0;
-    }
 
-#ifdef TCL_TIP280
-    /* TIP #280 Initialize tracking. Do not push on the frame stack yet. */
     /*
-     * We may cont. counting based on a specific context (CTX), or open a new
-     * context, either for a sourced script, or 'eval'. For sourced files we
-     * always have a path object, even if nothing was specified in the interp
-     * itself. That makes code using it simpler as NULL checks can be left
-     * out. Sourced file without path in the 'scriptFile' is possible during
-     * Tcl initialization.
+     * TIP #280 Initialize tracking. Do not push on the frame stack yet.
+     *
+     * We may continue counting based on a specific context (CTX), or open a
+     * new context, either for a sourced script, or 'eval'. For sourced files
+     * we always have a path object, even if nothing was specified in the
+     * interp itself. That makes code using it simpler as NULL checks can be
+     * left out. Sourced file without path in the 'scriptFile' is possible
+     * during Tcl initialization.
      */
 
     if (iPtr->evalFlags & TCL_EVAL_CTX) {
-        /* Path information comes out of the context. */
+	/*
+	 * Path information comes out of the context.
+	 */
 
-        eeFrame.type           = TCL_LOCATION_SOURCE;
-	eeFrame.data.eval.path = iPtr->invokeCmdFramePtr->data.eval.path;
-	Tcl_IncrRefCount (eeFrame.data.eval.path);
+	eeFramePtr->type = TCL_LOCATION_SOURCE;
+	eeFramePtr->data.eval.path = iPtr->invokeCmdFramePtr->data.eval.path;
+	Tcl_IncrRefCount(eeFramePtr->data.eval.path);
     } else if (iPtr->evalFlags & TCL_EVAL_FILE) {
-	/* Set up for a sourced file */
+	/*
+	 * Set up for a sourced file.
+	 */
 
-        eeFrame.type = TCL_LOCATION_SOURCE;
+	eeFramePtr->type = TCL_LOCATION_SOURCE;
 
 	if (iPtr->scriptFile) {
-	    /* Normalization here, to have the correct pwd. Should have
+	    /*
+	     * Normalization here, to have the correct pwd. Should have
 	     * negligible impact on performance, as the norm should have been
 	     * done already by the 'source' invoking us, and it caches the
-	     * result
+	     * result.
 	     */
 
-	    Tcl_Obj* norm = Tcl_FSGetNormalizedPath (interp, iPtr->scriptFile);
-	    if (!norm) {
-		/* Error message in the interp result */
-		return TCL_ERROR;
+	    Tcl_Obj *norm = Tcl_FSGetNormalizedPath(interp, iPtr->scriptFile);
+
+	    if (norm == NULL) {
+		/*
+		 * Error message in the interp result.
+		 */
+		code = TCL_ERROR;
+		goto error;
 	    }
-	    eeFrame.data.eval.path = norm;
+	    eeFramePtr->data.eval.path = norm;
 	} else {
-	    eeFrame.data.eval.path = Tcl_NewStringObj ("",-1);
+	    TclNewLiteralStringObj(eeFramePtr->data.eval.path, "");
 	}
-	Tcl_IncrRefCount (eeFrame.data.eval.path);
+	Tcl_IncrRefCount(eeFramePtr->data.eval.path);
     } else {
-	/* Set up for plain eval */
+	/*
+	 * Set up for plain eval.
+	 */
 
-	eeFrame.type           = TCL_LOCATION_EVAL;
-	eeFrame.data.eval.path = NULL;
+	eeFramePtr->type = TCL_LOCATION_EVAL;
+	eeFramePtr->data.eval.path = NULL;
     }
 
-    eeFrame.level     = (iPtr->cmdFramePtr == NULL
-			 ? 1
-			 : iPtr->cmdFramePtr->level + 1);
-    eeFrame.framePtr  = iPtr->framePtr;
-    eeFrame.nextPtr   = iPtr->cmdFramePtr;
-    eeFrame.nline     = 0;
-    eeFrame.line      = NULL;
-#endif
+    eeFramePtr->level = iPtr->cmdFramePtr ? iPtr->cmdFramePtr->level + 1 : 1;
+    eeFramePtr->framePtr = iPtr->framePtr;
+    eeFramePtr->nextPtr = iPtr->cmdFramePtr;
+    eeFramePtr->nline = 0;
+    eeFramePtr->line = NULL;
 
     iPtr->evalFlags = 0;
     do {
-	if (Tcl_ParseCommand(interp, p, bytesLeft, nested, &parse)
-	        != TCL_OK) {
+	if (Tcl_ParseCommand(interp, p, bytesLeft, 0, parsePtr) != TCL_OK) {
 	    code = TCL_ERROR;
 	    goto error;
 	}
-	gotParse = 1; 
-
-	if (nested && parse.term == (script + numBytes)) {
-	    /*
-	     * A nested script can only terminate in ']'. If
-	     * the parsing got terminated at the end of the script,
-	     * there was no closing ']'.  Report the syntax error.
-	     */
 
-	    code = TCL_ERROR;
-	    goto error;
-	}
-
-#ifdef TCL_TIP280
 	/*
 	 * TIP #280 Track lines. The parser may have skipped text till it
-	 * found the command we are now at. We have count the lines in this
+	 * found the command we are now at. We have to count the lines in this
 	 * block, and do not forget invisible continuation lines.
 	 */
 
-	TclAdvanceLines         (&line, p, parse.commandStart);
+	TclAdvanceLines(&line, p, parsePtr->commandStart);
 	TclAdvanceContinuations (&line, &clNext,
-				 parse.commandStart - outerScript);
-#endif
+				 parsePtr->commandStart - outerScript);
 
-	if (parse.numWords > 0) {
-#ifdef TCL_TIP280
+	gotParse = 1;
+	if (parsePtr->numWords > 0) {
 	    /*
 	     * TIP #280. Track lines within the words of the current
 	     * command. We use a separate pointer into the table of
@@ -4117,77 +4233,138 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 	     * per-command parsing.
 	     */
 
-	    int         wordLine   = line;
-	    CONST char* wordStart  = parse.commandStart;
+	    int wordLine  = line;
+	    const char *wordStart = parsePtr->commandStart;
 	    int*        wordCLNext = clNext;
-#endif
 
 	    /*
 	     * Generate an array of objects for the words of the command.
 	     */
-    
-	    if (parse.numWords <= NUM_STATIC_OBJS) {
-		objv = staticObjArray;
-	    } else {
-		objv = (Tcl_Obj **) ckalloc((unsigned)
-		    (parse.numWords * sizeof (Tcl_Obj *)));
-	    }
 
-#ifdef TCL_TIP280
-	    eeFrame.nline = parse.numWords;
-	    eeFrame.line  = (int*) ckalloc((unsigned)
-		  (parse.numWords * sizeof (int)));
-#endif
+	    unsigned int objectsNeeded = 0;
+	    unsigned int numWords = parsePtr->numWords;
 
-	    for (objectsUsed = 0, tokenPtr = parse.tokenPtr;
-		 objectsUsed < parse.numWords;
-		 objectsUsed++, tokenPtr += (tokenPtr->numComponents + 1)) {
-#ifndef TCL_TIP280
-		code = Tcl_EvalTokensStandard(interp, tokenPtr+1, 
-		            tokenPtr->numComponents);
-#else
-	        /*
-		 * TIP #280. Track lines to current word. Save the
-		 * information on a per-word basis, signaling dynamic words as
-		 * needed. Make the information available to the recursively
-		 * called evaluator as well, including the type of context
-		 * (source vs. eval).
+	    if (numWords > minObjs) {
+		expand = (int *) ckalloc(numWords * sizeof(int));
+		objvSpace = (Tcl_Obj **)
+			ckalloc(numWords * sizeof(Tcl_Obj *));
+		lineSpace = (int *) ckalloc(numWords * sizeof(int));
+	    }
+	    expandRequested = 0;
+	    objv = objvSpace;
+	    lines = lineSpace;
+
+	    for (objectsUsed = 0, tokenPtr = parsePtr->tokenPtr;
+		    objectsUsed < numWords;
+		    objectsUsed++, tokenPtr += tokenPtr->numComponents+1) {
+		/*
+		 * TIP #280. Track lines to current word. Save the information
+		 * on a per-word basis, signaling dynamic words as needed.
+		 * Make the information available to the recursively called
+		 * evaluator as well, including the type of context (source
+		 * vs. eval).
 		 */
 
-		TclAdvanceLines         (&wordLine, wordStart, tokenPtr->start);
+		TclAdvanceLines(&wordLine, wordStart, tokenPtr->start);
 		TclAdvanceContinuations (&wordLine, &wordCLNext,
 					 tokenPtr->start - outerScript);
 		wordStart = tokenPtr->start;
 
-		eeFrame.line [objectsUsed] = (TclWordKnownAtCompileTime (tokenPtr)
-					      ? wordLine
-					      : -1);
+		lines[objectsUsed] = TclWordKnownAtCompileTime(tokenPtr, NULL)
+			? wordLine : -1;
 
-	        if (eeFrame.type == TCL_LOCATION_SOURCE) {
+		if (eeFramePtr->type == TCL_LOCATION_SOURCE) {
 		    iPtr->evalFlags |= TCL_EVAL_FILE;
 		}
 
-		code = EvalTokensStandard(interp, tokenPtr+1, 
-		            tokenPtr->numComponents, wordLine,
-			    wordCLNext, outerScript);
+		code = TclSubstTokens(interp, tokenPtr+1,
+			tokenPtr->numComponents, NULL, wordLine,
+		        wordCLNext, outerScript);
 
 		iPtr->evalFlags = 0;
-#endif
 
-		if (code == TCL_OK) {
-		    objv[objectsUsed] = Tcl_GetObjResult(interp);
-		    Tcl_IncrRefCount(objv[objectsUsed]);
-#ifdef TCL_TIP280
-		    if (wordCLNext) {
-			TclContinuationsEnterDerived (objv[objectsUsed],
-				      wordStart - outerScript, wordCLNext);
+		if (code != TCL_OK) {
+		    goto error;
+		}
+		objv[objectsUsed] = Tcl_GetObjResult(interp);
+		Tcl_IncrRefCount(objv[objectsUsed]);
+		if (tokenPtr->type == TCL_TOKEN_EXPAND_WORD) {
+		    int numElements;
+
+		    code = TclListObjLength(interp, objv[objectsUsed],
+			    &numElements);
+		    if (code == TCL_ERROR) {
+			/*
+			 * Attempt to expand a non-list.
+			 */
+
+			Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+				"\n    (expanding word %d)", objectsUsed));
+			Tcl_DecrRefCount(objv[objectsUsed]);
+			goto error;
 		    }
-#endif
+		    expandRequested = 1;
+		    expand[objectsUsed] = 1;
+
+		    objectsNeeded += (numElements ? numElements : 1);
 		} else {
-		    goto error;
+		    expand[objectsUsed] = 0;
+		    objectsNeeded++;
+		}
+
+		if (wordCLNext) {
+		    TclContinuationsEnterDerived (objv[objectsUsed],
+				  wordStart - outerScript, wordCLNext);
+		}
+	    } /* for loop */
+	    if (expandRequested) {
+		/*
+		 * Some word expansion was requested. Check for objv resize.
+		 */
+
+		Tcl_Obj **copy = objvSpace;
+		int *lcopy = lineSpace;
+		int wordIdx = numWords;
+		int objIdx = objectsNeeded - 1;
+
+		if ((numWords > minObjs) || (objectsNeeded >  minObjs)) {
+		    objv = objvSpace = (Tcl_Obj **)
+			    ckalloc(objectsNeeded * sizeof(Tcl_Obj *));
+		    lines = lineSpace = (int *)
+			    ckalloc(objectsNeeded * sizeof(int));
+		}
+
+		objectsUsed = 0;
+		while (wordIdx--) {
+		    if (expand[wordIdx]) {
+			int numElements;
+			Tcl_Obj **elements, *temp = copy[wordIdx];
+
+			Tcl_ListObjGetElements(NULL, temp, &numElements,
+				&elements);
+			objectsUsed += numElements;
+			while (numElements--) {
+			    lines[objIdx] = -1;
+			    objv[objIdx--] = elements[numElements];
+			    Tcl_IncrRefCount(elements[numElements]);
+			}
+			Tcl_DecrRefCount(temp);
+		    } else {
+			lines[objIdx] = lcopy[wordIdx];
+			objv[objIdx--] = copy[wordIdx];
+			objectsUsed++;
+		    }
+		}
+		objv += objIdx+1;
+
+		if (copy != stackObjArray) {
+		    ckfree((char *) copy);
+		}
+		if (lcopy != linesStack) {
+		    ckfree((char *) lcopy);
 		}
 	    }
-    
+
 	    /*
 	     * Execute the command and free the objects for its words.
 	     *
@@ -4198,29 +4375,28 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 	     * have been executed.
 	     */
 
-#ifdef TCL_TIP280
-	    eeFrame.cmd.str.cmd = parse.commandStart;
-	    eeFrame.cmd.str.len = parse.commandSize;
+	    eeFramePtr->cmd.str.cmd = parsePtr->commandStart;
+	    eeFramePtr->cmd.str.len = parsePtr->commandSize;
 
-	    if (parse.term == parse.commandStart + parse.commandSize - 1) {
-		eeFrame.cmd.str.len --;
+	    if (parsePtr->term ==
+		    parsePtr->commandStart + parsePtr->commandSize - 1) {
+		eeFramePtr->cmd.str.len--;
 	    }
 
-	    TclArgumentEnter (interp, objv, objectsUsed, &eeFrame);
-	    iPtr->cmdFramePtr = &eeFrame;
-#endif
-	    iPtr->numLevels++;    
-	    code = TclEvalObjvInternal(interp, objectsUsed, objv, 
-	            parse.commandStart, parse.commandSize, 0);
+	    eeFramePtr->nline = objectsUsed;
+	    eeFramePtr->line = lines;
+
+	    TclArgumentEnter (interp, objv, objectsUsed, eeFramePtr);
+	    iPtr->cmdFramePtr = eeFramePtr;
+	    iPtr->numLevels++;
+	    code = TclEvalObjvInternal(interp, objectsUsed, objv,
+		    parsePtr->commandStart, parsePtr->commandSize, 0);
 	    iPtr->numLevels--;
-#ifdef TCL_TIP280
 	    iPtr->cmdFramePtr = iPtr->cmdFramePtr->nextPtr;
 	    TclArgumentRelease (interp, objv, objectsUsed);
 
-	    ckfree ((char*) eeFrame.line);
-	    eeFrame.line  = NULL;
-	    eeFrame.nline = 0;
-#endif
+	    eeFramePtr->line = NULL;
+	    eeFramePtr->nline = 0;
 
 	    if (code != TCL_OK) {
 		goto error;
@@ -4229,9 +4405,21 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 		Tcl_DecrRefCount(objv[i]);
 	    }
 	    objectsUsed = 0;
-	    if (objv != staticObjArray) {
-		ckfree((char *) objv);
-		objv = staticObjArray;
+	    if (objvSpace != stackObjArray) {
+		ckfree((char *) objvSpace);
+		objvSpace = stackObjArray;
+		ckfree((char *) lineSpace);
+		lineSpace = linesStack;
+	    }
+
+	    /*
+	     * Free expand separately since objvSpace could have been
+	     * reallocated above.
+	     */
+
+	    if (expand != expandStack) {
+		ckfree((char *) expand);
+		expand = expandStack;
 	    }
 	}
 
@@ -4242,214 +4430,91 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
 	 * executed command.
 	 */
 
-	next = parse.commandStart + parse.commandSize;
+	next = parsePtr->commandStart + parsePtr->commandSize;
 	bytesLeft -= next - p;
 	p = next;
-#ifdef TCL_TIP280
-	TclAdvanceLines (&line, parse.commandStart, p);
-#endif
-	Tcl_FreeParse(&parse);
+	TclAdvanceLines(&line, parsePtr->commandStart, p);
+	Tcl_FreeParse(parsePtr);
 	gotParse = 0;
-	if (nested && (*parse.term == ']')) {
-	    /*
-	     * We get here in the special case where the TCL_BRACKET_TERM
-	     * flag was set in the interpreter and the latest parsed command
-	     * was terminated by the matching close-bracket we seek.
-	     * Return immediately.
-	     */
-
-	    iPtr->termOffset = (p - 1) - script;
-	    iPtr->varFramePtr = savedVarFramePtr;
-#ifndef TCL_TIP280
-	    return TCL_OK;
-#else
-	    code = TCL_OK;
-	    goto cleanup_return;
-#endif
-	}
     } while (bytesLeft > 0);
-
-    if (nested) {
-	/*
-	 * This nested script did not terminate in ']', it is an error.
-	 */
-	
-	code = TCL_ERROR;
-	goto error;
-    }
-    
-    iPtr->termOffset = p - script;
     iPtr->varFramePtr = savedVarFramePtr;
-#ifndef TCL_TIP280
-    return TCL_OK;
-#else
     code = TCL_OK;
     goto cleanup_return;
-#endif
 
-    error:
+  error:
     /*
-     * Generate various pieces of error information, such as the line
-     * number where the error occurred and information to add to the
-     * errorInfo variable.  Then free resources that had been allocated
-     * to the command.
+     * Generate and log various pieces of error information.
      */
 
     if (iPtr->numLevels == 0) {
 	if (code == TCL_RETURN) {
 	    code = TclUpdateReturnInfo(iPtr);
 	}
-	if ((code != TCL_OK) && (code != TCL_ERROR) 
-		&& !allowExceptions) {
+	if ((code != TCL_OK) && (code != TCL_ERROR) && !allowExceptions) {
 	    ProcessUnexpectedResult(interp, code);
 	    code = TCL_ERROR;
 	}
     }
-    if ((code == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) { 
-	commandLength = parse.commandSize;
-	if (parse.term == parse.commandStart + commandLength - 1) {
+    if ((code == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) {
+	commandLength = parsePtr->commandSize;
+	if (parsePtr->term == parsePtr->commandStart + commandLength - 1) {
 	    /*
 	     * The terminator character (such as ; or ]) of the command where
 	     * the error occurred is the last character in the parsed command.
 	     * Reduce the length by one so that the error message doesn't
 	     * include the terminator character.
 	     */
-	    
+
 	    commandLength -= 1;
 	}
-	Tcl_LogCommandInfo(interp, script, parse.commandStart, commandLength);
+	Tcl_LogCommandInfo(interp, script, parsePtr->commandStart,
+		commandLength);
     }
-    
+    iPtr->flags &= ~ERR_ALREADY_LOGGED;
+
+    /*
+     * Then free resources that had been allocated to the command.
+     */
+
     for (i = 0; i < objectsUsed; i++) {
 	Tcl_DecrRefCount(objv[i]);
     }
     if (gotParse) {
-	Tcl_FreeParse(&parse);
+	Tcl_FreeParse(parsePtr);
     }
-    if (objv != staticObjArray) {
-	ckfree((char *) objv);
+    if (objvSpace != stackObjArray) {
+	ckfree((char *) objvSpace);
+	ckfree((char *) lineSpace);
     }
-    iPtr->varFramePtr = savedVarFramePtr;
-
-    /*
-     * All that's left to do before returning is to set iPtr->termOffset
-     * to point past the end of the script we just evaluated.
-     */
-
-    next = parse.commandStart + parse.commandSize;
-    bytesLeft -= next - p;
-    p = next;
-
-    if (!nested) {
-	iPtr->termOffset = p - script;
-#ifndef TCL_TIP280
-	return code;
-#else
-	goto cleanup_return;
-#endif
+    if (expand != expandStack) {
+	ckfree((char *) expand);
     }
+    iPtr->varFramePtr = savedVarFramePtr;
 
+ cleanup_return:
     /*
-     * When we are nested (the TCL_BRACKET_TERM flag was set in the
-     * interpreter), we must find the matching close-bracket to
-     * end the script we are evaluating.
-     *
-     * When our return code is TCL_CONTINUE or TCL_RETURN, we want
-     * to correctly set iPtr->termOffset to point to that matching
-     * close-bracket so our caller can move to the part of the
-     * string beyond the script we were asked to evaluate.
-     * So we try to parse past the rest of the commands.
+     * TIP #280. Release the local CmdFrame, and its contents.
      */
 
-    next = NULL;
-    while (bytesLeft && (*parse.term != ']')) {
-	if (TCL_OK != Tcl_ParseCommand(NULL, p, bytesLeft, 1, &parse)) {
-	    /*
-	     * Syntax error.  Set the termOffset to the beginning of
-	     * the last command parsed.
-	     */
-
-	    if (next == NULL) {
-	        iPtr->termOffset = (parse.commandStart - 1) - script;
-	    } else {
-	        iPtr->termOffset = (next - 1) - script;
-	    }
-#ifndef TCL_TIP280
-	    return code;
-#else
-	    goto cleanup_return;
-#endif
-	}
-	next = parse.commandStart + parse.commandSize;
-	bytesLeft -= next - p;
-	p = next;
-	next = parse.commandStart;
-	Tcl_FreeParse(&parse);
-    }
-
-    if (bytesLeft) {
-	/* 
-	 * parse.term points to the close-bracket.
-	 */
-
-	iPtr->termOffset = parse.term - script;
-    } else if (parse.term == script + numBytes) {
-	/*
-	 * There was no close-bracket.  Syntax error.
-	 */
-
-	iPtr->termOffset = parse.term - script;
-	Tcl_SetObjResult(interp,
-		Tcl_NewStringObj("missing close-bracket", -1));
-#ifndef TCL_TIP280
-	return TCL_ERROR;
-#else
-	code = TCL_ERROR;
-	goto cleanup_return;
-#endif
-    } else if (*parse.term != ']') {
-	/*
-	 * There was no close-bracket.  Syntax error.
-	 */
-
-	iPtr->termOffset = (parse.term + 1) - script;
-	Tcl_SetObjResult(interp,
-		Tcl_NewStringObj("missing close-bracket", -1));
-#ifndef TCL_TIP280
-	return TCL_ERROR;
-#else
-	code = TCL_ERROR;
-	goto cleanup_return;
-#endif
-    } else {
-	/* 
-	 * parse.term points to the close-bracket.
-	 */
-	iPtr->termOffset = parse.term - script;
+    if (eeFramePtr->type == TCL_LOCATION_SOURCE) {
+	Tcl_DecrRefCount(eeFramePtr->data.eval.path);
     }
+    TclStackFree(interp, linesStack);
+    TclStackFree(interp, expandStack);
+    TclStackFree(interp, stackObjArray);
+    TclStackFree(interp, eeFramePtr);
+    TclStackFree(interp, parsePtr);
 
-#ifdef TCL_TIP280
- cleanup_return:
-    /* TIP #280. Release the local CmdFrame, and its contents. */
-
-    if (eeFrame.line != NULL) {
-        ckfree ((char*) eeFrame.line);
-    }
-    if (eeFrame.type == TCL_LOCATION_SOURCE) {
-        Tcl_DecrRefCount (eeFrame.data.eval.path);
-    }
-#endif
     return code;
 }
 
-#ifdef TCL_TIP280
 /*
  *----------------------------------------------------------------------
  *
  * TclAdvanceLines --
  *
- *	This procedure is a helper which counts the number of lines
- *	in a block of text and advances an external counter.
+ *	This function is a helper which counts the number of lines in a block
+ *	of text and advances an external counter.
  *
  * Results:
  *	None.
@@ -4462,15 +4527,16 @@ EvalEx(interp, script, numBytes, flags, line, clNextOuter, outerScript)
  */
 
 void
-TclAdvanceLines (line,start,end)
-     int*        line;
-     CONST char* start;
-     CONST char* end;
+TclAdvanceLines(
+    int *line,
+    const char *start,
+    const char *end)
 {
-    CONST char* p;
+    register const char *p;
+
     for (p = start; p < end; p++) {
-        if (*p == '\n') {
-	  (*line) ++;
+	if (*p == '\n') {
+	    (*line)++;
 	}
     }
 }
@@ -4504,11 +4570,11 @@ TclAdvanceContinuations (line,clNextPtrPtr,loc)
     /*
      * Track the invisible continuation lines embedded in a script, if
      * any. Here they are just spaces (already). They were removed by
-     * EvalTokensStandard() via TclParseBackslash().
+     * TclSubstTokens() via TclParseBackslash().
      *
-     * *clNextPtrPtr             <=> We have continuation lines to track.
-     * **clNextPtrPtr >= 0       <=> We are not beyond the last possible location.
-     * loc >= **clNextPtrPtr     <=> We stepped beyond the current cont. line.
+     * *clNextPtrPtr         <=> We have continuation lines to track.
+     * **clNextPtrPtr >= 0   <=> We are not beyond the last possible location.
+     * loc >= **clNextPtrPtr <=> We stepped beyond the current cont. line.
      */
 
     while (*clNextPtrPtr && (**clNextPtrPtr >= 0) && (loc >= **clNextPtrPtr)) {
@@ -4647,7 +4713,7 @@ TclArgumentRelease(interp,objv,objc)
  *
  *	This procedure is a helper for the TIP #280 uplevel extension.
  *	It enters location references for the literal arguments of commands
- *	in bytecode about to be executed. Only the first entry has the actual
+ *	in bytecode about to be invoked. Only the first entry has the actual
  *	data, further entries simply count the usage up.
  *
  * Results:
@@ -4661,7 +4727,7 @@ TclArgumentRelease(interp,objv,objc)
  */
 
 void
-TclArgumentBCEnter(interp, objv, objc, codePtr, cfPtr, pc)
+TclArgumentBCEnter(interp,objv,objc,codePtr,cfPtr,pc)
      Tcl_Interp* interp;
      Tcl_Obj*    objv[];
      int         objc;
@@ -4674,12 +4740,12 @@ TclArgumentBCEnter(interp, objv, objc, codePtr, cfPtr, pc)
 
     if (hePtr) {
 	ExtCmdLoc* eclPtr = (ExtCmdLoc*) Tcl_GetHashValue (hePtr);
-	hePtr = Tcl_FindHashEntry(&eclPtr->litInfo, (char*) pc);
+	hePtr = Tcl_FindHashEntry(&eclPtr->litInfo, INT2PTR(pc));
 
 	if (hePtr) {
-	    int  word;
-	    int  cmd  = (int) Tcl_GetHashValue(hePtr);
+	    int  cmd  = PTR2INT(Tcl_GetHashValue(hePtr));
 	    ECL* ePtr = &eclPtr->loc[cmd];
+	    int word;
 
 	    /*
 	     * A few truths ...
@@ -4691,6 +4757,10 @@ TclArgumentBCEnter(interp, objv, objc, codePtr, cfPtr, pc)
 	     * have to save them at compile time.
 	     */
 
+	    if (ePtr->nline != objc) {
+		Tcl_Panic ("TIP 280 data structure inconsistency");
+	    }
+
 	    for (word = 1; word < objc; word++) {
 		if (ePtr->line[word] >= 0) {
 		    int isnew;
@@ -4747,7 +4817,7 @@ TclArgumentBCEnter(interp, objv, objc, codePtr, cfPtr, pc)
  */
 
 void
-TclArgumentBCRelease(interp, objv, objc, codePtr, pc)
+TclArgumentBCRelease(interp,objv,objc,codePtr,pc)
      Tcl_Interp* interp;
      Tcl_Obj*    objv[];
      int         objc;
@@ -4759,10 +4829,10 @@ TclArgumentBCRelease(interp, objv, objc, codePtr, pc)
 
     if (hePtr) {
 	ExtCmdLoc* eclPtr = (ExtCmdLoc*) Tcl_GetHashValue (hePtr);
-	hePtr = Tcl_FindHashEntry(&eclPtr->litInfo, (char*) pc);
+	hePtr = Tcl_FindHashEntry(&eclPtr->litInfo, INT2PTR(pc));
 
 	if (hePtr) {
-	    int  cmd  = (int) Tcl_GetHashValue(hePtr);
+	    int  cmd  = PTR2INT(Tcl_GetHashValue(hePtr));
 	    ECL* ePtr = &eclPtr->loc[cmd];
 	    int word;
 
@@ -4776,7 +4846,7 @@ TclArgumentBCRelease(interp, objv, objc, codePtr, pc)
 						    (char *) objv[word]);
 		    if (hPtr) {
 			CFWordBC* cfwPtr = (CFWordBC*) Tcl_GetHashValue (hPtr);
- 
+
 			if (cfwPtr->prevPtr) {
 			    Tcl_SetHashValue(hPtr, cfwPtr->prevPtr);
 			} else {
@@ -4821,16 +4891,16 @@ TclArgumentGet(interp,obj,cfPtrPtr,wordPtr)
     CmdFrame*      framePtr;
 
     /*
-     * An object which either has no string rep guaranteed to have been
-     * generated dynamically: bail out, this cannot have a usable absolute
-     * location. _Do not touch_ the information the set up by the caller. It
-     * knows better than us.
+     * An object which either has no string rep or else is a canonical list is
+     * guaranteed to have been generated dynamically: bail out, this cannot
+     * have a usable absolute location. _Do not touch_ the information the set
+     * up by the caller. It knows better than us.
      */
 
-    if (!obj->bytes) {
+    if ((obj->bytes == NULL) || TclListObjIsCanonical(obj)) {
 	return;
     }
-    
+
     /*
      * First look for location information recorded in the argument
      * stack. That is nearest.
@@ -4850,36 +4920,34 @@ TclArgumentGet(interp,obj,cfPtrPtr,wordPtr)
      */
 
     hPtr = Tcl_FindHashEntry (iPtr->lineLABCPtr, (char *) obj);
+
     if (hPtr) {
 	CFWordBC* cfwPtr = (CFWordBC*) Tcl_GetHashValue (hPtr);
 
 	framePtr = cfwPtr->framePtr;
-	framePtr->data.tebc.pc = (char*) ((ByteCode*)
-		  framePtr->data.tebc.codePtr)->codeStart + cfwPtr->pc;
+	framePtr->data.tebc.pc = (char *) (((ByteCode*)
+		framePtr->data.tebc.codePtr)->codeStart + cfwPtr->pc);
 	*cfPtrPtr = cfwPtr->framePtr;
 	*wordPtr  = cfwPtr->word;
 	return;
     }
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_Eval --
  *
- *	Execute a Tcl command in a string.  This procedure executes the
- *	script directly, rather than compiling it to bytecodes.  Before
- *	the arrival of the bytecode compiler in Tcl 8.0 Tcl_Eval was
- *	the main procedure used for executing Tcl commands, but nowadays
- *	it isn't used much.
+ *	Execute a Tcl command in a string. This function executes the script
+ *	directly, rather than compiling it to bytecodes. Before the arrival of
+ *	the bytecode compiler in Tcl 8.0 Tcl_Eval was the main function used
+ *	for executing Tcl commands, but nowadays it isn't used much.
  *
  * Results:
- *	The return value is one of the return codes defined in tcl.h
- *	(such as TCL_OK), and interp's result contains a value
- *	to supplement the return code. The value of the result
- *	will persist only until the next call to Tcl_Eval or Tcl_EvalObj:
- *	you must copy it or lose it!
+ *	The return value is one of the return codes defined in tcl.h (such as
+ *	TCL_OK), and interp's result contains a value to supplement the return
+ *	code. The value of the result will persist only until the next call to
+ *	Tcl_Eval or Tcl_EvalObj: you must copy it or lose it!
  *
  * Side effects:
  *	Can be almost arbitrary, depending on the commands in the script.
@@ -4888,21 +4956,20 @@ TclArgumentGet(interp,obj,cfPtrPtr,wordPtr)
  */
 
 int
-Tcl_Eval(interp, string)
-    Tcl_Interp *interp;		/* Token for command interpreter (returned
-				 * by previous call to Tcl_CreateInterp). */
-    CONST char *string;		/* Pointer to TCL command to execute. */
+Tcl_Eval(
+    Tcl_Interp *interp,		/* Token for command interpreter (returned by
+				 * previous call to Tcl_CreateInterp). */
+    const char *script)		/* Pointer to TCL command to execute. */
 {
-    int code = Tcl_EvalEx(interp, string, -1, 0);
+    int code = Tcl_EvalEx(interp, script, -1, 0);
 
     /*
-     * For backwards compatibility with old C code that predates the
-     * object system in Tcl 8.0, we have to mirror the object result
-     * back into the string result (some callers may expect it there).
+     * For backwards compatibility with old C code that predates the object
+     * system in Tcl 8.0, we have to mirror the object result back into the
+     * string result (some callers may expect it there).
      */
 
-    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	    TCL_VOLATILE);
+    (void) Tcl_GetStringResult(interp);
     return code;
 }
 
@@ -4924,17 +4991,17 @@ Tcl_Eval(interp, string)
  */
 
 int
-Tcl_EvalObj(interp, objPtr)
-    Tcl_Interp * interp;
-    Tcl_Obj * objPtr;
+Tcl_EvalObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr)
 {
     return Tcl_EvalObjEx(interp, objPtr, 0);
 }
 
 int
-Tcl_GlobalEvalObj(interp, objPtr)
-    Tcl_Interp * interp;
-    Tcl_Obj * objPtr;
+Tcl_GlobalEvalObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr)
 {
     return Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_GLOBAL);
 }
@@ -4945,322 +5012,272 @@ Tcl_GlobalEvalObj(interp, objPtr)
  * Tcl_EvalObjEx, TclEvalObjEx --
  *
  *	Execute Tcl commands stored in a Tcl object. These commands are
- *	compiled into bytecodes if necessary, unless TCL_EVAL_DIRECT
- *	is specified.
+ *	compiled into bytecodes if necessary, unless TCL_EVAL_DIRECT is
+ *	specified.
  *
  * Results:
- *	The return value is one of the return codes defined in tcl.h
- *	(such as TCL_OK), and the interpreter's result contains a value
- *	to supplement the return code.
+ *	The return value is one of the return codes defined in tcl.h (such as
+ *	TCL_OK), and the interpreter's result contains a value to supplement
+ *	the return code.
  *
  * Side effects:
- *	The object is converted, if necessary, to a ByteCode object that
- *	holds the bytecode instructions for the commands. Executing the
- *	commands will almost certainly have side effects that depend
- *	on those commands.
- *
- *	Just as in Tcl_Eval, interp->termOffset is set to the offset of the
- *	last character executed in the objPtr's string.
+ *	The object is converted, if necessary, to a ByteCode object that holds
+ *	the bytecode instructions for the commands. Executing the commands
+ *	will almost certainly have side effects that depend on those commands.
  *
  * TIP #280 : Keep public API, internally extended API.
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_EvalObjEx(interp, objPtr, flags)
-    Tcl_Interp *interp;			/* Token for command interpreter
-					 * (returned by a previous call to
-					 * Tcl_CreateInterp). */
-    register Tcl_Obj *objPtr;		/* Pointer to object containing
-					 * commands to execute. */
-    int flags;				/* Collection of OR-ed bits that
-					 * control the evaluation of the
-					 * script.  Supported values are
-					 * TCL_EVAL_GLOBAL and
-					 * TCL_EVAL_DIRECT. */
+Tcl_EvalObjEx(
+    Tcl_Interp *interp,		/* Token for command interpreter (returned by
+				 * a previous call to Tcl_CreateInterp). */
+    register Tcl_Obj *objPtr,	/* Pointer to object containing commands to
+				 * execute. */
+    int flags)			/* Collection of OR-ed bits that control the
+				 * evaluation of the script. Supported values
+				 * are TCL_EVAL_GLOBAL and TCL_EVAL_DIRECT. */
 {
-#ifdef TCL_TIP280
-  return TclEvalObjEx (interp, objPtr, flags, NULL, 0);
+    return TclEvalObjEx(interp, objPtr, flags, NULL, 0);
 }
 
 int
-TclEvalObjEx(interp, objPtr, flags, invoker, word)
-    Tcl_Interp *interp;			/* Token for command interpreter
-					 * (returned by a previous call to
-					 * Tcl_CreateInterp). */
-    register Tcl_Obj *objPtr;		/* Pointer to object containing
-					 * commands to execute. */
-    int flags;				/* Collection of OR-ed bits that
-					 * control the evaluation of the
-					 * script.  Supported values are
-					 * TCL_EVAL_GLOBAL and
-					 * TCL_EVAL_DIRECT. */
-    CONST CmdFrame* invoker; /* Frame of the command doing the eval  */
-    int             word;    /* Index of the word which is in objPtr */
+TclEvalObjEx(
+    Tcl_Interp *interp,		/* Token for command interpreter (returned by
+				 * a previous call to Tcl_CreateInterp). */
+    register Tcl_Obj *objPtr,	/* Pointer to object containing commands to
+				 * execute. */
+    int flags,			/* Collection of OR-ed bits that control the
+				 * evaluation of the script. Supported values
+				 * are TCL_EVAL_GLOBAL and TCL_EVAL_DIRECT. */
+    const CmdFrame *invoker,	/* Frame of the command doing the eval. */
+    int word)			/* Index of the word which is in objPtr. */
 {
-#endif
     register Interp *iPtr = (Interp *) interp;
     char *script;
     int numSrcBytes;
     int result;
-    CallFrame *savedVarFramePtr;	/* Saves old copy of iPtr->varFramePtr
-					 * in case TCL_EVAL_GLOBAL was set. */
-    int allowExceptions = (iPtr->evalFlags & TCL_ALLOW_EXCEPTIONS);
+    CallFrame *savedVarFramePtr;/* Saves old copy of iPtr->varFramePtr in case
+				 * TCL_EVAL_GLOBAL was set. */
 
     Tcl_IncrRefCount(objPtr);
 
-    if ((iPtr->flags & USE_EVAL_DIRECT) || (flags & TCL_EVAL_DIRECT)) {
+    /* Pure List Optimization (no string representation). In this case, we can
+     * safely use Tcl_EvalObjv instead and get an appreciable improvement in
+     * execution speed. This is because it allows us to avoid a setFromAny
+     * step that would just pack everything into a string and back out again.
+     *
+     * This also preserves any associations between list elements and location
+     * information for such elements.
+     *
+     * This restriction has been relaxed a bit by storing in lists whether
+     * they are "canonical" or not (a canonical list being one that is either
+     * pure or that has its string rep derived by UpdateStringOfList from the
+     * internal rep).
+     */
+
+    if (TclListObjIsCanonical(objPtr)) {
+	/*
+	 * TIP #280 Structures for tracking lines. As we know that this is
+	 * dynamic execution we ignore the invoker, even if known.
+	 */
+
+	int nelements;
+	Tcl_Obj **elements, *copyPtr = TclListObjCopy(NULL, objPtr);
+	CmdFrame *eoFramePtr = (CmdFrame *)
+		TclStackAlloc(interp, sizeof(CmdFrame));
+
+	eoFramePtr->type = TCL_LOCATION_EVAL_LIST;
+	eoFramePtr->level = (iPtr->cmdFramePtr == NULL?  1 
+		: iPtr->cmdFramePtr->level + 1);
+	eoFramePtr->framePtr = iPtr->framePtr;
+	eoFramePtr->nextPtr = iPtr->cmdFramePtr;
+
+	eoFramePtr->nline = 0;
+	eoFramePtr->line = NULL;
+
+	eoFramePtr->cmd.listPtr  = objPtr;
+	Tcl_IncrRefCount(eoFramePtr->cmd.listPtr);
+	eoFramePtr->data.eval.path = NULL;
+
+	/*
+	 * TIP #280 We do _not_ compute all the line numbers for the words
+	 * in the command. For the eval of a pure list the most sensible
+	 * choice is to put all words on line 1. Given that we neither
+	 * need memory for them nor compute anything.  'line' is left
+	 * NULL. The two places using this information (TclInfoFrame, and
+	 * TclInitCompileEnv), are special-cased to use the proper line
+	 * number directly instead of accessing the 'line' array.
+	 */
+
+	Tcl_ListObjGetElements(NULL, copyPtr, &nelements, &elements);
+
+	iPtr->cmdFramePtr = eoFramePtr;
+	result = Tcl_EvalObjv(interp, nelements, elements, flags);
+
+	Tcl_DecrRefCount(copyPtr);
+	iPtr->cmdFramePtr = iPtr->cmdFramePtr->nextPtr;
+	Tcl_DecrRefCount(eoFramePtr->cmd.listPtr);
+	TclStackFree(interp, eoFramePtr);
+    } else if (flags & TCL_EVAL_DIRECT) {
 	/*
 	 * We're not supposed to use the compiler or byte-code interpreter.
-	 * Let Tcl_EvalEx evaluate the command directly (and probably
-	 * more slowly).
+	 * Let Tcl_EvalEx evaluate the command directly (and probably more
+	 * slowly).
+	 */
+
+	/*
+	 * TIP #280. Propagate context as much as we can. Especially if the
+	 * script to evaluate is a single literal it makes sense to look if
+	 * our context is one with absolute line numbers we can then track
+	 * into the literal itself too.
+	 *
+	 * See also tclCompile.c, TclInitCompileEnv, for the equivalent code
+	 * in the bytecode compiler.
+	 */
+
+	/*
+	 * Now we check if we have data about invisible continuation lines for
+	 * the script, and make it available to the direct script parser and
+	 * evaluator we are about to call, if so.
 	 *
-	 * Pure List Optimization (no string representation).  In this
-	 * case, we can safely use Tcl_EvalObjv instead and get an
-	 * appreciable improvement in execution speed.  This is because it
-	 * allows us to avoid a setFromAny step that would just pack
-	 * everything into a string and back out again.
+	 * It may be possible that the script Tcl_Obj* can be free'd while the
+	 * evaluator is using it, leading to the release of the associated
+	 * ContLineLoc structure as well. To ensure that the latter doesn't
+	 * happen we set a lock on it. We release this lock later in this
+	 * function, after the evaluator is done.  The relevant "lineCLPtr"
+	 * hashtable is managed in the file "tclObj.c".
 	 *
-	 * USE_EVAL_DIRECT is a special flag used for testing purpose only
-	 * (ensure we go into the TCL_EVAL_DIRECT path, avoiding opt)
+	 * Another important action is to save (and later restore) the
+	 * continuation line information of the caller, in case we are
+	 * executing nested commands in the eval/direct path.
 	 */
-	if (!(iPtr->flags & USE_EVAL_DIRECT) &&
-		(objPtr->typePtr == &tclListType) && /* is a list... */
-		(objPtr->bytes == NULL) /* ...without a string rep */) {
-	    register List *listRepPtr =
-		(List *) objPtr->internalRep.twoPtrValue.ptr1;
-	    int i, objc = listRepPtr->elemCount;
-
-#define TEOE_PREALLOC 10
-	    Tcl_Obj *staticObjv[TEOE_PREALLOC], **objv = staticObjv;
-
-#ifdef TCL_TIP280
-	    /* TIP #280 Structures for tracking lines.
-	     * As we know that this is dynamic execution we ignore the
-	     * invoker, even if known.
-	     */
-	    CmdFrame eoFrame;
-
-	    eoFrame.type     = TCL_LOCATION_EVAL_LIST;
-	    eoFrame.level    = (iPtr->cmdFramePtr == NULL ?
-				1 :
-				iPtr->cmdFramePtr->level + 1);
-	    eoFrame.framePtr = iPtr->framePtr;
-	    eoFrame.nextPtr  = iPtr->cmdFramePtr;
-	    eoFrame.nline    = 0;
-	    eoFrame.line     = NULL;
-
-	    /* NOTE: Getting the string rep of the list to eval to fill the
-	     * command information required by 'info frame' implies that
-	     * further calls for the same list would not be optimized, as it
-	     * would not be 'pure' anymore. It would also be a waste of time
-	     * as most of the time this information is not needed at all. What
-	     * we do instead is to keep the list obj itself around and have
-	     * 'info frame' sort it out.
-	     */
 
-	    eoFrame.cmd.listPtr  = objPtr;
-	    Tcl_IncrRefCount (eoFrame.cmd.listPtr);
-	    eoFrame.data.eval.path = NULL;
-#endif
-	    if (objc > TEOE_PREALLOC) {
-		objv = (Tcl_Obj **) ckalloc(objc*sizeof(Tcl_Obj *));
-	    }
-#undef TEOE_PREALLOC
-	    /*
-	     * Copy the list elements here, to avoid a segfault if
-	     * objPtr loses its List internal rep [Bug 1119369].
-	     *
-	     * TIP #280 We do _not_ compute all the line numbers for the words
-	     * in the command. For the eval of a pure list the most sensible
-	     * choice is to put all words on line 1. Given that we neither
-	     * need memory for them nor compute anything. 'line' is left
-	     * NULL. The two places using this information (TclInfoFrame, and
-	     * TclInitCompileEnv), are special-cased to use the proper line
-	     * number directly instead of accessing the 'line' array.
-	     */
+	ContLineLoc* saveCLLocPtr = iPtr->scriptCLLocPtr;
+	ContLineLoc* clLocPtr = TclContinuationsGet (objPtr);
 
-	    for (i=0; i < objc; i++) {
-		objv[i] = listRepPtr->elements[i];
-		Tcl_IncrRefCount(objv[i]);
-	    }
+	if (clLocPtr) {
+	    iPtr->scriptCLLocPtr = clLocPtr;
+	    Tcl_Preserve (iPtr->scriptCLLocPtr);
+	} else {
+	    iPtr->scriptCLLocPtr = NULL;
+	}
 
-#ifdef TCL_TIP280
-	    iPtr->cmdFramePtr = &eoFrame;
-#endif
-	    result = Tcl_EvalObjv(interp, objc, objv, flags);
-#ifdef TCL_TIP280
-	    iPtr->cmdFramePtr = iPtr->cmdFramePtr->nextPtr;
-	    Tcl_DecrRefCount (eoFrame.cmd.listPtr);
-#endif
+	if (invoker == NULL) {
+	    /*
+	     * No context, force opening of our own.
+	     */
 
-	    for (i=0; i < objc; i++) {
-		TclDecrRefCount(objv[i]);
-	    }
-	    if (objv != staticObjv) {
-		ckfree((char *) objv);
-	    }
-#ifdef TCL_TIP280
-	    ckfree ((char*) eoFrame.line);
-	    eoFrame.line  = NULL;
-	    eoFrame.nline = 0;
-#endif
-	} else {
-#ifndef TCL_TIP280
 	    script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
 	    result = Tcl_EvalEx(interp, script, numSrcBytes, flags);
-#else
+	} else {
 	    /*
-	     * TIP #280. Propagate context as much as we can. Especially if
-	     * the script to evaluate is a single literal it makes sense to
-	     * look if our context is one with absolute line numbers we can
-	     * then track into the literal itself too.
+	     * We have an invoker, describing the command asking for the
+	     * evaluation of a subordinate script. This script may originate
+	     * in a literal word, or from a variable, etc. Using the line
+	     * array we now check if we have good line information for the
+	     * relevant word. The type of context is relevant as well. In a
+	     * non-'source' context we don't have to try tracking lines.
 	     *
-	     * See also tclCompile.c, TclInitCompileEnv, for the equivalent
-	     * code in the bytecode compiler.
+	     * First see if the word exists and is a literal. If not we go
+	     * through the easy dynamic branch. No need to perform more
+	     * complex invokations.
 	     */
 
-	    /*
-	     * Now we check if we have data about invisible continuation lines
-	     * for the script, and make it available to the direct script
-	     * parser and evaluator we are about to call, if so.
-	     *
-	     * It may be possible that the script Tcl_Obj* can be free'd while
-	     * the evaluator is using it, leading to the release of the
-	     * associated ContLineLoc structure as well. To ensure that the
-	     * latter doesn't happen we set a lock on it. We release this lock
-	     * later in this function, after the evaluator is done.  The
-	     * relevant "lineCLPtr" hashtable is managed in the file
-	     * "tclObj.c".
-	     *
-	     * Another important action is to save (and later restore) the
-	     * continuation line information of the caller, in case we are
-	     * executing nested commands in the eval/direct path.
-	     */
+	    int pc = 0;
+	    CmdFrame *ctxPtr = (CmdFrame *)
+		TclStackAlloc(interp, sizeof(CmdFrame));
 
-	    ContLineLoc* saveCLLocPtr = iPtr->scriptCLLocPtr;
-	    ContLineLoc* clLocPtr = TclContinuationsGet (objPtr);
+	    *ctxPtr = *invoker;
+	    if (invoker->type == TCL_LOCATION_BC) {
+		/*
+		 * Note: Type BC => ctxPtr->data.eval.path is not used.
+		 * ctxPtr->data.tebc.codePtr is used instead.
+		 */
 
-	    if (clLocPtr) {
-		iPtr->scriptCLLocPtr = clLocPtr;
-		Tcl_Preserve (iPtr->scriptCLLocPtr);
-	    } else {
-		iPtr->scriptCLLocPtr = NULL;
+		TclGetSrcInfoForPc(ctxPtr);
+		pc = 1;
 	    }
 
-	    if (invoker == NULL) {
-	        /* No context, force opening of our own */
-	        script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
-		result = Tcl_EvalEx(interp, script, numSrcBytes, flags);
-	    } else {
-		/* We have an invoker, describing the command asking for the
-		 * evaluation of a subordinate script. This script may
-		 * originate in a literal word, or from a variable, etc. Using
-		 * the line array we now check if we have good line
-		 * information for the relevant word. The type of context is
-		 * relevant as well. In a non-'source' context we don't have
-		 * to try tracking lines.
-		 *
-		 * First see if the word exists and is a literal. If not we go
-		 * through the easy dynamic branch. No need to perform more
-		 * complex invokations.
-		 */
+	    script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
 
-		CmdFrame ctx = *invoker;
-		int pc       = 0;
+	    if ((ctxPtr->nline <= word) ||
+		(ctxPtr->line[word] < 0) ||
+		(ctxPtr->type != TCL_LOCATION_SOURCE)) {
+		/*
+		 * Dynamic script, or dynamic context, force our own
+		 * context.
+		 */
 
-		if (invoker->type == TCL_LOCATION_BC) {
-		    /* Note: Type BC => ctx.data.eval.path    is not used.
-		     *                  ctx.data.tebc.codePtr is used instead.
-		     */
-		    TclGetSrcInfoForPc (&ctx);
-		    pc = 1;
-		}
+		result = Tcl_EvalEx(interp, script, numSrcBytes, flags);
 
-                script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
+	    } else {
+		/*
+		 * Absolute context to reuse.
+		 */
 
-		if ((ctx.nline <= word) ||
-		    (ctx.line[word] < 0) ||
-		    (ctx.type != TCL_LOCATION_SOURCE)) {
-		    /* Dynamic script, or dynamic context, force our own
-		     * context */
+		iPtr->invokeCmdFramePtr = ctxPtr;
+		iPtr->evalFlags |= TCL_EVAL_CTX;
 
-		    result = Tcl_EvalEx(interp, script, numSrcBytes, flags);
-		} else {
-		    /* Absolute context available to reuse. */
+		result = TclEvalEx(interp, script, numSrcBytes, flags,
+				   ctxPtr->line[word], NULL, script);
+	    }
 
-		    iPtr->invokeCmdFramePtr = &ctx;
-		    iPtr->evalFlags |= TCL_EVAL_CTX;
+	    if (pc && (ctxPtr->type == TCL_LOCATION_SOURCE)) {
+		/*
+		 * Death of SrcInfo reference.
+		 */
 
-		    result = EvalEx(interp, script, numSrcBytes, flags,
-				    ctx.line [word], NULL, script);
-		}
-		if (pc && (ctx.type == TCL_LOCATION_SOURCE)) {
-		    /* Death of SrcInfo reference. */
-		    Tcl_DecrRefCount(ctx.data.eval.path);
-		}
+		Tcl_DecrRefCount(ctxPtr->data.eval.path);
 	    }
+	    TclStackFree(interp, ctxPtr);
+	}
 
-	    /*
-	     * Now release the lock on the continuation line information, if
-	     * any, and restore the caller's settings.
-	     */
+	/*
+	 * Now release the lock on the continuation line information, if
+	 * any, and restore the caller's settings.
+	 */
 
-	    if (iPtr->scriptCLLocPtr) {
-		Tcl_Release (iPtr->scriptCLLocPtr);
-	    }
-	    iPtr->scriptCLLocPtr = saveCLLocPtr;
-#endif
+	if (iPtr->scriptCLLocPtr) {
+	    Tcl_Release (iPtr->scriptCLLocPtr);
 	}
+	iPtr->scriptCLLocPtr = saveCLLocPtr;
     } else {
 	/*
 	 * Let the compiler/engine subsystem do the evaluation.
 	 *
-	 * TIP #280 The invoker provides us with the context for the
-	 * script. We transfer this to the byte code compiler.
+	 * TIP #280 The invoker provides us with the context for the script.
+	 * We transfer this to the byte code compiler.
 	 */
+	int allowExceptions = (iPtr->evalFlags & TCL_ALLOW_EXCEPTIONS);
 
 	savedVarFramePtr = iPtr->varFramePtr;
 	if (flags & TCL_EVAL_GLOBAL) {
-	    iPtr->varFramePtr = NULL;
+	    iPtr->varFramePtr = iPtr->rootFramePtr;
 	}
 
-#ifndef TCL_TIP280
-	result = TclCompEvalObj(interp, objPtr);
-#else
 	result = TclCompEvalObj(interp, objPtr, invoker, word);
-#endif
 
 	/*
-	 * If we are again at the top level, process any unusual 
-	 * return code returned by the evaluated code. 
+	 * If we are again at the top level, process any unusual return code
+	 * returned by the evaluated code.
 	 */
-	
+
 	if (iPtr->numLevels == 0) {
 	    if (result == TCL_RETURN) {
 		result = TclUpdateReturnInfo(iPtr);
 	    }
-	    if ((result != TCL_OK) && (result != TCL_ERROR) 
-	        && !allowExceptions) {
+	    if ((result != TCL_OK) && (result != TCL_ERROR)
+		    && !allowExceptions) {
 		ProcessUnexpectedResult(interp, result);
 		result = TCL_ERROR;
-
-		/*
-		 * If an error was created here, record information about 
-		 * what was being executed when the error occurred. Remove
-		 * the extra \n added by tclMain.c in the command sent to
-		 * Tcl_LogCommandInfo [Bug 833150].
-		 */
-
-		if (!(iPtr->flags & ERR_ALREADY_LOGGED)) {
-		    script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
-		    Tcl_LogCommandInfo(interp, script, script, --numSrcBytes);
-		    iPtr->flags &= ~ERR_ALREADY_LOGGED;
-		}
+		script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
+		Tcl_LogCommandInfo(interp, script, script, numSrcBytes);
 	    }
 	}
 	iPtr->evalFlags = 0;
-	iPtr->varFramePtr = savedVarFramePtr; 
+	iPtr->varFramePtr = savedVarFramePtr;
     }
 
     TclDecrRefCount(objPtr);
@@ -5272,39 +5289,37 @@ TclEvalObjEx(interp, objPtr, flags, invoker, word)
  *
  * ProcessUnexpectedResult --
  *
- *	Procedure called by Tcl_EvalObj to set the interpreter's result
- *	value to an appropriate error message when the code it evaluates
- *	returns an unexpected result code (not TCL_OK and not TCL_ERROR) to
- *	the topmost evaluation level.
+ *	Function called by Tcl_EvalObj to set the interpreter's result value
+ *	to an appropriate error message when the code it evaluates returns an
+ *	unexpected result code (not TCL_OK and not TCL_ERROR) to the topmost
+ *	evaluation level.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The interpreter result is set to an error message appropriate to
- *	the result code.
+ *	The interpreter result is set to an error message appropriate to the
+ *	result code.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-ProcessUnexpectedResult(interp, returnCode)
-    Tcl_Interp *interp;		/* The interpreter in which the unexpected
+ProcessUnexpectedResult(
+    Tcl_Interp *interp,		/* The interpreter in which the unexpected
 				 * result code was returned. */
-    int returnCode;		/* The unexpected result code. */
+    int returnCode)		/* The unexpected result code. */
 {
     Tcl_ResetResult(interp);
     if (returnCode == TCL_BREAK) {
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "invoked \"break\" outside of a loop", -1);
+	Tcl_AppendResult(interp,
+		"invoked \"break\" outside of a loop", NULL);
     } else if (returnCode == TCL_CONTINUE) {
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		"invoked \"continue\" outside of a loop", -1);
+	Tcl_AppendResult(interp,
+		"invoked \"continue\" outside of a loop", NULL);
     } else {
-        char buf[30 + TCL_INTEGER_SPACE];
-
-	sprintf(buf, "command returned bad code: %d", returnCode);
-	Tcl_SetResult(interp, buf, TCL_VOLATILE);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"command returned bad code: %d", returnCode));
     }
 }
 
@@ -5313,15 +5328,15 @@ ProcessUnexpectedResult(interp, returnCode)
  *
  * Tcl_ExprLong, Tcl_ExprDouble, Tcl_ExprBoolean --
  *
- *	Procedures to evaluate an expression and return its value in a
+ *	Functions to evaluate an expression and return its value in a
  *	particular form.
  *
  * Results:
- *	Each of the procedures below returns a standard Tcl result. If an
- *	error occurs then an error message is left in the interp's result.
- *	Otherwise the value of the expression, in the appropriate form,
- *	is stored at *ptr. If the expression had a result that was
- *	incompatible with the desired form then an error is returned.
+ *	Each of the functions below returns a standard Tcl result. If an error
+ *	occurs then an error message is left in the interp's result. Otherwise
+ *	the value of the expression, in the appropriate form, is stored at
+ *	*ptr. If the expression had a result that was incompatible with the
+ *	desired form then an error is returned.
  *
  * Side effects:
  *	None.
@@ -5330,197 +5345,92 @@ ProcessUnexpectedResult(interp, returnCode)
  */
 
 int
-Tcl_ExprLong(interp, string, ptr)
-    Tcl_Interp *interp;		/* Context in which to evaluate the
+Tcl_ExprLong(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
 				 * expression. */
-    CONST char *string;		/* Expression to evaluate. */
-    long *ptr;			/* Where to store result. */
+    const char *exprstring,	/* Expression to evaluate. */
+    long *ptr)			/* Where to store result. */
 {
     register Tcl_Obj *exprPtr;
-    Tcl_Obj *resultPtr;
-    int length = strlen(string);
     int result = TCL_OK;
-
-    if (length > 0) {
-	exprPtr = Tcl_NewStringObj(string, length);
-	Tcl_IncrRefCount(exprPtr);
-	result = Tcl_ExprObj(interp, exprPtr, &resultPtr);
-	if (result == TCL_OK) {
-	    /*
-	     * Store an integer based on the expression result.
-	     */
-
-	    if (resultPtr->typePtr == &tclIntType) {
-		*ptr = resultPtr->internalRep.longValue;
-	    } else if (resultPtr->typePtr == &tclDoubleType) {
-		*ptr = (long) resultPtr->internalRep.doubleValue;
-	    } else if (resultPtr->typePtr == &tclWideIntType) {
-#ifndef TCL_WIDE_INT_IS_LONG
-		/*
-		 * See Tcl_GetIntFromObj for conversion comments.
-		 */
-		Tcl_WideInt w = resultPtr->internalRep.wideValue;
-		if ((w >= -(Tcl_WideInt)(ULONG_MAX))
-			&& (w <= (Tcl_WideInt)(ULONG_MAX))) {
-		    *ptr = Tcl_WideAsLong(w);
-		} else {
-		    Tcl_SetResult(interp,
-			    "integer value too large to represent as non-long integer",
-			    TCL_STATIC);
-		    result = TCL_ERROR;
-		}
-#else
-		*ptr = resultPtr->internalRep.longValue;
-#endif
-	    } else {
-		Tcl_SetResult(interp,
-		        "expression didn't have numeric value", TCL_STATIC);
-		result = TCL_ERROR;
-	    }
-	    Tcl_DecrRefCount(resultPtr);  /* discard the result object */
-	} else {
-	    /*
-	     * Move the interpreter's object result to the string result, 
-	     * then reset the object result.
-	     */
-
-	    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	            TCL_VOLATILE);
-	}
-	Tcl_DecrRefCount(exprPtr);  /* discard the expression object */	
-    } else {
+    if (*exprstring == '\0') {
 	/*
-	 * An empty string. Just set the result integer to 0.
+	 * Legacy compatibility - return 0 for the zero-length string.
 	 */
-	
+
 	*ptr = 0;
+    } else {
+	exprPtr = Tcl_NewStringObj(exprstring, -1);
+	Tcl_IncrRefCount(exprPtr);
+	result = Tcl_ExprLongObj(interp, exprPtr, ptr);
+	Tcl_DecrRefCount(exprPtr);
+	if (result != TCL_OK) {
+	    (void) Tcl_GetStringResult(interp);
+	}
     }
     return result;
 }
 
 int
-Tcl_ExprDouble(interp, string, ptr)
-    Tcl_Interp *interp;		/* Context in which to evaluate the
+Tcl_ExprDouble(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
 				 * expression. */
-    CONST char *string;		/* Expression to evaluate. */
-    double *ptr;		/* Where to store result. */
+    const char *exprstring,	/* Expression to evaluate. */
+    double *ptr)		/* Where to store result. */
 {
     register Tcl_Obj *exprPtr;
-    Tcl_Obj *resultPtr;
-    int length = strlen(string);
     int result = TCL_OK;
 
-    if (length > 0) {
-	exprPtr = Tcl_NewStringObj(string, length);
-	Tcl_IncrRefCount(exprPtr);
-	result = Tcl_ExprObj(interp, exprPtr, &resultPtr);
-	if (result == TCL_OK) {
-	    /*
-	     * Store a double  based on the expression result.
-	     */
-
-	    if (resultPtr->typePtr == &tclIntType) {
-		*ptr = (double) resultPtr->internalRep.longValue;
-	    } else if (resultPtr->typePtr == &tclDoubleType) {
-		*ptr = resultPtr->internalRep.doubleValue;
-	    } else if (resultPtr->typePtr == &tclWideIntType) {
-#ifndef TCL_WIDE_INT_IS_LONG
-		/*
-		 * See Tcl_GetIntFromObj for conversion comments.
-		 */
-		Tcl_WideInt w = resultPtr->internalRep.wideValue;
-		if ((w >= -(Tcl_WideInt)(ULONG_MAX))
-			&& (w <= (Tcl_WideInt)(ULONG_MAX))) {
-		    *ptr = (double) Tcl_WideAsLong(w);
-		} else {
-		    Tcl_SetResult(interp,
-			    "integer value too large to represent as non-long integer",
-			    TCL_STATIC);
-		    result = TCL_ERROR;
-		}
-#else
-		*ptr = (double) resultPtr->internalRep.longValue;
-#endif
-	    } else {
-		Tcl_SetResult(interp,
-		        "expression didn't have numeric value", TCL_STATIC);
-		result = TCL_ERROR;
-	    }
-	    Tcl_DecrRefCount(resultPtr);  /* discard the result object */
-	} else {
-	    /*
-	     * Move the interpreter's object result to the string result, 
-	     * then reset the object result.
-	     */
-
-	    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	            TCL_VOLATILE);
-	}
-	Tcl_DecrRefCount(exprPtr);  /* discard the expression object */
-    } else {
+    if (*exprstring == '\0') {
 	/*
-	 * An empty string. Just set the result double to 0.0.
+	 * Legacy compatibility - return 0 for the zero-length string.
 	 */
-	
+
 	*ptr = 0.0;
+    } else {
+	exprPtr = Tcl_NewStringObj(exprstring, -1);
+	Tcl_IncrRefCount(exprPtr);
+	result = Tcl_ExprDoubleObj(interp, exprPtr, ptr);
+	Tcl_DecrRefCount(exprPtr);
+				/* Discard the expression object. */
+	if (result != TCL_OK) {
+	    (void) Tcl_GetStringResult(interp);
+	}
     }
     return result;
 }
 
 int
-Tcl_ExprBoolean(interp, string, ptr)
-    Tcl_Interp *interp;		/* Context in which to evaluate the
-			         * expression. */
-    CONST char *string;		/* Expression to evaluate. */
-    int *ptr;			/* Where to store 0/1 result. */
+Tcl_ExprBoolean(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
+				 * expression. */
+    const char *exprstring,	/* Expression to evaluate. */
+    int *ptr)			/* Where to store 0/1 result. */
 {
-    register Tcl_Obj *exprPtr;
-    Tcl_Obj *resultPtr;
-    int length = strlen(string);
-    int result = TCL_OK;
+    if (*exprstring == '\0') {
+	/*
+	 * An empty string. Just set the result boolean to 0 (false).
+	 */
 
-    if (length > 0) {
-	exprPtr = Tcl_NewStringObj(string, length);
-	Tcl_IncrRefCount(exprPtr);
-	result = Tcl_ExprObj(interp, exprPtr, &resultPtr);
-	if (result == TCL_OK) {
-	    /*
-	     * Store a boolean based on the expression result.
-	     */
+	*ptr = 0;
+	return TCL_OK;
+    } else {
+	int result;
+	Tcl_Obj *exprPtr = Tcl_NewStringObj(exprstring, -1);
 
-	    if (resultPtr->typePtr == &tclIntType) {
-		*ptr = (resultPtr->internalRep.longValue != 0);
-	    } else if (resultPtr->typePtr == &tclDoubleType) {
-		*ptr = (resultPtr->internalRep.doubleValue != 0.0);
-	    } else if (resultPtr->typePtr == &tclWideIntType) {
-#ifndef TCL_WIDE_INT_IS_LONG
-		*ptr = (resultPtr->internalRep.wideValue != 0);
-#else
-		*ptr = (resultPtr->internalRep.longValue != 0);
-#endif
-	    } else {
-		result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr);
-	    }
-	    Tcl_DecrRefCount(resultPtr);  /* discard the result object */
-	}
+	Tcl_IncrRefCount(exprPtr);
+	result = Tcl_ExprBooleanObj(interp, exprPtr, ptr);
+	Tcl_DecrRefCount(exprPtr);
 	if (result != TCL_OK) {
 	    /*
-	     * Move the interpreter's object result to the string result, 
-	     * then reset the object result.
+	     * Move the interpreter's object result to the string result, then
+	     * reset the object result.
 	     */
 
-	    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	            TCL_VOLATILE);
+	    (void) Tcl_GetStringResult(interp);
 	}
-	Tcl_DecrRefCount(exprPtr); /* discard the expression object */
-    } else {
-	/*
-	 * An empty string. Just set the result boolean to 0 (false).
-	 */
-	
-	*ptr = 0;
+	return result;
     }
-    return result;
 }
 
 /*
@@ -5528,16 +5438,15 @@ Tcl_ExprBoolean(interp, string, ptr)
  *
  * Tcl_ExprLongObj, Tcl_ExprDoubleObj, Tcl_ExprBooleanObj --
  *
- *	Procedures to evaluate an expression in an object and return its
- *	value in a particular form.
+ *	Functions to evaluate an expression in an object and return its value
+ *	in a particular form.
  *
  * Results:
- *	Each of the procedures below returns a standard Tcl result
- *	object. If an error occurs then an error message is left in the
- *	interpreter's result. Otherwise the value of the expression, in the
- *	appropriate form, is stored at *ptr. If the expression had a result
- *	that was incompatible with the desired form then an error is
- *	returned.
+ *	Each of the functions below returns a standard Tcl result object. If
+ *	an error occurs then an error message is left in the interpreter's
+ *	result. Otherwise the value of the expression, in the appropriate
+ *	form, is stored at *ptr. If the expression had a result that was
+ *	incompatible with the desired form then an error is returned.
  *
  * Side effects:
  *	None.
@@ -5546,230 +5455,117 @@ Tcl_ExprBoolean(interp, string, ptr)
  */
 
 int
-Tcl_ExprLongObj(interp, objPtr, ptr)
-    Tcl_Interp *interp;			/* Context in which to evaluate the
-					 * expression. */
-    register Tcl_Obj *objPtr;		/* Expression to evaluate. */
-    long *ptr;				/* Where to store long result. */
+Tcl_ExprLongObj(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
+				 * expression. */
+    register Tcl_Obj *objPtr,	/* Expression to evaluate. */
+    long *ptr)			/* Where to store long result. */
 {
     Tcl_Obj *resultPtr;
-    int result;
+    int result, type;
+    double d;
+    ClientData internalPtr;
 
     result = Tcl_ExprObj(interp, objPtr, &resultPtr);
-    if (result == TCL_OK) {
-	if (resultPtr->typePtr == &tclIntType) {
-	    *ptr = resultPtr->internalRep.longValue;
-	} else if (resultPtr->typePtr == &tclDoubleType) {
-	    *ptr = (long) resultPtr->internalRep.doubleValue;
-	} else {
-	    result = Tcl_GetLongFromObj(interp, resultPtr, ptr);
-	    if (result != TCL_OK) {
-		return result;
-	    }
+    if (result != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (TclGetNumberFromObj(interp, resultPtr, &internalPtr, &type) != TCL_OK){
+	return TCL_ERROR;
+    }
+
+    switch (type) {
+    case TCL_NUMBER_DOUBLE: {
+	mp_int big;
+
+	d = *((const double *) internalPtr);
+	Tcl_DecrRefCount(resultPtr);
+	if (Tcl_InitBignumFromDouble(interp, d, &big) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	Tcl_DecrRefCount(resultPtr);  /* discard the result object */
+	resultPtr = Tcl_NewBignumObj(&big);
+	/* FALLTHROUGH */
     }
+    case TCL_NUMBER_LONG:
+    case TCL_NUMBER_WIDE:
+    case TCL_NUMBER_BIG:
+	result = TclGetLongFromObj(interp, resultPtr, ptr);
+	break;
+
+    case TCL_NUMBER_NAN:
+	Tcl_GetDoubleFromObj(interp, resultPtr, &d);
+	result = TCL_ERROR;
+    }
+
+    Tcl_DecrRefCount(resultPtr);/* Discard the result object. */
     return result;
 }
 
 int
-Tcl_ExprDoubleObj(interp, objPtr, ptr)
-    Tcl_Interp *interp;			/* Context in which to evaluate the
-					 * expression. */
-    register Tcl_Obj *objPtr;		/* Expression to evaluate. */
-    double *ptr;			/* Where to store double result. */
+Tcl_ExprDoubleObj(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
+				 * expression. */
+    register Tcl_Obj *objPtr,	/* Expression to evaluate. */
+    double *ptr)		/* Where to store double result. */
 {
     Tcl_Obj *resultPtr;
-    int result;
+    int result, type;
+    ClientData internalPtr;
 
     result = Tcl_ExprObj(interp, objPtr, &resultPtr);
+    if (result != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    result = TclGetNumberFromObj(interp, resultPtr, &internalPtr, &type);
     if (result == TCL_OK) {
-	if (resultPtr->typePtr == &tclIntType) {
-	    *ptr = (double) resultPtr->internalRep.longValue;
-	} else if (resultPtr->typePtr == &tclDoubleType) {
-	    *ptr = resultPtr->internalRep.doubleValue;
-	} else {
+	switch (type) {
+	case TCL_NUMBER_NAN:
+#ifndef ACCEPT_NAN
+	    result = Tcl_GetDoubleFromObj(interp, resultPtr, ptr);
+	    break;
+#endif
+	case TCL_NUMBER_DOUBLE:
+	    *ptr = *((const double *) internalPtr);
+	    result = TCL_OK;
+	    break;
+	default:
 	    result = Tcl_GetDoubleFromObj(interp, resultPtr, ptr);
-	    if (result != TCL_OK) {
-		return result;
-	    }
 	}
-	Tcl_DecrRefCount(resultPtr);  /* discard the result object */
     }
+    Tcl_DecrRefCount(resultPtr);/* Discard the result object. */
     return result;
 }
 
 int
-Tcl_ExprBooleanObj(interp, objPtr, ptr)
-    Tcl_Interp *interp;			/* Context in which to evaluate the
-					 * expression. */
-    register Tcl_Obj *objPtr;		/* Expression to evaluate. */
-    int *ptr;				/* Where to store 0/1 result. */
+Tcl_ExprBooleanObj(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
+				 * expression. */
+    register Tcl_Obj *objPtr,	/* Expression to evaluate. */
+    int *ptr)			/* Where to store 0/1 result. */
 {
     Tcl_Obj *resultPtr;
     int result;
 
     result = Tcl_ExprObj(interp, objPtr, &resultPtr);
     if (result == TCL_OK) {
-	if (resultPtr->typePtr == &tclIntType) {
-	    *ptr = (resultPtr->internalRep.longValue != 0);
-	} else if (resultPtr->typePtr == &tclDoubleType) {
-	    *ptr = (resultPtr->internalRep.doubleValue != 0.0);
-	} else {
-	    result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr);
-	}
-	Tcl_DecrRefCount(resultPtr);  /* discard the result object */
-    }
-    return result;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclInvoke --
- *
- *	Invokes a Tcl command, given an argv/argc, from either the
- *	exposed or the hidden sets of commands in the given interpreter.
- *	NOTE: The command is invoked in the current stack frame of
- *	the interpreter, thus it can modify local variables.
- *
- * Results:
- *	A standard Tcl result.
- *
- * Side effects:
- *	Whatever the command does.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclInvoke(interp, argc, argv, flags)
-    Tcl_Interp *interp;		/* Where to invoke the command. */
-    int argc;			/* Count of args. */
-    register CONST char **argv;	/* The arg strings; argv[0] is the name of
-                                 * the command to invoke. */
-    int flags;			/* Combination of flags controlling the
-				 * call: TCL_INVOKE_HIDDEN and
-				 * TCL_INVOKE_NO_UNKNOWN. */
-{
-    register Tcl_Obj *objPtr;
-    register int i;
-    int length, result;
-
-    /*
-     * This procedure generates an objv array for object arguments that hold
-     * the argv strings. It starts out with stack-allocated space but uses
-     * dynamically-allocated storage if needed.
-     */
-
-#define NUM_ARGS 20
-    Tcl_Obj *(objStorage[NUM_ARGS]);
-    register Tcl_Obj **objv = objStorage;
-
-    /*
-     * Create the object argument array "objv". Make sure objv is large
-     * enough to hold the objc arguments plus 1 extra for the zero
-     * end-of-objv word.
-     */
-
-    if ((argc + 1) > NUM_ARGS) {
-	objv = (Tcl_Obj **)
-	    ckalloc((unsigned)(argc + 1) * sizeof(Tcl_Obj *));
-    }
-
-    for (i = 0;  i < argc;  i++) {
-	length = strlen(argv[i]);
-	objv[i] = Tcl_NewStringObj(argv[i], length);
-	Tcl_IncrRefCount(objv[i]);
-    }
-    objv[argc] = 0;
-
-    /*
-     * Use TclObjInterpProc to actually invoke the command.
-     */
-
-    result = TclObjInvoke(interp, argc, objv, flags);
-
-    /*
-     * Move the interpreter's object result to the string result, 
-     * then reset the object result.
-     */
-    
-    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	    TCL_VOLATILE);
-
-    /*
-     * Decrement the ref counts on the objv elements since we are done
-     * with them.
-     */
-
-    for (i = 0;  i < argc;  i++) {
-	objPtr = objv[i];
-	Tcl_DecrRefCount(objPtr);
-    }
-    
-    /*
-     * Free the objv array if malloc'ed storage was used.
-     */
-
-    if (objv != objStorage) {
-	ckfree((char *) objv);
+	result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr);
+	Tcl_DecrRefCount(resultPtr);
+				/* Discard the result object. */
     }
     return result;
-#undef NUM_ARGS
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclGlobalInvoke --
- *
- *	Invokes a Tcl command, given an argv/argc, from either the
- *	exposed or hidden sets of commands in the given interpreter.
- *	NOTE: The command is invoked in the global stack frame of
- *	the interpreter, thus it cannot see any current state on
- *	the stack for that interpreter.
- *
- * Results:
- *	A standard Tcl result.
- *
- * Side effects:
- *	Whatever the command does.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclGlobalInvoke(interp, argc, argv, flags)
-    Tcl_Interp *interp;		/* Where to invoke the command. */
-    int argc;			/* Count of args. */
-    register CONST char **argv;	/* The arg strings; argv[0] is the name of
-                                 * the command to invoke. */
-    int flags;			/* Combination of flags controlling the
-				 * call: TCL_INVOKE_HIDDEN and
-				 * TCL_INVOKE_NO_UNKNOWN. */
-{
-    register Interp *iPtr = (Interp *) interp;
-    int result;
-    CallFrame *savedVarFramePtr;
-
-    savedVarFramePtr = iPtr->varFramePtr;
-    iPtr->varFramePtr = NULL;
-    result = TclInvoke(interp, argc, argv, flags);
-    iPtr->varFramePtr = savedVarFramePtr;
-    return result;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclObjInvokeGlobal --
+ * TclObjInvokeNamespace --
  *
- *	Object version: Invokes a Tcl command, given an objv/objc, from
- *	either the exposed or hidden set of commands in the given
- *	interpreter.
+ *	Object version: Invokes a Tcl command, given an objv/objc, from either
+ *	the exposed or hidden set of commands in the given interpreter.
  *	NOTE: The command is invoked in the global stack frame of the
- *	interpreter, thus it cannot see any current state on the
+ *	interpreter or namespace, thus it cannot see any current state on the
  *	stack of that interpreter.
  *
  * Results:
@@ -5782,25 +5578,33 @@ TclGlobalInvoke(interp, argc, argv, flags)
  */
 
 int
-TclObjInvokeGlobal(interp, objc, objv, flags)
-    Tcl_Interp *interp;		/* Interpreter in which command is to be
+TclObjInvokeNamespace(
+    Tcl_Interp *interp,		/* Interpreter in which command is to be
 				 * invoked. */
-    int objc;			/* Count of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects; objv[0] points to the
+    int objc,			/* Count of arguments. */
+    Tcl_Obj *const objv[],	/* Argument objects; objv[0] points to the
 				 * name of the command to invoke. */
-    int flags;			/* Combination of flags controlling the
-				 * call: TCL_INVOKE_HIDDEN,
-				 * TCL_INVOKE_NO_UNKNOWN, or
-				 * TCL_INVOKE_NO_TRACEBACK. */
+    Tcl_Namespace *nsPtr,	/* The namespace to use. */
+    int flags)			/* Combination of flags controlling the call:
+				 * TCL_INVOKE_HIDDEN, TCL_INVOKE_NO_UNKNOWN,
+				 * or TCL_INVOKE_NO_TRACEBACK. */
 {
-    register Interp *iPtr = (Interp *) interp;
     int result;
-    CallFrame *savedVarFramePtr;
+    Tcl_CallFrame *framePtr;
+
+    /*
+     * Make the specified namespace the current namespace and invoke the
+     * command.
+     */
+
+    result = TclPushStackFrame(interp, &framePtr, nsPtr, /*isProcFrame*/0);
+    if (result != TCL_OK) {
+	return TCL_ERROR;
+    }
 
-    savedVarFramePtr = iPtr->varFramePtr;
-    iPtr->varFramePtr = NULL;
     result = TclObjInvoke(interp, objc, objv, flags);
-    iPtr->varFramePtr = savedVarFramePtr;
+
+    TclPopStackFrame(interp);
     return result;
 }
 
@@ -5809,8 +5613,8 @@ TclObjInvokeGlobal(interp, objc, objv, flags)
  *
  * TclObjInvoke --
  *
- *	Invokes a Tcl command, given an objv/objc, from either the
- *	exposed or the hidden sets of commands in the given interpreter.
+ *	Invokes a Tcl command, given an objv/objc, from either the exposed or
+ *	the hidden sets of commands in the given interpreter.
  *
  * Results:
  *	A standard Tcl object result.
@@ -5822,165 +5626,77 @@ TclObjInvokeGlobal(interp, objc, objv, flags)
  */
 
 int
-TclObjInvoke(interp, objc, objv, flags)
-    Tcl_Interp *interp;		/* Interpreter in which command is to be
+TclObjInvoke(
+    Tcl_Interp *interp,		/* Interpreter in which command is to be
 				 * invoked. */
-    int objc;			/* Count of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects; objv[0] points to the
+    int objc,			/* Count of arguments. */
+    Tcl_Obj *const objv[],	/* Argument objects; objv[0] points to the
 				 * name of the command to invoke. */
-    int flags;			/* Combination of flags controlling the
-				 * call: TCL_INVOKE_HIDDEN,
-				 * TCL_INVOKE_NO_UNKNOWN, or
-				 * TCL_INVOKE_NO_TRACEBACK. */
+    int flags)			/* Combination of flags controlling the call:
+				 * TCL_INVOKE_HIDDEN, TCL_INVOKE_NO_UNKNOWN,
+				 * or TCL_INVOKE_NO_TRACEBACK. */
 {
     register Interp *iPtr = (Interp *) interp;
     Tcl_HashTable *hTblPtr;	/* Table of hidden commands. */
     char *cmdName;		/* Name of the command from objv[0]. */
-    register Tcl_HashEntry *hPtr;
-    Tcl_Command cmd;
+    Tcl_HashEntry *hPtr = NULL;
     Command *cmdPtr;
-    int localObjc;		/* Used to invoke "unknown" if the */
-    Tcl_Obj **localObjv = NULL;	/* command is not found. */
-    register int i;
     int result;
 
-    if (interp == (Tcl_Interp *) NULL) {
-        return TCL_ERROR;
+    if (interp == NULL) {
+	return TCL_ERROR;
+    }
+
+    if ((objc < 1) || (objv == NULL)) {
+	Tcl_AppendResult(interp, "illegal argument vector", NULL);
+	return TCL_ERROR;
     }
 
-    if ((objc < 1) || (objv == (Tcl_Obj **) NULL)) {
-        Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "illegal argument vector", -1);
-        return TCL_ERROR;
+    if ((flags & TCL_INVOKE_HIDDEN) == 0) {
+	Tcl_Panic("TclObjInvoke: called without TCL_INVOKE_HIDDEN");
     }
 
-    cmdName = Tcl_GetString(objv[0]);
-    if (flags & TCL_INVOKE_HIDDEN) {
-        /*
-         * We never invoke "unknown" for hidden commands.
-         */
-        
-	hPtr = NULL;
-        hTblPtr = ((Interp *) interp)->hiddenCmdTablePtr;
-        if (hTblPtr != NULL) {
-	    hPtr = Tcl_FindHashEntry(hTblPtr, cmdName);
-	}
-	if (hPtr == NULL) {
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		     "invalid hidden command name \"", cmdName, "\"",
-		     (char *) NULL);
-            return TCL_ERROR;
-        }
-	cmdPtr = (Command *) Tcl_GetHashValue(hPtr);
-    } else {
-	cmdPtr = NULL;
-	cmd = Tcl_FindCommand(interp, cmdName,
-	        (Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY);
-        if (cmd != (Tcl_Command) NULL) {
-	    cmdPtr = (Command *) cmd;
-        }
-	if (cmdPtr == NULL) {
-            if (!(flags & TCL_INVOKE_NO_UNKNOWN)) {
-		cmd = Tcl_FindCommand(interp, "unknown",
-                        (Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY);
-		if (cmd != (Tcl_Command) NULL) {
-	            cmdPtr = (Command *) cmd;
-                }
-                if (cmdPtr != NULL) {
-                    localObjc = (objc + 1);
-                    localObjv = (Tcl_Obj **)
-			ckalloc((unsigned) (sizeof(Tcl_Obj *) * localObjc));
-		    localObjv[0] = Tcl_NewStringObj("unknown", -1);
-		    Tcl_IncrRefCount(localObjv[0]);
-                    for (i = 0;  i < objc;  i++) {
-                        localObjv[i+1] = objv[i];
-                    }
-                    objc = localObjc;
-                    objv = localObjv;
-                }
-            }
-
-            /*
-             * Check again if we found the command. If not, "unknown" is
-             * not present and we cannot help, or the caller said not to
-             * call "unknown" (they specified TCL_INVOKE_NO_UNKNOWN).
-             */
-
-            if (cmdPtr == NULL) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"invalid command name \"",  cmdName, "\"", 
-			 (char *) NULL);
-                return TCL_ERROR;
-            }
-        }
-    }
-
-    /*
-     * Invoke the command procedure. First reset the interpreter's string
-     * and object results to their default empty values since they could
-     * have gotten changed by earlier invocations.
+    if (TclInterpReady(interp) == TCL_ERROR) {
+	return TCL_ERROR;
+    }
+
+    cmdName = TclGetString(objv[0]);
+    hTblPtr = iPtr->hiddenCmdTablePtr;
+    if (hTblPtr != NULL) {
+	hPtr = Tcl_FindHashEntry(hTblPtr, cmdName);
+    }
+    if (hPtr == NULL) {
+	Tcl_AppendResult(interp, "invalid hidden command name \"",
+		cmdName, "\"", NULL);
+	return TCL_ERROR;
+    }
+    cmdPtr = Tcl_GetHashValue(hPtr);
+
+    /*
+     * Invoke the command function.
      */
 
-    Tcl_ResetResult(interp);
     iPtr->cmdCount++;
-    result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp, objc, objv);
+    result = cmdPtr->objProc(cmdPtr->objClientData, interp, objc, objv);
 
     /*
-     * If an error occurred, record information about what was being
-     * executed when the error occurred.
+     * If an error occurred, record information about what was being executed
+     * when the error occurred.
      */
 
     if ((result == TCL_ERROR)
 	    && ((flags & TCL_INVOKE_NO_TRACEBACK) == 0)
 	    && ((iPtr->flags & ERR_ALREADY_LOGGED) == 0)) {
-	Tcl_Obj *msg;
-        
-        if (!(iPtr->flags & ERR_IN_PROGRESS)) {
-            msg = Tcl_NewStringObj("\n    while invoking\n\"", -1);
-        } else {
-            msg = Tcl_NewStringObj("\n    invoked from within\n\"", -1);
-        }
-	Tcl_IncrRefCount(msg);
-        for (i = 0;  i < objc;  i++) {
-	    CONST char *bytes;
-	    int length;
-
-	    Tcl_AppendObjToObj(msg, objv[i]);
-	    bytes = Tcl_GetStringFromObj(msg, &length);
-	    if (length > 100) {
-		/*
-		 * Back up truncation point so that we don't truncate
-		 * in the middle of a multi-byte character.
-		 */
-		length = 100;
-		while ( (bytes[length] & 0xC0) == 0x80 ) {
-		    length--;
-		}
-		Tcl_SetObjLength(msg, length);
-		Tcl_AppendToObj(msg, "...", -1);
-		break;
-	    }
-	    if (i != (objc - 1)) {
-		Tcl_AppendToObj(msg, " ", -1);
-	    }
-        }
-
-	Tcl_AppendToObj(msg, "\"", -1);
-        Tcl_AddObjErrorInfo(interp, Tcl_GetString(msg), -1);
-	Tcl_DecrRefCount(msg);
+	int length;
+	Tcl_Obj *command = Tcl_NewListObj(objc, objv);
+	const char *cmdString;
+
+	Tcl_IncrRefCount(command);
+	cmdString = Tcl_GetStringFromObj(command, &length);
+	Tcl_LogCommandInfo(interp, cmdString, cmdString, length);
+	Tcl_DecrRefCount(command);
 	iPtr->flags &= ~ERR_ALREADY_LOGGED;
     }
-
-    /*
-     * Free any locally allocated storage used to call "unknown".
-     */
-
-    if (localObjv != (Tcl_Obj **) NULL) {
-	Tcl_DecrRefCount(localObjv[0]);
-        ckfree((char *) localObjv);
-    }
     return result;
 }
 
@@ -5994,413 +5710,81 @@ TclObjInvoke(interp, objc, objv, flags)
  *
  * Results:
  *	A standard Tcl result. If the result is TCL_OK, then the interp's
- *	result is set to the string value of the expression. If the result
- *	is TCL_ERROR, then the interp's result contains an error message.
+ *	result is set to the string value of the expression. If the result is
+ *	TCL_ERROR, then the interp's result contains an error message.
  *
  * Side effects:
  *	A Tcl object is allocated to hold a copy of the expression string.
- *	This expression object is passed to Tcl_ExprObj and then
- *	deallocated.
+ *	This expression object is passed to Tcl_ExprObj and then deallocated.
  *
  *---------------------------------------------------------------------------
  */
 
 int
-Tcl_ExprString(interp, string)
-    Tcl_Interp *interp;		/* Context in which to evaluate the
+Tcl_ExprString(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
 				 * expression. */
-    CONST char *string;		/* Expression to evaluate. */
+    const char *expr)		/* Expression to evaluate. */
 {
-    register Tcl_Obj *exprPtr;
-    Tcl_Obj *resultPtr;
-    int length = strlen(string);
-    char buf[TCL_DOUBLE_SPACE];
-    int result = TCL_OK;
-
-    if (length > 0) {
-	TclNewObj(exprPtr);
-	TclInitStringRep(exprPtr, string, length);
-	Tcl_IncrRefCount(exprPtr);
+    int code = TCL_OK;
 
-	result = Tcl_ExprObj(interp, exprPtr, &resultPtr);
-	if (result == TCL_OK) {
-	    /*
-	     * Set the interpreter's string result from the result object.
-	     */
-	    
-	    if (resultPtr->typePtr == &tclIntType) {
-		sprintf(buf, "%ld", resultPtr->internalRep.longValue);
-		Tcl_SetResult(interp, buf, TCL_VOLATILE);
-	    } else if (resultPtr->typePtr == &tclDoubleType) {
-		Tcl_PrintDouble((Tcl_Interp *) NULL,
-		        resultPtr->internalRep.doubleValue, buf);
-		Tcl_SetResult(interp, buf, TCL_VOLATILE);
-	    } else {
-		/*
-		 * Set interpreter's string result from the result object.
-		 */
-	    
-		Tcl_SetResult(interp, TclGetString(resultPtr),
-		        TCL_VOLATILE);
-	    }
-	    Tcl_DecrRefCount(resultPtr);  /* discard the result object */
-	} else {
-	    /*
-	     * Move the interpreter's object result to the string result, 
-	     * then reset the object result.
-	     */
-	    
-	    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	            TCL_VOLATILE);
-	}
-	Tcl_DecrRefCount(exprPtr); /* discard the expression object */
-    } else {
+    if (expr[0] == '\0') {
 	/*
 	 * An empty string. Just set the interpreter's result to 0.
 	 */
-	
-	Tcl_SetResult(interp, "0", TCL_VOLATILE);
-    }
-    return result;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_CreateObjTrace --
- *
- *	Arrange for a procedure to be called to trace command execution.
- *
- * Results:
- *	The return value is a token for the trace, which may be passed
- *	to Tcl_DeleteTrace to eliminate the trace.
- *
- * Side effects:
- *	From now on, proc will be called just before a command procedure
- *	is called to execute a Tcl command.  Calls to proc will have the
- *	following form:
- *
- *      void proc( ClientData     clientData,
- *                 Tcl_Interp*    interp,
- *                 int            level,
- *                 CONST char*    command,
- *                 Tcl_Command    commandInfo,
- *                 int            objc,
- *                 Tcl_Obj *CONST objv[] );
- *
- *      The 'clientData' and 'interp' arguments to 'proc' will be the
- *      same as the arguments to Tcl_CreateObjTrace.  The 'level'
- *	argument gives the nesting depth of command interpretation within
- *	the interpreter.  The 'command' argument is the ASCII text of
- *	the command being evaluated -- before any substitutions are
- *	performed.  The 'commandInfo' argument gives a handle to the
- *	command procedure that will be evaluated.  The 'objc' and 'objv'
- *	parameters give the parameter vector that will be passed to the
- *	command procedure.  proc does not return a value.
- *
- *      It is permissible for 'proc' to call Tcl_SetCommandTokenInfo
- *      to change the command procedure or client data for the command
- *      being evaluated, and these changes will take effect with the
- *      current evaluation.
- *
- * The 'level' argument specifies the maximum nesting level of calls
- * to be traced.  If the execution depth of the interpreter exceeds
- * 'level', the trace callback is not executed.
- *
- * The 'flags' argument is either zero or the value,
- * TCL_ALLOW_INLINE_COMPILATION.  If the TCL_ALLOW_INLINE_COMPILATION
- * flag is not present, the bytecode compiler will not generate inline
- * code for Tcl's built-in commands.  This behavior will have a significant
- * impact on performance, but will ensure that all command evaluations are
- * traced.  If the TCL_ALLOW_INLINE_COMPILATION flag is present, the
- * bytecode compiler will have its normal behavior of compiling in-line
- * code for some of Tcl's built-in commands.  In this case, the tracing
- * will be imprecise -- in-line code will not be traced -- but run-time
- * performance will be improved.  The latter behavior is desired for
- * many applications such as profiling of run time.
- *
- * When the trace is deleted, the 'delProc' procedure will be invoked,
- * passing it the original client data.  
- *
- *----------------------------------------------------------------------
- */
 
-Tcl_Trace
-Tcl_CreateObjTrace( interp, level, flags, proc, clientData, delProc )
-    Tcl_Interp* interp;		/* Tcl interpreter */
-    int level;			/* Maximum nesting level */
-    int flags;			/* Flags, see above */
-    Tcl_CmdObjTraceProc* proc;	/* Trace callback */
-    ClientData clientData;	/* Client data for the callback */
-    Tcl_CmdObjTraceDeleteProc* delProc;
-				/* Procedure to call when trace is deleted */
-{
-    register Trace *tracePtr;
-    register Interp *iPtr = (Interp *) interp;
-
-    /* Test if this trace allows inline compilation of commands */
-
-    if (!(flags & TCL_ALLOW_INLINE_COMPILATION)) {
-	if (iPtr->tracesForbiddingInline == 0) {
-
-	    /*
-	     * When the first trace forbidding inline compilation is
-	     * created, invalidate existing compiled code for this
-	     * interpreter and arrange (by setting the
-	     * DONT_COMPILE_CMDS_INLINE flag) that when compiling new
-	     * code, no commands will be compiled inline (i.e., into
-	     * an inline sequence of instructions). We do this because
-	     * commands that were compiled inline will never result in
-	     * a command trace being called.
-	     */
-
-	    iPtr->compileEpoch++;
-	    iPtr->flags |= DONT_COMPILE_CMDS_INLINE;
+	Tcl_SetResult(interp, "0", TCL_VOLATILE);
+    } else {
+	Tcl_Obj *resultPtr, *exprObj = Tcl_NewStringObj(expr, -1);
+
+	Tcl_IncrRefCount(exprObj);
+	code = Tcl_ExprObj(interp, exprObj, &resultPtr);
+	Tcl_DecrRefCount(exprObj);
+	if (code == TCL_OK) {
+	    Tcl_SetObjResult(interp, resultPtr);
+	    Tcl_DecrRefCount(resultPtr);
 	}
-	iPtr->tracesForbiddingInline++;
-    }
-    
-    tracePtr = (Trace *) ckalloc(sizeof(Trace));
-    tracePtr->level		= level;
-    tracePtr->proc		= proc;
-    tracePtr->clientData	= clientData;
-    tracePtr->delProc           = delProc;
-    tracePtr->nextPtr		= iPtr->tracePtr;
-    tracePtr->flags		= flags;
-    iPtr->tracePtr		= tracePtr;
-
-    return (Tcl_Trace) tracePtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_CreateTrace --
- *
- *	Arrange for a procedure to be called to trace command execution.
- *
- * Results:
- *	The return value is a token for the trace, which may be passed
- *	to Tcl_DeleteTrace to eliminate the trace.
- *
- * Side effects:
- *	From now on, proc will be called just before a command procedure
- *	is called to execute a Tcl command.  Calls to proc will have the
- *	following form:
- *
- *	void
- *	proc(clientData, interp, level, command, cmdProc, cmdClientData,
- *		argc, argv)
- *	    ClientData clientData;
- *	    Tcl_Interp *interp;
- *	    int level;
- *	    char *command;
- *	    int (*cmdProc)();
- *	    ClientData cmdClientData;
- *	    int argc;
- *	    char **argv;
- *	{
- *	}
- *
- *	The clientData and interp arguments to proc will be the same
- *	as the corresponding arguments to this procedure.  Level gives
- *	the nesting level of command interpretation for this interpreter
- *	(0 corresponds to top level).  Command gives the ASCII text of
- *	the raw command, cmdProc and cmdClientData give the procedure that
- *	will be called to process the command and the ClientData value it
- *	will receive, and argc and argv give the arguments to the
- *	command, after any argument parsing and substitution.  Proc
- *	does not return a value.
- *
- *----------------------------------------------------------------------
- */
 
-Tcl_Trace
-Tcl_CreateTrace(interp, level, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter in which to create trace. */
-    int level;			/* Only call proc for commands at nesting
-				 * level<=argument level (1=>top level). */
-    Tcl_CmdTraceProc *proc;	/* Procedure to call before executing each
-				 * command. */
-    ClientData clientData;	/* Arbitrary value word to pass to proc. */
-{
-    StringTraceData* data;
-    data = (StringTraceData*) ckalloc( sizeof( *data ));
-    data->clientData = clientData;
-    data->proc = proc;
-    return Tcl_CreateObjTrace( interp, level, 0, StringTraceProc,
-			       (ClientData) data, StringTraceDeleteProc );
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * StringTraceProc --
- *
- *	Invoke a string-based trace procedure from an object-based
- *	callback.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Whatever the string-based trace procedure does.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-StringTraceProc( clientData, interp, level, command, commandInfo, objc, objv )
-    ClientData clientData;
-    Tcl_Interp* interp;
-    int level;
-    CONST char* command;
-    Tcl_Command commandInfo;
-    int objc;
-    Tcl_Obj *CONST *objv;
-{
-    StringTraceData* data = (StringTraceData*) clientData;
-    Command* cmdPtr = (Command*) commandInfo;
-
-    CONST char** argv;		/* Args to pass to string trace proc */
-
-    int i;
+	/*
+	 * Force the string rep of the interp result.
+	 */
 
-    /*
-     * This is a bit messy because we have to emulate the old trace
-     * interface, which uses strings for everything.
-     */
-	    
-    argv = (CONST char **) ckalloc((unsigned) ( (objc + 1)
-						* sizeof(CONST char *) ));
-    for (i = 0; i < objc; i++) {
-	argv[i] = Tcl_GetString(objv[i]);
+	(void) Tcl_GetStringResult(interp);
     }
-    argv[objc] = 0;
-
-    /*
-     * Invoke the command procedure.  Note that we cast away const-ness
-     * on two parameters for compatibility with legacy code; the code
-     * MUST NOT modify either command or argv.
-     */
-          
-    ( data->proc )( data->clientData, interp, level,
-		    (char*) command, cmdPtr->proc, cmdPtr->clientData,
-		    objc, argv );
-    ckfree( (char*) argv );
-
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * StringTraceDeleteProc --
- *
- *	Clean up memory when a string-based trace is deleted.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Allocated memory is returned to the system.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-StringTraceDeleteProc( clientData )
-    ClientData clientData;
-{
-    ckfree( (char*) clientData );
+    return code;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_DeleteTrace --
+ * Tcl_AppendObjToErrorInfo --
  *
- *	Remove a trace.
+ *	Add a Tcl_Obj value to the errorInfo field that describes the current
+ *	error.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	From now on there will be no more calls to the procedure given
- *	in trace.
+ *	The value of the Tcl_obj is appended to the errorInfo field. If we are
+ *	just starting to log an error, errorInfo is initialized from the error
+ *	message in the interpreter's result.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteTrace(interp, trace)
-    Tcl_Interp *interp;		/* Interpreter that contains trace. */
-    Tcl_Trace trace;		/* Token for trace (returned previously by
-				 * Tcl_CreateTrace). */
+Tcl_AppendObjToErrorInfo(
+    Tcl_Interp *interp,		/* Interpreter to which error information
+				 * pertains. */
+    Tcl_Obj *objPtr)		/* Message to record. */
 {
-    Interp *iPtr = (Interp *) interp;
-    Trace *prevPtr, *tracePtr = (Trace *) trace;
-    register Trace **tracePtr2 = &(iPtr->tracePtr);
-    ActiveInterpTrace *activePtr;
-
-    /*
-     * Locate the trace entry in the interpreter's trace list,
-     * and remove it from the list.
-     */
-
-    prevPtr = NULL;
-    while ((*tracePtr2) != NULL && (*tracePtr2) != tracePtr) {
-	prevPtr = *tracePtr2;
-	tracePtr2 = &((*tracePtr2)->nextPtr);
-    }
-    if (*tracePtr2 == NULL) {
-	return;
-    }
-    (*tracePtr2) = (*tracePtr2)->nextPtr;
+    int length;
+    const char *message = TclGetStringFromObj(objPtr, &length);
 
-    /*
-     * The code below makes it possible to delete traces while traces
-     * are active: it makes sure that the deleted trace won't be
-     * processed by TclCheckInterpTraces.
-     */
-
-    for (activePtr = iPtr->activeInterpTracePtr;  activePtr != NULL;
-	    activePtr = activePtr->nextPtr) {
-	if (activePtr->nextTracePtr == tracePtr) {
-	    if (activePtr->reverseScan) {
-		activePtr->nextTracePtr = prevPtr;
-	    } else {
-		activePtr->nextTracePtr = tracePtr->nextPtr;
-	    }
-	}
-    }
-
-    /*
-     * If the trace forbids bytecode compilation, change the interpreter's
-     * state.  If bytecode compilation is now permitted, flag the fact and
-     * advance the compilation epoch so that procs will be recompiled to
-     * take advantage of it.
-     */
-
-    if (!(tracePtr->flags & TCL_ALLOW_INLINE_COMPILATION)) {
-	iPtr->tracesForbiddingInline--;
-	if (iPtr->tracesForbiddingInline == 0) {
-	    iPtr->flags &= ~DONT_COMPILE_CMDS_INLINE;
-	    iPtr->compileEpoch++;
-	}
-    }
-
-    /*
-     * Execute any delete callback.
-     */
-
-    if (tracePtr->delProc != NULL) {
-	(tracePtr->delProc)(tracePtr->clientData);
-    }
-
-    /* Delete the trace object */
-
-    Tcl_EventuallyFree((char*)tracePtr, TCL_DYNAMIC);
+    Tcl_IncrRefCount(objPtr);
+    Tcl_AddObjErrorInfo(interp, message, length);
+    Tcl_DecrRefCount(objPtr);
 }
 
 /*
@@ -6408,27 +5792,25 @@ Tcl_DeleteTrace(interp, trace)
  *
  * Tcl_AddErrorInfo --
  *
- *	Add information to the "errorInfo" variable that describes the
- *	current error.
+ *	Add information to the errorInfo field that describes the current
+ *	error.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The contents of message are added to the "errorInfo" variable.
- *	If Tcl_Eval has been called since the current value of errorInfo
- *	was set, errorInfo is cleared before adding the new message.
- *	If we are just starting to log an error, errorInfo is initialized
- *	from the error message in the interpreter's result.
+ *	The contents of message are appended to the errorInfo field. If we are
+ *	just starting to log an error, errorInfo is initialized from the error
+ *	message in the interpreter's result.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AddErrorInfo(interp, message)
-    Tcl_Interp *interp;		/* Interpreter to which error information
+Tcl_AddErrorInfo(
+    Tcl_Interp *interp,		/* Interpreter to which error information
 				 * pertains. */
-    CONST char *message;	/* Message to record. */
+    const char *message)	/* Message to record. */
 {
     Tcl_AddObjErrorInfo(interp, message, -1);
 }
@@ -6438,67 +5820,56 @@ Tcl_AddErrorInfo(interp, message)
  *
  * Tcl_AddObjErrorInfo --
  *
- *	Add information to the "errorInfo" variable that describes the
- *	current error. This routine differs from Tcl_AddErrorInfo by
- *	taking a byte pointer and length.
+ *	Add information to the errorInfo field that describes the current
+ *	error. This routine differs from Tcl_AddErrorInfo by taking a byte
+ *	pointer and length.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	"length" bytes from "message" are added to the "errorInfo" variable.
- *	If "length" is negative, use bytes up to the first NULL byte.
- *	If Tcl_EvalObj has been called since the current value of errorInfo
- *	was set, errorInfo is cleared before adding the new message.
- *	If we are just starting to log an error, errorInfo is initialized
- *	from the error message in the interpreter's result.
+ *	"length" bytes from "message" are appended to the errorInfo field. If
+ *	"length" is negative, use bytes up to the first NULL byte. If we are
+ *	just starting to log an error, errorInfo is initialized from the error
+ *	message in the interpreter's result.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AddObjErrorInfo(interp, message, length)
-    Tcl_Interp *interp;		/* Interpreter to which error information
+Tcl_AddObjErrorInfo(
+    Tcl_Interp *interp,		/* Interpreter to which error information
 				 * pertains. */
-    CONST char *message;	/* Points to the first byte of an array of
+    const char *message,	/* Points to the first byte of an array of
 				 * bytes of the message. */
-    int length;			/* The number of bytes in the message.
-				 * If < 0, then append all bytes up to a
-				 * NULL byte. */
+    int length)			/* The number of bytes in the message. If < 0,
+				 * then append all bytes up to a NULL byte. */
 {
     register Interp *iPtr = (Interp *) interp;
-    Tcl_Obj *objPtr;
-    
+
     /*
-     * If we are just starting to log an error, errorInfo is initialized
-     * from the error message in the interpreter's result.
+     * If we are just starting to log an error, errorInfo is initialized from
+     * the error message in the interpreter's result.
      */
 
-    if (!(iPtr->flags & ERR_IN_PROGRESS)) { /* just starting to log error */
-	iPtr->flags |= ERR_IN_PROGRESS;
+    iPtr->flags |= ERR_LEGACY_COPY;
+    if (iPtr->errorInfo == NULL) {
+	if (iPtr->result[0] != 0) {
+	    /*
+	     * The interp's string result is set, apparently by some extension
+	     * making a deprecated direct write to it. That extension may
+	     * expect interp->result to continue to be set, so we'll take
+	     * special pains to avoid clearing it, until we drop support for
+	     * interp->result completely.
+	     */
 
-	if (iPtr->result[0] == 0) {
-	    Tcl_ObjSetVar2(interp, iPtr->execEnvPtr->errorInfo, NULL, 
-	            iPtr->objResultPtr, TCL_GLOBAL_ONLY);
-	} else {		/* use the string result */
-	    objPtr = Tcl_NewStringObj(interp->result, -1);
-	    Tcl_IncrRefCount(objPtr);
-	    Tcl_ObjSetVar2(interp, iPtr->execEnvPtr->errorInfo, NULL, 
-	            objPtr, TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(objPtr);
+	    iPtr->errorInfo = Tcl_NewStringObj(interp->result, -1);
+	} else {
+	    iPtr->errorInfo = iPtr->objResultPtr;
 	}
-
-	/*
-	 * If the errorCode variable wasn't set by the code that generated
-	 * the error, set it to "NONE".
-	 */
-
-	if (!(iPtr->flags & ERROR_CODE_SET)) {
-	    objPtr = Tcl_NewStringObj("NONE", -1);
-	    Tcl_IncrRefCount(objPtr);
-	    Tcl_ObjSetVar2(interp, iPtr->execEnvPtr->errorCode, NULL, 
-	            objPtr, TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(objPtr);
+	Tcl_IncrRefCount(iPtr->errorInfo);
+	if (!iPtr->errorCode) {
+	    Tcl_SetErrorCode(interp, "NONE", NULL);
 	}
     }
 
@@ -6507,11 +5878,12 @@ Tcl_AddObjErrorInfo(interp, message, length)
      */
 
     if (length != 0) {
-	objPtr = Tcl_NewStringObj(message, length);
-	Tcl_IncrRefCount(objPtr);
-	Tcl_ObjSetVar2(interp, iPtr->execEnvPtr->errorInfo, NULL, 
-	        objPtr, (TCL_GLOBAL_ONLY | TCL_APPEND_VALUE));
-	Tcl_DecrRefCount(objPtr); /* free msg object appended above */
+	if (Tcl_IsShared(iPtr->errorInfo)) {
+	    Tcl_DecrRefCount(iPtr->errorInfo);
+	    iPtr->errorInfo = Tcl_DuplicateObj(iPtr->errorInfo);
+	    Tcl_IncrRefCount(iPtr->errorInfo);
+	}
+	Tcl_AppendToObj(iPtr->errorInfo, message, length);
     }
 }
 
@@ -6520,12 +5892,12 @@ Tcl_AddObjErrorInfo(interp, message, length)
  *
  * Tcl_VarEvalVA --
  *
- *	Given a variable number of string arguments, concatenate them
- *	all together and execute the result as a Tcl command.
+ *	Given a variable number of string arguments, concatenate them all
+ *	together and execute the result as a Tcl command.
  *
  * Results:
- *	A standard Tcl return result.  An error message or other result may
- *	be left in the interp's result.
+ *	A standard Tcl return result. An error message or other result may be
+ *	left in the interp's result.
  *
  * Side effects:
  *	Depends on what was done by the command.
@@ -6534,19 +5906,18 @@ Tcl_AddObjErrorInfo(interp, message, length)
  */
 
 int
-Tcl_VarEvalVA (interp, argList)
-    Tcl_Interp *interp;		/* Interpreter in which to evaluate command. */
-    va_list argList;		/* Variable argument list. */
+Tcl_VarEvalVA(
+    Tcl_Interp *interp,		/* Interpreter in which to evaluate command. */
+    va_list argList)		/* Variable argument list. */
 {
     Tcl_DString buf;
     char *string;
     int result;
 
     /*
-     * Copy the strings one after the other into a single larger
-     * string.  Use stack-allocated space for small commands, but if
-     * the command gets too large than call ckalloc to create the
-     * space.
+     * Copy the strings one after the other into a single larger string. Use
+     * stack-allocated space for small commands, but if the command gets too
+     * large than call ckalloc to create the space.
      */
 
     Tcl_DStringInit(&buf);
@@ -6568,27 +5939,28 @@ Tcl_VarEvalVA (interp, argList)
  *
  * Tcl_VarEval --
  *
- *	Given a variable number of string arguments, concatenate them
- *	all together and execute the result as a Tcl command.
+ *	Given a variable number of string arguments, concatenate them all
+ *	together and execute the result as a Tcl command.
  *
  * Results:
- *	A standard Tcl return result.  An error message or other
- *	result may be left in interp->result.
+ *	A standard Tcl return result. An error message or other result may be
+ *	left in interp->result.
  *
  * Side effects:
  *	Depends on what was done by the command.
  *
  *----------------------------------------------------------------------
  */
-	/* VARARGS2 */ /* ARGSUSED */
+	/* ARGSUSED */
 int
-Tcl_VarEval TCL_VARARGS_DEF(Tcl_Interp *,arg1)
+Tcl_VarEval(
+    Tcl_Interp *interp,
+    ...)
 {
-    Tcl_Interp *interp;
     va_list argList;
     int result;
 
-    interp = TCL_VARARGS_START(Tcl_Interp *,arg1,argList);
+    va_start(argList, interp);
     result = Tcl_VarEvalVA(interp, argList);
     va_end(argList);
 
@@ -6596,36 +5968,35 @@ Tcl_VarEval TCL_VARARGS_DEF(Tcl_Interp *,arg1)
 }
 
 /*
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
  * Tcl_GlobalEval --
  *
  *	Evaluate a command at global level in an interpreter.
  *
  * Results:
- *	A standard Tcl result is returned, and the interp's result is
- *	modified accordingly.
+ *	A standard Tcl result is returned, and the interp's result is modified
+ *	accordingly.
  *
  * Side effects:
- *	The command string is executed in interp, and the execution
- *	is carried out in the variable context of global level (no
- *	procedures active), just as if an "uplevel #0" command were
- *	being executed.
+ *	The command string is executed in interp, and the execution is carried
+ *	out in the variable context of global level (no functions active),
+ *	just as if an "uplevel #0" command were being executed.
  *
- ---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 int
-Tcl_GlobalEval(interp, command)
-    Tcl_Interp *interp;		/* Interpreter in which to evaluate command. */
-    CONST char *command;	/* Command to evaluate. */
+Tcl_GlobalEval(
+    Tcl_Interp *interp,		/* Interpreter in which to evaluate command. */
+    const char *command)	/* Command to evaluate. */
 {
     register Interp *iPtr = (Interp *) interp;
     int result;
     CallFrame *savedVarFramePtr;
 
     savedVarFramePtr = iPtr->varFramePtr;
-    iPtr->varFramePtr = NULL;
+    iPtr->varFramePtr = iPtr->rootFramePtr;
     result = Tcl_Eval(interp, command);
     iPtr->varFramePtr = savedVarFramePtr;
     return result;
@@ -6636,8 +6007,8 @@ Tcl_GlobalEval(interp, command)
  *
  * Tcl_SetRecursionLimit --
  *
- *	Set the maximum number of recursive calls that may be active
- *	for an interpreter at once.
+ *	Set the maximum number of recursive calls that may be active for an
+ *	interpreter at once.
  *
  * Results:
  *	The return value is the old limit on nesting for interp.
@@ -6649,10 +6020,10 @@ Tcl_GlobalEval(interp, command)
  */
 
 int
-Tcl_SetRecursionLimit(interp, depth)
-    Tcl_Interp *interp;			/* Interpreter whose nesting limit
-					 * is to be set. */
-    int depth;				/* New value for maximimum depth. */
+Tcl_SetRecursionLimit(
+    Tcl_Interp *interp,		/* Interpreter whose nesting limit is to be
+				 * set. */
+    int depth)			/* New value for maximimum depth. */
 {
     Interp *iPtr = (Interp *) interp;
     int old;
@@ -6669,39 +6040,36 @@ Tcl_SetRecursionLimit(interp, depth)
  *
  * Tcl_AllowExceptions --
  *
- *	Sets a flag in an interpreter so that exceptions can occur
- *	in the next call to Tcl_Eval without them being turned into
- *	errors.
+ *	Sets a flag in an interpreter so that exceptions can occur in the next
+ *	call to Tcl_Eval without them being turned into errors.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The TCL_ALLOW_EXCEPTIONS flag gets set in the interpreter's
- *	evalFlags structure.  See the reference documentation for
- *	more details.
+ *	The TCL_ALLOW_EXCEPTIONS flag gets set in the interpreter's evalFlags
+ *	structure. See the reference documentation for more details.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AllowExceptions(interp)
-    Tcl_Interp *interp;		/* Interpreter in which to set flag. */
+Tcl_AllowExceptions(
+    Tcl_Interp *interp)		/* Interpreter in which to set flag. */
 {
     Interp *iPtr = (Interp *) interp;
 
     iPtr->evalFlags |= TCL_ALLOW_EXCEPTIONS;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_GetVersion
+ * Tcl_GetVersion --
  *
- *	Get the Tcl major, minor, and patchlevel version numbers and
- *      the release type.  A patch is a release type TCL_FINAL_RELEASE
- *      with a patchLevel > 0.
+ *	Get the Tcl major, minor, and patchlevel version numbers and the
+ *	release type. A patch is a release type TCL_FINAL_RELEASE with a
+ *	patchLevel > 0.
  *
  * Results:
  *	None.
@@ -6713,24 +6081,898 @@ Tcl_AllowExceptions(interp)
  */
 
 void
-Tcl_GetVersion(majorV, minorV, patchLevelV, type)
-    int *majorV;
-    int *minorV;
-    int *patchLevelV;
-    int *type;
+Tcl_GetVersion(
+    int *majorV,
+    int *minorV,
+    int *patchLevelV,
+    int *type)
 {
     if (majorV != NULL) {
-        *majorV = TCL_MAJOR_VERSION;
+	*majorV = TCL_MAJOR_VERSION;
     }
     if (minorV != NULL) {
-        *minorV = TCL_MINOR_VERSION;
+	*minorV = TCL_MINOR_VERSION;
     }
     if (patchLevelV != NULL) {
-        *patchLevelV = TCL_RELEASE_SERIAL;
+	*patchLevelV = TCL_RELEASE_SERIAL;
     }
     if (type != NULL) {
-        *type = TCL_RELEASE_LEVEL;
+	*type = TCL_RELEASE_LEVEL;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Math Functions --
+ *
+ *	This page contains the functions that implement all of the built-in
+ *	math functions for expressions.
+ *
+ * Results:
+ *	Each function returns TCL_OK if it succeeds and pushes an Tcl object
+ *	holding the result. If it fails it returns TCL_ERROR and leaves an
+ *	error message in the interpreter's result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ExprCeilFunc(
+    ClientData clientData,	/* Ignored */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter list. */
+{
+    int code;
+    double d;
+    mp_int big;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    code = Tcl_GetDoubleFromObj(interp, objv[1], &d);
+#ifdef ACCEPT_NAN
+    if ((code != TCL_OK) && (objv[1]->typePtr == &tclDoubleType)) {
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+#endif
+    if (code != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (Tcl_GetBignumFromObj(NULL, objv[1], &big) == TCL_OK) {
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(TclCeil(&big)));
+	mp_clear(&big);
+    } else {
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(ceil(d)));
+    }
+    return TCL_OK;
+}
+
+static int
+ExprFloorFunc(
+    ClientData clientData,	/* Ignored */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter list. */
+{
+    int code;
+    double d;
+    mp_int big;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    code = Tcl_GetDoubleFromObj(interp, objv[1], &d);
+#ifdef ACCEPT_NAN
+    if ((code != TCL_OK) && (objv[1]->typePtr == &tclDoubleType)) {
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+#endif
+    if (code != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (Tcl_GetBignumFromObj(NULL, objv[1], &big) == TCL_OK) {
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(TclFloor(&big)));
+	mp_clear(&big);
+    } else {
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(floor(d)));
+    }
+    return TCL_OK;
+}
+
+static int
+ExprIsqrtFunc(
+    ClientData clientData,	/* Ignored */
+    Tcl_Interp *interp,		/* The interpreter in which to execute. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter list. */
+{
+    ClientData ptr;
+    int type;
+    double d;
+    Tcl_WideInt w;
+    mp_int big;
+    int exact = 0;		/* Flag == 1 if the argument can be
+				 * represented in a double as an exact
+				 * integer. */
+
+    /*
+     * Check syntax.
+     */
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Make sure that the arg is a number.
+     */
+
+    if (TclGetNumberFromObj(interp, objv[1], &ptr, &type) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    switch (type) {
+    case TCL_NUMBER_NAN:
+	Tcl_GetDoubleFromObj(interp, objv[1], &d);
+	return TCL_ERROR;
+    case TCL_NUMBER_DOUBLE:
+	d = *((const double *) ptr);
+	if (d < 0) {
+	    goto negarg;
+	}
+#ifdef IEEE_FLOATING_POINT
+	if (d <= MAX_EXACT) {
+	    exact = 1;
+	}
+#endif
+	if (!exact) {
+	    if (Tcl_InitBignumFromDouble(interp, d, &big) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	}
+	break;
+    case TCL_NUMBER_BIG:
+	if (Tcl_GetBignumFromObj(interp, objv[1], &big) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (SIGN(&big) == MP_NEG) {
+	    mp_clear(&big);
+	    goto negarg;
+	}
+	break;
+    default:
+	if (Tcl_GetWideIntFromObj(interp, objv[1], &w) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (w < 0) {
+	    goto negarg;
+	}
+	d = (double) w;
+#ifdef IEEE_FLOATING_POINT
+	if (d < MAX_EXACT) {
+	    exact = 1;
+	}
+#endif
+	if (!exact) {
+	    Tcl_GetBignumFromObj(interp, objv[1], &big);
+	}
+	break;
+    }
+
+    if (exact) {
+	Tcl_SetObjResult(interp, Tcl_NewWideIntObj((Tcl_WideInt) sqrt(d)));
+    } else {
+	mp_int root;
+
+	mp_init(&root);
+	mp_sqrt(&big, &root);
+	mp_clear(&big);
+	Tcl_SetObjResult(interp, Tcl_NewBignumObj(&root));
+    }
+
+    return TCL_OK;
+
+  negarg:
+    Tcl_SetObjResult(interp,
+	    Tcl_NewStringObj("square root of negative argument", -1));
+    return TCL_ERROR;
+}
+
+static int
+ExprSqrtFunc(
+    ClientData clientData,	/* Ignored */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter list. */
+{
+    int code;
+    double d;
+    mp_int big;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    code = Tcl_GetDoubleFromObj(interp, objv[1], &d);
+#ifdef ACCEPT_NAN
+    if ((code != TCL_OK) && (objv[1]->typePtr == &tclDoubleType)) {
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+#endif
+    if (code != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if ((d >= 0.0) && TclIsInfinite(d)
+	    && (Tcl_GetBignumFromObj(NULL, objv[1], &big) == TCL_OK)) {
+	mp_int root;
+
+	mp_init(&root);
+	mp_sqrt(&big, &root);
+	mp_clear(&big);
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(TclBignumToDouble(&root)));
+	mp_clear(&root);
+    } else {
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(sqrt(d)));
+    }
+    return TCL_OK;
+}
+
+static int
+ExprUnaryFunc(
+    ClientData clientData,	/* Contains the address of a function that
+				 * takes one double argument and returns a
+				 * double result. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count */
+    Tcl_Obj *const *objv)	/* Actual parameter list */
+{
+    int code;
+    double d;
+    double (*func)(double) = (double (*)(double)) clientData;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    code = Tcl_GetDoubleFromObj(interp, objv[1], &d);
+#ifdef ACCEPT_NAN
+    if ((code != TCL_OK) && (objv[1]->typePtr == &tclDoubleType)) {
+	d = objv[1]->internalRep.doubleValue;
+	Tcl_ResetResult(interp);
+	code = TCL_OK;
+    }
+#endif
+    if (code != TCL_OK) {
+	return TCL_ERROR;
+    }
+    errno = 0;
+    return CheckDoubleResult(interp, (*func)(d));
+}
+
+static int
+CheckDoubleResult(
+    Tcl_Interp *interp,
+    double dResult)
+{
+#ifndef ACCEPT_NAN
+    if (TclIsNaN(dResult)) {
+	TclExprFloatError(interp, dResult);
+	return TCL_ERROR;
+    }
+#endif
+    if ((errno == ERANGE) && ((dResult == 0.0) || TclIsInfinite(dResult))) {
+	/*
+	 * When ERANGE signals under/overflow, just accept 0.0 or +/-Inf
+	 */
+    } else if (errno != 0) {
+	/*
+	 * Report other errno values as errors.
+	 */
+
+	TclExprFloatError(interp, dResult);
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewDoubleObj(dResult));
+    return TCL_OK;
+}
+
+static int
+ExprBinaryFunc(
+    ClientData clientData,	/* Contains the address of a function that
+				 * takes two double arguments and returns a
+				 * double result. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Parameter vector. */
+{
+    int code;
+    double d1, d2;
+    double (*func)(double, double) = (double (*)(double, double)) clientData;
+
+    if (objc != 3) {
+	MathFuncWrongNumArgs(interp, 3, objc, objv);
+	return TCL_ERROR;
+    }
+    code = Tcl_GetDoubleFromObj(interp, objv[1], &d1);
+#ifdef ACCEPT_NAN
+    if ((code != TCL_OK) && (objv[1]->typePtr == &tclDoubleType)) {
+	d1 = objv[1]->internalRep.doubleValue;
+	Tcl_ResetResult(interp);
+	code = TCL_OK;
+    }
+#endif
+    if (code != TCL_OK) {
+	return TCL_ERROR;
+    }
+    code = Tcl_GetDoubleFromObj(interp, objv[2], &d2);
+#ifdef ACCEPT_NAN
+    if ((code != TCL_OK) && (objv[2]->typePtr == &tclDoubleType)) {
+	d2 = objv[2]->internalRep.doubleValue;
+	Tcl_ResetResult(interp);
+	code = TCL_OK;
+    }
+#endif
+    if (code != TCL_OK) {
+	return TCL_ERROR;
+    }
+    errno = 0;
+    return CheckDoubleResult(interp, (*func)(d1, d2));
+}
+
+static int
+ExprAbsFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Parameter vector. */
+{
+    ClientData ptr;
+    int type;
+    mp_int big;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+
+    if (TclGetNumberFromObj(interp, objv[1], &ptr, &type) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (type == TCL_NUMBER_LONG) {
+	long l = *((const long *) ptr);
+
+	if (l > (long)0) {
+	    goto unChanged;
+	} else if (l == (long)0) {
+	    const char *string = objv[1]->bytes;
+	    if (string) {
+		while (*string != '0') {
+		    if (*string == '-') {
+			Tcl_SetObjResult(interp, Tcl_NewLongObj(0));
+			return TCL_OK;
+		    }
+		    string++;
+		}
+	    }
+	    goto unChanged;
+	} else if (l == LONG_MIN) {
+	    TclBNInitBignumFromLong(&big, l);
+	    goto tooLarge;
+	}
+	Tcl_SetObjResult(interp, Tcl_NewLongObj(-l));
+	return TCL_OK;
+    }
+
+    if (type == TCL_NUMBER_DOUBLE) {
+	double d = *((const double *) ptr);
+	static const double poszero = 0.0;
+
+	/* We need to distinguish here between positive 0.0 and
+	 * negative -0.0, see Bug ID #2954959.
+	 */
+	if (d == -0.0) {
+		if (!memcmp(&d, &poszero, sizeof(double))) {
+	    goto unChanged;
+	    }
+	} else {
+	    if (d > -0.0) {
+		goto unChanged;
+	    }
+	}
+	Tcl_SetObjResult(interp, Tcl_NewDoubleObj(-d));
+	return TCL_OK;
+    }
+
+#ifndef NO_WIDE_TYPE
+    if (type == TCL_NUMBER_WIDE) {
+	Tcl_WideInt w = *((const Tcl_WideInt *) ptr);
+
+	if (w >= (Tcl_WideInt)0) {
+	    goto unChanged;
+	}
+	if (w == LLONG_MIN) {
+	    TclBNInitBignumFromWideInt(&big, w);
+	    goto tooLarge;
+	}
+	Tcl_SetObjResult(interp, Tcl_NewWideIntObj(-w));
+	return TCL_OK;
+    }
+#endif
+
+    if (type == TCL_NUMBER_BIG) {
+	/* TODO: const correctness ? */
+	if (mp_cmp_d((mp_int *) ptr, 0) == MP_LT) {
+	    Tcl_GetBignumFromObj(NULL, objv[1], &big);
+	tooLarge:
+	    mp_neg(&big, &big);
+	    Tcl_SetObjResult(interp, Tcl_NewBignumObj(&big));
+	} else {
+	unChanged:
+	    Tcl_SetObjResult(interp, objv[1]);
+	}
+	return TCL_OK;
+    }
+
+    if (type == TCL_NUMBER_NAN) {
+#ifdef ACCEPT_NAN
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+#else
+	double d;
+	Tcl_GetDoubleFromObj(interp, objv[1], &d);
+	return TCL_ERROR;
+#endif
+    }
+    return TCL_OK;
+}
+
+static int
+ExprBoolFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    int value;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    if (Tcl_GetBooleanFromObj(interp, objv[1], &value) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
+    return TCL_OK;
+}
+
+static int
+ExprDoubleFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    double dResult;
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    if (Tcl_GetDoubleFromObj(interp, objv[1], &dResult) != TCL_OK) {
+#ifdef ACCEPT_NAN
+	if (objv[1]->typePtr == &tclDoubleType) {
+	    Tcl_SetObjResult(interp, objv[1]);
+	    return TCL_OK;
+	}
+#endif
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewDoubleObj(dResult));
+    return TCL_OK;
+}
+
+static int
+ExprEntierFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    double d;
+    int type;
+    ClientData ptr;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+    if (TclGetNumberFromObj(interp, objv[1], &ptr, &type) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (type == TCL_NUMBER_DOUBLE) {
+	d = *((const double *) ptr);
+	if ((d >= (double)LONG_MAX) || (d <= (double)LONG_MIN)) {
+	    mp_int big;
+
+	    if (Tcl_InitBignumFromDouble(interp, d, &big) != TCL_OK) {
+		/* Infinity */
+		return TCL_ERROR;
+	    }
+	    Tcl_SetObjResult(interp, Tcl_NewBignumObj(&big));
+	    return TCL_OK;
+	} else {
+	    long result = (long) d;
+
+	    Tcl_SetObjResult(interp, Tcl_NewLongObj(result));
+	    return TCL_OK;
+	}
+    }
+
+    if (type != TCL_NUMBER_NAN) {
+	/*
+	 * All integers are already of integer type.
+	 */
+
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+
+    /*
+     * Get the error message for NaN.
+     */
+
+    Tcl_GetDoubleFromObj(interp, objv[1], &d);
+    return TCL_ERROR;
+}
+
+static int
+ExprIntFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    long iResult;
+    Tcl_Obj *objPtr;
+    if (ExprEntierFunc(NULL, interp, objc, objv) != TCL_OK) {
+	return TCL_ERROR;
     }
+    objPtr = Tcl_GetObjResult(interp);
+    if (TclGetLongFromObj(NULL, objPtr, &iResult) != TCL_OK) {
+	/*
+	 * Truncate the bignum; keep only bits in long range.
+	 */
+
+	mp_int big;
+
+	Tcl_GetBignumFromObj(NULL, objPtr, &big);
+	mp_mod_2d(&big, (int) CHAR_BIT * sizeof(long), &big);
+	objPtr = Tcl_NewBignumObj(&big);
+	Tcl_IncrRefCount(objPtr);
+	TclGetLongFromObj(NULL, objPtr, &iResult);
+	Tcl_DecrRefCount(objPtr);
+    }
+    Tcl_SetObjResult(interp, Tcl_NewLongObj(iResult));
+    return TCL_OK;
+}
+
+static int
+ExprWideFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    Tcl_WideInt wResult;
+    Tcl_Obj *objPtr;
+    if (ExprEntierFunc(NULL, interp, objc, objv) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    objPtr = Tcl_GetObjResult(interp);
+    if (Tcl_GetWideIntFromObj(NULL, objPtr, &wResult) != TCL_OK) {
+	/*
+	 * Truncate the bignum; keep only bits in wide int range.
+	 */
+
+	mp_int big;
+
+	Tcl_GetBignumFromObj(NULL, objPtr, &big);
+	mp_mod_2d(&big, (int) CHAR_BIT * sizeof(Tcl_WideInt), &big);
+	objPtr = Tcl_NewBignumObj(&big);
+	Tcl_IncrRefCount(objPtr);
+	Tcl_GetWideIntFromObj(NULL, objPtr, &wResult);
+	Tcl_DecrRefCount(objPtr);
+    }
+    Tcl_SetObjResult(interp, Tcl_NewWideIntObj(wResult));
+    return TCL_OK;
+}
+
+static int
+ExprRandFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    Interp *iPtr = (Interp *) interp;
+    double dResult;
+    long tmp;			/* Algorithm assumes at least 32 bits. Only
+				 * long guarantees that. See below. */
+    Tcl_Obj *oResult;
+
+    if (objc != 1) {
+	MathFuncWrongNumArgs(interp, 1, objc, objv);
+	return TCL_ERROR;
+    }
+
+    if (!(iPtr->flags & RAND_SEED_INITIALIZED)) {
+	iPtr->flags |= RAND_SEED_INITIALIZED;
+
+	/*
+	 * Take into consideration the thread this interp is running in order
+	 * to insure different seeds in different threads (bug #416643)
+	 */
+
+	iPtr->randSeed = TclpGetClicks() + (PTR2INT(Tcl_GetCurrentThread())<<12);
+
+	/*
+	 * Make sure 1 <= randSeed <= (2^31) - 2. See below.
+	 */
+
+	iPtr->randSeed &= (unsigned long) 0x7fffffff;
+	if ((iPtr->randSeed == 0) || (iPtr->randSeed == 0x7fffffff)) {
+	    iPtr->randSeed ^= 123459876;
+	}
+    }
+
+    /*
+     * Generate the random number using the linear congruential generator
+     * defined by the following recurrence:
+     *		seed = ( IA * seed ) mod IM
+     * where IA is 16807 and IM is (2^31) - 1. The recurrence maps a seed in
+     * the range [1, IM - 1] to a new seed in that same range. The recurrence
+     * maps IM to 0, and maps 0 back to 0, so those two values must not be
+     * allowed as initial values of seed.
+     *
+     * In order to avoid potential problems with integer overflow, the
+     * recurrence is implemented in terms of additional constants IQ and IR
+     * such that
+     *		IM = IA*IQ + IR
+     * None of the operations in the implementation overflows a 32-bit signed
+     * integer, and the C type long is guaranteed to be at least 32 bits wide.
+     *
+     * For more details on how this algorithm works, refer to the following
+     * papers:
+     *
+     *	S.K. Park & K.W. Miller, "Random number generators: good ones are hard
+     *	to find," Comm ACM 31(10):1192-1201, Oct 1988
+     *
+     *	W.H. Press & S.A. Teukolsky, "Portable random number generators,"
+     *	Computers in Physics 6(5):522-524, Sep/Oct 1992.
+     */
+
+#define RAND_IA		16807
+#define RAND_IM		2147483647
+#define RAND_IQ		127773
+#define RAND_IR		2836
+#define RAND_MASK	123459876
+
+    tmp = iPtr->randSeed/RAND_IQ;
+    iPtr->randSeed = RAND_IA*(iPtr->randSeed - tmp*RAND_IQ) - RAND_IR*tmp;
+    if (iPtr->randSeed < 0) {
+	iPtr->randSeed += RAND_IM;
+    }
+
+    /*
+     * Since the recurrence keeps seed values in the range [1, RAND_IM - 1],
+     * dividing by RAND_IM yields a double in the range (0, 1).
+     */
+
+    dResult = iPtr->randSeed * (1.0/RAND_IM);
+
+    /*
+     * Push a Tcl object with the result.
+     */
+
+    TclNewDoubleObj(oResult, dResult);
+    Tcl_SetObjResult(interp, oResult);
+    return TCL_OK;
+}
+
+static int
+ExprRoundFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Parameter vector. */
+{
+    double d;
+    ClientData ptr;
+    int type;
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+
+    if (TclGetNumberFromObj(interp, objv[1], &ptr, &type) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (type == TCL_NUMBER_DOUBLE) {
+	double fractPart, intPart;
+	long max = LONG_MAX, min = LONG_MIN;
+
+	fractPart = modf(*((const double *) ptr), &intPart);
+	if (fractPart <= -0.5) {
+	    min++;
+	} else if (fractPart >= 0.5) {
+	    max--;
+	}
+	if ((intPart >= (double)max) || (intPart <= (double)min)) {
+	    mp_int big;
+
+	    if (Tcl_InitBignumFromDouble(interp, intPart, &big) != TCL_OK) {
+		/* Infinity */
+		return TCL_ERROR;
+	    }
+	    if (fractPart <= -0.5) {
+		mp_sub_d(&big, 1, &big);
+	    } else if (fractPart >= 0.5) {
+		mp_add_d(&big, 1, &big);
+	    }
+	    Tcl_SetObjResult(interp, Tcl_NewBignumObj(&big));
+	    return TCL_OK;
+	} else {
+	    long result = (long)intPart;
+
+	    if (fractPart <= -0.5) {
+		result--;
+	    } else if (fractPart >= 0.5) {
+		result++;
+	    }
+	    Tcl_SetObjResult(interp, Tcl_NewLongObj(result));
+	    return TCL_OK;
+	}
+    }
+
+    if (type != TCL_NUMBER_NAN) {
+	/*
+	 * All integers are already rounded
+	 */
+
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+
+    /*
+     * Get the error message for NaN.
+     */
+
+    Tcl_GetDoubleFromObj(interp, objv[1], &d);
+    return TCL_ERROR;
+}
+
+static int
+ExprSrandFunc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp,		/* The interpreter in which to execute the
+				 * function. */
+    int objc,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Parameter vector. */
+{
+    Interp *iPtr = (Interp *) interp;
+    long i = 0;			/* Initialized to avoid compiler warning. */
+
+    /*
+     * Convert argument and use it to reset the seed.
+     */
+
+    if (objc != 2) {
+	MathFuncWrongNumArgs(interp, 2, objc, objv);
+	return TCL_ERROR;
+    }
+
+    if (TclGetLongFromObj(NULL, objv[1], &i) != TCL_OK) {
+	Tcl_Obj *objPtr;
+	mp_int big;
+
+	if (Tcl_GetBignumFromObj(interp, objv[1], &big) != TCL_OK) {
+	    /* TODO: more ::errorInfo here? or in caller? */
+	    return TCL_ERROR;
+	}
+
+	mp_mod_2d(&big, (int) CHAR_BIT * sizeof(long), &big);
+	objPtr = Tcl_NewBignumObj(&big);
+	Tcl_IncrRefCount(objPtr);
+	TclGetLongFromObj(NULL, objPtr, &i);
+	Tcl_DecrRefCount(objPtr);
+    }
+
+    /*
+     * Reset the seed. Make sure 1 <= randSeed <= 2^31 - 2. See comments in
+     * ExprRandFunc() for more details.
+     */
+
+    iPtr->flags |= RAND_SEED_INITIALIZED;
+    iPtr->randSeed = i;
+    iPtr->randSeed &= (unsigned long) 0x7fffffff;
+    if ((iPtr->randSeed == 0) || (iPtr->randSeed == 0x7fffffff)) {
+	iPtr->randSeed ^= 123459876;
+    }
+
+    /*
+     * To avoid duplicating the random number generation code we simply clean
+     * up our state and call the real random number function. That function
+     * will always succeed.
+     */
+
+    return ExprRandFunc(clientData, interp, 1, objv);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MathFuncWrongNumArgs --
+ *
+ *	Generate an error message when a math function presents the wrong
+ *	number of arguments.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	An error message is stored in the interpreter result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+MathFuncWrongNumArgs(
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int expected,		/* Formal parameter count. */
+    int found,			/* Actual parameter count. */
+    Tcl_Obj *const *objv)	/* Actual parameter vector. */
+{
+    const char *name = Tcl_GetString(objv[0]);
+    const char *tail = name + strlen(name);
+
+    while (tail > name+1) {
+	--tail;
+	if (*tail == ':' && tail[-1] == ':') {
+	    name = tail+1;
+	    break;
+	}
+    }
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+	    "too %s arguments for math function \"%s\"",
+	    (found < expected ? "few" : "many"), name));
 }
 #ifdef USE_DTRACE
 
@@ -6755,7 +6997,7 @@ DTraceObjCmd(
     ClientData dummy,		/* Not used. */
     Tcl_Interp *interp,		/* Current interpreter. */
     int objc,			/* Number of arguments. */
-    Tcl_Obj *CONST objv[])	/* Argument objects. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     if (TCL_DTRACE_TCL_PROBE_ENABLED()) {
 	char *a[10];
@@ -6769,6 +7011,60 @@ DTraceObjCmd(
     }
     return TCL_OK;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclDTraceInfo --
+ *
+ *	Extract information from a TIP280 dict for use by DTrace probes.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclDTraceInfo(
+    Tcl_Obj *info,
+    char **args,
+    int *argsi)
+{
+    static Tcl_Obj *keys[7] = { NULL };
+    Tcl_Obj **k = keys, *val;
+    int i;
+
+    if (!*k) {
+	TclNewLiteralStringObj(keys[0], "cmd");
+	TclNewLiteralStringObj(keys[1], "type");
+	TclNewLiteralStringObj(keys[2], "proc");
+	TclNewLiteralStringObj(keys[3], "file");
+	TclNewLiteralStringObj(keys[4], "lambda");
+	TclNewLiteralStringObj(keys[5], "line");
+	TclNewLiteralStringObj(keys[6], "level");
+    }
+    for (i = 0; i < 4; i++) {
+	Tcl_DictObjGet(NULL, info, *k++, &val);
+	args[i] = val ? TclGetString(val) : NULL;
+    }
+    if (!args[2]) {
+	Tcl_DictObjGet(NULL, info, *k, &val);
+	args[2] = val ? TclGetString(val) : NULL;
+    }
+    k++;
+    for (i = 0; i < 2; i++) {
+	Tcl_DictObjGet(NULL, info, *k++, &val);
+	if (val) {
+	    TclGetIntFromObj(NULL, val, &(argsi[i]));
+	} else {
+	    argsi[i] = 0;
+	}
+    }
+}
 
 TCL_DTRACE_DEBUG_LOG()
 
diff --git a/generic/tclBinary.c b/generic/tclBinary.c
index 8eb3ac3..dbb296b 100644
--- a/generic/tclBinary.c
+++ b/generic/tclBinary.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * tclBinary.c --
  *
  *	This file contains the implementation of the "binary" Tcl built-in
@@ -7,12 +7,13 @@
  * Copyright (c) 1997 by Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
+#include "tommath.h"
+
 #include <math.h>
 
 /*
@@ -24,21 +25,27 @@
 #define BINARY_NOCOUNT -2	/* No count was specified in format. */
 
 /*
- * The following defines the maximum number of different (integer)
- * numbers placed in the object cache by 'binary scan' before it bails
- * out and switches back to Plan A (creating a new object for each
- * value.)  Theoretically, it would be possible to keep the cache
- * about for the values that are already in it, but that makes the
- * code slower in practise when overflow happens, and makes little
- * odds the rest of the time (as measured on my machine.)  It is also
- * slower (on the sample I tried at least) to grow the cache to hold
- * all items we might want to put in it; presumably the extra cost of
- * managing the memory for the enlarged table outweighs the benefit
- * from allocating fewer objects.  This is probably because as the
- * number of objects increases, the likelihood of reuse of any
- * particular one drops, and there is very little gain from larger
- * maximum cache sizes (the value below is chosen to allow caching to
- * work in full with conversion of bytes.) - DKF
+ * The following flags may be ORed together and returned by GetFormatSpec
+ */
+
+#define BINARY_SIGNED 0		/* Field to be read as signed data */
+#define BINARY_UNSIGNED 1	/* Field to be read as unsigned data */
+
+/*
+ * The following defines the maximum number of different (integer) numbers
+ * placed in the object cache by 'binary scan' before it bails out and
+ * switches back to Plan A (creating a new object for each value.)
+ * Theoretically, it would be possible to keep the cache about for the values
+ * that are already in it, but that makes the code slower in practise when
+ * overflow happens, and makes little odds the rest of the time (as measured
+ * on my machine.) It is also slower (on the sample I tried at least) to grow
+ * the cache to hold all items we might want to put in it; presumably the
+ * extra cost of managing the memory for the enlarged table outweighs the
+ * benefit from allocating fewer objects. This is probably because as the
+ * number of objects increases, the likelihood of reuse of any particular one
+ * drops, and there is very little gain from larger maximum cache sizes (the
+ * value below is chosen to allow caching to work in full with conversion of
+ * bytes.) - DKF
  */
 
 #define BINARY_SCAN_MAX_CACHE	260
@@ -47,46 +54,46 @@
  * Prototypes for local procedures defined in this file:
  */
 
-static void		DupByteArrayInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *copyPtr));
-static int		FormatNumber _ANSI_ARGS_((Tcl_Interp *interp, int type,
-			    Tcl_Obj *src, unsigned char **cursorPtr));
-static void		CopyNumber _ANSI_ARGS_((CONST VOID *from, VOID *to,
-			    unsigned int length));
-static void		FreeByteArrayInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr));
-static int		GetFormatSpec _ANSI_ARGS_((char **formatPtr,
-			    char *cmdPtr, int *countPtr));
-static Tcl_Obj *	ScanNumber _ANSI_ARGS_((unsigned char *buffer,
-			    int type, Tcl_HashTable **numberCachePtr));
-static int		SetByteArrayFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static void		UpdateStringOfByteArray _ANSI_ARGS_((Tcl_Obj *listPtr));
-static void		DeleteScanNumberCache _ANSI_ARGS_((
-			    Tcl_HashTable *numberCachePtr));
+static void		DupByteArrayInternalRep(Tcl_Obj *srcPtr,
+			    Tcl_Obj *copyPtr);
+static int		FormatNumber(Tcl_Interp *interp, int type,
+			    Tcl_Obj *src, unsigned char **cursorPtr);
+static void		FreeByteArrayInternalRep(Tcl_Obj *objPtr);
+static int		GetFormatSpec(char **formatPtr, char *cmdPtr,
+			    int *countPtr, int *flagsPtr);
+static Tcl_Obj *	ScanNumber(unsigned char *buffer, int type,
+			    int flags, Tcl_HashTable **numberCachePtr);
+static int		SetByteArrayFromAny(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr);
+static void		UpdateStringOfByteArray(Tcl_Obj *listPtr);
+static void		DeleteScanNumberCache(Tcl_HashTable *numberCachePtr);
+static int		NeedReversing(int format);
+static void		CopyNumber(const void *from, void *to,
+			    unsigned int length, int type);
 
 /*
- * The following object type represents an array of bytes.  An array of
- * bytes is not equivalent to an internationalized string.  Conceptually, a
- * string is an array of 16-bit quantities organized as a sequence of properly
- * formed UTF-8 characters, while a ByteArray is an array of 8-bit quantities.
+ * The following object type represents an array of bytes. An array of bytes
+ * is not equivalent to an internationalized string. Conceptually, a string is
+ * an array of 16-bit quantities organized as a sequence of properly formed
+ * UTF-8 characters, while a ByteArray is an array of 8-bit quantities.
  * Accessor functions are provided to convert a ByteArray to a String or a
- * String to a ByteArray.  Two or more consecutive bytes in an array of bytes
+ * String to a ByteArray. Two or more consecutive bytes in an array of bytes
  * may look like a single UTF-8 character if the array is casually treated as
- * a string.  But obtaining the String from a ByteArray is guaranteed to
- * produced properly formed UTF-8 sequences so that there is a one-to-one
- * map between bytes and characters.
+ * a string. But obtaining the String from a ByteArray is guaranteed to
+ * produced properly formed UTF-8 sequences so that there is a one-to-one map
+ * between bytes and characters.
  *
  * Converting a ByteArray to a String proceeds by casting each byte in the
  * array to a 16-bit quantity, treating that number as a Unicode character,
- * and storing the UTF-8 version of that Unicode character in the String.
- * For ByteArrays consisting entirely of values 1..127, the corresponding
- * String representation is the same as the ByteArray representation.
+ * and storing the UTF-8 version of that Unicode character in the String. For
+ * ByteArrays consisting entirely of values 1..127, the corresponding String
+ * representation is the same as the ByteArray representation.
  *
  * Converting a String to a ByteArray proceeds by getting the Unicode
- * representation of each character in the String, casting it to a
- * byte by truncating the upper 8 bits, and then storing the byte in the
- * ByteArray.  Converting from ByteArray to String and back to ByteArray
- * is not lossy, but converting an arbitrary String to a ByteArray may be.
+ * representation of each character in the String, casting it to a byte by
+ * truncating the upper 8 bits, and then storing the byte in the ByteArray.
+ * Converting from ByteArray to String and back to ByteArray is not lossy, but
+ * converting an arbitrary String to a ByteArray may be.
  */
 
 Tcl_ObjType tclByteArrayType = {
@@ -98,10 +105,10 @@ Tcl_ObjType tclByteArrayType = {
 };
 
 /*
- * The following structure is the internal rep for a ByteArray object.
- * Keeps track of how much memory has been used and how much has been
- * allocated for the byte array to enable growing and shrinking of the
- * ByteArray object with fewer mallocs.  
+ * The following structure is the internal rep for a ByteArray object. Keeps
+ * track of how much memory has been used and how much has been allocated for
+ * the byte array to enable growing and shrinking of the ByteArray object with
+ * fewer mallocs.
  */
 
 typedef struct ByteArray {
@@ -109,48 +116,46 @@ typedef struct ByteArray {
 				 * array. */
     int allocated;		/* The amount of space actually allocated
 				 * minus 1 byte. */
-    unsigned char bytes[4];	/* The array of bytes.  The actual size of
-				 * this field depends on the 'allocated' field
+    unsigned char bytes[4];	/* The array of bytes. The actual size of this
+				 * field depends on the 'allocated' field
 				 * above. */
 } ByteArray;
 
-#define BYTEARRAY_SIZE(len)	\
+#define BYTEARRAY_SIZE(len) \
 		((unsigned) (sizeof(ByteArray) - 4 + (len)))
 #define GET_BYTEARRAY(objPtr) \
-		((ByteArray *) (objPtr)->internalRep.otherValuePtr)
+		((ByteArray *) (objPtr)->internalRep.twoPtrValue.ptr1)
 #define SET_BYTEARRAY(objPtr, baPtr) \
-		(objPtr)->internalRep.otherValuePtr = (VOID *) (baPtr)
+		(objPtr)->internalRep.twoPtrValue.ptr1 = (VOID *) (baPtr)
 
 
 /*
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
  * Tcl_NewByteArrayObj --
  *
- *	This procedure is creates a new ByteArray object and initializes
- *	it from the given array of bytes.
+ *	This procedure is creates a new ByteArray object and initializes it
+ *	from the given array of bytes.
  *
  * Results:
- *	The newly create object is returned.  This object will have no
- *	initial string representation.  The returned object has a ref count
- *	of 0.
+ *	The newly create object is returned. This object will have no initial
+ *	string representation. The returned object has a ref count of 0.
  *
  * Side effects:
  *	Memory allocated for new object and copy of byte array argument.
  *
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 #ifdef TCL_MEM_DEBUG
 #undef Tcl_NewByteArrayObj
 
-
 Tcl_Obj *
-Tcl_NewByteArrayObj(bytes, length)
-    CONST unsigned char *bytes;	/* The array of bytes used to initialize
-				 * the new object. */
-    int length;			/* Length of the array of bytes, which must
-				 * be >= 0. */
+Tcl_NewByteArrayObj(
+    const unsigned char *bytes,	/* The array of bytes used to initialize the
+				 * new object. */
+    int length)			/* Length of the array of bytes, which must be
+				 * >= 0. */
 {
     return Tcl_DbNewByteArrayObj(bytes, length, "unknown", 0);
 }
@@ -158,11 +163,11 @@ Tcl_NewByteArrayObj(bytes, length)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewByteArrayObj(bytes, length)
-    CONST unsigned char *bytes;	/* The array of bytes used to initialize
-				 * the new object. */
-    int length;			/* Length of the array of bytes, which must
-				 * be >= 0. */
+Tcl_NewByteArrayObj(
+    const unsigned char *bytes,	/* The array of bytes used to initialize the
+				 * new object. */
+    int length)			/* Length of the array of bytes, which must be
+				 * >= 0. */
 {
     Tcl_Obj *objPtr;
 
@@ -173,7 +178,7 @@ Tcl_NewByteArrayObj(bytes, length)
 #endif /* TCL_MEM_DEBUG */
 
 /*
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
  * Tcl_DbNewByteArrayObj --
  *
@@ -188,28 +193,27 @@ Tcl_NewByteArrayObj(bytes, length)
  *	result of calling Tcl_NewByteArrayObj.
  *
  * Results:
- *	The newly create object is returned.  This object will have no
- *	initial string representation.  The returned object has a ref count
- *	of 0.
+ *	The newly create object is returned. This object will have no initial
+ *	string representation. The returned object has a ref count of 0.
  *
  * Side effects:
  *	Memory allocated for new object and copy of byte array argument.
  *
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewByteArrayObj(bytes, length, file, line)
-    CONST unsigned char *bytes;	/* The array of bytes used to initialize
-				 * the new object. */
-    int length;			/* Length of the array of bytes, which must
-				 * be >= 0. */
-    CONST char *file;		/* The name of the source file calling this
+Tcl_DbNewByteArrayObj(
+    const unsigned char *bytes,	/* The array of bytes used to initialize the
+				 * new object. */
+    int length,			/* Length of the array of bytes, which must be
+				 * >= 0. */
+    const char *file,		/* The name of the source file calling this
 				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     Tcl_Obj *objPtr;
 
@@ -221,15 +225,15 @@ Tcl_DbNewByteArrayObj(bytes, length, file, line)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewByteArrayObj(bytes, length, file, line)
-    CONST unsigned char *bytes;	/* The array of bytes used to initialize
-				 * the new object. */
-    int length;			/* Length of the array of bytes, which must
-				 * be >= 0. */
-    CONST char *file;		/* The name of the source file calling this
+Tcl_DbNewByteArrayObj(
+    const unsigned char *bytes,	/* The array of bytes used to initialize the
+				 * new object. */
+    int length,			/* Length of the array of bytes, which must be
+				 * >= 0. */
+    const char *file,		/* The name of the source file calling this
 				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewByteArrayObj(bytes, length);
 }
@@ -247,37 +251,38 @@ Tcl_DbNewByteArrayObj(bytes, length, file, line)
  *	None.
  *
  * Side effects:
- *	The object's old string rep and internal rep is freed.
- *	Memory allocated for copy of byte array argument.
+ *	The object's old string rep and internal rep is freed. Memory
+ *	allocated for copy of byte array argument.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetByteArrayObj(objPtr, bytes, length)
-    Tcl_Obj *objPtr;		/* Object to initialize as a ByteArray. */
-    CONST unsigned char *bytes;	/* The array of bytes to use as the new
+Tcl_SetByteArrayObj(
+    Tcl_Obj *objPtr,		/* Object to initialize as a ByteArray. */
+    const unsigned char *bytes,	/* The array of bytes to use as the new
 				 * value. */
-    int length;			/* Length of the array of bytes, which must
-				 * be >= 0. */
+    int length)			/* Length of the array of bytes, which must be
+				 * >= 0. */
 {
-    Tcl_ObjType *typePtr;
     ByteArray *byteArrayPtr;
 
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetByteArrayObj called with shared object");
-    }
-    typePtr = objPtr->typePtr;
-    if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
-	(*typePtr->freeIntRepProc)(objPtr);
+	Tcl_Panic("%s called with shared object", "Tcl_SetByteArrayObj");
     }
-    Tcl_InvalidateStringRep(objPtr);
+    TclFreeIntRep(objPtr);
+    TclInvalidateStringRep(objPtr);
 
+    if (length < 0) {
+	length = 0;
+    }
     byteArrayPtr = (ByteArray *) ckalloc(BYTEARRAY_SIZE(length));
     byteArrayPtr->used = length;
     byteArrayPtr->allocated = length;
-    memcpy((VOID *) byteArrayPtr->bytes, (VOID *) bytes, (size_t) length);
 
+    if ((bytes != NULL) && (length > 0)) {
+	memcpy(byteArrayPtr->bytes, bytes, (size_t) length);
+    }
     objPtr->typePtr = &tclByteArrayType;
     SET_BYTEARRAY(objPtr, byteArrayPtr);
 }
@@ -287,28 +292,30 @@ Tcl_SetByteArrayObj(objPtr, bytes, length)
  *
  * Tcl_GetByteArrayFromObj --
  *
- *	Attempt to get the array of bytes from the Tcl object.  If the
- *	object is not already a ByteArray object, an attempt will be
- *	made to convert it to one.
+ *	Attempt to get the array of bytes from the Tcl object. If the object
+ *	is not already a ByteArray object, an attempt will be made to convert
+ *	it to one.
  *
  * Results:
  *	Pointer to array of bytes representing the ByteArray object.
  *
  * Side effects:
- *	Frees old internal rep.  Allocates memory for new internal rep.
+ *	Frees old internal rep. Allocates memory for new internal rep.
  *
  *----------------------------------------------------------------------
  */
 
 unsigned char *
-Tcl_GetByteArrayFromObj(objPtr, lengthPtr)
-    Tcl_Obj *objPtr;		/* The ByteArray object. */
-    int *lengthPtr;		/* If non-NULL, filled with length of the
+Tcl_GetByteArrayFromObj(
+    Tcl_Obj *objPtr,		/* The ByteArray object. */
+    int *lengthPtr)		/* If non-NULL, filled with length of the
 				 * array of bytes in the ByteArray object. */
 {
     ByteArray *baPtr;
-    
-    SetByteArrayFromAny(NULL, objPtr);
+
+    if (objPtr->typePtr != &tclByteArrayType) {
+	SetByteArrayFromAny(NULL, objPtr);
+    }
     baPtr = GET_BYTEARRAY(objPtr);
 
     if (lengthPtr != NULL) {
@@ -322,32 +329,32 @@ Tcl_GetByteArrayFromObj(objPtr, lengthPtr)
  *
  * Tcl_SetByteArrayLength --
  *
- *	This procedure changes the length of the byte array for this
- *	object.  Once the caller has set the length of the array, it
- *	is acceptable to directly modify the bytes in the array up until
- *	Tcl_GetStringFromObj() has been called on this object.
+ *	This procedure changes the length of the byte array for this object.
+ *	Once the caller has set the length of the array, it is acceptable to
+ *	directly modify the bytes in the array up until Tcl_GetStringFromObj()
+ *	has been called on this object.
  *
  * Results:
  *	The new byte array of the specified length.
  *
  * Side effects:
- *	Allocates enough memory for an array of bytes of the requested
- *	size.  When growing the array, the old array is copied to the
- *	new array; new bytes are undefined.  When shrinking, the
- *	old array is truncated to the specified length.
+ *	Allocates enough memory for an array of bytes of the requested size.
+ *	When growing the array, the old array is copied to the new array; new
+ *	bytes are undefined. When shrinking, the old array is truncated to the
+ *	specified length.
  *
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 unsigned char *
-Tcl_SetByteArrayLength(objPtr, length)
-    Tcl_Obj *objPtr;		/* The ByteArray object. */
-    int length;			/* New length for internal byte array. */
+Tcl_SetByteArrayLength(
+    Tcl_Obj *objPtr,		/* The ByteArray object. */
+    int length)			/* New length for internal byte array. */
 {
-    ByteArray *byteArrayPtr, *newByteArrayPtr;
-    
+    ByteArray *byteArrayPtr;
+
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetObjLength called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetByteArrayLength");
     }
     if (objPtr->typePtr != &tclByteArrayType) {
 	SetByteArrayFromAny(NULL, objPtr);
@@ -355,22 +362,18 @@ Tcl_SetByteArrayLength(objPtr, length)
 
     byteArrayPtr = GET_BYTEARRAY(objPtr);
     if (length > byteArrayPtr->allocated) {
-	newByteArrayPtr = (ByteArray *) ckalloc(BYTEARRAY_SIZE(length));
-	newByteArrayPtr->used = length;
-	newByteArrayPtr->allocated = length;
-	memcpy((VOID *) newByteArrayPtr->bytes,
-		(VOID *) byteArrayPtr->bytes, (size_t) byteArrayPtr->used);
-	ckfree((char *) byteArrayPtr);
-	byteArrayPtr = newByteArrayPtr;
+	byteArrayPtr = (ByteArray *) ckrealloc(
+		(char *) byteArrayPtr, BYTEARRAY_SIZE(length));
+	byteArrayPtr->allocated = length;
 	SET_BYTEARRAY(objPtr, byteArrayPtr);
     }
-    Tcl_InvalidateStringRep(objPtr);
+    TclInvalidateStringRep(objPtr);
     byteArrayPtr->used = length;
     return byteArrayPtr->bytes;
 }
 
 /*
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
  * SetByteArrayFromAny --
  *
@@ -382,24 +385,22 @@ Tcl_SetByteArrayLength(objPtr, length)
  * Side effects:
  *	A ByteArray object is stored as the internal rep of objPtr.
  *
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 static int
-SetByteArrayFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Not used. */
-    Tcl_Obj *objPtr;		/* The object to convert to type ByteArray. */
+SetByteArrayFromAny(
+    Tcl_Interp *interp,		/* Not used. */
+    Tcl_Obj *objPtr)		/* The object to convert to type ByteArray. */
 {
-    Tcl_ObjType *typePtr;
     int length;
     char *src, *srcEnd;
     unsigned char *dst;
     ByteArray *byteArrayPtr;
     Tcl_UniChar ch;
-    
-    typePtr = objPtr->typePtr;
-    if (typePtr != &tclByteArrayType) {
-	src = Tcl_GetStringFromObj(objPtr, &length);
+
+    if (objPtr->typePtr != &tclByteArrayType) {
+	src = TclGetStringFromObj(objPtr, &length);
 	srcEnd = src + length;
 
 	byteArrayPtr = (ByteArray *) ckalloc(BYTEARRAY_SIZE(length));
@@ -411,9 +412,7 @@ SetByteArrayFromAny(interp, objPtr)
 	byteArrayPtr->used = dst - byteArrayPtr->bytes;
 	byteArrayPtr->allocated = length;
 
-	if ((typePtr != NULL) && (typePtr->freeIntRepProc) != NULL) {
-	    (*typePtr->freeIntRepProc)(objPtr);
-	}
+	TclFreeIntRep(objPtr);
 	objPtr->typePtr = &tclByteArrayType;
 	SET_BYTEARRAY(objPtr, byteArrayPtr);
     }
@@ -432,26 +431,26 @@ SetByteArrayFromAny(interp, objPtr)
  *	None.
  *
  * Side effects:
- *	Frees memory. 
+ *	Frees memory.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeByteArrayInternalRep(objPtr)
-    Tcl_Obj *objPtr;		/* Object with internal rep to free. */
+FreeByteArrayInternalRep(
+    Tcl_Obj *objPtr)		/* Object with internal rep to free. */
 {
     ckfree((char *) GET_BYTEARRAY(objPtr));
+    objPtr->typePtr = NULL;
 }
 
 /*
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
  * DupByteArrayInternalRep --
  *
- *	Initialize the internal representation of a ByteArray Tcl_Obj
- *	to a copy of the internal representation of an existing ByteArray
- *	object. 
+ *	Initialize the internal representation of a ByteArray Tcl_Obj to a
+ *	copy of the internal representation of an existing ByteArray object.
  *
  * Results:
  *	None.
@@ -459,16 +458,16 @@ FreeByteArrayInternalRep(objPtr)
  * Side effects:
  *	Allocates memory.
  *
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 static void
-DupByteArrayInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;		/* Object with internal rep to copy. */
-    Tcl_Obj *copyPtr;		/* Object with internal rep to set. */
+DupByteArrayInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    Tcl_Obj *copyPtr)		/* Object with internal rep to set. */
 {
     int length;
-    ByteArray *srcArrayPtr, *copyArrayPtr;    
+    ByteArray *srcArrayPtr, *copyArrayPtr;
 
     srcArrayPtr = GET_BYTEARRAY(srcPtr);
     length = srcArrayPtr->used;
@@ -476,38 +475,37 @@ DupByteArrayInternalRep(srcPtr, copyPtr)
     copyArrayPtr = (ByteArray *) ckalloc(BYTEARRAY_SIZE(length));
     copyArrayPtr->used = length;
     copyArrayPtr->allocated = length;
-    memcpy((VOID *) copyArrayPtr->bytes, (VOID *) srcArrayPtr->bytes,
-	    (size_t) length);
+    memcpy(copyArrayPtr->bytes, srcArrayPtr->bytes, (size_t) length);
     SET_BYTEARRAY(copyPtr, copyArrayPtr);
 
     copyPtr->typePtr = &tclByteArrayType;
 }
 
 /*
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
  * UpdateStringOfByteArray --
  *
- *	Update the string representation for a ByteArray data object.
- *	Note: This procedure does not invalidate an existing old string rep
- *	so storage will be lost if this has not already been done. 
+ *	Update the string representation for a ByteArray data object. Note:
+ *	This procedure does not invalidate an existing old string rep so
+ *	storage will be lost if this has not already been done.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The object's string is set to a valid string that results from
- *	the ByteArray-to-string conversion.
+ *	The object's string is set to a valid string that results from the
+ *	ByteArray-to-string conversion.
  *
- *	The object becomes a string object -- the internal rep is
- *	discarded and the typePtr becomes NULL.
+ *	The object becomes a string object -- the internal rep is discarded
+ *	and the typePtr becomes NULL.
  *
- *---------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfByteArray(objPtr)
-    Tcl_Obj *objPtr;		/* ByteArray object whose string rep to
+UpdateStringOfByteArray(
+    Tcl_Obj *objPtr)		/* ByteArray object whose string rep to
 				 * update. */
 {
     int i, length, size;
@@ -522,20 +520,23 @@ UpdateStringOfByteArray(objPtr)
     /*
      * How much space will string rep need?
      */
-     
+
     size = length;
-    for (i = 0; i < length; i++) {
+    for (i = 0; i < length && size >= 0; i++) {
 	if ((src[i] == 0) || (src[i] > 127)) {
 	    size++;
 	}
     }
+    if (size < 0) {
+	Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+    }
 
     dst = (char *) ckalloc((unsigned) (size + 1));
     objPtr->bytes = dst;
     objPtr->length = size;
 
     if (size == length) {
-	memcpy((VOID *) dst, (VOID *) src, (size_t) size);
+	memcpy(dst, src, (size_t) size);
 	dst[size] = '\0';
     } else {
 	for (i = 0; i < length; i++) {
@@ -562,11 +563,11 @@ UpdateStringOfByteArray(objPtr)
  */
 
 int
-Tcl_BinaryObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_BinaryObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int arg;			/* Index of next argument to consume. */
     int value = 0;		/* Current integer value to be packed.
@@ -574,19 +575,21 @@ Tcl_BinaryObjCmd(dummy, interp, objc, objv)
     char cmd;			/* Current format character. */
     int count;			/* Count associated with current format
 				 * character. */
+    int flags;			/* Format field flags */
     char *format;		/* Pointer to current position in format
 				 * string. */
-    Tcl_Obj *resultPtr;		/* Object holding result buffer. */
+    Tcl_Obj *resultPtr = NULL;	/* Object holding result buffer. */
     unsigned char *buffer;	/* Start of result buffer. */
     unsigned char *cursor;	/* Current position within result buffer. */
     unsigned char *maxPos;	/* Greatest position within result buffer that
 				 * cursor has visited.*/
-    char *errorString, *errorValue, *str;
+    const char *errorString;
+    char *errorValue, *str;
     int offset, size, length, index;
-    static CONST char *options[] = { 
-	"format",	"scan",		NULL 
+    static const char *options[] = {
+	"format",	"scan",		NULL
     };
-    enum options { 
+    enum options {
 	BINARY_FORMAT,	BINARY_SCAN
     };
 
@@ -601,760 +604,765 @@ Tcl_BinaryObjCmd(dummy, interp, objc, objv)
     }
 
     switch ((enum options) index) {
-	case BINARY_FORMAT: {
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "formatString ?arg arg ...?");
-		return TCL_ERROR;
-	    }
+    case BINARY_FORMAT:
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "formatString ?arg arg ...?");
+	    return TCL_ERROR;
+	}
 
-	    /*
-	     * To avoid copying the data, we format the string in two passes.
-	     * The first pass computes the size of the output buffer.  The
-	     * second pass places the formatted data into the buffer.
-	     */
+	/*
+	 * To avoid copying the data, we format the string in two passes. The
+	 * first pass computes the size of the output buffer. The second pass
+	 * places the formatted data into the buffer.
+	 */
 
-	    format = Tcl_GetString(objv[2]);
-	    arg = 3;
-	    offset = 0;
-	    length = 0;
-	    while (*format != '\0') {
-		str = format;
-		if (!GetFormatSpec(&format, &cmd, &count)) {
-		    break;
+	format = TclGetString(objv[2]);
+	arg = 3;
+	offset = 0;
+	length = 0;
+	while (*format != '\0') {
+	    str = format;
+	    flags = 0;
+	    if (!GetFormatSpec(&format, &cmd, &count, &flags)) {
+		break;
+	    }
+	    switch (cmd) {
+	    case 'a':
+	    case 'A':
+	    case 'b':
+	    case 'B':
+	    case 'h':
+	    case 'H':
+		/*
+		 * For string-type specifiers, the count corresponds to the
+		 * number of bytes in a single argument.
+		 */
+
+		if (arg >= objc) {
+		    goto badIndex;
+		}
+		if (count == BINARY_ALL) {
+		    Tcl_GetByteArrayFromObj(objv[arg], &count);
+		} else if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		arg++;
+		if (cmd == 'a' || cmd == 'A') {
+		    offset += count;
+		} else if (cmd == 'b' || cmd == 'B') {
+		    offset += (count + 7) / 8;
+		} else {
+		    offset += (count + 1) / 2;
+		}
+		break;
+	    case 'c':
+		size = 1;
+		goto doNumbers;
+	    case 't':
+	    case 's':
+	    case 'S':
+		size = 2;
+		goto doNumbers;
+	    case 'n':
+	    case 'i':
+	    case 'I':
+		size = 4;
+		goto doNumbers;
+	    case 'm':
+	    case 'w':
+	    case 'W':
+		size = 8;
+		goto doNumbers;
+	    case 'r':
+	    case 'R':
+	    case 'f':
+		size = sizeof(float);
+		goto doNumbers;
+	    case 'q':
+	    case 'Q':
+	    case 'd':
+		size = sizeof(double);
+
+	    doNumbers:
+		if (arg >= objc) {
+		    goto badIndex;
 		}
-		switch (cmd) {
-		    case 'a':
-		    case 'A':
-		    case 'b':
-		    case 'B':
-		    case 'h':
-		    case 'H': {
-			/*
-			 * For string-type specifiers, the count corresponds
-			 * to the number of bytes in a single argument.
-			 */
-
-			if (arg >= objc) {
-			    goto badIndex;
-			}
-			if (count == BINARY_ALL) {
-			    Tcl_GetByteArrayFromObj(objv[arg], &count);
-			} else if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			arg++;
-			if (cmd == 'a' || cmd == 'A') {
-			    offset += count;
-			} else if (cmd == 'b' || cmd == 'B') {
-			    offset += (count + 7) / 8;
-			} else {
-			    offset += (count + 1) / 2;
-			}
-			break;
-		    }
-		    case 'c': {
-			size = 1;
-			goto doNumbers;
-		    }
-		    case 's':
-		    case 'S': {
-			size = 2;
-			goto doNumbers;
-		    }
-		    case 'i':
-		    case 'I': {
-			size = 4;
-			goto doNumbers;
-		    }
-		    case 'w':
-		    case 'W': {
-			size = 8;
-			goto doNumbers;
-		    }
-		    case 'f': {
-			size = sizeof(float);
-			goto doNumbers;
-		    }
-		    case 'd': {
-			size = sizeof(double);
-			
-			doNumbers:
-			if (arg >= objc) {
-			    goto badIndex;
-			}
 
-			/*
-			 * For number-type specifiers, the count corresponds
-			 * to the number of elements in the list stored in
-			 * a single argument.  If no count is specified, then
-			 * the argument is taken as a single non-list value.
-			 */
+		/*
+		 * For number-type specifiers, the count corresponds to the
+		 * number of elements in the list stored in a single argument.
+		 * If no count is specified, then the argument is taken as a
+		 * single non-list value.
+		 */
 
-			if (count == BINARY_NOCOUNT) {
-			    arg++;
-			    count = 1;
-			} else {
-			    int listc;
-			    Tcl_Obj **listv;
-			    if (Tcl_ListObjGetElements(interp, objv[arg++],
-				    &listc, &listv) != TCL_OK) {
-				return TCL_ERROR;
-			    }
-			    if (count == BINARY_ALL) {
-				count = listc;
-			    } else if (count > listc) {
-			        Tcl_AppendResult(interp, 
-					"number of elements in list does not match count",
-					(char *) NULL);
-				return TCL_ERROR;
-			    }
-			}
-			offset += count*size;
-			break;
-		    }
-		    case 'x': {
-			if (count == BINARY_ALL) {
-			    Tcl_AppendResult(interp, 
-				    "cannot use \"*\" in format string with \"x\"",
-				    (char *) NULL);
-			    return TCL_ERROR;
-			} else if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			offset += count;
-			break;
-		    }
-		    case 'X': {
-			if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			if ((count > offset) || (count == BINARY_ALL)) {
-			    count = offset;
-			}
-			if (offset > length) {
-			    length = offset;
-			}
-			offset -= count;
-			break;
-		    }
-		    case '@': {
-			if (offset > length) {
-			    length = offset;
-			}
-			if (count == BINARY_ALL) {
-			    offset = length;
-			} else if (count == BINARY_NOCOUNT) {
-			    goto badCount;
-			} else {
-			    offset = count;
-			}
-			break;
+		if (count == BINARY_NOCOUNT) {
+		    arg++;
+		    count = 1;
+		} else {
+		    int listc;
+		    Tcl_Obj **listv;
+
+		    /* The macro evals its args more than once: avoid arg++ */		    
+		    if (TclListObjGetElements(interp, objv[arg], &listc,
+			    &listv) != TCL_OK) {
+			return TCL_ERROR;
 		    }
-		    default: {
-			errorString = str;
-			goto badField;
+		    arg++;
+		    
+		    if (count == BINARY_ALL) {
+			count = listc;
+		    } else if (count > listc) {
+			Tcl_AppendResult(interp,
+				"number of elements in list does not match count",
+				NULL);
+			return TCL_ERROR;
 		    }
 		}
+		offset += count*size;
+		break;
+
+	    case 'x':
+		if (count == BINARY_ALL) {
+		    Tcl_AppendResult(interp,
+			    "cannot use \"*\" in format string with \"x\"",
+			    NULL);
+		    return TCL_ERROR;
+		} else if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		offset += count;
+		break;
+	    case 'X':
+		if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		if ((count > offset) || (count == BINARY_ALL)) {
+		    count = offset;
+		}
+		if (offset > length) {
+		    length = offset;
+		}
+		offset -= count;
+		break;
+	    case '@':
+		if (offset > length) {
+		    length = offset;
+		}
+		if (count == BINARY_ALL) {
+		    offset = length;
+		} else if (count == BINARY_NOCOUNT) {
+		    goto badCount;
+		} else {
+		    offset = count;
+		}
+		break;
+	    default:
+		errorString = str;
+		goto badField;
 	    }
-	    if (offset > length) {
-		length = offset;
-	    }
-	    if (length == 0) {
-		return TCL_OK;
-	    }
+	}
+	if (offset > length) {
+	    length = offset;
+	}
+	if (length == 0) {
+	    return TCL_OK;
+	}
 
-	    /*
-	     * Prepare the result object by preallocating the caclulated
-	     * number of bytes and filling with nulls.
-	     */
+	/*
+	 * Prepare the result object by preallocating the caclulated number of
+	 * bytes and filling with nulls.
+	 */
 
-	    resultPtr = Tcl_GetObjResult(interp);
-	    if (Tcl_IsShared(resultPtr)) {
-		TclNewObj(resultPtr);
-		Tcl_SetObjResult(interp, resultPtr);
-	    }
-	    buffer = Tcl_SetByteArrayLength(resultPtr, length);
-	    memset((VOID *) buffer, 0, (size_t) length);
+	resultPtr = Tcl_NewObj();
+	buffer = Tcl_SetByteArrayLength(resultPtr, length);
+	memset(buffer, 0, (size_t) length);
 
-	    /*
-	     * Pack the data into the result object.  Note that we can skip
-	     * the error checking during this pass, since we have already
-	     * parsed the string once.
-	     */
+	/*
+	 * Pack the data into the result object. Note that we can skip the
+	 * error checking during this pass, since we have already parsed the
+	 * string once.
+	 */
 
-	    arg = 3;
-	    format = Tcl_GetString(objv[2]);
-	    cursor = buffer;
-	    maxPos = cursor;
-	    while (*format != 0) {
-		if (!GetFormatSpec(&format, &cmd, &count)) {
-		    break;
+	arg = 3;
+	format = TclGetString(objv[2]);
+	cursor = buffer;
+	maxPos = cursor;
+	while (*format != 0) {
+	    flags = 0;
+	    if (!GetFormatSpec(&format, &cmd, &count, &flags)) {
+		break;
+	    }
+	    if ((count == 0) && (cmd != '@')) {
+		if (cmd != 'x') {
+		    arg++;
 		}
-		if ((count == 0) && (cmd != '@')) {
-		    if (cmd != 'x') {
-			arg++;
-		    }
-		    continue;
+		continue;
+	    }
+	    switch (cmd) {
+	    case 'a':
+	    case 'A': {
+		char pad = (char) (cmd == 'a' ? '\0' : ' ');
+		unsigned char *bytes;
+
+		bytes = Tcl_GetByteArrayFromObj(objv[arg++], &length);
+
+		if (count == BINARY_ALL) {
+		    count = length;
+		} else if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		if (length >= count) {
+		    memcpy(cursor, bytes, (size_t) count);
+		} else {
+		    memcpy(cursor, bytes, (size_t) length);
+		    memset(cursor + length, pad, (size_t) (count - length));
 		}
-		switch (cmd) {
-		    case 'a':
-		    case 'A': {
-			char pad = (char) (cmd == 'a' ? '\0' : ' ');
-			unsigned char *bytes;
-
-			bytes = Tcl_GetByteArrayFromObj(objv[arg++], &length);
-
-			if (count == BINARY_ALL) {
-			    count = length;
-			} else if (count == BINARY_NOCOUNT) {
-			    count = 1;
+		cursor += count;
+		break;
+	    }
+	    case 'b':
+	    case 'B': {
+		unsigned char *last;
+
+		str = TclGetStringFromObj(objv[arg], &length);
+		arg++;
+		if (count == BINARY_ALL) {
+		    count = length;
+		} else if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		last = cursor + ((count + 7) / 8);
+		if (count > length) {
+		    count = length;
+		}
+		value = 0;
+		errorString = "binary";
+		if (cmd == 'B') {
+		    for (offset = 0; offset < count; offset++) {
+			value <<= 1;
+			if (str[offset] == '1') {
+			    value |= 1;
+			} else if (str[offset] != '0') {
+			    errorValue = str;
+			    Tcl_DecrRefCount(resultPtr);
+			    goto badValue;
 			}
-			if (length >= count) {
-			    memcpy((VOID *) cursor, (VOID *) bytes,
-				    (size_t) count);
-			} else {
-			    memcpy((VOID *) cursor, (VOID *) bytes,
-				    (size_t) length);
-			    memset((VOID *) (cursor + length), pad,
-			            (size_t) (count - length));
+			if (((offset + 1) % 8) == 0) {
+			    *cursor++ = (unsigned char) value;
+			    value = 0;
 			}
-			cursor += count;
-			break;
 		    }
-		    case 'b':
-		    case 'B': {
-			unsigned char *last;
-			
-			str = Tcl_GetStringFromObj(objv[arg++], &length);
-			if (count == BINARY_ALL) {
-			    count = length;
-			} else if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			last = cursor + ((count + 7) / 8);
-			if (count > length) {
-			    count = length;
-			}
-			value = 0;
-			errorString = "binary";
-			if (cmd == 'B') {
-			    for (offset = 0; offset < count; offset++) {
-				value <<= 1;
-				if (str[offset] == '1') {
-				    value |= 1;
-				} else if (str[offset] != '0') {
-				    errorValue = str;
-				    goto badValue;
-				}
-				if (((offset + 1) % 8) == 0) {
-				    *cursor++ = (unsigned char) value;
-				    value = 0;
-				}
-			    }
-			} else {
-			    for (offset = 0; offset < count; offset++) {
-				value >>= 1;
-				if (str[offset] == '1') {
-				    value |= 128;
-				} else if (str[offset] != '0') {
-				    errorValue = str;
-				    goto badValue;
-				}
-				if (!((offset + 1) % 8)) {
-				    *cursor++ = (unsigned char) value;
-				    value = 0;
-				}
-			    }
+		} else {
+		    for (offset = 0; offset < count; offset++) {
+			value >>= 1;
+			if (str[offset] == '1') {
+			    value |= 128;
+			} else if (str[offset] != '0') {
+			    errorValue = str;
+			    Tcl_DecrRefCount(resultPtr);
+			    goto badValue;
 			}
-			if ((offset % 8) != 0) {
-			    if (cmd == 'B') {
-				value <<= 8 - (offset % 8);
-			    } else {
-				value >>= 8 - (offset % 8);
-			    }
+			if (!((offset + 1) % 8)) {
 			    *cursor++ = (unsigned char) value;
+			    value = 0;
 			}
-			while (cursor < last) {
-			    *cursor++ = '\0';
-			}
-			break;
 		    }
-		    case 'h':
-		    case 'H': {
-			unsigned char *last;
-			int c;
-			
-			str = Tcl_GetStringFromObj(objv[arg++], &length);
-			if (count == BINARY_ALL) {
-			    count = length;
-			} else if (count == BINARY_NOCOUNT) {
-			    count = 1;
+		}
+		if ((offset % 8) != 0) {
+		    if (cmd == 'B') {
+			value <<= 8 - (offset % 8);
+		    } else {
+			value >>= 8 - (offset % 8);
+		    }
+		    *cursor++ = (unsigned char) value;
+		}
+		while (cursor < last) {
+		    *cursor++ = '\0';
+		}
+		break;
+	    }
+	    case 'h':
+	    case 'H': {
+		unsigned char *last;
+		int c;
+
+		str = TclGetStringFromObj(objv[arg], &length);
+		arg++;
+		if (count == BINARY_ALL) {
+		    count = length;
+		} else if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		last = cursor + ((count + 1) / 2);
+		if (count > length) {
+		    count = length;
+		}
+		value = 0;
+		errorString = "hexadecimal";
+		if (cmd == 'H') {
+		    for (offset = 0; offset < count; offset++) {
+			value <<= 4;
+			if (!isxdigit(UCHAR(str[offset]))) { /* INTL: digit */
+			    errorValue = str;
+			    Tcl_DecrRefCount(resultPtr);
+			    goto badValue;
 			}
-			last = cursor + ((count + 1) / 2);
-			if (count > length) {
-			    count = length;
+			c = str[offset] - '0';
+			if (c > 9) {
+			    c += ('0' - 'A') + 10;
 			}
-			value = 0;
-			errorString = "hexadecimal";
-			if (cmd == 'H') {
-			    for (offset = 0; offset < count; offset++) {
-				value <<= 4;
-				if (!isxdigit(UCHAR(str[offset]))) { /* INTL: digit */
-				    errorValue = str;
-				    goto badValue;
-				}
-				c = str[offset] - '0';
-				if (c > 9) {
-				    c += ('0' - 'A') + 10;
-				}
-				if (c > 16) {
-				    c += ('A' - 'a');
-				}
-				value |= (c & 0xf);
-				if (offset % 2) {
-				    *cursor++ = (char) value;
-				    value = 0;
-				}
-			    }
-			} else {
-			    for (offset = 0; offset < count; offset++) {
-				value >>= 4;
-
-				if (!isxdigit(UCHAR(str[offset]))) { /* INTL: digit */
-				    errorValue = str;
-				    goto badValue;
-				}
-				c = str[offset] - '0';
-				if (c > 9) {
-				    c += ('0' - 'A') + 10;
-				}
-				if (c > 16) {
-				    c += ('A' - 'a');
-				}
-				value |= ((c << 4) & 0xf0);
-				if (offset % 2) {
-				    *cursor++ = (unsigned char)(value & 0xff);
-				    value = 0;
-				}
-			    }
+			if (c > 16) {
+			    c += ('A' - 'a');
 			}
+			value |= (c & 0xf);
 			if (offset % 2) {
-			    if (cmd == 'H') {
-				value <<= 4;
-			    } else {
-				value >>= 4;
-			    }
-			    *cursor++ = (unsigned char) value;
+			    *cursor++ = (char) value;
+			    value = 0;
 			}
+		    }
+		} else {
+		    for (offset = 0; offset < count; offset++) {
+			value >>= 4;
 
-			while (cursor < last) {
-			    *cursor++ = '\0';
+			if (!isxdigit(UCHAR(str[offset]))) { /* INTL: digit */
+			    errorValue = str;
+			    Tcl_DecrRefCount(resultPtr);
+			    goto badValue;
 			}
-			break;
-		    }
-		    case 'c':
-		    case 's':
-		    case 'S':
-		    case 'i':
-		    case 'I':
-		    case 'w':
-		    case 'W':
-		    case 'd':
-		    case 'f': {
-			int listc, i;
-			Tcl_Obj **listv;
-
-			if (count == BINARY_NOCOUNT) {
-			    /*
-			     * Note that we are casting away the const-ness of
-			     * objv, but this is safe since we aren't going to
-			     * modify the array.
-			     */
-
-			    listv = (Tcl_Obj**)(objv + arg);
-			    listc = 1;
-			    count = 1;
-			} else {
-			    Tcl_ListObjGetElements(interp, objv[arg],
-				    &listc, &listv);
-			    if (count == BINARY_ALL) {
-				count = listc;
-			    }
+			c = str[offset] - '0';
+			if (c > 9) {
+			    c += ('0' - 'A') + 10;
 			}
-			arg++;
-			for (i = 0; i < count; i++) {
-			    if (FormatNumber(interp, cmd, listv[i], &cursor)
-				    != TCL_OK) {
-				return TCL_ERROR;
-			    }
+			if (c > 16) {
+			    c += ('A' - 'a');
 			}
-			break;
-		    }
-		    case 'x': {
-			if (count == BINARY_NOCOUNT) {
-			    count = 1;
+			value |= ((c << 4) & 0xf0);
+			if (offset % 2) {
+			    *cursor++ = (unsigned char)(value & 0xff);
+			    value = 0;
 			}
-			memset(cursor, 0, (size_t) count);
-			cursor += count;
-			break;
 		    }
-		    case 'X': {
-			if (cursor > maxPos) {
-			    maxPos = cursor;
-			}
-			if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			if ((count == BINARY_ALL)
-				|| (count > (cursor - buffer))) {
-			    cursor = buffer;
-			} else {
-			    cursor -= count;
-			}
-			break;
+		}
+		if (offset % 2) {
+		    if (cmd == 'H') {
+			value <<= 4;
+		    } else {
+			value >>= 4;
 		    }
-		    case '@': {
-			if (cursor > maxPos) {
-			    maxPos = cursor;
-			}
-			if (count == BINARY_ALL) {
-			    cursor = maxPos;
-			} else {
-			    cursor = buffer + count;
-			}
-			break;
+		    *cursor++ = (unsigned char) value;
+		}
+
+		while (cursor < last) {
+		    *cursor++ = '\0';
+		}
+		break;
+	    }
+	    case 'c':
+	    case 't':
+	    case 's':
+	    case 'S':
+	    case 'n':
+	    case 'i':
+	    case 'I':
+	    case 'm':
+	    case 'w':
+	    case 'W':
+	    case 'r':
+	    case 'R':
+	    case 'd':
+	    case 'q':
+	    case 'Q':
+	    case 'f': {
+		int listc, i;
+		Tcl_Obj **listv;
+
+		if (count == BINARY_NOCOUNT) {
+		    /*
+		     * Note that we are casting away the const-ness of objv,
+		     * but this is safe since we aren't going to modify the
+		     * array.
+		     */
+
+		    listv = (Tcl_Obj**)(objv + arg);
+		    listc = 1;
+		    count = 1;
+		} else {
+		    TclListObjGetElements(interp, objv[arg], &listc, &listv);
+		    if (count == BINARY_ALL) {
+			count = listc;
 		    }
 		}
+		arg++;
+		for (i = 0; i < count; i++) {
+		    if (FormatNumber(interp, cmd, listv[i], &cursor)!=TCL_OK) {
+			Tcl_DecrRefCount(resultPtr);
+			return TCL_ERROR;
+		    }
+		}
+		break;
+	    }
+	    case 'x':
+		if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		memset(cursor, 0, (size_t) count);
+		cursor += count;
+		break;
+	    case 'X':
+		if (cursor > maxPos) {
+		    maxPos = cursor;
+		}
+		if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		if ((count == BINARY_ALL) || (count > (cursor - buffer))) {
+		    cursor = buffer;
+		} else {
+		    cursor -= count;
+		}
+		break;
+	    case '@':
+		if (cursor > maxPos) {
+		    maxPos = cursor;
+		}
+		if (count == BINARY_ALL) {
+		    cursor = maxPos;
+		} else {
+		    cursor = buffer + count;
+		}
+		break;
 	    }
-	    break;
 	}
-	case BINARY_SCAN: {
-	    int i;
-	    Tcl_Obj *valuePtr, *elementPtr;
-	    Tcl_HashTable numberCacheHash;
-	    Tcl_HashTable *numberCachePtr;
-
-	    if (objc < 4) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"value formatString ?varName varName ...?");
-		return TCL_ERROR;
+	Tcl_SetObjResult(interp, resultPtr);
+	break;
+    case BINARY_SCAN: {
+	int i;
+	Tcl_Obj *valuePtr, *elementPtr;
+	Tcl_HashTable numberCacheHash;
+	Tcl_HashTable *numberCachePtr;
+
+	if (objc < 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv,
+		    "value formatString ?varName varName ...?");
+	    return TCL_ERROR;
+	}
+	numberCachePtr = &numberCacheHash;
+	Tcl_InitHashTable(numberCachePtr, TCL_ONE_WORD_KEYS);
+	buffer = Tcl_GetByteArrayFromObj(objv[2], &length);
+	format = TclGetString(objv[3]);
+	cursor = buffer;
+	arg = 4;
+	offset = 0;
+	while (*format != '\0') {
+	    str = format;
+	    flags = 0;
+	    if (!GetFormatSpec(&format, &cmd, &count, &flags)) {
+		goto done;
 	    }
-	    numberCachePtr = &numberCacheHash;
-	    Tcl_InitHashTable(numberCachePtr, TCL_ONE_WORD_KEYS);
-	    buffer = Tcl_GetByteArrayFromObj(objv[2], &length);
-	    format = Tcl_GetString(objv[3]);
-	    cursor = buffer;
-	    arg = 4;
-	    offset = 0;
-	    while (*format != '\0') {
-		str = format;
-		if (!GetFormatSpec(&format, &cmd, &count)) {
-		    goto done;
+	    switch (cmd) {
+	    case 'a':
+	    case 'A': {
+		unsigned char *src;
+
+		if (arg >= objc) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    goto badIndex;
+		}
+		if (count == BINARY_ALL) {
+		    count = length - offset;
+		} else {
+		    if (count == BINARY_NOCOUNT) {
+			count = 1;
+		    }
+		    if (count > (length - offset)) {
+			goto done;
+		    }
 		}
-		switch (cmd) {
-		    case 'a':
-		    case 'A': {
-			unsigned char *src;
-
-			if (arg >= objc) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    goto badIndex;
-			}
-			if (count == BINARY_ALL) {
-			    count = length - offset;
-			} else {
-			    if (count == BINARY_NOCOUNT) {
-				count = 1;
-			    }
-			    if (count > (length - offset)) {
-				goto done;
-			    }
-			}
 
-			src = buffer + offset;
-			size = count;
+		src = buffer + offset;
+		size = count;
 
-			/*
-			 * Trim trailing nulls and spaces, if necessary.
-			 */
+		/*
+		 * Trim trailing nulls and spaces, if necessary.
+		 */
 
-			if (cmd == 'A') {
-			    while (size > 0) {
-				if (src[size-1] != '\0' && src[size-1] != ' ') {
-				    break;
-				}
-				size--;
-			    }
+		if (cmd == 'A') {
+		    while (size > 0) {
+			if (src[size-1] != '\0' && src[size-1] != ' ') {
+			    break;
 			}
-			valuePtr = Tcl_NewByteArrayObj(src, size);
-			Tcl_IncrRefCount(valuePtr);
-			resultPtr = Tcl_ObjSetVar2(interp, objv[arg],
-				NULL, valuePtr, TCL_LEAVE_ERR_MSG);
-			Tcl_DecrRefCount(valuePtr);
-			arg++;
-			if (resultPtr == NULL) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    return TCL_ERROR;
-			}
-			offset += count;
-			break;
+			size--;
 		    }
-		    case 'b':
-		    case 'B': {
-			unsigned char *src;
-			char *dest;
-
-			if (arg >= objc) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    goto badIndex;
-			}
-			if (count == BINARY_ALL) {
-			    count = (length - offset) * 8;
-			} else {
-			    if (count == BINARY_NOCOUNT) {
-				count = 1;
-			    }
-			    if (count > (length - offset) * 8) {
-				goto done;
-			    }
-			}
-			src = buffer + offset;
-			valuePtr = Tcl_NewObj();
-			Tcl_SetObjLength(valuePtr, count);
-			dest = Tcl_GetString(valuePtr);
-
-			if (cmd == 'b') {
-			    for (i = 0; i < count; i++) {
-				if (i % 8) {
-				    value >>= 1;
-				} else {
-				    value = *src++;
-				}
-				*dest++ = (char) ((value & 1) ? '1' : '0');
-			    }
-			} else {
-			    for (i = 0; i < count; i++) {
-				if (i % 8) {
-				    value <<= 1;
-				} else {
-				    value = *src++;
-				}
-				*dest++ = (char) ((value & 0x80) ? '1' : '0');
-			    }
-			}
+		}
 
-			Tcl_IncrRefCount(valuePtr);			
-			resultPtr = Tcl_ObjSetVar2(interp, objv[arg],
-				NULL, valuePtr, TCL_LEAVE_ERR_MSG);
-			Tcl_DecrRefCount(valuePtr);
-			arg++;
-			if (resultPtr == NULL) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    return TCL_ERROR;
-			}
-			offset += (count + 7 ) / 8;
-			break;
+		/*
+		 * Have to do this #ifdef-fery because (as part of defining
+		 * Tcl_NewByteArrayObj) we removed the #def that hides this
+		 * stuff normally. If this code ever gets copied to another
+		 * file, it should be changed back to the simpler version.
+		 */
+
+#ifdef TCL_MEM_DEBUG
+		valuePtr = Tcl_DbNewByteArrayObj(src, size, __FILE__,__LINE__);
+#else
+		valuePtr = Tcl_NewByteArrayObj(src, size);
+#endif /* TCL_MEM_DEBUG */
+
+		resultPtr = Tcl_ObjSetVar2(interp, objv[arg], NULL, valuePtr,
+			TCL_LEAVE_ERR_MSG);
+		arg++;
+		if (resultPtr == NULL) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    return TCL_ERROR;
+		}
+		offset += count;
+		break;
+	    }
+	    case 'b':
+	    case 'B': {
+		unsigned char *src;
+		char *dest;
+
+		if (arg >= objc) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    goto badIndex;
+		}
+		if (count == BINARY_ALL) {
+		    count = (length - offset) * 8;
+		} else {
+		    if (count == BINARY_NOCOUNT) {
+			count = 1;
 		    }
-		    case 'h':
-		    case 'H': {
-			char *dest;
-			unsigned char *src;
-			int i;
-			static CONST char hexdigit[] = "0123456789abcdef";
-
-			if (arg >= objc) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    goto badIndex;
-			}
-			if (count == BINARY_ALL) {
-			    count = (length - offset)*2;
+		    if (count > (length - offset) * 8) {
+			goto done;
+		    }
+		}
+		src = buffer + offset;
+		valuePtr = Tcl_NewObj();
+		Tcl_SetObjLength(valuePtr, count);
+		dest = TclGetString(valuePtr);
+
+		if (cmd == 'b') {
+		    for (i = 0; i < count; i++) {
+			if (i % 8) {
+			    value >>= 1;
 			} else {
-			    if (count == BINARY_NOCOUNT) {
-				count = 1;
-			    }
-			    if (count > (length - offset)*2) {
-				goto done;
-			    }
+			    value = *src++;
 			}
-			src = buffer + offset;
-			valuePtr = Tcl_NewObj();
-			Tcl_SetObjLength(valuePtr, count);
-			dest = Tcl_GetString(valuePtr);
-
-			if (cmd == 'h') {
-			    for (i = 0; i < count; i++) {
-				if (i % 2) {
-				    value >>= 4;
-				} else {
-				    value = *src++;
-				}
-				*dest++ = hexdigit[value & 0xf];
-			    }
+			*dest++ = (char) ((value & 1) ? '1' : '0');
+		    }
+		} else {
+		    for (i = 0; i < count; i++) {
+			if (i % 8) {
+			    value <<= 1;
 			} else {
-			    for (i = 0; i < count; i++) {
-				if (i % 2) {
-				    value <<= 4;
-				} else {
-				    value = *src++;
-				}
-				*dest++ = hexdigit[(value >> 4) & 0xf];
-			    }
-			}
-			
-			Tcl_IncrRefCount(valuePtr);
-			resultPtr = Tcl_ObjSetVar2(interp, objv[arg],
-				NULL, valuePtr, TCL_LEAVE_ERR_MSG);
-			Tcl_DecrRefCount(valuePtr);
-			arg++;
-			if (resultPtr == NULL) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    return TCL_ERROR;
+			    value = *src++;
 			}
-			offset += (count + 1) / 2;
-			break;
-		    }
-		    case 'c': {
-			size = 1;
-			goto scanNumber;
+			*dest++ = (char) ((value & 0x80) ? '1' : '0');
 		    }
-		    case 's':
-		    case 'S': {
-			size = 2;
-			goto scanNumber;
-		    }
-		    case 'i':
-		    case 'I': {
-			size = 4;
-			goto scanNumber;
-		    }
-		    case 'w':
-		    case 'W': {
-			size = 8;
-			goto scanNumber;
+		}
+
+		resultPtr = Tcl_ObjSetVar2(interp, objv[arg], NULL, valuePtr,
+			TCL_LEAVE_ERR_MSG);
+		arg++;
+		if (resultPtr == NULL) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    return TCL_ERROR;
+		}
+		offset += (count + 7) / 8;
+		break;
+	    }
+	    case 'h':
+	    case 'H': {
+		char *dest;
+		unsigned char *src;
+		int i;
+		static const char hexdigit[] = "0123456789abcdef";
+
+		if (arg >= objc) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    goto badIndex;
+		}
+		if (count == BINARY_ALL) {
+		    count = (length - offset)*2;
+		} else {
+		    if (count == BINARY_NOCOUNT) {
+			count = 1;
 		    }
-		    case 'f': {
-			size = sizeof(float);
-			goto scanNumber;
+		    if (count > (length - offset)*2) {
+			goto done;
 		    }
-		    case 'd': {
-			unsigned char *src;
-
-			size = sizeof(double);
-			/* fall through */
-			
-			scanNumber:
-			if (arg >= objc) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    goto badIndex;
-			}
-			if (count == BINARY_NOCOUNT) {
-			    if ((length - offset) < size) {
-				goto done;
-			    }
-			    valuePtr = ScanNumber(buffer+offset, cmd,
-				    &numberCachePtr);
-			    offset += size;
+		}
+		src = buffer + offset;
+		valuePtr = Tcl_NewObj();
+		Tcl_SetObjLength(valuePtr, count);
+		dest = TclGetString(valuePtr);
+
+		if (cmd == 'h') {
+		    for (i = 0; i < count; i++) {
+			if (i % 2) {
+			    value >>= 4;
 			} else {
-			    if (count == BINARY_ALL) {
-				count = (length - offset) / size;
-			    }
-			    if ((length - offset) < (count * size)) {
-				goto done;
-			    }
-			    valuePtr = Tcl_NewObj();
-			    src = buffer+offset;
-			    for (i = 0; i < count; i++) {
-				elementPtr = ScanNumber(src, cmd,
-					&numberCachePtr);
-				src += size;
-				Tcl_ListObjAppendElement(NULL, valuePtr,
-					elementPtr);
-			    }
-			    offset += count*size;
+			    value = *src++;
 			}
-
-			Tcl_IncrRefCount(valuePtr); 
-			resultPtr = Tcl_ObjSetVar2(interp, objv[arg],
-				NULL, valuePtr, TCL_LEAVE_ERR_MSG);
-			Tcl_DecrRefCount(valuePtr);
-			arg++;
-			if (resultPtr == NULL) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    return TCL_ERROR;
-			}
-			break;
+			*dest++ = hexdigit[value & 0xf];
 		    }
-		    case 'x': {
-			if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			if ((count == BINARY_ALL)
-				|| (count > (length - offset))) {
-			    offset = length;
+		} else {
+		    for (i = 0; i < count; i++) {
+			if (i % 2) {
+			    value <<= 4;
 			} else {
-			    offset += count;
+			    value = *src++;
 			}
-			break;
+			*dest++ = hexdigit[(value >> 4) & 0xf];
 		    }
-		    case 'X': {
-			if (count == BINARY_NOCOUNT) {
-			    count = 1;
-			}
-			if ((count == BINARY_ALL) || (count > offset)) {
-			    offset = 0;
-			} else {
-			    offset -= count;
-			}
-			break;
+		}
+
+		resultPtr = Tcl_ObjSetVar2(interp, objv[arg], NULL, valuePtr,
+			TCL_LEAVE_ERR_MSG);
+		arg++;
+		if (resultPtr == NULL) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    return TCL_ERROR;
+		}
+		offset += (count + 1) / 2;
+		break;
+	    }
+	    case 'c':
+		size = 1;
+		goto scanNumber;
+	    case 't':
+	    case 's':
+	    case 'S':
+		size = 2;
+		goto scanNumber;
+	    case 'n':
+	    case 'i':
+	    case 'I':
+		size = 4;
+		goto scanNumber;
+	    case 'm':
+	    case 'w':
+	    case 'W':
+		size = 8;
+		goto scanNumber;
+	    case 'r':
+	    case 'R':
+	    case 'f':
+		size = sizeof(float);
+		goto scanNumber;
+	    case 'q':
+	    case 'Q':
+	    case 'd': {
+		unsigned char *src;
+
+		size = sizeof(double);
+		/* fall through */
+
+	    scanNumber:
+		if (arg >= objc) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    goto badIndex;
+		}
+		if (count == BINARY_NOCOUNT) {
+		    if ((length - offset) < size) {
+			goto done;
 		    }
-		    case '@': {
-			if (count == BINARY_NOCOUNT) {
-			    DeleteScanNumberCache(numberCachePtr);
-			    goto badCount;
-			}
-			if ((count == BINARY_ALL) || (count > length)) {
-			    offset = length;
-			} else {
-			    offset = count;
-			}
-			break;
+		    valuePtr = ScanNumber(buffer+offset, cmd, flags,
+			    &numberCachePtr);
+		    offset += size;
+		} else {
+		    if (count == BINARY_ALL) {
+			count = (length - offset) / size;
+		    }
+		    if ((length - offset) < (count * size)) {
+			goto done;
 		    }
-		    default: {
-			DeleteScanNumberCache(numberCachePtr);
-			errorString = str;
-			goto badField;
+		    valuePtr = Tcl_NewObj();
+		    src = buffer+offset;
+		    for (i = 0; i < count; i++) {
+			elementPtr = ScanNumber(src, cmd, flags,
+				&numberCachePtr);
+			src += size;
+			Tcl_ListObjAppendElement(NULL, valuePtr, elementPtr);
 		    }
+		    offset += count*size;
 		}
+
+		resultPtr = Tcl_ObjSetVar2(interp, objv[arg], NULL, valuePtr,
+			TCL_LEAVE_ERR_MSG);
+		arg++;
+		if (resultPtr == NULL) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    return TCL_ERROR;
+		}
+		break;
 	    }
+	    case 'x':
+		if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		if ((count == BINARY_ALL) || (count > (length - offset))) {
+		    offset = length;
+		} else {
+		    offset += count;
+		}
+		break;
+	    case 'X':
+		if (count == BINARY_NOCOUNT) {
+		    count = 1;
+		}
+		if ((count == BINARY_ALL) || (count > offset)) {
+		    offset = 0;
+		} else {
+		    offset -= count;
+		}
+		break;
+	    case '@':
+		if (count == BINARY_NOCOUNT) {
+		    DeleteScanNumberCache(numberCachePtr);
+		    goto badCount;
+		}
+		if ((count == BINARY_ALL) || (count > length)) {
+		    offset = length;
+		} else {
+		    offset = count;
+		}
+		break;
+	    default:
+		DeleteScanNumberCache(numberCachePtr);
+		errorString = str;
+		goto badField;
+	    }
+	}
 
-	    /*
-	     * Set the result to the last position of the cursor.
-	     */
+	/*
+	 * Set the result to the last position of the cursor.
+	 */
 
-	    done:
-	    Tcl_ResetResult(interp);
-	    Tcl_SetLongObj(Tcl_GetObjResult(interp), arg - 4);
-	    DeleteScanNumberCache(numberCachePtr);
-	    break;
-	}
+    done:
+	Tcl_SetObjResult(interp, Tcl_NewLongObj(arg - 4));
+	DeleteScanNumberCache(numberCachePtr);
+	break;
+    }
     }
     return TCL_OK;
 
-    badValue:
+  badValue:
     Tcl_ResetResult(interp);
-    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "expected ", errorString,
+    Tcl_AppendResult(interp, "expected ", errorString,
 	    " string but got \"", errorValue, "\" instead", NULL);
     return TCL_ERROR;
 
-    badCount:
+  badCount:
     errorString = "missing count for \"@\" field specifier";
     goto error;
 
-    badIndex:
+  badIndex:
     errorString = "not enough arguments for all format specifiers";
     goto error;
 
-    badField:
+  badField:
     {
 	Tcl_UniChar ch;
 	char buf[TCL_UTF_MAX + 1];
@@ -1365,7 +1373,7 @@ Tcl_BinaryObjCmd(dummy, interp, objc, objv)
 	return TCL_ERROR;
     }
 
-    error:
+  error:
     Tcl_AppendResult(interp, errorString, NULL);
     return TCL_ERROR;
 }
@@ -1375,15 +1383,15 @@ Tcl_BinaryObjCmd(dummy, interp, objc, objv)
  *
  * GetFormatSpec --
  *
- *	This function parses the format strings used in the binary
- *	format and scan commands.
+ *	This function parses the format strings used in the binary format and
+ *	scan commands.
  *
  * Results:
- *	Moves the formatPtr to the start of the next command. Returns
- *	the current command character and count in cmdPtr and countPtr.
- *	The count is set to BINARY_ALL if the count character was '*'
- *	or BINARY_NOCOUNT if no count was specified.  Returns 1 on
- *	success, or 0 if the string did not have a format specifier.
+ *	Moves the formatPtr to the start of the next command. Returns the
+ *	current command character and count in cmdPtr and countPtr. The count
+ *	is set to BINARY_ALL if the count character was '*' or BINARY_NOCOUNT
+ *	if no count was specified. Returns 1 on success, or 0 if the string
+ *	did not have a format specifier.
  *
  * Side effects:
  *	None.
@@ -1392,10 +1400,11 @@ Tcl_BinaryObjCmd(dummy, interp, objc, objv)
  */
 
 static int
-GetFormatSpec(formatPtr, cmdPtr, countPtr)
-    char **formatPtr;		/* Pointer to format string. */
-    char *cmdPtr;		/* Pointer to location of command char. */
-    int *countPtr;		/* Pointer to repeat count value. */
+GetFormatSpec(
+    char **formatPtr,		/* Pointer to format string. */
+    char *cmdPtr,		/* Pointer to location of command char. */
+    int *countPtr,		/* Pointer to repeat count value. */
+    int *flagsPtr)		/* Pointer to field flags */
 {
     /*
      * Skip any leading blanks.
@@ -1419,6 +1428,10 @@ GetFormatSpec(formatPtr, cmdPtr, countPtr)
 
     *cmdPtr = **formatPtr;
     (*formatPtr)++;
+    if (**formatPtr == 'u') {
+	(*formatPtr)++;
+	(*flagsPtr) |= BINARY_UNSIGNED;
+    }
     if (**formatPtr == '*') {
 	(*formatPtr)++;
 	(*countPtr) = BINARY_ALL;
@@ -1433,13 +1446,193 @@ GetFormatSpec(formatPtr, cmdPtr, countPtr)
 /*
  *----------------------------------------------------------------------
  *
+ * NeedReversing --
+ *
+ *	This routine determines, if bytes of a number need to be re-ordered,
+ *	and returns a numeric code indicating the re-ordering to be done.
+ *	This depends on the endiannes of the machine and the desired format.
+ *	It is in effect a table (whose contents depend on the endianness of
+ *	the system) describing whether a value needs reversing or not. Anyone
+ *	porting the code to a big-endian platform should take care to make
+ *	sure that they define WORDS_BIGENDIAN though this is already done by
+ *	configure for the Unix build; little-endian platforms (including
+ *	Windows) don't need to do anything.
+ *
+ * Results:
+ *	0	No re-ordering needed.
+ *	1	Reverse the bytes:	01234567 <-> 76543210 (little to big)
+ *	2	Apply this re-ordering: 01234567 <-> 45670123 (Nokia to little)
+ *	3	Apply this re-ordering: 01234567 <-> 32107654 (Nokia to big)
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NeedReversing(
+    int format)
+{
+    switch (format) {
+	/* native floats and doubles: never reverse */
+    case 'd':
+    case 'f':
+	/* big endian ints: never reverse */
+    case 'I':
+    case 'S':
+    case 'W':
+#ifdef WORDS_BIGENDIAN
+	/* native ints: reverse if we're little-endian */
+    case 'n':
+    case 't':
+    case 'm':
+	/* f: reverse if we're little-endian */
+    case 'Q':
+    case 'R':
+#else /* !WORDS_BIGENDIAN */
+	/* small endian floats: reverse if we're big-endian */
+    case 'r':
+#endif /* WORDS_BIGENDIAN */
+	return 0;
+
+#ifdef WORDS_BIGENDIAN
+	/* small endian floats: reverse if we're big-endian */
+    case 'q':
+    case 'r':
+#else /* !WORDS_BIGENDIAN */
+	/* native ints: reverse if we're little-endian */
+    case 'n':
+    case 't':
+    case 'm':
+	/* f: reverse if we're little-endian */
+    case 'R':
+#endif /* WORDS_BIGENDIAN */
+	/* small endian ints: always reverse */
+    case 'i':
+    case 's':
+    case 'w':
+	return 1;
+
+#ifndef WORDS_BIGENDIAN
+    /*
+     * The Q and q formats need special handling to account for the unusual
+     * byte ordering of 8-byte floats on Nokia 770 systems, which claim to be
+     * little-endian, but also reverse word order.
+     */
+
+    case 'Q':
+	if (TclNokia770Doubles()) {
+	    return 3;
+	}
+	return 1;
+    case 'q':
+	if (TclNokia770Doubles()) {
+	    return 2;
+	}
+	return 0;
+#endif
+    }
+
+    Tcl_Panic("unexpected fallthrough");
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CopyNumber --
+ *
+ *	This routine is called by FormatNumber and ScanNumber to copy a
+ *	floating-point number. If required, bytes are reversed while copying.
+ *	The behaviour is only fully defined when used with IEEE float and
+ *	double values (guaranteed to be 4 and 8 bytes long, respectively.)
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	Copies length bytes
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+CopyNumber(
+    const void *from,		/* source */
+    void *to,			/* destination */
+    unsigned int length,	/* Number of bytes to copy */
+    int type)			/* What type of thing are we copying? */
+{
+    switch (NeedReversing(type)) {
+    case 0: 
+	memcpy(to, from, length);
+	break;
+    case 1: {
+	const unsigned char *fromPtr = from;
+	unsigned char *toPtr = to;
+
+	switch (length) {
+	case 4:
+	    toPtr[0] = fromPtr[3];
+	    toPtr[1] = fromPtr[2];
+	    toPtr[2] = fromPtr[1];
+	    toPtr[3] = fromPtr[0];
+	    break;
+	case 8:
+	    toPtr[0] = fromPtr[7];
+	    toPtr[1] = fromPtr[6];
+	    toPtr[2] = fromPtr[5];
+	    toPtr[3] = fromPtr[4];
+	    toPtr[4] = fromPtr[3];
+	    toPtr[5] = fromPtr[2];
+	    toPtr[6] = fromPtr[1];
+	    toPtr[7] = fromPtr[0];
+	    break;
+	}
+	break;
+    }
+    case 2: {
+	const unsigned char *fromPtr = from;
+	unsigned char *toPtr = to;
+
+	toPtr[0] = fromPtr[4];
+	toPtr[1] = fromPtr[5];
+	toPtr[2] = fromPtr[6];
+	toPtr[3] = fromPtr[7];
+	toPtr[4] = fromPtr[0];
+	toPtr[5] = fromPtr[1];
+	toPtr[6] = fromPtr[2];
+	toPtr[7] = fromPtr[3];
+	break;
+    }
+    case 3: {
+	const unsigned char *fromPtr = from;
+	unsigned char *toPtr = to;
+
+	toPtr[0] = fromPtr[3];
+	toPtr[1] = fromPtr[2];
+	toPtr[2] = fromPtr[1];
+	toPtr[3] = fromPtr[0];
+	toPtr[4] = fromPtr[7];
+	toPtr[5] = fromPtr[6];
+	toPtr[6] = fromPtr[5];
+	toPtr[7] = fromPtr[4];
+	break;
+    }
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * FormatNumber --
  *
- *	This routine is called by Tcl_BinaryObjCmd to format a number
- *	into a location pointed at by cursor.
+ *	This routine is called by Tcl_BinaryObjCmd to format a number into a
+ *	location pointed at by cursor.
  *
  * Results:
- *	 A standard Tcl result.
+ *	A standard Tcl result.
  *
  * Side effects:
  *	Moves the cursor to the next location to be written into.
@@ -1448,64 +1641,79 @@ GetFormatSpec(formatPtr, cmdPtr, countPtr)
  */
 
 static int
-FormatNumber(interp, type, src, cursorPtr)
-    Tcl_Interp *interp;		/* Current interpreter, used to report
+FormatNumber(
+    Tcl_Interp *interp,		/* Current interpreter, used to report
 				 * errors. */
-    int type;			/* Type of number to format. */
-    Tcl_Obj *src;		/* Number to format. */
-    unsigned char **cursorPtr;	/* Pointer to index into destination buffer. */
+    int type,			/* Type of number to format. */
+    Tcl_Obj *src,		/* Number to format. */
+    unsigned char **cursorPtr)	/* Pointer to index into destination buffer. */
 {
     long value;
     double dvalue;
     Tcl_WideInt wvalue;
+    float fvalue;
 
     switch (type) {
     case 'd':
-    case 'f':
+    case 'q':
+    case 'Q':
 	/*
-	 * For floating point types, we need to copy the data using
-	 * memcpy to avoid alignment issues.
+	 * Double-precision floating point values. Tcl_GetDoubleFromObj
+	 * returns TCL_ERROR for NaN, but we can check by comparing the
+	 * object's type pointer.
 	 */
 
 	if (Tcl_GetDoubleFromObj(interp, src, &dvalue) != TCL_OK) {
-	    return TCL_ERROR;
+	    if (src->typePtr != &tclDoubleType) {
+		return TCL_ERROR;
+	    }
+	    dvalue = src->internalRep.doubleValue;
 	}
-	if (type == 'd') {
-	    /*
-	     * Can't just memcpy() here. [Bug 1116542]
-	     */
-
-	    CopyNumber(&dvalue, *cursorPtr, sizeof(double));
-	    *cursorPtr += sizeof(double);
-	} else {
-	    float fvalue;
+	CopyNumber(&dvalue, *cursorPtr, sizeof(double), type);
+	*cursorPtr += sizeof(double);
+	return TCL_OK;
 
-	    /*
-	     * Because some compilers will generate floating point exceptions
-	     * on an overflow cast (e.g. Borland), we restrict the values
-	     * to the valid range for float.
-	     */
+    case 'f':
+    case 'r':
+    case 'R':
+	/*
+	 * Single-precision floating point values. Tcl_GetDoubleFromObj
+	 * returns TCL_ERROR for NaN, but we can check by comparing the
+	 * object's type pointer.
+	 */
 
-	    if (fabs(dvalue) > (double)FLT_MAX) {
-		fvalue = (dvalue >= 0.0) ? FLT_MAX : -FLT_MAX;
-	    } else {
-		fvalue = (float) dvalue;
+	if (Tcl_GetDoubleFromObj(interp, src, &dvalue) != TCL_OK) {
+	    if (src->typePtr != &tclDoubleType) {
+		return TCL_ERROR;
 	    }
-	    memcpy((VOID *) *cursorPtr, (VOID *) &fvalue, sizeof(float));
-	    *cursorPtr += sizeof(float);
+	    dvalue = src->internalRep.doubleValue;
+	}
+
+	/*
+	 * Because some compilers will generate floating point exceptions on
+	 * an overflow cast (e.g. Borland), we restrict the values to the
+	 * valid range for float.
+	 */
+
+	if (fabs(dvalue) > (double)FLT_MAX) {
+	    fvalue = (dvalue >= 0.0) ? FLT_MAX : -FLT_MAX;
+	} else {
+	    fvalue = (float) dvalue;
 	}
+	CopyNumber(&fvalue, *cursorPtr, sizeof(float), type);
+	*cursorPtr += sizeof(float);
 	return TCL_OK;
 
 	/*
-	 * Next cases separate from other integer cases because we
-	 * need a different API to get a wide.
+	 * 64-bit integer values.
 	 */
     case 'w':
     case 'W':
+    case 'm':
 	if (Tcl_GetWideIntFromObj(interp, src, &wvalue) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-	if (type == 'w') {
+	if (NeedReversing(type)) {
 	    *(*cursorPtr)++ = (unsigned char) wvalue;
 	    *(*cursorPtr)++ = (unsigned char) (wvalue >> 8);
 	    *(*cursorPtr)++ = (unsigned char) (wvalue >> 16);
@@ -1525,170 +1733,221 @@ FormatNumber(interp, type, src, cursorPtr)
 	    *(*cursorPtr)++ = (unsigned char) wvalue;
 	}
 	return TCL_OK;
-    default:
-	if (Tcl_GetLongFromObj(interp, src, &value) != TCL_OK) {
+
+	/*
+	 * 32-bit integer values.
+	 */
+    case 'i':
+    case 'I':
+    case 'n':
+	if (TclGetLongFromObj(interp, src, &value) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-	if (type == 'c') {
-	    *(*cursorPtr)++ = (unsigned char) value;
-	} else if (type == 's') {
-	    *(*cursorPtr)++ = (unsigned char) value;
-	    *(*cursorPtr)++ = (unsigned char) (value >> 8);
-	} else if (type == 'S') {
-	    *(*cursorPtr)++ = (unsigned char) (value >> 8);
-	    *(*cursorPtr)++ = (unsigned char) value;
-	} else if (type == 'i') {
+	if (NeedReversing(type)) {
 	    *(*cursorPtr)++ = (unsigned char) value;
 	    *(*cursorPtr)++ = (unsigned char) (value >> 8);
 	    *(*cursorPtr)++ = (unsigned char) (value >> 16);
 	    *(*cursorPtr)++ = (unsigned char) (value >> 24);
-	} else if (type == 'I') {
+	} else {
 	    *(*cursorPtr)++ = (unsigned char) (value >> 24);
 	    *(*cursorPtr)++ = (unsigned char) (value >> 16);
 	    *(*cursorPtr)++ = (unsigned char) (value >> 8);
 	    *(*cursorPtr)++ = (unsigned char) value;
 	}
 	return TCL_OK;
+
+	/*
+	 * 16-bit integer values.
+	 */
+    case 's':
+    case 'S':
+    case 't':
+	if (TclGetLongFromObj(interp, src, &value) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (NeedReversing(type)) {
+	    *(*cursorPtr)++ = (unsigned char) value;
+	    *(*cursorPtr)++ = (unsigned char) (value >> 8);
+	} else {
+	    *(*cursorPtr)++ = (unsigned char) (value >> 8);
+	    *(*cursorPtr)++ = (unsigned char) value;
+	}
+	return TCL_OK;
+
+	/*
+	 * 8-bit integer values.
+	 */
+    case 'c':
+	if (TclGetLongFromObj(interp, src, &value) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	*(*cursorPtr)++ = (unsigned char) value;
+	return TCL_OK;
+
+    default:
+	Tcl_Panic("unexpected fallthrough");
+	return TCL_ERROR;
     }
 }
 
-/* Ugly workaround for old and broken compiler! */
-static void
-CopyNumber(from, to, length)
-    CONST VOID *from;
-    VOID *to;
-    unsigned int length;
-{
-    memcpy(to, from, length);
-}
-
 /*
  *----------------------------------------------------------------------
  *
  * ScanNumber --
  *
- *	This routine is called by Tcl_BinaryObjCmd to scan a number
- *	out of a buffer.
+ *	This routine is called by Tcl_BinaryObjCmd to scan a number out of a
+ *	buffer.
  *
  * Results:
- *	Returns a newly created object containing the scanned number.
- *	This object has a ref count of zero.
+ *	Returns a newly created object containing the scanned number. This
+ *	object has a ref count of zero.
  *
  * Side effects:
- *	Might reuse an object in the number cache, place a new object
- *	in the cache, or delete the cache and set the reference to
- *	it (itself passed in by reference) to NULL.
+ *	Might reuse an object in the number cache, place a new object in the
+ *	cache, or delete the cache and set the reference to it (itself passed
+ *	in by reference) to NULL.
  *
  *----------------------------------------------------------------------
  */
 
 static Tcl_Obj *
-ScanNumber(buffer, type, numberCachePtrPtr)
-    unsigned char *buffer;	/* Buffer to scan number from. */
-    int type;			/* Format character from "binary scan" */
-    Tcl_HashTable **numberCachePtrPtr;
+ScanNumber(
+    unsigned char *buffer,	/* Buffer to scan number from. */
+    int type,			/* Format character from "binary scan" */
+    int flags,			/* Format field flags */
+    Tcl_HashTable **numberCachePtrPtr)
 				/* Place to look for cache of scanned
 				 * value objects, or NULL if too many
 				 * different numbers have been scanned. */
 {
     long value;
+    float fvalue;
+    double dvalue;
     Tcl_WideUInt uwvalue;
 
     /*
      * We cannot rely on the compiler to properly sign extend integer values
      * when we cast from smaller values to larger values because we don't know
-     * the exact size of the integer types.  So, we have to handle sign
+     * the exact size of the integer types. So, we have to handle sign
      * extension explicitly by checking the high bit and padding with 1's as
-     * needed.
+     * needed. This practice is disabled if the BINARY_UNSIGNED flag is set.
      */
 
     switch (type) {
-	case 'c':
-	    /*
-	     * Characters need special handling.  We want to produce a
-	     * signed result, but on some platforms (such as AIX) chars
-	     * are unsigned.  To deal with this, check for a value that
-	     * should be negative but isn't.
-	     */
+    case 'c':
+	/*
+	 * Characters need special handling. We want to produce a signed
+	 * result, but on some platforms (such as AIX) chars are unsigned. To
+	 * deal with this, check for a value that should be negative but
+	 * isn't.
+	 */
 
-	    value = buffer[0];
+	value = buffer[0];
+	if (!(flags & BINARY_UNSIGNED)) {
 	    if (value & 0x80) {
 		value |= -0x100;
 	    }
-	    goto returnNumericObject;
+	}
+	goto returnNumericObject;
+
+	/*
+	 * 16-bit numeric values. We need the sign extension trick (see above)
+	 * here as well.
+	 */
 
-	case 's':
+    case 's':
+    case 'S':
+    case 't':
+	if (NeedReversing(type)) {
 	    value = (long) (buffer[0] + (buffer[1] << 8));
-	    goto shortValue;
-	case 'S':
+	} else {
 	    value = (long) (buffer[1] + (buffer[0] << 8));
-	    shortValue:
+	}
+	if (!(flags & BINARY_UNSIGNED)) {
 	    if (value & 0x8000) {
 		value |= -0x10000;
 	    }
-	    goto returnNumericObject;
+	}
+	goto returnNumericObject;
 
-	case 'i':
-	    value = (long) (buffer[0] 
+	/*
+	 * 32-bit numeric values.
+	 */
+
+    case 'i':
+    case 'I':
+    case 'n':
+	if (NeedReversing(type)) {
+	    value = (long) (buffer[0]
 		    + (buffer[1] << 8)
 		    + (buffer[2] << 16)
-		    + (buffer[3] << 24));
-	    goto intValue;
-	case 'I':
+		    + (((long)buffer[3]) << 24));
+	} else {
 	    value = (long) (buffer[3]
 		    + (buffer[2] << 8)
 		    + (buffer[1] << 16)
-		    + (buffer[0] << 24));
-	    intValue:
-	    /*
-	     * Check to see if the value was sign extended properly on
-	     * systems where an int is more than 32-bits.
-	     */
+		    + (((long)buffer[0]) << 24));
+	}
+
+	/*
+	 * Check to see if the value was sign extended properly on systems
+	 * where an int is more than 32-bits.
+	 * We avoid caching unsigned integers as we cannot distinguish between
+	 * 32bit signed and unsigned in the hash (short and char are ok).
+	 */
+
+	if (flags & BINARY_UNSIGNED) {
+	    return Tcl_NewWideIntObj((Tcl_WideInt)(unsigned long)value);
+	}
+	if ((value & (((unsigned int)1)<<31)) && (value > 0)) {
+	    value -= (((unsigned int)1)<<31);
+	    value -= (((unsigned int)1)<<31);
+	}
+
+    returnNumericObject:
+	if (*numberCachePtrPtr == NULL) {
+	    return Tcl_NewLongObj(value);
+	} else {
+	    register Tcl_HashTable *tablePtr = *numberCachePtrPtr;
+	    register Tcl_HashEntry *hPtr;
+	    int isNew;
 
-	    if ((value & (((unsigned int)1)<<31)) && (value > 0)) {
-		value -= (((unsigned int)1)<<31);
-		value -= (((unsigned int)1)<<31);
+	    hPtr = Tcl_CreateHashEntry(tablePtr, INT2PTR(value), &isNew);
+	    if (!isNew) {
+		return (Tcl_Obj *) Tcl_GetHashValue(hPtr);
 	    }
-	    returnNumericObject:
-	    if (*numberCachePtrPtr == NULL) {
-		return Tcl_NewLongObj(value);
-	    } else {
-		register Tcl_HashTable *tablePtr = *numberCachePtrPtr;
-		register Tcl_HashEntry *hPtr;
-		int isNew;
-
-		hPtr = Tcl_CreateHashEntry(tablePtr, (char *)value, &isNew);
-		if (!isNew) {
-		    return (Tcl_Obj *) Tcl_GetHashValue(hPtr);
-		}
-		if (tablePtr->numEntries > BINARY_SCAN_MAX_CACHE) {
-		    /*
-		     * We've overflowed the cache!  Someone's parsing
-		     * a LOT of varied binary data in a single call!
-		     * Bail out by switching back to the old behaviour
-		     * for the rest of the scan.
-		     *
-		     * Note that anyone just using the 'c' conversion
-		     * (for bytes) cannot trigger this.
-		     */
-		    DeleteScanNumberCache(tablePtr);
-		    *numberCachePtrPtr = NULL;
-		    return Tcl_NewLongObj(value);
-		} else {
-		    register Tcl_Obj *objPtr = Tcl_NewLongObj(value);
+	    if (tablePtr->numEntries <= BINARY_SCAN_MAX_CACHE) {
+		register Tcl_Obj *objPtr = Tcl_NewLongObj(value);
 
-		    Tcl_IncrRefCount(objPtr);
-		    Tcl_SetHashValue(hPtr, (ClientData) objPtr);
-		    return objPtr;
-		}
+		Tcl_IncrRefCount(objPtr);
+		Tcl_SetHashValue(hPtr, (ClientData) objPtr);
+		return objPtr;
 	    }
 
 	    /*
-	     * Do not cache wide values; they are already too large to
-	     * use as keys.
+	     * We've overflowed the cache! Someone's parsing a LOT of varied
+	     * binary data in a single call! Bail out by switching back to the
+	     * old behaviour for the rest of the scan.
+	     *
+	     * Note that anyone just using the 'c' conversion (for bytes)
+	     * cannot trigger this.
 	     */
-	case 'w':
-	    uwvalue =  ((Tcl_WideUInt) buffer[0])
+
+	    DeleteScanNumberCache(tablePtr);
+	    *numberCachePtrPtr = NULL;
+	    return Tcl_NewLongObj(value);
+	}
+
+	/*
+	 * Do not cache wide (64-bit) values; they are already too large to
+	 * use as keys.
+	 */
+
+    case 'w':
+    case 'W':
+    case 'm':
+	if (NeedReversing(type)) {
+	    uwvalue = ((Tcl_WideUInt) buffer[0])
 		    | (((Tcl_WideUInt) buffer[1]) << 8)
 		    | (((Tcl_WideUInt) buffer[2]) << 16)
 		    | (((Tcl_WideUInt) buffer[3]) << 24)
@@ -1696,9 +1955,8 @@ ScanNumber(buffer, type, numberCachePtrPtr)
 		    | (((Tcl_WideUInt) buffer[5]) << 40)
 		    | (((Tcl_WideUInt) buffer[6]) << 48)
 		    | (((Tcl_WideUInt) buffer[7]) << 56);
-	    return Tcl_NewWideIntObj((Tcl_WideInt) uwvalue);
-	case 'W':
-	    uwvalue =  ((Tcl_WideUInt) buffer[7])
+	} else {
+	    uwvalue = ((Tcl_WideUInt) buffer[7])
 		    | (((Tcl_WideUInt) buffer[6]) << 8)
 		    | (((Tcl_WideUInt) buffer[5]) << 16)
 		    | (((Tcl_WideUInt) buffer[4]) << 24)
@@ -1706,23 +1964,42 @@ ScanNumber(buffer, type, numberCachePtrPtr)
 		    | (((Tcl_WideUInt) buffer[2]) << 40)
 		    | (((Tcl_WideUInt) buffer[1]) << 48)
 		    | (((Tcl_WideUInt) buffer[0]) << 56);
-	    return Tcl_NewWideIntObj((Tcl_WideInt) uwvalue);
-
-	    /*
-	     * Do not cache double values; they are already too large
-	     * to use as keys and the values stored are utterly
-	     * incompatible too.
-	     */
-	case 'f': {
-	    float fvalue;
-	    memcpy((VOID *) &fvalue, (VOID *) buffer, sizeof(float));
-	    return Tcl_NewDoubleObj(fvalue);
 	}
-	case 'd': {
-	    double dvalue;
-	    memcpy((VOID *) &dvalue, (VOID *) buffer, sizeof(double));
-	    return Tcl_NewDoubleObj(dvalue);
+	if (flags & BINARY_UNSIGNED) {
+	    Tcl_Obj *bigObj = NULL;
+	    mp_int big;
+
+	    TclBNInitBignumFromWideUInt(&big, uwvalue);
+	    bigObj = Tcl_NewBignumObj(&big);
+	    return bigObj;
 	}
+	return Tcl_NewWideIntObj((Tcl_WideInt) uwvalue);
+
+	/*
+	 * Do not cache double values; they are already too large to use as
+	 * keys and the values stored are utterly incompatible with the
+	 * integer part of the cache.
+	 */
+
+	/*
+	 * 32-bit IEEE single-precision floating point.
+	 */
+
+    case 'f':
+    case 'R':
+    case 'r':
+	CopyNumber(buffer, &fvalue, sizeof(float), type);
+	return Tcl_NewDoubleObj(fvalue);
+
+	/*
+	 * 64-bit IEEE double-precision floating point.
+	 */
+
+    case 'd':
+    case 'Q':
+    case 'q':
+	CopyNumber(buffer, &dvalue, sizeof(double), type);
+	return Tcl_NewDoubleObj(dvalue);
     }
     return NULL;
 }
@@ -1731,7 +2008,7 @@ ScanNumber(buffer, type, numberCachePtrPtr)
  *----------------------------------------------------------------------
  *
  * DeleteScanNumberCache --
- * 
+ *
  *	Deletes the hash table acting as a scan number cache.
  *
  * Results:
@@ -1744,10 +2021,11 @@ ScanNumber(buffer, type, numberCachePtrPtr)
  */
 
 static void
-DeleteScanNumberCache(numberCachePtr)
-    Tcl_HashTable *numberCachePtr;	/* Pointer to the hash table, or
-					 * NULL (when the cache has already
-					 * been deleted due to overflow.) */
+DeleteScanNumberCache(
+    Tcl_HashTable *numberCachePtr)
+				/* Pointer to the hash table, or NULL (when
+				 * the cache has already been deleted due to
+				 * overflow.) */
 {
     Tcl_HashEntry *hEntry;
     Tcl_HashSearch search;
@@ -1758,7 +2036,7 @@ DeleteScanNumberCache(numberCachePtr)
 
     hEntry = Tcl_FirstHashEntry(numberCachePtr, &search);
     while (hEntry != NULL) {
-	register Tcl_Obj *value = (Tcl_Obj *) Tcl_GetHashValue(hEntry);
+	register Tcl_Obj *value = Tcl_GetHashValue(hEntry);
 
 	if (value != NULL) {
 	    Tcl_DecrRefCount(value);
@@ -1767,3 +2045,11 @@ DeleteScanNumberCache(numberCachePtr)
     }
     Tcl_DeleteHashTable(numberCachePtr);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclCkalloc.c b/generic/tclCkalloc.c
index 6de9720..5263e82 100644
--- a/generic/tclCkalloc.c
+++ b/generic/tclCkalloc.c
@@ -1,21 +1,21 @@
 /*
  * tclCkalloc.c --
  *
- *    Interface to malloc and free that provides support for debugging problems
- *    involving overwritten, double freeing memory and loss of memory.
+ *    Interface to malloc and free that provides support for debugging
+ *    problems involving overwritten, double freeing memory and loss of
+ *    memory.
  *
  * Copyright (c) 1991-1994 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
  * This code contributed by Karl Lehenbauer and Mark Diekhans
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 #define FALSE	0
 #define TRUE	1
@@ -28,29 +28,29 @@
  */
 
 typedef struct MemTag {
-    int refCount;		/* Number of mem_headers referencing
-				 * this tag. */
-    char string[4];		/* Actual size of string will be as
-				 * large as needed for actual tag.  This
-				 * must be the last field in the structure. */
+    int refCount;		/* Number of mem_headers referencing this
+				 * tag. */
+    char string[4];		/* Actual size of string will be as large as
+				 * needed for actual tag. This must be the
+				 * last field in the structure. */
 } MemTag;
 
 #define TAG_SIZE(bytesInString) ((unsigned) sizeof(MemTag) + bytesInString - 3)
 
-static MemTag *curTagPtr = NULL;/* Tag to use in all future mem_headers
-				 * (set by "memory tag" command). */
+static MemTag *curTagPtr = NULL;/* Tag to use in all future mem_headers (set
+				 * by "memory tag" command). */
 
 /*
- * One of the following structures is allocated just before each
- * dynamically allocated chunk of memory, both to record information
- * about the chunk and to help detect chunk under-runs.
+ * One of the following structures is allocated just before each dynamically
+ * allocated chunk of memory, both to record information about the chunk and
+ * to help detect chunk under-runs.
  */
 
 #define LOW_GUARD_SIZE (8 + (32 - (sizeof(long) + sizeof(int)))%8)
 struct mem_header {
     struct mem_header *flink;
     struct mem_header *blink;
-    MemTag *tagPtr;		/* Tag from "memory tag" command;  may be
+    MemTag *tagPtr;		/* Tag from "memory tag" command; may be
 				 * NULL. */
     CONST char *file;
     long length;
@@ -59,9 +59,8 @@ struct mem_header {
 				/* Aligns body on 8-byte boundary, plus
 				 * provides at least 8 additional guard bytes
 				 * to detect underruns. */
-    char body[1];		/* First byte of client's space.  Actual
-				 * size of this field will be larger than
-				 * one. */
+    char body[1];		/* First byte of client's space. Actual size
+				 * of this field will be larger than one. */
 };
 
 static struct mem_header *allocHead = NULL;  /* List of allocated structures */
@@ -69,16 +68,16 @@ static struct mem_header *allocHead = NULL;  /* List of allocated structures */
 #define GUARD_VALUE  0141
 
 /*
- * The following macro determines the amount of guard space *above* each
- * chunk of memory.
+ * The following macro determines the amount of guard space *above* each chunk
+ * of memory.
  */
 
 #define HIGH_GUARD_SIZE 8
 
 /*
  * The following macro computes the offset of the "body" field within
- * mem_header.  It is used to get back to the header pointer from the
- * body pointer that's used by clients.
+ * mem_header. It is used to get back to the header pointer from the body
+ * pointer that's used by clients.
  */
 
 #define BODY_OFFSET \
@@ -86,25 +85,25 @@ static struct mem_header *allocHead = NULL;  /* List of allocated structures */
 
 static int total_mallocs = 0;
 static int total_frees = 0;
-static int current_bytes_malloced = 0;
-static int maximum_bytes_malloced = 0;
+static size_t current_bytes_malloced = 0;
+static size_t maximum_bytes_malloced = 0;
 static int current_malloc_packets = 0;
 static int maximum_malloc_packets = 0;
 static int break_on_malloc = 0;
 static int trace_on_at_malloc = 0;
-static int  alloc_tracing = FALSE;
-static int  init_malloced_bodies = TRUE;
+static int alloc_tracing = FALSE;
+static int init_malloced_bodies = TRUE;
 #ifdef MEM_VALIDATE
-    static int  validate_memory = TRUE;
+static int validate_memory = TRUE;
 #else
-    static int  validate_memory = FALSE;
+static int validate_memory = FALSE;
 #endif
 
 /*
- * The following variable indicates to TclFinalizeMemorySubsystem()
- * that it should dump out the state of memory before exiting.  If the
- * value is non-NULL, it gives the name of the file in which to
- * dump memory usage information.
+ * The following variable indicates to TclFinalizeMemorySubsystem() that it
+ * should dump out the state of memory before exiting. If the value is
+ * non-NULL, it gives the name of the file in which to dump memory usage
+ * information.
  */
 
 char *tclMemDumpFileName = NULL;
@@ -114,10 +113,11 @@ static char dumpFile[100];	/* Records where to dump memory allocation
 				 * information. */
 
 /*
- * Mutex to serialize allocations.  This is a low-level mutex that must
- * be explicitly initialized.  This is necessary because the self
- * initializing mutexes use ckalloc...
+ * Mutex to serialize allocations. This is a low-level mutex that must be
+ * explicitly initialized. This is necessary because the self initializing
+ * mutexes use ckalloc...
  */
+
 static Tcl_Mutex *ckallocMutexPtr;
 static int ckallocInit = 0;
 
@@ -125,26 +125,27 @@ static int ckallocInit = 0;
  * Prototypes for procedures defined in this file:
  */
 
-static int		CheckmemCmd _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char *argv[]));
-static int		MemoryCmd _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static void		ValidateMemory _ANSI_ARGS_((
-			    struct mem_header *memHeaderP, CONST char *file,
-			    int line, int nukeGuards));
+static int		CheckmemCmd(ClientData clientData, Tcl_Interp *interp,
+			    int argc, CONST char *argv[]);
+static int		MemoryCmd(ClientData clientData, Tcl_Interp *interp,
+			    int argc, CONST char *argv[]);
+static void		ValidateMemory(struct mem_header *memHeaderP,
+			    CONST char *file, int line, int nukeGuards);
 
 /*
  *----------------------------------------------------------------------
  *
  * TclInitDbCkalloc --
- *	Initialize the locks used by the allocator.
- *	This is only appropriate to call in a single threaded environment,
- *	such as during TclInitSubsystems.
+ *
+ *	Initialize the locks used by the allocator. This is only appropriate
+ *	to call in a single threaded environment, such as during
+ *	TclInitSubsystems.
  *
  *----------------------------------------------------------------------
  */
+
 void
-TclInitDbCkalloc()
+TclInitDbCkalloc(void)
 {
     if (!ckallocInit) {
 	ckallocInit = 1;
@@ -160,29 +161,40 @@ TclInitDbCkalloc()
  *----------------------------------------------------------------------
  *
  * TclDumpMemoryInfo --
- *     Display the global memory management statistics.
+ *
+ *	Display the global memory management statistics.
  *
  *----------------------------------------------------------------------
  */
-void
-TclDumpMemoryInfo(outFile)
-    FILE *outFile;
+
+int
+TclDumpMemoryInfo(ClientData clientData, int flags)
 {
-    fprintf(outFile,"total mallocs             %10d\n",
-	    total_mallocs);
-    fprintf(outFile,"total frees               %10d\n",
-	    total_frees);
-    fprintf(outFile,"current packets allocated %10d\n",
-	    current_malloc_packets);
-    fprintf(outFile,"current bytes allocated   %10d\n",
-	    current_bytes_malloced);
-    fprintf(outFile,"maximum packets allocated %10d\n",
-	    maximum_malloc_packets);
-    fprintf(outFile,"maximum bytes allocated   %10d\n",
-	    maximum_bytes_malloced);
+    char buf[1024];
+
+    if (clientData == NULL) { return 0; }
+    sprintf(buf,
+	    "total mallocs             %10d\n"
+	    "total frees               %10d\n"
+	    "current packets allocated %10d\n"
+	    "current bytes allocated   %10lu\n"
+	    "maximum packets allocated %10d\n"
+	    "maximum bytes allocated   %10lu\n",
+	    total_mallocs,
+	    total_frees,
+	    current_malloc_packets,
+	    (unsigned long)current_bytes_malloced,
+	    maximum_malloc_packets,
+	    (unsigned long)maximum_bytes_malloced);
+    if (flags == 0) {
+	fprintf((FILE *)clientData, buf);
+    } else {
+	/* Assume objPtr to append to */
+	Tcl_AppendToObj((Tcl_Obj *) clientData, buf, -1);
+    }
+    return 1;
 }
 
-
 /*
  *----------------------------------------------------------------------
  *
@@ -201,67 +213,68 @@ TclDumpMemoryInfo(outFile)
  */
 
 static void
-ValidateMemory(memHeaderP, file, line, nukeGuards)
-    struct mem_header *memHeaderP;	/* Memory chunk to validate */
-    CONST char        *file;		/* File containing the call to
-					 * Tcl_ValidateAllMemory */
-    int                line;		/* Line number of call to
-					 * Tcl_ValidateAllMemory */
-    int                nukeGuards;	/* If non-zero, indicates that the
-					 * memory guards are to be reset to 0
-					 * after they have been printed */
+ValidateMemory(
+    struct mem_header *memHeaderP,
+				/* Memory chunk to validate */
+    CONST char *file,		/* File containing the call to
+				 * Tcl_ValidateAllMemory */
+    int line,			/* Line number of call to
+				 * Tcl_ValidateAllMemory */
+    int nukeGuards)		/* If non-zero, indicates that the memory
+				 * guards are to be reset to 0 after they have
+				 * been printed */
 {
     unsigned char *hiPtr;
-    int   idx;
-    int   guard_failed = FALSE;
+    size_t idx;
+    int guard_failed = FALSE;
     int byte;
 
     for (idx = 0; idx < LOW_GUARD_SIZE; idx++) {
-        byte = *(memHeaderP->low_guard + idx);
-        if (byte != GUARD_VALUE) {
-            guard_failed = TRUE;
-            fflush(stdout);
+	byte = *(memHeaderP->low_guard + idx);
+	if (byte != GUARD_VALUE) {
+	    guard_failed = TRUE;
+	    fflush(stdout);
 	    byte &= 0xff;
-            fprintf(stderr, "low guard byte %d is 0x%x  \t%c\n", idx, byte,
+	    fprintf(stderr, "low guard byte %d is 0x%x  \t%c\n", (int)idx, byte,
 		    (isprint(UCHAR(byte)) ? byte : ' ')); /* INTL: bytes */
-        }
+	}
     }
     if (guard_failed) {
-        TclDumpMemoryInfo (stderr);
-        fprintf(stderr, "low guard failed at %lx, %s %d\n",
-                 (long unsigned int) memHeaderP->body, file, line);
-        fflush(stderr);  /* In case name pointer is bad. */
-        fprintf(stderr, "%ld bytes allocated at (%s %d)\n", memHeaderP->length,
+	TclDumpMemoryInfo((ClientData) stderr, 0);
+	fprintf(stderr, "low guard failed at %lx, %s %d\n",
+		(long unsigned int) memHeaderP->body, file, line);
+	fflush(stderr);			/* In case name pointer is bad. */
+	fprintf(stderr, "%ld bytes allocated at (%s %d)\n", memHeaderP->length,
 		memHeaderP->file, memHeaderP->line);
-        panic ("Memory validation failure");
+	Tcl_Panic("Memory validation failure");
     }
 
     hiPtr = (unsigned char *)memHeaderP->body + memHeaderP->length;
     for (idx = 0; idx < HIGH_GUARD_SIZE; idx++) {
-        byte = *(hiPtr + idx);
-        if (byte != GUARD_VALUE) {
-            guard_failed = TRUE;
-            fflush (stdout);
+	byte = *(hiPtr + idx);
+	if (byte != GUARD_VALUE) {
+	    guard_failed = TRUE;
+	    fflush(stdout);
 	    byte &= 0xff;
-            fprintf(stderr, "hi guard byte %d is 0x%x  \t%c\n", idx, byte,
+	    fprintf(stderr, "hi guard byte %d is 0x%x  \t%c\n", (int)idx, byte,
 		    (isprint(UCHAR(byte)) ? byte : ' ')); /* INTL: bytes */
-        }
+	}
     }
 
     if (guard_failed) {
-        TclDumpMemoryInfo (stderr);
-        fprintf(stderr, "high guard failed at %lx, %s %d\n",
-                 (long unsigned int) memHeaderP->body, file, line);
-        fflush(stderr);  /* In case name pointer is bad. */
-        fprintf(stderr, "%ld bytes allocated at (%s %d)\n",
+	TclDumpMemoryInfo((ClientData) stderr, 0);
+	fprintf(stderr, "high guard failed at %lx, %s %d\n",
+		(long unsigned int) memHeaderP->body, file, line);
+	fflush(stderr);			/* In case name pointer is bad. */
+	fprintf(stderr, "%ld bytes allocated at (%s %d)\n",
 		memHeaderP->length, memHeaderP->file,
 		memHeaderP->line);
-        panic("Memory validation failure");
+	Tcl_Panic("Memory validation failure");
     }
 
     if (nukeGuards) {
-        memset ((char *) memHeaderP->low_guard, 0, LOW_GUARD_SIZE);
-        memset ((char *) hiPtr, 0, HIGH_GUARD_SIZE);
+	memset(memHeaderP->low_guard, 0, LOW_GUARD_SIZE);
+	memset(hiPtr, 0, HIGH_GUARD_SIZE);
     }
 
 }
@@ -281,10 +294,13 @@ ValidateMemory(memHeaderP, file, line, nukeGuards)
  *
  *----------------------------------------------------------------------
  */
+
 void
-Tcl_ValidateAllMemory (file, line)
-    CONST char  *file;	/* File from which Tcl_ValidateAllMemory was called */
-    int          line;	/* Line number of call to Tcl_ValidateAllMemory */
+Tcl_ValidateAllMemory(
+    CONST char *file,		/* File from which Tcl_ValidateAllMemory was
+				 * called. */
+    int line)			/* Line number of call to
+				 * Tcl_ValidateAllMemory */
 {
     struct mem_header *memScanP;
 
@@ -293,7 +309,7 @@ Tcl_ValidateAllMemory (file, line)
     }
     Tcl_MutexLock(ckallocMutexPtr);
     for (memScanP = allocHead; memScanP != NULL; memScanP = memScanP->flink) {
-        ValidateMemory(memScanP, file, line, FALSE);
+	ValidateMemory(memScanP, file, line, FALSE);
     }
     Tcl_MutexUnlock(ckallocMutexPtr);
 }
@@ -307,17 +323,19 @@ Tcl_ValidateAllMemory (file, line)
  *	information will be written to stderr.
  *
  * Results:
- *	Return TCL_ERROR if an error accessing the file occurs, `errno'
- *	will have the file error number left in it.
+ *	Return TCL_ERROR if an error accessing the file occurs, `errno' will
+ *	have the file error number left in it.
+ *
  *----------------------------------------------------------------------
  */
+
 int
-Tcl_DumpActiveMemory (fileName)
-    CONST char *fileName;		/* Name of the file to write info to */
+Tcl_DumpActiveMemory(
+    CONST char *fileName)	/* Name of the file to write info to */
 {
-    FILE              *fileP;
+    FILE *fileP;
     struct mem_header *memScanP;
-    char              *address;
+    char *address;
 
     if (fileName == NULL) {
 	fileP = stderr;
@@ -330,18 +348,18 @@ Tcl_DumpActiveMemory (fileName)
 
     Tcl_MutexLock(ckallocMutexPtr);
     for (memScanP = allocHead; memScanP != NULL; memScanP = memScanP->flink) {
-        address = &memScanP->body [0];
-        fprintf(fileP, "%8lx - %8lx  %7ld @ %s %d %s",
+	address = &memScanP->body [0];
+	fprintf(fileP, "%8lx - %8lx  %7ld @ %s %d %s",
 		(long unsigned int) address,
-                 (long unsigned int) address + memScanP->length - 1,
-		 memScanP->length, memScanP->file, memScanP->line,
-		 (memScanP->tagPtr == NULL) ? "" : memScanP->tagPtr->string);
+		(long unsigned int) address + memScanP->length - 1,
+		memScanP->length, memScanP->file, memScanP->line,
+		(memScanP->tagPtr == NULL) ? "" : memScanP->tagPtr->string);
 	(void) fputc('\n', fileP);
     }
     Tcl_MutexUnlock(ckallocMutexPtr);
 
     if (fileP != stderr) {
-	fclose (fileP);
+	fclose(fileP);
     }
     return TCL_OK;
 }
@@ -351,53 +369,54 @@ Tcl_DumpActiveMemory (fileName)
  *
  * Tcl_DbCkalloc - debugging ckalloc
  *
- *        Allocate the requested amount of space plus some extra for
- *        guard bands at both ends of the request, plus a size, panicing
- *        if there isn't enough space, then write in the guard bands
- *        and return the address of the space in the middle that the
- *        user asked for.
+ *	Allocate the requested amount of space plus some extra for guard bands
+ *	at both ends of the request, plus a size, panicing if there isn't
+ *	enough space, then write in the guard bands and return the address of
+ *	the space in the middle that the user asked for.
  *
- *        The second and third arguments are file and line, these contain
- *        the filename and line number corresponding to the caller.
- *        These are sent by the ckalloc macro; it uses the preprocessor
- *        autodefines __FILE__ and __LINE__.
+ *	The second and third arguments are file and line, these contain the
+ *	filename and line number corresponding to the caller. These are sent
+ *	by the ckalloc macro; it uses the preprocessor autodefines __FILE__
+ *	and __LINE__.
  *
  *----------------------------------------------------------------------
  */
+
 char *
-Tcl_DbCkalloc(size, file, line)
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_DbCkalloc(
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
     struct mem_header *result = NULL;
 
-    if (validate_memory)
-        Tcl_ValidateAllMemory (file, line);
-
+    if (validate_memory) {
+	Tcl_ValidateAllMemory(file, line);
+    }
 
     /* Don't let size argument to TclpAlloc overflow */
-    if (size <= UINT_MAX - HIGH_GUARD_SIZE - sizeof(struct mem_header)) {
+    if (size <= UINT_MAX - HIGH_GUARD_SIZE -sizeof(struct mem_header)) {
 	result = (struct mem_header *) TclpAlloc((unsigned)size +
 		sizeof(struct mem_header) + HIGH_GUARD_SIZE);
     }
     if (result == NULL) {
-        fflush(stdout);
-        TclDumpMemoryInfo(stderr);
-        panic("unable to alloc %u bytes, %s line %d", size, file, line);
+	fflush(stdout);
+	TclDumpMemoryInfo((ClientData) stderr, 0);
+	Tcl_Panic("unable to alloc %u bytes, %s line %d", size, file, line);
     }
 
     /*
-     * Fill in guard zones and size.  Also initialize the contents of
-     * the block with bogus bytes to detect uses of initialized data.
-     * Link into allocated list.
+     * Fill in guard zones and size. Also initialize the contents of the block
+     * with bogus bytes to detect uses of initialized data. Link into
+     * allocated list.
      */
+
     if (init_malloced_bodies) {
-        memset ((VOID *) result, GUARD_VALUE,
+	memset(result, GUARD_VALUE,
 		size + sizeof(struct mem_header) + HIGH_GUARD_SIZE);
     } else {
-	memset ((char *) result->low_guard, GUARD_VALUE, LOW_GUARD_SIZE);
-	memset (result->body + size, GUARD_VALUE, HIGH_GUARD_SIZE);
+	memset(result->low_guard, GUARD_VALUE, LOW_GUARD_SIZE);
+	memset(result->body + size, GUARD_VALUE, HIGH_GUARD_SIZE);
     }
     if (!ckallocInit) {
 	TclInitDbCkalloc();
@@ -413,56 +432,61 @@ Tcl_DbCkalloc(size, file, line)
     result->flink = allocHead;
     result->blink = NULL;
 
-    if (allocHead != NULL)
-        allocHead->blink = result;
+    if (allocHead != NULL) {
+	allocHead->blink = result;
+    }
     allocHead = result;
 
     total_mallocs++;
     if (trace_on_at_malloc && (total_mallocs >= trace_on_at_malloc)) {
-        (void) fflush(stdout);
-        fprintf(stderr, "reached malloc trace enable point (%d)\n",
-                total_mallocs);
-        fflush(stderr);
-        alloc_tracing = TRUE;
-        trace_on_at_malloc = 0;
+	(void) fflush(stdout);
+	fprintf(stderr, "reached malloc trace enable point (%d)\n",
+		total_mallocs);
+	fflush(stderr);
+	alloc_tracing = TRUE;
+	trace_on_at_malloc = 0;
     }
 
-    if (alloc_tracing)
-        fprintf(stderr,"ckalloc %lx %u %s %d\n",
+    if (alloc_tracing) {
+	fprintf(stderr,"ckalloc %lx %u %s %d\n",
 		(long unsigned int) result->body, size, file, line);
+    }
 
     if (break_on_malloc && (total_mallocs >= break_on_malloc)) {
-        break_on_malloc = 0;
-        (void) fflush(stdout);
-        fprintf(stderr,"reached malloc break limit (%d)\n",
-                total_mallocs);
-        fprintf(stderr, "program will now enter C debugger\n");
-        (void) fflush(stderr);
+	break_on_malloc = 0;
+	(void) fflush(stdout);
+	fprintf(stderr,"reached malloc break limit (%d)\n",
+		total_mallocs);
+	fprintf(stderr, "program will now enter C debugger\n");
+	(void) fflush(stderr);
 	abort();
     }
 
     current_malloc_packets++;
-    if (current_malloc_packets > maximum_malloc_packets)
-        maximum_malloc_packets = current_malloc_packets;
+    if (current_malloc_packets > maximum_malloc_packets) {
+	maximum_malloc_packets = current_malloc_packets;
+    }
     current_bytes_malloced += size;
-    if (current_bytes_malloced > maximum_bytes_malloced)
-        maximum_bytes_malloced = current_bytes_malloced;
+    if (current_bytes_malloced > maximum_bytes_malloced) {
+	maximum_bytes_malloced = current_bytes_malloced;
+    }
 
     Tcl_MutexUnlock(ckallocMutexPtr);
 
     return result->body;
 }
-
+
 char *
-Tcl_AttemptDbCkalloc(size, file, line)
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_AttemptDbCkalloc(
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
     struct mem_header *result = NULL;
 
-    if (validate_memory)
-        Tcl_ValidateAllMemory (file, line);
+    if (validate_memory) {
+	Tcl_ValidateAllMemory(file, line);
+    }
 
     /* Don't let size argument to TclpAlloc overflow */
     if (size <= UINT_MAX - HIGH_GUARD_SIZE - sizeof(struct mem_header)) {
@@ -470,22 +494,22 @@ Tcl_AttemptDbCkalloc(size, file, line)
 		sizeof(struct mem_header) + HIGH_GUARD_SIZE);
     }
     if (result == NULL) {
-        fflush(stdout);
-        TclDumpMemoryInfo(stderr);
+	fflush(stdout);
+	TclDumpMemoryInfo((ClientData) stderr, 0);
 	return NULL;
     }
 
     /*
-     * Fill in guard zones and size.  Also initialize the contents of
-     * the block with bogus bytes to detect uses of initialized data.
-     * Link into allocated list.
+     * Fill in guard zones and size. Also initialize the contents of the block
+     * with bogus bytes to detect uses of initialized data. Link into
+     * allocated list.
      */
     if (init_malloced_bodies) {
-        memset ((VOID *) result, GUARD_VALUE,
+	memset(result, GUARD_VALUE,
 		size + sizeof(struct mem_header) + HIGH_GUARD_SIZE);
     } else {
-	memset ((char *) result->low_guard, GUARD_VALUE, LOW_GUARD_SIZE);
-	memset (result->body + size, GUARD_VALUE, HIGH_GUARD_SIZE);
+	memset(result->low_guard, GUARD_VALUE, LOW_GUARD_SIZE);
+	memset(result->body + size, GUARD_VALUE, HIGH_GUARD_SIZE);
     }
     if (!ckallocInit) {
 	TclInitDbCkalloc();
@@ -501,71 +525,73 @@ Tcl_AttemptDbCkalloc(size, file, line)
     result->flink = allocHead;
     result->blink = NULL;
 
-    if (allocHead != NULL)
-        allocHead->blink = result;
+    if (allocHead != NULL) {
+	allocHead->blink = result;
+    }
     allocHead = result;
 
     total_mallocs++;
     if (trace_on_at_malloc && (total_mallocs >= trace_on_at_malloc)) {
-        (void) fflush(stdout);
-        fprintf(stderr, "reached malloc trace enable point (%d)\n",
-                total_mallocs);
-        fflush(stderr);
-        alloc_tracing = TRUE;
-        trace_on_at_malloc = 0;
+	(void) fflush(stdout);
+	fprintf(stderr, "reached malloc trace enable point (%d)\n",
+		total_mallocs);
+	fflush(stderr);
+	alloc_tracing = TRUE;
+	trace_on_at_malloc = 0;
     }
 
-    if (alloc_tracing)
-        fprintf(stderr,"ckalloc %lx %u %s %d\n",
+    if (alloc_tracing) {
+	fprintf(stderr,"ckalloc %lx %u %s %d\n",
 		(long unsigned int) result->body, size, file, line);
+    }
 
     if (break_on_malloc && (total_mallocs >= break_on_malloc)) {
-        break_on_malloc = 0;
-        (void) fflush(stdout);
-        fprintf(stderr,"reached malloc break limit (%d)\n",
-                total_mallocs);
-        fprintf(stderr, "program will now enter C debugger\n");
-        (void) fflush(stderr);
+	break_on_malloc = 0;
+	(void) fflush(stdout);
+	fprintf(stderr,"reached malloc break limit (%d)\n",
+		total_mallocs);
+	fprintf(stderr, "program will now enter C debugger\n");
+	(void) fflush(stderr);
 	abort();
     }
 
     current_malloc_packets++;
-    if (current_malloc_packets > maximum_malloc_packets)
-        maximum_malloc_packets = current_malloc_packets;
+    if (current_malloc_packets > maximum_malloc_packets) {
+	maximum_malloc_packets = current_malloc_packets;
+    }
     current_bytes_malloced += size;
-    if (current_bytes_malloced > maximum_bytes_malloced)
-        maximum_bytes_malloced = current_bytes_malloced;
+    if (current_bytes_malloced > maximum_bytes_malloced) {
+	maximum_bytes_malloced = current_bytes_malloced;
+    }
 
     Tcl_MutexUnlock(ckallocMutexPtr);
 
     return result->body;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_DbCkfree - debugging ckfree
  *
- *        Verify that the low and high guards are intact, and if so
- *        then free the buffer else panic.
+ *	Verify that the low and high guards are intact, and if so then free
+ *	the buffer else Tcl_Panic.
  *
- *        The guards are erased after being checked to catch duplicate
- *        frees.
+ *	The guards are erased after being checked to catch duplicate frees.
  *
- *        The second and third arguments are file and line, these contain
- *        the filename and line number corresponding to the caller.
- *        These are sent by the ckfree macro; it uses the preprocessor
- *        autodefines __FILE__ and __LINE__.
+ *	The second and third arguments are file and line, these contain the
+ *	filename and line number corresponding to the caller. These are sent
+ *	by the ckfree macro; it uses the preprocessor autodefines __FILE__ and
+ *	__LINE__.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DbCkfree(ptr, file, line)
-    char       *ptr;
-    CONST char *file;
-    int         line;
+Tcl_DbCkfree(
+    char *ptr,
+    CONST char *file,
+    int line)
 {
     struct mem_header *memp;
 
@@ -574,28 +600,28 @@ Tcl_DbCkfree(ptr, file, line)
     }
 
     /*
-     * The following cast is *very* tricky.  Must convert the pointer
-     * to an integer before doing arithmetic on it, because otherwise
-     * the arithmetic will be done differently (and incorrectly) on
-     * word-addressed machines such as Crays (will subtract only bytes,
-     * even though BODY_OFFSET is in words on these machines).
+     * The following cast is *very* tricky. Must convert the pointer to an
+     * integer before doing arithmetic on it, because otherwise the arithmetic
+     * will be done differently (and incorrectly) on word-addressed machines
+     * such as Crays (will subtract only bytes, even though BODY_OFFSET is in
+     * words on these machines).
      */
 
     memp = (struct mem_header *) (((size_t) ptr) - BODY_OFFSET);
 
     if (alloc_tracing) {
-        fprintf(stderr, "ckfree %lx %ld %s %d\n",
+	fprintf(stderr, "ckfree %lx %ld %s %d\n",
 		(long unsigned int) memp->body, memp->length, file, line);
     }
 
     if (validate_memory) {
-        Tcl_ValidateAllMemory(file, line);
+	Tcl_ValidateAllMemory(file, line);
     }
 
     Tcl_MutexLock(ckallocMutexPtr);
     ValidateMemory(memp, file, line, TRUE);
     if (init_malloced_bodies) {
-	memset((VOID *) ptr, GUARD_VALUE, (size_t) memp->length);
+	memset(ptr, GUARD_VALUE, (size_t) memp->length);
     }
 
     total_frees++;
@@ -612,12 +638,16 @@ Tcl_DbCkfree(ptr, file, line)
     /*
      * Delink from allocated list
      */
-    if (memp->flink != NULL)
-        memp->flink->blink = memp->blink;
-    if (memp->blink != NULL)
-        memp->blink->flink = memp->flink;
-    if (allocHead == memp)
-        allocHead = memp->flink;
+
+    if (memp->flink != NULL) {
+	memp->flink->blink = memp->blink;
+    }
+    if (memp->blink != NULL) {
+	memp->blink->flink = memp->flink;
+    }
+    if (allocHead == memp) {
+	allocHead = memp->flink;
+    }
     TclpFree((char *) memp);
     Tcl_MutexUnlock(ckallocMutexPtr);
 }
@@ -627,21 +657,22 @@ Tcl_DbCkfree(ptr, file, line)
  *
  * Tcl_DbCkrealloc - debugging ckrealloc
  *
- *	Reallocate a chunk of memory by allocating a new one of the
- *	right size, copying the old data to the new location, and then
- *	freeing the old memory space, using all the memory checking
- *	features of this package.
+ *	Reallocate a chunk of memory by allocating a new one of the right
+ *	size, copying the old data to the new location, and then freeing the
+ *	old memory space, using all the memory checking features of this
+ *	package.
  *
  *--------------------------------------------------------------------
  */
+
 char *
-Tcl_DbCkrealloc(ptr, size, file, line)
-    char        *ptr;
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_DbCkrealloc(
+    char *ptr,
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
-    char *new;
+    char *newPtr;
     unsigned int copySize;
     struct mem_header *memp;
 
@@ -650,8 +681,7 @@ Tcl_DbCkrealloc(ptr, size, file, line)
     }
 
     /*
-     * See comment from Tcl_DbCkfree before you change the following
-     * line.
+     * See comment from Tcl_DbCkfree before you change the following line.
      */
 
     memp = (struct mem_header *) (((size_t) ptr) - BODY_OFFSET);
@@ -660,20 +690,20 @@ Tcl_DbCkrealloc(ptr, size, file, line)
     if (copySize > (unsigned int) memp->length) {
 	copySize = memp->length;
     }
-    new = Tcl_DbCkalloc(size, file, line);
-    memcpy((VOID *) new, (VOID *) ptr, (size_t) copySize);
+    newPtr = Tcl_DbCkalloc(size, file, line);
+    memcpy(newPtr, ptr, (size_t) copySize);
     Tcl_DbCkfree(ptr, file, line);
-    return new;
+    return newPtr;
 }
-
+
 char *
-Tcl_AttemptDbCkrealloc(ptr, size, file, line)
-    char        *ptr;
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_AttemptDbCkrealloc(
+    char *ptr,
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
-    char *new;
+    char *newPtr;
     unsigned int copySize;
     struct mem_header *memp;
 
@@ -682,8 +712,7 @@ Tcl_AttemptDbCkrealloc(ptr, size, file, line)
     }
 
     /*
-     * See comment from Tcl_DbCkfree before you change the following
-     * line.
+     * See comment from Tcl_DbCkfree before you change the following line.
      */
 
     memp = (struct mem_header *) (((size_t) ptr) - BODY_OFFSET);
@@ -692,13 +721,13 @@ Tcl_AttemptDbCkrealloc(ptr, size, file, line)
     if (copySize > (unsigned int) memp->length) {
 	copySize = memp->length;
     }
-    new = Tcl_AttemptDbCkalloc(size, file, line);
-    if (new == NULL) {
+    newPtr = Tcl_AttemptDbCkalloc(size, file, line);
+    if (newPtr == NULL) {
 	return NULL;
     }
-    memcpy((VOID *) new, (VOID *) ptr, (size_t) copySize);
+    memcpy(newPtr, ptr, (size_t) copySize);
     Tcl_DbCkfree(ptr, file, line);
-    return new;
+    return newPtr;
 }
 
 
@@ -707,8 +736,8 @@ Tcl_AttemptDbCkrealloc(ptr, size, file, line)
  *
  * Tcl_Alloc, et al. --
  *
- *	These functions are defined in terms of the debugging versions
- *	when TCL_MEM_DEBUG is set.
+ *	These functions are defined in terms of the debugging versions when
+ *	TCL_MEM_DEBUG is set.
  *
  * Results:
  *	Same as the debug versions.
@@ -726,37 +755,37 @@ Tcl_AttemptDbCkrealloc(ptr, size, file, line)
 #undef Tcl_AttemptRealloc
 
 char *
-Tcl_Alloc(size)
-    unsigned int size;
+Tcl_Alloc(
+    unsigned int size)
 {
     return Tcl_DbCkalloc(size, "unknown", 0);
 }
 
 char *
-Tcl_AttemptAlloc(size)
-    unsigned int size;
+Tcl_AttemptAlloc(
+    unsigned int size)
 {
     return Tcl_AttemptDbCkalloc(size, "unknown", 0);
 }
 
 void
-Tcl_Free(ptr)
-    char *ptr;
+Tcl_Free(
+    char *ptr)
 {
     Tcl_DbCkfree(ptr, "unknown", 0);
 }
 
 char *
-Tcl_Realloc(ptr, size)
-    char *ptr;
-    unsigned int size;
+Tcl_Realloc(
+    char *ptr,
+    unsigned int size)
 {
     return Tcl_DbCkrealloc(ptr, size, "unknown", 0);
 }
 char *
-Tcl_AttemptRealloc(ptr, size)
-    char *ptr;
-    unsigned int size;
+Tcl_AttemptRealloc(
+    char *ptr,
+    unsigned int size)
 {
     return Tcl_AttemptDbCkrealloc(ptr, size, "unknown", 0);
 }
@@ -765,8 +794,9 @@ Tcl_AttemptRealloc(ptr, size)
  *----------------------------------------------------------------------
  *
  * MemoryCmd --
- *	Implements the Tcl "memory" command, which provides Tcl-level
- *	control of Tcl memory debugging information.
+ *
+ *	Implements the Tcl "memory" command, which provides Tcl-level control
+ *	of Tcl memory debugging information.
  *		memory active $file
  *		memory break_on_malloc $count
  *		memory info
@@ -778,33 +808,34 @@ Tcl_AttemptRealloc(ptr, size)
  *		memory validate on|off
  *
  * Results:
- *     Standard TCL results.
+ *	Standard TCL results.
  *
  *----------------------------------------------------------------------
  */
 	/* ARGSUSED */
 static int
-MemoryCmd (clientData, interp, argc, argv)
-    ClientData  clientData;
-    Tcl_Interp *interp;
-    int         argc;
-    CONST char  **argv;
+MemoryCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int argc,
+    CONST char *argv[])
 {
     CONST char *fileName;
+    FILE *fileP;
     Tcl_DString buffer;
     int result;
     size_t len;
 
     if (argc < 2) {
-	Tcl_AppendResult(interp, "wrong # args: should be \"",
-		argv[0], " option [args..]\"", (char *) NULL);
+	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		" option [args..]\"", NULL);
 	return TCL_ERROR;
     }
 
     if ((strcmp(argv[1],"active") == 0) || (strcmp(argv[1],"display") == 0)) {
-        if (argc != 3) {
-	    Tcl_AppendResult(interp, "wrong # args: should be \"",
-		    argv[0], " ", argv[1], " file\"", (char *) NULL);
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " ", argv[1], " file\"", NULL);
 	    return TCL_ERROR;
 	}
 	fileName = Tcl_TranslateFileName(interp, argv[2], &buffer);
@@ -814,43 +845,61 @@ MemoryCmd (clientData, interp, argc, argv)
 	result = Tcl_DumpActiveMemory (fileName);
 	Tcl_DStringFree(&buffer);
 	if (result != TCL_OK) {
-	    Tcl_AppendResult(interp, "error accessing ", argv[2],
-		    (char *) NULL);
+	    Tcl_AppendResult(interp, "error accessing ", argv[2], NULL);
 	    return TCL_ERROR;
 	}
 	return TCL_OK;
     }
     if (strcmp(argv[1],"break_on_malloc") == 0) {
-        if (argc != 3) {
-            goto argError;
+	if (argc != 3) {
+	    goto argError;
 	}
-        if (Tcl_GetInt(interp, argv[2], &break_on_malloc) != TCL_OK) {
+	if (Tcl_GetInt(interp, argv[2], &break_on_malloc) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-        return TCL_OK;
+	return TCL_OK;
     }
     if (strcmp(argv[1],"info") == 0) {
-	char buf[400];
-	sprintf(buf, "%-25s %10d\n%-25s %10d\n%-25s %10d\n%-25s %10d\n%-25s %10d\n%-25s %10d\n",
-	    "total mallocs", total_mallocs, "total frees", total_frees,
-	    "current packets allocated", current_malloc_packets,
-	    "current bytes allocated", current_bytes_malloced,
-	    "maximum packets allocated", maximum_malloc_packets,
-	    "maximum bytes allocated", maximum_bytes_malloced);
-	Tcl_SetResult(interp, buf, TCL_VOLATILE);
-        return TCL_OK;
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"%-25s %10d\n%-25s %10d\n%-25s %10d\n%-25s %10lu\n%-25s %10d\n%-25s %10lu\n",
+		"total mallocs", total_mallocs, "total frees", total_frees,
+		"current packets allocated", current_malloc_packets,
+		"current bytes allocated", current_bytes_malloced,
+		"maximum packets allocated", maximum_malloc_packets,
+		"maximum bytes allocated", maximum_bytes_malloced));
+	return TCL_OK;
     }
     if (strcmp(argv[1],"init") == 0) {
-        if (argc != 3) {
-            goto bad_suboption;
+	if (argc != 3) {
+	    goto bad_suboption;
+	}
+	init_malloced_bodies = (strcmp(argv[2],"on") == 0);
+	return TCL_OK;
+    }
+    if (strcmp(argv[1],"objs") == 0) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " objs file\"", NULL);
+	    return TCL_ERROR;
+	}
+	fileName = Tcl_TranslateFileName(interp, argv[2], &buffer);
+	if (fileName == NULL) {
+	    return TCL_ERROR;
+	}
+	fileP = fopen(fileName, "w");
+	if (fileP == NULL) {
+	    Tcl_AppendResult(interp, "cannot open output file", NULL);
+	    return TCL_ERROR;
 	}
-        init_malloced_bodies = (strcmp(argv[2],"on") == 0);
-        return TCL_OK;
+	TclDbDumpActiveObjects(fileP);
+	fclose(fileP);
+	Tcl_DStringFree(&buffer);
+	return TCL_OK;
     }
     if (strcmp(argv[1],"onexit") == 0) {
-        if (argc != 3) {
-	    Tcl_AppendResult(interp, "wrong # args: should be \"",
-		    argv[0], " onexit file\"", (char *) NULL);
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " onexit file\"", NULL);
 	    return TCL_ERROR;
 	}
 	fileName = Tcl_TranslateFileName(interp, argv[2], &buffer);
@@ -865,7 +914,7 @@ MemoryCmd (clientData, interp, argc, argv)
     if (strcmp(argv[1],"tag") == 0) {
 	if (argc != 3) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		    " tag string\"", (char *) NULL);
+		    " tag string\"", NULL);
 	    return TCL_ERROR;
 	}
 	if ((curTagPtr != NULL) && (curTagPtr->refCount == 0)) {
@@ -878,43 +927,43 @@ MemoryCmd (clientData, interp, argc, argv)
 	return TCL_OK;
     }
     if (strcmp(argv[1],"trace") == 0) {
-        if (argc != 3) {
-            goto bad_suboption;
+	if (argc != 3) {
+	    goto bad_suboption;
 	}
-        alloc_tracing = (strcmp(argv[2],"on") == 0);
-        return TCL_OK;
+	alloc_tracing = (strcmp(argv[2],"on") == 0);
+	return TCL_OK;
     }
 
     if (strcmp(argv[1],"trace_on_at_malloc") == 0) {
-        if (argc != 3) {
-            goto argError;
+	if (argc != 3) {
+	    goto argError;
 	}
-        if (Tcl_GetInt(interp, argv[2], &trace_on_at_malloc) != TCL_OK) {
+	if (Tcl_GetInt(interp, argv[2], &trace_on_at_malloc) != TCL_OK) {
 	    return TCL_ERROR;
 	}
 	return TCL_OK;
     }
     if (strcmp(argv[1],"validate") == 0) {
-        if (argc != 3) {
+	if (argc != 3) {
 	    goto bad_suboption;
 	}
-        validate_memory = (strcmp(argv[2],"on") == 0);
-        return TCL_OK;
+	validate_memory = (strcmp(argv[2],"on") == 0);
+	return TCL_OK;
     }
 
     Tcl_AppendResult(interp, "bad option \"", argv[1],
-	    "\": should be active, break_on_malloc, info, init, onexit, ",
-	    "tag, trace, trace_on_at_malloc, or validate", (char *) NULL);
+	    "\": should be active, break_on_malloc, info, init, onexit, "
+	    "tag, trace, trace_on_at_malloc, or validate", NULL);
     return TCL_ERROR;
 
-argError:
+  argError:
     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-	    " ", argv[1], " count\"", (char *) NULL);
+	    " ", argv[1], " count\"", NULL);
     return TCL_ERROR;
 
-bad_suboption:
+  bad_suboption:
     Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-	    " ", argv[1], " on|off\"", (char *) NULL);
+	    " ", argv[1], " on|off\"", NULL);
     return TCL_ERROR;
 }
 
@@ -923,10 +972,9 @@ bad_suboption:
  *
  * CheckmemCmd --
  *
- *	This is the command procedure for the "checkmem" command, which
- *	causes the application to exit after printing information about
- *	memory usage to the file passed to this command as its first
- *	argument.
+ *	This is the command procedure for the "checkmem" command, which causes
+ *	the application to exit after printing information about memory usage
+ *	to the file passed to this command as its first argument.
  *
  * Results:
  *	Returns a standard Tcl completion code.
@@ -938,15 +986,15 @@ bad_suboption:
  */
 
 static int
-CheckmemCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Interpreter for evaluation. */
-    int argc;				/* Number of arguments. */
-    CONST char *argv[];			/* String values of arguments. */
+CheckmemCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Interpreter for evaluation. */
+    int argc,			/* Number of arguments. */
+    CONST char *argv[])		/* String values of arguments. */
 {
     if (argc != 2) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" fileName\"", (char *) NULL);
+		" fileName\"", NULL);
 	return TCL_ERROR;
     }
     tclMemDumpFileName = dumpFile;
@@ -959,8 +1007,7 @@ CheckmemCmd(clientData, interp, argc, argv)
  *
  * Tcl_InitMemory --
  *
- *	Create the "memory" and "checkmem" commands in the given
- *	interpreter.
+ *	Create the "memory" and "checkmem" commands in the given interpreter.
  *
  * Results:
  *	None.
@@ -972,14 +1019,13 @@ CheckmemCmd(clientData, interp, argc, argv)
  */
 
 void
-Tcl_InitMemory(interp)
-    Tcl_Interp *interp;	/* Interpreter in which commands should be added */
+Tcl_InitMemory(
+    Tcl_Interp *interp)		/* Interpreter in which commands should be
+				 * added */
 {
     TclInitDbCkalloc();
-    Tcl_CreateCommand (interp, "memory", MemoryCmd, (ClientData) NULL,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "checkmem", CheckmemCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+    Tcl_CreateCommand(interp, "memory", MemoryCmd, (ClientData) NULL, NULL);
+    Tcl_CreateCommand(interp, "checkmem", CheckmemCmd, (ClientData) 0, NULL);
 }
 
 
@@ -996,47 +1042,50 @@ Tcl_InitMemory(interp)
  *----------------------------------------------------------------------
  *
  * Tcl_Alloc --
- *     Interface to TclpAlloc when TCL_MEM_DEBUG is disabled.  It does check
- *     that memory was actually allocated.
+ *
+ *	Interface to TclpAlloc when TCL_MEM_DEBUG is disabled. It does check
+ *	that memory was actually allocated.
  *
  *----------------------------------------------------------------------
  */
 
 char *
-Tcl_Alloc (size)
-    unsigned int size;
+Tcl_Alloc(
+    unsigned int size)
 {
     char *result;
 
     result = TclpAlloc(size);
+
     /*
-     * Most systems will not alloc(0), instead bumping it to one so
-     * that NULL isn't returned.  Some systems (AIX, Tru64) will alloc(0)
-     * by returning NULL, so we have to check that the NULL we get is
-     * not in response to alloc(0).
+     * Most systems will not alloc(0), instead bumping it to one so that NULL
+     * isn't returned. Some systems (AIX, Tru64) will alloc(0) by returning
+     * NULL, so we have to check that the NULL we get is not in response to
+     * alloc(0).
      *
-     * The ANSI spec actually says that systems either return NULL *or*
-     * a special pointer on failure, but we only check for NULL
+     * The ANSI spec actually says that systems either return NULL *or* a
+     * special pointer on failure, but we only check for NULL
      */
+
     if ((result == NULL) && size) {
-	panic("unable to alloc %u bytes", size);
+	Tcl_Panic("unable to alloc %u bytes", size);
     }
     return result;
 }
 
 char *
-Tcl_DbCkalloc(size, file, line)
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_DbCkalloc(
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
     char *result;
 
     result = (char *) TclpAlloc(size);
 
     if ((result == NULL) && size) {
-        fflush(stdout);
-        panic("unable to alloc %u bytes, %s line %d", size, file, line);
+	fflush(stdout);
+	Tcl_Panic("unable to alloc %u bytes, %s line %d", size, file, line);
     }
     return result;
 }
@@ -1045,15 +1094,16 @@ Tcl_DbCkalloc(size, file, line)
  *----------------------------------------------------------------------
  *
  * Tcl_AttemptAlloc --
- *     Interface to TclpAlloc when TCL_MEM_DEBUG is disabled.  It does not
- *     check that memory was actually allocated.
+ *
+ *	Interface to TclpAlloc when TCL_MEM_DEBUG is disabled. It does not
+ *	check that memory was actually allocated.
  *
  *----------------------------------------------------------------------
  */
 
 char *
-Tcl_AttemptAlloc (size)
-    unsigned int size;
+Tcl_AttemptAlloc(
+    unsigned int size)
 {
     char *result;
 
@@ -1062,57 +1112,57 @@ Tcl_AttemptAlloc (size)
 }
 
 char *
-Tcl_AttemptDbCkalloc(size, file, line)
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_AttemptDbCkalloc(
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
     char *result;
 
     result = (char *) TclpAlloc(size);
     return result;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_Realloc --
- *     Interface to TclpRealloc when TCL_MEM_DEBUG is disabled.  It does
- *     check that memory was actually allocated.
+ *
+ *	Interface to TclpRealloc when TCL_MEM_DEBUG is disabled. It does check
+ *	that memory was actually allocated.
  *
  *----------------------------------------------------------------------
  */
 
 char *
-Tcl_Realloc(ptr, size)
-    char *ptr;
-    unsigned int size;
+Tcl_Realloc(
+    char *ptr,
+    unsigned int size)
 {
     char *result;
 
     result = TclpRealloc(ptr, size);
 
     if ((result == NULL) && size) {
-	panic("unable to realloc %u bytes", size);
+	Tcl_Panic("unable to realloc %u bytes", size);
     }
     return result;
 }
 
 char *
-Tcl_DbCkrealloc(ptr, size, file, line)
-    char        *ptr;
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_DbCkrealloc(
+    char *ptr,
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
     char *result;
 
     result = (char *) TclpRealloc(ptr, size);
 
     if ((result == NULL) && size) {
-        fflush(stdout);
-        panic("unable to realloc %u bytes, %s line %d", size, file, line);
+	fflush(stdout);
+	Tcl_Panic("unable to realloc %u bytes, %s line %d", size, file, line);
     }
     return result;
 }
@@ -1121,16 +1171,17 @@ Tcl_DbCkrealloc(ptr, size, file, line)
  *----------------------------------------------------------------------
  *
  * Tcl_AttemptRealloc --
- *     Interface to TclpRealloc when TCL_MEM_DEBUG is disabled.  It does
- *     not check that memory was actually allocated.
+ *
+ *	Interface to TclpRealloc when TCL_MEM_DEBUG is disabled. It does not
+ *	check that memory was actually allocated.
  *
  *----------------------------------------------------------------------
  */
 
 char *
-Tcl_AttemptRealloc(ptr, size)
-    char *ptr;
-    unsigned int size;
+Tcl_AttemptRealloc(
+    char *ptr,
+    unsigned int size)
 {
     char *result;
 
@@ -1139,11 +1190,11 @@ Tcl_AttemptRealloc(ptr, size)
 }
 
 char *
-Tcl_AttemptDbCkrealloc(ptr, size, file, line)
-    char        *ptr;
-    unsigned int size;
-    CONST char  *file;
-    int          line;
+Tcl_AttemptDbCkrealloc(
+    char *ptr,
+    unsigned int size,
+    CONST char *file,
+    int line)
 {
     char *result;
 
@@ -1155,25 +1206,26 @@ Tcl_AttemptDbCkrealloc(ptr, size, file, line)
  *----------------------------------------------------------------------
  *
  * Tcl_Free --
- *     Interface to TclpFree when TCL_MEM_DEBUG is disabled.  Done here
- *     rather in the macro to keep some modules from being compiled with
- *     TCL_MEM_DEBUG enabled and some with it disabled.
+ *
+ *	Interface to TclpFree when TCL_MEM_DEBUG is disabled. Done here rather
+ *	in the macro to keep some modules from being compiled with
+ *	TCL_MEM_DEBUG enabled and some with it disabled.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_Free (ptr)
-    char *ptr;
+Tcl_Free(
+    char *ptr)
 {
     TclpFree(ptr);
 }
 
 void
-Tcl_DbCkfree(ptr, file, line)
-    char       *ptr;
-    CONST char *file;
-    int         line;
+Tcl_DbCkfree(
+    char *ptr,
+    CONST char *file,
+    int line)
 {
     TclpFree(ptr);
 }
@@ -1182,36 +1234,37 @@ Tcl_DbCkfree(ptr, file, line)
  *----------------------------------------------------------------------
  *
  * Tcl_InitMemory --
- *     Dummy initialization for memory command, which is only available
- *     if TCL_MEM_DEBUG is on.
+ *
+ *	Dummy initialization for memory command, which is only available if
+ *	TCL_MEM_DEBUG is on.
  *
  *----------------------------------------------------------------------
  */
 	/* ARGSUSED */
 void
-Tcl_InitMemory(interp)
-    Tcl_Interp *interp;
+Tcl_InitMemory(
+    Tcl_Interp *interp)
 {
 }
 
 int
-Tcl_DumpActiveMemory(fileName)
-    CONST char *fileName;
+Tcl_DumpActiveMemory(
+    CONST char *fileName)
 {
     return TCL_OK;
 }
 
 void
-Tcl_ValidateAllMemory(file, line)
-    CONST char *file;
-    int         line;
+Tcl_ValidateAllMemory(
+    CONST char *file,
+    int line)
 {
 }
 
-void
-TclDumpMemoryInfo(outFile)
-    FILE *outFile;
+int
+TclDumpMemoryInfo(ClientData clientData, int flags)
 {
+    return 1;
 }
 
 #endif	/* TCL_MEM_DEBUG */
@@ -1221,23 +1274,22 @@ TclDumpMemoryInfo(outFile)
  *
  * TclFinalizeMemorySubsystem --
  *
- *	This procedure is called to finalize all the structures that
- *	are used by the memory allocator on a per-process basis.
+ *	This procedure is called to finalize all the structures that are used
+ *	by the memory allocator on a per-process basis.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	This subsystem is self-initializing, since memory can be
- *	allocated before Tcl is formally initialized.  After this call,
- *	this subsystem has been reset to its initial state and is
- *	usable again.
+ *	This subsystem is self-initializing, since memory can be allocated
+ *	before Tcl is formally initialized. After this call, this subsystem
+ *	has been reset to its initial state and is usable again.
  *
  *---------------------------------------------------------------------------
  */
 
 void
-TclFinalizeMemorySubsystem()
+TclFinalizeMemorySubsystem(void)
 {
 #ifdef TCL_MEM_DEBUG
     if (tclMemDumpFileName != NULL) {
@@ -1245,12 +1297,15 @@ TclFinalizeMemorySubsystem()
     } else if (onExitMemDumpFileName != NULL) {
 	Tcl_DumpActiveMemory(onExitMemDumpFileName);
     }
+
     Tcl_MutexLock(ckallocMutexPtr);
+
     if (curTagPtr != NULL) {
 	TclpFree((char *) curTagPtr);
 	curTagPtr = NULL;
     }
     allocHead = NULL;
+
     Tcl_MutexUnlock(ckallocMutexPtr);
 #endif
 
@@ -1258,3 +1313,11 @@ TclFinalizeMemorySubsystem()
     TclFinalizeAllocSubsystem();
 #endif
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclClock.c b/generic/tclClock.c
index 2c00a07..5b95ae6 100644
--- a/generic/tclClock.c
+++ b/generic/tclClock.c
@@ -1,23 +1,136 @@
-/* 
+/*
  * tclClock.c --
  *
- *	Contains the time and date related commands.  This code
- *	is derived from the time and date facilities of TclX,
- *	by Mark Diekhans and Karl Lehenbauer.
+ *	Contains the time and date related commands. This code is derived from
+ *	the time and date facilities of TclX, by Mark Diekhans and Karl
+ *	Lehenbauer.
  *
  * Copyright 1991-1995 Karl Lehenbauer and Mark Diekhans.
  * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright (c) 2004 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include "tcl.h"
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * The date parsing stuff uses lexx and has tons o statics.
+ * Windows has mktime. The configurators do not check.
+ */
+
+#ifdef __WIN32__
+#define HAVE_MKTIME 1
+#endif
+
+/*
+ * Constants
+ */
+
+#define JULIAN_DAY_POSIX_EPOCH		2440588
+#define SECONDS_PER_DAY			86400
+#define JULIAN_SEC_POSIX_EPOCH	      (((Tcl_WideInt) JULIAN_DAY_POSIX_EPOCH) \
+					* SECONDS_PER_DAY)
+#define FOUR_CENTURIES			146097 /* days */
+#define JDAY_1_JAN_1_CE_JULIAN		1721424
+#define JDAY_1_JAN_1_CE_GREGORIAN	1721426
+#define ONE_CENTURY_GREGORIAN		36524  /* days */
+#define FOUR_YEARS			1461   /* days */
+#define ONE_YEAR			365    /* days */
+
+/*
+ * Table of the days in each month, leap and common years
+ */
+
+static const int hath[2][12] = {
+    {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
+    {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
+};
+static const int daysInPriorMonths[2][13] = {
+    {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
+    {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366}
+};
+
+/*
+ * Enumeration of the string literals used in [clock]
+ */
+
+typedef enum ClockLiteral {
+    LIT__NIL,
+    LIT__DEFAULT_FORMAT,
+    LIT_BCE,		LIT_C,			
+    LIT_CANNOT_USE_GMT_AND_TIMEZONE,
+    LIT_CE,
+    LIT_DAYOFMONTH,	LIT_DAYOFWEEK,		LIT_DAYOFYEAR,
+    LIT_ERA,		LIT_GMT,		LIT_GREGORIAN,
+    LIT_INTEGER_VALUE_TOO_LARGE,
+    LIT_ISO8601WEEK,	LIT_ISO8601YEAR,
+    LIT_JULIANDAY,	LIT_LOCALSECONDS,
+    LIT_MONTH,
+    LIT_SECONDS,	LIT_TZNAME,		LIT_TZOFFSET,
+    LIT_YEAR,
+    LIT__END
+} ClockLiteral;
+static const char *const literals[] = {
+    "",
+    "%a %b %d %H:%M:%S %Z %Y",
+    "BCE",		"C",			
+    "cannot use -gmt and -timezone in same call",
+    "CE",
+    "dayOfMonth",	"dayOfWeek",		"dayOfYear",
+    "era",		":GMT",			"gregorian",
+    "integer value too large to represent",
+    "iso8601Week",	"iso8601Year",
+    "julianDay",	"localSeconds",
+    "month",
+    "seconds",		"tzName",		"tzOffset",
+    "year"
+};
+
+/*
+ * Structure containing the client data for [clock]
+ */
+
+typedef struct ClockClientData {
+    int refCount;		/* Number of live references */
+    Tcl_Obj** literals;		/* Pool of object literals */
+} ClockClientData;
+
+/*
+ * Structure containing the fields used in [clock format] and [clock scan]
+ */
+
+typedef struct TclDateFields {
+    Tcl_WideInt seconds;	/* Time expressed in seconds from the Posix
+				 * epoch */
+    Tcl_WideInt localSeconds;	/* Local time expressed in nominal seconds
+				 * from the Posix epoch */
+    int tzOffset;		/* Time zone offset in seconds east of
+				 * Greenwich */
+    Tcl_Obj* tzName;		/* Time zone name */
+    int julianDay;		/* Julian Day Number in local time zone */
+    enum {BCE=1, CE=0} era;	/* Era */
+    int gregorian;		/* Flag == 1 if the date is Gregorian */
+    int year;			/* Year of the era */
+    int dayOfYear;		/* Day of the year (1 January == 1) */
+    int month;			/* Month number */
+    int dayOfMonth;		/* Day of the month */
+    int iso8601Year;		/* ISO8601 week-based year */
+    int iso8601Week;		/* ISO8601 week number */
+    int dayOfWeek;		/* Day of the week */
+} TclDateFields;
+static const char* eras[] = { "CE", "BCE", NULL };
+
+/*
+ * Thread specific data block holding a 'struct tm' for the 'gmtime' and
+ * 'localtime' library calls.
+ */
+
+static Tcl_ThreadDataKey tmKey;
+
+/*
+ * Mutex protecting 'gmtime', 'localtime' and 'mktime' calls and the statics
+ * in the date parsing code.
  */
 
 TCL_DECLARE_MUTEX(clockMutex)
@@ -26,366 +139,1914 @@ TCL_DECLARE_MUTEX(clockMutex)
  * Function prototypes for local procedures in this file:
  */
 
-static int		FormatClock _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_WideInt clockVal, int useGMT,
-			    char *format));
+static int		ConvertUTCToLocal(Tcl_Interp*,
+			    TclDateFields*, Tcl_Obj*, int);
+static int		ConvertUTCToLocalUsingTable(Tcl_Interp*,
+			    TclDateFields*, int, Tcl_Obj *const[]);
+static int		ConvertUTCToLocalUsingC(Tcl_Interp*,
+			    TclDateFields*, int);
+static int		ConvertLocalToUTC(Tcl_Interp*,
+			    TclDateFields*, Tcl_Obj*, int);
+static int		ConvertLocalToUTCUsingTable(Tcl_Interp*,
+			    TclDateFields*, int, Tcl_Obj *const[]);
+static int		ConvertLocalToUTCUsingC(Tcl_Interp*,
+			    TclDateFields*, int);
+static Tcl_Obj*		LookupLastTransition(Tcl_Interp*, Tcl_WideInt,
+			    int, Tcl_Obj *const *);
+static void		GetYearWeekDay(TclDateFields*, int);
+static void		GetGregorianEraYearDay(TclDateFields*, int);
+static void		GetMonthDay(TclDateFields*);
+static void		GetJulianDayFromEraYearWeekDay(TclDateFields*, int);
+static void		GetJulianDayFromEraYearMonthDay(TclDateFields*, int);
+static int		IsGregorianLeapYear(TclDateFields*);
+static int		WeekdayOnOrBefore(int, int);
+static int		ClockClicksObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockConvertlocaltoutcObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockGetdatefieldsObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockGetjuliandayfromerayearmonthdayObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockGetjuliandayfromerayearweekdayObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockGetenvObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockMicrosecondsObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockMillisecondsObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockParseformatargsObjCmd(
+			    ClientData clientData, Tcl_Interp* interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		ClockSecondsObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static struct tm *	ThreadSafeLocalTime(const time_t *);
+static void		TzsetIfNecessary(void);
+static void		ClockDeleteCmdProc(ClientData);
+
+/*
+ * Structure containing description of "native" clock commands to create.
+ */
+
+struct ClockCommand {
+    const char *name;		/* The tail of the command name. The full name
+				 * is "::tcl::clock::<name>". When NULL marks
+				 * the end of the table. */
+    Tcl_ObjCmdProc *objCmdProc;	/* Function that implements the command. This
+				 * will always have the ClockClientData sent
+				 * to it, but may well ignore this data. */
+};
+
+static const struct ClockCommand clockCommands[] = {
+    { "clicks",			ClockClicksObjCmd },
+    { "getenv",			ClockGetenvObjCmd },
+    { "microseconds",		ClockMicrosecondsObjCmd },
+    { "milliseconds",		ClockMillisecondsObjCmd },
+    { "seconds",		ClockSecondsObjCmd },
+    { "Oldscan",		TclClockOldscanObjCmd },
+    { "ConvertLocalToUTC",	ClockConvertlocaltoutcObjCmd },
+    { "GetDateFields",		ClockGetdatefieldsObjCmd },
+    { "GetJulianDayFromEraYearMonthDay",
+		ClockGetjuliandayfromerayearmonthdayObjCmd },
+    { "GetJulianDayFromEraYearWeekDay",
+    		ClockGetjuliandayfromerayearweekdayObjCmd },
+    { "ParseFormatArgs",	ClockParseformatargsObjCmd },
+    { NULL, NULL }
+};
 
 /*
- *-------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
- * Tcl_ClockObjCmd --
+ * TclClockInit --
  *
- *	This procedure is invoked to process the "clock" Tcl command.
- *	See the user documentation for details on what it does.
+ *	Registers the 'clock' subcommands with the Tcl interpreter and
+ *	initializes its client data (which consists mostly of constant
+ *	Tcl_Obj's that it is too much trouble to keep recreating).
  *
  * Results:
- *	A standard Tcl result.
+ *	None.
  *
  * Side effects:
- *	See the user documentation.
+ *	Installs the commands and creates the client data
  *
- *-------------------------------------------------------------------------
+ *----------------------------------------------------------------------
+ */
+
+void
+TclClockInit(
+    Tcl_Interp *interp)		/* Tcl interpreter */
+{
+    const struct ClockCommand *clockCmdPtr;
+    char cmdName[50];		/* Buffer large enough to hold the string
+				 *::tcl::clock::GetJulianDayFromEraYearMonthDay
+				 * plus a terminating NULL. */
+    ClockClientData *data;
+    int i;
+
+    /*
+     * Safe interps get [::clock] as alias to a master, so do not need their
+     * own copies of the support routines.
+     */
+
+    if (Tcl_IsSafe(interp)) {
+	return;
+    }
+
+    /*
+     * Create the client data, which is a refcounted literal pool.
+     */
+
+    data = (ClockClientData *) ckalloc(sizeof(ClockClientData));
+    data->refCount = 0;
+    data->literals = (Tcl_Obj**) ckalloc(LIT__END * sizeof(Tcl_Obj*));
+    for (i = 0; i < LIT__END; ++i) {
+	data->literals[i] = Tcl_NewStringObj(literals[i], -1);
+	Tcl_IncrRefCount(data->literals[i]);
+    }
+
+    /*
+     * Install the commands.
+     */
+
+    strcpy(cmdName, "::tcl::clock::");
+#define TCL_CLOCK_PREFIX_LEN 14 /* == strlen("::tcl::clock::") */
+    for (clockCmdPtr=clockCommands ; clockCmdPtr->name!=NULL ; clockCmdPtr++) {
+	strcpy(cmdName + TCL_CLOCK_PREFIX_LEN, clockCmdPtr->name);
+	data->refCount++;
+	Tcl_CreateObjCommand(interp, cmdName, clockCmdPtr->objCmdProc, data,
+		ClockDeleteCmdProc);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ClockConvertlocaltoutcObjCmd --
+ *
+ *	Tcl command that converts a UTC time to a local time by whatever means
+ *	is available.
+ *
+ * Usage:
+ *	::tcl::clock::ConvertUTCToLocal dictionary tzdata changeover
+ *
+ * Parameters:
+ *	dict - Dictionary containing a 'localSeconds' entry.
+ *	tzdata - Time zone data
+ *	changeover - Julian Day of the adoption of the Gregorian calendar.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	On success, sets the interpreter result to the given dictionary
+ *	augmented with a 'seconds' field giving the UTC time. On failure,
+ *	leaves an error message in the interpreter result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ClockConvertlocaltoutcObjCmd(
+    ClientData clientData,	/* Client data  */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const *objv)	/* Parameter vector */
+{
+    ClockClientData* data = (ClockClientData*) clientData;
+    Tcl_Obj* const * literals = data->literals;
+    Tcl_Obj* secondsObj;
+    Tcl_Obj* dict;
+    int changeover;
+    TclDateFields fields;
+    int created = 0;
+    int status;
+
+    /*
+     * Check params and convert time.
+     */
+
+    if (objc != 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dict tzdata changeover");
+	return TCL_ERROR;
+    }
+    dict = objv[1];
+    if (Tcl_DictObjGet(interp, dict, literals[LIT_LOCALSECONDS],
+		       &secondsObj)!= TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (secondsObj == NULL) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("key \"localseconds\" not "
+						  "found in dictionary", -1));
+	return TCL_ERROR;
+    }
+    if ((Tcl_GetWideIntFromObj(interp, secondsObj,
+			      &(fields.localSeconds)) != TCL_OK)
+	|| (TclGetIntFromObj(interp, objv[3], &changeover) != TCL_OK)
+	|| ConvertLocalToUTC(interp, &fields, objv[2], changeover)) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Copy-on-write; set the 'seconds' field in the dictionary and place the
+     * modified dictionary in the interpreter result.
+     */
+
+    if (Tcl_IsShared(dict)) {
+	dict = Tcl_DuplicateObj(dict);
+	created = 1;
+	Tcl_IncrRefCount(dict);
+    }
+    status = Tcl_DictObjPut(interp, dict, literals[LIT_SECONDS],
+	    Tcl_NewWideIntObj(fields.seconds));
+    if (status == TCL_OK) {
+	Tcl_SetObjResult(interp, dict);
+    }
+    if (created) {
+	Tcl_DecrRefCount(dict);
+    }
+    return status;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ClockGetdatefieldsObjCmd --
+ *
+ *	Tcl command that determines the values that [clock format] will use in
+ *	formatting a date, and populates a dictionary with them.
+ *
+ * Usage:
+ *	::tcl::clock::GetDateFields seconds tzdata changeover
+ *
+ * Parameters:
+ *	seconds - Time expressed in seconds from the Posix epoch.
+ *	tzdata - Time zone data of the time zone in which time is to
+ *                 be expressed.
+ *	changeover - Julian Day Number at which the current locale adopted
+ *		     the Gregorian calendar
+ *
+ * Results:
+ *	Returns a dictonary populated with the fields:
+ *		seconds - Seconds from the Posix epoch
+ *		localSeconds - Nominal seconds from the Posix epoch in
+ *			       the local time zone.
+ *		tzOffset - Time zone offset in seconds east of Greenwich
+ *		tzName - Time zone name
+ *		julianDay - Julian Day Number in the local time zone
+ *
+ *----------------------------------------------------------------------
  */
 
 int
-Tcl_ClockObjCmd (client, interp, objc, objv)
-    ClientData client;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument values. */
+ClockGetdatefieldsObjCmd(
+    ClientData clientData,	/* Opaque pointer to literal pool, etc. */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const *objv)	/* Parameter vector */
 {
-    Tcl_Obj *resultPtr;
-    int index;
-    Tcl_Obj *CONST *objPtr;
-    int useGMT = 0;
-    char *format = "%a %b %d %X %Z %Y";
-    int dummy;
-    Tcl_WideInt baseClock, clockVal;
-    long zone;
-    Tcl_Obj *baseObjPtr = NULL;
-    char *scanStr;
-    int n;
-    
-    static CONST char *switches[] =
-	{"clicks", "format", "scan", "seconds", (char *) NULL};
-    enum command { COMMAND_CLICKS, COMMAND_FORMAT, COMMAND_SCAN,
-		       COMMAND_SECONDS
-    };
-    static CONST char *formatSwitches[] = {"-format", "-gmt", (char *) NULL};
-    static CONST char *scanSwitches[] = {"-base", "-gmt", (char *) NULL};
+    TclDateFields fields;
+    Tcl_Obj* dict;
+    ClockClientData* data = (ClockClientData*) clientData;
+    Tcl_Obj* const * literals = data->literals;
+    int changeover;
+
+    /*
+     * Check params.
+     */
 
-    resultPtr = Tcl_GetObjResult(interp);
-    if (objc < 2) {
-	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
+    if (objc != 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "seconds tzdata changeover");
+	return TCL_ERROR;
+    }
+    if (Tcl_GetWideIntFromObj(interp, objv[1], &(fields.seconds)) != TCL_OK
+	    || TclGetIntFromObj(interp, objv[3], &changeover) != TCL_OK) {
 	return TCL_ERROR;
     }
 
-    if (Tcl_GetIndexFromObj(interp, objv[1], switches, "option", 0, &index)
-	    != TCL_OK) {
+    /* 
+     * fields.seconds could be an unsigned number that overflowed.  Make
+     * sure that it isn't.
+     */
+
+    if (objv[1]->typePtr == &tclBignumType) {
+	Tcl_SetObjResult(interp, literals[LIT_INTEGER_VALUE_TOO_LARGE]);
 	return TCL_ERROR;
     }
-    switch ((enum command) index) {
-	case COMMAND_CLICKS:	{		/* clicks */
-	    int forceMilli = 0;
-
-	    if (objc == 3) {
-		format = Tcl_GetStringFromObj(objv[2], &n);
-		if ( ( n >= 2 ) 
-		     && ( strncmp( format, "-milliseconds",
-				   (unsigned int) n) == 0 ) ) {
-		    forceMilli = 1;
-		} else {
-		    Tcl_AppendStringsToObj(resultPtr,
-			    "bad switch \"", format,
-			    "\": must be -milliseconds", (char *) NULL);
-		    return TCL_ERROR;
-		}
-	    } else if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, "?-milliseconds?");
-		return TCL_ERROR;
+
+    /*
+     * Convert UTC time to local.
+     */
+
+    if (ConvertUTCToLocal(interp, &fields, objv[2], changeover) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Extract Julian day.
+     */
+
+    fields.julianDay = (int) ((fields.localSeconds + JULIAN_SEC_POSIX_EPOCH)
+	    / SECONDS_PER_DAY);
+
+    /*
+     * Convert to Julian or Gregorian calendar.
+     */
+
+    GetGregorianEraYearDay(&fields, changeover);
+    GetMonthDay(&fields);
+    GetYearWeekDay(&fields, changeover);
+
+    dict = Tcl_NewDictObj();
+    Tcl_DictObjPut(NULL, dict, literals[LIT_LOCALSECONDS],
+	    Tcl_NewWideIntObj(fields.localSeconds));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_SECONDS],
+	    Tcl_NewWideIntObj(fields.seconds));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_TZNAME], fields.tzName);
+    Tcl_DecrRefCount(fields.tzName);
+    Tcl_DictObjPut(NULL, dict, literals[LIT_TZOFFSET],
+	    Tcl_NewIntObj(fields.tzOffset));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_JULIANDAY],
+	    Tcl_NewIntObj(fields.julianDay));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_GREGORIAN],
+	    Tcl_NewIntObj(fields.gregorian));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_ERA],
+	    literals[fields.era ? LIT_BCE : LIT_CE]);
+    Tcl_DictObjPut(NULL, dict, literals[LIT_YEAR],
+	    Tcl_NewIntObj(fields.year));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_DAYOFYEAR],
+	    Tcl_NewIntObj(fields.dayOfYear));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_MONTH],
+	    Tcl_NewIntObj(fields.month));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_DAYOFMONTH],
+	    Tcl_NewIntObj(fields.dayOfMonth));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_ISO8601YEAR],
+	    Tcl_NewIntObj(fields.iso8601Year));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_ISO8601WEEK],
+	    Tcl_NewIntObj(fields.iso8601Week));
+    Tcl_DictObjPut(NULL, dict, literals[LIT_DAYOFWEEK],
+	    Tcl_NewIntObj(fields.dayOfWeek));
+    Tcl_SetObjResult(interp, dict);
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ClockGetjuliandayfromerayearmonthdayObjCmd --
+ *
+ *	Tcl command that converts a time from era-year-month-day to a Julian
+ *	Day Number.
+ *
+ * Parameters:
+ *	dict - Dictionary that contains 'era', 'year', 'month' and
+ *	       'dayOfMonth' keys.
+ *	changeover - Julian Day of changeover to the Gregorian calendar
+ *
+ * Results:
+ *	Result is either TCL_OK, with the interpreter result being the
+ *	dictionary augmented with a 'julianDay' key, or TCL_ERROR,
+ *	with the result being an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ClockGetjuliandayfromerayearmonthdayObjCmd (
+    ClientData clientData,	/* Opaque pointer to literal pool, etc. */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const *objv)	/* Parameter vector */
+{
+    TclDateFields fields;
+    Tcl_Obj* dict;
+    ClockClientData* data = (ClockClientData*) clientData;
+    Tcl_Obj* const * literals = data->literals;
+    Tcl_Obj* fieldPtr;
+    int changeover;
+    int copied = 0;
+    int status;
+    int era = 0;
+
+    /*
+     * Check params.
+     */
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dict changeover");
+	return TCL_ERROR;
+    }
+    dict = objv[1];
+    if (Tcl_DictObjGet(interp, dict, literals[LIT_ERA], &fieldPtr) != TCL_OK
+	    || Tcl_GetIndexFromObj(interp, fieldPtr, eras, "era", TCL_EXACT,
+		&era) != TCL_OK
+	    || Tcl_DictObjGet(interp, dict, literals[LIT_YEAR],
+		&fieldPtr) != TCL_OK
+	    || TclGetIntFromObj(interp, fieldPtr, &(fields.year)) != TCL_OK
+	    || Tcl_DictObjGet(interp, dict, literals[LIT_MONTH],
+		&fieldPtr) != TCL_OK
+	    || TclGetIntFromObj(interp, fieldPtr, &(fields.month)) != TCL_OK
+	    || Tcl_DictObjGet(interp, dict, literals[LIT_DAYOFMONTH],
+		&fieldPtr) != TCL_OK
+	    || TclGetIntFromObj(interp, fieldPtr,
+		&(fields.dayOfMonth)) != TCL_OK
+	    || TclGetIntFromObj(interp, objv[2], &changeover) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    fields.era = era;
+
+    /*
+     * Get Julian day.
+     */
+
+    GetJulianDayFromEraYearMonthDay(&fields, changeover);
+
+    /*
+     * Store Julian day in the dictionary - copy on write.
+     */
+
+    if (Tcl_IsShared(dict)) {
+	dict = Tcl_DuplicateObj(dict);
+	Tcl_IncrRefCount(dict);
+	copied = 1;
+    }
+    status = Tcl_DictObjPut(interp, dict, literals[LIT_JULIANDAY],
+	    Tcl_NewIntObj(fields.julianDay));
+    if (status == TCL_OK) {
+	Tcl_SetObjResult(interp, dict);
+    }
+    if (copied) {
+	Tcl_DecrRefCount(dict);
+    }
+    return status;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ClockGetjuliandayfromerayearweekdayObjCmd --
+ *
+ *	Tcl command that converts a time from the ISO calendar to a Julian Day
+ *	Number.
+ *
+ * Parameters:
+ *	dict - Dictionary that contains 'era', 'iso8601Year', 'iso8601Week'
+ *	       and 'dayOfWeek' keys.
+ *	changeover - Julian Day of changeover to the Gregorian calendar
+ *
+ * Results:
+ *	Result is either TCL_OK, with the interpreter result being the
+ *	dictionary augmented with a 'julianDay' key, or TCL_ERROR, with the
+ *	result being an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ClockGetjuliandayfromerayearweekdayObjCmd (
+    ClientData clientData,	/* Opaque pointer to literal pool, etc. */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const *objv)	/* Parameter vector */
+{
+    TclDateFields fields;
+    Tcl_Obj* dict;
+    ClockClientData* data = (ClockClientData*) clientData;
+    Tcl_Obj* const * literals = data->literals;
+    Tcl_Obj* fieldPtr;
+    int changeover;
+    int copied = 0;
+    int status;
+    int era = 0;
+
+    /*
+     * Check params.
+     */
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dict changeover");
+	return TCL_ERROR;
+    }
+    dict = objv[1];
+    if (Tcl_DictObjGet(interp, dict, literals[LIT_ERA], &fieldPtr) != TCL_OK
+	    || Tcl_GetIndexFromObj(interp, fieldPtr, eras, "era", TCL_EXACT,
+		&era) != TCL_OK
+	    || Tcl_DictObjGet(interp, dict, literals[LIT_ISO8601YEAR],
+		&fieldPtr) != TCL_OK
+	    || TclGetIntFromObj(interp, fieldPtr,
+		&(fields.iso8601Year)) != TCL_OK
+	    || Tcl_DictObjGet(interp, dict, literals[LIT_ISO8601WEEK],
+		&fieldPtr) != TCL_OK
+	    || TclGetIntFromObj(interp, fieldPtr,
+		&(fields.iso8601Week)) != TCL_OK
+	    || Tcl_DictObjGet(interp, dict, literals[LIT_DAYOFWEEK],
+		&fieldPtr) != TCL_OK
+	    || TclGetIntFromObj(interp, fieldPtr,
+		&(fields.dayOfWeek)) != TCL_OK
+	    || TclGetIntFromObj(interp, objv[2], &changeover) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    fields.era = era;
+
+    /*
+     * Get Julian day.
+     */
+
+    GetJulianDayFromEraYearWeekDay(&fields, changeover);
+
+    /*
+     * Store Julian day in the dictionary - copy on write.
+     */
+
+    if (Tcl_IsShared(dict)) {
+	dict = Tcl_DuplicateObj(dict);
+	Tcl_IncrRefCount(dict);
+	copied = 1;
+    }
+    status = Tcl_DictObjPut(interp, dict, literals[LIT_JULIANDAY],
+	    Tcl_NewIntObj(fields.julianDay));
+    if (status == TCL_OK) {
+	Tcl_SetObjResult(interp, dict);
+    }
+    if (copied) {
+	Tcl_DecrRefCount(dict);
+    }
+    return status;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConvertLocalToUTC --
+ *
+ *	Converts a time (in a TclDateFields structure) from the local wall
+ *	clock to UTC.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	Populates the 'seconds' field if successful; stores an error message
+ *	in the interpreter result on failure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConvertLocalToUTC(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    TclDateFields* fields,	/* Fields of the time */
+    Tcl_Obj* tzdata,		/* Time zone data */
+    int changeover)		/* Julian Day of the Gregorian transition */
+{
+    int rowc;			/* Number of rows in tzdata */
+    Tcl_Obj** rowv;		/* Pointers to the rows */
+
+    /*
+     * Unpack the tz data.
+     */
+
+    if (TclListObjGetElements(interp, tzdata, &rowc, &rowv) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Special case: If the time zone is :localtime, the tzdata will be empty.
+     * Use 'mktime' to convert the time to local
+     */
+
+    if (rowc == 0) {
+	return ConvertLocalToUTCUsingC(interp, fields, changeover);
+    } else {
+	return ConvertLocalToUTCUsingTable(interp, fields, rowc, rowv);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConvertLocalToUTCUsingTable --
+ *
+ *	Converts a time (in a TclDateFields structure) from local time in a
+ *	given time zone to UTC.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	Stores an error message in the interpreter if an error occurs; if
+ *	successful, stores the 'seconds' field in 'fields.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConvertLocalToUTCUsingTable(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    TclDateFields* fields,	/* Time to convert, with 'seconds' filled in */
+    int rowc,			/* Number of points at which time changes */
+    Tcl_Obj *const rowv[])	/* Points at which time changes */
+{
+    Tcl_Obj* row;
+    int cellc;
+    Tcl_Obj** cellv;
+    int have[8];
+    int nHave = 0;
+    int i;
+    int found;
+
+    /*
+     * Perform an initial lookup assuming that local == UTC, and locate the
+     * last time conversion prior to that time. Get the offset from that row,
+     * and look up again. Continue until we find an offset that we found
+     * before. This definition, rather than "the same offset" ensures that we
+     * don't enter an endless loop, as would otherwise happen when trying to
+     * convert a non-existent time such as 02:30 during the US Spring Daylight
+     * Saving Time transition.
+     */
+
+    found = 0;
+    fields->tzOffset = 0;
+    fields->seconds = fields->localSeconds;
+    while (!found) {
+	row = LookupLastTransition(interp, fields->seconds, rowc, rowv);
+	if ((row == NULL)
+		|| TclListObjGetElements(interp, row, &cellc,
+		    &cellv) != TCL_OK
+		|| TclGetIntFromObj(interp, cellv[1],
+		    &(fields->tzOffset)) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	found = 0;
+	for (i = 0; !found && i < nHave; ++i) {
+	    if (have[i] == fields->tzOffset) {
+		found = 1;
+		break;
 	    }
-	    if (forceMilli) {
-		/*
-		 * We can enforce at least millisecond granularity
-		 */
-		Tcl_Time time;
-		Tcl_GetTime(&time);
-		Tcl_SetLongObj(resultPtr,
-			(long) (time.sec*1000 + time.usec/1000));
-	    } else {
-		Tcl_SetLongObj(resultPtr, (long) TclpGetClicks());
+	}
+	if (!found) {
+	    if (nHave == 8) {
+		Tcl_Panic("loop in ConvertLocalToUTCUsingTable");
 	    }
-	    return TCL_OK;
+	    have[nHave] = fields->tzOffset;
+	    ++nHave;
 	}
+	fields->seconds = fields->localSeconds - fields->tzOffset;
+    }
+    fields->tzOffset = have[i];
+    fields->seconds = fields->localSeconds - fields->tzOffset;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConvertLocalToUTCUsingC --
+ *
+ *	Converts a time from local wall clock to UTC when the local time zone
+ *	cannot be determined. Uses 'mktime' to do the job.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	Stores an error message in the interpreter if an error occurs; if
+ *	successful, stores the 'seconds' field in 'fields.
+ *
+ *----------------------------------------------------------------------
+ */
 
-	case COMMAND_FORMAT:			/* format */
-	    if ((objc < 3) || (objc > 7)) {
-		wrongFmtArgs:
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"clockval ?-format string? ?-gmt boolean?");
-		return TCL_ERROR;
-	    }
+static int
+ConvertLocalToUTCUsingC(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    TclDateFields* fields,	/* Time to convert, with 'seconds' filled in */
+    int changeover)		/* Julian Day of the Gregorian transition */
+{
+    struct tm timeVal;
+    int localErrno;
+    int secondOfDay;
+    Tcl_WideInt jsec;
 
-	    if (Tcl_GetWideIntFromObj(interp, objv[2], &clockVal)
-		    != TCL_OK) {
-		return TCL_ERROR;
-	    }
-    
-	    objPtr = objv+3;
-	    objc -= 3;
-	    while (objc > 1) {
-		if (Tcl_GetIndexFromObj(interp, objPtr[0], formatSwitches,
-			"switch", 0, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		switch (index) {
-		    case 0:		/* -format */
-			format = Tcl_GetStringFromObj(objPtr[1], &dummy);
-			break;
-		    case 1:		/* -gmt */
-			if (Tcl_GetBooleanFromObj(interp, objPtr[1],
-				&useGMT) != TCL_OK) {
-			    return TCL_ERROR;
-			}
-			break;
-		}
-		objPtr += 2;
-		objc -= 2;
-	    }
-	    if (objc != 0) {
-		goto wrongFmtArgs;
-	    }
-	    return FormatClock(interp, clockVal, useGMT,
-		    format);
-
-	case COMMAND_SCAN:			/* scan */
-	    if ((objc < 3) || (objc > 7)) {
-		wrongScanArgs:
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"dateString ?-base clockValue? ?-gmt boolean?");
-		return TCL_ERROR;
-	    }
+    /*
+     * Convert the given time to a date.
+     */
 
-	    objPtr = objv+3;
-	    objc -= 3;
-	    while (objc > 1) {
-		if (Tcl_GetIndexFromObj(interp, objPtr[0], scanSwitches,
-			"switch", 0, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		switch (index) {
-		    case 0:		/* -base */
-			baseObjPtr = objPtr[1];
-			break;
-		    case 1:		/* -gmt */
-			if (Tcl_GetBooleanFromObj(interp, objPtr[1],
-				&useGMT) != TCL_OK) {
-			    return TCL_ERROR;
-			}
-			break;
-		}
-		objPtr += 2;
-		objc -= 2;
-	    }
-	    if (objc != 0) {
-		goto wrongScanArgs;
-	    }
+    jsec = fields->localSeconds + JULIAN_SEC_POSIX_EPOCH;
+    fields->julianDay = (int) (jsec / SECONDS_PER_DAY);
+    secondOfDay = (int)(jsec % SECONDS_PER_DAY);
+    if (secondOfDay < 0) {
+	secondOfDay += SECONDS_PER_DAY;
+	--fields->julianDay;
+    }
+    GetGregorianEraYearDay(fields, changeover);
+    GetMonthDay(fields);
 
-	    if (baseObjPtr != NULL) {
-		if (Tcl_GetWideIntFromObj(interp, baseObjPtr,
-					  &baseClock) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-	    } else {
-		baseClock = TclpGetSeconds();
-	    }
+    /*
+     * Convert the date/time to a 'struct tm'.
+     */
 
-	    if (useGMT) {
-		zone = -50000; /* Force GMT */
-	    } else {
-		zone = TclpGetTimeZone(baseClock);
-	    }
+    timeVal.tm_year = fields->year - 1900;
+    timeVal.tm_mon = fields->month - 1;
+    timeVal.tm_mday = fields->dayOfMonth;
+    timeVal.tm_hour = (secondOfDay / 3600) % 24;
+    timeVal.tm_min = (secondOfDay / 60) % 60;
+    timeVal.tm_sec = secondOfDay % 60;
+    timeVal.tm_isdst = -1;
+    timeVal.tm_wday = -1;
+    timeVal.tm_yday = -1;
 
-	    scanStr = Tcl_GetStringFromObj(objv[2], &dummy);
-	    Tcl_MutexLock(&clockMutex);
-	    if (TclGetDate(scanStr, baseClock, zone,
-		    &clockVal) < 0) {
-		Tcl_MutexUnlock(&clockMutex);
-		Tcl_AppendStringsToObj(resultPtr,
-			"unable to convert date-time string \"",
-			scanStr, "\"", (char *) NULL);
-		return TCL_ERROR;
-	    }
-	    Tcl_MutexUnlock(&clockMutex);
+    /*
+     * Get local time. It is rumored that mktime is not thread safe on some
+     * platforms, so seize a mutex before attempting this.
+     */
 
-	    Tcl_SetWideIntObj(resultPtr, clockVal);
-	    return TCL_OK;
+    TzsetIfNecessary();
+    Tcl_MutexLock(&clockMutex);
+    errno = 0;
+    fields->seconds = (Tcl_WideInt) mktime(&timeVal);
+    localErrno = errno;
+    Tcl_MutexUnlock(&clockMutex);
 
-	case COMMAND_SECONDS:			/* seconds */
-	    if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-	    Tcl_SetLongObj(resultPtr, (long) TclpGetSeconds());
-	    return TCL_OK;
-	default:
-	    return TCL_ERROR;	/* Should never be reached. */
+    /*
+     * If conversion fails, report an error.
+     */
+
+    if (localErrno != 0
+	    || (fields->seconds == -1 && timeVal.tm_yday == -1)) {
+	Tcl_SetResult(interp, "time value too large/small to represent",
+		TCL_STATIC);
+	return TCL_ERROR;
     }
+    return TCL_OK;
 }
 
 /*
- *-----------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
- * FormatClock --
+ * ConvertUTCToLocal --
  *
- *      Formats a time value based on seconds into a human readable
- *	string.
+ *	Converts a time (in a TclDateFields structure) from UTC to local time.
  *
  * Results:
- *      Standard Tcl result.
+ *	Returns a standard Tcl result.
  *
  * Side effects:
- *      None.
+ *	Populates the 'tzName' and 'tzOffset' fields.
  *
- *-----------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 static int
-FormatClock(interp, clockVal, useGMT, format)
-    Tcl_Interp *interp;			/* Current interpreter. */
-    Tcl_WideInt clockVal;	       	/* Time in seconds. */
-    int useGMT;				/* Boolean */
-    char *format;			/* Format string */
+ConvertUTCToLocal(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    TclDateFields* fields,	/* Fields of the time */
+    Tcl_Obj* tzdata,		/* Time zone data */
+    int changeover)		/* Julian Day of the Gregorian transition */
 {
-    struct tm *timeDataPtr;
-    Tcl_DString buffer, uniBuffer;
-    int bufSize;
-    char *p;
-    int result;
-    time_t tclockVal;
-#if !defined(HAVE_TM_ZONE) && !defined(WIN32)
-    TIMEZONE_t savedTimeZone = 0;	/* lint. */
-    char *savedTZEnv = NULL;		/* lint. */
-#endif
+    int rowc;			/* Number of rows in tzdata */
+    Tcl_Obj** rowv;		/* Pointers to the rows */
 
-#ifdef HAVE_TZSET
     /*
-     * Some systems forgot to call tzset in localtime, make sure its done.
+     * Unpack the tz data.
      */
-    static int  calledTzset = 0;
 
-    Tcl_MutexLock(&clockMutex);
-    if (!calledTzset) {
-        tzset();
-        calledTzset = 1;
+    if (TclListObjGetElements(interp, tzdata, &rowc, &rowv) != TCL_OK) {
+	return TCL_ERROR;
     }
-    Tcl_MutexUnlock(&clockMutex);
-#endif
 
     /*
-     * If the user gave us -format "", just return now
+     * Special case: If the time zone is :localtime, the tzdata will be empty.
+     * Use 'localtime' to convert the time to local
+     */
+
+    if (rowc == 0) {
+	return ConvertUTCToLocalUsingC(interp, fields, changeover);
+    } else {
+	return ConvertUTCToLocalUsingTable(interp, fields, rowc, rowv);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConvertUTCToLocalUsingTable --
+ *
+ *	Converts UTC to local time, given a table of transition points
+ *
+ * Results:
+ *	Returns a standard Tcl result
+ *
+ * Side effects:
+ *	On success, fills fields->tzName, fields->tzOffset and
+ *	fields->localSeconds. On failure, places an error message in the
+ *	interpreter result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConvertUTCToLocalUsingTable(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    TclDateFields* fields,	/* Fields of the date */
+    int rowc,			/* Number of rows in the conversion table
+				 * (>= 1) */
+    Tcl_Obj *const rowv[])	/* Rows of the conversion table */
+{
+    Tcl_Obj* row;		/* Row containing the current information */
+    int cellc;			/* Count of cells in the row (must be 4) */
+    Tcl_Obj** cellv;		/* Pointers to the cells */
+
+    /*
+     * Look up the nearest transition time.
+     */
+
+    row = LookupLastTransition(interp, fields->seconds, rowc, rowv);
+    if (row == NULL ||
+	    TclListObjGetElements(interp, row, &cellc, &cellv) != TCL_OK ||
+	    TclGetIntFromObj(interp,cellv[1],&(fields->tzOffset)) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Convert the time.
+     */
+
+    fields->tzName = cellv[3];
+    Tcl_IncrRefCount(fields->tzName);
+    fields->localSeconds = fields->seconds + fields->tzOffset;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConvertUTCToLocalUsingC --
+ *
+ *	Converts UTC to localtime in cases where the local time zone is not
+ *	determinable, using the C 'localtime' function to do it.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	On success, fills fields->tzName, fields->tzOffset and
+ *	fields->localSeconds. On failure, places an error message in the
+ *	interpreter result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConvertUTCToLocalUsingC(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    TclDateFields* fields,	/* Time to convert, with 'seconds' filled in */
+    int changeover)		/* Julian Day of the Gregorian transition */
+{
+    time_t tock;
+    struct tm* timeVal;		/* Time after conversion */
+    int diff;			/* Time zone diff local-Greenwich */
+    char buffer[8];		/* Buffer for time zone name */
+
+    /*
+     * Use 'localtime' to determine local year, month, day, time of day.
+     */
+
+    tock = (time_t) fields->seconds;
+    if ((Tcl_WideInt) tock != fields->seconds) {
+	Tcl_AppendResult(interp,
+		"number too large to represent as a Posix time", NULL);
+	Tcl_SetErrorCode(interp, "CLOCK", "argTooLarge", NULL);
+	return TCL_ERROR;
+    }
+    TzsetIfNecessary();
+    timeVal = ThreadSafeLocalTime(&tock);
+    if (timeVal == NULL) {
+	Tcl_AppendResult(interp,
+		"localtime failed (clock value may be too "
+		"large/small to represent)", NULL);
+	Tcl_SetErrorCode(interp, "CLOCK", "localtimeFailed", NULL);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Fill in the date in 'fields' and use it to derive Julian Day.
+     */
+
+    fields->era = CE;
+    fields->year = timeVal->tm_year + 1900;
+    fields->month = timeVal->tm_mon + 1;
+    fields->dayOfMonth = timeVal->tm_mday;
+    GetJulianDayFromEraYearMonthDay(fields, changeover);
+
+    /*
+     * Convert that value to seconds.
+     */
+
+    fields->localSeconds = (((fields->julianDay * (Tcl_WideInt) 24
+	    + timeVal->tm_hour) * 60 + timeVal->tm_min) * 60
+	    + timeVal->tm_sec) - JULIAN_SEC_POSIX_EPOCH;
+
+    /*
+     * Determine a time zone offset and name; just use +hhmm for the name.
+     */
+
+    diff = (int) (fields->localSeconds - fields->seconds);
+    fields->tzOffset = diff;
+    if (diff < 0) {
+	*buffer = '-';
+	diff = -diff;
+    } else {
+	*buffer = '+';
+    }
+    sprintf(buffer+1, "%02d", diff / 3600);
+    diff %= 3600;
+    sprintf(buffer+3, "%02d", diff / 60);
+    diff %= 60;
+    if (diff > 0) {
+	sprintf(buffer+5, "%02d", diff);
+    }
+    fields->tzName = Tcl_NewStringObj(buffer, -1);
+    Tcl_IncrRefCount(fields->tzName);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * LookupLastTransition --
+ *
+ *	Given a UTC time and a tzdata array, looks up the last transition on
+ *	or before the given time.
+ *
+ * Results:
+ *	Returns a pointer to the row, or NULL if an error occurs.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj*
+LookupLastTransition(
+    Tcl_Interp* interp,		/* Interpreter for error messages */
+    Tcl_WideInt tick,		/* Time from the epoch */
+    int rowc,			/* Number of rows of tzdata */
+    Tcl_Obj *const *rowv)	/* Rows in tzdata */
+{
+    int l;
+    int u;
+    Tcl_Obj* compObj;
+    Tcl_WideInt compVal;
+
+    /*
+     * Examine the first row to make sure we're in bounds.
      */
-    if (*format == '\0') {
-	return TCL_OK;
+
+    if (Tcl_ListObjIndex(interp, rowv[0], 0, &compObj) != TCL_OK
+	    || Tcl_GetWideIntFromObj(interp, compObj, &compVal) != TCL_OK) {
+	return NULL;
+    }
+
+    /*
+     * Bizarre case - first row doesn't begin at MIN_WIDE_INT. Return it
+     * anyway.
+     */
+
+    if (tick < compVal) {
+	return rowv[0];
     }
 
-#if !defined(HAVE_TM_ZONE) && !defined(WIN32)
     /*
-     * This is a kludge for systems not having the timezone string in
-     * struct tm.  No matter what was specified, they use the local
-     * timezone string.  Since this kludge requires fiddling with the
-     * TZ environment variable, it will mess up if done on multiple
-     * threads at once.  Protect it with a the clock mutex.
+     * Binary-search to find the transition.
      */
 
-    Tcl_MutexLock( &clockMutex );
-    if (useGMT) {
-        CONST char *varValue;
+    l = 0;
+    u = rowc-1;
+    while (l < u) {
+	int m = (l + u + 1) / 2;
 
-        varValue = Tcl_GetVar2(interp, "env", "TZ", TCL_GLOBAL_ONLY);
-        if (varValue != NULL) {
-	    savedTZEnv = strcpy(ckalloc(strlen(varValue) + 1), varValue);
-        } else {
-            savedTZEnv = NULL;
+	if (Tcl_ListObjIndex(interp, rowv[m], 0, &compObj) != TCL_OK ||
+		Tcl_GetWideIntFromObj(interp, compObj, &compVal) != TCL_OK) {
+	    return NULL;
+	}
+	if (tick >= compVal) {
+	    l = m;
+	} else {
+	    u = m-1;
 	}
-        Tcl_SetVar2(interp, "env", "TZ", "GMT0", TCL_GLOBAL_ONLY);
-        savedTimeZone = timezone;
-        timezone = 0;
-        tzset();
     }
-#endif
+    return rowv[l];
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetYearWeekDay --
+ *
+ *	Given a date with Julian Calendar Day, compute the year, week, and day
+ *	in the ISO8601 calendar.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Stores 'iso8601Year', 'iso8601Week' and 'dayOfWeek' in the date
+ *	fields.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+GetYearWeekDay(
+    TclDateFields* fields,	/* Date to convert, must have 'julianDay' */
+    int changeover)		/* Julian Day Number of the Gregorian
+				 * transition */
+{
+    TclDateFields temp;
+    int dayOfFiscalYear;
 
-    tclockVal = (time_t) clockVal;
-    timeDataPtr = TclpGetDate((TclpTime_t) &tclockVal, useGMT);
-    
     /*
-     * Make a guess at the upper limit on the substituted string size
-     * based on the number of percents in the string.
+     * Find the given date, minus three days, plus one year. That date's
+     * iso8601 year is an upper bound on the ISO8601 year of the given date.
      */
 
-    for (bufSize = 1, p = format; *p != '\0'; p++) {
-	if (*p == '%') {
-	    bufSize += 40;
-	    if (p[1] == 'c') {
-		bufSize += 226;
-	    }
+    temp.julianDay = fields->julianDay - 3;
+    GetGregorianEraYearDay(&temp, changeover);
+    if (temp.era == BCE) {
+	temp.iso8601Year = temp.year - 1;
+    } else {
+	temp.iso8601Year = temp.year + 1;
+    }
+    temp.iso8601Week = 1;
+    temp.dayOfWeek = 1;
+    GetJulianDayFromEraYearWeekDay(&temp, changeover);
+
+    /*
+     * temp.julianDay is now the start of an ISO8601 year, either the one
+     * corresponding to the given date, or the one after. If we guessed high,
+     * move one year earlier
+     */
+
+    if (fields->julianDay < temp.julianDay) {
+	if (temp.era == BCE) {
+	    temp.iso8601Year += 1;
 	} else {
-	    bufSize++;
+	    temp.iso8601Year -= 1;
 	}
+	GetJulianDayFromEraYearWeekDay(&temp, changeover);
     }
-    Tcl_DStringInit(&uniBuffer);
-    Tcl_UtfToExternalDString(NULL, format, -1, &uniBuffer);
-    Tcl_DStringInit(&buffer);
-    Tcl_DStringSetLength(&buffer, bufSize);
 
-    /* If we haven't locked the clock mutex up above, lock it now. */
+    fields->iso8601Year = temp.iso8601Year;
+    dayOfFiscalYear = fields->julianDay - temp.julianDay;
+    fields->iso8601Week = (dayOfFiscalYear / 7) + 1;
+    fields->dayOfWeek = (dayOfFiscalYear + 1) % 7;
+    if (fields->dayOfWeek < 1) {
+	fields->dayOfWeek += 7;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetGregorianEraYearDay --
+ *
+ *	Given a Julian Day Number, extracts the year and day of the year and
+ *	puts them into TclDateFields, along with the era (BCE or CE) and a
+ *	flag indicating whether the date is Gregorian or Julian.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Stores 'era', 'gregorian', 'year', and 'dayOfYear'.
+ *
+ *----------------------------------------------------------------------
+ */
 
-#if defined(HAVE_TM_ZONE) || defined(WIN32)
-    Tcl_MutexLock(&clockMutex);
-#endif
-    result = TclpStrftime(buffer.string, (unsigned int) bufSize,
-	    Tcl_DStringValue(&uniBuffer), timeDataPtr, useGMT);
-#if defined(HAVE_TM_ZONE) || defined(WIN32)
-    Tcl_MutexUnlock(&clockMutex);
-#endif
-    Tcl_DStringFree(&uniBuffer);
-
-#if !defined(HAVE_TM_ZONE) && !defined(WIN32)
-    if (useGMT) {
-        if (savedTZEnv != NULL) {
-            Tcl_SetVar2(interp, "env", "TZ", savedTZEnv, TCL_GLOBAL_ONLY);
-            ckfree(savedTZEnv);
-        } else {
-            Tcl_UnsetVar2(interp, "env", "TZ", TCL_GLOBAL_ONLY);
-        }
-        timezone = savedTimeZone;
-        tzset();
-    }
-    Tcl_MutexUnlock( &clockMutex );
-#endif
+static void
+GetGregorianEraYearDay(
+    TclDateFields* fields,	/* Date fields containing 'julianDay' */
+    int changeover)		/* Gregorian transition date */
+{
+    int jday = fields->julianDay;
+    int day;
+    int year;
+    int n;
 
-    if (result == 0) {
+    if (jday >= changeover) {
 	/*
-	 * A zero return is the error case (can also mean the strftime
-	 * didn't get enough space to write into).  We know it doesn't
-	 * mean that we wrote zero chars because the check for an empty
-	 * format string is above.
+	 * Gregorian calendar.
 	 */
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"bad format string \"", format, "\"", (char *) NULL);
+
+	fields->gregorian = 1;
+	year = 1;
+
+	/*
+	 * n = Number of 400-year cycles since 1 January, 1 CE in the
+	 * proleptic Gregorian calendar. day = remaining days.
+	 */
+
+	day = jday - JDAY_1_JAN_1_CE_GREGORIAN;
+	n = day / FOUR_CENTURIES;
+	day %= FOUR_CENTURIES;
+	if (day < 0) {
+	    day += FOUR_CENTURIES;
+	    --n;
+	}
+	year += 400 * n;
+
+	/*
+	 * n = number of centuries since the start of (year);
+	 * day = remaining days
+	 */
+
+	n = day / ONE_CENTURY_GREGORIAN;
+	day %= ONE_CENTURY_GREGORIAN;
+	if (n > 3) {
+	    /*
+	     * 31 December in the last year of a 400-year cycle.
+	     */
+
+	    n = 3;
+	    day += ONE_CENTURY_GREGORIAN;
+	}
+	year += 100 * n;
+
+    } else {
+	/*
+	 * Julian calendar.
+	 */
+
+	fields->gregorian = 0;
+	year = 1;
+	day = jday - JDAY_1_JAN_1_CE_JULIAN;
+
+    }
+
+    /*
+     * n = number of 4-year cycles; days = remaining days.
+     */
+
+    n = day / FOUR_YEARS;
+    day %= FOUR_YEARS;
+    if (day < 0) {
+	day += FOUR_YEARS;
+	--n;
+    }
+    year += 4 * n;
+
+    /*
+     * n = number of years; days = remaining days.
+     */
+
+    n = day / ONE_YEAR;
+    day %= ONE_YEAR;
+    if (n > 3) {
+	/*
+	 * 31 December of a leap year.
+	 */
+
+	n = 3;
+	day += 365;
+    }
+    year += n;
+
+    /*
+     * store era/year/day back into fields.
+     */
+
+    if (year <= 0) {
+	fields->era = BCE;
+	fields->year = 1 - year;
+    } else {
+	fields->era = CE;
+	fields->year = year;
+    }
+    fields->dayOfYear = day + 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetMonthDay --
+ *
+ *	Given a date as year and day-of-year, find month and day.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Stores 'month' and 'dayOfMonth' in the 'fields' structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+GetMonthDay(
+    TclDateFields* fields)	/* Date to convert */
+{
+    int day = fields->dayOfYear;
+    int month;
+    const int* h = hath[IsGregorianLeapYear(fields)];
+
+    for (month = 0; month < 12 && day > h[month]; ++month) {
+	day -= h[month];
+    }
+    fields->month = month+1;
+    fields->dayOfMonth = day;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetJulianDayFromEraYearWeekDay --
+ *
+ *	Given a TclDateFields structure containing era, ISO8601 year, ISO8601
+ *	week, and day of week, computes the Julian Day Number.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Stores 'julianDay' in the fields.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+GetJulianDayFromEraYearWeekDay(
+    TclDateFields* fields,	/* Date to convert */
+    int changeover)		/* Julian Day Number of the Gregorian
+				 * transition */
+{
+    int firstMonday;		/* Julian day number of week 1, day 1 in the
+				 * given year */
+
+    /*
+     * Find January 4 in the ISO8601 year, which will always be in week 1.
+     */
+
+    TclDateFields firstWeek;
+    firstWeek.era = fields->era;
+    firstWeek.year = fields->iso8601Year;
+    firstWeek.month = 1;
+    firstWeek.dayOfMonth = 4;
+    GetJulianDayFromEraYearMonthDay(&firstWeek, changeover);
+
+    /*
+     * Find Monday of week 1.
+     */
+
+    firstMonday = WeekdayOnOrBefore(1, firstWeek.julianDay);
+
+    /*
+     * Advance to the given week and day.
+     */
+
+    fields->julianDay = firstMonday + 7 * (fields->iso8601Week - 1)
+	    + fields->dayOfWeek - 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetJulianDayFromEraYearMonthDay --
+ *
+ *	Given era, year, month, and dayOfMonth (in TclDateFields), and the
+ *	Gregorian transition date, computes the Julian Day Number.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Stores day number in 'julianDay'
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+GetJulianDayFromEraYearMonthDay(
+    TclDateFields* fields,	/* Date to convert */
+    int changeover)		/* Gregorian transition date as a Julian Day */
+{
+    int year;  int ym1;
+    int month; int mm1;
+    int q; int r;
+    int ym1o4; int ym1o100; int ym1o400;
+
+    if (fields->era == BCE) {
+	year = 1 - fields->year;
+    } else {
+	year = fields->year;
+    }
+
+    /*
+     * Reduce month modulo 12.
+     */
+
+    month = fields->month;
+    mm1 = month - 1;
+    q = mm1 / 12;
+    r = (mm1 % 12);
+    if (r < 0) {
+	r += 12;
+	q -= 1;
+    }
+    year += q;
+    month = r + 1;
+    ym1 = year - 1;
+
+    /*
+     * Adjust the year after reducing the month.
+     */
+
+    fields->gregorian = 1;
+    if (year < 1) {
+	fields->era = BCE;
+	fields->year = 1-year;
+    } else {
+	fields->era = CE;
+	fields->year = year;
+    }
+
+    /*
+     * Try an initial conversion in the Gregorian calendar.
+     */
+
+    ym1o4 = ym1 / 4;
+    if (ym1 % 4 < 0) {
+	--ym1o4;
+    }
+    ym1o100 = ym1 / 100;
+    if (ym1 % 100 < 0) {
+	--ym1o100;
+    }
+    ym1o400 = ym1 / 400;
+    if (ym1 % 400 < 0) {
+	--ym1o400;
+    }
+    fields->julianDay = JDAY_1_JAN_1_CE_GREGORIAN - 1
+	    + fields->dayOfMonth
+	    + daysInPriorMonths[IsGregorianLeapYear(fields)][month - 1]
+	    + (ONE_YEAR * ym1)
+	    + ym1o4
+	    - ym1o100
+	    + ym1o400;
+
+    /*
+     * If the resulting date is before the Gregorian changeover, convert in
+     * the Julian calendar instead.
+     */
+
+    if (fields->julianDay < changeover) {
+	fields->gregorian = 0;
+	fields->julianDay = JDAY_1_JAN_1_CE_JULIAN - 1
+		+ fields->dayOfMonth
+		+ daysInPriorMonths[year%4 == 0][month - 1]
+		+ (ONE_YEAR * ym1)
+	        + ym1o4;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * IsGregorianLeapYear --
+ *
+ *	Tests whether a given year is a leap year, in either Julian or
+ *	Gregorian calendar.
+ *
+ * Results:
+ *	Returns 1 for a leap year, 0 otherwise.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+IsGregorianLeapYear(
+    TclDateFields* fields)	/* Date to test */
+{
+    int year;
+
+    if (fields->era == BCE) {
+	year = 1 - fields->year;
+    } else {
+	year = fields->year;
+    }
+    if (year%4 != 0) {
+	return 0;
+    } else if (!(fields->gregorian)) {
+	return 1;
+    } else if (year%400 == 0) {
+	return 1;
+    } else if (year%100 == 0) {
+	return 0;
+    } else {
+	return 1;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * WeekdayOnOrBefore --
+ *
+ *	Finds the Julian Day Number of a given day of the week that falls on
+ *	or before a given date, expressed as Julian Day Number.
+ *
+ * Results:
+ *	Returns the Julian Day Number
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+WeekdayOnOrBefore(
+    int dayOfWeek,		/* Day of week; Sunday == 0 or 7 */
+    int julianDay)		/* Reference date */
+{
+    int k = (dayOfWeek + 6) % 7;
+    if (k < 0) {
+	k += 7;
+    }
+    return julianDay - ((julianDay - k) % 7);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ClockGetenvObjCmd --
+ *
+ *	Tcl command that reads an environment variable from the system
+ *
+ * Usage:
+ *	::tcl::clock::getEnv NAME
+ *
+ * Parameters:
+ *	NAME - Name of the environment variable desired
+ *
+ * Results:
+ *	Returns a standard Tcl result. Returns an error if the variable does
+ *	not exist, with a message left in the interpreter. Returns TCL_OK and
+ *	the value of the variable if the variable does exist,
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+ClockGetenvObjCmd(
+    ClientData clientData,
+    Tcl_Interp* interp,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    const char* varName;
+    const char* varValue;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "name");
 	return TCL_ERROR;
     }
+    varName = TclGetString(objv[1]);
+    varValue = getenv(varName);
+    if (varValue == NULL) {
+	varValue = "";
+    }
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(varValue, -1));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ThreadSafeLocalTime --
+ *
+ *	Wrapper around the 'localtime' library function to make it thread
+ *	safe.
+ *
+ * Results:
+ *	Returns a pointer to a 'struct tm' in thread-specific data.
+ *
+ * Side effects:
+ *	Invokes localtime or localtime_r as appropriate.
+ *
+ *----------------------------------------------------------------------
+ */
 
+static struct tm *
+ThreadSafeLocalTime(
+    const time_t *timePtr)	/* Pointer to the number of seconds since the
+				 * local system's epoch */
+{
     /*
-     * Convert the time to UTF from external encoding [Bug: 3345]
+     * Get a thread-local buffer to hold the returned time.
      */
-    Tcl_DStringInit(&uniBuffer);
-    Tcl_ExternalToUtfDString(NULL, buffer.string, -1, &uniBuffer);
 
-    Tcl_SetStringObj(Tcl_GetObjResult(interp), uniBuffer.string, -1);
+    struct tm *tmPtr = (struct tm *)
+	    Tcl_GetThreadData(&tmKey, (int) sizeof(struct tm));
+#ifdef HAVE_LOCALTIME_R
+    localtime_r(timePtr, tmPtr);
+#else
+    struct tm *sysTmPtr;
 
-    Tcl_DStringFree(&uniBuffer);
-    Tcl_DStringFree(&buffer);
+    Tcl_MutexLock(&clockMutex);
+    sysTmPtr = localtime(timePtr);
+    if (sysTmPtr == NULL) {
+	Tcl_MutexUnlock(&clockMutex);
+	return NULL;
+    } else {
+	memcpy((void *) tmPtr, (void *) localtime(timePtr), sizeof(struct tm));
+	Tcl_MutexUnlock(&clockMutex);
+    }
+#endif
+    return tmPtr;
+}
+
+/*----------------------------------------------------------------------
+ *
+ * ClockClicksObjCmd --
+ *
+ *	Returns a high-resolution counter.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ * This function implements the 'clock clicks' Tcl command. Refer to the user
+ * documentation for details on what it does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+ClockClicksObjCmd(
+    ClientData clientData,	/* Client data is unused */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj* const* objv)	/* Parameter values */
+{
+    static const char *clicksSwitches[] = {
+	"-milliseconds", "-microseconds", NULL
+    };
+    enum ClicksSwitch {
+	CLICKS_MILLIS,   CLICKS_MICROS,   CLICKS_NATIVE
+    };
+    int index = CLICKS_NATIVE;
+    Tcl_Time now;
+
+    switch (objc) {
+    case 1:
+	break;
+    case 2:
+	if (Tcl_GetIndexFromObj(interp, objv[1], clicksSwitches, "option", 0,
+		&index) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	break;
+    default:
+	Tcl_WrongNumArgs(interp, 1, objv, "?option?");
+	return TCL_ERROR;
+    }
+
+    switch (index) {
+    case CLICKS_MILLIS:
+	Tcl_GetTime(&now);
+	Tcl_SetObjResult(interp, Tcl_NewWideIntObj((Tcl_WideInt)
+		now.sec * 1000 + now.usec / 1000));
+	break;
+    case CLICKS_NATIVE: {
+#ifndef TCL_WIDE_CLICKS
+	unsigned long clicks = TclpGetClicks();
+#else
+	Tcl_WideInt clicks = TclpGetWideClicks();
+#endif
+	Tcl_SetObjResult(interp, Tcl_NewWideIntObj((Tcl_WideInt) clicks));
+	break;
+    }
+    case CLICKS_MICROS:
+	Tcl_GetTime(&now);
+	Tcl_SetObjResult(interp, Tcl_NewWideIntObj(
+		((Tcl_WideInt) now.sec * 1000000) + now.usec));
+	break;
+    }
+
+    return TCL_OK;
+}
+
+/*----------------------------------------------------------------------
+ *
+ * ClockMillisecondsObjCmd -
+ *
+ *	Returns a count of milliseconds since the epoch.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ * This function implements the 'clock milliseconds' Tcl command. Refer to the
+ * user documentation for details on what it does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+ClockMillisecondsObjCmd(
+    ClientData clientData,	/* Client data is unused */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj* const* objv)	/* Parameter values */
+{
+    Tcl_Time now;
+
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
+    }
+    Tcl_GetTime(&now);
+    Tcl_SetObjResult(interp, Tcl_NewWideIntObj( (Tcl_WideInt)
+	    now.sec * 1000 + now.usec / 1000));
     return TCL_OK;
 }
+
+/*----------------------------------------------------------------------
+ *
+ * ClockMicrosecondsObjCmd -
+ *
+ *	Returns a count of microseconds since the epoch.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ * This function implements the 'clock microseconds' Tcl command. Refer to the
+ * user documentation for details on what it does.
+ *
+ *----------------------------------------------------------------------
+ */
 
+int
+ClockMicrosecondsObjCmd(
+    ClientData clientData,	/* Client data is unused */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj* const* objv)	/* Parameter values */
+{
+    Tcl_Time now;
+
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
+    }
+    Tcl_GetTime(&now);
+    Tcl_SetObjResult(interp, Tcl_NewWideIntObj(
+	    ((Tcl_WideInt) now.sec * 1000000) + now.usec));
+    return TCL_OK;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ClockParseformatargsObjCmd --
+ *
+ *	Parses the arguments for [clock format].
+ *
+ * Results:
+ *	Returns a standard Tcl result, whose value is a four-element 
+ *	list comprising the time format, the locale, and the timezone.
+ *
+ * This function exists because the loop that parses the [clock format]
+ * options is a known performance "hot spot", and is implemented in an 
+ * effort to speed that particular code up.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+static int
+ClockParseformatargsObjCmd(
+    ClientData clientData,	/* Client data containing literal pool */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const objv[]	/* Parameter vector */
+) {
+
+    ClockClientData* dataPtr = (ClockClientData*) clientData;
+    Tcl_Obj** litPtr = dataPtr->literals;
+
+    /* Format, locale and timezone */
+
+    Tcl_Obj* results[3];
+#define formatObj results[0]
+#define localeObj results[1]
+#define timezoneObj results[2]
+    int gmtFlag = 0;
+
+    /* Command line options expected */
+
+    static const char* options[] = {
+	"-format",		"-gmt",			"-locale",
+	"-timezone",		NULL };
+    enum optionInd {
+	CLOCK_FORMAT_FORMAT,	CLOCK_FORMAT_GMT,	CLOCK_FORMAT_LOCALE,
+	CLOCK_FORMAT_TIMEZONE 
+    };
+    int optionIndex;		/* Index of an option */
+    int saw = 0;		/* Flag == 1 if option was seen already */
+    Tcl_WideInt clockVal;	/* Clock value - just used to parse */
+    int i;
+
+    /* Args consist of a time followed by keyword-value pairs */
+
+    if (objc < 2 || (objc % 2) != 0) {
+	Tcl_WrongNumArgs(interp, 0, objv,
+			 "clock format clockval ?-format string? "
+			 "?-gmt boolean? ?-locale LOCALE? ?-timezone ZONE?");
+	Tcl_SetErrorCode(interp, "CLOCK", "wrongNumArgs", NULL);
+	return TCL_ERROR;
+    }
+
+    /* Extract values for the keywords */
+
+    formatObj = litPtr[LIT__DEFAULT_FORMAT];
+    localeObj = litPtr[LIT_C];
+    timezoneObj = litPtr[LIT__NIL];
+    for (i = 2; i < objc; i+=2) {
+	if (Tcl_GetIndexFromObj(interp, objv[i], options, "switch", 0,
+				&optionIndex) != TCL_OK) {
+	    Tcl_SetErrorCode(interp, "CLOCK", "badSwitch",
+			     Tcl_GetString(objv[i]), NULL);
+	    return TCL_ERROR;
+	}
+	switch (optionIndex) {
+	case CLOCK_FORMAT_FORMAT:
+	    formatObj = objv[i+1];
+	    break;
+	case CLOCK_FORMAT_GMT:
+	    if (Tcl_GetBooleanFromObj(interp, objv[i+1], &gmtFlag) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    break;
+	case CLOCK_FORMAT_LOCALE:
+	    localeObj = objv[i+1];
+	    break;
+	case CLOCK_FORMAT_TIMEZONE:
+	    timezoneObj = objv[i+1];
+	    break;
+	}
+	saw |= (1 << optionIndex);
+    }
+
+    /* Check options */
+
+    if (Tcl_GetWideIntFromObj(interp, objv[1], &clockVal) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if ((saw & (1 << CLOCK_FORMAT_GMT))
+	&& (saw & (1 << CLOCK_FORMAT_TIMEZONE))) {
+	Tcl_SetObjResult(interp, litPtr[LIT_CANNOT_USE_GMT_AND_TIMEZONE]);
+	Tcl_SetErrorCode(interp, "CLOCK", "gmtWithTimezone", NULL);
+	return TCL_ERROR;
+    }
+    if (gmtFlag) {
+	timezoneObj = litPtr[LIT_GMT];
+    }
+
+    /* Return options as a list */
+
+    Tcl_SetObjResult(interp, Tcl_NewListObj(3, results));
+    return TCL_OK;
+
+#undef timezoneObj
+#undef localeObj
+#undef formatObj
+
+}
+
+/*----------------------------------------------------------------------
+ *
+ * ClockSecondsObjCmd -
+ *
+ *	Returns a count of microseconds since the epoch.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ * This function implements the 'clock seconds' Tcl command. Refer to the user
+ * documentation for details on what it does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+ClockSecondsObjCmd(
+    ClientData clientData,	/* Client data is unused */
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj* const* objv)	/* Parameter values */
+{
+    Tcl_Time now;
+
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
+    }
+    Tcl_GetTime(&now);
+    Tcl_SetObjResult(interp, Tcl_NewWideIntObj((Tcl_WideInt) now.sec));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TzsetIfNecessary --
+ *
+ *	Calls the tzset() library function if the contents of the TZ
+ *	environment variable has changed.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Calls tzset.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+TzsetIfNecessary(void)
+{
+    static char* tzWas = NULL;	/* Previous value of TZ, protected by
+				 * clockMutex. */
+    const char* tzIsNow;	/* Current value of TZ */
+
+    Tcl_MutexLock(&clockMutex);
+    tzIsNow = getenv("TZ");
+    if (tzIsNow != NULL && (tzWas == NULL || strcmp(tzIsNow, tzWas) != 0)) {
+	tzset();
+	if (tzWas != NULL) {
+	    ckfree(tzWas);
+	}
+	tzWas = ckalloc(strlen(tzIsNow) + 1);
+	strcpy(tzWas, tzIsNow);
+    } else if (tzIsNow == NULL && tzWas != NULL) {
+	tzset();
+	ckfree(tzWas);
+	tzWas = NULL;
+    }
+    Tcl_MutexUnlock(&clockMutex);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ClockDeleteCmdProc --
+ *
+ *	Remove a reference to the clock client data, and clean up memory
+ *	when it's all gone.
+ *
+ * Results:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ClockDeleteCmdProc(
+    ClientData clientData)	/* Opaque pointer to the client data */
+{
+    ClockClientData *data = (ClockClientData*) clientData;
+    int i;
+
+    --(data->refCount);
+    if (data->refCount == 0) {
+	for (i = 0; i < LIT__END; ++i) {
+	    Tcl_DecrRefCount(data->literals[i]);
+	}
+	ckfree((char*) (data->literals));
+	ckfree((char*) data);
+    }
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclCmdAH.c b/generic/tclCmdAH.c
index 2f7814c..44f08a3 100644
--- a/generic/tclCmdAH.c
+++ b/generic/tclCmdAH.c
@@ -1,51 +1,45 @@
-/* 
+/*
  * tclCmdAH.c --
  *
- *	This file contains the top-level command routines for most of
- *	the Tcl built-in commands whose names begin with the letters
- *	A to H.
+ *	This file contains the top-level command routines for most of the Tcl
+ *	built-in commands whose names begin with the letters A to H.
  *
  * Copyright (c) 1987-1993 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#ifndef _WIN64
-/* See [Bug 3354324]: file mtime sets wrong time */
-#   define _USE_32BIT_TIME_T
-#endif
-
-#include <sys/stat.h>
 #include "tclInt.h"
-#include "tclPort.h"
 #include <locale.h>
 
 /*
  * Prototypes for local procedures defined in this file:
  */
 
-static int		CheckAccess _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr, int mode));
-static int		GetStatBuf _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr, Tcl_FSStatProc *statProc,
-			    Tcl_StatBuf *statPtr));
-static char *		GetTypeFromMode _ANSI_ARGS_((int mode));
-static int		StoreStatData _ANSI_ARGS_((Tcl_Interp *interp,
-			    char *varName, Tcl_StatBuf *statPtr));
+static int		CheckAccess(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+			    int mode);
+static int		EncodingDirsObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		GetStatBuf(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+			    Tcl_FSStatProc *statProc, Tcl_StatBuf *statPtr);
+static char *		GetTypeFromMode(int mode);
+static int		StoreStatData(Tcl_Interp *interp, Tcl_Obj *varName,
+			    Tcl_StatBuf *statPtr);
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_BreakObjCmd --
  *
- *	This procedure is invoked to process the "break" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "break" Tcl command. See the
+ *	user documentation for details on what it does.
  *
- *	With the bytecode compiler, this procedure is only called when
- *	a command name is computed at runtime, and is "break" or the name
- *	to which "break" was renamed: e.g., "set z break; $z"
+ *	With the bytecode compiler, this procedure is only called when a
+ *	command name is computed at runtime, and is "break" or the name to
+ *	which "break" was renamed: e.g., "set z break; $z"
  *
  * Results:
  *	A standard Tcl result.
@@ -58,11 +52,11 @@ static int		StoreStatData _ANSI_ARGS_((Tcl_Interp *interp,
 
 	/* ARGSUSED */
 int
-Tcl_BreakObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_BreakObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     if (objc != 1) {
 	Tcl_WrongNumArgs(interp, 1, objv, NULL);
@@ -76,8 +70,9 @@ Tcl_BreakObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_CaseObjCmd --
  *
- *	This procedure is invoked to process the "case" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "case" Tcl command. See the
+ *	user documentation for details on what it does. THIS COMMAND IS
+ *	OBSOLETE AND DEPRECATED. SLATED FOR REMOVAL IN TCL 9.0.
  *
  * Results:
  *	A standard Tcl object result.
@@ -90,16 +85,16 @@ Tcl_BreakObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_CaseObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_CaseObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register int i;
     int body, result, caseObjc;
-    char *string, *arg;
-    Tcl_Obj *CONST *caseObjv;
+    char *stringPtr, *arg;
+    Tcl_Obj *const *caseObjv;
     Tcl_Obj *armPtr;
 
     if (objc < 3) {
@@ -108,10 +103,10 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
 	return TCL_ERROR;
     }
 
-    string = Tcl_GetString(objv[1]);
+    stringPtr = TclGetString(objv[1]);
     body = -1;
 
-    arg = Tcl_GetString(objv[2]);
+    arg = TclGetString(objv[2]);
     if (strcmp(arg, "in") == 0) {
 	i = 3;
     } else {
@@ -121,36 +116,35 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
     caseObjv = objv + i;
 
     /*
-     * If all of the pattern/command pairs are lumped into a single
-     * argument, split them out again.
+     * If all of the pattern/command pairs are lumped into a single argument,
+     * split them out again.
      */
 
     if (caseObjc == 1) {
 	Tcl_Obj **newObjv;
-	
-	Tcl_ListObjGetElements(interp, caseObjv[0], &caseObjc, &newObjv);
+
+	TclListObjGetElements(interp, caseObjv[0], &caseObjc, &newObjv);
 	caseObjv = newObjv;
     }
 
     for (i = 0;  i < caseObjc;  i += 2) {
 	int patObjc, j;
-	CONST char **patObjv;
+	const char **patObjv;
 	char *pat;
 	unsigned char *p;
 
 	if (i == (caseObjc - 1)) {
 	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	            "extra case pattern with no body", -1);
+	    Tcl_AppendResult(interp, "extra case pattern with no body", NULL);
 	    return TCL_ERROR;
 	}
 
 	/*
-	 * Check for special case of single pattern (no list) with
-	 * no backslash sequences.
+	 * Check for special case of single pattern (no list) with no
+	 * backslash sequences.
 	 */
 
-	pat = Tcl_GetString(caseObjv[i]);
+	pat = TclGetString(caseObjv[i]);
 	for (p = (unsigned char *) pat; *p != '\0'; p++) {
 	    if (isspace(*p) || (*p == '\\')) {	/* INTL: ISO space, UCHAR */
 		break;
@@ -160,17 +154,16 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
 	    if ((*pat == 'd') && (strcmp(pat, "default") == 0)) {
 		body = i + 1;
 	    }
-	    if (Tcl_StringMatch(string, pat)) {
+	    if (Tcl_StringMatch(stringPtr, pat)) {
 		body = i + 1;
 		goto match;
 	    }
 	    continue;
 	}
 
-
 	/*
-	 * Break up pattern lists, then check each of the patterns
-	 * in the list.
+	 * Break up pattern lists, then check each of the patterns in the
+	 * list.
 	 */
 
 	result = Tcl_SplitList(interp, pat, &patObjc, &patObjv);
@@ -178,7 +171,7 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
 	    return result;
 	}
 	for (j = 0; j < patObjc; j++) {
-	    if (Tcl_StringMatch(string, patObjv[j])) {
+	    if (Tcl_StringMatch(stringPtr, patObjv[j])) {
 		body = i + 1;
 		break;
 	    }
@@ -189,18 +182,14 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
 	}
     }
 
-    match:
+  match:
     if (body != -1) {
 	armPtr = caseObjv[body - 1];
 	result = Tcl_EvalObjEx(interp, caseObjv[body], 0);
 	if (result == TCL_ERROR) {
-	    char msg[100 + TCL_INTEGER_SPACE];
-	    
-	    arg = Tcl_GetString(armPtr);
-	    sprintf(msg,
-		    "\n    (\"%.50s\" arm line %d)", arg,
-	            interp->errorLine);
-	    Tcl_AddObjErrorInfo(interp, msg, -1);
+	    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		    "\n    (\"%.50s\" arm line %d)",
+		    TclGetString(armPtr), interp->errorLine));
 	}
 	return result;
     }
@@ -217,7 +206,7 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_CatchObjCmd --
  *
- *	This object-based procedure is invoked to process the "catch" Tcl 
+ *	This object-based procedure is invoked to process the "catch" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
@@ -231,53 +220,68 @@ Tcl_CaseObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_CatchObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_CatchObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Obj *varNamePtr = NULL;
+    Tcl_Obj *optionVarNamePtr = NULL;
     int result;
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    Interp *iPtr = (Interp *) interp;
 
-    if ((objc != 2) && (objc != 3)) {
-	Tcl_WrongNumArgs(interp, 1, objv, "command ?varName?");
+    if ((objc < 2) || (objc > 4)) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"script ?resultVarName? ?optionVarName?");
 	return TCL_ERROR;
     }
 
-    if (objc == 3) {
+    if (objc >= 3) {
 	varNamePtr = objv[2];
     }
+    if (objc == 4) {
+	optionVarNamePtr = objv[3];
+    }
 
-#ifndef TCL_TIP280
-    result = Tcl_EvalObjEx(interp, objv[1], 0);
-#else
-    /* TIP #280. Make invoking context available to caught script */
-    result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr,1);
-#endif
-    
-    if (objc == 3) {
-	if (Tcl_ObjSetVar2(interp, varNamePtr, NULL,
-		Tcl_GetObjResult(interp), 0) == NULL) {
+    /*
+     * TIP #280. Make invoking context available to caught script.
+     */
+
+    result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1);
+
+    /*
+     * We disable catch in interpreters where the limit has been exceeded.
+     */
+
+    if (Tcl_LimitExceeded(interp)) {
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (\"catch\" body line %d)", interp->errorLine));
+	return TCL_ERROR;
+    }
+
+    if (objc >= 3) {
+	if (NULL == Tcl_ObjSetVar2(interp, varNamePtr, NULL,
+		Tcl_GetObjResult(interp), 0)) {
 	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp),  
-	            "couldn't save command result in variable", -1);
+	    Tcl_AppendResult(interp,
+		    "couldn't save command result in variable", NULL);
+	    return TCL_ERROR;
+	}
+    }
+    if (objc == 4) {
+	Tcl_Obj *options = Tcl_GetReturnOptions(interp, result);
+	if (NULL == Tcl_ObjSetVar2(interp, optionVarNamePtr, NULL,
+		options, 0)) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp,
+		    "couldn't save return options in variable", NULL);
 	    return TCL_ERROR;
 	}
     }
-
-    /*
-     * Set the interpreter's object result to an integer object holding the
-     * integer Tcl_EvalObj result. Note that we don't bother generating a
-     * string representation. We reset the interpreter's object result
-     * to an unshared empty object and then set it to be an integer object.
-     */
 
     Tcl_ResetResult(interp);
-    Tcl_SetIntObj(Tcl_GetObjResult(interp), result);
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(result));
     return TCL_OK;
 }
 
@@ -286,8 +290,8 @@ Tcl_CatchObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_CdObjCmd --
  *
- *	This procedure is invoked to process the "cd" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "cd" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -300,11 +304,11 @@ Tcl_CatchObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_CdObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_CdObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Obj *dir;
     int result;
@@ -317,7 +321,7 @@ Tcl_CdObjCmd(dummy, interp, objc, objv)
     if (objc == 2) {
 	dir = objv[1];
     } else {
-	dir = Tcl_NewStringObj("~",1);
+	TclNewLiteralStringObj(dir, "~");
 	Tcl_IncrRefCount(dir);
     }
     if (Tcl_FSConvertToPathType(interp, dir) != TCL_OK) {
@@ -326,7 +330,7 @@ Tcl_CdObjCmd(dummy, interp, objc, objv)
 	result = Tcl_FSChdir(dir);
 	if (result != TCL_OK) {
 	    Tcl_AppendResult(interp, "couldn't change working directory to \"",
-		    Tcl_GetString(dir), "\": ", Tcl_PosixError(interp), (char *) NULL);
+		    TclGetString(dir), "\": ", Tcl_PosixError(interp), NULL);
 	    result = TCL_ERROR;
 	}
     }
@@ -355,11 +359,11 @@ Tcl_CdObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ConcatObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ConcatObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     if (objc >= 2) {
 	Tcl_SetObjResult(interp, Tcl_ConcatObj(objc-1, objv+1));
@@ -370,14 +374,14 @@ Tcl_ConcatObjCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_ContinueObjCmd -
+ * Tcl_ContinueObjCmd --
  *
- *	This procedure is invoked to process the "continue" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "continue" Tcl command. See
+ *	the user documentation for details on what it does.
  *
- *	With the bytecode compiler, this procedure is only called when
- *	a command name is computed at runtime, and is "continue" or the name
- *	to which "continue" was renamed: e.g., "set z continue; $z"
+ *	With the bytecode compiler, this procedure is only called when a
+ *	command name is computed at runtime, and is "continue" or the name to
+ *	which "continue" was renamed: e.g., "set z continue; $z"
  *
  * Results:
  *	A standard Tcl result.
@@ -390,11 +394,11 @@ Tcl_ConcatObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ContinueObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_ContinueObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     if (objc != 1) {
 	Tcl_WrongNumArgs(interp, 1, objv, NULL);
@@ -420,29 +424,25 @@ Tcl_ContinueObjCmd(dummy, interp, objc, objv)
  */
 
 int
-Tcl_EncodingObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_EncodingObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int index, length;
-    Tcl_Encoding encoding;
-    char *string;
-    Tcl_DString ds;
-    Tcl_Obj *resultPtr;
+    int index;
 
-    static CONST char *optionStrings[] = {
-	"convertfrom", "convertto", "names", "system",
+    static const char *optionStrings[] = {
+	"convertfrom", "convertto", "dirs", "names", "system",
 	NULL
     };
     enum options {
-	ENC_CONVERTFROM, ENC_CONVERTTO, ENC_NAMES, ENC_SYSTEM
+	ENC_CONVERTFROM, ENC_CONVERTTO, ENC_DIRS, ENC_NAMES, ENC_SYSTEM
     };
 
     if (objc < 2) {
-    	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
+	return TCL_ERROR;
     }
     if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
 	    &index) != TCL_OK) {
@@ -450,78 +450,80 @@ Tcl_EncodingObjCmd(dummy, interp, objc, objv)
     }
 
     switch ((enum options) index) {
-	case ENC_CONVERTTO:
-	case ENC_CONVERTFROM: {
-	    Tcl_Obj *data;
-	    if (objc == 3) {
-		encoding = Tcl_GetEncoding(interp, NULL);
-		data = objv[2];
-	    } else if (objc == 4) {
-		if (TclGetEncodingFromObj(interp, objv[2], &encoding)
-			!= TCL_OK) {
-		    return TCL_ERROR;
-		}
-		data = objv[3];
-	    } else {
-		Tcl_WrongNumArgs(interp, 2, objv, "?encoding? data");
+    case ENC_CONVERTTO:
+    case ENC_CONVERTFROM: {
+	Tcl_Obj *data;
+	Tcl_DString ds;
+	Tcl_Encoding encoding;
+	int length;
+	char *stringPtr;
+
+	if (objc == 3) {
+	    encoding = Tcl_GetEncoding(interp, NULL);
+	    data = objv[2];
+	} else if (objc == 4) {
+	    if (Tcl_GetEncodingFromObj(interp, objv[2], &encoding) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    
-	    if ((enum options) index == ENC_CONVERTFROM) {
-		/*
-		 * Treat the string as binary data.
-		 */
+	    data = objv[3];
+	} else {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?encoding? data");
+	    return TCL_ERROR;
+	}
 
-		string = (char *) Tcl_GetByteArrayFromObj(data, &length);
-		Tcl_ExternalToUtfDString(encoding, string, length, &ds);
+	if ((enum options) index == ENC_CONVERTFROM) {
+	    /*
+	     * Treat the string as binary data.
+	     */
 
-		/*
-		 * Note that we cannot use Tcl_DStringResult here because
-		 * it will truncate the string at the first null byte.
-		 */
+	    stringPtr = (char *) Tcl_GetByteArrayFromObj(data, &length);
+	    Tcl_ExternalToUtfDString(encoding, stringPtr, length, &ds);
 
-		Tcl_SetStringObj(Tcl_GetObjResult(interp),
-			Tcl_DStringValue(&ds), Tcl_DStringLength(&ds));
-		Tcl_DStringFree(&ds);
-	    } else {
-		/*
-		 * Store the result as binary data.
-		 */
+	    /*
+	     * Note that we cannot use Tcl_DStringResult here because it will
+	     * truncate the string at the first null byte.
+	     */
 
-		string = Tcl_GetStringFromObj(data, &length);
-		Tcl_UtfToExternalDString(encoding, string, length, &ds);
-		resultPtr = Tcl_GetObjResult(interp);
-		Tcl_SetByteArrayObj(resultPtr, 
-			(unsigned char *) Tcl_DStringValue(&ds),
-			Tcl_DStringLength(&ds));
-		Tcl_DStringFree(&ds);
-	    }
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		    Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)));
+	    Tcl_DStringFree(&ds);
+	} else {
+	    /*
+	     * Store the result as binary data.
+	     */
 
-	    Tcl_FreeEncoding(encoding);
-	    break;
+	    stringPtr = TclGetStringFromObj(data, &length);
+	    Tcl_UtfToExternalDString(encoding, stringPtr, length, &ds);
+	    Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(
+		    (unsigned char *) Tcl_DStringValue(&ds),
+		    Tcl_DStringLength(&ds)));
+	    Tcl_DStringFree(&ds);
 	}
-	case ENC_NAMES: {
-	    if (objc > 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-	    Tcl_GetEncodingNames(interp);
-	    break;
+
+	Tcl_FreeEncoding(encoding);
+	break;
+    }
+    case ENC_DIRS:
+	return EncodingDirsObjCmd(dummy, interp, objc, objv);
+    case ENC_NAMES:
+	if (objc > 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
 	}
-	case ENC_SYSTEM: {
-	    if (objc > 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "?encoding?");
-		return TCL_ERROR;
-	    }
-	    if (objc == 2) {
-		Tcl_SetStringObj(Tcl_GetObjResult(interp),
-			Tcl_GetEncodingName(NULL), -1);
-	    } else {
-	        return Tcl_SetSystemEncoding(interp,
-			Tcl_GetStringFromObj(objv[2], NULL));
-	    }
-	    break;
+	Tcl_GetEncodingNames(interp);
+	break;
+    case ENC_SYSTEM:
+	if (objc > 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?encoding?");
+	    return TCL_ERROR;
 	}
+	if (objc == 2) {
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		    Tcl_GetEncodingName(NULL), -1));
+	} else {
+	    return Tcl_SetSystemEncoding(interp, TclGetString(objv[2]));
+	}
+	break;
     }
     return TCL_OK;
 }
@@ -529,10 +531,54 @@ Tcl_EncodingObjCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
+ * EncodingDirsObjCmd --
+ *
+ *	This command manipulates the encoding search path.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Can set the encoding search path.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+EncodingDirsObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_Obj *dirListObj;
+
+    if (objc > 3) {
+	Tcl_WrongNumArgs(interp, 2, objv, "?dirList?");
+	return TCL_ERROR;
+    }
+    if (objc == 2) {
+	Tcl_SetObjResult(interp, Tcl_GetEncodingSearchPath());
+	return TCL_OK;
+    }
+
+    dirListObj = objv[2];
+    if (Tcl_SetEncodingSearchPath(dirListObj) == TCL_ERROR) {
+	Tcl_AppendResult(interp, "expected directory list but got \"",
+		TclGetString(dirListObj), "\"", NULL);
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, dirListObj);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_ErrorObjCmd --
  *
- *	This procedure is invoked to process the "error" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "error" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -545,36 +591,35 @@ Tcl_EncodingObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ErrorObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ErrorObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    char *info;
-    int infoLen;
+    Tcl_Obj *options, *optName;
 
     if ((objc < 2) || (objc > 4)) {
 	Tcl_WrongNumArgs(interp, 1, objv, "message ?errorInfo? ?errorCode?");
 	return TCL_ERROR;
     }
-    
-    if (objc >= 3) {		/* process the optional info argument */
-	info = Tcl_GetStringFromObj(objv[2], &infoLen);
-	if (infoLen > 0) {
-	    Tcl_AddObjErrorInfo(interp, info, infoLen);
-	    iPtr->flags |= ERR_ALREADY_LOGGED;
-	}
+
+    TclNewLiteralStringObj(options, "-code error -level 0");
+
+    if (objc >= 3) {		/* Process the optional info argument */
+	TclNewLiteralStringObj(optName, "-errorinfo");
+	Tcl_ListObjAppendElement(NULL, options, optName);
+	Tcl_ListObjAppendElement(NULL, options, objv[2]);
     }
-    
-    if (objc == 4) {
-	Tcl_SetVar2Ex(interp, "errorCode", NULL, objv[3], TCL_GLOBAL_ONLY);
-	iPtr->flags |= ERROR_CODE_SET;
+
+    if (objc >= 4) {		/* Process the optional code argument */
+	TclNewLiteralStringObj(optName, "-errorcode");
+	Tcl_ListObjAppendElement(NULL, options, optName);
+	Tcl_ListObjAppendElement(NULL, options, objv[3]);
     }
-    
+
     Tcl_SetObjResult(interp, objv[1]);
-    return TCL_ERROR;
+    return Tcl_SetReturnOptions(interp, options);
 }
 
 /*
@@ -582,7 +627,7 @@ Tcl_ErrorObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_EvalObjCmd --
  *
- *	This object-based procedure is invoked to process the "eval" Tcl 
+ *	This object-based procedure is invoked to process the "eval" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
@@ -596,53 +641,50 @@ Tcl_ErrorObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_EvalObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_EvalObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int result;
     register Tcl_Obj *objPtr;
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    Interp *iPtr = (Interp *) interp;
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
 	return TCL_ERROR;
     }
-    
+
     if (objc == 2) {
-#ifndef TCL_TIP280
-	result = Tcl_EvalObjEx(interp, objv[1], TCL_EVAL_DIRECT);
-#else
-	/* TIP #280. Make argument location available to eval'd script */
+	/*
+	 * TIP #280. Make argument location available to eval'd script.
+	 */
+
 	CmdFrame* invoker = iPtr->cmdFramePtr;
 	int word          = 1;
 	TclArgumentGet (interp, objv[1], &invoker, &word);
+
 	result = TclEvalObjEx(interp, objv[1], TCL_EVAL_DIRECT,
-			      invoker, word);
-#endif
+		invoker, word);
     } else {
 	/*
 	 * More than one argument: concatenate them together with spaces
-	 * between, then evaluate the result.  Tcl_EvalObjEx will delete
-	 * the object when it decrements its refcount after eval'ing it.
+	 * between, then evaluate the result. Tcl_EvalObjEx will delete the
+	 * object when it decrements its refcount after eval'ing it.
 	 */
-    	objPtr = Tcl_ConcatObj(objc-1, objv+1);
-#ifndef TCL_TIP280
-	result = Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_DIRECT);
-#else
-	/* TIP #280. Make invoking context available to eval'd script */
+
+	objPtr = Tcl_ConcatObj(objc-1, objv+1);
+
+	/*
+	 * TIP #280. Make invoking context available to eval'd script.
+	 */
+
 	result = TclEvalObjEx(interp, objPtr, TCL_EVAL_DIRECT, NULL, 0);
-#endif
     }
     if (result == TCL_ERROR) {
-	char msg[32 + TCL_INTEGER_SPACE];
-
-	sprintf(msg, "\n    (\"eval\" body line %d)", interp->errorLine);
-	Tcl_AddObjErrorInfo(interp, msg, -1);
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (\"eval\" body line %d)", interp->errorLine));
     }
     return result;
 }
@@ -652,8 +694,8 @@ Tcl_EvalObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_ExitObjCmd --
  *
- *	This procedure is invoked to process the "exit" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "exit" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -666,11 +708,11 @@ Tcl_EvalObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ExitObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ExitObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int value;
 
@@ -678,7 +720,7 @@ Tcl_ExitObjCmd(dummy, interp, objc, objv)
 	Tcl_WrongNumArgs(interp, 1, objv, "?returnCode?");
 	return TCL_ERROR;
     }
-    
+
     if (objc == 1) {
 	value = 0;
     } else if (Tcl_GetIntFromObj(interp, objv[1], &value) != TCL_OK) {
@@ -686,7 +728,7 @@ Tcl_ExitObjCmd(dummy, interp, objc, objv)
     }
     Tcl_Exit(value);
     /*NOTREACHED*/
-    return TCL_OK;			/* Better not ever reach this! */
+    return TCL_OK;		/* Better not ever reach this! */
 }
 
 /*
@@ -698,8 +740,8 @@ Tcl_ExitObjCmd(dummy, interp, objc, objv)
  *	command. See the user documentation for details on what it does.
  *
  *	With the bytecode compiler, this procedure is called in two
- *	circumstances: 1) to execute expr commands that are too complicated
- *	or too unsafe to try compiling directly into an inline sequence of
+ *	circumstances: 1) to execute expr commands that are too complicated or
+ *	too unsafe to try compiling directly into an inline sequence of
  *	instructions, and 2) to execute commands where the command name is
  *	computed at runtime and is "expr" or the name to which "expr" was
  *	renamed (e.g., "set z expr; $z 2+3")
@@ -715,16 +757,14 @@ Tcl_ExitObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ExprObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
-{	 
-    register Tcl_Obj *objPtr;
+Tcl_ExprObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
     Tcl_Obj *resultPtr;
-    register char *bytes;
-    int length, i, result;
+    int result;
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
@@ -733,42 +773,18 @@ Tcl_ExprObjCmd(dummy, interp, objc, objv)
 
     if (objc == 2) {
 	result = Tcl_ExprObj(interp, objv[1], &resultPtr);
-	if (result == TCL_OK) {
-	    Tcl_SetObjResult(interp, resultPtr);
-	    Tcl_DecrRefCount(resultPtr);  /* done with the result object */
-	}
-	return result;
-    }
-
-    /*
-     * Create a new object holding the concatenated argument strings.
-     */
-
-    /*** QUESTION: Do we need to copy the slow way? ***/
-    bytes = Tcl_GetStringFromObj(objv[1], &length);
-    objPtr = Tcl_NewStringObj(bytes, length);
-    Tcl_IncrRefCount(objPtr);
-    for (i = 2;  i < objc;  i++) {
-	Tcl_AppendToObj(objPtr, " ", 1);
-	bytes = Tcl_GetStringFromObj(objv[i], &length);
-	Tcl_AppendToObj(objPtr, bytes, length);
+    } else {
+	Tcl_Obj *objPtr = Tcl_ConcatObj(objc-1, objv+1);
+	Tcl_IncrRefCount(objPtr);
+	result = Tcl_ExprObj(interp, objPtr, &resultPtr);
+	Tcl_DecrRefCount(objPtr);
     }
 
-    /*
-     * Evaluate the concatenated string object.
-     */
-
-    result = Tcl_ExprObj(interp, objPtr, &resultPtr);
     if (result == TCL_OK) {
 	Tcl_SetObjResult(interp, resultPtr);
-	Tcl_DecrRefCount(resultPtr);  /* done with the result object */
+	Tcl_DecrRefCount(resultPtr);	/* Done with the result object */
     }
 
-    /*
-     * Free allocated resources.
-     */
-    
-    Tcl_DecrRefCount(objPtr);
     return result;
 }
 
@@ -777,12 +793,11 @@ Tcl_ExprObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_FileObjCmd --
  *
- *	This procedure is invoked to process the "file" Tcl command.
- *	See the user documentation for details on what it does.
- *	PLEASE NOTE THAT THIS FAILS WITH FILENAMES AND PATHS WITH
- *	EMBEDDED NULLS, WHICH COULD THEORETICALLY HAPPEN ON A MAC.
- *      With the object-based Tcl_FS APIs, the above NOTE may no
- *      longer be true.  In any case this assertion should be tested.
+ *	This procedure is invoked to process the "file" Tcl command. See the
+ *	user documentation for details on what it does. PLEASE NOTE THAT THIS
+ *	FAILS WITH FILENAMES AND PATHS WITH EMBEDDED NULLS. With the
+ *	object-based Tcl_FS APIs, the above NOTE may no longer be true. In any
+ *	case this assertion should be tested.
  *
  * Results:
  *	A standard Tcl result.
@@ -795,607 +810,569 @@ Tcl_ExprObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_FileObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_FileObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int index;
+    int index, value;
+    Tcl_StatBuf buf;
+    struct utimbuf tval;
 
-/*
- * This list of constants should match the fileOption string array below.
- */
+    /*
+     * This list of constants should match the fileOption string array below.
+     */
 
-    static CONST char *fileOptions[] = {
+    static const char *fileOptions[] = {
 	"atime",	"attributes",	"channels",	"copy",
 	"delete",
 	"dirname",	"executable",	"exists",	"extension",
 	"isdirectory",	"isfile",	"join",		"link",
-	"lstat",        "mtime",	"mkdir",	"nativename",	
+	"lstat",	"mtime",	"mkdir",	"nativename",
 	"normalize",    "owned",
 	"pathtype",	"readable",	"readlink",	"rename",
-	"rootname",	"separator",    "size",		"split",	
-	"stat",         "system", 
+	"rootname",	"separator",    "size",		"split",
+	"stat",		"system",
 	"tail",		"type",		"volumes",	"writable",
-	(char *) NULL
+	NULL
     };
     enum options {
 	FCMD_ATIME,	FCMD_ATTRIBUTES, FCMD_CHANNELS,	FCMD_COPY,
 	FCMD_DELETE,
 	FCMD_DIRNAME,	FCMD_EXECUTABLE, FCMD_EXISTS,	FCMD_EXTENSION,
-	FCMD_ISDIRECTORY, FCMD_ISFILE,	FCMD_JOIN,	FCMD_LINK, 
-	FCMD_LSTAT,     FCMD_MTIME,	FCMD_MKDIR,	FCMD_NATIVENAME, 
-	FCMD_NORMALIZE, FCMD_OWNED,
+	FCMD_ISDIRECTORY, FCMD_ISFILE,	FCMD_JOIN,	FCMD_LINK,
+	FCMD_LSTAT,	FCMD_MTIME,	FCMD_MKDIR,	FCMD_NATIVENAME,
+	FCMD_NORMALIZE,	FCMD_OWNED,
 	FCMD_PATHTYPE,	FCMD_READABLE,	FCMD_READLINK,	FCMD_RENAME,
-	FCMD_ROOTNAME,	FCMD_SEPARATOR, FCMD_SIZE,	FCMD_SPLIT,	
-	FCMD_STAT,      FCMD_SYSTEM, 
+	FCMD_ROOTNAME,	FCMD_SEPARATOR,	FCMD_SIZE,	FCMD_SPLIT,
+	FCMD_STAT,	FCMD_SYSTEM,
 	FCMD_TAIL,	FCMD_TYPE,	FCMD_VOLUMES,	FCMD_WRITABLE
     };
 
     if (objc < 2) {
-    	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
+	return TCL_ERROR;
     }
     if (Tcl_GetIndexFromObj(interp, objv[1], fileOptions, "option", 0,
 	    &index) != TCL_OK) {
-    	return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     switch ((enum options) index) {
-    	case FCMD_ATIME: {
-	    Tcl_StatBuf buf;
-	    struct utimbuf tval;
 
-	    if ((objc < 3) || (objc > 4)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "name ?time?");
-		return TCL_ERROR;
-	    }
-	    if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
+    case FCMD_ATIME:
+    case FCMD_MTIME:
+	if ((objc < 3) || (objc > 4)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name ?time?");
+	    return TCL_ERROR;
+	}
+	if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (objc == 4) {
+	    /*
+	     * Need separate variable for reading longs from an object on
+	     * 64-bit platforms. [Bug #698146]
+	     */
+
+	    long newTime;
+
+	    if (TclGetLongFromObj(interp, objv[3], &newTime) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    if (objc == 4) {
-		long newTime;
 
-		if (Tcl_GetLongFromObj(interp, objv[3], &newTime) != TCL_OK) {
-		    return TCL_ERROR;
-		}
+	    if (index == FCMD_ATIME) {
 		tval.actime = newTime;
 		tval.modtime = buf.st_mtime;
-		if (Tcl_FSUtime(objv[2], &tval) != 0) {
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			    "could not set access time for file \"",
-			    Tcl_GetString(objv[2]), "\": ",
-			    Tcl_PosixError(interp), (char *) NULL);
-		    return TCL_ERROR;
-		}
-		/*
-		 * Do another stat to ensure that the we return the
-		 * new recognized atime - hopefully the same as the
-		 * one we sent in.  However, fs's like FAT don't
-		 * even know what atime is.
-		 */
-		if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
-		    return TCL_ERROR;
-		}
+	    } else {	/* index == FCMD_MTIME */
+		tval.actime = buf.st_atime;
+		tval.modtime = newTime;
 	    }
-	    Tcl_SetLongObj(Tcl_GetObjResult(interp), (long) buf.st_atime);
-	    return TCL_OK;
-	}
-	case FCMD_ATTRIBUTES: {
-            return TclFileAttrsCmd(interp, objc, objv);
-	}
-	case FCMD_CHANNELS: {
-	    if ((objc < 2) || (objc > 3)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
+
+	    if (Tcl_FSUtime(objv[2], &tval) != 0) {
+		Tcl_AppendResult(interp, "could not set ",
+			(index == FCMD_ATIME ? "access" : "modification"),
+			" time for file \"", TclGetString(objv[2]), "\": ",
+			Tcl_PosixError(interp), NULL);
 		return TCL_ERROR;
 	    }
-	    return Tcl_GetChannelNamesEx(interp,
-		    ((objc == 2) ? NULL : Tcl_GetString(objv[2])));
-	}
-	case FCMD_COPY: {
-	    return TclFileCopyCmd(interp, objc, objv);
-	}	    
-	case FCMD_DELETE: {
-	    return TclFileDeleteCmd(interp, objc, objv);
-	}
-    	case FCMD_DIRNAME: {
-	    Tcl_Obj *dirPtr;
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    dirPtr = TclFileDirname(interp, objv[2]);
-	    if (dirPtr == NULL) {
-	        return TCL_ERROR;
-	    } else {
-		Tcl_SetObjResult(interp, dirPtr);
-		Tcl_DecrRefCount(dirPtr);
-		return TCL_OK;
+
+	    /*
+	     * Do another stat to ensure that the we return the new recognized
+	     * atime - hopefully the same as the one we sent in. However, fs's
+	     * like FAT don't even know what atime is.
+	     */
+
+	    if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
+		return TCL_ERROR;
 	    }
 	}
-	case FCMD_EXECUTABLE: {
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    return CheckAccess(interp, objv[2], X_OK);
+
+	Tcl_SetObjResult(interp, Tcl_NewLongObj((long)
+		(index == FCMD_ATIME ? buf.st_atime : buf.st_mtime)));
+	return TCL_OK;
+    case FCMD_ATTRIBUTES:
+	return TclFileAttrsCmd(interp, objc, objv);
+    case FCMD_CHANNELS:
+	if ((objc < 2) || (objc > 3)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
+	    return TCL_ERROR;
 	}
-	case FCMD_EXISTS: {
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    return CheckAccess(interp, objv[2], F_OK);
+	return Tcl_GetChannelNamesEx(interp,
+		((objc == 2) ? NULL : TclGetString(objv[2])));
+    case FCMD_COPY:
+	return TclFileCopyCmd(interp, objc, objv);
+    case FCMD_DELETE:
+	return TclFileDeleteCmd(interp, objc, objv);
+    case FCMD_DIRNAME: {
+	Tcl_Obj *dirPtr;
+
+	if (objc != 3) {
+	    goto only3Args;
 	}
-	case FCMD_EXTENSION: {
-	    char *fileName, *extension;
-	    if (objc != 3) {
-	    	goto only3Args;
-	    }
-	    fileName = Tcl_GetString(objv[2]);
-	    extension = TclGetExtension(fileName);
-	    if (extension != NULL) {
-	    	Tcl_SetStringObj(Tcl_GetObjResult(interp), extension, -1);
-	    }
+	dirPtr = TclPathPart(interp, objv[2], TCL_PATH_DIRNAME);
+	if (dirPtr == NULL) {
+	    return TCL_ERROR;
+	} else {
+	    Tcl_SetObjResult(interp, dirPtr);
+	    Tcl_DecrRefCount(dirPtr);
 	    return TCL_OK;
 	}
-    	case FCMD_ISDIRECTORY: {
-	    int value;
-	    Tcl_StatBuf buf;
-
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    value = 0;
-	    if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
-		value = S_ISDIR(buf.st_mode);
-	    }
-	    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), value);
+    }
+    case FCMD_EXECUTABLE:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	return CheckAccess(interp, objv[2], X_OK);
+    case FCMD_EXISTS:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	return CheckAccess(interp, objv[2], F_OK);
+    case FCMD_EXTENSION: {
+	Tcl_Obj *ext;
+
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	ext = TclPathPart(interp, objv[2], TCL_PATH_EXTENSION);
+	if (ext != NULL) {
+	    Tcl_SetObjResult(interp, ext);
+	    Tcl_DecrRefCount(ext);
 	    return TCL_OK;
+	} else {
+	    return TCL_ERROR;
 	}
-    	case FCMD_ISFILE: {
-	    int value;
-	    Tcl_StatBuf buf;
-	    
-    	    if (objc != 3) {
-    	    	goto only3Args;
-    	    }
-	    value = 0;
-	    if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
-		value = S_ISREG(buf.st_mode);
-	    }
-	    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), value);
-	    return TCL_OK;
+    }
+    case FCMD_ISDIRECTORY:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	value = 0;
+	if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
+	    value = S_ISDIR(buf.st_mode);
 	}
-	case FCMD_JOIN: {
-	    Tcl_Obj *resObj;
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
+	return TCL_OK;
+    case FCMD_ISFILE:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	value = 0;
+	if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
+	    value = S_ISREG(buf.st_mode);
+	}
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
+	return TCL_OK;
+    case FCMD_OWNED:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	value = 0;
+	if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
+	    /*
+	     * For Windows, there are no user ids associated with a file, so
+	     * we always return 1.
+	     */
 
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "name ?name ...?");
-		return TCL_ERROR;
-	    }
-	    resObj = Tcl_FSJoinToPath(NULL, objc - 2, objv + 2);
-	    Tcl_SetObjResult(interp, resObj);
-	    return TCL_OK;
+#if defined(__WIN32__) || defined(__CYGWIN__)
+	    value = 1;
+#else
+	    value = (geteuid() == buf.st_uid);
+#endif
 	}
-	case FCMD_LINK: {
-	    Tcl_Obj *contents;
-	    int index;
-	    
-	    if (objc < 3 || objc > 5) {
-		Tcl_WrongNumArgs(interp, 2, objv, 
-				 "?-linktype? linkname ?target?");
-		return TCL_ERROR;
-	    }
-	    
-	    /* Index of the 'source' argument */
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
+	return TCL_OK;
+    case FCMD_JOIN: {
+	Tcl_Obj *resObj;
+
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name ?name ...?");
+	    return TCL_ERROR;
+	}
+	resObj = Tcl_FSJoinToPath(NULL, objc - 2, objv + 2);
+	Tcl_SetObjResult(interp, resObj);
+	return TCL_OK;
+    }
+    case FCMD_LINK: {
+	Tcl_Obj *contents;
+	int index;
+
+	if (objc < 3 || objc > 5) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?-linktype? linkname ?target?");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Index of the 'source' argument.
+	 */
+
+	if (objc == 5) {
+	    index = 3;
+	} else {
+	    index = 2;
+	}
+
+	if (objc > 3) {
+	    int linkAction;
 	    if (objc == 5) {
-		index = 3;
-	    } else {
-		index = 2;
-	    }
-	    
-	    if (objc > 3) {
-		int linkAction;
-		if (objc == 5) {
-		    /* We have a '-linktype' argument */
-		    static CONST char *linkTypes[] = {
-			"-symbolic", "-hard", NULL
-		    };
-		    if (Tcl_GetIndexFromObj(interp, objv[2], linkTypes, 
-				     "switch", 0, &linkAction) != TCL_OK) {
-			return TCL_ERROR;
-		    }
-		    if (linkAction == 0) {
-		        linkAction = TCL_CREATE_SYMBOLIC_LINK;
-		    } else {
-			linkAction = TCL_CREATE_HARD_LINK;
-		    }
-		} else {
-		    linkAction = TCL_CREATE_SYMBOLIC_LINK|TCL_CREATE_HARD_LINK;
-		}
-		if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
+		/*
+		 * We have a '-linktype' argument.
+		 */
+
+		static const char *linkTypes[] = {
+		    "-symbolic", "-hard", NULL
+		};
+		if (Tcl_GetIndexFromObj(interp, objv[2], linkTypes, "switch",
+			0, &linkAction) != TCL_OK) {
 		    return TCL_ERROR;
 		}
-		/* Create link from source to target */
-		contents = Tcl_FSLink(objv[index], objv[index+1], linkAction);
-		if (contents == NULL) {
-		    /* 
-		     * We handle two common error cases specially, and
-		     * for all other errors, we use the standard posix
-		     * error message.
-		     */
-		    if (errno == EEXIST) {
-			Tcl_AppendResult(interp, "could not create new link \"", 
-				Tcl_GetString(objv[index]), 
-				"\": that path already exists", (char *) NULL);
-		    } else if (errno == ENOENT) {
-			Tcl_AppendResult(interp, "could not create new link \"", 
-				Tcl_GetString(objv[index]), 
-				"\" since target \"", 
-				Tcl_GetString(objv[index+1]), 
-				"\" doesn't exist", 
-				(char *) NULL);
-		    } else {
-			Tcl_AppendResult(interp, "could not create new link \"", 
-				Tcl_GetString(objv[index]), "\" pointing to \"", 
-				Tcl_GetString(objv[index+1]), "\": ", 
-				Tcl_PosixError(interp), (char *) NULL);
-		    }
-		    return TCL_ERROR;
+		if (linkAction == 0) {
+		    linkAction = TCL_CREATE_SYMBOLIC_LINK;
+		} else {
+		    linkAction = TCL_CREATE_HARD_LINK;
 		}
 	    } else {
-		if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		/* Read link */
-		contents = Tcl_FSLink(objv[index], NULL, 0);
-		if (contents == NULL) {
-		    Tcl_AppendResult(interp, "could not read link \"", 
-			    Tcl_GetString(objv[index]), "\": ", 
-			    Tcl_PosixError(interp), (char *) NULL);
-		    return TCL_ERROR;
-		}
+		linkAction = TCL_CREATE_SYMBOLIC_LINK|TCL_CREATE_HARD_LINK;
 	    }
-	    Tcl_SetObjResult(interp, contents);
-	    if (objc == 3) {
-		/* 
-		 * If we are reading a link, we need to free this
-		 * result refCount.  If we are creating a link, this
-		 * will just be objv[index+1], and so we don't own it.
-		 */
-		Tcl_DecrRefCount(contents);
-	    }
-	    return TCL_OK;
-	}
-    	case FCMD_LSTAT: {
-	    char *varName;
-	    Tcl_StatBuf buf;
-
-    	    if (objc != 4) {
-    	    	Tcl_WrongNumArgs(interp, 2, objv, "name varName");
-    	    	return TCL_ERROR;
-    	    }
-	    if (GetStatBuf(interp, objv[2], Tcl_FSLstat, &buf) != TCL_OK) {
+	    if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    varName = Tcl_GetString(objv[3]);
-	    return StoreStatData(interp, varName, &buf);
-	}
-	case FCMD_MTIME: {
-	    Tcl_StatBuf buf;
-	    struct utimbuf tval;
 
-	    if ((objc < 3) || (objc > 4)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "name ?time?");
-		return TCL_ERROR;
-	    }
-	    if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    if (objc == 4) {
-		long newTime;
+	    /*
+	     * Create link from source to target.
+	     */
 
-		if (Tcl_GetLongFromObj(interp, objv[3], &newTime) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		tval.actime = buf.st_atime;
-		tval.modtime = newTime;
-		if (Tcl_FSUtime(objv[2], &tval) != 0) {
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			    "could not set modification time for file \"",
-			    Tcl_GetString(objv[2]), "\": ",
-			    Tcl_PosixError(interp), (char *) NULL);
-		    return TCL_ERROR;
-		}
+	    contents = Tcl_FSLink(objv[index], objv[index+1], linkAction);
+	    if (contents == NULL) {
 		/*
-		 * Do another stat to ensure that the we return the
-		 * new recognized atime - hopefully the same as the
-		 * one we sent in.  However, fs's like FAT don't
-		 * even know what atime is.
+		 * We handle three common error cases specially, and for all
+		 * other errors, we use the standard posix error message.
 		 */
-		if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
-		    return TCL_ERROR;
+
+		if (errno == EEXIST) {
+		    Tcl_AppendResult(interp, "could not create new link \"",
+			    TclGetString(objv[index]),
+			    "\": that path already exists", NULL);
+		} else if (errno == ENOENT) {
+		    /*
+		     * There are two cases here: either the target doesn't
+		     * exist, or the directory of the src doesn't exist.
+		     */
+
+		    int access;
+		    Tcl_Obj *dirPtr = TclPathPart(interp, objv[index],
+			    TCL_PATH_DIRNAME);
+
+		    if (dirPtr == NULL) {
+			return TCL_ERROR;
+		    }
+		    access = Tcl_FSAccess(dirPtr, F_OK);
+		    Tcl_DecrRefCount(dirPtr);
+		    if (access != 0) {
+			Tcl_AppendResult(interp,
+				"could not create new link \"",
+				TclGetString(objv[index]),
+				"\": no such file or directory", NULL);
+		    } else {
+			Tcl_AppendResult(interp,
+				"could not create new link \"",
+				TclGetString(objv[index]), "\": target \"",
+				TclGetString(objv[index+1]),
+				"\" doesn't exist", NULL);
+		    }
+		} else {
+		    Tcl_AppendResult(interp,
+			    "could not create new link \"",
+			    TclGetString(objv[index]), "\" pointing to \"",
+			    TclGetString(objv[index+1]), "\": ",
+			    Tcl_PosixError(interp), NULL);
 		}
-	    }
-	    Tcl_SetLongObj(Tcl_GetObjResult(interp), (long) buf.st_mtime);
-	    return TCL_OK;
-	}
-	case FCMD_MKDIR: {
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "name ?name ...?");
 		return TCL_ERROR;
 	    }
-	    return TclFileMakeDirsCmd(interp, objc, objv);
-	}
-	case FCMD_NATIVENAME: {
-	    CONST char *fileName;
-	    Tcl_DString ds;
-
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    fileName = Tcl_GetString(objv[2]);
-	    fileName = Tcl_TranslateFileName(interp, fileName, &ds);
-	    if (fileName == NULL) {
+	} else {
+	    if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    Tcl_SetStringObj(Tcl_GetObjResult(interp), fileName, 
-			     Tcl_DStringLength(&ds));
-	    Tcl_DStringFree(&ds);
-	    return TCL_OK;
-	}
-	case FCMD_NORMALIZE: {
-	    Tcl_Obj *fileName;
 
-	    if (objc != 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "filename");
-		return TCL_ERROR;
-	    }
+	    /*
+	     * Read link
+	     */
 
-	    fileName = Tcl_FSGetNormalizedPath(interp, objv[2]);
-	    if (fileName == NULL) {
+	    contents = Tcl_FSLink(objv[index], NULL, 0);
+	    if (contents == NULL) {
+		Tcl_AppendResult(interp, "could not read link \"",
+			TclGetString(objv[index]), "\": ",
+			Tcl_PosixError(interp), NULL);
 		return TCL_ERROR;
 	    }
-	    Tcl_SetObjResult(interp, fileName);
-	    return TCL_OK;
 	}
-	case FCMD_OWNED: {
-	    int value;
-	    Tcl_StatBuf buf;
-	    
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    value = 0;
-	    if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
-		/*
-		 * For Windows there are no user ids 
-		 * associated with a file, so we always return 1.
-		 */
+	Tcl_SetObjResult(interp, contents);
+	if (objc == 3) {
+	    /*
+	     * If we are reading a link, we need to free this result refCount.
+	     * If we are creating a link, this will just be objv[index+1], and
+	     * so we don't own it.
+	     */
 
-#if defined(__WIN32__) || defined(__CYGWIN__)
-		value = 1;
-#else
-		value = (geteuid() == buf.st_uid);
-#endif
-	    }	    
-	    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), value);
-	    return TCL_OK;
+	    Tcl_DecrRefCount(contents);
 	}
-	case FCMD_PATHTYPE: {
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    switch (Tcl_FSGetPathType(objv[2])) {
-	    	case TCL_PATH_ABSOLUTE:
-	    	    Tcl_SetStringObj(Tcl_GetObjResult(interp), "absolute", -1);
-		    break;
-	    	case TCL_PATH_RELATIVE:
-	    	    Tcl_SetStringObj(Tcl_GetObjResult(interp), "relative", -1);
-	    	    break;
-	    	case TCL_PATH_VOLUME_RELATIVE:
-		    Tcl_SetStringObj(Tcl_GetObjResult(interp), 
-				     "volumerelative", -1);
-		    break;
-	    }
-	    return TCL_OK;
+	return TCL_OK;
+    }
+    case FCMD_LSTAT:
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name varName");
+	    return TCL_ERROR;
 	}
-    	case FCMD_READABLE: {
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    return CheckAccess(interp, objv[2], R_OK);
+	if (GetStatBuf(interp, objv[2], Tcl_FSLstat, &buf) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	case FCMD_READLINK: {
-	    Tcl_Obj *contents;
-		
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    
-	    if (Tcl_FSConvertToPathType(interp, objv[2]) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-
-	    contents = Tcl_FSLink(objv[2], NULL, 0);
+	return StoreStatData(interp, objv[3], &buf);
+    case FCMD_STAT:
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name varName");
+	    return TCL_ERROR;
+	}
+	if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	return StoreStatData(interp, objv[3], &buf);
+    case FCMD_SIZE:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp,
+		Tcl_NewWideIntObj((Tcl_WideInt) buf.st_size));
+	return TCL_OK;
+    case FCMD_TYPE:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	if (GetStatBuf(interp, objv[2], Tcl_FSLstat, &buf) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		GetTypeFromMode((unsigned short) buf.st_mode), -1));
+	return TCL_OK;
+    case FCMD_MKDIR:
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name ?name ...?");
+	    return TCL_ERROR;
+	}
+	return TclFileMakeDirsCmd(interp, objc, objv);
+    case FCMD_NATIVENAME: {
+	const char *fileName;
+	Tcl_DString ds;
 
-	    if (contents == NULL) {
-	    	Tcl_AppendResult(interp, "could not readlink \"", 
-	    		Tcl_GetString(objv[2]), "\": ", 
-	    		Tcl_PosixError(interp), (char *) NULL);
-	    	return TCL_ERROR;
-	    }
-	    Tcl_SetObjResult(interp, contents);
-	    Tcl_DecrRefCount(contents);
-	    return TCL_OK;
+	if (objc != 3) {
+	    goto only3Args;
 	}
-	case FCMD_RENAME: {
-	    return TclFileRenameCmd(interp, objc, objv);
+	fileName = TclGetString(objv[2]);
+	fileName = Tcl_TranslateFileName(interp, fileName, &ds);
+	if (fileName == NULL) {
+	    return TCL_ERROR;
 	}
-	case FCMD_ROOTNAME: {
-	    int length;
-	    char *fileName, *extension;
-	    
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    fileName = Tcl_GetStringFromObj(objv[2], &length);
-	    extension = TclGetExtension(fileName);
-	    if (extension == NULL) {
-	    	Tcl_SetObjResult(interp, objv[2]);
-	    } else {
-	        Tcl_SetStringObj(Tcl_GetObjResult(interp), fileName,
-			(int) (length - strlen(extension)));
-	    }
-	    return TCL_OK;
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(fileName,
+		Tcl_DStringLength(&ds)));
+	Tcl_DStringFree(&ds);
+	return TCL_OK;
+    }
+    case FCMD_NORMALIZE: {
+	Tcl_Obj *fileName;
+
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "filename");
+	    return TCL_ERROR;
 	}
-	case FCMD_SEPARATOR: {
-	    if ((objc < 2) || (objc > 3)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "?name?");
-		return TCL_ERROR;
-	    }
-	    if (objc == 2) {
-	        char *separator = NULL; /* lint */
-		switch (tclPlatform) {
-		    case TCL_PLATFORM_UNIX:
-			separator = "/";
-			break;
-		    case TCL_PLATFORM_WINDOWS:
-			separator = "\\";
-			break;
-		}
-		Tcl_SetObjResult(interp, Tcl_NewStringObj(separator,1));
-	    } else {
-		Tcl_Obj *separatorObj = Tcl_FSPathSeparator(objv[2]);
-		if (separatorObj != NULL) {
-		    Tcl_SetObjResult(interp, separatorObj);
-		} else {
-		    Tcl_SetObjResult(interp, 
-			    Tcl_NewStringObj("Unrecognised path",-1));
-		    return TCL_ERROR;
-		}
-	    }
-	    return TCL_OK;
+
+	fileName = Tcl_FSGetNormalizedPath(interp, objv[2]);
+	if (fileName == NULL) {
+	    return TCL_ERROR;
 	}
-	case FCMD_SIZE: {
-	    Tcl_StatBuf buf;
-	    
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    Tcl_SetWideIntObj(Tcl_GetObjResult(interp),
-		    (Tcl_WideInt) buf.st_size);
-	    return TCL_OK;
+	Tcl_SetObjResult(interp, fileName);
+	return TCL_OK;
+    }
+    case FCMD_PATHTYPE: {
+	Tcl_Obj *typeName;
+
+	if (objc != 3) {
+	    goto only3Args;
 	}
-	case FCMD_SPLIT: {
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    Tcl_SetObjResult(interp, Tcl_FSSplitPath(objv[2], NULL));
+
+	switch (Tcl_FSGetPathType(objv[2])) {
+	case TCL_PATH_ABSOLUTE:
+	    TclNewLiteralStringObj(typeName, "absolute");
+	    break;
+	case TCL_PATH_RELATIVE:
+	    TclNewLiteralStringObj(typeName, "relative");
+	    break;
+	case TCL_PATH_VOLUME_RELATIVE:
+	    TclNewLiteralStringObj(typeName, "volumerelative");
+	    break;
+	default:
 	    return TCL_OK;
 	}
-	case FCMD_STAT: {
-	    char *varName;
-	    Tcl_StatBuf buf;
-	    
-	    if (objc != 4) {
-	    	Tcl_WrongNumArgs(interp, 1, objv, "stat name varName");
-		return TCL_ERROR;
-	    }
-	    if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    varName = Tcl_GetString(objv[3]);
-	    return StoreStatData(interp, varName, &buf);
+	Tcl_SetObjResult(interp, typeName);
+	return TCL_OK;
+    }
+    case FCMD_READABLE:
+	if (objc != 3) {
+	    goto only3Args;
 	}
-	case FCMD_SYSTEM: {
-	    Tcl_Obj* fsInfo;
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    fsInfo = Tcl_FSFileSystemInfo(objv[2]);
-	    if (fsInfo != NULL) {
-		Tcl_SetObjResult(interp, fsInfo);
-		return TCL_OK;
-	    } else {
-		Tcl_SetObjResult(interp, 
-				 Tcl_NewStringObj("Unrecognised path",-1));
-		return TCL_ERROR;
-	    }
+	return CheckAccess(interp, objv[2], R_OK);
+    case FCMD_READLINK: {
+	Tcl_Obj *contents;
+
+	if (objc != 3) {
+	    goto only3Args;
 	}
-    	case FCMD_TAIL: {
-	    int splitElements;
-	    Tcl_Obj *splitPtr;
 
-	    if (objc != 3) {
-		goto only3Args;
-	    }
-	    /* 
-	     * The behaviour we want here is slightly different to
-	     * the standard Tcl_FSSplitPath in the handling of home
-	     * directories; Tcl_FSSplitPath preserves the "~" while 
-	     * this code computes the actual full path name, if we
-	     * had just a single component.
-	     */	    
-	    splitPtr = Tcl_FSSplitPath(objv[2], &splitElements);
-	    if ((splitElements == 1) && (Tcl_GetString(objv[2])[0] == '~')) {
-		Tcl_DecrRefCount(splitPtr);
-		splitPtr = Tcl_FSGetNormalizedPath(interp, objv[2]);
-		if (splitPtr == NULL) {
-		    return TCL_ERROR;
-		}
-		splitPtr = Tcl_FSSplitPath(splitPtr, &splitElements);
-	    }
+	if (Tcl_FSConvertToPathType(interp, objv[2]) != TCL_OK) {
+	    return TCL_ERROR;
+	}
 
-	    /*
-	     * Return the last component, unless it is the only component,
-	     * and it is the root of an absolute path.
-	     */
+	contents = Tcl_FSLink(objv[2], NULL, 0);
 
-	    if (splitElements > 0) {
-	    	if ((splitElements > 1)
-		  || (Tcl_FSGetPathType(objv[2]) == TCL_PATH_RELATIVE)) {
-		    
-		    Tcl_Obj *tail = NULL;
-		    Tcl_ListObjIndex(NULL, splitPtr, splitElements-1, &tail);
-		    Tcl_SetObjResult(interp, tail);
-	    	}
-	    }
-	    Tcl_DecrRefCount(splitPtr);
+	if (contents == NULL) {
+	    Tcl_AppendResult(interp, "could not readlink \"",
+		    TclGetString(objv[2]), "\": ", Tcl_PosixError(interp),
+		    NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, contents);
+	Tcl_DecrRefCount(contents);
+	return TCL_OK;
+    }
+    case FCMD_RENAME:
+	return TclFileRenameCmd(interp, objc, objv);
+    case FCMD_ROOTNAME: {
+	Tcl_Obj *root;
+
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	root = TclPathPart(interp, objv[2], TCL_PATH_ROOT);
+	if (root != NULL) {
+	    Tcl_SetObjResult(interp, root);
+	    Tcl_DecrRefCount(root);
 	    return TCL_OK;
+	} else {
+	    return TCL_ERROR;
+	}
+    }
+    case FCMD_SEPARATOR:
+	if ((objc < 2) || (objc > 3)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?name?");
+	    return TCL_ERROR;
 	}
-	case FCMD_TYPE: {
-	    Tcl_StatBuf buf;
+	if (objc == 2) {
+	    char *separator = NULL; /* lint */
 
-	    if (objc != 3) {
-	    	goto only3Args;
+	    switch (tclPlatform) {
+	    case TCL_PLATFORM_UNIX:
+		separator = "/";
+		break;
+	    case TCL_PLATFORM_WINDOWS:
+		separator = "\\";
+		break;
 	    }
-	    if (GetStatBuf(interp, objv[2], Tcl_FSLstat, &buf) != TCL_OK) {
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(separator, 1));
+	} else {
+	    Tcl_Obj *separatorObj = Tcl_FSPathSeparator(objv[2]);
+
+	    if (separatorObj == NULL) {
+		Tcl_SetResult(interp, "Unrecognised path", TCL_STATIC);
 		return TCL_ERROR;
 	    }
-	    Tcl_SetStringObj(Tcl_GetObjResult(interp), 
-		    GetTypeFromMode((unsigned short) buf.st_mode), -1);
-	    return TCL_OK;
+	    Tcl_SetObjResult(interp, separatorObj);
 	}
-	case FCMD_VOLUMES: {
-	    if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-	    Tcl_SetObjResult(interp, Tcl_FSListVolumes());
-	    return TCL_OK;
+	return TCL_OK;
+    case FCMD_SPLIT: {
+	Tcl_Obj *res;
+
+	if (objc != 3) {
+	    goto only3Args;
 	}
-	case FCMD_WRITABLE: {
-	    if (objc != 3) {
-	    	goto only3Args;
+	res = Tcl_FSSplitPath(objv[2], NULL);
+	if (res == NULL) {
+	    /* How can the interp be NULL here?! DKF */
+	    if (interp != NULL) {
+		Tcl_AppendResult(interp, "could not read \"",
+			TclGetString(objv[2]),
+			"\": no such file or directory", NULL);
 	    }
-	    return CheckAccess(interp, objv[2], W_OK);
+	    return TCL_ERROR;
 	}
+	Tcl_SetObjResult(interp, res);
+	return TCL_OK;
     }
+    case FCMD_SYSTEM: {
+	Tcl_Obj *fsInfo;
 
-    only3Args:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	fsInfo = Tcl_FSFileSystemInfo(objv[2]);
+	if (fsInfo == NULL) {
+	    Tcl_SetResult(interp, "Unrecognised path", TCL_STATIC);
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, fsInfo);
+	return TCL_OK;
+    }
+    case FCMD_TAIL: {
+	Tcl_Obj *dirPtr;
+
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	dirPtr = TclPathPart(interp, objv[2], TCL_PATH_TAIL);
+	if (dirPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, dirPtr);
+	Tcl_DecrRefCount(dirPtr);
+	return TCL_OK;
+    }
+    case FCMD_VOLUMES:
+	if (objc != 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, Tcl_FSListVolumes());
+	return TCL_OK;
+    case FCMD_WRITABLE:
+	if (objc != 3) {
+	    goto only3Args;
+	}
+	return CheckAccess(interp, objv[2], W_OK);
+    }
+
+  only3Args:
     Tcl_WrongNumArgs(interp, 2, objv, "name");
     return TCL_ERROR;
 }
@@ -1405,35 +1382,35 @@ Tcl_FileObjCmd(dummy, interp, objc, objv)
  *
  * CheckAccess --
  *
- *	Utility procedure used by Tcl_FileObjCmd() to query file
- *	attributes available through the access() system call.
+ *	Utility procedure used by Tcl_FileObjCmd() to query file attributes
+ *	available through the access() system call.
  *
  * Results:
- *	Always returns TCL_OK.  Sets interp's result to boolean true or
- *	false depending on whether the file has the specified attribute.
+ *	Always returns TCL_OK. Sets interp's result to boolean true or false
+ *	depending on whether the file has the specified attribute.
  *
  * Side effects:
  *	None.
  *
  *---------------------------------------------------------------------------
  */
-  
+
 static int
-CheckAccess(interp, objPtr, mode)
-    Tcl_Interp *interp;		/* Interp for status return.  Must not be
+CheckAccess(
+    Tcl_Interp *interp,		/* Interp for status return. Must not be
 				 * NULL. */
-    Tcl_Obj *objPtr;		/* Name of file to check. */
-    int mode;			/* Attribute to check; passed as argument to
+    Tcl_Obj *pathPtr,		/* Name of file to check. */
+    int mode)			/* Attribute to check; passed as argument to
 				 * access(). */
 {
     int value;
-    
-    if (Tcl_FSConvertToPathType(interp, objPtr) != TCL_OK) {
+
+    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
 	value = 0;
     } else {
-	value = (Tcl_FSAccess(objPtr, mode) == 0);
+	value = (Tcl_FSAccess(pathPtr, mode) == 0);
     }
-    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), value);
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
 
     return TCL_OK;
 }
@@ -1443,14 +1420,14 @@ CheckAccess(interp, objPtr, mode)
  *
  * GetStatBuf --
  *
- *	Utility procedure used by Tcl_FileObjCmd() to query file
- *	attributes available through the stat() or lstat() system call.
+ *	Utility procedure used by Tcl_FileObjCmd() to query file attributes
+ *	available through the stat() or lstat() system call.
  *
  * Results:
- *	The return value is TCL_OK if the specified file exists and can
- *	be stat'ed, TCL_ERROR otherwise.  If TCL_ERROR is returned, an
- *	error message is left in interp's result.  If TCL_OK is returned,
- *	*statPtr is filled with information about the specified file.
+ *	The return value is TCL_OK if the specified file exists and can be
+ *	stat'ed, TCL_ERROR otherwise. If TCL_ERROR is returned, an error
+ *	message is left in interp's result. If TCL_OK is returned, *statPtr is
+ *	filled with information about the specified file.
  *
  * Side effects:
  *	None.
@@ -1459,27 +1436,27 @@ CheckAccess(interp, objPtr, mode)
  */
 
 static int
-GetStatBuf(interp, objPtr, statProc, statPtr)
-    Tcl_Interp *interp;		/* Interp for error return.  May be NULL. */
-    Tcl_Obj *objPtr;		/* Path name to examine. */
-    Tcl_FSStatProc *statProc;	/* Either stat() or lstat() depending on
+GetStatBuf(
+    Tcl_Interp *interp,		/* Interp for error return. May be NULL. */
+    Tcl_Obj *pathPtr,		/* Path name to examine. */
+    Tcl_FSStatProc *statProc,	/* Either stat() or lstat() depending on
 				 * desired behavior. */
-    Tcl_StatBuf *statPtr;	/* Filled with info about file obtained by
+    Tcl_StatBuf *statPtr)	/* Filled with info about file obtained by
 				 * calling (*statProc)(). */
 {
     int status;
-    
-    if (Tcl_FSConvertToPathType(interp, objPtr) != TCL_OK) {
+
+    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
 	return TCL_ERROR;
     }
 
-    status = (*statProc)(objPtr, statPtr);
-    
+    status = (*statProc)(pathPtr, statPtr);
+
     if (status < 0) {
 	if (interp != NULL) {
 	    Tcl_AppendResult(interp, "could not read \"",
-		    Tcl_GetString(objPtr), "\": ",
-		    Tcl_PosixError(interp), (char *) NULL);
+		    TclGetString(pathPtr), "\": ",
+		    Tcl_PosixError(interp), NULL);
 	}
 	return TCL_ERROR;
     }
@@ -1491,13 +1468,13 @@ GetStatBuf(interp, objPtr, statProc, statPtr)
  *
  * StoreStatData --
  *
- *	This is a utility procedure that breaks out the fields of a
- *	"stat" structure and stores them in textual form into the
- *	elements of an associative array.
+ *	This is a utility procedure that breaks out the fields of a "stat"
+ *	structure and stores them in textual form into the elements of an
+ *	associative array.
  *
  * Results:
- *	Returns a standard Tcl return value.  If an error occurs then
- *	a message is left in interp's result.
+ *	Returns a standard Tcl return value. If an error occurs then a message
+ *	is left in interp's result.
  *
  * Side effects:
  *	Elements of the associative array given by "varName" are modified.
@@ -1506,56 +1483,59 @@ GetStatBuf(interp, objPtr, statProc, statPtr)
  */
 
 static int
-StoreStatData(interp, varName, statPtr)
-    Tcl_Interp *interp;			/* Interpreter for error reports. */
-    char *varName;			/* Name of associative array variable
-					 * in which to store stat results. */
-    Tcl_StatBuf *statPtr;		/* Pointer to buffer containing
-					 * stat data to store in varName. */
+StoreStatData(
+    Tcl_Interp *interp,		/* Interpreter for error reports. */
+    Tcl_Obj *varName,		/* Name of associative array variable in which
+				 * to store stat results. */
+    Tcl_StatBuf *statPtr)	/* Pointer to buffer containing stat data to
+				 * store in varName. */
 {
-    Tcl_Obj *var = Tcl_NewStringObj(varName, -1);
-    Tcl_Obj *field = Tcl_NewObj();
-    Tcl_Obj *value;
+    Tcl_Obj *field, *value;
     register unsigned short mode;
 
     /*
      * Assume Tcl_ObjSetVar2() does not keep a copy of the field name!
+     *
+     * Might be a better idea to call Tcl_SetVar2Ex() instead, except we want
+     * to have an object (i.e. possibly cached) array variable name but a
+     * string element name, so no API exists. Messy.
      */
+
 #define STORE_ARY(fieldName, object) \
-    Tcl_SetStringObj(field, (fieldName), -1); \
-    value = (object); \
-    if (Tcl_ObjSetVar2(interp,var,field,value,TCL_LEAVE_ERR_MSG) == NULL) { \
-	Tcl_DecrRefCount(var); \
-	Tcl_DecrRefCount(field); \
-	Tcl_DecrRefCount(value); \
-	return TCL_ERROR; \
-    }
-
-    Tcl_IncrRefCount(var);
-    Tcl_IncrRefCount(field);
-    STORE_ARY("dev",   Tcl_NewLongObj((long)statPtr->st_dev));
+    TclNewLiteralStringObj(field, fieldName);				\
+    Tcl_IncrRefCount(field);						\
+    value = (object);							\
+    if (Tcl_ObjSetVar2(interp,varName,field,value,TCL_LEAVE_ERR_MSG)==NULL) { \
+	TclDecrRefCount(field);						\
+	return TCL_ERROR;						\
+    }									\
+    TclDecrRefCount(field);
+
     /*
-     * Watch out porters; the inode is meant to be an *unsigned* value,
-     * so the cast might fail when there isn't a real arithmentic 'long
-     * long' type...
+     * Watch out porters; the inode is meant to be an *unsigned* value, so the
+     * cast might fail when there isn't a real arithmentic 'long long' type...
      */
-    STORE_ARY("ino",   Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_ino));
-    STORE_ARY("nlink", Tcl_NewLongObj((long)statPtr->st_nlink));
-    STORE_ARY("uid",   Tcl_NewLongObj((long)statPtr->st_uid));
-    STORE_ARY("gid",   Tcl_NewLongObj((long)statPtr->st_gid));
-    STORE_ARY("size",  Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_size));
-#ifdef HAVE_ST_BLOCKS
-    STORE_ARY("blocks",Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_blocks));
+
+    STORE_ARY("dev",	Tcl_NewLongObj((long)statPtr->st_dev));
+    STORE_ARY("ino",	Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_ino));
+    STORE_ARY("nlink",	Tcl_NewLongObj((long)statPtr->st_nlink));
+    STORE_ARY("uid",	Tcl_NewLongObj((long)statPtr->st_uid));
+    STORE_ARY("gid",	Tcl_NewLongObj((long)statPtr->st_gid));
+    STORE_ARY("size",	Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_size));
+#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
+    STORE_ARY("blocks",	Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_blocks));
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+    STORE_ARY("blksize", Tcl_NewLongObj((long)statPtr->st_blksize));
 #endif
-    STORE_ARY("atime", Tcl_NewLongObj((long)statPtr->st_atime));
-    STORE_ARY("mtime", Tcl_NewLongObj((long)statPtr->st_mtime));
-    STORE_ARY("ctime", Tcl_NewLongObj((long)statPtr->st_ctime));
+    STORE_ARY("atime",	Tcl_NewLongObj((long)statPtr->st_atime));
+    STORE_ARY("mtime",	Tcl_NewLongObj((long)statPtr->st_mtime));
+    STORE_ARY("ctime",	Tcl_NewLongObj((long)statPtr->st_ctime));
     mode = (unsigned short) statPtr->st_mode;
-    STORE_ARY("mode",  Tcl_NewIntObj(mode));
-    STORE_ARY("type",  Tcl_NewStringObj(GetTypeFromMode(mode), -1));
+    STORE_ARY("mode",	Tcl_NewIntObj(mode));
+    STORE_ARY("type",	Tcl_NewStringObj(GetTypeFromMode(mode), -1));
 #undef STORE_ARY
-    Tcl_DecrRefCount(var);
-    Tcl_DecrRefCount(field);
+
     return TCL_OK;
 }
 
@@ -1564,8 +1544,7 @@ StoreStatData(interp, varName, statPtr)
  *
  * GetTypeFromMode --
  *
- *	Given a mode word, returns a string identifying the type of a
- *	file.
+ *	Given a mode word, returns a string identifying the type of a file.
  *
  * Results:
  *	A static text string giving the file type from mode.
@@ -1577,8 +1556,8 @@ StoreStatData(interp, varName, statPtr)
  */
 
 static char *
-GetTypeFromMode(mode)
-    int mode;
+GetTypeFromMode(
+    int mode)
 {
     if (S_ISREG(mode)) {
 	return "file";
@@ -1607,103 +1586,98 @@ GetTypeFromMode(mode)
  *
  * Tcl_ForObjCmd --
  *
- *      This procedure is invoked to process the "for" Tcl command.
- *      See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "for" Tcl command. See the
+ *	user documentation for details on what it does.
  *
- *	With the bytecode compiler, this procedure is only called when
- *	a command name is computed at runtime, and is "for" or the name
- *	to which "for" was renamed: e.g.,
+ *	With the bytecode compiler, this procedure is only called when a
+ *	command name is computed at runtime, and is "for" or the name to which
+ *	"for" was renamed: e.g.,
  *	"set z for; $z {set i 0} {$i<100} {incr i} {puts $i}"
  *
  * Results:
- *      A standard Tcl result.
+ *	A standard Tcl result.
  *
  * Side effects:
- *      See the user documentation.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-        /* ARGSUSED */
+	/* ARGSUSED */
 int
-Tcl_ForObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;                   /* Not used. */
-    Tcl_Interp *interp;                 /* Current interpreter. */
-    int objc;                           /* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ForObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int result, value;
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    Interp *iPtr = (Interp *) interp;
 
     if (objc != 5) {
-        Tcl_WrongNumArgs(interp, 1, objv, "start test next command");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "start test next command");
+	return TCL_ERROR;
     }
 
-#ifndef TCL_TIP280
-    result = Tcl_EvalObjEx(interp, objv[1], 0);
-#else
-    /* TIP #280. Make invoking context available to initial script */
-    result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr,1);
-#endif
+    /*
+     * TIP #280. Make invoking context available to initial script.
+     */
+
+    result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1);
     if (result != TCL_OK) {
-        if (result == TCL_ERROR) {
-            Tcl_AddErrorInfo(interp, "\n    (\"for\" initial command)");
-        }
-        return result;
+	if (result == TCL_ERROR) {
+	    Tcl_AddErrorInfo(interp, "\n    (\"for\" initial command)");
+	}
+	return result;
     }
     while (1) {
 	/*
 	 * We need to reset the result before passing it off to
-	 * Tcl_ExprBooleanObj.  Otherwise, any error message will be appended
+	 * Tcl_ExprBooleanObj. Otherwise, any error message will be appended
 	 * to the result of the last evaluation.
 	 */
 
 	Tcl_ResetResult(interp);
-        result = Tcl_ExprBooleanObj(interp, objv[2], &value);
-        if (result != TCL_OK) {
-            return result;
-        }
-        if (!value) {
-            break;
-        }
-#ifndef TCL_TIP280
-        result = Tcl_EvalObjEx(interp, objv[4], 0);
-#else
-	/* TIP #280. Make invoking context available to loop body */
-        result = TclEvalObjEx(interp, objv[4], 0, iPtr->cmdFramePtr,4);
-#endif
-        if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
-            if (result == TCL_ERROR) {
-                char msg[32 + TCL_INTEGER_SPACE];
-
-                sprintf(msg, "\n    (\"for\" body line %d)",interp->errorLine);
-                Tcl_AddErrorInfo(interp, msg);
-            }
-            break;
-        }
-#ifndef TCL_TIP280
-        result = Tcl_EvalObjEx(interp, objv[3], 0);
-#else
-	/* TIP #280. Make invoking context available to next script */
-        result = TclEvalObjEx(interp, objv[3], 0, iPtr->cmdFramePtr,3);
-#endif
+	result = Tcl_ExprBooleanObj(interp, objv[2], &value);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	if (!value) {
+	    break;
+	}
+
+	/*
+	 * TIP #280. Make invoking context available to loop body.
+	 */
+
+	result = TclEvalObjEx(interp, objv[4], 0, iPtr->cmdFramePtr, 4);
+	if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
+	    if (result == TCL_ERROR) {
+		Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			"\n    (\"for\" body line %d)", interp->errorLine));
+	    }
+	    break;
+	}
+
+	/*
+	 * TIP #280. Make invoking context available to next script.
+	 */
+
+	result = TclEvalObjEx(interp, objv[3], 0, iPtr->cmdFramePtr, 3);
 	if (result == TCL_BREAK) {
-            break;
-        } else if (result != TCL_OK) {
-            if (result == TCL_ERROR) {
-                Tcl_AddErrorInfo(interp, "\n    (\"for\" loop-end command)");
-            }
-            return result;
-        }
+	    break;
+	} else if (result != TCL_OK) {
+	    if (result == TCL_ERROR) {
+		Tcl_AddErrorInfo(interp, "\n    (\"for\" loop-end command)");
+	    }
+	    return result;
+	}
     }
     if (result == TCL_BREAK) {
-        result = TCL_OK;
+	result = TCL_OK;
     }
     if (result == TCL_OK) {
-        Tcl_ResetResult(interp);
+	Tcl_ResetResult(interp);
     }
     return result;
 }
@@ -1714,7 +1688,7 @@ Tcl_ForObjCmd(dummy, interp, objc, objv)
  * Tcl_ForeachObjCmd --
  *
  *	This object-based procedure is invoked to process the "foreach" Tcl
- *	command.  See the user documentation for details on what it does.
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -1727,45 +1701,27 @@ Tcl_ForObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ForeachObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ForeachObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int result = TCL_OK;
     int i;			/* i selects a value list */
     int j, maxj;		/* Number of loop iterations */
     int v;			/* v selects a loop variable */
-    int numLists;		/* Count of value lists */
+    int numLists = (objc-2)/2;	/* Count of value lists */
     Tcl_Obj *bodyPtr;
+    Interp *iPtr = (Interp *) interp;
 
-    /*
-     * We copy the argument object pointers into a local array to avoid
-     * the problem that "objv" might become invalid. It is a pointer into
-     * the evaluation stack and that stack might be grown and reallocated
-     * if the loop body requires a large amount of stack space.
-     */
-    
-#define NUM_ARGS 9
-    Tcl_Obj *(argObjStorage[NUM_ARGS]);
-    Tcl_Obj **argObjv = argObjStorage;
-    
-#define STATIC_LIST_SIZE 4
-    int indexArray[STATIC_LIST_SIZE];
-    int varcListArray[STATIC_LIST_SIZE];
-    Tcl_Obj **varvListArray[STATIC_LIST_SIZE];
-    int argcListArray[STATIC_LIST_SIZE];
-    Tcl_Obj **argvListArray[STATIC_LIST_SIZE];
-
-    int *index = indexArray;		   /* Array of value list indices */
-    int *varcList = varcListArray;	   /* # loop variables per list */
-    Tcl_Obj ***varvList = varvListArray;   /* Array of var name lists */
-    int *argcList = argcListArray;	   /* Array of value list sizes */
-    Tcl_Obj ***argvList = argvListArray;   /* Array of value lists */
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    int *index;			/* Array of value list indices */
+    int *varcList;		/* # loop variables per list */
+    Tcl_Obj ***varvList;	/* Array of var name lists */
+    Tcl_Obj **vCopyList;	/* Copies of var name list arguments */
+    int *argcList;		/* Array of value list sizes */
+    Tcl_Obj ***argvList;	/* Array of value lists */
+    Tcl_Obj **aCopyList;	/* Copies of value list arguments */
 
     if (objc < 4 || (objc%2 != 0)) {
 	Tcl_WrongNumArgs(interp, 1, objv,
@@ -1774,65 +1730,54 @@ Tcl_ForeachObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Create the object argument array "argObjv". Make sure argObjv is
-     * large enough to hold the objc arguments.
+     * Manage numList parallel value lists.
+     * argvList[i] is a value list counted by argcList[i]l;
+     * varvList[i] is the list of variables associated with the value list;
+     * varcList[i] is the number of variables associated with the value list;
+     * index[i] is the current pointer into the value list argvList[i].
      */
 
-    if (objc > NUM_ARGS) {
-	argObjv = (Tcl_Obj **) ckalloc(objc * sizeof(Tcl_Obj *));
-    }
-    for (i = 0;  i < objc;  i++) {
-	argObjv[i] = objv[i];
-    }
+    index = (int *) TclStackAlloc(interp, 3 * numLists * sizeof(int));
+    varcList = index + numLists;
+    argcList = varcList + numLists;
+    memset(index, 0, 3 * numLists * sizeof(int));
 
-    /*
-     * Manage numList parallel value lists.
-     * argvList[i] is a value list counted by argcList[i]
-     * varvList[i] is the list of variables associated with the value list
-     * varcList[i] is the number of variables associated with the value list
-     * index[i] is the current pointer into the value list argvList[i]
-     */
+    varvList = (Tcl_Obj ***)
+	    TclStackAlloc(interp, 2 * numLists * sizeof(Tcl_Obj **));
+    argvList = varvList + numLists;
+    memset(varvList, 0, 2 * numLists * sizeof(Tcl_Obj **));
 
-    numLists = (objc-2)/2;
-    if (numLists > STATIC_LIST_SIZE) {
-	index = (int *) ckalloc(numLists * sizeof(int));
-	varcList = (int *) ckalloc(numLists * sizeof(int));
-	varvList = (Tcl_Obj ***) ckalloc(numLists * sizeof(Tcl_Obj **));
-	argcList = (int *) ckalloc(numLists * sizeof(int));
-	argvList = (Tcl_Obj ***) ckalloc(numLists * sizeof(Tcl_Obj **));
-    }
-    for (i = 0;  i < numLists;  i++) {
-	index[i] = 0;
-	varcList[i] = 0;
-	varvList[i] = (Tcl_Obj **) NULL;
-	argcList[i] = 0;
-	argvList[i] = (Tcl_Obj **) NULL;
-    }
+    vCopyList = (Tcl_Obj **)
+	    TclStackAlloc(interp, 2 * numLists * sizeof(Tcl_Obj *));
+    aCopyList = vCopyList + numLists;
+    memset(vCopyList, 0, 2 * numLists * sizeof(Tcl_Obj *));
 
     /*
-     * Break up the value lists and variable lists into elements
+     * Break up the value lists and variable lists into elements.
      */
 
     maxj = 0;
-    for (i = 0;  i < numLists;  i++) {
-	result = Tcl_ListObjGetElements(interp, argObjv[1+i*2],
-	        &varcList[i], &varvList[i]);
-	if (result != TCL_OK) {
+    for (i=0 ; i<numLists ; i++) {
+	
+	vCopyList[i] = TclListObjCopy(interp, objv[1+i*2]);
+	if (vCopyList[i] == NULL) {
+	    result = TCL_ERROR;
 	    goto done;
 	}
+	TclListObjGetElements(NULL, vCopyList[i], &varcList[i], &varvList[i]);
 	if (varcList[i] < 1) {
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	            "foreach varlist is empty", -1);
+	    Tcl_AppendResult(interp, "foreach varlist is empty", NULL);
 	    result = TCL_ERROR;
 	    goto done;
 	}
-	
-	result = Tcl_ListObjGetElements(interp, argObjv[2+i*2],
-	        &argcList[i], &argvList[i]);
-	if (result != TCL_OK) {
+
+	aCopyList[i] = TclListObjCopy(interp, objv[2+i*2]);
+	if (aCopyList[i] == NULL) {
+	    result = TCL_ERROR;
 	    goto done;
 	}
-	
+	TclListObjGetElements(NULL, aCopyList[i], &argcList[i], &argvList[i]);
+
 	j = argcList[i] / varcList[i];
 	if ((argcList[i] % varcList[i]) != 0) {
 	    j++;
@@ -1843,64 +1788,39 @@ Tcl_ForeachObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Iterate maxj times through the lists in parallel
-     * If some value lists run out of values, set loop vars to ""
+     * Iterate maxj times through the lists in parallel. If some value lists
+     * run out of values, set loop vars to ""
      */
-    
-    bodyPtr = argObjv[objc-1];
-    for (j = 0;  j < maxj;  j++) {
-	for (i = 0;  i < numLists;  i++) {
-	    /*
-	     * Refetch the list members; we assume that the sizes are
-	     * the same, but the array of elements might be different
-	     * if the internal rep of the objects has been lost and
-	     * recreated (it is too difficult to accurately tell when
-	     * this happens, which can lead to some wierd crashes,
-	     * like Bug #494348...)
-	     */
 
-	    result = Tcl_ListObjGetElements(interp, argObjv[1+i*2],
-		    &varcList[i], &varvList[i]);
-	    if (result != TCL_OK) {
-		panic("Tcl_ForeachObjCmd: could not reconvert variable list %d to a list object\n", i);
-	    }
-	    result = Tcl_ListObjGetElements(interp, argObjv[2+i*2],
-		    &argcList[i], &argvList[i]);
-	    if (result != TCL_OK) {
-		panic("Tcl_ForeachObjCmd: could not reconvert value list %d to a list object\n", i);
-	    }
-	    
-	    for (v = 0;  v < varcList[i];  v++) {
+    bodyPtr = objv[objc-1];
+    for (j=0 ; j<maxj ; j++) {
+	for (i=0 ; i<numLists ; i++) {
+	    for (v=0 ; v<varcList[i] ; v++) {
 		int k = index[i]++;
 		Tcl_Obj *valuePtr, *varValuePtr;
-		
+
 		if (k < argcList[i]) {
 		    valuePtr = argvList[i][k];
 		} else {
-		    valuePtr = Tcl_NewObj(); /* empty string */
+		    valuePtr = Tcl_NewObj(); /* Empty string */
 		}
-		Tcl_IncrRefCount(valuePtr);
-		varValuePtr = Tcl_ObjSetVar2(interp, varvList[i][v],
-			NULL, valuePtr, 0);
-		Tcl_DecrRefCount(valuePtr);
+		varValuePtr = Tcl_ObjSetVar2(interp, varvList[i][v], NULL,
+			valuePtr, TCL_LEAVE_ERR_MSG);
 		if (varValuePtr == NULL) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"couldn't set loop variable: \"",
-			Tcl_GetString(varvList[i][v]), "\"", (char *) NULL);
+		    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			    "\n    (setting foreach loop variable \"%s\")",
+			    TclGetString(varvList[i][v])));
 		    result = TCL_ERROR;
 		    goto done;
 		}
-
 	    }
 	}
 
-#ifndef TCL_TIP280
-	result = Tcl_EvalObjEx(interp, bodyPtr, 0);
-#else
-	/* TIP #280. Make invoking context available to loop body */
-	result = TclEvalObjEx(interp, bodyPtr, 0, iPtr->cmdFramePtr,objc-1);
-#endif
+	/*
+	 * TIP #280. Make invoking context available to loop body.
+	 */
+
+	result = TclEvalObjEx(interp, bodyPtr, 0, iPtr->cmdFramePtr, objc-1);
 	if (result != TCL_OK) {
 	    if (result == TCL_CONTINUE) {
 		result = TCL_OK;
@@ -1908,11 +1828,9 @@ Tcl_ForeachObjCmd(dummy, interp, objc, objv)
 		result = TCL_OK;
 		break;
 	    } else if (result == TCL_ERROR) {
-                char msg[32 + TCL_INTEGER_SPACE];
-
-		sprintf(msg, "\n    (\"foreach\" body line %d)",
-			interp->errorLine);
-		Tcl_AddObjErrorInfo(interp, msg, -1);
+		Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			"\n    (\"foreach\" body line %d)",
+			interp->errorLine));
 		break;
 	    } else {
 		break;
@@ -1923,20 +1841,19 @@ Tcl_ForeachObjCmd(dummy, interp, objc, objv)
 	Tcl_ResetResult(interp);
     }
 
-    done:
-    if (numLists > STATIC_LIST_SIZE) {
-	ckfree((char *) index);
-	ckfree((char *) varcList);
-	ckfree((char *) argcList);
-	ckfree((char *) varvList);
-	ckfree((char *) argvList);
-    }
-    if (argObjv != argObjStorage) {
-	ckfree((char *) argObjv);
+  done:
+    for (i=0 ; i<numLists ; i++) {
+	if (vCopyList[i]) {
+	    Tcl_DecrRefCount(vCopyList[i]);
+	}
+	if (aCopyList[i]) {
+	    Tcl_DecrRefCount(aCopyList[i]);
+	}
     }
+    TclStackFree(interp, vCopyList);	/* Tcl_Obj * arrays */
+    TclStackFree(interp, varvList);	/* Tcl_Obj ** arrays */
+    TclStackFree(interp, index);	/* int arrays */
     return result;
-#undef STATIC_LIST_SIZE
-#undef NUM_ARGS
 }
 
 /*
@@ -1944,8 +1861,8 @@ Tcl_ForeachObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_FormatObjCmd --
  *
- *	This procedure is invoked to process the "format" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "format" Tcl command. See
+ *	the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1958,493 +1875,25 @@ Tcl_ForeachObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_FormatObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;    	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_FormatObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    char *format;		/* Used to read characters from the format
-				 * string. */
-    int formatLen;		/* The length of the format string */
-    char *endPtr;		/* Points to the last char in format array */
-    char newFormat[43];		/* A new format specifier is generated here. */
-    int width;			/* Field width from field specifier, or 0 if
-				 * no width given. */
-    int precision;		/* Field precision from field specifier, or 0
-				 * if no precision given. */
-    int size;			/* Number of bytes needed for result of
-				 * conversion, based on type of conversion
-				 * ("e", "s", etc.), width, and precision. */
-    long intValue;		/* Used to hold value to pass to sprintf, if
-				 * it's a one-word integer or char value */
-    char *ptrValue = NULL;	/* Used to hold value to pass to sprintf, if
-				 * it's a one-word value. */
-    double doubleValue;		/* Used to hold value to pass to sprintf if
-				 * it's a double value. */
-    Tcl_WideInt wideValue;	/* Used to hold value to pass to sprintf if
-				 * it's a 'long long' value. */
-    int whichValue;		/* Indicates which of intValue, ptrValue,
-				 * or doubleValue has the value to pass to
-				 * sprintf, according to the following
-				 * definitions: */
-#   define INT_VALUE 0
-#   define CHAR_VALUE 1
-#   define PTR_VALUE 2
-#   define DOUBLE_VALUE 3
-#   define STRING_VALUE 4
-#   define WIDE_VALUE 5
-#   define MAX_FLOAT_SIZE 320
-
-    Tcl_Obj *resultPtr;  	/* Where result is stored finally. */
-    char staticBuf[MAX_FLOAT_SIZE + 1];
-				/* A static buffer to copy the format results 
-				 * into */
-    char *dst = staticBuf;      /* The buffer that sprintf writes into each
-				 * time the format processes a specifier */
-    int dstSize = MAX_FLOAT_SIZE;
-				/* The size of the dst buffer */
-    int noPercent;		/* Special case for speed:  indicates there's
-				 * no field specifier, just a string to copy.*/
-    int objIndex;		/* Index of argument to substitute next. */
-    int gotXpg = 0;		/* Non-zero means that an XPG3 %n$-style
-				 * specifier has been seen. */
-    int gotSequential = 0;	/* Non-zero means that a regular sequential
-				 * (non-XPG3) conversion specifier has been
-				 * seen. */
-    int useShort;		/* Value to be printed is short (half word). */
-    char *end;			/* Used to locate end of numerical fields. */
-    int stringLen = 0;		/* Length of string in characters rather
-				 * than bytes.  Used for %s substitution. */
-    int gotMinus;		/* Non-zero indicates that a minus flag has
-				 * been seen in the current field. */
-    int gotPrecision;		/* Non-zero indicates that a precision has
-				 * been set for the current field. */
-    int gotZero;		/* Non-zero indicates that a zero flag has
-				 * been seen in the current field. */
-    int useWide;		/* Value to be printed is Tcl_WideInt. */
-
-    /*
-     * This procedure is a bit nasty.  The goal is to use sprintf to
-     * do most of the dirty work.  There are several problems:
-     * 1. this procedure can't trust its arguments.
-     * 2. we must be able to provide a large enough result area to hold
-     *    whatever's generated.  This is hard to estimate.
-     * 3. there's no way to move the arguments from objv to the call
-     *    to sprintf in a reasonable way.  This is particularly nasty
-     *    because some of the arguments may be two-word values (doubles
-     *    and wide-ints).
-     * So, what happens here is to scan the format string one % group
-     * at a time, making many individual calls to sprintf.
-     */
+    Tcl_Obj *resultPtr;		/* Where result is stored finally. */
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "formatString ?arg arg ...?");
 	return TCL_ERROR;
     }
 
-    format = Tcl_GetStringFromObj(objv[1], &formatLen);
-    endPtr = format + formatLen;
-    resultPtr = Tcl_NewObj();
-    objIndex = 2;
-
-    while (format < endPtr) {
-	register char *newPtr = newFormat;
-
-	width = precision = noPercent = useShort = 0;
-	gotZero = gotMinus = gotPrecision = 0;
-	useWide = 0;
-	whichValue = PTR_VALUE;
-
-	/*
-	 * Get rid of any characters before the next field specifier.
-	 */
-	if (*format != '%') {
-	    ptrValue = format;
-	    while ((*format != '%') && (format < endPtr)) {
-		format++;
-	    }
-	    size = format - ptrValue;
-	    noPercent = 1;
-	    goto doField;
-	}
-
-	if (format[1] == '%') {
-	    ptrValue = format;
-	    size = 1;
-	    noPercent = 1;
-	    format += 2;
-	    goto doField;
-	}
-
-	/*
-	 * Parse off a field specifier, compute how many characters
-	 * will be needed to store the result, and substitute for
-	 * "*" size specifiers.
-	 */
-	*newPtr = '%';
-	newPtr++;
-	format++;
-	if (isdigit(UCHAR(*format))) { /* INTL: Tcl source. */
-	    int tmp;
-
-	    /*
-	     * Check for an XPG3-style %n$ specification.  Note: there
-	     * must not be a mixture of XPG3 specs and non-XPG3 specs
-	     * in the same format string.
-	     */
-
-	    tmp = strtoul(format, &end, 10);	/* INTL: "C" locale. */
-	    if (*end != '$') {
-		goto notXpg;
-	    }
-	    format = end+1;
-	    gotXpg = 1;
-	    if (gotSequential) {
-		goto mixedXPG;
-	    }
-	    objIndex = tmp+1;
-	    if ((objIndex < 2) || (objIndex >= objc)) {
-		goto badIndex;
-	    }
-	    goto xpgCheckDone;
-	}
-
-	notXpg:
-	gotSequential = 1;
-	if (gotXpg) {
-	    goto mixedXPG;
-	}
-
-	xpgCheckDone:
-	while ((*format == '-') || (*format == '#') || (*format == '0')
-		|| (*format == ' ') || (*format == '+')) {
-	    if (*format == '-') {
-		gotMinus = 1;
-	    }
-	    if (*format == '0') {
-		/*
-		 * This will be handled by sprintf for numbers, but we
-		 * need to do the char/string ones ourselves
-		 */
-		gotZero = 1;
-	    }
-	    *newPtr = *format;
-	    newPtr++;
-	    format++;
-	}
-	if (isdigit(UCHAR(*format))) {		/* INTL: Tcl source. */
-	    width = strtoul(format, &end, 10);	/* INTL: Tcl source. */
-	    format = end;
-	} else if (*format == '*') {
-	    if (objIndex >= objc) {
-		goto badIndex;
-	    }
-	    if (Tcl_GetIntFromObj(interp,	/* INTL: Tcl source. */
-		    objv[objIndex], &width) != TCL_OK) {
-		goto fmtError;
-	    }
-	    if (width < 0) {
-		width = -width;
-		*newPtr = '-';
-		gotMinus = 1;
-		newPtr++;
-	    }
-	    objIndex++;
-	    format++;
-	}
-	if (width > 100000) {
-	    /*
-	     * Don't allow arbitrarily large widths:  could cause core
-	     * dump when we try to allocate a zillion bytes of memory
-	     * below.
-	     */
-
-	    width = 100000;
-	} else if (width < 0) {
-	    width = 0;
-	}
-	if (width != 0) {
-	    TclFormatInt(newPtr, width);	/* INTL: printf format. */
-	    while (*newPtr != 0) {
-		newPtr++;
-	    }
-	}
-	if (*format == '.') {
-	    *newPtr = '.';
-	    newPtr++;
-	    format++;
-	    gotPrecision = 1;
-	}
-	if (isdigit(UCHAR(*format))) {		/* INTL: Tcl source. */
-	    precision = strtoul(format, &end, 10);  /* INTL: "C" locale. */
-	    format = end;
-	} else if (*format == '*') {
-	    if (objIndex >= objc) {
-		goto badIndex;
-	    }
-	    if (Tcl_GetIntFromObj(interp,	/* INTL: Tcl source. */
-		    objv[objIndex], &precision) != TCL_OK) {
-		goto fmtError;
-	    }
-	    objIndex++;
-	    format++;
-	}
-	if (gotPrecision) {
-	    TclFormatInt(newPtr, precision);	/* INTL: printf format. */
-	    while (*newPtr != 0) {
-		newPtr++;
-	    }
-	}
-	if (*format == 'l') {
-	    useWide = 1;
-	    /*
-	     * Only add a 'll' modifier for integer values as it makes
-	     * some libc's go into spasm otherwise.  [Bug #702622]
-	     */
-	    switch (format[1]) {
-	    case 'i':
-	    case 'd':
-	    case 'o':
-	    case 'u':
-	    case 'x':
-	    case 'X':
-		strcpy(newPtr, TCL_LL_MODIFIER);
-		newPtr += TCL_LL_MODIFIER_SIZE;
-	    }
-	    format++;
-	} else if (*format == 'h') {
-	    useShort = 1;
-	    *newPtr = 'h';
-	    newPtr++;
-	    format++;
-	}
-	*newPtr = *format;
-	newPtr++;
-	*newPtr = 0;
-	if (objIndex >= objc) {
-	    goto badIndex;
-	}
-	switch (*format) {
-	case 'i':
-	    newPtr[-1] = 'd';
-	case 'd':
-	case 'o':
-	case 'u':
-	case 'x':
-	case 'X':
-	    if (useWide) {
-		if (Tcl_GetWideIntFromObj(interp,	/* INTL: Tcl source. */
-			objv[objIndex], &wideValue) != TCL_OK) {
-		    goto fmtError;
-		}
-		whichValue = WIDE_VALUE;
-		size = 40 + precision;
-		break;
-	    }
-	    if (Tcl_GetLongFromObj(interp,		/* INTL: Tcl source. */
-		    objv[objIndex], &intValue) != TCL_OK) {
-		if (Tcl_GetWideIntFromObj(interp,	/* INTL: Tcl source. */
-			objv[objIndex], &wideValue) != TCL_OK) {
-		    goto fmtError;
-		}
-		intValue = Tcl_WideAsLong(wideValue);
-	    }
-
-#if (LONG_MAX > INT_MAX)
-	    if (!useShort) {
-		/*
-		 * Add the 'l' for long format type because we are on an
-		 * LP64 archtecture and we are really going to pass a long
-		 * argument to sprintf.
-		 *
-		 * Do not add this if we're going to pass in a short (i.e.
-		 * if we've got an 'h' modifier already in the string); some
-		 * libc implementations of sprintf() do not like it at all.
-		 * [Bug 1154163]
-		 */
-		newPtr++;
-		*newPtr = 0;
-		newPtr[-1] = newPtr[-2];
-		newPtr[-2] = 'l';
-	    }
-#endif /* LONG_MAX > INT_MAX */
-	    whichValue = INT_VALUE;
-	    size = 40 + precision;
-	    break;
-	case 's':
-	    /*
-	     * Compute the length of the string in characters and add
-	     * any additional space required by the field width.  All
-	     * of the extra characters will be spaces, so one byte per
-	     * character is adequate.
-	     */
-
-	    whichValue = STRING_VALUE;
-	    ptrValue = Tcl_GetStringFromObj(objv[objIndex], &size);
-	    stringLen = Tcl_NumUtfChars(ptrValue, size);
-	    if (gotPrecision && (precision < stringLen)) {
-		stringLen = precision;
-	    }
-	    size = Tcl_UtfAtIndex(ptrValue, stringLen) - ptrValue;
-	    if (width > stringLen) {
-		size += (width - stringLen);
-	    }
-	    break;
-	case 'c':
-	    if (Tcl_GetLongFromObj(interp,	/* INTL: Tcl source. */
-		    objv[objIndex], &intValue) != TCL_OK) {
-		goto fmtError;
-	    }
-	    whichValue = CHAR_VALUE;
-	    size = width + TCL_UTF_MAX;
-	    break;
-	case 'e':
-	case 'E':
-	case 'f':
-	case 'g':
-	case 'G':
-	    if (Tcl_GetDoubleFromObj(interp, /* INTL: Tcl source. */
-		    objv[objIndex], &doubleValue) != TCL_OK) {
-		goto fmtError;
-	    }
-	    whichValue = DOUBLE_VALUE;
-	    size = MAX_FLOAT_SIZE;
-	    if (precision > 10) {
-		size += precision;
-	    }
-	    break;
-	case 0:
-	    Tcl_SetResult(interp,
-		    "format string ended in middle of field specifier",
-		    TCL_STATIC);
-	    goto fmtError;
-	default:
-	{
-	    char buf[40];
-
-	    sprintf(buf, "bad field specifier \"%c\"", *format);
-	    Tcl_SetResult(interp, buf, TCL_VOLATILE);
-	    goto fmtError;
-	}
-	}
-	objIndex++;
-	format++;
-
-	/*
-	 * Make sure that there's enough space to hold the formatted
-	 * result, then format it.
-	 */
-
-	doField:
-	if (width > size) {
-	    size = width;
-	}
-	if (noPercent) {
-	    Tcl_AppendToObj(resultPtr, ptrValue, size);
-	} else {
-	    if (size > dstSize) {
-	        if (dst != staticBuf) {
-		    ckfree(dst);
-		}
-		dst = (char *) ckalloc((unsigned) (size + 1));
-		dstSize = size;
-	    }
-	    switch (whichValue) {
-	    case DOUBLE_VALUE:
-		sprintf(dst, newFormat, doubleValue); /* INTL: user locale. */
-		break;
-	    case WIDE_VALUE:
-		sprintf(dst, newFormat, wideValue);
-		break;
-	    case INT_VALUE:
-		if (useShort) {
-		    sprintf(dst, newFormat, (short) intValue);
-		} else {
-		    sprintf(dst, newFormat, intValue);
-		}
-		break;
-	    case CHAR_VALUE: {
-		char *ptr;
-		char padChar = (gotZero ? '0' : ' ');
-		ptr = dst;
-		if (!gotMinus) {
-		    for ( ; --width > 0; ptr++) {
-			*ptr = padChar;
-		    }
-		}
-		ptr += Tcl_UniCharToUtf(intValue, ptr);
-		for ( ; --width > 0; ptr++) {
-		    *ptr = padChar;
-		}
-		*ptr = '\0';
-		break;
-	    }
-	    case STRING_VALUE: {
-		char *ptr;
-		char padChar = (gotZero ? '0' : ' ');
-		int pad;
-
-		ptr = dst;
-		if (width > stringLen) {
-		    pad = width - stringLen;
-		} else {
-		    pad = 0;
-		}
-
-		if (!gotMinus) {
-		    while (pad > 0) {
-			*ptr++ = padChar;
-			pad--;
-		    }
-		}
-
-		size = Tcl_UtfAtIndex(ptrValue, stringLen) - ptrValue; 
-		if (size) {
-		    memcpy(ptr, ptrValue, (size_t) size);
-		    ptr += size;
-		}
-		while (pad > 0) {
-		    *ptr++ = padChar;
-		    pad--;
-		}
-		*ptr = '\0';
-		break;
-	    }
-	    default:
-		sprintf(dst, newFormat, ptrValue);
-		break;
-	    }
-	    Tcl_AppendToObj(resultPtr, dst, -1);
-	}
+    resultPtr = Tcl_Format(interp, TclGetString(objv[1]), objc-2, objv+2);
+    if (resultPtr == NULL) {
+	return TCL_ERROR;
     }
-
     Tcl_SetObjResult(interp, resultPtr);
-    if (dst != staticBuf) {
-	ckfree(dst);
-    }
     return TCL_OK;
-
-    mixedXPG:
-    Tcl_SetResult(interp, 
-	    "cannot mix \"%\" and \"%n$\" conversion specifiers", TCL_STATIC);
-    goto fmtError;
-
-    badIndex:
-    if (gotXpg) {
-	Tcl_SetResult(interp, 
-		"\"%n$\" argument index out of range", TCL_STATIC);
-    } else {
-	Tcl_SetResult(interp, 
-		"not enough arguments for all format specifiers", TCL_STATIC);
-    }
-
-    fmtError:
-    if (dst != staticBuf) {
-	ckfree(dst);
-    }
-    Tcl_DecrRefCount(resultPtr);
-    return TCL_ERROR;
 }
 
 /*
@@ -2454,4 +1903,3 @@ Tcl_FormatObjCmd(dummy, interp, objc, objv)
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclCmdIL.c b/generic/tclCmdIL.c
index 21dbdc8..152e61d 100644
--- a/generic/tclCmdIL.c
+++ b/generic/tclCmdIL.c
@@ -1,62 +1,80 @@
-/* 
+/*
  * tclCmdIL.c --
  *
- *	This file contains the top-level command routines for most of
- *	the Tcl built-in commands whose names begin with the letters
- *	I through L.  It contains only commands in the generic core
- *	(i.e. those that don't depend much upon UNIX facilities).
+ *	This file contains the top-level command routines for most of the Tcl
+ *	built-in commands whose names begin with the letters I through L. It
+ *	contains only commands in the generic core (i.e. those that don't
+ *	depend much upon UNIX facilities).
  *
  * Copyright (c) 1987-1993 The Regents of the University of California.
  * Copyright (c) 1993-1997 Lucent Technologies.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
- * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+ * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
+ * Copyright (c) 2005 Donal K. Fellows.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 #include "tclRegexp.h"
 
 /*
- * During execution of the "lsort" command, structures of the following
- * type are used to arrange the objects being sorted into a collection
- * of linked lists.
+ * During execution of the "lsort" command, structures of the following type
+ * are used to arrange the objects being sorted into a collection of linked
+ * lists.
  */
 
 typedef struct SortElement {
-    Tcl_Obj *objPtr;			/* Object being sorted. */
-    int count;				/* number of same elements in list */
-    struct SortElement *nextPtr;        /* Next element in the list, or
-					 * NULL for end of list. */
+    union {
+	char *strValuePtr;
+	long   intValue;
+	double doubleValue;
+	Tcl_Obj *objValuePtr;
+    } index;
+    Tcl_Obj *objPtr;	        /* Object being sorted, or its index. */
+    struct SortElement *nextPtr;/* Next element in the list, or NULL for end
+				 * of list. */
 } SortElement;
 
 /*
- * The "lsort" command needs to pass certain information down to the
- * function that compares two list elements, and the comparison function
- * needs to pass success or failure information back up to the top-level
- * "lsort" command.  The following structure is used to pass this
- * information.
+ * These function pointer types are used with the "lsearch" and "lsort"
+ * commands to facilitate the "-nocase" option.
+ */
+
+typedef int (*SortStrCmpFn_t) (const char *, const char *);
+typedef int (*SortMemCmpFn_t) (const void *, const void *, size_t);
+
+/*
+ * The "lsort" command needs to pass certain information down to the function
+ * that compares two list elements, and the comparison function needs to pass
+ * success or failure information back up to the top-level "lsort" command.
+ * The following structure is used to pass this information.
  */
 
 typedef struct SortInfo {
     int isIncreasing;		/* Nonzero means sort in increasing order. */
-    int sortMode;		/* The sort mode.  One of SORTMODE_*
-				 * values defined below */
-    Tcl_Obj *compareCmdPtr;     /* The Tcl comparison command when sortMode
-				 * is SORTMODE_COMMAND.  Pre-initialized to
-				 * hold base of command.*/
-    int index;			/* If the -index option was specified, this
-				 * holds the index of the list element
-				 * to extract for comparison.  If -index
-				 * wasn't specified, this is -1. */
-    Tcl_Interp *interp;		/* The interpreter in which the sortis
-				 * being done. */
-    int resultCode;		/* Completion code for the lsort command.
-				 * If an error occurs during the sort this
-				 * is changed from TCL_OK to  TCL_ERROR. */
+    int sortMode;		/* The sort mode. One of SORTMODE_* values
+				 * defined below. */
+    Tcl_Obj *compareCmdPtr;	/* The Tcl comparison command when sortMode is
+				 * SORTMODE_COMMAND. Pre-initialized to hold
+				 * base of command. */
+    int *indexv;		/* If the -index option was specified, this
+				 * holds the indexes contained in the list
+				 * supplied as an argument to that option.
+				 * NULL if no indexes supplied, and points to
+				 * singleIndex field when only one
+				 * supplied. */
+    int indexc;			/* Number of indexes in indexv array. */
+    int singleIndex;		/* Static space for common index case. */
+    int unique;
+    int numElements;
+    Tcl_Interp *interp;		/* The interpreter in which the sort is being
+				 * done. */
+    int resultCode;		/* Completion code for the lsort command. If
+				 * an error occurs during the sort this is
+				 * changed from TCL_OK to TCL_ERROR. */
 } SortInfo;
 
 /*
@@ -64,115 +82,113 @@ typedef struct SortInfo {
  * following values.
  */
 
-#define SORTMODE_ASCII      0
-#define SORTMODE_INTEGER    1
-#define SORTMODE_REAL       2
-#define SORTMODE_COMMAND    3
-#define SORTMODE_DICTIONARY 4
+#define SORTMODE_ASCII		0
+#define SORTMODE_INTEGER	1
+#define SORTMODE_REAL		2
+#define SORTMODE_COMMAND	3
+#define SORTMODE_DICTIONARY	4
+#define SORTMODE_ASCII_NC	8
 
 /*
- * Magic values for the index field of the SortInfo structure.
- * Note that the index "end-1" will be translated to SORTIDX_END-1, etc.
+ * Magic values for the index field of the SortInfo structure. Note that the
+ * index "end-1" will be translated to SORTIDX_END-1, etc.
  */
-#define SORTIDX_NONE	-1		/* Not indexed; use whole value. */
-#define SORTIDX_END	-2		/* Indexed from end. */
+
+#define SORTIDX_NONE	-1	/* Not indexed; use whole value. */
+#define SORTIDX_END	-2	/* Indexed from end. */
 
 /*
  * Forward declarations for procedures defined in this file:
  */
 
-static void		AppendLocals _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *listPtr, CONST char *pattern,
-			    int includeLinks));
-static int		DictionaryCompare _ANSI_ARGS_((char *left,
-			    char *right));
-static int		InfoArgsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoBodyCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoCmdCountCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoCommandsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoCompleteCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoDefaultCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoExistsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-#ifdef TCL_TIP280
+static int		DictionaryCompare(char *left, char *right);
+static int		InfoArgsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoBodyCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoCmdCountCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoCommandsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoCompleteCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoDefaultCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
 /* TIP #280 - New 'info' subcommand 'frame' */
-static int		InfoFrameCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-#endif
-static int		InfoFunctionsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoGlobalsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoHostnameCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoLevelCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoLibraryCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoLoadedCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoLocalsCmd _ANSI_ARGS_((ClientData dummy,
+static int		InfoFrameCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoFunctionsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoHostnameCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoLevelCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoLibraryCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoLoadedCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoNameOfExecutableCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoNameOfExecutableCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoPatchLevelCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoProcsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoScriptCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoSharedlibCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoTclVersionCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		InfoVarsCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static SortElement *    MergeSort _ANSI_ARGS_((SortElement *headPt,
-			    SortInfo *infoPtr));
-static SortElement *    MergeLists _ANSI_ARGS_((SortElement *leftPtr,
-			    SortElement *rightPtr, SortInfo *infoPtr));
-static int		SortCompare _ANSI_ARGS_((Tcl_Obj *firstPtr,
-			    Tcl_Obj *second, SortInfo *infoPtr));
+			    Tcl_Obj *const objv[]);
+static int		InfoPatchLevelCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoProcsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoScriptCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoSharedlibCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		InfoTclVersionCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static SortElement *    MergeLists(SortElement *leftPtr, SortElement *rightPtr,
+			    SortInfo *infoPtr);
+static int		SortCompare(SortElement *firstPtr, SortElement *second,
+			    SortInfo *infoPtr);
+static Tcl_Obj *	SelectObjFromSublist(Tcl_Obj *firstPtr,
+			    SortInfo *infoPtr);
+
+/*
+ * Array of values describing how to implement each standard subcommand of the
+ * "info" command.
+ */
+
+static const EnsembleImplMap defaultInfoMap[] = {
+    {"args",		   InfoArgsCmd,		    NULL},
+    {"body",		   InfoBodyCmd,		    NULL},
+    {"cmdcount",	   InfoCmdCountCmd,	    NULL},
+    {"commands",	   InfoCommandsCmd,	    NULL},
+    {"complete",	   InfoCompleteCmd,	    NULL},
+    {"default",		   InfoDefaultCmd,	    NULL},
+    {"exists",		   TclInfoExistsCmd,	    TclCompileInfoExistsCmd},
+    {"frame",		   InfoFrameCmd,	    NULL},
+    {"functions",	   InfoFunctionsCmd,	    NULL},
+    {"globals",		   TclInfoGlobalsCmd,	    NULL},
+    {"hostname",	   InfoHostnameCmd,	    NULL},
+    {"level",		   InfoLevelCmd,	    NULL},
+    {"library",		   InfoLibraryCmd,	    NULL},
+    {"loaded",		   InfoLoadedCmd,	    NULL},
+    {"locals",		   TclInfoLocalsCmd,	    NULL},
+    {"nameofexecutable",   InfoNameOfExecutableCmd, NULL},
+    {"patchlevel",	   InfoPatchLevelCmd,	    NULL},
+    {"procs",		   InfoProcsCmd,	    NULL},
+    {"script",		   InfoScriptCmd,	    NULL},
+    {"sharedlibextension", InfoSharedlibCmd,	    NULL},
+    {"tclversion",	   InfoTclVersionCmd,	    NULL},
+    {"vars",		   TclInfoVarsCmd,	    NULL},
+    {NULL, NULL, NULL}
+};
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_IfObjCmd --
  *
- *	This procedure is invoked to process the "if" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "if" Tcl command. See the
+ *	user documentation for details on what it does.
  *
- *	With the bytecode compiler, this procedure is only called when
- *	a command name is computed at runtime, and is "if" or the name
- *	to which "if" was renamed: e.g., "set z if; $z 1 {puts foo}"
+ *	With the bytecode compiler, this procedure is only called when a
+ *	command name is computed at runtime, and is "if" or the name to which
+ *	"if" was renamed: e.g., "set z if; $z 1 {puts foo}"
  *
  * Results:
  *	A standard Tcl result.
@@ -183,34 +199,32 @@ static int		SortCompare _ANSI_ARGS_((Tcl_Obj *firstPtr,
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_IfObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_IfObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int thenScriptIndex = 0;	/* then script to be evaled after syntax check */
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    int thenScriptIndex = 0;	/* "then" script to be evaled after syntax
+				 * check. */
+    Interp *iPtr = (Interp *) interp;
     int i, result, value;
     char *clause;
+
     i = 1;
     while (1) {
 	/*
-	 * At this point in the loop, objv and objc refer to an expression
-	 * to test, either for the main expression or an expression
-	 * following an "elseif".  The arguments after the expression must
-	 * be "then" (optional) and a script to execute if the expression is
-	 * true.
+	 * At this point in the loop, objv and objc refer to an expression to
+	 * test, either for the main expression or an expression following an
+	 * "elseif". The arguments after the expression must be "then"
+	 * (optional) and a script to execute if the expression is true.
 	 */
 
 	if (i >= objc) {
-	    clause = Tcl_GetString(objv[i-1]);
-	    Tcl_AppendResult(interp, "wrong # args: no expression after \"",
-		    clause, "\" argument", (char *) NULL);
+	    clause = TclGetString(objv[i-1]);
+	    Tcl_AppendResult(interp, "wrong # args: ",
+		    "no expression after \"", clause, "\" argument", NULL);
 	    return TCL_ERROR;
 	}
 	if (!thenScriptIndex) {
@@ -221,13 +235,13 @@ Tcl_IfObjCmd(dummy, interp, objc, objv)
 	}
 	i++;
 	if (i >= objc) {
-	    missingScript:
-	    clause = Tcl_GetString(objv[i-1]);
-	    Tcl_AppendResult(interp, "wrong # args: no script following \"",
-		    clause, "\" argument", (char *) NULL);
+	missingScript:
+	    clause = TclGetString(objv[i-1]);
+	    Tcl_AppendResult(interp, "wrong # args: ",
+		    "no script following \"", clause, "\" argument", NULL);
 	    return TCL_ERROR;
 	}
-	clause = Tcl_GetString(objv[i]);
+	clause = TclGetString(objv[i]);
 	if ((i < objc) && (strcmp(clause, "then") == 0)) {
 	    i++;
 	}
@@ -238,26 +252,25 @@ Tcl_IfObjCmd(dummy, interp, objc, objv)
 	    thenScriptIndex = i;
 	    value = 0;
 	}
-	
+
 	/*
-	 * The expression evaluated to false.  Skip the command, then
-	 * see if there is an "else" or "elseif" clause.
+	 * The expression evaluated to false. Skip the command, then see if
+	 * there is an "else" or "elseif" clause.
 	 */
 
 	i++;
 	if (i >= objc) {
 	    if (thenScriptIndex) {
-#ifndef TCL_TIP280
-		return Tcl_EvalObjEx(interp, objv[thenScriptIndex], 0);
-#else
-		/* TIP #280. Make invoking context available to branch */
+		/*
+		 * TIP #280. Make invoking context available to branch.
+		 */
+
 		return TclEvalObjEx(interp, objv[thenScriptIndex], 0,
-				    iPtr->cmdFramePtr,thenScriptIndex);
-#endif
+			iPtr->cmdFramePtr, thenScriptIndex);
 	    }
 	    return TCL_OK;
 	}
-	clause = Tcl_GetString(objv[i]);
+	clause = TclGetString(objv[i]);
 	if ((clause[0] == 'e') && (strcmp(clause, "elseif") == 0)) {
 	    i++;
 	    continue;
@@ -266,40 +279,33 @@ Tcl_IfObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Couldn't find a "then" or "elseif" clause to execute.  Check now
-     * for an "else" clause.  We know that there's at least one more
-     * argument when we get here.
+     * Couldn't find a "then" or "elseif" clause to execute. Check now for an
+     * "else" clause. We know that there's at least one more argument when we
+     * get here.
      */
 
     if (strcmp(clause, "else") == 0) {
 	i++;
 	if (i >= objc) {
-	    Tcl_AppendResult(interp,
-		    "wrong # args: no script following \"else\" argument",
-		    (char *) NULL);
+	    Tcl_AppendResult(interp, "wrong # args: ",
+		    "no script following \"else\" argument", NULL);
 	    return TCL_ERROR;
 	}
     }
     if (i < objc - 1) {
-	Tcl_AppendResult(interp,
-		"wrong # args: extra words after \"else\" clause in \"if\" command",
-		(char *) NULL);
+	Tcl_AppendResult(interp, "wrong # args: ",
+		"extra words after \"else\" clause in \"if\" command", NULL);
 	return TCL_ERROR;
     }
     if (thenScriptIndex) {
-#ifndef TCL_TIP280
-	return Tcl_EvalObjEx(interp, objv[thenScriptIndex], 0);
-#else
-	/* TIP #280. Make invoking context available to branch/else */
+	/*
+	 * TIP #280. Make invoking context available to branch/else.
+	 */
+
 	return TclEvalObjEx(interp, objv[thenScriptIndex], 0,
-			    iPtr->cmdFramePtr,thenScriptIndex);
-#endif
+		iPtr->cmdFramePtr, thenScriptIndex);
     }
-#ifndef TCL_TIP280
-    return Tcl_EvalObjEx(interp, objv[i], 0);
-#else
-    return TclEvalObjEx(interp, objv[i], 0, iPtr->cmdFramePtr,i);
-#endif
+    return TclEvalObjEx(interp, objv[i], 0, iPtr->cmdFramePtr, i);
 }
 
 /*
@@ -307,12 +313,12 @@ Tcl_IfObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_IncrObjCmd --
  *
- *	This procedure is invoked to process the "incr" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "incr" Tcl command. See the
+ *	user documentation for details on what it does.
  *
- *	With the bytecode compiler, this procedure is only called when
- *	a command name is computed at runtime, and is "incr" or the name
- *	to which "incr" was renamed: e.g., "set z incr; $z i -1"
+ *	With the bytecode compiler, this procedure is only called when a
+ *	command name is computed at runtime, and is "incr" or the name to
+ *	which "incr" was renamed: e.g., "set z incr; $z i -1"
  *
  * Results:
  *	A standard Tcl result.
@@ -323,64 +329,30 @@ Tcl_IfObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-    /* ARGSUSED */
 int
-Tcl_IncrObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_IncrObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    long incrAmount;
-    Tcl_Obj *newValuePtr;
-    
+    Tcl_Obj *newValuePtr, *incrPtr;
+
     if ((objc != 2) && (objc != 3)) {
-        Tcl_WrongNumArgs(interp, 1, objv, "varName ?increment?");
+	Tcl_WrongNumArgs(interp, 1, objv, "varName ?increment?");
 	return TCL_ERROR;
     }
 
-    /*
-     * Calculate the amount to increment by.
-     */
-    
-    if (objc == 2) {
-	incrAmount = 1;
+    if (objc == 3) {
+	incrPtr = objv[2];
     } else {
-	if (Tcl_GetLongFromObj(interp, objv[2], &incrAmount) != TCL_OK) {
-	    Tcl_AddErrorInfo(interp, "\n    (reading increment)");
-	    return TCL_ERROR;
-	}
-	/*
-	 * Need to be a bit cautious to ensure that [expr]-like rules
-	 * are enforced for interpretation of wide integers, despite
-	 * the fact that the underlying API itself is a 'long' only one.
-	 */
-	if (objv[2]->typePtr == &tclIntType) {
-	    incrAmount = objv[2]->internalRep.longValue;
-	} else if (objv[2]->typePtr == &tclWideIntType) {
-	    TclGetLongFromWide(incrAmount,objv[2]);
-	} else {
-	    Tcl_WideInt wide;
-
-	    if (Tcl_GetWideIntFromObj(interp, objv[2], &wide) != TCL_OK) {
-		Tcl_AddErrorInfo(interp, "\n    (reading increment)");
-		return TCL_ERROR;
-	    }
-	    incrAmount = Tcl_WideAsLong(wide);
-	    if ((wide <= Tcl_LongAsWide(LONG_MAX))
-		    && (wide >= Tcl_LongAsWide(LONG_MIN))) {
-		objv[2]->typePtr = &tclIntType;
-		objv[2]->internalRep.longValue = incrAmount;
-	    }
-	}
+	incrPtr = Tcl_NewIntObj(1);
     }
-    
-    /*
-     * Increment the variable's value.
-     */
+    Tcl_IncrRefCount(incrPtr);
+    newValuePtr = TclIncrObjVar2(interp, objv[1], NULL,
+	    incrPtr, TCL_LEAVE_ERR_MSG);
+    Tcl_DecrRefCount(incrPtr);
 
-    newValuePtr = TclIncrVar2(interp, objv[1], (Tcl_Obj *) NULL, incrAmount,
-	    TCL_LEAVE_ERR_MSG);
     if (newValuePtr == NULL) {
 	return TCL_ERROR;
     }
@@ -391,141 +363,31 @@ Tcl_IncrObjCmd(dummy, interp, objc, objv)
      */
 
     Tcl_SetObjResult(interp, newValuePtr);
-    return TCL_OK; 
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_InfoObjCmd --
+ * TclInitInfoCmd --
  *
- *	This procedure is invoked to process the "info" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is called to create the "info" Tcl command. See the user
+ *	documentation for details on what it does.
  *
  * Results:
- *	A standard Tcl result.
+ *	FIXME
  *
  * Side effects:
- *	See the user documentation.
+ *	none
  *
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-int
-Tcl_InfoObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Arbitrary value passed to the command. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_Command
+TclInitInfoCmd(
+    Tcl_Interp *interp)		/* Current interpreter. */
 {
-    static CONST char *subCmds[] = {
-	     "args", "body", "cmdcount", "commands",
-	     "complete", "default", "exists",
-#ifdef TCL_TIP280
-	     "frame",
-#endif
-	     "functions",
-	     "globals", "hostname", "level", "library", "loaded",
-	     "locals", "nameofexecutable", "patchlevel", "procs",
-	     "script", "sharedlibextension", "tclversion", "vars",
-	     (char *) NULL};
-    enum ISubCmdIdx {
-	    IArgsIdx, IBodyIdx, ICmdCountIdx, ICommandsIdx,
-	    ICompleteIdx, IDefaultIdx, IExistsIdx,
-#ifdef TCL_TIP280
-	    IFrameIdx,
-#endif
-	    IFunctionsIdx,
-	    IGlobalsIdx, IHostnameIdx, ILevelIdx, ILibraryIdx, ILoadedIdx,
-	    ILocalsIdx, INameOfExecutableIdx, IPatchLevelIdx, IProcsIdx,
-	    IScriptIdx, ISharedLibExtensionIdx, ITclVersionIdx, IVarsIdx
-    };
-    int index, result;
-
-    if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
-        return TCL_ERROR;
-    }
-    
-    result = Tcl_GetIndexFromObj(interp, objv[1], subCmds, "option", 0,
-	    (int *) &index);
-    if (result != TCL_OK) {
-	return result;
-    }
-
-    switch (index) {
-        case IArgsIdx:
-	    result = InfoArgsCmd(clientData, interp, objc, objv);
-            break;
-	case IBodyIdx:
-	    result = InfoBodyCmd(clientData, interp, objc, objv);
-	    break;
-	case ICmdCountIdx:
-	    result = InfoCmdCountCmd(clientData, interp, objc, objv);
-	    break;
-        case ICommandsIdx:
-	    result = InfoCommandsCmd(clientData, interp, objc, objv);
-	    break;
-        case ICompleteIdx:
-	    result = InfoCompleteCmd(clientData, interp, objc, objv);
-	    break;
-	case IDefaultIdx:
-	    result = InfoDefaultCmd(clientData, interp, objc, objv);
-	    break;
-	case IExistsIdx:
-	    result = InfoExistsCmd(clientData, interp, objc, objv);
-	    break;
-#ifdef TCL_TIP280
-	case IFrameIdx:
-	    /* TIP #280 - New method 'frame' */
-	    result = InfoFrameCmd(clientData, interp, objc, objv);
-	    break;
-#endif
-	case IFunctionsIdx:
-	    result = InfoFunctionsCmd(clientData, interp, objc, objv);
-	    break;
-        case IGlobalsIdx:
-	    result = InfoGlobalsCmd(clientData, interp, objc, objv);
-	    break;
-        case IHostnameIdx:
-	    result = InfoHostnameCmd(clientData, interp, objc, objv);
-	    break;
-	case ILevelIdx:
-	    result = InfoLevelCmd(clientData, interp, objc, objv);
-	    break;
-	case ILibraryIdx:
-	    result = InfoLibraryCmd(clientData, interp, objc, objv);
-	    break;
-        case ILoadedIdx:
-	    result = InfoLoadedCmd(clientData, interp, objc, objv);
-	    break;
-        case ILocalsIdx:
-	    result = InfoLocalsCmd(clientData, interp, objc, objv);
-	    break;
-	case INameOfExecutableIdx:
-	    result = InfoNameOfExecutableCmd(clientData, interp, objc, objv);
-	    break;
-	case IPatchLevelIdx:
-	    result = InfoPatchLevelCmd(clientData, interp, objc, objv);
-	    break;
-        case IProcsIdx:
-	    result = InfoProcsCmd(clientData, interp, objc, objv);
-	    break;
-        case IScriptIdx:
-	    result = InfoScriptCmd(clientData, interp, objc, objv);
-	    break;
-	case ISharedLibExtensionIdx:
-	    result = InfoSharedlibCmd(clientData, interp, objc, objv);
-	    break;
-	case ITclVersionIdx:
-	    result = InfoTclVersionCmd(clientData, interp, objc, objv);
-	    break;
-	case IVarsIdx:
-	    result = InfoVarsCmd(clientData, interp, objc, objv);
-	    break;
-    }
-    return result;
+    return TclMakeEnsemble(interp, "info", defaultInfoMap);
 }
 
 /*
@@ -533,27 +395,27 @@ Tcl_InfoObjCmd(clientData, interp, objc, objv)
  *
  * InfoArgsCmd --
  *
- *      Called to implement the "info args" command that returns the
- *      argument list for a procedure. Handles the following syntax:
+ *	Called to implement the "info args" command that returns the argument
+ *	list for a procedure. Handles the following syntax:
  *
- *          info args procName
+ *	    info args procName
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoArgsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoArgsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register Interp *iPtr = (Interp *) interp;
     char *name;
@@ -561,30 +423,29 @@ InfoArgsCmd(dummy, interp, objc, objv)
     CompiledLocal *localPtr;
     Tcl_Obj *listObjPtr;
 
-    if (objc != 3) {
-        Tcl_WrongNumArgs(interp, 2, objv, "procname");
-        return TCL_ERROR;
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "procname");
+	return TCL_ERROR;
     }
 
-    name = Tcl_GetString(objv[2]);
+    name = TclGetString(objv[1]);
     procPtr = TclFindProc(iPtr, name);
     if (procPtr == NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "\"", name, "\" isn't a procedure", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "\"", name, "\" isn't a procedure", NULL);
+	return TCL_ERROR;
     }
 
     /*
      * Build a return list containing the arguments.
      */
-    
-    listObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
+
+    listObjPtr = Tcl_NewListObj(0, NULL);
     for (localPtr = procPtr->firstLocalPtr;  localPtr != NULL;
-            localPtr = localPtr->nextPtr) {
-        if (TclIsVarArgument(localPtr)) {
-            Tcl_ListObjAppendElement(interp, listObjPtr,
+	    localPtr = localPtr->nextPtr) {
+	if (TclIsVarArgument(localPtr)) {
+	    Tcl_ListObjAppendElement(interp, listObjPtr,
 		    Tcl_NewStringObj(localPtr->name, -1));
-        }
+	}
     }
     Tcl_SetObjResult(interp, listObjPtr);
     return TCL_OK;
@@ -595,65 +456,65 @@ InfoArgsCmd(dummy, interp, objc, objv)
  *
  * InfoBodyCmd --
  *
- *      Called to implement the "info body" command that returns the body
- *      for a procedure. Handles the following syntax:
+ *	Called to implement the "info body" command that returns the body for
+ *	a procedure. Handles the following syntax:
  *
- *          info body procName
+ *	    info body procName
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoBodyCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoBodyCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register Interp *iPtr = (Interp *) interp;
     char *name;
     Proc *procPtr;
     Tcl_Obj *bodyPtr, *resultPtr;
-    
-    if (objc != 3) {
-        Tcl_WrongNumArgs(interp, 2, objv, "procname");
-        return TCL_ERROR;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "procname");
+	return TCL_ERROR;
     }
 
-    name = Tcl_GetString(objv[2]);
+    name = TclGetString(objv[1]);
     procPtr = TclFindProc(iPtr, name);
     if (procPtr == NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"\"", name, "\" isn't a procedure", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "\"", name, "\" isn't a procedure", NULL);
+	return TCL_ERROR;
     }
 
-    /* 
+    /*
      * Here we used to return procPtr->bodyPtr, except when the body was
-     * bytecompiled - in that case, the return was a copy of the body's
-     * string rep. In order to better isolate the implementation details
-     * of the compiler/engine subsystem, we now always return a copy of 
-     * the string rep. It is important to return a copy so that later 
-     * manipulations of the object do not invalidate the internal rep.
+     * bytecompiled - in that case, the return was a copy of the body's string
+     * rep. In order to better isolate the implementation details of the
+     * compiler/engine subsystem, we now always return a copy of the string
+     * rep. It is important to return a copy so that later manipulations of
+     * the object do not invalidate the internal rep.
      */
 
     bodyPtr = procPtr->bodyPtr;
     if (bodyPtr->bytes == NULL) {
 	/*
-	 * The string rep might not be valid if the procedure has
-	 * never been run before.  [Bug #545644]
+	 * The string rep might not be valid if the procedure has never been
+	 * run before. [Bug #545644]
 	 */
-	(void) Tcl_GetString(bodyPtr);
+
+	(void) TclGetString(bodyPtr);
     }
     resultPtr = Tcl_NewStringObj(bodyPtr->bytes, bodyPtr->length);
-    
+
     Tcl_SetObjResult(interp, resultPtr);
     return TCL_OK;
 }
@@ -663,37 +524,37 @@ InfoBodyCmd(dummy, interp, objc, objv)
  *
  * InfoCmdCountCmd --
  *
- *      Called to implement the "info cmdcount" command that returns the
- *      number of commands that have been executed. Handles the following
- *      syntax:
+ *	Called to implement the "info cmdcount" command that returns the
+ *	number of commands that have been executed. Handles the following
+ *	syntax:
  *
- *          info cmdcount
+ *	    info cmdcount
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoCmdCountCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoCmdCountCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
-    
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
 
-    Tcl_SetIntObj(Tcl_GetObjResult(interp), iPtr->cmdCount);
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(iPtr->cmdCount));
     return TCL_OK;
 }
 
@@ -702,74 +563,74 @@ InfoCmdCountCmd(dummy, interp, objc, objv)
  *
  * InfoCommandsCmd --
  *
- *	Called to implement the "info commands" command that returns the
- *	list of commands in the interpreter that match an optional pattern.
- *	The pattern, if any, consists of an optional sequence of namespace
- *	names separated by "::" qualifiers, which is followed by a
- *	glob-style pattern that restricts which commands are returned.
- *	Handles the following syntax:
+ *	Called to implement the "info commands" command that returns the list
+ *	of commands in the interpreter that match an optional pattern. The
+ *	pattern, if any, consists of an optional sequence of namespace names
+ *	separated by "::" qualifiers, which is followed by a glob-style
+ *	pattern that restricts which commands are returned. Handles the
+ *	following syntax:
  *
- *          info commands ?pattern?
+ *	    info commands ?pattern?
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoCommandsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoCommandsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *cmdName, *pattern;
-    CONST char *simplePattern;
+    const char *simplePattern;
     register Tcl_HashEntry *entryPtr;
     Tcl_HashSearch search;
     Namespace *nsPtr;
     Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
-    Namespace *currNsPtr   = (Namespace *) Tcl_GetCurrentNamespace(interp);
+    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
     Tcl_Obj *listPtr, *elemObjPtr;
-    int specificNsInPattern = 0;  /* Init. to avoid compiler warning. */
+    int specificNsInPattern = 0;/* Init. to avoid compiler warning. */
     Tcl_Command cmd;
+    int i;
 
     /*
-     * Get the pattern and find the "effective namespace" in which to
-     * list commands.
+     * Get the pattern and find the "effective namespace" in which to list
+     * commands.
      */
 
-    if (objc == 2) {
-        simplePattern = NULL;
+    if (objc == 1) {
+	simplePattern = NULL;
 	nsPtr = currNsPtr;
 	specificNsInPattern = 0;
-    } else if (objc == 3) {
+    } else if (objc == 2) {
 	/*
 	 * From the pattern, get the effective namespace and the simple
-	 * pattern (no namespace qualifiers or ::'s) at the end. If an
-	 * error was found while parsing the pattern, return it. Otherwise,
-	 * if the namespace wasn't found, just leave nsPtr NULL: we will
-	 * return an empty list since no commands there can be found.
+	 * pattern (no namespace qualifiers or ::'s) at the end. If an error
+	 * was found while parsing the pattern, return it. Otherwise, if the
+	 * namespace wasn't found, just leave nsPtr NULL: we will return an
+	 * empty list since no commands there can be found.
 	 */
 
 	Namespace *dummy1NsPtr, *dummy2NsPtr;
-	
 
-	pattern = Tcl_GetString(objv[2]);
-	TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL,
-           /*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr, &simplePattern);
+	pattern = TclGetString(objv[1]);
+	TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL, 0,
+		&nsPtr, &dummy1NsPtr, &dummy2NsPtr, &simplePattern);
 
-	if (nsPtr != NULL) {	/* we successfully found the pattern's ns */
+	if (nsPtr != NULL) {	/* We successfully found the pattern's ns. */
 	    specificNsInPattern = (strcmp(simplePattern, pattern) != 0);
 	}
     } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "?pattern?");
+	return TCL_ERROR;
     }
 
     /*
@@ -781,20 +642,20 @@ InfoCommandsCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Scan through the effective namespace's command table and create a
-     * list with all commands that match the pattern. If a specific
-     * namespace was requested in the pattern, qualify the command names
-     * with the namespace name.
+     * Scan through the effective namespace's command table and create a list
+     * with all commands that match the pattern. If a specific namespace was
+     * requested in the pattern, qualify the command names with the namespace
+     * name.
      */
 
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
+    listPtr = Tcl_NewListObj(0, NULL);
 
     if (simplePattern != NULL && TclMatchIsTrivial(simplePattern)) {
 	/*
-	 * Special case for when the pattern doesn't include any of
-	 * glob's special characters. This lets us avoid scans of any
-	 * hash tables.
+	 * Special case for when the pattern doesn't include any of glob's
+	 * special characters. This lets us avoid scans of any hash tables.
 	 */
+
 	entryPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern);
 	if (entryPtr != NULL) {
 	    if (specificNsInPattern) {
@@ -806,21 +667,48 @@ InfoCommandsCmd(dummy, interp, objc, objv)
 		elemObjPtr = Tcl_NewStringObj(cmdName, -1);
 	    }
 	    Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
-	} else if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
-	    entryPtr = Tcl_FindHashEntry(&globalNsPtr->cmdTable,
-		    simplePattern);
+	    Tcl_SetObjResult(interp, listPtr);
+	    return TCL_OK;
+	}
+	if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
+	    Tcl_HashTable *tablePtr = NULL;	/* Quell warning. */
+
+	    for (i=0 ; i<nsPtr->commandPathLength ; i++) {
+		Namespace *pathNsPtr = nsPtr->commandPathArray[i].nsPtr;
+
+		if (pathNsPtr == NULL) {
+		    continue;
+		}
+		tablePtr = &pathNsPtr->cmdTable;
+		entryPtr = Tcl_FindHashEntry(tablePtr, simplePattern);
+		if (entryPtr != NULL) {
+		    break;
+		}
+	    }
+	    if (entryPtr == NULL) {
+		tablePtr = &globalNsPtr->cmdTable;
+		entryPtr = Tcl_FindHashEntry(tablePtr, simplePattern);
+	    }
 	    if (entryPtr != NULL) {
-		cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr);
+		cmdName = Tcl_GetHashKey(tablePtr, entryPtr);
 		Tcl_ListObjAppendElement(interp, listPtr,
 			Tcl_NewStringObj(cmdName, -1));
+		Tcl_SetObjResult(interp, listPtr);
+		return TCL_OK;
 	    }
 	}
-    } else {
+    } else if (nsPtr->commandPathLength == 0 || specificNsInPattern) {
+	/*
+	 * The pattern is non-trivial, but either there is no explicit path or
+	 * there is an explicit namespace in the pattern. In both cases, the
+	 * old matching scheme is perfect.
+	 */
+
 	entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
 	while (entryPtr != NULL) {
 	    cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr);
 	    if ((simplePattern == NULL)
-	            || Tcl_StringMatch(cmdName, simplePattern)) {
+		    || Tcl_StringMatch(cmdName, simplePattern)) {
 		if (specificNsInPattern) {
 		    cmd = (Tcl_Command) Tcl_GetHashValue(entryPtr);
 		    elemObjPtr = Tcl_NewObj();
@@ -835,19 +723,19 @@ InfoCommandsCmd(dummy, interp, objc, objv)
 
 	/*
 	 * If the effective namespace isn't the global :: namespace, and a
-	 * specific namespace wasn't requested in the pattern, then add in
-	 * all global :: commands that match the simple pattern. Of course,
-	 * we add in only those commands that aren't hidden by a command in
-	 * the effective namespace.
+	 * specific namespace wasn't requested in the pattern, then add in all
+	 * global :: commands that match the simple pattern. Of course, we add
+	 * in only those commands that aren't hidden by a command in the
+	 * effective namespace.
 	 */
-	
+
 	if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
 	    entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search);
 	    while (entryPtr != NULL) {
 		cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr);
 		if ((simplePattern == NULL)
-	                || Tcl_StringMatch(cmdName, simplePattern)) {
-		    if (Tcl_FindHashEntry(&nsPtr->cmdTable, cmdName) == NULL) {
+			|| Tcl_StringMatch(cmdName, simplePattern)) {
+		    if (Tcl_FindHashEntry(&nsPtr->cmdTable,cmdName) == NULL) {
 			Tcl_ListObjAppendElement(interp, listPtr,
 				Tcl_NewStringObj(cmdName, -1));
 		    }
@@ -855,8 +743,97 @@ InfoCommandsCmd(dummy, interp, objc, objv)
 		entryPtr = Tcl_NextHashEntry(&search);
 	    }
 	}
+    } else {
+	/*
+	 * The pattern is non-trivial (can match more than one command name),
+	 * there is an explicit path, and there is no explicit namespace in
+	 * the pattern. This means that we have to traverse the path to
+	 * discover all the commands defined.
+	 */
+
+	Tcl_HashTable addedCommandsTable;
+	int isNew;
+	int foundGlobal = (nsPtr == globalNsPtr);
+
+	/*
+	 * We keep a hash of the objects already added to the result list.
+	 */
+
+	Tcl_InitObjHashTable(&addedCommandsTable);
+
+	entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
+	while (entryPtr != NULL) {
+	    cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr);
+	    if ((simplePattern == NULL)
+		    || Tcl_StringMatch(cmdName, simplePattern)) {
+		elemObjPtr = Tcl_NewStringObj(cmdName, -1);
+		Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
+		(void) Tcl_CreateHashEntry(&addedCommandsTable,
+			(char *)elemObjPtr, &isNew);
+	    }
+	    entryPtr = Tcl_NextHashEntry(&search);
+	}
+
+	/*
+	 * Search the path next.
+	 */
+
+	for (i=0 ; i<nsPtr->commandPathLength ; i++) {
+	    Namespace *pathNsPtr = nsPtr->commandPathArray[i].nsPtr;
+
+	    if (pathNsPtr == NULL) {
+		continue;
+	    }
+	    if (pathNsPtr == globalNsPtr) {
+		foundGlobal = 1;
+	    }
+	    entryPtr = Tcl_FirstHashEntry(&pathNsPtr->cmdTable, &search);
+	    while (entryPtr != NULL) {
+		cmdName = Tcl_GetHashKey(&pathNsPtr->cmdTable, entryPtr);
+		if ((simplePattern == NULL)
+			|| Tcl_StringMatch(cmdName, simplePattern)) {
+		    elemObjPtr = Tcl_NewStringObj(cmdName, -1);
+		    (void) Tcl_CreateHashEntry(&addedCommandsTable,
+			    (char *) elemObjPtr, &isNew);
+		    if (isNew) {
+			Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
+		    } else {
+			TclDecrRefCount(elemObjPtr);
+		    }
+		}
+		entryPtr = Tcl_NextHashEntry(&search);
+	    }
+	}
+
+	/*
+	 * If the effective namespace isn't the global :: namespace, and a
+	 * specific namespace wasn't requested in the pattern, then add in all
+	 * global :: commands that match the simple pattern. Of course, we add
+	 * in only those commands that aren't hidden by a command in the
+	 * effective namespace.
+	 */
+
+	if (!foundGlobal) {
+	    entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search);
+	    while (entryPtr != NULL) {
+		cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr);
+		if ((simplePattern == NULL)
+			|| Tcl_StringMatch(cmdName, simplePattern)) {
+		    elemObjPtr = Tcl_NewStringObj(cmdName, -1);
+		    if (Tcl_FindHashEntry(&addedCommandsTable,
+			    (char *) elemObjPtr) == NULL) {
+			Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
+		    } else {
+			TclDecrRefCount(elemObjPtr);
+		    }
+		}
+		entryPtr = Tcl_NextHashEntry(&search);
+	    }
+	}
+
+	Tcl_DeleteHashTable(&addedCommandsTable);
     }
-    
+
     Tcl_SetObjResult(interp, listPtr);
     return TCL_OK;
 }
@@ -866,40 +843,36 @@ InfoCommandsCmd(dummy, interp, objc, objv)
  *
  * InfoCompleteCmd --
  *
- *      Called to implement the "info complete" command that determines
- *      whether a string is a complete Tcl command. Handles the following
- *      syntax:
+ *	Called to implement the "info complete" command that determines
+ *	whether a string is a complete Tcl command. Handles the following
+ *	syntax:
  *
- *          info complete command
+ *	    info complete command
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoCompleteCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoCompleteCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    if (objc != 3) {
-        Tcl_WrongNumArgs(interp, 2, objv, "command");
-        return TCL_ERROR;
-    }
-
-    if (TclObjCommandComplete(objv[2])) {
-	Tcl_SetIntObj(Tcl_GetObjResult(interp), 1);
-    } else {
-	Tcl_SetIntObj(Tcl_GetObjResult(interp), 0);
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "command");
+	return TCL_ERROR;
     }
 
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(
+	    TclObjCommandComplete(objv[1])));
     return TCL_OK;
 }
 
@@ -908,28 +881,27 @@ InfoCompleteCmd(dummy, interp, objc, objv)
  *
  * InfoDefaultCmd --
  *
- *      Called to implement the "info default" command that returns the
- *      default value for a procedure argument. Handles the following
- *      syntax:
+ *	Called to implement the "info default" command that returns the
+ *	default value for a procedure argument. Handles the following syntax:
  *
- *          info default procName arg varName
+ *	    info default procName arg varName
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoDefaultCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoDefaultCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
     char *procName, *argName, *varName;
@@ -937,485 +909,471 @@ InfoDefaultCmd(dummy, interp, objc, objv)
     CompiledLocal *localPtr;
     Tcl_Obj *valueObjPtr;
 
-    if (objc != 5) {
-        Tcl_WrongNumArgs(interp, 2, objv, "procname arg varname");
-        return TCL_ERROR;
+    if (objc != 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "procname arg varname");
+	return TCL_ERROR;
     }
 
-    procName = Tcl_GetString(objv[2]);
-    argName = Tcl_GetString(objv[3]);
+    procName = TclGetString(objv[1]);
+    argName = TclGetString(objv[2]);
 
     procPtr = TclFindProc(iPtr, procName);
     if (procPtr == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"\"", procName, "\" isn't a procedure", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "\"", procName, "\" isn't a procedure",NULL);
+	return TCL_ERROR;
     }
 
     for (localPtr = procPtr->firstLocalPtr;  localPtr != NULL;
-            localPtr = localPtr->nextPtr) {
-        if (TclIsVarArgument(localPtr)
+	    localPtr = localPtr->nextPtr) {
+	if (TclIsVarArgument(localPtr)
 		&& (strcmp(argName, localPtr->name) == 0)) {
-            if (localPtr->defValuePtr != NULL) {
-		valueObjPtr = Tcl_ObjSetVar2(interp, objv[4], NULL,
+	    if (localPtr->defValuePtr != NULL) {
+		valueObjPtr = Tcl_ObjSetVar2(interp, objv[3], NULL,
 			localPtr->defValuePtr, 0);
-                if (valueObjPtr == NULL) {
-                    defStoreError:
-		    varName = Tcl_GetString(objv[4]);
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-	                    "couldn't store default value in variable \"",
-			    varName, "\"", (char *) NULL);
-                    return TCL_ERROR;
-                }
-		Tcl_SetIntObj(Tcl_GetObjResult(interp), 1);
-            } else {
-                Tcl_Obj *nullObjPtr = Tcl_NewObj();
-		Tcl_IncrRefCount(nullObjPtr);
-                valueObjPtr = Tcl_ObjSetVar2(interp, objv[4], NULL,
+		if (valueObjPtr == NULL) {
+		    goto defStoreError;
+		}
+		Tcl_SetObjResult(interp, Tcl_NewIntObj(1));
+	    } else {
+		Tcl_Obj *nullObjPtr = Tcl_NewObj();
+		valueObjPtr = Tcl_ObjSetVar2(interp, objv[3], NULL,
 			nullObjPtr, 0);
-		Tcl_DecrRefCount(nullObjPtr); /* free unneeded obj */
-                if (valueObjPtr == NULL) {
-                    goto defStoreError;
-                }
-		Tcl_SetIntObj(Tcl_GetObjResult(interp), 0);
-            }
-            return TCL_OK;
-        }
-    }
-
-    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-	    "procedure \"", procName, "\" doesn't have an argument \"",
-	    argName, "\"", (char *) NULL);
+		if (valueObjPtr == NULL) {
+		    goto defStoreError;
+		}
+		Tcl_SetObjResult(interp, Tcl_NewIntObj(0));
+	    }
+	    return TCL_OK;
+	}
+    }
+
+    Tcl_AppendResult(interp, "procedure \"", procName,
+	    "\" doesn't have an argument \"", argName, "\"", NULL);
+    return TCL_ERROR;
+
+  defStoreError:
+    varName = TclGetString(objv[3]);
+    Tcl_AppendResult(interp, "couldn't store default value in variable \"",
+	    varName, "\"", NULL);
     return TCL_ERROR;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * InfoExistsCmd --
+ * TclInfoExistsCmd --
  *
- *      Called to implement the "info exists" command that determines
- *      whether a variable exists. Handles the following syntax:
+ *	Called to implement the "info exists" command that determines whether
+ *	a variable exists. Handles the following syntax:
  *
- *          info exists varName
+ *	    info exists varName
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
-static int
-InfoExistsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+int
+TclInfoExistsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *varName;
     Var *varPtr;
 
-    if (objc != 3) {
-        Tcl_WrongNumArgs(interp, 2, objv, "varName");
-        return TCL_ERROR;
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "varName");
+	return TCL_ERROR;
     }
 
-    varName = Tcl_GetString(objv[2]);
+    varName = TclGetString(objv[1]);
     varPtr = TclVarTraceExists(interp, varName);
-    if ((varPtr != NULL) && !TclIsVarUndefined(varPtr)) {
-        Tcl_SetIntObj(Tcl_GetObjResult(interp), 1);
-    } else {
-        Tcl_SetIntObj(Tcl_GetObjResult(interp), 0);
-    }
+
+    Tcl_SetObjResult(interp,
+	    Tcl_NewBooleanObj(varPtr && varPtr->value.objPtr));
     return TCL_OK;
 }
 
-#ifdef TCL_TIP280
 /*
  *----------------------------------------------------------------------
  *
  * InfoFrameCmd --
  *	TIP #280
  *
- *      Called to implement the "info frame" command that returns the
- *      location of either the currently executing command, or its caller.
- *      Handles the following syntax:
+ *	Called to implement the "info frame" command that returns the location
+ *	of either the currently executing command, or its caller. Handles the
+ *	following syntax:
  *
- *          info frame ?number?
+ *		info frame ?number?
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoFrameCmd(dummy, interp, objc, objv)
-     ClientData dummy;		/* Not used. */
-     Tcl_Interp *interp;		/* Current interpreter. */
-     int objc;			/* Number of arguments. */
-     Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoFrameCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
+    int level;
+    CmdFrame *framePtr;
 
-    if (objc == 2) {
-	/* just "info frame" */
-        int levels = (iPtr->cmdFramePtr == NULL
-		      ? 0
-		      : iPtr->cmdFramePtr->level);
+    if (objc == 1) {
+	/*
+	 * Just "info frame".
+	 */
+
+	int levels =
+		(iPtr->cmdFramePtr == NULL ? 0 : iPtr->cmdFramePtr->level);
 
 	Tcl_SetObjResult(interp, Tcl_NewIntObj (levels));
-        return TCL_OK;
-
-    } else if (objc == 3) {
-	/* "info frame level" */
-        int       level;
-	CmdFrame *framePtr;
-
-        if (Tcl_GetIntFromObj(interp, objv[2], &level) != TCL_OK) {
-            return TCL_ERROR;
-        }
-        if (level <= 0) {
-	    /* Relative adressing */
-
-            if (iPtr->cmdFramePtr == NULL) {
-                levelError:
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"bad level \"",
-			Tcl_GetString(objv[2]),
-			"\"", (char *) NULL);
-                return TCL_ERROR;
-            }
-            /* Convert to absolute. */
-
-            level += iPtr->cmdFramePtr->level;
-        }
-        for (framePtr = iPtr->cmdFramePtr;
-	     framePtr != NULL;
-	     framePtr = framePtr->nextPtr) {
+	return TCL_OK;
+    } else if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?number?");
+	return TCL_ERROR;
+    }
 
-	    if (framePtr->level == level) {
-                break;
-            }
-        }
-        if (framePtr == NULL) {
-            goto levelError;
-        }
+    /*
+     * We've got "info frame level" and must parse the level first.
+     */
 
+    if (TclGetIntFromObj(interp, objv[1], &level) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (level <= 0) {
 	/*
-	 * Pull the information and construct the dictionary to return, as
-	 * list. Regarding use of the CmdFrame fields see tclInt.h, and its
-	 * definition.
+	 * Negative levels are adressing relative to the current frame's
+	 * depth.
 	 */
 
-	{
-	    Tcl_Obj* lv [20]; /* Keep uptodate when more keys are added to the dict */
-	    int      lc = 0;
+	if (iPtr->cmdFramePtr == NULL) {
+	levelError:
+	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad level \"",
+		    TclGetString(objv[1]), "\"", NULL);
+	    return TCL_ERROR;
+	}
 
-	    /* This array is indexed by the TCL_LOCATION_... values, except
-	     * for _LAST.
-	     */
+	/*
+	 * Convert to absolute.
+	 */
 
-	    static CONST char* typeString [TCL_LOCATION_LAST] = {
-	       "eval", "eval", "eval", "precompiled", "source", "proc"
-	    };
+	level += iPtr->cmdFramePtr->level;
+    }
 
-	    Proc*    procPtr = framePtr->framePtr ? framePtr->framePtr->procPtr : NULL;
+    for (framePtr = iPtr->cmdFramePtr; framePtr != NULL;
+	    framePtr = framePtr->nextPtr) {
+	if (framePtr->level == level) {
+	    break;
+	}
+    }
+    if (framePtr == NULL) {
+	goto levelError;
+    }
 
-	    switch (framePtr->type) {
-	    case TCL_LOCATION_EVAL:
-	        /* Evaluation, dynamic script. Type, line, cmd, the latter
-		 * through str. */
+    Tcl_SetObjResult(interp, TclInfoFrame(interp, framePtr));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInfoFrame --
+ *
+ *	Core of InfoFrameCmd, returns TIP280 dict for a given frame.
+ *
+ * Results:
+ *	Returns TIP280 dict.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
 
-	        lv [lc ++] = Tcl_NewStringObj ("type",-1);
-		lv [lc ++] = Tcl_NewStringObj (typeString [framePtr->type],-1);
-		lv [lc ++] = Tcl_NewStringObj ("line",-1);
-		lv [lc ++] = Tcl_NewIntObj    (framePtr->line[0]);
-		lv [lc ++] = Tcl_NewStringObj ("cmd",-1);
-		lv [lc ++] = Tcl_NewStringObj (framePtr->cmd.str.cmd,
-					       framePtr->cmd.str.len);
-		break;
+Tcl_Obj *
+TclInfoFrame(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    CmdFrame *framePtr)		/* Frame to get info for. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *lv[20];		/* Keep uptodate when more keys are added to
+				 * the dict. */
+    int lc = 0;
+    /*
+     * This array is indexed by the TCL_LOCATION_... values, except
+     * for _LAST.
+     */
+    static const char *typeString[TCL_LOCATION_LAST] = {
+	"eval", "eval", "eval", "precompiled", "source", "proc"
+    };
+    Tcl_Obj *tmpObj;
+    Proc *procPtr =
+	framePtr->framePtr ? framePtr->framePtr->procPtr : NULL;
 
-	    case TCL_LOCATION_EVAL_LIST:
-	        /* List optimized evaluation. Type, line, cmd, the latter
-		 * through listPtr, possibly a frame. */
+   /*
+     * Pull the information and construct the dictionary to return, as list.
+     * Regarding use of the CmdFrame fields see tclInt.h, and its definition.
+     */
 
-	        lv [lc ++] = Tcl_NewStringObj ("type",-1);
-		lv [lc ++] = Tcl_NewStringObj (typeString [framePtr->type],-1);
-		lv [lc ++] = Tcl_NewStringObj ("line",-1);
-		lv [lc ++] = Tcl_NewIntObj    (1);
+#define ADD_PAIR(name, value) \
+	TclNewLiteralStringObj(tmpObj, name); \
+	lv[lc++] = tmpObj; \
+	lv[lc++] = (value)
 
-		/* We put a duplicate of the command list obj into the result
-		 * to ensure that the 'pure List'-property of the command
-		 * itself is not destroyed. Otherwise the query here would
-		 * disable the list optimization path in Tcl_EvalObjEx.
-		 */
+    switch (framePtr->type) {
+    case TCL_LOCATION_EVAL:
+	/*
+	 * Evaluation, dynamic script. Type, line, cmd, the latter through
+	 * str.
+	 */
 
-		lv [lc ++] =  Tcl_NewStringObj ("cmd",-1);
-		lv [lc ++] =  Tcl_DuplicateObj (framePtr->cmd.listPtr);
-		break;
+	ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1));
+	ADD_PAIR("line", Tcl_NewIntObj(framePtr->line[0]));
+	ADD_PAIR("cmd", Tcl_NewStringObj(framePtr->cmd.str.cmd,
+		framePtr->cmd.str.len));
+	break;
 
-	    case TCL_LOCATION_PREBC:
-	        /* Precompiled. Result contains the type as signal, nothing
-		 * else */
+    case TCL_LOCATION_EVAL_LIST:
+	/*
+	 * List optimized evaluation. Type, line, cmd, the latter through
+	 * listPtr, possibly a frame.
+	 */
 
-	        lv [lc ++] = Tcl_NewStringObj ("type",-1);
-		lv [lc ++] = Tcl_NewStringObj (typeString [framePtr->type],-1);
-		break;
+	ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1));
+	ADD_PAIR("line", Tcl_NewIntObj(1));
 
-	    case TCL_LOCATION_BC: {
-	        /* Execution of bytecode. Talk to the BC engine to fill out
-		 * the frame. */
+	/*
+	 * We put a duplicate of the command list obj into the result to
+	 * ensure that the 'pure List'-property of the command itself is not
+	 * destroyed. Otherwise the query here would disable the list
+	 * optimization path in Tcl_EvalObjEx.
+	 */
 
-	        CmdFrame f = *framePtr;
+	ADD_PAIR("cmd", Tcl_DuplicateObj(framePtr->cmd.listPtr));
+	break;
 
-		/* Note: Type BC => f.data.eval.path    is not used.
-		 *                  f.data.tebc.codePtr is used instead.
-		 */
+    case TCL_LOCATION_PREBC:
+	/*
+	 * Precompiled. Result contains the type as signal, nothing else.
+	 */
 
-	        TclGetSrcInfoForPc (&f);
-		/* Now filled:        cmd.str.(cmd,len), line */
-		/* Possibly modified: type, path! */
+	ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1));
+	break;
 
-	        lv [lc ++] = Tcl_NewStringObj ("type",-1);
-		lv [lc ++] = Tcl_NewStringObj (typeString [f.type],-1);
-		lv [lc ++] = Tcl_NewStringObj ("line",-1);
-		lv [lc ++] = Tcl_NewIntObj    (f.line[0]);
+    case TCL_LOCATION_BC: {
+	/*
+	 * Execution of bytecode. Talk to the BC engine to fill out the frame.
+	 */
 
-		if (f.type == TCL_LOCATION_SOURCE) {
-		    lv [lc ++] = Tcl_NewStringObj ("file",-1);
-		    lv [lc ++] = f.data.eval.path;
-		    /* Death of reference by TclGetSrcInfoForPc */
-		    Tcl_DecrRefCount (f.data.eval.path);
-		}
+	CmdFrame *fPtr;
 
-		lv [lc ++] = Tcl_NewStringObj ("cmd",-1);
-		lv [lc ++] = Tcl_NewStringObj (f.cmd.str.cmd, f.cmd.str.len);
-	        break;
-	    }
+	fPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame));
+	*fPtr = *framePtr;
 
-	    case TCL_LOCATION_SOURCE:
-	        /* Evaluation of a script file */
-
-	        lv [lc ++] = Tcl_NewStringObj ("type",-1);
-		lv [lc ++] = Tcl_NewStringObj (typeString [framePtr->type],-1);
-		lv [lc ++] = Tcl_NewStringObj ("line",-1);
-		lv [lc ++] = Tcl_NewIntObj    (framePtr->line[0]);
-		lv [lc ++] = Tcl_NewStringObj ("file",-1);
-		lv [lc ++] = framePtr->data.eval.path;
-		/* Refcount framePtr->data.eval.path goes up when lv
-		 * is converted into the result list object.
-		 */
-		lv [lc ++] = Tcl_NewStringObj ("cmd",-1);
-		lv [lc ++] = Tcl_NewStringObj (framePtr->cmd.str.cmd,
-					       framePtr->cmd.str.len);
-		break;
+	/*
+	 * Note:
+	 * Type BC => f.data.eval.path	  is not used.
+	 *	      f.data.tebc.codePtr is used instead.
+	 */
 
-	    case TCL_LOCATION_PROC:
-		Tcl_Panic ("TCL_LOCATION_PROC found in standard frame");
-		break;
-	    }
+	TclGetSrcInfoForPc(fPtr);
+
+	/*
+	 * Now filled: cmd.str.(cmd,len), line
+	 * Possibly modified: type, path!
+	 */
+
+	ADD_PAIR("type", Tcl_NewStringObj(typeString[fPtr->type], -1));
+	if (fPtr->line) {
+	    ADD_PAIR("line", Tcl_NewIntObj(fPtr->line[0]));
+	}
+
+	if (fPtr->type == TCL_LOCATION_SOURCE) {
+	    ADD_PAIR("file", fPtr->data.eval.path);
 
 	    /*
-	     * 'proc'. Common to all frame types. Conditional on having an
-	     * associated Procedure CallFrame.
+	     * Death of reference by TclGetSrcInfoForPc.
 	     */
 
-	    if (procPtr != NULL) {
-		Tcl_HashEntry* namePtr = procPtr->cmdPtr->hPtr;
-		/*
-		 * ITcl seems to provide us with weird, maybe bogus Command
-		 * structures (methods?)  which may have no HashEntry pointing
-		 * to the name information, or a HashEntry without owning
-		 * HashTable. Therefore check again that our data is valid.
-		 */
-		if (namePtr && namePtr->tablePtr) {
-		    char* procName = Tcl_GetHashKey (namePtr->tablePtr, namePtr);
-		    char* nsName   = procPtr->cmdPtr->nsPtr->fullName;
+	    Tcl_DecrRefCount(fPtr->data.eval.path);
+	}
 
-		    lv [lc ++] = Tcl_NewStringObj ("proc",-1);
-		    lv [lc ++] = Tcl_NewStringObj (nsName,-1);
+	ADD_PAIR("cmd",
+		Tcl_NewStringObj(fPtr->cmd.str.cmd, fPtr->cmd.str.len));
+	TclStackFree(interp, fPtr);
+	break;
+    }
 
-		    if (strcmp (nsName, "::") != 0) {
-			Tcl_AppendToObj (lv [lc-1], "::", -1);
-		    }
-		    Tcl_AppendToObj (lv [lc-1], procName, -1);
-		}
-	    }
+    case TCL_LOCATION_SOURCE:
+	/*
+	 * Evaluation of a script file.
+	 */
 
-	    /* 'level'. Common to all frame types. Conditional on having an
-	     * associated _visible_ CallFrame */
+	ADD_PAIR("type", Tcl_NewStringObj(typeString[framePtr->type], -1));
+	ADD_PAIR("line", Tcl_NewIntObj(framePtr->line[0]));
+	ADD_PAIR("file", framePtr->data.eval.path);
 
-	    if ((framePtr->framePtr != NULL) && (iPtr->varFramePtr != NULL)) {
-	        CallFrame* current = framePtr->framePtr;
-		CallFrame* top     = iPtr->varFramePtr;
-		CallFrame* idx;
+	/*
+	 * Refcount framePtr->data.eval.path goes up when lv is converted into
+	 * the result list object.
+	 */
 
-		for (idx = top;
-		     idx != NULL;
-		     idx = idx->callerVarPtr) {
-		    if (idx == current) {
-		        int c = framePtr->framePtr->level;
-			int t = iPtr->varFramePtr->level;
+	ADD_PAIR("cmd", Tcl_NewStringObj(framePtr->cmd.str.cmd,
+		framePtr->cmd.str.len));
+	break;
 
-			lv [lc ++] = Tcl_NewStringObj ("level",-1);
-			lv [lc ++] = Tcl_NewIntObj (t - c);
-			break;
-		    }
-		}
+    case TCL_LOCATION_PROC:
+	Tcl_Panic("TCL_LOCATION_PROC found in standard frame");
+	break;
+    }
+
+    /*
+     * 'proc'. Common to all frame types. Conditional on having an associated
+     * Procedure CallFrame.
+     */
+
+    if (procPtr != NULL) {
+	Tcl_HashEntry *namePtr = procPtr->cmdPtr->hPtr;
+
+	if (namePtr) {
+	    /*
+	     * This is a regular command.
+	     */
+
+	    char *procName = Tcl_GetHashKey(namePtr->tablePtr, namePtr);
+	    char *nsName = procPtr->cmdPtr->nsPtr->fullName;
+
+	    ADD_PAIR("proc", Tcl_NewStringObj(nsName, -1));
+
+	    if (strcmp(nsName, "::") != 0) {
+		Tcl_AppendToObj(lv[lc-1], "::", -1);
 	    }
+	    Tcl_AppendToObj(lv[lc-1], procName, -1);
+	} else if (procPtr->cmdPtr->clientData) {
+	    ExtraFrameInfo *efiPtr = procPtr->cmdPtr->clientData;
+	    int i;
 
-	    Tcl_SetObjResult(interp, Tcl_NewListObj (lc, lv));
-	    return TCL_OK;
+	    /*
+	     * This is a non-standard command. Luckily, it's told us how to
+	     * render extra information about its frame.
+	     */
+
+	    for (i=0 ; i<efiPtr->length ; i++) {
+		lv[lc++] = Tcl_NewStringObj(efiPtr->fields[i].name, -1);
+		if (efiPtr->fields[i].proc) {
+		    lv[lc++] =
+			efiPtr->fields[i].proc(efiPtr->fields[i].clientData);
+		} else {
+		    lv[lc++] = efiPtr->fields[i].clientData;
+		}
+	    }
 	}
     }
 
-    Tcl_WrongNumArgs(interp, 2, objv, "?number?");
+    /*
+     * 'level'. Common to all frame types. Conditional on having an associated
+     * _visible_ CallFrame.
+     */
 
-    return TCL_ERROR;
+    if ((framePtr->framePtr != NULL) && (iPtr->varFramePtr != NULL)) {
+	CallFrame *current = framePtr->framePtr;
+	CallFrame *top = iPtr->varFramePtr;
+	CallFrame *idx;
+
+	for (idx=top ; idx!=NULL ; idx=idx->callerVarPtr) {
+	    if (idx == current) {
+		int c = framePtr->framePtr->level;
+		int t = iPtr->varFramePtr->level;
+
+		ADD_PAIR("level", Tcl_NewIntObj(t - c));
+		break;
+	    }
+	}
+    }
+
+    return Tcl_NewListObj(lc, lv);
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
  *
  * InfoFunctionsCmd --
  *
- *      Called to implement the "info functions" command that returns the
- *      list of math functions matching an optional pattern. Handles the
- *      following syntax:
+ *	Called to implement the "info functions" command that returns the list
+ *	of math functions matching an optional pattern. Handles the following
+ *	syntax:
  *
- *          info functions ?pattern?
+ *	    info functions ?pattern?
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoFunctionsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoFunctionsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    char *pattern;
-    Tcl_Obj *listPtr;
-
-    if (objc == 2) {
-        pattern = NULL;
-    } else if (objc == 3) {
-        pattern = Tcl_GetString(objv[2]);
-    } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
-        return TCL_ERROR;
-    }
+    Tcl_Obj *script;
+    int code;
 
-    listPtr = Tcl_ListMathFuncs(interp, pattern);
-    if (listPtr == NULL) {
+    if (objc > 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?pattern?");
 	return TCL_ERROR;
     }
-    Tcl_SetObjResult(interp, listPtr);
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * InfoGlobalsCmd --
- *
- *      Called to implement the "info globals" command that returns the list
- *      of global variables matching an optional pattern. Handles the
- *      following syntax:
- *
- *          info globals ?pattern?
- *
- * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
- *
- * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
- *
- *----------------------------------------------------------------------
- */
 
-static int
-InfoGlobalsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
-{
-    char *varName, *pattern;
-    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
-    register Tcl_HashEntry *entryPtr;
-    Tcl_HashSearch search;
-    Var *varPtr;
-    Tcl_Obj *listPtr;
+    script = Tcl_NewStringObj(
+"	    ::apply [::list {{pattern *}} {\n"
+"		::set cmds {}\n"
+"		::foreach cmd [::info commands ::tcl::mathfunc::$pattern] {\n"
+"		    ::lappend cmds [::namespace tail $cmd]\n"
+"		}\n"
+"		::foreach cmd [::info commands tcl::mathfunc::$pattern] {\n"
+"		    ::set cmd [::namespace tail $cmd]\n"
+"		    ::if {$cmd ni $cmds} {\n"
+"			::lappend cmds $cmd\n"
+"		    }\n"
+"		}\n"
+"		::return $cmds\n"
+"	    } [::namespace current]] ", -1);
 
     if (objc == 2) {
-        pattern = NULL;
-    } else if (objc == 3) {
-	pattern = Tcl_GetString(objv[2]);
-	/*
-	 * Strip leading global-namespace qualifiers. [Bug 1057461]
-	 */
-	if (pattern[0] == ':' && pattern[1] == ':') {
-	    while (*pattern == ':') {
-		pattern++;
-	    }
-	}
-    } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
-        return TCL_ERROR;
-    }
+	Tcl_Obj *arg = Tcl_NewListObj(1, &(objv[1]));
 
-    /*
-     * Scan through the global :: namespace's variable table and create a
-     * list of all global variables that match the pattern.
-     */
-    
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-    if (pattern != NULL && TclMatchIsTrivial(pattern)) {
-	entryPtr = Tcl_FindHashEntry(&globalNsPtr->varTable, pattern);
- 	if (entryPtr != NULL) {
-	    varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-	    if (!TclIsVarUndefined(varPtr)) {
-		Tcl_ListObjAppendElement(interp, listPtr,
-			Tcl_NewStringObj(pattern, -1));
-	    }
-	}
-    } else {
-	for (entryPtr = Tcl_FirstHashEntry(&globalNsPtr->varTable, &search);
-		entryPtr != NULL;
-		entryPtr = Tcl_NextHashEntry(&search)) {
-	    varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-	    if (TclIsVarUndefined(varPtr)) {
-		continue;
-	    }
-	    varName = Tcl_GetHashKey(&globalNsPtr->varTable, entryPtr);
-	    if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) {
-		Tcl_ListObjAppendElement(interp, listPtr,
-			Tcl_NewStringObj(varName, -1));
-	    }
-	}
+	Tcl_AppendObjToObj(script, arg);
+	Tcl_DecrRefCount(arg);
     }
-    Tcl_SetObjResult(interp, listPtr);
-    return TCL_OK;
+
+    Tcl_IncrRefCount(script);
+    code = Tcl_EvalObjEx(interp, script, 0);
+
+    Tcl_DecrRefCount(script);
+
+    return code;
 }
 
 /*
@@ -1423,43 +1381,42 @@ InfoGlobalsCmd(dummy, interp, objc, objv)
  *
  * InfoHostnameCmd --
  *
- *      Called to implement the "info hostname" command that returns the
- *      host name. Handles the following syntax:
+ *	Called to implement the "info hostname" command that returns the host
+ *	name. Handles the following syntax:
  *
- *          info hostname
+ *	    info hostname
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoHostnameCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoHostnameCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    CONST char *name;
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+    const char *name;
+
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
 
     name = Tcl_GetHostName();
     if (name) {
-	Tcl_SetStringObj(Tcl_GetObjResult(interp), name, -1);
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(name, -1));
 	return TCL_OK;
-    } else {
-	Tcl_SetStringObj(Tcl_GetObjResult(interp),
-		"unable to determine name of host", -1);
-	return TCL_ERROR;
     }
+    Tcl_SetResult(interp, "unable to determine name of host", TCL_STATIC);
+    return TCL_ERROR;
 }
 
 /*
@@ -1467,71 +1424,69 @@ InfoHostnameCmd(dummy, interp, objc, objv)
  *
  * InfoLevelCmd --
  *
- *      Called to implement the "info level" command that returns
- *      information about the call stack. Handles the following syntax:
+ *	Called to implement the "info level" command that returns information
+ *	about the call stack. Handles the following syntax:
  *
- *          info level ?number?
+ *	    info level ?number?
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoLevelCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoLevelCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
-    int level;
-    CallFrame *framePtr;
-    Tcl_Obj *listPtr;
 
-    if (objc == 2) {		/* just "info level" */
-        if (iPtr->varFramePtr == NULL) {
-            Tcl_SetIntObj(Tcl_GetObjResult(interp), 0);
-        } else {
-            Tcl_SetIntObj(Tcl_GetObjResult(interp), iPtr->varFramePtr->level);
-        }
-        return TCL_OK;
-    } else if (objc == 3) {
-        if (Tcl_GetIntFromObj(interp, objv[2], &level) != TCL_OK) {
-            return TCL_ERROR;
-        }
-        if (level <= 0) {
-            if (iPtr->varFramePtr == NULL) {
-                levelError:
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"bad level \"",
-			Tcl_GetString(objv[2]),
-			"\"", (char *) NULL);
-                return TCL_ERROR;
-            }
-            level += iPtr->varFramePtr->level;
-        }
-        for (framePtr = iPtr->varFramePtr;  framePtr != NULL;
-                framePtr = framePtr->callerVarPtr) {
-            if (framePtr->level == level) {
-                break;
-            }
-        }
-        if (framePtr == NULL) {
-            goto levelError;
-        }
-
-        listPtr = Tcl_NewListObj(framePtr->objc, framePtr->objv);
-        Tcl_SetObjResult(interp, listPtr);
-        return TCL_OK;
-    }
-
-    Tcl_WrongNumArgs(interp, 2, objv, "?number?");
+    if (objc == 1) {		/* Just "info level" */
+	Tcl_SetObjResult(interp, Tcl_NewIntObj(iPtr->varFramePtr->level));
+	return TCL_OK;
+    }
+
+    if (objc == 2) {
+	int level;
+	CallFrame *framePtr, *rootFramePtr = iPtr->rootFramePtr;
+
+	if (TclGetIntFromObj(interp, objv[1], &level) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (level <= 0) {
+	    if (iPtr->varFramePtr == rootFramePtr) {
+		goto levelError;
+	    }
+	    level += iPtr->varFramePtr->level;
+	}
+	for (framePtr=iPtr->varFramePtr ; framePtr!=rootFramePtr;
+		framePtr=framePtr->callerVarPtr) {
+	    if (framePtr->level == level) {
+		break;
+	    }
+	}
+	if (framePtr == rootFramePtr) {
+	    goto levelError;
+	}
+
+	Tcl_SetObjResult(interp,
+		Tcl_NewListObj(framePtr->objc, framePtr->objv));
+	return TCL_OK;
+    }
+
+    Tcl_WrongNumArgs(interp, 1, objv, "?number?");
+    return TCL_ERROR;
+
+  levelError:
+    Tcl_AppendResult(interp, "bad level \"", TclGetString(objv[1]), "\"",
+	    NULL);
     return TCL_ERROR;
 }
 
@@ -1540,43 +1495,42 @@ InfoLevelCmd(dummy, interp, objc, objv)
  *
  * InfoLibraryCmd --
  *
- *      Called to implement the "info library" command that returns the
- *      library directory for the Tcl installation. Handles the following
- *      syntax:
+ *	Called to implement the "info library" command that returns the
+ *	library directory for the Tcl installation. Handles the following
+ *	syntax:
  *
- *          info library
+ *	    info library
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoLibraryCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoLibraryCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    CONST char *libDirName;
+    const char *libDirName;
 
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
 
     libDirName = Tcl_GetVar(interp, "tcl_library", TCL_GLOBAL_ONLY);
     if (libDirName != NULL) {
-        Tcl_SetStringObj(Tcl_GetObjResult(interp), libDirName, -1);
-        return TCL_OK;
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(libDirName, -1));
+	return TCL_OK;
     }
-    Tcl_SetStringObj(Tcl_GetObjResult(interp), 
-            "no library has been specified for Tcl", -1);
+    Tcl_SetResult(interp, "no library has been specified for Tcl",TCL_STATIC);
     return TCL_ERROR;
 }
 
@@ -1585,174 +1539,42 @@ InfoLibraryCmd(dummy, interp, objc, objv)
  *
  * InfoLoadedCmd --
  *
- *      Called to implement the "info loaded" command that returns the
- *      packages that have been loaded into an interpreter. Handles the
- *      following syntax:
+ *	Called to implement the "info loaded" command that returns the
+ *	packages that have been loaded into an interpreter. Handles the
+ *	following syntax:
  *
- *          info loaded ?interp?
+ *	    info loaded ?interp?
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoLoadedCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoLoadedCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *interpName;
-    int result;
 
-    if ((objc != 2) && (objc != 3)) {
-        Tcl_WrongNumArgs(interp, 2, objv, "?interp?");
-        return TCL_ERROR;
+    if ((objc != 1) && (objc != 2)) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?interp?");
+	return TCL_ERROR;
     }
 
-    if (objc == 2) {		/* get loaded pkgs in all interpreters */
+    if (objc == 1) {		/* Get loaded pkgs in all interpreters. */
 	interpName = NULL;
-    } else {			/* get pkgs just in specified interp */
-	interpName = Tcl_GetString(objv[2]);
-    }
-    result = TclGetLoadedPackages(interp, interpName);
-    return result;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * InfoLocalsCmd --
- *
- *      Called to implement the "info locals" command to return a list of
- *      local variables that match an optional pattern. Handles the
- *      following syntax:
- *
- *          info locals ?pattern?
- *
- * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
- *
- * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-InfoLocalsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
-{
-    Interp *iPtr = (Interp *) interp;
-    char *pattern;
-    Tcl_Obj *listPtr;
-
-    if (objc == 2) {
-        pattern = NULL;
-    } else if (objc == 3) {
-        pattern = Tcl_GetString(objv[2]);
-    } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
-        return TCL_ERROR;
-    }
-    
-    if (iPtr->varFramePtr == NULL || !iPtr->varFramePtr->isProcCallFrame) {
-        return TCL_OK;
-    }
-
-    /*
-     * Return a list containing names of first the compiled locals (i.e. the
-     * ones stored in the call frame), then the variables in the local hash
-     * table (if one exists).
-     */
-    
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-    AppendLocals(interp, listPtr, pattern, 0);
-    Tcl_SetObjResult(interp, listPtr);
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * AppendLocals --
- *
- *	Append the local variables for the current frame to the
- *	specified list object.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-AppendLocals(interp, listPtr, pattern, includeLinks)
-    Tcl_Interp *interp;		/* Current interpreter. */
-    Tcl_Obj *listPtr;		/* List object to append names to. */
-    CONST char *pattern;	/* Pattern to match against. */
-    int includeLinks;		/* 1 if upvars should be included, else 0. */
-{
-    Interp *iPtr = (Interp *) interp;
-    CompiledLocal *localPtr;
-    Var *varPtr;
-    int i, localVarCt;
-    char *varName;
-    Tcl_HashTable *localVarTablePtr;
-    register Tcl_HashEntry *entryPtr;
-    Tcl_HashSearch search;
-
-    localPtr = iPtr->varFramePtr->procPtr->firstLocalPtr;
-    localVarCt = iPtr->varFramePtr->numCompiledLocals;
-    varPtr = iPtr->varFramePtr->compiledLocals;
-    localVarTablePtr = iPtr->varFramePtr->varTablePtr;
-
-    for (i = 0; i < localVarCt; i++) {
-	/*
-	 * Skip nameless (temporary) variables and undefined variables
-	 */
-
-	if (!TclIsVarTemporary(localPtr) && !TclIsVarUndefined(varPtr)
-	        && (includeLinks || !TclIsVarLink(varPtr))) {
-	    varName = varPtr->name;
-	    if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) {
-		Tcl_ListObjAppendElement(interp, listPtr,
-		        Tcl_NewStringObj(varName, -1));
-	    }
-        }
-	varPtr++;
-	localPtr = localPtr->nextPtr;
-    }
-    
-    if (localVarTablePtr != NULL) {
-	for (entryPtr = Tcl_FirstHashEntry(localVarTablePtr, &search);
-	        entryPtr != NULL;
-                entryPtr = Tcl_NextHashEntry(&search)) {
-	    varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-	    if (!TclIsVarUndefined(varPtr)
-		    && (includeLinks || !TclIsVarLink(varPtr))) {
-		varName = Tcl_GetHashKey(localVarTablePtr, entryPtr);
-		if ((pattern == NULL)
-		        || Tcl_StringMatch(varName, pattern)) {
-		    Tcl_ListObjAppendElement(interp, listPtr,
-			    Tcl_NewStringObj(varName, -1));
-		}
-	    }
-	}
+    } else {			/* Get pkgs just in specified interp. */
+	interpName = TclGetString(objv[1]);
     }
+    return TclGetLoadedPackages(interp, interpName);
 }
 
 /*
@@ -1760,41 +1582,34 @@ AppendLocals(interp, listPtr, pattern, includeLinks)
  *
  * InfoNameOfExecutableCmd --
  *
- *      Called to implement the "info nameofexecutable" command that returns
- *      the name of the binary file running this application. Handles the
- *      following syntax:
+ *	Called to implement the "info nameofexecutable" command that returns
+ *	the name of the binary file running this application. Handles the
+ *	following syntax:
  *
- *          info nameofexecutable
+ *	    info nameofexecutable
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoNameOfExecutableCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoNameOfExecutableCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    CONST char *nameOfExecutable;
-
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
-    }
-
-    nameOfExecutable = Tcl_GetNameOfExecutable();
-    
-    if (nameOfExecutable != NULL) {
-	Tcl_SetStringObj(Tcl_GetObjResult(interp), nameOfExecutable, -1);
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
+    Tcl_SetObjResult(interp, TclGetObjNameOfExecutable());
     return TCL_OK;
 }
 
@@ -1803,41 +1618,41 @@ InfoNameOfExecutableCmd(dummy, interp, objc, objv)
  *
  * InfoPatchLevelCmd --
  *
- *      Called to implement the "info patchlevel" command that returns the
- *      default value for an argument to a procedure. Handles the following
- *      syntax:
+ *	Called to implement the "info patchlevel" command that returns the
+ *	default value for an argument to a procedure. Handles the following
+ *	syntax:
  *
- *          info patchlevel
+ *	    info patchlevel
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoPatchLevelCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoPatchLevelCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    CONST char *patchlevel;
+    const char *patchlevel;
 
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
 
     patchlevel = Tcl_GetVar(interp, "tcl_patchLevel",
-            (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG));
+	    (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG));
     if (patchlevel != NULL) {
-        Tcl_SetStringObj(Tcl_GetObjResult(interp), patchlevel, -1);
-        return TCL_OK;
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(patchlevel, -1));
+	return TCL_OK;
     }
     return TCL_ERROR;
 }
@@ -1847,76 +1662,76 @@ InfoPatchLevelCmd(dummy, interp, objc, objv)
  *
  * InfoProcsCmd --
  *
- *	Called to implement the "info procs" command that returns the
- *	list of procedures in the interpreter that match an optional pattern.
- *	The pattern, if any, consists of an optional sequence of namespace
- *	names separated by "::" qualifiers, which is followed by a
- *	glob-style pattern that restricts which commands are returned.
- *	Handles the following syntax:
+ *	Called to implement the "info procs" command that returns the list of
+ *	procedures in the interpreter that match an optional pattern. The
+ *	pattern, if any, consists of an optional sequence of namespace names
+ *	separated by "::" qualifiers, which is followed by a glob-style
+ *	pattern that restricts which commands are returned. Handles the
+ *	following syntax:
  *
- *          info procs ?pattern?
+ *	    info procs ?pattern?
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoProcsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoProcsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *cmdName, *pattern;
-    CONST char *simplePattern;
+    const char *simplePattern;
     Namespace *nsPtr;
 #ifdef INFO_PROCS_SEARCH_GLOBAL_NS
     Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
 #endif
-    Namespace *currNsPtr   = (Namespace *) Tcl_GetCurrentNamespace(interp);
+    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
     Tcl_Obj *listPtr, *elemObjPtr;
-    int specificNsInPattern = 0;  /* Init. to avoid compiler warning. */
+    int specificNsInPattern = 0;/* Init. to avoid compiler warning. */
     register Tcl_HashEntry *entryPtr;
     Tcl_HashSearch search;
     Command *cmdPtr, *realCmdPtr;
 
     /*
-     * Get the pattern and find the "effective namespace" in which to
-     * list procs.
+     * Get the pattern and find the "effective namespace" in which to list
+     * procs.
      */
 
-    if (objc == 2) {
+    if (objc == 1) {
 	simplePattern = NULL;
 	nsPtr = currNsPtr;
 	specificNsInPattern = 0;
-    } else if (objc == 3) {
+    } else if (objc == 2) {
 	/*
 	 * From the pattern, get the effective namespace and the simple
-	 * pattern (no namespace qualifiers or ::'s) at the end. If an
-	 * error was found while parsing the pattern, return it. Otherwise,
-	 * if the namespace wasn't found, just leave nsPtr NULL: we will
-	 * return an empty list since no commands there can be found.
+	 * pattern (no namespace qualifiers or ::'s) at the end. If an error
+	 * was found while parsing the pattern, return it. Otherwise, if the
+	 * namespace wasn't found, just leave nsPtr NULL: we will return an
+	 * empty list since no commands there can be found.
 	 */
 
 	Namespace *dummy1NsPtr, *dummy2NsPtr;
 
-	pattern = Tcl_GetString(objv[2]);
+	pattern = TclGetString(objv[1]);
 	TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL,
 		/*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr,
 		&simplePattern);
 
-	if (nsPtr != NULL) {	/* we successfully found the pattern's ns */
+	if (nsPtr != NULL) {	/* We successfully found the pattern's ns. */
 	    specificNsInPattern = (strcmp(simplePattern, pattern) != 0);
 	}
     } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "?pattern?");
+	return TCL_ERROR;
     }
 
     if (nsPtr == NULL) {
@@ -1924,13 +1739,13 @@ InfoProcsCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Scan through the effective namespace's command table and create a
-     * list with all procs that match the pattern. If a specific
-     * namespace was requested in the pattern, qualify the command names
-     * with the namespace name.
+     * Scan through the effective namespace's command table and create a list
+     * with all procs that match the pattern. If a specific namespace was
+     * requested in the pattern, qualify the command names with the namespace
+     * name.
      */
 
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
+    listPtr = Tcl_NewListObj(0, NULL);
 #ifndef INFO_PROCS_SEARCH_GLOBAL_NS
     if (simplePattern != NULL && TclMatchIsTrivial(simplePattern)) {
 	entryPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern);
@@ -1944,7 +1759,7 @@ InfoProcsCmd(dummy, interp, objc, objv)
 		    goto simpleProcOK;
 		}
 	    } else {
-	      simpleProcOK:
+	    simpleProcOK:
 		if (specificNsInPattern) {
 		    elemObjPtr = Tcl_NewObj();
 		    Tcl_GetCommandFullName(interp, (Tcl_Command) cmdPtr,
@@ -1962,7 +1777,7 @@ InfoProcsCmd(dummy, interp, objc, objv)
 	while (entryPtr != NULL) {
 	    cmdName = Tcl_GetHashKey(&nsPtr->cmdTable, entryPtr);
 	    if ((simplePattern == NULL)
-	            || Tcl_StringMatch(cmdName, simplePattern)) {
+		    || Tcl_StringMatch(cmdName, simplePattern)) {
 		cmdPtr = (Command *) Tcl_GetHashValue(entryPtr);
 
 		if (!TclIsProc(cmdPtr)) {
@@ -1972,7 +1787,7 @@ InfoProcsCmd(dummy, interp, objc, objv)
 			goto procOK;
 		    }
 		} else {
-		  procOK:
+		procOK:
 		    if (specificNsInPattern) {
 			elemObjPtr = Tcl_NewObj();
 			Tcl_GetCommandFullName(interp, (Tcl_Command) cmdPtr,
@@ -1988,35 +1803,36 @@ InfoProcsCmd(dummy, interp, objc, objv)
 
 	/*
 	 * If the effective namespace isn't the global :: namespace, and a
-	 * specific namespace wasn't requested in the pattern, then add in
-	 * all global :: procs that match the simple pattern. Of course,
-	 * we add in only those procs that aren't hidden by a proc in
-	 * the effective namespace.
+	 * specific namespace wasn't requested in the pattern, then add in all
+	 * global :: procs that match the simple pattern. Of course, we add in
+	 * only those procs that aren't hidden by a proc in the effective
+	 * namespace.
 	 */
 
 #ifdef INFO_PROCS_SEARCH_GLOBAL_NS
 	/*
-	 * If "info procs" worked like "info commands", returning the
-	 * commands also seen in the global namespace, then you would
-	 * include this code.  As this could break backwards compatibilty
-	 * with 8.0-8.2, we decided not to "fix" it in 8.3, leaving the
-	 * behavior slightly different.
+	 * If "info procs" worked like "info commands", returning the commands
+	 * also seen in the global namespace, then you would include this
+	 * code. As this could break backwards compatibilty with 8.0-8.2, we
+	 * decided not to "fix" it in 8.3, leaving the behavior slightly
+	 * different.
 	 */
+
 	if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
 	    entryPtr = Tcl_FirstHashEntry(&globalNsPtr->cmdTable, &search);
 	    while (entryPtr != NULL) {
 		cmdName = Tcl_GetHashKey(&globalNsPtr->cmdTable, entryPtr);
 		if ((simplePattern == NULL)
-	                || Tcl_StringMatch(cmdName, simplePattern)) {
-		    if (Tcl_FindHashEntry(&nsPtr->cmdTable, cmdName) == NULL) {
+			|| Tcl_StringMatch(cmdName, simplePattern)) {
+		    if (Tcl_FindHashEntry(&nsPtr->cmdTable,cmdName) == NULL) {
 			cmdPtr = (Command *) Tcl_GetHashValue(entryPtr);
 			realCmdPtr = (Command *) TclGetOriginalCommand(
-			        (Tcl_Command) cmdPtr);
+				(Tcl_Command) cmdPtr);
 
 			if (TclIsProc(cmdPtr) || ((realCmdPtr != NULL)
 				&& TclIsProc(realCmdPtr))) {
 			    Tcl_ListObjAppendElement(interp, listPtr,
-			            Tcl_NewStringObj(cmdName, -1));
+				    Tcl_NewStringObj(cmdName, -1));
 			}
 		    }
 		}
@@ -2035,47 +1851,46 @@ InfoProcsCmd(dummy, interp, objc, objv)
  *
  * InfoScriptCmd --
  *
- *      Called to implement the "info script" command that returns the
- *      script file that is currently being evaluated. Handles the
- *      following syntax:
+ *	Called to implement the "info script" command that returns the script
+ *	file that is currently being evaluated. Handles the following syntax:
  *
- *          info script ?newName?
+ *	    info script ?newName?
  *
  *	If newName is specified, it will set that as the internal name.
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.  It may change the
- *	internal script filename.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message. It may change the internal
+ *	script filename.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoScriptCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoScriptCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
-    if ((objc != 2) && (objc != 3)) {
-        Tcl_WrongNumArgs(interp, 2, objv, "?filename?");
-        return TCL_ERROR;
+    if ((objc != 1) && (objc != 2)) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?filename?");
+	return TCL_ERROR;
     }
 
-    if (objc == 3) {
+    if (objc == 2) {
 	if (iPtr->scriptFile != NULL) {
 	    Tcl_DecrRefCount(iPtr->scriptFile);
 	}
-	iPtr->scriptFile = objv[2];
+	iPtr->scriptFile = objv[1];
 	Tcl_IncrRefCount(iPtr->scriptFile);
     }
     if (iPtr->scriptFile != NULL) {
-        Tcl_SetObjResult(interp, iPtr->scriptFile);
+	Tcl_SetObjResult(interp, iPtr->scriptFile);
     }
     return TCL_OK;
 }
@@ -2085,36 +1900,36 @@ InfoScriptCmd(dummy, interp, objc, objv)
  *
  * InfoSharedlibCmd --
  *
- *      Called to implement the "info sharedlibextension" command that
- *      returns the file extension used for shared libraries. Handles the
- *      following syntax:
+ *	Called to implement the "info sharedlibextension" command that returns
+ *	the file extension used for shared libraries. Handles the following
+ *	syntax:
  *
- *          info sharedlibextension
+ *	    info sharedlibextension
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoSharedlibCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoSharedlibCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
-    
+
 #ifdef TCL_SHLIB_EXT
-    Tcl_SetStringObj(Tcl_GetObjResult(interp), TCL_SHLIB_EXT, -1);
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(TCL_SHLIB_EXT, -1));
 #endif
     return TCL_OK;
 }
@@ -2124,40 +1939,40 @@ InfoSharedlibCmd(dummy, interp, objc, objv)
  *
  * InfoTclVersionCmd --
  *
- *      Called to implement the "info tclversion" command that returns the
- *      version number for this Tcl library. Handles the following syntax:
+ *	Called to implement the "info tclversion" command that returns the
+ *	version number for this Tcl library. Handles the following syntax:
  *
- *          info tclversion
+ *	    info tclversion
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InfoTclVersionCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+InfoTclVersionCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    CONST char *version;
+    Tcl_Obj *version;
 
-    if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+    if (objc != 1) {
+	Tcl_WrongNumArgs(interp, 1, objv, NULL);
+	return TCL_ERROR;
     }
 
-    version = Tcl_GetVar(interp, "tcl_version",
-        (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG));
+    version = Tcl_GetVar2Ex(interp, "tcl_version", NULL,
+	    (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG));
     if (version != NULL) {
-        Tcl_SetStringObj(Tcl_GetObjResult(interp), version, -1);
-        return TCL_OK;
+	Tcl_SetObjResult(interp, version);
+	return TCL_OK;
     }
     return TCL_ERROR;
 }
@@ -2165,204 +1980,67 @@ InfoTclVersionCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
- * InfoVarsCmd --
- *
- *	Called to implement the "info vars" command that returns the
- *	list of variables in the interpreter that match an optional pattern.
- *	The pattern, if any, consists of an optional sequence of namespace
- *	names separated by "::" qualifiers, which is followed by a
- *	glob-style pattern that restricts which variables are returned.
- *	Handles the following syntax:
+ * Tcl_JoinObjCmd --
  *
- *          info vars ?pattern?
+ *	This procedure is invoked to process the "join" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
- *      Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *	A standard Tcl object result.
  *
  * Side effects:
- *      Returns a result in the interpreter's result object. If there is
- *	an error, the result is an error message.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-static int
-InfoVarsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+int
+Tcl_JoinObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    char *varName, *pattern;
-    CONST char *simplePattern;
-    register Tcl_HashEntry *entryPtr;
-    Tcl_HashSearch search;
-    Var *varPtr;
-    Namespace *nsPtr;
-    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
-    Namespace *currNsPtr   = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    Tcl_Obj *listPtr, *elemObjPtr;
-    int specificNsInPattern = 0;  /* Init. to avoid compiler warning. */
-
-    /*
-     * Get the pattern and find the "effective namespace" in which to
-     * list variables. We only use this effective namespace if there's
-     * no active Tcl procedure frame.
-     */
-
-    if (objc == 2) {
-        simplePattern = NULL;
-	nsPtr = currNsPtr;
-	specificNsInPattern = 0;
-    } else if (objc == 3) {
-	/*
-	 * From the pattern, get the effective namespace and the simple
-	 * pattern (no namespace qualifiers or ::'s) at the end. If an
-	 * error was found while parsing the pattern, return it. Otherwise,
-	 * if the namespace wasn't found, just leave nsPtr NULL: we will
-	 * return an empty list since no variables there can be found.
-	 */
+    int listLen, i;
+    Tcl_Obj *resObjPtr, *joinObjPtr, **elemPtrs;
 
-	Namespace *dummy1NsPtr, *dummy2NsPtr;
-
-        pattern = Tcl_GetString(objv[2]);
-	TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL,
-		/*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr,
-		&simplePattern);
-
-	if (nsPtr != NULL) {	/* we successfully found the pattern's ns */
-	    specificNsInPattern = (strcmp(simplePattern, pattern) != 0);
-	}
-    } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
-        return TCL_ERROR;
+    if ((objc < 2) || (objc > 3)) {
+	Tcl_WrongNumArgs(interp, 1, objv, "list ?joinString?");
+	return TCL_ERROR;
     }
 
     /*
-     * If the namespace specified in the pattern wasn't found, just return.
+     * Make sure the list argument is a list object and get its length and a
+     * pointer to its array of element pointers.
      */
 
-    if (nsPtr == NULL) {
-	return TCL_OK;
+    if (TclListObjGetElements(interp, objv[1], &listLen,
+	    &elemPtrs) != TCL_OK) {
+	return TCL_ERROR;
     }
-    
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-    
-    if ((iPtr->varFramePtr == NULL)
-	    || !iPtr->varFramePtr->isProcCallFrame
-	    || specificNsInPattern) {
-	/*
-	 * There is no frame pointer, the frame pointer was pushed only
-	 * to activate a namespace, or we are in a procedure call frame
-	 * but a specific namespace was specified. Create a list containing
-	 * only the variables in the effective namespace's variable table.
-	 */
-	
-	if (simplePattern != NULL && TclMatchIsTrivial(simplePattern)) {
-	    /*
-	     * If we can just do hash lookups, that simplifies things
-	     * a lot.
-	     */
 
-	    entryPtr = Tcl_FindHashEntry(&nsPtr->varTable, simplePattern);
-	    if (entryPtr != NULL) {
-		varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-		if (!TclIsVarUndefined(varPtr)
-			|| (varPtr->flags & VAR_NAMESPACE_VAR)) {
-		    if (specificNsInPattern) {
-			elemObjPtr = Tcl_NewObj();
-			Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr,
-				    elemObjPtr);
-		    } else {
-			elemObjPtr = Tcl_NewStringObj(simplePattern, -1);
-		    }
-		    Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
-		}
-	    } else if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
-		entryPtr = Tcl_FindHashEntry(&globalNsPtr->varTable,
-			simplePattern);
-		if (entryPtr != NULL) {
-		    varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-		    if (!TclIsVarUndefined(varPtr)
-			    || (varPtr->flags & VAR_NAMESPACE_VAR)) {
-			Tcl_ListObjAppendElement(interp, listPtr,
-				Tcl_NewStringObj(simplePattern, -1));
-		    }
-		}
-	    }
-	} else {
-	    /*
-	     * Have to scan the tables of variables.
-	     */
+    joinObjPtr = (objc == 2) ? Tcl_NewStringObj(" ", 1) : objv[2];
+    Tcl_IncrRefCount(joinObjPtr);
 
-	    entryPtr = Tcl_FirstHashEntry(&nsPtr->varTable, &search);
-	    while (entryPtr != NULL) {
-		varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-		if (!TclIsVarUndefined(varPtr)
-			|| (varPtr->flags & VAR_NAMESPACE_VAR)) {
-		    varName = Tcl_GetHashKey(&nsPtr->varTable, entryPtr);
-		    if ((simplePattern == NULL)
-			    || Tcl_StringMatch(varName, simplePattern)) {
-			if (specificNsInPattern) {
-			    elemObjPtr = Tcl_NewObj();
-			    Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr,
-				    elemObjPtr);
-			} else {
-			    elemObjPtr = Tcl_NewStringObj(varName, -1);
-			}
-			Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
-		    }
-		}
-		entryPtr = Tcl_NextHashEntry(&search);
-	    }
-
-	    /*
-	     * If the effective namespace isn't the global ::
-	     * namespace, and a specific namespace wasn't requested in
-	     * the pattern (i.e., the pattern only specifies variable
-	     * names), then add in all global :: variables that match
-	     * the simple pattern. Of course, add in only those
-	     * variables that aren't hidden by a variable in the
-	     * effective namespace.
-	     */
-
-	    if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
-		entryPtr = Tcl_FirstHashEntry(&globalNsPtr->varTable, &search);
-		while (entryPtr != NULL) {
-		    varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-		    if (!TclIsVarUndefined(varPtr)
-			    || (varPtr->flags & VAR_NAMESPACE_VAR)) {
-			varName = Tcl_GetHashKey(&globalNsPtr->varTable,
-				entryPtr);
-			if ((simplePattern == NULL)
-				|| Tcl_StringMatch(varName, simplePattern)) {
-			    if (Tcl_FindHashEntry(&nsPtr->varTable,
-				    varName) == NULL) {
-				Tcl_ListObjAppendElement(interp, listPtr,
-					Tcl_NewStringObj(varName, -1));
-			    }
-			}
-		    }
-		    entryPtr = Tcl_NextHashEntry(&search);
-		}
-	    }
+    resObjPtr = Tcl_NewObj();
+    for (i = 0;  i < listLen;  i++) {
+	if (i > 0) {
+	    Tcl_AppendObjToObj(resObjPtr, joinObjPtr);
 	}
-    } else if (((Interp *)interp)->varFramePtr->procPtr != NULL) {
-	AppendLocals(interp, listPtr, simplePattern, 1);
+	Tcl_AppendObjToObj(resObjPtr, elemPtrs[i]);
     }
-    
-    Tcl_SetObjResult(interp, listPtr);
+    Tcl_DecrRefCount(joinObjPtr);
+    Tcl_SetObjResult(interp, resObjPtr);
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_JoinObjCmd --
+ * Tcl_LassignObjCmd --
  *
- *	This procedure is invoked to process the "join" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This object-based procedure is invoked to process the "lassign" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -2373,54 +2051,59 @@ InfoVarsCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_JoinObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+Tcl_LassignObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    char *joinString, *bytes;
-    int joinLength, listLen, length, i, result;
-    Tcl_Obj **elemPtrs;
-    Tcl_Obj *resObjPtr;
+    Tcl_Obj *listCopyPtr;
+    Tcl_Obj **listObjv;		/* The contents of the list. */
+    int listObjc;		/* The length of the list. */
+    int code = TCL_OK;
 
-    if (objc == 2) {
-	joinString = " ";
-	joinLength = 1;
-    } else if (objc == 3) {
-	joinString = Tcl_GetStringFromObj(objv[2], &joinLength);
-    } else {
-	Tcl_WrongNumArgs(interp, 1, objv, "list ?joinString?");
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "list varName ?varName ...?");
 	return TCL_ERROR;
     }
 
-    /*
-     * Make sure the list argument is a list object and get its length and
-     * a pointer to its array of element pointers.
-     */
-
-    result = Tcl_ListObjGetElements(interp, objv[1], &listLen, &elemPtrs);
-    if (result != TCL_OK) {
-	return result;
+    listCopyPtr = TclListObjCopy(interp, objv[1]);
+    if (listCopyPtr == NULL) {
+	return TCL_ERROR;
     }
 
-    /*
-     * Now concatenate strings to form the "joined" result. We append
-     * directly into the interpreter's result object.
-     */
+    TclListObjGetElements(NULL, listCopyPtr, &listObjc, &listObjv);
 
-    resObjPtr = Tcl_GetObjResult(interp);
+    objc -= 2;
+    objv += 2;
+    while (code == TCL_OK && objc > 0 && listObjc > 0) {
+	if (NULL == Tcl_ObjSetVar2(interp, *objv++, NULL,
+		*listObjv++, TCL_LEAVE_ERR_MSG)) {
+	    code = TCL_ERROR;
+	}
+	objc--; listObjc--;
+    }
 
-    for (i = 0;  i < listLen;  i++) {
-	bytes = Tcl_GetStringFromObj(elemPtrs[i], &length);
-	if (i > 0) {
-	    Tcl_AppendToObj(resObjPtr, joinString, joinLength);
+    if (code == TCL_OK && objc > 0) {
+	Tcl_Obj *emptyObj;
+	TclNewObj(emptyObj);
+	Tcl_IncrRefCount(emptyObj);
+	while (code == TCL_OK && objc-- > 0) {
+	    if (NULL == Tcl_ObjSetVar2(interp, *objv++, NULL,
+		    emptyObj, TCL_LEAVE_ERR_MSG)) {
+		code = TCL_ERROR;
+	    }
 	}
-	Tcl_AppendToObj(resObjPtr, bytes, length);
+	Tcl_DecrRefCount(emptyObj);
     }
-    return TCL_OK;
+
+    if (code == TCL_OK && listObjc > 0) {
+	Tcl_SetObjResult(interp, Tcl_NewListObj(listObjc, listObjv));
+    }
+
+    Tcl_DecrRefCount(listCopyPtr);
+    return code;
 }
 
 /*
@@ -2440,16 +2123,15 @@ Tcl_JoinObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-    /* ARGSUSED */
 int
-Tcl_LindexObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LindexObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
 
-    Tcl_Obj *elemPtr;		/* Pointer to the element being extracted */
+    Tcl_Obj *elemPtr;		/* Pointer to the element being extracted. */
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "list ?index...?");
@@ -2457,31 +2139,27 @@ Tcl_LindexObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * If objc == 3, then objv[ 2 ] may be either a single index or
-     * a list of indices: go to TclLindexList to determine which.
-     * If objc >= 4, or objc == 2, then objv[ 2 .. objc-2 ] are all
-     * single indices and processed as such in TclLindexFlat.
+     * If objc==3, then objv[2] may be either a single index or a list of
+     * indices: go to TclLindexList to determine which. If objc>=4, or
+     * objc==2, then objv[2 .. objc-2] are all single indices and processed as
+     * such in TclLindexFlat.
      */
 
-    if ( objc == 3 ) {
-
-	elemPtr = TclLindexList( interp, objv[ 1 ], objv[ 2 ] );
-
+    if (objc == 3) {
+	elemPtr = TclLindexList(interp, objv[1], objv[2]);
     } else {
-
-	elemPtr = TclLindexFlat( interp, objv[ 1 ], objc-2, objv+2 );
-
+	elemPtr = TclLindexFlat(interp, objv[1], objc-2, objv+2);
     }
-	
+
     /*
-     * Set the interpreter's object result to the last element extracted
+     * Set the interpreter's object result to the last element extracted.
      */
 
-    if ( elemPtr == NULL ) {
+    if (elemPtr == NULL) {
 	return TCL_ERROR;
     } else {
 	Tcl_SetObjResult(interp, elemPtr);
-	Tcl_DecrRefCount( elemPtr );
+	Tcl_DecrRefCount(elemPtr);
 	return TCL_OK;
     }
 }
@@ -2489,306 +2167,14 @@ Tcl_LindexObjCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
- * TclLindexList --
- *
- *	This procedure handles the 'lindex' command when objc==3.
- *
- * Results:
- *	Returns a pointer to the object extracted, or NULL if an
- *	error occurred.
- *
- * Side effects:
- *	None.
- *
- * If objv[1] can be parsed as a list, TclLindexList handles extraction
- * of the desired element locally.  Otherwise, it invokes
- * TclLindexFlat to treat objv[1] as a scalar.
- *
- * The reference count of the returned object includes one reference
- * corresponding to the pointer returned.  Thus, the calling code will
- * usually do something like:
- *	Tcl_SetObjResult( interp, result );
- *	Tcl_DecrRefCount( result );
- *
- *----------------------------------------------------------------------
- */
-
-Tcl_Obj *
-TclLindexList( interp, listPtr, argPtr )
-    Tcl_Interp* interp;		/* Tcl interpreter */
-    Tcl_Obj* listPtr;		/* List being unpacked */
-    Tcl_Obj* argPtr;		/* Index or index list */
-{
-
-    Tcl_Obj **elemPtrs;		/* Elements of the list being manipulated. */
-    int listLen;		/* Length of the list being manipulated. */
-    int index;			/* Index into the list */
-    int result;			/* Result returned from a Tcl library call */
-    int i;			/* Current index number */
-    Tcl_Obj** indices;		/* Array of list indices */
-    int indexCount;		/* Size of the array of list indices */
-    Tcl_Obj* oldListPtr;	/* Temp location to preserve the list
-				 * pointer when replacing it with a sublist */
-
-    /*
-     * Determine whether argPtr designates a list or a single index.
-     * We have to be careful about the order of the checks to avoid
-     * repeated shimmering; see TIP#22 and TIP#33 for the details.
-     */
-
-    if ( argPtr->typePtr != &tclListType 
-	 && TclGetIntForIndex( NULL , argPtr, 0, &index ) == TCL_OK ) {
-
-	/*
-	 * argPtr designates a single index.
-	 */
-
-	return TclLindexFlat( interp, listPtr, 1, &argPtr );
-
-    } else if ( Tcl_ListObjGetElements( NULL, argPtr, &indexCount, &indices )
-		!= TCL_OK ) {
-
-	/*
-	 * argPtr designates something that is neither an index nor a
-	 * well-formed list.  Report the error via TclLindexFlat.
-	 */
-	
-	return TclLindexFlat( interp, listPtr, 1, &argPtr );
-    }
-
-    /*
-     * Record the reference to the list that we are maintaining in
-     * the activation record.
-     */
-
-    Tcl_IncrRefCount( listPtr );
-
-    /*
-     * argPtr designates a list, and the 'else if' above has parsed it
-     * into indexCount and indices.
-     */
-
-    for ( i = 0; i < indexCount; ++i ) {
-
-	/*
-	 * Convert the current listPtr to a list if necessary.
-	 */
-	    
-	result = Tcl_ListObjGetElements( interp, listPtr,
-					 &listLen, &elemPtrs);
-	if (result != TCL_OK) {
-	    Tcl_DecrRefCount( listPtr );
-	    return NULL;
-	}
-	    
-	/*
-	 * Get the index from indices[ i ]
-	 */
-	
-	result = TclGetIntForIndex( interp, indices[ i ],
-				    /*endValue*/ (listLen - 1),
-				    &index );
-	if ( result != TCL_OK ) {
-	    /*
-	     * Index could not be parsed
-	     */
-
-	    Tcl_DecrRefCount( listPtr );
-	    return NULL;
-
-	} else if ( index < 0
-		    || index >= listLen ) {
-	    /*
-	     * Index is out of range
-	     */
-	    Tcl_DecrRefCount( listPtr );
-	    listPtr = Tcl_NewObj();
-	    Tcl_IncrRefCount( listPtr );
-	    return listPtr;
-	}
-	
-	/*
-	 * Make sure listPtr still refers to a list object.
-	 * If it shared a Tcl_Obj structure with the arguments, then
-	 * it might have just been converted to something else.
-	 */
-	
-	if (listPtr->typePtr != &tclListType) {
-	    result = Tcl_ListObjGetElements(interp, listPtr, &listLen,
-					    &elemPtrs);
-	    if (result != TCL_OK) {
-		Tcl_DecrRefCount( listPtr );
-		return NULL;
-	    }
-	}
-	
-	/*
-	 * Extract the pointer to the appropriate element
-	 */
-	
-	oldListPtr = listPtr;
-	listPtr = elemPtrs[ index ];
-	Tcl_IncrRefCount( listPtr );
-	Tcl_DecrRefCount( oldListPtr );
-	
-	/*
-	 * The work we did above may have caused the internal rep
-	 * of *argPtr to change to something else.  Get it back.
-	 */
-	
-	result = Tcl_ListObjGetElements( interp, argPtr,
-					 &indexCount, &indices );
-	if ( result != TCL_OK ) {
-	    /* 
-	     * This can't happen unless some extension corrupted a Tcl_Obj.
-	     */
-	    Tcl_DecrRefCount( listPtr );
-	    return NULL;
-	}
-	
-    } /* end for */
-
-    /*
-     * Return the last object extracted.  Its reference count will include
-     * the reference being returned.
-     */
-
-    return listPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclLindexFlat --
- *
- *	This procedure handles the 'lindex' command, given that the
- *	arguments to the command are known to be a flat list.
- *
- * Results:
- *	Returns a standard Tcl result.
- *
- * Side effects:
- *	None.
- *
- * This procedure is called from either tclExecute.c or
- * Tcl_LindexObjCmd whenever either is presented with
- * objc == 2 or objc >= 4.  It is also called from TclLindexList
- * for the objc==3 case once it is determined that objv[2] cannot
- * be parsed as a list.
- *
- *----------------------------------------------------------------------
- */
-
-Tcl_Obj *
-TclLindexFlat( interp, listPtr, indexCount, indexArray )
-    Tcl_Interp* interp;		/* Tcl interpreter */
-    Tcl_Obj* listPtr;		/* Tcl object representing the list */
-    int indexCount;		/* Count of indices */
-    Tcl_Obj* CONST indexArray[];
-				/* Array of pointers to Tcl objects
-				 * representing the indices in the
-				 * list */
-{
-
-    int i;			/* Current list index */
-    int result;			/* Result of Tcl library calls */
-    int listLen;		/* Length of the current list being 
-				 * processed */
-    Tcl_Obj** elemPtrs;		/* Array of pointers to the elements
-				 * of the current list */
-    int index;			/* Parsed version of the current element
-				 * of indexArray  */
-    Tcl_Obj* oldListPtr;	/* Temporary to hold listPtr so that
-				 * its ref count can be decremented. */
-
-    /*
-     * Record the reference to the 'listPtr' object that we are
-     * maintaining in the C activation record.
-     */
-
-    Tcl_IncrRefCount( listPtr );
-
-    for ( i = 0; i < indexCount; ++i ) {
-
-	/*
-	 * Convert the current listPtr to a list if necessary.
-	 */
-	
-	result = Tcl_ListObjGetElements(interp, listPtr,
-					&listLen, &elemPtrs);
-	if (result != TCL_OK) {
-	    Tcl_DecrRefCount( listPtr );
-	    return NULL;
-	}
-	
-	/*
-	 * Get the index from objv[i]
-	 */
-	
-	result = TclGetIntForIndex( interp, indexArray[ i ],
-				    /*endValue*/ (listLen - 1),
-				    &index );
-	if ( result != TCL_OK ) {
-
-	    /* Index could not be parsed */
-
-	    Tcl_DecrRefCount( listPtr );
-	    return NULL;
-
-	} else if ( index < 0
-		    || index >= listLen ) {
-	    
-	    /*
-	     * Index is out of range
-	     */
-		
-	    Tcl_DecrRefCount( listPtr );
-	    listPtr = Tcl_NewObj();
-	    Tcl_IncrRefCount( listPtr );
-	    return listPtr;
-	}
-	    
-	/*
-	 * Make sure listPtr still refers to a list object.
-	 * It might have been converted to something else above
-	 * if objv[1] overlaps with one of the other parameters.
-	 */
-	
-	if (listPtr->typePtr != &tclListType) {
-	    result = Tcl_ListObjGetElements(interp, listPtr, &listLen,
-					    &elemPtrs);
-	    if (result != TCL_OK) {
-		Tcl_DecrRefCount( listPtr );
-		return NULL;
-	    }
-	}
-	
-	/*
-	 * Extract the pointer to the appropriate element
-	 */
-	
-	oldListPtr = listPtr;
-	listPtr = elemPtrs[ index ];
-	Tcl_IncrRefCount( listPtr );
-	Tcl_DecrRefCount( oldListPtr );
-	
-    }
-
-    return listPtr;
-
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * Tcl_LinsertObjCmd --
  *
  *	This object-based procedure is invoked to process the "linsert" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
- *	A new Tcl list object formed by inserting zero or more elements 
- *	into a list.
+ *	A new Tcl list object formed by inserting zero or more elements into a
+ *	list.
  *
  * Side effects:
  *	See the user documentation.
@@ -2796,34 +2182,33 @@ TclLindexFlat( interp, listPtr, indexCount, indexArray )
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_LinsertObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    register int objc;		/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LinsertObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    register int objc,		/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Obj *listPtr;
-    int index, isDuplicate, len, result;
+    int index, len, result;
 
     if (objc < 4) {
 	Tcl_WrongNumArgs(interp, 1, objv, "list index element ?element ...?");
 	return TCL_ERROR;
     }
 
-    result = Tcl_ListObjLength(interp, objv[1], &len);
+    result = TclListObjLength(interp, objv[1], &len);
     if (result != TCL_OK) {
 	return result;
     }
 
     /*
-     * Get the index.  "end" is interpreted to be the index after the last
+     * Get the index. "end" is interpreted to be the index after the last
      * element, such that using it will cause any inserted elements to be
      * appended to the list.
      */
 
-    result = TclGetIntForIndex(interp, objv[2], /*end*/ len, &index);
+    result = TclGetIntForIndexM(interp, objv[2], /*end*/ len, &index);
     if (result != TCL_OK) {
 	return result;
     }
@@ -2832,33 +2217,25 @@ Tcl_LinsertObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * If the list object is unshared we can modify it directly. Otherwise
-     * we create a copy to modify: this is "copy on write".
+     * If the list object is unshared we can modify it directly. Otherwise we
+     * create a copy to modify: this is "copy on write".
      */
 
     listPtr = objv[1];
-    isDuplicate = 0;
     if (Tcl_IsShared(listPtr)) {
-	listPtr = Tcl_DuplicateObj(listPtr);
-	isDuplicate = 1;
+	listPtr = TclListObjCopy(NULL, listPtr);
     }
 
     if ((objc == 4) && (index == len)) {
 	/*
 	 * Special case: insert one element at the end of the list.
 	 */
-	result = Tcl_ListObjAppendElement(interp, listPtr, objv[3]);
-    } else if (objc > 3) {
-	result = Tcl_ListObjReplace(interp, listPtr, index, 0,
-				    (objc-3), &(objv[3]));
-    }
-    if (result != TCL_OK) {
-	if (isDuplicate) {
-	    Tcl_DecrRefCount(listPtr); /* free unneeded obj */
-	}
-	return result;
+
+	Tcl_ListObjAppendElement(NULL, listPtr, objv[3]);
+    } else {
+	Tcl_ListObjReplace(NULL, listPtr, index, 0, (objc-3), &(objv[3]));
     }
-    
+
     /*
      * Set the interpreter's object result.
      */
@@ -2872,8 +2249,8 @@ Tcl_LinsertObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_ListObjCmd --
  *
- *	This procedure is invoked to process the "list" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "list" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -2884,21 +2261,21 @@ Tcl_LinsertObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_ListObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    register int objc;			/* Number of arguments. */
-    register Tcl_Obj *CONST objv[];	/* The argument objects. */
+Tcl_ListObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    register int objc,		/* Number of arguments. */
+    register Tcl_Obj *const objv[])
+				/* The argument objects. */
 {
     /*
      * If there are no list elements, the result is an empty object.
-     * Otherwise modify the interpreter's result object to be a list object.
+     * Otherwise set the interpreter's result object to be a list object.
      */
-    
+
     if (objc > 1) {
-	Tcl_SetListObj(Tcl_GetObjResult(interp), (objc-1), &(objv[1]));
+	Tcl_SetObjResult(interp, Tcl_NewListObj((objc-1), &(objv[1])));
     }
     return TCL_OK;
 }
@@ -2909,7 +2286,7 @@ Tcl_ListObjCmd(dummy, interp, objc, objv)
  * Tcl_LlengthObjCmd --
  *
  *	This object-based procedure is invoked to process the "llength" Tcl
- *	command.  See the user documentation for details on what it does.
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -2920,13 +2297,13 @@ Tcl_ListObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_LlengthObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    register Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LlengthObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    register Tcl_Obj *const objv[])
+				/* Argument objects. */
 {
     int listLen, result;
 
@@ -2935,17 +2312,17 @@ Tcl_LlengthObjCmd(dummy, interp, objc, objv)
 	return TCL_ERROR;
     }
 
-    result = Tcl_ListObjLength(interp, objv[1], &listLen);
+    result = TclListObjLength(interp, objv[1], &listLen);
     if (result != TCL_OK) {
 	return result;
     }
 
     /*
      * Set the interpreter's object result to an integer object holding the
-     * length. 
+     * length.
      */
 
-    Tcl_SetIntObj(Tcl_GetObjResult(interp), listLen);
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(listLen));
     return TCL_OK;
 }
 
@@ -2954,8 +2331,8 @@ Tcl_LlengthObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_LrangeObjCmd --
  *
- *	This procedure is invoked to process the "lrange" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "lrange" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -2966,17 +2343,16 @@ Tcl_LlengthObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_LrangeObjCmd(notUsed, interp, objc, objv)
-    ClientData notUsed;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    register Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LrangeObjCmd(
+    ClientData notUsed,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    register Tcl_Obj *const objv[])
+				/* Argument objects. */
 {
-    Tcl_Obj *listPtr;
-    Tcl_Obj **elemPtrs;
-    int listLen, first, last, numElems, result;
+    Tcl_Obj *listPtr, **elemPtrs;
+    int listLen, first, result;
 
     if (objc != 4) {
 	Tcl_WrongNumArgs(interp, 1, objv, "list first last");
@@ -2984,62 +2360,143 @@ Tcl_LrangeObjCmd(notUsed, interp, objc, objv)
     }
 
     /*
-     * Make sure the list argument is a list object and get its length and
-     * a pointer to its array of element pointers.
+     * Make sure the list argument is a list object and get its length and a
+     * pointer to its array of element pointers.
      */
 
-    listPtr = objv[1];
-    result = Tcl_ListObjGetElements(interp, listPtr, &listLen, &elemPtrs);
-    if (result != TCL_OK) {
-	return result;
+    listPtr = TclListObjCopy(interp, objv[1]);
+    if (listPtr == NULL) {
+	return TCL_ERROR;
     }
+    TclListObjGetElements(NULL, listPtr, &listLen, &elemPtrs);
 
-    /*
-     * Get the first and last indexes.
-     */
-
-    result = TclGetIntForIndex(interp, objv[2], /*endValue*/ (listLen - 1),
+    result = TclGetIntForIndexM(interp, objv[2], /*endValue*/ listLen - 1,
 	    &first);
-    if (result != TCL_OK) {
-	return result;
-    }
-    if (first < 0) {
-	first = 0;
+    if (result == TCL_OK) {
+	int last;
+
+	if (first < 0) {
+	    first = 0;
+	}
+
+	result = TclGetIntForIndexM(interp, objv[3], /*endValue*/ listLen - 1,
+		&last);
+	if (result == TCL_OK) {
+	    if (last >= listLen) {
+		last = (listLen - 1);
+	    }
+
+	    if (first <= last) {
+		int numElems = (last - first + 1);
+
+		Tcl_SetObjResult(interp,
+			Tcl_NewListObj(numElems, &(elemPtrs[first])));
+	    }
+	}
     }
 
-    result = TclGetIntForIndex(interp, objv[3], /*endValue*/ (listLen - 1),
-	    &last);
-    if (result != TCL_OK) {
-	return result;
+    Tcl_DecrRefCount(listPtr);
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LrepeatObjCmd --
+ *
+ *	This procedure is invoked to process the "lrepeat" Tcl command. See
+ *	the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl object result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LrepeatObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    register int objc,		/* Number of arguments. */
+    register Tcl_Obj *const objv[])
+				/* The argument objects. */
+{
+    int elementCount, i, totalElems;
+    Tcl_Obj *listPtr, **dataArray;
+    List *listRepPtr;
+
+    /*
+     * Check arguments for legality:
+     *		lrepeat posInt value ?value ...?
+     */
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "positiveCount value ?value ...?");
+	return TCL_ERROR;
     }
-    if (last >= listLen) {
-	last = (listLen - 1);
+    if (TCL_ERROR == TclGetIntFromObj(interp, objv[1], &elementCount)) {
+	return TCL_ERROR;
     }
-    
-    if (first > last) {
-	return TCL_OK;		/* the result is an empty object */
+    if (elementCount < 1) {
+	Tcl_AppendResult(interp, "must have a count of at least 1", NULL);
+	return TCL_ERROR;
     }
 
     /*
-     * Make sure listPtr still refers to a list object. It might have been
-     * converted to an int above if the argument objects were shared.
-     */  
+     * Skip forward to the interesting arguments now we've finished parsing.
+     */
+
+    objc -= 2;
+    objv += 2;
 
-    if (listPtr->typePtr != &tclListType) {
-        result = Tcl_ListObjGetElements(interp, listPtr, &listLen,
-                &elemPtrs);
-        if (result != TCL_OK) {
-            return result;
-        }
+    /* Final sanity check. Do not exceed limits on max list length. */
+
+    if (objc > LIST_MAX/elementCount) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"max length of a Tcl list (%d elements) exceeded", LIST_MAX));
+	return TCL_ERROR;
     }
+    totalElems = objc * elementCount;
 
     /*
-     * Extract a range of fields. We modify the interpreter's result object
-     * to be a list object containing the specified elements.
+     * Get an empty list object that is allocated large enough to hold each
+     * init value elementCount times.
      */
 
-    numElems = (last - first + 1);
-    Tcl_SetListObj(Tcl_GetObjResult(interp), numElems, &(elemPtrs[first]));
+    listPtr = Tcl_NewListObj(totalElems, NULL);
+    listRepPtr = ListRepPtr(listPtr);
+    listRepPtr->elemCount = elementCount*objc;
+    dataArray = &listRepPtr->elements;
+
+    /*
+     * Set the elements. Note that we handle the common degenerate case of a
+     * single value being repeated separately to permit the compiler as much
+     * room as possible to optimize a loop that might be run a very large
+     * number of times.
+     */
+
+    if (objc == 1) {
+	register Tcl_Obj *tmpPtr = objv[0];
+
+	tmpPtr->refCount += elementCount;
+	for (i=0 ; i<elementCount ; i++) {
+	    dataArray[i] = tmpPtr;
+	}
+    } else {
+	int j, k = 0;
+
+	for (i=0 ; i<elementCount ; i++) {
+	    for (j=0 ; j<objc ; j++) {
+		Tcl_IncrRefCount(objv[j]);
+		dataArray[k++] = objv[j];
+	    }
+	}
+    }
+
+    Tcl_SetObjResult(interp, listPtr);
     return TCL_OK;
 }
 
@@ -3048,12 +2505,12 @@ Tcl_LrangeObjCmd(notUsed, interp, objc, objv)
  *
  * Tcl_LreplaceObjCmd --
  *
- *	This object-based procedure is invoked to process the "lreplace" 
- *	Tcl command. See the user documentation for details on what it does.
+ *	This object-based procedure is invoked to process the "lreplace" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
- *	A new Tcl list object formed by replacing zero or more elements of
- *	a list.
+ *	A new Tcl list object formed by replacing zero or more elements of a
+ *	list.
  *
  * Side effects:
  *	See the user documentation.
@@ -3061,16 +2518,15 @@ Tcl_LrangeObjCmd(notUsed, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_LreplaceObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LreplaceObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register Tcl_Obj *listPtr;
-    int isDuplicate, first, last, listLen, numToDelete, result;
+    int first, last, listLen, numToDelete, result;
 
     if (objc < 4) {
 	Tcl_WrongNumArgs(interp, 1, objv,
@@ -3078,42 +2534,41 @@ Tcl_LreplaceObjCmd(dummy, interp, objc, objv)
 	return TCL_ERROR;
     }
 
-    result = Tcl_ListObjLength(interp, objv[1], &listLen);
+    result = TclListObjLength(interp, objv[1], &listLen);
     if (result != TCL_OK) {
 	return result;
     }
 
     /*
-     * Get the first and last indexes.  "end" is interpreted to be the index
-     * for the last element, such that using it will cause that element to
-     * be included for deletion.
+     * Get the first and last indexes. "end" is interpreted to be the index
+     * for the last element, such that using it will cause that element to be
+     * included for deletion.
      */
 
-    result = TclGetIntForIndex(interp, objv[2], /*end*/ (listLen - 1), &first);
+    result = TclGetIntForIndexM(interp, objv[2], /*end*/ listLen-1, &first);
     if (result != TCL_OK) {
 	return result;
     }
 
-    result = TclGetIntForIndex(interp, objv[3], /*end*/ (listLen - 1), &last);
+    result = TclGetIntForIndexM(interp, objv[3], /*end*/ listLen-1, &last);
     if (result != TCL_OK) {
 	return result;
     }
 
-    if (first < 0)  {
+    if (first < 0) {
     	first = 0;
     }
 
     /*
      * Complain if the user asked for a start element that is greater than the
-     * list length.  This won't ever trigger for the "end*" case as that will
+     * list length. This won't ever trigger for the "end-*" case as that will
      * be properly constrained by TclGetIntForIndex because we use listLen-1
      * (to allow for replacing the last elem).
      */
 
     if ((first >= listLen) && (listLen > 0)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"list doesn't contain element ",
-		Tcl_GetString(objv[2]), (int *) NULL);
+	Tcl_AppendResult(interp, "list doesn't contain element ",
+		TclGetString(objv[2]), NULL);
 	return TCL_ERROR;
     }
     if (last >= listLen) {
@@ -3126,35 +2581,109 @@ Tcl_LreplaceObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * If the list object is unshared we can modify it directly, otherwise
-     * we create a copy to modify: this is "copy on write".
+     * If the list object is unshared we can modify it directly, otherwise we
+     * create a copy to modify: this is "copy on write".
      */
 
     listPtr = objv[1];
-    isDuplicate = 0;
     if (Tcl_IsShared(listPtr)) {
-	listPtr = Tcl_DuplicateObj(listPtr);
-	isDuplicate = 1;
+	listPtr = TclListObjCopy(NULL, listPtr);
     }
-    if (objc > 4) {
-	result = Tcl_ListObjReplace(interp, listPtr, first, numToDelete,
-	        (objc-4), &(objv[4]));
-    } else {
-	result = Tcl_ListObjReplace(interp, listPtr, first, numToDelete,
-		0, NULL);
+
+    /*
+     * Note that we call Tcl_ListObjReplace even when numToDelete == 0 and
+     * objc == 4. In this case, the list value of listPtr is not changed (no
+     * elements are removed or added), but by making the call we are assured
+     * we end up with a list in canonical form. Resist any temptation to
+     * optimize this case away.
+     */
+
+    Tcl_ListObjReplace(NULL, listPtr, first, numToDelete, objc-4, &(objv[4]));
+
+    /*
+     * Set the interpreter's object result.
+     */
+
+    Tcl_SetObjResult(interp, listPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LreverseObjCmd --
+ *
+ *	This procedure is invoked to process the "lreverse" Tcl command. See
+ *	the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LreverseObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument values. */
+{
+    Tcl_Obj **elemv;
+    int elemc, i, j;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "list");
+	return TCL_ERROR;
     }
-    if (result != TCL_OK) {
-	if (isDuplicate) {
-	    Tcl_DecrRefCount(listPtr); /* free unneeded obj */
-	}
-	return result;
+    if (TclListObjGetElements(interp, objv[1], &elemc, &elemv) != TCL_OK) {
+	return TCL_ERROR;
     }
 
     /*
-     * Set the interpreter's object result. 
+     * If the list is empty, just return it [Bug 1876793]
      */
 
-    Tcl_SetObjResult(interp, listPtr);
+    if (!elemc) {
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+
+    if (Tcl_IsShared(objv[1])
+	    || (ListRepPtr(objv[1])->refCount > 1)) {	/* Bug 1675044 */
+	Tcl_Obj *resultObj, **dataArray;
+	List *listRepPtr;
+
+	resultObj = Tcl_NewListObj(elemc, NULL);
+	listRepPtr = ListRepPtr(resultObj);
+	listRepPtr->elemCount = elemc;
+	dataArray = &listRepPtr->elements;
+
+	for (i=0,j=elemc-1 ; i<elemc ; i++,j--) {
+	    dataArray[j] = elemv[i];
+	    Tcl_IncrRefCount(elemv[i]);
+	}
+
+	Tcl_SetObjResult(interp, resultObj);
+    } else {
+
+	/*
+	 * Not shared, so swap "in place". This relies on Tcl_LOGE above
+	 * returning a pointer to the live array of Tcl_Obj values.
+	 */
+
+	for (i=0,j=elemc-1 ; i<j ; i++,j--) {
+	    Tcl_Obj *tmp = elemv[i];
+
+	    elemv[i] = elemv[j];
+	    elemv[j] = tmp;
+	}
+	TclInvalidateStringRep(objv[1]);
+	Tcl_SetObjResult(interp, objv[1]);
+    }
     return TCL_OK;
 }
 
@@ -3163,8 +2692,8 @@ Tcl_LreplaceObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_LsearchObjCmd --
  *
- *	This procedure is invoked to process the "lsearch" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "lsearch" Tcl command. See
+ *	the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -3176,30 +2705,34 @@ Tcl_LreplaceObjCmd(dummy, interp, objc, objv)
  */
 
 int
-Tcl_LsearchObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument values. */
+Tcl_LsearchObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument values. */
 {
     char *bytes, *patternBytes;
     int i, match, mode, index, result, listc, length, elemLen;
-    int dataType, isIncreasing, lower, upper, patInt, objInt;
-    int offset, allMatches, inlineReturn, negatedMatch;
+    int dataType, isIncreasing, lower, upper, patInt, objInt, offset;
+    int allMatches, inlineReturn, negatedMatch, returnSubindices, noCase;
     double patDouble, objDouble;
-    Tcl_Obj *patObj, **listv, *listPtr, *startPtr;
+    SortInfo sortInfo;
+    Tcl_Obj *patObj, **listv, *listPtr, *startPtr, *itemPtr;
+    SortStrCmpFn_t strCmpFn = strcmp;
     Tcl_RegExp regexp = NULL;
-    static CONST char *options[] = {
-	"-all",	    "-ascii", "-decreasing", "-dictionary",
-	"-exact",   "-glob",  "-increasing", "-inline",
-	"-integer", "-not",   "-real",	     "-regexp",
-	"-sorted",  "-start", NULL
+    static const char *options[] = {
+	"-all",	    "-ascii",   "-decreasing", "-dictionary",
+	"-exact",   "-glob",    "-increasing", "-index",
+	"-inline",  "-integer", "-nocase",     "-not",
+	"-real",    "-regexp",  "-sorted",     "-start",
+	"-subindices", NULL
     };
     enum options {
 	LSEARCH_ALL, LSEARCH_ASCII, LSEARCH_DECREASING, LSEARCH_DICTIONARY,
-	LSEARCH_EXACT, LSEARCH_GLOB, LSEARCH_INCREASING, LSEARCH_INLINE,
-	LSEARCH_INTEGER, LSEARCH_NOT, LSEARCH_REAL, LSEARCH_REGEXP,
-	LSEARCH_SORTED, LSEARCH_START
+	LSEARCH_EXACT, LSEARCH_GLOB, LSEARCH_INCREASING, LSEARCH_INDEX,
+	LSEARCH_INLINE, LSEARCH_INTEGER, LSEARCH_NOCASE, LSEARCH_NOT,
+	LSEARCH_REAL, LSEARCH_REGEXP, LSEARCH_SORTED, LSEARCH_START,
+	LSEARCH_SUBINDICES
     };
     enum datatypes {
 	ASCII, DICTIONARY, INTEGER, REAL
@@ -3213,10 +2746,19 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
     isIncreasing = 1;
     allMatches = 0;
     inlineReturn = 0;
+    returnSubindices = 0;
     negatedMatch = 0;
     listPtr = NULL;
     startPtr = NULL;
     offset = 0;
+    noCase = 0;
+    sortInfo.compareCmdPtr = NULL;
+    sortInfo.isIncreasing = 1;
+    sortInfo.sortMode = 0;
+    sortInfo.interp = interp;
+    sortInfo.resultCode = TCL_OK;
+    sortInfo.indexv = NULL;
+    sortInfo.indexc = 0;
 
     if (objc < 3) {
 	Tcl_WrongNumArgs(interp, 1, objv, "?options? list pattern");
@@ -3226,9 +2768,12 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
     for (i = 1; i < objc-2; i++) {
 	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, &index)
 		!= TCL_OK) {
-	    if (startPtr) {
+	    if (startPtr != NULL) {
 		Tcl_DecrRefCount(startPtr);
 	    }
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
 	    return TCL_ERROR;
 	}
 	switch ((enum options) index) {
@@ -3240,6 +2785,7 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	    break;
 	case LSEARCH_DECREASING:	/* -decreasing */
 	    isIncreasing = 0;
+	    sortInfo.isIncreasing = 0;
 	    break;
 	case LSEARCH_DICTIONARY:	/* -dictionary */
 	    dataType = DICTIONARY;
@@ -3252,6 +2798,7 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	    break;
 	case LSEARCH_INCREASING:	/* -increasing */
 	    isIncreasing = 1;
+	    sortInfo.isIncreasing = 1;
 	    break;
 	case LSEARCH_INLINE:		/* -inline */
 	    inlineReturn = 1;
@@ -3259,6 +2806,10 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	case LSEARCH_INTEGER:		/* -integer */
 	    dataType = INTEGER;
 	    break;
+	case LSEARCH_NOCASE:		/* -nocase */
+	    strCmpFn = strcasecmp;
+	    noCase = 1;
+	    break;
 	case LSEARCH_NOT:		/* -not */
 	    negatedMatch = 1;
 	    break;
@@ -3271,88 +2822,183 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	case LSEARCH_SORTED:		/* -sorted */
 	    mode = SORTED;
 	    break;
+	case LSEARCH_SUBINDICES:	/* -subindices */
+	    returnSubindices = 1;
+	    break;
 	case LSEARCH_START:		/* -start */
 	    /*
-	     * If there was a previous -start option, release its saved
-	     * index because it will either be replaced or there will be
-	     * an error.
+	     * If there was a previous -start option, release its saved index
+	     * because it will either be replaced or there will be an error.
 	     */
-	    if (startPtr) {
+
+	    if (startPtr != NULL) {
 		Tcl_DecrRefCount(startPtr);
 	    }
 	    if (i > objc-4) {
+		if (sortInfo.indexc > 1) {
+		    ckfree((char *) sortInfo.indexv);
+		}
 		Tcl_AppendResult(interp, "missing starting index", NULL);
 		return TCL_ERROR;
 	    }
 	    i++;
 	    if (objv[i] == objv[objc - 2]) {
 		/*
-		 * Take copy to prevent shimmering problems.  Note
-		 * that it does not matter if the index obj is also a
-		 * component of the list being searched.  We only need
-		 * to copy where the list and the index are
-		 * one-and-the-same.
+		 * Take copy to prevent shimmering problems. Note that it does
+		 * not matter if the index obj is also a component of the list
+		 * being searched. We only need to copy where the list and the
+		 * index are one-and-the-same.
 		 */
+
 		startPtr = Tcl_DuplicateObj(objv[i]);
 	    } else {
 		startPtr = objv[i];
 		Tcl_IncrRefCount(startPtr);
 	    }
+	    break;
+	case LSEARCH_INDEX: {		/* -index */
+	    Tcl_Obj **indices;
+	    int j;
+
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
+	    if (i > objc-4) {
+		if (startPtr != NULL) {
+		    Tcl_DecrRefCount(startPtr);
+		}
+		Tcl_AppendResult(interp,
+			"\"-index\" option must be followed by list index",
+			NULL);
+		return TCL_ERROR;
+	    }
+
+	    /*
+	     * Store the extracted indices for processing by sublist
+	     * extraction. Note that we don't do this using objects because
+	     * that has shimmering problems.
+	     */
+
+	    i++;
+	    if (TclListObjGetElements(interp, objv[i],
+		    &sortInfo.indexc, &indices) != TCL_OK) {
+		if (startPtr != NULL) {
+		    Tcl_DecrRefCount(startPtr);
+		}
+		return TCL_ERROR;
+	    }
+	    switch (sortInfo.indexc) {
+	    case 0:
+		sortInfo.indexv = NULL;
+		break;
+	    case 1:
+		sortInfo.indexv = &sortInfo.singleIndex;
+		break;
+	    default:
+		sortInfo.indexv = (int *)
+			ckalloc(sizeof(int) * sortInfo.indexc);
+	    }
+
+	    /*
+	     * Fill the array by parsing each index. We don't know whether
+	     * their scale is sensible yet, but we at least perform the
+	     * syntactic check here.
+	     */
+
+	    for (j=0 ; j<sortInfo.indexc ; j++) {
+		if (TclGetIntForIndexM(interp, indices[j], SORTIDX_END,
+			&sortInfo.indexv[j]) != TCL_OK) {
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
+		    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			    "\n    (-index option item number %d)", j));
+		    return TCL_ERROR;
+		}
+	    }
+	    break;
+	}
+	}
+    }
+
+    /*
+     * Subindices only make sense if asked for with -index option set.
+     */
+
+    if (returnSubindices && sortInfo.indexc==0) {
+	if (startPtr != NULL) {
+	    Tcl_DecrRefCount(startPtr);
 	}
+	Tcl_AppendResult(interp,
+		"-subindices cannot be used without -index option", NULL);
+	return TCL_ERROR;
     }
 
     if ((enum modes) mode == REGEXP) {
 	/*
 	 * We can shimmer regexp/list if listv[i] == pattern, so get the
 	 * regexp rep before the list rep. First time round, omit the interp
-         * and hope that the compilation will succeed. If it fails, we'll
-         * recompile in "expensive" mode with a place to put error messages.
+	 * and hope that the compilation will succeed. If it fails, we'll
+	 * recompile in "expensive" mode with a place to put error messages.
 	 */
 
 	regexp = Tcl_GetRegExpFromObj(NULL, objv[objc - 1],
-		TCL_REG_ADVANCED | TCL_REG_NOSUB);
+		TCL_REG_ADVANCED | TCL_REG_NOSUB |
+		(noCase ? TCL_REG_NOCASE : 0));
 	if (regexp == NULL) {
-            /*
-             * Failed to compile the RE. Try again without the TCL_REG_NOSUB
-             * flag in case the RE had sub-expressions in it [Bug 1366683].
-             * If this fails, an error message will be left in the
-             * interpreter.
-             */
-
-            regexp = Tcl_GetRegExpFromObj(interp, objv[objc - 1],
-		    TCL_REG_ADVANCED);
+	    /*
+	     * Failed to compile the RE. Try again without the TCL_REG_NOSUB
+	     * flag in case the RE had sub-expressions in it [Bug 1366683]. If
+	     * this fails, an error message will be left in the interpreter.
+	     */
+
+	    regexp = Tcl_GetRegExpFromObj(interp, objv[objc - 1],
+		    TCL_REG_ADVANCED | (noCase ? TCL_REG_NOCASE : 0));
 	}
 
 	if (regexp == NULL) {
-	    if (startPtr) {
+	    if (startPtr != NULL) {
 		Tcl_DecrRefCount(startPtr);
 	    }
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
 	    return TCL_ERROR;
 	}
     }
 
     /*
-     * Make sure the list argument is a list object and get its length and
-     * a pointer to its array of element pointers.
+     * Make sure the list argument is a list object and get its length and a
+     * pointer to its array of element pointers.
      */
 
-    result = Tcl_ListObjGetElements(interp, objv[objc - 2], &listc, &listv);
+    result = TclListObjGetElements(interp, objv[objc - 2], &listc, &listv);
     if (result != TCL_OK) {
-	if (startPtr) {
+	if (startPtr != NULL) {
 	    Tcl_DecrRefCount(startPtr);
 	}
+	if (sortInfo.indexc > 1) {
+	    ckfree((char *) sortInfo.indexv);
+	}
 	return result;
     }
 
     /*
      * Get the user-specified start offset.
      */
+
     if (startPtr) {
-	result = TclGetIntForIndex(interp, startPtr, listc-1, &offset);
+	result = TclGetIntForIndexM(interp, startPtr, listc-1, &offset);
 	Tcl_DecrRefCount(startPtr);
 	if (result != TCL_OK) {
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
 	    return result;
 	}
+	if (offset < 0) {
+	    offset = 0;
+	}
 
 	/*
 	 * If the search started past the end of the list, we just return a
@@ -3360,6 +3006,9 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	 */
 
 	if (offset > listc-1) {
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
 	    if (allMatches || inlineReturn) {
 		Tcl_ResetResult(interp);
 	    } else {
@@ -3367,9 +3016,6 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	    }
 	    return TCL_OK;
 	}
-	if (offset < 0) {
-	    offset = 0;
-	}
     }
 
     patObj = objv[objc - 1];
@@ -3378,59 +3024,91 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	switch ((enum datatypes) dataType) {
 	case ASCII:
 	case DICTIONARY:
-	    patternBytes = Tcl_GetStringFromObj(patObj, &length);
+	    patternBytes = TclGetStringFromObj(patObj, &length);
 	    break;
 	case INTEGER:
-	    result = Tcl_GetIntFromObj(interp, patObj, &patInt);
+	    result = TclGetIntFromObj(interp, patObj, &patInt);
 	    if (result != TCL_OK) {
+		if (sortInfo.indexc > 1) {
+		    ckfree((char *) sortInfo.indexv);
+		}
 		return result;
 	    }
-	    Tcl_ListObjGetElements(NULL, objv[objc - 2], &listc, &listv);
+
+	    /*
+	     * List representation might have been shimmered; restore it. [Bug
+	     * 1844789]
+	     */
+
+	    TclListObjGetElements(NULL, objv[objc - 2], &listc, &listv);
 	    break;
 	case REAL:
 	    result = Tcl_GetDoubleFromObj(interp, patObj, &patDouble);
 	    if (result != TCL_OK) {
+		if (sortInfo.indexc > 1) {
+		    ckfree((char *) sortInfo.indexv);
+		}
 		return result;
 	    }
-	    Tcl_ListObjGetElements(NULL, objv[objc - 2], &listc, &listv);
+
+	    /*
+	     * List representation might have been shimmered; restore it. [Bug
+	     * 1844789]
+	     */
+
+	    TclListObjGetElements(NULL, objv[objc - 2], &listc, &listv);
 	    break;
 	}
     } else {
-	patternBytes = Tcl_GetStringFromObj(patObj, &length);
+	patternBytes = TclGetStringFromObj(patObj, &length);
     }
 
     /*
-     * Set default index value to -1, indicating failure; if we find the
-     * item in the course of our search, index will be set to the correct
-     * value.
+     * Set default index value to -1, indicating failure; if we find the item
+     * in the course of our search, index will be set to the correct value.
      */
+
     index = -1;
     match = 0;
 
     if ((enum modes) mode == SORTED && !allMatches && !negatedMatch) {
 	/*
-	 * If the data is sorted, we can do a more intelligent search.
-	 * Note that there is no point in being smart when -all was
-	 * specified; in that case, we have to look at all items anyway,
-	 * and there is no sense in doing this when the match sense is
-	 * inverted.
+	 * If the data is sorted, we can do a more intelligent search. Note
+	 * that there is no point in being smart when -all was specified; in
+	 * that case, we have to look at all items anyway, and there is no
+	 * sense in doing this when the match sense is inverted.
 	 */
+
 	lower = offset - 1;
 	upper = listc;
-	while (lower + 1 != upper) {
+	while (lower + 1 != upper && sortInfo.resultCode == TCL_OK) {
 	    i = (lower + upper)/2;
+	    if (sortInfo.indexc != 0) {
+		itemPtr = SelectObjFromSublist(listv[i], &sortInfo);
+		if (sortInfo.resultCode != TCL_OK) {
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
+		    return sortInfo.resultCode;
+		}
+	    } else {
+		itemPtr = listv[i];
+	    }
 	    switch ((enum datatypes) dataType) {
 	    case ASCII:
-		bytes = Tcl_GetString(listv[i]);
-		match = strcmp(patternBytes, bytes);
+		bytes = TclGetString(itemPtr);
+		match = strCmpFn(patternBytes, bytes);
 		break;
 	    case DICTIONARY:
-		bytes = Tcl_GetString(listv[i]);
+		bytes = TclGetString(itemPtr);
 		match = DictionaryCompare(patternBytes, bytes);
 		break;
 	    case INTEGER:
-		result = Tcl_GetIntFromObj(interp, listv[i], &objInt);
+		result = TclGetIntFromObj(interp, itemPtr, &objInt);
 		if (result != TCL_OK) {
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
 		    return result;
 		}
 		if (patInt == objInt) {
@@ -3442,8 +3120,11 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 		}
 		break;
 	    case REAL:
-		result = Tcl_GetDoubleFromObj(interp, listv[i], &objDouble);
+		result = Tcl_GetDoubleFromObj(interp, itemPtr, &objDouble);
 		if (result != TCL_OK) {
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
 		    return result;
 		}
 		if (patDouble == objDouble) {
@@ -3457,17 +3138,19 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	    }
 	    if (match == 0) {
 		/*
-		 * Normally, binary search is written to stop when it
-		 * finds a match.  If there are duplicates of an element in
-		 * the list, our first match might not be the first occurance.
-		 * Consider:  0 0 0 1 1 1 2 2 2
-		 * To maintain consistancy with standard lsearch semantics,
-		 * we must find the leftmost occurance of the pattern in the
-		 * list.  Thus we don't just stop searching here.  This
+		 * Normally, binary search is written to stop when it finds a
+		 * match. If there are duplicates of an element in the list,
+		 * our first match might not be the first occurance.
+		 * Consider: 0 0 0 1 1 1 2 2 2
+		 *
+		 * To maintain consistancy with standard lsearch semantics, we
+		 * must find the leftmost occurance of the pattern in the
+		 * list. Thus we don't just stop searching here. This
 		 * variation means that a search always makes log n
-		 * comparisons (normal binary search might "get lucky" with
-		 * an early comparison).
+		 * comparisons (normal binary search might "get lucky" with an
+		 * early comparison).
 		 */
+
 		index = i;
 		upper = i;
 	    } else if (match > 0) {
@@ -3492,83 +3175,138 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
 	 *   - our matching sense is negated
 	 *   - we're building a list of all matched items
 	 */
+
 	if (allMatches) {
-	    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
+	    listPtr = Tcl_NewListObj(0, NULL);
 	}
 	for (i = offset; i < listc; i++) {
 	    match = 0;
+	    if (sortInfo.indexc != 0) {	    
+		itemPtr = SelectObjFromSublist(listv[i], &sortInfo);
+		if (sortInfo.resultCode != TCL_OK) {
+		    if (listPtr != NULL) {
+			Tcl_DecrRefCount(listPtr);
+		    }
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
+		    return sortInfo.resultCode;
+		}
+	    } else {
+		itemPtr = listv[i];
+	    }
+		
 	    switch ((enum modes) mode) {
 	    case SORTED:
 	    case EXACT:
 		switch ((enum datatypes) dataType) {
 		case ASCII:
-		    bytes = Tcl_GetStringFromObj(listv[i], &elemLen);
+		    bytes = TclGetStringFromObj(itemPtr, &elemLen);
 		    if (length == elemLen) {
-			match = (memcmp(bytes, patternBytes,
-				(size_t) length) == 0);
+			/*
+			 * This split allows for more optimal compilation of
+			 * memcmp/strcasecmp.
+			 */
+
+			if (noCase) {
+			    match = (strcasecmp(bytes, patternBytes) == 0);
+			} else {
+			    match = (memcmp(bytes, patternBytes,
+				    (size_t) length) == 0);
+			}
 		    }
 		    break;
+
 		case DICTIONARY:
-		    bytes = Tcl_GetString(listv[i]);
+		    bytes = TclGetString(itemPtr);
 		    match = (DictionaryCompare(bytes, patternBytes) == 0);
 		    break;
+
 		case INTEGER:
-		    result = Tcl_GetIntFromObj(interp, listv[i], &objInt);
+		    result = TclGetIntFromObj(interp, itemPtr, &objInt);
 		    if (result != TCL_OK) {
-			if (listPtr) {
+			if (listPtr != NULL) {
 			    Tcl_DecrRefCount(listPtr);
 			}
+			if (sortInfo.indexc > 1) {
+			    ckfree((char *) sortInfo.indexv);
+			}
 			return result;
 		    }
 		    match = (objInt == patInt);
 		    break;
+
 		case REAL:
-		    result = Tcl_GetDoubleFromObj(interp, listv[i],
-			    &objDouble);
+		    result = Tcl_GetDoubleFromObj(interp,itemPtr, &objDouble);
 		    if (result != TCL_OK) {
 			if (listPtr) {
 			    Tcl_DecrRefCount(listPtr);
 			}
+			if (sortInfo.indexc > 1) {
+			    ckfree((char *) sortInfo.indexv);
+			}
 			return result;
 		    }
 		    match = (objDouble == patDouble);
 		    break;
 		}
 		break;
+
 	    case GLOB:
-		match = Tcl_StringMatch(Tcl_GetString(listv[i]),
-			patternBytes);
+		match = Tcl_StringCaseMatch(TclGetString(itemPtr),
+			patternBytes, noCase);
 		break;
+
 	    case REGEXP:
-		match = Tcl_RegExpExecObj(interp, regexp, listv[i], 0, 0, 0);
+		match = Tcl_RegExpExecObj(interp, regexp, itemPtr, 0, 0, 0);
 		if (match < 0) {
 		    Tcl_DecrRefCount(patObj);
-		    if (listPtr) {
+		    if (listPtr != NULL) {
 			Tcl_DecrRefCount(listPtr);
 		    }
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
 		    return TCL_ERROR;
 		}
 		break;
 	    }
+
 	    /*
-	     * Invert match condition for -not
+	     * Invert match condition for -not.
 	     */
+
 	    if (negatedMatch) {
 		match = !match;
 	    }
-	    if (match != 0) {
-		if (!allMatches) {
-		    index = i;
-		    break;
-		} else if (inlineReturn) {
-		    /*
-		     * Note that these appends are not expected to fail.
-		     */
-		    Tcl_ListObjAppendElement(interp, listPtr, listv[i]);
+	    if (!match) {
+		continue;
+	    }
+	    if (!allMatches) {
+		index = i;
+		break;
+	    } else if (inlineReturn) {
+		/*
+		 * Note that these appends are not expected to fail.
+		 */
+
+		if (returnSubindices && (sortInfo.indexc != 0)) {
+		    itemPtr = SelectObjFromSublist(listv[i], &sortInfo);
 		} else {
-		    Tcl_ListObjAppendElement(interp, listPtr,
-			    Tcl_NewIntObj(i));
+		    itemPtr = listv[i];
+		}
+		Tcl_ListObjAppendElement(interp, listPtr, itemPtr);
+	    } else if (returnSubindices) {
+		int j;
+
+		itemPtr = Tcl_NewIntObj(i);
+		for (j=0 ; j<sortInfo.indexc ; j++) {
+		    Tcl_ListObjAppendElement(interp, itemPtr,
+			    Tcl_NewIntObj(sortInfo.indexv[j]));
 		}
+		Tcl_ListObjAppendElement(interp, listPtr, itemPtr);
+	    } else {
+		Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewIntObj(i));
 	    }
 	}
     }
@@ -3576,19 +3314,40 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
     /*
      * Return everything or a single value.
      */
+
     if (allMatches) {
 	Tcl_SetObjResult(interp, listPtr);
     } else if (!inlineReturn) {
-	Tcl_SetIntObj(Tcl_GetObjResult(interp), index);
+	if (returnSubindices) {
+	    int j;
+
+	    itemPtr = Tcl_NewIntObj(index);
+	    for (j=0 ; j<sortInfo.indexc ; j++) {
+		Tcl_ListObjAppendElement(interp, itemPtr,
+			Tcl_NewIntObj(sortInfo.indexv[j]));
+	    }
+	    Tcl_SetObjResult(interp, itemPtr);
+	} else {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(index));
+	}
     } else if (index < 0) {
 	/*
-	 * Is this superfluous?  The result should be a blank object
-	 * by default...
+	 * Is this superfluous? The result should be a blank object by
+	 * default...
 	 */
+
 	Tcl_SetObjResult(interp, Tcl_NewObj());
     } else {
 	Tcl_SetObjResult(interp, listv[index]);
     }
+
+    /*
+     * Cleanup the index list array.
+     */
+
+    if (sortInfo.indexc > 1) {
+	ckfree((char *) sortInfo.indexv);
+    }
     return TCL_OK;
 }
 
@@ -3597,8 +3356,8 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
  *
  * Tcl_LsetObjCmd --
  *
- *	This procedure is invoked to process the "lset" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "lset" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -3610,66 +3369,71 @@ Tcl_LsearchObjCmd(clientData, interp, objc, objv)
  */
 
 int
-Tcl_LsetObjCmd( clientData, interp, objc, objv )
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument values. */
+Tcl_LsetObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument values. */
 {
+    Tcl_Obj *listPtr;		/* Pointer to the list being altered. */
+    Tcl_Obj *finalValuePtr;	/* Value finally assigned to the variable. */
 
-    Tcl_Obj* listPtr;		/* Pointer to the list being altered. */
-    Tcl_Obj* finalValuePtr;	/* Value finally assigned to the variable */
-
-    /* Check parameter count */
+    /*
+     * Check parameter count.
+     */
 
-    if ( objc < 3 ) {
-	Tcl_WrongNumArgs( interp, 1, objv, "listVar index ?index...? value" );
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "listVar ?index? ?index...? value");
 	return TCL_ERROR;
     }
 
-    /* Look up the list variable's value */
+    /*
+     * Look up the list variable's value.
+     */
 
-    listPtr = Tcl_ObjGetVar2( interp, objv[ 1 ], (Tcl_Obj*) NULL,
-			      TCL_LEAVE_ERR_MSG );
-    if ( listPtr == NULL ) {
+    listPtr = Tcl_ObjGetVar2(interp, objv[1], (Tcl_Obj *) NULL,
+	    TCL_LEAVE_ERR_MSG);
+    if (listPtr == NULL) {
 	return TCL_ERROR;
     }
 
-    /* 
-     * Substitute the value in the value.  Return either the value or
-     * else an unshared copy of it.
+    /*
+     * Substitute the value in the value. Return either the value or else an
+     * unshared copy of it.
      */
 
-    if ( objc == 4 ) {
-	finalValuePtr = TclLsetList( interp, listPtr,
-				     objv[ 2 ], objv[ 3 ] );
+    if (objc == 4) {
+	finalValuePtr = TclLsetList(interp, listPtr, objv[2], objv[3]);
     } else {
-	finalValuePtr = TclLsetFlat( interp, listPtr,
-				     objc-3, objv+2, objv[ objc-1 ] );
+	finalValuePtr = TclLsetFlat(interp, listPtr, objc-3, objv+2,
+		objv[objc-1]);
     }
 
     /*
      * If substitution has failed, bail out.
      */
 
-    if ( finalValuePtr == NULL ) {
+    if (finalValuePtr == NULL) {
 	return TCL_ERROR;
     }
 
-    /* Finally, update the variable so that traces fire. */
+    /*
+     * Finally, update the variable so that traces fire.
+     */
 
-    listPtr = Tcl_ObjSetVar2( interp, objv[1], NULL, finalValuePtr,
-			      TCL_LEAVE_ERR_MSG );
-    Tcl_DecrRefCount( finalValuePtr );
-    if ( listPtr == NULL ) {
+    listPtr = Tcl_ObjSetVar2(interp, objv[1], NULL, finalValuePtr,
+	    TCL_LEAVE_ERR_MSG);
+    Tcl_DecrRefCount(finalValuePtr);
+    if (listPtr == NULL) {
 	return TCL_ERROR;
     }
 
-    /* Return the new value of the variable as the interpreter result. */
+    /*
+     * Return the new value of the variable as the interpreter result.
+     */
 
-    Tcl_SetObjResult( interp, listPtr );
+    Tcl_SetObjResult(interp, listPtr);
     return TCL_OK;
-
 }
 
 /*
@@ -3677,8 +3441,8 @@ Tcl_LsetObjCmd( clientData, interp, objc, objv )
  *
  * Tcl_LsortObjCmd --
  *
- *	This procedure is invoked to process the "lsort" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "lsort" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -3690,27 +3454,34 @@ Tcl_LsetObjCmd( clientData, interp, objc, objv )
  */
 
 int
-Tcl_LsortObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument values. */
+Tcl_LsortObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument values. */
 {
-    int i, index, unique;
-    Tcl_Obj *resultPtr;
-    int length;
-    Tcl_Obj *cmdPtr, **listObjPtrs;
-    SortElement *elementArray;
-    SortElement *elementPtr;        
-    SortInfo sortInfo;                  /* Information about this sort that
-                                         * needs to be passed to the 
-                                         * comparison function */
-    static CONST char *switches[] = {
+    int i, j, index, indices, length, nocase = 0, sortMode, indexc;
+    Tcl_Obj *resultPtr, *cmdPtr, **listObjPtrs, *listObj, *indexPtr;
+    SortElement *elementArray, *elementPtr;
+    SortInfo sortInfo;		/* Information about this sort that needs to
+				 * be passed to the comparison function. */
+    static const char *switches[] = {
 	"-ascii", "-command", "-decreasing", "-dictionary", "-increasing",
-	"-index", "-integer", "-real", "-unique", (char *) NULL
+	"-index", "-indices", "-integer", "-nocase", "-real", "-unique", NULL
+    };
+    enum Lsort_Switches {
+	LSORT_ASCII, LSORT_COMMAND, LSORT_DECREASING, LSORT_DICTIONARY,
+	LSORT_INCREASING, LSORT_INDEX, LSORT_INDICES, LSORT_INTEGER,
+	LSORT_NOCASE, LSORT_REAL, LSORT_UNIQUE
     };
 
-    resultPtr = Tcl_GetObjResult(interp);
+    /*
+     * The subList array below holds pointers to temporary lists built during
+     * the merge sort. Element i of the array holds a list of length 2**i.
+     */
+#   define NUM_LISTS 30
+    SortElement *subList[NUM_LISTS+1];
+
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "?options? list");
 	return TCL_ERROR;
@@ -3722,199 +3493,312 @@ Tcl_LsortObjCmd(clientData, interp, objc, objv)
 
     sortInfo.isIncreasing = 1;
     sortInfo.sortMode = SORTMODE_ASCII;
-    sortInfo.index = SORTIDX_NONE;
+    sortInfo.indexv = NULL;
+    sortInfo.indexc = 0;
+    sortInfo.unique = 0;
     sortInfo.interp = interp;
-    sortInfo.resultCode = TCL_OK;
+    sortInfo.resultCode = TCL_OK;    
     cmdPtr = NULL;
-    unique = 0;
+    indices = 0;
     for (i = 1; i < objc-1; i++) {
-	if (Tcl_GetIndexFromObj(interp, objv[i], switches, "option", 0, &index)
-		!= TCL_OK) {
+	if (Tcl_GetIndexFromObj(interp, objv[i], switches, "option", 0,
+		&index) != TCL_OK) {
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
 	    return TCL_ERROR;
 	}
-	switch (index) {
-	    case 0:			/* -ascii */
-		sortInfo.sortMode = SORTMODE_ASCII;
-		break;
-	    case 1:			/* -command */
-		if (i == (objc-2)) {
-		    Tcl_AppendToObj(resultPtr,
-			    "\"-command\" option must be followed by comparison command",
-			    -1);
-		    return TCL_ERROR;
+	switch ((enum Lsort_Switches) index) {
+	case LSORT_ASCII:
+	    sortInfo.sortMode = SORTMODE_ASCII;
+	    break;
+	case LSORT_COMMAND:
+	    if (i == (objc-2)) {
+		if (sortInfo.indexc > 1) {
+		    ckfree((char *) sortInfo.indexv);
 		}
-		sortInfo.sortMode = SORTMODE_COMMAND;
-		cmdPtr = objv[i+1];
-		i++;
-		break;
-	    case 2:			/* -decreasing */
-		sortInfo.isIncreasing = 0;
-		break;
-	    case 3:			/* -dictionary */
-		sortInfo.sortMode = SORTMODE_DICTIONARY;
+		Tcl_AppendResult(interp,
+			"\"-command\" option must be followed "
+			"by comparison command", NULL);
+		return TCL_ERROR;
+	    }
+	    sortInfo.sortMode = SORTMODE_COMMAND;
+	    cmdPtr = objv[i+1];
+	    i++;
+	    break;
+	case LSORT_DECREASING:
+	    sortInfo.isIncreasing = 0;
+	    break;
+	case LSORT_DICTIONARY:
+	    sortInfo.sortMode = SORTMODE_DICTIONARY;
+	    break;
+	case LSORT_INCREASING:
+	    sortInfo.isIncreasing = 1;
+	    break;
+	case LSORT_INDEX: {
+	    Tcl_Obj **indices;
+
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
+	    if (i == (objc-2)) {
+		Tcl_AppendResult(interp, "\"-index\" option must be "
+			"followed by list index", NULL);
+		return TCL_ERROR;
+	    }
+
+	    /*
+	     * Take copy to prevent shimmering problems.
+	     */
+
+	    if (TclListObjGetElements(interp, objv[i+1], &sortInfo.indexc,
+		    &indices) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch (sortInfo.indexc) {
+	    case 0:
+		sortInfo.indexv = NULL;
 		break;
-	    case 4:			/* -increasing */
-		sortInfo.isIncreasing = 1;
+	    case 1:
+		sortInfo.indexv = &sortInfo.singleIndex;
 		break;
-	    case 5:			/* -index */
-		if (i == (objc-2)) {
-		    Tcl_AppendToObj(resultPtr,
-			    "\"-index\" option must be followed by list index",
-			    -1);
-		    return TCL_ERROR;
-		}
-		if (TclGetIntForIndex(interp, objv[i+1], SORTIDX_END,
-			&sortInfo.index) != TCL_OK) {
+	    default:
+		sortInfo.indexv = (int *)
+			ckalloc(sizeof(int) * sortInfo.indexc);
+	    }
+
+	    /*
+	     * Fill the array by parsing each index. We don't know whether
+	     * their scale is sensible yet, but we at least perform the
+	     * syntactic check here.
+	     */
+
+	    for (j=0 ; j<sortInfo.indexc ; j++) {
+		if (TclGetIntForIndexM(interp, indices[j], SORTIDX_END,
+			&sortInfo.indexv[j]) != TCL_OK) {
+		    if (sortInfo.indexc > 1) {
+			ckfree((char *) sortInfo.indexv);
+		    }
+		    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			    "\n    (-index option item number %d)", j));
 		    return TCL_ERROR;
 		}
-		i++;
-		break;
-	    case 6:			/* -integer */
-		sortInfo.sortMode = SORTMODE_INTEGER;
-		break;
-	    case 7:			/* -real */
-		sortInfo.sortMode = SORTMODE_REAL;
-		break;
-	    case 8:			/* -unique */
-		unique = 1;
-		break;
+	    }
+	    i++;
+	    break;
 	}
+	case LSORT_INTEGER:
+	    sortInfo.sortMode = SORTMODE_INTEGER;
+	    break;
+	case LSORT_NOCASE:
+	    nocase = 1;
+	    break;
+	case LSORT_REAL:
+	    sortInfo.sortMode = SORTMODE_REAL;
+	    break;
+	case LSORT_UNIQUE:
+	    sortInfo.unique = 1;
+	    break;
+	case LSORT_INDICES:
+	    indices = 1;
+	    break;
+	}
+    }
+    if (nocase && (sortInfo.sortMode == SORTMODE_ASCII)) {
+	sortInfo.sortMode = SORTMODE_ASCII_NC;
     }
+
+    listObj = objv[objc-1];
+
     if (sortInfo.sortMode == SORTMODE_COMMAND) {
+	Tcl_Obj *newCommandPtr, *newObjPtr;
+
 	/*
-	 * The existing command is a list. We want to flatten it, append
-	 * two dummy arguments on the end, and replace these arguments
-	 * later.
+	 * When sorting using a command, we are reentrant and therefore might
+	 * have the representation of the list being sorted shimmered out from
+	 * underneath our feet. Take a copy (cheap) to prevent this. [Bug
+	 * 1675116]
 	 */
 
-        Tcl_Obj *newCommandPtr = Tcl_DuplicateObj(cmdPtr);
-	Tcl_Obj *newObjPtr = Tcl_NewObj();
+	listObj = TclListObjCopy(interp, listObj);
+	if (listObj == NULL) {
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * The existing command is a list. We want to flatten it, append two
+	 * dummy arguments on the end, and replace these arguments later.
+	 */
 
+	newCommandPtr = Tcl_DuplicateObj(cmdPtr);
+	TclNewObj(newObjPtr);
 	Tcl_IncrRefCount(newCommandPtr);
 	if (Tcl_ListObjAppendElement(interp, newCommandPtr, newObjPtr)
 		!= TCL_OK) {
-	    Tcl_DecrRefCount(newCommandPtr);
+	    TclDecrRefCount(newCommandPtr);
+	    TclDecrRefCount(listObj);
 	    Tcl_IncrRefCount(newObjPtr);
-	    Tcl_DecrRefCount(newObjPtr);
+	    TclDecrRefCount(newObjPtr);
+	    if (sortInfo.indexc > 1) {
+		ckfree((char *) sortInfo.indexv);
+	    }
 	    return TCL_ERROR;
 	}
 	Tcl_ListObjAppendElement(interp, newCommandPtr, Tcl_NewObj());
 	sortInfo.compareCmdPtr = newCommandPtr;
     }
 
-    sortInfo.resultCode = Tcl_ListObjGetElements(interp, objv[objc-1],
+    sortInfo.resultCode = TclListObjGetElements(interp, listObj,
 	    &length, &listObjPtrs);
     if (sortInfo.resultCode != TCL_OK || length <= 0) {
 	goto done;
     }
-    elementArray = (SortElement *) ckalloc(length * sizeof(SortElement));
-    for (i=0; i < length; i++){
-	elementArray[i].objPtr = listObjPtrs[i];
-	elementArray[i].count = 0;
-	elementArray[i].nextPtr = &elementArray[i+1];
-
+    sortInfo.numElements = length;
+    
+    indexc = sortInfo.indexc;
+    sortMode = sortInfo.sortMode;
+    if ((sortMode == SORTMODE_ASCII_NC)
+	    || (sortMode == SORTMODE_DICTIONARY)) {
 	/*
-	 * When sorting using a command, we are reentrant and therefore might
-	 * have the representation of the list being sorted shimmered out from
-	 * underneath our feet. Increment the reference counts of the elements
-	 * to sort to prevent this. [Bug 1675116]
+	 * For this function's purpose all string-based modes are equivalent
 	 */
+	
+	sortMode = SORTMODE_ASCII;
+    }
 
-	Tcl_IncrRefCount(elementArray[i].objPtr);
+    /*
+     * Initialize the sublists. After the following loop, subList[i] will
+     * contain a sorted sublist of length 2**i. Use one extra subList at the
+     * end, always at NULL, to indicate the end of the lists.
+     */
+    
+    for (j=0 ; j<=NUM_LISTS ; j++) {
+	subList[j] = NULL;
     }
-    elementArray[length-1].nextPtr = NULL;
-    elementPtr = MergeSort(elementArray, &sortInfo);
-    if (sortInfo.resultCode == TCL_OK) {
-	/*
-	 * Note: must clear the interpreter's result object: it could
-	 * have been set by the -command script.
-	 */
 
-	Tcl_ResetResult(interp);
-	resultPtr = Tcl_GetObjResult(interp);
-	if (unique) {
-	    for (; elementPtr != NULL; elementPtr = elementPtr->nextPtr){
-		if (elementPtr->count == 0) {
-		    Tcl_ListObjAppendElement(interp, resultPtr,
-			    elementPtr->objPtr);
-		}
+    /*
+     * The following loop creates a SortElement for each list element and
+     * begins sorting it into the sublists as it appears.
+     */
+
+    elementArray = (SortElement *) ckalloc( length * sizeof(SortElement));
+
+    for (i=0; i < length; i++){
+	if (indexc) {
+	    /*
+	     * If this is an indexed sort, retrieve the corresponding element
+	     */
+	    indexPtr = SelectObjFromSublist(listObjPtrs[i], &sortInfo);
+	    if (sortInfo.resultCode != TCL_OK) {
+		goto done1;
 	    }
 	} else {
-	    for (; elementPtr != NULL; elementPtr = elementPtr->nextPtr){
-		Tcl_ListObjAppendElement(interp, resultPtr,
-			elementPtr->objPtr);
+	    indexPtr = listObjPtrs[i];
+	}
+
+	/*
+	 * Determine the "value" of this object for sorting purposes
+	 */
+	
+	if (sortMode == SORTMODE_ASCII) {
+	    elementArray[i].index.strValuePtr = TclGetString(indexPtr);
+	} else if (sortMode == SORTMODE_INTEGER) {
+	    long a;
+	    if (TclGetLongFromObj(sortInfo.interp, indexPtr, &a) != TCL_OK) {
+		sortInfo.resultCode = TCL_ERROR;
+		goto done1;
+	    }
+	    elementArray[i].index.intValue = a;
+	} else if (sortInfo.sortMode == SORTMODE_REAL) {
+	    double a;
+	    if (Tcl_GetDoubleFromObj(sortInfo.interp, indexPtr, &a) != TCL_OK) {
+		sortInfo.resultCode = TCL_ERROR;
+		goto done1;
 	    }
+	    elementArray[i].index.doubleValue = a;
+	} else {
+	    elementArray[i].index.objValuePtr = indexPtr;
 	}
-    }
-    for (i=0; i<length; i++) {
-	Tcl_DecrRefCount(elementArray[i].objPtr);
-    }
-    ckfree((char*) elementArray);
 
-    done:
-    if (sortInfo.sortMode == SORTMODE_COMMAND) {
-	Tcl_DecrRefCount(sortInfo.compareCmdPtr);
-	sortInfo.compareCmdPtr = NULL;
+	/*
+	 * Determine the representation of this element in the result: either
+	 * the objPtr itself, or its index in the original list.
+	 */
+	
+	elementArray[i].objPtr = (indices ? INT2PTR(i) : listObjPtrs[i]);
+
+	/*
+	 * Merge this element in the pre-existing sublists (and merge together
+	 * sublists when we have two of the same size).
+	 */
+	
+	elementArray[i].nextPtr = NULL;
+	elementPtr = &elementArray[i];
+	for (j=0 ; subList[j] ; j++) {
+	    elementPtr = MergeLists(subList[j], elementPtr, &sortInfo);
+	    subList[j] = NULL;
+	}
+	if (j >= NUM_LISTS) {
+	    j = NUM_LISTS-1;
+	}
+	subList[j] = elementPtr;
     }
-    return sortInfo.resultCode;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * MergeSort -
- *
- *	This procedure sorts a linked list of SortElement structures
- *	use the merge-sort algorithm.
- *
- * Results:
- *      A pointer to the head of the list after sorting is returned.
- *
- * Side effects:
- *	None, unless a user-defined comparison command does something
- *	weird.
- *
- *----------------------------------------------------------------------
- */
 
-static SortElement *
-MergeSort(headPtr, infoPtr)
-    SortElement *headPtr;               /* First element on the list */
-    SortInfo *infoPtr;                  /* Information needed by the
-                                         * comparison operator */
-{
     /*
-     * The subList array below holds pointers to temporary lists built
-     * during the merge sort.  Element i of the array holds a list of
-     * length 2**i.
+     * Merge all sublists
      */
+    
+    elementPtr = subList[0];
+    for (j=1 ; j<NUM_LISTS ; j++) {
+	elementPtr = MergeLists(subList[j], elementPtr, &sortInfo);
+    }
 
-#   define NUM_LISTS 30
-    SortElement *subList[NUM_LISTS];
-    SortElement *elementPtr;
-    int i;
 
-    for(i = 0; i < NUM_LISTS; i++){
-        subList[i] = NULL;
-    }
-    while (headPtr != NULL) {
-	elementPtr = headPtr;
-	headPtr = headPtr->nextPtr;
-	elementPtr->nextPtr = 0;
-	for (i = 0; (i < NUM_LISTS) && (subList[i] != NULL); i++){
-	    elementPtr = MergeLists(subList[i], elementPtr, infoPtr);
-	    subList[i] = NULL;
-	}
-	if (i >= NUM_LISTS) {
-	    i = NUM_LISTS-1;
+    /*
+     * Now store the sorted elements in the result list.
+     */
+    
+    if (sortInfo.resultCode == TCL_OK) {
+	List *listRepPtr;
+	Tcl_Obj **newArray, *objPtr;
+	int i;
+	
+	resultPtr = Tcl_NewListObj(sortInfo.numElements, NULL);
+	listRepPtr = ListRepPtr(resultPtr);
+	newArray = &listRepPtr->elements;
+	if (indices) {
+	    for (i = 0; elementPtr != NULL ; elementPtr = elementPtr->nextPtr){
+		objPtr = Tcl_NewIntObj(PTR2INT(elementPtr->objPtr));
+		newArray[i++] = objPtr;
+		Tcl_IncrRefCount(objPtr);
+	    }
+	} else {
+	    for (i = 0; elementPtr != NULL ; elementPtr = elementPtr->nextPtr){
+		objPtr = elementPtr->objPtr;
+		newArray[i++] = objPtr;
+		Tcl_IncrRefCount(objPtr);
+	    }
 	}
-	subList[i] = elementPtr;
+	listRepPtr->elemCount = i;
+	Tcl_SetObjResult(interp, resultPtr);
     }
-    elementPtr = NULL;
-    for (i = 0; i < NUM_LISTS; i++){
-        elementPtr = MergeLists(subList[i], elementPtr, infoPtr);
+
+  done1:
+    ckfree((char *)elementArray);
+
+  done:
+    if (sortInfo.sortMode == SORTMODE_COMMAND) {
+	TclDecrRefCount(sortInfo.compareCmdPtr);
+	TclDecrRefCount(listObj);
+	sortInfo.compareCmdPtr = NULL;
+    }
+    if (sortInfo.indexc > 1) {
+	ckfree((char *) sortInfo.indexv);
     }
-    return elementPtr;
+    return sortInfo.resultCode;
 }
 
 /*
@@ -3926,65 +3810,91 @@ MergeSort(headPtr, infoPtr)
  *	into a single sorted list.
  *
  * Results:
- *      The unified list of SortElement structures.
+ *	The unified list of SortElement structures.
  *
  * Side effects:
- *	None, unless a user-defined comparison command does something
- *	weird.
- *
+ *      If infoPtr->unique is set then infoPtr->numElements may be updated.
+ *	Possibly others, if a user-defined comparison command does something
+ *      weird. 
+ *
+ * Note:
+ *      If infoPtr->unique is set, the merge assumes that there are no
+ *	"repeated" elements in each of the left and right lists. In that case,
+ *	if any element of the left list is equivalent to one in the right list
+ *	it is omitted from the merged list.
+ *      This simplified mechanism works because of the special way
+ *	our MergeSort creates the sublists to be merged and will fail to
+ *	eliminate all repeats in the general case where they are already
+ *	present in either the left or right list. A general code would need to
+ *	skip adjacent initial repeats in the left and right lists before
+ *	comparing their initial elements, at each step. 
  *----------------------------------------------------------------------
  */
 
 static SortElement *
-MergeLists(leftPtr, rightPtr, infoPtr)
-    SortElement *leftPtr;               /* First list to be merged; may be
-					 * NULL. */
-    SortElement *rightPtr;              /* Second list to be merged; may be
-					 * NULL. */
-    SortInfo *infoPtr;                  /* Information needed by the
-                                         * comparison operator. */
+MergeLists(
+    SortElement *leftPtr,	/* First list to be merged; may be NULL. */
+    SortElement *rightPtr,	/* Second list to be merged; may be NULL. */
+    SortInfo *infoPtr)		/* Information needed by the comparison
+				 * operator. */
 {
-    SortElement *headPtr;
-    SortElement *tailPtr;
+    SortElement *headPtr, *tailPtr;
     int cmp;
 
     if (leftPtr == NULL) {
-        return rightPtr;
+	return rightPtr;
     }
     if (rightPtr == NULL) {
-        return leftPtr;
+	return leftPtr;
     }
-    cmp = SortCompare(leftPtr->objPtr, rightPtr->objPtr, infoPtr);
-    if (cmp > 0) {
+    cmp = SortCompare(leftPtr, rightPtr, infoPtr);
+    if (cmp > 0 || (cmp == 0 && infoPtr->unique)) {
+	if (cmp == 0) {
+	    infoPtr->numElements--;
+	    leftPtr = leftPtr->nextPtr;
+	}
 	tailPtr = rightPtr;
 	rightPtr = rightPtr->nextPtr;
     } else {
-	if (cmp == 0) {
-	    leftPtr->count++;
-	}
 	tailPtr = leftPtr;
 	leftPtr = leftPtr->nextPtr;
     }
     headPtr = tailPtr;
-    while ((leftPtr != NULL) && (rightPtr != NULL)) {
-	cmp = SortCompare(leftPtr->objPtr, rightPtr->objPtr, infoPtr);
-	if (cmp > 0) {
-	    tailPtr->nextPtr = rightPtr;
-	    tailPtr = rightPtr;
-	    rightPtr = rightPtr->nextPtr;
-	} else {
-	    if (cmp == 0) {
-		leftPtr->count++;
+    if (!infoPtr->unique) {
+	while ((leftPtr != NULL) && (rightPtr != NULL)) {
+	    cmp = SortCompare(leftPtr, rightPtr, infoPtr);
+	    if (cmp > 0) {
+		tailPtr->nextPtr = rightPtr;
+		tailPtr = rightPtr;
+		rightPtr = rightPtr->nextPtr;
+	    } else {
+		tailPtr->nextPtr = leftPtr;
+		tailPtr = leftPtr;
+		leftPtr = leftPtr->nextPtr;
+	    }
+	}
+    } else {
+	while ((leftPtr != NULL) && (rightPtr != NULL)) {
+	    cmp = SortCompare(leftPtr, rightPtr, infoPtr);
+	    if (cmp >= 0) {
+		if (cmp == 0) {
+		    infoPtr->numElements--;
+		    leftPtr = leftPtr->nextPtr;
+		}
+		tailPtr->nextPtr = rightPtr;
+		tailPtr = rightPtr;
+		rightPtr = rightPtr->nextPtr;
+	    } else {
+		tailPtr->nextPtr = leftPtr;
+		tailPtr = leftPtr;
+		leftPtr = leftPtr->nextPtr;
 	    }
-	    tailPtr->nextPtr = leftPtr;
-	    tailPtr = leftPtr;
-	    leftPtr = leftPtr->nextPtr;
 	}
     }
     if (leftPtr != NULL) {
-       tailPtr->nextPtr = leftPtr;
+	tailPtr->nextPtr = leftPtr;
     } else {
-       tailPtr->nextPtr = rightPtr;
+	tailPtr->nextPtr = rightPtr;
     }
     return headPtr;
 }
@@ -3998,163 +3908,98 @@ MergeLists(leftPtr, rightPtr, infoPtr)
  *	ordering between two elements.
  *
  * Results:
- *      A negative results means the the first element comes before the
- *      second, and a positive results means that the second element
- *      should come first.  A result of zero means the two elements
- *      are equal and it doesn't matter which comes first.
+ *	A negative results means the the first element comes before the
+ *	second, and a positive results means that the second element should
+ *	come first. A result of zero means the two elements are equal and it
+ *	doesn't matter which comes first.
  *
  * Side effects:
- *	None, unless a user-defined comparison command does something
- *	weird.
+ *	None, unless a user-defined comparison command does something weird.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SortCompare(objPtr1, objPtr2, infoPtr)
-    Tcl_Obj *objPtr1, *objPtr2;		/* Values to be compared. */
-    SortInfo *infoPtr;                  /* Information passed from the
-                                         * top-level "lsort" command */
+SortCompare(
+    SortElement *elemPtr1, SortElement *elemPtr2,
+				/* Values to be compared. */
+    SortInfo *infoPtr)		/* Information passed from the top-level
+				 * "lsort" command. */
 {
-    int order, listLen, index;
-    Tcl_Obj *objPtr;
-    char buffer[TCL_INTEGER_SPACE];
-
-    order = 0;
-    if (infoPtr->resultCode != TCL_OK) {
-	/*
-	 * Once an error has occurred, skip any future comparisons
-	 * so as to preserve the error message in sortInterp->result.
-	 */
-
-	return order;
-    }
-    if (infoPtr->index != SORTIDX_NONE) {
-	/*
-	 * The "-index" option was specified.  Treat each object as a
-	 * list, extract the requested element from each list, and
-	 * compare the elements, not the lists.  "end"-relative indices
-	 * are signaled here with large negative values.
-	 */
-
-	if (Tcl_ListObjLength(infoPtr->interp, objPtr1, &listLen) != TCL_OK) {
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	if (infoPtr->index < SORTIDX_NONE) {
-	    index = listLen + infoPtr->index + 1;
-	} else {
-	    index = infoPtr->index;
-	}
+    int order = 0;
 
-	if (Tcl_ListObjIndex(infoPtr->interp, objPtr1, index, &objPtr)
-		!= TCL_OK) {
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	if (objPtr == NULL) {
-	    objPtr = objPtr1;
-	    missingElement:
-	    TclFormatInt(buffer, infoPtr->index);
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(infoPtr->interp),
-			"element ", buffer, " missing from sublist \"",
-			Tcl_GetString(objPtr), "\"", (char *) NULL);
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	objPtr1 = objPtr;
-
-	if (Tcl_ListObjLength(infoPtr->interp, objPtr2, &listLen) != TCL_OK) {
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	if (infoPtr->index < SORTIDX_NONE) {
-	    index = listLen + infoPtr->index + 1;
-	} else {
-	    index = infoPtr->index;
-	}
-
-	if (Tcl_ListObjIndex(infoPtr->interp, objPtr2, index, &objPtr)
-		!= TCL_OK) {
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	if (objPtr == NULL) {
-	    objPtr = objPtr2;
-	    goto missingElement;
-	}
-	objPtr2 = objPtr;
-    }
     if (infoPtr->sortMode == SORTMODE_ASCII) {
-	order = strcmp(Tcl_GetString(objPtr1), Tcl_GetString(objPtr2));
+	order = strcmp(elemPtr1->index.strValuePtr,
+		elemPtr2->index.strValuePtr);
+    } else if (infoPtr->sortMode == SORTMODE_ASCII_NC) {
+	order = strcasecmp(elemPtr1->index.strValuePtr,
+		elemPtr2->index.strValuePtr);
     } else if (infoPtr->sortMode == SORTMODE_DICTIONARY) {
-	order = DictionaryCompare(
-		Tcl_GetString(objPtr1),	Tcl_GetString(objPtr2));
+	order = DictionaryCompare(elemPtr1->index.strValuePtr,
+		elemPtr2->index.strValuePtr);
     } else if (infoPtr->sortMode == SORTMODE_INTEGER) {
 	long a, b;
 
-	if ((Tcl_GetLongFromObj(infoPtr->interp, objPtr1, &a) != TCL_OK)
-		|| (Tcl_GetLongFromObj(infoPtr->interp, objPtr2, &b)
-		!= TCL_OK)) {
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	if (a > b) {
-	    order = 1;
-	} else if (b > a) {
-	    order = -1;
-	}
+	a = elemPtr1->index.intValue;
+	b = elemPtr2->index.intValue;
+	order = ((a >= b) - (a <= b));
     } else if (infoPtr->sortMode == SORTMODE_REAL) {
 	double a, b;
 
-	if ((Tcl_GetDoubleFromObj(infoPtr->interp, objPtr1, &a) != TCL_OK)
-	      || (Tcl_GetDoubleFromObj(infoPtr->interp, objPtr2, &b)
-		      != TCL_OK)) {
-	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
-	}
-	if (a > b) {
-	    order = 1;
-	} else if (b > a) {
-	    order = -1;
-	}
+	a = elemPtr1->index.doubleValue;
+	b = elemPtr2->index.doubleValue;
+	order = ((a >= b) - (a <= b));
     } else {
 	Tcl_Obj **objv, *paramObjv[2];
 	int objc;
+	Tcl_Obj *objPtr1, *objPtr2;
+
+	if (infoPtr->resultCode != TCL_OK) {
+	    /*
+	     * Once an error has occurred, skip any future comparisons so as
+	     * to preserve the error message in sortInterp->result.
+	     */
+	    
+	    return 0;
+	}
+
 
+	objPtr1 = elemPtr1->index.objValuePtr;
+	objPtr2 = elemPtr2->index.objValuePtr;
+	
 	paramObjv[0] = objPtr1;
 	paramObjv[1] = objPtr2;
 
-  	/*
- 	 * We made space in the command list for the two things to
-	 * compare. Replace them and evaluate the result.
+	/*
+	 * We made space in the command list for the two things to compare.
+	 * Replace them and evaluate the result.
 	 */
 
-	Tcl_ListObjLength(infoPtr->interp, infoPtr->compareCmdPtr, &objc);
+	TclListObjLength(infoPtr->interp, infoPtr->compareCmdPtr, &objc);
 	Tcl_ListObjReplace(infoPtr->interp, infoPtr->compareCmdPtr, objc - 2,
 		2, 2, paramObjv);
-   	Tcl_ListObjGetElements(infoPtr->interp, infoPtr->compareCmdPtr,
+	TclListObjGetElements(infoPtr->interp, infoPtr->compareCmdPtr,
 		&objc, &objv);
 
 	infoPtr->resultCode = Tcl_EvalObjv(infoPtr->interp, objc, objv, 0);
-  
-  	if (infoPtr->resultCode != TCL_OK) {
+
+	if (infoPtr->resultCode != TCL_OK) {
 	    Tcl_AddErrorInfo(infoPtr->interp,
 		    "\n    (-compare command)");
-	    return order;
+	    return 0;
 	}
 
 	/*
 	 * Parse the result of the command.
 	 */
 
-	if (Tcl_GetIntFromObj(infoPtr->interp,
+	if (TclGetIntFromObj(infoPtr->interp,
 		Tcl_GetObjResult(infoPtr->interp), &order) != TCL_OK) {
 	    Tcl_ResetResult(infoPtr->interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(infoPtr->interp),
-		    "-compare command returned non-integer result", -1);
+	    Tcl_AppendResult(infoPtr->interp,
+		    "-compare command returned non-integer result", NULL);
 	    infoPtr->resultCode = TCL_ERROR;
-	    return order;
+	    return 0;
 	}
     }
     if (!infoPtr->isIncreasing) {
@@ -4168,18 +4013,18 @@ SortCompare(objPtr1, objPtr2, infoPtr)
  *
  * DictionaryCompare
  *
- *	This function compares two strings as if they were being used in
- *	an index or card catalog.  The case of alphabetic characters is
- *	ignored, except to break ties.  Thus "B" comes before "b" but
- *	after "a".  Also, integers embedded in the strings compare in
- *	numerical order.  In other words, "x10y" comes after "x9y", not
- *      before it as it would when using strcmp().
+ *	This function compares two strings as if they were being used in an
+ *	index or card catalog. The case of alphabetic characters is ignored,
+ *	except to break ties. Thus "B" comes before "b" but after "a". Also,
+ *	integers embedded in the strings compare in numerical order. In other
+ *	words, "x10y" comes after "x9y", not * before it as it would when
+ *	using strcmp().
  *
  * Results:
- *      A negative result means that the first element comes before the
- *      second, and a positive result means that the second element
- *      should come first.  A result of zero means the two elements
- *      are equal and it doesn't matter which comes first.
+ *	A negative result means that the first element comes before the
+ *	second, and a positive result means that the second element should
+ *	come first. A result of zero means the two elements are equal and it
+ *	doesn't matter which comes first.
  *
  * Side effects:
  *	None.
@@ -4188,22 +4033,21 @@ SortCompare(objPtr1, objPtr2, infoPtr)
  */
 
 static int
-DictionaryCompare(left, right)
-    char *left, *right;          /* The strings to compare */
+DictionaryCompare(
+    char *left, char *right)	/* The strings to compare. */
 {
     Tcl_UniChar uniLeft, uniRight, uniLeftLower, uniRightLower;
     int diff, zeros;
     int secondaryDiff = 0;
 
     while (1) {
-	if (isdigit(UCHAR(*right)) /* INTL: digit */
-		&& isdigit(UCHAR(*left))) { /* INTL: digit */
+	if (isdigit(UCHAR(*right))		/* INTL: digit */
+		&& isdigit(UCHAR(*left))) {	/* INTL: digit */
 	    /*
-	     * There are decimal numbers embedded in the two
-	     * strings.  Compare them as numbers, rather than
-	     * strings.  If one number has more leading zeros than
-	     * the other, the number with more leading zeros sorts
-	     * later, but only as a secondary choice.
+	     * There are decimal numbers embedded in the two strings. Compare
+	     * them as numbers, rather than strings. If one number has more
+	     * leading zeros than the other, the number with more leading
+	     * zeros sorts later, but only as a secondary choice.
 	     */
 
 	    zeros = 0;
@@ -4220,10 +4064,10 @@ DictionaryCompare(left, right)
 	    }
 
 	    /*
-	     * The code below compares the numbers in the two
-	     * strings without ever converting them to integers.  It
-	     * does this by first comparing the lengths of the
-	     * numbers and then comparing the digit values.
+	     * The code below compares the numbers in the two strings without
+	     * ever converting them to integers. It does this by first
+	     * comparing the lengths of the numbers and then comparing the
+	     * digit values.
 	     */
 
 	    diff = 0;
@@ -4233,13 +4077,13 @@ DictionaryCompare(left, right)
 		}
 		right++;
 		left++;
-		if (!isdigit(UCHAR(*right))) { /* INTL: digit */
-		    if (isdigit(UCHAR(*left))) { /* INTL: digit */
+		if (!isdigit(UCHAR(*right))) {		/* INTL: digit */
+		    if (isdigit(UCHAR(*left))) {	/* INTL: digit */
 			return 1;
 		    } else {
 			/*
-			 * The two numbers have the same length. See
-			 * if their values are different.
+			 * The two numbers have the same length. See if their
+			 * values are different.
 			 */
 
 			if (diff != 0) {
@@ -4247,7 +4091,7 @@ DictionaryCompare(left, right)
 			}
 			break;
 		    }
-		} else if (!isdigit(UCHAR(*left))) { /* INTL: digit */
+		} else if (!isdigit(UCHAR(*left))) {	/* INTL: digit */
 		    return -1;
 		}
 	    }
@@ -4255,7 +4099,7 @@ DictionaryCompare(left, right)
 	}
 
 	/*
-	 * Convert character to Unicode for comparison purposes.  If either
+	 * Convert character to Unicode for comparison purposes. If either
 	 * string is at the terminating null, do a byte-wise comparison and
 	 * bail out immediately.
 	 */
@@ -4263,12 +4107,14 @@ DictionaryCompare(left, right)
 	if ((*left != '\0') && (*right != '\0')) {
 	    left += Tcl_UtfToUniChar(left, &uniLeft);
 	    right += Tcl_UtfToUniChar(right, &uniRight);
+
 	    /*
 	     * Convert both chars to lower for the comparison, because
-	     * dictionary sorts are case insensitve.  Covert to lower, not
+	     * dictionary sorts are case insensitve. Covert to lower, not
 	     * upper, so chars between Z and a will sort before A (where most
-	     * other interesting punctuations occur)
+	     * other interesting punctuations occur).
 	     */
+
 	    uniLeftLower = Tcl_UniCharToLower(uniLeft);
 	    uniRightLower = Tcl_UniCharToLower(uniRight);
 	} else {
@@ -4276,18 +4122,18 @@ DictionaryCompare(left, right)
 	    break;
 	}
 
-        diff = uniLeftLower - uniRightLower;
-        if (diff) {
+	diff = uniLeftLower - uniRightLower;
+	if (diff) {
 	    return diff;
-	} else if (secondaryDiff == 0) {
-	    if (Tcl_UniCharIsUpper(uniLeft) &&
-		    Tcl_UniCharIsLower(uniRight)) {
+	}
+	if (secondaryDiff == 0) {
+	    if (Tcl_UniCharIsUpper(uniLeft) && Tcl_UniCharIsLower(uniRight)) {
 		secondaryDiff = -1;
 	    } else if (Tcl_UniCharIsUpper(uniRight)
 		    && Tcl_UniCharIsLower(uniLeft)) {
 		secondaryDiff = 1;
 	    }
-        }
+	}
     }
     if (diff == 0) {
 	diff = secondaryDiff;
@@ -4296,10 +4142,90 @@ DictionaryCompare(left, right)
 }
 
 /*
+ *----------------------------------------------------------------------
+ *
+ * SelectObjFromSublist --
+ *
+ *	This procedure is invoked from lsearch and SortCompare. It is used for
+ *	implementing the -index option, for the lsort and lsearch commands.
+ *
+ * Results:
+ *	Returns NULL if a failure occurs, and sets the result in the infoPtr.
+ *	Otherwise returns the Tcl_Obj* to the item.
+ *
+ * Side effects:
+ *	None.
+ *
+ * Note:
+ *	No reference counting is done, as the result is only used internally
+ *	and never passed directly to user code.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+SelectObjFromSublist(
+    Tcl_Obj *objPtr,		/* Obj to select sublist from. */
+    SortInfo *infoPtr)		/* Information passed from the top-level
+				 * "lsearch" or "lsort" command. */
+{
+    int i;
+
+    /*
+     * Quick check for case when no "-index" option is there.
+     */
+
+    if (infoPtr->indexc == 0) {
+	return objPtr;
+    }
+
+    /*
+     * Iterate over the indices, traversing through the nested sublists as we
+     * go.
+     */
+
+    for (i=0 ; i<infoPtr->indexc ; i++) {
+	int listLen, index;
+	Tcl_Obj *currentObj;
+
+	if (TclListObjLength(infoPtr->interp, objPtr, &listLen) != TCL_OK) {
+	    infoPtr->resultCode = TCL_ERROR;
+	    return NULL;
+	}
+	index = infoPtr->indexv[i];
+
+	/*
+	 * Adjust for end-based indexing.
+	 */
+
+	if (index < SORTIDX_NONE) {
+	    index += listLen + 1;
+	}
+
+	if (Tcl_ListObjIndex(infoPtr->interp, objPtr, index,
+		&currentObj) != TCL_OK) {
+	    infoPtr->resultCode = TCL_ERROR;
+	    return NULL;
+	}
+	if (currentObj == NULL) {
+	    char buffer[TCL_INTEGER_SPACE];
+
+	    TclFormatInt(buffer, index);
+	    Tcl_AppendResult(infoPtr->interp, "element ", buffer,
+		    " missing from sublist \"", TclGetString(objPtr), "\"",
+		    NULL);
+	    infoPtr->resultCode = TCL_ERROR;
+	    return NULL;
+	}
+	objPtr = currentObj;
+    }
+    return objPtr;
+}
+
+/*
  * Local Variables:
  * mode: c
  * c-basic-offset: 4
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c
index 4ada397..0ad77aa 100644
--- a/generic/tclCmdMZ.c
+++ b/generic/tclCmdMZ.c
@@ -1,153 +1,34 @@
-/* 
+/*
  * tclCmdMZ.c --
  *
- *	This file contains the top-level command routines for most of
- *	the Tcl built-in commands whose names begin with the letters
- *	M to Z.  It contains only commands in the generic core (i.e.
- *	those that don't depend much upon UNIX facilities).
+ *	This file contains the top-level command routines for most of the Tcl
+ *	built-in commands whose names begin with the letters M to Z. It
+ *	contains only commands in the generic core (i.e. those that don't
+ *	depend much upon UNIX facilities).
  *
  * Copyright (c) 1987-1993 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-2000 Scriptics Corporation.
  * Copyright (c) 2002 ActiveState Corporation.
+ * Copyright (c) 2003 Donal K. Fellows.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 #include "tclRegexp.h"
-#include "tclCompile.h"
-
-/*
- * Structures used to hold information about variable traces:
- */
-
-typedef struct {
-    int flags;			/* Operations for which Tcl command is
-				 * to be invoked. */
-    size_t length;		/* Number of non-NULL chars. in command. */
-    char command[4];		/* Space for Tcl command to invoke.  Actual
-				 * size will be as large as necessary to
-				 * hold command.  This field must be the
-				 * last in the structure, so that it can
-				 * be larger than 4 bytes. */
-} TraceVarInfo;
-
-typedef struct {
-    VarTrace trace;
-    TraceVarInfo tvar;
-} CompoundVarTrace;
-
-/*
- * Structure used to hold information about command traces:
- */
-
-typedef struct {
-    int flags;			/* Operations for which Tcl command is
-				 * to be invoked. */
-    size_t length;		/* Number of non-NULL chars. in command. */
-    Tcl_Trace stepTrace;        /* Used for execution traces, when tracing
-                                 * inside the given command */
-    int startLevel;             /* Used for bookkeeping with step execution
-                                 * traces, store the level at which the step
-                                 * trace was invoked */
-    char *startCmd;             /* Used for bookkeeping with step execution
-                                 * traces, store the command name which invoked
-                                 * step trace */
-    int curFlags;               /* Trace flags for the current command */
-    int curCode;                /* Return code for the current command */
-    int refCount;               /* Used to ensure this structure is
-                                 * not deleted too early.  Keeps track
-                                 * of how many pieces of code have
-                                 * a pointer to this structure. */
-    char command[4];		/* Space for Tcl command to invoke.  Actual
-				 * size will be as large as necessary to
-				 * hold command.  This field must be the
-				 * last in the structure, so that it can
-				 * be larger than 4 bytes. */
-} TraceCommandInfo;
-
-/* 
- * Used by command execution traces.  Note that we assume in the code
- * that the first two defines are exactly 4 times the
- * 'TCL_TRACE_ENTER_EXEC' and 'TCL_TRACE_LEAVE_EXEC' constants.
- * 
- * TCL_TRACE_ENTER_DURING_EXEC  - Trace each command inside the command
- *                                currently being traced, before execution.
- * TCL_TRACE_LEAVE_DURING_EXEC  - Trace each command inside the command
- *                                currently being traced, after execution.
- * TCL_TRACE_ANY_EXEC           - OR'd combination of all EXEC flags.
- * TCL_TRACE_EXEC_IN_PROGRESS   - The callback procedure on this trace
- *                                is currently executing.  Therefore we
- *                                don't let further traces execute.
- * TCL_TRACE_EXEC_DIRECT        - This execution trace is triggered directly
- *                                by the command being traced, not because
- *                                of an internal trace.
- * The flags 'TCL_TRACE_DESTROYED' and 'TCL_INTERP_DESTROYED' may also
- * be used in command execution traces.
- */
-#define TCL_TRACE_ENTER_DURING_EXEC	4
-#define TCL_TRACE_LEAVE_DURING_EXEC	8
-#define TCL_TRACE_ANY_EXEC              15
-#define TCL_TRACE_EXEC_IN_PROGRESS      0x10
-#define TCL_TRACE_EXEC_DIRECT           0x20
-
-/*
- * Forward declarations for procedures defined in this file:
- */
-
-typedef int (Tcl_TraceTypeObjCmd) _ANSI_ARGS_((Tcl_Interp *interp,
-	int optionIndex, int objc, Tcl_Obj *CONST objv[]));
-
-Tcl_TraceTypeObjCmd TclTraceVariableObjCmd;
-Tcl_TraceTypeObjCmd TclTraceCommandObjCmd;
-Tcl_TraceTypeObjCmd TclTraceExecutionObjCmd;
 
-/* 
- * Each subcommand has a number of 'types' to which it can apply.
- * Currently 'execution', 'command' and 'variable' are the only
- * types supported.  These three arrays MUST be kept in sync!
- * In the future we may provide an API to add to the list of
- * supported trace types.
- */
-static CONST char *traceTypeOptions[] = {
-    "execution", "command", "variable", (char*) NULL
-};
-static Tcl_TraceTypeObjCmd *CONST traceSubCmds[] = {
-    TclTraceExecutionObjCmd,
-    TclTraceCommandObjCmd,
-    TclTraceVariableObjCmd
-};
-
-/*
- * Declarations for local procedures to this file:
- */
-static int              CallTraceProcedure _ANSI_ARGS_((Tcl_Interp *interp,
-                            Trace *tracePtr, Command *cmdPtr,
-                            CONST char *command, int numChars,
-                            int objc, Tcl_Obj *CONST objv[]));
-static char *		TraceVarProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, CONST char *name1, 
-                            CONST char *name2, int flags));
-static void		TraceCommandProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, CONST char *oldName,
-                            CONST char *newName, int flags));
-static Tcl_CmdObjTraceProc TraceExecutionProc;
-
-#ifdef TCL_TIP280
-static void             ListLines _ANSI_ARGS_((Tcl_Obj* listObj, int line,
-					       int n, int* lines,
-					       Tcl_Obj* const* elems));
-#endif
+static int		UniCharIsAscii(int character);
+static int		UniCharIsHexDigit(int character);
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_PwdObjCmd --
  *
- *	This procedure is invoked to process the "pwd" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "pwd" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -158,13 +39,12 @@ static void             ListLines _ANSI_ARGS_((Tcl_Obj* listObj, int line,
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_PwdObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_PwdObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Obj *retVal;
 
@@ -187,8 +67,8 @@ Tcl_PwdObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_RegexpObjCmd --
  *
- *	This procedure is invoked to process the "regexp" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "regexp" Tcl command. See
+ *	the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -199,23 +79,22 @@ Tcl_PwdObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_RegexpObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_RegexpObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int i, indices, match, about, offset, all, doinline, numMatchesSaved;
-    int cflags, eflags, stringLength;
+    int cflags, eflags, stringLength, matchLength;
     Tcl_RegExp regExpr;
-    Tcl_Obj *objPtr, *resultPtr;
+    Tcl_Obj *objPtr, *startIndex = NULL, *resultPtr = NULL;
     Tcl_RegExpInfo info;
-    static CONST char *options[] = {
+    static const char *options[] = {
 	"-all",		"-about",	"-indices",	"-inline",
 	"-expanded",	"-line",	"-linestop",	"-lineanchor",
-	"-nocase",	"-start",	"--",		(char *) NULL
+	"-nocase",	"-start",	"--",		NULL
     };
     enum options {
 	REGEXP_ALL,	REGEXP_ABOUT,	REGEXP_INDICES,	REGEXP_INLINE,
@@ -223,165 +102,180 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 	REGEXP_NOCASE,	REGEXP_START,	REGEXP_LAST
     };
 
-    indices	= 0;
-    about	= 0;
-    cflags	= TCL_REG_ADVANCED;
-    eflags	= 0;
-    offset	= 0;
-    all		= 0;
-    doinline	= 0;
-    
+    indices = 0;
+    about = 0;
+    cflags = TCL_REG_ADVANCED;
+    eflags = 0;
+    offset = 0;
+    all = 0;
+    doinline = 0;
+
     for (i = 1; i < objc; i++) {
 	char *name;
 	int index;
 
-	name = Tcl_GetString(objv[i]);
+	name = TclGetString(objv[i]);
 	if (name[0] != '-') {
 	    break;
 	}
 	if (Tcl_GetIndexFromObj(interp, objv[i], options, "switch", TCL_EXACT,
 		&index) != TCL_OK) {
-	    return TCL_ERROR;
+	    goto optionError;
 	}
 	switch ((enum options) index) {
-	    case REGEXP_ALL: {
-		all = 1;
-		break;
-	    }
-	    case REGEXP_INDICES: {
-		indices = 1;
-		break;
-	    }
-	    case REGEXP_INLINE: {
-		doinline = 1;
-		break;
-	    }
-	    case REGEXP_NOCASE: {
-		cflags |= TCL_REG_NOCASE;
-		break;
-	    }
-	    case REGEXP_ABOUT: {
-		about = 1;
-		break;
-	    }
-	    case REGEXP_EXPANDED: {
-		cflags |= TCL_REG_EXPANDED;
-		break;
-	    }
-	    case REGEXP_LINE: {
-		cflags |= TCL_REG_NEWLINE;
-		break;
-	    }
-	    case REGEXP_LINESTOP: {
-		cflags |= TCL_REG_NLSTOP;
-		break;
-	    }
-	    case REGEXP_LINEANCHOR: {
-		cflags |= TCL_REG_NLANCH;
-		break;
+	case REGEXP_ALL:
+	    all = 1;
+	    break;
+	case REGEXP_INDICES:
+	    indices = 1;
+	    break;
+	case REGEXP_INLINE:
+	    doinline = 1;
+	    break;
+	case REGEXP_NOCASE:
+	    cflags |= TCL_REG_NOCASE;
+	    break;
+	case REGEXP_ABOUT:
+	    about = 1;
+	    break;
+	case REGEXP_EXPANDED:
+	    cflags |= TCL_REG_EXPANDED;
+	    break;
+	case REGEXP_LINE:
+	    cflags |= TCL_REG_NEWLINE;
+	    break;
+	case REGEXP_LINESTOP:
+	    cflags |= TCL_REG_NLSTOP;
+	    break;
+	case REGEXP_LINEANCHOR:
+	    cflags |= TCL_REG_NLANCH;
+	    break;
+	case REGEXP_START: {
+	    int temp;
+	    if (++i >= objc) {
+		goto endOfForLoop;
 	    }
-	    case REGEXP_START: {
-		if (++i >= objc) {
-		    goto endOfForLoop;
-		}
-		if (Tcl_GetIntFromObj(interp, objv[i], &offset) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (offset < 0) {
-		    offset = 0;
-		}
-		break;
+	    if (TclGetIntForIndexM(interp, objv[i], 0, &temp) != TCL_OK) {
+		goto optionError;
 	    }
-	    case REGEXP_LAST: {
-		i++;
-		goto endOfForLoop;
+	    if (startIndex) {
+		Tcl_DecrRefCount(startIndex);
 	    }
+	    startIndex = objv[i];
+	    Tcl_IncrRefCount(startIndex);
+	    break;
+	}
+	case REGEXP_LAST:
+	    i++;
+	    goto endOfForLoop;
 	}
     }
 
-    endOfForLoop:
+  endOfForLoop:
     if ((objc - i) < (2 - about)) {
-	Tcl_WrongNumArgs(interp, 1, objv, 
-	  "?switches? exp string ?matchVar? ?subMatchVar subMatchVar ...?");
-	return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv,
+	    "?switches? exp string ?matchVar? ?subMatchVar subMatchVar ...?");
+	goto optionError;
     }
     objc -= i;
     objv += i;
 
+    /*
+     * Check if the user requested -inline, but specified match variables; a
+     * no-no.
+     */
+
     if (doinline && ((objc - 2) != 0)) {
-	/*
-	 * User requested -inline, but specified match variables - a no-no.
-	 */
-	Tcl_AppendResult(interp, "regexp match variables not allowed",
-		" when using -inline", (char *) NULL);
-	return TCL_ERROR;
+	Tcl_AppendResult(interp, "regexp match variables not allowed"
+		" when using -inline", NULL);
+	goto optionError;
     }
 
     /*
      * Handle the odd about case separately.
      */
+
     if (about) {
 	regExpr = Tcl_GetRegExpFromObj(interp, objv[0], cflags);
 	if ((regExpr == NULL) || (TclRegAbout(interp, regExpr) < 0)) {
+	optionError:
+	    if (startIndex) {
+		Tcl_DecrRefCount(startIndex);
+	    }
 	    return TCL_ERROR;
 	}
 	return TCL_OK;
     }
 
     /*
-     * Get the length of the string that we are matching against so
-     * we can do the termination test for -all matches.  Do this before
-     * getting the regexp to avoid shimmering problems.
+     * Get the length of the string that we are matching against so we can do
+     * the termination test for -all matches. Do this before getting the
+     * regexp to avoid shimmering problems.
      */
+
     objPtr = objv[1];
     stringLength = Tcl_GetCharLength(objPtr);
 
+    if (startIndex) {
+	TclGetIntForIndexM(NULL, startIndex, stringLength, &offset);
+	Tcl_DecrRefCount(startIndex);
+	if (offset < 0) {
+	    offset = 0;
+	}
+    }
+
     regExpr = Tcl_GetRegExpFromObj(interp, objv[0], cflags);
     if (regExpr == NULL) {
 	return TCL_ERROR;
     }
 
-    if (offset > 0) {
-	/*
-	 * Add flag if using offset (string is part of a larger string),
-	 * so that "^" won't match.
-	 */
-	eflags |= TCL_REG_NOTBOL;
-    }
-
     objc -= 2;
     objv += 2;
-    resultPtr = Tcl_GetObjResult(interp);
 
     if (doinline) {
 	/*
 	 * Save all the subexpressions, as we will return them as a list
 	 */
+
 	numMatchesSaved = -1;
     } else {
 	/*
-	 * Save only enough subexpressions for matches we want to keep,
-	 * expect in the case of -all, where we need to keep at least
-	 * one to know where to move the offset.
+	 * Save only enough subexpressions for matches we want to keep, expect
+	 * in the case of -all, where we need to keep at least one to know
+	 * where to move the offset.
 	 */
+
 	numMatchesSaved = (objc == 0) ? all : objc;
     }
 
     /*
-     * The following loop is to handle multiple matches within the
-     * same source string;  each iteration handles one match.  If "-all"
-     * hasn't been specified then the loop body only gets executed once.
-     * We terminate the loop when the starting offset is past the end of the
-     * string.
+     * The following loop is to handle multiple matches within the same source
+     * string; each iteration handles one match. If "-all" hasn't been
+     * specified then the loop body only gets executed once. We terminate the
+     * loop when the starting offset is past the end of the string.
      */
 
     while (1) {
-	match = Tcl_RegExpExecObj(interp, regExpr, objPtr,
-		offset /* offset */, numMatchesSaved, eflags 
-		| ((offset > 0 && offset < stringLength &&
-		   (Tcl_GetUniChar(objPtr,offset-1) != (Tcl_UniChar)'\n'))
-		   ? TCL_REG_NOTBOL : 0));
+	/*
+	 * Pass either 0 or TCL_REG_NOTBOL in the eflags. Passing
+	 * TCL_REG_NOTBOL indicates that the character at offset should not be
+	 * considered the start of the line. If for example the pattern {^} is
+	 * passed and -start is positive, then the pattern will not match the
+	 * start of the string unless the previous character is a newline.
+	 */
+
+	if (offset == 0) {
+	    eflags = 0;
+	} else if (offset > stringLength) {
+	    eflags = TCL_REG_NOTBOL;
+	} else if (Tcl_GetUniChar(objPtr, offset-1) == (Tcl_UniChar)'\n') {
+	    eflags = 0;
+	} else {
+	    eflags = TCL_REG_NOTBOL;
+	}
 
+	match = Tcl_RegExpExecObj(interp, regExpr, objPtr, offset,
+		numMatchesSaved, eflags);
 	if (match < 0) {
 	    return TCL_ERROR;
 	}
@@ -391,16 +285,16 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 	     * We want to set the value of the intepreter result only when
 	     * this is the first time through the loop.
 	     */
+
 	    if (all <= 1) {
 		/*
-		 * If inlining, set the interpreter's object result to an
-		 * empty list, otherwise set it to an integer object w/
-		 * value 0.
+		 * If inlining, the interpreter's object result remains an
+		 * empty list, otherwise set it to an integer object w/ value
+		 * 0.
 		 */
-		if (doinline) {
-		    Tcl_SetListObj(resultPtr, 0, NULL);
-		} else {
-		    Tcl_SetIntObj(resultPtr, 0);
+
+		if (!doinline) {
+		    Tcl_SetObjResult(interp, Tcl_NewIntObj(0));
 		}
 		return TCL_OK;
 	    }
@@ -408,17 +302,21 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 	}
 
 	/*
-	 * If additional variable names have been specified, return
-	 * index information in those variables.
+	 * If additional variable names have been specified, return index
+	 * information in those variables.
 	 */
 
 	Tcl_RegExpGetInfo(regExpr, &info);
 	if (doinline) {
 	    /*
-	     * It's the number of substitutions, plus one for the matchVar
-	     * at index 0
+	     * It's the number of substitutions, plus one for the matchVar at
+	     * index 0
 	     */
+
 	    objc = info.nsubs + 1;
+	    if (all <= 1) {
+		resultPtr = Tcl_NewObj();
+	    }
 	}
 	for (i = 0; i < objc; i++) {
 	    Tcl_Obj *newPtr;
@@ -428,12 +326,13 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 		Tcl_Obj *objs[2];
 
 		/*
-		 * Only adjust the match area if there was a match for
-		 * that area.  (Scriptics Bug 4391/SF Bug #219232)
+		 * Only adjust the match area if there was a match for that
+		 * area. (Scriptics Bug 4391/SF Bug #219232)
 		 */
+
 		if (i <= info.nsubs && info.matches[i].start >= 0) {
 		    start = offset + info.matches[i].start;
-		    end   = offset + info.matches[i].end;
+		    end = offset + info.matches[i].end;
 
 		    /*
 		     * Adjust index so it refers to the last character in the
@@ -445,7 +344,7 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 		    }
 		} else {
 		    start = -1;
-		    end   = -1;
+		    end = -1;
 		}
 
 		objs[0] = Tcl_NewLongObj(start);
@@ -465,6 +364,7 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 		if (Tcl_ListObjAppendElement(interp, resultPtr, newPtr)
 			!= TCL_OK) {
 		    Tcl_DecrRefCount(newPtr);
+		    Tcl_DecrRefCount(resultPtr);
 		    return TCL_ERROR;
 		}
 	    } else {
@@ -472,8 +372,7 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 		valuePtr = Tcl_ObjSetVar2(interp, objv[i], NULL, newPtr, 0);
 		if (valuePtr == NULL) {
 		    Tcl_AppendResult(interp, "couldn't set variable \"",
-			    Tcl_GetString(objv[i]), "\"", (char *) NULL);
-		    Tcl_DecrRefCount(newPtr);
+			    TclGetString(objv[i]), "\"", NULL);
 		    return TCL_ERROR;
 		}
 	    }
@@ -482,37 +381,44 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
 	if (all == 0) {
 	    break;
 	}
+
+	/*
+	 * Adjust the offset to the character just after the last one in the
+	 * matchVar and increment all to count how many times we are making a
+	 * match. We always increment the offset by at least one to prevent
+	 * endless looping (as in the case: regexp -all {a*} a). Otherwise,
+	 * when we match the NULL string at the end of the input string, we
+	 * will loop indefinately (because the length of the match is 0, so
+	 * offset never changes).
+	 */
+
+	matchLength = info.matches[0].end - info.matches[0].start;
+	offset += info.matches[0].end;
+
 	/*
-	 * Adjust the offset to the character just after the last one
-	 * in the matchVar and increment all to count how many times
-	 * we are making a match.  We always increment the offset by at least
-	 * one to prevent endless looping (as in the case:
-	 * regexp -all {a*} a).  Otherwise, when we match the NULL string at
-	 * the end of the input string, we will loop indefinately (because the
-	 * length of the match is 0, so offset never changes).
+	 * A match of length zero could happen for {^} {$} or {.*} and in
+	 * these cases we always want to bump the index up one.
 	 */
-	if (info.matches[0].end == 0) {
+
+	if (matchLength == 0) {
 	    offset++;
 	}
-	offset += info.matches[0].end;
 	all++;
-	eflags |= TCL_REG_NOTBOL;
 	if (offset >= stringLength) {
 	    break;
 	}
     }
 
     /*
-     * Set the interpreter's object result to an integer object
-     * with value 1 if -all wasn't specified, otherwise it's all-1
-     * (the number of times through the while - 1).
-     * Get the resultPtr again as the Tcl_ObjSetVar2 above may have
-     * cause the result to change. [Patch #558324] (watson).
+     * Set the interpreter's object result to an integer object with value 1
+     * if -all wasn't specified, otherwise it's all-1 (the number of times
+     * through the while - 1).
      */
 
-    if (!doinline) {
-	resultPtr = Tcl_GetObjResult(interp);
-	Tcl_SetIntObj(resultPtr, (all ? all-1 : 1));
+    if (doinline) {
+	Tcl_SetObjResult(interp, resultPtr);
+    } else {
+	Tcl_SetObjResult(interp, Tcl_NewIntObj(all ? all-1 : 1));
     }
     return TCL_OK;
 }
@@ -522,8 +428,8 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_RegsubObjCmd --
  *
- *	This procedure is invoked to process the "regsub" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "regsub" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -534,22 +440,21 @@ Tcl_RegexpObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_RegsubObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_RegsubObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int idx, result, cflags, all, wlen, wsublen, numMatches, offset;
     int start, end, subStart, subEnd, match;
     Tcl_RegExp regExpr;
     Tcl_RegExpInfo info;
-    Tcl_Obj *resultPtr, *subPtr, *objPtr;
+    Tcl_Obj *resultPtr, *subPtr, *objPtr, *startIndex = NULL;
     Tcl_UniChar ch, *wsrc, *wfirstChar, *wstring, *wsubspec, *wend;
 
-    static CONST char *options[] = {
+    static const char *options[] = {
 	"-all",		"-nocase",	"-expanded",
 	"-line",	"-linestop",	"-lineanchor",	"-start",
 	"--",		NULL
@@ -568,95 +473,107 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
     for (idx = 1; idx < objc; idx++) {
 	char *name;
 	int index;
-	
-	name = Tcl_GetString(objv[idx]);
+
+	name = TclGetString(objv[idx]);
 	if (name[0] != '-') {
 	    break;
 	}
 	if (Tcl_GetIndexFromObj(interp, objv[idx], options, "switch",
 		TCL_EXACT, &index) != TCL_OK) {
-	    return TCL_ERROR;
+	    goto optionError;
 	}
 	switch ((enum options) index) {
-	    case REGSUB_ALL: {
-		all = 1;
-		break;
-	    }
-	    case REGSUB_NOCASE: {
-		cflags |= TCL_REG_NOCASE;
-		break;
-	    }
-	    case REGSUB_EXPANDED: {
-		cflags |= TCL_REG_EXPANDED;
-		break;
-	    }
-	    case REGSUB_LINE: {
-		cflags |= TCL_REG_NEWLINE;
-		break;
-	    }
-	    case REGSUB_LINESTOP: {
-		cflags |= TCL_REG_NLSTOP;
-		break;
-	    }
-	    case REGSUB_LINEANCHOR: {
-		cflags |= TCL_REG_NLANCH;
-		break;
+	case REGSUB_ALL:
+	    all = 1;
+	    break;
+	case REGSUB_NOCASE:
+	    cflags |= TCL_REG_NOCASE;
+	    break;
+	case REGSUB_EXPANDED:
+	    cflags |= TCL_REG_EXPANDED;
+	    break;
+	case REGSUB_LINE:
+	    cflags |= TCL_REG_NEWLINE;
+	    break;
+	case REGSUB_LINESTOP:
+	    cflags |= TCL_REG_NLSTOP;
+	    break;
+	case REGSUB_LINEANCHOR:
+	    cflags |= TCL_REG_NLANCH;
+	    break;
+	case REGSUB_START: {
+	    int temp;
+	    if (++idx >= objc) {
+		goto endOfForLoop;
 	    }
-	    case REGSUB_START: {
-		if (++idx >= objc) {
-		    goto endOfForLoop;
-		}
-		if (Tcl_GetIntFromObj(interp, objv[idx], &offset) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (offset < 0) {
-		    offset = 0;
-		}
-		break;
+	    if (TclGetIntForIndexM(interp, objv[idx], 0, &temp) != TCL_OK) {
+		goto optionError;
 	    }
-	    case REGSUB_LAST: {
-		idx++;
-		goto endOfForLoop;
+	    if (startIndex) {
+		Tcl_DecrRefCount(startIndex);
 	    }
+	    startIndex = objv[idx];
+	    Tcl_IncrRefCount(startIndex);
+	    break;
+	}
+	case REGSUB_LAST:
+	    idx++;
+	    goto endOfForLoop;
 	}
     }
-    endOfForLoop:
+
+  endOfForLoop:
     if (objc-idx < 3 || objc-idx > 4) {
 	Tcl_WrongNumArgs(interp, 1, objv,
 		"?switches? exp string subSpec ?varName?");
+    optionError:
+	if (startIndex) {
+	    Tcl_DecrRefCount(startIndex);
+	}
 	return TCL_ERROR;
     }
 
     objc -= idx;
     objv += idx;
 
+    if (startIndex) {
+	int stringLength = Tcl_GetCharLength(objv[1]);
+
+	TclGetIntForIndexM(NULL, startIndex, stringLength, &offset);
+	Tcl_DecrRefCount(startIndex);
+	if (offset < 0) {
+	    offset = 0;
+	}
+    }
+
     if (all && (offset == 0)
-	    && (strpbrk(Tcl_GetString(objv[2]), "&\\") == NULL)
-	    && (strpbrk(Tcl_GetString(objv[0]), "*+?{}()[].\\|^$") == NULL)) {
+	    && (strpbrk(TclGetString(objv[2]), "&\\") == NULL)
+	    && (strpbrk(TclGetString(objv[0]), "*+?{}()[].\\|^$") == NULL)) {
 	/*
-	 * This is a simple one pair string map situation.  We make use of
-	 * a slightly modified version of the one pair STR_MAP code.
+	 * This is a simple one pair string map situation. We make use of a
+	 * slightly modified version of the one pair STR_MAP code.
 	 */
+
 	int slen, nocase;
-	int (*strCmpFn)_ANSI_ARGS_((CONST Tcl_UniChar *, CONST Tcl_UniChar *,
-		unsigned long));
+	int (*strCmpFn)(const Tcl_UniChar*,const Tcl_UniChar*,unsigned long);
 	Tcl_UniChar *p, wsrclc;
 
 	numMatches = 0;
-	nocase     = (cflags & TCL_REG_NOCASE);
-	strCmpFn   = nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp;
+	nocase = (cflags & TCL_REG_NOCASE);
+	strCmpFn = nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp;
 
-	wsrc     = Tcl_GetUnicodeFromObj(objv[0], &slen);
-	wstring  = Tcl_GetUnicodeFromObj(objv[1], &wlen);
+	wsrc = Tcl_GetUnicodeFromObj(objv[0], &slen);
+	wstring = Tcl_GetUnicodeFromObj(objv[1], &wlen);
 	wsubspec = Tcl_GetUnicodeFromObj(objv[2], &wsublen);
-	wend     = wstring + wlen - (slen ? slen - 1 : 0);
-	result   = TCL_OK;
+	wend = wstring + wlen - (slen ? slen - 1 : 0);
+	result = TCL_OK;
 
 	if (slen == 0) {
 	    /*
-	     * regsub behavior for "" matches between each character.
-	     * 'string map' skips the "" case.
+	     * regsub behavior for "" matches between each character. 'string
+	     * map' skips the "" case.
 	     */
+
 	    if (wstring < wend) {
 		resultPtr = Tcl_NewUnicodeObj(wstring, 0);
 		Tcl_IncrRefCount(resultPtr);
@@ -670,10 +587,9 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
 	} else {
 	    wsrclc = Tcl_UniCharToLower(*wsrc);
 	    for (p = wfirstChar = wstring; wstring < wend; wstring++) {
-		if (((*wstring == *wsrc) ||
-			(nocase && (Tcl_UniCharToLower(*wstring) ==
-				wsrclc))) &&
-			((slen == 1) || (strCmpFn(wstring, wsrc,
+		if ((*wstring == *wsrc ||
+			(nocase && Tcl_UniCharToLower(*wstring)==wsrclc)) &&
+			(slen==1 || (strCmpFn(wstring, wsrc,
 				(unsigned long) slen) == 0))) {
 		    if (numMatches == 0) {
 			resultPtr = Tcl_NewUnicodeObj(wstring, 0);
@@ -707,9 +623,9 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Make sure to avoid problems where the objects are shared.  This
-     * can cause RegExpObj <> UnicodeObj shimmering that causes data
-     * corruption.  [Bug #461322]
+     * Make sure to avoid problems where the objects are shared. This can
+     * cause RegExpObj <> UnicodeObj shimmering that causes data corruption.
+     * [Bug #461322]
      */
 
     if (objv[1] == objv[0]) {
@@ -728,27 +644,27 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
     result = TCL_OK;
 
     /*
-     * The following loop is to handle multiple matches within the
-     * same source string;  each iteration handles one match and its
-     * corresponding substitution.  If "-all" hasn't been specified
-     * then the loop body only gets executed once.  We must use
-     * 'offset <= wlen' in particular for the case where the regexp
-     * pattern can match the empty string - this is useful when
-     * doing, say, 'regsub -- ^ $str ...' when $str might be empty.
+     * The following loop is to handle multiple matches within the same source
+     * string; each iteration handles one match and its corresponding
+     * substitution. If "-all" hasn't been specified then the loop body only
+     * gets executed once. We must use 'offset <= wlen' in particular for the
+     * case where the regexp pattern can match the empty string - this is
+     * useful when doing, say, 'regsub -- ^ $str ...' when $str might be
+     * empty.
      */
 
     numMatches = 0;
     for ( ; offset <= wlen; ) {
 
 	/*
-	 * The flags argument is set if string is part of a larger string,
-	 * so that "^" won't match.
+	 * The flags argument is set if string is part of a larger string, so
+	 * that "^" won't match.
 	 */
 
 	match = Tcl_RegExpExecObj(interp, regExpr, objPtr, offset,
 		10 /* matches */, ((offset > 0 &&
-		   (wstring[offset-1] != (Tcl_UniChar)'\n'))
-		   ? TCL_REG_NOTBOL : 0));
+		(wstring[offset-1] != (Tcl_UniChar)'\n'))
+		? TCL_REG_NOTBOL : 0));
 
 	if (match < 0) {
 	    result = TCL_ERROR;
@@ -762,9 +678,10 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
 	    Tcl_IncrRefCount(resultPtr);
 	    if (offset > 0) {
 		/*
-		 * Copy the initial portion of the string in if an offset
-		 * was specified.
+		 * Copy the initial portion of the string in if an offset was
+		 * specified.
 		 */
+
 		Tcl_AppendUnicodeToObj(resultPtr, wstring, offset);
 	    }
 	}
@@ -782,7 +699,7 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
 
 	/*
 	 * Append the subSpec argument to the variable, making appropriate
-	 * substitutions.  This code is a bit hairy because of the backslash
+	 * substitutions. This code is a bit hairy because of the backslash
 	 * conventions and because the code saves up ranges of characters in
 	 * subSpec to reduce the number of calls to Tcl_SetVar.
 	 */
@@ -810,10 +727,12 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
 	    } else {
 		continue;
 	    }
+
 	    if (wfirstChar != wsrc) {
 		Tcl_AppendUnicodeToObj(resultPtr, wfirstChar,
 			wsrc - wfirstChar);
 	    }
+
 	    if (idx <= info.nsubs) {
 		subStart = info.matches[idx].start;
 		subEnd = info.matches[idx].end;
@@ -822,18 +741,21 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
 			    wstring + offset + subStart, subEnd - subStart);
 		}
 	    }
+
 	    if (*wsrc == '\\') {
 		wsrc++;
 	    }
 	    wfirstChar = wsrc + 1;
 	}
+
 	if (wfirstChar != wsrc) {
 	    Tcl_AppendUnicodeToObj(resultPtr, wfirstChar, wsrc - wfirstChar);
 	}
+
 	if (end == 0) {
 	    /*
-	     * Always consume at least one character of the input string
-	     * in order to prevent infinite loops.
+	     * Always consume at least one character of the input string in
+	     * order to prevent infinite loops.
 	     */
 
 	    if (offset < wlen) {
@@ -844,10 +766,10 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
 	    offset += end;
 	    if (start == end) {
 		/*
-		 * We matched an empty string, which means we must go 
-		 * forward one more step so we don't match again at the
-		 * same spot.
+		 * We matched an empty string, which means we must go forward
+		 * one more step so we don't match again at the same spot.
 		 */
+
 		if (offset < wlen) {
 		    Tcl_AppendUnicodeToObj(resultPtr, wstring + offset, 1);
 		}
@@ -863,12 +785,14 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
      * Copy the portion of the source string after the last match to the
      * result variable.
      */
-    regsubDone:
+
+  regsubDone:
     if (numMatches == 0) {
 	/*
-	 * On zero matches, just ignore the offset, since it shouldn't
-	 * matter to us in this case, and the user may have skewed it.
+	 * On zero matches, just ignore the offset, since it shouldn't matter
+	 * to us in this case, and the user may have skewed it.
 	 */
+
 	resultPtr = objv[1];
 	Tcl_IncrRefCount(resultPtr);
     } else if (offset < wlen) {
@@ -877,27 +801,34 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
     if (objc == 4) {
 	if (Tcl_ObjSetVar2(interp, objv[3], NULL, resultPtr, 0) == NULL) {
 	    Tcl_AppendResult(interp, "couldn't set variable \"",
-		    Tcl_GetString(objv[3]), "\"", (char *) NULL);
+		    TclGetString(objv[3]), "\"", NULL);
 	    result = TCL_ERROR;
 	} else {
 	    /*
 	     * Set the interpreter's object result to an integer object
-	     * holding the number of matches. 
+	     * holding the number of matches.
 	     */
 
-	    Tcl_SetIntObj(Tcl_GetObjResult(interp), numMatches);
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(numMatches));
 	}
     } else {
 	/*
 	 * No varname supplied, so just return the modified string.
 	 */
+
 	Tcl_SetObjResult(interp, resultPtr);
     }
 
-    done:
-    if (objPtr && (objv[1] == objv[0])) { Tcl_DecrRefCount(objPtr); }
-    if (subPtr && (objv[2] == objv[0])) { Tcl_DecrRefCount(subPtr); }
-    if (resultPtr) { Tcl_DecrRefCount(resultPtr); }
+  done:
+    if (objPtr && (objv[1] == objv[0])) {
+	Tcl_DecrRefCount(objPtr);
+    }
+    if (subPtr && (objv[2] == objv[0])) {
+	Tcl_DecrRefCount(subPtr);
+    }
+    if (resultPtr) {
+	Tcl_DecrRefCount(resultPtr);
+    }
     return result;
 }
 
@@ -906,8 +837,8 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_RenameObjCmd --
  *
- *	This procedure is invoked to process the "rename" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "rename" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -918,23 +849,22 @@ Tcl_RegsubObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_RenameObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Arbitrary value passed to the command. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_RenameObjCmd(
+    ClientData dummy,		/* Arbitrary value passed to the command. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *oldName, *newName;
-    
+
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 1, objv, "oldName newName");
 	return TCL_ERROR;
     }
 
-    oldName = Tcl_GetString(objv[1]);
-    newName = Tcl_GetString(objv[2]);
+    oldName = TclGetString(objv[1]);
+    newName = TclGetString(objv[2]);
     return TclRenameCommand(interp, oldName, newName);
 }
 
@@ -955,83 +885,34 @@ Tcl_RenameObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_ReturnObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ReturnObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    int optionLen, argLen, code, result;
-
-    if (iPtr->errorInfo != NULL) {
-	ckfree(iPtr->errorInfo);
-	iPtr->errorInfo = NULL;
-    }
-    if (iPtr->errorCode != NULL) {
-	ckfree(iPtr->errorCode);
-	iPtr->errorCode = NULL;
-    }
-    code = TCL_OK;
-    
-    for (objv++, objc--;  objc > 1;  objv += 2, objc -= 2) {
-	char *option = Tcl_GetStringFromObj(objv[0], &optionLen);
-	char *arg = Tcl_GetStringFromObj(objv[1], &argLen);
-    	
-	if (strcmp(option, "-code") == 0) {
-	    register int c = arg[0];
-	    if ((c == 'o') && (strcmp(arg, "ok") == 0)) {
-		code = TCL_OK;
-	    } else if ((c == 'e') && (strcmp(arg, "error") == 0)) {
-		code = TCL_ERROR;
-	    } else if ((c == 'r') && (strcmp(arg, "return") == 0)) {
-		code = TCL_RETURN;
-	    } else if ((c == 'b') && (strcmp(arg, "break") == 0)) {
-		code = TCL_BREAK;
-	    } else if ((c == 'c') && (strcmp(arg, "continue") == 0)) {
-		code = TCL_CONTINUE;
-	    } else {
-		result = Tcl_GetIntFromObj((Tcl_Interp *) NULL, objv[1],
-		        &code);
-		if (result != TCL_OK) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			    "bad completion code \"",
-			    Tcl_GetString(objv[1]),
-			    "\": must be ok, error, return, break, ",
-			    "continue, or an integer", (char *) NULL);
-		    return result;
-		}
-	    }
-	} else if (strcmp(option, "-errorinfo") == 0) {
-	    iPtr->errorInfo =
-		(char *) ckalloc((unsigned) (strlen(arg) + 1));
-	    strcpy(iPtr->errorInfo, arg);
-	} else if (strcmp(option, "-errorcode") == 0) {
-	    iPtr->errorCode =
-		(char *) ckalloc((unsigned) (strlen(arg) + 1));
-	    strcpy(iPtr->errorCode, arg);
-	} else {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "bad option \"", option,
-		    "\": must be -code, -errorcode, or -errorinfo",
-		    (char *) NULL);
-	    return TCL_ERROR;
-	}
+    int code, level;
+    Tcl_Obj *returnOpts;
+
+    /*
+     * General syntax: [return ?-option value ...? ?result?]
+     * An even number of words means an explicit result argument is present.
+     */
+
+    int explicitResult = (0 == (objc % 2));
+    int numOptionWords = objc - 1 - explicitResult;
+
+    if (TCL_ERROR == TclMergeReturnOptions(interp, numOptionWords, objv+1,
+	    &returnOpts, &code, &level)) {
+	return TCL_ERROR;
     }
-    
-    if (objc == 1) {
-	/*
-	 * Set the interpreter's object result. An inline version of
-	 * Tcl_SetObjResult.
-	 */
 
-	Tcl_SetObjResult(interp, objv[0]);
+    code = TclProcessReturn(interp, code, level, returnOpts);
+    if (explicitResult) {
+	Tcl_SetObjResult(interp, objv[objc-1]);
     }
-    iPtr->returnCode = code;
-    return TCL_RETURN;
+    return code;
 }
 
 /*
@@ -1039,8 +920,8 @@ Tcl_ReturnObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_SourceObjCmd --
  *
- *	This procedure is invoked to process the "source" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "source" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result.
@@ -1051,20 +932,37 @@ Tcl_ReturnObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_SourceObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_SourceObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    if (objc != 2) {
-	Tcl_WrongNumArgs(interp, 1, objv, "fileName");
+    const char *encodingName = NULL;
+    Tcl_Obj *fileName;
+
+    if (objc != 2 && objc !=4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?-encoding name? fileName");
 	return TCL_ERROR;
     }
 
-    return Tcl_FSEvalFile(interp, objv[1]);
+    fileName = objv[objc-1];
+
+    if (objc == 4) {
+	static const char *options[] = {
+	    "-encoding", NULL
+	};
+	int index;
+
+	if (TCL_ERROR == Tcl_GetIndexFromObj(interp, objv[1], options,
+		"option", TCL_EXACT, &index)) {
+	    return TCL_ERROR;
+	}
+	encodingName = TclGetString(objv[2]);
+    }
+
+    return Tcl_FSEvalFileEx(interp, fileName, encodingName);
 }
 
 /*
@@ -1072,8 +970,8 @@ Tcl_SourceObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_SplitObjCmd --
  *
- *	This procedure is invoked to process the "split" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "split" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1084,17 +982,16 @@ Tcl_SourceObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
 int
-Tcl_SplitObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_SplitObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_UniChar ch;
     int len;
-    char *splitChars, *string, *end;
+    char *splitChars, *stringPtr, *end;
     int splitCharLen, stringLen;
     Tcl_Obj *listPtr, *objPtr;
 
@@ -1102,16 +999,16 @@ Tcl_SplitObjCmd(dummy, interp, objc, objv)
 	splitChars = " \n\t\r";
 	splitCharLen = 4;
     } else if (objc == 3) {
-	splitChars = Tcl_GetStringFromObj(objv[2], &splitCharLen);
+	splitChars = TclGetStringFromObj(objv[2], &splitCharLen);
     } else {
 	Tcl_WrongNumArgs(interp, 1, objv, "string ?splitChars?");
 	return TCL_ERROR;
     }
 
-    string = Tcl_GetStringFromObj(objv[1], &stringLen);
-    end = string + stringLen;
-    listPtr = Tcl_GetObjResult(interp);
-    
+    stringPtr = TclGetStringFromObj(objv[1], &stringLen);
+    end = stringPtr + stringLen;
+    listPtr = Tcl_NewObj();
+
     if (stringLen == 0) {
 	/*
 	 * Do nothing.
@@ -1124,87 +1021,92 @@ Tcl_SplitObjCmd(dummy, interp, objc, objv)
 	/*
 	 * Handle the special case of splitting on every character.
 	 *
-	 * Uses a hash table to ensure that each kind of character has
-	 * only one Tcl_Obj instance (multiply-referenced) in the
-	 * final list.  This is a *major* win when splitting on a long
-	 * string (especially in the megabyte range!) - DKF
+	 * Uses a hash table to ensure that each kind of character has only
+	 * one Tcl_Obj instance (multiply-referenced) in the final list. This
+	 * is a *major* win when splitting on a long string (especially in the
+	 * megabyte range!) - DKF
 	 */
 
 	Tcl_InitHashTable(&charReuseTable, TCL_ONE_WORD_KEYS);
-	for ( ; string < end; string += len) {
-	    len = TclUtfToUniChar(string, &ch);
-	    /* Assume Tcl_UniChar is an integral type... */
-	    hPtr = Tcl_CreateHashEntry(&charReuseTable, (char*)0 + ch, &isNew);
+
+	for ( ; stringPtr < end; stringPtr += len) {
+	    len = TclUtfToUniChar(stringPtr, &ch);
+
+	    /*
+	     * Assume Tcl_UniChar is an integral type...
+	     */
+
+	    hPtr = Tcl_CreateHashEntry(&charReuseTable, (char*)0+ch, &isNew);
 	    if (isNew) {
-		objPtr = Tcl_NewStringObj(string, len);
-		/* Don't need to fiddle with refcount... */
+		TclNewStringObj(objPtr, stringPtr, len);
+
+		/*
+		 * Don't need to fiddle with refcount...
+		 */
+
 		Tcl_SetHashValue(hPtr, (ClientData) objPtr);
 	    } else {
-		objPtr = (Tcl_Obj*) Tcl_GetHashValue(hPtr);
+		objPtr = (Tcl_Obj *) Tcl_GetHashValue(hPtr);
 	    }
 	    Tcl_ListObjAppendElement(NULL, listPtr, objPtr);
 	}
 	Tcl_DeleteHashTable(&charReuseTable);
+
     } else if (splitCharLen == 1) {
 	char *p;
 
 	/*
-	 * Handle the special case of splitting on a single character.
-	 * This is only true for the one-char ASCII case, as one unicode
-	 * char is > 1 byte in length.
+	 * Handle the special case of splitting on a single character. This is
+	 * only true for the one-char ASCII case, as one unicode char is > 1
+	 * byte in length.
 	 */
 
-	while (*string && (p = strchr(string, (int) *splitChars)) != NULL) {
-	    objPtr = Tcl_NewStringObj(string, p - string);
+	while (*stringPtr && (p=strchr(stringPtr,(int)*splitChars)) != NULL) {
+	    objPtr = Tcl_NewStringObj(stringPtr, p - stringPtr);
 	    Tcl_ListObjAppendElement(NULL, listPtr, objPtr);
-	    string = p + 1;
+	    stringPtr = p + 1;
 	}
-	objPtr = Tcl_NewStringObj(string, end - string);
+	TclNewStringObj(objPtr, stringPtr, end - stringPtr);
 	Tcl_ListObjAppendElement(NULL, listPtr, objPtr);
     } else {
 	char *element, *p, *splitEnd;
 	int splitLen;
 	Tcl_UniChar splitChar;
-	
+
 	/*
-	 * Normal case: split on any of a given set of characters.
-	 * Discard instances of the split characters.
+	 * Normal case: split on any of a given set of characters. Discard
+	 * instances of the split characters.
 	 */
 
 	splitEnd = splitChars + splitCharLen;
 
-	for (element = string; string < end; string += len) {
-	    len = TclUtfToUniChar(string, &ch);
+	for (element = stringPtr; stringPtr < end; stringPtr += len) {
+	    len = TclUtfToUniChar(stringPtr, &ch);
 	    for (p = splitChars; p < splitEnd; p += splitLen) {
 		splitLen = TclUtfToUniChar(p, &splitChar);
 		if (ch == splitChar) {
-		    objPtr = Tcl_NewStringObj(element, string - element);
+		    TclNewStringObj(objPtr, element, stringPtr - element);
 		    Tcl_ListObjAppendElement(NULL, listPtr, objPtr);
-		    element = string + len;
+		    element = stringPtr + len;
 		    break;
 		}
 	    }
 	}
-	objPtr = Tcl_NewStringObj(element, string - element);
+
+	TclNewStringObj(objPtr, element, stringPtr - element);
 	Tcl_ListObjAppendElement(NULL, listPtr, objPtr);
     }
+    Tcl_SetObjResult(interp, listPtr);
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_StringObjCmd --
+ * StringFirstCmd --
  *
- *	This procedure is invoked to process the "string" Tcl command.
- *	See the user documentation for details on what it does.  Note
- *	that this command only functions correctly on properly formed
- *	Tcl UTF strings.
- *
- *	Note that the primary methods here (equal, compare, match, ...)
- *	have bytecode equivalents.  You will find the code for those in
- *	tclExecute.c.  The code here will only be used in the non-bc
- *	case (like in an 'eval').
+ *	This procedure is invoked to process the "string first" Tcl command.
+ *	See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1215,1248 +1117,882 @@ Tcl_SplitObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-int
-Tcl_StringObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+static int
+StringFirstCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int index, left, right;
-    Tcl_Obj *resultPtr;
-    char *string1, *string2;
-    int length1, length2;
-    static CONST char *options[] = {
-	"bytelength",	"compare",	"equal",	"first",
-	"index",	"is",		"last",		"length",
-	"map",		"match",	"range",	"repeat",
-	"replace",	"tolower",	"toupper",	"totitle",
-	"trim",		"trimleft",	"trimright",
-	"wordend",	"wordstart",	(char *) NULL
-    };
-    enum options {
-	STR_BYTELENGTH,	STR_COMPARE,	STR_EQUAL,	STR_FIRST,
-	STR_INDEX,	STR_IS,		STR_LAST,	STR_LENGTH,
-	STR_MAP,	STR_MATCH,	STR_RANGE,	STR_REPEAT,
-	STR_REPLACE,	STR_TOLOWER,	STR_TOUPPER,	STR_TOTITLE,
-	STR_TRIM,	STR_TRIMLEFT,	STR_TRIMRIGHT,
-	STR_WORDEND,	STR_WORDSTART
-    };	  
-
-    if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?");
-	return TCL_ERROR;
-    }
-    
-    if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0,
-	    &index) != TCL_OK) {
+    Tcl_UniChar *ustring1, *ustring2;
+    int match, start, length1, length2;
+
+    if (objc < 3 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"needleString haystackString ?startIndex?");
 	return TCL_ERROR;
     }
 
-    resultPtr = Tcl_GetObjResult(interp);
-    switch ((enum options) index) {
-	case STR_EQUAL:
-	case STR_COMPARE: {
-	    /*
-	     * Remember to keep code here in some sync with the
-	     * byte-compiled versions in tclExecute.c (INST_STR_EQ,
-	     * INST_STR_NEQ and INST_STR_CMP as well as the expr string
-	     * comparison in INST_EQ/INST_NEQ/INST_LT/...).
-	     */
-	    int i, match, length, nocase = 0, reqlength = -1;
-	    int (*strCmpFn)();
-
-	    if (objc < 4 || objc > 7) {
-	    str_cmp_args:
-	        Tcl_WrongNumArgs(interp, 2, objv,
-				 "?-nocase? ?-length int? string1 string2");
-		return TCL_ERROR;
-	    }
-
-	    for (i = 2; i < objc-2; i++) {
-		string2 = Tcl_GetStringFromObj(objv[i], &length2);
-		if ((length2 > 1)
-			&& strncmp(string2, "-nocase", (size_t)length2) == 0) {
-		    nocase = 1;
-		} else if ((length2 > 1)
-			&& strncmp(string2, "-length", (size_t)length2) == 0) {
-		    if (i+1 >= objc-2) {
-			goto str_cmp_args;
-		    }
-		    if (Tcl_GetIntFromObj(interp, objv[++i],
-			    &reqlength) != TCL_OK) {
-			return TCL_ERROR;
-		    }
-		} else {
-		    Tcl_AppendStringsToObj(resultPtr, "bad option \"",
-			    string2, "\": must be -nocase or -length",
-			    (char *) NULL);
-		    return TCL_ERROR;
-		}
-	    }
+    /*
+     * We are searching string2 for the sequence string1.
+     */
 
-	    /*
-	     * From now on, we only access the two objects at the end
-	     * of the argument array.
-	     */
-	    objv += objc-2;
+    match = -1;
+    start = 0;
+    length2 = -1;
 
-	    if ((reqlength == 0) || (objv[0] == objv[1])) {
-		/*
-		 * Alway match at 0 chars of if it is the same obj.
-		 */
+    ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
+    ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
 
-		Tcl_SetBooleanObj(resultPtr,
-			((enum options) index == STR_EQUAL));
-		break;
-	    } else if (!nocase && objv[0]->typePtr == &tclByteArrayType &&
-		    objv[1]->typePtr == &tclByteArrayType) {
-		/*
-		 * Use binary versions of comparisons since that won't
-		 * cause undue type conversions and it is much faster.
-		 * Only do this if we're case-sensitive (which is all
-		 * that really makes sense with byte arrays anyway, and
-		 * we have no memcasecmp() for some reason... :^)
-		 */
-		string1 = (char*) Tcl_GetByteArrayFromObj(objv[0], &length1);
-		string2 = (char*) Tcl_GetByteArrayFromObj(objv[1], &length2);
-		strCmpFn = memcmp;
-	    } else if ((objv[0]->typePtr == &tclStringType)
-		    && (objv[1]->typePtr == &tclStringType)) {
-		/*
-		 * Do a unicode-specific comparison if both of the args
-		 * are of String type.  In benchmark testing this proved
-		 * the most efficient check between the unicode and
-		 * string comparison operations.
-		 */
-		string1 = (char*) Tcl_GetUnicodeFromObj(objv[0], &length1);
-		string2 = (char*) Tcl_GetUnicodeFromObj(objv[1], &length2);
-		strCmpFn = nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp;
-	    } else {
-		/*
-		 * As a catch-all we will work with UTF-8.  We cannot use
-		 * memcmp() as that is unsafe with any string containing
-		 * NULL (\xC0\x80 in Tcl's utf rep).  We can use the more
-		 * efficient TclpUtfNcmp2 if we are case-sensitive and no
-		 * specific length was requested.
-		 */
-		string1 = (char*) Tcl_GetStringFromObj(objv[0], &length1);
-		string2 = (char*) Tcl_GetStringFromObj(objv[1], &length2);
-		if ((reqlength < 0) && !nocase) {
-		    strCmpFn = TclpUtfNcmp2;
-		} else {
-		    length1 = Tcl_NumUtfChars(string1, length1);
-		    length2 = Tcl_NumUtfChars(string2, length2);
-		    strCmpFn = nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp;
-		}
-	    }
-
-	    if (((enum options) index == STR_EQUAL)
-		    && (reqlength < 0) && (length1 != length2)) {
-		match = 1; /* this will be reversed below */
-	    } else {
-		length = (length1 < length2) ? length1 : length2;
-		if (reqlength > 0 && reqlength < length) {
-		    length = reqlength;
-		} else if (reqlength < 0) {
-		    /*
-		     * The requested length is negative, so we ignore it by
-		     * setting it to length + 1 so we correct the match var.
-		     */
-		    reqlength = length + 1;
-		}
-		match = strCmpFn(string1, string2, (unsigned) length);
-		if ((match == 0) && (reqlength > length)) {
-		    match = length1 - length2;
-		}
-	    }
+    if (objc == 4) {
+	/*
+	 * If a startIndex is specified, we will need to fast forward to that
+	 * point in the string before we think about a match.
+	 */
 
-	    if ((enum options) index == STR_EQUAL) {
-		Tcl_SetBooleanObj(resultPtr, (match) ? 0 : 1);
-	    } else {
-		Tcl_SetIntObj(resultPtr, ((match > 0) ? 1 :
-					  (match < 0) ? -1 : 0));
-	    }
-	    break;
+	if (TclGetIntForIndexM(interp, objv[3], length2-1, &start) != TCL_OK){
+	    return TCL_ERROR;
 	}
-	case STR_FIRST: {
-	    Tcl_UniChar *ustring1, *ustring2;
-	    int match, start;
 
-	    if (objc < 4 || objc > 5) {
-	        Tcl_WrongNumArgs(interp, 2, objv,
-				 "subString string ?startIndex?");
-		return TCL_ERROR;
-	    }
+	/*
+	 * Reread to prevent shimmering problems.
+	 */
+
+	ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
+	ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
 
+	if (start >= length2) {
+	    goto str_first_done;
+	} else if (start > 0) {
+	    ustring2 += start;
+	    length2 -= start;
+	} else if (start < 0) {
 	    /*
-	     * We are searching string2 for the sequence string1.
+	     * Invalid start index mapped to string start; Bug #423581
 	     */
 
-	    match = -1;
 	    start = 0;
-	    length2 = -1;
-
-	    ustring1 = Tcl_GetUnicodeFromObj(objv[2], &length1);
-	    ustring2 = Tcl_GetUnicodeFromObj(objv[3], &length2);
+	}
+    }
 
-	    if (objc == 5) {
-		/*
-		 * If a startIndex is specified, we will need to fast
-		 * forward to that point in the string before we think
-		 * about a match
-		 */
-		if (TclGetIntForIndex(interp, objv[4], length2 - 1,
-			&start) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (start >= length2) {
-		    goto str_first_done;
-		} else if (start > 0) {
-		    ustring2 += start;
-		    length2  -= start;
-		} else if (start < 0) {
-		    /*
-		     * Invalid start index mapped to string start;
-		     * Bug #423581
-		     */
-		    start = 0;
-		}
-	    }
+    /*
+     * If the length of the needle is more than the length of the haystack, it
+     * cannot be contained in there so we can avoid searching. [Bug 2960021]
+     */
 
-	    if (length1 > 0) {
-		register Tcl_UniChar *p, *end;
+    if (length1 > 0 && length1 <= length2) {
+	register Tcl_UniChar *p, *end;
 
-		end = ustring2 + length2 - length1 + 1;
-		for (p = ustring2;  p < end;  p++) {
-		    /*
-		     * Scan forward to find the first character.
-		     */
-		    if ((*p == *ustring1) &&
-			    (TclUniCharNcmp(ustring1, p,
-				    (unsigned long) length1) == 0)) {
-			match = p - ustring2;
-			break;
-		    }
-		}
-	    }
+	end = ustring2 + length2 - length1 + 1;
+	for (p = ustring2;  p < end;  p++) {
 	    /*
-	     * Compute the character index of the matching string by
-	     * counting the number of characters before the match.
+	     * Scan forward to find the first character.
 	     */
-	    if ((match != -1) && (objc == 5)) {
-		match += start;
-	    }
 
-	    str_first_done:
-	    Tcl_SetIntObj(resultPtr, match);
-	    break;
-	}
-	case STR_INDEX: {
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string charIndex");
-		return TCL_ERROR;
+	    if ((*p == *ustring1) && (TclUniCharNcmp(ustring1, p,
+		    (unsigned long) length1) == 0)) {
+		match = p - ustring2;
+		break;
 	    }
+	}
+    }
 
-	    /*
-	     * If we have a ByteArray object, avoid indexing in the
-	     * Utf string since the byte array contains one byte per
-	     * character.  Otherwise, use the Unicode string rep to
-	     * get the index'th char.
-	     */
+    /*
+     * Compute the character index of the matching string by counting the
+     * number of characters before the match.
+     */
 
-	    if (objv[2]->typePtr == &tclByteArrayType) {
-		string1 = (char *) Tcl_GetByteArrayFromObj(objv[2], &length1);
+    if ((match != -1) && (objc == 4)) {
+	match += start;
+    }
 
-		if (TclGetIntForIndex(interp, objv[3], length1 - 1,
-			&index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if ((index >= 0) && (index < length1)) {
-		    Tcl_SetByteArrayObj(resultPtr,
-			    (unsigned char *)(&string1[index]), 1);
-		}
-	    } else {
-		/*
-		 * Get Unicode char length to calulate what 'end' means.
-		 */
-		length1 = Tcl_GetCharLength(objv[2]);
+  str_first_done:
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(match));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringLastCmd --
+ *
+ *	This procedure is invoked to process the "string last" Tcl command.
+ *	See the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
-		if (TclGetIntForIndex(interp, objv[3], length1 - 1,
-			&index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if ((index >= 0) && (index < length1)) {
-		    char buf[TCL_UTF_MAX];
-		    Tcl_UniChar ch;
+static int
+StringLastCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_UniChar *ustring1, *ustring2, *p;
+    int match, start, length1, length2;
 
-		    ch      = Tcl_GetUniChar(objv[2], index);
-		    length1 = Tcl_UniCharToUtf(ch, buf);
-		    Tcl_SetStringObj(resultPtr, buf, length1);
-		}
-	    }
-	    break;
-	}
-	case STR_IS: {
-	    char *end;
-	    Tcl_UniChar ch;
+    if (objc < 3 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"needleString haystackString ?startIndex?");
+	return TCL_ERROR;
+    }
 
-            /*
-	     * The UniChar comparison function
-	     */
+    /*
+     * We are searching string2 for the sequence string1.
+     */
 
-	    int (*chcomp)_ANSI_ARGS_((int)) = NULL; 
-	    int i, failat = 0, result = 1, strict = 0;
-	    Tcl_Obj *objPtr, *failVarObj = NULL;
-
-	    static CONST char *isOptions[] = {
-		"alnum",	"alpha",	"ascii",	"control",
-		"boolean",	"digit",	"double",	"false",
-		"graph",	"integer",	"lower",	"print",
-		"punct",	"space",	"true",		"upper",
-		"wordchar",	"xdigit",	(char *) NULL
-	    };
-	    enum isOptions {
-		STR_IS_ALNUM,	STR_IS_ALPHA,	STR_IS_ASCII,	STR_IS_CONTROL,
-		STR_IS_BOOL,	STR_IS_DIGIT,	STR_IS_DOUBLE,	STR_IS_FALSE,
-		STR_IS_GRAPH,	STR_IS_INT,	STR_IS_LOWER,	STR_IS_PRINT,
-		STR_IS_PUNCT,	STR_IS_SPACE,	STR_IS_TRUE,	STR_IS_UPPER,
-		STR_IS_WORD,	STR_IS_XDIGIT
-	    };
-
-	    if (objc < 4 || objc > 7) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-				 "class ?-strict? ?-failindex var? str");
-		return TCL_ERROR;
-	    }
-	    if (Tcl_GetIndexFromObj(interp, objv[2], isOptions, "class", 0,
-				    &index) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    if (objc != 4) {
-		for (i = 3; i < objc-1; i++) {
-		    string2 = Tcl_GetStringFromObj(objv[i], &length2);
-		    if ((length2 > 1) &&
-			strncmp(string2, "-strict", (size_t) length2) == 0) {
-			strict = 1;
-		    } else if ((length2 > 1) &&
-			    strncmp(string2, "-failindex",
-				    (size_t) length2) == 0) {
-			if (i+1 >= objc-1) {
-			    Tcl_WrongNumArgs(interp, 3, objv,
-					     "?-strict? ?-failindex var? str");
-			    return TCL_ERROR;
-			}
-			failVarObj = objv[++i];
-		    } else {
-			Tcl_AppendStringsToObj(resultPtr, "bad option \"",
-				string2, "\": must be -strict or -failindex",
-				(char *) NULL);
-			return TCL_ERROR;
-		    }
-		}
-	    }
+    match = -1;
+    start = 0;
+    length2 = -1;
 
-	    /*
-	     * We get the objPtr so that we can short-cut for some classes
-	     * by checking the object type (int and double), but we need
-	     * the string otherwise, because we don't want any conversion
-	     * of type occuring (as, for example, Tcl_Get*FromObj would do
-	     */
-	    objPtr = objv[objc-1];
-	    string1 = Tcl_GetStringFromObj(objPtr, &length1);
-	    if (length1 == 0) {
-		if (strict) {
-		    result = 0;
-		}
-		goto str_is_done;
-	    }
-	    end = string1 + length1;
+    ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
+    ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
 
-	    /*
-	     * When entering here, result == 1 and failat == 0
-	     */
-	    switch ((enum isOptions) index) {
-		case STR_IS_ALNUM:
-		    chcomp = Tcl_UniCharIsAlnum;
-		    break;
-		case STR_IS_ALPHA:
-		    chcomp = Tcl_UniCharIsAlpha;
-		    break;
-		case STR_IS_ASCII:
-		    for (; string1 < end; string1++, failat++) {
-			/*
-			 * This is a valid check in unicode, because all
-			 * bytes < 0xC0 are single byte chars (but isascii
-			 * limits that def'n to 0x80).
-			 */
-			if (*((unsigned char *)string1) >= 0x80) {
-			    result = 0;
-			    break;
-			}
-		    }
-		    break;
-		case STR_IS_BOOL:
-		case STR_IS_TRUE:
-		case STR_IS_FALSE:
-		    /* Optimizers, beware Bug 1187123 ! */
-		    if ((Tcl_GetBoolean(NULL, string1, &i)
-				== TCL_ERROR) ||
-			       (((enum isOptions) index == STR_IS_TRUE) &&
-				i == 0) ||
-			       (((enum isOptions) index == STR_IS_FALSE) &&
-				i != 0)) {
-			result = 0;
-		    }
-		    break;
-		case STR_IS_CONTROL:
-		    chcomp = Tcl_UniCharIsControl;
-		    break;
-		case STR_IS_DIGIT:
-		    chcomp = Tcl_UniCharIsDigit;
-		    break;
-		case STR_IS_DOUBLE: {
-		    char *stop;
+    if (objc == 4) {
+	/*
+	 * If a startIndex is specified, we will need to restrict the string
+	 * range to that char index in the string
+	 */
 
-		    if ((objPtr->typePtr == &tclDoubleType) ||
-			(objPtr->typePtr == &tclIntType)) {
-			break;
-		    }
-		    /*
-		     * This is adapted from Tcl_GetDouble
-		     *
-		     * The danger in this function is that
-		     * "12345678901234567890" is an acceptable 'double',
-		     * but will later be interp'd as an int by something
-		     * like [expr].  Therefore, we check to see if it looks
-		     * like an int, and if so we do a range check on it.
-		     * If strtoul gets to the end, we know we either
-		     * received an acceptable int, or over/underflow
-		     */
-		    if (TclLooksLikeInt(string1, length1)) {
-			errno = 0;
-#ifdef TCL_WIDE_INT_IS_LONG
-			strtoul(string1, &stop, 0); /* INTL: Tcl source. */
-#else
-			strtoull(string1, &stop, 0); /* INTL: Tcl source. */
-#endif
-			if (stop == end) {
-			    if (errno == ERANGE) {
-				result = 0;
-				failat = -1;
-			    }
-			    break;
-			}
-		    }
-		    errno = 0;
-		    strtod(string1, &stop); /* INTL: Tcl source. */
-		    if (errno == ERANGE) {
-			/*
-			 * if (errno == ERANGE), then it was an over/underflow
-			 * problem, but in this method, we only want to know
-			 * yes or no, so bad flow returns 0 (false) and sets
-			 * the failVarObj to the string length.
-			 */
-			result = 0;
-			failat = -1;
-		    } else if (stop == string1) {
-			/*
-			 * In this case, nothing like a number was found
-			 */
-			result = 0;
-			failat = 0;
-		    } else {
-			/*
-			 * Assume we sucked up one char per byte
-			 * and then we go onto SPACE, since we are
-			 * allowed trailing whitespace
-			 */
-			failat = stop - string1;
-			string1 = stop;
-			chcomp = Tcl_UniCharIsSpace;
-		    }
-		    break;
-		}
-		case STR_IS_GRAPH:
-		    chcomp = Tcl_UniCharIsGraph;
-		    break;
-		case STR_IS_INT: {
-		    char *stop;
-		    long int l = 0;
+	if (TclGetIntForIndexM(interp, objv[3], length2-1, &start) != TCL_OK){
+	    return TCL_ERROR;
+	}
 
-		    if (TCL_OK == Tcl_GetIntFromObj(NULL, objPtr, &i)) {
-			break;
-		    }
-		    /*
-		     * Like STR_IS_DOUBLE, but we use strtoul.
-		     * Since Tcl_GetIntFromObj already failed,
-		     * we set result to 0.
-		     */
-		    result = 0;
-		    errno = 0;
-		    l = strtol(string1, &stop, 0); /* INTL: Tcl source. */
-		    if ((errno == ERANGE) || (l > INT_MAX) || (l < INT_MIN)) {
-			/*
-			 * if (errno == ERANGE), then it was an over/underflow
-			 * problem, but in this method, we only want to know
-			 * yes or no, so bad flow returns 0 (false) and sets
-			 * the failVarObj to the string length.
-			 */
-			failat = -1;
+	/*
+	 * Reread to prevent shimmering problems.
+	 */
 
-		    } else if (stop == string1) {
-			/*
-			 * In this case, nothing like a number was found
-			 */
-			failat = 0;
-		    } else {
-			/*
-			 * Assume we sucked up one char per byte
-			 * and then we go onto SPACE, since we are
-			 * allowed trailing whitespace
-			 */
-			failat = stop - string1;
-			string1 = stop;
-			chcomp = Tcl_UniCharIsSpace;
-		    }
-		    break;
-		}
-		case STR_IS_LOWER:
-		    chcomp = Tcl_UniCharIsLower;
-		    break;
-		case STR_IS_PRINT:
-		    chcomp = Tcl_UniCharIsPrint;
-		    break;
-		case STR_IS_PUNCT:
-		    chcomp = Tcl_UniCharIsPunct;
-		    break;
-		case STR_IS_SPACE:
-		    chcomp = Tcl_UniCharIsSpace;
-		    break;
-		case STR_IS_UPPER:
-		    chcomp = Tcl_UniCharIsUpper;
-		    break;
-		case STR_IS_WORD:
-		    chcomp = Tcl_UniCharIsWordChar;
-		    break;
-		case STR_IS_XDIGIT: {
-		    for (; string1 < end; string1++, failat++) {
-			/* INTL: We assume unicode is bad for this class */
-			if ((*((unsigned char *)string1) >= 0xC0) ||
-			    !isxdigit(*(unsigned char *)string1)) {
-			    result = 0;
-			    break;
-			}
-		    }
-		    break;
-		}
-	    }
-	    if (chcomp != NULL) {
-		for (; string1 < end; string1 += length2, failat++) {
-		    length2 = TclUtfToUniChar(string1, &ch);
-		    if (!chcomp(ch)) {
-			result = 0;
-			break;
-		    }
-		}
-	    }
-	str_is_done:
-	    /*
-	     * Only set the failVarObj when we will return 0
-	     * and we have indicated a valid fail index (>= 0)
-	     */
-	    if ((result == 0) && (failVarObj != NULL)) {
-		Tcl_Obj *resPtr, *tmpPtr = Tcl_NewIntObj(failat);
-
-		Tcl_IncrRefCount(tmpPtr);
-		resPtr = Tcl_ObjSetVar2(interp, failVarObj, NULL, tmpPtr,
-			TCL_LEAVE_ERR_MSG);
-		Tcl_DecrRefCount(tmpPtr);
-		if (resPtr == NULL) {
-		    return TCL_ERROR;
-		}
-	    }
-	    Tcl_SetBooleanObj(resultPtr, result);
-	    break;
+	ustring1 = Tcl_GetUnicodeFromObj(objv[1], &length1);
+	ustring2 = Tcl_GetUnicodeFromObj(objv[2], &length2);
+
+	if (start < 0) {
+	    goto str_last_done;
+	} else if (start < length2) {
+	    p = ustring2 + start + 1 - length1;
+	} else {
+	    p = ustring2 + length2 - length1;
 	}
-	case STR_LAST: {
-	    Tcl_UniChar *ustring1, *ustring2, *p;
-	    int match, start;
+    } else {
+	p = ustring2 + length2 - length1;
+    }
 
-	    if (objc < 4 || objc > 5) {
-	        Tcl_WrongNumArgs(interp, 2, objv,
-				 "subString string ?startIndex?");
-		return TCL_ERROR;
-	    }
+    /*
+     * If the length of the needle is more than the length of the haystack, it
+     * cannot be contained in there so we can avoid searching. [Bug 2960021]
+     */
 
+    if (length1 > 0 && length1 <= length2) {
+	for (; p >= ustring2; p--) {
 	    /*
-	     * We are searching string2 for the sequence string1.
+	     * Scan backwards to find the first character.
 	     */
 
-	    match = -1;
-	    start = 0;
-	    length2 = -1;
+	    if ((*p == *ustring1) && !memcmp(ustring1, p,
+		    sizeof(Tcl_UniChar) * (size_t)length1)) {
+		match = p - ustring2;
+		break;
+	    }
+	}
+    }
+
+  str_last_done:
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(match));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringIndexCmd --
+ *
+ *	This procedure is invoked to process the "string index" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
-	    ustring1 = Tcl_GetUnicodeFromObj(objv[2], &length1);
-	    ustring2 = Tcl_GetUnicodeFromObj(objv[3], &length2);
+static int
+StringIndexCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int length, index;
 
-	    if (objc == 5) {
-		/*
-		 * If a startIndex is specified, we will need to restrict
-		 * the string range to that char index in the string
-		 */
-		if (TclGetIntForIndex(interp, objv[4], length2 - 1,
-			&start) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (start < 0) {
-		    goto str_last_done;
-		} else if (start < length2) {
-		    p = ustring2 + start + 1 - length1;
-		} else {
-		    p = ustring2 + length2 - length1;
-		}
-	    } else {
-		p = ustring2 + length2 - length1;
-	    }
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string charIndex");
+	return TCL_ERROR;
+    }
 
-	    if (length1 > 0) {
-		for (; p >= ustring2;  p--) {
-		    /*
-		     * Scan backwards to find the first character.
-		     */
-		    if ((*p == *ustring1) &&
-			    (memcmp((char *) ustring1, (char *) p, (size_t)
-				    (length1 * sizeof(Tcl_UniChar))) == 0)) {
-			match = p - ustring2;
-			break;
-		    }
-		}
-	    }
+    /*
+     * If we have a ByteArray object, avoid indexing in the Utf string since
+     * the byte array contains one byte per character. Otherwise, use the
+     * Unicode string rep to get the index'th char.
+     */
 
-	    str_last_done:
-	    Tcl_SetIntObj(resultPtr, match);
-	    break;
+    if (objv[1]->typePtr == &tclByteArrayType) {
+	const unsigned char *string =
+		Tcl_GetByteArrayFromObj(objv[1], &length);
+
+	if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK){
+	    return TCL_ERROR;
 	}
-	case STR_BYTELENGTH:
-	case STR_LENGTH: {
-	    if (objc != 3) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string");
-		return TCL_ERROR;
-	    }
+	string = Tcl_GetByteArrayFromObj(objv[1], &length);
+	if ((index >= 0) && (index < length)) {
+	    Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(string + index, 1));
+	}
+    } else {
+	/*
+	 * Get Unicode char length to calulate what 'end' means.
+	 */
 
-	    if ((enum options) index == STR_BYTELENGTH) {
-		(void) Tcl_GetStringFromObj(objv[2], &length1);
-	    } else {
-		/*
-		 * If we have a ByteArray object, avoid recomputing the
-		 * string since the byte array contains one byte per
-		 * character.  Otherwise, use the Unicode string rep to
-		 * calculate the length.
-		 */
+	length = Tcl_GetCharLength(objv[1]);
 
-		if (objv[2]->typePtr == &tclByteArrayType) {
-		    (void) Tcl_GetByteArrayFromObj(objv[2], &length1);
-		} else {
-		    length1 = Tcl_GetCharLength(objv[2]);
-		}
-	    }
-	    Tcl_SetIntObj(resultPtr, length1);
-	    break;
+	if (TclGetIntForIndexM(interp, objv[2], length-1, &index) != TCL_OK){
+	    return TCL_ERROR;
 	}
-	case STR_MAP: {
-	    int mapElemc, nocase = 0, copySource = 0;
-	    Tcl_Obj **mapElemv, *sourceObj;
-	    Tcl_UniChar *ustring1, *ustring2, *p, *end;
-	    int (*strCmpFn)_ANSI_ARGS_((CONST Tcl_UniChar*,
-					CONST Tcl_UniChar*, unsigned long));
-
-	    if (objc < 4 || objc > 5) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "?-nocase? charMap string");
-		return TCL_ERROR;
-	    }
+	if ((index >= 0) && (index < length)) {
+	    char buf[TCL_UTF_MAX];
+	    Tcl_UniChar ch;
 
-	    if (objc == 5) {
-		string2 = Tcl_GetStringFromObj(objv[2], &length2);
-		if ((length2 > 1) &&
-		    strncmp(string2, "-nocase", (size_t) length2) == 0) {
-		    nocase = 1;
-		} else {
-		    Tcl_AppendStringsToObj(resultPtr, "bad option \"",
-					   string2, "\": must be -nocase",
-					   (char *) NULL);
-		    return TCL_ERROR;
-		}
-	    }
+	    ch = Tcl_GetUniChar(objv[1], index);
+	    length = Tcl_UniCharToUtf(ch, buf);
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(buf, length));
+	}
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringIsCmd --
+ *
+ *	This procedure is invoked to process the "string is" Tcl command. See
+ *	the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
-	    if (Tcl_ListObjGetElements(interp, objv[objc-2], &mapElemc,
-				       &mapElemv) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    if (mapElemc == 0) {
-		/*
-		 * empty charMap, just return whatever string was given
-		 */
-		Tcl_SetObjResult(interp, objv[objc-1]);
-		return TCL_OK;
-	    } else if (mapElemc & 1) {
-		/*
-		 * The charMap must be an even number of key/value items
-		 */
-		Tcl_SetStringObj(resultPtr, "char map list unbalanced", -1);
-		return TCL_ERROR;
-	    }
+static int
+StringIsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    const char *string1, *end, *stop;
+    Tcl_UniChar ch;
+    int (*chcomp)(int) = NULL;	/* The UniChar comparison function. */
+    int i, failat = 0, result = 1, strict = 0, index, length1, length2;
+    Tcl_Obj *objPtr, *failVarObj = NULL;
+    Tcl_WideInt w;
+
+    static const char *isClasses[] = {
+	"alnum",	"alpha",	"ascii",	"control",
+	"boolean",	"digit",	"double",	"false",
+	"graph",	"integer",	"list",		"lower",
+	"print",	"punct",	"space",	"true",
+	"upper",	"wideinteger",	"wordchar",	"xdigit",
+	NULL
+    };
+    enum isClasses {
+	STR_IS_ALNUM, STR_IS_ALPHA,	STR_IS_ASCII,  STR_IS_CONTROL,
+	STR_IS_BOOL,  STR_IS_DIGIT,	STR_IS_DOUBLE, STR_IS_FALSE,
+	STR_IS_GRAPH, STR_IS_INT,	STR_IS_LIST,   STR_IS_LOWER,
+	STR_IS_PRINT, STR_IS_PUNCT,	STR_IS_SPACE,  STR_IS_TRUE,
+	STR_IS_UPPER, STR_IS_WIDE,	STR_IS_WORD,   STR_IS_XDIGIT
+    };
+    static const char *isOptions[] = {
+	"-strict", "-failindex", NULL
+    };
+    enum isOptions {
+	OPT_STRICT, OPT_FAILIDX
+    };
 
-	    /*
-	     * Take a copy of the source string object if it is the
-	     * same as the map string to cut out nasty sharing
-	     * crashes. [Bug 1018562]
-	     */
-	    if (objv[objc-2] == objv[objc-1]) {
-		sourceObj = Tcl_DuplicateObj(objv[objc-1]);
-		copySource = 1;
-	    } else {
-		sourceObj = objv[objc-1];
+    if (objc < 3 || objc > 6) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"class ?-strict? ?-failindex var? str");
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIndexFromObj(interp, objv[1], isClasses, "class", 0,
+	    &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (objc != 3) {
+	for (i = 2; i < objc-1; i++) {
+	    int idx2;
+
+	    if (Tcl_GetIndexFromObj(interp, objv[i], isOptions, "option", 0,
+		    &idx2) != TCL_OK) {
+		return TCL_ERROR;
 	    }
-	    ustring1 = Tcl_GetUnicodeFromObj(sourceObj, &length1);
-	    if (length1 == 0) {
-		/*
-		 * Empty input string, just stop now
-		 */
-		if (copySource) {
-		    Tcl_DecrRefCount(sourceObj);
+	    switch ((enum isOptions) idx2) {
+	    case OPT_STRICT:
+		strict = 1;
+		break;
+	    case OPT_FAILIDX:
+		if (i+1 >= objc-1) {
+		    Tcl_WrongNumArgs(interp, 2, objv,
+			    "?-strict? ?-failindex var? str");
+		    return TCL_ERROR;
 		}
+		failVarObj = objv[++i];
 		break;
 	    }
-	    end = ustring1 + length1;
+	}
+    }
+
+    /*
+     * We get the objPtr so that we can short-cut for some classes by checking
+     * the object type (int and double), but we need the string otherwise,
+     * because we don't want any conversion of type occuring (as, for example,
+     * Tcl_Get*FromObj would do).
+     */
 
-	    strCmpFn = nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp;
+    objPtr = objv[objc-1];
 
-	    /*
-	     * Force result to be Unicode
-	     */
-	    Tcl_SetUnicodeObj(resultPtr, ustring1, 0);
+    /*
+     * When entering here, result == 1 and failat == 0.
+     */
 
-	    if (mapElemc == 2) {
-		/*
-		 * Special case for one map pair which avoids the extra
-		 * for loop and extra calls to get Unicode data.  The
-		 * algorithm is otherwise identical to the multi-pair case.
-		 * This will be >30% faster on larger strings.
-		 */
-		int mapLen;
-		Tcl_UniChar *mapString, u2lc;
-
-		ustring2 = Tcl_GetUnicodeFromObj(mapElemv[0], &length2);
-		p = ustring1;
-		if ((length2 > length1) || (length2 == 0)) {
-		    /* match string is either longer than input or empty */
-		    ustring1 = end;
-		} else {
-		    mapString = Tcl_GetUnicodeFromObj(mapElemv[1], &mapLen);
-		    u2lc = (nocase ? Tcl_UniCharToLower(*ustring2) : 0);
-		    for (; ustring1 < end; ustring1++) {
-			if (((*ustring1 == *ustring2) ||
-				(nocase && (Tcl_UniCharToLower(*ustring1) ==
-					u2lc))) &&
-				((length2 == 1) || strCmpFn(ustring1, ustring2,
-					(unsigned long) length2) == 0)) {
-			    if (p != ustring1) {
-				Tcl_AppendUnicodeToObj(resultPtr, p,
-					ustring1 - p);
-				p = ustring1 + length2;
-			    } else {
-				p += length2;
-			    }
-			    ustring1 = p - 1;
-
-			    Tcl_AppendUnicodeToObj(resultPtr, mapString,
-				    mapLen);
-			}
-		    }
-		}
+    switch ((enum isClasses) index) {
+    case STR_IS_ALNUM:
+	chcomp = Tcl_UniCharIsAlnum;
+	break;
+    case STR_IS_ALPHA:
+	chcomp = Tcl_UniCharIsAlpha;
+	break;
+    case STR_IS_ASCII:
+	chcomp = UniCharIsAscii;
+	break;
+    case STR_IS_BOOL:
+    case STR_IS_TRUE:
+    case STR_IS_FALSE:
+	if (TCL_OK != Tcl_ConvertToType(NULL, objPtr, &tclBooleanType)) {
+	    if (strict) {
+		result = 0;
 	    } else {
-		Tcl_UniChar **mapStrings, *u2lc = NULL;
-		int *mapLens;
-		/*
-		 * Precompute pointers to the unicode string and length.
-		 * This saves us repeated function calls later,
-		 * significantly speeding up the algorithm.  We only need
-		 * the lowercase first char in the nocase case.
-		 */
-		mapStrings = (Tcl_UniChar **) ckalloc((mapElemc * 2)
-			* sizeof(Tcl_UniChar *));
-		mapLens = (int *) ckalloc((mapElemc * 2) * sizeof(int));
-		if (nocase) {
-		    u2lc = (Tcl_UniChar *)
-			ckalloc((mapElemc) * sizeof(Tcl_UniChar));
-		}
-		for (index = 0; index < mapElemc; index++) {
-		    mapStrings[index] = Tcl_GetUnicodeFromObj(mapElemv[index],
-			    &(mapLens[index]));
-		    if (nocase && ((index % 2) == 0)) {
-			u2lc[index/2] = Tcl_UniCharToLower(*mapStrings[index]);
-		    }
-		}
-		for (p = ustring1; ustring1 < end; ustring1++) {
-		    for (index = 0; index < mapElemc; index += 2) {
-			/*
-			 * Get the key string to match on.
-			 */
-			ustring2 = mapStrings[index];
-			length2  = mapLens[index];
-			if ((length2 > 0) && ((*ustring1 == *ustring2) ||
-				(nocase && (Tcl_UniCharToLower(*ustring1) ==
-					u2lc[index/2]))) &&
-				/* restrict max compare length */
-				((end - ustring1) >= length2) &&
-				((length2 == 1) || strCmpFn(ustring2, ustring1,
-					(unsigned long) length2) == 0)) {
-			    if (p != ustring1) {
-				/*
-				 * Put the skipped chars onto the result first
-				 */
-				Tcl_AppendUnicodeToObj(resultPtr, p,
-					ustring1 - p);
-				p = ustring1 + length2;
-			    } else {
-				p += length2;
-			    }
-			    /*
-			     * Adjust len to be full length of matched string
-			     */
-			    ustring1 = p - 1;
-
-			    /*
-			     * Append the map value to the unicode string
-			     */
-			    Tcl_AppendUnicodeToObj(resultPtr,
-				    mapStrings[index+1], mapLens[index+1]);
-			    break;
-			}
-		    }
-		}
-		ckfree((char *) mapStrings);
-		ckfree((char *) mapLens);
-		if (nocase) {
-		    ckfree((char *) u2lc);
-		}
-	    }
-	    if (p != ustring1) {
-		/*
-		 * Put the rest of the unmapped chars onto result
-		 */
-		Tcl_AppendUnicodeToObj(resultPtr, p, ustring1 - p);
-	    }
-	    if (copySource) {
-		Tcl_DecrRefCount(sourceObj);
-	    }
+		string1 = TclGetStringFromObj(objPtr, &length1);
+		result = length1 == 0;
+	    }
+	} else if (((index == STR_IS_TRUE) &&
+		objPtr->internalRep.longValue == 0)
+	    || ((index == STR_IS_FALSE) &&
+		objPtr->internalRep.longValue != 0)) {
+	    result = 0;
+	}
+	break;
+    case STR_IS_CONTROL:
+	chcomp = Tcl_UniCharIsControl;
+	break;
+    case STR_IS_DIGIT:
+	chcomp = Tcl_UniCharIsDigit;
+	break;
+    case STR_IS_DOUBLE: {
+	/* TODO */
+	if ((objPtr->typePtr == &tclDoubleType) ||
+		(objPtr->typePtr == &tclIntType) ||
+#ifndef NO_WIDE_TYPE
+		(objPtr->typePtr == &tclWideIntType) ||
+#endif
+		(objPtr->typePtr == &tclBignumType)) {
 	    break;
 	}
-	case STR_MATCH: {
-	    Tcl_UniChar *ustring1, *ustring2;
-	    int nocase = 0;
-
-	    if (objc < 4 || objc > 5) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "?-nocase? pattern string");
-		return TCL_ERROR;
+	string1 = TclGetStringFromObj(objPtr, &length1);
+	if (length1 == 0) {
+	    if (strict) {
+		result = 0;
 	    }
-
-	    if (objc == 5) {
-		string2 = Tcl_GetStringFromObj(objv[2], &length2);
-		if ((length2 > 1) &&
-		    strncmp(string2, "-nocase", (size_t) length2) == 0) {
-		    nocase = 1;
-		} else {
-		    Tcl_AppendStringsToObj(resultPtr, "bad option \"",
-					   string2, "\": must be -nocase",
-					   (char *) NULL);
-		    return TCL_ERROR;
-		}
+	    goto str_is_done;
+	}
+	end = string1 + length1;
+	if (TclParseNumber(NULL, objPtr, NULL, NULL, -1,
+		(const char **) &stop, 0) != TCL_OK) {
+	    result = 0;
+	    failat = 0;
+	} else {
+	    failat = stop - string1;
+	    if (stop < end) {
+		result = 0;
+		TclFreeIntRep(objPtr);
+		objPtr->typePtr = NULL;
 	    }
-	    ustring1 = Tcl_GetUnicodeFromObj(objv[objc-1], &length1);
-	    ustring2 = Tcl_GetUnicodeFromObj(objv[objc-2], &length2);
-	    Tcl_SetBooleanObj(resultPtr, TclUniCharMatch(ustring1, length1,
-		    ustring2, length2, nocase));
+	}
+	break;
+    }
+    case STR_IS_GRAPH:
+	chcomp = Tcl_UniCharIsGraph;
+	break;
+    case STR_IS_INT:
+	if (TCL_OK == TclGetIntFromObj(NULL, objPtr, &i)) {
+	    break;
+	}
+	goto failedIntParse;
+    case STR_IS_WIDE:
+	if (TCL_OK == Tcl_GetWideIntFromObj(NULL, objPtr, &w)) {
 	    break;
 	}
-	case STR_RANGE: {
-	    int first, last;
 
-	    if (objc != 5) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string first last");
-		return TCL_ERROR;
+    failedIntParse:
+	string1 = TclGetStringFromObj(objPtr, &length1);
+	if (length1 == 0) {
+	    if (strict) {
+		result = 0;
 	    }
-
+	    goto str_is_done;
+	}
+	result = 0;
+	if (failVarObj == NULL) {
 	    /*
-	     * If we have a ByteArray object, avoid indexing in the
-	     * Utf string since the byte array contains one byte per
-	     * character.  Otherwise, use the Unicode string rep to
-	     * get the range.
+	     * Don't bother computing the failure point if we're not going to
+	     * return it.
 	     */
 
-	    if (objv[2]->typePtr == &tclByteArrayType) {
-		string1 = (char *)Tcl_GetByteArrayFromObj(objv[2], &length1);
-		length1--;
+	    break;
+	}
+	end = string1 + length1;
+	if (TclParseNumber(NULL, objPtr, NULL, NULL, -1,
+		(const char **) &stop, TCL_PARSE_INTEGER_ONLY) == TCL_OK) {
+	    if (stop == end) {
+		/*
+		 * Entire string parses as an integer, but rejected by
+		 * Tcl_Get(Wide)IntFromObj() so we must have overflowed the
+		 * target type, and our convention is to return failure at
+		 * index -1 in that situation.
+		 */
+
+		failat = -1;
 	    } else {
 		/*
-		 * Get the length in actual characters.
+		 * Some prefix parsed as an integer, but not the whole string,
+		 * so return failure index as the point where parsing stopped.
+		 * Clear out the internal rep, since keeping it would leave
+		 * *objPtr in an inconsistent state.
 		 */
-		string1 = NULL;
-		length1 = Tcl_GetCharLength(objv[2]) - 1;
-	    }
 
-	    if ((TclGetIntForIndex(interp, objv[3], length1, &first) != TCL_OK)
-		    || (TclGetIntForIndex(interp, objv[4], length1,
-			    &last) != TCL_OK)) {
-		return TCL_ERROR;
+		failat = stop - string1;
+		TclFreeIntRep(objPtr);
+		objPtr->typePtr = NULL;
 	    }
+	} else {
+	    /*
+	     * No prefix is a valid integer. Fail at beginning.
+	     */
 
-	    if (first < 0) {
-		first = 0;
-	    }
-	    if (last >= length1) {
-		last = length1;
-	    }
-	    if (last >= first) {
-		if (string1 != NULL) {
-		    int numBytes = last - first + 1;
-		    resultPtr = Tcl_NewByteArrayObj(
-			(unsigned char *) &string1[first], numBytes);
-		    Tcl_SetObjResult(interp, resultPtr);
-		} else {
-		    Tcl_SetObjResult(interp,
-			    Tcl_GetRange(objv[2], first, last));
-		}
-	    }
+	    failat = 0;
+	}
+	break;
+    case STR_IS_LIST:
+	/*
+	 * We ignore the strictness here, since empty strings are always
+	 * well-formed lists.
+	 */
+
+	if (TCL_OK == TclListObjLength(NULL, objPtr, &length2)) {
 	    break;
 	}
-	case STR_REPEAT: {
-	    int count;
 
-	    if (objc != 4) {
-		Tcl_WrongNumArgs(interp, 2, objv, "string count");
-		return TCL_ERROR;
-	    }
+	if (failVarObj != NULL) {
+	    /*
+	     * Need to figure out where the list parsing failed, which is
+	     * fairly expensive. This is adapted from the core of
+	     * SetListFromAny().
+	     */
 
-	    if (Tcl_GetIntFromObj(interp, objv[3], &count) != TCL_OK) {
-		return TCL_ERROR;
-	    }
+	    const char *elemStart, *nextElem;
+	    int lenRemain, elemSize;
+	    register const char *p;
+
+	    string1 = TclGetStringFromObj(objPtr, &length1);
+	    end = string1 + length1;
+	    failat = -1;
+	    for (p=string1, lenRemain=length1; lenRemain > 0;
+		    p=nextElem, lenRemain=end-nextElem) {
+		if (TCL_ERROR == TclFindElement(NULL, p, lenRemain,
+			&elemStart, &nextElem, &elemSize, NULL)) {
+		    Tcl_Obj *tmpStr;
 
-	    if (count == 1) {
-		Tcl_SetObjResult(interp, objv[2]);
-	    } else if (count > 1) {
-		string1 = Tcl_GetStringFromObj(objv[2], &length1);
-		if (length1 > 0) {
-		    /*
-		     * Only build up a string that has data.  Instead of
-		     * building it up with repeated appends, we just allocate
-		     * the necessary space once and copy the string value in.
-		     * Check for overflow with back-division. [Bug #714106]
-		     */
-		    length2		= length1 * count;
-		    if ((length2 / count) != length1) {
-			char buf[TCL_INTEGER_SPACE+1];
-			sprintf(buf, "%d", INT_MAX);
-			Tcl_AppendStringsToObj(resultPtr,
-				"string size overflow, must be less than ",
-				buf, (char *) NULL);
-			return TCL_ERROR;
-		    }
 		    /*
-		     * Include space for the NULL
+		     * This is the simplest way of getting the number of
+		     * characters parsed. Note that this is not the same as
+		     * the number of bytes when parsing strings with non-ASCII
+		     * characters in them.
+		     *
+		     * Skip leading spaces first. This is only really an issue
+		     * if it is the first "element" that has the failure.
 		     */
-		    string2		= (char *) ckalloc((size_t) length2+1);
-		    for (index = 0; index < count; index++) {
-			memcpy(string2 + (length1 * index), string1,
-				(size_t) length1);
+
+		    while (TclIsSpaceProc(*p)) {
+			p++;
 		    }
-		    string2[length2]	= '\0';
-		    /*
-		     * We have to directly assign this instead of using
-		     * Tcl_SetStringObj (and indirectly TclInitStringRep)
-		     * because that makes another copy of the data.
-		     */
-		    resultPtr		= Tcl_NewObj();
-		    resultPtr->bytes	= string2;
-		    resultPtr->length	= length2;
-		    Tcl_SetObjResult(interp, resultPtr);
+		    TclNewStringObj(tmpStr, string1, p-string1);
+		    failat = Tcl_GetCharLength(tmpStr);
+		    TclDecrRefCount(tmpStr);
+		    break;
 		}
 	    }
-	    break;
 	}
-	case STR_REPLACE: {
-	    Tcl_UniChar *ustring1;
-	    int first, last;
-
-	    if (objc < 5 || objc > 6) {
-	        Tcl_WrongNumArgs(interp, 2, objv,
-				 "string first last ?string?");
-		return TCL_ERROR;
+	result = 0;
+	break;
+    case STR_IS_LOWER:
+	chcomp = Tcl_UniCharIsLower;
+	break;
+    case STR_IS_PRINT:
+	chcomp = Tcl_UniCharIsPrint;
+	break;
+    case STR_IS_PUNCT:
+	chcomp = Tcl_UniCharIsPunct;
+	break;
+    case STR_IS_SPACE:
+	chcomp = Tcl_UniCharIsSpace;
+	break;
+    case STR_IS_UPPER:
+	chcomp = Tcl_UniCharIsUpper;
+	break;
+    case STR_IS_WORD:
+	chcomp = Tcl_UniCharIsWordChar;
+	break;
+    case STR_IS_XDIGIT:
+	chcomp = UniCharIsHexDigit;
+	break;
+    }
+
+    if (chcomp != NULL) {
+	string1 = TclGetStringFromObj(objPtr, &length1);
+	if (length1 == 0) {
+	    if (strict) {
+		result = 0;
+	    }
+	    goto str_is_done;
+	}
+	end = string1 + length1;
+	for (; string1 < end; string1 += length2, failat++) {
+	    length2 = TclUtfToUniChar(string1, &ch);
+	    if (!chcomp(ch)) {
+		result = 0;
+		break;
 	    }
+	}
+    }
 
-	    ustring1 = Tcl_GetUnicodeFromObj(objv[2], &length1);
-	    length1--;
+    /*
+     * Only set the failVarObj when we will return 0 and we have indicated a
+     * valid fail index (>= 0).
+     */
 
-	    if ((TclGetIntForIndex(interp, objv[3], length1, &first) != TCL_OK)
-		    || (TclGetIntForIndex(interp, objv[4], length1,
-			    &last) != TCL_OK)) {
-		return TCL_ERROR;
-	    }
+ str_is_done:
+    if ((result == 0) && (failVarObj != NULL) &&
+	Tcl_ObjSetVar2(interp, failVarObj, NULL, Tcl_NewIntObj(failat),
+		TCL_LEAVE_ERR_MSG) == NULL) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(result));
+    return TCL_OK;
+}
 
-	    if ((last < first) || (last < 0) || (first > length1)) {
-		Tcl_SetObjResult(interp, objv[2]);
-	    } else {
-		if (first < 0) {
-		    first = 0;
-		}
+static int
+UniCharIsAscii(
+    int character)
+{
+    return (character >= 0) && (character < 0x80);
+}
 
-		Tcl_SetUnicodeObj(resultPtr, ustring1, first);
-		if (objc == 6) {
-		    Tcl_AppendObjToObj(resultPtr, objv[5]);
-		}
-		if (last < length1) {
-		    Tcl_AppendUnicodeToObj(resultPtr, ustring1 + last + 1,
-			    length1 - last);
-		}
-	    }
-	    break;
-	}
-	case STR_TOLOWER:
-	case STR_TOUPPER:
-	case STR_TOTITLE:
-	    if (objc < 3 || objc > 5) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string ?first? ?last?");
-		return TCL_ERROR;
-	    }
+static int
+UniCharIsHexDigit(
+    int character)
+{
+    return (character >= 0) && (character < 0x80) && isxdigit(character);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringMapCmd --
+ *
+ *	This procedure is invoked to process the "string map" Tcl command. See
+ *	the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
-	    string1 = Tcl_GetStringFromObj(objv[2], &length1);
+static int
+StringMapCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int length1, length2, mapElemc, index;
+    int nocase = 0, mapWithDict = 0, copySource = 0;
+    Tcl_Obj **mapElemv, *sourceObj, *resultPtr;
+    Tcl_UniChar *ustring1, *ustring2, *p, *end;
+    int (*strCmpFn)(const Tcl_UniChar*, const Tcl_UniChar*, unsigned long);
+
+    if (objc < 3 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?-nocase? charMap string");
+	return TCL_ERROR;
+    }
 
-	    if (objc == 3) {
-		/*
-		 * Since the result object is not a shared object, it is
-		 * safe to copy the string into the result and do the
-		 * conversion in place.  The conversion may change the length
-		 * of the string, so reset the length after conversion.
-		 */
+    if (objc == 4) {
+	const char *string = TclGetStringFromObj(objv[1], &length2);
 
-		Tcl_SetStringObj(resultPtr, string1, length1);
-		if ((enum options) index == STR_TOLOWER) {
-		    length1 = Tcl_UtfToLower(Tcl_GetString(resultPtr));
-		} else if ((enum options) index == STR_TOUPPER) {
-		    length1 = Tcl_UtfToUpper(Tcl_GetString(resultPtr));
-		} else {
-		    length1 = Tcl_UtfToTitle(Tcl_GetString(resultPtr));
-		}
-		Tcl_SetObjLength(resultPtr, length1);
-	    } else {
-		int first, last;
-		CONST char *start, *end;
+	if ((length2 > 1) &&
+		strncmp(string, "-nocase", (size_t) length2) == 0) {
+	    nocase = 1;
+	} else {
+	    Tcl_AppendResult(interp, "bad option \"", string,
+		    "\": must be -nocase", NULL);
+	    return TCL_ERROR;
+	}
+    }
 
-		length1 = Tcl_NumUtfChars(string1, length1) - 1;
-		if (TclGetIntForIndex(interp, objv[3], length1,
-				      &first) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (first < 0) {
-		    first = 0;
-		}
-		last = first;
-		if ((objc == 5) && (TclGetIntForIndex(interp, objv[4], length1,
-						      &last) != TCL_OK)) {
-		    return TCL_ERROR;
-		}
-		if (last >= length1) {
-		    last = length1;
-		}
-		if (last < first) {
-		    Tcl_SetObjResult(interp, objv[2]);
-		    break;
-		}
-		start = Tcl_UtfAtIndex(string1, first);
-		end = Tcl_UtfAtIndex(start, last - first + 1);
-		length2 = end-start;
-		string2 = ckalloc((size_t) length2+1);
-		memcpy(string2, start, (size_t) length2);
-		string2[length2] = '\0';
-		if ((enum options) index == STR_TOLOWER) {
-		    length2 = Tcl_UtfToLower(string2);
-		} else if ((enum options) index == STR_TOUPPER) {
-		    length2 = Tcl_UtfToUpper(string2);
-		} else {
-		    length2 = Tcl_UtfToTitle(string2);
-		}
-		Tcl_SetStringObj(resultPtr, string1, start - string1);
-		Tcl_AppendToObj(resultPtr, string2, length2);
-		Tcl_AppendToObj(resultPtr, end, -1);
-		ckfree(string2);
-	    }
-	    break;
+    /*
+     * This test is tricky, but has to be that way or you get other strange
+     * inconsistencies (see test string-10.20 for illustration why!)
+     */
 
-	case STR_TRIM: {
-	    Tcl_UniChar ch, trim;
-	    register CONST char *p, *end;
-	    char *check, *checkEnd;
-	    int offset;
-
-	    left = 1;
-	    right = 1;
-
-	    dotrim:
-	    if (objc == 4) {
-		string2 = Tcl_GetStringFromObj(objv[3], &length2);
-	    } else if (objc == 3) {
-		string2 = " \t\n\r";
-		length2 = strlen(string2);
-	    } else {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string ?chars?");
-		return TCL_ERROR;
-	    }
-	    string1 = Tcl_GetStringFromObj(objv[2], &length1);
-	    checkEnd = string2 + length2;
+    if (objv[objc-2]->typePtr == &tclDictType && objv[objc-2]->bytes == NULL){
+	int i, done;
+	Tcl_DictSearch search;
 
-	    if (left) {
-		end = string1 + length1;
-		/*
-		 * The outer loop iterates over the string.  The inner
-		 * loop iterates over the trim characters.  The loops
-		 * terminate as soon as a non-trim character is discovered
-		 * and string1 is left pointing at the first non-trim
-		 * character.
-		 */
+	/*
+	 * We know the type exactly, so all dict operations will succeed for
+	 * sure. This shortens this code quite a bit.
+	 */
 
-		for (p = string1; p < end; p += offset) {
-		    offset = TclUtfToUniChar(p, &ch);
-		    
-		    for (check = string2; ; ) {
-			if (check >= checkEnd) {
-			    p = end;
-			    break;
-			}
-			check += TclUtfToUniChar(check, &trim);
-			if (ch == trim) {
-			    length1 -= offset;
-			    string1 += offset;
-			    break;
-			}
-		    }
-		}
-	    }
-	    if (right) {
-	        end = string1;
+	Tcl_DictObjSize(interp, objv[objc-2], &mapElemc);
+	if (mapElemc == 0) {
+	    /*
+	     * Empty charMap, just return whatever string was given.
+	     */
 
-		/*
-		 * The outer loop iterates over the string.  The inner
-		 * loop iterates over the trim characters.  The loops
-		 * terminate as soon as a non-trim character is discovered
-		 * and length1 marks the last non-trim character.
-		 */
+	    Tcl_SetObjResult(interp, objv[objc-1]);
+	    return TCL_OK;
+	}
 
-		for (p = string1 + length1; p > end; ) {
-		    p = Tcl_UtfPrev(p, string1);
-		    offset = TclUtfToUniChar(p, &ch);
-		    for (check = string2; ; ) {
-		        if (check >= checkEnd) {
-			    p = end;
-			    break;
-			}
-			check += TclUtfToUniChar(check, &trim);
-			if (ch == trim) {
-			    length1 -= offset;
-			    break;
-			}
-		    }
-		}
-	    }
-	    Tcl_SetStringObj(resultPtr, string1, length1);
-	    break;
+	mapElemc *= 2;
+	mapWithDict = 1;
+
+	/*
+	 * Copy the dictionary out into an array; that's the easiest way to
+	 * adapt this code...
+	 */
+
+	mapElemv = (Tcl_Obj **)
+		TclStackAlloc(interp, sizeof(Tcl_Obj *) * mapElemc);
+	Tcl_DictObjFirst(interp, objv[objc-2], &search, mapElemv+0,
+		mapElemv+1, &done);
+	for (i=2 ; i<mapElemc ; i+=2) {
+	    Tcl_DictObjNext(&search, mapElemv+i, mapElemv+i+1, &done);
 	}
-	case STR_TRIMLEFT: {
-	    left = 1;
-	    right = 0;
-	    goto dotrim;
+	Tcl_DictObjDone(&search);
+    } else {
+	if (TclListObjGetElements(interp, objv[objc-2], &mapElemc,
+		&mapElemv) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	case STR_TRIMRIGHT: {
-	    left = 0;
-	    right = 1;
-	    goto dotrim;
+	if (mapElemc == 0) {
+	    /*
+	     * empty charMap, just return whatever string was given.
+	     */
+
+	    Tcl_SetObjResult(interp, objv[objc-1]);
+	    return TCL_OK;
+	} else if (mapElemc & 1) {
+	    /*
+	     * The charMap must be an even number of key/value items.
+	     */
+
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("char map list unbalanced", -1));
+	    return TCL_ERROR;
 	}
-	case STR_WORDEND: {
-	    int cur;
-	    Tcl_UniChar ch;
-	    CONST char *p, *end;
-	    int numChars;
-	    
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string index");
-		return TCL_ERROR;
-	    }
+    }
 
-	    string1 = Tcl_GetStringFromObj(objv[2], &length1);
-	    numChars = Tcl_NumUtfChars(string1, length1);
-	    if (TclGetIntForIndex(interp, objv[3], numChars-1,
-				  &index) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    if (index < 0) {
-		index = 0;
-	    }
-	    if (index < numChars) {
-		p = Tcl_UtfAtIndex(string1, index);
-		end = string1+length1;
-		for (cur = index; p < end; cur++) {
-		    p += TclUtfToUniChar(p, &ch);
-		    if (!Tcl_UniCharIsWordChar(ch)) {
-			break;
+    /*
+     * Take a copy of the source string object if it is the same as the map
+     * string to cut out nasty sharing crashes. [Bug 1018562]
+     */
+
+    if (objv[objc-2] == objv[objc-1]) {
+	sourceObj = Tcl_DuplicateObj(objv[objc-1]);
+	copySource = 1;
+    } else {
+	sourceObj = objv[objc-1];
+    }
+    ustring1 = Tcl_GetUnicodeFromObj(sourceObj, &length1);
+    if (length1 == 0) {
+	/*
+	 * Empty input string, just stop now.
+	 */
+
+	goto done;
+    }
+    end = ustring1 + length1;
+
+    strCmpFn = (nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp);
+
+    /*
+     * Force result to be Unicode
+     */
+
+    resultPtr = Tcl_NewUnicodeObj(ustring1, 0);
+
+    if (mapElemc == 2) {
+	/*
+	 * Special case for one map pair which avoids the extra for loop and
+	 * extra calls to get Unicode data. The algorithm is otherwise
+	 * identical to the multi-pair case. This will be >30% faster on
+	 * larger strings.
+	 */
+
+	int mapLen;
+	Tcl_UniChar *mapString, u2lc;
+
+	ustring2 = Tcl_GetUnicodeFromObj(mapElemv[0], &length2);
+	p = ustring1;
+	if ((length2 > length1) || (length2 == 0)) {
+	    /*
+	     * Match string is either longer than input or empty.
+	     */
+
+	    ustring1 = end;
+	} else {
+	    mapString = Tcl_GetUnicodeFromObj(mapElemv[1], &mapLen);
+	    u2lc = (nocase ? Tcl_UniCharToLower(*ustring2) : 0);
+	    for (; ustring1 < end; ustring1++) {
+		if (((*ustring1 == *ustring2) ||
+			(nocase&&Tcl_UniCharToLower(*ustring1)==u2lc)) &&
+			(length2==1 || strCmpFn(ustring1, ustring2,
+				(unsigned long) length2) == 0)) {
+		    if (p != ustring1) {
+			Tcl_AppendUnicodeToObj(resultPtr, p, ustring1-p);
+			p = ustring1 + length2;
+		    } else {
+			p += length2;
 		    }
+		    ustring1 = p - 1;
+
+		    Tcl_AppendUnicodeToObj(resultPtr, mapString, mapLen);
 		}
-		if (cur == index) {
-		    cur++;
-		}
-	    } else {
-		cur = numChars;
 	    }
-	    Tcl_SetIntObj(resultPtr, cur);
-	    break;
 	}
-	case STR_WORDSTART: {
-	    int cur;
-	    Tcl_UniChar ch;
-	    CONST char *p;
-	    int numChars;
-	    
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "string index");
-		return TCL_ERROR;
-	    }
+    } else {
+	Tcl_UniChar **mapStrings, *u2lc = NULL;
+	int *mapLens;
 
-	    string1 = Tcl_GetStringFromObj(objv[2], &length1);
-	    numChars = Tcl_NumUtfChars(string1, length1);
-	    if (TclGetIntForIndex(interp, objv[3], numChars-1,
-				  &index) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    if (index >= numChars) {
-		index = numChars - 1;
+	/*
+	 * Precompute pointers to the unicode string and length. This saves us
+	 * repeated function calls later, significantly speeding up the
+	 * algorithm. We only need the lowercase first char in the nocase
+	 * case.
+	 */
+
+	mapStrings = (Tcl_UniChar **) TclStackAlloc(interp,
+		mapElemc * 2 * sizeof(Tcl_UniChar *));
+	mapLens = (int *) TclStackAlloc(interp, mapElemc * 2 * sizeof(int));
+	if (nocase) {
+	    u2lc = (Tcl_UniChar *) TclStackAlloc(interp,
+		    mapElemc * sizeof(Tcl_UniChar));
+	}
+	for (index = 0; index < mapElemc; index++) {
+	    mapStrings[index] = Tcl_GetUnicodeFromObj(mapElemv[index],
+		    mapLens+index);
+	    if (nocase && ((index % 2) == 0)) {
+		u2lc[index/2] = Tcl_UniCharToLower(*mapStrings[index]);
 	    }
-	    cur = 0;
-	    if (index > 0) {
-		p = Tcl_UtfAtIndex(string1, index);
-	        for (cur = index; cur >= 0; cur--) {
-		    TclUtfToUniChar(p, &ch);
-		    if (!Tcl_UniCharIsWordChar(ch)) {
-			break;
+	}
+	for (p = ustring1; ustring1 < end; ustring1++) {
+	    for (index = 0; index < mapElemc; index += 2) {
+		/*
+		 * Get the key string to match on.
+		 */
+
+		ustring2 = mapStrings[index];
+		length2 = mapLens[index];
+		if ((length2 > 0) && ((*ustring1 == *ustring2) || (nocase &&
+			(Tcl_UniCharToLower(*ustring1) == u2lc[index/2]))) &&
+			/* Restrict max compare length. */
+			(end-ustring1 >= length2) && ((length2 == 1) ||
+			!strCmpFn(ustring2, ustring1, (unsigned) length2))) {
+		    if (p != ustring1) {
+			/*
+			 * Put the skipped chars onto the result first.
+			 */
+
+			Tcl_AppendUnicodeToObj(resultPtr, p, ustring1-p);
+			p = ustring1 + length2;
+		    } else {
+			p += length2;
 		    }
-		    p = Tcl_UtfPrev(p, string1);
-		}
-		if (cur != index) {
-		    cur += 1;
+
+		    /*
+		     * Adjust len to be full length of matched string.
+		     */
+
+		    ustring1 = p - 1;
+
+		    /*
+		     * Append the map value to the unicode string.
+		     */
+
+		    Tcl_AppendUnicodeToObj(resultPtr,
+			    mapStrings[index+1], mapLens[index+1]);
+		    break;
 		}
 	    }
-	    Tcl_SetIntObj(resultPtr, cur);
-	    break;
 	}
+	if (nocase) {
+	    TclStackFree(interp, u2lc);
+	}
+	TclStackFree(interp, mapLens);
+	TclStackFree(interp, mapStrings);
+    }
+    if (p != ustring1) {
+	/*
+	 * Put the rest of the unmapped chars onto result.
+	 */
+
+	Tcl_AppendUnicodeToObj(resultPtr, p, ustring1 - p);
+    }
+    Tcl_SetObjResult(interp, resultPtr);
+  done:
+    if (mapWithDict) {
+	TclStackFree(interp, mapElemv);
+    }
+    if (copySource) {
+	Tcl_DecrRefCount(sourceObj);
     }
     return TCL_OK;
 }
@@ -2464,11 +2000,11 @@ Tcl_StringObjCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_SubstObjCmd --
+ * StringMatchCmd --
  *
- *	This procedure is invoked to process the "subst" Tcl command.
- *	See the user documentation for details on what it does.  This
- *	command relies on Tcl_SubstObj() for its implementation.
+ *	This procedure is invoked to process the "string match" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
  *	A standard Tcl result.
@@ -2479,94 +2015,49 @@ Tcl_StringObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-int
-Tcl_SubstObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];       	/* Argument objects. */
+static int
+StringMatchCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    static CONST char *substOptions[] = {
-	"-nobackslashes", "-nocommands", "-novariables", (char *) NULL
-    };
-    enum substOptions {
-	SUBST_NOBACKSLASHES,      SUBST_NOCOMMANDS,       SUBST_NOVARS
-    };
-    Tcl_Obj *resultPtr;
-    int optionIndex, flags, i;
+    int nocase = 0;
 
-    /*
-     * Parse command-line options.
-     */
-
-    flags = TCL_SUBST_ALL;
-    for (i = 1; i < (objc-1); i++) {
-	if (Tcl_GetIndexFromObj(interp, objv[i], substOptions,
-		"switch", 0, &optionIndex) != TCL_OK) {
-
-	    return TCL_ERROR;
-	}
-	switch (optionIndex) {
-	    case SUBST_NOBACKSLASHES: {
-		flags &= ~TCL_SUBST_BACKSLASHES;
-		break;
-	    }
-	    case SUBST_NOCOMMANDS: {
-		flags &= ~TCL_SUBST_COMMANDS;
-		break;
-	    }
-	    case SUBST_NOVARS: {
-		flags &= ~TCL_SUBST_VARIABLES;
-		break;
-	    }
-	    default: {
-		panic("Tcl_SubstObjCmd: bad option index to SubstOptions");
-	    }
-	}
-    }
-    if (i != (objc-1)) {
-	Tcl_WrongNumArgs(interp, 1, objv,
-		"?-nobackslashes? ?-nocommands? ?-novariables? string");
+    if (objc < 3 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?-nocase? pattern string");
 	return TCL_ERROR;
     }
 
-    /*
-     * Perform the substitution.
-     */
-    resultPtr = Tcl_SubstObj(interp, objv[i], flags);
+    if (objc == 4) {
+	int length;
+	const char *string = TclGetStringFromObj(objv[1], &length);
 
-    if (resultPtr == NULL) {
-	return TCL_ERROR;
+	if ((length > 1) &&
+	    strncmp(string, "-nocase", (size_t) length) == 0) {
+	    nocase = TCL_MATCH_NOCASE;
+	} else {
+	    Tcl_AppendResult(interp, "bad option \"", string,
+		    "\": must be -nocase", NULL);
+	    return TCL_ERROR;
+	}
     }
-    Tcl_SetObjResult(interp, resultPtr);
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(
+		TclStringMatchObj(objv[objc-1], objv[objc-2], nocase)));
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_SubstObj --
- *
- *	This function performs the substitutions specified on the
- *	given string as described in the user documentation for the
- *	"subst" Tcl command.  This code is heavily based on an
- *	implementation by Andrew Payne.  Note that if a command
- *	substitution returns TCL_CONTINUE or TCL_RETURN from its
- *	evaluation and is not completely well-formed, the results are
- *	not defined (or at least hard to characterise.)  This fault
- *	will be fixed at some point, but the cost of the only sane
- *	fix (well-formedness check first) is such that you need to
- *	"precompile and cache" to stop everyone from being hit with
- *	the consequences every time through.  Note that the current
- *	behaviour is not a security hole; it just restarts parsing
- *	the string following the substitution in a mildly surprising
- *	place, and it is a very bad idea to count on this remaining
- *	the same in future...
+ * StringRangeCmd --
+ *
+ *	This procedure is invoked to process the "string range" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	A Tcl_Obj* containing the substituted string, or NULL to
- *	indicate that an error occurred.
+ *	A standard Tcl result.
  *
  * Side effects:
  *	See the user documentation.
@@ -2574,144 +2065,77 @@ Tcl_SubstObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-Tcl_Obj *
-Tcl_SubstObj(interp, objPtr, flags)
-    Tcl_Interp *interp;
-    Tcl_Obj *objPtr;
-    int flags;
+static int
+StringRangeCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Obj *resultObj;
-    char *p, *old;
-    int length;
+    const unsigned char *string;
+    int length, first, last;
 
-    old = p = Tcl_GetStringFromObj(objPtr, &length);
-    resultObj = Tcl_NewStringObj("", 0);
-    while (length) {
-	switch (*p) {
-	case '\\':
-	    if (flags & TCL_SUBST_BACKSLASHES) {
-		char buf[TCL_UTF_MAX];
-		int count;
-
-		if (p != old) {
-		    Tcl_AppendToObj(resultObj, old, p-old);
-		}
-		Tcl_AppendToObj(resultObj, buf,
-				TclParseBackslash(p, length, &count, buf));
-		p += count; length -= count;
-		old = p;
-	    } else {
-		p++; length--;
-	    }
-	    break;
+    if (objc != 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string first last");
+	return TCL_ERROR;
+    }
 
-	case '$':
-	    if (flags & TCL_SUBST_VARIABLES) {
-		Tcl_Parse parse;
-		int code;
+    /*
+     * If we have a ByteArray object, avoid indexing in the Utf string since
+     * the byte array contains one byte per character. Otherwise, use the
+     * Unicode string rep to get the range.
+     */
 
-		/*
-		 * Code is simpler overall if we (effectively) inline
-		 * Tcl_ParseVar, particularly as that allows us to use
-		 * a non-string interface when we come to appending
-		 * the variable contents to the result object.  There
-		 * are a few other optimisations that doing this
-		 * enables (like being able to continue the run of
-		 * unsubstituted characters straight through if a '$'
-		 * does not precede a variable name.)
-		 */
-		if (Tcl_ParseVarName(interp, p, length, &parse, 0) != TCL_OK) {
-		    goto errorResult;
-		}
-		if (parse.numTokens == 1) {
-		    /*
-		     * There isn't a variable name after all: the $ is
-		     * just a $.
-		     */
-		    p++; length--;
-		    break;
-		}
-		if (p != old) {
-		    Tcl_AppendToObj(resultObj, old, p-old);
-		}
-		p += parse.tokenPtr->size;
-		length -= parse.tokenPtr->size;
-		code = Tcl_EvalTokensStandard(interp, parse.tokenPtr,
-		        parse.numTokens);
-		if (code == TCL_ERROR) {
-		    goto errorResult;
-		}
-		if (code == TCL_BREAK) {
-		    Tcl_ResetResult(interp);
-		    return resultObj;
-		}
-		if (code != TCL_CONTINUE) {
-		    Tcl_AppendObjToObj(resultObj, Tcl_GetObjResult(interp));
-		}
-		Tcl_ResetResult(interp);
-		old = p;
-	    } else {
-		p++; length--;
-	    }
-	    break;
+    if (objv[1]->typePtr == &tclByteArrayType) {
+	string = Tcl_GetByteArrayFromObj(objv[1], &length);
+	length--;
+    } else {
+	/*
+	 * Get the length in actual characters.
+	 */
 
-	case '[':
-	    if (flags & TCL_SUBST_COMMANDS) {
-		Interp *iPtr = (Interp *) interp;
-		int code;
+	string = NULL;
+	length = Tcl_GetCharLength(objv[1]) - 1;
+    }
 
-		if (p != old) {
-		    Tcl_AppendToObj(resultObj, old, p-old);
-		}
-		iPtr->evalFlags = TCL_BRACKET_TERM;
-		iPtr->numLevels++;
-		code = TclInterpReady(interp);
-		if (code == TCL_OK) {
-		    code = Tcl_EvalEx(interp, p+1, length-1, 0);
-		}
-		iPtr->numLevels--;
-		switch (code) {
-		case TCL_ERROR:
-		    goto errorResult;
-		case TCL_BREAK:
-		    Tcl_ResetResult(interp);
-		    return resultObj;
-		default:
-		    Tcl_AppendObjToObj(resultObj, Tcl_GetObjResult(interp));
-		case TCL_CONTINUE:
-		    Tcl_ResetResult(interp);
-		    old = p = (p+1 + iPtr->termOffset + 1);
-		    length -= (iPtr->termOffset + 2);
-		}
-	    } else {
-		p++; length--;
-	    }
-	    break;
-	default:
-	    p++; length--;
-	    break;
-	}
+    if (TclGetIntForIndexM(interp, objv[2], length, &first) != TCL_OK ||
+	    TclGetIntForIndexM(interp, objv[3], length, &last) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (first < 0) {
+	first = 0;
     }
-    if (p != old) {
-	Tcl_AppendToObj(resultObj, old, p-old);
+    if (last >= length) {
+	last = length;
     }
-    return resultObj;
+    if (last >= first) {
+	if (string != NULL) {
+	    /*
+	     * Reread the string to prevent shimmering nasties.
+	     */
 
- errorResult:
-    Tcl_DecrRefCount(resultObj);
-    return NULL;
+	    string = Tcl_GetByteArrayFromObj(objv[1], &length);
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewByteArrayObj(string+first, last - first + 1));
+	} else {
+	    Tcl_SetObjResult(interp, Tcl_GetRange(objv[1], first, last));
+	}
+    }
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_SwitchObjCmd --
+ * StringReptCmd --
  *
- *	This object-based procedure is invoked to process the "switch" Tcl
- *	command. See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "string repeat" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	A standard Tcl object result.
+ *	A standard Tcl result.
  *
  * Side effects:
  *	See the user documentation.
@@ -2719,263 +2143,159 @@ Tcl_SubstObj(interp, objPtr, flags)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-int
-Tcl_SwitchObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+static int
+StringReptCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int i, j, index, mode, matched, result, splitObjs;
-    char *string, *pattern;
-    Tcl_Obj *stringObj;
-    Tcl_Obj *CONST *savedObjv = objv;
-#ifdef TCL_TIP280
-    Interp*  iPtr  = (Interp*) interp;
-    int      pc    = 0;
-    int      bidx  = 0;    /* Index of body argument */
-    Tcl_Obj* blist = NULL; /* List obj which is the body */
-    CmdFrame ctx;          /* Copy of the topmost cmdframe,
-			    * to allow us to mess with the
-			    * line information */
-#endif
-    static CONST char *options[] = {
-	"-exact",	"-glob",	"-regexp",	"--", 
-	NULL
-    };
-    enum options {
-	OPT_EXACT,	OPT_GLOB,	OPT_REGEXP,	OPT_LAST
-    };
+    const char *string1;
+    char *string2;
+    int count, index, length1, length2;
+    Tcl_Obj *resultPtr;
 
-    mode = OPT_EXACT;
-    for (i = 1; i < objc; i++) {
-	string = Tcl_GetString(objv[i]);
-	if (string[0] != '-') {
-	    break;
-	}
-	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, 
-		&index) != TCL_OK) {
-	    return TCL_ERROR;
-	}
-	if (index == OPT_LAST) {
-	    i++;
-	    break;
-	}
-	mode = index;
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string count");
+	return TCL_ERROR;
     }
 
-    if (objc - i < 2) {
-	Tcl_WrongNumArgs(interp, 1, objv,
-		"?switches? string pattern body ... ?default body?");
+    if (TclGetIntFromObj(interp, objv[2], &count) != TCL_OK) {
 	return TCL_ERROR;
     }
 
-    stringObj = objv[i];
-    objc -= i + 1;
-    objv += i + 1;
-#ifdef TCL_TIP280
-    bidx = i+1; /* First after the match string */
-#endif
-
     /*
-     * If all of the pattern/command pairs are lumped into a single
-     * argument, split them out again.
-     *
-     * TIP #280: Determine the lines the words in the list start at, based on
-     * the same data for the list word itself. The cmdFramePtr line information
-     * is manipulated directly.
+     * Check for cases that allow us to skip copying stuff.
      */
 
-    splitObjs = 0;
-    if (objc == 1) {
-	Tcl_Obj **listv;
-#ifdef TCL_TIP280
-	blist = objv[0];
-#endif
-	if (Tcl_ListObjGetElements(interp, objv[0], &objc, &listv) != TCL_OK) {
-	    return TCL_ERROR;
-	}
+    if (count == 1) {
+	Tcl_SetObjResult(interp, objv[1]);
+	goto done;
+    } else if (count < 1) {
+	goto done;
+    }
+    string1 = TclGetStringFromObj(objv[1], &length1);
+    if (length1 <= 0) {
+	goto done;
+    }
 
-	/*
-	 * Ensure that the list is non-empty.
-	 */
+    /*
+     * Only build up a string that has data. Instead of building it up with
+     * repeated appends, we just allocate the necessary space once and copy
+     * the string value in.
+     *
+     * We have to worry about overflow [Bugs 714106, 2561746].
+     * At this point we know 1 <= length1 <= INT_MAX and 2 <= count <= INT_MAX.
+     * We need to keep 2 <= length2 <= INT_MAX.
+     */
 
-	if (objc < 1) {
-	    Tcl_WrongNumArgs(interp, 1, savedObjv,
-		    "?switches? string {pattern body ... ?default body?}");
-	    return TCL_ERROR;
-	}
-	objv = listv;
-	splitObjs = 1;
+    if (count > (INT_MAX / length1)) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"result exceeds max size for a Tcl value (%d bytes)", INT_MAX));
+	return TCL_ERROR;
     }
+    length2 = length1 * count;
 
     /*
-     * Complain if there is an odd number of words in the list of
-     * patterns and bodies.
+     * Include space for the NUL.
      */
 
-    if (objc % 2) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendResult(interp, "extra switch pattern with no body", NULL);
-
+    string2 = attemptckalloc((unsigned) length2 + 1);
+    if (string2 == NULL) {
 	/*
-	 * Check if this can be due to a badly placed comment
-	 * in the switch block.
-	 *
-	 * The following is an heuristic to detect the infamous
-	 * "comment in switch" error: just check if a pattern
-	 * begins with '#'.
+	 * Alloc failed. Note that in this case we try to do an error message
+	 * since this is a case that's most likely when the alloc is large and
+	 * that's easy to do with this API. Note that if we fail allocating a
+	 * short string, this will likely keel over too (and fatally).
 	 */
 
-	if (splitObjs) {
-	    for (i=0 ; i<objc ; i+=2) {
-		if (Tcl_GetString(objv[i])[0] == '#') {
-		    Tcl_AppendResult(interp, ", this may be due to a ",
-			    "comment incorrectly placed outside of a ",
-			    "switch body - see the \"switch\" ",
-			    "documentation", NULL);
-		    break;
-		}
-	    }
-	}
-
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"string size overflow, out of memory allocating %u bytes",
+		length2 + 1));
 	return TCL_ERROR;
     }
+    for (index = 0; index < count; index++) {
+	memcpy(string2 + (length1 * index), string1, (size_t) length1);
+    }
+    string2[length2] = '\0';
 
     /*
-     * Complain if the last body is a continuation.  Note that this
-     * check assumes that the list is non-empty!
+     * We have to directly assign this instead of using Tcl_SetStringObj (and
+     * indirectly TclInitStringRep) because that makes another copy of the
+     * data.
      */
 
-    if (strcmp(Tcl_GetString(objv[objc-1]), "-") == 0) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendResult(interp, "no body specified for pattern \"",
-		Tcl_GetString(objv[objc-2]), "\"", NULL);
-	return TCL_ERROR;
-    }
-
-    for (i = 0; i < objc; i += 2) {
-	/*
-	 * See if the pattern matches the string.
-	 */
-
-	pattern = Tcl_GetString(objv[i]);
-
-	matched = 0;
-	if ((i == objc - 2) 
-		&& (*pattern == 'd') 
-		&& (strcmp(pattern, "default") == 0)) {
-	    matched = 1;
-	} else {
-	    switch (mode) {
-		case OPT_EXACT:
-		    matched = (strcmp(Tcl_GetString(stringObj), pattern) == 0);
-		    break;
-		case OPT_GLOB:
-		    matched = Tcl_StringMatch(Tcl_GetString(stringObj),
-			    pattern);
-		    break;
-		case OPT_REGEXP:
-		    matched = Tcl_RegExpMatchObj(interp, stringObj, objv[i]);
-		    if (matched < 0) {
-			return TCL_ERROR;
-		    }
-		    break;
-	    }
-	}
-	if (matched == 0) {
-	    continue;
-	}
+    TclNewObj(resultPtr);
+    resultPtr->bytes = string2;
+    resultPtr->length = length2;
+    Tcl_SetObjResult(interp, resultPtr);
 
-	/*
-	 * We've got a match. Find a body to execute, skipping bodies
-	 * that are "-".
-	 *
-	 * TIP#280: Now is also the time to determine a line number for the
-	 * single-word case.
-	 */
+  done:
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringRplcCmd --
+ *
+ *	This procedure is invoked to process the "string replace" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
-#ifdef TCL_TIP280
-	ctx = *iPtr->cmdFramePtr;
+static int
+StringRplcCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_UniChar *ustring;
+    int first, last, length;
 
-	if (splitObjs) {
-	    /* We have to perform the GetSrc and other type dependent handling
-	     * of the frame here because we are munging with the line numbers,
-	     * something the other commands like if, etc. are not doing. Them
-	     * are fine with simply passing the CmdFrame through and having
-	     * the special handling done in 'info frame', or the bc compiler
-	     */
+    if (objc < 4 || objc > 5) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string first last ?string?");
+	return TCL_ERROR;
+    }
 
-	    if (ctx.type == TCL_LOCATION_BC) {
-		/* Note: Type BC => ctx.data.eval.path    is not used.
-		 *                  ctx.data.tebc.codePtr is used instead.
-		 */
-		TclGetSrcInfoForPc (&ctx);
-		pc = 1;
-		/* The line information in the cmdFrame is now a copy we do
-		 * not own */
-	    }
+    ustring = Tcl_GetUnicodeFromObj(objv[1], &length);
+    length--;
 
-	    if (ctx.type == TCL_LOCATION_SOURCE) {
-		int bline = ctx.line [bidx];
-		if (bline >= 0) {
-		    ctx.line  = (int*) ckalloc (objc * sizeof(int));
-		    ctx.nline = objc;
+    if (TclGetIntForIndexM(interp, objv[2], length, &first) != TCL_OK ||
+	    TclGetIntForIndexM(interp, objv[3], length, &last) != TCL_OK){
+	return TCL_ERROR;
+    }
 
-		    ListLines (blist, bline, objc, ctx.line, objv);
-		} else {
-		    int k;
-		    /* Dynamic code word ... All elements are relative to themselves */
+    if ((last < first) || (last < 0) || (first > length)) {
+	Tcl_SetObjResult(interp, objv[1]);
+    } else {
+	Tcl_Obj *resultPtr;
 
-		    ctx.line  = (int*) ckalloc (objc * sizeof(int));
-		    ctx.nline = objc;
-		    for (k=0; k < objc; k++) {ctx.line[k] = -1;}
-		}
-	    } else {
-		int k;
-		/* Anything else ... No information, or dynamic ... */
+	ustring = Tcl_GetUnicodeFromObj(objv[1], &length);
+	length--;
 
-		ctx.line  = (int*) ckalloc (objc * sizeof(int));
-		ctx.nline = objc;
-		for (k=0; k < objc; k++) {ctx.line[k] = -1;}
-	    }
+	if (first < 0) {
+	    first = 0;
 	}
-#endif
 
-	for (j = i + 1; ; j += 2) {
-	    if (j >= objc) {
-		/*
-		 * This shouldn't happen since we've checked that the
-		 * last body is not a continuation...
-		 */
-		panic("fall-out when searching for body to match pattern");
-	    }
-	    if (strcmp(Tcl_GetString(objv[j]), "-") != 0) {
-		break;
-	    }
+	resultPtr = Tcl_NewUnicodeObj(ustring, first);
+	if (objc == 5) {
+	    Tcl_AppendObjToObj(resultPtr, objv[4]);
 	}
-#ifndef TCL_TIP280
-	result = Tcl_EvalObjEx(interp, objv[j], 0);
-#else
-	/* TIP #280. Make invoking context available to switch branch */
-	result = TclEvalObjEx(interp, objv[j], 0, &ctx, splitObjs ? j : bidx+j);
-	if (splitObjs) {
-	    ckfree ((char*) ctx.line);
-	    if (pc && (ctx.type == TCL_LOCATION_SOURCE)) {
-		/* Death of SrcInfo reference */
-		Tcl_DecrRefCount (ctx.data.eval.path);
-	    }
-	}
-#endif
-	if (result == TCL_ERROR) {
-	    char msg[100 + TCL_INTEGER_SPACE];
-
-	    sprintf(msg, "\n    (\"%.50s\" arm line %d)", pattern,
-		    interp->errorLine);
-	    Tcl_AddObjErrorInfo(interp, msg, -1);
+	if (last < length) {
+	    Tcl_AppendUnicodeToObj(resultPtr, ustring + last + 1,
+		    length - last);
 	}
-	return result;
+	Tcl_SetObjResult(interp, resultPtr);
     }
     return TCL_OK;
 }
@@ -2983,13 +2303,14 @@ Tcl_SwitchObjCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_TimeObjCmd --
+ * StringRevCmd --
  *
- *	This object-based procedure is invoked to process the "time" Tcl
- *	command.  See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "string reverse" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	A standard Tcl object result.
+ *	A standard Tcl result.
  *
  * Side effects:
  *	See the user documentation.
@@ -2997,1938 +2318,1622 @@ Tcl_SwitchObjCmd(dummy, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-int
-Tcl_TimeObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+static int
+StringRevCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register Tcl_Obj *objPtr;
-    Tcl_Obj *objs[4];
-    register int i, result;
-    int count;
-    double totalMicroSec;
-    Tcl_Time start, stop;
-
-    if (objc == 2) {
-	count = 1;
-    } else if (objc == 3) {
-	result = Tcl_GetIntFromObj(interp, objv[2], &count);
-	if (result != TCL_OK) {
-	    return result;
-	}
-    } else {
-	Tcl_WrongNumArgs(interp, 1, objv, "command ?count?");
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string");
 	return TCL_ERROR;
     }
-    
-    objPtr = objv[1];
-    i = count;
-    Tcl_GetTime(&start);
-    while (i-- > 0) {
-	result = Tcl_EvalObjEx(interp, objPtr, 0);
-	if (result != TCL_OK) {
-	    return result;
-	}
-    }
-    Tcl_GetTime(&stop);
-    
-    totalMicroSec = ( ( (double) ( stop.sec - start.sec ) ) * 1.0e6
-		      + ( stop.usec - start.usec ) );
-    if (count <= 1) {
-	/* Use int obj since we know time is not fractional [Bug 1202178] */
-	objs[0] = Tcl_NewIntObj((count <= 0) ? 0 : (int) totalMicroSec);
-    } else {
-	objs[0] = Tcl_NewDoubleObj(totalMicroSec/count);
-    }
-    objs[1] = Tcl_NewStringObj("microseconds", -1);
-    objs[2] = Tcl_NewStringObj("per", -1);
-    objs[3] = Tcl_NewStringObj("iteration", -1);
-    Tcl_SetObjResult(interp, Tcl_NewListObj(4, objs));
+
+    Tcl_SetObjResult(interp, TclStringObjReverse(objv[1]));
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_TraceObjCmd --
- *
- *	This procedure is invoked to process the "trace" Tcl command.
- *	See the user documentation for details on what it does.
- *	
- *	Standard syntax as of Tcl 8.4 is
- *	
- *	 trace {add|info|remove} {command|variable} name ops cmd
+ * StringStartCmd --
  *
+ *	This procedure is invoked to process the "string wordstart" Tcl
+ *	command. See the user documentation for details on what it does. Note
+ *	that this command only functions correctly on properly formed Tcl UTF
+ *	strings.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
  *	See the user documentation.
+ *
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-int
-Tcl_TraceObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+static int
+StringStartCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int optionIndex;
-    char *name, *flagOps, *p;
-    /* Main sub commands to 'trace' */
-    static CONST char *traceOptions[] = {
-	"add", "info", "remove", 
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-	"variable", "vdelete", "vinfo", 
-#endif
-	(char *) NULL
-    };
-    /* 'OLD' options are pre-Tcl-8.4 style */
-    enum traceOptions {
-	TRACE_ADD, TRACE_INFO, TRACE_REMOVE, 
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-	TRACE_OLD_VARIABLE, TRACE_OLD_VDELETE, TRACE_OLD_VINFO
-#endif
-    };
+    Tcl_UniChar ch;
+    const char *p, *string;
+    int cur, index, length, numChars;
 
-    if (objc < 2) {
-	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string index");
 	return TCL_ERROR;
     }
 
-    if (Tcl_GetIndexFromObj(interp, objv[1], traceOptions,
-		"option", 0, &optionIndex) != TCL_OK) {
+    string = TclGetStringFromObj(objv[1], &length);
+    numChars = Tcl_NumUtfChars(string, length);
+    if (TclGetIntForIndexM(interp, objv[2], numChars-1, &index) != TCL_OK) {
 	return TCL_ERROR;
     }
-    switch ((enum traceOptions) optionIndex) {
-	case TRACE_ADD: 
-	case TRACE_REMOVE:
-	case TRACE_INFO: {
-	    /* 
-	     * All sub commands of trace add/remove must take at least
-	     * one more argument.  Beyond that we let the subcommand itself
-	     * control the argument structure.
-	     */
-	    int typeIndex;
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "type ?arg arg ...?");
-		return TCL_ERROR;
-	    }
-	    if (Tcl_GetIndexFromObj(interp, objv[2], traceTypeOptions,
-			"option", 0, &typeIndex) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	    return (traceSubCmds[typeIndex])(interp, optionIndex, objc, objv);
-	}
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-        case TRACE_OLD_VARIABLE:
-	case TRACE_OLD_VDELETE: {
-	    Tcl_Obj *copyObjv[6];
-	    Tcl_Obj *opsList;
-	    int code, numFlags;
-
-	    if (objc != 5) {
-		Tcl_WrongNumArgs(interp, 2, objv, "name ops command");
-		return TCL_ERROR;
-	    }
-
-	    opsList = Tcl_NewObj();
-	    Tcl_IncrRefCount(opsList);
-	    flagOps = Tcl_GetStringFromObj(objv[3], &numFlags);
-	    if (numFlags == 0) {
-		Tcl_DecrRefCount(opsList);
-		goto badVarOps;
-	    }
-	    for (p = flagOps; *p != 0; p++) {
-		if (*p == 'r') {
-		    Tcl_ListObjAppendElement(NULL, opsList,
-			    Tcl_NewStringObj("read", -1));
-		} else if (*p == 'w') {
-		    Tcl_ListObjAppendElement(NULL, opsList,
-			    Tcl_NewStringObj("write", -1));
-		} else if (*p == 'u') {
-		    Tcl_ListObjAppendElement(NULL, opsList,
-			    Tcl_NewStringObj("unset", -1));
-		} else if (*p == 'a') {
-		    Tcl_ListObjAppendElement(NULL, opsList,
-			    Tcl_NewStringObj("array", -1));
-		} else {
-		    Tcl_DecrRefCount(opsList);
-		    goto badVarOps;
-		}
-	    }
-	    copyObjv[0] = NULL;
-	    memcpy(copyObjv+1, objv, objc*sizeof(Tcl_Obj *));
-	    copyObjv[4] = opsList;
-	    if  (optionIndex == TRACE_OLD_VARIABLE) {
-		code = (traceSubCmds[2])(interp,TRACE_ADD,objc+1,copyObjv);
-	    } else {
-		code = (traceSubCmds[2])(interp,TRACE_REMOVE,objc+1,copyObjv);
+    string = TclGetStringFromObj(objv[1], &length);
+    if (index >= numChars) {
+	index = numChars - 1;
+    }
+    cur = 0;
+    if (index > 0) {
+	p = Tcl_UtfAtIndex(string, index);
+	for (cur = index; cur >= 0; cur--) {
+	    TclUtfToUniChar(p, &ch);
+	    if (!Tcl_UniCharIsWordChar(ch)) {
+		break;
 	    }
-	    Tcl_DecrRefCount(opsList);
-	    return code;
+	    p = Tcl_UtfPrev(p, string);
 	}
-	case TRACE_OLD_VINFO: {
-	    ClientData clientData;
-	    char ops[5];
-	    Tcl_Obj *resultListPtr, *pairObjPtr, *elemObjPtr;
-
-	    if (objc != 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "name");
-		return TCL_ERROR;
-	    }
-	    resultListPtr = Tcl_GetObjResult(interp);
-	    clientData = 0;
-	    name = Tcl_GetString(objv[2]);
-	    while ((clientData = Tcl_VarTraceInfo(interp, name, 0,
-		    TraceVarProc, clientData)) != 0) {
-
-		TraceVarInfo *tvarPtr = (TraceVarInfo *) clientData;
-
-		pairObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		p = ops;
-		if (tvarPtr->flags & TCL_TRACE_READS) {
-		    *p = 'r';
-		    p++;
-		}
-		if (tvarPtr->flags & TCL_TRACE_WRITES) {
-		    *p = 'w';
-		    p++;
-		}
-		if (tvarPtr->flags & TCL_TRACE_UNSETS) {
-		    *p = 'u';
-		    p++;
-		}
-		if (tvarPtr->flags & TCL_TRACE_ARRAY) {
-		    *p = 'a';
-		    p++;
-		}
-		*p = '\0';
-
-		/*
-		 * Build a pair (2-item list) with the ops string as
-		 * the first obj element and the tvarPtr->command string
-		 * as the second obj element.  Append the pair (as an
-		 * element) to the end of the result object list.
-		 */
-
-		elemObjPtr = Tcl_NewStringObj(ops, -1);
-		Tcl_ListObjAppendElement(NULL, pairObjPtr, elemObjPtr);
-		elemObjPtr = Tcl_NewStringObj(tvarPtr->command, -1);
-		Tcl_ListObjAppendElement(NULL, pairObjPtr, elemObjPtr);
-		Tcl_ListObjAppendElement(interp, resultListPtr, pairObjPtr);
-	    }
-	    Tcl_SetObjResult(interp, resultListPtr);
-	    break;
+	if (cur != index) {
+	    cur += 1;
 	}
-#endif /* TCL_REMOVE_OBSOLETE_TRACES */
     }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(cur));
     return TCL_OK;
-
-    badVarOps:
-    Tcl_AppendResult(interp, "bad operations \"", flagOps,
-	    "\": should be one or more of rwua", (char *) NULL);
-    return TCL_ERROR;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- * TclTraceExecutionObjCmd --
+ * StringEndCmd --
  *
- *	Helper function for Tcl_TraceObjCmd; implements the
- *	[trace {add|remove|info} execution ...] subcommands.
- *	See the user documentation for details on what these do.
+ *	This procedure is invoked to process the "string wordend" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	Standard Tcl result.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Depends on the operation (add, remove, or info) being performed;
- *	may add or remove command traces on a command.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclTraceExecutionObjCmd(interp, optionIndex, objc, objv)
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int optionIndex;			/* Add, info or remove */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+static int
+StringEndCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int commandLength, index;
-    char *name, *command;
-    size_t length;
-    enum traceOptions { TRACE_ADD, TRACE_INFO, TRACE_REMOVE };
-    static CONST char *opStrings[] = { "enter", "leave", 
-                                 "enterstep", "leavestep", (char *) NULL };
-    enum operations { TRACE_EXEC_ENTER, TRACE_EXEC_LEAVE,
-                      TRACE_EXEC_ENTER_STEP, TRACE_EXEC_LEAVE_STEP };
-    
-    switch ((enum traceOptions) optionIndex) {
-	case TRACE_ADD: 
-	case TRACE_REMOVE: {
-	    int flags = 0;
-	    int i, listLen, result;
-	    Tcl_Obj **elemPtrs;
-	    if (objc != 6) {
-		Tcl_WrongNumArgs(interp, 3, objv, "name opList command");
-		return TCL_ERROR;
-	    }
-	    /*
-	     * Make sure the ops argument is a list object; get its length and
-	     * a pointer to its array of element pointers.
-	     */
-
-	    result = Tcl_ListObjGetElements(interp, objv[4], &listLen,
-		    &elemPtrs);
-	    if (result != TCL_OK) {
-		return result;
-	    }
-	    if (listLen == 0) {
-		Tcl_SetResult(interp, "bad operation list \"\": must be "
-	          "one or more of enter, leave, enterstep, or leavestep", 
-		  TCL_STATIC);
-		return TCL_ERROR;
-	    }
-	    for (i = 0; i < listLen; i++) {
-		if (Tcl_GetIndexFromObj(interp, elemPtrs[i], opStrings,
-			"operation", TCL_EXACT, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		switch ((enum operations) index) {
-		    case TRACE_EXEC_ENTER:
-			flags |= TCL_TRACE_ENTER_EXEC;
-			break;
-		    case TRACE_EXEC_LEAVE:
-			flags |= TCL_TRACE_LEAVE_EXEC;
-			break;
-		    case TRACE_EXEC_ENTER_STEP:
-			flags |= TCL_TRACE_ENTER_DURING_EXEC;
-			break;
-		    case TRACE_EXEC_LEAVE_STEP:
-			flags |= TCL_TRACE_LEAVE_DURING_EXEC;
-			break;
-		}
-	    }
-	    command = Tcl_GetStringFromObj(objv[5], &commandLength);
-	    length = (size_t) commandLength;
-	    if ((enum traceOptions) optionIndex == TRACE_ADD) {
-		TraceCommandInfo *tcmdPtr;
-		tcmdPtr = (TraceCommandInfo *) ckalloc((unsigned)
-			(sizeof(TraceCommandInfo) - sizeof(tcmdPtr->command)
-				+ length + 1));
-		tcmdPtr->flags = flags;
-		tcmdPtr->stepTrace = NULL;
-		tcmdPtr->startLevel = 0;
-		tcmdPtr->startCmd = NULL;
-		tcmdPtr->length = length;
-		tcmdPtr->refCount = 1;
-		flags |= TCL_TRACE_DELETE;
-		if (flags & (TCL_TRACE_ENTER_DURING_EXEC |
-			     TCL_TRACE_LEAVE_DURING_EXEC)) {
-		    flags |= (TCL_TRACE_ENTER_EXEC | 
-			      TCL_TRACE_LEAVE_EXEC);
-		}
-		memcpy(tcmdPtr->command, command, length + 1);
-		name = Tcl_GetString(objv[3]);
-		if (Tcl_TraceCommand(interp, name, flags, TraceCommandProc,
-			(ClientData) tcmdPtr) != TCL_OK) {
-		    ckfree((char *) tcmdPtr);
-		    return TCL_ERROR;
-		}
-	    } else {
-		/*
-		 * Search through all of our traces on this command to
-		 * see if there's one with the given command.  If so, then
-		 * delete the first one that matches.
-		 */
-		
-		TraceCommandInfo *tcmdPtr;
-		ClientData clientData = NULL;
-		name = Tcl_GetString(objv[3]);
-
-		/* First ensure the name given is valid */
-		if (Tcl_FindCommand(interp, name, NULL, 
-				    TCL_LEAVE_ERR_MSG) == NULL) {
-		    return TCL_ERROR;
-		}
-				    
-		while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
-			TraceCommandProc, clientData)) != NULL) {
-		    tcmdPtr = (TraceCommandInfo *) clientData;
-		    /* 
-		     * In checking the 'flags' field we must remove any
-		     * extraneous flags which may have been temporarily
-		     * added by various pieces of the trace mechanism.
-		     */
-		    if ((tcmdPtr->length == length)
-			    && ((tcmdPtr->flags & (TCL_TRACE_ANY_EXEC | 
-						   TCL_TRACE_RENAME | 
-						   TCL_TRACE_DELETE)) == flags)
-			    && (strncmp(command, tcmdPtr->command,
-				    (size_t) length) == 0)) {
-			flags |= TCL_TRACE_DELETE;
-			if (flags & (TCL_TRACE_ENTER_DURING_EXEC |
-				     TCL_TRACE_LEAVE_DURING_EXEC)) {
-			    flags |= (TCL_TRACE_ENTER_EXEC | 
-				      TCL_TRACE_LEAVE_EXEC);
-			}
-			Tcl_UntraceCommand(interp, name,
-				flags, TraceCommandProc, clientData);
-			if (tcmdPtr->stepTrace != NULL) {
-			    /* 
-			     * We need to remove the interpreter-wide trace 
-			     * which we created to allow 'step' traces.
-			     */
-			    Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
-			    tcmdPtr->stepTrace = NULL;
-                            if (tcmdPtr->startCmd != NULL) {
-			        ckfree((char *)tcmdPtr->startCmd);
-			    }
-			}
-			if (tcmdPtr->flags & TCL_TRACE_EXEC_IN_PROGRESS) {
-			    /* Postpone deletion */
-			    tcmdPtr->flags = 0;
-			}
-			tcmdPtr->refCount--;
-			if (tcmdPtr->refCount < 0) {
-			    Tcl_Panic("TclTraceExecutionObjCmd: negative TraceCommandInfo refCount");
-			}
-			if (tcmdPtr->refCount == 0) {
-			    ckfree((char*)tcmdPtr);
-			}
-			break;
-		    }
-		}
-	    }
-	    break;
-	}
-	case TRACE_INFO: {
-	    ClientData clientData;
-	    Tcl_Obj *resultListPtr, *eachTraceObjPtr, *elemObjPtr;
-	    if (objc != 4) {
-		Tcl_WrongNumArgs(interp, 3, objv, "name");
-		return TCL_ERROR;
-	    }
-
-	    clientData = NULL;
-	    name = Tcl_GetString(objv[3]);
-	    
-	    /* First ensure the name given is valid */
-	    if (Tcl_FindCommand(interp, name, NULL, 
-				TCL_LEAVE_ERR_MSG) == NULL) {
-		return TCL_ERROR;
-	    }
-				
-	    resultListPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-	    while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
-		    TraceCommandProc, clientData)) != NULL) {
-		int numOps = 0;
-
-		TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+    Tcl_UniChar ch;
+    const char *p, *end, *string;
+    int cur, index, length, numChars;
 
-		/*
-		 * Build a list with the ops list as the first obj
-		 * element and the tcmdPtr->command string as the
-		 * second obj element.  Append this list (as an
-		 * element) to the end of the result object list.
-		 */
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string index");
+	return TCL_ERROR;
+    }
 
-		elemObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		Tcl_IncrRefCount(elemObjPtr);
-		if (tcmdPtr->flags & TCL_TRACE_ENTER_EXEC) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("enter",5));
-		}
-		if (tcmdPtr->flags & TCL_TRACE_LEAVE_EXEC) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("leave",5));
-		}
-		if (tcmdPtr->flags & TCL_TRACE_ENTER_DURING_EXEC) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("enterstep",9));
-		}
-		if (tcmdPtr->flags & TCL_TRACE_LEAVE_DURING_EXEC) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("leavestep",9));
-		}
-		Tcl_ListObjLength(NULL, elemObjPtr, &numOps);
-		if (0 == numOps) {
-		    Tcl_DecrRefCount(elemObjPtr);
-                    continue;
-                }
-		eachTraceObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
-		Tcl_DecrRefCount(elemObjPtr);
-		elemObjPtr = NULL;
-		
-		Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, 
-			Tcl_NewStringObj(tcmdPtr->command, -1));
-		Tcl_ListObjAppendElement(interp, resultListPtr,
-			eachTraceObjPtr);
+    string = TclGetStringFromObj(objv[1], &length);
+    numChars = Tcl_NumUtfChars(string, length);
+    if (TclGetIntForIndexM(interp, objv[2], numChars-1, &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    string = TclGetStringFromObj(objv[1], &length);
+    if (index < 0) {
+	index = 0;
+    }
+    if (index < numChars) {
+	p = Tcl_UtfAtIndex(string, index);
+	end = string+length;
+	for (cur = index; p < end; cur++) {
+	    p += TclUtfToUniChar(p, &ch);
+	    if (!Tcl_UniCharIsWordChar(ch)) {
+		break;
 	    }
-	    Tcl_SetObjResult(interp, resultListPtr);
-	    break;
 	}
+	if (cur == index) {
+	    cur++;
+	}
+    } else {
+	cur = numChars;
     }
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(cur));
     return TCL_OK;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- * TclTraceCommandObjCmd --
+ * StringEqualCmd --
  *
- *	Helper function for Tcl_TraceObjCmd; implements the
- *	[trace {add|info|remove} command ...] subcommands.
- *	See the user documentation for details on what these do.
+ *	This procedure is invoked to process the "string equal" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	Standard Tcl result.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Depends on the operation (add, remove, or info) being performed;
- *	may add or remove command traces on a command.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclTraceCommandObjCmd(interp, optionIndex, objc, objv)
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int optionIndex;			/* Add, info or remove */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+static int
+StringEqualCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int commandLength, index;
-    char *name, *command;
-    size_t length;
-    enum traceOptions { TRACE_ADD, TRACE_INFO, TRACE_REMOVE };
-    static CONST char *opStrings[] = { "delete", "rename", (char *) NULL };
-    enum operations { TRACE_CMD_DELETE, TRACE_CMD_RENAME };
-    
-    switch ((enum traceOptions) optionIndex) {
-	case TRACE_ADD: 
-	case TRACE_REMOVE: {
-	    int flags = 0;
-	    int i, listLen, result;
-	    Tcl_Obj **elemPtrs;
-	    if (objc != 6) {
-		Tcl_WrongNumArgs(interp, 3, objv, "name opList command");
-		return TCL_ERROR;
-	    }
-	    /*
-	     * Make sure the ops argument is a list object; get its length and
-	     * a pointer to its array of element pointers.
-	     */
+    /*
+     * Remember to keep code here in some sync with the byte-compiled versions
+     * in tclExecute.c (INST_STR_EQ, INST_STR_NEQ and INST_STR_CMP as well as
+     * the expr string comparison in INST_EQ/INST_NEQ/INST_LT/...).
+     */
 
-	    result = Tcl_ListObjGetElements(interp, objv[4], &listLen,
-		    &elemPtrs);
-	    if (result != TCL_OK) {
-		return result;
+    char *string1, *string2;
+    int length1, length2, i, match, length, nocase = 0, reqlength = -1;
+    typedef int (*strCmpFn_t)(const char *, const char *, unsigned int);
+    strCmpFn_t strCmpFn;
+
+    if (objc < 3 || objc > 6) {
+    str_cmp_args:
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"?-nocase? ?-length int? string1 string2");
+	return TCL_ERROR;
+    }
+
+    for (i = 1; i < objc-2; i++) {
+	string2 = TclGetStringFromObj(objv[i], &length2);
+	if ((length2 > 1) && !strncmp(string2, "-nocase", (size_t)length2)) {
+	    nocase = 1;
+	} else if ((length2 > 1)
+		&& !strncmp(string2, "-length", (size_t)length2)) {
+	    if (i+1 >= objc-2) {
+		goto str_cmp_args;
 	    }
-	    if (listLen == 0) {
-		Tcl_SetResult(interp, "bad operation list \"\": must be "
-			"one or more of delete or rename", TCL_STATIC);
+	    ++i;
+	    if (TclGetIntFromObj(interp, objv[i], &reqlength) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    for (i = 0; i < listLen; i++) {
-		if (Tcl_GetIndexFromObj(interp, elemPtrs[i], opStrings,
-			"operation", TCL_EXACT, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		switch ((enum operations) index) {
-		    case TRACE_CMD_RENAME:
-			flags |= TCL_TRACE_RENAME;
-			break;
-		    case TRACE_CMD_DELETE:
-			flags |= TCL_TRACE_DELETE;
-			break;
-		}
-	    }
-	    command = Tcl_GetStringFromObj(objv[5], &commandLength);
-	    length = (size_t) commandLength;
-	    if ((enum traceOptions) optionIndex == TRACE_ADD) {
-		TraceCommandInfo *tcmdPtr;
-		tcmdPtr = (TraceCommandInfo *) ckalloc((unsigned)
-			(sizeof(TraceCommandInfo) - sizeof(tcmdPtr->command)
-				+ length + 1));
-		tcmdPtr->flags = flags;
-		tcmdPtr->stepTrace = NULL;
-		tcmdPtr->startLevel = 0;
-		tcmdPtr->startCmd = NULL;
-		tcmdPtr->length = length;
-		tcmdPtr->refCount = 1;
-		flags |= TCL_TRACE_DELETE;
-		memcpy(tcmdPtr->command, command, length + 1);
-		name = Tcl_GetString(objv[3]);
-		if (Tcl_TraceCommand(interp, name, flags, TraceCommandProc,
-			(ClientData) tcmdPtr) != TCL_OK) {
-		    ckfree((char *) tcmdPtr);
-		    return TCL_ERROR;
-		}
-	    } else {
-		/*
-		 * Search through all of our traces on this command to
-		 * see if there's one with the given command.  If so, then
-		 * delete the first one that matches.
-		 */
-		
-		TraceCommandInfo *tcmdPtr;
-		ClientData clientData = NULL;
-		name = Tcl_GetString(objv[3]);
-		
-		/* First ensure the name given is valid */
-		if (Tcl_FindCommand(interp, name, NULL, 
-				    TCL_LEAVE_ERR_MSG) == NULL) {
-		    return TCL_ERROR;
-		}
-				    
-		while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
-			TraceCommandProc, clientData)) != NULL) {
-		    tcmdPtr = (TraceCommandInfo *) clientData;
-		    if ((tcmdPtr->length == length)
-			    && (tcmdPtr->flags == flags)
-			    && (strncmp(command, tcmdPtr->command,
-				    (size_t) length) == 0)) {
-			Tcl_UntraceCommand(interp, name,
-				flags | TCL_TRACE_DELETE,
-				TraceCommandProc, clientData);
-			tcmdPtr->flags |= TCL_TRACE_DESTROYED;
-			tcmdPtr->refCount--;
-			if (tcmdPtr->refCount < 0) {
-			    Tcl_Panic("TclTraceCommandObjCmd: negative TraceCommandInfo refCount");
-			}
-			if (tcmdPtr->refCount == 0) {
-			    ckfree((char *) tcmdPtr);
-			}
-			break;
-		    }
-		}
-	    }
-	    break;
+	} else {
+	    Tcl_AppendResult(interp, "bad option \"", string2,
+		    "\": must be -nocase or -length", NULL);
+	    return TCL_ERROR;
 	}
-	case TRACE_INFO: {
-	    ClientData clientData;
-	    Tcl_Obj *resultListPtr, *eachTraceObjPtr, *elemObjPtr;
-	    if (objc != 4) {
-		Tcl_WrongNumArgs(interp, 3, objv, "name");
-		return TCL_ERROR;
-	    }
+    }
 
-	    clientData = NULL;
-	    name = Tcl_GetString(objv[3]);
-	    
-	    /* First ensure the name given is valid */
-	    if (Tcl_FindCommand(interp, name, NULL, 
-				TCL_LEAVE_ERR_MSG) == NULL) {
-		return TCL_ERROR;
-	    }
-				
-	    resultListPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-	    while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
-		    TraceCommandProc, clientData)) != NULL) {
-		int numOps = 0;
+    /*
+     * From now on, we only access the two objects at the end of the argument
+     * array.
+     */
 
-		TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+    objv += objc-2;
 
-		/*
-		 * Build a list with the ops list as
-		 * the first obj element and the tcmdPtr->command string
-		 * as the second obj element.  Append this list (as an
-		 * element) to the end of the result object list.
-		 */
+    if ((reqlength == 0) || (objv[0] == objv[1])) {
+	/*
+	 * Always match at 0 chars of if it is the same obj.
+	 */
 
-		elemObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		Tcl_IncrRefCount(elemObjPtr);
-		if (tcmdPtr->flags & TCL_TRACE_RENAME) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("rename",6));
-		}
-		if (tcmdPtr->flags & TCL_TRACE_DELETE) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("delete",6));
-		}
-		Tcl_ListObjLength(NULL, elemObjPtr, &numOps);
-		if (0 == numOps) {
-		    Tcl_DecrRefCount(elemObjPtr);
-                    continue;
-                }
-		eachTraceObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
-		Tcl_DecrRefCount(elemObjPtr);
-
-		elemObjPtr = Tcl_NewStringObj(tcmdPtr->command, -1);
-		Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
-		Tcl_ListObjAppendElement(interp, resultListPtr,
-			eachTraceObjPtr);
-	    }
-	    Tcl_SetObjResult(interp, resultListPtr);
-	    break;
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(1));
+	return TCL_OK;
+    }
+
+    if (!nocase && objv[0]->typePtr == &tclByteArrayType &&
+	    objv[1]->typePtr == &tclByteArrayType) {
+	/*
+	 * Use binary versions of comparisons since that won't cause undue
+	 * type conversions and it is much faster. Only do this if we're
+	 * case-sensitive (which is all that really makes sense with byte
+	 * arrays anyway, and we have no memcasecmp() for some reason... :^)
+	 */
+
+	string1 = (char *) Tcl_GetByteArrayFromObj(objv[0], &length1);
+	string2 = (char *) Tcl_GetByteArrayFromObj(objv[1], &length2);
+	strCmpFn = (strCmpFn_t) memcmp;
+    } else if ((objv[0]->typePtr == &tclStringType)
+	    && (objv[1]->typePtr == &tclStringType)) {
+	/*
+	 * Do a unicode-specific comparison if both of the args are of String
+	 * type. In benchmark testing this proved the most efficient check
+	 * between the unicode and string comparison operations.
+	 */
+
+	string1 = (char *) Tcl_GetUnicodeFromObj(objv[0], &length1);
+	string2 = (char *) Tcl_GetUnicodeFromObj(objv[1], &length2);
+	strCmpFn = (strCmpFn_t)
+		(nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp);
+    } else {
+	/*
+	 * As a catch-all we will work with UTF-8. We cannot use memcmp() as
+	 * that is unsafe with any string containing NUL (\xC0\x80 in Tcl's
+	 * utf rep). We can use the more efficient TclpUtfNcmp2 if we are
+	 * case-sensitive and no specific length was requested.
+	 */
+
+	string1 = (char *) TclGetStringFromObj(objv[0], &length1);
+	string2 = (char *) TclGetStringFromObj(objv[1], &length2);
+	if ((reqlength < 0) && !nocase) {
+	    strCmpFn = (strCmpFn_t) TclpUtfNcmp2;
+	} else {
+	    length1 = Tcl_NumUtfChars(string1, length1);
+	    length2 = Tcl_NumUtfChars(string2, length2);
+	    strCmpFn = (strCmpFn_t) (nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp);
+	}
+    }
+
+    if ((reqlength < 0) && (length1 != length2)) {
+	match = 1;		/* This will be reversed below. */
+    } else {
+	length = (length1 < length2) ? length1 : length2;
+	if (reqlength > 0 && reqlength < length) {
+	    length = reqlength;
+	} else if (reqlength < 0) {
+	    /*
+	     * The requested length is negative, so we ignore it by setting it
+	     * to length + 1 so we correct the match var.
+	     */
+
+	    reqlength = length + 1;
+	}
+
+	match = strCmpFn(string1, string2, (unsigned) length);
+	if ((match == 0) && (reqlength > length)) {
+	    match = length1 - length2;
 	}
     }
+
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(match ? 0 : 1));
     return TCL_OK;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- * TclTraceVariableObjCmd --
+ * StringCmpCmd --
  *
- *	Helper function for Tcl_TraceObjCmd; implements the
- *	[trace {add|info|remove} variable ...] subcommands.
- *	See the user documentation for details on what these do.
+ *	This procedure is invoked to process the "string compare" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	Standard Tcl result.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Depends on the operation (add, remove, or info) being performed;
- *	may add or remove variable traces on a variable.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclTraceVariableObjCmd(interp, optionIndex, objc, objv)
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int optionIndex;			/* Add, info or remove */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+static int
+StringCmpCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    int commandLength, index;
-    char *name, *command;
-    size_t length;
-    enum traceOptions { TRACE_ADD, TRACE_INFO, TRACE_REMOVE };
-    static CONST char *opStrings[] = { "array", "read", "unset", "write",
-				     (char *) NULL };
-    enum operations { TRACE_VAR_ARRAY, TRACE_VAR_READ, TRACE_VAR_UNSET,
-			  TRACE_VAR_WRITE };
-        
-    switch ((enum traceOptions) optionIndex) {
-	case TRACE_ADD: 
-	case TRACE_REMOVE: {
-	    int flags = 0;
-	    int i, listLen, result;
-	    Tcl_Obj **elemPtrs;
-	    if (objc != 6) {
-		Tcl_WrongNumArgs(interp, 3, objv, "name opList command");
-		return TCL_ERROR;
-	    }
-	    /*
-	     * Make sure the ops argument is a list object; get its length and
-	     * a pointer to its array of element pointers.
-	     */
+    /*
+     * Remember to keep code here in some sync with the byte-compiled versions
+     * in tclExecute.c (INST_STR_EQ, INST_STR_NEQ and INST_STR_CMP as well as
+     * the expr string comparison in INST_EQ/INST_NEQ/INST_LT/...).
+     */
 
-	    result = Tcl_ListObjGetElements(interp, objv[4], &listLen,
-		    &elemPtrs);
-	    if (result != TCL_OK) {
-		return result;
-	    }
-	    if (listLen == 0) {
-		Tcl_SetResult(interp, "bad operation list \"\": must be "
-			"one or more of array, read, unset, or write",
-			TCL_STATIC);
-		return TCL_ERROR;
-	    }
-	    for (i = 0; i < listLen ; i++) {
-		if (Tcl_GetIndexFromObj(interp, elemPtrs[i], opStrings,
-			"operation", TCL_EXACT, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		switch ((enum operations) index) {
-		    case TRACE_VAR_ARRAY:
-			flags |= TCL_TRACE_ARRAY;
-			break;
-		    case TRACE_VAR_READ:
-			flags |= TCL_TRACE_READS;
-			break;
-		    case TRACE_VAR_UNSET:
-			flags |= TCL_TRACE_UNSETS;
-			break;
-		    case TRACE_VAR_WRITE:
-			flags |= TCL_TRACE_WRITES;
-			break;
-		}
-	    }
-	    command = Tcl_GetStringFromObj(objv[5], &commandLength);
-	    length = (size_t) commandLength;
-	    if ((enum traceOptions) optionIndex == TRACE_ADD) {
-		/*
-		 * This code essentially mallocs together the VarTrace and the
-		 * TraceVarInfo, then inlines the Tcl_TraceVar(). This is
-		 * necessary in order to have the TraceVarInfo to be freed 
-		 * automatically when the VarTrace is freed [Bug 1348775]
-		 */
+    char *string1, *string2;
+    int length1, length2, i, match, length, nocase = 0, reqlength = -1;
+    typedef int (*strCmpFn_t)(const char *, const char *, unsigned int);
+    strCmpFn_t strCmpFn;
 
-		CompoundVarTrace *compTracePtr;
-		TraceVarInfo *tvarPtr;
-		Var *varPtr, *arrayPtr;
-		VarTrace *tracePtr;
-		int flagMask;
-
-		compTracePtr = (CompoundVarTrace *) ckalloc((unsigned)
-			(sizeof(CompoundVarTrace) - sizeof(tvarPtr->command)
-				+ length + 1));
-		tracePtr = &(compTracePtr->trace);
-		tvarPtr = &(compTracePtr->tvar);
-		tvarPtr->flags = flags;
-		if (objv[0] == NULL) {
-		    tvarPtr->flags |= TCL_TRACE_OLD_STYLE;
-		}
-		tvarPtr->length = length;
-		flags |= TCL_TRACE_UNSETS | TCL_TRACE_RESULT_OBJECT;
-		memcpy(tvarPtr->command, command, length + 1);
-		name = Tcl_GetString(objv[3]);
-		flagMask = TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY;
-		varPtr = TclLookupVar(interp, name, NULL,
-			(flags & flagMask) | TCL_LEAVE_ERR_MSG, "trace",
-			/*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
-		if (varPtr == NULL) {
-		    ckfree((char *) tracePtr);
-		    return TCL_ERROR;
-		}
-		flagMask = TCL_TRACE_READS | TCL_TRACE_WRITES
-			| TCL_TRACE_UNSETS | TCL_TRACE_ARRAY
-			| TCL_TRACE_RESULT_DYNAMIC | TCL_TRACE_RESULT_OBJECT;
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-		flagMask |= TCL_TRACE_OLD_STYLE;
-#endif
-		tracePtr->traceProc = TraceVarProc;
-		tracePtr->clientData = (ClientData) tvarPtr;
-		tracePtr->flags = flags & flagMask;
-		tracePtr->nextPtr = varPtr->tracePtr;
-		varPtr->tracePtr = tracePtr;
-	    } else {
-		/*
-		 * Search through all of our traces on this variable to
-		 * see if there's one with the given command.  If so, then
-		 * delete the first one that matches.
-		 */
-		
-		TraceVarInfo *tvarPtr;
-		ClientData clientData = 0;
-		name = Tcl_GetString(objv[3]);
-		while ((clientData = Tcl_VarTraceInfo(interp, name, 0,
-			TraceVarProc, clientData)) != 0) {
-		    tvarPtr = (TraceVarInfo *) clientData;
-		    if ((tvarPtr->length == length)
-			    && ((tvarPtr->flags & ~TCL_TRACE_OLD_STYLE)==flags)
-			    && (strncmp(command, tvarPtr->command,
-				    (size_t) length) == 0)) {
-			Tcl_UntraceVar2(interp, name, NULL, 
-			  flags | TCL_TRACE_UNSETS | TCL_TRACE_RESULT_OBJECT,
-				TraceVarProc, clientData);
-			break;
-		    }
-		}
+    if (objc < 3 || objc > 6) {
+    str_cmp_args:
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"?-nocase? ?-length int? string1 string2");
+	return TCL_ERROR;
+    }
+
+    for (i = 1; i < objc-2; i++) {
+	string2 = TclGetStringFromObj(objv[i], &length2);
+	if ((length2 > 1) && !strncmp(string2, "-nocase", (size_t)length2)) {
+	    nocase = 1;
+	} else if ((length2 > 1)
+		&& !strncmp(string2, "-length", (size_t)length2)) {
+	    if (i+1 >= objc-2) {
+		goto str_cmp_args;
 	    }
-	    break;
-	}
-	case TRACE_INFO: {
-	    ClientData clientData;
-	    Tcl_Obj *resultListPtr, *eachTraceObjPtr, *elemObjPtr;
-	    if (objc != 4) {
-		Tcl_WrongNumArgs(interp, 3, objv, "name");
+	    ++i;
+	    if (TclGetIntFromObj(interp, objv[i], &reqlength) != TCL_OK) {
 		return TCL_ERROR;
 	    }
+	} else {
+	    Tcl_AppendResult(interp, "bad option \"", string2,
+		    "\": must be -nocase or -length", NULL);
+	    return TCL_ERROR;
+	}
+    }
 
-	    resultListPtr = Tcl_GetObjResult(interp);
-	    clientData = 0;
-	    name = Tcl_GetString(objv[3]);
-	    while ((clientData = Tcl_VarTraceInfo(interp, name, 0,
-		    TraceVarProc, clientData)) != 0) {
+    /*
+     * From now on, we only access the two objects at the end of the argument
+     * array.
+     */
 
-		TraceVarInfo *tvarPtr = (TraceVarInfo *) clientData;
+    objv += objc-2;
 
-		/*
-		 * Build a list with the ops list as
-		 * the first obj element and the tcmdPtr->command string
-		 * as the second obj element.  Append this list (as an
-		 * element) to the end of the result object list.
-		 */
+    if ((reqlength == 0) || (objv[0] == objv[1])) {
+	/*
+	 * Always match at 0 chars of if it is the same obj.
+	 */
 
-		elemObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		if (tvarPtr->flags & TCL_TRACE_ARRAY) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("array", 5));
-		}
-		if (tvarPtr->flags & TCL_TRACE_READS) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("read", 4));
-		}
-		if (tvarPtr->flags & TCL_TRACE_WRITES) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("write", 5));
-		}
-		if (tvarPtr->flags & TCL_TRACE_UNSETS) {
-		    Tcl_ListObjAppendElement(NULL, elemObjPtr,
-			    Tcl_NewStringObj("unset", 5));
-		}
-		eachTraceObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-		Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
+	return TCL_OK;
+    }
 
-		elemObjPtr = Tcl_NewStringObj(tvarPtr->command, -1);
-		Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
-		Tcl_ListObjAppendElement(interp, resultListPtr,
-			eachTraceObjPtr);
-	    }
-	    Tcl_SetObjResult(interp, resultListPtr);
-	    break;
+    if (!nocase && objv[0]->typePtr == &tclByteArrayType &&
+	    objv[1]->typePtr == &tclByteArrayType) {
+	/*
+	 * Use binary versions of comparisons since that won't cause undue
+	 * type conversions and it is much faster. Only do this if we're
+	 * case-sensitive (which is all that really makes sense with byte
+	 * arrays anyway, and we have no memcasecmp() for some reason... :^)
+	 */
+
+	string1 = (char *) Tcl_GetByteArrayFromObj(objv[0], &length1);
+	string2 = (char *) Tcl_GetByteArrayFromObj(objv[1], &length2);
+	strCmpFn = (strCmpFn_t) memcmp;
+    } else if ((objv[0]->typePtr == &tclStringType)
+	    && (objv[1]->typePtr == &tclStringType)) {
+	/*
+	 * Do a unicode-specific comparison if both of the args are of String
+	 * type. In benchmark testing this proved the most efficient check
+	 * between the unicode and string comparison operations.
+	 */
+
+	string1 = (char *) Tcl_GetUnicodeFromObj(objv[0], &length1);
+	string2 = (char *) Tcl_GetUnicodeFromObj(objv[1], &length2);
+	strCmpFn = (strCmpFn_t)
+		(nocase ? Tcl_UniCharNcasecmp : Tcl_UniCharNcmp);
+    } else {
+	/*
+	 * As a catch-all we will work with UTF-8. We cannot use memcmp() as
+	 * that is unsafe with any string containing NUL (\xC0\x80 in Tcl's
+	 * utf rep). We can use the more efficient TclpUtfNcmp2 if we are
+	 * case-sensitive and no specific length was requested.
+	 */
+
+	string1 = (char *) TclGetStringFromObj(objv[0], &length1);
+	string2 = (char *) TclGetStringFromObj(objv[1], &length2);
+	if ((reqlength < 0) && !nocase) {
+	    strCmpFn = (strCmpFn_t) TclpUtfNcmp2;
+	} else {
+	    length1 = Tcl_NumUtfChars(string1, length1);
+	    length2 = Tcl_NumUtfChars(string2, length2);
+	    strCmpFn = (strCmpFn_t) (nocase ? Tcl_UtfNcasecmp : Tcl_UtfNcmp);
 	}
     }
+
+    length = (length1 < length2) ? length1 : length2;
+    if (reqlength > 0 && reqlength < length) {
+	length = reqlength;
+    } else if (reqlength < 0) {
+	/*
+	 * The requested length is negative, so we ignore it by setting it to
+	 * length + 1 so we correct the match var.
+	 */
+
+	reqlength = length + 1;
+    }
+
+    match = strCmpFn(string1, string2, (unsigned) length);
+    if ((match == 0) && (reqlength > length)) {
+	match = length1 - length2;
+    }
+
+    Tcl_SetObjResult(interp,
+	    Tcl_NewIntObj((match > 0) ? 1 : (match < 0) ? -1 : 0));
     return TCL_OK;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringBytesCmd --
+ *
+ *	This procedure is invoked to process the "string bytelength" Tcl
+ *	command. See the user documentation for details on what it does. Note
+ *	that this command only functions correctly on properly formed Tcl UTF
+ *	strings.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
+static int
+StringBytesCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int length;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string");
+	return TCL_ERROR;
+    }
+
+    (void) TclGetStringFromObj(objv[1], &length);
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(length));
+    return TCL_OK;
+}
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_CommandTraceInfo --
+ * StringLenCmd --
  *
- *	Return the clientData value associated with a trace on a
- *	command.  This procedure can also be used to step through
- *	all of the traces on a particular command that have the
- *	same trace procedure.
+ *	This procedure is invoked to process the "string length" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	The return value is the clientData value associated with
- *	a trace on the given command.  Information will only be
- *	returned for a trace with proc as trace procedure.  If
- *	the clientData argument is NULL then the first such trace is
- *	returned;  otherwise, the next relevant one after the one
- *	given by clientData will be returned.  If the command
- *	doesn't exist then an error message is left in the interpreter
- *	and NULL is returned.  Also, if there are no (more) traces for 
- *	the given command, NULL is returned.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	None.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-ClientData
-Tcl_CommandTraceInfo(interp, cmdName, flags, proc, prevClientData)
-    Tcl_Interp *interp;		/* Interpreter containing command. */
-    CONST char *cmdName;	/* Name of command. */
-    int flags;			/* OR-ed combo or TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY (can be 0). */
-    Tcl_CommandTraceProc *proc;	/* Procedure assocated with trace. */
-    ClientData prevClientData;	/* If non-NULL, gives last value returned
-				 * by this procedure, so this call will
-				 * return the next trace after that one.
-				 * If NULL, this call will return the
-				 * first trace. */
+static int
+StringLenCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Command *cmdPtr;
-    register CommandTrace *tracePtr;
+    int length;
 
-    cmdPtr = (Command*)Tcl_FindCommand(interp, cmdName, 
-		NULL, TCL_LEAVE_ERR_MSG);
-    if (cmdPtr == NULL) {
-	return NULL;
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string");
+	return TCL_ERROR;
     }
 
     /*
-     * Find the relevant trace, if any, and return its clientData.
+     * If we have a ByteArray object, avoid recomputing the string since the
+     * byte array contains one byte per character. Otherwise, use the Unicode
+     * string rep to calculate the length.
      */
 
-    tracePtr = cmdPtr->tracePtr;
-    if (prevClientData != NULL) {
-	for ( ;  tracePtr != NULL;  tracePtr = tracePtr->nextPtr) {
-	    if ((tracePtr->clientData == prevClientData)
-		    && (tracePtr->traceProc == proc)) {
-		tracePtr = tracePtr->nextPtr;
-		break;
-	    }
-	}
-    }
-    for ( ;  tracePtr != NULL;  tracePtr = tracePtr->nextPtr) {
-	if (tracePtr->traceProc == proc) {
-	    return tracePtr->clientData;
-	}
+    if (objv[1]->typePtr == &tclByteArrayType) {
+	(void) Tcl_GetByteArrayFromObj(objv[1], &length);
+    } else {
+	length = Tcl_GetCharLength(objv[1]);
     }
-    return NULL;
+    Tcl_SetObjResult(interp, Tcl_NewIntObj(length));
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_TraceCommand --
+ * StringLowerCmd --
  *
- *	Arrange for rename/deletes to a command to cause a
- *	procedure to be invoked, which can monitor the operations.
- *	
- *	Also optionally arrange for execution of that command
- *	to cause a procedure to be invoked.
+ *	This procedure is invoked to process the "string tolower" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	A standard Tcl return value.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	A trace is set up on the command given by cmdName, such that
- *	future changes to the command will be intermediated by
- *	proc.  See the manual entry for complete details on the calling
- *	sequence for proc.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-int
-Tcl_TraceCommand(interp, cmdName, flags, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter in which command is
-				 * to be traced. */
-    CONST char *cmdName;	/* Name of command. */
-    int flags;			/* OR-ed collection of bits, including any
-				 * of TCL_TRACE_RENAME, TCL_TRACE_DELETE,
-				 * and any of the TRACE_*_EXEC flags */
-    Tcl_CommandTraceProc *proc;	/* Procedure to call when specified ops are
-				 * invoked upon varName. */
-    ClientData clientData;	/* Arbitrary argument to pass to proc. */
+static int
+StringLowerCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Command *cmdPtr;
-    register CommandTrace *tracePtr;
+    int length1, length2;
+    char *string1, *string2;
 
-    cmdPtr = (Command*)Tcl_FindCommand(interp, cmdName,
-	    NULL, TCL_LEAVE_ERR_MSG);
-    if (cmdPtr == NULL) {
+    if (objc < 2 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string ?first? ?last?");
 	return TCL_ERROR;
     }
 
-    /*
-     * Set up trace information.
-     */
+    string1 = TclGetStringFromObj(objv[1], &length1);
 
-    tracePtr = (CommandTrace *) ckalloc(sizeof(CommandTrace));
-    tracePtr->traceProc = proc;
-    tracePtr->clientData = clientData;
-    tracePtr->flags = flags & (TCL_TRACE_RENAME | TCL_TRACE_DELETE
-			       | TCL_TRACE_ANY_EXEC);
-    tracePtr->nextPtr = cmdPtr->tracePtr;
-    tracePtr->refCount = 1;
-    cmdPtr->tracePtr = tracePtr;
-    if ((tracePtr->flags & TCL_TRACE_ANY_EXEC) 
-	    && !(cmdPtr->flags & CMD_HAS_EXEC_TRACES)) {
-        cmdPtr->flags |= CMD_HAS_EXEC_TRACES;
+    if (objc == 2) {
+	Tcl_Obj *resultPtr = Tcl_NewStringObj(string1, length1);
 
-	/*
-	 * Bug 3484621: New execution trace means we no longer compile
-	 * this command if we normally would.  Invalidate bytecode.
-	 */
+	length1 = Tcl_UtfToLower(TclGetString(resultPtr));
+	Tcl_SetObjLength(resultPtr, length1);
+	Tcl_SetObjResult(interp, resultPtr);
+    } else {
+	int first, last;
+	const char *start, *end;
+	Tcl_Obj *resultPtr;
 
-	if (cmdPtr->compileProc != NULL) {
-	    ((Interp *)interp)->compileEpoch++;
+	length1 = Tcl_NumUtfChars(string1, length1) - 1;
+	if (TclGetIntForIndexM(interp,objv[2],length1, &first) != TCL_OK) {
+	    return TCL_ERROR;
 	}
+	if (first < 0) {
+	    first = 0;
+	}
+	last = first;
+
+	if ((objc == 4) && (TclGetIntForIndexM(interp, objv[3], length1,
+		&last) != TCL_OK)) {
+	    return TCL_ERROR;
+	}
+
+	if (last >= length1) {
+	    last = length1;
+	}
+	if (last < first) {
+	    Tcl_SetObjResult(interp, objv[1]);
+	    return TCL_OK;
+	}
+
+	string1 = TclGetStringFromObj(objv[1], &length1);
+	start = Tcl_UtfAtIndex(string1, first);
+	end = Tcl_UtfAtIndex(start, last - first + 1);
+	resultPtr = Tcl_NewStringObj(string1, end - string1);
+	string2 = TclGetString(resultPtr) + (start - string1);
+
+	length2 = Tcl_UtfToLower(string2);
+	Tcl_SetObjLength(resultPtr, length2 + (start - string1));
+
+	Tcl_AppendToObj(resultPtr, end, -1);
+	Tcl_SetObjResult(interp, resultPtr);
     }
+
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_UntraceCommand --
+ * StringUpperCmd --
  *
- *	Remove a previously-created trace for a command.
+ *	This procedure is invoked to process the "string toupper" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	None.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	If there exists a trace for the command given by cmdName
- *	with the given flags, proc, and clientData, then that trace
- *	is removed.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-void
-Tcl_UntraceCommand(interp, cmdName, flags, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter containing command. */
-    CONST char *cmdName;	/* Name of command. */
-    int flags;			/* OR-ed collection of bits, including any
-				 * of TCL_TRACE_RENAME, TCL_TRACE_DELETE,
-				 * and any of the TRACE_*_EXEC flags */
-    Tcl_CommandTraceProc *proc;	/* Procedure assocated with trace. */
-    ClientData clientData;	/* Arbitrary argument to pass to proc. */
+static int
+StringUpperCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register CommandTrace *tracePtr;
-    CommandTrace *prevPtr;
-    Command *cmdPtr;
-    Interp *iPtr = (Interp *) interp;
-    ActiveCommandTrace *activePtr;
-    int hasExecTraces = 0;
-    
-    cmdPtr = (Command*)Tcl_FindCommand(interp, cmdName, 
-		NULL, TCL_LEAVE_ERR_MSG);
-    if (cmdPtr == NULL) {
-	return;
+    int length1, length2;
+    char *string1, *string2;
+
+    if (objc < 2 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string ?first? ?last?");
+	return TCL_ERROR;
     }
 
-    flags &= (TCL_TRACE_RENAME | TCL_TRACE_DELETE | TCL_TRACE_ANY_EXEC);
+    string1 = TclGetStringFromObj(objv[1], &length1);
+
+    if (objc == 2) {
+	Tcl_Obj *resultPtr = Tcl_NewStringObj(string1, length1);
+
+	length1 = Tcl_UtfToUpper(TclGetString(resultPtr));
+	Tcl_SetObjLength(resultPtr, length1);
+	Tcl_SetObjResult(interp, resultPtr);
+    } else {
+	int first, last;
+	const char *start, *end;
+	Tcl_Obj *resultPtr;
 
-    for (tracePtr = cmdPtr->tracePtr, prevPtr = NULL;  ;
-	 prevPtr = tracePtr, tracePtr = tracePtr->nextPtr) {
-	if (tracePtr == NULL) {
-	    return;
+	length1 = Tcl_NumUtfChars(string1, length1) - 1;
+	if (TclGetIntForIndexM(interp,objv[2],length1, &first) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	if ((tracePtr->traceProc == proc) 
-	    && ((tracePtr->flags & (TCL_TRACE_RENAME | TCL_TRACE_DELETE | 
-				    TCL_TRACE_ANY_EXEC)) == flags)
-		&& (tracePtr->clientData == clientData)) {
-	    if (tracePtr->flags & TCL_TRACE_ANY_EXEC) {
-		hasExecTraces = 1;
-	    }
-	    break;
+	if (first < 0) {
+	    first = 0;
 	}
-    }
-    
-    /*
-     * The code below makes it possible to delete traces while traces
-     * are active: it makes sure that the deleted trace won't be
-     * processed by CallCommandTraces.
-     */
+	last = first;
 
-    for (activePtr = iPtr->activeCmdTracePtr;  activePtr != NULL;
-	 activePtr = activePtr->nextPtr) {
-	if (activePtr->nextTracePtr == tracePtr) {
-	    if (activePtr->reverseScan) {
-		activePtr->nextTracePtr = prevPtr;
-	    } else {
-		activePtr->nextTracePtr = tracePtr->nextPtr;
-	    }
+	if ((objc == 4) && (TclGetIntForIndexM(interp, objv[3], length1,
+		&last) != TCL_OK)) {
+	    return TCL_ERROR;
 	}
-    }
-    if (prevPtr == NULL) {
-	cmdPtr->tracePtr = tracePtr->nextPtr;
-    } else {
-	prevPtr->nextPtr = tracePtr->nextPtr;
-    }
-    tracePtr->flags = 0;
-    
-    if ((--tracePtr->refCount) <= 0) {
-	ckfree((char*)tracePtr);
-    }
-    
-    if (hasExecTraces) {
-	for (tracePtr = cmdPtr->tracePtr, prevPtr = NULL; tracePtr != NULL ;
-	     prevPtr = tracePtr, tracePtr = tracePtr->nextPtr) {
-	    if (tracePtr->flags & TCL_TRACE_ANY_EXEC) {
-	        return;
-	    }
+
+	if (last >= length1) {
+	    last = length1;
+	}
+	if (last < first) {
+	    Tcl_SetObjResult(interp, objv[1]);
+	    return TCL_OK;
 	}
-	/* 
-	 * None of the remaining traces on this command are execution
-	 * traces.  We therefore remove this flag:
-	 */
-	cmdPtr->flags &= ~CMD_HAS_EXEC_TRACES;
 
-	/*
-	 * Bug 3484621: No more execution trace means we can compile
-	 * the command again.  If we will, invalidate bytecode.
-	 */
+	string1 = TclGetStringFromObj(objv[1], &length1);
+	start = Tcl_UtfAtIndex(string1, first);
+	end = Tcl_UtfAtIndex(start, last - first + 1);
+	resultPtr = Tcl_NewStringObj(string1, end - string1);
+	string2 = TclGetString(resultPtr) + (start - string1);
 
-	if (cmdPtr->compileProc != NULL) {
-	    ((Interp *)interp)->compileEpoch++;
-	}
+	length2 = Tcl_UtfToUpper(string2);
+	Tcl_SetObjLength(resultPtr, length2 + (start - string1));
+
+	Tcl_AppendToObj(resultPtr, end, -1);
+	Tcl_SetObjResult(interp, resultPtr);
     }
+
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TraceCommandProc --
+ * StringTitleCmd --
  *
- *	This procedure is called to handle command changes that have
- *	been traced using the "trace" command, when using the 
- *	'rename' or 'delete' options.
+ *	This procedure is invoked to process the "string totitle" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *	None.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Depends on the command associated with the trace.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-static void
-TraceCommandProc(clientData, interp, oldName, newName, flags)
-    ClientData clientData;	/* Information about the command trace. */
-    Tcl_Interp *interp;		/* Interpreter containing command. */
-    CONST char *oldName;	/* Name of command being changed. */
-    CONST char *newName;	/* New name of command.  Empty string
-                  		 * or NULL means command is being deleted
-                  		 * (renamed to ""). */
-    int flags;			/* OR-ed bits giving operation and other
-				 * information. */
+static int
+StringTitleCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    int stateCode;
-    Tcl_SavedResult state;
-    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
-    int code;
-    Tcl_DString cmd;
-    
-    tcmdPtr->refCount++;
-    
-    if ((tcmdPtr->flags & flags) && !Tcl_InterpDeleted(interp)) {
-	/*
-	 * Generate a command to execute by appending list elements
-	 * for the old and new command name and the operation.
-	 */
+    int length1, length2;
+    char *string1, *string2;
 
-	Tcl_DStringInit(&cmd);
-	Tcl_DStringAppend(&cmd, tcmdPtr->command, (int) tcmdPtr->length);
-	Tcl_DStringAppendElement(&cmd, oldName);
-	Tcl_DStringAppendElement(&cmd, (newName ? newName : ""));
-	if (flags & TCL_TRACE_RENAME) {
-	    Tcl_DStringAppend(&cmd, " rename", 7);
-	} else if (flags & TCL_TRACE_DELETE) {
-	    Tcl_DStringAppend(&cmd, " delete", 7);
-	}
+    if (objc < 2 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "string ?first? ?last?");
+	return TCL_ERROR;
+    }
 
-	/*
-	 * Execute the command.  Save the interp's result used for the
-	 * command, including the value of iPtr->returnCode which may be
-	 * modified when Tcl_Eval is invoked. We discard any object
-	 * result the command returns.
-	 *
-	 * Add the TCL_TRACE_DESTROYED flag to tcmdPtr to indicate to
-	 * other areas that this will be destroyed by us, otherwise a
-	 * double-free might occur depending on what the eval does.
-	 */
+    string1 = TclGetStringFromObj(objv[1], &length1);
 
-	Tcl_SaveResult(interp, &state);
-	stateCode = iPtr->returnCode;
-	if (flags & TCL_TRACE_DESTROYED) {
-	    tcmdPtr->flags |= TCL_TRACE_DESTROYED;
-	}
+    if (objc == 2) {
+	Tcl_Obj *resultPtr = Tcl_NewStringObj(string1, length1);
 
-	code = Tcl_EvalEx(interp, Tcl_DStringValue(&cmd),
-		Tcl_DStringLength(&cmd), 0);
-	if (code != TCL_OK) {	     
-	    /* We ignore errors in these traced commands */
-	}
+	length1 = Tcl_UtfToTitle(TclGetString(resultPtr));
+	Tcl_SetObjLength(resultPtr, length1);
+	Tcl_SetObjResult(interp, resultPtr);
+    } else {
+	int first, last;
+	const char *start, *end;
+	Tcl_Obj *resultPtr;
 
-	Tcl_RestoreResult(interp, &state);
-	iPtr->returnCode = stateCode;
-	
-	Tcl_DStringFree(&cmd);
-    }
-    /*
-     * We delete when the trace was destroyed or if this is a delete trace,
-     * because command deletes are unconditional, so the trace must go away.
-     */
-    if (flags & (TCL_TRACE_DESTROYED | TCL_TRACE_DELETE)) {
-	int untraceFlags = tcmdPtr->flags;
-
-	if (tcmdPtr->stepTrace != NULL) {
-	    Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
-	    tcmdPtr->stepTrace = NULL;
-            if (tcmdPtr->startCmd != NULL) {
-	        ckfree((char *)tcmdPtr->startCmd);
-	    }
+	length1 = Tcl_NumUtfChars(string1, length1) - 1;
+	if (TclGetIntForIndexM(interp,objv[2],length1, &first) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	if (tcmdPtr->flags & TCL_TRACE_EXEC_IN_PROGRESS) {
-	    /* Postpone deletion, until exec trace returns */
-	    tcmdPtr->flags = 0;
+	if (first < 0) {
+	    first = 0;
 	}
+	last = first;
 
-	/*
-	 * We need to construct the same flags for Tcl_UntraceCommand
-	 * as were passed to Tcl_TraceCommand.  Reproduce the processing
-	 * of [trace add execution/command].  Be careful to keep this
-	 * code in sync with that.
-	 */
+	if ((objc == 4) && (TclGetIntForIndexM(interp, objv[3], length1,
+		&last) != TCL_OK)) {
+	    return TCL_ERROR;
+	}
 
-	if (untraceFlags & TCL_TRACE_ANY_EXEC) {
-	    untraceFlags |= TCL_TRACE_DELETE;
-	    if (untraceFlags & (TCL_TRACE_ENTER_DURING_EXEC 
-		    | TCL_TRACE_LEAVE_DURING_EXEC)) {
-		untraceFlags |= (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC);
-	    }
-	} else if (untraceFlags & TCL_TRACE_RENAME) {
-	    untraceFlags |= TCL_TRACE_DELETE;
+	if (last >= length1) {
+	    last = length1;
+	}
+	if (last < first) {
+	    Tcl_SetObjResult(interp, objv[1]);
+	    return TCL_OK;
 	}
 
-	/* 
-	 * Remove the trace since TCL_TRACE_DESTROYED tells us to, or the
-	 * command we're tracing has just gone away.  Then decrement the
-	 * clientData refCount that was set up by trace creation.
-	 *
-	 * Note that we save the (return) state of the interpreter to prevent
-	 * bizarre error messages.
-	 */
+	string1 = TclGetStringFromObj(objv[1], &length1);
+	start = Tcl_UtfAtIndex(string1, first);
+	end = Tcl_UtfAtIndex(start, last - first + 1);
+	resultPtr = Tcl_NewStringObj(string1, end - string1);
+	string2 = TclGetString(resultPtr) + (start - string1);
 
-	Tcl_SaveResult(interp, &state);
-	stateCode = iPtr->returnCode;
-	Tcl_UntraceCommand(interp, oldName, untraceFlags,
-		TraceCommandProc, clientData);
-	Tcl_RestoreResult(interp, &state);
-	iPtr->returnCode = stateCode;
+	length2 = Tcl_UtfToTitle(string2);
+	Tcl_SetObjLength(resultPtr, length2 + (start - string1));
 
-	tcmdPtr->refCount--;
-    }
-    tcmdPtr->refCount--;
-    if (tcmdPtr->refCount < 0) {
-	Tcl_Panic("TraceCommandProc: negative TraceCommandInfo refCount");
-    }
-    if (tcmdPtr->refCount == 0) {
-        ckfree((char*)tcmdPtr);
+	Tcl_AppendToObj(resultPtr, end, -1);
+	Tcl_SetObjResult(interp, resultPtr);
     }
-    return;
+
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclCheckExecutionTraces --
+ * StringTrimCmd --
  *
- *	Checks on all current command execution traces, and invokes
- *	procedures which have been registered.  This procedure can be
- *	used by other code which performs execution to unify the
- *	tracing system, so that execution traces will function for that
- *	other code.
- *	
- *	For instance extensions like [incr Tcl] which use their
- *	own execution technique can make use of Tcl's tracing.
- *	
- *	This procedure is called by 'TclEvalObjvInternal'
+ *	This procedure is invoked to process the "string trim" Tcl command.
+ *	See the user documentation for details on what it does. Note that this
+ *	command only functions correctly on properly formed Tcl UTF strings.
  *
  * Results:
- *      The return value is a standard Tcl completion code such as
- *      TCL_OK or TCL_ERROR, etc.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Those side effects made by any trace procedures called.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
-int 
-TclCheckExecutionTraces(interp, command, numChars, cmdPtr, code, 
-			traceFlags, objc, objv)
-    Tcl_Interp *interp;		/* The current interpreter. */
-    CONST char *command;        /* Pointer to beginning of the current 
-				 * command string. */
-    int numChars;               /* The number of characters in 'command' 
-				 * which are part of the command string. */
-    Command *cmdPtr;		/* Points to command's Command struct. */
-    int code;                   /* The current result code. */
-    int traceFlags;             /* Current tracing situation. */
-    int objc;			/* Number of arguments for the command. */
-    Tcl_Obj *CONST objv[];	/* Pointers to Tcl_Obj of each argument. */
+
+static int
+StringTrimCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    CommandTrace *tracePtr, *lastTracePtr;
-    ActiveCommandTrace active;
-    int curLevel;
-    int traceCode = TCL_OK;
-    TraceCommandInfo* tcmdPtr;
-    
-    if (command == NULL || cmdPtr->tracePtr == NULL) {
-	return traceCode;
-    }
-    
-    curLevel = ((iPtr->varFramePtr == NULL) ? 0 : iPtr->varFramePtr->level);
-    
-    active.nextPtr = iPtr->activeCmdTracePtr;
-    iPtr->activeCmdTracePtr = &active;
-
-    active.cmdPtr = cmdPtr;
-    lastTracePtr = NULL;
-    for (tracePtr = cmdPtr->tracePtr; 
-	 (traceCode == TCL_OK) && (tracePtr != NULL);
-	 tracePtr = active.nextTracePtr) {
-        if (traceFlags & TCL_TRACE_LEAVE_EXEC) {
-            /* execute the trace command in order of creation for "leave" */
-	    active.reverseScan = 1;
-	    active.nextTracePtr = NULL;
-            tracePtr = cmdPtr->tracePtr;
-            while (tracePtr->nextPtr != lastTracePtr) {
-	        active.nextTracePtr = tracePtr;
-	        tracePtr = tracePtr->nextPtr;
-            }
-        } else {
-	    active.reverseScan = 0;
-	    active.nextTracePtr = tracePtr->nextPtr;
-        }
-	if (tracePtr->traceProc == TraceCommandProc) {
-	    tcmdPtr = (TraceCommandInfo*)tracePtr->clientData;
-	    if (tcmdPtr->flags != 0) {
-        	tcmdPtr->curFlags = traceFlags | TCL_TRACE_EXEC_DIRECT;
-        	tcmdPtr->curCode  = code;
-		tcmdPtr->refCount++;
-		traceCode = TraceExecutionProc((ClientData)tcmdPtr, interp, 
-			curLevel, command, (Tcl_Command)cmdPtr, objc, objv);
-		tcmdPtr->refCount--;
-		if (tcmdPtr->refCount < 0) {
-		    Tcl_Panic("TclCheckExecutionTraces: negative TraceCommandInfo refCount");
-		}
-		if (tcmdPtr->refCount == 0) {
-		    ckfree((char*)tcmdPtr);
-		}
-	    }
-	}
-	if (active.nextTracePtr) {
-	    lastTracePtr = active.nextTracePtr->nextPtr;
-	}
+    const char *string1, *string2;
+    int triml, trimr, length1, length2;
+
+    if (objc == 3) {
+	string2 = TclGetStringFromObj(objv[2], &length2);
+    } else if (objc == 2) {
+	string2 = " \t\n\r";
+	length2 = strlen(string2);
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
+	return TCL_ERROR;
     }
-    iPtr->activeCmdTracePtr = active.nextPtr;
-    return(traceCode);
+    string1 = TclGetStringFromObj(objv[1], &length1);
+
+    triml = TclTrimLeft(string1, length1, string2, length2);
+    trimr = TclTrimRight(string1 + triml, length1 - triml, string2, length2);
+
+    Tcl_SetObjResult(interp,
+	    Tcl_NewStringObj(string1 + triml, length1 - triml - trimr));
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclCheckInterpTraces --
+ * StringTrimLCmd --
  *
- *	Checks on all current traces, and invokes procedures which
- *	have been registered.  This procedure can be used by other
- *	code which performs execution to unify the tracing system.
- *	For instance extensions like [incr Tcl] which use their
- *	own execution technique can make use of Tcl's tracing.
- *	
- *	This procedure is called by 'TclEvalObjvInternal'
+ *	This procedure is invoked to process the "string trimleft" Tcl
+ *	command. See the user documentation for details on what it does. Note
+ *	that this command only functions correctly on properly formed Tcl UTF
+ *	strings.
  *
  * Results:
- *      The return value is a standard Tcl completion code such as
- *      TCL_OK or TCL_ERROR, etc.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Those side effects made by any trace procedures called.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
-int 
-TclCheckInterpTraces(interp, command, numChars, cmdPtr, code, 
-		     traceFlags, objc, objv)
-    Tcl_Interp *interp;		/* The current interpreter. */
-    CONST char *command;        /* Pointer to beginning of the current 
-				 * command string. */
-    int numChars;               /* The number of characters in 'command' 
-				 * which are part of the command string. */
-    Command *cmdPtr;		/* Points to command's Command struct. */
-    int code;                   /* The current result code. */
-    int traceFlags;             /* Current tracing situation. */
-    int objc;			/* Number of arguments for the command. */
-    Tcl_Obj *CONST objv[];	/* Pointers to Tcl_Obj of each argument. */
+
+static int
+StringTrimLCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    Trace *tracePtr, *lastTracePtr;
-    ActiveInterpTrace active;
-    int curLevel;
-    int traceCode = TCL_OK;
-    
-    if (command == NULL || iPtr->tracePtr == NULL ||
-           (iPtr->flags & INTERP_TRACE_IN_PROGRESS)) {
-	return(traceCode);
-    }
-    
-    curLevel = iPtr->numLevels;
-    
-    active.nextPtr = iPtr->activeInterpTracePtr;
-    iPtr->activeInterpTracePtr = &active;
-
-    lastTracePtr = NULL;
-    for ( tracePtr = iPtr->tracePtr;
-          (traceCode == TCL_OK) && (tracePtr != NULL);
-	  tracePtr = active.nextTracePtr) {
-        if (traceFlags & TCL_TRACE_ENTER_EXEC) {
-            /* 
-             * Execute the trace command in reverse order of creation
-             * for "enterstep" operation. The order is changed for
-             * "enterstep" instead of for "leavestep" as was done in 
-             * TclCheckExecutionTraces because for step traces,
-             * Tcl_CreateObjTrace creates one more linked list of traces
-             * which results in one more reversal of trace invocation.
-             */
-	    active.reverseScan = 1;
-	    active.nextTracePtr = NULL;
-            tracePtr = iPtr->tracePtr;
-            while (tracePtr->nextPtr != lastTracePtr) {
-	        active.nextTracePtr = tracePtr;
-	        tracePtr = tracePtr->nextPtr;
-            }
-	    if (active.nextTracePtr) {
-		lastTracePtr = active.nextTracePtr->nextPtr;
-	    }
-        } else {
-	    active.reverseScan = 0;
-	    active.nextTracePtr = tracePtr->nextPtr;
-        }
-	if (tracePtr->level > 0 && curLevel > tracePtr->level) {
-	    continue;
-	}
-	if (!(tracePtr->flags & TCL_TRACE_EXEC_IN_PROGRESS)) {
-            /*
-	     * The proc invoked might delete the traced command which 
-	     * which might try to free tracePtr.  We want to use tracePtr
-	     * until the end of this if section, so we use
-	     * Tcl_Preserve() and Tcl_Release() to be sure it is not
-	     * freed while we still need it.
-	     */
-	    Tcl_Preserve((ClientData) tracePtr);
-	    tracePtr->flags |= TCL_TRACE_EXEC_IN_PROGRESS;
-	    
-	    if (tracePtr->flags & (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC)) {
-	        /* New style trace */
-		if (tracePtr->flags & traceFlags) {
-		    if (tracePtr->proc == TraceExecutionProc) {
-			TraceCommandInfo *tcmdPtr =
-				(TraceCommandInfo *) tracePtr->clientData;
-			tcmdPtr->curFlags = traceFlags;
-			tcmdPtr->curCode  = code;
-		    }
-		    traceCode = (tracePtr->proc)(tracePtr->clientData, 
-			    interp, curLevel, command, (Tcl_Command)cmdPtr,
-			    objc, objv);
-		}
-	    } else {
-		/* Old-style trace */
-		
-		if (traceFlags & TCL_TRACE_ENTER_EXEC) {
-		    /* 
-		     * Old-style interpreter-wide traces only trigger
-		     * before the command is executed.
-		     */
-		    traceCode = CallTraceProcedure(interp, tracePtr, cmdPtr,
-				       command, numChars, objc, objv);
-		}
-	    }
-	    tracePtr->flags &= ~TCL_TRACE_EXEC_IN_PROGRESS;
-	    Tcl_Release((ClientData) tracePtr);
-	}
+    const char *string1, *string2;
+    int trim, length1, length2;
+
+    if (objc == 3) {
+	string2 = TclGetStringFromObj(objv[2], &length2);
+    } else if (objc == 2) {
+	string2 = " \t\n\r";
+	length2 = strlen(string2);
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
+	return TCL_ERROR;
     }
-    iPtr->activeInterpTracePtr = active.nextPtr;
-    return(traceCode);
+    string1 = TclGetStringFromObj(objv[1], &length1);
+
+    trim = TclTrimLeft(string1, length1, string2, length2);
+
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(string1+trim, length1-trim));
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CallTraceProcedure --
+ * StringTrimRCmd --
  *
- *	Invokes a trace procedure registered with an interpreter. These
- *	procedures trace command execution. Currently this trace procedure
- *	is called with the address of the string-based Tcl_CmdProc for the
- *	command, not the Tcl_ObjCmdProc.
+ *	This procedure is invoked to process the "string trimright" Tcl
+ *	command. See the user documentation for details on what it does. Note
+ *	that this command only functions correctly on properly formed Tcl UTF
+ *	strings.
  *
  * Results:
- *	None.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Those side effects made by the trace procedure.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-CallTraceProcedure(interp, tracePtr, cmdPtr, command, numChars, objc, objv)
-    Tcl_Interp *interp;		/* The current interpreter. */
-    register Trace *tracePtr;	/* Describes the trace procedure to call. */
-    Command *cmdPtr;		/* Points to command's Command struct. */
-    CONST char *command;	/* Points to the first character of the
-				 * command's source before substitutions. */
-    int numChars;		/* The number of characters in the
-				 * command's source. */
-    register int objc;		/* Number of arguments for the command. */
-    Tcl_Obj *CONST objv[];	/* Pointers to Tcl_Obj of each argument. */
+StringTrimRCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    char *commandCopy;
-    int traceCode;
+    const char *string1, *string2;
+    int trim, length1, length2;
+
+    if (objc == 3) {
+	string2 = TclGetStringFromObj(objv[2], &length2);
+    } else if (objc == 2) {
+	string2 = " \t\n\r";
+	length2 = strlen(string2);
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
+	return TCL_ERROR;
+    }
+    string1 = TclGetStringFromObj(objv[1], &length1);
 
-   /*
-     * Copy the command characters into a new string.
-     */
+    trim = TclTrimRight(string1, length1, string2, length2);
 
-    commandCopy = (char *) ckalloc((unsigned) (numChars + 1));
-    memcpy((VOID *) commandCopy, (VOID *) command, (size_t) numChars);
-    commandCopy[numChars] = '\0';
-    
-    /*
-     * Call the trace procedure then free allocated storage.
-     */
-    
-    traceCode = (tracePtr->proc)( tracePtr->clientData, (Tcl_Interp*) iPtr,
-                              iPtr->numLevels, commandCopy,
-                              (Tcl_Command) cmdPtr, objc, objv );
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(string1, length1-trim));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitStringCmd --
+ *
+ *	This procedure creates the "string" Tcl command. See the user
+ *	documentation for details on what it does. Note that this command only
+ *	functions correctly on properly formed Tcl UTF strings.
+ *
+ *	Also note that the primary methods here (equal, compare, match, ...)
+ *	have bytecode equivalents. You will find the code for those in
+ *	tclExecute.c. The code here will only be used in the non-bc case (like
+ *	in an 'eval').
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    ckfree((char *) commandCopy);
-    return(traceCode);
+Tcl_Command
+TclInitStringCmd(
+    Tcl_Interp *interp)		/* Current interpreter. */
+{
+    static const EnsembleImplMap stringImplMap[] = {
+	{"bytelength",	StringBytesCmd,	NULL},
+	{"compare",	StringCmpCmd,	TclCompileStringCmpCmd},
+	{"equal",	StringEqualCmd,	TclCompileStringEqualCmd},
+	{"first",	StringFirstCmd,	NULL},
+	{"index",	StringIndexCmd,	TclCompileStringIndexCmd},
+	{"is",		StringIsCmd,	NULL},
+	{"last",	StringLastCmd,	NULL},
+	{"length",	StringLenCmd,	TclCompileStringLenCmd},
+	{"map",		StringMapCmd,	NULL},
+	{"match",	StringMatchCmd,	TclCompileStringMatchCmd},
+	{"range",	StringRangeCmd,	NULL},
+	{"repeat",	StringReptCmd,	NULL},
+	{"replace",	StringRplcCmd,	NULL},
+	{"reverse",	StringRevCmd,	NULL},
+	{"tolower",	StringLowerCmd,	NULL},
+	{"toupper",	StringUpperCmd,	NULL},
+	{"totitle",	StringTitleCmd,	NULL},
+	{"trim",	StringTrimCmd,	NULL},
+	{"trimleft",	StringTrimLCmd,	NULL},
+	{"trimright",	StringTrimRCmd,	NULL},
+	{"wordend",	StringEndCmd,	NULL},
+	{"wordstart",	StringStartCmd,	NULL},
+	{NULL, NULL, NULL}
+    };
+
+    return TclMakeEnsemble(interp, "string", stringImplMap);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CommandObjTraceDeleted --
+ * Tcl_SubstObjCmd --
  *
- *	Ensure the trace is correctly deleted by decrementing its
- *	refCount and only deleting if no other references exist.
+ *	This procedure is invoked to process the "subst" Tcl command. See the
+ *	user documentation for details on what it does. This command relies on
+ *	Tcl_SubstObj() for its implementation.
  *
  * Results:
- *      None.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	May release memory.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
-static void 
-CommandObjTraceDeleted(ClientData clientData) {
-    TraceCommandInfo* tcmdPtr = (TraceCommandInfo*)clientData;
-    tcmdPtr->refCount--;
-    if (tcmdPtr->refCount < 0) {
-	Tcl_Panic("CommandObjTraceDeleted: negative TraceCommandInfo refCount");
+
+int
+Tcl_SubstObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    static const char *substOptions[] = {
+	"-nobackslashes", "-nocommands", "-novariables", NULL
+    };
+    enum substOptions {
+	SUBST_NOBACKSLASHES, SUBST_NOCOMMANDS, SUBST_NOVARS
+    };
+    Tcl_Obj *resultPtr;
+    int flags, i;
+
+    /*
+     * Parse command-line options.
+     */
+
+    flags = TCL_SUBST_ALL;
+    for (i = 1; i < (objc-1); i++) {
+	int optionIndex;
+
+	if (Tcl_GetIndexFromObj(interp, objv[i], substOptions, "switch", 0,
+		&optionIndex) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch (optionIndex) {
+	case SUBST_NOBACKSLASHES:
+	    flags &= ~TCL_SUBST_BACKSLASHES;
+	    break;
+	case SUBST_NOCOMMANDS:
+	    flags &= ~TCL_SUBST_COMMANDS;
+	    break;
+	case SUBST_NOVARS:
+	    flags &= ~TCL_SUBST_VARIABLES;
+	    break;
+	default:
+	    Tcl_Panic("Tcl_SubstObjCmd: bad option index to SubstOptions");
+	}
     }
-    if (tcmdPtr->refCount == 0) {
-        ckfree((char*)tcmdPtr);
+    if (i != objc-1) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"?-nobackslashes? ?-nocommands? ?-novariables? string");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Perform the substitution.
+     */
+
+    resultPtr = Tcl_SubstObj(interp, objv[i], flags);
+
+    if (resultPtr == NULL) {
+	return TCL_ERROR;
     }
+    Tcl_SetObjResult(interp, resultPtr);
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TraceExecutionProc --
+ * Tcl_SwitchObjCmd --
  *
- *	This procedure is invoked whenever code relevant to a
- *	'trace execution' command is executed.  It is called in one
- *	of two ways in Tcl's core:
- *	
- *	(i) by the TclCheckExecutionTraces, when an execution trace 
- *	has been triggered.
- *	(ii) by TclCheckInterpTraces, when a prior execution trace has
- *	created a trace of the internals of a procedure, passing in
- *	this procedure as the one to be called.
+ *	This object-based procedure is invoked to process the "switch" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
- *      The return value is a standard Tcl completion code such as
- *      TCL_OK or TCL_ERROR, etc.
+ *	A standard Tcl object result.
  *
  * Side effects:
- *	May invoke an arbitrary Tcl procedure, and may create or
- *	delete an interpreter-wide trace.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
-static int
-TraceExecutionProc(ClientData clientData, Tcl_Interp *interp, 
-	      int level, CONST char* command, Tcl_Command cmdInfo,
-	      int objc, struct Tcl_Obj *CONST objv[]) {
-    int call = 0;
+
+int
+Tcl_SwitchObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int i,j, index, mode, foundmode, result, splitObjs, numMatchesSaved;
+    int noCase, patternLength;
+    char *pattern;
+    Tcl_Obj *stringObj, *indexVarObj, *matchVarObj;
+    Tcl_Obj *const *savedObjv = objv;
+    Tcl_RegExp regExpr = NULL;
     Interp *iPtr = (Interp *) interp;
-    TraceCommandInfo* tcmdPtr = (TraceCommandInfo*)clientData;
-    int flags = tcmdPtr->curFlags;
-    int code  = tcmdPtr->curCode;
-    int traceCode  = TCL_OK;
-    
-    if (tcmdPtr->flags & TCL_TRACE_EXEC_IN_PROGRESS) {
-	/* 
-	 * Inside any kind of execution trace callback, we do
-	 * not allow any further execution trace callbacks to
-	 * be called for the same trace.
-	 */
-	return traceCode;
+    int pc = 0;
+    int bidx = 0;		/* Index of body argument. */
+    Tcl_Obj *blist = NULL;	/* List obj which is the body */
+    CmdFrame *ctxPtr;		/* Copy of the topmost cmdframe, to allow us
+				 * to mess with the line information */
+
+    /*
+     * If you add options that make -e and -g not unique prefixes of -exact or
+     * -glob, you *must* fix TclCompileSwitchCmd's option parser as well.
+     */
+
+    static const char *options[] = {
+	"-exact", "-glob", "-indexvar", "-matchvar", "-nocase", "-regexp",
+	"--", NULL
+    };
+    enum options {
+	OPT_EXACT, OPT_GLOB, OPT_INDEXV, OPT_MATCHV, OPT_NOCASE, OPT_REGEXP,
+	OPT_LAST
+    };
+    typedef int (*strCmpFn_t)(const char *, const char *);
+    strCmpFn_t strCmpFn = strcmp;
+
+    mode = OPT_EXACT;
+    foundmode = 0;
+    indexVarObj = NULL;
+    matchVarObj = NULL;
+    numMatchesSaved = 0;
+    noCase = 0;
+    for (i = 1; i < objc-2; i++) {
+	if (TclGetString(objv[i])[0] != '-') {
+	    break;
+	}
+	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0,
+		&index) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch ((enum options) index) {
+	    /*
+	     * General options.
+	     */
+
+	case OPT_LAST:
+	    i++;
+	    goto finishedOptions;
+	case OPT_NOCASE:
+	    strCmpFn = strcasecmp;
+	    noCase = 1;
+	    break;
+
+	    /*
+	     * Handle the different switch mode options.
+	     */
+
+	default:
+	    if (foundmode) {
+		/*
+		 * Mode already set via -exact, -glob, or -regexp.
+		 */
+
+		Tcl_AppendResult(interp, "bad option \"",
+			TclGetString(objv[i]), "\": ", options[mode],
+			" option already found", NULL);
+		return TCL_ERROR;
+	    } else {
+		foundmode = 1;
+		mode = index;
+		break;
+	    }
+
+	    /*
+	     * Check for TIP#75 options specifying the variables to write
+	     * regexp information into.
+	     */
+
+	case OPT_INDEXV:
+	    i++;
+	    if (i >= objc-2) {
+		Tcl_AppendResult(interp, "missing variable name argument to ",
+			"-indexvar", " option", NULL);
+		return TCL_ERROR;
+	    }
+	    indexVarObj = objv[i];
+	    numMatchesSaved = -1;
+	    break;
+	case OPT_MATCHV:
+	    i++;
+	    if (i >= objc-2) {
+		Tcl_AppendResult(interp, "missing variable name argument to ",
+			"-matchvar", " option", NULL);
+		return TCL_ERROR;
+	    }
+	    matchVarObj = objv[i];
+	    numMatchesSaved = -1;
+	    break;
+	}
+    }
+
+  finishedOptions:
+    if (objc - i < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"?switches? string pattern body ... ?default body?");
+	return TCL_ERROR;
+    }
+    if (indexVarObj != NULL && mode != OPT_REGEXP) {
+	Tcl_AppendResult(interp,
+		"-indexvar option requires -regexp option", NULL);
+	return TCL_ERROR;
+    }
+    if (matchVarObj != NULL && mode != OPT_REGEXP) {
+	Tcl_AppendResult(interp,
+		"-matchvar option requires -regexp option", NULL);
+	return TCL_ERROR;
     }
-    
-    if (!Tcl_InterpDeleted(interp)) {
+
+    stringObj = objv[i];
+    objc -= i + 1;
+    objv += i + 1;
+    bidx = i + 1;		/* First after the match string. */
+
+    /*
+     * If all of the pattern/command pairs are lumped into a single argument,
+     * split them out again.
+     *
+     * TIP #280: Determine the lines the words in the list start at, based on
+     * the same data for the list word itself. The cmdFramePtr line
+     * information is manipulated directly.
+     */
+
+    splitObjs = 0;
+    if (objc == 1) {
+	Tcl_Obj **listv;
+	blist = objv[0];
+
+	if (TclListObjGetElements(interp, objv[0], &objc, &listv) != TCL_OK){
+	    return TCL_ERROR;
+	}
+
 	/*
-	 * Check whether the current call is going to eval arbitrary
-	 * Tcl code with a generated trace, or whether we are only
-	 * going to setup interpreter-wide traces to implement the
-	 * 'step' traces.  This latter situation can happen if
-	 * we create a command trace without either before or after
-	 * operations, but with either of the step operations.
+	 * Ensure that the list is non-empty.
 	 */
-	if (flags & TCL_TRACE_EXEC_DIRECT) {
-	    call = flags & tcmdPtr->flags 
-		    & (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC);
-	} else {
-	    call = 1;
+
+	if (objc < 1) {
+	    Tcl_WrongNumArgs(interp, 1, savedObjv,
+		    "?switches? string {pattern body ... ?default body?}");
+	    return TCL_ERROR;
 	}
+	objv = listv;
+	splitObjs = 1;
+    }
+
+    /*
+     * Complain if there is an odd number of words in the list of patterns and
+     * bodies.
+     */
+
+    if (objc % 2) {
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "extra switch pattern with no body", NULL);
+
 	/*
-	 * First, if we have returned back to the level at which we
-	 * created an interpreter trace for enterstep and/or leavestep
-         * execution traces, we remove it here.
+	 * Check if this can be due to a badly placed comment in the switch
+	 * block.
+	 *
+	 * The following is an heuristic to detect the infamous "comment in
+	 * switch" error: just check if a pattern begins with '#'.
 	 */
-	if (flags & TCL_TRACE_LEAVE_EXEC) {
-	    if ((tcmdPtr->stepTrace != NULL) && (level == tcmdPtr->startLevel)
-                && (strcmp(command, tcmdPtr->startCmd) == 0)) {
-		Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
-		tcmdPtr->stepTrace = NULL;
-                if (tcmdPtr->startCmd != NULL) {
-	            ckfree((char *)tcmdPtr->startCmd);
-	        }
+
+	if (splitObjs) {
+	    for (i=0 ; i<objc ; i+=2) {
+		if (TclGetString(objv[i])[0] == '#') {
+		    Tcl_AppendResult(interp, ", this may be due to a "
+			    "comment incorrectly placed outside of a "
+			    "switch body - see the \"switch\" "
+			    "documentation", NULL);
+		    break;
+		}
 	    }
 	}
-	
+
+	return TCL_ERROR;
+    }
+
+    /*
+     * Complain if the last body is a continuation. Note that this check
+     * assumes that the list is non-empty!
+     */
+
+    if (strcmp(TclGetString(objv[objc-1]), "-") == 0) {
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "no body specified for pattern \"",
+		TclGetString(objv[objc-2]), "\"", NULL);
+	return TCL_ERROR;
+    }
+
+    for (i = 0; i < objc; i += 2) {
 	/*
-	 * Second, create the tcl callback, if required.
+	 * See if the pattern matches the string.
 	 */
-	if (call) {
-	    Tcl_SavedResult state;
-	    int stateCode, i, saveInterpFlags;
-	    Tcl_DString cmd;
-	    Tcl_DString sub;
-
-	    Tcl_DStringInit(&cmd);
-	    Tcl_DStringAppend(&cmd, tcmdPtr->command, (int)tcmdPtr->length);
-	    /* Append command with arguments */
-	    Tcl_DStringInit(&sub);
-	    for (i = 0; i < objc; i++) {
-	        char* str;
-	        int len;
-	        str = Tcl_GetStringFromObj(objv[i],&len);
-	        Tcl_DStringAppendElement(&sub, str);
-	    }
-	    Tcl_DStringAppendElement(&cmd, Tcl_DStringValue(&sub));
-	    Tcl_DStringFree(&sub);
 
-	    if (flags & TCL_TRACE_ENTER_EXEC) {
-		/* Append trace operation */
-		if (flags & TCL_TRACE_EXEC_DIRECT) {
-		    Tcl_DStringAppendElement(&cmd, "enter");
+	pattern = TclGetStringFromObj(objv[i], &patternLength);
+
+	if ((i == objc - 2) && (*pattern == 'd')
+		&& (strcmp(pattern, "default") == 0)) {
+	    Tcl_Obj *emptyObj = NULL;
+
+	    /*
+	     * If either indexVarObj or matchVarObj are non-NULL, we're in
+	     * REGEXP mode but have reached the default clause anyway. TIP#75
+	     * specifies that we set the variables to empty lists (== empty
+	     * objects) in that case.
+	     */
+
+	    if (indexVarObj != NULL) {
+		TclNewObj(emptyObj);
+		if (Tcl_ObjSetVar2(interp, indexVarObj, NULL, emptyObj,
+			TCL_LEAVE_ERR_MSG) == NULL) {
+		    return TCL_ERROR;
+		}
+	    }
+	    if (matchVarObj != NULL) {
+		if (emptyObj == NULL) {
+		    TclNewObj(emptyObj);
+		}
+		if (Tcl_ObjSetVar2(interp, matchVarObj, NULL, emptyObj,
+			TCL_LEAVE_ERR_MSG) == NULL) {
+		    return TCL_ERROR;
+		}
+	    }
+	    goto matchFound;
+	} else {
+	    switch (mode) {
+	    case OPT_EXACT:
+		if (strCmpFn(TclGetString(stringObj), pattern) == 0) {
+		    goto matchFound;
+		}
+		break;
+	    case OPT_GLOB:
+		if (Tcl_StringCaseMatch(TclGetString(stringObj), pattern,
+			noCase)) {
+		    goto matchFound;
+		}
+		break;
+	    case OPT_REGEXP:
+		regExpr = Tcl_GetRegExpFromObj(interp, objv[i],
+			TCL_REG_ADVANCED | (noCase ? TCL_REG_NOCASE : 0));
+		if (regExpr == NULL) {
+		    return TCL_ERROR;
 		} else {
-		    Tcl_DStringAppendElement(&cmd, "enterstep");
+		    int matched = Tcl_RegExpExecObj(interp, regExpr,
+			    stringObj, 0, numMatchesSaved, 0);
+
+		    if (matched < 0) {
+			return TCL_ERROR;
+		    } else if (matched) {
+			goto matchFoundRegexp;
+		    }
 		}
-	    } else if (flags & TCL_TRACE_LEAVE_EXEC) {
-		Tcl_Obj* resultCode;
-		char* resultCodeStr;
-
-		/* Append result code */
-		resultCode = Tcl_NewIntObj(code);
-		resultCodeStr = Tcl_GetString(resultCode);
-		Tcl_DStringAppendElement(&cmd, resultCodeStr);
-		Tcl_DecrRefCount(resultCode);
-		
-		/* Append result string */
-		Tcl_DStringAppendElement(&cmd, Tcl_GetStringResult(interp));
-		/* Append trace operation */
-		if (flags & TCL_TRACE_EXEC_DIRECT) {
-		    Tcl_DStringAppendElement(&cmd, "leave");
+		break;
+	    }
+	}
+    }
+    return TCL_OK;
+
+  matchFoundRegexp:
+    /*
+     * We are operating in REGEXP mode and we need to store information about
+     * what we matched in some user-nominated arrays. So build the lists of
+     * values and indices to write here. [TIP#75]
+     */
+
+    if (numMatchesSaved) {
+	Tcl_RegExpInfo info;
+	Tcl_Obj *matchesObj, *indicesObj = NULL;
+
+	Tcl_RegExpGetInfo(regExpr, &info);
+	if (matchVarObj != NULL) {
+	    TclNewObj(matchesObj);
+	} else {
+	    matchesObj = NULL;
+	}
+	if (indexVarObj != NULL) {
+	    TclNewObj(indicesObj);
+	}
+
+	for (j=0 ; j<=info.nsubs ; j++) {
+	    if (indexVarObj != NULL) {
+		Tcl_Obj *rangeObjAry[2];
+
+		if (info.matches[j].end > 0) {
+		    rangeObjAry[0] = Tcl_NewLongObj(info.matches[j].start);
+		    rangeObjAry[1] = Tcl_NewLongObj(info.matches[j].end-1);
 		} else {
-		    Tcl_DStringAppendElement(&cmd, "leavestep");
+		    rangeObjAry[0] = rangeObjAry[1] = Tcl_NewIntObj(-1);
 		}
-	    } else {
-		panic("TraceExecutionProc: bad flag combination");
+
+		/*
+		 * Never fails; the object is always clean at this point.
+		 */
+
+		Tcl_ListObjAppendElement(NULL, indicesObj,
+			Tcl_NewListObj(2, rangeObjAry));
 	    }
-	    
-	    /*
-	     * Execute the command.  Save the interp's result used for
-	     * the command, including the value of iPtr->returnCode which
-	     * may be modified when Tcl_Eval is invoked.  We discard any
-	     * object result the command returns.
-	     */
 
-	    Tcl_SaveResult(interp, &state);
-	    stateCode = iPtr->returnCode;
-
-	    saveInterpFlags = iPtr->flags;
-	    iPtr->flags    |= INTERP_TRACE_IN_PROGRESS;
-	    tcmdPtr->flags |= TCL_TRACE_EXEC_IN_PROGRESS;
-	    tcmdPtr->refCount++;
-	    /* 
-	     * This line can have quite arbitrary side-effects,
-	     * including deleting the trace, the command being
-	     * traced, or even the interpreter.
-	     */
-	    traceCode = Tcl_Eval(interp, Tcl_DStringValue(&cmd));
-	    tcmdPtr->flags &= ~TCL_TRACE_EXEC_IN_PROGRESS;
+	    if (matchVarObj != NULL) {
+		Tcl_Obj *substringObj;
 
-	    /*
-	     * Restore the interp tracing flag to prevent cmd traces
-	     * from affecting interp traces
-	     */
-	    iPtr->flags = saveInterpFlags;;
-	    if (tcmdPtr->flags == 0) {
-		flags |= TCL_TRACE_DESTROYED;
+		substringObj = Tcl_GetRange(stringObj,
+			info.matches[j].start, info.matches[j].end-1);
+
+		/*
+		 * Never fails; the object is always clean at this point.
+		 */
+
+		Tcl_ListObjAppendElement(NULL, matchesObj, substringObj);
 	    }
-	    
-            if (traceCode == TCL_OK) {
-		/* Restore result if trace execution was successful */
-		Tcl_RestoreResult(interp, &state);
-		iPtr->returnCode = stateCode;
-            } else {
-		Tcl_DiscardResult(&state);
+	}
+
+	if (indexVarObj != NULL) {
+	    if (Tcl_ObjSetVar2(interp, indexVarObj, NULL, indicesObj,
+		    TCL_LEAVE_ERR_MSG) == NULL) {
+		/*
+		 * Careful! Check to see if we have allocated the list of
+		 * matched strings; if so (but there was an error assigning
+		 * the indices list) we have a potential memory leak because
+		 * the match list has not been written to a variable. Except
+		 * that we'll clean that up right now.
+		 */
+
+		if (matchesObj != NULL) {
+		    Tcl_DecrRefCount(matchesObj);
+		}
+		return TCL_ERROR;
 	    }
+	}
+	if (matchVarObj != NULL) {
+	    if (Tcl_ObjSetVar2(interp, matchVarObj, NULL, matchesObj,
+		    TCL_LEAVE_ERR_MSG) == NULL) {
+		/*
+		 * Unlike above, if indicesObj is non-NULL at this point, it
+		 * will have been written to a variable already and will hence
+		 * not be leaked.
+		 */
 
-	    Tcl_DStringFree(&cmd);
+		return TCL_ERROR;
+	    }
 	}
-	
+    }
+
+    /*
+     * We've got a match. Find a body to execute, skipping bodies that are
+     * "-".
+     */
+
+  matchFound:
+    ctxPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame));
+    *ctxPtr = *iPtr->cmdFramePtr;
+
+    if (splitObjs) {
 	/*
-	 * Third, if there are any step execution traces for this proc,
-         * we register an interpreter trace to invoke enterstep and/or
-	 * leavestep traces.
-	 * We also need to save the current stack level and the proc
-         * string in startLevel and startCmd so that we can delete this
-         * interpreter trace when it reaches the end of this proc.
+	 * We have to perform the GetSrc and other type dependent handling of
+	 * the frame here because we are munging with the line numbers,
+	 * something the other commands like if, etc. are not doing. Them are
+	 * fine with simply passing the CmdFrame through and having the
+	 * special handling done in 'info frame', or the bc compiler
 	 */
-	if ((flags & TCL_TRACE_ENTER_EXEC) && (tcmdPtr->stepTrace == NULL)
-	    && (tcmdPtr->flags & (TCL_TRACE_ENTER_DURING_EXEC | 
-				  TCL_TRACE_LEAVE_DURING_EXEC))) {
-		tcmdPtr->startLevel = level;
-		tcmdPtr->startCmd = 
-		    (char *) ckalloc((unsigned) (strlen(command) + 1));
-		strcpy(tcmdPtr->startCmd, command);
-		tcmdPtr->refCount++;
-		tcmdPtr->stepTrace = Tcl_CreateObjTrace(interp, 0,
-		   (tcmdPtr->flags & TCL_TRACE_ANY_EXEC) >> 2, 
-		   TraceExecutionProc, (ClientData)tcmdPtr, 
-		   CommandObjTraceDeleted);
+
+	if (ctxPtr->type == TCL_LOCATION_BC) {
+	    /*
+	     * Type BC => ctxPtr->data.eval.path    is not used.
+	     *            ctxPtr->data.tebc.codePtr is used instead.
+	     */
+
+	    TclGetSrcInfoForPc(ctxPtr);
+	    pc = 1;
+
+	    /*
+	     * The line information in the cmdFrame is now a copy we do not
+	     * own.
+	     */
 	}
-    }
-    if (flags & TCL_TRACE_DESTROYED) {
-	if (tcmdPtr->stepTrace != NULL) {
-	    Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
-	    tcmdPtr->stepTrace = NULL;
-            if (tcmdPtr->startCmd != NULL) {
-	        ckfree((char *)tcmdPtr->startCmd);
+
+	if (ctxPtr->type == TCL_LOCATION_SOURCE && ctxPtr->line[bidx] >= 0) {
+	    int bline = ctxPtr->line[bidx];
+
+	    ctxPtr->line = (int *) ckalloc(objc * sizeof(int));
+	    ctxPtr->nline = objc;
+	    TclListLines(blist, bline, objc, ctxPtr->line, objv);
+	} else {
+	    /*
+	     * This is either a dynamic code word, when all elements are
+	     * relative to themselves, or something else less expected and
+	     * where we have no information. The result is the same in both
+	     * cases; tell the code to come that it doesn't know where it is,
+	     * which triggers reversion to the old behavior.
+	     */
+
+	    int k;
+
+	    ctxPtr->line = (int *) ckalloc(objc * sizeof(int));
+	    ctxPtr->nline = objc;
+	    for (k=0; k < objc; k++) {
+		ctxPtr->line[k] = -1;
 	    }
 	}
     }
-    if (call) {
-	tcmdPtr->refCount--;
-	if (tcmdPtr->refCount < 0) {
-	    Tcl_Panic("TraceExecutionProc: negative TraceCommandInfo refCount");
+
+    for (j = i + 1; ; j += 2) {
+	if (j >= objc) {
+	    /*
+	     * This shouldn't happen since we've checked that the last body is
+	     * not a continuation...
+	     */
+
+	    Tcl_Panic("fall-out when searching for body to match pattern");
 	}
-	if (tcmdPtr->refCount == 0) {
-	    ckfree((char*)tcmdPtr);
+	if (strcmp(TclGetString(objv[j]), "-") != 0) {
+	    break;
 	}
     }
-    return traceCode;
+
+    /*
+     * TIP #280: Make invoking context available to switch branch.
+     */
+
+    result = TclEvalObjEx(interp, objv[j], 0, ctxPtr, splitObjs ? j : bidx+j);
+    if (splitObjs) {
+	ckfree((char *) ctxPtr->line);
+	if (pc && (ctxPtr->type == TCL_LOCATION_SOURCE)) {
+	    /*
+	     * Death of SrcInfo reference.
+	     */
+
+	    Tcl_DecrRefCount(ctxPtr->data.eval.path);
+	}
+    }
+
+    /*
+     * Generate an error message if necessary.
+     */
+
+    if (result == TCL_ERROR) {
+	int limit = 50;
+	int overflow = (patternLength > limit);
+
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (\"%.*s%s\" arm line %d)",
+		(overflow ? limit : patternLength), pattern,
+		(overflow ? "..." : ""), interp->errorLine));
+    }
+    TclStackFree(interp, ctxPtr);
+    return result;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TraceVarProc --
+ * Tcl_TimeObjCmd --
  *
- *	This procedure is called to handle variable accesses that have
- *	been traced using the "trace" command.
+ *	This object-based procedure is invoked to process the "time" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
- *	Normally returns NULL.  If the trace command returns an error,
- *	then this procedure returns an error string.
+ *	A standard Tcl object result.
  *
  * Side effects:
- *	Depends on the command associated with the trace.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-	/* ARGSUSED */
-static char *
-TraceVarProc(clientData, interp, name1, name2, flags)
-    ClientData clientData;	/* Information about the variable trace. */
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *name1;		/* Name of variable or array. */
-    CONST char *name2;		/* Name of element within array;  NULL means
-				 * scalar variable is being referenced. */
-    int flags;			/* OR-ed bits giving operation and other
-				 * information. */
+int
+Tcl_TimeObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_SavedResult state;
-    TraceVarInfo *tvarPtr = (TraceVarInfo *) clientData;
-    char *result;
-    int code, destroy = 0;
-    Tcl_DString cmd;
-
-    /* 
-     * We might call Tcl_Eval() below, and that might evaluate [trace
-     * vdelete] which might try to free tvarPtr. However we do not
-     * need to protect anything here; it's done by our caller because
-     * the TraceVarInfo is really part of a CompoundVarTrace. [Bug 1348775]
-     */
+    register Tcl_Obj *objPtr;
+    Tcl_Obj *objs[4];
+    register int i, result;
+    int count;
+    double totalMicroSec;
+#ifndef TCL_WIDE_CLICKS
+    Tcl_Time start, stop;
+#else
+    Tcl_WideInt start, stop;
+#endif
 
-    result = NULL;
-    if ((tvarPtr->flags & flags) && !Tcl_InterpDeleted(interp)) {
-	if (tvarPtr->length != (size_t) 0) {
-	    /*
-	     * Generate a command to execute by appending list elements
-	     * for the two variable names and the operation. 
-	     */
+    if (objc == 2) {
+	count = 1;
+    } else if (objc == 3) {
+	result = TclGetIntFromObj(interp, objv[2], &count);
+	if (result != TCL_OK) {
+	    return result;
+	}
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "command ?count?");
+	return TCL_ERROR;
+    }
 
-	    Tcl_DStringInit(&cmd);
-	    Tcl_DStringAppend(&cmd, tvarPtr->command, (int) tvarPtr->length);
-	    Tcl_DStringAppendElement(&cmd, name1);
-	    Tcl_DStringAppendElement(&cmd, (name2 ? name2 : ""));
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-	    if (tvarPtr->flags & TCL_TRACE_OLD_STYLE) {
-		if (flags & TCL_TRACE_ARRAY) {
-		    Tcl_DStringAppend(&cmd, " a", 2);
-		} else if (flags & TCL_TRACE_READS) {
-		    Tcl_DStringAppend(&cmd, " r", 2);
-		} else if (flags & TCL_TRACE_WRITES) {
-		    Tcl_DStringAppend(&cmd, " w", 2);
-		} else if (flags & TCL_TRACE_UNSETS) {
-		    Tcl_DStringAppend(&cmd, " u", 2);
-		}
-	    } else {
+    objPtr = objv[1];
+    i = count;
+#ifndef TCL_WIDE_CLICKS
+    Tcl_GetTime(&start);
+#else
+    start = TclpGetWideClicks();
 #endif
-		if (flags & TCL_TRACE_ARRAY) {
-		    Tcl_DStringAppend(&cmd, " array", 6);
-		} else if (flags & TCL_TRACE_READS) {
-		    Tcl_DStringAppend(&cmd, " read", 5);
-		} else if (flags & TCL_TRACE_WRITES) {
-		    Tcl_DStringAppend(&cmd, " write", 6);
-		} else if (flags & TCL_TRACE_UNSETS) {
-		    Tcl_DStringAppend(&cmd, " unset", 6);
-		}
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-	    }
+    while (i-- > 0) {
+	result = Tcl_EvalObjEx(interp, objPtr, 0);
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+#ifndef TCL_WIDE_CLICKS
+    Tcl_GetTime(&stop);
+    totalMicroSec = ((double) (stop.sec - start.sec)) * 1.0e6
+	    + (stop.usec - start.usec);
+#else
+    stop = TclpGetWideClicks();
+    totalMicroSec = ((double) TclpWideClicksToNanoseconds(stop - start))/1.0e3;
 #endif
-	    
-	    /*
-	     * Execute the command.  Save the interp's result used for
-	     * the command. We discard any object result the command returns.
-	     *
-	     * Add the TCL_TRACE_DESTROYED flag to tvarPtr to indicate to
-	     * other areas that this will be destroyed by us, otherwise a
-	     * double-free might occur depending on what the eval does.
-	     */
 
-	    Tcl_SaveResult(interp, &state);
-	    if ((flags & TCL_TRACE_DESTROYED)
-		    && !(tvarPtr->flags & TCL_TRACE_DESTROYED)) {
-		destroy = 1;
-		tvarPtr->flags |= TCL_TRACE_DESTROYED;
-	    }
+    if (count <= 1) {
+	/*
+	 * Use int obj since we know time is not fractional. [Bug 1202178]
+	 */
 
-	    code = Tcl_EvalEx(interp, Tcl_DStringValue(&cmd),
-		    Tcl_DStringLength(&cmd), 0);
-	    if (code != TCL_OK) {	     /* copy error msg to result */
-		register Tcl_Obj *errMsgObj = Tcl_GetObjResult(interp);
-		Tcl_IncrRefCount(errMsgObj);
-		result = (char *) errMsgObj;
-	    }
+	objs[0] = Tcl_NewIntObj((count <= 0) ? 0 : (int) totalMicroSec);
+    } else {
+	objs[0] = Tcl_NewDoubleObj(totalMicroSec/count);
+    }
 
-	    Tcl_RestoreResult(interp, &state);
+    /*
+     * Construct the result as a list because many programs have always parsed
+     * as such (extracting the first element, typically).
+     */
 
-	    Tcl_DStringFree(&cmd);
-	}
-    }
-    if (destroy) {
-	if (result != NULL) {
-	    register Tcl_Obj *errMsgObj = (Tcl_Obj *) result;
+    TclNewLiteralStringObj(objs[1], "microseconds");
+    TclNewLiteralStringObj(objs[2], "per");
+    TclNewLiteralStringObj(objs[3], "iteration");
+    Tcl_SetObjResult(interp, Tcl_NewListObj(4, objs));
 
-	    Tcl_DecrRefCount(errMsgObj);
-	    result = NULL;
-	}
-    }
-    return result;
+    return TCL_OK;
 }
 
 /*
@@ -4936,108 +3941,115 @@ TraceVarProc(clientData, interp, name1, name2, flags)
  *
  * Tcl_WhileObjCmd --
  *
- *      This procedure is invoked to process the "while" Tcl command.
- *      See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "while" Tcl command. See the
+ *	user documentation for details on what it does.
  *
- *	With the bytecode compiler, this procedure is only called when
- *	a command name is computed at runtime, and is "while" or the name
- *	to which "while" was renamed: e.g., "set z while; $z {$i<100} {}"
+ *	With the bytecode compiler, this procedure is only called when a
+ *	command name is computed at runtime, and is "while" or the name to
+ *	which "while" was renamed: e.g., "set z while; $z {$i<100} {}"
  *
  * Results:
- *      A standard Tcl result.
+ *	A standard Tcl result.
  *
  * Side effects:
- *      See the user documentation.
+ *	See the user documentation.
  *
  *----------------------------------------------------------------------
  */
 
-        /* ARGSUSED */
 int
-Tcl_WhileObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;                   /* Not used. */
-    Tcl_Interp *interp;                 /* Current interpreter. */
-    int objc;                           /* Number of arguments. */
-    Tcl_Obj *CONST objv[];       	/* Argument objects. */
+Tcl_WhileObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int result, value;
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    Interp *iPtr = (Interp *) interp;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 1, objv, "test command");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     while (1) {
-        result = Tcl_ExprBooleanObj(interp, objv[1], &value);
-        if (result != TCL_OK) {
-            return result;
-        }
-        if (!value) {
-            break;
-        }
-#ifndef TCL_TIP280
-        result = Tcl_EvalObjEx(interp, objv[2], 0);
-#else
-	/* TIP #280. */
-        result = TclEvalObjEx(interp, objv[2], 0, iPtr->cmdFramePtr,2);
-#endif
-        if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
-            if (result == TCL_ERROR) {
-                char msg[32 + TCL_INTEGER_SPACE];
+	result = Tcl_ExprBooleanObj(interp, objv[1], &value);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	if (!value) {
+	    break;
+	}
 
-                sprintf(msg, "\n    (\"while\" body line %d)",
-                        interp->errorLine);
-                Tcl_AddErrorInfo(interp, msg);
-            }
-            break;
-        }
+	/* TIP #280. */
+        result = TclEvalObjEx(interp, objv[2], 0, iPtr->cmdFramePtr, 2);
+	if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
+	    if (result == TCL_ERROR) {
+		Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			"\n    (\"while\" body line %d)", interp->errorLine));
+	    }
+	    break;
+	}
     }
     if (result == TCL_BREAK) {
-        result = TCL_OK;
+	result = TCL_OK;
     }
     if (result == TCL_OK) {
-        Tcl_ResetResult(interp);
+	Tcl_ResetResult(interp);
     }
     return result;
 }
 
-#ifdef TCL_TIP280
-static void
-ListLines(listObj, line, n, lines, elems)
-     Tcl_Obj* listObj; /* Pointer to obj holding a string with list structure.
-			* Assumed to be valid. Assumed to contain n elements.
-			*/
-     int  line;        /* line the list as a whole starts on */
-     int  n;           /* #elements in lines */
-     int* lines;       /* Array of line numbers, to fill */
-     Tcl_Obj* const* elems;  /* The list elems as Tcl_Obj*, in need of derived
-			      * continuation data */
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclListLines --
+ *
+ *	???
+ *
+ * Results:
+ *	Filled in array of line numbers?
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclListLines(
+    Tcl_Obj* listObj,          /* Pointer to obj holding a string with list
+				* structure.  Assumed to be valid. Assumed to
+				* contain n elements.
+				*/
+    int line,			/* Line the list as a whole starts on. */
+    int n,			/* #elements in lines */
+    int *lines,			/* Array of line numbers, to fill. */
+    Tcl_Obj* const* elems)      /* The list elems as Tcl_Obj*, in need of
+				 * derived continuation data */
 {
-    int          i;
-    CONST char*  listStr  = Tcl_GetString (listObj);
-    CONST char*  listHead = listStr;
-    int          length   = strlen( listStr);
-    CONST char*  element  = NULL;
-    CONST char*  next     = NULL;
+    const char*  listStr  = Tcl_GetString (listObj);
+    const char*  listHead = listStr;
+    int i, length = strlen(listStr);
+    const char *element = NULL, *next = NULL;
     ContLineLoc* clLocPtr = TclContinuationsGet(listObj);
-    int*         clNext   = (clLocPtr ? &clLocPtr->loc[0] : NULL);
+    int* clNext   = (clLocPtr ? &clLocPtr->loc[0] : NULL);
 
     for (i = 0; i < n; i++) {
 	TclFindElement(NULL, listStr, length, &element, &next, NULL, NULL);
 
-	TclAdvanceLines (&line, listStr, element); /* Leading whitespace */
+	TclAdvanceLines(&line, listStr, element);
+				/* Leading whitespace */
 	TclAdvanceContinuations (&line, &clNext, element - listHead);
-	if (clNext) {
-	    TclContinuationsEnterDerived (elems[i], element - listHead, clNext);
+	if (elems && clNext) {
+	    TclContinuationsEnterDerived (elems[i], element - listHead,
+					  clNext);
 	}
-
-	lines [i] = line;
-	length   -= (next - listStr);
-	TclAdvanceLines (&line, element, next); /* Element */
-	listStr   = next;
+	lines[i] = line;
+	length -= (next - listStr);
+	TclAdvanceLines(&line, element, next);
+				/* Element */
+	listStr = next;
 
 	if (*element == 0) {
 	    /* ASSERT i == n */
@@ -5045,7 +4057,6 @@ ListLines(listObj, line, n, lines, elems)
 	}
     }
 }
-#endif
 
 /*
  * Local Variables:
@@ -5054,4 +4065,3 @@ ListLines(listObj, line, n, lines, elems)
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index a39370e..b6e9527 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -1,54 +1,49 @@
-/* 
+/*
  * tclCompCmds.c --
  *
- *	This file contains compilation procedures that compile various
- *	Tcl commands into a sequence of instructions ("bytecodes"). 
+ *	This file contains compilation procedures that compile various Tcl
+ *	commands into a sequence of instructions ("bytecodes").
  *
  * Copyright (c) 1997-1998 Sun Microsystems, Inc.
  * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
  * Copyright (c) 2002 ActiveState Corporation.
+ * Copyright (c) 2004-2006 by Donal K. Fellows.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 #include "tclCompile.h"
 
 /*
- * Prototypes for procedures defined later in this file:
+ * Macro that encapsulates an efficiency trick that avoids a function call for
+ * the simplest of compiles. The ANSI C "prototype" for this macro is:
+ *
+ * static void		CompileWord(CompileEnv *envPtr, Tcl_Token *tokenPtr,
+ *			    Tcl_Interp *interp, int word);
  */
 
-static ClientData	DupForeachInfo _ANSI_ARGS_((ClientData clientData));
-static void		FreeForeachInfo _ANSI_ARGS_((ClientData clientData));
-#ifndef TCL_TIP280
-static int		TclPushVarName _ANSI_ARGS_((Tcl_Interp *interp,
-	Tcl_Token *varTokenPtr, CompileEnv *envPtr, int flags,
-	int *localIndexPtr, int *simpleVarNamePtr, int *isScalarPtr));
-
-#define TclPushVarNameWord(i,v,e,f,l,s,sc,word) \
-    TclPushVarName (i,v,e,f,l,s,sc) /* ignoring word */
-
-#define DefineLineInformation /**/
-#define SetLineInformation(word) /**/
-#else
-static int		TclPushVarName _ANSI_ARGS_((Tcl_Interp *interp,
-	Tcl_Token *varTokenPtr, CompileEnv *envPtr, int flags,
-	int *localIndexPtr, int *simpleVarNamePtr, int *isScalarPtr,
-	int line, int* clNext));
-
-#define TclPushVarNameWord(i,v,e,f,l,s,sc,word) \
-    TclPushVarName (i,v,e,f,l,s,sc,                       \
-                    mapPtr->loc [eclIndex].line [(word)], \
-	            mapPtr->loc [eclIndex].next [(word)])
+#define CompileWord(envPtr, tokenPtr, interp, word) \
+    if ((tokenPtr)->type == TCL_TOKEN_SIMPLE_WORD) { \
+	TclEmitPush(TclRegisterNewLiteral((envPtr), (tokenPtr)[1].start, \
+		(tokenPtr)[1].size), (envPtr)); \
+    } else { \
+        envPtr->line   = mapPtr->loc[eclIndex].line[word]; \
+        envPtr->clNext = mapPtr->loc[eclIndex].next[word]; \
+	TclCompileTokens((interp), (tokenPtr)+1, (tokenPtr)->numComponents, \
+		(envPtr)); \
+    }
 
-/* TIP #280 : Remember the per-word line information of the current
- * command. An index is used instead of a pointer as recursive compilation may
- * reallocate, i.e. move, the array. This is also the reason to save the nuloc
- * now, it may change during the course of the function.
+/*
+ * TIP #280: Remember the per-word line information of the current command. An
+ * index is used instead of a pointer as recursive compilation may reallocate,
+ * i.e. move, the array. This is also the reason to save the nuloc now, it may
+ * change during the course of the function.
  *
- * Macros to encapsulate the variable definition and setup, and their use.
+ * Macro to encapsulate the variable definition and setup.
  */
+
 #define DefineLineInformation \
     ExtCmdLoc *mapPtr = envPtr->extCmdMapPtr; \
     int eclIndex = mapPtr->nuloc - 1
@@ -56,23 +51,163 @@ static int		TclPushVarName _ANSI_ARGS_((Tcl_Interp *interp,
 #define SetLineInformation(word) \
     envPtr->line   = mapPtr->loc [eclIndex].line [(word)]; \
     envPtr->clNext = mapPtr->loc [eclIndex].next [(word)]
-#endif
 
 /*
- * Flags bits used by TclPushVarName.
+ * Convenience macro for use when compiling bodies of commands. The ANSI C
+ * "prototype" for this macro is:
+ *
+ * static void		CompileBody(CompileEnv *envPtr, Tcl_Token *tokenPtr,
+ *			    Tcl_Interp *interp);
+ */
+
+#define CompileBody(envPtr, tokenPtr, interp) \
+    TclCompileCmdWord((interp), (tokenPtr)+1, (tokenPtr)->numComponents, \
+	    (envPtr))
+
+/*
+ * Convenience macro for use when compiling tokens to be pushed. The ANSI C
+ * "prototype" for this macro is:
+ *
+ * static void		CompileTokens(CompileEnv *envPtr, Tcl_Token *tokenPtr,
+ *			    Tcl_Interp *interp);
+ */
+
+#define CompileTokens(envPtr, tokenPtr, interp) \
+    TclCompileTokens((interp), (tokenPtr)+1, (tokenPtr)->numComponents, \
+            (envPtr));
+/*
+ * Convenience macro for use when pushing literals. The ANSI C "prototype" for
+ * this macro is:
+ *
+ * static void		PushLiteral(CompileEnv *envPtr,
+ *			    const char *string, int length);
+ */
+
+#define PushLiteral(envPtr, string, length) \
+    TclEmitPush(TclRegisterNewLiteral((envPtr), (string), (length)), (envPtr))
+
+/*
+ * Macro to advance to the next token; it is more mnemonic than the address
+ * arithmetic that it replaces. The ANSI C "prototype" for this macro is:
+ *
+ * static Tcl_Token *	TokenAfter(Tcl_Token *tokenPtr);
+ */
+
+#define TokenAfter(tokenPtr) \
+    ((tokenPtr) + ((tokenPtr)->numComponents + 1))
+
+/*
+ * Macro to get the offset to the next instruction to be issued. The ANSI C
+ * "prototype" for this macro is:
+ *
+ * static int	CurrentOffset(CompileEnv *envPtr);
+ */
+
+#define CurrentOffset(envPtr) \
+    ((envPtr)->codeNext - (envPtr)->codeStart)
+
+/*
+ * Note: the exceptDepth is a bit of a misnomer: TEBC only needs the
+ * maximal depth of nested CATCH ranges in order to alloc runtime
+ * memory. These macros should compute precisely that? OTOH, the nesting depth
+ * of LOOP ranges is an interesting datum for debugging purposes, and that is
+ * what we compute now.
+ *
+ * static int	DeclareExceptionRange(CompileEnv *envPtr, int type);
+ * static int	ExceptionRangeStarts(CompileEnv *envPtr, int index);
+ * static void	ExceptionRangeEnds(CompileEnv *envPtr, int index);
+ * static void	ExceptionRangeTarget(CompileEnv *envPtr, int index, LABEL);
+ */
+
+#define DeclareExceptionRange(envPtr, type) \
+    (TclCreateExceptRange((type), (envPtr)))
+#define ExceptionRangeStarts(envPtr, index) \
+    (((envPtr)->exceptDepth++), \
+    ((envPtr)->maxExceptDepth = \
+	    TclMax((envPtr)->exceptDepth, (envPtr)->maxExceptDepth)), \
+    ((envPtr)->exceptArrayPtr[(index)].codeOffset = CurrentOffset(envPtr)))
+#define ExceptionRangeEnds(envPtr, index) \
+    (((envPtr)->exceptDepth--), \
+    ((envPtr)->exceptArrayPtr[(index)].numCodeBytes = \
+	CurrentOffset(envPtr) - (envPtr)->exceptArrayPtr[(index)].codeOffset))
+#define ExceptionRangeTarget(envPtr, index, targetType) \
+    ((envPtr)->exceptArrayPtr[(index)].targetType = CurrentOffset(envPtr))
+
+/*
+ * Prototypes for procedures defined later in this file:
  */
 
-#define TCL_CREATE_VAR     1 /* Create a compiled local if none is found */
-#define TCL_NO_LARGE_INDEX 2 /* Do not return localIndex value > 255 */
+static ClientData	DupDictUpdateInfo(ClientData clientData);
+static void		FreeDictUpdateInfo(ClientData clientData);
+static void		PrintDictUpdateInfo(ClientData clientData,
+			    Tcl_Obj *appendObj, ByteCode *codePtr,
+			    unsigned int pcOffset);
+static ClientData	DupForeachInfo(ClientData clientData);
+static void		FreeForeachInfo(ClientData clientData);
+static void		PrintForeachInfo(ClientData clientData,
+			    Tcl_Obj *appendObj, ByteCode *codePtr,
+			    unsigned int pcOffset);
+static ClientData	DupJumptableInfo(ClientData clientData);
+static void		FreeJumptableInfo(ClientData clientData);
+static void		PrintJumptableInfo(ClientData clientData,
+			    Tcl_Obj *appendObj, ByteCode *codePtr,
+			    unsigned int pcOffset);
+static int		PushVarName(Tcl_Interp *interp,
+			    Tcl_Token *varTokenPtr, CompileEnv *envPtr,
+			    int flags, int *localIndexPtr,
+			    int *simpleVarNamePtr, int *isScalarPtr,
+			    int line, int* clNext);
+static int		CompileAssociativeBinaryOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, const char *identity,
+			    int instruction, CompileEnv *envPtr);
+static int		CompileComparisonOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, int instruction,
+			    CompileEnv *envPtr);
+static int		CompileStrictlyBinaryOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, int instruction,
+			    CompileEnv *envPtr);
+static int		CompileUnaryOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, int instruction,
+			    CompileEnv *envPtr);
+static void		CompileReturnInternal(CompileEnv *envPtr,
+			    unsigned char op, int code, int level,
+			    Tcl_Obj *returnOpts);
+
+#define PushVarNameWord(i,v,e,f,l,s,sc,word) \
+    PushVarName (i,v,e,f,l,s,sc,                       \
+                    mapPtr->loc [eclIndex].line [(word)], \
+	            mapPtr->loc [eclIndex].next [(word)])
+
+/*
+ * Flags bits used by PushVarName.
+ */
+
+#define TCL_CREATE_VAR     1	/* Create a compiled local if none is found */
+#define TCL_NO_LARGE_INDEX 2	/* Do not return localIndex value > 255 */
 
 /*
  * The structures below define the AuxData types defined in this file.
  */
 
 AuxDataType tclForeachInfoType = {
-    "ForeachInfo",				/* name */
-    DupForeachInfo,				/* dupProc */
-    FreeForeachInfo				/* freeProc */
+    "ForeachInfo",		/* name */
+    DupForeachInfo,		/* dupProc */
+    FreeForeachInfo,		/* freeProc */
+    PrintForeachInfo		/* printProc */
+};
+
+AuxDataType tclJumptableInfoType = {
+    "JumptableInfo",		/* name */
+    DupJumptableInfo,		/* dupProc */
+    FreeJumptableInfo,		/* freeProc */
+    PrintJumptableInfo		/* printProc */
+};
+
+AuxDataType tclDictUpdateInfoType = {
+    "DictUpdateInfo",		/* name */
+    DupDictUpdateInfo,		/* dupProc */
+    FreeDictUpdateInfo,		/* freeProc */
+    PrintDictUpdateInfo		/* printProc */
 };
 
 /*
@@ -83,89 +218,68 @@ AuxDataType tclForeachInfoType = {
  *	Procedure called to compile the "append" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is normally TCL_OK
- *	unless there was an error while parsing string. If an error occurs
- *	then the interpreter's result contains a standard error message. If
- *	compilation fails because the command requires a second level of
- *	substitutions, TCL_OUT_LINE_COMPILE is returned indicating that the
- *	command should be compiled "out of line" by emitting code to
- *	invoke its command procedure (Tcl_AppendObjCmd) at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "append" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "append" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileAppendCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileAppendCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *varTokenPtr, *valueTokenPtr;
     int simpleVarName, isScalar, localIndex, numWords;
-    int code = TCL_OK;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     numWords = parsePtr->numWords;
     if (numWords == 1) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		"wrong # args: should be \"append varName ?value value ...?\"",
-		-1);
 	return TCL_ERROR;
     } else if (numWords == 2) {
 	/*
-	 * append varName === set varName
+	 * append varName == set varName
 	 */
-        return TclCompileSetCmd(interp, parsePtr, envPtr);
+
+	return TclCompileSetCmd(interp, parsePtr, cmdPtr, envPtr);
     } else if (numWords > 3) {
 	/*
-	 * APPEND instructions currently only handle one value
+	 * APPEND instructions currently only handle one value.
 	 */
-        return TCL_OUT_LINE_COMPILE;
+
+	return TCL_ERROR;
     }
 
     /*
-     * Decide if we can use a frame slot for the var/array name or if we
-     * need to emit code to compute and push the name at runtime. We use a
-     * frame slot (entry in the array of local vars) if we are compiling a
-     * procedure body and if the name is simple text that does not include
-     * namespace qualifiers. 
+     * Decide if we can use a frame slot for the var/array name or if we need
+     * to emit code to compute and push the name at runtime. We use a frame
+     * slot (entry in the array of local vars) if we are compiling a procedure
+     * body and if the name is simple text that does not include namespace
+     * qualifiers.
      */
 
-    varTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
 
-    code = TclPushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
-	    &localIndex, &simpleVarName, &isScalar, 1);
-    if (code != TCL_OK) {
-	goto done;
-    }
+    PushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
+		    &localIndex, &simpleVarName, &isScalar, 1);
 
     /*
-     * We are doing an assignment, otherwise TclCompileSetCmd was called,
-     * so push the new value.  This will need to be extended to push a
-     * value for each argument.
+     * We are doing an assignment, otherwise TclCompileSetCmd was called, so
+     * push the new value. This will need to be extended to push a value for
+     * each argument.
      */
 
     if (numWords > 2) {
-	valueTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-	if (valueTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    TclEmitPush(TclRegisterNewLiteral(envPtr, 
-		    valueTokenPtr[1].start, valueTokenPtr[1].size), envPtr);
-	} else {
-	    SetLineInformation (2);
-	    code = TclCompileTokens(interp, valueTokenPtr+1,
-	            valueTokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
-	}
+	valueTokenPtr = TokenAfter(varTokenPtr);
+	CompileWord(envPtr, valueTokenPtr, interp, 2);
     }
 
     /*
@@ -174,32 +288,27 @@ TclCompileAppendCmd(interp, parsePtr, envPtr)
 
     if (simpleVarName) {
 	if (isScalar) {
-	    if (localIndex >= 0) {
-		if (localIndex <= 255) {
-		    TclEmitInstInt1(INST_APPEND_SCALAR1, localIndex, envPtr);
-		} else {
-		    TclEmitInstInt4(INST_APPEND_SCALAR4, localIndex, envPtr);
-		}
-	    } else {
+	    if (localIndex < 0) {
 		TclEmitOpcode(INST_APPEND_STK, envPtr);
+	    } else if (localIndex <= 255) {
+		TclEmitInstInt1(INST_APPEND_SCALAR1, localIndex, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_APPEND_SCALAR4, localIndex, envPtr);
 	    }
 	} else {
-	    if (localIndex >= 0) {
-		if (localIndex <= 255) {
-		    TclEmitInstInt1(INST_APPEND_ARRAY1, localIndex, envPtr);
-		} else {
-		    TclEmitInstInt4(INST_APPEND_ARRAY4, localIndex, envPtr);
-		}
-	    } else {
+	    if (localIndex < 0) {
 		TclEmitOpcode(INST_APPEND_ARRAY_STK, envPtr);
+	    } else if (localIndex <= 255) {
+		TclEmitInstInt1(INST_APPEND_ARRAY1, localIndex, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_APPEND_ARRAY4, localIndex, envPtr);
 	    }
 	}
     } else {
 	TclEmitOpcode(INST_APPEND_STK, envPtr);
     }
 
-    done:
-    return code;
+    return TCL_OK;
 }
 
 /*
@@ -210,28 +319,26 @@ TclCompileAppendCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "break" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK unless
- *	there was an error during compilation. If an error occurs then
- *	the interpreter's result contains a standard error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "break" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "break" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileBreakCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileBreakCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     if (parsePtr->numWords != 1) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"break\"", -1);
 	return TCL_ERROR;
     }
 
@@ -251,172 +358,239 @@ TclCompileBreakCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "catch" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	compilation was successful. If an error occurs then the
- *	interpreter's result contains a standard error message and TCL_ERROR
- *	is returned. If the command is too complex for TclCompileCatchCmd,
- *	TCL_OUT_LINE_COMPILE is returned indicating that the catch command
- *	should be compiled "out of line" by emitting code to invoke its
- *	command procedure at runtime.
+ *	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ *	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "catch" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "catch" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileCatchCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileCatchCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     JumpFixup jumpFixup;
-    Tcl_Token *cmdTokenPtr, *nameTokenPtr;
-    CONST char *name;
-    int localIndex, nameChars, range, startOffset, jumpDist;
-    int code;
-    int savedStackDepth = envPtr->currStackDepth;
+    Tcl_Token *cmdTokenPtr, *resultNameTokenPtr, *optsNameTokenPtr;
+    const char *name;
+    int resultIndex, optsIndex, nameChars, range;
+    int initStackDepth = envPtr->currStackDepth;
+    int savedStackDepth;
+    DefineLineInformation;	/* TIP #280 */
 
-    DefineLineInformation;
+    /*
+     * If syntax does not match what we expect for [catch], do not compile.
+     * Let runtime checks determine if syntax has changed.
+     */
 
-    if ((parsePtr->numWords != 2) && (parsePtr->numWords != 3)) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"catch command ?varName?\"", -1);
+    if ((parsePtr->numWords < 2) || (parsePtr->numWords > 4)) {
 	return TCL_ERROR;
     }
 
     /*
-     * If a variable was specified and the catch command is at global level
-     * (not in a procedure), don't compile it inline: the payoff is
-     * too small.
+     * If variables were specified and the catch command is at global level
+     * (not in a procedure), don't compile it inline: the payoff is too small.
      */
 
-    if ((parsePtr->numWords == 3) && (envPtr->procPtr == NULL)) {
-	return TCL_OUT_LINE_COMPILE;
+    if ((parsePtr->numWords >= 3) && (envPtr->procPtr == NULL)) {
+	return TCL_ERROR;
     }
 
     /*
-     * Make sure the variable name, if any, has no substitutions and just
-     * refers to a local scaler.
+     * Make sure the variable names, if any, have no substitutions and just
+     * refer to local scalars.
      */
 
-    localIndex = -1;
-    cmdTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
-    if (parsePtr->numWords == 3) {
-	nameTokenPtr = cmdTokenPtr + (cmdTokenPtr->numComponents + 1);
-	if (nameTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    name = nameTokenPtr[1].start;
-	    nameChars = nameTokenPtr[1].size;
+    resultIndex = optsIndex = -1;
+    cmdTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (parsePtr->numWords >= 3) {
+	resultNameTokenPtr = TokenAfter(cmdTokenPtr);
+	/* DGP */
+	if (resultNameTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    return TCL_ERROR;
+	}
+
+	name = resultNameTokenPtr[1].start;
+	nameChars = resultNameTokenPtr[1].size;
+	if (!TclIsLocalScalar(name, nameChars)) {
+	    return TCL_ERROR;
+	}
+	resultIndex = TclFindCompiledLocal(resultNameTokenPtr[1].start,
+		resultNameTokenPtr[1].size, /*create*/ 1, envPtr->procPtr);
+	if (resultIndex < 0) {
+	    return TCL_ERROR;
+	}
+
+	/* DKF */
+	if (parsePtr->numWords == 4) {
+	    optsNameTokenPtr = TokenAfter(resultNameTokenPtr);
+	    if (optsNameTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+		return TCL_ERROR;
+	    }
+	    name = optsNameTokenPtr[1].start;
+	    nameChars = optsNameTokenPtr[1].size;
 	    if (!TclIsLocalScalar(name, nameChars)) {
-		return TCL_OUT_LINE_COMPILE;
+		return TCL_ERROR;
+	    }
+	    optsIndex = TclFindCompiledLocal(optsNameTokenPtr[1].start,
+		    optsNameTokenPtr[1].size, /*create*/ 1, envPtr->procPtr);
+	    if (optsIndex < 0) {
+		return TCL_ERROR;
 	    }
-	    localIndex = TclFindCompiledLocal(nameTokenPtr[1].start,
-		    nameTokenPtr[1].size, /*create*/ 1, 
-		    /*flags*/ VAR_SCALAR, envPtr->procPtr);
-	} else {
-	   return TCL_OUT_LINE_COMPILE;
 	}
     }
 
     /*
-     * We will compile the catch command. Emit a beginCatch instruction at
-     * the start of the catch body: the subcommand it controls.
+     * We will compile the catch command. Declare the exception range
+     * that it uses.
      */
-    
-    envPtr->exceptDepth++;
-    envPtr->maxExceptDepth =
-	TclMax(envPtr->exceptDepth, envPtr->maxExceptDepth);
-    range = TclCreateExceptRange(CATCH_EXCEPTION_RANGE, envPtr);
-    TclEmitInstInt4(INST_BEGIN_CATCH4, range, envPtr);
+
+    range = DeclareExceptionRange(envPtr, CATCH_EXCEPTION_RANGE);
 
     /*
-     * If the body is a simple word, compile the instructions to
-     * eval it. Otherwise, compile instructions to substitute its
-     * text without catching, a catch instruction that resets the 
-     * stack to what it was before substituting the body, and then 
-     * an instruction to eval the body. Care has to be taken to 
-     * register the correct startOffset for the catch range so that
-     * errors in the substitution are not catched [Bug 219184]
+     * If the body is a simple word, compile a BEGIN_CATCH instruction,
+     * followed by the instructions to eval the body.
+     * Otherwise, compile instructions to substitute the body text before
+     * starting the catch, then BEGIN_CATCH, and then EVAL_STK to
+     * evaluate the substituted body.
+     * Care has to be taken to make sure that substitution happens outside
+     * the catch range so that errors in the substitution are not caught.
+     * [Bug 219184]
+     * The reason for duplicating the script is that EVAL_STK would otherwise
+     * begin by undeflowing the stack below the mark set by BEGIN_CATCH4.
      */
 
-    SetLineInformation (1);
+    SetLineInformation(1);
     if (cmdTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	startOffset = (envPtr->codeNext - envPtr->codeStart);
-	code = TclCompileCmdWord(interp, cmdTokenPtr+1, 1, envPtr);
+	savedStackDepth = envPtr->currStackDepth;
+	TclEmitInstInt4(INST_BEGIN_CATCH4, range, envPtr);
+	ExceptionRangeStarts(envPtr, range);
+	CompileBody(envPtr, cmdTokenPtr, interp);
     } else {
-	code = TclCompileTokens(interp, cmdTokenPtr+1,
-	        cmdTokenPtr->numComponents, envPtr);
-	startOffset = (envPtr->codeNext - envPtr->codeStart);
+	CompileTokens(envPtr, cmdTokenPtr, interp);
+	savedStackDepth = envPtr->currStackDepth;
+	TclEmitInstInt4(INST_BEGIN_CATCH4, range, envPtr);
+	ExceptionRangeStarts(envPtr, range);
+	TclEmitOpcode(INST_DUP, envPtr);
 	TclEmitOpcode(INST_EVAL_STK, envPtr);
     }
-    envPtr->exceptArrayPtr[range].codeOffset = startOffset;
+    /* Stack at this point:
+     *    nonsimple:  script <mark> result
+     *    simple:            <mark> result
+     */
 
-    if (code != TCL_OK) {
-	code = TCL_OUT_LINE_COMPILE;
-	goto done;
-    }
-    envPtr->exceptArrayPtr[range].numCodeBytes =
-	    (envPtr->codeNext - envPtr->codeStart) - startOffset;
-		    
     /*
-     * The "no errors" epilogue code: store the body's result into the
-     * variable (if any), push "0" (TCL_OK) as the catch's "no error"
+     * Emit the "no errors" epilogue: push "0" (TCL_OK) as the catch
      * result, and jump around the "error case" code.
      */
 
-    if (localIndex != -1) {
-	if (localIndex <= 255) {
-	    TclEmitInstInt1(INST_STORE_SCALAR1, localIndex, envPtr);
+    PushLiteral(envPtr, "0", 1);
+    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP, &jumpFixup);
+    /* Stack at this point: ?script? <mark> result TCL_OK */
+
+    /*
+     * Emit the "error case" epilogue. Push the interpreter result
+     * and the return code.
+     */
+
+    envPtr->currStackDepth = savedStackDepth;
+    ExceptionRangeTarget(envPtr, range, catchOffset);
+    /* Stack at this point:  ?script? */
+    TclEmitOpcode(INST_PUSH_RESULT, envPtr);
+    TclEmitOpcode(INST_PUSH_RETURN_CODE, envPtr);
+
+    /*
+     * Update the target of the jump after the "no errors" code.
+     */
+
+    /* Stack at this point: ?script? result returnCode */
+    if (TclFixupForwardJumpToHere(envPtr, &jumpFixup, 127)) {
+	Tcl_Panic("TclCompileCatchCmd: bad jump distance %d",
+		(int) (CurrentOffset(envPtr) - jumpFixup.codeOffset));
+    }
+
+    /* Push the return options if the caller wants them */
+
+    if (optsIndex != -1) {
+	TclEmitOpcode(INST_PUSH_RETURN_OPTIONS, envPtr);
+    }
+
+    /*
+     * End the catch
+     */
+
+    ExceptionRangeEnds(envPtr, range);
+    TclEmitOpcode(INST_END_CATCH, envPtr);
+
+    /*
+     * At this point, the top of the stack is inconveniently ordered:
+     *		?script? result returnCode ?returnOptions?
+     * Reverse the stack to bring the result to the top.
+     */
+
+    if (optsIndex != -1) {
+	TclEmitInstInt4(INST_REVERSE, 3, envPtr);
+    } else {
+	TclEmitInstInt4(INST_REVERSE, 2, envPtr);
+    }
+
+    /*
+     * Store the result if requested, and remove it from the stack
+     */
+
+    if (resultIndex != -1) {
+	if (resultIndex <= 255) {
+	    TclEmitInstInt1(INST_STORE_SCALAR1, resultIndex, envPtr);
 	} else {
-	    TclEmitInstInt4(INST_STORE_SCALAR4, localIndex, envPtr);
+	    TclEmitInstInt4(INST_STORE_SCALAR4, resultIndex, envPtr);
 	}
     }
     TclEmitOpcode(INST_POP, envPtr);
-    TclEmitPush(TclRegisterNewLiteral(envPtr, "0", 1), envPtr);
-    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP, &jumpFixup);
 
     /*
-     * The "error case" code: store the body's result into the variable (if
-     * any), then push the error result code. The initial PC offset here is
-     * the catch's error target.
+     * Stack is now ?script? ?returnOptions? returnCode.
+     * If the options dict has been requested, it is buried on the stack
+     * under the return code. Reverse the stack to bring it to the top,
+     * store it and remove it from the stack.
      */
 
-    envPtr->currStackDepth = savedStackDepth;
-    envPtr->exceptArrayPtr[range].catchOffset =
-	    (envPtr->codeNext - envPtr->codeStart);
-    if (localIndex != -1) {
-	TclEmitOpcode(INST_PUSH_RESULT, envPtr);
-	if (localIndex <= 255) {
-	    TclEmitInstInt1(INST_STORE_SCALAR1, localIndex, envPtr);
+    if (optsIndex != -1) {
+	TclEmitInstInt4(INST_REVERSE, 2, envPtr);
+	if (optsIndex <= 255) {
+	    TclEmitInstInt1(INST_STORE_SCALAR1, optsIndex, envPtr);
 	} else {
-	    TclEmitInstInt4(INST_STORE_SCALAR4, localIndex, envPtr);
+	    TclEmitInstInt4(INST_STORE_SCALAR4, optsIndex, envPtr);
 	}
 	TclEmitOpcode(INST_POP, envPtr);
     }
-    TclEmitOpcode(INST_PUSH_RETURN_CODE, envPtr);
-
 
     /*
-     * Update the target of the jump after the "no errors" code, then emit
-     * an endCatch instruction at the end of the catch command.
+     * Stack is now ?script? result. Get rid of the subst'ed script
+     * if it's hanging arond.
      */
 
-    jumpDist = (envPtr->codeNext - envPtr->codeStart)
-	    - jumpFixup.codeOffset;
-    if (TclFixupForwardJump(envPtr, &jumpFixup, jumpDist, 127)) {
-	panic("TclCompileCatchCmd: bad jump distance %d\n", jumpDist);
+    if (cmdTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	TclEmitInstInt4(INST_REVERSE, 2, envPtr);
+	TclEmitOpcode(INST_POP, envPtr);
     }
-    TclEmitOpcode(INST_END_CATCH, envPtr);
 
-    done:
-    envPtr->currStackDepth = savedStackDepth + 1;
-    envPtr->exceptDepth--;
-    return code;
+    /*
+     * Result of all this, on either branch, should have been to leave
+     * one operand -- the return code -- on the stack.
+     */
+
+    if (envPtr->currStackDepth != initStackDepth + 1) {
+	Tcl_Panic("in TclCompileCatchCmd, currStackDepth = %d should be %d",
+		  envPtr->currStackDepth, initStackDepth+1);
+    }
+    return TCL_OK;
 }
 
 /*
@@ -427,32 +601,30 @@ TclCompileCatchCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "continue" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK unless
- *	there was an error while parsing string. If an error occurs then
- *	the interpreter's result contains a standard error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "continue" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "continue" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileContinueCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileContinueCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     /*
      * There should be no argument after the "continue".
      */
 
     if (parsePtr->numWords != 1) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"continue\"", -1);
 	return TCL_ERROR;
     }
 
@@ -467,45 +639,789 @@ TclCompileContinueCmd(interp, parsePtr, envPtr)
 /*
  *----------------------------------------------------------------------
  *
+ * TclCompileDict*Cmd --
+ *
+ *	Functions called to compile "dict" sucommands.
+ *
+ * Results:
+ * 	All return TCL_OK for a successful compile, and TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "dict" subcommand at
+ *	runtime.
+ *
+ * Notes:
+ *	The following commands are in fairly common use and are possibly worth
+ *	bytecoding:
+ *		dict append
+ *		dict create	[*]
+ *		dict exists	[*]
+ *		dict for
+ *		dict get	[*]
+ *		dict incr
+ *		dict keys	[*]
+ *		dict lappend
+ *		dict set
+ *		dict unset
+ *
+ *	In practice, those that are pure-value operators (marked with [*]) can
+ *	probably be left alone (except perhaps [dict get] which is very very
+ *	common) and [dict update] should be considered instead (really big
+ *	win!)
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileDictSetCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr;
+    int numWords, i;
+    Proc *procPtr = envPtr->procPtr;
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *varTokenPtr;
+    int dictVarIndex, nameChars;
+    const char *name;
+
+    /*
+     * There must be at least one argument after the command.
+     */
+
+    if (parsePtr->numWords < 4 || procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * The dictionary variable must be a local scalar that is knowable at
+     * compile time; anything else exceeds the complexity of the opcode. So
+     * discover what the index is.
+     */
+
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (varTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	return TCL_ERROR;
+    }
+    name = varTokenPtr[1].start;
+    nameChars = varTokenPtr[1].size;
+    if (!TclIsLocalScalar(name, nameChars)) {
+	return TCL_ERROR;
+    }
+    dictVarIndex = TclFindCompiledLocal(name, nameChars, 1, procPtr);
+
+    /*
+     * Remaining words (key path and value to set) can be handled normally.
+     */
+
+    tokenPtr = TokenAfter(varTokenPtr);
+    numWords = parsePtr->numWords-1;
+    for (i=1 ; i<numWords ; i++) {
+	CompileWord(envPtr, tokenPtr, interp, i);
+	tokenPtr = TokenAfter(tokenPtr);
+    }
+
+    /*
+     * Now emit the instruction to do the dict manipulation.
+     */
+
+    TclEmitInstInt4( INST_DICT_SET, numWords-2,		envPtr);
+    TclEmitInt4(     dictVarIndex,			envPtr);
+    return TCL_OK;
+}
+
+int
+TclCompileDictIncrCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Proc *procPtr = envPtr->procPtr;
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *varTokenPtr, *keyTokenPtr;
+    int dictVarIndex, nameChars, incrAmount;
+    const char *name;
+
+    /*
+     * There must be at least two arguments after the command.
+     */
+
+    if (parsePtr->numWords < 3 || parsePtr->numWords > 4 || procPtr == NULL) {
+	return TCL_ERROR;
+    }
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    keyTokenPtr = TokenAfter(varTokenPtr);
+
+    /*
+     * Parse the increment amount, if present.
+     */
+
+    if (parsePtr->numWords == 4) {
+	const char *word;
+	int numBytes, code;
+	Tcl_Token *incrTokenPtr;
+	Tcl_Obj *intObj;
+
+	incrTokenPtr = TokenAfter(keyTokenPtr);
+	if (incrTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    return TCL_ERROR;
+	}
+	word = incrTokenPtr[1].start;
+	numBytes = incrTokenPtr[1].size;
+
+	intObj = Tcl_NewStringObj(word, numBytes);
+	Tcl_IncrRefCount(intObj);
+	code = TclGetIntFromObj(NULL, intObj, &incrAmount);
+	TclDecrRefCount(intObj);
+	if (code != TCL_OK) {
+	    return TCL_ERROR;
+	}
+    } else {
+	incrAmount = 1;
+    }
+
+    /*
+     * The dictionary variable must be a local scalar that is knowable at
+     * compile time; anything else exceeds the complexity of the opcode. So
+     * discover what the index is.
+     */
+
+    if (varTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	return TCL_ERROR;
+    }
+    name = varTokenPtr[1].start;
+    nameChars = varTokenPtr[1].size;
+    if (!TclIsLocalScalar(name, nameChars)) {
+	return TCL_ERROR;
+    }
+    dictVarIndex = TclFindCompiledLocal(name, nameChars, 1, procPtr);
+
+    /*
+     * Emit the key and the code to actually do the increment.
+     */
+
+    CompileWord(envPtr, keyTokenPtr, interp, 3);
+    TclEmitInstInt4( INST_DICT_INCR_IMM, incrAmount,	envPtr);
+    TclEmitInt4(     dictVarIndex,			envPtr);
+    return TCL_OK;
+}
+
+int
+TclCompileDictGetCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr;
+    int numWords, i;
+    DefineLineInformation;	/* TIP #280 */
+
+    /*
+     * There must be at least two arguments after the command (the single-arg
+     * case is legal, but too special and magic for us to deal with here).
+     */
+
+    if (parsePtr->numWords < 3) {
+	return TCL_ERROR;
+    }
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    numWords = parsePtr->numWords-1;
+
+    /*
+     * Only compile this because we need INST_DICT_GET anyway.
+     */
+
+    for (i=0 ; i<numWords ; i++) {
+	CompileWord(envPtr, tokenPtr, interp, i);
+	tokenPtr = TokenAfter(tokenPtr);
+    }
+    TclEmitInstInt4(INST_DICT_GET, numWords-1, envPtr);
+    return TCL_OK;
+}
+
+int
+TclCompileDictForCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Proc *procPtr = envPtr->procPtr;
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *varsTokenPtr, *dictTokenPtr, *bodyTokenPtr;
+    int keyVarIndex, valueVarIndex, nameChars, loopRange, catchRange;
+    int infoIndex, jumpDisplacement, bodyTargetOffset, emptyTargetOffset;
+    int numVars, endTargetOffset;
+    int savedStackDepth = envPtr->currStackDepth;
+				/* Needed because jumps confuse the stack
+				 * space calculator. */
+    const char **argv;
+    Tcl_DString buffer;
+
+    /*
+     * There must be at least three argument after the command.
+     */
+
+    if (parsePtr->numWords != 4 || procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    varsTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    dictTokenPtr = TokenAfter(varsTokenPtr);
+    bodyTokenPtr = TokenAfter(dictTokenPtr);
+    if (varsTokenPtr->type != TCL_TOKEN_SIMPLE_WORD ||
+	    bodyTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Check we've got a pair of variables and that they are local variables.
+     * Then extract their indices in the LVT.
+     */
+
+    Tcl_DStringInit(&buffer);
+    Tcl_DStringAppend(&buffer, varsTokenPtr[1].start, varsTokenPtr[1].size);
+    if (Tcl_SplitList(NULL, Tcl_DStringValue(&buffer), &numVars,
+	    &argv) != TCL_OK) {
+	Tcl_DStringFree(&buffer);
+	return TCL_ERROR;
+    }
+    Tcl_DStringFree(&buffer);
+    if (numVars != 2) {
+	ckfree((char *) argv);
+	return TCL_ERROR;
+    }
+
+    nameChars = strlen(argv[0]);
+    if (!TclIsLocalScalar(argv[0], nameChars)) {
+	ckfree((char *) argv);
+	return TCL_ERROR;
+    }
+    keyVarIndex = TclFindCompiledLocal(argv[0], nameChars, 1, procPtr);
+
+    nameChars = strlen(argv[1]);
+    if (!TclIsLocalScalar(argv[1], nameChars)) {
+	ckfree((char *) argv);
+	return TCL_ERROR;
+    }
+    valueVarIndex = TclFindCompiledLocal(argv[1], nameChars, 1, procPtr);
+    ckfree((char *) argv);
+
+    /*
+     * Allocate a temporary variable to store the iterator reference. The
+     * variable will contain a Tcl_DictSearch reference which will be
+     * allocated by INST_DICT_FIRST and disposed when the variable is unset
+     * (at which point it should also have been finished with).
+     */
+
+    infoIndex = TclFindCompiledLocal(NULL, 0, 1, procPtr);
+
+    /*
+     * Preparation complete; issue instructions. Note that this code issues
+     * fixed-sized jumps. That simplifies things a lot!
+     *
+     * First up, get the dictionary and start the iteration. No catching of
+     * errors at this point.
+     */
+
+    CompileWord(envPtr, dictTokenPtr, interp, 3);
+    TclEmitInstInt4( INST_DICT_FIRST, infoIndex,		envPtr);
+    emptyTargetOffset = CurrentOffset(envPtr);
+    TclEmitInstInt4( INST_JUMP_TRUE4, 0,			envPtr);
+
+    /*
+     * Now we catch errors from here on so that we can finalize the search
+     * started by Tcl_DictObjFirst above.
+     */
+
+    catchRange = DeclareExceptionRange(envPtr, CATCH_EXCEPTION_RANGE);
+    TclEmitInstInt4( INST_BEGIN_CATCH4, catchRange,		envPtr);
+    ExceptionRangeStarts(envPtr, catchRange);
+
+    /*
+     * Inside the iteration, write the loop variables.
+     */
+
+    bodyTargetOffset = CurrentOffset(envPtr);
+    TclEmitInstInt4( INST_STORE_SCALAR4, keyVarIndex,		envPtr);
+    TclEmitOpcode(   INST_POP,					envPtr);
+    TclEmitInstInt4( INST_STORE_SCALAR4, valueVarIndex,		envPtr);
+    TclEmitOpcode(   INST_POP,					envPtr);
+
+    /*
+     * Set up the loop exception targets.
+     */
+
+    loopRange = DeclareExceptionRange(envPtr, LOOP_EXCEPTION_RANGE);
+    ExceptionRangeStarts(envPtr, loopRange);
+
+    /*
+     * Compile the loop body itself. It should be stack-neutral.
+     */
+
+    SetLineInformation(3);
+    CompileBody(envPtr, bodyTokenPtr, interp);
+    TclEmitOpcode(   INST_POP,					envPtr);
+
+    /*
+     * Both exception target ranges (error and loop) end here.
+     */
+
+    ExceptionRangeEnds(envPtr, loopRange);
+    ExceptionRangeEnds(envPtr, catchRange);
+
+    /*
+     * Continue (or just normally process) by getting the next pair of items
+     * from the dictionary and jumping back to the code to write them into
+     * variables if there is another pair.
+     */
+
+    ExceptionRangeTarget(envPtr, loopRange, continueOffset);
+    TclEmitInstInt4( INST_DICT_NEXT, infoIndex,			envPtr);
+    jumpDisplacement = bodyTargetOffset - CurrentOffset(envPtr);
+    TclEmitInstInt4( INST_JUMP_FALSE4, jumpDisplacement,	envPtr);
+    TclEmitOpcode(   INST_POP,					envPtr);
+    TclEmitOpcode(   INST_POP,					envPtr);
+
+    /*
+     * Now do the final cleanup for the no-error case (this is where we break
+     * out of the loop to) by force-terminating the iteration (if not already
+     * terminated), ditching the exception info and jumping to the last
+     * instruction for this command. In theory, this could be done using the
+     * "finally" clause (next generated) but this is faster.
+     */
+
+    ExceptionRangeTarget(envPtr, loopRange, breakOffset);
+    TclEmitInstInt4( INST_DICT_DONE, infoIndex,			envPtr);
+    TclEmitOpcode(   INST_END_CATCH,				envPtr);
+    endTargetOffset = CurrentOffset(envPtr);
+    TclEmitInstInt4( INST_JUMP4, 0,				envPtr);
+
+    /*
+     * Error handler "finally" clause, which force-terminates the iteration
+     * and rethrows the error.
+     */
+
+    ExceptionRangeTarget(envPtr, catchRange, catchOffset);
+    TclEmitOpcode(   INST_PUSH_RETURN_OPTIONS,			envPtr);
+    TclEmitOpcode(   INST_PUSH_RESULT,				envPtr);
+    TclEmitInstInt4( INST_DICT_DONE, infoIndex,			envPtr);
+    TclEmitOpcode(   INST_END_CATCH,				envPtr);
+    TclEmitOpcode(   INST_RETURN_STK,				envPtr);
+
+    /*
+     * Otherwise we're done (the jump after the DICT_FIRST points here) and we
+     * need to pop the bogus key/value pair (pushed to keep stack calculations
+     * easy!) Note that we skip the END_CATCH. [Bug 1382528]
+     */
+
+    envPtr->currStackDepth = savedStackDepth+2;
+    jumpDisplacement = CurrentOffset(envPtr) - emptyTargetOffset;
+    TclUpdateInstInt4AtPc(INST_JUMP_TRUE4, jumpDisplacement,
+	    envPtr->codeStart + emptyTargetOffset);
+    TclEmitOpcode(   INST_POP,					envPtr);
+    TclEmitOpcode(   INST_POP,					envPtr);
+    TclEmitInstInt4( INST_DICT_DONE, infoIndex,			envPtr);
+
+    /*
+     * Final stage of the command (normal case) is that we push an empty
+     * object. This is done last to promote peephole optimization when it's
+     * dropped immediately.
+     */
+
+    jumpDisplacement = CurrentOffset(envPtr) - endTargetOffset;
+    TclUpdateInstInt4AtPc(INST_JUMP4, jumpDisplacement,
+	    envPtr->codeStart + endTargetOffset);
+    PushLiteral(envPtr, "", 0);
+    return TCL_OK;
+}
+
+int
+TclCompileDictUpdateCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Proc *procPtr = envPtr->procPtr;
+    DefineLineInformation;	/* TIP #280 */
+    const char *name;
+    int i, nameChars, dictIndex, numVars, range, infoIndex;
+    Tcl_Token **keyTokenPtrs, *dictVarTokenPtr, *bodyTokenPtr, *tokenPtr;
+    DictUpdateInfo *duiPtr;
+    JumpFixup jumpFixup;
+
+    /*
+     * There must be at least one argument after the command.
+     */
+
+    if (parsePtr->numWords < 5 || procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Parse the command. Expect the following:
+     *   dict update <lit(eral)> <any> <lit> ?<any> <lit> ...? <lit>
+     */
+
+    if ((parsePtr->numWords - 1) & 1) {
+	return TCL_ERROR;
+    }
+    numVars = (parsePtr->numWords - 3) / 2;
+
+    /*
+     * The dictionary variable must be a local scalar that is knowable at
+     * compile time; anything else exceeds the complexity of the opcode. So
+     * discover what the index is.
+     */
+
+    dictVarTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (dictVarTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	return TCL_ERROR;
+    }
+    name = dictVarTokenPtr[1].start;
+    nameChars = dictVarTokenPtr[1].size;
+    if (!TclIsLocalScalar(name, nameChars)) {
+	return TCL_ERROR;
+    }
+    dictIndex = TclFindCompiledLocal(name, nameChars, 1, procPtr);
+
+    /*
+     * Assemble the instruction metadata. This is complex enough that it is
+     * represented as auxData; it holds an ordered list of variable indices
+     * that are to be used.
+     */
+
+    duiPtr = (DictUpdateInfo *)
+	    ckalloc(sizeof(DictUpdateInfo) + sizeof(int) * (numVars - 1));
+    duiPtr->length = numVars;
+    keyTokenPtrs = (Tcl_Token **) TclStackAlloc(interp,
+	    sizeof(Tcl_Token *) * numVars);
+    tokenPtr = TokenAfter(dictVarTokenPtr);
+
+    for (i=0 ; i<numVars ; i++) {
+	/*
+	 * Put keys to one side for later compilation to bytecode.
+	 */
+
+	keyTokenPtrs[i] = tokenPtr;
+
+	/*
+	 * Variables first need to be checked for sanity.
+	 */
+
+	tokenPtr = TokenAfter(tokenPtr);
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    ckfree((char *) duiPtr);
+	    TclStackFree(interp, keyTokenPtrs);
+	    return TCL_ERROR;
+	}
+	name = tokenPtr[1].start;
+	nameChars = tokenPtr[1].size;
+	if (!TclIsLocalScalar(name, nameChars)) {
+	    ckfree((char *) duiPtr);
+	    TclStackFree(interp, keyTokenPtrs);
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Stash the index in the auxiliary data.
+	 */
+
+	duiPtr->varIndices[i] =
+		TclFindCompiledLocal(name, nameChars, 1, procPtr);
+	tokenPtr = TokenAfter(tokenPtr);
+    }
+    if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	ckfree((char *) duiPtr);
+	TclStackFree(interp, keyTokenPtrs);
+	return TCL_ERROR;
+    }
+    bodyTokenPtr = tokenPtr;
+
+    /*
+     * The list of variables to bind is stored in auxiliary data so that it
+     * can't be snagged by literal sharing and forced to shimmer dangerously.
+     */
+
+    infoIndex = TclCreateAuxData(duiPtr, &tclDictUpdateInfoType, envPtr);
+
+    for (i=0 ; i<numVars ; i++) {
+	CompileWord(envPtr, keyTokenPtrs[i], interp, i);
+    }
+    TclEmitInstInt4( INST_LIST, numVars,			envPtr);
+    TclEmitInstInt4( INST_DICT_UPDATE_START, dictIndex,		envPtr);
+    TclEmitInt4(     infoIndex,					envPtr);
+
+    range = DeclareExceptionRange(envPtr, CATCH_EXCEPTION_RANGE);
+    TclEmitInstInt4( INST_BEGIN_CATCH4, range,			envPtr);
+
+    ExceptionRangeStarts(envPtr, range);
+    SetLineInformation(parsePtr->numWords - 1);
+    CompileBody(envPtr, bodyTokenPtr, interp);
+    ExceptionRangeEnds(envPtr, range);
+
+    /*
+     * Normal termination code: the stack has the key list below the result of
+     * the body evaluation: swap them and finish the update code.
+     */
+
+    TclEmitOpcode(   INST_END_CATCH,				envPtr);
+    TclEmitInstInt4( INST_REVERSE, 2,				envPtr);
+    TclEmitInstInt4( INST_DICT_UPDATE_END, dictIndex,		envPtr);
+    TclEmitInt4(     infoIndex,					envPtr);
+
+    /*
+     * Jump around the exceptional termination code.
+     */
+
+    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP, &jumpFixup);
+
+    /*
+     * Termination code for non-ok returns: stash the result and return
+     * options in the stack, bring up the key list, finish the update code,
+     * and finally return with the catched return data
+     */
+
+    ExceptionRangeTarget(envPtr, range, catchOffset);
+    TclEmitOpcode(   INST_PUSH_RESULT,				envPtr);
+    TclEmitOpcode(   INST_PUSH_RETURN_OPTIONS,			envPtr);
+    TclEmitOpcode(   INST_END_CATCH,				envPtr);
+    TclEmitInstInt4( INST_REVERSE, 3,				envPtr);
+
+    TclEmitInstInt4( INST_DICT_UPDATE_END, dictIndex,		envPtr);
+    TclEmitInt4(     infoIndex,					envPtr);
+    TclEmitOpcode(   INST_RETURN_STK,				envPtr);
+
+    if (TclFixupForwardJumpToHere(envPtr, &jumpFixup, 127)) {
+	Tcl_Panic("TclCompileDictCmd(update): bad jump distance %d",
+		(int) (CurrentOffset(envPtr) - jumpFixup.codeOffset));
+    }
+    TclStackFree(interp, keyTokenPtrs);
+    return TCL_OK;
+}
+
+int
+TclCompileDictAppendCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Proc *procPtr = envPtr->procPtr;
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *tokenPtr;
+    int i, dictVarIndex;
+
+    /*
+     * There must be at least two argument after the command. And we impose an
+     * (arbirary) safe limit; anyone exceeding it should stop worrying about
+     * speed quite so much. ;-)
+     */
+
+    if (parsePtr->numWords<4 || parsePtr->numWords>100 || procPtr==NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Get the index of the local variable that we will be working with.
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	return TCL_ERROR;
+    } else {
+	register const char *name = tokenPtr[1].start;
+	register int nameChars = tokenPtr[1].size;
+
+	if (!TclIsLocalScalar(name, nameChars)) {
+	    return TCL_ERROR;
+	}
+	dictVarIndex = TclFindCompiledLocal(name, nameChars, 1, procPtr);
+    }
+
+    /*
+     * Produce the string to concatenate onto the dictionary entry.
+     */
+
+    tokenPtr = TokenAfter(tokenPtr);
+    for (i=2 ; i<parsePtr->numWords ; i++) {
+	CompileWord(envPtr, tokenPtr, interp, i);
+	tokenPtr = TokenAfter(tokenPtr);
+    }
+    if (parsePtr->numWords > 4) {
+	TclEmitInstInt1(INST_CONCAT1, parsePtr->numWords-3, envPtr);
+    }
+
+    /*
+     * Do the concatenation.
+     */
+
+    TclEmitInstInt4(INST_DICT_APPEND, dictVarIndex, envPtr);
+    return TCL_OK;
+}
+
+int
+TclCompileDictLappendCmd(
+    Tcl_Interp *interp,		/* Used for looking up stuff. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Proc *procPtr = envPtr->procPtr;
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *varTokenPtr, *keyTokenPtr, *valueTokenPtr;
+    int dictVarIndex, nameChars;
+    const char *name;
+
+    /*
+     * There must be three arguments after the command.
+     */
+
+    if (parsePtr->numWords != 4 || procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    keyTokenPtr = TokenAfter(varTokenPtr);
+    valueTokenPtr = TokenAfter(keyTokenPtr);
+    if (varTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	return TCL_ERROR;
+    }
+    name = varTokenPtr[1].start;
+    nameChars = varTokenPtr[1].size;
+    if (!TclIsLocalScalar(name, nameChars)) {
+	return TCL_ERROR;
+    }
+    dictVarIndex = TclFindCompiledLocal(name, nameChars, 1, procPtr);
+    CompileWord(envPtr, keyTokenPtr, interp, 3);
+    CompileWord(envPtr, valueTokenPtr, interp, 4);
+    TclEmitInstInt4( INST_DICT_LAPPEND, dictVarIndex, envPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DupDictUpdateInfo, FreeDictUpdateInfo --
+ *
+ *	Functions to duplicate, release and print the aux data created for use
+ *	with the INST_DICT_UPDATE_START and INST_DICT_UPDATE_END instructions.
+ *
+ * Results:
+ *	DupDictUpdateInfo: a copy of the auxiliary data
+ *	FreeDictUpdateInfo: none
+ *	PrintDictUpdateInfo: none
+ *
+ * Side effects:
+ *	DupDictUpdateInfo: allocates memory
+ *	FreeDictUpdateInfo: releases memory
+ *	PrintDictUpdateInfo: none
+ *
+ *----------------------------------------------------------------------
+ */
+
+static ClientData
+DupDictUpdateInfo(
+    ClientData clientData)
+{
+    DictUpdateInfo *dui1Ptr, *dui2Ptr;
+    unsigned len;
+
+    dui1Ptr = clientData;
+    len = sizeof(DictUpdateInfo) + sizeof(int) * (dui1Ptr->length - 1);
+    dui2Ptr = (DictUpdateInfo *) ckalloc(len);
+    memcpy(dui2Ptr, dui1Ptr, len);
+    return dui2Ptr;
+}
+
+static void
+FreeDictUpdateInfo(
+    ClientData clientData)
+{
+    ckfree(clientData);
+}
+
+static void
+PrintDictUpdateInfo(
+    ClientData clientData,
+    Tcl_Obj *appendObj,
+    ByteCode *codePtr,
+    unsigned int pcOffset)
+{
+    DictUpdateInfo *duiPtr = clientData;
+    int i;
+
+    for (i=0 ; i<duiPtr->length ; i++) {
+	if (i) {
+	    Tcl_AppendToObj(appendObj, ", ", -1);
+	}
+	Tcl_AppendPrintfToObj(appendObj, "%%v%u", duiPtr->varIndices[i]);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TclCompileExprCmd --
  *
  *	Procedure called to compile the "expr" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK
- *	unless there was an error while parsing string. If an error occurs
- *	then the interpreter's result contains a standard error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "expr" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "expr" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileExprCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileExprCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *firstWordPtr;
 
-    DefineLineInformation;
-
     if (parsePtr->numWords == 1) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"expr arg ?arg ...?\"", -1);
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
-    SetLineInformation (1);
-    firstWordPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
-    return TclCompileExprWords(interp, firstWordPtr, (parsePtr->numWords-1),
-	    envPtr);
+    /*
+     * TIP #280: Use the per-word line information of the current command.
+     */
+
+    envPtr->line = envPtr->extCmdMapPtr->loc[
+	    envPtr->extCmdMapPtr->nuloc-1].line[1];
+
+    firstWordPtr = TokenAfter(parsePtr->tokenPtr);
+    TclCompileExprWords(interp, firstWordPtr, parsePtr->numWords-1, envPtr);
+    return TCL_OK;
 }
 
 /*
@@ -516,36 +1432,33 @@ TclCompileExprCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "for" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK unless
- *	there was an error while parsing string. If an error occurs then
- *	the interpreter's result contains a standard error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "for" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "for" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclCompileForCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileForCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *startTokenPtr, *testTokenPtr, *nextTokenPtr, *bodyTokenPtr;
     JumpFixup jumpEvalCondFixup;
     int testCodeOffset, bodyCodeOffset, nextCodeOffset, jumpDist;
-    int bodyRange, nextRange, code;
-    char buffer[32 + TCL_INTEGER_SPACE];
+    int bodyRange, nextRange;
     int savedStackDepth = envPtr->currStackDepth;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     if (parsePtr->numWords != 5) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"for start test next command\"", -1);
 	return TCL_ERROR;
     }
 
@@ -555,11 +1468,10 @@ TclCompileForCmd(interp, parsePtr, envPtr)
      * execute or execute forever, as in "for {} "$x > 5" {incr x} {}".
      */
 
-    startTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
-    testTokenPtr = startTokenPtr + (startTokenPtr->numComponents + 1);
+    startTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    testTokenPtr = TokenAfter(startTokenPtr);
     if (testTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     /*
@@ -567,23 +1479,20 @@ TclCompileForCmd(interp, parsePtr, envPtr)
      * in order to insure correct behaviour [Bug 219166]
      */
 
-    nextTokenPtr = testTokenPtr + (testTokenPtr->numComponents + 1);
-    bodyTokenPtr = nextTokenPtr + (nextTokenPtr->numComponents + 1);
-    if ((nextTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) 
+    nextTokenPtr = TokenAfter(testTokenPtr);
+    bodyTokenPtr = TokenAfter(nextTokenPtr);
+    if ((nextTokenPtr->type != TCL_TOKEN_SIMPLE_WORD)
 	    || (bodyTokenPtr->type != TCL_TOKEN_SIMPLE_WORD)) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     /*
-     * Create ExceptionRange records for the body and the "next" command.
-     * The "next" command's ExceptionRange supports break but not continue
-     * (and has a -1 continueOffset).
+     * Create ExceptionRange records for the body and the "next" command. The
+     * "next" command's ExceptionRange supports break but not continue (and
+     * has a -1 continueOffset).
      */
 
-    envPtr->exceptDepth++;
-    envPtr->maxExceptDepth =
-	    TclMax(envPtr->exceptDepth, envPtr->maxExceptDepth);
-    bodyRange = TclCreateExceptRange(LOOP_EXCEPTION_RANGE, envPtr);
+    bodyRange = DeclareExceptionRange(envPtr, LOOP_EXCEPTION_RANGE);
     nextRange = TclCreateExceptRange(LOOP_EXCEPTION_RANGE, envPtr);
 
     /*
@@ -591,17 +1500,9 @@ TclCompileForCmd(interp, parsePtr, envPtr)
      */
 
     SetLineInformation (1);
-    code = TclCompileCmdWord(interp, startTokenPtr+1,
-	    startTokenPtr->numComponents, envPtr);
-    if (code != TCL_OK) {
-	if (code == TCL_ERROR) {
-            Tcl_AddObjErrorInfo(interp,
-	            "\n    (\"for\" initial command)", -1);
-        }
-	goto done;
-    }
+    CompileBody(envPtr, startTokenPtr, interp);
     TclEmitOpcode(INST_POP, envPtr);
-   
+
     /*
      * Jump to the evaluation of the condition. This code uses the "loop
      * rotation" optimisation (which eliminates one branch from the loop).
@@ -620,46 +1521,23 @@ TclCompileForCmd(interp, parsePtr, envPtr)
      * Compile the loop body.
      */
 
-    bodyCodeOffset = (envPtr->codeNext - envPtr->codeStart);
-
+    bodyCodeOffset = ExceptionRangeStarts(envPtr, bodyRange);
     SetLineInformation (4);
-    code = TclCompileCmdWord(interp, bodyTokenPtr+1,
-	    bodyTokenPtr->numComponents, envPtr);
+    CompileBody(envPtr, bodyTokenPtr, interp);
+    ExceptionRangeEnds(envPtr, bodyRange);
     envPtr->currStackDepth = savedStackDepth + 1;
-    if (code != TCL_OK) {
-	if (code == TCL_ERROR) {
-	    sprintf(buffer, "\n    (\"for\" body line %d)",
-		    interp->errorLine);
-            Tcl_AddObjErrorInfo(interp, buffer, -1);
-        }
-	goto done;
-    }
-    envPtr->exceptArrayPtr[bodyRange].numCodeBytes =
-	    (envPtr->codeNext - envPtr->codeStart) - bodyCodeOffset;
     TclEmitOpcode(INST_POP, envPtr);
 
-
     /*
      * Compile the "next" subcommand.
      */
 
-    nextCodeOffset = (envPtr->codeNext - envPtr->codeStart);
-
-    SetLineInformation (3);
     envPtr->currStackDepth = savedStackDepth;
-    code = TclCompileCmdWord(interp, nextTokenPtr+1,
-	    nextTokenPtr->numComponents, envPtr);
+    nextCodeOffset = ExceptionRangeStarts(envPtr, nextRange);
+    SetLineInformation (3);
+    CompileBody(envPtr, nextTokenPtr, interp);
+    ExceptionRangeEnds(envPtr, nextRange);
     envPtr->currStackDepth = savedStackDepth + 1;
-    if (code != TCL_OK) {
-	if (code == TCL_ERROR) {
-	    Tcl_AddObjErrorInfo(interp,
-	            "\n    (\"for\" loop-end command)", -1);
-	}
-	goto done;
-    }
-    envPtr->exceptArrayPtr[nextRange].numCodeBytes =
-	    (envPtr->codeNext - envPtr->codeStart)
-	    - nextCodeOffset;
     TclEmitOpcode(INST_POP, envPtr);
     envPtr->currStackDepth = savedStackDepth;
 
@@ -668,7 +1546,7 @@ TclCompileForCmd(interp, parsePtr, envPtr)
      * terminates the for.
      */
 
-    testCodeOffset = (envPtr->codeNext - envPtr->codeStart);
+    testCodeOffset = CurrentOffset(envPtr);
 
     jumpDist = testCodeOffset - jumpEvalCondFixup.codeOffset;
     if (TclFixupForwardJump(envPtr, &jumpEvalCondFixup, jumpDist, 127)) {
@@ -676,27 +1554,22 @@ TclCompileForCmd(interp, parsePtr, envPtr)
 	nextCodeOffset += 3;
 	testCodeOffset += 3;
     }
+
     SetLineInformation (2);
     envPtr->currStackDepth = savedStackDepth;
-    code = TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
-    if (code != TCL_OK) {
-	if (code == TCL_ERROR) {
-	    Tcl_AddObjErrorInfo(interp,
-				"\n    (\"for\" test expression)", -1);
-	}
-	goto done;
-    }
+    TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
     envPtr->currStackDepth = savedStackDepth + 1;
-    
-    jumpDist = (envPtr->codeNext - envPtr->codeStart) - bodyCodeOffset;
+
+    jumpDist = CurrentOffset(envPtr) - bodyCodeOffset;
     if (jumpDist > 127) {
 	TclEmitInstInt4(INST_JUMP_TRUE4, -jumpDist, envPtr);
     } else {
 	TclEmitInstInt1(INST_JUMP_TRUE1, -jumpDist, envPtr);
     }
-    
+
     /*
-     * Set the loop's offsets and break target.
+     * Fix the starting points of the exception ranges (may have moved due to
+     * jump type modification) and set where the exceptions target.
      */
 
     envPtr->exceptArrayPtr[bodyRange].codeOffset = bodyCodeOffset;
@@ -704,21 +1577,17 @@ TclCompileForCmd(interp, parsePtr, envPtr)
 
     envPtr->exceptArrayPtr[nextRange].codeOffset = nextCodeOffset;
 
-    envPtr->exceptArrayPtr[bodyRange].breakOffset =
-            envPtr->exceptArrayPtr[nextRange].breakOffset =
-	    (envPtr->codeNext - envPtr->codeStart);
-    
+    ExceptionRangeTarget(envPtr, bodyRange, breakOffset);
+    ExceptionRangeTarget(envPtr, nextRange, breakOffset);
+
     /*
      * The for command's result is an empty string.
      */
 
     envPtr->currStackDepth = savedStackDepth;
-    TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
-    code = TCL_OK;
+    PushLiteral(envPtr, "", 0);
 
-    done:
-    envPtr->exceptDepth--;
-    return code;
+    return TCL_OK;
 }
 
 /*
@@ -729,27 +1598,24 @@ TclCompileForCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "foreach" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	compilation was successful. If an error occurs then the
- *	interpreter's result contains a standard error message and TCL_ERROR
- *	is returned. If the command is too complex for TclCompileForeachCmd,
- *	TCL_OUT_LINE_COMPILE is returned indicating that the foreach command
- *	should be compiled "out of line" by emitting code to invoke its
- *	command procedure at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "foreach" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "foreach" command at
+ *	runtime.
  *
-n*----------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
 int
-TclCompileForeachCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileForeachCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Proc *procPtr = envPtr->procPtr;
     ForeachInfo *infoPtr;	/* Points to the structure describing this
@@ -762,28 +1628,19 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
     Tcl_Token *tokenPtr, *bodyTokenPtr;
     unsigned char *jumpPc;
     JumpFixup jumpFalseFixup;
-    int jumpDist, jumpBackDist, jumpBackOffset, infoIndex, range;
+    int jumpBackDist, jumpBackOffset, infoIndex, range, bodyIndex;
     int numWords, numLists, numVars, loopIndex, tempVar, i, j, code;
-    char buffer[32 + TCL_INTEGER_SPACE];
     int savedStackDepth = envPtr->currStackDepth;
-
-#ifdef TCL_TIP280
-    int        bodyIndex;
-#endif
+    DefineLineInformation;	/* TIP #280 */
 
     /*
      * We parse the variable list argument words and create two arrays:
-     *    varcList[i] is number of variables in i-th var list
-     *    varvList[i] points to array of var names in i-th var list
+     *    varcList[i] is number of variables in i-th var list.
+     *    varvList[i] points to array of var names in i-th var list.
      */
 
-#define STATIC_VAR_LIST_SIZE 5
-    int varcListStaticSpace[STATIC_VAR_LIST_SIZE];
-    CONST char **varvListStaticSpace[STATIC_VAR_LIST_SIZE];
-    int *varcList = varcListStaticSpace;
-    CONST char ***varvList = varvListStaticSpace;
-
-    DefineLineInformation;
+    int *varcList;
+    const char ***varvList;
 
     /*
      * If the foreach command isn't in a procedure, don't compile it inline:
@@ -791,129 +1648,120 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
      */
 
     if (procPtr == NULL) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     numWords = parsePtr->numWords;
     if ((numWords < 4) || (numWords%2 != 0)) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"foreach varList list ?varList list ...? command\"", -1);
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
-     * Bail out if the body requires substitutions
-     * in order to insure correct behaviour [Bug 219166]
+     * Bail out if the body requires substitutions in order to insure correct
+     * behaviour. [Bug 219166]
      */
-    for (i = 0, tokenPtr = parsePtr->tokenPtr;
-	    i < numWords-1;
-	    i++, tokenPtr += (tokenPtr->numComponents + 1)) {
+
+    for (i = 0, tokenPtr = parsePtr->tokenPtr; i < numWords-1; i++) {
+	tokenPtr = TokenAfter(tokenPtr);
     }
     bodyTokenPtr = tokenPtr;
     if (bodyTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
-#ifdef TCL_TIP280
+
     bodyIndex = i-1;
-#endif
 
     /*
      * Allocate storage for the varcList and varvList arrays if necessary.
      */
 
     numLists = (numWords - 2)/2;
-    if (numLists > STATIC_VAR_LIST_SIZE) {
-        varcList = (int *) ckalloc(numLists * sizeof(int));
-        varvList = (CONST char ***) ckalloc(numLists * sizeof(CONST char **));
-    }
-    for (loopIndex = 0;  loopIndex < numLists;  loopIndex++) {
-        varcList[loopIndex] = 0;
-        varvList[loopIndex] = NULL;
-    }
-    
-    /*
-     * Set the exception stack depth.
-     */ 
-
-    envPtr->exceptDepth++;
-    envPtr->maxExceptDepth =
-	TclMax(envPtr->exceptDepth, envPtr->maxExceptDepth);
+    varcList = (int *) TclStackAlloc(interp, numLists * sizeof(int));
+    memset(varcList, 0, numLists * sizeof(int));
+    varvList = (const char ***) TclStackAlloc(interp,
+	    numLists * sizeof(const char **));
+    memset((char*) varvList, 0, numLists * sizeof(const char **));
 
     /*
-     * Break up each var list and set the varcList and varvList arrays.
-     * Don't compile the foreach inline if any var name needs substitutions
-     * or isn't a scalar, or if any var list needs substitutions.
+     * Break up each var list and set the varcList and varvList arrays. Don't
+     * compile the foreach inline if any var name needs substitutions or isn't
+     * a scalar, or if any var list needs substitutions.
      */
 
     loopIndex = 0;
     for (i = 0, tokenPtr = parsePtr->tokenPtr;
 	    i < numWords-1;
-	    i++, tokenPtr += (tokenPtr->numComponents + 1)) {
-	if (i%2 == 1) {
-	    if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-		code = TCL_OUT_LINE_COMPILE;
-		goto done;
-	    } else {
-		/* Lots of copying going on here.  Need a ListObj wizard
-		 * to show a better way. */
-
-		Tcl_DString varList;
-
-		Tcl_DStringInit(&varList);
-		Tcl_DStringAppend(&varList, tokenPtr[1].start,
-			tokenPtr[1].size);
-		code = Tcl_SplitList(interp, Tcl_DStringValue(&varList),
-			&varcList[loopIndex], &varvList[loopIndex]);
-		Tcl_DStringFree(&varList);
-		if (code != TCL_OK) {
-		    goto done;
-		}
-		numVars = varcList[loopIndex];
+	    i++, tokenPtr = TokenAfter(tokenPtr)) {
+	Tcl_DString varList;
 
-		/*
-		 * If the variable list is empty, we can enter an infinite
-		 * loop when the interpreted version would not. Take care to
-		 * ensure this does not happen. [Bug 1671138]
-		 */
+	if (i%2 != 1) {
+	    continue;
+	}
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    code = TCL_ERROR;
+	    goto done;
+	}
 
-		if (numVars == 0) {
-		    code = TCL_OUT_LINE_COMPILE;
-		    goto done;
-		}
+	/*
+	 * Lots of copying going on here. Need a ListObj wizard to show a
+	 * better way.
+	 */
 
-		for (j = 0;  j < numVars;  j++) {
-		    CONST char *varName = varvList[loopIndex][j];
-		    if (!TclIsLocalScalar(varName, (int) strlen(varName))) {
-			code = TCL_OUT_LINE_COMPILE;
-			goto done;
-		    }
-		}
+	Tcl_DStringInit(&varList);
+	Tcl_DStringAppend(&varList, tokenPtr[1].start, tokenPtr[1].size);
+	code = Tcl_SplitList(interp, Tcl_DStringValue(&varList),
+		&varcList[loopIndex], &varvList[loopIndex]);
+	Tcl_DStringFree(&varList);
+	if (code != TCL_OK) {
+	    code = TCL_ERROR;
+	    goto done;
+	}
+	numVars = varcList[loopIndex];
+
+	/*
+	 * If the variable list is empty, we can enter an infinite loop when
+	 * the interpreted version would not. Take care to ensure this does
+	 * not happen. [Bug 1671138]
+	 */
+
+	if (numVars == 0) {
+	    code = TCL_ERROR;
+	    goto done;
+	}
+
+	for (j = 0;  j < numVars;  j++) {
+	    const char *varName = varvList[loopIndex][j];
+
+	    if (!TclIsLocalScalar(varName, (int) strlen(varName))) {
+		code = TCL_ERROR;
+		goto done;
 	    }
-	    loopIndex++;
 	}
+	loopIndex++;
     }
 
     /*
-     * We will compile the foreach command.
-     * Reserve (numLists + 1) temporary variables:
+     * We will compile the foreach command. Reserve (numLists + 1) temporary
+     * variables:
      *    - numLists temps to hold each value list
      *    - 1 temp for the loop counter (index of next element in each list)
+     *
      * At this time we don't try to reuse temporaries; if there are two
      * nonoverlapping foreach loops, they don't share any temps.
      */
 
+    code = TCL_OK;
     firstValueTemp = -1;
     for (loopIndex = 0;  loopIndex < numLists;  loopIndex++) {
 	tempVar = TclFindCompiledLocal(NULL, /*nameChars*/ 0,
-		/*create*/ 1, /*flags*/ VAR_SCALAR, procPtr);
+		/*create*/ 1, procPtr);
 	if (loopIndex == 0) {
 	    firstValueTemp = tempVar;
 	}
     }
     loopCtTemp = TclFindCompiledLocal(NULL, /*nameChars*/ 0,
-	    /*create*/ 1, /*flags*/ VAR_SCALAR, procPtr);
-    
+	    /*create*/ 1, procPtr);
+
     /*
      * Create and initialize the ForeachInfo and ForeachVarList data
      * structures describing this command. Then create a AuxData record
@@ -921,7 +1769,7 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
      */
 
     infoPtr = (ForeachInfo *) ckalloc((unsigned)
-	    (sizeof(ForeachInfo) + (numLists * sizeof(ForeachVarList *))));
+	    sizeof(ForeachInfo) + numLists*sizeof(ForeachVarList *));
     infoPtr->numLists = numLists;
     infoPtr->firstValueTemp = firstValueTemp;
     infoPtr->loopCtTemp = loopCtTemp;
@@ -929,36 +1777,36 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
 	ForeachVarList *varListPtr;
 	numVars = varcList[loopIndex];
 	varListPtr = (ForeachVarList *) ckalloc((unsigned)
-	        sizeof(ForeachVarList) + (numVars * sizeof(int)));
+		sizeof(ForeachVarList) + numVars*sizeof(int));
 	varListPtr->numVars = numVars;
 	for (j = 0;  j < numVars;  j++) {
-	    CONST char *varName = varvList[loopIndex][j];
+	    const char *varName = varvList[loopIndex][j];
 	    int nameChars = strlen(varName);
+
 	    varListPtr->varIndexes[j] = TclFindCompiledLocal(varName,
-		    nameChars, /*create*/ 1, /*flags*/ VAR_SCALAR, procPtr);
+		    nameChars, /*create*/ 1, procPtr);
 	}
 	infoPtr->varLists[loopIndex] = varListPtr;
     }
-    infoIndex = TclCreateAuxData((ClientData) infoPtr, &tclForeachInfoType, envPtr);
+    infoIndex = TclCreateAuxData(infoPtr, &tclForeachInfoType, envPtr);
+
+    /*
+     * Create an exception record to handle [break] and [continue].
+     */
+
+    range = DeclareExceptionRange(envPtr, LOOP_EXCEPTION_RANGE);
 
     /*
      * Evaluate then store each value list in the associated temporary.
      */
 
-    range = TclCreateExceptRange(LOOP_EXCEPTION_RANGE, envPtr);
-    
     loopIndex = 0;
     for (i = 0, tokenPtr = parsePtr->tokenPtr;
 	    i < numWords-1;
-	    i++, tokenPtr += (tokenPtr->numComponents + 1)) {
+	    i++, tokenPtr = TokenAfter(tokenPtr)) {
 	if ((i%2 == 0) && (i > 0)) {
 	    SetLineInformation (i);
-	    code = TclCompileTokens(interp, tokenPtr+1,
-		    tokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
-
+	    CompileTokens(envPtr, tokenPtr, interp);
 	    tempVar = (firstValueTemp + loopIndex);
 	    if (tempVar <= 255) {
 		TclEmitInstInt1(INST_STORE_SCALAR1, tempVar, envPtr);
@@ -975,50 +1823,36 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
      */
 
     TclEmitInstInt4(INST_FOREACH_START4, infoIndex, envPtr);
-    
+
     /*
      * Top of loop code: assign each loop variable and check whether
      * to terminate the loop.
      */
 
-    envPtr->exceptArrayPtr[range].continueOffset =
-	    (envPtr->codeNext - envPtr->codeStart);
+    ExceptionRangeTarget(envPtr, range, continueOffset);
     TclEmitInstInt4(INST_FOREACH_STEP4, infoIndex, envPtr);
     TclEmitForwardJump(envPtr, TCL_FALSE_JUMP, &jumpFalseFixup);
-    
+
     /*
      * Inline compile the loop body.
      */
 
     SetLineInformation (bodyIndex);
-    envPtr->exceptArrayPtr[range].codeOffset =
-	    (envPtr->codeNext - envPtr->codeStart);
-    code = TclCompileCmdWord(interp, bodyTokenPtr+1,
-	    bodyTokenPtr->numComponents, envPtr);
+    ExceptionRangeStarts(envPtr, range);
+    CompileBody(envPtr, bodyTokenPtr, interp);
+    ExceptionRangeEnds(envPtr, range);
     envPtr->currStackDepth = savedStackDepth + 1;
-    if (code != TCL_OK) {
-	if (code == TCL_ERROR) {
-	    sprintf(buffer, "\n    (\"foreach\" body line %d)",
-		    interp->errorLine);
-            Tcl_AddObjErrorInfo(interp, buffer, -1);
-        }
-	goto done;
-    }
-    envPtr->exceptArrayPtr[range].numCodeBytes =
-	    (envPtr->codeNext - envPtr->codeStart)
-	    - envPtr->exceptArrayPtr[range].codeOffset;
     TclEmitOpcode(INST_POP, envPtr);
-	
+
     /*
-     * Jump back to the test at the top of the loop. Generate a 4 byte jump
-     * if the distance to the test is > 120 bytes. This is conservative and
+     * Jump back to the test at the top of the loop. Generate a 4 byte jump if
+     * the distance to the test is > 120 bytes. This is conservative and
      * ensures that we won't have to replace this jump if we later need to
      * replace the ifFalse jump with a 4 byte jump.
      */
 
-    jumpBackOffset = (envPtr->codeNext - envPtr->codeStart);
-    jumpBackDist =
-	(jumpBackOffset - envPtr->exceptArrayPtr[range].continueOffset);
+    jumpBackOffset = CurrentOffset(envPtr);
+    jumpBackDist = jumpBackOffset-envPtr->exceptArrayPtr[range].continueOffset;
     if (jumpBackDist > 120) {
 	TclEmitInstInt4(INST_JUMP4, -jumpBackDist, envPtr);
     } else {
@@ -1029,9 +1863,7 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
      * Fix the target of the jump after the foreach_step test.
      */
 
-    jumpDist = (envPtr->codeNext - envPtr->codeStart)
-	    - jumpFalseFixup.codeOffset;
-    if (TclFixupForwardJump(envPtr, &jumpFalseFixup, jumpDist, 127)) {
+    if (TclFixupForwardJumpToHere(envPtr, &jumpFalseFixup, 127)) {
 	/*
 	 * Update the loop body's starting PC offset since it moved down.
 	 */
@@ -1057,28 +1889,24 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
      * Set the loop's break target.
      */
 
-    envPtr->exceptArrayPtr[range].breakOffset =
-	    (envPtr->codeNext - envPtr->codeStart);
-    
+    ExceptionRangeTarget(envPtr, range, breakOffset);
+
     /*
      * The foreach command's result is an empty string.
      */
 
     envPtr->currStackDepth = savedStackDepth;
-    TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
+    PushLiteral(envPtr, "", 0);
     envPtr->currStackDepth = savedStackDepth + 1;
 
-    done:
+  done:
     for (loopIndex = 0;  loopIndex < numLists;  loopIndex++) {
-	if (varvList[loopIndex] != (CONST char **) NULL) {
+	if (varvList[loopIndex] != NULL) {
 	    ckfree((char *) varvList[loopIndex]);
 	}
     }
-    if (varcList != varcListStaticSpace) {
-	ckfree((char *) varcList);
-        ckfree((char *) varvList);
-    }
-    envPtr->exceptDepth--;
+    TclStackFree(interp, (void *)varvList);
+    TclStackFree(interp, varcList);
     return code;
 }
 
@@ -1087,8 +1915,8 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
  *
  * DupForeachInfo --
  *
- *	This procedure duplicates a ForeachInfo structure created as
- *	auxiliary data during the compilation of a foreach command.
+ *	This procedure duplicates a ForeachInfo structure created as auxiliary
+ *	data during the compilation of a foreach command.
  *
  * Results:
  *	A pointer to a newly allocated copy of the existing ForeachInfo
@@ -1096,42 +1924,41 @@ TclCompileForeachCmd(interp, parsePtr, envPtr)
  *
  * Side effects:
  *	Storage for the copied ForeachInfo record is allocated. If the
- *	original ForeachInfo structure pointed to any ForeachVarList
- *	records, these structures are also copied and pointers to them
- *	are stored in the new ForeachInfo record.
+ *	original ForeachInfo structure pointed to any ForeachVarList records,
+ *	these structures are also copied and pointers to them are stored in
+ *	the new ForeachInfo record.
  *
  *----------------------------------------------------------------------
  */
 
 static ClientData
-DupForeachInfo(clientData)
-    ClientData clientData;	/* The foreach command's compilation
-				 * auxiliary data to duplicate. */
+DupForeachInfo(
+    ClientData clientData)	/* The foreach command's compilation auxiliary
+				 * data to duplicate. */
 {
-    register ForeachInfo *srcPtr = (ForeachInfo *) clientData;
+    register ForeachInfo *srcPtr = clientData;
     ForeachInfo *dupPtr;
     register ForeachVarList *srcListPtr, *dupListPtr;
-    int numLists = srcPtr->numLists;
-    int numVars, i, j;
-    
+    int numVars, i, j, numLists = srcPtr->numLists;
+
     dupPtr = (ForeachInfo *) ckalloc((unsigned)
-	    (sizeof(ForeachInfo) + (numLists * sizeof(ForeachVarList *))));
+	    sizeof(ForeachInfo) + numLists*sizeof(ForeachVarList *));
     dupPtr->numLists = numLists;
     dupPtr->firstValueTemp = srcPtr->firstValueTemp;
     dupPtr->loopCtTemp = srcPtr->loopCtTemp;
-    
+
     for (i = 0;  i < numLists;  i++) {
 	srcListPtr = srcPtr->varLists[i];
 	numVars = srcListPtr->numVars;
 	dupListPtr = (ForeachVarList *) ckalloc((unsigned)
-	        sizeof(ForeachVarList) + numVars*sizeof(int));
+		sizeof(ForeachVarList) + numVars*sizeof(int));
 	dupListPtr->numVars = numVars;
 	for (j = 0;  j < numVars;  j++) {
 	    dupListPtr->varIndexes[j] =	srcListPtr->varIndexes[j];
 	}
 	dupPtr->varLists[i] = dupListPtr;
     }
-    return (ClientData) dupPtr;
+    return dupPtr;
 }
 
 /*
@@ -1154,11 +1981,11 @@ DupForeachInfo(clientData)
  */
 
 static void
-FreeForeachInfo(clientData)
-    ClientData clientData;	/* The foreach command's compilation
-				 * auxiliary data to free. */
+FreeForeachInfo(
+    ClientData clientData)	/* The foreach command's compilation auxiliary
+				 * data to free. */
 {
-    register ForeachInfo *infoPtr = (ForeachInfo *) clientData;
+    register ForeachInfo *infoPtr = clientData;
     register ForeachVarList *listPtr;
     int numLists = infoPtr->numLists;
     register int i;
@@ -1173,58 +2000,111 @@ FreeForeachInfo(clientData)
 /*
  *----------------------------------------------------------------------
  *
+ * PrintForeachInfo --
+ *
+ *	Function to write a human-readable representation of a ForeachInfo
+ *	structure to stdout for debugging.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+PrintForeachInfo(
+    ClientData clientData,
+    Tcl_Obj *appendObj,
+    ByteCode *codePtr,
+    unsigned int pcOffset)
+{
+    register ForeachInfo *infoPtr = clientData;
+    register ForeachVarList *varsPtr;
+    int i, j;
+
+    Tcl_AppendToObj(appendObj, "data=[", -1);
+
+    for (i=0 ; i<infoPtr->numLists ; i++) {
+	if (i) {
+	    Tcl_AppendToObj(appendObj, ", ", -1);
+	}
+	Tcl_AppendPrintfToObj(appendObj, "%%v%u",
+		(unsigned) (infoPtr->firstValueTemp + i));
+    }
+    Tcl_AppendPrintfToObj(appendObj, "], loop=%%v%u",
+	    (unsigned) infoPtr->loopCtTemp);
+    for (i=0 ; i<infoPtr->numLists ; i++) {
+	if (i) {
+	    Tcl_AppendToObj(appendObj, ",", -1);
+	}
+	Tcl_AppendPrintfToObj(appendObj, "\n\t\t it%%v%u\t[",
+		(unsigned) (infoPtr->firstValueTemp + i));
+	varsPtr = infoPtr->varLists[i];
+	for (j=0 ; j<varsPtr->numVars ; j++) {
+	    if (j) {
+		Tcl_AppendToObj(appendObj, ", ", -1);
+	    }
+	    Tcl_AppendPrintfToObj(appendObj, "%%v%u",
+		    (unsigned) varsPtr->varIndexes[j]);
+	}
+	Tcl_AppendToObj(appendObj, "]", -1);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TclCompileIfCmd --
  *
  *	Procedure called to compile the "if" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	compilation was successful. If an error occurs then the
- *	interpreter's result contains a standard error message and TCL_ERROR
- *	is returned. If the command is too complex for TclCompileIfCmd,
- *	TCL_OUT_LINE_COMPILE is returned indicating that the if command
- *	should be compiled "out of line" by emitting code to invoke its
- *	command procedure at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "if" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "if" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclCompileIfCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileIfCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     JumpFixupArray jumpFalseFixupArray;
     				/* Used to fix the ifFalse jump after each
 				 * test when its target PC is determined. */
     JumpFixupArray jumpEndFixupArray;
-				/* Used to fix the jump after each "then"
-				 * body to the end of the "if" when that PC
-				 * is determined. */
+				/* Used to fix the jump after each "then" body
+				 * to the end of the "if" when that PC is
+				 * determined. */
     Tcl_Token *tokenPtr, *testTokenPtr;
-    int jumpDist, jumpFalseDist;
-    int jumpIndex = 0;          /* avoid compiler warning. */
-    int numWords, wordIdx, numBytes, j, code;
-    CONST char *word;
-    char buffer[100];
+    int jumpIndex = 0;		/* Avoid compiler warning. */
+    int jumpFalseDist, numWords, wordIdx, numBytes, j, code;
+    const char *word;
     int savedStackDepth = envPtr->currStackDepth;
-                                /* Saved stack depth at the start of the first
+				/* Saved stack depth at the start of the first
 				 * test; the envPtr current depth is restored
 				 * to this value at the start of each test. */
-    int realCond = 1;           /* set to 0 for static conditions: "if 0 {..}" */
-    int boolVal;                /* value of static condition */
-    int compileScripts = 1;            
-
-    DefineLineInformation;
+    int realCond = 1;		/* Set to 0 for static conditions:
+				 * "if 0 {..}" */
+    int boolVal;		/* Value of static condition. */
+    int compileScripts = 1;
+    DefineLineInformation;	/* TIP #280 */
 
     /*
-     * Only compile the "if" command if all arguments are simple
-     * words, in order to insure correct substitution [Bug 219166]
+     * Only compile the "if" command if all arguments are simple words, in
+     * order to insure correct substitution [Bug 219166]
      */
 
     tokenPtr = parsePtr->tokenPtr;
@@ -1233,19 +2113,18 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 
     for (wordIdx = 0; wordIdx < numWords; wordIdx++) {
 	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-	    return TCL_OUT_LINE_COMPILE;
+	    return TCL_ERROR;
 	}
-	tokenPtr += 2;
+	tokenPtr = TokenAfter(tokenPtr);
     }
 
-
     TclInitJumpFixupArray(&jumpFalseFixupArray);
     TclInitJumpFixupArray(&jumpEndFixupArray);
     code = TCL_OK;
 
     /*
-     * Each iteration of this loop compiles one "if expr ?then? body"
-     * or "elseif expr ?then? body" clause. 
+     * Each iteration of this loop compiles one "if expr ?then? body" or
+     * "elseif expr ?then? body" clause.
      */
 
     tokenPtr = parsePtr->tokenPtr;
@@ -1258,84 +2137,66 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 	word = tokenPtr[1].start;
 	numBytes = tokenPtr[1].size;
 	if ((tokenPtr == parsePtr->tokenPtr)
-	        || ((numBytes == 6) && (strncmp(word, "elseif", 6) == 0))) {
-	    tokenPtr += (tokenPtr->numComponents + 1);
+		|| ((numBytes == 6) && (strncmp(word, "elseif", 6) == 0))) {
+	    tokenPtr = TokenAfter(tokenPtr);
 	    wordIdx++;
 	} else {
 	    break;
 	}
 	if (wordIdx >= numWords) {
-	    sprintf(buffer,
-	            "wrong # args: no expression after \"%.*s\" argument",
-		    (numBytes > 50 ? 50 : numBytes), word);
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), buffer, -1);
 	    code = TCL_ERROR;
 	    goto done;
 	}
 
 	/*
-	 * Compile the test expression then emit the conditional jump
-	 * around the "then" part. 
+	 * Compile the test expression then emit the conditional jump around
+	 * the "then" part.
 	 */
-	
+
 	envPtr->currStackDepth = savedStackDepth;
 	testTokenPtr = tokenPtr;
 
-
 	if (realCond) {
 	    /*
-	     * Find out if the condition is a constant. 
+	     * Find out if the condition is a constant.
 	     */
-	
+
 	    Tcl_Obj *boolObj = Tcl_NewStringObj(testTokenPtr[1].start,
 		    testTokenPtr[1].size);
 	    Tcl_IncrRefCount(boolObj);
 	    code = Tcl_GetBooleanFromObj(NULL, boolObj, &boolVal);
-	    Tcl_DecrRefCount(boolObj);
+	    TclDecrRefCount(boolObj);
 	    if (code == TCL_OK) {
 		/*
-		 * A static condition
+		 * A static condition.
 		 */
+
 		realCond = 0;
 		if (!boolVal) {
 		    compileScripts = 0;
 		}
 	    } else {
-		Tcl_ResetResult(interp);
 		SetLineInformation (wordIdx);
-		code = TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
-		if (code != TCL_OK) {
-		    if (code == TCL_ERROR) {
-			Tcl_AddObjErrorInfo(interp,
-			        "\n    (\"if\" test expression)", -1);
-		    }
-		    goto done;
-		}
+		Tcl_ResetResult(interp);
+		TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
 		if (jumpFalseFixupArray.next >= jumpFalseFixupArray.end) {
 		    TclExpandJumpFixupArray(&jumpFalseFixupArray);
 		}
 		jumpIndex = jumpFalseFixupArray.next;
 		jumpFalseFixupArray.next++;
 		TclEmitForwardJump(envPtr, TCL_FALSE_JUMP,
-			       &(jumpFalseFixupArray.fixup[jumpIndex]));	    
+			jumpFalseFixupArray.fixup+jumpIndex);
 	    }
+	    code = TCL_OK;
 	}
 
-
 	/*
 	 * Skip over the optional "then" before the then clause.
 	 */
 
-	tokenPtr = testTokenPtr + (testTokenPtr->numComponents + 1);
+	tokenPtr = TokenAfter(testTokenPtr);
 	wordIdx++;
 	if (wordIdx >= numWords) {
-	    sprintf(buffer,
-		    "wrong # args: no script following \"%.*s\" argument",
-		    (testTokenPtr->size > 50 ? 50 : testTokenPtr->size),
-		    testTokenPtr->start);
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), buffer, -1);
 	    code = TCL_ERROR;
 	    goto done;
 	}
@@ -1343,12 +2204,9 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 	    word = tokenPtr[1].start;
 	    numBytes = tokenPtr[1].size;
 	    if ((numBytes == 4) && (strncmp(word, "then", 4) == 0)) {
-		tokenPtr += (tokenPtr->numComponents + 1);
+		tokenPtr = TokenAfter(tokenPtr);
 		wordIdx++;
 		if (wordIdx >= numWords) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		            "wrong # args: no script following \"then\" argument", -1);
 		    code = TCL_ERROR;
 		    goto done;
 		}
@@ -1362,85 +2220,72 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 	if (compileScripts) {
 	    SetLineInformation (wordIdx);
 	    envPtr->currStackDepth = savedStackDepth;
-	    code = TclCompileCmdWord(interp, tokenPtr+1,
-	            tokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		if (code == TCL_ERROR) {
-		    sprintf(buffer, "\n    (\"if\" then script line %d)",
-		            interp->errorLine);
-		    Tcl_AddObjErrorInfo(interp, buffer, -1);
-		}
-		goto done;
-	    }	
+	    CompileBody(envPtr, tokenPtr, interp);
 	}
 
 	if (realCond) {
 	    /*
-	     * Jump to the end of the "if" command. Both jumpFalseFixupArray and
-	     * jumpEndFixupArray are indexed by "jumpIndex".
+	     * Jump to the end of the "if" command. Both jumpFalseFixupArray
+	     * and jumpEndFixupArray are indexed by "jumpIndex".
 	     */
-	    
+
 	    if (jumpEndFixupArray.next >= jumpEndFixupArray.end) {
 		TclExpandJumpFixupArray(&jumpEndFixupArray);
 	    }
 	    jumpEndFixupArray.next++;
 	    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP,
-	            &(jumpEndFixupArray.fixup[jumpIndex]));
-	    
+		    jumpEndFixupArray.fixup+jumpIndex);
+
 	    /*
-	     * Fix the target of the jumpFalse after the test. Generate a 4 byte
-	     * jump if the distance is > 120 bytes. This is conservative, and
-	     * ensures that we won't have to replace this jump if we later also
-	     * need to replace the proceeding jump to the end of the "if" with a
-	     * 4 byte jump.
+	     * Fix the target of the jumpFalse after the test. Generate a 4
+	     * byte jump if the distance is > 120 bytes. This is conservative,
+	     * and ensures that we won't have to replace this jump if we later
+	     * also need to replace the proceeding jump to the end of the "if"
+	     * with a 4 byte jump.
 	     */
 
-	    jumpDist = (envPtr->codeNext - envPtr->codeStart)
-	            - jumpFalseFixupArray.fixup[jumpIndex].codeOffset;
-	    if (TclFixupForwardJump(envPtr,
-	            &(jumpFalseFixupArray.fixup[jumpIndex]), jumpDist, 120)) {
+	    if (TclFixupForwardJumpToHere(envPtr,
+		    jumpFalseFixupArray.fixup+jumpIndex, 120)) {
 		/*
 		 * Adjust the code offset for the proceeding jump to the end
 		 * of the "if" command.
 		 */
-		
+
 		jumpEndFixupArray.fixup[jumpIndex].codeOffset += 3;
 	    }
 	} else if (boolVal) {
-	    /* 
-	     *We were processing an "if 1 {...}"; stop compiling
-	     * scripts
+	    /*
+	     * We were processing an "if 1 {...}"; stop compiling scripts.
 	     */
 
 	    compileScripts = 0;
 	} else {
-	    /* 
-	     *We were processing an "if 0 {...}"; reset so that
-	     * the rest (elseif, else) is compiled correctly
+	    /*
+	     * We were processing an "if 0 {...}"; reset so that the rest
+	     * (elseif, else) is compiled correctly.
 	     */
 
 	    realCond = 1;
 	    compileScripts = 1;
-	} 
+	}
 
-	tokenPtr += (tokenPtr->numComponents + 1);
+	tokenPtr = TokenAfter(tokenPtr);
 	wordIdx++;
     }
 
     /*
-     * Restore the current stack depth in the environment; the 
-     * "else" clause (or its default) will add 1 to this.
+     * Restore the current stack depth in the environment; the "else" clause
+     * (or its default) will add 1 to this.
      */
 
     envPtr->currStackDepth = savedStackDepth;
 
     /*
-     * Check for the optional else clause. Do not compile
-     * anything if this was an "if 1 {...}" case.
+     * Check for the optional else clause. Do not compile anything if this was
+     * an "if 1 {...}" case.
      */
 
-    if ((wordIdx < numWords)
-	    && (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD)) {
+    if ((wordIdx < numWords) && (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD)) {
 	/*
 	 * There is an else clause. Skip over the optional "else" word.
 	 */
@@ -1448,12 +2293,9 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 	word = tokenPtr[1].start;
 	numBytes = tokenPtr[1].size;
 	if ((numBytes == 4) && (strncmp(word, "else", 4) == 0)) {
-	    tokenPtr += (tokenPtr->numComponents + 1);
+	    tokenPtr = TokenAfter(tokenPtr);
 	    wordIdx++;
 	    if (wordIdx >= numWords) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		        "wrong # args: no script following \"else\" argument", -1);
 		code = TCL_ERROR;
 		goto done;
 	    }
@@ -1463,28 +2305,17 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 	    /*
 	     * Compile the else command body.
 	     */
+
 	    SetLineInformation (wordIdx);
-	    code = TclCompileCmdWord(interp, tokenPtr+1,
-		    tokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		if (code == TCL_ERROR) {
-		    sprintf(buffer, "\n    (\"if\" else script line %d)",
-			    interp->errorLine);
-		    Tcl_AddObjErrorInfo(interp, buffer, -1);
-		}
-		goto done;
-	    }
+	    CompileBody(envPtr, tokenPtr, interp);
 	}
 
 	/*
 	 * Make sure there are no words after the else clause.
 	 */
-	
+
 	wordIdx++;
 	if (wordIdx < numWords) {
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		    "wrong # args: extra words after \"else\" clause in \"if\" command", -1);
 	    code = TCL_ERROR;
 	    goto done;
 	}
@@ -1494,28 +2325,27 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 	 */
 
 	if (compileScripts) {
-	    TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
+	    PushLiteral(envPtr, "", 0);
 	}
     }
 
     /*
      * Fix the unconditional jumps to the end of the "if" command.
      */
-    
+
     for (j = jumpEndFixupArray.next;  j > 0;  j--) {
-	jumpIndex = (j - 1);	/* i.e. process the closest jump first */
-	jumpDist = (envPtr->codeNext - envPtr->codeStart)
-	        - jumpEndFixupArray.fixup[jumpIndex].codeOffset;
-	if (TclFixupForwardJump(envPtr,
-	        &(jumpEndFixupArray.fixup[jumpIndex]), jumpDist, 127)) {
+	jumpIndex = (j - 1);	/* i.e. process the closest jump first. */
+	if (TclFixupForwardJumpToHere(envPtr,
+		jumpEndFixupArray.fixup+jumpIndex, 127)) {
 	    /*
-	     * Adjust the immediately preceeding "ifFalse" jump. We moved
-	     * it's target (just after this jump) down three bytes.
+	     * Adjust the immediately preceeding "ifFalse" jump. We moved it's
+	     * target (just after this jump) down three bytes.
 	     */
 
 	    unsigned char *ifFalsePc = envPtr->codeStart
-	            + jumpFalseFixupArray.fixup[jumpIndex].codeOffset;
+		    + jumpFalseFixupArray.fixup[jumpIndex].codeOffset;
 	    unsigned char opCode = *ifFalsePc;
+
 	    if (opCode == INST_JUMP_FALSE1) {
 		jumpFalseDist = TclGetInt1AtPtr(ifFalsePc + 1);
 		jumpFalseDist += 3;
@@ -1525,7 +2355,7 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
 		jumpFalseDist += 3;
 		TclStoreInt4AtPtr(jumpFalseDist, (ifFalsePc + 1));
 	    } else {
-		panic("TclCompileIfCmd: unexpected opcode updating ifFalse jump");
+		Tcl_Panic("TclCompileIfCmd: unexpected opcode \"%d\" updating ifFalse jump", (int) opCode);
 	    }
 	}
     }
@@ -1534,7 +2364,7 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
      * Free the jumpFixupArray array if malloc'ed storage was used.
      */
 
-    done:
+  done:
     envPtr->currStackDepth = savedStackDepth + 1;
     TclFreeJumpFixupArray(&jumpFalseFixupArray);
     TclFreeJumpFixupArray(&jumpEndFixupArray);
@@ -1549,50 +2379,37 @@ TclCompileIfCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "incr" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	compilation was successful. If an error occurs then the
- *	interpreter's result contains a standard error message and TCL_ERROR
- *	is returned. If the command is too complex for TclCompileIncrCmd,
- *	TCL_OUT_LINE_COMPILE is returned indicating that the incr command
- *	should be compiled "out of line" by emitting code to invoke its
- *	command procedure at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "incr" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "incr" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileIncrCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileIncrCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *varTokenPtr, *incrTokenPtr;
     int simpleVarName, isScalar, localIndex, haveImmValue, immValue;
-    int code = TCL_OK;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     if ((parsePtr->numWords != 2) && (parsePtr->numWords != 3)) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"incr varName ?increment?\"", -1);
 	return TCL_ERROR;
     }
 
-    varTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
 
-    code = TclPushVarNameWord(interp, varTokenPtr, envPtr, 
-	    (TCL_NO_LARGE_INDEX | TCL_CREATE_VAR),
-	    &localIndex, &simpleVarName, &isScalar, 1);
-    if (code != TCL_OK) {
-	goto done;
-    }
+    PushVarNameWord(interp, varTokenPtr, envPtr, TCL_NO_LARGE_INDEX|TCL_CREATE_VAR,
+		    &localIndex, &simpleVarName, &isScalar, 1);
 
     /*
      * If an increment is given, push it, but see first if it's a small
@@ -1602,44 +2419,29 @@ TclCompileIncrCmd(interp, parsePtr, envPtr)
     haveImmValue = 0;
     immValue = 1;
     if (parsePtr->numWords == 3) {
-	incrTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
+	incrTokenPtr = TokenAfter(varTokenPtr);
 	if (incrTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    CONST char *word = incrTokenPtr[1].start;
+	    const char *word = incrTokenPtr[1].start;
 	    int numBytes = incrTokenPtr[1].size;
-
-	    /*
-	     * Note there is a danger that modifying the string could have
-	     * undesirable side effects.  In this case, TclLooksLikeInt has
-	     * no dependencies on shared strings so we should be safe.
-	     */
-
-	    if (TclLooksLikeInt(word, numBytes)) {
-		int code;
-		Tcl_Obj *intObj = Tcl_NewStringObj(word, numBytes);
-		Tcl_IncrRefCount(intObj);
-		code = Tcl_GetIntFromObj(NULL, intObj, &immValue);
-		Tcl_DecrRefCount(intObj);
-		if ((code == TCL_OK)
-			&& (-127 <= immValue) && (immValue <= 127)) {
-		    haveImmValue = 1;
-		}
+	    int code;
+	    Tcl_Obj *intObj = Tcl_NewStringObj(word, numBytes);
+	    Tcl_IncrRefCount(intObj);
+	    code = TclGetIntFromObj(NULL, intObj, &immValue);
+	    TclDecrRefCount(intObj);
+	    if ((code == TCL_OK) && (-127 <= immValue) && (immValue <= 127)) {
+		haveImmValue = 1;
 	    }
 	    if (!haveImmValue) {
-		TclEmitPush(
-			TclRegisterNewLiteral(envPtr, word, numBytes), envPtr);
+		PushLiteral(envPtr, word, numBytes);
 	    }
 	} else {
 	    SetLineInformation (2);
-	    code = TclCompileTokens(interp, incrTokenPtr+1, 
-	            incrTokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
+	    CompileTokens(envPtr, incrTokenPtr, interp);
 	}
-    } else {			/* no incr amount given so use 1 */
+    } else {			/* No incr amount given so use 1. */
 	haveImmValue = 1;
     }
-    
+
     /*
      * Emit the instruction to increment the variable.
      */
@@ -1676,16 +2478,15 @@ TclCompileIncrCmd(interp, parsePtr, envPtr)
 		}
 	    }
 	}
-    } else {			/* non-simple variable name */
+    } else {			/* Non-simple variable name. */
 	if (haveImmValue) {
 	    TclEmitInstInt1(INST_INCR_STK_IMM, immValue, envPtr);
 	} else {
 	    TclEmitOpcode(INST_INCR_STK, envPtr);
 	}
     }
-	
-    done:
-    return code;
+
+    return TCL_OK;
 }
 
 /*
@@ -1696,53 +2497,47 @@ TclCompileIncrCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "lappend" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is normally TCL_OK
- *	unless there was an error while parsing string. If an error occurs
- *	then the interpreter's result contains a standard error message. If
- *	compilation fails because the command requires a second level of
- *	substitutions, TCL_OUT_LINE_COMPILE is returned indicating that the
- *	command should be compiled "out of line" by emitting code to
- *	invoke its command procedure (Tcl_LappendObjCmd) at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "lappend" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "lappend" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileLappendCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileLappendCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
-    Tcl_Token *varTokenPtr, *valueTokenPtr;
+    Tcl_Token *varTokenPtr;
     int simpleVarName, isScalar, localIndex, numWords;
-    int code = TCL_OK;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     /*
      * If we're not in a procedure, don't compile.
      */
+
     if (envPtr->procPtr == NULL) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     numWords = parsePtr->numWords;
     if (numWords == 1) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		"wrong # args: should be \"lappend varName ?value value ...?\"", -1);
 	return TCL_ERROR;
     }
     if (numWords != 3) {
 	/*
-	 * LAPPEND instructions currently only handle one value appends
+	 * LAPPEND instructions currently only handle one value appends.
 	 */
-        return TCL_OUT_LINE_COMPILE;
+
+	return TCL_ERROR;
     }
 
     /*
@@ -1750,36 +2545,22 @@ TclCompileLappendCmd(interp, parsePtr, envPtr)
      * need to emit code to compute and push the name at runtime. We use a
      * frame slot (entry in the array of local vars) if we are compiling a
      * procedure body and if the name is simple text that does not include
-     * namespace qualifiers. 
+     * namespace qualifiers.
      */
 
-    varTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
 
-    code = TclPushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
-	    &localIndex, &simpleVarName, &isScalar, 1);
-    if (code != TCL_OK) {
-	goto done;
-    }
+    PushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
+		    &localIndex, &simpleVarName, &isScalar, 1);
 
     /*
-     * If we are doing an assignment, push the new value.
-     * In the no values case, create an empty object.
+     * If we are doing an assignment, push the new value. In the no values
+     * case, create an empty object.
      */
 
     if (numWords > 2) {
-	valueTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-	if (valueTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    TclEmitPush(TclRegisterNewLiteral(envPtr, 
-		    valueTokenPtr[1].start, valueTokenPtr[1].size), envPtr);
-	} else {
-	    SetLineInformation (2);
-	    code = TclCompileTokens(interp, valueTokenPtr+1,
-	            valueTokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
-	}
+	Tcl_Token *valueTokenPtr = TokenAfter(varTokenPtr);
+	CompileWord(envPtr, valueTokenPtr, interp, 2);
     }
 
     /*
@@ -1790,112 +2571,239 @@ TclCompileLappendCmd(interp, parsePtr, envPtr)
      * The *_STK opcodes should be refactored to make better use of existing
      * LOAD/STORE instructions.
      */
+
     if (simpleVarName) {
 	if (isScalar) {
-	    if (localIndex >= 0) {
-		if (localIndex <= 255) {
-		    TclEmitInstInt1(INST_LAPPEND_SCALAR1, localIndex, envPtr);
-		} else {
-		    TclEmitInstInt4(INST_LAPPEND_SCALAR4, localIndex, envPtr);
-		}
-	    } else {
+	    if (localIndex < 0) {
 		TclEmitOpcode(INST_LAPPEND_STK, envPtr);
+	    } else if (localIndex <= 255) {
+		TclEmitInstInt1(INST_LAPPEND_SCALAR1, localIndex, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_LAPPEND_SCALAR4, localIndex, envPtr);
 	    }
 	} else {
-	    if (localIndex >= 0) {
-		if (localIndex <= 255) {
-		    TclEmitInstInt1(INST_LAPPEND_ARRAY1, localIndex, envPtr);
-		} else {
-		    TclEmitInstInt4(INST_LAPPEND_ARRAY4, localIndex, envPtr);
-		}
-	    } else {
+	    if (localIndex < 0) {
 		TclEmitOpcode(INST_LAPPEND_ARRAY_STK, envPtr);
+	    } else if (localIndex <= 255) {
+		TclEmitInstInt1(INST_LAPPEND_ARRAY1, localIndex, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_LAPPEND_ARRAY4, localIndex, envPtr);
 	    }
 	}
     } else {
 	TclEmitOpcode(INST_LAPPEND_STK, envPtr);
     }
 
-    done:
-    return code;
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclCompileLindexCmd --
+ * TclCompileLassignCmd --
  *
- *	Procedure called to compile the "lindex" command.
+ *	Procedure called to compile the "lassign" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if the
- *	compilation was successful.  If the command cannot be byte-compiled,
- *	TCL_OUT_LINE_COMPILE is returned.  If an error occurs then the
- *	interpreter's result contains an error message, and TCL_ERROR is
- *	returned.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "lindex" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "lassign" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileLindexCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileLassignCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
-    Tcl_Token *varTokenPtr;
-    int code, i;
-    int numWords;
-
-    DefineLineInformation;
+    Tcl_Token *tokenPtr;
+    int simpleVarName, isScalar, localIndex, numWords, idx;
+    DefineLineInformation;	/* TIP #280 */
 
     numWords = parsePtr->numWords;
 
     /*
-     * Quit if too few args
+     * Check for command syntax error, but we'll punt that to runtime.
      */
 
-    if ( numWords <= 1 ) {
-	return TCL_OUT_LINE_COMPILE;
+    if (numWords < 3) {
+	return TCL_ERROR;
     }
 
-    varTokenPtr = parsePtr->tokenPtr
-	+ (parsePtr->tokenPtr->numComponents + 1);
-    
     /*
-     * Push the operands onto the stack.
+     * Generate code to push list being taken apart by [lassign].
      */
-	
-    for ( i = 1 ; i < numWords ; i++ ) {
-	if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    TclEmitPush(
-		    TclRegisterNewLiteral( envPtr, varTokenPtr[1].start,
-		    varTokenPtr[1].size), envPtr);
-	} else {
-	    SetLineInformation (i);
-	    code = TclCompileTokens(interp, varTokenPtr+1,
-				    varTokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		return code;
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 1);
+
+    /*
+     * Generate code to assign values from the list to variables.
+     */
+
+    for (idx=0 ; idx<numWords-2 ; idx++) {
+	tokenPtr = TokenAfter(tokenPtr);
+
+	/*
+	 * Generate the next variable name.
+	 */
+
+	PushVarNameWord(interp, tokenPtr, envPtr, TCL_CREATE_VAR, &localIndex,
+			&simpleVarName, &isScalar, idx+2);
+
+	/*
+	 * Emit instructions to get the idx'th item out of the list value on
+	 * the stack and assign it to the variable.
+	 */
+
+	if (simpleVarName) {
+	    if (isScalar) {
+		if (localIndex >= 0) {
+		    TclEmitOpcode(INST_DUP, envPtr);
+		    TclEmitInstInt4(INST_LIST_INDEX_IMM, idx, envPtr);
+		    if (localIndex <= 255) {
+			TclEmitInstInt1(INST_STORE_SCALAR1,localIndex,envPtr);
+		    } else {
+			TclEmitInstInt4(INST_STORE_SCALAR4,localIndex,envPtr);
+		    }
+		} else {
+		    TclEmitInstInt4(INST_OVER, 1, envPtr);
+		    TclEmitInstInt4(INST_LIST_INDEX_IMM, idx, envPtr);
+		    TclEmitOpcode(INST_STORE_SCALAR_STK, envPtr);
+		}
+	    } else {
+		if (localIndex >= 0) {
+		    TclEmitInstInt4(INST_OVER, 1, envPtr);
+		    TclEmitInstInt4(INST_LIST_INDEX_IMM, idx, envPtr);
+		    if (localIndex <= 255) {
+			TclEmitInstInt1(INST_STORE_ARRAY1, localIndex, envPtr);
+		    } else {
+			TclEmitInstInt4(INST_STORE_ARRAY4, localIndex, envPtr);
+		    }
+		} else {
+		    TclEmitInstInt4(INST_OVER, 2, envPtr);
+		    TclEmitInstInt4(INST_LIST_INDEX_IMM, idx, envPtr);
+		    TclEmitOpcode(INST_STORE_ARRAY_STK, envPtr);
+		}
 	    }
+	} else {
+	    TclEmitInstInt4(INST_OVER, 1, envPtr);
+	    TclEmitInstInt4(INST_LIST_INDEX_IMM, idx, envPtr);
+	    TclEmitOpcode(INST_STORE_STK, envPtr);
 	}
-	varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
+	TclEmitOpcode(INST_POP, envPtr);
     }
-	
+
     /*
-     * Emit INST_LIST_INDEX if objc==3, or INST_LIST_INDEX_MULTI
-     * if there are multiple index args.
+     * Generate code to leave the rest of the list on the stack.
      */
 
-    if ( numWords == 3 ) {
-	TclEmitOpcode( INST_LIST_INDEX, envPtr );
+    TclEmitInstInt4(INST_LIST_RANGE_IMM, idx, envPtr);
+    TclEmitInt4(-2, envPtr);	/* -2 == "end" */
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileLindexCmd --
+ *
+ *	Procedure called to compile the "lindex" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "lindex" command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileLindexCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *idxTokenPtr, *valTokenPtr;
+    int i, numWords = parsePtr->numWords;
+    DefineLineInformation;	/* TIP #280 */
+
+    /*
+     * Quit if too few args.
+     */
+
+    if (numWords <= 1) {
+	return TCL_ERROR;
+    }
+
+    valTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (numWords != 3) {
+	goto emitComplexLindex;
+    }
+
+    idxTokenPtr = TokenAfter(valTokenPtr);
+    if (idxTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
+	Tcl_Obj *tmpObj;
+	int idx, result;
+
+	tmpObj = Tcl_NewStringObj(idxTokenPtr[1].start, idxTokenPtr[1].size);
+	result = TclGetIntFromObj(NULL, tmpObj, &idx);
+	TclDecrRefCount(tmpObj);
+
+	if (result == TCL_OK && idx >= 0) {
+	    /*
+	     * All checks have been completed, and we have exactly this
+	     * construct:
+	     *	 lindex <arbitraryValue> <posInt>
+	     * This is best compiled as a push of the arbitrary value followed
+	     * by an "immediate lindex" which is the most efficient variety.
+	     */
+
+	    CompileWord(envPtr, valTokenPtr, interp, 1);
+	    TclEmitInstInt4(INST_LIST_INDEX_IMM, idx, envPtr);
+	    return TCL_OK;
+	}
+
+	/*
+	 * If the conversion failed or the value was negative, we just keep on
+	 * going with the more complex compilation.
+	 */
+    }
+
+    /*
+     * Push the operands onto the stack.
+     */
+
+  emitComplexLindex:
+    for (i=1 ; i<numWords ; i++) {
+	CompileWord(envPtr, valTokenPtr, interp, i);
+	valTokenPtr = TokenAfter(valTokenPtr);
+    }
+
+    /*
+     * Emit INST_LIST_INDEX if objc==3, or INST_LIST_INDEX_MULTI if there are
+     * multiple index args.
+     */
+
+    if (numWords == 3) {
+	TclEmitOpcode(INST_LIST_INDEX, envPtr);
     } else {
- 	TclEmitInstInt4( INST_LIST_INDEX_MULTI, numWords-1, envPtr );
+ 	TclEmitInstInt4(INST_LIST_INDEX_MULTI, numWords-1, envPtr);
     }
 
     return TCL_OK;
@@ -1909,67 +2817,55 @@ TclCompileLindexCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "list" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is normally TCL_OK
- *	unless there was an error while parsing string. If an error occurs
- *	then the interpreter's result contains a standard error message. If
- *	compilation fails because the command requires a second level of
- *	substitutions, TCL_OUT_LINE_COMPILE is returned indicating that the
- *	command should be compiled "out of line" by emitting code to
- *	invoke its command procedure (Tcl_ListObjCmd) at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "list" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "list" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileListCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileListCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     /*
      * If we're not in a procedure, don't compile.
      */
+
     if (envPtr->procPtr == NULL) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     if (parsePtr->numWords == 1) {
 	/*
-	 * Empty args case
+	 * [list] without arguments just pushes an empty object.
 	 */
 
-	TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
+	PushLiteral(envPtr, "", 0);
     } else {
 	/*
 	 * Push the all values onto the stack.
 	 */
+
 	Tcl_Token *valueTokenPtr;
-	int i, code, numWords;
+	int i, numWords;
 
 	numWords = parsePtr->numWords;
 
-	valueTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
+	valueTokenPtr = TokenAfter(parsePtr->tokenPtr);
 	for (i = 1; i < numWords; i++) {
-	    if (valueTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-		TclEmitPush(TclRegisterNewLiteral(envPtr,
-			valueTokenPtr[1].start, valueTokenPtr[1].size), envPtr);
-	    } else {
-		SetLineInformation (i);
-		code = TclCompileTokens(interp, valueTokenPtr+1,
-			valueTokenPtr->numComponents, envPtr);
-		if (code != TCL_OK) {
-		    return code;
-		}
-	    }
-	    valueTokenPtr = valueTokenPtr + (valueTokenPtr->numComponents + 1);
+	    CompileWord(envPtr, valueTokenPtr, interp, i);
+	    valueTokenPtr = TokenAfter(valueTokenPtr);
 	}
 	TclEmitInstInt4(INST_LIST, numWords - 1, envPtr);
     }
@@ -1985,54 +2881,34 @@ TclCompileListCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "llength" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if the
- *	compilation was successful.  If the command cannot be byte-compiled,
- *	TCL_OUT_LINE_COMPILE is returned.  If an error occurs then the
- *	interpreter's result contains an error message, and TCL_ERROR is
- *	returned.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "llength" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "llength" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileLlengthCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileLlengthCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *varTokenPtr;
-    int code;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     if (parsePtr->numWords != 2) {
-	Tcl_SetResult(interp, "wrong # args: should be \"llength list\"",
-		TCL_STATIC);
 	return TCL_ERROR;
     }
-    varTokenPtr = parsePtr->tokenPtr
-	+ (parsePtr->tokenPtr->numComponents + 1);
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
 
-    if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	/*
-	 * We could simply count the number of elements here and push
-	 * that value, but that is too rare a case to waste the code space.
-	 */
-	TclEmitPush(TclRegisterNewLiteral(envPtr, varTokenPtr[1].start,
-		varTokenPtr[1].size), envPtr);
-    } else {
-	SetLineInformation (1);
-	code = TclCompileTokens(interp, varTokenPtr+1,
-		varTokenPtr->numComponents, envPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-    }
+    CompileWord(envPtr, varTokenPtr, interp, 1);
     TclEmitOpcode(INST_LIST_LENGTH, envPtr);
     return TCL_OK;
 }
@@ -2045,197 +2921,175 @@ TclCompileLlengthCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "lset" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	the compilation was successful.  If the "lset" command is too
- *	complex for this function, then TCL_OUT_LINE_COMPILE is returned,
- *	indicating that the command should be compiled "out of line"
- *	(that is, not byte-compiled).  If an error occurs, TCL_ERROR is
- *	returned, and the interpreter result contains an error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "lset" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "lset" command at
+ *	runtime.
  *
  * The general template for execution of the "lset" command is:
- *	(1) Instructions to push the variable name, unless the
- *	    variable is local to the stack frame.
- *	(2) If the variable is an array element, instructions
- *	    to push the array element name.
- *	(3) Instructions to push each of zero or more "index" arguments
- *	    to the stack, followed with the "newValue" element.
- *	(4) Instructions to duplicate the variable name and/or array
- *	    element name onto the top of the stack, if either was
- *	    pushed at steps (1) and (2).
- *	(5) The appropriate INST_LOAD_* instruction to place the
- *	    original value of the list variable at top of stack.
+ *	(1) Instructions to push the variable name, unless the variable is
+ *	    local to the stack frame.
+ *	(2) If the variable is an array element, instructions to push the
+ *	    array element name.
+ *	(3) Instructions to push each of zero or more "index" arguments to the
+ *	    stack, followed with the "newValue" element.
+ *	(4) Instructions to duplicate the variable name and/or array element
+ *	    name onto the top of the stack, if either was pushed at steps (1)
+ *	    and (2).
+ *	(5) The appropriate INST_LOAD_* instruction to place the original
+ *	    value of the list variable at top of stack.
  *	(6) At this point, the stack contains:
- *	     varName? arrayElementName? index1 index2 ... newValue oldList
+ *		varName? arrayElementName? index1 index2 ... newValue oldList
  *	    The compiler emits one of INST_LSET_FLAT or INST_LSET_LIST
- *	    according as whether there is exactly one index element (LIST)
- *	    or either zero or else two or more (FLAT).  This instruction
- *	    removes everything from the stack except for the two names
- *	    and pushes the new value of the variable.
- *	(7) Finally, INST_STORE_* stores the new value in the variable
- *	    and cleans up the stack.
+ *	    according as whether there is exactly one index element (LIST) or
+ *	    either zero or else two or more (FLAT). This instruction removes
+ *	    everything from the stack except for the two names and pushes the
+ *	    new value of the variable.
+ *	(7) Finally, INST_STORE_* stores the new value in the variable and
+ *	    cleans up the stack.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileLsetCmd( interp, parsePtr, envPtr )
-    Tcl_Interp* interp;		/* Tcl interpreter for error reporting */
-    Tcl_Parse* parsePtr;	/* Points to a parse structure for
-				 * the command */
-    CompileEnv* envPtr;		/* Holds the resulting instructions */
+TclCompileLsetCmd(
+    Tcl_Interp *interp,		/* Tcl interpreter for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
+				 * command. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds the resulting instructions. */
 {
-
-    int tempDepth;		/* Depth used for emitting one part
-				 * of the code burst. */
-    Tcl_Token* varTokenPtr;	/* Pointer to the Tcl_Token representing
-				 * the parse of the variable name */
-
-    int result;			/* Status return from library calls */
-
-    int localIndex;		/* Index of var in local var table */
-    int simpleVarName;		/* Flag == 1 if var name is simple */
-    int isScalar;		/* Flag == 1 if scalar, 0 if array */
-
+    int tempDepth;		/* Depth used for emitting one part of the
+				 * code burst. */
+    Tcl_Token *varTokenPtr;	/* Pointer to the Tcl_Token representing the
+				 * parse of the variable name. */
+    int localIndex;		/* Index of var in local var table. */
+    int simpleVarName;		/* Flag == 1 if var name is simple. */
+    int isScalar;		/* Flag == 1 if scalar, 0 if array. */
     int i;
+    DefineLineInformation;	/* TIP #280 */
 
-    DefineLineInformation;
+    /*
+     * Check argument count.
+     */
 
-    /* Check argument count */
+    if (parsePtr->numWords < 3) {
+	/*
+	 * Fail at run time, not in compilation.
+	 */
 
-    if ( parsePtr->numWords < 3 ) {
-	/* Fail at run time, not in compilation */
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     /*
-     * Decide if we can use a frame slot for the var/array name or if we
-     * need to emit code to compute and push the name at runtime. We use a
-     * frame slot (entry in the array of local vars) if we are compiling a
-     * procedure body and if the name is simple text that does not include
-     * namespace qualifiers. 
+     * Decide if we can use a frame slot for the var/array name or if we need
+     * to emit code to compute and push the name at runtime. We use a frame
+     * slot (entry in the array of local vars) if we are compiling a procedure
+     * body and if the name is simple text that does not include namespace
+     * qualifiers.
      */
 
-    varTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
-    result = TclPushVarNameWord( interp, varTokenPtr, envPtr, 
-            TCL_CREATE_VAR, &localIndex, &simpleVarName, &isScalar, 1);
-    if (result != TCL_OK) {
-	return result;
-    }
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    PushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
+		    &localIndex, &simpleVarName, &isScalar, 1);
 
-    /* Push the "index" args and the new element value. */
-
-    for ( i = 2; i < parsePtr->numWords; ++i ) {
-
-	/* Advance to next arg */
-
-	varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-
-	/* Push an arg */
+    /*
+     * Push the "index" args and the new element value.
+     */
 
-	if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    TclEmitPush(TclRegisterNewLiteral( envPtr, varTokenPtr[1].start,
-		    varTokenPtr[1].size), envPtr);
-	} else {
-	    SetLineInformation (i);
-	    result = TclCompileTokens(interp, varTokenPtr+1,
-				      varTokenPtr->numComponents, envPtr);
-	    if ( result != TCL_OK ) {
-		return result;
-	    }
-	}
+    for (i=2 ; i<parsePtr->numWords ; ++i) {
+	varTokenPtr = TokenAfter(varTokenPtr);
+	CompileWord(envPtr, varTokenPtr, interp, i);
     }
 
     /*
-     * Duplicate the variable name if it's been pushed.  
+     * Duplicate the variable name if it's been pushed.
      */
 
-    if ( !simpleVarName || localIndex < 0 ) {
-	if ( !simpleVarName || isScalar ) {
+    if (!simpleVarName || localIndex < 0) {
+	if (!simpleVarName || isScalar) {
 	    tempDepth = parsePtr->numWords - 2;
 	} else {
 	    tempDepth = parsePtr->numWords - 1;
 	}
-	TclEmitInstInt4( INST_OVER, tempDepth, envPtr );
+	TclEmitInstInt4(INST_OVER, tempDepth, envPtr);
     }
 
     /*
-     * Duplicate an array index if one's been pushed
+     * Duplicate an array index if one's been pushed.
      */
 
-    if ( simpleVarName && !isScalar ) {
-	if ( localIndex < 0 ) {
+    if (simpleVarName && !isScalar) {
+	if (localIndex < 0) {
 	    tempDepth = parsePtr->numWords - 1;
 	} else {
 	    tempDepth = parsePtr->numWords - 2;
 	}
-	TclEmitInstInt4( INST_OVER, tempDepth, envPtr );
+	TclEmitInstInt4(INST_OVER, tempDepth, envPtr);
     }
 
     /*
      * Emit code to load the variable's value.
      */
 
-    if ( !simpleVarName ) {
-	TclEmitOpcode( INST_LOAD_STK, envPtr );
-    } else if ( isScalar ) {
-	if ( localIndex < 0 ) {
-	    TclEmitOpcode( INST_LOAD_SCALAR_STK, envPtr );
-	} else if ( localIndex < 0x100 ) {
-	    TclEmitInstInt1( INST_LOAD_SCALAR1, localIndex, envPtr );
+    if (!simpleVarName) {
+	TclEmitOpcode(INST_LOAD_STK, envPtr);
+    } else if (isScalar) {
+	if (localIndex < 0) {
+	    TclEmitOpcode(INST_LOAD_SCALAR_STK, envPtr);
+	} else if (localIndex < 0x100) {
+	    TclEmitInstInt1(INST_LOAD_SCALAR1, localIndex, envPtr);
 	} else {
-	    TclEmitInstInt4( INST_LOAD_SCALAR4, localIndex, envPtr );
+	    TclEmitInstInt4(INST_LOAD_SCALAR4, localIndex, envPtr);
 	}
     } else {
-	if ( localIndex < 0 ) {
-	    TclEmitOpcode( INST_LOAD_ARRAY_STK, envPtr );
-	} else if ( localIndex < 0x100 ) {
-	    TclEmitInstInt1( INST_LOAD_ARRAY1, localIndex, envPtr );
+	if (localIndex < 0) {
+	    TclEmitOpcode(INST_LOAD_ARRAY_STK, envPtr);
+	} else if (localIndex < 0x100) {
+	    TclEmitInstInt1(INST_LOAD_ARRAY1, localIndex, envPtr);
 	} else {
-	    TclEmitInstInt4( INST_LOAD_ARRAY4, localIndex, envPtr );
+	    TclEmitInstInt4(INST_LOAD_ARRAY4, localIndex, envPtr);
 	}
     }
 
     /*
-     * Emit the correct variety of 'lset' instruction
+     * Emit the correct variety of 'lset' instruction.
      */
 
-    if ( parsePtr->numWords == 4 ) {
-	TclEmitOpcode( INST_LSET_LIST, envPtr );
+    if (parsePtr->numWords == 4) {
+	TclEmitOpcode(INST_LSET_LIST, envPtr);
     } else {
-	TclEmitInstInt4( INST_LSET_FLAT, (parsePtr->numWords - 1), envPtr );
+	TclEmitInstInt4(INST_LSET_FLAT, parsePtr->numWords-1, envPtr);
     }
 
     /*
-     * Emit code to put the value back in the variable
+     * Emit code to put the value back in the variable.
      */
 
-    if ( !simpleVarName ) {
-	TclEmitOpcode( INST_STORE_STK, envPtr );
-    } else if ( isScalar ) {
-	if ( localIndex < 0 ) {
-	    TclEmitOpcode( INST_STORE_SCALAR_STK, envPtr );
-	} else if ( localIndex < 0x100 ) {
-	    TclEmitInstInt1( INST_STORE_SCALAR1, localIndex, envPtr );
+    if (!simpleVarName) {
+	TclEmitOpcode(INST_STORE_STK, envPtr);
+    } else if (isScalar) {
+	if (localIndex < 0) {
+	    TclEmitOpcode(INST_STORE_SCALAR_STK, envPtr);
+	} else if (localIndex < 0x100) {
+	    TclEmitInstInt1(INST_STORE_SCALAR1, localIndex, envPtr);
 	} else {
-	    TclEmitInstInt4( INST_STORE_SCALAR4, localIndex, envPtr );
+	    TclEmitInstInt4(INST_STORE_SCALAR4, localIndex, envPtr);
 	}
     } else {
-	if ( localIndex < 0 ) {
-	    TclEmitOpcode( INST_STORE_ARRAY_STK, envPtr );
-	} else if ( localIndex < 0x100 ) {
-	    TclEmitInstInt1( INST_STORE_ARRAY1, localIndex, envPtr );
+	if (localIndex < 0) {
+	    TclEmitOpcode(INST_STORE_ARRAY_STK, envPtr);
+	} else if (localIndex < 0x100) {
+	    TclEmitInstInt1(INST_STORE_ARRAY1, localIndex, envPtr);
 	} else {
-	    TclEmitInstInt4( INST_STORE_ARRAY4, localIndex, envPtr );
+	    TclEmitInstInt4(INST_STORE_ARRAY4, localIndex, envPtr);
 	}
     }
-    
-    return TCL_OK;
 
+    return TCL_OK;
 }
 
 /*
@@ -2246,193 +3100,155 @@ TclCompileLsetCmd( interp, parsePtr, envPtr )
  *	Procedure called to compile the "regexp" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	the compilation was successful.  If the "regexp" command is too
- *	complex for this function, then TCL_OUT_LINE_COMPILE is returned,
- *	indicating that the command should be compiled "out of line"
- *	(that is, not byte-compiled).  If an error occurs, TCL_ERROR is
- *	returned, and the interpreter result contains an error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "regexp" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "regexp" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileRegexpCmd(interp, parsePtr, envPtr)
-    Tcl_Interp* interp;		/* Tcl interpreter for error reporting */
-    Tcl_Parse* parsePtr;	/* Points to a parse structure for
-				 * the command */
-    CompileEnv* envPtr;		/* Holds the resulting instructions */
-{
-    Tcl_Token *varTokenPtr;	/* Pointer to the Tcl_Token representing
-				 * the parse of the RE or string */
-    int i, len, code, nocase, anchorLeft, anchorRight, start;
+TclCompileRegexpCmd(
+    Tcl_Interp *interp,		/* Tcl interpreter for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
+				 * command. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds the resulting instructions. */
+{
+    Tcl_Token *varTokenPtr;	/* Pointer to the Tcl_Token representing the
+				 * parse of the RE or string. */
+    int i, len, nocase, exact, sawLast, simple;
     char *str;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     /*
-     * We are only interested in compiling simple regexp cases.
-     * Currently supported compile cases are:
+     * We are only interested in compiling simple regexp cases. Currently
+     * supported compile cases are:
      *   regexp ?-nocase? ?--? staticString $var
      *   regexp ?-nocase? ?--? {^staticString$} $var
      */
+
     if (parsePtr->numWords < 3) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
+    simple = 0;
     nocase = 0;
+    sawLast = 0;
     varTokenPtr = parsePtr->tokenPtr;
 
     /*
-     * We only look for -nocase and -- as options.  Everything else
-     * gets pushed to runtime execution.  This is different than regexp's
-     * runtime option handling, but satisfies our stricter needs.
+     * We only look for -nocase and -- as options. Everything else gets pushed
+     * to runtime execution. This is different than regexp's runtime option
+     * handling, but satisfies our stricter needs.
      */
+
     for (i = 1; i < parsePtr->numWords - 2; i++) {
-	varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
+	varTokenPtr = TokenAfter(varTokenPtr);
 	if (varTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-	    /* Not a simple string - punt to runtime. */
-	    return TCL_OUT_LINE_COMPILE;
+	    /*
+	     * Not a simple string, so punt to runtime.
+	     */
+
+	    return TCL_ERROR;
 	}
 	str = (char *) varTokenPtr[1].start;
 	len = varTokenPtr[1].size;
 	if ((len == 2) && (str[0] == '-') && (str[1] == '-')) {
+	    sawLast++;
 	    i++;
 	    break;
-	} else if ((len > 1)
-		&& (strncmp(str, "-nocase", (unsigned) len) == 0)) {
+	} else if ((len > 1) && (strncmp(str,"-nocase",(unsigned)len) == 0)) {
 	    nocase = 1;
 	} else {
-	    /* Not an option we recognize. */
-	    return TCL_OUT_LINE_COMPILE;
+	    /*
+	     * Not an option we recognize.
+	     */
+
+	    return TCL_ERROR;
 	}
     }
 
     if ((parsePtr->numWords - i) != 2) {
-	/* We don't support capturing to variables */
-	return TCL_OUT_LINE_COMPILE;
+	/*
+	 * We don't support capturing to variables.
+	 */
+
+	return TCL_ERROR;
     }
 
     /*
-     * Get the regexp string.  If it is not a simple string, punt to runtime.
-     * If it has a '-', it could be an incorrectly formed regexp command.
+     * Get the regexp string. If it is not a simple string or can't be
+     * converted to a glob pattern, push the word for the INST_REGEXP.
+     * Keep changes here in sync with TclCompileSwitchCmd Switch_Regexp.
      */
-    varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-    str = (char *) varTokenPtr[1].start;
-    len = varTokenPtr[1].size;
-    if ((varTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) || (*str == '-')) {
-	return TCL_OUT_LINE_COMPILE;
-    }
 
-    if (len == 0) {
+    varTokenPtr = TokenAfter(varTokenPtr);
+
+    if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
+	Tcl_DString ds;
+
+	str = (char *) varTokenPtr[1].start;
+	len = varTokenPtr[1].size;
 	/*
-	 * The semantics of regexp are always match on re == "".
+	 * If it has a '-', it could be an incorrectly formed regexp command.
 	 */
-	TclEmitPush(TclRegisterNewLiteral(envPtr, "1", 1), envPtr);
-	return TCL_OK;
-    }
-
-    /*
-     * Make a copy of the string that is null-terminated for checks which
-     * require such.
-     */
-    str = (char *) ckalloc((unsigned) len + 1);
-    strncpy(str, varTokenPtr[1].start, (size_t) len);
-    str[len] = '\0';
-    start = 0;
 
-    /*
-     * Check for anchored REs (ie ^foo$), so we can use string equal if
-     * possible. Do not alter the start of str so we can free it correctly.
-     */
-    if (str[0] == '^') {
-	start++;
-	anchorLeft = 1;
-    } else {
-	anchorLeft = 0;
-    }
-    if ((str[len-1] == '$') && ((len == 1) || (str[len-2] != '\\'))) {
-	anchorRight = 1;
-	str[--len] = '\0';
-    } else {
-	anchorRight = 0;
-    }
+	if ((*str == '-') && !sawLast) {
+	    return TCL_ERROR;
+	}
 
-    /*
-     * On the first (pattern) arg, check to see if any RE special characters
-     * are in the word.  If not, this is the same as 'string equal'.
-     */
-    if ((len > (1+start)) && (str[start] == '.') && (str[start+1] == '*')) {
-	start += 2;
-	anchorLeft = 0;
-    }
-    if ((len > (2+start)) && (str[len-3] != '\\')
-	    && (str[len-2] == '.') && (str[len-1] == '*')) {
-	len -= 2;
-	str[len] = '\0';
-	anchorRight = 0;
-    }
+	if (len == 0) {
+	    /*
+	     * The semantics of regexp are always match on re == "".
+	     */
 
-    /*
-     * Don't do anything with REs with other special chars.  Also check if
-     * this is a bad RE (do this at the end because it can be expensive).
-     * If so, let it complain at runtime.
-     */
-    if ((strpbrk(str + start, "*+?{}()[].\\|^$") != NULL)
-	    || (Tcl_RegExpCompile(NULL, str) == NULL)) {
-	ckfree((char *) str);
-	return TCL_OUT_LINE_COMPILE;
-    }
+	    PushLiteral(envPtr, "1", 1);
+	    return TCL_OK;
+	}
 
-    if (anchorLeft && anchorRight) {
-	TclEmitPush(TclRegisterNewLiteral(envPtr, str+start, len-start),
-		envPtr);
-    } else {
 	/*
-	 * This needs to find the substring anywhere in the string, so
-	 * use string match and *foo*, with appropriate anchoring.
+	 * Attempt to convert pattern to glob.  If successful, push the
+	 * converted pattern as a literal.
 	 */
-	char *newStr  = ckalloc((unsigned) len + 3);
-	len -= start;
-	if (anchorLeft) {
-	    strncpy(newStr, str + start, (size_t) len);
-	} else {
-	    newStr[0] = '*';
-	    strncpy(newStr + 1, str + start, (size_t) len++);
-	}
-	if (!anchorRight) {
-	    newStr[len++] = '*';
+
+	if (TclReToGlob(NULL, varTokenPtr[1].start, len, &ds, &exact)
+		== TCL_OK) {
+	    simple = 1;
+	    PushLiteral(envPtr, Tcl_DStringValue(&ds),Tcl_DStringLength(&ds));
+	    Tcl_DStringFree(&ds);
 	}
-	newStr[len] = '\0';
-	TclEmitPush(TclRegisterNewLiteral(envPtr, newStr, len), envPtr);
-	ckfree((char *) newStr);
     }
-    ckfree((char *) str);
+
+    if (!simple) {
+	CompileWord(envPtr, varTokenPtr, interp, parsePtr->numWords-2);
+    }
 
     /*
-     * Push the string arg
+     * Push the string arg.
      */
-    varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-    if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	TclEmitPush(TclRegisterNewLiteral(envPtr,
-		varTokenPtr[1].start, varTokenPtr[1].size), envPtr);
-    } else {
-	SetLineInformation (parsePtr->numWords-1);
-	code = TclCompileTokens(interp, varTokenPtr+1,
-		varTokenPtr->numComponents, envPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-    }
 
-    if (anchorLeft && anchorRight && !nocase) {
-	TclEmitOpcode(INST_STR_EQ, envPtr);
+    varTokenPtr = TokenAfter(varTokenPtr);
+    CompileWord(envPtr, varTokenPtr, interp, parsePtr->numWords-1);
+
+    if (simple) {
+	if (exact && !nocase) {
+	    TclEmitOpcode(INST_STR_EQ, envPtr);
+	} else {
+	    TclEmitInstInt1(INST_STR_MATCH, nocase, envPtr);
+	}
     } else {
-	TclEmitInstInt1(INST_STR_MATCH, nocase, envPtr);
+	/*
+	 * Pass correct RE compile flags.  We use only Int1 (8-bit), but
+	 * that handles all the flags we want to pass.
+	 * Don't use TCL_REG_NOSUB as we may have backrefs.
+	 */
+	int cflags = TCL_REG_ADVANCED | (nocase ? TCL_REG_NOCASE : 0);
+	TclEmitInstInt1(INST_REGEXP, cflags, envPtr);
     }
 
     return TCL_OK;
@@ -2446,117 +3262,191 @@ TclCompileRegexpCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "return" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if the
- *	compilation was successful.  If the particular return command is
- *	too complex for this function (ie, return with any flags like "-code"
- *	or "-errorinfo"), TCL_OUT_LINE_COMPILE is returned, indicating that
- *	the command should be compiled "out of line" (eg, not byte compiled).
- *	If an error occurs then the interpreter's result contains a standard
- *	error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "return" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "return" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileReturnCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileReturnCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
-    Tcl_Token *varTokenPtr;
-    int code;
-    int index = envPtr->exceptArrayNext - 1;
-
-    DefineLineInformation;
+    /*
+     * General syntax: [return ?-option value ...? ?result?]
+     * An even number of words means an explicit result argument is present.
+     */
+    int level, code, objc, size, status = TCL_OK;
+    int numWords = parsePtr->numWords;
+    int explicitResult = (0 == (numWords % 2));
+    int numOptionWords = numWords - 1 - explicitResult;
+    Tcl_Obj *returnOpts, **objv;
+    Tcl_Token *wordTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    DefineLineInformation;	/* TIP #280 */
 
     /*
-     * If we're not in a procedure, don't compile.
+     * Check for special case which can always be compiled:
+     *	    return -options <opts> <msg>
+     * Unlike the normal [return] compilation, this version does everything at
+     * runtime so it can handle arbitrary words and not just literals. Note
+     * that if INST_RETURN_STK wasn't already needed for something else
+     * ('finally' clause processing) this piece of code would not be present.
      */
 
-    if (envPtr->procPtr == NULL) {
-	return TCL_OUT_LINE_COMPILE;
+    if ((numWords == 4) && (wordTokenPtr->type == TCL_TOKEN_SIMPLE_WORD)
+	    && (wordTokenPtr[1].size == 8)
+	    && (strncmp(wordTokenPtr[1].start, "-options", 8) == 0)) {
+	Tcl_Token *optsTokenPtr = TokenAfter(wordTokenPtr);
+	Tcl_Token *msgTokenPtr = TokenAfter(optsTokenPtr);
+
+	CompileWord(envPtr, optsTokenPtr, interp, 2);
+	CompileWord(envPtr, msgTokenPtr,  interp, 3);
+	TclEmitOpcode(INST_RETURN_STK, envPtr);
+	return TCL_OK;
     }
 
     /*
-     * Look back through the ExceptionRanges of the current CompileEnv,
-     * from exceptArrayPtr[(exceptArrayNext - 1)] down to 
-     * exceptArrayPtr[0] to see if any of them is an enclosing [catch].
-     * If there's an enclosing [catch], don't compile.
+     * Allocate some working space.
+     */
+
+    objv = (Tcl_Obj **) TclStackAlloc(interp,
+	    numOptionWords * sizeof(Tcl_Obj *));
+
+    /*
+     * Scan through the return options. If any are unknown at compile time,
+     * there is no value in bytecompiling. Save the option values known in an
+     * objv array for merging into a return options dictionary.
      */
 
-    while (index >= 0) {
-	ExceptionRange range = envPtr->exceptArrayPtr[index];
-	if ((range.type == CATCH_EXCEPTION_RANGE) 
-		&& (range.catchOffset == -1)) {
-	    return TCL_OUT_LINE_COMPILE;
+    for (objc = 0; objc < numOptionWords; objc++) {
+	objv[objc] = Tcl_NewObj();
+	Tcl_IncrRefCount(objv[objc]);
+	if (!TclWordKnownAtCompileTime(wordTokenPtr, objv[objc])) {
+	    objc++;
+	    status = TCL_ERROR;
+	    goto cleanup;
 	}
-	index--;
+	wordTokenPtr = TokenAfter(wordTokenPtr);
+    }
+    status = TclMergeReturnOptions(interp, objc, objv,
+	    &returnOpts, &code, &level);
+  cleanup:
+    while (--objc >= 0) {
+	TclDecrRefCount(objv[objc]);
     }
+    TclStackFree(interp, objv);
+    if (TCL_ERROR == status) {
+	/*
+	 * Something was bogus in the return options. Clear the error message,
+	 * and report back to the compiler that this must be interpreted at
+	 * runtime.
+	 */
 
-    switch (parsePtr->numWords) {
-	case 1: {
-	    /*
-	     * Simple case:  [return]
-	     * Just push the literal string "".
-	     */
-	    TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
-	    break;
-	}
-	case 2: {
-	    /*
-	     * More complex cases:
-	     * [return "foo"]
-	     * [return $value]
-	     * [return [otherCmd]]
-	     */
-	    varTokenPtr = parsePtr->tokenPtr
-		+ (parsePtr->tokenPtr->numComponents + 1);
-	    if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-		/*
-		 * [return "foo"] case:  the parse token is a simple word,
-		 * so just push it.
-		 */
-		TclEmitPush(TclRegisterNewLiteral(envPtr, varTokenPtr[1].start,
-			varTokenPtr[1].size), envPtr);
-	    } else {
-		/*
-		 * Parse token is more complex, so compile it; this handles the
-		 * variable reference and nested command cases.  If the
-		 * parse token can be byte-compiled, then this instance of
-		 * "return" will be byte-compiled; otherwise it will be
-		 * out line compiled.
-		 */
-		SetLineInformation (1);
-		code = TclCompileTokens(interp, varTokenPtr+1,
-			varTokenPtr->numComponents, envPtr);
-		if (code != TCL_OK) {
-		    return code;
-		}
+	Tcl_ResetResult(interp);
+	return TCL_ERROR;
+    }
+
+    /*
+     * All options are known at compile time, so we're going to bytecompile.
+     * Emit instructions to push the result on the stack.
+     */
+
+    if (explicitResult) {
+	 CompileWord(envPtr, wordTokenPtr, interp, numWords-1);
+    } else {
+	/*
+	 * No explict result argument, so default result is empty string.
+	 */
+
+	PushLiteral(envPtr, "", 0);
+    }
+
+    /*
+     * Check for optimization: When [return] is in a proc, and there's no
+     * enclosing [catch], and there are no return options, then the INST_DONE
+     * instruction is equivalent, and may be more efficient.
+     */
+
+    if (numOptionWords == 0 && envPtr->procPtr != NULL) {
+	/*
+	 * We have default return options and we're in a proc ...
+	 */
+
+	int index = envPtr->exceptArrayNext - 1;
+	int enclosingCatch = 0;
+
+	while (index >= 0) {
+	    ExceptionRange range = envPtr->exceptArrayPtr[index];
+	    if ((range.type == CATCH_EXCEPTION_RANGE)
+		    && (range.catchOffset == -1)) {
+		enclosingCatch = 1;
+		break;
 	    }
-	    break;
+	    index--;
 	}
-	default: {
+	if (!enclosingCatch) {
 	    /*
-	     * Most complex return cases: everything else, including
-	     * [return -code error], etc.
+	     * ... and there is no enclosing catch. Issue the maximally
+	     * efficient exit instruction.
 	     */
-	    return TCL_OUT_LINE_COMPILE;
+
+	    Tcl_DecrRefCount(returnOpts);
+	    TclEmitOpcode(INST_DONE, envPtr);
+	    return TCL_OK;
 	}
     }
 
+    /* Optimize [return -level 0 $x]. */
+    Tcl_DictObjSize(NULL, returnOpts, &size);
+    if (size == 0 && level == 0 && code == TCL_OK) {
+	Tcl_DecrRefCount(returnOpts);
+	return TCL_OK;
+    }
+
     /*
-     * The INST_DONE opcode actually causes the branching out of the
-     * subroutine, and takes the top stack item as the return result
-     * (which is why we pushed the value above).
+     * Could not use the optimization, so we push the return options dict, and
+     * emit the INST_RETURN_IMM instruction with code and level as operands.
      */
-    TclEmitOpcode(INST_DONE, envPtr);
+
+    CompileReturnInternal(envPtr, INST_RETURN_IMM, code, level, returnOpts);
     return TCL_OK;
 }
+
+static void
+CompileReturnInternal(
+    CompileEnv *envPtr,
+    unsigned char op,
+    int code,
+    int level,
+    Tcl_Obj *returnOpts)
+{
+    TclEmitPush(TclAddLiteralObj(envPtr, returnOpts, NULL), envPtr);
+    TclEmitInstInt4(op, code, envPtr);
+    TclEmitInt4(level, envPtr);
+}
+
+void
+TclCompileSyntaxError(
+    Tcl_Interp *interp,
+    CompileEnv *envPtr)
+{
+    Tcl_Obj *msg = Tcl_GetObjResult(interp);
+    int numBytes;
+    const char *bytes = TclGetStringFromObj(msg, &numBytes);
+
+    TclEmitPush(TclRegisterNewLiteral(envPtr, bytes, numBytes), envPtr);
+    CompileReturnInternal(envPtr, INST_SYNTAX, TCL_ERROR, 0,
+	    Tcl_GetReturnOptions(interp, TCL_ERROR));
+}
 
 /*
  *----------------------------------------------------------------------
@@ -2566,77 +3456,54 @@ TclCompileReturnCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "set" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is normally TCL_OK
- *	unless there was an error while parsing string. If an error occurs
- *	then the interpreter's result contains a standard error message. If
- *	compilation fails because the set command requires a second level of
- *	substitutions, TCL_OUT_LINE_COMPILE is returned indicating that the
- *	set command should be compiled "out of line" by emitting code to
- *	invoke its command procedure (Tcl_SetCmd) at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "set" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "set" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileSetCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileSetCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *varTokenPtr, *valueTokenPtr;
     int isAssignment, isScalar, simpleVarName, localIndex, numWords;
-    int code = TCL_OK;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     numWords = parsePtr->numWords;
     if ((numWords != 2) && (numWords != 3)) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"set varName ?newValue?\"", -1);
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
     isAssignment = (numWords == 3);
 
     /*
-     * Decide if we can use a frame slot for the var/array name or if we
-     * need to emit code to compute and push the name at runtime. We use a
-     * frame slot (entry in the array of local vars) if we are compiling a
-     * procedure body and if the name is simple text that does not include
-     * namespace qualifiers. 
+     * Decide if we can use a frame slot for the var/array name or if we need
+     * to emit code to compute and push the name at runtime. We use a frame
+     * slot (entry in the array of local vars) if we are compiling a procedure
+     * body and if the name is simple text that does not include namespace
+     * qualifiers.
      */
 
-    varTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
-
-    code = TclPushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
-	    &localIndex, &simpleVarName, &isScalar, 1);
-    if (code != TCL_OK) {
-	goto done;
-    }
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    PushVarNameWord(interp, varTokenPtr, envPtr, TCL_CREATE_VAR,
+		    &localIndex, &simpleVarName, &isScalar, 1);
 
     /*
      * If we are doing an assignment, push the new value.
      */
 
     if (isAssignment) {
-	valueTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-	if (valueTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    TclEmitPush(TclRegisterNewLiteral(envPtr, valueTokenPtr[1].start,
-		    valueTokenPtr[1].size), envPtr);
-	} else {
-	    SetLineInformation (2);
-	    code = TclCompileTokens(interp, valueTokenPtr+1,
-	            valueTokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
-	}
+	valueTokenPtr = TokenAfter(varTokenPtr);
+	CompileWord(envPtr, valueTokenPtr, interp, 2);
     }
 
     /*
@@ -2645,351 +3512,1158 @@ TclCompileSetCmd(interp, parsePtr, envPtr)
 
     if (simpleVarName) {
 	if (isScalar) {
-	    if (localIndex >= 0) {
-		if (localIndex <= 255) {
-		    TclEmitInstInt1((isAssignment?
-		            INST_STORE_SCALAR1 : INST_LOAD_SCALAR1),
-			    localIndex, envPtr);
-		} else {
-		    TclEmitInstInt4((isAssignment?
-			    INST_STORE_SCALAR4 : INST_LOAD_SCALAR4),
-			    localIndex, envPtr);
-		}
-	    } else {
+	    if (localIndex < 0) {
 		TclEmitOpcode((isAssignment?
-		        INST_STORE_SCALAR_STK : INST_LOAD_SCALAR_STK), envPtr);
+			INST_STORE_SCALAR_STK : INST_LOAD_SCALAR_STK), envPtr);
+	    } else if (localIndex <= 255) {
+		TclEmitInstInt1((isAssignment?
+			INST_STORE_SCALAR1 : INST_LOAD_SCALAR1),
+			localIndex, envPtr);
+	    } else {
+		TclEmitInstInt4((isAssignment?
+			INST_STORE_SCALAR4 : INST_LOAD_SCALAR4),
+			localIndex, envPtr);
 	    }
 	} else {
-	    if (localIndex >= 0) {
-		if (localIndex <= 255) {
-		    TclEmitInstInt1((isAssignment?
-		            INST_STORE_ARRAY1 : INST_LOAD_ARRAY1),
-			    localIndex, envPtr);
-		} else {
-		    TclEmitInstInt4((isAssignment?
-			    INST_STORE_ARRAY4 : INST_LOAD_ARRAY4),
-			    localIndex, envPtr);
-		}
-	    } else {
+	    if (localIndex < 0) {
 		TclEmitOpcode((isAssignment?
-		        INST_STORE_ARRAY_STK : INST_LOAD_ARRAY_STK), envPtr);
+			INST_STORE_ARRAY_STK : INST_LOAD_ARRAY_STK), envPtr);
+	    } else if (localIndex <= 255) {
+		TclEmitInstInt1((isAssignment?
+			INST_STORE_ARRAY1 : INST_LOAD_ARRAY1),
+			localIndex, envPtr);
+	    } else {
+		TclEmitInstInt4((isAssignment?
+			INST_STORE_ARRAY4 : INST_LOAD_ARRAY4),
+			localIndex, envPtr);
 	    }
 	}
     } else {
 	TclEmitOpcode((isAssignment? INST_STORE_STK : INST_LOAD_STK), envPtr);
     }
-	
-    done:
-    return code;
+
+    return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclCompileStringCmd --
+ * TclCompileStringCmpCmd --
  *
- *	Procedure called to compile the "string" command.
+ *	Procedure called to compile the simplest and most common form of the
+ *	"string compare" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if the
- *	compilation was successful.  If the command cannot be byte-compiled,
- *	TCL_OUT_LINE_COMPILE is returned.  If an error occurs then the
- *	interpreter's result contains an error message, and TCL_ERROR is
- *	returned.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "string" command
+ *	Instructions are added to envPtr to execute the "string compare"
+ *	command at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileStringCmpCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *tokenPtr;
+
+    /*
+     * We don't support any flags; the bytecode isn't that sophisticated.
+     */
+
+    if (parsePtr->numWords != 3) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Push the two operands onto the stack and then the test.
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 1);
+    tokenPtr = TokenAfter(tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 2);
+    TclEmitOpcode(INST_STR_CMP, envPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileStringEqualCmd --
+ *
+ *	Procedure called to compile the simplest and most common form of the
+ *	"string equal" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "string equal" command
  *	at runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileStringCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
-{
-    Tcl_Token *opTokenPtr, *varTokenPtr;
-    Tcl_Obj *opObj;
-    int index;
-    int code;
-    
-    static CONST char *options[] = {
-	"bytelength",	"compare",	"equal",	"first",
-	"index",	"is",		"last",		"length",
-	"map",		"match",	"range",	"repeat",
-	"replace",	"tolower",	"toupper",	"totitle",
-	"trim",		"trimleft",	"trimright",
-	"wordend",	"wordstart",	(char *) NULL
-    };
-    enum options {
-	STR_BYTELENGTH,	STR_COMPARE,	STR_EQUAL,	STR_FIRST,
-	STR_INDEX,	STR_IS,		STR_LAST,	STR_LENGTH,
-	STR_MAP,	STR_MATCH,	STR_RANGE,	STR_REPEAT,
-	STR_REPLACE,	STR_TOLOWER,	STR_TOUPPER,	STR_TOTITLE,
-	STR_TRIM,	STR_TRIMLEFT,	STR_TRIMRIGHT,
-	STR_WORDEND,	STR_WORDSTART
-    };	  
-
-    DefineLineInformation;
+TclCompileStringEqualCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *tokenPtr;
 
-    if (parsePtr->numWords < 2) {
-	/* Fail at run time, not in compilation */
-	return TCL_OUT_LINE_COMPILE;
+    /*
+     * We don't support any flags; the bytecode isn't that sophisticated.
+     */
+
+    if (parsePtr->numWords != 3) {
+	return TCL_ERROR;
     }
-    opTokenPtr = parsePtr->tokenPtr
-	+ (parsePtr->tokenPtr->numComponents + 1);
 
-    opObj = Tcl_NewStringObj(opTokenPtr->start, opTokenPtr->size);
-    if (Tcl_GetIndexFromObj(interp, opObj, options, "option", 0,
-	    &index) != TCL_OK) {
-	Tcl_DecrRefCount(opObj);
-	Tcl_ResetResult(interp);
-	return TCL_OUT_LINE_COMPILE;
-    }
-    Tcl_DecrRefCount(opObj);
-
-    varTokenPtr = opTokenPtr + (opTokenPtr->numComponents + 1);
-
-    switch ((enum options) index) {
-	case STR_BYTELENGTH:
-	case STR_FIRST:
-	case STR_IS:
-	case STR_LAST:
-	case STR_MAP:
-	case STR_RANGE:
-	case STR_REPEAT:
-	case STR_REPLACE:
-	case STR_TOLOWER:
-	case STR_TOUPPER:
-	case STR_TOTITLE:
-	case STR_TRIM:
-	case STR_TRIMLEFT:
-	case STR_TRIMRIGHT:
-	case STR_WORDEND:
-	case STR_WORDSTART:
+    /*
+     * Push the two operands onto the stack and then the test.
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 1);
+    tokenPtr = TokenAfter(tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 2);
+    TclEmitOpcode(INST_STR_EQ, envPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileStringIndexCmd --
+ *
+ *	Procedure called to compile the simplest and most common form of the
+ *	"string index" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "string index" command
+ *	at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileStringIndexCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *tokenPtr;
+
+    if (parsePtr->numWords != 3) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Push the two operands onto the stack and then the index operation.
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 1);
+    tokenPtr = TokenAfter(tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 2);
+    TclEmitOpcode(INST_STR_INDEX, envPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileStringMatchCmd --
+ *
+ *	Procedure called to compile the simplest and most common form of the
+ *	"string match" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "string match" command
+ *	at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileStringMatchCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *tokenPtr;
+    int i, length, exactMatch = 0, nocase = 0;
+    const char *str;
+
+    if (parsePtr->numWords < 3 || parsePtr->numWords > 4) {
+	return TCL_ERROR;
+    }
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+
+    /*
+     * Check if we have a -nocase flag.
+     */
+
+    if (parsePtr->numWords == 4) {
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    return TCL_ERROR;
+	}
+	str = tokenPtr[1].start;
+	length = tokenPtr[1].size;
+	if ((length <= 1) || strncmp(str, "-nocase", (size_t) length)) {
+	    /*
+	     * Fail at run time, not in compilation.
+	     */
+
+	    return TCL_ERROR;
+	}
+	nocase = 1;
+	tokenPtr = TokenAfter(tokenPtr);
+    }
+
+    /*
+     * Push the strings to match against each other.
+     */
+
+    for (i = 0; i < 2; i++) {
+	if (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
+	    str = tokenPtr[1].start;
+	    length = tokenPtr[1].size;
+	    if (!nocase && (i == 0)) {
+		/*
+		 * Trivial matches can be done by 'string equal'. If -nocase
+		 * was specified, we can't do this because INST_STR_EQ has no
+		 * support for nocase.
+		 */
+
+		Tcl_Obj *copy = Tcl_NewStringObj(str, length);
+
+		Tcl_IncrRefCount(copy);
+		exactMatch = TclMatchIsTrivial(TclGetString(copy));
+		TclDecrRefCount(copy);
+	    }
+	    PushLiteral(envPtr, str, length);
+	} else {
+	    SetLineInformation (i+1+nocase);
+	    CompileTokens(envPtr, tokenPtr, interp);
+	}
+	tokenPtr = TokenAfter(tokenPtr);
+    }
+
+    /*
+     * Push the matcher.
+     */
+
+    if (exactMatch) {
+	TclEmitOpcode(INST_STR_EQ, envPtr);
+    } else {
+	TclEmitInstInt1(INST_STR_MATCH, nocase, envPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileStringLenCmd --
+ *
+ *	Procedure called to compile the simplest and most common form of the
+ *	"string length" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "string length"
+ *	command at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileStringLenCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Token *tokenPtr;
+
+    if (parsePtr->numWords != 2) {
+	return TCL_ERROR;
+    }
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
+	/*
+	 * Here someone is asking for the length of a static string. Just push
+	 * the actual character (not byte) length.
+	 */
+
+	char buf[TCL_INTEGER_SPACE];
+	int len = Tcl_NumUtfChars(tokenPtr[1].start, tokenPtr[1].size);
+
+	len = sprintf(buf, "%d", len);
+	PushLiteral(envPtr, buf, len);
+    } else {
+	SetLineInformation (1);
+	CompileTokens(envPtr, tokenPtr, interp);
+	TclEmitOpcode(INST_STR_LEN, envPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileSwitchCmd --
+ *
+ *	Procedure called to compile the "switch" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for successful compile, or TCL_ERROR to defer
+ * 	evaluation to runtime (either when it is too complex to get the
+ * 	semantics right, or when we know for sure that it is an error but need
+ * 	the error to happen at the right time).
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "switch" command at
+ *	runtime.
+ *
+ * FIXME:
+ *	Stack depths are probably not calculated correctly.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileSwitchCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr;	/* Pointer to tokens in command. */
+    int numWords;		/* Number of words in command. */
+
+    Tcl_Token *valueTokenPtr;	/* Token for the value to switch on. */
+    enum {Switch_Exact, Switch_Glob, Switch_Regexp} mode;
+				/* What kind of switch are we doing? */
+
+    Tcl_Token *bodyTokenArray;	/* Array of real pattern list items. */
+    Tcl_Token **bodyToken;	/* Array of pointers to pattern list items. */
+    int *bodyLines;		/* Array of line numbers for body list
+				 * items. */
+    int** bodyNext;
+    int foundDefault;		/* Flag to indicate whether a "default" clause
+				 * is present. */
+
+    JumpFixup *fixupArray;	/* Array of forward-jump fixup records. */
+    int *fixupTargetArray;	/* Array of places for fixups to point at. */
+    int fixupCount;		/* Number of places to fix up. */
+    int contFixIndex;		/* Where the first of the jumps due to a group
+				 * of continuation bodies starts, or -1 if
+				 * there aren't any. */
+    int contFixCount;		/* Number of continuation bodies pointing to
+				 * the current (or next) real body. */
+
+    int savedStackDepth = envPtr->currStackDepth;
+    int noCase;			/* Has the -nocase flag been given? */
+    int foundMode = 0;		/* Have we seen a mode flag yet? */
+    int i, valueIndex;
+    DefineLineInformation;	/* TIP #280 */
+    int* clNext = envPtr->clNext;
+
+    /*
+     * Only handle the following versions:
+     *   switch         ?--? word {pattern body ...}
+     *   switch -exact  ?--? word {pattern body ...}
+     *   switch -glob   ?--? word {pattern body ...}
+     *   switch -regexp ?--? word {pattern body ...}
+     *   switch         --   word simpleWordPattern simpleWordBody ...
+     *   switch -exact  --   word simpleWordPattern simpleWordBody ...
+     *   switch -glob   --   word simpleWordPattern simpleWordBody ...
+     *   switch -regexp --   word simpleWordPattern simpleWordBody ...
+     * When the mode is -glob, can also handle a -nocase flag.
+     *
+     * First off, we don't care how the command's word was generated; we're
+     * compiling it anyway! So skip it...
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    valueIndex = 1;
+    numWords = parsePtr->numWords-1;
+
+    /*
+     * Check for options.
+     */
+
+    noCase = 0;
+    mode = Switch_Exact;
+    if (numWords == 2) {
+	/*
+	 * There's just the switch value and the bodies list. In that case, we
+	 * can skip all option parsing and move on to consider switch values
+	 * and the body list.
+	 */
+
+	goto finishedOptionParse;
+    }
+
+    /*
+     * There must be at least one option, --, because without that there is no
+     * way to statically avoid the problems you get from strings-to-be-matched
+     * that start with a - (the interpreted code falls apart if it encounters
+     * them, so we punt if we *might* encounter them as that is the easiest
+     * way of emulating the behaviour).
+     */
+
+    for (; numWords>=3 ; tokenPtr=TokenAfter(tokenPtr),numWords--) {
+	register unsigned size = tokenPtr[1].size;
+	register const char *chrs = tokenPtr[1].start;
+
+	/*
+	 * We only process literal options, and we assume that -e, -g and -n
+	 * are unique prefixes of -exact, -glob and -nocase respectively (true
+	 * at time of writing). Note that -exact and -glob may only be given
+	 * at most once or we bail out (error case).
+	 */
+
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD || size < 2) {
+	    return TCL_ERROR;
+	}
+
+	if ((size <= 6) && !memcmp(chrs, "-exact", size)) {
+	    if (foundMode) {
+		return TCL_ERROR;
+	    }
+	    mode = Switch_Exact;
+	    foundMode = 1;
+	    valueIndex++;
+	    continue;
+	} else if ((size <= 5) && !memcmp(chrs, "-glob", size)) {
+	    if (foundMode) {
+		return TCL_ERROR;
+	    }
+	    mode = Switch_Glob;
+	    foundMode = 1;
+	    valueIndex++;
+	    continue;
+	} else if ((size <= 7) && !memcmp(chrs, "-regexp", size)) {
+	    if (foundMode) {
+		return TCL_ERROR;
+	    }
+	    mode = Switch_Regexp;
+	    foundMode = 1;
+	    valueIndex++;
+	    continue;
+	} else if ((size <= 7) && !memcmp(chrs, "-nocase", size)) {
+	    noCase = 1;
+	    valueIndex++;
+	    continue;
+	} else if ((size == 2) && !memcmp(chrs, "--", 2)) {
+	    valueIndex++;
+	    break;
+	}
+
+	/*
+	 * The switch command has many flags we cannot compile at all (e.g.
+	 * all the RE-related ones) which we must have encountered. Either
+	 * that or we have run off the end. The action here is the same: punt
+	 * to interpreted version.
+	 */
+
+	return TCL_ERROR;
+    }
+    if (numWords < 3) {
+	return TCL_ERROR;
+    }
+    tokenPtr = TokenAfter(tokenPtr);
+    numWords--;
+    if (noCase && (mode == Switch_Exact)) {
+	/*
+	 * Can't compile this case; no opcode for case-insensitive equality!
+	 */
+
+	return TCL_ERROR;
+    }
+
+    /*
+     * The value to test against is going to always get pushed on the stack.
+     * But not yet; we need to verify that the rest of the command is
+     * compilable too.
+     */
+
+  finishedOptionParse:
+    valueTokenPtr = tokenPtr;
+    /* For valueIndex, see previous loop. */
+    tokenPtr = TokenAfter(tokenPtr);
+    numWords--;
+
+    /*
+     * Build an array of tokens for the matcher terms and script bodies. Note
+     * that in the case of the quoted bodies, this is tricky as we cannot use
+     * copies of the string from the input token for the generated tokens (it
+     * causes a crash during exception handling). When multiple tokens are
+     * available at this point, this is pretty easy.
+     */
+
+    if (numWords == 1) {
+	CONST char *bytes;
+	int maxLen, numBytes;
+	int bline;		/* TIP #280: line of the pattern/action list,
+				 * and start of list for when tracking the
+				 * location. This list comes immediately after
+				 * the value we switch on. */
+
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    return TCL_ERROR;
+	}
+	bytes = tokenPtr[1].start;
+	numBytes = tokenPtr[1].size;
+
+	/* Allocate enough space to work in. */
+	maxLen = TclMaxListLength(bytes, numBytes, NULL);
+	if (maxLen < 2) {
+	    return TCL_ERROR;
+	}
+	bodyTokenArray = (Tcl_Token *) ckalloc(sizeof(Tcl_Token) * maxLen);
+	bodyToken = (Tcl_Token **) ckalloc(sizeof(Tcl_Token *) * maxLen);
+	bodyLines = (int *) ckalloc(sizeof(int) * maxLen);
+	bodyNext  = (int **) ckalloc(sizeof(int*) * maxLen);
+
+	bline = mapPtr->loc[eclIndex].line[valueIndex+1];
+	numWords = 0;
+
+	while (numBytes > 0) {
+	    CONST char *prevBytes = bytes;
+	    int literal;
+
+	    if (TCL_OK != TclFindElement(NULL, bytes, numBytes,
+		    &(bodyTokenArray[numWords].start), &bytes,
+		    &(bodyTokenArray[numWords].size), &literal) || !literal) {
+		goto abort;
+	    }
+
+	    bodyTokenArray[numWords].type = TCL_TOKEN_TEXT;
+	    bodyTokenArray[numWords].numComponents = 0;
+	    bodyToken[numWords] = bodyTokenArray + numWords;
+
 	    /*
-	     * All other cases: compile out of line.
+	     * TIP #280: Now determine the line the list element starts on
+	     * (there is no need to do it earlier, due to the possibility of
+	     * aborting, see above).
 	     */
-	    return TCL_OUT_LINE_COMPILE;
 
-	case STR_COMPARE: 
-	case STR_EQUAL: {
-	    int i;
+	    TclAdvanceLines(&bline, prevBytes, bodyTokenArray[numWords].start);
+	    TclAdvanceContinuations (&bline, &clNext,
+		    bodyTokenArray[numWords].start - envPtr->source);
+	    bodyLines[numWords] = bline;
+	    bodyNext[numWords] = clNext;
+	    TclAdvanceLines(&bline, bodyTokenArray[numWords].start, bytes);
+	    TclAdvanceContinuations (&bline, &clNext, bytes - envPtr->source);
+
+	    numBytes -= (bytes - prevBytes);
+	    numWords++;
+	}
+	if (numWords % 2) {
+	abort:
+	    ckfree((char *) bodyToken);
+	    ckfree((char *) bodyTokenArray);
+	    ckfree((char *) bodyLines);
+	    ckfree((char *) bodyNext);
+	    return TCL_ERROR;
+	}
+    } else if (numWords % 2 || numWords == 0) {
+	/*
+	 * Odd number of words (>1) available, or no words at all available.
+	 * Both are error cases, so punt and let the interpreted-version
+	 * generate the error message. Note that the second case probably
+	 * should get caught earlier, but it's easy to check here again anyway
+	 * because it'd cause a nasty crash otherwise.
+	 */
+
+	return TCL_ERROR;
+    } else {
+	/*
+	 * Multi-word definition of patterns & actions.
+	 */
+
+	bodyToken = (Tcl_Token **) ckalloc(sizeof(Tcl_Token *) * numWords);
+	bodyLines = (int *) ckalloc(sizeof(int) * numWords);
+	bodyNext  = (int **) ckalloc(sizeof(int*) * numWords);
+	bodyTokenArray = NULL;
+	for (i=0 ; i<numWords ; i++) {
 	    /*
-	     * If there are any flags to the command, we can't byte compile it
-	     * because the INST_STR_EQ bytecode doesn't support flags.
+	     * We only handle the very simplest case. Anything more complex is
+	     * a good reason to go to the interpreted case anyway due to
+	     * traces, etc.
 	     */
 
-	    if (parsePtr->numWords != 4) {
-		return TCL_OUT_LINE_COMPILE;
+	    if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+		ckfree((char *) bodyToken);
+		ckfree((char *) bodyLines);
+		ckfree((char *) bodyNext);
+		return TCL_ERROR;
 	    }
+	    bodyToken[i] = tokenPtr+1;
 
 	    /*
-	     * Push the two operands onto the stack.
+	     * TIP #280: Copy line information from regular cmd info.
 	     */
 
-	    for (i = 0; i < 2; i++) {
-		if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-		    TclEmitPush(TclRegisterNewLiteral(envPtr,
-			    varTokenPtr[1].start, varTokenPtr[1].size), envPtr);
-		} else {
-		    SetLineInformation (i);
-		    code = TclCompileTokens(interp, varTokenPtr+1,
-			    varTokenPtr->numComponents, envPtr);
-		    if (code != TCL_OK) {
-			return code;
-		    }
-		}
-		varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-	    }
+	    bodyLines[i] = mapPtr->loc[eclIndex].line[valueIndex+1+i];
+	    bodyNext[i] = mapPtr->loc[eclIndex].next[valueIndex+1+i];
+	    tokenPtr = TokenAfter(tokenPtr);
+	}
+    }
 
-	    TclEmitOpcode(((((enum options) index) == STR_COMPARE) ?
-		    INST_STR_CMP : INST_STR_EQ), envPtr);
-	    return TCL_OK;
+    /*
+     * Fall back to interpreted if the last body is a continuation (it's
+     * illegal, but this makes the error happen at the right time).
+     */
+
+    if (bodyToken[numWords-1]->size == 1 &&
+	    bodyToken[numWords-1]->start[0] == '-') {
+	ckfree((char *) bodyToken);
+	ckfree((char *) bodyLines);
+	ckfree((char *) bodyNext);
+	if (bodyTokenArray != NULL) {
+	    ckfree((char *) bodyTokenArray);
 	}
-	case STR_INDEX: {
-	    int i;
+	return TCL_ERROR;
+    }
 
-	    if (parsePtr->numWords != 4) {
-		/* Fail at run time, not in compilation */
-		return TCL_OUT_LINE_COMPILE;
-	    }
+    /*
+     * Now we commit to generating code; the parsing stage per se is done.
+     * First, we push the value we're matching against on the stack.
+     */
+
+    SetLineInformation (valueIndex);
+    CompileTokens(envPtr, valueTokenPtr, interp);
+
+    /*
+     * Check if we can generate a jump table, since if so that's faster than
+     * doing an explicit compare with each body. Note that we're definitely
+     * over-conservative with determining whether we can do the jump table,
+     * but it handles the most common case well enough.
+     */
+
+    if (mode == Switch_Exact) {
+	JumptableInfo *jtPtr;
+	int infoIndex, isNew, *finalFixups, numRealBodies = 0, jumpLocation;
+	int mustGenerate, jumpToDefault;
+	Tcl_DString buffer;
+	Tcl_HashEntry *hPtr;
 
+	/*
+	 * Compile the switch by using a jump table, which is basically a
+	 * hashtable that maps from literal values to match against to the
+	 * offset (relative to the INST_JUMP_TABLE instruction) to jump to.
+	 * The jump table itself is independent of any invokation of the
+	 * bytecode, and as such is stored in an auxData block.
+	 *
+	 * Start by allocating the jump table itself, plus some workspace.
+	 */
+
+	jtPtr = (JumptableInfo *) ckalloc(sizeof(JumptableInfo));
+	Tcl_InitHashTable(&jtPtr->hashTable, TCL_STRING_KEYS);
+	infoIndex = TclCreateAuxData(jtPtr, &tclJumptableInfoType, envPtr);
+	finalFixups = (int *) ckalloc(sizeof(int) * (numWords/2));
+	foundDefault = 0;
+	mustGenerate = 1;
+
+	/*
+	 * Next, issue the instruction to do the jump, together with what we
+	 * want to do if things do not work out (jump to either the default
+	 * clause or the "default" default, which just sets the result to
+	 * empty). Note that we will come back and rewrite the jump's offset
+	 * parameter when we know what it should be, and that all jumps we
+	 * issue are of the wide kind because that makes the code much easier
+	 * to debug!
+	 */
+
+	jumpLocation = CurrentOffset(envPtr);
+	TclEmitInstInt4(INST_JUMP_TABLE, infoIndex, envPtr);
+	jumpToDefault = CurrentOffset(envPtr);
+	TclEmitInstInt4(INST_JUMP4, 0, envPtr);
+
+	for (i=0 ; i<numWords ; i+=2) {
 	    /*
-	     * Push the two operands onto the stack.
+	     * For each arm, we must first work out what to do with the match
+	     * term.
 	     */
 
-	    for (i = 0; i < 2; i++) {
-		if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-		    TclEmitPush(TclRegisterNewLiteral(envPtr,
-			    varTokenPtr[1].start, varTokenPtr[1].size), envPtr);
-		} else {
-		    SetLineInformation (i);
-		    code = TclCompileTokens(interp, varTokenPtr+1,
-			    varTokenPtr->numComponents, envPtr);
-		    if (code != TCL_OK) {
-			return code;
-		    }
+	    if (i!=numWords-2 || bodyToken[numWords-2]->size != 7 ||
+		    memcmp(bodyToken[numWords-2]->start, "default", 7)) {
+		/*
+		 * This is not a default clause, so insert the current
+		 * location as a target in the jump table (assuming it isn't
+		 * already there, which would indicate that this clause is
+		 * probably masked by an earlier one). Note that we use a
+		 * Tcl_DString here simply because the hash API does not let
+		 * us specify the string length.
+		 */
+
+		Tcl_DStringInit(&buffer);
+		Tcl_DStringAppend(&buffer, bodyToken[i]->start,
+			bodyToken[i]->size);
+		hPtr = Tcl_CreateHashEntry(&jtPtr->hashTable,
+			Tcl_DStringValue(&buffer), &isNew);
+		if (isNew) {
+		    /*
+		     * First time we've encountered this match clause, so it
+		     * must point to here.
+		     */
+
+		    Tcl_SetHashValue(hPtr, (ClientData)
+			    (CurrentOffset(envPtr) - jumpLocation));
 		}
-		varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
+		Tcl_DStringFree(&buffer);
+	    } else {
+		/*
+		 * This is a default clause, so patch up the fallthrough from
+		 * the INST_JUMP_TABLE instruction to here.
+		 */
+
+		foundDefault = 1;
+		isNew = 1;
+		TclStoreInt4AtPtr(CurrentOffset(envPtr)-jumpToDefault,
+			envPtr->codeStart+jumpToDefault+1);
 	    }
 
-	    TclEmitOpcode(INST_STR_INDEX, envPtr);
-	    return TCL_OK;
-	}
-	case STR_LENGTH: {
-	    if (parsePtr->numWords != 3) {
-		/* Fail at run time, not in compilation */
-		return TCL_OUT_LINE_COMPILE;
+	    /*
+	     * Now, for each arm we must deal with the body of the clause.
+	     *
+	     * If this is a continuation body (never true of a final clause,
+	     * whether default or not) we're done because the next jump target
+	     * will also point here, so we advance to the next clause.
+	     */
+
+	    if (bodyToken[i+1]->size == 1 && bodyToken[i+1]->start[0] == '-') {
+		mustGenerate = 1;
+		continue;
+	    }
+
+	    /*
+	     * Also skip this arm if its only match clause is masked. (We
+	     * could probably be more aggressive about this, but that would be
+	     * much more difficult to get right.)
+	     */
+
+	    if (!isNew && !mustGenerate) {
+		continue;
 	    }
+	    mustGenerate = 0;
+
+	    /*
+	     * Compile the body of the arm.
+	     */
+
+	    envPtr->line = bodyLines[i+1];	/* TIP #280 */
+	    envPtr->clNext = bodyNext[i+1];	/* TIP #280 */
+	    TclCompileCmdWord(interp, bodyToken[i+1], 1, envPtr);
+
+	    /*
+	     * Compile a jump in to the end of the command if this body is
+	     * anything other than a user-supplied default arm (to either skip
+	     * over the remaining bodies or the code that generates an empty
+	     * result).
+	     */
+
+	    if (i+2 < numWords || !foundDefault) {
+		finalFixups[numRealBodies++] = CurrentOffset(envPtr);
 
-	    if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
 		/*
-		 * Here someone is asking for the length of a static string.
-		 * Just push the actual character (not byte) length.
+		 * Easier by far to issue this jump as a fixed-width jump.
+		 * Otherwise we'd need to do a lot more (and more awkward)
+		 * rewriting when we fixed this all up.
 		 */
-		char buf[TCL_INTEGER_SPACE];
-		int len = Tcl_NumUtfChars(varTokenPtr[1].start,
-			varTokenPtr[1].size);
-		len = sprintf(buf, "%d", len);
-		TclEmitPush(TclRegisterNewLiteral(envPtr, buf, len), envPtr);
-		return TCL_OK;
-	    } else {
-		SetLineInformation (2);
-		code = TclCompileTokens(interp, varTokenPtr+1,
-			varTokenPtr->numComponents, envPtr);
-		if (code != TCL_OK) {
-		    return code;
-		}
+
+		TclEmitInstInt4(INST_JUMP4, 0, envPtr);
 	    }
-	    TclEmitOpcode(INST_STR_LEN, envPtr);
-	    return TCL_OK;
 	}
-	case STR_MATCH: {
-	    int i, length, exactMatch = 0, nocase = 0;
-	    CONST char *str;
 
-	    if (parsePtr->numWords < 4 || parsePtr->numWords > 5) {
-		/* Fail at run time, not in compilation */
-		return TCL_OUT_LINE_COMPILE;
-	    }
+	/*
+	 * We're at the end. If we've not already done so through the
+	 * processing of a user-supplied default clause, add in a "default"
+	 * default clause now.
+	 */
 
-	    if (parsePtr->numWords == 5) {
-		if (varTokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-		    return TCL_OUT_LINE_COMPILE;
-		}
-		str    = varTokenPtr[1].start;
-		length = varTokenPtr[1].size;
-		if ((length > 1) &&
-			strncmp(str, "-nocase", (size_t) length) == 0) {
-		    nocase = 1;
-		} else {
-		    /* Fail at run time, not in compilation */
-		    return TCL_OUT_LINE_COMPILE;
-		}
-		varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
-	    }
+	if (!foundDefault) {
+	    TclStoreInt4AtPtr(CurrentOffset(envPtr)-jumpToDefault,
+		    envPtr->codeStart+jumpToDefault+1);
+	    PushLiteral(envPtr, "", 0);
+	}
 
-	    for (i = 0; i < 2; i++) {
-		if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-		    str = varTokenPtr[1].start;
-		    length = varTokenPtr[1].size;
-		    if (!nocase && (i == 0)) {
+	/*
+	 * No more instructions to be issued; everything that needs to jump to
+	 * the end of the command is fixed up at this point.
+	 */
+
+	for (i=0 ; i<numRealBodies ; i++) {
+	    TclStoreInt4AtPtr(CurrentOffset(envPtr)-finalFixups[i],
+		    envPtr->codeStart+finalFixups[i]+1);
+	}
+
+	/*
+	 * Clean up all our temporary space and return.
+	 */
+
+	ckfree((char *) finalFixups);
+	ckfree((char *) bodyToken);
+	ckfree((char *) bodyLines);
+	ckfree((char *) bodyNext);
+	if (bodyTokenArray != NULL) {
+	    ckfree((char *) bodyTokenArray);
+	}
+	return TCL_OK;
+    }
+
+    /*
+     * Generate a test for each arm.
+     */
+
+    contFixIndex = -1;
+    contFixCount = 0;
+    fixupArray = (JumpFixup *) ckalloc(sizeof(JumpFixup) * numWords);
+    fixupTargetArray = (int *) ckalloc(sizeof(int) * numWords);
+    memset(fixupTargetArray, 0, numWords * sizeof(int));
+    fixupCount = 0;
+    foundDefault = 0;
+    for (i=0 ; i<numWords ; i+=2) {
+	int nextArmFixupIndex = -1;
+
+	envPtr->currStackDepth = savedStackDepth + 1;
+	if (i!=numWords-2 || bodyToken[numWords-2]->size != 7 ||
+		memcmp(bodyToken[numWords-2]->start, "default", 7)) {
+	    /*
+	     * Generate the test for the arm.
+	     */
+
+	    switch (mode) {
+	    case Switch_Exact:
+		TclEmitOpcode(INST_DUP, envPtr);
+		TclCompileTokens(interp, bodyToken[i], 1, envPtr);
+		TclEmitOpcode(INST_STR_EQ, envPtr);
+		break;
+	    case Switch_Glob:
+		TclCompileTokens(interp, bodyToken[i], 1, envPtr);
+		TclEmitInstInt4(INST_OVER, 1, envPtr);
+		TclEmitInstInt1(INST_STR_MATCH, noCase, envPtr);
+		break;
+	    case Switch_Regexp: {
+		int simple = 0, exact = 0;
+
+		/*
+		 * Keep in sync with TclCompileRegexpCmd.
+		 */
+
+		if (bodyToken[i]->type == TCL_TOKEN_TEXT) {
+		    Tcl_DString ds;
+
+		    if (bodyToken[i]->size == 0) {
 			/*
-			 * On the first (pattern) arg, check to see if any
-			 * glob special characters are in the word '*[]?\\'.
-			 * If not, this is the same as 'string equal'.  We
-			 * can use strpbrk here because the glob chars are all
-			 * in the ascii-7 range.  If -nocase was specified,
-			 * we can't do this because INST_STR_EQ has no support
-			 * for nocase.
+			 * The semantics of regexps are that they always match
+			 * when the RE == "".
 			 */
-			Tcl_Obj *copy = Tcl_NewStringObj(str, length);
-			Tcl_IncrRefCount(copy);
-			exactMatch = (strpbrk(Tcl_GetString(copy),
-				"*[]?\\") == NULL);
-			Tcl_DecrRefCount(copy);
+
+			PushLiteral(envPtr, "1", 1);
+			break;
 		    }
-		    TclEmitPush(
-			    TclRegisterNewLiteral(envPtr, str, length), envPtr);
-		} else {
-		    SetLineInformation (i);
-		    code = TclCompileTokens(interp, varTokenPtr+1,
-			    varTokenPtr->numComponents, envPtr);
-		    if (code != TCL_OK) {
-			return code;
+
+		    /*
+		     * Attempt to convert pattern to glob. If successful, push
+		     * the converted pattern.
+		     */
+
+		    if (TclReToGlob(NULL, bodyToken[i]->start,
+			    bodyToken[i]->size, &ds, &exact) == TCL_OK) {
+			simple = 1;
+			PushLiteral(envPtr, Tcl_DStringValue(&ds),
+				Tcl_DStringLength(&ds));
+			Tcl_DStringFree(&ds);
+		    }
+		}
+		if (!simple) {
+		    TclCompileTokens(interp, bodyToken[i], 1, envPtr);
+		}
+
+		TclEmitInstInt4(INST_OVER, 1, envPtr);
+		if (simple) {
+		    if (exact && !noCase) {
+			TclEmitOpcode(INST_STR_EQ, envPtr);
+		    } else {
+			TclEmitInstInt1(INST_STR_MATCH, noCase, envPtr);
 		    }
+		} else {
+		    /*
+		     * Pass correct RE compile flags. We use only Int1
+		     * (8-bit), but that handles all the flags we want to
+		     * pass. Don't use TCL_REG_NOSUB as we may have backrefs
+		     * or capture vars.
+		     */
+
+		    int cflags = TCL_REG_ADVANCED
+			    | (noCase ? TCL_REG_NOCASE : 0);
+
+		    TclEmitInstInt1(INST_REGEXP, cflags, envPtr);
 		}
-		varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
+		break;
+	    }
+	    default:
+		Tcl_Panic("unknown switch mode: %d", mode);
 	    }
 
-	    if (exactMatch) {
-		TclEmitOpcode(INST_STR_EQ, envPtr);
-	    } else {
-		TclEmitInstInt1(INST_STR_MATCH, nocase, envPtr);
+	    /*
+	     * In a fall-through case, we will jump on _true_ to the place
+	     * where the body starts (generated later, with guarantee of this
+	     * ensured earlier; the final body is never a fall-through).
+	     */
+
+	    if (bodyToken[i+1]->size==1 && bodyToken[i+1]->start[0]=='-') {
+		if (contFixIndex == -1) {
+		    contFixIndex = fixupCount;
+		    contFixCount = 0;
+		}
+		TclEmitForwardJump(envPtr, TCL_TRUE_JUMP,
+			fixupArray+contFixIndex+contFixCount);
+		fixupCount++;
+		contFixCount++;
+		continue;
 	    }
-	    return TCL_OK;
+
+	    TclEmitForwardJump(envPtr, TCL_FALSE_JUMP, fixupArray+fixupCount);
+	    nextArmFixupIndex = fixupCount;
+	    fixupCount++;
+	} else {
+	    /*
+	     * Got a default clause; set a flag to inhibit the generation of
+	     * the jump after the body and the cleanup of the intermediate
+	     * value that we are switching against.
+	     *
+	     * Note that default clauses (which are always terminal clauses)
+	     * cannot be fall-through clauses as well, since the last clause
+	     * is never a fall-through clause (which we have already
+	     * verified).
+	     */
+
+	    foundDefault = 1;
+	}
+
+	/*
+	 * Generate the body for the arm. This is guaranteed not to be a
+	 * fall-through case, but it might have preceding fall-through cases,
+	 * so we must process those first.
+	 */
+
+	if (contFixIndex != -1) {
+	    int j;
+
+	    for (j=0 ; j<contFixCount ; j++) {
+		fixupTargetArray[contFixIndex+j] = CurrentOffset(envPtr);
+	    }
+	    contFixIndex = -1;
+	}
+
+	/*
+	 * Now do the actual compilation. Note that we do not use CompileBody
+	 * because we may have synthesized the tokens in a non-standard
+	 * pattern.
+	 */
+
+	TclEmitOpcode(INST_POP, envPtr);
+	envPtr->currStackDepth = savedStackDepth + 1;
+	envPtr->line = bodyLines[i+1];		/* TIP #280 */
+	envPtr->clNext = bodyNext[i+1];		/* TIP #280 */
+	TclCompileCmdWord(interp, bodyToken[i+1], 1, envPtr);
+
+	if (!foundDefault) {
+	    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP,
+		    fixupArray+fixupCount);
+	    fixupCount++;
+	    fixupTargetArray[nextArmFixupIndex] = CurrentOffset(envPtr);
+	}
+    }
+
+    /*
+     * Clean up all our temporary space and return.
+     */
+
+    ckfree((char *) bodyToken);
+    ckfree((char *) bodyLines);
+    ckfree((char *) bodyNext);
+    if (bodyTokenArray != NULL) {
+	ckfree((char *) bodyTokenArray);
+    }
+
+    /*
+     * Discard the value we are matching against unless we've had a default
+     * clause (in which case it will already be gone due to the code at the
+     * start of processing an arm, guaranteed) and make the result of the
+     * command an empty string.
+     */
+
+    if (!foundDefault) {
+	TclEmitOpcode(INST_POP, envPtr);
+	PushLiteral(envPtr, "", 0);
+    }
+
+    /*
+     * Do jump fixups for arms that were executed. First, fill in the jumps of
+     * all jumps that don't point elsewhere to point to here.
+     */
+
+    for (i=0 ; i<fixupCount ; i++) {
+	if (fixupTargetArray[i] == 0) {
+	    fixupTargetArray[i] = envPtr->codeNext-envPtr->codeStart;
 	}
     }
 
+    /*
+     * Now scan backwards over all the jumps (all of which are forward jumps)
+     * doing each one. When we do one and there is a size changes, we must
+     * scan back over all the previous ones and see if they need adjusting
+     * before proceeding with further jump fixups (the interleaved nature of
+     * all the jumps makes this impossible to do without nested loops).
+     */
+
+    for (i=fixupCount-1 ; i>=0 ; i--) {
+	if (TclFixupForwardJump(envPtr, &fixupArray[i],
+		fixupTargetArray[i] - fixupArray[i].codeOffset, 127)) {
+	    int j;
+
+	    for (j=i-1 ; j>=0 ; j--) {
+		if (fixupTargetArray[j] > fixupArray[i].codeOffset) {
+		    fixupTargetArray[j] += 3;
+		}
+	    }
+	}
+    }
+    ckfree((char *) fixupArray);
+    ckfree((char *) fixupTargetArray);
+
+    envPtr->currStackDepth = savedStackDepth + 1;
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclCompileVariableCmd --
+ * DupJumptableInfo, FreeJumptableInfo --
  *
- *	Procedure called to reserve the local variables for the 
- *      "variable" command. The command itself is *not* compiled.
+ *	Functions to duplicate, release and print a jump-table created for use
+ *	with the INST_JUMP_TABLE instruction.
  *
  * Results:
- *      Always returns TCL_OUT_LINE_COMPILE.
+ *	DupJumptableInfo: a copy of the jump-table
+ *	FreeJumptableInfo: none
+ *	PrintJumptableInfo: none
  *
  * Side effects:
- *      Indexed local variables are added to the environment.
+ *	DupJumptableInfo: allocates memory
+ *	FreeJumptableInfo: releases memory
+ *	PrintJumptableInfo: none
  *
  *----------------------------------------------------------------------
  */
-int
-TclCompileVariableCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+
+static ClientData
+DupJumptableInfo(
+    ClientData clientData)
 {
-    Tcl_Token *varTokenPtr;
-    int i, numWords;
-    CONST char *varName, *tail;
-    
-    if (envPtr->procPtr == NULL) {
-	return TCL_OUT_LINE_COMPILE;
+    JumptableInfo *jtPtr = clientData;
+    JumptableInfo *newJtPtr = (JumptableInfo *)
+	    ckalloc(sizeof(JumptableInfo));
+    Tcl_HashEntry *hPtr, *newHPtr;
+    Tcl_HashSearch search;
+    int isNew;
+
+    Tcl_InitHashTable(&newJtPtr->hashTable, TCL_STRING_KEYS);
+    hPtr = Tcl_FirstHashEntry(&jtPtr->hashTable, &search);
+    while (hPtr != NULL) {
+	newHPtr = Tcl_CreateHashEntry(&newJtPtr->hashTable,
+		Tcl_GetHashKey(&jtPtr->hashTable, hPtr), &isNew);
+	Tcl_SetHashValue(newHPtr, Tcl_GetHashValue(hPtr));
     }
+    return newJtPtr;
+}
 
-    numWords = parsePtr->numWords;
-    
-    varTokenPtr = parsePtr->tokenPtr
-	+ (parsePtr->tokenPtr->numComponents + 1);
-    for (i = 1; i < numWords; i += 2) {
-	if (varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
-	    varName = varTokenPtr[1].start;
-	    tail = varName + varTokenPtr[1].size - 1;
-	    if ((*tail == ')') || (tail < varName)) continue;
-	    while ((tail > varName) && ((*tail != ':') || (*(tail-1) != ':'))) {
-		tail--;
-	    }
-	    if ((*tail == ':') && (tail > varName)) {
-		tail++;
+static void
+FreeJumptableInfo(
+    ClientData clientData)
+{
+    JumptableInfo *jtPtr = clientData;
+
+    Tcl_DeleteHashTable(&jtPtr->hashTable);
+    ckfree((char *) jtPtr);
+}
+
+static void
+PrintJumptableInfo(
+    ClientData clientData,
+    Tcl_Obj *appendObj,
+    ByteCode *codePtr,
+    unsigned int pcOffset)
+{
+    register JumptableInfo *jtPtr = clientData;
+    Tcl_HashEntry *hPtr;
+    Tcl_HashSearch search;
+    const char *keyPtr;
+    int offset, i = 0;
+
+    hPtr = Tcl_FirstHashEntry(&jtPtr->hashTable, &search);
+    for (; hPtr ; hPtr = Tcl_NextHashEntry(&search)) {
+	keyPtr = Tcl_GetHashKey(&jtPtr->hashTable, hPtr);
+	offset = PTR2INT(Tcl_GetHashValue(hPtr));
+
+	if (i++) {
+	    Tcl_AppendToObj(appendObj, ", ", -1);
+	    if (i%4==0) {
+		Tcl_AppendToObj(appendObj, "\n\t\t", -1);
 	    }
-	    (void) TclFindCompiledLocal(tail, (tail-varName+1),
-		    /*create*/ 1, /*flags*/ 0, envPtr->procPtr);
-	    varTokenPtr = varTokenPtr + (varTokenPtr->numComponents + 1);
 	}
+	Tcl_AppendPrintfToObj(appendObj, "\"%s\"->pc %d",
+		keyPtr, pcOffset + offset);
     }
-    return TCL_OUT_LINE_COMPILE;
 }
 
 /*
@@ -3000,99 +4674,87 @@ TclCompileVariableCmd(interp, parsePtr, envPtr)
  *	Procedure called to compile the "while" command.
  *
  * Results:
- *	The return value is a standard Tcl result, which is TCL_OK if
- *	compilation was successful. If an error occurs then the
- *	interpreter's result contains a standard error message and TCL_ERROR
- *	is returned. If compilation failed because the command is too
- *	complex for TclCompileWhileCmd, TCL_OUT_LINE_COMPILE is returned
- *	indicating that the while command should be compiled "out of line"
- *	by emitting code to invoke its command procedure at runtime.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "while" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "while" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCompileWhileCmd(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Points to a parse structure for the
-				 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+TclCompileWhileCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Tcl_Token *testTokenPtr, *bodyTokenPtr;
     JumpFixup jumpEvalCondFixup;
-    int testCodeOffset, bodyCodeOffset, jumpDist;
-    int range, code;
-    char buffer[32 + TCL_INTEGER_SPACE];
+    int testCodeOffset, bodyCodeOffset, jumpDist, range, code, boolVal;
     int savedStackDepth = envPtr->currStackDepth;
-    int loopMayEnd = 1;         /* This is set to 0 if it is recognized as
-				 * an infinite loop. */
+    int loopMayEnd = 1;		/* This is set to 0 if it is recognized as an
+				 * infinite loop. */
     Tcl_Obj *boolObj;
-    int boolVal;
-
-    DefineLineInformation;
+    DefineLineInformation;	/* TIP #280 */
 
     if (parsePtr->numWords != 3) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	        "wrong # args: should be \"while test command\"", -1);
 	return TCL_ERROR;
     }
 
     /*
-     * If the test expression requires substitutions, don't compile the
-     * while command inline. E.g., the expression might cause the loop to
-     * never execute or execute forever, as in "while "$x < 5" {}".
+     * If the test expression requires substitutions, don't compile the while
+     * command inline. E.g., the expression might cause the loop to never
+     * execute or execute forever, as in "while "$x < 5" {}".
      *
-     * Bail out also if the body expression requires substitutions
-     * in order to insure correct behaviour [Bug 219166]
+     * Bail out also if the body expression requires substitutions in order to
+     * insure correct behaviour [Bug 219166]
      */
 
-    testTokenPtr = parsePtr->tokenPtr
-	    + (parsePtr->tokenPtr->numComponents + 1);
-    bodyTokenPtr = testTokenPtr + (testTokenPtr->numComponents + 1);
+    testTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    bodyTokenPtr = TokenAfter(testTokenPtr);
+
     if ((testTokenPtr->type != TCL_TOKEN_SIMPLE_WORD)
 	    || (bodyTokenPtr->type != TCL_TOKEN_SIMPLE_WORD)) {
-	return TCL_OUT_LINE_COMPILE;
+	return TCL_ERROR;
     }
 
     /*
-     * Find out if the condition is a constant. 
+     * Find out if the condition is a constant.
      */
 
     boolObj = Tcl_NewStringObj(testTokenPtr[1].start, testTokenPtr[1].size);
     Tcl_IncrRefCount(boolObj);
     code = Tcl_GetBooleanFromObj(NULL, boolObj, &boolVal);
-    Tcl_DecrRefCount(boolObj);
+    TclDecrRefCount(boolObj);
     if (code == TCL_OK) {
 	if (boolVal) {
 	    /*
-	     * it is an infinite loop 
+	     * It is an infinite loop; flag it so that we generate a more
+	     * efficient body.
 	     */
 
-	    loopMayEnd = 0;  
+	    loopMayEnd = 0;
 	} else {
 	    /*
-	     * This is an empty loop: "while 0 {...}" or such.
-	     * Compile no bytecodes.
+	     * This is an empty loop: "while 0 {...}" or such. Compile no
+	     * bytecodes.
 	     */
 
 	    goto pushResult;
 	}
     }
 
-    /* 
+    /*
      * Create a ExceptionRange record for the loop body. This is used to
      * implement break and continue.
      */
 
-    envPtr->exceptDepth++;
-    envPtr->maxExceptDepth =
-	TclMax(envPtr->exceptDepth, envPtr->maxExceptDepth);
-    range = TclCreateExceptRange(LOOP_EXCEPTION_RANGE, envPtr);
+    range = DeclareExceptionRange(envPtr, LOOP_EXCEPTION_RANGE);
 
     /*
      * Jump to the evaluation of the condition. This code uses the "loop
@@ -3110,31 +4772,26 @@ TclCompileWhileCmd(interp, parsePtr, envPtr)
 
     if (loopMayEnd) {
 	TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP, &jumpEvalCondFixup);
-	testCodeOffset = 0; /* avoid compiler warning */
+	testCodeOffset = 0;	/* Avoid compiler warning. */
     } else {
-	testCodeOffset = (envPtr->codeNext - envPtr->codeStart);
+	/*
+	 * Make sure that the first command in the body is preceded by an
+	 * INST_START_CMD, and hence counted properly. [Bug 1752146]
+	 */
+
+	envPtr->atCmdStart = 0;
+	testCodeOffset = CurrentOffset(envPtr);
     }
-    
 
     /*
      * Compile the loop body.
      */
 
     SetLineInformation (2);
-    bodyCodeOffset = (envPtr->codeNext - envPtr->codeStart);
-    code = TclCompileCmdWord(interp, bodyTokenPtr+1,
-	    bodyTokenPtr->numComponents, envPtr);
+    bodyCodeOffset = ExceptionRangeStarts(envPtr, range);
+    CompileBody(envPtr, bodyTokenPtr, interp);
+    ExceptionRangeEnds(envPtr, range);
     envPtr->currStackDepth = savedStackDepth + 1;
-    if (code != TCL_OK) {
-	if (code == TCL_ERROR) {
-	    sprintf(buffer, "\n    (\"while\" body line %d)",
-		    interp->errorLine);
-            Tcl_AddObjErrorInfo(interp, buffer, -1);
-        }
-	goto error;
-    }
-    envPtr->exceptArrayPtr[range].numCodeBytes =
-	    (envPtr->codeNext - envPtr->codeStart) - bodyCodeOffset;
     TclEmitOpcode(INST_POP, envPtr);
 
     /*
@@ -3143,7 +4800,7 @@ TclCompileWhileCmd(interp, parsePtr, envPtr)
      */
 
     if (loopMayEnd) {
-	testCodeOffset = (envPtr->codeNext - envPtr->codeStart);
+	testCodeOffset = CurrentOffset(envPtr);
 	jumpDist = testCodeOffset - jumpEvalCondFixup.codeOffset;
 	if (TclFixupForwardJump(envPtr, &jumpEvalCondFixup, jumpDist, 127)) {
 	    bodyCodeOffset += 3;
@@ -3151,113 +4808,86 @@ TclCompileWhileCmd(interp, parsePtr, envPtr)
 	}
 	envPtr->currStackDepth = savedStackDepth;
 	SetLineInformation (1);
-	code = TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
-	if (code != TCL_OK) {
-	    if (code == TCL_ERROR) {
-		Tcl_AddObjErrorInfo(interp,
-				    "\n    (\"while\" test expression)", -1);
-	    }
-	    goto error;
-	}
+	TclCompileExprWords(interp, testTokenPtr, 1, envPtr);
 	envPtr->currStackDepth = savedStackDepth + 1;
-    
-	jumpDist = (envPtr->codeNext - envPtr->codeStart) - bodyCodeOffset;
+
+	jumpDist = CurrentOffset(envPtr) - bodyCodeOffset;
 	if (jumpDist > 127) {
 	    TclEmitInstInt4(INST_JUMP_TRUE4, -jumpDist, envPtr);
 	} else {
 	    TclEmitInstInt1(INST_JUMP_TRUE1, -jumpDist, envPtr);
 	}
     } else {
-	jumpDist = (envPtr->codeNext - envPtr->codeStart) - bodyCodeOffset;
+	jumpDist = CurrentOffset(envPtr) - bodyCodeOffset;
 	if (jumpDist > 127) {
 	    TclEmitInstInt4(INST_JUMP4, -jumpDist, envPtr);
 	} else {
 	    TclEmitInstInt1(INST_JUMP1, -jumpDist, envPtr);
-	}	
+	}
     }
 
-
     /*
      * Set the loop's body, continue and break offsets.
      */
 
     envPtr->exceptArrayPtr[range].continueOffset = testCodeOffset;
     envPtr->exceptArrayPtr[range].codeOffset = bodyCodeOffset;
-    envPtr->exceptArrayPtr[range].breakOffset =
-	    (envPtr->codeNext - envPtr->codeStart);
-    
+    ExceptionRangeTarget(envPtr, range, breakOffset);
+
     /*
      * The while command's result is an empty string.
      */
 
-    pushResult:
+  pushResult:
     envPtr->currStackDepth = savedStackDepth;
-    TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
-    envPtr->exceptDepth--;
+    PushLiteral(envPtr, "", 0);
     return TCL_OK;
-
-    error:
-    envPtr->exceptDepth--;
-    return code;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclPushVarName --
+ * PushVarName --
  *
- *	Procedure used in the compiling where pushing a variable name
- *	is necessary (append, lappend, set).
+ *	Procedure used in the compiling where pushing a variable name is
+ *	necessary (append, lappend, set).
  *
  * Results:
- *	The return value is a standard Tcl result, which is normally TCL_OK
- *	unless there was an error while parsing string. If an error occurs
- *	then the interpreter's result contains a standard error message.
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute the "set" command
- *	at runtime.
+ *	Instructions are added to envPtr to execute the "set" command at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
-#ifndef TCL_TIP280
-	simpleVarNamePtr, isScalarPtr)
-#else
-	simpleVarNamePtr, isScalarPtr, line, clNext)
-#endif
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Token *varTokenPtr;	/* Points to a variable token. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
-    int flags;			/* takes TCL_CREATE_VAR or
-				 * TCL_NO_LARGE_INDEX */
-    int *localIndexPtr;		/* must not be NULL */
-    int *simpleVarNamePtr;	/* must not be NULL */
-    int *isScalarPtr;		/* must not be NULL */
-#ifdef TCL_TIP280
-    int line;                   /* line the token starts on */
-    int* clNext;
-#endif
-{
-    register CONST char *p;
-    CONST char *name, *elName;
+PushVarName(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Token *varTokenPtr,	/* Points to a variable token. */
+    CompileEnv *envPtr,		/* Holds resulting instructions. */
+    int flags,			/* TCL_CREATE_VAR or TCL_NO_LARGE_INDEX. */
+    int *localIndexPtr,		/* Must not be NULL. */
+    int *simpleVarNamePtr,	/* Must not be NULL. */
+    int *isScalarPtr,		/* Must not be NULL. */
+    int line,                   /* Line the token starts on. */
+    int* clNext)                /* Reference to offset of next hidden cont. line */
+{
+    register const char *p;
+    const char *name, *elName;
     register int i, n;
-    int nameChars, elNameChars, simpleVarName, localIndex;
-    int code = TCL_OK;
-
     Tcl_Token *elemTokenPtr = NULL;
-    int elemTokenCount = 0;
-    int allocedTokens = 0;
-    int removedParen = 0;
+    int nameChars, elNameChars, simpleVarName, localIndex;
+    int elemTokenCount = 0, allocedTokens = 0, removedParen = 0;
 
     /*
-     * Decide if we can use a frame slot for the var/array name or if we
-     * need to emit code to compute and push the name at runtime. We use a
-     * frame slot (entry in the array of local vars) if we are compiling a
-     * procedure body and if the name is simple text that does not include
-     * namespace qualifiers. 
+     * Decide if we can use a frame slot for the var/array name or if we need
+     * to emit code to compute and push the name at runtime. We use a frame
+     * slot (entry in the array of local vars) if we are compiling a procedure
+     * body and if the name is simple text that does not include namespace
+     * qualifiers.
      */
 
     simpleVarName = 0;
@@ -3267,8 +4897,8 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 
     /*
      * Check not only that the type is TCL_TOKEN_SIMPLE_WORD, but whether
-     * curly braces surround the variable name.
-     * This really matters for array elements to handle things like
+     * curly braces surround the variable name. This really matters for array
+     * elements to handle things like
      *    set {x($foo)} 5
      * which raises an undefined var error if we are not careful here.
      */
@@ -3279,31 +4909,33 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 	 * A simple variable name. Divide it up into "name" and "elName"
 	 * strings. If it is not a local variable, look it up at runtime.
 	 */
+
 	simpleVarName = 1;
 
 	name = varTokenPtr[1].start;
 	nameChars = varTokenPtr[1].size;
-	if ( *(name + nameChars - 1) == ')') {
-	    /* 
+	if (name[nameChars-1] == ')') {
+	    /*
 	     * last char is ')' => potential array reference.
 	     */
 
-	    for (i = 0, p = name;  i < nameChars;  i++, p++) {
+	    for (i=0,p=name ; i<nameChars ; i++,p++) {
 		if (*p == '(') {
 		    elName = p + 1;
 		    elNameChars = nameChars - i - 2;
-		    nameChars = i ;
+		    nameChars = i;
 		    break;
 		}
 	    }
 
 	    if ((elName != NULL) && elNameChars) {
 		/*
-		 * An array element, the element name is a simple
-		 * string: assemble the corresponding token.
+		 * An array element, the element name is a simple string:
+		 * assemble the corresponding token.
 		 */
 
-		elemTokenPtr = (Tcl_Token *) ckalloc(sizeof(Tcl_Token));
+		elemTokenPtr = (Tcl_Token *) TclStackAlloc(interp,
+			sizeof(Tcl_Token));
 		allocedTokens = 1;
 		elemTokenPtr->type = TCL_TOKEN_TEXT;
 		elemTokenPtr->start = elName;
@@ -3314,28 +4946,28 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 	}
     } else if (((n = varTokenPtr->numComponents) > 1)
 	    && (varTokenPtr[1].type == TCL_TOKEN_TEXT)
-            && (varTokenPtr[n].type == TCL_TOKEN_TEXT)
-            && (varTokenPtr[n].start[varTokenPtr[n].size - 1] == ')')) {
+	    && (varTokenPtr[n].type == TCL_TOKEN_TEXT)
+	    && (varTokenPtr[n].start[varTokenPtr[n].size - 1] == ')')) {
 
-        /*
-	 * Check for parentheses inside first token
+	/*
+	 * Check for parentheses inside first token.
 	 */
 
-        simpleVarName = 0;
-        for (i = 0, p = varTokenPtr[1].start; 
-	     i < varTokenPtr[1].size; i++, p++) {
-            if (*p == '(') {
-                simpleVarName = 1;
-                break;
-            }
-        }
-        if (simpleVarName) {
+	simpleVarName = 0;
+	for (i = 0, p = varTokenPtr[1].start;
+		i < varTokenPtr[1].size; i++, p++) {
+	    if (*p == '(') {
+		simpleVarName = 1;
+		break;
+	    }
+	}
+	if (simpleVarName) {
 	    int remainingChars;
 
 	    /*
-	     * Check the last token: if it is just ')', do not count
-	     * it. Otherwise, remove the ')' and flag so that it is
-	     * restored at the end.
+	     * Check the last token: if it is just ')', do not count it.
+	     * Otherwise, remove the ')' and flag so that it is restored at
+	     * the end.
 	     */
 
 	    if (varTokenPtr[n].size == 1) {
@@ -3345,39 +4977,40 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 		removedParen = n;
 	    }
 
-            name = varTokenPtr[1].start;
-            nameChars = p - varTokenPtr[1].start;
-            elName = p + 1;
-            remainingChars = (varTokenPtr[2].start - p) - 1;
-            elNameChars = (varTokenPtr[n].start - p) + varTokenPtr[n].size - 2;
+	    name = varTokenPtr[1].start;
+	    nameChars = p - varTokenPtr[1].start;
+	    elName = p + 1;
+	    remainingChars = (varTokenPtr[2].start - p) - 1;
+	    elNameChars = (varTokenPtr[n].start - p) + varTokenPtr[n].size - 2;
 
 	    if (remainingChars) {
 		/*
-		 * Make a first token with the extra characters in the first 
+		 * Make a first token with the extra characters in the first
 		 * token.
 		 */
 
-		elemTokenPtr = (Tcl_Token *) ckalloc(n * sizeof(Tcl_Token));
+		elemTokenPtr = (Tcl_Token *) TclStackAlloc(interp,
+			n * sizeof(Tcl_Token));
 		allocedTokens = 1;
 		elemTokenPtr->type = TCL_TOKEN_TEXT;
 		elemTokenPtr->start = elName;
 		elemTokenPtr->size = remainingChars;
 		elemTokenPtr->numComponents = 0;
 		elemTokenCount = n;
-		
+
 		/*
 		 * Copy the remaining tokens.
 		 */
-		
-		memcpy((void *) (elemTokenPtr+1), (void *) (&varTokenPtr[2]),
-		       ((n-1) * sizeof(Tcl_Token)));
+
+		memcpy(elemTokenPtr+1, varTokenPtr+2,
+			(n-1) * sizeof(Tcl_Token));
 	    } else {
 		/*
 		 * Use the already available tokens.
 		 */
-		
+
 		elemTokenPtr = &varTokenPtr[2];
-		elemTokenCount = n - 1;	    
+		elemTokenCount = n - 1;
 	    }
 	}
     }
@@ -3396,23 +5029,25 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 	}
 
 	/*
-	 * Look up the var name's index in the array of local vars in the
-	 * proc frame. If retrieving the var's value and it doesn't already
-	 * exist, push its name and look it up at runtime.
+	 * Look up the var name's index in the array of local vars in the proc
+	 * frame. If retrieving the var's value and it doesn't already exist,
+	 * push its name and look it up at runtime.
 	 */
 
 	if ((envPtr->procPtr != NULL) && !hasNsQualifiers) {
 	    localIndex = TclFindCompiledLocal(name, nameChars,
-		    /*create*/ (flags & TCL_CREATE_VAR),
-                    /*flags*/ ((elName==NULL)? VAR_SCALAR : VAR_ARRAY),
+		    /*create*/ flags & TCL_CREATE_VAR,
 		    envPtr->procPtr);
 	    if ((flags & TCL_NO_LARGE_INDEX) && (localIndex > 255)) {
-		/* we'll push the name */
+		/*
+		 * We'll push the name.
+		 */
+
 		localIndex = -1;
 	    }
 	}
 	if (localIndex < 0) {
-	    TclEmitPush(TclRegisterNewLiteral(envPtr, name, nameChars), envPtr);
+	    PushLiteral(envPtr, name, nameChars);
 	}
 
 	/*
@@ -3421,17 +5056,11 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 
 	if (elName != NULL) {
 	    if (elNameChars) {
-#ifdef TCL_TIP280
-	        envPtr->line   = line;
-	        envPtr->clNext = clNext;
-#endif
-		code = TclCompileTokens(interp, elemTokenPtr,
-                        elemTokenCount, envPtr);
-		if (code != TCL_OK) {
-		    goto done;
-		}
+		envPtr->line = line;
+		envPtr->clNext = clNext;
+		TclCompileTokens(interp, elemTokenPtr, elemTokenCount, envPtr);
 	    } else {
-		TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
+		PushLiteral(envPtr, "", 0);
 	    }
 	}
     } else {
@@ -3439,28 +5068,1406 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
 	 * The var name isn't simple: compile and push it.
 	 */
 
-#ifdef TCL_TIP280
-        envPtr->line   = line;
-        envPtr->clNext = clNext;
-#endif
-	code = TclCompileTokens(interp, varTokenPtr+1,
-		varTokenPtr->numComponents, envPtr);
-	if (code != TCL_OK) {
-	    goto done;
-	}
+	envPtr->line = line;
+	envPtr->clNext = clNext;
+	CompileTokens(envPtr, varTokenPtr, interp);
     }
 
-    done:
     if (removedParen) {
 	++varTokenPtr[removedParen].size;
     }
     if (allocedTokens) {
-        ckfree((char *) elemTokenPtr);
+	TclStackFree(interp, elemTokenPtr);
     }
-    *localIndexPtr	= localIndex;
-    *simpleVarNamePtr	= simpleVarName;
-    *isScalarPtr	= (elName == NULL);
-    return code;
+    *localIndexPtr = localIndex;
+    *simpleVarNamePtr = simpleVarName;
+    *isScalarPtr = (elName == NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CompileUnaryOpCmd --
+ *
+ *	Utility routine to compile the unary operator commands.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the compiled command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+CompileUnaryOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    int instruction,
+    CompileEnv *envPtr)
+{
+    Tcl_Token *tokenPtr;
+    DefineLineInformation;	/* TIP #280 */
+
+    if (parsePtr->numWords != 2) {
+	return TCL_ERROR;
+    }
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 1);
+    TclEmitOpcode(instruction, envPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CompileAssociativeBinaryOpCmd --
+ *
+ *	Utility routine to compile the binary operator commands that accept an
+ *	arbitrary number of arguments, and that are associative operations.
+ *	Because of the associativity, we may combine operations from right to
+ *	left, saving us any effort of re-ordering the arguments on the stack
+ *	after substitutions are completed.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the compiled command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+CompileAssociativeBinaryOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    const char *identity,
+    int instruction,
+    CompileEnv *envPtr)
+{
+    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
+    DefineLineInformation;	/* TIP #280 */
+    int words;
+
+    for (words=1 ; words<parsePtr->numWords ; words++) {
+	tokenPtr = TokenAfter(tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, words);
+    }
+    if (parsePtr->numWords <= 2) {
+	PushLiteral(envPtr, identity, -1);
+	words++;
+    }
+    if (words > 3) {
+	/*
+	 * Reverse order of arguments to get precise agreement with
+	 * [expr] in calcuations, including roundoff errors.
+	 */
+	TclEmitInstInt4(INST_REVERSE, words-1, envPtr);
+    }
+    while (--words > 1) {
+	TclEmitOpcode(instruction, envPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CompileStrictlyBinaryOpCmd --
+ *
+ *	Utility routine to compile the binary operator commands, that strictly
+ *	accept exactly two arguments.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the compiled command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+CompileStrictlyBinaryOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    int instruction,
+    CompileEnv *envPtr)
+{
+    if (parsePtr->numWords != 3) {
+	return TCL_ERROR;
+    }
+    return CompileAssociativeBinaryOpCmd(interp, parsePtr,
+	    NULL, instruction, envPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CompileComparisonOpCmd --
+ *
+ *	Utility routine to compile the n-ary comparison operator commands.
+ *
+ * Results:
+ *	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ *	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the compiled command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+CompileComparisonOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    int instruction,
+    CompileEnv *envPtr)
+{
+    Tcl_Token *tokenPtr;
+    DefineLineInformation;	/* TIP #280 */
+
+    if (parsePtr->numWords < 3) {
+	PushLiteral(envPtr, "1", 1);
+    } else if (parsePtr->numWords == 3) {
+	tokenPtr = TokenAfter(parsePtr->tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, 1);
+	tokenPtr = TokenAfter(tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, 2);
+	TclEmitOpcode(instruction, envPtr);
+    } else if (envPtr->procPtr == NULL) {
+	/*
+	 * No local variable space!
+	 */
+
+	return TCL_ERROR;
+    } else {
+	int tmpIndex = TclFindCompiledLocal(NULL, 0, 1, envPtr->procPtr);
+	int words;
+
+	tokenPtr = TokenAfter(parsePtr->tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, 1);
+	tokenPtr = TokenAfter(tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, 2);
+	if (tmpIndex <= 255) {
+	    TclEmitInstInt1(INST_STORE_SCALAR1, tmpIndex, envPtr);
+	} else {
+	    TclEmitInstInt4(INST_STORE_SCALAR4, tmpIndex, envPtr);
+	}
+	TclEmitOpcode(instruction, envPtr);
+	for (words=3 ; words<parsePtr->numWords ;) {
+	    if (tmpIndex <= 255) {
+		TclEmitInstInt1(INST_LOAD_SCALAR1, tmpIndex, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_LOAD_SCALAR4, tmpIndex, envPtr);
+	    }
+	    tokenPtr = TokenAfter(tokenPtr);
+	    CompileWord(envPtr, tokenPtr, interp, words);
+	    if (++words < parsePtr->numWords) {
+		if (tmpIndex <= 255) {
+		    TclEmitInstInt1(INST_STORE_SCALAR1, tmpIndex, envPtr);
+		} else {
+		    TclEmitInstInt4(INST_STORE_SCALAR4, tmpIndex, envPtr);
+		}
+	    }
+	    TclEmitOpcode(instruction, envPtr);
+	}
+	for (; words>3 ; words--) {
+	    TclEmitOpcode(INST_BITAND, envPtr);
+	}
+
+	/*
+	 * Drop the value from the temp variable; retaining that reference
+	 * might be expensive elsewhere.
+	 */
+
+	PushLiteral(envPtr, "", 0);
+	if (tmpIndex <= 255) {
+	    TclEmitInstInt1(INST_STORE_SCALAR1, tmpIndex, envPtr);
+	} else {
+	    TclEmitInstInt4(INST_STORE_SCALAR4, tmpIndex, envPtr);
+	}
+	TclEmitOpcode(INST_POP, envPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompile*OpCmd --
+ *
+ *	Procedures called to compile the corresponding "::tcl::mathop::*"
+ *	commands. These are all wrappers around the utility operator command
+ *	compiler functions, except for the compilers for subtraction and
+ *	division, which are special.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the compiled command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileInvertOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileUnaryOpCmd(interp, parsePtr, INST_BITNOT, envPtr);
+}
+
+int
+TclCompileNotOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileUnaryOpCmd(interp, parsePtr, INST_LNOT, envPtr);
+}
+
+int
+TclCompileAddOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileAssociativeBinaryOpCmd(interp, parsePtr, "0", INST_ADD,
+	    envPtr);
+}
+
+int
+TclCompileMulOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileAssociativeBinaryOpCmd(interp, parsePtr, "1", INST_MULT,
+	    envPtr);
+}
+
+int
+TclCompileAndOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileAssociativeBinaryOpCmd(interp, parsePtr, "-1", INST_BITAND,
+	    envPtr);
+}
+
+int
+TclCompileOrOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileAssociativeBinaryOpCmd(interp, parsePtr, "0", INST_BITOR,
+	    envPtr);
+}
+
+int
+TclCompileXorOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileAssociativeBinaryOpCmd(interp, parsePtr, "0", INST_BITXOR,
+	    envPtr);
+}
+
+int
+TclCompilePowOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    /*
+     * This one has its own implementation because the ** operator is
+     * the only one with right associativity.
+     */
+    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
+    DefineLineInformation;	/* TIP #280 */
+    int words;
+
+    for (words=1 ; words<parsePtr->numWords ; words++) {
+	tokenPtr = TokenAfter(tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, words);
+    }
+    if (parsePtr->numWords <= 2) {
+	PushLiteral(envPtr, "1", 1);
+	words++;
+    }
+    while (--words > 1) {
+	TclEmitOpcode(INST_EXPON, envPtr);
+    }
+    return TCL_OK;
+}
+
+int
+TclCompileLshiftOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_LSHIFT, envPtr);
+}
+
+int
+TclCompileRshiftOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_RSHIFT, envPtr);
+}
+
+int
+TclCompileModOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_MOD, envPtr);
+}
+
+int
+TclCompileNeqOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_NEQ, envPtr);
+}
+
+int
+TclCompileStrneqOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_STR_NEQ, envPtr);
+}
+
+int
+TclCompileInOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_LIST_IN, envPtr);
+}
+
+int
+TclCompileNiOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileStrictlyBinaryOpCmd(interp, parsePtr, INST_LIST_NOT_IN,
+	    envPtr);
+}
+
+int
+TclCompileLessOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileComparisonOpCmd(interp, parsePtr, INST_LT, envPtr);
+}
+
+int
+TclCompileLeqOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileComparisonOpCmd(interp, parsePtr, INST_LE, envPtr);
+}
+
+int
+TclCompileGreaterOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileComparisonOpCmd(interp, parsePtr, INST_GT, envPtr);
+}
+
+int
+TclCompileGeqOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileComparisonOpCmd(interp, parsePtr, INST_GE, envPtr);
+}
+
+int
+TclCompileEqOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileComparisonOpCmd(interp, parsePtr, INST_EQ, envPtr);
+}
+
+int
+TclCompileStreqOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    return CompileComparisonOpCmd(interp, parsePtr, INST_STR_EQ, envPtr);
+}
+
+int
+TclCompileMinusOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
+    DefineLineInformation;	/* TIP #280 */
+    int words;
+
+    if (parsePtr->numWords == 1) {
+	/* Fallback to direct eval to report syntax error */
+	return TCL_ERROR;
+    }
+    for (words=1 ; words<parsePtr->numWords ; words++) {
+	tokenPtr = TokenAfter(tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, words);
+    }
+    if (words == 2) {
+	TclEmitOpcode(INST_UMINUS, envPtr);
+	return TCL_OK;
+    }
+    if (words == 3) {
+	TclEmitOpcode(INST_SUB, envPtr);
+	return TCL_OK;
+    }
+    /*
+     * Reverse order of arguments to get precise agreement with
+     * [expr] in calcuations, including roundoff errors.
+     */
+    TclEmitInstInt4(INST_REVERSE, words-1, envPtr);
+    while (--words > 1) {
+	TclEmitInstInt4(INST_REVERSE, 2, envPtr);
+	TclEmitOpcode(INST_SUB, envPtr);
+    }
+    return TCL_OK;
+}
+
+int
+TclCompileDivOpCmd(
+    Tcl_Interp *interp,
+    Tcl_Parse *parsePtr,
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)
+{
+    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
+    DefineLineInformation;	/* TIP #280 */
+    int words;
+
+    if (parsePtr->numWords == 1) {
+	/* Fallback to direct eval to report syntax error */
+	return TCL_ERROR;
+    }
+    if (parsePtr->numWords == 2) {
+	PushLiteral(envPtr, "1.0", 3);
+    }
+    for (words=1 ; words<parsePtr->numWords ; words++) {
+	tokenPtr = TokenAfter(tokenPtr);
+	CompileWord(envPtr, tokenPtr, interp, words);
+    }
+    if (words <= 3) {
+	TclEmitOpcode(INST_DIV, envPtr);
+	return TCL_OK;
+    }
+    /*
+     * Reverse order of arguments to get precise agreement with
+     * [expr] in calcuations, including roundoff errors.
+     */
+    TclEmitInstInt4(INST_REVERSE, words-1, envPtr);
+    while (--words > 1) {
+	TclEmitInstInt4(INST_REVERSE, 2, envPtr);
+	TclEmitOpcode(INST_DIV, envPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * IndexTailVarIfKnown --
+ *
+ *	Procedure used in compiling [global] and [variable] commands. It
+ *	inspects the variable name described by varTokenPtr and, if the tail
+ *	is known at compile time, defines a corresponding local variable.
+ *
+ * Results:
+ * 	Returns the variable's index in the table of compiled locals if the
+ *      tail is known at compile time, or -1 otherwise.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+IndexTailVarIfKnown(
+    Tcl_Interp *interp,
+    Tcl_Token *varTokenPtr,	/* Token representing the variable name */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Obj *tailPtr;
+    const char *tailName, *p;
+    int len, n = varTokenPtr->numComponents;
+    Tcl_Token *lastTokenPtr;
+    int full, localIndex;
+
+    /*
+     * Determine if the tail is (a) known at compile time, and (b) not an
+     * array element. Should any of these fail, return an error so that
+     * the non-compiled command will be called at runtime.
+     * In order for the tail to be known at compile time, the last token
+     * in the word has to be constant and contain "::" if it is not the
+     * only one.
+     */
+
+    if (envPtr->procPtr == NULL) {
+	return -1;
+    }
+
+    TclNewObj(tailPtr);
+    if (TclWordKnownAtCompileTime(varTokenPtr, tailPtr)) {
+	full = 1;
+	lastTokenPtr = varTokenPtr;
+    } else {
+	full = 0;
+	lastTokenPtr = varTokenPtr + n;
+	if (!TclWordKnownAtCompileTime(lastTokenPtr, tailPtr)) {
+	    Tcl_DecrRefCount(tailPtr);
+	    return -1;
+	}
+    }
+
+    tailName = TclGetStringFromObj(tailPtr, &len);
+
+    if (len) {
+	if (*(tailName+len-1) == ')') {
+	    /*
+	     * Possible array: bail out
+	     */
+
+	    Tcl_DecrRefCount(tailPtr);
+	    return -1;
+	}
+
+	/*
+	 * Get the tail: immediately after the last '::'
+	 */
+
+	for(p = tailName + len -1; p > tailName; p--) {
+	    if ((*p == ':') && (*(p-1) == ':')) {
+		p++;
+		break;
+	    }
+	}
+	if (!full && (p == tailName)) {
+	    /*
+	     * No :: in the last component
+	     */
+	    Tcl_DecrRefCount(tailPtr);
+	    return -1;
+	}
+	len -= p - tailName;
+	tailName = p;
+    }
+
+    localIndex = TclFindCompiledLocal(tailName, len,
+	    /*create*/ TCL_CREATE_VAR,
+	    envPtr->procPtr);
+    Tcl_DecrRefCount(tailPtr);
+    return localIndex;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileUpvarCmd --
+ *
+ *	Procedure called to compile the "upvar" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "upvar" command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileUpvarCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr, *otherTokenPtr, *localTokenPtr;
+    int simpleVarName, isScalar, localIndex, numWords, i;
+    DefineLineInformation;	/* TIP #280 */
+    Tcl_Obj *objPtr = Tcl_NewObj();
+
+    if (envPtr->procPtr == NULL) {
+	Tcl_DecrRefCount(objPtr);
+	return TCL_ERROR;
+    }
+
+    numWords = parsePtr->numWords;
+    if (numWords < 3) {
+	Tcl_DecrRefCount(objPtr);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Push the frame index if it is known at compile time
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if(TclWordKnownAtCompileTime(tokenPtr, objPtr)) {
+	CallFrame *framePtr;
+	Tcl_ObjType *newTypePtr, *typePtr = objPtr->typePtr;
+
+	/*
+	 * Attempt to convert to a level reference. Note that TclObjGetFrame
+	 * only changes the obj type when a conversion was successful.
+	 */
+
+	TclObjGetFrame(interp, objPtr, &framePtr);
+	newTypePtr = objPtr->typePtr;
+	Tcl_DecrRefCount(objPtr);
+
+	if (newTypePtr != typePtr) {
+	    if(numWords%2) {
+		return TCL_ERROR;
+	    }
+	    CompileWord(envPtr, tokenPtr, interp, 1);
+	    otherTokenPtr = TokenAfter(tokenPtr);
+	    i = 4;
+	} else {
+	    if(!(numWords%2)) {
+		return TCL_ERROR;
+	    }
+	    PushLiteral(envPtr, "1", 1);
+	    otherTokenPtr = tokenPtr;
+	    i = 3;
+	}
+    } else {
+	Tcl_DecrRefCount(objPtr);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Loop over the (otherVar, thisVar) pairs. If any of the thisVar is not a
+     * local variable, return an error so that the non-compiled command will
+     * be called at runtime.
+     */
+
+    for(; i<=numWords; i+=2, otherTokenPtr = TokenAfter(localTokenPtr)) {
+	localTokenPtr = TokenAfter(otherTokenPtr);
+
+	CompileWord(envPtr, otherTokenPtr, interp, 1);
+	PushVarNameWord(interp, localTokenPtr, envPtr, TCL_CREATE_VAR,
+			&localIndex, &simpleVarName, &isScalar, 1);
+
+	if((localIndex < 0) || !isScalar) {
+	    return TCL_ERROR;
+	}
+	TclEmitInstInt4(INST_UPVAR, localIndex, envPtr);
+    }
+
+    /*
+     * Pop the frame index, and set the result to empty
+     */
+
+    TclEmitOpcode(INST_POP, envPtr);
+    PushLiteral(envPtr, "", 0);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileNamespaceCmd --
+ *
+ *	Procedure called to compile the "namespace" command; currently, only
+ *	the subcommand "namespace upvar" is compiled to bytecodes.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "namespace upvar"
+ *      command at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileNamespaceCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr, *otherTokenPtr, *localTokenPtr;
+    int simpleVarName, isScalar, localIndex, numWords, i;
+    DefineLineInformation;	/* TIP #280 */
+
+    if (envPtr->procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Only compile [namespace upvar ...]: needs an odd number of args, >=5
+     */
+
+    numWords = parsePtr->numWords;
+    if (!(numWords%2) || (numWords < 5)) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Check if the second argument is "upvar"
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if ((tokenPtr->size != 5)  /* 5 == strlen("upvar") */
+	    || strncmp(tokenPtr->start, "upvar", 5)) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Push the namespace
+     */
+
+    tokenPtr = TokenAfter(tokenPtr);
+    CompileWord(envPtr, tokenPtr, interp, 1);
+
+    /*
+     * Loop over the (otherVar, thisVar) pairs. If any of the thisVar is not a
+     * local variable, return an error so that the non-compiled command will
+     * be called at runtime.
+     */
+
+    localTokenPtr = tokenPtr;
+    for(i=4; i<=numWords; i+=2) {
+	otherTokenPtr = TokenAfter(localTokenPtr);
+	localTokenPtr = TokenAfter(otherTokenPtr);
+
+	CompileWord(envPtr, otherTokenPtr, interp, 1);
+	PushVarNameWord(interp, localTokenPtr, envPtr, TCL_CREATE_VAR,
+			&localIndex, &simpleVarName, &isScalar, 1);
+
+	if((localIndex < 0) || !isScalar) {
+	    return TCL_ERROR;
+	}
+	TclEmitInstInt4(INST_NSUPVAR, localIndex, envPtr);
+    }
+
+    /*
+     * Pop the namespace, and set the result to empty
+     */
+
+    TclEmitOpcode(INST_POP, envPtr);
+    PushLiteral(envPtr, "", 0);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileGlobalCmd --
+ *
+ *	Procedure called to compile the "global" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "global" command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileGlobalCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *varTokenPtr;
+    int localIndex, numWords, i;
+    DefineLineInformation;	/* TIP #280 */
+
+    numWords = parsePtr->numWords;
+    if (numWords < 2) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * 'global' has no effect outside of proc bodies; handle that at runtime
+     */
+
+    if (envPtr->procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Push the namespace
+     */
+
+    PushLiteral(envPtr, "::", 2);
+
+    /*
+     * Loop over the variables.
+     */
+
+    varTokenPtr = TokenAfter(parsePtr->tokenPtr);
+    for(i=2; i<=numWords; varTokenPtr = TokenAfter(varTokenPtr),i++) {
+	localIndex = IndexTailVarIfKnown(interp, varTokenPtr, envPtr);
+
+	if(localIndex < 0) {
+	    return TCL_ERROR;
+	}
+
+	CompileWord(envPtr, varTokenPtr, interp, 1);
+	TclEmitInstInt4(INST_NSUPVAR, localIndex, envPtr);
+    }
+
+    /*
+     * Pop the namespace, and set the result to empty
+     */
+
+    TclEmitOpcode(INST_POP, envPtr);
+    PushLiteral(envPtr, "", 0);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileVariableCmd --
+ *
+ *	Procedure called to compile the "variable" command.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "variable" command at
+ *	runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileVariableCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *varTokenPtr, *valueTokenPtr;
+    int localIndex, numWords, i;
+    DefineLineInformation;	/* TIP #280 */
+
+    numWords = parsePtr->numWords;
+    if (numWords < 2) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Bail out if not compiling a proc body
+     */
+
+    if (envPtr->procPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Loop over the (var, value) pairs.
+     */
+
+    valueTokenPtr = parsePtr->tokenPtr;
+    for(i=2; i<=numWords; i+=2) {
+	varTokenPtr = TokenAfter(valueTokenPtr);
+	valueTokenPtr = TokenAfter(varTokenPtr);
+
+	localIndex = IndexTailVarIfKnown(interp, varTokenPtr, envPtr);
+
+	if(localIndex < 0) {
+	    return TCL_ERROR;
+	}
+
+	CompileWord(envPtr, varTokenPtr, interp, 1);
+	TclEmitInstInt4(INST_VARIABLE, localIndex, envPtr);
+
+	if (i != numWords) {
+	    /*
+	     * A value has been given: set the variable, pop the value
+	     */
+
+	    CompileWord(envPtr, valueTokenPtr, interp, 1);
+	    TclEmitInstInt4(INST_STORE_SCALAR4, localIndex, envPtr);
+	    TclEmitOpcode(INST_POP, envPtr);
+	}
+    }
+
+    /*
+     * Set the result to empty
+     */
+
+    PushLiteral(envPtr, "", 0);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileEnsemble --
+ *
+ *	Procedure called to compile an ensemble command. Note that most
+ *	ensembles are not compiled, since modifying a compiled ensemble causes
+ *	a invalidation of all existing bytecode (expensive!) which is not
+ *	normally warranted.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the subcommands of the
+ *	ensemble at runtime if a compile-time mapping is possible.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileEnsemble(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr;
+    Tcl_Obj *mapObj, *subcmdObj, *targetCmdObj, *listObj, **elems;
+    Tcl_Command ensemble = (Tcl_Command) cmdPtr;
+    Tcl_Parse synthetic;
+    int len, numBytes, result, flags = 0, i;
+    const char *word;
+
+    if (parsePtr->numWords < 2) {
+	return TCL_ERROR;
+    }
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	/*
+	 * Too hard.
+	 */
+
+	return TCL_ERROR;
+    }
+
+    word = tokenPtr[1].start;
+    numBytes = tokenPtr[1].size;
+
+    /*
+     * There's a sporting chance we'll be able to compile this. But now we
+     * must check properly. To do that, check that we're compiling an ensemble
+     * that has a compilable command as its appropriate subcommand.
+     */
+
+    if (Tcl_GetEnsembleMappingDict(NULL, ensemble, &mapObj) != TCL_OK
+	    || mapObj == NULL) {
+	/*
+	 * Either not an ensemble or a mapping isn't installed. Crud. Too hard
+	 * to proceed.
+	 */
+
+	return TCL_ERROR;
+    }
+
+    /*
+     * Next, get the flags. We need them on several code paths.
+     */
+
+    (void) Tcl_GetEnsembleFlags(NULL, ensemble, &flags);
+
+    /*
+     * Check to see if there's also a subcommand list; must check to see if
+     * the subcommand we are calling is in that list if it exists, since that
+     * list filters the entries in the map.
+     */
+
+    (void) Tcl_GetEnsembleSubcommandList(NULL, ensemble, &listObj);
+    if (listObj != NULL) {
+	int sclen;
+	const char *str;
+	Tcl_Obj *matchObj = NULL;
+
+	if (Tcl_ListObjGetElements(NULL, listObj, &len, &elems) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	for (i=0 ; i<len ; i++) {
+	    str = Tcl_GetStringFromObj(elems[i], &sclen);
+	    if (sclen==numBytes && !memcmp(word, str, (unsigned) numBytes)) {
+		/*
+		 * Exact match! Excellent!
+		 */
+
+		result = Tcl_DictObjGet(NULL, mapObj,elems[i], &targetCmdObj);
+		if (result != TCL_OK || targetCmdObj == NULL) {
+		    return TCL_ERROR;
+		}
+		goto doneMapLookup;
+	    }
+
+	    /*
+	     * Check to see if we've got a prefix match. A single prefix match
+	     * is fine, and allows us to refine our dictionary lookup, but
+	     * multiple prefix matches is a Bad Thing and will prevent us from
+	     * making progress. Note that we cannot do the lookup immediately
+	     * in the prefix case; might be another entry later in the list
+	     * that causes things to fail.
+	     */
+
+	    if ((flags & TCL_ENSEMBLE_PREFIX)
+		    && strncmp(word, str, (unsigned) numBytes) == 0) {
+		if (matchObj != NULL) {
+		    return TCL_ERROR;
+		}
+		matchObj = elems[i];
+	    }
+	}
+	if (matchObj != NULL) {
+	    result = Tcl_DictObjGet(NULL, mapObj, matchObj, &targetCmdObj);
+	    if (result != TCL_OK || targetCmdObj == NULL) {
+		return TCL_ERROR;
+	    }
+	    goto doneMapLookup;
+	}
+	return TCL_ERROR;
+    } else {
+	/*
+	 * No map, so check the dictionary directly.
+	 */
+
+	TclNewStringObj(subcmdObj, word, numBytes);
+	result = Tcl_DictObjGet(NULL, mapObj, subcmdObj, &targetCmdObj);
+	TclDecrRefCount(subcmdObj);
+	if (result == TCL_OK && targetCmdObj != NULL) {
+	    /*
+	     * Got it. Skip the fiddling around with prefixes.
+	     */
+
+	    goto doneMapLookup;
+	}
+
+	/*
+	 * We've not literally got a valid subcommand. But maybe we have a
+	 * prefix. Check if prefix matches are allowed.
+	 */
+
+	if (flags & TCL_ENSEMBLE_PREFIX) {
+	    Tcl_DictSearch s;
+	    int done, matched;
+	    Tcl_Obj *tmpObj;
+
+	    /*
+	     * Iterate over the keys in the dictionary, checking to see if
+	     * we're a prefix.
+	     */
+
+	    Tcl_DictObjFirst(NULL,mapObj,&s,&subcmdObj,&tmpObj,&done);
+	    matched = 0;
+	    while (!done) {
+		if (strncmp(TclGetString(subcmdObj), word,
+			(unsigned) numBytes) == 0) {
+		    if (matched++) {
+			/*
+			 * Must have matched twice! Not unique, so no point
+			 * looking further.
+			 */
+
+			break;
+		    }
+		    targetCmdObj = tmpObj;
+		}
+		Tcl_DictObjNext(&s, &subcmdObj, &tmpObj, &done);
+	    }
+	    Tcl_DictObjDone(&s);
+
+	    /*
+	     * If we have anything other than a single match, we've failed the
+	     * unique prefix check.
+	     */
+
+	    if (matched != 1) {
+		return TCL_ERROR;
+	    }
+	} else {
+	    return TCL_ERROR;
+	}
+    }
+
+    /*
+     * OK, we definitely map to something. But what?
+     *
+     * The command we map to is the first word out of the map element. Note
+     * that we also reject dealing with multi-element rewrites if we are in a
+     * safe interpreter, as there is otherwise a (highly gnarly!) way to make
+     * Tcl crash open to exploit.
+     */
+
+  doneMapLookup:
+    if (Tcl_ListObjGetElements(NULL, targetCmdObj, &len, &elems) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (len > 1 && Tcl_IsSafe(interp)) {
+	return TCL_ERROR;
+    }
+    targetCmdObj = elems[0];
+
+    Tcl_IncrRefCount(targetCmdObj);
+    cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, targetCmdObj);
+    TclDecrRefCount(targetCmdObj);
+    if (cmdPtr == NULL || cmdPtr->compileProc == NULL
+	    || cmdPtr->flags & CMD_HAS_EXEC_TRACES
+	    || ((Interp *)interp)->flags & DONT_COMPILE_CMDS_INLINE) {
+	/*
+	 * Maps to an undefined command or a command without a compiler.
+	 * Cannot compile.
+	 */
+
+	return TCL_ERROR;
+    }
+
+    /*
+     * Now we've done the mapping process, can now actually try to compile.
+     * We do this by handing off to the subcommand's actual compiler. But to
+     * do that, we have to perform some trickery to rewrite the arguments.
+     */
+
+    TclParseInit(interp, NULL, 0, &synthetic);
+    synthetic.numWords = parsePtr->numWords - 2 + len;
+    TclGrowParseTokenArray(&synthetic, 2*len);
+    synthetic.numTokens = 2*len;
+
+    /*
+     * Now we have the space to work in, install something rewritten. Note
+     * that we are here praying for all our might that none of these words are
+     * a script; the error detection code will crash if that happens and there
+     * is nothing we can do to avoid it!
+     */
+
+    for (i=0 ; i<len ; i++) {
+	int sclen;
+	const char *str = Tcl_GetStringFromObj(elems[i], &sclen);
+
+	synthetic.tokenPtr[2*i].type = TCL_TOKEN_SIMPLE_WORD;
+	synthetic.tokenPtr[2*i].start = str;
+	synthetic.tokenPtr[2*i].size = sclen;
+	synthetic.tokenPtr[2*i].numComponents = 1;
+
+	synthetic.tokenPtr[2*i+1].type = TCL_TOKEN_TEXT;
+	synthetic.tokenPtr[2*i+1].start = str;
+	synthetic.tokenPtr[2*i+1].size = sclen;
+	synthetic.tokenPtr[2*i+1].numComponents = 0;
+    }
+
+    /*
+     * Copy over the real argument tokens.
+     */
+
+    for (i=len; i<synthetic.numWords; i++) {
+	int toCopy;
+	tokenPtr = TokenAfter(tokenPtr);
+	toCopy = tokenPtr->numComponents + 1;
+	TclGrowParseTokenArray(&synthetic, toCopy);
+	memcpy(synthetic.tokenPtr + synthetic.numTokens, tokenPtr,
+		sizeof(Tcl_Token) * toCopy);
+	synthetic.numTokens += toCopy;
+    }
+
+    /*
+     * Hand off compilation to the subcommand compiler. At last!
+     */
+
+    result = cmdPtr->compileProc(interp, &synthetic, cmdPtr, envPtr);
+
+    /*
+     * Clean up if necessary.
+     */
+
+    Tcl_FreeParse(&synthetic);
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileInfoExistsCmd --
+ *
+ *	Procedure called to compile the "info exists" subcommand.
+ *
+ * Results:
+ * 	Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer
+ * 	evaluation to runtime.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute the "info exists"
+ *	subcommand at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCompileInfoExistsCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr;
+    int isScalar, simpleVarName, localIndex;
+    DefineLineInformation;	/* TIP #280 */
+
+    if (parsePtr->numWords != 2) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Decide if we can use a frame slot for the var/array name or if we need
+     * to emit code to compute and push the name at runtime. We use a frame
+     * slot (entry in the array of local vars) if we are compiling a procedure
+     * body and if the name is simple text that does not include namespace
+     * qualifiers.
+     */
+
+    tokenPtr = TokenAfter(parsePtr->tokenPtr);
+    PushVarNameWord(interp, tokenPtr, envPtr, TCL_CREATE_VAR, &localIndex,
+		    &simpleVarName, &isScalar, 1);
+
+    /*
+     * Emit instruction to check the variable for existence.
+     */
+
+    if (simpleVarName) {
+	if (isScalar) {
+	    if (localIndex < 0) {
+		TclEmitOpcode(INST_EXIST_STK, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_EXIST_SCALAR, localIndex, envPtr);
+	    }
+	} else {
+	    if (localIndex < 0) {
+		TclEmitOpcode(INST_EXIST_ARRAY_STK, envPtr);
+	    } else {
+		TclEmitInstInt4(INST_EXIST_ARRAY, localIndex, envPtr);
+	    }
+	}
+    } else {
+	TclEmitOpcode(INST_EXIST_STK, envPtr);
+    }
+
+    return TCL_OK;
 }
 
 /*
@@ -3470,4 +6477,3 @@ TclPushVarName(interp, varTokenPtr, envPtr, flags, localIndexPtr,
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclCompExpr.c b/generic/tclCompExpr.c
index 6bac221..9142e2b 100644
--- a/generic/tclCompExpr.c
+++ b/generic/tclCompExpr.c
@@ -1,578 +1,2020 @@
-/* 
+/*
  * tclCompExpr.c --
  *
- *	This file contains the code to compile Tcl expressions.
+ *	This file contains the code to parse and compile Tcl expressions
+ *	and implementations of the Tcl commands corresponding to expression
+ *	operators, such as the command ::tcl::mathop::+ .
  *
- * Copyright (c) 1997 Sun Microsystems, Inc.
- * Copyright (c) 1998-2000 by Scriptics Corporation.
+ * Contributions from Don Porter, NIST, 2006-2007. (not subject to US copyright)
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclCompile.h"
+#include "tclCompile.h"		/* CompileEnv */
 
 /*
- * The stuff below is a bit of a hack so that this file can be used in
- * environments that include no UNIX, i.e. no errno: just arrange to use
- * the errno from tclExecute.c here.
+ * Expression parsing takes place in the routine ParseExpr().  It takes a
+ * string as input, parses that string, and generates a representation of
+ * the expression in the form of a tree of operators, a list of literals,
+ * a list of function names, and an array of Tcl_Token's within a Tcl_Parse
+ * struct.  The tree is composed of OpNodes.
  */
 
-#ifndef TCL_GENERIC_ONLY
-#include "tclPort.h"
-#else
-#define NO_ERRNO_H
-#endif
+typedef struct OpNode {
+    int left;			/* "Pointer" to the left operand. */
+    int right;			/* "Pointer" to the right operand. */
+    union {
+	int parent;		/* "Pointer" to the parent operand. */
+	int prev;		/* "Pointer" joining incomplete tree stack */
+    } p;
+    unsigned char lexeme;	/* Code that identifies the operator. */
+    unsigned char precedence;	/* Precedence of the operator */
+    unsigned char mark;		/* Mark used to control traversal. */
+    unsigned char constant;	/* Flag marking constant subexpressions. */
+} OpNode;
+
+/*
+ * The storage for the tree is dynamically allocated array of OpNodes.  The
+ * array is grown as parsing needs dictate according to a scheme similar to
+ * Tcl's string growth algorithm, so that the resizing costs are O(N) and so
+ * that we use at least half the memory allocated as expressions get large.
+ *
+ * Each OpNode in the tree represents an operator in the expression, either
+ * unary or binary.  When parsing is completed successfully, a binary operator
+ * OpNode will have its left and right fields filled with "pointers" to its
+ * left and right operands.  A unary operator OpNode will have its right field
+ * filled with a pointer to its single operand.  When an operand is a
+ * subexpression the "pointer" takes the form of the index -- a non-negative
+ * integer -- into the OpNode storage array where the root of that
+ * subexpression parse tree is found.
+ *
+ * Non-operator elements of the expression do not get stored in the OpNode
+ * tree.  They are stored in the other structures according to their type.
+ * Literal values get appended to the literal list.  Elements that denote
+ * forms of quoting or substitution known to the Tcl parser get stored as
+ * Tcl_Tokens.  These non-operator elements of the expression are the
+ * leaves of the completed parse tree.  When an operand of an OpNode is
+ * one of these leaf elements, the following negative integer codes are used
+ * to indicate which kind of elements it is.
+ */
 
-#ifdef NO_ERRNO_H
-extern int errno;			/* Use errno from tclExecute.c. */
-#define ERANGE 34
-#endif
+enum OperandTypes {
+    OT_LITERAL = -3,	/* Operand is a literal in the literal list */
+    OT_TOKENS = -2,	/* Operand is sequence of Tcl_Tokens */
+    OT_EMPTY = -1	/* "Operand" is an empty string.  This is a
+			 * special case used only to represent the
+			 * EMPTY lexeme.  See below. */
+};
 
 /*
- * Boolean variable that controls whether expression compilation tracing
- * is enabled.
+ * Readable macros to test whether a "pointer" value points to an operator.
+ * They operate on the "non-negative integer -> operator; negative integer ->
+ * a non-operator OperandType" distinction.
  */
 
-#ifdef TCL_COMPILE_DEBUG
-static int traceExprComp = 0;
-#endif /* TCL_COMPILE_DEBUG */
+#define IsOperator(l)	((l) >= 0)
+#define NotOperator(l)	((l) < 0)
 
 /*
- * The ExprInfo structure describes the state of compiling an expression.
- * A pointer to an ExprInfo record is passed among the routines in
- * this module.
+ * Note that it is sufficient to store in the tree just the type of leaf
+ * operand, without any explicit pointer to which leaf.  This is true because
+ * the traversals of the completed tree we perform are known to visit
+ * the leaves in the same order as the original parse.
+ *
+ * In a completed parse tree, those OpNodes that are themselves (roots of
+ * subexpression trees that are) operands of some operator store in their
+ * p.parent field a "pointer" to the OpNode of that operator.  The p.parent
+ * field permits a traversal of the tree within a * non-recursive routine
+ * (ConvertTreeToTokens() and CompileExprTree()).  This means that even
+ * expression trees of great depth pose no risk of blowing the C stack.
+ *
+ * While the parse tree is being constructed, the same memory space is used
+ * to hold the p.prev field which chains together a stack of incomplete
+ * trees awaiting their right operands.
+ *
+ * The lexeme field is filled in with the lexeme of the operator that is
+ * returned by the ParseLexeme() routine.  Only lexemes for unary and
+ * binary operators get stored in an OpNode.  Other lexmes get different
+ * treatement.
+ *
+ * The precedence field provides a place to store the precedence of the
+ * operator, so it need not be looked up again and again.
+ *
+ * The mark field is use to control the traversal of the tree, so
+ * that it can be done non-recursively.  The mark values are:
  */
 
-typedef struct ExprInfo {
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Parse *parsePtr;	/* Structure filled with information about
-				 * the parsed expression. */
-    CONST char *expr;		/* The expression that was originally passed
-				 * to TclCompileExpr. */
-    CONST char *lastChar;	/* Points just after last byte of expr. */
-    int hasOperators;		/* Set 1 if the expr has operators; 0 if
-				 * expr is only a primary. If 1 after
-				 * compiling an expr, a tryCvtToNumeric
-				 * instruction is emitted to convert the
-				 * primary to a number if possible. */
-} ExprInfo;
+enum Marks {
+    MARK_LEFT,		/* Next step of traversal is to visit left subtree */
+    MARK_RIGHT,		/* Next step of traversal is to visit right subtree */
+    MARK_PARENT		/* Next step of traversal is to return to parent */
+};
 
 /*
- * Definitions of numeric codes representing each expression operator.
- * The order of these must match the entries in the operatorTable below.
- * Also the codes for the relational operators (OP_LESS, OP_GREATER, 
- * OP_LE, OP_GE, OP_EQ, and OP_NE) must be consecutive and in that order.
- * Note that OP_PLUS and OP_MINUS represent both unary and binary operators.
+ * The constant field is a boolean flag marking which subexpressions are
+ * completely known at compile time, and are eligible for computing then
+ * rather than waiting until run time.
  */
 
-#define OP_MULT		0
-#define OP_DIVIDE	1
-#define OP_MOD		2
-#define OP_PLUS		3
-#define OP_MINUS	4
-#define OP_LSHIFT	5
-#define OP_RSHIFT	6
-#define OP_LESS		7
-#define OP_GREATER	8
-#define OP_LE		9
-#define OP_GE		10
-#define OP_EQ		11
-#define OP_NEQ		12
-#define OP_BITAND	13
-#define OP_BITXOR	14
-#define OP_BITOR	15
-#define OP_LAND		16
-#define OP_LOR		17
-#define OP_QUESTY	18
-#define OP_LNOT		19
-#define OP_BITNOT	20
-#define OP_STREQ	21
-#define OP_STRNEQ	22
+/*
+ * Each lexeme belongs to one of four categories, which determine
+ * its place in the parse tree.  We use the two high bits of the
+ * (unsigned char) value to store a NODE_TYPE code.
+ */
+
+#define NODE_TYPE	0xC0
+
+/*
+ * The four category values are LEAF, UNARY, and BINARY, explained below,
+ * and "uncategorized", which is used either temporarily, until context
+ * determines which of the other three categories is correct, or for
+ * lexemes like INVALID, which aren't really lexemes at all, but indicators
+ * of a parsing error.  Note that the codes must be distinct to distinguish
+ * categories, but need not take the form of a bit array.
+ */
 
+#define BINARY		0x40	/* This lexeme is a binary operator.  An
+				 * OpNode representing it should go into the
+				 * parse tree, and two operands should be
+				 * parsed for it in the expression.  */
+#define UNARY		0x80	/* This lexeme is a unary operator.  An OpNode
+				 * representing it should go into the parse
+				 * tree, and one operand should be parsed for
+				 * it in the expression. */
+#define LEAF		0xC0	/* This lexeme is a leaf operand in the parse
+				 * tree.  No OpNode will be placed in the tree
+				 * for it.  Either a literal value will be
+				 * appended to the list of literals in this
+				 * expression, or appropriate Tcl_Tokens will
+				 * be appended in a Tcl_Parse struct to
+				 * represent those leaves that require some
+				 * form of substitution.
+				 */
+
+/* Uncategorized lexemes */
+
+#define PLUS		1	/* Ambiguous.  Resolves to UNARY_PLUS or
+				 * BINARY_PLUS according to context. */
+#define MINUS		2	/* Ambiguous.  Resolves to UNARY_MINUS or
+				 * BINARY_MINUS according to context. */
+#define BAREWORD	3	/* Ambigous.  Resolves to BOOLEAN or to
+				 * FUNCTION or a parse error according to
+				 * context and value. */
+#define INCOMPLETE	4	/* A parse error.  Used only when the single
+				 * "=" is encountered.  */
+#define INVALID		5	/* A parse error.  Used when any punctuation
+				 * appears that's not a supported operator. */
+
+/* Leaf lexemes */
+
+#define NUMBER		( LEAF | 1)	/* For literal numbers */
+#define SCRIPT		( LEAF | 2)	/* Script substitution; [foo] */
+#define BOOLEAN		( LEAF | BAREWORD)	/* For literal booleans */
+#define BRACED		( LEAF | 4)	/* Braced string; {foo bar} */
+#define VARIABLE	( LEAF | 5)	/* Variable substitution; $x */
+#define QUOTED		( LEAF | 6)	/* Quoted string; "foo $bar [soom]" */
+#define EMPTY		( LEAF | 7)	/* Used only for an empty argument
+					 * list to a function.  Represents
+					 * the empty string within parens in
+					 * the expression: rand() */
+
+/* Unary operator lexemes */
+
+#define UNARY_PLUS	( UNARY | PLUS)
+#define UNARY_MINUS	( UNARY | MINUS)
+#define FUNCTION	( UNARY | BAREWORD)	/* This is a bit of "creative
+					 * interpretation" on the part of the
+					 * parser.  A function call is parsed
+					 * into the parse tree according to
+					 * the perspective that the function
+					 * name is a unary operator and its
+					 * argument list, enclosed in parens,
+					 * is its operand.  The additional
+					 * requirements not implied generally
+					 * by treatment as a unary operator --
+					 * for example, the requirement that
+					 * the operand be enclosed in parens --
+					 * are hard coded in the relevant
+					 * portions of ParseExpr().  We trade
+					 * off the need to include such
+					 * exceptional handling in the code
+					 * against the need we would otherwise
+					 * have for more lexeme categories. */
+#define START		( UNARY | 4)	/* This lexeme isn't parsed from the
+					 * expression text at all.  It
+					 * represents the start of the
+					 * expression and sits at the root of
+					 * the parse tree where it serves as
+					 * the start/end point of traversals. */
+#define OPEN_PAREN	( UNARY | 5)	/* Another bit of creative
+					 * interpretation, where we treat "("
+					 * as a unary operator with the
+					 * sub-expression between it and its
+					 * matching ")" as its operand. See
+					 * CLOSE_PAREN below. */
+#define NOT		( UNARY | 6)
+#define BIT_NOT		( UNARY | 7)
+
+/* Binary operator lexemes */
+
+#define BINARY_PLUS	( BINARY |  PLUS)
+#define BINARY_MINUS	( BINARY |  MINUS)
+#define COMMA		( BINARY |  3)	/* The "," operator is a low precedence
+					 * binary operator that separates the
+					 * arguments in a function call.  The
+					 * additional constraint that this
+					 * operator can only legally appear
+					 * at the right places within a
+					 * function call argument list are
+					 * hard coded within ParseExpr().  */
+#define MULT		( BINARY |  4)
+#define DIVIDE		( BINARY |  5)
+#define MOD		( BINARY |  6)
+#define LESS		( BINARY |  7)
+#define GREATER		( BINARY |  8)
+#define BIT_AND		( BINARY |  9)
+#define BIT_XOR		( BINARY | 10)
+#define BIT_OR		( BINARY | 11)
+#define QUESTION	( BINARY | 12)	/* These two lexemes make up the */
+#define COLON		( BINARY | 13)	/* ternary conditional operator,
+					 * $x ? $y : $z .  We treat them as
+					 * two binary operators to avoid
+					 * another lexeme category, and
+					 * code the additional constraints
+					 * directly in ParseExpr().  For
+					 * instance, the right operand of
+					 * a "?" operator must be a ":"
+					 * operator. */
+#define LEFT_SHIFT	( BINARY | 14)
+#define RIGHT_SHIFT	( BINARY | 15)
+#define LEQ		( BINARY | 16)
+#define GEQ		( BINARY | 17)
+#define EQUAL		( BINARY | 18)
+#define NEQ		( BINARY | 19)
+#define AND		( BINARY | 20)
+#define OR		( BINARY | 21)
+#define STREQ		( BINARY | 22)
+#define STRNEQ		( BINARY | 23)
+#define EXPON		( BINARY | 24)	/* Unlike the other binary operators,
+					 * EXPON is right associative and this
+					 * distinction is coded directly in
+					 * ParseExpr(). */
+#define IN_LIST		( BINARY | 25)
+#define NOT_IN_LIST	( BINARY | 26)
+#define CLOSE_PAREN	( BINARY | 27)	/* By categorizing the CLOSE_PAREN
+					 * lexeme as a BINARY operator, the
+					 * normal parsing rules for binary
+					 * operators assure that a close paren
+					 * will not directly follow another
+					 * operator, and the machinery already
+					 * in place to connect operands to
+					 * operators according to precedence
+					 * performs most of the work of
+					 * matching open and close parens for
+					 * us.  In the end though, a close
+					 * paren is not really a binary
+					 * operator, and some special coding
+					 * in ParseExpr() make sure we never
+					 * put an actual CLOSE_PAREN node
+					 * in the parse tree.   The
+					 * sub-expression between parens
+					 * becomes the single argument of
+					 * the matching OPEN_PAREN unary
+					 * operator. */
+#define END		( BINARY | 28)	/* This lexeme represents the end of
+					 * the string being parsed.  Treating
+					 * it as a binary operator follows the
+					 * same logic as the CLOSE_PAREN lexeme
+					 * and END pairs with START, in the
+					 * same way that CLOSE_PAREN pairs with
+					 * OPEN_PAREN. */
 /*
- * Table describing the expression operators. Entries in this table must
- * correspond to the definitions of numeric codes for operators just above.
+ * When ParseExpr() builds the parse tree it must choose which operands to
+ * connect to which operators.  This is done according to operator precedence.
+ * The greater an operator's precedence the greater claim it has to link to
+ * an available operand.  The Precedence enumeration lists the precedence
+ * values used by Tcl expression operators, from lowest to highest claim.
+ * Each precedence level is commented with the operators that hold that
+ * precedence.
  */
 
-static int opTableInitialized = 0; /* 0 means not yet initialized. */
-
-TCL_DECLARE_MUTEX(opMutex)
-
-typedef struct OperatorDesc {
-    CONST char *name;			/* Name of the operator. */
-    int numOperands;		/* Number of operands. 0 if the operator
-				 * requires special handling. */
-    int instruction;		/* Instruction opcode for the operator.
-				 * Ignored if numOperands is 0. */
-} OperatorDesc;
-
-static CONST OperatorDesc operatorTable[] = {
-    {"*",   2,  INST_MULT},
-    {"/",   2,  INST_DIV},
-    {"%",   2,  INST_MOD},
-    {"+",   0,  0},
-    {"-",   0,  0},
-    {"<<",  2,  INST_LSHIFT},
-    {">>",  2,  INST_RSHIFT},
-    {"<",   2,  INST_LT},
-    {">",   2,  INST_GT},
-    {"<=",  2,  INST_LE},
-    {">=",  2,  INST_GE},
-    {"==",  2,  INST_EQ},
-    {"!=",  2,  INST_NEQ},
-    {"&",   2,  INST_BITAND},
-    {"^",   2,  INST_BITXOR},
-    {"|",   2,  INST_BITOR},
-    {"&&",  0,  0},
-    {"||",  0,  0},
-    {"?",   0,  0},
-    {"!",   1,  INST_LNOT},
-    {"~",   1,  INST_BITNOT},
-    {"eq",  2,  INST_STR_EQ},
-    {"ne",  2,  INST_STR_NEQ},
-    {NULL,  0,  0}
+enum Precedence {
+    PREC_END = 1,	/* END */
+    PREC_START,		/* START */
+    PREC_CLOSE_PAREN,	/* ")" */
+    PREC_OPEN_PAREN,	/* "(" */
+    PREC_COMMA,		/* "," */
+    PREC_CONDITIONAL,	/* "?", ":" */
+    PREC_OR,		/* "||" */
+    PREC_AND,		/* "&&" */
+    PREC_BIT_OR,	/* "|" */
+    PREC_BIT_XOR,	/* "^" */
+    PREC_BIT_AND,	/* "&" */
+    PREC_EQUAL,		/* "==", "!=", "eq", "ne", "in", "ni" */
+    PREC_COMPARE,	/* "<", ">", "<=", ">=" */
+    PREC_SHIFT,		/* "<<", ">>" */
+    PREC_ADD,		/* "+", "-" */
+    PREC_MULT,		/* "*", "/", "%" */
+    PREC_EXPON,		/* "**" */
+    PREC_UNARY		/* "+", "-", FUNCTION, "!", "~" */
 };
 
 /*
- * Hashtable used to map the names of expression operators to the index
- * of their OperatorDesc description.
+ * Here the same information contained in the comments above is stored
+ * in inverted form, so that given a lexeme, one can quickly look up
+ * its precedence value.
  */
 
-static Tcl_HashTable opHashTable;
+static const unsigned char prec[] = {
+    /* Non-operator lexemes */
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,
+    /* Binary operator lexemes */
+    PREC_ADD,		/* BINARY_PLUS */
+    PREC_ADD,		/* BINARY_MINUS */
+    PREC_COMMA,		/* COMMA */
+    PREC_MULT,		/* MULT */
+    PREC_MULT,		/* DIVIDE */
+    PREC_MULT,		/* MOD */
+    PREC_COMPARE,	/* LESS */
+    PREC_COMPARE,	/* GREATER */
+    PREC_BIT_AND,	/* BIT_AND */
+    PREC_BIT_XOR,	/* BIT_XOR */
+    PREC_BIT_OR,	/* BIT_OR */
+    PREC_CONDITIONAL,	/* QUESTION */
+    PREC_CONDITIONAL,	/* COLON */
+    PREC_SHIFT,		/* LEFT_SHIFT */
+    PREC_SHIFT,		/* RIGHT_SHIFT */
+    PREC_COMPARE,	/* LEQ */
+    PREC_COMPARE,	/* GEQ */
+    PREC_EQUAL,		/* EQUAL */
+    PREC_EQUAL,		/* NEQ */
+    PREC_AND,		/* AND */
+    PREC_OR,		/* OR */
+    PREC_EQUAL,		/* STREQ */
+    PREC_EQUAL,		/* STRNEQ */
+    PREC_EXPON,		/* EXPON */
+    PREC_EQUAL,		/* IN_LIST */
+    PREC_EQUAL,		/* NOT_IN_LIST */
+    PREC_CLOSE_PAREN,	/* CLOSE_PAREN */
+    PREC_END,		/* END */
+    /* Expansion room for more binary operators */
+    0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,
+    /* Unary operator lexemes */
+    PREC_UNARY,		/* UNARY_PLUS */
+    PREC_UNARY,		/* UNARY_MINUS */
+    PREC_UNARY,		/* FUNCTION */
+    PREC_START,		/* START */
+    PREC_OPEN_PAREN,	/* OPEN_PAREN */
+    PREC_UNARY,		/* NOT*/
+    PREC_UNARY,		/* BIT_NOT*/
+};
 
 /*
- * Declarations for local procedures to this file:
+ * A table mapping lexemes to bytecode instructions, used by CompileExprTree().
  */
 
-static int		CompileCondExpr _ANSI_ARGS_((
-			    Tcl_Token *exprTokenPtr, ExprInfo *infoPtr,
-			    CompileEnv *envPtr, Tcl_Token **endPtrPtr));
-static int		CompileLandOrLorExpr _ANSI_ARGS_((
-			    Tcl_Token *exprTokenPtr, int opIndex,
-			    ExprInfo *infoPtr, CompileEnv *envPtr,
-			    Tcl_Token **endPtrPtr));
-static int		CompileMathFuncCall _ANSI_ARGS_((
-			    Tcl_Token *exprTokenPtr, CONST char *funcName,
-			    ExprInfo *infoPtr, CompileEnv *envPtr,
-			    Tcl_Token **endPtrPtr));
-static int		CompileSubExpr _ANSI_ARGS_((
-			    Tcl_Token *exprTokenPtr, ExprInfo *infoPtr,
-			    CompileEnv *envPtr));
-static void		LogSyntaxError _ANSI_ARGS_((ExprInfo *infoPtr));
+static const unsigned char instruction[] = {
+    /* Non-operator lexemes */
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,
+    /* Binary operator lexemes */
+    INST_ADD,		/* BINARY_PLUS */
+    INST_SUB,		/* BINARY_MINUS */
+    0,			/* COMMA */
+    INST_MULT,		/* MULT */
+    INST_DIV,		/* DIVIDE */
+    INST_MOD,		/* MOD */
+    INST_LT,		/* LESS */
+    INST_GT,		/* GREATER */
+    INST_BITAND,	/* BIT_AND */
+    INST_BITXOR,	/* BIT_XOR */
+    INST_BITOR,		/* BIT_OR */
+    0,			/* QUESTION */
+    0,			/* COLON */
+    INST_LSHIFT,	/* LEFT_SHIFT */
+    INST_RSHIFT,	/* RIGHT_SHIFT */
+    INST_LE,		/* LEQ */
+    INST_GE,		/* GEQ */
+    INST_EQ,		/* EQUAL */
+    INST_NEQ,		/* NEQ */
+    0,			/* AND */
+    0,			/* OR */
+    INST_STR_EQ,	/* STREQ */
+    INST_STR_NEQ,	/* STRNEQ */
+    INST_EXPON,		/* EXPON */
+    INST_LIST_IN,	/* IN_LIST */
+    INST_LIST_NOT_IN,	/* NOT_IN_LIST */
+    0,			/* CLOSE_PAREN */
+    0,			/* END */
+    /* Expansion room for more binary operators */
+    0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
+    0,
+    /* Unary operator lexemes */
+    INST_UPLUS,		/* UNARY_PLUS */
+    INST_UMINUS,	/* UNARY_MINUS */
+    0,			/* FUNCTION */
+    0,			/* START */
+    0,			/* OPEN_PAREN */
+    INST_LNOT,		/* NOT*/
+    INST_BITNOT,	/* BIT_NOT*/
+};
 
 /*
- * Macro used to debug the execution of the expression compiler.
+ * A table mapping a byte value to the corresponding lexeme for use by
+ * ParseLexeme().
  */
 
-#ifdef TCL_COMPILE_DEBUG
-#define TRACE(exprBytes, exprLength, tokenBytes, tokenLength) \
-    if (traceExprComp) { \
-	fprintf(stderr, "CompileSubExpr: \"%.*s\", token \"%.*s\"\n", \
-	        (exprLength), (exprBytes), (tokenLength), (tokenBytes)); \
-    }
-#else
-#define TRACE(exprBytes, exprLength, tokenBytes, tokenLength)
-#endif /* TCL_COMPILE_DEBUG */
+static const unsigned char Lexeme[] = {
+	INVALID		/* NUL */,	INVALID		/* SOH */,
+	INVALID		/* STX */,	INVALID		/* ETX */,
+	INVALID		/* EOT */,	INVALID		/* ENQ */,
+	INVALID		/* ACK */,	INVALID		/* BEL */,
+	INVALID		/* BS */,	INVALID		/* HT */,
+	INVALID		/* LF */,	INVALID		/* VT */,
+	INVALID		/* FF */,	INVALID		/* CR */,
+	INVALID		/* SO */,	INVALID		/* SI */,
+	INVALID		/* DLE */,	INVALID		/* DC1 */,
+	INVALID		/* DC2 */,	INVALID		/* DC3 */,
+	INVALID		/* DC4 */,	INVALID		/* NAK */,
+	INVALID		/* SYN */,	INVALID		/* ETB */,
+	INVALID		/* CAN */,	INVALID		/* EM */,
+	INVALID		/* SUB */,	INVALID		/* ESC */,
+	INVALID		/* FS */,	INVALID		/* GS */,
+	INVALID		/* RS */,	INVALID		/* US */,
+	INVALID		/* SPACE */,	0 		/* ! or != */,
+	QUOTED		/* " */,	INVALID		/* # */,
+	VARIABLE	/* $ */,	MOD		/* % */,
+	0		/* & or && */,	INVALID		/* ' */,
+	OPEN_PAREN	/* ( */,	CLOSE_PAREN	/* ) */,
+	0		/* * or ** */,	PLUS		/* + */,
+	COMMA		/* , */,	MINUS		/* - */,
+	0		/* . */,	DIVIDE		/* / */,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0,			/* 0-9 */
+	COLON		/* : */,	INVALID		/* ; */,
+	0		/* < or << or <= */,
+	0		/* == or INVALID */,
+	0		/* > or >> or >= */,
+	QUESTION	/* ? */,	INVALID		/* @ */,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,		/* A-M */
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,		/* N-Z */
+	SCRIPT		/* [ */,	INVALID		/* \ */,
+	INVALID		/* ] */,	BIT_XOR		/* ^ */,
+	INVALID		/* _ */,	INVALID		/* ` */,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,		/* a-m */
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,		/* n-z */
+	BRACED		/* { */,	0		/* | or || */,
+	INVALID		/* } */,	BIT_NOT		/* ~ */,
+	INVALID		/* DEL */
+};
+
+/*
+ * The JumpList struct is used to create a stack of data needed for the
+ * TclEmitForwardJump() and TclFixupForwardJump() calls that are performed
+ * when compiling the short-circuiting operators QUESTION/COLON, AND, and OR.
+ * Keeping a stack permits the CompileExprTree() routine to be non-recursive.
+ */
+
+typedef struct JumpList {
+    JumpFixup jump;		/* Pass this argument to matching calls of
+				 * TclEmitForwardJump() and
+				 * TclFixupForwardJump(). */
+    int depth;			/* Remember the currStackDepth of the
+				 * CompileEnv here. */
+    int offset;			/* Data used to compute jump lengths to pass
+				 * to TclFixupForwardJump() */
+    int convert;		/* Temporary storage used to compute whether
+				 * numeric conversion will be needed following
+				 * the operator we're compiling. */
+    struct JumpList *next;	/* Point to next item on the stack */
+} JumpList;
+
+/*
+ * Declarations for local functions to this file:
+ */
+
+static void		CompileExprTree(Tcl_Interp *interp, OpNode *nodes,
+			    int index, Tcl_Obj *const **litObjvPtr,
+			    Tcl_Obj *const *funcObjv, Tcl_Token *tokenPtr,
+			    CompileEnv *envPtr, int optimize);
+static void		ConvertTreeToTokens(const char *start, int numBytes,
+			    OpNode *nodes, Tcl_Token *tokenPtr,
+			    Tcl_Parse *parsePtr);
+static int		ExecConstantExprTree(Tcl_Interp *interp, OpNode *nodes,
+			    int index, Tcl_Obj * const **litObjvPtr);
+static int		ParseExpr(Tcl_Interp *interp, const char *start,
+			    int numBytes, OpNode **opTreePtr,
+			    Tcl_Obj *litList, Tcl_Obj *funcList,
+			    Tcl_Parse *parsePtr, int parseOnly);
+static int		ParseLexeme(const char *start, int numBytes,
+			    unsigned char *lexemePtr, Tcl_Obj **literalPtr);
+
 
 /*
  *----------------------------------------------------------------------
  *
- * TclCompileExpr --
+ * ParseExpr --
  *
- *	This procedure compiles a string containing a Tcl expression into
- *	Tcl bytecodes. This procedure is the top-level interface to the
- *	the expression compilation module, and is used by such public
- *	procedures as Tcl_ExprString, Tcl_ExprStringObj, Tcl_ExprLong,
- *	Tcl_ExprDouble, Tcl_ExprBoolean, and Tcl_ExprBooleanObj.
+ *	Given a string, the numBytes bytes starting at start, this function
+ *	parses it as a Tcl expression and constructs a tree representing
+ *	the structure of the expression.  The caller must pass in empty
+ * 	lists as the funcList and litList arguments.  The elements of the
+ *	parsed expression are returned to the caller as that tree, a list of
+ *	literal values, a list of function names, and in Tcl_Tokens
+ *	added to a Tcl_Parse struct passed in by the caller.
  *
  * Results:
- *	The return value is TCL_OK on a successful compilation and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
+ *	If the string is successfully parsed as a valid Tcl expression, TCL_OK
+ *	is returned, and data about the expression structure is written to
+ *	the last four arguments.  If the string cannot be parsed as a valid
+ *	Tcl expression, TCL_ERROR is returned, and if interp is non-NULL, an
+ *	error message is written to interp.
  *
  * Side effects:
- *	Adds instructions to envPtr to evaluate the expression at runtime.
+ *	Memory will be allocated.  If TCL_OK is returned, the caller must
+ *	clean up the returned data structures.  The (OpNode *) value written
+ *	to opTreePtr should be passed to ckfree() and the parsePtr argument
+ *	should be passed to Tcl_FreeParse().  The elements appended to the
+ *	litList and funcList will automatically be freed whenever the
+ *	refcount on those lists indicates they can be freed.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclCompileExpr(interp, script, numBytes, envPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    CONST char *script;		/* The source script to compile. */
-    int numBytes;		/* Number of bytes in script. If < 0, the
-				 * string consists of all bytes up to the
-				 * first null character. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+static int
+ParseExpr(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    const char *start,		/* Start of source string to parse. */
+    int numBytes,		/* Number of bytes in string. */
+    OpNode **opTreePtr,		/* Points to space where a pointer to the
+				 * allocated OpNode tree should go. */
+    Tcl_Obj *litList,		/* List to append literals to. */
+    Tcl_Obj *funcList,		/* List to append function names to. */
+    Tcl_Parse *parsePtr,	/* Structure to fill with tokens representing
+				 * those operands that require run time
+				 * substitutions. */
+    int parseOnly)		/* A boolean indicating whether the caller's
+				 * aim is just a parse, or whether it will go
+				 * on to compile the expression.  Different
+				 * optimizations are appropriate for the
+				 * two scenarios. */
 {
-    ExprInfo info;
-    Tcl_Parse parse;
-    Tcl_HashEntry *hPtr;
-    int new, i, code;
+    OpNode *nodes = NULL;	/* Pointer to the OpNode storage array where
+				 * we build the parse tree. */
+    int nodesAvailable = 64;	/* Initial size of the storage array.  This
+				 * value establishes a minimum tree memory cost
+				 * of only about 1 kibyte, and is large enough
+				 * for most expressions to parse with no need
+				 * for array growth and reallocation. */
+    int nodesUsed = 0;		/* Number of OpNodes filled. */
+    int scanned = 0;		/* Capture number of byte scanned by
+				 * parsing routines. */
+    int lastParsed;		/* Stores info about what the lexeme parsed
+				 * the previous pass through the parsing loop
+				 * was.  If it was an operator, lastParsed is
+				 * the index of the OpNode for that operator.
+				 * If it was not an operator, lastParsed holds
+				 * an OperandTypes value encoding what we
+				 * need to know about it. */
+    int incomplete;		/* Index of the most recent incomplete tree
+				 * in the OpNode array.  Heads a stack of
+				 * incomplete trees linked by p.prev. */
+    int complete = OT_EMPTY;	/* "Index" of the complete tree (that is, a
+				 * complete subexpression) determined at the
+				 * moment.   OT_EMPTY is a nonsense value
+				 * used only to silence compiler warnings.
+				 * During a parse, complete will always hold
+				 * an index or an OperandTypes value pointing
+				 * to an actual leaf at the time the complete
+				 * tree is needed. */
+
+    /* These variables control generation of the error message. */
+    Tcl_Obj *msg = NULL;	/* The error message. */
+    Tcl_Obj *post = NULL;	/* In a few cases, an additional postscript
+				 * for the error message, supplying more
+				 * information after the error msg and
+				 * location have been reported. */
+    const char *mark = "_@_";	/* In the portion of the complete error message
+				 * where the error location is reported, this
+				 * "mark" substring is inserted into the
+				 * string being parsed to aid in pinpointing
+				 * the location of the syntax error in the
+				 * expression. */
+    int insertMark = 0;		/* A boolean controlling whether the "mark"
+				 * should be inserted. */
+    const int limit = 25;	/* Portions of the error message are
+				 * constructed out of substrings of the
+				 * original expression.  In order to keep the
+				 * error message readable, we impose this limit
+				 * on the substring size we extract. */
+
+    TclParseInit(interp, start, numBytes, parsePtr);
+
+    nodes = (OpNode *) attemptckalloc(nodesAvailable * sizeof(OpNode));
+    if (nodes == NULL) {
+	TclNewLiteralStringObj(msg, "not enough memory to parse expression");
+	goto error;
+    }
+
+    /* Initialize the parse tree with the special "START" node. */
+    nodes->lexeme = START;
+    nodes->precedence = prec[START];
+    nodes->mark = MARK_RIGHT;
+    nodes->constant = 1;
+    incomplete = lastParsed = nodesUsed;
+    nodesUsed++;
 
     /*
-     * If this is the first time we've been called, initialize the table
-     * of expression operators.
+     * Main parsing loop parses one lexeme per iteration.  We exit the
+     * loop only when there's a syntax error with a "goto error" which
+     * takes us to the error handling code following the loop, or when
+     * we've successfully completed the parse and we return to the caller.
      */
 
-    if (numBytes < 0) {
-	numBytes = (script? strlen(script) : 0);
-    }
-    if (!opTableInitialized) {
-	Tcl_MutexLock(&opMutex);
-	if (!opTableInitialized) {
-	    Tcl_InitHashTable(&opHashTable, TCL_STRING_KEYS);
-	    for (i = 0;  operatorTable[i].name != NULL;  i++) {
-		hPtr = Tcl_CreateHashEntry(&opHashTable,
-			operatorTable[i].name, &new);
-		if (new) {
-		    Tcl_SetHashValue(hPtr, (ClientData) i);
-		}
+    while (1) {
+	OpNode *nodePtr;	/* Points to the OpNode we may fill this
+				 * pass through the loop. */
+	unsigned char lexeme;	/* The lexeme we parse this iteration. */
+	Tcl_Obj *literal;	/* Filled by the ParseLexeme() call when
+				 * a literal is parsed that has a Tcl_Obj
+				 * rep worth preserving. */
+
+	/*
+	 * Each pass through this loop adds up to one more OpNode. Allocate
+	 * space for one if required.
+	 */
+
+	if (nodesUsed >= nodesAvailable) {
+	    int size = nodesUsed * 2;
+	    OpNode *newPtr;
+
+	    do {
+		newPtr = (OpNode *) attemptckrealloc((char *) nodes,
+			(unsigned int) size * sizeof(OpNode));
+	    } while ((newPtr == NULL)
+		    && ((size -= (size - nodesUsed) / 2) > nodesUsed));
+	    if (newPtr == NULL) {
+		TclNewLiteralStringObj(msg,
+			"not enough memory to parse expression");
+		goto error;
 	    }
-	    opTableInitialized = 1;
+	    nodesAvailable = size;
+	    nodes = newPtr;
 	}
-	Tcl_MutexUnlock(&opMutex);
-    }
+	nodePtr = nodes + nodesUsed;
+
+	/* Skip white space between lexemes. */
+	scanned = TclParseAllWhiteSpace(start, numBytes);
+	start += scanned;
+	numBytes -= scanned;
+
+	scanned = ParseLexeme(start, numBytes, &lexeme, &literal);
+
+	/* Use context to categorize the lexemes that are ambiguous. */
+	if ((NODE_TYPE & lexeme) == 0) {
+	    switch (lexeme) {
+	    case INVALID:
+		msg = Tcl_ObjPrintf(
+			"invalid character \"%.*s\"", scanned, start);
+		goto error;
+	    case INCOMPLETE:
+		msg = Tcl_ObjPrintf(
+			"incomplete operator \"%.*s\"", scanned, start);
+		goto error;
+	    case BAREWORD:
+
+		/*
+		 * Most barewords in an expression are a syntax error.
+		 * The exceptions are that when a bareword is followed by
+		 * an open paren, it might be a function call, and when the
+		 * bareword is a legal literal boolean value, we accept that
+		 * as well.
+		 */
+
+		if (start[scanned+TclParseAllWhiteSpace(
+			start+scanned, numBytes-scanned)] == '(') {
+		    lexeme = FUNCTION;
 
-    /*
-     * Initialize the structure containing information abvout this
-     * expression compilation.
-     */
+		    /*
+		     * When we compile the expression we'll need the function
+		     * name, and there's no place in the parse tree to store
+		     * it, so we keep a separate list of all the function
+		     * names we've parsed in the order we found them.
+		     */
 
-    info.interp = interp;
-    info.parsePtr = &parse;
-    info.expr = script;
-    info.lastChar = (script + numBytes); 
-    info.hasOperators = 0;
+		    Tcl_ListObjAppendElement(NULL, funcList, literal);
+		} else {
+		    int b;
+		    if (Tcl_GetBooleanFromObj(NULL, literal, &b) == TCL_OK) {
+			lexeme = BOOLEAN;
+		    } else {
+			Tcl_DecrRefCount(literal);
+			msg = Tcl_ObjPrintf(
+				"invalid bareword \"%.*s%s\"",
+				(scanned < limit) ? scanned : limit - 3, start,
+				(scanned < limit) ? "" : "...");
+			post = Tcl_ObjPrintf(
+				"should be \"$%.*s%s\" or \"{%.*s%s}\"",
+				(scanned < limit) ? scanned : limit - 3,
+				start, (scanned < limit) ? "" : "...",
+				(scanned < limit) ? scanned : limit - 3,
+				start, (scanned < limit) ? "" : "...");
+			Tcl_AppendPrintfToObj(post,
+				" or \"%.*s%s(...)\" or ...",
+				(scanned < limit) ? scanned : limit - 3,
+				start, (scanned < limit) ? "" : "...");
+			if (start[0] == '0') {
+			    const char *stop;
+			    TclParseNumber(NULL, NULL, NULL, start, scanned,
+				    &stop, TCL_PARSE_NO_WHITESPACE);
+
+			    if (isdigit(UCHAR(*stop)) || (stop == start + 1)) {
+				parsePtr->errorType = TCL_PARSE_BAD_NUMBER;
+
+				switch (start[1]) {
+				case 'b':
+				    Tcl_AppendToObj(post,
+					    " (invalid binary number?)", -1);
+				    break;
+				case 'o':
+				    Tcl_AppendToObj(post,
+					    " (invalid octal number?)", -1);
+				    break;
+				default:
+				    if (isdigit(UCHAR(start[1]))) {
+				        Tcl_AppendToObj(post,
+						" (invalid octal number?)", -1);
+				    }
+				    break;
+				}
+			    }
+			}
+			goto error;
+		    }
+		}
+		break;
+	    case PLUS:
+	    case MINUS:
+		if (IsOperator(lastParsed)) {
+
+		    /*
+		     * A "+" or "-" coming just after another operator
+		     * must be interpreted as a unary operator.
+		     */
+
+		    lexeme |= UNARY;
+		} else {
+		    lexeme |= BINARY;
+		}
+	    }
+	}	/* Uncategorized lexemes */
+
+	/* Handle lexeme based on its category. */
+	switch (NODE_TYPE & lexeme) {
+
+	/*
+	 * Each LEAF results in either a literal getting appended to the
+	 * litList, or a sequence of Tcl_Tokens representing a Tcl word
+	 * getting appended to the parsePtr->tokens.  No OpNode is filled
+	 * for this lexeme.
+	 */
+
+	case LEAF: {
+	    Tcl_Token *tokenPtr;
+	    const char *end = start;
+	    int wordIndex;
+	    int code = TCL_OK;
+
+	    /*
+	     * A leaf operand appearing just after something that's not an
+	     * operator is a syntax error.
+	     */
+
+	    if (NotOperator(lastParsed)) {
+		msg = Tcl_ObjPrintf("missing operator at %s", mark);
+		scanned = 0;
+		insertMark = 1;
+
+		/* Free any literal to avoid a memleak. */
+		if ((lexeme == NUMBER) || (lexeme == BOOLEAN)) {
+		    Tcl_DecrRefCount(literal);
+		}
+		goto error;
+	    }
+
+	    switch (lexeme) {
+	    case NUMBER:
+	    case BOOLEAN:
+		/*
+		 * TODO: Consider using a dict or hash to collapse all
+		 * duplicate literals into a single representative value.
+		 * (Like what is done with [split $s {}]).
+		 * Pro:	~75% memory saving on expressions like
+		 *	{1+1+1+1+1+.....+1} (Convert "pointer + Tcl_Obj" cost
+		 *	to "pointer" cost only)
+		 * Con:	Cost of the dict store/retrieve on every literal
+		 *	in every expression when expressions like the above
+		 *	tend to be uncommon.
+		 *	The memory savings is temporary; Compiling to bytecode
+		 *	will collapse things as literals are registered
+		 * 	anyway, so the savings applies only to the time
+		 *	between parsing and compiling.  Possibly important
+		 *	due to high-water mark nature of memory allocation.
+		 */
+		Tcl_ListObjAppendElement(NULL, litList, literal);
+		complete = lastParsed = OT_LITERAL;
+		start += scanned;
+		numBytes -= scanned;
+		continue;
+
+	    default:
+		break;
+	    }
+
+	    /*
+	     * Remaining LEAF cases may involve filling Tcl_Tokens, so
+	     * make room for at least 2 more tokens.
+	     */
+
+	    TclGrowParseTokenArray(parsePtr, 2);
+	    wordIndex = parsePtr->numTokens;
+	    tokenPtr = parsePtr->tokenPtr + wordIndex;
+	    tokenPtr->type = TCL_TOKEN_WORD;
+	    tokenPtr->start = start;
+	    parsePtr->numTokens++;
+
+	    switch (lexeme) {
+	    case QUOTED:
+		code = Tcl_ParseQuotedString(NULL, start, numBytes,
+			parsePtr, 1, &end);
+		scanned = end - start;
+		break;
+
+	    case BRACED:
+		code = Tcl_ParseBraces(NULL, start, numBytes,
+			    parsePtr, 1, &end);
+		scanned = end - start;
+		break;
+
+	    case VARIABLE:
+		code = Tcl_ParseVarName(NULL, start, numBytes, parsePtr, 1);
+
+		/*
+		 * Handle the quirk that Tcl_ParseVarName reports a successful
+		 * parse even when it gets only a "$" with no variable name.
+		 */
+
+		tokenPtr = parsePtr->tokenPtr + wordIndex + 1;
+		if (code == TCL_OK && tokenPtr->type != TCL_TOKEN_VARIABLE) {
+		    TclNewLiteralStringObj(msg, "invalid character \"$\"");
+		    goto error;
+		}
+		scanned = tokenPtr->size;
+		break;
+
+	    case SCRIPT: {
+		Tcl_Parse *nestedPtr =
+			(Tcl_Parse *) TclStackAlloc(interp, sizeof(Tcl_Parse));
+
+		tokenPtr = parsePtr->tokenPtr + parsePtr->numTokens;
+		tokenPtr->type = TCL_TOKEN_COMMAND;
+		tokenPtr->start = start;
+		tokenPtr->numComponents = 0;
+
+		end = start + numBytes;
+		start++;
+		while (1) {
+		    code = Tcl_ParseCommand(interp, start, (end - start), 1,
+			    nestedPtr);
+		    if (code != TCL_OK) {
+			parsePtr->term = nestedPtr->term;
+			parsePtr->errorType = nestedPtr->errorType;
+			parsePtr->incomplete = nestedPtr->incomplete;
+			break;
+		    }
+		    start = (nestedPtr->commandStart + nestedPtr->commandSize);
+		    Tcl_FreeParse(nestedPtr);
+		    if ((nestedPtr->term < end) && (*(nestedPtr->term) == ']')
+			    && !(nestedPtr->incomplete)) {
+			break;
+		    }
+
+		    if (start == end) {
+			TclNewLiteralStringObj(msg, "missing close-bracket");
+			parsePtr->term = tokenPtr->start;
+			parsePtr->errorType = TCL_PARSE_MISSING_BRACKET;
+			parsePtr->incomplete = 1;
+			code = TCL_ERROR;
+			break;
+		    }
+		}
+		TclStackFree(interp, nestedPtr);
+		end = start;
+		start = tokenPtr->start;
+		scanned = end - start;
+		tokenPtr->size = scanned;
+		parsePtr->numTokens++;
+		break;
+	    }
+	    }
+	    if (code != TCL_OK) {
+
+		/*
+		 * Here we handle all the syntax errors generated by
+		 * the Tcl_Token generating parsing routines called in the
+		 * switch just above.  If the value of parsePtr->incomplete
+		 * is 1, then the error was an unbalanced '[', '(', '{',
+		 * or '"' and parsePtr->term is pointing to that unbalanced
+		 * character.  If the value of parsePtr->incomplete is 0,
+		 * then the error is one of lacking whitespace following a
+		 * quoted word, for example: expr {[an error {foo}bar]},
+		 * and parsePtr->term points to where the whitespace is
+		 * missing.  We reset our values of start and scanned so that
+		 * when our error message is constructed, the location of
+		 * the syntax error is sure to appear in it, even if the
+		 * quoted expression is truncated.
+		 */
+
+		start = parsePtr->term;
+		scanned = parsePtr->incomplete;
+		goto error;
+	    }
+
+	    tokenPtr = parsePtr->tokenPtr + wordIndex;
+	    tokenPtr->size = scanned;
+	    tokenPtr->numComponents = parsePtr->numTokens - wordIndex - 1;
+	    if (!parseOnly && ((lexeme == QUOTED) || (lexeme == BRACED))) {
+
+		/*
+		 * When this expression is destined to be compiled, and a
+		 * braced or quoted word within an expression is known at
+		 * compile time (no runtime substitutions in it), we can
+		 * store it as a literal rather than in its tokenized form.
+		 * This is an advantage since the compiled bytecode is going
+		 * to need the argument in Tcl_Obj form eventually, so it's
+		 * just as well to get there now.  Another advantage is that
+		 * with this conversion, larger constant expressions might
+		 * be grown and optimized.
+		 *
+		 * On the contrary, if the end goal of this parse is to
+		 * fill a Tcl_Parse for a caller of Tcl_ParseExpr(), then it's
+		 * wasteful to convert to a literal only to convert back again
+		 * later.
+		 */
+
+		literal = Tcl_NewObj();
+		if (TclWordKnownAtCompileTime(tokenPtr, literal)) {
+		    Tcl_ListObjAppendElement(NULL, litList, literal);
+		    complete = lastParsed = OT_LITERAL;
+		    parsePtr->numTokens = wordIndex;
+		    break;
+		}
+		Tcl_DecrRefCount(literal);
+	    }
+	    complete = lastParsed = OT_TOKENS;
+	    break;
+	} /* case LEAF */
+
+	case UNARY:
+
+	    /*
+	     * A unary operator appearing just after something that's not an
+	     * operator is a syntax error -- something trying to be the left
+	     * operand of an operator that doesn't take one.
+	     */
+
+	    if (NotOperator(lastParsed)) {
+		msg = Tcl_ObjPrintf("missing operator at %s", mark);
+		scanned = 0;
+		insertMark = 1;
+		goto error;
+	    }
+
+	    /* Create an OpNode for the unary operator */
+	    nodePtr->lexeme = lexeme;
+	    nodePtr->precedence = prec[lexeme];
+	    nodePtr->mark = MARK_RIGHT;
+
+	    /*
+	     * A FUNCTION cannot be a constant expression, because Tcl allows
+	     * functions to return variable results with the same arguments;
+	     * for example, rand().  Other unary operators can root a constant
+	     * expression, so long as the argument is a constant expression.
+	     */
+
+	    nodePtr->constant = (lexeme != FUNCTION);
+
+	    /*
+	     * This unary operator is a new incomplete tree, so push it
+	     * onto our stack of incomplete trees.  Also remember it as
+	     * the last lexeme we parsed.
+	     */
+
+	    nodePtr->p.prev = incomplete;
+	    incomplete = lastParsed = nodesUsed;
+	    nodesUsed++;
+	    break;
+
+	case BINARY: {
+	    OpNode *incompletePtr;
+	    unsigned char precedence = prec[lexeme];
+
+	    /*
+	     * A binary operator appearing just after another operator is a
+	     * syntax error -- one of the two operators is missing an operand.
+	     */
+
+	    if (IsOperator(lastParsed)) {
+		if ((lexeme == CLOSE_PAREN)
+			&& (nodePtr[-1].lexeme == OPEN_PAREN)) {
+		    if (nodePtr[-2].lexeme == FUNCTION) {
+
+			/*
+			 * Normally, "()" is a syntax error, but as a special
+			 * case accept it as an argument list for a function.
+			 * Treat this as a special LEAF lexeme, and restart
+			 * the parsing loop with zero characters scanned.
+			 * We'll parse the ")" again the next time through,
+			 * but with the OT_EMPTY leaf as the subexpression
+			 * between the parens.
+			 */
+
+			scanned = 0;
+			complete = lastParsed = OT_EMPTY;
+			break;
+		    }
+		    msg = Tcl_ObjPrintf("empty subexpression at %s", mark);
+		    scanned = 0;
+		    insertMark = 1;
+		    goto error;
+		}
+
+		if (nodePtr[-1].precedence > precedence) {
+		    if (nodePtr[-1].lexeme == OPEN_PAREN) {
+			TclNewLiteralStringObj(msg, "unbalanced open paren");
+			parsePtr->errorType = TCL_PARSE_MISSING_PAREN;
+		    } else if (nodePtr[-1].lexeme == COMMA) {
+			msg = Tcl_ObjPrintf(
+				"missing function argument at %s", mark);
+			scanned = 0;
+			insertMark = 1;
+		    } else if (nodePtr[-1].lexeme == START) {
+			TclNewLiteralStringObj(msg, "empty expression");
+		    }
+		} else {
+		    if (lexeme == CLOSE_PAREN) {
+			TclNewLiteralStringObj(msg, "unbalanced close paren");
+		    } else if ((lexeme == COMMA)
+			    && (nodePtr[-1].lexeme == OPEN_PAREN)
+			    && (nodePtr[-2].lexeme == FUNCTION)) {
+			msg = Tcl_ObjPrintf(
+				"missing function argument at %s", mark);
+			scanned = 0;
+			insertMark = 1;
+		    }
+		}
+		if (msg == NULL) {
+		    msg = Tcl_ObjPrintf("missing operand at %s", mark);
+		    scanned = 0;
+		    insertMark = 1;
+		}
+		goto error;
+	    }
+
+	    /*
+	     * Here is where the tree comes together.  At this point, we
+	     * have a stack of incomplete trees corresponding to
+	     * substrings that are incomplete expressions, followed by
+	     * a complete tree corresponding to a substring that is itself
+	     * a complete expression, followed by the binary operator we have
+	     * just parsed.  The incomplete trees can each be completed by
+	     * adding a right operand.
+	     *
+	     * To illustrate with an example, when we parse the expression
+	     * "1+2*3-4" and we reach this point having just parsed the "-"
+	     * operator, we have these incomplete trees: START, "1+", and
+	     * "2*".  Next we have the complete subexpression "3".  Last is
+	     * the "-" we've just parsed.
+	     *
+	     * The next step is to join our complete tree to an operator.
+	     * The choice is governed by the precedence and associativity
+	     * of the competing operators.  If we connect it as the right
+	     * operand of our most recent incomplete tree, we get a new
+	     * complete tree, and we can repeat the process.  The while
+	     * loop following repeats this until precedence indicates it
+	     * is time to join the complete tree as the left operand of
+	     * the just parsed binary operator.
+	     *
+	     * Continuing the example, the first pass through the loop
+	     * will join "3" to "2*"; the next pass will join "2*3" to
+	     * "1+".  Then we'll exit the loop and join "1+2*3" to "-".
+	     * When we return to parse another lexeme, our stack of
+	     * incomplete trees is START and "1+2*3-".
+	     */
+
+	    while (1) {
+		incompletePtr = nodes + incomplete;
+
+		if (incompletePtr->precedence < precedence) {
+		    break;
+		}
+
+		if (incompletePtr->precedence == precedence) {
+
+		    /* Right association rules for exponentiation. */
+		    if (lexeme == EXPON) {
+			break;
+		    }
+
+		    /*
+		     * Special association rules for the conditional operators.
+		     * The "?" and ":" operators have equal precedence, but
+		     * must be linked up in sensible pairs.
+		     */
+
+		    if ((incompletePtr->lexeme == QUESTION)
+			    && (NotOperator(complete)
+			    || (nodes[complete].lexeme != COLON))) {
+			break;
+		    }
+		    if ((incompletePtr->lexeme == COLON)
+			    && (lexeme == QUESTION)) {
+			break;
+		    }
+		}
+
+		/* Some special syntax checks... */
+
+		/* Parens must balance */
+		if ((incompletePtr->lexeme == OPEN_PAREN)
+			&& (lexeme != CLOSE_PAREN)) {
+		    TclNewLiteralStringObj(msg, "unbalanced open paren");
+		    parsePtr->errorType = TCL_PARSE_MISSING_PAREN;
+		    goto error;
+		}
+
+		/* Right operand of "?" must be ":" */
+		if ((incompletePtr->lexeme == QUESTION)
+			&& (NotOperator(complete)
+			|| (nodes[complete].lexeme != COLON))) {
+		    msg = Tcl_ObjPrintf(
+			    "missing operator \":\" at %s", mark);
+		    scanned = 0;
+		    insertMark = 1;
+		    goto error;
+		}
+
+		/* Operator ":" may only be right operand of "?" */
+		if (IsOperator(complete)
+			&& (nodes[complete].lexeme == COLON)
+			&& (incompletePtr->lexeme != QUESTION)) {
+		    TclNewLiteralStringObj(msg,
+			    "unexpected operator \":\" "
+			    "without preceding \"?\"");
+		    goto error;
+		}
+
+		/*
+		 * Attach complete tree as right operand of most recent
+		 * incomplete tree.
+		 */
+
+		incompletePtr->right = complete;
+		if (IsOperator(complete)) {
+		    nodes[complete].p.parent = incomplete;
+		    incompletePtr->constant = incompletePtr->constant
+			    && nodes[complete].constant;
+		} else {
+		    incompletePtr->constant = incompletePtr->constant
+			    && (complete == OT_LITERAL);
+		}
+
+		/*
+		 * The QUESTION/COLON and FUNCTION/OPEN_PAREN combinations each
+		 * make up a single operator.  Force them to agree whether they
+		 * have a constant expression.
+		 */
+
+		if ((incompletePtr->lexeme == QUESTION)
+			|| (incompletePtr->lexeme == FUNCTION)) {
+		    nodes[complete].constant = incompletePtr->constant;
+		}
+
+		if (incompletePtr->lexeme == START) {
+
+		    /*
+		     * Completing the START tree indicates we're done.
+		     * Transfer the parse tree to the caller and return.
+		     */
+
+		    *opTreePtr = nodes;
+		    return TCL_OK;
+		}
+
+		/*
+		 * With a right operand attached, last incomplete tree has
+		 * become the complete tree.  Pop it from the incomplete
+		 * tree stack.
+		 */
+
+		complete = incomplete;
+		incomplete = incompletePtr->p.prev;
+
+		/* CLOSE_PAREN can only close one OPEN_PAREN. */
+		if (incompletePtr->lexeme == OPEN_PAREN) {
+		    break;
+		}
+	    }
+
+	    /* More syntax checks... */
+
+	    /* Parens must balance. */
+	    if (lexeme == CLOSE_PAREN) {
+		if (incompletePtr->lexeme != OPEN_PAREN) {
+		    TclNewLiteralStringObj(msg, "unbalanced close paren");
+		    goto error;
+		}
+	    }
+
+	    /* Commas must appear only in function argument lists. */
+	    if (lexeme == COMMA) {
+		if  ((incompletePtr->lexeme != OPEN_PAREN)
+			|| (incompletePtr[-1].lexeme != FUNCTION)) {
+		    TclNewLiteralStringObj(msg,
+			    "unexpected \",\" outside function argument list");
+		    goto error;
+		}
+	    }
+
+	    /* Operator ":" may only be right operand of "?" */
+	    if (IsOperator(complete) && (nodes[complete].lexeme == COLON)) {
+		TclNewLiteralStringObj(msg,
+			"unexpected operator \":\" without preceding \"?\"");
+		goto error;
+	    }
+
+	    /* Create no node for a CLOSE_PAREN lexeme. */
+	    if (lexeme == CLOSE_PAREN) {
+		break;
+	    }
+
+	    /* Link complete tree as left operand of new node. */
+	    nodePtr->lexeme = lexeme;
+	    nodePtr->precedence = precedence;
+	    nodePtr->mark = MARK_LEFT;
+	    nodePtr->left = complete;
+
+	    /*
+	     * The COMMA operator cannot be optimized, since the function
+	     * needs all of its arguments, and optimization would reduce
+	     * the number.  Other binary operators root constant expressions
+	     * when both arguments are constant expressions.
+	     */
+
+	    nodePtr->constant = (lexeme != COMMA);
+
+	    if (IsOperator(complete)) {
+		nodes[complete].p.parent = nodesUsed;
+		nodePtr->constant = nodePtr->constant
+			&& nodes[complete].constant;
+	    } else {
+		nodePtr->constant = nodePtr->constant
+			&& (complete == OT_LITERAL);
+	    }
+
+	    /*
+	     * With a left operand attached and a right operand missing,
+	     * the just-parsed binary operator is root of a new incomplete
+	     * tree.  Push it onto the stack of incomplete trees.
+	     */
+
+	    nodePtr->p.prev = incomplete;
+	    incomplete = lastParsed = nodesUsed;
+	    nodesUsed++;
+	    break;
+	}	/* case BINARY */
+	}	/* lexeme handler */
+
+	/* Advance past the just-parsed lexeme */
+	start += scanned;
+	numBytes -= scanned;
+    }	/* main parsing loop */
+
+  error:
 
     /*
-     * Parse the expression then compile it.
+     * We only get here if there's been an error.
+     * Any errors that didn't get a suitable parsePtr->errorType,
+     * get recorded as syntax errors.
      */
 
-    code = Tcl_ParseExpr(interp, script, numBytes, &parse);
-    if (code != TCL_OK) {
-	goto done;
+    if (parsePtr->errorType == TCL_PARSE_SUCCESS) {
+	parsePtr->errorType = TCL_PARSE_SYNTAX;
     }
 
-#ifdef TCL_TIP280
-    /* TIP #280 : Track Lines within the expression */
-    TclAdvanceLines (&envPtr->line, script, parse.tokenPtr->start);
-#endif
-
-    code = CompileSubExpr(parse.tokenPtr, &info, envPtr);
-    if (code != TCL_OK) {
-	Tcl_FreeParse(&parse);
-	goto done;
+    /* Free any partial parse tree we've built. */
+    if (nodes != NULL) {
+	ckfree((char*) nodes);
     }
-    
-    if (!info.hasOperators) {
+
+    if (interp == NULL) {
+
+	/* Nowhere to report an error message, so just free it */
+	if (msg) {
+	    Tcl_DecrRefCount(msg);
+	}
+    } else {
+
 	/*
-	 * Attempt to convert the primary's object to an int or double.
-	 * This is done in order to support Tcl's policy of interpreting
-	 * operands if at all possible as first integers, else
-	 * floating-point numbers.
+	 * Construct the complete error message.  Start with the simple
+	 * error message, pulled from the interp result if necessary...
 	 */
-	
-	TclEmitOpcode(INST_TRY_CVT_TO_NUMERIC, envPtr);
+
+	if (msg == NULL) {
+	    msg = Tcl_GetObjResult(interp);
+	}
+
+	/*
+	 * Add a detailed quote from the bad expression, displaying and
+	 * sometimes marking the precise location of the syntax error.
+	 */
+
+	Tcl_AppendPrintfToObj(msg, "\nin expression \"%s%.*s%.*s%s%s%.*s%s\"",
+		((start - limit) < parsePtr->string) ? "" : "...",
+		((start - limit) < parsePtr->string)
+			? (int) (start - parsePtr->string) : limit - 3,
+		((start - limit) < parsePtr->string)
+			? parsePtr->string : start - limit + 3,
+		(scanned < limit) ? scanned : limit - 3, start,
+		(scanned < limit) ? "" : "...", insertMark ? mark : "",
+		(start + scanned + limit > parsePtr->end)
+			? (int) (parsePtr->end - start) - scanned : limit-3,
+		start + scanned,
+		(start + scanned + limit > parsePtr->end) ? "" : "...");
+
+	/* Next, append any postscript message. */
+	if (post != NULL) {
+	    Tcl_AppendToObj(msg, ";\n", -1);
+	    Tcl_AppendObjToObj(msg, post);
+	    Tcl_DecrRefCount(post);
+	}
+	Tcl_SetObjResult(interp, msg);
+
+	/* Finally, place context information in the errorInfo. */
+	numBytes = parsePtr->end - parsePtr->string;
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (parsing expression \"%.*s%s\")",
+		(numBytes < limit) ? numBytes : limit - 3,
+		parsePtr->string, (numBytes < limit) ? "" : "..."));
     }
-    Tcl_FreeParse(&parse);
 
-    done:
-    return code;
+    return TCL_ERROR;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclFinalizeCompilation --
+ * ConvertTreeToTokens --
  *
- *	Clean up the compilation environment so it can later be
- *	properly reinitialized. This procedure is called by Tcl_Finalize().
+ *	Given a string, the numBytes bytes starting at start, and an OpNode
+ *	tree and Tcl_Token array created by passing that same string to
+ *	ParseExpr(), this function writes into *parsePtr the sequence of
+ * 	Tcl_Tokens needed so to satisfy the historical interface provided
+ * 	by Tcl_ParseExpr().  Note that this routine exists only for the sake
+ *	of the public Tcl_ParseExpr() routine.  It is not used by Tcl itself
+ * 	at all.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Cleans up the compilation environment. At the moment, just the
- *	table of expression operators is freed.
+ *	The Tcl_Parse *parsePtr is filled with Tcl_Tokens representing the
+ *	parsed expression.
  *
  *----------------------------------------------------------------------
  */
 
-void
-TclFinalizeCompilation()
+static void
+ConvertTreeToTokens(
+    const char *start,
+    int numBytes,
+    OpNode *nodes,
+    Tcl_Token *tokenPtr,
+    Tcl_Parse *parsePtr)
 {
-    Tcl_MutexLock(&opMutex);
-    if (opTableInitialized) {
-        Tcl_DeleteHashTable(&opHashTable);
-        opTableInitialized = 0;
+    int subExprTokenIdx = 0;
+    OpNode *nodePtr = nodes;
+    int next = nodePtr->right;
+
+    while (1) {
+	Tcl_Token *subExprTokenPtr;
+	int scanned, parentIdx;
+	unsigned char lexeme;
+
+	/*
+	 * Advance the mark so the next exit from this node won't retrace
+	 * steps over ground already covered.
+	 */
+
+	nodePtr->mark++;
+
+	/* Handle next child node or leaf */
+	switch (next) {
+	case OT_EMPTY:
+
+	    /* No tokens and no characters for the OT_EMPTY leaf. */
+	    break;
+
+	case OT_LITERAL:
+
+	    /* Skip any white space that comes before the literal */
+	    scanned = TclParseAllWhiteSpace(start, numBytes);
+	    start +=scanned;
+	    numBytes -= scanned;
+
+	    /* Reparse the literal to get pointers into source string */
+	    scanned = ParseLexeme(start, numBytes, &lexeme, NULL);
+
+	    TclGrowParseTokenArray(parsePtr, 2);
+	    subExprTokenPtr = parsePtr->tokenPtr + parsePtr->numTokens;
+	    subExprTokenPtr->type = TCL_TOKEN_SUB_EXPR;
+	    subExprTokenPtr->start = start;
+	    subExprTokenPtr->size = scanned;
+	    subExprTokenPtr->numComponents = 1;
+	    subExprTokenPtr[1].type = TCL_TOKEN_TEXT;
+	    subExprTokenPtr[1].start = start;
+	    subExprTokenPtr[1].size = scanned;
+	    subExprTokenPtr[1].numComponents = 0;
+
+	    parsePtr->numTokens += 2;
+	    start +=scanned;
+	    numBytes -= scanned;
+	    break;
+
+	case OT_TOKENS: {
+
+	    /*
+	     * tokenPtr points to a token sequence that came from parsing
+	     * a Tcl word.  A Tcl word is made up of a sequence of one or
+	     * more elements.  When the word is only a single element, it's
+	     * been the historical practice to replace the TCL_TOKEN_WORD
+	     * token directly with a TCL_TOKEN_SUB_EXPR token.  However,
+	     * when the word has multiple elements, a TCL_TOKEN_WORD token
+	     * is kept as a grouping device so that TCL_TOKEN_SUB_EXPR
+	     * always has only one element.  Wise or not, these are the
+	     * rules the Tcl expr parser has followed, and for the sake
+	     * of those few callers of Tcl_ParseExpr() we do not change
+	     * them now.  Internally, we can do better.
+	     */
+
+	    int toCopy = tokenPtr->numComponents + 1;
+
+	    if (tokenPtr->numComponents == tokenPtr[1].numComponents + 1) {
+
+		/*
+		 * Single element word.  Copy tokens and convert the leading
+		 * token to TCL_TOKEN_SUB_EXPR.
+		 */
+
+		TclGrowParseTokenArray(parsePtr, toCopy);
+		subExprTokenPtr = parsePtr->tokenPtr + parsePtr->numTokens;
+		memcpy(subExprTokenPtr, tokenPtr,
+			(size_t) toCopy * sizeof(Tcl_Token));
+		subExprTokenPtr->type = TCL_TOKEN_SUB_EXPR;
+		parsePtr->numTokens += toCopy;
+	    } else {
+
+		/*
+		 * Multiple element word.  Create a TCL_TOKEN_SUB_EXPR
+		 * token to lead, with fields initialized from the leading
+		 * token, then copy entire set of word tokens.
+		 */
+
+		TclGrowParseTokenArray(parsePtr, toCopy+1);
+		subExprTokenPtr = parsePtr->tokenPtr + parsePtr->numTokens;
+		*subExprTokenPtr = *tokenPtr;
+		subExprTokenPtr->type = TCL_TOKEN_SUB_EXPR;
+		subExprTokenPtr->numComponents++;
+		subExprTokenPtr++;
+		memcpy(subExprTokenPtr, tokenPtr,
+			(size_t) toCopy * sizeof(Tcl_Token));
+		parsePtr->numTokens += toCopy + 1;
+	    }
+
+	    scanned = tokenPtr->start + tokenPtr->size - start;
+	    start +=scanned;
+	    numBytes -= scanned;
+	    tokenPtr += toCopy;
+	    break;
+	}
+
+	default:
+
+	    /* Advance to the child node, which is an operator. */
+	    nodePtr = nodes + next;
+
+	    /* Skip any white space that comes before the subexpression */
+	    scanned = TclParseAllWhiteSpace(start, numBytes);
+	    start +=scanned;
+	    numBytes -= scanned;
+
+	    /* Generate tokens for the operator / subexpression... */
+	    switch (nodePtr->lexeme) {
+	    case OPEN_PAREN:
+	    case COMMA:
+	    case COLON:
+
+		/*
+		 * Historical practice has been to have no Tcl_Tokens for
+		 * these operators.
+		 */
+
+		break;
+
+	    default: {
+
+		/*
+		 * Remember the index of the last subexpression we were
+		 * working on -- that of our parent.  We'll stack it later.
+		 */
+
+		parentIdx = subExprTokenIdx;
+
+		/*
+		 * Verify space for the two leading Tcl_Tokens representing
+		 * the subexpression rooted by this operator.  The first
+		 * Tcl_Token will be of type TCL_TOKEN_SUB_EXPR; the second
+		 * of type TCL_TOKEN_OPERATOR.
+		 */
+
+		TclGrowParseTokenArray(parsePtr, 2);
+		subExprTokenIdx = parsePtr->numTokens;
+		subExprTokenPtr = parsePtr->tokenPtr + subExprTokenIdx;
+		parsePtr->numTokens += 2;
+		subExprTokenPtr->type = TCL_TOKEN_SUB_EXPR;
+		subExprTokenPtr[1].type = TCL_TOKEN_OPERATOR;
+
+		/*
+		 * Our current position scanning the string is the starting
+		 * point for this subexpression.
+		 */
+
+		subExprTokenPtr->start = start;
+
+		/*
+		 * Eventually, we know that the numComponents field of the
+		 * Tcl_Token of type TCL_TOKEN_OPERATOR will be 0.  This means
+		 * we can make other use of this field for now to track the
+		 * stack of subexpressions we have pending.
+		 */
+
+		subExprTokenPtr[1].numComponents = parentIdx;
+		break;
+	    }
+	    }
+	    break;
+	}
+
+	/* Determine which way to exit the node on this pass. */
+    router:
+	switch (nodePtr->mark) {
+	case MARK_LEFT:
+	    next = nodePtr->left;
+	    break;
+
+	case MARK_RIGHT:
+	    next = nodePtr->right;
+
+	    /* Skip any white space that comes before the operator */
+	    scanned = TclParseAllWhiteSpace(start, numBytes);
+	    start +=scanned;
+	    numBytes -= scanned;
+
+	    /*
+	     * Here we scan from the string the operator corresponding to
+	     * nodePtr->lexeme.
+	     */
+
+	    scanned = ParseLexeme(start, numBytes, &lexeme, NULL);
+
+	    switch(nodePtr->lexeme) {
+	    case OPEN_PAREN:
+	    case COMMA:
+	    case COLON:
+
+		/* No tokens for these lexemes -> nothing to do. */
+		break;
+
+	    default:
+
+		/*
+		 * Record in the TCL_TOKEN_OPERATOR token the pointers into
+		 * the string marking where the operator is.
+		 */
+
+		subExprTokenPtr = parsePtr->tokenPtr + subExprTokenIdx;
+		subExprTokenPtr[1].start = start;
+		subExprTokenPtr[1].size = scanned;
+		break;
+	    }
+
+	    start +=scanned;
+	    numBytes -= scanned;
+	    break;
+
+	case MARK_PARENT:
+	    switch (nodePtr->lexeme) {
+	    case START:
+
+		/* When we get back to the START node, we're done. */
+		return;
+
+	    case COMMA:
+	    case COLON:
+
+		/* No tokens for these lexemes -> nothing to do. */
+		break;
+
+	    case OPEN_PAREN:
+
+		/* Skip past matching close paren. */
+		scanned = TclParseAllWhiteSpace(start, numBytes);
+		start +=scanned;
+		numBytes -= scanned;
+		scanned = ParseLexeme(start, numBytes, &lexeme, NULL);
+		start +=scanned;
+		numBytes -= scanned;
+		break;
+
+	    default: {
+
+		/*
+		 * Before we leave this node/operator/subexpression for the
+		 * last time, finish up its tokens....
+		 *
+		 * Our current position scanning the string is where the
+		 * substring for the subexpression ends.
+		 */
+
+		subExprTokenPtr = parsePtr->tokenPtr + subExprTokenIdx;
+		subExprTokenPtr->size = start - subExprTokenPtr->start;
+
+		/*
+		 * All the Tcl_Tokens allocated and filled belong to
+		 * this subexpresion.  The first token is the leading
+		 * TCL_TOKEN_SUB_EXPR token, and all the rest (one fewer)
+		 * are its components.
+		 */
+
+		subExprTokenPtr->numComponents =
+			(parsePtr->numTokens - subExprTokenIdx) - 1;
+
+		/*
+		 * Finally, as we return up the tree to our parent, pop the
+		 * parent subexpression off our subexpression stack, and
+		 * fill in the zero numComponents for the operator Tcl_Token.
+		 */
+
+		parentIdx = subExprTokenPtr[1].numComponents;
+		subExprTokenPtr[1].numComponents = 0;
+		subExprTokenIdx = parentIdx;
+		break;
+	    }
+	    }
+
+	    /* Since we're returning to parent, skip child handling code. */
+	    nodePtr = nodes + nodePtr->p.parent;
+	    goto router;
+	}
     }
-    Tcl_MutexUnlock(&opMutex);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CompileSubExpr --
+ * Tcl_ParseExpr --
  *
- *	Given a pointer to a TCL_TOKEN_SUB_EXPR token describing a
- *	subexpression, this procedure emits instructions to evaluate the
- *	subexpression at runtime.
+ *	Given a string, the numBytes bytes starting at start, this function
+ *	parses it as a Tcl expression and stores information about the
+ *	structure of the expression in the Tcl_Parse struct indicated by the
+ *	caller.
  *
  * Results:
- *	The return value is TCL_OK on a successful compilation and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
+ *	If the string is successfully parsed as a valid Tcl expression, TCL_OK
+ *	is returned, and data about the expression structure is written to
+ *	*parsePtr. If the string cannot be parsed as a valid Tcl expression,
+ *	TCL_ERROR is returned, and if interp is non-NULL, an error message is
+ *	written to interp.
  *
  * Side effects:
- *	Adds instructions to envPtr to evaluate the subexpression.
+ *	If there is insufficient space in parsePtr to hold all the information
+ *	about the expression, then additional space is malloc-ed. If the
+ *	function returns TCL_OK then the caller must eventually invoke
+ *	Tcl_FreeParse to release any additional space that was allocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_ParseExpr(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    const char *start,		/* Start of source string to parse. */
+    int numBytes,		/* Number of bytes in string. If < 0, the
+				 * string consists of all bytes up to the
+				 * first null character. */
+    Tcl_Parse *parsePtr)	/* Structure to fill with information about
+				 * the parsed expression; any previous
+				 * information in the structure is ignored. */
+{
+    int code;
+    OpNode *opTree = NULL;	/* Will point to the tree of operators */
+    Tcl_Obj *litList = Tcl_NewObj();	/* List to hold the literals */
+    Tcl_Obj *funcList = Tcl_NewObj();	/* List to hold the functon names*/
+    Tcl_Parse *exprParsePtr =
+	    (Tcl_Parse *) TclStackAlloc(interp, sizeof(Tcl_Parse));
+				/* Holds the Tcl_Tokens of substitutions */
+
+    if (numBytes < 0) {
+	numBytes = (start ? strlen(start) : 0);
+    }
+
+    code = ParseExpr(interp, start, numBytes, &opTree, litList,
+	    funcList, exprParsePtr, 1 /* parseOnly */);
+    Tcl_DecrRefCount(funcList);
+    Tcl_DecrRefCount(litList);
+
+    TclParseInit(interp, start, numBytes, parsePtr);
+    if (code == TCL_OK) {
+	ConvertTreeToTokens(start, numBytes,
+		opTree, exprParsePtr->tokenPtr, parsePtr);
+    } else {
+	parsePtr->term = exprParsePtr->term;
+	parsePtr->errorType = exprParsePtr->errorType;
+    }
+
+    Tcl_FreeParse(exprParsePtr);
+    TclStackFree(interp, exprParsePtr);
+    ckfree((char *) opTree);
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ParseLexeme --
+ *
+ *	Parse a single lexeme from the start of a string, scanning no more
+ *	than numBytes bytes.
+ *
+ * Results:
+ *	Returns the number of bytes scanned to produce the lexeme.
+ *
+ * Side effects:
+ *	Code identifying lexeme parsed is writen to *lexemePtr.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-CompileSubExpr(exprTokenPtr, infoPtr, envPtr)
-    Tcl_Token *exprTokenPtr;	/* Points to TCL_TOKEN_SUB_EXPR token
-				 * to compile. */
-    ExprInfo *infoPtr;		/* Describes the compilation state for the
-				 * expression being compiled. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+ParseLexeme(
+    const char *start,		/* Start of lexeme to parse. */
+    int numBytes,		/* Number of bytes in string. */
+    unsigned char *lexemePtr,	/* Write code of parsed lexeme to this
+				 * storage. */
+    Tcl_Obj **literalPtr)	/* Write corresponding literal value to this
+				   storage, if non-NULL. */
 {
-    Tcl_Interp *interp = infoPtr->interp;
-    Tcl_Token *tokenPtr, *endPtr = NULL; /* silence gcc 4 warning */
-    Tcl_Token *afterSubexprPtr;
-    CONST OperatorDesc *opDescPtr;
-    Tcl_HashEntry *hPtr;
-    CONST char *operator;
-    Tcl_DString opBuf;
-    int objIndex, opIndex, length, code;
-    char buffer[TCL_UTF_MAX];
-
-    if (exprTokenPtr->type != TCL_TOKEN_SUB_EXPR) {
-	panic("CompileSubExpr: token type %d not TCL_TOKEN_SUB_EXPR\n",
-	        exprTokenPtr->type);
+    const char *end;
+    int scanned;
+    Tcl_UniChar ch;
+    Tcl_Obj *literal = NULL;
+    unsigned char byte;
+
+    if (numBytes == 0) {
+	*lexemePtr = END;
+	return 0;
     }
-    code = TCL_OK;
+    byte = (unsigned char)(*start);
+    if (byte < sizeof(Lexeme) && Lexeme[byte] != 0) {
+	*lexemePtr = Lexeme[byte];
+	return 1;
+    }
+    switch (byte) {
+    case '*':
+	if ((numBytes > 1) && (start[1] == '*')) {
+	    *lexemePtr = EXPON;
+	    return 2;
+	}
+	*lexemePtr = MULT;
+	return 1;
 
-    /*
-     * Switch on the type of the first token after the subexpression token.
-     * After processing it, advance tokenPtr to point just after the
-     * subexpression's last token.
-     */
-    
-    tokenPtr = exprTokenPtr+1;
-    TRACE(exprTokenPtr->start, exprTokenPtr->size,
-	    tokenPtr->start, tokenPtr->size);
-    switch (tokenPtr->type) {
-        case TCL_TOKEN_WORD:
-	    code = TclCompileTokens(interp, tokenPtr+1,
-	            tokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
-	    tokenPtr += (tokenPtr->numComponents + 1);
-	    break;
-	    
-        case TCL_TOKEN_TEXT:
-	    if (tokenPtr->size > 0) {
-		objIndex = TclRegisterNewLiteral(envPtr, tokenPtr->start,
-	                tokenPtr->size);
-	    } else {
-		objIndex = TclRegisterNewLiteral(envPtr, "", 0);
-	    }
-	    TclEmitPush(objIndex, envPtr);
-	    tokenPtr += 1;
-	    break;
-	    
-        case TCL_TOKEN_BS:
-	    length = TclParseBackslash(tokenPtr->start, tokenPtr->size,
-		    (int *) NULL, buffer);
-	    if (length > 0) {
-		objIndex = TclRegisterNewLiteral(envPtr, buffer, length);
-	    } else {
-		objIndex = TclRegisterNewLiteral(envPtr, "", 0);
-	    }
-	    TclEmitPush(objIndex, envPtr);
-	    tokenPtr += 1;
-	    break;
-	    
-        case TCL_TOKEN_COMMAND:
-	    code = TclCompileScript(interp, tokenPtr->start+1,
-		    tokenPtr->size-2, /*nested*/ 0, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
-	    }
-	    tokenPtr += 1;
-	    break;
-	    
-        case TCL_TOKEN_VARIABLE:
-	    code = TclCompileTokens(interp, tokenPtr, 1, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
+    case '=':
+	if ((numBytes > 1) && (start[1] == '=')) {
+	    *lexemePtr = EQUAL;
+	    return 2;
+	}
+	*lexemePtr = INCOMPLETE;
+	return 1;
+
+    case '!':
+	if ((numBytes > 1) && (start[1] == '=')) {
+	    *lexemePtr = NEQ;
+	    return 2;
+	}
+	*lexemePtr = NOT;
+	return 1;
+
+    case '&':
+	if ((numBytes > 1) && (start[1] == '&')) {
+	    *lexemePtr = AND;
+	    return 2;
+	}
+	*lexemePtr = BIT_AND;
+	return 1;
+
+    case '|':
+	if ((numBytes > 1) && (start[1] == '|')) {
+	    *lexemePtr = OR;
+	    return 2;
+	}
+	*lexemePtr = BIT_OR;
+	return 1;
+
+    case '<':
+	if (numBytes > 1) {
+	    switch (start[1]) {
+	    case '<':
+		*lexemePtr = LEFT_SHIFT;
+		return 2;
+	    case '=':
+		*lexemePtr = LEQ;
+		return 2;
 	    }
-	    tokenPtr += (tokenPtr->numComponents + 1);
-	    break;
-	    
-        case TCL_TOKEN_SUB_EXPR:
-	    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
+	}
+	*lexemePtr = LESS;
+	return 1;
+
+    case '>':
+	if (numBytes > 1) {
+	    switch (start[1]) {
+	    case '>':
+		*lexemePtr = RIGHT_SHIFT;
+		return 2;
+	    case '=':
+		*lexemePtr = GEQ;
+		return 2;
 	    }
-	    tokenPtr += (tokenPtr->numComponents + 1);
-	    break;
-	    
-        case TCL_TOKEN_OPERATOR:
+	}
+	*lexemePtr = GREATER;
+	return 1;
+
+    case 'i':
+	if ((numBytes > 1) && (start[1] == 'n')
+		&& ((numBytes == 2) || !isalpha(UCHAR(start[2])))) {
+
 	    /*
-	     * Look up the operator.  If the operator isn't found, treat it
-	     * as a math function.
+	     * Must make this check so we can tell the difference between
+	     * the "in" operator and the "int" function name and the
+	     * "infinity" numeric value.
 	     */
-	    Tcl_DStringInit(&opBuf);
-	    operator = Tcl_DStringAppend(&opBuf, 
-		    tokenPtr->start, tokenPtr->size);
-	    hPtr = Tcl_FindHashEntry(&opHashTable, operator);
-	    if (hPtr == NULL) {
-		code = CompileMathFuncCall(exprTokenPtr, operator, infoPtr,
-			envPtr, &endPtr);
-		Tcl_DStringFree(&opBuf);
-		if (code != TCL_OK) {
-		    goto done;
-		}
-		tokenPtr = endPtr;
-		break;
+
+	    *lexemePtr = IN_LIST;
+	    return 2;
+	}
+	break;
+
+    case 'e':
+	if ((numBytes > 1) && (start[1] == 'q')
+		&& ((numBytes == 2) || !isalpha(UCHAR(start[2])))) {
+	    *lexemePtr = STREQ;
+	    return 2;
+	}
+	break;
+
+    case 'n':
+	if ((numBytes > 1) && ((numBytes == 2) || !isalpha(UCHAR(start[2])))) {
+	    switch (start[1]) {
+	    case 'e':
+		*lexemePtr = STRNEQ;
+		return 2;
+	    case 'i':
+		*lexemePtr = NOT_IN_LIST;
+		return 2;
+	    }
+	}
+    }
+
+    literal = Tcl_NewObj();
+    if (TclParseNumber(NULL, literal, NULL, start, numBytes, &end,
+	    TCL_PARSE_NO_WHITESPACE) == TCL_OK) {
+	if (end < start + numBytes && !isalnum(UCHAR(*end))
+		&& UCHAR(*end) != '_') {
+	
+	number:
+	    TclInitStringRep(literal, start, end-start);
+	    *lexemePtr = NUMBER;
+	    if (literalPtr) {
+		*literalPtr = literal;
+	    } else {
+		Tcl_DecrRefCount(literal);
 	    }
-	    Tcl_DStringFree(&opBuf);
-	    opIndex = (int) Tcl_GetHashValue(hPtr);
-	    opDescPtr = &(operatorTable[opIndex]);
+	    return (end-start);
+	} else {
+	    unsigned char lexeme;
 
 	    /*
-	     * If the operator is "normal", compile it using information
-	     * from the operator table.
+	     * We have a number followed directly by bareword characters
+	     * (alpha, digit, underscore).  Is this a number followed by
+	     * bareword syntax error?  Or should we join into one bareword?
+	     * Example: Inf + luence + () becomes a valid function call.
+	     * [Bug 3401704]
 	     */
-
-	    if (opDescPtr->numOperands > 0) {
-		tokenPtr++;
-		code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-		if (code != TCL_OK) {
-		    goto done;
-		}
-		tokenPtr += (tokenPtr->numComponents + 1);
-
-		if (opDescPtr->numOperands == 2) {
-		    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-		    if (code != TCL_OK) {
-			goto done;
+	    if (literal->typePtr == &tclDoubleType) {
+		const char *p = start;
+		while (p < end) {
+		    if (!isalnum(UCHAR(*p++))) {
+			/*
+			 * The number has non-bareword characters, so we 
+			 * must treat it as a number.
+			 */
+			goto number;
 		    }
-		    tokenPtr += (tokenPtr->numComponents + 1);
 		}
-		TclEmitOpcode(opDescPtr->instruction, envPtr);
-		infoPtr->hasOperators = 1;
-		break;
 	    }
-	    
+	    ParseLexeme(end, numBytes-(end-start), &lexeme, NULL);
+	    if ((NODE_TYPE & lexeme) == BINARY) {
+		/*
+		 * The bareword characters following the number take the
+		 * form of an operator (eq, ne, in, ni, ...) so we treat
+		 * as number + operator.
+		 */
+		goto number;
+	    }
 	    /*
-	     * The operator requires special treatment, and is either
-	     * "+" or "-", or one of "&&", "||" or "?".
+	     * Otherwise, fall through and parse the whole as a bareword.
 	     */
-	    
-	    switch (opIndex) {
-	        case OP_PLUS:
-	        case OP_MINUS:
-		    tokenPtr++;
-		    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-		    if (code != TCL_OK) {
-			goto done;
-		    }
-		    tokenPtr += (tokenPtr->numComponents + 1);
-		    
-		    /*
-		     * Check whether the "+" or "-" is unary.
-		     */
-		    
-		    afterSubexprPtr = exprTokenPtr
-			    + exprTokenPtr->numComponents+1;
-		    if (tokenPtr == afterSubexprPtr) {
-			TclEmitOpcode(((opIndex==OP_PLUS)?
-			        INST_UPLUS : INST_UMINUS),
-			        envPtr);
-			break;
-		    }
-		    
-		    /*
-		     * The "+" or "-" is binary.
-		     */
-		    
-		    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-		    if (code != TCL_OK) {
-			goto done;
-		    }
-		    tokenPtr += (tokenPtr->numComponents + 1);
-		    TclEmitOpcode(((opIndex==OP_PLUS)? INST_ADD : INST_SUB),
-			    envPtr);
-		    break;
-
-	        case OP_LAND:
-	        case OP_LOR:
-		    code = CompileLandOrLorExpr(exprTokenPtr, opIndex,
-			    infoPtr, envPtr, &endPtr);
-		    if (code != TCL_OK) {
-			goto done;
-		    }
-		    tokenPtr = endPtr;
-		    break;
-			
-	        case OP_QUESTY:
-		    code = CompileCondExpr(exprTokenPtr, infoPtr,
-			    envPtr, &endPtr);
-		    if (code != TCL_OK) {
-			goto done;
-		    }
-		    tokenPtr = endPtr;
-		    break;
-		    
-		default:
-		    panic("CompileSubExpr: unexpected operator %d requiring special treatment\n",
-		        opIndex);
-	    } /* end switch on operator requiring special treatment */
-	    infoPtr->hasOperators = 1;
-	    break;
-
-        default:
-	    panic("CompileSubExpr: unexpected token type %d\n",
-	            tokenPtr->type);
+	}
     }
 
-    /*
-     * Verify that the subexpression token had the required number of
-     * subtokens: that we've advanced tokenPtr just beyond the
-     * subexpression's last token. For example, a "*" subexpression must
-     * contain the tokens for exactly two operands.
-     */
-    
-    if (tokenPtr != (exprTokenPtr + exprTokenPtr->numComponents+1)) {
-	LogSyntaxError(infoPtr);
-	code = TCL_ERROR;
+    if (Tcl_UtfCharComplete(start, numBytes)) {
+	scanned = Tcl_UtfToUniChar(start, &ch);
+    } else {
+	char utfBytes[TCL_UTF_MAX];
+	memcpy(utfBytes, start, (size_t) numBytes);
+	utfBytes[numBytes] = '\0';
+	scanned = Tcl_UtfToUniChar(utfBytes, &ch);
     }
-    
-    done:
-    return code;
+    if (!isalnum(UCHAR(ch))) {
+	*lexemePtr = INVALID;
+	Tcl_DecrRefCount(literal);
+	return scanned;
+    }
+    end = start;
+    while (isalnum(UCHAR(ch)) || (UCHAR(ch) == '_')) {
+	end += scanned;
+	numBytes -= scanned;
+	if (Tcl_UtfCharComplete(end, numBytes)) {
+	    scanned = Tcl_UtfToUniChar(end, &ch);
+	} else {
+	    char utfBytes[TCL_UTF_MAX];
+	    memcpy(utfBytes, end, (size_t) numBytes);
+	    utfBytes[numBytes] = '\0';
+	    scanned = Tcl_UtfToUniChar(utfBytes, &ch);
+	}
+    }
+    *lexemePtr = BAREWORD;
+    if (literalPtr) {
+	Tcl_SetStringObj(literal, start, (int) (end-start));
+	*literalPtr = literal;
+    } else {
+	Tcl_DecrRefCount(literal);
+    }
+    return (end-start);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CompileLandOrLorExpr --
+ * TclCompileExpr --
  *
- *	This procedure compiles a Tcl logical and ("&&") or logical or
- *	("||") subexpression.
+ *	This procedure compiles a string containing a Tcl expression into Tcl
+ *	bytecodes.
  *
  * Results:
- *	The return value is TCL_OK on a successful compilation and TCL_ERROR
- *	on failure. If TCL_OK is returned, a pointer to the token just after
- *	the last one in the subexpression is stored at the address in
- *	endPtrPtr. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
+ *	None.
  *
  * Side effects:
  *	Adds instructions to envPtr to evaluate the expression at runtime.
@@ -580,387 +2022,680 @@ CompileSubExpr(exprTokenPtr, infoPtr, envPtr)
  *----------------------------------------------------------------------
  */
 
-static int
-CompileLandOrLorExpr(exprTokenPtr, opIndex, infoPtr, envPtr, endPtrPtr)
-    Tcl_Token *exprTokenPtr;	 /* Points to TCL_TOKEN_SUB_EXPR token
-				  * containing the "&&" or "||" operator. */
-    int opIndex;		 /* A code describing the expression
-				  * operator: either OP_LAND or OP_LOR. */
-    ExprInfo *infoPtr;		 /* Describes the compilation state for the
-				  * expression being compiled. */
-    CompileEnv *envPtr;		 /* Holds resulting instructions. */
-    Tcl_Token **endPtrPtr;	 /* If successful, a pointer to the token
-				  * just after the last token in the
-				  * subexpression is stored here. */
+void
+TclCompileExpr(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    const char *script,		/* The source script to compile. */
+    int numBytes,		/* Number of bytes in script. */
+    CompileEnv *envPtr,		/* Holds resulting instructions. */
+    int optimize)               /* 0 for one-off expressions */
 {
-    JumpFixup shortCircuitFixup; /* Used to fix up the short circuit jump
-				  * after the first subexpression. */
-    JumpFixup lhsTrueFixup, lhsEndFixup;
-    				 /* Used to fix up jumps used to convert the
-				  * first operand to 0 or 1. */
-    Tcl_Token *tokenPtr;
-    int dist, code;
-    int savedStackDepth = envPtr->currStackDepth;
+    OpNode *opTree = NULL;	/* Will point to the tree of operators */
+    Tcl_Obj *litList = Tcl_NewObj();	/* List to hold the literals */
+    Tcl_Obj *funcList = Tcl_NewObj();	/* List to hold the functon names*/
+    Tcl_Parse *parsePtr =
+	    (Tcl_Parse *) TclStackAlloc(interp, sizeof(Tcl_Parse));
+				/* Holds the Tcl_Tokens of substitutions */
+
+    int code = ParseExpr(interp, script, numBytes, &opTree, litList,
+	    funcList, parsePtr, 0 /* parseOnly */);
+
+    if (code == TCL_OK) {
+
+	/* Valid parse; compile the tree. */
+	int objc;
+	Tcl_Obj *const *litObjv;
+	Tcl_Obj **funcObjv;
+
+	/* TIP #280 : Track Lines within the expression */
+	TclAdvanceLines(&envPtr->line, script,
+		script + TclParseAllWhiteSpace(script, numBytes));
+
+	TclListObjGetElements(NULL, litList, &objc, (Tcl_Obj ***)&litObjv);
+	TclListObjGetElements(NULL, funcList, &objc, &funcObjv);
+	CompileExprTree(interp, opTree, 0, &litObjv, funcObjv,
+		parsePtr->tokenPtr, envPtr, optimize);
+    } else {
+	TclCompileSyntaxError(interp, envPtr);
+    }
 
-    /*
-     * Emit code for the first operand.
-     */
+    Tcl_FreeParse(parsePtr);
+    TclStackFree(interp, parsePtr);
+    Tcl_DecrRefCount(funcList);
+    Tcl_DecrRefCount(litList);
+    ckfree((char *) opTree);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ExecConstantExprTree --
+ *	Compiles and executes bytecode for the subexpression tree at index
+ *	in the nodes array.  This subexpression must be constant, made up
+ *	of only constant operators (not functions) and literals.
+ *
+ * Results:
+ *	A standard Tcl return code and result left in interp.
+ *
+ * Side effects:
+ *	Consumes subtree of nodes rooted at index.  Advances the pointer
+ *	*litObjvPtr.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    tokenPtr = exprTokenPtr+2;
-    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-    if (code != TCL_OK) {
-	goto done;
-    }
-    tokenPtr += (tokenPtr->numComponents + 1);
+static int
+ExecConstantExprTree(
+    Tcl_Interp *interp,
+    OpNode *nodes,
+    int index,
+    Tcl_Obj *const **litObjvPtr)
+{
+    CompileEnv *envPtr;
+    ByteCode *byteCodePtr;
+    int code;
+    Tcl_Obj *byteCodeObj = Tcl_NewObj();
 
     /*
-     * Convert the first operand to the result that Tcl requires:
-     * "0" or "1". Eventually we'll use a new instruction for this.
+     * Note we are compiling an expression with literal arguments. This means
+     * there can be no [info frame] calls when we execute the resulting
+     * bytecode, so there's no need to tend to TIP 280 issues.
      */
-    
-    TclEmitForwardJump(envPtr, TCL_TRUE_JUMP, &lhsTrueFixup);
-    TclEmitPush(TclRegisterNewLiteral(envPtr, "0", 1), envPtr);
-    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP, &lhsEndFixup);
-    dist = (envPtr->codeNext - envPtr->codeStart) - lhsTrueFixup.codeOffset;
-    if (TclFixupForwardJump(envPtr, &lhsTrueFixup, dist, 127)) {
-        badDist:
-	panic("CompileLandOrLorExpr: bad jump distance %d\n", dist);
-    }
-    envPtr->currStackDepth = savedStackDepth;
-    TclEmitPush(TclRegisterNewLiteral(envPtr, "1", 1), envPtr);
-    dist = (envPtr->codeNext - envPtr->codeStart) - lhsEndFixup.codeOffset;
-    if (TclFixupForwardJump(envPtr, &lhsEndFixup, dist, 127)) {
-	goto badDist;
-    }
 
-    /*
-     * Emit the "short circuit" jump around the rest of the expression.
-     * Duplicate the "0" or "1" on top of the stack first to keep the
-     * jump from consuming it.
-     */
+    envPtr = (CompileEnv *) TclStackAlloc(interp, sizeof(CompileEnv));
+    TclInitCompileEnv(interp, envPtr, NULL, 0, NULL, 0);
+    CompileExprTree(interp, nodes, index, litObjvPtr, NULL, NULL, envPtr,
+	    0 /* optimize */);
+    TclEmitOpcode(INST_DONE, envPtr);
+    Tcl_IncrRefCount(byteCodeObj);
+    TclInitByteCodeObj(byteCodeObj, envPtr);
+    TclFreeCompileEnv(envPtr);
+    TclStackFree(interp, envPtr);
+    byteCodePtr = (ByteCode *) byteCodeObj->internalRep.twoPtrValue.ptr1;
+    code = TclExecuteByteCode(interp, byteCodePtr);
+    Tcl_DecrRefCount(byteCodeObj);
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CompileExprTree --
+ *	Compiles and writes to envPtr instructions for the subexpression
+ *	tree at index in the nodes array.  (*litObjvPtr) must point to the
+ *	proper location in a corresponding literals list.  Likewise, when
+ *	non-NULL, funcObjv and tokenPtr must point into matching arrays of
+ * 	function names and Tcl_Token's derived from earlier call to
+ *	ParseExpr().  When optimize is true, any constant subexpressions
+ *	will be precomputed.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Adds instructions to envPtr to evaluate the expression at runtime.
+ *	Consumes subtree of nodes rooted at index.  Advances the pointer
+ *	*litObjvPtr.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    TclEmitOpcode(INST_DUP, envPtr);
-    TclEmitForwardJump(envPtr,
-	    ((opIndex==OP_LAND)? TCL_FALSE_JUMP : TCL_TRUE_JUMP),
-	    &shortCircuitFixup);
+static void
+CompileExprTree(
+    Tcl_Interp *interp,
+    OpNode *nodes,
+    int index,
+    Tcl_Obj *const **litObjvPtr,
+    Tcl_Obj *const *funcObjv,
+    Tcl_Token *tokenPtr,
+    CompileEnv *envPtr,
+    int optimize)
+{
+    OpNode *nodePtr = nodes + index;
+    OpNode *rootPtr = nodePtr;
+    int numWords = 0;
+    JumpList *jumpPtr = NULL;
+    int convert = 1;
+
+    while (1) {
+	int next;
+	JumpList *freePtr, *newJump;
+
+	if (nodePtr->mark == MARK_LEFT) {
+	    next = nodePtr->left;
+
+	    switch (nodePtr->lexeme) {
+	    case QUESTION:
+		newJump = (JumpList *) TclStackAlloc(interp, sizeof(JumpList));
+		newJump->next = jumpPtr;
+		jumpPtr = newJump;
+		newJump = (JumpList *) TclStackAlloc(interp, sizeof(JumpList));
+		newJump->next = jumpPtr;
+		jumpPtr = newJump;
+		jumpPtr->depth = envPtr->currStackDepth;
+		convert = 1;
+		break;
+	    case AND:
+	    case OR:
+		newJump = (JumpList *) TclStackAlloc(interp, sizeof(JumpList));
+		newJump->next = jumpPtr;
+		jumpPtr = newJump;
+		newJump = (JumpList *) TclStackAlloc(interp, sizeof(JumpList));
+		newJump->next = jumpPtr;
+		jumpPtr = newJump;
+		newJump = (JumpList *) TclStackAlloc(interp, sizeof(JumpList));
+		newJump->next = jumpPtr;
+		jumpPtr = newJump;
+		jumpPtr->depth = envPtr->currStackDepth;
+		break;
+	    }
+	} else if (nodePtr->mark == MARK_RIGHT) {
+	    next = nodePtr->right;
+
+	    switch (nodePtr->lexeme) {
+	    case FUNCTION: {
+		Tcl_DString cmdName;
+		const char *p;
+		int length;
+
+		Tcl_DStringInit(&cmdName);
+		Tcl_DStringAppend(&cmdName, "tcl::mathfunc::", -1);
+		p = TclGetStringFromObj(*funcObjv, &length);
+		funcObjv++;
+		Tcl_DStringAppend(&cmdName, p, length);
+		TclEmitPush(TclRegisterNewNSLiteral(envPtr,
+			Tcl_DStringValue(&cmdName),
+			Tcl_DStringLength(&cmdName)), envPtr);
+		Tcl_DStringFree(&cmdName);
+
+		/*
+		 * Start a count of the number of words in this function
+		 * command invocation.  In case there's already a count
+		 * in progress (nested functions), save it in our unused
+		 * "left" field for restoring later.
+		 */
+
+		nodePtr->left = numWords;
+		numWords = 2;	/* Command plus one argument */
+		break;
+	    }
+	    case QUESTION:
+		TclEmitForwardJump(envPtr, TCL_FALSE_JUMP, &(jumpPtr->jump));
+		break;
+	    case COLON:
+		TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP,
+			&(jumpPtr->next->jump));
+		envPtr->currStackDepth = jumpPtr->depth;
+		jumpPtr->offset = (envPtr->codeNext - envPtr->codeStart);
+		jumpPtr->convert = convert;
+		convert = 1;
+		break;
+	    case AND:
+		TclEmitForwardJump(envPtr, TCL_FALSE_JUMP, &(jumpPtr->jump));
+		break;
+	    case OR:
+		TclEmitForwardJump(envPtr, TCL_TRUE_JUMP, &(jumpPtr->jump));
+		break;
+	    }
+	} else {
+	    switch (nodePtr->lexeme) {
+	    case START:
+	    case QUESTION:
+		if (convert && (nodePtr == rootPtr)) {
+		    TclEmitOpcode(INST_TRY_CVT_TO_NUMERIC, envPtr);
+		}
+		break;
+	    case OPEN_PAREN:
 
-    /*
-     * Emit code for the second operand.
-     */
+		/* do nothing */
+		break;
+	    case FUNCTION:
 
-    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-    if (code != TCL_OK) {
-	goto done;
-    }
-    tokenPtr += (tokenPtr->numComponents + 1);
+		/*
+		 * Use the numWords count we've kept to invoke the
+		 * function command with the correct number of arguments.
+		 */
 
-    /*
-     * Emit a "logical and" or "logical or" instruction. This does not try
-     * to "short- circuit" the evaluation of both operands, but instead
-     * ensures that we either have a "1" or a "0" result.
-     */
+		if (numWords < 255) {
+		    TclEmitInstInt1(INST_INVOKE_STK1, numWords, envPtr);
+		} else {
+		    TclEmitInstInt4(INST_INVOKE_STK4, numWords, envPtr);
+		}
 
-    TclEmitOpcode(((opIndex==OP_LAND)? INST_LAND : INST_LOR), envPtr);
+		/* Restore any saved numWords value. */
+		numWords = nodePtr->left;
+		convert = 1;
+		break;
+	    case COMMA:
 
-    /*
-     * Now that we know the target of the forward jump, update it with the
-     * correct distance.
-     */
+		/* Each comma implies another function argument. */
+		numWords++;
+		break;
+	    case COLON:
+		if (TclFixupForwardJump(envPtr, &(jumpPtr->next->jump),
+			(envPtr->codeNext - envPtr->codeStart)
+			- jumpPtr->next->jump.codeOffset, 127)) {
+		    jumpPtr->offset += 3;
+		}
+		TclFixupForwardJump(envPtr, &(jumpPtr->jump),
+			jumpPtr->offset - jumpPtr->jump.codeOffset, 127);
+		convert |= jumpPtr->convert;
+		envPtr->currStackDepth = jumpPtr->depth + 1;
+		freePtr = jumpPtr;
+		jumpPtr = jumpPtr->next;
+		TclStackFree(interp, freePtr);
+		freePtr = jumpPtr;
+		jumpPtr = jumpPtr->next;
+		TclStackFree(interp, freePtr);
+		break;
+	    case AND:
+	    case OR:
+		TclEmitForwardJump(envPtr, (nodePtr->lexeme == AND)
+			?  TCL_FALSE_JUMP : TCL_TRUE_JUMP,
+			&(jumpPtr->next->jump));
+		TclEmitPush(TclRegisterNewLiteral(envPtr,
+			(nodePtr->lexeme == AND) ? "1" : "0", 1), envPtr);
+		TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP,
+			&(jumpPtr->next->next->jump));
+		TclFixupForwardJumpToHere(envPtr, &(jumpPtr->next->jump), 127);
+		if (TclFixupForwardJumpToHere(envPtr, &(jumpPtr->jump), 127)) {
+		    jumpPtr->next->next->jump.codeOffset += 3;
+		}
+		TclEmitPush(TclRegisterNewLiteral(envPtr,
+			(nodePtr->lexeme == AND) ? "0" : "1", 1), envPtr);
+		TclFixupForwardJumpToHere(envPtr, &(jumpPtr->next->next->jump),
+			127);
+		convert = 0;
+		envPtr->currStackDepth = jumpPtr->depth + 1;
+		freePtr = jumpPtr;
+		jumpPtr = jumpPtr->next;
+		TclStackFree(interp, freePtr);
+		freePtr = jumpPtr;
+		jumpPtr = jumpPtr->next;
+		TclStackFree(interp, freePtr);
+		freePtr = jumpPtr;
+		jumpPtr = jumpPtr->next;
+		TclStackFree(interp, freePtr);
+		break;
+	    default:
+		TclEmitOpcode(instruction[nodePtr->lexeme], envPtr);
+		convert = 0;
+		break;
+	    }
+	    if (nodePtr == rootPtr) {
 
-    dist = (envPtr->codeNext - envPtr->codeStart)
-	    - shortCircuitFixup.codeOffset;
-    TclFixupForwardJump(envPtr, &shortCircuitFixup, dist, 127);
-    *endPtrPtr = tokenPtr;
+		/* We're done */
+		return;
+	    }
+	    nodePtr = nodes + nodePtr->p.parent;
+	    continue;
+	}
 
-    done:
-    envPtr->currStackDepth = savedStackDepth + 1;
-    return code;
+	nodePtr->mark++;
+	switch (next) {
+	case OT_EMPTY:
+	    numWords = 1;	/* No arguments, so just the command */
+	    break;
+	case OT_LITERAL: {
+	    Tcl_Obj *const *litObjv = *litObjvPtr;
+	    Tcl_Obj *literal = *litObjv;
+
+	    if (optimize) {
+		int length, index;
+		const char *bytes = TclGetStringFromObj(literal, &length);
+		LiteralEntry *lePtr;
+		Tcl_Obj *objPtr;
+
+		index = TclRegisterNewLiteral(envPtr, bytes, length);
+		lePtr = envPtr->literalArrayPtr + index;
+		objPtr = lePtr->objPtr;
+		if ((objPtr->typePtr == NULL) && (literal->typePtr != NULL)) {
+		    /*
+		     * Would like to do this:
+		     *
+		     * lePtr->objPtr = literal;
+		     * Tcl_IncrRefCount(literal);
+		     * Tcl_DecrRefCount(objPtr);
+		     *
+		     * However, the design of the "global" and "local"
+		     * LiteralTable does not permit the value of lePtr->objPtr
+		     * to change.  So rather than replace lePtr->objPtr, we
+		     * do surgery to transfer our desired intrep into it.
+		     *
+		     */
+		    objPtr->typePtr = literal->typePtr;
+		    objPtr->internalRep = literal->internalRep;
+		    literal->typePtr = NULL;
+		}
+		TclEmitPush(index, envPtr);
+	    } else {
+		/*
+		 * When optimize==0, we know the expression is a one-off
+		 * and there's nothing to be gained from sharing literals
+		 * when they won't live long, and the copies we have already
+		 * have an appropriate intrep.  In this case, skip literal
+		 * registration that would enable sharing, and use the routine
+		 * that preserves intreps.
+		 */
+		TclEmitPush(TclAddLiteralObj(envPtr, literal, NULL), envPtr);
+	    }
+	    (*litObjvPtr)++;
+	    break;
+	}
+	case OT_TOKENS:
+	    TclCompileTokens(interp, tokenPtr+1, tokenPtr->numComponents,
+		    envPtr);
+	    tokenPtr += tokenPtr->numComponents + 1;
+	    break;
+	default:
+	    if (optimize && nodes[next].constant) {
+		Tcl_InterpState save = Tcl_SaveInterpState(interp, TCL_OK);
+		if (ExecConstantExprTree(interp, nodes, next, litObjvPtr)
+			== TCL_OK) {
+		    TclEmitPush(TclAddLiteralObj(envPtr,
+			    Tcl_GetObjResult(interp), NULL), envPtr);
+		} else {
+		    TclCompileSyntaxError(interp, envPtr);
+		}
+		Tcl_RestoreInterpState(interp, save);
+		convert = 0;
+	    } else {
+		nodePtr = nodes + next;
+	    }
+	}
+    }
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CompileCondExpr --
- *
- *	This procedure compiles a Tcl conditional expression:
- *	condExpr ::= lorExpr ['?' condExpr ':' condExpr]
+ * TclSingleOpCmd --
+ *	Implements the commands: ~, !, <<, >>, %, !=, ne, in, ni
+ *	in the ::tcl::mathop namespace.  These commands have no
+ *	extension to arbitrary arguments; they accept only exactly one
+ *	or exactly two arguments as suitable for the operator.
  *
  * Results:
- *	The return value is TCL_OK on a successful compilation and TCL_ERROR
- *	on failure. If TCL_OK is returned, a pointer to the token just after
- *	the last one in the subexpression is stored at the address in
- *	endPtrPtr. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
+ *	A standard Tcl return code and result left in interp.
  *
  * Side effects:
- *	Adds instructions to envPtr to evaluate the expression at runtime.
+ * 	None.
  *
  *----------------------------------------------------------------------
  */
 
-static int
-CompileCondExpr(exprTokenPtr, infoPtr, envPtr, endPtrPtr)
-    Tcl_Token *exprTokenPtr;	/* Points to TCL_TOKEN_SUB_EXPR token
-				 * containing the "?" operator. */
-    ExprInfo *infoPtr;		/* Describes the compilation state for the
-				 * expression being compiled. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
-    Tcl_Token **endPtrPtr;	/* If successful, a pointer to the token
-				 * just after the last token in the
-				 * subexpression is stored here. */
+int
+TclSingleOpCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
 {
-    JumpFixup jumpAroundThenFixup, jumpAroundElseFixup;
-				/* Used to update or replace one-byte jumps
-				 * around the then and else expressions when
-				 * their target PCs are determined. */
-    Tcl_Token *tokenPtr;
-    int elseCodeOffset, dist, code;
-    int savedStackDepth = envPtr->currStackDepth;
-
-    /*
-     * Emit code for the test.
-     */
+    TclOpCmdClientData *occdPtr = (TclOpCmdClientData *)clientData;
+    unsigned char lexeme;
+    OpNode nodes[2];
+    Tcl_Obj *const *litObjv = objv + 1;
+
+    if (objc != 1+occdPtr->i.numArgs) {
+	Tcl_WrongNumArgs(interp, 1, objv, occdPtr->expected);
+	return TCL_ERROR;
+    }
 
-    tokenPtr = exprTokenPtr+2;
-    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-    if (code != TCL_OK) {
-	goto done;
+    ParseLexeme(occdPtr->op, strlen(occdPtr->op), &lexeme, NULL);
+    nodes[0].lexeme = START;
+    nodes[0].mark = MARK_RIGHT;
+    nodes[0].right = 1;
+    nodes[1].lexeme = lexeme;
+    if (objc == 2) {
+	nodes[1].mark = MARK_RIGHT;
+    } else {
+	nodes[1].mark = MARK_LEFT;
+	nodes[1].left = OT_LITERAL;
     }
-    tokenPtr += (tokenPtr->numComponents + 1);
-    
-    /*
-     * Emit the jump to the "else" expression if the test was false.
-     */
-    
-    TclEmitForwardJump(envPtr, TCL_FALSE_JUMP, &jumpAroundThenFixup);
+    nodes[1].right = OT_LITERAL;
+    nodes[1].p.parent = 0;
 
-    /*
-     * Compile the "then" expression. Note that if a subexpression is only
-     * a primary, we need to try to convert it to numeric. We do this to
-     * support Tcl's policy of interpreting operands if at all possible as
-     * first integers, else floating-point numbers.
-     */
+    return ExecConstantExprTree(interp, nodes, 0, &litObjv);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSortingOpCmd --
+ *	Implements the commands: <, <=, >, >=, ==, eq
+ *	in the ::tcl::mathop namespace.  These commands are defined for
+ *	arbitrary number of arguments by computing the AND of the base
+ * 	operator applied to all neighbor argument pairs.
+ *
+ * Results:
+ *	A standard Tcl return code and result left in interp.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    infoPtr->hasOperators = 0;
-    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-    if (code != TCL_OK) {
-	goto done;
-    }
-    tokenPtr += (tokenPtr->numComponents + 1);
-    if (!infoPtr->hasOperators) {
-	TclEmitOpcode(INST_TRY_CVT_TO_NUMERIC, envPtr);
-    }
+int
+TclSortingOpCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    int code = TCL_OK;
 
-    /*
-     * Emit an unconditional jump around the "else" condExpr.
-     */
-    
-    TclEmitForwardJump(envPtr, TCL_UNCONDITIONAL_JUMP,
-	    &jumpAroundElseFixup);
+    if (objc < 3) {
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(1));
+    } else {
+	TclOpCmdClientData *occdPtr = (TclOpCmdClientData *)clientData;
+	Tcl_Obj **litObjv = (Tcl_Obj **) TclStackAlloc(interp,
+		2*(objc-2)*sizeof(Tcl_Obj *));
+	OpNode *nodes = (OpNode *) TclStackAlloc(interp,
+		2*(objc-2)*sizeof(OpNode));
+	unsigned char lexeme;
+	int i, lastAnd = 1;
+	Tcl_Obj *const *litObjPtrPtr = litObjv;
+
+	ParseLexeme(occdPtr->op, strlen(occdPtr->op), &lexeme, NULL);
+
+	litObjv[0] = objv[1];
+	nodes[0].lexeme = START;
+	nodes[0].mark = MARK_RIGHT;
+	for (i=2; i<objc-1; i++) {
+	    litObjv[2*(i-1)-1] = objv[i];
+	    nodes[2*(i-1)-1].lexeme = lexeme;
+	    nodes[2*(i-1)-1].mark = MARK_LEFT;
+	    nodes[2*(i-1)-1].left = OT_LITERAL;
+	    nodes[2*(i-1)-1].right = OT_LITERAL;
+
+	    litObjv[2*(i-1)] = objv[i];
+	    nodes[2*(i-1)].lexeme = AND;
+	    nodes[2*(i-1)].mark = MARK_LEFT;
+	    nodes[2*(i-1)].left = lastAnd;
+	    nodes[lastAnd].p.parent = 2*(i-1);
+
+	    nodes[2*(i-1)].right = 2*(i-1)+1;
+	    nodes[2*(i-1)+1].p.parent= 2*(i-1);
+
+	    lastAnd = 2*(i-1);
+	}
+	litObjv[2*(objc-2)-1] = objv[objc-1];
 
-    /*
-     * Compile the "else" expression.
-     */
+	nodes[2*(objc-2)-1].lexeme = lexeme;
+	nodes[2*(objc-2)-1].mark = MARK_LEFT;
+	nodes[2*(objc-2)-1].left = OT_LITERAL;
+	nodes[2*(objc-2)-1].right = OT_LITERAL;
 
-    envPtr->currStackDepth = savedStackDepth;
-    elseCodeOffset = (envPtr->codeNext - envPtr->codeStart);
-    infoPtr->hasOperators = 0;
-    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-    if (code != TCL_OK) {
-	goto done;
-    }
-    tokenPtr += (tokenPtr->numComponents + 1);
-    if (!infoPtr->hasOperators) {
-	TclEmitOpcode(INST_TRY_CVT_TO_NUMERIC, envPtr);
-    }
+	nodes[0].right = lastAnd;
+	nodes[lastAnd].p.parent = 0;
 
-    /*
-     * Fix up the second jump around the "else" expression.
-     */
+	code = ExecConstantExprTree(interp, nodes, 0, &litObjPtrPtr);
 
-    dist = (envPtr->codeNext - envPtr->codeStart)
-	    - jumpAroundElseFixup.codeOffset;
-    if (TclFixupForwardJump(envPtr, &jumpAroundElseFixup, dist, 127)) {
-	/*
-	 * Update the else expression's starting code offset since it
-	 * moved down 3 bytes too.
-	 */
-	
-	elseCodeOffset += 3;
+	TclStackFree(interp, nodes);
+	TclStackFree(interp, litObjv);
     }
-	
-    /*
-     * Fix up the first jump to the "else" expression if the test was false.
-     */
-    
-    dist = (elseCodeOffset - jumpAroundThenFixup.codeOffset);
-    TclFixupForwardJump(envPtr, &jumpAroundThenFixup, dist, 127);
-    *endPtrPtr = tokenPtr;
-
-    done:
-    envPtr->currStackDepth = savedStackDepth + 1;
     return code;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CompileMathFuncCall --
- *
- *	This procedure compiles a call on a math function in an expression:
- *	mathFuncCall ::= funcName '(' [condExpr {',' condExpr}] ')'
+ * TclVariadicOpCmd --
+ *	Implements the commands: +, *, &, |, ^, **
+ *	in the ::tcl::mathop namespace.  These commands are defined for
+ *	arbitrary number of arguments by repeatedly applying the base
+ *	operator with suitable associative rules.  When fewer than two
+ *	arguments are provided, suitable identity values are returned.
  *
  * Results:
- *	The return value is TCL_OK on a successful compilation and TCL_ERROR
- *	on failure. If TCL_OK is returned, a pointer to the token just after
- *	the last one in the subexpression is stored at the address in
- *	endPtrPtr. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
+ *	A standard Tcl return code and result left in interp.
  *
  * Side effects:
- *	Adds instructions to envPtr to evaluate the math function at
- *	runtime.
+ * 	None.
  *
  *----------------------------------------------------------------------
  */
 
-static int
-CompileMathFuncCall(exprTokenPtr, funcName, infoPtr, envPtr, endPtrPtr)
-    Tcl_Token *exprTokenPtr;	/* Points to TCL_TOKEN_SUB_EXPR token
-				 * containing the math function call. */
-    CONST char *funcName;	/* Name of the math function. */
-    ExprInfo *infoPtr;		/* Describes the compilation state for the
-				 * expression being compiled. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
-    Tcl_Token **endPtrPtr;	/* If successful, a pointer to the token
-				 * just after the last token in the
-				 * subexpression is stored here. */
+int
+TclVariadicOpCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
 {
-    Tcl_Interp *interp = infoPtr->interp;
-    Interp *iPtr = (Interp *) interp;
-    MathFunc *mathFuncPtr;
-    Tcl_HashEntry *hPtr;
-    Tcl_Token *tokenPtr, *afterSubexprPtr;
-    int code, i;
-
-    /*
-     * Look up the MathFunc record for the function.
-     */
+    TclOpCmdClientData *occdPtr = (TclOpCmdClientData *)clientData;
+    unsigned char lexeme;
+    int code;
 
-    code = TCL_OK;
-    hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, funcName);
-    if (hPtr == NULL) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"unknown math function \"", funcName, "\"", (char *) NULL);
-	code = TCL_ERROR;
-	goto done;
+    if (objc < 2) {
+	Tcl_SetObjResult(interp, Tcl_NewIntObj(occdPtr->i.identity));
+	return TCL_OK;
     }
-    mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr);
 
-    /*
-     * If not a builtin function, push an object with the function's name.
-     */
-
-    if (mathFuncPtr->builtinFuncIndex < 0) {
-	TclEmitPush(TclRegisterNewLiteral(envPtr, funcName, -1), envPtr);
-    }
+    ParseLexeme(occdPtr->op, strlen(occdPtr->op), &lexeme, NULL);
+    lexeme |= BINARY;
+
+    if (objc == 2) {
+	Tcl_Obj *litObjv[2];
+	OpNode nodes[2];
+	int decrMe = 0;
+	Tcl_Obj *const *litObjPtrPtr = litObjv;
+
+	if (lexeme == EXPON) {
+	    litObjv[1] = Tcl_NewIntObj(occdPtr->i.identity);
+	    Tcl_IncrRefCount(litObjv[1]);
+	    decrMe = 1;
+	    litObjv[0] = objv[1];
+	    nodes[0].lexeme = START;
+	    nodes[0].mark = MARK_RIGHT;
+	    nodes[0].right = 1;
+	    nodes[1].lexeme = lexeme;
+	    nodes[1].mark = MARK_LEFT;
+	    nodes[1].left = OT_LITERAL;
+	    nodes[1].right = OT_LITERAL;
+	    nodes[1].p.parent = 0;
+	} else {
+	    if (lexeme == DIVIDE) {
+		litObjv[0] = Tcl_NewDoubleObj(1.0);
+	    } else {
+		litObjv[0] = Tcl_NewIntObj(occdPtr->i.identity);
+	    }
+	    Tcl_IncrRefCount(litObjv[0]);
+	    litObjv[1] = objv[1];
+	    nodes[0].lexeme = START;
+	    nodes[0].mark = MARK_RIGHT;
+	    nodes[0].right = 1;
+	    nodes[1].lexeme = lexeme;
+	    nodes[1].mark = MARK_LEFT;
+	    nodes[1].left = OT_LITERAL;
+	    nodes[1].right = OT_LITERAL;
+	    nodes[1].p.parent = 0;
+	}
 
-    /*
-     * Compile any arguments for the function.
-     */
+	code = ExecConstantExprTree(interp, nodes, 0, &litObjPtrPtr);
 
-    tokenPtr = exprTokenPtr+2;
-    afterSubexprPtr = exprTokenPtr + (exprTokenPtr->numComponents + 1);
-    if (mathFuncPtr->numArgs > 0) {
-	for (i = 0;  i < mathFuncPtr->numArgs;  i++) {
-	    if (tokenPtr == afterSubexprPtr) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		        "too few arguments for math function", -1);
-		code = TCL_ERROR;
-		goto done;
-	    }
-	    code = CompileSubExpr(tokenPtr, infoPtr, envPtr);
-	    if (code != TCL_OK) {
-		goto done;
+	Tcl_DecrRefCount(litObjv[decrMe]);
+	return code;
+    } else {
+	Tcl_Obj *const *litObjv = objv + 1;
+	OpNode *nodes = (OpNode *) TclStackAlloc(interp,
+		(objc-1)*sizeof(OpNode));
+	int i, lastOp = OT_LITERAL;
+
+	nodes[0].lexeme = START;
+	nodes[0].mark = MARK_RIGHT;
+	if (lexeme == EXPON) {
+	    for (i=objc-2; i>0; i-- ) {
+		nodes[i].lexeme = lexeme;
+		nodes[i].mark = MARK_LEFT;
+		nodes[i].left = OT_LITERAL;
+		nodes[i].right = lastOp;
+		if (lastOp >= 0) {
+		    nodes[lastOp].p.parent = i;
+		}
+		lastOp = i;
+	    }
+	} else {
+	    for (i=1; i<objc-1; i++ ) {
+		nodes[i].lexeme = lexeme;
+		nodes[i].mark = MARK_LEFT;
+		nodes[i].left = lastOp;
+		if (lastOp >= 0) {
+		    nodes[lastOp].p.parent = i;
+		}
+		nodes[i].right = OT_LITERAL;
+		lastOp = i;
 	    }
-	    tokenPtr += (tokenPtr->numComponents + 1);
 	}
-	if (tokenPtr != afterSubexprPtr) {
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		    "too many arguments for math function", -1);
-	    code = TCL_ERROR;
-	    goto done;
-	} 
-    } else if (tokenPtr != afterSubexprPtr) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		"too many arguments for math function", -1);
-	code = TCL_ERROR;
-	goto done;
-    }
-    
-    /*
-     * Compile the call on the math function. Note that the "objc" argument
-     * count for non-builtin functions is incremented by 1 to include the
-     * function name itself.
-     */
+	nodes[0].right = lastOp;
+	nodes[lastOp].p.parent = 0;
 
-    if (mathFuncPtr->builtinFuncIndex >= 0) { /* a builtin function */
-	/*
-	 * Adjust the current stack depth by the number of arguments
-	 * of the builtin function. This cannot be handled by the 
-	 * TclEmitInstInt1 macro as the number of arguments is not
-	 * passed as an operand.
-	 */
+	code = ExecConstantExprTree(interp, nodes, 0, &litObjv);
 
-	if (envPtr->maxStackDepth < envPtr->currStackDepth) {
-	    envPtr->maxStackDepth = envPtr->currStackDepth;
-	}
-	TclEmitInstInt1(INST_CALL_BUILTIN_FUNC1,
-	        mathFuncPtr->builtinFuncIndex, envPtr);
-	envPtr->currStackDepth -= mathFuncPtr->numArgs;
-    } else {
-	TclEmitInstInt1(INST_CALL_FUNC1, (mathFuncPtr->numArgs+1), envPtr);
-    }
-    *endPtrPtr = afterSubexprPtr;
+	TclStackFree(interp, nodes);
 
-    done:
-    return code;
+	return code;
+    }
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * LogSyntaxError --
- *
- *	This procedure is invoked after an error occurs when compiling an
- *	expression. It sets the interpreter result to an error message
- *	describing the error.
+ * TclNoIdentOpCmd --
+ *	Implements the commands: -, /
+ *	in the ::tcl::mathop namespace.  These commands are defined for
+ *	arbitrary non-zero number of arguments by repeatedly applying
+ *	the base operator with suitable associative rules.  When no
+ *	arguments are provided, an error is raised.
  *
  * Results:
- *	None.
+ *	A standard Tcl return code and result left in interp.
  *
  * Side effects:
- *	Sets the interpreter result to an error message describing the
- *	expression that was being compiled when the error occurred.
+ * 	None.
  *
  *----------------------------------------------------------------------
  */
 
-static void
-LogSyntaxError(infoPtr)
-    ExprInfo *infoPtr;		/* Describes the compilation state for the
-				 * expression being compiled. */
+int
+TclNoIdentOpCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
 {
-    int numBytes = (infoPtr->lastChar - infoPtr->expr);
-    char buffer[100];
-
-    sprintf(buffer, "syntax error in expression \"%.*s\"",
-	    ((numBytes > 60)? 60 : numBytes), infoPtr->expr);
-    Tcl_ResetResult(infoPtr->interp);
-    Tcl_AppendStringsToObj(Tcl_GetObjResult(infoPtr->interp),
-	    buffer, (char *) NULL);
+    TclOpCmdClientData *occdPtr = (TclOpCmdClientData *)clientData;
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, occdPtr->expected);
+	return TCL_ERROR;
+    }
+    return TclVariadicOpCmd(clientData, interp, objc, objv);
 }
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclCompile.c b/generic/tclCompile.c
index 41ee45b..fee30bd 100644
--- a/generic/tclCompile.c
+++ b/generic/tclCompile.c
@@ -1,15 +1,15 @@
-/* 
+/*
  * tclCompile.c --
  *
- *	This file contains procedures that compile Tcl commands or parts
- *	of commands (like quoted strings or nested sub-commands) into a
- *	sequence of instructions ("bytecodes"). 
+ *	This file contains procedures that compile Tcl commands or parts of
+ *	commands (like quoted strings or nested sub-commands) into a sequence
+ *	of instructions ("bytecodes").
  *
  * Copyright (c) 1996-1998 Sun Microsystems, Inc.
- * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+ * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
@@ -18,7 +18,7 @@
 /*
  * Table of all AuxData types.
  */
- 
+
 static Tcl_HashTable auxDataTypeTable;
 static int auxDataTypeTableInitialized; /* 0 means not yet initialized. */
 
@@ -40,10 +40,10 @@ static int traceInitialized = 0;
 
 /*
  * A table describing the Tcl bytecode instructions. Entries in this table
- * must correspond to the instruction opcode definitions in tclCompile.h.
- * The names "op1" and "op4" refer to an instruction's one or four byte
- * first operand. Similarly, "stktop" and "stknext" refer to the topmost
- * and next to topmost stack elements.
+ * must correspond to the instruction opcode definitions in tclCompile.h. The
+ * names "op1" and "op4" refer to an instruction's one or four byte first
+ * operand. Similarly, "stktop" and "stknext" refer to the topmost and next to
+ * topmost stack elements.
  *
  * Note that the load, store, and incr instructions do not distinguish local
  * from global variables; the bytecode interpreter at runtime uses the
@@ -51,276 +51,399 @@ static int traceInitialized = 0;
  */
 
 InstructionDesc tclInstructionTable[] = {
-   /* Name	      Bytes stackEffect #Opnds Operand types	Stack top, next	  */
-    {"done",		  1,   -1,        0,   {OPERAND_NONE}},
+    /* Name	      Bytes stackEffect #Opnds  Operand types */
+    {"done",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Finish ByteCode execution and return stktop (top stack item) */
-    {"push1",		  2,   +1,         1,   {OPERAND_UINT1}},
+    {"push1",		  2,   +1,         1,	{OPERAND_UINT1}},
 	/* Push object at ByteCode objArray[op1] */
-    {"push4",		  5,   +1,         1,   {OPERAND_UINT4}},
+    {"push4",		  5,   +1,         1,	{OPERAND_UINT4}},
 	/* Push object at ByteCode objArray[op4] */
-    {"pop",		  1,   -1,        0,   {OPERAND_NONE}},
+    {"pop",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Pop the topmost stack object */
-    {"dup",		  1,   +1,         0,   {OPERAND_NONE}},
+    {"dup",		  1,   +1,         0,	{OPERAND_NONE}},
 	/* Duplicate the topmost stack object and push the result */
-    {"concat1",		  2,   INT_MIN,    1,   {OPERAND_UINT1}},
+    {"concat1",		  2,   INT_MIN,    1,	{OPERAND_UINT1}},
 	/* Concatenate the top op1 items and push result */
-    {"invokeStk1",	  2,   INT_MIN,    1,   {OPERAND_UINT1}},
+    {"invokeStk1",	  2,   INT_MIN,    1,	{OPERAND_UINT1}},
 	/* Invoke command named objv[0]; <objc,objv> = <op1,top op1> */
-    {"invokeStk4",	  5,   INT_MIN,    1,   {OPERAND_UINT4}},
+    {"invokeStk4",	  5,   INT_MIN,    1,	{OPERAND_UINT4}},
 	/* Invoke command named objv[0]; <objc,objv> = <op4,top op4> */
-    {"evalStk",		  1,   0,          0,   {OPERAND_NONE}},
+    {"evalStk",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Evaluate command in stktop using Tcl_EvalObj. */
-    {"exprStk",		  1,   0,          0,   {OPERAND_NONE}},
+    {"exprStk",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Execute expression in stktop using Tcl_ExprStringObj. */
-    
-    {"loadScalar1",	  2,   1,          1,   {OPERAND_UINT1}},
+
+    {"loadScalar1",	  2,   1,          1,	{OPERAND_LVT1}},
 	/* Load scalar variable at index op1 <= 255 in call frame */
-    {"loadScalar4",	  5,   1,          1,   {OPERAND_UINT4}},
+    {"loadScalar4",	  5,   1,          1,	{OPERAND_LVT4}},
 	/* Load scalar variable at index op1 >= 256 in call frame */
-    {"loadScalarStk",	  1,   0,          0,   {OPERAND_NONE}},
+    {"loadScalarStk",	  1,   0,          0,	{OPERAND_NONE}},
 	/* Load scalar variable; scalar's name is stktop */
-    {"loadArray1",	  2,   0,          1,   {OPERAND_UINT1}},
+    {"loadArray1",	  2,   0,          1,	{OPERAND_LVT1}},
 	/* Load array element; array at slot op1<=255, element is stktop */
-    {"loadArray4",	  5,   0,          1,   {OPERAND_UINT4}},
+    {"loadArray4",	  5,   0,          1,	{OPERAND_LVT4}},
 	/* Load array element; array at slot op1 > 255, element is stktop */
-    {"loadArrayStk",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"loadArrayStk",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Load array element; element is stktop, array name is stknext */
-    {"loadStk",		  1,   0,          0,   {OPERAND_NONE}},
+    {"loadStk",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Load general variable; unparsed variable name is stktop */
-    {"storeScalar1",	  2,   0,          1,   {OPERAND_UINT1}},
+    {"storeScalar1",	  2,   0,          1,	{OPERAND_LVT1}},
 	/* Store scalar variable at op1<=255 in frame; value is stktop */
-    {"storeScalar4",	  5,   0,          1,   {OPERAND_UINT4}},
+    {"storeScalar4",	  5,   0,          1,	{OPERAND_LVT4}},
 	/* Store scalar variable at op1 > 255 in frame; value is stktop */
-    {"storeScalarStk",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"storeScalarStk",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Store scalar; value is stktop, scalar name is stknext */
-    {"storeArray1",	  2,   -1,         1,   {OPERAND_UINT1}},
+    {"storeArray1",	  2,   -1,         1,	{OPERAND_LVT1}},
 	/* Store array element; array at op1<=255, value is top then elem */
-    {"storeArray4",	  5,   -1,          1,   {OPERAND_UINT4}},
+    {"storeArray4",	  5,   -1,         1,	{OPERAND_LVT4}},
 	/* Store array element; array at op1>=256, value is top then elem */
-    {"storeArrayStk",	  1,   -2,         0,   {OPERAND_NONE}},
+    {"storeArrayStk",	  1,   -2,         0,	{OPERAND_NONE}},
 	/* Store array element; value is stktop, then elem, array names */
-    {"storeStk",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"storeStk",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Store general variable; value is stktop, then unparsed name */
-    
-    {"incrScalar1",	  2,   0,          1,   {OPERAND_UINT1}},
+
+    {"incrScalar1",	  2,   0,          1,	{OPERAND_LVT1}},
 	/* Incr scalar at index op1<=255 in frame; incr amount is stktop */
-    {"incrScalarStk",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"incrScalarStk",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Incr scalar; incr amount is stktop, scalar's name is stknext */
-    {"incrArray1",	  2,   -1,         1,   {OPERAND_UINT1}},
+    {"incrArray1",	  2,   -1,         1,	{OPERAND_LVT1}},
 	/* Incr array elem; arr at slot op1<=255, amount is top then elem */
-    {"incrArrayStk",	  1,   -2,         0,   {OPERAND_NONE}},
+    {"incrArrayStk",	  1,   -2,         0,	{OPERAND_NONE}},
 	/* Incr array element; amount is top then elem then array names */
-    {"incrStk",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"incrStk",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Incr general variable; amount is stktop then unparsed var name */
-    {"incrScalar1Imm",	  3,   +1,         2,   {OPERAND_UINT1, OPERAND_INT1}},
+    {"incrScalar1Imm",	  3,   +1,         2,	{OPERAND_LVT1, OPERAND_INT1}},
 	/* Incr scalar at slot op1 <= 255; amount is 2nd operand byte */
-    {"incrScalarStkImm",  2,   0,          1,   {OPERAND_INT1}},
+    {"incrScalarStkImm",  2,   0,          1,	{OPERAND_INT1}},
 	/* Incr scalar; scalar name is stktop; incr amount is op1 */
-    {"incrArray1Imm",	  3,   0,         2,   {OPERAND_UINT1, OPERAND_INT1}},
+    {"incrArray1Imm",	  3,   0,          2,	{OPERAND_LVT1, OPERAND_INT1}},
 	/* Incr array elem; array at slot op1 <= 255, elem is stktop,
 	 * amount is 2nd operand byte */
-    {"incrArrayStkImm",	  2,   -1,         1,   {OPERAND_INT1}},
+    {"incrArrayStkImm",	  2,   -1,         1,	{OPERAND_INT1}},
 	/* Incr array element; elem is top then array name, amount is op1 */
-    {"incrStkImm",	  2,   0,         1,   {OPERAND_INT1}},
+    {"incrStkImm",	  2,   0,	   1,	{OPERAND_INT1}},
 	/* Incr general variable; unparsed name is top, amount is op1 */
-    
-    {"jump1",		  2,   0,          1,   {OPERAND_INT1}},
+
+    {"jump1",		  2,   0,          1,	{OPERAND_INT1}},
 	/* Jump relative to (pc + op1) */
-    {"jump4",		  5,   0,          1,   {OPERAND_INT4}},
+    {"jump4",		  5,   0,          1,	{OPERAND_INT4}},
 	/* Jump relative to (pc + op4) */
-    {"jumpTrue1",	  2,   -1,         1,   {OPERAND_INT1}},
+    {"jumpTrue1",	  2,   -1,         1,	{OPERAND_INT1}},
 	/* Jump relative to (pc + op1) if stktop expr object is true */
-    {"jumpTrue4",	  5,   -1,         1,   {OPERAND_INT4}},
+    {"jumpTrue4",	  5,   -1,         1,	{OPERAND_INT4}},
 	/* Jump relative to (pc + op4) if stktop expr object is true */
-    {"jumpFalse1",	  2,   -1,         1,   {OPERAND_INT1}},
+    {"jumpFalse1",	  2,   -1,         1,	{OPERAND_INT1}},
 	/* Jump relative to (pc + op1) if stktop expr object is false */
-    {"jumpFalse4",	  5,   -1,         1,   {OPERAND_INT4}},
+    {"jumpFalse4",	  5,   -1,         1,	{OPERAND_INT4}},
 	/* Jump relative to (pc + op4) if stktop expr object is false */
 
-    {"lor",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"lor",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Logical or:	push (stknext || stktop) */
-    {"land",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"land",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Logical and:	push (stknext && stktop) */
-    {"bitor",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"bitor",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Bitwise or:	push (stknext | stktop) */
-    {"bitxor",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"bitxor",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Bitwise xor	push (stknext ^ stktop) */
-    {"bitand",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"bitand",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Bitwise and:	push (stknext & stktop) */
-    {"eq",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"eq",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Equal:	push (stknext == stktop) */
-    {"neq",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"neq",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Not equal:	push (stknext != stktop) */
-    {"lt",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"lt",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Less:	push (stknext < stktop) */
-    {"gt",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"gt",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Greater:	push (stknext || stktop) */
-    {"le",		  1,   -1,         0,   {OPERAND_NONE}},
-	/* Logical or:	push (stknext || stktop) */
-    {"ge",		  1,   -1,         0,   {OPERAND_NONE}},
-	/* Logical or:	push (stknext || stktop) */
-    {"lshift",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"le",		  1,   -1,         0,	{OPERAND_NONE}},
+	/* Less or equal: push (stknext || stktop) */
+    {"ge",		  1,   -1,         0,	{OPERAND_NONE}},
+	/* Greater or equal: push (stknext || stktop) */
+    {"lshift",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Left shift:	push (stknext << stktop) */
-    {"rshift",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"rshift",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Right shift:	push (stknext >> stktop) */
-    {"add",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"add",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Add:		push (stknext + stktop) */
-    {"sub",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"sub",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Sub:		push (stkext - stktop) */
-    {"mult",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"mult",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Multiply:	push (stknext * stktop) */
-    {"div",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"div",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Divide:	push (stknext / stktop) */
-    {"mod",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"mod",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Mod:		push (stknext % stktop) */
-    {"uplus",		  1,   0,          0,   {OPERAND_NONE}},
+    {"uplus",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Unary plus:	push +stktop */
-    {"uminus",		  1,   0,          0,   {OPERAND_NONE}},
+    {"uminus",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Unary minus:	push -stktop */
-    {"bitnot",		  1,   0,          0,   {OPERAND_NONE}},
+    {"bitnot",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Bitwise not:	push ~stktop */
-    {"not",		  1,   0,          0,   {OPERAND_NONE}},
+    {"not",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Logical not:	push !stktop */
-    {"callBuiltinFunc1",  2,   1,          1,   {OPERAND_UINT1}},
+    {"callBuiltinFunc1",  2,   1,          1,	{OPERAND_UINT1}},
 	/* Call builtin math function with index op1; any args are on stk */
-    {"callFunc1",	  2,   INT_MIN,    1,   {OPERAND_UINT1}},
-	/* Call non-builtin func objv[0]; <objc,objv>=<op1,top op1>  */
-    {"tryCvtToNumeric",	  1,   0,          0,   {OPERAND_NONE}},
+    {"callFunc1",	  2,   INT_MIN,    1,	{OPERAND_UINT1}},
+	/* Call non-builtin func objv[0]; <objc,objv>=<op1,top op1> */
+    {"tryCvtToNumeric",	  1,   0,          0,	{OPERAND_NONE}},
 	/* Try converting stktop to first int then double if possible. */
 
-    {"break",		  1,   0,          0,   {OPERAND_NONE}},
+    {"break",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Abort closest enclosing loop; if none, return TCL_BREAK code. */
-    {"continue",	  1,   0,          0,   {OPERAND_NONE}},
-	/* Skip to next iteration of closest enclosing loop; if none,
-	 * return TCL_CONTINUE code. */
+    {"continue",	  1,   0,          0,	{OPERAND_NONE}},
+	/* Skip to next iteration of closest enclosing loop; if none, return
+	 * TCL_CONTINUE code. */
 
-    {"foreach_start4",	  5,   0,          1,   {OPERAND_UINT4}},
+    {"foreach_start4",	  5,   0,          1,	{OPERAND_AUX4}},
 	/* Initialize execution of a foreach loop. Operand is aux data index
 	 * of the ForeachInfo structure for the foreach command. */
-    {"foreach_step4",	  5,   +1,         1,   {OPERAND_UINT4}},
+    {"foreach_step4",	  5,   +1,         1,	{OPERAND_AUX4}},
 	/* "Step" or begin next iteration of foreach loop. Push 0 if to
-	 *  terminate loop, else push 1. */
+	 * terminate loop, else push 1. */
 
-    {"beginCatch4",	  5,   0,          1,   {OPERAND_UINT4}},
-	/* Record start of catch with the operand's exception index.
-	 * Push the current stack depth onto a special catch stack. */
-    {"endCatch",	  1,   0,          0,   {OPERAND_NONE}},
+    {"beginCatch4",	  5,   0,          1,	{OPERAND_UINT4}},
+	/* Record start of catch with the operand's exception index. Push the
+	 * current stack depth onto a special catch stack. */
+    {"endCatch",	  1,   0,          0,	{OPERAND_NONE}},
 	/* End of last catch. Pop the bytecode interpreter's catch stack. */
-    {"pushResult",	  1,   +1,         0,   {OPERAND_NONE}},
+    {"pushResult",	  1,   +1,         0,	{OPERAND_NONE}},
 	/* Push the interpreter's object result onto the stack. */
-    {"pushReturnCode",	  1,   +1,         0,   {OPERAND_NONE}},
-	/* Push interpreter's return code (e.g. TCL_OK or TCL_ERROR) as
-	 * a new object onto the stack. */
-    {"streq",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"pushReturnCode",	  1,   +1,         0,	{OPERAND_NONE}},
+	/* Push interpreter's return code (e.g. TCL_OK or TCL_ERROR) as a new
+	 * object onto the stack. */
+
+    {"streq",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Str Equal:	push (stknext eq stktop) */
-    {"strneq",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"strneq",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Str !Equal:	push (stknext neq stktop) */
-    {"strcmp",		  1,   -1,         0,   {OPERAND_NONE}},
+    {"strcmp",		  1,   -1,         0,	{OPERAND_NONE}},
 	/* Str Compare:	push (stknext cmp stktop) */
-    {"strlen",		  1,   0,          0,   {OPERAND_NONE}},
+    {"strlen",		  1,   0,          0,	{OPERAND_NONE}},
 	/* Str Length:	push (strlen stktop) */
-    {"strindex",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"strindex",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Str Index:	push (strindex stknext stktop) */
-    {"strmatch",	  2,   -1,         1,   {OPERAND_INT1}},
+    {"strmatch",	  2,   -1,         1,	{OPERAND_INT1}},
 	/* Str Match:	push (strmatch stknext stktop) opnd == nocase */
-    {"list",		  5,   INT_MIN,    1,   {OPERAND_UINT4}},
+
+    {"list",		  5,   INT_MIN,    1,	{OPERAND_UINT4}},
 	/* List:	push (stk1 stk2 ... stktop) */
-    {"listindex",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"listIndex",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* List Index:	push (listindex stknext stktop) */
-    {"listlength",	  1,   0,          0,   {OPERAND_NONE}},
+    {"listLength",	  1,   0,          0,	{OPERAND_NONE}},
 	/* List Len:	push (listlength stktop) */
-    {"appendScalar1",	  2,   0,          1,   {OPERAND_UINT1}},
+
+    {"appendScalar1",	  2,   0,          1,	{OPERAND_LVT1}},
 	/* Append scalar variable at op1<=255 in frame; value is stktop */
-    {"appendScalar4",	  5,   0,          1,   {OPERAND_UINT4}},
+    {"appendScalar4",	  5,   0,          1,	{OPERAND_LVT4}},
 	/* Append scalar variable at op1 > 255 in frame; value is stktop */
-    {"appendArray1",	  2,   -1,         1,   {OPERAND_UINT1}},
+    {"appendArray1",	  2,   -1,         1,	{OPERAND_LVT1}},
 	/* Append array element; array at op1<=255, value is top then elem */
-    {"appendArray4",	  5,   -1,         1,   {OPERAND_UINT4}},
+    {"appendArray4",	  5,   -1,         1,	{OPERAND_LVT4}},
 	/* Append array element; array at op1>=256, value is top then elem */
-    {"appendArrayStk",	  1,   -2,         0,   {OPERAND_NONE}},
+    {"appendArrayStk",	  1,   -2,         0,	{OPERAND_NONE}},
 	/* Append array element; value is stktop, then elem, array names */
-    {"appendStk",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"appendStk",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Append general variable; value is stktop, then unparsed name */
-    {"lappendScalar1",	  2,   0,          1,   {OPERAND_UINT1}},
+    {"lappendScalar1",	  2,   0,          1,	{OPERAND_LVT1}},
 	/* Lappend scalar variable at op1<=255 in frame; value is stktop */
-    {"lappendScalar4",	  5,   0,          1,   {OPERAND_UINT4}},
+    {"lappendScalar4",	  5,   0,          1,	{OPERAND_LVT4}},
 	/* Lappend scalar variable at op1 > 255 in frame; value is stktop */
-    {"lappendArray1",	  2,   -1,         1,   {OPERAND_UINT1}},
+    {"lappendArray1",	  2,   -1,         1,	{OPERAND_LVT1}},
 	/* Lappend array element; array at op1<=255, value is top then elem */
-    {"lappendArray4",	  5,   -1,         1,   {OPERAND_UINT4}},
+    {"lappendArray4",	  5,   -1,         1,	{OPERAND_LVT4}},
 	/* Lappend array element; array at op1>=256, value is top then elem */
-    {"lappendArrayStk",	  1,   -2,         0,   {OPERAND_NONE}},
+    {"lappendArrayStk",	  1,   -2,         0,	{OPERAND_NONE}},
 	/* Lappend array element; value is stktop, then elem, array names */
-    {"lappendStk",	  1,   -1,         0,   {OPERAND_NONE}},
+    {"lappendStk",	  1,   -1,         0,	{OPERAND_NONE}},
 	/* Lappend general variable; value is stktop, then unparsed name */
-    {"lindexMulti",	  5,   INT_MIN,   1,   {OPERAND_UINT4}},
-        /* Lindex with generalized args, operand is number of stacked objs 
-	 * used: (operand-1) entries from stktop are the indices; then list 
-	 * to process. */
-    {"over",		  5,   +1,         1,   {OPERAND_UINT4}},
-        /* Duplicate the arg-th element from top of stack (TOS=0) */
-    {"lsetList",          1,   -2,         0,   {OPERAND_NONE}},
-        /* Four-arg version of 'lset'. stktop is old value; next is
-         * new element value, next is the index list; pushes new value */
-    {"lsetFlat",          5,   INT_MIN,   1,   {OPERAND_UINT4}},
-        /* Three- or >=5-arg version of 'lset', operand is number of 
-	 * stacked objs: stktop is old value, next is new element value, next 
-	 * come (operand-2) indices; pushes the new value.
+
+    {"lindexMulti",	  5,   INT_MIN,    1,	{OPERAND_UINT4}},
+	/* Lindex with generalized args, operand is number of stacked objs
+	 * used: (operand-1) entries from stktop are the indices; then list to
+	 * process. */
+    {"over",		  5,   +1,         1,	{OPERAND_UINT4}},
+	/* Duplicate the arg-th element from top of stack (TOS=0) */
+    {"lsetList",          1,   -2,         0,	{OPERAND_NONE}},
+	/* Four-arg version of 'lset'. stktop is old value; next is new
+	 * element value, next is the index list; pushes new value */
+    {"lsetFlat",          5,   INT_MIN,    1,	{OPERAND_UINT4}},
+	/* Three- or >=5-arg version of 'lset', operand is number of stacked
+	 * objs: stktop is old value, next is new element value, next come
+	 * (operand-2) indices; pushes the new value.
 	 */
-    {0, 0, 0, 0, {OPERAND_NONE}}
+
+    {"returnImm",	  9,   -1,         2,	{OPERAND_INT4, OPERAND_UINT4}},
+	/* Compiled [return], code, level are operands; options and result
+	 * are on the stack. */
+    {"expon",		  1,   -1,	   0,	{OPERAND_NONE}},
+	/* Binary exponentiation operator: push (stknext ** stktop) */
+
+    /*
+     * NOTE: the stack effects of expandStkTop and invokeExpanded are wrong -
+     * but it cannot be done right at compile time, the stack effect is only
+     * known at run time. The value for invokeExpanded is estimated better at
+     * compile time.
+     * See the comments further down in this file, where INST_INVOKE_EXPANDED
+     * is emitted.
+     */
+    {"expandStart",       1,    0,          0,	{OPERAND_NONE}},
+	/* Start of command with {*} (expanded) arguments */
+    {"expandStkTop",      5,    0,          1,	{OPERAND_UINT4}},
+	/* Expand the list at stacktop: push its elements on the stack */
+    {"invokeExpanded",    1,    0,          0,	{OPERAND_NONE}},
+	/* Invoke the command marked by the last 'expandStart' */
+
+    {"listIndexImm",	  5,	0,	   1,	{OPERAND_IDX4}},
+	/* List Index:	push (lindex stktop op4) */
+    {"listRangeImm",	  9,	0,	   2,	{OPERAND_IDX4, OPERAND_IDX4}},
+	/* List Range:	push (lrange stktop op4 op4) */
+    {"startCommand",	  9,	0,	   2,	{OPERAND_INT4,OPERAND_UINT4}},
+	/* Start of bytecoded command: op is the length of the cmd's code, op2
+	 * is number of commands here */
+
+    {"listIn",		  1,	-1,	   0,	{OPERAND_NONE}},
+	/* List containment: push [lsearch stktop stknext]>=0) */
+    {"listNotIn",	  1,	-1,	   0,	{OPERAND_NONE}},
+	/* List negated containment: push [lsearch stktop stknext]<0) */
+
+    {"pushReturnOpts",	  1,	+1,	   0,	{OPERAND_NONE}},
+	/* Push the interpreter's return option dictionary as an object on the
+	 * stack. */
+    {"returnStk",	  1,	-2,	   0,	{OPERAND_NONE}},
+	/* Compiled [return]; options and result are on the stack, code and
+	 * level are in the options. */
+
+    {"dictGet",		  5,	INT_MIN,   1,	{OPERAND_UINT4}},
+	/* The top op4 words (min 1) are a key path into the dictionary just
+	 * below the keys on the stack, and all those values are replaced by
+	 * the value read out of that key-path (like [dict get]).
+	 * Stack:  ... dict key1 ... keyN => ... value */
+    {"dictSet",		  9,	INT_MIN,   2,	{OPERAND_UINT4, OPERAND_LVT4}},
+	/* Update a dictionary value such that the keys are a path pointing to
+	 * the value. op4#1 = numKeys, op4#2 = LVTindex
+	 * Stack:  ... key1 ... keyN value => ... newDict */
+    {"dictUnset",	  9,	INT_MIN,   2,	{OPERAND_UINT4, OPERAND_LVT4}},
+	/* Update a dictionary value such that the keys are not a path pointing
+	 * to any value. op4#1 = numKeys, op4#2 = LVTindex
+	 * Stack:  ... key1 ... keyN => ... newDict */
+    {"dictIncrImm",	  9,	0,	   2,	{OPERAND_INT4, OPERAND_LVT4}},
+	/* Update a dictionary value such that the value pointed to by key is
+	 * incremented by some value (or set to it if the key isn't in the
+	 * dictionary at all). op4#1 = incrAmount, op4#2 = LVTindex
+	 * Stack:  ... key => ... newDict */
+    {"dictAppend",	  5,	-1,	   1,	{OPERAND_LVT4}},
+	/* Update a dictionary value such that the value pointed to by key has
+	 * some value string-concatenated onto it. op4 = LVTindex
+	 * Stack:  ... key valueToAppend => ... newDict */
+    {"dictLappend",	  5,	-1,	   1,	{OPERAND_LVT4}},
+	/* Update a dictionary value such that the value pointed to by key has
+	 * some value list-appended onto it. op4 = LVTindex
+	 * Stack:  ... key valueToAppend => ... newDict */
+    {"dictFirst",	  5,	+2,	   1,	{OPERAND_LVT4}},
+	/* Begin iterating over the dictionary, using the local scalar
+	 * indicated by op4 to hold the iterator state. If doneBool is true,
+	 * dictDone *must* be called later on.
+	 * Stack:  ... dict => ... value key doneBool */
+    {"dictNext",	  5,	+3,	   1,	{OPERAND_LVT4}},
+	/* Get the next iteration from the iterator in op4's local scalar.
+	 * Stack:  ... => ... value key doneBool */
+    {"dictDone",	  5,	0,	   1,	{OPERAND_LVT4}},
+	/* Terminate the iterator in op4's local scalar. */
+    {"dictUpdateStart",   9,    0,	   2,	{OPERAND_LVT4, OPERAND_AUX4}},
+	/* Create the variables (described in the aux data referred to by the
+	 * second immediate argument) to mirror the state of the dictionary in
+	 * the variable referred to by the first immediate argument. The list
+	 * of keys (popped from the stack) must be the same length as the list
+	 * of variables.
+	 * Stack:  ... keyList => ... */
+    {"dictUpdateEnd",	  9,    -1,	   2,	{OPERAND_LVT4, OPERAND_AUX4}},
+	/* Reflect the state of local variables (described in the aux data
+	 * referred to by the second immediate argument) back to the state of
+	 * the dictionary in the variable referred to by the first immediate
+	 * argument. The list of keys (popped from the stack) must be the same
+	 * length as the list of variables.
+	 * Stack:  ... keyList => ... */
+    {"jumpTable",	  5,	-1,	   1,	{OPERAND_AUX4}},
+	/* Jump according to the jump-table (in AuxData as indicated by the
+	 * operand) and the argument popped from the list. Always executes the
+	 * next instruction if no match against the table's entries was found.
+	 * Stack:  ... value => ...
+	 * Note that the jump table contains offsets relative to the PC when
+	 * it points to this instruction; the code is relocatable. */
+    {"upvar",            5,     0,        1,   {OPERAND_LVT4}},
+         /* finds level and otherName in stack, links to local variable at
+	  * index op1. Leaves the level on stack. */
+    {"nsupvar",          5,     0,        1,   {OPERAND_LVT4}},
+         /* finds namespace and otherName in stack, links to local variable at
+	  * index op1. Leaves the namespace on stack. */
+    {"variable",         5,     0,        1,   {OPERAND_LVT4}},
+         /* finds namespace and otherName in stack, links to local variable at
+	  * index op1. Leaves the namespace on stack. */
+    {"syntax",	 	 9,   -1,         2,	{OPERAND_INT4, OPERAND_UINT4}},
+	/* Compiled bytecodes to signal syntax error. */
+    {"reverse",		 5,    0,         1,	{OPERAND_UINT4}},
+	/* Reverse the order of the arg elements at the top of stack */
+
+    {"regexp",		 2,   -1,         1,	{OPERAND_INT1}},
+	/* Regexp:	push (regexp stknext stktop) opnd == nocase */
+
+    {"existScalar",	 5,    1,         1,	{OPERAND_LVT4}},
+	/* Test if scalar variable at index op1 in call frame exists */
+    {"existArray",	 5,    0,         1,	{OPERAND_LVT4}},
+	/* Test if array element exists; array at slot op1, element is
+	 * stktop */
+    {"existArrayStk",	 1,    -1,        0,	{OPERAND_NONE}},
+	/* Test if array element exists; element is stktop, array name is
+	 * stknext */
+    {"existStk",	 1,    0,         0,	{OPERAND_NONE}},
+	/* Test if general variable exists; unparsed variable name is stktop*/
+    {0, 0, 0, 0, {0}}
 };
 
 /*
  * Prototypes for procedures defined later in this file:
  */
 
-static void		DupByteCodeInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *copyPtr));
-static unsigned char *	EncodeCmdLocMap _ANSI_ARGS_((
-			    CompileEnv *envPtr, ByteCode *codePtr,
-			    unsigned char *startPtr));
-static void		EnterCmdExtentData _ANSI_ARGS_((
-    			    CompileEnv *envPtr, int cmdNumber,
-			    int numSrcBytes, int numCodeBytes));
-static void		EnterCmdStartData _ANSI_ARGS_((
-    			    CompileEnv *envPtr, int cmdNumber,
-			    int srcOffset, int codeOffset));
-static void		FreeByteCodeInternalRep _ANSI_ARGS_((
-    			    Tcl_Obj *objPtr));
-static int		GetCmdLocEncodingSize _ANSI_ARGS_((
-			    CompileEnv *envPtr));
-static void		LogCompilationInfo _ANSI_ARGS_((Tcl_Interp *interp,
-        		    CONST char *script, CONST char *command,
-			    int length));
+static void		DupByteCodeInternalRep(Tcl_Obj *srcPtr,
+			    Tcl_Obj *copyPtr);
+static unsigned char *	EncodeCmdLocMap(CompileEnv *envPtr,
+			    ByteCode *codePtr, unsigned char *startPtr);
+static void		EnterCmdExtentData(CompileEnv *envPtr,
+			    int cmdNumber, int numSrcBytes, int numCodeBytes);
+static void		EnterCmdStartData(CompileEnv *envPtr,
+			    int cmdNumber, int srcOffset, int codeOffset);
+static void		FreeByteCodeInternalRep(Tcl_Obj *objPtr);
+static int		GetCmdLocEncodingSize(CompileEnv *envPtr);
 #ifdef TCL_COMPILE_STATS
-static void		RecordByteCodeStats _ANSI_ARGS_((
-			    ByteCode *codePtr));
+static void		RecordByteCodeStats(ByteCode *codePtr);
 #endif /* TCL_COMPILE_STATS */
-static int		SetByteCodeFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-
-#ifdef TCL_TIP280
-/* TIP #280 : Helper for building the per-word line information of all
- * compiled commands */
-static void		EnterCmdWordData _ANSI_ARGS_((
-    			    ExtCmdLoc *eclPtr, int srcOffset, Tcl_Token* tokenPtr,
-			    CONST char* cmd, int len, int numWords, int line,
-			    int* clNext, int** lines, CompileEnv* envPtr));
-static void             ReleaseCmdWordData _ANSI_ARGS_((ExtCmdLoc* eclPtr));
-#endif
-
+static int		SetByteCodeFromAny(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr);
+static int		FormatInstruction(ByteCode *codePtr,
+			    unsigned char *pc, Tcl_Obj *bufferObj);
+static void		PrintSourceToObj(Tcl_Obj *appendObj,
+			    const char *stringPtr, int maxChars);
+/*
+ * TIP #280: Helper for building the per-word line information of all compiled
+ * commands.
+ */
+static void		EnterCmdWordData(ExtCmdLoc *eclPtr, int srcOffset,
+			    Tcl_Token *tokenPtr, const char *cmd, int len,
+			    int numWords, int line, int* clNext, int **lines,
+			    CompileEnv* envPtr);
+static void		ReleaseCmdWordData(ExtCmdLoc *eclPtr);
 
 /*
- * The structure below defines the bytecode Tcl object type by
- * means of procedures that can be invoked by generic object code.
+ * The structure below defines the bytecode Tcl object type by means of
+ * procedures that can be invoked by generic object code.
  */
 
 Tcl_ObjType tclByteCodeType = {
-    "bytecode",				/* name */
-    FreeByteCodeInternalRep,		/* freeIntRepProc */
-    DupByteCodeInternalRep,		/* dupIntRepProc */
-    (Tcl_UpdateStringProc *) NULL,	/* updateStringProc */
-    SetByteCodeFromAny			/* setFromAnyProc */
+    "bytecode",			/* name */
+    FreeByteCodeInternalRep,	/* freeIntRepProc */
+    DupByteCodeInternalRep,	/* dupIntRepProc */
+    NULL,			/* updateStringProc */
+    SetByteCodeFromAny		/* setFromAnyProc */
 };
 
 /*
@@ -330,10 +453,10 @@ Tcl_ObjType tclByteCodeType = {
  *
  *	Part of the bytecode Tcl object type implementation. Attempts to
  *	generate an byte code internal form for the Tcl object "objPtr" by
- *	compiling its string representation.  This function also takes
- *	a hook procedure that will be invoked to perform any needed post
- *	processing on the compilation results before generating byte
- *	codes.  interp is compilation context and may not be NULL.
+ *	compiling its string representation. This function also takes a hook
+ *	procedure that will be invoked to perform any needed post processing
+ *	on the compilation results before generating byte codes. interp is
+ *	compilation context and may not be NULL.
  *
  * Results:
  *	The return value is a standard Tcl object result. If an error occurs
@@ -342,58 +465,48 @@ Tcl_ObjType tclByteCodeType = {
  *
  * Side effects:
  *	Frees the old internal representation. If no error occurs, then the
- *	compiled code is stored as "objPtr"s bytecode representation.
- *	Also, if debugging, initializes the "tcl_traceCompile" Tcl variable
- *	used to trace compilations.
+ *	compiled code is stored as "objPtr"s bytecode representation. Also, if
+ *	debugging, initializes the "tcl_traceCompile" Tcl variable used to
+ *	trace compilations.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclSetByteCodeFromAny(interp, objPtr, hookProc, clientData)
-    Tcl_Interp *interp;		/* The interpreter for which the code is
-				 * being compiled.  Must not be NULL. */
-    Tcl_Obj *objPtr;		/* The object to make a ByteCode object. */
-    CompileHookProc *hookProc;	/* Procedure to invoke after compilation. */
-    ClientData clientData;	/* Hook procedure private data. */
+TclSetByteCodeFromAny(
+    Tcl_Interp *interp,		/* The interpreter for which the code is being
+				 * compiled. Must not be NULL. */
+    Tcl_Obj *objPtr,		/* The object to make a ByteCode object. */
+    CompileHookProc *hookProc,	/* Procedure to invoke after compilation. */
+    ClientData clientData)	/* Hook procedure private data. */
 {
     Interp *iPtr = (Interp *) interp;
-    CompileEnv compEnv;		/* Compilation environment structure
-				 * allocated in frame. */
-    LiteralTable *localTablePtr = &(compEnv.localLitTable);
-    int length, nested, result;
-    char *string;
-#ifdef TCL_TIP280
+    CompileEnv compEnv;		/* Compilation environment structure allocated
+				 * in frame. */
+    int length, result = TCL_OK;
+    const char *stringPtr;
     ContLineLoc* clLocPtr;
-#endif
+
 #ifdef TCL_COMPILE_DEBUG
     if (!traceInitialized) {
-        if (Tcl_LinkVar(interp, "tcl_traceCompile",
-	            (char *) &tclTraceCompile,  TCL_LINK_INT) != TCL_OK) {
-            panic("SetByteCodeFromAny: unable to create link for tcl_traceCompile variable");
-        }
-        traceInitialized = 1;
+	if (Tcl_LinkVar(interp, "tcl_traceCompile",
+		(char *) &tclTraceCompile, TCL_LINK_INT) != TCL_OK) {
+	    Tcl_Panic("SetByteCodeFromAny: unable to create link for tcl_traceCompile variable");
+	}
+	traceInitialized = 1;
     }
 #endif
 
-    if (iPtr->evalFlags & TCL_BRACKET_TERM) {
-	nested = 1;
-    } else {
-	nested = 0;
-    }
-    string = Tcl_GetStringFromObj(objPtr, &length);
-#ifndef TCL_TIP280
-    TclInitCompileEnv(interp, &compEnv, string, length);
-#else
+    stringPtr = TclGetStringFromObj(objPtr, &length);
+
     /*
-     * TIP #280. Pick up the CmdFrame in which the BC compiler was invoked
-     * and use to initialize the tracking in the compiler. This information
-     * was stored by TclCompEvalObj (tclExecute.c), and ProcCompileProc
-     * (tclProc.c).
+     * TIP #280: Pick up the CmdFrame in which the BC compiler was invoked and
+     * use to initialize the tracking in the compiler. This information was
+     * stored by TclCompEvalObj and ProcCompileProc.
      */
 
-    TclInitCompileEnv(interp, &compEnv, string, length,
-		      iPtr->invokeCmdFramePtr, iPtr->invokeWord);
+    TclInitCompileEnv(interp, &compEnv, stringPtr, length,
+	    iPtr->invokeCmdFramePtr, iPtr->invokeWord);
     /*
      * Now we check if we have data about invisible continuation lines for the
      * script, and make it available to the compile environment, if so.
@@ -412,51 +525,42 @@ TclSetByteCodeFromAny(interp, objPtr, hookProc, clientData)
 	compEnv.clNext = &compEnv.clLoc->loc[0];
 	Tcl_Preserve (compEnv.clLoc);
     }
-#endif
-    result = TclCompileScript(interp, string, length, nested, &compEnv);
 
-    if (result == TCL_OK) {
-	/*
-	 * Successful compilation. Add a "done" instruction at the end.
-	 */
+    TclCompileScript(interp, stringPtr, length, &compEnv);
 
-	compEnv.numSrcBytes = iPtr->termOffset;
-	TclEmitOpcode(INST_DONE, &compEnv);
+    /*
+     * Successful compilation. Add a "done" instruction at the end.
+     */
 
-	/*
-	 * Invoke the compilation hook procedure if one exists.
-	 */
+    TclEmitOpcode(INST_DONE, &compEnv);
 
-	if (hookProc) {
-	    result = (*hookProc)(interp, &compEnv, clientData);
-	}
+    /*
+     * Invoke the compilation hook procedure if one exists.
+     */
+
+    if (hookProc) {
+	result = (*hookProc)(interp, &compEnv, clientData);
+    }
+
+    /*
+     * Change the object into a ByteCode object. Ownership of the literal
+     * objects and aux data items is given to the ByteCode object.
+     */
 
-	/*
-	 * Change the object into a ByteCode object. Ownership of the literal
-	 * objects and aux data items is given to the ByteCode object.
-	 */
-    
 #ifdef TCL_COMPILE_DEBUG
-	TclVerifyLocalLiteralTable(&compEnv);
+    TclVerifyLocalLiteralTable(&compEnv);
 #endif /*TCL_COMPILE_DEBUG*/
 
-	if (result == TCL_OK) {
-	    TclInitByteCodeObj(objPtr, &compEnv);
+    if (result == TCL_OK) {
+	TclInitByteCodeObj(objPtr, &compEnv);
 #ifdef TCL_COMPILE_DEBUG
-	    if (tclTraceCompile >= 2) {
-		TclPrintByteCodeObj(interp, objPtr);
-	    }
-#endif /* TCL_COMPILE_DEBUG */
+	if (tclTraceCompile >= 2) {
+	    TclPrintByteCodeObj(interp, objPtr);
+	    fflush(stdout);
 	}
+#endif /* TCL_COMPILE_DEBUG */
     }
-	
-    /*
-     * Free storage allocated during compilation.
-     */
-    
-    if (localTablePtr->buckets != localTablePtr->staticBuckets) {
-	ckfree((char *) localTablePtr->buckets);
-    }
+
     TclFreeCompileEnv(&compEnv);
     return result;
 }
@@ -477,24 +581,24 @@ TclSetByteCodeFromAny(interp, objPtr, hookProc, clientData)
  *
  * Side effects:
  *	Frees the old internal representation. If no error occurs, then the
- *	compiled code is stored as "objPtr"s bytecode representation.
- *	Also, if debugging, initializes the "tcl_traceCompile" Tcl variable
- *	used to trace compilations.
+ *	compiled code is stored as "objPtr"s bytecode representation. Also, if
+ *	debugging, initializes the "tcl_traceCompile" Tcl variable used to
+ *	trace compilations.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetByteCodeFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* The interpreter for which the code is
-				 * being compiled.  Must not be NULL. */
-    Tcl_Obj *objPtr;		/* The object to make a ByteCode object. */
+SetByteCodeFromAny(
+    Tcl_Interp *interp,		/* The interpreter for which the code is being
+				 * compiled. Must not be NULL. */
+    Tcl_Obj *objPtr)		/* The object to make a ByteCode object. */
 {
     if (interp == NULL) {
 	return TCL_ERROR;
     }
-    return TclSetByteCodeFromAny(interp, objPtr,
-	    (CompileHookProc *) NULL, (ClientData) NULL);
+    (void) TclSetByteCodeFromAny(interp, objPtr, NULL, (ClientData) NULL);
+    return TCL_OK;
 }
 
 /*
@@ -502,8 +606,8 @@ SetByteCodeFromAny(interp, objPtr)
  *
  * DupByteCodeInternalRep --
  *
- *	Part of the bytecode Tcl object type implementation. However, it
- *	does not copy the internal representation of a bytecode Tcl_Obj, but
+ *	Part of the bytecode Tcl object type implementation. However, it does
+ *	not copy the internal representation of a bytecode Tcl_Obj, but
  *	instead leaves the new object untyped (with a NULL type pointer).
  *	Code will be compiled for the new object only if necessary.
  *
@@ -517,9 +621,9 @@ SetByteCodeFromAny(interp, objPtr)
  */
 
 static void
-DupByteCodeInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;		/* Object with internal rep to copy. */
-    Tcl_Obj *copyPtr;		/* Object with internal rep to set. */
+DupByteCodeInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    Tcl_Obj *copyPtr)		/* Object with internal rep to set. */
 {
     return;
 }
@@ -529,35 +633,33 @@ DupByteCodeInternalRep(srcPtr, copyPtr)
  *
  * FreeByteCodeInternalRep --
  *
- *	Part of the bytecode Tcl object type implementation. Frees the
- *	storage associated with a bytecode object's internal representation
- *	unless its code is actively being executed.
+ *	Part of the bytecode Tcl object type implementation. Frees the storage
+ *	associated with a bytecode object's internal representation unless its
+ *	code is actively being executed.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The bytecode object's internal rep is marked invalid and its
- *	code gets freed unless the code is actively being executed.
- *	In that case the cleanup is delayed until the last execution
- *	of the code completes.
+ *	The bytecode object's internal rep is marked invalid and its code gets
+ *	freed unless the code is actively being executed. In that case the
+ *	cleanup is delayed until the last execution of the code completes.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeByteCodeInternalRep(objPtr)
-    register Tcl_Obj *objPtr;	/* Object whose internal rep to free. */
+FreeByteCodeInternalRep(
+    register Tcl_Obj *objPtr)	/* Object whose internal rep to free. */
 {
-    register ByteCode *codePtr =
-	    (ByteCode *) objPtr->internalRep.otherValuePtr;
+    register ByteCode *codePtr = (ByteCode *)
+	    objPtr->internalRep.twoPtrValue.ptr1;
 
     codePtr->refCount--;
     if (codePtr->refCount <= 0) {
 	TclCleanupByteCode(codePtr);
     }
     objPtr->typePtr = NULL;
-    objPtr->internalRep.otherValuePtr = NULL;
 }
 
 /*
@@ -573,24 +675,21 @@ FreeByteCodeInternalRep(objPtr)
  *	None.
  *
  * Side effects:
- *	Frees objPtr's bytecode internal representation and sets its type
- *	and objPtr->internalRep.otherValuePtr NULL. Also releases its
- *	literals and frees its auxiliary data items.
+ *	Frees objPtr's bytecode internal representation and sets its type NULL
+ *	Also releases its literals and frees its auxiliary data items.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclCleanupByteCode(codePtr)
-    register ByteCode *codePtr;	/* Points to the ByteCode to free. */
+TclCleanupByteCode(
+    register ByteCode *codePtr)	/* Points to the ByteCode to free. */
 {
     Tcl_Interp *interp = (Tcl_Interp *) *codePtr->interpHandle;
-#ifdef TCL_TIP280
-    Interp* iPtr = (Interp*) interp;
-#endif
+    Interp *iPtr = (Interp *) interp;
     int numLitObjects = codePtr->numLitObjects;
     int numAuxDataItems = codePtr->numAuxDataItems;
-    register Tcl_Obj **objArrayPtr;
+    register Tcl_Obj **objArrayPtr, *objPtr;
     register AuxData *auxDataPtr;
     int i;
 #ifdef TCL_COMPILE_STATS
@@ -606,13 +705,13 @@ TclCleanupByteCode(codePtr)
 	statsPtr->currentSrcBytes -= (double) codePtr->numSrcBytes;
 	statsPtr->currentByteCodeBytes -= (double) codePtr->structureSize;
 
-	statsPtr->currentInstBytes   -= (double) codePtr->numCodeBytes;
-	statsPtr->currentLitBytes    -=
-		(double) (codePtr->numLitObjects * sizeof(Tcl_Obj *)); 
-	statsPtr->currentExceptBytes -=
-		(double) (codePtr->numExceptRanges * sizeof(ExceptionRange));
-	statsPtr->currentAuxBytes    -=
-		(double) (codePtr->numAuxDataItems * sizeof(AuxData));
+	statsPtr->currentInstBytes -= (double) codePtr->numCodeBytes;
+	statsPtr->currentLitBytes -= (double)
+		codePtr->numLitObjects * sizeof(Tcl_Obj *);
+	statsPtr->currentExceptBytes -= (double)
+		codePtr->numExceptRanges * sizeof(ExceptionRange);
+	statsPtr->currentAuxBytes -= (double)
+		codePtr->numAuxDataItems * sizeof(AuxData);
 	statsPtr->currentCmdMapBytes -= (double) codePtr->numCmdLocBytes;
 
 	Tcl_GetTime(&destroyTime);
@@ -620,9 +719,9 @@ TclCleanupByteCode(codePtr)
 	if (lifetimeSec > 2000) {	/* avoid overflow */
 	    lifetimeSec = 2000;
 	}
-	lifetimeMicroSec =
-	    1000000*lifetimeSec + (destroyTime.usec - codePtr->createTime.usec);
-	
+	lifetimeMicroSec = 1000000 * lifetimeSec +
+		(destroyTime.usec - codePtr->createTime.usec);
+
 	log2 = TclLog2(lifetimeMicroSec);
 	if (log2 > 31) {
 	    log2 = 31;
@@ -632,21 +731,28 @@ TclCleanupByteCode(codePtr)
 #endif /* TCL_COMPILE_STATS */
 
     /*
-     * A single heap object holds the ByteCode structure and its code,
-     * object, command location, and auxiliary data arrays. This means we
-     * only need to 1) decrement the ref counts of the LiteralEntry's in
-     * its literal array, 2) call the free procs for the auxiliary data
-     * items, and 3) free the ByteCode structure's heap object.
+     * A single heap object holds the ByteCode structure and its code, object,
+     * command location, and auxiliary data arrays. This means we only need to
+     * 1) decrement the ref counts of the LiteralEntry's in its literal array,
+     * 2) call the free procs for the auxiliary data items, 3) free the
+     * localCache if it is unused, and finally 4) free the ByteCode
+     * structure's heap object.
+     *
+     * The case for TCL_BYTECODE_PRECOMPILED (precompiled ByteCodes, like
+     * those generated from tbcload) is special, as they doesn't make use of
+     * the global literal table. They instead maintain private references to
+     * their literals which must be decremented.
      *
-     * The case for TCL_BYTECODE_PRECOMPILED (precompiled ByteCodes,
-     * like those generated from tbcload) is special, as they doesn't
-     * make use of the global literal table.  They instead maintain
-     * private references to their literals which must be decremented.
+     * In order to insure a proper and efficient cleanup of the literal array
+     * when it contains non-shared literals [Bug 983660], we also distinguish
+     * the case of an interpreter being deleted (signaled by interp == NULL).
+     * Also, as the interp deletion will remove the global literal table
+     * anyway, we avoid the extra cost of updating it for each literal being
+     * released.
      */
 
-    if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
-	register Tcl_Obj *objPtr;
- 
+    if ((codePtr->flags & TCL_BYTECODE_PRECOMPILED) || (interp == NULL)) {
+
 	objArrayPtr = codePtr->objArrayPtr;
 	for (i = 0;  i < numLitObjects;  i++) {
 	    objPtr = *objArrayPtr;
@@ -656,36 +762,30 @@ TclCleanupByteCode(codePtr)
 	    objArrayPtr++;
 	}
 	codePtr->numLitObjects = 0;
-    } else if (interp != NULL) {
-	/*
-	 * If the interp has already been freed, then Tcl will have already 
-	 * forcefully released all the literals used by ByteCodes compiled
-	 * with respect to that interp.
-	 */
-	 
+    } else {
 	objArrayPtr = codePtr->objArrayPtr;
 	for (i = 0;  i < numLitObjects;  i++) {
 	    /*
 	     * TclReleaseLiteral sets a ByteCode's object array entry NULL to
 	     * indicate that it has already freed the literal.
 	     */
-	    
-	    if (*objArrayPtr != NULL) {
-		TclReleaseLiteral(interp, *objArrayPtr);
+
+	    objPtr = *objArrayPtr;
+	    if (objPtr != NULL) {
+		TclReleaseLiteral(interp, objPtr);
 	    }
 	    objArrayPtr++;
 	}
     }
-    
+
     auxDataPtr = codePtr->auxDataArrayPtr;
     for (i = 0;  i < numAuxDataItems;  i++) {
 	if (auxDataPtr->type->freeProc != NULL) {
-	    (*auxDataPtr->type->freeProc)(auxDataPtr->clientData);
+	    (auxDataPtr->type->freeProc)(auxDataPtr->clientData);
 	}
 	auxDataPtr++;
     }
 
-#ifdef TCL_TIP280
     /*
      * TIP #280. Release the location data associated with this byte code
      * structure, if any. NOTE: The interp we belong to may be gone already,
@@ -695,43 +795,43 @@ TclCleanupByteCode(codePtr)
      */
 
     if (iPtr) {
-	Tcl_HashEntry* hePtr = Tcl_FindHashEntry (iPtr->lineBCPtr, (char *) codePtr);
+	Tcl_HashEntry *hePtr = Tcl_FindHashEntry(iPtr->lineBCPtr,
+		(char *) codePtr);
 	if (hePtr) {
-	    ExtCmdLoc* eclPtr = (ExtCmdLoc*) Tcl_GetHashValue (hePtr);
-
-	    ReleaseCmdWordData (eclPtr);
-	    Tcl_DeleteHashEntry (hePtr);
+	    ReleaseCmdWordData(Tcl_GetHashValue(hePtr));
+	    Tcl_DeleteHashEntry(hePtr);
 	}
     }
-#endif
+
+    if (codePtr->localCachePtr && (--codePtr->localCachePtr->refCount == 0)) {
+	TclFreeLocalCache(interp, codePtr->localCachePtr);
+    }
 
     TclHandleRelease(codePtr->interpHandle);
     ckfree((char *) codePtr);
 }
 
-#ifdef TCL_TIP280
 static void
-ReleaseCmdWordData (eclPtr)
-     ExtCmdLoc* eclPtr;
+ReleaseCmdWordData(
+    ExtCmdLoc *eclPtr)
 {
-    int        i;
+    int i;
 
     if (eclPtr->type == TCL_LOCATION_SOURCE) {
-	Tcl_DecrRefCount (eclPtr->path);
+	Tcl_DecrRefCount(eclPtr->path);
     }
-    for (i=0; i < eclPtr->nuloc; i++) {
-	ckfree ((char*) eclPtr->loc[i].line);
+    for (i=0 ; i<eclPtr->nuloc ; i++) {
+	ckfree((char *) eclPtr->loc[i].line);
     }
 
     if (eclPtr->loc != NULL) {
-	ckfree ((char*) eclPtr->loc);
+	ckfree((char *) eclPtr->loc);
     }
 
     Tcl_DeleteHashTable (&eclPtr->litInfo);
 
-    ckfree ((char*) eclPtr);
+    ckfree((char *) eclPtr);
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
@@ -751,27 +851,21 @@ ReleaseCmdWordData (eclPtr)
  */
 
 void
-#ifndef TCL_TIP280
-TclInitCompileEnv(interp, envPtr, string, numBytes)
-#else
-TclInitCompileEnv(interp, envPtr, string, numBytes, invoker, word)
-#endif
-    Tcl_Interp *interp;		 /* The interpreter for which a CompileEnv
-				  * structure is initialized. */
-    register CompileEnv *envPtr; /* Points to the CompileEnv structure to
-				  * initialize. */
-    char *string;		 /* The source string to be compiled. */
-    int numBytes;		 /* Number of bytes in source string. */
-#ifdef TCL_TIP280
-    CONST CmdFrame* invoker;     /* Location context invoking the bcc */
-    int word;                    /* Index of the word in that context
-				  * getting compiled */
-#endif
+TclInitCompileEnv(
+    Tcl_Interp *interp,		/* The interpreter for which a CompileEnv
+				 * structure is initialized. */
+    register CompileEnv *envPtr,/* Points to the CompileEnv structure to
+				 * initialize. */
+    const char *stringPtr,	/* The source string to be compiled. */
+    int numBytes,		/* Number of bytes in source string. */
+    const CmdFrame *invoker,	/* Location context invoking the bcc */
+    int word)			/* Index of the word in that context getting
+				 * compiled */
 {
     Interp *iPtr = (Interp *) interp;
-    
+
     envPtr->iPtr = iPtr;
-    envPtr->source = string;
+    envPtr->source = stringPtr;
     envPtr->numSrcBytes = numBytes;
     envPtr->procPtr = iPtr->compiledProcPtr;
     iPtr->compiledProcPtr = NULL;
@@ -791,17 +885,17 @@ TclInitCompileEnv(interp, envPtr, string, numBytes, invoker, word)
     envPtr->literalArrayNext = 0;
     envPtr->literalArrayEnd = COMPILEENV_INIT_NUM_OBJECTS;
     envPtr->mallocedLiteralArray = 0;
-    
+
     envPtr->exceptArrayPtr = envPtr->staticExceptArraySpace;
     envPtr->exceptArrayNext = 0;
     envPtr->exceptArrayEnd = COMPILEENV_INIT_EXCEPT_RANGES;
     envPtr->mallocedExceptArray = 0;
-    
+
     envPtr->cmdMapPtr = envPtr->staticCmdMapSpace;
     envPtr->cmdMapEnd = COMPILEENV_INIT_CMD_MAP_SIZE;
     envPtr->mallocedCmdMap = 0;
+    envPtr->atCmdStart = 1;
 
-#ifdef TCL_TIP280
     /*
      * TIP #280: Set up the extended command location information, based on
      * the context invoking the byte code compiler. This structure is used to
@@ -811,11 +905,11 @@ TclInitCompileEnv(interp, envPtr, string, numBytes, invoker, word)
      * non-compiling evaluator
      */
 
-    envPtr->extCmdMapPtr        = (ExtCmdLoc*) ckalloc (sizeof (ExtCmdLoc));
-    envPtr->extCmdMapPtr->loc   = NULL;
-    envPtr->extCmdMapPtr->nloc  = 0;
+    envPtr->extCmdMapPtr = (ExtCmdLoc *) ckalloc(sizeof(ExtCmdLoc));
+    envPtr->extCmdMapPtr->loc = NULL;
+    envPtr->extCmdMapPtr->nloc = 0;
     envPtr->extCmdMapPtr->nuloc = 0;
-    envPtr->extCmdMapPtr->path  = NULL;
+    envPtr->extCmdMapPtr->path = NULL;
     Tcl_InitHashTable(&envPtr->extCmdMapPtr->litInfo, TCL_ONE_WORD_KEYS);
 
     if (invoker == NULL ||
@@ -825,61 +919,75 @@ TclInitCompileEnv(interp, envPtr, string, numBytes, invoker, word)
 	 * dynamic context.
 	 */
 
-	envPtr->line               = 1;
-	envPtr->extCmdMapPtr->type = (envPtr->procPtr
-				      ? TCL_LOCATION_PROC
-				      : TCL_LOCATION_BC);
+	envPtr->line = 1;
+	envPtr->extCmdMapPtr->type =
+		(envPtr->procPtr ? TCL_LOCATION_PROC : TCL_LOCATION_BC);
     } else {
-        /* Initialize the compiler using the context, making counting absolute
-	 * to that context. Note that the context can be byte code
-	 * execution. In that case we have to fill out the missing pieces
-	 * (line, path, ...). Which may make change the type as well.
+        /*
+	 * Initialize the compiler using the context, making counting absolute
+	 * to that context. Note that the context can be byte code execution.
+	 * In that case we have to fill out the missing pieces (line, path,
+	 * ...) which may make change the type as well.
 	 */
 
-	CmdFrame ctx = *invoker;
-	int      pc  = 0;
+	CmdFrame* ctxPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame));
+	int pc = 0;
+
+	*ctxPtr = *invoker;
 
 	if (invoker->type == TCL_LOCATION_BC) {
-	    /* Note: Type BC => ctx.data.eval.path    is not used.
+	    /*
+	     * Note: Type BC => ctx.data.eval.path    is not used.
 	     *                  ctx.data.tebc.codePtr is used instead.
-		 */
-	    TclGetSrcInfoForPc (&ctx);
+	     */
+
+	    TclGetSrcInfoForPc(ctxPtr);
 	    pc = 1;
 	}
 
-	if ((ctx.nline <= word) || (ctx.line[word] < 0)) {
-	    /* Word is not a literal, relative counting */
+	if ((ctxPtr->nline <= word) || (ctxPtr->line[word] < 0)) {
+	    /*
+	     * Word is not a literal, relative counting.
+	     */
 
-	    envPtr->line               = 1;
-	    envPtr->extCmdMapPtr->type = (envPtr->procPtr
-					  ? TCL_LOCATION_PROC
-					  : TCL_LOCATION_BC);
+	    envPtr->line = 1;
+	    envPtr->extCmdMapPtr->type =
+		    (envPtr->procPtr ? TCL_LOCATION_PROC : TCL_LOCATION_BC);
 
-	    if (pc && (ctx.type == TCL_LOCATION_SOURCE)) {
+	    if (pc && (ctxPtr->type == TCL_LOCATION_SOURCE)) {
 		/*
 		 * The reference made by 'TclGetSrcInfoForPc' is dead.
 		 */
-		Tcl_DecrRefCount(ctx.data.eval.path);
+		Tcl_DecrRefCount(ctxPtr->data.eval.path);
 	    }
 	} else {
-	    envPtr->line               = ctx.line [word];
-	    envPtr->extCmdMapPtr->type = ctx.type;
-	    envPtr->extCmdMapPtr->path = ctx.data.eval.path;
+	    envPtr->line = ctxPtr->line[word];
+	    envPtr->extCmdMapPtr->type = ctxPtr->type;
+
+	    if (ctxPtr->type == TCL_LOCATION_SOURCE) {
+		envPtr->extCmdMapPtr->path = ctxPtr->data.eval.path;
 
-	    if (ctx.type == TCL_LOCATION_SOURCE) {
 		if (pc) {
-		    /* The reference 'TclGetSrcInfoForPc' made is transfered */
-		    ctx.data.eval.path = NULL;
+		    /*
+		     * The reference 'TclGetSrcInfoForPc' made is transfered.
+		     */
+
+		    ctxPtr->data.eval.path = NULL;
 		} else {
-		    /* We have a new reference here */
-		    Tcl_IncrRefCount (ctx.data.eval.path);
+		    /*
+		     * We have a new reference here.
+		     */
+
+		    Tcl_IncrRefCount(ctxPtr->data.eval.path);
 		}
 	    }
 	}
 
-	/* ctx going out of scope */
+	TclStackFree(interp, ctxPtr);
     }
 
+    envPtr->extCmdMapPtr->start = envPtr->line;
+
     /*
      * Initialize the data about invisible continuation lines as empty,
      * i.e. not used. The caller (TclSetByteCodeFromAny) will set this up, if
@@ -888,7 +996,6 @@ TclInitCompileEnv(interp, envPtr, string, numBytes, invoker, word)
 
     envPtr->clLoc  = NULL;
     envPtr->clNext = NULL;
-#endif
 
     envPtr->auxDataArrayPtr = envPtr->staticAuxDataArraySpace;
     envPtr->auxDataArrayNext = 0;
@@ -906,22 +1013,26 @@ TclInitCompileEnv(interp, envPtr, string, numBytes, invoker, word)
  *
  * Results:
  *	None.
- * 
+ *
  * Side effects:
- *	Allocated storage in the CompileEnv structure is freed. Note that
- *	its local literal table is not deleted and its literal objects are
- *	not released. In addition, storage referenced by its auxiliary data
- *	items is not freed. This is done so that, when compilation is
- *	successful, "ownership" of these objects and aux data items is
- *	handed over to the corresponding ByteCode structure.
+ *	Allocated storage in the CompileEnv structure is freed. Note that its
+ *	local literal table is not deleted and its literal objects are not
+ *	released. In addition, storage referenced by its auxiliary data items
+ *	is not freed. This is done so that, when compilation is successful,
+ *	"ownership" of these objects and aux data items is handed over to the
+ *	corresponding ByteCode structure.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclFreeCompileEnv(envPtr)
-    register CompileEnv *envPtr; /* Points to the CompileEnv structure. */
+TclFreeCompileEnv(
+    register CompileEnv *envPtr)/* Points to the CompileEnv structure. */
 {
+    if (envPtr->localLitTable.buckets != envPtr->localLitTable.staticBuckets) {
+	ckfree((char *) envPtr->localLitTable.buckets);
+	envPtr->localLitTable.buckets = envPtr->localLitTable.staticBuckets;
+    }
     if (envPtr->iPtr) {
 	/* 
 	 * We never converted to Bytecode, so free the things we would
@@ -963,7 +1074,11 @@ TclFreeCompileEnv(envPtr)
     if (envPtr->mallocedAuxDataArray) {
 	ckfree((char *) envPtr->auxDataArrayPtr);
     }
-#ifdef TCL_TIP280
+    if (envPtr->extCmdMapPtr) {
+	ReleaseCmdWordData(envPtr->extCmdMapPtr);
+	envPtr->extCmdMapPtr = NULL;
+    }
+
     /*
      * If we used data about invisible continuation lines, then now is the
      * time to release on our hold on it. The lock was set in function
@@ -973,13 +1088,8 @@ TclFreeCompileEnv(envPtr)
     if (envPtr->clLoc) {
 	Tcl_Release (envPtr->clLoc);
     }
-    if (envPtr->extCmdMapPtr) {
-	ReleaseCmdWordData (envPtr->extCmdMapPtr);
-    }
-#endif
 }
 
-#ifdef TCL_TIP280
 /*
  *----------------------------------------------------------------------
  *
@@ -997,35 +1107,67 @@ TclFreeCompileEnv(envPtr)
  *	it is worthwhile to compile at all.
  *
  * Side effects:
- *	None.
+ *	When returning true, appends the known value of the word to the
+ *	unshared Tcl_Obj (*valuePtr), unless valuePtr is NULL.
  *
- * TIP #280
  *----------------------------------------------------------------------
  */
 
 int
-TclWordKnownAtCompileTime (tokenPtr)
-     Tcl_Token* tokenPtr;
+TclWordKnownAtCompileTime(
+    Tcl_Token *tokenPtr,	/* Points to Tcl_Token we should check */
+    Tcl_Obj *valuePtr)		/* If not NULL, points to an unshared Tcl_Obj
+				 * to which we should append the known value
+				 * of the word. */
 {
-    int        i;
-    Tcl_Token* sub;
+    int numComponents = tokenPtr->numComponents;
+    Tcl_Obj *tempPtr = NULL;
 
-    if (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {return 1;};
-    if (tokenPtr->type != TCL_TOKEN_WORD)        {return 0;};
+    if (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
+	if (valuePtr != NULL) {
+	    Tcl_AppendToObj(valuePtr, tokenPtr[1].start, tokenPtr[1].size);
+	}
+	return 1;
+    }
+    if (tokenPtr->type != TCL_TOKEN_WORD) {
+	return 0;
+    }
+    tokenPtr++;
+    if (valuePtr != NULL) {
+	tempPtr = Tcl_NewObj();
+	Tcl_IncrRefCount(tempPtr);
+    }
+    while (numComponents--) {
+	switch (tokenPtr->type) {
+	case TCL_TOKEN_TEXT:
+	    if (tempPtr != NULL) {
+		Tcl_AppendToObj(tempPtr, tokenPtr->start, tokenPtr->size);
+	    }
+	    break;
 
-    /* Check the sub tokens of the word. It is a literal if we find
-     * only BS and TEXT tokens */
+	case TCL_TOKEN_BS:
+	    if (tempPtr != NULL) {
+		char utfBuf[TCL_UTF_MAX];
+		int length = TclParseBackslash(tokenPtr->start,
+			tokenPtr->size, NULL, utfBuf);
+		Tcl_AppendToObj(tempPtr, utfBuf, length);
+	    }
+	    break;
 
-    for (i=0, sub = tokenPtr + 1;
-	 i < tokenPtr->numComponents;
-	 i++, sub ++) {
-      if (sub->type == TCL_TOKEN_TEXT) continue;
-      if (sub->type == TCL_TOKEN_BS)   continue;
-      return 0;
+	default:
+	    if (tempPtr != NULL) {
+		Tcl_DecrRefCount(tempPtr);
+	    }
+	    return 0;
+	}
+	tokenPtr++;
+    }
+    if (valuePtr != NULL) {
+	Tcl_AppendObjToObj(valuePtr, tempPtr);
+	Tcl_DecrRefCount(tempPtr);
     }
     return 1;
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
@@ -1039,55 +1181,44 @@ TclWordKnownAtCompileTime (tokenPtr)
  *	on failure. If TCL_ERROR is returned, then the interpreter's result
  *	contains an error message.
  *
- *	interp->termOffset is set to the offset of the character in the
- *	script just after the last one successfully processed; this will be
- *	the offset of the ']' if (flags & TCL_BRACKET_TERM).
- *
  * Side effects:
  *	Adds instructions to envPtr to evaluate the script at runtime.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclCompileScript(interp, script, numBytes, nested, envPtr)
-    Tcl_Interp *interp;		/* Used for error and status reporting.
-				 * Also serves as context for finding and
-				 * compiling commands.  May not be NULL. */
-    CONST char *script;		/* The source script to compile. */
-    int numBytes;		/* Number of bytes in script. If < 0, the
+void
+TclCompileScript(
+    Tcl_Interp *interp,		/* Used for error and status reporting. Also
+				 * serves as context for finding and compiling
+				 * commands. May not be NULL. */
+    const char *script,		/* The source script to compile. */
+    int numBytes,		/* Number of bytes in script. If < 0, the
 				 * script consists of all bytes up to the
 				 * first null character. */
-    int nested;			/* Non-zero means this is a nested command:
-				 * close bracket ']' should be considered a
-				 * command terminator. If zero, close
-				 * bracket has no special meaning. */
-    CompileEnv *envPtr;		/* Holds resulting instructions. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
 {
     Interp *iPtr = (Interp *) interp;
-    Tcl_Parse parse;
     int lastTopLevelCmdIndex = -1;
     				/* Index of most recent toplevel command in
- 				 * the command location table. Initialized
-				 * to avoid compiler warning. */
+ 				 * the command location table. Initialized to
+ 				 * avoid compiler warning. */
     int startCodeOffset = -1;	/* Offset of first byte of current command's
-                                 * code. Init. to avoid compiler warning. */
+				 * code. Init. to avoid compiler warning. */
     unsigned char *entryCodeNext = envPtr->codeNext;
-    CONST char *p, *next;
+    const char *p, *next;
     Namespace *cmdNsPtr;
     Command *cmdPtr;
     Tcl_Token *tokenPtr;
-    int bytesLeft, isFirstCmd, gotParse, wordIdx, currCmdIndex;
-    int commandLength, objIndex, code;
+    int bytesLeft, isFirstCmd, wordIdx, currCmdIndex;
+    int commandLength, objIndex;
     Tcl_DString ds;
-
-#ifdef TCL_TIP280
     /* TIP #280 */
-    ExtCmdLoc* eclPtr = envPtr->extCmdMapPtr;
-    int* wlines = NULL;
-    int  wlineat, cmdLine;
+    ExtCmdLoc *eclPtr = envPtr->extCmdMapPtr;
+    int *wlines, wlineat, cmdLine;
     int* clNext;
-#endif
+    Tcl_Parse *parsePtr = (Tcl_Parse *)
+	    TclStackAlloc(interp, sizeof(Tcl_Parse));
 
     if (envPtr->iPtr == NULL) {
 	Tcl_Panic("TclCompileScript() called on uninitialized CompileEnv");
@@ -1101,70 +1232,39 @@ TclCompileScript(interp, script, numBytes, nested, envPtr)
     Tcl_ResetResult(interp);
     isFirstCmd = 1;
 
+    if (envPtr->procPtr != NULL) {
+	cmdNsPtr = envPtr->procPtr->cmdPtr->nsPtr;
+    } else {
+	cmdNsPtr = NULL;	/* use current NS */
+    }
+
     /*
-     * Each iteration through the following loop compiles the next
-     * command from the script.
+     * Each iteration through the following loop compiles the next command
+     * from the script.
      */
 
     p = script;
     bytesLeft = numBytes;
-    gotParse = 0;
-#ifdef TCL_TIP280
     cmdLine = envPtr->line;
-    clNext  = envPtr->clNext;
-#endif
-
+    clNext = envPtr->clNext;
     do {
-	if (Tcl_ParseCommand(interp, p, bytesLeft, nested, &parse) != TCL_OK) {
-	    code = TCL_ERROR;
-	    goto error;
-	}
-	gotParse = 1;
-	if (nested) {
+	if (Tcl_ParseCommand(interp, p, bytesLeft, 0, parsePtr) != TCL_OK) {
 	    /*
-	     * This is an unusual situation where the caller has passed us
-	     * a non-zero value for "nested".  How unusual?  Well, this
-	     * procedure, TclCompileScript, is internal to Tcl, so all
-	     * callers should be within Tcl itself.  All but one of those
-	     * callers explicitly pass in (nested = 0).  The exceptional
-	     * caller is TclSetByteCodeFromAny, which will pass in
-	     * (nested = 1) if and only if the flag TCL_BRACKET_TERM
-	     * is set in the evalFlags field of interp.
-	     *
-	     * It appears that the TCL_BRACKET_TERM flag is only ever set
-	     * by Tcl_SubstObj, and it immediately calls Tcl_EvalEx
-	     * which clears the flag before passing the interp along.
-	     * So, I don't think this procedure, TclCompileScript, is
-	     * **ever** called with (nested != 0). 
-	     * (The testsuite indeed doesn't exercise this code. MS)
-	     *
-	     * This means that the branches in this procedure that are
-	     * only active when (nested != 0) are probably never exercised.
-	     * This means that any bugs in them go unnoticed, and any bug
-	     * fixes in them have a semi-theoretical nature.
-	     *
-	     * All that said, the spec for this procedure says it should
-	     * handle the (nested != 0) case, so here's an attempt to fix
-	     * bugs (Tcl Bug 681841) in that case.  Just in case some
-	     * callers eventually come along and expect it to work...
+	     * Compile bytecodes to report the parse error at runtime.
 	     */
 
-	    if (parse.term == (script + numBytes)) {
-		/* 
-		 * The (nested != 0) case is meant to indicate that the
-		 * caller found an open bracket ([) and asked us to
-		 * parse and compile Tcl commands up to the matching
-		 * close bracket (]).  We have to detect and handle
-		 * the case where the close bracket is missing.
-		 */
-
-		Tcl_SetObjResult(interp,
-			Tcl_NewStringObj("missing close-bracket", -1));
-		code = TCL_ERROR;
-		goto error;
-	    }
+	    Tcl_LogCommandInfo(interp, script, parsePtr->commandStart,
+		    /* Drop the command terminator (";","]") if appropriate */
+		    (parsePtr->term ==
+		    parsePtr->commandStart + parsePtr->commandSize - 1)?
+		    parsePtr->commandSize - 1 : parsePtr->commandSize);
+	    TclCompileSyntaxError(interp, envPtr);
+	    break;
 	}
-	if (parse.numWords > 0) {
+	if (parsePtr->numWords > 0) {
+	    int expand = 0;	/* Set if there are dynamic expansions to
+				 * handle */
+
 	    /*
 	     * If not the first command, pop the previous command's result
 	     * and, if we're compiling a top level command, update the last
@@ -1173,195 +1273,294 @@ TclCompileScript(interp, script, numBytes, nested, envPtr)
 
 	    if (!isFirstCmd) {
 		TclEmitOpcode(INST_POP, envPtr);
-		if (!nested) {
-		    envPtr->cmdMapPtr[lastTopLevelCmdIndex].numCodeBytes =
-			   (envPtr->codeNext - envPtr->codeStart)
-			   - startCodeOffset;
-		}
+		envPtr->cmdMapPtr[lastTopLevelCmdIndex].numCodeBytes =
+			(envPtr->codeNext - envPtr->codeStart)
+			- startCodeOffset;
 	    }
 
 	    /*
 	     * Determine the actual length of the command.
 	     */
 
-	    commandLength = parse.commandSize;
-	    if (parse.term == parse.commandStart + commandLength - 1) {
+	    commandLength = parsePtr->commandSize;
+	    if (parsePtr->term == parsePtr->commandStart + commandLength - 1) {
 		/*
-		 * The command terminator character (such as ; or ]) is
-		 * the last character in the parsed command.  Reduce the
-		 * length by one so that the trace message doesn't include
-		 * the terminator character.
+		 * The command terminator character (such as ; or ]) is the
+		 * last character in the parsed command. Reduce the length by
+		 * one so that the trace message doesn't include the
+		 * terminator character.
 		 */
-		
+
 		commandLength -= 1;
 	    }
 
 #ifdef TCL_COMPILE_DEBUG
 	    /*
-             * If tracing, print a line for each top level command compiled.
-             */
+	     * If tracing, print a line for each top level command compiled.
+	     */
 
-	    if ((tclTraceCompile >= 1)
-		    && !nested && (envPtr->procPtr == NULL)) {
+	    if ((tclTraceCompile >= 1) && (envPtr->procPtr == NULL)) {
 		fprintf(stdout, "  Compiling: ");
-		TclPrintSource(stdout, parse.commandStart,
+		TclPrintSource(stdout, parsePtr->commandStart,
 			TclMin(commandLength, 55));
 		fprintf(stdout, "\n");
 	    }
 #endif
+
 	    /*
-	     * Each iteration of the following loop compiles one word
-	     * from the command.
+	     * Check whether expansion has been requested for any of the
+	     * words.
 	     */
-	    
+
+	    for (wordIdx = 0, tokenPtr = parsePtr->tokenPtr;
+		    wordIdx < parsePtr->numWords;
+		    wordIdx++, tokenPtr += (tokenPtr->numComponents + 1)) {
+		if (tokenPtr->type == TCL_TOKEN_EXPAND_WORD) {
+		    expand = 1;
+		    break;
+		}
+	    }
+
 	    envPtr->numCommands++;
 	    currCmdIndex = (envPtr->numCommands - 1);
-	    if (!nested) {
-		lastTopLevelCmdIndex = currCmdIndex;
-	    }
+	    lastTopLevelCmdIndex = currCmdIndex;
 	    startCodeOffset = (envPtr->codeNext - envPtr->codeStart);
 	    EnterCmdStartData(envPtr, currCmdIndex,
-	            (parse.commandStart - envPtr->source), startCodeOffset);
+		    parsePtr->commandStart - envPtr->source, startCodeOffset);
+
+	    /*
+	     * Should only start issuing instructions after the "command has
+	     * started" so that the command range is correct in the bytecode.
+	     */
 
-#ifdef TCL_TIP280
-	    /* TIP #280. Scan the words and compute the extended location
+	    if (expand) {
+		TclEmitOpcode(INST_EXPAND_START, envPtr);
+	    }
+
+	    /*
+	     * TIP #280. Scan the words and compute the extended location
 	     * information. The map first contain full per-word line
 	     * information for use by the compiler. This is later replaced by
 	     * a reduced form which signals non-literal words, stored in
 	     * 'wlines'.
 	     */
 
-	    TclAdvanceLines         (&cmdLine, p, parse.commandStart);
+	    TclAdvanceLines(&cmdLine, p, parsePtr->commandStart);
 	    TclAdvanceContinuations (&cmdLine, &clNext,
-				     parse.commandStart - envPtr->source);
-	    EnterCmdWordData (eclPtr, (parse.commandStart - envPtr->source),
-			      parse.tokenPtr, parse.commandStart,
-			      parse.commandSize, parse.numWords,
-			      cmdLine, clNext, &wlines, envPtr);
+				     parsePtr->commandStart - envPtr->source);
+	    EnterCmdWordData(eclPtr, parsePtr->commandStart - envPtr->source,
+			     parsePtr->tokenPtr, parsePtr->commandStart,
+			     parsePtr->commandSize, parsePtr->numWords, cmdLine,
+			     clNext, &wlines, envPtr);
 	    wlineat = eclPtr->nuloc - 1;
-#endif
 
-	    for (wordIdx = 0, tokenPtr = parse.tokenPtr;
-		    wordIdx < parse.numWords;
-		    wordIdx++, tokenPtr += (tokenPtr->numComponents + 1)) {
-#ifdef TCL_TIP280
-	        envPtr->line   = eclPtr->loc [wlineat].line [wordIdx];
+	    /*
+	     * Each iteration of the following loop compiles one word from the
+	     * command.
+	     */
+
+	    for (wordIdx = 0, tokenPtr = parsePtr->tokenPtr;
+		    wordIdx < parsePtr->numWords; wordIdx++,
+		    tokenPtr += (tokenPtr->numComponents + 1)) {
+
+		envPtr->line = eclPtr->loc[wlineat].line[wordIdx];
 		envPtr->clNext = eclPtr->loc [wlineat].next [wordIdx];
-#endif
-		if (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD) {
+
+		if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
 		    /*
-		     * If this is the first word and the command has a
-		     * compile procedure, let it compile the command.
+		     * The word is not a simple string of characters.
 		     */
 
-		    if (wordIdx == 0) {
-			if (envPtr->procPtr != NULL) {
-			    cmdNsPtr = envPtr->procPtr->cmdPtr->nsPtr;
-			} else {
-			    cmdNsPtr = NULL; /* use current NS */
-			}
+		    TclCompileTokens(interp, tokenPtr+1,
+			    tokenPtr->numComponents, envPtr);
+		    if (tokenPtr->type == TCL_TOKEN_EXPAND_WORD) {
+			TclEmitInstInt4(INST_EXPAND_STKTOP,
+				envPtr->currStackDepth, envPtr);
+		    }
+		    continue;
+		}
+
+		/*
+		 * This is a simple string of literal characters (i.e. we know
+		 * it absolutely and can use it directly). If this is the
+		 * first word and the command has a compile procedure, let it
+		 * compile the command.
+		 */
+
+		if ((wordIdx == 0) && !expand) {
+		    /*
+		     * We copy the string before trying to find the command by
+		     * name. We used to modify the string in place, but this
+		     * is not safe because the name resolution handlers could
+		     * have side effects that rely on the unmodified string.
+		     */
+
+		    Tcl_DStringSetLength(&ds, 0);
+		    Tcl_DStringAppend(&ds, tokenPtr[1].start,tokenPtr[1].size);
+
+		    cmdPtr = (Command *) Tcl_FindCommand(interp,
+			    Tcl_DStringValue(&ds),
+			    (Tcl_Namespace *) cmdNsPtr, /*flags*/ 0);
+
+		    if ((cmdPtr != NULL)
+			    && (cmdPtr->compileProc != NULL)
+			    && !(cmdPtr->flags & CMD_HAS_EXEC_TRACES)
+			    && !(iPtr->flags & DONT_COMPILE_CMDS_INLINE)) {
+			int savedNumCmds = envPtr->numCommands;
+			unsigned savedCodeNext =
+				envPtr->codeNext - envPtr->codeStart;
+			int update = 0, code;
 
 			/*
-			 * We copy the string before trying to find the command
-			 * by name.  We used to modify the string in place, but
-			 * this is not safe because the name resolution
-			 * handlers could have side effects that rely on the
-			 * unmodified string.
+			 * Mark the start of the command; the proper bytecode
+			 * length will be updated later. There is no need to
+			 * do this for the first bytecode in the compile env,
+			 * as the check is done before calling
+			 * TclExecuteByteCode(). Do emit an INST_START_CMD in
+			 * special cases where the first bytecode is in a
+			 * loop, to insure that the corresponding command is
+			 * counted properly. Compilers for commands able to
+			 * produce such a beast (currently 'while 1' only) set
+			 * envPtr->atCmdStart to 0 in order to signal this
+			 * case. [Bug 1752146]
+			 *
+			 * Note that the environment is initialised with
+			 * atCmdStart=1 to avoid emitting ISC for the first
+			 * command.
 			 */
 
-			Tcl_DStringSetLength(&ds, 0);
-			Tcl_DStringAppend(&ds, tokenPtr[1].start,
-				tokenPtr[1].size);
-
-			cmdPtr = (Command *) Tcl_FindCommand(interp,
-				Tcl_DStringValue(&ds),
-			        (Tcl_Namespace *) cmdNsPtr, /*flags*/ 0);
-
-			if ((cmdPtr != NULL)
-			        && (cmdPtr->compileProc != NULL)
-			        && !(cmdPtr->flags & CMD_HAS_EXEC_TRACES)
-			        && !(iPtr->flags & DONT_COMPILE_CMDS_INLINE)) {
-			    int savedNumCmds = envPtr->numCommands;
-			    unsigned int savedCodeNext =
-				    envPtr->codeNext - envPtr->codeStart;
-
-			    code = (*(cmdPtr->compileProc))(interp, &parse,
-			            envPtr);
-			    if (code == TCL_OK) {
-				goto finishCommand;
-			    } else if (code == TCL_OUT_LINE_COMPILE) {
+			if (envPtr->atCmdStart) {
+			    if (savedCodeNext != 0) {
 				/*
-				 * Restore numCommands and codeNext to their correct 
-				 * values, removing any commands compiled before 
-				 * TCL_OUT_LINE_COMPILE [Bugs 705406 and 735055]
+				 * Increase the number of commands being
+				 * started at the current point. Note that
+				 * this depends on the exact layout of the
+				 * INST_START_CMD's operands, so be careful!
 				 */
-				envPtr->numCommands = savedNumCmds;
-				envPtr->codeNext = envPtr->codeStart + savedCodeNext;
-			    } else { /* an error */
+
+				unsigned char *fixPtr = envPtr->codeNext - 4;
+
+				TclStoreInt4AtPtr(TclGetUInt4AtPtr(fixPtr)+1,
+					fixPtr);
+			    }
+			} else {
+			    TclEmitInstInt4(INST_START_CMD, 0, envPtr);
+			    TclEmitInt4(1, envPtr);
+			    update = 1;
+			}
+
+			code = (cmdPtr->compileProc)(interp, parsePtr,
+				cmdPtr, envPtr);
+
+			if (code == TCL_OK) {
+			    if (update) {
 				/*
-				 * There was a compilation error, the last
-				 * command did not get compiled into (*envPtr).
-				 * Decrement the number of commands
-				 * claimed to be in (*envPtr).
+				 * Fix the bytecode length.
 				 */
-				envPtr->numCommands--;
-				goto log;
+
+				unsigned char *fixPtr = envPtr->codeStart
+					+ savedCodeNext + 1;
+				unsigned fixLen = envPtr->codeNext
+					- envPtr->codeStart - savedCodeNext;
+
+				TclStoreInt4AtPtr(fixLen, fixPtr);
 			    }
-			}
+			    goto finishCommand;
+			} else {
+			    if (envPtr->atCmdStart && savedCodeNext != 0) {
+				/*
+				 * Decrease the number of commands being
+				 * started at the current point. Note that
+				 * this depends on the exact layout of the
+				 * INST_START_CMD's operands, so be careful!
+				 */
 
-			/*
-			 * No compile procedure so push the word. If the
-			 * command was found, push a CmdName object to
-			 * reduce runtime lookups.
-			 */
+				unsigned char *fixPtr = envPtr->codeNext - 4;
+
+				TclStoreInt4AtPtr(TclGetUInt4AtPtr(fixPtr)-1,
+					fixPtr);
+			    }
 
-			objIndex = TclRegisterNewLiteral(envPtr,
-				tokenPtr[1].start, tokenPtr[1].size);
-			if (cmdPtr != NULL) {
-			    TclSetCmdNameObj(interp,
-			           envPtr->literalArrayPtr[objIndex].objPtr,
-				   cmdPtr);
+			    /*
+			     * Restore numCommands and codeNext to their
+			     * correct values, removing any commands compiled
+			     * before the failure to produce bytecode got
+			     * reported. [Bugs 705406 and 735055]
+			     */
+
+			    envPtr->numCommands = savedNumCmds;
+			    envPtr->codeNext = envPtr->codeStart+savedCodeNext;
 			}
-		    } else {
-			/* Simple argument word of a command. We reach this if
-			 * and only if the command word was not compiled for
-			 * whatever reason. Register the literal's location
-			 * for use by uplevel, etc. commands, should they
-			 * encounter it unmodified. We care only if the we are
-			 * in a context which already allows absolute
-			 * counting.
+		    }
+
+		    /*
+		     * No compile procedure so push the word. If the command
+		     * was found, push a CmdName object to reduce runtime
+		     * lookups. Avoid sharing this literal among different
+		     * namespaces to reduce shimmering.
+		     */
+
+		    objIndex = TclRegisterNewNSLiteral(envPtr,
+			    tokenPtr[1].start, tokenPtr[1].size);
+		    if (cmdPtr != NULL) {
+			TclSetCmdNameObj(interp,
+			      envPtr->literalArrayPtr[objIndex].objPtr,cmdPtr);
+		    }
+		    if ((wordIdx == 0) && (parsePtr->numWords == 1)) {
+			/*
+			 * Single word script: unshare the command name to
+			 * avoid shimmering between bytecode and cmdName
+			 * representations [Bug 458361]
 			 */
 
-			objIndex = TclRegisterNewLiteral(envPtr,
-				tokenPtr[1].start, tokenPtr[1].size);
-#ifdef TCL_TIP280
-			if (envPtr->clNext) {
-			    TclContinuationsEnterDerived (envPtr->literalArrayPtr[objIndex].objPtr,
-							  tokenPtr[1].start - envPtr->source,
-							  eclPtr->loc [wlineat].next [wordIdx]);
-			}
-#endif
+			TclHideLiteral(interp, envPtr, objIndex);
 		    }
-		    TclEmitPush(objIndex, envPtr);
 		} else {
 		    /*
-		     * The word is not a simple string of characters.
+		     * Simple argument word of a command. We reach this if and
+		     * only if the command word was not compiled for whatever
+		     * reason. Register the literal's location for use by
+		     * uplevel, etc. commands, should they encounter it
+		     * unmodified. We care only if the we are in a context
+		     * which already allows absolute counting.
 		     */
-		    code = TclCompileTokens(interp, tokenPtr+1,
-			    tokenPtr->numComponents, envPtr);
-		    if (code != TCL_OK) {
-			goto log;
+		    objIndex = TclRegisterNewLiteral(envPtr,
+			    tokenPtr[1].start, tokenPtr[1].size);
+
+		    if (envPtr->clNext) {
+			TclContinuationsEnterDerived (envPtr->literalArrayPtr[objIndex].objPtr,
+						      tokenPtr[1].start - envPtr->source,
+						      eclPtr->loc [wlineat].next [wordIdx]);
 		    }
 		}
-	    }
+		TclEmitPush(objIndex, envPtr);
+	    } /* for loop */
 
 	    /*
-	     * Emit an invoke instruction for the command. We skip this
-	     * if a compile procedure was found for the command.
+	     * Emit an invoke instruction for the command. We skip this if a
+	     * compile procedure was found for the command.
 	     */
-	    
-	    if (wordIdx > 0) {
-#ifdef TCL_TIP280
+
+	    if (expand) {
+		/*
+		 * The stack depth during argument expansion can only be
+		 * managed at runtime, as the number of elements in the
+		 * expanded lists is not known at compile time. We adjust here
+		 * the stack depth estimate so that it is correct after the
+		 * command with expanded arguments returns.
+		 *
+		 * The end effect of this command's invocation is that all the
+		 * words of the command are popped from the stack, and the
+		 * result is pushed: the stack top changes by (1-wordIdx).
+		 *
+		 * Note that the estimates are not correct while the command
+		 * is being prepared and run, INST_EXPAND_STKTOP is not
+		 * stack-neutral in general.
+		 */
+
+		TclEmitOpcode(INST_INVOKE_EXPANDED, envPtr);
+		TclAdjustStackDepth((1-wordIdx), envPtr);
+	    } else if (wordIdx > 0) {
 		/*
 		 * Save PC -> command map for the TclArgumentBC* functions.
 		 */
@@ -1369,8 +1568,8 @@ TclCompileScript(interp, script, numBytes, nested, envPtr)
 		int isnew;
 		Tcl_HashEntry* hePtr = Tcl_CreateHashEntry(&eclPtr->litInfo,
 			   (char*) (envPtr->codeNext - envPtr->codeStart), &isnew);
-		Tcl_SetHashValue(hePtr, (char*) wlineat);
-#endif
+		Tcl_SetHashValue(hePtr, INT2PTR(wlineat));
+
 		if (wordIdx <= 255) {
 		    TclEmitInstInt1(INST_INVOKE_STK1, wordIdx, envPtr);
 		} else {
@@ -1383,115 +1582,57 @@ TclCompileScript(interp, script, numBytes, nested, envPtr)
 	     * offsets of the source and code for the command.
 	     */
 
-	    finishCommand:
+	finishCommand:
 	    EnterCmdExtentData(envPtr, currCmdIndex, commandLength,
 		    (envPtr->codeNext-envPtr->codeStart) - startCodeOffset);
 	    isFirstCmd = 0;
 
-#ifdef TCL_TIP280
-	    /* TIP #280: Free full form of per-word line data and insert
-	     * the reduced form now
+	    /*
+	     * TIP #280: Free full form of per-word line data and insert the
+	     * reduced form now
 	     */
-	    ckfree ((char*) eclPtr->loc [wlineat].line);
-	    ckfree ((char*) eclPtr->loc [wlineat].next);
-	    eclPtr->loc [wlineat].line = wlines;
-	    eclPtr->loc [wlineat].next = NULL;
-	    wlines = NULL;
-#endif
-	} /* end if parse.numWords > 0 */
+
+	    ckfree((char *) eclPtr->loc[wlineat].line);
+	    ckfree((char *) eclPtr->loc[wlineat].next);
+	    eclPtr->loc[wlineat].line = wlines;
+	    eclPtr->loc[wlineat].next = NULL;
+	} /* end if parsePtr->numWords > 0 */
 
 	/*
 	 * Advance to the next command in the script.
 	 */
 
-	next = parse.commandStart + parse.commandSize;
-	bytesLeft -= (next - p);
+	next = parsePtr->commandStart + parsePtr->commandSize;
+	bytesLeft -= next - p;
 	p = next;
-#ifdef TCL_TIP280
-	/* TIP #280 : Track lines in the just compiled command */
-	TclAdvanceLines         (&cmdLine, parse.commandStart, p);
+
+	/*
+	 * TIP #280: Track lines in the just compiled command.
+	 */
+
+	TclAdvanceLines(&cmdLine, parsePtr->commandStart, p);
 	TclAdvanceContinuations (&cmdLine, &clNext, p - envPtr->source);
-#endif
-	Tcl_FreeParse(&parse);
-	gotParse = 0;
-	if (nested && (*parse.term == ']')) {
-	    /*
-	     * We get here in the special case where TCL_BRACKET_TERM was
-	     * set in the interpreter and the latest parsed command was
-	     * terminated by the matching close-bracket we were looking for.
-	     * Stop compilation.
-	     */
-	    
-	    break;
-	}
+	Tcl_FreeParse(parsePtr);
     } while (bytesLeft > 0);
 
     /*
      * If the source script yielded no instructions (e.g., if it was empty),
      * push an empty string as the command's result.
+     *
+     * WARNING: push an unshared object! If the script being compiled is a
+     * shared empty string, it will otherwise be self-referential and cause
+     * difficulties with literal management [Bugs 467523, 983660]. We used to
+     * have special code in TclReleaseLiteral to handle this particular
+     * self-reference, but now opt for avoiding its creation altogether.
      */
-    
-    if (envPtr->codeNext == entryCodeNext) {
-	TclEmitPush(TclRegisterLiteral(envPtr, "", 0, /*onHeap*/ 0),
-	        envPtr);
-    }
-    
-    if (nested) {
-	/*
-	 * When (nested != 0) back up 1 character to have 
-	 * iPtr->termOffset indicate the offset to the matching
-	 * close-bracket.
-	 */
-
-	iPtr->termOffset = (p - 1) - script;
-    } else {
-	iPtr->termOffset = (p - script);
-    }
-    Tcl_DStringFree(&ds);
-    return TCL_OK;
-	
-    error:
-    /*
-     * Generate various pieces of error information, such as the line
-     * number where the error occurred and information to add to the
-     * errorInfo variable. Then free resources that had been allocated
-     * to the command.
-     */
-
-    commandLength = parse.commandSize;
-    if (parse.term == parse.commandStart + commandLength - 1) {
-	/*
-	 * The terminator character (such as ; or ]) of the command where
-	 * the error occurred is the last character in the parsed command.
-	 * Reduce the length by one so that the error message doesn't
-	 * include the terminator character.
-	 */
 
-	commandLength -= 1;
-    }
-
- log:
-#ifdef TCL_TIP280
-    /* TIP #280: Free the per-word line data left over from parsing an
-     * erroneous command, if any.
-     */
-    if (wlines) {
-	ckfree ((char*) eclPtr->loc [wlineat].line);
-	ckfree ((char*) eclPtr->loc [wlineat].next);
-	ckfree ((char*) wlines);
-	eclPtr->loc [wlineat].line = NULL;
-	eclPtr->loc [wlineat].next = NULL;
-	wlines = NULL;
+    if (envPtr->codeNext == entryCodeNext) {
+	TclEmitPush(TclAddLiteralObj(envPtr, Tcl_NewObj(), NULL), envPtr);
     }
-#endif
 
-    LogCompilationInfo(interp, script, parse.commandStart, commandLength);
-    if (gotParse) {
-	Tcl_FreeParse(&parse);
-    }
-    iPtr->termOffset = (p - script);
+    envPtr->numSrcBytes = (p - script);
+    TclStackFree(interp, parsePtr);
     Tcl_DStringFree(&ds);
-    return code;
 }
 
 /*
@@ -1500,38 +1641,37 @@ TclCompileScript(interp, script, numBytes, nested, envPtr)
  * TclCompileTokens --
  *
  *	Given an array of tokens parsed from a Tcl command (e.g., the tokens
- *	that make up a word) this procedure emits instructions to evaluate
- *	the tokens and concatenate their values to form a single result
- *	value on the interpreter's runtime evaluation stack.
+ *	that make up a word) this procedure emits instructions to evaluate the
+ *	tokens and concatenate their values to form a single result value on
+ *	the interpreter's runtime evaluation stack.
  *
  * Results:
  *	The return value is a standard Tcl result. If an error occurs, an
  *	error message is left in the interpreter's result.
- *	
+ *
  * Side effects:
- *	Instructions are added to envPtr to push and evaluate the tokens
- *	at runtime.
+ *	Instructions are added to envPtr to push and evaluate the tokens at
+ *	runtime.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclCompileTokens(interp, tokenPtr, count, envPtr)
-    Tcl_Interp *interp;		/* Used for error and status reporting. */
-    Tcl_Token *tokenPtr;	/* Pointer to first in an array of tokens
-				 * to compile. */
-    int count;			/* Number of tokens to consider at tokenPtr.
+void
+TclCompileTokens(
+    Tcl_Interp *interp,		/* Used for error and status reporting. */
+    Tcl_Token *tokenPtr,	/* Pointer to first in an array of tokens to
+				 * compile. */
+    int count,			/* Number of tokens to consider at tokenPtr.
 				 * Must be at least 1. */
-    CompileEnv *envPtr;		/* Holds the resulting instructions. */
+    CompileEnv *envPtr)		/* Holds the resulting instructions. */
 {
     Tcl_DString textBuffer;	/* Holds concatenated chars from adjacent
 				 * TCL_TOKEN_TEXT, TCL_TOKEN_BS tokens. */
     char buffer[TCL_UTF_MAX];
-    CONST char *name, *p;
+    const char *name, *p;
     int numObjsToConcat, nameBytes, localVarName, localVar;
-    int length, i, code;
+    int length, i;
     unsigned char *entryCodeNext = envPtr->codeNext;
-#ifdef TCL_TIP280
 #define NUM_STATIC_POS 20
     int isLiteral, maxNumCL, numCL;
     int* clPosition = NULL;
@@ -1544,7 +1684,7 @@ TclCompileTokens(interp, tokenPtr, count, envPtr)
      * any. The table is extended if needed.
      *
      * Note: Different to the equivalent code in function
-     * 'EvalTokensStandard()' (see file "tclBasic.c") we do not seem to need
+     * 'TclSubstTokens()' (see file "tclParse.c") we do not seem to need
      * the 'adjust' variable. We also do not seem to need code which merges
      * continuation line information of multiple words which concat'd at
      * runtime. Either that or I have not managed to find a test case for
@@ -1567,186 +1707,166 @@ TclCompileTokens(interp, tokenPtr, count, envPtr)
 	maxNumCL   = NUM_STATIC_POS;
 	clPosition = (int*) ckalloc (maxNumCL*sizeof(int));
     }
-#endif
 
     Tcl_DStringInit(&textBuffer);
     numObjsToConcat = 0;
     for ( ;  count > 0;  count--, tokenPtr++) {
 	switch (tokenPtr->type) {
-	    case TCL_TOKEN_TEXT:
-		Tcl_DStringAppend(&textBuffer, tokenPtr->start,
-			tokenPtr->size);
-		break;
+	case TCL_TOKEN_TEXT:
+	    Tcl_DStringAppend(&textBuffer, tokenPtr->start, tokenPtr->size);
+	    break;
 
-	    case TCL_TOKEN_BS:
-		length = TclParseBackslash(tokenPtr->start, tokenPtr->size,
-			(int *) NULL, buffer);
-		Tcl_DStringAppend(&textBuffer, buffer, length);
+	case TCL_TOKEN_BS:
+	    length = TclParseBackslash(tokenPtr->start, tokenPtr->size,
+		    NULL, buffer);
+	    Tcl_DStringAppend(&textBuffer, buffer, length);
 
-#ifdef TCL_TIP280
-		/*
-		 * If the backslash sequence we found is in a literal, and
-		 * represented a continuation line, we compute and store its
-		 * location (as char offset to the beginning of the _result_
-		 * script). We may have to extend the table of locations.
-		 *
-		 * Note that the continuation line information is relevant
-		 * even if the word we are processing is not a literal, as it
-		 * can affect nested commands. See the branch for
-		 * TCL_TOKEN_COMMAND below, where the adjustment we are
-		 * tracking here is taken into account. The good thing is that
-		 * we do not need a table of everything, just the number of
-		 * lines we have to add as correction.
-		 */
+	    /*
+	     * If the backslash sequence we found is in a literal, and
+	     * represented a continuation line, we compute and store its
+	     * location (as char offset to the beginning of the _result_
+	     * script). We may have to extend the table of locations.
+	     *
+	     * Note that the continuation line information is relevant even if
+	     * the word we are processing is not a literal, as it can affect
+	     * nested commands. See the branch for TCL_TOKEN_COMMAND below,
+	     * where the adjustment we are tracking here is taken into
+	     * account. The good thing is that we do not need a table of
+	     * everything, just the number of lines we have to add as
+	     * correction.
+	     */
 
-		if ((length == 1) && (buffer[0] == ' ') &&
-		    (tokenPtr->start[1] == '\n')) {
-		    if (isLiteral) {
-			int clPos = Tcl_DStringLength (&textBuffer);
+	    if ((length == 1) && (buffer[0] == ' ') &&
+		(tokenPtr->start[1] == '\n')) {
+		if (isLiteral) {
+		    int clPos = Tcl_DStringLength (&textBuffer);
 
-			if (numCL >= maxNumCL) {
-			    maxNumCL *= 2;
-			    clPosition = (int*) ckrealloc ((char*)clPosition,
-							   maxNumCL*sizeof(int));
-			}
-			clPosition[numCL] = clPos;
-			numCL ++;
+		    if (numCL >= maxNumCL) {
+			maxNumCL *= 2;
+			clPosition = (int*) ckrealloc ((char*)clPosition,
+						       maxNumCL*sizeof(int));
 		    }
+		    clPosition[numCL] = clPos;
+		    numCL ++;
 		}
-#endif
-		break;
+	    }
+	    break;
 
-	    case TCL_TOKEN_COMMAND:
-		/*
-		 * Push any accumulated chars appearing before the command.
-		 */
-		
-		if (Tcl_DStringLength(&textBuffer) > 0) {
-		    int literal;
-		    
-		    literal = TclRegisterLiteral(envPtr,
-			    Tcl_DStringValue(&textBuffer),
-			    Tcl_DStringLength(&textBuffer), /*onHeap*/ 0);
-		    TclEmitPush(literal, envPtr);
-		    numObjsToConcat++;
-		    Tcl_DStringFree(&textBuffer);
-#ifdef TCL_TIP280
-		    if (numCL) {
-			TclContinuationsEnter(envPtr->literalArrayPtr[literal].objPtr,
-					      numCL, clPosition);
-		    }
-		    numCL = 0;
-#endif
-		}
-		
-		code = TclCompileScript(interp, tokenPtr->start+1,
-			tokenPtr->size-2, /*nested*/ 0,	envPtr);
-		if (code != TCL_OK) {
-		    goto error;
-		}
+	case TCL_TOKEN_COMMAND:
+	    /*
+	     * Push any accumulated chars appearing before the command.
+	     */
+
+	    if (Tcl_DStringLength(&textBuffer) > 0) {
+		int literal = TclRegisterNewLiteral(envPtr,
+			Tcl_DStringValue(&textBuffer),
+			Tcl_DStringLength(&textBuffer));
+
+		TclEmitPush(literal, envPtr);
 		numObjsToConcat++;
-		break;
+		Tcl_DStringFree(&textBuffer);
 
-	    case TCL_TOKEN_VARIABLE:
-		/*
-		 * Push any accumulated chars appearing before the $<var>.
-		 */
-		
-		if (Tcl_DStringLength(&textBuffer) > 0) {
-		    int literal;
-		    
-		    literal = TclRegisterLiteral(envPtr,
-			    Tcl_DStringValue(&textBuffer),
-			    Tcl_DStringLength(&textBuffer), /*onHeap*/ 0);
-		    TclEmitPush(literal, envPtr);
-		    numObjsToConcat++;
-		    Tcl_DStringFree(&textBuffer);
+		if (numCL) {
+		    TclContinuationsEnter(envPtr->literalArrayPtr[literal].objPtr,
+					  numCL, clPosition);
 		}
-		
-		/*
-		 * Determine how the variable name should be handled: if it contains 
-		 * any namespace qualifiers it is not a local variable (localVarName=-1);
-		 * if it looks like an array element and the token has a single component, 
-		 * it should not be created here [Bug 569438] (localVarName=0); otherwise, 
-		 * the local variable can safely be created (localVarName=1).
-		 */
-		
-		name = tokenPtr[1].start;
-		nameBytes = tokenPtr[1].size;
-		localVarName = -1;
-		if (envPtr->procPtr != NULL) {
-		    localVarName = 1;
-		    for (i = 0, p = name;  i < nameBytes;  i++, p++) {
-			if ((*p == ':') && (i < (nameBytes-1))
-			        && (*(p+1) == ':')) {
-			    localVarName = -1;
-			    break;
-			} else if ((*p == '(')
-			        && (tokenPtr->numComponents == 1) 
-				&& (*(name + nameBytes - 1) == ')')) {
-			    localVarName = 0;
-			    break;
-			}
+		numCL = 0;
+	    }
+
+	    TclCompileScript(interp, tokenPtr->start+1,
+		    tokenPtr->size-2, envPtr);
+	    numObjsToConcat++;
+	    break;
+
+	case TCL_TOKEN_VARIABLE:
+	    /*
+	     * Push any accumulated chars appearing before the $<var>.
+	     */
+
+	    if (Tcl_DStringLength(&textBuffer) > 0) {
+		int literal;
+
+		literal = TclRegisterNewLiteral(envPtr,
+			Tcl_DStringValue(&textBuffer),
+			Tcl_DStringLength(&textBuffer));
+		TclEmitPush(literal, envPtr);
+		numObjsToConcat++;
+		Tcl_DStringFree(&textBuffer);
+	    }
+
+	    /*
+	     * Determine how the variable name should be handled: if it
+	     * contains any namespace qualifiers it is not a local variable
+	     * (localVarName=-1); if it looks like an array element and the
+	     * token has a single component, it should not be created here
+	     * [Bug 569438] (localVarName=0); otherwise, the local variable
+	     * can safely be created (localVarName=1).
+	     */
+
+	    name = tokenPtr[1].start;
+	    nameBytes = tokenPtr[1].size;
+	    localVarName = -1;
+	    if (envPtr->procPtr != NULL) {
+		localVarName = 1;
+		for (i = 0, p = name;  i < nameBytes;  i++, p++) {
+		    if ((*p == ':') && (i < nameBytes-1) && (*(p+1) == ':')) {
+			localVarName = -1;
+			break;
+		    } else if ((*p == '(')
+			    && (tokenPtr->numComponents == 1)
+			    && (*(name + nameBytes - 1) == ')')) {
+			localVarName = 0;
+			break;
 		    }
 		}
+	    }
 
-		/*
-		 * Either push the variable's name, or find its index in
-		 * the array of local variables in a procedure frame. 
-		 */
+	    /*
+	     * Either push the variable's name, or find its index in the array
+	     * of local variables in a procedure frame.
+	     */
 
-		localVar = -1;
-		if (localVarName != -1) {
-		    localVar = TclFindCompiledLocal(name, nameBytes, 
-			        localVarName, /*flags*/ 0, envPtr->procPtr);
-		}
+	    localVar = -1;
+	    if (localVarName != -1) {
+		localVar = TclFindCompiledLocal(name, nameBytes, localVarName,
+			envPtr->procPtr);
+	    }
+	    if (localVar < 0) {
+		TclEmitPush(TclRegisterNewLiteral(envPtr, name, nameBytes),
+			envPtr);
+	    }
+
+	    /*
+	     * Emit instructions to load the variable.
+	     */
+
+	    if (tokenPtr->numComponents == 1) {
 		if (localVar < 0) {
-		    TclEmitPush(TclRegisterNewLiteral(envPtr, name, nameBytes),
-			    envPtr); 
+		    TclEmitOpcode(INST_LOAD_SCALAR_STK, envPtr);
+		} else if (localVar <= 255) {
+		    TclEmitInstInt1(INST_LOAD_SCALAR1, localVar, envPtr);
+		} else {
+		    TclEmitInstInt4(INST_LOAD_SCALAR4, localVar, envPtr);
 		}
-
-		/*
-		 * Emit instructions to load the variable.
-		 */
-		
-		if (tokenPtr->numComponents == 1) {
-		    if (localVar < 0) {
-			TclEmitOpcode(INST_LOAD_SCALAR_STK, envPtr);
-		    } else if (localVar <= 255) {
-			TclEmitInstInt1(INST_LOAD_SCALAR1, localVar,
-			        envPtr);
-		    } else {
-			TclEmitInstInt4(INST_LOAD_SCALAR4, localVar,
-				envPtr);
-		    }
+	    } else {
+		TclCompileTokens(interp, tokenPtr+2,
+			tokenPtr->numComponents-1, envPtr);
+		if (localVar < 0) {
+		    TclEmitOpcode(INST_LOAD_ARRAY_STK, envPtr);
+		} else if (localVar <= 255) {
+		    TclEmitInstInt1(INST_LOAD_ARRAY1, localVar, envPtr);
 		} else {
-		    code = TclCompileTokens(interp, tokenPtr+2,
-			    tokenPtr->numComponents-1, envPtr);
-		    if (code != TCL_OK) {
-			char errorBuffer[150];
-			sprintf(errorBuffer,
-			        "\n    (parsing index for array \"%.*s\")",
-				((nameBytes > 100)? 100 : nameBytes), name);
-			Tcl_AddObjErrorInfo(interp, errorBuffer, -1);
-			goto error;
-		    }
-		    if (localVar < 0) {
-			TclEmitOpcode(INST_LOAD_ARRAY_STK, envPtr);
-		    } else if (localVar <= 255) {
-			TclEmitInstInt1(INST_LOAD_ARRAY1, localVar,
-			        envPtr);
-		    } else {
-			TclEmitInstInt4(INST_LOAD_ARRAY4, localVar,
-			        envPtr);
-		    }
+		    TclEmitInstInt4(INST_LOAD_ARRAY4, localVar, envPtr);
 		}
-		numObjsToConcat++;
-		count -= tokenPtr->numComponents;
-		tokenPtr += tokenPtr->numComponents;
-		break;
+	    }
+	    numObjsToConcat++;
+	    count -= tokenPtr->numComponents;
+	    tokenPtr += tokenPtr->numComponents;
+	    break;
 
-	    default:
-		panic("Unexpected token type in TclCompileTokens");
+	default:
+	    Tcl_Panic("Unexpected token type in TclCompileTokens: %d; %.*s",
+		    tokenPtr->type, tokenPtr->size, tokenPtr->start);
 	}
     }
 
@@ -1757,18 +1877,16 @@ TclCompileTokens(interp, tokenPtr, count, envPtr)
     if (Tcl_DStringLength(&textBuffer) > 0) {
 	int literal;
 
-	literal = TclRegisterLiteral(envPtr, Tcl_DStringValue(&textBuffer),
-	        Tcl_DStringLength(&textBuffer), /*onHeap*/ 0);
+	literal = TclRegisterNewLiteral(envPtr, Tcl_DStringValue(&textBuffer),
+		Tcl_DStringLength(&textBuffer));
 	TclEmitPush(literal, envPtr);
 	numObjsToConcat++;
 
-#ifdef TCL_TIP280
 	if (numCL) {
 	    TclContinuationsEnter(envPtr->literalArrayPtr[literal].objPtr,
 				  numCL, clPosition);
 	}
 	numCL = 0;
-#endif
     }
 
     /*
@@ -1786,16 +1904,12 @@ TclCompileTokens(interp, tokenPtr, count, envPtr)
     /*
      * If the tokens yielded no instructions, push an empty string.
      */
-    
+
     if (envPtr->codeNext == entryCodeNext) {
-	TclEmitPush(TclRegisterLiteral(envPtr, "", 0, /*onHeap*/ 0),
-	        envPtr);
+	TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
     }
-    code = TCL_OK;
-
-    error:
     Tcl_DStringFree(&textBuffer);
-#ifdef TCL_TIP280
+
     /*
      * Release the temp table we used to collect the locations of
      * continuation lines, if any.
@@ -1804,8 +1918,6 @@ TclCompileTokens(interp, tokenPtr, count, envPtr)
     if (maxNumCL) {
 	ckfree ((char*) clPosition);
     }
-#endif
-    return code;
 }
 
 /*
@@ -1816,53 +1928,45 @@ TclCompileTokens(interp, tokenPtr, count, envPtr)
  *	Given an array of parse tokens for a word containing one or more Tcl
  *	commands, emit inline instructions to execute them. This procedure
  *	differs from TclCompileTokens in that a simple word such as a loop
- *	body enclosed in braces is not just pushed as a string, but is
- *	itself parsed into tokens and compiled.
+ *	body enclosed in braces is not just pushed as a string, but is itself
+ *	parsed into tokens and compiled.
  *
  * Results:
  *	The return value is a standard Tcl result. If an error occurs, an
  *	error message is left in the interpreter's result.
- *	
+ *
  * Side effects:
  *	Instructions are added to envPtr to execute the tokens at runtime.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclCompileCmdWord(interp, tokenPtr, count, envPtr)
-    Tcl_Interp *interp;		/* Used for error and status reporting. */
-    Tcl_Token *tokenPtr;	/* Pointer to first in an array of tokens
-				 * for a command word to compile inline. */
-    int count;			/* Number of tokens to consider at tokenPtr.
+void
+TclCompileCmdWord(
+    Tcl_Interp *interp,		/* Used for error and status reporting. */
+    Tcl_Token *tokenPtr,	/* Pointer to first in an array of tokens for
+				 * a command word to compile inline. */
+    int count,			/* Number of tokens to consider at tokenPtr.
 				 * Must be at least 1. */
-    CompileEnv *envPtr;		/* Holds the resulting instructions. */
+    CompileEnv *envPtr)		/* Holds the resulting instructions. */
 {
-    int code;
-
-    /*
-     * Handle the common case: if there is a single text token, compile it
-     * into an inline sequence of instructions.
-     */
-    
     if ((count == 1) && (tokenPtr->type == TCL_TOKEN_TEXT)) {
-	code = TclCompileScript(interp, tokenPtr->start, tokenPtr->size,
-	        /*nested*/ 0, envPtr);
-	return code;
-    }
+	/*
+	 * Handle the common case: if there is a single text token, compile it
+	 * into an inline sequence of instructions.
+	 */
 
-    /*
-     * Multiple tokens or the single token involves substitutions. Emit
-     * instructions to invoke the eval command procedure at runtime on the
-     * result of evaluating the tokens.
-     */
+	TclCompileScript(interp, tokenPtr->start, tokenPtr->size, envPtr);
+    } else {
+	/*
+	 * Multiple tokens or the single token involves substitutions. Emit
+	 * instructions to invoke the eval command procedure at runtime on the
+	 * result of evaluating the tokens.
+	 */
 
-    code = TclCompileTokens(interp, tokenPtr, count, envPtr);
-    if (code != TCL_OK) {
-	return code;
+	TclCompileTokens(interp, tokenPtr, count, envPtr);
+	TclEmitOpcode(INST_EVAL_STK, envPtr);
     }
-    TclEmitOpcode(INST_EVAL_STK, envPtr);
-    return TCL_OK;
 }
 
 /*
@@ -1879,42 +1983,37 @@ TclCompileCmdWord(interp, tokenPtr, count, envPtr)
  * Results:
  *	The return value is a standard Tcl result. If an error occurs, an
  *	error message is left in the interpreter's result.
- *	
+ *
  * Side effects:
  *	Instructions are added to envPtr to execute the expression.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclCompileExprWords(interp, tokenPtr, numWords, envPtr)
-    Tcl_Interp *interp;		/* Used for error and status reporting. */
-    Tcl_Token *tokenPtr;	/* Points to first in an array of word
-				 * tokens tokens for the expression to
-				 * compile inline. */
-    int numWords;		/* Number of word tokens starting at
-				 * tokenPtr. Must be at least 1. Each word
-				 * token contains one or more subtokens. */
-    CompileEnv *envPtr;		/* Holds the resulting instructions. */
+void
+TclCompileExprWords(
+    Tcl_Interp *interp,		/* Used for error and status reporting. */
+    Tcl_Token *tokenPtr,	/* Points to first in an array of word tokens
+				 * tokens for the expression to compile
+				 * inline. */
+    int numWords,		/* Number of word tokens starting at tokenPtr.
+				 * Must be at least 1. Each word token
+				 * contains one or more subtokens. */
+    CompileEnv *envPtr)		/* Holds the resulting instructions. */
 {
     Tcl_Token *wordPtr;
-    int numBytes, i, code;
-    CONST char *script;
-
-    code = TCL_OK;
+    int i, concatItems;
 
     /*
-     * If the expression is a single word that doesn't require
-     * substitutions, just compile its string into inline instructions.
+     * If the expression is a single word that doesn't require substitutions,
+     * just compile its string into inline instructions.
      */
 
     if ((numWords == 1) && (tokenPtr->type == TCL_TOKEN_SIMPLE_WORD)) {
-	script = tokenPtr[1].start;
-	numBytes = tokenPtr[1].size;
-	code = TclCompileExpr(interp, script, numBytes, envPtr);
-	return code;
+	TclCompileExpr(interp, tokenPtr[1].start, tokenPtr[1].size, envPtr, 1);
+	return;
     }
-   
+
     /*
      * Emit code to call the expr command proc at runtime. Concatenate the
      * (already substituted once) expr tokens with a space between each.
@@ -1922,30 +2021,68 @@ TclCompileExprWords(interp, tokenPtr, numWords, envPtr)
 
     wordPtr = tokenPtr;
     for (i = 0;  i < numWords;  i++) {
-	code = TclCompileTokens(interp, wordPtr+1, wordPtr->numComponents,
-                envPtr);
-	if (code != TCL_OK) {
-	    break;
-	}
+	TclCompileTokens(interp, wordPtr+1, wordPtr->numComponents, envPtr);
 	if (i < (numWords - 1)) {
-	    TclEmitPush(TclRegisterLiteral(envPtr, " ", 1, /*onHeap*/ 0),
-	            envPtr);
+	    TclEmitPush(TclRegisterNewLiteral(envPtr, " ", 1), envPtr);
 	}
 	wordPtr += (wordPtr->numComponents + 1);
     }
-    if (code == TCL_OK) {
-	int concatItems = 2*numWords - 1;
-	while (concatItems > 255) {
-	    TclEmitInstInt1(INST_CONCAT1, 255, envPtr);
-	    concatItems -= 254;
-	}
-	if (concatItems > 1) {
-	    TclEmitInstInt1(INST_CONCAT1, concatItems, envPtr);
-	}
-	TclEmitOpcode(INST_EXPR_STK, envPtr);
+    concatItems = 2*numWords - 1;
+    while (concatItems > 255) {
+	TclEmitInstInt1(INST_CONCAT1, 255, envPtr);
+	concatItems -= 254;
+    }
+    if (concatItems > 1) {
+	TclEmitInstInt1(INST_CONCAT1, concatItems, envPtr);
     }
+    TclEmitOpcode(INST_EXPR_STK, envPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCompileNoOp --
+ *
+ *	Function called to compile no-op's
+ *
+ * Results:
+ *	The return value is TCL_OK, indicating successful compilation.
+ *
+ * Side effects:
+ *	Instructions are added to envPtr to execute a no-op at runtime. No
+ *      result is pushed onto the stack: the compiler has to take care of this
+ *      itself if the last compiled command is a NoOp.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    return code;
+int
+TclCompileNoOp(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
+				 * created by Tcl_ParseCommand. */
+    Command *cmdPtr,		/* Points to defintion of command being
+				 * compiled. */
+    CompileEnv *envPtr)		/* Holds resulting instructions. */
+{
+    Tcl_Token *tokenPtr;
+    int i;
+    int savedStackDepth = envPtr->currStackDepth;
+
+    tokenPtr = parsePtr->tokenPtr;
+    for(i = 1; i < parsePtr->numWords; i++) {
+	tokenPtr = tokenPtr + tokenPtr->numComponents + 1;
+	envPtr->currStackDepth = savedStackDepth;
+
+	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
+	    TclCompileTokens(interp, tokenPtr+1, tokenPtr->numComponents,
+		    envPtr);
+	    TclEmitOpcode(INST_POP, envPtr);
+	}
+    }
+    envPtr->currStackDepth = savedStackDepth;
+    TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr);
+    return TCL_OK;
 }
 
 /*
@@ -1954,10 +2091,10 @@ TclCompileExprWords(interp, tokenPtr, numWords, envPtr)
  * TclInitByteCodeObj --
  *
  *	Create a ByteCode structure and initialize it from a CompileEnv
- *	compilation environment structure. The ByteCode structure is
- *	smaller and contains just that information needed to execute
- *	the bytecode instructions resulting from compiling a Tcl script.
- *	The resulting structure is placed in the specified object.
+ *	compilation environment structure. The ByteCode structure is smaller
+ *	and contains just that information needed to execute the bytecode
+ *	instructions resulting from compiling a Tcl script. The resulting
+ *	structure is placed in the specified object.
  *
  * Results:
  *	A newly constructed ByteCode object is stored in the internal
@@ -1965,21 +2102,21 @@ TclCompileExprWords(interp, tokenPtr, numWords, envPtr)
  *
  * Side effects:
  *	A single heap object is allocated to hold the new ByteCode structure
- *	and its code, object, command location, and aux data arrays. Note
- *	that "ownership" (i.e., the pointers to) the Tcl objects and aux
- *	data items will be handed over to the new ByteCode structure from
- *	the CompileEnv structure.
+ *	and its code, object, command location, and aux data arrays. Note that
+ *	"ownership" (i.e., the pointers to) the Tcl objects and aux data items
+ *	will be handed over to the new ByteCode structure from the CompileEnv
+ *	structure.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclInitByteCodeObj(objPtr, envPtr)
-    Tcl_Obj *objPtr;		 /* Points object that should be
-				  * initialized, and whose string rep
-				  * contains the source code. */
-    register CompileEnv *envPtr; /* Points to the CompileEnv structure from
-				  * which to create a ByteCode structure. */
+TclInitByteCodeObj(
+    Tcl_Obj *objPtr,		/* Points object that should be initialized,
+				 * and whose string rep contains the source
+				 * code. */
+    register CompileEnv *envPtr)/* Points to the CompileEnv structure from
+				 * which to create a ByteCode structure. */
 {
     register ByteCode *codePtr;
     size_t codeBytes, objArrayBytes, exceptArrayBytes, cmdLocBytes;
@@ -1990,10 +2127,7 @@ TclInitByteCodeObj(objPtr, envPtr)
 #endif
     int numLitObjects = envPtr->literalArrayNext;
     Namespace *namespacePtr;
-    int i;
-#ifdef TCL_TIP280
-    int new;
-#endif
+    int i, isNew;
     Interp *iPtr;
 
     if (envPtr->iPtr == NULL) {
@@ -2007,24 +2141,24 @@ TclInitByteCodeObj(objPtr, envPtr)
     exceptArrayBytes = (envPtr->exceptArrayNext * sizeof(ExceptionRange));
     auxDataArrayBytes = (envPtr->auxDataArrayNext * sizeof(AuxData));
     cmdLocBytes = GetCmdLocEncodingSize(envPtr);
-    
+
     /*
      * Compute the total number of bytes needed for this bytecode.
      */
 
     structureSize = sizeof(ByteCode);
-    structureSize += TCL_ALIGN(codeBytes);        /* align object array */
-    structureSize += TCL_ALIGN(objArrayBytes);    /* align exc range arr */
+    structureSize += TCL_ALIGN(codeBytes);	  /* align object array */
+    structureSize += TCL_ALIGN(objArrayBytes);	  /* align exc range arr */
     structureSize += TCL_ALIGN(exceptArrayBytes); /* align AuxData array */
     structureSize += auxDataArrayBytes;
     structureSize += cmdLocBytes;
 
     if (envPtr->iPtr->varFramePtr != NULL) {
-        namespacePtr = envPtr->iPtr->varFramePtr->nsPtr;
+	namespacePtr = envPtr->iPtr->varFramePtr->nsPtr;
     } else {
-        namespacePtr = envPtr->iPtr->globalNsPtr;
+	namespacePtr = envPtr->iPtr->globalNsPtr;
     }
-    
+
     p = (unsigned char *) ckalloc((size_t) structureSize);
     codePtr = (ByteCode *) p;
     codePtr->interpHandle = TclHandlePreserve(iPtr->handle);
@@ -2032,7 +2166,11 @@ TclInitByteCodeObj(objPtr, envPtr)
     codePtr->nsPtr = namespacePtr;
     codePtr->nsEpoch = namespacePtr->resolverEpoch;
     codePtr->refCount = 1;
-    codePtr->flags = 0;
+    if (namespacePtr->compiledVarResProc || iPtr->resolverPtr) {
+	codePtr->flags = TCL_BYTECODE_RESOLVE_VARS;
+    } else {
+	codePtr->flags = 0;
+    }
     codePtr->source = envPtr->source;
     codePtr->procPtr = envPtr->procPtr;
 
@@ -2048,28 +2186,26 @@ TclInitByteCodeObj(objPtr, envPtr)
 
     p += sizeof(ByteCode);
     codePtr->codeStart = p;
-    memcpy((VOID *) p, (VOID *) envPtr->codeStart, (size_t) codeBytes);
-    
-    p += TCL_ALIGN(codeBytes);	      /* align object array */
+    memcpy(p, envPtr->codeStart, (size_t) codeBytes);
+
+    p += TCL_ALIGN(codeBytes);		/* align object array */
     codePtr->objArrayPtr = (Tcl_Obj **) p;
     for (i = 0;  i < numLitObjects;  i++) {
 	codePtr->objArrayPtr[i] = envPtr->literalArrayPtr[i].objPtr;
     }
 
-    p += TCL_ALIGN(objArrayBytes);    /* align exception range array */
+    p += TCL_ALIGN(objArrayBytes);	/* align exception range array */
     if (exceptArrayBytes > 0) {
 	codePtr->exceptArrayPtr = (ExceptionRange *) p;
-	memcpy((VOID *) p, (VOID *) envPtr->exceptArrayPtr,
-	        (size_t) exceptArrayBytes);
+	memcpy(p, envPtr->exceptArrayPtr, (size_t) exceptArrayBytes);
     } else {
 	codePtr->exceptArrayPtr = NULL;
     }
-    
-    p += TCL_ALIGN(exceptArrayBytes); /* align AuxData array */
+
+    p += TCL_ALIGN(exceptArrayBytes);	/* align AuxData array */
     if (auxDataArrayBytes > 0) {
 	codePtr->auxDataArrayPtr = (AuxData *) p;
-	memcpy((VOID *) p, (VOID *) envPtr->auxDataArrayPtr,
-	        (size_t) auxDataArrayBytes);
+	memcpy(p, envPtr->auxDataArrayPtr, (size_t) auxDataArrayBytes);
     } else {
 	codePtr->auxDataArrayPtr = NULL;
     }
@@ -2079,11 +2215,11 @@ TclInitByteCodeObj(objPtr, envPtr)
     EncodeCmdLocMap(envPtr, codePtr, (unsigned char *) p);
 #else
     nextPtr = EncodeCmdLocMap(envPtr, codePtr, (unsigned char *) p);
-    if (((size_t)(nextPtr - p)) != cmdLocBytes) {	
-	panic("TclInitByteCodeObj: encoded cmd location bytes %ld != expected size %ld\n", (nextPtr - p), cmdLocBytes);
+    if (((size_t)(nextPtr - p)) != cmdLocBytes) {
+	Tcl_Panic("TclInitByteCodeObj: encoded cmd location bytes %d != expected size %d", (nextPtr - p), cmdLocBytes);
     }
 #endif
-    
+
     /*
      * Record various compilation-related statistics about the new ByteCode
      * structure. Don't include overhead for statistics-related fields.
@@ -2093,118 +2229,32 @@ TclInitByteCodeObj(objPtr, envPtr)
     codePtr->structureSize = structureSize
 	    - (sizeof(size_t) + sizeof(Tcl_Time));
     Tcl_GetTime(&(codePtr->createTime));
-    
+
     RecordByteCodeStats(codePtr);
 #endif /* TCL_COMPILE_STATS */
-    
+
     /*
-     * Free the old internal rep then convert the object to a
-     * bytecode object by making its internal rep point to the just
-     * compiled ByteCode.
+     * Free the old internal rep then convert the object to a bytecode object
+     * by making its internal rep point to the just compiled ByteCode.
      */
-	    
-    if ((objPtr->typePtr != NULL) &&
-	    (objPtr->typePtr->freeIntRepProc != NULL)) {
-	(*objPtr->typePtr->freeIntRepProc)(objPtr);
-    }
-    objPtr->internalRep.otherValuePtr = (VOID *) codePtr;
+
+    TclFreeIntRep(objPtr);
+    objPtr->internalRep.twoPtrValue.ptr1 = (void *) codePtr;
     objPtr->typePtr = &tclByteCodeType;
 
-#ifdef TCL_TIP280
-    /* TIP #280. Associate the extended per-word line information with the
+    /*
+     * TIP #280. Associate the extended per-word line information with the
      * byte code object (internal rep), for use with the bc compiler.
      */
 
-    Tcl_SetHashValue (Tcl_CreateHashEntry (iPtr->lineBCPtr, (char*) codePtr, &new),
-		      envPtr->extCmdMapPtr);
+    Tcl_SetHashValue(Tcl_CreateHashEntry(iPtr->lineBCPtr, (char *) codePtr,
+	    &isNew), envPtr->extCmdMapPtr);
     envPtr->extCmdMapPtr = NULL;
-#endif
 
     /* We've used up the CompileEnv.  Mark as uninitialized. */
     envPtr->iPtr = NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * LogCompilationInfo --
- *
- *	This procedure is invoked after an error occurs during compilation.
- *	It adds information to the "errorInfo" variable to describe the
- *	command that was being compiled when the error occurred.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Information about the command is added to errorInfo and the
- *	line number stored internally in the interpreter is set.  If this
- *	is the first call to this procedure or Tcl_AddObjErrorInfo since
- *	an error occurred, then old information in errorInfo is
- *	deleted.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-LogCompilationInfo(interp, script, command, length)
-    Tcl_Interp *interp;		/* Interpreter in which to log the
-				 * information. */
-    CONST char *script;		/* First character in script containing
-				 * command (must be <= command). */
-    CONST char *command;	/* First character in command that
-				 * generated the error. */
-    int length;			/* Number of bytes in command (-1 means
-				 * use all bytes up to first null byte). */
-{
-    char buffer[200];
-    register CONST char *p;
-    char *ellipsis = "";
-    Interp *iPtr = (Interp *) interp;
-
-    if (iPtr->flags & ERR_ALREADY_LOGGED) {
-	/*
-	 * Someone else has already logged error information for this
-	 * command; we shouldn't add anything more.
-	 */
-
-	return;
-    }
-
-    /*
-     * Compute the line number where the error occurred.
-     */
-
-    iPtr->errorLine = 1;
-    for (p = script; p != command; p++) {
-	if (*p == '\n') {
-	    iPtr->errorLine++;
-	}
-    }
 
-    /*
-     * Create an error message to add to errorInfo, including up to a
-     * maximum number of characters of the command.
-     */
-
-    if (length < 0) {
-	length = strlen(command);
-    }
-    if (length > 150) {
-	length = 150;
-	ellipsis = "...";
-    }
-    while ( (command[length] & 0xC0) == 0x80 ) {
-        /*
-	 * Back up truncation point so that we don't truncate in the
-	 * middle of a multi-byte character (in UTF-8)
-	 */
-	 length--;
-	 ellipsis = "...";
-    }
-    sprintf(buffer, "\n    while compiling\n\"%.*s%s\"",
-	    length, command, ellipsis);
-    Tcl_AddObjErrorInfo(interp, buffer, -1);
+    codePtr->localCachePtr = NULL;
 }
 
 /*
@@ -2221,30 +2271,26 @@ LogCompilationInfo(interp, script, command, length)
  * Results:
  *	If create is 0 and the name is non-NULL, then if the variable is
  *	found, the index of its entry in the procedure's array of local
- *	variables is returned; otherwise -1 is returned. If name is NULL,
- *	the index of a new temporary variable is returned. Finally, if
- *	create is 1 and name is non-NULL, the index of a new entry is
- *	returned.
+ *	variables is returned; otherwise -1 is returned. If name is NULL, the
+ *	index of a new temporary variable is returned. Finally, if create is 1
+ *	and name is non-NULL, the index of a new entry is returned.
  *
  * Side effects:
- *	Creates and registers a new local variable if create is 1 and
- *	the variable is unknown, or if the name is NULL.
+ *	Creates and registers a new local variable if create is 1 and the
+ *	variable is unknown, or if the name is NULL.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclFindCompiledLocal(name, nameBytes, create, flags, procPtr)
-    register CONST char *name;	/* Points to first character of the name of
-				 * a scalar or array variable. If NULL, a
+TclFindCompiledLocal(
+    register const char *name,	/* Points to first character of the name of a
+				 * scalar or array variable. If NULL, a
 				 * temporary var should be created. */
-    int nameBytes;		/* Number of bytes in the name. */
-    int create;			/* If 1, allocate a local frame entry for
-				 * the variable if it is new. */
-    int flags;			/* Flag bits for the compiled local if
-				 * created. Only VAR_SCALAR, VAR_ARRAY, and
-				 * VAR_LINK make sense. */
-    register Proc *procPtr;	/* Points to structure describing procedure
+    int nameBytes,		/* Number of bytes in the name. */
+    int create,			/* If 1, allocate a local frame entry for the
+				 * variable if it is new. */
+    register Proc *procPtr)	/* Points to structure describing procedure
 				 * containing the variable reference. */
 {
     register CompiledLocal *localPtr;
@@ -2256,14 +2302,16 @@ TclFindCompiledLocal(name, nameBytes, create, flags, procPtr)
      * name already exist?
      */
 
-    if (name != NULL) {	
+    if (name != NULL) {
 	int localCt = procPtr->numCompiledLocals;
+
 	localPtr = procPtr->firstLocalPtr;
 	for (i = 0;  i < localCt;  i++) {
 	    if (!TclIsVarTemporary(localPtr)) {
 		char *localName = localPtr->name;
-		if ((nameBytes == localPtr->nameLength)
-	                && (strncmp(name, localName, (unsigned) nameBytes) == 0)) {
+
+		if ((nameBytes == localPtr->nameLength) &&
+			(strncmp(name,localName,(unsigned)nameBytes) == 0)) {
 		    return i;
 		}
 	    }
@@ -2274,12 +2322,12 @@ TclFindCompiledLocal(name, nameBytes, create, flags, procPtr)
     /*
      * Create a new variable if appropriate.
      */
-    
+
     if (create || (name == NULL)) {
 	localVar = procPtr->numCompiledLocals;
-	localPtr = (CompiledLocal *) ckalloc((unsigned) 
-	        (sizeof(CompiledLocal) - sizeof(localPtr->name)
-		+ nameBytes+1));
+	localPtr = (CompiledLocal *) ckalloc((unsigned)
+		(sizeof(CompiledLocal) - sizeof(localPtr->name)
+		+ nameBytes + 1));
 	if (procPtr->firstLocalPtr == NULL) {
 	    procPtr->firstLocalPtr = procPtr->lastLocalPtr = localPtr;
 	} else {
@@ -2289,7 +2337,7 @@ TclFindCompiledLocal(name, nameBytes, create, flags, procPtr)
 	localPtr->nextPtr = NULL;
 	localPtr->nameLength = nameBytes;
 	localPtr->frameIndex = localVar;
-	localPtr->flags = flags | VAR_UNDEFINED;
+	localPtr->flags = 0;
 	if (name == NULL) {
 	    localPtr->flags |= VAR_TEMPORARY;
 	}
@@ -2297,8 +2345,7 @@ TclFindCompiledLocal(name, nameBytes, create, flags, procPtr)
 	localPtr->resolveInfo = NULL;
 
 	if (name != NULL) {
-	    memcpy((VOID *) localPtr->name, (VOID *) name,
-	            (size_t) nameBytes);
+	    memcpy(localPtr->name, name, (size_t) nameBytes);
 	}
 	localPtr->name[nameBytes] = '\0';
 	procPtr->numCompiledLocals++;
@@ -2309,167 +2356,56 @@ TclFindCompiledLocal(name, nameBytes, create, flags, procPtr)
 /*
  *----------------------------------------------------------------------
  *
- * TclInitCompiledLocals --
- *
- *	This routine is invoked in order to initialize the compiled
- *	locals table for a new call frame.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	May invoke various name resolvers in order to determine which
- *	variables are being referenced at runtime.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclInitCompiledLocals(interp, framePtr, nsPtr)
-    Tcl_Interp *interp;		/* Current interpreter. */
-    CallFrame *framePtr;	/* Call frame to initialize. */
-    Namespace *nsPtr;		/* Pointer to current namespace. */
-{
-    register CompiledLocal *localPtr;
-    Interp *iPtr = (Interp*) interp;
-    Tcl_ResolvedVarInfo *vinfo, *resVarInfo;
-    Var *varPtr = framePtr->compiledLocals;
-    Var *resolvedVarPtr;
-    ResolverScheme *resPtr;
-    int result;
-
-    /*
-     * Initialize the array of local variables stored in the call frame.
-     * Some variables may have special resolution rules.  In that case,
-     * we call their "resolver" procs to get our hands on the variable,
-     * and we make the compiled local a link to the real variable.
-     */
-
-    for (localPtr = framePtr->procPtr->firstLocalPtr;
-	 localPtr != NULL;
-	 localPtr = localPtr->nextPtr) {
-
-	/*
-	 * Check to see if this local is affected by namespace or
-	 * interp resolvers.  The resolver to use is cached for the
-	 * next invocation of the procedure.
-	 */
-
-	if (!(localPtr->flags & (VAR_ARGUMENT|VAR_TEMPORARY|VAR_RESOLVED))
-		&& (nsPtr->compiledVarResProc || iPtr->resolverPtr)) {
-	    resPtr = iPtr->resolverPtr;
-
-	    if (nsPtr->compiledVarResProc) {
-		result = (*nsPtr->compiledVarResProc)(nsPtr->interp,
-			localPtr->name, localPtr->nameLength,
-			(Tcl_Namespace *) nsPtr, &vinfo);
-	    } else {
-		result = TCL_CONTINUE;
-	    }
-
-	    while ((result == TCL_CONTINUE) && resPtr) {
-		if (resPtr->compiledVarResProc) {
-		    result = (*resPtr->compiledVarResProc)(nsPtr->interp,
-			    localPtr->name, localPtr->nameLength,
-			    (Tcl_Namespace *) nsPtr, &vinfo);
-		}
-		resPtr = resPtr->nextPtr;
-	    }
-	    if (result == TCL_OK) {
-		localPtr->resolveInfo = vinfo;
-		localPtr->flags |= VAR_RESOLVED;
-	    }
-	}
-
-	/*
-	 * Now invoke the resolvers to determine the exact variables that
-	 * should be used.
-	 */
-
-        resVarInfo = localPtr->resolveInfo;
-        resolvedVarPtr = NULL;
-
-        if (resVarInfo && resVarInfo->fetchProc) {
-            resolvedVarPtr = (Var*) (*resVarInfo->fetchProc)(interp,
-		    resVarInfo);
-        }
-
-        if (resolvedVarPtr) {
-	    varPtr->name = localPtr->name; /* will be just '\0' if temp var */
-	    varPtr->nsPtr = NULL;
-	    varPtr->hPtr = NULL;
-	    varPtr->refCount = 0;
-	    varPtr->tracePtr = NULL;
-	    varPtr->searchPtr = NULL;
-	    varPtr->flags = 0;
-            TclSetVarLink(varPtr);
-            varPtr->value.linkPtr = resolvedVarPtr;
-            resolvedVarPtr->refCount++;
-        } else {
-	    varPtr->value.objPtr = NULL;
-	    varPtr->name = localPtr->name; /* will be just '\0' if temp var */
-	    varPtr->nsPtr = NULL;
-	    varPtr->hPtr = NULL;
-	    varPtr->refCount = 0;
-	    varPtr->tracePtr = NULL;
-	    varPtr->searchPtr = NULL;
-	    varPtr->flags = localPtr->flags;
-        }
-	varPtr++;
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * TclExpandCodeArray --
  *
- *	Procedure that uses malloc to allocate more storage for a
- *	CompileEnv's code array.
+ *	Procedure that uses malloc to allocate more storage for a CompileEnv's
+ *	code array.
  *
  * Results:
- *	None. 
+ *	None.
  *
  * Side effects:
- *	The byte code array in *envPtr is reallocated to a new array of
- *	double the size, and if envPtr->mallocedCodeArray is non-zero the
- *	old array is freed. Byte codes are copied from the old array to the
- *	new one.
+ *	The byte code array in *envPtr is reallocated to a new array of double
+ *	the size, and if envPtr->mallocedCodeArray is non-zero the old array
+ *	is freed. Byte codes are copied from the old array to the new one.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclExpandCodeArray(envArgPtr)
-    void *envArgPtr;		/* Points to the CompileEnv whose code array
+TclExpandCodeArray(
+    void *envArgPtr)		/* Points to the CompileEnv whose code array
 				 * must be enlarged. */
 {
-    CompileEnv *envPtr = (CompileEnv*) envArgPtr;	/* Points to the CompileEnv whose code array
-							 * must be enlarged. */
+    CompileEnv *envPtr = (CompileEnv *) envArgPtr;
+				/* The CompileEnv containing the code array to
+				 * be doubled in size. */
 
     /*
      * envPtr->codeNext is equal to envPtr->codeEnd. The currently defined
-     * code bytes are stored between envPtr->codeStart and
-     * (envPtr->codeNext - 1) [inclusive].
+     * code bytes are stored between envPtr->codeStart and envPtr->codeNext-1
+     * [inclusive].
      */
-    
+
     size_t currBytes = (envPtr->codeNext - envPtr->codeStart);
-    size_t newBytes  = 2*(envPtr->codeEnd  - envPtr->codeStart);
-    unsigned char *newPtr = (unsigned char *) ckalloc((unsigned) newBytes);
+    size_t newBytes = 2*(envPtr->codeEnd - envPtr->codeStart);
 
-    /*
-     * Copy from old code array to new, free old code array if needed, and
-     * mark new code array as malloced.
-     */
- 
-    memcpy((VOID *) newPtr, (VOID *) envPtr->codeStart, currBytes);
     if (envPtr->mallocedCodeArray) {
-        ckfree((char *) envPtr->codeStart);
+	envPtr->codeStart = (unsigned char *)
+		ckrealloc((char *)envPtr->codeStart, newBytes);
+    } else {
+	/*
+	 * envPtr->codeStart isn't a ckalloc'd pointer, so we must
+	 * code a ckrealloc equivalent for ourselves.
+	 */
+	unsigned char *newPtr = (unsigned char *) ckalloc((unsigned) newBytes);
+	memcpy(newPtr, envPtr->codeStart, currBytes);
+	envPtr->codeStart = newPtr;
+	envPtr->mallocedCodeArray = 1;
     }
-    envPtr->codeStart = newPtr;
-    envPtr->codeNext = (newPtr + currBytes);
-    envPtr->codeEnd  = (newPtr + newBytes);
-    envPtr->mallocedCodeArray = 1;
+
+    envPtr->codeNext = (envPtr->codeStart + currBytes);
+    envPtr->codeEnd = (envPtr->codeStart + newBytes);
 }
 
 /*
@@ -2477,37 +2413,37 @@ TclExpandCodeArray(envArgPtr)
  *
  * EnterCmdStartData --
  *
- *	Registers the starting source and bytecode location of a
- *	command. This information is used at runtime to map between
- *	instruction pc and source locations.
+ *	Registers the starting source and bytecode location of a command. This
+ *	information is used at runtime to map between instruction pc and
+ *	source locations.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	Inserts source and code location information into the compilation
- *	environment envPtr for the command at index cmdIndex. The
- *	compilation environment's CmdLocation array is grown if necessary.
+ *	environment envPtr for the command at index cmdIndex. The compilation
+ *	environment's CmdLocation array is grown if necessary.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-EnterCmdStartData(envPtr, cmdIndex, srcOffset, codeOffset)
-    CompileEnv *envPtr;		/* Points to the compilation environment
+EnterCmdStartData(
+    CompileEnv *envPtr,		/* Points to the compilation environment
 				 * structure in which to enter command
 				 * location information. */
-    int cmdIndex;		/* Index of the command whose start data
-				 * is being set. */
-    int srcOffset;		/* Offset of first char of the command. */
-    int codeOffset;		/* Offset of first byte of command code. */
+    int cmdIndex,		/* Index of the command whose start data is
+				 * being set. */
+    int srcOffset,		/* Offset of first char of the command. */
+    int codeOffset)		/* Offset of first byte of command code. */
 {
     CmdLocation *cmdLocPtr;
-    
+
     if ((cmdIndex < 0) || (cmdIndex >= envPtr->numCommands)) {
-	panic("EnterCmdStartData: bad command index %d\n", cmdIndex);
+	Tcl_Panic("EnterCmdStartData: bad command index %d", cmdIndex);
     }
-    
+
     if (cmdIndex >= envPtr->cmdMapEnd) {
 	/*
 	 * Expand the command location array by allocating more storage from
@@ -2516,28 +2452,29 @@ EnterCmdStartData(envPtr, cmdIndex, srcOffset, codeOffset)
 	 */
 
 	size_t currElems = envPtr->cmdMapEnd;
-	size_t newElems  = 2*currElems;
+	size_t newElems = 2*currElems;
 	size_t currBytes = currElems * sizeof(CmdLocation);
-	size_t newBytes  = newElems  * sizeof(CmdLocation);
-	CmdLocation *newPtr = (CmdLocation *) ckalloc((unsigned) newBytes);
-	
-	/*
-	 * Copy from old command location array to new, free old command
-	 * location array if needed, and mark new array as malloced.
-	 */
-	
-	memcpy((VOID *) newPtr, (VOID *) envPtr->cmdMapPtr, currBytes);
+	size_t newBytes = newElems * sizeof(CmdLocation);
+
 	if (envPtr->mallocedCmdMap) {
-	    ckfree((char *) envPtr->cmdMapPtr);
+	    envPtr->cmdMapPtr = (CmdLocation *)
+		    ckrealloc((char *) envPtr->cmdMapPtr, newBytes);
+	} else {
+	    /*
+	     * envPtr->cmdMapPtr isn't a ckalloc'd pointer, so we must
+	     * code a ckrealloc equivalent for ourselves.
+	     */
+	    CmdLocation *newPtr = (CmdLocation *) ckalloc((unsigned) newBytes);
+	    memcpy(newPtr, envPtr->cmdMapPtr, currBytes);
+	    envPtr->cmdMapPtr = newPtr;
+	    envPtr->mallocedCmdMap = 1;
 	}
-	envPtr->cmdMapPtr = (CmdLocation *) newPtr;
 	envPtr->cmdMapEnd = newElems;
-	envPtr->mallocedCmdMap = 1;
     }
 
     if (cmdIndex > 0) {
 	if (codeOffset < envPtr->cmdMapPtr[cmdIndex-1].codeOffset) {
-	    panic("EnterCmdStartData: cmd map not sorted by code offset");
+	    Tcl_Panic("EnterCmdStartData: cmd map not sorted by code offset");
 	}
     }
 
@@ -2562,32 +2499,32 @@ EnterCmdStartData(envPtr, cmdIndex, srcOffset, codeOffset)
  *
  * Side effects:
  *	Inserts source and code length information into the compilation
- *	environment envPtr for the command at index cmdIndex. Starting
- *	source and bytecode information for the command must already
- *	have been registered.
+ *	environment envPtr for the command at index cmdIndex. Starting source
+ *	and bytecode information for the command must already have been
+ *	registered.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-EnterCmdExtentData(envPtr, cmdIndex, numSrcBytes, numCodeBytes)
-    CompileEnv *envPtr;		/* Points to the compilation environment
+EnterCmdExtentData(
+    CompileEnv *envPtr,		/* Points to the compilation environment
 				 * structure in which to enter command
 				 * location information. */
-    int cmdIndex;		/* Index of the command whose source and
-				 * code length data is being set. */
-    int numSrcBytes;		/* Number of command source chars. */
-    int numCodeBytes;		/* Offset of last byte of command code. */
+    int cmdIndex,		/* Index of the command whose source and code
+				 * length data is being set. */
+    int numSrcBytes,		/* Number of command source chars. */
+    int numCodeBytes)		/* Offset of last byte of command code. */
 {
     CmdLocation *cmdLocPtr;
 
     if ((cmdIndex < 0) || (cmdIndex >= envPtr->numCommands)) {
-	panic("EnterCmdExtentData: bad command index %d\n", cmdIndex);
+	Tcl_Panic("EnterCmdExtentData: bad command index %d", cmdIndex);
     }
-    
+
     if (cmdIndex > envPtr->cmdMapEnd) {
-	panic("EnterCmdExtentData: missing start data for command %d\n",
-	        cmdIndex);
+	Tcl_Panic("EnterCmdExtentData: missing start data for command %d",
+		cmdIndex);
     }
 
     cmdLocPtr = &(envPtr->cmdMapPtr[cmdIndex]);
@@ -2595,105 +2532,86 @@ EnterCmdExtentData(envPtr, cmdIndex, numSrcBytes, numCodeBytes)
     cmdLocPtr->numCodeBytes = numCodeBytes;
 }
 
-#ifdef TCL_TIP280
 /*
  *----------------------------------------------------------------------
  * TIP #280
  *
  * EnterCmdWordData --
  *
- *	Registers the lines for the words of a command. This information
- *	is used at runtime by 'info frame'.
+ *	Registers the lines for the words of a command. This information is
+ *	used at runtime by 'info frame'.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Inserts word location information into the compilation
- *	environment envPtr for the command at index cmdIndex. The
- *	compilation environment's ExtCmdLoc.ECL array is grown if necessary.
+ *	Inserts word location information into the compilation environment
+ *	envPtr for the command at index cmdIndex. The compilation
+ *	environment's ExtCmdLoc.ECL array is grown if necessary.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-EnterCmdWordData(eclPtr, srcOffset, tokenPtr, cmd, len, numWords, line, clNext, wlines, envPtr)
-    ExtCmdLoc *eclPtr;		/* Points to the map environment
-				 * structure in which to enter command
-				 * location information. */
-    int srcOffset;		/* Offset of first char of the command. */
-    Tcl_Token* tokenPtr;
-    CONST char* cmd;
-    int         len;
-    int numWords;
-    int line;
-    int* clNext;
-    int** wlines;
-    CompileEnv* envPtr;
-{    
-    ECL*        ePtr;
-    int         wordIdx;
-    CONST char* last;
-    int         wordLine;
-    int*        wordNext;
-    int*        wwlines;
+EnterCmdWordData(
+    ExtCmdLoc *eclPtr,		/* Points to the map environment structure in
+				 * which to enter command location
+				 * information. */
+    int srcOffset,		/* Offset of first char of the command. */
+    Tcl_Token *tokenPtr,
+    const char *cmd,
+    int len,
+    int numWords,
+    int line,
+    int* clNext,
+    int **wlines,
+    CompileEnv* envPtr)
+{
+    ECL *ePtr;
+    const char *last;
+    int wordIdx, wordLine, *wwlines;
+    int* wordNext;
 
     if (eclPtr->nuloc >= eclPtr->nloc) {
 	/*
-	 * Expand the ECL array by allocating more storage from the
-	 * heap. The currently allocated ECL entries are stored from
-	 * eclPtr->loc[0] up to eclPtr->loc[eclPtr->nuloc-1] (inclusive).
+	 * Expand the ECL array by allocating more storage from the heap. The
+	 * currently allocated ECL entries are stored from eclPtr->loc[0] up
+	 * to eclPtr->loc[eclPtr->nuloc-1] (inclusive).
 	 */
 
 	size_t currElems = eclPtr->nloc;
-	size_t newElems  = (currElems ? 2*currElems : 1);
-	size_t currBytes = currElems * sizeof(ECL);
-	size_t newBytes  = newElems  * sizeof(ECL);
-	ECL *  newPtr    = (ECL *) ckalloc((unsigned) newBytes);
+	size_t newElems = (currElems ? 2*currElems : 1);
+	size_t newBytes = newElems * sizeof(ECL);
 
-	/*
-	 * Copy from old ECL array to new, free old ECL array if
-	 * needed.
-	 */
-	
-	if (currBytes) {
-	    memcpy((VOID *) newPtr, (VOID *) eclPtr->loc, currBytes);
-	}
-	if (eclPtr->loc != NULL) {
-	    ckfree((char *) eclPtr->loc);
-	}
-	eclPtr->loc  = (ECL *) newPtr;
+	eclPtr->loc = (ECL *) ckrealloc((char *)(eclPtr->loc), newBytes);
 	eclPtr->nloc = newElems;
     }
 
-    ePtr            = &eclPtr->loc [eclPtr->nuloc];
+    ePtr = &eclPtr->loc[eclPtr->nuloc];
     ePtr->srcOffset = srcOffset;
-    ePtr->line      = (int*) ckalloc (numWords * sizeof (int));
-    ePtr->next      = (int**) ckalloc (numWords * sizeof (int*));
-    ePtr->nline     = numWords;
-    wwlines         = (int*) ckalloc (numWords * sizeof (int));
+    ePtr->line = (int *) ckalloc(numWords * sizeof(int));
+    ePtr->next = (int**) ckalloc (numWords * sizeof (int*));
+    ePtr->nline = numWords;
+    wwlines = (int *) ckalloc(numWords * sizeof(int));
 
-    last     = cmd;
+    last = cmd;
     wordLine = line;
     wordNext = clNext;
-    for (wordIdx = 0;
-	 wordIdx < numWords;
-	 wordIdx++, tokenPtr += (tokenPtr->numComponents + 1)) {
+    for (wordIdx=0 ; wordIdx<numWords;
+	    wordIdx++, tokenPtr += tokenPtr->numComponents + 1) {
         TclAdvanceLines         (&wordLine, last, tokenPtr->start);
 	TclAdvanceContinuations (&wordLine, &wordNext,
 				 tokenPtr->start - envPtr->source);
-	wwlines    [wordIdx] = (TclWordKnownAtCompileTime (tokenPtr)
-				? wordLine
-				: -1);
-	ePtr->line [wordIdx] = wordLine;
-	ePtr->next [wordIdx] = wordNext;
+	wwlines[wordIdx] =
+		(TclWordKnownAtCompileTime(tokenPtr, NULL) ? wordLine : -1);
+	ePtr->line[wordIdx] = wordLine;
+	ePtr->next[wordIdx] = wordNext;
 	last = tokenPtr->start;
     }
 
     *wlines = wwlines;
     eclPtr->nuloc ++;
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
@@ -2707,55 +2625,53 @@ EnterCmdWordData(eclPtr, srcOffset, tokenPtr, cmd, len, numWords, line, clNext,
  *	Returns the index for the newly created ExceptionRange.
  *
  * Side effects:
- *	If there is not enough room in the CompileEnv's ExceptionRange
- *	array, the array in expanded: a new array of double the size is
- *	allocated, if envPtr->mallocedExceptArray is non-zero the old
- *	array is freed, and ExceptionRange entries are copied from the old
- *	array to the new one.
+ *	If there is not enough room in the CompileEnv's ExceptionRange array,
+ *	the array in expanded: a new array of double the size is allocated, if
+ *	envPtr->mallocedExceptArray is non-zero the old array is freed, and
+ *	ExceptionRange entries are copied from the old array to the new one.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCreateExceptRange(type, envPtr)
-    ExceptionRangeType type;	/* The kind of ExceptionRange desired. */
-    register CompileEnv *envPtr;/* Points to CompileEnv for which to
-				 * create a new ExceptionRange structure. */
+TclCreateExceptRange(
+    ExceptionRangeType type,	/* The kind of ExceptionRange desired. */
+    register CompileEnv *envPtr)/* Points to CompileEnv for which to create a
+				 * new ExceptionRange structure. */
 {
     register ExceptionRange *rangePtr;
     int index = envPtr->exceptArrayNext;
-    
+
     if (index >= envPtr->exceptArrayEnd) {
-        /*
+	/*
 	 * Expand the ExceptionRange array. The currently allocated entries
 	 * are stored between elements 0 and (envPtr->exceptArrayNext - 1)
 	 * [inclusive].
 	 */
-	
+
 	size_t currBytes =
-	        envPtr->exceptArrayNext * sizeof(ExceptionRange);
+		envPtr->exceptArrayNext * sizeof(ExceptionRange);
 	int newElems = 2*envPtr->exceptArrayEnd;
 	size_t newBytes = newElems * sizeof(ExceptionRange);
-	ExceptionRange *newPtr = (ExceptionRange *)
-	        ckalloc((unsigned) newBytes);
-	
-	/*
-	 * Copy from old ExceptionRange array to new, free old
-	 * ExceptionRange array if needed, and mark the new ExceptionRange
-	 * array as malloced.
-	 */
-	
-	memcpy((VOID *) newPtr, (VOID *) envPtr->exceptArrayPtr,
-	        currBytes);
+
 	if (envPtr->mallocedExceptArray) {
-	    ckfree((char *) envPtr->exceptArrayPtr);
+	    envPtr->exceptArrayPtr = (ExceptionRange *)
+		    ckrealloc((char *)(envPtr->exceptArrayPtr), newBytes);
+	} else {
+	    /*
+	     * envPtr->exceptArrayPtr isn't a ckalloc'd pointer, so we must
+	     * code a ckrealloc equivalent for ourselves.
+	     */
+	    ExceptionRange *newPtr = (ExceptionRange *)
+		    ckalloc((unsigned) newBytes);
+	    memcpy(newPtr, envPtr->exceptArrayPtr, currBytes);
+	    envPtr->exceptArrayPtr = newPtr;
+	    envPtr->mallocedExceptArray = 1;
 	}
-	envPtr->exceptArrayPtr = (ExceptionRange *) newPtr;
 	envPtr->exceptArrayEnd = newElems;
-	envPtr->mallocedExceptArray = 1;
     }
     envPtr->exceptArrayNext++;
-    
+
     rangePtr = &(envPtr->exceptArrayPtr[index]);
     rangePtr->type = type;
     rangePtr->nestingLevel = envPtr->exceptDepth;
@@ -2772,8 +2688,8 @@ TclCreateExceptRange(type, envPtr)
  *
  * TclCreateAuxData --
  *
- *	Procedure that allocates and initializes a new AuxData structure in
- *	a CompileEnv's array of compilation auxiliary data records. These
+ *	Procedure that allocates and initializes a new AuxData structure in a
+ *	CompileEnv's array of compilation auxiliary data records. These
  *	AuxData records hold information created during compilation by
  *	CompileProcs and used by instructions during execution.
  *
@@ -2781,56 +2697,57 @@ TclCreateExceptRange(type, envPtr)
  *	Returns the index for the newly created AuxData structure.
  *
  * Side effects:
- *	If there is not enough room in the CompileEnv's AuxData array,
- *	the AuxData array in expanded: a new array of double the size
- *	is allocated, if envPtr->mallocedAuxDataArray is non-zero
- *	the old array is freed, and AuxData entries are copied from
- *	the old array to the new one.
+ *	If there is not enough room in the CompileEnv's AuxData array, the
+ *	AuxData array in expanded: a new array of double the size is
+ *	allocated, if envPtr->mallocedAuxDataArray is non-zero the old array
+ *	is freed, and AuxData entries are copied from the old array to the new
+ *	one.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCreateAuxData(clientData, typePtr, envPtr)
-    ClientData clientData;	/* The compilation auxiliary data to store
-				 * in the new aux data record. */
-    AuxDataType *typePtr;	/* Pointer to the type to attach to this AuxData */
-    register CompileEnv *envPtr;/* Points to the CompileEnv for which a new
+TclCreateAuxData(
+    ClientData clientData,	/* The compilation auxiliary data to store in
+				 * the new aux data record. */
+    AuxDataType *typePtr,	/* Pointer to the type to attach to this
+				 * AuxData */
+    register CompileEnv *envPtr)/* Points to the CompileEnv for which a new
 				 * aux data structure is to be allocated. */
 {
     int index;			/* Index for the new AuxData structure. */
     register AuxData *auxDataPtr;
     				/* Points to the new AuxData structure */
-    
+
     index = envPtr->auxDataArrayNext;
     if (index >= envPtr->auxDataArrayEnd) {
-        /*
+	/*
 	 * Expand the AuxData array. The currently allocated entries are
 	 * stored between elements 0 and (envPtr->auxDataArrayNext - 1)
 	 * [inclusive].
 	 */
-	
+
 	size_t currBytes = envPtr->auxDataArrayNext * sizeof(AuxData);
 	int newElems = 2*envPtr->auxDataArrayEnd;
 	size_t newBytes = newElems * sizeof(AuxData);
-	AuxData *newPtr = (AuxData *) ckalloc((unsigned) newBytes);
-	
-	/*
-	 * Copy from old AuxData array to new, free old AuxData array if
-	 * needed, and mark the new AuxData array as malloced.
-	 */
-	
-	memcpy((VOID *) newPtr, (VOID *) envPtr->auxDataArrayPtr,
-	        currBytes);
+
 	if (envPtr->mallocedAuxDataArray) {
-	    ckfree((char *) envPtr->auxDataArrayPtr);
+	    envPtr->auxDataArrayPtr = (AuxData *)
+		    ckrealloc((char *)(envPtr->auxDataArrayPtr), newBytes);
+	} else {
+	    /*
+	     * envPtr->auxDataArrayPtr isn't a ckalloc'd pointer, so we must
+	     * code a ckrealloc equivalent for ourselves.
+	     */
+	    AuxData *newPtr = (AuxData *) ckalloc((unsigned) newBytes);
+	    memcpy(newPtr, envPtr->auxDataArrayPtr, currBytes);
+	    envPtr->auxDataArrayPtr = newPtr;
+	    envPtr->mallocedAuxDataArray = 1;
 	}
-	envPtr->auxDataArrayPtr = newPtr;
 	envPtr->auxDataArrayEnd = newElems;
-	envPtr->mallocedAuxDataArray = 1;
     }
     envPtr->auxDataArrayNext++;
-    
+
     auxDataPtr = &(envPtr->auxDataArrayPtr[index]);
     auxDataPtr->clientData = clientData;
     auxDataPtr->type = typePtr;
@@ -2842,8 +2759,8 @@ TclCreateAuxData(clientData, typePtr, envPtr)
  *
  * TclInitJumpFixupArray --
  *
- *	Initializes a JumpFixupArray structure to hold some number of
- *	jump fixup entries.
+ *	Initializes a JumpFixupArray structure to hold some number of jump
+ *	fixup entries.
  *
  * Results:
  *	None.
@@ -2855,10 +2772,10 @@ TclCreateAuxData(clientData, typePtr, envPtr)
  */
 
 void
-TclInitJumpFixupArray(fixupArrayPtr)
-    register JumpFixupArray *fixupArrayPtr;
-				 /* Points to the JumpFixupArray structure
-				  * to initialize. */
+TclInitJumpFixupArray(
+    register JumpFixupArray *fixupArrayPtr)
+				/* Points to the JumpFixupArray structure to
+				 * initialize. */
 {
     fixupArrayPtr->fixup = fixupArrayPtr->staticFixupSpace;
     fixupArrayPtr->next = 0;
@@ -2871,8 +2788,8 @@ TclInitJumpFixupArray(fixupArrayPtr)
  *
  * TclExpandJumpFixupArray --
  *
- *	Procedure that uses malloc to allocate more storage for a
- *      jump fixup array.
+ *	Procedure that uses malloc to allocate more storage for a jump fixup
+ *	array.
  *
  * Results:
  *	None.
@@ -2880,41 +2797,42 @@ TclInitJumpFixupArray(fixupArrayPtr)
  * Side effects:
  *	The jump fixup array in *fixupArrayPtr is reallocated to a new array
  *	of double the size, and if fixupArrayPtr->mallocedArray is non-zero
- *	the old array is freed. Jump fixup structures are copied from the
- *	old array to the new one.
+ *	the old array is freed. Jump fixup structures are copied from the old
+ *	array to the new one.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclExpandJumpFixupArray(fixupArrayPtr)
-    register JumpFixupArray *fixupArrayPtr;
-				 /* Points to the JumpFixupArray structure
-				  * to enlarge. */
+TclExpandJumpFixupArray(
+    register JumpFixupArray *fixupArrayPtr)
+				/* Points to the JumpFixupArray structure
+				 * to enlarge. */
 {
     /*
-     * The currently allocated jump fixup entries are stored from fixup[0]
-     * up to fixup[fixupArrayPtr->fixupNext] (*not* inclusive). We assume
+     * The currently allocated jump fixup entries are stored from fixup[0] up
+     * to fixup[fixupArrayPtr->fixupNext] (*not* inclusive). We assume
      * fixupArrayPtr->fixupNext is equal to fixupArrayPtr->fixupEnd.
      */
 
     size_t currBytes = fixupArrayPtr->next * sizeof(JumpFixup);
     int newElems = 2*(fixupArrayPtr->end + 1);
     size_t newBytes = newElems * sizeof(JumpFixup);
-    JumpFixup *newPtr = (JumpFixup *) ckalloc((unsigned) newBytes);
 
-    /*
-     * Copy from the old array to new, free the old array if needed,
-     * and mark the new array as malloced.
-     */
- 
-    memcpy((VOID *) newPtr, (VOID *) fixupArrayPtr->fixup, currBytes);
     if (fixupArrayPtr->mallocedArray) {
-	ckfree((char *) fixupArrayPtr->fixup);
+	fixupArrayPtr->fixup = (JumpFixup *)
+		ckrealloc((char *)(fixupArrayPtr->fixup), newBytes);
+    } else {
+	/*
+	 * fixupArrayPtr->fixup isn't a ckalloc'd pointer, so we must
+	 * code a ckrealloc equivalent for ourselves.
+	 */
+	JumpFixup *newPtr = (JumpFixup *) ckalloc((unsigned) newBytes);
+	memcpy(newPtr, fixupArrayPtr->fixup, currBytes);
+	fixupArrayPtr->fixup = newPtr;
+	fixupArrayPtr->mallocedArray = 1;
     }
-    fixupArrayPtr->fixup = (JumpFixup *) newPtr;
     fixupArrayPtr->end = newElems;
-    fixupArrayPtr->mallocedArray = 1;
 }
 
 /*
@@ -2934,10 +2852,10 @@ TclExpandJumpFixupArray(fixupArrayPtr)
  */
 
 void
-TclFreeJumpFixupArray(fixupArrayPtr)
-    register JumpFixupArray *fixupArrayPtr;
-				 /* Points to the JumpFixupArray structure
-				  * to free. */
+TclFreeJumpFixupArray(
+    register JumpFixupArray *fixupArrayPtr)
+				/* Points to the JumpFixupArray structure to
+				 * free. */
 {
     if (fixupArrayPtr->mallocedArray) {
 	ckfree((char *) fixupArrayPtr->fixup);
@@ -2952,27 +2870,27 @@ TclFreeJumpFixupArray(fixupArrayPtr)
  *	Procedure to emit a two-byte forward jump of kind "jumpType". Since
  *	the jump may later have to be grown to five bytes if the jump target
  *	is more than, say, 127 bytes away, this procedure also initializes a
- *	JumpFixup record with information about the jump. 
+ *	JumpFixup record with information about the jump.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The JumpFixup record pointed to by "jumpFixupPtr" is initialized
- *	with information needed later if the jump is to be grown. Also,
- *	a two byte jump of the designated type is emitted at the current
- *	point in the bytecode stream.
+ *	The JumpFixup record pointed to by "jumpFixupPtr" is initialized with
+ *	information needed later if the jump is to be grown. Also, a two byte
+ *	jump of the designated type is emitted at the current point in the
+ *	bytecode stream.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclEmitForwardJump(envPtr, jumpType, jumpFixupPtr)
-    CompileEnv *envPtr;		/* Points to the CompileEnv structure that
+TclEmitForwardJump(
+    CompileEnv *envPtr,		/* Points to the CompileEnv structure that
 				 * holds the resulting instruction. */
-    TclJumpType jumpType;	/* Indicates the kind of jump: if true or
+    TclJumpType jumpType,	/* Indicates the kind of jump: if true or
 				 * false or unconditional. */
-    JumpFixup *jumpFixupPtr;	/* Points to the JumpFixup structure to
+    JumpFixup *jumpFixupPtr)	/* Points to the JumpFixup structure to
 				 * initialize with information about this
 				 * forward jump. */
 {
@@ -2980,15 +2898,15 @@ TclEmitForwardJump(envPtr, jumpType, jumpFixupPtr)
      * Initialize the JumpFixup structure:
      *    - codeOffset is offset of first byte of jump below
      *    - cmdIndex is index of the command after the current one
-     *    - exceptIndex is the index of the first ExceptionRange after
-     *      the current one.
+     *    - exceptIndex is the index of the first ExceptionRange after the
+     *	    current one.
      */
-    
+
     jumpFixupPtr->jumpType = jumpType;
     jumpFixupPtr->codeOffset = (envPtr->codeNext - envPtr->codeStart);
     jumpFixupPtr->cmdIndex = envPtr->numCommands;
     jumpFixupPtr->exceptIndex = envPtr->exceptArrayNext;
-    
+
     switch (jumpType) {
     case TCL_UNCONDITIONAL_JUMP:
 	TclEmitInstInt1(INST_JUMP1, 0, envPtr);
@@ -3007,43 +2925,41 @@ TclEmitForwardJump(envPtr, jumpType, jumpFixupPtr)
  *
  * TclFixupForwardJump --
  *
- *	Procedure that updates a previously-emitted forward jump to jump
- *	a specified number of bytes, "jumpDist". If necessary, the jump is
- *      grown from two to five bytes; this is done if the jump distance is
- *	greater than "distThreshold" (normally 127 bytes). The jump is
- *	described by a JumpFixup record previously initialized by
- *	TclEmitForwardJump.
+ *	Procedure that updates a previously-emitted forward jump to jump a
+ *	specified number of bytes, "jumpDist". If necessary, the jump is grown
+ *	from two to five bytes; this is done if the jump distance is greater
+ *	than "distThreshold" (normally 127 bytes). The jump is described by a
+ *	JumpFixup record previously initialized by TclEmitForwardJump.
  *
  * Results:
  *	1 if the jump was grown and subsequent instructions had to be moved;
- *	otherwise 0. This result is returned to allow callers to update
- *	any additional code offsets they may hold.
+ *	otherwise 0. This result is returned to allow callers to update any
+ *	additional code offsets they may hold.
  *
  * Side effects:
  *	The jump may be grown and subsequent instructions moved. If this
  *	happens, the code offsets for any commands and any ExceptionRange
- *	records	between the jump and the current code address will be
- *	updated to reflect the moved code. Also, the bytecode instruction
- *	array in the CompileEnv structure may be grown and reallocated.
+ *	records between the jump and the current code address will be updated
+ *	to reflect the moved code. Also, the bytecode instruction array in the
+ *	CompileEnv structure may be grown and reallocated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclFixupForwardJump(envPtr, jumpFixupPtr, jumpDist, distThreshold)
-    CompileEnv *envPtr;		/* Points to the CompileEnv structure that
+TclFixupForwardJump(
+    CompileEnv *envPtr,		/* Points to the CompileEnv structure that
 				 * holds the resulting instruction. */
-    JumpFixup *jumpFixupPtr;    /* Points to the JumpFixup structure that
+    JumpFixup *jumpFixupPtr,	/* Points to the JumpFixup structure that
 				 * describes the forward jump. */
-    int jumpDist;		/* Jump distance to set in jump
-				 * instruction. */
-    int distThreshold;		/* Maximum distance before the two byte
-				 * jump is grown to five bytes. */
+    int jumpDist,		/* Jump distance to set in jump instr. */
+    int distThreshold)		/* Maximum distance before the two byte jump
+				 * is grown to five bytes. */
 {
     unsigned char *jumpPc, *p;
     int firstCmd, lastCmd, firstRange, lastRange, k;
-    unsigned int numBytes;
-    
+    unsigned numBytes;
+
     if (jumpDist <= distThreshold) {
 	jumpPc = (envPtr->codeStart + jumpFixupPtr->codeOffset);
 	switch (jumpFixupPtr->jumpType) {
@@ -3061,14 +2977,14 @@ TclFixupForwardJump(envPtr, jumpFixupPtr, jumpDist, distThreshold)
     }
 
     /*
-     * We must grow the jump then move subsequent instructions down.
-     * Note that if we expand the space for generated instructions,
-     * code addresses might change; be careful about updating any of
-     * these addresses held in variables.
+     * We must grow the jump then move subsequent instructions down. Note that
+     * if we expand the space for generated instructions, code addresses might
+     * change; be careful about updating any of these addresses held in
+     * variables.
      */
-    
+
     if ((envPtr->codeNext + 3) > envPtr->codeEnd) {
-        TclExpandCodeArray(envPtr);
+	TclExpandCodeArray(envPtr);
     }
     jumpPc = (envPtr->codeStart + jumpFixupPtr->codeOffset);
     numBytes = envPtr->codeNext-jumpPc-2;
@@ -3088,26 +3004,26 @@ TclFixupForwardJump(envPtr, jumpFixupPtr, jumpDist, distThreshold)
 	TclUpdateInstInt4AtPc(INST_JUMP_FALSE4, jumpDist, jumpPc);
 	break;
     }
-    
+
     /*
-     * Adjust the code offsets for any commands and any ExceptionRange
-     * records between the jump and the current code address.
+     * Adjust the code offsets for any commands and any ExceptionRange records
+     * between the jump and the current code address.
      */
-    
+
     firstCmd = jumpFixupPtr->cmdIndex;
-    lastCmd  = (envPtr->numCommands - 1);
+    lastCmd = (envPtr->numCommands - 1);
     if (firstCmd < lastCmd) {
 	for (k = firstCmd;  k <= lastCmd;  k++) {
 	    (envPtr->cmdMapPtr[k]).codeOffset += 3;
 	}
     }
-    
+
     firstRange = jumpFixupPtr->exceptIndex;
-    lastRange  = (envPtr->exceptArrayNext - 1);
+    lastRange = (envPtr->exceptArrayNext - 1);
     for (k = firstRange;  k <= lastRange;  k++) {
 	ExceptionRange *rangePtr = &(envPtr->exceptArrayPtr[k]);
 	rangePtr->codeOffset += 3;
-	
+
 	switch (rangePtr->type) {
 	case LOOP_EXCEPTION_RANGE:
 	    rangePtr->breakOffset += 3;
@@ -3119,10 +3035,74 @@ TclFixupForwardJump(envPtr, jumpFixupPtr, jumpDist, distThreshold)
 	    rangePtr->catchOffset += 3;
 	    break;
 	default:
-	    panic("TclFixupForwardJump: bad ExceptionRange type %d\n",
-	            rangePtr->type);
+	    Tcl_Panic("TclFixupForwardJump: bad ExceptionRange type %d",
+		    rangePtr->type);
+	}
+    }
+
+    /*
+     * TIP #280: Adjust the mapping from PC values to the per-command
+     * information about arguments and their line numbers.
+     *
+     * Note: We cannot simply remove an out-of-date entry and then reinsert
+     * with the proper PC, because then we might overwrite another entry which
+     * was at that location. Therefore we pull (copy + delete) all effected
+     * entries (beyond the fixed PC) into an array, update them there, and at
+     * last reinsert them all.
+     */
+
+    {
+	ExtCmdLoc* eclPtr = envPtr->extCmdMapPtr;
+
+	/* A helper structure */
+
+	typedef struct {
+	    int pc;
+	    int cmd;
+	} MAP;
+
+	/*
+	 * And the helper array. At most the whole hashtable is placed into
+	 * this.
+	 */
+
+	MAP *map = (MAP*) ckalloc (sizeof(MAP) * eclPtr->litInfo.numEntries);
+
+	Tcl_HashSearch hSearch;
+	Tcl_HashEntry* hPtr;
+	int n, k, isnew;
+
+	/*
+	 * Phase I: Locate the affected entries, and save them in adjusted
+	 * form to the array. This removes them from the hash.
+	 */
+
+	for (n = 0, hPtr = Tcl_FirstHashEntry(&eclPtr->litInfo, &hSearch);
+	     hPtr != NULL;
+	     hPtr = Tcl_NextHashEntry(&hSearch)) {
+
+	    map [n].cmd = PTR2INT(Tcl_GetHashValue(hPtr));
+	    map [n].pc  = PTR2INT(Tcl_GetHashKey (&eclPtr->litInfo,hPtr));
+
+	    if (map[n].pc >= (jumpFixupPtr->codeOffset + 2)) {
+		Tcl_DeleteHashEntry(hPtr);
+		map [n].pc += 3;
+		n++;
+	    }
 	}
+
+	/*
+	 * Phase II: Re-insert the modified entries into the hash.
+	 */
+
+	for (k=0;k<n;k++) {
+	    hPtr = Tcl_CreateHashEntry(&eclPtr->litInfo, INT2PTR(map[k].pc), &isnew);
+	    Tcl_SetHashValue(hPtr, INT2PTR(map[k].cmd));
+	}
+
+	ckfree ((char *) map);
     }
+
     return 1;			/* the jump was grown */
 }
 
@@ -3131,9 +3111,9 @@ TclFixupForwardJump(envPtr, jumpFixupPtr, jumpDist, distThreshold)
  *
  * TclGetInstructionTable --
  *
- *  Returns a pointer to the table describing Tcl bytecode instructions.
- *  This procedure is defined so that clients can access the pointer from
- *  outside the TCL DLLs.
+ *	Returns a pointer to the table describing Tcl bytecode instructions.
+ *	This procedure is defined so that clients can access the pointer from
+ *	outside the TCL DLLs.
  *
  * Results:
  *	Returns a pointer to the global instruction table, same as the
@@ -3146,7 +3126,7 @@ TclFixupForwardJump(envPtr, jumpFixupPtr, jumpDist, distThreshold)
  */
 
 void * /* == InstructionDesc* == */
-TclGetInstructionTable()
+TclGetInstructionTable(void)
 {
     return &tclInstructionTable[0];
 }
@@ -3156,32 +3136,32 @@ TclGetInstructionTable()
  *
  * TclRegisterAuxDataType --
  *
- *	This procedure is called to register a new AuxData type
- *	in the table of all AuxData types supported by Tcl.
+ *	This procedure is called to register a new AuxData type in the table
+ *	of all AuxData types supported by Tcl.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	The type is registered in the AuxData type table. If there was already
- *	a type with the same name as in typePtr, it is replaced with the
- *	new type.
+ *	a type with the same name as in typePtr, it is replaced with the new
+ *	type.
  *
  *--------------------------------------------------------------
  */
 
 void
-TclRegisterAuxDataType(typePtr)
-    AuxDataType *typePtr;	/* Information about object type;
-                             * storage must be statically
-                             * allocated (must live forever). */
+TclRegisterAuxDataType(
+    AuxDataType *typePtr)	/* Information about object type; storage must
+				 * be statically allocated (must live forever;
+				 * will not be deallocated). */
 {
     register Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
 
     Tcl_MutexLock(&tableMutex);
     if (!auxDataTypeTableInitialized) {
-        TclInitAuxDataTypeTable();
+	TclInitAuxDataTypeTable();
     }
 
     /*
@@ -3189,17 +3169,17 @@ TclRegisterAuxDataType(typePtr)
      */
 
     hPtr = Tcl_FindHashEntry(&auxDataTypeTable, typePtr->name);
-    if (hPtr != (Tcl_HashEntry *) NULL) {
-        Tcl_DeleteHashEntry(hPtr);
+    if (hPtr != NULL) {
+	Tcl_DeleteHashEntry(hPtr);
     }
 
     /*
      * Now insert the new object type.
      */
 
-    hPtr = Tcl_CreateHashEntry(&auxDataTypeTable, typePtr->name, &new);
-    if (new) {
-        Tcl_SetHashValue(hPtr, typePtr);
+    hPtr = Tcl_CreateHashEntry(&auxDataTypeTable, typePtr->name, &isNew);
+    if (isNew) {
+	Tcl_SetHashValue(hPtr, typePtr);
     }
     Tcl_MutexUnlock(&tableMutex);
 }
@@ -3222,20 +3202,20 @@ TclRegisterAuxDataType(typePtr)
  */
 
 AuxDataType *
-TclGetAuxDataType(typeName)
-    char *typeName;		/* Name of AuxData type to look up. */
+TclGetAuxDataType(
+    char *typeName)		/* Name of AuxData type to look up. */
 {
     register Tcl_HashEntry *hPtr;
     AuxDataType *typePtr = NULL;
 
     Tcl_MutexLock(&tableMutex);
     if (!auxDataTypeTableInitialized) {
-        TclInitAuxDataTypeTable();
+	TclInitAuxDataTypeTable();
     }
 
     hPtr = Tcl_FindHashEntry(&auxDataTypeTable, typeName);
-    if (hPtr != (Tcl_HashEntry *) NULL) {
-        typePtr = (AuxDataType *) Tcl_GetHashValue(hPtr);
+    if (hPtr != NULL) {
+	typePtr = (AuxDataType *) Tcl_GetHashValue(hPtr);
     }
     Tcl_MutexUnlock(&tableMutex);
 
@@ -3247,8 +3227,8 @@ TclGetAuxDataType(typeName)
  *
  * TclInitAuxDataTypeTable --
  *
- *	This procedure is invoked to perform once-only initialization of
- *	the AuxData type table. It also registers the AuxData types defined in 
+ *	This procedure is invoked to perform once-only initialization of the
+ *	AuxData type table. It also registers the AuxData types defined in
  *	this file.
  *
  * Results:
@@ -3262,7 +3242,7 @@ TclGetAuxDataType(typeName)
  */
 
 void
-TclInitAuxDataTypeTable()
+TclInitAuxDataTypeTable(void)
 {
     /*
      * The table mutex must already be held before this routine is invoked.
@@ -3272,10 +3252,11 @@ TclInitAuxDataTypeTable()
     Tcl_InitHashTable(&auxDataTypeTable, TCL_STRING_KEYS);
 
     /*
-     * There is only one AuxData type at this time, so register it here.
+     * There are only two AuxData type at this time, so register them here.
      */
 
     TclRegisterAuxDataType(&tclForeachInfoType);
+    TclRegisterAuxDataType(&tclJumptableInfoType);
 }
 
 /*
@@ -3283,10 +3264,10 @@ TclInitAuxDataTypeTable()
  *
  * TclFinalizeAuxDataTypeTable --
  *
- *	This procedure is called by Tcl_Finalize after all exit handlers
- *	have been run to free up storage associated with the table of AuxData
- *	types.  This procedure is called by TclFinalizeExecution() which
- *	is called by Tcl_Finalize().
+ *	This procedure is called by Tcl_Finalize after all exit handlers have
+ *	been run to free up storage associated with the table of AuxData
+ *	types. This procedure is called by TclFinalizeExecution() which is
+ *	called by Tcl_Finalize().
  *
  * Results:
  *	None.
@@ -3298,12 +3279,12 @@ TclInitAuxDataTypeTable()
  */
 
 void
-TclFinalizeAuxDataTypeTable()
+TclFinalizeAuxDataTypeTable(void)
 {
     Tcl_MutexLock(&tableMutex);
     if (auxDataTypeTableInitialized) {
-        Tcl_DeleteHashTable(&auxDataTypeTable);
-        auxDataTypeTableInitialized = 0;
+	Tcl_DeleteHashTable(&auxDataTypeTable);
+	auxDataTypeTableInitialized = 0;
     }
     Tcl_MutexUnlock(&tableMutex);
 }
@@ -3326,18 +3307,18 @@ TclFinalizeAuxDataTypeTable()
  */
 
 static int
-GetCmdLocEncodingSize(envPtr)
-     CompileEnv *envPtr;	/* Points to compilation environment
-				 * structure containing the CmdLocation
-				 * structure to encode. */
+GetCmdLocEncodingSize(
+    CompileEnv *envPtr)		/* Points to compilation environment structure
+				 * containing the CmdLocation structure to
+				 * encode. */
 {
     register CmdLocation *mapPtr = envPtr->cmdMapPtr;
     int numCmds = envPtr->numCommands;
     int codeDelta, codeLen, srcDelta, srcLen;
     int codeDeltaNext, codeLengthNext, srcDeltaNext, srcLengthNext;
 				/* The offsets in their respective byte
-				 * sequences where the next encoded offset
-				 * or length should go. */
+				 * sequences where the next encoded offset or
+				 * length should go. */
     int prevCodeOffset, prevSrcOffset, i;
 
     codeDeltaNext = codeLengthNext = srcDeltaNext = srcLengthNext = 0;
@@ -3345,7 +3326,7 @@ GetCmdLocEncodingSize(envPtr)
     for (i = 0;  i < numCmds;  i++) {
 	codeDelta = (mapPtr[i].codeOffset - prevCodeOffset);
 	if (codeDelta < 0) {
-	    panic("GetCmdLocEncodingSize: bad code offset");
+	    Tcl_Panic("GetCmdLocEncodingSize: bad code offset");
 	} else if (codeDelta <= 127) {
 	    codeDeltaNext++;
 	} else {
@@ -3355,7 +3336,7 @@ GetCmdLocEncodingSize(envPtr)
 
 	codeLen = mapPtr[i].numCodeBytes;
 	if (codeLen < 0) {
-	    panic("GetCmdLocEncodingSize: bad code length");
+	    Tcl_Panic("GetCmdLocEncodingSize: bad code length");
 	} else if (codeLen <= 127) {
 	    codeLengthNext++;
 	} else {
@@ -3372,7 +3353,7 @@ GetCmdLocEncodingSize(envPtr)
 
 	srcLen = mapPtr[i].numSrcBytes;
 	if (srcLen < 0) {
-	    panic("GetCmdLocEncodingSize: bad source length");
+	    Tcl_Panic("GetCmdLocEncodingSize: bad source length");
 	} else if (srcLen <= 127) {
 	    srcLengthNext++;
 	} else {
@@ -3388,8 +3369,8 @@ GetCmdLocEncodingSize(envPtr)
  *
  * EncodeCmdLocMap --
  *
- *	Encode the command location information for some compiled code into
- *	a ByteCode structure. The encoded command location map is stored as
+ *	Encode the command location information for some compiled code into a
+ *	ByteCode structure. The encoded command location map is stored as
  *	three adjacent byte sequences.
  *
  * Results:
@@ -3397,30 +3378,30 @@ GetCmdLocEncodingSize(envPtr)
  *	information.
  *
  * Side effects:
- *	The encoded information is stored into the block of memory headed
- *	by codePtr. Also records pointers to the start of the four byte
- *	sequences in fields in codePtr's ByteCode header structure.
+ *	The encoded information is stored into the block of memory headed by
+ *	codePtr. Also records pointers to the start of the four byte sequences
+ *	in fields in codePtr's ByteCode header structure.
  *
  *----------------------------------------------------------------------
  */
 
 static unsigned char *
-EncodeCmdLocMap(envPtr, codePtr, startPtr)
-     CompileEnv *envPtr;	/* Points to compilation environment
-				 * structure containing the CmdLocation
-				 * structure to encode. */
-     ByteCode *codePtr;		/* ByteCode in which to encode envPtr's
+EncodeCmdLocMap(
+    CompileEnv *envPtr,		/* Points to compilation environment structure
+				 * containing the CmdLocation structure to
+				 * encode. */
+    ByteCode *codePtr,		/* ByteCode in which to encode envPtr's
 				 * command location information. */
-     unsigned char *startPtr;	/* Points to the first byte in codePtr's
-				 * memory block where the location
-				 * information is to be stored. */
+    unsigned char *startPtr)	/* Points to the first byte in codePtr's
+				 * memory block where the location information
+				 * is to be stored. */
 {
     register CmdLocation *mapPtr = envPtr->cmdMapPtr;
     int numCmds = envPtr->numCommands;
     register unsigned char *p = startPtr;
     int codeDelta, codeLen, srcDelta, srcLen, prevOffset;
     register int i;
-    
+
     /*
      * Encode the code offset for each command as a sequence of deltas.
      */
@@ -3430,7 +3411,7 @@ EncodeCmdLocMap(envPtr, codePtr, startPtr)
     for (i = 0;  i < numCmds;  i++) {
 	codeDelta = (mapPtr[i].codeOffset - prevOffset);
 	if (codeDelta < 0) {
-	    panic("EncodeCmdLocMap: bad code offset");
+	    Tcl_Panic("EncodeCmdLocMap: bad code offset");
 	} else if (codeDelta <= 127) {
 	    TclStoreInt1AtPtr(codeDelta, p);
 	    p++;
@@ -3451,7 +3432,7 @@ EncodeCmdLocMap(envPtr, codePtr, startPtr)
     for (i = 0;  i < numCmds;  i++) {
 	codeLen = mapPtr[i].numCodeBytes;
 	if (codeLen < 0) {
-	    panic("EncodeCmdLocMap: bad code length");
+	    Tcl_Panic("EncodeCmdLocMap: bad code length");
 	} else if (codeLen <= 127) {
 	    TclStoreInt1AtPtr(codeLen, p);
 	    p++;
@@ -3491,7 +3472,7 @@ EncodeCmdLocMap(envPtr, codePtr, startPtr)
     for (i = 0;  i < numCmds;  i++) {
 	srcLen = mapPtr[i].numSrcBytes;
 	if (srcLen < 0) {
-	    panic("EncodeCmdLocMap: bad source length");
+	    Tcl_Panic("EncodeCmdLocMap: bad source length");
 	} else if (srcLen <= 127) {
 	    TclStoreInt1AtPtr(srcLen, p);
 	    p++;
@@ -3502,7 +3483,7 @@ EncodeCmdLocMap(envPtr, codePtr, startPtr)
 	    p += 4;
 	}
     }
-    
+
     return p;
 }
 
@@ -3512,32 +3493,153 @@ EncodeCmdLocMap(envPtr, codePtr, startPtr)
  *
  * TclPrintByteCodeObj --
  *
- *	This procedure prints ("disassembles") the instructions of a
- *	bytecode object to stdout.
+ *	This procedure prints ("disassembles") the instructions of a bytecode
+ *	object to stdout.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclPrintByteCodeObj(
+    Tcl_Interp *interp,		/* Used only for Tcl_GetStringFromObj. */
+    Tcl_Obj *objPtr)		/* The bytecode object to disassemble. */
+{
+    Tcl_Obj *bufPtr = TclDisassembleByteCodeObj(objPtr);
+
+    fprintf(stdout, "\n%s", TclGetString(bufPtr));
+    Tcl_DecrRefCount(bufPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclPrintInstruction --
+ *
+ *	This procedure prints ("disassembles") one instruction from a bytecode
+ *	object to stdout.
+ *
+ * Results:
+ *	Returns the length in bytes of the current instruiction.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclPrintInstruction(
+    ByteCode *codePtr,		/* Bytecode containing the instruction. */
+    unsigned char *pc)		/* Points to first byte of instruction. */
+{
+    Tcl_Obj *bufferObj;
+    int numBytes;
+
+    TclNewObj(bufferObj);
+    numBytes = FormatInstruction(codePtr, pc, bufferObj);
+    fprintf(stdout, "%s", TclGetString(bufferObj));
+    Tcl_DecrRefCount(bufferObj);
+    return numBytes;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclPrintObject --
+ *
+ *	This procedure prints up to a specified number of characters from the
+ *	argument Tcl object's string representation to a specified file.
  *
  * Results:
  *	None.
  *
  * Side effects:
+ *	Outputs characters to the specified file.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclPrintObject(
+    FILE *outFile,		/* The file to print the source to. */
+    Tcl_Obj *objPtr,		/* Points to the Tcl object whose string
+				 * representation should be printed. */
+    int maxChars)		/* Maximum number of chars to print. */
+{
+    char *bytes;
+    int length;
+
+    bytes = Tcl_GetStringFromObj(objPtr, &length);
+    TclPrintSource(outFile, bytes, TclMin(length, maxChars));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclPrintSource --
+ *
+ *	This procedure prints up to a specified number of characters from the
+ *	argument string to a specified file. It tries to produce legible
+ *	output by adding backslashes as necessary.
+ *
+ * Results:
  *	None.
  *
+ * Side effects:
+ *	Outputs characters to the specified file.
+ *
  *----------------------------------------------------------------------
  */
 
 void
-TclPrintByteCodeObj(interp, objPtr)
-    Tcl_Interp *interp;		/* Used only for Tcl_GetStringFromObj. */
-    Tcl_Obj *objPtr;		/* The bytecode object to disassemble. */
+TclPrintSource(
+    FILE *outFile,		/* The file to print the source to. */
+    const char *stringPtr,	/* The string to print. */
+    int maxChars)		/* Maximum number of chars to print. */
 {
-    ByteCode* codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
+    Tcl_Obj *bufferObj;
+
+    TclNewObj(bufferObj);
+    PrintSourceToObj(bufferObj, stringPtr, maxChars);
+    fprintf(outFile, "%s", TclGetString(bufferObj));
+    Tcl_DecrRefCount(bufferObj);
+}
+#endif /* TCL_COMPILE_DEBUG */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclDisassembleByteCodeObj --
+ *
+ *	Given an object which is of bytecode type, return a disassembled
+ *	version of the bytecode (in a new refcount 0 object). No guarantees
+ *	are made about the details of the contents of the result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclDisassembleByteCodeObj(
+    Tcl_Obj *objPtr)		/* The bytecode object to disassemble. */
+{
+    ByteCode *codePtr = objPtr->internalRep.twoPtrValue.ptr1;
     unsigned char *codeStart, *codeLimit, *pc;
     unsigned char *codeDeltaNext, *codeLengthNext;
     unsigned char *srcDeltaNext, *srcLengthNext;
     int codeOffset, codeLen, srcOffset, srcLen, numCmds, delta, i;
     Interp *iPtr = (Interp *) *codePtr->interpHandle;
+    Tcl_Obj *bufferObj;
+    char ptrBuf1[20], ptrBuf2[20];
 
+    TclNewObj(bufferObj);
     if (codePtr->refCount <= 0) {
-	return;			/* already freed */
+	return bufferObj;	/* Already freed. */
     }
 
     codeStart = codePtr->codeStart;
@@ -3548,62 +3650,70 @@ TclPrintByteCodeObj(interp, objPtr)
      * Print header lines describing the ByteCode.
      */
 
-    fprintf(stdout, "\nByteCode 0x%x, refCt %u, epoch %u, interp 0x%x (epoch %u)\n",
-	    (unsigned int) codePtr, codePtr->refCount,
-	    codePtr->compileEpoch, (unsigned int) iPtr,
+    sprintf(ptrBuf1, "%p", codePtr);
+    sprintf(ptrBuf2, "%p", iPtr);
+    Tcl_AppendPrintfToObj(bufferObj,
+	    "ByteCode 0x%s, refCt %u, epoch %u, interp 0x%s (epoch %u)\n",
+	    ptrBuf1, codePtr->refCount, codePtr->compileEpoch, ptrBuf2,
 	    iPtr->compileEpoch);
-    fprintf(stdout, "  Source ");
-    TclPrintSource(stdout, codePtr->source,
+    Tcl_AppendToObj(bufferObj, "  Source ", -1);
+    PrintSourceToObj(bufferObj, codePtr->source,
 	    TclMin(codePtr->numSrcBytes, 55));
-    fprintf(stdout, "\n  Cmds %d, src %d, inst %d, litObjs %u, aux %d, stkDepth %u, code/src %.2f\n",
+    Tcl_AppendPrintfToObj(bufferObj,
+	    "\n  Cmds %d, src %d, inst %d, litObjs %u, aux %d, stkDepth %u, code/src %.2f\n",
 	    numCmds, codePtr->numSrcBytes, codePtr->numCodeBytes,
 	    codePtr->numLitObjects, codePtr->numAuxDataItems,
 	    codePtr->maxStackDepth,
 #ifdef TCL_COMPILE_STATS
-	    (codePtr->numSrcBytes?
-	            ((float)codePtr->structureSize)/((float)codePtr->numSrcBytes) : 0.0));
-#else
-	    0.0);
+	    codePtr->numSrcBytes?
+		    codePtr->structureSize/(float)codePtr->numSrcBytes :
 #endif
+	    0.0);
+
 #ifdef TCL_COMPILE_STATS
-    fprintf(stdout,
-	    "  Code %u = header %u+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n",
-	    (unsigned int)codePtr->structureSize,
-	    (unsigned int)(sizeof(ByteCode) - (sizeof(size_t) + sizeof(Tcl_Time))),
+    Tcl_AppendPrintfToObj(bufferObj,
+	    "  Code %lu = header %lu+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n",
+	    (unsigned long) codePtr->structureSize,
+	    (unsigned long) (sizeof(ByteCode) - sizeof(size_t) - sizeof(Tcl_Time)),
 	    codePtr->numCodeBytes,
-	    (unsigned long)(codePtr->numLitObjects * sizeof(Tcl_Obj *)),
-	    (unsigned long)(codePtr->numExceptRanges * sizeof(ExceptionRange)),
-	    (unsigned long)(codePtr->numAuxDataItems * sizeof(AuxData)),
+	    (unsigned long) (codePtr->numLitObjects * sizeof(Tcl_Obj *)),
+	    (unsigned long) (codePtr->numExceptRanges*sizeof(ExceptionRange)),
+	    (unsigned long) (codePtr->numAuxDataItems * sizeof(AuxData)),
 	    codePtr->numCmdLocBytes);
 #endif /* TCL_COMPILE_STATS */
-    
+
     /*
      * If the ByteCode is the compiled body of a Tcl procedure, print
      * information about that procedure. Note that we don't know the
      * procedure's name since ByteCode's can be shared among procedures.
      */
-    
+
     if (codePtr->procPtr != NULL) {
 	Proc *procPtr = codePtr->procPtr;
 	int numCompiledLocals = procPtr->numCompiledLocals;
-	fprintf(stdout,
-	        "  Proc 0x%x, refCt %d, args %d, compiled locals %d\n",
-		(unsigned int) procPtr, procPtr->refCount, procPtr->numArgs,
+
+	sprintf(ptrBuf1, "%p", procPtr);
+	Tcl_AppendPrintfToObj(bufferObj,
+		"  Proc 0x%s, refCt %d, args %d, compiled locals %d\n",
+		ptrBuf1, procPtr->refCount, procPtr->numArgs,
 		numCompiledLocals);
 	if (numCompiledLocals > 0) {
 	    CompiledLocal *localPtr = procPtr->firstLocalPtr;
+
 	    for (i = 0;  i < numCompiledLocals;  i++) {
-		fprintf(stdout, "      slot %d%s%s%s%s%s%s", i, 
-			((localPtr->flags & VAR_SCALAR)?  ", scalar"  : ""),
-			((localPtr->flags & VAR_ARRAY)?  ", array"  : ""),
-			((localPtr->flags & VAR_LINK)?  ", link"  : ""),
-			((localPtr->flags & VAR_ARGUMENT)?  ", arg"  : ""),
-			((localPtr->flags & VAR_TEMPORARY)? ", temp" : ""),
-			((localPtr->flags & VAR_RESOLVED)? ", resolved" : ""));
+		Tcl_AppendPrintfToObj(bufferObj,
+			"      slot %d%s%s%s%s%s%s", i,
+			(localPtr->flags & (VAR_ARRAY|VAR_LINK)) ? "" : ", scalar",
+			(localPtr->flags & VAR_ARRAY) ? ", array" : "",
+			(localPtr->flags & VAR_LINK) ? ", link" : "",
+			(localPtr->flags & VAR_ARGUMENT) ? ", arg" : "",
+			(localPtr->flags & VAR_TEMPORARY) ? ", temp" : "",
+			(localPtr->flags & VAR_RESOLVED) ? ", resolved" : "");
 		if (TclIsVarTemporary(localPtr)) {
-		    fprintf(stdout,	"\n");
+		    Tcl_AppendToObj(bufferObj, "\n", -1);
 		} else {
-		    fprintf(stdout,	", \"%s\"\n", localPtr->name);
+		    Tcl_AppendPrintfToObj(bufferObj, ", \"%s\"\n",
+			    localPtr->name);
 		}
 		localPtr = localPtr->nextPtr;
 	    }
@@ -3615,58 +3725,60 @@ TclPrintByteCodeObj(interp, objPtr)
      */
 
     if (codePtr->numExceptRanges > 0) {
-	fprintf(stdout, "  Exception ranges %d, depth %d:\n",
-	        codePtr->numExceptRanges, codePtr->maxExceptDepth);
+	Tcl_AppendPrintfToObj(bufferObj, "  Exception ranges %d, depth %d:\n",
+		codePtr->numExceptRanges, codePtr->maxExceptDepth);
 	for (i = 0;  i < codePtr->numExceptRanges;  i++) {
 	    ExceptionRange *rangePtr = &(codePtr->exceptArrayPtr[i]);
-	    fprintf(stdout, "      %d: level %d, %s, pc %d-%d, ",
+
+	    Tcl_AppendPrintfToObj(bufferObj,
+		    "      %d: level %d, %s, pc %d-%d, ",
 		    i, rangePtr->nestingLevel,
-		    ((rangePtr->type == LOOP_EXCEPTION_RANGE)
-			    ? "loop" : "catch"),
+		    (rangePtr->type==LOOP_EXCEPTION_RANGE ? "loop" : "catch"),
 		    rangePtr->codeOffset,
 		    (rangePtr->codeOffset + rangePtr->numCodeBytes - 1));
 	    switch (rangePtr->type) {
 	    case LOOP_EXCEPTION_RANGE:
-		fprintf(stdout,	"continue %d, break %d\n",
-		        rangePtr->continueOffset, rangePtr->breakOffset);
+		Tcl_AppendPrintfToObj(bufferObj, "continue %d, break %d\n",
+			rangePtr->continueOffset, rangePtr->breakOffset);
 		break;
 	    case CATCH_EXCEPTION_RANGE:
-		fprintf(stdout,	"catch %d\n", rangePtr->catchOffset);
+		Tcl_AppendPrintfToObj(bufferObj, "catch %d\n",
+			rangePtr->catchOffset);
 		break;
 	    default:
-		panic("TclPrintByteCodeObj: bad ExceptionRange type %d\n",
-		        rangePtr->type);
+		Tcl_Panic("TclDisassembleByteCodeObj: bad ExceptionRange type %d",
+			rangePtr->type);
 	    }
 	}
     }
-    
+
     /*
-     * If there were no commands (e.g., an expression or an empty string
-     * was compiled), just print all instructions and return.
+     * If there were no commands (e.g., an expression or an empty string was
+     * compiled), just print all instructions and return.
      */
 
     if (numCmds == 0) {
 	pc = codeStart;
 	while (pc < codeLimit) {
-	    fprintf(stdout, "    ");
-	    pc += TclPrintInstruction(codePtr, pc);
+	    Tcl_AppendToObj(bufferObj, "    ", -1);
+	    pc += FormatInstruction(codePtr, pc, bufferObj);
 	}
-	return;
+	return bufferObj;
     }
-    
+
     /*
-     * Print table showing the code offset, source offset, and source
-     * length for each command. These are encoded as a sequence of bytes.
+     * Print table showing the code offset, source offset, and source length
+     * for each command. These are encoded as a sequence of bytes.
      */
 
-    fprintf(stdout, "  Commands %d:", numCmds);
+    Tcl_AppendPrintfToObj(bufferObj, "  Commands %d:", numCmds);
     codeDeltaNext = codePtr->codeDeltaStart;
     codeLengthNext = codePtr->codeLengthStart;
-    srcDeltaNext  = codePtr->srcDeltaStart;
+    srcDeltaNext = codePtr->srcDeltaStart;
     srcLengthNext = codePtr->srcLengthStart;
     codeOffset = srcOffset = 0;
     for (i = 0;  i < numCmds;  i++) {
-	if ((unsigned int) (*codeDeltaNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *codeDeltaNext == (unsigned) 0xFF) {
 	    codeDeltaNext++;
 	    delta = TclGetInt4AtPtr(codeDeltaNext);
 	    codeDeltaNext += 4;
@@ -3676,7 +3788,7 @@ TclPrintByteCodeObj(interp, objPtr)
 	}
 	codeOffset += delta;
 
-	if ((unsigned int) (*codeLengthNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *codeLengthNext == (unsigned) 0xFF) {
 	    codeLengthNext++;
 	    codeLen = TclGetInt4AtPtr(codeLengthNext);
 	    codeLengthNext += 4;
@@ -3684,8 +3796,8 @@ TclPrintByteCodeObj(interp, objPtr)
 	    codeLen = TclGetInt1AtPtr(codeLengthNext);
 	    codeLengthNext++;
 	}
-	
-	if ((unsigned int) (*srcDeltaNext) == (unsigned int) 0xFF) {
+
+	if ((unsigned) *srcDeltaNext == (unsigned) 0xFF) {
 	    srcDeltaNext++;
 	    delta = TclGetInt4AtPtr(srcDeltaNext);
 	    srcDeltaNext += 4;
@@ -3695,7 +3807,7 @@ TclPrintByteCodeObj(interp, objPtr)
 	}
 	srcOffset += delta;
 
-	if ((unsigned int) (*srcLengthNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *srcLengthNext == (unsigned) 0xFF) {
 	    srcLengthNext++;
 	    srcLen = TclGetInt4AtPtr(srcLengthNext);
 	    srcLengthNext += 4;
@@ -3703,29 +3815,29 @@ TclPrintByteCodeObj(interp, objPtr)
 	    srcLen = TclGetInt1AtPtr(srcLengthNext);
 	    srcLengthNext++;
 	}
-	
-	fprintf(stdout,	"%s%4d: pc %d-%d, src %d-%d",
+
+	Tcl_AppendPrintfToObj(bufferObj, "%s%4d: pc %d-%d, src %d-%d",
 		((i % 2)? "   	" : "\n   "),
 		(i+1), codeOffset, (codeOffset + codeLen - 1),
 		srcOffset, (srcOffset + srcLen - 1));
     }
     if (numCmds > 0) {
-	fprintf(stdout,	"\n");
+	Tcl_AppendToObj(bufferObj, "\n", -1);
     }
-    
+
     /*
-     * Print each instruction. If the instruction corresponds to the start
-     * of a command, print the command's source. Note that we don't need
-     * the code length here.
+     * Print each instruction. If the instruction corresponds to the start of
+     * a command, print the command's source. Note that we don't need the code
+     * length here.
      */
 
     codeDeltaNext = codePtr->codeDeltaStart;
-    srcDeltaNext  = codePtr->srcDeltaStart;
+    srcDeltaNext = codePtr->srcDeltaStart;
     srcLengthNext = codePtr->srcLengthStart;
     codeOffset = srcOffset = 0;
     pc = codeStart;
     for (i = 0;  i < numCmds;  i++) {
-	if ((unsigned int) (*codeDeltaNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *codeDeltaNext == (unsigned) 0xFF) {
 	    codeDeltaNext++;
 	    delta = TclGetInt4AtPtr(codeDeltaNext);
 	    codeDeltaNext += 4;
@@ -3735,7 +3847,7 @@ TclPrintByteCodeObj(interp, objPtr)
 	}
 	codeOffset += delta;
 
-	if ((unsigned int) (*srcDeltaNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *srcDeltaNext == (unsigned) 0xFF) {
 	    srcDeltaNext++;
 	    delta = TclGetInt4AtPtr(srcDeltaNext);
 	    srcDeltaNext += 4;
@@ -3745,7 +3857,7 @@ TclPrintByteCodeObj(interp, objPtr)
 	}
 	srcOffset += delta;
 
-	if ((unsigned int) (*srcLengthNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *srcLengthNext == (unsigned) 0xFF) {
 	    srcLengthNext++;
 	    srcLen = TclGetInt4AtPtr(srcLengthNext);
 	    srcLengthNext += 4;
@@ -3757,16 +3869,16 @@ TclPrintByteCodeObj(interp, objPtr)
 	/*
 	 * Print instructions before command i.
 	 */
-	
+
 	while ((pc-codeStart) < codeOffset) {
-	    fprintf(stdout, "    ");
-	    pc += TclPrintInstruction(codePtr, pc);
+	    Tcl_AppendToObj(bufferObj, "    ", -1);
+	    pc += FormatInstruction(codePtr, pc, bufferObj);
 	}
 
-	fprintf(stdout, "  Command %d: ", (i+1));
-	TclPrintSource(stdout, (codePtr->source + srcOffset),
-	        TclMin(srcLen, 55));
-	fprintf(stdout, "\n");
+	Tcl_AppendPrintfToObj(bufferObj, "  Command %d: ", i+1);
+	PrintSourceToObj(bufferObj, (codePtr->source + srcOffset),
+		TclMin(srcLen, 55));
+	Tcl_AppendToObj(bufferObj, "\n", -1);
     }
     if (pc < codeLimit) {
 	/*
@@ -3774,225 +3886,201 @@ TclPrintByteCodeObj(interp, objPtr)
 	 */
 
 	while (pc < codeLimit) {
-	    fprintf(stdout, "    ");
-	    pc += TclPrintInstruction(codePtr, pc);
+	    Tcl_AppendToObj(bufferObj, "    ", -1);
+	    pc += FormatInstruction(codePtr, pc, bufferObj);
 	}
     }
+    return bufferObj;
 }
-#endif /* TCL_COMPILE_DEBUG */
 
 /*
  *----------------------------------------------------------------------
  *
- * TclPrintInstruction --
- *
- *	This procedure prints ("disassembles") one instruction from a
- *	bytecode object to stdout.
- *
- * Results:
- *	Returns the length in bytes of the current instruiction.
+ * FormatInstruction --
  *
- * Side effects:
- *	None.
+ *	Appends a representation of a bytecode instruction to a Tcl_Obj.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclPrintInstruction(codePtr, pc)
-    ByteCode* codePtr;		/* Bytecode containing the instruction. */
-    unsigned char *pc;		/* Points to first byte of instruction. */
+static int
+FormatInstruction(
+    ByteCode *codePtr,		/* Bytecode containing the instruction. */
+    unsigned char *pc,		/* Points to first byte of instruction. */
+    Tcl_Obj *bufferObj)		/* Object to append instruction info to. */
 {
     Proc *procPtr = codePtr->procPtr;
     unsigned char opCode = *pc;
     register InstructionDesc *instDesc = &tclInstructionTable[opCode];
     unsigned char *codeStart = codePtr->codeStart;
-    unsigned int pcOffset = (pc - codeStart);
-    int opnd, i, j;
-    
-    fprintf(stdout, "(%u) %s ", pcOffset, instDesc->name);
+    unsigned pcOffset = pc - codeStart;
+    int opnd = 0, i, j, numBytes = 1;
+    int localCt = procPtr ? procPtr->numCompiledLocals : 0;
+    CompiledLocal *localPtr = procPtr ? procPtr->firstLocalPtr : NULL;
+    char suffixBuffer[128];	/* Additional info to print after main opcode
+				 * and immediates. */
+    char *suffixSrc = NULL;
+    Tcl_Obj *suffixObj = NULL;
+    AuxData *auxPtr = NULL;
+
+    suffixBuffer[0] = '\0';
+    Tcl_AppendPrintfToObj(bufferObj, "(%u) %s ", pcOffset, instDesc->name);
     for (i = 0;  i < instDesc->numOperands;  i++) {
 	switch (instDesc->opTypes[i]) {
 	case OPERAND_INT1:
-	    opnd = TclGetInt1AtPtr(pc+1+i);
-	    if ((i == 0) && ((opCode == INST_JUMP1)
-			     || (opCode == INST_JUMP_TRUE1)
-		             || (opCode == INST_JUMP_FALSE1))) {
-		fprintf(stdout, "%d  	# pc %u", opnd, (pcOffset + opnd));
-	    } else {
-		fprintf(stdout, "%d", opnd);
+	    opnd = TclGetInt1AtPtr(pc+numBytes); numBytes++;
+	    if (opCode == INST_JUMP1 || opCode == INST_JUMP_TRUE1
+		    || opCode == INST_JUMP_FALSE1) {
+		sprintf(suffixBuffer, "pc %u", pcOffset+opnd);
 	    }
+	    Tcl_AppendPrintfToObj(bufferObj, "%+d ", opnd);
 	    break;
 	case OPERAND_INT4:
-	    opnd = TclGetInt4AtPtr(pc+1+i);
-	    if ((i == 0) && ((opCode == INST_JUMP4)
-			     || (opCode == INST_JUMP_TRUE4)
-		             || (opCode == INST_JUMP_FALSE4))) {
-		fprintf(stdout, "%d  	# pc %u", opnd, (pcOffset + opnd));
-	    } else {
-		fprintf(stdout, "%d", opnd);
+	    opnd = TclGetInt4AtPtr(pc+numBytes); numBytes += 4;
+	    if (opCode == INST_JUMP4 || opCode == INST_JUMP_TRUE4
+		    || opCode == INST_JUMP_FALSE4) {
+		sprintf(suffixBuffer, "pc %u", pcOffset+opnd);
+	    } else if (opCode == INST_START_CMD) {
+		sprintf(suffixBuffer, "next cmd at pc %u", pcOffset+opnd);
 	    }
+	    Tcl_AppendPrintfToObj(bufferObj, "%+d ", opnd);
 	    break;
 	case OPERAND_UINT1:
-	    opnd = TclGetUInt1AtPtr(pc+1+i);
-	    if ((i == 0) && (opCode == INST_PUSH1)) {
-		fprintf(stdout, "%u  	# ", (unsigned int) opnd);
-		TclPrintObject(stdout, codePtr->objArrayPtr[opnd], 40);
-	    } else if ((i == 0) && ((opCode == INST_LOAD_SCALAR1)
-				    || (opCode == INST_LOAD_ARRAY1)
-				    || (opCode == INST_STORE_SCALAR1)
-				    || (opCode == INST_STORE_ARRAY1))) {
-		int localCt = procPtr->numCompiledLocals;
-		CompiledLocal *localPtr = procPtr->firstLocalPtr;
-		if (opnd >= localCt) {
-		    panic("TclPrintInstruction: bad local var index %u (%u locals)\n",
-			     (unsigned int) opnd, localCt);
-		    return instDesc->numBytes;
-		}
-		for (j = 0;  j < opnd;  j++) {
-		    localPtr = localPtr->nextPtr;
-		}
-		if (TclIsVarTemporary(localPtr)) {
-		    fprintf(stdout, "%u	# temp var %u",
-			    (unsigned int) opnd, (unsigned int) opnd);
-		} else {
-		    fprintf(stdout, "%u	# var ", (unsigned int) opnd);
-		    TclPrintSource(stdout, localPtr->name, 40);
-		}
-	    } else {
-		fprintf(stdout, "%u ", (unsigned int) opnd);
+	    opnd = TclGetUInt1AtPtr(pc+numBytes); numBytes++;
+	    if (opCode == INST_PUSH1) {
+		suffixObj = codePtr->objArrayPtr[opnd];
 	    }
+	    Tcl_AppendPrintfToObj(bufferObj, "%u ", (unsigned) opnd);
 	    break;
+	case OPERAND_AUX4:
 	case OPERAND_UINT4:
-	    opnd = TclGetUInt4AtPtr(pc+1+i);
+	    opnd = TclGetUInt4AtPtr(pc+numBytes); numBytes += 4;
 	    if (opCode == INST_PUSH4) {
-		fprintf(stdout, "%u  	# ", opnd);
-		TclPrintObject(stdout, codePtr->objArrayPtr[opnd], 40);
-	    } else if ((i == 0) && ((opCode == INST_LOAD_SCALAR4)
-				    || (opCode == INST_LOAD_ARRAY4)
-				    || (opCode == INST_STORE_SCALAR4)
-				    || (opCode == INST_STORE_ARRAY4))) {
-		int localCt = procPtr->numCompiledLocals;
-		CompiledLocal *localPtr = procPtr->firstLocalPtr;
+		suffixObj = codePtr->objArrayPtr[opnd];
+	    } else if (opCode == INST_START_CMD && opnd != 1) {
+		sprintf(suffixBuffer+strlen(suffixBuffer),
+			", %u cmds start here", opnd);
+	    }
+	    Tcl_AppendPrintfToObj(bufferObj, "%u ", (unsigned) opnd);
+	    if (instDesc->opTypes[i] == OPERAND_AUX4) {
+		auxPtr = &codePtr->auxDataArrayPtr[opnd];
+	    }
+	    break;
+	case OPERAND_IDX4:
+	    opnd = TclGetInt4AtPtr(pc+numBytes); numBytes += 4;
+	    if (opnd >= -1) {
+		Tcl_AppendPrintfToObj(bufferObj, "%d ", opnd);
+	    } else if (opnd == -2) {
+		Tcl_AppendPrintfToObj(bufferObj, "end ");
+	    } else {
+		Tcl_AppendPrintfToObj(bufferObj, "end-%d ", -2-opnd);
+	    }
+	    break;
+	case OPERAND_LVT1:
+	    opnd = TclGetUInt1AtPtr(pc+numBytes);
+	    numBytes++;
+	    goto printLVTindex;
+	case OPERAND_LVT4:
+	    opnd = TclGetUInt4AtPtr(pc+numBytes);
+	    numBytes += 4;
+	printLVTindex:
+	    if (localPtr != NULL) {
 		if (opnd >= localCt) {
-		    panic("TclPrintInstruction: bad local var index %u (%u locals)\n",
-			     (unsigned int) opnd, localCt);
-		    return instDesc->numBytes;
+		    Tcl_Panic("FormatInstruction: bad local var index %u (%u locals)",
+			    (unsigned) opnd, localCt);
 		}
 		for (j = 0;  j < opnd;  j++) {
 		    localPtr = localPtr->nextPtr;
 		}
 		if (TclIsVarTemporary(localPtr)) {
-		    fprintf(stdout, "%u	# temp var %u",
-			    (unsigned int) opnd, (unsigned int) opnd);
+		    sprintf(suffixBuffer, "temp var %u", (unsigned) opnd);
 		} else {
-		    fprintf(stdout, "%u	# var ", (unsigned int) opnd);
-		    TclPrintSource(stdout, localPtr->name, 40);
+		    sprintf(suffixBuffer, "var ");
+		    suffixSrc = localPtr->name;
 		}
-	    } else {
-		fprintf(stdout, "%u ", (unsigned int) opnd);
 	    }
+	    Tcl_AppendPrintfToObj(bufferObj, "%%v%u ", (unsigned) opnd);
 	    break;
 	case OPERAND_NONE:
 	default:
 	    break;
 	}
     }
-    fprintf(stdout, "\n");
-    return instDesc->numBytes;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclPrintObject --
- *
- *	This procedure prints up to a specified number of characters from
- *	the argument Tcl object's string representation to a specified file.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Outputs characters to the specified file.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclPrintObject(outFile, objPtr, maxChars)
-    FILE *outFile;		/* The file to print the source to. */
-    Tcl_Obj *objPtr;		/* Points to the Tcl object whose string
-				 * representation should be printed. */
-    int maxChars;		/* Maximum number of chars to print. */
-{
-    char *bytes;
-    int length;
-    
-    bytes = Tcl_GetStringFromObj(objPtr, &length);
-    TclPrintSource(outFile, bytes, TclMin(length, maxChars));
+    if (suffixObj) {
+	char *bytes;
+	int length;
+
+	Tcl_AppendToObj(bufferObj, "\t# ", -1);
+	bytes = Tcl_GetStringFromObj(codePtr->objArrayPtr[opnd], &length);
+	PrintSourceToObj(bufferObj, bytes, TclMin(length, 40));
+    } else if (suffixBuffer[0]) {
+	Tcl_AppendPrintfToObj(bufferObj, "\t# %s", suffixBuffer);
+	if (suffixSrc) {
+	    PrintSourceToObj(bufferObj, suffixSrc, 40);
+	}
+    }
+    Tcl_AppendToObj(bufferObj, "\n", -1);
+    if (auxPtr && auxPtr->type->printProc) {
+	Tcl_AppendToObj(bufferObj, "\t\t[", -1);
+	auxPtr->type->printProc(auxPtr->clientData, bufferObj, codePtr,
+		pcOffset);
+	Tcl_AppendToObj(bufferObj, "]\n", -1);
+    }
+    return numBytes;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclPrintSource --
- *
- *	This procedure prints up to a specified number of characters from
- *	the argument string to a specified file. It tries to produce legible
- *	output by adding backslashes as necessary.
- *
- * Results:
- *	None.
+ * PrintSourceToObj --
  *
- * Side effects:
- *	Outputs characters to the specified file.
+ *	Appends a quoted representation of a string to a Tcl_Obj.
  *
  *----------------------------------------------------------------------
  */
 
-void
-TclPrintSource(outFile, string, maxChars)
-    FILE *outFile;		/* The file to print the source to. */
-    CONST char *string;		/* The string to print. */
-    int maxChars;		/* Maximum number of chars to print. */
+static void
+PrintSourceToObj(
+    Tcl_Obj *appendObj,		/* The object to print the source to. */
+    const char *stringPtr,	/* The string to print. */
+    int maxChars)		/* Maximum number of chars to print. */
 {
-    register CONST char *p;
+    register const char *p;
     register int i = 0;
 
-    if (string == NULL) {
-	fprintf(outFile, "\"\"");
+    if (stringPtr == NULL) {
+	Tcl_AppendToObj(appendObj, "\"\"", -1);
 	return;
     }
 
-    fprintf(outFile, "\"");
-    p = string;
+    Tcl_AppendToObj(appendObj, "\"", -1);
+    p = stringPtr;
     for (;  (*p != '\0') && (i < maxChars);  p++, i++) {
 	switch (*p) {
-	    case '"':
-		fprintf(outFile, "\\\"");
-		continue;
-	    case '\f':
-		fprintf(outFile, "\\f");
-		continue;
-	    case '\n':
-		fprintf(outFile, "\\n");
-		continue;
-            case '\r':
-		fprintf(outFile, "\\r");
-		continue;
-	    case '\t':
-		fprintf(outFile, "\\t");
-		continue;
-            case '\v':
-		fprintf(outFile, "\\v");
-		continue;
-	    default:
-		fprintf(outFile, "%c", *p);
-		continue;
+	case '"':
+	    Tcl_AppendToObj(appendObj, "\\\"", -1);
+	    continue;
+	case '\f':
+	    Tcl_AppendToObj(appendObj, "\\f", -1);
+	    continue;
+	case '\n':
+	    Tcl_AppendToObj(appendObj, "\\n", -1);
+	    continue;
+	case '\r':
+	    Tcl_AppendToObj(appendObj, "\\r", -1);
+	    continue;
+	case '\t':
+	    Tcl_AppendToObj(appendObj, "\\t", -1);
+	    continue;
+	case '\v':
+	    Tcl_AppendToObj(appendObj, "\\v", -1);
+	    continue;
+	default:
+	    Tcl_AppendPrintfToObj(appendObj, "%c", *p);
+	    continue;
 	}
     }
-    fprintf(outFile, "\"");
+    Tcl_AppendToObj(appendObj, "\"", -1);
 }
 
 #ifdef TCL_COMPILE_STATS
@@ -4010,41 +4098,42 @@ TclPrintSource(outFile, string, maxChars)
  *
  * Side effects:
  *	Accumulates aggregate code-related statistics in the interpreter's
- *	ByteCodeStats structure. Records statistics specific to a ByteCode
- *	in its ByteCode structure.
+ *	ByteCodeStats structure. Records statistics specific to a ByteCode in
+ *	its ByteCode structure.
  *
  *----------------------------------------------------------------------
  */
 
 void
-RecordByteCodeStats(codePtr)
-    ByteCode *codePtr;		/* Points to ByteCode structure with info
+RecordByteCodeStats(
+    ByteCode *codePtr)		/* Points to ByteCode structure with info
 				 * to add to accumulated statistics. */
 {
     Interp *iPtr = (Interp *) *codePtr->interpHandle;
-    register ByteCodeStats *statsPtr = &(iPtr->stats);
+    register ByteCodeStats *statsPtr;
 
     if (iPtr == NULL) {
 	/* Avoid segfaulting in case we're called in a deleted interp */
 	return;
     }
+    statsPtr = &(iPtr->stats);
 
     statsPtr->numCompilations++;
-    statsPtr->totalSrcBytes        += (double) codePtr->numSrcBytes;
-    statsPtr->totalByteCodeBytes   += (double) codePtr->structureSize;
-    statsPtr->currentSrcBytes      += (double) codePtr->numSrcBytes;
+    statsPtr->totalSrcBytes += (double) codePtr->numSrcBytes;
+    statsPtr->totalByteCodeBytes += (double) codePtr->structureSize;
+    statsPtr->currentSrcBytes += (double) codePtr->numSrcBytes;
     statsPtr->currentByteCodeBytes += (double) codePtr->structureSize;
-    
+
     statsPtr->srcCount[TclLog2(codePtr->numSrcBytes)]++;
     statsPtr->byteCodeCount[TclLog2((int)(codePtr->structureSize))]++;
 
-    statsPtr->currentInstBytes   += (double) codePtr->numCodeBytes;
-    statsPtr->currentLitBytes    +=
-	    (double) (codePtr->numLitObjects * sizeof(Tcl_Obj *)); 
-    statsPtr->currentExceptBytes +=
-	    (double) (codePtr->numExceptRanges * sizeof(ExceptionRange));
-    statsPtr->currentAuxBytes    +=
-            (double) (codePtr->numAuxDataItems * sizeof(AuxData));
+    statsPtr->currentInstBytes += (double) codePtr->numCodeBytes;
+    statsPtr->currentLitBytes += (double)
+	    codePtr->numLitObjects * sizeof(Tcl_Obj *);
+    statsPtr->currentExceptBytes += (double)
+	    codePtr->numExceptRanges * sizeof(ExceptionRange);
+    statsPtr->currentAuxBytes += (double)
+	    codePtr->numAuxDataItems * sizeof(AuxData);
     statsPtr->currentCmdMapBytes += (double) codePtr->numCmdLocBytes;
 }
 #endif /* TCL_COMPILE_STATS */
@@ -4056,4 +4145,3 @@ RecordByteCodeStats(codePtr)
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclCompile.h b/generic/tclCompile.h
index 31c1b94..c035a03 100644
--- a/generic/tclCompile.h
+++ b/generic/tclCompile.h
@@ -3,24 +3,19 @@
  *
  * Copyright (c) 1996-1998 Sun Microsystems, Inc.
  * Copyright (c) 1998-2000 by Scriptics Corporation.
- * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+ * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
  * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #ifndef _TCLCOMPILATION
 #define _TCLCOMPILATION 1
 
-#ifndef _TCLINT
 #include "tclInt.h"
-#endif /* _TCLINT */
 
-#ifdef BUILD_tcl
-# undef TCL_STORAGE_CLASS
-# define TCL_STORAGE_CLASS DLLEXPORT
-#endif
+struct ByteCode;		/* Forward declaration. */
 
 /*
  *------------------------------------------------------------------------
@@ -39,10 +34,8 @@
  * This variable is linked to the Tcl variable "tcl_traceCompile".
  */
 
-extern int 		tclTraceCompile;
-#endif
+MODULE_SCOPE int 	tclTraceCompile;
 
-#ifdef TCL_COMPILE_DEBUG
 /*
  * Variable that controls whether execution tracing is enabled and, if so,
  * what level of tracing is desired:
@@ -53,9 +46,9 @@ extern int 		tclTraceCompile;
  * This variable is linked to the Tcl variable "tcl_traceExec".
  */
 
-extern int 		tclTraceExec;
+MODULE_SCOPE int 	tclTraceExec;
 #endif
-
+
 /*
  *------------------------------------------------------------------------
  * Data structures related to compilation.
@@ -63,54 +56,55 @@ extern int 		tclTraceExec;
  */
 
 /*
- * The structure used to implement Tcl "exceptions" (exceptional returns):
- * for example, those generated in loops by the break and continue commands,
- * and those generated by scripts and caught by the catch command. This
- * ExceptionRange structure describes a range of code (e.g., a loop body),
- * the kind of exceptions (e.g., a break or continue) that might occur, and
- * the PC offsets to jump to if a matching exception does occur. Exception
- * ranges can nest so this structure includes a nesting level that is used
- * at runtime to find the closest exception range surrounding a PC. For
- * example, when a break command is executed, the ExceptionRange structure
- * for the most deeply nested loop, if any, is found and used. These
- * structures are also generated for the "next" subcommands of for loops
- * since a break there terminates the for command. This means a for command
- * actually generates two LoopInfo structures.
+ * The structure used to implement Tcl "exceptions" (exceptional returns): for
+ * example, those generated in loops by the break and continue commands, and
+ * those generated by scripts and caught by the catch command. This
+ * ExceptionRange structure describes a range of code (e.g., a loop body), the
+ * kind of exceptions (e.g., a break or continue) that might occur, and the PC
+ * offsets to jump to if a matching exception does occur. Exception ranges can
+ * nest so this structure includes a nesting level that is used at runtime to
+ * find the closest exception range surrounding a PC. For example, when a
+ * break command is executed, the ExceptionRange structure for the most deeply
+ * nested loop, if any, is found and used. These structures are also generated
+ * for the "next" subcommands of for loops since a break there terminates the
+ * for command. This means a for command actually generates two LoopInfo
+ * structures.
  */
 
 typedef enum {
-    LOOP_EXCEPTION_RANGE,	/* Exception's range is part of a loop.
-				 * Break and continue "exceptions" cause
-				 * jumps to appropriate PC offsets. */
-    CATCH_EXCEPTION_RANGE	/* Exception's range is controlled by a
-				 * catch command. Errors in the range cause
-				 * a jump to a catch PC offset. */
+    LOOP_EXCEPTION_RANGE,	/* Exception's range is part of a loop. Break
+				 * and continue "exceptions" cause jumps to
+				 * appropriate PC offsets. */
+    CATCH_EXCEPTION_RANGE	/* Exception's range is controlled by a catch
+				 * command. Errors in the range cause a jump
+				 * to a catch PC offset. */
 } ExceptionRangeType;
 
 typedef struct ExceptionRange {
     ExceptionRangeType type;	/* The kind of ExceptionRange. */
-    int nestingLevel;		/* Static depth of the exception range.
-				 * Used to find the most deeply-nested
-				 * range surrounding a PC at runtime. */
-    int codeOffset;		/* Offset of the first instruction byte of
-				 * the code range. */
+    int nestingLevel;		/* Static depth of the exception range. Used
+				 * to find the most deeply-nested range
+				 * surrounding a PC at runtime. */
+    int codeOffset;		/* Offset of the first instruction byte of the
+				 * code range. */
     int numCodeBytes;		/* Number of bytes in the code range. */
     int breakOffset;		/* If LOOP_EXCEPTION_RANGE, the target PC
 				 * offset for a break command in the range. */
     int continueOffset;		/* If LOOP_EXCEPTION_RANGE and not -1, the
 				 * target PC offset for a continue command in
-				 * the code range. Otherwise, ignore this range
-				 * when processing a continue command. */
+				 * the code range. Otherwise, ignore this
+				 * range when processing a continue
+				 * command. */
     int catchOffset;		/* If a CATCH_EXCEPTION_RANGE, the target PC
 				 * offset for any "exception" in range. */
 } ExceptionRange;
 
 /*
  * Structure used to map between instruction pc and source locations. It
- * defines for each compiled Tcl command its code's starting offset and 
- * its source's starting offset and length. Note that the code offset
- * increases monotonically: that is, the table is sorted in code offset
- * order. The source offset is not monotonic.
+ * defines for each compiled Tcl command its code's starting offset and its
+ * source's starting offset and length. Note that the code offset increases
+ * monotonically: that is, the table is sorted in code offset order. The
+ * source offset is not monotonic.
  */
 
 typedef struct CmdLocation {
@@ -120,80 +114,90 @@ typedef struct CmdLocation {
     int numSrcBytes;		/* Number of command source chars. */
 } CmdLocation;
 
-#ifdef TCL_TIP280
 /*
  * TIP #280
- * Structure to record additional location information for byte code.
- * This information is internal and not saved. I.e. tbcload'ed code
- * will not have this information. It records the lines for all words
- * of all commands found in the byte code. The association with a
- * ByteCode structure BC is done through the 'lineBCPtr' HashTable in
- * Interp, keyed by the address of BC. Also recorded is information
- * coming from the context, i.e. type of the frame and associated
- * information, like the path of a sourced file.
+ * Structure to record additional location information for byte code. This
+ * information is internal and not saved. i.e. tbcload'ed code will not have
+ * this information. It records the lines for all words of all commands found
+ * in the byte code. The association with a ByteCode structure BC is done
+ * through the 'lineBCPtr' HashTable in Interp, keyed by the address of BC.
+ * Also recorded is information coming from the context, i.e. type of the
+ * frame and associated information, like the path of a sourced file.
  */
 
 typedef struct ECL {
-  int  srcOffset; /* cmd location to find the entry */
-  int  nline;     /* Number of words in the command */
-  int* line;      /* line information for all words in the command */
-  int** next;     /* Transient information during compile, ICL tracking */
+    int srcOffset;		/* Command location to find the entry. */
+    int nline;                  /* Number of words in the command */
+    int *line;			/* Line information for all words in the
+				 * command. */
+    int** next;                 /* Transient information used by the compiler
+				 * for tracking of hidden continuation
+				 * lines. */
 } ECL;
 
 typedef struct ExtCmdLoc {
-  int      type;  /* Context type */
-  Tcl_Obj* path;  /* Path of the sourced file the command is in */
-  ECL*     loc;   /* Command word locations (lines) */
-  int      nloc;  /* Number of allocated entries in 'loc' */
-  int      nuloc; /* Number of used entries in 'loc' */
-  Tcl_HashTable litInfo; /* Indexed by bytecode 'PC', to have the
-			  * information accessible per command and
-			  * argument, not per whole bytecode. Value is
-			  * index of command in 'loc', giving us the
-			  * literals to associate with line
-			  * information as command argument, see
-			  * TclArgumentBCEnter() */
+    int type;			/* Context type. */
+    int start;                  /* Starting line for compiled script. Needed
+				 * for the extended recompile check in
+				 * TclCompEvalObj. */
+
+    Tcl_Obj *path;		/* Path of the sourced file the command is
+				 * in. */
+    ECL *loc;			/* Command word locations (lines). */
+    int nloc;			/* Number of allocated entries in 'loc'. */
+    int nuloc;			/* Number of used entries in 'loc'. */
+    Tcl_HashTable litInfo;      /* Indexed by bytecode 'PC', to have the
+				 * information accessible per command and
+				 * argument, not per whole bytecode. Value is
+				 * index of command in 'loc', giving us the
+				 * literals to associate with line information
+				 * as command argument, see
+				 * TclArgumentBCEnter() */
 } ExtCmdLoc;
-#endif
 
 /*
- * CompileProcs need the ability to record information during compilation
- * that can be used by bytecode instructions during execution. The AuxData
- * structure provides this "auxiliary data" mechanism. An arbitrary number
- * of these structures can be stored in the ByteCode record (during
- * compilation they are stored in a CompileEnv structure). Each AuxData
- * record holds one word of client-specified data (often a pointer) and is
- * given an index that instructions can later use to look up the structure
- * and its data.
+ * CompileProcs need the ability to record information during compilation that
+ * can be used by bytecode instructions during execution. The AuxData
+ * structure provides this "auxiliary data" mechanism. An arbitrary number of
+ * these structures can be stored in the ByteCode record (during compilation
+ * they are stored in a CompileEnv structure). Each AuxData record holds one
+ * word of client-specified data (often a pointer) and is given an index that
+ * instructions can later use to look up the structure and its data.
  *
  * The following definitions declare the types of procedures that are called
  * to duplicate or free this auxiliary data when the containing ByteCode
- * objects are duplicated and freed. Pointers to these procedures are kept
- * in the AuxData structure.
+ * objects are duplicated and freed. Pointers to these procedures are kept in
+ * the AuxData structure.
  */
 
-typedef ClientData (AuxDataDupProc)  _ANSI_ARGS_((ClientData clientData));
-typedef void       (AuxDataFreeProc) _ANSI_ARGS_((ClientData clientData));
+typedef ClientData (AuxDataDupProc)  (ClientData clientData);
+typedef void       (AuxDataFreeProc) (ClientData clientData);
+typedef void	   (AuxDataPrintProc)(ClientData clientData,
+			    Tcl_Obj *appendObj, struct ByteCode *codePtr,
+			    unsigned int pcOffset);
 
 /*
  * We define a separate AuxDataType struct to hold type-related information
  * for the AuxData structure. This separation makes it possible for clients
- * outside of the TCL core to manipulate (in a limited fashion!) AuxData;
- * for example, it makes it possible to pickle and unpickle AuxData structs.
+ * outside of the TCL core to manipulate (in a limited fashion!) AuxData; for
+ * example, it makes it possible to pickle and unpickle AuxData structs.
  */
 
 typedef struct AuxDataType {
-    char *name;					/* the name of the type. Types can be
-                                 * registered and found by name */
-    AuxDataDupProc *dupProc;	/* Callback procedure to invoke when the
-                                 * aux data is duplicated (e.g., when the
-                                 * ByteCode structure containing the aux
-                                 * data is duplicated). NULL means just
-                                 * copy the source clientData bits; no
-                                 * proc need be called. */
-    AuxDataFreeProc *freeProc;	/* Callback procedure to invoke when the
-                                 * aux data is freed. NULL means no
-                                 * proc need be called. */
+    char *name;			/* The name of the type. Types can be
+				 * registered and found by name */
+    AuxDataDupProc *dupProc;	/* Callback procedure to invoke when the aux
+				 * data is duplicated (e.g., when the ByteCode
+				 * structure containing the aux data is
+				 * duplicated). NULL means just copy the
+				 * source clientData bits; no proc need be
+				 * called. */
+    AuxDataFreeProc *freeProc;	/* Callback procedure to invoke when the aux
+				 * data is freed. NULL means no proc need be
+				 * called. */
+    AuxDataPrintProc *printProc;/* Callback function to invoke when printing
+				 * the aux data as part of debugging. NULL
+				 * means that the data can't be printed. */
 } AuxDataType;
 
 /*
@@ -203,8 +207,8 @@ typedef struct AuxDataType {
  */
 
 typedef struct AuxData {
-    AuxDataType *type;		/* pointer to the AuxData type associated with
-                             * this ClientData. */
+    AuxDataType *type;		/* Pointer to the AuxData type associated with
+				 * this ClientData. */
     ClientData clientData;	/* The compilation data itself. */
 } AuxData;
 
@@ -222,90 +226,91 @@ typedef struct AuxData {
 
 typedef struct CompileEnv {
     Interp *iPtr;		/* Interpreter containing the code being
-				 * compiled. Commands and their compile
-				 * procs are specific to an interpreter so
-				 * the code emitted will depend on the
-				 * interpreter. */
-    char *source;		/* The source string being compiled by
+				 * compiled. Commands and their compile procs
+				 * are specific to an interpreter so the code
+				 * emitted will depend on the interpreter. */
+    const char *source;		/* The source string being compiled by
 				 * SetByteCodeFromAny. This pointer is not
 				 * owned by the CompileEnv and must not be
 				 * freed or changed by it. */
     int numSrcBytes;		/* Number of bytes in source. */
-    Proc *procPtr;		/* If a procedure is being compiled, a
-				 * pointer to its Proc structure; otherwise
-				 * NULL. Used to compile local variables.
-				 * Set from information provided by
-				 * ObjInterpProc in tclProc.c. */
+    Proc *procPtr;		/* If a procedure is being compiled, a pointer
+				 * to its Proc structure; otherwise NULL. Used
+				 * to compile local variables. Set from
+				 * information provided by ObjInterpProc in
+				 * tclProc.c. */
     int numCommands;		/* Number of commands compiled. */
-    int exceptDepth;		/* Current exception range nesting level;
-				 * -1 if not in any range currently. */
-    int maxExceptDepth;		/* Max nesting level of exception ranges;
-				 * -1 if no ranges have been compiled. */
-    int maxStackDepth;		/* Maximum number of stack elements needed
-				 * to execute the code. Set by compilation
+    int exceptDepth;		/* Current exception range nesting level; -1
+				 * if not in any range currently. */
+    int maxExceptDepth;		/* Max nesting level of exception ranges; -1
+				 * if no ranges have been compiled. */
+    int maxStackDepth;		/* Maximum number of stack elements needed to
+				 * execute the code. Set by compilation
 				 * procedures before returning. */
-    int currStackDepth;         /* Current stack depth. */
-    LiteralTable localLitTable;	/* Contains LiteralEntry's describing
-				 * all Tcl objects referenced by this
-				 * compiled code. Indexed by the string
-				 * representations of the literals. Used to
-				 * avoid creating duplicate objects. */
+    int currStackDepth;		/* Current stack depth. */
+    LiteralTable localLitTable;	/* Contains LiteralEntry's describing all Tcl
+				 * objects referenced by this compiled code.
+				 * Indexed by the string representations of
+				 * the literals. Used to avoid creating
+				 * duplicate objects. */
     unsigned char *codeStart;	/* Points to the first byte of the code. */
     unsigned char *codeNext;	/* Points to next code array byte to use. */
-    unsigned char *codeEnd;	/* Points just after the last allocated
-				 * code array byte. */
-    int mallocedCodeArray;      /* Set 1 if code array was expanded 
-				 * and codeStart points into the heap.*/
+    unsigned char *codeEnd;	/* Points just after the last allocated code
+				 * array byte. */
+    int mallocedCodeArray;	/* Set 1 if code array was expanded and
+				 * codeStart points into the heap.*/
     LiteralEntry *literalArrayPtr;
     				/* Points to start of LiteralEntry array. */
     int literalArrayNext;	/* Index of next free object array entry. */
     int literalArrayEnd;	/* Index just after last obj array entry. */
-    int mallocedLiteralArray;   /* 1 if object array was expanded and
-                                 * objArray points into the heap, else 0. */
+    int mallocedLiteralArray;	/* 1 if object array was expanded and objArray
+				 * points into the heap, else 0. */
     ExceptionRange *exceptArrayPtr;
     				/* Points to start of the ExceptionRange
 				 * array. */
     int exceptArrayNext;	/* Next free ExceptionRange array index.
-				 * exceptArrayNext is the number of ranges
-				 * and (exceptArrayNext-1) is the index of
-				 * the current range's array entry. */
-    int exceptArrayEnd;		/* Index after the last ExceptionRange
-				 * array entry. */
-    int mallocedExceptArray;	/* 1 if ExceptionRange array was expanded
-				 * and exceptArrayPtr points in heap,
-				 * else 0. */
+				 * exceptArrayNext is the number of ranges and
+				 * (exceptArrayNext-1) is the index of the
+				 * current range's array entry. */
+    int exceptArrayEnd;		/* Index after the last ExceptionRange array
+				 * entry. */
+    int mallocedExceptArray;	/* 1 if ExceptionRange array was expanded and
+				 * exceptArrayPtr points in heap, else 0. */
     CmdLocation *cmdMapPtr;	/* Points to start of CmdLocation array.
-				 * numCommands is the index of the next
-				 * entry to use; (numCommands-1) is the
-				 * entry index for the last command. */
+				 * numCommands is the index of the next entry
+				 * to use; (numCommands-1) is the entry index
+				 * for the last command. */
     int cmdMapEnd;		/* Index after last CmdLocation entry. */
     int mallocedCmdMap;		/* 1 if command map array was expanded and
 				 * cmdMapPtr points in the heap, else 0. */
-    AuxData *auxDataArrayPtr;   /* Points to auxiliary data array start. */
+    AuxData *auxDataArrayPtr;	/* Points to auxiliary data array start. */
     int auxDataArrayNext;	/* Next free compile aux data array index.
-				 * auxDataArrayNext is the number of aux
-				 * data items and (auxDataArrayNext-1) is
-				 * index of current aux data array entry. */
+				 * auxDataArrayNext is the number of aux data
+				 * items and (auxDataArrayNext-1) is index of
+				 * current aux data array entry. */
     int auxDataArrayEnd;	/* Index after last aux data array entry. */
     int mallocedAuxDataArray;	/* 1 if aux data array was expanded and
 				 * auxDataArrayPtr points in heap else 0. */
     unsigned char staticCodeSpace[COMPILEENV_INIT_CODE_BYTES];
-                                /* Initial storage for code. */
+				/* Initial storage for code. */
     LiteralEntry staticLiteralSpace[COMPILEENV_INIT_NUM_OBJECTS];
-                                /* Initial storage of LiteralEntry array. */
+				/* Initial storage of LiteralEntry array. */
     ExceptionRange staticExceptArraySpace[COMPILEENV_INIT_EXCEPT_RANGES];
-                                /* Initial ExceptionRange array storage. */
+				/* Initial ExceptionRange array storage. */
     CmdLocation staticCmdMapSpace[COMPILEENV_INIT_CMD_MAP_SIZE];
-                                /* Initial storage for cmd location map. */
+				/* Initial storage for cmd location map. */
     AuxData staticAuxDataArraySpace[COMPILEENV_INIT_AUX_DATA_SIZE];
-                                /* Initial storage for aux data array. */
-#ifdef TCL_TIP280
+				/* Initial storage for aux data array. */
     /* TIP #280 */
-    ExtCmdLoc* extCmdMapPtr;    /* Extended command location information
-				 * for 'info frame'. */
-    int        line;            /* First line of the script, based on the
+    ExtCmdLoc *extCmdMapPtr;	/* Extended command location information for
+				 * 'info frame'. */
+    int line;			/* First line of the script, based on the
 				 * invoking context, then the line of the
 				 * command currently compiled. */
+    int atCmdStart;		/* Flag to say whether an INST_START_CMD
+				 * should be issued; they should never be
+				 * issued repeatedly, as that is significantly
+				 * inefficient. */
     ContLineLoc* clLoc;  /* If not NULL, the table holding the
 			  * locations of the invisible continuation
 			  * lines in the input script, to adjust the
@@ -313,26 +318,33 @@ typedef struct CompileEnv {
     int*         clNext; /* If not NULL, it refers to the next slot in
 			  * clLoc to check for an invisible
 			  * continuation line. */
-#endif
 } CompileEnv;
 
 /*
- * The structure defining the bytecode instructions resulting from compiling
- * a Tcl script. Note that this structure is variable length: a single heap
- * object is allocated to hold the ByteCode structure immediately followed
- * by the code bytes, the literal object array, the ExceptionRange array,
- * the CmdLocation map, and the compilation AuxData array.
+ * The structure defining the bytecode instructions resulting from compiling a
+ * Tcl script. Note that this structure is variable length: a single heap
+ * object is allocated to hold the ByteCode structure immediately followed by
+ * the code bytes, the literal object array, the ExceptionRange array, the
+ * CmdLocation map, and the compilation AuxData array.
  */
 
 /*
  * A PRECOMPILED bytecode struct is one that was generated from a compiled
  * image rather than implicitly compiled from source
  */
+
 #define TCL_BYTECODE_PRECOMPILED		0x0001
 
+/*
+ * When a bytecode is compiled, interp or namespace resolvers have not been
+ * applied yet: this is indicated by the TCL_BYTECODE_RESOLVE_VARS flag.
+ */
+
+#define TCL_BYTECODE_RESOLVE_VARS		0x0002
+
 typedef struct ByteCode {
     TclHandle interpHandle;	/* Handle for interpreter containing the
-				 * compiled code.  Commands and their compile
+				 * compiled code. Commands and their compile
 				 * procs are specific to an interpreter so the
 				 * code emitted will depend on the
 				 * interpreter. */
@@ -340,25 +352,25 @@ typedef struct ByteCode {
 				 * ByteCode was compiled. Used to invalidate
 				 * code when, e.g., commands with compile
 				 * procs are redefined. */
-    Namespace *nsPtr;		/* Namespace context in which this code
-				 * was compiled. If the code is executed
-				 * if a different namespace, it must be
+    Namespace *nsPtr;		/* Namespace context in which this code was
+				 * compiled. If the code is executed if a
+				 * different namespace, it must be
 				 * recompiled. */
     int nsEpoch;		/* Value of nsPtr->resolverEpoch when this
 				 * ByteCode was compiled. Used to invalidate
 				 * code when new namespace resolution rules
 				 * are put into effect. */
-    int refCount;		/* Reference count: set 1 when created
-				 * plus 1 for each execution of the code
-				 * currently active. This structure can be
-				 * freed when refCount becomes zero. */
+    int refCount;		/* Reference count: set 1 when created plus 1
+				 * for each execution of the code currently
+				 * active. This structure can be freed when
+				 * refCount becomes zero. */
     unsigned int flags;		/* flags describing state for the codebyte.
-                                 * this variable holds ORed values from the
-                                 * TCL_BYTECODE_ masks defined above */
-    char *source;		/* The source string from which this
-				 * ByteCode was compiled. Note that this
-				 * pointer is not owned by the ByteCode and
-				 * must not be freed or modified by it. */
+				 * this variable holds ORed values from the
+				 * TCL_BYTECODE_ masks defined above */
+    const char *source;		/* The source string from which this ByteCode
+				 * was compiled. Note that this pointer is not
+				 * owned by the ByteCode and must not be freed
+				 * or modified by it. */
     Proc *procPtr;		/* If the ByteCode was compiled from a
 				 * procedure body, this is a pointer to its
 				 * Proc structure; otherwise NULL. This
@@ -374,71 +386,72 @@ typedef struct ByteCode {
     int numLitObjects;		/* Number of objects in literal array. */
     int numExceptRanges;	/* Number of ExceptionRange array elems. */
     int numAuxDataItems;	/* Number of AuxData items. */
-    int numCmdLocBytes;		/* Number of bytes needed for encoded
-				 * command location information. */
+    int numCmdLocBytes;		/* Number of bytes needed for encoded command
+				 * location information. */
     int maxExceptDepth;		/* Maximum nesting level of ExceptionRanges;
 				 * -1 if no ranges were compiled. */
-    int maxStackDepth;		/* Maximum number of stack elements needed
-				 * to execute the code. */
-    unsigned char *codeStart;	/* Points to the first byte of the code.
-				 * This is just after the final ByteCode
-				 * member cmdMapPtr. */
-    Tcl_Obj **objArrayPtr;	/* Points to the start of the literal
-				 * object array. This is just after the
-				 * last code byte. */
+    int maxStackDepth;		/* Maximum number of stack elements needed to
+				 * execute the code. */
+    unsigned char *codeStart;	/* Points to the first byte of the code. This
+				 * is just after the final ByteCode member
+				 * cmdMapPtr. */
+    Tcl_Obj **objArrayPtr;	/* Points to the start of the literal object
+				 * array. This is just after the last code
+				 * byte. */
     ExceptionRange *exceptArrayPtr;
     				/* Points to the start of the ExceptionRange
-				 * array. This is just after the last
-				 * object in the object array. */
-    AuxData *auxDataArrayPtr;   /* Points to the start of the auxiliary data
-				 * array. This is just after the last entry
-				 * in the ExceptionRange array. */
+				 * array. This is just after the last object
+				 * in the object array. */
+    AuxData *auxDataArrayPtr;	/* Points to the start of the auxiliary data
+				 * array. This is just after the last entry in
+				 * the ExceptionRange array. */
     unsigned char *codeDeltaStart;
-				/* Points to the first of a sequence of
-				 * bytes that encode the change in the
-				 * starting offset of each command's code.
-				 * If -127<=delta<=127, it is encoded as 1
-				 * byte, otherwise 0xFF (128) appears and
-				 * the delta is encoded by the next 4 bytes.
-				 * Code deltas are always positive. This
-				 * sequence is just after the last entry in
-				 * the AuxData array. */
+				/* Points to the first of a sequence of bytes
+				 * that encode the change in the starting
+				 * offset of each command's code. If -127 <=
+				 * delta <= 127, it is encoded as 1 byte,
+				 * otherwise 0xFF (128) appears and the delta
+				 * is encoded by the next 4 bytes. Code deltas
+				 * are always positive. This sequence is just
+				 * after the last entry in the AuxData
+				 * array. */
     unsigned char *codeLengthStart;
-				/* Points to the first of a sequence of
-				 * bytes that encode the length of each
-				 * command's code. The encoding is the same
-				 * as for code deltas. Code lengths are
-				 * always positive. This sequence is just
-				 * after the last entry in the code delta
-				 * sequence. */
+				/* Points to the first of a sequence of bytes
+				 * that encode the length of each command's
+				 * code. The encoding is the same as for code
+				 * deltas. Code lengths are always positive.
+				 * This sequence is just after the last entry
+				 * in the code delta sequence. */
     unsigned char *srcDeltaStart;
-				/* Points to the first of a sequence of
-				 * bytes that encode the change in the
-				 * starting offset of each command's source.
-				 * The encoding is the same as for code
-				 * deltas. Source deltas can be negative.
-				 * This sequence is just after the last byte
-				 * in the code length sequence. */
+				/* Points to the first of a sequence of bytes
+				 * that encode the change in the starting
+				 * offset of each command's source. The
+				 * encoding is the same as for code deltas.
+				 * Source deltas can be negative. This
+				 * sequence is just after the last byte in the
+				 * code length sequence. */
     unsigned char *srcLengthStart;
-				/* Points to the first of a sequence of
-				 * bytes that encode the length of each
-				 * command's source. The encoding is the
-				 * same as for code deltas. Source lengths
-				 * are always positive. This sequence is
-				 * just after the last byte in the source
-				 * delta sequence. */
+				/* Points to the first of a sequence of bytes
+				 * that encode the length of each command's
+				 * source. The encoding is the same as for
+				 * code deltas. Source lengths are always
+				 * positive. This sequence is just after the
+				 * last byte in the source delta sequence. */
+    LocalCache *localCachePtr;  /* Pointer to the start of the cached variable
+				 * names and initialisation data for local
+				 * variables. */
 #ifdef TCL_COMPILE_STATS
     Tcl_Time createTime;	/* Absolute time when the ByteCode was
 				 * created. */
 #endif /* TCL_COMPILE_STATS */
 } ByteCode;
-
+
 /*
- * Opcodes for the Tcl bytecode instructions. These must correspond to
- * the entries in the table of instruction descriptions,
- * tclInstructionTable, in tclCompile.c. Also, the order and number of
- * the expression opcodes (e.g., INST_LOR) must match the entries in
- * the array operatorStrings in tclExecute.c.
+ * Opcodes for the Tcl bytecode instructions. These must correspond to the
+ * entries in the table of instruction descriptions, tclInstructionTable, in
+ * tclCompile.c. Also, the order and number of the expression opcodes (e.g.,
+ * INST_LOR) must match the entries in the array operatorStrings in
+ * tclExecute.c.
  */
 
 /* Opcodes 0 to 9 */
@@ -487,7 +500,7 @@ typedef struct ByteCode {
 #define INST_JUMP_TRUE1			36
 #define INST_JUMP_TRUE4			37
 #define INST_JUMP_FALSE1		38
-#define INST_JUMP_FALSE4	        39
+#define INST_JUMP_FALSE4		39
 
 /* Opcodes 40 to 64 */
 #define INST_LOR			40
@@ -564,24 +577,104 @@ typedef struct ByteCode {
 #define INST_LIST_INDEX_MULTI		94
 
 /*
- * TIP #33 - 'lset' command.  Code gen also required a Forth-like
- *           OVER operation.
+ * TIP #33 - 'lset' command. Code gen also required a Forth-like
+ *	     OVER operation.
  */
 
-#define INST_OVER                       95
+#define INST_OVER			95
 #define INST_LSET_LIST			96
-#define INST_LSET_FLAT                  97
+#define INST_LSET_FLAT			97
 
-/* The last opcode */
-#define LAST_INST_OPCODE        	97
+/* TIP#90 - 'return' command. */
+
+#define INST_RETURN_IMM			98
+
+/* TIP#123 - exponentiation operator. */
+
+#define INST_EXPON			99
+
+/* TIP #157 - {*}... (word expansion) language syntax support. */
+
+#define INST_EXPAND_START		100
+#define INST_EXPAND_STKTOP		101
+#define INST_INVOKE_EXPANDED		102
+
+/*
+ * TIP #57 - 'lassign' command. Code generation requires immediate
+ *	     LINDEX and LRANGE operators.
+ */
+
+#define INST_LIST_INDEX_IMM		103
+#define INST_LIST_RANGE_IMM		104
+
+#define INST_START_CMD			105
+
+#define INST_LIST_IN			106
+#define INST_LIST_NOT_IN		107
+
+#define INST_PUSH_RETURN_OPTIONS	108
+#define INST_RETURN_STK			109
+
+/*
+ * Dictionary (TIP#111) related commands.
+ */
+
+#define INST_DICT_GET			110
+#define INST_DICT_SET			111
+#define INST_DICT_UNSET			112
+#define INST_DICT_INCR_IMM		113
+#define INST_DICT_APPEND		114
+#define INST_DICT_LAPPEND		115
+#define INST_DICT_FIRST			116
+#define INST_DICT_NEXT			117
+#define INST_DICT_DONE			118
+#define INST_DICT_UPDATE_START		119
+#define INST_DICT_UPDATE_END		120
 
 /*
- * Table describing the Tcl bytecode instructions: their name (for
- * displaying code), total number of code bytes required (including
- * operand bytes), and a description of the type of each operand.
- * These operand types include signed and unsigned integers of length
- * one and four bytes. The unsigned integers are used for indexes or
- * for, e.g., the count of objects to push in a "push" instruction.
+ * Instruction to support jumps defined by tables (instead of the classic
+ * [switch] technique of chained comparisons).
+ */
+
+#define INST_JUMP_TABLE			121
+
+/*
+ * Instructions to support compilation of global, variable, upvar and
+ * [namespace upvar].
+ */
+
+#define INST_UPVAR			122
+#define INST_NSUPVAR			123
+#define INST_VARIABLE			124
+
+/* Instruction to support compiling syntax error to bytecode */
+
+#define INST_SYNTAX			125
+
+/* Instruction to reverse N items on top of stack */
+
+#define INST_REVERSE			126
+
+/* regexp instruction */
+
+#define INST_REGEXP			127
+
+/* For [info exists] compilation */
+#define INST_EXIST_SCALAR		128
+#define INST_EXIST_ARRAY		129
+#define INST_EXIST_ARRAY_STK		130
+#define INST_EXIST_STK			131
+
+/* The last opcode */
+#define LAST_INST_OPCODE		131
+
+/*
+ * Table describing the Tcl bytecode instructions: their name (for displaying
+ * code), total number of code bytes required (including operand bytes), and a
+ * description of the type of each operand. These operand types include signed
+ * and unsigned integers of length one and four bytes. The unsigned integers
+ * are used for indexes or for, e.g., the count of objects to push in a "push"
+ * instruction.
  */
 
 #define MAX_INSTRUCTION_OPERANDS 2
@@ -591,94 +684,43 @@ typedef enum InstOperandType {
     OPERAND_INT1,		/* One byte signed integer. */
     OPERAND_INT4,		/* Four byte signed integer. */
     OPERAND_UINT1,		/* One byte unsigned integer. */
-    OPERAND_UINT4		/* Four byte unsigned integer. */
+    OPERAND_UINT4,		/* Four byte unsigned integer. */
+    OPERAND_IDX4,		/* Four byte signed index (actually an
+				 * integer, but displayed differently.) */
+    OPERAND_LVT1,		/* One byte unsigned index into the local
+				 * variable table. */
+    OPERAND_LVT4,		/* Four byte unsigned index into the local
+				 * variable table. */
+    OPERAND_AUX4		/* Four byte unsigned index into the aux data
+				 * table. */
 } InstOperandType;
 
 typedef struct InstructionDesc {
     char *name;			/* Name of instruction. */
     int numBytes;		/* Total number of bytes for instruction. */
-    int stackEffect;            /* The worst-case balance stack effect of the 
-				 * instruction, used for stack requirements 
+    int stackEffect;		/* The worst-case balance stack effect of the
+				 * instruction, used for stack requirements
 				 * computations. The value INT_MIN signals
-				 * that the instruction's worst case effect
-				 * is (1-opnd1).
-				 */
+				 * that the instruction's worst case effect is
+				 * (1-opnd1). */
     int numOperands;		/* Number of operands. */
     InstOperandType opTypes[MAX_INSTRUCTION_OPERANDS];
 				/* The type of each operand. */
 } InstructionDesc;
 
-extern InstructionDesc tclInstructionTable[];
-
-/*
- * Definitions of the values of the INST_CALL_BUILTIN_FUNC instruction's
- * operand byte. Each value denotes a builtin Tcl math function. These
- * values must correspond to the entries in the tclBuiltinFuncTable array
- * below and to the values stored in the tclInt.h MathFunc structure's
- * builtinFuncIndex field.
- */
-
-#define BUILTIN_FUNC_ACOS		0
-#define BUILTIN_FUNC_ASIN		1
-#define BUILTIN_FUNC_ATAN		2
-#define BUILTIN_FUNC_ATAN2		3
-#define BUILTIN_FUNC_CEIL		4
-#define BUILTIN_FUNC_COS		5
-#define BUILTIN_FUNC_COSH		6
-#define BUILTIN_FUNC_EXP		7
-#define BUILTIN_FUNC_FLOOR		8
-#define BUILTIN_FUNC_FMOD		9
-#define BUILTIN_FUNC_HYPOT		10
-#define BUILTIN_FUNC_LOG		11
-#define BUILTIN_FUNC_LOG10		12
-#define BUILTIN_FUNC_POW		13
-#define BUILTIN_FUNC_SIN		14
-#define BUILTIN_FUNC_SINH		15
-#define BUILTIN_FUNC_SQRT		16
-#define BUILTIN_FUNC_TAN		17
-#define BUILTIN_FUNC_TANH		18
-#define BUILTIN_FUNC_ABS		19
-#define BUILTIN_FUNC_DOUBLE		20
-#define BUILTIN_FUNC_INT		21
-#define BUILTIN_FUNC_RAND		22
-#define BUILTIN_FUNC_ROUND		23
-#define BUILTIN_FUNC_SRAND		24
-#define BUILTIN_FUNC_WIDE		25
-
-#define LAST_BUILTIN_FUNC        	25
-
-/*
- * Table describing the built-in math functions. Entries in this table are
- * indexed by the values of the INST_CALL_BUILTIN_FUNC instruction's
- * operand byte.
- */
-
-typedef int (CallBuiltinFuncProc) _ANSI_ARGS_((Tcl_Interp *interp,
-        ExecEnv *eePtr, ClientData clientData));
-
-typedef struct {
-    char *name;			/* Name of function. */
-    int numArgs;		/* Number of arguments for function. */
-    Tcl_ValueType argTypes[MAX_MATH_ARGS];
-				/* Acceptable types for each argument. */
-    CallBuiltinFuncProc *proc;	/* Procedure implementing this function. */
-    ClientData clientData;	/* Additional argument to pass to the
-				 * function when invoking it. */
-} BuiltinFunc;
-
-extern BuiltinFunc tclBuiltinFuncTable[];
+MODULE_SCOPE InstructionDesc tclInstructionTable[];
 
 /*
  * Compilation of some Tcl constructs such as if commands and the logical or
- * (||) and logical and (&&) operators in expressions requires the
- * generation of forward jumps. Since the PC target of these jumps isn't
- * known when the jumps are emitted, we record the offset of each jump in an
- * array of JumpFixup structures. There is one array for each sequence of
- * jumps to one target PC. When we learn the target PC, we update the jumps
- * with the correct distance. Also, if the distance is too great (> 127
- * bytes), we replace the single-byte jump with a four byte jump
- * instruction, move the instructions after the jump down, and update the
- * code offsets for any commands between the jump and the target.
+ * (||) and logical and (&&) operators in expressions requires the generation
+ * of forward jumps. Since the PC target of these jumps isn't known when the
+ * jumps are emitted, we record the offset of each jump in an array of
+ * JumpFixup structures. There is one array for each sequence of jumps to one
+ * target PC. When we learn the target PC, we update the jumps with the
+ * correct distance. Also, if the distance is too great (> 127 bytes), we
+ * replace the single-byte jump with a four byte jump instruction, move the
+ * instructions after the jump down, and update the code offsets for any
+ * commands between the jump and the target.
  */
 
 typedef enum {
@@ -697,14 +739,14 @@ typedef struct JumpFixup {
 				 * commands if the two-byte jump at jumpPc
 				 * must be replaced with a five-byte one. */
     int exceptIndex;		/* Index of the first range entry in the
-				 * ExceptionRange array after the current
-				 * one. This field is used to adjust the
-				 * code offsets in subsequent ExceptionRange
+				 * ExceptionRange array after the current one.
+				 * This field is used to adjust the code
+				 * offsets in subsequent ExceptionRange
 				 * records when a jump is grown from 2 bytes
 				 * to 5 bytes. */
 } JumpFixup;
 
-#define JUMPFIXUP_INIT_ENTRIES    10
+#define JUMPFIXUP_INIT_ENTRIES	10
 
 typedef struct JumpFixupArray {
     JumpFixup *fixup;		/* Points to start of jump fixup array. */
@@ -717,21 +759,21 @@ typedef struct JumpFixupArray {
 } JumpFixupArray;
 
 /*
- * The structure describing one variable list of a foreach command. Note
- * that only foreach commands inside procedure bodies are compiled inline so
- * a ForeachVarList structure always describes local variables. Furthermore,
+ * The structure describing one variable list of a foreach command. Note that
+ * only foreach commands inside procedure bodies are compiled inline so a
+ * ForeachVarList structure always describes local variables. Furthermore,
  * only scalar variables are supported for inline-compiled foreach loops.
  */
 
 typedef struct ForeachVarList {
     int numVars;		/* The number of variables in the list. */
     int varIndexes[1];		/* An array of the indexes ("slot numbers")
-				 * for each variable in the procedure's
-				 * array of local variables. Only scalar
-				 * variables are supported. The actual
-				 * size of this field will be large enough
-				 * to numVars indexes. THIS MUST BE THE
-				 * LAST FIELD IN THE STRUCTURE! */
+				 * for each variable in the procedure's array
+				 * of local variables. Only scalar variables
+				 * are supported. The actual size of this
+				 * field will be large enough to numVars
+				 * indexes. THIS MUST BE THE LAST FIELD IN THE
+				 * STRUCTURE! */
 } ForeachVarList;
 
 /*
@@ -743,281 +785,360 @@ typedef struct ForeachVarList {
 typedef struct ForeachInfo {
     int numLists;		/* The number of both the variable and value
 				 * lists of the foreach command. */
-    int firstValueTemp;		/* Index of the first temp var in a proc
-				 * frame used to point to a value list. */
-    int loopCtTemp;		/* Index of temp var in a proc frame
-				 * holding the loop's iteration count. Used
-				 * to determine next value list element to
-				 * assign each loop var. */
+    int firstValueTemp;		/* Index of the first temp var in a proc frame
+				 * used to point to a value list. */
+    int loopCtTemp;		/* Index of temp var in a proc frame holding
+				 * the loop's iteration count. Used to
+				 * determine next value list element to assign
+				 * each loop var. */
     ForeachVarList *varLists[1];/* An array of pointers to ForeachVarList
 				 * structures describing each var list. The
 				 * actual size of this field will be large
-				 * enough to numVars indexes. THIS MUST BE
-				 * THE LAST FIELD IN THE STRUCTURE! */
+				 * enough to numVars indexes. THIS MUST BE THE
+				 * LAST FIELD IN THE STRUCTURE! */
 } ForeachInfo;
 
-extern AuxDataType		tclForeachInfoType;
+MODULE_SCOPE AuxDataType	tclForeachInfoType;
+
+/*
+ * Structure used to hold information about a switch command that is needed
+ * during program execution. These structures are stored in CompileEnv and
+ * ByteCode structures as auxiliary data.
+ */
+
+typedef struct JumptableInfo {
+    Tcl_HashTable hashTable;	/* Hash that maps strings to signed ints (PC
+				 * offsets). */
+} JumptableInfo;
+
+MODULE_SCOPE AuxDataType	tclJumptableInfoType;
+
+/*
+ * Structure used to hold information about a [dict update] command that is
+ * needed during program execution. These structures are stored in CompileEnv
+ * and ByteCode structures as auxiliary data.
+ */
+
+typedef struct {
+    int length;			/* Size of array */
+    int varIndices[1];		/* Array of variable indices to manage when
+				 * processing the start and end of a [dict
+				 * update]. There is really more than one
+				 * entry, and the structure is allocated to
+				 * take account of this. MUST BE LAST FIELD IN
+				 * STRUCTURE. */
+} DictUpdateInfo;
+
+MODULE_SCOPE AuxDataType	tclDictUpdateInfoType;
 
+/*
+ * ClientData type used by the math operator commands.
+ */
 
+typedef struct {
+    const char *op;   /* Do not call it 'operator': C++ reserved */
+    const char *expected;
+    union {
+	int numArgs;
+	int identity;
+    } i;
+} TclOpCmdClientData;
+
 /*
  *----------------------------------------------------------------
  * Procedures exported by tclBasic.c to be used within the engine.
  *----------------------------------------------------------------
  */
 
-EXTERN int		TclEvalObjvInternal _ANSI_ARGS_((Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[], CONST char *command, int length,
-			    int flags));
-EXTERN int              TclInterpReady _ANSI_ARGS_((Tcl_Interp *interp));
-
-
+MODULE_SCOPE int	TclEvalObjvInternal(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[],
+			    CONST char *command, int length, int flags);
 /*
  *----------------------------------------------------------------
  * Procedures exported by the engine to be used by tclBasic.c
  *----------------------------------------------------------------
  */
 
-#ifndef TCL_TIP280
-EXTERN int		TclCompEvalObj _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-#else
-EXTERN int		TclCompEvalObj _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr, CONST CmdFrame* invoker,
-			    int word));
-#endif
+MODULE_SCOPE int	TclCompEvalObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+			    const CmdFrame *invoker, int word);
 
 /*
  *----------------------------------------------------------------
- * Procedures shared among Tcl bytecode compilation and execution
- * modules but not used outside:
+ * Procedures shared among Tcl bytecode compilation and execution modules but
+ * not used outside:
  *----------------------------------------------------------------
  */
 
-EXTERN void		TclCleanupByteCode _ANSI_ARGS_((ByteCode *codePtr));
-EXTERN int		TclCompileCmdWord _ANSI_ARGS_((Tcl_Interp *interp,
+MODULE_SCOPE void	TclCleanupByteCode(ByteCode *codePtr);
+MODULE_SCOPE void	TclCompileCmdWord(Tcl_Interp *interp,
 			    Tcl_Token *tokenPtr, int count,
-			    CompileEnv *envPtr));
-EXTERN int		TclCompileExpr _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *script, int numBytes,
-			    CompileEnv *envPtr));
-EXTERN int		TclCompileExprWords _ANSI_ARGS_((Tcl_Interp *interp,
+			    CompileEnv *envPtr);
+MODULE_SCOPE void	TclCompileExpr(Tcl_Interp *interp, CONST char *script,
+	                    int numBytes, CompileEnv *envPtr, int optimize);
+MODULE_SCOPE void	TclCompileExprWords(Tcl_Interp *interp,
 			    Tcl_Token *tokenPtr, int numWords,
-			    CompileEnv *envPtr));
-EXTERN int		TclCompileScript _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *script, int numBytes, int nested,
-			    CompileEnv *envPtr));
-EXTERN int		TclCompileTokens _ANSI_ARGS_((Tcl_Interp *interp,
+			    CompileEnv *envPtr);
+MODULE_SCOPE void	TclCompileScript(Tcl_Interp *interp,
+			    CONST char *script, int numBytes,
+			    CompileEnv *envPtr);
+MODULE_SCOPE void	TclCompileSyntaxError(Tcl_Interp *interp,
+			    CompileEnv *envPtr);
+MODULE_SCOPE void	TclCompileTokens(Tcl_Interp *interp,
 			    Tcl_Token *tokenPtr, int count,
-			    CompileEnv *envPtr));
-EXTERN int		TclCreateAuxData _ANSI_ARGS_((ClientData clientData,
-			    AuxDataType *typePtr, CompileEnv *envPtr));
-EXTERN int		TclCreateExceptRange _ANSI_ARGS_((
-			    ExceptionRangeType type, CompileEnv *envPtr));
-EXTERN ExecEnv *	TclCreateExecEnv _ANSI_ARGS_((Tcl_Interp *interp));
-EXTERN void		TclDeleteExecEnv _ANSI_ARGS_((ExecEnv *eePtr));
-EXTERN void		TclDeleteLiteralTable _ANSI_ARGS_((
-			    Tcl_Interp *interp, LiteralTable *tablePtr));
-EXTERN void		TclEmitForwardJump _ANSI_ARGS_((CompileEnv *envPtr,
-			    TclJumpType jumpType, JumpFixup *jumpFixupPtr));
-EXTERN ExceptionRange *	TclGetExceptionRangeForPc _ANSI_ARGS_((
-			    unsigned char *pc, int catchOnly,
-			    ByteCode* codePtr));
-EXTERN void		TclExpandJumpFixupArray _ANSI_ARGS_((
-                            JumpFixupArray *fixupArrayPtr));
-EXTERN void		TclFinalizeAuxDataTypeTable _ANSI_ARGS_((void));
-EXTERN int		TclFindCompiledLocal _ANSI_ARGS_((CONST char *name, 
-        		    int nameChars, int create, int flags,
-			    Proc *procPtr));
-EXTERN LiteralEntry *	TclLookupLiteralEntry _ANSI_ARGS_((
-			    Tcl_Interp *interp, Tcl_Obj *objPtr));
-EXTERN int		TclFixupForwardJump _ANSI_ARGS_((
-			    CompileEnv *envPtr, JumpFixup *jumpFixupPtr,
-			    int jumpDist, int distThreshold));
-EXTERN void		TclFreeCompileEnv _ANSI_ARGS_((CompileEnv *envPtr));
-EXTERN void		TclFreeJumpFixupArray _ANSI_ARGS_((
-  			    JumpFixupArray *fixupArrayPtr));
-EXTERN void		TclInitAuxDataTypeTable _ANSI_ARGS_((void));
-EXTERN void		TclInitByteCodeObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-			    CompileEnv *envPtr));
-EXTERN void		TclInitCompilation _ANSI_ARGS_((void));
-#ifndef TCL_TIP280
-EXTERN void		TclInitCompileEnv _ANSI_ARGS_((Tcl_Interp *interp,
-			    CompileEnv *envPtr, char *string,
-			    int numBytes));
-#else
-EXTERN void		TclInitCompileEnv _ANSI_ARGS_((Tcl_Interp *interp,
-			    CompileEnv *envPtr, char *string,
-			    int numBytes, CONST CmdFrame* invoker, int word));
-#endif
-EXTERN void		TclInitJumpFixupArray _ANSI_ARGS_((
-			    JumpFixupArray *fixupArrayPtr));
-EXTERN void		TclInitLiteralTable _ANSI_ARGS_((
-			    LiteralTable *tablePtr));
+			    CompileEnv *envPtr);
+MODULE_SCOPE int	TclCreateAuxData(ClientData clientData,
+			    AuxDataType *typePtr, CompileEnv *envPtr);
+MODULE_SCOPE int	TclCreateExceptRange(ExceptionRangeType type,
+			    CompileEnv *envPtr);
+MODULE_SCOPE ExecEnv *	TclCreateExecEnv(Tcl_Interp *interp);
+MODULE_SCOPE Tcl_Obj *  TclCreateLiteral(Interp *iPtr, char *bytes,
+	                    int length, unsigned int hash, int *newPtr,
+	                    Namespace *nsPtr, int flags,
+	                    LiteralEntry **globalPtrPtr);
+MODULE_SCOPE void	TclDeleteExecEnv(ExecEnv *eePtr);
+MODULE_SCOPE void	TclDeleteLiteralTable(Tcl_Interp *interp,
+			    LiteralTable *tablePtr);
+MODULE_SCOPE void	TclEmitForwardJump(CompileEnv *envPtr,
+			    TclJumpType jumpType, JumpFixup *jumpFixupPtr);
+MODULE_SCOPE ExceptionRange * TclGetExceptionRangeForPc(unsigned char *pc,
+			    int catchOnly, ByteCode* codePtr);
+MODULE_SCOPE void	TclExpandJumpFixupArray(JumpFixupArray *fixupArrayPtr);
+MODULE_SCOPE int	TclExecuteByteCode(Tcl_Interp *interp,
+			    ByteCode *codePtr);
+MODULE_SCOPE void	TclFinalizeAuxDataTypeTable(void);
+MODULE_SCOPE int	TclFindCompiledLocal(CONST char *name, int nameChars,
+			    int create, Proc *procPtr);
+MODULE_SCOPE LiteralEntry * TclLookupLiteralEntry(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr);
+MODULE_SCOPE int	TclFixupForwardJump(CompileEnv *envPtr,
+			    JumpFixup *jumpFixupPtr, int jumpDist,
+			    int distThreshold);
+MODULE_SCOPE void	TclFreeCompileEnv(CompileEnv *envPtr);
+MODULE_SCOPE void	TclFreeJumpFixupArray(JumpFixupArray *fixupArrayPtr);
+MODULE_SCOPE void	TclInitAuxDataTypeTable(void);
+MODULE_SCOPE void	TclInitByteCodeObj(Tcl_Obj *objPtr,
+			    CompileEnv *envPtr);
+MODULE_SCOPE void	TclInitCompilation(void);
+MODULE_SCOPE void	TclInitCompileEnv(Tcl_Interp *interp,
+			    CompileEnv *envPtr, const char *string,
+			    int numBytes, CONST CmdFrame* invoker, int word);
+MODULE_SCOPE void	TclInitJumpFixupArray(JumpFixupArray *fixupArrayPtr);
+MODULE_SCOPE void	TclInitLiteralTable(LiteralTable *tablePtr);
 #ifdef TCL_COMPILE_STATS
-EXTERN char *		TclLiteralStats _ANSI_ARGS_((
-			    LiteralTable *tablePtr));
-EXTERN int		TclLog2 _ANSI_ARGS_((int value));
+MODULE_SCOPE char *	TclLiteralStats(LiteralTable *tablePtr);
+MODULE_SCOPE int	TclLog2(int value);
 #endif
 #ifdef TCL_COMPILE_DEBUG
-EXTERN void		TclPrintByteCodeObj _ANSI_ARGS_((Tcl_Interp *interp,
-		            Tcl_Obj *objPtr));
+MODULE_SCOPE void	TclPrintByteCodeObj(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr);
 #endif
-EXTERN int		TclPrintInstruction _ANSI_ARGS_((ByteCode* codePtr,
-			    unsigned char *pc));
-EXTERN void		TclPrintObject _ANSI_ARGS_((FILE *outFile,
-			    Tcl_Obj *objPtr, int maxChars));
-EXTERN void		TclPrintSource _ANSI_ARGS_((FILE *outFile,
-			    CONST char *string, int maxChars));
-EXTERN void		TclRegisterAuxDataType _ANSI_ARGS_((AuxDataType *typePtr));
-EXTERN int		TclRegisterLiteral _ANSI_ARGS_((CompileEnv *envPtr,
-			    char *bytes, int length, int onHeap));
-EXTERN void		TclReleaseLiteral _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-EXTERN void		TclSetCmdNameObj _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr, Command *cmdPtr));
+MODULE_SCOPE int	TclPrintInstruction(ByteCode* codePtr,
+			    unsigned char *pc);
+MODULE_SCOPE void	TclPrintObject(FILE *outFile,
+			    Tcl_Obj *objPtr, int maxChars);
+MODULE_SCOPE void	TclPrintSource(FILE *outFile,
+			    CONST char *string, int maxChars);
+MODULE_SCOPE void	TclRegisterAuxDataType(AuxDataType *typePtr);
+MODULE_SCOPE int	TclRegisterLiteral(CompileEnv *envPtr,
+			    char *bytes, int length, int flags);
+MODULE_SCOPE void	TclReleaseLiteral(Tcl_Interp *interp, Tcl_Obj *objPtr);
+MODULE_SCOPE int	TclSingleOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *CONST objv[]);
+MODULE_SCOPE int	TclSortingOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *CONST objv[]);
+MODULE_SCOPE int	TclVariadicOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *CONST objv[]);
+MODULE_SCOPE int	TclNoIdentOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *CONST objv[]);
 #ifdef TCL_COMPILE_DEBUG
-EXTERN void		TclVerifyGlobalLiteralTable _ANSI_ARGS_((
-			    Interp *iPtr));
-EXTERN void		TclVerifyLocalLiteralTable _ANSI_ARGS_((
-			    CompileEnv *envPtr));
+MODULE_SCOPE void	TclVerifyGlobalLiteralTable(Interp *iPtr);
+MODULE_SCOPE void	TclVerifyLocalLiteralTable(CompileEnv *envPtr);
 #endif
-EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
-			    Tcl_Interp *interp, Tcl_Parse *parsePtr, CompileEnv *envPtr));
-
+MODULE_SCOPE int	TclWordKnownAtCompileTime(Tcl_Token *tokenPtr,
+			    Tcl_Obj *valuePtr);
+
 /*
  *----------------------------------------------------------------
- * Macros used by Tcl bytecode compilation and execution modules
- * inside the Tcl core but not used outside.
+ * Macros and flag values used by Tcl bytecode compilation and execution
+ * modules inside the Tcl core but not used outside.
  *----------------------------------------------------------------
  */
 
+#define LITERAL_ON_HEAP    0x01
+#define LITERAL_NS_SCOPE   0x02
+
 /*
- * Form of TclRegisterLiteral with onHeap == 0.
- * In that case, it is safe to cast away CONSTness, and it
- * is cleanest to do that here, all in one place.
+ * Form of TclRegisterLiteral with onHeap == 0. In that case, it is safe to
+ * cast away CONSTness, and it is cleanest to do that here, all in one place.
+ *
+ * int TclRegisterNewLiteral(CompileEnv *envPtr, const char *bytes,
+ *			     int length);
  */
 
 #define TclRegisterNewLiteral(envPtr, bytes, length) \
-	TclRegisterLiteral(envPtr, (char *)(bytes), length, /*onHeap*/ 0)
+	TclRegisterLiteral(envPtr, (char *)(bytes), length, /*flags*/ 0)
 
 /*
- * Macro used to update the stack requirements.
- * It is called by the macros TclEmitOpCode, TclEmitInst1 and
- * TclEmitInst4.
- * Remark that the very last instruction of a bytecode always
- * reduces the stack level: INST_DONE or INST_POP, so that the 
- * maxStackdepth is always updated.
+ * Form of TclRegisterNSLiteral with onHeap == 0. In that case, it is safe to
+ * cast away CONSTness, and it is cleanest to do that here, all in one place.
+ *
+ * int TclRegisterNewNSLiteral(CompileEnv *envPtr, const char *bytes,
+ *			       int length);
+ */
+
+#define TclRegisterNewNSLiteral(envPtr, bytes, length) \
+	TclRegisterLiteral(envPtr, (char *)(bytes), length, \
+		/*flags*/ LITERAL_NS_SCOPE)
+
+/*
+ * Macro used to manually adjust the stack requirements; used in cases where
+ * the stack effect cannot be computed from the opcode and its operands, but
+ * is still known at compile time.
+ *
+ * void TclAdjustStackDepth(int delta, CompileEnv *envPtr);
+ */
+
+#define TclAdjustStackDepth(delta, envPtr) \
+    if ((delta) < 0) {\
+	if((envPtr)->maxStackDepth < (envPtr)->currStackDepth) {\
+	    (envPtr)->maxStackDepth = (envPtr)->currStackDepth;\
+	}\
+    }\
+    (envPtr)->currStackDepth += (delta)
+
+/*
+ * Macro used to update the stack requirements. It is called by the macros
+ * TclEmitOpCode, TclEmitInst1 and TclEmitInst4.
+ * Remark that the very last instruction of a bytecode always reduces the
+ * stack level: INST_DONE or INST_POP, so that the maxStackdepth is always
+ * updated.
+ *
+ * void TclUpdateStackReqs(unsigned char op, int i, CompileEnv *envPtr);
  */
 
 #define TclUpdateStackReqs(op, i, envPtr) \
     {\
 	int delta = tclInstructionTable[(op)].stackEffect;\
 	if (delta) {\
-	    if (delta < 0) {\
-		if((envPtr)->maxStackDepth < (envPtr)->currStackDepth) {\
-		    (envPtr)->maxStackDepth = (envPtr)->currStackDepth;\
-		}\
-		if (delta == INT_MIN) {\
-		    delta = 1 - (i);\
-		}\
+	    if (delta == INT_MIN) {\
+		delta = 1 - (i);\
 	    }\
-	    (envPtr)->currStackDepth += delta;\
+	    TclAdjustStackDepth(delta, envPtr);\
 	}\
     }
 
 /*
- * Macro to emit an opcode byte into a CompileEnv's code array.
- * The ANSI C "prototype" for this macro is:
+ * Macro to emit an opcode byte into a CompileEnv's code array. The ANSI C
+ * "prototype" for this macro is:
  *
- * EXTERN void	TclEmitOpcode _ANSI_ARGS_((unsigned char op,
- *		    CompileEnv *envPtr));
+ * void TclEmitOpcode(unsigned char op, CompileEnv *envPtr);
  */
 
 #define TclEmitOpcode(op, envPtr) \
-    if ((envPtr)->codeNext == (envPtr)->codeEnd) \
-        TclExpandCodeArray(envPtr); \
+    if ((envPtr)->codeNext == (envPtr)->codeEnd) { \
+	TclExpandCodeArray(envPtr); \
+    } \
     *(envPtr)->codeNext++ = (unsigned char) (op);\
+    (envPtr)->atCmdStart = ((op) == INST_START_CMD); \
     TclUpdateStackReqs(op, 0, envPtr)
 
 /*
- * Macro to emit an integer operand.
- * The ANSI C "prototype" for this macro is:
+ * Macros to emit an integer operand. The ANSI C "prototype" for these macros
+ * are:
  *
- * EXTERN void	TclEmitInt1 _ANSI_ARGS_((int i, CompileEnv *envPtr));
+ * void TclEmitInt1(int i, CompileEnv *envPtr);
+ * void TclEmitInt4(int i, CompileEnv *envPtr);
  */
 
 #define TclEmitInt1(i, envPtr) \
-    if ((envPtr)->codeNext == (envPtr)->codeEnd) \
-        TclExpandCodeArray(envPtr); \
+    if ((envPtr)->codeNext == (envPtr)->codeEnd) { \
+	TclExpandCodeArray(envPtr); \
+    } \
     *(envPtr)->codeNext++ = (unsigned char) ((unsigned int) (i))
 
+#define TclEmitInt4(i, envPtr) \
+    if (((envPtr)->codeNext + 4) > (envPtr)->codeEnd) { \
+	TclExpandCodeArray(envPtr); \
+    } \
+    *(envPtr)->codeNext++ = \
+	(unsigned char) ((unsigned int) (i) >> 24); \
+    *(envPtr)->codeNext++ = \
+	(unsigned char) ((unsigned int) (i) >> 16); \
+    *(envPtr)->codeNext++ = \
+	(unsigned char) ((unsigned int) (i) >>  8); \
+    *(envPtr)->codeNext++ = \
+	(unsigned char) ((unsigned int) (i)      )
+
 /*
  * Macros to emit an instruction with signed or unsigned integer operands.
  * Four byte integers are stored in "big-endian" order with the high order
- * byte stored at the lowest address.
- * The ANSI C "prototypes" for these macros are:
+ * byte stored at the lowest address. The ANSI C "prototypes" for these macros
+ * are:
  *
- * EXTERN void	TclEmitInstInt1 _ANSI_ARGS_((unsigned char op, int i, 
- *		    CompileEnv *envPtr));
- * EXTERN void	TclEmitInstInt4 _ANSI_ARGS_((unsigned char op, int i, 
- *		    CompileEnv *envPtr));
+ * void TclEmitInstInt1(unsigned char op, int i, CompileEnv *envPtr);
+ * void TclEmitInstInt4(unsigned char op, int i, CompileEnv *envPtr);
  */
 
-
 #define TclEmitInstInt1(op, i, envPtr) \
     if (((envPtr)->codeNext + 2) > (envPtr)->codeEnd) { \
-        TclExpandCodeArray(envPtr); \
+	TclExpandCodeArray(envPtr); \
     } \
     *(envPtr)->codeNext++ = (unsigned char) (op); \
     *(envPtr)->codeNext++ = (unsigned char) ((unsigned int) (i));\
+    (envPtr)->atCmdStart = ((op) == INST_START_CMD); \
     TclUpdateStackReqs(op, i, envPtr)
 
 #define TclEmitInstInt4(op, i, envPtr) \
     if (((envPtr)->codeNext + 5) > (envPtr)->codeEnd) { \
-        TclExpandCodeArray(envPtr); \
+	TclExpandCodeArray(envPtr); \
     } \
     *(envPtr)->codeNext++ = (unsigned char) (op); \
     *(envPtr)->codeNext++ = \
-        (unsigned char) ((unsigned int) (i) >> 24); \
+	(unsigned char) ((unsigned int) (i) >> 24); \
     *(envPtr)->codeNext++ = \
-        (unsigned char) ((unsigned int) (i) >> 16); \
+	(unsigned char) ((unsigned int) (i) >> 16); \
     *(envPtr)->codeNext++ = \
-        (unsigned char) ((unsigned int) (i) >>  8); \
+	(unsigned char) ((unsigned int) (i) >>  8); \
     *(envPtr)->codeNext++ = \
-        (unsigned char) ((unsigned int) (i)      );\
+	(unsigned char) ((unsigned int) (i)      );\
+    (envPtr)->atCmdStart = ((op) == INST_START_CMD); \
     TclUpdateStackReqs(op, i, envPtr)
-    
+
 /*
  * Macro to push a Tcl object onto the Tcl evaluation stack. It emits the
- * object's one or four byte array index into the CompileEnv's code
- * array. These support, respectively, a maximum of 256 (2**8) and 2**32
- * objects in a CompileEnv. The ANSI C "prototype" for this macro is:
+ * object's one or four byte array index into the CompileEnv's code array.
+ * These support, respectively, a maximum of 256 (2**8) and 2**32 objects in a
+ * CompileEnv. The ANSI C "prototype" for this macro is:
  *
- * EXTERN void	TclEmitPush _ANSI_ARGS_((int objIndex, CompileEnv *envPtr));
+ * void	TclEmitPush(int objIndex, CompileEnv *envPtr);
  */
 
 #define TclEmitPush(objIndex, envPtr) \
     {\
-        register int objIndexCopy = (objIndex);\
-        if (objIndexCopy <= 255) { \
+	register int objIndexCopy = (objIndex);\
+	if (objIndexCopy <= 255) { \
 	    TclEmitInstInt1(INST_PUSH1, objIndexCopy, (envPtr)); \
-        } else { \
+	} else { \
 	    TclEmitInstInt4(INST_PUSH4, objIndexCopy, (envPtr)); \
 	}\
     }
 
 /*
- * Macros to update a (signed or unsigned) integer starting at a pointer.
- * The two variants depend on the number of bytes. The ANSI C "prototypes"
- * for these macros are:
+ * Macros to update a (signed or unsigned) integer starting at a pointer. The
+ * two variants depend on the number of bytes. The ANSI C "prototypes" for
+ * these macros are:
  *
- * EXTERN void	TclStoreInt1AtPtr _ANSI_ARGS_((int i, unsigned char *p));
- * EXTERN void	TclStoreInt4AtPtr _ANSI_ARGS_((int i, unsigned char *p));
+ * void TclStoreInt1AtPtr(int i, unsigned char *p);
+ * void TclStoreInt4AtPtr(int i, unsigned char *p);
  */
-    
+
 #define TclStoreInt1AtPtr(i, p) \
     *(p)   = (unsigned char) ((unsigned int) (i))
-    
+
 #define TclStoreInt4AtPtr(i, p) \
     *(p)   = (unsigned char) ((unsigned int) (i) >> 24); \
     *(p+1) = (unsigned char) ((unsigned int) (i) >> 16); \
@@ -1025,14 +1146,12 @@ EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
     *(p+3) = (unsigned char) ((unsigned int) (i)      )
 
 /*
- * Macros to update instructions at a particular pc with a new op code
- * and a (signed or unsigned) int operand. The ANSI C "prototypes" for
- * these macros are:
+ * Macros to update instructions at a particular pc with a new op code and a
+ * (signed or unsigned) int operand. The ANSI C "prototypes" for these macros
+ * are:
  *
- * EXTERN void	TclUpdateInstInt1AtPc _ANSI_ARGS_((unsigned char op, int i,
- *		    unsigned char *pc));
- * EXTERN void	TclUpdateInstInt4AtPc _ANSI_ARGS_((unsigned char op, int i,
- *		    unsigned char *pc));
+ * void TclUpdateInstInt1AtPc(unsigned char op, int i, unsigned char *pc);
+ * void TclUpdateInstInt4AtPc(unsigned char op, int i, unsigned char *pc);
  */
 
 #define TclUpdateInstInt1AtPc(op, i, pc) \
@@ -1042,26 +1161,39 @@ EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
 #define TclUpdateInstInt4AtPc(op, i, pc) \
     *(pc) = (unsigned char) (op); \
     TclStoreInt4AtPtr((i), ((pc)+1))
-    
+
+/*
+ * Macro to fix up a forward jump to point to the current code-generation
+ * position in the bytecode being created (the most common case). The ANSI C
+ * "prototypes" for this macro is:
+ *
+ * int TclFixupForwardJumpToHere(CompileEnv *envPtr, JumpFixup *fixupPtr,
+ *				 int threshold);
+ */
+
+#define TclFixupForwardJumpToHere(envPtr, fixupPtr, threshold) \
+    TclFixupForwardJump((envPtr), (fixupPtr), \
+	    (envPtr)->codeNext-(envPtr)->codeStart-(fixupPtr)->codeOffset, \
+	    (threshold))
+
 /*
  * Macros to get a signed integer (GET_INT{1,2}) or an unsigned int
- * (GET_UINT{1,2}) from a pointer. There are two variants for each
- * return type that depend on the number of bytes fetched.
- * The ANSI C "prototypes" for these macros are:
+ * (GET_UINT{1,2}) from a pointer. There are two variants for each return type
+ * that depend on the number of bytes fetched. The ANSI C "prototypes" for
+ * these macros are:
  *
- * EXTERN int	        TclGetInt1AtPtr  _ANSI_ARGS_((unsigned char *p));
- * EXTERN int	        TclGetInt4AtPtr  _ANSI_ARGS_((unsigned char *p));
- * EXTERN unsigned int	TclGetUInt1AtPtr _ANSI_ARGS_((unsigned char *p));
- * EXTERN unsigned int	TclGetUInt4AtPtr _ANSI_ARGS_((unsigned char *p));
+ * int TclGetInt1AtPtr(unsigned char *p);
+ * int TclGetInt4AtPtr(unsigned char *p);
+ * unsigned int TclGetUInt1AtPtr(unsigned char *p);
+ * unsigned int TclGetUInt4AtPtr(unsigned char *p);
  */
 
 /*
- * The TclGetInt1AtPtr macro is tricky because we want to do sign
- * extension on the 1-byte value. Unfortunately the "char" type isn't
- * signed on all platforms so sign-extension doesn't always happen
- * automatically. Sometimes we can explicitly declare the pointer to be
- * signed, but other times we have to explicitly sign-extend the value
- * in software.
+ * The TclGetInt1AtPtr macro is tricky because we want to do sign extension on
+ * the 1-byte value. Unfortunately the "char" type isn't signed on all
+ * platforms so sign-extension doesn't always happen automatically. Sometimes
+ * we can explicitly declare the pointer to be signed, but other times we have
+ * to explicitly sign-extend the value in software.
  */
 
 #ifndef __CHAR_UNSIGNED__
@@ -1069,29 +1201,29 @@ EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
 #else
 #   ifdef HAVE_SIGNED_CHAR
 #	define TclGetInt1AtPtr(p) ((int) *((signed char *) p))
-#    else
+#   else
 #	define TclGetInt1AtPtr(p) (((int) *((char *) p)) \
 		| ((*(p) & 0200) ? (-256) : 0))
-#    endif
+#   endif
 #endif
 
 #define TclGetInt4AtPtr(p) (((int) TclGetInt1AtPtr(p) << 24) | \
-		                  	    (*((p)+1) << 16) | \
+					    (*((p)+1) << 16) | \
 				  	    (*((p)+2) <<  8) | \
 				  	    (*((p)+3)))
 
 #define TclGetUInt1AtPtr(p) ((unsigned int) *(p))
 #define TclGetUInt4AtPtr(p) ((unsigned int) (*(p)     << 24) | \
-		                            (*((p)+1) << 16) | \
-				            (*((p)+2) <<  8) | \
-				            (*((p)+3)))
+					    (*((p)+1) << 16) | \
+					    (*((p)+2) <<  8) | \
+					    (*((p)+3)))
 
 /*
- * Macros used to compute the minimum and maximum of two integers.
- * The ANSI C "prototypes" for these macros are:
+ * Macros used to compute the minimum and maximum of two integers. The ANSI C
+ * "prototypes" for these macros are:
  *
- * EXTERN int  TclMin _ANSI_ARGS_((int i, int j));
- * EXTERN int  TclMax _ANSI_ARGS_((int i, int j));
+ * int TclMin(int i, int j);
+ * int TclMax(int i, int j);
  */
 
 #define TclMin(i, j)   ((((int) i) < ((int) j))? (i) : (j))
@@ -1137,21 +1269,27 @@ EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
 #define TCL_DTRACE_PROC_RETURN_ENABLED()    unlikely(TCL_PROC_RETURN_ENABLED())
 #define TCL_DTRACE_PROC_RESULT_ENABLED()    unlikely(TCL_PROC_RESULT_ENABLED())
 #define TCL_DTRACE_PROC_ARGS_ENABLED()	    unlikely(TCL_PROC_ARGS_ENABLED())
+#define TCL_DTRACE_PROC_INFO_ENABLED()	    unlikely(TCL_PROC_INFO_ENABLED())
 #define TCL_DTRACE_PROC_ENTRY(a0, a1, a2)   TCL_PROC_ENTRY(a0, a1, a2)
 #define TCL_DTRACE_PROC_RETURN(a0, a1)	    TCL_PROC_RETURN(a0, a1)
 #define TCL_DTRACE_PROC_RESULT(a0, a1, a2, a3) TCL_PROC_RESULT(a0, a1, a2, a3)
 #define TCL_DTRACE_PROC_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) \
 	TCL_PROC_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
+#define TCL_DTRACE_PROC_INFO(a0, a1, a2, a3, a4, a5) \
+	TCL_PROC_INFO(a0, a1, a2, a3, a4, a5)
 
 #define TCL_DTRACE_CMD_ENTRY_ENABLED()	    unlikely(TCL_CMD_ENTRY_ENABLED())
 #define TCL_DTRACE_CMD_RETURN_ENABLED()	    unlikely(TCL_CMD_RETURN_ENABLED())
 #define TCL_DTRACE_CMD_RESULT_ENABLED()	    unlikely(TCL_CMD_RESULT_ENABLED())
 #define TCL_DTRACE_CMD_ARGS_ENABLED()	    unlikely(TCL_CMD_ARGS_ENABLED())
+#define TCL_DTRACE_CMD_INFO_ENABLED()	    unlikely(TCL_CMD_INFO_ENABLED())
 #define TCL_DTRACE_CMD_ENTRY(a0, a1, a2)    TCL_CMD_ENTRY(a0, a1, a2)
 #define TCL_DTRACE_CMD_RETURN(a0, a1)	    TCL_CMD_RETURN(a0, a1)
 #define TCL_DTRACE_CMD_RESULT(a0, a1, a2, a3) TCL_CMD_RESULT(a0, a1, a2, a3)
 #define TCL_DTRACE_CMD_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) \
 	TCL_CMD_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
+#define TCL_DTRACE_CMD_INFO(a0, a1, a2, a3, a4, a5) \
+	TCL_CMD_INFO(a0, a1, a2, a3, a4, a5)
 
 #define TCL_DTRACE_INST_START_ENABLED()	    unlikely(TCL_INST_START_ENABLED())
 #define TCL_DTRACE_INST_DONE_ENABLED()	    unlikely(TCL_INST_DONE_ENABLED())
@@ -1164,25 +1302,31 @@ EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
 
 #define TCL_DTRACE_DEBUG_LOG()
 
+MODULE_SCOPE void TclDTraceInfo(Tcl_Obj *info, char **args, int *argsi);
+
 #else /* USE_DTRACE */
 
 #define TCL_DTRACE_PROC_ENTRY_ENABLED()	    0
 #define TCL_DTRACE_PROC_RETURN_ENABLED()    0
 #define TCL_DTRACE_PROC_RESULT_ENABLED()    0
 #define TCL_DTRACE_PROC_ARGS_ENABLED()	    0
+#define TCL_DTRACE_PROC_INFO_ENABLED()	    0
 #define TCL_DTRACE_PROC_ENTRY(a0, a1, a2)   {}
 #define TCL_DTRACE_PROC_RETURN(a0, a1)	    {}
 #define TCL_DTRACE_PROC_RESULT(a0, a1, a2, a3) {}
 #define TCL_DTRACE_PROC_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {}
+#define TCL_DTRACE_PROC_INFO(a0, a1, a2, a3, a4, a5) {}
 
 #define TCL_DTRACE_CMD_ENTRY_ENABLED()	    0
 #define TCL_DTRACE_CMD_RETURN_ENABLED()	    0
 #define TCL_DTRACE_CMD_RESULT_ENABLED()	    0
 #define TCL_DTRACE_CMD_ARGS_ENABLED()	    0
+#define TCL_DTRACE_CMD_INFO_ENABLED()	    0
 #define TCL_DTRACE_CMD_ENTRY(a0, a1, a2)    {}
 #define TCL_DTRACE_CMD_RETURN(a0, a1)	    {}
 #define TCL_DTRACE_CMD_RESULT(a0, a1, a2, a3) {}
 #define TCL_DTRACE_CMD_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {}
+#define TCL_DTRACE_CMD_INFO(a0, a1, a2, a3, a4, a5) {}
 
 #define TCL_DTRACE_INST_START_ENABLED()	    0
 #define TCL_DTRACE_INST_DONE_ENABLED()	    0
@@ -1192,6 +1336,8 @@ EXTERN int		TclCompileVariableCmd _ANSI_ARGS_((
 #define TCL_DTRACE_TCL_PROBE_ENABLED()	    0
 #define TCL_DTRACE_TCL_PROBE(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {}
 
+#define TclDTraceInfo(info, args, argsi)    {*args = ""; *argsi = 0;}
+
 #endif /* USE_DTRACE */
 
 #else /* TCL_DTRACE_DEBUG */
@@ -1237,6 +1383,7 @@ MODULE_SCOPE void TclDTraceInfo(Tcl_Obj *info, char **args, int *argsi);
 #define TCL_DTRACE_PROC_RETURN_ENABLED()    1
 #define TCL_DTRACE_PROC_RESULT_ENABLED()    1
 #define TCL_DTRACE_PROC_ARGS_ENABLED()	    1
+#define TCL_DTRACE_PROC_INFO_ENABLED()	    1
 #define TCL_DTRACE_PROC_ENTRY(a0, a1, a2) \
 	tclDTraceDebugIndent++; \
 	TclDTraceDbgMsg("-> proc-entry", "%s %d %p", a0, a1, a2)
@@ -1248,11 +1395,15 @@ MODULE_SCOPE void TclDTraceInfo(Tcl_Obj *info, char **args, int *argsi);
 #define TCL_DTRACE_PROC_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) \
 	TclDTraceDbgMsg(" | proc-args", "%s %s %s %s %s %s %s %s %s %s", a0, \
 		a1, a2, a3, a4, a5, a6, a7, a8, a9)
+#define TCL_DTRACE_PROC_INFO(a0, a1, a2, a3, a4, a5) \
+	TclDTraceDbgMsg(" | proc-info", "%s %s %s %s %d %d", a0, a1, \
+		a2, a3, a4, a5)
 
 #define TCL_DTRACE_CMD_ENTRY_ENABLED()	    1
 #define TCL_DTRACE_CMD_RETURN_ENABLED()	    1
 #define TCL_DTRACE_CMD_RESULT_ENABLED()	    1
 #define TCL_DTRACE_CMD_ARGS_ENABLED()	    1
+#define TCL_DTRACE_CMD_INFO_ENABLED()	    1
 #define TCL_DTRACE_CMD_ENTRY(a0, a1, a2) \
 	tclDTraceDebugIndent++; \
 	TclDTraceDbgMsg("-> cmd-entry", "%s %d %p", a0, a1, a2)
@@ -1264,6 +1415,9 @@ MODULE_SCOPE void TclDTraceInfo(Tcl_Obj *info, char **args, int *argsi);
 #define TCL_DTRACE_CMD_ARGS(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) \
 	TclDTraceDbgMsg(" | cmd-args", "%s %s %s %s %s %s %s %s %s %s", a0, \
 		a1, a2, a3, a4, a5, a6, a7, a8, a9)
+#define TCL_DTRACE_CMD_INFO(a0, a1, a2, a3, a4, a5) \
+	TclDTraceDbgMsg(" | cmd-info", "%s %s %s %s %d %d", a0, a1, \
+		a2, a3, a4, a5)
 
 #define TCL_DTRACE_INST_START_ENABLED()	    TCL_DTRACE_DEBUG_INST_PROBES
 #define TCL_DTRACE_INST_DONE_ENABLED()	    TCL_DTRACE_DEBUG_INST_PROBES
@@ -1280,7 +1434,12 @@ MODULE_SCOPE void TclDTraceInfo(Tcl_Obj *info, char **args, int *argsi);
 
 #endif /* TCL_DTRACE_DEBUG */
 
-# undef TCL_STORAGE_CLASS
-# define TCL_STORAGE_CLASS DLLIMPORT
-
 #endif /* _TCLCOMPILATION */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclConfig.c b/generic/tclConfig.c
new file mode 100644
index 0000000..28549ed
--- /dev/null
+++ b/generic/tclConfig.c
@@ -0,0 +1,392 @@
+/*
+ * tclConfig.c --
+ *
+ *	This file provides the facilities which allow Tcl and other packages
+ *	to embed configuration information into their binary libraries.
+ *
+ * Copyright (c) 2002 Andreas Kupries <andreas_kupries@users.sourceforge.net>
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+/*
+ * Internal structure to hold embedded configuration information.
+ *
+ * Our structure is a two-level dictionary associated with the 'interp'. The
+ * first level is keyed with the package name and maps to the dictionary for
+ * that package. The package dictionary is keyed with metadata keys and maps
+ * to the metadata value for that key. This is package specific. The metadata
+ * values are in UTF-8, converted from the external representation given to us
+ * by the caller.
+ */
+
+#define ASSOC_KEY	"tclPackageAboutDict"
+
+/*
+ * A ClientData struct for the QueryConfig command.  Store the two bits
+ * of data we need; the package name for which we store a config dict,
+ * and the (Tcl_Interp *) in which it is stored.
+ */
+
+typedef struct QCCD {
+    Tcl_Obj *pkg;
+    Tcl_Interp *interp;
+} QCCD;
+
+/*
+ * Static functions in this file:
+ */
+
+static int		QueryConfigObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    struct Tcl_Obj *CONST *objv);
+static void		QueryConfigDelete(ClientData clientData);
+static Tcl_Obj *	GetConfigDict(Tcl_Interp *interp);
+static void		ConfigDictDeleteProc(ClientData clientData,
+			    Tcl_Interp *interp);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_RegisterConfig --
+ *
+ *	See TIP#59 for details on what this function does.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Creates namespace and cfg query command in it as per TIP #59.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_RegisterConfig(
+    Tcl_Interp *interp,		/* Interpreter the configuration command is
+				 * registered in. */
+    CONST char *pkgName,	/* Name of the package registering the
+				 * embedded configuration. ASCII, thus in
+				 * UTF-8 too. */
+    Tcl_Config *configuration,	/* Embedded configuration. */
+    CONST char *valEncoding)	/* Name of the encoding used to store the
+				 * configuration values, ASCII, thus UTF-8. */
+{
+    Tcl_Obj *pDB, *pkgDict;
+    Tcl_DString cmdName;
+    Tcl_Config *cfg;
+    Tcl_Encoding venc = Tcl_GetEncoding(NULL, valEncoding);
+    QCCD *cdPtr = (QCCD *)ckalloc(sizeof(QCCD));
+
+    cdPtr->interp = interp;
+    cdPtr->pkg = Tcl_NewStringObj(pkgName, -1);
+
+    /*
+     * Phase I: Adding the provided information to the internal database of
+     * package meta data. Only if we have an ok encoding.
+     *
+     * Phase II: Create a command for querying this database, specific to the
+     * package registerting its configuration. This is the approved interface
+     * in TIP 59. In the future a more general interface should be done, as
+     * followup to TIP 59. Simply because our database is now general across
+     * packages, and not a structure tied to one package.
+     *
+     * Note, the created command will have a reference through its clientdata.
+     */
+
+    Tcl_IncrRefCount(cdPtr->pkg);
+
+    /*
+     * For venc == NULL aka bogus encoding we skip the step setting up the
+     * dictionaries visible at Tcl level. I.e. they are not filled
+     */
+
+    if (venc != NULL) {
+	/*
+	 * Retrieve package specific configuration...
+	 */
+
+	pDB = GetConfigDict(interp);
+
+	if (Tcl_DictObjGet(interp, pDB, cdPtr->pkg, &pkgDict) != TCL_OK
+	    || (pkgDict == NULL)) {
+	    pkgDict = Tcl_NewDictObj();
+	} else if (Tcl_IsShared(pkgDict)) {
+	    pkgDict = Tcl_DuplicateObj(pkgDict);
+	}
+
+	/*
+	 * Extend the package configuration...
+	 */
+
+	for (cfg=configuration ; cfg->key!=NULL && cfg->key[0]!='\0' ; cfg++) {
+	    Tcl_DString conv;
+	    CONST char *convValue =
+		Tcl_ExternalToUtfDString(venc, cfg->value, -1, &conv);
+
+	    /*
+	     * We know that the keys are in ASCII/UTF-8, so for them is no
+	     * conversion required.
+	     */
+
+	    Tcl_DictObjPut(interp, pkgDict, Tcl_NewStringObj(cfg->key, -1),
+			   Tcl_NewStringObj(convValue, -1));
+	    Tcl_DStringFree(&conv);
+	}
+
+	/*
+	 * We're now done with the encoding, so drop it.
+	 */
+
+	Tcl_FreeEncoding(venc);
+
+	/*
+	 * Write the changes back into the overall database.
+	 */
+
+	Tcl_DictObjPut(interp, pDB, cdPtr->pkg, pkgDict);
+    }
+
+    /*
+     * Now create the interface command for retrieval of the package
+     * information.
+     */
+
+    Tcl_DStringInit(&cmdName);
+    Tcl_DStringAppend(&cmdName, "::", -1);
+    Tcl_DStringAppend(&cmdName, pkgName, -1);
+
+    /*
+     * The incomplete command name is the name of the namespace to place it
+     * in.
+     */
+
+    if (Tcl_FindNamespace(interp, Tcl_DStringValue(&cmdName), NULL,
+	    TCL_GLOBAL_ONLY) == NULL) {
+	if (Tcl_CreateNamespace(interp, Tcl_DStringValue(&cmdName),
+		NULL, NULL) == NULL) {
+	    Tcl_Panic("%s.\n%s: %s",
+		    Tcl_GetStringResult(interp), "Tcl_RegisterConfig",
+		    "Unable to create namespace for package configuration.");
+	}
+    }
+
+    Tcl_DStringAppend(&cmdName, "::pkgconfig", -1);
+
+    if (Tcl_CreateObjCommand(interp, Tcl_DStringValue(&cmdName),
+	    QueryConfigObjCmd, (ClientData) cdPtr, QueryConfigDelete) == NULL) {
+        Tcl_Panic("%s: %s", "Tcl_RegisterConfig",
+		"Unable to create query command for package configuration");
+    }
+
+    Tcl_DStringFree(&cmdName);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * QueryConfigObjCmd --
+ *
+ *	Implementation of "::<package>::pkgconfig", the command to query
+ *	configuration information embedded into a binary library.
+ *
+ * Results:
+ *	A standard tcl result.
+ *
+ * Side effects:
+ *	See the manual for what this command does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+QueryConfigObjCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    struct Tcl_Obj *CONST *objv)
+{
+    QCCD *cdPtr = (QCCD *) clientData;
+    Tcl_Obj *pkgName = cdPtr->pkg;
+    Tcl_Obj *pDB, *pkgDict, *val, *listPtr;
+    int n, index;
+    static const char *subcmdStrings[] = {
+	"get", "list", NULL
+    };
+    enum subcmds {
+	CFG_GET, CFG_LIST
+    };
+
+    if ((objc < 2) || (objc > 3)) {
+	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?argument?");
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIndexFromObj(interp, objv[1], subcmdStrings, "subcommand", 0,
+	    &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    pDB = GetConfigDict(interp);
+    if (Tcl_DictObjGet(interp, pDB, pkgName, &pkgDict) != TCL_OK
+	    || pkgDict == NULL) {
+        /*
+	 * Maybe a Tcl_Panic is better, because the package data has to be
+	 * present.
+	 */
+
+        Tcl_SetResult(interp, "package not known", TCL_STATIC);
+	return TCL_ERROR;
+    }
+
+    switch ((enum subcmds) index) {
+    case CFG_GET:
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "key");
+	    return TCL_ERROR;
+	}
+
+	if (Tcl_DictObjGet(interp, pkgDict, objv [2], &val) != TCL_OK
+		|| val == NULL) {
+	    Tcl_SetResult(interp, "key not known", TCL_STATIC);
+	    return TCL_ERROR;
+	}
+
+	Tcl_SetObjResult(interp, val);
+	return TCL_OK;
+
+    case CFG_LIST:
+	if (objc != 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
+	}
+
+	Tcl_DictObjSize(interp, pkgDict, &n);
+	listPtr = Tcl_NewListObj(n, NULL);
+
+	if (!listPtr) {
+	    Tcl_SetResult(interp, "insufficient memory to create list",
+		    TCL_STATIC);
+	    return TCL_ERROR;
+	}
+
+	if (n) {
+	    Tcl_DictSearch s;
+	    Tcl_Obj *key;
+	    int done;
+
+	    for (Tcl_DictObjFirst(interp, pkgDict, &s, &key, NULL, &done);
+		    !done; Tcl_DictObjNext(&s, &key, NULL, &done)) {
+		Tcl_ListObjAppendElement(NULL, listPtr, key);
+	    }
+	}
+
+	Tcl_SetObjResult(interp, listPtr);
+	return TCL_OK;
+
+    default:
+	Tcl_Panic("QueryConfigObjCmd: Unknown subcommand to 'pkgconfig'. This can't happen");
+	break;
+    }
+    return TCL_ERROR;
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * QueryConfigDelete --
+ *
+ *	Command delete function. Cleans up after the configuration query
+ *	command when it is deleted by the user or during finalization.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Deallocates all non-transient memory allocated by Tcl_RegisterConfig.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static void
+QueryConfigDelete(
+    ClientData clientData)
+{
+    QCCD *cdPtr = (QCCD *) clientData;
+    Tcl_Obj *pkgName = cdPtr->pkg;
+    Tcl_Obj *pDB = GetConfigDict(cdPtr->interp);
+    Tcl_DictObjRemove(NULL, pDB, pkgName);
+    Tcl_DecrRefCount(pkgName);
+    ckfree((char *)cdPtr);
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * GetConfigDict --
+ *
+ *	Retrieve the package metadata database from the interpreter.
+ *	Initializes it, if not present yet.
+ *
+ * Results:
+ *	A Tcl_Obj reference
+ *
+ * Side effects:
+ *	May allocate a Tcl_Obj.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+GetConfigDict(
+    Tcl_Interp *interp)
+{
+    Tcl_Obj *pDB = Tcl_GetAssocData(interp, ASSOC_KEY, NULL);
+
+    if (pDB == NULL) {
+	pDB = Tcl_NewDictObj();
+	Tcl_IncrRefCount(pDB);
+	Tcl_SetAssocData(interp, ASSOC_KEY, ConfigDictDeleteProc, pDB);
+    }
+
+    return pDB;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ConfigDictDeleteProc --
+ *
+ *	This function is associated with the "Package About dict" assoc data
+ *	for an interpreter; it is invoked when the interpreter is deleted in
+ *	order to free the information assoicated with any pending error
+ *	reports.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The package metadata database is freed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ConfigDictDeleteProc(
+    ClientData clientData,	/* Pointer to Tcl_Obj. */
+    Tcl_Interp *interp)		/* Interpreter being deleted. */
+{
+    Tcl_Obj *pDB = (Tcl_Obj *) clientData;
+
+    Tcl_DecrRefCount(pDB);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclDTrace.d b/generic/tclDTrace.d
index 1713de5..4e4d3a4 100644
--- a/generic/tclDTrace.d
+++ b/generic/tclDTrace.d
@@ -51,6 +51,19 @@ provider tcl {
     probe proc__args(char* name, char* arg1, char* arg2, char* arg3,
 	    char* arg4, char* arg5, char* arg6, char* arg7, char* arg8,
 	    char* arg9);
+    /*
+     *	tcl*:::proc-info probe
+     *	    triggered before proc-entry probe, gives access to TIP 280
+     *	    information for the proc invocation (i.e. [info frame 0])
+     *		arg0: TIP 280 cmd			(string)
+     *		arg1: TIP 280 type			(string)
+     *		arg2: TIP 280 proc			(string)
+     *		arg3: TIP 280 file			(string)
+     *		arg4: TIP 280 line			(int)
+     *		arg5: TIP 280 level			(int)
+     */
+    probe proc__info(char* cmd, char* type, char* proc, char* file, int line,
+	    int level);
 
     /***************************** cmd probes ******************************/
     /*
@@ -87,6 +100,19 @@ provider tcl {
     probe cmd__args(char* name, char* arg1, char* arg2, char* arg3,
 	    char* arg4, char* arg5, char* arg6, char* arg7, char* arg8,
 	    char* arg9);
+    /*
+     *	tcl*:::cmd-info probe
+     *	    triggered before cmd-entry probe, gives access to TIP 280
+     *	    information for the command invocation (i.e. [info frame 0])
+     *		arg0: TIP 280 cmd			(string)
+     *		arg1: TIP 280 type			(string)
+     *		arg2: TIP 280 proc			(string)
+     *		arg3: TIP 280 file			(string)
+     *		arg4: TIP 280 line			(int)
+     *		arg5: TIP 280 level			(int)
+     */
+    probe cmd__info(char* cmd, char* type, char* proc, char* file, int line,
+	    int level);
 
     /***************************** inst probes *****************************/
     /*
@@ -157,6 +183,10 @@ struct Tcl_Obj {
 	    void *ptr1;
 	    void *ptr2;
 	} twoPtrValue;
+	struct {
+	    void *ptr;
+	    unsigned long value;
+	} ptrAndLongRep;
     } internalRep;
 };
 
diff --git a/generic/tclDate.c b/generic/tclDate.c
index 0475e58..59da2ea 100644
--- a/generic/tclDate.c
+++ b/generic/tclDate.c
@@ -1,657 +1,2567 @@
-/* 
+/* A Bison parser, made by GNU Bison 2.3.  */
+
+/* Skeleton implementation for Bison's Yacc-like parsers in C
+
+   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
+   Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+/* As a special exception, you may create a larger work that contains
+   part or all of the Bison parser skeleton and distribute that work
+   under terms of your choice, so long as that work isn't itself a
+   parser generator using the skeleton or a modified version thereof
+   as a parser skeleton.  Alternatively, if you modify or redistribute
+   the parser skeleton itself, you may (at your option) remove this
+   special exception, which will cause the skeleton and the resulting
+   Bison output files to be licensed under the GNU General Public
+   License without this special exception.
+
+   This special exception was added by the Free Software Foundation in
+   version 2.2 of Bison.  */
+
+/* C LALR(1) parser skeleton written by Richard Stallman, by
+   simplifying the original so-called "semantic" parser.  */
+
+/* All symbols defined below should begin with yy or YY, to avoid
+   infringing on user name space.  This should be done even for local
+   variables, as they might otherwise be expanded by user macros.
+   There are some unavoidable exceptions within include files to
+   define necessary library symbols; they are noted "INFRINGES ON
+   USER NAME SPACE" below.  */
+
+/* Identify Bison output.  */
+#define YYBISON 1
+
+/* Bison version.  */
+#define YYBISON_VERSION "2.3"
+
+/* Skeleton name.  */
+#define YYSKELETON_NAME "yacc.c"
+
+/* Pure parsers.  */
+#define YYPURE 1
+
+/* Using locations.  */
+#define YYLSP_NEEDED 1
+
+/* Substitute the variable and function names.  */
+#define yyparse TclDateparse
+#define yylex   TclDatelex
+#define yyerror TclDateerror
+#define yylval  TclDatelval
+#define yychar  TclDatechar
+#define yydebug TclDatedebug
+#define yynerrs TclDatenerrs
+#define yylloc TclDatelloc
+
+/* Tokens.  */
+#ifndef YYTOKENTYPE
+# define YYTOKENTYPE
+   /* Put the tokens into the symbol table, so that GDB and other debuggers
+      know about them.  */
+   enum yytokentype {
+     tAGO = 258,
+     tDAY = 259,
+     tDAYZONE = 260,
+     tID = 261,
+     tMERIDIAN = 262,
+     tMONTH = 263,
+     tMONTH_UNIT = 264,
+     tSTARDATE = 265,
+     tSEC_UNIT = 266,
+     tSNUMBER = 267,
+     tUNUMBER = 268,
+     tZONE = 269,
+     tEPOCH = 270,
+     tDST = 271,
+     tISOBASE = 272,
+     tDAY_UNIT = 273,
+     tNEXT = 274
+   };
+#endif
+/* Tokens.  */
+#define tAGO 258
+#define tDAY 259
+#define tDAYZONE 260
+#define tID 261
+#define tMERIDIAN 262
+#define tMONTH 263
+#define tMONTH_UNIT 264
+#define tSTARDATE 265
+#define tSEC_UNIT 266
+#define tSNUMBER 267
+#define tUNUMBER 268
+#define tZONE 269
+#define tEPOCH 270
+#define tDST 271
+#define tISOBASE 272
+#define tDAY_UNIT 273
+#define tNEXT 274
+
+
+
+
+/* Copy the first part of user declarations.  */
+
+
+/*
  * tclDate.c --
  *
- *	This file is generated from a yacc grammar defined in
- *	the file tclGetDate.y.  It should not be edited directly.
+ *	This file is generated from a yacc grammar defined in the file
+ *	tclGetDate.y. It should not be edited directly.
  *
  * Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans.
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
-
 #include "tclInt.h"
-#include "tclPort.h"
 
-#define EPOCH           1970
-#define START_OF_TIME   1902
-#define END_OF_TIME     2037
+/*
+ * Bison generates several labels that happen to be unused. MS Visual C++
+ * doesn't like that, and complains. Tell it to shut up.
+ */
+
+#ifdef _MSC_VER
+#pragma warning( disable : 4102 )
+#endif /* _MSC_VER */
+
+/*
+ * yyparse will accept a 'struct DateInfo' as its parameter; that's where the
+ * parsed fields will be returned.
+ */
+
+typedef struct DateInfo {
+
+    Tcl_Obj* messages;		/* Error messages */
+    const char* separatrix;	/* String separating messages */
+
+    time_t dateYear;
+    time_t dateMonth;
+    time_t dateDay;
+    int dateHaveDate;
+
+    time_t dateHour;
+    time_t dateMinutes;
+    time_t dateSeconds;
+    int dateMeridian;
+    int dateHaveTime;
+
+    time_t dateTimezone;
+    int dateDSTmode;
+    int dateHaveZone;
+
+    time_t dateRelMonth;
+    time_t dateRelDay;
+    time_t dateRelSeconds;
+    int dateHaveRel;
+
+    time_t dateMonthOrdinal;
+    int dateHaveOrdinalMonth;
+
+    time_t dateDayOrdinal;
+    time_t dateDayNumber;
+    int dateHaveDay;
+
+    const char *dateStart;
+    const char *dateInput;
+    time_t *dateRelPointer;
+
+    int dateDigitCount;
+} DateInfo;
+
+#define YYMALLOC	ckalloc
+#define YYFREE(x)	(ckfree((void*) (x)))
+
+#define yyDSTmode	(info->dateDSTmode)
+#define yyDayOrdinal	(info->dateDayOrdinal)
+#define yyDayNumber	(info->dateDayNumber)
+#define yyMonthOrdinal	(info->dateMonthOrdinal)
+#define yyHaveDate	(info->dateHaveDate)
+#define yyHaveDay	(info->dateHaveDay)
+#define yyHaveOrdinalMonth (info->dateHaveOrdinalMonth)
+#define yyHaveRel	(info->dateHaveRel)
+#define yyHaveTime	(info->dateHaveTime)
+#define yyHaveZone	(info->dateHaveZone)
+#define yyTimezone	(info->dateTimezone)
+#define yyDay		(info->dateDay)
+#define yyMonth		(info->dateMonth)
+#define yyYear		(info->dateYear)
+#define yyHour		(info->dateHour)
+#define yyMinutes	(info->dateMinutes)
+#define yySeconds	(info->dateSeconds)
+#define yyMeridian	(info->dateMeridian)
+#define yyRelMonth	(info->dateRelMonth)
+#define yyRelDay	(info->dateRelDay)
+#define yyRelSeconds	(info->dateRelSeconds)
+#define yyRelPointer	(info->dateRelPointer)
+#define yyInput		(info->dateInput)
+#define yyDigitCount	(info->dateDigitCount)
+
+#define EPOCH		1970
+#define START_OF_TIME	1902
+#define END_OF_TIME	2037
 
 /*
  * The offset of tm_year of struct tm returned by localtime, gmtime, etc.
- * I don't know how universal this is; K&R II, the NetBSD manpages, and
- * ../compat/strftime.c all agree that tm_year is the year-1900.  However,
- * some systems may have a different value.  This #define should be the
- * same as in ../compat/strftime.c.
+ * Posix requires 1900.
  */
-#define TM_YEAR_BASE 1900
 
-#define HOUR(x)         ((int) (60 * x))
-#define SECSPERDAY      (24L * 60L * 60L)
-#define IsLeapYear(x)   ((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0))
+#define TM_YEAR_BASE	1900
+
+#define HOUR(x)		((int) (60 * x))
+#define SECSPERDAY	(24L * 60L * 60L)
+#define IsLeapYear(x)	((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0))
 
 /*
- *  An entry in the lexical lookup table.
+ * An entry in the lexical lookup table.
  */
+
 typedef struct _TABLE {
-    char        *name;
-    int         type;
-    time_t      value;
+    const char *name;
+    int type;
+    time_t value;
 } TABLE;
 
-
 /*
- *  Daylight-savings mode:  on, off, or not yet known.
+ * Daylight-savings mode: on, off, or not yet known.
  */
+
 typedef enum _DSTMODE {
     DSTon, DSToff, DSTmaybe
 } DSTMODE;
 
 /*
- *  Meridian:  am, pm, or 24-hour style.
+ * Meridian: am, pm, or 24-hour style.
  */
+
 typedef enum _MERIDIAN {
     MERam, MERpm, MER24
 } MERIDIAN;
 
 
-/*
- *  Global variables.  We could get rid of most of these by using a good
- *  union as the yacc stack.  (This routine was originally written before
- *  yacc had the %union construct.)  Maybe someday; right now we only use
- *  the %union very rarely.
- */
-static char     *TclDateInput;
-static DSTMODE  TclDateDSTmode;
-static time_t   TclDateDayOrdinal;
-static time_t   TclDateDayNumber;
-static time_t   TclDateMonthOrdinal;
-static int      TclDateHaveDate;
-static int      TclDateHaveDay;
-static int      TclDateHaveOrdinalMonth;
-static int      TclDateHaveRel;
-static int      TclDateHaveTime;
-static int      TclDateHaveZone;
-static time_t   TclDateTimezone;
-static time_t   TclDateDay;
-static time_t   TclDateHour;
-static time_t   TclDateMinutes;
-static time_t   TclDateMonth;
-static time_t   TclDateSeconds;
-static time_t   TclDateYear;
-static MERIDIAN TclDateMeridian;
-static time_t   TclDateRelMonth;
-static time_t   TclDateRelDay;
-static time_t   TclDateRelSeconds;
-static time_t  *TclDateRelPointer;
+
+/* Enabling traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG 0
+#endif
+
+/* Enabling verbose error messages.  */
+#ifdef YYERROR_VERBOSE
+# undef YYERROR_VERBOSE
+# define YYERROR_VERBOSE 1
+#else
+# define YYERROR_VERBOSE 0
+#endif
+
+/* Enabling the token table.  */
+#ifndef YYTOKEN_TABLE
+# define YYTOKEN_TABLE 0
+#endif
+
+#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
+typedef union YYSTYPE
+
+{
+    time_t Number;
+    enum _MERIDIAN Meridian;
+}
+/* Line 187 of yacc.c.  */
+
+	YYSTYPE;
+# define yystype YYSTYPE /* obsolescent; will be withdrawn */
+# define YYSTYPE_IS_DECLARED 1
+# define YYSTYPE_IS_TRIVIAL 1
+#endif
+
+#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED
+typedef struct YYLTYPE
+{
+  int first_line;
+  int first_column;
+  int last_line;
+  int last_column;
+} YYLTYPE;
+# define yyltype YYLTYPE /* obsolescent; will be withdrawn */
+# define YYLTYPE_IS_DECLARED 1
+# define YYLTYPE_IS_TRIVIAL 1
+#endif
+
+
+/* Copy the second part of user declarations.  */
+
+
 
 /*
  * Prototypes of internal functions.
  */
-static void	TclDateerror _ANSI_ARGS_((char *s));
-static time_t	ToSeconds _ANSI_ARGS_((time_t Hours, time_t Minutes,
-		    time_t Seconds, MERIDIAN Meridian));
-static int	Convert _ANSI_ARGS_((time_t Month, time_t Day, time_t Year,
-		    time_t Hours, time_t Minutes, time_t Seconds,
-		    MERIDIAN Meridia, DSTMODE DSTmode, time_t *TimePtr));
-static time_t	DSTcorrect _ANSI_ARGS_((time_t Start, time_t Future));
-static time_t	NamedDay _ANSI_ARGS_((time_t Start, time_t DayOrdinal,
-		    time_t DayNumber));
-static time_t   NamedMonth _ANSI_ARGS_((time_t Start, time_t MonthOrdinal,
-                    time_t MonthNumber));
-static int	RelativeMonth _ANSI_ARGS_((time_t Start, time_t RelMonth,
-		    time_t *TimePtr));
-static int	RelativeDay _ANSI_ARGS_((time_t Start, time_t RelDay,
-		    time_t *TimePtr));
-static int	LookupWord _ANSI_ARGS_((char *buff));
-static int	TclDatelex _ANSI_ARGS_((void));
 
-int
-TclDateparse _ANSI_ARGS_((void));
-typedef union
-#ifdef __cplusplus
-	YYSTYPE
+static int		LookupWord(YYSTYPE* yylvalPtr, char *buff);
+ static void		TclDateerror(YYLTYPE* location,
+				     DateInfo* info, const char *s);
+ static int		TclDatelex(YYSTYPE* yylvalPtr, YYLTYPE* location,
+				   DateInfo* info);
+static time_t		ToSeconds(time_t Hours, time_t Minutes,
+			    time_t Seconds, MERIDIAN Meridian);
+MODULE_SCOPE int	yyparse(DateInfo*);
+
+
+
+/* Line 216 of yacc.c.  */
+
+
+#ifdef short
+# undef short
 #endif
- {
-    time_t              Number;
-    enum _MERIDIAN      Meridian;
-} YYSTYPE;
-# define tAGO 257
-# define tDAY 258
-# define tDAYZONE 259
-# define tID 260
-# define tMERIDIAN 261
-# define tMINUTE_UNIT 262
-# define tMONTH 263
-# define tMONTH_UNIT 264
-# define tSTARDATE 265
-# define tSEC_UNIT 266
-# define tSNUMBER 267
-# define tUNUMBER 268
-# define tZONE 269
-# define tEPOCH 270
-# define tDST 271
-# define tISOBASE 272
-# define tDAY_UNIT 273
-# define tNEXT 274
-
-
-
-
-#if defined(__cplusplus) || defined(__STDC__)
-
-#if defined(__cplusplus) && defined(__EXTERN_C__)
-extern "C" {
+
+#ifdef YYTYPE_UINT8
+typedef YYTYPE_UINT8 yytype_uint8;
+#else
+typedef unsigned char yytype_uint8;
 #endif
-#ifndef TclDateerror
-#if defined(__cplusplus)
-	void TclDateerror(CONST char *);
+
+#ifdef YYTYPE_INT8
+typedef YYTYPE_INT8 yytype_int8;
+#elif (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+typedef signed char yytype_int8;
+#else
+typedef short int yytype_int8;
 #endif
+
+#ifdef YYTYPE_UINT16
+typedef YYTYPE_UINT16 yytype_uint16;
+#else
+typedef unsigned short int yytype_uint16;
 #endif
-#ifndef TclDatelex
-	int TclDatelex(void);
+
+#ifdef YYTYPE_INT16
+typedef YYTYPE_INT16 yytype_int16;
+#else
+typedef short int yytype_int16;
 #endif
-	int TclDateparse(void);
-#if defined(__cplusplus) && defined(__EXTERN_C__)
-}
+
+#ifndef YYSIZE_T
+# ifdef __SIZE_TYPE__
+#  define YYSIZE_T __SIZE_TYPE__
+# elif defined size_t
+#  define YYSIZE_T size_t
+# elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYSIZE_T size_t
+# else
+#  define YYSIZE_T unsigned int
+# endif
 #endif
 
+#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
+
+#ifndef YY_
+# if YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
+#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#  endif
+# endif
+# ifndef YY_
+#  define YY_(msgid) msgid
+# endif
 #endif
 
-#define TclDateclearin TclDatechar = -1
-#define TclDateerrok TclDateerrflag = 0
-extern int TclDatechar;
-extern int TclDateerrflag;
-YYSTYPE TclDatelval;
-YYSTYPE TclDateval;
-typedef int TclDatetabelem;
-#ifndef YYMAXDEPTH
-#define YYMAXDEPTH 150
+/* Suppress unused-variable warnings by "using" E.  */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(e) ((void) (e))
+#else
+# define YYUSE(e) /* empty */
+#endif
+
+/* Identity function, used to suppress warnings about constant conditions.  */
+#ifndef lint
+# define YYID(n) (n)
+#else
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static int
+YYID (int i)
+#else
+static int
+YYID (i)
+    int i;
+#endif
+{
+  return i;
+}
 #endif
-#if YYMAXDEPTH > 0
-int TclDate_TclDates[YYMAXDEPTH], *TclDates = TclDate_TclDates;
-YYSTYPE TclDate_TclDatev[YYMAXDEPTH], *TclDatev = TclDate_TclDatev;
-#else	/* user does initial allocation */
-int *TclDates;
-YYSTYPE *TclDatev;
+
+#if ! defined yyoverflow || YYERROR_VERBOSE
+
+/* The parser invokes alloca or malloc; define the necessary symbols.  */
+
+# ifdef YYSTACK_USE_ALLOCA
+#  if YYSTACK_USE_ALLOCA
+#   ifdef __GNUC__
+#    define YYSTACK_ALLOC __builtin_alloca
+#   elif defined __BUILTIN_VA_ARG_INCR
+#    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
+#   elif defined _AIX
+#    define YYSTACK_ALLOC __alloca
+#   elif defined _MSC_VER
+#    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
+#    define alloca _alloca
+#   else
+#    define YYSTACK_ALLOC alloca
+#    if ! defined _ALLOCA_H && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+#     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+#     ifndef _STDLIB_H
+#      define _STDLIB_H 1
+#     endif
+#    endif
+#   endif
+#  endif
+# endif
+
+# ifdef YYSTACK_ALLOC
+   /* Pacify GCC's `empty if-body' warning.  */
+#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
+#  ifndef YYSTACK_ALLOC_MAXIMUM
+    /* The OS might guarantee only one guard page at the bottom of the stack,
+       and a page size can be as small as 4096 bytes.  So we cannot safely
+       invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
+       to allow for a few compiler-allocated temporary stack slots.  */
+#   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
+#  endif
+# else
+#  define YYSTACK_ALLOC YYMALLOC
+#  define YYSTACK_FREE YYFREE
+#  ifndef YYSTACK_ALLOC_MAXIMUM
+#   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
+#  endif
+#  if (defined __cplusplus && ! defined _STDLIB_H \
+       && ! ((defined YYMALLOC || defined malloc) \
+	     && (defined YYFREE || defined free)))
+#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+#   ifndef _STDLIB_H
+#    define _STDLIB_H 1
+#   endif
+#  endif
+#  ifndef YYMALLOC
+#   define YYMALLOC malloc
+#   if ! defined malloc && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
+#   endif
+#  endif
+#  ifndef YYFREE
+#   define YYFREE free
+#   if ! defined free && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+void free (void *); /* INFRINGES ON USER NAME SPACE */
+#   endif
+#  endif
+# endif
+#endif /* ! defined yyoverflow || YYERROR_VERBOSE */
+
+
+#if (! defined yyoverflow \
+     && (! defined __cplusplus \
+	 || (defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
+	     && defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+
+/* A type that is properly aligned for any stack member.  */
+union yyalloc
+{
+  yytype_int16 yyss;
+  YYSTYPE yyvs;
+    YYLTYPE yyls;
+};
+
+/* The size of the maximum gap between one aligned stack and the next.  */
+# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
+
+/* The size of an array large to enough to hold all stacks, each with
+   N elements.  */
+# define YYSTACK_BYTES(N) \
+     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+      + 2 * YYSTACK_GAP_MAXIMUM)
+
+/* Copy COUNT objects from FROM to TO.  The source and destination do
+   not overlap.  */
+# ifndef YYCOPY
+#  if defined __GNUC__ && 1 < __GNUC__
+#   define YYCOPY(To, From, Count) \
+      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
+#  else
+#   define YYCOPY(To, From, Count)		\
+      do					\
+	{					\
+	  YYSIZE_T yyi;				\
+	  for (yyi = 0; yyi < (Count); yyi++)	\
+	    (To)[yyi] = (From)[yyi];		\
+	}					\
+      while (YYID (0))
+#  endif
+# endif
+
+/* Relocate STACK from its old location to the new one.  The
+   local variables YYSIZE and YYSTACKSIZE give the old and new number of
+   elements in the stack, and YYPTR gives the new location of the
+   stack.  Advance YYPTR to a properly aligned location for the next
+   stack.  */
+# define YYSTACK_RELOCATE(Stack)					\
+    do									\
+      {									\
+	YYSIZE_T yynewbytes;						\
+	YYCOPY (&yyptr->Stack, Stack, yysize);				\
+	Stack = &yyptr->Stack;						\
+	yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
+	yyptr += yynewbytes / sizeof (*yyptr);				\
+      }									\
+    while (YYID (0))
+
 #endif
-static int TclDatemaxdepth = YYMAXDEPTH;
-# define YYERRCODE 256
 
+/* YYFINAL -- State number of the termination state.  */
+#define YYFINAL  2
+/* YYLAST -- Last index in YYTABLE.  */
+#define YYLAST   79
+
+/* YYNTOKENS -- Number of terminals.  */
+#define YYNTOKENS  26
+/* YYNNTS -- Number of nonterminals.  */
+#define YYNNTS  16
+/* YYNRULES -- Number of rules.  */
+#define YYNRULES  56
+/* YYNRULES -- Number of states.  */
+#define YYNSTATES  83
+
+/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
+#define YYUNDEFTOK  2
+#define YYMAXUTOK   274
+
+#define YYTRANSLATE(YYX)						\
+  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+
+/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
+static const yytype_uint8 yytranslate[] =
+{
+       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,    25,    22,    21,    24,    23,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,    20,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
+       5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
+      15,    16,    17,    18,    19
+};
 
-/*
- * Month and day table.
- */
-static CONST TABLE MonthDayTable[] = {
-    { "january",        tMONTH,  1 },
-    { "february",       tMONTH,  2 },
-    { "march",          tMONTH,  3 },
-    { "april",          tMONTH,  4 },
-    { "may",            tMONTH,  5 },
-    { "june",           tMONTH,  6 },
-    { "july",           tMONTH,  7 },
-    { "august",         tMONTH,  8 },
-    { "september",      tMONTH,  9 },
-    { "sept",           tMONTH,  9 },
-    { "october",        tMONTH, 10 },
-    { "november",       tMONTH, 11 },
-    { "december",       tMONTH, 12 },
-    { "sunday",         tDAY, 0 },
-    { "monday",         tDAY, 1 },
-    { "tuesday",        tDAY, 2 },
-    { "tues",           tDAY, 2 },
-    { "wednesday",      tDAY, 3 },
-    { "wednes",         tDAY, 3 },
-    { "thursday",       tDAY, 4 },
-    { "thur",           tDAY, 4 },
-    { "thurs",          tDAY, 4 },
-    { "friday",         tDAY, 5 },
-    { "saturday",       tDAY, 6 },
-    { NULL }
+#if YYDEBUG
+/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
+   YYRHS.  */
+static const yytype_uint8 yyprhs[] =
+{
+       0,     0,     3,     4,     7,     9,    11,    13,    15,    17,
+      19,    21,    23,    25,    28,    33,    39,    46,    54,    57,
+      59,    61,    63,    66,    69,    73,    76,    80,    86,    88,
+      94,   100,   103,   108,   111,   113,   117,   120,   124,   128,
+     136,   139,   144,   147,   149,   153,   156,   159,   163,   165,
+     167,   169,   171,   173,   175,   177,   178
 };
 
-/*
- * Time units table.
- */
-static CONST TABLE UnitsTable[] = {
-    { "year",           tMONTH_UNIT,    12 },
-    { "month",          tMONTH_UNIT,     1 },
-    { "fortnight",      tDAY_UNIT,      14 },
-    { "week",           tDAY_UNIT,       7 },
-    { "day",            tDAY_UNIT,       1 },
-    { "hour",           tSEC_UNIT, 60 * 60 },
-    { "minute",         tSEC_UNIT,      60 },
-    { "min",            tSEC_UNIT,      60 },
-    { "second",         tSEC_UNIT,       1 },
-    { "sec",            tSEC_UNIT,       1 },
-    { NULL }
+/* YYRHS -- A `-1'-separated list of the rules' RHS.  */
+static const yytype_int8 yyrhs[] =
+{
+      27,     0,    -1,    -1,    27,    28,    -1,    29,    -1,    30,
+      -1,    32,    -1,    33,    -1,    31,    -1,    36,    -1,    34,
+      -1,    35,    -1,    40,    -1,    13,     7,    -1,    13,    20,
+      13,    41,    -1,    13,    20,    13,    21,    13,    -1,    13,
+      20,    13,    20,    13,    41,    -1,    13,    20,    13,    20,
+      13,    21,    13,    -1,    14,    16,    -1,    14,    -1,     5,
+      -1,     4,    -1,     4,    22,    -1,    13,     4,    -1,    38,
+      13,     4,    -1,    19,     4,    -1,    13,    23,    13,    -1,
+      13,    23,    13,    23,    13,    -1,    17,    -1,    13,    21,
+       8,    21,    13,    -1,    13,    21,    13,    21,    13,    -1,
+       8,    13,    -1,     8,    13,    22,    13,    -1,    13,     8,
+      -1,    15,    -1,    13,     8,    13,    -1,    19,     8,    -1,
+      19,    13,     8,    -1,    17,    14,    17,    -1,    17,    14,
+      13,    20,    13,    20,    13,    -1,    17,    17,    -1,    10,
+      13,    24,    13,    -1,    37,     3,    -1,    37,    -1,    38,
+      13,    39,    -1,    13,    39,    -1,    19,    39,    -1,    19,
+      13,    39,    -1,    39,    -1,    21,    -1,    25,    -1,    11,
+      -1,    18,    -1,     9,    -1,    13,    -1,    -1,     7,    -1
 };
 
-/*
- * Assorted relative-time words.
- */
-static CONST TABLE OtherTable[] = {
-    { "tomorrow",       tDAY_UNIT,      1 },
-    { "yesterday",      tDAY_UNIT,     -1 },
-    { "today",          tDAY_UNIT,      0 },
-    { "now",            tSEC_UNIT,      0 },
-    { "last",           tUNUMBER,      -1 },
-    { "this",           tSEC_UNIT,      0 },
-    { "next",           tNEXT,          1 },
-#if 0
-    { "first",          tUNUMBER,       1 },
-    { "second",         tUNUMBER,       2 },
-    { "third",          tUNUMBER,       3 },
-    { "fourth",         tUNUMBER,       4 },
-    { "fifth",          tUNUMBER,       5 },
-    { "sixth",          tUNUMBER,       6 },
-    { "seventh",        tUNUMBER,       7 },
-    { "eighth",         tUNUMBER,       8 },
-    { "ninth",          tUNUMBER,       9 },
-    { "tenth",          tUNUMBER,       10 },
-    { "eleventh",       tUNUMBER,       11 },
-    { "twelfth",        tUNUMBER,       12 },
-#endif
-    { "ago",            tAGO,   1 },
-    { "epoch",          tEPOCH,   0 },
-    { "stardate",       tSTARDATE, 0},
-    { NULL }
+/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
+static const yytype_uint16 yyrline[] =
+{
+       0,   225,   225,   226,   229,   232,   235,   238,   241,   244,
+     247,   251,   256,   259,   265,   271,   279,   285,   296,   300,
+     304,   310,   314,   318,   322,   326,   332,   336,   341,   346,
+     351,   356,   360,   365,   369,   374,   381,   385,   391,   400,
+     409,   419,   433,   438,   441,   444,   447,   450,   453,   458,
+     461,   466,   470,   474,   480,   498,   501
 };
+#endif
 
-/*
- * The timezone table.  (Note: This table was modified to not use any floating
- * point constants to work around an SGI compiler bug).
- */
-static CONST TABLE TimezoneTable[] = {
-    { "gmt",    tZONE,     HOUR( 0) },      /* Greenwich Mean */
-    { "ut",     tZONE,     HOUR( 0) },      /* Universal (Coordinated) */
-    { "utc",    tZONE,     HOUR( 0) },
-    { "uct",    tZONE,     HOUR( 0) },      /* Universal Coordinated Time */
-    { "wet",    tZONE,     HOUR( 0) },      /* Western European */
-    { "bst",    tDAYZONE,  HOUR( 0) },      /* British Summer */
-    { "wat",    tZONE,     HOUR( 1) },      /* West Africa */
-    { "at",     tZONE,     HOUR( 2) },      /* Azores */
-#if     0
-    /* For completeness.  BST is also British Summer, and GST is
-     * also Guam Standard. */
-    { "bst",    tZONE,     HOUR( 3) },      /* Brazil Standard */
-    { "gst",    tZONE,     HOUR( 3) },      /* Greenland Standard */
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+   First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
+static const char *const yytname[] =
+{
+  "$end", "error", "$undefined", "tAGO", "tDAY", "tDAYZONE", "tID",
+  "tMERIDIAN", "tMONTH", "tMONTH_UNIT", "tSTARDATE", "tSEC_UNIT",
+  "tSNUMBER", "tUNUMBER", "tZONE", "tEPOCH", "tDST", "tISOBASE",
+  "tDAY_UNIT", "tNEXT", "':'", "'-'", "','", "'/'", "'.'", "'+'",
+  "$accept", "spec", "item", "time", "zone", "day", "date", "ordMonth",
+  "iso", "trek", "relspec", "relunits", "sign", "unit", "number",
+  "o_merid", 0
+};
 #endif
-    { "nft",    tZONE,     HOUR( 7/2) },    /* Newfoundland */
-    { "nst",    tZONE,     HOUR( 7/2) },    /* Newfoundland Standard */
-    { "ndt",    tDAYZONE,  HOUR( 7/2) },    /* Newfoundland Daylight */
-    { "ast",    tZONE,     HOUR( 4) },      /* Atlantic Standard */
-    { "adt",    tDAYZONE,  HOUR( 4) },      /* Atlantic Daylight */
-    { "est",    tZONE,     HOUR( 5) },      /* Eastern Standard */
-    { "edt",    tDAYZONE,  HOUR( 5) },      /* Eastern Daylight */
-    { "cst",    tZONE,     HOUR( 6) },      /* Central Standard */
-    { "cdt",    tDAYZONE,  HOUR( 6) },      /* Central Daylight */
-    { "mst",    tZONE,     HOUR( 7) },      /* Mountain Standard */
-    { "mdt",    tDAYZONE,  HOUR( 7) },      /* Mountain Daylight */
-    { "pst",    tZONE,     HOUR( 8) },      /* Pacific Standard */
-    { "pdt",    tDAYZONE,  HOUR( 8) },      /* Pacific Daylight */
-    { "yst",    tZONE,     HOUR( 9) },      /* Yukon Standard */
-    { "ydt",    tDAYZONE,  HOUR( 9) },      /* Yukon Daylight */
-    { "hst",    tZONE,     HOUR(10) },      /* Hawaii Standard */
-    { "hdt",    tDAYZONE,  HOUR(10) },      /* Hawaii Daylight */
-    { "cat",    tZONE,     HOUR(10) },      /* Central Alaska */
-    { "ahst",   tZONE,     HOUR(10) },      /* Alaska-Hawaii Standard */
-    { "nt",     tZONE,     HOUR(11) },      /* Nome */
-    { "idlw",   tZONE,     HOUR(12) },      /* International Date Line West */
-    { "cet",    tZONE,    -HOUR( 1) },      /* Central European */
-    { "cest",   tDAYZONE, -HOUR( 1) },      /* Central European Summer */
-    { "met",    tZONE,    -HOUR( 1) },      /* Middle European */
-    { "mewt",   tZONE,    -HOUR( 1) },      /* Middle European Winter */
-    { "mest",   tDAYZONE, -HOUR( 1) },      /* Middle European Summer */
-    { "swt",    tZONE,    -HOUR( 1) },      /* Swedish Winter */
-    { "sst",    tDAYZONE, -HOUR( 1) },      /* Swedish Summer */
-    { "fwt",    tZONE,    -HOUR( 1) },      /* French Winter */
-    { "fst",    tDAYZONE, -HOUR( 1) },      /* French Summer */
-    { "eet",    tZONE,    -HOUR( 2) },      /* Eastern Europe, USSR Zone 1 */
-    { "bt",     tZONE,    -HOUR( 3) },      /* Baghdad, USSR Zone 2 */
-    { "it",     tZONE,    -HOUR( 7/2) },    /* Iran */
-    { "zp4",    tZONE,    -HOUR( 4) },      /* USSR Zone 3 */
-    { "zp5",    tZONE,    -HOUR( 5) },      /* USSR Zone 4 */
-    { "ist",    tZONE,    -HOUR(11/2) },    /* Indian Standard */
-    { "zp6",    tZONE,    -HOUR( 6) },      /* USSR Zone 5 */
-#if     0
-    /* For completeness.  NST is also Newfoundland Stanard, nad SST is
-     * also Swedish Summer. */
-    { "nst",    tZONE,    -HOUR(13/2) },    /* North Sumatra */
-    { "sst",    tZONE,    -HOUR( 7) },      /* South Sumatra, USSR Zone 6 */
-#endif  /* 0 */
-    { "wast",   tZONE,    -HOUR( 7) },      /* West Australian Standard */
-    { "wadt",   tDAYZONE, -HOUR( 7) },      /* West Australian Daylight */
-    { "jt",     tZONE,    -HOUR(15/2) },    /* Java (3pm in Cronusland!) */
-    { "cct",    tZONE,    -HOUR( 8) },      /* China Coast, USSR Zone 7 */
-    { "jst",    tZONE,    -HOUR( 9) },      /* Japan Standard, USSR Zone 8 */
-    { "jdt",    tDAYZONE, -HOUR( 9) },      /* Japan Daylight */
-    { "kst",    tZONE,    -HOUR( 9) },      /* Korea Standard */
-    { "kdt",    tDAYZONE, -HOUR( 9) },      /* Korea Daylight */
-    { "cast",   tZONE,    -HOUR(19/2) },    /* Central Australian Standard */
-    { "cadt",   tDAYZONE, -HOUR(19/2) },    /* Central Australian Daylight */
-    { "east",   tZONE,    -HOUR(10) },      /* Eastern Australian Standard */
-    { "eadt",   tDAYZONE, -HOUR(10) },      /* Eastern Australian Daylight */
-    { "gst",    tZONE,    -HOUR(10) },      /* Guam Standard, USSR Zone 9 */
-    { "nzt",    tZONE,    -HOUR(12) },      /* New Zealand */
-    { "nzst",   tZONE,    -HOUR(12) },      /* New Zealand Standard */
-    { "nzdt",   tDAYZONE, -HOUR(12) },      /* New Zealand Daylight */
-    { "idle",   tZONE,    -HOUR(12) },      /* International Date Line East */
-    /* ADDED BY Marco Nijdam */
-    { "dst",    tDST,     HOUR( 0) },       /* DST on (hour is ignored) */
-    /* End ADDED */
-    {  NULL  }
+
+# ifdef YYPRINT
+/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
+   token YYLEX-NUM.  */
+static const yytype_uint16 yytoknum[] =
+{
+       0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
+     265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
+      58,    45,    44,    47,    46,    43
 };
+# endif
 
-/*
- * Military timezone table.
- */
-static CONST TABLE MilitaryTable[] = {
-    { "a",      tZONE,  HOUR(  1) },
-    { "b",      tZONE,  HOUR(  2) },
-    { "c",      tZONE,  HOUR(  3) },
-    { "d",      tZONE,  HOUR(  4) },
-    { "e",      tZONE,  HOUR(  5) },
-    { "f",      tZONE,  HOUR(  6) },
-    { "g",      tZONE,  HOUR(  7) },
-    { "h",      tZONE,  HOUR(  8) },
-    { "i",      tZONE,  HOUR(  9) },
-    { "k",      tZONE,  HOUR( 10) },
-    { "l",      tZONE,  HOUR( 11) },
-    { "m",      tZONE,  HOUR( 12) },
-    { "n",      tZONE,  HOUR(- 1) },
-    { "o",      tZONE,  HOUR(- 2) },
-    { "p",      tZONE,  HOUR(- 3) },
-    { "q",      tZONE,  HOUR(- 4) },
-    { "r",      tZONE,  HOUR(- 5) },
-    { "s",      tZONE,  HOUR(- 6) },
-    { "t",      tZONE,  HOUR(- 7) },
-    { "u",      tZONE,  HOUR(- 8) },
-    { "v",      tZONE,  HOUR(- 9) },
-    { "w",      tZONE,  HOUR(-10) },
-    { "x",      tZONE,  HOUR(-11) },
-    { "y",      tZONE,  HOUR(-12) },
-    { "z",      tZONE,  HOUR(  0) },
-    { NULL }
+/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
+static const yytype_uint8 yyr1[] =
+{
+       0,    26,    27,    27,    28,    28,    28,    28,    28,    28,
+      28,    28,    28,    29,    29,    29,    29,    29,    30,    30,
+      30,    31,    31,    31,    31,    31,    32,    32,    32,    32,
+      32,    32,    32,    32,    32,    32,    33,    33,    34,    34,
+      34,    35,    36,    36,    37,    37,    37,    37,    37,    38,
+      38,    39,    39,    39,    40,    41,    41
 };
 
+/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
+static const yytype_uint8 yyr2[] =
+{
+       0,     2,     0,     2,     1,     1,     1,     1,     1,     1,
+       1,     1,     1,     2,     4,     5,     6,     7,     2,     1,
+       1,     1,     2,     2,     3,     2,     3,     5,     1,     5,
+       5,     2,     4,     2,     1,     3,     2,     3,     3,     7,
+       2,     4,     2,     1,     3,     2,     2,     3,     1,     1,
+       1,     1,     1,     1,     1,     0,     1
+};
 
-/*
- * Dump error messages in the bit bucket.
- */
+/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
+   STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
+   means the default is an error.  */
+static const yytype_uint8 yydefact[] =
+{
+       2,     0,     1,    21,    20,     0,    53,     0,    51,    54,
+      19,    34,    28,    52,     0,    49,    50,     3,     4,     5,
+       8,     6,     7,    10,    11,     9,    43,     0,    48,    12,
+      22,    31,     0,    23,    13,    33,     0,     0,     0,    45,
+      18,     0,    40,    25,    36,     0,    46,    42,     0,     0,
+       0,    35,    55,     0,     0,    26,     0,    38,    37,    47,
+      24,    44,    32,    41,    56,     0,     0,    14,     0,     0,
+       0,     0,    55,    15,    29,    30,    27,     0,     0,    16,
+       0,    17,    39
+};
+
+/* YYDEFGOTO[NTERM-NUM].  */
+static const yytype_int8 yydefgoto[] =
+{
+      -1,     1,    17,    18,    19,    20,    21,    22,    23,    24,
+      25,    26,    27,    28,    29,    67
+};
+
+/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+   STATE-NUM.  */
+#define YYPACT_NINF -22
+static const yytype_int8 yypact[] =
+{
+     -22,     2,   -22,   -21,   -22,    -4,   -22,     1,   -22,    22,
+      18,   -22,     8,   -22,    40,   -22,   -22,   -22,   -22,   -22,
+     -22,   -22,   -22,   -22,   -22,   -22,    32,    28,   -22,   -22,
+     -22,    24,    26,   -22,   -22,    42,    47,    -5,    49,   -22,
+     -22,    15,   -22,   -22,   -22,    48,   -22,   -22,    43,    50,
+      51,   -22,    17,    44,    46,    45,    52,   -22,   -22,   -22,
+     -22,   -22,   -22,   -22,   -22,    56,    57,   -22,    58,    60,
+      61,    62,    -3,   -22,   -22,   -22,   -22,    59,    63,   -22,
+      64,   -22,   -22
+};
+
+/* YYPGOTO[NTERM-NUM].  */
+static const yytype_int8 yypgoto[] =
+{
+     -22,   -22,   -22,   -22,   -22,   -22,   -22,   -22,   -22,   -22,
+     -22,   -22,   -22,    -9,   -22,     6
+};
+
+/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
+   positive, shift that token.  If negative, reduce the rule which
+   number is the opposite.  If zero, do what YYDEFACT says.
+   If YYTABLE_NINF, syntax error.  */
+#define YYTABLE_NINF -1
+static const yytype_uint8 yytable[] =
+{
+      39,    30,     2,    53,    64,    46,     3,     4,    54,    31,
+       5,     6,     7,     8,    32,     9,    10,    11,    78,    12,
+      13,    14,    41,    15,    64,    42,    33,    16,    56,    34,
+      35,     6,    57,     8,    40,    47,    59,    65,    66,    61,
+      13,    48,    36,    37,    43,    38,    49,    60,    44,     6,
+      50,     8,     6,    45,     8,    51,    58,     6,    13,     8,
+      52,    13,    55,    62,    63,    68,    13,    69,    70,    72,
+      73,    74,    71,    75,    76,    77,    81,    82,    79,    80
+};
+
+static const yytype_uint8 yycheck[] =
+{
+       9,    22,     0,     8,     7,    14,     4,     5,    13,    13,
+       8,     9,    10,    11,    13,    13,    14,    15,    21,    17,
+      18,    19,    14,    21,     7,    17,     4,    25,    13,     7,
+       8,     9,    17,    11,    16,     3,    45,    20,    21,    48,
+      18,    13,    20,    21,     4,    23,    22,     4,     8,     9,
+      24,    11,     9,    13,    11,    13,     8,     9,    18,    11,
+      13,    18,    13,    13,    13,    21,    18,    21,    23,    13,
+      13,    13,    20,    13,    13,    13,    13,    13,    72,    20
+};
+
+/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
+   symbol of state STATE-NUM.  */
+static const yytype_uint8 yystos[] =
+{
+       0,    27,     0,     4,     5,     8,     9,    10,    11,    13,
+      14,    15,    17,    18,    19,    21,    25,    28,    29,    30,
+      31,    32,    33,    34,    35,    36,    37,    38,    39,    40,
+      22,    13,    13,     4,     7,     8,    20,    21,    23,    39,
+      16,    14,    17,     4,     8,    13,    39,     3,    13,    22,
+      24,    13,    13,     8,    13,    13,    13,    17,     8,    39,
+       4,    39,    13,    13,     7,    20,    21,    41,    21,    21,
+      23,    20,    13,    13,    13,    13,    13,    13,    21,    41,
+      20,    13,    13
+};
+
+#define yyerrok		(yyerrstatus = 0)
+#define yyclearin	(yychar = YYEMPTY)
+#define YYEMPTY		(-2)
+#define YYEOF		0
+
+#define YYACCEPT	goto yyacceptlab
+#define YYABORT		goto yyabortlab
+#define YYERROR		goto yyerrorlab
+
+
+/* Like YYERROR except do call yyerror.  This remains here temporarily
+   to ease the transition to the new meaning of YYERROR, for GCC.
+   Once GCC version 2 has supplanted version 1, this can go.  */
+
+#define YYFAIL		goto yyerrlab
+
+#define YYRECOVERING()  (!!yyerrstatus)
+
+#define YYBACKUP(Token, Value)					\
+do								\
+  if (yychar == YYEMPTY && yylen == 1)				\
+    {								\
+      yychar = (Token);						\
+      yylval = (Value);						\
+      yytoken = YYTRANSLATE (yychar);				\
+      YYPOPSTACK (1);						\
+      goto yybackup;						\
+    }								\
+  else								\
+    {								\
+      yyerror (&yylloc, info, YY_("syntax error: cannot back up")); \
+      YYERROR;							\
+    }								\
+while (YYID (0))
+
+
+#define YYTERROR	1
+#define YYERRCODE	256
+
+
+/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+   If N is 0, then set CURRENT to the empty location which ends
+   the previous symbol: RHS[0] (always defined).  */
+
+#define YYRHSLOC(Rhs, K) ((Rhs)[K])
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N)				\
+    do									\
+      if (YYID (N))                                                    \
+	{								\
+	  (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;	\
+	  (Current).first_column = YYRHSLOC (Rhs, 1).first_column;	\
+	  (Current).last_line    = YYRHSLOC (Rhs, N).last_line;		\
+	  (Current).last_column  = YYRHSLOC (Rhs, N).last_column;	\
+	}								\
+      else								\
+	{								\
+	  (Current).first_line   = (Current).last_line   =		\
+	    YYRHSLOC (Rhs, 0).last_line;				\
+	  (Current).first_column = (Current).last_column =		\
+	    YYRHSLOC (Rhs, 0).last_column;				\
+	}								\
+    while (YYID (0))
+#endif
+
+
+/* YY_LOCATION_PRINT -- Print the location on the stream.
+   This macro was not mandated originally: define only if we know
+   we won't break user code: when these are the locations we know.  */
+
+#ifndef YY_LOCATION_PRINT
+# if YYLTYPE_IS_TRIVIAL
+#  define YY_LOCATION_PRINT(File, Loc)			\
+     fprintf (File, "%d.%d-%d.%d",			\
+	      (Loc).first_line, (Loc).first_column,	\
+	      (Loc).last_line,  (Loc).last_column)
+# else
+#  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+# endif
+#endif
+
+
+/* YYLEX -- calling `yylex' with the right arguments.  */
+
+#ifdef YYLEX_PARAM
+# define YYLEX yylex (&yylval, &yylloc, YYLEX_PARAM)
+#else
+# define YYLEX yylex (&yylval, &yylloc, info)
+#endif
+
+/* Enable debugging if requested.  */
+#if YYDEBUG
+
+# ifndef YYFPRINTF
+#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYFPRINTF fprintf
+# endif
+
+# define YYDPRINTF(Args)			\
+do {						\
+  if (yydebug)					\
+    YYFPRINTF Args;				\
+} while (YYID (0))
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)			  \
+do {									  \
+  if (yydebug)								  \
+    {									  \
+      YYFPRINTF (stderr, "%s ", Title);					  \
+      yy_symbol_print (stderr,						  \
+		  Type, Value, Location, info); \
+      YYFPRINTF (stderr, "\n");						  \
+    }									  \
+} while (YYID (0))
+
+
+/*--------------------------------.
+| Print this symbol on YYOUTPUT.  |
+`--------------------------------*/
+
+/*ARGSUSED*/
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static void
+yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp, DateInfo* info)
+#else
 static void
-TclDateerror(s)
-    char  *s;
+yy_symbol_value_print (yyoutput, yytype, yyvaluep, yylocationp, info)
+    FILE *yyoutput;
+    int yytype;
+    YYSTYPE const * const yyvaluep;
+    YYLTYPE const * const yylocationp;
+    DateInfo* info;
+#endif
 {
+  if (!yyvaluep)
+    return;
+  YYUSE (yylocationp);
+  YYUSE (info);
+# ifdef YYPRINT
+  if (yytype < YYNTOKENS)
+    YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
+# else
+  YYUSE (yyoutput);
+# endif
+  switch (yytype)
+    {
+      default:
+	break;
+    }
 }
 
 
-static time_t
-ToSeconds(Hours, Minutes, Seconds, Meridian)
-    time_t      Hours;
-    time_t      Minutes;
-    time_t      Seconds;
-    MERIDIAN    Meridian;
+/*--------------------------------.
+| Print this symbol on YYOUTPUT.  |
+`--------------------------------*/
+
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static void
+yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep, YYLTYPE const * const yylocationp, DateInfo* info)
+#else
+static void
+yy_symbol_print (yyoutput, yytype, yyvaluep, yylocationp, info)
+    FILE *yyoutput;
+    int yytype;
+    YYSTYPE const * const yyvaluep;
+    YYLTYPE const * const yylocationp;
+    DateInfo* info;
+#endif
 {
-    if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59)
-        return -1;
-    switch (Meridian) {
-    case MER24:
-        if (Hours < 0 || Hours > 23)
-            return -1;
-        return (Hours * 60L + Minutes) * 60L + Seconds;
-    case MERam:
-        if (Hours < 1 || Hours > 12)
-            return -1;
-        return ((Hours % 12) * 60L + Minutes) * 60L + Seconds;
-    case MERpm:
-        if (Hours < 1 || Hours > 12)
-            return -1;
-        return (((Hours % 12) + 12) * 60L + Minutes) * 60L + Seconds;
-    }
-    return -1;  /* Should never be reached */
+  if (yytype < YYNTOKENS)
+    YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
+  else
+    YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
+
+  YY_LOCATION_PRINT (yyoutput, *yylocationp);
+  YYFPRINTF (yyoutput, ": ");
+  yy_symbol_value_print (yyoutput, yytype, yyvaluep, yylocationp, info);
+  YYFPRINTF (yyoutput, ")");
 }
 
-/*
- *-----------------------------------------------------------------------------
- *
- * Convert --
- *
- *      Convert a {month, day, year, hours, minutes, seconds, meridian, dst}
- *      tuple into a clock seconds value.
- *
- * Results:
- *      0 or -1 indicating success or failure.
- *
- * Side effects:
- *      Fills TimePtr with the computed value.
- *
- *-----------------------------------------------------------------------------
- */
-static int
-Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode, TimePtr)
-    time_t      Month;
-    time_t      Day;
-    time_t      Year;
-    time_t      Hours;
-    time_t      Minutes;
-    time_t      Seconds;
-    MERIDIAN    Meridian;
-    DSTMODE     DSTmode;
-    time_t     *TimePtr;
+/*------------------------------------------------------------------.
+| yy_stack_print -- Print the state stack from its BOTTOM up to its |
+| TOP (included).                                                   |
+`------------------------------------------------------------------*/
+
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static void
+yy_stack_print (yytype_int16 *bottom, yytype_int16 *top)
+#else
+static void
+yy_stack_print (bottom, top)
+    yytype_int16 *bottom;
+    yytype_int16 *top;
+#endif
 {
-    static int  DaysInMonth[12] = {
-        31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-    };
-    time_t tod;
-    time_t Julian;
-    int i;
+  YYFPRINTF (stderr, "Stack now");
+  for (; bottom <= top; ++bottom)
+    YYFPRINTF (stderr, " %d", *bottom);
+  YYFPRINTF (stderr, "\n");
+}
 
-    /* Figure out how many days are in February for the given year.
-     * Every year divisible by 4 is a leap year.
-     * But, every year divisible by 100 is not a leap year.
-     * But, every year divisible by 400 is a leap year after all.
-     */
-    DaysInMonth[1] = IsLeapYear(Year) ? 29 : 28;
+# define YY_STACK_PRINT(Bottom, Top)				\
+do {								\
+  if (yydebug)							\
+    yy_stack_print ((Bottom), (Top));				\
+} while (YYID (0))
 
-    /* Check the inputs for validity */
-    if (Month < 1 || Month > 12
-	    || Year < START_OF_TIME || Year > END_OF_TIME
-	    || Day < 1 || Day > DaysInMonth[(int)--Month])
-        return -1;
 
-    /* Start computing the value.  First determine the number of days
-     * represented by the date, then multiply by the number of seconds/day.
-     */
-    for (Julian = Day - 1, i = 0; i < Month; i++)
-        Julian += DaysInMonth[i];
-    if (Year >= EPOCH) {
-        for (i = EPOCH; i < Year; i++)
-            Julian += 365 + IsLeapYear(i);
-    } else {
-        for (i = (int)Year; i < EPOCH; i++)
-            Julian -= 365 + IsLeapYear(i);
+/*------------------------------------------------.
+| Report that the YYRULE is going to be reduced.  |
+`------------------------------------------------*/
+
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static void
+yy_reduce_print (YYSTYPE *yyvsp, YYLTYPE *yylsp, int yyrule, DateInfo* info)
+#else
+static void
+yy_reduce_print (yyvsp, yylsp, yyrule, info)
+    YYSTYPE *yyvsp;
+    YYLTYPE *yylsp;
+    int yyrule;
+    DateInfo* info;
+#endif
+{
+  int yynrhs = yyr2[yyrule];
+  int yyi;
+  unsigned long int yylno = yyrline[yyrule];
+  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
+	     yyrule - 1, yylno);
+  /* The symbols being reduced.  */
+  for (yyi = 0; yyi < yynrhs; yyi++)
+    {
+      fprintf (stderr, "   $%d = ", yyi + 1);
+      yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
+		       &(yyvsp[(yyi + 1) - (yynrhs)])
+		       , &(yylsp[(yyi + 1) - (yynrhs)])		       , info);
+      fprintf (stderr, "\n");
     }
-    Julian *= SECSPERDAY;
+}
 
-    /* Add the timezone offset ?? */
-    Julian += TclDateTimezone * 60L;
+# define YY_REDUCE_PRINT(Rule)		\
+do {					\
+  if (yydebug)				\
+    yy_reduce_print (yyvsp, yylsp, Rule, info); \
+} while (YYID (0))
+
+/* Nonzero means print parse trace.  It is left uninitialized so that
+   multiple parsers can coexist.  */
+int yydebug;
+#else /* !YYDEBUG */
+# define YYDPRINTF(Args)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+# define YY_STACK_PRINT(Bottom, Top)
+# define YY_REDUCE_PRINT(Rule)
+#endif /* !YYDEBUG */
+
+
+/* YYINITDEPTH -- initial size of the parser's stacks.  */
+#ifndef	YYINITDEPTH
+# define YYINITDEPTH 200
+#endif
 
-    /* Add the number of seconds represented by the time component */
-    if ((tod = ToSeconds(Hours, Minutes, Seconds, Meridian)) < 0)
-        return -1;
-    Julian += tod;
+/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
+   if the built-in stack extension method is used).
 
-    /* Perform a preliminary DST compensation ?? */
-    if (DSTmode == DSTon
-     || (DSTmode == DSTmaybe && TclpGetDate((TclpTime_t)&Julian, 0)->tm_isdst))
-        Julian -= 60 * 60;
-    *TimePtr = Julian;
-    return 0;
-}
+   Do not make this value too large; the results are undefined if
+   YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
+   evaluated with infinite-precision integer arithmetic.  */
 
+#ifndef YYMAXDEPTH
+# define YYMAXDEPTH 10000
+#endif
 
-static time_t
-DSTcorrect(Start, Future)
-    time_t      Start;
-    time_t      Future;
+
+
+#if YYERROR_VERBOSE
+
+# ifndef yystrlen
+#  if defined __GLIBC__ && defined _STRING_H
+#   define yystrlen strlen
+#  else
+/* Return the length of YYSTR.  */
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static YYSIZE_T
+yystrlen (const char *yystr)
+#else
+static YYSIZE_T
+yystrlen (yystr)
+    const char *yystr;
+#endif
 {
-    time_t      StartDay;
-    time_t      FutureDay;
-    StartDay = (TclpGetDate((TclpTime_t)&Start, 0)->tm_hour + 1) % 24;
-    FutureDay = (TclpGetDate((TclpTime_t)&Future, 0)->tm_hour + 1) % 24;
-    return (Future - Start) + (StartDay - FutureDay) * 60L * 60L;
+  YYSIZE_T yylen;
+  for (yylen = 0; yystr[yylen]; yylen++)
+    continue;
+  return yylen;
 }
+#  endif
+# endif
+
+# ifndef yystpcpy
+#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
+#   define yystpcpy stpcpy
+#  else
+/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
+   YYDEST.  */
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static char *
+yystpcpy (char *yydest, const char *yysrc)
+#else
+static char *
+yystpcpy (yydest, yysrc)
+    char *yydest;
+    const char *yysrc;
+#endif
+{
+  char *yyd = yydest;
+  const char *yys = yysrc;
 
+  while ((*yyd++ = *yys++) != '\0')
+    continue;
 
-static time_t
-NamedDay(Start, DayOrdinal, DayNumber)
-    time_t      Start;
-    time_t      DayOrdinal;
-    time_t      DayNumber;
-{
-    struct tm   *tm;
-    time_t      now;
-
-    now = Start;
-    tm = TclpGetDate((TclpTime_t)&now, 0);
-    now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7);
-    now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1);
-    return DSTcorrect(Start, now);
+  return yyd - 1;
 }
+#  endif
+# endif
+
+# ifndef yytnamerr
+/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
+   quotes and backslashes, so that it's suitable for yyerror.  The
+   heuristic is that double-quoting is unnecessary unless the string
+   contains an apostrophe, a comma, or backslash (other than
+   backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
+   null, do not copy; instead, return the length of what the result
+   would have been.  */
+static YYSIZE_T
+yytnamerr (char *yyres, const char *yystr)
+{
+  if (*yystr == '"')
+    {
+      YYSIZE_T yyn = 0;
+      char const *yyp = yystr;
+
+      for (;;)
+	switch (*++yyp)
+	  {
+	  case '\'':
+	  case ',':
+	    goto do_not_strip_quotes;
+
+	  case '\\':
+	    if (*++yyp != '\\')
+	      goto do_not_strip_quotes;
+	    /* Fall through.  */
+	  default:
+	    if (yyres)
+	      yyres[yyn] = *yyp;
+	    yyn++;
+	    break;
+
+	  case '"':
+	    if (yyres)
+	      yyres[yyn] = '\0';
+	    return yyn;
+	  }
+    do_not_strip_quotes: ;
+    }
 
-static time_t
-NamedMonth(Start, MonthOrdinal, MonthNumber)
-    time_t Start;
-    time_t MonthOrdinal;
-    time_t MonthNumber;
+  if (! yyres)
+    return yystrlen (yystr);
+
+  return yystpcpy (yyres, yystr) - yyres;
+}
+# endif
+
+/* Copy into YYRESULT an error message about the unexpected token
+   YYCHAR while in state YYSTATE.  Return the number of bytes copied,
+   including the terminating null byte.  If YYRESULT is null, do not
+   copy anything; just return the number of bytes that would be
+   copied.  As a special case, return 0 if an ordinary "syntax error"
+   message will do.  Return YYSIZE_MAXIMUM if overflow occurs during
+   size calculation.  */
+static YYSIZE_T
+yysyntax_error (char *yyresult, int yystate, int yychar)
 {
-    struct tm *tm;
-    time_t now;
-    int result;
-    
-    now = Start;
-    tm = TclpGetDate((TclpTime_t)&now, 0);
-    /* To compute the next n'th month, we use this alg:
-     * add n to year value
-     * if currentMonth < requestedMonth decrement year value by 1 (so that
-     *  doing next february from january gives us february of the current year)
-     * set day to 1, time to 0
-     */
-    tm->tm_year += (int)MonthOrdinal;
-    if (tm->tm_mon < MonthNumber - 1) {
-	tm->tm_year--;
+  int yyn = yypact[yystate];
+
+  if (! (YYPACT_NINF < yyn && yyn <= YYLAST))
+    return 0;
+  else
+    {
+      int yytype = YYTRANSLATE (yychar);
+      YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]);
+      YYSIZE_T yysize = yysize0;
+      YYSIZE_T yysize1;
+      int yysize_overflow = 0;
+      enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+      char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+      int yyx;
+
+# if 0
+      /* This is so xgettext sees the translatable formats that are
+	 constructed on the fly.  */
+      YY_("syntax error, unexpected %s");
+      YY_("syntax error, unexpected %s, expecting %s");
+      YY_("syntax error, unexpected %s, expecting %s or %s");
+      YY_("syntax error, unexpected %s, expecting %s or %s or %s");
+      YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s");
+# endif
+      char *yyfmt;
+      char const *yyf;
+      static char const yyunexpected[] = "syntax error, unexpected %s";
+      static char const yyexpecting[] = ", expecting %s";
+      static char const yyor[] = " or %s";
+      char yyformat[sizeof yyunexpected
+		    + sizeof yyexpecting - 1
+		    + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
+		       * (sizeof yyor - 1))];
+      char const *yyprefix = yyexpecting;
+
+      /* Start YYX at -YYN if negative to avoid negative indexes in
+	 YYCHECK.  */
+      int yyxbegin = yyn < 0 ? -yyn : 0;
+
+      /* Stay within bounds of both yycheck and yytname.  */
+      int yychecklim = YYLAST - yyn + 1;
+      int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+      int yycount = 1;
+
+      yyarg[0] = yytname[yytype];
+      yyfmt = yystpcpy (yyformat, yyunexpected);
+
+      for (yyx = yyxbegin; yyx < yyxend; ++yyx)
+	if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+	  {
+	    if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
+	      {
+		yycount = 1;
+		yysize = yysize0;
+		yyformat[sizeof yyunexpected - 1] = '\0';
+		break;
+	      }
+	    yyarg[yycount++] = yytname[yyx];
+	    yysize1 = yysize + yytnamerr (0, yytname[yyx]);
+	    yysize_overflow |= (yysize1 < yysize);
+	    yysize = yysize1;
+	    yyfmt = yystpcpy (yyfmt, yyprefix);
+	    yyprefix = yyor;
+	  }
+
+      yyf = YY_(yyformat);
+      yysize1 = yysize + yystrlen (yyf);
+      yysize_overflow |= (yysize1 < yysize);
+      yysize = yysize1;
+
+      if (yysize_overflow)
+	return YYSIZE_MAXIMUM;
+
+      if (yyresult)
+	{
+	  /* Avoid sprintf, as that infringes on the user's name space.
+	     Don't have undefined behavior even if the translation
+	     produced a string with the wrong number of "%s"s.  */
+	  char *yyp = yyresult;
+	  int yyi = 0;
+	  while ((*yyp = *yyf) != '\0')
+	    {
+	      if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
+		{
+		  yyp += yytnamerr (yyp, yyarg[yyi++]);
+		  yyf += 2;
+		}
+	      else
+		{
+		  yyp++;
+		  yyf++;
+		}
+	    }
+	}
+      return yysize;
     }
-    result = Convert(MonthNumber, (time_t) 1, tm->tm_year + TM_YEAR_BASE,
-	    (time_t) 0, (time_t) 0, (time_t) 0, MER24, DSTmaybe, &now);
-    if (result < 0) {
-	return 0;
+}
+#endif /* YYERROR_VERBOSE */
+
+
+/*-----------------------------------------------.
+| Release the memory associated to this symbol.  |
+`-----------------------------------------------*/
+
+/*ARGSUSED*/
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+static void
+yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep, YYLTYPE *yylocationp, DateInfo* info)
+#else
+static void
+yydestruct (yymsg, yytype, yyvaluep, yylocationp, info)
+    const char *yymsg;
+    int yytype;
+    YYSTYPE *yyvaluep;
+    YYLTYPE *yylocationp;
+    DateInfo* info;
+#endif
+{
+  YYUSE (yyvaluep);
+  YYUSE (yylocationp);
+  YYUSE (info);
+
+  if (!yymsg)
+    yymsg = "Deleting";
+  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+  switch (yytype)
+    {
+
+      default:
+	break;
     }
-    return DSTcorrect(Start, now);
 }
+
 
-static int
-RelativeMonth(Start, RelMonth, TimePtr)
-    time_t Start;
-    time_t RelMonth;
-    time_t *TimePtr;
+/* Prevent warnings from -Wmissing-prototypes.  */
+
+#ifdef YYPARSE_PARAM
+#if defined __STDC__ || defined __cplusplus
+int yyparse (void *YYPARSE_PARAM);
+#else
+int yyparse ();
+#endif
+#else /* ! YYPARSE_PARAM */
+#if defined __STDC__ || defined __cplusplus
+int yyparse (DateInfo* info);
+#else
+int yyparse ();
+#endif
+#endif /* ! YYPARSE_PARAM */
+
+
+
+
+
+
+/*----------.
+| yyparse.  |
+`----------*/
+
+#ifdef YYPARSE_PARAM
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+int
+yyparse (void *YYPARSE_PARAM)
+#else
+int
+yyparse (YYPARSE_PARAM)
+    void *YYPARSE_PARAM;
+#endif
+#else /* ! YYPARSE_PARAM */
+#if (defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)
+int
+yyparse (DateInfo* info)
+#else
+int
+yyparse (info)
+    DateInfo* info;
+#endif
+#endif
 {
-    struct tm *tm;
-    time_t Month;
-    time_t Year;
-    time_t Julian;
-    int result;
-
-    if (RelMonth == 0) {
-        *TimePtr = 0;
-        return 0;
+  /* The look-ahead symbol.  */
+int yychar;
+
+/* The semantic value of the look-ahead symbol.  */
+YYSTYPE yylval;
+
+/* Number of syntax errors so far.  */
+int yynerrs;
+/* Location data for the look-ahead symbol.  */
+YYLTYPE yylloc;
+
+  int yystate;
+  int yyn;
+  int yyresult;
+  /* Number of tokens to shift before error messages enabled.  */
+  int yyerrstatus;
+  /* Look-ahead token as an internal (translated) token number.  */
+  int yytoken = 0;
+#if YYERROR_VERBOSE
+  /* Buffer for error messages, and its allocated size.  */
+  char yymsgbuf[128];
+  char *yymsg = yymsgbuf;
+  YYSIZE_T yymsg_alloc = sizeof yymsgbuf;
+#endif
+
+  /* Three stacks and their tools:
+     `yyss': related to states,
+     `yyvs': related to semantic values,
+     `yyls': related to locations.
+
+     Refer to the stacks thru separate pointers, to allow yyoverflow
+     to reallocate them elsewhere.  */
+
+  /* The state stack.  */
+  yytype_int16 yyssa[YYINITDEPTH];
+  yytype_int16 *yyss = yyssa;
+  yytype_int16 *yyssp;
+
+  /* The semantic value stack.  */
+  YYSTYPE yyvsa[YYINITDEPTH];
+  YYSTYPE *yyvs = yyvsa;
+  YYSTYPE *yyvsp;
+
+  /* The location stack.  */
+  YYLTYPE yylsa[YYINITDEPTH];
+  YYLTYPE *yyls = yylsa;
+  YYLTYPE *yylsp;
+  /* The locations where the error started and ended.  */
+  YYLTYPE yyerror_range[2];
+
+#define YYPOPSTACK(N)   (yyvsp -= (N), yyssp -= (N), yylsp -= (N))
+
+  YYSIZE_T yystacksize = YYINITDEPTH;
+
+  /* The variables used to return semantic value and location from the
+     action routines.  */
+  YYSTYPE yyval;
+  YYLTYPE yyloc;
+
+  /* The number of symbols on the RHS of the reduced rule.
+     Keep to zero when no symbol should be popped.  */
+  int yylen = 0;
+
+  YYDPRINTF ((stderr, "Starting parse\n"));
+
+  yystate = 0;
+  yyerrstatus = 0;
+  yynerrs = 0;
+  yychar = YYEMPTY;		/* Cause a token to be read.  */
+
+  /* Initialize stack pointers.
+     Waste one element of value and location stack
+     so that they stay on the same level as the state stack.
+     The wasted elements are never initialized.  */
+
+  yyssp = yyss;
+  yyvsp = yyvs;
+  yylsp = yyls;
+#if YYLTYPE_IS_TRIVIAL
+  /* Initialize the default location before parsing starts.  */
+  yylloc.first_line   = yylloc.last_line   = 1;
+  yylloc.first_column = yylloc.last_column = 0;
+#endif
+
+  goto yysetstate;
+
+/*------------------------------------------------------------.
+| yynewstate -- Push a new state, which is found in yystate.  |
+`------------------------------------------------------------*/
+ yynewstate:
+  /* In all cases, when you get here, the value and location stacks
+     have just been pushed.  So pushing a state here evens the stacks.  */
+  yyssp++;
+
+ yysetstate:
+  *yyssp = yystate;
+
+  if (yyss + yystacksize - 1 <= yyssp)
+    {
+      /* Get the current used size of the three stacks, in elements.  */
+      YYSIZE_T yysize = yyssp - yyss + 1;
+
+#ifdef yyoverflow
+      {
+	/* Give user a chance to reallocate the stack.  Use copies of
+	   these so that the &'s don't force the real ones into
+	   memory.  */
+	YYSTYPE *yyvs1 = yyvs;
+	yytype_int16 *yyss1 = yyss;
+	YYLTYPE *yyls1 = yyls;
+
+	/* Each stack pointer address is followed by the size of the
+	   data in use in that stack, in bytes.  This used to be a
+	   conditional around just the two extra args, but that might
+	   be undefined if yyoverflow is a macro.  */
+	yyoverflow (YY_("memory exhausted"),
+		    &yyss1, yysize * sizeof (*yyssp),
+		    &yyvs1, yysize * sizeof (*yyvsp),
+		    &yyls1, yysize * sizeof (*yylsp),
+		    &yystacksize);
+	yyls = yyls1;
+	yyss = yyss1;
+	yyvs = yyvs1;
+      }
+#else /* no yyoverflow */
+# ifndef YYSTACK_RELOCATE
+      goto yyexhaustedlab;
+# else
+      /* Extend the stack our own way.  */
+      if (YYMAXDEPTH <= yystacksize)
+	goto yyexhaustedlab;
+      yystacksize *= 2;
+      if (YYMAXDEPTH < yystacksize)
+	yystacksize = YYMAXDEPTH;
+
+      {
+	yytype_int16 *yyss1 = yyss;
+	union yyalloc *yyptr =
+	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
+	if (! yyptr)
+	  goto yyexhaustedlab;
+	YYSTACK_RELOCATE (yyss);
+	YYSTACK_RELOCATE (yyvs);
+	YYSTACK_RELOCATE (yyls);
+#  undef YYSTACK_RELOCATE
+	if (yyss1 != yyssa)
+	  YYSTACK_FREE (yyss1);
+      }
+# endif
+#endif /* no yyoverflow */
+
+      yyssp = yyss + yysize - 1;
+      yyvsp = yyvs + yysize - 1;
+      yylsp = yyls + yysize - 1;
+
+      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
+		  (unsigned long int) yystacksize));
+
+      if (yyss + yystacksize - 1 <= yyssp)
+	YYABORT;
     }
-    tm = TclpGetDate((TclpTime_t)&Start, 0);
-    Month = 12 * (tm->tm_year + TM_YEAR_BASE) + tm->tm_mon + RelMonth;
-    Year = Month / 12;
-    Month = Month % 12 + 1;
-    result = Convert(Month, (time_t) tm->tm_mday, Year,
-	    (time_t) tm->tm_hour, (time_t) tm->tm_min, (time_t) tm->tm_sec,
-	    MER24, DSTmaybe, &Julian);
 
-    /*
-     * The Julian time returned above is behind by one day, if "month" 
-     * or "year" is used to specify relative time and the GMT flag is true.
-     * This problem occurs only when the current time is closer to
-     * midnight, the difference being not more than its time difference
-     * with GMT. For example, in US/Pacific time zone, the problem occurs
-     * whenever the current time is between midnight to 8:00am or 7:00amDST.
-     * See Bug# 413397 for more details and sample script.
-     * To resolve this bug, we simply add the number of seconds corresponding
-     * to timezone difference with GMT to Julian time, if GMT flag is true.
-     */
+  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
+
+  goto yybackup;
+
+/*-----------.
+| yybackup.  |
+`-----------*/
+yybackup:
+
+  /* Do appropriate processing given the current state.  Read a
+     look-ahead token if we need one and don't already have one.  */
 
-    if (TclDateTimezone == 0) {
-        Julian += TclpGetTimeZone((unsigned long) Start) * 60L;
+  /* First try to decide what to do without reference to look-ahead token.  */
+  yyn = yypact[yystate];
+  if (yyn == YYPACT_NINF)
+    goto yydefault;
+
+  /* Not known => get a look-ahead token if don't already have one.  */
+
+  /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol.  */
+  if (yychar == YYEMPTY)
+    {
+      YYDPRINTF ((stderr, "Reading a token: "));
+      yychar = YYLEX;
     }
 
-    /*
-     * The following iteration takes into account the case were we jump
-     * into a "short month".  Far example, "one month from Jan 31" will
-     * fail because there is no Feb 31.  The code below will reduce the
-     * day and try converting the date until we succed or the date equals
-     * 28 (which always works unless the date is bad in another way).
-     */
+  if (yychar <= YYEOF)
+    {
+      yychar = yytoken = YYEOF;
+      YYDPRINTF ((stderr, "Now at end of input.\n"));
+    }
+  else
+    {
+      yytoken = YYTRANSLATE (yychar);
+      YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+    }
 
-    while ((result != 0) && (tm->tm_mday > 28)) {
-	tm->tm_mday--;
-	result = Convert(Month, (time_t) tm->tm_mday, Year,
-		(time_t) tm->tm_hour, (time_t) tm->tm_min, (time_t) tm->tm_sec,
-		MER24, DSTmaybe, &Julian);
+  /* If the proper action on seeing token YYTOKEN is to reduce or to
+     detect an error, take that action.  */
+  yyn += yytoken;
+  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
+    goto yydefault;
+  yyn = yytable[yyn];
+  if (yyn <= 0)
+    {
+      if (yyn == 0 || yyn == YYTABLE_NINF)
+	goto yyerrlab;
+      yyn = -yyn;
+      goto yyreduce;
     }
-    if (result != 0) {
-	return -1;
+
+  if (yyn == YYFINAL)
+    YYACCEPT;
+
+  /* Count tokens shifted since error; after three, turn off error
+     status.  */
+  if (yyerrstatus)
+    yyerrstatus--;
+
+  /* Shift the look-ahead token.  */
+  YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+  /* Discard the shifted token unless it is eof.  */
+  if (yychar != YYEOF)
+    yychar = YYEMPTY;
+
+  yystate = yyn;
+  *++yyvsp = yylval;
+  *++yylsp = yylloc;
+  goto yynewstate;
+
+
+/*-----------------------------------------------------------.
+| yydefault -- do the default action for the current state.  |
+`-----------------------------------------------------------*/
+yydefault:
+  yyn = yydefact[yystate];
+  if (yyn == 0)
+    goto yyerrlab;
+  goto yyreduce;
+
+
+/*-----------------------------.
+| yyreduce -- Do a reduction.  |
+`-----------------------------*/
+yyreduce:
+  /* yyn is the number of a rule to reduce with.  */
+  yylen = yyr2[yyn];
+
+  /* If YYLEN is nonzero, implement the default value of the action:
+     `$$ = $1'.
+
+     Otherwise, the following line sets YYVAL to garbage.
+     This behavior is undocumented and Bison
+     users should not rely upon it.  Assigning to YYVAL
+     unconditionally makes the parser a bit smaller, and it avoids a
+     GCC warning that YYVAL may be used uninitialized.  */
+  yyval = yyvsp[1-yylen];
+
+  /* Default location.  */
+  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);
+  YY_REDUCE_PRINT (yyn);
+  switch (yyn)
+    {
+        case 4:
+
+    {
+	    yyHaveTime++;
+	;}
+    break;
+
+  case 5:
+
+    {
+	    yyHaveZone++;
+	;}
+    break;
+
+  case 6:
+
+    {
+	    yyHaveDate++;
+	;}
+    break;
+
+  case 7:
+
+    {
+	    yyHaveOrdinalMonth++;
+	;}
+    break;
+
+  case 8:
+
+    {
+	    yyHaveDay++;
+	;}
+    break;
+
+  case 9:
+
+    {
+	    yyHaveRel++;
+	;}
+    break;
+
+  case 10:
+
+    {
+	    yyHaveTime++;
+	    yyHaveDate++;
+	;}
+    break;
+
+  case 11:
+
+    {
+	    yyHaveTime++;
+	    yyHaveDate++;
+	    yyHaveRel++;
+	;}
+    break;
+
+  case 13:
+
+    {
+	    yyHour = (yyvsp[(1) - (2)].Number);
+	    yyMinutes = 0;
+	    yySeconds = 0;
+	    yyMeridian = (yyvsp[(2) - (2)].Meridian);
+	;}
+    break;
+
+  case 14:
+
+    {
+	    yyHour = (yyvsp[(1) - (4)].Number);
+	    yyMinutes = (yyvsp[(3) - (4)].Number);
+	    yySeconds = 0;
+	    yyMeridian = (yyvsp[(4) - (4)].Meridian);
+	;}
+    break;
+
+  case 15:
+
+    {
+	    yyHour = (yyvsp[(1) - (5)].Number);
+	    yyMinutes = (yyvsp[(3) - (5)].Number);
+	    yyMeridian = MER24;
+	    yyDSTmode = DSToff;
+	    yyTimezone = ((yyvsp[(5) - (5)].Number) % 100 + ((yyvsp[(5) - (5)].Number) / 100) * 60);
+	    ++yyHaveZone;
+	;}
+    break;
+
+  case 16:
+
+    {
+	    yyHour = (yyvsp[(1) - (6)].Number);
+	    yyMinutes = (yyvsp[(3) - (6)].Number);
+	    yySeconds = (yyvsp[(5) - (6)].Number);
+	    yyMeridian = (yyvsp[(6) - (6)].Meridian);
+	;}
+    break;
+
+  case 17:
+
+    {
+	    yyHour = (yyvsp[(1) - (7)].Number);
+	    yyMinutes = (yyvsp[(3) - (7)].Number);
+	    yySeconds = (yyvsp[(5) - (7)].Number);
+	    yyMeridian = MER24;
+	    yyDSTmode = DSToff;
+	    yyTimezone = ((yyvsp[(7) - (7)].Number) % 100 + ((yyvsp[(7) - (7)].Number) / 100) * 60);
+	    ++yyHaveZone;
+	;}
+    break;
+
+  case 18:
+
+    {
+	    yyTimezone = (yyvsp[(1) - (2)].Number);
+	    yyDSTmode = DSTon;
+	;}
+    break;
+
+  case 19:
+
+    {
+	    yyTimezone = (yyvsp[(1) - (1)].Number);
+	    yyDSTmode = DSToff;
+	;}
+    break;
+
+  case 20:
+
+    {
+	    yyTimezone = (yyvsp[(1) - (1)].Number);
+	    yyDSTmode = DSTon;
+	;}
+    break;
+
+  case 21:
+
+    {
+	    yyDayOrdinal = 1;
+	    yyDayNumber = (yyvsp[(1) - (1)].Number);
+	;}
+    break;
+
+  case 22:
+
+    {
+	    yyDayOrdinal = 1;
+	    yyDayNumber = (yyvsp[(1) - (2)].Number);
+	;}
+    break;
+
+  case 23:
+
+    {
+	    yyDayOrdinal = (yyvsp[(1) - (2)].Number);
+	    yyDayNumber = (yyvsp[(2) - (2)].Number);
+	;}
+    break;
+
+  case 24:
+
+    {
+	    yyDayOrdinal = (yyvsp[(1) - (3)].Number) * (yyvsp[(2) - (3)].Number);
+	    yyDayNumber = (yyvsp[(3) - (3)].Number);
+	;}
+    break;
+
+  case 25:
+
+    {
+	    yyDayOrdinal = 2;
+	    yyDayNumber = (yyvsp[(2) - (2)].Number);
+	;}
+    break;
+
+  case 26:
+
+    {
+	    yyMonth = (yyvsp[(1) - (3)].Number);
+	    yyDay = (yyvsp[(3) - (3)].Number);
+	;}
+    break;
+
+  case 27:
+
+    {
+	    yyMonth = (yyvsp[(1) - (5)].Number);
+	    yyDay = (yyvsp[(3) - (5)].Number);
+	    yyYear = (yyvsp[(5) - (5)].Number);
+	;}
+    break;
+
+  case 28:
+
+    {
+	    yyYear = (yyvsp[(1) - (1)].Number) / 10000;
+	    yyMonth = ((yyvsp[(1) - (1)].Number) % 10000)/100;
+	    yyDay = (yyvsp[(1) - (1)].Number) % 100;
+	;}
+    break;
+
+  case 29:
+
+    {
+	    yyDay = (yyvsp[(1) - (5)].Number);
+	    yyMonth = (yyvsp[(3) - (5)].Number);
+	    yyYear = (yyvsp[(5) - (5)].Number);
+	;}
+    break;
+
+  case 30:
+
+    {
+	    yyMonth = (yyvsp[(3) - (5)].Number);
+	    yyDay = (yyvsp[(5) - (5)].Number);
+	    yyYear = (yyvsp[(1) - (5)].Number);
+	;}
+    break;
+
+  case 31:
+
+    {
+	    yyMonth = (yyvsp[(1) - (2)].Number);
+	    yyDay = (yyvsp[(2) - (2)].Number);
+	;}
+    break;
+
+  case 32:
+
+    {
+	    yyMonth = (yyvsp[(1) - (4)].Number);
+	    yyDay = (yyvsp[(2) - (4)].Number);
+	    yyYear = (yyvsp[(4) - (4)].Number);
+	;}
+    break;
+
+  case 33:
+
+    {
+	    yyMonth = (yyvsp[(2) - (2)].Number);
+	    yyDay = (yyvsp[(1) - (2)].Number);
+	;}
+    break;
+
+  case 34:
+
+    {
+	    yyMonth = 1;
+	    yyDay = 1;
+	    yyYear = EPOCH;
+	;}
+    break;
+
+  case 35:
+
+    {
+	    yyMonth = (yyvsp[(2) - (3)].Number);
+	    yyDay = (yyvsp[(1) - (3)].Number);
+	    yyYear = (yyvsp[(3) - (3)].Number);
+	;}
+    break;
+
+  case 36:
+
+    {
+	    yyMonthOrdinal = 1;
+	    yyMonth = (yyvsp[(2) - (2)].Number);
+	;}
+    break;
+
+  case 37:
+
+    {
+	    yyMonthOrdinal = (yyvsp[(2) - (3)].Number);
+	    yyMonth = (yyvsp[(3) - (3)].Number);
+	;}
+    break;
+
+  case 38:
+
+    {
+	    if ((yyvsp[(2) - (3)].Number) != HOUR( 7)) YYABORT;
+	    yyYear = (yyvsp[(1) - (3)].Number) / 10000;
+	    yyMonth = ((yyvsp[(1) - (3)].Number) % 10000)/100;
+	    yyDay = (yyvsp[(1) - (3)].Number) % 100;
+	    yyHour = (yyvsp[(3) - (3)].Number) / 10000;
+	    yyMinutes = ((yyvsp[(3) - (3)].Number) % 10000)/100;
+	    yySeconds = (yyvsp[(3) - (3)].Number) % 100;
+	;}
+    break;
+
+  case 39:
+
+    {
+	    if ((yyvsp[(2) - (7)].Number) != HOUR( 7)) YYABORT;
+	    yyYear = (yyvsp[(1) - (7)].Number) / 10000;
+	    yyMonth = ((yyvsp[(1) - (7)].Number) % 10000)/100;
+	    yyDay = (yyvsp[(1) - (7)].Number) % 100;
+	    yyHour = (yyvsp[(3) - (7)].Number);
+	    yyMinutes = (yyvsp[(5) - (7)].Number);
+	    yySeconds = (yyvsp[(7) - (7)].Number);
+	;}
+    break;
+
+  case 40:
+
+    {
+	    yyYear = (yyvsp[(1) - (2)].Number) / 10000;
+	    yyMonth = ((yyvsp[(1) - (2)].Number) % 10000)/100;
+	    yyDay = (yyvsp[(1) - (2)].Number) % 100;
+	    yyHour = (yyvsp[(2) - (2)].Number) / 10000;
+	    yyMinutes = ((yyvsp[(2) - (2)].Number) % 10000)/100;
+	    yySeconds = (yyvsp[(2) - (2)].Number) % 100;
+	;}
+    break;
+
+  case 41:
+
+    {
+	    /*
+	     * Offset computed year by -377 so that the returned years will be
+	     * in a range accessible with a 32 bit clock seconds value.
+	     */
+
+	    yyYear = (yyvsp[(2) - (4)].Number)/1000 + 2323 - 377;
+	    yyDay  = 1;
+	    yyMonth = 1;
+	    yyRelDay += (((yyvsp[(2) - (4)].Number)%1000)*(365 + IsLeapYear(yyYear)))/1000;
+	    yyRelSeconds += (yyvsp[(4) - (4)].Number) * 144 * 60;
+	;}
+    break;
+
+  case 42:
+
+    {
+	    yyRelSeconds *= -1;
+	    yyRelMonth *= -1;
+	    yyRelDay *= -1;
+	;}
+    break;
+
+  case 44:
+
+    {
+	    *yyRelPointer += (yyvsp[(1) - (3)].Number) * (yyvsp[(2) - (3)].Number) * (yyvsp[(3) - (3)].Number);
+	;}
+    break;
+
+  case 45:
+
+    {
+	    *yyRelPointer += (yyvsp[(1) - (2)].Number) * (yyvsp[(2) - (2)].Number);
+	;}
+    break;
+
+  case 46:
+
+    {
+	    *yyRelPointer += (yyvsp[(2) - (2)].Number);
+	;}
+    break;
+
+  case 47:
+
+    {
+	    *yyRelPointer += (yyvsp[(2) - (3)].Number) * (yyvsp[(3) - (3)].Number);
+	;}
+    break;
+
+  case 48:
+
+    {
+	    *yyRelPointer += (yyvsp[(1) - (1)].Number);
+	;}
+    break;
+
+  case 49:
+
+    {
+	    (yyval.Number) = -1;
+	;}
+    break;
+
+  case 50:
+
+    {
+	    (yyval.Number) =  1;
+	;}
+    break;
+
+  case 51:
+
+    {
+	    (yyval.Number) = (yyvsp[(1) - (1)].Number);
+	    yyRelPointer = &yyRelSeconds;
+	;}
+    break;
+
+  case 52:
+
+    {
+	    (yyval.Number) = (yyvsp[(1) - (1)].Number);
+	    yyRelPointer = &yyRelDay;
+	;}
+    break;
+
+  case 53:
+
+    {
+	    (yyval.Number) = (yyvsp[(1) - (1)].Number);
+	    yyRelPointer = &yyRelMonth;
+	;}
+    break;
+
+  case 54:
+
+    {
+	    if (yyHaveTime && yyHaveDate && !yyHaveRel) {
+		yyYear = (yyvsp[(1) - (1)].Number);
+	    } else {
+		yyHaveTime++;
+		if (yyDigitCount <= 2) {
+		    yyHour = (yyvsp[(1) - (1)].Number);
+		    yyMinutes = 0;
+		} else {
+		    yyHour = (yyvsp[(1) - (1)].Number) / 100;
+		    yyMinutes = (yyvsp[(1) - (1)].Number) % 100;
+		}
+		yySeconds = 0;
+		yyMeridian = MER24;
+	    }
+	;}
+    break;
+
+  case 55:
+
+    {
+	    (yyval.Meridian) = MER24;
+	;}
+    break;
+
+  case 56:
+
+    {
+	    (yyval.Meridian) = (yyvsp[(1) - (1)].Meridian);
+	;}
+    break;
+
+
+/* Line 1267 of yacc.c.  */
+
+      default: break;
     }
-    *TimePtr = DSTcorrect(Start, Julian);
-    return 0;
+  YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc);
+
+  YYPOPSTACK (yylen);
+  yylen = 0;
+  YY_STACK_PRINT (yyss, yyssp);
+
+  *++yyvsp = yyval;
+  *++yylsp = yyloc;
+
+  /* Now `shift' the result of the reduction.  Determine what state
+     that goes to, based on the state we popped back to and the rule
+     number reduced by.  */
+
+  yyn = yyr1[yyn];
+
+  yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
+  if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)
+    yystate = yytable[yystate];
+  else
+    yystate = yydefgoto[yyn - YYNTOKENS];
+
+  goto yynewstate;
+
+
+/*------------------------------------.
+| yyerrlab -- here on detecting error |
+`------------------------------------*/
+yyerrlab:
+  /* If not already recovering from an error, report this error.  */
+  if (!yyerrstatus)
+    {
+      ++yynerrs;
+#if ! YYERROR_VERBOSE
+      yyerror (&yylloc, info, YY_("syntax error"));
+#else
+      {
+	YYSIZE_T yysize = yysyntax_error (0, yystate, yychar);
+	if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM)
+	  {
+	    YYSIZE_T yyalloc = 2 * yysize;
+	    if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM))
+	      yyalloc = YYSTACK_ALLOC_MAXIMUM;
+	    if (yymsg != yymsgbuf)
+	      YYSTACK_FREE (yymsg);
+	    yymsg = (char *) YYSTACK_ALLOC (yyalloc);
+	    if (yymsg)
+	      yymsg_alloc = yyalloc;
+	    else
+	      {
+		yymsg = yymsgbuf;
+		yymsg_alloc = sizeof yymsgbuf;
+	      }
+	  }
+
+	if (0 < yysize && yysize <= yymsg_alloc)
+	  {
+	    (void) yysyntax_error (yymsg, yystate, yychar);
+	    yyerror (&yylloc, info, yymsg);
+	  }
+	else
+	  {
+	    yyerror (&yylloc, info, YY_("syntax error"));
+	    if (yysize != 0)
+	      goto yyexhaustedlab;
+	  }
+      }
+#endif
+    }
+
+  yyerror_range[0] = yylloc;
+
+  if (yyerrstatus == 3)
+    {
+      /* If just tried and failed to reuse look-ahead token after an
+	 error, discard it.  */
+
+      if (yychar <= YYEOF)
+	{
+	  /* Return failure if at end of input.  */
+	  if (yychar == YYEOF)
+	    YYABORT;
+	}
+      else
+	{
+	  yydestruct ("Error: discarding",
+		      yytoken, &yylval, &yylloc, info);
+	  yychar = YYEMPTY;
+	}
+    }
+
+  /* Else will try to reuse look-ahead token after shifting the error
+     token.  */
+  goto yyerrlab1;
+
+
+/*---------------------------------------------------.
+| yyerrorlab -- error raised explicitly by YYERROR.  |
+`---------------------------------------------------*/
+yyerrorlab:
+
+  /* Pacify compilers like GCC when the user code never invokes
+     YYERROR and the label yyerrorlab therefore never appears in user
+     code.  */
+  if (/*CONSTCOND*/ 0)
+     goto yyerrorlab;
+
+  yyerror_range[0] = yylsp[1-yylen];
+  /* Do not reclaim the symbols of the rule which action triggered
+     this YYERROR.  */
+  YYPOPSTACK (yylen);
+  yylen = 0;
+  YY_STACK_PRINT (yyss, yyssp);
+  yystate = *yyssp;
+  goto yyerrlab1;
+
+
+/*-------------------------------------------------------------.
+| yyerrlab1 -- common code for both syntax error and YYERROR.  |
+`-------------------------------------------------------------*/
+yyerrlab1:
+  yyerrstatus = 3;	/* Each real token shifted decrements this.  */
+
+  for (;;)
+    {
+      yyn = yypact[yystate];
+      if (yyn != YYPACT_NINF)
+	{
+	  yyn += YYTERROR;
+	  if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
+	    {
+	      yyn = yytable[yyn];
+	      if (0 < yyn)
+		break;
+	    }
+	}
+
+      /* Pop the current state because it cannot handle the error token.  */
+      if (yyssp == yyss)
+	YYABORT;
+
+      yyerror_range[0] = *yylsp;
+      yydestruct ("Error: popping",
+		  yystos[yystate], yyvsp, yylsp, info);
+      YYPOPSTACK (1);
+      yystate = *yyssp;
+      YY_STACK_PRINT (yyss, yyssp);
+    }
+
+  if (yyn == YYFINAL)
+    YYACCEPT;
+
+  *++yyvsp = yylval;
+
+  yyerror_range[1] = yylloc;
+  /* Using YYLLOC is tempting, but would change the location of
+     the look-ahead.  YYLOC is available though.  */
+  YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
+  *++yylsp = yyloc;
+
+  /* Shift the error token.  */
+  YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp);
+
+  yystate = yyn;
+  goto yynewstate;
+
+
+/*-------------------------------------.
+| yyacceptlab -- YYACCEPT comes here.  |
+`-------------------------------------*/
+yyacceptlab:
+  yyresult = 0;
+  goto yyreturn;
+
+/*-----------------------------------.
+| yyabortlab -- YYABORT comes here.  |
+`-----------------------------------*/
+yyabortlab:
+  yyresult = 1;
+  goto yyreturn;
+
+#ifndef yyoverflow
+/*-------------------------------------------------.
+| yyexhaustedlab -- memory exhaustion comes here.  |
+`-------------------------------------------------*/
+yyexhaustedlab:
+  yyerror (&yylloc, info, YY_("memory exhausted"));
+  yyresult = 2;
+  /* Fall through.  */
+#endif
+
+yyreturn:
+  if (yychar != YYEOF && yychar != YYEMPTY)
+     yydestruct ("Cleanup: discarding lookahead",
+		 yytoken, &yylval, &yylloc, info);
+  /* Do not reclaim the symbols of the rule which action triggered
+     this YYABORT or YYACCEPT.  */
+  YYPOPSTACK (yylen);
+  YY_STACK_PRINT (yyss, yyssp);
+  while (yyssp != yyss)
+    {
+      yydestruct ("Cleanup: popping",
+		  yystos[*yyssp], yyvsp, yylsp, info);
+      YYPOPSTACK (1);
+    }
+#ifndef yyoverflow
+  if (yyss != yyssa)
+    YYSTACK_FREE (yyss);
+#endif
+#if YYERROR_VERBOSE
+  if (yymsg != yymsgbuf)
+    YYSTACK_FREE (yymsg);
+#endif
+  /* Make sure YYID is used.  */
+  return YYID (yyresult);
 }
 
 
+
+
+MODULE_SCOPE int yychar;
+MODULE_SCOPE YYSTYPE yylval;
+MODULE_SCOPE int yynerrs;
+
 /*
- *-----------------------------------------------------------------------------
- *
- * RelativeDay --
- *
- *      Given a starting time and a number of days before or after, compute the
- *      DST corrected difference between those dates.
- *
- * Results:
- *     1 or -1 indicating success or failure.
- *
- * Side effects:
- *      Fills TimePtr with the computed value.
- *
- *-----------------------------------------------------------------------------
+ * Month and day table.
  */
 
-static int
-RelativeDay(Start, RelDay, TimePtr)
-    time_t Start;
-    time_t RelDay;
-    time_t *TimePtr;
+static const TABLE MonthDayTable[] = {
+    { "january",	tMONTH,	 1 },
+    { "february",	tMONTH,	 2 },
+    { "march",		tMONTH,	 3 },
+    { "april",		tMONTH,	 4 },
+    { "may",		tMONTH,	 5 },
+    { "june",		tMONTH,	 6 },
+    { "july",		tMONTH,	 7 },
+    { "august",		tMONTH,	 8 },
+    { "september",	tMONTH,	 9 },
+    { "sept",		tMONTH,	 9 },
+    { "october",	tMONTH, 10 },
+    { "november",	tMONTH, 11 },
+    { "december",	tMONTH, 12 },
+    { "sunday",		tDAY, 0 },
+    { "monday",		tDAY, 1 },
+    { "tuesday",	tDAY, 2 },
+    { "tues",		tDAY, 2 },
+    { "wednesday",	tDAY, 3 },
+    { "wednes",		tDAY, 3 },
+    { "thursday",	tDAY, 4 },
+    { "thur",		tDAY, 4 },
+    { "thurs",		tDAY, 4 },
+    { "friday",		tDAY, 5 },
+    { "saturday",	tDAY, 6 },
+    { NULL }
+};
+
+/*
+ * Time units table.
+ */
+
+static const TABLE UnitsTable[] = {
+    { "year",		tMONTH_UNIT,	12 },
+    { "month",		tMONTH_UNIT,	 1 },
+    { "fortnight",	tDAY_UNIT,	14 },
+    { "week",		tDAY_UNIT,	 7 },
+    { "day",		tDAY_UNIT,	 1 },
+    { "hour",		tSEC_UNIT, 60 * 60 },
+    { "minute",		tSEC_UNIT,	60 },
+    { "min",		tSEC_UNIT,	60 },
+    { "second",		tSEC_UNIT,	 1 },
+    { "sec",		tSEC_UNIT,	 1 },
+    { NULL }
+};
+
+/*
+ * Assorted relative-time words.
+ */
+
+static const TABLE OtherTable[] = {
+    { "tomorrow",	tDAY_UNIT,	1 },
+    { "yesterday",	tDAY_UNIT,	-1 },
+    { "today",		tDAY_UNIT,	0 },
+    { "now",		tSEC_UNIT,	0 },
+    { "last",		tUNUMBER,	-1 },
+    { "this",		tSEC_UNIT,	0 },
+    { "next",		tNEXT,		1 },
+#if 0
+    { "first",		tUNUMBER,	1 },
+    { "second",		tUNUMBER,	2 },
+    { "third",		tUNUMBER,	3 },
+    { "fourth",		tUNUMBER,	4 },
+    { "fifth",		tUNUMBER,	5 },
+    { "sixth",		tUNUMBER,	6 },
+    { "seventh",	tUNUMBER,	7 },
+    { "eighth",		tUNUMBER,	8 },
+    { "ninth",		tUNUMBER,	9 },
+    { "tenth",		tUNUMBER,	10 },
+    { "eleventh",	tUNUMBER,	11 },
+    { "twelfth",	tUNUMBER,	12 },
+#endif
+    { "ago",		tAGO,		1 },
+    { "epoch",		tEPOCH,		0 },
+    { "stardate",	tSTARDATE,	0 },
+    { NULL }
+};
+
+/*
+ * The timezone table. (Note: This table was modified to not use any floating
+ * point constants to work around an SGI compiler bug).
+ */
+
+static const TABLE TimezoneTable[] = {
+    { "gmt",	tZONE,	   HOUR( 0) },	    /* Greenwich Mean */
+    { "ut",	tZONE,	   HOUR( 0) },	    /* Universal (Coordinated) */
+    { "utc",	tZONE,	   HOUR( 0) },
+    { "uct",	tZONE,	   HOUR( 0) },	    /* Universal Coordinated Time */
+    { "wet",	tZONE,	   HOUR( 0) },	    /* Western European */
+    { "bst",	tDAYZONE,  HOUR( 0) },	    /* British Summer */
+    { "wat",	tZONE,	   HOUR( 1) },	    /* West Africa */
+    { "at",	tZONE,	   HOUR( 2) },	    /* Azores */
+#if	0
+    /* For completeness.  BST is also British Summer, and GST is
+     * also Guam Standard. */
+    { "bst",	tZONE,	   HOUR( 3) },	    /* Brazil Standard */
+    { "gst",	tZONE,	   HOUR( 3) },	    /* Greenland Standard */
+#endif
+    { "nft",	tZONE,	   HOUR( 7/2) },    /* Newfoundland */
+    { "nst",	tZONE,	   HOUR( 7/2) },    /* Newfoundland Standard */
+    { "ndt",	tDAYZONE,  HOUR( 7/2) },    /* Newfoundland Daylight */
+    { "ast",	tZONE,	   HOUR( 4) },	    /* Atlantic Standard */
+    { "adt",	tDAYZONE,  HOUR( 4) },	    /* Atlantic Daylight */
+    { "est",	tZONE,	   HOUR( 5) },	    /* Eastern Standard */
+    { "edt",	tDAYZONE,  HOUR( 5) },	    /* Eastern Daylight */
+    { "cst",	tZONE,	   HOUR( 6) },	    /* Central Standard */
+    { "cdt",	tDAYZONE,  HOUR( 6) },	    /* Central Daylight */
+    { "mst",	tZONE,	   HOUR( 7) },	    /* Mountain Standard */
+    { "mdt",	tDAYZONE,  HOUR( 7) },	    /* Mountain Daylight */
+    { "pst",	tZONE,	   HOUR( 8) },	    /* Pacific Standard */
+    { "pdt",	tDAYZONE,  HOUR( 8) },	    /* Pacific Daylight */
+    { "yst",	tZONE,	   HOUR( 9) },	    /* Yukon Standard */
+    { "ydt",	tDAYZONE,  HOUR( 9) },	    /* Yukon Daylight */
+    { "hst",	tZONE,	   HOUR(10) },	    /* Hawaii Standard */
+    { "hdt",	tDAYZONE,  HOUR(10) },	    /* Hawaii Daylight */
+    { "cat",	tZONE,	   HOUR(10) },	    /* Central Alaska */
+    { "ahst",	tZONE,	   HOUR(10) },	    /* Alaska-Hawaii Standard */
+    { "nt",	tZONE,	   HOUR(11) },	    /* Nome */
+    { "idlw",	tZONE,	   HOUR(12) },	    /* International Date Line West */
+    { "cet",	tZONE,	  -HOUR( 1) },	    /* Central European */
+    { "cest",	tDAYZONE, -HOUR( 1) },	    /* Central European Summer */
+    { "met",	tZONE,	  -HOUR( 1) },	    /* Middle European */
+    { "mewt",	tZONE,	  -HOUR( 1) },	    /* Middle European Winter */
+    { "mest",	tDAYZONE, -HOUR( 1) },	    /* Middle European Summer */
+    { "swt",	tZONE,	  -HOUR( 1) },	    /* Swedish Winter */
+    { "sst",	tDAYZONE, -HOUR( 1) },	    /* Swedish Summer */
+    { "fwt",	tZONE,	  -HOUR( 1) },	    /* French Winter */
+    { "fst",	tDAYZONE, -HOUR( 1) },	    /* French Summer */
+    { "eet",	tZONE,	  -HOUR( 2) },	    /* Eastern Europe, USSR Zone 1 */
+    { "bt",	tZONE,	  -HOUR( 3) },	    /* Baghdad, USSR Zone 2 */
+    { "it",	tZONE,	  -HOUR( 7/2) },    /* Iran */
+    { "zp4",	tZONE,	  -HOUR( 4) },	    /* USSR Zone 3 */
+    { "zp5",	tZONE,	  -HOUR( 5) },	    /* USSR Zone 4 */
+    { "ist",	tZONE,	  -HOUR(11/2) },    /* Indian Standard */
+    { "zp6",	tZONE,	  -HOUR( 6) },	    /* USSR Zone 5 */
+#if	0
+    /* For completeness.  NST is also Newfoundland Stanard, nad SST is
+     * also Swedish Summer. */
+    { "nst",	tZONE,	  -HOUR(13/2) },    /* North Sumatra */
+    { "sst",	tZONE,	  -HOUR( 7) },	    /* South Sumatra, USSR Zone 6 */
+#endif	/* 0 */
+    { "wast",	tZONE,	  -HOUR( 7) },	    /* West Australian Standard */
+    { "wadt",	tDAYZONE, -HOUR( 7) },	    /* West Australian Daylight */
+    { "jt",	tZONE,	  -HOUR(15/2) },    /* Java (3pm in Cronusland!) */
+    { "cct",	tZONE,	  -HOUR( 8) },	    /* China Coast, USSR Zone 7 */
+    { "jst",	tZONE,	  -HOUR( 9) },	    /* Japan Standard, USSR Zone 8 */
+    { "jdt",	tDAYZONE, -HOUR( 9) },	    /* Japan Daylight */
+    { "kst",	tZONE,	  -HOUR( 9) },	    /* Korea Standard */
+    { "kdt",	tDAYZONE, -HOUR( 9) },	    /* Korea Daylight */
+    { "cast",	tZONE,	  -HOUR(19/2) },    /* Central Australian Standard */
+    { "cadt",	tDAYZONE, -HOUR(19/2) },    /* Central Australian Daylight */
+    { "east",	tZONE,	  -HOUR(10) },	    /* Eastern Australian Standard */
+    { "eadt",	tDAYZONE, -HOUR(10) },	    /* Eastern Australian Daylight */
+    { "gst",	tZONE,	  -HOUR(10) },	    /* Guam Standard, USSR Zone 9 */
+    { "nzt",	tZONE,	  -HOUR(12) },	    /* New Zealand */
+    { "nzst",	tZONE,	  -HOUR(12) },	    /* New Zealand Standard */
+    { "nzdt",	tDAYZONE, -HOUR(12) },	    /* New Zealand Daylight */
+    { "idle",	tZONE,	  -HOUR(12) },	    /* International Date Line East */
+    /* ADDED BY Marco Nijdam */
+    { "dst",	tDST,	  HOUR( 0) },	    /* DST on (hour is ignored) */
+    /* End ADDED */
+    {  NULL  }
+};
+
+/*
+ * Military timezone table.
+ */
+
+static const TABLE MilitaryTable[] = {
+    { "a",	tZONE,	-HOUR( 1) },
+    { "b",	tZONE,	-HOUR( 2) },
+    { "c",	tZONE,	-HOUR( 3) },
+    { "d",	tZONE,	-HOUR( 4) },
+    { "e",	tZONE,	-HOUR( 5) },
+    { "f",	tZONE,	-HOUR( 6) },
+    { "g",	tZONE,	-HOUR( 7) },
+    { "h",	tZONE,	-HOUR( 8) },
+    { "i",	tZONE,	-HOUR( 9) },
+    { "k",	tZONE,	-HOUR(10) },
+    { "l",	tZONE,	-HOUR(11) },
+    { "m",	tZONE,	-HOUR(12) },
+    { "n",	tZONE,	HOUR(  1) },
+    { "o",	tZONE,	HOUR(  2) },
+    { "p",	tZONE,	HOUR(  3) },
+    { "q",	tZONE,	HOUR(  4) },
+    { "r",	tZONE,	HOUR(  5) },
+    { "s",	tZONE,	HOUR(  6) },
+    { "t",	tZONE,	HOUR(  7) },
+    { "u",	tZONE,	HOUR(  8) },
+    { "v",	tZONE,	HOUR(  9) },
+    { "w",	tZONE,	HOUR( 10) },
+    { "x",	tZONE,	HOUR( 11) },
+    { "y",	tZONE,	HOUR( 12) },
+    { "z",	tZONE,	HOUR( 0) },
+    { NULL }
+};
+
+/*
+ * Dump error messages in the bit bucket.
+ */
+
+static void
+TclDateerror(
+    YYLTYPE* location,
+    DateInfo* infoPtr,
+    const char *s)
 {
-    time_t new;
+    Tcl_Obj* t;
+    Tcl_AppendToObj(infoPtr->messages, infoPtr->separatrix, -1);
+    Tcl_AppendToObj(infoPtr->messages, s, -1);
+    Tcl_AppendToObj(infoPtr->messages, " (characters ", -1);
+    t = Tcl_NewIntObj(location->first_column);
+    Tcl_IncrRefCount(t);
+    Tcl_AppendObjToObj(infoPtr->messages, t);
+    Tcl_DecrRefCount(t);
+    Tcl_AppendToObj(infoPtr->messages, "-", -1);
+    t = Tcl_NewIntObj(location->last_column);
+    Tcl_IncrRefCount(t);
+    Tcl_AppendObjToObj(infoPtr->messages, t);
+    Tcl_DecrRefCount(t);
+    Tcl_AppendToObj(infoPtr->messages, ")", -1);
+    infoPtr->separatrix = "\n";
+}
 
-    new = Start + (RelDay * 60 * 60 * 24);
-    *TimePtr = DSTcorrect(Start, new);
-    return 1;
+static time_t
+ToSeconds(
+    time_t Hours,
+    time_t Minutes,
+    time_t Seconds,
+    MERIDIAN Meridian)
+{
+    if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59) {
+	return -1;
+    }
+    switch (Meridian) {
+    case MER24:
+	if (Hours < 0 || Hours > 23) {
+	    return -1;
+	}
+	return (Hours * 60L + Minutes) * 60L + Seconds;
+    case MERam:
+	if (Hours < 1 || Hours > 12) {
+	    return -1;
+	}
+	return ((Hours % 12) * 60L + Minutes) * 60L + Seconds;
+    case MERpm:
+	if (Hours < 1 || Hours > 12) {
+	    return -1;
+	}
+	return (((Hours % 12) + 12) * 60L + Minutes) * 60L + Seconds;
+    }
+    return -1;			/* Should never be reached */
 }
 
 static int
-LookupWord(buff)
-    char                *buff;
+LookupWord(
+    YYSTYPE* yylvalPtr,
+    char *buff)
 {
     register char *p;
     register char *q;
-    register CONST TABLE *tp;
-    int i;
-    int abbrev;
+    register const TABLE *tp;
+    int i, abbrev;
 
     /*
      * Make it lowercase.
@@ -660,1208 +2570,347 @@ LookupWord(buff)
     Tcl_UtfToLower(buff);
 
     if (strcmp(buff, "am") == 0 || strcmp(buff, "a.m.") == 0) {
-        TclDatelval.Meridian = MERam;
-        return tMERIDIAN;
+	yylvalPtr->Meridian = MERam;
+	return tMERIDIAN;
     }
     if (strcmp(buff, "pm") == 0 || strcmp(buff, "p.m.") == 0) {
-        TclDatelval.Meridian = MERpm;
-        return tMERIDIAN;
+	yylvalPtr->Meridian = MERpm;
+	return tMERIDIAN;
     }
 
     /*
      * See if we have an abbreviation for a month.
      */
+
     if (strlen(buff) == 3) {
-        abbrev = 1;
+	abbrev = 1;
     } else if (strlen(buff) == 4 && buff[3] == '.') {
-        abbrev = 1;
-        buff[3] = '\0';
+	abbrev = 1;
+	buff[3] = '\0';
     } else {
-        abbrev = 0;
+	abbrev = 0;
     }
 
     for (tp = MonthDayTable; tp->name; tp++) {
-        if (abbrev) {
-            if (strncmp(buff, tp->name, 3) == 0) {
-                TclDatelval.Number = tp->value;
-                return tp->type;
-            }
-        } else if (strcmp(buff, tp->name) == 0) {
-            TclDatelval.Number = tp->value;
-            return tp->type;
-        }
+	if (abbrev) {
+	    if (strncmp(buff, tp->name, 3) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
+	} else if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     for (tp = TimezoneTable; tp->name; tp++) {
-        if (strcmp(buff, tp->name) == 0) {
-            TclDatelval.Number = tp->value;
-            return tp->type;
-        }
+	if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     for (tp = UnitsTable; tp->name; tp++) {
-        if (strcmp(buff, tp->name) == 0) {
-            TclDatelval.Number = tp->value;
-            return tp->type;
-        }
+	if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     /*
      * Strip off any plural and try the units table again.
      */
+
     i = strlen(buff) - 1;
-    if (buff[i] == 's') {
-        buff[i] = '\0';
-        for (tp = UnitsTable; tp->name; tp++) {
-            if (strcmp(buff, tp->name) == 0) {
-                TclDatelval.Number = tp->value;
-                return tp->type;
-            }
+    if (i > 0 && buff[i] == 's') {
+	buff[i] = '\0';
+	for (tp = UnitsTable; tp->name; tp++) {
+	    if (strcmp(buff, tp->name) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
 	}
     }
 
     for (tp = OtherTable; tp->name; tp++) {
-        if (strcmp(buff, tp->name) == 0) {
-            TclDatelval.Number = tp->value;
-            return tp->type;
-        }
+	if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     /*
      * Military timezones.
      */
+
     if (buff[1] == '\0' && !(*buff & 0x80)
-	    && isalpha(UCHAR(*buff))) {	/* INTL: ISO only */
-        for (tp = MilitaryTable; tp->name; tp++) {
-            if (strcmp(buff, tp->name) == 0) {
-                TclDatelval.Number = tp->value;
-                return tp->type;
-            }
+	    && isalpha(UCHAR(*buff))) {			/* INTL: ISO only */
+	for (tp = MilitaryTable; tp->name; tp++) {
+	    if (strcmp(buff, tp->name) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
 	}
     }
 
     /*
      * Drop out any periods and try the timezone table again.
      */
-    for (i = 0, p = q = buff; *q; q++)
-        if (*q != '.') {
-            *p++ = *q;
-        } else {
-            i++;
+
+    for (i = 0, p = q = buff; *q; q++) {
+	if (*q != '.') {
+	    *p++ = *q;
+	} else {
+	    i++;
 	}
+    }
     *p = '\0';
     if (i) {
-        for (tp = TimezoneTable; tp->name; tp++) {
-            if (strcmp(buff, tp->name) == 0) {
-                TclDatelval.Number = tp->value;
-                return tp->type;
-            }
+	for (tp = TimezoneTable; tp->name; tp++) {
+	    if (strcmp(buff, tp->name) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
 	}
     }
-    
+
     return tID;
 }
 
-
 static int
-TclDatelex()
+TclDatelex(
+    YYSTYPE* yylvalPtr,
+    YYLTYPE* location,
+    DateInfo *info)
 {
-    register char       c;
-    register char       *p;
-    char                buff[20];
-    int                 Count;
+    register char c;
+    register char *p;
+    char buff[20];
+    int Count;
 
+    location->first_column = yyInput - info->dateStart;
     for ( ; ; ) {
-        while (isspace(UCHAR(*TclDateInput))) {
-            TclDateInput++;
+	while (isspace(UCHAR(*yyInput))) {
+	    yyInput++;
 	}
 
-        if (isdigit(UCHAR(c = *TclDateInput))) { /* INTL: digit */
-	    /* convert the string into a number; count the number of digits */
+	if (isdigit(UCHAR(c = *yyInput))) { /* INTL: digit */
+	    /*
+	     * Convert the string into a number; count the number of digits.
+	     */
+
 	    Count = 0;
-            for (TclDatelval.Number = 0;
-		    isdigit(UCHAR(c = *TclDateInput++)); ) { /* INTL: digit */
-                TclDatelval.Number = 10 * TclDatelval.Number + c - '0';
+	    for (yylvalPtr->Number = 0;
+		    isdigit(UCHAR(c = *yyInput++)); ) {	  /* INTL: digit */
+		yylvalPtr->Number = 10 * yylvalPtr->Number + c - '0';
 		Count++;
 	    }
-            TclDateInput--;
-	    /* A number with 6 or more digits is considered an ISO 8601 base */
+	    yyInput--;
+	    yyDigitCount = Count;
+
+	    /*
+	     * A number with 6 or more digits is considered an ISO 8601 base.
+	     */
+
 	    if (Count >= 6) {
+		location->last_column = yyInput - info->dateStart - 1;
 		return tISOBASE;
 	    } else {
+		location->last_column = yyInput - info->dateStart - 1;
 		return tUNUMBER;
 	    }
-        }
-        if (!(c & 0x80) && isalpha(UCHAR(c))) {	/* INTL: ISO only. */
-            for (p = buff; isalpha(UCHAR(c = *TclDateInput++)) /* INTL: ISO only. */
+	}
+	if (!(c & 0x80) && isalpha(UCHAR(c))) {		  /* INTL: ISO only. */
+	    for (p = buff; isalpha(UCHAR(c = *yyInput++)) /* INTL: ISO only. */
 		     || c == '.'; ) {
-                if (p < &buff[sizeof buff - 1]) {
-                    *p++ = c;
+		if (p < &buff[sizeof buff - 1]) {
+		    *p++ = c;
 		}
 	    }
-            *p = '\0';
-            TclDateInput--;
-            return LookupWord(buff);
-        }
-        if (c != '(') {
-            return *TclDateInput++;
+	    *p = '\0';
+	    yyInput--;
+	    location->last_column = yyInput - info->dateStart - 1;
+	    return LookupWord(yylvalPtr, buff);
+	}
+	if (c != '(') {
+	    location->last_column = yyInput - info->dateStart;
+	    return *yyInput++;
 	}
-        Count = 0;
-        do {
-            c = *TclDateInput++;
-            if (c == '\0') {
-                return c;
+	Count = 0;
+	do {
+	    c = *yyInput++;
+	    if (c == '\0') {
+		location->last_column = yyInput - info->dateStart - 1;
+		return c;
 	    } else if (c == '(') {
-                Count++;
+		Count++;
 	    } else if (c == ')') {
-                Count--;
+		Count--;
 	    }
-        } while (Count > 0);
+	} while (Count > 0);
     }
 }
 
-/*
- * Specify zone is of -50000 to force GMT.  (This allows BST to work).
- */
-
 int
-TclGetDate(p, now, zone, timePtr)
-    char *p;
-    Tcl_WideInt now;
-    long zone;
-    Tcl_WideInt *timePtr;
+TclClockOldscanObjCmd(
+    ClientData clientData,	/* Unused */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int objc,			/* Count of paraneters */
+    Tcl_Obj *CONST *objv)	/* Parameters */
 {
-    struct tm *tm;
-    time_t Start;
-    time_t Time;
-    time_t tod;
-    int thisyear;
-
-    TclDateInput = p;
-    /* now has to be cast to a time_t for 64bit compliance */
-    Start = (time_t) now;
-    tm = TclpGetDate((TclpTime_t) &Start, (zone == -50000));
-    thisyear = tm->tm_year + TM_YEAR_BASE;
-    TclDateYear = thisyear;
-    TclDateMonth = tm->tm_mon + 1;
-    TclDateDay = tm->tm_mday;
-    TclDateTimezone = zone;
-    if (zone == -50000) {
-        TclDateDSTmode = DSToff;  /* assume GMT */
-        TclDateTimezone = 0;
-    } else {
-        TclDateDSTmode = DSTmaybe;
+    Tcl_Obj *result, *resultElement;
+    int yr, mo, da;
+    DateInfo dateInfo;
+    DateInfo* info = &dateInfo;
+    int status;
+
+    if (objc != 5) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"stringToParse baseYear baseMonth baseDay" );
+	return TCL_ERROR;
     }
-    TclDateHour = 0;
-    TclDateMinutes = 0;
-    TclDateSeconds = 0;
-    TclDateMeridian = MER24;
-    TclDateRelSeconds = 0;
-    TclDateRelMonth = 0;
-    TclDateRelDay = 0;
-    TclDateRelPointer = NULL;
-
-    TclDateHaveDate = 0;
-    TclDateHaveDay = 0;
-    TclDateHaveOrdinalMonth = 0;
-    TclDateHaveRel = 0;
-    TclDateHaveTime = 0;
-    TclDateHaveZone = 0;
-
-    if (TclDateparse() || TclDateHaveTime > 1 || TclDateHaveZone > 1 || TclDateHaveDate > 1 ||
-	    TclDateHaveDay > 1 || TclDateHaveOrdinalMonth > 1) {
-        return -1;
+
+    yyInput = Tcl_GetString( objv[1] );
+    dateInfo.dateStart = yyInput;
+
+    yyHaveDate = 0;
+    if (Tcl_GetIntFromObj(interp, objv[2], &yr) != TCL_OK
+	    || Tcl_GetIntFromObj(interp, objv[3], &mo) != TCL_OK
+	    || Tcl_GetIntFromObj(interp, objv[4], &da) != TCL_OK) {
+	return TCL_ERROR;
     }
-    
-    if (TclDateHaveDate || TclDateHaveTime || TclDateHaveDay) {
-	if (TclDateYear < 0) {
-	    TclDateYear = -TclDateYear;
-	}
-	/*
-	 * The following line handles years that are specified using
-	 * only two digits.  The line of code below implements a policy
-	 * defined by the X/Open workgroup on the millinium rollover.
-	 * Note: some of those dates may not actually be valid on some
-	 * platforms.  The POSIX standard startes that the dates 70-99
-	 * shall refer to 1970-1999 and 00-38 shall refer to 2000-2038.
-	 * This later definition should work on all platforms.
-	 */
-
-	if (TclDateYear < 100) {
-	    if (TclDateYear >= 69) {
-		TclDateYear += 1900;
-	    } else {
-		TclDateYear += 2000;
-	    }
-	}
-	if (Convert(TclDateMonth, TclDateDay, TclDateYear, TclDateHour, TclDateMinutes, TclDateSeconds,
-		TclDateMeridian, TclDateDSTmode, &Start) < 0) {
-            return -1;
-	}
-    } else {
-        Start = (time_t) now;
-        if (!TclDateHaveRel) {
-            Start -= ((tm->tm_hour * 60L * 60L) +
-		    tm->tm_min * 60L) +	tm->tm_sec;
-	}
+    yyYear = yr; yyMonth = mo; yyDay = da;
+
+    yyHaveTime = 0;
+    yyHour = 0; yyMinutes = 0; yySeconds = 0; yyMeridian = MER24;
+
+    yyHaveZone = 0;
+    yyTimezone = 0; yyDSTmode = DSTmaybe;
+
+    yyHaveOrdinalMonth = 0;
+    yyMonthOrdinal = 0;
+
+    yyHaveDay = 0;
+    yyDayOrdinal = 0; yyDayNumber = 0;
+
+    yyHaveRel = 0;
+    yyRelMonth = 0; yyRelDay = 0; yyRelSeconds = 0; yyRelPointer = NULL;
+
+    dateInfo.messages = Tcl_NewObj();
+    dateInfo.separatrix = "";
+    Tcl_IncrRefCount(dateInfo.messages);
+
+    status = yyparse(&dateInfo);
+    if (status == 1) {
+	Tcl_SetObjResult(interp, dateInfo.messages);
+	Tcl_DecrRefCount(dateInfo.messages);
+	return TCL_ERROR;
+    } else if (status == 2) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("memory exhausted", -1));
+	Tcl_DecrRefCount(dateInfo.messages);
+	return TCL_ERROR;
+    } else if (status != 0) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("Unknown status returned "
+						  "from date parser. Please "
+						  "report this error as a "
+						  "bug in Tcl.", -1));
+	Tcl_DecrRefCount(dateInfo.messages);
+	return TCL_ERROR;
     }
+    Tcl_DecrRefCount(dateInfo.messages);
 
-    Start += TclDateRelSeconds;
-    if (RelativeMonth(Start, TclDateRelMonth, &Time) < 0) {
-        return -1;
+    if (yyHaveDate > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one date in string", -1));
+	return TCL_ERROR;
     }
-    Start += Time;
-
-    if (RelativeDay(Start, TclDateRelDay, &Time) < 0) {
-	return -1;
+    if (yyHaveTime > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one time of day in string", -1));
+	return TCL_ERROR;
     }
-    Start += Time;
-    
-    if (TclDateHaveDay && !TclDateHaveDate) {
-        tod = NamedDay(Start, TclDateDayOrdinal, TclDateDayNumber);
-        Start += tod;
+    if (yyHaveZone > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one time zone in string", -1));
+	return TCL_ERROR;
     }
-
-    if (TclDateHaveOrdinalMonth) {
-	tod = NamedMonth(Start, TclDateMonthOrdinal, TclDateMonth);
-	Start += tod;
+    if (yyHaveDay > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one weekday in string", -1));
+	return TCL_ERROR;
+    }
+    if (yyHaveOrdinalMonth > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one ordinal month in string", -1));
+	return TCL_ERROR;
     }
-    
-    *timePtr = Start;
-    return 0;
-}
-static CONST TclDatetabelem TclDateexca[] ={
--1, 1,
-	0, -1,
-	-2, 0,
-	};
-# define YYNPROD 56
-# define YYLAST 261
-static CONST TclDatetabelem TclDateact[]={
-
-    24,    40,    23,    36,    54,    81,    41,    28,    53,    26,
-    37,    42,    58,    38,    56,    28,    27,    26,    28,    33,
-    26,    32,    61,    50,    27,    80,    76,    27,    51,    75,
-    74,    73,    30,    72,    71,    70,    69,    52,    49,    48,
-    47,    45,    39,    62,    78,    46,    79,    68,    25,    65,
-    60,    67,    66,    55,    44,    21,    63,    11,    10,     9,
-     8,    35,     7,     6,     5,     4,     3,    43,     2,     1,
-    20,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,    57,     0,     0,    59,    77,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-     0,     0,     0,     0,     0,    19,    14,     0,     0,     0,
-    16,    28,    22,    26,     0,    12,    13,    17,     0,    15,
-    27,    18,    31,     0,     0,    29,     0,    34,    28,     0,
-    26,     0,     0,     0,     0,     0,     0,    27,     0,     0,
-     0,     0,     0,     0,     0,     0,     0,     0,     0,    64,
-    64 };
-static CONST TclDatetabelem TclDatepact[]={
-
--10000000,   -43,-10000000,-10000000,-10000000,-10000000,-10000000,-10000000,-10000000,-10000000,
--10000000,-10000000,   -26,  -268,-10000000,  -259,  -226,-10000000,  -257,    10,
-  -227,  -212,  -228,-10000000,-10000000,-10000000,-10000000,-10000000,-10000000,-10000000,
-  -229,-10000000,  -230,  -240,  -231,-10000000,-10000000,  -264,-10000000,     9,
--10000000,-10000000,  -249,-10000000,-10000000,  -246,-10000000,     4,    -2,     2,
-     7,     6,-10000000,-10000000,   -11,  -232,-10000000,-10000000,-10000000,-10000000,
-  -233,-10000000,  -234,  -235,-10000000,  -237,  -238,  -239,  -242,-10000000,
--10000000,-10000000,    -1,-10000000,-10000000,-10000000,   -12,-10000000,  -243,  -263,
--10000000,-10000000 };
-static CONST TclDatetabelem TclDatepgo[]={
-
-     0,    48,    70,    22,    69,    68,    66,    65,    64,    63,
-    62,    60,    59,    58,    57,    55 };
-static CONST TclDatetabelem TclDater1[]={
-
-     0,     4,     4,     5,     5,     5,     5,     5,     5,     5,
-     5,     5,     6,     6,     6,     6,     6,     7,     7,     7,
-    10,    10,    10,    10,    10,     8,     8,     8,     8,     8,
-     8,     8,     8,     8,     8,     9,     9,    12,    12,    12,
-    13,    11,    11,    15,    15,    15,    15,    15,     2,     2,
-     1,     1,     1,    14,     3,     3 };
-static CONST TclDatetabelem TclDater2[]={
-
-     0,     0,     4,     3,     3,     3,     3,     3,     3,     3,
-     3,     2,     5,     9,    11,    13,    15,     5,     3,     3,
-     3,     5,     5,     7,     5,     7,    11,     3,    11,    11,
-     5,     9,     5,     3,     7,     5,     7,     7,    15,     5,
-     9,     5,     2,     7,     5,     5,     7,     3,     3,     3,
-     3,     3,     3,     3,     1,     3 };
-static CONST TclDatetabelem TclDatechk[]={
-
--10000000,    -4,    -5,    -6,    -7,    -8,    -9,   -10,   -11,   -12,
-   -13,   -14,   268,   269,   259,   272,   263,   270,   274,   258,
-    -2,   -15,   265,    45,    43,    -1,   266,   273,   264,   261,
-    58,   258,    47,    45,   263,    -1,   271,   269,   272,   268,
-   258,   263,   268,    -1,    44,   268,   257,   268,   268,   268,
-   263,   268,   268,   272,   268,    44,   263,    -1,   258,    -1,
-    46,    -3,    45,    58,   261,    47,    45,    45,    58,   268,
-   268,   268,   268,   268,   268,   268,   268,    -3,    45,    58,
-   268,   268 };
-static CONST TclDatetabelem TclDatedef[]={
-
-     1,    -2,     2,     3,     4,     5,     6,     7,     8,     9,
-    10,    11,    53,    18,    19,    27,     0,    33,     0,    20,
-     0,    42,     0,    48,    49,    47,    50,    51,    52,    12,
-     0,    22,     0,     0,    32,    44,    17,     0,    39,    30,
-    24,    35,     0,    45,    21,     0,    41,     0,    54,    25,
-     0,     0,    34,    37,     0,     0,    36,    46,    23,    43,
-     0,    13,     0,     0,    55,     0,     0,     0,     0,    31,
-    40,    14,    54,    26,    28,    29,     0,    15,     0,     0,
-    16,    38 };
-typedef struct
-#ifdef __cplusplus
-	TclDatetoktype
-#endif
-{ char *t_name; int t_val; } TclDatetoktype;
-#ifndef YYDEBUG
-#	define YYDEBUG	0	/* don't allow debugging */
-#endif
-
-#if YYDEBUG
-
-TclDatetoktype TclDatetoks[] =
-{
-	"tAGO",	257,
-	"tDAY",	258,
-	"tDAYZONE",	259,
-	"tID",	260,
-	"tMERIDIAN",	261,
-	"tMINUTE_UNIT",	262,
-	"tMONTH",	263,
-	"tMONTH_UNIT",	264,
-	"tSTARDATE",	265,
-	"tSEC_UNIT",	266,
-	"tSNUMBER",	267,
-	"tUNUMBER",	268,
-	"tZONE",	269,
-	"tEPOCH",	270,
-	"tDST",	271,
-	"tISOBASE",	272,
-	"tDAY_UNIT",	273,
-	"tNEXT",	274,
-	"-unknown-",	-1	/* ends search */
-};
-
-char * TclDatereds[] =
-{
-	"-no such reduction-",
-	"spec : /* empty */",
-	"spec : spec item",
-	"item : time",
-	"item : zone",
-	"item : date",
-	"item : ordMonth",
-	"item : day",
-	"item : relspec",
-	"item : iso",
-	"item : trek",
-	"item : number",
-	"time : tUNUMBER tMERIDIAN",
-	"time : tUNUMBER ':' tUNUMBER o_merid",
-	"time : tUNUMBER ':' tUNUMBER '-' tUNUMBER",
-	"time : tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid",
-	"time : tUNUMBER ':' tUNUMBER ':' tUNUMBER '-' tUNUMBER",
-	"zone : tZONE tDST",
-	"zone : tZONE",
-	"zone : tDAYZONE",
-	"day : tDAY",
-	"day : tDAY ','",
-	"day : tUNUMBER tDAY",
-	"day : sign tUNUMBER tDAY",
-	"day : tNEXT tDAY",
-	"date : tUNUMBER '/' tUNUMBER",
-	"date : tUNUMBER '/' tUNUMBER '/' tUNUMBER",
-	"date : tISOBASE",
-	"date : tUNUMBER '-' tMONTH '-' tUNUMBER",
-	"date : tUNUMBER '-' tUNUMBER '-' tUNUMBER",
-	"date : tMONTH tUNUMBER",
-	"date : tMONTH tUNUMBER ',' tUNUMBER",
-	"date : tUNUMBER tMONTH",
-	"date : tEPOCH",
-	"date : tUNUMBER tMONTH tUNUMBER",
-	"ordMonth : tNEXT tMONTH",
-	"ordMonth : tNEXT tUNUMBER tMONTH",
-	"iso : tISOBASE tZONE tISOBASE",
-	"iso : tISOBASE tZONE tUNUMBER ':' tUNUMBER ':' tUNUMBER",
-	"iso : tISOBASE tISOBASE",
-	"trek : tSTARDATE tUNUMBER '.' tUNUMBER",
-	"relspec : relunits tAGO",
-	"relspec : relunits",
-	"relunits : sign tUNUMBER unit",
-	"relunits : tUNUMBER unit",
-	"relunits : tNEXT unit",
-	"relunits : tNEXT tUNUMBER unit",
-	"relunits : unit",
-	"sign : '-'",
-	"sign : '+'",
-	"unit : tSEC_UNIT",
-	"unit : tDAY_UNIT",
-	"unit : tMONTH_UNIT",
-	"number : tUNUMBER",
-	"o_merid : /* empty */",
-	"o_merid : tMERIDIAN",
-};
-#endif /* YYDEBUG */
-/*
- * Copyright (c) 1993 by Sun Microsystems, Inc.
- */
-
-
-/*
-** Skeleton parser driver for yacc output
-*/
-
-/*
-** yacc user known macros and defines
-*/
-#define YYERROR		goto TclDateerrlab
-#define YYACCEPT	return(0)
-#define YYABORT		return(1)
-#define YYBACKUP( newtoken, newvalue )\
-{\
-	if ( TclDatechar >= 0 || ( TclDater2[ TclDatetmp ] >> 1 ) != 1 )\
-	{\
-		TclDateerror( "syntax error - cannot backup" );\
-		goto TclDateerrlab;\
-	}\
-	TclDatechar = newtoken;\
-	TclDatestate = *TclDateps;\
-	TclDatelval = newvalue;\
-	goto TclDatenewstate;\
-}
-#define YYRECOVERING()	(!!TclDateerrflag)
-#define YYNEW(type)	malloc(sizeof(type) * TclDatenewmax)
-#define YYCOPY(to, from, type) \
-	(type *) memcpy(to, (char *) from, TclDatemaxdepth * sizeof (type))
-#define YYENLARGE( from, type) \
-	(type *) realloc((char *) from, TclDatenewmax * sizeof(type))
-#ifndef YYDEBUG
-#	define YYDEBUG	1	/* make debugging available */
-#endif
-
-/*
-** user known globals
-*/
-int TclDatedebug;			/* set to 1 to get debugging */
-
-/*
-** driver internal defines
-*/
-#define YYFLAG		(-10000000)
-
-/*
-** global variables used by the parser
-*/
-YYSTYPE *TclDatepv;			/* top of value stack */
-int *TclDateps;			/* top of state stack */
-
-int TclDatestate;			/* current state */
-int TclDatetmp;			/* extra var (lasts between blocks) */
 
-int TclDatenerrs;			/* number of errors */
-int TclDateerrflag;			/* error recovery flag */
-int TclDatechar;			/* current input token number */
+    result = Tcl_NewObj();
+    resultElement = Tcl_NewObj();
+    if (yyHaveDate) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyYear));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyMonth));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyDay));
+    }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
 
+    if (yyHaveTime) {
+	Tcl_ListObjAppendElement(interp, result, Tcl_NewIntObj((int)
+		ToSeconds(yyHour, yyMinutes, yySeconds, yyMeridian)));
+    } else {
+	Tcl_ListObjAppendElement(interp, result, Tcl_NewObj());
+    }
 
+    resultElement = Tcl_NewObj();
+    if (yyHaveZone) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) -yyTimezone));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj(1 - yyDSTmode));
+    }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
+
+    resultElement = Tcl_NewObj();
+    if (yyHaveRel) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyRelMonth));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyRelDay));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyRelSeconds));
+    }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
+
+    resultElement = Tcl_NewObj();
+    if (yyHaveDay && !yyHaveDate) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyDayOrdinal));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyDayNumber));
+    }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
+
+    resultElement = Tcl_NewObj();
+    if (yyHaveOrdinalMonth) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyMonthOrdinal));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyMonth));
+    }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
 
-#ifdef YYNMBCHARS
-#define YYLEX()		TclDatecvtok(TclDatelex())
-/*
-** TclDatecvtok - return a token if i is a wchar_t value that exceeds 255.
-**	If i<255, i itself is the token.  If i>255 but the neither 
-**	of the 30th or 31st bit is on, i is already a token.
-*/
-#if defined(__STDC__) || defined(__cplusplus)
-int TclDatecvtok(int i)
-#else
-int TclDatecvtok(i) int i;
-#endif
-{
-	int first = 0;
-	int last = YYNMBCHARS - 1;
-	int mid;
-	wchar_t j;
-
-	if(i&0x60000000){/*Must convert to a token. */
-		if( TclDatembchars[last].character < i ){
-			return i;/*Giving up*/
-		}
-		while ((last>=first)&&(first>=0)) {/*Binary search loop*/
-			mid = (first+last)/2;
-			j = TclDatembchars[mid].character;
-			if( j==i ){/*Found*/ 
-				return TclDatembchars[mid].tvalue;
-			}else if( j<i ){
-				first = mid + 1;
-			}else{
-				last = mid -1;
-			}
-		}
-		/*No entry in the table.*/
-		return i;/* Giving up.*/
-	}else{/* i is already a token. */
-		return i;
-	}
+    Tcl_SetObjResult(interp, result);
+    return TCL_OK;
 }
-#else/*!YYNMBCHARS*/
-#define YYLEX()		TclDatelex()
-#endif/*!YYNMBCHARS*/
-
+
 /*
-** TclDateparse - return 0 if worked, 1 if syntax error not recovered from
-*/
-#if defined(__STDC__) || defined(__cplusplus)
-int TclDateparse(void)
-#else
-int TclDateparse()
-#endif
-{
-	register YYSTYPE *TclDatepvt = 0;	/* top of value stack for $vars */
-
-#if defined(__cplusplus) || defined(lint)
-/*
-	hacks to please C++ and lint - goto's inside
-	switch should never be executed
-*/
-	static int __yaccpar_lint_hack__ = 0;
-	switch (__yaccpar_lint_hack__)
-	{
-		case 1: goto TclDateerrlab;
-		case 2: goto TclDatenewstate;
-	}
-#endif
-
-	/*
-	** Initialize externals - TclDateparse may be called more than once
-	*/
-	TclDatepv = &TclDatev[-1];
-	TclDateps = &TclDates[-1];
-	TclDatestate = 0;
-	TclDatetmp = 0;
-	TclDatenerrs = 0;
-	TclDateerrflag = 0;
-	TclDatechar = -1;
-
-#if YYMAXDEPTH <= 0
-	if (TclDatemaxdepth <= 0)
-	{
-		if ((TclDatemaxdepth = YYEXPAND(0)) <= 0)
-		{
-			TclDateerror("yacc initialization error");
-			YYABORT;
-		}
-	}
-#endif
-
-	{
-		register YYSTYPE *TclDate_pv;	/* top of value stack */
-		register int *TclDate_ps;		/* top of state stack */
-		register int TclDate_state;		/* current state */
-		register int  TclDate_n;		/* internal state number info */
-	goto TclDatestack;	/* moved from 6 lines above to here to please C++ */
-
-		/*
-		** get globals into registers.
-		** branch to here only if YYBACKUP was called.
-		*/
-		TclDate_pv = TclDatepv;
-		TclDate_ps = TclDateps;
-		TclDate_state = TclDatestate;
-		goto TclDate_newstate;
-
-		/*
-		** get globals into registers.
-		** either we just started, or we just finished a reduction
-		*/
-	TclDatestack:
-		TclDate_pv = TclDatepv;
-		TclDate_ps = TclDateps;
-		TclDate_state = TclDatestate;
-
-		/*
-		** top of for (;;) loop while no reductions done
-		*/
-	TclDate_stack:
-		/*
-		** put a state and value onto the stacks
-		*/
-#if YYDEBUG
-		/*
-		** if debugging, look up token value in list of value vs.
-		** name pairs.  0 and negative (-1) are special values.
-		** Note: linear search is used since time is not a real
-		** consideration while debugging.
-		*/
-		if ( TclDatedebug )
-		{
-			register int TclDate_i;
-
-			printf( "State %d, token ", TclDate_state );
-			if ( TclDatechar == 0 )
-				printf( "end-of-file\n" );
-			else if ( TclDatechar < 0 )
-				printf( "-none-\n" );
-			else
-			{
-				for ( TclDate_i = 0; TclDatetoks[TclDate_i].t_val >= 0;
-					TclDate_i++ )
-				{
-					if ( TclDatetoks[TclDate_i].t_val == TclDatechar )
-						break;
-				}
-				printf( "%s\n", TclDatetoks[TclDate_i].t_name );
-			}
-		}
-#endif /* YYDEBUG */
-		if ( ++TclDate_ps >= &TclDates[ TclDatemaxdepth ] )	/* room on stack? */
-		{
-			/*
-			** reallocate and recover.  Note that pointers
-			** have to be reset, or bad things will happen
-			*/
-			long TclDateps_index = (TclDate_ps - TclDates);
-			long TclDatepv_index = (TclDate_pv - TclDatev);
-			long TclDatepvt_index = (TclDatepvt - TclDatev);
-			int TclDatenewmax;
-#ifdef YYEXPAND
-			TclDatenewmax = YYEXPAND(TclDatemaxdepth);
-#else
-			TclDatenewmax = 2 * TclDatemaxdepth;	/* double table size */
-			if (TclDatemaxdepth == YYMAXDEPTH)	/* first time growth */
-			{
-				char *newTclDates = (char *)YYNEW(int);
-				char *newTclDatev = (char *)YYNEW(YYSTYPE);
-				if (newTclDates != 0 && newTclDatev != 0)
-				{
-					TclDates = YYCOPY(newTclDates, TclDates, int);
-					TclDatev = YYCOPY(newTclDatev, TclDatev, YYSTYPE);
-				}
-				else
-					TclDatenewmax = 0;	/* failed */
-			}
-			else				/* not first time */
-			{
-				TclDates = YYENLARGE(TclDates, int);
-				TclDatev = YYENLARGE(TclDatev, YYSTYPE);
-				if (TclDates == 0 || TclDatev == 0)
-					TclDatenewmax = 0;	/* failed */
-			}
-#endif
-			if (TclDatenewmax <= TclDatemaxdepth)	/* tables not expanded */
-			{
-				TclDateerror( "yacc stack overflow" );
-				YYABORT;
-			}
-			TclDatemaxdepth = TclDatenewmax;
-
-			TclDate_ps = TclDates + TclDateps_index;
-			TclDate_pv = TclDatev + TclDatepv_index;
-			TclDatepvt = TclDatev + TclDatepvt_index;
-		}
-		*TclDate_ps = TclDate_state;
-		*++TclDate_pv = TclDateval;
-
-		/*
-		** we have a new state - find out what to do
-		*/
-	TclDate_newstate:
-		if ( ( TclDate_n = TclDatepact[ TclDate_state ] ) <= YYFLAG )
-			goto TclDatedefault;		/* simple state */
-#if YYDEBUG
-		/*
-		** if debugging, need to mark whether new token grabbed
-		*/
-		TclDatetmp = TclDatechar < 0;
-#endif
-		if ( ( TclDatechar < 0 ) && ( ( TclDatechar = YYLEX() ) < 0 ) )
-			TclDatechar = 0;		/* reached EOF */
-#if YYDEBUG
-		if ( TclDatedebug && TclDatetmp )
-		{
-			register int TclDate_i;
-
-			printf( "Received token " );
-			if ( TclDatechar == 0 )
-				printf( "end-of-file\n" );
-			else if ( TclDatechar < 0 )
-				printf( "-none-\n" );
-			else
-			{
-				for ( TclDate_i = 0; TclDatetoks[TclDate_i].t_val >= 0;
-					TclDate_i++ )
-				{
-					if ( TclDatetoks[TclDate_i].t_val == TclDatechar )
-						break;
-				}
-				printf( "%s\n", TclDatetoks[TclDate_i].t_name );
-			}
-		}
-#endif /* YYDEBUG */
-		if ( ( ( TclDate_n += TclDatechar ) < 0 ) || ( TclDate_n >= YYLAST ) )
-			goto TclDatedefault;
-		if ( TclDatechk[ TclDate_n = TclDateact[ TclDate_n ] ] == TclDatechar )	/*valid shift*/
-		{
-			TclDatechar = -1;
-			TclDateval = TclDatelval;
-			TclDate_state = TclDate_n;
-			if ( TclDateerrflag > 0 )
-				TclDateerrflag--;
-			goto TclDate_stack;
-		}
-
-	TclDatedefault:
-		if ( ( TclDate_n = TclDatedef[ TclDate_state ] ) == -2 )
-		{
-#if YYDEBUG
-			TclDatetmp = TclDatechar < 0;
-#endif
-			if ( ( TclDatechar < 0 ) && ( ( TclDatechar = YYLEX() ) < 0 ) )
-				TclDatechar = 0;		/* reached EOF */
-#if YYDEBUG
-			if ( TclDatedebug && TclDatetmp )
-			{
-				register int TclDate_i;
-
-				printf( "Received token " );
-				if ( TclDatechar == 0 )
-					printf( "end-of-file\n" );
-				else if ( TclDatechar < 0 )
-					printf( "-none-\n" );
-				else
-				{
-					for ( TclDate_i = 0;
-						TclDatetoks[TclDate_i].t_val >= 0;
-						TclDate_i++ )
-					{
-						if ( TclDatetoks[TclDate_i].t_val
-							== TclDatechar )
-						{
-							break;
-						}
-					}
-					printf( "%s\n", TclDatetoks[TclDate_i].t_name );
-				}
-			}
-#endif /* YYDEBUG */
-			/*
-			** look through exception table
-			*/
-			{
-				register CONST int *TclDatexi = TclDateexca;
-
-				while ( ( *TclDatexi != -1 ) ||
-					( TclDatexi[1] != TclDate_state ) )
-				{
-					TclDatexi += 2;
-				}
-				while ( ( *(TclDatexi += 2) >= 0 ) &&
-					( *TclDatexi != TclDatechar ) )
-					;
-				if ( ( TclDate_n = TclDatexi[1] ) < 0 )
-					YYACCEPT;
-			}
-		}
-
-		/*
-		** check for syntax error
-		*/
-		if ( TclDate_n == 0 )	/* have an error */
-		{
-			/* no worry about speed here! */
-			switch ( TclDateerrflag )
-			{
-			case 0:		/* new error */
-				TclDateerror( "syntax error" );
-				goto skip_init;
-				/*
-				** get globals into registers.
-				** we have a user generated syntax type error
-				*/
-				TclDate_pv = TclDatepv;
-				TclDate_ps = TclDateps;
-				TclDate_state = TclDatestate;
-			skip_init:
-				TclDatenerrs++;
-				/* FALLTHRU */
-			case 1:
-			case 2:		/* incompletely recovered error */
-					/* try again... */
-				TclDateerrflag = 3;
-				/*
-				** find state where "error" is a legal
-				** shift action
-				*/
-				while ( TclDate_ps >= TclDates )
-				{
-					TclDate_n = TclDatepact[ *TclDate_ps ] + YYERRCODE;
-					if ( TclDate_n >= 0 && TclDate_n < YYLAST &&
-						TclDatechk[TclDateact[TclDate_n]] == YYERRCODE)					{
-						/*
-						** simulate shift of "error"
-						*/
-						TclDate_state = TclDateact[ TclDate_n ];
-						goto TclDate_stack;
-					}
-					/*
-					** current state has no shift on
-					** "error", pop stack
-					*/
-#if YYDEBUG
-#	define _POP_ "Error recovery pops state %d, uncovers state %d\n"
-					if ( TclDatedebug )
-						printf( _POP_, *TclDate_ps,
-							TclDate_ps[-1] );
-#	undef _POP_
-#endif
-					TclDate_ps--;
-					TclDate_pv--;
-				}
-				/*
-				** there is no state on stack with "error" as
-				** a valid shift.  give up.
-				*/
-				YYABORT;
-			case 3:		/* no shift yet; eat a token */
-#if YYDEBUG
-				/*
-				** if debugging, look up token in list of
-				** pairs.  0 and negative shouldn't occur,
-				** but since timing doesn't matter when
-				** debugging, it doesn't hurt to leave the
-				** tests here.
-				*/
-				if ( TclDatedebug )
-				{
-					register int TclDate_i;
-
-					printf( "Error recovery discards " );
-					if ( TclDatechar == 0 )
-						printf( "token end-of-file\n" );
-					else if ( TclDatechar < 0 )
-						printf( "token -none-\n" );
-					else
-					{
-						for ( TclDate_i = 0;
-							TclDatetoks[TclDate_i].t_val >= 0;
-							TclDate_i++ )
-						{
-							if ( TclDatetoks[TclDate_i].t_val
-								== TclDatechar )
-							{
-								break;
-							}
-						}
-						printf( "token %s\n",
-							TclDatetoks[TclDate_i].t_name );
-					}
-				}
-#endif /* YYDEBUG */
-				if ( TclDatechar == 0 )	/* reached EOF. quit */
-					YYABORT;
-				TclDatechar = -1;
-				goto TclDate_newstate;
-			}
-		}/* end if ( TclDate_n == 0 ) */
-		/*
-		** reduction by production TclDate_n
-		** put stack tops, etc. so things right after switch
-		*/
-#if YYDEBUG
-		/*
-		** if debugging, print the string that is the user's
-		** specification of the reduction which is just about
-		** to be done.
-		*/
-		if ( TclDatedebug )
-			printf( "Reduce by (%d) \"%s\"\n",
-				TclDate_n, TclDatereds[ TclDate_n ] );
-#endif
-		TclDatetmp = TclDate_n;			/* value to switch over */
-		TclDatepvt = TclDate_pv;			/* $vars top of value stack */
-		/*
-		** Look in goto table for next state
-		** Sorry about using TclDate_state here as temporary
-		** register variable, but why not, if it works...
-		** If TclDater2[ TclDate_n ] doesn't have the low order bit
-		** set, then there is no action to be done for
-		** this reduction.  So, no saving & unsaving of
-		** registers done.  The only difference between the
-		** code just after the if and the body of the if is
-		** the goto TclDate_stack in the body.  This way the test
-		** can be made before the choice of what to do is needed.
-		*/
-		{
-			/* length of production doubled with extra bit */
-			register int TclDate_len = TclDater2[ TclDate_n ];
-
-			if ( !( TclDate_len & 01 ) )
-			{
-				TclDate_len >>= 1;
-				TclDateval = ( TclDate_pv -= TclDate_len )[1];	/* $$ = $1 */
-				TclDate_state = TclDatepgo[ TclDate_n = TclDater1[ TclDate_n ] ] +
-					*( TclDate_ps -= TclDate_len ) + 1;
-				if ( TclDate_state >= YYLAST ||
-					TclDatechk[ TclDate_state =
-					TclDateact[ TclDate_state ] ] != -TclDate_n )
-				{
-					TclDate_state = TclDateact[ TclDatepgo[ TclDate_n ] ];
-				}
-				goto TclDate_stack;
-			}
-			TclDate_len >>= 1;
-			TclDateval = ( TclDate_pv -= TclDate_len )[1];	/* $$ = $1 */
-			TclDate_state = TclDatepgo[ TclDate_n = TclDater1[ TclDate_n ] ] +
-				*( TclDate_ps -= TclDate_len ) + 1;
-			if ( TclDate_state >= YYLAST ||
-				TclDatechk[ TclDate_state = TclDateact[ TclDate_state ] ] != -TclDate_n )
-			{
-				TclDate_state = TclDateact[ TclDatepgo[ TclDate_n ] ];
-			}
-		}
-					/* save until reenter driver code */
-		TclDatestate = TclDate_state;
-		TclDateps = TclDate_ps;
-		TclDatepv = TclDate_pv;
-	}
-	/*
-	** code supplied by user is placed in this switch
-	*/
-	switch( TclDatetmp )
-	{
-		
-case 3:{
-            TclDateHaveTime++;
-        } break;
-case 4:{
-            TclDateHaveZone++;
-        } break;
-case 5:{
-            TclDateHaveDate++;
-        } break;
-case 6:{
-            TclDateHaveOrdinalMonth++;
-        } break;
-case 7:{
-            TclDateHaveDay++;
-        } break;
-case 8:{
-            TclDateHaveRel++;
-        } break;
-case 9:{
-	    TclDateHaveTime++;
-	    TclDateHaveDate++;
-	} break;
-case 10:{
-	    TclDateHaveTime++;
-	    TclDateHaveDate++;
-	    TclDateHaveRel++;
-        } break;
-case 12:{
-            TclDateHour = TclDatepvt[-1].Number;
-            TclDateMinutes = 0;
-            TclDateSeconds = 0;
-            TclDateMeridian = TclDatepvt[-0].Meridian;
-        } break;
-case 13:{
-            TclDateHour = TclDatepvt[-3].Number;
-            TclDateMinutes = TclDatepvt[-1].Number;
-            TclDateSeconds = 0;
-            TclDateMeridian = TclDatepvt[-0].Meridian;
-        } break;
-case 14:{
-            TclDateHour = TclDatepvt[-4].Number;
-            TclDateMinutes = TclDatepvt[-2].Number;
-            TclDateMeridian = MER24;
-            TclDateDSTmode = DSToff;
-            TclDateTimezone = (TclDatepvt[-0].Number % 100 + (TclDatepvt[-0].Number / 100) * 60);
-        } break;
-case 15:{
-            TclDateHour = TclDatepvt[-5].Number;
-            TclDateMinutes = TclDatepvt[-3].Number;
-            TclDateSeconds = TclDatepvt[-1].Number;
-            TclDateMeridian = TclDatepvt[-0].Meridian;
-        } break;
-case 16:{
-            TclDateHour = TclDatepvt[-6].Number;
-            TclDateMinutes = TclDatepvt[-4].Number;
-            TclDateSeconds = TclDatepvt[-2].Number;
-            TclDateMeridian = MER24;
-            TclDateDSTmode = DSToff;
-            TclDateTimezone = (TclDatepvt[-0].Number % 100 + (TclDatepvt[-0].Number / 100) * 60);
-        } break;
-case 17:{
-            TclDateTimezone = TclDatepvt[-1].Number;
-            TclDateDSTmode = DSTon;
-        } break;
-case 18:{
-            TclDateTimezone = TclDatepvt[-0].Number;
-            TclDateDSTmode = DSToff;
-        } break;
-case 19:{
-            TclDateTimezone = TclDatepvt[-0].Number;
-            TclDateDSTmode = DSTon;
-        } break;
-case 20:{
-            TclDateDayOrdinal = 1;
-            TclDateDayNumber = TclDatepvt[-0].Number;
-        } break;
-case 21:{
-            TclDateDayOrdinal = 1;
-            TclDateDayNumber = TclDatepvt[-1].Number;
-        } break;
-case 22:{
-            TclDateDayOrdinal = TclDatepvt[-1].Number;
-            TclDateDayNumber = TclDatepvt[-0].Number;
-        } break;
-case 23:{
-            TclDateDayOrdinal = TclDatepvt[-2].Number * TclDatepvt[-1].Number;
-            TclDateDayNumber = TclDatepvt[-0].Number;
-        } break;
-case 24:{
-            TclDateDayOrdinal = 2;
-            TclDateDayNumber = TclDatepvt[-0].Number;
-        } break;
-case 25:{
-            TclDateMonth = TclDatepvt[-2].Number;
-            TclDateDay = TclDatepvt[-0].Number;
-        } break;
-case 26:{
-            TclDateMonth = TclDatepvt[-4].Number;
-            TclDateDay = TclDatepvt[-2].Number;
-            TclDateYear = TclDatepvt[-0].Number;
-        } break;
-case 27:{
-	    TclDateYear = TclDatepvt[-0].Number / 10000;
-	    TclDateMonth = (TclDatepvt[-0].Number % 10000)/100;
-	    TclDateDay = TclDatepvt[-0].Number % 100;
-	} break;
-case 28:{
-	    TclDateDay = TclDatepvt[-4].Number;
-	    TclDateMonth = TclDatepvt[-2].Number;
-	    TclDateYear = TclDatepvt[-0].Number;
-	} break;
-case 29:{
-            TclDateMonth = TclDatepvt[-2].Number;
-            TclDateDay = TclDatepvt[-0].Number;
-            TclDateYear = TclDatepvt[-4].Number;
-        } break;
-case 30:{
-            TclDateMonth = TclDatepvt[-1].Number;
-            TclDateDay = TclDatepvt[-0].Number;
-        } break;
-case 31:{
-            TclDateMonth = TclDatepvt[-3].Number;
-            TclDateDay = TclDatepvt[-2].Number;
-            TclDateYear = TclDatepvt[-0].Number;
-        } break;
-case 32:{
-            TclDateMonth = TclDatepvt[-0].Number;
-            TclDateDay = TclDatepvt[-1].Number;
-        } break;
-case 33:{
-	    TclDateMonth = 1;
-	    TclDateDay = 1;
-	    TclDateYear = EPOCH;
-	} break;
-case 34:{
-            TclDateMonth = TclDatepvt[-1].Number;
-            TclDateDay = TclDatepvt[-2].Number;
-            TclDateYear = TclDatepvt[-0].Number;
-        } break;
-case 35:{
-	    TclDateMonthOrdinal = 1;
-	    TclDateMonth = TclDatepvt[-0].Number;
-	} break;
-case 36:{
-	    TclDateMonthOrdinal = TclDatepvt[-1].Number;
-	    TclDateMonth = TclDatepvt[-0].Number;
-	} break;
-case 37:{
-            if (TclDatepvt[-1].Number != HOUR(- 7)) YYABORT;
-	    TclDateYear = TclDatepvt[-2].Number / 10000;
-	    TclDateMonth = (TclDatepvt[-2].Number % 10000)/100;
-	    TclDateDay = TclDatepvt[-2].Number % 100;
-	    TclDateHour = TclDatepvt[-0].Number / 10000;
-	    TclDateMinutes = (TclDatepvt[-0].Number % 10000)/100;
-	    TclDateSeconds = TclDatepvt[-0].Number % 100;
-        } break;
-case 38:{
-            if (TclDatepvt[-5].Number != HOUR(- 7)) YYABORT;
-	    TclDateYear = TclDatepvt[-6].Number / 10000;
-	    TclDateMonth = (TclDatepvt[-6].Number % 10000)/100;
-	    TclDateDay = TclDatepvt[-6].Number % 100;
-	    TclDateHour = TclDatepvt[-4].Number;
-	    TclDateMinutes = TclDatepvt[-2].Number;
-	    TclDateSeconds = TclDatepvt[-0].Number;
-        } break;
-case 39:{
-	    TclDateYear = TclDatepvt[-1].Number / 10000;
-	    TclDateMonth = (TclDatepvt[-1].Number % 10000)/100;
-	    TclDateDay = TclDatepvt[-1].Number % 100;
-	    TclDateHour = TclDatepvt[-0].Number / 10000;
-	    TclDateMinutes = (TclDatepvt[-0].Number % 10000)/100;
-	    TclDateSeconds = TclDatepvt[-0].Number % 100;
-        } break;
-case 40:{
-            /*
-	     * Offset computed year by -377 so that the returned years will
-	     * be in a range accessible with a 32 bit clock seconds value
-	     */
-            TclDateYear = TclDatepvt[-2].Number/1000 + 2323 - 377;
-            TclDateDay  = 1;
-	    TclDateMonth = 1;
-	    TclDateRelDay += ((TclDatepvt[-2].Number%1000)*(365 + IsLeapYear(TclDateYear)))/1000;
-	    TclDateRelSeconds += TclDatepvt[-0].Number * 144 * 60;
-        } break;
-case 41:{
-	    TclDateRelSeconds *= -1;
-	    TclDateRelMonth *= -1;
-	    TclDateRelDay *= -1;
-	} break;
-case 43:{ *TclDateRelPointer += TclDatepvt[-2].Number * TclDatepvt[-1].Number * TclDatepvt[-0].Number; } break;
-case 44:{ *TclDateRelPointer += TclDatepvt[-1].Number * TclDatepvt[-0].Number; } break;
-case 45:{ *TclDateRelPointer += TclDatepvt[-0].Number; } break;
-case 46:{ *TclDateRelPointer += TclDatepvt[-1].Number * TclDatepvt[-0].Number; } break;
-case 47:{ *TclDateRelPointer += TclDatepvt[-0].Number; } break;
-case 48:{ TclDateval.Number = -1; } break;
-case 49:{ TclDateval.Number =  1; } break;
-case 50:{ TclDateval.Number = TclDatepvt[-0].Number; TclDateRelPointer = &TclDateRelSeconds; } break;
-case 51:{ TclDateval.Number = TclDatepvt[-0].Number; TclDateRelPointer = &TclDateRelDay; } break;
-case 52:{ TclDateval.Number = TclDatepvt[-0].Number; TclDateRelPointer = &TclDateRelMonth; } break;
-case 53:{
-	if (TclDateHaveTime && TclDateHaveDate && !TclDateHaveRel) {
-	    TclDateYear = TclDatepvt[-0].Number;
-	} else {
-	    TclDateHaveTime++;
-	    if (TclDatepvt[-0].Number < 100) {
-		TclDateHour = TclDatepvt[-0].Number;
-		TclDateMinutes = 0;
-	    } else {
-		TclDateHour = TclDatepvt[-0].Number / 100;
-		TclDateMinutes = TclDatepvt[-0].Number % 100;
-	    }
-	    TclDateSeconds = 0;
-	    TclDateMeridian = MER24;
-	}
-    } break;
-case 54:{
-            TclDateval.Meridian = MER24;
-        } break;
-case 55:{
-            TclDateval.Meridian = TclDatepvt[-0].Meridian;
-        } break;
-	}
-	goto TclDatestack;		/* reset registers in driver code */
-}
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
 
diff --git a/generic/tclDecls.h b/generic/tclDecls.h
index 8d9f635..20ec35d 100644
--- a/generic/tclDecls.h
+++ b/generic/tclDecls.h
@@ -12,6 +12,17 @@
 #ifndef _TCLDECLS
 #define _TCLDECLS
 
+#undef TCL_STORAGE_CLASS
+#ifdef BUILD_tcl
+#   define TCL_STORAGE_CLASS DLLEXPORT
+#else
+#   ifdef USE_TCL_STUBS
+#      define TCL_STORAGE_CLASS
+#   else
+#      define TCL_STORAGE_CLASS DLLIMPORT
+#   endif
+#endif
+
 /*
  * WARNING: This file is automatically generated by the tools/genStubs.tcl
  * script.  Any modifications to the function declarations below should be made
@@ -24,1617 +35,3379 @@
  * Exported function declarations:
  */
 
+#ifndef Tcl_PkgProvideEx_TCL_DECLARED
+#define Tcl_PkgProvideEx_TCL_DECLARED
 /* 0 */
-EXTERN int		Tcl_PkgProvideEx _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_PkgProvideEx(Tcl_Interp *interp,
 				CONST char *name, CONST char *version,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_PkgRequireEx_TCL_DECLARED
+#define Tcl_PkgRequireEx_TCL_DECLARED
 /* 1 */
-EXTERN CONST84_RETURN char * Tcl_PkgRequireEx _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name,
-				CONST char *version, int exact,
-				ClientData *clientDataPtr));
+EXTERN CONST84_RETURN char * Tcl_PkgRequireEx(Tcl_Interp *interp,
+				CONST char *name, CONST char *version,
+				int exact, ClientData *clientDataPtr);
+#endif
+#ifndef Tcl_Panic_TCL_DECLARED
+#define Tcl_Panic_TCL_DECLARED
 /* 2 */
-EXTERN void		Tcl_Panic _ANSI_ARGS_(TCL_VARARGS(CONST char *,format));
+EXTERN void		Tcl_Panic(CONST char *format, ...);
+#endif
+#ifndef Tcl_Alloc_TCL_DECLARED
+#define Tcl_Alloc_TCL_DECLARED
 /* 3 */
-EXTERN char *		Tcl_Alloc _ANSI_ARGS_((unsigned int size));
+EXTERN char *		Tcl_Alloc(unsigned int size);
+#endif
+#ifndef Tcl_Free_TCL_DECLARED
+#define Tcl_Free_TCL_DECLARED
 /* 4 */
-EXTERN void		Tcl_Free _ANSI_ARGS_((char *ptr));
+EXTERN void		Tcl_Free(char *ptr);
+#endif
+#ifndef Tcl_Realloc_TCL_DECLARED
+#define Tcl_Realloc_TCL_DECLARED
 /* 5 */
-EXTERN char *		Tcl_Realloc _ANSI_ARGS_((char *ptr,
-				unsigned int size));
+EXTERN char *		Tcl_Realloc(char *ptr, unsigned int size);
+#endif
+#ifndef Tcl_DbCkalloc_TCL_DECLARED
+#define Tcl_DbCkalloc_TCL_DECLARED
 /* 6 */
-EXTERN char *		Tcl_DbCkalloc _ANSI_ARGS_((unsigned int size,
-				CONST char *file, int line));
+EXTERN char *		Tcl_DbCkalloc(unsigned int size, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_DbCkfree_TCL_DECLARED
+#define Tcl_DbCkfree_TCL_DECLARED
 /* 7 */
-EXTERN void		Tcl_DbCkfree _ANSI_ARGS_((char *ptr,
-				CONST char *file, int line));
+EXTERN void		Tcl_DbCkfree(char *ptr, CONST char *file, int line);
+#endif
+#ifndef Tcl_DbCkrealloc_TCL_DECLARED
+#define Tcl_DbCkrealloc_TCL_DECLARED
 /* 8 */
-EXTERN char *		Tcl_DbCkrealloc _ANSI_ARGS_((char *ptr,
-				unsigned int size, CONST char *file,
-				int line));
+EXTERN char *		Tcl_DbCkrealloc(char *ptr, unsigned int size,
+				CONST char *file, int line);
+#endif
 #if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
+#ifndef Tcl_CreateFileHandler_TCL_DECLARED
+#define Tcl_CreateFileHandler_TCL_DECLARED
 /* 9 */
-EXTERN void		Tcl_CreateFileHandler _ANSI_ARGS_((int fd, int mask,
-				Tcl_FileProc *proc, ClientData clientData));
+EXTERN void		Tcl_CreateFileHandler(int fd, int mask,
+				Tcl_FileProc *proc, ClientData clientData);
+#endif
 #endif /* UNIX */
 #ifdef MAC_OSX_TCL /* MACOSX */
+#ifndef Tcl_CreateFileHandler_TCL_DECLARED
+#define Tcl_CreateFileHandler_TCL_DECLARED
 /* 9 */
-EXTERN void		Tcl_CreateFileHandler _ANSI_ARGS_((int fd, int mask,
-				Tcl_FileProc *proc, ClientData clientData));
+EXTERN void		Tcl_CreateFileHandler(int fd, int mask,
+				Tcl_FileProc *proc, ClientData clientData);
+#endif
 #endif /* MACOSX */
 #if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
+#ifndef Tcl_DeleteFileHandler_TCL_DECLARED
+#define Tcl_DeleteFileHandler_TCL_DECLARED
 /* 10 */
-EXTERN void		Tcl_DeleteFileHandler _ANSI_ARGS_((int fd));
+EXTERN void		Tcl_DeleteFileHandler(int fd);
+#endif
 #endif /* UNIX */
 #ifdef MAC_OSX_TCL /* MACOSX */
+#ifndef Tcl_DeleteFileHandler_TCL_DECLARED
+#define Tcl_DeleteFileHandler_TCL_DECLARED
 /* 10 */
-EXTERN void		Tcl_DeleteFileHandler _ANSI_ARGS_((int fd));
+EXTERN void		Tcl_DeleteFileHandler(int fd);
+#endif
 #endif /* MACOSX */
+#ifndef Tcl_SetTimer_TCL_DECLARED
+#define Tcl_SetTimer_TCL_DECLARED
 /* 11 */
-EXTERN void		Tcl_SetTimer _ANSI_ARGS_((Tcl_Time *timePtr));
+EXTERN void		Tcl_SetTimer(Tcl_Time *timePtr);
+#endif
+#ifndef Tcl_Sleep_TCL_DECLARED
+#define Tcl_Sleep_TCL_DECLARED
 /* 12 */
-EXTERN void		Tcl_Sleep _ANSI_ARGS_((int ms));
+EXTERN void		Tcl_Sleep(int ms);
+#endif
+#ifndef Tcl_WaitForEvent_TCL_DECLARED
+#define Tcl_WaitForEvent_TCL_DECLARED
 /* 13 */
-EXTERN int		Tcl_WaitForEvent _ANSI_ARGS_((Tcl_Time *timePtr));
+EXTERN int		Tcl_WaitForEvent(Tcl_Time *timePtr);
+#endif
+#ifndef Tcl_AppendAllObjTypes_TCL_DECLARED
+#define Tcl_AppendAllObjTypes_TCL_DECLARED
 /* 14 */
-EXTERN int		Tcl_AppendAllObjTypes _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *objPtr));
+EXTERN int		Tcl_AppendAllObjTypes(Tcl_Interp *interp,
+				Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_AppendStringsToObj_TCL_DECLARED
+#define Tcl_AppendStringsToObj_TCL_DECLARED
 /* 15 */
-EXTERN void		Tcl_AppendStringsToObj _ANSI_ARGS_(TCL_VARARGS(Tcl_Obj *,objPtr));
+EXTERN void		Tcl_AppendStringsToObj(Tcl_Obj *objPtr, ...);
+#endif
+#ifndef Tcl_AppendToObj_TCL_DECLARED
+#define Tcl_AppendToObj_TCL_DECLARED
 /* 16 */
-EXTERN void		Tcl_AppendToObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST char *bytes, int length));
+EXTERN void		Tcl_AppendToObj(Tcl_Obj *objPtr, CONST char *bytes,
+				int length);
+#endif
+#ifndef Tcl_ConcatObj_TCL_DECLARED
+#define Tcl_ConcatObj_TCL_DECLARED
 /* 17 */
-EXTERN Tcl_Obj *	Tcl_ConcatObj _ANSI_ARGS_((int objc,
-				Tcl_Obj *CONST objv[]));
+EXTERN Tcl_Obj *	Tcl_ConcatObj(int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_ConvertToType_TCL_DECLARED
+#define Tcl_ConvertToType_TCL_DECLARED
 /* 18 */
-EXTERN int		Tcl_ConvertToType _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, Tcl_ObjType *typePtr));
+EXTERN int		Tcl_ConvertToType(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, Tcl_ObjType *typePtr);
+#endif
+#ifndef Tcl_DbDecrRefCount_TCL_DECLARED
+#define Tcl_DbDecrRefCount_TCL_DECLARED
 /* 19 */
-EXTERN void		Tcl_DbDecrRefCount _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST char *file, int line));
+EXTERN void		Tcl_DbDecrRefCount(Tcl_Obj *objPtr, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_DbIncrRefCount_TCL_DECLARED
+#define Tcl_DbIncrRefCount_TCL_DECLARED
 /* 20 */
-EXTERN void		Tcl_DbIncrRefCount _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST char *file, int line));
+EXTERN void		Tcl_DbIncrRefCount(Tcl_Obj *objPtr, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_DbIsShared_TCL_DECLARED
+#define Tcl_DbIsShared_TCL_DECLARED
 /* 21 */
-EXTERN int		Tcl_DbIsShared _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST char *file, int line));
+EXTERN int		Tcl_DbIsShared(Tcl_Obj *objPtr, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_DbNewBooleanObj_TCL_DECLARED
+#define Tcl_DbNewBooleanObj_TCL_DECLARED
 /* 22 */
-EXTERN Tcl_Obj *	Tcl_DbNewBooleanObj _ANSI_ARGS_((int boolValue,
-				CONST char *file, int line));
+EXTERN Tcl_Obj *	Tcl_DbNewBooleanObj(int boolValue, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_DbNewByteArrayObj_TCL_DECLARED
+#define Tcl_DbNewByteArrayObj_TCL_DECLARED
 /* 23 */
-EXTERN Tcl_Obj *	Tcl_DbNewByteArrayObj _ANSI_ARGS_((
-				CONST unsigned char *bytes, int length,
-				CONST char *file, int line));
+EXTERN Tcl_Obj *	Tcl_DbNewByteArrayObj(CONST unsigned char *bytes,
+				int length, CONST char *file, int line);
+#endif
+#ifndef Tcl_DbNewDoubleObj_TCL_DECLARED
+#define Tcl_DbNewDoubleObj_TCL_DECLARED
 /* 24 */
-EXTERN Tcl_Obj *	Tcl_DbNewDoubleObj _ANSI_ARGS_((double doubleValue,
-				CONST char *file, int line));
+EXTERN Tcl_Obj *	Tcl_DbNewDoubleObj(double doubleValue,
+				CONST char *file, int line);
+#endif
+#ifndef Tcl_DbNewListObj_TCL_DECLARED
+#define Tcl_DbNewListObj_TCL_DECLARED
 /* 25 */
-EXTERN Tcl_Obj *	Tcl_DbNewListObj _ANSI_ARGS_((int objc,
-				Tcl_Obj *CONST *objv, CONST char *file,
-				int line));
+EXTERN Tcl_Obj *	Tcl_DbNewListObj(int objc, Tcl_Obj *CONST *objv,
+				CONST char *file, int line);
+#endif
+#ifndef Tcl_DbNewLongObj_TCL_DECLARED
+#define Tcl_DbNewLongObj_TCL_DECLARED
 /* 26 */
-EXTERN Tcl_Obj *	Tcl_DbNewLongObj _ANSI_ARGS_((long longValue,
-				CONST char *file, int line));
+EXTERN Tcl_Obj *	Tcl_DbNewLongObj(long longValue, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_DbNewObj_TCL_DECLARED
+#define Tcl_DbNewObj_TCL_DECLARED
 /* 27 */
-EXTERN Tcl_Obj *	Tcl_DbNewObj _ANSI_ARGS_((CONST char *file, int line));
+EXTERN Tcl_Obj *	Tcl_DbNewObj(CONST char *file, int line);
+#endif
+#ifndef Tcl_DbNewStringObj_TCL_DECLARED
+#define Tcl_DbNewStringObj_TCL_DECLARED
 /* 28 */
-EXTERN Tcl_Obj *	Tcl_DbNewStringObj _ANSI_ARGS_((CONST char *bytes,
-				int length, CONST char *file, int line));
+EXTERN Tcl_Obj *	Tcl_DbNewStringObj(CONST char *bytes, int length,
+				CONST char *file, int line);
+#endif
+#ifndef Tcl_DuplicateObj_TCL_DECLARED
+#define Tcl_DuplicateObj_TCL_DECLARED
 /* 29 */
-EXTERN Tcl_Obj *	Tcl_DuplicateObj _ANSI_ARGS_((Tcl_Obj *objPtr));
+EXTERN Tcl_Obj *	Tcl_DuplicateObj(Tcl_Obj *objPtr);
+#endif
+#ifndef TclFreeObj_TCL_DECLARED
+#define TclFreeObj_TCL_DECLARED
 /* 30 */
-EXTERN void		TclFreeObj _ANSI_ARGS_((Tcl_Obj *objPtr));
+EXTERN void		TclFreeObj(Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetBoolean_TCL_DECLARED
+#define Tcl_GetBoolean_TCL_DECLARED
 /* 31 */
-EXTERN int		Tcl_GetBoolean _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *src, int *boolPtr));
+EXTERN int		Tcl_GetBoolean(Tcl_Interp *interp, CONST char *src,
+				int *boolPtr);
+#endif
+#ifndef Tcl_GetBooleanFromObj_TCL_DECLARED
+#define Tcl_GetBooleanFromObj_TCL_DECLARED
 /* 32 */
-EXTERN int		Tcl_GetBooleanFromObj _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *objPtr,
-				int *boolPtr));
+EXTERN int		Tcl_GetBooleanFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, int *boolPtr);
+#endif
+#ifndef Tcl_GetByteArrayFromObj_TCL_DECLARED
+#define Tcl_GetByteArrayFromObj_TCL_DECLARED
 /* 33 */
-EXTERN unsigned char *	Tcl_GetByteArrayFromObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int *lengthPtr));
+EXTERN unsigned char *	Tcl_GetByteArrayFromObj(Tcl_Obj *objPtr,
+				int *lengthPtr);
+#endif
+#ifndef Tcl_GetDouble_TCL_DECLARED
+#define Tcl_GetDouble_TCL_DECLARED
 /* 34 */
-EXTERN int		Tcl_GetDouble _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *src, double *doublePtr));
+EXTERN int		Tcl_GetDouble(Tcl_Interp *interp, CONST char *src,
+				double *doublePtr);
+#endif
+#ifndef Tcl_GetDoubleFromObj_TCL_DECLARED
+#define Tcl_GetDoubleFromObj_TCL_DECLARED
 /* 35 */
-EXTERN int		Tcl_GetDoubleFromObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, double *doublePtr));
+EXTERN int		Tcl_GetDoubleFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, double *doublePtr);
+#endif
+#ifndef Tcl_GetIndexFromObj_TCL_DECLARED
+#define Tcl_GetIndexFromObj_TCL_DECLARED
 /* 36 */
-EXTERN int		Tcl_GetIndexFromObj _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetIndexFromObj(Tcl_Interp *interp,
 				Tcl_Obj *objPtr, CONST84 char **tablePtr,
-				CONST char *msg, int flags, int *indexPtr));
+				CONST char *msg, int flags, int *indexPtr);
+#endif
+#ifndef Tcl_GetInt_TCL_DECLARED
+#define Tcl_GetInt_TCL_DECLARED
 /* 37 */
-EXTERN int		Tcl_GetInt _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *src, int *intPtr));
+EXTERN int		Tcl_GetInt(Tcl_Interp *interp, CONST char *src,
+				int *intPtr);
+#endif
+#ifndef Tcl_GetIntFromObj_TCL_DECLARED
+#define Tcl_GetIntFromObj_TCL_DECLARED
 /* 38 */
-EXTERN int		Tcl_GetIntFromObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, int *intPtr));
+EXTERN int		Tcl_GetIntFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, int *intPtr);
+#endif
+#ifndef Tcl_GetLongFromObj_TCL_DECLARED
+#define Tcl_GetLongFromObj_TCL_DECLARED
 /* 39 */
-EXTERN int		Tcl_GetLongFromObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, long *longPtr));
+EXTERN int		Tcl_GetLongFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, long *longPtr);
+#endif
+#ifndef Tcl_GetObjType_TCL_DECLARED
+#define Tcl_GetObjType_TCL_DECLARED
 /* 40 */
-EXTERN Tcl_ObjType *	Tcl_GetObjType _ANSI_ARGS_((CONST char *typeName));
+EXTERN Tcl_ObjType *	Tcl_GetObjType(CONST char *typeName);
+#endif
+#ifndef Tcl_GetStringFromObj_TCL_DECLARED
+#define Tcl_GetStringFromObj_TCL_DECLARED
 /* 41 */
-EXTERN char *		Tcl_GetStringFromObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int *lengthPtr));
+EXTERN char *		Tcl_GetStringFromObj(Tcl_Obj *objPtr, int *lengthPtr);
+#endif
+#ifndef Tcl_InvalidateStringRep_TCL_DECLARED
+#define Tcl_InvalidateStringRep_TCL_DECLARED
 /* 42 */
-EXTERN void		Tcl_InvalidateStringRep _ANSI_ARGS_((Tcl_Obj *objPtr));
+EXTERN void		Tcl_InvalidateStringRep(Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_ListObjAppendList_TCL_DECLARED
+#define Tcl_ListObjAppendList_TCL_DECLARED
 /* 43 */
-EXTERN int		Tcl_ListObjAppendList _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *listPtr,
-				Tcl_Obj *elemListPtr));
+EXTERN int		Tcl_ListObjAppendList(Tcl_Interp *interp,
+				Tcl_Obj *listPtr, Tcl_Obj *elemListPtr);
+#endif
+#ifndef Tcl_ListObjAppendElement_TCL_DECLARED
+#define Tcl_ListObjAppendElement_TCL_DECLARED
 /* 44 */
-EXTERN int		Tcl_ListObjAppendElement _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *listPtr,
-				Tcl_Obj *objPtr));
+EXTERN int		Tcl_ListObjAppendElement(Tcl_Interp *interp,
+				Tcl_Obj *listPtr, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_ListObjGetElements_TCL_DECLARED
+#define Tcl_ListObjGetElements_TCL_DECLARED
 /* 45 */
-EXTERN int		Tcl_ListObjGetElements _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *listPtr,
-				int *objcPtr, Tcl_Obj ***objvPtr));
+EXTERN int		Tcl_ListObjGetElements(Tcl_Interp *interp,
+				Tcl_Obj *listPtr, int *objcPtr,
+				Tcl_Obj ***objvPtr);
+#endif
+#ifndef Tcl_ListObjIndex_TCL_DECLARED
+#define Tcl_ListObjIndex_TCL_DECLARED
 /* 46 */
-EXTERN int		Tcl_ListObjIndex _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ListObjIndex(Tcl_Interp *interp,
 				Tcl_Obj *listPtr, int index,
-				Tcl_Obj **objPtrPtr));
+				Tcl_Obj **objPtrPtr);
+#endif
+#ifndef Tcl_ListObjLength_TCL_DECLARED
+#define Tcl_ListObjLength_TCL_DECLARED
 /* 47 */
-EXTERN int		Tcl_ListObjLength _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *listPtr, int *lengthPtr));
+EXTERN int		Tcl_ListObjLength(Tcl_Interp *interp,
+				Tcl_Obj *listPtr, int *lengthPtr);
+#endif
+#ifndef Tcl_ListObjReplace_TCL_DECLARED
+#define Tcl_ListObjReplace_TCL_DECLARED
 /* 48 */
-EXTERN int		Tcl_ListObjReplace _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ListObjReplace(Tcl_Interp *interp,
 				Tcl_Obj *listPtr, int first, int count,
-				int objc, Tcl_Obj *CONST objv[]));
+				int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_NewBooleanObj_TCL_DECLARED
+#define Tcl_NewBooleanObj_TCL_DECLARED
 /* 49 */
-EXTERN Tcl_Obj *	Tcl_NewBooleanObj _ANSI_ARGS_((int boolValue));
+EXTERN Tcl_Obj *	Tcl_NewBooleanObj(int boolValue);
+#endif
+#ifndef Tcl_NewByteArrayObj_TCL_DECLARED
+#define Tcl_NewByteArrayObj_TCL_DECLARED
 /* 50 */
-EXTERN Tcl_Obj *	Tcl_NewByteArrayObj _ANSI_ARGS_((
-				CONST unsigned char *bytes, int length));
+EXTERN Tcl_Obj *	Tcl_NewByteArrayObj(CONST unsigned char *bytes,
+				int length);
+#endif
+#ifndef Tcl_NewDoubleObj_TCL_DECLARED
+#define Tcl_NewDoubleObj_TCL_DECLARED
 /* 51 */
-EXTERN Tcl_Obj *	Tcl_NewDoubleObj _ANSI_ARGS_((double doubleValue));
+EXTERN Tcl_Obj *	Tcl_NewDoubleObj(double doubleValue);
+#endif
+#ifndef Tcl_NewIntObj_TCL_DECLARED
+#define Tcl_NewIntObj_TCL_DECLARED
 /* 52 */
-EXTERN Tcl_Obj *	Tcl_NewIntObj _ANSI_ARGS_((int intValue));
+EXTERN Tcl_Obj *	Tcl_NewIntObj(int intValue);
+#endif
+#ifndef Tcl_NewListObj_TCL_DECLARED
+#define Tcl_NewListObj_TCL_DECLARED
 /* 53 */
-EXTERN Tcl_Obj *	Tcl_NewListObj _ANSI_ARGS_((int objc,
-				Tcl_Obj *CONST objv[]));
+EXTERN Tcl_Obj *	Tcl_NewListObj(int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_NewLongObj_TCL_DECLARED
+#define Tcl_NewLongObj_TCL_DECLARED
 /* 54 */
-EXTERN Tcl_Obj *	Tcl_NewLongObj _ANSI_ARGS_((long longValue));
+EXTERN Tcl_Obj *	Tcl_NewLongObj(long longValue);
+#endif
+#ifndef Tcl_NewObj_TCL_DECLARED
+#define Tcl_NewObj_TCL_DECLARED
 /* 55 */
-EXTERN Tcl_Obj *	Tcl_NewObj _ANSI_ARGS_((void));
+EXTERN Tcl_Obj *	Tcl_NewObj(void);
+#endif
+#ifndef Tcl_NewStringObj_TCL_DECLARED
+#define Tcl_NewStringObj_TCL_DECLARED
 /* 56 */
-EXTERN Tcl_Obj *	Tcl_NewStringObj _ANSI_ARGS_((CONST char *bytes,
-				int length));
+EXTERN Tcl_Obj *	Tcl_NewStringObj(CONST char *bytes, int length);
+#endif
+#ifndef Tcl_SetBooleanObj_TCL_DECLARED
+#define Tcl_SetBooleanObj_TCL_DECLARED
 /* 57 */
-EXTERN void		Tcl_SetBooleanObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int boolValue));
+EXTERN void		Tcl_SetBooleanObj(Tcl_Obj *objPtr, int boolValue);
+#endif
+#ifndef Tcl_SetByteArrayLength_TCL_DECLARED
+#define Tcl_SetByteArrayLength_TCL_DECLARED
 /* 58 */
-EXTERN unsigned char *	Tcl_SetByteArrayLength _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int length));
+EXTERN unsigned char *	Tcl_SetByteArrayLength(Tcl_Obj *objPtr, int length);
+#endif
+#ifndef Tcl_SetByteArrayObj_TCL_DECLARED
+#define Tcl_SetByteArrayObj_TCL_DECLARED
 /* 59 */
-EXTERN void		Tcl_SetByteArrayObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST unsigned char *bytes, int length));
+EXTERN void		Tcl_SetByteArrayObj(Tcl_Obj *objPtr,
+				CONST unsigned char *bytes, int length);
+#endif
+#ifndef Tcl_SetDoubleObj_TCL_DECLARED
+#define Tcl_SetDoubleObj_TCL_DECLARED
 /* 60 */
-EXTERN void		Tcl_SetDoubleObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				double doubleValue));
+EXTERN void		Tcl_SetDoubleObj(Tcl_Obj *objPtr, double doubleValue);
+#endif
+#ifndef Tcl_SetIntObj_TCL_DECLARED
+#define Tcl_SetIntObj_TCL_DECLARED
 /* 61 */
-EXTERN void		Tcl_SetIntObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int intValue));
+EXTERN void		Tcl_SetIntObj(Tcl_Obj *objPtr, int intValue);
+#endif
+#ifndef Tcl_SetListObj_TCL_DECLARED
+#define Tcl_SetListObj_TCL_DECLARED
 /* 62 */
-EXTERN void		Tcl_SetListObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int objc, Tcl_Obj *CONST objv[]));
+EXTERN void		Tcl_SetListObj(Tcl_Obj *objPtr, int objc,
+				Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_SetLongObj_TCL_DECLARED
+#define Tcl_SetLongObj_TCL_DECLARED
 /* 63 */
-EXTERN void		Tcl_SetLongObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				long longValue));
+EXTERN void		Tcl_SetLongObj(Tcl_Obj *objPtr, long longValue);
+#endif
+#ifndef Tcl_SetObjLength_TCL_DECLARED
+#define Tcl_SetObjLength_TCL_DECLARED
 /* 64 */
-EXTERN void		Tcl_SetObjLength _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int length));
+EXTERN void		Tcl_SetObjLength(Tcl_Obj *objPtr, int length);
+#endif
+#ifndef Tcl_SetStringObj_TCL_DECLARED
+#define Tcl_SetStringObj_TCL_DECLARED
 /* 65 */
-EXTERN void		Tcl_SetStringObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST char *bytes, int length));
+EXTERN void		Tcl_SetStringObj(Tcl_Obj *objPtr, CONST char *bytes,
+				int length);
+#endif
+#ifndef Tcl_AddErrorInfo_TCL_DECLARED
+#define Tcl_AddErrorInfo_TCL_DECLARED
 /* 66 */
-EXTERN void		Tcl_AddErrorInfo _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *message));
+EXTERN void		Tcl_AddErrorInfo(Tcl_Interp *interp,
+				CONST char *message);
+#endif
+#ifndef Tcl_AddObjErrorInfo_TCL_DECLARED
+#define Tcl_AddObjErrorInfo_TCL_DECLARED
 /* 67 */
-EXTERN void		Tcl_AddObjErrorInfo _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *message, int length));
+EXTERN void		Tcl_AddObjErrorInfo(Tcl_Interp *interp,
+				CONST char *message, int length);
+#endif
+#ifndef Tcl_AllowExceptions_TCL_DECLARED
+#define Tcl_AllowExceptions_TCL_DECLARED
 /* 68 */
-EXTERN void		Tcl_AllowExceptions _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_AllowExceptions(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_AppendElement_TCL_DECLARED
+#define Tcl_AppendElement_TCL_DECLARED
 /* 69 */
-EXTERN void		Tcl_AppendElement _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *element));
+EXTERN void		Tcl_AppendElement(Tcl_Interp *interp,
+				CONST char *element);
+#endif
+#ifndef Tcl_AppendResult_TCL_DECLARED
+#define Tcl_AppendResult_TCL_DECLARED
 /* 70 */
-EXTERN void		Tcl_AppendResult _ANSI_ARGS_(TCL_VARARGS(Tcl_Interp *,interp));
+EXTERN void		Tcl_AppendResult(Tcl_Interp *interp, ...);
+#endif
+#ifndef Tcl_AsyncCreate_TCL_DECLARED
+#define Tcl_AsyncCreate_TCL_DECLARED
 /* 71 */
-EXTERN Tcl_AsyncHandler	 Tcl_AsyncCreate _ANSI_ARGS_((Tcl_AsyncProc *proc,
-				ClientData clientData));
+EXTERN Tcl_AsyncHandler	 Tcl_AsyncCreate(Tcl_AsyncProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_AsyncDelete_TCL_DECLARED
+#define Tcl_AsyncDelete_TCL_DECLARED
 /* 72 */
-EXTERN void		Tcl_AsyncDelete _ANSI_ARGS_((Tcl_AsyncHandler async));
+EXTERN void		Tcl_AsyncDelete(Tcl_AsyncHandler async);
+#endif
+#ifndef Tcl_AsyncInvoke_TCL_DECLARED
+#define Tcl_AsyncInvoke_TCL_DECLARED
 /* 73 */
-EXTERN int		Tcl_AsyncInvoke _ANSI_ARGS_((Tcl_Interp *interp,
-				int code));
+EXTERN int		Tcl_AsyncInvoke(Tcl_Interp *interp, int code);
+#endif
+#ifndef Tcl_AsyncMark_TCL_DECLARED
+#define Tcl_AsyncMark_TCL_DECLARED
 /* 74 */
-EXTERN void		Tcl_AsyncMark _ANSI_ARGS_((Tcl_AsyncHandler async));
+EXTERN void		Tcl_AsyncMark(Tcl_AsyncHandler async);
+#endif
+#ifndef Tcl_AsyncReady_TCL_DECLARED
+#define Tcl_AsyncReady_TCL_DECLARED
 /* 75 */
-EXTERN int		Tcl_AsyncReady _ANSI_ARGS_((void));
+EXTERN int		Tcl_AsyncReady(void);
+#endif
+#ifndef Tcl_BackgroundError_TCL_DECLARED
+#define Tcl_BackgroundError_TCL_DECLARED
 /* 76 */
-EXTERN void		Tcl_BackgroundError _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_BackgroundError(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_Backslash_TCL_DECLARED
+#define Tcl_Backslash_TCL_DECLARED
 /* 77 */
-EXTERN char		Tcl_Backslash _ANSI_ARGS_((CONST char *src,
-				int *readPtr));
+EXTERN char		Tcl_Backslash(CONST char *src, int *readPtr);
+#endif
+#ifndef Tcl_BadChannelOption_TCL_DECLARED
+#define Tcl_BadChannelOption_TCL_DECLARED
 /* 78 */
-EXTERN int		Tcl_BadChannelOption _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_BadChannelOption(Tcl_Interp *interp,
 				CONST char *optionName,
-				CONST char *optionList));
+				CONST char *optionList);
+#endif
+#ifndef Tcl_CallWhenDeleted_TCL_DECLARED
+#define Tcl_CallWhenDeleted_TCL_DECLARED
 /* 79 */
-EXTERN void		Tcl_CallWhenDeleted _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_CallWhenDeleted(Tcl_Interp *interp,
 				Tcl_InterpDeleteProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_CancelIdleCall_TCL_DECLARED
+#define Tcl_CancelIdleCall_TCL_DECLARED
 /* 80 */
-EXTERN void		Tcl_CancelIdleCall _ANSI_ARGS_((
-				Tcl_IdleProc *idleProc,
-				ClientData clientData));
+EXTERN void		Tcl_CancelIdleCall(Tcl_IdleProc *idleProc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_Close_TCL_DECLARED
+#define Tcl_Close_TCL_DECLARED
 /* 81 */
-EXTERN int		Tcl_Close _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
+EXTERN int		Tcl_Close(Tcl_Interp *interp, Tcl_Channel chan);
+#endif
+#ifndef Tcl_CommandComplete_TCL_DECLARED
+#define Tcl_CommandComplete_TCL_DECLARED
 /* 82 */
-EXTERN int		Tcl_CommandComplete _ANSI_ARGS_((CONST char *cmd));
+EXTERN int		Tcl_CommandComplete(CONST char *cmd);
+#endif
+#ifndef Tcl_Concat_TCL_DECLARED
+#define Tcl_Concat_TCL_DECLARED
 /* 83 */
-EXTERN char *		Tcl_Concat _ANSI_ARGS_((int argc,
-				CONST84 char *CONST *argv));
+EXTERN char *		Tcl_Concat(int argc, CONST84 char *CONST *argv);
+#endif
+#ifndef Tcl_ConvertElement_TCL_DECLARED
+#define Tcl_ConvertElement_TCL_DECLARED
 /* 84 */
-EXTERN int		Tcl_ConvertElement _ANSI_ARGS_((CONST char *src,
-				char *dst, int flags));
+EXTERN int		Tcl_ConvertElement(CONST char *src, char *dst,
+				int flags);
+#endif
+#ifndef Tcl_ConvertCountedElement_TCL_DECLARED
+#define Tcl_ConvertCountedElement_TCL_DECLARED
 /* 85 */
-EXTERN int		Tcl_ConvertCountedElement _ANSI_ARGS_((
-				CONST char *src, int length, char *dst,
-				int flags));
+EXTERN int		Tcl_ConvertCountedElement(CONST char *src,
+				int length, char *dst, int flags);
+#endif
+#ifndef Tcl_CreateAlias_TCL_DECLARED
+#define Tcl_CreateAlias_TCL_DECLARED
 /* 86 */
-EXTERN int		Tcl_CreateAlias _ANSI_ARGS_((Tcl_Interp *slave,
+EXTERN int		Tcl_CreateAlias(Tcl_Interp *slave,
 				CONST char *slaveCmd, Tcl_Interp *target,
 				CONST char *targetCmd, int argc,
-				CONST84 char *CONST *argv));
+				CONST84 char *CONST *argv);
+#endif
+#ifndef Tcl_CreateAliasObj_TCL_DECLARED
+#define Tcl_CreateAliasObj_TCL_DECLARED
 /* 87 */
-EXTERN int		Tcl_CreateAliasObj _ANSI_ARGS_((Tcl_Interp *slave,
+EXTERN int		Tcl_CreateAliasObj(Tcl_Interp *slave,
 				CONST char *slaveCmd, Tcl_Interp *target,
 				CONST char *targetCmd, int objc,
-				Tcl_Obj *CONST objv[]));
+				Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_CreateChannel_TCL_DECLARED
+#define Tcl_CreateChannel_TCL_DECLARED
 /* 88 */
-EXTERN Tcl_Channel	Tcl_CreateChannel _ANSI_ARGS_((
-				Tcl_ChannelType *typePtr,
+EXTERN Tcl_Channel	Tcl_CreateChannel(Tcl_ChannelType *typePtr,
 				CONST char *chanName,
-				ClientData instanceData, int mask));
+				ClientData instanceData, int mask);
+#endif
+#ifndef Tcl_CreateChannelHandler_TCL_DECLARED
+#define Tcl_CreateChannelHandler_TCL_DECLARED
 /* 89 */
-EXTERN void		Tcl_CreateChannelHandler _ANSI_ARGS_((
-				Tcl_Channel chan, int mask,
-				Tcl_ChannelProc *proc, ClientData clientData));
+EXTERN void		Tcl_CreateChannelHandler(Tcl_Channel chan, int mask,
+				Tcl_ChannelProc *proc, ClientData clientData);
+#endif
+#ifndef Tcl_CreateCloseHandler_TCL_DECLARED
+#define Tcl_CreateCloseHandler_TCL_DECLARED
 /* 90 */
-EXTERN void		Tcl_CreateCloseHandler _ANSI_ARGS_((Tcl_Channel chan,
-				Tcl_CloseProc *proc, ClientData clientData));
+EXTERN void		Tcl_CreateCloseHandler(Tcl_Channel chan,
+				Tcl_CloseProc *proc, ClientData clientData);
+#endif
+#ifndef Tcl_CreateCommand_TCL_DECLARED
+#define Tcl_CreateCommand_TCL_DECLARED
 /* 91 */
-EXTERN Tcl_Command	Tcl_CreateCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Command	Tcl_CreateCommand(Tcl_Interp *interp,
 				CONST char *cmdName, Tcl_CmdProc *proc,
 				ClientData clientData,
-				Tcl_CmdDeleteProc *deleteProc));
+				Tcl_CmdDeleteProc *deleteProc);
+#endif
+#ifndef Tcl_CreateEventSource_TCL_DECLARED
+#define Tcl_CreateEventSource_TCL_DECLARED
 /* 92 */
-EXTERN void		Tcl_CreateEventSource _ANSI_ARGS_((
-				Tcl_EventSetupProc *setupProc,
+EXTERN void		Tcl_CreateEventSource(Tcl_EventSetupProc *setupProc,
 				Tcl_EventCheckProc *checkProc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_CreateExitHandler_TCL_DECLARED
+#define Tcl_CreateExitHandler_TCL_DECLARED
 /* 93 */
-EXTERN void		Tcl_CreateExitHandler _ANSI_ARGS_((
-				Tcl_ExitProc *proc, ClientData clientData));
+EXTERN void		Tcl_CreateExitHandler(Tcl_ExitProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_CreateInterp_TCL_DECLARED
+#define Tcl_CreateInterp_TCL_DECLARED
 /* 94 */
-EXTERN Tcl_Interp *	Tcl_CreateInterp _ANSI_ARGS_((void));
+EXTERN Tcl_Interp *	Tcl_CreateInterp(void);
+#endif
+#ifndef Tcl_CreateMathFunc_TCL_DECLARED
+#define Tcl_CreateMathFunc_TCL_DECLARED
 /* 95 */
-EXTERN void		Tcl_CreateMathFunc _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_CreateMathFunc(Tcl_Interp *interp,
 				CONST char *name, int numArgs,
 				Tcl_ValueType *argTypes, Tcl_MathProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_CreateObjCommand_TCL_DECLARED
+#define Tcl_CreateObjCommand_TCL_DECLARED
 /* 96 */
-EXTERN Tcl_Command	Tcl_CreateObjCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Command	Tcl_CreateObjCommand(Tcl_Interp *interp,
 				CONST char *cmdName, Tcl_ObjCmdProc *proc,
 				ClientData clientData,
-				Tcl_CmdDeleteProc *deleteProc));
+				Tcl_CmdDeleteProc *deleteProc);
+#endif
+#ifndef Tcl_CreateSlave_TCL_DECLARED
+#define Tcl_CreateSlave_TCL_DECLARED
 /* 97 */
-EXTERN Tcl_Interp *	Tcl_CreateSlave _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *slaveName, int isSafe));
+EXTERN Tcl_Interp *	Tcl_CreateSlave(Tcl_Interp *interp,
+				CONST char *slaveName, int isSafe);
+#endif
+#ifndef Tcl_CreateTimerHandler_TCL_DECLARED
+#define Tcl_CreateTimerHandler_TCL_DECLARED
 /* 98 */
-EXTERN Tcl_TimerToken	Tcl_CreateTimerHandler _ANSI_ARGS_((int milliseconds,
-				Tcl_TimerProc *proc, ClientData clientData));
+EXTERN Tcl_TimerToken	Tcl_CreateTimerHandler(int milliseconds,
+				Tcl_TimerProc *proc, ClientData clientData);
+#endif
+#ifndef Tcl_CreateTrace_TCL_DECLARED
+#define Tcl_CreateTrace_TCL_DECLARED
 /* 99 */
-EXTERN Tcl_Trace	Tcl_CreateTrace _ANSI_ARGS_((Tcl_Interp *interp,
-				int level, Tcl_CmdTraceProc *proc,
-				ClientData clientData));
+EXTERN Tcl_Trace	Tcl_CreateTrace(Tcl_Interp *interp, int level,
+				Tcl_CmdTraceProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_DeleteAssocData_TCL_DECLARED
+#define Tcl_DeleteAssocData_TCL_DECLARED
 /* 100 */
-EXTERN void		Tcl_DeleteAssocData _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *name));
+EXTERN void		Tcl_DeleteAssocData(Tcl_Interp *interp,
+				CONST char *name);
+#endif
+#ifndef Tcl_DeleteChannelHandler_TCL_DECLARED
+#define Tcl_DeleteChannelHandler_TCL_DECLARED
 /* 101 */
-EXTERN void		Tcl_DeleteChannelHandler _ANSI_ARGS_((
-				Tcl_Channel chan, Tcl_ChannelProc *proc,
-				ClientData clientData));
+EXTERN void		Tcl_DeleteChannelHandler(Tcl_Channel chan,
+				Tcl_ChannelProc *proc, ClientData clientData);
+#endif
+#ifndef Tcl_DeleteCloseHandler_TCL_DECLARED
+#define Tcl_DeleteCloseHandler_TCL_DECLARED
 /* 102 */
-EXTERN void		Tcl_DeleteCloseHandler _ANSI_ARGS_((Tcl_Channel chan,
-				Tcl_CloseProc *proc, ClientData clientData));
+EXTERN void		Tcl_DeleteCloseHandler(Tcl_Channel chan,
+				Tcl_CloseProc *proc, ClientData clientData);
+#endif
+#ifndef Tcl_DeleteCommand_TCL_DECLARED
+#define Tcl_DeleteCommand_TCL_DECLARED
 /* 103 */
-EXTERN int		Tcl_DeleteCommand _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *cmdName));
+EXTERN int		Tcl_DeleteCommand(Tcl_Interp *interp,
+				CONST char *cmdName);
+#endif
+#ifndef Tcl_DeleteCommandFromToken_TCL_DECLARED
+#define Tcl_DeleteCommandFromToken_TCL_DECLARED
 /* 104 */
-EXTERN int		Tcl_DeleteCommandFromToken _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Command command));
+EXTERN int		Tcl_DeleteCommandFromToken(Tcl_Interp *interp,
+				Tcl_Command command);
+#endif
+#ifndef Tcl_DeleteEvents_TCL_DECLARED
+#define Tcl_DeleteEvents_TCL_DECLARED
 /* 105 */
-EXTERN void		Tcl_DeleteEvents _ANSI_ARGS_((
-				Tcl_EventDeleteProc *proc,
-				ClientData clientData));
+EXTERN void		Tcl_DeleteEvents(Tcl_EventDeleteProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_DeleteEventSource_TCL_DECLARED
+#define Tcl_DeleteEventSource_TCL_DECLARED
 /* 106 */
-EXTERN void		Tcl_DeleteEventSource _ANSI_ARGS_((
-				Tcl_EventSetupProc *setupProc,
+EXTERN void		Tcl_DeleteEventSource(Tcl_EventSetupProc *setupProc,
 				Tcl_EventCheckProc *checkProc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_DeleteExitHandler_TCL_DECLARED
+#define Tcl_DeleteExitHandler_TCL_DECLARED
 /* 107 */
-EXTERN void		Tcl_DeleteExitHandler _ANSI_ARGS_((
-				Tcl_ExitProc *proc, ClientData clientData));
+EXTERN void		Tcl_DeleteExitHandler(Tcl_ExitProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_DeleteHashEntry_TCL_DECLARED
+#define Tcl_DeleteHashEntry_TCL_DECLARED
 /* 108 */
-EXTERN void		Tcl_DeleteHashEntry _ANSI_ARGS_((
-				Tcl_HashEntry *entryPtr));
+EXTERN void		Tcl_DeleteHashEntry(Tcl_HashEntry *entryPtr);
+#endif
+#ifndef Tcl_DeleteHashTable_TCL_DECLARED
+#define Tcl_DeleteHashTable_TCL_DECLARED
 /* 109 */
-EXTERN void		Tcl_DeleteHashTable _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr));
+EXTERN void		Tcl_DeleteHashTable(Tcl_HashTable *tablePtr);
+#endif
+#ifndef Tcl_DeleteInterp_TCL_DECLARED
+#define Tcl_DeleteInterp_TCL_DECLARED
 /* 110 */
-EXTERN void		Tcl_DeleteInterp _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_DeleteInterp(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_DetachPids_TCL_DECLARED
+#define Tcl_DetachPids_TCL_DECLARED
 /* 111 */
-EXTERN void		Tcl_DetachPids _ANSI_ARGS_((int numPids,
-				Tcl_Pid *pidPtr));
+EXTERN void		Tcl_DetachPids(int numPids, Tcl_Pid *pidPtr);
+#endif
+#ifndef Tcl_DeleteTimerHandler_TCL_DECLARED
+#define Tcl_DeleteTimerHandler_TCL_DECLARED
 /* 112 */
-EXTERN void		Tcl_DeleteTimerHandler _ANSI_ARGS_((
-				Tcl_TimerToken token));
+EXTERN void		Tcl_DeleteTimerHandler(Tcl_TimerToken token);
+#endif
+#ifndef Tcl_DeleteTrace_TCL_DECLARED
+#define Tcl_DeleteTrace_TCL_DECLARED
 /* 113 */
-EXTERN void		Tcl_DeleteTrace _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Trace trace));
+EXTERN void		Tcl_DeleteTrace(Tcl_Interp *interp, Tcl_Trace trace);
+#endif
+#ifndef Tcl_DontCallWhenDeleted_TCL_DECLARED
+#define Tcl_DontCallWhenDeleted_TCL_DECLARED
 /* 114 */
-EXTERN void		Tcl_DontCallWhenDeleted _ANSI_ARGS_((
-				Tcl_Interp *interp,
+EXTERN void		Tcl_DontCallWhenDeleted(Tcl_Interp *interp,
 				Tcl_InterpDeleteProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_DoOneEvent_TCL_DECLARED
+#define Tcl_DoOneEvent_TCL_DECLARED
 /* 115 */
-EXTERN int		Tcl_DoOneEvent _ANSI_ARGS_((int flags));
+EXTERN int		Tcl_DoOneEvent(int flags);
+#endif
+#ifndef Tcl_DoWhenIdle_TCL_DECLARED
+#define Tcl_DoWhenIdle_TCL_DECLARED
 /* 116 */
-EXTERN void		Tcl_DoWhenIdle _ANSI_ARGS_((Tcl_IdleProc *proc,
-				ClientData clientData));
+EXTERN void		Tcl_DoWhenIdle(Tcl_IdleProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_DStringAppend_TCL_DECLARED
+#define Tcl_DStringAppend_TCL_DECLARED
 /* 117 */
-EXTERN char *		Tcl_DStringAppend _ANSI_ARGS_((Tcl_DString *dsPtr,
-				CONST char *bytes, int length));
+EXTERN char *		Tcl_DStringAppend(Tcl_DString *dsPtr,
+				CONST char *bytes, int length);
+#endif
+#ifndef Tcl_DStringAppendElement_TCL_DECLARED
+#define Tcl_DStringAppendElement_TCL_DECLARED
 /* 118 */
-EXTERN char *		Tcl_DStringAppendElement _ANSI_ARGS_((
-				Tcl_DString *dsPtr, CONST char *element));
+EXTERN char *		Tcl_DStringAppendElement(Tcl_DString *dsPtr,
+				CONST char *element);
+#endif
+#ifndef Tcl_DStringEndSublist_TCL_DECLARED
+#define Tcl_DStringEndSublist_TCL_DECLARED
 /* 119 */
-EXTERN void		Tcl_DStringEndSublist _ANSI_ARGS_((
-				Tcl_DString *dsPtr));
+EXTERN void		Tcl_DStringEndSublist(Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_DStringFree_TCL_DECLARED
+#define Tcl_DStringFree_TCL_DECLARED
 /* 120 */
-EXTERN void		Tcl_DStringFree _ANSI_ARGS_((Tcl_DString *dsPtr));
+EXTERN void		Tcl_DStringFree(Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_DStringGetResult_TCL_DECLARED
+#define Tcl_DStringGetResult_TCL_DECLARED
 /* 121 */
-EXTERN void		Tcl_DStringGetResult _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_DString *dsPtr));
+EXTERN void		Tcl_DStringGetResult(Tcl_Interp *interp,
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_DStringInit_TCL_DECLARED
+#define Tcl_DStringInit_TCL_DECLARED
 /* 122 */
-EXTERN void		Tcl_DStringInit _ANSI_ARGS_((Tcl_DString *dsPtr));
+EXTERN void		Tcl_DStringInit(Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_DStringResult_TCL_DECLARED
+#define Tcl_DStringResult_TCL_DECLARED
 /* 123 */
-EXTERN void		Tcl_DStringResult _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_DString *dsPtr));
+EXTERN void		Tcl_DStringResult(Tcl_Interp *interp,
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_DStringSetLength_TCL_DECLARED
+#define Tcl_DStringSetLength_TCL_DECLARED
 /* 124 */
-EXTERN void		Tcl_DStringSetLength _ANSI_ARGS_((Tcl_DString *dsPtr,
-				int length));
+EXTERN void		Tcl_DStringSetLength(Tcl_DString *dsPtr, int length);
+#endif
+#ifndef Tcl_DStringStartSublist_TCL_DECLARED
+#define Tcl_DStringStartSublist_TCL_DECLARED
 /* 125 */
-EXTERN void		Tcl_DStringStartSublist _ANSI_ARGS_((
-				Tcl_DString *dsPtr));
+EXTERN void		Tcl_DStringStartSublist(Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_Eof_TCL_DECLARED
+#define Tcl_Eof_TCL_DECLARED
 /* 126 */
-EXTERN int		Tcl_Eof _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_Eof(Tcl_Channel chan);
+#endif
+#ifndef Tcl_ErrnoId_TCL_DECLARED
+#define Tcl_ErrnoId_TCL_DECLARED
 /* 127 */
-EXTERN CONST84_RETURN char * Tcl_ErrnoId _ANSI_ARGS_((void));
+EXTERN CONST84_RETURN char * Tcl_ErrnoId(void);
+#endif
+#ifndef Tcl_ErrnoMsg_TCL_DECLARED
+#define Tcl_ErrnoMsg_TCL_DECLARED
 /* 128 */
-EXTERN CONST84_RETURN char * Tcl_ErrnoMsg _ANSI_ARGS_((int err));
+EXTERN CONST84_RETURN char * Tcl_ErrnoMsg(int err);
+#endif
+#ifndef Tcl_Eval_TCL_DECLARED
+#define Tcl_Eval_TCL_DECLARED
 /* 129 */
-EXTERN int		Tcl_Eval _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *script));
+EXTERN int		Tcl_Eval(Tcl_Interp *interp, CONST char *script);
+#endif
+#ifndef Tcl_EvalFile_TCL_DECLARED
+#define Tcl_EvalFile_TCL_DECLARED
 /* 130 */
-EXTERN int		Tcl_EvalFile _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *fileName));
+EXTERN int		Tcl_EvalFile(Tcl_Interp *interp,
+				CONST char *fileName);
+#endif
+#ifndef Tcl_EvalObj_TCL_DECLARED
+#define Tcl_EvalObj_TCL_DECLARED
 /* 131 */
-EXTERN int		Tcl_EvalObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr));
+EXTERN int		Tcl_EvalObj(Tcl_Interp *interp, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_EventuallyFree_TCL_DECLARED
+#define Tcl_EventuallyFree_TCL_DECLARED
 /* 132 */
-EXTERN void		Tcl_EventuallyFree _ANSI_ARGS_((
-				ClientData clientData,
-				Tcl_FreeProc *freeProc));
+EXTERN void		Tcl_EventuallyFree(ClientData clientData,
+				Tcl_FreeProc *freeProc);
+#endif
+#ifndef Tcl_Exit_TCL_DECLARED
+#define Tcl_Exit_TCL_DECLARED
 /* 133 */
-EXTERN void		Tcl_Exit _ANSI_ARGS_((int status));
+EXTERN void		Tcl_Exit(int status);
+#endif
+#ifndef Tcl_ExposeCommand_TCL_DECLARED
+#define Tcl_ExposeCommand_TCL_DECLARED
 /* 134 */
-EXTERN int		Tcl_ExposeCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ExposeCommand(Tcl_Interp *interp,
 				CONST char *hiddenCmdToken,
-				CONST char *cmdName));
+				CONST char *cmdName);
+#endif
+#ifndef Tcl_ExprBoolean_TCL_DECLARED
+#define Tcl_ExprBoolean_TCL_DECLARED
 /* 135 */
-EXTERN int		Tcl_ExprBoolean _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *expr, int *ptr));
+EXTERN int		Tcl_ExprBoolean(Tcl_Interp *interp, CONST char *expr,
+				int *ptr);
+#endif
+#ifndef Tcl_ExprBooleanObj_TCL_DECLARED
+#define Tcl_ExprBooleanObj_TCL_DECLARED
 /* 136 */
-EXTERN int		Tcl_ExprBooleanObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, int *ptr));
+EXTERN int		Tcl_ExprBooleanObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, int *ptr);
+#endif
+#ifndef Tcl_ExprDouble_TCL_DECLARED
+#define Tcl_ExprDouble_TCL_DECLARED
 /* 137 */
-EXTERN int		Tcl_ExprDouble _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *expr, double *ptr));
+EXTERN int		Tcl_ExprDouble(Tcl_Interp *interp, CONST char *expr,
+				double *ptr);
+#endif
+#ifndef Tcl_ExprDoubleObj_TCL_DECLARED
+#define Tcl_ExprDoubleObj_TCL_DECLARED
 /* 138 */
-EXTERN int		Tcl_ExprDoubleObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, double *ptr));
+EXTERN int		Tcl_ExprDoubleObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, double *ptr);
+#endif
+#ifndef Tcl_ExprLong_TCL_DECLARED
+#define Tcl_ExprLong_TCL_DECLARED
 /* 139 */
-EXTERN int		Tcl_ExprLong _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *expr, long *ptr));
+EXTERN int		Tcl_ExprLong(Tcl_Interp *interp, CONST char *expr,
+				long *ptr);
+#endif
+#ifndef Tcl_ExprLongObj_TCL_DECLARED
+#define Tcl_ExprLongObj_TCL_DECLARED
 /* 140 */
-EXTERN int		Tcl_ExprLongObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, long *ptr));
+EXTERN int		Tcl_ExprLongObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+				long *ptr);
+#endif
+#ifndef Tcl_ExprObj_TCL_DECLARED
+#define Tcl_ExprObj_TCL_DECLARED
 /* 141 */
-EXTERN int		Tcl_ExprObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, Tcl_Obj **resultPtrPtr));
+EXTERN int		Tcl_ExprObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+				Tcl_Obj **resultPtrPtr);
+#endif
+#ifndef Tcl_ExprString_TCL_DECLARED
+#define Tcl_ExprString_TCL_DECLARED
 /* 142 */
-EXTERN int		Tcl_ExprString _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *expr));
+EXTERN int		Tcl_ExprString(Tcl_Interp *interp, CONST char *expr);
+#endif
+#ifndef Tcl_Finalize_TCL_DECLARED
+#define Tcl_Finalize_TCL_DECLARED
 /* 143 */
-EXTERN void		Tcl_Finalize _ANSI_ARGS_((void));
+EXTERN void		Tcl_Finalize(void);
+#endif
+#ifndef Tcl_FindExecutable_TCL_DECLARED
+#define Tcl_FindExecutable_TCL_DECLARED
 /* 144 */
-EXTERN void		Tcl_FindExecutable _ANSI_ARGS_((CONST char *argv0));
+EXTERN void		Tcl_FindExecutable(CONST char *argv0);
+#endif
+#ifndef Tcl_FirstHashEntry_TCL_DECLARED
+#define Tcl_FirstHashEntry_TCL_DECLARED
 /* 145 */
-EXTERN Tcl_HashEntry *	Tcl_FirstHashEntry _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr,
-				Tcl_HashSearch *searchPtr));
+EXTERN Tcl_HashEntry *	Tcl_FirstHashEntry(Tcl_HashTable *tablePtr,
+				Tcl_HashSearch *searchPtr);
+#endif
+#ifndef Tcl_Flush_TCL_DECLARED
+#define Tcl_Flush_TCL_DECLARED
 /* 146 */
-EXTERN int		Tcl_Flush _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_Flush(Tcl_Channel chan);
+#endif
+#ifndef Tcl_FreeResult_TCL_DECLARED
+#define Tcl_FreeResult_TCL_DECLARED
 /* 147 */
-EXTERN void		Tcl_FreeResult _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_FreeResult(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetAlias_TCL_DECLARED
+#define Tcl_GetAlias_TCL_DECLARED
 /* 148 */
-EXTERN int		Tcl_GetAlias _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetAlias(Tcl_Interp *interp,
 				CONST char *slaveCmd,
 				Tcl_Interp **targetInterpPtr,
 				CONST84 char **targetCmdPtr, int *argcPtr,
-				CONST84 char ***argvPtr));
+				CONST84 char ***argvPtr);
+#endif
+#ifndef Tcl_GetAliasObj_TCL_DECLARED
+#define Tcl_GetAliasObj_TCL_DECLARED
 /* 149 */
-EXTERN int		Tcl_GetAliasObj _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetAliasObj(Tcl_Interp *interp,
 				CONST char *slaveCmd,
 				Tcl_Interp **targetInterpPtr,
 				CONST84 char **targetCmdPtr, int *objcPtr,
-				Tcl_Obj ***objv));
+				Tcl_Obj ***objv);
+#endif
+#ifndef Tcl_GetAssocData_TCL_DECLARED
+#define Tcl_GetAssocData_TCL_DECLARED
 /* 150 */
-EXTERN ClientData	Tcl_GetAssocData _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN ClientData	Tcl_GetAssocData(Tcl_Interp *interp,
 				CONST char *name,
-				Tcl_InterpDeleteProc **procPtr));
+				Tcl_InterpDeleteProc **procPtr);
+#endif
+#ifndef Tcl_GetChannel_TCL_DECLARED
+#define Tcl_GetChannel_TCL_DECLARED
 /* 151 */
-EXTERN Tcl_Channel	Tcl_GetChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *chanName, int *modePtr));
+EXTERN Tcl_Channel	Tcl_GetChannel(Tcl_Interp *interp,
+				CONST char *chanName, int *modePtr);
+#endif
+#ifndef Tcl_GetChannelBufferSize_TCL_DECLARED
+#define Tcl_GetChannelBufferSize_TCL_DECLARED
 /* 152 */
-EXTERN int		Tcl_GetChannelBufferSize _ANSI_ARGS_((
-				Tcl_Channel chan));
+EXTERN int		Tcl_GetChannelBufferSize(Tcl_Channel chan);
+#endif
+#ifndef Tcl_GetChannelHandle_TCL_DECLARED
+#define Tcl_GetChannelHandle_TCL_DECLARED
 /* 153 */
-EXTERN int		Tcl_GetChannelHandle _ANSI_ARGS_((Tcl_Channel chan,
-				int direction, ClientData *handlePtr));
+EXTERN int		Tcl_GetChannelHandle(Tcl_Channel chan, int direction,
+				ClientData *handlePtr);
+#endif
+#ifndef Tcl_GetChannelInstanceData_TCL_DECLARED
+#define Tcl_GetChannelInstanceData_TCL_DECLARED
 /* 154 */
-EXTERN ClientData	Tcl_GetChannelInstanceData _ANSI_ARGS_((
-				Tcl_Channel chan));
+EXTERN ClientData	Tcl_GetChannelInstanceData(Tcl_Channel chan);
+#endif
+#ifndef Tcl_GetChannelMode_TCL_DECLARED
+#define Tcl_GetChannelMode_TCL_DECLARED
 /* 155 */
-EXTERN int		Tcl_GetChannelMode _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_GetChannelMode(Tcl_Channel chan);
+#endif
+#ifndef Tcl_GetChannelName_TCL_DECLARED
+#define Tcl_GetChannelName_TCL_DECLARED
 /* 156 */
-EXTERN CONST84_RETURN char * Tcl_GetChannelName _ANSI_ARGS_((
-				Tcl_Channel chan));
+EXTERN CONST84_RETURN char * Tcl_GetChannelName(Tcl_Channel chan);
+#endif
+#ifndef Tcl_GetChannelOption_TCL_DECLARED
+#define Tcl_GetChannelOption_TCL_DECLARED
 /* 157 */
-EXTERN int		Tcl_GetChannelOption _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetChannelOption(Tcl_Interp *interp,
 				Tcl_Channel chan, CONST char *optionName,
-				Tcl_DString *dsPtr));
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_GetChannelType_TCL_DECLARED
+#define Tcl_GetChannelType_TCL_DECLARED
 /* 158 */
-EXTERN Tcl_ChannelType * Tcl_GetChannelType _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN Tcl_ChannelType * Tcl_GetChannelType(Tcl_Channel chan);
+#endif
+#ifndef Tcl_GetCommandInfo_TCL_DECLARED
+#define Tcl_GetCommandInfo_TCL_DECLARED
 /* 159 */
-EXTERN int		Tcl_GetCommandInfo _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *cmdName, Tcl_CmdInfo *infoPtr));
+EXTERN int		Tcl_GetCommandInfo(Tcl_Interp *interp,
+				CONST char *cmdName, Tcl_CmdInfo *infoPtr);
+#endif
+#ifndef Tcl_GetCommandName_TCL_DECLARED
+#define Tcl_GetCommandName_TCL_DECLARED
 /* 160 */
-EXTERN CONST84_RETURN char * Tcl_GetCommandName _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Command command));
+EXTERN CONST84_RETURN char * Tcl_GetCommandName(Tcl_Interp *interp,
+				Tcl_Command command);
+#endif
+#ifndef Tcl_GetErrno_TCL_DECLARED
+#define Tcl_GetErrno_TCL_DECLARED
 /* 161 */
-EXTERN int		Tcl_GetErrno _ANSI_ARGS_((void));
+EXTERN int		Tcl_GetErrno(void);
+#endif
+#ifndef Tcl_GetHostName_TCL_DECLARED
+#define Tcl_GetHostName_TCL_DECLARED
 /* 162 */
-EXTERN CONST84_RETURN char * Tcl_GetHostName _ANSI_ARGS_((void));
+EXTERN CONST84_RETURN char * Tcl_GetHostName(void);
+#endif
+#ifndef Tcl_GetInterpPath_TCL_DECLARED
+#define Tcl_GetInterpPath_TCL_DECLARED
 /* 163 */
-EXTERN int		Tcl_GetInterpPath _ANSI_ARGS_((Tcl_Interp *askInterp,
-				Tcl_Interp *slaveInterp));
+EXTERN int		Tcl_GetInterpPath(Tcl_Interp *askInterp,
+				Tcl_Interp *slaveInterp);
+#endif
+#ifndef Tcl_GetMaster_TCL_DECLARED
+#define Tcl_GetMaster_TCL_DECLARED
 /* 164 */
-EXTERN Tcl_Interp *	Tcl_GetMaster _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN Tcl_Interp *	Tcl_GetMaster(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetNameOfExecutable_TCL_DECLARED
+#define Tcl_GetNameOfExecutable_TCL_DECLARED
 /* 165 */
-EXTERN CONST char *	Tcl_GetNameOfExecutable _ANSI_ARGS_((void));
+EXTERN CONST char *	Tcl_GetNameOfExecutable(void);
+#endif
+#ifndef Tcl_GetObjResult_TCL_DECLARED
+#define Tcl_GetObjResult_TCL_DECLARED
 /* 166 */
-EXTERN Tcl_Obj *	Tcl_GetObjResult _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN Tcl_Obj *	Tcl_GetObjResult(Tcl_Interp *interp);
+#endif
 #if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
+#ifndef Tcl_GetOpenFile_TCL_DECLARED
+#define Tcl_GetOpenFile_TCL_DECLARED
 /* 167 */
-EXTERN int		Tcl_GetOpenFile _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetOpenFile(Tcl_Interp *interp,
 				CONST char *chanID, int forWriting,
-				int checkUsage, ClientData *filePtr));
+				int checkUsage, ClientData *filePtr);
+#endif
 #endif /* UNIX */
 #ifdef MAC_OSX_TCL /* MACOSX */
+#ifndef Tcl_GetOpenFile_TCL_DECLARED
+#define Tcl_GetOpenFile_TCL_DECLARED
 /* 167 */
-EXTERN int		Tcl_GetOpenFile _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetOpenFile(Tcl_Interp *interp,
 				CONST char *chanID, int forWriting,
-				int checkUsage, ClientData *filePtr));
+				int checkUsage, ClientData *filePtr);
+#endif
 #endif /* MACOSX */
+#ifndef Tcl_GetPathType_TCL_DECLARED
+#define Tcl_GetPathType_TCL_DECLARED
 /* 168 */
-EXTERN Tcl_PathType	Tcl_GetPathType _ANSI_ARGS_((CONST char *path));
+EXTERN Tcl_PathType	Tcl_GetPathType(CONST char *path);
+#endif
+#ifndef Tcl_Gets_TCL_DECLARED
+#define Tcl_Gets_TCL_DECLARED
 /* 169 */
-EXTERN int		Tcl_Gets _ANSI_ARGS_((Tcl_Channel chan,
-				Tcl_DString *dsPtr));
+EXTERN int		Tcl_Gets(Tcl_Channel chan, Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_GetsObj_TCL_DECLARED
+#define Tcl_GetsObj_TCL_DECLARED
 /* 170 */
-EXTERN int		Tcl_GetsObj _ANSI_ARGS_((Tcl_Channel chan,
-				Tcl_Obj *objPtr));
+EXTERN int		Tcl_GetsObj(Tcl_Channel chan, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetServiceMode_TCL_DECLARED
+#define Tcl_GetServiceMode_TCL_DECLARED
 /* 171 */
-EXTERN int		Tcl_GetServiceMode _ANSI_ARGS_((void));
+EXTERN int		Tcl_GetServiceMode(void);
+#endif
+#ifndef Tcl_GetSlave_TCL_DECLARED
+#define Tcl_GetSlave_TCL_DECLARED
 /* 172 */
-EXTERN Tcl_Interp *	Tcl_GetSlave _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *slaveName));
+EXTERN Tcl_Interp *	Tcl_GetSlave(Tcl_Interp *interp,
+				CONST char *slaveName);
+#endif
+#ifndef Tcl_GetStdChannel_TCL_DECLARED
+#define Tcl_GetStdChannel_TCL_DECLARED
 /* 173 */
-EXTERN Tcl_Channel	Tcl_GetStdChannel _ANSI_ARGS_((int type));
+EXTERN Tcl_Channel	Tcl_GetStdChannel(int type);
+#endif
+#ifndef Tcl_GetStringResult_TCL_DECLARED
+#define Tcl_GetStringResult_TCL_DECLARED
 /* 174 */
-EXTERN CONST84_RETURN char * Tcl_GetStringResult _ANSI_ARGS_((
-				Tcl_Interp *interp));
+EXTERN CONST84_RETURN char * Tcl_GetStringResult(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetVar_TCL_DECLARED
+#define Tcl_GetVar_TCL_DECLARED
 /* 175 */
-EXTERN CONST84_RETURN char * Tcl_GetVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName, int flags));
+EXTERN CONST84_RETURN char * Tcl_GetVar(Tcl_Interp *interp,
+				CONST char *varName, int flags);
+#endif
+#ifndef Tcl_GetVar2_TCL_DECLARED
+#define Tcl_GetVar2_TCL_DECLARED
 /* 176 */
-EXTERN CONST84_RETURN char * Tcl_GetVar2 _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN CONST84_RETURN char * Tcl_GetVar2(Tcl_Interp *interp,
 				CONST char *part1, CONST char *part2,
-				int flags));
+				int flags);
+#endif
+#ifndef Tcl_GlobalEval_TCL_DECLARED
+#define Tcl_GlobalEval_TCL_DECLARED
 /* 177 */
-EXTERN int		Tcl_GlobalEval _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *command));
+EXTERN int		Tcl_GlobalEval(Tcl_Interp *interp,
+				CONST char *command);
+#endif
+#ifndef Tcl_GlobalEvalObj_TCL_DECLARED
+#define Tcl_GlobalEvalObj_TCL_DECLARED
 /* 178 */
-EXTERN int		Tcl_GlobalEvalObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr));
+EXTERN int		Tcl_GlobalEvalObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_HideCommand_TCL_DECLARED
+#define Tcl_HideCommand_TCL_DECLARED
 /* 179 */
-EXTERN int		Tcl_HideCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_HideCommand(Tcl_Interp *interp,
 				CONST char *cmdName,
-				CONST char *hiddenCmdToken));
+				CONST char *hiddenCmdToken);
+#endif
+#ifndef Tcl_Init_TCL_DECLARED
+#define Tcl_Init_TCL_DECLARED
 /* 180 */
-EXTERN int		Tcl_Init _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN int		Tcl_Init(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_InitHashTable_TCL_DECLARED
+#define Tcl_InitHashTable_TCL_DECLARED
 /* 181 */
-EXTERN void		Tcl_InitHashTable _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr, int keyType));
+EXTERN void		Tcl_InitHashTable(Tcl_HashTable *tablePtr,
+				int keyType);
+#endif
+#ifndef Tcl_InputBlocked_TCL_DECLARED
+#define Tcl_InputBlocked_TCL_DECLARED
 /* 182 */
-EXTERN int		Tcl_InputBlocked _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_InputBlocked(Tcl_Channel chan);
+#endif
+#ifndef Tcl_InputBuffered_TCL_DECLARED
+#define Tcl_InputBuffered_TCL_DECLARED
 /* 183 */
-EXTERN int		Tcl_InputBuffered _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_InputBuffered(Tcl_Channel chan);
+#endif
+#ifndef Tcl_InterpDeleted_TCL_DECLARED
+#define Tcl_InterpDeleted_TCL_DECLARED
 /* 184 */
-EXTERN int		Tcl_InterpDeleted _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN int		Tcl_InterpDeleted(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_IsSafe_TCL_DECLARED
+#define Tcl_IsSafe_TCL_DECLARED
 /* 185 */
-EXTERN int		Tcl_IsSafe _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN int		Tcl_IsSafe(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_JoinPath_TCL_DECLARED
+#define Tcl_JoinPath_TCL_DECLARED
 /* 186 */
-EXTERN char *		Tcl_JoinPath _ANSI_ARGS_((int argc,
-				CONST84 char *CONST *argv,
-				Tcl_DString *resultPtr));
+EXTERN char *		Tcl_JoinPath(int argc, CONST84 char *CONST *argv,
+				Tcl_DString *resultPtr);
+#endif
+#ifndef Tcl_LinkVar_TCL_DECLARED
+#define Tcl_LinkVar_TCL_DECLARED
 /* 187 */
-EXTERN int		Tcl_LinkVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName, char *addr, int type));
+EXTERN int		Tcl_LinkVar(Tcl_Interp *interp, CONST char *varName,
+				char *addr, int type);
+#endif
 /* Slot 188 is reserved */
+#ifndef Tcl_MakeFileChannel_TCL_DECLARED
+#define Tcl_MakeFileChannel_TCL_DECLARED
 /* 189 */
-EXTERN Tcl_Channel	Tcl_MakeFileChannel _ANSI_ARGS_((ClientData handle,
-				int mode));
+EXTERN Tcl_Channel	Tcl_MakeFileChannel(ClientData handle, int mode);
+#endif
+#ifndef Tcl_MakeSafe_TCL_DECLARED
+#define Tcl_MakeSafe_TCL_DECLARED
 /* 190 */
-EXTERN int		Tcl_MakeSafe _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN int		Tcl_MakeSafe(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_MakeTcpClientChannel_TCL_DECLARED
+#define Tcl_MakeTcpClientChannel_TCL_DECLARED
 /* 191 */
-EXTERN Tcl_Channel	Tcl_MakeTcpClientChannel _ANSI_ARGS_((
-				ClientData tcpSocket));
+EXTERN Tcl_Channel	Tcl_MakeTcpClientChannel(ClientData tcpSocket);
+#endif
+#ifndef Tcl_Merge_TCL_DECLARED
+#define Tcl_Merge_TCL_DECLARED
 /* 192 */
-EXTERN char *		Tcl_Merge _ANSI_ARGS_((int argc,
-				CONST84 char *CONST *argv));
+EXTERN char *		Tcl_Merge(int argc, CONST84 char *CONST *argv);
+#endif
+#ifndef Tcl_NextHashEntry_TCL_DECLARED
+#define Tcl_NextHashEntry_TCL_DECLARED
 /* 193 */
-EXTERN Tcl_HashEntry *	Tcl_NextHashEntry _ANSI_ARGS_((
-				Tcl_HashSearch *searchPtr));
+EXTERN Tcl_HashEntry *	Tcl_NextHashEntry(Tcl_HashSearch *searchPtr);
+#endif
+#ifndef Tcl_NotifyChannel_TCL_DECLARED
+#define Tcl_NotifyChannel_TCL_DECLARED
 /* 194 */
-EXTERN void		Tcl_NotifyChannel _ANSI_ARGS_((Tcl_Channel channel,
-				int mask));
+EXTERN void		Tcl_NotifyChannel(Tcl_Channel channel, int mask);
+#endif
+#ifndef Tcl_ObjGetVar2_TCL_DECLARED
+#define Tcl_ObjGetVar2_TCL_DECLARED
 /* 195 */
-EXTERN Tcl_Obj *	Tcl_ObjGetVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr,
-				int flags));
+EXTERN Tcl_Obj *	Tcl_ObjGetVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+				Tcl_Obj *part2Ptr, int flags);
+#endif
+#ifndef Tcl_ObjSetVar2_TCL_DECLARED
+#define Tcl_ObjSetVar2_TCL_DECLARED
 /* 196 */
-EXTERN Tcl_Obj *	Tcl_ObjSetVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr,
-				Tcl_Obj *newValuePtr, int flags));
+EXTERN Tcl_Obj *	Tcl_ObjSetVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+				Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr,
+				int flags);
+#endif
+#ifndef Tcl_OpenCommandChannel_TCL_DECLARED
+#define Tcl_OpenCommandChannel_TCL_DECLARED
 /* 197 */
-EXTERN Tcl_Channel	Tcl_OpenCommandChannel _ANSI_ARGS_((
-				Tcl_Interp *interp, int argc,
-				CONST84 char **argv, int flags));
+EXTERN Tcl_Channel	Tcl_OpenCommandChannel(Tcl_Interp *interp, int argc,
+				CONST84 char **argv, int flags);
+#endif
+#ifndef Tcl_OpenFileChannel_TCL_DECLARED
+#define Tcl_OpenFileChannel_TCL_DECLARED
 /* 198 */
-EXTERN Tcl_Channel	Tcl_OpenFileChannel _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Channel	Tcl_OpenFileChannel(Tcl_Interp *interp,
 				CONST char *fileName, CONST char *modeString,
-				int permissions));
+				int permissions);
+#endif
+#ifndef Tcl_OpenTcpClient_TCL_DECLARED
+#define Tcl_OpenTcpClient_TCL_DECLARED
 /* 199 */
-EXTERN Tcl_Channel	Tcl_OpenTcpClient _ANSI_ARGS_((Tcl_Interp *interp,
-				int port, CONST char *address,
-				CONST char *myaddr, int myport, int async));
+EXTERN Tcl_Channel	Tcl_OpenTcpClient(Tcl_Interp *interp, int port,
+				CONST char *address, CONST char *myaddr,
+				int myport, int async);
+#endif
+#ifndef Tcl_OpenTcpServer_TCL_DECLARED
+#define Tcl_OpenTcpServer_TCL_DECLARED
 /* 200 */
-EXTERN Tcl_Channel	Tcl_OpenTcpServer _ANSI_ARGS_((Tcl_Interp *interp,
-				int port, CONST char *host,
+EXTERN Tcl_Channel	Tcl_OpenTcpServer(Tcl_Interp *interp, int port,
+				CONST char *host,
 				Tcl_TcpAcceptProc *acceptProc,
-				ClientData callbackData));
+				ClientData callbackData);
+#endif
+#ifndef Tcl_Preserve_TCL_DECLARED
+#define Tcl_Preserve_TCL_DECLARED
 /* 201 */
-EXTERN void		Tcl_Preserve _ANSI_ARGS_((ClientData data));
+EXTERN void		Tcl_Preserve(ClientData data);
+#endif
+#ifndef Tcl_PrintDouble_TCL_DECLARED
+#define Tcl_PrintDouble_TCL_DECLARED
 /* 202 */
-EXTERN void		Tcl_PrintDouble _ANSI_ARGS_((Tcl_Interp *interp,
-				double value, char *dst));
+EXTERN void		Tcl_PrintDouble(Tcl_Interp *interp, double value,
+				char *dst);
+#endif
+#ifndef Tcl_PutEnv_TCL_DECLARED
+#define Tcl_PutEnv_TCL_DECLARED
 /* 203 */
-EXTERN int		Tcl_PutEnv _ANSI_ARGS_((CONST char *assignment));
+EXTERN int		Tcl_PutEnv(CONST char *assignment);
+#endif
+#ifndef Tcl_PosixError_TCL_DECLARED
+#define Tcl_PosixError_TCL_DECLARED
 /* 204 */
-EXTERN CONST84_RETURN char * Tcl_PosixError _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN CONST84_RETURN char * Tcl_PosixError(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_QueueEvent_TCL_DECLARED
+#define Tcl_QueueEvent_TCL_DECLARED
 /* 205 */
-EXTERN void		Tcl_QueueEvent _ANSI_ARGS_((Tcl_Event *evPtr,
-				Tcl_QueuePosition position));
+EXTERN void		Tcl_QueueEvent(Tcl_Event *evPtr,
+				Tcl_QueuePosition position);
+#endif
+#ifndef Tcl_Read_TCL_DECLARED
+#define Tcl_Read_TCL_DECLARED
 /* 206 */
-EXTERN int		Tcl_Read _ANSI_ARGS_((Tcl_Channel chan, char *bufPtr,
-				int toRead));
+EXTERN int		Tcl_Read(Tcl_Channel chan, char *bufPtr, int toRead);
+#endif
+#ifndef Tcl_ReapDetachedProcs_TCL_DECLARED
+#define Tcl_ReapDetachedProcs_TCL_DECLARED
 /* 207 */
-EXTERN void		Tcl_ReapDetachedProcs _ANSI_ARGS_((void));
+EXTERN void		Tcl_ReapDetachedProcs(void);
+#endif
+#ifndef Tcl_RecordAndEval_TCL_DECLARED
+#define Tcl_RecordAndEval_TCL_DECLARED
 /* 208 */
-EXTERN int		Tcl_RecordAndEval _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *cmd, int flags));
+EXTERN int		Tcl_RecordAndEval(Tcl_Interp *interp,
+				CONST char *cmd, int flags);
+#endif
+#ifndef Tcl_RecordAndEvalObj_TCL_DECLARED
+#define Tcl_RecordAndEvalObj_TCL_DECLARED
 /* 209 */
-EXTERN int		Tcl_RecordAndEvalObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *cmdPtr, int flags));
+EXTERN int		Tcl_RecordAndEvalObj(Tcl_Interp *interp,
+				Tcl_Obj *cmdPtr, int flags);
+#endif
+#ifndef Tcl_RegisterChannel_TCL_DECLARED
+#define Tcl_RegisterChannel_TCL_DECLARED
 /* 210 */
-EXTERN void		Tcl_RegisterChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
+EXTERN void		Tcl_RegisterChannel(Tcl_Interp *interp,
+				Tcl_Channel chan);
+#endif
+#ifndef Tcl_RegisterObjType_TCL_DECLARED
+#define Tcl_RegisterObjType_TCL_DECLARED
 /* 211 */
-EXTERN void		Tcl_RegisterObjType _ANSI_ARGS_((
-				Tcl_ObjType *typePtr));
+EXTERN void		Tcl_RegisterObjType(Tcl_ObjType *typePtr);
+#endif
+#ifndef Tcl_RegExpCompile_TCL_DECLARED
+#define Tcl_RegExpCompile_TCL_DECLARED
 /* 212 */
-EXTERN Tcl_RegExp	Tcl_RegExpCompile _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *pattern));
+EXTERN Tcl_RegExp	Tcl_RegExpCompile(Tcl_Interp *interp,
+				CONST char *pattern);
+#endif
+#ifndef Tcl_RegExpExec_TCL_DECLARED
+#define Tcl_RegExpExec_TCL_DECLARED
 /* 213 */
-EXTERN int		Tcl_RegExpExec _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_RegExp regexp, CONST char *text,
-				CONST char *start));
+EXTERN int		Tcl_RegExpExec(Tcl_Interp *interp, Tcl_RegExp regexp,
+				CONST char *text, CONST char *start);
+#endif
+#ifndef Tcl_RegExpMatch_TCL_DECLARED
+#define Tcl_RegExpMatch_TCL_DECLARED
 /* 214 */
-EXTERN int		Tcl_RegExpMatch _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *text, CONST char *pattern));
+EXTERN int		Tcl_RegExpMatch(Tcl_Interp *interp, CONST char *text,
+				CONST char *pattern);
+#endif
+#ifndef Tcl_RegExpRange_TCL_DECLARED
+#define Tcl_RegExpRange_TCL_DECLARED
 /* 215 */
-EXTERN void		Tcl_RegExpRange _ANSI_ARGS_((Tcl_RegExp regexp,
-				int index, CONST84 char **startPtr,
-				CONST84 char **endPtr));
+EXTERN void		Tcl_RegExpRange(Tcl_RegExp regexp, int index,
+				CONST84 char **startPtr,
+				CONST84 char **endPtr);
+#endif
+#ifndef Tcl_Release_TCL_DECLARED
+#define Tcl_Release_TCL_DECLARED
 /* 216 */
-EXTERN void		Tcl_Release _ANSI_ARGS_((ClientData clientData));
+EXTERN void		Tcl_Release(ClientData clientData);
+#endif
+#ifndef Tcl_ResetResult_TCL_DECLARED
+#define Tcl_ResetResult_TCL_DECLARED
 /* 217 */
-EXTERN void		Tcl_ResetResult _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_ResetResult(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_ScanElement_TCL_DECLARED
+#define Tcl_ScanElement_TCL_DECLARED
 /* 218 */
-EXTERN int		Tcl_ScanElement _ANSI_ARGS_((CONST char *src,
-				int *flagPtr));
+EXTERN int		Tcl_ScanElement(CONST char *src, int *flagPtr);
+#endif
+#ifndef Tcl_ScanCountedElement_TCL_DECLARED
+#define Tcl_ScanCountedElement_TCL_DECLARED
 /* 219 */
-EXTERN int		Tcl_ScanCountedElement _ANSI_ARGS_((CONST char *src,
-				int length, int *flagPtr));
+EXTERN int		Tcl_ScanCountedElement(CONST char *src, int length,
+				int *flagPtr);
+#endif
+#ifndef Tcl_SeekOld_TCL_DECLARED
+#define Tcl_SeekOld_TCL_DECLARED
 /* 220 */
-EXTERN int		Tcl_SeekOld _ANSI_ARGS_((Tcl_Channel chan,
-				int offset, int mode));
+EXTERN int		Tcl_SeekOld(Tcl_Channel chan, int offset, int mode);
+#endif
+#ifndef Tcl_ServiceAll_TCL_DECLARED
+#define Tcl_ServiceAll_TCL_DECLARED
 /* 221 */
-EXTERN int		Tcl_ServiceAll _ANSI_ARGS_((void));
+EXTERN int		Tcl_ServiceAll(void);
+#endif
+#ifndef Tcl_ServiceEvent_TCL_DECLARED
+#define Tcl_ServiceEvent_TCL_DECLARED
 /* 222 */
-EXTERN int		Tcl_ServiceEvent _ANSI_ARGS_((int flags));
+EXTERN int		Tcl_ServiceEvent(int flags);
+#endif
+#ifndef Tcl_SetAssocData_TCL_DECLARED
+#define Tcl_SetAssocData_TCL_DECLARED
 /* 223 */
-EXTERN void		Tcl_SetAssocData _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_SetAssocData(Tcl_Interp *interp,
 				CONST char *name, Tcl_InterpDeleteProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_SetChannelBufferSize_TCL_DECLARED
+#define Tcl_SetChannelBufferSize_TCL_DECLARED
 /* 224 */
-EXTERN void		Tcl_SetChannelBufferSize _ANSI_ARGS_((
-				Tcl_Channel chan, int sz));
+EXTERN void		Tcl_SetChannelBufferSize(Tcl_Channel chan, int sz);
+#endif
+#ifndef Tcl_SetChannelOption_TCL_DECLARED
+#define Tcl_SetChannelOption_TCL_DECLARED
 /* 225 */
-EXTERN int		Tcl_SetChannelOption _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_SetChannelOption(Tcl_Interp *interp,
 				Tcl_Channel chan, CONST char *optionName,
-				CONST char *newValue));
+				CONST char *newValue);
+#endif
+#ifndef Tcl_SetCommandInfo_TCL_DECLARED
+#define Tcl_SetCommandInfo_TCL_DECLARED
 /* 226 */
-EXTERN int		Tcl_SetCommandInfo _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_SetCommandInfo(Tcl_Interp *interp,
 				CONST char *cmdName,
-				CONST Tcl_CmdInfo *infoPtr));
+				CONST Tcl_CmdInfo *infoPtr);
+#endif
+#ifndef Tcl_SetErrno_TCL_DECLARED
+#define Tcl_SetErrno_TCL_DECLARED
 /* 227 */
-EXTERN void		Tcl_SetErrno _ANSI_ARGS_((int err));
+EXTERN void		Tcl_SetErrno(int err);
+#endif
+#ifndef Tcl_SetErrorCode_TCL_DECLARED
+#define Tcl_SetErrorCode_TCL_DECLARED
 /* 228 */
-EXTERN void		Tcl_SetErrorCode _ANSI_ARGS_(TCL_VARARGS(Tcl_Interp *,interp));
+EXTERN void		Tcl_SetErrorCode(Tcl_Interp *interp, ...);
+#endif
+#ifndef Tcl_SetMaxBlockTime_TCL_DECLARED
+#define Tcl_SetMaxBlockTime_TCL_DECLARED
 /* 229 */
-EXTERN void		Tcl_SetMaxBlockTime _ANSI_ARGS_((Tcl_Time *timePtr));
+EXTERN void		Tcl_SetMaxBlockTime(Tcl_Time *timePtr);
+#endif
+#ifndef Tcl_SetPanicProc_TCL_DECLARED
+#define Tcl_SetPanicProc_TCL_DECLARED
 /* 230 */
-EXTERN void		Tcl_SetPanicProc _ANSI_ARGS_((
-				Tcl_PanicProc *panicProc));
+EXTERN void		Tcl_SetPanicProc(Tcl_PanicProc *panicProc);
+#endif
+#ifndef Tcl_SetRecursionLimit_TCL_DECLARED
+#define Tcl_SetRecursionLimit_TCL_DECLARED
 /* 231 */
-EXTERN int		Tcl_SetRecursionLimit _ANSI_ARGS_((
-				Tcl_Interp *interp, int depth));
+EXTERN int		Tcl_SetRecursionLimit(Tcl_Interp *interp, int depth);
+#endif
+#ifndef Tcl_SetResult_TCL_DECLARED
+#define Tcl_SetResult_TCL_DECLARED
 /* 232 */
-EXTERN void		Tcl_SetResult _ANSI_ARGS_((Tcl_Interp *interp,
-				char *result, Tcl_FreeProc *freeProc));
+EXTERN void		Tcl_SetResult(Tcl_Interp *interp, char *result,
+				Tcl_FreeProc *freeProc);
+#endif
+#ifndef Tcl_SetServiceMode_TCL_DECLARED
+#define Tcl_SetServiceMode_TCL_DECLARED
 /* 233 */
-EXTERN int		Tcl_SetServiceMode _ANSI_ARGS_((int mode));
+EXTERN int		Tcl_SetServiceMode(int mode);
+#endif
+#ifndef Tcl_SetObjErrorCode_TCL_DECLARED
+#define Tcl_SetObjErrorCode_TCL_DECLARED
 /* 234 */
-EXTERN void		Tcl_SetObjErrorCode _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *errorObjPtr));
+EXTERN void		Tcl_SetObjErrorCode(Tcl_Interp *interp,
+				Tcl_Obj *errorObjPtr);
+#endif
+#ifndef Tcl_SetObjResult_TCL_DECLARED
+#define Tcl_SetObjResult_TCL_DECLARED
 /* 235 */
-EXTERN void		Tcl_SetObjResult _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *resultObjPtr));
+EXTERN void		Tcl_SetObjResult(Tcl_Interp *interp,
+				Tcl_Obj *resultObjPtr);
+#endif
+#ifndef Tcl_SetStdChannel_TCL_DECLARED
+#define Tcl_SetStdChannel_TCL_DECLARED
 /* 236 */
-EXTERN void		Tcl_SetStdChannel _ANSI_ARGS_((Tcl_Channel channel,
-				int type));
+EXTERN void		Tcl_SetStdChannel(Tcl_Channel channel, int type);
+#endif
+#ifndef Tcl_SetVar_TCL_DECLARED
+#define Tcl_SetVar_TCL_DECLARED
 /* 237 */
-EXTERN CONST84_RETURN char * Tcl_SetVar _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN CONST84_RETURN char * Tcl_SetVar(Tcl_Interp *interp,
 				CONST char *varName, CONST char *newValue,
-				int flags));
+				int flags);
+#endif
+#ifndef Tcl_SetVar2_TCL_DECLARED
+#define Tcl_SetVar2_TCL_DECLARED
 /* 238 */
-EXTERN CONST84_RETURN char * Tcl_SetVar2 _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN CONST84_RETURN char * Tcl_SetVar2(Tcl_Interp *interp,
 				CONST char *part1, CONST char *part2,
-				CONST char *newValue, int flags));
+				CONST char *newValue, int flags);
+#endif
+#ifndef Tcl_SignalId_TCL_DECLARED
+#define Tcl_SignalId_TCL_DECLARED
 /* 239 */
-EXTERN CONST84_RETURN char * Tcl_SignalId _ANSI_ARGS_((int sig));
+EXTERN CONST84_RETURN char * Tcl_SignalId(int sig);
+#endif
+#ifndef Tcl_SignalMsg_TCL_DECLARED
+#define Tcl_SignalMsg_TCL_DECLARED
 /* 240 */
-EXTERN CONST84_RETURN char * Tcl_SignalMsg _ANSI_ARGS_((int sig));
+EXTERN CONST84_RETURN char * Tcl_SignalMsg(int sig);
+#endif
+#ifndef Tcl_SourceRCFile_TCL_DECLARED
+#define Tcl_SourceRCFile_TCL_DECLARED
 /* 241 */
-EXTERN void		Tcl_SourceRCFile _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_SourceRCFile(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_SplitList_TCL_DECLARED
+#define Tcl_SplitList_TCL_DECLARED
 /* 242 */
-EXTERN int		Tcl_SplitList _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_SplitList(Tcl_Interp *interp,
 				CONST char *listStr, int *argcPtr,
-				CONST84 char ***argvPtr));
+				CONST84 char ***argvPtr);
+#endif
+#ifndef Tcl_SplitPath_TCL_DECLARED
+#define Tcl_SplitPath_TCL_DECLARED
 /* 243 */
-EXTERN void		Tcl_SplitPath _ANSI_ARGS_((CONST char *path,
-				int *argcPtr, CONST84 char ***argvPtr));
+EXTERN void		Tcl_SplitPath(CONST char *path, int *argcPtr,
+				CONST84 char ***argvPtr);
+#endif
+#ifndef Tcl_StaticPackage_TCL_DECLARED
+#define Tcl_StaticPackage_TCL_DECLARED
 /* 244 */
-EXTERN void		Tcl_StaticPackage _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_StaticPackage(Tcl_Interp *interp,
 				CONST char *pkgName,
 				Tcl_PackageInitProc *initProc,
-				Tcl_PackageInitProc *safeInitProc));
+				Tcl_PackageInitProc *safeInitProc);
+#endif
+#ifndef Tcl_StringMatch_TCL_DECLARED
+#define Tcl_StringMatch_TCL_DECLARED
 /* 245 */
-EXTERN int		Tcl_StringMatch _ANSI_ARGS_((CONST char *str,
-				CONST char *pattern));
+EXTERN int		Tcl_StringMatch(CONST char *str, CONST char *pattern);
+#endif
+#ifndef Tcl_TellOld_TCL_DECLARED
+#define Tcl_TellOld_TCL_DECLARED
 /* 246 */
-EXTERN int		Tcl_TellOld _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_TellOld(Tcl_Channel chan);
+#endif
+#ifndef Tcl_TraceVar_TCL_DECLARED
+#define Tcl_TraceVar_TCL_DECLARED
 /* 247 */
-EXTERN int		Tcl_TraceVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName, int flags,
-				Tcl_VarTraceProc *proc,
-				ClientData clientData));
-/* 248 */
-EXTERN int		Tcl_TraceVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *part1, CONST char *part2,
+EXTERN int		Tcl_TraceVar(Tcl_Interp *interp, CONST char *varName,
 				int flags, Tcl_VarTraceProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_TraceVar2_TCL_DECLARED
+#define Tcl_TraceVar2_TCL_DECLARED
+/* 248 */
+EXTERN int		Tcl_TraceVar2(Tcl_Interp *interp, CONST char *part1,
+				CONST char *part2, int flags,
+				Tcl_VarTraceProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_TranslateFileName_TCL_DECLARED
+#define Tcl_TranslateFileName_TCL_DECLARED
 /* 249 */
-EXTERN char *		Tcl_TranslateFileName _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name,
-				Tcl_DString *bufferPtr));
+EXTERN char *		Tcl_TranslateFileName(Tcl_Interp *interp,
+				CONST char *name, Tcl_DString *bufferPtr);
+#endif
+#ifndef Tcl_Ungets_TCL_DECLARED
+#define Tcl_Ungets_TCL_DECLARED
 /* 250 */
-EXTERN int		Tcl_Ungets _ANSI_ARGS_((Tcl_Channel chan,
-				CONST char *str, int len, int atHead));
+EXTERN int		Tcl_Ungets(Tcl_Channel chan, CONST char *str,
+				int len, int atHead);
+#endif
+#ifndef Tcl_UnlinkVar_TCL_DECLARED
+#define Tcl_UnlinkVar_TCL_DECLARED
 /* 251 */
-EXTERN void		Tcl_UnlinkVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName));
+EXTERN void		Tcl_UnlinkVar(Tcl_Interp *interp,
+				CONST char *varName);
+#endif
+#ifndef Tcl_UnregisterChannel_TCL_DECLARED
+#define Tcl_UnregisterChannel_TCL_DECLARED
 /* 252 */
-EXTERN int		Tcl_UnregisterChannel _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Channel chan));
+EXTERN int		Tcl_UnregisterChannel(Tcl_Interp *interp,
+				Tcl_Channel chan);
+#endif
+#ifndef Tcl_UnsetVar_TCL_DECLARED
+#define Tcl_UnsetVar_TCL_DECLARED
 /* 253 */
-EXTERN int		Tcl_UnsetVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName, int flags));
+EXTERN int		Tcl_UnsetVar(Tcl_Interp *interp, CONST char *varName,
+				int flags);
+#endif
+#ifndef Tcl_UnsetVar2_TCL_DECLARED
+#define Tcl_UnsetVar2_TCL_DECLARED
 /* 254 */
-EXTERN int		Tcl_UnsetVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *part1, CONST char *part2,
-				int flags));
+EXTERN int		Tcl_UnsetVar2(Tcl_Interp *interp, CONST char *part1,
+				CONST char *part2, int flags);
+#endif
+#ifndef Tcl_UntraceVar_TCL_DECLARED
+#define Tcl_UntraceVar_TCL_DECLARED
 /* 255 */
-EXTERN void		Tcl_UntraceVar _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_UntraceVar(Tcl_Interp *interp,
 				CONST char *varName, int flags,
 				Tcl_VarTraceProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_UntraceVar2_TCL_DECLARED
+#define Tcl_UntraceVar2_TCL_DECLARED
 /* 256 */
-EXTERN void		Tcl_UntraceVar2 _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_UntraceVar2(Tcl_Interp *interp,
 				CONST char *part1, CONST char *part2,
 				int flags, Tcl_VarTraceProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_UpdateLinkedVar_TCL_DECLARED
+#define Tcl_UpdateLinkedVar_TCL_DECLARED
 /* 257 */
-EXTERN void		Tcl_UpdateLinkedVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName));
+EXTERN void		Tcl_UpdateLinkedVar(Tcl_Interp *interp,
+				CONST char *varName);
+#endif
+#ifndef Tcl_UpVar_TCL_DECLARED
+#define Tcl_UpVar_TCL_DECLARED
 /* 258 */
-EXTERN int		Tcl_UpVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *frameName, CONST char *varName,
-				CONST char *localName, int flags));
+EXTERN int		Tcl_UpVar(Tcl_Interp *interp, CONST char *frameName,
+				CONST char *varName, CONST char *localName,
+				int flags);
+#endif
+#ifndef Tcl_UpVar2_TCL_DECLARED
+#define Tcl_UpVar2_TCL_DECLARED
 /* 259 */
-EXTERN int		Tcl_UpVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *frameName, CONST char *part1,
-				CONST char *part2, CONST char *localName,
-				int flags));
+EXTERN int		Tcl_UpVar2(Tcl_Interp *interp, CONST char *frameName,
+				CONST char *part1, CONST char *part2,
+				CONST char *localName, int flags);
+#endif
+#ifndef Tcl_VarEval_TCL_DECLARED
+#define Tcl_VarEval_TCL_DECLARED
 /* 260 */
-EXTERN int		Tcl_VarEval _ANSI_ARGS_(TCL_VARARGS(Tcl_Interp *,interp));
+EXTERN int		Tcl_VarEval(Tcl_Interp *interp, ...);
+#endif
+#ifndef Tcl_VarTraceInfo_TCL_DECLARED
+#define Tcl_VarTraceInfo_TCL_DECLARED
 /* 261 */
-EXTERN ClientData	Tcl_VarTraceInfo _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN ClientData	Tcl_VarTraceInfo(Tcl_Interp *interp,
 				CONST char *varName, int flags,
 				Tcl_VarTraceProc *procPtr,
-				ClientData prevClientData));
+				ClientData prevClientData);
+#endif
+#ifndef Tcl_VarTraceInfo2_TCL_DECLARED
+#define Tcl_VarTraceInfo2_TCL_DECLARED
 /* 262 */
-EXTERN ClientData	Tcl_VarTraceInfo2 _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN ClientData	Tcl_VarTraceInfo2(Tcl_Interp *interp,
 				CONST char *part1, CONST char *part2,
 				int flags, Tcl_VarTraceProc *procPtr,
-				ClientData prevClientData));
+				ClientData prevClientData);
+#endif
+#ifndef Tcl_Write_TCL_DECLARED
+#define Tcl_Write_TCL_DECLARED
 /* 263 */
-EXTERN int		Tcl_Write _ANSI_ARGS_((Tcl_Channel chan,
-				CONST char *s, int slen));
+EXTERN int		Tcl_Write(Tcl_Channel chan, CONST char *s, int slen);
+#endif
+#ifndef Tcl_WrongNumArgs_TCL_DECLARED
+#define Tcl_WrongNumArgs_TCL_DECLARED
 /* 264 */
-EXTERN void		Tcl_WrongNumArgs _ANSI_ARGS_((Tcl_Interp *interp,
-				int objc, Tcl_Obj *CONST objv[],
-				CONST char *message));
+EXTERN void		Tcl_WrongNumArgs(Tcl_Interp *interp, int objc,
+				Tcl_Obj *CONST objv[], CONST char *message);
+#endif
+#ifndef Tcl_DumpActiveMemory_TCL_DECLARED
+#define Tcl_DumpActiveMemory_TCL_DECLARED
 /* 265 */
-EXTERN int		Tcl_DumpActiveMemory _ANSI_ARGS_((
-				CONST char *fileName));
+EXTERN int		Tcl_DumpActiveMemory(CONST char *fileName);
+#endif
+#ifndef Tcl_ValidateAllMemory_TCL_DECLARED
+#define Tcl_ValidateAllMemory_TCL_DECLARED
 /* 266 */
-EXTERN void		Tcl_ValidateAllMemory _ANSI_ARGS_((CONST char *file,
-				int line));
+EXTERN void		Tcl_ValidateAllMemory(CONST char *file, int line);
+#endif
+#ifndef Tcl_AppendResultVA_TCL_DECLARED
+#define Tcl_AppendResultVA_TCL_DECLARED
 /* 267 */
-EXTERN void		Tcl_AppendResultVA _ANSI_ARGS_((Tcl_Interp *interp,
-				va_list argList));
+EXTERN void		Tcl_AppendResultVA(Tcl_Interp *interp,
+				va_list argList);
+#endif
+#ifndef Tcl_AppendStringsToObjVA_TCL_DECLARED
+#define Tcl_AppendStringsToObjVA_TCL_DECLARED
 /* 268 */
-EXTERN void		Tcl_AppendStringsToObjVA _ANSI_ARGS_((
-				Tcl_Obj *objPtr, va_list argList));
+EXTERN void		Tcl_AppendStringsToObjVA(Tcl_Obj *objPtr,
+				va_list argList);
+#endif
+#ifndef Tcl_HashStats_TCL_DECLARED
+#define Tcl_HashStats_TCL_DECLARED
 /* 269 */
-EXTERN char *		Tcl_HashStats _ANSI_ARGS_((Tcl_HashTable *tablePtr));
+EXTERN char *		Tcl_HashStats(Tcl_HashTable *tablePtr);
+#endif
+#ifndef Tcl_ParseVar_TCL_DECLARED
+#define Tcl_ParseVar_TCL_DECLARED
 /* 270 */
-EXTERN CONST84_RETURN char * Tcl_ParseVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *start, CONST84 char **termPtr));
+EXTERN CONST84_RETURN char * Tcl_ParseVar(Tcl_Interp *interp,
+				CONST char *start, CONST84 char **termPtr);
+#endif
+#ifndef Tcl_PkgPresent_TCL_DECLARED
+#define Tcl_PkgPresent_TCL_DECLARED
 /* 271 */
-EXTERN CONST84_RETURN char * Tcl_PkgPresent _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN CONST84_RETURN char * Tcl_PkgPresent(Tcl_Interp *interp,
 				CONST char *name, CONST char *version,
-				int exact));
+				int exact);
+#endif
+#ifndef Tcl_PkgPresentEx_TCL_DECLARED
+#define Tcl_PkgPresentEx_TCL_DECLARED
 /* 272 */
-EXTERN CONST84_RETURN char * Tcl_PkgPresentEx _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name,
-				CONST char *version, int exact,
-				ClientData *clientDataPtr));
+EXTERN CONST84_RETURN char * Tcl_PkgPresentEx(Tcl_Interp *interp,
+				CONST char *name, CONST char *version,
+				int exact, ClientData *clientDataPtr);
+#endif
+#ifndef Tcl_PkgProvide_TCL_DECLARED
+#define Tcl_PkgProvide_TCL_DECLARED
 /* 273 */
-EXTERN int		Tcl_PkgProvide _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *name, CONST char *version));
+EXTERN int		Tcl_PkgProvide(Tcl_Interp *interp, CONST char *name,
+				CONST char *version);
+#endif
+#ifndef Tcl_PkgRequire_TCL_DECLARED
+#define Tcl_PkgRequire_TCL_DECLARED
 /* 274 */
-EXTERN CONST84_RETURN char * Tcl_PkgRequire _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN CONST84_RETURN char * Tcl_PkgRequire(Tcl_Interp *interp,
 				CONST char *name, CONST char *version,
-				int exact));
+				int exact);
+#endif
+#ifndef Tcl_SetErrorCodeVA_TCL_DECLARED
+#define Tcl_SetErrorCodeVA_TCL_DECLARED
 /* 275 */
-EXTERN void		Tcl_SetErrorCodeVA _ANSI_ARGS_((Tcl_Interp *interp,
-				va_list argList));
+EXTERN void		Tcl_SetErrorCodeVA(Tcl_Interp *interp,
+				va_list argList);
+#endif
+#ifndef Tcl_VarEvalVA_TCL_DECLARED
+#define Tcl_VarEvalVA_TCL_DECLARED
 /* 276 */
-EXTERN int		Tcl_VarEvalVA _ANSI_ARGS_((Tcl_Interp *interp,
-				va_list argList));
+EXTERN int		Tcl_VarEvalVA(Tcl_Interp *interp, va_list argList);
+#endif
+#ifndef Tcl_WaitPid_TCL_DECLARED
+#define Tcl_WaitPid_TCL_DECLARED
 /* 277 */
-EXTERN Tcl_Pid		Tcl_WaitPid _ANSI_ARGS_((Tcl_Pid pid, int *statPtr,
-				int options));
+EXTERN Tcl_Pid		Tcl_WaitPid(Tcl_Pid pid, int *statPtr, int options);
+#endif
+#ifndef Tcl_PanicVA_TCL_DECLARED
+#define Tcl_PanicVA_TCL_DECLARED
 /* 278 */
-EXTERN void		Tcl_PanicVA _ANSI_ARGS_((CONST char *format,
-				va_list argList));
+EXTERN void		Tcl_PanicVA(CONST char *format, va_list argList);
+#endif
+#ifndef Tcl_GetVersion_TCL_DECLARED
+#define Tcl_GetVersion_TCL_DECLARED
 /* 279 */
-EXTERN void		Tcl_GetVersion _ANSI_ARGS_((int *major, int *minor,
-				int *patchLevel, int *type));
+EXTERN void		Tcl_GetVersion(int *major, int *minor,
+				int *patchLevel, int *type);
+#endif
+#ifndef Tcl_InitMemory_TCL_DECLARED
+#define Tcl_InitMemory_TCL_DECLARED
 /* 280 */
-EXTERN void		Tcl_InitMemory _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_InitMemory(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_StackChannel_TCL_DECLARED
+#define Tcl_StackChannel_TCL_DECLARED
 /* 281 */
-EXTERN Tcl_Channel	Tcl_StackChannel _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Channel	Tcl_StackChannel(Tcl_Interp *interp,
 				Tcl_ChannelType *typePtr,
 				ClientData instanceData, int mask,
-				Tcl_Channel prevChan));
+				Tcl_Channel prevChan);
+#endif
+#ifndef Tcl_UnstackChannel_TCL_DECLARED
+#define Tcl_UnstackChannel_TCL_DECLARED
 /* 282 */
-EXTERN int		Tcl_UnstackChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
+EXTERN int		Tcl_UnstackChannel(Tcl_Interp *interp,
+				Tcl_Channel chan);
+#endif
+#ifndef Tcl_GetStackedChannel_TCL_DECLARED
+#define Tcl_GetStackedChannel_TCL_DECLARED
 /* 283 */
-EXTERN Tcl_Channel	Tcl_GetStackedChannel _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN Tcl_Channel	Tcl_GetStackedChannel(Tcl_Channel chan);
+#endif
+#ifndef Tcl_SetMainLoop_TCL_DECLARED
+#define Tcl_SetMainLoop_TCL_DECLARED
 /* 284 */
-EXTERN void		Tcl_SetMainLoop _ANSI_ARGS_((Tcl_MainLoopProc *proc));
+EXTERN void		Tcl_SetMainLoop(Tcl_MainLoopProc *proc);
+#endif
 /* Slot 285 is reserved */
+#ifndef Tcl_AppendObjToObj_TCL_DECLARED
+#define Tcl_AppendObjToObj_TCL_DECLARED
 /* 286 */
-EXTERN void		Tcl_AppendObjToObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				Tcl_Obj *appendObjPtr));
+EXTERN void		Tcl_AppendObjToObj(Tcl_Obj *objPtr,
+				Tcl_Obj *appendObjPtr);
+#endif
+#ifndef Tcl_CreateEncoding_TCL_DECLARED
+#define Tcl_CreateEncoding_TCL_DECLARED
 /* 287 */
-EXTERN Tcl_Encoding	Tcl_CreateEncoding _ANSI_ARGS_((
-				Tcl_EncodingType *typePtr));
+EXTERN Tcl_Encoding	Tcl_CreateEncoding(CONST Tcl_EncodingType *typePtr);
+#endif
+#ifndef Tcl_CreateThreadExitHandler_TCL_DECLARED
+#define Tcl_CreateThreadExitHandler_TCL_DECLARED
 /* 288 */
-EXTERN void		Tcl_CreateThreadExitHandler _ANSI_ARGS_((
-				Tcl_ExitProc *proc, ClientData clientData));
+EXTERN void		Tcl_CreateThreadExitHandler(Tcl_ExitProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_DeleteThreadExitHandler_TCL_DECLARED
+#define Tcl_DeleteThreadExitHandler_TCL_DECLARED
 /* 289 */
-EXTERN void		Tcl_DeleteThreadExitHandler _ANSI_ARGS_((
-				Tcl_ExitProc *proc, ClientData clientData));
+EXTERN void		Tcl_DeleteThreadExitHandler(Tcl_ExitProc *proc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_DiscardResult_TCL_DECLARED
+#define Tcl_DiscardResult_TCL_DECLARED
 /* 290 */
-EXTERN void		Tcl_DiscardResult _ANSI_ARGS_((
-				Tcl_SavedResult *statePtr));
+EXTERN void		Tcl_DiscardResult(Tcl_SavedResult *statePtr);
+#endif
+#ifndef Tcl_EvalEx_TCL_DECLARED
+#define Tcl_EvalEx_TCL_DECLARED
 /* 291 */
-EXTERN int		Tcl_EvalEx _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *script, int numBytes, int flags));
+EXTERN int		Tcl_EvalEx(Tcl_Interp *interp, CONST char *script,
+				int numBytes, int flags);
+#endif
+#ifndef Tcl_EvalObjv_TCL_DECLARED
+#define Tcl_EvalObjv_TCL_DECLARED
 /* 292 */
-EXTERN int		Tcl_EvalObjv _ANSI_ARGS_((Tcl_Interp *interp,
-				int objc, Tcl_Obj *CONST objv[], int flags));
+EXTERN int		Tcl_EvalObjv(Tcl_Interp *interp, int objc,
+				Tcl_Obj *CONST objv[], int flags);
+#endif
+#ifndef Tcl_EvalObjEx_TCL_DECLARED
+#define Tcl_EvalObjEx_TCL_DECLARED
 /* 293 */
-EXTERN int		Tcl_EvalObjEx _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, int flags));
+EXTERN int		Tcl_EvalObjEx(Tcl_Interp *interp, Tcl_Obj *objPtr,
+				int flags);
+#endif
+#ifndef Tcl_ExitThread_TCL_DECLARED
+#define Tcl_ExitThread_TCL_DECLARED
 /* 294 */
-EXTERN void		Tcl_ExitThread _ANSI_ARGS_((int status));
+EXTERN void		Tcl_ExitThread(int status);
+#endif
+#ifndef Tcl_ExternalToUtf_TCL_DECLARED
+#define Tcl_ExternalToUtf_TCL_DECLARED
 /* 295 */
-EXTERN int		Tcl_ExternalToUtf _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ExternalToUtf(Tcl_Interp *interp,
 				Tcl_Encoding encoding, CONST char *src,
 				int srcLen, int flags,
 				Tcl_EncodingState *statePtr, char *dst,
 				int dstLen, int *srcReadPtr,
-				int *dstWrotePtr, int *dstCharsPtr));
+				int *dstWrotePtr, int *dstCharsPtr);
+#endif
+#ifndef Tcl_ExternalToUtfDString_TCL_DECLARED
+#define Tcl_ExternalToUtfDString_TCL_DECLARED
 /* 296 */
-EXTERN char *		Tcl_ExternalToUtfDString _ANSI_ARGS_((
-				Tcl_Encoding encoding, CONST char *src,
-				int srcLen, Tcl_DString *dsPtr));
+EXTERN char *		Tcl_ExternalToUtfDString(Tcl_Encoding encoding,
+				CONST char *src, int srcLen,
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_FinalizeThread_TCL_DECLARED
+#define Tcl_FinalizeThread_TCL_DECLARED
 /* 297 */
-EXTERN void		Tcl_FinalizeThread _ANSI_ARGS_((void));
+EXTERN void		Tcl_FinalizeThread(void);
+#endif
+#ifndef Tcl_FinalizeNotifier_TCL_DECLARED
+#define Tcl_FinalizeNotifier_TCL_DECLARED
 /* 298 */
-EXTERN void		Tcl_FinalizeNotifier _ANSI_ARGS_((
-				ClientData clientData));
+EXTERN void		Tcl_FinalizeNotifier(ClientData clientData);
+#endif
+#ifndef Tcl_FreeEncoding_TCL_DECLARED
+#define Tcl_FreeEncoding_TCL_DECLARED
 /* 299 */
-EXTERN void		Tcl_FreeEncoding _ANSI_ARGS_((Tcl_Encoding encoding));
+EXTERN void		Tcl_FreeEncoding(Tcl_Encoding encoding);
+#endif
+#ifndef Tcl_GetCurrentThread_TCL_DECLARED
+#define Tcl_GetCurrentThread_TCL_DECLARED
 /* 300 */
-EXTERN Tcl_ThreadId	Tcl_GetCurrentThread _ANSI_ARGS_((void));
+EXTERN Tcl_ThreadId	Tcl_GetCurrentThread(void);
+#endif
+#ifndef Tcl_GetEncoding_TCL_DECLARED
+#define Tcl_GetEncoding_TCL_DECLARED
 /* 301 */
-EXTERN Tcl_Encoding	Tcl_GetEncoding _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *name));
+EXTERN Tcl_Encoding	Tcl_GetEncoding(Tcl_Interp *interp, CONST char *name);
+#endif
+#ifndef Tcl_GetEncodingName_TCL_DECLARED
+#define Tcl_GetEncodingName_TCL_DECLARED
 /* 302 */
-EXTERN CONST84_RETURN char * Tcl_GetEncodingName _ANSI_ARGS_((
-				Tcl_Encoding encoding));
+EXTERN CONST84_RETURN char * Tcl_GetEncodingName(Tcl_Encoding encoding);
+#endif
+#ifndef Tcl_GetEncodingNames_TCL_DECLARED
+#define Tcl_GetEncodingNames_TCL_DECLARED
 /* 303 */
-EXTERN void		Tcl_GetEncodingNames _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_GetEncodingNames(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetIndexFromObjStruct_TCL_DECLARED
+#define Tcl_GetIndexFromObjStruct_TCL_DECLARED
 /* 304 */
-EXTERN int		Tcl_GetIndexFromObjStruct _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *objPtr,
-				CONST VOID *tablePtr, int offset,
-				CONST char *msg, int flags, int *indexPtr));
+EXTERN int		Tcl_GetIndexFromObjStruct(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, CONST VOID *tablePtr,
+				int offset, CONST char *msg, int flags,
+				int *indexPtr);
+#endif
+#ifndef Tcl_GetThreadData_TCL_DECLARED
+#define Tcl_GetThreadData_TCL_DECLARED
 /* 305 */
-EXTERN VOID *		Tcl_GetThreadData _ANSI_ARGS_((
-				Tcl_ThreadDataKey *keyPtr, int size));
+EXTERN VOID *		Tcl_GetThreadData(Tcl_ThreadDataKey *keyPtr,
+				int size);
+#endif
+#ifndef Tcl_GetVar2Ex_TCL_DECLARED
+#define Tcl_GetVar2Ex_TCL_DECLARED
 /* 306 */
-EXTERN Tcl_Obj *	Tcl_GetVar2Ex _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *part1, CONST char *part2,
-				int flags));
+EXTERN Tcl_Obj *	Tcl_GetVar2Ex(Tcl_Interp *interp, CONST char *part1,
+				CONST char *part2, int flags);
+#endif
+#ifndef Tcl_InitNotifier_TCL_DECLARED
+#define Tcl_InitNotifier_TCL_DECLARED
 /* 307 */
-EXTERN ClientData	Tcl_InitNotifier _ANSI_ARGS_((void));
+EXTERN ClientData	Tcl_InitNotifier(void);
+#endif
+#ifndef Tcl_MutexLock_TCL_DECLARED
+#define Tcl_MutexLock_TCL_DECLARED
 /* 308 */
-EXTERN void		Tcl_MutexLock _ANSI_ARGS_((Tcl_Mutex *mutexPtr));
+EXTERN void		Tcl_MutexLock(Tcl_Mutex *mutexPtr);
+#endif
+#ifndef Tcl_MutexUnlock_TCL_DECLARED
+#define Tcl_MutexUnlock_TCL_DECLARED
 /* 309 */
-EXTERN void		Tcl_MutexUnlock _ANSI_ARGS_((Tcl_Mutex *mutexPtr));
+EXTERN void		Tcl_MutexUnlock(Tcl_Mutex *mutexPtr);
+#endif
+#ifndef Tcl_ConditionNotify_TCL_DECLARED
+#define Tcl_ConditionNotify_TCL_DECLARED
 /* 310 */
-EXTERN void		Tcl_ConditionNotify _ANSI_ARGS_((
-				Tcl_Condition *condPtr));
+EXTERN void		Tcl_ConditionNotify(Tcl_Condition *condPtr);
+#endif
+#ifndef Tcl_ConditionWait_TCL_DECLARED
+#define Tcl_ConditionWait_TCL_DECLARED
 /* 311 */
-EXTERN void		Tcl_ConditionWait _ANSI_ARGS_((
-				Tcl_Condition *condPtr, Tcl_Mutex *mutexPtr,
-				Tcl_Time *timePtr));
+EXTERN void		Tcl_ConditionWait(Tcl_Condition *condPtr,
+				Tcl_Mutex *mutexPtr, Tcl_Time *timePtr);
+#endif
+#ifndef Tcl_NumUtfChars_TCL_DECLARED
+#define Tcl_NumUtfChars_TCL_DECLARED
 /* 312 */
-EXTERN int		Tcl_NumUtfChars _ANSI_ARGS_((CONST char *src,
-				int length));
+EXTERN int		Tcl_NumUtfChars(CONST char *src, int length);
+#endif
+#ifndef Tcl_ReadChars_TCL_DECLARED
+#define Tcl_ReadChars_TCL_DECLARED
 /* 313 */
-EXTERN int		Tcl_ReadChars _ANSI_ARGS_((Tcl_Channel channel,
-				Tcl_Obj *objPtr, int charsToRead,
-				int appendFlag));
+EXTERN int		Tcl_ReadChars(Tcl_Channel channel, Tcl_Obj *objPtr,
+				int charsToRead, int appendFlag);
+#endif
+#ifndef Tcl_RestoreResult_TCL_DECLARED
+#define Tcl_RestoreResult_TCL_DECLARED
 /* 314 */
-EXTERN void		Tcl_RestoreResult _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_SavedResult *statePtr));
+EXTERN void		Tcl_RestoreResult(Tcl_Interp *interp,
+				Tcl_SavedResult *statePtr);
+#endif
+#ifndef Tcl_SaveResult_TCL_DECLARED
+#define Tcl_SaveResult_TCL_DECLARED
 /* 315 */
-EXTERN void		Tcl_SaveResult _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_SavedResult *statePtr));
+EXTERN void		Tcl_SaveResult(Tcl_Interp *interp,
+				Tcl_SavedResult *statePtr);
+#endif
+#ifndef Tcl_SetSystemEncoding_TCL_DECLARED
+#define Tcl_SetSystemEncoding_TCL_DECLARED
 /* 316 */
-EXTERN int		Tcl_SetSystemEncoding _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name));
+EXTERN int		Tcl_SetSystemEncoding(Tcl_Interp *interp,
+				CONST char *name);
+#endif
+#ifndef Tcl_SetVar2Ex_TCL_DECLARED
+#define Tcl_SetVar2Ex_TCL_DECLARED
 /* 317 */
-EXTERN Tcl_Obj *	Tcl_SetVar2Ex _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *part1, CONST char *part2,
-				Tcl_Obj *newValuePtr, int flags));
+EXTERN Tcl_Obj *	Tcl_SetVar2Ex(Tcl_Interp *interp, CONST char *part1,
+				CONST char *part2, Tcl_Obj *newValuePtr,
+				int flags);
+#endif
+#ifndef Tcl_ThreadAlert_TCL_DECLARED
+#define Tcl_ThreadAlert_TCL_DECLARED
 /* 318 */
-EXTERN void		Tcl_ThreadAlert _ANSI_ARGS_((Tcl_ThreadId threadId));
+EXTERN void		Tcl_ThreadAlert(Tcl_ThreadId threadId);
+#endif
+#ifndef Tcl_ThreadQueueEvent_TCL_DECLARED
+#define Tcl_ThreadQueueEvent_TCL_DECLARED
 /* 319 */
-EXTERN void		Tcl_ThreadQueueEvent _ANSI_ARGS_((
-				Tcl_ThreadId threadId, Tcl_Event *evPtr,
-				Tcl_QueuePosition position));
+EXTERN void		Tcl_ThreadQueueEvent(Tcl_ThreadId threadId,
+				Tcl_Event *evPtr, Tcl_QueuePosition position);
+#endif
+#ifndef Tcl_UniCharAtIndex_TCL_DECLARED
+#define Tcl_UniCharAtIndex_TCL_DECLARED
 /* 320 */
-EXTERN Tcl_UniChar	Tcl_UniCharAtIndex _ANSI_ARGS_((CONST char *src,
-				int index));
+EXTERN Tcl_UniChar	Tcl_UniCharAtIndex(CONST char *src, int index);
+#endif
+#ifndef Tcl_UniCharToLower_TCL_DECLARED
+#define Tcl_UniCharToLower_TCL_DECLARED
 /* 321 */
-EXTERN Tcl_UniChar	Tcl_UniCharToLower _ANSI_ARGS_((int ch));
+EXTERN Tcl_UniChar	Tcl_UniCharToLower(int ch);
+#endif
+#ifndef Tcl_UniCharToTitle_TCL_DECLARED
+#define Tcl_UniCharToTitle_TCL_DECLARED
 /* 322 */
-EXTERN Tcl_UniChar	Tcl_UniCharToTitle _ANSI_ARGS_((int ch));
+EXTERN Tcl_UniChar	Tcl_UniCharToTitle(int ch);
+#endif
+#ifndef Tcl_UniCharToUpper_TCL_DECLARED
+#define Tcl_UniCharToUpper_TCL_DECLARED
 /* 323 */
-EXTERN Tcl_UniChar	Tcl_UniCharToUpper _ANSI_ARGS_((int ch));
+EXTERN Tcl_UniChar	Tcl_UniCharToUpper(int ch);
+#endif
+#ifndef Tcl_UniCharToUtf_TCL_DECLARED
+#define Tcl_UniCharToUtf_TCL_DECLARED
 /* 324 */
-EXTERN int		Tcl_UniCharToUtf _ANSI_ARGS_((int ch, char *buf));
+EXTERN int		Tcl_UniCharToUtf(int ch, char *buf);
+#endif
+#ifndef Tcl_UtfAtIndex_TCL_DECLARED
+#define Tcl_UtfAtIndex_TCL_DECLARED
 /* 325 */
-EXTERN CONST84_RETURN char * Tcl_UtfAtIndex _ANSI_ARGS_((CONST char *src,
-				int index));
+EXTERN CONST84_RETURN char * Tcl_UtfAtIndex(CONST char *src, int index);
+#endif
+#ifndef Tcl_UtfCharComplete_TCL_DECLARED
+#define Tcl_UtfCharComplete_TCL_DECLARED
 /* 326 */
-EXTERN int		Tcl_UtfCharComplete _ANSI_ARGS_((CONST char *src,
-				int length));
+EXTERN int		Tcl_UtfCharComplete(CONST char *src, int length);
+#endif
+#ifndef Tcl_UtfBackslash_TCL_DECLARED
+#define Tcl_UtfBackslash_TCL_DECLARED
 /* 327 */
-EXTERN int		Tcl_UtfBackslash _ANSI_ARGS_((CONST char *src,
-				int *readPtr, char *dst));
+EXTERN int		Tcl_UtfBackslash(CONST char *src, int *readPtr,
+				char *dst);
+#endif
+#ifndef Tcl_UtfFindFirst_TCL_DECLARED
+#define Tcl_UtfFindFirst_TCL_DECLARED
 /* 328 */
-EXTERN CONST84_RETURN char * Tcl_UtfFindFirst _ANSI_ARGS_((CONST char *src,
-				int ch));
+EXTERN CONST84_RETURN char * Tcl_UtfFindFirst(CONST char *src, int ch);
+#endif
+#ifndef Tcl_UtfFindLast_TCL_DECLARED
+#define Tcl_UtfFindLast_TCL_DECLARED
 /* 329 */
-EXTERN CONST84_RETURN char * Tcl_UtfFindLast _ANSI_ARGS_((CONST char *src,
-				int ch));
+EXTERN CONST84_RETURN char * Tcl_UtfFindLast(CONST char *src, int ch);
+#endif
+#ifndef Tcl_UtfNext_TCL_DECLARED
+#define Tcl_UtfNext_TCL_DECLARED
 /* 330 */
-EXTERN CONST84_RETURN char * Tcl_UtfNext _ANSI_ARGS_((CONST char *src));
+EXTERN CONST84_RETURN char * Tcl_UtfNext(CONST char *src);
+#endif
+#ifndef Tcl_UtfPrev_TCL_DECLARED
+#define Tcl_UtfPrev_TCL_DECLARED
 /* 331 */
-EXTERN CONST84_RETURN char * Tcl_UtfPrev _ANSI_ARGS_((CONST char *src,
-				CONST char *start));
+EXTERN CONST84_RETURN char * Tcl_UtfPrev(CONST char *src, CONST char *start);
+#endif
+#ifndef Tcl_UtfToExternal_TCL_DECLARED
+#define Tcl_UtfToExternal_TCL_DECLARED
 /* 332 */
-EXTERN int		Tcl_UtfToExternal _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_UtfToExternal(Tcl_Interp *interp,
 				Tcl_Encoding encoding, CONST char *src,
 				int srcLen, int flags,
 				Tcl_EncodingState *statePtr, char *dst,
 				int dstLen, int *srcReadPtr,
-				int *dstWrotePtr, int *dstCharsPtr));
+				int *dstWrotePtr, int *dstCharsPtr);
+#endif
+#ifndef Tcl_UtfToExternalDString_TCL_DECLARED
+#define Tcl_UtfToExternalDString_TCL_DECLARED
 /* 333 */
-EXTERN char *		Tcl_UtfToExternalDString _ANSI_ARGS_((
-				Tcl_Encoding encoding, CONST char *src,
-				int srcLen, Tcl_DString *dsPtr));
+EXTERN char *		Tcl_UtfToExternalDString(Tcl_Encoding encoding,
+				CONST char *src, int srcLen,
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_UtfToLower_TCL_DECLARED
+#define Tcl_UtfToLower_TCL_DECLARED
 /* 334 */
-EXTERN int		Tcl_UtfToLower _ANSI_ARGS_((char *src));
+EXTERN int		Tcl_UtfToLower(char *src);
+#endif
+#ifndef Tcl_UtfToTitle_TCL_DECLARED
+#define Tcl_UtfToTitle_TCL_DECLARED
 /* 335 */
-EXTERN int		Tcl_UtfToTitle _ANSI_ARGS_((char *src));
+EXTERN int		Tcl_UtfToTitle(char *src);
+#endif
+#ifndef Tcl_UtfToUniChar_TCL_DECLARED
+#define Tcl_UtfToUniChar_TCL_DECLARED
 /* 336 */
-EXTERN int		Tcl_UtfToUniChar _ANSI_ARGS_((CONST char *src,
-				Tcl_UniChar *chPtr));
+EXTERN int		Tcl_UtfToUniChar(CONST char *src, Tcl_UniChar *chPtr);
+#endif
+#ifndef Tcl_UtfToUpper_TCL_DECLARED
+#define Tcl_UtfToUpper_TCL_DECLARED
 /* 337 */
-EXTERN int		Tcl_UtfToUpper _ANSI_ARGS_((char *src));
+EXTERN int		Tcl_UtfToUpper(char *src);
+#endif
+#ifndef Tcl_WriteChars_TCL_DECLARED
+#define Tcl_WriteChars_TCL_DECLARED
 /* 338 */
-EXTERN int		Tcl_WriteChars _ANSI_ARGS_((Tcl_Channel chan,
-				CONST char *src, int srcLen));
+EXTERN int		Tcl_WriteChars(Tcl_Channel chan, CONST char *src,
+				int srcLen);
+#endif
+#ifndef Tcl_WriteObj_TCL_DECLARED
+#define Tcl_WriteObj_TCL_DECLARED
 /* 339 */
-EXTERN int		Tcl_WriteObj _ANSI_ARGS_((Tcl_Channel chan,
-				Tcl_Obj *objPtr));
+EXTERN int		Tcl_WriteObj(Tcl_Channel chan, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetString_TCL_DECLARED
+#define Tcl_GetString_TCL_DECLARED
 /* 340 */
-EXTERN char *		Tcl_GetString _ANSI_ARGS_((Tcl_Obj *objPtr));
+EXTERN char *		Tcl_GetString(Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetDefaultEncodingDir_TCL_DECLARED
+#define Tcl_GetDefaultEncodingDir_TCL_DECLARED
 /* 341 */
-EXTERN CONST84_RETURN char * Tcl_GetDefaultEncodingDir _ANSI_ARGS_((void));
+EXTERN CONST84_RETURN char * Tcl_GetDefaultEncodingDir(void);
+#endif
+#ifndef Tcl_SetDefaultEncodingDir_TCL_DECLARED
+#define Tcl_SetDefaultEncodingDir_TCL_DECLARED
 /* 342 */
-EXTERN void		Tcl_SetDefaultEncodingDir _ANSI_ARGS_((
-				CONST char *path));
+EXTERN void		Tcl_SetDefaultEncodingDir(CONST char *path);
+#endif
+#ifndef Tcl_AlertNotifier_TCL_DECLARED
+#define Tcl_AlertNotifier_TCL_DECLARED
 /* 343 */
-EXTERN void		Tcl_AlertNotifier _ANSI_ARGS_((ClientData clientData));
+EXTERN void		Tcl_AlertNotifier(ClientData clientData);
+#endif
+#ifndef Tcl_ServiceModeHook_TCL_DECLARED
+#define Tcl_ServiceModeHook_TCL_DECLARED
 /* 344 */
-EXTERN void		Tcl_ServiceModeHook _ANSI_ARGS_((int mode));
+EXTERN void		Tcl_ServiceModeHook(int mode);
+#endif
+#ifndef Tcl_UniCharIsAlnum_TCL_DECLARED
+#define Tcl_UniCharIsAlnum_TCL_DECLARED
 /* 345 */
-EXTERN int		Tcl_UniCharIsAlnum _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsAlnum(int ch);
+#endif
+#ifndef Tcl_UniCharIsAlpha_TCL_DECLARED
+#define Tcl_UniCharIsAlpha_TCL_DECLARED
 /* 346 */
-EXTERN int		Tcl_UniCharIsAlpha _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsAlpha(int ch);
+#endif
+#ifndef Tcl_UniCharIsDigit_TCL_DECLARED
+#define Tcl_UniCharIsDigit_TCL_DECLARED
 /* 347 */
-EXTERN int		Tcl_UniCharIsDigit _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsDigit(int ch);
+#endif
+#ifndef Tcl_UniCharIsLower_TCL_DECLARED
+#define Tcl_UniCharIsLower_TCL_DECLARED
 /* 348 */
-EXTERN int		Tcl_UniCharIsLower _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsLower(int ch);
+#endif
+#ifndef Tcl_UniCharIsSpace_TCL_DECLARED
+#define Tcl_UniCharIsSpace_TCL_DECLARED
 /* 349 */
-EXTERN int		Tcl_UniCharIsSpace _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsSpace(int ch);
+#endif
+#ifndef Tcl_UniCharIsUpper_TCL_DECLARED
+#define Tcl_UniCharIsUpper_TCL_DECLARED
 /* 350 */
-EXTERN int		Tcl_UniCharIsUpper _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsUpper(int ch);
+#endif
+#ifndef Tcl_UniCharIsWordChar_TCL_DECLARED
+#define Tcl_UniCharIsWordChar_TCL_DECLARED
 /* 351 */
-EXTERN int		Tcl_UniCharIsWordChar _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsWordChar(int ch);
+#endif
+#ifndef Tcl_UniCharLen_TCL_DECLARED
+#define Tcl_UniCharLen_TCL_DECLARED
 /* 352 */
-EXTERN int		Tcl_UniCharLen _ANSI_ARGS_((
-				CONST Tcl_UniChar *uniStr));
+EXTERN int		Tcl_UniCharLen(CONST Tcl_UniChar *uniStr);
+#endif
+#ifndef Tcl_UniCharNcmp_TCL_DECLARED
+#define Tcl_UniCharNcmp_TCL_DECLARED
 /* 353 */
-EXTERN int		Tcl_UniCharNcmp _ANSI_ARGS_((CONST Tcl_UniChar *ucs,
+EXTERN int		Tcl_UniCharNcmp(CONST Tcl_UniChar *ucs,
 				CONST Tcl_UniChar *uct,
-				unsigned long numChars));
+				unsigned long numChars);
+#endif
+#ifndef Tcl_UniCharToUtfDString_TCL_DECLARED
+#define Tcl_UniCharToUtfDString_TCL_DECLARED
 /* 354 */
-EXTERN char *		Tcl_UniCharToUtfDString _ANSI_ARGS_((
-				CONST Tcl_UniChar *uniStr, int uniLength,
-				Tcl_DString *dsPtr));
+EXTERN char *		Tcl_UniCharToUtfDString(CONST Tcl_UniChar *uniStr,
+				int uniLength, Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_UtfToUniCharDString_TCL_DECLARED
+#define Tcl_UtfToUniCharDString_TCL_DECLARED
 /* 355 */
-EXTERN Tcl_UniChar *	Tcl_UtfToUniCharDString _ANSI_ARGS_((CONST char *src,
-				int length, Tcl_DString *dsPtr));
+EXTERN Tcl_UniChar *	Tcl_UtfToUniCharDString(CONST char *src, int length,
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_GetRegExpFromObj_TCL_DECLARED
+#define Tcl_GetRegExpFromObj_TCL_DECLARED
 /* 356 */
-EXTERN Tcl_RegExp	Tcl_GetRegExpFromObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *patObj, int flags));
+EXTERN Tcl_RegExp	Tcl_GetRegExpFromObj(Tcl_Interp *interp,
+				Tcl_Obj *patObj, int flags);
+#endif
+#ifndef Tcl_EvalTokens_TCL_DECLARED
+#define Tcl_EvalTokens_TCL_DECLARED
 /* 357 */
-EXTERN Tcl_Obj *	Tcl_EvalTokens _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Token *tokenPtr, int count));
+EXTERN Tcl_Obj *	Tcl_EvalTokens(Tcl_Interp *interp,
+				Tcl_Token *tokenPtr, int count);
+#endif
+#ifndef Tcl_FreeParse_TCL_DECLARED
+#define Tcl_FreeParse_TCL_DECLARED
 /* 358 */
-EXTERN void		Tcl_FreeParse _ANSI_ARGS_((Tcl_Parse *parsePtr));
+EXTERN void		Tcl_FreeParse(Tcl_Parse *parsePtr);
+#endif
+#ifndef Tcl_LogCommandInfo_TCL_DECLARED
+#define Tcl_LogCommandInfo_TCL_DECLARED
 /* 359 */
-EXTERN void		Tcl_LogCommandInfo _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_LogCommandInfo(Tcl_Interp *interp,
 				CONST char *script, CONST char *command,
-				int length));
+				int length);
+#endif
+#ifndef Tcl_ParseBraces_TCL_DECLARED
+#define Tcl_ParseBraces_TCL_DECLARED
 /* 360 */
-EXTERN int		Tcl_ParseBraces _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ParseBraces(Tcl_Interp *interp,
 				CONST char *start, int numBytes,
 				Tcl_Parse *parsePtr, int append,
-				CONST84 char **termPtr));
+				CONST84 char **termPtr);
+#endif
+#ifndef Tcl_ParseCommand_TCL_DECLARED
+#define Tcl_ParseCommand_TCL_DECLARED
 /* 361 */
-EXTERN int		Tcl_ParseCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ParseCommand(Tcl_Interp *interp,
 				CONST char *start, int numBytes, int nested,
-				Tcl_Parse *parsePtr));
+				Tcl_Parse *parsePtr);
+#endif
+#ifndef Tcl_ParseExpr_TCL_DECLARED
+#define Tcl_ParseExpr_TCL_DECLARED
 /* 362 */
-EXTERN int		Tcl_ParseExpr _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *start, int numBytes,
-				Tcl_Parse *parsePtr));
+EXTERN int		Tcl_ParseExpr(Tcl_Interp *interp, CONST char *start,
+				int numBytes, Tcl_Parse *parsePtr);
+#endif
+#ifndef Tcl_ParseQuotedString_TCL_DECLARED
+#define Tcl_ParseQuotedString_TCL_DECLARED
 /* 363 */
-EXTERN int		Tcl_ParseQuotedString _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *start,
-				int numBytes, Tcl_Parse *parsePtr,
-				int append, CONST84 char **termPtr));
+EXTERN int		Tcl_ParseQuotedString(Tcl_Interp *interp,
+				CONST char *start, int numBytes,
+				Tcl_Parse *parsePtr, int append,
+				CONST84 char **termPtr);
+#endif
+#ifndef Tcl_ParseVarName_TCL_DECLARED
+#define Tcl_ParseVarName_TCL_DECLARED
 /* 364 */
-EXTERN int		Tcl_ParseVarName _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_ParseVarName(Tcl_Interp *interp,
 				CONST char *start, int numBytes,
-				Tcl_Parse *parsePtr, int append));
+				Tcl_Parse *parsePtr, int append);
+#endif
+#ifndef Tcl_GetCwd_TCL_DECLARED
+#define Tcl_GetCwd_TCL_DECLARED
 /* 365 */
-EXTERN char *		Tcl_GetCwd _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_DString *cwdPtr));
+EXTERN char *		Tcl_GetCwd(Tcl_Interp *interp, Tcl_DString *cwdPtr);
+#endif
+#ifndef Tcl_Chdir_TCL_DECLARED
+#define Tcl_Chdir_TCL_DECLARED
 /* 366 */
-EXTERN int		Tcl_Chdir _ANSI_ARGS_((CONST char *dirName));
+EXTERN int		Tcl_Chdir(CONST char *dirName);
+#endif
+#ifndef Tcl_Access_TCL_DECLARED
+#define Tcl_Access_TCL_DECLARED
 /* 367 */
-EXTERN int		Tcl_Access _ANSI_ARGS_((CONST char *path, int mode));
+EXTERN int		Tcl_Access(CONST char *path, int mode);
+#endif
+#ifndef Tcl_Stat_TCL_DECLARED
+#define Tcl_Stat_TCL_DECLARED
 /* 368 */
-EXTERN int		Tcl_Stat _ANSI_ARGS_((CONST char *path,
-				struct stat *bufPtr));
+EXTERN int		Tcl_Stat(CONST char *path, struct stat *bufPtr);
+#endif
+#ifndef Tcl_UtfNcmp_TCL_DECLARED
+#define Tcl_UtfNcmp_TCL_DECLARED
 /* 369 */
-EXTERN int		Tcl_UtfNcmp _ANSI_ARGS_((CONST char *s1,
-				CONST char *s2, unsigned long n));
+EXTERN int		Tcl_UtfNcmp(CONST char *s1, CONST char *s2,
+				unsigned long n);
+#endif
+#ifndef Tcl_UtfNcasecmp_TCL_DECLARED
+#define Tcl_UtfNcasecmp_TCL_DECLARED
 /* 370 */
-EXTERN int		Tcl_UtfNcasecmp _ANSI_ARGS_((CONST char *s1,
-				CONST char *s2, unsigned long n));
+EXTERN int		Tcl_UtfNcasecmp(CONST char *s1, CONST char *s2,
+				unsigned long n);
+#endif
+#ifndef Tcl_StringCaseMatch_TCL_DECLARED
+#define Tcl_StringCaseMatch_TCL_DECLARED
 /* 371 */
-EXTERN int		Tcl_StringCaseMatch _ANSI_ARGS_((CONST char *str,
-				CONST char *pattern, int nocase));
+EXTERN int		Tcl_StringCaseMatch(CONST char *str,
+				CONST char *pattern, int nocase);
+#endif
+#ifndef Tcl_UniCharIsControl_TCL_DECLARED
+#define Tcl_UniCharIsControl_TCL_DECLARED
 /* 372 */
-EXTERN int		Tcl_UniCharIsControl _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsControl(int ch);
+#endif
+#ifndef Tcl_UniCharIsGraph_TCL_DECLARED
+#define Tcl_UniCharIsGraph_TCL_DECLARED
 /* 373 */
-EXTERN int		Tcl_UniCharIsGraph _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsGraph(int ch);
+#endif
+#ifndef Tcl_UniCharIsPrint_TCL_DECLARED
+#define Tcl_UniCharIsPrint_TCL_DECLARED
 /* 374 */
-EXTERN int		Tcl_UniCharIsPrint _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsPrint(int ch);
+#endif
+#ifndef Tcl_UniCharIsPunct_TCL_DECLARED
+#define Tcl_UniCharIsPunct_TCL_DECLARED
 /* 375 */
-EXTERN int		Tcl_UniCharIsPunct _ANSI_ARGS_((int ch));
+EXTERN int		Tcl_UniCharIsPunct(int ch);
+#endif
+#ifndef Tcl_RegExpExecObj_TCL_DECLARED
+#define Tcl_RegExpExecObj_TCL_DECLARED
 /* 376 */
-EXTERN int		Tcl_RegExpExecObj _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_RegExpExecObj(Tcl_Interp *interp,
 				Tcl_RegExp regexp, Tcl_Obj *textObj,
-				int offset, int nmatches, int flags));
+				int offset, int nmatches, int flags);
+#endif
+#ifndef Tcl_RegExpGetInfo_TCL_DECLARED
+#define Tcl_RegExpGetInfo_TCL_DECLARED
 /* 377 */
-EXTERN void		Tcl_RegExpGetInfo _ANSI_ARGS_((Tcl_RegExp regexp,
-				Tcl_RegExpInfo *infoPtr));
+EXTERN void		Tcl_RegExpGetInfo(Tcl_RegExp regexp,
+				Tcl_RegExpInfo *infoPtr);
+#endif
+#ifndef Tcl_NewUnicodeObj_TCL_DECLARED
+#define Tcl_NewUnicodeObj_TCL_DECLARED
 /* 378 */
-EXTERN Tcl_Obj *	Tcl_NewUnicodeObj _ANSI_ARGS_((
-				CONST Tcl_UniChar *unicode, int numChars));
+EXTERN Tcl_Obj *	Tcl_NewUnicodeObj(CONST Tcl_UniChar *unicode,
+				int numChars);
+#endif
+#ifndef Tcl_SetUnicodeObj_TCL_DECLARED
+#define Tcl_SetUnicodeObj_TCL_DECLARED
 /* 379 */
-EXTERN void		Tcl_SetUnicodeObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST Tcl_UniChar *unicode, int numChars));
+EXTERN void		Tcl_SetUnicodeObj(Tcl_Obj *objPtr,
+				CONST Tcl_UniChar *unicode, int numChars);
+#endif
+#ifndef Tcl_GetCharLength_TCL_DECLARED
+#define Tcl_GetCharLength_TCL_DECLARED
 /* 380 */
-EXTERN int		Tcl_GetCharLength _ANSI_ARGS_((Tcl_Obj *objPtr));
+EXTERN int		Tcl_GetCharLength(Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetUniChar_TCL_DECLARED
+#define Tcl_GetUniChar_TCL_DECLARED
 /* 381 */
-EXTERN Tcl_UniChar	Tcl_GetUniChar _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int index));
+EXTERN Tcl_UniChar	Tcl_GetUniChar(Tcl_Obj *objPtr, int index);
+#endif
+#ifndef Tcl_GetUnicode_TCL_DECLARED
+#define Tcl_GetUnicode_TCL_DECLARED
 /* 382 */
-EXTERN Tcl_UniChar *	Tcl_GetUnicode _ANSI_ARGS_((Tcl_Obj *objPtr));
+EXTERN Tcl_UniChar *	Tcl_GetUnicode(Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetRange_TCL_DECLARED
+#define Tcl_GetRange_TCL_DECLARED
 /* 383 */
-EXTERN Tcl_Obj *	Tcl_GetRange _ANSI_ARGS_((Tcl_Obj *objPtr, int first,
-				int last));
+EXTERN Tcl_Obj *	Tcl_GetRange(Tcl_Obj *objPtr, int first, int last);
+#endif
+#ifndef Tcl_AppendUnicodeToObj_TCL_DECLARED
+#define Tcl_AppendUnicodeToObj_TCL_DECLARED
 /* 384 */
-EXTERN void		Tcl_AppendUnicodeToObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				CONST Tcl_UniChar *unicode, int length));
+EXTERN void		Tcl_AppendUnicodeToObj(Tcl_Obj *objPtr,
+				CONST Tcl_UniChar *unicode, int length);
+#endif
+#ifndef Tcl_RegExpMatchObj_TCL_DECLARED
+#define Tcl_RegExpMatchObj_TCL_DECLARED
 /* 385 */
-EXTERN int		Tcl_RegExpMatchObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *textObj, Tcl_Obj *patternObj));
+EXTERN int		Tcl_RegExpMatchObj(Tcl_Interp *interp,
+				Tcl_Obj *textObj, Tcl_Obj *patternObj);
+#endif
+#ifndef Tcl_SetNotifier_TCL_DECLARED
+#define Tcl_SetNotifier_TCL_DECLARED
 /* 386 */
-EXTERN void		Tcl_SetNotifier _ANSI_ARGS_((
-				Tcl_NotifierProcs *notifierProcPtr));
+EXTERN void		Tcl_SetNotifier(Tcl_NotifierProcs *notifierProcPtr);
+#endif
+#ifndef Tcl_GetAllocMutex_TCL_DECLARED
+#define Tcl_GetAllocMutex_TCL_DECLARED
 /* 387 */
-EXTERN Tcl_Mutex *	Tcl_GetAllocMutex _ANSI_ARGS_((void));
+EXTERN Tcl_Mutex *	Tcl_GetAllocMutex(void);
+#endif
+#ifndef Tcl_GetChannelNames_TCL_DECLARED
+#define Tcl_GetChannelNames_TCL_DECLARED
 /* 388 */
-EXTERN int		Tcl_GetChannelNames _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN int		Tcl_GetChannelNames(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetChannelNamesEx_TCL_DECLARED
+#define Tcl_GetChannelNamesEx_TCL_DECLARED
 /* 389 */
-EXTERN int		Tcl_GetChannelNamesEx _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *pattern));
+EXTERN int		Tcl_GetChannelNamesEx(Tcl_Interp *interp,
+				CONST char *pattern);
+#endif
+#ifndef Tcl_ProcObjCmd_TCL_DECLARED
+#define Tcl_ProcObjCmd_TCL_DECLARED
 /* 390 */
-EXTERN int		Tcl_ProcObjCmd _ANSI_ARGS_((ClientData clientData,
+EXTERN int		Tcl_ProcObjCmd(ClientData clientData,
 				Tcl_Interp *interp, int objc,
-				Tcl_Obj *CONST objv[]));
+				Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_ConditionFinalize_TCL_DECLARED
+#define Tcl_ConditionFinalize_TCL_DECLARED
 /* 391 */
-EXTERN void		Tcl_ConditionFinalize _ANSI_ARGS_((
-				Tcl_Condition *condPtr));
+EXTERN void		Tcl_ConditionFinalize(Tcl_Condition *condPtr);
+#endif
+#ifndef Tcl_MutexFinalize_TCL_DECLARED
+#define Tcl_MutexFinalize_TCL_DECLARED
 /* 392 */
-EXTERN void		Tcl_MutexFinalize _ANSI_ARGS_((Tcl_Mutex *mutex));
+EXTERN void		Tcl_MutexFinalize(Tcl_Mutex *mutex);
+#endif
+#ifndef Tcl_CreateThread_TCL_DECLARED
+#define Tcl_CreateThread_TCL_DECLARED
 /* 393 */
-EXTERN int		Tcl_CreateThread _ANSI_ARGS_((Tcl_ThreadId *idPtr,
+EXTERN int		Tcl_CreateThread(Tcl_ThreadId *idPtr,
 				Tcl_ThreadCreateProc proc,
 				ClientData clientData, int stackSize,
-				int flags));
+				int flags);
+#endif
+#ifndef Tcl_ReadRaw_TCL_DECLARED
+#define Tcl_ReadRaw_TCL_DECLARED
 /* 394 */
-EXTERN int		Tcl_ReadRaw _ANSI_ARGS_((Tcl_Channel chan, char *dst,
-				int bytesToRead));
+EXTERN int		Tcl_ReadRaw(Tcl_Channel chan, char *dst,
+				int bytesToRead);
+#endif
+#ifndef Tcl_WriteRaw_TCL_DECLARED
+#define Tcl_WriteRaw_TCL_DECLARED
 /* 395 */
-EXTERN int		Tcl_WriteRaw _ANSI_ARGS_((Tcl_Channel chan,
-				CONST char *src, int srcLen));
+EXTERN int		Tcl_WriteRaw(Tcl_Channel chan, CONST char *src,
+				int srcLen);
+#endif
+#ifndef Tcl_GetTopChannel_TCL_DECLARED
+#define Tcl_GetTopChannel_TCL_DECLARED
 /* 396 */
-EXTERN Tcl_Channel	Tcl_GetTopChannel _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN Tcl_Channel	Tcl_GetTopChannel(Tcl_Channel chan);
+#endif
+#ifndef Tcl_ChannelBuffered_TCL_DECLARED
+#define Tcl_ChannelBuffered_TCL_DECLARED
 /* 397 */
-EXTERN int		Tcl_ChannelBuffered _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_ChannelBuffered(Tcl_Channel chan);
+#endif
+#ifndef Tcl_ChannelName_TCL_DECLARED
+#define Tcl_ChannelName_TCL_DECLARED
 /* 398 */
-EXTERN CONST84_RETURN char * Tcl_ChannelName _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN CONST84_RETURN char * Tcl_ChannelName(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelVersion_TCL_DECLARED
+#define Tcl_ChannelVersion_TCL_DECLARED
 /* 399 */
-EXTERN Tcl_ChannelTypeVersion Tcl_ChannelVersion _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_ChannelTypeVersion Tcl_ChannelVersion(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelBlockModeProc_TCL_DECLARED
+#define Tcl_ChannelBlockModeProc_TCL_DECLARED
 /* 400 */
-EXTERN Tcl_DriverBlockModeProc * Tcl_ChannelBlockModeProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverBlockModeProc * Tcl_ChannelBlockModeProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelCloseProc_TCL_DECLARED
+#define Tcl_ChannelCloseProc_TCL_DECLARED
 /* 401 */
-EXTERN Tcl_DriverCloseProc * Tcl_ChannelCloseProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverCloseProc * Tcl_ChannelCloseProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelClose2Proc_TCL_DECLARED
+#define Tcl_ChannelClose2Proc_TCL_DECLARED
 /* 402 */
-EXTERN Tcl_DriverClose2Proc * Tcl_ChannelClose2Proc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverClose2Proc * Tcl_ChannelClose2Proc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelInputProc_TCL_DECLARED
+#define Tcl_ChannelInputProc_TCL_DECLARED
 /* 403 */
-EXTERN Tcl_DriverInputProc * Tcl_ChannelInputProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverInputProc * Tcl_ChannelInputProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelOutputProc_TCL_DECLARED
+#define Tcl_ChannelOutputProc_TCL_DECLARED
 /* 404 */
-EXTERN Tcl_DriverOutputProc * Tcl_ChannelOutputProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverOutputProc * Tcl_ChannelOutputProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelSeekProc_TCL_DECLARED
+#define Tcl_ChannelSeekProc_TCL_DECLARED
 /* 405 */
-EXTERN Tcl_DriverSeekProc * Tcl_ChannelSeekProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverSeekProc * Tcl_ChannelSeekProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelSetOptionProc_TCL_DECLARED
+#define Tcl_ChannelSetOptionProc_TCL_DECLARED
 /* 406 */
-EXTERN Tcl_DriverSetOptionProc * Tcl_ChannelSetOptionProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverSetOptionProc * Tcl_ChannelSetOptionProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelGetOptionProc_TCL_DECLARED
+#define Tcl_ChannelGetOptionProc_TCL_DECLARED
 /* 407 */
-EXTERN Tcl_DriverGetOptionProc * Tcl_ChannelGetOptionProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverGetOptionProc * Tcl_ChannelGetOptionProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelWatchProc_TCL_DECLARED
+#define Tcl_ChannelWatchProc_TCL_DECLARED
 /* 408 */
-EXTERN Tcl_DriverWatchProc * Tcl_ChannelWatchProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverWatchProc * Tcl_ChannelWatchProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelGetHandleProc_TCL_DECLARED
+#define Tcl_ChannelGetHandleProc_TCL_DECLARED
 /* 409 */
-EXTERN Tcl_DriverGetHandleProc * Tcl_ChannelGetHandleProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverGetHandleProc * Tcl_ChannelGetHandleProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelFlushProc_TCL_DECLARED
+#define Tcl_ChannelFlushProc_TCL_DECLARED
 /* 410 */
-EXTERN Tcl_DriverFlushProc * Tcl_ChannelFlushProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverFlushProc * Tcl_ChannelFlushProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_ChannelHandlerProc_TCL_DECLARED
+#define Tcl_ChannelHandlerProc_TCL_DECLARED
 /* 411 */
-EXTERN Tcl_DriverHandlerProc * Tcl_ChannelHandlerProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
+EXTERN Tcl_DriverHandlerProc * Tcl_ChannelHandlerProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_JoinThread_TCL_DECLARED
+#define Tcl_JoinThread_TCL_DECLARED
 /* 412 */
-EXTERN int		Tcl_JoinThread _ANSI_ARGS_((Tcl_ThreadId threadId,
-				int *result));
+EXTERN int		Tcl_JoinThread(Tcl_ThreadId threadId, int *result);
+#endif
+#ifndef Tcl_IsChannelShared_TCL_DECLARED
+#define Tcl_IsChannelShared_TCL_DECLARED
 /* 413 */
-EXTERN int		Tcl_IsChannelShared _ANSI_ARGS_((Tcl_Channel channel));
+EXTERN int		Tcl_IsChannelShared(Tcl_Channel channel);
+#endif
+#ifndef Tcl_IsChannelRegistered_TCL_DECLARED
+#define Tcl_IsChannelRegistered_TCL_DECLARED
 /* 414 */
-EXTERN int		Tcl_IsChannelRegistered _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Channel channel));
+EXTERN int		Tcl_IsChannelRegistered(Tcl_Interp *interp,
+				Tcl_Channel channel);
+#endif
+#ifndef Tcl_CutChannel_TCL_DECLARED
+#define Tcl_CutChannel_TCL_DECLARED
 /* 415 */
-EXTERN void		Tcl_CutChannel _ANSI_ARGS_((Tcl_Channel channel));
+EXTERN void		Tcl_CutChannel(Tcl_Channel channel);
+#endif
+#ifndef Tcl_SpliceChannel_TCL_DECLARED
+#define Tcl_SpliceChannel_TCL_DECLARED
 /* 416 */
-EXTERN void		Tcl_SpliceChannel _ANSI_ARGS_((Tcl_Channel channel));
+EXTERN void		Tcl_SpliceChannel(Tcl_Channel channel);
+#endif
+#ifndef Tcl_ClearChannelHandlers_TCL_DECLARED
+#define Tcl_ClearChannelHandlers_TCL_DECLARED
 /* 417 */
-EXTERN void		Tcl_ClearChannelHandlers _ANSI_ARGS_((
-				Tcl_Channel channel));
+EXTERN void		Tcl_ClearChannelHandlers(Tcl_Channel channel);
+#endif
+#ifndef Tcl_IsChannelExisting_TCL_DECLARED
+#define Tcl_IsChannelExisting_TCL_DECLARED
 /* 418 */
-EXTERN int		Tcl_IsChannelExisting _ANSI_ARGS_((
-				CONST char *channelName));
+EXTERN int		Tcl_IsChannelExisting(CONST char *channelName);
+#endif
+#ifndef Tcl_UniCharNcasecmp_TCL_DECLARED
+#define Tcl_UniCharNcasecmp_TCL_DECLARED
 /* 419 */
-EXTERN int		Tcl_UniCharNcasecmp _ANSI_ARGS_((
-				CONST Tcl_UniChar *ucs,
+EXTERN int		Tcl_UniCharNcasecmp(CONST Tcl_UniChar *ucs,
 				CONST Tcl_UniChar *uct,
-				unsigned long numChars));
+				unsigned long numChars);
+#endif
+#ifndef Tcl_UniCharCaseMatch_TCL_DECLARED
+#define Tcl_UniCharCaseMatch_TCL_DECLARED
 /* 420 */
-EXTERN int		Tcl_UniCharCaseMatch _ANSI_ARGS_((
-				CONST Tcl_UniChar *uniStr,
-				CONST Tcl_UniChar *uniPattern, int nocase));
+EXTERN int		Tcl_UniCharCaseMatch(CONST Tcl_UniChar *uniStr,
+				CONST Tcl_UniChar *uniPattern, int nocase);
+#endif
+#ifndef Tcl_FindHashEntry_TCL_DECLARED
+#define Tcl_FindHashEntry_TCL_DECLARED
 /* 421 */
-EXTERN Tcl_HashEntry *	Tcl_FindHashEntry _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr, CONST char *key));
+EXTERN Tcl_HashEntry *	Tcl_FindHashEntry(Tcl_HashTable *tablePtr,
+				CONST char *key);
+#endif
+#ifndef Tcl_CreateHashEntry_TCL_DECLARED
+#define Tcl_CreateHashEntry_TCL_DECLARED
 /* 422 */
-EXTERN Tcl_HashEntry *	Tcl_CreateHashEntry _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr, CONST char *key,
-				int *newPtr));
+EXTERN Tcl_HashEntry *	Tcl_CreateHashEntry(Tcl_HashTable *tablePtr,
+				CONST char *key, int *newPtr);
+#endif
+#ifndef Tcl_InitCustomHashTable_TCL_DECLARED
+#define Tcl_InitCustomHashTable_TCL_DECLARED
 /* 423 */
-EXTERN void		Tcl_InitCustomHashTable _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr, int keyType,
-				Tcl_HashKeyType *typePtr));
+EXTERN void		Tcl_InitCustomHashTable(Tcl_HashTable *tablePtr,
+				int keyType, Tcl_HashKeyType *typePtr);
+#endif
+#ifndef Tcl_InitObjHashTable_TCL_DECLARED
+#define Tcl_InitObjHashTable_TCL_DECLARED
 /* 424 */
-EXTERN void		Tcl_InitObjHashTable _ANSI_ARGS_((
-				Tcl_HashTable *tablePtr));
+EXTERN void		Tcl_InitObjHashTable(Tcl_HashTable *tablePtr);
+#endif
+#ifndef Tcl_CommandTraceInfo_TCL_DECLARED
+#define Tcl_CommandTraceInfo_TCL_DECLARED
 /* 425 */
-EXTERN ClientData	Tcl_CommandTraceInfo _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN ClientData	Tcl_CommandTraceInfo(Tcl_Interp *interp,
 				CONST char *varName, int flags,
 				Tcl_CommandTraceProc *procPtr,
-				ClientData prevClientData));
+				ClientData prevClientData);
+#endif
+#ifndef Tcl_TraceCommand_TCL_DECLARED
+#define Tcl_TraceCommand_TCL_DECLARED
 /* 426 */
-EXTERN int		Tcl_TraceCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_TraceCommand(Tcl_Interp *interp,
 				CONST char *varName, int flags,
 				Tcl_CommandTraceProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_UntraceCommand_TCL_DECLARED
+#define Tcl_UntraceCommand_TCL_DECLARED
 /* 427 */
-EXTERN void		Tcl_UntraceCommand _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN void		Tcl_UntraceCommand(Tcl_Interp *interp,
 				CONST char *varName, int flags,
 				Tcl_CommandTraceProc *proc,
-				ClientData clientData));
+				ClientData clientData);
+#endif
+#ifndef Tcl_AttemptAlloc_TCL_DECLARED
+#define Tcl_AttemptAlloc_TCL_DECLARED
 /* 428 */
-EXTERN char *		Tcl_AttemptAlloc _ANSI_ARGS_((unsigned int size));
+EXTERN char *		Tcl_AttemptAlloc(unsigned int size);
+#endif
+#ifndef Tcl_AttemptDbCkalloc_TCL_DECLARED
+#define Tcl_AttemptDbCkalloc_TCL_DECLARED
 /* 429 */
-EXTERN char *		Tcl_AttemptDbCkalloc _ANSI_ARGS_((unsigned int size,
-				CONST char *file, int line));
+EXTERN char *		Tcl_AttemptDbCkalloc(unsigned int size,
+				CONST char *file, int line);
+#endif
+#ifndef Tcl_AttemptRealloc_TCL_DECLARED
+#define Tcl_AttemptRealloc_TCL_DECLARED
 /* 430 */
-EXTERN char *		Tcl_AttemptRealloc _ANSI_ARGS_((char *ptr,
-				unsigned int size));
+EXTERN char *		Tcl_AttemptRealloc(char *ptr, unsigned int size);
+#endif
+#ifndef Tcl_AttemptDbCkrealloc_TCL_DECLARED
+#define Tcl_AttemptDbCkrealloc_TCL_DECLARED
 /* 431 */
-EXTERN char *		Tcl_AttemptDbCkrealloc _ANSI_ARGS_((char *ptr,
-				unsigned int size, CONST char *file,
-				int line));
+EXTERN char *		Tcl_AttemptDbCkrealloc(char *ptr, unsigned int size,
+				CONST char *file, int line);
+#endif
+#ifndef Tcl_AttemptSetObjLength_TCL_DECLARED
+#define Tcl_AttemptSetObjLength_TCL_DECLARED
 /* 432 */
-EXTERN int		Tcl_AttemptSetObjLength _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int length));
+EXTERN int		Tcl_AttemptSetObjLength(Tcl_Obj *objPtr, int length);
+#endif
+#ifndef Tcl_GetChannelThread_TCL_DECLARED
+#define Tcl_GetChannelThread_TCL_DECLARED
 /* 433 */
-EXTERN Tcl_ThreadId	Tcl_GetChannelThread _ANSI_ARGS_((
-				Tcl_Channel channel));
+EXTERN Tcl_ThreadId	Tcl_GetChannelThread(Tcl_Channel channel);
+#endif
+#ifndef Tcl_GetUnicodeFromObj_TCL_DECLARED
+#define Tcl_GetUnicodeFromObj_TCL_DECLARED
 /* 434 */
-EXTERN Tcl_UniChar *	Tcl_GetUnicodeFromObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				int *lengthPtr));
+EXTERN Tcl_UniChar *	Tcl_GetUnicodeFromObj(Tcl_Obj *objPtr,
+				int *lengthPtr);
+#endif
+#ifndef Tcl_GetMathFuncInfo_TCL_DECLARED
+#define Tcl_GetMathFuncInfo_TCL_DECLARED
 /* 435 */
-EXTERN int		Tcl_GetMathFuncInfo _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_GetMathFuncInfo(Tcl_Interp *interp,
 				CONST char *name, int *numArgsPtr,
 				Tcl_ValueType **argTypesPtr,
 				Tcl_MathProc **procPtr,
-				ClientData *clientDataPtr));
+				ClientData *clientDataPtr);
+#endif
+#ifndef Tcl_ListMathFuncs_TCL_DECLARED
+#define Tcl_ListMathFuncs_TCL_DECLARED
 /* 436 */
-EXTERN Tcl_Obj *	Tcl_ListMathFuncs _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *pattern));
+EXTERN Tcl_Obj *	Tcl_ListMathFuncs(Tcl_Interp *interp,
+				CONST char *pattern);
+#endif
+#ifndef Tcl_SubstObj_TCL_DECLARED
+#define Tcl_SubstObj_TCL_DECLARED
 /* 437 */
-EXTERN Tcl_Obj *	Tcl_SubstObj _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, int flags));
+EXTERN Tcl_Obj *	Tcl_SubstObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+				int flags);
+#endif
+#ifndef Tcl_DetachChannel_TCL_DECLARED
+#define Tcl_DetachChannel_TCL_DECLARED
 /* 438 */
-EXTERN int		Tcl_DetachChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel channel));
+EXTERN int		Tcl_DetachChannel(Tcl_Interp *interp,
+				Tcl_Channel channel);
+#endif
+#ifndef Tcl_IsStandardChannel_TCL_DECLARED
+#define Tcl_IsStandardChannel_TCL_DECLARED
 /* 439 */
-EXTERN int		Tcl_IsStandardChannel _ANSI_ARGS_((
-				Tcl_Channel channel));
+EXTERN int		Tcl_IsStandardChannel(Tcl_Channel channel);
+#endif
+#ifndef Tcl_FSCopyFile_TCL_DECLARED
+#define Tcl_FSCopyFile_TCL_DECLARED
 /* 440 */
-EXTERN int		Tcl_FSCopyFile _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
-				Tcl_Obj *destPathPtr));
+EXTERN int		Tcl_FSCopyFile(Tcl_Obj *srcPathPtr,
+				Tcl_Obj *destPathPtr);
+#endif
+#ifndef Tcl_FSCopyDirectory_TCL_DECLARED
+#define Tcl_FSCopyDirectory_TCL_DECLARED
 /* 441 */
-EXTERN int		Tcl_FSCopyDirectory _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
-				Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr));
+EXTERN int		Tcl_FSCopyDirectory(Tcl_Obj *srcPathPtr,
+				Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr);
+#endif
+#ifndef Tcl_FSCreateDirectory_TCL_DECLARED
+#define Tcl_FSCreateDirectory_TCL_DECLARED
 /* 442 */
-EXTERN int		Tcl_FSCreateDirectory _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN int		Tcl_FSCreateDirectory(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSDeleteFile_TCL_DECLARED
+#define Tcl_FSDeleteFile_TCL_DECLARED
 /* 443 */
-EXTERN int		Tcl_FSDeleteFile _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN int		Tcl_FSDeleteFile(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSLoadFile_TCL_DECLARED
+#define Tcl_FSLoadFile_TCL_DECLARED
 /* 444 */
-EXTERN int		Tcl_FSLoadFile _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *pathPtr, CONST char *sym1,
-				CONST char *sym2,
+EXTERN int		Tcl_FSLoadFile(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+				CONST char *sym1, CONST char *sym2,
 				Tcl_PackageInitProc **proc1Ptr,
 				Tcl_PackageInitProc **proc2Ptr,
 				Tcl_LoadHandle *handlePtr,
-				Tcl_FSUnloadFileProc **unloadProcPtr));
+				Tcl_FSUnloadFileProc **unloadProcPtr);
+#endif
+#ifndef Tcl_FSMatchInDirectory_TCL_DECLARED
+#define Tcl_FSMatchInDirectory_TCL_DECLARED
 /* 445 */
-EXTERN int		Tcl_FSMatchInDirectory _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *result,
-				Tcl_Obj *pathPtr, CONST char *pattern,
-				Tcl_GlobTypeData *types));
+EXTERN int		Tcl_FSMatchInDirectory(Tcl_Interp *interp,
+				Tcl_Obj *result, Tcl_Obj *pathPtr,
+				CONST char *pattern, Tcl_GlobTypeData *types);
+#endif
+#ifndef Tcl_FSLink_TCL_DECLARED
+#define Tcl_FSLink_TCL_DECLARED
 /* 446 */
-EXTERN Tcl_Obj *	Tcl_FSLink _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				Tcl_Obj *toPtr, int linkAction));
+EXTERN Tcl_Obj *	Tcl_FSLink(Tcl_Obj *pathPtr, Tcl_Obj *toPtr,
+				int linkAction);
+#endif
+#ifndef Tcl_FSRemoveDirectory_TCL_DECLARED
+#define Tcl_FSRemoveDirectory_TCL_DECLARED
 /* 447 */
-EXTERN int		Tcl_FSRemoveDirectory _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				int recursive, Tcl_Obj **errorPtr));
+EXTERN int		Tcl_FSRemoveDirectory(Tcl_Obj *pathPtr,
+				int recursive, Tcl_Obj **errorPtr);
+#endif
+#ifndef Tcl_FSRenameFile_TCL_DECLARED
+#define Tcl_FSRenameFile_TCL_DECLARED
 /* 448 */
-EXTERN int		Tcl_FSRenameFile _ANSI_ARGS_((Tcl_Obj *srcPathPtr,
-				Tcl_Obj *destPathPtr));
+EXTERN int		Tcl_FSRenameFile(Tcl_Obj *srcPathPtr,
+				Tcl_Obj *destPathPtr);
+#endif
+#ifndef Tcl_FSLstat_TCL_DECLARED
+#define Tcl_FSLstat_TCL_DECLARED
 /* 449 */
-EXTERN int		Tcl_FSLstat _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				Tcl_StatBuf *buf));
+EXTERN int		Tcl_FSLstat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
+#endif
+#ifndef Tcl_FSUtime_TCL_DECLARED
+#define Tcl_FSUtime_TCL_DECLARED
 /* 450 */
-EXTERN int		Tcl_FSUtime _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				struct utimbuf *tval));
+EXTERN int		Tcl_FSUtime(Tcl_Obj *pathPtr, struct utimbuf *tval);
+#endif
+#ifndef Tcl_FSFileAttrsGet_TCL_DECLARED
+#define Tcl_FSFileAttrsGet_TCL_DECLARED
 /* 451 */
-EXTERN int		Tcl_FSFileAttrsGet _ANSI_ARGS_((Tcl_Interp *interp,
-				int index, Tcl_Obj *pathPtr,
-				Tcl_Obj **objPtrRef));
+EXTERN int		Tcl_FSFileAttrsGet(Tcl_Interp *interp, int index,
+				Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef);
+#endif
+#ifndef Tcl_FSFileAttrsSet_TCL_DECLARED
+#define Tcl_FSFileAttrsSet_TCL_DECLARED
 /* 452 */
-EXTERN int		Tcl_FSFileAttrsSet _ANSI_ARGS_((Tcl_Interp *interp,
-				int index, Tcl_Obj *pathPtr, Tcl_Obj *objPtr));
+EXTERN int		Tcl_FSFileAttrsSet(Tcl_Interp *interp, int index,
+				Tcl_Obj *pathPtr, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_FSFileAttrStrings_TCL_DECLARED
+#define Tcl_FSFileAttrStrings_TCL_DECLARED
 /* 453 */
-EXTERN CONST char **	Tcl_FSFileAttrStrings _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				Tcl_Obj **objPtrRef));
+EXTERN CONST char **	Tcl_FSFileAttrStrings(Tcl_Obj *pathPtr,
+				Tcl_Obj **objPtrRef);
+#endif
+#ifndef Tcl_FSStat_TCL_DECLARED
+#define Tcl_FSStat_TCL_DECLARED
 /* 454 */
-EXTERN int		Tcl_FSStat _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				Tcl_StatBuf *buf));
+EXTERN int		Tcl_FSStat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
+#endif
+#ifndef Tcl_FSAccess_TCL_DECLARED
+#define Tcl_FSAccess_TCL_DECLARED
 /* 455 */
-EXTERN int		Tcl_FSAccess _ANSI_ARGS_((Tcl_Obj *pathPtr, int mode));
+EXTERN int		Tcl_FSAccess(Tcl_Obj *pathPtr, int mode);
+#endif
+#ifndef Tcl_FSOpenFileChannel_TCL_DECLARED
+#define Tcl_FSOpenFileChannel_TCL_DECLARED
 /* 456 */
-EXTERN Tcl_Channel	Tcl_FSOpenFileChannel _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *pathPtr,
-				CONST char *modeString, int permissions));
+EXTERN Tcl_Channel	Tcl_FSOpenFileChannel(Tcl_Interp *interp,
+				Tcl_Obj *pathPtr, CONST char *modeString,
+				int permissions);
+#endif
+#ifndef Tcl_FSGetCwd_TCL_DECLARED
+#define Tcl_FSGetCwd_TCL_DECLARED
 /* 457 */
-EXTERN Tcl_Obj *	Tcl_FSGetCwd _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN Tcl_Obj *	Tcl_FSGetCwd(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_FSChdir_TCL_DECLARED
+#define Tcl_FSChdir_TCL_DECLARED
 /* 458 */
-EXTERN int		Tcl_FSChdir _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN int		Tcl_FSChdir(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSConvertToPathType_TCL_DECLARED
+#define Tcl_FSConvertToPathType_TCL_DECLARED
 /* 459 */
-EXTERN int		Tcl_FSConvertToPathType _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *pathPtr));
+EXTERN int		Tcl_FSConvertToPathType(Tcl_Interp *interp,
+				Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSJoinPath_TCL_DECLARED
+#define Tcl_FSJoinPath_TCL_DECLARED
 /* 460 */
-EXTERN Tcl_Obj *	Tcl_FSJoinPath _ANSI_ARGS_((Tcl_Obj *listObj,
-				int elements));
+EXTERN Tcl_Obj *	Tcl_FSJoinPath(Tcl_Obj *listObj, int elements);
+#endif
+#ifndef Tcl_FSSplitPath_TCL_DECLARED
+#define Tcl_FSSplitPath_TCL_DECLARED
 /* 461 */
-EXTERN Tcl_Obj *	Tcl_FSSplitPath _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				int *lenPtr));
+EXTERN Tcl_Obj *	Tcl_FSSplitPath(Tcl_Obj *pathPtr, int *lenPtr);
+#endif
+#ifndef Tcl_FSEqualPaths_TCL_DECLARED
+#define Tcl_FSEqualPaths_TCL_DECLARED
 /* 462 */
-EXTERN int		Tcl_FSEqualPaths _ANSI_ARGS_((Tcl_Obj *firstPtr,
-				Tcl_Obj *secondPtr));
+EXTERN int		Tcl_FSEqualPaths(Tcl_Obj *firstPtr,
+				Tcl_Obj *secondPtr);
+#endif
+#ifndef Tcl_FSGetNormalizedPath_TCL_DECLARED
+#define Tcl_FSGetNormalizedPath_TCL_DECLARED
 /* 463 */
-EXTERN Tcl_Obj *	Tcl_FSGetNormalizedPath _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *pathPtr));
+EXTERN Tcl_Obj *	Tcl_FSGetNormalizedPath(Tcl_Interp *interp,
+				Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSJoinToPath_TCL_DECLARED
+#define Tcl_FSJoinToPath_TCL_DECLARED
 /* 464 */
-EXTERN Tcl_Obj *	Tcl_FSJoinToPath _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				int objc, Tcl_Obj *CONST objv[]));
+EXTERN Tcl_Obj *	Tcl_FSJoinToPath(Tcl_Obj *pathPtr, int objc,
+				Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_FSGetInternalRep_TCL_DECLARED
+#define Tcl_FSGetInternalRep_TCL_DECLARED
 /* 465 */
-EXTERN ClientData	Tcl_FSGetInternalRep _ANSI_ARGS_((Tcl_Obj *pathPtr,
-				Tcl_Filesystem *fsPtr));
+EXTERN ClientData	Tcl_FSGetInternalRep(Tcl_Obj *pathPtr,
+				Tcl_Filesystem *fsPtr);
+#endif
+#ifndef Tcl_FSGetTranslatedPath_TCL_DECLARED
+#define Tcl_FSGetTranslatedPath_TCL_DECLARED
 /* 466 */
-EXTERN Tcl_Obj *	Tcl_FSGetTranslatedPath _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *pathPtr));
+EXTERN Tcl_Obj *	Tcl_FSGetTranslatedPath(Tcl_Interp *interp,
+				Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSEvalFile_TCL_DECLARED
+#define Tcl_FSEvalFile_TCL_DECLARED
 /* 467 */
-EXTERN int		Tcl_FSEvalFile _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *fileName));
+EXTERN int		Tcl_FSEvalFile(Tcl_Interp *interp, Tcl_Obj *fileName);
+#endif
+#ifndef Tcl_FSNewNativePath_TCL_DECLARED
+#define Tcl_FSNewNativePath_TCL_DECLARED
 /* 468 */
-EXTERN Tcl_Obj *	Tcl_FSNewNativePath _ANSI_ARGS_((
-				Tcl_Filesystem *fromFilesystem,
-				ClientData clientData));
+EXTERN Tcl_Obj *	Tcl_FSNewNativePath(Tcl_Filesystem *fromFilesystem,
+				ClientData clientData);
+#endif
+#ifndef Tcl_FSGetNativePath_TCL_DECLARED
+#define Tcl_FSGetNativePath_TCL_DECLARED
 /* 469 */
-EXTERN CONST char *	Tcl_FSGetNativePath _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN CONST char *	Tcl_FSGetNativePath(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSFileSystemInfo_TCL_DECLARED
+#define Tcl_FSFileSystemInfo_TCL_DECLARED
 /* 470 */
-EXTERN Tcl_Obj *	Tcl_FSFileSystemInfo _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN Tcl_Obj *	Tcl_FSFileSystemInfo(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSPathSeparator_TCL_DECLARED
+#define Tcl_FSPathSeparator_TCL_DECLARED
 /* 471 */
-EXTERN Tcl_Obj *	Tcl_FSPathSeparator _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN Tcl_Obj *	Tcl_FSPathSeparator(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSListVolumes_TCL_DECLARED
+#define Tcl_FSListVolumes_TCL_DECLARED
 /* 472 */
-EXTERN Tcl_Obj *	Tcl_FSListVolumes _ANSI_ARGS_((void));
+EXTERN Tcl_Obj *	Tcl_FSListVolumes(void);
+#endif
+#ifndef Tcl_FSRegister_TCL_DECLARED
+#define Tcl_FSRegister_TCL_DECLARED
 /* 473 */
-EXTERN int		Tcl_FSRegister _ANSI_ARGS_((ClientData clientData,
-				Tcl_Filesystem *fsPtr));
+EXTERN int		Tcl_FSRegister(ClientData clientData,
+				Tcl_Filesystem *fsPtr);
+#endif
+#ifndef Tcl_FSUnregister_TCL_DECLARED
+#define Tcl_FSUnregister_TCL_DECLARED
 /* 474 */
-EXTERN int		Tcl_FSUnregister _ANSI_ARGS_((Tcl_Filesystem *fsPtr));
+EXTERN int		Tcl_FSUnregister(Tcl_Filesystem *fsPtr);
+#endif
+#ifndef Tcl_FSData_TCL_DECLARED
+#define Tcl_FSData_TCL_DECLARED
 /* 475 */
-EXTERN ClientData	Tcl_FSData _ANSI_ARGS_((Tcl_Filesystem *fsPtr));
+EXTERN ClientData	Tcl_FSData(Tcl_Filesystem *fsPtr);
+#endif
+#ifndef Tcl_FSGetTranslatedStringPath_TCL_DECLARED
+#define Tcl_FSGetTranslatedStringPath_TCL_DECLARED
 /* 476 */
-EXTERN CONST char *	Tcl_FSGetTranslatedStringPath _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *pathPtr));
+EXTERN CONST char *	Tcl_FSGetTranslatedStringPath(Tcl_Interp *interp,
+				Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSGetFileSystemForPath_TCL_DECLARED
+#define Tcl_FSGetFileSystemForPath_TCL_DECLARED
 /* 477 */
-EXTERN Tcl_Filesystem *	 Tcl_FSGetFileSystemForPath _ANSI_ARGS_((
-				Tcl_Obj *pathPtr));
+EXTERN Tcl_Filesystem *	 Tcl_FSGetFileSystemForPath(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_FSGetPathType_TCL_DECLARED
+#define Tcl_FSGetPathType_TCL_DECLARED
 /* 478 */
-EXTERN Tcl_PathType	Tcl_FSGetPathType _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN Tcl_PathType	Tcl_FSGetPathType(Tcl_Obj *pathPtr);
+#endif
+#ifndef Tcl_OutputBuffered_TCL_DECLARED
+#define Tcl_OutputBuffered_TCL_DECLARED
 /* 479 */
-EXTERN int		Tcl_OutputBuffered _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN int		Tcl_OutputBuffered(Tcl_Channel chan);
+#endif
+#ifndef Tcl_FSMountsChanged_TCL_DECLARED
+#define Tcl_FSMountsChanged_TCL_DECLARED
 /* 480 */
-EXTERN void		Tcl_FSMountsChanged _ANSI_ARGS_((
-				Tcl_Filesystem *fsPtr));
+EXTERN void		Tcl_FSMountsChanged(Tcl_Filesystem *fsPtr);
+#endif
+#ifndef Tcl_EvalTokensStandard_TCL_DECLARED
+#define Tcl_EvalTokensStandard_TCL_DECLARED
 /* 481 */
-EXTERN int		Tcl_EvalTokensStandard _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Token *tokenPtr,
-				int count));
+EXTERN int		Tcl_EvalTokensStandard(Tcl_Interp *interp,
+				Tcl_Token *tokenPtr, int count);
+#endif
+#ifndef Tcl_GetTime_TCL_DECLARED
+#define Tcl_GetTime_TCL_DECLARED
 /* 482 */
-EXTERN void		Tcl_GetTime _ANSI_ARGS_((Tcl_Time *timeBuf));
+EXTERN void		Tcl_GetTime(Tcl_Time *timeBuf);
+#endif
+#ifndef Tcl_CreateObjTrace_TCL_DECLARED
+#define Tcl_CreateObjTrace_TCL_DECLARED
 /* 483 */
-EXTERN Tcl_Trace	Tcl_CreateObjTrace _ANSI_ARGS_((Tcl_Interp *interp,
-				int level, int flags,
-				Tcl_CmdObjTraceProc *objProc,
+EXTERN Tcl_Trace	Tcl_CreateObjTrace(Tcl_Interp *interp, int level,
+				int flags, Tcl_CmdObjTraceProc *objProc,
 				ClientData clientData,
-				Tcl_CmdObjTraceDeleteProc *delProc));
+				Tcl_CmdObjTraceDeleteProc *delProc);
+#endif
+#ifndef Tcl_GetCommandInfoFromToken_TCL_DECLARED
+#define Tcl_GetCommandInfoFromToken_TCL_DECLARED
 /* 484 */
-EXTERN int		Tcl_GetCommandInfoFromToken _ANSI_ARGS_((
-				Tcl_Command token, Tcl_CmdInfo *infoPtr));
+EXTERN int		Tcl_GetCommandInfoFromToken(Tcl_Command token,
+				Tcl_CmdInfo *infoPtr);
+#endif
+#ifndef Tcl_SetCommandInfoFromToken_TCL_DECLARED
+#define Tcl_SetCommandInfoFromToken_TCL_DECLARED
 /* 485 */
-EXTERN int		Tcl_SetCommandInfoFromToken _ANSI_ARGS_((
-				Tcl_Command token,
-				CONST Tcl_CmdInfo *infoPtr));
+EXTERN int		Tcl_SetCommandInfoFromToken(Tcl_Command token,
+				CONST Tcl_CmdInfo *infoPtr);
+#endif
+#ifndef Tcl_DbNewWideIntObj_TCL_DECLARED
+#define Tcl_DbNewWideIntObj_TCL_DECLARED
 /* 486 */
-EXTERN Tcl_Obj *	Tcl_DbNewWideIntObj _ANSI_ARGS_((
-				Tcl_WideInt wideValue, CONST char *file,
-				int line));
+EXTERN Tcl_Obj *	Tcl_DbNewWideIntObj(Tcl_WideInt wideValue,
+				CONST char *file, int line);
+#endif
+#ifndef Tcl_GetWideIntFromObj_TCL_DECLARED
+#define Tcl_GetWideIntFromObj_TCL_DECLARED
 /* 487 */
-EXTERN int		Tcl_GetWideIntFromObj _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *objPtr,
-				Tcl_WideInt *widePtr));
+EXTERN int		Tcl_GetWideIntFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, Tcl_WideInt *widePtr);
+#endif
+#ifndef Tcl_NewWideIntObj_TCL_DECLARED
+#define Tcl_NewWideIntObj_TCL_DECLARED
 /* 488 */
-EXTERN Tcl_Obj *	Tcl_NewWideIntObj _ANSI_ARGS_((Tcl_WideInt wideValue));
+EXTERN Tcl_Obj *	Tcl_NewWideIntObj(Tcl_WideInt wideValue);
+#endif
+#ifndef Tcl_SetWideIntObj_TCL_DECLARED
+#define Tcl_SetWideIntObj_TCL_DECLARED
 /* 489 */
-EXTERN void		Tcl_SetWideIntObj _ANSI_ARGS_((Tcl_Obj *objPtr,
-				Tcl_WideInt wideValue));
+EXTERN void		Tcl_SetWideIntObj(Tcl_Obj *objPtr,
+				Tcl_WideInt wideValue);
+#endif
+#ifndef Tcl_AllocStatBuf_TCL_DECLARED
+#define Tcl_AllocStatBuf_TCL_DECLARED
 /* 490 */
-EXTERN Tcl_StatBuf *	Tcl_AllocStatBuf _ANSI_ARGS_((void));
+EXTERN Tcl_StatBuf *	Tcl_AllocStatBuf(void);
+#endif
+#ifndef Tcl_Seek_TCL_DECLARED
+#define Tcl_Seek_TCL_DECLARED
 /* 491 */
-EXTERN Tcl_WideInt	Tcl_Seek _ANSI_ARGS_((Tcl_Channel chan,
-				Tcl_WideInt offset, int mode));
+EXTERN Tcl_WideInt	Tcl_Seek(Tcl_Channel chan, Tcl_WideInt offset,
+				int mode);
+#endif
+#ifndef Tcl_Tell_TCL_DECLARED
+#define Tcl_Tell_TCL_DECLARED
 /* 492 */
-EXTERN Tcl_WideInt	Tcl_Tell _ANSI_ARGS_((Tcl_Channel chan));
+EXTERN Tcl_WideInt	Tcl_Tell(Tcl_Channel chan);
+#endif
+#ifndef Tcl_ChannelWideSeekProc_TCL_DECLARED
+#define Tcl_ChannelWideSeekProc_TCL_DECLARED
 /* 493 */
-EXTERN Tcl_DriverWideSeekProc * Tcl_ChannelWideSeekProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
-/* Slot 494 is reserved */
-/* Slot 495 is reserved */
-/* Slot 496 is reserved */
-/* Slot 497 is reserved */
-/* Slot 498 is reserved */
-/* Slot 499 is reserved */
-/* Slot 500 is reserved */
-/* Slot 501 is reserved */
-/* Slot 502 is reserved */
-/* Slot 503 is reserved */
-/* Slot 504 is reserved */
-/* Slot 505 is reserved */
-/* Slot 506 is reserved */
-/* Slot 507 is reserved */
-/* Slot 508 is reserved */
-/* Slot 509 is reserved */
-/* Slot 510 is reserved */
-/* Slot 511 is reserved */
-/* Slot 512 is reserved */
-/* Slot 513 is reserved */
-/* Slot 514 is reserved */
-/* Slot 515 is reserved */
-/* Slot 516 is reserved */
-/* Slot 517 is reserved */
-/* Slot 518 is reserved */
-/* Slot 519 is reserved */
-/* Slot 520 is reserved */
-/* Slot 521 is reserved */
-/* Slot 522 is reserved */
-/* Slot 523 is reserved */
-/* Slot 524 is reserved */
-/* Slot 525 is reserved */
-/* Slot 526 is reserved */
-/* Slot 527 is reserved */
-/* Slot 528 is reserved */
-/* Slot 529 is reserved */
-/* Slot 530 is reserved */
-/* Slot 531 is reserved */
-/* Slot 532 is reserved */
-/* Slot 533 is reserved */
-/* Slot 534 is reserved */
-/* Slot 535 is reserved */
-/* Slot 536 is reserved */
-/* Slot 537 is reserved */
-/* Slot 538 is reserved */
-/* Slot 539 is reserved */
-/* Slot 540 is reserved */
-/* Slot 541 is reserved */
-/* Slot 542 is reserved */
-/* Slot 543 is reserved */
-/* Slot 544 is reserved */
-/* Slot 545 is reserved */
-/* Slot 546 is reserved */
-/* Slot 547 is reserved */
-/* Slot 548 is reserved */
-/* Slot 549 is reserved */
-/* Slot 550 is reserved */
-/* Slot 551 is reserved */
-/* Slot 552 is reserved */
-/* Slot 553 is reserved */
+EXTERN Tcl_DriverWideSeekProc * Tcl_ChannelWideSeekProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_DictObjPut_TCL_DECLARED
+#define Tcl_DictObjPut_TCL_DECLARED
+/* 494 */
+EXTERN int		Tcl_DictObjPut(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+				Tcl_Obj *keyPtr, Tcl_Obj *valuePtr);
+#endif
+#ifndef Tcl_DictObjGet_TCL_DECLARED
+#define Tcl_DictObjGet_TCL_DECLARED
+/* 495 */
+EXTERN int		Tcl_DictObjGet(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+				Tcl_Obj *keyPtr, Tcl_Obj **valuePtrPtr);
+#endif
+#ifndef Tcl_DictObjRemove_TCL_DECLARED
+#define Tcl_DictObjRemove_TCL_DECLARED
+/* 496 */
+EXTERN int		Tcl_DictObjRemove(Tcl_Interp *interp,
+				Tcl_Obj *dictPtr, Tcl_Obj *keyPtr);
+#endif
+#ifndef Tcl_DictObjSize_TCL_DECLARED
+#define Tcl_DictObjSize_TCL_DECLARED
+/* 497 */
+EXTERN int		Tcl_DictObjSize(Tcl_Interp *interp, Tcl_Obj *dictPtr,
+				int *sizePtr);
+#endif
+#ifndef Tcl_DictObjFirst_TCL_DECLARED
+#define Tcl_DictObjFirst_TCL_DECLARED
+/* 498 */
+EXTERN int		Tcl_DictObjFirst(Tcl_Interp *interp,
+				Tcl_Obj *dictPtr, Tcl_DictSearch *searchPtr,
+				Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr,
+				int *donePtr);
+#endif
+#ifndef Tcl_DictObjNext_TCL_DECLARED
+#define Tcl_DictObjNext_TCL_DECLARED
+/* 499 */
+EXTERN void		Tcl_DictObjNext(Tcl_DictSearch *searchPtr,
+				Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr,
+				int *donePtr);
+#endif
+#ifndef Tcl_DictObjDone_TCL_DECLARED
+#define Tcl_DictObjDone_TCL_DECLARED
+/* 500 */
+EXTERN void		Tcl_DictObjDone(Tcl_DictSearch *searchPtr);
+#endif
+#ifndef Tcl_DictObjPutKeyList_TCL_DECLARED
+#define Tcl_DictObjPutKeyList_TCL_DECLARED
+/* 501 */
+EXTERN int		Tcl_DictObjPutKeyList(Tcl_Interp *interp,
+				Tcl_Obj *dictPtr, int keyc,
+				Tcl_Obj *CONST *keyv, Tcl_Obj *valuePtr);
+#endif
+#ifndef Tcl_DictObjRemoveKeyList_TCL_DECLARED
+#define Tcl_DictObjRemoveKeyList_TCL_DECLARED
+/* 502 */
+EXTERN int		Tcl_DictObjRemoveKeyList(Tcl_Interp *interp,
+				Tcl_Obj *dictPtr, int keyc,
+				Tcl_Obj *CONST *keyv);
+#endif
+#ifndef Tcl_NewDictObj_TCL_DECLARED
+#define Tcl_NewDictObj_TCL_DECLARED
+/* 503 */
+EXTERN Tcl_Obj *	Tcl_NewDictObj(void);
+#endif
+#ifndef Tcl_DbNewDictObj_TCL_DECLARED
+#define Tcl_DbNewDictObj_TCL_DECLARED
+/* 504 */
+EXTERN Tcl_Obj *	Tcl_DbNewDictObj(CONST char *file, int line);
+#endif
+#ifndef Tcl_RegisterConfig_TCL_DECLARED
+#define Tcl_RegisterConfig_TCL_DECLARED
+/* 505 */
+EXTERN void		Tcl_RegisterConfig(Tcl_Interp *interp,
+				CONST char *pkgName,
+				Tcl_Config *configuration,
+				CONST char *valEncoding);
+#endif
+#ifndef Tcl_CreateNamespace_TCL_DECLARED
+#define Tcl_CreateNamespace_TCL_DECLARED
+/* 506 */
+EXTERN Tcl_Namespace *	Tcl_CreateNamespace(Tcl_Interp *interp,
+				CONST char *name, ClientData clientData,
+				Tcl_NamespaceDeleteProc *deleteProc);
+#endif
+#ifndef Tcl_DeleteNamespace_TCL_DECLARED
+#define Tcl_DeleteNamespace_TCL_DECLARED
+/* 507 */
+EXTERN void		Tcl_DeleteNamespace(Tcl_Namespace *nsPtr);
+#endif
+#ifndef Tcl_AppendExportList_TCL_DECLARED
+#define Tcl_AppendExportList_TCL_DECLARED
+/* 508 */
+EXTERN int		Tcl_AppendExportList(Tcl_Interp *interp,
+				Tcl_Namespace *nsPtr, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_Export_TCL_DECLARED
+#define Tcl_Export_TCL_DECLARED
+/* 509 */
+EXTERN int		Tcl_Export(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+				CONST char *pattern, int resetListFirst);
+#endif
+#ifndef Tcl_Import_TCL_DECLARED
+#define Tcl_Import_TCL_DECLARED
+/* 510 */
+EXTERN int		Tcl_Import(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+				CONST char *pattern, int allowOverwrite);
+#endif
+#ifndef Tcl_ForgetImport_TCL_DECLARED
+#define Tcl_ForgetImport_TCL_DECLARED
+/* 511 */
+EXTERN int		Tcl_ForgetImport(Tcl_Interp *interp,
+				Tcl_Namespace *nsPtr, CONST char *pattern);
+#endif
+#ifndef Tcl_GetCurrentNamespace_TCL_DECLARED
+#define Tcl_GetCurrentNamespace_TCL_DECLARED
+/* 512 */
+EXTERN Tcl_Namespace *	Tcl_GetCurrentNamespace(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetGlobalNamespace_TCL_DECLARED
+#define Tcl_GetGlobalNamespace_TCL_DECLARED
+/* 513 */
+EXTERN Tcl_Namespace *	Tcl_GetGlobalNamespace(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_FindNamespace_TCL_DECLARED
+#define Tcl_FindNamespace_TCL_DECLARED
+/* 514 */
+EXTERN Tcl_Namespace *	Tcl_FindNamespace(Tcl_Interp *interp,
+				CONST char *name,
+				Tcl_Namespace *contextNsPtr, int flags);
+#endif
+#ifndef Tcl_FindCommand_TCL_DECLARED
+#define Tcl_FindCommand_TCL_DECLARED
+/* 515 */
+EXTERN Tcl_Command	Tcl_FindCommand(Tcl_Interp *interp, CONST char *name,
+				Tcl_Namespace *contextNsPtr, int flags);
+#endif
+#ifndef Tcl_GetCommandFromObj_TCL_DECLARED
+#define Tcl_GetCommandFromObj_TCL_DECLARED
+/* 516 */
+EXTERN Tcl_Command	Tcl_GetCommandFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetCommandFullName_TCL_DECLARED
+#define Tcl_GetCommandFullName_TCL_DECLARED
+/* 517 */
+EXTERN void		Tcl_GetCommandFullName(Tcl_Interp *interp,
+				Tcl_Command command, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_FSEvalFileEx_TCL_DECLARED
+#define Tcl_FSEvalFileEx_TCL_DECLARED
+/* 518 */
+EXTERN int		Tcl_FSEvalFileEx(Tcl_Interp *interp,
+				Tcl_Obj *fileName, CONST char *encodingName);
+#endif
+#ifndef Tcl_SetExitProc_TCL_DECLARED
+#define Tcl_SetExitProc_TCL_DECLARED
+/* 519 */
+EXTERN Tcl_ExitProc *	Tcl_SetExitProc(Tcl_ExitProc *proc);
+#endif
+#ifndef Tcl_LimitAddHandler_TCL_DECLARED
+#define Tcl_LimitAddHandler_TCL_DECLARED
+/* 520 */
+EXTERN void		Tcl_LimitAddHandler(Tcl_Interp *interp, int type,
+				Tcl_LimitHandlerProc *handlerProc,
+				ClientData clientData,
+				Tcl_LimitHandlerDeleteProc *deleteProc);
+#endif
+#ifndef Tcl_LimitRemoveHandler_TCL_DECLARED
+#define Tcl_LimitRemoveHandler_TCL_DECLARED
+/* 521 */
+EXTERN void		Tcl_LimitRemoveHandler(Tcl_Interp *interp, int type,
+				Tcl_LimitHandlerProc *handlerProc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_LimitReady_TCL_DECLARED
+#define Tcl_LimitReady_TCL_DECLARED
+/* 522 */
+EXTERN int		Tcl_LimitReady(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_LimitCheck_TCL_DECLARED
+#define Tcl_LimitCheck_TCL_DECLARED
+/* 523 */
+EXTERN int		Tcl_LimitCheck(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_LimitExceeded_TCL_DECLARED
+#define Tcl_LimitExceeded_TCL_DECLARED
+/* 524 */
+EXTERN int		Tcl_LimitExceeded(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_LimitSetCommands_TCL_DECLARED
+#define Tcl_LimitSetCommands_TCL_DECLARED
+/* 525 */
+EXTERN void		Tcl_LimitSetCommands(Tcl_Interp *interp,
+				int commandLimit);
+#endif
+#ifndef Tcl_LimitSetTime_TCL_DECLARED
+#define Tcl_LimitSetTime_TCL_DECLARED
+/* 526 */
+EXTERN void		Tcl_LimitSetTime(Tcl_Interp *interp,
+				Tcl_Time *timeLimitPtr);
+#endif
+#ifndef Tcl_LimitSetGranularity_TCL_DECLARED
+#define Tcl_LimitSetGranularity_TCL_DECLARED
+/* 527 */
+EXTERN void		Tcl_LimitSetGranularity(Tcl_Interp *interp, int type,
+				int granularity);
+#endif
+#ifndef Tcl_LimitTypeEnabled_TCL_DECLARED
+#define Tcl_LimitTypeEnabled_TCL_DECLARED
+/* 528 */
+EXTERN int		Tcl_LimitTypeEnabled(Tcl_Interp *interp, int type);
+#endif
+#ifndef Tcl_LimitTypeExceeded_TCL_DECLARED
+#define Tcl_LimitTypeExceeded_TCL_DECLARED
+/* 529 */
+EXTERN int		Tcl_LimitTypeExceeded(Tcl_Interp *interp, int type);
+#endif
+#ifndef Tcl_LimitTypeSet_TCL_DECLARED
+#define Tcl_LimitTypeSet_TCL_DECLARED
+/* 530 */
+EXTERN void		Tcl_LimitTypeSet(Tcl_Interp *interp, int type);
+#endif
+#ifndef Tcl_LimitTypeReset_TCL_DECLARED
+#define Tcl_LimitTypeReset_TCL_DECLARED
+/* 531 */
+EXTERN void		Tcl_LimitTypeReset(Tcl_Interp *interp, int type);
+#endif
+#ifndef Tcl_LimitGetCommands_TCL_DECLARED
+#define Tcl_LimitGetCommands_TCL_DECLARED
+/* 532 */
+EXTERN int		Tcl_LimitGetCommands(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_LimitGetTime_TCL_DECLARED
+#define Tcl_LimitGetTime_TCL_DECLARED
+/* 533 */
+EXTERN void		Tcl_LimitGetTime(Tcl_Interp *interp,
+				Tcl_Time *timeLimitPtr);
+#endif
+#ifndef Tcl_LimitGetGranularity_TCL_DECLARED
+#define Tcl_LimitGetGranularity_TCL_DECLARED
+/* 534 */
+EXTERN int		Tcl_LimitGetGranularity(Tcl_Interp *interp, int type);
+#endif
+#ifndef Tcl_SaveInterpState_TCL_DECLARED
+#define Tcl_SaveInterpState_TCL_DECLARED
+/* 535 */
+EXTERN Tcl_InterpState	Tcl_SaveInterpState(Tcl_Interp *interp, int status);
+#endif
+#ifndef Tcl_RestoreInterpState_TCL_DECLARED
+#define Tcl_RestoreInterpState_TCL_DECLARED
+/* 536 */
+EXTERN int		Tcl_RestoreInterpState(Tcl_Interp *interp,
+				Tcl_InterpState state);
+#endif
+#ifndef Tcl_DiscardInterpState_TCL_DECLARED
+#define Tcl_DiscardInterpState_TCL_DECLARED
+/* 537 */
+EXTERN void		Tcl_DiscardInterpState(Tcl_InterpState state);
+#endif
+#ifndef Tcl_SetReturnOptions_TCL_DECLARED
+#define Tcl_SetReturnOptions_TCL_DECLARED
+/* 538 */
+EXTERN int		Tcl_SetReturnOptions(Tcl_Interp *interp,
+				Tcl_Obj *options);
+#endif
+#ifndef Tcl_GetReturnOptions_TCL_DECLARED
+#define Tcl_GetReturnOptions_TCL_DECLARED
+/* 539 */
+EXTERN Tcl_Obj *	Tcl_GetReturnOptions(Tcl_Interp *interp, int result);
+#endif
+#ifndef Tcl_IsEnsemble_TCL_DECLARED
+#define Tcl_IsEnsemble_TCL_DECLARED
+/* 540 */
+EXTERN int		Tcl_IsEnsemble(Tcl_Command token);
+#endif
+#ifndef Tcl_CreateEnsemble_TCL_DECLARED
+#define Tcl_CreateEnsemble_TCL_DECLARED
+/* 541 */
+EXTERN Tcl_Command	Tcl_CreateEnsemble(Tcl_Interp *interp,
+				CONST char *name,
+				Tcl_Namespace *namespacePtr, int flags);
+#endif
+#ifndef Tcl_FindEnsemble_TCL_DECLARED
+#define Tcl_FindEnsemble_TCL_DECLARED
+/* 542 */
+EXTERN Tcl_Command	Tcl_FindEnsemble(Tcl_Interp *interp,
+				Tcl_Obj *cmdNameObj, int flags);
+#endif
+#ifndef Tcl_SetEnsembleSubcommandList_TCL_DECLARED
+#define Tcl_SetEnsembleSubcommandList_TCL_DECLARED
+/* 543 */
+EXTERN int		Tcl_SetEnsembleSubcommandList(Tcl_Interp *interp,
+				Tcl_Command token, Tcl_Obj *subcmdList);
+#endif
+#ifndef Tcl_SetEnsembleMappingDict_TCL_DECLARED
+#define Tcl_SetEnsembleMappingDict_TCL_DECLARED
+/* 544 */
+EXTERN int		Tcl_SetEnsembleMappingDict(Tcl_Interp *interp,
+				Tcl_Command token, Tcl_Obj *mapDict);
+#endif
+#ifndef Tcl_SetEnsembleUnknownHandler_TCL_DECLARED
+#define Tcl_SetEnsembleUnknownHandler_TCL_DECLARED
+/* 545 */
+EXTERN int		Tcl_SetEnsembleUnknownHandler(Tcl_Interp *interp,
+				Tcl_Command token, Tcl_Obj *unknownList);
+#endif
+#ifndef Tcl_SetEnsembleFlags_TCL_DECLARED
+#define Tcl_SetEnsembleFlags_TCL_DECLARED
+/* 546 */
+EXTERN int		Tcl_SetEnsembleFlags(Tcl_Interp *interp,
+				Tcl_Command token, int flags);
+#endif
+#ifndef Tcl_GetEnsembleSubcommandList_TCL_DECLARED
+#define Tcl_GetEnsembleSubcommandList_TCL_DECLARED
+/* 547 */
+EXTERN int		Tcl_GetEnsembleSubcommandList(Tcl_Interp *interp,
+				Tcl_Command token, Tcl_Obj **subcmdListPtr);
+#endif
+#ifndef Tcl_GetEnsembleMappingDict_TCL_DECLARED
+#define Tcl_GetEnsembleMappingDict_TCL_DECLARED
+/* 548 */
+EXTERN int		Tcl_GetEnsembleMappingDict(Tcl_Interp *interp,
+				Tcl_Command token, Tcl_Obj **mapDictPtr);
+#endif
+#ifndef Tcl_GetEnsembleUnknownHandler_TCL_DECLARED
+#define Tcl_GetEnsembleUnknownHandler_TCL_DECLARED
+/* 549 */
+EXTERN int		Tcl_GetEnsembleUnknownHandler(Tcl_Interp *interp,
+				Tcl_Command token, Tcl_Obj **unknownListPtr);
+#endif
+#ifndef Tcl_GetEnsembleFlags_TCL_DECLARED
+#define Tcl_GetEnsembleFlags_TCL_DECLARED
+/* 550 */
+EXTERN int		Tcl_GetEnsembleFlags(Tcl_Interp *interp,
+				Tcl_Command token, int *flagsPtr);
+#endif
+#ifndef Tcl_GetEnsembleNamespace_TCL_DECLARED
+#define Tcl_GetEnsembleNamespace_TCL_DECLARED
+/* 551 */
+EXTERN int		Tcl_GetEnsembleNamespace(Tcl_Interp *interp,
+				Tcl_Command token,
+				Tcl_Namespace **namespacePtrPtr);
+#endif
+#ifndef Tcl_SetTimeProc_TCL_DECLARED
+#define Tcl_SetTimeProc_TCL_DECLARED
+/* 552 */
+EXTERN void		Tcl_SetTimeProc(Tcl_GetTimeProc *getProc,
+				Tcl_ScaleTimeProc *scaleProc,
+				ClientData clientData);
+#endif
+#ifndef Tcl_QueryTimeProc_TCL_DECLARED
+#define Tcl_QueryTimeProc_TCL_DECLARED
+/* 553 */
+EXTERN void		Tcl_QueryTimeProc(Tcl_GetTimeProc **getProc,
+				Tcl_ScaleTimeProc **scaleProc,
+				ClientData *clientData);
+#endif
+#ifndef Tcl_ChannelThreadActionProc_TCL_DECLARED
+#define Tcl_ChannelThreadActionProc_TCL_DECLARED
 /* 554 */
-EXTERN Tcl_DriverThreadActionProc * Tcl_ChannelThreadActionProc _ANSI_ARGS_((
-				Tcl_ChannelType *chanTypePtr));
-/* Slot 555 is reserved */
-/* Slot 556 is reserved */
-/* Slot 557 is reserved */
-/* Slot 558 is reserved */
-/* Slot 559 is reserved */
-/* Slot 560 is reserved */
-/* Slot 561 is reserved */
-/* Slot 562 is reserved */
-/* Slot 563 is reserved */
-/* Slot 564 is reserved */
-/* Slot 565 is reserved */
-/* Slot 566 is reserved */
-/* Slot 567 is reserved */
-/* Slot 568 is reserved */
-/* Slot 569 is reserved */
-/* Slot 570 is reserved */
-/* Slot 571 is reserved */
-/* Slot 572 is reserved */
+EXTERN Tcl_DriverThreadActionProc * Tcl_ChannelThreadActionProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_NewBignumObj_TCL_DECLARED
+#define Tcl_NewBignumObj_TCL_DECLARED
+/* 555 */
+EXTERN Tcl_Obj *	Tcl_NewBignumObj(mp_int *value);
+#endif
+#ifndef Tcl_DbNewBignumObj_TCL_DECLARED
+#define Tcl_DbNewBignumObj_TCL_DECLARED
+/* 556 */
+EXTERN Tcl_Obj *	Tcl_DbNewBignumObj(mp_int *value, CONST char *file,
+				int line);
+#endif
+#ifndef Tcl_SetBignumObj_TCL_DECLARED
+#define Tcl_SetBignumObj_TCL_DECLARED
+/* 557 */
+EXTERN void		Tcl_SetBignumObj(Tcl_Obj *obj, mp_int *value);
+#endif
+#ifndef Tcl_GetBignumFromObj_TCL_DECLARED
+#define Tcl_GetBignumFromObj_TCL_DECLARED
+/* 558 */
+EXTERN int		Tcl_GetBignumFromObj(Tcl_Interp *interp,
+				Tcl_Obj *obj, mp_int *value);
+#endif
+#ifndef Tcl_TakeBignumFromObj_TCL_DECLARED
+#define Tcl_TakeBignumFromObj_TCL_DECLARED
+/* 559 */
+EXTERN int		Tcl_TakeBignumFromObj(Tcl_Interp *interp,
+				Tcl_Obj *obj, mp_int *value);
+#endif
+#ifndef Tcl_TruncateChannel_TCL_DECLARED
+#define Tcl_TruncateChannel_TCL_DECLARED
+/* 560 */
+EXTERN int		Tcl_TruncateChannel(Tcl_Channel chan,
+				Tcl_WideInt length);
+#endif
+#ifndef Tcl_ChannelTruncateProc_TCL_DECLARED
+#define Tcl_ChannelTruncateProc_TCL_DECLARED
+/* 561 */
+EXTERN Tcl_DriverTruncateProc * Tcl_ChannelTruncateProc(
+				CONST Tcl_ChannelType *chanTypePtr);
+#endif
+#ifndef Tcl_SetChannelErrorInterp_TCL_DECLARED
+#define Tcl_SetChannelErrorInterp_TCL_DECLARED
+/* 562 */
+EXTERN void		Tcl_SetChannelErrorInterp(Tcl_Interp *interp,
+				Tcl_Obj *msg);
+#endif
+#ifndef Tcl_GetChannelErrorInterp_TCL_DECLARED
+#define Tcl_GetChannelErrorInterp_TCL_DECLARED
+/* 563 */
+EXTERN void		Tcl_GetChannelErrorInterp(Tcl_Interp *interp,
+				Tcl_Obj **msg);
+#endif
+#ifndef Tcl_SetChannelError_TCL_DECLARED
+#define Tcl_SetChannelError_TCL_DECLARED
+/* 564 */
+EXTERN void		Tcl_SetChannelError(Tcl_Channel chan, Tcl_Obj *msg);
+#endif
+#ifndef Tcl_GetChannelError_TCL_DECLARED
+#define Tcl_GetChannelError_TCL_DECLARED
+/* 565 */
+EXTERN void		Tcl_GetChannelError(Tcl_Channel chan, Tcl_Obj **msg);
+#endif
+#ifndef Tcl_InitBignumFromDouble_TCL_DECLARED
+#define Tcl_InitBignumFromDouble_TCL_DECLARED
+/* 566 */
+EXTERN int		Tcl_InitBignumFromDouble(Tcl_Interp *interp,
+				double initval, mp_int *toInit);
+#endif
+#ifndef Tcl_GetNamespaceUnknownHandler_TCL_DECLARED
+#define Tcl_GetNamespaceUnknownHandler_TCL_DECLARED
+/* 567 */
+EXTERN Tcl_Obj *	Tcl_GetNamespaceUnknownHandler(Tcl_Interp *interp,
+				Tcl_Namespace *nsPtr);
+#endif
+#ifndef Tcl_SetNamespaceUnknownHandler_TCL_DECLARED
+#define Tcl_SetNamespaceUnknownHandler_TCL_DECLARED
+/* 568 */
+EXTERN int		Tcl_SetNamespaceUnknownHandler(Tcl_Interp *interp,
+				Tcl_Namespace *nsPtr, Tcl_Obj *handlerPtr);
+#endif
+#ifndef Tcl_GetEncodingFromObj_TCL_DECLARED
+#define Tcl_GetEncodingFromObj_TCL_DECLARED
+/* 569 */
+EXTERN int		Tcl_GetEncodingFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, Tcl_Encoding *encodingPtr);
+#endif
+#ifndef Tcl_GetEncodingSearchPath_TCL_DECLARED
+#define Tcl_GetEncodingSearchPath_TCL_DECLARED
+/* 570 */
+EXTERN Tcl_Obj *	Tcl_GetEncodingSearchPath(void);
+#endif
+#ifndef Tcl_SetEncodingSearchPath_TCL_DECLARED
+#define Tcl_SetEncodingSearchPath_TCL_DECLARED
+/* 571 */
+EXTERN int		Tcl_SetEncodingSearchPath(Tcl_Obj *searchPath);
+#endif
+#ifndef Tcl_GetEncodingNameFromEnvironment_TCL_DECLARED
+#define Tcl_GetEncodingNameFromEnvironment_TCL_DECLARED
+/* 572 */
+EXTERN CONST char *	Tcl_GetEncodingNameFromEnvironment(
+				Tcl_DString *bufPtr);
+#endif
+#ifndef Tcl_PkgRequireProc_TCL_DECLARED
+#define Tcl_PkgRequireProc_TCL_DECLARED
 /* 573 */
-EXTERN int		Tcl_PkgRequireProc _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_PkgRequireProc(Tcl_Interp *interp,
 				CONST char *name, int objc,
 				Tcl_Obj *CONST objv[],
-				ClientData *clientDataPtr));
-/* Slot 574 is reserved */
-/* Slot 575 is reserved */
-/* Slot 576 is reserved */
-/* Slot 577 is reserved */
-/* Slot 578 is reserved */
-/* Slot 579 is reserved */
+				ClientData *clientDataPtr);
+#endif
+#ifndef Tcl_AppendObjToErrorInfo_TCL_DECLARED
+#define Tcl_AppendObjToErrorInfo_TCL_DECLARED
+/* 574 */
+EXTERN void		Tcl_AppendObjToErrorInfo(Tcl_Interp *interp,
+				Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_AppendLimitedToObj_TCL_DECLARED
+#define Tcl_AppendLimitedToObj_TCL_DECLARED
+/* 575 */
+EXTERN void		Tcl_AppendLimitedToObj(Tcl_Obj *objPtr,
+				CONST char *bytes, int length, int limit,
+				CONST char *ellipsis);
+#endif
+#ifndef Tcl_Format_TCL_DECLARED
+#define Tcl_Format_TCL_DECLARED
+/* 576 */
+EXTERN Tcl_Obj *	Tcl_Format(Tcl_Interp *interp, CONST char *format,
+				int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_AppendFormatToObj_TCL_DECLARED
+#define Tcl_AppendFormatToObj_TCL_DECLARED
+/* 577 */
+EXTERN int		Tcl_AppendFormatToObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, CONST char *format,
+				int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef Tcl_ObjPrintf_TCL_DECLARED
+#define Tcl_ObjPrintf_TCL_DECLARED
+/* 578 */
+EXTERN Tcl_Obj *	Tcl_ObjPrintf(CONST char *format, ...);
+#endif
+#ifndef Tcl_AppendPrintfToObj_TCL_DECLARED
+#define Tcl_AppendPrintfToObj_TCL_DECLARED
+/* 579 */
+EXTERN void		Tcl_AppendPrintfToObj(Tcl_Obj *objPtr,
+				CONST char *format, ...);
+#endif
 /* Slot 580 is reserved */
 /* Slot 581 is reserved */
 /* Slot 582 is reserved */
@@ -1685,8 +3458,11 @@ EXTERN int		Tcl_PkgRequireProc _ANSI_ARGS_((Tcl_Interp *interp,
 /* Slot 627 is reserved */
 /* Slot 628 is reserved */
 /* Slot 629 is reserved */
+#ifndef TclUnusedStubEntry_TCL_DECLARED
+#define TclUnusedStubEntry_TCL_DECLARED
 /* 630 */
-EXTERN void		TclUnusedStubEntry _ANSI_ARGS_((void));
+EXTERN void		TclUnusedStubEntry(void);
+#endif
 
 typedef struct TclStubHooks {
     struct TclPlatStubs *tclPlatStubs;
@@ -1698,610 +3474,610 @@ typedef struct TclStubs {
     int magic;
     struct TclStubHooks *hooks;
 
-    int (*tcl_PkgProvideEx) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, CONST char *version, ClientData clientData)); /* 0 */
-    CONST84_RETURN char * (*tcl_PkgRequireEx) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, CONST char *version, int exact, ClientData *clientDataPtr)); /* 1 */
-    void (*tcl_Panic) _ANSI_ARGS_((CONST char *format, ...)); /* 2 */
-    char * (*tcl_Alloc) _ANSI_ARGS_((unsigned int size)); /* 3 */
-    void (*tcl_Free) _ANSI_ARGS_((char *ptr)); /* 4 */
-    char * (*tcl_Realloc) _ANSI_ARGS_((char *ptr, unsigned int size)); /* 5 */
-    char * (*tcl_DbCkalloc) _ANSI_ARGS_((unsigned int size, CONST char *file, int line)); /* 6 */
-    void (*tcl_DbCkfree) _ANSI_ARGS_((char *ptr, CONST char *file, int line)); /* 7 */
-    char * (*tcl_DbCkrealloc) _ANSI_ARGS_((char *ptr, unsigned int size, CONST char *file, int line)); /* 8 */
+    int (*tcl_PkgProvideEx) (Tcl_Interp *interp, CONST char *name, CONST char *version, ClientData clientData); /* 0 */
+    CONST84_RETURN char * (*tcl_PkgRequireEx) (Tcl_Interp *interp, CONST char *name, CONST char *version, int exact, ClientData *clientDataPtr); /* 1 */
+    void (*tcl_Panic) (CONST char *format, ...); /* 2 */
+    char * (*tcl_Alloc) (unsigned int size); /* 3 */
+    void (*tcl_Free) (char *ptr); /* 4 */
+    char * (*tcl_Realloc) (char *ptr, unsigned int size); /* 5 */
+    char * (*tcl_DbCkalloc) (unsigned int size, CONST char *file, int line); /* 6 */
+    void (*tcl_DbCkfree) (char *ptr, CONST char *file, int line); /* 7 */
+    char * (*tcl_DbCkrealloc) (char *ptr, unsigned int size, CONST char *file, int line); /* 8 */
 #if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
-    void (*tcl_CreateFileHandler) _ANSI_ARGS_((int fd, int mask, Tcl_FileProc *proc, ClientData clientData)); /* 9 */
+    void (*tcl_CreateFileHandler) (int fd, int mask, Tcl_FileProc *proc, ClientData clientData); /* 9 */
 #endif /* UNIX */
 #if defined(__WIN32__) /* WIN */
     VOID *reserved9;
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
-    void (*tcl_CreateFileHandler) _ANSI_ARGS_((int fd, int mask, Tcl_FileProc *proc, ClientData clientData)); /* 9 */
+    void (*tcl_CreateFileHandler) (int fd, int mask, Tcl_FileProc *proc, ClientData clientData); /* 9 */
 #endif /* MACOSX */
 #if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
-    void (*tcl_DeleteFileHandler) _ANSI_ARGS_((int fd)); /* 10 */
+    void (*tcl_DeleteFileHandler) (int fd); /* 10 */
 #endif /* UNIX */
 #if defined(__WIN32__) /* WIN */
     VOID *reserved10;
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
-    void (*tcl_DeleteFileHandler) _ANSI_ARGS_((int fd)); /* 10 */
+    void (*tcl_DeleteFileHandler) (int fd); /* 10 */
 #endif /* MACOSX */
-    void (*tcl_SetTimer) _ANSI_ARGS_((Tcl_Time *timePtr)); /* 11 */
-    void (*tcl_Sleep) _ANSI_ARGS_((int ms)); /* 12 */
-    int (*tcl_WaitForEvent) _ANSI_ARGS_((Tcl_Time *timePtr)); /* 13 */
-    int (*tcl_AppendAllObjTypes) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr)); /* 14 */
-    void (*tcl_AppendStringsToObj) _ANSI_ARGS_((Tcl_Obj *objPtr, ...)); /* 15 */
-    void (*tcl_AppendToObj) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST char *bytes, int length)); /* 16 */
-    Tcl_Obj * (*tcl_ConcatObj) _ANSI_ARGS_((int objc, Tcl_Obj *CONST objv[])); /* 17 */
-    int (*tcl_ConvertToType) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_ObjType *typePtr)); /* 18 */
-    void (*tcl_DbDecrRefCount) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST char *file, int line)); /* 19 */
-    void (*tcl_DbIncrRefCount) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST char *file, int line)); /* 20 */
-    int (*tcl_DbIsShared) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST char *file, int line)); /* 21 */
-    Tcl_Obj * (*tcl_DbNewBooleanObj) _ANSI_ARGS_((int boolValue, CONST char *file, int line)); /* 22 */
-    Tcl_Obj * (*tcl_DbNewByteArrayObj) _ANSI_ARGS_((CONST unsigned char *bytes, int length, CONST char *file, int line)); /* 23 */
-    Tcl_Obj * (*tcl_DbNewDoubleObj) _ANSI_ARGS_((double doubleValue, CONST char *file, int line)); /* 24 */
-    Tcl_Obj * (*tcl_DbNewListObj) _ANSI_ARGS_((int objc, Tcl_Obj *CONST *objv, CONST char *file, int line)); /* 25 */
-    Tcl_Obj * (*tcl_DbNewLongObj) _ANSI_ARGS_((long longValue, CONST char *file, int line)); /* 26 */
-    Tcl_Obj * (*tcl_DbNewObj) _ANSI_ARGS_((CONST char *file, int line)); /* 27 */
-    Tcl_Obj * (*tcl_DbNewStringObj) _ANSI_ARGS_((CONST char *bytes, int length, CONST char *file, int line)); /* 28 */
-    Tcl_Obj * (*tcl_DuplicateObj) _ANSI_ARGS_((Tcl_Obj *objPtr)); /* 29 */
-    void (*tclFreeObj) _ANSI_ARGS_((Tcl_Obj *objPtr)); /* 30 */
-    int (*tcl_GetBoolean) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *src, int *boolPtr)); /* 31 */
-    int (*tcl_GetBooleanFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, int *boolPtr)); /* 32 */
-    unsigned char * (*tcl_GetByteArrayFromObj) _ANSI_ARGS_((Tcl_Obj *objPtr, int *lengthPtr)); /* 33 */
-    int (*tcl_GetDouble) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *src, double *doublePtr)); /* 34 */
-    int (*tcl_GetDoubleFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, double *doublePtr)); /* 35 */
-    int (*tcl_GetIndexFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, CONST84 char **tablePtr, CONST char *msg, int flags, int *indexPtr)); /* 36 */
-    int (*tcl_GetInt) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *src, int *intPtr)); /* 37 */
-    int (*tcl_GetIntFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, int *intPtr)); /* 38 */
-    int (*tcl_GetLongFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, long *longPtr)); /* 39 */
-    Tcl_ObjType * (*tcl_GetObjType) _ANSI_ARGS_((CONST char *typeName)); /* 40 */
-    char * (*tcl_GetStringFromObj) _ANSI_ARGS_((Tcl_Obj *objPtr, int *lengthPtr)); /* 41 */
-    void (*tcl_InvalidateStringRep) _ANSI_ARGS_((Tcl_Obj *objPtr)); /* 42 */
-    int (*tcl_ListObjAppendList) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, Tcl_Obj *elemListPtr)); /* 43 */
-    int (*tcl_ListObjAppendElement) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, Tcl_Obj *objPtr)); /* 44 */
-    int (*tcl_ListObjGetElements) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, int *objcPtr, Tcl_Obj ***objvPtr)); /* 45 */
-    int (*tcl_ListObjIndex) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, int index, Tcl_Obj **objPtrPtr)); /* 46 */
-    int (*tcl_ListObjLength) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, int *lengthPtr)); /* 47 */
-    int (*tcl_ListObjReplace) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, int first, int count, int objc, Tcl_Obj *CONST objv[])); /* 48 */
-    Tcl_Obj * (*tcl_NewBooleanObj) _ANSI_ARGS_((int boolValue)); /* 49 */
-    Tcl_Obj * (*tcl_NewByteArrayObj) _ANSI_ARGS_((CONST unsigned char *bytes, int length)); /* 50 */
-    Tcl_Obj * (*tcl_NewDoubleObj) _ANSI_ARGS_((double doubleValue)); /* 51 */
-    Tcl_Obj * (*tcl_NewIntObj) _ANSI_ARGS_((int intValue)); /* 52 */
-    Tcl_Obj * (*tcl_NewListObj) _ANSI_ARGS_((int objc, Tcl_Obj *CONST objv[])); /* 53 */
-    Tcl_Obj * (*tcl_NewLongObj) _ANSI_ARGS_((long longValue)); /* 54 */
-    Tcl_Obj * (*tcl_NewObj) _ANSI_ARGS_((void)); /* 55 */
-    Tcl_Obj * (*tcl_NewStringObj) _ANSI_ARGS_((CONST char *bytes, int length)); /* 56 */
-    void (*tcl_SetBooleanObj) _ANSI_ARGS_((Tcl_Obj *objPtr, int boolValue)); /* 57 */
-    unsigned char * (*tcl_SetByteArrayLength) _ANSI_ARGS_((Tcl_Obj *objPtr, int length)); /* 58 */
-    void (*tcl_SetByteArrayObj) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST unsigned char *bytes, int length)); /* 59 */
-    void (*tcl_SetDoubleObj) _ANSI_ARGS_((Tcl_Obj *objPtr, double doubleValue)); /* 60 */
-    void (*tcl_SetIntObj) _ANSI_ARGS_((Tcl_Obj *objPtr, int intValue)); /* 61 */
-    void (*tcl_SetListObj) _ANSI_ARGS_((Tcl_Obj *objPtr, int objc, Tcl_Obj *CONST objv[])); /* 62 */
-    void (*tcl_SetLongObj) _ANSI_ARGS_((Tcl_Obj *objPtr, long longValue)); /* 63 */
-    void (*tcl_SetObjLength) _ANSI_ARGS_((Tcl_Obj *objPtr, int length)); /* 64 */
-    void (*tcl_SetStringObj) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST char *bytes, int length)); /* 65 */
-    void (*tcl_AddErrorInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *message)); /* 66 */
-    void (*tcl_AddObjErrorInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *message, int length)); /* 67 */
-    void (*tcl_AllowExceptions) _ANSI_ARGS_((Tcl_Interp *interp)); /* 68 */
-    void (*tcl_AppendElement) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *element)); /* 69 */
-    void (*tcl_AppendResult) _ANSI_ARGS_((Tcl_Interp *interp, ...)); /* 70 */
-    Tcl_AsyncHandler (*tcl_AsyncCreate) _ANSI_ARGS_((Tcl_AsyncProc *proc, ClientData clientData)); /* 71 */
-    void (*tcl_AsyncDelete) _ANSI_ARGS_((Tcl_AsyncHandler async)); /* 72 */
-    int (*tcl_AsyncInvoke) _ANSI_ARGS_((Tcl_Interp *interp, int code)); /* 73 */
-    void (*tcl_AsyncMark) _ANSI_ARGS_((Tcl_AsyncHandler async)); /* 74 */
-    int (*tcl_AsyncReady) _ANSI_ARGS_((void)); /* 75 */
-    void (*tcl_BackgroundError) _ANSI_ARGS_((Tcl_Interp *interp)); /* 76 */
-    char (*tcl_Backslash) _ANSI_ARGS_((CONST char *src, int *readPtr)); /* 77 */
-    int (*tcl_BadChannelOption) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *optionName, CONST char *optionList)); /* 78 */
-    void (*tcl_CallWhenDeleted) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_InterpDeleteProc *proc, ClientData clientData)); /* 79 */
-    void (*tcl_CancelIdleCall) _ANSI_ARGS_((Tcl_IdleProc *idleProc, ClientData clientData)); /* 80 */
-    int (*tcl_Close) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 81 */
-    int (*tcl_CommandComplete) _ANSI_ARGS_((CONST char *cmd)); /* 82 */
-    char * (*tcl_Concat) _ANSI_ARGS_((int argc, CONST84 char *CONST *argv)); /* 83 */
-    int (*tcl_ConvertElement) _ANSI_ARGS_((CONST char *src, char *dst, int flags)); /* 84 */
-    int (*tcl_ConvertCountedElement) _ANSI_ARGS_((CONST char *src, int length, char *dst, int flags)); /* 85 */
-    int (*tcl_CreateAlias) _ANSI_ARGS_((Tcl_Interp *slave, CONST char *slaveCmd, Tcl_Interp *target, CONST char *targetCmd, int argc, CONST84 char *CONST *argv)); /* 86 */
-    int (*tcl_CreateAliasObj) _ANSI_ARGS_((Tcl_Interp *slave, CONST char *slaveCmd, Tcl_Interp *target, CONST char *targetCmd, int objc, Tcl_Obj *CONST objv[])); /* 87 */
-    Tcl_Channel (*tcl_CreateChannel) _ANSI_ARGS_((Tcl_ChannelType *typePtr, CONST char *chanName, ClientData instanceData, int mask)); /* 88 */
-    void (*tcl_CreateChannelHandler) _ANSI_ARGS_((Tcl_Channel chan, int mask, Tcl_ChannelProc *proc, ClientData clientData)); /* 89 */
-    void (*tcl_CreateCloseHandler) _ANSI_ARGS_((Tcl_Channel chan, Tcl_CloseProc *proc, ClientData clientData)); /* 90 */
-    Tcl_Command (*tcl_CreateCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmdName, Tcl_CmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc)); /* 91 */
-    void (*tcl_CreateEventSource) _ANSI_ARGS_((Tcl_EventSetupProc *setupProc, Tcl_EventCheckProc *checkProc, ClientData clientData)); /* 92 */
-    void (*tcl_CreateExitHandler) _ANSI_ARGS_((Tcl_ExitProc *proc, ClientData clientData)); /* 93 */
-    Tcl_Interp * (*tcl_CreateInterp) _ANSI_ARGS_((void)); /* 94 */
-    void (*tcl_CreateMathFunc) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, int numArgs, Tcl_ValueType *argTypes, Tcl_MathProc *proc, ClientData clientData)); /* 95 */
-    Tcl_Command (*tcl_CreateObjCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmdName, Tcl_ObjCmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc)); /* 96 */
-    Tcl_Interp * (*tcl_CreateSlave) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *slaveName, int isSafe)); /* 97 */
-    Tcl_TimerToken (*tcl_CreateTimerHandler) _ANSI_ARGS_((int milliseconds, Tcl_TimerProc *proc, ClientData clientData)); /* 98 */
-    Tcl_Trace (*tcl_CreateTrace) _ANSI_ARGS_((Tcl_Interp *interp, int level, Tcl_CmdTraceProc *proc, ClientData clientData)); /* 99 */
-    void (*tcl_DeleteAssocData) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name)); /* 100 */
-    void (*tcl_DeleteChannelHandler) _ANSI_ARGS_((Tcl_Channel chan, Tcl_ChannelProc *proc, ClientData clientData)); /* 101 */
-    void (*tcl_DeleteCloseHandler) _ANSI_ARGS_((Tcl_Channel chan, Tcl_CloseProc *proc, ClientData clientData)); /* 102 */
-    int (*tcl_DeleteCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmdName)); /* 103 */
-    int (*tcl_DeleteCommandFromToken) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Command command)); /* 104 */
-    void (*tcl_DeleteEvents) _ANSI_ARGS_((Tcl_EventDeleteProc *proc, ClientData clientData)); /* 105 */
-    void (*tcl_DeleteEventSource) _ANSI_ARGS_((Tcl_EventSetupProc *setupProc, Tcl_EventCheckProc *checkProc, ClientData clientData)); /* 106 */
-    void (*tcl_DeleteExitHandler) _ANSI_ARGS_((Tcl_ExitProc *proc, ClientData clientData)); /* 107 */
-    void (*tcl_DeleteHashEntry) _ANSI_ARGS_((Tcl_HashEntry *entryPtr)); /* 108 */
-    void (*tcl_DeleteHashTable) _ANSI_ARGS_((Tcl_HashTable *tablePtr)); /* 109 */
-    void (*tcl_DeleteInterp) _ANSI_ARGS_((Tcl_Interp *interp)); /* 110 */
-    void (*tcl_DetachPids) _ANSI_ARGS_((int numPids, Tcl_Pid *pidPtr)); /* 111 */
-    void (*tcl_DeleteTimerHandler) _ANSI_ARGS_((Tcl_TimerToken token)); /* 112 */
-    void (*tcl_DeleteTrace) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Trace trace)); /* 113 */
-    void (*tcl_DontCallWhenDeleted) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_InterpDeleteProc *proc, ClientData clientData)); /* 114 */
-    int (*tcl_DoOneEvent) _ANSI_ARGS_((int flags)); /* 115 */
-    void (*tcl_DoWhenIdle) _ANSI_ARGS_((Tcl_IdleProc *proc, ClientData clientData)); /* 116 */
-    char * (*tcl_DStringAppend) _ANSI_ARGS_((Tcl_DString *dsPtr, CONST char *bytes, int length)); /* 117 */
-    char * (*tcl_DStringAppendElement) _ANSI_ARGS_((Tcl_DString *dsPtr, CONST char *element)); /* 118 */
-    void (*tcl_DStringEndSublist) _ANSI_ARGS_((Tcl_DString *dsPtr)); /* 119 */
-    void (*tcl_DStringFree) _ANSI_ARGS_((Tcl_DString *dsPtr)); /* 120 */
-    void (*tcl_DStringGetResult) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_DString *dsPtr)); /* 121 */
-    void (*tcl_DStringInit) _ANSI_ARGS_((Tcl_DString *dsPtr)); /* 122 */
-    void (*tcl_DStringResult) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_DString *dsPtr)); /* 123 */
-    void (*tcl_DStringSetLength) _ANSI_ARGS_((Tcl_DString *dsPtr, int length)); /* 124 */
-    void (*tcl_DStringStartSublist) _ANSI_ARGS_((Tcl_DString *dsPtr)); /* 125 */
-    int (*tcl_Eof) _ANSI_ARGS_((Tcl_Channel chan)); /* 126 */
-    CONST84_RETURN char * (*tcl_ErrnoId) _ANSI_ARGS_((void)); /* 127 */
-    CONST84_RETURN char * (*tcl_ErrnoMsg) _ANSI_ARGS_((int err)); /* 128 */
-    int (*tcl_Eval) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *script)); /* 129 */
-    int (*tcl_EvalFile) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *fileName)); /* 130 */
-    int (*tcl_EvalObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr)); /* 131 */
-    void (*tcl_EventuallyFree) _ANSI_ARGS_((ClientData clientData, Tcl_FreeProc *freeProc)); /* 132 */
-    void (*tcl_Exit) _ANSI_ARGS_((int status)); /* 133 */
-    int (*tcl_ExposeCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *hiddenCmdToken, CONST char *cmdName)); /* 134 */
-    int (*tcl_ExprBoolean) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *expr, int *ptr)); /* 135 */
-    int (*tcl_ExprBooleanObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, int *ptr)); /* 136 */
-    int (*tcl_ExprDouble) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *expr, double *ptr)); /* 137 */
-    int (*tcl_ExprDoubleObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, double *ptr)); /* 138 */
-    int (*tcl_ExprLong) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *expr, long *ptr)); /* 139 */
-    int (*tcl_ExprLongObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, long *ptr)); /* 140 */
-    int (*tcl_ExprObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Obj **resultPtrPtr)); /* 141 */
-    int (*tcl_ExprString) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *expr)); /* 142 */
-    void (*tcl_Finalize) _ANSI_ARGS_((void)); /* 143 */
-    void (*tcl_FindExecutable) _ANSI_ARGS_((CONST char *argv0)); /* 144 */
-    Tcl_HashEntry * (*tcl_FirstHashEntry) _ANSI_ARGS_((Tcl_HashTable *tablePtr, Tcl_HashSearch *searchPtr)); /* 145 */
-    int (*tcl_Flush) _ANSI_ARGS_((Tcl_Channel chan)); /* 146 */
-    void (*tcl_FreeResult) _ANSI_ARGS_((Tcl_Interp *interp)); /* 147 */
-    int (*tcl_GetAlias) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *slaveCmd, Tcl_Interp **targetInterpPtr, CONST84 char **targetCmdPtr, int *argcPtr, CONST84 char ***argvPtr)); /* 148 */
-    int (*tcl_GetAliasObj) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *slaveCmd, Tcl_Interp **targetInterpPtr, CONST84 char **targetCmdPtr, int *objcPtr, Tcl_Obj ***objv)); /* 149 */
-    ClientData (*tcl_GetAssocData) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_InterpDeleteProc **procPtr)); /* 150 */
-    Tcl_Channel (*tcl_GetChannel) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *chanName, int *modePtr)); /* 151 */
-    int (*tcl_GetChannelBufferSize) _ANSI_ARGS_((Tcl_Channel chan)); /* 152 */
-    int (*tcl_GetChannelHandle) _ANSI_ARGS_((Tcl_Channel chan, int direction, ClientData *handlePtr)); /* 153 */
-    ClientData (*tcl_GetChannelInstanceData) _ANSI_ARGS_((Tcl_Channel chan)); /* 154 */
-    int (*tcl_GetChannelMode) _ANSI_ARGS_((Tcl_Channel chan)); /* 155 */
-    CONST84_RETURN char * (*tcl_GetChannelName) _ANSI_ARGS_((Tcl_Channel chan)); /* 156 */
-    int (*tcl_GetChannelOption) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan, CONST char *optionName, Tcl_DString *dsPtr)); /* 157 */
-    Tcl_ChannelType * (*tcl_GetChannelType) _ANSI_ARGS_((Tcl_Channel chan)); /* 158 */
-    int (*tcl_GetCommandInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmdName, Tcl_CmdInfo *infoPtr)); /* 159 */
-    CONST84_RETURN char * (*tcl_GetCommandName) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Command command)); /* 160 */
-    int (*tcl_GetErrno) _ANSI_ARGS_((void)); /* 161 */
-    CONST84_RETURN char * (*tcl_GetHostName) _ANSI_ARGS_((void)); /* 162 */
-    int (*tcl_GetInterpPath) _ANSI_ARGS_((Tcl_Interp *askInterp, Tcl_Interp *slaveInterp)); /* 163 */
-    Tcl_Interp * (*tcl_GetMaster) _ANSI_ARGS_((Tcl_Interp *interp)); /* 164 */
-    CONST char * (*tcl_GetNameOfExecutable) _ANSI_ARGS_((void)); /* 165 */
-    Tcl_Obj * (*tcl_GetObjResult) _ANSI_ARGS_((Tcl_Interp *interp)); /* 166 */
+    void (*tcl_SetTimer) (Tcl_Time *timePtr); /* 11 */
+    void (*tcl_Sleep) (int ms); /* 12 */
+    int (*tcl_WaitForEvent) (Tcl_Time *timePtr); /* 13 */
+    int (*tcl_AppendAllObjTypes) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 14 */
+    void (*tcl_AppendStringsToObj) (Tcl_Obj *objPtr, ...); /* 15 */
+    void (*tcl_AppendToObj) (Tcl_Obj *objPtr, CONST char *bytes, int length); /* 16 */
+    Tcl_Obj * (*tcl_ConcatObj) (int objc, Tcl_Obj *CONST objv[]); /* 17 */
+    int (*tcl_ConvertToType) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_ObjType *typePtr); /* 18 */
+    void (*tcl_DbDecrRefCount) (Tcl_Obj *objPtr, CONST char *file, int line); /* 19 */
+    void (*tcl_DbIncrRefCount) (Tcl_Obj *objPtr, CONST char *file, int line); /* 20 */
+    int (*tcl_DbIsShared) (Tcl_Obj *objPtr, CONST char *file, int line); /* 21 */
+    Tcl_Obj * (*tcl_DbNewBooleanObj) (int boolValue, CONST char *file, int line); /* 22 */
+    Tcl_Obj * (*tcl_DbNewByteArrayObj) (CONST unsigned char *bytes, int length, CONST char *file, int line); /* 23 */
+    Tcl_Obj * (*tcl_DbNewDoubleObj) (double doubleValue, CONST char *file, int line); /* 24 */
+    Tcl_Obj * (*tcl_DbNewListObj) (int objc, Tcl_Obj *CONST *objv, CONST char *file, int line); /* 25 */
+    Tcl_Obj * (*tcl_DbNewLongObj) (long longValue, CONST char *file, int line); /* 26 */
+    Tcl_Obj * (*tcl_DbNewObj) (CONST char *file, int line); /* 27 */
+    Tcl_Obj * (*tcl_DbNewStringObj) (CONST char *bytes, int length, CONST char *file, int line); /* 28 */
+    Tcl_Obj * (*tcl_DuplicateObj) (Tcl_Obj *objPtr); /* 29 */
+    void (*tclFreeObj) (Tcl_Obj *objPtr); /* 30 */
+    int (*tcl_GetBoolean) (Tcl_Interp *interp, CONST char *src, int *boolPtr); /* 31 */
+    int (*tcl_GetBooleanFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int *boolPtr); /* 32 */
+    unsigned char * (*tcl_GetByteArrayFromObj) (Tcl_Obj *objPtr, int *lengthPtr); /* 33 */
+    int (*tcl_GetDouble) (Tcl_Interp *interp, CONST char *src, double *doublePtr); /* 34 */
+    int (*tcl_GetDoubleFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, double *doublePtr); /* 35 */
+    int (*tcl_GetIndexFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, CONST84 char **tablePtr, CONST char *msg, int flags, int *indexPtr); /* 36 */
+    int (*tcl_GetInt) (Tcl_Interp *interp, CONST char *src, int *intPtr); /* 37 */
+    int (*tcl_GetIntFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int *intPtr); /* 38 */
+    int (*tcl_GetLongFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, long *longPtr); /* 39 */
+    Tcl_ObjType * (*tcl_GetObjType) (CONST char *typeName); /* 40 */
+    char * (*tcl_GetStringFromObj) (Tcl_Obj *objPtr, int *lengthPtr); /* 41 */
+    void (*tcl_InvalidateStringRep) (Tcl_Obj *objPtr); /* 42 */
+    int (*tcl_ListObjAppendList) (Tcl_Interp *interp, Tcl_Obj *listPtr, Tcl_Obj *elemListPtr); /* 43 */
+    int (*tcl_ListObjAppendElement) (Tcl_Interp *interp, Tcl_Obj *listPtr, Tcl_Obj *objPtr); /* 44 */
+    int (*tcl_ListObjGetElements) (Tcl_Interp *interp, Tcl_Obj *listPtr, int *objcPtr, Tcl_Obj ***objvPtr); /* 45 */
+    int (*tcl_ListObjIndex) (Tcl_Interp *interp, Tcl_Obj *listPtr, int index, Tcl_Obj **objPtrPtr); /* 46 */
+    int (*tcl_ListObjLength) (Tcl_Interp *interp, Tcl_Obj *listPtr, int *lengthPtr); /* 47 */
+    int (*tcl_ListObjReplace) (Tcl_Interp *interp, Tcl_Obj *listPtr, int first, int count, int objc, Tcl_Obj *CONST objv[]); /* 48 */
+    Tcl_Obj * (*tcl_NewBooleanObj) (int boolValue); /* 49 */
+    Tcl_Obj * (*tcl_NewByteArrayObj) (CONST unsigned char *bytes, int length); /* 50 */
+    Tcl_Obj * (*tcl_NewDoubleObj) (double doubleValue); /* 51 */
+    Tcl_Obj * (*tcl_NewIntObj) (int intValue); /* 52 */
+    Tcl_Obj * (*tcl_NewListObj) (int objc, Tcl_Obj *CONST objv[]); /* 53 */
+    Tcl_Obj * (*tcl_NewLongObj) (long longValue); /* 54 */
+    Tcl_Obj * (*tcl_NewObj) (void); /* 55 */
+    Tcl_Obj * (*tcl_NewStringObj) (CONST char *bytes, int length); /* 56 */
+    void (*tcl_SetBooleanObj) (Tcl_Obj *objPtr, int boolValue); /* 57 */
+    unsigned char * (*tcl_SetByteArrayLength) (Tcl_Obj *objPtr, int length); /* 58 */
+    void (*tcl_SetByteArrayObj) (Tcl_Obj *objPtr, CONST unsigned char *bytes, int length); /* 59 */
+    void (*tcl_SetDoubleObj) (Tcl_Obj *objPtr, double doubleValue); /* 60 */
+    void (*tcl_SetIntObj) (Tcl_Obj *objPtr, int intValue); /* 61 */
+    void (*tcl_SetListObj) (Tcl_Obj *objPtr, int objc, Tcl_Obj *CONST objv[]); /* 62 */
+    void (*tcl_SetLongObj) (Tcl_Obj *objPtr, long longValue); /* 63 */
+    void (*tcl_SetObjLength) (Tcl_Obj *objPtr, int length); /* 64 */
+    void (*tcl_SetStringObj) (Tcl_Obj *objPtr, CONST char *bytes, int length); /* 65 */
+    void (*tcl_AddErrorInfo) (Tcl_Interp *interp, CONST char *message); /* 66 */
+    void (*tcl_AddObjErrorInfo) (Tcl_Interp *interp, CONST char *message, int length); /* 67 */
+    void (*tcl_AllowExceptions) (Tcl_Interp *interp); /* 68 */
+    void (*tcl_AppendElement) (Tcl_Interp *interp, CONST char *element); /* 69 */
+    void (*tcl_AppendResult) (Tcl_Interp *interp, ...); /* 70 */
+    Tcl_AsyncHandler (*tcl_AsyncCreate) (Tcl_AsyncProc *proc, ClientData clientData); /* 71 */
+    void (*tcl_AsyncDelete) (Tcl_AsyncHandler async); /* 72 */
+    int (*tcl_AsyncInvoke) (Tcl_Interp *interp, int code); /* 73 */
+    void (*tcl_AsyncMark) (Tcl_AsyncHandler async); /* 74 */
+    int (*tcl_AsyncReady) (void); /* 75 */
+    void (*tcl_BackgroundError) (Tcl_Interp *interp); /* 76 */
+    char (*tcl_Backslash) (CONST char *src, int *readPtr); /* 77 */
+    int (*tcl_BadChannelOption) (Tcl_Interp *interp, CONST char *optionName, CONST char *optionList); /* 78 */
+    void (*tcl_CallWhenDeleted) (Tcl_Interp *interp, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 79 */
+    void (*tcl_CancelIdleCall) (Tcl_IdleProc *idleProc, ClientData clientData); /* 80 */
+    int (*tcl_Close) (Tcl_Interp *interp, Tcl_Channel chan); /* 81 */
+    int (*tcl_CommandComplete) (CONST char *cmd); /* 82 */
+    char * (*tcl_Concat) (int argc, CONST84 char *CONST *argv); /* 83 */
+    int (*tcl_ConvertElement) (CONST char *src, char *dst, int flags); /* 84 */
+    int (*tcl_ConvertCountedElement) (CONST char *src, int length, char *dst, int flags); /* 85 */
+    int (*tcl_CreateAlias) (Tcl_Interp *slave, CONST char *slaveCmd, Tcl_Interp *target, CONST char *targetCmd, int argc, CONST84 char *CONST *argv); /* 86 */
+    int (*tcl_CreateAliasObj) (Tcl_Interp *slave, CONST char *slaveCmd, Tcl_Interp *target, CONST char *targetCmd, int objc, Tcl_Obj *CONST objv[]); /* 87 */
+    Tcl_Channel (*tcl_CreateChannel) (Tcl_ChannelType *typePtr, CONST char *chanName, ClientData instanceData, int mask); /* 88 */
+    void (*tcl_CreateChannelHandler) (Tcl_Channel chan, int mask, Tcl_ChannelProc *proc, ClientData clientData); /* 89 */
+    void (*tcl_CreateCloseHandler) (Tcl_Channel chan, Tcl_CloseProc *proc, ClientData clientData); /* 90 */
+    Tcl_Command (*tcl_CreateCommand) (Tcl_Interp *interp, CONST char *cmdName, Tcl_CmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc); /* 91 */
+    void (*tcl_CreateEventSource) (Tcl_EventSetupProc *setupProc, Tcl_EventCheckProc *checkProc, ClientData clientData); /* 92 */
+    void (*tcl_CreateExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 93 */
+    Tcl_Interp * (*tcl_CreateInterp) (void); /* 94 */
+    void (*tcl_CreateMathFunc) (Tcl_Interp *interp, CONST char *name, int numArgs, Tcl_ValueType *argTypes, Tcl_MathProc *proc, ClientData clientData); /* 95 */
+    Tcl_Command (*tcl_CreateObjCommand) (Tcl_Interp *interp, CONST char *cmdName, Tcl_ObjCmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc); /* 96 */
+    Tcl_Interp * (*tcl_CreateSlave) (Tcl_Interp *interp, CONST char *slaveName, int isSafe); /* 97 */
+    Tcl_TimerToken (*tcl_CreateTimerHandler) (int milliseconds, Tcl_TimerProc *proc, ClientData clientData); /* 98 */
+    Tcl_Trace (*tcl_CreateTrace) (Tcl_Interp *interp, int level, Tcl_CmdTraceProc *proc, ClientData clientData); /* 99 */
+    void (*tcl_DeleteAssocData) (Tcl_Interp *interp, CONST char *name); /* 100 */
+    void (*tcl_DeleteChannelHandler) (Tcl_Channel chan, Tcl_ChannelProc *proc, ClientData clientData); /* 101 */
+    void (*tcl_DeleteCloseHandler) (Tcl_Channel chan, Tcl_CloseProc *proc, ClientData clientData); /* 102 */
+    int (*tcl_DeleteCommand) (Tcl_Interp *interp, CONST char *cmdName); /* 103 */
+    int (*tcl_DeleteCommandFromToken) (Tcl_Interp *interp, Tcl_Command command); /* 104 */
+    void (*tcl_DeleteEvents) (Tcl_EventDeleteProc *proc, ClientData clientData); /* 105 */
+    void (*tcl_DeleteEventSource) (Tcl_EventSetupProc *setupProc, Tcl_EventCheckProc *checkProc, ClientData clientData); /* 106 */
+    void (*tcl_DeleteExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 107 */
+    void (*tcl_DeleteHashEntry) (Tcl_HashEntry *entryPtr); /* 108 */
+    void (*tcl_DeleteHashTable) (Tcl_HashTable *tablePtr); /* 109 */
+    void (*tcl_DeleteInterp) (Tcl_Interp *interp); /* 110 */
+    void (*tcl_DetachPids) (int numPids, Tcl_Pid *pidPtr); /* 111 */
+    void (*tcl_DeleteTimerHandler) (Tcl_TimerToken token); /* 112 */
+    void (*tcl_DeleteTrace) (Tcl_Interp *interp, Tcl_Trace trace); /* 113 */
+    void (*tcl_DontCallWhenDeleted) (Tcl_Interp *interp, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 114 */
+    int (*tcl_DoOneEvent) (int flags); /* 115 */
+    void (*tcl_DoWhenIdle) (Tcl_IdleProc *proc, ClientData clientData); /* 116 */
+    char * (*tcl_DStringAppend) (Tcl_DString *dsPtr, CONST char *bytes, int length); /* 117 */
+    char * (*tcl_DStringAppendElement) (Tcl_DString *dsPtr, CONST char *element); /* 118 */
+    void (*tcl_DStringEndSublist) (Tcl_DString *dsPtr); /* 119 */
+    void (*tcl_DStringFree) (Tcl_DString *dsPtr); /* 120 */
+    void (*tcl_DStringGetResult) (Tcl_Interp *interp, Tcl_DString *dsPtr); /* 121 */
+    void (*tcl_DStringInit) (Tcl_DString *dsPtr); /* 122 */
+    void (*tcl_DStringResult) (Tcl_Interp *interp, Tcl_DString *dsPtr); /* 123 */
+    void (*tcl_DStringSetLength) (Tcl_DString *dsPtr, int length); /* 124 */
+    void (*tcl_DStringStartSublist) (Tcl_DString *dsPtr); /* 125 */
+    int (*tcl_Eof) (Tcl_Channel chan); /* 126 */
+    CONST84_RETURN char * (*tcl_ErrnoId) (void); /* 127 */
+    CONST84_RETURN char * (*tcl_ErrnoMsg) (int err); /* 128 */
+    int (*tcl_Eval) (Tcl_Interp *interp, CONST char *script); /* 129 */
+    int (*tcl_EvalFile) (Tcl_Interp *interp, CONST char *fileName); /* 130 */
+    int (*tcl_EvalObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 131 */
+    void (*tcl_EventuallyFree) (ClientData clientData, Tcl_FreeProc *freeProc); /* 132 */
+    void (*tcl_Exit) (int status); /* 133 */
+    int (*tcl_ExposeCommand) (Tcl_Interp *interp, CONST char *hiddenCmdToken, CONST char *cmdName); /* 134 */
+    int (*tcl_ExprBoolean) (Tcl_Interp *interp, CONST char *expr, int *ptr); /* 135 */
+    int (*tcl_ExprBooleanObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int *ptr); /* 136 */
+    int (*tcl_ExprDouble) (Tcl_Interp *interp, CONST char *expr, double *ptr); /* 137 */
+    int (*tcl_ExprDoubleObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, double *ptr); /* 138 */
+    int (*tcl_ExprLong) (Tcl_Interp *interp, CONST char *expr, long *ptr); /* 139 */
+    int (*tcl_ExprLongObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, long *ptr); /* 140 */
+    int (*tcl_ExprObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Obj **resultPtrPtr); /* 141 */
+    int (*tcl_ExprString) (Tcl_Interp *interp, CONST char *expr); /* 142 */
+    void (*tcl_Finalize) (void); /* 143 */
+    void (*tcl_FindExecutable) (CONST char *argv0); /* 144 */
+    Tcl_HashEntry * (*tcl_FirstHashEntry) (Tcl_HashTable *tablePtr, Tcl_HashSearch *searchPtr); /* 145 */
+    int (*tcl_Flush) (Tcl_Channel chan); /* 146 */
+    void (*tcl_FreeResult) (Tcl_Interp *interp); /* 147 */
+    int (*tcl_GetAlias) (Tcl_Interp *interp, CONST char *slaveCmd, Tcl_Interp **targetInterpPtr, CONST84 char **targetCmdPtr, int *argcPtr, CONST84 char ***argvPtr); /* 148 */
+    int (*tcl_GetAliasObj) (Tcl_Interp *interp, CONST char *slaveCmd, Tcl_Interp **targetInterpPtr, CONST84 char **targetCmdPtr, int *objcPtr, Tcl_Obj ***objv); /* 149 */
+    ClientData (*tcl_GetAssocData) (Tcl_Interp *interp, CONST char *name, Tcl_InterpDeleteProc **procPtr); /* 150 */
+    Tcl_Channel (*tcl_GetChannel) (Tcl_Interp *interp, CONST char *chanName, int *modePtr); /* 151 */
+    int (*tcl_GetChannelBufferSize) (Tcl_Channel chan); /* 152 */
+    int (*tcl_GetChannelHandle) (Tcl_Channel chan, int direction, ClientData *handlePtr); /* 153 */
+    ClientData (*tcl_GetChannelInstanceData) (Tcl_Channel chan); /* 154 */
+    int (*tcl_GetChannelMode) (Tcl_Channel chan); /* 155 */
+    CONST84_RETURN char * (*tcl_GetChannelName) (Tcl_Channel chan); /* 156 */
+    int (*tcl_GetChannelOption) (Tcl_Interp *interp, Tcl_Channel chan, CONST char *optionName, Tcl_DString *dsPtr); /* 157 */
+    Tcl_ChannelType * (*tcl_GetChannelType) (Tcl_Channel chan); /* 158 */
+    int (*tcl_GetCommandInfo) (Tcl_Interp *interp, CONST char *cmdName, Tcl_CmdInfo *infoPtr); /* 159 */
+    CONST84_RETURN char * (*tcl_GetCommandName) (Tcl_Interp *interp, Tcl_Command command); /* 160 */
+    int (*tcl_GetErrno) (void); /* 161 */
+    CONST84_RETURN char * (*tcl_GetHostName) (void); /* 162 */
+    int (*tcl_GetInterpPath) (Tcl_Interp *askInterp, Tcl_Interp *slaveInterp); /* 163 */
+    Tcl_Interp * (*tcl_GetMaster) (Tcl_Interp *interp); /* 164 */
+    CONST char * (*tcl_GetNameOfExecutable) (void); /* 165 */
+    Tcl_Obj * (*tcl_GetObjResult) (Tcl_Interp *interp); /* 166 */
 #if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
-    int (*tcl_GetOpenFile) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *chanID, int forWriting, int checkUsage, ClientData *filePtr)); /* 167 */
+    int (*tcl_GetOpenFile) (Tcl_Interp *interp, CONST char *chanID, int forWriting, int checkUsage, ClientData *filePtr); /* 167 */
 #endif /* UNIX */
 #if defined(__WIN32__) /* WIN */
     VOID *reserved167;
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
-    int (*tcl_GetOpenFile) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *chanID, int forWriting, int checkUsage, ClientData *filePtr)); /* 167 */
+    int (*tcl_GetOpenFile) (Tcl_Interp *interp, CONST char *chanID, int forWriting, int checkUsage, ClientData *filePtr); /* 167 */
 #endif /* MACOSX */
-    Tcl_PathType (*tcl_GetPathType) _ANSI_ARGS_((CONST char *path)); /* 168 */
-    int (*tcl_Gets) _ANSI_ARGS_((Tcl_Channel chan, Tcl_DString *dsPtr)); /* 169 */
-    int (*tcl_GetsObj) _ANSI_ARGS_((Tcl_Channel chan, Tcl_Obj *objPtr)); /* 170 */
-    int (*tcl_GetServiceMode) _ANSI_ARGS_((void)); /* 171 */
-    Tcl_Interp * (*tcl_GetSlave) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *slaveName)); /* 172 */
-    Tcl_Channel (*tcl_GetStdChannel) _ANSI_ARGS_((int type)); /* 173 */
-    CONST84_RETURN char * (*tcl_GetStringResult) _ANSI_ARGS_((Tcl_Interp *interp)); /* 174 */
-    CONST84_RETURN char * (*tcl_GetVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags)); /* 175 */
-    CONST84_RETURN char * (*tcl_GetVar2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags)); /* 176 */
-    int (*tcl_GlobalEval) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *command)); /* 177 */
-    int (*tcl_GlobalEvalObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr)); /* 178 */
-    int (*tcl_HideCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmdName, CONST char *hiddenCmdToken)); /* 179 */
-    int (*tcl_Init) _ANSI_ARGS_((Tcl_Interp *interp)); /* 180 */
-    void (*tcl_InitHashTable) _ANSI_ARGS_((Tcl_HashTable *tablePtr, int keyType)); /* 181 */
-    int (*tcl_InputBlocked) _ANSI_ARGS_((Tcl_Channel chan)); /* 182 */
-    int (*tcl_InputBuffered) _ANSI_ARGS_((Tcl_Channel chan)); /* 183 */
-    int (*tcl_InterpDeleted) _ANSI_ARGS_((Tcl_Interp *interp)); /* 184 */
-    int (*tcl_IsSafe) _ANSI_ARGS_((Tcl_Interp *interp)); /* 185 */
-    char * (*tcl_JoinPath) _ANSI_ARGS_((int argc, CONST84 char *CONST *argv, Tcl_DString *resultPtr)); /* 186 */
-    int (*tcl_LinkVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, char *addr, int type)); /* 187 */
+    Tcl_PathType (*tcl_GetPathType) (CONST char *path); /* 168 */
+    int (*tcl_Gets) (Tcl_Channel chan, Tcl_DString *dsPtr); /* 169 */
+    int (*tcl_GetsObj) (Tcl_Channel chan, Tcl_Obj *objPtr); /* 170 */
+    int (*tcl_GetServiceMode) (void); /* 171 */
+    Tcl_Interp * (*tcl_GetSlave) (Tcl_Interp *interp, CONST char *slaveName); /* 172 */
+    Tcl_Channel (*tcl_GetStdChannel) (int type); /* 173 */
+    CONST84_RETURN char * (*tcl_GetStringResult) (Tcl_Interp *interp); /* 174 */
+    CONST84_RETURN char * (*tcl_GetVar) (Tcl_Interp *interp, CONST char *varName, int flags); /* 175 */
+    CONST84_RETURN char * (*tcl_GetVar2) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags); /* 176 */
+    int (*tcl_GlobalEval) (Tcl_Interp *interp, CONST char *command); /* 177 */
+    int (*tcl_GlobalEvalObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 178 */
+    int (*tcl_HideCommand) (Tcl_Interp *interp, CONST char *cmdName, CONST char *hiddenCmdToken); /* 179 */
+    int (*tcl_Init) (Tcl_Interp *interp); /* 180 */
+    void (*tcl_InitHashTable) (Tcl_HashTable *tablePtr, int keyType); /* 181 */
+    int (*tcl_InputBlocked) (Tcl_Channel chan); /* 182 */
+    int (*tcl_InputBuffered) (Tcl_Channel chan); /* 183 */
+    int (*tcl_InterpDeleted) (Tcl_Interp *interp); /* 184 */
+    int (*tcl_IsSafe) (Tcl_Interp *interp); /* 185 */
+    char * (*tcl_JoinPath) (int argc, CONST84 char *CONST *argv, Tcl_DString *resultPtr); /* 186 */
+    int (*tcl_LinkVar) (Tcl_Interp *interp, CONST char *varName, char *addr, int type); /* 187 */
     VOID *reserved188;
-    Tcl_Channel (*tcl_MakeFileChannel) _ANSI_ARGS_((ClientData handle, int mode)); /* 189 */
-    int (*tcl_MakeSafe) _ANSI_ARGS_((Tcl_Interp *interp)); /* 190 */
-    Tcl_Channel (*tcl_MakeTcpClientChannel) _ANSI_ARGS_((ClientData tcpSocket)); /* 191 */
-    char * (*tcl_Merge) _ANSI_ARGS_((int argc, CONST84 char *CONST *argv)); /* 192 */
-    Tcl_HashEntry * (*tcl_NextHashEntry) _ANSI_ARGS_((Tcl_HashSearch *searchPtr)); /* 193 */
-    void (*tcl_NotifyChannel) _ANSI_ARGS_((Tcl_Channel channel, int mask)); /* 194 */
-    Tcl_Obj * (*tcl_ObjGetVar2) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags)); /* 195 */
-    Tcl_Obj * (*tcl_ObjSetVar2) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr, int flags)); /* 196 */
-    Tcl_Channel (*tcl_OpenCommandChannel) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST84 char **argv, int flags)); /* 197 */
-    Tcl_Channel (*tcl_OpenFileChannel) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *fileName, CONST char *modeString, int permissions)); /* 198 */
-    Tcl_Channel (*tcl_OpenTcpClient) _ANSI_ARGS_((Tcl_Interp *interp, int port, CONST char *address, CONST char *myaddr, int myport, int async)); /* 199 */
-    Tcl_Channel (*tcl_OpenTcpServer) _ANSI_ARGS_((Tcl_Interp *interp, int port, CONST char *host, Tcl_TcpAcceptProc *acceptProc, ClientData callbackData)); /* 200 */
-    void (*tcl_Preserve) _ANSI_ARGS_((ClientData data)); /* 201 */
-    void (*tcl_PrintDouble) _ANSI_ARGS_((Tcl_Interp *interp, double value, char *dst)); /* 202 */
-    int (*tcl_PutEnv) _ANSI_ARGS_((CONST char *assignment)); /* 203 */
-    CONST84_RETURN char * (*tcl_PosixError) _ANSI_ARGS_((Tcl_Interp *interp)); /* 204 */
-    void (*tcl_QueueEvent) _ANSI_ARGS_((Tcl_Event *evPtr, Tcl_QueuePosition position)); /* 205 */
-    int (*tcl_Read) _ANSI_ARGS_((Tcl_Channel chan, char *bufPtr, int toRead)); /* 206 */
-    void (*tcl_ReapDetachedProcs) _ANSI_ARGS_((void)); /* 207 */
-    int (*tcl_RecordAndEval) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmd, int flags)); /* 208 */
-    int (*tcl_RecordAndEvalObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *cmdPtr, int flags)); /* 209 */
-    void (*tcl_RegisterChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 210 */
-    void (*tcl_RegisterObjType) _ANSI_ARGS_((Tcl_ObjType *typePtr)); /* 211 */
-    Tcl_RegExp (*tcl_RegExpCompile) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *pattern)); /* 212 */
-    int (*tcl_RegExpExec) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_RegExp regexp, CONST char *text, CONST char *start)); /* 213 */
-    int (*tcl_RegExpMatch) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *text, CONST char *pattern)); /* 214 */
-    void (*tcl_RegExpRange) _ANSI_ARGS_((Tcl_RegExp regexp, int index, CONST84 char **startPtr, CONST84 char **endPtr)); /* 215 */
-    void (*tcl_Release) _ANSI_ARGS_((ClientData clientData)); /* 216 */
-    void (*tcl_ResetResult) _ANSI_ARGS_((Tcl_Interp *interp)); /* 217 */
-    int (*tcl_ScanElement) _ANSI_ARGS_((CONST char *src, int *flagPtr)); /* 218 */
-    int (*tcl_ScanCountedElement) _ANSI_ARGS_((CONST char *src, int length, int *flagPtr)); /* 219 */
-    int (*tcl_SeekOld) _ANSI_ARGS_((Tcl_Channel chan, int offset, int mode)); /* 220 */
-    int (*tcl_ServiceAll) _ANSI_ARGS_((void)); /* 221 */
-    int (*tcl_ServiceEvent) _ANSI_ARGS_((int flags)); /* 222 */
-    void (*tcl_SetAssocData) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_InterpDeleteProc *proc, ClientData clientData)); /* 223 */
-    void (*tcl_SetChannelBufferSize) _ANSI_ARGS_((Tcl_Channel chan, int sz)); /* 224 */
-    int (*tcl_SetChannelOption) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan, CONST char *optionName, CONST char *newValue)); /* 225 */
-    int (*tcl_SetCommandInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *cmdName, CONST Tcl_CmdInfo *infoPtr)); /* 226 */
-    void (*tcl_SetErrno) _ANSI_ARGS_((int err)); /* 227 */
-    void (*tcl_SetErrorCode) _ANSI_ARGS_((Tcl_Interp *interp, ...)); /* 228 */
-    void (*tcl_SetMaxBlockTime) _ANSI_ARGS_((Tcl_Time *timePtr)); /* 229 */
-    void (*tcl_SetPanicProc) _ANSI_ARGS_((Tcl_PanicProc *panicProc)); /* 230 */
-    int (*tcl_SetRecursionLimit) _ANSI_ARGS_((Tcl_Interp *interp, int depth)); /* 231 */
-    void (*tcl_SetResult) _ANSI_ARGS_((Tcl_Interp *interp, char *result, Tcl_FreeProc *freeProc)); /* 232 */
-    int (*tcl_SetServiceMode) _ANSI_ARGS_((int mode)); /* 233 */
-    void (*tcl_SetObjErrorCode) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *errorObjPtr)); /* 234 */
-    void (*tcl_SetObjResult) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *resultObjPtr)); /* 235 */
-    void (*tcl_SetStdChannel) _ANSI_ARGS_((Tcl_Channel channel, int type)); /* 236 */
-    CONST84_RETURN char * (*tcl_SetVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, CONST char *newValue, int flags)); /* 237 */
-    CONST84_RETURN char * (*tcl_SetVar2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, CONST char *newValue, int flags)); /* 238 */
-    CONST84_RETURN char * (*tcl_SignalId) _ANSI_ARGS_((int sig)); /* 239 */
-    CONST84_RETURN char * (*tcl_SignalMsg) _ANSI_ARGS_((int sig)); /* 240 */
-    void (*tcl_SourceRCFile) _ANSI_ARGS_((Tcl_Interp *interp)); /* 241 */
-    int (*tcl_SplitList) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *listStr, int *argcPtr, CONST84 char ***argvPtr)); /* 242 */
-    void (*tcl_SplitPath) _ANSI_ARGS_((CONST char *path, int *argcPtr, CONST84 char ***argvPtr)); /* 243 */
-    void (*tcl_StaticPackage) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *pkgName, Tcl_PackageInitProc *initProc, Tcl_PackageInitProc *safeInitProc)); /* 244 */
-    int (*tcl_StringMatch) _ANSI_ARGS_((CONST char *str, CONST char *pattern)); /* 245 */
-    int (*tcl_TellOld) _ANSI_ARGS_((Tcl_Channel chan)); /* 246 */
-    int (*tcl_TraceVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData)); /* 247 */
-    int (*tcl_TraceVar2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData)); /* 248 */
-    char * (*tcl_TranslateFileName) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_DString *bufferPtr)); /* 249 */
-    int (*tcl_Ungets) _ANSI_ARGS_((Tcl_Channel chan, CONST char *str, int len, int atHead)); /* 250 */
-    void (*tcl_UnlinkVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName)); /* 251 */
-    int (*tcl_UnregisterChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 252 */
-    int (*tcl_UnsetVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags)); /* 253 */
-    int (*tcl_UnsetVar2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags)); /* 254 */
-    void (*tcl_UntraceVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData)); /* 255 */
-    void (*tcl_UntraceVar2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData)); /* 256 */
-    void (*tcl_UpdateLinkedVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName)); /* 257 */
-    int (*tcl_UpVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *frameName, CONST char *varName, CONST char *localName, int flags)); /* 258 */
-    int (*tcl_UpVar2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *frameName, CONST char *part1, CONST char *part2, CONST char *localName, int flags)); /* 259 */
-    int (*tcl_VarEval) _ANSI_ARGS_((Tcl_Interp *interp, ...)); /* 260 */
-    ClientData (*tcl_VarTraceInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData)); /* 261 */
-    ClientData (*tcl_VarTraceInfo2) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData)); /* 262 */
-    int (*tcl_Write) _ANSI_ARGS_((Tcl_Channel chan, CONST char *s, int slen)); /* 263 */
-    void (*tcl_WrongNumArgs) _ANSI_ARGS_((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], CONST char *message)); /* 264 */
-    int (*tcl_DumpActiveMemory) _ANSI_ARGS_((CONST char *fileName)); /* 265 */
-    void (*tcl_ValidateAllMemory) _ANSI_ARGS_((CONST char *file, int line)); /* 266 */
-    void (*tcl_AppendResultVA) _ANSI_ARGS_((Tcl_Interp *interp, va_list argList)); /* 267 */
-    void (*tcl_AppendStringsToObjVA) _ANSI_ARGS_((Tcl_Obj *objPtr, va_list argList)); /* 268 */
-    char * (*tcl_HashStats) _ANSI_ARGS_((Tcl_HashTable *tablePtr)); /* 269 */
-    CONST84_RETURN char * (*tcl_ParseVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *start, CONST84 char **termPtr)); /* 270 */
-    CONST84_RETURN char * (*tcl_PkgPresent) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, CONST char *version, int exact)); /* 271 */
-    CONST84_RETURN char * (*tcl_PkgPresentEx) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, CONST char *version, int exact, ClientData *clientDataPtr)); /* 272 */
-    int (*tcl_PkgProvide) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, CONST char *version)); /* 273 */
-    CONST84_RETURN char * (*tcl_PkgRequire) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, CONST char *version, int exact)); /* 274 */
-    void (*tcl_SetErrorCodeVA) _ANSI_ARGS_((Tcl_Interp *interp, va_list argList)); /* 275 */
-    int (*tcl_VarEvalVA) _ANSI_ARGS_((Tcl_Interp *interp, va_list argList)); /* 276 */
-    Tcl_Pid (*tcl_WaitPid) _ANSI_ARGS_((Tcl_Pid pid, int *statPtr, int options)); /* 277 */
-    void (*tcl_PanicVA) _ANSI_ARGS_((CONST char *format, va_list argList)); /* 278 */
-    void (*tcl_GetVersion) _ANSI_ARGS_((int *major, int *minor, int *patchLevel, int *type)); /* 279 */
-    void (*tcl_InitMemory) _ANSI_ARGS_((Tcl_Interp *interp)); /* 280 */
-    Tcl_Channel (*tcl_StackChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_ChannelType *typePtr, ClientData instanceData, int mask, Tcl_Channel prevChan)); /* 281 */
-    int (*tcl_UnstackChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 282 */
-    Tcl_Channel (*tcl_GetStackedChannel) _ANSI_ARGS_((Tcl_Channel chan)); /* 283 */
-    void (*tcl_SetMainLoop) _ANSI_ARGS_((Tcl_MainLoopProc *proc)); /* 284 */
+    Tcl_Channel (*tcl_MakeFileChannel) (ClientData handle, int mode); /* 189 */
+    int (*tcl_MakeSafe) (Tcl_Interp *interp); /* 190 */
+    Tcl_Channel (*tcl_MakeTcpClientChannel) (ClientData tcpSocket); /* 191 */
+    char * (*tcl_Merge) (int argc, CONST84 char *CONST *argv); /* 192 */
+    Tcl_HashEntry * (*tcl_NextHashEntry) (Tcl_HashSearch *searchPtr); /* 193 */
+    void (*tcl_NotifyChannel) (Tcl_Channel channel, int mask); /* 194 */
+    Tcl_Obj * (*tcl_ObjGetVar2) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags); /* 195 */
+    Tcl_Obj * (*tcl_ObjSetVar2) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr, int flags); /* 196 */
+    Tcl_Channel (*tcl_OpenCommandChannel) (Tcl_Interp *interp, int argc, CONST84 char **argv, int flags); /* 197 */
+    Tcl_Channel (*tcl_OpenFileChannel) (Tcl_Interp *interp, CONST char *fileName, CONST char *modeString, int permissions); /* 198 */
+    Tcl_Channel (*tcl_OpenTcpClient) (Tcl_Interp *interp, int port, CONST char *address, CONST char *myaddr, int myport, int async); /* 199 */
+    Tcl_Channel (*tcl_OpenTcpServer) (Tcl_Interp *interp, int port, CONST char *host, Tcl_TcpAcceptProc *acceptProc, ClientData callbackData); /* 200 */
+    void (*tcl_Preserve) (ClientData data); /* 201 */
+    void (*tcl_PrintDouble) (Tcl_Interp *interp, double value, char *dst); /* 202 */
+    int (*tcl_PutEnv) (CONST char *assignment); /* 203 */
+    CONST84_RETURN char * (*tcl_PosixError) (Tcl_Interp *interp); /* 204 */
+    void (*tcl_QueueEvent) (Tcl_Event *evPtr, Tcl_QueuePosition position); /* 205 */
+    int (*tcl_Read) (Tcl_Channel chan, char *bufPtr, int toRead); /* 206 */
+    void (*tcl_ReapDetachedProcs) (void); /* 207 */
+    int (*tcl_RecordAndEval) (Tcl_Interp *interp, CONST char *cmd, int flags); /* 208 */
+    int (*tcl_RecordAndEvalObj) (Tcl_Interp *interp, Tcl_Obj *cmdPtr, int flags); /* 209 */
+    void (*tcl_RegisterChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 210 */
+    void (*tcl_RegisterObjType) (Tcl_ObjType *typePtr); /* 211 */
+    Tcl_RegExp (*tcl_RegExpCompile) (Tcl_Interp *interp, CONST char *pattern); /* 212 */
+    int (*tcl_RegExpExec) (Tcl_Interp *interp, Tcl_RegExp regexp, CONST char *text, CONST char *start); /* 213 */
+    int (*tcl_RegExpMatch) (Tcl_Interp *interp, CONST char *text, CONST char *pattern); /* 214 */
+    void (*tcl_RegExpRange) (Tcl_RegExp regexp, int index, CONST84 char **startPtr, CONST84 char **endPtr); /* 215 */
+    void (*tcl_Release) (ClientData clientData); /* 216 */
+    void (*tcl_ResetResult) (Tcl_Interp *interp); /* 217 */
+    int (*tcl_ScanElement) (CONST char *src, int *flagPtr); /* 218 */
+    int (*tcl_ScanCountedElement) (CONST char *src, int length, int *flagPtr); /* 219 */
+    int (*tcl_SeekOld) (Tcl_Channel chan, int offset, int mode); /* 220 */
+    int (*tcl_ServiceAll) (void); /* 221 */
+    int (*tcl_ServiceEvent) (int flags); /* 222 */
+    void (*tcl_SetAssocData) (Tcl_Interp *interp, CONST char *name, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 223 */
+    void (*tcl_SetChannelBufferSize) (Tcl_Channel chan, int sz); /* 224 */
+    int (*tcl_SetChannelOption) (Tcl_Interp *interp, Tcl_Channel chan, CONST char *optionName, CONST char *newValue); /* 225 */
+    int (*tcl_SetCommandInfo) (Tcl_Interp *interp, CONST char *cmdName, CONST Tcl_CmdInfo *infoPtr); /* 226 */
+    void (*tcl_SetErrno) (int err); /* 227 */
+    void (*tcl_SetErrorCode) (Tcl_Interp *interp, ...); /* 228 */
+    void (*tcl_SetMaxBlockTime) (Tcl_Time *timePtr); /* 229 */
+    void (*tcl_SetPanicProc) (Tcl_PanicProc *panicProc); /* 230 */
+    int (*tcl_SetRecursionLimit) (Tcl_Interp *interp, int depth); /* 231 */
+    void (*tcl_SetResult) (Tcl_Interp *interp, char *result, Tcl_FreeProc *freeProc); /* 232 */
+    int (*tcl_SetServiceMode) (int mode); /* 233 */
+    void (*tcl_SetObjErrorCode) (Tcl_Interp *interp, Tcl_Obj *errorObjPtr); /* 234 */
+    void (*tcl_SetObjResult) (Tcl_Interp *interp, Tcl_Obj *resultObjPtr); /* 235 */
+    void (*tcl_SetStdChannel) (Tcl_Channel channel, int type); /* 236 */
+    CONST84_RETURN char * (*tcl_SetVar) (Tcl_Interp *interp, CONST char *varName, CONST char *newValue, int flags); /* 237 */
+    CONST84_RETURN char * (*tcl_SetVar2) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, CONST char *newValue, int flags); /* 238 */
+    CONST84_RETURN char * (*tcl_SignalId) (int sig); /* 239 */
+    CONST84_RETURN char * (*tcl_SignalMsg) (int sig); /* 240 */
+    void (*tcl_SourceRCFile) (Tcl_Interp *interp); /* 241 */
+    int (*tcl_SplitList) (Tcl_Interp *interp, CONST char *listStr, int *argcPtr, CONST84 char ***argvPtr); /* 242 */
+    void (*tcl_SplitPath) (CONST char *path, int *argcPtr, CONST84 char ***argvPtr); /* 243 */
+    void (*tcl_StaticPackage) (Tcl_Interp *interp, CONST char *pkgName, Tcl_PackageInitProc *initProc, Tcl_PackageInitProc *safeInitProc); /* 244 */
+    int (*tcl_StringMatch) (CONST char *str, CONST char *pattern); /* 245 */
+    int (*tcl_TellOld) (Tcl_Channel chan); /* 246 */
+    int (*tcl_TraceVar) (Tcl_Interp *interp, CONST char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 247 */
+    int (*tcl_TraceVar2) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 248 */
+    char * (*tcl_TranslateFileName) (Tcl_Interp *interp, CONST char *name, Tcl_DString *bufferPtr); /* 249 */
+    int (*tcl_Ungets) (Tcl_Channel chan, CONST char *str, int len, int atHead); /* 250 */
+    void (*tcl_UnlinkVar) (Tcl_Interp *interp, CONST char *varName); /* 251 */
+    int (*tcl_UnregisterChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 252 */
+    int (*tcl_UnsetVar) (Tcl_Interp *interp, CONST char *varName, int flags); /* 253 */
+    int (*tcl_UnsetVar2) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags); /* 254 */
+    void (*tcl_UntraceVar) (Tcl_Interp *interp, CONST char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 255 */
+    void (*tcl_UntraceVar2) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 256 */
+    void (*tcl_UpdateLinkedVar) (Tcl_Interp *interp, CONST char *varName); /* 257 */
+    int (*tcl_UpVar) (Tcl_Interp *interp, CONST char *frameName, CONST char *varName, CONST char *localName, int flags); /* 258 */
+    int (*tcl_UpVar2) (Tcl_Interp *interp, CONST char *frameName, CONST char *part1, CONST char *part2, CONST char *localName, int flags); /* 259 */
+    int (*tcl_VarEval) (Tcl_Interp *interp, ...); /* 260 */
+    ClientData (*tcl_VarTraceInfo) (Tcl_Interp *interp, CONST char *varName, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData); /* 261 */
+    ClientData (*tcl_VarTraceInfo2) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData); /* 262 */
+    int (*tcl_Write) (Tcl_Channel chan, CONST char *s, int slen); /* 263 */
+    void (*tcl_WrongNumArgs) (Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], CONST char *message); /* 264 */
+    int (*tcl_DumpActiveMemory) (CONST char *fileName); /* 265 */
+    void (*tcl_ValidateAllMemory) (CONST char *file, int line); /* 266 */
+    void (*tcl_AppendResultVA) (Tcl_Interp *interp, va_list argList); /* 267 */
+    void (*tcl_AppendStringsToObjVA) (Tcl_Obj *objPtr, va_list argList); /* 268 */
+    char * (*tcl_HashStats) (Tcl_HashTable *tablePtr); /* 269 */
+    CONST84_RETURN char * (*tcl_ParseVar) (Tcl_Interp *interp, CONST char *start, CONST84 char **termPtr); /* 270 */
+    CONST84_RETURN char * (*tcl_PkgPresent) (Tcl_Interp *interp, CONST char *name, CONST char *version, int exact); /* 271 */
+    CONST84_RETURN char * (*tcl_PkgPresentEx) (Tcl_Interp *interp, CONST char *name, CONST char *version, int exact, ClientData *clientDataPtr); /* 272 */
+    int (*tcl_PkgProvide) (Tcl_Interp *interp, CONST char *name, CONST char *version); /* 273 */
+    CONST84_RETURN char * (*tcl_PkgRequire) (Tcl_Interp *interp, CONST char *name, CONST char *version, int exact); /* 274 */
+    void (*tcl_SetErrorCodeVA) (Tcl_Interp *interp, va_list argList); /* 275 */
+    int (*tcl_VarEvalVA) (Tcl_Interp *interp, va_list argList); /* 276 */
+    Tcl_Pid (*tcl_WaitPid) (Tcl_Pid pid, int *statPtr, int options); /* 277 */
+    void (*tcl_PanicVA) (CONST char *format, va_list argList); /* 278 */
+    void (*tcl_GetVersion) (int *major, int *minor, int *patchLevel, int *type); /* 279 */
+    void (*tcl_InitMemory) (Tcl_Interp *interp); /* 280 */
+    Tcl_Channel (*tcl_StackChannel) (Tcl_Interp *interp, Tcl_ChannelType *typePtr, ClientData instanceData, int mask, Tcl_Channel prevChan); /* 281 */
+    int (*tcl_UnstackChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 282 */
+    Tcl_Channel (*tcl_GetStackedChannel) (Tcl_Channel chan); /* 283 */
+    void (*tcl_SetMainLoop) (Tcl_MainLoopProc *proc); /* 284 */
     VOID *reserved285;
-    void (*tcl_AppendObjToObj) _ANSI_ARGS_((Tcl_Obj *objPtr, Tcl_Obj *appendObjPtr)); /* 286 */
-    Tcl_Encoding (*tcl_CreateEncoding) _ANSI_ARGS_((Tcl_EncodingType *typePtr)); /* 287 */
-    void (*tcl_CreateThreadExitHandler) _ANSI_ARGS_((Tcl_ExitProc *proc, ClientData clientData)); /* 288 */
-    void (*tcl_DeleteThreadExitHandler) _ANSI_ARGS_((Tcl_ExitProc *proc, ClientData clientData)); /* 289 */
-    void (*tcl_DiscardResult) _ANSI_ARGS_((Tcl_SavedResult *statePtr)); /* 290 */
-    int (*tcl_EvalEx) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *script, int numBytes, int flags)); /* 291 */
-    int (*tcl_EvalObjv) _ANSI_ARGS_((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags)); /* 292 */
-    int (*tcl_EvalObjEx) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, int flags)); /* 293 */
-    void (*tcl_ExitThread) _ANSI_ARGS_((int status)); /* 294 */
-    int (*tcl_ExternalToUtf) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Encoding encoding, CONST char *src, int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst, int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr)); /* 295 */
-    char * (*tcl_ExternalToUtfDString) _ANSI_ARGS_((Tcl_Encoding encoding, CONST char *src, int srcLen, Tcl_DString *dsPtr)); /* 296 */
-    void (*tcl_FinalizeThread) _ANSI_ARGS_((void)); /* 297 */
-    void (*tcl_FinalizeNotifier) _ANSI_ARGS_((ClientData clientData)); /* 298 */
-    void (*tcl_FreeEncoding) _ANSI_ARGS_((Tcl_Encoding encoding)); /* 299 */
-    Tcl_ThreadId (*tcl_GetCurrentThread) _ANSI_ARGS_((void)); /* 300 */
-    Tcl_Encoding (*tcl_GetEncoding) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name)); /* 301 */
-    CONST84_RETURN char * (*tcl_GetEncodingName) _ANSI_ARGS_((Tcl_Encoding encoding)); /* 302 */
-    void (*tcl_GetEncodingNames) _ANSI_ARGS_((Tcl_Interp *interp)); /* 303 */
-    int (*tcl_GetIndexFromObjStruct) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, CONST VOID *tablePtr, int offset, CONST char *msg, int flags, int *indexPtr)); /* 304 */
-    VOID * (*tcl_GetThreadData) _ANSI_ARGS_((Tcl_ThreadDataKey *keyPtr, int size)); /* 305 */
-    Tcl_Obj * (*tcl_GetVar2Ex) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags)); /* 306 */
-    ClientData (*tcl_InitNotifier) _ANSI_ARGS_((void)); /* 307 */
-    void (*tcl_MutexLock) _ANSI_ARGS_((Tcl_Mutex *mutexPtr)); /* 308 */
-    void (*tcl_MutexUnlock) _ANSI_ARGS_((Tcl_Mutex *mutexPtr)); /* 309 */
-    void (*tcl_ConditionNotify) _ANSI_ARGS_((Tcl_Condition *condPtr)); /* 310 */
-    void (*tcl_ConditionWait) _ANSI_ARGS_((Tcl_Condition *condPtr, Tcl_Mutex *mutexPtr, Tcl_Time *timePtr)); /* 311 */
-    int (*tcl_NumUtfChars) _ANSI_ARGS_((CONST char *src, int length)); /* 312 */
-    int (*tcl_ReadChars) _ANSI_ARGS_((Tcl_Channel channel, Tcl_Obj *objPtr, int charsToRead, int appendFlag)); /* 313 */
-    void (*tcl_RestoreResult) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_SavedResult *statePtr)); /* 314 */
-    void (*tcl_SaveResult) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_SavedResult *statePtr)); /* 315 */
-    int (*tcl_SetSystemEncoding) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name)); /* 316 */
-    Tcl_Obj * (*tcl_SetVar2Ex) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, Tcl_Obj *newValuePtr, int flags)); /* 317 */
-    void (*tcl_ThreadAlert) _ANSI_ARGS_((Tcl_ThreadId threadId)); /* 318 */
-    void (*tcl_ThreadQueueEvent) _ANSI_ARGS_((Tcl_ThreadId threadId, Tcl_Event *evPtr, Tcl_QueuePosition position)); /* 319 */
-    Tcl_UniChar (*tcl_UniCharAtIndex) _ANSI_ARGS_((CONST char *src, int index)); /* 320 */
-    Tcl_UniChar (*tcl_UniCharToLower) _ANSI_ARGS_((int ch)); /* 321 */
-    Tcl_UniChar (*tcl_UniCharToTitle) _ANSI_ARGS_((int ch)); /* 322 */
-    Tcl_UniChar (*tcl_UniCharToUpper) _ANSI_ARGS_((int ch)); /* 323 */
-    int (*tcl_UniCharToUtf) _ANSI_ARGS_((int ch, char *buf)); /* 324 */
-    CONST84_RETURN char * (*tcl_UtfAtIndex) _ANSI_ARGS_((CONST char *src, int index)); /* 325 */
-    int (*tcl_UtfCharComplete) _ANSI_ARGS_((CONST char *src, int length)); /* 326 */
-    int (*tcl_UtfBackslash) _ANSI_ARGS_((CONST char *src, int *readPtr, char *dst)); /* 327 */
-    CONST84_RETURN char * (*tcl_UtfFindFirst) _ANSI_ARGS_((CONST char *src, int ch)); /* 328 */
-    CONST84_RETURN char * (*tcl_UtfFindLast) _ANSI_ARGS_((CONST char *src, int ch)); /* 329 */
-    CONST84_RETURN char * (*tcl_UtfNext) _ANSI_ARGS_((CONST char *src)); /* 330 */
-    CONST84_RETURN char * (*tcl_UtfPrev) _ANSI_ARGS_((CONST char *src, CONST char *start)); /* 331 */
-    int (*tcl_UtfToExternal) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Encoding encoding, CONST char *src, int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst, int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr)); /* 332 */
-    char * (*tcl_UtfToExternalDString) _ANSI_ARGS_((Tcl_Encoding encoding, CONST char *src, int srcLen, Tcl_DString *dsPtr)); /* 333 */
-    int (*tcl_UtfToLower) _ANSI_ARGS_((char *src)); /* 334 */
-    int (*tcl_UtfToTitle) _ANSI_ARGS_((char *src)); /* 335 */
-    int (*tcl_UtfToUniChar) _ANSI_ARGS_((CONST char *src, Tcl_UniChar *chPtr)); /* 336 */
-    int (*tcl_UtfToUpper) _ANSI_ARGS_((char *src)); /* 337 */
-    int (*tcl_WriteChars) _ANSI_ARGS_((Tcl_Channel chan, CONST char *src, int srcLen)); /* 338 */
-    int (*tcl_WriteObj) _ANSI_ARGS_((Tcl_Channel chan, Tcl_Obj *objPtr)); /* 339 */
-    char * (*tcl_GetString) _ANSI_ARGS_((Tcl_Obj *objPtr)); /* 340 */
-    CONST84_RETURN char * (*tcl_GetDefaultEncodingDir) _ANSI_ARGS_((void)); /* 341 */
-    void (*tcl_SetDefaultEncodingDir) _ANSI_ARGS_((CONST char *path)); /* 342 */
-    void (*tcl_AlertNotifier) _ANSI_ARGS_((ClientData clientData)); /* 343 */
-    void (*tcl_ServiceModeHook) _ANSI_ARGS_((int mode)); /* 344 */
-    int (*tcl_UniCharIsAlnum) _ANSI_ARGS_((int ch)); /* 345 */
-    int (*tcl_UniCharIsAlpha) _ANSI_ARGS_((int ch)); /* 346 */
-    int (*tcl_UniCharIsDigit) _ANSI_ARGS_((int ch)); /* 347 */
-    int (*tcl_UniCharIsLower) _ANSI_ARGS_((int ch)); /* 348 */
-    int (*tcl_UniCharIsSpace) _ANSI_ARGS_((int ch)); /* 349 */
-    int (*tcl_UniCharIsUpper) _ANSI_ARGS_((int ch)); /* 350 */
-    int (*tcl_UniCharIsWordChar) _ANSI_ARGS_((int ch)); /* 351 */
-    int (*tcl_UniCharLen) _ANSI_ARGS_((CONST Tcl_UniChar *uniStr)); /* 352 */
-    int (*tcl_UniCharNcmp) _ANSI_ARGS_((CONST Tcl_UniChar *ucs, CONST Tcl_UniChar *uct, unsigned long numChars)); /* 353 */
-    char * (*tcl_UniCharToUtfDString) _ANSI_ARGS_((CONST Tcl_UniChar *uniStr, int uniLength, Tcl_DString *dsPtr)); /* 354 */
-    Tcl_UniChar * (*tcl_UtfToUniCharDString) _ANSI_ARGS_((CONST char *src, int length, Tcl_DString *dsPtr)); /* 355 */
-    Tcl_RegExp (*tcl_GetRegExpFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *patObj, int flags)); /* 356 */
-    Tcl_Obj * (*tcl_EvalTokens) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Token *tokenPtr, int count)); /* 357 */
-    void (*tcl_FreeParse) _ANSI_ARGS_((Tcl_Parse *parsePtr)); /* 358 */
-    void (*tcl_LogCommandInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *script, CONST char *command, int length)); /* 359 */
-    int (*tcl_ParseBraces) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr, int append, CONST84 char **termPtr)); /* 360 */
-    int (*tcl_ParseCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *start, int numBytes, int nested, Tcl_Parse *parsePtr)); /* 361 */
-    int (*tcl_ParseExpr) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr)); /* 362 */
-    int (*tcl_ParseQuotedString) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr, int append, CONST84 char **termPtr)); /* 363 */
-    int (*tcl_ParseVarName) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr, int append)); /* 364 */
-    char * (*tcl_GetCwd) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_DString *cwdPtr)); /* 365 */
-    int (*tcl_Chdir) _ANSI_ARGS_((CONST char *dirName)); /* 366 */
-    int (*tcl_Access) _ANSI_ARGS_((CONST char *path, int mode)); /* 367 */
-    int (*tcl_Stat) _ANSI_ARGS_((CONST char *path, struct stat *bufPtr)); /* 368 */
-    int (*tcl_UtfNcmp) _ANSI_ARGS_((CONST char *s1, CONST char *s2, unsigned long n)); /* 369 */
-    int (*tcl_UtfNcasecmp) _ANSI_ARGS_((CONST char *s1, CONST char *s2, unsigned long n)); /* 370 */
-    int (*tcl_StringCaseMatch) _ANSI_ARGS_((CONST char *str, CONST char *pattern, int nocase)); /* 371 */
-    int (*tcl_UniCharIsControl) _ANSI_ARGS_((int ch)); /* 372 */
-    int (*tcl_UniCharIsGraph) _ANSI_ARGS_((int ch)); /* 373 */
-    int (*tcl_UniCharIsPrint) _ANSI_ARGS_((int ch)); /* 374 */
-    int (*tcl_UniCharIsPunct) _ANSI_ARGS_((int ch)); /* 375 */
-    int (*tcl_RegExpExecObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_RegExp regexp, Tcl_Obj *textObj, int offset, int nmatches, int flags)); /* 376 */
-    void (*tcl_RegExpGetInfo) _ANSI_ARGS_((Tcl_RegExp regexp, Tcl_RegExpInfo *infoPtr)); /* 377 */
-    Tcl_Obj * (*tcl_NewUnicodeObj) _ANSI_ARGS_((CONST Tcl_UniChar *unicode, int numChars)); /* 378 */
-    void (*tcl_SetUnicodeObj) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST Tcl_UniChar *unicode, int numChars)); /* 379 */
-    int (*tcl_GetCharLength) _ANSI_ARGS_((Tcl_Obj *objPtr)); /* 380 */
-    Tcl_UniChar (*tcl_GetUniChar) _ANSI_ARGS_((Tcl_Obj *objPtr, int index)); /* 381 */
-    Tcl_UniChar * (*tcl_GetUnicode) _ANSI_ARGS_((Tcl_Obj *objPtr)); /* 382 */
-    Tcl_Obj * (*tcl_GetRange) _ANSI_ARGS_((Tcl_Obj *objPtr, int first, int last)); /* 383 */
-    void (*tcl_AppendUnicodeToObj) _ANSI_ARGS_((Tcl_Obj *objPtr, CONST Tcl_UniChar *unicode, int length)); /* 384 */
-    int (*tcl_RegExpMatchObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *textObj, Tcl_Obj *patternObj)); /* 385 */
-    void (*tcl_SetNotifier) _ANSI_ARGS_((Tcl_NotifierProcs *notifierProcPtr)); /* 386 */
-    Tcl_Mutex * (*tcl_GetAllocMutex) _ANSI_ARGS_((void)); /* 387 */
-    int (*tcl_GetChannelNames) _ANSI_ARGS_((Tcl_Interp *interp)); /* 388 */
-    int (*tcl_GetChannelNamesEx) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *pattern)); /* 389 */
-    int (*tcl_ProcObjCmd) _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); /* 390 */
-    void (*tcl_ConditionFinalize) _ANSI_ARGS_((Tcl_Condition *condPtr)); /* 391 */
-    void (*tcl_MutexFinalize) _ANSI_ARGS_((Tcl_Mutex *mutex)); /* 392 */
-    int (*tcl_CreateThread) _ANSI_ARGS_((Tcl_ThreadId *idPtr, Tcl_ThreadCreateProc proc, ClientData clientData, int stackSize, int flags)); /* 393 */
-    int (*tcl_ReadRaw) _ANSI_ARGS_((Tcl_Channel chan, char *dst, int bytesToRead)); /* 394 */
-    int (*tcl_WriteRaw) _ANSI_ARGS_((Tcl_Channel chan, CONST char *src, int srcLen)); /* 395 */
-    Tcl_Channel (*tcl_GetTopChannel) _ANSI_ARGS_((Tcl_Channel chan)); /* 396 */
-    int (*tcl_ChannelBuffered) _ANSI_ARGS_((Tcl_Channel chan)); /* 397 */
-    CONST84_RETURN char * (*tcl_ChannelName) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 398 */
-    Tcl_ChannelTypeVersion (*tcl_ChannelVersion) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 399 */
-    Tcl_DriverBlockModeProc * (*tcl_ChannelBlockModeProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 400 */
-    Tcl_DriverCloseProc * (*tcl_ChannelCloseProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 401 */
-    Tcl_DriverClose2Proc * (*tcl_ChannelClose2Proc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 402 */
-    Tcl_DriverInputProc * (*tcl_ChannelInputProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 403 */
-    Tcl_DriverOutputProc * (*tcl_ChannelOutputProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 404 */
-    Tcl_DriverSeekProc * (*tcl_ChannelSeekProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 405 */
-    Tcl_DriverSetOptionProc * (*tcl_ChannelSetOptionProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 406 */
-    Tcl_DriverGetOptionProc * (*tcl_ChannelGetOptionProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 407 */
-    Tcl_DriverWatchProc * (*tcl_ChannelWatchProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 408 */
-    Tcl_DriverGetHandleProc * (*tcl_ChannelGetHandleProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 409 */
-    Tcl_DriverFlushProc * (*tcl_ChannelFlushProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 410 */
-    Tcl_DriverHandlerProc * (*tcl_ChannelHandlerProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 411 */
-    int (*tcl_JoinThread) _ANSI_ARGS_((Tcl_ThreadId threadId, int *result)); /* 412 */
-    int (*tcl_IsChannelShared) _ANSI_ARGS_((Tcl_Channel channel)); /* 413 */
-    int (*tcl_IsChannelRegistered) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel channel)); /* 414 */
-    void (*tcl_CutChannel) _ANSI_ARGS_((Tcl_Channel channel)); /* 415 */
-    void (*tcl_SpliceChannel) _ANSI_ARGS_((Tcl_Channel channel)); /* 416 */
-    void (*tcl_ClearChannelHandlers) _ANSI_ARGS_((Tcl_Channel channel)); /* 417 */
-    int (*tcl_IsChannelExisting) _ANSI_ARGS_((CONST char *channelName)); /* 418 */
-    int (*tcl_UniCharNcasecmp) _ANSI_ARGS_((CONST Tcl_UniChar *ucs, CONST Tcl_UniChar *uct, unsigned long numChars)); /* 419 */
-    int (*tcl_UniCharCaseMatch) _ANSI_ARGS_((CONST Tcl_UniChar *uniStr, CONST Tcl_UniChar *uniPattern, int nocase)); /* 420 */
-    Tcl_HashEntry * (*tcl_FindHashEntry) _ANSI_ARGS_((Tcl_HashTable *tablePtr, CONST char *key)); /* 421 */
-    Tcl_HashEntry * (*tcl_CreateHashEntry) _ANSI_ARGS_((Tcl_HashTable *tablePtr, CONST char *key, int *newPtr)); /* 422 */
-    void (*tcl_InitCustomHashTable) _ANSI_ARGS_((Tcl_HashTable *tablePtr, int keyType, Tcl_HashKeyType *typePtr)); /* 423 */
-    void (*tcl_InitObjHashTable) _ANSI_ARGS_((Tcl_HashTable *tablePtr)); /* 424 */
-    ClientData (*tcl_CommandTraceInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags, Tcl_CommandTraceProc *procPtr, ClientData prevClientData)); /* 425 */
-    int (*tcl_TraceCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags, Tcl_CommandTraceProc *proc, ClientData clientData)); /* 426 */
-    void (*tcl_UntraceCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName, int flags, Tcl_CommandTraceProc *proc, ClientData clientData)); /* 427 */
-    char * (*tcl_AttemptAlloc) _ANSI_ARGS_((unsigned int size)); /* 428 */
-    char * (*tcl_AttemptDbCkalloc) _ANSI_ARGS_((unsigned int size, CONST char *file, int line)); /* 429 */
-    char * (*tcl_AttemptRealloc) _ANSI_ARGS_((char *ptr, unsigned int size)); /* 430 */
-    char * (*tcl_AttemptDbCkrealloc) _ANSI_ARGS_((char *ptr, unsigned int size, CONST char *file, int line)); /* 431 */
-    int (*tcl_AttemptSetObjLength) _ANSI_ARGS_((Tcl_Obj *objPtr, int length)); /* 432 */
-    Tcl_ThreadId (*tcl_GetChannelThread) _ANSI_ARGS_((Tcl_Channel channel)); /* 433 */
-    Tcl_UniChar * (*tcl_GetUnicodeFromObj) _ANSI_ARGS_((Tcl_Obj *objPtr, int *lengthPtr)); /* 434 */
-    int (*tcl_GetMathFuncInfo) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, int *numArgsPtr, Tcl_ValueType **argTypesPtr, Tcl_MathProc **procPtr, ClientData *clientDataPtr)); /* 435 */
-    Tcl_Obj * (*tcl_ListMathFuncs) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *pattern)); /* 436 */
-    Tcl_Obj * (*tcl_SubstObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, int flags)); /* 437 */
-    int (*tcl_DetachChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel channel)); /* 438 */
-    int (*tcl_IsStandardChannel) _ANSI_ARGS_((Tcl_Channel channel)); /* 439 */
-    int (*tcl_FSCopyFile) _ANSI_ARGS_((Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr)); /* 440 */
-    int (*tcl_FSCopyDirectory) _ANSI_ARGS_((Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr)); /* 441 */
-    int (*tcl_FSCreateDirectory) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 442 */
-    int (*tcl_FSDeleteFile) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 443 */
-    int (*tcl_FSLoadFile) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr, CONST char *sym1, CONST char *sym2, Tcl_PackageInitProc **proc1Ptr, Tcl_PackageInitProc **proc2Ptr, Tcl_LoadHandle *handlePtr, Tcl_FSUnloadFileProc **unloadProcPtr)); /* 444 */
-    int (*tcl_FSMatchInDirectory) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *result, Tcl_Obj *pathPtr, CONST char *pattern, Tcl_GlobTypeData *types)); /* 445 */
-    Tcl_Obj * (*tcl_FSLink) _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_Obj *toPtr, int linkAction)); /* 446 */
-    int (*tcl_FSRemoveDirectory) _ANSI_ARGS_((Tcl_Obj *pathPtr, int recursive, Tcl_Obj **errorPtr)); /* 447 */
-    int (*tcl_FSRenameFile) _ANSI_ARGS_((Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr)); /* 448 */
-    int (*tcl_FSLstat) _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_StatBuf *buf)); /* 449 */
-    int (*tcl_FSUtime) _ANSI_ARGS_((Tcl_Obj *pathPtr, struct utimbuf *tval)); /* 450 */
-    int (*tcl_FSFileAttrsGet) _ANSI_ARGS_((Tcl_Interp *interp, int index, Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef)); /* 451 */
-    int (*tcl_FSFileAttrsSet) _ANSI_ARGS_((Tcl_Interp *interp, int index, Tcl_Obj *pathPtr, Tcl_Obj *objPtr)); /* 452 */
-    CONST char ** (*tcl_FSFileAttrStrings) _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef)); /* 453 */
-    int (*tcl_FSStat) _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_StatBuf *buf)); /* 454 */
-    int (*tcl_FSAccess) _ANSI_ARGS_((Tcl_Obj *pathPtr, int mode)); /* 455 */
-    Tcl_Channel (*tcl_FSOpenFileChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr, CONST char *modeString, int permissions)); /* 456 */
-    Tcl_Obj * (*tcl_FSGetCwd) _ANSI_ARGS_((Tcl_Interp *interp)); /* 457 */
-    int (*tcl_FSChdir) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 458 */
-    int (*tcl_FSConvertToPathType) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr)); /* 459 */
-    Tcl_Obj * (*tcl_FSJoinPath) _ANSI_ARGS_((Tcl_Obj *listObj, int elements)); /* 460 */
-    Tcl_Obj * (*tcl_FSSplitPath) _ANSI_ARGS_((Tcl_Obj *pathPtr, int *lenPtr)); /* 461 */
-    int (*tcl_FSEqualPaths) _ANSI_ARGS_((Tcl_Obj *firstPtr, Tcl_Obj *secondPtr)); /* 462 */
-    Tcl_Obj * (*tcl_FSGetNormalizedPath) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr)); /* 463 */
-    Tcl_Obj * (*tcl_FSJoinToPath) _ANSI_ARGS_((Tcl_Obj *pathPtr, int objc, Tcl_Obj *CONST objv[])); /* 464 */
-    ClientData (*tcl_FSGetInternalRep) _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_Filesystem *fsPtr)); /* 465 */
-    Tcl_Obj * (*tcl_FSGetTranslatedPath) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr)); /* 466 */
-    int (*tcl_FSEvalFile) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *fileName)); /* 467 */
-    Tcl_Obj * (*tcl_FSNewNativePath) _ANSI_ARGS_((Tcl_Filesystem *fromFilesystem, ClientData clientData)); /* 468 */
-    CONST char * (*tcl_FSGetNativePath) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 469 */
-    Tcl_Obj * (*tcl_FSFileSystemInfo) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 470 */
-    Tcl_Obj * (*tcl_FSPathSeparator) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 471 */
-    Tcl_Obj * (*tcl_FSListVolumes) _ANSI_ARGS_((void)); /* 472 */
-    int (*tcl_FSRegister) _ANSI_ARGS_((ClientData clientData, Tcl_Filesystem *fsPtr)); /* 473 */
-    int (*tcl_FSUnregister) _ANSI_ARGS_((Tcl_Filesystem *fsPtr)); /* 474 */
-    ClientData (*tcl_FSData) _ANSI_ARGS_((Tcl_Filesystem *fsPtr)); /* 475 */
-    CONST char * (*tcl_FSGetTranslatedStringPath) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *pathPtr)); /* 476 */
-    Tcl_Filesystem * (*tcl_FSGetFileSystemForPath) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 477 */
-    Tcl_PathType (*tcl_FSGetPathType) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 478 */
-    int (*tcl_OutputBuffered) _ANSI_ARGS_((Tcl_Channel chan)); /* 479 */
-    void (*tcl_FSMountsChanged) _ANSI_ARGS_((Tcl_Filesystem *fsPtr)); /* 480 */
-    int (*tcl_EvalTokensStandard) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Token *tokenPtr, int count)); /* 481 */
-    void (*tcl_GetTime) _ANSI_ARGS_((Tcl_Time *timeBuf)); /* 482 */
-    Tcl_Trace (*tcl_CreateObjTrace) _ANSI_ARGS_((Tcl_Interp *interp, int level, int flags, Tcl_CmdObjTraceProc *objProc, ClientData clientData, Tcl_CmdObjTraceDeleteProc *delProc)); /* 483 */
-    int (*tcl_GetCommandInfoFromToken) _ANSI_ARGS_((Tcl_Command token, Tcl_CmdInfo *infoPtr)); /* 484 */
-    int (*tcl_SetCommandInfoFromToken) _ANSI_ARGS_((Tcl_Command token, CONST Tcl_CmdInfo *infoPtr)); /* 485 */
-    Tcl_Obj * (*tcl_DbNewWideIntObj) _ANSI_ARGS_((Tcl_WideInt wideValue, CONST char *file, int line)); /* 486 */
-    int (*tcl_GetWideIntFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_WideInt *widePtr)); /* 487 */
-    Tcl_Obj * (*tcl_NewWideIntObj) _ANSI_ARGS_((Tcl_WideInt wideValue)); /* 488 */
-    void (*tcl_SetWideIntObj) _ANSI_ARGS_((Tcl_Obj *objPtr, Tcl_WideInt wideValue)); /* 489 */
-    Tcl_StatBuf * (*tcl_AllocStatBuf) _ANSI_ARGS_((void)); /* 490 */
-    Tcl_WideInt (*tcl_Seek) _ANSI_ARGS_((Tcl_Channel chan, Tcl_WideInt offset, int mode)); /* 491 */
-    Tcl_WideInt (*tcl_Tell) _ANSI_ARGS_((Tcl_Channel chan)); /* 492 */
-    Tcl_DriverWideSeekProc * (*tcl_ChannelWideSeekProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 493 */
-    VOID *reserved494;
-    VOID *reserved495;
-    VOID *reserved496;
-    VOID *reserved497;
-    VOID *reserved498;
-    VOID *reserved499;
-    VOID *reserved500;
-    VOID *reserved501;
-    VOID *reserved502;
-    VOID *reserved503;
-    VOID *reserved504;
-    VOID *reserved505;
-    VOID *reserved506;
-    VOID *reserved507;
-    VOID *reserved508;
-    VOID *reserved509;
-    VOID *reserved510;
-    VOID *reserved511;
-    VOID *reserved512;
-    VOID *reserved513;
-    VOID *reserved514;
-    VOID *reserved515;
-    VOID *reserved516;
-    VOID *reserved517;
-    VOID *reserved518;
-    VOID *reserved519;
-    VOID *reserved520;
-    VOID *reserved521;
-    VOID *reserved522;
-    VOID *reserved523;
-    VOID *reserved524;
-    VOID *reserved525;
-    VOID *reserved526;
-    VOID *reserved527;
-    VOID *reserved528;
-    VOID *reserved529;
-    VOID *reserved530;
-    VOID *reserved531;
-    VOID *reserved532;
-    VOID *reserved533;
-    VOID *reserved534;
-    VOID *reserved535;
-    VOID *reserved536;
-    VOID *reserved537;
-    VOID *reserved538;
-    VOID *reserved539;
-    VOID *reserved540;
-    VOID *reserved541;
-    VOID *reserved542;
-    VOID *reserved543;
-    VOID *reserved544;
-    VOID *reserved545;
-    VOID *reserved546;
-    VOID *reserved547;
-    VOID *reserved548;
-    VOID *reserved549;
-    VOID *reserved550;
-    VOID *reserved551;
-    VOID *reserved552;
-    VOID *reserved553;
-    Tcl_DriverThreadActionProc * (*tcl_ChannelThreadActionProc) _ANSI_ARGS_((Tcl_ChannelType *chanTypePtr)); /* 554 */
-    VOID *reserved555;
-    VOID *reserved556;
-    VOID *reserved557;
-    VOID *reserved558;
-    VOID *reserved559;
-    VOID *reserved560;
-    VOID *reserved561;
-    VOID *reserved562;
-    VOID *reserved563;
-    VOID *reserved564;
-    VOID *reserved565;
-    VOID *reserved566;
-    VOID *reserved567;
-    VOID *reserved568;
-    VOID *reserved569;
-    VOID *reserved570;
-    VOID *reserved571;
-    VOID *reserved572;
-    int (*tcl_PkgRequireProc) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, int objc, Tcl_Obj *CONST objv[], ClientData *clientDataPtr)); /* 573 */
-    VOID *reserved574;
-    VOID *reserved575;
-    VOID *reserved576;
-    VOID *reserved577;
-    VOID *reserved578;
-    VOID *reserved579;
+    void (*tcl_AppendObjToObj) (Tcl_Obj *objPtr, Tcl_Obj *appendObjPtr); /* 286 */
+    Tcl_Encoding (*tcl_CreateEncoding) (CONST Tcl_EncodingType *typePtr); /* 287 */
+    void (*tcl_CreateThreadExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 288 */
+    void (*tcl_DeleteThreadExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 289 */
+    void (*tcl_DiscardResult) (Tcl_SavedResult *statePtr); /* 290 */
+    int (*tcl_EvalEx) (Tcl_Interp *interp, CONST char *script, int numBytes, int flags); /* 291 */
+    int (*tcl_EvalObjv) (Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags); /* 292 */
+    int (*tcl_EvalObjEx) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 293 */
+    void (*tcl_ExitThread) (int status); /* 294 */
+    int (*tcl_ExternalToUtf) (Tcl_Interp *interp, Tcl_Encoding encoding, CONST char *src, int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst, int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr); /* 295 */
+    char * (*tcl_ExternalToUtfDString) (Tcl_Encoding encoding, CONST char *src, int srcLen, Tcl_DString *dsPtr); /* 296 */
+    void (*tcl_FinalizeThread) (void); /* 297 */
+    void (*tcl_FinalizeNotifier) (ClientData clientData); /* 298 */
+    void (*tcl_FreeEncoding) (Tcl_Encoding encoding); /* 299 */
+    Tcl_ThreadId (*tcl_GetCurrentThread) (void); /* 300 */
+    Tcl_Encoding (*tcl_GetEncoding) (Tcl_Interp *interp, CONST char *name); /* 301 */
+    CONST84_RETURN char * (*tcl_GetEncodingName) (Tcl_Encoding encoding); /* 302 */
+    void (*tcl_GetEncodingNames) (Tcl_Interp *interp); /* 303 */
+    int (*tcl_GetIndexFromObjStruct) (Tcl_Interp *interp, Tcl_Obj *objPtr, CONST VOID *tablePtr, int offset, CONST char *msg, int flags, int *indexPtr); /* 304 */
+    VOID * (*tcl_GetThreadData) (Tcl_ThreadDataKey *keyPtr, int size); /* 305 */
+    Tcl_Obj * (*tcl_GetVar2Ex) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags); /* 306 */
+    ClientData (*tcl_InitNotifier) (void); /* 307 */
+    void (*tcl_MutexLock) (Tcl_Mutex *mutexPtr); /* 308 */
+    void (*tcl_MutexUnlock) (Tcl_Mutex *mutexPtr); /* 309 */
+    void (*tcl_ConditionNotify) (Tcl_Condition *condPtr); /* 310 */
+    void (*tcl_ConditionWait) (Tcl_Condition *condPtr, Tcl_Mutex *mutexPtr, Tcl_Time *timePtr); /* 311 */
+    int (*tcl_NumUtfChars) (CONST char *src, int length); /* 312 */
+    int (*tcl_ReadChars) (Tcl_Channel channel, Tcl_Obj *objPtr, int charsToRead, int appendFlag); /* 313 */
+    void (*tcl_RestoreResult) (Tcl_Interp *interp, Tcl_SavedResult *statePtr); /* 314 */
+    void (*tcl_SaveResult) (Tcl_Interp *interp, Tcl_SavedResult *statePtr); /* 315 */
+    int (*tcl_SetSystemEncoding) (Tcl_Interp *interp, CONST char *name); /* 316 */
+    Tcl_Obj * (*tcl_SetVar2Ex) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, Tcl_Obj *newValuePtr, int flags); /* 317 */
+    void (*tcl_ThreadAlert) (Tcl_ThreadId threadId); /* 318 */
+    void (*tcl_ThreadQueueEvent) (Tcl_ThreadId threadId, Tcl_Event *evPtr, Tcl_QueuePosition position); /* 319 */
+    Tcl_UniChar (*tcl_UniCharAtIndex) (CONST char *src, int index); /* 320 */
+    Tcl_UniChar (*tcl_UniCharToLower) (int ch); /* 321 */
+    Tcl_UniChar (*tcl_UniCharToTitle) (int ch); /* 322 */
+    Tcl_UniChar (*tcl_UniCharToUpper) (int ch); /* 323 */
+    int (*tcl_UniCharToUtf) (int ch, char *buf); /* 324 */
+    CONST84_RETURN char * (*tcl_UtfAtIndex) (CONST char *src, int index); /* 325 */
+    int (*tcl_UtfCharComplete) (CONST char *src, int length); /* 326 */
+    int (*tcl_UtfBackslash) (CONST char *src, int *readPtr, char *dst); /* 327 */
+    CONST84_RETURN char * (*tcl_UtfFindFirst) (CONST char *src, int ch); /* 328 */
+    CONST84_RETURN char * (*tcl_UtfFindLast) (CONST char *src, int ch); /* 329 */
+    CONST84_RETURN char * (*tcl_UtfNext) (CONST char *src); /* 330 */
+    CONST84_RETURN char * (*tcl_UtfPrev) (CONST char *src, CONST char *start); /* 331 */
+    int (*tcl_UtfToExternal) (Tcl_Interp *interp, Tcl_Encoding encoding, CONST char *src, int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst, int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr); /* 332 */
+    char * (*tcl_UtfToExternalDString) (Tcl_Encoding encoding, CONST char *src, int srcLen, Tcl_DString *dsPtr); /* 333 */
+    int (*tcl_UtfToLower) (char *src); /* 334 */
+    int (*tcl_UtfToTitle) (char *src); /* 335 */
+    int (*tcl_UtfToUniChar) (CONST char *src, Tcl_UniChar *chPtr); /* 336 */
+    int (*tcl_UtfToUpper) (char *src); /* 337 */
+    int (*tcl_WriteChars) (Tcl_Channel chan, CONST char *src, int srcLen); /* 338 */
+    int (*tcl_WriteObj) (Tcl_Channel chan, Tcl_Obj *objPtr); /* 339 */
+    char * (*tcl_GetString) (Tcl_Obj *objPtr); /* 340 */
+    CONST84_RETURN char * (*tcl_GetDefaultEncodingDir) (void); /* 341 */
+    void (*tcl_SetDefaultEncodingDir) (CONST char *path); /* 342 */
+    void (*tcl_AlertNotifier) (ClientData clientData); /* 343 */
+    void (*tcl_ServiceModeHook) (int mode); /* 344 */
+    int (*tcl_UniCharIsAlnum) (int ch); /* 345 */
+    int (*tcl_UniCharIsAlpha) (int ch); /* 346 */
+    int (*tcl_UniCharIsDigit) (int ch); /* 347 */
+    int (*tcl_UniCharIsLower) (int ch); /* 348 */
+    int (*tcl_UniCharIsSpace) (int ch); /* 349 */
+    int (*tcl_UniCharIsUpper) (int ch); /* 350 */
+    int (*tcl_UniCharIsWordChar) (int ch); /* 351 */
+    int (*tcl_UniCharLen) (CONST Tcl_UniChar *uniStr); /* 352 */
+    int (*tcl_UniCharNcmp) (CONST Tcl_UniChar *ucs, CONST Tcl_UniChar *uct, unsigned long numChars); /* 353 */
+    char * (*tcl_UniCharToUtfDString) (CONST Tcl_UniChar *uniStr, int uniLength, Tcl_DString *dsPtr); /* 354 */
+    Tcl_UniChar * (*tcl_UtfToUniCharDString) (CONST char *src, int length, Tcl_DString *dsPtr); /* 355 */
+    Tcl_RegExp (*tcl_GetRegExpFromObj) (Tcl_Interp *interp, Tcl_Obj *patObj, int flags); /* 356 */
+    Tcl_Obj * (*tcl_EvalTokens) (Tcl_Interp *interp, Tcl_Token *tokenPtr, int count); /* 357 */
+    void (*tcl_FreeParse) (Tcl_Parse *parsePtr); /* 358 */
+    void (*tcl_LogCommandInfo) (Tcl_Interp *interp, CONST char *script, CONST char *command, int length); /* 359 */
+    int (*tcl_ParseBraces) (Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr, int append, CONST84 char **termPtr); /* 360 */
+    int (*tcl_ParseCommand) (Tcl_Interp *interp, CONST char *start, int numBytes, int nested, Tcl_Parse *parsePtr); /* 361 */
+    int (*tcl_ParseExpr) (Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr); /* 362 */
+    int (*tcl_ParseQuotedString) (Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr, int append, CONST84 char **termPtr); /* 363 */
+    int (*tcl_ParseVarName) (Tcl_Interp *interp, CONST char *start, int numBytes, Tcl_Parse *parsePtr, int append); /* 364 */
+    char * (*tcl_GetCwd) (Tcl_Interp *interp, Tcl_DString *cwdPtr); /* 365 */
+    int (*tcl_Chdir) (CONST char *dirName); /* 366 */
+    int (*tcl_Access) (CONST char *path, int mode); /* 367 */
+    int (*tcl_Stat) (CONST char *path, struct stat *bufPtr); /* 368 */
+    int (*tcl_UtfNcmp) (CONST char *s1, CONST char *s2, unsigned long n); /* 369 */
+    int (*tcl_UtfNcasecmp) (CONST char *s1, CONST char *s2, unsigned long n); /* 370 */
+    int (*tcl_StringCaseMatch) (CONST char *str, CONST char *pattern, int nocase); /* 371 */
+    int (*tcl_UniCharIsControl) (int ch); /* 372 */
+    int (*tcl_UniCharIsGraph) (int ch); /* 373 */
+    int (*tcl_UniCharIsPrint) (int ch); /* 374 */
+    int (*tcl_UniCharIsPunct) (int ch); /* 375 */
+    int (*tcl_RegExpExecObj) (Tcl_Interp *interp, Tcl_RegExp regexp, Tcl_Obj *textObj, int offset, int nmatches, int flags); /* 376 */
+    void (*tcl_RegExpGetInfo) (Tcl_RegExp regexp, Tcl_RegExpInfo *infoPtr); /* 377 */
+    Tcl_Obj * (*tcl_NewUnicodeObj) (CONST Tcl_UniChar *unicode, int numChars); /* 378 */
+    void (*tcl_SetUnicodeObj) (Tcl_Obj *objPtr, CONST Tcl_UniChar *unicode, int numChars); /* 379 */
+    int (*tcl_GetCharLength) (Tcl_Obj *objPtr); /* 380 */
+    Tcl_UniChar (*tcl_GetUniChar) (Tcl_Obj *objPtr, int index); /* 381 */
+    Tcl_UniChar * (*tcl_GetUnicode) (Tcl_Obj *objPtr); /* 382 */
+    Tcl_Obj * (*tcl_GetRange) (Tcl_Obj *objPtr, int first, int last); /* 383 */
+    void (*tcl_AppendUnicodeToObj) (Tcl_Obj *objPtr, CONST Tcl_UniChar *unicode, int length); /* 384 */
+    int (*tcl_RegExpMatchObj) (Tcl_Interp *interp, Tcl_Obj *textObj, Tcl_Obj *patternObj); /* 385 */
+    void (*tcl_SetNotifier) (Tcl_NotifierProcs *notifierProcPtr); /* 386 */
+    Tcl_Mutex * (*tcl_GetAllocMutex) (void); /* 387 */
+    int (*tcl_GetChannelNames) (Tcl_Interp *interp); /* 388 */
+    int (*tcl_GetChannelNamesEx) (Tcl_Interp *interp, CONST char *pattern); /* 389 */
+    int (*tcl_ProcObjCmd) (ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]); /* 390 */
+    void (*tcl_ConditionFinalize) (Tcl_Condition *condPtr); /* 391 */
+    void (*tcl_MutexFinalize) (Tcl_Mutex *mutex); /* 392 */
+    int (*tcl_CreateThread) (Tcl_ThreadId *idPtr, Tcl_ThreadCreateProc proc, ClientData clientData, int stackSize, int flags); /* 393 */
+    int (*tcl_ReadRaw) (Tcl_Channel chan, char *dst, int bytesToRead); /* 394 */
+    int (*tcl_WriteRaw) (Tcl_Channel chan, CONST char *src, int srcLen); /* 395 */
+    Tcl_Channel (*tcl_GetTopChannel) (Tcl_Channel chan); /* 396 */
+    int (*tcl_ChannelBuffered) (Tcl_Channel chan); /* 397 */
+    CONST84_RETURN char * (*tcl_ChannelName) (CONST Tcl_ChannelType *chanTypePtr); /* 398 */
+    Tcl_ChannelTypeVersion (*tcl_ChannelVersion) (CONST Tcl_ChannelType *chanTypePtr); /* 399 */
+    Tcl_DriverBlockModeProc * (*tcl_ChannelBlockModeProc) (CONST Tcl_ChannelType *chanTypePtr); /* 400 */
+    Tcl_DriverCloseProc * (*tcl_ChannelCloseProc) (CONST Tcl_ChannelType *chanTypePtr); /* 401 */
+    Tcl_DriverClose2Proc * (*tcl_ChannelClose2Proc) (CONST Tcl_ChannelType *chanTypePtr); /* 402 */
+    Tcl_DriverInputProc * (*tcl_ChannelInputProc) (CONST Tcl_ChannelType *chanTypePtr); /* 403 */
+    Tcl_DriverOutputProc * (*tcl_ChannelOutputProc) (CONST Tcl_ChannelType *chanTypePtr); /* 404 */
+    Tcl_DriverSeekProc * (*tcl_ChannelSeekProc) (CONST Tcl_ChannelType *chanTypePtr); /* 405 */
+    Tcl_DriverSetOptionProc * (*tcl_ChannelSetOptionProc) (CONST Tcl_ChannelType *chanTypePtr); /* 406 */
+    Tcl_DriverGetOptionProc * (*tcl_ChannelGetOptionProc) (CONST Tcl_ChannelType *chanTypePtr); /* 407 */
+    Tcl_DriverWatchProc * (*tcl_ChannelWatchProc) (CONST Tcl_ChannelType *chanTypePtr); /* 408 */
+    Tcl_DriverGetHandleProc * (*tcl_ChannelGetHandleProc) (CONST Tcl_ChannelType *chanTypePtr); /* 409 */
+    Tcl_DriverFlushProc * (*tcl_ChannelFlushProc) (CONST Tcl_ChannelType *chanTypePtr); /* 410 */
+    Tcl_DriverHandlerProc * (*tcl_ChannelHandlerProc) (CONST Tcl_ChannelType *chanTypePtr); /* 411 */
+    int (*tcl_JoinThread) (Tcl_ThreadId threadId, int *result); /* 412 */
+    int (*tcl_IsChannelShared) (Tcl_Channel channel); /* 413 */
+    int (*tcl_IsChannelRegistered) (Tcl_Interp *interp, Tcl_Channel channel); /* 414 */
+    void (*tcl_CutChannel) (Tcl_Channel channel); /* 415 */
+    void (*tcl_SpliceChannel) (Tcl_Channel channel); /* 416 */
+    void (*tcl_ClearChannelHandlers) (Tcl_Channel channel); /* 417 */
+    int (*tcl_IsChannelExisting) (CONST char *channelName); /* 418 */
+    int (*tcl_UniCharNcasecmp) (CONST Tcl_UniChar *ucs, CONST Tcl_UniChar *uct, unsigned long numChars); /* 419 */
+    int (*tcl_UniCharCaseMatch) (CONST Tcl_UniChar *uniStr, CONST Tcl_UniChar *uniPattern, int nocase); /* 420 */
+    Tcl_HashEntry * (*tcl_FindHashEntry) (Tcl_HashTable *tablePtr, CONST char *key); /* 421 */
+    Tcl_HashEntry * (*tcl_CreateHashEntry) (Tcl_HashTable *tablePtr, CONST char *key, int *newPtr); /* 422 */
+    void (*tcl_InitCustomHashTable) (Tcl_HashTable *tablePtr, int keyType, Tcl_HashKeyType *typePtr); /* 423 */
+    void (*tcl_InitObjHashTable) (Tcl_HashTable *tablePtr); /* 424 */
+    ClientData (*tcl_CommandTraceInfo) (Tcl_Interp *interp, CONST char *varName, int flags, Tcl_CommandTraceProc *procPtr, ClientData prevClientData); /* 425 */
+    int (*tcl_TraceCommand) (Tcl_Interp *interp, CONST char *varName, int flags, Tcl_CommandTraceProc *proc, ClientData clientData); /* 426 */
+    void (*tcl_UntraceCommand) (Tcl_Interp *interp, CONST char *varName, int flags, Tcl_CommandTraceProc *proc, ClientData clientData); /* 427 */
+    char * (*tcl_AttemptAlloc) (unsigned int size); /* 428 */
+    char * (*tcl_AttemptDbCkalloc) (unsigned int size, CONST char *file, int line); /* 429 */
+    char * (*tcl_AttemptRealloc) (char *ptr, unsigned int size); /* 430 */
+    char * (*tcl_AttemptDbCkrealloc) (char *ptr, unsigned int size, CONST char *file, int line); /* 431 */
+    int (*tcl_AttemptSetObjLength) (Tcl_Obj *objPtr, int length); /* 432 */
+    Tcl_ThreadId (*tcl_GetChannelThread) (Tcl_Channel channel); /* 433 */
+    Tcl_UniChar * (*tcl_GetUnicodeFromObj) (Tcl_Obj *objPtr, int *lengthPtr); /* 434 */
+    int (*tcl_GetMathFuncInfo) (Tcl_Interp *interp, CONST char *name, int *numArgsPtr, Tcl_ValueType **argTypesPtr, Tcl_MathProc **procPtr, ClientData *clientDataPtr); /* 435 */
+    Tcl_Obj * (*tcl_ListMathFuncs) (Tcl_Interp *interp, CONST char *pattern); /* 436 */
+    Tcl_Obj * (*tcl_SubstObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 437 */
+    int (*tcl_DetachChannel) (Tcl_Interp *interp, Tcl_Channel channel); /* 438 */
+    int (*tcl_IsStandardChannel) (Tcl_Channel channel); /* 439 */
+    int (*tcl_FSCopyFile) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr); /* 440 */
+    int (*tcl_FSCopyDirectory) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr); /* 441 */
+    int (*tcl_FSCreateDirectory) (Tcl_Obj *pathPtr); /* 442 */
+    int (*tcl_FSDeleteFile) (Tcl_Obj *pathPtr); /* 443 */
+    int (*tcl_FSLoadFile) (Tcl_Interp *interp, Tcl_Obj *pathPtr, CONST char *sym1, CONST char *sym2, Tcl_PackageInitProc **proc1Ptr, Tcl_PackageInitProc **proc2Ptr, Tcl_LoadHandle *handlePtr, Tcl_FSUnloadFileProc **unloadProcPtr); /* 444 */
+    int (*tcl_FSMatchInDirectory) (Tcl_Interp *interp, Tcl_Obj *result, Tcl_Obj *pathPtr, CONST char *pattern, Tcl_GlobTypeData *types); /* 445 */
+    Tcl_Obj * (*tcl_FSLink) (Tcl_Obj *pathPtr, Tcl_Obj *toPtr, int linkAction); /* 446 */
+    int (*tcl_FSRemoveDirectory) (Tcl_Obj *pathPtr, int recursive, Tcl_Obj **errorPtr); /* 447 */
+    int (*tcl_FSRenameFile) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr); /* 448 */
+    int (*tcl_FSLstat) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf); /* 449 */
+    int (*tcl_FSUtime) (Tcl_Obj *pathPtr, struct utimbuf *tval); /* 450 */
+    int (*tcl_FSFileAttrsGet) (Tcl_Interp *interp, int index, Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef); /* 451 */
+    int (*tcl_FSFileAttrsSet) (Tcl_Interp *interp, int index, Tcl_Obj *pathPtr, Tcl_Obj *objPtr); /* 452 */
+    CONST char ** (*tcl_FSFileAttrStrings) (Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef); /* 453 */
+    int (*tcl_FSStat) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf); /* 454 */
+    int (*tcl_FSAccess) (Tcl_Obj *pathPtr, int mode); /* 455 */
+    Tcl_Channel (*tcl_FSOpenFileChannel) (Tcl_Interp *interp, Tcl_Obj *pathPtr, CONST char *modeString, int permissions); /* 456 */
+    Tcl_Obj * (*tcl_FSGetCwd) (Tcl_Interp *interp); /* 457 */
+    int (*tcl_FSChdir) (Tcl_Obj *pathPtr); /* 458 */
+    int (*tcl_FSConvertToPathType) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 459 */
+    Tcl_Obj * (*tcl_FSJoinPath) (Tcl_Obj *listObj, int elements); /* 460 */
+    Tcl_Obj * (*tcl_FSSplitPath) (Tcl_Obj *pathPtr, int *lenPtr); /* 461 */
+    int (*tcl_FSEqualPaths) (Tcl_Obj *firstPtr, Tcl_Obj *secondPtr); /* 462 */
+    Tcl_Obj * (*tcl_FSGetNormalizedPath) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 463 */
+    Tcl_Obj * (*tcl_FSJoinToPath) (Tcl_Obj *pathPtr, int objc, Tcl_Obj *CONST objv[]); /* 464 */
+    ClientData (*tcl_FSGetInternalRep) (Tcl_Obj *pathPtr, Tcl_Filesystem *fsPtr); /* 465 */
+    Tcl_Obj * (*tcl_FSGetTranslatedPath) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 466 */
+    int (*tcl_FSEvalFile) (Tcl_Interp *interp, Tcl_Obj *fileName); /* 467 */
+    Tcl_Obj * (*tcl_FSNewNativePath) (Tcl_Filesystem *fromFilesystem, ClientData clientData); /* 468 */
+    CONST char * (*tcl_FSGetNativePath) (Tcl_Obj *pathPtr); /* 469 */
+    Tcl_Obj * (*tcl_FSFileSystemInfo) (Tcl_Obj *pathPtr); /* 470 */
+    Tcl_Obj * (*tcl_FSPathSeparator) (Tcl_Obj *pathPtr); /* 471 */
+    Tcl_Obj * (*tcl_FSListVolumes) (void); /* 472 */
+    int (*tcl_FSRegister) (ClientData clientData, Tcl_Filesystem *fsPtr); /* 473 */
+    int (*tcl_FSUnregister) (Tcl_Filesystem *fsPtr); /* 474 */
+    ClientData (*tcl_FSData) (Tcl_Filesystem *fsPtr); /* 475 */
+    CONST char * (*tcl_FSGetTranslatedStringPath) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 476 */
+    Tcl_Filesystem * (*tcl_FSGetFileSystemForPath) (Tcl_Obj *pathPtr); /* 477 */
+    Tcl_PathType (*tcl_FSGetPathType) (Tcl_Obj *pathPtr); /* 478 */
+    int (*tcl_OutputBuffered) (Tcl_Channel chan); /* 479 */
+    void (*tcl_FSMountsChanged) (Tcl_Filesystem *fsPtr); /* 480 */
+    int (*tcl_EvalTokensStandard) (Tcl_Interp *interp, Tcl_Token *tokenPtr, int count); /* 481 */
+    void (*tcl_GetTime) (Tcl_Time *timeBuf); /* 482 */
+    Tcl_Trace (*tcl_CreateObjTrace) (Tcl_Interp *interp, int level, int flags, Tcl_CmdObjTraceProc *objProc, ClientData clientData, Tcl_CmdObjTraceDeleteProc *delProc); /* 483 */
+    int (*tcl_GetCommandInfoFromToken) (Tcl_Command token, Tcl_CmdInfo *infoPtr); /* 484 */
+    int (*tcl_SetCommandInfoFromToken) (Tcl_Command token, CONST Tcl_CmdInfo *infoPtr); /* 485 */
+    Tcl_Obj * (*tcl_DbNewWideIntObj) (Tcl_WideInt wideValue, CONST char *file, int line); /* 486 */
+    int (*tcl_GetWideIntFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_WideInt *widePtr); /* 487 */
+    Tcl_Obj * (*tcl_NewWideIntObj) (Tcl_WideInt wideValue); /* 488 */
+    void (*tcl_SetWideIntObj) (Tcl_Obj *objPtr, Tcl_WideInt wideValue); /* 489 */
+    Tcl_StatBuf * (*tcl_AllocStatBuf) (void); /* 490 */
+    Tcl_WideInt (*tcl_Seek) (Tcl_Channel chan, Tcl_WideInt offset, int mode); /* 491 */
+    Tcl_WideInt (*tcl_Tell) (Tcl_Channel chan); /* 492 */
+    Tcl_DriverWideSeekProc * (*tcl_ChannelWideSeekProc) (CONST Tcl_ChannelType *chanTypePtr); /* 493 */
+    int (*tcl_DictObjPut) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr, Tcl_Obj *valuePtr); /* 494 */
+    int (*tcl_DictObjGet) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr, Tcl_Obj **valuePtrPtr); /* 495 */
+    int (*tcl_DictObjRemove) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr); /* 496 */
+    int (*tcl_DictObjSize) (Tcl_Interp *interp, Tcl_Obj *dictPtr, int *sizePtr); /* 497 */
+    int (*tcl_DictObjFirst) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_DictSearch *searchPtr, Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr, int *donePtr); /* 498 */
+    void (*tcl_DictObjNext) (Tcl_DictSearch *searchPtr, Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr, int *donePtr); /* 499 */
+    void (*tcl_DictObjDone) (Tcl_DictSearch *searchPtr); /* 500 */
+    int (*tcl_DictObjPutKeyList) (Tcl_Interp *interp, Tcl_Obj *dictPtr, int keyc, Tcl_Obj *CONST *keyv, Tcl_Obj *valuePtr); /* 501 */
+    int (*tcl_DictObjRemoveKeyList) (Tcl_Interp *interp, Tcl_Obj *dictPtr, int keyc, Tcl_Obj *CONST *keyv); /* 502 */
+    Tcl_Obj * (*tcl_NewDictObj) (void); /* 503 */
+    Tcl_Obj * (*tcl_DbNewDictObj) (CONST char *file, int line); /* 504 */
+    void (*tcl_RegisterConfig) (Tcl_Interp *interp, CONST char *pkgName, Tcl_Config *configuration, CONST char *valEncoding); /* 505 */
+    Tcl_Namespace * (*tcl_CreateNamespace) (Tcl_Interp *interp, CONST char *name, ClientData clientData, Tcl_NamespaceDeleteProc *deleteProc); /* 506 */
+    void (*tcl_DeleteNamespace) (Tcl_Namespace *nsPtr); /* 507 */
+    int (*tcl_AppendExportList) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *objPtr); /* 508 */
+    int (*tcl_Export) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern, int resetListFirst); /* 509 */
+    int (*tcl_Import) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern, int allowOverwrite); /* 510 */
+    int (*tcl_ForgetImport) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern); /* 511 */
+    Tcl_Namespace * (*tcl_GetCurrentNamespace) (Tcl_Interp *interp); /* 512 */
+    Tcl_Namespace * (*tcl_GetGlobalNamespace) (Tcl_Interp *interp); /* 513 */
+    Tcl_Namespace * (*tcl_FindNamespace) (Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags); /* 514 */
+    Tcl_Command (*tcl_FindCommand) (Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags); /* 515 */
+    Tcl_Command (*tcl_GetCommandFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 516 */
+    void (*tcl_GetCommandFullName) (Tcl_Interp *interp, Tcl_Command command, Tcl_Obj *objPtr); /* 517 */
+    int (*tcl_FSEvalFileEx) (Tcl_Interp *interp, Tcl_Obj *fileName, CONST char *encodingName); /* 518 */
+    Tcl_ExitProc * (*tcl_SetExitProc) (Tcl_ExitProc *proc); /* 519 */
+    void (*tcl_LimitAddHandler) (Tcl_Interp *interp, int type, Tcl_LimitHandlerProc *handlerProc, ClientData clientData, Tcl_LimitHandlerDeleteProc *deleteProc); /* 520 */
+    void (*tcl_LimitRemoveHandler) (Tcl_Interp *interp, int type, Tcl_LimitHandlerProc *handlerProc, ClientData clientData); /* 521 */
+    int (*tcl_LimitReady) (Tcl_Interp *interp); /* 522 */
+    int (*tcl_LimitCheck) (Tcl_Interp *interp); /* 523 */
+    int (*tcl_LimitExceeded) (Tcl_Interp *interp); /* 524 */
+    void (*tcl_LimitSetCommands) (Tcl_Interp *interp, int commandLimit); /* 525 */
+    void (*tcl_LimitSetTime) (Tcl_Interp *interp, Tcl_Time *timeLimitPtr); /* 526 */
+    void (*tcl_LimitSetGranularity) (Tcl_Interp *interp, int type, int granularity); /* 527 */
+    int (*tcl_LimitTypeEnabled) (Tcl_Interp *interp, int type); /* 528 */
+    int (*tcl_LimitTypeExceeded) (Tcl_Interp *interp, int type); /* 529 */
+    void (*tcl_LimitTypeSet) (Tcl_Interp *interp, int type); /* 530 */
+    void (*tcl_LimitTypeReset) (Tcl_Interp *interp, int type); /* 531 */
+    int (*tcl_LimitGetCommands) (Tcl_Interp *interp); /* 532 */
+    void (*tcl_LimitGetTime) (Tcl_Interp *interp, Tcl_Time *timeLimitPtr); /* 533 */
+    int (*tcl_LimitGetGranularity) (Tcl_Interp *interp, int type); /* 534 */
+    Tcl_InterpState (*tcl_SaveInterpState) (Tcl_Interp *interp, int status); /* 535 */
+    int (*tcl_RestoreInterpState) (Tcl_Interp *interp, Tcl_InterpState state); /* 536 */
+    void (*tcl_DiscardInterpState) (Tcl_InterpState state); /* 537 */
+    int (*tcl_SetReturnOptions) (Tcl_Interp *interp, Tcl_Obj *options); /* 538 */
+    Tcl_Obj * (*tcl_GetReturnOptions) (Tcl_Interp *interp, int result); /* 539 */
+    int (*tcl_IsEnsemble) (Tcl_Command token); /* 540 */
+    Tcl_Command (*tcl_CreateEnsemble) (Tcl_Interp *interp, CONST char *name, Tcl_Namespace *namespacePtr, int flags); /* 541 */
+    Tcl_Command (*tcl_FindEnsemble) (Tcl_Interp *interp, Tcl_Obj *cmdNameObj, int flags); /* 542 */
+    int (*tcl_SetEnsembleSubcommandList) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *subcmdList); /* 543 */
+    int (*tcl_SetEnsembleMappingDict) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *mapDict); /* 544 */
+    int (*tcl_SetEnsembleUnknownHandler) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *unknownList); /* 545 */
+    int (*tcl_SetEnsembleFlags) (Tcl_Interp *interp, Tcl_Command token, int flags); /* 546 */
+    int (*tcl_GetEnsembleSubcommandList) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **subcmdListPtr); /* 547 */
+    int (*tcl_GetEnsembleMappingDict) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **mapDictPtr); /* 548 */
+    int (*tcl_GetEnsembleUnknownHandler) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **unknownListPtr); /* 549 */
+    int (*tcl_GetEnsembleFlags) (Tcl_Interp *interp, Tcl_Command token, int *flagsPtr); /* 550 */
+    int (*tcl_GetEnsembleNamespace) (Tcl_Interp *interp, Tcl_Command token, Tcl_Namespace **namespacePtrPtr); /* 551 */
+    void (*tcl_SetTimeProc) (Tcl_GetTimeProc *getProc, Tcl_ScaleTimeProc *scaleProc, ClientData clientData); /* 552 */
+    void (*tcl_QueryTimeProc) (Tcl_GetTimeProc **getProc, Tcl_ScaleTimeProc **scaleProc, ClientData *clientData); /* 553 */
+    Tcl_DriverThreadActionProc * (*tcl_ChannelThreadActionProc) (CONST Tcl_ChannelType *chanTypePtr); /* 554 */
+    Tcl_Obj * (*tcl_NewBignumObj) (mp_int *value); /* 555 */
+    Tcl_Obj * (*tcl_DbNewBignumObj) (mp_int *value, CONST char *file, int line); /* 556 */
+    void (*tcl_SetBignumObj) (Tcl_Obj *obj, mp_int *value); /* 557 */
+    int (*tcl_GetBignumFromObj) (Tcl_Interp *interp, Tcl_Obj *obj, mp_int *value); /* 558 */
+    int (*tcl_TakeBignumFromObj) (Tcl_Interp *interp, Tcl_Obj *obj, mp_int *value); /* 559 */
+    int (*tcl_TruncateChannel) (Tcl_Channel chan, Tcl_WideInt length); /* 560 */
+    Tcl_DriverTruncateProc * (*tcl_ChannelTruncateProc) (CONST Tcl_ChannelType *chanTypePtr); /* 561 */
+    void (*tcl_SetChannelErrorInterp) (Tcl_Interp *interp, Tcl_Obj *msg); /* 562 */
+    void (*tcl_GetChannelErrorInterp) (Tcl_Interp *interp, Tcl_Obj **msg); /* 563 */
+    void (*tcl_SetChannelError) (Tcl_Channel chan, Tcl_Obj *msg); /* 564 */
+    void (*tcl_GetChannelError) (Tcl_Channel chan, Tcl_Obj **msg); /* 565 */
+    int (*tcl_InitBignumFromDouble) (Tcl_Interp *interp, double initval, mp_int *toInit); /* 566 */
+    Tcl_Obj * (*tcl_GetNamespaceUnknownHandler) (Tcl_Interp *interp, Tcl_Namespace *nsPtr); /* 567 */
+    int (*tcl_SetNamespaceUnknownHandler) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *handlerPtr); /* 568 */
+    int (*tcl_GetEncodingFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Encoding *encodingPtr); /* 569 */
+    Tcl_Obj * (*tcl_GetEncodingSearchPath) (void); /* 570 */
+    int (*tcl_SetEncodingSearchPath) (Tcl_Obj *searchPath); /* 571 */
+    CONST char * (*tcl_GetEncodingNameFromEnvironment) (Tcl_DString *bufPtr); /* 572 */
+    int (*tcl_PkgRequireProc) (Tcl_Interp *interp, CONST char *name, int objc, Tcl_Obj *CONST objv[], ClientData *clientDataPtr); /* 573 */
+    void (*tcl_AppendObjToErrorInfo) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 574 */
+    void (*tcl_AppendLimitedToObj) (Tcl_Obj *objPtr, CONST char *bytes, int length, int limit, CONST char *ellipsis); /* 575 */
+    Tcl_Obj * (*tcl_Format) (Tcl_Interp *interp, CONST char *format, int objc, Tcl_Obj *CONST objv[]); /* 576 */
+    int (*tcl_AppendFormatToObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, CONST char *format, int objc, Tcl_Obj *CONST objv[]); /* 577 */
+    Tcl_Obj * (*tcl_ObjPrintf) (CONST char *format, ...); /* 578 */
+    void (*tcl_AppendPrintfToObj) (Tcl_Obj *objPtr, CONST char *format, ...); /* 579 */
     VOID *reserved580;
     VOID *reserved581;
     VOID *reserved582;
@@ -2352,7 +4128,7 @@ typedef struct TclStubs {
     VOID *reserved627;
     VOID *reserved628;
     VOID *reserved629;
-    void (*tclUnusedStubEntry) _ANSI_ARGS_((void)); /* 630 */
+    void (*tclUnusedStubEntry) (void); /* 630 */
 } TclStubs;
 
 #ifdef __cplusplus
@@ -4363,98 +6139,350 @@ extern TclStubs *tclStubsPtr;
 #define Tcl_ChannelWideSeekProc \
 	(tclStubsPtr->tcl_ChannelWideSeekProc) /* 493 */
 #endif
-/* Slot 494 is reserved */
-/* Slot 495 is reserved */
-/* Slot 496 is reserved */
-/* Slot 497 is reserved */
-/* Slot 498 is reserved */
-/* Slot 499 is reserved */
-/* Slot 500 is reserved */
-/* Slot 501 is reserved */
-/* Slot 502 is reserved */
-/* Slot 503 is reserved */
-/* Slot 504 is reserved */
-/* Slot 505 is reserved */
-/* Slot 506 is reserved */
-/* Slot 507 is reserved */
-/* Slot 508 is reserved */
-/* Slot 509 is reserved */
-/* Slot 510 is reserved */
-/* Slot 511 is reserved */
-/* Slot 512 is reserved */
-/* Slot 513 is reserved */
-/* Slot 514 is reserved */
-/* Slot 515 is reserved */
-/* Slot 516 is reserved */
-/* Slot 517 is reserved */
-/* Slot 518 is reserved */
-/* Slot 519 is reserved */
-/* Slot 520 is reserved */
-/* Slot 521 is reserved */
-/* Slot 522 is reserved */
-/* Slot 523 is reserved */
-/* Slot 524 is reserved */
-/* Slot 525 is reserved */
-/* Slot 526 is reserved */
-/* Slot 527 is reserved */
-/* Slot 528 is reserved */
-/* Slot 529 is reserved */
-/* Slot 530 is reserved */
-/* Slot 531 is reserved */
-/* Slot 532 is reserved */
-/* Slot 533 is reserved */
-/* Slot 534 is reserved */
-/* Slot 535 is reserved */
-/* Slot 536 is reserved */
-/* Slot 537 is reserved */
-/* Slot 538 is reserved */
-/* Slot 539 is reserved */
-/* Slot 540 is reserved */
-/* Slot 541 is reserved */
-/* Slot 542 is reserved */
-/* Slot 543 is reserved */
-/* Slot 544 is reserved */
-/* Slot 545 is reserved */
-/* Slot 546 is reserved */
-/* Slot 547 is reserved */
-/* Slot 548 is reserved */
-/* Slot 549 is reserved */
-/* Slot 550 is reserved */
-/* Slot 551 is reserved */
-/* Slot 552 is reserved */
-/* Slot 553 is reserved */
+#ifndef Tcl_DictObjPut
+#define Tcl_DictObjPut \
+	(tclStubsPtr->tcl_DictObjPut) /* 494 */
+#endif
+#ifndef Tcl_DictObjGet
+#define Tcl_DictObjGet \
+	(tclStubsPtr->tcl_DictObjGet) /* 495 */
+#endif
+#ifndef Tcl_DictObjRemove
+#define Tcl_DictObjRemove \
+	(tclStubsPtr->tcl_DictObjRemove) /* 496 */
+#endif
+#ifndef Tcl_DictObjSize
+#define Tcl_DictObjSize \
+	(tclStubsPtr->tcl_DictObjSize) /* 497 */
+#endif
+#ifndef Tcl_DictObjFirst
+#define Tcl_DictObjFirst \
+	(tclStubsPtr->tcl_DictObjFirst) /* 498 */
+#endif
+#ifndef Tcl_DictObjNext
+#define Tcl_DictObjNext \
+	(tclStubsPtr->tcl_DictObjNext) /* 499 */
+#endif
+#ifndef Tcl_DictObjDone
+#define Tcl_DictObjDone \
+	(tclStubsPtr->tcl_DictObjDone) /* 500 */
+#endif
+#ifndef Tcl_DictObjPutKeyList
+#define Tcl_DictObjPutKeyList \
+	(tclStubsPtr->tcl_DictObjPutKeyList) /* 501 */
+#endif
+#ifndef Tcl_DictObjRemoveKeyList
+#define Tcl_DictObjRemoveKeyList \
+	(tclStubsPtr->tcl_DictObjRemoveKeyList) /* 502 */
+#endif
+#ifndef Tcl_NewDictObj
+#define Tcl_NewDictObj \
+	(tclStubsPtr->tcl_NewDictObj) /* 503 */
+#endif
+#ifndef Tcl_DbNewDictObj
+#define Tcl_DbNewDictObj \
+	(tclStubsPtr->tcl_DbNewDictObj) /* 504 */
+#endif
+#ifndef Tcl_RegisterConfig
+#define Tcl_RegisterConfig \
+	(tclStubsPtr->tcl_RegisterConfig) /* 505 */
+#endif
+#ifndef Tcl_CreateNamespace
+#define Tcl_CreateNamespace \
+	(tclStubsPtr->tcl_CreateNamespace) /* 506 */
+#endif
+#ifndef Tcl_DeleteNamespace
+#define Tcl_DeleteNamespace \
+	(tclStubsPtr->tcl_DeleteNamespace) /* 507 */
+#endif
+#ifndef Tcl_AppendExportList
+#define Tcl_AppendExportList \
+	(tclStubsPtr->tcl_AppendExportList) /* 508 */
+#endif
+#ifndef Tcl_Export
+#define Tcl_Export \
+	(tclStubsPtr->tcl_Export) /* 509 */
+#endif
+#ifndef Tcl_Import
+#define Tcl_Import \
+	(tclStubsPtr->tcl_Import) /* 510 */
+#endif
+#ifndef Tcl_ForgetImport
+#define Tcl_ForgetImport \
+	(tclStubsPtr->tcl_ForgetImport) /* 511 */
+#endif
+#ifndef Tcl_GetCurrentNamespace
+#define Tcl_GetCurrentNamespace \
+	(tclStubsPtr->tcl_GetCurrentNamespace) /* 512 */
+#endif
+#ifndef Tcl_GetGlobalNamespace
+#define Tcl_GetGlobalNamespace \
+	(tclStubsPtr->tcl_GetGlobalNamespace) /* 513 */
+#endif
+#ifndef Tcl_FindNamespace
+#define Tcl_FindNamespace \
+	(tclStubsPtr->tcl_FindNamespace) /* 514 */
+#endif
+#ifndef Tcl_FindCommand
+#define Tcl_FindCommand \
+	(tclStubsPtr->tcl_FindCommand) /* 515 */
+#endif
+#ifndef Tcl_GetCommandFromObj
+#define Tcl_GetCommandFromObj \
+	(tclStubsPtr->tcl_GetCommandFromObj) /* 516 */
+#endif
+#ifndef Tcl_GetCommandFullName
+#define Tcl_GetCommandFullName \
+	(tclStubsPtr->tcl_GetCommandFullName) /* 517 */
+#endif
+#ifndef Tcl_FSEvalFileEx
+#define Tcl_FSEvalFileEx \
+	(tclStubsPtr->tcl_FSEvalFileEx) /* 518 */
+#endif
+#ifndef Tcl_SetExitProc
+#define Tcl_SetExitProc \
+	(tclStubsPtr->tcl_SetExitProc) /* 519 */
+#endif
+#ifndef Tcl_LimitAddHandler
+#define Tcl_LimitAddHandler \
+	(tclStubsPtr->tcl_LimitAddHandler) /* 520 */
+#endif
+#ifndef Tcl_LimitRemoveHandler
+#define Tcl_LimitRemoveHandler \
+	(tclStubsPtr->tcl_LimitRemoveHandler) /* 521 */
+#endif
+#ifndef Tcl_LimitReady
+#define Tcl_LimitReady \
+	(tclStubsPtr->tcl_LimitReady) /* 522 */
+#endif
+#ifndef Tcl_LimitCheck
+#define Tcl_LimitCheck \
+	(tclStubsPtr->tcl_LimitCheck) /* 523 */
+#endif
+#ifndef Tcl_LimitExceeded
+#define Tcl_LimitExceeded \
+	(tclStubsPtr->tcl_LimitExceeded) /* 524 */
+#endif
+#ifndef Tcl_LimitSetCommands
+#define Tcl_LimitSetCommands \
+	(tclStubsPtr->tcl_LimitSetCommands) /* 525 */
+#endif
+#ifndef Tcl_LimitSetTime
+#define Tcl_LimitSetTime \
+	(tclStubsPtr->tcl_LimitSetTime) /* 526 */
+#endif
+#ifndef Tcl_LimitSetGranularity
+#define Tcl_LimitSetGranularity \
+	(tclStubsPtr->tcl_LimitSetGranularity) /* 527 */
+#endif
+#ifndef Tcl_LimitTypeEnabled
+#define Tcl_LimitTypeEnabled \
+	(tclStubsPtr->tcl_LimitTypeEnabled) /* 528 */
+#endif
+#ifndef Tcl_LimitTypeExceeded
+#define Tcl_LimitTypeExceeded \
+	(tclStubsPtr->tcl_LimitTypeExceeded) /* 529 */
+#endif
+#ifndef Tcl_LimitTypeSet
+#define Tcl_LimitTypeSet \
+	(tclStubsPtr->tcl_LimitTypeSet) /* 530 */
+#endif
+#ifndef Tcl_LimitTypeReset
+#define Tcl_LimitTypeReset \
+	(tclStubsPtr->tcl_LimitTypeReset) /* 531 */
+#endif
+#ifndef Tcl_LimitGetCommands
+#define Tcl_LimitGetCommands \
+	(tclStubsPtr->tcl_LimitGetCommands) /* 532 */
+#endif
+#ifndef Tcl_LimitGetTime
+#define Tcl_LimitGetTime \
+	(tclStubsPtr->tcl_LimitGetTime) /* 533 */
+#endif
+#ifndef Tcl_LimitGetGranularity
+#define Tcl_LimitGetGranularity \
+	(tclStubsPtr->tcl_LimitGetGranularity) /* 534 */
+#endif
+#ifndef Tcl_SaveInterpState
+#define Tcl_SaveInterpState \
+	(tclStubsPtr->tcl_SaveInterpState) /* 535 */
+#endif
+#ifndef Tcl_RestoreInterpState
+#define Tcl_RestoreInterpState \
+	(tclStubsPtr->tcl_RestoreInterpState) /* 536 */
+#endif
+#ifndef Tcl_DiscardInterpState
+#define Tcl_DiscardInterpState \
+	(tclStubsPtr->tcl_DiscardInterpState) /* 537 */
+#endif
+#ifndef Tcl_SetReturnOptions
+#define Tcl_SetReturnOptions \
+	(tclStubsPtr->tcl_SetReturnOptions) /* 538 */
+#endif
+#ifndef Tcl_GetReturnOptions
+#define Tcl_GetReturnOptions \
+	(tclStubsPtr->tcl_GetReturnOptions) /* 539 */
+#endif
+#ifndef Tcl_IsEnsemble
+#define Tcl_IsEnsemble \
+	(tclStubsPtr->tcl_IsEnsemble) /* 540 */
+#endif
+#ifndef Tcl_CreateEnsemble
+#define Tcl_CreateEnsemble \
+	(tclStubsPtr->tcl_CreateEnsemble) /* 541 */
+#endif
+#ifndef Tcl_FindEnsemble
+#define Tcl_FindEnsemble \
+	(tclStubsPtr->tcl_FindEnsemble) /* 542 */
+#endif
+#ifndef Tcl_SetEnsembleSubcommandList
+#define Tcl_SetEnsembleSubcommandList \
+	(tclStubsPtr->tcl_SetEnsembleSubcommandList) /* 543 */
+#endif
+#ifndef Tcl_SetEnsembleMappingDict
+#define Tcl_SetEnsembleMappingDict \
+	(tclStubsPtr->tcl_SetEnsembleMappingDict) /* 544 */
+#endif
+#ifndef Tcl_SetEnsembleUnknownHandler
+#define Tcl_SetEnsembleUnknownHandler \
+	(tclStubsPtr->tcl_SetEnsembleUnknownHandler) /* 545 */
+#endif
+#ifndef Tcl_SetEnsembleFlags
+#define Tcl_SetEnsembleFlags \
+	(tclStubsPtr->tcl_SetEnsembleFlags) /* 546 */
+#endif
+#ifndef Tcl_GetEnsembleSubcommandList
+#define Tcl_GetEnsembleSubcommandList \
+	(tclStubsPtr->tcl_GetEnsembleSubcommandList) /* 547 */
+#endif
+#ifndef Tcl_GetEnsembleMappingDict
+#define Tcl_GetEnsembleMappingDict \
+	(tclStubsPtr->tcl_GetEnsembleMappingDict) /* 548 */
+#endif
+#ifndef Tcl_GetEnsembleUnknownHandler
+#define Tcl_GetEnsembleUnknownHandler \
+	(tclStubsPtr->tcl_GetEnsembleUnknownHandler) /* 549 */
+#endif
+#ifndef Tcl_GetEnsembleFlags
+#define Tcl_GetEnsembleFlags \
+	(tclStubsPtr->tcl_GetEnsembleFlags) /* 550 */
+#endif
+#ifndef Tcl_GetEnsembleNamespace
+#define Tcl_GetEnsembleNamespace \
+	(tclStubsPtr->tcl_GetEnsembleNamespace) /* 551 */
+#endif
+#ifndef Tcl_SetTimeProc
+#define Tcl_SetTimeProc \
+	(tclStubsPtr->tcl_SetTimeProc) /* 552 */
+#endif
+#ifndef Tcl_QueryTimeProc
+#define Tcl_QueryTimeProc \
+	(tclStubsPtr->tcl_QueryTimeProc) /* 553 */
+#endif
 #ifndef Tcl_ChannelThreadActionProc
 #define Tcl_ChannelThreadActionProc \
 	(tclStubsPtr->tcl_ChannelThreadActionProc) /* 554 */
 #endif
-/* Slot 555 is reserved */
-/* Slot 556 is reserved */
-/* Slot 557 is reserved */
-/* Slot 558 is reserved */
-/* Slot 559 is reserved */
-/* Slot 560 is reserved */
-/* Slot 561 is reserved */
-/* Slot 562 is reserved */
-/* Slot 563 is reserved */
-/* Slot 564 is reserved */
-/* Slot 565 is reserved */
-/* Slot 566 is reserved */
-/* Slot 567 is reserved */
-/* Slot 568 is reserved */
-/* Slot 569 is reserved */
-/* Slot 570 is reserved */
-/* Slot 571 is reserved */
-/* Slot 572 is reserved */
+#ifndef Tcl_NewBignumObj
+#define Tcl_NewBignumObj \
+	(tclStubsPtr->tcl_NewBignumObj) /* 555 */
+#endif
+#ifndef Tcl_DbNewBignumObj
+#define Tcl_DbNewBignumObj \
+	(tclStubsPtr->tcl_DbNewBignumObj) /* 556 */
+#endif
+#ifndef Tcl_SetBignumObj
+#define Tcl_SetBignumObj \
+	(tclStubsPtr->tcl_SetBignumObj) /* 557 */
+#endif
+#ifndef Tcl_GetBignumFromObj
+#define Tcl_GetBignumFromObj \
+	(tclStubsPtr->tcl_GetBignumFromObj) /* 558 */
+#endif
+#ifndef Tcl_TakeBignumFromObj
+#define Tcl_TakeBignumFromObj \
+	(tclStubsPtr->tcl_TakeBignumFromObj) /* 559 */
+#endif
+#ifndef Tcl_TruncateChannel
+#define Tcl_TruncateChannel \
+	(tclStubsPtr->tcl_TruncateChannel) /* 560 */
+#endif
+#ifndef Tcl_ChannelTruncateProc
+#define Tcl_ChannelTruncateProc \
+	(tclStubsPtr->tcl_ChannelTruncateProc) /* 561 */
+#endif
+#ifndef Tcl_SetChannelErrorInterp
+#define Tcl_SetChannelErrorInterp \
+	(tclStubsPtr->tcl_SetChannelErrorInterp) /* 562 */
+#endif
+#ifndef Tcl_GetChannelErrorInterp
+#define Tcl_GetChannelErrorInterp \
+	(tclStubsPtr->tcl_GetChannelErrorInterp) /* 563 */
+#endif
+#ifndef Tcl_SetChannelError
+#define Tcl_SetChannelError \
+	(tclStubsPtr->tcl_SetChannelError) /* 564 */
+#endif
+#ifndef Tcl_GetChannelError
+#define Tcl_GetChannelError \
+	(tclStubsPtr->tcl_GetChannelError) /* 565 */
+#endif
+#ifndef Tcl_InitBignumFromDouble
+#define Tcl_InitBignumFromDouble \
+	(tclStubsPtr->tcl_InitBignumFromDouble) /* 566 */
+#endif
+#ifndef Tcl_GetNamespaceUnknownHandler
+#define Tcl_GetNamespaceUnknownHandler \
+	(tclStubsPtr->tcl_GetNamespaceUnknownHandler) /* 567 */
+#endif
+#ifndef Tcl_SetNamespaceUnknownHandler
+#define Tcl_SetNamespaceUnknownHandler \
+	(tclStubsPtr->tcl_SetNamespaceUnknownHandler) /* 568 */
+#endif
+#ifndef Tcl_GetEncodingFromObj
+#define Tcl_GetEncodingFromObj \
+	(tclStubsPtr->tcl_GetEncodingFromObj) /* 569 */
+#endif
+#ifndef Tcl_GetEncodingSearchPath
+#define Tcl_GetEncodingSearchPath \
+	(tclStubsPtr->tcl_GetEncodingSearchPath) /* 570 */
+#endif
+#ifndef Tcl_SetEncodingSearchPath
+#define Tcl_SetEncodingSearchPath \
+	(tclStubsPtr->tcl_SetEncodingSearchPath) /* 571 */
+#endif
+#ifndef Tcl_GetEncodingNameFromEnvironment
+#define Tcl_GetEncodingNameFromEnvironment \
+	(tclStubsPtr->tcl_GetEncodingNameFromEnvironment) /* 572 */
+#endif
 #ifndef Tcl_PkgRequireProc
 #define Tcl_PkgRequireProc \
 	(tclStubsPtr->tcl_PkgRequireProc) /* 573 */
 #endif
-/* Slot 574 is reserved */
-/* Slot 575 is reserved */
-/* Slot 576 is reserved */
-/* Slot 577 is reserved */
-/* Slot 578 is reserved */
-/* Slot 579 is reserved */
+#ifndef Tcl_AppendObjToErrorInfo
+#define Tcl_AppendObjToErrorInfo \
+	(tclStubsPtr->tcl_AppendObjToErrorInfo) /* 574 */
+#endif
+#ifndef Tcl_AppendLimitedToObj
+#define Tcl_AppendLimitedToObj \
+	(tclStubsPtr->tcl_AppendLimitedToObj) /* 575 */
+#endif
+#ifndef Tcl_Format
+#define Tcl_Format \
+	(tclStubsPtr->tcl_Format) /* 576 */
+#endif
+#ifndef Tcl_AppendFormatToObj
+#define Tcl_AppendFormatToObj \
+	(tclStubsPtr->tcl_AppendFormatToObj) /* 577 */
+#endif
+#ifndef Tcl_ObjPrintf
+#define Tcl_ObjPrintf \
+	(tclStubsPtr->tcl_ObjPrintf) /* 578 */
+#endif
+#ifndef Tcl_AppendPrintfToObj
+#define Tcl_AppendPrintfToObj \
+	(tclStubsPtr->tcl_AppendPrintfToObj) /* 579 */
+#endif
 /* Slot 580 is reserved */
 /* Slot 581 is reserved */
 /* Slot 582 is reserved */
@@ -4516,6 +6544,9 @@ extern TclStubs *tclStubsPtr;
 
 #undef TclUnusedStubEntry
 
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLIMPORT
+
 /*
  * Deprecated Tcl procedures:
  */
diff --git a/generic/tclDictObj.c b/generic/tclDictObj.c
new file mode 100644
index 0000000..4adc5ce
--- /dev/null
+++ b/generic/tclDictObj.c
@@ -0,0 +1,3169 @@
+/*
+ * tclDictObj.c --
+ *
+ *	This file contains functions that implement the Tcl dict object type
+ *	and its accessor command.
+ *
+ * Copyright (c) 2002 by Donal K. Fellows.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include "tommath.h"
+
+/*
+ * Forward declaration.
+ */
+struct Dict;
+
+/*
+ * Prototypes for functions defined later in this file:
+ */
+
+static void		DeleteDict(struct Dict *dict);
+static int		DictAppendCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictCreateCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictExistsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictFilterCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictForCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictGetCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictIncrCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictInfoCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictKeysCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictLappendCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictMergeCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictRemoveCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictReplaceCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictSetCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictSizeCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictUnsetCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictUpdateCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictValuesCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static int		DictWithCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const *objv);
+static void		DupDictInternalRep(Tcl_Obj *srcPtr, Tcl_Obj *copyPtr);
+static void		FreeDictInternalRep(Tcl_Obj *dictPtr);
+static void		InvalidateDictChain(Tcl_Obj *dictObj);
+static int		SetDictFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static void		UpdateStringOfDict(Tcl_Obj *dictPtr);
+static Tcl_HashEntry *	AllocChainEntry(Tcl_HashTable *tablePtr,void *keyPtr);
+static inline void	InitChainTable(struct Dict *dict);
+static inline void	DeleteChainTable(struct Dict *dict);
+static inline Tcl_HashEntry *CreateChainEntry(struct Dict *dict,
+			    Tcl_Obj *keyPtr, int *newPtr);
+static inline int	DeleteChainEntry(struct Dict *dict, Tcl_Obj *keyPtr);
+
+/*
+ * Table of dict subcommand names and implementations.
+ */
+
+static const EnsembleImplMap implementationMap[] = {
+    {"append",	DictAppendCmd,	TclCompileDictAppendCmd },
+    {"create",	DictCreateCmd,	NULL },
+    {"exists",	DictExistsCmd,	NULL },
+    {"filter",	DictFilterCmd,	NULL },
+    {"for",	DictForCmd,	TclCompileDictForCmd },
+    {"get",	DictGetCmd,	TclCompileDictGetCmd },
+    {"incr",	DictIncrCmd,	TclCompileDictIncrCmd },
+    {"info",	DictInfoCmd,	NULL },
+    {"keys",	DictKeysCmd,	NULL },
+    {"lappend",	DictLappendCmd,	TclCompileDictLappendCmd },
+    {"merge",	DictMergeCmd,	NULL },
+    {"remove",	DictRemoveCmd,	NULL },
+    {"replace",	DictReplaceCmd,	NULL },
+    {"set",	DictSetCmd,	TclCompileDictSetCmd },
+    {"size",	DictSizeCmd,	NULL },
+    {"unset",	DictUnsetCmd,	NULL },
+    {"update",	DictUpdateCmd,	TclCompileDictUpdateCmd },
+    {"values",	DictValuesCmd,	NULL },
+    {"with",	DictWithCmd,	NULL },
+    {NULL, NULL, NULL}
+};
+
+/*
+ * Internal representation of the entries in the hash table that backs a
+ * dictionary.
+ */
+
+typedef struct ChainEntry {
+    Tcl_HashEntry entry;
+    struct ChainEntry *prevPtr;
+    struct ChainEntry *nextPtr;
+} ChainEntry;
+
+/*
+ * Internal representation of a dictionary.
+ *
+ * The internal representation of a dictionary object is a hash table (with
+ * Tcl_Objs for both keys and values), a reference count and epoch number for
+ * detecting concurrent modifications of the dictionary, and a pointer to the
+ * parent object (used when invalidating string reps of pathed dictionary
+ * trees) which is NULL in normal use. The fact that hash tables know (with
+ * appropriate initialisation) already about objects makes key management /so/
+ * much easier!
+ *
+ * Reference counts are used to enable safe iteration across hashes while
+ * allowing the type of the containing object to be modified.
+ */
+
+typedef struct Dict {
+    Tcl_HashTable table;	/* Object hash table to store mapping in. */
+    ChainEntry *entryChainHead;	/* Linked list of all entries in the
+				 * dictionary. Used for doing traversal of the
+				 * entries in the order that they are
+				 * created. */
+    ChainEntry *entryChainTail;	/* Other end of linked list of all entries in
+				 * the dictionary. Used for doing traversal of
+				 * the entries in the order that they are
+				 * created. */
+    int epoch;			/* Epoch counter */
+    int refcount;		/* Reference counter (see above) */
+    Tcl_Obj *chain;		/* Linked list used for invalidating the
+				 * string representations of updated nested
+				 * dictionaries. */
+} Dict;
+
+/*
+ * The structure below defines the dictionary object type by means of
+ * functions that can be invoked by generic object code.
+ */
+
+Tcl_ObjType tclDictType = {
+    "dict",
+    FreeDictInternalRep,		/* freeIntRepProc */
+    DupDictInternalRep,		        /* dupIntRepProc */
+    UpdateStringOfDict,			/* updateStringProc */
+    SetDictFromAny			/* setFromAnyProc */
+};
+
+/*
+ * The type of the specially adapted version of the Tcl_Obj*-containing hash
+ * table defined in the tclObj.c code. This version differs in that it
+ * allocates a bit more space in each hash entry in order to hold the pointers
+ * used to keep the hash entries in a linked list.
+ *
+ * Note that this type of hash table is *only* suitable for direct use in
+ * *this* file. Everything else should use the dict iterator API.
+ */
+
+static Tcl_HashKeyType chainHashType = {
+    TCL_HASH_KEY_TYPE_VERSION,
+    0,
+    TclHashObjKey,
+    TclCompareObjKeys,
+    AllocChainEntry,
+    TclFreeObjEntry
+};
+
+/***** START OF FUNCTIONS IMPLEMENTING DICT CORE API *****/
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AllocChainEntry --
+ *
+ *	Allocate space for a Tcl_HashEntry containing the Tcl_Obj * key, and
+ *	which has a bit of extra space afterwards for storing pointers to the
+ *	rest of the chain of entries (the extra pointers are left NULL).
+ *
+ * Results:
+ *	The return value is a pointer to the created entry.
+ *
+ * Side effects:
+ *	Increments the reference count on the object.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_HashEntry *
+AllocChainEntry(
+    Tcl_HashTable *tablePtr,
+    void *keyPtr)
+{
+    Tcl_Obj *objPtr = keyPtr;
+    ChainEntry *cPtr;
+
+    cPtr = (ChainEntry *) ckalloc(sizeof(ChainEntry));
+    cPtr->entry.key.oneWordValue = (char *) objPtr;
+    Tcl_IncrRefCount(objPtr);
+    cPtr->entry.clientData = NULL;
+    cPtr->prevPtr = cPtr->nextPtr = NULL;
+
+    return &cPtr->entry;
+}
+
+/*
+ * Helper functions that disguise most of the details relating to how the
+ * linked list of hash entries is managed. In particular, these manage the
+ * creation of the table and initializing of the chain, the deletion of the
+ * table and chain, the adding of an entry to the chain, and the removal of an
+ * entry from the chain.
+ */
+
+static inline void
+InitChainTable(
+    Dict *dict)
+{
+    Tcl_InitCustomHashTable(&dict->table, TCL_CUSTOM_PTR_KEYS,
+	    &chainHashType);
+    dict->entryChainHead = dict->entryChainTail = NULL;
+}
+
+static inline void
+DeleteChainTable(
+    Dict *dict)
+{
+    ChainEntry *cPtr;
+
+    for (cPtr=dict->entryChainHead ; cPtr!=NULL ; cPtr=cPtr->nextPtr) {
+	Tcl_Obj *valuePtr = Tcl_GetHashValue(&cPtr->entry);
+
+	TclDecrRefCount(valuePtr);
+    }
+    Tcl_DeleteHashTable(&dict->table);
+}
+
+static inline Tcl_HashEntry *
+CreateChainEntry(
+    Dict *dict,
+    Tcl_Obj *keyPtr,
+    int *newPtr)
+{
+    ChainEntry *cPtr = (ChainEntry *)
+	    Tcl_CreateHashEntry(&dict->table, (char *) keyPtr, newPtr);
+
+    /*
+     * If this is a new entry in the hash table, stitch it into the chain.
+     */
+
+    if (*newPtr) {
+	cPtr->nextPtr = NULL;
+	if (dict->entryChainHead == NULL) {
+	    cPtr->prevPtr = NULL;
+	    dict->entryChainHead = cPtr;
+	    dict->entryChainTail = cPtr;
+	} else {
+	    cPtr->prevPtr = dict->entryChainTail;
+	    dict->entryChainTail->nextPtr = cPtr;
+	    dict->entryChainTail = cPtr;
+	}
+    }
+
+    return &cPtr->entry;
+}
+
+static inline int
+DeleteChainEntry(
+    Dict *dict,
+    Tcl_Obj *keyPtr)
+{
+    ChainEntry *cPtr = (ChainEntry *)
+	    Tcl_FindHashEntry(&dict->table, (char *) keyPtr);
+
+    if (cPtr == NULL) {
+	return 0;
+    } else {
+	Tcl_Obj *valuePtr = Tcl_GetHashValue(&cPtr->entry);
+	TclDecrRefCount(valuePtr);
+    }
+
+    /*
+     * Unstitch from the chain.
+     */
+
+    if (cPtr->nextPtr) {
+	cPtr->nextPtr->prevPtr = cPtr->prevPtr;
+    } else {
+	dict->entryChainTail = cPtr->prevPtr;
+    }
+    if (cPtr->prevPtr) {
+	cPtr->prevPtr->nextPtr = cPtr->nextPtr;
+    } else {
+	dict->entryChainHead = cPtr->nextPtr;
+    }
+
+    Tcl_DeleteHashEntry(&cPtr->entry);
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DupDictInternalRep --
+ *
+ *	Initialize the internal representation of a dictionary Tcl_Obj to a
+ *	copy of the internal representation of an existing dictionary object.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	"srcPtr"s dictionary internal rep pointer should not be NULL and we
+ *	assume it is not NULL. We set "copyPtr"s internal rep to a pointer to
+ *	a newly allocated dictionary rep that, in turn, points to "srcPtr"s
+ *	key and value objects. Those objects are not actually copied but are
+ *	shared between "srcPtr" and "copyPtr". The ref count of each key and
+ *	value object is incremented.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DupDictInternalRep(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *copyPtr)
+{
+    Dict *oldDict = srcPtr->internalRep.twoPtrValue.ptr1;
+    Dict *newDict = (Dict *) ckalloc(sizeof(Dict));
+    ChainEntry *cPtr;
+
+    /*
+     * Copy values across from the old hash table.
+     */
+
+    InitChainTable(newDict);
+    for (cPtr=oldDict->entryChainHead ; cPtr!=NULL ; cPtr=cPtr->nextPtr) {
+	void *key = Tcl_GetHashKey(&oldDict->table, &cPtr->entry);
+	Tcl_Obj *valuePtr = Tcl_GetHashValue(&cPtr->entry);
+	int n;
+	Tcl_HashEntry *hPtr = CreateChainEntry(newDict, key, &n);
+
+	/*
+	 * Fill in the contents.
+	 */
+
+	Tcl_SetHashValue(hPtr, (ClientData) valuePtr);
+	Tcl_IncrRefCount(valuePtr);
+    }
+
+    /*
+     * Initialise other fields.
+     */
+
+    newDict->epoch = 0;
+    newDict->chain = NULL;
+    newDict->refcount = 1;
+
+    /*
+     * Store in the object.
+     */
+
+    copyPtr->internalRep.twoPtrValue.ptr1 = newDict;
+    copyPtr->typePtr = &tclDictType;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeDictInternalRep --
+ *
+ *	Deallocate the storage associated with a dictionary object's internal
+ *	representation.
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	Frees the memory holding the dictionary's internal hash table unless
+ *	it is locked by an iteration going over it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeDictInternalRep(
+    Tcl_Obj *dictPtr)
+{
+    Dict *dict = dictPtr->internalRep.twoPtrValue.ptr1;
+
+    --dict->refcount;
+    if (dict->refcount <= 0) {
+	DeleteDict(dict);
+    }
+    dictPtr->typePtr = NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DeleteDict --
+ *
+ *	Delete the structure that is used to implement a dictionary's internal
+ *	representation. Called when either the dictionary object loses its
+ *	internal representation or when the last iteration over the dictionary
+ *	completes.
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	Decrements the reference count of all key and value objects in the
+ *	dictionary, which may free them.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DeleteDict(
+    Dict *dict)
+{
+    DeleteChainTable(dict);
+    ckfree((char *) dict);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UpdateStringOfDict --
+ *
+ *	Update the string representation for a dictionary object. Note: This
+ *	function does not invalidate an existing old string rep so storage
+ *	will be lost if this has not already been done. This code is based on
+ *	UpdateStringOfList in tclListObj.c
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The object's string is set to a valid string that results from the
+ *	dict-to-string conversion. This string will be empty if the dictionary
+ *	has no key/value pairs. The dictionary internal representation should
+ *	not be NULL and we assume it is not NULL.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UpdateStringOfDict(
+    Tcl_Obj *dictPtr)
+{
+#define LOCAL_SIZE 20
+    int localFlags[LOCAL_SIZE], *flagPtr = NULL;
+    Dict *dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    ChainEntry *cPtr;
+    Tcl_Obj *keyPtr, *valuePtr;
+    int i, length, bytesNeeded = 0;
+    char *elem, *dst;
+    const int maxFlags = UINT_MAX / sizeof(int);
+
+    /*
+     * This field is the most useful one in the whole hash structure, and it
+     * is not exposed by any API function...
+     */
+
+    int numElems = dict->table.numEntries * 2;
+
+    /* Handle empty list case first, simplifies what follows */
+    if (numElems == 0) {
+	dictPtr->bytes = tclEmptyStringRep;
+	dictPtr->length = 0;
+	return;
+    }
+
+    /*
+     * Pass 1: estimate space, gather flags.
+     */
+
+    if (numElems <= LOCAL_SIZE) {
+	flagPtr = localFlags;
+    } else if (numElems > maxFlags) {
+	Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+    } else {
+	flagPtr = (int *) ckalloc((unsigned) numElems*sizeof(int));
+    }
+    for (i=0,cPtr=dict->entryChainHead; i<numElems; i+=2,cPtr=cPtr->nextPtr) {
+	/*
+	 * Assume that cPtr is never NULL since we know the number of array
+	 * elements already.
+	 */
+
+	flagPtr[i] = ( i ? TCL_DONT_QUOTE_HASH : 0 );
+	keyPtr = (Tcl_Obj *) Tcl_GetHashKey(&dict->table, &cPtr->entry);
+	elem = TclGetStringFromObj(keyPtr, &length);
+	bytesNeeded += TclScanElement(elem, length, flagPtr+i);
+	if (bytesNeeded < 0) {
+	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+	}
+
+	flagPtr[i+1] = TCL_DONT_QUOTE_HASH;
+	valuePtr = Tcl_GetHashValue(&cPtr->entry);
+	elem = TclGetStringFromObj(valuePtr, &length);
+	bytesNeeded += TclScanElement(elem, length, flagPtr+i+1);
+	if (bytesNeeded < 0) {
+	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+	}
+    }
+    if (bytesNeeded > INT_MAX - numElems + 1) {
+	Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+    }
+    bytesNeeded += numElems;
+
+    /*
+     * Pass 2: copy into string rep buffer.
+     */
+
+    dictPtr->length = bytesNeeded - 1;
+    dictPtr->bytes = ckalloc((unsigned) bytesNeeded);
+    dst = dictPtr->bytes;
+    for (i=0,cPtr=dict->entryChainHead; i<numElems; i+=2,cPtr=cPtr->nextPtr) {
+	flagPtr[i] |= ( i ? TCL_DONT_QUOTE_HASH : 0 );
+	keyPtr = (Tcl_Obj *) Tcl_GetHashKey(&dict->table, &cPtr->entry);
+	elem = TclGetStringFromObj(keyPtr, &length);
+	dst += TclConvertElement(elem, length, dst, flagPtr[i]);
+	*dst++ = ' ';
+
+	flagPtr[i+1] |= TCL_DONT_QUOTE_HASH;
+	valuePtr = Tcl_GetHashValue(&cPtr->entry);
+	elem = TclGetStringFromObj(valuePtr, &length);
+	dst += TclConvertElement(elem, length, dst, flagPtr[i+1]);
+	*dst++ = ' ';
+    }
+    dictPtr->bytes[dictPtr->length] = '\0';
+
+    if (flagPtr != localFlags) {
+	ckfree((char *) flagPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetDictFromAny --
+ *
+ *	Convert a non-dictionary object into a dictionary object. This code is
+ *	very closely related to SetListFromAny in tclListObj.c but does not
+ *	actually guarantee that a dictionary object will have a string rep (as
+ *	conversions from lists are handled with a special case.)
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	If the string can be converted, it loses any old internal
+ *	representation that it had and gains a dictionary's internalRep.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SetDictFromAny(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr)
+{
+    Tcl_HashEntry *hPtr;
+    int isNew, result;
+    Dict *dict = (Dict *) ckalloc(sizeof(Dict));
+
+    InitChainTable(dict);
+
+    /*
+     * Since lists and dictionaries have very closely-related string
+     * representations (i.e. the same parsing code) we can safely special-case
+     * the conversion from lists to dictionaries.
+     */
+
+    if (objPtr->typePtr == &tclListType) {
+	int objc, i;
+	Tcl_Obj **objv;
+
+	/* Cannot fail, we already know the Tcl_ObjType is "list". */
+	TclListObjGetElements(NULL, objPtr, &objc, &objv);
+	if (objc & 1) {
+	    goto missingValue;
+	}
+
+	for (i=0 ; i<objc ; i+=2) {
+	
+	    /* Store key and value in the hash table we're building. */
+	    hPtr = CreateChainEntry(dict, objv[i], &isNew);
+	    if (!isNew) {
+		Tcl_Obj *discardedValue = Tcl_GetHashValue(hPtr);
+
+		/*
+		 * Not really a well-formed dictionary as there are duplicate
+		 * keys, so better get the string rep here so that we can
+		 * convert back.
+		 */
+
+		(void) Tcl_GetString(objPtr);
+
+		TclDecrRefCount(discardedValue);
+	    }
+	    Tcl_SetHashValue(hPtr, objv[i+1]);
+	    Tcl_IncrRefCount(objv[i+1]); /* Since hash now holds ref to it */
+	}
+    } else {
+	int length;
+	const char *nextElem = TclGetStringFromObj(objPtr, &length);
+	const char *limit = (nextElem + length);
+
+	while (nextElem < limit) {
+	    Tcl_Obj *keyPtr, *valuePtr;
+	    const char *elemStart;
+	    int elemSize, literal;
+
+	    result = TclFindElement(interp, nextElem, (limit - nextElem),
+		    &elemStart, &nextElem, &elemSize, &literal);
+	    if (result != TCL_OK) {
+		goto errorExit;
+	    }
+	    if (elemStart == limit) {
+		break;
+	    }
+	    if (nextElem == limit) {
+		goto missingValue;
+	    }
+
+	    if (literal) {
+		TclNewStringObj(keyPtr, elemStart, elemSize);
+	    } else {
+		/* Avoid double copy */
+		TclNewObj(keyPtr);
+		keyPtr->bytes = ckalloc((unsigned) elemSize + 1);
+		keyPtr->length = TclCopyAndCollapse(elemSize, elemStart,
+			keyPtr->bytes);
+	    }
+
+	    result = TclFindElement(interp, nextElem, (limit - nextElem),
+		    &elemStart, &nextElem, &elemSize, &literal);
+	    if (result != TCL_OK) {
+		TclDecrRefCount(keyPtr);
+		goto errorExit;
+	    }
+
+	    if (literal) {
+		TclNewStringObj(valuePtr, elemStart, elemSize);
+	    } else {
+		/* Avoid double copy */
+		TclNewObj(valuePtr);
+		valuePtr->bytes = ckalloc((unsigned) elemSize + 1);
+		valuePtr->length = TclCopyAndCollapse(elemSize, elemStart,
+			valuePtr->bytes);
+	    }
+
+	    /* Store key and value in the hash table we're building. */
+	    hPtr = CreateChainEntry(dict, keyPtr, &isNew);
+	    if (!isNew) {
+		Tcl_Obj *discardedValue = Tcl_GetHashValue(hPtr);
+
+		TclDecrRefCount(keyPtr);
+		TclDecrRefCount(discardedValue);
+	    }
+	    Tcl_SetHashValue(hPtr, valuePtr);
+	    Tcl_IncrRefCount(valuePtr); /* since hash now holds ref to it */
+	}
+    }
+
+    /*
+     * Free the old internalRep before setting the new one. We do this as late
+     * as possible to allow the conversion code, in particular
+     * Tcl_GetStringFromObj, to use that old internalRep.
+     */
+
+    TclFreeIntRep(objPtr);
+    dict->epoch = 0;
+    dict->chain = NULL;
+    dict->refcount = 1;
+    objPtr->internalRep.twoPtrValue.ptr1 = dict;
+    objPtr->typePtr = &tclDictType;
+    return TCL_OK;
+
+  missingValue:
+    if (interp != NULL) {
+	Tcl_SetResult(interp, "missing value to go with key", TCL_STATIC);
+    }
+    result = TCL_ERROR;
+
+  errorExit:
+    DeleteChainTable(dict);
+    ckfree((char *) dict);
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclTraceDictPath --
+ *
+ *	Trace through a tree of dictionaries using the array of keys given. If
+ *	the flags argument has the DICT_PATH_UPDATE flag is set, a
+ *	backward-pointing chain of dictionaries is also built (in the Dict's
+ *	chain field) and the chained dictionaries are made into unshared
+ *	dictionaries (if they aren't already.)
+ *
+ * Results:
+ *	The object at the end of the path, or NULL if there was an error. Note
+ *	that this it is an error for an intermediate dictionary on the path to
+ *	not exist. If the flags argument has the DICT_PATH_EXISTS set, a
+ *	non-existent path gives a DICT_PATH_NON_EXISTENT result.
+ *
+ * Side effects:
+ *	If the flags argument is zero or DICT_PATH_EXISTS, there are no side
+ *	effects (other than potential conversion of objects to dictionaries.)
+ *	If the flags argument is DICT_PATH_UPDATE, the following additional
+ *	side effects occur. Shared dictionaries along the path are converted
+ *	into unshared objects, and a backward-pointing chain is built using
+ *	the chain fields of the dictionaries (for easy invalidation of string
+ *	representations using InvalidateDictChain). If the flags argument has
+ *	the DICT_PATH_CREATE bits set (and not the DICT_PATH_EXISTS bit),
+ *	non-existant keys will be inserted with a value of an empty
+ *	dictionary, resulting in the path being built.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclTraceDictPath(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    int keyc,
+    Tcl_Obj *const keyv[],
+    int flags)
+{
+    Dict *dict, *newDict;
+    int i;
+
+    if (dictPtr->typePtr != &tclDictType) {
+	if (SetDictFromAny(interp, dictPtr) != TCL_OK) {
+	    return NULL;
+	}
+    }
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    if (flags & DICT_PATH_UPDATE) {
+	dict->chain = NULL;
+    }
+
+    for (i=0 ; i<keyc ; i++) {
+	Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&dict->table, (char *)keyv[i]);
+	Tcl_Obj *tmpObj;
+
+	if (hPtr == NULL) {
+	    int isNew;			/* Dummy */
+
+	    if (flags & DICT_PATH_EXISTS) {
+		return DICT_PATH_NON_EXISTENT;
+	    }
+	    if ((flags & DICT_PATH_CREATE) != DICT_PATH_CREATE) {
+		if (interp != NULL) {
+		    Tcl_ResetResult(interp);
+		    Tcl_AppendResult(interp, "key \"", TclGetString(keyv[i]),
+			    "\" not known in dictionary", NULL);
+		    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "DICT",
+			    TclGetString(keyv[i]), NULL);
+		}
+		return NULL;
+	    }
+
+	    /*
+	     * The next line should always set isNew to 1.
+	     */
+
+	    hPtr = CreateChainEntry(dict, keyv[i], &isNew);
+	    tmpObj = Tcl_NewDictObj();
+	    Tcl_IncrRefCount(tmpObj);
+	    Tcl_SetHashValue(hPtr, tmpObj);
+	} else {
+	    tmpObj = Tcl_GetHashValue(hPtr);
+	    if (tmpObj->typePtr != &tclDictType) {
+		if (SetDictFromAny(interp, tmpObj) != TCL_OK) {
+		    return NULL;
+		}
+	    }
+	}
+
+	newDict = tmpObj->internalRep.twoPtrValue.ptr1;
+	if (flags & DICT_PATH_UPDATE) {
+	    if (Tcl_IsShared(tmpObj)) {
+		TclDecrRefCount(tmpObj);
+		tmpObj = Tcl_DuplicateObj(tmpObj);
+		Tcl_IncrRefCount(tmpObj);
+		Tcl_SetHashValue(hPtr, (ClientData) tmpObj);
+		dict->epoch++;
+		newDict = tmpObj->internalRep.twoPtrValue.ptr1;
+	    }
+
+	    newDict->chain = dictPtr;
+	}
+	dict = newDict;
+	dictPtr = tmpObj;
+    }
+    return dictPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * InvalidateDictChain --
+ *
+ *	Go through a dictionary chain (built by an updating invokation of
+ *	TclTraceDictPath) and invalidate the string representations of all the
+ *	dictionaries on the chain.
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	String reps are invalidated and epoch counters (for detecting illegal
+ *	concurrent modifications) are updated through the chain of updated
+ *	dictionaries.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+InvalidateDictChain(
+    Tcl_Obj *dictObj)
+{
+    Dict *dict = dictObj->internalRep.twoPtrValue.ptr1;
+
+    do {
+	TclInvalidateStringRep(dictObj);
+	dict->epoch++;
+	dictObj = dict->chain;
+	if (dictObj == NULL) {
+	    break;
+	}
+	dict->chain = NULL;
+	dict = dictObj->internalRep.twoPtrValue.ptr1;
+    } while (dict != NULL);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjPut --
+ *
+ *	Add a key,value pair to a dictionary, or update the value for a key if
+ *	that key already has a mapping in the dictionary.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	The object pointed to by dictPtr is converted to a dictionary if it is
+ *	not already one, and any string representation that it has is
+ *	invalidated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjPut(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    Tcl_Obj *keyPtr,
+    Tcl_Obj *valuePtr)
+{
+    Dict *dict;
+    Tcl_HashEntry *hPtr;
+    int isNew;
+
+    if (Tcl_IsShared(dictPtr)) {
+	Tcl_Panic("%s called with shared object", "Tcl_DictObjPut");
+    }
+
+    if (dictPtr->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, dictPtr);
+
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+
+    if (dictPtr->bytes != NULL) {
+	TclInvalidateStringRep(dictPtr);
+    }
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    hPtr = CreateChainEntry(dict, keyPtr, &isNew);
+    Tcl_IncrRefCount(valuePtr);
+    if (!isNew) {
+	Tcl_Obj *oldValuePtr = Tcl_GetHashValue(hPtr);
+
+	TclDecrRefCount(oldValuePtr);
+    }
+    Tcl_SetHashValue(hPtr, valuePtr);
+    dict->epoch++;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjGet --
+ *
+ *	Given a key, get its value from the dictionary (or NULL if key is not
+ *	found in dictionary.)
+ *
+ * Results:
+ *	A standard Tcl result. The variable pointed to by valuePtrPtr is
+ *	updated with the value for the key. Note that it is not an error for
+ *	the key to have no mapping in the dictionary.
+ *
+ * Side effects:
+ *	The object pointed to by dictPtr is converted to a dictionary if it is
+ *	not already one.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjGet(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    Tcl_Obj *keyPtr,
+    Tcl_Obj **valuePtrPtr)
+{
+    Dict *dict;
+    Tcl_HashEntry *hPtr;
+
+    if (dictPtr->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, dictPtr);
+	if (result != TCL_OK) {
+	    *valuePtrPtr = NULL;
+	    return result;
+	}
+    }
+
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    hPtr = Tcl_FindHashEntry(&dict->table, (char *) keyPtr);
+    if (hPtr == NULL) {
+	*valuePtrPtr = NULL;
+    } else {
+	*valuePtrPtr = Tcl_GetHashValue(hPtr);
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjRemove --
+ *
+ *	Remove the key,value pair with the given key from the dictionary; the
+ *	key does not need to be present in the dictionary.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	The object pointed to by dictPtr is converted to a dictionary if it is
+ *	not already one, and any string representation that it has is
+ *	invalidated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjRemove(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    Tcl_Obj *keyPtr)
+{
+    Dict *dict;
+
+    if (Tcl_IsShared(dictPtr)) {
+	Tcl_Panic("%s called with shared object", "Tcl_DictObjRemove");
+    }
+
+    if (dictPtr->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, dictPtr);
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+
+    if (dictPtr->bytes != NULL) {
+	TclInvalidateStringRep(dictPtr);
+    }
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    if (DeleteChainEntry(dict, keyPtr)) {
+	dict->epoch++;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjSize --
+ *
+ *	How many key,value pairs are there in the dictionary?
+ *
+ * Results:
+ *	A standard Tcl result. Updates the variable pointed to by sizePtr with
+ *	the number of key,value pairs in the dictionary.
+ *
+ * Side effects:
+ *	The dictPtr object is converted to a dictionary type if it is not a
+ *	dictionary already.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjSize(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    int *sizePtr)
+{
+    Dict *dict;
+
+    if (dictPtr->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, dictPtr);
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    *sizePtr = dict->table.numEntries;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjFirst --
+ *
+ *	Start a traversal of the dictionary. Caller must supply the search
+ *	context, pointers for returning key and value, and a pointer to allow
+ *	indication of whether the dictionary has been traversed (i.e. the
+ *	dictionary is empty). The order of traversal is undefined.
+ *
+ * Results:
+ *	A standard Tcl result. Updates the variables pointed to by keyPtrPtr,
+ *	valuePtrPtr and donePtr. Either of keyPtrPtr and valuePtrPtr may be
+ *	NULL, in which case the key/value is not made available to the caller.
+ *
+ * Side effects:
+ *	The dictPtr object is converted to a dictionary type if it is not a
+ *	dictionary already. The search context is initialised if the search
+ *	has not finished. The dictionary's internal rep is Tcl_Preserve()d if
+ *	the dictionary has at least one element.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjFirst(
+    Tcl_Interp *interp,		/* For error messages, or NULL if no error
+				 * messages desired. */
+    Tcl_Obj *dictPtr,		/* Dictionary to traverse. */
+    Tcl_DictSearch *searchPtr,	/* Pointer to a dict search context. */
+    Tcl_Obj **keyPtrPtr,	/* Pointer to a variable to have the first key
+				 * written into, or NULL. */
+    Tcl_Obj **valuePtrPtr,	/* Pointer to a variable to have the first
+				 * value written into, or NULL.*/
+    int *donePtr)		/* Pointer to a variable which will have a 1
+				 * written into when there are no further
+				 * values in the dictionary, or a 0
+				 * otherwise. */
+{
+    Dict *dict;
+    ChainEntry *cPtr;
+
+    if (dictPtr->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, dictPtr);
+
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    cPtr = dict->entryChainHead;
+    if (cPtr == NULL) {
+	searchPtr->epoch = -1;
+	*donePtr = 1;
+    } else {
+	*donePtr = 0;
+	searchPtr->dictionaryPtr = (Tcl_Dict) dict;
+	searchPtr->epoch = dict->epoch;
+	searchPtr->next = cPtr->nextPtr;
+	dict->refcount++;
+	if (keyPtrPtr != NULL) {
+	    *keyPtrPtr = (Tcl_Obj *) Tcl_GetHashKey(&dict->table,
+		    &cPtr->entry);
+	}
+	if (valuePtrPtr != NULL) {
+	    *valuePtrPtr = Tcl_GetHashValue(&cPtr->entry);
+	}
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjNext --
+ *
+ *	Continue a traversal of a dictionary previously started with
+ *	Tcl_DictObjFirst. This function is safe against concurrent
+ *	modification of the underlying object (including type shimmering),
+ *	treating such situations as if the search has terminated, though it is
+ *	up to the caller to ensure that the object itself is not disposed
+ *	until the search has finished. It is _not_ safe against modifications
+ *	from other threads.
+ *
+ * Results:
+ *	Updates the variables pointed to by keyPtrPtr, valuePtrPtr and
+ *	donePtr. Either of keyPtrPtr and valuePtrPtr may be NULL, in which
+ *	case the key/value is not made available to the caller.
+ *
+ * Side effects:
+ *	Removes a reference to the dictionary's internal rep if the search
+ *	terminates.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_DictObjNext(
+    Tcl_DictSearch *searchPtr,	/* Pointer to a hash search context. */
+    Tcl_Obj **keyPtrPtr,	/* Pointer to a variable to have the first key
+				 * written into, or NULL. */
+    Tcl_Obj **valuePtrPtr,	/* Pointer to a variable to have the first
+				 * value written into, or NULL.*/
+    int *donePtr)		/* Pointer to a variable which will have a 1
+				 * written into when there are no further
+				 * values in the dictionary, or a 0
+				 * otherwise. */
+{
+    ChainEntry *cPtr;
+
+    /*
+     * If the searh is done; we do no work.
+     */
+
+    if (searchPtr->epoch == -1) {
+	*donePtr = 1;
+	return;
+    }
+
+    /*
+     * Bail out if the dictionary has had any elements added, modified or
+     * removed. This *shouldn't* happen, but...
+     */
+
+    if (((Dict *)searchPtr->dictionaryPtr)->epoch != searchPtr->epoch) {
+	Tcl_Panic("concurrent dictionary modification and search");
+    }
+
+    cPtr = searchPtr->next;
+    if (cPtr == NULL) {
+	Tcl_DictObjDone(searchPtr);
+	*donePtr = 1;
+	return;
+    }
+
+    searchPtr->next = cPtr->nextPtr;
+    *donePtr = 0;
+    if (keyPtrPtr != NULL) {
+	*keyPtrPtr = (Tcl_Obj *) Tcl_GetHashKey(
+		&((Dict *)searchPtr->dictionaryPtr)->table, &cPtr->entry);
+    }
+    if (valuePtrPtr != NULL) {
+	*valuePtrPtr = Tcl_GetHashValue(&cPtr->entry);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjDone --
+ *
+ *	Call this if you want to stop a search before you reach the end of the
+ *	dictionary (e.g. because of abnormal termination of the search). It
+ *	need not be used if the search reaches its natural end (i.e. if either
+ *	Tcl_DictObjFirst or Tcl_DictObjNext sets its donePtr variable to 1).
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Removes a reference to the dictionary's internal rep.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_DictObjDone(
+    Tcl_DictSearch *searchPtr)		/* Pointer to a hash search context. */
+{
+    Dict *dict;
+
+    if (searchPtr->epoch != -1) {
+	searchPtr->epoch = -1;
+	dict = (Dict *) searchPtr->dictionaryPtr;
+	dict->refcount--;
+	if (dict->refcount <= 0) {
+	    DeleteDict(dict);
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjPutKeyList --
+ *
+ *	Add a key...key,value pair to a dictionary tree. The main dictionary
+ *	value must not be shared, though sub-dictionaries may be. All
+ *	intermediate dictionaries on the path must exist.
+ *
+ * Results:
+ *	A standard Tcl result. Note that in the error case, a message is left
+ *	in interp unless that is NULL.
+ *
+ * Side effects:
+ *	If the dictionary and any of its sub-dictionaries on the path have
+ *	string representations, these are invalidated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjPutKeyList(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    int keyc,
+    Tcl_Obj *const keyv[],
+    Tcl_Obj *valuePtr)
+{
+    Dict *dict;
+    Tcl_HashEntry *hPtr;
+    int isNew;
+
+    if (Tcl_IsShared(dictPtr)) {
+	Tcl_Panic("%s called with shared object", "Tcl_DictObjPutKeyList");
+    }
+    if (keyc < 1) {
+	Tcl_Panic("%s called with empty key list", "Tcl_DictObjPutKeyList");
+    }
+
+    dictPtr = TclTraceDictPath(interp, dictPtr, keyc-1,keyv, DICT_PATH_CREATE);
+    if (dictPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    hPtr = CreateChainEntry(dict, keyv[keyc-1], &isNew);
+    Tcl_IncrRefCount(valuePtr);
+    if (!isNew) {
+	Tcl_Obj *oldValuePtr = Tcl_GetHashValue(hPtr);
+	TclDecrRefCount(oldValuePtr);
+    }
+    Tcl_SetHashValue(hPtr, valuePtr);
+    InvalidateDictChain(dictPtr);
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DictObjRemoveKeyList --
+ *
+ *	Remove a key...key,value pair from a dictionary tree (the value
+ *	removed is implicit in the key path). The main dictionary value must
+ *	not be shared, though sub-dictionaries may be. It is not an error if
+ *	there is no value associated with the given key list, but all
+ *	intermediate dictionaries on the key path must exist.
+ *
+ * Results:
+ *	A standard Tcl result. Note that in the error case, a message is left
+ *	in interp unless that is NULL.
+ *
+ * Side effects:
+ *	If the dictionary and any of its sub-dictionaries on the key path have
+ *	string representations, these are invalidated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DictObjRemoveKeyList(
+    Tcl_Interp *interp,
+    Tcl_Obj *dictPtr,
+    int keyc,
+    Tcl_Obj *const keyv[])
+{
+    Dict *dict;
+
+    if (Tcl_IsShared(dictPtr)) {
+	Tcl_Panic("%s called with shared object", "Tcl_DictObjRemoveKeyList");
+    }
+    if (keyc < 1) {
+	Tcl_Panic("%s called with empty key list", "Tcl_DictObjRemoveKeyList");
+    }
+
+    dictPtr = TclTraceDictPath(interp, dictPtr, keyc-1,keyv, DICT_PATH_UPDATE);
+    if (dictPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+    DeleteChainEntry(dict, keyv[keyc-1]);
+    InvalidateDictChain(dictPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_NewDictObj --
+ *
+ *	This function is normally called when not debugging: i.e., when
+ *	TCL_MEM_DEBUG is not defined. It creates a new dict object without any
+ *	content.
+ *
+ *	When TCL_MEM_DEBUG is defined, this function just returns the result
+ *	of calling the debugging version Tcl_DbNewDictObj.
+ *
+ * Results:
+ *	A new dict object is returned; it has no keys defined in it. The new
+ *	object's string representation is left NULL, and the ref count of the
+ *	object is 0.
+ *
+ * Side Effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_NewDictObj(void)
+{
+#ifdef TCL_MEM_DEBUG
+    return Tcl_DbNewDictObj("unknown", 0);
+#else /* !TCL_MEM_DEBUG */
+
+    Tcl_Obj *dictPtr;
+    Dict *dict;
+
+    TclNewObj(dictPtr);
+    TclInvalidateStringRep(dictPtr);
+    dict = (Dict *) ckalloc(sizeof(Dict));
+    InitChainTable(dict);
+    dict->epoch = 0;
+    dict->chain = NULL;
+    dict->refcount = 1;
+    dictPtr->internalRep.twoPtrValue.ptr1 = dict;
+    dictPtr->typePtr = &tclDictType;
+    return dictPtr;
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DbNewDictObj --
+ *
+ *	This function is normally called when debugging: i.e., when
+ *	TCL_MEM_DEBUG is defined. It creates new dict objects. It is the same
+ *	as the Tcl_NewDictObj function above except that it calls
+ *	Tcl_DbCkalloc directly with the file name and line number from its
+ *	caller. This simplifies debugging since then the [memory active]
+ *	command will report the correct file name and line number when
+ *	reporting objects that haven't been freed.
+ *
+ *	When TCL_MEM_DEBUG is not defined, this function just returns the
+ *	result of calling Tcl_NewDictObj.
+ *
+ * Results:
+ *	A new dict object is returned; it has no keys defined in it. The new
+ *	object's string representation is left NULL, and the ref count of the
+ *	object is 0.
+ *
+ * Side Effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_DbNewDictObj(
+    const char *file,
+    int line)
+{
+#ifdef TCL_MEM_DEBUG
+    Tcl_Obj *dictPtr;
+    Dict *dict;
+
+    TclDbNewObj(dictPtr, file, line);
+    TclInvalidateStringRep(dictPtr);
+    dict = (Dict *) ckalloc(sizeof(Dict));
+    InitChainTable(dict);
+    dict->epoch = 0;
+    dict->chain = NULL;
+    dict->refcount = 1;
+    dictPtr->internalRep.twoPtrValue.ptr1 = dict;
+    dictPtr->typePtr = &tclDictType;
+    return dictPtr;
+#else /* !TCL_MEM_DEBUG */
+    return Tcl_NewDictObj();
+#endif
+}
+
+/***** START OF FUNCTIONS IMPLEMENTING TCL COMMANDS *****/
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictCreateCmd --
+ *
+ *	This function implements the "dict create" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictCreateCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictObj;
+    int i;
+
+    /*
+     * Must have an even number of arguments; note that number of preceding
+     * arguments (i.e. "dict create" is also even, which makes this much
+     * easier.)
+     */
+
+    if ((objc & 1) == 0) {
+	Tcl_WrongNumArgs(interp, 1, objv, "?key value ...?");
+	return TCL_ERROR;
+    }
+
+    dictObj = Tcl_NewDictObj();
+    for (i=1 ; i<objc ; i+=2) {
+	/*
+	 * The next command is assumed to never fail...
+	 */
+	Tcl_DictObjPut(interp, dictObj, objv[i], objv[i+1]);
+    }
+    Tcl_SetObjResult(interp, dictObj);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictGetCmd --
+ *
+ *	This function implements the "dict get" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictGetCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr, *valuePtr = NULL;
+    int result;
+
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary ?key key ...?");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Test for the special case of no keys, which returns a *list* of all
+     * key,value pairs. We produce a copy here because that makes subsequent
+     * list handling more efficient.
+     */
+
+    if (objc == 2) {
+	Tcl_Obj *keyPtr, *listPtr;
+	Tcl_DictSearch search;
+	int done;
+
+	result = Tcl_DictObjFirst(interp, objv[1], &search,
+		&keyPtr, &valuePtr, &done);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	listPtr = Tcl_NewListObj(0, NULL);
+	while (!done) {
+	    /*
+	     * Assume these won't fail as we have complete control over the
+	     * types of things here.
+	     */
+
+	    Tcl_ListObjAppendElement(interp, listPtr, keyPtr);
+	    Tcl_ListObjAppendElement(interp, listPtr, valuePtr);
+
+	    Tcl_DictObjNext(&search, &keyPtr, &valuePtr, &done);
+	}
+	Tcl_SetObjResult(interp, listPtr);
+	return TCL_OK;
+    }
+
+    /*
+     * Loop through the list of keys, looking up the key at the current index
+     * in the current dictionary each time. Once we've done the lookup, we set
+     * the current dictionary to be the value we looked up (in case the value
+     * was not the last one and we are going through a chain of searches.)
+     * Note that this loop always executes at least once.
+     */
+
+    dictPtr = TclTraceDictPath(interp, objv[1], objc-3,objv+2, DICT_PATH_READ);
+    if (dictPtr == NULL) {
+	return TCL_ERROR;
+    }
+    result = Tcl_DictObjGet(interp, dictPtr, objv[objc-1], &valuePtr);
+    if (result != TCL_OK) {
+	return result;
+    }
+    if (valuePtr == NULL) {
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "key \"", TclGetString(objv[objc-1]),
+		"\" not known in dictionary", NULL);
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, valuePtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictReplaceCmd --
+ *
+ *	This function implements the "dict replace" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictReplaceCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr;
+    int i, result;
+    int allocatedDict = 0;
+
+    if ((objc < 2) || (objc & 1)) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary ?key value ...?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = objv[1];
+    if (Tcl_IsShared(dictPtr)) {
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+	allocatedDict = 1;
+    }
+    for (i=2 ; i<objc ; i+=2) {
+	result = Tcl_DictObjPut(interp, dictPtr, objv[i], objv[i+1]);
+	if (result != TCL_OK) {
+	    if (allocatedDict) {
+		TclDecrRefCount(dictPtr);
+	    }
+	    return TCL_ERROR;
+	}
+    }
+    Tcl_SetObjResult(interp, dictPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictRemoveCmd --
+ *
+ *	This function implements the "dict remove" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictRemoveCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr;
+    int i, result;
+    int allocatedDict = 0;
+
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary ?key ...?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = objv[1];
+    if (Tcl_IsShared(dictPtr)) {
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+	allocatedDict = 1;
+    }
+    for (i=2 ; i<objc ; i++) {
+	result = Tcl_DictObjRemove(interp, dictPtr, objv[i]);
+	if (result != TCL_OK) {
+	    if (allocatedDict) {
+		TclDecrRefCount(dictPtr);
+	    }
+	    return TCL_ERROR;
+	}
+    }
+    Tcl_SetObjResult(interp, dictPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictMergeCmd --
+ *
+ *	This function implements the "dict merge" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#163 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictMergeCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *targetObj, *keyObj, *valueObj;
+    int allocatedDict = 0;
+    int i, done;
+    Tcl_DictSearch search;
+
+    if (objc == 1) {
+	/*
+	 * No dictionary arguments; return default (empty value).
+	 */
+
+	return TCL_OK;
+    }
+
+    /*
+     * Make sure first argument is a dictionary.
+     */
+
+    targetObj = objv[1];
+    if (targetObj->typePtr != &tclDictType) {
+	if (SetDictFromAny(interp, targetObj) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+    }
+
+    if (objc == 2) {
+	/*
+	 * Single argument, return it.
+	 */
+
+	Tcl_SetObjResult(interp, objv[1]);
+	return TCL_OK;
+    }
+
+    /*
+     * Normal behaviour: combining two (or more) dictionaries.
+     */
+
+    if (Tcl_IsShared(targetObj)) {
+	targetObj = Tcl_DuplicateObj(targetObj);
+	allocatedDict = 1;
+    }
+    for (i=2 ; i<objc ; i++) {
+	if (Tcl_DictObjFirst(interp, objv[i], &search, &keyObj, &valueObj,
+		&done) != TCL_OK) {
+	    if (allocatedDict) {
+		TclDecrRefCount(targetObj);
+	    }
+	    return TCL_ERROR;
+	}
+	while (!done) {
+	    /*
+	     * Next line can't fail; already know we have a dictionary in
+	     * targetObj.
+	     */
+
+	    Tcl_DictObjPut(NULL, targetObj, keyObj, valueObj);
+	    Tcl_DictObjNext(&search, &keyObj, &valueObj, &done);
+	}
+	Tcl_DictObjDone(&search);
+    }
+    Tcl_SetObjResult(interp, targetObj);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictKeysCmd --
+ *
+ *	This function implements the "dict keys" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictKeysCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *listPtr;
+    char *pattern = NULL;
+
+    if (objc!=2 && objc!=3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary ?pattern?");
+	return TCL_ERROR;
+    }
+
+    /*
+     * A direct check that we have a dictionary. We don't start the iteration
+     * yet because that might allocate memory or set locks that we do not
+     * need. [Bug 1705778, leak K04]
+     */
+
+    if (objv[1]->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, objv[1]);
+
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+
+    if (objc == 3) {
+	pattern = TclGetString(objv[2]);
+    }
+    listPtr = Tcl_NewListObj(0, NULL);
+    if ((pattern != NULL) && TclMatchIsTrivial(pattern)) {
+	Tcl_Obj *valuePtr = NULL;
+
+	Tcl_DictObjGet(interp, objv[1], objv[2], &valuePtr);
+	if (valuePtr != NULL) {
+	    Tcl_ListObjAppendElement(NULL, listPtr, objv[2]);
+	}
+    } else {
+	Tcl_DictSearch search;
+	Tcl_Obj *keyPtr;
+	int done;
+
+	/*
+	 * At this point, we know we have a dictionary (or at least something
+	 * that can be represented; it could theoretically have shimmered away
+	 * when the pattern was fetched, but that shouldn't be damaging) so we
+	 * can start the iteration process without checking for failures.
+	 */
+
+	Tcl_DictObjFirst(NULL, objv[1], &search, &keyPtr, NULL, &done);
+	for (; !done ; Tcl_DictObjNext(&search, &keyPtr, NULL, &done)) {
+	    if (!pattern || Tcl_StringMatch(TclGetString(keyPtr), pattern)) {
+		Tcl_ListObjAppendElement(NULL, listPtr, keyPtr);
+	    }
+	}
+	Tcl_DictObjDone(&search);
+    }
+
+    Tcl_SetObjResult(interp, listPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictValuesCmd --
+ *
+ *	This function implements the "dict values" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictValuesCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *valuePtr, *listPtr;
+    Tcl_DictSearch search;
+    int done;
+    char *pattern;
+
+    if (objc!=2 && objc!=3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary ?pattern?");
+	return TCL_ERROR;
+    }
+
+    if (Tcl_DictObjFirst(interp, objv[1], &search, NULL, &valuePtr,
+	    &done) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (objc == 3) {
+	pattern = TclGetString(objv[2]);
+    } else {
+	pattern = NULL;
+    }
+    listPtr = Tcl_NewListObj(0, NULL);
+    for (; !done ; Tcl_DictObjNext(&search, NULL, &valuePtr, &done)) {
+	if (pattern==NULL || Tcl_StringMatch(TclGetString(valuePtr),pattern)) {
+	    /*
+	     * Assume this operation always succeeds.
+	     */
+
+	    Tcl_ListObjAppendElement(interp, listPtr, valuePtr);
+	}
+    }
+    Tcl_DictObjDone(&search);
+
+    Tcl_SetObjResult(interp, listPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictSizeCmd --
+ *
+ *	This function implements the "dict size" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictSizeCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    int result, size;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary");
+	return TCL_ERROR;
+    }
+    result = Tcl_DictObjSize(interp, objv[1], &size);
+    if (result == TCL_OK) {
+	Tcl_SetObjResult(interp, Tcl_NewIntObj(size));
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictExistsCmd --
+ *
+ *	This function implements the "dict exists" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictExistsCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr, *valuePtr;
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary key ?key ...?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = TclTraceDictPath(interp, objv[1], objc-3, objv+2,
+	    DICT_PATH_EXISTS);
+    if (dictPtr == NULL || dictPtr == DICT_PATH_NON_EXISTENT
+	    || Tcl_DictObjGet(interp, dictPtr, objv[objc-1],
+		    &valuePtr) != TCL_OK) {
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
+    } else {
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(valuePtr != NULL));
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictInfoCmd --
+ *
+ *	This function implements the "dict info" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictInfoCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr;
+    Dict *dict;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary");
+	return TCL_ERROR;
+    }
+
+    dictPtr = objv[1];
+    if (dictPtr->typePtr != &tclDictType) {
+	int result = SetDictFromAny(interp, dictPtr);
+	if (result != TCL_OK) {
+	    return result;
+	}
+    }
+    dict = dictPtr->internalRep.twoPtrValue.ptr1;
+
+    /*
+     * This next cast is actually OK.
+     */
+
+    Tcl_SetResult(interp, (char *) Tcl_HashStats(&dict->table), TCL_DYNAMIC);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictIncrCmd --
+ *
+ *	This function implements the "dict incr" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictIncrCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    int code = TCL_OK;
+    Tcl_Obj *dictPtr, *valuePtr = NULL;
+
+    if (objc < 3 || objc > 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "varName key ?increment?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	/*
+	 * Variable didn't yet exist. Create new dictionary value.
+	 */
+
+	dictPtr = Tcl_NewDictObj();
+    } else if (Tcl_DictObjGet(interp, dictPtr, objv[2], &valuePtr) != TCL_OK) {
+	/*
+	 * Variable contents are not a dict, report error.
+	 */
+
+	return TCL_ERROR;
+    }
+    if (Tcl_IsShared(dictPtr)) {
+	/*
+	 * A little internals surgery to avoid copying a string rep that will
+	 * soon be no good.
+	 */
+
+	char *saved = dictPtr->bytes;
+	Tcl_Obj *oldPtr = dictPtr;
+
+	dictPtr->bytes = NULL;
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+	oldPtr->bytes = saved;
+    }
+    if (valuePtr == NULL) {
+	/*
+	 * Key not in dictionary. Create new key with increment as value.
+	 */
+
+	if (objc == 4) {
+	    /*
+	     * Verify increment is an integer.
+	     */
+
+	    mp_int increment;
+
+	    code = Tcl_GetBignumFromObj(interp, objv[3], &increment);
+	    if (code != TCL_OK) {
+		Tcl_AddErrorInfo(interp, "\n    (reading increment)");
+	    } else {
+		/*
+		 * Remember to dispose with the bignum as we're not actually
+		 * using it directly. [Bug 2874678]
+		 */
+
+		mp_clear(&increment);
+		Tcl_DictObjPut(interp, dictPtr, objv[2], objv[3]);
+	    }
+	} else {
+	    Tcl_DictObjPut(interp, dictPtr, objv[2], Tcl_NewIntObj(1));
+	}
+    } else {
+	/*
+	 * Key in dictionary. Increment its value with minimum dup.
+	 */
+
+	if (Tcl_IsShared(valuePtr)) {
+	    valuePtr = Tcl_DuplicateObj(valuePtr);
+	    Tcl_DictObjPut(interp, dictPtr, objv[2], valuePtr);
+	}
+	if (objc == 4) {
+	    code = TclIncrObj(interp, valuePtr, objv[3]);
+	} else {
+	    Tcl_Obj *incrPtr = Tcl_NewIntObj(1);
+
+	    Tcl_IncrRefCount(incrPtr);
+	    code = TclIncrObj(interp, valuePtr, incrPtr);
+	    Tcl_DecrRefCount(incrPtr);
+	}
+    }
+    if (code == TCL_OK) {
+	TclInvalidateStringRep(dictPtr);
+	valuePtr = Tcl_ObjSetVar2(interp, objv[1], NULL,
+		dictPtr, TCL_LEAVE_ERR_MSG);
+	if (valuePtr == NULL) {
+	    code = TCL_ERROR;
+	} else {
+	    Tcl_SetObjResult(interp, valuePtr);
+	}
+    } else if (dictPtr->refCount == 0) {
+	Tcl_DecrRefCount(dictPtr);
+    }
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictLappendCmd --
+ *
+ *	This function implements the "dict lappend" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictLappendCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr, *valuePtr, *resultPtr;
+    int i, allocatedDict = 0, allocatedValue = 0;
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "varName key ?value ...?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	allocatedDict = 1;
+	dictPtr = Tcl_NewDictObj();
+    } else if (Tcl_IsShared(dictPtr)) {
+	allocatedDict = 1;
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+    }
+
+    if (Tcl_DictObjGet(interp, dictPtr, objv[2], &valuePtr) != TCL_OK) {
+	if (allocatedDict) {
+	    TclDecrRefCount(dictPtr);
+	}
+	return TCL_ERROR;
+    }
+
+    if (valuePtr == NULL) {
+	valuePtr = Tcl_NewListObj(objc-3, objv+3);
+	allocatedValue = 1;
+    } else {
+	if (Tcl_IsShared(valuePtr)) {
+	    allocatedValue = 1;
+	    valuePtr = Tcl_DuplicateObj(valuePtr);
+	}
+
+	for (i=3 ; i<objc ; i++) {
+	    if (Tcl_ListObjAppendElement(interp, valuePtr,
+		    objv[i]) != TCL_OK) {
+		if (allocatedValue) {
+		    TclDecrRefCount(valuePtr);
+		}
+		if (allocatedDict) {
+		    TclDecrRefCount(dictPtr);
+		}
+		return TCL_ERROR;
+	    }
+	}
+    }
+
+    if (allocatedValue) {
+	Tcl_DictObjPut(interp, dictPtr, objv[2], valuePtr);
+    } else if (dictPtr->bytes != NULL) {
+	TclInvalidateStringRep(dictPtr);
+    }
+
+    resultPtr = Tcl_ObjSetVar2(interp, objv[1], NULL, dictPtr,
+	    TCL_LEAVE_ERR_MSG);
+    if (resultPtr == NULL) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, resultPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictAppendCmd --
+ *
+ *	This function implements the "dict append" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictAppendCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr, *valuePtr, *resultPtr;
+    int i, allocatedDict = 0;
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "varName key ?value ...?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	allocatedDict = 1;
+	dictPtr = Tcl_NewDictObj();
+    } else if (Tcl_IsShared(dictPtr)) {
+	allocatedDict = 1;
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+    }
+
+    if (Tcl_DictObjGet(interp, dictPtr, objv[2], &valuePtr) != TCL_OK) {
+	if (allocatedDict) {
+	    TclDecrRefCount(dictPtr);
+	}
+	return TCL_ERROR;
+    }
+
+    if (valuePtr == NULL) {
+	TclNewObj(valuePtr);
+    } else {
+	if (Tcl_IsShared(valuePtr)) {
+	    valuePtr = Tcl_DuplicateObj(valuePtr);
+	}
+    }
+
+    for (i=3 ; i<objc ; i++) {
+	Tcl_AppendObjToObj(valuePtr, objv[i]);
+    }
+
+    Tcl_DictObjPut(interp, dictPtr, objv[2], valuePtr);
+
+    resultPtr = Tcl_ObjSetVar2(interp, objv[1], NULL, dictPtr,
+	    TCL_LEAVE_ERR_MSG);
+    if (resultPtr == NULL) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, resultPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictForCmd --
+ *
+ *	This function implements the "dict for" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictForCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *scriptObj, *keyVarObj, *valueVarObj;
+    Tcl_Obj **varv, *keyObj, *valueObj;
+    Tcl_DictSearch search;
+    int varc, done, result;
+
+    if (objc != 4) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"{keyVar valueVar} dictionary script");
+	return TCL_ERROR;
+    }
+
+    if (TclListObjGetElements(interp, objv[1], &varc, &varv) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (varc != 2) {
+	Tcl_SetResult(interp, "must have exactly two variable names",
+		TCL_STATIC);
+	return TCL_ERROR;
+    }
+    keyVarObj = varv[0];
+    valueVarObj = varv[1];
+    scriptObj = objv[3];
+
+    if (Tcl_DictObjFirst(interp, objv[2], &search, &keyObj, &valueObj,
+	    &done) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Make sure that these objects (which we need throughout the body of the
+     * loop) don't vanish. Note that the dictionary internal rep is locked
+     * internally so that updates, shimmering, etc are not a problem.
+     */
+
+    Tcl_IncrRefCount(keyVarObj);
+    Tcl_IncrRefCount(valueVarObj);
+    Tcl_IncrRefCount(scriptObj);
+
+    result = TCL_OK;
+    while (!done) {
+	/*
+	 * Stop the value from getting hit in any way by any traces on the key
+	 * variable.
+	 */
+
+	Tcl_IncrRefCount(valueObj);
+	if (Tcl_ObjSetVar2(interp, keyVarObj, NULL, keyObj, 0) == NULL) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "couldn't set key variable: \"",
+		    TclGetString(keyVarObj), "\"", NULL);
+	    TclDecrRefCount(valueObj);
+	    result = TCL_ERROR;
+	    break;
+	}
+	TclDecrRefCount(valueObj);
+	if (Tcl_ObjSetVar2(interp, valueVarObj, NULL, valueObj, 0) == NULL) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "couldn't set value variable: \"",
+		    TclGetString(valueVarObj), "\"", NULL);
+	    result = TCL_ERROR;
+	    break;
+	}
+
+	/*
+	 * TIP #280. Make invoking context available to loop body.
+	 */
+
+	result = TclEvalObjEx(interp, scriptObj, 0, iPtr->cmdFramePtr, 3);
+	if (result == TCL_CONTINUE) {
+	    result = TCL_OK;
+	} else if (result != TCL_OK) {
+	    if (result == TCL_BREAK) {
+		result = TCL_OK;
+	    } else if (result == TCL_ERROR) {
+		Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			"\n    (\"dict for\" body line %d)",
+			interp->errorLine));
+	    }
+	    break;
+	}
+
+	Tcl_DictObjNext(&search, &keyObj, &valueObj, &done);
+    }
+
+    /*
+     * Stop holding a reference to these objects.
+     */
+
+    TclDecrRefCount(keyVarObj);
+    TclDecrRefCount(valueVarObj);
+    TclDecrRefCount(scriptObj);
+
+    Tcl_DictObjDone(&search);
+    if (result == TCL_OK) {
+	Tcl_ResetResult(interp);
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictSetCmd --
+ *
+ *	This function implements the "dict set" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictSetCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr, *resultPtr;
+    int result, allocatedDict = 0;
+
+    if (objc < 4) {
+	Tcl_WrongNumArgs(interp, 1, objv, "varName key ?key ...? value");
+	return TCL_ERROR;
+    }
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	allocatedDict = 1;
+	dictPtr = Tcl_NewDictObj();
+    } else if (Tcl_IsShared(dictPtr)) {
+	allocatedDict = 1;
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+    }
+
+    result = Tcl_DictObjPutKeyList(interp, dictPtr, objc-3, objv+2,
+	    objv[objc-1]);
+    if (result != TCL_OK) {
+	if (allocatedDict) {
+	    TclDecrRefCount(dictPtr);
+	}
+	return TCL_ERROR;
+    }
+
+    resultPtr = Tcl_ObjSetVar2(interp, objv[1], NULL, dictPtr,
+	    TCL_LEAVE_ERR_MSG);
+    if (resultPtr == NULL) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, resultPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictUnsetCmd --
+ *
+ *	This function implements the "dict unset" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictUnsetCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Tcl_Obj *dictPtr, *resultPtr;
+    int result, allocatedDict = 0;
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "varName key ?key ...?");
+	return TCL_ERROR;
+    }
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	allocatedDict = 1;
+	dictPtr = Tcl_NewDictObj();
+    } else if (Tcl_IsShared(dictPtr)) {
+	allocatedDict = 1;
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+    }
+
+    result = Tcl_DictObjRemoveKeyList(interp, dictPtr, objc-2, objv+2);
+    if (result != TCL_OK) {
+	if (allocatedDict) {
+	    TclDecrRefCount(dictPtr);
+	}
+	return TCL_ERROR;
+    }
+
+    resultPtr = Tcl_ObjSetVar2(interp, objv[1], NULL, dictPtr,
+	    TCL_LEAVE_ERR_MSG);
+    if (resultPtr == NULL) {
+	return TCL_ERROR;
+    }
+    Tcl_SetObjResult(interp, resultPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictFilterCmd --
+ *
+ *	This function implements the "dict filter" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictFilterCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Interp *iPtr = (Interp *) interp;
+    static const char *filters[] = {
+	"key", "script", "value", NULL
+    };
+    enum FilterTypes {
+	FILTER_KEYS, FILTER_SCRIPT, FILTER_VALUES
+    };
+    Tcl_Obj *scriptObj, *keyVarObj, *valueVarObj;
+    Tcl_Obj **varv, *keyObj, *valueObj, *resultObj, *boolObj;
+    Tcl_DictSearch search;
+    int index, varc, done, result, satisfied;
+    char *pattern;
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictionary filterType ...");
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIndexFromObj(interp, objv[2], filters, "filterType",
+	     0, &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    switch ((enum FilterTypes) index) {
+    case FILTER_KEYS:
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 1, objv, "dictionary key globPattern");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Create a dictionary whose keys all match a certain pattern.
+	 */
+
+	if (Tcl_DictObjFirst(interp, objv[1], &search,
+		&keyObj, &valueObj, &done) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	pattern = TclGetString(objv[3]);
+	resultObj = Tcl_NewDictObj();
+	if (TclMatchIsTrivial(pattern)) {
+	    /*
+	     * Must release the search lock here to prevent a memory leak
+	     * since we are not exhausing the search. [Bug 1705778, leak K05]
+	     */
+
+	    Tcl_DictObjDone(&search);
+	    Tcl_DictObjGet(interp, objv[1], objv[3], &valueObj);
+	    if (valueObj != NULL) {
+		Tcl_DictObjPut(interp, resultObj, objv[3], valueObj);
+	    }
+	} else {
+	    while (!done) {
+		if (Tcl_StringMatch(TclGetString(keyObj), pattern)) {
+		    Tcl_DictObjPut(interp, resultObj, keyObj, valueObj);
+		}
+		Tcl_DictObjNext(&search, &keyObj, &valueObj, &done);
+	    }
+	}
+	Tcl_SetObjResult(interp, resultObj);
+	return TCL_OK;
+
+    case FILTER_VALUES:
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 1, objv, "dictionary value globPattern");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Create a dictionary whose values all match a certain pattern.
+	 */
+
+	if (Tcl_DictObjFirst(interp, objv[1], &search,
+		&keyObj, &valueObj, &done) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	pattern = TclGetString(objv[3]);
+	resultObj = Tcl_NewDictObj();
+	while (!done) {
+	    if (Tcl_StringMatch(TclGetString(valueObj), pattern)) {
+		Tcl_DictObjPut(interp, resultObj, keyObj, valueObj);
+	    }
+	    Tcl_DictObjNext(&search, &keyObj, &valueObj, &done);
+	}
+	Tcl_SetObjResult(interp, resultObj);
+	return TCL_OK;
+
+    case FILTER_SCRIPT:
+	if (objc != 5) {
+	    Tcl_WrongNumArgs(interp, 1, objv,
+		    "dictionary script {keyVar valueVar} filterScript");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Create a dictionary whose key,value pairs all satisfy a script
+	 * (i.e. get a true boolean result from its evaluation). Massive
+	 * copying from the "dict for" implementation has occurred!
+	 */
+
+	if (TclListObjGetElements(interp, objv[3], &varc, &varv) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (varc != 2) {
+	    Tcl_SetResult(interp, "must have exactly two variable names",
+		    TCL_STATIC);
+	    return TCL_ERROR;
+	}
+	keyVarObj = varv[0];
+	valueVarObj = varv[1];
+	scriptObj = objv[4];
+
+	/*
+	 * Make sure that these objects (which we need throughout the body of
+	 * the loop) don't vanish. Note that the dictionary internal rep is
+	 * locked internally so that updates, shimmering, etc are not a
+	 * problem.
+	 */
+
+	Tcl_IncrRefCount(keyVarObj);
+	Tcl_IncrRefCount(valueVarObj);
+	Tcl_IncrRefCount(scriptObj);
+
+	result = Tcl_DictObjFirst(interp, objv[1],
+		&search, &keyObj, &valueObj, &done);
+	if (result != TCL_OK) {
+	    TclDecrRefCount(keyVarObj);
+	    TclDecrRefCount(valueVarObj);
+	    TclDecrRefCount(scriptObj);
+	    return TCL_ERROR;
+	}
+
+	resultObj = Tcl_NewDictObj();
+
+	while (!done) {
+	    /*
+	     * Stop the value from getting hit in any way by any traces on the
+	     * key variable.
+	     */
+
+	    Tcl_IncrRefCount(keyObj);
+	    Tcl_IncrRefCount(valueObj);
+	    if (Tcl_ObjSetVar2(interp, keyVarObj, NULL, keyObj,
+		    TCL_LEAVE_ERR_MSG) == NULL) {
+		Tcl_ResetResult(interp);
+		Tcl_AppendResult(interp, "couldn't set key variable: \"",
+			TclGetString(keyVarObj), "\"", NULL);
+		result = TCL_ERROR;
+		goto abnormalResult;
+	    }
+	    if (Tcl_ObjSetVar2(interp, valueVarObj, NULL, valueObj,
+		    TCL_LEAVE_ERR_MSG) == NULL) {
+		Tcl_ResetResult(interp);
+		Tcl_AppendResult(interp, "couldn't set value variable: \"",
+			TclGetString(valueVarObj), "\"", NULL);
+		goto abnormalResult;
+	    }
+
+	    /*
+	     * TIP #280. Make invoking context available to loop body.
+	     */
+
+	    result = TclEvalObjEx(interp, scriptObj, 0, iPtr->cmdFramePtr, 4);
+	    switch (result) {
+	    case TCL_OK:
+		boolObj = Tcl_GetObjResult(interp);
+		Tcl_IncrRefCount(boolObj);
+		Tcl_ResetResult(interp);
+		if (Tcl_GetBooleanFromObj(interp, boolObj,
+			&satisfied) != TCL_OK) {
+		    TclDecrRefCount(boolObj);
+		    result = TCL_ERROR;
+		    goto abnormalResult;
+		}
+		TclDecrRefCount(boolObj);
+		if (satisfied) {
+		    Tcl_DictObjPut(interp, resultObj, keyObj, valueObj);
+		}
+		break;
+	    case TCL_BREAK:
+		/*
+		 * Force loop termination by calling Tcl_DictObjDone; this
+		 * makes the next Tcl_DictObjNext say there is nothing more to
+		 * do.
+		 */
+
+		Tcl_ResetResult(interp);
+		Tcl_DictObjDone(&search);
+	    case TCL_CONTINUE:
+		result = TCL_OK;
+		break;
+	    case TCL_ERROR:
+		Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			"\n    (\"dict filter\" script line %d)",
+			interp->errorLine));
+	    default:
+		goto abnormalResult;
+	    }
+
+	    TclDecrRefCount(keyObj);
+	    TclDecrRefCount(valueObj);
+
+	    Tcl_DictObjNext(&search, &keyObj, &valueObj, &done);
+	}
+
+	/*
+	 * Stop holding a reference to these objects.
+	 */
+
+	TclDecrRefCount(keyVarObj);
+	TclDecrRefCount(valueVarObj);
+	TclDecrRefCount(scriptObj);
+	Tcl_DictObjDone(&search);
+
+	if (result == TCL_OK) {
+	    Tcl_SetObjResult(interp, resultObj);
+	} else {
+	    TclDecrRefCount(resultObj);
+	}
+	return result;
+
+    abnormalResult:
+	Tcl_DictObjDone(&search);
+	TclDecrRefCount(keyObj);
+	TclDecrRefCount(valueObj);
+	TclDecrRefCount(keyVarObj);
+	TclDecrRefCount(valueVarObj);
+	TclDecrRefCount(scriptObj);
+	TclDecrRefCount(resultObj);
+	return result;
+    }
+    Tcl_Panic("unexpected fallthrough");
+    /* Control never reaches this point. */
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictUpdateCmd --
+ *
+ *	This function implements the "dict update" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#212 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictUpdateCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *dictPtr, *objPtr;
+    int i, result, dummy;
+    Tcl_InterpState state;
+
+    if (objc < 5 || !(objc & 1)) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"varName key varName ?key varName ...? script");
+	return TCL_ERROR;
+    }
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG);
+    if (dictPtr == NULL) {
+	return TCL_ERROR;
+    }
+    if (Tcl_DictObjSize(interp, dictPtr, &dummy) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    Tcl_IncrRefCount(dictPtr);
+    for (i=2 ; i+2<objc ; i+=2) {
+	if (Tcl_DictObjGet(interp, dictPtr, objv[i], &objPtr) != TCL_OK) {
+	    TclDecrRefCount(dictPtr);
+	    return TCL_ERROR;
+	}
+	if (objPtr == NULL) {
+	    /* ??? */
+	    Tcl_UnsetVar(interp, Tcl_GetString(objv[i+1]), 0);
+	} else if (Tcl_ObjSetVar2(interp, objv[i+1], NULL, objPtr,
+		TCL_LEAVE_ERR_MSG) == NULL) {
+	    TclDecrRefCount(dictPtr);
+	    return TCL_ERROR;
+	}
+    }
+    TclDecrRefCount(dictPtr);
+
+    /*
+     * Execute the body.
+     */
+
+    result = TclEvalObjEx(interp, objv[objc-1], 0, iPtr->cmdFramePtr, objc-1);
+    if (result == TCL_ERROR) {
+	Tcl_AddErrorInfo(interp, "\n    (body of \"dict update\")");
+    }
+
+    /*
+     * If the dictionary variable doesn't exist, drop everything silently.
+     */
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	return result;
+    }
+
+    /*
+     * Double-check that it is still a dictionary.
+     */
+
+    state = Tcl_SaveInterpState(interp, result);
+    if (Tcl_DictObjSize(interp, dictPtr, &dummy) != TCL_OK) {
+	Tcl_DiscardInterpState(state);
+	return TCL_ERROR;
+    }
+
+    if (Tcl_IsShared(dictPtr)) {
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+    }
+
+    /*
+     * Write back the values from the variables, treating failure to read as
+     * an instruction to remove the key.
+     */
+
+    for (i=2 ; i+2<objc ; i+=2) {
+	objPtr = Tcl_ObjGetVar2(interp, objv[i+1], NULL, 0);
+	if (objPtr == NULL) {
+	    Tcl_DictObjRemove(interp, dictPtr, objv[i]);
+	} else if (objPtr == dictPtr) {
+	    /*
+	     * Someone is messing us around, trying to build a recursive
+	     * structure. [Bug 1786481]
+	     */
+
+	    Tcl_DictObjPut(interp, dictPtr, objv[i],
+		    Tcl_DuplicateObj(objPtr));
+	} else {
+	    /* Shouldn't fail */
+	    Tcl_DictObjPut(interp, dictPtr, objv[i], objPtr);
+	}
+    }
+
+    /*
+     * Write the dictionary back to its variable.
+     */
+
+    if (Tcl_ObjSetVar2(interp, objv[1], NULL, dictPtr,
+	    TCL_LEAVE_ERR_MSG) == NULL) {
+	Tcl_DiscardInterpState(state);
+	return TCL_ERROR;
+    }
+
+    return Tcl_RestoreInterpState(interp, state);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DictWithCmd --
+ *
+ *	This function implements the "dict with" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#212 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+DictWithCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *dictPtr, *keysPtr, *keyPtr, *valPtr, **keyv, *leafPtr;
+    Tcl_DictSearch s;
+    Tcl_InterpState state;
+    int done, result, keyc, i, allocdict = 0;
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "dictVar ?key ...? script");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Get the dictionary to open out.
+     */
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG);
+    if (dictPtr == NULL) {
+	return TCL_ERROR;
+    }
+    if (objc > 3) {
+	dictPtr = TclTraceDictPath(interp, dictPtr, objc-3, objv+2,
+		DICT_PATH_READ);
+	if (dictPtr == NULL) {
+	    return TCL_ERROR;
+	}
+    }
+
+    /*
+     * Go over the list of keys and write each corresponding value to a
+     * variable in the current context with the same name. Also keep a copy of
+     * the keys so we can write back properly later on even if the dictionary
+     * has been structurally modified.
+     */
+
+    if (Tcl_DictObjFirst(interp, dictPtr, &s, &keyPtr, &valPtr,
+	    &done) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    TclNewObj(keysPtr);
+    Tcl_IncrRefCount(keysPtr);
+
+    for (; !done ; Tcl_DictObjNext(&s, &keyPtr, &valPtr, &done)) {
+	Tcl_ListObjAppendElement(NULL, keysPtr, keyPtr);
+	if (Tcl_ObjSetVar2(interp, keyPtr, NULL, valPtr,
+		TCL_LEAVE_ERR_MSG) == NULL) {
+	    TclDecrRefCount(keysPtr);
+	    Tcl_DictObjDone(&s);
+	    return TCL_ERROR;
+	}
+    }
+
+    /*
+     * Execute the body, while making the invoking context available to the
+     * loop body (TIP#280).
+     */
+
+    result = TclEvalObjEx(interp, objv[objc-1], 0, iPtr->cmdFramePtr, objc-1);
+    if (result == TCL_ERROR) {
+	Tcl_AddErrorInfo(interp, "\n    (body of \"dict with\")");
+    }
+
+    /*
+     * If the dictionary variable doesn't exist, drop everything silently.
+     */
+
+    dictPtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
+    if (dictPtr == NULL) {
+	TclDecrRefCount(keysPtr);
+	return result;
+    }
+
+    /*
+     * Double-check that it is still a dictionary.
+     */
+
+    state = Tcl_SaveInterpState(interp, result);
+    if (Tcl_DictObjSize(interp, dictPtr, &i) != TCL_OK) {
+	TclDecrRefCount(keysPtr);
+	Tcl_DiscardInterpState(state);
+	return TCL_ERROR;
+    }
+
+    if (Tcl_IsShared(dictPtr)) {
+	dictPtr = Tcl_DuplicateObj(dictPtr);
+	allocdict = 1;
+    }
+
+    if (objc > 3) {
+	/*
+	 * Want to get to the dictionary which we will update; need to do
+	 * prepare-for-update de-sharing along the path *but* avoid generating
+	 * an error on a non-existant path (we'll treat that the same as a
+	 * non-existant variable. Luckily, the de-sharing operation isn't
+	 * deeply damaging if we don't go on to update; it's just less than
+	 * perfectly efficient (but no memory should be leaked).
+	 */
+
+	leafPtr = TclTraceDictPath(interp, dictPtr, objc-3, objv+2,
+		DICT_PATH_EXISTS | DICT_PATH_UPDATE);
+	if (leafPtr == NULL) {
+	    TclDecrRefCount(keysPtr);
+	    if (allocdict) {
+		TclDecrRefCount(dictPtr);
+	    }
+	    Tcl_DiscardInterpState(state);
+	    return TCL_ERROR;
+	}
+	if (leafPtr == DICT_PATH_NON_EXISTENT) {
+	    TclDecrRefCount(keysPtr);
+	    if (allocdict) {
+		TclDecrRefCount(dictPtr);
+	    }
+	    return Tcl_RestoreInterpState(interp, state);
+	}
+    } else {
+	leafPtr = dictPtr;
+    }
+
+    /*
+     * Now process our updates on the leaf dictionary.
+     */
+
+    TclListObjGetElements(NULL, keysPtr, &keyc, &keyv);
+    for (i=0 ; i<keyc ; i++) {
+	valPtr = Tcl_ObjGetVar2(interp, keyv[i], NULL, 0);
+	if (valPtr == NULL) {
+	    Tcl_DictObjRemove(NULL, leafPtr, keyv[i]);
+	} else if (leafPtr == valPtr) {
+	    /*
+	     * Someone is messing us around, trying to build a recursive
+	     * structure. [Bug 1786481]
+	     */
+
+	    Tcl_DictObjPut(NULL, leafPtr, keyv[i], Tcl_DuplicateObj(valPtr));
+	} else {
+	    Tcl_DictObjPut(NULL, leafPtr, keyv[i], valPtr);
+	}
+    }
+    TclDecrRefCount(keysPtr);
+
+    /*
+     * Ensure that none of the dictionaries in the chain still have a string
+     * rep.
+     */
+
+    if (objc > 3) {
+	InvalidateDictChain(leafPtr);
+    }
+
+    /*
+     * Write back the outermost dictionary to the variable.
+     */
+
+    if (Tcl_ObjSetVar2(interp, objv[1], NULL, dictPtr,
+	    TCL_LEAVE_ERR_MSG) == NULL) {
+	Tcl_DiscardInterpState(state);
+	return TCL_ERROR;
+    }
+    return Tcl_RestoreInterpState(interp, state);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitDictCmd --
+ *
+ *	This function is create the "dict" Tcl command. See the user
+ *	documentation for details on what it does, and TIP#111 for the formal
+ *	specification.
+ *
+ * Results:
+ *	A Tcl command handle.
+ *
+ * Side effects:
+ *	May advance compilation epoch.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Command
+TclInitDictCmd(
+    Tcl_Interp *interp)
+{
+    return TclMakeEnsemble(interp, "dict", implementationMap);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclEncoding.c b/generic/tclEncoding.c
index 73c4067..c2f1b4b 100644
--- a/generic/tclEncoding.c
+++ b/generic/tclEncoding.c
@@ -5,43 +5,41 @@
  *
  * Copyright (c) 1996-1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
-typedef size_t (LengthProc)_ANSI_ARGS_((CONST char *src));
+typedef size_t (LengthProc)(const char *src);
 
 /*
- * The following data structure represents an encoding, which describes how
- * to convert between various character sets and UTF-8.
+ * The following data structure represents an encoding, which describes how to
+ * convert between various character sets and UTF-8.
  */
 
 typedef struct Encoding {
-    char *name;			/* Name of encoding.  Malloced because (1)
-				 * hash table entry that owns this encoding
-				 * may be freed prior to this encoding being
-				 * freed, (2) string passed in the
-				 * Tcl_EncodingType structure may not be
-				 * persistent. */
+    char *name;			/* Name of encoding. Malloced because (1) hash
+				 * table entry that owns this encoding may be
+				 * freed prior to this encoding being freed,
+				 * (2) string passed in the Tcl_EncodingType
+				 * structure may not be persistent. */
     Tcl_EncodingConvertProc *toUtfProc;
-				/* Procedure to convert from external
-				 * encoding into UTF-8. */
+				/* Function to convert from external encoding
+				 * into UTF-8. */
     Tcl_EncodingConvertProc *fromUtfProc;
-				/* Procedure to convert from UTF-8 into
+				/* Function to convert from UTF-8 into
 				 * external encoding. */
     Tcl_EncodingFreeProc *freeProc;
-				/* If non-NULL, procedure to call when this
+				/* If non-NULL, function to call when this
 				 * encoding is deleted. */
     int nullSize;		/* Number of 0x00 bytes that signify
-				 * end-of-string in this encoding.  This
-				 * number is used to determine the source
-				 * string length when the srcLen argument is
-				 * negative.  This number can be 1 or 2. */
+				 * end-of-string in this encoding. This number
+				 * is used to determine the source string
+				 * length when the srcLen argument is
+				 * negative. This number can be 1 or 2. */
     ClientData clientData;	/* Arbitrary value associated with encoding
-				 * type.  Passed to conversion procedures. */
+				 * type. Passed to conversion functions. */
     LengthProc *lengthProc;	/* Function to compute length of
 				 * null-terminated strings in this encoding.
 				 * If nullSize is 1, this is strlen; if
@@ -54,15 +52,15 @@ typedef struct Encoding {
 
 /*
  * The following structure is the clientData for a dynamically-loaded,
- * table-driven encoding created by LoadTableEncoding().  It maps between
+ * table-driven encoding created by LoadTableEncoding(). It maps between
  * Unicode and a single-byte, double-byte, or multibyte (1 or 2 bytes only)
  * encoding.
  */
 
 typedef struct TableEncodingData {
-    int fallback;		/* Character (in this encoding) to
-				 * substitute when this encoding cannot
-				 * represent a UTF-8 character. */
+    int fallback;		/* Character (in this encoding) to substitute
+				 * when this encoding cannot represent a UTF-8
+				 * character. */
     char prefixBytes[256];	/* If a byte in the input stream is a lead
 				 * byte for a 2-byte sequence, the
 				 * corresponding entry in this array is 1,
@@ -70,14 +68,15 @@ typedef struct TableEncodingData {
     unsigned short **toUnicode;	/* Two dimensional sparse matrix to map
 				 * characters from the encoding to Unicode.
 				 * Each element of the toUnicode array points
-				 * to an array of 256 shorts.  If there is no
+				 * to an array of 256 shorts. If there is no
 				 * corresponding character in Unicode, the
-				 * value in the matrix is 0x0000.  malloc'd. */
+				 * value in the matrix is 0x0000.
+				 * malloc'd. */
     unsigned short **fromUnicode;
 				/* Two dimensional sparse matrix to map
 				 * characters from Unicode to the encoding.
 				 * Each element of the fromUnicode array
-				 * points to an array of 256 shorts.  If there
+				 * points to an array of 256 shorts. If there
 				 * is no corresponding character the encoding,
 				 * the value in the matrix is 0x0000.
 				 * malloc'd. */
@@ -85,11 +84,11 @@ typedef struct TableEncodingData {
 
 /*
  * The following structures is the clientData for a dynamically-loaded,
- * escape-driven encoding that is itself comprised of other simpler
- * encodings.  An example is "iso-2022-jp", which uses escape sequences to
- * switch between ascii, jis0208, jis0212, gb2312, and ksc5601.  Note that
- * "escape-driven" does not necessarily mean that the ESCAPE character is
- * the character used for switching character sets.
+ * escape-driven encoding that is itself comprised of other simpler encodings.
+ * An example is "iso-2022-jp", which uses escape sequences to switch between
+ * ascii, jis0208, jis0212, gb2312, and ksc5601. Note that "escape-driven"
+ * does not necessarily mean that the ESCAPE character is the character used
+ * for switching character sets.
  */
 
 typedef struct EscapeSubTable {
@@ -102,29 +101,29 @@ typedef struct EscapeSubTable {
 } EscapeSubTable;
 
 typedef struct EscapeEncodingData {
-    int fallback;		/* Character (in this encoding) to
-				 * substitute when this encoding cannot
-				 * represent a UTF-8 character. */
+    int fallback;		/* Character (in this encoding) to substitute
+				 * when this encoding cannot represent a UTF-8
+				 * character. */
     unsigned int initLen;	/* Length of following string. */
     char init[16];		/* String to emit or expect before first char
 				 * in conversion. */
     unsigned int finalLen;	/* Length of following string. */
-    char final[16];		/* String to emit or expect after last char
-				 * in conversion. */
-    char prefixBytes[256];	/* If a byte in the input stream is the 
-				 * first character of one of the escape 
-				 * sequences in the following array, the 
-				 * corresponding entry in this array is 1,
-				 * otherwise it is 0. */
+    char final[16];		/* String to emit or expect after last char in
+				 * conversion. */
+    char prefixBytes[256];	/* If a byte in the input stream is the first
+				 * character of one of the escape sequences in
+				 * the following array, the corresponding
+				 * entry in this array is 1, otherwise it is
+				 * 0. */
     int numSubTables;		/* Length of following array. */
-    EscapeSubTable subTables[1];/* Information about each EscapeSubTable
-				 * used by this encoding type.  The actual 
-				 * size will be as large as necessary to 
-				 * hold all EscapeSubTables. */
+    EscapeSubTable subTables[1];/* Information about each EscapeSubTable used
+				 * by this encoding type. The actual size will
+				 * be as large as necessary to hold all
+				 * EscapeSubTables. */
 } EscapeEncodingData;
 
 /*
- * Constants used when loading an encoding file to identify the type of the
+ * constants used when loading an encoding file to identify the type of the
  * file.
  */
 
@@ -134,27 +133,51 @@ typedef struct EscapeEncodingData {
 #define ENCODING_ESCAPE		3
 
 /*
- * Initialize the default encoding directory.  If this variable contains
- * a non NULL value, it will be the first path used to locate the
- * system encoding files.
+ * A list of directories in which Tcl should look for *.enc files. This list
+ * is shared by all threads. Access is governed by a mutex lock.
  */
 
-char *tclDefaultEncodingDir = NULL;
+static TclInitProcessGlobalValueProc InitializeEncodingSearchPath;
+static ProcessGlobalValue encodingSearchPath = {
+    0, 0, NULL, NULL, InitializeEncodingSearchPath, NULL, NULL
+};
 
-static int encodingsInitialized  = 0;
+/*
+ * A map from encoding names to the directories in which their data files have
+ * been seen. The string value of the map is shared by all threads. Access to
+ * the shared string is governed by a mutex lock.
+ */
+
+static ProcessGlobalValue encodingFileMap = {
+    0, 0, NULL, NULL, NULL, NULL, NULL
+};
 
 /*
- * Hash table that keeps track of all loaded Encodings.  Keys are
- * the string names that represent the encoding, values are (Encoding *).
+ * A list of directories making up the "library path". Historically this
+ * search path has served many uses, but the only one remaining is a base for
+ * the encodingSearchPath above. If the application does not explicitly set
+ * the encodingSearchPath, then it will be initialized by appending /encoding
+ * to each directory in this "libraryPath".
  */
- 
+
+static ProcessGlobalValue libraryPath = {
+    0, 0, NULL, NULL, TclpInitLibraryPath, NULL, NULL
+};
+
+static int encodingsInitialized = 0;
+
+/*
+ * Hash table that keeps track of all loaded Encodings. Keys are the string
+ * names that represent the encoding, values are (Encoding *).
+ */
+
 static Tcl_HashTable encodingTable;
 TCL_DECLARE_MUTEX(encodingMutex)
 
 /*
- * The following are used to hold the default and current system encodings.  
- * If NULL is passed to one of the conversion routines, the current setting 
- * of the system encoding will be used to perform the conversion.
+ * The following are used to hold the default and current system encodings.
+ * If NULL is passed to one of the conversion routines, the current setting of
+ * the system encoding will be used to perform the conversion.
  */
 
 static Tcl_Encoding defaultEncoding;
@@ -168,125 +191,129 @@ static Tcl_Encoding systemEncoding;
 static unsigned short emptyPage[256];
 
 /*
- * Procedures used only in this module.
+ * Functions used only in this module.
  */
 
-static int		BinaryProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+static int		BinaryProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static void		DupEncodingIntRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *dupPtr));
-static void		EscapeFreeProc _ANSI_ARGS_((ClientData clientData));
-static int		EscapeFromUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static void		DupEncodingIntRep(Tcl_Obj *srcPtr, Tcl_Obj *dupPtr);
+static void		EscapeFreeProc(ClientData clientData);
+static int		EscapeFromUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		EscapeToUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		EscapeToUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static void		FreeEncoding _ANSI_ARGS_((Tcl_Encoding encoding));
-static void		FreeEncodingIntRep _ANSI_ARGS_((Tcl_Obj *objPtr));
-static Encoding *	GetTableEncoding _ANSI_ARGS_((
-			    EscapeEncodingData *dataPtr, int state));
-static Tcl_Encoding	LoadEncodingFile _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *name));
-static Tcl_Encoding	LoadTableEncoding _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *name, int type, Tcl_Channel chan));
-static Tcl_Encoding	LoadEscapeEncoding _ANSI_ARGS_((CONST char *name, 
-			    Tcl_Channel chan));
-static Tcl_Channel	OpenEncodingFile _ANSI_ARGS_((CONST char *dir,
-			    CONST char *name));
-static void		TableFreeProc _ANSI_ARGS_((ClientData clientData));
-static int		TableFromUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static void		FillEncodingFileMap(void);
+static void		FreeEncoding(Tcl_Encoding encoding);
+static void		FreeEncodingIntRep(Tcl_Obj *objPtr);
+static Encoding *	GetTableEncoding(EscapeEncodingData *dataPtr,
+			    int state);
+static Tcl_Encoding	LoadEncodingFile(Tcl_Interp *interp, const char *name);
+static Tcl_Encoding	LoadTableEncoding(const char *name, int type,
+			    Tcl_Channel chan);
+static Tcl_Encoding	LoadEscapeEncoding(const char *name, Tcl_Channel chan);
+static Tcl_Channel	OpenEncodingFileChannel(Tcl_Interp *interp,
+			    const char *name);
+static void		TableFreeProc(ClientData clientData);
+static int		TableFromUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		TableToUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		TableToUtfProc(ClientData clientData, const char *src,
+			    int srcLen, int flags, Tcl_EncodingState *statePtr,
+			    char *dst, int dstLen, int *srcReadPtr,
+			    int *dstWrotePtr, int *dstCharsPtr);
+static size_t		unilen(const char *src);
+static int		UnicodeToUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static size_t		unilen _ANSI_ARGS_((CONST char *src));
-static int		UnicodeToUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		UtfToUnicodeProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		UtfToUnicodeProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		UtfToUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		UtfToUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr, int pureNullMode);
+static int		UtfIntToUtfExtProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr, int pureNullMode));
-static int		UtfIntToUtfExtProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		UtfExtToUtfIntProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		UtfExtToUtfIntProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		Iso88591FromUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst, int dstLen,
 			    int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		TclFindEncodings _ANSI_ARGS_((CONST char *argv0));
+			    int *dstCharsPtr);
+static int		Iso88591ToUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
+			    Tcl_EncodingState *statePtr, char *dst,
+			    int dstLen, int *srcReadPtr, int *dstWrotePtr,
+			    int *dstCharsPtr);
 
 /*
- * A Tcl_ObjType for holding a cached Tcl_Encoding as the intrep.
- * This should help the lifetime of encodings be more useful.  
+ * A Tcl_ObjType for holding a cached Tcl_Encoding in the twoPtrValue.ptr1 field
+ * of the intrep. This should help the lifetime of encodings be more useful.
  * See concerns raised in [Bug 1077262].
  */
 
-static Tcl_ObjType EncodingType = {
+static Tcl_ObjType encodingType = {
     "encoding", FreeEncodingIntRep, DupEncodingIntRep, NULL, NULL
 };
-
 
 /*
  *----------------------------------------------------------------------
  *
- * TclGetEncodingFromObj --
+ * Tcl_GetEncodingFromObj --
  *
- *      Writes to (*encodingPtr) the Tcl_Encoding value of (*objPtr),
- *      if possible, and returns TCL_OK.  If no such encoding exists,
- *      TCL_ERROR is returned, and if interp is non-NULL, an error message
- *      is written there.
+ *	Writes to (*encodingPtr) the Tcl_Encoding value of (*objPtr), if
+ *	possible, and returns TCL_OK. If no such encoding exists, TCL_ERROR is
+ *	returned, and if interp is non-NULL, an error message is written
+ *	there.
  *
  * Results:
- *      Standard Tcl return code.
+ *	Standard Tcl return code.
  *
  * Side effects:
  * 	Caches the Tcl_Encoding value as the internal rep of (*objPtr).
  *
  *----------------------------------------------------------------------
  */
-int 
-TclGetEncodingFromObj(interp, objPtr, encodingPtr)
-    Tcl_Interp *interp;
-    Tcl_Obj *objPtr;
-    Tcl_Encoding *encodingPtr;
+
+int
+Tcl_GetEncodingFromObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr,
+    Tcl_Encoding *encodingPtr)
 {
-    CONST char *name = Tcl_GetString(objPtr);
-    if (objPtr->typePtr != &EncodingType) {
+    const char *name = Tcl_GetString(objPtr);
+    if (objPtr->typePtr != &encodingType) {
 	Tcl_Encoding encoding = Tcl_GetEncoding(interp, name);
 
 	if (encoding == NULL) {
 	    return TCL_ERROR;
 	}
-	if (objPtr->typePtr && objPtr->typePtr->freeIntRepProc) {
-	    objPtr->typePtr->freeIntRepProc(objPtr);
-	}
-	objPtr->internalRep.otherValuePtr = (VOID *) encoding;
-	objPtr->typePtr = &EncodingType;
+	TclFreeIntRep(objPtr);
+	objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) encoding;
+	objPtr->typePtr = &encodingType;
     }
     *encodingPtr = Tcl_GetEncoding(NULL, name);
     return TCL_OK;
@@ -297,15 +324,17 @@ TclGetEncodingFromObj(interp, objPtr, encodingPtr)
  *
  * FreeEncodingIntRep --
  *
- *      The Tcl_FreeInternalRepProc for the "encoding" Tcl_ObjType.
+ *	The Tcl_FreeInternalRepProc for the "encoding" Tcl_ObjType.
  *
  *----------------------------------------------------------------------
  */
+
 static void
-FreeEncodingIntRep(objPtr)
-    Tcl_Obj *objPtr;
+FreeEncodingIntRep(
+    Tcl_Obj *objPtr)
 {
-    Tcl_FreeEncoding((Tcl_Encoding) objPtr->internalRep.otherValuePtr);
+    Tcl_FreeEncoding((Tcl_Encoding) objPtr->internalRep.twoPtrValue.ptr1);
+    objPtr->typePtr = NULL;
 }
 
 /*
@@ -313,26 +342,193 @@ FreeEncodingIntRep(objPtr)
  *
  * DupEncodingIntRep --
  *
- *      The Tcl_DupInternalRepProc for the "encoding" Tcl_ObjType.
+ *	The Tcl_DupInternalRepProc for the "encoding" Tcl_ObjType.
  *
  *----------------------------------------------------------------------
  */
+
 static void
-DupEncodingIntRep(srcPtr, dupPtr)
-    Tcl_Obj *srcPtr;
-    Tcl_Obj *dupPtr;
+DupEncodingIntRep(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *dupPtr)
 {
-    dupPtr->internalRep.otherValuePtr = (VOID *)
+    dupPtr->internalRep.twoPtrValue.ptr1 = (VOID *)
 	    Tcl_GetEncoding(NULL, srcPtr->bytes);
 }
 
 /*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetEncodingSearchPath --
+ *
+ *	Keeps the per-thread copy of the encoding search path current with
+ *	changes to the global copy.
+ *
+ * Results:
+ *	Returns a "list" (Tcl_Obj *) that contains the encoding search path.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_GetEncodingSearchPath(void)
+{
+    return TclGetProcessGlobalValue(&encodingSearchPath);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetEncodingSearchPath --
+ *
+ *	Keeps the per-thread copy of the encoding search path current with
+ *	changes to the global copy.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_SetEncodingSearchPath(
+    Tcl_Obj *searchPath)
+{
+    int dummy;
+
+    if (TCL_ERROR == Tcl_ListObjLength(NULL, searchPath, &dummy)) {
+	return TCL_ERROR;
+    }
+    TclSetProcessGlobalValue(&encodingSearchPath, searchPath, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetLibraryPath --
+ *
+ *	Keeps the per-thread copy of the library path current with changes to
+ *	the global copy.
+ *
+ * Results:
+ *	Returns a "list" (Tcl_Obj *) that contains the library path.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclGetLibraryPath(void)
+{
+    return TclGetProcessGlobalValue(&libraryPath);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetLibraryPath --
+ *
+ *	Keeps the per-thread copy of the library path current with changes to
+ *	the global copy.
+ *
+ *	NOTE: this routine returns void, so there's no way to report the error
+ *	that searchPath is not a valid list. In that case, this routine will
+ *	silently do nothing.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclSetLibraryPath(
+    Tcl_Obj *path)
+{
+    int dummy;
+
+    if (TCL_ERROR == Tcl_ListObjLength(NULL, path, &dummy)) {
+	return;
+    }
+    TclSetProcessGlobalValue(&libraryPath, path, NULL);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * FillEncodingFileMap --
+ *
+ * 	Called to bring the encoding file map in sync with the current value
+ * 	of the encoding search path.
+ *
+ *	Scan the directories on the encoding search path, find the *.enc
+ *	files, and store the found pathnames in a map associated with the
+ *	encoding name.
+ *
+ *	In particular, if $dir is on the encoding search path, and the file
+ *	$dir/foo.enc is found, then store a "foo" -> $dir entry in the map.
+ *	Later, any need for the "foo" encoding will quickly * be able to
+ *	construct the $dir/foo.enc pathname for reading the encoding data.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Entries are added to the encoding file map.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+FillEncodingFileMap(void)
+{
+    int i, numDirs = 0;
+    Tcl_Obj *map, *searchPath;
+
+    searchPath = Tcl_GetEncodingSearchPath();
+    Tcl_IncrRefCount(searchPath);
+    Tcl_ListObjLength(NULL, searchPath, &numDirs);
+    map = Tcl_NewDictObj();
+    Tcl_IncrRefCount(map);
+
+    for (i = numDirs-1; i >= 0; i--) {
+	/*
+	 * Iterate backwards through the search path so as we overwrite
+	 * entries found, we favor files earlier on the search path.
+	 */
+
+	int j, numFiles;
+	Tcl_Obj *directory, *matchFileList = Tcl_NewObj();
+	Tcl_Obj **filev;
+	Tcl_GlobTypeData readableFiles = {
+	    TCL_GLOB_TYPE_FILE, TCL_GLOB_PERM_R, NULL, NULL
+	};
+
+	Tcl_ListObjIndex(NULL, searchPath, i, &directory);
+	Tcl_IncrRefCount(directory);
+	Tcl_IncrRefCount(matchFileList);
+	Tcl_FSMatchInDirectory(NULL, matchFileList, directory, "*.enc",
+		&readableFiles);
+
+	Tcl_ListObjGetElements(NULL, matchFileList, &numFiles, &filev);
+	for (j=0; j<numFiles; j++) {
+	    Tcl_Obj *encodingName, *file;
+
+	    file = TclPathPart(NULL, filev[j], TCL_PATH_TAIL);
+	    encodingName = TclPathPart(NULL, file, TCL_PATH_ROOT);
+	    Tcl_DictObjPut(NULL, map, encodingName, directory);
+	    Tcl_DecrRefCount(file);
+	    Tcl_DecrRefCount(encodingName);
+	}
+	Tcl_DecrRefCount(matchFileList);
+	Tcl_DecrRefCount(directory);
+    }
+    Tcl_DecrRefCount(searchPath);
+    TclSetProcessGlobalValue(&encodingFileMap, map, NULL);
+    Tcl_DecrRefCount(map);
+}
+
+/*
  *---------------------------------------------------------------------------
  *
  * TclInitEncodingSubsystem --
  *
  *	Initialize all resources used by this subsystem on a per-process
- *	basis.  
+ *	basis.
  *
  * Results:
  *	None.
@@ -344,18 +540,22 @@ DupEncodingIntRep(srcPtr, dupPtr)
  */
 
 void
-TclInitEncodingSubsystem()
+TclInitEncodingSubsystem(void)
 {
     Tcl_EncodingType type;
 
+    if (encodingsInitialized) {
+	return;
+    }
+
     Tcl_MutexLock(&encodingMutex);
     Tcl_InitHashTable(&encodingTable, TCL_STRING_KEYS);
     Tcl_MutexUnlock(&encodingMutex);
-    
+
     /*
-     * Create a few initial encodings.  Note that the UTF-8 to UTF-8 
-     * translation is not a no-op, because it will turn a stream of
-     * improperly formed UTF-8 into a properly formed stream.
+     * Create a few initial encodings. Note that the UTF-8 to UTF-8
+     * translation is not a no-op, because it will turn a stream of improperly
+     * formed UTF-8 into a properly formed stream.
      */
 
     type.encodingName	= "identity";
@@ -383,8 +583,53 @@ TclInitEncodingSubsystem()
     type.nullSize	= 2;
     type.clientData	= NULL;
     Tcl_CreateEncoding(&type);
-}
 
+    /*
+     * Need the iso8859-1 encoding in order to process binary data, so force
+     * it to always be embedded. Note that this encoding *must* be a proper
+     * table encoding or some of the escape encodings crash! Hence the ugly
+     * code to duplicate the structure of a table encoding here.
+     */
+
+    {
+	TableEncodingData *dataPtr = (TableEncodingData *)
+		ckalloc(sizeof(TableEncodingData));
+	unsigned size;
+	unsigned short i;
+
+	memset(dataPtr, 0, sizeof(TableEncodingData));
+	dataPtr->fallback = '?';
+
+	size = 256*(sizeof(unsigned short *) + sizeof(unsigned short));
+	dataPtr->toUnicode = (unsigned short **) ckalloc(size);
+	memset(dataPtr->toUnicode, 0, size);
+	dataPtr->fromUnicode = (unsigned short **) ckalloc(size);
+	memset(dataPtr->fromUnicode, 0, size);
+
+	dataPtr->toUnicode[0] = (unsigned short *) (dataPtr->toUnicode + 256);
+	dataPtr->fromUnicode[0] = (unsigned short *)
+		(dataPtr->fromUnicode + 256);
+	for (i=1 ; i<256 ; i++) {
+	    dataPtr->toUnicode[i] = emptyPage;
+	    dataPtr->fromUnicode[i] = emptyPage;
+	}
+
+	for (i=0 ; i<256 ; i++) {
+	    dataPtr->toUnicode[0][i] = i;
+	    dataPtr->fromUnicode[0][i] = i;
+	}
+
+	type.encodingName	= "iso8859-1";
+	type.toUtfProc		= Iso88591ToUtfProc;
+	type.fromUtfProc	= Iso88591FromUtfProc;
+	type.freeProc		= TableFreeProc;
+	type.nullSize		= 1;
+	type.clientData		= dataPtr;
+	Tcl_CreateEncoding(&type);
+    }
+
+    encodingsInitialized = 1;
+}
 
 /*
  *----------------------------------------------------------------------
@@ -403,25 +648,28 @@ TclInitEncodingSubsystem()
  */
 
 void
-TclFinalizeEncodingSubsystem()
+TclFinalizeEncodingSubsystem(void)
 {
     Tcl_HashSearch search;
     Tcl_HashEntry *hPtr;
 
     Tcl_MutexLock(&encodingMutex);
-    encodingsInitialized  = 0;
+    encodingsInitialized = 0;
     FreeEncoding(systemEncoding);
+
     hPtr = Tcl_FirstHashEntry(&encodingTable, &search);
     while (hPtr != NULL) {
 	/*
 	 * Call FreeEncoding instead of doing it directly to handle refcounts
-	 * like escape encodings use.  [Bug #524674]
-	 * Make sure to call Tcl_FirstHashEntry repeatedly so that all
-	 * encodings are eventually cleaned up.
+	 * like escape encodings use. [Bug 524674] Make sure to call
+	 * Tcl_FirstHashEntry repeatedly so that all encodings are eventually
+	 * cleaned up.
 	 */
+
 	FreeEncoding((Tcl_Encoding) Tcl_GetHashValue(hPtr));
 	hPtr = Tcl_FirstHashEntry(&encodingTable, &search);
     }
+
     Tcl_DeleteHashTable(&encodingTable);
     Tcl_MutexUnlock(&encodingMutex);
 }
@@ -431,18 +679,32 @@ TclFinalizeEncodingSubsystem()
  *
  * Tcl_GetDefaultEncodingDir --
  *
+ * 	Legacy public interface to retrieve first directory in the encoding
+ * 	searchPath.
  *
  * Results:
+ *	The directory pathname, as a string, or NULL for an empty encoding
+ *	search path.
  *
  * Side effects:
+ * 	None.
  *
  *-------------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_GetDefaultEncodingDir()
+const char *
+Tcl_GetDefaultEncodingDir(void)
 {
-    return tclDefaultEncodingDir;
+    int numDirs;
+    Tcl_Obj *first, *searchPath = Tcl_GetEncodingSearchPath();
+
+    Tcl_ListObjLength(NULL, searchPath, &numDirs);
+    if (numDirs == 0) {
+	return NULL;
+    }
+    Tcl_ListObjIndex(NULL, searchPath, 0, &first);
+
+    return Tcl_GetString(first);
 }
 
 /*
@@ -450,20 +712,28 @@ Tcl_GetDefaultEncodingDir()
  *
  * Tcl_SetDefaultEncodingDir --
  *
+ * 	Legacy public interface to set the first directory in the encoding
+ * 	search path.
  *
  * Results:
+ * 	None.
  *
  * Side effects:
+ * 	Modifies the encoding search path.
  *
  *-------------------------------------------------------------------------
  */
 
 void
-Tcl_SetDefaultEncodingDir(path)
-    CONST char *path;
+Tcl_SetDefaultEncodingDir(
+    const char *path)
 {
-    tclDefaultEncodingDir = (char *)ckalloc((unsigned) strlen(path) + 1);
-    strcpy(tclDefaultEncodingDir, path);
+    Tcl_Obj *searchPath = Tcl_GetEncodingSearchPath();
+    Tcl_Obj *directory = Tcl_NewStringObj(path, -1);
+
+    searchPath = Tcl_DuplicateObj(searchPath);
+    Tcl_ListObjReplace(NULL, searchPath, 0, 0, 1, &directory);
+    Tcl_SetEncodingSearchPath(searchPath);
 }
 
 /*
@@ -472,29 +742,29 @@ Tcl_SetDefaultEncodingDir(path)
  * Tcl_GetEncoding --
  *
  *	Given the name of a encoding, find the corresponding Tcl_Encoding
- *	token.  If the encoding did not already exist, Tcl attempts to
+ *	token. If the encoding did not already exist, Tcl attempts to
  *	dynamically load an encoding by that name.
  *
  * Results:
- *	Returns a token that represents the encoding.  If the name didn't
- *	refer to any known or loadable encoding, NULL is returned.  If
- *	NULL was returned, an error message is left in interp's result
- *	object, unless interp was NULL.
+ *	Returns a token that represents the encoding. If the name didn't refer
+ *	to any known or loadable encoding, NULL is returned. If NULL was
+ *	returned, an error message is left in interp's result object, unless
+ *	interp was NULL.
  *
  * Side effects:
  *	The new encoding type is entered into a table visible to all
- *	interpreters, keyed off the encoding's name.  For each call to
- *	this procedure, there should eventually be a call to
- *	Tcl_FreeEncoding, so that the database can be cleaned up when
- *	encodings aren't needed anymore.
+ *	interpreters, keyed off the encoding's name. For each call to this
+ *	function, there should eventually be a call to Tcl_FreeEncoding, so
+ *	that the database can be cleaned up when encodings aren't needed
+ *	anymore.
  *
  *-------------------------------------------------------------------------
  */
 
 Tcl_Encoding
-Tcl_GetEncoding(interp, name)
-    Tcl_Interp *interp;		/* Interp for error reporting, if not NULL. */
-    CONST char *name;		/* The name of the desired encoding. */
+Tcl_GetEncoding(
+    Tcl_Interp *interp,		/* Interp for error reporting, if not NULL. */
+    const char *name)		/* The name of the desired encoding. */
 {
     Tcl_HashEntry *hPtr;
     Encoding *encodingPtr;
@@ -515,6 +785,7 @@ Tcl_GetEncoding(interp, name)
 	return (Tcl_Encoding) encodingPtr;
     }
     Tcl_MutexUnlock(&encodingMutex);
+
     return LoadEncodingFile(interp, name);
 }
 
@@ -523,22 +794,22 @@ Tcl_GetEncoding(interp, name)
  *
  * Tcl_FreeEncoding --
  *
- *	This procedure is called to release an encoding allocated by
+ *	This function is called to release an encoding allocated by
  *	Tcl_CreateEncoding() or Tcl_GetEncoding().
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The reference count associated with the encoding is decremented
- *	and the encoding may be deleted if nothing is using it anymore.
+ *	The reference count associated with the encoding is decremented and
+ *	the encoding may be deleted if nothing is using it anymore.
  *
  *---------------------------------------------------------------------------
  */
 
 void
-Tcl_FreeEncoding(encoding)
-    Tcl_Encoding encoding;
+Tcl_FreeEncoding(
+    Tcl_Encoding encoding)
 {
     Tcl_MutexLock(&encodingMutex);
     FreeEncoding(encoding);
@@ -550,25 +821,25 @@ Tcl_FreeEncoding(encoding)
  *
  * FreeEncoding --
  *
- *	This procedure is called to release an encoding by procedures
- *	that already have the encodingMutex.
+ *	This function is called to release an encoding by functions that
+ *	already have the encodingMutex.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The reference count associated with the encoding is decremented
- *	and the encoding may be deleted if nothing is using it anymore.
+ *	The reference count associated with the encoding is decremented and
+ *	the encoding may be deleted if nothing is using it anymore.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeEncoding(encoding)
-    Tcl_Encoding encoding;
+FreeEncoding(
+    Tcl_Encoding encoding)
 {
     Encoding *encodingPtr;
-    
+
     encodingPtr = (Encoding *) encoding;
     if (encodingPtr == NULL) {
 	return;
@@ -594,8 +865,8 @@ FreeEncoding(encoding)
  *
  * Tcl_GetEncodingName --
  *
- *	Given an encoding, return the name that was used to constuct
- *	the encoding.
+ *	Given an encoding, return the name that was used to constuct the
+ *	encoding.
  *
  * Results:
  *	The name of the encoding.
@@ -606,17 +877,15 @@ FreeEncoding(encoding)
  *---------------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_GetEncodingName(encoding)
-    Tcl_Encoding encoding;	/* The encoding whose name to fetch. */
+const char *
+Tcl_GetEncodingName(
+    Tcl_Encoding encoding)	/* The encoding whose name to fetch. */
 {
-    Encoding *encodingPtr;
-
     if (encoding == NULL) {
 	encoding = systemEncoding;
     }
-    encodingPtr = (Encoding *) encoding;
-    return encodingPtr->name;
+
+    return ((Encoding *) encoding)->name;
 }
 
 /*
@@ -624,8 +893,8 @@ Tcl_GetEncodingName(encoding)
  *
  * Tcl_GetEncodingNames --
  *
- *	Get the list of all known encodings, including the ones stored
- *	as files on disk in the encoding path.
+ *	Get the list of all known encodings, including the ones stored as
+ *	files on disk in the encoding path.
  *
  * Results:
  *	Modifies interp's result object to hold a list of all the available
@@ -638,102 +907,53 @@ Tcl_GetEncodingName(encoding)
  */
 
 void
-Tcl_GetEncodingNames(interp)
-    Tcl_Interp *interp;		/* Interp to hold result. */
+Tcl_GetEncodingNames(
+    Tcl_Interp *interp)		/* Interp to hold result. */
 {
+    Tcl_HashTable table;
     Tcl_HashSearch search;
     Tcl_HashEntry *hPtr;
-    Tcl_Obj *pathPtr, *resultPtr;
-    int dummy;
+    Tcl_Obj *map, *name, *result = Tcl_NewObj();
+    Tcl_DictSearch mapSearch;
+    int dummy, done = 0;
 
-    Tcl_HashTable table;
+    Tcl_InitObjHashTable(&table);
+
+    /*
+     * Copy encoding names from loaded encoding table to table.
+     */
 
     Tcl_MutexLock(&encodingMutex);
-    Tcl_InitHashTable(&table, TCL_STRING_KEYS);
-    hPtr = Tcl_FirstHashEntry(&encodingTable, &search);
-    while (hPtr != NULL) {
-	Encoding *encodingPtr;
-	
-	encodingPtr = (Encoding *) Tcl_GetHashValue(hPtr);
-	Tcl_CreateHashEntry(&table, encodingPtr->name, &dummy);
-	hPtr = Tcl_NextHashEntry(&search);
+    for (hPtr = Tcl_FirstHashEntry(&encodingTable, &search); hPtr != NULL;
+	    hPtr = Tcl_NextHashEntry(&search)) {
+	Encoding *encodingPtr = (Encoding *) Tcl_GetHashValue(hPtr);
+	Tcl_CreateHashEntry(&table,
+		(char *) Tcl_NewStringObj(encodingPtr->name, -1), &dummy);
     }
     Tcl_MutexUnlock(&encodingMutex);
 
-    pathPtr = TclGetLibraryPath();
-    if (pathPtr != NULL) {
-	int i, objc;
-	Tcl_Obj **objv;
-	char globArgString[10];
-	Tcl_Obj* encodingObj = Tcl_NewStringObj("encoding",-1);
-	Tcl_IncrRefCount(encodingObj);
-	
-	objc = 0;
-	Tcl_ListObjGetElements(NULL, pathPtr, &objc, &objv);
-
-	for (i = 0; i < objc; i++) {
-	    Tcl_Obj *searchIn;
-	    
-	    /* 
-	     * Construct the path from the element of pathPtr,
-	     * joined with 'encoding'.
-	     */
-	    searchIn = Tcl_FSJoinToPath(objv[i],1,&encodingObj);
-	    Tcl_IncrRefCount(searchIn);
-	    Tcl_ResetResult(interp);
+    FillEncodingFileMap();
+    map = TclGetProcessGlobalValue(&encodingFileMap);
 
-	    /*
-	     * TclGlob() changes the contents of globArgString, which causes
-	     * a segfault if we pass in a pointer to non-writeable memory.
-	     * TclGlob() puts its results directly into interp.
-	     */
+    /*
+     * Copy encoding names from encoding file map to table.
+     */
 
-	    strcpy(globArgString, "*.enc");
-	    /* 
-	     * The GLOBMODE_TAILS flag returns just the tail of each file
-	     * which is the encoding name with a .enc extension 
-	     */
-	    if ((TclGlob(interp, globArgString, searchIn, 
-			 TCL_GLOBMODE_TAILS, NULL) == TCL_OK)) {
-		int objc2 = 0;
-		Tcl_Obj **objv2;
-		int j;
-
-		Tcl_ListObjGetElements(NULL, Tcl_GetObjResult(interp), &objc2,
-			&objv2);
-
-		for (j = 0; j < objc2; j++) {
-		    int length;
-		    char *string;
-		    string = Tcl_GetStringFromObj(objv2[j], &length);
-		    length -= 4;
-		    if (length > 0) {
-			string[length] = '\0';
-			Tcl_CreateHashEntry(&table, string, &dummy);
-			string[length] = '.';
-		    }
-		}
-	    }
-	    Tcl_DecrRefCount(searchIn);
-	}
-	Tcl_DecrRefCount(encodingObj);
+    Tcl_DictObjFirst(NULL, map, &mapSearch, &name, NULL, &done);
+    for (; !done; Tcl_DictObjNext(&mapSearch, &name, NULL, &done)) {
+	Tcl_CreateHashEntry(&table, (char *) name, &dummy);
     }
 
     /*
-     * Clear any values placed in the result by globbing.
+     * Pull all encoding names from table into the result list.
      */
 
-    Tcl_ResetResult(interp);
-    resultPtr = Tcl_GetObjResult(interp);
-
-    hPtr = Tcl_FirstHashEntry(&table, &search);
-    while (hPtr != NULL) {
-	Tcl_Obj *strPtr;
-
-	strPtr = Tcl_NewStringObj(Tcl_GetHashKey(&table, hPtr), -1);
-	Tcl_ListObjAppendElement(NULL, resultPtr, strPtr);
-	hPtr = Tcl_NextHashEntry(&search);
+    for (hPtr = Tcl_FirstHashEntry(&table, &search); hPtr != NULL;
+	    hPtr = Tcl_NextHashEntry(&search)) {
+	Tcl_ListObjAppendElement(NULL, result,
+		(Tcl_Obj *) Tcl_GetHashKey(&table, hPtr));
     }
+    Tcl_SetObjResult(interp, result);
     Tcl_DeleteHashTable(&table);
 }
 
@@ -742,29 +962,29 @@ Tcl_GetEncodingNames(interp)
  *
  * Tcl_SetSystemEncoding --
  *
- *	Sets the default encoding that should be used whenever the user
- *	passes a NULL value in to one of the conversion routines.
- *	If the supplied name is NULL, the system encoding is reset to the
- *	default system encoding.
+ *	Sets the default encoding that should be used whenever the user passes
+ *	a NULL value in to one of the conversion routines. If the supplied
+ *	name is NULL, the system encoding is reset to the default system
+ *	encoding.
  *
  * Results:
- *	The return value is TCL_OK if the system encoding was successfully
- *	set to the encoding specified by name, TCL_ERROR otherwise.  If
- *	TCL_ERROR is returned, an error message is left in interp's result
- *	object, unless interp was NULL.
+ *	The return value is TCL_OK if the system encoding was successfully set
+ *	to the encoding specified by name, TCL_ERROR otherwise. If TCL_ERROR
+ *	is returned, an error message is left in interp's result object,
+ *	unless interp was NULL.
  *
  * Side effects:
- *	The reference count of the new system encoding is incremented.
- *	The reference count of the old system encoding is decremented and 
- *	it may be freed.  
+ *	The reference count of the new system encoding is incremented. The
+ *	reference count of the old system encoding is decremented and it may
+ *	be freed.
  *
  *------------------------------------------------------------------------
  */
 
 int
-Tcl_SetSystemEncoding(interp, name)
-    Tcl_Interp *interp;		/* Interp for error reporting, if not NULL. */
-    CONST char *name;		/* The name of the desired encoding, or NULL/""
+Tcl_SetSystemEncoding(
+    Tcl_Interp *interp,		/* Interp for error reporting, if not NULL. */
+    const char *name)		/* The name of the desired encoding, or NULL/""
 				 * to reset to default encoding. */
 {
     Tcl_Encoding encoding;
@@ -796,50 +1016,51 @@ Tcl_SetSystemEncoding(interp, name)
  *
  * Tcl_CreateEncoding --
  *
- *	This procedure is called to define a new encoding and the procedures
- *	that are used to convert between the specified encoding and Unicode.  
+ *	This function is called to define a new encoding and the functions
+ *	that are used to convert between the specified encoding and Unicode.
  *
  * Results:
- *	Returns a token that represents the encoding.  If an encoding with
- *	the same name already existed, the old encoding token remains
- *	valid and continues to behave as it used to, and will eventually
- *	be garbage collected when the last reference to it goes away.  Any
- *	subsequent calls to Tcl_GetEncoding with the specified name will
- *	retrieve the most recent encoding token.
+ *	Returns a token that represents the encoding. If an encoding with the
+ *	same name already existed, the old encoding token remains valid and
+ *	continues to behave as it used to, and will eventually be garbage
+ *	collected when the last reference to it goes away. Any subsequent
+ *	calls to Tcl_GetEncoding with the specified name will retrieve the
+ *	most recent encoding token.
  *
  * Side effects:
  *	The new encoding type is entered into a table visible to all
- *	interpreters, keyed off the encoding's name.  For each call to
- *	this procedure, there should eventually be a call to
- *	Tcl_FreeEncoding, so that the database can be cleaned up when
- *	encodings aren't needed anymore.
+ *	interpreters, keyed off the encoding's name. For each call to this
+ *	function, there should eventually be a call to Tcl_FreeEncoding, so
+ *	that the database can be cleaned up when encodings aren't needed
+ *	anymore.
  *
  *---------------------------------------------------------------------------
- */ 
+ */
 
 Tcl_Encoding
-Tcl_CreateEncoding(typePtr)
-    Tcl_EncodingType *typePtr;	/* The encoding type. */
+Tcl_CreateEncoding(
+    const Tcl_EncodingType *typePtr)
+				/* The encoding type. */
 {
     Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
     Encoding *encodingPtr;
     char *name;
 
     Tcl_MutexLock(&encodingMutex);
-    hPtr = Tcl_CreateHashEntry(&encodingTable, typePtr->encodingName, &new);
-    if (new == 0) {
+    hPtr = Tcl_CreateHashEntry(&encodingTable, typePtr->encodingName, &isNew);
+    if (isNew == 0) {
 	/*
-	 * Remove old encoding from hash table, but don't delete it until
-	 * last reference goes away.
+	 * Remove old encoding from hash table, but don't delete it until last
+	 * reference goes away.
 	 */
-	 
+
 	encodingPtr = (Encoding *) Tcl_GetHashValue(hPtr);
 	encodingPtr->hPtr = NULL;
     }
 
     name = ckalloc((unsigned) strlen(typePtr->encodingName) + 1);
-    
+
     encodingPtr = (Encoding *) ckalloc(sizeof(Encoding));
     encodingPtr->name		= strcpy(name, typePtr->encodingName);
     encodingPtr->toUtfProc	= typePtr->toUtfProc;
@@ -866,15 +1087,15 @@ Tcl_CreateEncoding(typePtr)
  *
  * Tcl_ExternalToUtfDString --
  *
- *	Convert a source buffer from the specified encoding into UTF-8.
- *	If any of the bytes in the source buffer are invalid or cannot
- *	be represented in the target encoding, a default fallback
- *	character will be substituted.
+ *	Convert a source buffer from the specified encoding into UTF-8. If any
+ *	of the bytes in the source buffer are invalid or cannot be represented
+ *	in the target encoding, a default fallback character will be
+ *	substituted.
  *
  * Results:
  *	The converted bytes are stored in the DString, which is then NULL
- *	terminated.  The return value is a pointer to the value stored 
- *	in the DString.
+ *	terminated. The return value is a pointer to the value stored in the
+ *	DString.
  *
  * Side effects:
  *	None.
@@ -882,15 +1103,15 @@ Tcl_CreateEncoding(typePtr)
  *-------------------------------------------------------------------------
  */
 
-char * 
-Tcl_ExternalToUtfDString(encoding, src, srcLen, dstPtr)
-    Tcl_Encoding encoding;	/* The encoding for the source string, or
-				 * NULL for the default system encoding. */
-    CONST char *src;		/* Source string in specified encoding. */
-    int srcLen;			/* Source string length in bytes, or < 0 for
+char *
+Tcl_ExternalToUtfDString(
+    Tcl_Encoding encoding,	/* The encoding for the source string, or NULL
+				 * for the default system encoding. */
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes, or < 0 for
 				 * encoding-specific string length. */
-    Tcl_DString *dstPtr;	/* Uninitialized or free DString in which 
-				 * the converted string is stored. */
+    Tcl_DString *dstPtr)	/* Uninitialized or free DString in which the
+				 * converted string is stored. */
 {
     char *dst;
     Tcl_EncodingState state;
@@ -900,7 +1121,7 @@ Tcl_ExternalToUtfDString(encoding, src, srcLen, dstPtr)
     Tcl_DStringInit(dstPtr);
     dst = Tcl_DStringValue(dstPtr);
     dstLen = dstPtr->spaceAvl - 1;
-    
+
     if (encoding == NULL) {
 	encoding = systemEncoding;
     }
@@ -911,16 +1132,20 @@ Tcl_ExternalToUtfDString(encoding, src, srcLen, dstPtr)
     } else if (srcLen < 0) {
 	srcLen = (*encodingPtr->lengthProc)(src);
     }
+
     flags = TCL_ENCODING_START | TCL_ENCODING_END;
+
     while (1) {
 	result = (*encodingPtr->toUtfProc)(encodingPtr->clientData, src,
 		srcLen, flags, &state, dst, dstLen, &srcRead, &dstWrote,
 		&dstChars);
 	soFar = dst + dstWrote - Tcl_DStringValue(dstPtr);
+
 	if (result != TCL_CONVERT_NOSPACE) {
 	    Tcl_DStringSetLength(dstPtr, soFar);
 	    return Tcl_DStringValue(dstPtr);
 	}
+
 	flags &= ~TCL_ENCODING_START;
 	src += srcRead;
 	srcLen -= srcRead;
@@ -942,50 +1167,49 @@ Tcl_ExternalToUtfDString(encoding, src, srcLen, dstPtr)
  *
  * Results:
  *	The return value is one of TCL_OK, TCL_CONVERT_MULTIBYTE,
- *	TCL_CONVERT_SYNTAX, TCL_CONVERT_UNKNOWN, or TCL_CONVERT_NOSPACE,
- *	as documented in tcl.h.
+ *	TCL_CONVERT_SYNTAX, TCL_CONVERT_UNKNOWN, or TCL_CONVERT_NOSPACE, as
+ *	documented in tcl.h.
  *
  * Side effects:
- *	The converted bytes are stored in the output buffer.  
+ *	The converted bytes are stored in the output buffer.
  *
  *-------------------------------------------------------------------------
  */
 
 int
-Tcl_ExternalToUtf(interp, encoding, src, srcLen, flags, statePtr, dst,
-	dstLen, srcReadPtr, dstWrotePtr, dstCharsPtr)
-    Tcl_Interp *interp;		/* Interp for error return, if not NULL. */
-    Tcl_Encoding encoding;	/* The encoding for the source string, or
-				 * NULL for the default system encoding. */
-    CONST char *src;		/* Source string in specified encoding. */
-    int srcLen;			/* Source string length in bytes, or < 0 for
+Tcl_ExternalToUtf(
+    Tcl_Interp *interp,		/* Interp for error return, if not NULL. */
+    Tcl_Encoding encoding,	/* The encoding for the source string, or NULL
+				 * for the default system encoding. */
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes, or < 0 for
 				 * encoding-specific string length. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
     Encoding *encodingPtr;
     int result, srcRead, dstWrote, dstChars;
     Tcl_EncodingState state;
-    
+
     if (encoding == NULL) {
 	encoding = systemEncoding;
     }
@@ -1012,8 +1236,8 @@ Tcl_ExternalToUtf(interp, encoding, src, srcLen, flags, statePtr, dst,
 
     /*
      * If there are any null characters in the middle of the buffer, they will
-     * converted to the UTF-8 null character (\xC080).  To get the actual 
-     * \0 at the end of the destination buffer, we need to append it manually.
+     * converted to the UTF-8 null character (\xC080). To get the actual \0 at
+     * the end of the destination buffer, we need to append it manually.
      */
 
     dstLen--;
@@ -1021,6 +1245,7 @@ Tcl_ExternalToUtf(interp, encoding, src, srcLen, flags, statePtr, dst,
 	    flags, statePtr, dst, dstLen, srcReadPtr, dstWrotePtr,
 	    dstCharsPtr);
     dst[*dstWrotePtr] = '\0';
+
     return result;
 }
 
@@ -1029,15 +1254,15 @@ Tcl_ExternalToUtf(interp, encoding, src, srcLen, flags, statePtr, dst,
  *
  * Tcl_UtfToExternalDString --
  *
- *	Convert a source buffer from UTF-8 into the specified encoding.
- *	If any of the bytes in the source buffer are invalid or cannot
- *	be represented in the target encoding, a default fallback
- *	character will be substituted.
+ *	Convert a source buffer from UTF-8 into the specified encoding. If any
+ *	of the bytes in the source buffer are invalid or cannot be represented
+ *	in the target encoding, a default fallback character will be
+ *	substituted.
  *
  * Results:
- *	The converted bytes are stored in the DString, which is then
- *	NULL terminated in an encoding-specific manner.  The return value 
- *	is a pointer to the value stored in the DString.
+ *	The converted bytes are stored in the DString, which is then NULL
+ *	terminated in an encoding-specific manner. The return value is a
+ *	pointer to the value stored in the DString.
  *
  * Side effects:
  *	None.
@@ -1046,20 +1271,20 @@ Tcl_ExternalToUtf(interp, encoding, src, srcLen, flags, statePtr, dst,
  */
 
 char *
-Tcl_UtfToExternalDString(encoding, src, srcLen, dstPtr)
-    Tcl_Encoding encoding;	/* The encoding for the converted string,
-				 * or NULL for the default system encoding. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes, or < 0 for
+Tcl_UtfToExternalDString(
+    Tcl_Encoding encoding,	/* The encoding for the converted string, or
+				 * NULL for the default system encoding. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes, or < 0 for
 				 * strlen(). */
-    Tcl_DString *dstPtr;	/* Uninitialized or free DString in which 
-				 * the converted string is stored. */
+    Tcl_DString *dstPtr)	/* Uninitialized or free DString in which the
+				 * converted string is stored. */
 {
     char *dst;
     Tcl_EncodingState state;
     Encoding *encodingPtr;
     int flags, dstLen, result, soFar, srcRead, dstWrote, dstChars;
-    
+
     Tcl_DStringInit(dstPtr);
     dst = Tcl_DStringValue(dstPtr);
     dstLen = dstPtr->spaceAvl - 1;
@@ -1080,13 +1305,15 @@ Tcl_UtfToExternalDString(encoding, src, srcLen, dstPtr)
 		srcLen, flags, &state, dst, dstLen, &srcRead, &dstWrote,
 		&dstChars);
 	soFar = dst + dstWrote - Tcl_DStringValue(dstPtr);
+
 	if (result != TCL_CONVERT_NOSPACE) {
 	    if (encodingPtr->nullSize == 2) {
-	        Tcl_DStringSetLength(dstPtr, soFar + 1);
+		Tcl_DStringSetLength(dstPtr, soFar + 1);
 	    }
 	    Tcl_DStringSetLength(dstPtr, soFar);
 	    return Tcl_DStringValue(dstPtr);
 	}
+
 	flags &= ~TCL_ENCODING_START;
 	src += srcRead;
 	srcLen -= srcRead;
@@ -1108,50 +1335,49 @@ Tcl_UtfToExternalDString(encoding, src, srcLen, dstPtr)
  *
  * Results:
  *	The return value is one of TCL_OK, TCL_CONVERT_MULTIBYTE,
- *	TCL_CONVERT_SYNTAX, TCL_CONVERT_UNKNOWN, or TCL_CONVERT_NOSPACE,
- *	as documented in tcl.h.
+ *	TCL_CONVERT_SYNTAX, TCL_CONVERT_UNKNOWN, or TCL_CONVERT_NOSPACE, as
+ *	documented in tcl.h.
  *
  * Side effects:
- *	The converted bytes are stored in the output buffer.  
+ *	The converted bytes are stored in the output buffer.
  *
  *-------------------------------------------------------------------------
  */
 
 int
-Tcl_UtfToExternal(interp, encoding, src, srcLen, flags, statePtr, dst,
-	dstLen, srcReadPtr, dstWrotePtr, dstCharsPtr)
-    Tcl_Interp *interp;		/* Interp for error return, if not NULL. */
-    Tcl_Encoding encoding;	/* The encoding for the converted string,
-				 * or NULL for the default system encoding. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes, or < 0 for
+Tcl_UtfToExternal(
+    Tcl_Interp *interp,		/* Interp for error return, if not NULL. */
+    Tcl_Encoding encoding,	/* The encoding for the converted string, or
+				 * NULL for the default system encoding. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes, or < 0 for
 				 * strlen(). */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
+    char *dst,			/* Output buffer in which converted string
 				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
     Encoding *encodingPtr;
     int result, srcRead, dstWrote, dstChars;
     Tcl_EncodingState state;
-    
+
     if (encoding == NULL) {
 	encoding = systemEncoding;
     }
@@ -1184,7 +1410,7 @@ Tcl_UtfToExternal(interp, encoding, src, srcLen, flags, statePtr, dst,
 	dst[*dstWrotePtr + 1] = '\0';
     }
     dst[*dstWrotePtr] = '\0';
-    
+
     return result;
 }
 
@@ -1193,78 +1419,142 @@ Tcl_UtfToExternal(interp, encoding, src, srcLen, flags, statePtr, dst,
  *
  * Tcl_FindExecutable --
  *
- *	This procedure computes the absolute path name of the current
+ *	This function computes the absolute path name of the current
  *	application, given its argv[0] value.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The variable tclExecutableName gets filled in with the file
- *	name for the application, if we figured it out.  If we couldn't
- *	figure it out, tclExecutableName is set to NULL.
+ *	The absolute pathname for the application is computed and stored to be
+ *	returned later be [info nameofexecutable].
  *
  *---------------------------------------------------------------------------
  */
 
 void
-Tcl_FindExecutable(argv0)
-    CONST char *argv0;		/* The value of the application's argv[0]
+Tcl_FindExecutable(
+    const char *argv0)		/* The value of the application's argv[0]
 				 * (native). */
 {
-    int mustCleanUtf;
-    CONST char *name;
-    Tcl_DString buffer, nameString;
+    TclInitSubsystems();
+    TclpSetInitialEncodings();
+    TclpFindExecutable(argv0);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * OpenEncodingFileChannel --
+ *
+ *	Open the file believed to hold data for the encoding, "name".
+ *
+ * Results:
+ * 	Returns the readable Tcl_Channel from opening the file, or NULL if the
+ * 	file could not be successfully opened. If NULL was returned, an error
+ * 	message is left in interp's result object, unless interp was NULL.
+ *
+ * Side effects:
+ *	Channel may be opened. Information about the filesystem may be cached
+ *	to speed later calls.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static Tcl_Channel
+OpenEncodingFileChannel(
+    Tcl_Interp *interp,		/* Interp for error reporting, if not NULL. */
+    const char *name)		/* The name of the encoding file on disk and
+				 * also the name for new encoding. */
+{
+    Tcl_Obj *nameObj = Tcl_NewStringObj(name, -1);
+    Tcl_Obj *fileNameObj = Tcl_DuplicateObj(nameObj);
+    Tcl_Obj *searchPath = Tcl_DuplicateObj(Tcl_GetEncodingSearchPath());
+    Tcl_Obj *map = TclGetProcessGlobalValue(&encodingFileMap);
+    Tcl_Obj **dir, *path, *directory = NULL;
+    Tcl_Channel chan = NULL;
+    int i, numDirs;
+
+    Tcl_ListObjGetElements(NULL, searchPath, &numDirs, &dir);
+    Tcl_IncrRefCount(nameObj);
+    Tcl_AppendToObj(fileNameObj, ".enc", -1);
+    Tcl_IncrRefCount(fileNameObj);
+    Tcl_DictObjGet(NULL, map, nameObj, &directory);
 
-    TclInitSubsystems(argv0);
+    /*
+     * Check that any cached directory is still on the encoding search path.
+     */
 
-    if (argv0 == NULL) {
-	goto done;
-    }
-    if (tclExecutableName != NULL) {
-	ckfree(tclExecutableName);
-	tclExecutableName = NULL;
+    if (NULL != directory) {
+	int verified = 0;
+
+	for (i=0; i<numDirs && !verified; i++) {
+	    if (dir[i] == directory) {
+		verified = 1;
+	    }
+	}
+	if (!verified) {
+	    const char *dirString = Tcl_GetString(directory);
+	    for (i=0; i<numDirs && !verified; i++) {
+		if (strcmp(dirString, Tcl_GetString(dir[i])) == 0) {
+		    verified = 1;
+		}
+	    }
+	}
+	if (!verified) {
+	    /*
+	     * Directory no longer on the search path. Remove from cache.
+	     */
+
+	    map = Tcl_DuplicateObj(map);
+	    Tcl_DictObjRemove(NULL, map, nameObj);
+	    TclSetProcessGlobalValue(&encodingFileMap, map, NULL);
+	    directory = NULL;
+	}
     }
-    if ((name = TclpFindExecutable(argv0)) == NULL) {
-	goto done;
+
+    if (NULL != directory) {
+	/*
+	 * Got a directory from the cache. Try to use it first.
+	 */
+
+	Tcl_IncrRefCount(directory);
+	path = Tcl_FSJoinToPath(directory, 1, &fileNameObj);
+	Tcl_IncrRefCount(path);
+	Tcl_DecrRefCount(directory);
+	chan = Tcl_FSOpenFileChannel(NULL, path, "r", 0);
+	Tcl_DecrRefCount(path);
     }
 
     /*
-     * The value returned from TclpNameOfExecutable is a UTF string that
-     * is possibly dirty depending on when it was initialized.
-     * TclFindEncodings will indicate whether we must "clean" the UTF (as
-     * reported by the underlying system).  To assure that the UTF string
-     * is a properly encoded native string for this system, convert the
-     * UTF string to the default native encoding before the default
-     * encoding is initialized.  Then, convert it back to UTF after the
-     * system encoding is loaded.
+     * Scan the search path until we find it.
      */
-    
-    Tcl_UtfToExternalDString(NULL, name, -1, &buffer);
-    mustCleanUtf = TclFindEncodings(argv0);
 
-    /*
-     * Now it is OK to convert the native string back to UTF and set
-     * the value of the tclExecutableName.
-     */
-    
-    if (mustCleanUtf) {
-	Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&buffer), -1,
-		&nameString);
-	tclExecutableName = (char *)
-	    ckalloc((unsigned) (Tcl_DStringLength(&nameString) + 1));
-	strcpy(tclExecutableName, Tcl_DStringValue(&nameString));
-
-	Tcl_DStringFree(&nameString);
-    } else {
-	tclExecutableName = (char *) ckalloc((unsigned) (strlen(name) + 1));
-	strcpy(tclExecutableName, name);
-    }
-    Tcl_DStringFree(&buffer);
-    return;
-	
-    done:
-    (void) TclFindEncodings(argv0);
+    for (i=0; i<numDirs && (chan == NULL); i++) {
+	path = Tcl_FSJoinToPath(dir[i], 1, &fileNameObj);
+	Tcl_IncrRefCount(path);
+	chan = Tcl_FSOpenFileChannel(NULL, path, "r", 0);
+	Tcl_DecrRefCount(path);
+	if (chan != NULL) {
+	    /*
+	     * Save directory in the cache.
+	     */
+
+	    map = Tcl_DuplicateObj(TclGetProcessGlobalValue(&encodingFileMap));
+	    Tcl_DictObjPut(NULL, map, nameObj, dir[i]);
+	    TclSetProcessGlobalValue(&encodingFileMap, map, NULL);
+	}
+    }
+
+    if ((NULL == chan) && (interp != NULL)) {
+	Tcl_AppendResult(interp, "unknown encoding \"", name, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ENCODING", name, NULL);
+    }
+    Tcl_DecrRefCount(fileNameObj);
+    Tcl_DecrRefCount(nameObj);
+    Tcl_DecrRefCount(searchPath);
+
+    return chan;
 }
 
 /*
@@ -1272,50 +1562,34 @@ Tcl_FindExecutable(argv0)
  *
  * LoadEncodingFile --
  *
- *	Read a file that describes an encoding and create a new Encoding
- *	from the data.  
+ *	Read a file that describes an encoding and create a new Encoding from
+ *	the data.
  *
  * Results:
- *	The return value is the newly loaded Encoding, or NULL if
- *	the file didn't exist of was in the incorrect format.  If NULL was
- *	returned, an error message is left in interp's result object,
- *	unless interp was NULL.
+ *	The return value is the newly loaded Encoding, or NULL if the file
+ *	didn't exist of was in the incorrect format. If NULL was returned, an
+ *	error message is left in interp's result object, unless interp was
+ *	NULL.
  *
  * Side effects:
- *	File read from disk.  
+ *	File read from disk.
  *
  *---------------------------------------------------------------------------
  */
 
 static Tcl_Encoding
-LoadEncodingFile(interp, name)
-    Tcl_Interp *interp;		/* Interp for error reporting, if not NULL. */
-    CONST char *name;		/* The name of the encoding file on disk
-				 * and also the name for new encoding. */
+LoadEncodingFile(
+    Tcl_Interp *interp,		/* Interp for error reporting, if not NULL. */
+    const char *name)		/* The name of the encoding file on disk and
+				 * also the name for new encoding. */
 {
-    int objc, i, ch;
-    Tcl_Obj **objv;
-    Tcl_Obj *pathPtr;
-    Tcl_Channel chan;
-    Tcl_Encoding encoding;
-
-    pathPtr = TclGetLibraryPath();
-    if (pathPtr == NULL) {
-	goto unknown;
-    }
-    objc = 0;
-    Tcl_ListObjGetElements(NULL, pathPtr, &objc, &objv);
-
-    chan = NULL;
-    for (i = 0; i < objc; i++) {
-	chan = OpenEncodingFile(Tcl_GetString(objv[i]), name);
-	if (chan != NULL) {
-	    break;
-	}
-    }
+    Tcl_Channel chan = NULL;
+    Tcl_Encoding encoding = NULL;
+    int ch;
 
+    chan = OpenEncodingFileChannel(interp, name);
     if (chan == NULL) {
-	goto unknown;
+	return NULL;
     }
 
     Tcl_SetChannelOption(NULL, chan, "-encoding", "utf-8");
@@ -1332,89 +1606,26 @@ LoadEncodingFile(interp, name)
 	}
     }
 
-    encoding = NULL;
     switch (ch) {
-	case 'S': {
-	    encoding = LoadTableEncoding(interp, name, ENCODING_SINGLEBYTE,
-		    chan);
-	    break;
-	}
-	case 'D': {
-	    encoding = LoadTableEncoding(interp, name, ENCODING_DOUBLEBYTE,
-		    chan);
-	    break;
-	}
-	case 'M': {
-	    encoding = LoadTableEncoding(interp, name, ENCODING_MULTIBYTE,
-		    chan);
-	    break;
-	}
-	case 'E': {
-	    encoding = LoadEscapeEncoding(name, chan);
-	    break;
-	}
+    case 'S':
+	encoding = LoadTableEncoding(name, ENCODING_SINGLEBYTE, chan);
+	break;
+    case 'D':
+	encoding = LoadTableEncoding(name, ENCODING_DOUBLEBYTE, chan);
+	break;
+    case 'M':
+	encoding = LoadTableEncoding(name, ENCODING_MULTIBYTE, chan);
+	break;
+    case 'E':
+	encoding = LoadEscapeEncoding(name, chan);
+	break;
     }
     if ((encoding == NULL) && (interp != NULL)) {
 	Tcl_AppendResult(interp, "invalid encoding file \"", name, "\"", NULL);
-	if (ch == 'E') {
-	    Tcl_AppendResult(interp, " or missing sub-encoding", NULL);
-	}
     }
     Tcl_Close(NULL, chan);
-    return encoding;
-
-    unknown:
-    if (interp != NULL) {
-	Tcl_AppendResult(interp, "unknown encoding \"", name, "\"", NULL);
-    }
-    return NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * OpenEncodingFile --
- *
- *	Look for the file encoding/<name>.enc in the specified
- *	directory.
- *
- * Results:
- *	Returns an open file channel if the file exists.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
 
-static Tcl_Channel
-OpenEncodingFile(dir, name)
-    CONST char *dir;
-    CONST char *name;
-
-{
-    CONST char *argv[3];
-    Tcl_DString pathString;
-    CONST char *path;
-    Tcl_Channel chan;
-    Tcl_Obj *pathPtr;
-    
-    argv[0] = dir;
-    argv[1] = "encoding";
-    argv[2] = name;
-
-    Tcl_DStringInit(&pathString);
-    Tcl_JoinPath(3, argv, &pathString);
-    path = Tcl_DStringAppend(&pathString, ".enc", -1);
-    pathPtr = Tcl_NewStringObj(path,-1);
-
-    Tcl_IncrRefCount(pathPtr);
-    chan = Tcl_FSOpenFileChannel(NULL, pathPtr, "r", 0);
-    Tcl_DecrRefCount(pathPtr);
-
-    Tcl_DStringFree(&pathString);
-
-    return chan;
+    return encoding;
 }
 
 /*
@@ -1422,17 +1633,17 @@ OpenEncodingFile(dir, name)
  *
  * LoadTableEncoding --
  *
- *	Helper function for LoadEncodingTable().  Loads a table to that 
- *	converts between Unicode and some other encoding and creates an 
+ *	Helper function for LoadEncodingTable(). Loads a table to that
+ *	converts between Unicode and some other encoding and creates an
  *	encoding (using a TableEncoding structure) from that information.
  *
- *	File contains binary data, but begins with a marker to indicate 
- *	byte-ordering, so that same binary file can be read on either
- *	endian platforms.
+ *	File contains binary data, but begins with a marker to indicate
+ *	byte-ordering, so that same binary file can be read on either endian
+ *	platforms.
  *
  * Results:
- *	The return value is the new encoding, or NULL if the encoding 
- *	could not be created (because the file contained invalid data).
+ *	The return value is the new encoding, or NULL if the encoding could
+ *	not be created (because the file contained invalid data).
  *
  * Side effects:
  *	None.
@@ -1441,11 +1652,10 @@ OpenEncodingFile(dir, name)
  */
 
 static Tcl_Encoding
-LoadTableEncoding(interp, name, type, chan)
-    Tcl_Interp *interp;		/* Interp for temporary obj while reading. */
-    CONST char *name;		/* Name for new encoding. */
-    int type;			/* Type of encoding (ENCODING_?????). */
-    Tcl_Channel chan;		/* File containing new encoding. */
+LoadTableEncoding(
+    const char *name,		/* Name for new encoding. */
+    int type,			/* Type of encoding (ENCODING_?????). */
+    Tcl_Channel chan)		/* File containing new encoding. */
 {
     Tcl_DString lineString;
     Tcl_Obj *objPtr;
@@ -1462,7 +1672,7 @@ LoadTableEncoding(interp, name, type, chan)
      * sequences in the encoding files.
      */
 
-    static CONST char staticHex[] = {
+    static const char staticHex[] = {
       0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*   0 ...  15 */
       0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*  16 ...  31 */
       0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*  32 ...  47 */
@@ -1507,9 +1717,9 @@ LoadTableEncoding(interp, name, type, chan)
     dataPtr->fallback = fallback;
 
     /*
-     * Read the table that maps characters to Unicode.  Performs a single
-     * malloc to get the memory for the array and all the pages needed by
-     * the array.
+     * Read the table that maps characters to Unicode. Performs a single
+     * malloc to get the memory for the array and all the pages needed by the
+     * array.
      */
 
     size = 256 * sizeof(unsigned short *) + numPages * PAGESIZE;
@@ -1517,26 +1727,23 @@ LoadTableEncoding(interp, name, type, chan)
     memset(dataPtr->toUnicode, 0, size);
     pageMemPtr = (unsigned short *) (dataPtr->toUnicode + 256);
 
-    if (interp == NULL) {
-	objPtr = Tcl_NewObj();
-    } else {
-	objPtr = Tcl_GetObjResult(interp);
-    }
+    TclNewObj(objPtr);
+    Tcl_IncrRefCount(objPtr);
     for (i = 0; i < numPages; i++) {
 	int ch;
 	char *p;
 
 	Tcl_ReadChars(chan, objPtr, 3 + 16 * (16 * 4 + 1), 0);
 	p = Tcl_GetString(objPtr);
-	hi = (staticHex[(unsigned int)p[0]] << 4) + staticHex[(unsigned int)p[1]];
+	hi = (staticHex[UCHAR(p[0])] << 4) + staticHex[UCHAR(p[1])];
 	dataPtr->toUnicode[hi] = pageMemPtr;
 	p += 2;
 	for (lo = 0; lo < 256; lo++) {
 	    if ((lo & 0x0f) == 0) {
 		p++;
 	    }
-	    ch = (staticHex[(unsigned int)p[0]] << 12) + (staticHex[(unsigned int)p[1]] << 8)
-		+ (staticHex[(unsigned int)p[2]] << 4) + staticHex[(unsigned int)p[3]];
+	    ch = (staticHex[UCHAR(p[0])] << 12) + (staticHex[UCHAR(p[1])] << 8)
+		    + (staticHex[UCHAR(p[2])] << 4) + staticHex[UCHAR(p[3])];
 	    if (ch != 0) {
 		used[ch >> 8] = 1;
 	    }
@@ -1545,12 +1752,8 @@ LoadTableEncoding(interp, name, type, chan)
 	    p += 4;
 	}
     }
-    if (interp == NULL) {
-	Tcl_DecrRefCount(objPtr);
-    } else {
-	Tcl_ResetResult(interp);
-    }
-	
+    TclDecrRefCount(objPtr);
+
     if (type == ENCODING_DOUBLEBYTE) {
 	memset(dataPtr->prefixBytes, 1, sizeof(dataPtr->prefixBytes));
     } else {
@@ -1562,10 +1765,10 @@ LoadTableEncoding(interp, name, type, chan)
     }
 
     /*
-     * Invert toUnicode array to produce the fromUnicode array.  Performs a
-     * single malloc to get the memory for the array and all the pages
-     * needed by the array.  While reading in the toUnicode array, we
-     * remembered what pages that would be needed for the fromUnicode array.
+     * Invert toUnicode array to produce the fromUnicode array. Performs a
+     * single malloc to get the memory for the array and all the pages needed
+     * by the array. While reading in the toUnicode array, we remembered what
+     * pages that would be needed for the fromUnicode array.
      */
 
     if (symbol) {
@@ -1592,7 +1795,7 @@ LoadTableEncoding(interp, name, type, chan)
 		ch = dataPtr->toUnicode[hi][lo];
 		if (ch != 0) {
 		    unsigned short *page;
-		    
+
 		    page = dataPtr->fromUnicode[ch >> 8];
 		    if (page == NULL) {
 			page = pageMemPtr;
@@ -1607,7 +1810,7 @@ LoadTableEncoding(interp, name, type, chan)
     if (type == ENCODING_MULTIBYTE) {
 	/*
 	 * If multibyte encodings don't have a backslash character, define
-	 * one.  Otherwise, on Windows, native file names won't work because
+	 * one. Otherwise, on Windows, native file names won't work because
 	 * the backslash in the file name will map to the unknown character
 	 * (question mark) when converting from UTF-8 to external encoding.
 	 */
@@ -1620,16 +1823,15 @@ LoadTableEncoding(interp, name, type, chan)
     }
     if (symbol) {
 	unsigned short *page;
-	
+
 	/*
 	 * Make a special symbol encoding that not only maps the symbol
 	 * characters from their Unicode code points down into page 0, but
-	 * also ensure that the characters on page 0 map to themselves.
-	 * This is so that a symbol font can be used to display a simple
-	 * string like "abcd" and have alpha, beta, chi, delta show up,
-	 * rather than have "unknown" chars show up because strictly
-	 * speaking the symbol font doesn't have glyphs for those low ascii
-	 * chars.
+	 * also ensure that the characters on page 0 map to themselves. This
+	 * is so that a symbol font can be used to display a simple string
+	 * like "abcd" and have alpha, beta, chi, delta show up, rather than
+	 * have "unknown" chars show up because strictly speaking the symbol
+	 * font doesn't have glyphs for those low ascii chars.
 	 */
 
 	page = dataPtr->fromUnicode[0];
@@ -1648,15 +1850,23 @@ LoadTableEncoding(interp, name, type, chan)
 	    dataPtr->fromUnicode[hi] = emptyPage;
 	}
     }
+
     /*
-     * For trailing 'R'everse encoding, see [Patch #689341]
+     * For trailing 'R'everse encoding, see [Patch 689341]
      */
+
     Tcl_DStringInit(&lineString);
     do {
 	int len;
-	/* skip leading empty lines */
-	while ((len = Tcl_Gets(chan, &lineString)) == 0)
-	    ;
+
+	/*
+	 * Skip leading empty lines.
+	 */
+
+	while ((len = Tcl_Gets(chan, &lineString)) == 0) {
+	    /* empty body */
+	}
+
 	if (len < 0) {
 	    break;
 	}
@@ -1665,16 +1875,17 @@ LoadTableEncoding(interp, name, type, chan)
 	    break;
 	}
 	for (Tcl_DStringSetLength(&lineString, 0);
-	     (len = Tcl_Gets(chan, &lineString)) >= 0;
-	     Tcl_DStringSetLength(&lineString, 0)) {
+		(len = Tcl_Gets(chan, &lineString)) >= 0;
+		Tcl_DStringSetLength(&lineString, 0)) {
 	    unsigned char* p;
 	    int to, from;
+
 	    if (len < 5) {
 		continue;
 	    }
 	    p = (unsigned char*) Tcl_DStringValue(&lineString);
 	    to = (staticHex[p[0]] << 12) + (staticHex[p[1]] << 8)
-		+ (staticHex[p[2]] << 4) + staticHex[p[3]];
+		    + (staticHex[p[2]] << 4) + staticHex[p[3]];
 	    if (to == 0) {
 	    	continue;
 	    }
@@ -1696,6 +1907,7 @@ LoadTableEncoding(interp, name, type, chan)
     encType.freeProc	    = TableFreeProc;
     encType.nullSize	    = (type == ENCODING_DOUBLEBYTE) ? 2 : 1;
     encType.clientData	    = (ClientData) dataPtr;
+
     return Tcl_CreateEncoding(&encType);
 }
 
@@ -1704,16 +1916,16 @@ LoadTableEncoding(interp, name, type, chan)
  *
  * LoadEscapeEncoding --
  *
- *	Helper function for LoadEncodingTable().  Loads a state machine
- *	that converts between Unicode and some other encoding.  
+ *	Helper function for LoadEncodingTable(). Loads a state machine that
+ *	converts between Unicode and some other encoding.
  *
- *	File contains text data that describes the escape sequences that
- *	are used to choose an encoding and the associated names for the 
+ *	File contains text data that describes the escape sequences that are
+ *	used to choose an encoding and the associated names for the
  *	sub-encodings.
  *
  * Results:
- *	The return value is the new encoding, or NULL if the encoding 
- *	could not be created (because the file contained invalid data).
+ *	The return value is the new encoding, or NULL if the encoding could
+ *	not be created (because the file contained invalid data).
  *
  * Side effects:
  *	None.
@@ -1722,11 +1934,11 @@ LoadTableEncoding(interp, name, type, chan)
  */
 
 static Tcl_Encoding
-LoadEscapeEncoding(name, chan)
-    CONST char *name;		/* Name for new encoding. */
-    Tcl_Channel chan;		/* File containing new encoding. */
+LoadEscapeEncoding(
+    const char *name,		/* Name for new encoding. */
+    Tcl_Channel chan)		/* File containing new encoding. */
 {
-    int i, missingSubEncoding = 0;
+    int i;
     unsigned int size;
     Tcl_DString escapeData;
     char init[16], final[16];
@@ -1739,21 +1951,21 @@ LoadEscapeEncoding(name, chan)
 
     while (1) {
 	int argc;
-	CONST char **argv;
+	const char **argv;
 	char *line;
 	Tcl_DString lineString;
-	
+
 	Tcl_DStringInit(&lineString);
 	if (Tcl_Gets(chan, &lineString) < 0) {
 	    break;
 	}
 	line = Tcl_DStringValue(&lineString);
-        if (Tcl_SplitList(NULL, line, &argc, &argv) != TCL_OK) {
+	if (Tcl_SplitList(NULL, line, &argc, &argv) != TCL_OK) {
 	    continue;
 	}
 	if (argc >= 2) {
 	    if (strcmp(argv[0], "name") == 0) {
-		;
+		/* do nothing */
 	    } else if (strcmp(argv[0], "init") == 0) {
 		strncpy(init, argv[1], sizeof(init));
 		init[sizeof(init) - 1] = '\0';
@@ -1762,6 +1974,7 @@ LoadEscapeEncoding(name, chan)
 		final[sizeof(final) - 1] = '\0';
 	    } else {
 		EscapeSubTable est;
+		Encoding *e;
 
 		strncpy(est.sequence, argv[1], sizeof(est.sequence));
 		est.sequence[sizeof(est.sequence) - 1] = '\0';
@@ -1771,36 +1984,33 @@ LoadEscapeEncoding(name, chan)
 		est.name[sizeof(est.name) - 1] = '\0';
 
 		/*
-		 * Load the subencodings first so we're never stuck
-		 * trying to use a half-loaded system encoding to
-		 * open/read a *.enc file.
+		 * To avoid infinite recursion in [encoding system iso2022-*]
 		 */
 
-		est.encodingPtr = (Encoding *) Tcl_GetEncoding(NULL, est.name);
-		if ((est.encodingPtr == NULL) 
-			|| (est.encodingPtr->toUtfProc != TableToUtfProc)) {
-		    missingSubEncoding = 1;
+		e = (Encoding *) Tcl_GetEncoding(NULL, est.name);
+		if (e && e->toUtfProc != TableToUtfProc &&
+			e->toUtfProc != Iso88591ToUtfProc) {
+		   Tcl_FreeEncoding((Tcl_Encoding) e);
+		   e = NULL;
 		}
+		est.encodingPtr = e;
 		Tcl_DStringAppend(&escapeData, (char *) &est, sizeof(est));
 	    }
 	}
 	ckfree((char *) argv);
 	Tcl_DStringFree(&lineString);
     }
-    if (missingSubEncoding) {
-	Tcl_DStringFree(&escapeData);
-	return NULL;
-    }
 
-    size = sizeof(EscapeEncodingData)
-	    - sizeof(EscapeSubTable) + Tcl_DStringLength(&escapeData);
+    size = sizeof(EscapeEncodingData) - sizeof(EscapeSubTable)
+	    + Tcl_DStringLength(&escapeData);
     dataPtr = (EscapeEncodingData *) ckalloc(size);
     dataPtr->initLen = strlen(init);
     strcpy(dataPtr->init, init);
     dataPtr->finalLen = strlen(final);
     strcpy(dataPtr->final, final);
-    dataPtr->numSubTables = Tcl_DStringLength(&escapeData) / sizeof(EscapeSubTable);
-    memcpy((VOID *) dataPtr->subTables, (VOID *) Tcl_DStringValue(&escapeData),
+    dataPtr->numSubTables =
+	    Tcl_DStringLength(&escapeData) / sizeof(EscapeSubTable);
+    memcpy(dataPtr->subTables, Tcl_DStringValue(&escapeData),
 	    (size_t) Tcl_DStringLength(&escapeData));
     Tcl_DStringFree(&escapeData);
 
@@ -1830,9 +2040,9 @@ LoadEscapeEncoding(name, chan)
  *
  * BinaryProc --
  *
- *	The default conversion when no other conversion is specified.
- *	No translation is done; source bytes are copied directly to 
- *	destination bytes.
+ *	The default conversion when no other conversion is specified. No
+ *	translation is done; source bytes are copied directly to destination
+ *	bytes.
  *
  * Results:
  *	Returns TCL_OK if conversion was successful.
@@ -1844,27 +2054,26 @@ LoadEscapeEncoding(name, chan)
  */
 
 static int
-BinaryProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* Not used. */
-    CONST char *src;		/* Source string (unknown encoding). */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+BinaryProc(
+    ClientData clientData,	/* Not used. */
+    const char *src,		/* Source string (unknown encoding). */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
+    int *srcReadPtr,		/* Filled with the number of bytes from the
 				 * source string that were converted. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
@@ -1883,18 +2092,17 @@ BinaryProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
     *srcReadPtr = srcLen;
     *dstWrotePtr = srcLen;
     *dstCharsPtr = srcLen;
-    memcpy((void *) dst, (void *) src, (size_t) srcLen);
+    memcpy(dst, src, (size_t) srcLen);
     return result;
 }
 
-
 /*
  *-------------------------------------------------------------------------
  *
  * UtfExtToUtfIntProc --
  *
- *	Convert from UTF-8 to UTF-8. While converting null-bytes from
- *	the Tcl's internal representation (0xc0, 0x80) to the official
+ *	Convert from UTF-8 to UTF-8. While converting null-bytes from the
+ *	Tcl's internal representation (0xc0, 0x80) to the official
  *	representation (0x00). See UtfToUtfProc for details.
  *
  * Results:
@@ -1905,36 +2113,36 @@ BinaryProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *
  *-------------------------------------------------------------------------
  */
-static int 
-UtfIntToUtfExtProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	     srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* Not used. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+
+static int
+UtfIntToUtfExtProc(
+    ClientData clientData,	/* Not used. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
+    char *dst,			/* Output buffer in which converted string
 				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
     return UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-			srcReadPtr, dstWrotePtr, dstCharsPtr, 1);
+	    srcReadPtr, dstWrotePtr, dstCharsPtr, 1);
 }
 
 /*
@@ -1942,9 +2150,9 @@ UtfIntToUtfExtProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *
  * UtfExtToUtfIntProc --
  *
- *	Convert from UTF-8 to UTF-8 while converting null-bytes from
- *	the official representation (0x00) to Tcl's internal
- *	representation (0xc0, 0x80). See UtfToUtfProc for details.
+ *	Convert from UTF-8 to UTF-8 while converting null-bytes from the
+ *	official representation (0x00) to Tcl's internal representation (0xc0,
+ *	0x80). See UtfToUtfProc for details.
  *
  * Results:
  *	Returns TCL_OK if conversion was successful.
@@ -1954,36 +2162,35 @@ UtfIntToUtfExtProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *
  *-------------------------------------------------------------------------
  */
-static int 
-UtfExtToUtfIntProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	     srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* Not used. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+static int
+UtfExtToUtfIntProc(
+    ClientData clientData,	/* Not used. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
     return UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-			srcReadPtr, dstWrotePtr, dstCharsPtr, 0);
+	    srcReadPtr, dstWrotePtr, dstCharsPtr, 0);
 }
 
 /*
@@ -1991,9 +2198,9 @@ UtfExtToUtfIntProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *
  * UtfToUtfProc --
  *
- *	Convert from UTF-8 to UTF-8.  Note that the UTF-8 to UTF-8 
- *	translation is not a no-op, because it will turn a stream of
- *	improperly formed UTF-8 into a properly formed stream.
+ *	Convert from UTF-8 to UTF-8. Note that the UTF-8 to UTF-8 translation
+ *	is not a no-op, because it will turn a stream of improperly formed
+ *	UTF-8 into a properly formed stream.
  *
  * Results:
  *	Returns TCL_OK if conversion was successful.
@@ -2004,45 +2211,43 @@ UtfExtToUtfIntProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *-------------------------------------------------------------------------
  */
 
-static int 
-UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	     srcReadPtr, dstWrotePtr, dstCharsPtr, pureNullMode)
-    ClientData clientData;	/* Not used. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+static int
+UtfToUtfProc(
+    ClientData clientData,	/* Not used. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr,		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
-    int pureNullMode;		/* Convert embedded nulls from
-				 * internal representation to real
-				 * null-bytes or vice versa */
-
+    int pureNullMode)		/* Convert embedded nulls from internal
+				 * representation to real null-bytes or vice
+				 * versa. */
 {
-    CONST char *srcStart, *srcEnd, *srcClose;
+    const char *srcStart, *srcEnd, *srcClose;
     char *dstStart, *dstEnd;
     int result, numChars;
     Tcl_UniChar ch;
 
     result = TCL_OK;
-    
+
     srcStart = src;
     srcEnd = src + srcLen;
     srcClose = srcEnd;
@@ -2067,26 +2272,26 @@ UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    result = TCL_CONVERT_NOSPACE;
 	    break;
 	}
-	if (UCHAR(*src) < 0x80 &&
-	    !(UCHAR(*src) == 0 && pureNullMode == 0)) {
+	if (UCHAR(*src) < 0x80 && !(UCHAR(*src) == 0 && pureNullMode == 0)) {
 	    /*
-	     * Copy 7bit chatacters, but skip null-bytes when we are
-	     * in input mode, so that they get converted to 0xc080.
+	     * Copy 7bit chatacters, but skip null-bytes when we are in input
+	     * mode, so that they get converted to 0xc080.
 	     */
+
 	    *dst++ = *src++;
-	} else if (pureNullMode == 1 &&
-		   UCHAR(*src) == 0xc0 &&
-		   UCHAR(*(src+1)) == 0x80) {
-	    /* 
+	} else if (pureNullMode == 1 && UCHAR(*src) == 0xc0 &&
+		UCHAR(*(src+1)) == 0x80) {
+	    /*
 	     * Convert 0xc080 to real nulls when we are in output mode.
 	     */
+
 	    *dst++ = 0;
 	    src += 2;
 	} else if (!Tcl_UtfCharComplete(src, srcEnd - src)) {
-	    /* Always check before using Tcl_UtfToUniChar. Not doing
-	     * can so cause it run beyond the endof the buffer!  If we
-	     * happen such an incomplete char its bytes are made to
-	     * represent themselves.
+	    /*
+	     * Always check before using Tcl_UtfToUniChar. Not doing can so
+	     * cause it run beyond the endof the buffer! If we happen such an
+	     * incomplete char its byts are made to represent themselves.
 	     */
 
 	    ch = (unsigned char) *src;
@@ -2098,7 +2303,7 @@ UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	}
     }
 
-    *srcReadPtr  = src - srcStart;
+    *srcReadPtr = src - srcStart;
     *dstWrotePtr = dst - dstStart;
     *dstCharsPtr = numChars;
     return result;
@@ -2120,35 +2325,34 @@ UtfToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *-------------------------------------------------------------------------
  */
 
-static int 
-UnicodeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* Not used. */
-    CONST char *src;		/* Source string in Unicode. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+static int
+UnicodeToUtfProc(
+    ClientData clientData,	/* Not used. */
+    const char *src,		/* Source string in Unicode. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
-    CONST char *srcStart, *srcEnd;
+    const char *srcStart, *srcEnd;
     char *dstEnd, *dstStart;
     int result, numChars;
     Tcl_UniChar ch;
@@ -2206,35 +2410,35 @@ UnicodeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *-------------------------------------------------------------------------
  */
 
-static int 
-UtfToUnicodeProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* TableEncodingData that specifies encoding. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+static int
+UtfToUnicodeProc(
+    ClientData clientData,	/* TableEncodingData that specifies
+				 * encoding. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
-    CONST char *srcStart, *srcEnd, *srcClose, *dstStart, *dstEnd;
+    const char *srcStart, *srcEnd, *srcClose, *dstStart, *dstEnd;
     int result, numChars;
     Tcl_UniChar ch;
 
@@ -2300,43 +2504,42 @@ UtfToUnicodeProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *-------------------------------------------------------------------------
  */
 
-static int 
-TableToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* TableEncodingData that specifies
+static int
+TableToUtfProc(
+    ClientData clientData,	/* TableEncodingData that specifies
 				 * encoding. */
-    CONST char *src;		/* Source string in specified encoding. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
-    CONST char *srcStart, *srcEnd;
+    const char *srcStart, *srcEnd;
     char *dstEnd, *dstStart, *prefixBytes;
     int result, byte, numChars;
     Tcl_UniChar ch;
     unsigned short **toUnicode;
     unsigned short *pageZero;
     TableEncodingData *dataPtr;
-    
+
     srcStart = src;
     srcEnd = src + srcLen;
 
@@ -2350,10 +2553,10 @@ TableToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 
     result = TCL_OK;
     for (numChars = 0; src < srcEnd; numChars++) {
-        if (dst > dstEnd) {
-            result = TCL_CONVERT_NOSPACE;
-            break;
-        }
+	if (dst > dstEnd) {
+	    result = TCL_CONVERT_NOSPACE;
+	    break;
+	}
 	byte = *((unsigned char *) src);
 	if (prefixBytes[byte]) {
 	    src++;
@@ -2384,8 +2587,9 @@ TableToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	} else {
 	    dst += Tcl_UniCharToUtf(ch, dst);
 	}
-        src++;
+	src++;
     }
+
     *srcReadPtr = src - srcStart;
     *dstWrotePtr = dst - dstStart;
     *dstCharsPtr = numChars;
@@ -2409,48 +2613,47 @@ TableToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *-------------------------------------------------------------------------
  */
 
-static int 
-TableFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* TableEncodingData that specifies
+static int
+TableFromUtfProc(
+    ClientData clientData,	/* TableEncodingData that specifies
 				 * encoding. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
-    CONST char *srcStart, *srcEnd, *srcClose;
+    const char *srcStart, *srcEnd, *srcClose;
     char *dstStart, *dstEnd, *prefixBytes;
     Tcl_UniChar ch;
     int result, len, word, numChars;
     TableEncodingData *dataPtr;
     unsigned short **fromUnicode;
-    
-    result = TCL_OK;    
+
+    result = TCL_OK;
 
     dataPtr = (TableEncodingData *) clientData;
     prefixBytes = dataPtr->prefixBytes;
     fromUnicode = dataPtr->fromUnicode;
-    
+
     srcStart = src;
     srcEnd = src + srcLen;
     srcClose = srcEnd;
@@ -2475,9 +2678,10 @@ TableFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 
 #if TCL_UTF_MAX > 3
 	/*
-	 * This prevents a crash condition.  More evaluation is required
-	 * for full support of int Tcl_UniChar. [Bug 1004065]
+	 * This prevents a crash condition. More evaluation is required for
+	 * full support of int Tcl_UniChar. [Bug 1004065]
 	 */
+
 	if (ch & 0xffff0000) {
 	    word = 0;
 	} else
@@ -2489,7 +2693,7 @@ TableFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 		result = TCL_CONVERT_UNKNOWN;
 		break;
 	    }
-	    word = dataPtr->fallback; 
+	    word = dataPtr->fallback;
 	}
 	if (prefixBytes[(word >> 8)] != 0) {
 	    if (dst + 1 > dstEnd) {
@@ -2506,9 +2710,194 @@ TableFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    }
 	    dst[0] = (char) word;
 	    dst++;
-	} 
+	}
+	src += len;
+    }
+
+    *srcReadPtr = src - srcStart;
+    *dstWrotePtr = dst - dstStart;
+    *dstCharsPtr = numChars;
+    return result;
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * Iso88591ToUtfProc --
+ *
+ *	Convert from the "iso8859-1" encoding into UTF-8.
+ *
+ * Results:
+ *	Returns TCL_OK if conversion was successful.
+ *
+ * Side effects:
+ *	None.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static int
+Iso88591ToUtfProc(
+    ClientData clientData,	/* Ignored. */
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
+				 * initialized and/or reset by conversion
+				 * routine under control of flags argument. */
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
+				 * bytes. */
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
+				 * stored in the output buffer as a result of
+				 * the conversion. */
+    int *dstCharsPtr)		/* Filled with the number of characters that
+				 * correspond to the bytes stored in the
+				 * output buffer. */
+{
+    const char *srcStart, *srcEnd;
+    char *dstEnd, *dstStart;
+    int result, numChars;
+
+    srcStart = src;
+    srcEnd = src + srcLen;
+
+    dstStart = dst;
+    dstEnd = dst + dstLen - TCL_UTF_MAX;
+
+    result = TCL_OK;
+    for (numChars = 0; src < srcEnd; numChars++) {
+	Tcl_UniChar ch;
+
+	if (dst > dstEnd) {
+	    result = TCL_CONVERT_NOSPACE;
+	    break;
+	}
+	ch = (Tcl_UniChar) *((unsigned char *) src);
+	/*
+	 * Special case for 1-byte utf chars for speed.
+	 */
+	if (ch && ch < 0x80) {
+	    *dst++ = (char) ch;
+	} else {
+	    dst += Tcl_UniCharToUtf(ch, dst);
+	}
+	src++;
+    }
+
+    *srcReadPtr = src - srcStart;
+    *dstWrotePtr = dst - dstStart;
+    *dstCharsPtr = numChars;
+    return result;
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * Iso88591FromUtfProc --
+ *
+ *	Convert from UTF-8 into the encoding "iso8859-1".
+ *
+ * Results:
+ *	Returns TCL_OK if conversion was successful.
+ *
+ * Side effects:
+ *	None.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static int
+Iso88591FromUtfProc(
+    ClientData clientData,	/* Ignored. */
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
+				 * initialized and/or reset by conversion
+				 * routine under control of flags argument. */
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
+				 * bytes. */
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
+				 * stored in the output buffer as a result of
+				 * the conversion. */
+    int *dstCharsPtr)		/* Filled with the number of characters that
+				 * correspond to the bytes stored in the
+				 * output buffer. */
+{
+    const char *srcStart, *srcEnd, *srcClose;
+    char *dstStart, *dstEnd;
+    int result, numChars;
+
+    result = TCL_OK;
+
+    srcStart = src;
+    srcEnd = src + srcLen;
+    srcClose = srcEnd;
+    if ((flags & TCL_ENCODING_END) == 0) {
+	srcClose -= TCL_UTF_MAX;
+    }
+
+    dstStart = dst;
+    dstEnd = dst + dstLen - 1;
+
+    for (numChars = 0; src < srcEnd; numChars++) {
+	Tcl_UniChar ch;
+	int len;
+
+	if ((src > srcClose) && (!Tcl_UtfCharComplete(src, srcEnd - src))) {
+	    /*
+	     * If there is more string to follow, this will ensure that the
+	     * last UTF-8 character in the source buffer hasn't been cut off.
+	     */
+
+	    result = TCL_CONVERT_MULTIBYTE;
+	    break;
+	}
+	len = TclUtfToUniChar(src, &ch);
+
+	/*
+	 * Check for illegal characters.
+	 */
+
+	if (ch > 0xff) {
+	    if (flags & TCL_ENCODING_STOPONERROR) {
+		result = TCL_CONVERT_UNKNOWN;
+		break;
+	    }
+
+	    /*
+	     * Plunge on, using '?' as a fallback character.
+	     */
+
+	    ch = (Tcl_UniChar) '?';
+	}
+
+	if (dst > dstEnd) {
+	    result = TCL_CONVERT_NOSPACE;
+	    break;
+	}
+	*(dst++) = (char) ch;
 	src += len;
     }
+
     *srcReadPtr = src - srcStart;
     *dstWrotePtr = dst - dstStart;
     *dstCharsPtr = numChars;
@@ -2520,8 +2909,8 @@ TableFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *
  * TableFreeProc --
  *
- *	This procedure is invoked when an encoding is deleted.  It deletes
- *	the memory used by the TableEncodingData.
+ *	This function is invoked when an encoding is deleted. It deletes the
+ *	memory used by the TableEncodingData.
  *
  * Results:
  *	None.
@@ -2533,14 +2922,14 @@ TableFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  */
 
 static void
-TableFreeProc(clientData)
-    ClientData clientData;	/* TableEncodingData that specifies
+TableFreeProc(
+    ClientData clientData)	/* TableEncodingData that specifies
 				 * encoding. */
 {
     TableEncodingData *dataPtr;
 
     /*
-     * Make sure we aren't freeing twice on shutdown.  [Bug #219314]
+     * Make sure we aren't freeing twice on shutdown. [Bug 219314]
      */
 
     dataPtr = (TableEncodingData *) clientData;
@@ -2566,32 +2955,31 @@ TableFreeProc(clientData)
  *-------------------------------------------------------------------------
  */
 
-static int 
-EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* EscapeEncodingData that specifies
+static int
+EscapeToUtfProc(
+    ClientData clientData,	/* EscapeEncodingData that specifies
 				 * encoding. */
-    CONST char *src;		/* Source string in specified encoding. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
@@ -2600,7 +2988,7 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
     unsigned short **tableToUnicode;
     Encoding *encodingPtr;
     int state, result, numChars;
-    CONST char *srcStart, *srcEnd;
+    const char *srcStart, *srcEnd;
     char *dstStart, *dstEnd;
 
     result = TCL_OK;
@@ -2618,7 +3006,7 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
     dstStart = dst;
     dstEnd = dst + dstLen - TCL_UTF_MAX;
 
-    state = (int) *statePtr;
+    state = PTR2INT(*statePtr);
     if (flags & TCL_ENCODING_START) {
 	state = 0;
     }
@@ -2626,54 +3014,56 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
     for (numChars = 0; src < srcEnd; ) {
 	int byte, hi, lo, ch;
 
-        if (dst > dstEnd) {
-            result = TCL_CONVERT_NOSPACE;
-            break;
-        }
+	if (dst > dstEnd) {
+	    result = TCL_CONVERT_NOSPACE;
+	    break;
+	}
 	byte = *((unsigned char *) src);
 	if (prefixBytes[byte]) {
 	    unsigned int left, len, longest;
 	    int checked, i;
 	    EscapeSubTable *subTablePtr;
-	    
+
 	    /*
-	     * Saw the beginning of an escape sequence. 
+	     * Saw the beginning of an escape sequence.
 	     */
-	     
+
 	    left = srcEnd - src;
 	    len = dataPtr->initLen;
 	    longest = len;
 	    checked = 0;
+
 	    if (len <= left) {
 		checked++;
-		if ((len > 0) && 
-			(memcmp(src, dataPtr->init, len) == 0)) {
+		if ((len > 0) && (memcmp(src, dataPtr->init, len) == 0)) {
 		    /*
 		     * If we see initialization string, skip it, even if we're
-		     * not at the beginning of the buffer. 
+		     * not at the beginning of the buffer.
 		     */
-		     
+
 		    src += len;
 		    continue;
 		}
 	    }
+
 	    len = dataPtr->finalLen;
 	    if (len > longest) {
 		longest = len;
 	    }
+
 	    if (len <= left) {
 		checked++;
-		if ((len > 0) && 
-			(memcmp(src, dataPtr->final, len) == 0)) {
+		if ((len > 0) && (memcmp(src, dataPtr->final, len) == 0)) {
 		    /*
 		     * If we see finalization string, skip it, even if we're
-		     * not at the end of the buffer. 
+		     * not at the end of the buffer.
 		     */
-		     
+
 		    src += len;
 		    continue;
 		}
 	    }
+
 	    subTablePtr = dataPtr->subTables;
 	    for (i = 0; i < dataPtr->numSubTables; i++) {
 		len = subTablePtr->sequenceLen;
@@ -2682,7 +3072,7 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 		}
 		if (len <= left) {
 		    checked++;
-		    if ((len > 0) && 
+		    if ((len > 0) &&
 			    (memcmp(src, subTablePtr->sequence, len) == 0)) {
 			state = i;
 			encodingPtr = NULL;
@@ -2693,6 +3083,7 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 		}
 		subTablePtr++;
 	    }
+
 	    if (subTablePtr == NULL) {
 		/*
 		 * A match was found, the escape sequence was consumed, and
@@ -2703,9 +3094,9 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    }
 
 	    /*
-	     * We have a split-up or unrecognized escape sequence.  If we
-	     * checked all the sequences, then it's a syntax error,
-	     * otherwise we need more bytes to determine a match.
+	     * We have a split-up or unrecognized escape sequence. If we
+	     * checked all the sequences, then it's a syntax error, otherwise
+	     * we need more bytes to determine a match.
 	     */
 
 	    if ((checked == dataPtr->numSubTables + 2)
@@ -2733,6 +3124,7 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    tablePrefixBytes = tableDataPtr->prefixBytes;
 	    tableToUnicode = tableDataPtr->toUnicode;
 	}
+
 	if (tablePrefixBytes[byte]) {
 	    src++;
 	    if (src >= srcEnd) {
@@ -2746,13 +3138,14 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    hi = 0;
 	    lo = byte;
 	}
+
 	ch = tableToUnicode[hi][lo];
 	dst += Tcl_UniCharToUtf(ch, dst);
 	src++;
 	numChars++;
     }
 
-    *statePtr = (Tcl_EncodingState) state;
+    *statePtr = (Tcl_EncodingState) INT2PTR(state);
     *srcReadPtr = src - srcStart;
     *dstWrotePtr = dst - dstStart;
     *dstCharsPtr = numChars;
@@ -2776,45 +3169,44 @@ EscapeToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *-------------------------------------------------------------------------
  */
 
-static int 
-EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* EscapeEncodingData that specifies
+static int
+EscapeFromUtfProc(
+    ClientData clientData,	/* EscapeEncodingData that specifies
 				 * encoding. */
-    CONST char *src;		/* Source string in UTF-8. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Place for conversion routine to store
-				 * state information used during a piecewise
-				 * conversion.  Contents of statePtr are
+    const char *src,		/* Source string in UTF-8. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
+				 * information used during a piecewise
+				 * conversion. Contents of statePtr are
 				 * initialized and/or reset by conversion
 				 * routine under control of flags argument. */
-    char *dst;			/* Output buffer in which converted string
-				 * is stored. */
-    int dstLen;			/* The maximum length of output buffer in
+    char *dst,			/* Output buffer in which converted string is
+				 * stored. */
+    int dstLen,			/* The maximum length of output buffer in
 				 * bytes. */
-    int *srcReadPtr;		/* Filled with the number of bytes from the
-				 * source string that were converted.  This
-				 * may be less than the original source length
-				 * if there was a problem converting some
-				 * source characters. */
-    int *dstWrotePtr;		/* Filled with the number of bytes that were
+    int *srcReadPtr,		/* Filled with the number of bytes from the
+				 * source string that were converted. This may
+				 * be less than the original source length if
+				 * there was a problem converting some source
+				 * characters. */
+    int *dstWrotePtr,		/* Filled with the number of bytes that were
 				 * stored in the output buffer as a result of
 				 * the conversion. */
-    int *dstCharsPtr;		/* Filled with the number of characters that
+    int *dstCharsPtr)		/* Filled with the number of characters that
 				 * correspond to the bytes stored in the
 				 * output buffer. */
 {
     EscapeEncodingData *dataPtr;
     Encoding *encodingPtr;
-    CONST char *srcStart, *srcEnd, *srcClose;
+    const char *srcStart, *srcEnd, *srcClose;
     char *dstStart, *dstEnd;
     int state, result, numChars;
     TableEncodingData *tableDataPtr;
     char *tablePrefixBytes;
     unsigned short **tableFromUnicode;
-    
-    result = TCL_OK;    
+
+    result = TCL_OK;
 
     dataPtr = (EscapeEncodingData *) clientData;
 
@@ -2830,7 +3222,7 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 
     /*
      * RFC1468 states that the text starts in ASCII, and switches to Japanese
-     * characters, and that the text must end in ASCII. [Patch #474358]
+     * characters, and that the text must end in ASCII. [Patch 474358]
      */
 
     if (flags & TCL_ENCODING_START) {
@@ -2840,11 +3232,10 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    *dstWrotePtr = 0;
 	    return TCL_CONVERT_NOSPACE;
 	}
-	memcpy((VOID *) dst, (VOID *) dataPtr->init,
-		(size_t) dataPtr->initLen);
+	memcpy(dst, dataPtr->init, (size_t)dataPtr->initLen);
 	dst += dataPtr->initLen;
     } else {
-        state = (int) *statePtr;
+	state = PTR2INT(*statePtr);
     }
 
     encodingPtr = GetTableEncoding(dataPtr, state);
@@ -2856,7 +3247,7 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	unsigned int len;
 	int word;
 	Tcl_UniChar ch;
-	
+
 	if ((src > srcClose) && (!Tcl_UtfCharComplete(src, srcEnd - src))) {
 	    /*
 	     * If there is more string to follow, this will ensure that the
@@ -2872,7 +3263,7 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	if ((word == 0) && (ch != 0)) {
 	    int oldState;
 	    EscapeSubTable *subTablePtr;
-	    
+
 	    oldState = state;
 	    for (state = 0; state < dataPtr->numSubTables; state++) {
 		encodingPtr = GetTableEncoding(dataPtr, state);
@@ -2892,16 +3283,17 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 		encodingPtr = GetTableEncoding(dataPtr, state);
 		tableDataPtr = (TableEncodingData *) encodingPtr->clientData;
 		word = tableDataPtr->fallback;
-	    } 
-	    
+	    }
+
 	    tablePrefixBytes = tableDataPtr->prefixBytes;
 	    tableFromUnicode = tableDataPtr->fromUnicode;
 
 	    /*
 	     * The state variable has the value of oldState when word is 0.
-	     * In this case, the escape sequense should not be copied to dst 
+	     * In this case, the escape sequense should not be copied to dst
 	     * because the current character set is not changed.
 	     */
+
 	    if (state != oldState) {
 		subTablePtr = &dataPtr->subTables[state];
 		if ((dst + subTablePtr->sequenceLen) > dstEnd) {
@@ -2911,11 +3303,12 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 		     * variable because this escape sequence must be written
 		     * in the next conversion.
 		     */
+
 		    state = oldState;
 		    result = TCL_CONVERT_NOSPACE;
 		    break;
 		}
-		memcpy((VOID *) dst, (VOID *) subTablePtr->sequence,
+		memcpy(dst, subTablePtr->sequence,
 			(size_t) subTablePtr->sequenceLen);
 		dst += subTablePtr->sequenceLen;
 	    }
@@ -2936,14 +3329,13 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    }
 	    dst[0] = (char) word;
 	    dst++;
-	} 
+	}
 	src += len;
     }
 
     if ((result == TCL_OK) && (flags & TCL_ENCODING_END)) {
 	unsigned int len = dataPtr->subTables[0].sequenceLen;
 	/*
-	 * [Bug 1516109].
 	 * Certain encodings like iso2022-jp need to write
 	 * an escape sequence after all characters have
 	 * been converted. This logic checks that enough
@@ -2957,18 +3349,16 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
 	    result = TCL_CONVERT_NOSPACE;
 	} else {
 	    if (state) {
-		memcpy((VOID *) dst, (VOID *) dataPtr->subTables[0].sequence,
-			(size_t) len);
+		memcpy(dst, dataPtr->subTables[0].sequence, (size_t) len);
 		dst += len;
 	    }
-	    memcpy((VOID *) dst, (VOID *) dataPtr->final,
-		    (size_t) dataPtr->finalLen);
+	    memcpy(dst, dataPtr->final, (size_t) dataPtr->finalLen);
 	    dst += dataPtr->finalLen;
 	    state &= ~TCL_ENCODING_END;
 	}
     }
 
-    *statePtr = (Tcl_EncodingState) state;
+    *statePtr = (Tcl_EncodingState) INT2PTR(state);
     *srcReadPtr = src - srcStart;
     *dstWrotePtr = dst - dstStart;
     *dstCharsPtr = numChars;
@@ -2980,8 +3370,8 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  *
  * EscapeFreeProc --
  *
- *	This procedure is invoked when an EscapeEncodingData encoding is 
- *	deleted.  It deletes the memory used by the encoding.
+ *	This function is invoked when an EscapeEncodingData encoding is
+ *	deleted. It deletes the memory used by the encoding.
  *
  * Results:
  *	None.
@@ -2993,8 +3383,9 @@ EscapeFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
  */
 
 static void
-EscapeFreeProc(clientData)
-    ClientData clientData;	/* EscapeEncodingData that specifies encoding. */
+EscapeFreeProc(
+    ClientData clientData)	/* EscapeEncodingData that specifies
+				 * encoding. */
 {
     EscapeEncodingData *dataPtr;
     EscapeSubTable *subTablePtr;
@@ -3030,7 +3421,7 @@ EscapeFreeProc(clientData)
  *
  * GetTableEncoding --
  *
- *	Helper function for the EscapeEncodingData conversions.  Gets the
+ *	Helper function for the EscapeEncodingData conversions. Gets the
  *	encoding (of type TextEncodingData) that represents the specified
  *	state.
  *
@@ -3038,36 +3429,34 @@ EscapeFreeProc(clientData)
  *	The return value is the encoding.
  *
  * Side effects:
- *	If the encoding that represents the specified state has not
- *	already been used by this EscapeEncoding, it will be loaded
- *	and cached in the dataPtr.
+ *	If the encoding that represents the specified state has not already
+ *	been used by this EscapeEncoding, it will be loaded and cached in the
+ *	dataPtr.
  *
  *---------------------------------------------------------------------------
  */
 
 static Encoding *
-GetTableEncoding(dataPtr, state)
-    EscapeEncodingData *dataPtr;/* Contains names of encodings. */
-    int state;			/* Index in dataPtr of desired Encoding. */
+GetTableEncoding(
+    EscapeEncodingData *dataPtr,/* Contains names of encodings. */
+    int state)			/* Index in dataPtr of desired Encoding. */
 {
     EscapeSubTable *subTablePtr;
     Encoding *encodingPtr;
-    
+
     subTablePtr = &dataPtr->subTables[state];
     encodingPtr = subTablePtr->encodingPtr;
+
     if (encodingPtr == NULL) {
-	/*
-	 * Now that escape encodings load their sub-encodings first, and
-	 * fail to load if any sub-encodings are missing, this branch should
-	 * never happen.  
-	 */
 	encodingPtr = (Encoding *) Tcl_GetEncoding(NULL, subTablePtr->name);
-	if ((encodingPtr == NULL) 
-		|| (encodingPtr->toUtfProc != TableToUtfProc)) {
-	    panic("EscapeToUtfProc: invalid sub table");
+	if ((encodingPtr == NULL)
+		|| (encodingPtr->toUtfProc != TableToUtfProc
+		&& encodingPtr->toUtfProc != Iso88591ToUtfProc)) {
+	    Tcl_Panic("EscapeToUtfProc: invalid sub table");
 	}
 	subTablePtr->encodingPtr = encodingPtr;
     }
+
     return encodingPtr;
 }
 
@@ -3076,9 +3465,9 @@ GetTableEncoding(dataPtr, state)
  *
  * unilen --
  *
- *	A helper function for the Tcl_ExternalToUtf functions.  This
- *	function is similar to strlen for double-byte characters: it
- *	returns the number of bytes in a 0x0000 terminated string.
+ *	A helper function for the Tcl_ExternalToUtf functions. This function
+ *	is similar to strlen for double-byte characters: it returns the number
+ *	of bytes in a 0x0000 terminated string.
  *
  * Results:
  *	As above.
@@ -3090,8 +3479,8 @@ GetTableEncoding(dataPtr, state)
  */
 
 static size_t
-unilen(src)
-    CONST char *src;
+unilen(
+    const char *src)
 {
     unsigned short *p;
 
@@ -3105,83 +3494,76 @@ unilen(src)
 /*
  *-------------------------------------------------------------------------
  *
- * TclFindEncodings --
+ * InitializeEncodingSearchPath	--
  *
- *	Find and load the encoding file for this operating system.
- *	Before this is called, Tcl makes assumptions about the
- *	native string representation, but the true encoding is not
- *	assured.
+ *	This is the fallback routine that sets the default value of the
+ *	encoding search path if the application has not set one via a call to
+ *	Tcl_SetEncodingSearchPath() by the first time the search path is needed
+ *	to load encoding data.
+ *
+ *	The default encoding search path is produced by taking each directory
+ *	in the library path, appending a subdirectory named "encoding", and if
+ *	the resulting directory exists, adding it to the encoding search path.
  *
  * Results:
- *	Return result of TclpInitLibraryPath, which reports whether the
- *	path is clean (0) or dirty (1) UTF.
+ *	None.
  *
  * Side effects:
- *	Varied, see the respective initialization routines.
+ *	Sets the encoding search path to an initial value.
  *
  *-------------------------------------------------------------------------
  */
 
-static int
-TclFindEncodings(argv0)
-    CONST char *argv0;		/* Name of executable from argv[0] to main()
-				 * in native multi-byte encoding. */
+static void
+InitializeEncodingSearchPath(
+    char **valuePtr,
+    int *lengthPtr,
+    Tcl_Encoding *encodingPtr)
 {
-    int mustCleanUtf = 0;
-
-    if (encodingsInitialized == 0) {
-	/* 
-	 * Double check inside the mutex.  There may be calls
-	 * back into this routine from some of the procedures below.
-	 */
-
-	TclpInitLock();
-	if (encodingsInitialized == 0) {
-	    char *native;
-	    Tcl_Obj *pathPtr;
-	    Tcl_DString libPath, buffer;
-
-	    /*
-	     * Have to set this bit here to avoid deadlock with the
-	     * routines below us that call into TclInitSubsystems.
-	     */
-
-	    encodingsInitialized = 1;
-
-	    native = TclpFindExecutable(argv0);
-	    mustCleanUtf = TclpInitLibraryPath(native);
-
-	    /*
-	     * The library path was set in the TclpInitLibraryPath routine.
-	     * The string set is a dirty UTF string.  To preserve the value
-	     * convert the UTF string back to native before setting the new
-	     * default encoding.
-	     */
-
-	    pathPtr = TclGetLibraryPath();
-	    if ((pathPtr != NULL) && mustCleanUtf) {
-		Tcl_UtfToExternalDString(NULL, Tcl_GetString(pathPtr), -1,
-			&libPath);
-	    }
-
-	    TclpSetInitialEncodings();
-
-	    /*
-	     * Now convert the native string back to UTF.
-	     */
-
-	    if ((pathPtr != NULL) && mustCleanUtf) {
-		Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&libPath), -1,
-			&buffer);
-		pathPtr = Tcl_NewStringObj(Tcl_DStringValue(&buffer), -1);
-		TclSetLibraryPath(pathPtr);
-
-		Tcl_DStringFree(&libPath);
-		Tcl_DStringFree(&buffer);
-	    }
+    char *bytes;
+    int i, numDirs, numBytes;
+    Tcl_Obj *libPath, *encodingObj, *searchPath;
+
+    TclNewLiteralStringObj(encodingObj, "encoding");
+    TclNewObj(searchPath);
+    Tcl_IncrRefCount(encodingObj);
+    Tcl_IncrRefCount(searchPath);
+    libPath = TclGetLibraryPath();
+    Tcl_IncrRefCount(libPath);
+    Tcl_ListObjLength(NULL, libPath, &numDirs);
+
+    for (i = 0; i < numDirs; i++) {
+	Tcl_Obj *directory, *path;
+	Tcl_StatBuf stat;
+
+	Tcl_ListObjIndex(NULL, libPath, i, &directory);
+	path = Tcl_FSJoinToPath(directory, 1, &encodingObj);
+	Tcl_IncrRefCount(path);
+	if ((0 == Tcl_FSStat(path, &stat)) && S_ISDIR(stat.st_mode)) {
+	    Tcl_ListObjAppendElement(NULL, searchPath, path);
 	}
-	TclpInitUnlock();
+	Tcl_DecrRefCount(path);
+    }
+
+    Tcl_DecrRefCount(libPath);
+    Tcl_DecrRefCount(encodingObj);
+    *encodingPtr = libraryPath.encoding;
+    if (*encodingPtr) {
+	((Encoding *)(*encodingPtr))->refCount++;
     }
+    bytes = Tcl_GetStringFromObj(searchPath, &numBytes);
 
-    return mustCleanUtf;
+    *lengthPtr = numBytes;
+    *valuePtr = ckalloc((unsigned int) numBytes + 1);
+    memcpy(*valuePtr, bytes, (size_t) numBytes + 1);
+    Tcl_DecrRefCount(searchPath);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
+
diff --git a/generic/tclEnv.c b/generic/tclEnv.c
index 7108436..f2395e6 100644
--- a/generic/tclEnv.c
+++ b/generic/tclEnv.c
@@ -1,80 +1,79 @@
 /*
  * tclEnv.c --
  *
- *	Tcl support for environment variables, including a setenv
- *	procedure.  This file contains the generic portion of the
- *	environment module.  It is primarily responsible for keeping
- *	the "env" arrays in sync with the system environment variables.
+ *	Tcl support for environment variables, including a setenv function.
+ *	This file contains the generic portion of the environment module. It
+ *	is primarily responsible for keeping the "env" arrays in sync with the
+ *	system environment variables.
  *
  * Copyright (c) 1991-1994 The Regents of the University of California.
  * Copyright (c) 1994-1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
-TCL_DECLARE_MUTEX(envMutex)	/* To serialize access to environ */
+TCL_DECLARE_MUTEX(envMutex)	/* To serialize access to environ. */
 
-static int cacheSize = 0;	/* Number of env strings in environCache. */
-static char **environCache = NULL;
-				/* Array containing all of the environment
+static struct {
+    int cacheSize;		/* Number of env strings in cache. */
+    char **cache;		/* Array containing all of the environment
 				 * strings that Tcl has allocated. */
-
 #ifndef USE_PUTENV
-static char **ourEnviron = NULL;/* Cache of the array that we allocate.
-				 * We need to track this in case another
+    char **ourEnviron;		/* Cache of the array that we allocate. We
+				 * need to track this in case another
 				 * subsystem swaps around the environ array
-				 * like we do.
-				 */
-static int environSize = 0;	/* Non-zero means that the environ array was
+				 * like we do. */
+    int ourEnvironSize;		/* Non-zero means that the environ array was
 				 * malloced and has this many total entries
 				 * allocated to it (not all may be in use at
-				 * once).  Zero means that the environment
+				 * once). Zero means that the environment
 				 * array is in its original static state. */
 #endif
+} env;
 
 /*
- * Declarations for local procedures defined in this file:
+ * Declarations for local functions defined in this file:
  */
 
-static char *		EnvTraceProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, CONST char *name1, 
-			    CONST char *name2, int flags));
-static void		ReplaceString _ANSI_ARGS_((CONST char *oldStr,
-			    char *newStr));
-void			TclSetEnv _ANSI_ARGS_((CONST char *name,
-			    CONST char *value));
-void			TclUnsetEnv _ANSI_ARGS_((CONST char *name));
+static char *		EnvTraceProc(ClientData clientData, Tcl_Interp *interp,
+			    const char *name1, const char *name2, int flags);
+static void		ReplaceString(const char *oldStr, char *newStr);
+MODULE_SCOPE void	TclSetEnv(const char *name, const char *value);
+MODULE_SCOPE void	TclUnsetEnv(const char *name);
+
+#if defined(__CYGWIN__)
+    static void TclCygwinPutenv(char *string);
+#   define putenv TclCygwinPutenv
+#endif
 
 /*
  *----------------------------------------------------------------------
  *
  * TclSetupEnv --
  *
- *	This procedure is invoked for an interpreter to make environment
- *	variables accessible from that interpreter via the "env"
- *	associative array.
+ *	This function is invoked for an interpreter to make environment
+ *	variables accessible from that interpreter via the "env" associative
+ *	array.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The interpreter is added to a list of interpreters managed
- *	by us, so that its view of envariables can be kept consistent
- *	with the view in other interpreters.  If this is the first
- *	call to TclSetupEnv, then additional initialization happens,
- *	such as copying the environment to dynamically-allocated space
- *	for ease of management.
+ *	The interpreter is added to a list of interpreters managed by us, so
+ *	that its view of envariables can be kept consistent with the view in
+ *	other interpreters. If this is the first call to TclSetupEnv, then
+ *	additional initialization happens, such as copying the environment to
+ *	dynamically-allocated space for ease of management.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclSetupEnv(interp)
-    Tcl_Interp *interp;		/* Interpreter whose "env" array is to be
+TclSetupEnv(
+    Tcl_Interp *interp)		/* Interpreter whose "env" array is to be
 				 * managed. */
 {
     Tcl_DString envString;
@@ -82,28 +81,27 @@ TclSetupEnv(interp)
     int i;
 
     /*
-     * Synchronize the values in the environ array with the contents
-     * of the Tcl "env" variable.  To do this:
+     * Synchronize the values in the environ array with the contents of the
+     * Tcl "env" variable. To do this:
      *    1) Remove the trace that fires when the "env" var is unset.
      *    2) Unset the "env" variable.
-     *    3) If there are no environ variables, create an empty "env"
-     *       array.  Otherwise populate the array with current values.
+     *    3) If there are no environ variables, create an empty "env" array.
+     *	     Otherwise populate the array with current values.
      *    4) Add a trace that synchronizes the "env" array.
      */
-    
-    Tcl_UntraceVar2(interp, "env", (char *) NULL,
+
+    Tcl_UntraceVar2(interp, "env", NULL,
 	    TCL_GLOBAL_ONLY | TCL_TRACE_WRITES | TCL_TRACE_UNSETS |
-	    TCL_TRACE_READS | TCL_TRACE_ARRAY,  EnvTraceProc,
-	    (ClientData) NULL);
-    
-    Tcl_UnsetVar2(interp, "env", (char *) NULL, TCL_GLOBAL_ONLY); 
-    
+	    TCL_TRACE_READS | TCL_TRACE_ARRAY, EnvTraceProc, NULL);
+
+    Tcl_UnsetVar2(interp, "env", NULL, TCL_GLOBAL_ONLY);
+
     if (environ[0] == NULL) {
 	Tcl_Obj *varNamePtr;
-	
-	varNamePtr = Tcl_NewStringObj("env", -1);
+
+	TclNewLiteralStringObj(varNamePtr, "env");
 	Tcl_IncrRefCount(varNamePtr);
-	TclArraySet(interp, varNamePtr, NULL);	
+	TclArraySet(interp, varNamePtr, NULL);
 	Tcl_DecrRefCount(varNamePtr);
     } else {
 	Tcl_MutexLock(&envMutex);
@@ -113,23 +111,23 @@ TclSetupEnv(interp)
 	    if (p2 == NULL) {
 		/*
 		 * This condition seem to happen occasionally under some
-		 * versions of Solaris; ignore the entry.
+		 * versions of Solaris, or when encoding accidents swallow the
+		 * '='; ignore the entry.
 		 */
-		
+
 		continue;
 	    }
 	    p2++;
 	    p2[-1] = '\0';
-	    Tcl_SetVar2(interp, "env", p1, p2, TCL_GLOBAL_ONLY);	
+	    Tcl_SetVar2(interp, "env", p1, p2, TCL_GLOBAL_ONLY);
 	    Tcl_DStringFree(&envString);
 	}
 	Tcl_MutexUnlock(&envMutex);
     }
 
-    Tcl_TraceVar2(interp, "env", (char *) NULL,
+    Tcl_TraceVar2(interp, "env", NULL,
 	    TCL_GLOBAL_ONLY | TCL_TRACE_WRITES | TCL_TRACE_UNSETS |
-	    TCL_TRACE_READS | TCL_TRACE_ARRAY,  EnvTraceProc,
-	    (ClientData) NULL);
+	    TCL_TRACE_READS | TCL_TRACE_ARRAY, EnvTraceProc, NULL);
 }
 
 /*
@@ -137,12 +135,12 @@ TclSetupEnv(interp)
  *
  * TclSetEnv --
  *
- *	Set an environment variable, replacing an existing value
- *	or creating a new variable if there doesn't exist a variable
- *	by the given name.  This procedure is intended to be a
- *	stand-in for the  UNIX "setenv" procedure so that applications
- *	using that procedure will interface properly to Tcl.  To make
- *	it a stand-in, the Makefile must define "TclSetEnv" to "setenv".
+ *	Set an environment variable, replacing an existing value or creating a
+ *	new variable if there doesn't exist a variable by the given name. This
+ *	function is intended to be a stand-in for the UNIX "setenv" function
+ *	so that applications using that function will interface properly to
+ *	Tcl. To make it a stand-in, the Makefile must define "TclSetEnv" to
+ *	"setenv".
  *
  * Results:
  *	None.
@@ -154,20 +152,20 @@ TclSetupEnv(interp)
  */
 
 void
-TclSetEnv(name, value)
-    CONST char *name;		/* Name of variable whose value is to be
-				 * set (UTF-8). */
-    CONST char *value;		/* New value for variable (UTF-8). */
+TclSetEnv(
+    const char *name,		/* Name of variable whose value is to be set
+				 * (UTF-8). */
+    const char *value)		/* New value for variable (UTF-8). */
 {
     Tcl_DString envString;
     int index, length, nameLength;
     char *p, *oldValue;
-    CONST char *p2;
+    const char *p2;
 
     /*
-     * Figure out where the entry is going to go.  If the name doesn't
-     * already exist, enlarge the array if necessary to make room.  If the
-     * name exists, free its old entry.
+     * Figure out where the entry is going to go. If the name doesn't already
+     * exist, enlarge the array if necessary to make room. If the name exists,
+     * free its old entry.
      */
 
     Tcl_MutexLock(&envMutex);
@@ -177,40 +175,39 @@ TclSetEnv(name, value)
 #ifndef USE_PUTENV
 	/*
 	 * We need to handle the case where the environment may be changed
-	 * outside our control.  environSize is only valid if the current
+	 * outside our control. ourEnvironSize is only valid if the current
 	 * environment is the one we allocated. [Bug 979640]
 	 */
-	if ((ourEnviron != environ) || ((length + 2) > environSize)) {
-	    char **newEnviron;
-
-	    newEnviron = (char **) ckalloc((unsigned)
-		    ((length + 5) * sizeof(char *)));
-	    memcpy((VOID *) newEnviron, (VOID *) environ,
-		    length*sizeof(char *));
-	    if ((environSize != 0) && (ourEnviron != NULL)) {
-		ckfree((char *) ourEnviron);
+
+	if ((env.ourEnviron != environ) || (length+2 > env.ourEnvironSize)) {
+	    char **newEnviron = (char **)
+		    ckalloc(((unsigned) length + 5) * sizeof(char *));
+
+	    memcpy(newEnviron, environ, length * sizeof(char *));
+	    if ((env.ourEnvironSize != 0) && (env.ourEnviron != NULL)) {
+		ckfree((char *) env.ourEnviron);
 	    }
-	    environ = ourEnviron = newEnviron;
-	    environSize = length + 5;
+	    environ = env.ourEnviron = newEnviron;
+	    env.ourEnvironSize = length + 5;
 	}
 	index = length;
 	environ[index + 1] = NULL;
-#endif
+#endif /* USE_PUTENV */
 	oldValue = NULL;
 	nameLength = strlen(name);
     } else {
-	CONST char *env;
+	const char *env;
 
 	/*
-	 * Compare the new value to the existing value.  If they're
-	 * the same then quit immediately (e.g. don't rewrite the
-	 * value or propagate it to other interpreters).  Otherwise,
-	 * when there are N interpreters there will be N! propagations
-	 * of the same value among the interpreters.
+	 * Compare the new value to the existing value. If they're the same
+	 * then quit immediately (e.g. don't rewrite the value or propagate it
+	 * to other interpreters). Otherwise, when there are N interpreters
+	 * there will be N! propagations of the same value among the
+	 * interpreters.
 	 */
 
 	env = Tcl_ExternalToUtfDString(NULL, environ[index], -1, &envString);
-	if (strcmp(value, (env + length + 1)) == 0) {
+	if (strcmp(value, env + (length + 1)) == 0) {
 	    Tcl_DStringFree(&envString);
 	    Tcl_MutexUnlock(&envMutex);
 	    return;
@@ -222,12 +219,12 @@ TclSetEnv(name, value)
     }
 
     /*
-     * Create a new entry.  Build a complete UTF string that contains
-     * a "name=value" pattern.  Then convert the string to the native
-     * encoding, and set the environ array value.
+     * Create a new entry. Build a complete UTF string that contains a
+     * "name=value" pattern. Then convert the string to the native encoding,
+     * and set the environ array value.
      */
 
-    p = (char *) ckalloc((unsigned) (nameLength + strlen(value) + 2));
+    p = ckalloc((unsigned) nameLength + strlen(value) + 2);
     strcpy(p, name);
     p[nameLength] = '=';
     strcpy(p+nameLength+1, value);
@@ -236,8 +233,8 @@ TclSetEnv(name, value)
     /*
      * Copy the native string to heap memory.
      */
-    
-    p = (char *) ckrealloc(p, (unsigned) (strlen(p2) + 1));
+
+    p = ckrealloc(p, strlen(p2) + 1);
     strcpy(p, p2);
     Tcl_DStringFree(&envString);
 
@@ -250,32 +247,35 @@ TclSetEnv(name, value)
     index = TclpFindVariable(name, &length);
 #else
     environ[index] = p;
-#endif
+#endif /* USE_PUTENV */
 
     /*
-     * Watch out for versions of putenv that copy the string (e.g. VC++).
-     * In this case we need to free the string immediately.  Otherwise
-     * update the string in the cache.
+     * Watch out for versions of putenv that copy the string (e.g. VC++). In
+     * this case we need to free the string immediately. Otherwise update the
+     * string in the cache.
      */
 
     if ((index != -1) && (environ[index] == p)) {
 	ReplaceString(oldValue, p);
 #ifdef HAVE_PUTENV_THAT_COPIES
     } else {
-	/* This putenv() copies instead of taking ownership */
+	/*
+	 * This putenv() copies instead of taking ownership.
+	 */
+
 	ckfree(p);
-#endif
+#endif /* HAVE_PUTENV_THAT_COPIES */
     }
 
     Tcl_MutexUnlock(&envMutex);
-    
+
     if (!strcmp(name, "HOME")) {
-	/* 
-	 * If the user's home directory has changed, we must invalidate
-	 * the filesystem cache, because '~' expansions will now be
-	 * incorrect.
+	/*
+	 * If the user's home directory has changed, we must invalidate the
+	 * filesystem cache, because '~' expansions will now be incorrect.
 	 */
-        Tcl_FSMountsChanged(NULL);
+
+	Tcl_FSMountsChanged(NULL);
     }
 }
 
@@ -284,44 +284,42 @@ TclSetEnv(name, value)
  *
  * Tcl_PutEnv --
  *
- *	Set an environment variable.  Similar to setenv except that
- *	the information is passed in a single string of the form
- *	NAME=value, rather than as separate name strings.  This procedure
- *	is intended to be a stand-in for the  UNIX "putenv" procedure
- *	so that applications using that procedure will interface
- *	properly to Tcl.  To make it a stand-in, the Makefile will
- *	define "Tcl_PutEnv" to "putenv".
+ *	Set an environment variable. Similar to setenv except that the
+ *	information is passed in a single string of the form NAME=value,
+ *	rather than as separate name strings. This function is intended to be
+ *	a stand-in for the UNIX "putenv" function so that applications using
+ *	that function will interface properly to Tcl. To make it a stand-in,
+ *	the Makefile will define "Tcl_PutEnv" to "putenv".
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The environ array gets updated, as do all of the interpreters
- *	that we manage.
+ *	The environ array gets updated, as do all of the interpreters that we
+ *	manage.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_PutEnv(string)
-    CONST char *string;		/* Info about environment variable in the
-				 * form NAME=value. (native) */
+Tcl_PutEnv(
+    const char *assignment)	/* Info about environment variable in the form
+				 * NAME=value. (native) */
 {
-    Tcl_DString nameString;   
-    CONST char *name;
+    Tcl_DString nameString;
+    const char *name;
     char *value;
 
-    if (string == NULL) {
+    if (assignment == NULL) {
 	return 0;
     }
 
     /*
-     * First convert the native string to UTF.  Then separate the
-     * string into name and value parts, and call TclSetEnv to do
-     * all of the real work.
+     * First convert the native string to UTF. Then separate the string into
+     * name and value parts, and call TclSetEnv to do all of the real work.
      */
 
-    name = Tcl_ExternalToUtfDString(NULL, string, -1, &nameString);
+    name = Tcl_ExternalToUtfDString(NULL, assignment, -1, &nameString);
     value = strchr(name, '=');
 
     if ((value != NULL) && (value != name)) {
@@ -338,11 +336,10 @@ Tcl_PutEnv(string)
  *
  * TclUnsetEnv --
  *
- *	Remove an environment variable, updating the "env" arrays
- *	in all interpreters managed by us.  This function is intended
- *	to replace the UNIX "unsetenv" function (but to do this the
- *	Makefile must be modified to redefine "TclUnsetEnv" to
- *	"unsetenv".
+ *	Remove an environment variable, updating the "env" arrays in all
+ *	interpreters managed by us. This function is intended to replace the
+ *	UNIX "unsetenv" function (but to do this the Makefile must be modified
+ *	to redefine "TclUnsetEnv" to "unsetenv".
  *
  * Results:
  *	None.
@@ -354,8 +351,8 @@ Tcl_PutEnv(string)
  */
 
 void
-TclUnsetEnv(name)
-    CONST char *name;		/* Name of variable to remove (UTF-8). */
+TclUnsetEnv(
+    const char *name)		/* Name of variable to remove (UTF-8). */
 {
     char *oldValue;
     int length;
@@ -365,20 +362,21 @@ TclUnsetEnv(name)
     char *string;
 #else
     char **envPtr;
-#endif
+#endif /* USE_PUTENV_FOR_UNSET */
 
     Tcl_MutexLock(&envMutex);
     index = TclpFindVariable(name, &length);
 
     /*
-     * First make sure that the environment variable exists to avoid
-     * doing needless work and to avoid recursion on the unset.
+     * First make sure that the environment variable exists to avoid doing
+     * needless work and to avoid recursion on the unset.
      */
 
     if (index == -1) {
 	Tcl_MutexUnlock(&envMutex);
 	return;
     }
+
     /*
      * Remember the old value so we can free it if Tcl created the string.
      */
@@ -386,8 +384,8 @@ TclUnsetEnv(name)
     oldValue = environ[index];
 
     /*
-     * Update the system environment.  This must be done before we 
-     * update the interpreters or we will recurse.
+     * Update the system environment. This must be done before we update the
+     * interpreters or we will recurse.
      */
 
 #ifdef USE_PUTENV_FOR_UNSET
@@ -395,39 +393,43 @@ TclUnsetEnv(name)
      * For those platforms that support putenv to unset, Linux indicates
      * that no = should be included, and Windows requires it.
      */
-#ifdef WIN32
-    string = ckalloc((unsigned int) length+2);
-    memcpy((VOID *) string, (VOID *) name, (size_t) length);
+
+#if defined(__WIN32__) || defined(__CYGWIN__)
+    string = ckalloc((unsigned) length+2);
+    memcpy(string, name, (size_t) length);
     string[length] = '=';
     string[length+1] = '\0';
 #else
-    string = ckalloc((unsigned int) length+1);
-    memcpy((VOID *) string, (VOID *) name, (size_t) length);
+    string = ckalloc((unsigned) length+1);
+    memcpy(string, name, (size_t) length);
     string[length] = '\0';
-#endif
+#endif /* WIN32 */
 
     Tcl_UtfToExternalDString(NULL, string, -1, &envString);
-    string = ckrealloc(string, (unsigned) (Tcl_DStringLength(&envString)+1));
+    string = ckrealloc(string, (unsigned) Tcl_DStringLength(&envString)+1);
     strcpy(string, Tcl_DStringValue(&envString));
     Tcl_DStringFree(&envString);
 
     putenv(string);
 
     /*
-     * Watch out for versions of putenv that copy the string (e.g. VC++).
-     * In this case we need to free the string immediately.  Otherwise
-     * update the string in the cache.
+     * Watch out for versions of putenv that copy the string (e.g. VC++). In
+     * this case we need to free the string immediately. Otherwise update the
+     * string in the cache.
      */
 
     if (environ[index] == string) {
 	ReplaceString(oldValue, string);
 #ifdef HAVE_PUTENV_THAT_COPIES
     } else {
-	/* This putenv() copies instead of taking ownership */
+	/*
+	 * This putenv() copies instead of taking ownership.
+	 */
+
 	ckfree(string);
-#endif
+#endif /* HAVE_PUTENV_THAT_COPIES */
     }
-#else
+#else /* !USE_PUTENV_FOR_UNSET */
     for (envPtr = environ+index+1; ; envPtr++) {
 	envPtr[-1] = *envPtr;
 	if (*envPtr == NULL) {
@@ -435,7 +437,7 @@ TclUnsetEnv(name)
 	}
     }
     ReplaceString(oldValue, NULL);
-#endif
+#endif /* USE_PUTENV_FOR_UNSET */
 
     Tcl_MutexUnlock(&envMutex);
 }
@@ -449,10 +451,10 @@ TclUnsetEnv(name)
  *
  * Results:
  *	The result is a pointer to a string specifying the value of the
- *	environment variable, or NULL if that environment variable does
- *	not exist.  Storage for the result string is allocated in valuePtr;
- *	the caller must call Tcl_DStringFree() when the result is no
- *	longer needed.
+ *	environment variable, or NULL if that environment variable does not
+ *	exist. Storage for the result string is allocated in valuePtr; the
+ *	caller must call Tcl_DStringFree() when the result is no longer
+ *	needed.
  *
  * Side effects:
  *	None.
@@ -460,23 +462,23 @@ TclUnsetEnv(name)
  *----------------------------------------------------------------------
  */
 
-CONST char *
-TclGetEnv(name, valuePtr)
-    CONST char *name;		/* Name of environment variable to find
+const char *
+TclGetEnv(
+    const char *name,		/* Name of environment variable to find
 				 * (UTF-8). */
-    Tcl_DString *valuePtr;	/* Uninitialized or free DString in which
-				 * the value of the environment variable is
+    Tcl_DString *valuePtr)	/* Uninitialized or free DString in which the
+				 * value of the environment variable is
 				 * stored. */
 {
     int length, index;
-    CONST char *result;
+    const char *result;
 
     Tcl_MutexLock(&envMutex);
     index = TclpFindVariable(name, &length);
     result = NULL;
     if (index != -1) {
 	Tcl_DString envStr;
-	
+
 	result = Tcl_ExternalToUtfDString(NULL, environ[index], -1, &envStr);
 	result += length;
 	if (*result == '=') {
@@ -498,32 +500,31 @@ TclGetEnv(name, valuePtr)
  *
  * EnvTraceProc --
  *
- *	This procedure is invoked whenever an environment variable
- *	is read, modified or deleted.  It propagates the change to the global
- *	"environ" array.
+ *	This function is invoked whenever an environment variable is read,
+ *	modified or deleted. It propagates the change to the global "environ"
+ *	array.
  *
  * Results:
  *	Always returns NULL to indicate success.
  *
  * Side effects:
- *	Environment variable changes get propagated.  If the whole
- *	"env" array is deleted, then we stop managing things for
- *	this interpreter (usually this happens because the whole
- *	interpreter is being deleted).
+ *	Environment variable changes get propagated. If the whole "env" array
+ *	is deleted, then we stop managing things for this interpreter (usually
+ *	this happens because the whole interpreter is being deleted).
  *
  *----------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 static char *
-EnvTraceProc(clientData, interp, name1, name2, flags)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Interpreter whose "env" variable is
-				 * being modified. */
-    CONST char *name1;		/* Better be "env". */
-    CONST char *name2;		/* Name of variable being modified, or NULL
-				 * if whole array is being deleted (UTF-8). */
-    int flags;			/* Indicates what's happening. */
+EnvTraceProc(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Interpreter whose "env" variable is being
+				 * modified. */
+    const char *name1,		/* Better be "env". */
+    const char *name2,		/* Name of variable being modified, or NULL if
+				 * whole array is being deleted (UTF-8). */
+    int flags)			/* Indicates what's happening. */
 {
     /*
      * For array traces, let TclSetupEnv do all the work.
@@ -537,7 +538,7 @@ EnvTraceProc(clientData, interp, name1, name2, flags)
     /*
      * If name2 is NULL, then return and do nothing.
      */
-     
+
     if (name2 == NULL) {
 	return NULL;
     }
@@ -547,8 +548,8 @@ EnvTraceProc(clientData, interp, name1, name2, flags)
      */
 
     if (flags & TCL_TRACE_WRITES) {
-	CONST char *value;
-	
+	const char *value;
+
 	value = Tcl_GetVar2(interp, "env", name2, TCL_GLOBAL_ONLY);
 	TclSetEnv(name2, value);
     }
@@ -559,9 +560,8 @@ EnvTraceProc(clientData, interp, name1, name2, flags)
 
     if (flags & TCL_TRACE_READS) {
 	Tcl_DString valueString;
-	CONST char *value;
+	const char *value = TclGetEnv(name2, &valueString);
 
-	value = TclGetEnv(name2, &valueString);
 	if (value == NULL) {
 	    return "no such variable";
 	}
@@ -584,9 +584,9 @@ EnvTraceProc(clientData, interp, name1, name2, flags)
  *
  * ReplaceString --
  *
- *	Replace one string with another in the environment variable
- *	cache.  The cache keeps track of all of the environment
- *	variables that Tcl has modified so they can be freed later.
+ *	Replace one string with another in the environment variable cache. The
+ *	cache keeps track of all of the environment variables that Tcl has
+ *	modified so they can be freed later.
  *
  * Results:
  *	None.
@@ -598,61 +598,54 @@ EnvTraceProc(clientData, interp, name1, name2, flags)
  */
 
 static void
-ReplaceString(oldStr, newStr)
-    CONST char *oldStr;		/* Old environment string. */
-    char *newStr;		/* New environment string. */
+ReplaceString(
+    const char *oldStr,		/* Old environment string. */
+    char *newStr)		/* New environment string. */
 {
     int i;
-    char **newCache;
 
     /*
-     * Check to see if the old value was allocated by Tcl.  If so,
-     * it needs to be deallocated to avoid memory leaks.  Note that this
-     * algorithm is O(n), not O(1).  This will result in n-squared behavior
-     * if lots of environment changes are being made.
+     * Check to see if the old value was allocated by Tcl. If so, it needs to
+     * be deallocated to avoid memory leaks. Note that this algorithm is O(n),
+     * not O(1). This will result in n-squared behavior if lots of environment
+     * changes are being made.
      */
 
-    for (i = 0; i < cacheSize; i++) {
-	if ((environCache[i] == oldStr) || (environCache[i] == NULL)) {
+    for (i = 0; i < env.cacheSize; i++) {
+	if (env.cache[i]==oldStr || env.cache[i]==NULL) {
 	    break;
 	}
     }
-    if (i < cacheSize) {
+    if (i < env.cacheSize) {
 	/*
 	 * Replace or delete the old value.
 	 */
 
-	if (environCache[i]) {
-	    ckfree(environCache[i]);
+	if (env.cache[i]) {
+	    ckfree(env.cache[i]);
 	}
 
 	if (newStr) {
-	    environCache[i] = newStr;
+	    env.cache[i] = newStr;
 	} else {
-	    for (; i < cacheSize-1; i++) {
-		environCache[i] = environCache[i+1];
+	    for (; i < env.cacheSize-1; i++) {
+		env.cache[i] = env.cache[i+1];
 	    }
-	    environCache[cacheSize-1] = NULL;
+	    env.cache[env.cacheSize-1] = NULL;
 	}
     } else {
-        int allocatedSize = (cacheSize + 5) * sizeof(char *);
-
 	/*
 	 * We need to grow the cache in order to hold the new string.
 	 */
 
-	newCache = (char **) ckalloc((unsigned) allocatedSize);
-        (VOID *) memset(newCache, (int) 0, (size_t) allocatedSize);
+	const int growth = 5;
 
-	if (environCache) {
-	    memcpy((VOID *) newCache, (VOID *) environCache,
-		    (size_t) (cacheSize * sizeof(char*)));
-	    ckfree((char *) environCache);
-	}
-	environCache = newCache;
-	environCache[cacheSize] = newStr;
-	environCache[cacheSize+1] = NULL;
-	cacheSize += 5;
+	env.cache = (char **) ckrealloc((char *) env.cache,
+		(env.cacheSize + growth) * sizeof(char *));
+	env.cache[env.cacheSize] = newStr;
+	(void) memset(env.cache+env.cacheSize+1, (int) 0,
+		(size_t) (growth-1) * sizeof(char*));
+	env.cacheSize += growth;
     }
 }
 
@@ -661,9 +654,9 @@ ReplaceString(oldStr, newStr)
  *
  * TclFinalizeEnvironment --
  *
- *	This function releases any storage allocated by this module
- *	that isn't still in use by the global environment.  Any
- *	strings that are still in the environment will be leaked.
+ *	This function releases any storage allocated by this module that isn't
+ *	still in use by the global environment. Any strings that are still in
+ *	the environment will be leaked.
  *
  * Results:
  *	None.
@@ -675,26 +668,119 @@ ReplaceString(oldStr, newStr)
  */
 
 void
-TclFinalizeEnvironment()
+TclFinalizeEnvironment(void)
 {
     /*
      * For now we just deallocate the cache array and none of the environment
-     * strings.  This may leak more memory that strictly necessary, since some
-     * of the strings may no longer be in the environment.  However,
+     * strings. This may leak more memory that strictly necessary, since some
+     * of the strings may no longer be in the environment. However,
      * determining which ones are ok to delete is n-squared, and is pretty
      * unlikely, so we don't bother.
      */
 
-    if (environCache) {
-	ckfree((char *) environCache);
-	environCache = NULL;
-	cacheSize    = 0;
+    if (env.cache) {
+	ckfree((char *) env.cache);
+	env.cache = NULL;
+	env.cacheSize = 0;
 #ifndef USE_PUTENV
-	environSize  = 0;
+	env.ourEnvironSize = 0;
 #endif
     }
 }
 
+#if defined(__CYGWIN__)
+
+/*
+ * When using cygwin, when an environment variable changes, we need to synch
+ * with both the cygwin environment (in case the application C code calls
+ * fork) and the Windows environment (in case the application TCL code calls
+ * exec, which calls the Windows CreateProcess function).
+ */
+DLLIMPORT extern void __stdcall SetEnvironmentVariableA(const char*, const char *);
+
+static void
+TclCygwinPutenv(
+    char *str)
+{
+    char *name, *value;
+
+    /*
+     * Get the name and value, so that we can change the environment variable
+     * for Windows.
+     */
+
+    name = alloca(strlen(str) + 1);
+    strcpy(name, str);
+    for (value=name ; *value!='=' && *value!='\0' ; ++value) {
+	/* Empty body */
+    }
+    if (*value == '\0') {
+	/* Can't happen. */
+	return;
+    }
+    *value = '\0';
+    ++value;
+    if (*value == '\0') {
+	value = NULL;
+    }
+
+    /*
+     * Set the cygwin environment variable.
+     */
+
+#undef putenv
+    if (value == NULL) {
+	unsetenv(name);
+    } else {
+	putenv(str);
+    }
+
+    /*
+     * Before changing the environment variable in Windows, if this is PATH,
+     * we need to convert the value back to a Windows style path.
+     *
+     * FIXME: The calling program may know it is running under windows, and
+     * may have set the path to a Windows path, or, worse, appended or
+     * prepended a Windows path to PATH.
+     */
+
+    if (strcmp(name, "PATH") != 0) {
+	/*
+	 * If this is Path, eliminate any PATH variable, to prevent any
+	 * confusion.
+	 */
+
+	if (strcmp(name, "Path") == 0) {
+	    SetEnvironmentVariableA("PATH", NULL);
+	    unsetenv("PATH");
+	}
+
+	SetEnvironmentVariableA(name, value);
+    } else {
+	char *buf;
+
+	/*
+	 * Eliminate any Path variable, to prevent any confusion.
+	 */
+
+	SetEnvironmentVariableA("Path", NULL);
+	unsetenv("Path");
+
+	if (value == NULL) {
+	    buf = NULL;
+	} else {
+	    int size;
+
+	    size = cygwin_conv_path_list(0, value, NULL, 0);
+	    buf = alloca(size + 1);
+	    cygwin_conv_path_list(0, value, buf, size);
+	}
+
+	SetEnvironmentVariableA(name, buf);
+    }
+}
+#endif /* __CYGWIN__ */
+
 /*
  * Local Variables:
  * mode: c
diff --git a/generic/tclEvent.c b/generic/tclEvent.c
index 06b3a4c..7daa7bb 100644
--- a/generic/tclEvent.c
+++ b/generic/tclEvent.c
@@ -1,50 +1,45 @@
-/* 
+/*
  * tclEvent.c --
  *
  *	This file implements some general event related interfaces including
- *	background errors, exit handlers, and the "vwait" and "update"
- *	command procedures. 
+ *	background errors, exit handlers, and the "vwait" and "update" command
+ *	functions.
  *
  * Copyright (c) 1990-1994 The Regents of the University of California.
  * Copyright (c) 1994-1998 Sun Microsystems, Inc.
+ * Copyright (c) 2004 by Zoran Vasiljevic.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * The data structure below is used to report background errors.  One
- * such structure is allocated for each error;  it holds information
- * about the interpreter and the error until bgerror can be invoked
- * later as an idle handler.
+ * The data structure below is used to report background errors. One such
+ * structure is allocated for each error; it holds information about the
+ * interpreter and the error until an idle handler command can be invoked.
  */
 
 typedef struct BgError {
-    Tcl_Interp *interp;		/* Interpreter in which error occurred.  NULL
-				 * means this error report has been cancelled
-				 * (a previous report generated a break). */
-    char *errorMsg;		/* Copy of the error message (the interp's
-				 * result when the error occurred).
-				 * Malloc-ed. */
-    char *errorInfo;		/* Value of the errorInfo variable
-				 * (malloc-ed). */
-    char *errorCode;		/* Value of the errorCode variable
-				 * (malloc-ed). */
-    struct BgError *nextPtr;	/* Next in list of all pending error
-				 * reports for this interpreter, or NULL
-				 * for end of list. */
+    Tcl_Obj *errorMsg;		/* Copy of the error message (the interp's
+				 * result when the error occurred). */
+    Tcl_Obj *returnOpts;	/* Active return options when the error
+				 * occurred */
+    struct BgError *nextPtr;	/* Next in list of all pending error reports
+				 * for this interpreter, or NULL for end of
+				 * list. */
 } BgError;
 
 /*
- * One of the structures below is associated with the "tclBgError"
- * assoc data for each interpreter.  It keeps track of the head and
- * tail of the list of pending background errors for the interpreter.
+ * One of the structures below is associated with the "tclBgError" assoc data
+ * for each interpreter. It keeps track of the head and tail of the list of
+ * pending background errors for the interpreter.
  */
 
 typedef struct ErrAssocData {
+    Tcl_Interp *interp;		/* Interpreter in which error occurred. */
+    Tcl_Obj *cmdPrefix;		/* First word(s) of the handler command */
     BgError *firstBgPtr;	/* First in list of all background errors
 				 * waiting to be processed for this
 				 * interpreter (NULL if none). */
@@ -59,16 +54,15 @@ typedef struct ErrAssocData {
  */
 
 typedef struct ExitHandler {
-    Tcl_ExitProc *proc;		/* Procedure to call when process exits. */
+    Tcl_ExitProc *proc;		/* Function to call when process exits. */
     ClientData clientData;	/* One word of information to pass to proc. */
-    struct ExitHandler *nextPtr;/* Next in list of all exit handlers for
-				 * this application, or NULL for end of list. */
+    struct ExitHandler *nextPtr;/* Next in list of all exit handlers for this
+				 * application, or NULL for end of list. */
 } ExitHandler;
 
 /*
- * There is both per-process and per-thread exit handlers.
- * The first list is controlled by a mutex.  The other is in
- * thread local storage.
+ * There is both per-process and per-thread exit handlers. The first list is
+ * controlled by a mutex. The other is in thread local storage.
  */
 
 static ExitHandler *firstExitPtr = NULL;
@@ -81,128 +75,96 @@ TCL_DECLARE_MUTEX(exitMutex)
 
 /*
  * This variable is set to 1 when Tcl_Finalize is called, and at the end of
- * its work, it is reset to 0. The variable is checked by TclInExit() to
- * allow different behavior for exit-time processing, e.g. in closing of
- * files and pipes.
+ * its work, it is reset to 0. The variable is checked by TclInExit() to allow
+ * different behavior for exit-time processing, e.g. in closing of files and
+ * pipes.
  */
 
 static int inFinalize = 0;
 static int subsystemsInitialized = 0;
 
-typedef struct ThreadSpecificData {
-    ExitHandler *firstExitPtr;  /* First in list of all exit handlers for
-				 * this thread. */
-    int inExit;			/* True when this thread is exiting. This
-				 * is used as a hack to decide to close
-				 * the standard channels. */
-    Tcl_Obj *tclLibraryPath;	/* Path(s) to the Tcl library */
-} ThreadSpecificData;
-static Tcl_ThreadDataKey dataKey;
-
 /*
- * Common string for the library path for sharing across threads.
- * This is ckalloc'd and cleared in Tcl_Finalize.
+ * This variable contains the application wide exit handler. It will be
+ * called by Tcl_Exit instead of the C-runtime exit if this variable is set
+ * to a non-NULL value.
  */
-static char *tclLibraryPathStr = NULL;
 
+static Tcl_ExitProc *appExitPtr = NULL;
 
-#ifdef TCL_THREADS
+typedef struct ThreadSpecificData {
+    ExitHandler *firstExitPtr;	/* First in list of all exit handlers for this
+				 * thread. */
+    int inExit;			/* True when this thread is exiting. This is
+				 * used as a hack to decide to close the
+				 * standard channels. */
+} ThreadSpecificData;
+static Tcl_ThreadDataKey dataKey;
 
+#ifdef TCL_THREADS
 typedef struct {
     Tcl_ThreadCreateProc *proc;	/* Main() function of the thread */
     ClientData clientData;	/* The one argument to Main() */
 } ThreadClientData;
-static Tcl_ThreadCreateType NewThreadProc _ANSI_ARGS_((
-           ClientData clientData));
-#endif
+static Tcl_ThreadCreateType NewThreadProc(ClientData clientData);
+#endif /* TCL_THREADS */
 
 /*
- * Prototypes for procedures referenced only in this file:
+ * Prototypes for functions referenced only in this file:
  */
 
-static void		BgErrorDeleteProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp));
-static void		HandleBgErrors _ANSI_ARGS_((ClientData clientData));
-static char *		VwaitVarProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, CONST char *name1, 
-			    CONST char *name2, int flags));
+static void		BgErrorDeleteProc(ClientData clientData,
+			    Tcl_Interp *interp);
+static void		HandleBgErrors(ClientData clientData);
+static char *		VwaitVarProc(ClientData clientData, Tcl_Interp *interp,
+			    CONST char *name1, CONST char *name2, int flags);
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_BackgroundError --
  *
- *	This procedure is invoked to handle errors that occur in Tcl
- *	commands that are invoked in "background" (e.g. from event or
- *	timer bindings).
+ *	This function is invoked to handle errors that occur in Tcl commands
+ *	that are invoked in "background" (e.g. from event or timer bindings).
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The command "bgerror" is invoked later as an idle handler to
- *	process the error, passing it the error message.  If that fails,
- *	then an error message is output on stderr.
+ *	A handler command is invoked later as an idle handler to process the
+ *	error, passing it the interp result and return options.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_BackgroundError(interp)
-    Tcl_Interp *interp;		/* Interpreter in which an error has
+Tcl_BackgroundError(
+    Tcl_Interp *interp)		/* Interpreter in which an error has
+				 * occurred. */
+{
+    TclBackgroundException(interp, TCL_ERROR);
+}
+void
+TclBackgroundException(
+    Tcl_Interp *interp,		/* Interpreter in which an exception has
 				 * occurred. */
+    int code)			/* The exception code value */
 {
     BgError *errPtr;
-    CONST char *errResult, *varValue;
     ErrAssocData *assocPtr;
-    int length;
 
-    /*
-     * The Tcl_AddErrorInfo call below (with an empty string) ensures that
-     * errorInfo gets properly set.  It's needed in cases where the error
-     * came from a utility procedure like Tcl_GetVar instead of Tcl_Eval;
-     * in these cases errorInfo still won't have been set when this
-     * procedure is called.
-     */
-
-    Tcl_AddErrorInfo(interp, "");
+    if (code == TCL_OK) {
+	return;
+    }
 
-    errResult = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &length);
-	
     errPtr = (BgError *) ckalloc(sizeof(BgError));
-    errPtr->interp = interp;
-    errPtr->errorMsg = (char *) ckalloc((unsigned) (length + 1));
-    memcpy(errPtr->errorMsg, errResult, (size_t) (length + 1));
-    varValue = Tcl_GetVar(interp, "errorInfo", TCL_GLOBAL_ONLY);
-    if (varValue == NULL) {
-	varValue = errPtr->errorMsg;
-    }
-    errPtr->errorInfo = (char *) ckalloc((unsigned) (strlen(varValue) + 1));
-    strcpy(errPtr->errorInfo, varValue);
-    varValue = Tcl_GetVar(interp, "errorCode", TCL_GLOBAL_ONLY);
-    if (varValue == NULL) {
-	varValue = "";
-    }
-    errPtr->errorCode = (char *) ckalloc((unsigned) (strlen(varValue) + 1));
-    strcpy(errPtr->errorCode, varValue);
+    errPtr->errorMsg = Tcl_GetObjResult(interp);
+    Tcl_IncrRefCount(errPtr->errorMsg);
+    errPtr->returnOpts = Tcl_GetReturnOptions(interp, code);
+    Tcl_IncrRefCount(errPtr->returnOpts);
     errPtr->nextPtr = NULL;
 
-    assocPtr = (ErrAssocData *) Tcl_GetAssocData(interp, "tclBgError",
-	    (Tcl_InterpDeleteProc **) NULL);
-    if (assocPtr == NULL) {
-
-	/*
-	 * This is the first time a background error has occurred in
-	 * this interpreter.  Create associated data to keep track of
-	 * pending error reports.
-	 */
-
-	assocPtr = (ErrAssocData *) ckalloc(sizeof(ErrAssocData));
-	assocPtr->firstBgPtr = NULL;
-	assocPtr->lastBgPtr = NULL;
-	Tcl_SetAssocData(interp, "tclBgError", BgErrorDeleteProc,
-		(ClientData) assocPtr);
-    }
+    (void) TclGetBgErrorHandler(interp);
+    assocPtr = (ErrAssocData *) Tcl_GetAssocData(interp, "tclBgError", NULL);
     if (assocPtr->firstBgPtr == NULL) {
 	assocPtr->firstBgPtr = errPtr;
 	Tcl_DoWhenIdle(HandleBgErrors, (ClientData) assocPtr);
@@ -218,145 +180,383 @@ Tcl_BackgroundError(interp)
  *
  * HandleBgErrors --
  *
- *	This procedure is invoked as an idle handler to process all of
- *	the accumulated background errors.
+ *	This function is invoked as an idle handler to process all of the
+ *	accumulated background errors.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Depends on what actions "bgerror" takes for the errors.
+ *	Depends on what actions the handler command takes for the errors.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-HandleBgErrors(clientData)
-    ClientData clientData;	/* Pointer to ErrAssocData structure. */
+HandleBgErrors(
+    ClientData clientData)	/* Pointer to ErrAssocData structure. */
 {
-    Tcl_Interp *interp;
-    CONST char *argv[2];
-    int code;
-    BgError *errPtr;
     ErrAssocData *assocPtr = (ErrAssocData *) clientData;
-    Tcl_Channel errChannel;
+    Tcl_Interp *interp = assocPtr->interp;
+    BgError *errPtr;
+
+    /*
+     * Not bothering to save/restore the interp state. Assume that any code
+     * that has interp state it needs to keep will make its own
+     * Tcl_SaveInterpState call before calling something like Tcl_DoOneEvent()
+     * that could lead us here.
+     */
 
     Tcl_Preserve((ClientData) assocPtr);
-    
+    Tcl_Preserve((ClientData) interp);
     while (assocPtr->firstBgPtr != NULL) {
-	interp = assocPtr->firstBgPtr->interp;
-	if (interp == NULL) {
-	    goto doneWithInterp;
-	}
+	int code, prefixObjc;
+	Tcl_Obj **prefixObjv, **tempObjv;
 
 	/*
-	 * Restore important state variables to what they were at
-	 * the time the error occurred.
+	 * Note we copy the handler command prefix each pass through, so
+	 * we do support one handler setting another handler.
 	 */
 
-	Tcl_SetVar(interp, "errorInfo", assocPtr->firstBgPtr->errorInfo,
-		TCL_GLOBAL_ONLY);
-	Tcl_SetVar(interp, "errorCode", assocPtr->firstBgPtr->errorCode,
-		TCL_GLOBAL_ONLY);
+	Tcl_Obj *copyObj = TclListObjCopy(NULL, assocPtr->cmdPrefix);
+
+	errPtr = assocPtr->firstBgPtr;
+
+	Tcl_ListObjGetElements(NULL, copyObj, &prefixObjc, &prefixObjv);
+	tempObjv = (Tcl_Obj **) ckalloc((prefixObjc+2)*sizeof(Tcl_Obj *));
+	memcpy(tempObjv, prefixObjv, prefixObjc*sizeof(Tcl_Obj *));
+	tempObjv[prefixObjc] = errPtr->errorMsg;
+	tempObjv[prefixObjc+1] = errPtr->returnOpts;
+	Tcl_AllowExceptions(interp);
+	code = Tcl_EvalObjv(interp, prefixObjc+2, tempObjv, TCL_EVAL_GLOBAL);
 
 	/*
-	 * Create and invoke the bgerror command.
+	 * Discard the command and the information about the error report.
 	 */
 
-	argv[0] = "bgerror";
-	argv[1] = assocPtr->firstBgPtr->errorMsg;
-	
-	Tcl_AllowExceptions(interp);
-        Tcl_Preserve((ClientData) interp);
-	code = TclGlobalInvoke(interp, 2, argv, 0);
-	if (code == TCL_ERROR) {
-
-            /*
-             * If the interpreter is safe, we look for a hidden command
-             * named "bgerror" and call that with the error information.
-             * Otherwise, simply ignore the error. The rationale is that
-             * this could be an error caused by a malicious applet trying
-             * to cause an infinite barrage of error messages. The hidden
-             * "bgerror" command can be used by a security policy to
-             * interpose on such attacks and e.g. kill the applet after a
-             * few attempts.
-             */
-
-            if (Tcl_IsSafe(interp)) {
-		Tcl_SavedResult save;
-		
-		Tcl_SaveResult(interp, &save);
-                TclGlobalInvoke(interp, 2, argv, TCL_INVOKE_HIDDEN);
-		Tcl_RestoreResult(interp, &save);
-
-                goto doneWithInterp;
-            } 
-
-            /*
-             * We have to get the error output channel at the latest possible
-             * time, because the eval (above) might have changed the channel.
-             */
-            
-            errChannel = Tcl_GetStdChannel(TCL_STDERR);
-            if (errChannel != (Tcl_Channel) NULL) {
-		char *string;
-		int len;
-
-		string = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &len);
-		if (Tcl_FindCommand(interp, "bgerror", NULL, TCL_GLOBAL_ONLY) == NULL) {
-                    Tcl_WriteChars(errChannel, assocPtr->firstBgPtr->errorInfo, -1);
-                    Tcl_WriteChars(errChannel, "\n", -1);
-                } else {
-                    Tcl_WriteChars(errChannel,
-                            "bgerror failed to handle background error.\n",
-                            -1);
-                    Tcl_WriteChars(errChannel, "    Original error: ", -1);
-                    Tcl_WriteChars(errChannel, assocPtr->firstBgPtr->errorMsg,
-                            -1);
-                    Tcl_WriteChars(errChannel, "\n", -1);
-                    Tcl_WriteChars(errChannel, "    Error in bgerror: ", -1);
-                    Tcl_WriteChars(errChannel, string, len);
-                    Tcl_WriteChars(errChannel, "\n", -1);
-                }
-                Tcl_Flush(errChannel);
-            }
-	} else if (code == TCL_BREAK) {
+	Tcl_DecrRefCount(copyObj);
+	Tcl_DecrRefCount(errPtr->errorMsg);
+	Tcl_DecrRefCount(errPtr->returnOpts);
+	assocPtr->firstBgPtr = errPtr->nextPtr;
+	ckfree((char *) errPtr);
+	ckfree((char *) tempObjv);
 
+	if (code == TCL_BREAK) {
 	    /*
 	     * Break means cancel any remaining error reports for this
 	     * interpreter.
 	     */
 
-	    for (errPtr = assocPtr->firstBgPtr; errPtr != NULL;
-		    errPtr = errPtr->nextPtr) {
-		if (errPtr->interp == interp) {
-		    errPtr->interp = NULL;
+	    while (assocPtr->firstBgPtr != NULL) {
+		errPtr = assocPtr->firstBgPtr;
+		assocPtr->firstBgPtr = errPtr->nextPtr;
+		Tcl_DecrRefCount(errPtr->errorMsg);
+		Tcl_DecrRefCount(errPtr->returnOpts);
+		ckfree((char *) errPtr);
+	    }
+	} else if ((code == TCL_ERROR) && !Tcl_IsSafe(interp)) {
+	    Tcl_Channel errChannel = Tcl_GetStdChannel(TCL_STDERR);
+
+	    if (errChannel != (Tcl_Channel) NULL) {
+		Tcl_Obj *options = Tcl_GetReturnOptions(interp, code);
+		Tcl_Obj *keyPtr, *valuePtr;
+
+		TclNewLiteralStringObj(keyPtr, "-errorinfo");
+		Tcl_IncrRefCount(keyPtr);
+		Tcl_DictObjGet(NULL, options, keyPtr, &valuePtr);
+		Tcl_DecrRefCount(keyPtr);
+
+		Tcl_WriteChars(errChannel,
+			"error in background error handler:\n", -1);
+		if (valuePtr) {
+		    Tcl_WriteObj(errChannel, valuePtr);
+		} else {
+		    Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
 		}
+		Tcl_WriteChars(errChannel, "\n", 1);
+		Tcl_Flush(errChannel);
+		Tcl_DecrRefCount(options);
 	    }
 	}
+    }
+    assocPtr->lastBgPtr = NULL;
+    Tcl_Release((ClientData) interp);
+    Tcl_Release((ClientData) assocPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclDefaultBgErrorHandlerObjCmd --
+ *
+ *	This function is invoked to process the "::tcl::Bgerror" Tcl command.
+ *	It is the default handler command registered with [interp bgerror] for
+ *	the sake of compatibility with older Tcl releases.
+ *
+ * Results:
+ *	A standard Tcl object result.
+ *
+ * Side effects:
+ *	Depends on what actions the "bgerror" command takes for the errors.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclDefaultBgErrorHandlerObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
+{
+    Tcl_Obj *keyPtr, *valuePtr;
+    Tcl_Obj *tempObjv[2];
+    int code, level;
+    Tcl_InterpState saved;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "msg options");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Check for a valid return options dictionary.
+     */
+
+    TclNewLiteralStringObj(keyPtr, "-level");
+    Tcl_IncrRefCount(keyPtr);
+    Tcl_DictObjGet(NULL, objv[2], keyPtr, &valuePtr);
+    Tcl_DecrRefCount(keyPtr);
+    if (valuePtr == NULL) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		"missing return option \"-level\"", -1));
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIntFromObj(interp, valuePtr, &level) == TCL_ERROR) {
+	return TCL_ERROR;
+    }
+    TclNewLiteralStringObj(keyPtr, "-code");
+    Tcl_IncrRefCount(keyPtr);
+    Tcl_DictObjGet(NULL, objv[2], keyPtr, &valuePtr);
+    Tcl_DecrRefCount(keyPtr);
+    if (valuePtr == NULL) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		"missing return option \"-code\"", -1));
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIntFromObj(interp, valuePtr, &code) == TCL_ERROR) {
+	return TCL_ERROR;
+    }
 
+    if (level != 0) {
+	/* We're handling a TCL_RETURN exception */
+	code = TCL_RETURN;
+    }
+    if (code == TCL_OK) {
 	/*
-	 * Discard the command and the information about the error report.
+	 * Somehow we got to exception handling with no exception.
+	 * (Pass TCL_OK to TclBackgroundException()?)
+	 * Just return without doing anything.
 	 */
+	return TCL_OK;
+    }
+
+    /* Construct the bgerror command */
+    TclNewLiteralStringObj(tempObjv[0], "bgerror");
+    Tcl_IncrRefCount(tempObjv[0]);
+
+    /*
+     * Determine error message argument.  Check the return options in case
+     * a non-error exception brought us here.
+     */
+
+    switch (code) {
+    case TCL_ERROR:
+	tempObjv[1] = objv[1];
+	break;
+    case TCL_BREAK:
+	TclNewLiteralStringObj(tempObjv[1],
+		"invoked \"break\" outside of a loop");
+	break;
+    case TCL_CONTINUE:
+	TclNewLiteralStringObj(tempObjv[1],
+		"invoked \"continue\" outside of a loop");
+	break;
+    default:
+	tempObjv[1] = Tcl_ObjPrintf("command returned bad code: %d", code);
+	break;
+    }
+    Tcl_IncrRefCount(tempObjv[1]);
+
+    if (code != TCL_ERROR) {
+	Tcl_SetObjResult(interp, tempObjv[1]);
+    }
 
-doneWithInterp:
+    TclNewLiteralStringObj(keyPtr, "-errorcode");
+    Tcl_IncrRefCount(keyPtr);
+    Tcl_DictObjGet(NULL, objv[2], keyPtr, &valuePtr);
+    Tcl_DecrRefCount(keyPtr);
+    if (valuePtr) {
+	Tcl_SetObjErrorCode(interp, valuePtr);
+    }
+
+    TclNewLiteralStringObj(keyPtr, "-errorinfo");
+    Tcl_IncrRefCount(keyPtr);
+    Tcl_DictObjGet(NULL, objv[2], keyPtr, &valuePtr);
+    Tcl_DecrRefCount(keyPtr);
+    if (valuePtr) {
+	Tcl_AppendObjToErrorInfo(interp, valuePtr);
+    }
+
+    if (code == TCL_ERROR) {
+	Tcl_SetObjResult(interp, tempObjv[1]);
+    }
+
+    /*
+     * Save interpreter state so we can restore it if multiple handler
+     * attempts are needed.
+     */
+
+    saved = Tcl_SaveInterpState(interp, code);
+    
+    /* Invoke the bgerror command. */
+    Tcl_AllowExceptions(interp);
+    code = Tcl_EvalObjv(interp, 2, tempObjv, TCL_EVAL_GLOBAL);
+    if (code == TCL_ERROR) {
+	/*
+	 * If the interpreter is safe, we look for a hidden command named
+	 * "bgerror" and call that with the error information. Otherwise,
+	 * simply ignore the error. The rationale is that this could be an
+	 * error caused by a malicious applet trying to cause an infinite
+	 * barrage of error messages. The hidden "bgerror" command can be used
+	 * by a security policy to interpose on such attacks and e.g. kill the
+	 * applet after a few attempts.
+	 */
 
-	if (assocPtr->firstBgPtr) {
-	    ckfree(assocPtr->firstBgPtr->errorMsg);
-	    ckfree(assocPtr->firstBgPtr->errorInfo);
-	    ckfree(assocPtr->firstBgPtr->errorCode);
-	    errPtr = assocPtr->firstBgPtr->nextPtr;
-	    ckfree((char *) assocPtr->firstBgPtr);
-	    assocPtr->firstBgPtr = errPtr;
+	if (Tcl_IsSafe(interp)) {
+	    Tcl_RestoreInterpState(interp, saved);
+	    TclObjInvoke(interp, 2, tempObjv, TCL_INVOKE_HIDDEN);
+	} else {
+	    Tcl_Channel errChannel = Tcl_GetStdChannel(TCL_STDERR);
+	    if (errChannel != (Tcl_Channel) NULL) {
+		Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
+
+		Tcl_IncrRefCount(resultPtr);
+		if (Tcl_FindCommand(interp, "bgerror", NULL,
+			TCL_GLOBAL_ONLY) == NULL) {
+		    Tcl_RestoreInterpState(interp, saved);
+		    Tcl_WriteObj(errChannel, Tcl_GetVar2Ex(interp,
+			    "errorInfo", NULL, TCL_GLOBAL_ONLY));
+		    Tcl_WriteChars(errChannel, "\n", -1);
+		} else {
+		    Tcl_DiscardInterpState(saved);
+		    Tcl_WriteChars(errChannel,
+			    "bgerror failed to handle background error.\n",-1);
+		    Tcl_WriteChars(errChannel, "    Original error: ", -1);
+		    Tcl_WriteObj(errChannel, tempObjv[1]);
+		    Tcl_WriteChars(errChannel, "\n", -1);
+		    Tcl_WriteChars(errChannel, "    Error in bgerror: ", -1);
+		    Tcl_WriteObj(errChannel, resultPtr);
+		    Tcl_WriteChars(errChannel, "\n", -1);
+		}
+		Tcl_DecrRefCount(resultPtr);
+		Tcl_Flush(errChannel);
+	    } else {
+		Tcl_DiscardInterpState(saved);
+	    }
 	}
-        
-        if (interp != NULL) {
-            Tcl_Release((ClientData) interp);
-        }
+	code = TCL_OK;
+    } else {
+	Tcl_DiscardInterpState(saved);
     }
-    assocPtr->lastBgPtr = NULL;
 
-    Tcl_Release((ClientData) assocPtr);
+    Tcl_DecrRefCount(tempObjv[0]);
+    Tcl_DecrRefCount(tempObjv[1]);
+    Tcl_ResetResult(interp);
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetBgErrorHandler --
+ *
+ *	This function sets the command prefix to be used to handle background
+ *	errors in interp.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Error handler is registered.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclSetBgErrorHandler(
+    Tcl_Interp *interp,
+    Tcl_Obj *cmdPrefix)
+{
+    ErrAssocData *assocPtr = (ErrAssocData *)
+	    Tcl_GetAssocData(interp, "tclBgError", NULL);
+
+    if (cmdPrefix == NULL) {
+	Tcl_Panic("TclSetBgErrorHandler: NULL cmdPrefix argument");
+    }
+    if (assocPtr == NULL) {
+	/*
+	 * First access: initialize.
+	 */
+
+	assocPtr = (ErrAssocData *) ckalloc(sizeof(ErrAssocData));
+	assocPtr->interp = interp;
+	assocPtr->cmdPrefix = NULL;
+	assocPtr->firstBgPtr = NULL;
+	assocPtr->lastBgPtr = NULL;
+	Tcl_SetAssocData(interp, "tclBgError", BgErrorDeleteProc,
+		(ClientData) assocPtr);
+    }
+    if (assocPtr->cmdPrefix) {
+	Tcl_DecrRefCount(assocPtr->cmdPrefix);
+    }
+    assocPtr->cmdPrefix = cmdPrefix;
+    Tcl_IncrRefCount(assocPtr->cmdPrefix);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetBgErrorHandler --
+ *
+ *	This function retrieves the command prefix currently used to handle
+ *	background errors in interp.
+ *
+ * Results:
+ *	A (Tcl_Obj *) to a list of words (command prefix).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclGetBgErrorHandler(
+    Tcl_Interp *interp)
+{
+    ErrAssocData *assocPtr = (ErrAssocData *)
+	    Tcl_GetAssocData(interp, "tclBgError", NULL);
+
+    if (assocPtr == NULL) {
+	Tcl_Obj *bgerrorObj;
+
+	TclNewLiteralStringObj(bgerrorObj, "::tcl::Bgerror");
+	TclSetBgErrorHandler(interp, bgerrorObj);
+	assocPtr = (ErrAssocData *)
+		Tcl_GetAssocData(interp, "tclBgError", NULL);
+    }
+    return assocPtr->cmdPrefix;
 }
 
 /*
@@ -364,25 +564,24 @@ doneWithInterp:
  *
  * BgErrorDeleteProc --
  *
- *	This procedure is associated with the "tclBgError" assoc data
- *	for an interpreter;  it is invoked when the interpreter is
- *	deleted in order to free the information assoicated with any
- *	pending error reports.
+ *	This function is associated with the "tclBgError" assoc data for an
+ *	interpreter; it is invoked when the interpreter is deleted in order to
+ *	free the information assoicated with any pending error reports.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Background error information is freed: if there were any
- *	pending error reports, they are cancelled.
+ *	Background error information is freed: if there were any pending error
+ *	reports, they are cancelled.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-BgErrorDeleteProc(clientData, interp)
-    ClientData clientData;	/* Pointer to ErrAssocData structure. */
-    Tcl_Interp *interp;		/* Interpreter being deleted. */
+BgErrorDeleteProc(
+    ClientData clientData,	/* Pointer to ErrAssocData structure. */
+    Tcl_Interp *interp)		/* Interpreter being deleted. */
 {
     ErrAssocData *assocPtr = (ErrAssocData *) clientData;
     BgError *errPtr;
@@ -390,12 +589,12 @@ BgErrorDeleteProc(clientData, interp)
     while (assocPtr->firstBgPtr != NULL) {
 	errPtr = assocPtr->firstBgPtr;
 	assocPtr->firstBgPtr = errPtr->nextPtr;
-	ckfree(errPtr->errorMsg);
-	ckfree(errPtr->errorInfo);
-	ckfree(errPtr->errorCode);
+	Tcl_DecrRefCount(errPtr->errorMsg);
+	Tcl_DecrRefCount(errPtr->returnOpts);
 	ckfree((char *) errPtr);
     }
     Tcl_CancelIdleCall(HandleBgErrors, (ClientData) assocPtr);
+    Tcl_DecrRefCount(assocPtr->cmdPrefix);
     Tcl_EventuallyFree((ClientData) assocPtr, TCL_DYNAMIC);
 }
 
@@ -404,23 +603,23 @@ BgErrorDeleteProc(clientData, interp)
  *
  * Tcl_CreateExitHandler --
  *
- *	Arrange for a given procedure to be invoked just before the
- *	application exits.
+ *	Arrange for a given function to be invoked just before the application
+ *	exits.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Proc will be invoked with clientData as argument when the
- *	application exits.
+ *	Proc will be invoked with clientData as argument when the application
+ *	exits.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_CreateExitHandler(proc, clientData)
-    Tcl_ExitProc *proc;		/* Procedure to invoke. */
-    ClientData clientData;	/* Arbitrary value to pass to proc. */
+Tcl_CreateExitHandler(
+    Tcl_ExitProc *proc,		/* Function to invoke. */
+    ClientData clientData)	/* Arbitrary value to pass to proc. */
 {
     ExitHandler *exitPtr;
 
@@ -471,24 +670,23 @@ TclCreateLateExitHandler(
  *
  * Tcl_DeleteExitHandler --
  *
- *	This procedure cancels an existing exit handler matching proc
- *	and clientData, if such a handler exits.
+ *	This function cancels an existing exit handler matching proc and
+ *	clientData, if such a handler exits.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If there is an exit handler corresponding to proc and clientData
- *	then it is cancelled;  if no such handler exists then nothing
- *	happens.
+ *	If there is an exit handler corresponding to proc and clientData then
+ *	it is cancelled; if no such handler exists then nothing happens.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteExitHandler(proc, clientData)
-    Tcl_ExitProc *proc;		/* Procedure that was previously registered. */
-    ClientData clientData;	/* Arbitrary value to pass to proc. */
+Tcl_DeleteExitHandler(
+    Tcl_ExitProc *proc,		/* Function that was previously registered. */
+    ClientData clientData)	/* Arbitrary value to pass to proc. */
 {
     ExitHandler *exitPtr, *prevPtr;
 
@@ -558,23 +756,23 @@ TclDeleteLateExitHandler(
  *
  * Tcl_CreateThreadExitHandler --
  *
- *	Arrange for a given procedure to be invoked just before the
- *	current thread exits.
+ *	Arrange for a given function to be invoked just before the current
+ *	thread exits.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Proc will be invoked with clientData as argument when the
- *	application exits.
+ *	Proc will be invoked with clientData as argument when the application
+ *	exits.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_CreateThreadExitHandler(proc, clientData)
-    Tcl_ExitProc *proc;		/* Procedure to invoke. */
-    ClientData clientData;	/* Arbitrary value to pass to proc. */
+Tcl_CreateThreadExitHandler(
+    Tcl_ExitProc *proc,		/* Function to invoke. */
+    ClientData clientData)	/* Arbitrary value to pass to proc. */
 {
     ExitHandler *exitPtr;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -591,24 +789,23 @@ Tcl_CreateThreadExitHandler(proc, clientData)
  *
  * Tcl_DeleteThreadExitHandler --
  *
- *	This procedure cancels an existing exit handler matching proc
- *	and clientData, if such a handler exits.
+ *	This function cancels an existing exit handler matching proc and
+ *	clientData, if such a handler exits.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If there is an exit handler corresponding to proc and clientData
- *	then it is cancelled;  if no such handler exists then nothing
- *	happens.
+ *	If there is an exit handler corresponding to proc and clientData then
+ *	it is cancelled; if no such handler exists then nothing happens.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteThreadExitHandler(proc, clientData)
-    Tcl_ExitProc *proc;		/* Procedure that was previously registered. */
-    ClientData clientData;	/* Arbitrary value to pass to proc. */
+Tcl_DeleteThreadExitHandler(
+    Tcl_ExitProc *proc,		/* Function that was previously registered. */
+    ClientData clientData)	/* Arbitrary value to pass to proc. */
 {
     ExitHandler *exitPtr, *prevPtr;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -631,113 +828,85 @@ Tcl_DeleteThreadExitHandler(proc, clientData)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_Exit --
+ * Tcl_SetExitProc --
  *
- *	This procedure is called to terminate the application.
+ *	This function sets the application wide exit handler that will be
+ *	called by Tcl_Exit in place of the C-runtime exit. If the application
+ *	wide exit handler is NULL, the C-runtime exit will be used instead.
  *
  * Results:
- *	None.
+ *	The previously set application wide exit handler.
  *
  * Side effects:
- *	All existing exit handlers are invoked, then the application
- *	ends.
+ *	Sets the application wide exit handler to the specified value.
  *
  *----------------------------------------------------------------------
  */
 
-void
-Tcl_Exit(status)
-    int status;			/* Exit status for application;  typically
-				 * 0 for normal return, 1 for error return. */
-{
-    Tcl_Finalize();
-    TclpExit(status);
-}
-
-/*
- *-------------------------------------------------------------------------
- * 
- * TclSetLibraryPath --
- *
- *	Set the path that will be used for searching for init.tcl and 
- *	encodings when an interp is being created.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Changing the library path will affect what directories are
- *	examined when looking for encodings for all interps from that
- *	point forward.
- *
- *	The refcount of the new library path is incremented and the 
- *	refcount of the old path is decremented.
- *
- *-------------------------------------------------------------------------
- */
-
-void
-TclSetLibraryPath(pathPtr)
-    Tcl_Obj *pathPtr;		/* A Tcl list object whose elements are
-				 * the new library path. */
+Tcl_ExitProc *
+Tcl_SetExitProc(
+    Tcl_ExitProc *proc)		/* New exit handler for app or NULL */
 {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    const char *toDupe;
-    int size;
-
-    if (pathPtr != NULL) {
-	Tcl_IncrRefCount(pathPtr);
-    }
-    if (tsdPtr->tclLibraryPath != NULL) {
-	Tcl_DecrRefCount(tsdPtr->tclLibraryPath);
-    }
-    tsdPtr->tclLibraryPath = pathPtr;
+    Tcl_ExitProc *prevExitProc;
 
     /*
-     *  No mutex locking is needed here as up the stack we're within
-     *  TclpInitLock().
+     * Swap the old exit proc for the new one, saving the old one for our
+     * return value.
      */
-    if (tclLibraryPathStr != NULL) {
-	ckfree(tclLibraryPathStr);
-    }
-    toDupe = Tcl_GetStringFromObj(pathPtr, &size);
-    tclLibraryPathStr = ckalloc((unsigned)size+1);
-    memcpy(tclLibraryPathStr, toDupe, (unsigned)size+1);
+
+    Tcl_MutexLock(&exitMutex);
+    prevExitProc = appExitPtr;
+    appExitPtr = proc;
+    Tcl_MutexUnlock(&exitMutex);
+
+    return prevExitProc;
 }
 
 /*
- *-------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  *
- * TclGetLibraryPath --
+ * Tcl_Exit --
  *
- *	Return a Tcl list object whose elements are the library path.
- *	The caller should not modify the contents of the returned object.
+ *	This function is called to terminate the application.
  *
  * Results:
- *	As above.
+ *	None.
  *
  * Side effects:
- *	None.
+ *	All existing exit handlers are invoked, then the application ends.
  *
- *-------------------------------------------------------------------------
+ *----------------------------------------------------------------------
  */
 
-Tcl_Obj *
-TclGetLibraryPath()
+void
+Tcl_Exit(
+    int status)			/* Exit status for application; typically 0
+				 * for normal return, 1 for error return. */
 {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    Tcl_ExitProc *currentAppExitPtr;
 
-    if (tsdPtr->tclLibraryPath == NULL) {
+    Tcl_MutexLock(&exitMutex);
+    currentAppExitPtr = appExitPtr;
+    Tcl_MutexUnlock(&exitMutex);
+
+    if (currentAppExitPtr) {
+	/*
+	 * Warning: this code SHOULD NOT return, as there is code that depends
+	 * on Tcl_Exit never returning. In fact, we will Tcl_Panic if anyone
+	 * returns, so critical is this dependcy.
+	 */
+
+	currentAppExitPtr((ClientData) INT2PTR(status));
+	Tcl_Panic("AppExitProc returned unexpectedly");
+    } else {
 	/*
-	 * Grab the shared string and place it into a new thread specific
-	 * Tcl_Obj.
+	 * Use default handling.
 	 */
-	tsdPtr->tclLibraryPath = Tcl_NewStringObj(tclLibraryPathStr, -1);
 
-	/* take ownership */
-	Tcl_IncrRefCount(tsdPtr->tclLibraryPath);
+	Tcl_Finalize();
+	TclpExit(status);
+	Tcl_Panic("OS exit failed!");
     }
-    return tsdPtr->tclLibraryPath;
 }
 
 /*
@@ -745,17 +914,16 @@ TclGetLibraryPath()
  *
  * TclInitSubsystems --
  *
- *	Initialize various subsytems in Tcl.  This should be called the
- *	first time an interp is created, or before any of the subsystems
- *	are used.  This function ensures an order for the initialization 
- *	of subsystems:
+ *	Initialize various subsytems in Tcl. This should be called the first
+ *	time an interp is created, or before any of the subsystems are used.
+ *	This function ensures an order for the initialization of subsystems:
  *
- *	1. that cannot be initialized in lazy order because they are 
- *	mutually dependent.
+ *	1. that cannot be initialized in lazy order because they are mutually
+ *	dependent.
  *
- *	2. so that they can be finalized in a known order w/o causing
- *	the subsequent re-initialization of a subsystem in the act of
- *	shutting down another.
+ *	2. so that they can be finalized in a known order w/o causing the
+ *	subsequent re-initialization of a subsystem in the act of shutting
+ *	down another.
  *
  * Results:
  *	None.
@@ -767,74 +935,55 @@ TclGetLibraryPath()
  */
 
 void
-TclInitSubsystems(argv0)
-    CONST char *argv0;		/* Name of executable from argv[0] to main()
-				 * in native multi-byte encoding. */
+TclInitSubsystems(void)
 {
-    ThreadSpecificData *tsdPtr;
-
     if (inFinalize != 0) {
-	panic("TclInitSubsystems called while finalizing");
+	Tcl_Panic("TclInitSubsystems called while finalizing");
     }
 
-    /*
-     * Grab the thread local storage pointer before doing anything because
-     * the initialization routines will be registering exit handlers.
-     * We use this pointer to detect if this is the first time this
-     * thread has created an interpreter.
-     */
-
-    tsdPtr = (ThreadSpecificData *) TclThreadDataKeyGet(&dataKey);
-
     if (subsystemsInitialized == 0) {
-	/* 
-	 * Double check inside the mutex.  There are definitly calls
-	 * back into this routine from some of the procedures below.
+	/*
+	 * Double check inside the mutex. There are definitly calls back into
+	 * this routine from some of the functions below.
 	 */
 
 	TclpInitLock();
 	if (subsystemsInitialized == 0) {
 	    /*
-	     * Have to set this bit here to avoid deadlock with the
-	     * routines below us that call into TclInitSubsystems.
+	     * Have to set this bit here to avoid deadlock with the routines
+	     * below us that call into TclInitSubsystems.
 	     */
 
 	    subsystemsInitialized = 1;
 
-	    tclExecutableName = NULL;
-
 	    /*
 	     * Initialize locks used by the memory allocators before anything
 	     * interesting happens so we can use the allocators in the
 	     * implementation of self-initializing locks.
 	     */
 
+	    TclInitThreadStorage();     /* Creates master hash table for
+					 * thread local storage */
 #if USE_TCLALLOC
-	    TclInitAlloc(); /* process wide mutex init */
+	    TclInitAlloc();		/* Process wide mutex init */
 #endif
 #ifdef TCL_MEM_DEBUG
-	    TclInitDbCkalloc(); /* process wide mutex init */
+	    TclInitDbCkalloc();		/* Process wide mutex init */
 #endif
 
-	    TclpInitPlatform(); /* creates signal handler(s) */
-	    TclInitObjSubsystem(); /* register obj types, create mutexes */
-	    TclInitIOSubsystem(); /* inits a tsd key (noop) */
-	    TclInitEncodingSubsystem(); /* process wide encoding init */
-	    TclInitNamespaceSubsystem(); /* register ns obj type (mutexed) */
+	    TclpInitPlatform();		/* Creates signal handler(s) */
+	    TclInitDoubleConversion();	/* Initializes constants for
+					 * converting to/from double. */
+    	    TclInitObjSubsystem();	/* Register obj types, create
+					 * mutexes. */
+	    TclInitIOSubsystem();	/* Inits a tsd key (noop). */
+	    TclInitEncodingSubsystem();	/* Process wide encoding init. */
+	    TclpSetInterfaces();
+    	    TclInitNamespaceSubsystem();/* Register ns obj type (mutexed). */
 	}
 	TclpInitUnlock();
     }
-
-    if (tsdPtr == NULL) {
-	/*
-	 * First time this thread has created an interpreter.
-	 * We fetch the key again just in case no exit handlers were
-	 * registered by this point.
-	 */
-
-	(void) TCL_TSD_INIT(&dataKey);
-	TclInitNotifier();
-     }
+    TclInitNotifier();
 }
 
 /*
@@ -842,10 +991,9 @@ TclInitSubsystems(argv0)
  *
  * Tcl_Finalize --
  *
- *	Shut down Tcl.  First calls registered exit handlers, then
- *	carefully shuts down various subsystems.
- *	Called by Tcl_Exit or when the Tcl shared library is being 
- *	unloaded.
+ *	Shut down Tcl. First calls registered exit handlers, then carefully
+ *	shuts down various subsystems. Called by Tcl_Exit or when the Tcl
+ *	shared library is being unloaded.
  *
  * Results:
  *	None.
@@ -857,10 +1005,10 @@ TclInitSubsystems(argv0)
  */
 
 void
-Tcl_Finalize()
+Tcl_Finalize(void)
 {
     ExitHandler *exitPtr;
-    
+
     /*
      * Invoke exit handlers first.
      */
@@ -869,10 +1017,9 @@ Tcl_Finalize()
     inFinalize = 1;
     for (exitPtr = firstExitPtr; exitPtr != NULL; exitPtr = firstExitPtr) {
 	/*
-	 * Be careful to remove the handler from the list before
-	 * invoking its callback.  This protects us against
-	 * double-freeing if the callback should call
-	 * Tcl_DeleteExitHandler on itself.
+	 * Be careful to remove the handler from the list before invoking its
+	 * callback. This protects us against double-freeing if the callback
+	 * should call Tcl_DeleteExitHandler on itself.
 	 */
 
 	firstExitPtr = exitPtr->nextPtr;
@@ -880,27 +1027,29 @@ Tcl_Finalize()
 	(*exitPtr->proc)(exitPtr->clientData);
 	ckfree((char *) exitPtr);
 	Tcl_MutexLock(&exitMutex);
-    }    
+    }
     firstExitPtr = NULL;
     Tcl_MutexUnlock(&exitMutex);
 
     TclpInitLock();
-    if (subsystemsInitialized != 0) {
-	subsystemsInitialized = 0;
+    if (subsystemsInitialized == 0) {
+	goto alreadyFinalized;
+    }
+    subsystemsInitialized = 0;
 
-	/*
-	 * Ensure the thread-specific data is initialised as it is
-	 * used in Tcl_FinalizeThread()
-	 */
+    /*
+     * Ensure the thread-specific data is initialised as it is used in
+     * Tcl_FinalizeThread()
+     */
 
-	(void) TCL_TSD_INIT(&dataKey);
+    (void) TCL_TSD_INIT(&dataKey);
 
-	/*
-	 * Clean up after the current thread now, after exit handlers.
-	 * In particular, the testexithandler command sets up something
-	 * that writes to standard output, which gets closed.
-	 * Note that there is no thread-local storage after this call.
-	 */
+    /*
+     * Clean up after the current thread now, after exit handlers. In
+     * particular, the testexithandler command sets up something that writes
+     * to standard output, which gets closed. Note that there is no
+     * thread-local storage or IO subsystem after this call.
+     */
 
     Tcl_FinalizeThread();
 
@@ -930,110 +1079,114 @@ Tcl_Finalize()
      * after the exit handlers, because there are order dependencies.
      */
 
-	TclFinalizeCompilation();
-	TclFinalizeExecution();
-	TclFinalizeEnvironment();
+    TclFinalizeExecution();
+    TclFinalizeEnvironment();
 
-	/* 
-	 * Finalizing the filesystem must come after anything which
-	 * might conceivably interact with the 'Tcl_FS' API. 
-	 */
+    /*
+     * Finalizing the filesystem must come after anything which might
+     * conceivably interact with the 'Tcl_FS' API.
+     */
 
-	TclFinalizeFilesystem();
+    TclFinalizeFilesystem();
 
-	/*
-	 * Undo all the Tcl_ObjType registrations, and reset the master list
-	 * of free Tcl_Obj's.  After this returns, no more Tcl_Obj's should
-	 * be allocated or freed.
-	 *
-	 * Note in particular that TclFinalizeObjects() must follow
-	 * TclFinalizeFilesystem() because TclFinalizeFilesystem free's
-	 * the Tcl_Obj that holds the path of the current working directory.
-	 */
+    /*
+     * Undo all Tcl_ObjType registrations, and reset the master list of free
+     * Tcl_Obj's. After this returns, no more Tcl_Obj's should be allocated or
+     * freed.
+     *
+     * Note in particular that TclFinalizeObjects() must follow
+     * TclFinalizeFilesystem() because TclFinalizeFilesystem free's the
+     * Tcl_Obj that holds the path of the current working directory.
+     */
 
-	TclFinalizeObjects();
+    TclFinalizeObjects();
 
-	/* 
-	 * We must be sure the encoding finalization doesn't need
-	 * to examine the filesystem in any way.  Since it only
-	 * needs to clean up internal data structures, this is
-	 * fine.
-	 */
-	TclFinalizeEncodingSubsystem();
+    /*
+     * We must be sure the encoding finalization doesn't need to examine the
+     * filesystem in any way. Since it only needs to clean up internal data
+     * structures, this is fine.
+     */
 
-	if (tclExecutableName != NULL) {
-	    ckfree(tclExecutableName);
-	    tclExecutableName = NULL;
-	}
-	if (tclNativeExecutableName != NULL) {
-	    ckfree(tclNativeExecutableName);
-	    tclNativeExecutableName = NULL;
-	}
-	if (tclDefaultEncodingDir != NULL) {
-	    ckfree(tclDefaultEncodingDir);
-	    tclDefaultEncodingDir = NULL;
-	}
-	if (tclLibraryPathStr != NULL) {
-	    ckfree(tclLibraryPathStr);
-	    tclLibraryPathStr = NULL;
-	}
-	
-	Tcl_SetPanicProc(NULL);
+    TclFinalizeEncodingSubsystem();
 
-	/*
-	 * There have been several bugs in the past that cause
-	 * exit handlers to be established during Tcl_Finalize
-	 * processing.  Such exit handlers leave malloc'ed memory,
-	 * and Tcl_FinalizeThreadAlloc or Tcl_FinalizeMemorySubsystem
-	 * will result in a corrupted heap.  The result can be a
-	 * mysterious crash on process exit.  Check here that
-	 * nobody's done this.
-	 */
+    Tcl_SetPanicProc(NULL);
 
-#ifdef TCL_MEM_DEBUG
-	if ( firstExitPtr != NULL ) {
-	    Tcl_Panic( "exit handlers were created during Tcl_Finalize" );
-	}
-#endif
+    /*
+     * Repeat finalization of the thread local storage once more. Although
+     * this step is already done by the Tcl_FinalizeThread call above, series
+     * of events happening afterwards may re-initialize TSD slots. Those need
+     * to be finalized again, otherwise we're leaking memory chunks. Very
+     * important to note is that things happening afterwards should not
+     * reference anything which may re-initialize TSD's. This includes freeing
+     * Tcl_Objs's, among other things.
+     *
+     * This fixes the Tcl Bug #990552.
+     */
 
-	TclFinalizePreserve();
+    TclFinalizeThreadData();
 
-	/*
-	 * Free synchronization objects.  There really should only be one
-	 * thread alive at this moment.
-	 */
+    /*
+     * Now we can free constants for conversions to/from double.
+     */
+
+    TclFinalizeDoubleConversion();
+
+    /*
+     * There have been several bugs in the past that cause exit handlers to be
+     * established during Tcl_Finalize processing. Such exit handlers leave
+     * malloc'ed memory, and Tcl_FinalizeThreadAlloc or
+     * Tcl_FinalizeMemorySubsystem will result in a corrupted heap. The result
+     * can be a mysterious crash on process exit. Check here that nobody's
+     * done this.
+     */
+
+    if (firstExitPtr != NULL) {
+	Tcl_Panic("exit handlers were created during Tcl_Finalize");
+    }
+
+    TclFinalizePreserve();
+
+    /*
+     * Free synchronization objects. There really should only be one thread
+     * alive at this moment.
+     */
 
-	TclFinalizeSynchronization();
+    TclFinalizeSynchronization();
 
-#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC) && !defined(TCL_MEM_DEBUG) && !defined(PURIFY)
-	TclFinalizeThreadAlloc();
+    /*
+     * Close down the thread-specific object allocator.
+     */
+
+#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
+    TclFinalizeThreadAlloc();
 #endif
 
-	/*
-	 * We defer unloading of packages until very late 
-	 * to avoid memory access issues.  Both exit callbacks and
-	 * synchronization variables may be stored in packages.
-	 * 
-	 * Note that TclFinalizeLoad unloads packages in the reverse
-	 * of the order they were loaded in (i.e. last to be loaded
-	 * is the first to be unloaded).  This can be important for
-	 * correct unloading when dependencies exist.
-	 * 
-	 * Once load has been finalized, we will have deleted any
-	 * temporary copies of shared libraries and can therefore
-	 * reset the filesystem to its original state.
-	 */
+    /*
+     * We defer unloading of packages until very late to avoid memory access
+     * issues. Both exit callbacks and synchronization variables may be stored
+     * in packages.
+     *
+     * Note that TclFinalizeLoad unloads packages in the reverse of the order
+     * they were loaded in (i.e. last to be loaded is the first to be
+     * unloaded). This can be important for correct unloading when
+     * dependencies exist.
+     *
+     * Once load has been finalized, we will have deleted any temporary copies
+     * of shared libraries and can therefore reset the filesystem to its
+     * original state.
+     */
 
-	TclFinalizeLoad();
-	TclResetFilesystem();
-	
-	/*
-	 * At this point, there should no longer be any ckalloc'ed memory.
-	 */
+    TclFinalizeLoad();
+    TclResetFilesystem();
 
-	TclFinalizeMemorySubsystem();
-	inFinalize = 0;
-    }
+    /*
+     * At this point, there should no longer be any ckalloc'ed memory.
+     */
+
+    TclFinalizeMemorySubsystem();
+    inFinalize = 0;
+
+  alreadyFinalized:
     TclFinalizeLock();
 }
 
@@ -1042,8 +1195,8 @@ Tcl_Finalize()
  *
  * Tcl_FinalizeThread --
  *
- *	Runs the exit handlers to allow Tcl to clean up its state
- *	about a particular thread.
+ *	Runs the exit handlers to allow Tcl to clean up its state about a
+ *	particular thread.
  *
  * Results:
  *	None.
@@ -1055,30 +1208,26 @@ Tcl_Finalize()
  */
 
 void
-Tcl_FinalizeThread()
+Tcl_FinalizeThread(void)
 {
     ExitHandler *exitPtr;
     ThreadSpecificData *tsdPtr;
 
+    /*
+     * We use TclThreadDataKeyGet here, rather than Tcl_GetThreadData, because
+     * we don't want to initialize the data block if it hasn't been
+     * initialized already.
+     */
+
     tsdPtr = (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
     if (tsdPtr != NULL) {
 	tsdPtr->inExit = 1;
 
-	/*
-	 * Clean up the library path now, before we invalidate thread-local
-	 * storage or calling thread exit handlers.
-	 */
-
-	if (tsdPtr->tclLibraryPath != NULL) {
-	    Tcl_DecrRefCount(tsdPtr->tclLibraryPath);
-	    tsdPtr->tclLibraryPath = NULL;
-	}
-
 	for (exitPtr = tsdPtr->firstExitPtr; exitPtr != NULL;
 		exitPtr = tsdPtr->firstExitPtr) {
 	    /*
 	     * Be careful to remove the handler from the list before invoking
-	     * its callback.  This protects us against double-freeing if the
+	     * its callback. This protects us against double-freeing if the
 	     * callback should call Tcl_DeleteThreadExitHandler on itself.
 	     */
 
@@ -1089,14 +1238,15 @@ Tcl_FinalizeThread()
 	TclFinalizeIOSubsystem();
 	TclFinalizeNotifier();
 	TclFinalizeAsync();
+	TclFinalizeThreadObjects();
     }
 
     /*
      * Blow away all thread local storage blocks.
      *
-     * Note that Tcl API allows creation of threads which do not use any
-     * Tcl interp or other Tcl subsytems. Those threads might, however,
-     * use thread local storage, so we must unconditionally finalize it.
+     * Note that Tcl API allows creation of threads which do not use any Tcl
+     * interp or other Tcl subsytems. Those threads might, however, use thread
+     * local storage, so we must unconditionally finalize it.
      *
      * Fix [Bug #571002]
      */
@@ -1121,7 +1271,7 @@ Tcl_FinalizeThread()
  */
 
 int
-TclInExit()
+TclInExit(void)
 {
     return inFinalize;
 }
@@ -1143,7 +1293,7 @@ TclInExit()
  */
 
 int
-TclInThreadExit()
+TclInThreadExit(void)
 {
     ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
 	    TclThreadDataKeyGet(&dataKey);
@@ -1159,8 +1309,8 @@ TclInThreadExit()
  *
  * Tcl_VwaitObjCmd --
  *
- *	This procedure is invoked to process the "vwait" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "vwait" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1173,17 +1323,17 @@ TclInThreadExit()
 
 	/* ARGSUSED */
 int
-Tcl_VwaitObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_VwaitObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
     int done, foundEvent;
     char *nameString;
 
     if (objc != 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "name");
+	Tcl_WrongNumArgs(interp, 1, objv, "name");
 	return TCL_ERROR;
     }
     nameString = Tcl_GetString(objv[1]);
@@ -1196,20 +1346,27 @@ Tcl_VwaitObjCmd(clientData, interp, objc, objv)
     foundEvent = 1;
     while (!done && foundEvent) {
 	foundEvent = Tcl_DoOneEvent(TCL_ALL_EVENTS);
+	if (Tcl_LimitExceeded(interp)) {
+	    break;
+	}
     }
     Tcl_UntraceVar(interp, nameString,
 	    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
 	    VwaitVarProc, (ClientData) &done);
 
     /*
-     * Clear out the interpreter's result, since it may have been set
-     * by event handlers.
+     * Clear out the interpreter's result, since it may have been set by event
+     * handlers.
      */
 
     Tcl_ResetResult(interp);
     if (!foundEvent) {
 	Tcl_AppendResult(interp, "can't wait for variable \"", nameString,
-		"\":  would wait forever", (char *) NULL);
+		"\": would wait forever", NULL);
+	return TCL_ERROR;
+    }
+    if (!done) {
+	Tcl_AppendResult(interp, "limit exceeded", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -1217,17 +1374,17 @@ Tcl_VwaitObjCmd(clientData, interp, objc, objv)
 
 	/* ARGSUSED */
 static char *
-VwaitVarProc(clientData, interp, name1, name2, flags)
-    ClientData clientData;	/* Pointer to integer to set to 1. */
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *name1;		/* Name of variable. */
-    CONST char *name2;		/* Second part of variable name. */
-    int flags;			/* Information about what happened. */
+VwaitVarProc(
+    ClientData clientData,	/* Pointer to integer to set to 1. */
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    CONST char *name1,		/* Name of variable. */
+    CONST char *name2,		/* Second part of variable name. */
+    int flags)			/* Information about what happened. */
 {
     int *donePtr = (int *) clientData;
 
     *donePtr = 1;
-    return (char *) NULL;
+    return NULL;
 }
 
 /*
@@ -1235,8 +1392,8 @@ VwaitVarProc(clientData, interp, name1, name2, flags)
  *
  * Tcl_UpdateObjCmd --
  *
- *	This procedure is invoked to process the "update" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "update" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1249,15 +1406,15 @@ VwaitVarProc(clientData, interp, name1, name2, flags)
 
 	/* ARGSUSED */
 int
-Tcl_UpdateObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_UpdateObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
     int optionIndex;
     int flags = 0;		/* Initialized to avoid compiler warning. */
-    static CONST char *updateOptions[] = {"idletasks", (char *) NULL};
+    static CONST char *updateOptions[] = {"idletasks", NULL};
     enum updateOptions {REGEXP_IDLETASKS};
 
     if (objc == 1) {
@@ -1268,37 +1425,39 @@ Tcl_UpdateObjCmd(clientData, interp, objc, objv)
 	    return TCL_ERROR;
 	}
 	switch ((enum updateOptions) optionIndex) {
-	    case REGEXP_IDLETASKS: {
-		flags = TCL_WINDOW_EVENTS|TCL_IDLE_EVENTS|TCL_DONT_WAIT;
-		break;
-	    }
-	    default: {
-		panic("Tcl_UpdateObjCmd: bad option index to UpdateOptions");
-	    }
+	case REGEXP_IDLETASKS:
+	    flags = TCL_WINDOW_EVENTS|TCL_IDLE_EVENTS|TCL_DONT_WAIT;
+	    break;
+	default:
+	    Tcl_Panic("Tcl_UpdateObjCmd: bad option index to UpdateOptions");
 	}
     } else {
-        Tcl_WrongNumArgs(interp, 1, objv, "?idletasks?");
+	Tcl_WrongNumArgs(interp, 1, objv, "?idletasks?");
 	return TCL_ERROR;
     }
-    
+
     while (Tcl_DoOneEvent(flags) != 0) {
-	/* Empty loop body */
+	if (Tcl_LimitExceeded(interp)) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "limit exceeded", NULL);
+	    return TCL_ERROR;
+	}
     }
 
     /*
-     * Must clear the interpreter's result because event handlers could
-     * have executed commands.
+     * Must clear the interpreter's result because event handlers could have
+     * executed commands.
      */
 
     Tcl_ResetResult(interp);
     return TCL_OK;
 }
-
+
 #ifdef TCL_THREADS
 /*
  *-----------------------------------------------------------------------------
  *
- *  NewThreadProc --
+ * NewThreadProc --
  *
  * 	Bootstrap function of a new Tcl thread.
  *
@@ -1312,34 +1471,36 @@ Tcl_UpdateObjCmd(clientData, interp, objc, objv)
  */
 
 static Tcl_ThreadCreateType
-NewThreadProc(ClientData clientData)
+NewThreadProc(
+    ClientData clientData)
 {
     ThreadClientData *cdPtr;
     ClientData threadClientData;
     Tcl_ThreadCreateProc *threadProc;
 
-    cdPtr = (ThreadClientData*)clientData;
+    cdPtr = (ThreadClientData *) clientData;
     threadProc = cdPtr->proc;
     threadClientData = cdPtr->clientData;
-    ckfree((char*)clientData); /* Allocated in Tcl_CreateThread() */
+    ckfree((char *) clientData);	/* Allocated in Tcl_CreateThread() */
 
     (*threadProc)(threadClientData);
 
     TCL_THREAD_CREATE_RETURN;
 }
 #endif
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_CreateThread --
  *
- *	This procedure creates a new thread. This actually belongs
- *	to the tclThread.c file but since we use some private 
- *	data structures local to this file, it is placed here.
+ *	This function creates a new thread. This actually belongs to the
+ *	tclThread.c file but since we use some private data structures local
+ *	to this file, it is placed here.
  *
  * Results:
- *	TCL_OK if the thread could be created.  The thread ID is
- *	returned in a parameter.
+ *	TCL_OK if the thread could be created. The thread ID is returned in a
+ *	parameter.
  *
  * Side effects:
  *	A new thread is created.
@@ -1348,24 +1509,32 @@ NewThreadProc(ClientData clientData)
  */
 
 int
-Tcl_CreateThread(idPtr, proc, clientData, stackSize, flags)
-    Tcl_ThreadId *idPtr;		/* Return, the ID of the thread */
-    Tcl_ThreadCreateProc proc;		/* Main() function of the thread */
-    ClientData clientData;		/* The one argument to Main() */
-    int stackSize;			/* Size of stack for the new thread */
-    int flags;				/* Flags controlling behaviour of
-					 * the new thread */
+Tcl_CreateThread(
+    Tcl_ThreadId *idPtr,	/* Return, the ID of the thread */
+    Tcl_ThreadCreateProc proc,	/* Main() function of the thread */
+    ClientData clientData,	/* The one argument to Main() */
+    int stackSize,		/* Size of stack for the new thread */
+    int flags)			/* Flags controlling behaviour of the new
+				 * thread. */
 {
 #ifdef TCL_THREADS
     ThreadClientData *cdPtr;
 
-    cdPtr = (ThreadClientData*)ckalloc(sizeof(ThreadClientData));
+    cdPtr = (ThreadClientData *) ckalloc(sizeof(ThreadClientData));
     cdPtr->proc = proc;
     cdPtr->clientData = clientData;
 
-    return TclpThreadCreate(idPtr, NewThreadProc, (ClientData)cdPtr,
-                           stackSize, flags);
+    return TclpThreadCreate(idPtr, NewThreadProc, (ClientData) cdPtr,
+	    stackSize, flags);
 #else
     return TCL_ERROR;
 #endif /* TCL_THREADS */
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index 1ae182c..904c368 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -1,63 +1,46 @@
-/* 
+/*
  * tclExecute.c --
  *
- *	This file contains procedures that execute byte-compiled Tcl
- *	commands.
+ *	This file contains procedures that execute byte-compiled Tcl commands.
  *
  * Copyright (c) 1996-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-2000 by Scriptics Corporation.
- * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+ * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
+ * Copyright (c) 2002-2005 by Miguel Sofer.
+ * Copyright (c) 2005-2007 by Donal K. Fellows.
+ * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 #include "tclCompile.h"
+#include "tommath.h"
 
-#ifndef TCL_NO_MATH
-#   include <math.h>
-#endif
+#include <math.h>
+#include <float.h>
 
 /*
- * The stuff below is a bit of a hack so that this file can be used
- * in environments that include no UNIX, i.e. no errno.  Just define
- * errno here.
+ * Hack to determine whether we may expect IEEE floating point. The hack is
+ * formally incorrect in that non-IEEE platforms might have the same precision
+ * and range, but VAX, IBM, and Cray do not; are there any other floating
+ * point units that we might care about?
  */
 
-#ifndef TCL_GENERIC_ONLY
-#   include "tclPort.h"
-#else /* TCL_GENERIC_ONLY */
-#   ifndef NO_FLOAT_H
-#	include <float.h>
-#   else /* NO_FLOAT_H */
-#	ifndef NO_VALUES_H
-#	    include <values.h>
-#	endif /* !NO_VALUES_H */
-#   endif /* !NO_FLOAT_H */
-#   define NO_ERRNO_H
-#endif /* !TCL_GENERIC_ONLY */
-
-#ifdef NO_ERRNO_H
-int errno;
-#   define EDOM   33
-#   define ERANGE 34
+#if (FLT_RADIX == 2) && (DBL_MANT_DIG == 53) && (DBL_MAX_EXP == 1024)
+#define IEEE_FLOATING_POINT
 #endif
 
 /*
- * Need DBL_MAX for IS_INF() macro...
- */
-#ifndef DBL_MAX
-#   ifdef MAXDOUBLE
-#	define DBL_MAX MAXDOUBLE
-#   else /* !MAXDOUBLE */
-/*
- * This value is from the Solaris headers, but doubles seem to be the
- * same size everywhere.  Long doubles aren't, but we don't use those.
+ * A mask (should be 2**n-1) that is used to work out when the bytecode engine
+ * should call Tcl_AsyncReady() to see whether there is a signal that needs
+ * handling.
  */
-#	define DBL_MAX 1.79769313486231570e+308
-#   endif /* MAXDOUBLE */
-#endif /* !DBL_MAX */
+
+#ifndef ASYNC_CHECK_COUNT_MASK
+#   define ASYNC_CHECK_COUNT_MASK	63
+#endif /* !ASYNC_CHECK_COUNT_MASK */
 
 /*
  * Boolean flag indicating whether the Tcl bytecode interpreter has been
@@ -85,22 +68,25 @@ int tclTraceExec = 0;
  * Mapping from expression instruction opcodes to strings; used for error
  * messages. Note that these entries must match the order and number of the
  * expression opcodes (e.g., INST_LOR) in tclCompile.h.
+ *
+ * Does not include the string for INST_EXPON (and beyond), as that is
+ * disjoint for backward-compatability reasons.
  */
 
-static CONST char *CONST operatorStrings[] = {
+static const char *operatorStrings[] = {
     "||", "&&", "|", "^", "&", "==", "!=", "<", ">", "<=", ">=", "<<", ">>",
     "+", "-", "*", "/", "%", "+", "-", "~", "!",
     "BUILTIN FUNCTION", "FUNCTION",
-    "", "", "", "", "", "", "", "", "eq", "ne",
+    "", "", "", "", "", "", "", "", "eq", "ne"
 };
 
 /*
  * Mapping from Tcl result codes to strings; used for error and debugging
- * messages. 
+ * messages.
  */
 
 #ifdef TCL_COMPILE_DEBUG
-static CONST char *CONST resultStrings[] = {
+static const char *resultStrings[] = {
     "TCL_OK", "TCL_ERROR", "TCL_RETURN", "TCL_BREAK", "TCL_CONTINUE"
 };
 #endif
@@ -111,70 +97,142 @@ static CONST char *CONST resultStrings[] = {
 
 #ifdef TCL_COMPILE_STATS
 long		tclObjsAlloced = 0;
-long		tclObjsFreed   = 0;
-#define TCL_MAX_SHARED_OBJ_STATS 5
+long		tclObjsFreed = 0;
 long		tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 };
 #endif /* TCL_COMPILE_STATS */
 
 /*
- * Macros for testing floating-point values for certain special cases. Test
- * for not-a-number by comparing a value against itself; test for infinity
- * by comparing against the largest floating-point value.
+ * Support pre-8.5 bytecodes unless specifically requested otherwise.
+ */
+
+#ifndef TCL_SUPPORT_84_BYTECODE
+#define TCL_SUPPORT_84_BYTECODE 1
+#endif
+
+#if TCL_SUPPORT_84_BYTECODE
+/*
+ * We need to know the tclBuiltinFuncTable to support translation of pre-8.5
+ * math functions to the namespace-based ::tcl::mathfunc::op in 8.5+.
  */
 
-#define IS_NAN(v) ((v) != (v))
-#define IS_INF(v) (((v) > DBL_MAX) || ((v) < -DBL_MAX))
+typedef struct {
+    const char *name;		/* Name of function. */
+    int numArgs;	/* Number of arguments for function. */
+} BuiltinFunc;
 
 /*
- * The new macro for ending an instruction; note that a
- * reasonable C-optimiser will resolve all branches
- * at compile time. (result) is always a constant; the macro 
- * NEXT_INST_F handles constant (nCleanup), NEXT_INST_V is
- * resolved at runtime for variable (nCleanup).
+ * Table describing the built-in math functions. Entries in this table are
+ * indexed by the values of the INST_CALL_BUILTIN_FUNC instruction's
+ * operand byte.
+ */
+
+static const BuiltinFunc tclBuiltinFuncTable[] = {
+    {"acos", 1},
+    {"asin", 1},
+    {"atan", 1},
+    {"atan2", 2},
+    {"ceil", 1},
+    {"cos", 1},
+    {"cosh", 1},
+    {"exp", 1},
+    {"floor", 1},
+    {"fmod", 2},
+    {"hypot", 2},
+    {"log", 1},
+    {"log10", 1},
+    {"pow", 2},
+    {"sin", 1},
+    {"sinh", 1},
+    {"sqrt", 1},
+    {"tan", 1},
+    {"tanh", 1},
+    {"abs", 1},
+    {"double", 1},
+    {"int", 1},
+    {"rand", 0},
+    {"round", 1},
+    {"srand", 1},
+    {"wide", 1},
+    {NULL, 0},
+};
+
+#define LAST_BUILTIN_FUNC	25
+#endif
+
+/*
+ * These variable-access macros have to coincide with those in tclVar.c
+ */
+
+#define VarHashGetValue(hPtr) \
+    ((Var *) ((char *)hPtr - TclOffset(VarInHash, entry)))
+
+static inline Var *
+VarHashCreateVar(
+    TclVarHashTable *tablePtr,
+    Tcl_Obj *key,
+    int *newPtr)
+{
+    Tcl_HashEntry *hPtr = Tcl_CreateHashEntry((Tcl_HashTable *) tablePtr,
+	    (char *) key, newPtr);
+
+    if (!hPtr) {
+	return NULL;
+    }
+    return VarHashGetValue(hPtr);
+}
+
+#define VarHashFindVar(tablePtr, key) \
+    VarHashCreateVar((tablePtr), (key), NULL)
+
+/*
+ * The new macro for ending an instruction; note that a reasonable C-optimiser
+ * will resolve all branches at compile time. (result) is always a constant;
+ * the macro NEXT_INST_F handles constant (nCleanup), NEXT_INST_V is resolved
+ * at runtime for variable (nCleanup).
  *
  * ARGUMENTS:
  *    pcAdjustment: how much to increment pc
  *    nCleanup: how many objects to remove from the stack
- *    result: 0 indicates no object should be pushed on the
- *       stack; otherwise, push objResultPtr. If (result < 0),
- *       objResultPtr already has the correct reference count.
+ *    resultHandling: 0 indicates no object should be pushed on the stack;
+ *	otherwise, push objResultPtr. If (result < 0), objResultPtr already
+ *	has the correct reference count.
  */
 
-#define NEXT_INST_F(pcAdjustment, nCleanup, result) \
-     if (nCleanup == 0) {\
-	 if (result != 0) {\
-	     if ((result) > 0) {\
-		 PUSH_OBJECT(objResultPtr);\
-	     } else {\
-		 stackPtr[++stackTop] = objResultPtr;\
-	     }\
-	 } \
-	 pc += (pcAdjustment);\
-	 goto cleanup0;\
-     } else if (result != 0) {\
-	 if ((result) > 0) {\
-	     Tcl_IncrRefCount(objResultPtr);\
-	 }\
-	 pc += (pcAdjustment);\
-	 switch (nCleanup) {\
-	     case 1: goto cleanup1_pushObjResultPtr;\
-	     case 2: goto cleanup2_pushObjResultPtr;\
-	     default: panic("ERROR: bad usage of macro NEXT_INST_F");\
-	 }\
-     } else {\
-	 pc += (pcAdjustment);\
-	 switch (nCleanup) {\
-	     case 1: goto cleanup1;\
-	     case 2: goto cleanup2;\
-	     default: panic("ERROR: bad usage of macro NEXT_INST_F");\
-	 }\
-     }
-
-#define NEXT_INST_V(pcAdjustment, nCleanup, result) \
+#define NEXT_INST_F(pcAdjustment, nCleanup, resultHandling) \
+    if (nCleanup == 0) {\
+	if (resultHandling != 0) {\
+	    if ((resultHandling) > 0) {\
+		PUSH_OBJECT(objResultPtr);\
+	    } else {\
+		*(++tosPtr) = objResultPtr;\
+	    }\
+	} \
+	pc += (pcAdjustment);\
+	goto cleanup0;\
+    } else if (resultHandling != 0) {\
+	if ((resultHandling) > 0) {\
+	    Tcl_IncrRefCount(objResultPtr);\
+	}\
+	pc += (pcAdjustment);\
+	switch (nCleanup) {\
+	    case 1: goto cleanup1_pushObjResultPtr;\
+	    case 2: goto cleanup2_pushObjResultPtr;\
+	    default: Tcl_Panic("bad usage of macro NEXT_INST_F");\
+	}\
+    } else {\
+	pc += (pcAdjustment);\
+	switch (nCleanup) {\
+	    case 1: goto cleanup1;\
+	    case 2: goto cleanup2;\
+	    default: Tcl_Panic("bad usage of macro NEXT_INST_F");\
+	}\
+    }
+
+#define NEXT_INST_V(pcAdjustment, nCleanup, resultHandling) \
     pc += (pcAdjustment);\
     cleanup = (nCleanup);\
-    if (result) {\
-	if ((result) > 0) {\
+    if (resultHandling) {\
+	if ((resultHandling) > 0) {\
 	    Tcl_IncrRefCount(objResultPtr);\
 	}\
 	goto cleanupV_pushObjResultPtr;\
@@ -182,7 +240,6 @@ long		tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 };
 	goto cleanupV;\
     }
 
-
 /*
  * Macros used to cache often-referenced Tcl evaluation stack information
  * in local variables. Note that a DECACHE_STACK_INFO()-CACHE_STACK_INFO()
@@ -192,46 +249,52 @@ long		tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 };
  */
 
 #define CACHE_STACK_INFO() \
-    stackPtr = eePtr->stackPtr; \
-    stackTop = eePtr->stackTop
+    checkInterp = 1
 
 #define DECACHE_STACK_INFO() \
-    eePtr->stackTop = stackTop
-
+    esPtr->tosPtr = tosPtr
 
 /*
  * Macros used to access items on the Tcl evaluation stack. PUSH_OBJECT
  * increments the object's ref count since it makes the stack have another
  * reference pointing to the object. However, POP_OBJECT does not decrement
- * the ref count. This is because the stack may hold the only reference to
- * the object, so the object would be destroyed if its ref count were
- * decremented before the caller had a chance to, e.g., store it in a
- * variable. It is the caller's responsibility to decrement the ref count
- * when it is finished with an object.
+ * the ref count. This is because the stack may hold the only reference to the
+ * object, so the object would be destroyed if its ref count were decremented
+ * before the caller had a chance to, e.g., store it in a variable. It is the
+ * caller's responsibility to decrement the ref count when it is finished with
+ * an object.
  *
  * WARNING! It is essential that objPtr only appear once in the PUSH_OBJECT
- * macro. The actual parameter might be an expression with side effects,
- * and this ensures that it will be executed only once. 
+ * macro. The actual parameter might be an expression with side effects, and
+ * this ensures that it will be executed only once.
  */
-    
+
 #define PUSH_OBJECT(objPtr) \
-    Tcl_IncrRefCount(stackPtr[++stackTop] = (objPtr))
-    
-#define POP_OBJECT() \
-    (stackPtr[stackTop--])
+    Tcl_IncrRefCount(*(++tosPtr) = (objPtr))
+
+#define POP_OBJECT()	*(tosPtr--)
+
+#define OBJ_AT_TOS	*tosPtr
+
+#define OBJ_UNDER_TOS	*(tosPtr-1)
+
+#define OBJ_AT_DEPTH(n)	*(tosPtr-(n))
+
+#define CURR_DEPTH	(tosPtr - initTosPtr)
 
 /*
  * Macros used to trace instruction execution. The macros TRACE,
- * TRACE_WITH_OBJ, and O2S are only used inside TclExecuteByteCode.
- * O2S is only used in TRACE* calls to get a string from an object.
+ * TRACE_WITH_OBJ, and O2S are only used inside TclExecuteByteCode. O2S is
+ * only used in TRACE* calls to get a string from an object.
  */
 
 #ifdef TCL_COMPILE_DEBUG
 #   define TRACE(a) \
     if (traceInstructions) { \
-        fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, stackTop, \
-	       (unsigned int)(pc - codePtr->codeStart), \
-	       GetOpcodeName(pc)); \
+	fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \
+		(int) CURR_DEPTH, \
+		(unsigned)(pc - codePtr->codeStart), \
+		GetOpcodeName(pc)); \
 	printf a; \
     }
 #   define TRACE_APPEND(a) \
@@ -240,18 +303,19 @@ long		tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 };
     }
 #   define TRACE_WITH_OBJ(a, objPtr) \
     if (traceInstructions) { \
-        fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, stackTop, \
-	       (unsigned int)(pc - codePtr->codeStart), \
-	       GetOpcodeName(pc)); \
+	fprintf(stdout, "%2d: %2d (%u) %s ", iPtr->numLevels, \
+		(int) CURR_DEPTH, \
+		(unsigned)(pc - codePtr->codeStart), \
+		GetOpcodeName(pc)); \
 	printf a; \
-        TclPrintObject(stdout, objPtr, 30); \
-        fprintf(stdout, "\n"); \
+	TclPrintObject(stdout, objPtr, 30); \
+	fprintf(stdout, "\n"); \
     }
 #   define O2S(objPtr) \
     (objPtr ? TclGetString(objPtr) : "")
 #else /* !TCL_COMPILE_DEBUG */
 #   define TRACE(a)
-#   define TRACE_APPEND(a) 
+#   define TRACE_APPEND(a)
 #   define TRACE_WITH_OBJ(a, objPtr)
 #   define O2S(objPtr)
 #endif /* TCL_COMPILE_DEBUG */
@@ -263,147 +327,308 @@ long		tclObjsShared[TCL_MAX_SHARED_OBJ_STATS] = { 0, 0, 0, 0, 0 };
 #define TCL_DTRACE_INST_NEXT() \
     if (TCL_DTRACE_INST_DONE_ENABLED()) {\
 	if (curInstName) {\
-	    TCL_DTRACE_INST_DONE(curInstName, stackTop - initStackTop,\
-		    stackPtr + stackTop);\
+	    TCL_DTRACE_INST_DONE(curInstName, (int) CURR_DEPTH, tosPtr);\
 	}\
 	curInstName = tclInstructionTable[*pc].name;\
 	if (TCL_DTRACE_INST_START_ENABLED()) {\
-	    TCL_DTRACE_INST_START(curInstName, stackTop - initStackTop,\
-		    stackPtr + stackTop);\
+	    TCL_DTRACE_INST_START(curInstName, (int) CURR_DEPTH, tosPtr);\
 	}\
     } else if (TCL_DTRACE_INST_START_ENABLED()) {\
-	TCL_DTRACE_INST_START(tclInstructionTable[*pc].name,\
-		stackTop - initStackTop, stackPtr + stackTop);\
+	TCL_DTRACE_INST_START(tclInstructionTable[*pc].name, (int) CURR_DEPTH,\
+		tosPtr);\
     }
 #define TCL_DTRACE_INST_LAST() \
     if (TCL_DTRACE_INST_DONE_ENABLED() && curInstName) {\
-	TCL_DTRACE_INST_DONE(curInstName, stackTop - initStackTop,\
-		stackPtr + stackTop);\
+	TCL_DTRACE_INST_DONE(curInstName, (int) CURR_DEPTH, tosPtr);\
     }
 
 /*
- * Macro to read a string containing either a wide or an int and
- * decide which it is while decoding it at the same time.  This
- * enforces the policy that integer constants between LONG_MIN and
- * LONG_MAX (inclusive) are represented by normal longs, and integer
- * constants outside that range are represented by wide ints.
+ * Macro used in this file to save a function call for common uses of
+ * TclGetNumberFromObj(). The ANSI C "prototype" is:
  *
- * GET_WIDE_OR_INT is the same as REQUIRE_WIDE_OR_INT except it never
- * generates an error message.
+ * MODULE_SCOPE int GetNumberFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+ *			ClientData *ptrPtr, int *tPtr);
  */
-#define REQUIRE_WIDE_OR_INT(resultVar, objPtr, longVar, wideVar)	\
-    (resultVar) = Tcl_GetWideIntFromObj(interp, (objPtr), &(wideVar));	\
-    if ((resultVar) == TCL_OK && (wideVar) >= Tcl_LongAsWide(LONG_MIN)	\
-	    && (wideVar) <= Tcl_LongAsWide(LONG_MAX)) {			\
-	(objPtr)->typePtr = &tclIntType;				\
-	(objPtr)->internalRep.longValue = (longVar)			\
-		= Tcl_WideAsLong(wideVar);				\
-    }
-#define GET_WIDE_OR_INT(resultVar, objPtr, longVar, wideVar)		\
-    (resultVar) = Tcl_GetWideIntFromObj((Tcl_Interp *) NULL, (objPtr),	\
-	    &(wideVar));						\
-    if ((resultVar) == TCL_OK && (wideVar) >= Tcl_LongAsWide(LONG_MIN)	\
-	    && (wideVar) <= Tcl_LongAsWide(LONG_MAX)) {			\
-	(objPtr)->typePtr = &tclIntType;				\
-	(objPtr)->internalRep.longValue = (longVar)			\
-		= Tcl_WideAsLong(wideVar);				\
-    }
+
+#ifdef NO_WIDE_TYPE
+
+#define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr)			\
+    (((objPtr)->typePtr == &tclIntType)					\
+	?	(*(tPtr) = TCL_NUMBER_LONG,				\
+		*(ptrPtr) = (ClientData)				\
+		    (&((objPtr)->internalRep.longValue)), TCL_OK) :	\
+    ((objPtr)->typePtr == &tclDoubleType)				\
+	?	(((TclIsNaN((objPtr)->internalRep.doubleValue))		\
+		    ?	(*(tPtr) = TCL_NUMBER_NAN)			\
+		    :	(*(tPtr) = TCL_NUMBER_DOUBLE)),			\
+		*(ptrPtr) = (ClientData)				\
+		    (&((objPtr)->internalRep.doubleValue)), TCL_OK) :	\
+    ((((objPtr)->typePtr == NULL) && ((objPtr)->bytes == NULL)) ||	\
+    (((objPtr)->bytes != NULL) && ((objPtr)->length == 0)))		\
+	? TCL_ERROR :							\
+    TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr)))
+
+#else
+
+#define GetNumberFromObj(interp, objPtr, ptrPtr, tPtr)			\
+    (((objPtr)->typePtr == &tclIntType)					\
+	?	(*(tPtr) = TCL_NUMBER_LONG,				\
+		*(ptrPtr) = (ClientData)				\
+		    (&((objPtr)->internalRep.longValue)), TCL_OK) :	\
+    ((objPtr)->typePtr == &tclWideIntType)				\
+	?	(*(tPtr) = TCL_NUMBER_WIDE,				\
+		*(ptrPtr) = (ClientData)				\
+		    (&((objPtr)->internalRep.wideValue)), TCL_OK) :	\
+    ((objPtr)->typePtr == &tclDoubleType)				\
+	?	(((TclIsNaN((objPtr)->internalRep.doubleValue))		\
+		    ?	(*(tPtr) = TCL_NUMBER_NAN)			\
+		    :	(*(tPtr) = TCL_NUMBER_DOUBLE)),			\
+		*(ptrPtr) = (ClientData)				\
+		    (&((objPtr)->internalRep.doubleValue)), TCL_OK) :	\
+    ((((objPtr)->typePtr == NULL) && ((objPtr)->bytes == NULL)) ||	\
+    (((objPtr)->bytes != NULL) && ((objPtr)->length == 0)))		\
+	? TCL_ERROR :							\
+    TclGetNumberFromObj((interp), (objPtr), (ptrPtr), (tPtr)))
+
+#endif
+
 /*
- * Combined with REQUIRE_WIDE_OR_INT, this gets a long value from
- * an obj.
+ * Macro used in this file to save a function call for common uses of
+ * Tcl_GetBooleanFromObj(). The ANSI C "prototype" is:
+ *
+ * MODULE_SCOPE int TclGetBooleanFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+ *			int *boolPtr);
  */
-#define FORCE_LONG(objPtr, longVar, wideVar)				\
-    if ((objPtr)->typePtr == &tclWideIntType) {				\
-	(longVar) = Tcl_WideAsLong(wideVar);				\
-    }
-#define IS_INTEGER_TYPE(typePtr)					\
-	((typePtr) == &tclIntType || (typePtr) == &tclWideIntType)
-#define IS_NUMERIC_TYPE(typePtr)					\
-	(IS_INTEGER_TYPE(typePtr) || (typePtr) == &tclDoubleType)
 
-#define W0	Tcl_LongAsWide(0)
+#define TclGetBooleanFromObj(interp, objPtr, boolPtr)			\
+    ((((objPtr)->typePtr == &tclIntType)				\
+	|| ((objPtr)->typePtr == &tclBooleanType))			\
+	? (*(boolPtr) = ((objPtr)->internalRep.longValue!=0), TCL_OK)	\
+	: Tcl_GetBooleanFromObj((interp), (objPtr), (boolPtr)))
+
 /*
- * For tracing that uses wide values.
+ * Macro used in this file to save a function call for common uses of
+ * Tcl_GetWideIntFromObj(). The ANSI C "prototype" is:
+ *
+ * MODULE_SCOPE int TclGetWideIntFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+ *			Tcl_WideInt *wideIntPtr);
  */
-#define LLD				"%" TCL_LL_MODIFIER "d"
 
-#ifndef TCL_WIDE_INT_IS_LONG
+#ifdef NO_WIDE_TYPE
+#define TclGetWideIntFromObj(interp, objPtr, wideIntPtr)		\
+    (((objPtr)->typePtr == &tclIntType)					\
+	? (*(wideIntPtr) = (Tcl_WideInt)				\
+		((objPtr)->internalRep.longValue), TCL_OK) :		\
+	Tcl_GetWideIntFromObj((interp), (objPtr), (wideIntPtr)))
+#else
+#define TclGetWideIntFromObj(interp, objPtr, wideIntPtr)		\
+    (((objPtr)->typePtr == &tclWideIntType)				\
+	? (*(wideIntPtr) = (objPtr)->internalRep.wideValue, TCL_OK) :	\
+    ((objPtr)->typePtr == &tclIntType)					\
+	? (*(wideIntPtr) = (Tcl_WideInt)				\
+		((objPtr)->internalRep.longValue), TCL_OK) :		\
+	Tcl_GetWideIntFromObj((interp), (objPtr), (wideIntPtr)))
+#endif
+
 /*
- * Extract a double value from a general numeric object.
+ * Macro used to make the check for type overflow more mnemonic. This works by
+ * comparing sign bits; the rest of the word is irrelevant. The ANSI C
+ * "prototype" (where inttype_t is any integer type) is:
+ *
+ * MODULE_SCOPE int Overflowing(inttype_t a, inttype_t b, inttype_t sum);
+ *
+ * Check first the condition most likely to fail in usual code (at least for
+ * usage in [incr]: do the first summand and the sum have != signs?
  */
-#define GET_DOUBLE_VALUE(doubleVar, objPtr, typePtr)			\
-    if ((typePtr) == &tclIntType) {					\
-	(doubleVar) = (double) (objPtr)->internalRep.longValue;		\
-    } else if ((typePtr) == &tclWideIntType) {				\
-	(doubleVar) = Tcl_WideAsDouble((objPtr)->internalRep.wideValue);\
-    } else {								\
-	(doubleVar) = (objPtr)->internalRep.doubleValue;		\
-    }
-#else /* TCL_WIDE_INT_IS_LONG */
-#define GET_DOUBLE_VALUE(doubleVar, objPtr, typePtr)			\
-    if (((typePtr) == &tclIntType) || ((typePtr) == &tclWideIntType)) { \
-	(doubleVar) = (double) (objPtr)->internalRep.longValue;		\
-    } else {								\
-	(doubleVar) = (objPtr)->internalRep.doubleValue;		\
-    }
-#endif /* TCL_WIDE_INT_IS_LONG */
+
+#define Overflowing(a,b,sum) ((((a)^(sum)) < 0) && (((a)^(b)) >= 0))
+
+/*
+ * Custom object type only used in this file; values of its type should never
+ * be seen by user scripts.
+ */
+
+static Tcl_ObjType dictIteratorType = {
+    "dictIterator",
+    NULL, NULL, NULL, NULL
+};
+
+/*
+ * Auxiliary tables used to compute powers of small integers
+ */
+
+#if (LONG_MAX == 0x7fffffff)
+
+/*
+ * Maximum base that, when raised to powers 2, 3, ... 8, fits in a 32-bit
+ * signed integer
+ */
+
+static const long MaxBase32[] = {46340, 1290, 215, 73, 35, 21, 14};
+static const size_t MaxBase32Size = sizeof(MaxBase32)/sizeof(long);
+
+/*
+ * Table giving 3, 4, ..., 11, raised to the powers 9, 10, ..., as far as they
+ * fit in a 32-bit signed integer. Exp32Index[i] gives the starting index of
+ * powers of i+3; Exp32Value[i] gives the corresponding powers.
+ */
+
+static const unsigned short Exp32Index[] = {
+    0, 11, 18, 23, 26, 29, 31, 32, 33
+};
+static const size_t Exp32IndexSize = sizeof(Exp32Index)/sizeof(unsigned short);
+static const long Exp32Value[] = {
+    19683, 59049, 177147, 531441, 1594323, 4782969, 14348907, 43046721,
+    129140163, 387420489, 1162261467, 262144, 1048576, 4194304,
+    16777216, 67108864, 268435456, 1073741824, 1953125, 9765625,
+    48828125, 244140625, 1220703125, 10077696, 60466176, 362797056,
+    40353607, 282475249, 1977326743, 134217728, 1073741824, 387420489,
+    1000000000
+};
+static const size_t Exp32ValueSize = sizeof(Exp32Value)/sizeof(long);
+
+#endif /* LONG_MAX == 0x7fffffff -- 32 bit machine */
+
+#if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG)
+
+/*
+ * Maximum base that, when raised to powers 2, 3, ..., 16, fits in a
+ * Tcl_WideInt.
+ */
+
+static const Tcl_WideInt MaxBase64[] = {
+    (Tcl_WideInt)46340*65536+62259,	/* 3037000499 == isqrt(2**63-1) */
+    (Tcl_WideInt)2097151, (Tcl_WideInt)55108, (Tcl_WideInt)6208,
+    (Tcl_WideInt)1448, (Tcl_WideInt)511, (Tcl_WideInt)234, (Tcl_WideInt)127,
+    (Tcl_WideInt)78, (Tcl_WideInt)52, (Tcl_WideInt)38, (Tcl_WideInt)28,
+    (Tcl_WideInt)22, (Tcl_WideInt)18, (Tcl_WideInt)15
+};
+static const size_t MaxBase64Size = sizeof(MaxBase64)/sizeof(Tcl_WideInt);
+
+/*
+ *Table giving 3, 4, ..., 13 raised to powers greater than 16 when the
+ * results fit in a 64-bit signed integer.
+ */
+
+static const unsigned short Exp64Index[] = {
+    0, 23, 38, 49, 57, 63, 67, 70, 72, 74, 75, 76
+};
+static const size_t Exp64IndexSize = sizeof(Exp64Index)/sizeof(unsigned short);
+static const Tcl_WideInt Exp64Value[] = {
+    (Tcl_WideInt)243*243*243*3*3,
+    (Tcl_WideInt)243*243*243*3*3*3,
+    (Tcl_WideInt)243*243*243*3*3*3*3,
+    (Tcl_WideInt)243*243*243*243,
+    (Tcl_WideInt)243*243*243*243*3,
+    (Tcl_WideInt)243*243*243*243*3*3,
+    (Tcl_WideInt)243*243*243*243*3*3*3,
+    (Tcl_WideInt)243*243*243*243*3*3*3*3,
+    (Tcl_WideInt)243*243*243*243*243,
+    (Tcl_WideInt)243*243*243*243*243*3,
+    (Tcl_WideInt)243*243*243*243*243*3*3,
+    (Tcl_WideInt)243*243*243*243*243*3*3*3,
+    (Tcl_WideInt)243*243*243*243*243*3*3*3*3,
+    (Tcl_WideInt)243*243*243*243*243*243,
+    (Tcl_WideInt)243*243*243*243*243*243*3,
+    (Tcl_WideInt)243*243*243*243*243*243*3*3,
+    (Tcl_WideInt)243*243*243*243*243*243*3*3*3,
+    (Tcl_WideInt)243*243*243*243*243*243*3*3*3*3,
+    (Tcl_WideInt)243*243*243*243*243*243*243,
+    (Tcl_WideInt)243*243*243*243*243*243*243*3,
+    (Tcl_WideInt)243*243*243*243*243*243*243*3*3,
+    (Tcl_WideInt)243*243*243*243*243*243*243*3*3*3,
+    (Tcl_WideInt)243*243*243*243*243*243*243*3*3*3*3,
+    (Tcl_WideInt)1024*1024*1024*4*4,
+    (Tcl_WideInt)1024*1024*1024*4*4*4,
+    (Tcl_WideInt)1024*1024*1024*4*4*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024,
+    (Tcl_WideInt)1024*1024*1024*1024*4,
+    (Tcl_WideInt)1024*1024*1024*1024*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024*4*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024*4*4*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024*1024,
+    (Tcl_WideInt)1024*1024*1024*1024*1024*4,
+    (Tcl_WideInt)1024*1024*1024*1024*1024*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024*1024*4*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024*1024*4*4*4*4,
+    (Tcl_WideInt)1024*1024*1024*1024*1024*1024,
+    (Tcl_WideInt)1024*1024*1024*1024*1024*1024*4,
+    (Tcl_WideInt)3125*3125*3125*5*5,
+    (Tcl_WideInt)3125*3125*3125*5*5*5,
+    (Tcl_WideInt)3125*3125*3125*5*5*5*5,
+    (Tcl_WideInt)3125*3125*3125*3125,
+    (Tcl_WideInt)3125*3125*3125*3125*5,
+    (Tcl_WideInt)3125*3125*3125*3125*5*5,
+    (Tcl_WideInt)3125*3125*3125*3125*5*5*5,
+    (Tcl_WideInt)3125*3125*3125*3125*5*5*5*5,
+    (Tcl_WideInt)3125*3125*3125*3125*3125,
+    (Tcl_WideInt)3125*3125*3125*3125*3125*5,
+    (Tcl_WideInt)3125*3125*3125*3125*3125*5*5,
+    (Tcl_WideInt)7776*7776*7776*6*6,
+    (Tcl_WideInt)7776*7776*7776*6*6*6,
+    (Tcl_WideInt)7776*7776*7776*6*6*6*6,
+    (Tcl_WideInt)7776*7776*7776*7776,
+    (Tcl_WideInt)7776*7776*7776*7776*6,
+    (Tcl_WideInt)7776*7776*7776*7776*6*6,
+    (Tcl_WideInt)7776*7776*7776*7776*6*6*6,
+    (Tcl_WideInt)7776*7776*7776*7776*6*6*6*6,
+    (Tcl_WideInt)16807*16807*16807*7*7,
+    (Tcl_WideInt)16807*16807*16807*7*7*7,
+    (Tcl_WideInt)16807*16807*16807*7*7*7*7,
+    (Tcl_WideInt)16807*16807*16807*16807,
+    (Tcl_WideInt)16807*16807*16807*16807*7,
+    (Tcl_WideInt)16807*16807*16807*16807*7*7,
+    (Tcl_WideInt)32768*32768*32768*8*8,
+    (Tcl_WideInt)32768*32768*32768*8*8*8,
+    (Tcl_WideInt)32768*32768*32768*8*8*8*8,
+    (Tcl_WideInt)32768*32768*32768*32768,
+    (Tcl_WideInt)59049*59049*59049*9*9,
+    (Tcl_WideInt)59049*59049*59049*9*9*9,
+    (Tcl_WideInt)59049*59049*59049*9*9*9*9,
+    (Tcl_WideInt)100000*100000*100000*10*10,
+    (Tcl_WideInt)100000*100000*100000*10*10*10,
+    (Tcl_WideInt)161051*161051*161051*11*11,
+    (Tcl_WideInt)161051*161051*161051*11*11*11,
+    (Tcl_WideInt)248832*248832*248832*12*12,
+    (Tcl_WideInt)371293*371293*371293*13*13
+};
+static const size_t Exp64ValueSize = sizeof(Exp64Value)/sizeof(Tcl_WideInt);
+
+#endif
 
 /*
  * Declarations for local procedures to this file:
  */
 
-static int		TclExecuteByteCode _ANSI_ARGS_((Tcl_Interp *interp,
-			    ByteCode *codePtr));
-static void		DupExprCodeInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *copyPtr));
-static int		ExprAbsFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprBinaryFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprCallMathFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, int objc, Tcl_Obj **objv));
-static int		ExprDoubleFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprIntFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprRandFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprRoundFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprSrandFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprUnaryFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
-static int		ExprWideFunc _ANSI_ARGS_((Tcl_Interp *interp,
-			    ExecEnv *eePtr, ClientData clientData));
 #ifdef TCL_COMPILE_STATS
-static int              EvalStatsCmd _ANSI_ARGS_((ClientData clientData,
-                            Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
+static int		EvalStatsCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
 #endif /* TCL_COMPILE_STATS */
-static void		FreeExprCodeInternalRep _ANSI_ARGS_ ((Tcl_Obj *objPtr));
-#ifdef TCL_COMPILE_DEBUG
-static char *		GetOpcodeName _ANSI_ARGS_((unsigned char *pc));
-#endif /* TCL_COMPILE_DEBUG */
-static ExceptionRange *	GetExceptRangeForPc _ANSI_ARGS_((unsigned char *pc,
-			    int catchOnly, ByteCode* codePtr));
-static char *		GetSrcInfoForPc _ANSI_ARGS_((unsigned char *pc,
-        		    ByteCode* codePtr, int *lengthPtr));
-static void		GrowEvaluationStack _ANSI_ARGS_((ExecEnv *eePtr));
-static void		IllegalExprOperandType _ANSI_ARGS_((
-			    Tcl_Interp *interp, unsigned char *pc,
-			    Tcl_Obj *opndPtr));
-static void		InitByteCodeExecution _ANSI_ARGS_((
-			    Tcl_Interp *interp));
 #ifdef TCL_COMPILE_DEBUG
-static void		PrintByteCodeInfo _ANSI_ARGS_((ByteCode *codePtr));
-static CONST char *	StringForResultCode _ANSI_ARGS_((int result));
-static void		ValidatePcAndStackTop _ANSI_ARGS_((
-			    ByteCode *codePtr, unsigned char *pc,
-			    int stackTop, int stackLowerBound));
+static char *		GetOpcodeName(unsigned char *pc);
+static void		PrintByteCodeInfo(ByteCode *codePtr);
+static const char *	StringForResultCode(int result);
+static void		ValidatePcAndStackTop(ByteCode *codePtr,
+			    unsigned char *pc, int stackTop,
+			    int stackLowerBound, int checkStack);
 #endif /* TCL_COMPILE_DEBUG */
-static int		VerifyExprObjType _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
+static void		DeleteExecStack(ExecStack *esPtr);
+static void		DupExprCodeInternalRep(Tcl_Obj *srcPtr,
+			    Tcl_Obj *copyPtr);
+static void		FreeExprCodeInternalRep(Tcl_Obj *objPtr);
+static ExceptionRange *	GetExceptRangeForPc(unsigned char *pc, int catchOnly,
+			    ByteCode *codePtr);
+static const char *	GetSrcInfoForPc(unsigned char *pc, ByteCode *codePtr,
+			    int *lengthPtr);
+static Tcl_Obj **	GrowEvaluationStack(ExecEnv *eePtr, int growth,
+			    int move);
+static void		IllegalExprOperandType(Tcl_Interp *interp,
+			    unsigned char *pc, Tcl_Obj *opndPtr);
+static void		InitByteCodeExecution(Tcl_Interp *interp);
+/* Useful elsewhere, make available in tclInt.h or stubs? */
+static Tcl_Obj **	StackAllocWords(Tcl_Interp *interp, int numWords);
+static Tcl_Obj **	StackReallocWords(Tcl_Interp *interp, int numWords);
 
 /*
  * The structure below defines a bytecode Tcl object type to hold the
@@ -417,44 +642,6 @@ static Tcl_ObjType exprCodeType = {
     NULL,			/* updateStringProc */
     NULL			/* setFromAnyProc */
 };
-
-/*
- * Table describing the built-in math functions. Entries in this table are
- * indexed by the values of the INST_CALL_BUILTIN_FUNC instruction's
- * operand byte.
- */
-
-BuiltinFunc tclBuiltinFuncTable[] = {
-#ifndef TCL_NO_MATH
-    {"acos", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) acos},
-    {"asin", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) asin},
-    {"atan", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) atan},
-    {"atan2", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) atan2},
-    {"ceil", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) ceil},
-    {"cos", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) cos},
-    {"cosh", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) cosh},
-    {"exp", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) exp},
-    {"floor", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) floor},
-    {"fmod", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) fmod},
-    {"hypot", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) hypot},
-    {"log", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) log},
-    {"log10", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) log10},
-    {"pow", 2, {TCL_DOUBLE, TCL_DOUBLE}, ExprBinaryFunc, (ClientData) pow},
-    {"sin", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) sin},
-    {"sinh", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) sinh},
-    {"sqrt", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) sqrt},
-    {"tan", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) tan},
-    {"tanh", 1, {TCL_DOUBLE}, ExprUnaryFunc, (ClientData) tanh},
-#endif
-    {"abs", 1, {TCL_EITHER}, ExprAbsFunc, 0},
-    {"double", 1, {TCL_EITHER}, ExprDoubleFunc, 0},
-    {"int", 1, {TCL_EITHER}, ExprIntFunc, 0},
-    {"rand", 0, {TCL_EITHER}, ExprRandFunc, 0},	/* NOTE: rand takes no args. */
-    {"round", 1, {TCL_EITHER}, ExprRoundFunc, 0},
-    {"srand", 1, {TCL_INT}, ExprSrandFunc, 0},
-    {"wide", 1, {TCL_EITHER}, ExprWideFunc, 0},
-    {0, 0, {TCL_INT}, 0, 0},
-};
 
 /*
  *----------------------------------------------------------------------
@@ -469,29 +656,28 @@ BuiltinFunc tclBuiltinFuncTable[] = {
  *
  * Side effects:
  *	This procedure initializes the array of instruction names. If
- *	compiling with the TCL_COMPILE_STATS flag, it initializes the
- *	array that counts the executions of each instruction and it
- *	creates the "evalstats" command. It also establishes the link 
- *      between the Tcl "tcl_traceExec" and C "tclTraceExec" variables.
+ *	compiling with the TCL_COMPILE_STATS flag, it initializes the array
+ *	that counts the executions of each instruction and it creates the
+ *	"evalstats" command. It also establishes the link between the Tcl
+ *	"tcl_traceExec" and C "tclTraceExec" variables.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-InitByteCodeExecution(interp)
-    Tcl_Interp *interp;		/* Interpreter for which the Tcl variable
+InitByteCodeExecution(
+    Tcl_Interp *interp)		/* Interpreter for which the Tcl variable
 				 * "tcl_traceExec" is linked to control
 				 * instruction tracing. */
 {
 #ifdef TCL_COMPILE_DEBUG
     if (Tcl_LinkVar(interp, "tcl_traceExec", (char *) &tclTraceExec,
-		    TCL_LINK_INT) != TCL_OK) {
-	panic("InitByteCodeExecution: can't create link for tcl_traceExec variable");
+	    TCL_LINK_INT) != TCL_OK) {
+	Tcl_Panic("InitByteCodeExecution: can't create link for tcl_traceExec variable");
     }
 #endif
-#ifdef TCL_COMPILE_STATS    
-    Tcl_CreateObjCommand(interp, "evalstats", EvalStatsCmd,
-	    (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
+#ifdef TCL_COMPILE_STATS
+    Tcl_CreateObjCommand(interp, "evalstats", EvalStatsCmd, NULL, NULL);
 #endif /* TCL_COMPILE_STATS */
 }
 
@@ -501,18 +687,18 @@ InitByteCodeExecution(interp)
  * TclCreateExecEnv --
  *
  *	This procedure creates a new execution environment for Tcl bytecode
- *	execution. An ExecEnv points to a Tcl evaluation stack. An ExecEnv
- *	is typically created once for each Tcl interpreter (Interp
- *	structure) and recursively passed to TclExecuteByteCode to execute
- *	ByteCode sequences for nested commands.
+ *	execution. An ExecEnv points to a Tcl evaluation stack. An ExecEnv is
+ *	typically created once for each Tcl interpreter (Interp structure) and
+ *	recursively passed to TclExecuteByteCode to execute ByteCode sequences
+ *	for nested commands.
  *
  * Results:
  *	A newly allocated ExecEnv is returned. This points to an empty
  *	evaluation stack of the standard initial size.
  *
  * Side effects:
- *	The bytecode interpreter is also initialized here, as this
- *	procedure will be called before any call to TclExecuteByteCode.
+ *	The bytecode interpreter is also initialized here, as this procedure
+ *	will be called before any call to TclExecuteByteCode.
  *
  *----------------------------------------------------------------------
  */
@@ -520,33 +706,25 @@ InitByteCodeExecution(interp)
 #define TCL_STACK_INITIAL_SIZE 2000
 
 ExecEnv *
-TclCreateExecEnv(interp)
-    Tcl_Interp *interp;		/* Interpreter for which the execution
+TclCreateExecEnv(
+    Tcl_Interp *interp)		/* Interpreter for which the execution
 				 * environment is being created. */
 {
     ExecEnv *eePtr = (ExecEnv *) ckalloc(sizeof(ExecEnv));
-    Tcl_Obj **stackPtr;
+    ExecStack *esPtr = (ExecStack *) ckalloc(sizeof(ExecStack)
+	    + (size_t) (TCL_STACK_INITIAL_SIZE-1) * sizeof(Tcl_Obj *));
 
-    stackPtr = (Tcl_Obj **)
-	ckalloc((size_t) (TCL_STACK_INITIAL_SIZE * sizeof(Tcl_Obj *)));
+    eePtr->execStackPtr = esPtr;
+    TclNewBooleanObj(eePtr->constants[0], 0);
+    Tcl_IncrRefCount(eePtr->constants[0]);
+    TclNewBooleanObj(eePtr->constants[1], 1);
+    Tcl_IncrRefCount(eePtr->constants[1]);
 
-    /*
-     * Use the bottom pointer to keep a reference count; the 
-     * execution environment holds a reference.
-     */
-
-    stackPtr++;
-    eePtr->stackPtr = stackPtr;
-    stackPtr[-1] = (Tcl_Obj *) ((char *) 1);
-
-    eePtr->stackTop = -1;
-    eePtr->stackEnd = (TCL_STACK_INITIAL_SIZE - 2);
-
-    eePtr->errorInfo = Tcl_NewStringObj("::errorInfo", -1);
-    Tcl_IncrRefCount(eePtr->errorInfo);
-
-    eePtr->errorCode = Tcl_NewStringObj("::errorCode", -1);
-    Tcl_IncrRefCount(eePtr->errorCode);
+    esPtr->prevPtr = NULL;
+    esPtr->nextPtr = NULL;
+    esPtr->markerPtr = NULL;
+    esPtr->endPtr = &esPtr->stackWords[TCL_STACK_INITIAL_SIZE-1];
+    esPtr->tosPtr = &esPtr->stackWords[-1];
 
     Tcl_MutexLock(&execMutex);
     if (!execInitialized) {
@@ -571,23 +749,50 @@ TclCreateExecEnv(interp)
  *	None.
  *
  * Side effects:
- *	Storage for an ExecEnv and its contained storage (e.g. the
- *	evaluation stack) is freed.
+ *	Storage for an ExecEnv and its contained storage (e.g. the evaluation
+ *	stack) is freed.
  *
  *----------------------------------------------------------------------
  */
 
+static void
+DeleteExecStack(
+    ExecStack *esPtr)
+{
+    if (esPtr->markerPtr) {
+	Tcl_Panic("freeing an execStack which is still in use");
+    }
+
+    if (esPtr->prevPtr) {
+	esPtr->prevPtr->nextPtr = esPtr->nextPtr;
+    }
+    if (esPtr->nextPtr) {
+	esPtr->nextPtr->prevPtr = esPtr->prevPtr;
+    }
+    ckfree((char *) esPtr);
+}
+
 void
-TclDeleteExecEnv(eePtr)
-    ExecEnv *eePtr;		/* Execution environment to free. */
+TclDeleteExecEnv(
+    ExecEnv *eePtr)		/* Execution environment to free. */
 {
-    if (eePtr->stackPtr[-1] == (Tcl_Obj *) ((char *) 1)) {
-	ckfree((char *) (eePtr->stackPtr-1));
-    } else {
-	panic("ERROR: freeing an execEnv whose stack is still in use.\n");
+    ExecStack *esPtr = eePtr->execStackPtr, *tmpPtr;
+
+    /*
+     * Delete all stacks in this exec env.
+     */
+
+    while (esPtr->nextPtr) {
+	esPtr = esPtr->nextPtr;
+    }
+    while (esPtr) {
+	tmpPtr = esPtr;
+	esPtr = tmpPtr->prevPtr;
+	DeleteExecStack(tmpPtr);
     }
-    TclDecrRefCount(eePtr->errorInfo);
-    TclDecrRefCount(eePtr->errorCode);
+
+    TclDecrRefCount(eePtr->constants[0]);
+    TclDecrRefCount(eePtr->constants[1]);
     ckfree((char *) eePtr);
 }
 
@@ -596,21 +801,21 @@ TclDeleteExecEnv(eePtr)
  *
  * TclFinalizeExecution --
  *
- *	Finalizes the execution environment setup so that it can be
- *	later reinitialized.
+ *	Finalizes the execution environment setup so that it can be later
+ *	reinitialized.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	After this call, the next time TclCreateExecEnv will be called
- *	it will call InitByteCodeExecution.
+ *	After this call, the next time TclCreateExecEnv will be called it will
+ *	call InitByteCodeExecution.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclFinalizeExecution()
+TclFinalizeExecution(void)
 {
     Tcl_MutexLock(&execMutex);
     execInitialized = 0;
@@ -619,69 +824,326 @@ TclFinalizeExecution()
 }
 
 /*
+ * Auxiliary code to insure that GrowEvaluationStack always returns correctly 
+ * aligned memory.
+ *
+ * WALLOCALIGN represents the alignment reqs in words, just as TCL_ALLOCALIGN
+ * represents the reqs in bytes. This assumes that TCL_ALLOCALIGN is a
+ * multiple of the wordsize 'sizeof(Tcl_Obj *)'. 
+ */
+
+#define WALLOCALIGN \
+    (TCL_ALLOCALIGN/sizeof(Tcl_Obj *))
+
+/*
+ * OFFSET computes how many words have to be skipped until the next aligned
+ * word. Note that we are only interested in the low order bits of ptr, so
+ * that any possible information loss in PTR2INT is of no consequence.
+ */
+
+static inline int
+OFFSET(
+    void *ptr)
+{
+    int mask = TCL_ALLOCALIGN-1;
+    int base = PTR2INT(ptr) & mask;
+    return (TCL_ALLOCALIGN - base)/sizeof(Tcl_Obj *);
+}
+
+/*
+ * Given a marker, compute where the following aligned memory starts. 
+ */
+
+#define MEMSTART(markerPtr)			\
+    ((markerPtr) + OFFSET(markerPtr))
+
+
+/*
  *----------------------------------------------------------------------
  *
  * GrowEvaluationStack --
  *
- *	This procedure grows a Tcl evaluation stack stored in an ExecEnv.
+ *	This procedure grows a Tcl evaluation stack stored in an ExecEnv,
+ *	copying over the words since the last mark if so requested. A mark is
+ *	set at the beginning of the new area when no copying is requested.
  *
  * Results:
- *	None.
+ *	Returns a pointer to the first usable word in the (possibly) grown
+ *	stack.
  *
  * Side effects:
- *	The size of the evaluation stack is doubled.
+ *	The size of the evaluation stack may be grown, a marker is set
  *
  *----------------------------------------------------------------------
  */
 
-static void
-GrowEvaluationStack(eePtr)
-    register ExecEnv *eePtr; /* Points to the ExecEnv with an evaluation
-			      * stack to enlarge. */
+static Tcl_Obj **
+GrowEvaluationStack(
+    ExecEnv *eePtr,		/* Points to the ExecEnv with an evaluation
+				 * stack to enlarge. */
+    int growth,			/* How much larger than the current used
+				 * size. */
+    int move)			/* 1 if move words since last marker. */
 {
+    ExecStack *esPtr = eePtr->execStackPtr, *oldPtr = NULL;
+    int newBytes, newElems, currElems;
+    int needed = growth - (esPtr->endPtr - esPtr->tosPtr);
+    Tcl_Obj **markerPtr = esPtr->markerPtr, **memStart;
+    int moveWords = 0;
+
+    if (move) {
+	if (!markerPtr) {
+	    Tcl_Panic("STACK: Reallocating with no previous alloc");
+	}
+	if (needed <= 0) {
+	    return MEMSTART(markerPtr);
+	}
+    } else {
+	Tcl_Obj **tmpMarkerPtr = esPtr->tosPtr + 1;
+	int offset = OFFSET(tmpMarkerPtr);
+
+	if (needed + offset < 0) {
+	    /*
+	     * Put a marker pointing to the previous marker in this stack, and 
+	     * store it in esPtr as the current marker. Return a pointer to
+	     * the start of aligned memory.
+	     */
+
+	    esPtr->markerPtr = tmpMarkerPtr;
+	    memStart = tmpMarkerPtr + offset; 
+	    esPtr->tosPtr = memStart - 1;
+	    *esPtr->markerPtr = (Tcl_Obj *) markerPtr;
+	    return memStart;
+	}
+    }
+
     /*
-     * The current Tcl stack elements are stored from eePtr->stackPtr[0]
-     * to eePtr->stackPtr[eePtr->stackEnd] (inclusive).
+     * Reset move to hold the number of words to be moved to new stack (if
+     * any) and growth to hold the complete stack requirements: add one for
+     * the marker, (WALLOCALIGN-1) for the maximal possible offset.
      */
 
-    int currElems = (eePtr->stackEnd + 1);
-    int newElems  = 2*currElems;
-    int currBytes = currElems * sizeof(Tcl_Obj *);
-    int newBytes  = 2*currBytes;
-    Tcl_Obj **newStackPtr = (Tcl_Obj **) ckalloc((unsigned) newBytes);
-    Tcl_Obj **oldStackPtr = eePtr->stackPtr;
+    if (move) {
+	moveWords = esPtr->tosPtr - MEMSTART(markerPtr) + 1;
+    }
+    needed = growth + moveWords + WALLOCALIGN;
 
     /*
-     * We keep the stack reference count as a (char *), as that
-     * works nicely as a portable pointer-sized counter.
+     * Check if there is enough room in the next stack (if there is one, it
+     * should be both empty and the last one!)
      */
 
-    char *refCount = (char *) oldStackPtr[-1];
+    if (esPtr->nextPtr) {
+	oldPtr = esPtr;
+	esPtr = oldPtr->nextPtr;
+	currElems = esPtr->endPtr - &esPtr->stackWords[-1];
+	if (esPtr->markerPtr || (esPtr->tosPtr != &esPtr->stackWords[-1])) {
+	    Tcl_Panic("STACK: Stack after current is in use");
+	}
+	if (esPtr->nextPtr) {
+	    Tcl_Panic("STACK: Stack after current is not last");
+	}
+	if (needed <= currElems) {
+	    goto newStackReady;
+	}
+	DeleteExecStack(esPtr);
+	esPtr = oldPtr;
+    } else {
+	currElems = esPtr->endPtr - &esPtr->stackWords[-1];
+    }
 
     /*
-     * Copy the existing stack items to the new stack space, free the old
-     * storage if appropriate, and record the refCount of the new stack
-     * held by the environment.
+     * We need to allocate a new stack! It needs to store 'growth' words,
+     * including the elements to be copied over and the new marker.
      */
- 
-    newStackPtr++;
-    memcpy((VOID *) newStackPtr, (VOID *) oldStackPtr,
-	   (size_t) currBytes);
 
-    if (refCount == (char *) 1) {
-	ckfree((VOID *) (oldStackPtr-1));
-    } else {
-	/*
-	 * Remove the reference corresponding to the
-	 * environment pointer.
-	 */
-	
-	oldStackPtr[-1] = (Tcl_Obj *) (refCount-1);
+    newElems = 2*currElems;
+    while (needed > newElems) {
+	newElems *= 2;
+    }
+    newBytes = sizeof (ExecStack) + (newElems-1) * sizeof(Tcl_Obj *);
+
+    oldPtr = esPtr;
+    esPtr = (ExecStack *) ckalloc(newBytes);
+
+    oldPtr->nextPtr = esPtr;
+    esPtr->prevPtr = oldPtr;
+    esPtr->nextPtr = NULL;
+    esPtr->endPtr = &esPtr->stackWords[newElems-1];
+
+  newStackReady:
+    eePtr->execStackPtr = esPtr;
+
+    /*
+     * Store a NULL marker at the beginning of the stack, to indicate that
+     * this is the first marker in this stack and that rewinding to here
+     * should actually be a return to the previous stack.
+     */
+
+    esPtr->stackWords[0] = NULL;
+    esPtr->markerPtr = &esPtr->stackWords[0];
+    memStart = MEMSTART(esPtr->markerPtr);
+    esPtr->tosPtr = memStart - 1;
+    
+    if (move) {
+	memcpy(memStart, MEMSTART(markerPtr), moveWords*sizeof(Tcl_Obj *));
+	esPtr->tosPtr += moveWords;
+	oldPtr->markerPtr = (Tcl_Obj **) *markerPtr;
+	oldPtr->tosPtr = markerPtr-1;
+    }
+
+    /*
+     * Free the old stack if it is now unused.
+     */
+
+    if (!oldPtr->markerPtr) {
+	DeleteExecStack(oldPtr);
+    }
+
+    return memStart;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * TclStackAlloc, TclStackRealloc, TclStackFree --
+ *
+ *	Allocate memory from the execution stack; it has to be returned later
+ *	with a call to TclStackFree.
+ *
+ * Results:
+ *	A pointer to the first byte allocated, or panics if the allocation did
+ *	not succeed.
+ *
+ * Side effects:
+ *	The execution stack may be grown.
+ *
+ *--------------------------------------------------------------
+ */
+
+static Tcl_Obj **
+StackAllocWords(
+    Tcl_Interp *interp,
+    int numWords)
+{
+    /*
+     * Note that GrowEvaluationStack sets a marker in the stack. This marker
+     * is read when rewinding, e.g., by TclStackFree.
+     */
+
+    Interp *iPtr = (Interp *) interp;
+    ExecEnv *eePtr = iPtr->execEnvPtr;
+    Tcl_Obj **resPtr = GrowEvaluationStack(eePtr, numWords, 0);
+
+    eePtr->execStackPtr->tosPtr += numWords;
+    return resPtr;
+}
+
+static Tcl_Obj **
+StackReallocWords(
+    Tcl_Interp *interp,
+    int numWords)
+{
+    Interp *iPtr = (Interp *) interp;
+    ExecEnv *eePtr = iPtr->execEnvPtr;
+    Tcl_Obj **resPtr = GrowEvaluationStack(eePtr, numWords, 1);
+
+    eePtr->execStackPtr->tosPtr += numWords;
+    return resPtr;
+}
+
+void
+TclStackFree(
+    Tcl_Interp *interp,
+    void *freePtr)
+{
+    Interp *iPtr = (Interp *) interp;
+    ExecEnv *eePtr;
+    ExecStack *esPtr;
+    Tcl_Obj **markerPtr;
+
+    if (iPtr == NULL || iPtr->execEnvPtr == NULL) {
+	ckfree((char *) freePtr);
+	return;
     }
 
-    eePtr->stackPtr = newStackPtr;
-    eePtr->stackEnd = (newElems - 2); /* index of last usable item */
-    newStackPtr[-1] = (Tcl_Obj *) ((char *) 1);	
+    /*
+     * Rewind the stack to the previous marker position. The current marker,
+     * as set in the last call to GrowEvaluationStack, contains a pointer to
+     * the previous marker.
+     */
+
+    eePtr = iPtr->execEnvPtr;
+    esPtr = eePtr->execStackPtr;
+    markerPtr = esPtr->markerPtr;
+
+    if (MEMSTART(markerPtr) != (Tcl_Obj **)freePtr) {
+	Tcl_Panic("TclStackFree: incorrect freePtr. Call out of sequence?");
+    }
+
+    esPtr->tosPtr = markerPtr-1;
+    esPtr->markerPtr = (Tcl_Obj **) *markerPtr;
+    if (*markerPtr) {
+ 	return;
+    }
+
+    /*
+     * Return to previous stack.
+     */
+
+    esPtr->tosPtr = &esPtr->stackWords[-1];
+    if (esPtr->prevPtr) {
+ 	eePtr->execStackPtr = esPtr->prevPtr;
+    }
+    if (esPtr->nextPtr) {
+ 	if (!esPtr->prevPtr) {
+ 	    eePtr->execStackPtr = esPtr->nextPtr;
+ 	}
+ 	DeleteExecStack(esPtr);
+    }
+}
+
+void *
+TclStackAlloc(
+    Tcl_Interp *interp,
+    int numBytes)
+{
+    Interp *iPtr = (Interp *) interp;
+    int numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *);
+
+    if (iPtr == NULL || iPtr->execEnvPtr == NULL) {
+	return (void *) ckalloc(numBytes);
+    }
+
+    return (void *) StackAllocWords(interp, numWords);
+}
+
+void *
+TclStackRealloc(
+    Tcl_Interp *interp,
+    void *ptr,
+    int numBytes)
+{
+    Interp *iPtr = (Interp *) interp;
+    ExecEnv *eePtr;
+    ExecStack *esPtr;
+    Tcl_Obj **markerPtr;
+    int numWords;
+
+    if (iPtr == NULL || iPtr->execEnvPtr == NULL) {
+	return (void *) ckrealloc((char *) ptr, numBytes);
+    }
+
+    eePtr = iPtr->execEnvPtr;
+    esPtr = eePtr->execStackPtr;
+    markerPtr = esPtr->markerPtr;
+
+    if (MEMSTART(markerPtr) != (Tcl_Obj **)ptr) {
+	Tcl_Panic("TclStackRealloc: incorrect ptr. Call out of sequence?");
+    }
+
+    numWords = (numBytes + (sizeof(Tcl_Obj *) - 1))/sizeof(Tcl_Obj *);
+    return (void *) StackReallocWords(interp, numWords);
 }
 
 /*
@@ -692,150 +1154,97 @@ GrowEvaluationStack(eePtr)
  *	Evaluate an expression in a Tcl_Obj.
  *
  * Results:
- *	A standard Tcl object result. If the result is other than TCL_OK,
- *	then the interpreter's result contains an error message. If the
- *	result is TCL_OK, then a pointer to the expression's result value
- *	object is stored in resultPtrPtr. In that case, the object's ref
- *	count is incremented to reflect the reference returned to the
- *	caller; the caller is then responsible for the resulting object
- *	and must, for example, decrement the ref count when it is finished
- *	with the object.
+ *	A standard Tcl object result. If the result is other than TCL_OK, then
+ *	the interpreter's result contains an error message. If the result is
+ *	TCL_OK, then a pointer to the expression's result value object is
+ *	stored in resultPtrPtr. In that case, the object's ref count is
+ *	incremented to reflect the reference returned to the caller; the
+ *	caller is then responsible for the resulting object and must, for
+ *	example, decrement the ref count when it is finished with the object.
  *
  * Side effects:
- *	Any side effects caused by subcommands in the expression, if any.
- *	The interpreter result is not modified unless there is an error.
+ *	Any side effects caused by subcommands in the expression, if any. The
+ *	interpreter result is not modified unless there is an error.
  *
  *--------------------------------------------------------------
  */
 
 int
-Tcl_ExprObj(interp, objPtr, resultPtrPtr)
-    Tcl_Interp *interp;		/* Context in which to evaluate the
+Tcl_ExprObj(
+    Tcl_Interp *interp,		/* Context in which to evaluate the
 				 * expression. */
-    register Tcl_Obj *objPtr;	/* Points to Tcl object containing
-				 * expression to evaluate. */
-    Tcl_Obj **resultPtrPtr;	/* Where the Tcl_Obj* that is the expression
+    register Tcl_Obj *objPtr,	/* Points to Tcl object containing expression
+				 * to evaluate. */
+    Tcl_Obj **resultPtrPtr)	/* Where the Tcl_Obj* that is the expression
 				 * result is stored if no errors occur. */
 {
     Interp *iPtr = (Interp *) interp;
-    CompileEnv compEnv;		/* Compilation environment structure
-				 * allocated in frame. */
-    LiteralTable *localTablePtr = &(compEnv.localLitTable);
+    CompileEnv compEnv;		/* Compilation environment structure allocated
+				 * in frame. */
     register ByteCode *codePtr = NULL;
-    				/* Tcl Internal type of bytecode.
-				 * Initialized to avoid compiler warning. */
-    Tcl_Obj *saveObjPtr;
-    char *string;
-    int length, result;
+    				/* Tcl Internal type of bytecode. Initialized
+				 * to avoid compiler warning. */
+    int result;
 
     /*
-     * First handle some common expressions specially.
+     * Execute the expression after first saving the interpreter's result.
      */
 
-    string = Tcl_GetStringFromObj(objPtr, &length);
-    if (length == 1) {
-	if (*string == '0') {
-	    *resultPtrPtr = Tcl_NewLongObj(0);
-	    Tcl_IncrRefCount(*resultPtrPtr);
-	    return TCL_OK;
-	} else if (*string == '1') {
-	    *resultPtrPtr = Tcl_NewLongObj(1);
-	    Tcl_IncrRefCount(*resultPtrPtr);
-	    return TCL_OK;
-	}
-    } else if ((length == 2) && (*string == '!')) {
-	if (*(string+1) == '0') {
-	    *resultPtrPtr = Tcl_NewLongObj(1);
-	    Tcl_IncrRefCount(*resultPtrPtr);
-	    return TCL_OK;
-	} else if (*(string+1) == '1') {
-	    *resultPtrPtr = Tcl_NewLongObj(0);
-	    Tcl_IncrRefCount(*resultPtrPtr);
-	    return TCL_OK;
-	}
-    }
-
-    /*
-     * Compile and execute the expression after saving the interp's result.
-     */
-    
-    saveObjPtr = Tcl_GetObjResult(interp);
+    Tcl_Obj *saveObjPtr = Tcl_GetObjResult(interp);
     Tcl_IncrRefCount(saveObjPtr);
 
     /*
      * Get the expression ByteCode from the object. If it exists, make sure it
      * is valid in the current context.
      */
-
     if (objPtr->typePtr == &exprCodeType) {
-	Namespace *namespacePtr = iPtr->varFramePtr ?
-		iPtr->varFramePtr->nsPtr : iPtr->globalNsPtr;
+	Namespace *namespacePtr = iPtr->varFramePtr->nsPtr;
 
-	codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
+	codePtr = (ByteCode *) objPtr->internalRep.twoPtrValue.ptr1;
 	if (((Interp *) *codePtr->interpHandle != iPtr)
-	        || (codePtr->compileEpoch != iPtr->compileEpoch)
-	        || (codePtr->nsPtr != namespacePtr)
-	        || (codePtr->nsEpoch != namespacePtr->resolverEpoch)) {
+		|| (codePtr->compileEpoch != iPtr->compileEpoch)
+		|| (codePtr->nsPtr != namespacePtr)
+		|| (codePtr->nsEpoch != namespacePtr->resolverEpoch)) {
 	    objPtr->typePtr->freeIntRepProc(objPtr);
 	    objPtr->typePtr = (Tcl_ObjType *) NULL;
 	}
     }
     if (objPtr->typePtr != &exprCodeType) {
-#ifndef TCL_TIP280
-	TclInitCompileEnv(interp, &compEnv, string, length);
-#else
-	/* TIP #280 : No invoker (yet) - Expression compilation */
-	TclInitCompileEnv(interp, &compEnv, string, length, NULL, 0);
-#endif
-	result = TclCompileExpr(interp, string, length, &compEnv);
-
 	/*
-	 * Free the compilation environment's literal table bucket array if
-	 * it was dynamically allocated. 
+	 * TIP #280: No invoker (yet) - Expression compilation.
 	 */
 
-	if (localTablePtr->buckets != localTablePtr->staticBuckets) {
-	    ckfree((char *) localTablePtr->buckets);
-	}
-    
-	if (result != TCL_OK) {
-	    /*
-	     * Compilation errors. Free storage allocated for compilation.
-	     */
+	int length;
+	const char *string = TclGetStringFromObj(objPtr, &length);
 
-#ifdef TCL_COMPILE_DEBUG
-	    TclVerifyLocalLiteralTable(&compEnv);
-#endif /*TCL_COMPILE_DEBUG*/
-    
-	    TclFreeCompileEnv(&compEnv);
-	    goto done;
-	}
+	TclInitCompileEnv(interp, &compEnv, string, length, NULL, 0);
+	TclCompileExpr(interp, string, length, &compEnv, 0);
 
 	/*
-	 * Successful compilation. If the expression yielded no
-	 * instructions, push an zero object as the expression's result.
+	 * Successful compilation. If the expression yielded no instructions,
+	 * push an zero object as the expression's result.
 	 */
-	    
+
 	if (compEnv.codeNext == compEnv.codeStart) {
-	    TclEmitPush(TclRegisterLiteral(&compEnv, "0", 1, /*onHeap*/ 0),
-	            &compEnv);
+	    TclEmitPush(TclRegisterNewLiteral(&compEnv, "0", 1),
+		    &compEnv);
 	}
-	    
+
 	/*
 	 * Add a "done" instruction as the last instruction and change the
-	 * object into a ByteCode object. Ownership of the literal objects
-	 * and aux data items is given to the ByteCode object.
+	 * object into a ByteCode object. Ownership of the literal objects and
+	 * aux data items is given to the ByteCode object.
 	 */
 
-	compEnv.numSrcBytes = iPtr->termOffset;
 	TclEmitOpcode(INST_DONE, &compEnv);
 	TclInitByteCodeObj(objPtr, &compEnv);
 	objPtr->typePtr = &exprCodeType;
 	TclFreeCompileEnv(&compEnv);
-	codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
+	codePtr = (ByteCode *) objPtr->internalRep.twoPtrValue.ptr1;
 #ifdef TCL_COMPILE_DEBUG
 	if (tclTraceCompile == 2) {
 	    TclPrintByteCodeObj(interp, objPtr);
+	    fflush(stdout);
 	}
 #endif /* TCL_COMPILE_DEBUG */
     }
@@ -846,30 +1255,29 @@ Tcl_ExprObj(interp, objPtr, resultPtrPtr)
      * Increment the code's ref count while it is being executed. If
      * afterwards no references to it remain, free the code.
      */
-    
+
     codePtr->refCount++;
     result = TclExecuteByteCode(interp, codePtr);
     codePtr->refCount--;
     if (codePtr->refCount <= 0) {
 	TclCleanupByteCode(codePtr);
     }
-    
+
     /*
-     * If the expression evaluated successfully, store a pointer to its
-     * value object in resultPtrPtr then restore the old interpreter result.
-     * We increment the object's ref count to reflect the reference that we
-     * are returning to the caller. We also decrement the ref count of the
-     * interpreter's result object after calling Tcl_SetResult since we
-     * next store into that field directly.
+     * If the expression evaluated successfully, store a pointer to its value
+     * object in resultPtrPtr then restore the old interpreter result. We
+     * increment the object's ref count to reflect the reference that we are
+     * returning to the caller. We also decrement the ref count of the
+     * interpreter's result object after calling Tcl_SetResult since we next
+     * store into that field directly.
      */
-    
+
     if (result == TCL_OK) {
 	*resultPtrPtr = iPtr->objResultPtr;
 	Tcl_IncrRefCount(iPtr->objResultPtr);
-	
+
 	Tcl_SetObjResult(interp, saveObjPtr);
     }
-done:
     TclDecrRefCount(saveObjPtr);
     return result;
 }
@@ -883,14 +1291,14 @@ done:
  *	bytecode.  We do not copy the bytecode intrep.  Instead, we
  *	return without setting copyPtr->typePtr, so the copy is a plain
  *	string copy of the expression value, and if it is to be used
- *	as a compiled expression, it will just need a recompile.
+ * 	as a compiled expression, it will just need a recompile.
  *
  *	This makes sense, because with Tcl's copy-on-write practices,
  *	the usual (only?) time Tcl_DuplicateObj() will be called is
  *	when the copy is about to be modified, which would invalidate
- *	any copied bytecode anyway.  The only reason it might make sense
- *	to copy the bytecode is if we had some modifying routines that
- *	operated directly on the intrep, like we do for lists and dicts.
+ * 	any copied bytecode anyway.  The only reason it might make sense
+ * 	to copy the bytecode is if we had some modifying routines that
+ * 	operated directly on the intrep, like we do for lists and dicts.
  *
  * Results:
  *	None.
@@ -915,7 +1323,7 @@ DupExprCodeInternalRep(
  * FreeExprCodeInternalRep --
  *
  *	Part of the Tcl object type implementation for Tcl expression
- *	bytecode.  Frees the storage allocated to hold the internal rep,
+ * 	bytecode.  Frees the storage allocated to hold the internal rep,
  *	unless ref counts indicate bytecode execution is still in progress.
  *
  * Results:
@@ -930,14 +1338,13 @@ static void
 FreeExprCodeInternalRep(
     Tcl_Obj *objPtr)
 {
-    ByteCode *codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
+    ByteCode *codePtr = (ByteCode *) objPtr->internalRep.twoPtrValue.ptr1;
 
     codePtr->refCount--;
     if (codePtr->refCount <= 0) {
 	TclCleanupByteCode(codePtr);
     }
     objPtr->typePtr = NULL;
-    objPtr->internalRep.otherValuePtr = NULL;
 }
 
 /*
@@ -945,14 +1352,13 @@ FreeExprCodeInternalRep(
  *
  * TclCompEvalObj --
  *
- *	This procedure evaluates the script contained in a Tcl_Obj by 
- *      first compiling it and then passing it to TclExecuteByteCode.
+ *	This procedure evaluates the script contained in a Tcl_Obj by first
+ *	compiling it and then passing it to TclExecuteByteCode.
  *
  * Results:
- *	The return value is one of the return codes defined in tcl.h
- *	(such as TCL_OK), and interp->objResultPtr refers to a Tcl object
- *	that either contains the result of executing the code or an
- *	error message.
+ *	The return value is one of the return codes defined in tcl.h (such as
+ *	TCL_OK), and interp->objResultPtr refers to a Tcl object that either
+ *	contains the result of executing the code or an error message.
  *
  * Side effects:
  *	Almost certainly, depending on the ByteCode's instructions.
@@ -961,174 +1367,327 @@ FreeExprCodeInternalRep(
  */
 
 int
-#ifndef TCL_TIP280
-TclCompEvalObj(interp, objPtr)
-#else
-TclCompEvalObj(interp, objPtr, invoker, word)
-#endif
-    Tcl_Interp *interp;
-    Tcl_Obj *objPtr;
-#ifdef TCL_TIP280
-    CONST CmdFrame* invoker; /* Frame of the command doing the eval  */
-    int             word;    /* Index of the word which is in objPtr */
-#endif
+TclCompEvalObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr,
+    const CmdFrame *invoker,
+    int word)
 {
     register Interp *iPtr = (Interp *) interp;
-    register ByteCode* codePtr;		/* Tcl Internal type of bytecode. */
-    int oldCount = iPtr->cmdCount;	/* Used to tell whether any commands
-					 * at all were executed. */
-    char *script;
-    int numSrcBytes;
+    register ByteCode *codePtr;	/* Tcl Internal type of bytecode. */
     int result;
     Namespace *namespacePtr;
 
-
     /*
-     * Check that the interpreter is ready to execute scripts
+     * Check that the interpreter is ready to execute scripts. Note that we
+     * manage the interp's runlevel here: it is a small white lie (maybe), but
+     * saves a ++/-- pair at each invocation. Amazingly enough, the impact on
+     * performance is noticeable.
      */
 
     iPtr->numLevels++;
     if (TclInterpReady(interp) == TCL_ERROR) {
-	iPtr->numLevels--;
-	return TCL_ERROR;
+	result = TCL_ERROR;
+	goto done;
     }
 
-    if (iPtr->varFramePtr != NULL) {
-        namespacePtr = iPtr->varFramePtr->nsPtr;
-    } else {
-        namespacePtr = iPtr->globalNsPtr;
-    }
+    namespacePtr = iPtr->varFramePtr->nsPtr;
 
-    /* 
-     * If the object is not already of tclByteCodeType, compile it (and
-     * reset the compilation flags in the interpreter; this should be 
-     * done after any compilation).
-     * Otherwise, check that it is "fresh" enough.
+    /*
+     * If the object is not already of tclByteCodeType, compile it (and reset
+     * the compilation flags in the interpreter; this should be done after any
+     * compilation). Otherwise, check that it is "fresh" enough.
      */
 
-    if (objPtr->typePtr != &tclByteCodeType) {
-        recompileObj:
-	iPtr->errorLine = 1; 
-
-#ifdef TCL_TIP280
-	/* TIP #280. Remember the invoker for a moment in the interpreter
-	 * structures so that the byte code compiler can pick it up when
-	 * initializing the compilation environment, i.e. the extended
-	 * location information.
-	 */
-
-	iPtr->invokeCmdFramePtr = invoker;
-	iPtr->invokeWord        = word;
-#endif
-	result = tclByteCodeType.setFromAnyProc(interp, objPtr);
-#ifdef TCL_TIP280
-	iPtr->invokeCmdFramePtr = NULL;
-#endif
-
-	if (result != TCL_OK) {
-	    iPtr->numLevels--;
-	    return result;
-	}
-	codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
-    } else {
+    if (objPtr->typePtr == &tclByteCodeType) {
 	/*
-	 * Make sure the Bytecode hasn't been invalidated by, e.g., someone 
-	 * redefining a command with a compile procedure (this might make the 
-	 * compiled code wrong). 
-	 * The object needs to be recompiled if it was compiled in/for a 
-	 * different interpreter, or for a different namespace, or for the 
-	 * same namespace but with different name resolution rules. 
-	 * Precompiled objects, however, are immutable and therefore
-	 * they are not recompiled, even if the epoch has changed.
+	 * Make sure the Bytecode hasn't been invalidated by, e.g., someone
+	 * redefining a command with a compile procedure (this might make the
+	 * compiled code wrong). The object needs to be recompiled if it was
+	 * compiled in/for a different interpreter, or for a different
+	 * namespace, or for the same namespace but with different name
+	 * resolution rules. Precompiled objects, however, are immutable and
+	 * therefore they are not recompiled, even if the epoch has changed.
 	 *
 	 * To be pedantically correct, we should also check that the
 	 * originating procPtr is the same as the current context procPtr
-	 * (assuming one exists at all - none for global level).  This
-	 * code is #def'ed out because [info body] was changed to never
-	 * return a bytecode type object, which should obviate us from
-	 * the extra checks here.
+	 * (assuming one exists at all - none for global level). This code is
+	 * #def'ed out because [info body] was changed to never return a
+	 * bytecode type object, which should obviate us from the extra checks
+	 * here.
 	 */
-	codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
+
+	codePtr = (ByteCode *) objPtr->internalRep.twoPtrValue.ptr1;
 	if (((Interp *) *codePtr->interpHandle != iPtr)
-	        || (codePtr->compileEpoch != iPtr->compileEpoch)
-#ifdef CHECK_PROC_ORIGINATION	/* [Bug: 3412 Pedantic] */
-		|| (codePtr->procPtr != NULL && !(iPtr->varFramePtr &&
-			iPtr->varFramePtr->procPtr == codePtr->procPtr))
-#endif
-	        || (codePtr->nsPtr != namespacePtr)
-	        || (codePtr->nsEpoch != namespacePtr->resolverEpoch)) {
-            if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
-                if ((Interp *) *codePtr->interpHandle != iPtr) {
-                    panic("Tcl_EvalObj: compiled script jumped interps");
-                }
-	        codePtr->compileEpoch = iPtr->compileEpoch;
-            } else {
+		|| (codePtr->compileEpoch != iPtr->compileEpoch)
+		|| (codePtr->nsPtr != namespacePtr)
+		|| (codePtr->nsEpoch != namespacePtr->resolverEpoch)) {
+	    if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
+		if ((Interp *) *codePtr->interpHandle != iPtr) {
+		    Tcl_Panic("Tcl_EvalObj: compiled script jumped interps");
+		}
+		codePtr->compileEpoch = iPtr->compileEpoch;
+	    } else {
 		/*
-		 * This byteCode is invalid: free it and recompile
+		 * This byteCode is invalid: free it and recompile.
 		 */
-                tclByteCodeType.freeIntRepProc(objPtr);
+
+		objPtr->typePtr->freeIntRepProc(objPtr);
 		goto recompileObj;
 	    }
 	}
-    }
 
-    /*
-     * Execute the commands. If the code was compiled from an empty string,
-     * don't bother executing the code.
-     */
+	/*
+	 * #280.
+	 * Literal sharing fix. This part of the fix is not required by 8.4
+	 * because it eval-directs any literals, so just saving the argument
+	 * locations per command in bytecode is enough, embedded 'eval'
+	 * commands, etc. get the correct information.
+	 *
+	 * It had be backported for 8.5 because we can force the separate
+	 * compiling of a literal (in a proc body) by putting it into a control
+	 * command with dynamic pieces, and then such literal may be shared
+	 * and require their line-information to be reset, as for 8.6, as
+	 * described below.
+	 *
+	 * In 8.6 all the embedded script are compiled, and the resulting
+	 * bytecode stored in the literal. Now the shared literal has bytecode
+	 * with location data for _one_ particular location this literal is
+	 * found at. If we get executed from a different location the bytecode
+	 * has to be recompiled to get the correct locations. Not doing this
+	 * will execute the saved bytecode with data for a different location,
+	 * causing 'info frame' to point to the wrong place in the sources.
+	 *
+	 * Future optimizations ...
+	 * (1) Save the location data (ExtCmdLoc) keyed by start line. In that
+	 *     case we recompile once per location of the literal, but not
+	 *     continously, because the moment we have all locations we do not
+	 *     need to recompile any longer.
+	 *
+	 * (2) Alternative: Do not recompile, tell the execution engine the
+	 *     offset between saved starting line and actual one. Then modify
+	 *     the users to adjust the locations they have by this offset.
+	 *
+	 * (3) Alternative 2: Do not fully recompile, adjust just the location
+	 *     information.
+	 */
+
+	if (invoker) {
+	    Tcl_HashEntry *hePtr =
+		    Tcl_FindHashEntry(iPtr->lineBCPtr, (char *) codePtr);
+
+	    if (hePtr) {
+		ExtCmdLoc *eclPtr = Tcl_GetHashValue(hePtr);
+		int redo = 0;
+		CmdFrame *ctxPtr = TclStackAlloc(interp,sizeof(CmdFrame));
+
+		*ctxPtr = *invoker;
+
+		if (invoker->type == TCL_LOCATION_BC) {
+		    /*
+		     * Note: Type BC => ctx.data.eval.path    is not used.
+		     *		    ctx.data.tebc.codePtr used instead
+		     */
+		    
+		    TclGetSrcInfoForPc(ctxPtr);
+		    if (ctxPtr->type == TCL_LOCATION_SOURCE) {
+			/*
+			 * The reference made by 'TclGetSrcInfoForPc' is
+			 * dead.
+			 */
+			
+			Tcl_DecrRefCount(ctxPtr->data.eval.path);
+			ctxPtr->data.eval.path = NULL;
+		    }
+		}
+		
+		if (word < ctxPtr->nline) {
+		    /*
+		     * Note: We do not care if the line[word] is -1. This
+		     * is a difference and requires a recompile (location
+		     * changed from absolute to relative, literal is used
+		     * fixed and through variable)
+		     *
+		     * Example:
+		     * test info-32.0 using literal of info-24.8
+		     *     (dict with ... vs           set body ...).
+		     */
+		    
+		    redo = ((eclPtr->type == TCL_LOCATION_SOURCE)
+			    && (eclPtr->start != ctxPtr->line[word]))
+			|| ((eclPtr->type == TCL_LOCATION_BC)
+				&& (ctxPtr->type == TCL_LOCATION_SOURCE));
+		}
+		
+		TclStackFree(interp, ctxPtr);
+	    
+		if (redo) {
+		    goto recompileObj;
+		}
+	    }
+	}
 
-    numSrcBytes = codePtr->numSrcBytes;
-    if ((numSrcBytes > 0) || (codePtr->flags & TCL_BYTECODE_PRECOMPILED)) {
 	/*
 	 * Increment the code's ref count while it is being executed. If
 	 * afterwards no references to it remain, free the code.
 	 */
-	
+
+    runCompiledObj:
 	codePtr->refCount++;
 	result = TclExecuteByteCode(interp, codePtr);
 	codePtr->refCount--;
 	if (codePtr->refCount <= 0) {
 	    TclCleanupByteCode(codePtr);
 	}
-    } else {
-	result = TCL_OK;
+	goto done;
     }
-    iPtr->numLevels--;
 
+    recompileObj:
+    iPtr->errorLine = 1;
 
     /*
-     * If no commands at all were executed, check for asynchronous
-     * handlers so that they at least get one change to execute.
-     * This is needed to handle event loops written in Tcl with
-     * empty bodies.
+     * TIP #280. Remember the invoker for a moment in the interpreter
+     * structures so that the byte code compiler can pick it up when
+     * initializing the compilation environment, i.e. the extended location
+     * information.
      */
 
-    if ((oldCount == iPtr->cmdCount) && Tcl_AsyncReady()) {
-	result = Tcl_AsyncInvoke(interp, result);
-    
+    iPtr->invokeCmdFramePtr = invoker;
+    iPtr->invokeWord = word;
+    tclByteCodeType.setFromAnyProc(interp, objPtr);
+    iPtr->invokeCmdFramePtr = NULL;
+    codePtr = (ByteCode *) objPtr->internalRep.twoPtrValue.ptr1;
+    goto runCompiledObj;
+
+    done:
+    iPtr->numLevels--;
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclIncrObj --
+ *
+ *	Increment an integeral value in a Tcl_Obj by an integeral value held
+ *	in another Tcl_Obj. Caller is responsible for making sure we can
+ *	update the first object.
+ *
+ * Results:
+ *	TCL_ERROR if either object is non-integer, and TCL_OK otherwise. On
+ *	error, an error message is left in the interpreter (if it is not NULL,
+ *	of course).
+ *
+ * Side effects:
+ *	valuePtr gets the new incrmented value.
+ *
+ *----------------------------------------------------------------------
+ */
 
+int
+TclIncrObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *valuePtr,
+    Tcl_Obj *incrPtr)
+{
+    ClientData ptr1, ptr2;
+    int type1, type2;
+    mp_int value, incr;
+
+    if (Tcl_IsShared(valuePtr)) {
+	Tcl_Panic("%s called with shared object", "TclIncrObj");
+    }
+
+    if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) {
 	/*
-	 * If an error occurred, record information about what was being
-	 * executed when the error occurred.
+	 * Produce error message (reparse?!)
 	 */
-	
-	if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) {
-	    script = Tcl_GetStringFromObj(objPtr, &numSrcBytes);
-	    Tcl_LogCommandInfo(interp, script, script, numSrcBytes);
+
+	return TclGetIntFromObj(interp, valuePtr, &type1);
+    }
+    if (GetNumberFromObj(NULL, incrPtr, &ptr2, &type2) != TCL_OK) {
+	/*
+	 * Produce error message (reparse?!)
+	 */
+
+	TclGetIntFromObj(interp, incrPtr, &type1);
+	Tcl_AddErrorInfo(interp, "\n    (reading increment)");
+	return TCL_ERROR;
+    }
+
+    if ((type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
+	long augend = *((const long *) ptr1);
+	long addend = *((const long *) ptr2);
+	long sum = augend + addend;
+
+	/*
+	 * Overflow when (augend and sum have different sign) and (augend and
+	 * addend have the same sign). This is encapsulated in the Overflowing
+	 * macro.
+	 */
+
+	if (!Overflowing(augend, addend, sum)) {
+	    TclSetLongObj(valuePtr, sum);
+	    return TCL_OK;
 	}
+#ifndef NO_WIDE_TYPE
+	{
+	    Tcl_WideInt w1 = (Tcl_WideInt) augend;
+	    Tcl_WideInt w2 = (Tcl_WideInt) addend;
+
+	    /*
+	     * We know the sum value is outside the long range, so we use the
+	     * macro form that doesn't range test again.
+	     */
+
+	    TclSetWideIntObj(valuePtr, w1 + w2);
+	    return TCL_OK;
+	}
+#endif
     }
 
-    /*
-     * Set the interpreter's termOffset member to the offset of the
-     * character just after the last one executed. We approximate the offset
-     * of the last character executed by using the number of characters
-     * compiled. 
-     */
+    if ((type1 == TCL_NUMBER_DOUBLE) || (type1 == TCL_NUMBER_NAN)) {
+	/*
+	 * Produce error message (reparse?!)
+	 */
 
-    iPtr->termOffset = numSrcBytes;
-    iPtr->flags &= ~ERR_ALREADY_LOGGED;
+	return TclGetIntFromObj(interp, valuePtr, &type1);
+    }
+    if ((type2 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_NAN)) {
+	/*
+	 * Produce error message (reparse?!)
+	 */
 
-    return result;
+	TclGetIntFromObj(interp, incrPtr, &type1);
+	Tcl_AddErrorInfo(interp, "\n    (reading increment)");
+	return TCL_ERROR;
+    }
+
+#ifndef NO_WIDE_TYPE
+    if ((type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) {
+	Tcl_WideInt w1, w2, sum;
+
+	TclGetWideIntFromObj(NULL, valuePtr, &w1);
+	TclGetWideIntFromObj(NULL, incrPtr, &w2);
+	sum = w1 + w2;
+
+	/*
+	 * Check for overflow.
+	 */
+
+	if (!Overflowing(w1, w2, sum)) {
+	    Tcl_SetWideIntObj(valuePtr, sum);
+	    return TCL_OK;
+	}
+    }
+#endif
+
+    Tcl_TakeBignumFromObj(interp, valuePtr, &value);
+    Tcl_GetBignumFromObj(interp, incrPtr, &incr);
+    mp_add(&value, &incr, &value);
+    mp_clear(&incr);
+    Tcl_SetBignumObj(valuePtr, &value);
+    return TCL_OK;
 }
 
 /*
@@ -1136,59 +1695,86 @@ TclCompEvalObj(interp, objPtr, invoker, word)
  *
  * TclExecuteByteCode --
  *
- *	This procedure executes the instructions of a ByteCode structure.
- *	It returns when a "done" instruction is executed or an error occurs.
+ *	This procedure executes the instructions of a ByteCode structure. It
+ *	returns when a "done" instruction is executed or an error occurs.
  *
  * Results:
- *	The return value is one of the return codes defined in tcl.h
- *	(such as TCL_OK), and interp->objResultPtr refers to a Tcl object
- *	that either contains the result of executing the code or an
- *	error message.
+ *	The return value is one of the return codes defined in tcl.h (such as
+ *	TCL_OK), and interp->objResultPtr refers to a Tcl object that either
+ *	contains the result of executing the code or an error message.
  *
  * Side effects:
  *	Almost certainly, depending on the ByteCode's instructions.
  *
  *----------------------------------------------------------------------
  */
- 
-static int
-TclExecuteByteCode(interp, codePtr)
-    Tcl_Interp *interp;		/* Token for command interpreter. */
-    ByteCode *codePtr;		/* The bytecode sequence to interpret. */
+
+int
+TclExecuteByteCode(
+    Tcl_Interp *interp,		/* Token for command interpreter. */
+    ByteCode *codePtr)		/* The bytecode sequence to interpret. */
 {
-    Interp *iPtr = (Interp *) interp;
-    ExecEnv *eePtr = iPtr->execEnvPtr;
-    				/* Points to the execution environment. */
-    register Tcl_Obj **stackPtr = eePtr->stackPtr;
-    				/* Cached evaluation stack base pointer. */
-    register int stackTop = eePtr->stackTop;
-    				/* Cached top index of evaluation stack. */
+    /*
+     * Compiler cast directive - not a real variable.
+     *	   Interp *iPtr = (Interp *) interp;
+     */
+#define iPtr ((Interp *) interp)
+
+    /*
+     * Check just the read-traced/write-traced bit of a variable.
+     */
+
+#define ReadTraced(varPtr) ((varPtr)->flags & VAR_TRACED_READ)
+#define WriteTraced(varPtr) ((varPtr)->flags & VAR_TRACED_WRITE)
+
+    /*
+     * Constants: variables that do not change during the execution, used
+     * sporadically.
+     */
+
+    ExecStack *esPtr;
+    Tcl_Obj **initTosPtr;	/* Stack top at start of execution. */
+    ptrdiff_t *initCatchTop;	/* Catch stack top at start of execution. */
+    Var *compiledLocals;
+    Namespace *namespacePtr;
+    CmdFrame *bcFramePtr;	/* TIP #280: Structure for tracking lines. */
+    Tcl_Obj **constants = &iPtr->execEnvPtr->constants[0];
+
+    /*
+     * Globals: variables that store state, must remain valid at all times.
+     */
+
+    ptrdiff_t *catchTop;
+    register Tcl_Obj **tosPtr;	/* Cached pointer to top of evaluation
+				 * stack. */
     register unsigned char *pc = codePtr->codeStart;
 				/* The current program counter. */
-    int opnd;			/* Current instruction's operand byte(s). */
-    int pcAdjustment;		/* Hold pc adjustment after instruction. */
-    int initStackTop = stackTop;/* Stack top at start of execution. */
-    ExceptionRange *rangePtr;	/* Points to closest loop or catch exception
-				 * range enclosing the pc. Used by various
-				 * instructions and processCatch to
-				 * process break, continue, and errors. */
-    int result = TCL_OK;	/* Return code returned after execution. */
-    int storeFlags;
-    Tcl_Obj *valuePtr, *value2Ptr, *objPtr;
-    char *bytes;
-    int length;
-    long i = 0;			/* Init. avoids compiler warning. */
-    Tcl_WideInt w;
+    int instructionCount = 0;	/* Counter that is used to work out when to
+				 * call Tcl_AsyncReady() */
+    Tcl_Obj *expandNestList = NULL;
+    int checkInterp = 0;	/* Indicates when a check of interp readyness
+				 * is necessary. Set by CACHE_STACK_INFO() */
+
+    /*
+     * Transfer variables - needed only between opcodes, but not while
+     * executing an instruction.
+     */
+
     register int cleanup;
     Tcl_Obj *objResultPtr;
-    char *part1, *part2;
-    Var *varPtr, *arrayPtr;
-    CallFrame *varFramePtr = iPtr->varFramePtr;
 
-#ifdef TCL_TIP280
-    /* TIP #280 : Structures for tracking lines */
-    CmdFrame bcFrame;
-#endif
+    /*
+     * Result variable - needed only when going to checkForcatch or other
+     * error handlers; also used as local in some opcodes.
+     */
+
+    int result = TCL_OK;	/* Return code returned after execution. */
+
+    /*
+     * Locals - variables that are used within opcodes or bounded sections of
+     * the file (jumps between opcodes within a family).
+     * NOTE: These are now defined locally where needed.
+     */
 
 #ifdef TCL_COMPILE_DEBUG
     int traceInstructions = (tclTraceExec == 3);
@@ -1197,307 +1783,604 @@ TclExecuteByteCode(interp, codePtr)
     char *curInstName = NULL;
 
     /*
-     * This procedure uses a stack to hold information about catch commands.
-     * This information is the current operand stack top when starting to
-     * execute the code for each catch command. It starts out with stack-
-     * allocated space but uses dynamically-allocated storage if needed.
+     * The execution uses a unified stack: first the catch stack, immediately
+     * above it a CmdFrame, then the execution stack.
+     *
+     * Make sure the catch stack is large enough to hold the maximum number of
+     * catch commands that could ever be executing at the same time (this will
+     * be no more than the exception range array's depth). Make sure the
+     * execution stack is large enough to execute this ByteCode.
      */
 
-#define STATIC_CATCH_STACK_SIZE 4
-    int (catchStackStorage[STATIC_CATCH_STACK_SIZE]);
-    int *catchStackPtr = catchStackStorage;
-    int catchTop = -1;
-
-#ifdef TCL_TIP280
-    /* TIP #280 : Initialize the frame. Do not push it yet. */
-
-    bcFrame.type      = ((codePtr->flags & TCL_BYTECODE_PRECOMPILED)
-			 ? TCL_LOCATION_PREBC
-			 : TCL_LOCATION_BC);
-    bcFrame.level     = (iPtr->cmdFramePtr == NULL ?
-			 1 :
-			 iPtr->cmdFramePtr->level + 1);
-    bcFrame.framePtr  = iPtr->framePtr;
-    bcFrame.nextPtr   = iPtr->cmdFramePtr;
-    bcFrame.nline     = 0;
-    bcFrame.line      = NULL;
-
-    bcFrame.data.tebc.codePtr  = codePtr;
-    bcFrame.data.tebc.pc       = NULL;
-    bcFrame.cmd.str.cmd        = NULL;
-    bcFrame.cmd.str.len        = 0;
-#endif
+    catchTop = initCatchTop = (ptrdiff_t *) (
+	GrowEvaluationStack(iPtr->execEnvPtr,
+		(sizeof(CmdFrame) + sizeof(Tcl_Obj *) - 1)/sizeof(Tcl_Obj *) +
+		codePtr->maxExceptDepth + codePtr->maxStackDepth, 0) - 1);
+    bcFramePtr = (CmdFrame *) (initCatchTop + codePtr->maxExceptDepth + 1);
+    tosPtr = initTosPtr = ((Tcl_Obj **) (bcFramePtr + 1)) - 1;
+    esPtr = iPtr->execEnvPtr->execStackPtr;
+
+    /*
+     * TIP #280: Initialize the frame. Do not push it yet.
+     */
+
+    bcFramePtr->type = ((codePtr->flags & TCL_BYTECODE_PRECOMPILED)
+	    ? TCL_LOCATION_PREBC : TCL_LOCATION_BC);
+    bcFramePtr->level = (iPtr->cmdFramePtr ? iPtr->cmdFramePtr->level+1 : 1);
+    bcFramePtr->framePtr = iPtr->framePtr;
+    bcFramePtr->nextPtr = iPtr->cmdFramePtr;
+    bcFramePtr->nline = 0;
+    bcFramePtr->line = NULL;
+
+    bcFramePtr->data.tebc.codePtr = codePtr;
+    bcFramePtr->data.tebc.pc = NULL;
+    bcFramePtr->cmd.str.cmd = NULL;
+    bcFramePtr->cmd.str.len = 0;
 
 #ifdef TCL_COMPILE_DEBUG
     if (tclTraceExec >= 2) {
 	PrintByteCodeInfo(codePtr);
-	fprintf(stdout, "  Starting stack top=%d\n", eePtr->stackTop);
+	fprintf(stdout, "  Starting stack top=%d\n", (int) CURR_DEPTH);
 	fflush(stdout);
     }
-    opnd = 0;			/* Init. avoids compiler warning. */       
 #endif
-    
+
 #ifdef TCL_COMPILE_STATS
     iPtr->stats.numExecutions++;
 #endif
 
-    /*
-     * Make sure the catch stack is large enough to hold the maximum number
-     * of catch commands that could ever be executing at the same time. This
-     * will be no more than the exception range array's depth.
-     */
-
-    if (codePtr->maxExceptDepth > STATIC_CATCH_STACK_SIZE) {
-	catchStackPtr = (int *)
-	        ckalloc(codePtr->maxExceptDepth * sizeof(int));
-    }
-
-    /*
-     * Make sure the stack has enough room to execute this ByteCode.
-     */
-
-    while ((stackTop + codePtr->maxStackDepth) > eePtr->stackEnd) {
-        GrowEvaluationStack(eePtr); 
-        stackPtr = eePtr->stackPtr;
-    }
+    namespacePtr = iPtr->varFramePtr->nsPtr;
+    compiledLocals = iPtr->varFramePtr->compiledLocals;
 
     /*
-     * Loop executing instructions until a "done" instruction, a 
-     * TCL_RETURN, or some error.
+     * Loop executing instructions until a "done" instruction, a TCL_RETURN,
+     * or some error.
      */
 
     goto cleanup0;
 
-    
     /*
-     * Targets for standard instruction endings; unrolled
-     * for speed in the most frequent cases (instructions that 
-     * consume up to two stack elements).
+     * Targets for standard instruction endings; unrolled for speed in the
+     * most frequent cases (instructions that consume up to two stack
+     * elements).
      *
-     * This used to be a "for(;;)" loop, with each instruction doing
-     * its own cleanup.
+     * This used to be a "for(;;)" loop, with each instruction doing its own
+     * cleanup.
      */
-    
+
+    {
+	Tcl_Obj *valuePtr;
+
     cleanupV_pushObjResultPtr:
-    switch (cleanup) {
-        case 0:
-	    stackPtr[++stackTop] = (objResultPtr);
+	switch (cleanup) {
+	case 0:
+	    *(++tosPtr) = (objResultPtr);
 	    goto cleanup0;
-        default:
+	default:
 	    cleanup -= 2;
 	    while (cleanup--) {
 		valuePtr = POP_OBJECT();
 		TclDecrRefCount(valuePtr);
 	    }
-        case 2: 
-        cleanup2_pushObjResultPtr:
+	case 2:
+	cleanup2_pushObjResultPtr:
 	    valuePtr = POP_OBJECT();
 	    TclDecrRefCount(valuePtr);
-        case 1: 
-        cleanup1_pushObjResultPtr:
-	    valuePtr = stackPtr[stackTop];
+	case 1:
+	cleanup1_pushObjResultPtr:
+	    valuePtr = OBJ_AT_TOS;
 	    TclDecrRefCount(valuePtr);
-    }
-    stackPtr[stackTop] = objResultPtr;
-    goto cleanup0;
-    
+	}
+	OBJ_AT_TOS = objResultPtr;
+	goto cleanup0;
+
     cleanupV:
-    switch (cleanup) {
-        default:
+	switch (cleanup) {
+	default:
 	    cleanup -= 2;
 	    while (cleanup--) {
 		valuePtr = POP_OBJECT();
 		TclDecrRefCount(valuePtr);
 	    }
-        case 2: 
-        cleanup2:
+	case 2:
+	cleanup2:
 	    valuePtr = POP_OBJECT();
 	    TclDecrRefCount(valuePtr);
-        case 1: 
-        cleanup1:
+	case 1:
+	cleanup1:
 	    valuePtr = POP_OBJECT();
 	    TclDecrRefCount(valuePtr);
-        case 0:
+	case 0:
 	    /*
-	     * We really want to do nothing now, but this is needed
-	     * for some compilers (SunPro CC)
+	     * We really want to do nothing now, but this is needed for some
+	     * compilers (SunPro CC).
 	     */
+
 	    break;
+	}
     }
+ cleanup0:
 
-    cleanup0:
-    
 #ifdef TCL_COMPILE_DEBUG
-    ValidatePcAndStackTop(codePtr, pc, stackTop, initStackTop);
+    /*
+     * Skip the stack depth check if an expansion is in progress.
+     */
+
+    ValidatePcAndStackTop(codePtr, pc, CURR_DEPTH, 0,
+	    /*checkStack*/ expandNestList == NULL);
     if (traceInstructions) {
-	fprintf(stdout, "%2d: %2d ", iPtr->numLevels, stackTop);
+	fprintf(stdout, "%2d: %2d ", iPtr->numLevels, (int) CURR_DEPTH);
 	TclPrintInstruction(codePtr, pc);
 	fflush(stdout);
     }
 #endif /* TCL_COMPILE_DEBUG */
-    
-#ifdef TCL_COMPILE_STATS    
+
+#ifdef TCL_COMPILE_STATS
     iPtr->stats.instructionCount[*pc]++;
 #endif
 
+    /*
+     * Check for asynchronous handlers [Bug 746722]; we do the check every
+     * ASYNC_CHECK_COUNT_MASK instruction, of the form (2**n-1).
+     */
+
+    if ((instructionCount++ & ASYNC_CHECK_COUNT_MASK) == 0) {
+	/*
+	 * Check for asynchronous handlers [Bug 746722]; we do the check every
+	 * ASYNC_CHECK_COUNT_MASK instruction, of the form (2**n-<1).
+	 */
+
+	if (TclAsyncReady(iPtr)) {
+	    int localResult;
+
+	    DECACHE_STACK_INFO();
+	    localResult = Tcl_AsyncInvoke(interp, result);
+	    CACHE_STACK_INFO();
+	    if (localResult == TCL_ERROR) {
+		result = localResult;
+		goto checkForCatch;
+	    }
+	}
+	if (TclLimitReady(iPtr->limit)) {
+	    int localResult;
+
+	    DECACHE_STACK_INFO();
+	    localResult = Tcl_LimitCheck(interp);
+	    CACHE_STACK_INFO();
+	    if (localResult == TCL_ERROR) {
+		result = localResult;
+		goto checkForCatch;
+	    }
+	}
+    }
+
      TCL_DTRACE_INST_NEXT();
 
+    /*
+     * These two instructions account for 26% of all instructions (according
+     * to measurements on tclbench by Ben Vitale
+     * [http://www.cs.toronto.edu/syslab/pubs/tcl2005-vitale-zaleski.pdf]
+     * Resolving them before the switch reduces the cost of branch
+     * mispredictions, seems to improve runtime by 5% to 15%, and (amazingly!)
+     * reduces total obj size.
+     */
+
+    if (*pc == INST_LOAD_SCALAR1) {
+	goto instLoadScalar1;
+    } else if (*pc == INST_PUSH1) {
+	goto instPush1Peephole;
+    }
+
     switch (*pc) {
+    case INST_SYNTAX:
+    case INST_RETURN_IMM: {
+	int code = TclGetInt4AtPtr(pc+1);
+	int level = TclGetUInt4AtPtr(pc+5);
+
+	/*
+	 * OBJ_AT_TOS is returnOpts, OBJ_UNDER_TOS is resultObjPtr.
+	 */
+
+	TRACE(("%u %u => ", code, level));
+	result = TclProcessReturn(interp, code, level, OBJ_AT_TOS);
+	if (result == TCL_OK) {
+	    TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")",
+		    O2S(objResultPtr)));
+	    NEXT_INST_F(9, 1, 0);
+	} else {
+	    Tcl_SetObjResult(interp, OBJ_UNDER_TOS);
+	    if (*pc == INST_SYNTAX) {
+		iPtr->flags &= ~ERR_ALREADY_LOGGED;
+	    }
+	    cleanup = 2;
+	    goto processExceptionReturn;
+	}
+    }
+
+    case INST_RETURN_STK:
+	TRACE(("=> "));
+	objResultPtr = POP_OBJECT();
+	result = Tcl_SetReturnOptions(interp, OBJ_AT_TOS);
+	Tcl_DecrRefCount(OBJ_AT_TOS);
+	OBJ_AT_TOS = objResultPtr;
+	if (result == TCL_OK) {
+	    TRACE_APPEND(("continuing to next instruction (result=\"%.30s\")",
+		    O2S(objResultPtr)));
+	    NEXT_INST_F(1, 0, 0);
+	} else {
+	    Tcl_SetObjResult(interp, objResultPtr);
+	    cleanup = 1;
+	    goto processExceptionReturn;
+	}
+
     case INST_DONE:
-	if (stackTop <= initStackTop) {
-	    stackTop--;
+	if (tosPtr > initTosPtr) {
+	    /*
+	     * Set the interpreter's object result to point to the topmost
+	     * object from the stack, and check for a possible [catch]. The
+	     * stackTop's level and refCount will be handled by "processCatch"
+	     * or "abnormalReturn".
+	     */
+
+	    Tcl_SetObjResult(interp, OBJ_AT_TOS);
+#ifdef TCL_COMPILE_DEBUG
+	    TRACE_WITH_OBJ(("=> return code=%d, result=", result),
+		    iPtr->objResultPtr);
+	    if (traceInstructions) {
+		fprintf(stdout, "\n");
+	    }
+#endif
+	    goto checkForCatch;
+	} else {
+	    (void) POP_OBJECT();
 	    goto abnormalReturn;
 	}
-	
+
+    case INST_PUSH1:
+    instPush1Peephole:
+	PUSH_OBJECT(codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)]);
+	TRACE_WITH_OBJ(("%u => ", TclGetInt1AtPtr(pc+1)), OBJ_AT_TOS);
+	pc += 2;
+#if !TCL_COMPILE_DEBUG
 	/*
-	 * Set the interpreter's object result to point to the 
-	 * topmost object from the stack, and check for a possible
-	 * [catch]. The stackTop's level and refCount will be handled 
-	 * by "processCatch" or "abnormalReturn".
+	 * Runtime peephole optimisation: check if we are pushing again.
 	 */
 
-	valuePtr = stackPtr[stackTop];
-	Tcl_SetObjResult(interp, valuePtr);
-#ifdef TCL_COMPILE_DEBUG	    
-	TRACE_WITH_OBJ(("=> return code=%d, result=", result),
-	        iPtr->objResultPtr);
-	if (traceInstructions) {
-	    fprintf(stdout, "\n");
+	if (*pc == INST_PUSH1) {
+	    TCL_DTRACE_INST_NEXT();
+	    goto instPush1Peephole;
 	}
 #endif
-	goto checkForCatch;
-	
-    case INST_PUSH1:
-	objResultPtr = codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)];
-	TRACE_WITH_OBJ(("%u => ", TclGetInt1AtPtr(pc+1)), objResultPtr);
-	NEXT_INST_F(2, 0, 1);
+	NEXT_INST_F(0, 0, 0);
 
     case INST_PUSH4:
 	objResultPtr = codePtr->objArrayPtr[TclGetUInt4AtPtr(pc+1)];
 	TRACE_WITH_OBJ(("%u => ", TclGetUInt4AtPtr(pc+1)), objResultPtr);
 	NEXT_INST_F(5, 0, 1);
 
-    case INST_POP:
-	TRACE_WITH_OBJ(("=> discarding "), stackPtr[stackTop]);
+    case INST_POP: {
+	Tcl_Obj *valuePtr;
+
+	TRACE_WITH_OBJ(("=> discarding "), OBJ_AT_TOS);
 	valuePtr = POP_OBJECT();
 	TclDecrRefCount(valuePtr);
-	NEXT_INST_F(1, 0, 0);
-	
+
+	/*
+	 * Runtime peephole optimisation: an INST_POP is scheduled at the end
+	 * of most commands. If the next instruction is an INST_START_CMD,
+	 * fall through to it.
+	 */
+
+	pc++;
+#if !TCL_COMPILE_DEBUG
+	if (*pc == INST_START_CMD) {
+	    TCL_DTRACE_INST_NEXT();
+	    goto instStartCmdPeephole;
+	}
+#endif
+	NEXT_INST_F(0, 0, 0);
+    }
+
+    case INST_START_CMD:
+#if !TCL_COMPILE_DEBUG
+    instStartCmdPeephole:
+#endif
+	/*
+	 * Remark that if the interpreter is marked for deletion its
+	 * compileEpoch is modified, so that the epoch check also verifies
+	 * that the interp is not deleted. If no outside call has been made
+	 * since the last check, it is safe to omit the check.
+	 */
+
+	iPtr->cmdCount += TclGetUInt4AtPtr(pc+5);
+	if (!checkInterp) {
+	instStartCmdOK:
+	    NEXT_INST_F(9, 0, 0);
+	} else if (((codePtr->compileEpoch == iPtr->compileEpoch)
+		&& (codePtr->nsEpoch == namespacePtr->resolverEpoch))
+		|| (codePtr->flags & TCL_BYTECODE_PRECOMPILED)) {
+	    checkInterp = 0;
+	    goto instStartCmdOK;
+	} else {
+	    const char *bytes;
+	    int length, opnd;
+	    Tcl_Obj *newObjResultPtr;
+
+	    bytes = GetSrcInfoForPc(pc, codePtr, &length);
+	    DECACHE_STACK_INFO();
+	    result = Tcl_EvalEx(interp, bytes, length, 0);
+	    CACHE_STACK_INFO();
+	    if (result != TCL_OK) {
+		cleanup = 0;
+		if (result == TCL_ERROR) {
+		    /*
+		     * Tcl_EvalEx already did the task of logging
+		     * the error to the stack trace for us, so set
+		     * a flag to prevent the TEBC exception handling
+		     * machinery from trying to do it again.
+		     * Tcl Bug 2037338.  See test execute-8.4.
+		     */
+		    iPtr->flags |= ERR_ALREADY_LOGGED;
+		}
+		goto processExceptionReturn;
+	    }
+	    opnd = TclGetUInt4AtPtr(pc+1);
+	    objResultPtr = Tcl_GetObjResult(interp);
+	    TclNewObj(newObjResultPtr);
+	    Tcl_IncrRefCount(newObjResultPtr);
+	    iPtr->objResultPtr = newObjResultPtr;
+	    NEXT_INST_V(opnd, 0, -1);
+	}
+
     case INST_DUP:
-	objResultPtr = stackPtr[stackTop];
+	objResultPtr = OBJ_AT_TOS;
 	TRACE_WITH_OBJ(("=> "), objResultPtr);
 	NEXT_INST_F(1, 0, 1);
 
-    case INST_OVER:
-	opnd = TclGetUInt4AtPtr( pc+1 );
-	objResultPtr = stackPtr[ stackTop - opnd ];
+    case INST_OVER: {
+	int opnd;
+
+	opnd = TclGetUInt4AtPtr(pc+1);
+	objResultPtr = OBJ_AT_DEPTH(opnd);
 	TRACE_WITH_OBJ(("=> "), objResultPtr);
 	NEXT_INST_F(5, 0, 1);
+    }
+
+    case INST_REVERSE: {
+	int opnd;
+	Tcl_Obj **a, **b;
+
+	opnd = TclGetUInt4AtPtr(pc+1);
+	a = tosPtr-(opnd-1);
+	b = tosPtr;
+	while (a<b) {
+	    Tcl_Obj *temp = *a;
+	    *a = *b;
+	    *b = temp;
+	    a++; b--;
+	}
+	NEXT_INST_F(5, 0, 0);
+    }
+
+    case INST_CONCAT1: {
+	int opnd, length, appendLen = 0;
+	char *bytes, *p;
+	Tcl_Obj **currPtr;
 
-    case INST_CONCAT1:
 	opnd = TclGetUInt1AtPtr(pc+1);
-	{
-	    int totalLen = 0;
-	    
-	    /*
-	     * Peephole optimisation for appending an empty string.
-	     * This enables replacing 'K $x [set x{}]' by '$x[set x{}]'
-	     * for fastest execution. Avoid doing the optimisation for wide
-	     * ints - a case where equal strings may refer to different values
-	     * (see [Bug 1251791]).
-	     */
 
-	    if ((opnd == 2) && (stackPtr[stackTop-1]->typePtr != &tclWideIntType)) {
-		Tcl_GetStringFromObj(stackPtr[stackTop], &length);
-		if (length == 0) {
-		    /* Just drop the top item from the stack */
-		    NEXT_INST_F(2, 1, 0);
-		}
+	/*
+	 * Compute the length to be appended.
+	 */
+
+	for (currPtr=&OBJ_AT_DEPTH(opnd-2);
+		appendLen >= 0 && currPtr<=&OBJ_AT_TOS; currPtr++) {
+	    bytes = TclGetStringFromObj(*currPtr, &length);
+	    if (bytes != NULL) {
+		appendLen += length;
+	    }
+	}
+
+	if (appendLen < 0) {
+	    /* TODO: convert panic to error ? */
+	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+	}
+
+	/*
+	 * If nothing is to be appended, just return the first object by
+	 * dropping all the others from the stack; this saves both the
+	 * computation and copy of the string rep of the first object,
+	 * enabling the fast '$x[set x {}]' idiom for 'K $x [set x {}]'.
+	 */
+
+	if (appendLen == 0) {
+	    TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
+	    NEXT_INST_V(2, (opnd-1), 0);
+	}
+
+	/*
+	 * If the first object is shared, we need a new obj for the result;
+	 * otherwise, we can reuse the first object. In any case, make sure it
+	 * has enough room to accomodate all the concatenated bytes. Note that
+	 * if it is unshared its bytes are copied by ckrealloc, so that we set
+	 * the loop parameters to avoid copying them again: p points to the
+	 * end of the already copied bytes, currPtr to the second object.
+	 */
+
+	objResultPtr = OBJ_AT_DEPTH(opnd-1);
+	bytes = TclGetStringFromObj(objResultPtr, &length);
+	if (length + appendLen < 0) {
+	    /* TODO: convert panic to error ? */
+	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+	}
+#if !TCL_COMPILE_DEBUG
+	if (bytes != tclEmptyStringRep && !Tcl_IsShared(objResultPtr)) {
+	    TclFreeIntRep(objResultPtr);
+	    objResultPtr->typePtr = NULL;
+	    objResultPtr->bytes = ckrealloc(bytes, (length + appendLen + 1));
+	    objResultPtr->length = length + appendLen;
+	    p = TclGetString(objResultPtr) + length;
+	    currPtr = &OBJ_AT_DEPTH(opnd - 2);
+	} else {
+#endif
+	    p = (char *) ckalloc((unsigned) (length + appendLen + 1));
+	    TclNewObj(objResultPtr);
+	    objResultPtr->bytes = p;
+	    objResultPtr->length = length + appendLen;
+	    currPtr = &OBJ_AT_DEPTH(opnd - 1);
+#if !TCL_COMPILE_DEBUG
+	}
+#endif
+
+	/*
+	 * Append the remaining characters.
+	 */
+
+	for (; currPtr <= &OBJ_AT_TOS; currPtr++) {
+	    bytes = TclGetStringFromObj(*currPtr, &length);
+	    if (bytes != NULL) {
+		memcpy(p, bytes, (size_t) length);
+		p += length;
 	    }
+	}
+	*p = '\0';
 
+	TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
+	NEXT_INST_V(2, opnd, 1);
+    }
+
+    case INST_EXPAND_START: {
+	/*
+	 * Push an element to the expandNestList. This records the current
+	 * stack depth - i.e., the point in the stack where the expanded
+	 * command starts.
+	 *
+	 * Use a Tcl_Obj as linked list element; slight mem waste, but faster
+	 * allocation than ckalloc. This also abuses the Tcl_Obj structure, as
+	 * we do not define a special tclObjType for it. It is not dangerous
+	 * as the obj is never passed anywhere, so that all manipulations are
+	 * performed here and in INST_INVOKE_EXPANDED (in case of an expansion
+	 * error, also in INST_EXPAND_STKTOP).
+	 */
+
+	Tcl_Obj *objPtr;
+
+	TclNewObj(objPtr);
+	objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) CURR_DEPTH;
+	objPtr->internalRep.twoPtrValue.ptr2 = (VOID *) expandNestList;
+	expandNestList = objPtr;
+	NEXT_INST_F(1, 0, 0);
+    }
+
+    case INST_EXPAND_STKTOP: {
+	int objc, length, i;
+	Tcl_Obj **objv, *valuePtr;
+	ptrdiff_t moved;
+
+	/*
+	 * Make sure that the element at stackTop is a list; if not, just
+	 * leave with an error. Note that the element from the expand list
+	 * will be removed at checkForCatch.
+	 */
+
+	valuePtr = OBJ_AT_TOS;
+	if (TclListObjGetElements(interp, valuePtr, &objc, &objv) != TCL_OK){
+	    TRACE_WITH_OBJ(("%.30s => ERROR: ", O2S(valuePtr)),
+		    Tcl_GetObjResult(interp));
+	    result = TCL_ERROR;
+	    goto checkForCatch;
+	}
+	(void) POP_OBJECT();
+
+	/*
+	 * Make sure there is enough room in the stack to expand this list
+	 * *and* process the rest of the command (at least up to the next
+	 * argument expansion or command end). The operand is the current
+	 * stack depth, as seen by the compiler.
+	 */
+
+	length = objc + (codePtr->maxStackDepth - TclGetInt4AtPtr(pc+1));
+	DECACHE_STACK_INFO();
+	moved = (GrowEvaluationStack(iPtr->execEnvPtr, length, 1) - 1)
+		- (Tcl_Obj **) initCatchTop;
+
+	if (moved) {
 	    /*
-	     * Concatenate strings (with no separators) from the top
-	     * opnd items on the stack starting with the deepest item.
-	     * First, determine how many characters are needed.
+	     * Change the global data to point to the new stack.
 	     */
 
-	    for (i = (stackTop - (opnd-1));
-		    totalLen >= 0 && i <= stackTop; i++) {
-		bytes = Tcl_GetStringFromObj(stackPtr[i], &length);
-		if (bytes != NULL) {
-		    totalLen += length;
-		}
-	    }
+	    initCatchTop += moved;
+	    catchTop += moved;
+	    initTosPtr += moved;
+	    tosPtr += moved;
+	    esPtr = iPtr->execEnvPtr->execStackPtr;
+	}
 
-	    if (totalLen < 0) {
-		Tcl_Panic("max size for a Tcl value (%d bytes) exceeded",
-			INT_MAX);
-	    }
+	/*
+	 * Expand the list at stacktop onto the stack; free the list. Knowing
+	 * that it has a freeIntRepProc we use Tcl_DecrRefCount().
+	 */
+
+	for (i = 0; i < objc; i++) {
+	    PUSH_OBJECT(objv[i]);
+	}
+
+	Tcl_DecrRefCount(valuePtr);
+	NEXT_INST_F(5, 0, 0);
+    }
+
+    {
+	/*
+	 * INVOCATION BLOCK
+	 */
 
+	int objc, pcAdjustment;
+
+    case INST_INVOKE_EXPANDED:
+	{
+	    Tcl_Obj *objPtr = expandNestList;
+
+	    expandNestList = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr2;
+	    objc = CURR_DEPTH
+		    - (ptrdiff_t) objPtr->internalRep.twoPtrValue.ptr1;
+	    TclDecrRefCount(objPtr);
+	}
+
+	if (objc) {
+	    pcAdjustment = 1;
+	    goto doInvocation;
+	} else {
 	    /*
-	     * Initialize the new append string object by appending the
-	     * strings of the opnd stack objects. Also pop the objects. 
+	     * Nothing was expanded, return {}.
 	     */
 
 	    TclNewObj(objResultPtr);
-	    if (totalLen > 0) {
-		char *p = (char *) ckalloc((unsigned) (totalLen + 1));
-		objResultPtr->bytes = p;
-		objResultPtr->length = totalLen;
-		for (i = (stackTop - (opnd-1));  i <= stackTop;  i++) {
-		    valuePtr = stackPtr[i];
-		    bytes = Tcl_GetStringFromObj(valuePtr, &length);
-		    if (bytes != NULL) {
-			memcpy((VOID *) p, (VOID *) bytes,
-			       (size_t) length);
-			p += length;
-		    }
-		}
-		*p = '\0';
-	    }
-		
-	    TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
-	    NEXT_INST_V(2, opnd, 1);
+	    NEXT_INST_F(1, 0, 1);
 	}
-	    
+
     case INST_INVOKE_STK4:
-	opnd = TclGetUInt4AtPtr(pc+1);
+	objc = TclGetUInt4AtPtr(pc+1);
 	pcAdjustment = 5;
 	goto doInvocation;
 
     case INST_INVOKE_STK1:
-	opnd = TclGetUInt1AtPtr(pc+1);
+	objc = TclGetUInt1AtPtr(pc+1);
 	pcAdjustment = 2;
-	    
+
     doInvocation:
 	{
-	    int objc = opnd; /* The number of arguments. */
-	    Tcl_Obj **objv;	 /* The array of argument objects. */
-
-	    /*
-	     * We keep the stack reference count as a (char *), as that
-	     * works nicely as a portable pointer-sized counter.
-	     */
-
-	    char **preservedStackRefCountPtr;
-	    
-	    /* 
-	     * Reference to memory block containing
-	     * objv array (must be kept live throughout
-	     * trace and command invokations.) 
-	     */
-
-	    objv = &(stackPtr[stackTop - (objc-1)]);
+	    Tcl_Obj **objv = &OBJ_AT_DEPTH(objc-1);
 
 #ifdef TCL_COMPILE_DEBUG
 	    if (tclTraceExec >= 2) {
+		int i;
+
 		if (traceInstructions) {
 		    strncpy(cmdNameBuf, TclGetString(objv[0]), 20);
 		    TRACE(("%u => call ", objc));
 		} else {
-		    fprintf(stdout, "%d: (%u) invoking ",
-			    iPtr->numLevels,
-			    (unsigned int)(pc - codePtr->codeStart));
+		    fprintf(stdout, "%d: (%u) invoking ", iPtr->numLevels,
+			    (unsigned)(pc - codePtr->codeStart));
 		}
 		for (i = 0;  i < objc;  i++) {
 		    TclPrintObject(stdout, objv[i], 15);
@@ -1508,142 +2391,189 @@ TclExecuteByteCode(interp, codePtr)
 	    }
 #endif /*TCL_COMPILE_DEBUG*/
 
-	    /* 
-	     * If trace procedures will be called, we need a
-	     * command string to pass to TclEvalObjvInternal; note 
-	     * that a copy of the string will be made there to 
-	     * include the ending \0.
-	     */
-
-	    bytes = NULL;
-	    length = 0;
-	    if (iPtr->tracePtr != NULL) {
-		Trace *tracePtr, *nextTracePtr;
-		    
-		for (tracePtr = iPtr->tracePtr;  tracePtr != NULL;
-		     tracePtr = nextTracePtr) {
-		    nextTracePtr = tracePtr->nextPtr;
-		    if (tracePtr->level == 0 ||
-			iPtr->numLevels <= tracePtr->level) {
-			/*
-			 * Traces will be called: get command string
-			 */
-
-			bytes = GetSrcInfoForPc(pc, codePtr, &length);
-			break;
-		    }
-		}
-	    } else {		
-		Command *cmdPtr;
-		cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, objv[0]);
-		if ((cmdPtr != NULL) && (cmdPtr->flags & CMD_HAS_EXEC_TRACES)) {
-		    bytes = GetSrcInfoForPc(pc, codePtr, &length);
-		}
-	    }		
-
 	    /*
-	     * A reference to part of the stack vector itself
-	     * escapes our control: increase its refCount
-	     * to stop it from being deallocated by a recursive
-	     * call to ourselves.  The extra variable is needed
-	     * because all others are liable to change due to the
-	     * trace procedures.
+	     * Reset the instructionCount variable, since we're about to check
+	     * for async stuff anyway while processing TclEvalObjvInternal.
 	     */
 
-	    preservedStackRefCountPtr = (char **) (stackPtr-1);
-	    ++*preservedStackRefCountPtr;
+	    instructionCount = 1;
 
 	    /*
 	     * Finally, let TclEvalObjvInternal handle the command.
 	     *
-	     * TIP #280 : Record the last piece of info needed by
+	     * TIP #280: Record the last piece of info needed by
 	     * 'TclGetSrcInfoForPc', and push the frame.
 	     */
 
-#ifdef TCL_TIP280
-	    bcFrame.data.tebc.pc = (char*) pc;
-	    iPtr->cmdFramePtr = &bcFrame;
-	    TclArgumentBCEnter((Tcl_Interp*) iPtr, objv, objc,
-			       codePtr, &bcFrame,
-			       pc - codePtr->codeStart);
-#endif
+	    bcFramePtr->data.tebc.pc = (char *) pc;
+	    iPtr->cmdFramePtr = bcFramePtr;
+	    if (iPtr->flags & INTERP_DEBUG_FRAME) {
+		TclArgumentBCEnter((Tcl_Interp *) iPtr, objv, objc,
+			codePtr, bcFramePtr, pc - codePtr->codeStart);
+	    }
 	    DECACHE_STACK_INFO();
-	    Tcl_ResetResult(interp);
-	    result = TclEvalObjvInternal(interp, objc, objv, bytes, length, 0);
+	    result = TclEvalObjvInternal(interp, objc, objv,
+		    /* call from TEBC */(char *) -1, -1, 0);
 	    CACHE_STACK_INFO();
-#ifdef TCL_TIP280
-	    TclArgumentBCRelease((Tcl_Interp*) iPtr,  objv, objc,
-				 codePtr,
-				 pc - codePtr->codeStart);
+	    if (iPtr->flags & INTERP_DEBUG_FRAME) {
+		TclArgumentBCRelease((Tcl_Interp *) iPtr, objv, objc,
+			codePtr, pc - codePtr->codeStart);
+	    }
 	    iPtr->cmdFramePtr = iPtr->cmdFramePtr->nextPtr;
-#endif
-
-	    /*
-	     * If the old stack is going to be released, it is
-	     * safe to do so now, since no references to objv are
-	     * going to be used from now on.
-	     */
-
-	    --*preservedStackRefCountPtr;
-	    if (*preservedStackRefCountPtr == (char *) 0) {
-		ckfree((VOID *) preservedStackRefCountPtr);
-	    }	    
 
 	    if (result == TCL_OK) {
+		Tcl_Obj *objPtr;
+
+#ifndef TCL_COMPILE_DEBUG
+		if (*(pc+pcAdjustment) == INST_POP) {
+		    NEXT_INST_V((pcAdjustment+1), objc, 0);
+		}
+#endif
 		/*
-		 * Push the call's object result and continue execution
-		 * with the next instruction.
+		 * Push the call's object result and continue execution with
+		 * the next instruction.
 		 */
 
 		TRACE_WITH_OBJ(("%u => ... after \"%.20s\": TCL_OK, result=",
-		        objc, cmdNameBuf), Tcl_GetObjResult(interp));
+			objc, cmdNameBuf), Tcl_GetObjResult(interp));
 
 		objResultPtr = Tcl_GetObjResult(interp);
 
 		/*
-		 * Reset the interp's result to avoid possible duplications
-		 * of large objects [Bug 781585]. We do not call
-		 * Tcl_ResetResult() to avoid any side effects caused by
-		 * the resetting of errorInfo and errorCode [Bug 804681], 
-		 * which are not needed here. We chose instead to manipulate
-		 * the interp's object result directly.
+		 * Reset the interp's result to avoid possible duplications of
+		 * large objects [Bug 781585]. We do not call Tcl_ResetResult
+		 * to avoid any side effects caused by the resetting of
+		 * errorInfo and errorCode [Bug 804681], which are not needed
+		 * here. We chose instead to manipulate the interp's object
+		 * result directly.
 		 *
 		 * Note that the result object is now in objResultPtr, it
-		 * keeps the refCount it had in its role of iPtr->objResultPtr.
+		 * keeps the refCount it had in its role of
+		 * iPtr->objResultPtr.
 		 */
-		{
-		    Tcl_Obj *newObjResultPtr;
-		    TclNewObj(newObjResultPtr);
-		    Tcl_IncrRefCount(newObjResultPtr);
-		    iPtr->objResultPtr = newObjResultPtr;
-		}
 
-		NEXT_INST_V(pcAdjustment, opnd, -1);
+		TclNewObj(objPtr);
+		Tcl_IncrRefCount(objPtr);
+		iPtr->objResultPtr = objPtr;
+		NEXT_INST_V(pcAdjustment, objc, -1);
 	    } else {
-		cleanup = opnd;
+		cleanup = objc;
 		goto processExceptionReturn;
 	    }
 	}
 
-    case INST_EVAL_STK:
+#if TCL_SUPPORT_84_BYTECODE
+    case INST_CALL_BUILTIN_FUNC1: {
 	/*
-	 * Note to maintainers: it is important that INST_EVAL_STK
-	 * pop its argument from the stack before jumping to
-	 * checkForCatch! DO NOT OPTIMISE!
+	 * Call one of the built-in pre-8.5 Tcl math functions. This
+	 * translates to INST_INVOKE_STK1 with the first argument of
+	 * ::tcl::mathfunc::$objv[0]. We need to insert the named math
+	 * function into the stack.
 	 */
 
-	objPtr = stackPtr[stackTop];
-	DECACHE_STACK_INFO();
-#ifndef TCL_TIP280
-	result = TclCompEvalObj(interp, objPtr);
+	int opnd, numArgs;
+	Tcl_Obj *objPtr;
+
+	opnd = TclGetUInt1AtPtr(pc+1);
+	if ((opnd < 0) || (opnd > LAST_BUILTIN_FUNC)) {
+	    TRACE(("UNRECOGNIZED BUILTIN FUNC CODE %d\n", opnd));
+	    Tcl_Panic("TclExecuteByteCode: unrecognized builtin function code %d", opnd);
+	}
+
+	objPtr = Tcl_NewStringObj("::tcl::mathfunc::", 17);
+	Tcl_AppendToObj(objPtr, tclBuiltinFuncTable[opnd].name, -1);
+
+	/*
+	 * Only 0, 1 or 2 args.
+	 */
+
+	numArgs = tclBuiltinFuncTable[opnd].numArgs;
+	if (numArgs == 0) {
+	    PUSH_OBJECT(objPtr);
+	} else if (numArgs == 1) {
+	    Tcl_Obj *tmpPtr1 = POP_OBJECT();
+	    PUSH_OBJECT(objPtr);
+	    PUSH_OBJECT(tmpPtr1);
+	    Tcl_DecrRefCount(tmpPtr1);
+	} else {
+	    Tcl_Obj *tmpPtr1, *tmpPtr2;
+	    tmpPtr2 = POP_OBJECT();
+	    tmpPtr1 = POP_OBJECT();
+	    PUSH_OBJECT(objPtr);
+	    PUSH_OBJECT(tmpPtr1);
+	    PUSH_OBJECT(tmpPtr2);
+	    Tcl_DecrRefCount(tmpPtr1);
+	    Tcl_DecrRefCount(tmpPtr2);
+	}
+
+	objc = numArgs + 1;
+	pcAdjustment = 2;
+	goto doInvocation;
+    }
+
+    case INST_CALL_FUNC1: {
+	/*
+	 * Call a non-builtin Tcl math function previously registered by a
+	 * call to Tcl_CreateMathFunc pre-8.5. This is essentially
+	 * INST_INVOKE_STK1 converting the first arg to
+	 * ::tcl::mathfunc::$objv[0].
+	 */
+
+	Tcl_Obj *tmpPtr, *objPtr;
+
+	/*
+	 * Number of arguments. The function name is the 0-th argument.
+	 */
+
+	objc = TclGetUInt1AtPtr(pc+1);
+
+	objPtr = OBJ_AT_DEPTH(objc-1);
+	tmpPtr = Tcl_NewStringObj("::tcl::mathfunc::", 17);
+	Tcl_AppendObjToObj(tmpPtr, objPtr);
+	Tcl_DecrRefCount(objPtr);
+
+	/*
+	 * Variation of PUSH_OBJECT.
+	 */
+
+	OBJ_AT_DEPTH(objc-1) = tmpPtr;
+	Tcl_IncrRefCount(tmpPtr);
+
+	pcAdjustment = 2;
+	goto doInvocation;
+    }
 #else
-	/* TIP #280: The invoking context is left NULL for a dynamically
+    /*
+     * INST_CALL_BUILTIN_FUNC1 and INST_CALL_FUNC1 were made obsolete by the
+     * changes to add a ::tcl::mathfunc namespace in 8.5. Optional support
+     * remains for existing bytecode precompiled files.
+     */
+
+    case INST_CALL_BUILTIN_FUNC1:
+	Tcl_Panic("TclExecuteByteCode: obsolete INST_CALL_BUILTIN_FUNC1 found");
+    case INST_CALL_FUNC1:
+	Tcl_Panic("TclExecuteByteCode: obsolete INST_CALL_FUNC1 found");
+#endif
+    }
+
+    case INST_EVAL_STK: {
+	/*
+	 * Note to maintainers: it is important that INST_EVAL_STK pop its
+	 * argument from the stack before jumping to checkForCatch! DO NOT
+	 * OPTIMISE!
+	 */
+
+	Tcl_Obj *objPtr = OBJ_AT_TOS;
+
+	DECACHE_STACK_INFO();
+
+	/*
+	 * TIP #280: The invoking context is left NULL for a dynamically
 	 * constructed command. We cannot match its lines to the outer
 	 * context.
 	 */
 
-	result = TclCompEvalObj(interp, objPtr, NULL,0);
-#endif
+	result = TclCompEvalObj(interp, objPtr, NULL, 0);
 	CACHE_STACK_INFO();
 	if (result == TCL_OK) {
 	    /*
@@ -1652,69 +2582,75 @@ TclExecuteByteCode(interp, codePtr)
 
 	    objResultPtr = Tcl_GetObjResult(interp);
 	    TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)),
-			   Tcl_GetObjResult(interp));
+		    Tcl_GetObjResult(interp));
 
 	    /*
-	     * Reset the interp's result to avoid possible duplications
-	     * of large objects [Bug 781585]. We do not call
-	     * Tcl_ResetResult() to avoid any side effects caused by
-	     * the resetting of errorInfo and errorCode [Bug 804681], 
-	     * which are not needed here. We chose instead to manipulate
-	     * the interp's object result directly.
+	     * Reset the interp's result to avoid possible duplications of
+	     * large objects [Bug 781585]. We do not call Tcl_ResetResult to
+	     * avoid any side effects caused by the resetting of errorInfo and
+	     * errorCode [Bug 804681], which are not needed here. We chose
+	     * instead to manipulate the interp's object result directly.
 	     *
-	     * Note that the result object is now in objResultPtr, it
-	     * keeps the refCount it had in its role of iPtr->objResultPtr.
+	     * Note that the result object is now in objResultPtr, it keeps
+	     * the refCount it had in its role of iPtr->objResultPtr.
 	     */
-	    {
-	        Tcl_Obj *newObjResultPtr;
-		TclNewObj(newObjResultPtr);
-		Tcl_IncrRefCount(newObjResultPtr);
-		iPtr->objResultPtr = newObjResultPtr;
-	    }
 
+	    TclNewObj(objPtr);
+	    Tcl_IncrRefCount(objPtr);
+	    iPtr->objResultPtr = objPtr;
 	    NEXT_INST_F(1, 1, -1);
 	} else {
 	    cleanup = 1;
 	    goto processExceptionReturn;
 	}
+    }
 
-    case INST_EXPR_STK:
-	objPtr = stackPtr[stackTop];
+    case INST_EXPR_STK: {
+	Tcl_Obj *objPtr, *valuePtr;
+
+	objPtr = OBJ_AT_TOS;
 	DECACHE_STACK_INFO();
-	Tcl_ResetResult(interp);
+	/*Tcl_ResetResult(interp);*/
 	result = Tcl_ExprObj(interp, objPtr, &valuePtr);
 	CACHE_STACK_INFO();
-	if (result != TCL_OK) {
-	    TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", 
-	        O2S(objPtr)), Tcl_GetObjResult(interp));
+	if (result == TCL_OK) {
+	    objResultPtr = valuePtr;
+	    TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)), valuePtr);
+	    NEXT_INST_F(1, 1, -1);	/* Already has right refct. */
+	} else {
+	    TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", O2S(objPtr)),
+		    Tcl_GetObjResult(interp));
 	    goto checkForCatch;
 	}
-	objResultPtr = valuePtr;
-	TRACE_WITH_OBJ(("\"%.30s\" => ", O2S(objPtr)), valuePtr);
-	NEXT_INST_F(1, 1, -1); /* already has right refct */
+    }
 
     /*
      * ---------------------------------------------------------
-     *     Start of INST_LOAD instructions.
+     *	   Start of INST_LOAD instructions.
      *
-     * WARNING: more 'goto' here than your doctor recommended!
-     * The different instructions set the value of some variables
-     * and then jump to somme common execution code.
+     * WARNING: more 'goto' here than your doctor recommended! The different
+     * instructions set the value of some variables and then jump to some
+     * common execution code.
      */
+    {
+	int opnd, pcAdjustment;
+	Tcl_Obj *part1Ptr, *part2Ptr;
+	Var *varPtr, *arrayPtr;
+	Tcl_Obj *objPtr;
 
     case INST_LOAD_SCALAR1:
+    instLoadScalar1:
 	opnd = TclGetUInt1AtPtr(pc+1);
-	varPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = varPtr->name;
+	varPtr = &(compiledLocals[opnd]);
 	while (TclIsVarLink(varPtr)) {
 	    varPtr = varPtr->value.linkPtr;
 	}
 	TRACE(("%u => ", opnd));
-	if (TclIsVarScalar(varPtr) && !TclIsVarUndefined(varPtr) 
-	        && (varPtr->tracePtr == NULL)) {
+	if (TclIsVarDirectReadable(varPtr)) {
 	    /*
 	     * No errors, no traces: just get the value.
 	     */
+
 	    objResultPtr = varPtr->value.objPtr;
 	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
 	    NEXT_INST_F(2, 0, 1);
@@ -1722,22 +2658,21 @@ TclExecuteByteCode(interp, codePtr)
 	pcAdjustment = 2;
 	cleanup = 0;
 	arrayPtr = NULL;
-	part2 = NULL;
+	part1Ptr = part2Ptr = NULL;
 	goto doCallPtrGetVar;
 
     case INST_LOAD_SCALAR4:
 	opnd = TclGetUInt4AtPtr(pc+1);
-	varPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = varPtr->name;
+	varPtr = &(compiledLocals[opnd]);
 	while (TclIsVarLink(varPtr)) {
 	    varPtr = varPtr->value.linkPtr;
 	}
 	TRACE(("%u => ", opnd));
-	if (TclIsVarScalar(varPtr) && !TclIsVarUndefined(varPtr) 
-	        && (varPtr->tracePtr == NULL)) {
+	if (TclIsVarDirectReadable(varPtr)) {
 	    /*
 	     * No errors, no traces: just get the value.
 	     */
+
 	    objResultPtr = varPtr->value.objPtr;
 	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
 	    NEXT_INST_F(5, 0, 1);
@@ -1745,46 +2680,7 @@ TclExecuteByteCode(interp, codePtr)
 	pcAdjustment = 5;
 	cleanup = 0;
 	arrayPtr = NULL;
-	part2 = NULL;
-	goto doCallPtrGetVar;
-
-    case INST_LOAD_ARRAY_STK:
-	cleanup = 2;
-	part2 = Tcl_GetString(stackPtr[stackTop]);  /* element name */
-	objPtr = stackPtr[stackTop-1]; /* array name */
-	TRACE(("\"%.30s(%.30s)\" => ", O2S(objPtr), part2));
-	goto doLoadStk;
-
-    case INST_LOAD_STK:
-    case INST_LOAD_SCALAR_STK:
-	cleanup = 1;
-	part2 = NULL;
-	objPtr = stackPtr[stackTop]; /* variable name */
-	TRACE(("\"%.30s\" => ", O2S(objPtr)));
-
-    doLoadStk:
-	part1 = TclGetString(objPtr);
-	varPtr = TclObjLookupVar(interp, objPtr, part2, 
-	         TCL_LEAVE_ERR_MSG, "read",
-                 /*createPart1*/ 0,
-	         /*createPart2*/ 1, &arrayPtr);
-	if (varPtr == NULL) {
-	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
-	    result = TCL_ERROR;
-	    goto checkForCatch;
-	}
-	if (TclIsVarScalar(varPtr) && !TclIsVarUndefined(varPtr) 
-	        && (varPtr->tracePtr == NULL)
-	        && ((arrayPtr == NULL) 
-		        || (arrayPtr->tracePtr == NULL))) {
-	    /*
-	     * No errors, no traces: just get the value.
-	     */
-	    objResultPtr = varPtr->value.objPtr;
-	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
-	    NEXT_INST_V(1, cleanup, 1);
-	}
-	pcAdjustment = 1;
+	part1Ptr = part2Ptr = NULL;
 	goto doCallPtrGetVar;
 
     case INST_LOAD_ARRAY4:
@@ -1795,143 +2691,267 @@ TclExecuteByteCode(interp, codePtr)
     case INST_LOAD_ARRAY1:
 	opnd = TclGetUInt1AtPtr(pc+1);
 	pcAdjustment = 2;
-    
+
     doLoadArray:
-	part2 = TclGetString(stackPtr[stackTop]);
-	arrayPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = arrayPtr->name;
+	part1Ptr = NULL;
+	part2Ptr = OBJ_AT_TOS;
+	arrayPtr = &(compiledLocals[opnd]);
 	while (TclIsVarLink(arrayPtr)) {
 	    arrayPtr = arrayPtr->value.linkPtr;
 	}
-	TRACE(("%u \"%.30s\" => ", opnd, part2));
-	varPtr = TclLookupArrayElement(interp, part1, part2, 
-	        TCL_LEAVE_ERR_MSG, "read", 0, 1, arrayPtr);
+	TRACE(("%u \"%.30s\" => ", opnd, O2S(part2Ptr)));
+	if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr)) {
+	    varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr);
+	    if (varPtr && TclIsVarDirectReadable(varPtr)) {
+		/*
+		 * No errors, no traces: just get the value.
+		 */
+
+		objResultPtr = varPtr->value.objPtr;
+		TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+		NEXT_INST_F(pcAdjustment, 1, 1);
+	    }
+	}
+	varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr,
+		TCL_LEAVE_ERR_MSG, "read", 0, 1, arrayPtr, opnd);
 	if (varPtr == NULL) {
-	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
+	    TRACE_APPEND(("ERROR: %.30s\n",
+				 O2S(Tcl_GetObjResult(interp))));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
-	if (TclIsVarScalar(varPtr) && !TclIsVarUndefined(varPtr) 
-	        && (varPtr->tracePtr == NULL)
-	        && ((arrayPtr == NULL) 
-		        || (arrayPtr->tracePtr == NULL))) {
-	    /*
-	     * No errors, no traces: just get the value.
-	     */
-	    objResultPtr = varPtr->value.objPtr;
-	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
-	    NEXT_INST_F(pcAdjustment, 1, 1);
-	}
 	cleanup = 1;
 	goto doCallPtrGetVar;
 
+    case INST_LOAD_ARRAY_STK:
+	cleanup = 2;
+	part2Ptr = OBJ_AT_TOS;		/* element name */
+	objPtr = OBJ_UNDER_TOS;		/* array name */
+	TRACE(("\"%.30s(%.30s)\" => ", O2S(objPtr), O2S(part2Ptr)));
+	goto doLoadStk;
+
+    case INST_LOAD_STK:
+    case INST_LOAD_SCALAR_STK:
+	cleanup = 1;
+	part2Ptr = NULL;
+	objPtr = OBJ_AT_TOS;		/* variable name */
+	TRACE(("\"%.30s\" => ", O2S(objPtr)));
+
+    doLoadStk:
+	part1Ptr = objPtr;
+	varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr,
+		TCL_LEAVE_ERR_MSG, "read", /*createPart1*/0, /*createPart2*/1,
+		&arrayPtr);
+	if (varPtr) {
+	    if (TclIsVarDirectReadable2(varPtr, arrayPtr)) {
+		/*
+		 * No errors, no traces: just get the value.
+		 */
+
+		objResultPtr = varPtr->value.objPtr;
+		TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+		NEXT_INST_V(1, cleanup, 1);
+	    }
+	    pcAdjustment = 1;
+	    opnd = -1;
+	    goto doCallPtrGetVar;
+	} else {
+	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
+	    result = TCL_ERROR;
+	    goto checkForCatch;
+	}
+
     doCallPtrGetVar:
 	/*
-	 * There are either errors or the variable is traced:
-	 * call TclPtrGetVar to process fully.
+	 * There are either errors or the variable is traced: call
+	 * TclPtrGetVar to process fully.
 	 */
 
 	DECACHE_STACK_INFO();
-	objResultPtr = TclPtrGetVar(interp, varPtr, arrayPtr, part1, 
-	        part2, TCL_LEAVE_ERR_MSG);
+	objResultPtr = TclPtrGetVar(interp, varPtr, arrayPtr,
+		part1Ptr, part2Ptr, TCL_LEAVE_ERR_MSG, opnd);
 	CACHE_STACK_INFO();
-	if (objResultPtr == NULL) {
+	if (objResultPtr) {
+	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	    NEXT_INST_V(pcAdjustment, cleanup, 1);
+	} else {
 	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
-	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
-	NEXT_INST_V(pcAdjustment, cleanup, 1);
+    }
 
     /*
-     *     End of INST_LOAD instructions.
+     *	   End of INST_LOAD instructions.
      * ---------------------------------------------------------
      */
 
     /*
      * ---------------------------------------------------------
-     *     Start of INST_STORE and related instructions.
+     *	   Start of INST_STORE and related instructions.
      *
-     * WARNING: more 'goto' here than your doctor recommended!
-     * The different instructions set the value of some variables
-     * and then jump to somme common execution code.
+     * WARNING: more 'goto' here than your doctor recommended! The different
+     * instructions set the value of some variables and then jump to somme
+     * common execution code.
      */
 
+    {
+	int opnd, pcAdjustment, storeFlags;
+	Tcl_Obj *part1Ptr, *part2Ptr;
+	Var *varPtr, *arrayPtr;
+	Tcl_Obj *objPtr, *valuePtr;
+
+    case INST_STORE_ARRAY4:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	pcAdjustment = 5;
+	goto doStoreArrayDirect;
+
+    case INST_STORE_ARRAY1:
+	opnd = TclGetUInt1AtPtr(pc+1);
+	pcAdjustment = 2;
+
+    doStoreArrayDirect:
+	valuePtr = OBJ_AT_TOS;
+	part2Ptr = OBJ_UNDER_TOS;
+	arrayPtr = &(compiledLocals[opnd]);
+	TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, O2S(part2Ptr),
+		O2S(valuePtr)));
+	while (TclIsVarLink(arrayPtr)) {
+	    arrayPtr = arrayPtr->value.linkPtr;
+	}
+	if (TclIsVarArray(arrayPtr) && !WriteTraced(arrayPtr)) {
+	    varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr);
+	    if (varPtr && TclIsVarDirectWritable(varPtr)) {
+		tosPtr--;
+		Tcl_DecrRefCount(OBJ_AT_TOS);
+		OBJ_AT_TOS = valuePtr;
+		goto doStoreVarDirect;
+	    }
+	}
+	cleanup = 2;
+	storeFlags = TCL_LEAVE_ERR_MSG;
+	part1Ptr = NULL;
+	goto doStoreArrayDirectFailed;
+
+    case INST_STORE_SCALAR4:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	pcAdjustment = 5;
+	goto doStoreScalarDirect;
+
+    case INST_STORE_SCALAR1:
+	opnd = TclGetUInt1AtPtr(pc+1);
+	pcAdjustment = 2;
+
+    doStoreScalarDirect:
+	valuePtr = OBJ_AT_TOS;
+	varPtr = &(compiledLocals[opnd]);
+	TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr)));
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+	if (TclIsVarDirectWritable(varPtr)) {
+    doStoreVarDirect:
+	    /*
+	     * No traces, no errors, plain 'set': we can safely inline. The
+	     * value *will* be set to what's requested, so that the stack top
+	     * remains pointing to the same Tcl_Obj.
+	     */
+
+	    valuePtr = varPtr->value.objPtr;
+	    if (valuePtr != NULL) {
+		TclDecrRefCount(valuePtr);
+	    }
+	    objResultPtr = OBJ_AT_TOS;
+	    varPtr->value.objPtr = objResultPtr;
+#ifndef TCL_COMPILE_DEBUG
+	    if (*(pc+pcAdjustment) == INST_POP) {
+		tosPtr--;
+		NEXT_INST_F((pcAdjustment+1), 0, 0);
+	    }
+#else
+	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+#endif
+	    Tcl_IncrRefCount(objResultPtr);
+	    NEXT_INST_F(pcAdjustment, 0, 0);
+	}
+	storeFlags = TCL_LEAVE_ERR_MSG;
+	part1Ptr = NULL;
+	goto doStoreScalar;
+
     case INST_LAPPEND_STK:
-	valuePtr = stackPtr[stackTop]; /* value to append */
-	part2 = NULL;
-	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE 
-		      | TCL_LIST_ELEMENT);
+	valuePtr = OBJ_AT_TOS; /* value to append */
+	part2Ptr = NULL;
+	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
+		| TCL_LIST_ELEMENT);
 	goto doStoreStk;
 
     case INST_LAPPEND_ARRAY_STK:
-	valuePtr = stackPtr[stackTop]; /* value to append */
-	part2 = TclGetString(stackPtr[stackTop - 1]);
-	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE 
-		      | TCL_LIST_ELEMENT);
+	valuePtr = OBJ_AT_TOS; /* value to append */
+	part2Ptr = OBJ_UNDER_TOS;
+	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
+		| TCL_LIST_ELEMENT);
 	goto doStoreStk;
 
     case INST_APPEND_STK:
-	valuePtr = stackPtr[stackTop]; /* value to append */
-	part2 = NULL;
+	valuePtr = OBJ_AT_TOS; /* value to append */
+	part2Ptr = NULL;
 	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
 	goto doStoreStk;
 
     case INST_APPEND_ARRAY_STK:
-	valuePtr = stackPtr[stackTop]; /* value to append */
-	part2 = TclGetString(stackPtr[stackTop - 1]);
+	valuePtr = OBJ_AT_TOS; /* value to append */
+	part2Ptr = OBJ_UNDER_TOS;
 	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
 	goto doStoreStk;
 
     case INST_STORE_ARRAY_STK:
-	valuePtr = stackPtr[stackTop];
-	part2 = TclGetString(stackPtr[stackTop - 1]);
+	valuePtr = OBJ_AT_TOS;
+	part2Ptr = OBJ_UNDER_TOS;
 	storeFlags = TCL_LEAVE_ERR_MSG;
 	goto doStoreStk;
 
     case INST_STORE_STK:
     case INST_STORE_SCALAR_STK:
-	valuePtr = stackPtr[stackTop];
-	part2 = NULL;
+	valuePtr = OBJ_AT_TOS;
+	part2Ptr = NULL;
 	storeFlags = TCL_LEAVE_ERR_MSG;
 
     doStoreStk:
-	objPtr = stackPtr[stackTop - 1 - (part2 != NULL)]; /* variable name */
-	part1 = TclGetString(objPtr);
+	objPtr = OBJ_AT_DEPTH(1 + (part2Ptr != NULL)); /* variable name */
+	part1Ptr = objPtr;
 #ifdef TCL_COMPILE_DEBUG
-	if (part2 == NULL) {
-	    TRACE(("\"%.30s\" <- \"%.30s\" =>", 
-	            part1, O2S(valuePtr)));
+	if (part2Ptr == NULL) {
+	    TRACE(("\"%.30s\" <- \"%.30s\" =>", O2S(part1Ptr),O2S(valuePtr)));
 	} else {
 	    TRACE(("\"%.30s(%.30s)\" <- \"%.30s\" => ",
-		    part1, part2, O2S(valuePtr)));
+		    O2S(part1Ptr), O2S(part2Ptr), O2S(valuePtr)));
 	}
 #endif
-	varPtr = TclObjLookupVar(interp, objPtr, part2, 
-	         TCL_LEAVE_ERR_MSG, "set",
-                 /*createPart1*/ 1,
-	         /*createPart2*/ 1, &arrayPtr);
-	if (varPtr == NULL) {
+	varPtr = TclObjLookupVarEx(interp, objPtr,part2Ptr, TCL_LEAVE_ERR_MSG,
+		"set", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
+	if (varPtr) {
+	    cleanup = ((part2Ptr == NULL)? 2 : 3);
+	    pcAdjustment = 1;
+	    opnd = -1;
+	    goto doCallPtrSetVar;
+	} else {
 	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
-	cleanup = ((part2 == NULL)? 2 : 3);
-	pcAdjustment = 1;
-	goto doCallPtrSetVar;
 
     case INST_LAPPEND_ARRAY4:
 	opnd = TclGetUInt4AtPtr(pc+1);
 	pcAdjustment = 5;
-	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE 
-		      | TCL_LIST_ELEMENT);
+	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
+		| TCL_LIST_ELEMENT);
 	goto doStoreArray;
 
     case INST_LAPPEND_ARRAY1:
 	opnd = TclGetUInt1AtPtr(pc+1);
 	pcAdjustment = 2;
-	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE 
-		      | TCL_LIST_ELEMENT);
+	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
+		| TCL_LIST_ELEMENT);
 	goto doStoreArray;
 
     case INST_APPEND_ARRAY4:
@@ -1946,49 +2966,41 @@ TclExecuteByteCode(interp, codePtr)
 	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
 	goto doStoreArray;
 
-    case INST_STORE_ARRAY4:
-	opnd = TclGetUInt4AtPtr(pc+1);
-	pcAdjustment = 5;
-	storeFlags = TCL_LEAVE_ERR_MSG;
-	goto doStoreArray;
-
-    case INST_STORE_ARRAY1:
-	opnd = TclGetUInt1AtPtr(pc+1);
-	pcAdjustment = 2;
-	storeFlags = TCL_LEAVE_ERR_MSG;
-	    
     doStoreArray:
-	valuePtr = stackPtr[stackTop];
-	part2 = TclGetString(stackPtr[stackTop - 1]);
-	arrayPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = arrayPtr->name;
-	TRACE(("%u \"%.30s\" <- \"%.30s\" => ",
-		    opnd, part2, O2S(valuePtr)));
+	valuePtr = OBJ_AT_TOS;
+	part2Ptr = OBJ_UNDER_TOS;
+	arrayPtr = &(compiledLocals[opnd]);
+	TRACE(("%u \"%.30s\" <- \"%.30s\" => ", opnd, O2S(part2Ptr),
+		O2S(valuePtr)));
 	while (TclIsVarLink(arrayPtr)) {
 	    arrayPtr = arrayPtr->value.linkPtr;
 	}
-	varPtr = TclLookupArrayElement(interp, part1, part2, 
-	        TCL_LEAVE_ERR_MSG, "set", 1, 1, arrayPtr);
-	if (varPtr == NULL) {
+	cleanup = 2;
+	part1Ptr = NULL;
+
+    doStoreArrayDirectFailed:
+	varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr,
+		TCL_LEAVE_ERR_MSG, "set", 1, 1, arrayPtr, opnd);
+	if (varPtr) {
+	    goto doCallPtrSetVar;
+	} else {
 	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
-	cleanup = 2;
-	goto doCallPtrSetVar;
 
     case INST_LAPPEND_SCALAR4:
 	opnd = TclGetUInt4AtPtr(pc+1);
 	pcAdjustment = 5;
-	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE 
-		      | TCL_LIST_ELEMENT);
+	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
+		| TCL_LIST_ELEMENT);
 	goto doStoreScalar;
 
     case INST_LAPPEND_SCALAR1:
 	opnd = TclGetUInt1AtPtr(pc+1);
-	pcAdjustment = 2;	    
-	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE 
-		      | TCL_LIST_ELEMENT);
+	pcAdjustment = 2;
+	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE
+		| TCL_LIST_ELEMENT);
 	goto doStoreScalar;
 
     case INST_APPEND_SCALAR4:
@@ -1999,248 +3011,317 @@ TclExecuteByteCode(interp, codePtr)
 
     case INST_APPEND_SCALAR1:
 	opnd = TclGetUInt1AtPtr(pc+1);
-	pcAdjustment = 2;	    
+	pcAdjustment = 2;
 	storeFlags = (TCL_LEAVE_ERR_MSG | TCL_APPEND_VALUE);
 	goto doStoreScalar;
 
-    case INST_STORE_SCALAR4:
-	opnd = TclGetUInt4AtPtr(pc+1);
-	pcAdjustment = 5;
-	storeFlags = TCL_LEAVE_ERR_MSG;
-	goto doStoreScalar;
-
-    case INST_STORE_SCALAR1:
-	opnd = TclGetUInt1AtPtr(pc+1);
-	pcAdjustment = 2;
-	storeFlags = TCL_LEAVE_ERR_MSG;
-
     doStoreScalar:
-	valuePtr = stackPtr[stackTop];
-	varPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = varPtr->name;
+	valuePtr = OBJ_AT_TOS;
+	varPtr = &(compiledLocals[opnd]);
 	TRACE(("%u <- \"%.30s\" => ", opnd, O2S(valuePtr)));
 	while (TclIsVarLink(varPtr)) {
 	    varPtr = varPtr->value.linkPtr;
 	}
 	cleanup = 1;
 	arrayPtr = NULL;
-	part2 = NULL;
+	part1Ptr = part2Ptr = NULL;
 
     doCallPtrSetVar:
-	if ((storeFlags == TCL_LEAVE_ERR_MSG)
-	        && !((varPtr->flags & VAR_IN_HASHTABLE) 
-		        && (varPtr->hPtr == NULL))
-	        && (varPtr->tracePtr == NULL)
-	        && (TclIsVarScalar(varPtr) 
-		        || TclIsVarUndefined(varPtr))
-	        && ((arrayPtr == NULL) 
-		        || (arrayPtr->tracePtr == NULL))) {
-	    /*
-	     * No traces, no errors, plain 'set': we can safely inline.
-	     * The value *will* be set to what's requested, so that 
-	     * the stack top remains pointing to the same Tcl_Obj.
-	     */
-	    valuePtr = varPtr->value.objPtr;
-	    objResultPtr = stackPtr[stackTop];
-	    if (valuePtr != objResultPtr) {
-		if (valuePtr != NULL) {
-		    TclDecrRefCount(valuePtr);
-		} else {
-		    TclSetVarScalar(varPtr);
-		    TclClearVarUndefined(varPtr);
-		}
-		varPtr->value.objPtr = objResultPtr;
-		Tcl_IncrRefCount(objResultPtr);
-	    }
+	DECACHE_STACK_INFO();
+	objResultPtr = TclPtrSetVar(interp, varPtr, arrayPtr,
+		part1Ptr, part2Ptr, valuePtr, storeFlags, opnd);
+	CACHE_STACK_INFO();
+	if (objResultPtr) {
 #ifndef TCL_COMPILE_DEBUG
 	    if (*(pc+pcAdjustment) == INST_POP) {
 		NEXT_INST_V((pcAdjustment+1), cleanup, 0);
 	    }
-#else
-	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
 #endif
+	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
 	    NEXT_INST_V(pcAdjustment, cleanup, 1);
 	} else {
-	    DECACHE_STACK_INFO();
-	    objResultPtr = TclPtrSetVar(interp, varPtr, arrayPtr, 
-	            part1, part2, valuePtr, storeFlags);
-	    CACHE_STACK_INFO();
-	    if (objResultPtr == NULL) {
-		TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
-		result = TCL_ERROR;
-		goto checkForCatch;
-	    }
-	}
-#ifndef TCL_COMPILE_DEBUG
-	if (*(pc+pcAdjustment) == INST_POP) {
-	    NEXT_INST_V((pcAdjustment+1), cleanup, 0);
+	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
+	    result = TCL_ERROR;
+	    goto checkForCatch;
 	}
-#endif
-	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
-	NEXT_INST_V(pcAdjustment, cleanup, 1);
-
+    }
 
     /*
-     *     End of INST_STORE and related instructions.
+     *	   End of INST_STORE and related instructions.
      * ---------------------------------------------------------
      */
 
     /*
      * ---------------------------------------------------------
-     *     Start of INST_INCR instructions.
+     *	   Start of INST_INCR instructions.
      *
-     * WARNING: more 'goto' here than your doctor recommended!
-     * The different instructions set the value of some variables
-     * and then jump to somme common execution code.
+     * WARNING: more 'goto' here than your doctor recommended! The different
+     * instructions set the value of some variables and then jump to somme
+     * common execution code.
      */
 
+/*TODO: Consider more untangling here; merge with LOAD and STORE ? */
+
+    {
+	Tcl_Obj *objPtr, *incrPtr;
+	int opnd, pcAdjustment;
+#ifndef NO_WIDE_TYPE
+	Tcl_WideInt w;
+#endif
+	long i;
+	Tcl_Obj *part1Ptr, *part2Ptr;
+	Var *varPtr, *arrayPtr;
+
     case INST_INCR_SCALAR1:
     case INST_INCR_ARRAY1:
     case INST_INCR_ARRAY_STK:
     case INST_INCR_SCALAR_STK:
     case INST_INCR_STK:
 	opnd = TclGetUInt1AtPtr(pc+1);
-	valuePtr = stackPtr[stackTop];
-	if (valuePtr->typePtr == &tclIntType) {
-	    i = valuePtr->internalRep.longValue;
-	} else if (valuePtr->typePtr == &tclWideIntType) {
-	    TclGetLongFromWide(i,valuePtr);
-	} else {
-	    REQUIRE_WIDE_OR_INT(result, valuePtr, i, w);
-	    if (result != TCL_OK) {
-		TRACE_WITH_OBJ(("%u (by %s) => ERROR converting increment amount to int: ",
-		        opnd, O2S(valuePtr)), Tcl_GetObjResult(interp));
-		DECACHE_STACK_INFO();
-		Tcl_AddErrorInfo(interp, "\n    (reading increment)");
-		CACHE_STACK_INFO();
-		goto checkForCatch;
-	    }
-	    FORCE_LONG(valuePtr, i, w);
-	}
-	stackTop--;
-	TclDecrRefCount(valuePtr);
+	incrPtr = POP_OBJECT();
 	switch (*pc) {
-	    case INST_INCR_SCALAR1:
-		pcAdjustment = 2;
-		goto doIncrScalar;
-	    case INST_INCR_ARRAY1:
-		pcAdjustment = 2;
-		goto doIncrArray;
-	    default:
-		pcAdjustment = 1;
-		goto doIncrStk;
+	case INST_INCR_SCALAR1:
+	    pcAdjustment = 2;
+	    goto doIncrScalar;
+	case INST_INCR_ARRAY1:
+	    pcAdjustment = 2;
+	    goto doIncrArray;
+	default:
+	    pcAdjustment = 1;
+	    goto doIncrStk;
 	}
 
     case INST_INCR_ARRAY_STK_IMM:
     case INST_INCR_SCALAR_STK_IMM:
     case INST_INCR_STK_IMM:
 	i = TclGetInt1AtPtr(pc+1);
+	incrPtr = Tcl_NewIntObj(i);
+	Tcl_IncrRefCount(incrPtr);
 	pcAdjustment = 2;
-	    
+
     doIncrStk:
-	if ((*pc == INST_INCR_ARRAY_STK_IMM) 
-	        || (*pc == INST_INCR_ARRAY_STK)) {
-	    part2 = TclGetString(stackPtr[stackTop]);
-	    objPtr = stackPtr[stackTop - 1];
+	if ((*pc == INST_INCR_ARRAY_STK_IMM)
+		|| (*pc == INST_INCR_ARRAY_STK)) {
+	    part2Ptr = OBJ_AT_TOS;
+	    objPtr = OBJ_UNDER_TOS;
 	    TRACE(("\"%.30s(%.30s)\" (by %ld) => ",
-		    O2S(objPtr), part2, i));
+		    O2S(objPtr), O2S(part2Ptr), i));
 	} else {
-	    part2 = NULL;
-	    objPtr = stackPtr[stackTop];
+	    part2Ptr = NULL;
+	    objPtr = OBJ_AT_TOS;
 	    TRACE(("\"%.30s\" (by %ld) => ", O2S(objPtr), i));
 	}
-	part1 = TclGetString(objPtr);
-
-	varPtr = TclObjLookupVar(interp, objPtr, part2, 
-	        TCL_LEAVE_ERR_MSG, "read", 0, 1, &arrayPtr);
-	if (varPtr == NULL) {
-	    DECACHE_STACK_INFO();
+	part1Ptr = objPtr;
+	opnd = -1;
+	varPtr = TclObjLookupVarEx(interp, objPtr, part2Ptr,
+		TCL_LEAVE_ERR_MSG, "read", 1, 1, &arrayPtr);
+	if (varPtr) {
+	    cleanup = ((part2Ptr == NULL)? 1 : 2);
+	    goto doIncrVar;
+	} else {
 	    Tcl_AddObjErrorInfo(interp,
-	            "\n    (reading value of variable to increment)", -1);
-	    CACHE_STACK_INFO();
+		    "\n    (reading value of variable to increment)", -1);
 	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
 	    result = TCL_ERROR;
+	    Tcl_DecrRefCount(incrPtr);
 	    goto checkForCatch;
 	}
-	cleanup = ((part2 == NULL)? 1 : 2);
-	goto doIncrVar;
 
     case INST_INCR_ARRAY1_IMM:
 	opnd = TclGetUInt1AtPtr(pc+1);
 	i = TclGetInt1AtPtr(pc+2);
+	incrPtr = Tcl_NewIntObj(i);
+	Tcl_IncrRefCount(incrPtr);
 	pcAdjustment = 3;
 
     doIncrArray:
-	part2 = TclGetString(stackPtr[stackTop]);
-	arrayPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = arrayPtr->name;
+	part1Ptr = NULL;
+	part2Ptr = OBJ_AT_TOS;
+	arrayPtr = &(compiledLocals[opnd]);
+	cleanup = 1;
 	while (TclIsVarLink(arrayPtr)) {
 	    arrayPtr = arrayPtr->value.linkPtr;
 	}
-	TRACE(("%u \"%.30s\" (by %ld) => ",
-		    opnd, part2, i));
-	varPtr = TclLookupArrayElement(interp, part1, part2, 
-	        TCL_LEAVE_ERR_MSG, "read", 0, 1, arrayPtr);
-	if (varPtr == NULL) {
+	TRACE(("%u \"%.30s\" (by %ld) => ", opnd, O2S(part2Ptr), i));
+	varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr,
+		TCL_LEAVE_ERR_MSG, "read", 1, 1, arrayPtr, opnd);
+	if (varPtr) {
+	    goto doIncrVar;
+	} else {
 	    TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
 	    result = TCL_ERROR;
+	    Tcl_DecrRefCount(incrPtr);
 	    goto checkForCatch;
 	}
-	cleanup = 1;
-	goto doIncrVar;
 
     case INST_INCR_SCALAR1_IMM:
 	opnd = TclGetUInt1AtPtr(pc+1);
 	i = TclGetInt1AtPtr(pc+2);
 	pcAdjustment = 3;
+	cleanup = 0;
+	varPtr = &(compiledLocals[opnd]);
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+
+	if (TclIsVarDirectModifyable(varPtr)) {
+	    ClientData ptr;
+	    int type;
+
+	    objPtr = varPtr->value.objPtr;
+	    if (GetNumberFromObj(NULL, objPtr, &ptr, &type) == TCL_OK) {
+		if (type == TCL_NUMBER_LONG) {
+		    long augend = *((const long *)ptr);
+		    long sum = augend + i;
+
+		    /*
+		     * Overflow when (augend and sum have different sign) and
+		     * (augend and i have the same sign). This is encapsulated
+		     * in the Overflowing macro.
+		     */
+
+		    if (!Overflowing(augend, i, sum)) {
+			TRACE(("%u %ld => ", opnd, i));
+			if (Tcl_IsShared(objPtr)) {
+			    objPtr->refCount--;	/* We know it's shared. */
+			    TclNewLongObj(objResultPtr, sum);
+			    Tcl_IncrRefCount(objResultPtr);
+			    varPtr->value.objPtr = objResultPtr;
+			} else {
+			    objResultPtr = objPtr;
+			    TclSetLongObj(objPtr, sum);
+			}
+			goto doneIncr;
+		    }
+#ifndef NO_WIDE_TYPE
+		    {
+			w = (Tcl_WideInt)augend;
+
+			TRACE(("%u %ld => ", opnd, i));
+			if (Tcl_IsShared(objPtr)) {
+			    objPtr->refCount--;	/* We know it's shared. */
+			    objResultPtr = Tcl_NewWideIntObj(w+i);
+			    Tcl_IncrRefCount(objResultPtr);
+			    varPtr->value.objPtr = objResultPtr;
+			} else {
+			    objResultPtr = objPtr;
+
+			    /*
+			     * We know the sum value is outside the long
+			     * range; use macro form that doesn't range test
+			     * again.
+			     */
+
+			    TclSetWideIntObj(objPtr, w+i);
+			}
+			goto doneIncr;
+		    }
+#endif
+		}	/* end if (type == TCL_NUMBER_LONG) */
+#ifndef NO_WIDE_TYPE
+		if (type == TCL_NUMBER_WIDE) {
+		    Tcl_WideInt sum;
+		    w = *((const Tcl_WideInt *)ptr);
+		    sum = w + i;
+
+		    /*
+		     * Check for overflow.
+		     */
+
+		    if (!Overflowing(w, i, sum)) {
+			TRACE(("%u %ld => ", opnd, i));
+			if (Tcl_IsShared(objPtr)) {
+			    objPtr->refCount--;	/* We know it's shared. */
+			    objResultPtr = Tcl_NewWideIntObj(sum);
+			    Tcl_IncrRefCount(objResultPtr);
+			    varPtr->value.objPtr = objResultPtr;
+			} else {
+			    objResultPtr = objPtr;
+
+			    /*
+			     * We *do not* know the sum value is outside the
+			     * long range (wide + long can yield long); use
+			     * the function call that checks range.
+			     */
+
+			    Tcl_SetWideIntObj(objPtr, sum);
+			}
+			goto doneIncr;
+		    }
+		}
+#endif
+	    }
+	    if (Tcl_IsShared(objPtr)) {
+		objPtr->refCount--;	/* We know it's shared */
+		objResultPtr = Tcl_DuplicateObj(objPtr);
+		Tcl_IncrRefCount(objResultPtr);
+		varPtr->value.objPtr = objResultPtr;
+	    } else {
+		objResultPtr = objPtr;
+	    }
+	    TclNewLongObj(incrPtr, i);
+	    result = TclIncrObj(interp, objResultPtr, incrPtr);
+	    Tcl_DecrRefCount(incrPtr);
+	    if (result == TCL_OK) {
+		goto doneIncr;
+	    } else {
+		TRACE_APPEND(("ERROR: %.30s\n",
+			O2S(Tcl_GetObjResult(interp))));
+		goto checkForCatch;
+	    }
+	}
+
+	/*
+	 * All other cases, flow through to generic handling.
+	 */
+
+	TclNewLongObj(incrPtr, i);
+	Tcl_IncrRefCount(incrPtr);
 
     doIncrScalar:
-	varPtr = &(varFramePtr->compiledLocals[opnd]);
-	part1 = varPtr->name;
+	varPtr = &(compiledLocals[opnd]);
 	while (TclIsVarLink(varPtr)) {
 	    varPtr = varPtr->value.linkPtr;
 	}
 	arrayPtr = NULL;
-	part2 = NULL;
+	part1Ptr = part2Ptr = NULL;
 	cleanup = 0;
 	TRACE(("%u %ld => ", opnd, i));
 
-
     doIncrVar:
-	objPtr = varPtr->value.objPtr;
-	if (TclIsVarScalar(varPtr)
-	        && !TclIsVarUndefined(varPtr) 
-	        && (varPtr->tracePtr == NULL)
-	        && ((arrayPtr == NULL) 
-		        || (arrayPtr->tracePtr == NULL))
-	        && (objPtr->typePtr == &tclIntType)) {
-	    /*
-	     * No errors, no traces, the variable already has an
-	     * integer value: inline processing.
-	     */
-
-	    i += objPtr->internalRep.longValue;
+	if (TclIsVarDirectModifyable2(varPtr, arrayPtr)) {
+	    objPtr = varPtr->value.objPtr;
 	    if (Tcl_IsShared(objPtr)) {
-		objResultPtr = Tcl_NewLongObj(i);
-		TclDecrRefCount(objPtr);
+		objPtr->refCount--;	/* We know it's shared */
+		objResultPtr = Tcl_DuplicateObj(objPtr);
 		Tcl_IncrRefCount(objResultPtr);
 		varPtr->value.objPtr = objResultPtr;
 	    } else {
-		Tcl_SetLongObj(objPtr, i);
 		objResultPtr = objPtr;
 	    }
-	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	    result = TclIncrObj(interp, objResultPtr, incrPtr);
+	    Tcl_DecrRefCount(incrPtr);
+	    if (result == TCL_OK) {
+		goto doneIncr;
+	    } else {
+		TRACE_APPEND(("ERROR: %.30s\n",
+			O2S(Tcl_GetObjResult(interp))));
+		goto checkForCatch;
+	    }
 	} else {
 	    DECACHE_STACK_INFO();
-	    objResultPtr = TclPtrIncrVar(interp, varPtr, arrayPtr, part1, 
-                    part2, i, TCL_LEAVE_ERR_MSG);
+	    objResultPtr = TclPtrIncrObjVar(interp, varPtr, arrayPtr,
+		    part1Ptr, part2Ptr, incrPtr, TCL_LEAVE_ERR_MSG, opnd);
 	    CACHE_STACK_INFO();
+	    Tcl_DecrRefCount(incrPtr);
 	    if (objResultPtr == NULL) {
-		TRACE_APPEND(("ERROR: %.30s\n", O2S(Tcl_GetObjResult(interp))));
+		TRACE_APPEND(("ERROR: %.30s\n",
+			O2S(Tcl_GetObjResult(interp))));
 		result = TCL_ERROR;
 		goto checkForCatch;
 	    }
 	}
+    doneIncr:
 	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
 #ifndef TCL_COMPILE_DEBUG
 	if (*(pc+pcAdjustment) == INST_POP) {
@@ -2248,250 +3329,532 @@ TclExecuteByteCode(interp, codePtr)
 	}
 #endif
 	NEXT_INST_V(pcAdjustment, cleanup, 1);
-	    	    
+    }
+
     /*
-     *     End of INST_INCR instructions.
+     *	   End of INST_INCR instructions.
      * ---------------------------------------------------------
      */
 
+    /*
+     * ---------------------------------------------------------
+     *	   Start of INST_EXIST instructions.
+     */
+    {
+	Tcl_Obj *part1Ptr, *part2Ptr;
+	Var *varPtr, *arrayPtr;
 
-    case INST_JUMP1:
-	opnd = TclGetInt1AtPtr(pc+1);
-	TRACE(("%d => new pc %u\n", opnd,
-	        (unsigned int)(pc + opnd - codePtr->codeStart)));
-	NEXT_INST_F(opnd, 0, 0);
+    case INST_EXIST_SCALAR: {
+	int opnd = TclGetUInt4AtPtr(pc+1);
 
-    case INST_JUMP4:
-	opnd = TclGetInt4AtPtr(pc+1);
-	TRACE(("%d => new pc %u\n", opnd,
-	        (unsigned int)(pc + opnd - codePtr->codeStart)));
-	NEXT_INST_F(opnd, 0, 0);
+	varPtr = &(compiledLocals[opnd]);
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+	TRACE(("%u => ", opnd));
+	if (ReadTraced(varPtr)) {
+	    DECACHE_STACK_INFO();
+	    TclObjCallVarTraces(iPtr, NULL, varPtr, NULL, NULL,
+		    TCL_TRACE_READS, 0, opnd);
+	    CACHE_STACK_INFO();
+	    if (TclIsVarUndefined(varPtr)) {
+		TclCleanupVar(varPtr, NULL);
+		varPtr = NULL;
+	    }
+	}
 
-    case INST_JUMP_FALSE4:
-	opnd = 5;                             /* TRUE */
-	pcAdjustment = TclGetInt4AtPtr(pc+1); /* FALSE */
-	goto doJumpTrue;
+	/*
+	 * Tricky! Arrays always exist.
+	 */
 
-    case INST_JUMP_TRUE4:
-	opnd = TclGetInt4AtPtr(pc+1);         /* TRUE */
-	pcAdjustment = 5;                     /* FALSE */
-	goto doJumpTrue;
+	objResultPtr = constants[!varPtr || TclIsVarUndefined(varPtr) ? 0 : 1];
+	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	NEXT_INST_F(5, 0, 1);
+    }
 
-    case INST_JUMP_FALSE1:
-	opnd = 2;                             /* TRUE */
-	pcAdjustment = TclGetInt1AtPtr(pc+1); /* FALSE */
-	goto doJumpTrue;
+    case INST_EXIST_ARRAY: {
+	int opnd = TclGetUInt4AtPtr(pc+1);
+
+	part2Ptr = OBJ_AT_TOS;
+	arrayPtr = &(compiledLocals[opnd]);
+	while (TclIsVarLink(arrayPtr)) {
+	    arrayPtr = arrayPtr->value.linkPtr;
+	}
+	TRACE(("%u \"%.30s\" => ", opnd, O2S(part2Ptr)));
+	if (TclIsVarArray(arrayPtr) && !ReadTraced(arrayPtr)) {
+	    varPtr = VarHashFindVar(arrayPtr->value.tablePtr, part2Ptr);
+	    if (!varPtr || !ReadTraced(varPtr)) {
+		goto doneExistArray;
+	    }
+	}
+	varPtr = TclLookupArrayElement(interp, NULL, part2Ptr, 0, "access",
+		0, 1, arrayPtr, opnd);
+	if (varPtr) {
+	    if (ReadTraced(varPtr) || (arrayPtr && ReadTraced(arrayPtr))) {
+		DECACHE_STACK_INFO();
+		TclObjCallVarTraces(iPtr, arrayPtr, varPtr, NULL, part2Ptr,
+			TCL_TRACE_READS, 0, opnd);
+		CACHE_STACK_INFO();
+	    }
+	    if (TclIsVarUndefined(varPtr)) {
+		TclCleanupVar(varPtr, arrayPtr);
+		varPtr = NULL;
+	    }
+	}
+    doneExistArray:
+	objResultPtr = constants[!varPtr || TclIsVarUndefined(varPtr) ? 0 : 1];
+	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	NEXT_INST_F(5, 1, 1);
+    }
+
+    case INST_EXIST_ARRAY_STK:
+	cleanup = 2;
+	part2Ptr = OBJ_AT_TOS;		/* element name */
+	part1Ptr = OBJ_UNDER_TOS;	/* array name */
+	TRACE(("\"%.30s(%.30s)\" => ", O2S(part1Ptr), O2S(part2Ptr)));
+	goto doExistStk;
+
+    case INST_EXIST_STK:
+	cleanup = 1;
+	part2Ptr = NULL;
+	part1Ptr = OBJ_AT_TOS;		/* variable name */
+	TRACE(("\"%.30s\" => ", O2S(part1Ptr)));
+
+    doExistStk:
+	varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, 0, "access",
+		/*createPart1*/0, /*createPart2*/1, &arrayPtr);
+	if (varPtr) {
+	    if (ReadTraced(varPtr) || (arrayPtr && ReadTraced(arrayPtr))) {
+		DECACHE_STACK_INFO();
+		TclObjCallVarTraces(iPtr, arrayPtr, varPtr, part1Ptr,part2Ptr,
+			TCL_TRACE_READS, 0, -1);
+		CACHE_STACK_INFO();
+	    }
+	    if (TclIsVarUndefined(varPtr)) {
+		TclCleanupVar(varPtr, arrayPtr);
+		varPtr = NULL;
+	    }
+	}
+	objResultPtr = constants[!varPtr || TclIsVarUndefined(varPtr) ? 0 : 1];
+	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	NEXT_INST_V(1, cleanup, 1);
+    }
+
+    /*
+     *	   End of INST_EXIST instructions.
+     * ---------------------------------------------------------
+     */
+
+    case INST_UPVAR: {
+	int opnd;
+	Var *varPtr, *otherPtr;
+
+	TRACE_WITH_OBJ(("upvar "), OBJ_UNDER_TOS);
 
-    case INST_JUMP_TRUE1:
-	opnd = TclGetInt1AtPtr(pc+1);          /* TRUE */
-	pcAdjustment = 2;                      /* FALSE */
-	    
-    doJumpTrue:
 	{
-	    int b;
-		
-	    valuePtr = stackPtr[stackTop];
-	    if (valuePtr->typePtr == &tclIntType) {
-		b = (valuePtr->internalRep.longValue != 0);
-	    } else if (valuePtr->typePtr == &tclDoubleType) {
-		b = (valuePtr->internalRep.doubleValue != 0.0);
-	    } else if (valuePtr->typePtr == &tclWideIntType) {
-		TclGetWide(w,valuePtr);
-		b = (w != W0);
-	    } else {
-		result = Tcl_GetBooleanFromObj(interp, valuePtr, &b);
-		if (result != TCL_OK) {
-		    TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp));
-		    goto checkForCatch;
+	    CallFrame *framePtr, *savedFramePtr;
+
+	    result = TclObjGetFrame(interp, OBJ_UNDER_TOS, &framePtr);
+	    if (result != -1) {
+		/*
+		 * Locate the other variable.
+		 */
+
+		savedFramePtr = iPtr->varFramePtr;
+		iPtr->varFramePtr = framePtr;
+		otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL,
+			(TCL_LEAVE_ERR_MSG), "access",
+			/*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
+		iPtr->varFramePtr = savedFramePtr;
+		if (otherPtr) {
+		    result = TCL_OK;
+		    goto doLinkVars;
 		}
 	    }
-#ifndef TCL_COMPILE_DEBUG
-	    NEXT_INST_F((b? opnd : pcAdjustment), 1, 0);
-#else
-	    if (b) {
-		if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE1)) {
-		    TRACE(("%d => %.20s true, new pc %u\n", opnd, O2S(valuePtr),
-		            (unsigned int)(pc+opnd - codePtr->codeStart)));
-		} else {
-		    TRACE(("%d => %.20s true\n", pcAdjustment, O2S(valuePtr)));
-		}
-		NEXT_INST_F(opnd, 1, 0);
-	    } else {
-		if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE1)) {
-		    TRACE(("%d => %.20s false\n", opnd, O2S(valuePtr)));
-		} else {
-		    opnd = pcAdjustment;
-		    TRACE(("%d => %.20s false, new pc %u\n", opnd, O2S(valuePtr),
-		            (unsigned int)(pc + opnd - codePtr->codeStart)));
+	    result = TCL_ERROR;
+	    goto checkForCatch;
+	}
+
+    case INST_VARIABLE:
+	TRACE(("variable "));
+	otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL,
+		(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access",
+		/*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
+	if (otherPtr) {
+	    /*
+	     * Do the [variable] magic.
+	     */
+
+	    TclSetVarNamespaceVar(otherPtr);
+	    result = TCL_OK;
+	    goto doLinkVars;
+	}
+	result = TCL_ERROR;
+	goto checkForCatch;
+
+    case INST_NSUPVAR:
+	TRACE_WITH_OBJ(("nsupvar "), OBJ_UNDER_TOS);
+
+	{
+	    Tcl_Namespace *nsPtr, *savedNsPtr;
+
+	    result = TclGetNamespaceFromObj(interp, OBJ_UNDER_TOS, &nsPtr);
+	    if (result == TCL_OK) {
+		/*
+		 * Locate the other variable.
+		 */
+
+		savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr;
+		iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr;
+		otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL,
+			(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access",
+			/*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
+		iPtr->varFramePtr->nsPtr = (Namespace *) savedNsPtr;
+		if (otherPtr) {
+		    goto doLinkVars;
 		}
-		NEXT_INST_F(pcAdjustment, 1, 0);
 	    }
-#endif
+	    result = TCL_ERROR;
+	    goto checkForCatch;
 	}
-	    	    
-    case INST_LOR:
-    case INST_LAND:
-    {
+
+    doLinkVars:
+
 	/*
-	 * Operands must be boolean or numeric. No int->double
-	 * conversions are performed.
+	 * If we are here, the local variable has already been created: do the
+	 * little work of TclPtrMakeUpvar that remains to be done right here
+	 * if there are no errors; otherwise, let it handle the case.
 	 */
-		
-	int i1, i2;
-	int iResult;
-	char *s;
-	Tcl_ObjType *t1Ptr, *t2Ptr;
-
-	value2Ptr = stackPtr[stackTop];
-	valuePtr  = stackPtr[stackTop - 1];;
-	t1Ptr = valuePtr->typePtr;
-	t2Ptr = value2Ptr->typePtr;
-
-	if ((t1Ptr == &tclIntType) || (t1Ptr == &tclBooleanType)) {
-	    i1 = (valuePtr->internalRep.longValue != 0);
-	} else if (t1Ptr == &tclWideIntType) {
-	    TclGetWide(w,valuePtr);
-	    i1 = (w != W0);
-	} else if (t1Ptr == &tclDoubleType) {
-	    i1 = (valuePtr->internalRep.doubleValue != 0.0);
-	} else {
-	    s = Tcl_GetStringFromObj(valuePtr, &length);
-	    if (TclLooksLikeInt(s, length)) {
-		GET_WIDE_OR_INT(result, valuePtr, i, w);
-		if (valuePtr->typePtr == &tclIntType) {
-		    i1 = (i != 0);
-		} else {
-		    i1 = (w != W0);
+
+	opnd = TclGetInt4AtPtr(pc+1);;
+	varPtr = &(compiledLocals[opnd]);
+	if ((varPtr != otherPtr) && !TclIsVarTraced(varPtr)
+		&& (TclIsVarUndefined(varPtr) || TclIsVarLink(varPtr))) {
+	    if (!TclIsVarUndefined(varPtr)) {
+		/*
+		 * Then it is a defined link.
+		 */
+
+		Var *linkPtr = varPtr->value.linkPtr;
+
+		if (linkPtr == otherPtr) {
+		    goto doLinkVarsDone;
+		}
+		if (TclIsVarInHash(linkPtr)) {
+		    VarHashRefCount(linkPtr)--;
+		    if (TclIsVarUndefined(linkPtr)) {
+			TclCleanupVar(linkPtr, NULL);
+		    }
 		}
-	    } else {
-		result = Tcl_GetBooleanFromObj((Tcl_Interp *) NULL,
-					       valuePtr, &i1);
-		i1 = (i1 != 0);
 	    }
+	    TclSetVarLink(varPtr);
+	    varPtr->value.linkPtr = otherPtr;
+	    if (TclIsVarInHash(otherPtr)) {
+		VarHashRefCount(otherPtr)++;
+	    }
+	} else {
+	    result = TclPtrObjMakeUpvar(interp, otherPtr, NULL, 0, opnd);
 	    if (result != TCL_OK) {
-		TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
-		        (t1Ptr? t1Ptr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, valuePtr);
-		CACHE_STACK_INFO();
 		goto checkForCatch;
 	    }
 	}
-		
-	if ((t2Ptr == &tclIntType) || (t2Ptr == &tclBooleanType)) {
-	    i2 = (value2Ptr->internalRep.longValue != 0);
-	} else if (t2Ptr == &tclWideIntType) {
-	    TclGetWide(w,value2Ptr);
-	    i2 = (w != W0);
-	} else if (t2Ptr == &tclDoubleType) {
-	    i2 = (value2Ptr->internalRep.doubleValue != 0.0);
-	} else {
-	    s = Tcl_GetStringFromObj(value2Ptr, &length);
-	    if (TclLooksLikeInt(s, length)) {
-		GET_WIDE_OR_INT(result, value2Ptr, i, w);
-		if (value2Ptr->typePtr == &tclIntType) {
-		    i2 = (i != 0);
-		} else {
-		    i2 = (w != W0);
-		}
+
+	/*
+	 * Do not pop the namespace or frame index, it may be needed for other
+	 * variables - and [variable] did not push it at all.
+	 */
+
+    doLinkVarsDone:
+	NEXT_INST_F(5, 1, 0);
+    }
+
+    case INST_JUMP1: {
+	int opnd = TclGetInt1AtPtr(pc+1);
+
+	TRACE(("%d => new pc %u\n", opnd,
+		(unsigned)(pc + opnd - codePtr->codeStart)));
+	NEXT_INST_F(opnd, 0, 0);
+    }
+
+    case INST_JUMP4: {
+	int opnd = TclGetInt4AtPtr(pc+1);
+
+	TRACE(("%d => new pc %u\n", opnd,
+		(unsigned)(pc + opnd - codePtr->codeStart)));
+	NEXT_INST_F(opnd, 0, 0);
+    }
+
+    {
+	int jmpOffset[2], b;
+	Tcl_Obj *valuePtr;
+
+	/* TODO: consider rewrite so we don't compute the offset we're not
+	 * going to take. */
+    case INST_JUMP_FALSE4:
+	jmpOffset[0] = TclGetInt4AtPtr(pc+1);	/* FALSE offset */
+	jmpOffset[1] = 5;			/* TRUE offset*/
+	goto doCondJump;
+
+    case INST_JUMP_TRUE4:
+	jmpOffset[0] = 5;
+	jmpOffset[1] = TclGetInt4AtPtr(pc+1);
+	goto doCondJump;
+
+    case INST_JUMP_FALSE1:
+	jmpOffset[0] = TclGetInt1AtPtr(pc+1);
+	jmpOffset[1] = 2;
+	goto doCondJump;
+
+    case INST_JUMP_TRUE1:
+	jmpOffset[0] = 2;
+	jmpOffset[1] = TclGetInt1AtPtr(pc+1);
+
+    doCondJump:
+	valuePtr = OBJ_AT_TOS;
+
+	/* TODO - check claim that taking address of b harms performance */
+	/* TODO - consider optimization search for constants */
+	result = TclGetBooleanFromObj(interp, valuePtr, &b);
+	if (result != TCL_OK) {
+	    TRACE_WITH_OBJ(("%d => ERROR: ", jmpOffset[
+		    ((*pc == INST_JUMP_FALSE1) || (*pc == INST_JUMP_FALSE4))
+		    ? 0 : 1]), Tcl_GetObjResult(interp));
+	    goto checkForCatch;
+	}
+
+#ifdef TCL_COMPILE_DEBUG
+	if (b) {
+	    if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) {
+		TRACE(("%d => %.20s true, new pc %u\n", jmpOffset[1],
+			O2S(valuePtr),
+			(unsigned)(pc + jmpOffset[1] - codePtr->codeStart)));
 	    } else {
-		result = Tcl_GetBooleanFromObj((Tcl_Interp *) NULL, value2Ptr, &i2);
+		TRACE(("%d => %.20s true\n", jmpOffset[0], O2S(valuePtr)));
 	    }
-	    if (result != TCL_OK) {
-		TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(value2Ptr),
-		        (t2Ptr? t2Ptr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, value2Ptr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
+	} else {
+	    if ((*pc == INST_JUMP_TRUE1) || (*pc == INST_JUMP_TRUE4)) {
+		TRACE(("%d => %.20s false\n", jmpOffset[0], O2S(valuePtr)));
+	    } else {
+		TRACE(("%d => %.20s false, new pc %u\n", jmpOffset[0],
+			O2S(valuePtr),
+			(unsigned)(pc + jmpOffset[1] - codePtr->codeStart)));
 	    }
 	}
+#endif
+	NEXT_INST_F(jmpOffset[b], 1, 0);
+    }
+
+    case INST_JUMP_TABLE: {
+	Tcl_HashEntry *hPtr;
+	JumptableInfo *jtPtr;
+	int opnd;
 
 	/*
-	 * Reuse the valuePtr object already on stack if possible.
+	 * Jump to location looked up in a hashtable; fall through to next
+	 * instr if lookup fails.
 	 */
-	
+
+	opnd = TclGetInt4AtPtr(pc+1);
+	jtPtr = (JumptableInfo *) codePtr->auxDataArrayPtr[opnd].clientData;
+	TRACE(("%d => %.20s ", opnd, O2S(OBJ_AT_TOS)));
+	hPtr = Tcl_FindHashEntry(&jtPtr->hashTable, TclGetString(OBJ_AT_TOS));
+	if (hPtr != NULL) {
+	    int jumpOffset = PTR2INT(Tcl_GetHashValue(hPtr));
+
+	    TRACE_APPEND(("found in table, new pc %u\n",
+		    (unsigned)(pc - codePtr->codeStart + jumpOffset)));
+	    NEXT_INST_F(jumpOffset, 1, 0);
+	} else {
+	    TRACE_APPEND(("not found in table\n"));
+	    NEXT_INST_F(5, 1, 0);
+	}
+    }
+
+    /*
+     * These two instructions are now redundant: the complete logic of the LOR
+     * and LAND is now handled by the expression compiler.
+     */
+
+    case INST_LOR:
+    case INST_LAND: {
+	/*
+	 * Operands must be boolean or numeric. No int->double conversions are
+	 * performed.
+	 */
+
+	int i1, i2, iResult;
+	Tcl_Obj *value2Ptr = OBJ_AT_TOS;
+	Tcl_Obj *valuePtr = OBJ_UNDER_TOS;
+
+	result = TclGetBooleanFromObj(NULL, valuePtr, &i1);
+	if (result != TCL_OK) {
+	    TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
+		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, valuePtr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
+
+	result = TclGetBooleanFromObj(NULL, value2Ptr, &i2);
+	if (result != TCL_OK) {
+	    TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(value2Ptr),
+		    (value2Ptr->typePtr? value2Ptr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, value2Ptr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
+
 	if (*pc == INST_LOR) {
 	    iResult = (i1 || i2);
 	} else {
 	    iResult = (i1 && i2);
 	}
-	if (Tcl_IsShared(valuePtr)) {
-	    objResultPtr = Tcl_NewLongObj(iResult);
-	    TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult));
-	    NEXT_INST_F(1, 2, 1);
-	} else {	/* reuse the valuePtr object */
-	    TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult));
-	    Tcl_SetLongObj(valuePtr, iResult);
-	    NEXT_INST_F(1, 1, 0);
-	}
+	objResultPtr = constants[iResult];
+	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr),O2S(value2Ptr),iResult));
+	NEXT_INST_F(1, 2, 1);
     }
 
     /*
      * ---------------------------------------------------------
-     *     Start of INST_LIST and related instructions.
+     *	   Start of INST_LIST and related instructions.
      */
 
-    case INST_LIST:
+    case INST_LIST: {
 	/*
-	 * Pop the opnd (objc) top stack elements into a new list obj
-	 * and then decrement their ref counts. 
+	 * Pop the opnd (objc) top stack elements into a new list obj and then
+	 * decrement their ref counts.
 	 */
 
+	int opnd;
+
 	opnd = TclGetUInt4AtPtr(pc+1);
-	objResultPtr = Tcl_NewListObj(opnd, &(stackPtr[stackTop - (opnd-1)]));
+	objResultPtr = Tcl_NewListObj(opnd, &OBJ_AT_DEPTH(opnd-1));
 	TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
 	NEXT_INST_V(5, opnd, 1);
+    }
 
-    case INST_LIST_LENGTH:
-	valuePtr = stackPtr[stackTop];
+    case INST_LIST_LENGTH: {
+	Tcl_Obj *valuePtr;
+	int length;
 
-	result = Tcl_ListObjLength(interp, valuePtr, &length);
-	if (result != TCL_OK) {
+	valuePtr = OBJ_AT_TOS;
+
+	result = TclListObjLength(interp, valuePtr, &length);
+	if (result == TCL_OK) {
+	    TclNewIntObj(objResultPtr, length);
+	    TRACE(("%.20s => %d\n", O2S(valuePtr), length));
+	    NEXT_INST_F(1, 1, 1);
+	} else {
 	    TRACE_WITH_OBJ(("%.30s => ERROR: ", O2S(valuePtr)),
-	            Tcl_GetObjResult(interp));
+		    Tcl_GetObjResult(interp));
 	    goto checkForCatch;
 	}
-	objResultPtr = Tcl_NewIntObj(length);
-	TRACE(("%.20s => %d\n", O2S(valuePtr), length));
-	NEXT_INST_F(1, 1, 1);
-	    
-    case INST_LIST_INDEX:
+    }
+
+    case INST_LIST_INDEX: {
 	/*** lindex with objc == 3 ***/
-		
+
+	/* Variables also for INST_LIST_INDEX_IMM */
+
+	int listc, idx, opnd, pcAdjustment;
+	Tcl_Obj **listv;
+	Tcl_Obj *valuePtr, *value2Ptr;
+
 	/*
-	 * Pop the two operands
+	 * Pop the two operands.
 	 */
-	value2Ptr = stackPtr[stackTop];
-	valuePtr  = stackPtr[stackTop- 1];
+
+	value2Ptr = OBJ_AT_TOS;
+	valuePtr = OBJ_UNDER_TOS;
 
 	/*
-	 * Extract the desired list element
+	 * Extract the desired list element.
 	 */
+
+	result = TclListObjGetElements(interp, valuePtr, &listc, &listv);
+	if ((result == TCL_OK) && (value2Ptr->typePtr != &tclListType)
+		&& (TclGetIntForIndexM(NULL , value2Ptr, listc-1,
+			&idx) == TCL_OK)) {
+	    TclDecrRefCount(value2Ptr);
+	    tosPtr--;
+	    pcAdjustment = 1;
+	    goto lindexFastPath;
+	}
+
 	objResultPtr = TclLindexList(interp, valuePtr, value2Ptr);
-	if (objResultPtr == NULL) {
-	    TRACE_WITH_OBJ(("%.30s %.30s => ERROR: ", O2S(valuePtr), O2S(value2Ptr)),
-	            Tcl_GetObjResult(interp));
+	if (objResultPtr) {
+	    /*
+	     * Stash the list element on the stack.
+	     */
+
+	    TRACE(("%.20s %.20s => %s\n",
+		    O2S(valuePtr), O2S(value2Ptr), O2S(objResultPtr)));
+	    NEXT_INST_F(1, 2, -1);	/* Already has the correct refCount */
+	} else {
+	    TRACE_WITH_OBJ(("%.30s %.30s => ERROR: ", O2S(valuePtr),
+		    O2S(value2Ptr)), Tcl_GetObjResult(interp));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
 
+    case INST_LIST_INDEX_IMM:
+	/*** lindex with objc==3 and index in bytecode stream ***/
+
+	pcAdjustment = 5;
+
 	/*
-	 * Stash the list element on the stack
+	 * Pop the list and get the index.
 	 */
-	TRACE(("%.20s %.20s => %s\n",
-	        O2S(valuePtr), O2S(value2Ptr), O2S(objResultPtr)));
-	NEXT_INST_F(1, 2, -1); /* already has the correct refCount */
 
-    case INST_LIST_INDEX_MULTI:
-    {
+	valuePtr = OBJ_AT_TOS;
+	opnd = TclGetInt4AtPtr(pc+1);
+
+	/*
+	 * Get the contents of the list, making sure that it really is a list
+	 * in the process.
+	 */
+
+	result = TclListObjGetElements(interp, valuePtr, &listc, &listv);
+
+	if (result == TCL_OK) {
+	    /*
+	     * Select the list item based on the index. Negative operand means
+	     * end-based indexing.
+	     */
+
+	    if (opnd < -1) {
+		idx = opnd+1 + listc;
+	    } else {
+		idx = opnd;
+	    }
+
+	lindexFastPath:
+	    if (idx >= 0 && idx < listc) {
+		objResultPtr = listv[idx];
+	    } else {
+		TclNewObj(objResultPtr);
+	    }
+
+	    TRACE_WITH_OBJ(("\"%.30s\" %d => ", O2S(valuePtr), opnd),
+		    objResultPtr);
+	    NEXT_INST_F(pcAdjustment, 1, 1);
+	} else {
+	    TRACE_WITH_OBJ(("\"%.30s\" %d => ERROR: ", O2S(valuePtr), opnd),
+		    Tcl_GetObjResult(interp));
+	    goto checkForCatch;
+	}
+    }
+
+    case INST_LIST_INDEX_MULTI: {
 	/*
 	 * 'lindex' with multiple index args:
 	 *
 	 * Determine the count of index args.
 	 */
 
-	int numIdx;
+	int numIdx, opnd;
 
 	opnd = TclGetUInt4AtPtr(pc+1);
 	numIdx = opnd-1;
@@ -2499,143 +3862,318 @@ TclExecuteByteCode(interp, codePtr)
 	/*
 	 * Do the 'lindex' operation.
 	 */
-	objResultPtr = TclLindexFlat(interp, stackPtr[stackTop - numIdx],
-	        numIdx, stackPtr + stackTop - numIdx + 1);
+
+	objResultPtr = TclLindexFlat(interp, OBJ_AT_DEPTH(numIdx),
+		numIdx, &OBJ_AT_DEPTH(numIdx - 1));
 
 	/*
-	 * Check for errors
+	 * Check for errors.
 	 */
-	if (objResultPtr == NULL) {
+
+	if (objResultPtr) {
+	    /*
+	     * Set result.
+	     */
+
+	    TRACE(("%d => %s\n", opnd, O2S(objResultPtr)));
+	    NEXT_INST_V(5, opnd, -1);
+	} else {
 	    TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
-
-	/*
-	 * Set result
-	 */
-	TRACE(("%d => %s\n", opnd, O2S(objResultPtr)));
-	NEXT_INST_V(5, opnd, -1);
     }
 
-    case INST_LSET_FLAT:
-    {
+    case INST_LSET_FLAT: {
 	/*
-	 * Lset with 3, 5, or more args.  Get the number
-	 * of index args.
+	 * Lset with 3, 5, or more args. Get the number of index args.
 	 */
-	int numIdx;
 
-	opnd = TclGetUInt4AtPtr( pc + 1 );
+	int numIdx,opnd;
+	Tcl_Obj *valuePtr, *value2Ptr;
+
+	opnd = TclGetUInt4AtPtr(pc + 1);
 	numIdx = opnd - 2;
 
 	/*
-	 * Get the old value of variable, and remove the stack ref.
-	 * This is safe because the variable still references the
-	 * object; the ref count will never go zero here.
+	 * Get the old value of variable, and remove the stack ref. This is
+	 * safe because the variable still references the object; the ref
+	 * count will never go zero here - we can use the smaller macro
+	 * Tcl_DecrRefCount.
 	 */
+
 	value2Ptr = POP_OBJECT();
-	TclDecrRefCount(value2Ptr); /* This one should be done here */
+	Tcl_DecrRefCount(value2Ptr); /* This one should be done here */
 
 	/*
 	 * Get the new element value.
 	 */
-	valuePtr = stackPtr[stackTop];
+
+	valuePtr = OBJ_AT_TOS;
 
 	/*
-	 * Compute the new variable value
+	 * Compute the new variable value.
 	 */
-	objResultPtr = TclLsetFlat(interp, value2Ptr, numIdx,
-	        stackPtr + stackTop - numIdx, valuePtr);
 
+	objResultPtr = TclLsetFlat(interp, value2Ptr, numIdx,
+		&OBJ_AT_DEPTH(numIdx), valuePtr);
 
 	/*
-	 * Check for errors
+	 * Check for errors.
 	 */
-	if (objResultPtr == NULL) {
+
+	if (objResultPtr) {
+	    /*
+	     * Set result.
+	     */
+
+	    TRACE(("%d => %s\n", opnd, O2S(objResultPtr)));
+	    NEXT_INST_V(5, (numIdx+1), -1);
+	} else {
 	    TRACE_WITH_OBJ(("%d => ERROR: ", opnd), Tcl_GetObjResult(interp));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
+    }
 
+    case INST_LSET_LIST: {
 	/*
-	 * Set result
+	 * 'lset' with 4 args.
 	 */
-	TRACE(("%d => %s\n", opnd, O2S(objResultPtr)));
-	NEXT_INST_V(5, (numIdx+1), -1);
-    }
 
-    case INST_LSET_LIST:
+	Tcl_Obj *objPtr, *valuePtr, *value2Ptr;
+
 	/*
-	 * 'lset' with 4 args.
-	 *
-	 * Get the old value of variable, and remove the stack ref.
-	 * This is safe because the variable still references the
-	 * object; the ref count will never go zero here.
+	 * Get the old value of variable, and remove the stack ref. This is
+	 * safe because the variable still references the object; the ref
+	 * count will never go zero here - we can use the smaller macro
+	 * Tcl_DecrRefCount.
 	 */
-	objPtr = POP_OBJECT(); 
-	TclDecrRefCount(objPtr); /* This one should be done here */
-	
+
+	objPtr = POP_OBJECT();
+	Tcl_DecrRefCount(objPtr);	/* This one should be done here. */
+
 	/*
-	 * Get the new element value, and the index list
+	 * Get the new element value, and the index list.
 	 */
-	valuePtr = stackPtr[stackTop];
-	value2Ptr = stackPtr[stackTop - 1];
-	
+
+	valuePtr = OBJ_AT_TOS;
+	value2Ptr = OBJ_UNDER_TOS;
+
 	/*
-	 * Compute the new variable value
+	 * Compute the new variable value.
 	 */
+
 	objResultPtr = TclLsetList(interp, objPtr, value2Ptr, valuePtr);
 
 	/*
-	 * Check for errors
+	 * Check for errors.
 	 */
-	if (objResultPtr == NULL) {
+
+	if (objResultPtr) {
+	    /*
+	     * Set result.
+	     */
+
+	    TRACE(("=> %s\n", O2S(objResultPtr)));
+	    NEXT_INST_F(1, 2, -1);
+	} else {
 	    TRACE_WITH_OBJ(("\"%.30s\" => ERROR: ", O2S(value2Ptr)),
-	            Tcl_GetObjResult(interp));
+		    Tcl_GetObjResult(interp));
 	    result = TCL_ERROR;
 	    goto checkForCatch;
 	}
+    }
+
+    case INST_LIST_RANGE_IMM: {
+	/*** lrange with objc==4 and both indices in bytecode stream ***/
+
+	int listc, fromIdx, toIdx;
+	Tcl_Obj **listv, *valuePtr;
+
+	/*
+	 * Pop the list and get the indices.
+	 */
+
+	valuePtr = OBJ_AT_TOS;
+	fromIdx = TclGetInt4AtPtr(pc+1);
+	toIdx = TclGetInt4AtPtr(pc+5);
+
+	/*
+	 * Get the contents of the list, making sure that it really is a list
+	 * in the process.
+	 */
+	result = TclListObjGetElements(interp, valuePtr, &listc, &listv);
+
+	/*
+	 * Skip a lot of work if we're about to throw the result away (common
+	 * with uses of [lassign]).
+	 */
+
+	if (result == TCL_OK) {
+#ifndef TCL_COMPILE_DEBUG
+	    if (*(pc+9) == INST_POP) {
+		NEXT_INST_F(10, 1, 0);
+	    }
+#endif
+	} else {
+	    TRACE_WITH_OBJ(("\"%.30s\" %d %d => ERROR: ", O2S(valuePtr),
+		    fromIdx, toIdx), Tcl_GetObjResult(interp));
+	    goto checkForCatch;
+	}
+
+	/*
+	 * Adjust the indices for end-based handling.
+	 */
+
+	if (fromIdx < -1) {
+	    fromIdx += 1+listc;
+	    if (fromIdx < -1) {
+		fromIdx = -1;
+	    }
+	} else if (fromIdx > listc) {
+	    fromIdx = listc;
+	}
+	if (toIdx < -1) {
+	    toIdx += 1+listc;
+	    if (toIdx < -1) {
+		toIdx = -1;
+	    }
+	} else if (toIdx > listc) {
+	    toIdx = listc;
+	}
 
 	/*
-	 * Set result
+	 * Check if we are referring to a valid, non-empty list range, and if
+	 * so, build the list of elements in that range.
 	 */
-	TRACE(("=> %s\n", O2S(objResultPtr)));
-	NEXT_INST_F(1, 2, -1);
+
+	if (fromIdx<=toIdx && fromIdx<listc && toIdx>=0) {
+	    if (fromIdx<0) {
+		fromIdx = 0;
+	    }
+	    if (toIdx >= listc) {
+		toIdx = listc-1;
+	    }
+	    objResultPtr = Tcl_NewListObj(toIdx-fromIdx+1, listv+fromIdx);
+	} else {
+	    TclNewObj(objResultPtr);
+	}
+
+	TRACE_WITH_OBJ(("\"%.30s\" %d %d => ", O2S(valuePtr),
+		TclGetInt4AtPtr(pc+1), TclGetInt4AtPtr(pc+5)), objResultPtr);
+	NEXT_INST_F(9, 1, 1);
+    }
+
+    case INST_LIST_IN:
+    case INST_LIST_NOT_IN: {
+	/*
+	 * Basic list containment operators.
+	 */
+
+	int found, s1len, s2len, llen, i;
+	Tcl_Obj *valuePtr, *value2Ptr, *o;
+	char *s1;
+	const char *s2;
+
+	value2Ptr = OBJ_AT_TOS;
+	valuePtr = OBJ_UNDER_TOS;
+
+	/* TODO: Consider more efficient tests than strcmp() */
+	s1 = TclGetStringFromObj(valuePtr, &s1len);
+	result = TclListObjLength(interp, value2Ptr, &llen);
+	if (result != TCL_OK) {
+	    TRACE_WITH_OBJ(("\"%.30s\" \"%.30s\" => ERROR: ", O2S(valuePtr),
+		    O2S(value2Ptr)), Tcl_GetObjResult(interp));
+	    goto checkForCatch;
+	}
+	found = 0;
+	if (llen > 0) {
+	    /*
+	     * An empty list doesn't match anything.
+	     */
+
+	    i = 0;
+	    do {
+		Tcl_ListObjIndex(NULL, value2Ptr, i, &o);
+		if (o != NULL) {
+		    s2 = TclGetStringFromObj(o, &s2len);
+		} else {
+		    s2 = "";
+		}
+		if (s1len == s2len) {
+		    found = (strcmp(s1, s2) == 0);
+		}
+		i++;
+	    } while (i < llen && found == 0);
+	}
+
+	if (*pc == INST_LIST_NOT_IN) {
+	    found = !found;
+	}
+
+	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), found));
+
+	/*
+	 * Peep-hole optimisation: if you're about to jump, do jump from here.
+	 * We're saving the effort of pushing a boolean value only to pop it
+	 * for branching.
+	 */
+
+	pc++;
+#ifndef TCL_COMPILE_DEBUG
+	switch (*pc) {
+	case INST_JUMP_FALSE1:
+	    NEXT_INST_F((found ? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
+	case INST_JUMP_TRUE1:
+	    NEXT_INST_F((found ? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
+	case INST_JUMP_FALSE4:
+	    NEXT_INST_F((found ? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
+	case INST_JUMP_TRUE4:
+	    NEXT_INST_F((found ? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
+	}
+#endif
+	objResultPtr = constants[found];
+	NEXT_INST_F(0, 2, 1);
+    }
 
     /*
-     *     End of INST_LIST and related instructions.
+     *	   End of INST_LIST and related instructions.
      * ---------------------------------------------------------
      */
 
     case INST_STR_EQ:
-    case INST_STR_NEQ:
-    {
+    case INST_STR_NEQ: {
 	/*
 	 * String (in)equality check
+	 * TODO: Consider merging into INST_STR_CMP
 	 */
+
 	int iResult;
+	Tcl_Obj *valuePtr, *value2Ptr;
 
-	value2Ptr = stackPtr[stackTop];
-	valuePtr = stackPtr[stackTop - 1];
+	value2Ptr = OBJ_AT_TOS;
+	valuePtr = OBJ_UNDER_TOS;
 
 	if (valuePtr == value2Ptr) {
 	    /*
-	     * On the off-chance that the objects are the same,
-	     * we don't really have to think hard about equality.
+	     * On the off-chance that the objects are the same, we don't
+	     * really have to think hard about equality.
 	     */
+
 	    iResult = (*pc == INST_STR_EQ);
 	} else {
 	    char *s1, *s2;
 	    int s1len, s2len;
 
-	    s1 = Tcl_GetStringFromObj(valuePtr, &s1len);
-	    s2 = Tcl_GetStringFromObj(value2Ptr, &s2len);
+	    s1 = TclGetStringFromObj(valuePtr, &s1len);
+	    s2 = TclGetStringFromObj(value2Ptr, &s2len);
 	    if (s1len == s2len) {
 		/*
-		 * We only need to check (in)equality when
-		 * we have equal length strings.
+		 * We only need to check (in)equality when we have equal
+		 * length strings.
 		 */
+
 		if (*pc == INST_STR_NEQ) {
 		    iResult = (strcmp(s1, s2) != 0);
 		} else {
@@ -2647,63 +4185,66 @@ TclExecuteByteCode(interp, codePtr)
 	    }
 	}
 
-	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult));
+	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr),O2S(value2Ptr),iResult));
 
 	/*
-	 * Peep-hole optimisation: if you're about to jump, do jump
-	 * from here.
+	 * Peep-hole optimisation: if you're about to jump, do jump from here.
 	 */
 
 	pc++;
 #ifndef TCL_COMPILE_DEBUG
 	switch (*pc) {
-	    case INST_JUMP_FALSE1:
-		NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
-	    case INST_JUMP_TRUE1:
-		NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
-	    case INST_JUMP_FALSE4:
-		NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
-	    case INST_JUMP_TRUE4:
-		NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
+	case INST_JUMP_FALSE1:
+	    NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
+	case INST_JUMP_TRUE1:
+	    NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
+	case INST_JUMP_FALSE4:
+	    NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
+	case INST_JUMP_TRUE4:
+	    NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
 	}
 #endif
-	objResultPtr = Tcl_NewIntObj(iResult);
+	objResultPtr = constants[iResult];
 	NEXT_INST_F(0, 2, 1);
     }
 
-    case INST_STR_CMP:
-    {
+    case INST_STR_CMP: {
 	/*
-	 * String compare
+	 * String compare.
 	 */
-	CONST char *s1, *s2;
+
+	const char *s1, *s2;
 	int s1len, s2len, iResult;
+	Tcl_Obj *valuePtr, *value2Ptr;
 
-	value2Ptr = stackPtr[stackTop];
-	valuePtr = stackPtr[stackTop - 1];
+    stringCompare:
+	value2Ptr = OBJ_AT_TOS;
+	valuePtr = OBJ_UNDER_TOS;
 
 	/*
-	 * The comparison function should compare up to the
-	 * minimum byte length only.
+	 * The comparison function should compare up to the minimum byte
+	 * length only.
 	 */
+
 	if (valuePtr == value2Ptr) {
 	    /*
-	     * In the pure equality case, set lengths too for
-	     * the checks below (or we could goto beyond it).
+	     * In the pure equality case, set lengths too for the checks below
+	     * (or we could goto beyond it).
 	     */
+
 	    iResult = s1len = s2len = 0;
 	} else if ((valuePtr->typePtr == &tclByteArrayType)
-	        && (value2Ptr->typePtr == &tclByteArrayType)) {
+		&& (value2Ptr->typePtr == &tclByteArrayType)) {
 	    s1 = (char *) Tcl_GetByteArrayFromObj(valuePtr, &s1len);
 	    s2 = (char *) Tcl_GetByteArrayFromObj(value2Ptr, &s2len);
-	    iResult = memcmp(s1, s2, 
-	            (size_t) ((s1len < s2len) ? s1len : s2len));
+	    iResult = memcmp(s1, s2,
+		    (size_t) ((s1len < s2len) ? s1len : s2len));
 	} else if (((valuePtr->typePtr == &tclStringType)
-	        && (value2Ptr->typePtr == &tclStringType))) {
+		&& (value2Ptr->typePtr == &tclStringType))) {
 	    /*
 	     * Do a unicode-specific comparison if both of the args are of
-	     * String type.  If the char length == byte length, we can do a
-	     * memcmp.  In benchmark testing this proved the most efficient
+	     * String type. If the char length == byte length, we can do a
+	     * memcmp. In benchmark testing this proved the most efficient
 	     * check between the unicode and string comparison operations.
 	     */
 
@@ -2719,64 +4260,96 @@ TclExecuteByteCode(interp, codePtr)
 	    }
 	} else {
 	    /*
-	     * We can't do a simple memcmp in order to handle the
-	     * special Tcl \xC0\x80 null encoding for utf-8.
+	     * We can't do a simple memcmp in order to handle the special Tcl
+	     * \xC0\x80 null encoding for utf-8.
 	     */
-	    s1 = Tcl_GetStringFromObj(valuePtr, &s1len);
-	    s2 = Tcl_GetStringFromObj(value2Ptr, &s2len);
+
+	    s1 = TclGetStringFromObj(valuePtr, &s1len);
+	    s2 = TclGetStringFromObj(value2Ptr, &s2len);
 	    iResult = TclpUtfNcmp2(s1, s2,
-	            (size_t) ((s1len < s2len) ? s1len : s2len));
+		    (size_t) ((s1len < s2len) ? s1len : s2len));
 	}
 
 	/*
 	 * Make sure only -1,0,1 is returned
+	 * TODO: consider peephole opt.
 	 */
+
 	if (iResult == 0) {
 	    iResult = s1len - s2len;
 	}
+
+	if (*pc != INST_STR_CMP) {
+	    /*
+	     * Take care of the opcodes that goto'ed into here.
+	     */
+
+	    switch (*pc) {
+	    case INST_EQ:
+		iResult = (iResult == 0);
+		break;
+	    case INST_NEQ:
+		iResult = (iResult != 0);
+		break;
+	    case INST_LT:
+		iResult = (iResult < 0);
+		break;
+	    case INST_GT:
+		iResult = (iResult > 0);
+		break;
+	    case INST_LE:
+		iResult = (iResult <= 0);
+		break;
+	    case INST_GE:
+		iResult = (iResult >= 0);
+		break;
+	    }
+	}
 	if (iResult < 0) {
-	    iResult = -1;
-	} else if (iResult > 0) {
-	    iResult = 1;
+	    TclNewIntObj(objResultPtr, -1);
+	    TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), -1));
+	} else {
+	    objResultPtr = constants[(iResult>0)];
+	    TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr),
+		(iResult > 0)));
 	}
 
-	objResultPtr = Tcl_NewIntObj(iResult);
-	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), iResult));
 	NEXT_INST_F(1, 2, 1);
     }
 
-    case INST_STR_LEN:
-    {
-	int length1;
-		 
-	valuePtr = stackPtr[stackTop];
+    case INST_STR_LEN: {
+	int length;
+	Tcl_Obj *valuePtr;
+
+	valuePtr = OBJ_AT_TOS;
 
 	if (valuePtr->typePtr == &tclByteArrayType) {
-	    (void) Tcl_GetByteArrayFromObj(valuePtr, &length1);
+	    (void) Tcl_GetByteArrayFromObj(valuePtr, &length);
 	} else {
-	    length1 = Tcl_GetCharLength(valuePtr);
+	    length = Tcl_GetCharLength(valuePtr);
 	}
-	objResultPtr = Tcl_NewIntObj(length1);
-	TRACE(("%.20s => %d\n", O2S(valuePtr), length1));
+	TclNewIntObj(objResultPtr, length);
+	TRACE(("%.20s => %d\n", O2S(valuePtr), length));
 	NEXT_INST_F(1, 1, 1);
     }
-	    
-    case INST_STR_INDEX:
-    {
+
+    case INST_STR_INDEX: {
 	/*
-	 * String compare
+	 * String compare.
 	 */
-	int index;
-	bytes = NULL; /* lint */
 
-	value2Ptr = stackPtr[stackTop];
-	valuePtr = stackPtr[stackTop - 1];
+	int index, length;
+	char *bytes;
+	Tcl_Obj *valuePtr, *value2Ptr;
+
+	bytes = NULL; /* lint */
+	value2Ptr = OBJ_AT_TOS;
+	valuePtr = OBJ_UNDER_TOS;
 
 	/*
-	 * If we have a ByteArray object, avoid indexing in the
-	 * Utf string since the byte array contains one byte per
-	 * character.  Otherwise, use the Unicode string rep to
-	 * get the index'th char.
+	 * If we have a ByteArray object, avoid indexing in the Utf string
+	 * since the byte array contains one byte per character. Otherwise,
+	 * use the Unicode string rep to get the index'th char.
 	 */
 
 	if (valuePtr->typePtr == &tclByteArrayType) {
@@ -2785,10 +4358,11 @@ TclExecuteByteCode(interp, codePtr)
 	    /*
 	     * Get Unicode char length to calulate what 'end' means.
 	     */
+
 	    length = Tcl_GetCharLength(valuePtr);
 	}
 
-	result = TclGetIntForIndex(interp, value2Ptr, length - 1, &index);
+	result = TclGetIntForIndexM(interp, value2Ptr, length - 1, &index);
 	if (result != TCL_OK) {
 	    goto checkForCatch;
 	}
@@ -2796,21 +4370,22 @@ TclExecuteByteCode(interp, codePtr)
 	if ((index >= 0) && (index < length)) {
 	    if (valuePtr->typePtr == &tclByteArrayType) {
 		objResultPtr = Tcl_NewByteArrayObj((unsigned char *)
-		        (&bytes[index]), 1);
+			(&bytes[index]), 1);
 	    } else if (valuePtr->bytes && length == valuePtr->length) {
-		objResultPtr = Tcl_NewStringObj((CONST char *)
-		        (&valuePtr->bytes[index]), 1);
+		objResultPtr = Tcl_NewStringObj((const char *)
+			(&valuePtr->bytes[index]), 1);
 	    } else {
 		char buf[TCL_UTF_MAX];
 		Tcl_UniChar ch;
 
 		ch = Tcl_GetUniChar(valuePtr, index);
+
 		/*
-		 * This could be:
-		 * Tcl_NewUnicodeObj((CONST Tcl_UniChar *)&ch, 1)
-		 * but creating the object as a string seems to be
-		 * faster in practical use.
+		 * This could be: Tcl_NewUnicodeObj((const Tcl_UniChar *)&ch,
+		 * 1) but creating the object as a string seems to be faster
+		 * in practical use.
 		 */
+
 		length = Tcl_UniCharToUtf(ch, buf);
 		objResultPtr = Tcl_NewStringObj(buf, length);
 	    }
@@ -2818,26 +4393,26 @@ TclExecuteByteCode(interp, codePtr)
 	    TclNewObj(objResultPtr);
 	}
 
-	TRACE(("%.20s %.20s => %s\n", O2S(valuePtr), O2S(value2Ptr), 
-	        O2S(objResultPtr)));
+	TRACE(("%.20s %.20s => %s\n", O2S(valuePtr), O2S(value2Ptr),
+		O2S(objResultPtr)));
 	NEXT_INST_F(1, 2, 1);
     }
 
-    case INST_STR_MATCH:
-    {
+    case INST_STR_MATCH: {
 	int nocase, match;
+	Tcl_Obj *valuePtr, *value2Ptr;
 
-	nocase    = TclGetInt1AtPtr(pc+1);
-	valuePtr  = stackPtr[stackTop];	        /* String */
-	value2Ptr = stackPtr[stackTop - 1];	/* Pattern */
+	nocase = TclGetInt1AtPtr(pc+1);
+	valuePtr = OBJ_AT_TOS;		/* String */
+	value2Ptr = OBJ_UNDER_TOS;	/* Pattern */
 
 	/*
-	 * Check that at least one of the objects is Unicode before
-	 * promoting both.
+	 * Check that at least one of the objects is Unicode before promoting
+	 * both.
 	 */
 
 	if ((valuePtr->typePtr == &tclStringType)
-	        || (value2Ptr->typePtr == &tclStringType)) {
+		|| (value2Ptr->typePtr == &tclStringType)) {
 	    Tcl_UniChar *ustring1, *ustring2;
 	    int length1, length2;
 
@@ -2845,23 +4420,60 @@ TclExecuteByteCode(interp, codePtr)
 	    ustring2 = Tcl_GetUnicodeFromObj(value2Ptr, &length2);
 	    match = TclUniCharMatch(ustring1, length1, ustring2, length2,
 		    nocase);
+	} else if ((valuePtr->typePtr == &tclByteArrayType) && !nocase) {
+	    unsigned char *string1, *string2;
+	    int length1, length2;
+
+	    string1 = Tcl_GetByteArrayFromObj(valuePtr, &length1);
+	    string2 = Tcl_GetByteArrayFromObj(value2Ptr, &length2);
+	    match = TclByteArrayMatch(string1, length1, string2, length2, 0);
 	} else {
 	    match = Tcl_StringCaseMatch(TclGetString(valuePtr),
 		    TclGetString(value2Ptr), nocase);
 	}
 
 	/*
-	 * Reuse value2Ptr object already on stack if possible.
-	 * Adjustment is 2 due to the nocase byte
+	 * Reuse value2Ptr object already on stack if possible. Adjustment is
+	 * 2 due to the nocase byte
+	 * TODO: consider peephole opt.
 	 */
 
 	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), match));
-	if (Tcl_IsShared(value2Ptr)) {
-	    objResultPtr = Tcl_NewIntObj(match);
+	objResultPtr = constants[match];
+	NEXT_INST_F(2, 2, 1);
+    }
+
+    case INST_REGEXP: {
+	int cflags, match;
+	Tcl_Obj *valuePtr, *value2Ptr;
+	Tcl_RegExp regExpr;
+
+	cflags = TclGetInt1AtPtr(pc+1); /* RE compile flages like NOCASE */
+	valuePtr = OBJ_AT_TOS;		/* String */
+	value2Ptr = OBJ_UNDER_TOS;	/* Pattern */
+
+	regExpr = Tcl_GetRegExpFromObj(interp, value2Ptr, cflags);
+	if (regExpr == NULL) {
+	    match = -1;
+	} else {
+	    match = Tcl_RegExpExecObj(interp, regExpr, valuePtr, 0, 0, 0);
+	}
+
+	/*
+	 * Adjustment is 2 due to the nocase byte
+	 */
+
+	if (match < 0) {
+	    objResultPtr = Tcl_GetObjResult(interp);
+	    TRACE_WITH_OBJ(("%.20s %.20s => ERROR: ",
+		    O2S(valuePtr), O2S(value2Ptr)), objResultPtr);
+	    result = TCL_ERROR;
+	    goto checkForCatch;
+	} else {
+	    TRACE(("%.20s %.20s => %d\n",
+		    O2S(valuePtr), O2S(value2Ptr), match));
+	    objResultPtr = constants[match];
 	    NEXT_INST_F(2, 2, 1);
-	} else {	/* reuse the valuePtr object */
-	    Tcl_SetIntObj(value2Ptr, match);
-	    NEXT_INST_F(2, 1, 0);
 	}
     }
 
@@ -2870,1441 +4482,2277 @@ TclExecuteByteCode(interp, codePtr)
     case INST_LT:
     case INST_GT:
     case INST_LE:
-    case INST_GE:
-    {
-	/*
-	 * Any type is allowed but the two operands must have the
-	 * same type. We will compute value op value2.
-	 */
-
-	Tcl_ObjType *t1Ptr, *t2Ptr;
-	char *s1 = NULL;	/* Init. avoids compiler warning. */
-	char *s2 = NULL;	/* Init. avoids compiler warning. */
-	long i2 = 0;		/* Init. avoids compiler warning. */
-	double d1 = 0.0;	/* Init. avoids compiler warning. */
-	double d2 = 0.0;	/* Init. avoids compiler warning. */
-	long iResult = 0;	/* Init. avoids compiler warning. */
+    case INST_GE: {
+	Tcl_Obj *valuePtr = OBJ_UNDER_TOS;
+	Tcl_Obj *value2Ptr = OBJ_AT_TOS;
+	ClientData ptr1, ptr2;
+	int iResult = 0, compare = 0, type1, type2;
+	double d1, d2, tmp;
+	long l1, l2;
+	mp_int big1, big2;
+#ifndef NO_WIDE_TYPE
+	Tcl_WideInt w1, w2;
+#endif
 
-	value2Ptr = stackPtr[stackTop];
-	valuePtr  = stackPtr[stackTop - 1];
+	if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) {
+	    /*
+	     * At least one non-numeric argument - compare as strings.
+	     */
 
-	/*
-	 * Be careful in the equal-object case; 'NaN' isn't supposed
-	 * to be equal to even itself. [Bug 761471]
-	 */
+	    goto stringCompare;
+	}
+	if (type1 == TCL_NUMBER_NAN) {
+	    /*
+	     * NaN first arg: NaN != to everything, other compares are false.
+	     */
 
-	t1Ptr = valuePtr->typePtr;
+	    iResult = (*pc == INST_NEQ);
+	    goto foundResult;
+	}
 	if (valuePtr == value2Ptr) {
+	    compare = MP_EQ;
+	    goto convertComparison;
+	}
+	if (GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2) != TCL_OK) {
 	    /*
-	     * If we are numeric already, we can proceed to the main
-	     * equality check right now.  Otherwise, we need to try to
-	     * coerce to a numeric type so we can see if we've got a
-	     * NaN but haven't parsed it as numeric.
+	     * At least one non-numeric argument - compare as strings.
 	     */
-	    if (!IS_NUMERIC_TYPE(t1Ptr)) {
-		if (t1Ptr == &tclListType) {
-		    int length;
-		    /*
-		     * Only a list of length 1 can be NaN or such
-		     * things.
-		     */
-		    (void) Tcl_ListObjLength(NULL, valuePtr, &length);
-		    if (length == 1) {
-			goto mustConvertForNaNCheck;
-		    }
-		} else {
-		    /*
-		     * Too bad, we'll have to compute the string and
-		     * try the conversion
-		     */
 
-		  mustConvertForNaNCheck:
-		    s1 = Tcl_GetStringFromObj(valuePtr, &length);
-		    if (TclLooksLikeInt(s1, length)) {
-			GET_WIDE_OR_INT(iResult, valuePtr, i, w);
-		    } else {
-			(void) Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
-				valuePtr, &d1);
-		    }
-		    t1Ptr = valuePtr->typePtr;
-		}
-	    }
+	    goto stringCompare;
+	}
+	if (type2 == TCL_NUMBER_NAN) {
+	    /*
+	     * NaN 2nd arg: NaN != to everything, other compares are false.
+	     */
 
-	    switch (*pc) {
-	    case INST_EQ:
-	    case INST_LE:
-	    case INST_GE:
-		iResult = !((t1Ptr == &tclDoubleType)
-			&& IS_NAN(valuePtr->internalRep.doubleValue));
-		break;
-	    case INST_LT:
-	    case INST_GT:
-		iResult = 0;
-		break;
-	    case INST_NEQ:
-		iResult = ((t1Ptr == &tclDoubleType)
-			&& IS_NAN(valuePtr->internalRep.doubleValue));
-		break;
-	    }
+	    iResult = (*pc == INST_NEQ);
 	    goto foundResult;
 	}
+	switch (type1) {
+	case TCL_NUMBER_LONG:
+	    l1 = *((const long *)ptr1);
+	    switch (type2) {
+	    case TCL_NUMBER_LONG:
+		l2 = *((const long *)ptr2);
+	    longCompare:
+		compare = (l1 < l2) ? MP_LT : ((l1 > l2) ? MP_GT : MP_EQ);
+		break;
+#ifndef NO_WIDE_TYPE
+	    case TCL_NUMBER_WIDE:
+		w2 = *((const Tcl_WideInt *)ptr2);
+		w1 = (Tcl_WideInt)l1;
+		goto wideCompare;
+#endif
+	    case TCL_NUMBER_DOUBLE:
+		d2 = *((const double *)ptr2);
+		d1 = (double) l1;
 
-	t2Ptr = value2Ptr->typePtr;
+		/*
+		 * If the double has a fractional part, or if the long can be
+		 * converted to double without loss of precision, then compare
+		 * as doubles.
+		 */
 
-	/*
-	 * We only want to coerce numeric validation if neither type
-	 * is NULL.  A NULL type means the arg is essentially an empty
-	 * object ("", {} or [list]).
-	 */
-	if (!(     (!t1Ptr && !valuePtr->bytes)
-	        || (valuePtr->bytes && !valuePtr->length)
-		   || (!t2Ptr && !value2Ptr->bytes)
-		   || (value2Ptr->bytes && !value2Ptr->length))) {
-	    if (!IS_NUMERIC_TYPE(t1Ptr)) {
-		s1 = Tcl_GetStringFromObj(valuePtr, &length);
-		if (TclLooksLikeInt(s1, length)) {
-		    GET_WIDE_OR_INT(iResult, valuePtr, i, w);
-		} else {
-		    (void) Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, 
-		            valuePtr, &d1);
+		if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
+			|| l1 == (long) d1
+			|| modf(d2, &tmp) != 0.0) {
+		    goto doubleCompare;
 		}
-		t1Ptr = valuePtr->typePtr;
-	    }
-	    if (!IS_NUMERIC_TYPE(t2Ptr)) {
-		s2 = Tcl_GetStringFromObj(value2Ptr, &length);
-		if (TclLooksLikeInt(s2, length)) {
-		    GET_WIDE_OR_INT(iResult, value2Ptr, i2, w);
-		} else {
-		    (void) Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
-		            value2Ptr, &d2);
-		}
-		t2Ptr = value2Ptr->typePtr;
-	    }
-	}
-	if (!IS_NUMERIC_TYPE(t1Ptr) || !IS_NUMERIC_TYPE(t2Ptr)) {
-	    /*
-	     * One operand is not numeric. Compare as strings.  NOTE:
-	     * strcmp is not correct for \x00 < \x01, but that is
-	     * unlikely to occur here.  We could use the TclUtfNCmp2
-	     * to handle this.
-	     */
-	    int s1len, s2len;
-	    s1 = Tcl_GetStringFromObj(valuePtr, &s1len);
-	    s2 = Tcl_GetStringFromObj(value2Ptr, &s2len);
-	    switch (*pc) {
-	        case INST_EQ:
-		    if (s1len == s2len) {
-			iResult = (strcmp(s1, s2) == 0);
-		    } else {
-			iResult = 0;
-		    }
-		    break;
-	        case INST_NEQ:
-		    if (s1len == s2len) {
-			iResult = (strcmp(s1, s2) != 0);
-		    } else {
-			iResult = 1;
-		    }
-		    break;
-	        case INST_LT:
-		    iResult = (strcmp(s1, s2) < 0);
-		    break;
-	        case INST_GT:
-		    iResult = (strcmp(s1, s2) > 0);
-		    break;
-	        case INST_LE:
-		    iResult = (strcmp(s1, s2) <= 0);
+
+		/*
+		 * Otherwise, to make comparision based on full precision,
+		 * need to convert the double to a suitably sized integer.
+		 *
+		 * Need this to get comparsions like
+		 * 	expr 20000000000000003 < 20000000000000004.0
+		 * right. Converting the first argument to double will yield
+		 * two double values that are equivalent within double
+		 * precision. Converting the double to an integer gets done
+		 * exactly, then integer comparison can tell the difference.
+		 */
+
+		if (d2 < (double)LONG_MIN) {
+		    compare = MP_GT;
 		    break;
-	        case INST_GE:
-		    iResult = (strcmp(s1, s2) >= 0);
+		}
+		if (d2 > (double)LONG_MAX) {
+		    compare = MP_LT;
 		    break;
+		}
+		l2 = (long) d2;
+		goto longCompare;
+	    case TCL_NUMBER_BIG:
+		Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+		if (mp_cmp_d(&big2, 0) == MP_LT) {
+		    compare = MP_GT;
+		} else {
+		    compare = MP_LT;
+		}
+		mp_clear(&big2);
 	    }
-	} else if ((t1Ptr == &tclDoubleType)
-		   || (t2Ptr == &tclDoubleType)) {
-	    /*
-	     * Compare as doubles.
-	     */
-	    if (t1Ptr == &tclDoubleType) {
-		d1 = valuePtr->internalRep.doubleValue;
-		GET_DOUBLE_VALUE(d2, value2Ptr, t2Ptr);
-	    } else {	/* t1Ptr is integer, t2Ptr is double */
-		GET_DOUBLE_VALUE(d1, valuePtr, t1Ptr);
-		d2 = value2Ptr->internalRep.doubleValue;
-	    }
-	    switch (*pc) {
-	        case INST_EQ:
-		    iResult = d1 == d2;
-		    break;
-	        case INST_NEQ:
-		    iResult = d1 != d2;
-		    break;
-	        case INST_LT:
-		    iResult = d1 < d2;
-		    break;
-	        case INST_GT:
-		    iResult = d1 > d2;
-		    break;
-	        case INST_LE:
-		    iResult = d1 <= d2;
+	    break;
+
+#ifndef NO_WIDE_TYPE
+	case TCL_NUMBER_WIDE:
+	    w1 = *((const Tcl_WideInt *)ptr1);
+	    switch (type2) {
+	    case TCL_NUMBER_WIDE:
+		w2 = *((const Tcl_WideInt *)ptr2);
+	    wideCompare:
+		compare = (w1 < w2) ? MP_LT : ((w1 > w2) ? MP_GT : MP_EQ);
+		break;
+	    case TCL_NUMBER_LONG:
+		l2 = *((const long *)ptr2);
+		w2 = (Tcl_WideInt)l2;
+		goto wideCompare;
+	    case TCL_NUMBER_DOUBLE:
+		d2 = *((const double *)ptr2);
+		d1 = (double) w1;
+		if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt)
+			|| w1 == (Tcl_WideInt) d1
+			|| modf(d2, &tmp) != 0.0) {
+		    goto doubleCompare;
+		}
+		if (d2 < (double)LLONG_MIN) {
+		    compare = MP_GT;
 		    break;
-	        case INST_GE:
-		    iResult = d1 >= d2;
+		}
+		if (d2 > (double)LLONG_MAX) {
+		    compare = MP_LT;
 		    break;
+		}
+		w2 = (Tcl_WideInt) d2;
+		goto wideCompare;
+	    case TCL_NUMBER_BIG:
+		Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+		if (mp_cmp_d(&big2, 0) == MP_LT) {
+		    compare = MP_GT;
+		} else {
+		    compare = MP_LT;
+		}
+		mp_clear(&big2);
 	    }
-	} else if ((t1Ptr == &tclWideIntType)
-	        || (t2Ptr == &tclWideIntType)) {
-	    Tcl_WideInt w2;
-	    /*
-	     * Compare as wide ints (neither are doubles)
-	     */
-	    if (t1Ptr == &tclIntType) {
-		w  = Tcl_LongAsWide(valuePtr->internalRep.longValue);
-		TclGetWide(w2,value2Ptr);
-	    } else if (t2Ptr == &tclIntType) {
-		TclGetWide(w,valuePtr);
-		w2 = Tcl_LongAsWide(value2Ptr->internalRep.longValue);
-	    } else {
-		TclGetWide(w,valuePtr);
-		TclGetWide(w2,value2Ptr);
-	    }
-	    switch (*pc) {
-	        case INST_EQ:
-		    iResult = w == w2;
+	    break;
+#endif
+
+	case TCL_NUMBER_DOUBLE:
+	    d1 = *((const double *)ptr1);
+	    switch (type2) {
+	    case TCL_NUMBER_DOUBLE:
+		d2 = *((const double *)ptr2);
+	    doubleCompare:
+		compare = (d1 < d2) ? MP_LT : ((d1 > d2) ? MP_GT : MP_EQ);
+		break;
+	    case TCL_NUMBER_LONG:
+		l2 = *((const long *)ptr2);
+		d2 = (double) l2;
+		if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
+			|| l2 == (long) d2
+			|| modf(d1, &tmp) != 0.0) {
+		    goto doubleCompare;
+		}
+		if (d1 < (double)LONG_MIN) {
+		    compare = MP_LT;
 		    break;
-	        case INST_NEQ:
-		    iResult = w != w2;
+		}
+		if (d1 > (double)LONG_MAX) {
+		    compare = MP_GT;
 		    break;
-	        case INST_LT:
-		    iResult = w < w2;
+		}
+		l1 = (long) d1;
+		goto longCompare;
+#ifndef NO_WIDE_TYPE
+	    case TCL_NUMBER_WIDE:
+		w2 = *((const Tcl_WideInt *)ptr2);
+		d2 = (double) w2;
+		if (DBL_MANT_DIG > CHAR_BIT*sizeof(Tcl_WideInt)
+			|| w2 == (Tcl_WideInt) d2
+			|| modf(d1, &tmp) != 0.0) {
+		    goto doubleCompare;
+		}
+		if (d1 < (double)LLONG_MIN) {
+		    compare = MP_LT;
 		    break;
-	        case INST_GT:
-		    iResult = w > w2;
+		}
+		if (d1 > (double)LLONG_MAX) {
+		    compare = MP_GT;
 		    break;
-	        case INST_LE:
-		    iResult = w <= w2;
+		}
+		w1 = (Tcl_WideInt) d1;
+		goto wideCompare;
+#endif
+	    case TCL_NUMBER_BIG:
+		if (TclIsInfinite(d1)) {
+		    compare = (d1 > 0.0) ? MP_GT : MP_LT;
 		    break;
-	        case INST_GE:
-		    iResult = w >= w2;
+		}
+		Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+		if ((d1 < (double)LONG_MAX) && (d1 > (double)LONG_MIN)) {
+		    if (mp_cmp_d(&big2, 0) == MP_LT) {
+			compare = MP_GT;
+		    } else {
+			compare = MP_LT;
+		    }
+		    mp_clear(&big2);
 		    break;
+		}
+		if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
+			&& modf(d1, &tmp) != 0.0) {
+		    d2 = TclBignumToDouble(&big2);
+		    mp_clear(&big2);
+		    goto doubleCompare;
+		}
+		Tcl_InitBignumFromDouble(NULL, d1, &big1);
+		goto bigCompare;
 	    }
-	} else {
-	    /*
-	     * Compare as ints.
-	     */
-	    i  = valuePtr->internalRep.longValue;
-	    i2 = value2Ptr->internalRep.longValue;
-	    switch (*pc) {
-	        case INST_EQ:
-		    iResult = i == i2;
-		    break;
-	        case INST_NEQ:
-		    iResult = i != i2;
-		    break;
-	        case INST_LT:
-		    iResult = i < i2;
-		    break;
-	        case INST_GT:
-		    iResult = i > i2;
-		    break;
-	        case INST_LE:
-		    iResult = i <= i2;
+	    break;
+
+	case TCL_NUMBER_BIG:
+	    Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
+	    switch (type2) {
+#ifndef NO_WIDE_TYPE
+	    case TCL_NUMBER_WIDE:
+#endif
+	    case TCL_NUMBER_LONG:
+		compare = mp_cmp_d(&big1, 0);
+		mp_clear(&big1);
+		break;
+	    case TCL_NUMBER_DOUBLE:
+		d2 = *((const double *)ptr2);
+		if (TclIsInfinite(d2)) {
+		    compare = (d2 > 0.0) ? MP_LT : MP_GT;
+		    mp_clear(&big1);
 		    break;
-	        case INST_GE:
-		    iResult = i >= i2;
+		}
+		if ((d2 < (double)LONG_MAX) && (d2 > (double)LONG_MIN)) {
+		    compare = mp_cmp_d(&big1, 0);
+		    mp_clear(&big1);
 		    break;
+		}
+		if (DBL_MANT_DIG > CHAR_BIT*sizeof(long)
+			&& modf(d2, &tmp) != 0.0) {
+		    d1 = TclBignumToDouble(&big1);
+		    mp_clear(&big1);
+		    goto doubleCompare;
+		}
+		Tcl_InitBignumFromDouble(NULL, d2, &big2);
+		goto bigCompare;
+	    case TCL_NUMBER_BIG:
+		Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+	    bigCompare:
+		compare = mp_cmp(&big1, &big2);
+		mp_clear(&big1);
+		mp_clear(&big2);
 	    }
 	}
 
-    foundResult:
-	TRACE(("%.20s %.20s => %ld\n", O2S(valuePtr), O2S(value2Ptr), iResult));
+	/*
+	 * Turn comparison outcome into appropriate result for opcode.
+	 */
+
+    convertComparison:
+	switch (*pc) {
+	case INST_EQ:
+	    iResult = (compare == MP_EQ);
+	    break;
+	case INST_NEQ:
+	    iResult = (compare != MP_EQ);
+	    break;
+	case INST_LT:
+	    iResult = (compare == MP_LT);
+	    break;
+	case INST_GT:
+	    iResult = (compare == MP_GT);
+	    break;
+	case INST_LE:
+	    iResult = (compare != MP_GT);
+	    break;
+	case INST_GE:
+	    iResult = (compare != MP_LT);
+	    break;
+	}
 
 	/*
-	 * Peep-hole optimisation: if you're about to jump, do jump
-	 * from here.
+	 * Peep-hole optimisation: if you're about to jump, do jump from here.
 	 */
 
+    foundResult:
 	pc++;
 #ifndef TCL_COMPILE_DEBUG
 	switch (*pc) {
-	    case INST_JUMP_FALSE1:
-		NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
-	    case INST_JUMP_TRUE1:
-		NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
-	    case INST_JUMP_FALSE4:
-		NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
-	    case INST_JUMP_TRUE4:
-		NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
+	case INST_JUMP_FALSE1:
+	    NEXT_INST_F((iResult? 2 : TclGetInt1AtPtr(pc+1)), 2, 0);
+	case INST_JUMP_TRUE1:
+	    NEXT_INST_F((iResult? TclGetInt1AtPtr(pc+1) : 2), 2, 0);
+	case INST_JUMP_FALSE4:
+	    NEXT_INST_F((iResult? 5 : TclGetInt4AtPtr(pc+1)), 2, 0);
+	case INST_JUMP_TRUE4:
+	    NEXT_INST_F((iResult? TclGetInt4AtPtr(pc+1) : 5), 2, 0);
 	}
 #endif
-	objResultPtr = Tcl_NewIntObj(iResult);
+	objResultPtr = constants[iResult];
 	NEXT_INST_F(0, 2, 1);
     }
 
     case INST_MOD:
     case INST_LSHIFT:
-    case INST_RSHIFT:
-    case INST_BITOR:
-    case INST_BITXOR:
-    case INST_BITAND:
-    {
-	/*
-	 * Only integers are allowed. We compute value op value2.
-	 */
-
-	long i2 = 0, rem, negative;
-	long iResult = 0; /* Init. avoids compiler warning. */
-	Tcl_WideInt w2, wResult = W0;
-	int doWide = 0;
-
-	value2Ptr = stackPtr[stackTop];
-	valuePtr  = stackPtr[stackTop - 1]; 
-	if (valuePtr->typePtr == &tclIntType) {
-	    i = valuePtr->internalRep.longValue;
-	} else if (valuePtr->typePtr == &tclWideIntType) {
-	    TclGetWide(w,valuePtr);
-	} else {	/* try to convert to int */
-	    REQUIRE_WIDE_OR_INT(result, valuePtr, i, w);
-	    if (result != TCL_OK) {
-		TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n",
-		        O2S(valuePtr), O2S(value2Ptr), 
-		        (valuePtr->typePtr? 
-			     valuePtr->typePtr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, valuePtr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
-	    }
+    case INST_RSHIFT: {
+	Tcl_Obj *value2Ptr = OBJ_AT_TOS;
+	Tcl_Obj *valuePtr = OBJ_UNDER_TOS;
+	ClientData ptr1, ptr2;
+	int invalid, shift, type1, type2;
+	long l1 = 0;
+
+	result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1);
+	if ((result != TCL_OK) || (type1 == TCL_NUMBER_DOUBLE)
+		|| (type1 == TCL_NUMBER_NAN)) {
+	    result = TCL_ERROR;
+	    TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr),
+		    O2S(value2Ptr), (valuePtr->typePtr?
+		    valuePtr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, valuePtr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
 	}
-	if (value2Ptr->typePtr == &tclIntType) {
-	    i2 = value2Ptr->internalRep.longValue;
-	} else if (value2Ptr->typePtr == &tclWideIntType) {
-	    TclGetWide(w2,value2Ptr);
-	} else {
-	    REQUIRE_WIDE_OR_INT(result, value2Ptr, i2, w2);
-	    if (result != TCL_OK) {
-		TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n",
-		        O2S(valuePtr), O2S(value2Ptr),
-		        (value2Ptr->typePtr?
-			    value2Ptr->typePtr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, value2Ptr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
-	    }
+
+	result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2);
+	if ((result != TCL_OK) || (type2 == TCL_NUMBER_DOUBLE)
+		|| (type2 == TCL_NUMBER_NAN)) {
+	    result = TCL_ERROR;
+	    TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr),
+		    O2S(value2Ptr), (value2Ptr->typePtr?
+		    value2Ptr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, value2Ptr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
 	}
 
-	switch (*pc) {
-	case INST_MOD:
-	    /*
-	     * This code is tricky: C doesn't guarantee much about
-	     * the quotient or remainder, but Tcl does. The
-	     * remainder always has the same sign as the divisor and
-	     * a smaller absolute value.
-	     */
-	    if (value2Ptr->typePtr == &tclWideIntType && w2 == W0) {
-		if (valuePtr->typePtr == &tclIntType) {
-		    TRACE(("%ld "LLD" => DIVIDE BY ZERO\n", i, w2));
-		} else {
-		    TRACE((LLD" "LLD" => DIVIDE BY ZERO\n", w, w2));
+	if (*pc == INST_MOD) {
+	    /* TODO: Attempts to re-use unshared operands on stack */
+
+	    long l2 = 0;	/* silence gcc warning */
+
+	    if (type2 == TCL_NUMBER_LONG) {
+		l2 = *((const long *)ptr2);
+		if (l2 == 0) {
+		    TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr),
+			    O2S(value2Ptr)));
+		    goto divideByZero;
 		}
-		goto divideByZero;
-	    }
-	    if (value2Ptr->typePtr == &tclIntType && i2 == 0) {
-		if (valuePtr->typePtr == &tclIntType) {
-		    TRACE(("%ld %ld => DIVIDE BY ZERO\n", i, i2));
-		} else {
-		    TRACE((LLD" %ld => DIVIDE BY ZERO\n", w, i2));
+		if ((l2 == 1) || (l2 == -1)) {
+		    /*
+		     * Div. by |1| always yields remainder of 0.
+		     */
+
+		    objResultPtr = constants[0];
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
 		}
-		goto divideByZero;
 	    }
-	    negative = 0;
-	    if (valuePtr->typePtr == &tclWideIntType
-		|| value2Ptr->typePtr == &tclWideIntType) {
-		Tcl_WideInt wRemainder;
+	    if (type1 == TCL_NUMBER_LONG) {
+		l1 = *((const long *)ptr1);
+		if (l1 == 0) {
+		    /*
+		     * 0 % (non-zero) always yields remainder of 0.
+		     */
+
+		    objResultPtr = constants[0];
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
+		}
+		if (type2 == TCL_NUMBER_LONG) {
+		    /*
+		     * Both operands are long; do native calculation.
+		     */
+
+		    long lRemainder, lQuotient = l1 / l2;
+
+		    /*
+		     * Force Tcl's integer division rules.
+		     * TODO: examine for logic simplification
+		     */
+
+		    if ((lQuotient < 0 || (lQuotient == 0 &&
+			    ((l1 < 0 && l2 > 0) || (l1 > 0 && l2 < 0)))) &&
+			    (lQuotient * l2 != l1)) {
+			lQuotient -= 1;
+		    }
+		    lRemainder = l1 - l2*lQuotient;
+		    TclNewLongObj(objResultPtr, lRemainder);
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
+		}
+
 		/*
-		 * Promote to wide
+		 * First operand fits in long; second does not, so the second
+		 * has greater magnitude than first. No need to divide to
+		 * determine the remainder.
 		 */
-		if (valuePtr->typePtr == &tclIntType) {
-		    w = Tcl_LongAsWide(i);
-		} else if (value2Ptr->typePtr == &tclIntType) {
-		    w2 = Tcl_LongAsWide(i2);
+
+#ifndef NO_WIDE_TYPE
+		if (type2 == TCL_NUMBER_WIDE) {
+		    Tcl_WideInt w2 = *((const Tcl_WideInt *)ptr2);
+
+		    if ((l1 > 0) ^ (w2 > (Tcl_WideInt)0)) {
+			/*
+			 * Arguments are opposite sign; remainder is sum.
+			 */
+
+			objResultPtr = Tcl_NewWideIntObj(w2+(Tcl_WideInt)l1);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+
+		    /*
+		     * Arguments are same sign; remainder is first operand.
+		     */
+
+		    TRACE(("%s\n", O2S(valuePtr)));
+		    NEXT_INST_F(1, 1, 0);
 		}
-		if (w2 < 0) {
-		    w2 = -w2;
-		    w = -w;
-		    negative = 1;
+#endif
+		{
+		    mp_int big2;
+
+		    Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+
+		    /* TODO: internals intrusion */
+		    if ((l1 > 0) ^ (big2.sign == MP_ZPOS)) {
+			/*
+			 * Arguments are opposite sign; remainder is sum.
+			 */
+
+			mp_int big1;
+
+			TclBNInitBignumFromLong(&big1, l1);
+			mp_add(&big2, &big1, &big2);
+			mp_clear(&big1);
+			objResultPtr = Tcl_NewBignumObj(&big2);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+
+		    /*
+		     * Arguments are same sign; remainder is first operand.
+		     */
+
+		    mp_clear(&big2);
+		    TRACE(("%s\n", O2S(valuePtr)));
+		    NEXT_INST_F(1, 1, 0);
 		}
-		wRemainder  = w % w2;
-		if (wRemainder < 0) {
-		    wRemainder += w2;
+	    }
+#ifndef NO_WIDE_TYPE
+	    if (type1 == TCL_NUMBER_WIDE) {
+		Tcl_WideInt w1 = *((const Tcl_WideInt *)ptr1);
+
+		if (type2 != TCL_NUMBER_BIG) {
+		    Tcl_WideInt w2, wQuotient, wRemainder;
+
+		    Tcl_GetWideIntFromObj(NULL, value2Ptr, &w2);
+		    wQuotient = w1 / w2;
+
+		    /*
+		     * Force Tcl's integer division rules.
+		     * TODO: examine for logic simplification
+		     */
+
+		    if (((wQuotient < (Tcl_WideInt) 0)
+			    || ((wQuotient == (Tcl_WideInt) 0)
+			    && ((w1 < (Tcl_WideInt)0 && w2 > (Tcl_WideInt)0)
+			    || (w1 > (Tcl_WideInt)0 && w2 < (Tcl_WideInt)0))))
+			    && (wQuotient * w2 != w1)) {
+			wQuotient -= (Tcl_WideInt) 1;
+		    }
+		    wRemainder = w1 - w2*wQuotient;
+		    objResultPtr = Tcl_NewWideIntObj(wRemainder);
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
 		}
-		if (negative) {
-		    wRemainder = -wRemainder;
+		{
+		    mp_int big2;
+		    Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+
+		    /* TODO: internals intrusion */
+		    if ((w1 > ((Tcl_WideInt) 0)) ^ (big2.sign == MP_ZPOS)) {
+			/*
+			 * Arguments are opposite sign; remainder is sum.
+			 */
+
+			mp_int big1;
+
+			TclBNInitBignumFromWideInt(&big1, w1);
+			mp_add(&big2, &big1, &big2);
+			mp_clear(&big1);
+			objResultPtr = Tcl_NewBignumObj(&big2);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+
+		    /*
+		     * Arguments are same sign; remainder is first operand.
+		     */
+
+		    mp_clear(&big2);
+		    TRACE(("%s\n", O2S(valuePtr)));
+		    NEXT_INST_F(1, 1, 0);
 		}
-		wResult = wRemainder;
-		doWide = 1;
-		break;
-	    }
-	    if (i2 < 0) {
-		i2 = -i2;
-		i = -i;
-		negative = 1;
-	    }
-	    rem  = i % i2;
-	    if (rem < 0) {
-		rem += i2;
 	    }
-	    if (negative) {
-		rem = -rem;
+#endif
+	    {
+		mp_int big1, big2, bigResult, bigRemainder;
+
+		Tcl_GetBignumFromObj(NULL, valuePtr, &big1);
+		Tcl_GetBignumFromObj(NULL, value2Ptr, &big2);
+		mp_init(&bigResult);
+		mp_init(&bigRemainder);
+		mp_div(&big1, &big2, &bigResult, &bigRemainder);
+		if (!mp_iszero(&bigRemainder)
+			&& (bigRemainder.sign != big2.sign)) {
+		    /*
+		     * Convert to Tcl's integer division rules.
+		     */
+
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		    mp_add(&bigRemainder, &big2, &bigRemainder);
+		}
+		mp_copy(&bigRemainder, &bigResult);
+		mp_clear(&bigRemainder);
+		mp_clear(&big1);
+		mp_clear(&big2);
+		TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+		if (Tcl_IsShared(valuePtr)) {
+		    objResultPtr = Tcl_NewBignumObj(&bigResult);
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
+		}
+		Tcl_SetBignumObj(valuePtr, &bigResult);
+		TRACE(("%s\n", O2S(valuePtr)));
+		NEXT_INST_F(1, 1, 0);
 	    }
-	    iResult = rem;
+	}
+
+	/*
+	 * Reject negative shift argument.
+	 */
+
+	switch (type2) {
+	case TCL_NUMBER_LONG:
+	    invalid = (*((const long *)ptr2) < (long)0);
+	    break;
+#ifndef NO_WIDE_TYPE
+	case TCL_NUMBER_WIDE:
+	    invalid = (*((const Tcl_WideInt *)ptr2) < (Tcl_WideInt)0);
 	    break;
-	case INST_LSHIFT:
+#endif
+	case TCL_NUMBER_BIG: {
+	    mp_int big2;
+
+	    Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+	    invalid = (mp_cmp_d(&big2, 0) == MP_LT);
+	    mp_clear(&big2);
+	    break;
+	}
+	default:
+	    /* Unused, here to silence compiler warning */
+	    invalid = 0;
+	}
+	if (invalid) {
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("negative shift argument", -1));
+	    result = TCL_ERROR;
+	    goto checkForCatch;
+	}
+
+	/*
+	 * Zero shifted any number of bits is still zero.
+	 */
+
+	if ((type1==TCL_NUMBER_LONG) && (*((const long *)ptr1) == (long)0)) {
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    objResultPtr = constants[0];
+	    TRACE(("%s\n", O2S(objResultPtr)));
+	    NEXT_INST_F(1, 2, 1);
+	}
+
+	if (*pc == INST_LSHIFT) {
 	    /*
-	     * Shifts are never usefully 64-bits wide!
+	     * Large left shifts create integer overflow.
+	     *
+	     * BEWARE! Can't use Tcl_GetIntFromObj() here because that
+	     * converts values in the (unsigned) range to their signed int
+	     * counterparts, leading to incorrect results.
 	     */
-	    FORCE_LONG(value2Ptr, i2, w2);
-	    if (valuePtr->typePtr == &tclWideIntType) {
-#ifdef TCL_COMPILE_DEBUG
-		w2 = Tcl_LongAsWide(i2);
-#endif /* TCL_COMPILE_DEBUG */
-		wResult = w;
+
+	    if ((type2 != TCL_NUMBER_LONG)
+		    || (*((const long *)ptr2) > (long) INT_MAX)) {
 		/*
-		 * Shift in steps when the shift gets large to prevent
-		 * annoying compiler/processor bugs. [Bug 868467]
+		 * Technically, we could hold the value (1 << (INT_MAX+1)) in
+		 * an mp_int, but since we're using mp_mul_2d() to do the
+		 * work, and it takes only an int argument, that's a good
+		 * place to draw the line.
 		 */
-		if (i2 >= 64) {
-		    wResult = Tcl_LongAsWide(0);
-		} else if (i2 > 60) {
-		    wResult = w << 30;
-		    wResult <<= 30;
-		    wResult <<= i2-60;
-		} else if (i2 > 30) {
-		    wResult = w << 30;
-		    wResult <<= i2-30;
-		} else {
-		    wResult = w << i2;
-		}
-		doWide = 1;
-		break;
+
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"integer value too large to represent", -1));
+		result = TCL_ERROR;
+		goto checkForCatch;
 	    }
+	    shift = (int)(*((const long *)ptr2));
+
 	    /*
-	     * Shift in steps when the shift gets large to prevent
-	     * annoying compiler/processor bugs. [Bug 868467]
+	     * Handle shifts within the native long range.
 	     */
-	    if (i2 >= 64) {
-		iResult = 0;
-	    } else if (i2 > 60) {
-		iResult = i << 30;
-		iResult <<= 30;
-		iResult <<= i2-60;
-	    } else if (i2 > 30) {
-		iResult = i << 30;
-		iResult <<= i2-30;
-	    } else {
-		iResult = i << i2;
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if ((type1 == TCL_NUMBER_LONG)
+		    && (size_t) shift < CHAR_BIT*sizeof(long)
+		    && ((l1 = *(const long *)ptr1) != 0)
+		    && !((l1>0 ? l1 : ~l1)
+			    & -(1L<<(CHAR_BIT*sizeof(long) - 1 - shift)))) {
+		TclNewLongObj(objResultPtr, (l1<<shift));
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
 	    }
-	    break;
-	case INST_RSHIFT:
+
 	    /*
-	     * The following code is a bit tricky: it ensures that
-	     * right shifts propagate the sign bit even on machines
-	     * where ">>" won't do it by default.
+	     * Handle shifts within the native wide range.
 	     */
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if ((type1 != TCL_NUMBER_BIG)
+		    && ((size_t)shift < CHAR_BIT*sizeof(Tcl_WideInt))) {
+		Tcl_WideInt w;
+
+		TclGetWideIntFromObj(NULL, valuePtr, &w);
+		if (!((w>0 ? w : ~w)
+			& -(((Tcl_WideInt)1)
+			<< (CHAR_BIT*sizeof(Tcl_WideInt) - 1 - shift)))) {
+		    objResultPtr = Tcl_NewWideIntObj(w<<shift);
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
+		}
+	    }
+	} else {
 	    /*
-	     * Shifts are never usefully 64-bits wide!
+	     * Quickly force large right shifts to 0 or -1.
 	     */
-	    FORCE_LONG(value2Ptr, i2, w2);
-	    if (valuePtr->typePtr == &tclWideIntType) {
-#ifdef TCL_COMPILE_DEBUG
-		w2 = Tcl_LongAsWide(i2);
-#endif /* TCL_COMPILE_DEBUG */
-		if (w < 0) {
-		    wResult = ~w;
-		} else {
-		    wResult = w;
-		}
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if ((type2 != TCL_NUMBER_LONG)
+		    || (*(const long *)ptr2 > INT_MAX)) {
 		/*
-		 * Shift in steps when the shift gets large to prevent
-		 * annoying compiler/processor bugs. [Bug 868467]
+		 * Again, technically, the value to be shifted could be an
+		 * mp_int so huge that a right shift by (INT_MAX+1) bits could
+		 * not take us to the result of 0 or -1, but since we're using
+		 * mp_div_2d to do the work, and it takes only an int
+		 * argument, we draw the line there.
 		 */
-		if (i2 >= 64) {
-		    wResult = Tcl_LongAsWide(0);
-		} else if (i2 > 60) {
-		    wResult >>= 30;
-		    wResult >>= 30;
-		    wResult >>= i2-60;
-		} else if (i2 > 30) {
-		    wResult >>= 30;
-		    wResult >>= i2-30;
+
+		int zero;
+
+		switch (type1) {
+		case TCL_NUMBER_LONG:
+		    zero = (*(const long *)ptr1 > 0L);
+		    break;
+#ifndef NO_WIDE_TYPE
+		case TCL_NUMBER_WIDE:
+		    zero = (*(const Tcl_WideInt *)ptr1 > (Tcl_WideInt)0);
+		    break;
+#endif
+		case TCL_NUMBER_BIG: {
+		    mp_int big1;
+		    Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
+		    zero = (mp_cmp_d(&big1, 0) == MP_GT);
+		    mp_clear(&big1);
+		    break;
+		}
+		default:
+		    /* Unused, here to silence compiler warning. */
+		    zero = 0;
+		}
+		if (zero) {
+		    objResultPtr = constants[0];
 		} else {
-		    wResult >>= i2;
+		    TclNewIntObj(objResultPtr, -1);
 		}
-		if (w < 0) {
-		    wResult = ~wResult;
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+	    shift = (int)(*(const long *)ptr2);
+
+	    /*
+	     * Handle shifts within the native long range.
+	     */
+
+	    if (type1 == TCL_NUMBER_LONG) {
+		l1 = *((const long *)ptr1);
+		if ((size_t)shift >= CHAR_BIT*sizeof(long)) {
+		    if (l1 >= (long)0) {
+			objResultPtr = constants[0];
+		    } else {
+			TclNewIntObj(objResultPtr, -1);
+		    }
+		} else {
+		    TclNewLongObj(objResultPtr, (l1 >> shift));
 		}
-		doWide = 1;
-		break;
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+
+#ifndef NO_WIDE_TYPE
+	    /*
+	     * Handle shifts within the native wide range.
+	     */
+
+	    if (type1 == TCL_NUMBER_WIDE) {
+		Tcl_WideInt w = *(const Tcl_WideInt *)ptr1;
+
+		if ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideInt)) {
+		    if (w >= (Tcl_WideInt)0) {
+			objResultPtr = constants[0];
+		    } else {
+			TclNewIntObj(objResultPtr, -1);
+		    }
+		} else {
+		    objResultPtr = Tcl_NewWideIntObj(w >> shift);
+		}
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
 	    }
-	    if (i < 0) {
-		iResult = ~i;
+#endif
+	}
+
+	{
+	    mp_int big, bigResult, bigRemainder;
+
+	    Tcl_TakeBignumFromObj(NULL, valuePtr, &big);
+
+	    mp_init(&bigResult);
+	    if (*pc == INST_LSHIFT) {
+		mp_mul_2d(&big, shift, &bigResult);
 	    } else {
-		iResult = i;
+		mp_init(&bigRemainder);
+		mp_div_2d(&big, shift, &bigResult, &bigRemainder);
+		if (mp_cmp_d(&bigRemainder, 0) == MP_LT) {
+		    /*
+		     * Convert to Tcl's integer division rules.
+		     */
+
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		}
+		mp_clear(&bigRemainder);
+	    }
+	    mp_clear(&big);
+
+	    if (!Tcl_IsShared(valuePtr)) {
+		Tcl_SetBignumObj(valuePtr, &bigResult);
+		TRACE(("%s\n", O2S(valuePtr)));
+		NEXT_INST_F(1, 1, 0);
 	    }
+	    objResultPtr = Tcl_NewBignumObj(&bigResult);
+	}
+	TRACE(("%s\n", O2S(objResultPtr)));
+	NEXT_INST_F(1, 2, 1);
+    }
+
+    case INST_BITOR:
+    case INST_BITXOR:
+    case INST_BITAND: {
+	ClientData ptr1, ptr2;
+	int type1, type2;
+	Tcl_Obj *value2Ptr = OBJ_AT_TOS;
+	Tcl_Obj *valuePtr = OBJ_UNDER_TOS;
+
+	result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1);
+	if ((result != TCL_OK)
+		|| (type1 == TCL_NUMBER_NAN)
+		|| (type1 == TCL_NUMBER_DOUBLE)) {
+	    result = TCL_ERROR;
+	    TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n", O2S(valuePtr),
+		    O2S(value2Ptr), (valuePtr->typePtr?
+		    valuePtr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, valuePtr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
+	result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2);
+	if ((result != TCL_OK) || (type2 == TCL_NUMBER_NAN)
+		|| (type2 == TCL_NUMBER_DOUBLE)) {
+	    result = TCL_ERROR;
+	    TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n", O2S(valuePtr),
+		    O2S(value2Ptr), (value2Ptr->typePtr?
+		    value2Ptr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, value2Ptr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
+
+	if ((type1 == TCL_NUMBER_BIG) || (type2 == TCL_NUMBER_BIG)) {
+	    mp_int big1, big2, bigResult, *First, *Second;
+	    int numPos;
+
+	    Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
+	    Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+
 	    /*
-	     * Shift in steps when the shift gets large to prevent
-	     * annoying compiler/processor bugs. [Bug 868467]
+	     * Count how many positive arguments we have. If only one of the
+	     * arguments is negative, store it in 'Second'.
 	     */
-	    if (i2 >= 64) {
-		iResult = 0;
-	    } else if (i2 > 60) {
-		iResult >>= 30;
-		iResult >>= 30;
-		iResult >>= i2-60;
-	    } else if (i2 > 30) {
-		iResult >>= 30;
-		iResult >>= i2-30;
+
+	    if (mp_cmp_d(&big1, 0) != MP_LT) {
+		numPos = 1 + (mp_cmp_d(&big2, 0) != MP_LT);
+		First = &big1;
+		Second = &big2;
 	    } else {
-		iResult >>= i2;
-	    }
-	    if (i < 0) {
-		iResult = ~iResult;
+		First = &big2;
+		Second = &big1;
+		numPos = (mp_cmp_d(First, 0) != MP_LT);
 	    }
-	    break;
-	case INST_BITOR:
-	    if (valuePtr->typePtr == &tclWideIntType
-		|| value2Ptr->typePtr == &tclWideIntType) {
-		/*
-		 * Promote to wide
-		 */
-		if (valuePtr->typePtr == &tclIntType) {
-		    w = Tcl_LongAsWide(i);
-		} else if (value2Ptr->typePtr == &tclIntType) {
-		    w2 = Tcl_LongAsWide(i2);
+	    mp_init(&bigResult);
+
+	    switch (*pc) {
+	    case INST_BITAND:
+		switch (numPos) {
+		case 2:
+		    /*
+		     * Both arguments positive, base case.
+		     */
+
+		    mp_and(First, Second, &bigResult);
+		    break;
+		case 1:
+		    /*
+		     * First is positive; second negative:
+		     * P & N = P & ~~N = P&~(-N-1) = P & (P ^ (-N-1))
+		     */
+
+		    mp_neg(Second, Second);
+		    mp_sub_d(Second, 1, Second);
+		    mp_xor(First, Second, &bigResult);
+		    mp_and(First, &bigResult, &bigResult);
+		    break;
+		case 0:
+		    /*
+		     * Both arguments negative:
+		     * a & b = ~ (~a | ~b) = -(-a-1|-b-1)-1
+		     */
+
+		    mp_neg(First, First);
+		    mp_sub_d(First, 1, First);
+		    mp_neg(Second, Second);
+		    mp_sub_d(Second, 1, Second);
+		    mp_or(First, Second, &bigResult);
+		    mp_neg(&bigResult, &bigResult);
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		    break;
 		}
-		wResult = w | w2;
-		doWide = 1;
 		break;
-	    }
-	    iResult = i | i2;
-	    break;
-	case INST_BITXOR:
-	    if (valuePtr->typePtr == &tclWideIntType
-		|| value2Ptr->typePtr == &tclWideIntType) {
-		/*
-		 * Promote to wide
-		 */
-		if (valuePtr->typePtr == &tclIntType) {
-		    w = Tcl_LongAsWide(i);
-		} else if (value2Ptr->typePtr == &tclIntType) {
-		    w2 = Tcl_LongAsWide(i2);
+
+	    case INST_BITOR:
+		switch (numPos) {
+		case 2:
+		    /*
+		     * Both arguments positive, base case.
+		     */
+
+		    mp_or(First, Second, &bigResult);
+		    break;
+		case 1:
+		    /*
+		     * First is positive; second negative:
+		     * N|P = ~(~N&~P) = ~((-N-1)&~P) = -((-N-1)&((-N-1)^P))-1
+		     */
+
+		    mp_neg(Second, Second);
+		    mp_sub_d(Second, 1, Second);
+		    mp_xor(First, Second, &bigResult);
+		    mp_and(Second, &bigResult, &bigResult);
+		    mp_neg(&bigResult, &bigResult);
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		    break;
+		case 0:
+		    /*
+		     * Both arguments negative:
+		     * a | b = ~ (~a & ~b) = -(-a-1&-b-1)-1
+		     */
+
+		    mp_neg(First, First);
+		    mp_sub_d(First, 1, First);
+		    mp_neg(Second, Second);
+		    mp_sub_d(Second, 1, Second);
+		    mp_and(First, Second, &bigResult);
+		    mp_neg(&bigResult, &bigResult);
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		    break;
 		}
-		wResult = w ^ w2;
-		doWide = 1;
 		break;
-	    }
-	    iResult = i ^ i2;
-	    break;
-	case INST_BITAND:
-	    if (valuePtr->typePtr == &tclWideIntType
-		|| value2Ptr->typePtr == &tclWideIntType) {
-		/*
-		 * Promote to wide
-		 */
-		if (valuePtr->typePtr == &tclIntType) {
-		    w = Tcl_LongAsWide(i);
-		} else if (value2Ptr->typePtr == &tclIntType) {
-		    w2 = Tcl_LongAsWide(i2);
+
+	    case INST_BITXOR:
+		switch (numPos) {
+		case 2:
+		    /*
+		     * Both arguments positive, base case.
+		     */
+
+		    mp_xor(First, Second, &bigResult);
+		    break;
+		case 1:
+		    /*
+		     * First is positive; second negative:
+		     * P^N = ~(P^~N) = -(P^(-N-1))-1
+		     */
+
+		    mp_neg(Second, Second);
+		    mp_sub_d(Second, 1, Second);
+		    mp_xor(First, Second, &bigResult);
+		    mp_neg(&bigResult, &bigResult);
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		    break;
+		case 0:
+		    /*
+		     * Both arguments negative:
+		     * a ^ b = (~a ^ ~b) = (-a-1^-b-1)
+		     */
+
+		    mp_neg(First, First);
+		    mp_sub_d(First, 1, First);
+		    mp_neg(Second, Second);
+		    mp_sub_d(Second, 1, Second);
+		    mp_xor(First, Second, &bigResult);
+		    break;
 		}
-		wResult = w & w2;
-		doWide = 1;
 		break;
 	    }
-	    iResult = i & i2;
-	    break;
+
+	    mp_clear(&big1);
+	    mp_clear(&big2);
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if (Tcl_IsShared(valuePtr)) {
+		objResultPtr = Tcl_NewBignumObj(&bigResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+	    Tcl_SetBignumObj(valuePtr, &bigResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 0);
 	}
 
-	/*
-	 * Reuse the valuePtr object already on stack if possible.
-	 */
-		
-	if (Tcl_IsShared(valuePtr)) {
-	    if (doWide) {
+#ifndef NO_WIDE_TYPE
+	if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE)) {
+	    Tcl_WideInt wResult, w1, w2;
+
+	    TclGetWideIntFromObj(NULL, valuePtr, &w1);
+	    TclGetWideIntFromObj(NULL, value2Ptr, &w2);
+
+	    switch (*pc) {
+	    case INST_BITAND:
+		wResult = w1 & w2;
+		break;
+	    case INST_BITOR:
+		wResult = w1 | w2;
+		break;
+	    case INST_BITXOR:
+		wResult = w1 ^ w2;
+		break;
+	    default:
+		/* Unused, here to silence compiler warning. */
+		wResult = 0;
+	    }
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if (Tcl_IsShared(valuePtr)) {
 		objResultPtr = Tcl_NewWideIntObj(wResult);
-		TRACE((LLD" "LLD" => "LLD"\n", w, w2, wResult));
-	    } else {
-		objResultPtr = Tcl_NewLongObj(iResult);
-		TRACE(("%ld %ld => %ld\n", i, i2, iResult));
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
 	    }
-	    NEXT_INST_F(1, 2, 1);
-	} else {	/* reuse the valuePtr object */
-	    if (doWide) {
-		TRACE((LLD" "LLD" => "LLD"\n", w, w2, wResult));
-		Tcl_SetWideIntObj(valuePtr, wResult);
-	    } else {
-		TRACE(("%ld %ld => %ld\n", i, i2, iResult));
-		Tcl_SetLongObj(valuePtr, iResult);
+	    Tcl_SetWideIntObj(valuePtr, wResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 0);
+	}
+#endif
+	{
+	    long lResult, l1 = *((const long *)ptr1);
+	    long l2 = *((const long *)ptr2);
+
+	    switch (*pc) {
+	    case INST_BITAND:
+		lResult = l1 & l2;
+		break;
+	    case INST_BITOR:
+		lResult = l1 | l2;
+		break;
+	    case INST_BITXOR:
+		lResult = l1 ^ l2;
+		break;
+	    default:
+		/* Unused, here to silence compiler warning. */
+		lResult = 0;
 	    }
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if (Tcl_IsShared(valuePtr)) {
+		TclNewLongObj(objResultPtr, lResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+	    TclSetLongObj(valuePtr, lResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
 	    NEXT_INST_F(1, 1, 0);
 	}
     }
 
+    case INST_EXPON:
     case INST_ADD:
     case INST_SUB:
-    case INST_MULT:
     case INST_DIV:
-    {
-	/*
-	 * Operands must be numeric and ints get converted to floats
-	 * if necessary. We compute value op value2.
-	 */
+    case INST_MULT: {
+	ClientData ptr1, ptr2;
+	int type1, type2;
+	Tcl_Obj *value2Ptr = OBJ_AT_TOS;
+	Tcl_Obj *valuePtr = OBJ_UNDER_TOS;
+
+	result = GetNumberFromObj(NULL, valuePtr, &ptr1, &type1);
+	if ((result != TCL_OK)
+#ifndef ACCEPT_NAN
+		|| (type1 == TCL_NUMBER_NAN)
+#endif
+		) {
+	    result = TCL_ERROR;
+	    TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n",
+		    O2S(value2Ptr), O2S(valuePtr),
+		    (valuePtr->typePtr? valuePtr->typePtr->name: "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, valuePtr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
 
-	Tcl_ObjType *t1Ptr, *t2Ptr;
-	long i2 = 0, quot, rem;	/* Init. avoids compiler warning. */
-	double d1, d2;
-	long iResult = 0;	/* Init. avoids compiler warning. */
-	double dResult = 0.0;	/* Init. avoids compiler warning. */
-	int doDouble = 0;	/* 1 if doing floating arithmetic */
-	Tcl_WideInt w2, wquot, wrem;
-	Tcl_WideInt wResult = W0; /* Init. avoids compiler warning. */
-	int doWide = 0;		/* 1 if doing wide arithmetic. */
-
-	value2Ptr = stackPtr[stackTop];
-	valuePtr  = stackPtr[stackTop - 1];
-	t1Ptr = valuePtr->typePtr;
-	t2Ptr = value2Ptr->typePtr;
-		
-	if (t1Ptr == &tclIntType) {
-	    i = valuePtr->internalRep.longValue;
-	} else if (t1Ptr == &tclWideIntType) {
-	    TclGetWide(w,valuePtr);
-	} else if ((t1Ptr == &tclDoubleType)
-		   && (valuePtr->bytes == NULL)) {
+#ifdef ACCEPT_NAN
+	if (type1 == TCL_NUMBER_NAN) {
 	    /*
-	     * We can only use the internal rep directly if there is
-	     * no string rep.  Otherwise the string rep might actually
-	     * look like an integer, which is preferred.
+	     * NaN first argument -> result is also NaN.
 	     */
 
-	    d1 = valuePtr->internalRep.doubleValue;
-	} else {
-	    char *s = Tcl_GetStringFromObj(valuePtr, &length);
-	    if (TclLooksLikeInt(s, length)) {
-		GET_WIDE_OR_INT(result, valuePtr, i, w);
-	    } else {
-		result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
-					      valuePtr, &d1);
-	    }
-	    if (result != TCL_OK) {
-		TRACE(("%.20s %.20s => ILLEGAL 1st TYPE %s\n",
-		        s, O2S(valuePtr),
-		        (valuePtr->typePtr?
-			    valuePtr->typePtr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, valuePtr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
-	    }
-	    t1Ptr = valuePtr->typePtr;
+	    NEXT_INST_F(1, 1, 0);
 	}
+#endif
 
-	if (t2Ptr == &tclIntType) {
-	    i2 = value2Ptr->internalRep.longValue;
-	} else if (t2Ptr == &tclWideIntType) {
-	    TclGetWide(w2,value2Ptr);
-	} else if ((t2Ptr == &tclDoubleType)
-		   && (value2Ptr->bytes == NULL)) {
+	result = GetNumberFromObj(NULL, value2Ptr, &ptr2, &type2);
+	if ((result != TCL_OK)
+#ifndef ACCEPT_NAN
+		|| (type2 == TCL_NUMBER_NAN)
+#endif
+		) {
+	    result = TCL_ERROR;
+	    TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n",
+		    O2S(value2Ptr), O2S(valuePtr),
+		    (value2Ptr->typePtr? value2Ptr->typePtr->name: "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, value2Ptr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
+
+#ifdef ACCEPT_NAN
+	if (type2 == TCL_NUMBER_NAN) {
 	    /*
-	     * We can only use the internal rep directly if there is
-	     * no string rep.  Otherwise the string rep might actually
-	     * look like an integer, which is preferred.
+	     * NaN second argument -> result is also NaN.
 	     */
 
-	    d2 = value2Ptr->internalRep.doubleValue;
-	} else {
-	    char *s = Tcl_GetStringFromObj(value2Ptr, &length);
-	    if (TclLooksLikeInt(s, length)) {
-		GET_WIDE_OR_INT(result, value2Ptr, i2, w2);
-	    } else {
-		result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
-		        value2Ptr, &d2);
-	    }
-	    if (result != TCL_OK) {
-		TRACE(("%.20s %.20s => ILLEGAL 2nd TYPE %s\n",
-		        O2S(value2Ptr), s,
-		        (value2Ptr->typePtr?
-			    value2Ptr->typePtr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, value2Ptr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
-	    }
-	    t2Ptr = value2Ptr->typePtr;
+	    objResultPtr = value2Ptr;
+	    NEXT_INST_F(1, 2, 1);
 	}
+#endif
 
-	if ((t1Ptr == &tclDoubleType) || (t2Ptr == &tclDoubleType)) {
+	if ((type1 == TCL_NUMBER_DOUBLE) || (type2 == TCL_NUMBER_DOUBLE)) {
 	    /*
-	     * Do double arithmetic.
+	     * At least one of the values is floating-point, so perform
+	     * floating point calculations.
 	     */
-	    doDouble = 1;
-	    if (t1Ptr == &tclIntType) {
-		d1 = i;       /* promote value 1 to double */
-	    } else if (t2Ptr == &tclIntType) {
-		d2 = i2;      /* promote value 2 to double */
-	    } else if (t1Ptr == &tclWideIntType) {
-		d1 = Tcl_WideAsDouble(w);
-	    } else if (t2Ptr == &tclWideIntType) {
-		d2 = Tcl_WideAsDouble(w2);
-	    }
+
+	    double d1, d2, dResult;
+
+	    Tcl_GetDoubleFromObj(NULL, valuePtr, &d1);
+	    Tcl_GetDoubleFromObj(NULL, value2Ptr, &d2);
+
 	    switch (*pc) {
-	        case INST_ADD:
-		    dResult = d1 + d2;
-		    break;
-	        case INST_SUB:
-		    dResult = d1 - d2;
-		    break;
-	        case INST_MULT:
-		    dResult = d1 * d2;
-		    break;
-	        case INST_DIV:
-		    if (d2 == 0.0) {
-			TRACE(("%.6g %.6g => DIVIDE BY ZERO\n", d1, d2));
-			goto divideByZero;
-		    }
-		    dResult = d1 / d2;
-		    break;
+	    case INST_ADD:
+		dResult = d1 + d2;
+		break;
+	    case INST_SUB:
+		dResult = d1 - d2;
+		break;
+	    case INST_MULT:
+		dResult = d1 * d2;
+		break;
+	    case INST_DIV:
+#ifndef IEEE_FLOATING_POINT
+		if (d2 == 0.0) {
+		    TRACE(("%.6g %.6g => DIVIDE BY ZERO\n", d1, d2));
+		    goto divideByZero;
+		}
+#endif
+		/*
+		 * We presume that we are running with zero-divide unmasked if
+		 * we're on an IEEE box. Otherwise, this statement might cause
+		 * demons to fly out our noses.
+		 */
+
+		dResult = d1 / d2;
+		break;
+	    case INST_EXPON:
+		if (d1==0.0 && d2<0.0) {
+		    TRACE(("%.6g %.6g => EXPONENT OF ZERO\n", d1, d2));
+		    goto exponOfZero;
+		}
+		dResult = pow(d1, d2);
+		break;
+	    default:
+		/* Unused, here to silence compiler warning. */
+		dResult = 0;
 	    }
-		    
+
+#ifndef ACCEPT_NAN
 	    /*
 	     * Check now for IEEE floating-point error.
 	     */
-		    
-	    if (IS_NAN(dResult) || IS_INF(dResult)) {
+
+	    if (TclIsNaN(dResult)) {
 		TRACE(("%.20s %.20s => IEEE FLOATING PT ERROR\n",
-		        O2S(valuePtr), O2S(value2Ptr)));
+			O2S(valuePtr), O2S(value2Ptr)));
 		DECACHE_STACK_INFO();
 		TclExprFloatError(interp, dResult);
 		CACHE_STACK_INFO();
 		result = TCL_ERROR;
 		goto checkForCatch;
 	    }
-	} else if ((t1Ptr == &tclWideIntType) 
-		   || (t2Ptr == &tclWideIntType)) {
-	    /*
-	     * Do wide integer arithmetic.
-	     */
-	    doWide = 1;
-	    if (t1Ptr == &tclIntType) {
-		w = Tcl_LongAsWide(i);
-	    } else if (t2Ptr == &tclIntType) {
-		w2 = Tcl_LongAsWide(i2);
+#endif
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if (Tcl_IsShared(valuePtr)) {
+		TclNewDoubleObj(objResultPtr, dResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
 	    }
-	    switch (*pc) {
-	        case INST_ADD:
-		    wResult = w + w2;
-		    break;
-	        case INST_SUB:
-		    wResult = w - w2;
-		    break;
-	        case INST_MULT:
-		    wResult = w * w2;
-		    break;
-	        case INST_DIV:
+	    TclSetDoubleObj(valuePtr, dResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 0);
+	}
+
+	if ((sizeof(long) >= 2*sizeof(int)) && (*pc == INST_MULT)
+		&& (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
+	    long l1 = *((const long *)ptr1);
+	    long l2 = *((const long *)ptr2);
+
+	    if ((l1 <= INT_MAX) && (l1 >= INT_MIN)
+		    && (l2 <= INT_MAX) && (l2 >= INT_MIN)) {
+		long lResult = l1 * l2;
+
+		TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+		if (Tcl_IsShared(valuePtr)) {
+		    TclNewLongObj(objResultPtr,lResult);
+		    TRACE(("%s\n", O2S(objResultPtr)));
+		    NEXT_INST_F(1, 2, 1);
+		}
+		TclSetLongObj(valuePtr, lResult);
+		TRACE(("%s\n", O2S(valuePtr)));
+		NEXT_INST_F(1, 1, 0);
+	    }
+	}
+
+	if ((sizeof(Tcl_WideInt) >= 2*sizeof(long)) && (*pc == INST_MULT)
+		&& (type1 == TCL_NUMBER_LONG) && (type2 == TCL_NUMBER_LONG)) {
+	    Tcl_WideInt w1, w2, wResult;
+	    TclGetWideIntFromObj(NULL, valuePtr, &w1);
+	    TclGetWideIntFromObj(NULL, value2Ptr, &w2);
+
+	    wResult = w1 * w2;
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if (Tcl_IsShared(valuePtr)) {
+		objResultPtr = Tcl_NewWideIntObj(wResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+	    Tcl_SetWideIntObj(valuePtr, wResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 0);
+	}
+
+	/* TODO: Attempts to re-use unshared operands on stack. */
+	if (*pc == INST_EXPON) {
+	    long l1 = 0, l2 = 0;
+	    int oddExponent = 0, negativeExponent = 0;
+#if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG)
+	    Tcl_WideInt w1;
+#endif
+
+	    if (type2 == TCL_NUMBER_LONG) {
+		l2 = *((const long *) ptr2);
+		if (l2 == 0) {
 		    /*
-		     * This code is tricky: C doesn't guarantee much
-		     * about the quotient or remainder, but Tcl does.
-		     * The remainder always has the same sign as the
-		     * divisor and a smaller absolute value.
+		     * Anything to the zero power is 1.
 		     */
-		    if (w2 == W0) {
-			TRACE((LLD" "LLD" => DIVIDE BY ZERO\n", w, w2));
-			goto divideByZero;
-		    }
-		    if (w2 < 0) {
-			w2 = -w2;
-			w = -w;
+
+		    objResultPtr = constants[1];
+		    NEXT_INST_F(1, 2, 1);
+		} else if (l2 == 1) {
+		    /*
+		     * Anything to the first power is itself
+		     */
+		    NEXT_INST_F(1, 1, 0);
+		}
+	    }
+
+	    switch (type2) {
+	    case TCL_NUMBER_LONG: {
+		negativeExponent = (l2 < 0);
+		oddExponent = (int) (l2 & 1);
+		break;
+	    }
+#ifndef NO_WIDE_TYPE
+	    case TCL_NUMBER_WIDE: {
+		Tcl_WideInt w2 = *((const Tcl_WideInt *)ptr2);
+
+		negativeExponent = (w2 < 0);
+		oddExponent = (int) (w2 & (Tcl_WideInt)1);
+		break;
+	    }
+#endif
+	    case TCL_NUMBER_BIG: {
+		mp_int big2;
+
+		Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+		negativeExponent = (mp_cmp_d(&big2, 0) == MP_LT);
+		mp_mod_2d(&big2, 1, &big2);
+		oddExponent = !mp_iszero(&big2);
+		mp_clear(&big2);
+		break;
+	    }
+	    }
+
+	    if (type1 == TCL_NUMBER_LONG) {
+		l1 = *((const long *)ptr1);
+	    }
+	    if (negativeExponent) {
+		if (type1 == TCL_NUMBER_LONG) {
+		    switch (l1) {
+		    case 0:
+			/*
+			 * Zero to a negative power is div by zero error.
+			 */
+
+			TRACE(("%s %s => EXPONENT OF ZERO\n", O2S(valuePtr),
+				O2S(value2Ptr)));
+			goto exponOfZero;
+		    case -1:
+			if (oddExponent) {
+			    TclNewIntObj(objResultPtr, -1);
+			} else {
+			    objResultPtr = constants[1];
+			}
+			NEXT_INST_F(1, 2, 1);
+		    case 1:
+			/*
+			 * 1 to any power is 1.
+			 */
+
+			objResultPtr = constants[1];
+			NEXT_INST_F(1, 2, 1);
 		    }
-		    wquot = w / w2;
-		    wrem  = w % w2;
-		    if (wrem < W0) {
-			wquot -= 1;
+		}
+
+		/*
+		 * Integers with magnitude greater than 1 raise to a negative
+		 * power yield the answer zero (see TIP 123).
+		 */
+
+		objResultPtr = constants[0];
+		NEXT_INST_F(1, 2, 1);
+	    }
+
+	    if (type1 == TCL_NUMBER_LONG) {
+		switch (l1) {
+		case 0:
+		    /*
+		     * Zero to a positive power is zero.
+		     */
+
+		    objResultPtr = constants[0];
+		    NEXT_INST_F(1, 2, 1);
+		case 1:
+		    /*
+		     * 1 to any power is 1.
+		     */
+
+		    objResultPtr = constants[1];
+		    NEXT_INST_F(1, 2, 1);
+		case -1:
+		    if (oddExponent) {
+			TclNewIntObj(objResultPtr, -1);
+		    } else {
+			objResultPtr = constants[1];
 		    }
-		    wResult = wquot;
-		    break;
+		    NEXT_INST_F(1, 2, 1);
+		}
 	    }
-	} else {
 	    /*
-		     * Do integer arithmetic.
+	     * We refuse to accept exponent arguments that exceed
+	     * one mp_digit which means the max exponent value is
+	     * 2**28-1 = 0x0fffffff = 268435455, which fits into 
+	     * a signed 32 bit int which is within the range of the
+	     * long int type.  This means any numeric Tcl_Obj value 
+	     * not using TCL_NUMBER_LONG type must hold a value larger
+	     * than we accept.
+	     */
+	    if (type2 != TCL_NUMBER_LONG) {
+		Tcl_SetObjResult(interp,
+			Tcl_NewStringObj("exponent too large", -1));
+		result = TCL_ERROR;
+		goto checkForCatch;
+	    }
+
+	    if (type1 == TCL_NUMBER_LONG) {
+		if (l1 == 2) {
+		    /*
+		     * Reduce small powers of 2 to shifts.
 		     */
-	    switch (*pc) {
-	        case INST_ADD:
-		    iResult = i + i2;
-		    break;
-	        case INST_SUB:
-		    iResult = i - i2;
-		    break;
-	        case INST_MULT:
-		    iResult = i * i2;
-		    break;
-	        case INST_DIV:
+
+		    if ((unsigned long) l2 < CHAR_BIT * sizeof(long) - 1) {
+			TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+			TclNewLongObj(objResultPtr, (1L << l2));
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+#if !defined(TCL_WIDE_INT_IS_LONG)
+		    if ((unsigned long)l2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1){
+			TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+			objResultPtr =
+				Tcl_NewWideIntObj(((Tcl_WideInt) 1) << l2);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+#endif
+		    goto overflow;
+		}
+		if (l1 == -2) {
+		    int signum = oddExponent ? -1 : 1;
+
 		    /*
-		     * This code is tricky: C doesn't guarantee much
-		     * about the quotient or remainder, but Tcl does.
-		     * The remainder always has the same sign as the
-		     * divisor and a smaller absolute value.
+		     * Reduce small powers of 2 to shifts.
 		     */
-		    if (i2 == 0) {
-			TRACE(("%ld %ld => DIVIDE BY ZERO\n", i, i2));
-			goto divideByZero;
+
+		    if ((unsigned long) l2 < CHAR_BIT * sizeof(long) - 1) {
+			TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+			TclNewLongObj(objResultPtr, signum * (1L << l2));
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
 		    }
-		    if (i2 < 0) {
-			i2 = -i2;
-			i = -i;
+#if !defined(TCL_WIDE_INT_IS_LONG)
+		    if ((unsigned long)l2 < CHAR_BIT*sizeof(Tcl_WideInt) - 1){
+			TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+			objResultPtr = Tcl_NewWideIntObj(
+				signum * (((Tcl_WideInt) 1) << l2));
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
 		    }
-		    quot = i / i2;
-		    rem  = i % i2;
-		    if (rem < 0) {
-			quot -= 1;
+#endif
+		    goto overflow;
+		}
+#if (LONG_MAX == 0x7fffffff)
+		if (l2 - 2 < (long)MaxBase32Size
+			&& l1 <=  MaxBase32[l2 - 2]
+			&& l1 >= -MaxBase32[l2 - 2]) {
+		    /*
+		     * Small powers of 32-bit integers.
+		     */
+
+		    long lResult = l1 * l1;	/* b**2 */
+		    switch (l2) {
+		    case 2:
+			break;
+		    case 3:
+			lResult *= l1;		/* b**3 */
+			break;
+		    case 4:
+			lResult *= lResult;	/* b**4 */
+			break;
+		    case 5:
+			lResult *= lResult;	/* b**4 */
+			lResult *= l1;		/* b**5 */
+			break;
+		    case 6:
+			lResult *= l1;		/* b**3 */
+			lResult *= lResult;	/* b**6 */
+			break;
+		    case 7:
+			lResult *= l1;		/* b**3 */
+			lResult *= lResult;	/* b**6 */
+			lResult *= l1;		/* b**7 */
+			break;
+		    case 8:
+			lResult *= lResult;	/* b**4 */
+			lResult *= lResult;	/* b**8 */
+			break;
 		    }
-		    iResult = quot;
-		    break;
-	    }
-	}
+		    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+		    if (Tcl_IsShared(valuePtr)) {
+			TclNewLongObj(objResultPtr, lResult);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+		    Tcl_SetLongObj(valuePtr, lResult);
+		    TRACE(("%s\n", O2S(valuePtr)));
+		    NEXT_INST_F(1, 1, 0);
+		}
+		if (l1 - 3 >= 0 && l1 - 2 < (long)Exp32IndexSize
+			&& l2 - 2 < (long)(Exp32ValueSize + MaxBase32Size)) {
 
-	/*
-	 * Reuse the valuePtr object already on stack if possible.
-	 */
-		
-	if (Tcl_IsShared(valuePtr)) {
-	    if (doDouble) {
-		objResultPtr = Tcl_NewDoubleObj(dResult);
-		TRACE(("%.6g %.6g => %.6g\n", d1, d2, dResult));
-	    } else if (doWide) {
-		objResultPtr = Tcl_NewWideIntObj(wResult);
-		TRACE((LLD" "LLD" => "LLD"\n", w, w2, wResult));
-	    } else {
-		objResultPtr = Tcl_NewLongObj(iResult);
-		TRACE(("%ld %ld => %ld\n", i, i2, iResult));
-	    } 
-	    NEXT_INST_F(1, 2, 1);
-	} else {	    /* reuse the valuePtr object */
-	    if (doDouble) { /* NB: stack top is off by 1 */
-		TRACE(("%.6g %.6g => %.6g\n", d1, d2, dResult));
-		Tcl_SetDoubleObj(valuePtr, dResult);
-	    } else if (doWide) {
-		TRACE((LLD" "LLD" => "LLD"\n", w, w2, wResult));
-		Tcl_SetWideIntObj(valuePtr, wResult);
-	    } else {
-		TRACE(("%ld %ld => %ld\n", i, i2, iResult));
-		Tcl_SetLongObj(valuePtr, iResult);
-	    }
-	    NEXT_INST_F(1, 1, 0);
-	}
-    }
+		    unsigned short base = Exp32Index[l1 - 3]
+			    + (unsigned short) (l2 - 2 - MaxBase32Size);
+		    if (base < Exp32Index[l1 - 2]) {
+			/*
+			 * 32-bit number raised to intermediate power, done by
+			 * table lookup.
+			 */
 
-    case INST_UPLUS:
-    {
-	/*
-	 * Operand must be numeric.
-	 */
+			TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+			if (Tcl_IsShared(valuePtr)) {
+			    TclNewLongObj(objResultPtr, Exp32Value[base]);
+			    TRACE(("%s\n", O2S(objResultPtr)));
+			    NEXT_INST_F(1, 2, 1);
+			}
+			Tcl_SetLongObj(valuePtr, Exp32Value[base]);
+			TRACE(("%s\n", O2S(valuePtr)));
+			NEXT_INST_F(1, 1, 0);
+		    }
+		}
+		if (-l1 - 3 >= 0 && -l1 - 2 < (long)Exp32IndexSize
+			&& l2 - 2 < (long)(Exp32ValueSize + MaxBase32Size)) {
+		    unsigned short base = Exp32Index[-l1 - 3]
+			    + (unsigned short) (l2 - 2 - MaxBase32Size);
+		    if (base < Exp32Index[-l1 - 2]) {
+			long lResult = (oddExponent) ?
+			    -Exp32Value[base] : Exp32Value[base];
 
-	double d;
-	Tcl_ObjType *tPtr;
-		
-	valuePtr = stackPtr[stackTop];
-	tPtr = valuePtr->typePtr;
-	if (!IS_INTEGER_TYPE(tPtr) && ((tPtr != &tclDoubleType) 
-                || (valuePtr->bytes != NULL))) {
-	    char *s = Tcl_GetStringFromObj(valuePtr, &length);
-	    if (TclLooksLikeInt(s, length)) {
-		GET_WIDE_OR_INT(result, valuePtr, i, w);
-	    } else {
-		result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, valuePtr, &d);
+			/*
+			 * 32-bit number raised to intermediate power, done by
+			 * table lookup.
+			 */
+
+			TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+			if (Tcl_IsShared(valuePtr)) {
+			    TclNewLongObj(objResultPtr, lResult);
+			    TRACE(("%s\n", O2S(objResultPtr)));
+			    NEXT_INST_F(1, 2, 1);
+			}
+			Tcl_SetLongObj(valuePtr, lResult);
+			TRACE(("%s\n", O2S(valuePtr)));
+			NEXT_INST_F(1, 1, 0);
+		    }
+		}
+#endif
 	    }
-	    if (result != TCL_OK) { 
-		TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n",
-		        s, (tPtr? tPtr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, valuePtr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
+#if (LONG_MAX > 0x7fffffff) || !defined(TCL_WIDE_INT_IS_LONG)
+	    if (type1 == TCL_NUMBER_LONG) {
+		w1 = l1;
+#ifndef NO_WIDE_TYPE
+	    } else if (type1 == TCL_NUMBER_WIDE) {
+		w1 = *((const Tcl_WideInt*) ptr1);
+#endif
+	    } else {
+		goto overflow;
 	    }
-	    tPtr = valuePtr->typePtr;
-	}
+	    if (l2 - 2 < (long)MaxBase64Size
+		    && w1 <=  MaxBase64[l2 - 2]
+		    && w1 >= -MaxBase64[l2 - 2]) {
+		/*
+		 * Small powers of integers whose result is wide.
+		 */
 
-	/*
-	 * Ensure that the operand's string rep is the same as the
-	 * formatted version of its internal rep. This makes sure
-	 * that "expr +000123" yields "83", not "000123". We
-	 * implement this by _discarding_ the string rep since we
-	 * know it will be regenerated, if needed later, by
-	 * formatting the internal rep's value.
-	 */
+		Tcl_WideInt wResult = w1 * w1; /* b**2 */
 
-	if (Tcl_IsShared(valuePtr)) {
-	    if (tPtr == &tclIntType) {
-		i = valuePtr->internalRep.longValue;
-		objResultPtr = Tcl_NewLongObj(i);
-	    } else if (tPtr == &tclWideIntType) {
-		TclGetWide(w,valuePtr);
-		objResultPtr = Tcl_NewWideIntObj(w);
-	    } else {
-		d = valuePtr->internalRep.doubleValue;
-		objResultPtr = Tcl_NewDoubleObj(d);
+		switch (l2) {
+		case 2:
+		    break;
+		case 3:
+		    wResult *= l1;	/* b**3 */
+		    break;
+		case 4:
+		    wResult *= wResult;	/* b**4 */
+		    break;
+		case 5:
+		    wResult *= wResult;	/* b**4 */
+		    wResult *= w1;	/* b**5 */
+		    break;
+		case 6:
+		    wResult *= w1;	/* b**3 */
+		    wResult *= wResult;	/* b**6 */
+		    break;
+		case 7:
+		    wResult *= w1;	/* b**3 */
+		    wResult *= wResult;	/* b**6 */
+		    wResult *= w1;	/* b**7 */
+		    break;
+		case 8:
+		    wResult *= wResult;	/* b**4 */
+		    wResult *= wResult;	/* b**8 */
+		    break;
+		case 9:
+		    wResult *= wResult;	/* b**4 */
+		    wResult *= wResult;	/* b**8 */
+		    wResult *= w1;	/* b**9 */
+		    break;
+		case 10:
+		    wResult *= wResult;	/* b**4 */
+		    wResult *= w1;	/* b**5 */
+		    wResult *= wResult;	/* b**10 */
+		    break;
+		case 11:
+		    wResult *= wResult;	/* b**4 */
+		    wResult *= w1;	/* b**5 */
+		    wResult *= wResult;	/* b**10 */
+		    wResult *= w1;	/* b**11 */
+		    break;
+		case 12:
+		    wResult *= w1;	/* b**3 */
+		    wResult *= wResult;	/* b**6 */
+		    wResult *= wResult;	/* b**12 */
+		    break;
+		case 13:
+		    wResult *= w1;	/* b**3 */
+		    wResult *= wResult;	/* b**6 */
+		    wResult *= wResult;	/* b**12 */
+		    wResult *= w1;	/* b**13 */
+		    break;
+		case 14:
+		    wResult *= w1;	/* b**3 */
+		    wResult *= wResult;	/* b**6 */
+		    wResult *= w1;	/* b**7 */
+		    wResult *= wResult;	/* b**14 */
+		    break;
+		case 15:
+		    wResult *= w1;	/* b**3 */
+		    wResult *= wResult;	/* b**6 */
+		    wResult *= w1;	/* b**7 */
+		    wResult *= wResult;	/* b**14 */
+		    wResult *= w1;	/* b**15 */
+		    break;
+		case 16:
+		    wResult *= wResult;	/* b**4 */
+		    wResult *= wResult;	/* b**8 */
+		    wResult *= wResult;	/* b**16 */
+		    break;
+
+		}
+		TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+		objResultPtr = Tcl_NewWideIntObj(wResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
 	    }
-	    TRACE_WITH_OBJ(("%s => ", O2S(objResultPtr)), objResultPtr);
-	    NEXT_INST_F(1, 1, 1);
-	} else {
-	    Tcl_InvalidateStringRep(valuePtr);
-	    TRACE_WITH_OBJ(("%s => ", O2S(valuePtr)), valuePtr);
-	    NEXT_INST_F(1, 0, 0);
-	}
-    }
-	    
-    case INST_UMINUS:
-    case INST_LNOT:
-    {
-	/*
-	 * The operand must be numeric or a boolean string as
-	 * accepted by Tcl_GetBooleanFromObj(). If the operand
-	 * object is unshared modify it directly, otherwise
-	 * create a copy to modify: this is "copy on write".
-	 * Free any old string representation since it is now
-	 * invalid.
-	 */
 
-	double d;
-	int boolvar;
-	Tcl_ObjType *tPtr;
+	    /*
+	     * Handle cases of powers > 16 that still fit in a 64-bit word by
+	     * doing table lookup.
+	     */
+	    if (w1 - 3 >= 0 && w1 - 2 < (long)Exp64IndexSize
+		    && l2 - 2 < (long)(Exp64ValueSize + MaxBase64Size)) {
+		unsigned short base = Exp64Index[w1 - 3]
+			+ (unsigned short) (l2 - 2 - MaxBase64Size);
 
-	valuePtr = stackPtr[stackTop];
-	tPtr = valuePtr->typePtr;
-	if (!IS_INTEGER_TYPE(tPtr) && ((tPtr != &tclDoubleType)
-	        || (valuePtr->bytes != NULL))) {
-	    if ((tPtr == &tclBooleanType) && (valuePtr->bytes == NULL)) {
-		valuePtr->typePtr = &tclIntType;
-	    } else {
-		char *s = Tcl_GetStringFromObj(valuePtr, &length);
-		if (TclLooksLikeInt(s, length)) {
-		    GET_WIDE_OR_INT(result, valuePtr, i, w);
-		} else {
-		    result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
-		            valuePtr, &d);
-		}
-		if (result == TCL_ERROR && *pc == INST_LNOT) {
-		    result = Tcl_GetBooleanFromObj((Tcl_Interp *)NULL,
-		            valuePtr, &boolvar);
-		    i = (long)boolvar; /* i is long, not int! */
+		if (base < Exp64Index[w1 - 2]) {
+		    /*
+		     * 64-bit number raised to intermediate power, done by
+		     * table lookup.
+		     */
+
+		    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+		    if (Tcl_IsShared(valuePtr)) {
+			objResultPtr = Tcl_NewWideIntObj(Exp64Value[base]);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+		    Tcl_SetWideIntObj(valuePtr, Exp64Value[base]);
+		    TRACE(("%s\n", O2S(valuePtr)));
+		    NEXT_INST_F(1, 1, 0);
 		}
-		if (result != TCL_OK) {
-		    TRACE(("\"%.20s\" => ILLEGAL TYPE %s\n",
-		            s, (tPtr? tPtr->name : "null")));
-		    DECACHE_STACK_INFO();
-		    IllegalExprOperandType(interp, pc, valuePtr);
-		    CACHE_STACK_INFO();
-		    goto checkForCatch;
+	    }
+
+	    if (-w1 - 3 >= 0 && -w1 - 2 < (long)Exp64IndexSize
+		    && l2 - 2 < (long)(Exp64ValueSize + MaxBase64Size)) {
+		unsigned short base = Exp64Index[-w1 - 3]
+			+ (unsigned short) (l2 - 2 - MaxBase64Size);
+
+		if (base < Exp64Index[-w1 - 2]) {
+		    Tcl_WideInt wResult = (oddExponent) ?
+			    -Exp64Value[base] : Exp64Value[base];
+		    /*
+		     * 64-bit number raised to intermediate power, done by
+		     * table lookup.
+		     */
+
+		    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+		    if (Tcl_IsShared(valuePtr)) {
+			objResultPtr = Tcl_NewWideIntObj(wResult);
+			TRACE(("%s\n", O2S(objResultPtr)));
+			NEXT_INST_F(1, 2, 1);
+		    }
+		    Tcl_SetWideIntObj(valuePtr, wResult);
+		    TRACE(("%s\n", O2S(valuePtr)));
+		    NEXT_INST_F(1, 1, 0);
 		}
 	    }
-	    tPtr = valuePtr->typePtr;
+#endif
+
+	    goto overflow;
 	}
 
-	if (Tcl_IsShared(valuePtr)) {
-	    /*
-	     * Create a new object.
-	     */
-	    if ((tPtr == &tclIntType) || (tPtr == &tclBooleanType)) {
-		i = valuePtr->internalRep.longValue;
-		objResultPtr = Tcl_NewLongObj(
-		    (*pc == INST_UMINUS)? -i : !i);
-		TRACE_WITH_OBJ(("%ld => ", i), objResultPtr);
-	    } else if (tPtr == &tclWideIntType) {
-		TclGetWide(w,valuePtr);
-		if (*pc == INST_UMINUS) {
-		    objResultPtr = Tcl_NewWideIntObj(-w);
-		} else {
-		    objResultPtr = Tcl_NewLongObj(w == W0);
+	if ((*pc != INST_MULT)
+		&& (type1 != TCL_NUMBER_BIG) && (type2 != TCL_NUMBER_BIG)) {
+	    Tcl_WideInt w1, w2, wResult;
+
+	    TclGetWideIntFromObj(NULL, valuePtr, &w1);
+	    TclGetWideIntFromObj(NULL, value2Ptr, &w2);
+
+	    switch (*pc) {
+	    case INST_ADD:
+		wResult = w1 + w2;
+#ifndef NO_WIDE_TYPE
+		if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE))
+#endif
+		{
+		    /*
+		     * Check for overflow.
+		     */
+
+		    if (Overflowing(w1, w2, wResult)) {
+			goto overflow;
+		    }
 		}
-		TRACE_WITH_OBJ((LLD" => ", w), objResultPtr);
-	    } else {
-		d = valuePtr->internalRep.doubleValue;
-		if (*pc == INST_UMINUS) {
-		    objResultPtr = Tcl_NewDoubleObj(-d);
-		} else {
+		break;
+
+	    case INST_SUB:
+		wResult = w1 - w2;
+#ifndef NO_WIDE_TYPE
+		if ((type1 == TCL_NUMBER_WIDE) || (type2 == TCL_NUMBER_WIDE))
+#endif
+		{
 		    /*
-		     * Should be able to use "!d", but apparently
-		     * some compilers can't handle it.
+		     * Must check for overflow. The macro tests for overflows
+		     * in sums by looking at the sign bits. As we have a
+		     * subtraction here, we are adding -w2. As -w2 could in
+		     * turn overflow, we test with ~w2 instead: it has the
+		     * opposite sign bit to w2 so it does the job. Note that
+		     * the only "bad" case (w2==0) is irrelevant for this
+		     * macro, as in that case w1 and wResult have the same
+		     * sign and there is no overflow anyway.
 		     */
-		    objResultPtr = Tcl_NewLongObj((d==0.0)? 1 : 0);
+
+		    if (Overflowing(w1, ~w2, wResult)) {
+			goto overflow;
+		    }
+		}
+		break;
+
+	    case INST_DIV:
+		if (w2 == 0) {
+		    TRACE(("%s %s => DIVIDE BY ZERO\n",
+			    O2S(valuePtr), O2S(value2Ptr)));
+		    goto divideByZero;
 		}
-		TRACE_WITH_OBJ(("%.6g => ", d), objResultPtr);
+
+		/*
+		 * Need a bignum to represent (LLONG_MIN / -1)
+		 */
+
+		if ((w1 == LLONG_MIN) && (w2 == -1)) {
+		    goto overflow;
+		}
+		wResult = w1 / w2;
+
+		/*
+		 * Force Tcl's integer division rules.
+		 * TODO: examine for logic simplification
+		 */
+
+		if (((wResult < 0) || ((wResult == 0) &&
+			((w1 < 0 && w2 > 0) || (w1 > 0 && w2 < 0)))) &&
+			((wResult * w2) != w1)) {
+		    wResult -= 1;
+		}
+		break;
+	    default:
+		/*
+		 * Unused, here to silence compiler warning.
+		 */
+
+		wResult = 0;
 	    }
-	    NEXT_INST_F(1, 1, 1);
-	} else {
-	    /*
-	     * valuePtr is unshared. Modify it directly.
-	     */
-	    if ((tPtr == &tclIntType) || (tPtr == &tclBooleanType)) {
-		i = valuePtr->internalRep.longValue;
-		Tcl_SetLongObj(valuePtr,
-	                (*pc == INST_UMINUS)? -i : !i);
-		TRACE_WITH_OBJ(("%ld => ", i), valuePtr);
-	    } else if (tPtr == &tclWideIntType) {
-		TclGetWide(w,valuePtr);
-		if (*pc == INST_UMINUS) {
-		    Tcl_SetWideIntObj(valuePtr, -w);
-		} else {
-		    Tcl_SetLongObj(valuePtr, w == W0);
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    if (Tcl_IsShared(valuePtr)) {
+		objResultPtr = Tcl_NewWideIntObj(wResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+	    Tcl_SetWideIntObj(valuePtr, wResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 0);
+	}
+
+    overflow:
+	{
+	    mp_int big1, big2, bigResult, bigRemainder;
+
+	    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
+	    Tcl_TakeBignumFromObj(NULL, valuePtr, &big1);
+	    Tcl_TakeBignumFromObj(NULL, value2Ptr, &big2);
+	    mp_init(&bigResult);
+	    switch (*pc) {
+	    case INST_ADD:
+		mp_add(&big1, &big2, &bigResult);
+		break;
+	    case INST_SUB:
+		mp_sub(&big1, &big2, &bigResult);
+		break;
+	    case INST_MULT:
+		mp_mul(&big1, &big2, &bigResult);
+		break;
+	    case INST_DIV:
+		if (mp_iszero(&big2)) {
+		    TRACE(("%s %s => DIVIDE BY ZERO\n", O2S(valuePtr),
+			    O2S(value2Ptr)));
+		    mp_clear(&big1);
+		    mp_clear(&big2);
+		    mp_clear(&bigResult);
+		    goto divideByZero;
 		}
-		TRACE_WITH_OBJ((LLD" => ", w), valuePtr);
-	    } else {
-		d = valuePtr->internalRep.doubleValue;
-		if (*pc == INST_UMINUS) {
-		    Tcl_SetDoubleObj(valuePtr, -d);
-		} else {
+		mp_init(&bigRemainder);
+		mp_div(&big1, &big2, &bigResult, &bigRemainder);
+		/* TODO: internals intrusion */
+		if (!mp_iszero(&bigRemainder)
+			&& (bigRemainder.sign != big2.sign)) {
 		    /*
-		     * Should be able to use "!d", but apparently
-		     * some compilers can't handle it.
+		     * Convert to Tcl's integer division rules.
 		     */
-		    Tcl_SetLongObj(valuePtr, (d==0.0)? 1 : 0);
+
+		    mp_sub_d(&bigResult, 1, &bigResult);
+		    mp_add(&bigRemainder, &big2, &bigRemainder);
 		}
-		TRACE_WITH_OBJ(("%.6g => ", d), valuePtr);
+		mp_clear(&bigRemainder);
+		break;
+	    case INST_EXPON:
+		if (big2.used > 1) {
+		    Tcl_SetObjResult(interp,
+			    Tcl_NewStringObj("exponent too large", -1));
+		    mp_clear(&big1);
+		    mp_clear(&big2);
+		    mp_clear(&bigResult);
+		    result = TCL_ERROR;
+		    goto checkForCatch;
+		}
+		mp_expt_d(&big1, big2.dp[0], &bigResult);
+		break;
 	    }
-	    NEXT_INST_F(1, 0, 0);
+	    mp_clear(&big1);
+	    mp_clear(&big2);
+	    if (Tcl_IsShared(valuePtr)) {
+		objResultPtr = Tcl_NewBignumObj(&bigResult);
+		TRACE(("%s\n", O2S(objResultPtr)));
+		NEXT_INST_F(1, 2, 1);
+	    }
+	    Tcl_SetBignumObj(valuePtr, &bigResult);
+	    TRACE(("%s\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 0);
 	}
     }
 
-    case INST_BITNOT:
-    {
-	/*
-	 * The operand must be an integer. If the operand object is
-	 * unshared modify it directly, otherwise modify a copy. 
-	 * Free any old string representation since it is now
-	 * invalid.
-	 */
-		
-	Tcl_ObjType *tPtr;
-		
-	valuePtr = stackPtr[stackTop];
-	tPtr = valuePtr->typePtr;
-	if (!IS_INTEGER_TYPE(tPtr)) {
-	    REQUIRE_WIDE_OR_INT(result, valuePtr, i, w);
-	    if (result != TCL_OK) {   /* try to convert to double */
-		TRACE(("\"%.20s\" => ILLEGAL TYPE %s\n",
-		        O2S(valuePtr), (tPtr? tPtr->name : "null")));
-		DECACHE_STACK_INFO();
-		IllegalExprOperandType(interp, pc, valuePtr);
-		CACHE_STACK_INFO();
-		goto checkForCatch;
-	    }
+    case INST_LNOT: {
+	int b;
+	Tcl_Obj *valuePtr = OBJ_AT_TOS;
+
+	/* TODO - check claim that taking address of b harms performance */
+	/* TODO - consider optimization search for constants */
+	result = TclGetBooleanFromObj(NULL, valuePtr, &b);
+	if (result != TCL_OK) {
+	    TRACE(("\"%.20s\" => ILLEGAL TYPE %s\n", O2S(valuePtr),
+		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, valuePtr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
 	}
-		
-	if (valuePtr->typePtr == &tclWideIntType) {
-	    TclGetWide(w,valuePtr);
+	/* TODO: Consider peephole opt. */
+	objResultPtr = constants[!b];
+	NEXT_INST_F(1, 1, 1);
+    }
+
+    case INST_BITNOT: {
+	mp_int big;
+	ClientData ptr;
+	int type;
+	Tcl_Obj *valuePtr = OBJ_AT_TOS;
+
+	result = GetNumberFromObj(NULL, valuePtr, &ptr, &type);
+	if ((result != TCL_OK)
+		|| (type == TCL_NUMBER_NAN) || (type == TCL_NUMBER_DOUBLE)) {
+	    /*
+	     * ... ~$NonInteger => raise an error.
+	     */
+
+	    result = TCL_ERROR;
+	    TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
+		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
+	    DECACHE_STACK_INFO();
+	    IllegalExprOperandType(interp, pc, valuePtr);
+	    CACHE_STACK_INFO();
+	    goto checkForCatch;
+	}
+	if (type == TCL_NUMBER_LONG) {
+	    long l = *((const long *)ptr);
+
 	    if (Tcl_IsShared(valuePtr)) {
-		objResultPtr = Tcl_NewWideIntObj(~w);
-		TRACE(("0x%" TCL_LL_MODIFIER "x => (%" TCL_LL_MODIFIER "u)\n",
-			w, ~w));
+		TclNewLongObj(objResultPtr, ~l);
 		NEXT_INST_F(1, 1, 1);
-	    } else {
-		/*
-		 * valuePtr is unshared. Modify it directly.
-		 */
-		Tcl_SetWideIntObj(valuePtr, ~w);
-		TRACE(("0x%" TCL_LL_MODIFIER "x => (%" TCL_LL_MODIFIER "u)\n",
-			w, ~w));
-		NEXT_INST_F(1, 0, 0);
 	    }
-	} else {
-	    i = valuePtr->internalRep.longValue;
+	    TclSetLongObj(valuePtr, ~l);
+	    NEXT_INST_F(1, 0, 0);
+	}
+#ifndef NO_WIDE_TYPE
+	if (type == TCL_NUMBER_WIDE) {
+	    Tcl_WideInt w = *((const Tcl_WideInt *)ptr);
+
 	    if (Tcl_IsShared(valuePtr)) {
-		objResultPtr = Tcl_NewLongObj(~i);
-		TRACE(("0x%lx => (%lu)\n", i, ~i));
+		objResultPtr = Tcl_NewWideIntObj(~w);
 		NEXT_INST_F(1, 1, 1);
-	    } else {
-		/*
-		 * valuePtr is unshared. Modify it directly.
-		 */
-		Tcl_SetLongObj(valuePtr, ~i);
-		TRACE(("0x%lx => (%lu)\n", i, ~i));
-		NEXT_INST_F(1, 0, 0);
 	    }
+	    Tcl_SetWideIntObj(valuePtr, ~w);
+	    NEXT_INST_F(1, 0, 0);
 	}
+#endif
+	Tcl_TakeBignumFromObj(NULL, valuePtr, &big);
+	/* ~a = - a - 1 */
+	mp_neg(&big, &big);
+	mp_sub_d(&big, 1, &big);
+	if (Tcl_IsShared(valuePtr)) {
+	    objResultPtr = Tcl_NewBignumObj(&big);
+	    NEXT_INST_F(1, 1, 1);
+	}
+	Tcl_SetBignumObj(valuePtr, &big);
+	NEXT_INST_F(1, 0, 0);
     }
 
-    case INST_CALL_BUILTIN_FUNC1:
-	opnd = TclGetUInt1AtPtr(pc+1);
-	{
-	    /*
-	     * Call one of the built-in Tcl math functions.
-	     */
+    case INST_UMINUS: {
+	ClientData ptr;
+	int type;
+	Tcl_Obj *valuePtr = OBJ_AT_TOS;
 
-	    BuiltinFunc *mathFuncPtr;
-
-	    if ((opnd < 0) || (opnd > LAST_BUILTIN_FUNC)) {
-		TRACE(("UNRECOGNIZED BUILTIN FUNC CODE %d\n", opnd));
-		panic("TclExecuteByteCode: unrecognized builtin function code %d", opnd);
-	    }
-	    mathFuncPtr = &(tclBuiltinFuncTable[opnd]);
+	result = GetNumberFromObj(NULL, valuePtr, &ptr, &type);
+	if ((result != TCL_OK)
+#ifndef ACCEPT_NAN
+		|| (type == TCL_NUMBER_NAN)
+#endif
+		) {
+	    result = TCL_ERROR;
+	    TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
+		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
 	    DECACHE_STACK_INFO();
-	    result = (*mathFuncPtr->proc)(interp, eePtr,
-	            mathFuncPtr->clientData);
+	    IllegalExprOperandType(interp, pc, valuePtr);
 	    CACHE_STACK_INFO();
-	    if (result != TCL_OK) {
-		goto checkForCatch;
+	    goto checkForCatch;
+	}
+	switch (type) {
+	case TCL_NUMBER_DOUBLE: {
+	    double d;
+
+	    if (Tcl_IsShared(valuePtr)) {
+		TclNewDoubleObj(objResultPtr, -(*((const double *)ptr)));
+		NEXT_INST_F(1, 1, 1);
 	    }
-	    TRACE_WITH_OBJ(("%d => ", opnd), stackPtr[stackTop]);
+	    d = *((const double *)ptr);
+	    TclSetDoubleObj(valuePtr, -d);
+	    NEXT_INST_F(1, 0, 0);
 	}
-	NEXT_INST_F(2, 0, 0);
-		    
-    case INST_CALL_FUNC1:
-	opnd = TclGetUInt1AtPtr(pc+1);
-	{
-	    /*
-	     * Call a non-builtin Tcl math function previously
-	     * registered by a call to Tcl_CreateMathFunc.
-	     */
-		
-	    int objc = opnd;   /* Number of arguments. The function name
-				* is the 0-th argument. */
-	    Tcl_Obj **objv;    /* The array of arguments. The function
-				* name is objv[0]. */
+	case TCL_NUMBER_LONG: {
+	    long l = *((const long *)ptr);
 
-	    objv = &(stackPtr[stackTop - (objc-1)]); /* "objv[0]" */
-	    DECACHE_STACK_INFO();
-	    result = ExprCallMathFunc(interp, eePtr, objc, objv);
-	    CACHE_STACK_INFO();
-	    if (result != TCL_OK) {
-		goto checkForCatch;
+	    if (l != LONG_MIN) {
+		if (Tcl_IsShared(valuePtr)) {
+		    TclNewLongObj(objResultPtr, -l);
+		    NEXT_INST_F(1, 1, 1);
+		}
+		TclSetLongObj(valuePtr, -l);
+		NEXT_INST_F(1, 0, 0);
 	    }
-	    TRACE_WITH_OBJ(("%d => ", objc), stackPtr[stackTop]);
+	    /* FALLTHROUGH */
 	}
-	NEXT_INST_F(2, 0, 0);
+#ifndef NO_WIDE_TYPE
+	case TCL_NUMBER_WIDE: {
+	    Tcl_WideInt w;
 
-    case INST_TRY_CVT_TO_NUMERIC:
-    {
-	/*
-	 * Try to convert the topmost stack object to an int or
-	 * double object. This is done in order to support Tcl's
-	 * policy of interpreting operands if at all possible as
-	 * first integers, else floating-point numbers.
-	 */
-		
-	double d;
-	char *s;
-	Tcl_ObjType *tPtr;
-	int converted, needNew;
-
-	valuePtr = stackPtr[stackTop];
-	tPtr = valuePtr->typePtr;
-	converted = 0;
-	if (!IS_INTEGER_TYPE(tPtr) && ((tPtr != &tclDoubleType)
-	        || (valuePtr->bytes != NULL))) {
-	    if ((tPtr == &tclBooleanType) && (valuePtr->bytes == NULL)) {
-		valuePtr->typePtr = &tclIntType;
-		converted = 1;
+	    if (type == TCL_NUMBER_LONG) {
+		w = (Tcl_WideInt)(*((const long *)ptr));
 	    } else {
-		s = Tcl_GetStringFromObj(valuePtr, &length);
-		if (TclLooksLikeInt(s, length)) {
-		    GET_WIDE_OR_INT(result, valuePtr, i, w);
-		} else {
-		    result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL,
-		            valuePtr, &d);
-		}
-		if (result == TCL_OK) {
-		    converted = 1;
+		w = *((const Tcl_WideInt *)ptr);
+	    }
+	    if (w != LLONG_MIN) {
+		if (Tcl_IsShared(valuePtr)) {
+		    objResultPtr = Tcl_NewWideIntObj(-w);
+		    NEXT_INST_F(1, 1, 1);
 		}
-		result = TCL_OK; /* reset the result variable */
+		Tcl_SetWideIntObj(valuePtr, -w);
+		NEXT_INST_F(1, 0, 0);
+	    }
+	    /* FALLTHROUGH */
+	}
+#endif
+	case TCL_NUMBER_BIG: {
+	    mp_int big;
+
+	    switch (type) {
+#ifdef NO_WIDE_TYPE
+	    case TCL_NUMBER_LONG:
+		TclBNInitBignumFromLong(&big, *(const long *) ptr);
+		break;
+#else
+	    case TCL_NUMBER_WIDE:
+		TclBNInitBignumFromWideInt(&big, *(const Tcl_WideInt *) ptr);
+		break;
+#endif
+	    case TCL_NUMBER_BIG:
+		Tcl_TakeBignumFromObj(NULL, valuePtr, &big);
 	    }
-	    tPtr = valuePtr->typePtr;
+	    mp_neg(&big, &big);
+	    if (Tcl_IsShared(valuePtr)) {
+		objResultPtr = Tcl_NewBignumObj(&big);
+		NEXT_INST_F(1, 1, 1);
+	    }
+	    Tcl_SetBignumObj(valuePtr, &big);
+	    NEXT_INST_F(1, 0, 0);
 	}
+	case TCL_NUMBER_NAN:
+	    /* -NaN => NaN */
+	    NEXT_INST_F(1, 0, 0);
+	}
+    }
 
+    case INST_UPLUS:
+    case INST_TRY_CVT_TO_NUMERIC: {
 	/*
-	 * Ensure that the topmost stack object, if numeric, has a
-	 * string rep the same as the formatted version of its
-	 * internal rep. This is used, e.g., to make sure that "expr
-	 * {0001}" yields "1", not "0001". We implement this by
-	 * _discarding_ the string rep since we know it will be
-	 * regenerated, if needed later, by formatting the internal
-	 * rep's value. Also check if there has been an IEEE
-	 * floating point error.
+	 * Try to convert the topmost stack object to numeric object. This is
+	 * done in order to support [expr]'s policy of interpreting operands
+	 * if at all possible as numbers first, then strings.
 	 */
-	
-	objResultPtr = valuePtr;
-	needNew = 0;
-	if (IS_NUMERIC_TYPE(tPtr)) {
-	    if (Tcl_IsShared(valuePtr)) {
-		if (valuePtr->bytes != NULL) {
-		    /*
-		     * We only need to make a copy of the object
-		     * when it already had a string rep
-		     */
-		    needNew = 1;
-		    if (tPtr == &tclIntType) {
-			i = valuePtr->internalRep.longValue;
-			objResultPtr = Tcl_NewLongObj(i);
-		    } else if (tPtr == &tclWideIntType) {
-			TclGetWide(w,valuePtr);
-			objResultPtr = Tcl_NewWideIntObj(w);
-		    } else {
-			d = valuePtr->internalRep.doubleValue;
-			objResultPtr = Tcl_NewDoubleObj(d);
-		    }
-		    tPtr = objResultPtr->typePtr;
-		}
+
+	ClientData ptr;
+	int type;
+	Tcl_Obj *valuePtr = OBJ_AT_TOS;
+
+	if (GetNumberFromObj(NULL, valuePtr, &ptr, &type) != TCL_OK) {
+	    if (*pc == INST_UPLUS) {
+		/*
+		 * ... +$NonNumeric => raise an error.
+		 */
+
+		result = TCL_ERROR;
+		TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
+			(valuePtr->typePtr? valuePtr->typePtr->name:"null")));
+		DECACHE_STACK_INFO();
+		IllegalExprOperandType(interp, pc, valuePtr);
+		CACHE_STACK_INFO();
+		goto checkForCatch;
 	    } else {
-		Tcl_InvalidateStringRep(valuePtr);
+		/* ... TryConvertToNumeric($NonNumeric) is acceptable */
+		TRACE(("\"%.20s\" => not numeric\n", O2S(valuePtr)));
+		NEXT_INST_F(1, 0, 0);
 	    }
-		
-	    if (tPtr == &tclDoubleType) {
-		d = objResultPtr->internalRep.doubleValue;
-		if (IS_NAN(d) || IS_INF(d)) {
-		    TRACE(("\"%.20s\" => IEEE FLOATING PT ERROR\n",
-		            O2S(objResultPtr)));
-		    DECACHE_STACK_INFO();
-		    TclExprFloatError(interp, d);
-		    CACHE_STACK_INFO();
-		    result = TCL_ERROR;
-		    goto checkForCatch;
-		}
+	}
+#ifndef ACCEPT_NAN
+	if (type == TCL_NUMBER_NAN) {
+	    result = TCL_ERROR;
+	    if (*pc == INST_UPLUS) {
+		/*
+		 * ... +$NonNumeric => raise an error.
+		 */
+
+		TRACE(("\"%.20s\" => ILLEGAL TYPE %s \n", O2S(valuePtr),
+			(valuePtr->typePtr? valuePtr->typePtr->name:"null")));
+		DECACHE_STACK_INFO();
+		IllegalExprOperandType(interp, pc, valuePtr);
+		CACHE_STACK_INFO();
+	    } else {
+		/*
+		 * Numeric conversion of NaN -> error.
+		 */
+
+		TRACE(("\"%.20s\" => IEEE FLOATING PT ERROR\n",
+			O2S(objResultPtr)));
+		DECACHE_STACK_INFO();
+		TclExprFloatError(interp, *((const double *)ptr));
+		CACHE_STACK_INFO();
 	    }
-	    converted = converted;  /* lint, converted not used. */
-	    TRACE(("\"%.20s\" => numeric, %s, %s\n", O2S(valuePtr),
-	            (converted? "converted" : "not converted"),
-		    (needNew? "new Tcl_Obj" : "same Tcl_Obj")));
-	} else {
-	    TRACE(("\"%.20s\" => not numeric\n", O2S(valuePtr)));
+	    goto checkForCatch;
 	}
-	if (needNew) {
-	    NEXT_INST_F(1, 1, 1);
-	} else {
+#endif
+
+	/*
+	 * Ensure that the numeric value has a string rep the same as the
+	 * formatted version of its internal rep. This is used, e.g., to make
+	 * sure that "expr {0001}" yields "1", not "0001". We implement this
+	 * by _discarding_ the string rep since we know it will be
+	 * regenerated, if needed later, by formatting the internal rep's
+	 * value.
+	 */
+
+	if (valuePtr->bytes == NULL) {
+	    TRACE(("\"%.20s\" => numeric, same Tcl_Obj\n", O2S(valuePtr)));
 	    NEXT_INST_F(1, 0, 0);
 	}
+	if (Tcl_IsShared(valuePtr)) {
+	    /*
+	     * Here we do some surgery within the Tcl_Obj internals. We want
+	     * to copy the intrep, but not the string, so we temporarily hide
+	     * the string so we do not copy it.
+	     */
+
+	    char *savedString = valuePtr->bytes;
+
+	    valuePtr->bytes = NULL;
+	    objResultPtr = Tcl_DuplicateObj(valuePtr);
+	    valuePtr->bytes = savedString;
+	    TRACE(("\"%.20s\" => numeric, new Tcl_Obj\n", O2S(valuePtr)));
+	    NEXT_INST_F(1, 1, 1);
+	}
+	TclInvalidateStringRep(valuePtr);
+	TRACE(("\"%.20s\" => numeric, same Tcl_Obj\n", O2S(valuePtr)));
+	NEXT_INST_F(1, 0, 0);
     }
-	
+
     case INST_BREAK:
+	/*
 	DECACHE_STACK_INFO();
 	Tcl_ResetResult(interp);
 	CACHE_STACK_INFO();
+	*/
 	result = TCL_BREAK;
 	cleanup = 0;
 	goto processExceptionReturn;
 
     case INST_CONTINUE:
+	/*
 	DECACHE_STACK_INFO();
 	Tcl_ResetResult(interp);
 	CACHE_STACK_INFO();
+	*/
 	result = TCL_CONTINUE;
 	cleanup = 0;
 	goto processExceptionReturn;
 
-    case INST_FOREACH_START4:
-	opnd = TclGetUInt4AtPtr(pc+1);
-	{
-	    /*
-	     * Initialize the temporary local var that holds the count
-	     * of the number of iterations of the loop body to -1.
-	     */
+    case INST_FOREACH_START4: {
+	/*
+	 * Initialize the temporary local var that holds the count of the
+	 * number of iterations of the loop body to -1.
+	 */
 
-	    ForeachInfo *infoPtr = (ForeachInfo *)
-	            codePtr->auxDataArrayPtr[opnd].clientData;
-	    int iterTmpIndex = infoPtr->loopCtTemp;
-	    Var *compiledLocals = iPtr->varFramePtr->compiledLocals;
-	    Var *iterVarPtr = &(compiledLocals[iterTmpIndex]);
-	    Tcl_Obj *oldValuePtr = iterVarPtr->value.objPtr;
+	int opnd, iterTmpIndex;
+	ForeachInfo *infoPtr;
+	Var *iterVarPtr;
+	Tcl_Obj *oldValuePtr;
 
-	    if (oldValuePtr == NULL) {
-		iterVarPtr->value.objPtr = Tcl_NewLongObj(-1);
-		Tcl_IncrRefCount(iterVarPtr->value.objPtr);
-	    } else {
-		Tcl_SetLongObj(oldValuePtr, -1);
-	    }
-	    TclSetVarScalar(iterVarPtr);
-	    TclClearVarUndefined(iterVarPtr);
-	    TRACE(("%u => loop iter count temp %d\n", 
-		   opnd, iterTmpIndex));
+	opnd = TclGetUInt4AtPtr(pc+1);
+	infoPtr = (ForeachInfo *) codePtr->auxDataArrayPtr[opnd].clientData;
+	iterTmpIndex = infoPtr->loopCtTemp;
+	iterVarPtr = &(compiledLocals[iterTmpIndex]);
+	oldValuePtr = iterVarPtr->value.objPtr;
+
+	if (oldValuePtr == NULL) {
+	    TclNewLongObj(iterVarPtr->value.objPtr, -1);
+	    Tcl_IncrRefCount(iterVarPtr->value.objPtr);
+	} else {
+	    TclSetLongObj(oldValuePtr, -1);
 	}
-	    
+	TRACE(("%u => loop iter count temp %d\n", opnd, iterTmpIndex));
+
 #ifndef TCL_COMPILE_DEBUG
-	/* 
-	 * Remark that the compiler ALWAYS sets INST_FOREACH_STEP4
-	 * immediately after INST_FOREACH_START4 - let us just fall
-	 * through instead of jumping back to the top.
+	/*
+	 * Remark that the compiler ALWAYS sets INST_FOREACH_STEP4 immediately
+	 * after INST_FOREACH_START4 - let us just fall through instead of
+	 * jumping back to the top.
 	 */
 
 	pc += 5;
 	TCL_DTRACE_INST_NEXT();
 #else
 	NEXT_INST_F(5, 0, 0);
-#endif	
-    case INST_FOREACH_STEP4:
+#endif
+    }
+
+    case INST_FOREACH_STEP4: {
+	/*
+	 * "Step" a foreach loop (i.e., begin its next iteration) by assigning
+	 * the next value list element to each loop var.
+	 */
+
+	ForeachInfo *infoPtr;
+	ForeachVarList *varListPtr;
+	Tcl_Obj *listPtr,*valuePtr, *value2Ptr, **elements;
+	Var *iterVarPtr, *listVarPtr, *varPtr;
+	int opnd, numLists, iterNum, listTmpIndex, listLen, numVars;
+	int varIndex, valIndex, continueLoop, j;
+	long i;
+
 	opnd = TclGetUInt4AtPtr(pc+1);
-	{
-	    /*
-	     * "Step" a foreach loop (i.e., begin its next iteration) by
-	     * assigning the next value list element to each loop var.
-	     */
+	infoPtr = (ForeachInfo *) codePtr->auxDataArrayPtr[opnd].clientData;
+	numLists = infoPtr->numLists;
 
-	    ForeachInfo *infoPtr = (ForeachInfo *)
-	            codePtr->auxDataArrayPtr[opnd].clientData;
-	    ForeachVarList *varListPtr;
-	    int numLists = infoPtr->numLists;
-	    Var *compiledLocals = iPtr->varFramePtr->compiledLocals;
-	    Tcl_Obj *listPtr;
-	    Var *iterVarPtr, *listVarPtr;
-	    int iterNum, listTmpIndex, listLen, numVars;
-	    int varIndex, valIndex, continueLoop, j;
+	/*
+	 * Increment the temp holding the loop iteration number.
+	 */
 
-	    /*
-	     * Increment the temp holding the loop iteration number.
-	     */
+	iterVarPtr = &(compiledLocals[infoPtr->loopCtTemp]);
+	valuePtr = iterVarPtr->value.objPtr;
+	iterNum = (valuePtr->internalRep.longValue + 1);
+	TclSetLongObj(valuePtr, iterNum);
 
-	    iterVarPtr = &(compiledLocals[infoPtr->loopCtTemp]);
-	    valuePtr = iterVarPtr->value.objPtr;
-	    iterNum = (valuePtr->internalRep.longValue + 1);
-	    Tcl_SetLongObj(valuePtr, iterNum);
-		
-	    /*
-	     * Check whether all value lists are exhausted and we should
-	     * stop the loop.
-	     */
+	/*
+	 * Check whether all value lists are exhausted and we should stop the
+	 * loop.
+	 */
 
-	    continueLoop = 0;
-	    listTmpIndex = infoPtr->firstValueTemp;
-	    for (i = 0;  i < numLists;  i++) {
-		varListPtr = infoPtr->varLists[i];
-		numVars = varListPtr->numVars;
-		    
-		listVarPtr = &(compiledLocals[listTmpIndex]);
-		listPtr = listVarPtr->value.objPtr;
-		result = Tcl_ListObjLength(interp, listPtr, &listLen);
-		if (result != TCL_OK) {
-		    TRACE_WITH_OBJ(("%u => ERROR converting list %ld, \"%s\": ",
-		            opnd, i, O2S(listPtr)), Tcl_GetObjResult(interp));
-		    goto checkForCatch;
-		}
+	continueLoop = 0;
+	listTmpIndex = infoPtr->firstValueTemp;
+	for (i = 0;  i < numLists;  i++) {
+	    varListPtr = infoPtr->varLists[i];
+	    numVars = varListPtr->numVars;
+
+	    listVarPtr = &(compiledLocals[listTmpIndex]);
+	    listPtr = listVarPtr->value.objPtr;
+	    result = TclListObjLength(interp, listPtr, &listLen);
+	    if (result == TCL_OK) {
 		if (listLen > (iterNum * numVars)) {
 		    continueLoop = 1;
 		}
 		listTmpIndex++;
+	    } else {
+		TRACE_WITH_OBJ(("%u => ERROR converting list %ld, \"%s\": ",
+			opnd, i, O2S(listPtr)), Tcl_GetObjResult(interp));
+		goto checkForCatch;
 	    }
+	}
 
-	    /*
-	     * If some var in some var list still has a remaining list
-	     * element iterate one more time. Assign to var the next
-	     * element from its value list. We already checked above
-	     * that each list temp holds a valid list object.
-	     */
-		
-	    if (continueLoop) {
-		listTmpIndex = infoPtr->firstValueTemp;
-		for (i = 0;  i < numLists;  i++) {
-		    varListPtr = infoPtr->varLists[i];
-		    numVars = varListPtr->numVars;
+	/*
+	 * If some var in some var list still has a remaining list element
+	 * iterate one more time. Assign to var the next element from its
+	 * value list. We already checked above that each list temp holds a
+	 * valid list object (by calling Tcl_ListObjLength), but cannot rely
+	 * on that check remaining valid: one list could have been shimmered
+	 * as a side effect of setting a traced variable.
+	 */
 
-		    listVarPtr = &(compiledLocals[listTmpIndex]);
-		    listPtr = listVarPtr->value.objPtr;
+	if (continueLoop) {
+	    listTmpIndex = infoPtr->firstValueTemp;
+	    for (i = 0;  i < numLists;  i++) {
+		varListPtr = infoPtr->varLists[i];
+		numVars = varListPtr->numVars;
 
-		    valIndex = (iterNum * numVars);
-		    for (j = 0;  j < numVars;  j++) {
-			Tcl_Obj **elements;
+		listVarPtr = &(compiledLocals[listTmpIndex]);
+		listPtr = TclListObjCopy(NULL, listVarPtr->value.objPtr);
+		TclListObjGetElements(interp, listPtr, &listLen, &elements);
 
-			/*
-			 * The call to TclPtrSetVar might shimmer listPtr,
-			 * so re-fetch pointers every iteration for safety.
-			 * See test foreach-10.1.
-			 */
+		valIndex = (iterNum * numVars);
+		for (j = 0;  j < numVars;  j++) {
+		    if (valIndex >= listLen) {
+			TclNewObj(valuePtr);
+		    } else {
+			valuePtr = elements[valIndex];
+		    }
 
-			Tcl_ListObjGetElements(NULL, listPtr,
-				&listLen, &elements);
-			if (valIndex >= listLen) {
-			    TclNewObj(valuePtr);
-			} else {
-			    valuePtr = elements[valIndex];
-			}
-			    
-			varIndex = varListPtr->varIndexes[j];
-			varPtr = &(varFramePtr->compiledLocals[varIndex]);
-			part1 = varPtr->name;
-			while (TclIsVarLink(varPtr)) {
-			    varPtr = varPtr->value.linkPtr;
-			}
-			if (!((varPtr->flags & VAR_IN_HASHTABLE) && (varPtr->hPtr == NULL))
-			        && (varPtr->tracePtr == NULL)
-			        && (TclIsVarScalar(varPtr) || TclIsVarUndefined(varPtr))) {
-			    value2Ptr = varPtr->value.objPtr;
-			    if (valuePtr != value2Ptr) {
-				if (value2Ptr != NULL) {
-				    TclDecrRefCount(value2Ptr);
-				} else {
-				    TclSetVarScalar(varPtr);
-				    TclClearVarUndefined(varPtr);
-				}
-				varPtr->value.objPtr = valuePtr;
-				Tcl_IncrRefCount(valuePtr);
+		    varIndex = varListPtr->varIndexes[j];
+		    varPtr = &(compiledLocals[varIndex]);
+		    while (TclIsVarLink(varPtr)) {
+			varPtr = varPtr->value.linkPtr;
+		    }
+		    if (TclIsVarDirectWritable(varPtr)) {
+			value2Ptr = varPtr->value.objPtr;
+			if (valuePtr != value2Ptr) {
+			    if (value2Ptr != NULL) {
+				TclDecrRefCount(value2Ptr);
 			    }
-			} else {
-			    DECACHE_STACK_INFO();
+			    varPtr->value.objPtr = valuePtr;
 			    Tcl_IncrRefCount(valuePtr);
-			    value2Ptr = TclPtrSetVar(interp, varPtr, NULL, part1, 
-						     NULL, valuePtr, TCL_LEAVE_ERR_MSG);
-			    TclDecrRefCount(valuePtr);
-			    CACHE_STACK_INFO();
-			    if (value2Ptr == NULL) {
-				TRACE_WITH_OBJ(("%u => ERROR init. index temp %d: ",
-						opnd, varIndex),
-					       Tcl_GetObjResult(interp));
-				result = TCL_ERROR;
-				goto checkForCatch;
-			    }
 			}
-			valIndex++;
+		    } else {
+			DECACHE_STACK_INFO();
+			value2Ptr = TclPtrSetVar(interp, varPtr, NULL, NULL,
+				NULL, valuePtr, TCL_LEAVE_ERR_MSG, varIndex);
+			CACHE_STACK_INFO();
+			if (value2Ptr == NULL) {
+			    TRACE_WITH_OBJ((
+				    "%u => ERROR init. index temp %d: ",
+				    opnd,varIndex), Tcl_GetObjResult(interp));
+			    result = TCL_ERROR;
+			    TclDecrRefCount(listPtr);
+			    goto checkForCatch;
+			}
 		    }
-		    listTmpIndex++;
+		    valIndex++;
 		}
+		TclDecrRefCount(listPtr);
+		listTmpIndex++;
 	    }
-	    TRACE(("%u => %d lists, iter %d, %s loop\n", opnd, numLists, 
-	            iterNum, (continueLoop? "continue" : "exit")));
+	}
+	TRACE(("%u => %d lists, iter %d, %s loop\n", opnd, numLists,
+		iterNum, (continueLoop? "continue" : "exit")));
 
-	    /* 
-	     * Run-time peep-hole optimisation: the compiler ALWAYS follows
-	     * INST_FOREACH_STEP4 with an INST_JUMP_FALSE. We just skip that
-	     * instruction and jump direct from here.
-	     */
+	/*
+	 * Run-time peep-hole optimisation: the compiler ALWAYS follows
+	 * INST_FOREACH_STEP4 with an INST_JUMP_FALSE. We just skip that
+	 * instruction and jump direct from here.
+	 */
 
-	    pc += 5;
-	    if (*pc == INST_JUMP_FALSE1) {
-		NEXT_INST_F((continueLoop? 2 : TclGetInt1AtPtr(pc+1)), 0, 0);
-	    } else {
-		NEXT_INST_F((continueLoop? 5 : TclGetInt4AtPtr(pc+1)), 0, 0);
-	    }
+	pc += 5;
+	if (*pc == INST_JUMP_FALSE1) {
+	    NEXT_INST_F((continueLoop? 2 : TclGetInt1AtPtr(pc+1)), 0, 0);
+	} else {
+	    NEXT_INST_F((continueLoop? 5 : TclGetInt4AtPtr(pc+1)), 0, 0);
 	}
+    }
 
     case INST_BEGIN_CATCH4:
 	/*
-	 * Record start of the catch command with exception range index
-	 * equal to the operand. Push the current stack depth onto the
-	 * special catch stack.
+	 * Record start of the catch command with exception range index equal
+	 * to the operand. Push the current stack depth onto the special catch
+	 * stack.
 	 */
-	catchStackPtr[++catchTop] = stackTop;
+
+	*(++catchTop) = CURR_DEPTH;
 	TRACE(("%u => catchTop=%d, stackTop=%d\n",
-	       TclGetUInt4AtPtr(pc+1), catchTop, stackTop));
+		TclGetUInt4AtPtr(pc+1), (int) (catchTop - initCatchTop - 1),
+		(int) CURR_DEPTH));
 	NEXT_INST_F(5, 0, 0);
 
     case INST_END_CATCH:
 	catchTop--;
+	DECACHE_STACK_INFO();
+	Tcl_ResetResult(interp);
+	CACHE_STACK_INFO();
 	result = TCL_OK;
-	TRACE(("=> catchTop=%d\n", catchTop));
+	TRACE(("=> catchTop=%d\n", (int) (catchTop - initCatchTop - 1)));
 	NEXT_INST_F(1, 0, 0);
-	    
+
     case INST_PUSH_RESULT:
 	objResultPtr = Tcl_GetObjResult(interp);
-	TRACE_WITH_OBJ(("=> "), Tcl_GetObjResult(interp));
+	TRACE_WITH_OBJ(("=> "), objResultPtr);
 
 	/*
 	 * See the comments at INST_INVOKE_STK
 	 */
 	{
 	    Tcl_Obj *newObjResultPtr;
+
 	    TclNewObj(newObjResultPtr);
 	    Tcl_IncrRefCount(newObjResultPtr);
 	    iPtr->objResultPtr = newObjResultPtr;
@@ -4313,205 +6761,784 @@ TclExecuteByteCode(interp, codePtr)
 	NEXT_INST_F(1, 0, -1);
 
     case INST_PUSH_RETURN_CODE:
-	objResultPtr = Tcl_NewLongObj(result);
+	TclNewIntObj(objResultPtr, result);
 	TRACE(("=> %u\n", result));
 	NEXT_INST_F(1, 0, 1);
 
+    case INST_PUSH_RETURN_OPTIONS:
+	objResultPtr = Tcl_GetReturnOptions(interp, result);
+	TRACE_WITH_OBJ(("=> "), objResultPtr);
+	NEXT_INST_F(1, 0, 1);
+
+/* TODO: normalize "valPtr" to "valuePtr" */
+    {
+	int opnd, opnd2, allocateDict;
+	Tcl_Obj *dictPtr, *valPtr;
+	Var *varPtr;
+
+    case INST_DICT_GET:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	TRACE(("%u => ", opnd));
+	dictPtr = OBJ_AT_DEPTH(opnd);
+	if (opnd > 1) {
+	    dictPtr = TclTraceDictPath(interp, dictPtr, opnd-1,
+		    &OBJ_AT_DEPTH(opnd-1), DICT_PATH_READ);
+	    if (dictPtr == NULL) {
+		TRACE_WITH_OBJ((
+			"%u => ERROR tracing dictionary path into \"%s\": ",
+			opnd, O2S(OBJ_AT_DEPTH(opnd))),
+			Tcl_GetObjResult(interp));
+		result = TCL_ERROR;
+		goto checkForCatch;
+	    }
+	}
+	result = Tcl_DictObjGet(interp, dictPtr, OBJ_AT_TOS, &objResultPtr);
+	if ((result == TCL_OK) && objResultPtr) {
+	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	    NEXT_INST_V(5, opnd+1, 1);
+	}
+	if (result != TCL_OK) {
+	    TRACE_WITH_OBJ((
+		    "%u => ERROR reading leaf dictionary key \"%s\": ",
+		    opnd, O2S(dictPtr)), Tcl_GetObjResult(interp));
+	} else {
+	    DECACHE_STACK_INFO();
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "key \"", TclGetString(OBJ_AT_TOS),
+		    "\" not known in dictionary", NULL);
+	    CACHE_STACK_INFO();
+	    TRACE_WITH_OBJ(("%u => ERROR ", opnd), Tcl_GetObjResult(interp));
+	    result = TCL_ERROR;
+	}
+	goto checkForCatch;
+
+    case INST_DICT_SET:
+    case INST_DICT_UNSET:
+    case INST_DICT_INCR_IMM:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	opnd2 = TclGetUInt4AtPtr(pc+5);
+
+	varPtr = &(compiledLocals[opnd2]);
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+	TRACE(("%u %u => ", opnd, opnd2));
+	if (TclIsVarDirectReadable(varPtr)) {
+	    dictPtr = varPtr->value.objPtr;
+	} else {
+	    DECACHE_STACK_INFO();
+	    dictPtr = TclPtrGetVar(interp, varPtr, NULL,NULL,NULL, 0, opnd2);
+	    CACHE_STACK_INFO();
+	}
+	if (dictPtr == NULL) {
+	    TclNewObj(dictPtr);
+	    allocateDict = 1;
+	} else {
+	    allocateDict = Tcl_IsShared(dictPtr);
+	    if (allocateDict) {
+		dictPtr = Tcl_DuplicateObj(dictPtr);
+	    }
+	}
+
+	switch (*pc) {
+	case INST_DICT_SET:
+	    cleanup = opnd + 1;
+	    result = Tcl_DictObjPutKeyList(interp, dictPtr, opnd,
+		    &OBJ_AT_DEPTH(opnd), OBJ_AT_TOS);
+	    break;
+	case INST_DICT_INCR_IMM:
+	    cleanup = 1;
+	    opnd = TclGetInt4AtPtr(pc+1);
+	    result = Tcl_DictObjGet(interp, dictPtr, OBJ_AT_TOS, &valPtr);
+	    if (result != TCL_OK) {
+		break;
+	    }
+	    if (valPtr == NULL) {
+		Tcl_DictObjPut(NULL, dictPtr, OBJ_AT_TOS,Tcl_NewIntObj(opnd));
+	    } else {
+		Tcl_Obj *incrPtr = Tcl_NewIntObj(opnd);
+
+		Tcl_IncrRefCount(incrPtr);
+		if (Tcl_IsShared(valPtr)) {
+		    valPtr = Tcl_DuplicateObj(valPtr);
+		    Tcl_DictObjPut(NULL, dictPtr, OBJ_AT_TOS, valPtr);
+		}
+		result = TclIncrObj(interp, valPtr, incrPtr);
+		if (result == TCL_OK) {
+		    TclInvalidateStringRep(dictPtr);
+		}
+		TclDecrRefCount(incrPtr);
+	    }
+	    break;
+	case INST_DICT_UNSET:
+	    cleanup = opnd;
+	    result = Tcl_DictObjRemoveKeyList(interp, dictPtr, opnd,
+		    &OBJ_AT_DEPTH(opnd-1));
+	    break;
+	default:
+	    cleanup = 0; /* stop compiler warning */
+	    Tcl_Panic("Should not happen!");
+	}
+
+	if (result != TCL_OK) {
+	    if (allocateDict) {
+		TclDecrRefCount(dictPtr);
+	    }
+	    TRACE_WITH_OBJ(("%u %u => ERROR updating dictionary: ",
+		    opnd, opnd2), Tcl_GetObjResult(interp));
+	    goto checkForCatch;
+	}
+
+	if (TclIsVarDirectWritable(varPtr)) {
+	    if (allocateDict) {
+		Tcl_Obj *oldValuePtr = varPtr->value.objPtr;
+
+		Tcl_IncrRefCount(dictPtr);
+		if (oldValuePtr != NULL) {
+		    TclDecrRefCount(oldValuePtr);
+		}
+		varPtr->value.objPtr = dictPtr;
+	    }
+	    objResultPtr = dictPtr;
+	} else {
+	    Tcl_IncrRefCount(dictPtr);
+	    DECACHE_STACK_INFO();
+	    objResultPtr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL,
+		    dictPtr, TCL_LEAVE_ERR_MSG, opnd2);
+	    CACHE_STACK_INFO();
+	    TclDecrRefCount(dictPtr);
+	    if (objResultPtr == NULL) {
+		TRACE_APPEND(("ERROR: %.30s\n",
+			O2S(Tcl_GetObjResult(interp))));
+		result = TCL_ERROR;
+		goto checkForCatch;
+	    }
+	}
+#ifndef TCL_COMPILE_DEBUG
+	if (*(pc+9) == INST_POP) {
+	    NEXT_INST_V(10, cleanup, 0);
+	}
+#endif
+	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	NEXT_INST_V(9, cleanup, 1);
+
+    case INST_DICT_APPEND:
+    case INST_DICT_LAPPEND:
+	opnd = TclGetUInt4AtPtr(pc+1);
+
+	varPtr = &(compiledLocals[opnd]);
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+	TRACE(("%u => ", opnd));
+	if (TclIsVarDirectReadable(varPtr)) {
+	    dictPtr = varPtr->value.objPtr;
+	} else {
+	    DECACHE_STACK_INFO();
+	    dictPtr = TclPtrGetVar(interp, varPtr, NULL, NULL, NULL, 0, opnd);
+	    CACHE_STACK_INFO();
+	}
+	if (dictPtr == NULL) {
+	    TclNewObj(dictPtr);
+	    allocateDict = 1;
+	} else {
+	    allocateDict = Tcl_IsShared(dictPtr);
+	    if (allocateDict) {
+		dictPtr = Tcl_DuplicateObj(dictPtr);
+	    }
+	}
+
+	result = Tcl_DictObjGet(interp, dictPtr, OBJ_UNDER_TOS, &valPtr);
+	if (result != TCL_OK) {
+	    if (allocateDict) {
+		TclDecrRefCount(dictPtr);
+	    }
+	    goto checkForCatch;
+	}
+
+	/*
+	 * Note that a non-existent key results in a NULL valPtr, which is a
+	 * case handled separately below. What we *can* say at this point is
+	 * that the write-back will always succeed.
+	 */
+
+	switch (*pc) {
+	case INST_DICT_APPEND:
+	    if (valPtr == NULL) {
+		valPtr = OBJ_AT_TOS;
+	    } else {
+		if (Tcl_IsShared(valPtr)) {
+		    valPtr = Tcl_DuplicateObj(valPtr);
+		}
+		Tcl_AppendObjToObj(valPtr, OBJ_AT_TOS);
+	    }
+	    break;
+	case INST_DICT_LAPPEND:
+	    /*
+	     * More complex because list-append can fail.
+	     */
+
+	    if (valPtr == NULL) {
+		valPtr = Tcl_NewListObj(1, &OBJ_AT_TOS);
+	    } else if (Tcl_IsShared(valPtr)) {
+		valPtr = Tcl_DuplicateObj(valPtr);
+		result = Tcl_ListObjAppendElement(interp, valPtr, OBJ_AT_TOS);
+		if (result != TCL_OK) {
+		    TclDecrRefCount(valPtr);
+		    if (allocateDict) {
+			TclDecrRefCount(dictPtr);
+		    }
+		    goto checkForCatch;
+		}
+	    } else {
+		result = Tcl_ListObjAppendElement(interp, valPtr, OBJ_AT_TOS);
+		if (result != TCL_OK) {
+		    if (allocateDict) {
+			TclDecrRefCount(dictPtr);
+		    }
+		    goto checkForCatch;
+		}
+	    }
+	    break;
+	default:
+	    Tcl_Panic("Should not happen!");
+	}
+
+	Tcl_DictObjPut(NULL, dictPtr, OBJ_UNDER_TOS, valPtr);
+
+	if (TclIsVarDirectWritable(varPtr)) {
+	    if (allocateDict) {
+		Tcl_Obj *oldValuePtr = varPtr->value.objPtr;
+
+		Tcl_IncrRefCount(dictPtr);
+		if (oldValuePtr != NULL) {
+		    TclDecrRefCount(oldValuePtr);
+		}
+		varPtr->value.objPtr = dictPtr;
+	    }
+	    objResultPtr = dictPtr;
+	} else {
+	    Tcl_IncrRefCount(dictPtr);
+	    DECACHE_STACK_INFO();
+	    objResultPtr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL,
+		    dictPtr, TCL_LEAVE_ERR_MSG, opnd);
+	    CACHE_STACK_INFO();
+	    TclDecrRefCount(dictPtr);
+	    if (objResultPtr == NULL) {
+		TRACE_APPEND(("ERROR: %.30s\n",
+			O2S(Tcl_GetObjResult(interp))));
+		result = TCL_ERROR;
+		goto checkForCatch;
+	    }
+	}
+#ifndef TCL_COMPILE_DEBUG
+	if (*(pc+5) == INST_POP) {
+	    NEXT_INST_F(6, 2, 0);
+	}
+#endif
+	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
+	NEXT_INST_F(5, 2, 1);
+    }
+
+    {
+	int opnd, done;
+	Tcl_Obj *statePtr, *dictPtr, *keyPtr, *valuePtr, *emptyPtr;
+	Var *varPtr;
+	Tcl_DictSearch *searchPtr;
+
+    case INST_DICT_FIRST:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	TRACE(("%u => ", opnd));
+	dictPtr = POP_OBJECT();
+	searchPtr = (Tcl_DictSearch *) ckalloc(sizeof(Tcl_DictSearch));
+	result = Tcl_DictObjFirst(interp, dictPtr, searchPtr, &keyPtr,
+		&valuePtr, &done);
+	if (result != TCL_OK) {
+	    ckfree((char *) searchPtr);
+	    goto checkForCatch;
+	}
+	TclNewObj(statePtr);
+	statePtr->typePtr = &dictIteratorType;
+	statePtr->internalRep.twoPtrValue.ptr1 = (void *) searchPtr;
+	statePtr->internalRep.twoPtrValue.ptr2 = (void *) dictPtr;
+	varPtr = (compiledLocals + opnd);
+	if (varPtr->value.objPtr) {
+	    if (varPtr->value.objPtr->typePtr != &dictIteratorType) {
+		TclDecrRefCount(varPtr->value.objPtr);
+	    } else {
+		Tcl_Panic("mis-issued dictFirst!");
+	    }
+	}
+	varPtr->value.objPtr = statePtr;
+	Tcl_IncrRefCount(statePtr);
+	goto pushDictIteratorResult;
+
+    case INST_DICT_NEXT:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	TRACE(("%u => ", opnd));
+	statePtr = compiledLocals[opnd].value.objPtr;
+	if (statePtr == NULL || statePtr->typePtr != &dictIteratorType) {
+	    Tcl_Panic("mis-issued dictNext!");
+	}
+	searchPtr = (Tcl_DictSearch *) statePtr->internalRep.twoPtrValue.ptr1;
+	Tcl_DictObjNext(searchPtr, &keyPtr, &valuePtr, &done);
+    pushDictIteratorResult:
+	if (done) {
+	    TclNewObj(emptyPtr);
+	    PUSH_OBJECT(emptyPtr);
+	    PUSH_OBJECT(emptyPtr);
+	} else {
+	    PUSH_OBJECT(valuePtr);
+	    PUSH_OBJECT(keyPtr);
+	}
+	TRACE_APPEND(("\"%.30s\" \"%.30s\" %d",
+		O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), done));
+	objResultPtr = constants[done];
+	/* TODO: consider opt like INST_FOREACH_STEP4 */
+	NEXT_INST_F(5, 0, 1);
+
+    case INST_DICT_DONE:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	TRACE(("%u => ", opnd));
+	statePtr = compiledLocals[opnd].value.objPtr;
+	if (statePtr == NULL) {
+	    Tcl_Panic("mis-issued dictDone!");
+	}
+
+	if (statePtr->typePtr == &dictIteratorType) {
+	    /*
+	     * First kill the search, and then release the reference to the
+	     * dictionary that we were holding.
+	     */
+
+	    searchPtr = (Tcl_DictSearch *)
+		    statePtr->internalRep.twoPtrValue.ptr1;
+	    Tcl_DictObjDone(searchPtr);
+	    ckfree((char *) searchPtr);
+
+	    dictPtr = (Tcl_Obj *) statePtr->internalRep.twoPtrValue.ptr2;
+	    TclDecrRefCount(dictPtr);
+
+	    /*
+	     * Set the internal variable to an empty object to signify that we
+	     * don't hold an iterator.
+	     */
+
+	    TclDecrRefCount(statePtr);
+	    TclNewObj(emptyPtr);
+	    compiledLocals[opnd].value.objPtr = emptyPtr;
+	    Tcl_IncrRefCount(emptyPtr);
+	}
+	NEXT_INST_F(5, 0, 0);
+    }
+
+    {
+	int opnd, opnd2, i, length, allocdict;
+	Tcl_Obj **keyPtrPtr, *dictPtr;
+	DictUpdateInfo *duiPtr;
+	Var *varPtr;
+
+    case INST_DICT_UPDATE_START:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	opnd2 = TclGetUInt4AtPtr(pc+5);
+	varPtr = &(compiledLocals[opnd]);
+	duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData;
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+	TRACE(("%u => ", opnd));
+	if (TclIsVarDirectReadable(varPtr)) {
+	    dictPtr = varPtr->value.objPtr;
+	} else {
+	    DECACHE_STACK_INFO();
+	    dictPtr = TclPtrGetVar(interp, varPtr, NULL, NULL, NULL,
+		    TCL_LEAVE_ERR_MSG, opnd);
+	    CACHE_STACK_INFO();
+	    if (dictPtr == NULL) {
+		goto dictUpdateStartFailed;
+	    }
+	}
+	if (TclListObjGetElements(interp, OBJ_AT_TOS, &length,
+		&keyPtrPtr) != TCL_OK) {
+	    goto dictUpdateStartFailed;
+	}
+	if (length != duiPtr->length) {
+	    Tcl_Panic("dictUpdateStart argument length mismatch");
+	}
+	for (i=0 ; i<length ; i++) {
+	    Tcl_Obj *valPtr;
+
+	    if (Tcl_DictObjGet(interp, dictPtr, keyPtrPtr[i],
+		    &valPtr) != TCL_OK) {
+		goto dictUpdateStartFailed;
+	    }
+	    varPtr = &(compiledLocals[duiPtr->varIndices[i]]);
+	    while (TclIsVarLink(varPtr)) {
+		varPtr = varPtr->value.linkPtr;
+	    }
+	    DECACHE_STACK_INFO();
+	    if (valPtr == NULL) {
+		TclObjUnsetVar2(interp,
+			localName(iPtr->varFramePtr, duiPtr->varIndices[i]),
+			NULL, 0);
+	    } else if (TclPtrSetVar(interp, varPtr, NULL, NULL, NULL,
+		    valPtr, TCL_LEAVE_ERR_MSG,
+		    duiPtr->varIndices[i]) == NULL) {
+		CACHE_STACK_INFO();
+	    dictUpdateStartFailed:
+		result = TCL_ERROR;
+		goto checkForCatch;
+	    }
+	    CACHE_STACK_INFO();
+	}
+	NEXT_INST_F(9, 0, 0);
+
+    case INST_DICT_UPDATE_END:
+	opnd = TclGetUInt4AtPtr(pc+1);
+	opnd2 = TclGetUInt4AtPtr(pc+5);
+	varPtr = &(compiledLocals[opnd]);
+	duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData;
+	while (TclIsVarLink(varPtr)) {
+	    varPtr = varPtr->value.linkPtr;
+	}
+	TRACE(("%u => ", opnd));
+	if (TclIsVarDirectReadable(varPtr)) {
+	    dictPtr = varPtr->value.objPtr;
+	} else {
+	    DECACHE_STACK_INFO();
+	    dictPtr = TclPtrGetVar(interp, varPtr, NULL, NULL, NULL, 0, opnd);
+	    CACHE_STACK_INFO();
+	}
+	if (dictPtr == NULL) {
+	    NEXT_INST_F(9, 1, 0);
+	}
+	if (Tcl_DictObjSize(interp, dictPtr, &length) != TCL_OK
+		|| TclListObjGetElements(interp, OBJ_AT_TOS, &length,
+			&keyPtrPtr) != TCL_OK) {
+	    result = TCL_ERROR;
+	    goto checkForCatch;
+	}
+	allocdict = Tcl_IsShared(dictPtr);
+	if (allocdict) {
+	    dictPtr = Tcl_DuplicateObj(dictPtr);
+	}
+	for (i=0 ; i<length ; i++) {
+	    Tcl_Obj *valPtr;
+	    Var *var2Ptr;
+
+	    var2Ptr = &(compiledLocals[duiPtr->varIndices[i]]);
+	    while (TclIsVarLink(var2Ptr)) {
+		var2Ptr = var2Ptr->value.linkPtr;
+	    }
+	    if (TclIsVarDirectReadable(var2Ptr)) {
+		valPtr = var2Ptr->value.objPtr;
+	    } else {
+		DECACHE_STACK_INFO();
+		valPtr = TclPtrGetVar(interp, var2Ptr, NULL, NULL, NULL, 0,
+			duiPtr->varIndices[i]);
+		CACHE_STACK_INFO();
+	    }
+	    if (valPtr == NULL) {
+		Tcl_DictObjRemove(interp, dictPtr, keyPtrPtr[i]);
+	    } else if (dictPtr == valPtr) {
+		Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i],
+			Tcl_DuplicateObj(valPtr));
+	    } else {
+		Tcl_DictObjPut(interp, dictPtr, keyPtrPtr[i], valPtr);
+	    }
+	}
+	if (TclIsVarDirectWritable(varPtr)) {
+	    Tcl_IncrRefCount(dictPtr);
+	    TclDecrRefCount(varPtr->value.objPtr);
+	    varPtr->value.objPtr = dictPtr;
+	} else {
+	    DECACHE_STACK_INFO();
+	    objResultPtr = TclPtrSetVar(interp, varPtr, NULL, NULL, NULL,
+		    dictPtr, TCL_LEAVE_ERR_MSG, opnd);
+	    CACHE_STACK_INFO();
+	    if (objResultPtr == NULL) {
+		if (allocdict) {
+		    TclDecrRefCount(dictPtr);
+		}
+		result = TCL_ERROR;
+		goto checkForCatch;
+	    }
+	}
+	NEXT_INST_F(9, 1, 0);
+    }
+
     default:
-	panic("TclExecuteByteCode: unrecognized opCode %u", *pc);
+	Tcl_Panic("TclExecuteByteCode: unrecognized opCode %u", *pc);
     } /* end of switch on opCode */
 
     /*
-     * Division by zero in an expression. Control only reaches this
-     * point by "goto divideByZero".
+     * Division by zero in an expression. Control only reaches this point by
+     * "goto divideByZero".
      */
-	
+
  divideByZero:
     DECACHE_STACK_INFO();
-    Tcl_ResetResult(interp);
-    Tcl_AppendToObj(Tcl_GetObjResult(interp), "divide by zero", -1);
-    Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero",
-            (char *) NULL);
+    Tcl_SetObjResult(interp, Tcl_NewStringObj("divide by zero", -1));
+    Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero", NULL);
     CACHE_STACK_INFO();
 
     result = TCL_ERROR;
     goto checkForCatch;
-	
+
     /*
-     * An external evaluation (INST_INVOKE or INST_EVAL) returned 
-     * something different from TCL_OK, or else INST_BREAK or 
-     * INST_CONTINUE were called.
+     * Exponentiation of zero by negative number in an expression. Control
+     * only reaches this point by "goto exponOfZero".
      */
 
- processExceptionReturn:
-#if TCL_COMPILE_DEBUG    
-    switch (*pc) {
-        case INST_INVOKE_STK1:
-        case INST_INVOKE_STK4:
+ exponOfZero:
+    DECACHE_STACK_INFO();
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(
+	    "exponentiation of zero by negative power", -1));
+    Tcl_SetErrorCode(interp, "ARITH", "DOMAIN",
+	    "exponentiation of zero by negative power", NULL);
+    CACHE_STACK_INFO();
+    result = TCL_ERROR;
+    goto checkForCatch;
+
+    /*
+     * Block for variables needed to process exception returns.
+     */
+
+    {
+	ExceptionRange *rangePtr;
+				/* Points to closest loop or catch exception
+				 * range enclosing the pc. Used by various
+				 * instructions and processCatch to process
+				 * break, continue, and errors. */
+	Tcl_Obj *valuePtr;
+	const char *bytes;
+	int length;
+#if TCL_COMPILE_DEBUG
+	int opnd;
+#endif
+
+	/*
+	 * An external evaluation (INST_INVOKE or INST_EVAL) returned
+	 * something different from TCL_OK, or else INST_BREAK or
+	 * INST_CONTINUE were called.
+	 */
+
+    processExceptionReturn:
+#if TCL_COMPILE_DEBUG
+	switch (*pc) {
+	case INST_INVOKE_STK1:
+	    opnd = TclGetUInt1AtPtr(pc+1);
 	    TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf));
 	    break;
-        case INST_EVAL_STK:
+	case INST_INVOKE_STK4:
+	    opnd = TclGetUInt4AtPtr(pc+1);
+	    TRACE(("%u => ... after \"%.20s\": ", opnd, cmdNameBuf));
+	    break;
+	case INST_EVAL_STK:
 	    /*
-	     * Note that the object at stacktop has to be used
-	     * before doing the cleanup.
+	     * Note that the object at stacktop has to be used before doing
+	     * the cleanup.
 	     */
 
-	    TRACE(("\"%.30s\" => ", O2S(stackPtr[stackTop])));
+	    TRACE(("\"%.30s\" => ", O2S(OBJ_AT_TOS)));
 	    break;
-        default:
+	default:
 	    TRACE(("=> "));
-    }		    
-#endif	   
-    if ((result == TCL_CONTINUE) || (result == TCL_BREAK)) {
-	rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 0, codePtr);
-	if (rangePtr == NULL) {
-	    TRACE_APPEND(("no encl. loop or catch, returning %s\n",
-	            StringForResultCode(result)));
-	    goto abnormalReturn;
-	} 
-	if (rangePtr->type == CATCH_EXCEPTION_RANGE) {
-	    TRACE_APPEND(("%s ...\n", StringForResultCode(result)));
-	    goto processCatch;
 	}
-	while (cleanup--) {
-	    valuePtr = POP_OBJECT();
-	    TclDecrRefCount(valuePtr);
+#endif
+	if ((result == TCL_CONTINUE) || (result == TCL_BREAK)) {
+	    rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 0, codePtr);
+	    if (rangePtr == NULL) {
+		TRACE_APPEND(("no encl. loop or catch, returning %s\n",
+			StringForResultCode(result)));
+		goto abnormalReturn;
+	    }
+	    if (rangePtr->type == CATCH_EXCEPTION_RANGE) {
+		TRACE_APPEND(("%s ...\n", StringForResultCode(result)));
+		goto processCatch;
+	    }
+	    while (cleanup--) {
+		valuePtr = POP_OBJECT();
+		TclDecrRefCount(valuePtr);
+	    }
+	    if (result == TCL_BREAK) {
+		result = TCL_OK;
+		pc = (codePtr->codeStart + rangePtr->breakOffset);
+		TRACE_APPEND(("%s, range at %d, new pc %d\n",
+			StringForResultCode(result),
+			rangePtr->codeOffset, rangePtr->breakOffset));
+		NEXT_INST_F(0, 0, 0);
+	    } else {
+		if (rangePtr->continueOffset == -1) {
+		    TRACE_APPEND((
+			    "%s, loop w/o continue, checking for catch\n",
+			    StringForResultCode(result)));
+		    goto checkForCatch;
+		}
+		result = TCL_OK;
+		pc = (codePtr->codeStart + rangePtr->continueOffset);
+		TRACE_APPEND(("%s, range at %d, new pc %d\n",
+			StringForResultCode(result),
+			rangePtr->codeOffset, rangePtr->continueOffset));
+		NEXT_INST_F(0, 0, 0);
+	    }
+#if TCL_COMPILE_DEBUG
+	} else if (traceInstructions) {
+	    if ((result != TCL_ERROR) && (result != TCL_RETURN)) {
+		Tcl_Obj *objPtr = Tcl_GetObjResult(interp);
+		TRACE_APPEND(("OTHER RETURN CODE %d, result= \"%s\"\n ",
+			result, O2S(objPtr)));
+	    } else {
+		Tcl_Obj *objPtr = Tcl_GetObjResult(interp);
+		TRACE_APPEND(("%s, result= \"%s\"\n",
+			StringForResultCode(result), O2S(objPtr)));
+	    }
+#endif
 	}
-	if (result == TCL_BREAK) {
-	    result = TCL_OK;
-	    pc = (codePtr->codeStart + rangePtr->breakOffset);
-	    TRACE_APPEND(("%s, range at %d, new pc %d\n",
-		   StringForResultCode(result),
-		   rangePtr->codeOffset, rangePtr->breakOffset));
-	    NEXT_INST_F(0, 0, 0);
-	} else {
-	    if (rangePtr->continueOffset == -1) {
-		TRACE_APPEND(("%s, loop w/o continue, checking for catch\n",
-		        StringForResultCode(result)));
-		goto checkForCatch;
-	    } 
-	    result = TCL_OK;
-	    pc = (codePtr->codeStart + rangePtr->continueOffset);
-	    TRACE_APPEND(("%s, range at %d, new pc %d\n",
-		   StringForResultCode(result),
-		   rangePtr->codeOffset, rangePtr->continueOffset));
-	    NEXT_INST_F(0, 0, 0);
-	}
-#if TCL_COMPILE_DEBUG    
-    } else if (traceInstructions) {
-	if ((result != TCL_ERROR) && (result != TCL_RETURN))  {
-	    objPtr = Tcl_GetObjResult(interp);
-	    TRACE_APPEND(("OTHER RETURN CODE %d, result= \"%s\"\n ", 
-		    result, O2S(objPtr)));
-	} else {
-	    objPtr = Tcl_GetObjResult(interp);
-	    TRACE_APPEND(("%s, result= \"%s\"\n", 
-	            StringForResultCode(result), O2S(objPtr)));
+
+	/*
+	 * Execution has generated an "exception" such as TCL_ERROR. If the
+	 * exception is an error, record information about what was being
+	 * executed when the error occurred. Find the closest enclosing catch
+	 * range, if any. If no enclosing catch range is found, stop execution
+	 * and return the "exception" code.
+	 */
+
+	checkForCatch:
+	if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) {
+	    bytes = GetSrcInfoForPc(pc, codePtr, &length);
+	    if (bytes != NULL) {
+		DECACHE_STACK_INFO();
+		Tcl_LogCommandInfo(interp, codePtr->source, bytes, length);
+		CACHE_STACK_INFO();
+	    }
+	}
+	iPtr->flags &= ~ERR_ALREADY_LOGGED;
+
+	/*
+	 * Clear all expansions that may have started after the last
+	 * INST_BEGIN_CATCH.
+	 */
+
+	while ((expandNestList != NULL) && ((catchTop == initCatchTop) ||
+		(*catchTop <=
+		(ptrdiff_t) expandNestList->internalRep.twoPtrValue.ptr1))) {
+	    Tcl_Obj *objPtr = expandNestList->internalRep.twoPtrValue.ptr2;
+
+	    TclDecrRefCount(expandNestList);
+	    expandNestList = objPtr;
 	}
+
+	/*
+	 * We must not catch an exceeded limit. Instead, it blows outwards
+	 * until we either hit another interpreter (presumably where the limit
+	 * is not exceeded) or we get to the top-level.
+	 */
+
+	if (TclLimitExceeded(iPtr->limit)) {
+#ifdef TCL_COMPILE_DEBUG
+	    if (traceInstructions) {
+		fprintf(stdout, "   ... limit exceeded, returning %s\n",
+			StringForResultCode(result));
+	    }
 #endif
-    }
-	    	
-    /*
-     * Execution has generated an "exception" such as TCL_ERROR. If the
-     * exception is an error, record information about what was being
-     * executed when the error occurred. Find the closest enclosing
-     * catch range, if any. If no enclosing catch range is found, stop
-     * execution and return the "exception" code.
-     */
-	
- checkForCatch:
-    if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) {
-	bytes = GetSrcInfoForPc(pc, codePtr, &length);
-	if (bytes != NULL) {
-	    DECACHE_STACK_INFO();
-	    Tcl_LogCommandInfo(interp, codePtr->source, bytes, length);
-            CACHE_STACK_INFO();
-	    iPtr->flags |= ERR_ALREADY_LOGGED;
+	    goto abnormalReturn;
 	}
-    }
-    if (catchTop == -1) {
+	if (catchTop == initCatchTop) {
 #ifdef TCL_COMPILE_DEBUG
-	if (traceInstructions) {
-	    fprintf(stdout, "   ... no enclosing catch, returning %s\n",
-	            StringForResultCode(result));
+	    if (traceInstructions) {
+		fprintf(stdout, "   ... no enclosing catch, returning %s\n",
+			StringForResultCode(result));
+	    }
+#endif
+	    goto abnormalReturn;
 	}
+	rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 1, codePtr);
+	if (rangePtr == NULL) {
+	    /*
+	     * This is only possible when compiling a [catch] that sends its
+	     * script to INST_EVAL. Cannot correct the compiler without
+	     * breakingcompat with previous .tbc compiled scripts.
+	     */
+
+#ifdef TCL_COMPILE_DEBUG
+	    if (traceInstructions) {
+		fprintf(stdout, "   ... no enclosing catch, returning %s\n",
+			StringForResultCode(result));
+	    }
 #endif
-	goto abnormalReturn;
-    }
-    rangePtr = GetExceptRangeForPc(pc, /*catchOnly*/ 1, codePtr);
-    if (rangePtr == NULL) {
+	    goto abnormalReturn;
+	}
+
 	/*
-	 * This is only possible when compiling a [catch] that sends its
-	 * script to INST_EVAL. Cannot correct the compiler without 
-	 * breakingcompat with previous .tbc compiled scripts.
+	 * A catch exception range (rangePtr) was found to handle an
+	 * "exception". It was found either by checkForCatch just above or by
+	 * an instruction during break, continue, or error processing. Jump to
+	 * its catchOffset after unwinding the operand stack to the depth it
+	 * had when starting to execute the range's catch command.
 	 */
+
+    processCatch:
+	while (CURR_DEPTH > *catchTop) {
+	    valuePtr = POP_OBJECT();
+	    TclDecrRefCount(valuePtr);
+	}
 #ifdef TCL_COMPILE_DEBUG
 	if (traceInstructions) {
-	    fprintf(stdout, "   ... no enclosing catch, returning %s\n",
-	            StringForResultCode(result));
+	    fprintf(stdout, "  ... found catch at %d, catchTop=%d, "
+		    "unwound to %ld, new pc %u\n",
+		    rangePtr->codeOffset, (int) (catchTop - initCatchTop - 1),
+		    (long) *catchTop, (unsigned) rangePtr->catchOffset);
 	}
 #endif
-	goto abnormalReturn;
-    }
+	pc = (codePtr->codeStart + rangePtr->catchOffset);
+	NEXT_INST_F(0, 0, 0);	/* Restart the execution loop at pc. */
 
-    /*
-     * A catch exception range (rangePtr) was found to handle an
-     * "exception". It was found either by checkForCatch just above or
-     * by an instruction during break, continue, or error processing.
-     * Jump to its catchOffset after unwinding the operand stack to
-     * the depth it had when starting to execute the range's catch
-     * command.
-     */
+	/*
+	 * end of infinite loop dispatching on instructions.
+	 */
 
- processCatch:
-    while (stackTop > catchStackPtr[catchTop]) {
-	valuePtr = POP_OBJECT();
-	TclDecrRefCount(valuePtr);
-    }
-#ifdef TCL_COMPILE_DEBUG
-    if (traceInstructions) {
-	fprintf(stdout, "  ... found catch at %d, catchTop=%d, unwound to %d, new pc %u\n",
-	        rangePtr->codeOffset, catchTop, catchStackPtr[catchTop],
-	        (unsigned int)(rangePtr->catchOffset));
-    }
-#endif	
-    pc = (codePtr->codeStart + rangePtr->catchOffset);
-    NEXT_INST_F(0, 0, 0); /* restart the execution loop at pc */
+	/*
+	 * Abnormal return code. Restore the stack to state it had when
+	 * starting to execute the ByteCode. Panic if the stack is below the
+	 * initial level.
+	 */
 
-    /* 
-     * end of infinite loop dispatching on instructions.
-     */
+    abnormalReturn:
+	TCL_DTRACE_INST_LAST();
+	while (tosPtr > initTosPtr) {
+	    Tcl_Obj *objPtr = POP_OBJECT();
 
-    /*
-     * Abnormal return code. Restore the stack to state it had when starting
-     * to execute the ByteCode. Panic if the stack is below the initial level.
-     */
+	    Tcl_DecrRefCount(objPtr);
+	}
 
- abnormalReturn:
-    TCL_DTRACE_INST_LAST();
-    while (stackTop > initStackTop) {
-	valuePtr = POP_OBJECT();
-	TclDecrRefCount(valuePtr);
-    }
-    if (stackTop < initStackTop) {
-	fprintf(stderr, "\nTclExecuteByteCode: abnormal return at pc %u: stack top %d < entry stack top %d\n",
-	        (unsigned int)(pc - codePtr->codeStart),
-		(unsigned int) stackTop,
-		(unsigned int) initStackTop);
-	panic("TclExecuteByteCode execution failure: end stack top < start stack top");
+	/*
+	 * Clear all expansions.
+	 */
+
+	while (expandNestList) {
+	    Tcl_Obj *objPtr = expandNestList->internalRep.twoPtrValue.ptr2;
+
+	    TclDecrRefCount(expandNestList);
+	    expandNestList = objPtr;
+	}
+	if (tosPtr < initTosPtr) {
+	    fprintf(stderr,
+		    "\nTclExecuteByteCode: abnormal return at pc %u: "
+		    "stack top %d < entry stack top %d\n",
+		    (unsigned)(pc - codePtr->codeStart),
+		    (unsigned) CURR_DEPTH, (unsigned) 0);
+	    Tcl_Panic("TclExecuteByteCode execution failure: end stack top < start stack top");
+	}
     }
-	
+
     /*
-     * Free the catch stack array if malloc'ed storage was used.
+     * Restore the stack to the state it had previous to this bytecode.
      */
 
-    if (catchStackPtr != catchStackStorage) {
-	ckfree((char *) catchStackPtr);
-    }
-    eePtr->stackTop = initStackTop;
-
+    TclStackFree(interp, initCatchTop+1);
     return result;
-#undef STATIC_CATCH_STACK_SIZE
+#undef iPtr
 }
 
 #ifdef TCL_COMPILE_DEBUG
@@ -4520,9 +7547,9 @@ TclExecuteByteCode(interp, codePtr)
  *
  * PrintByteCodeInfo --
  *
- *	This procedure prints a summary about a bytecode object to stdout.
- *	It is called by TclExecuteByteCode when starting to execute the
- *	bytecode object if tclTraceExec has the value 2 or more.
+ *	This procedure prints a summary about a bytecode object to stdout. It
+ *	is called by TclExecuteByteCode when starting to execute the bytecode
+ *	object if tclTraceExec has the value 2 or more.
  *
  * Results:
  *	None.
@@ -4534,46 +7561,45 @@ TclExecuteByteCode(interp, codePtr)
  */
 
 static void
-PrintByteCodeInfo(codePtr)
-    register ByteCode *codePtr;	/* The bytecode whose summary is printed
-				 * to stdout. */
+PrintByteCodeInfo(
+    register ByteCode *codePtr)	/* The bytecode whose summary is printed to
+				 * stdout. */
 {
     Proc *procPtr = codePtr->procPtr;
     Interp *iPtr = (Interp *) *codePtr->interpHandle;
 
-    fprintf(stdout, "\nExecuting ByteCode 0x%x, refCt %u, epoch %u, interp 0x%x (epoch %u)\n",
-	    (unsigned int) codePtr, codePtr->refCount,
-	    codePtr->compileEpoch, (unsigned int) iPtr,
+    fprintf(stdout, "\nExecuting ByteCode 0x%p, refCt %u, epoch %u, interp 0x%p (epoch %u)\n",
+	    codePtr, codePtr->refCount, codePtr->compileEpoch, iPtr,
 	    iPtr->compileEpoch);
-    
+
     fprintf(stdout, "  Source: ");
     TclPrintSource(stdout, codePtr->source, 60);
 
     fprintf(stdout, "\n  Cmds %d, src %d, inst %u, litObjs %u, aux %d, stkDepth %u, code/src %.2f\n",
-            codePtr->numCommands, codePtr->numSrcBytes,
+	    codePtr->numCommands, codePtr->numSrcBytes,
 	    codePtr->numCodeBytes, codePtr->numLitObjects,
 	    codePtr->numAuxDataItems, codePtr->maxStackDepth,
 #ifdef TCL_COMPILE_STATS
-	    (codePtr->numSrcBytes?
-	            ((float)codePtr->structureSize)/((float)codePtr->numSrcBytes) : 0.0));
-#else
-	    0.0);
+	    codePtr->numSrcBytes?
+		    ((float)codePtr->structureSize)/codePtr->numSrcBytes :
 #endif
+	    0.0);
+
 #ifdef TCL_COMPILE_STATS
-    fprintf(stdout, "  Code %u = header %u+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n",
-	    (unsigned int)codePtr->structureSize,
-	    (unsigned int)(sizeof(ByteCode) - (sizeof(size_t) + sizeof(Tcl_Time))),
+    fprintf(stdout, "  Code %lu = header %lu+inst %d+litObj %lu+exc %lu+aux %lu+cmdMap %d\n",
+	    (unsigned long) codePtr->structureSize,
+	    (unsigned long) (sizeof(ByteCode)-sizeof(size_t)-sizeof(Tcl_Time)),
 	    codePtr->numCodeBytes,
-	    (unsigned long)(codePtr->numLitObjects * sizeof(Tcl_Obj *)),
-	    (unsigned long)(codePtr->numExceptRanges * sizeof(ExceptionRange)),
-	    (unsigned long)(codePtr->numAuxDataItems * sizeof(AuxData)),
+	    (unsigned long) (codePtr->numLitObjects * sizeof(Tcl_Obj *)),
+	    (unsigned long) (codePtr->numExceptRanges*sizeof(ExceptionRange)),
+	    (unsigned long) (codePtr->numAuxDataItems * sizeof(AuxData)),
 	    codePtr->numCmdLocBytes);
 #endif /* TCL_COMPILE_STATS */
     if (procPtr != NULL) {
 	fprintf(stdout,
-		"  Proc 0x%x, refCt %d, args %d, compiled locals %d\n",
-		(unsigned int) procPtr, procPtr->refCount,
-		procPtr->numArgs, procPtr->numCompiledLocals);
+		"  Proc 0x%p, refCt %d, args %d, compiled locals %d\n",
+		procPtr, procPtr->refCount, procPtr->numArgs,
+		procPtr->numCompiledLocals);
     }
 }
 #endif /* TCL_COMPILE_DEBUG */
@@ -4591,60 +7617,63 @@ PrintByteCodeInfo(codePtr)
  *	None.
  *
  * Side effects:
- *	Prints a message to stderr and panics if either the pc or stack
- *	top are invalid.
+ *	Prints a message to stderr and panics if either the pc or stack top
+ *	are invalid.
  *
  *----------------------------------------------------------------------
  */
 
 #ifdef TCL_COMPILE_DEBUG
 static void
-ValidatePcAndStackTop(codePtr, pc, stackTop, stackLowerBound)
-    register ByteCode *codePtr; /* The bytecode whose summary is printed
-				 * to stdout. */
-    unsigned char *pc;		/* Points to first byte of a bytecode
+ValidatePcAndStackTop(
+    register ByteCode *codePtr,	/* The bytecode whose summary is printed to
+				 * stdout. */
+    unsigned char *pc,		/* Points to first byte of a bytecode
 				 * instruction. The program counter. */
-    int stackTop;		/* Current stack top. Must be between
+    int stackTop,		/* Current stack top. Must be between
 				 * stackLowerBound and stackUpperBound
 				 * (inclusive). */
-    int stackLowerBound;	/* Smallest legal value for stackTop. */
+    int stackLowerBound,	/* Smallest legal value for stackTop. */
+    int checkStack)		/* 0 if the stack depth check should be
+				 * skipped. */
 {
-    int stackUpperBound = stackLowerBound +  codePtr->maxStackDepth;	
-                                /* Greatest legal value for stackTop. */
-    unsigned int relativePc = (unsigned int) (pc - codePtr->codeStart);
-    unsigned int codeStart = (unsigned int) codePtr->codeStart;
-    unsigned int codeEnd = (unsigned int)
+    int stackUpperBound = stackLowerBound + codePtr->maxStackDepth;
+				/* Greatest legal value for stackTop. */
+    unsigned relativePc = (unsigned) (pc - codePtr->codeStart);
+    unsigned long codeStart = (unsigned long) codePtr->codeStart;
+    unsigned long codeEnd = (unsigned long)
 	    (codePtr->codeStart + codePtr->numCodeBytes);
     unsigned char opCode = *pc;
 
-    if (((unsigned int) pc < codeStart) || ((unsigned int) pc > codeEnd)) {
-	fprintf(stderr, "\nBad instruction pc 0x%x in TclExecuteByteCode\n",
-		(unsigned int) pc);
-	panic("TclExecuteByteCode execution failure: bad pc");
+    if (((unsigned long) pc < codeStart) || ((unsigned long) pc > codeEnd)) {
+	fprintf(stderr, "\nBad instruction pc 0x%p in TclExecuteByteCode\n",
+		pc);
+	Tcl_Panic("TclExecuteByteCode execution failure: bad pc");
     }
-    if ((unsigned int) opCode > LAST_INST_OPCODE) {
+    if ((unsigned) opCode > LAST_INST_OPCODE) {
 	fprintf(stderr, "\nBad opcode %d at pc %u in TclExecuteByteCode\n",
-		(unsigned int) opCode, relativePc);
-        panic("TclExecuteByteCode execution failure: bad opcode");
+		(unsigned) opCode, relativePc);
+	Tcl_Panic("TclExecuteByteCode execution failure: bad opcode");
     }
-    if ((stackTop < stackLowerBound) || (stackTop > stackUpperBound)) {
+    if (checkStack &&
+	    ((stackTop < stackLowerBound) || (stackTop > stackUpperBound))) {
 	int numChars;
-	char *cmd = GetSrcInfoForPc(pc, codePtr, &numChars);
-	char *ellipsis = "";
-	
+	const char *cmd = GetSrcInfoForPc(pc, codePtr, &numChars);
+
 	fprintf(stderr, "\nBad stack top %d at pc %u in TclExecuteByteCode (min %i, max %i)",
 		stackTop, relativePc, stackLowerBound, stackUpperBound);
 	if (cmd != NULL) {
-	    if (numChars > 100) {
-		numChars = 100;
-		ellipsis = "...";
-	    }
-	    fprintf(stderr, "\n executing %.*s%s\n", numChars, cmd,
-		    ellipsis);
+	    Tcl_Obj *message;
+
+	    TclNewLiteralStringObj(message, "\n executing ");
+	    Tcl_IncrRefCount(message);
+	    Tcl_AppendLimitedToObj(message, cmd, numChars, 100, NULL);
+	    fprintf(stderr,"%s\n", Tcl_GetString(message));
+	    Tcl_DecrRefCount(message);
 	} else {
 	    fprintf(stderr, "\n");
 	}
-	panic("TclExecuteByteCode execution failure: bad stack top");
+	Tcl_Panic("TclExecuteByteCode execution failure: bad stack top");
     }
 }
 #endif /* TCL_COMPILE_DEBUG */
@@ -4654,142 +7683,66 @@ ValidatePcAndStackTop(codePtr, pc, stackTop, stackLowerBound)
  *
  * IllegalExprOperandType --
  *
- *	Used by TclExecuteByteCode to add an error message to errorInfo
- *	when an illegal operand type is detected by an expression
+ *	Used by TclExecuteByteCode to append an error message to the interp
+ *	result when an illegal operand type is detected by an expression
  *	instruction. The argument opndPtr holds the operand object in error.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	An error message is appended to errorInfo.
+ *	An error message is appended to the interp result.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-IllegalExprOperandType(interp, pc, opndPtr)
-    Tcl_Interp *interp;		/* Interpreter to which error information
+IllegalExprOperandType(
+    Tcl_Interp *interp,		/* Interpreter to which error information
 				 * pertains. */
-    unsigned char *pc;		/* Points to the instruction being executed
+    unsigned char *pc,		/* Points to the instruction being executed
 				 * when the illegal type was found. */
-    Tcl_Obj *opndPtr;		/* Points to the operand holding the value
+    Tcl_Obj *opndPtr)		/* Points to the operand holding the value
 				 * with the illegal type. */
 {
-    unsigned char opCode = *pc;
-    
-    Tcl_ResetResult(interp);
-    if ((opndPtr->bytes == NULL) || (opndPtr->length == 0)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"can't use empty string as operand of \"",
-		operatorStrings[opCode - INST_LOR], "\"", (char *) NULL);
-    } else {
-	char *msg = "non-numeric string";
-	char *s, *p;
-	int length;
-	int looksLikeInt = 0;
+    ClientData ptr;
+    int type;
+    unsigned char opcode = *pc;
+    const char *description, *operator = operatorStrings[opcode - INST_LOR];
 
-	s = Tcl_GetStringFromObj(opndPtr, &length);
-	p = s;
-	/*
-	 * strtod() isn't at all consistent about detecting Inf and
-	 * NaN between platforms.
-	 */
-	if (length == 3) {
-	    if ((s[0]=='n' || s[0]=='N') && (s[1]=='a' || s[1]=='A') &&
-		    (s[2]=='n' || s[2]=='N')) {
-		msg = "non-numeric floating-point value";
-		goto makeErrorMessage;
-	    }
-	    if ((s[0]=='i' || s[0]=='I') && (s[1]=='n' || s[1]=='N') &&
-		    (s[2]=='f' || s[2]=='F')) {
-		msg = "infinite floating-point value";
-		goto makeErrorMessage;
-	    }
-	}
+    if (opcode == INST_EXPON) {
+	operator = "**";
+    }
 
-	/*
-	 * We cannot use TclLooksLikeInt here because it passes strings
-	 * like "10;" [Bug 587140]. We'll accept as "looking like ints"
-	 * for the present purposes any string that looks formally like
-	 * a (decimal|octal|hex) integer.
-	 */
+    if (GetNumberFromObj(NULL, opndPtr, &ptr, &type) != TCL_OK) {
+	int numBytes;
+	const char *bytes = Tcl_GetStringFromObj(opndPtr, &numBytes);
 
-	while (length && isspace(UCHAR(*p))) {
-	    length--;
-	    p++;
-	}
-	if (length && ((*p == '+') || (*p == '-'))) {
-	    length--;
-	    p++;
-	}
-	if (length) {
-	    if ((*p == '0') && ((*(p+1) == 'x') || (*(p+1) == 'X'))) {
-		p += 2;
-		length -= 2;
-		looksLikeInt = ((length > 0) && isxdigit(UCHAR(*p)));
-		if (looksLikeInt) {
-		    length--;
-		    p++;
-		    while (length && isxdigit(UCHAR(*p))) {
-			length--;
-			p++;
-		    }
-		}
-	    } else {
-		looksLikeInt = (length && isdigit(UCHAR(*p)));
-		if (looksLikeInt) {
-		    length--;
-		    p++;
-		    while (length && isdigit(UCHAR(*p))) {
-			length--;
-			p++;
-		    }
-		}
-	    }
-	    while (length && isspace(UCHAR(*p))) {
-		length--;
-		p++;
-	    }
-	    looksLikeInt = !length;
-	}
-	if (looksLikeInt) {
-	    /*
-	     * If something that looks like an integer could not be
-	     * converted, then it *must* be a bad octal or too large
-	     * to represent [Bug 542588].
-	     */
-
-	    if (TclCheckBadOctal(NULL, s)) {
-		msg = "invalid octal number";
-	    } else {
-		msg = "integer value too large to represent";
-		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-		    "integer value too large to represent", (char *) NULL);
-	    }
+	if (numBytes == 0) {
+	    description = "empty string";
+	} else if (TclCheckBadOctal(NULL, bytes)) {
+	    description = "invalid octal number";
 	} else {
-	    /*
-	     * See if the operand can be interpreted as a double in
-	     * order to improve the error message.
-	     */
-
-	    double d;
-
-	    if (Tcl_GetDouble((Tcl_Interp *) NULL, s, &d) == TCL_OK) {
-		msg = "floating-point value";
-	    }
+	    description = "non-numeric string";
 	}
-      makeErrorMessage:
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "can't use ",
-		msg, " as operand of \"", operatorStrings[opCode - INST_LOR],
-		"\"", (char *) NULL);
+    } else if (type == TCL_NUMBER_NAN) {
+	description = "non-numeric floating-point value";
+    } else if (type == TCL_NUMBER_DOUBLE) {
+	description = "floating-point value";
+    } else {
+	/* TODO: No caller needs this. Eliminate? */
+	description = "(big) integer";
     }
+
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+	    "can't use %s as operand of \"%s\"", description, operator));
+    Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", description, NULL);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclGetSrcInfoForPc, GetSrcInfoForPc --
+ * TclGetSrcInfoForPc, GetSrcInfoForPc, TclGetSrcInfoForCmd --
  *
  *	Given a program counter value, finds the closest command in the
  *	bytecode code unit's CmdLocation array and returns information about
@@ -4799,85 +7752,98 @@ IllegalExprOperandType(interp, pc, opndPtr)
  * Results:
  *	If a command is found that encloses the program counter value, a
  *	pointer to the command's source is returned and the length of the
- *	source is stored at *lengthPtr. If multiple commands resulted in
- *	code at pc, information about the closest enclosing command is
- *	returned. If no matching command is found, NULL is returned and
- *	*lengthPtr is unchanged.
+ *	source is stored at *lengthPtr. If multiple commands resulted in code
+ *	at pc, information about the closest enclosing command is returned. If
+ *	no matching command is found, NULL is returned and *lengthPtr is
+ *	unchanged.
  *
  * Side effects:
- *	None.
+ *	The CmdFrame at *cfPtr is updated.
  *
  *----------------------------------------------------------------------
  */
 
-#ifdef TCL_TIP280
+const char *
+TclGetSrcInfoForCmd(
+    Interp *iPtr,
+    int *lenPtr)
+{
+    CmdFrame *cfPtr = iPtr->cmdFramePtr;
+    ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr;
+
+    return GetSrcInfoForPc((unsigned char *) cfPtr->data.tebc.pc,
+	    codePtr, lenPtr);
+}
+
 void
-TclGetSrcInfoForPc (cfPtr)
-     CmdFrame* cfPtr;
+TclGetSrcInfoForPc(
+    CmdFrame *cfPtr)
 {
-    ByteCode* codePtr = (ByteCode*) cfPtr->data.tebc.codePtr;
+    ByteCode *codePtr = (ByteCode *) cfPtr->data.tebc.codePtr;
 
     if (cfPtr->cmd.str.cmd == NULL) {
-        cfPtr->cmd.str.cmd = GetSrcInfoForPc((unsigned char*) cfPtr->data.tebc.pc,
-					     codePtr,
-					     &cfPtr->cmd.str.len);
+	cfPtr->cmd.str.cmd = GetSrcInfoForPc(
+		(unsigned char *) cfPtr->data.tebc.pc, codePtr,
+		&cfPtr->cmd.str.len);
     }
 
     if (cfPtr->cmd.str.cmd != NULL) {
-        /* We now have the command. We can get the srcOffset back and
-	 * from there find the list of word locations for this command
+	/*
+	 * We now have the command. We can get the srcOffset back and from
+	 * there find the list of word locations for this command.
 	 */
 
-	ExtCmdLoc*     eclPtr;
-	ECL*           locPtr = NULL;
-	int            srcOffset;
+	ExtCmdLoc *eclPtr;
+	ECL *locPtr = NULL;
+	int srcOffset, i;
+	Interp *iPtr = (Interp *) *codePtr->interpHandle;
+	Tcl_HashEntry *hePtr =
+		Tcl_FindHashEntry(iPtr->lineBCPtr, (char *) codePtr);
 
-        Interp*        iPtr  = (Interp*) *codePtr->interpHandle;
-	Tcl_HashEntry* hePtr = Tcl_FindHashEntry (iPtr->lineBCPtr, (char *) codePtr);
-
-	if (!hePtr) return;
+	if (!hePtr) {
+	    return;
+	}
 
 	srcOffset = cfPtr->cmd.str.cmd - codePtr->source;
-	eclPtr    = (ExtCmdLoc*) Tcl_GetHashValue (hePtr);
+	eclPtr = (ExtCmdLoc *) Tcl_GetHashValue (hePtr);
 
-	{
-	    int i;
-	    for (i=0; i < eclPtr->nuloc; i++) {
-		if (eclPtr->loc [i].srcOffset == srcOffset) {
-		    locPtr = &(eclPtr->loc [i]);
-		    break;
-		}
+	for (i=0; i < eclPtr->nuloc; i++) {
+	    if (eclPtr->loc[i].srcOffset == srcOffset) {
+		locPtr = eclPtr->loc+i;
+		break;
 	    }
 	}
+	if (locPtr == NULL) {
+	    Tcl_Panic("LocSearch failure");
+	}
 
-	if (locPtr == NULL) {Tcl_Panic ("LocSearch failure");}
-
-	cfPtr->line           = locPtr->line;
-	cfPtr->nline          = locPtr->nline;
-	cfPtr->type           = eclPtr->type;
+	cfPtr->line = locPtr->line;
+	cfPtr->nline = locPtr->nline;
+	cfPtr->type = eclPtr->type;
 
 	if (eclPtr->type == TCL_LOCATION_SOURCE) {
 	    cfPtr->data.eval.path = eclPtr->path;
-	    Tcl_IncrRefCount (cfPtr->data.eval.path);
+	    Tcl_IncrRefCount(cfPtr->data.eval.path);
 	}
-	/* Do not set cfPtr->data.eval.path NULL for non-SOURCE
-	 * Needed for cfPtr->data.tebc.codePtr.
+
+	/*
+	 * Do not set cfPtr->data.eval.path NULL for non-SOURCE. Needed for
+	 * cfPtr->data.tebc.codePtr.
 	 */
     }
 }
-#endif
 
-static char *
-GetSrcInfoForPc(pc, codePtr, lengthPtr)
-    unsigned char *pc;		/* The program counter value for which to
+static const char *
+GetSrcInfoForPc(
+    unsigned char *pc,		/* The program counter value for which to
 				 * return the closest command's source info.
-				 * This points to a bytecode instruction
-				 * in codePtr's code. */
-    ByteCode *codePtr;		/* The bytecode sequence in which to look
-				 * up the command source for the pc. */
-    int *lengthPtr;		/* If non-NULL, the location where the
-				 * length of the command's source should be
-				 * stored. If NULL, no length is stored. */
+				 * This points to a bytecode instruction in
+				 * codePtr's code. */
+    ByteCode *codePtr,		/* The bytecode sequence in which to look up
+				 * the command source for the pc. */
+    int *lengthPtr)		/* If non-NULL, the location where the length
+				 * of the command's source should be stored.
+				 * If NULL, no length is stored. */
 {
     register int pcOffset = (pc - codePtr->codeStart);
     int numCmds = codePtr->numCommands;
@@ -4900,11 +7866,11 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
 
     codeDeltaNext = codePtr->codeDeltaStart;
     codeLengthNext = codePtr->codeLengthStart;
-    srcDeltaNext  = codePtr->srcDeltaStart;
+    srcDeltaNext = codePtr->srcDeltaStart;
     srcLengthNext = codePtr->srcLengthStart;
     codeOffset = srcOffset = 0;
     for (i = 0;  i < numCmds;  i++) {
-	if ((unsigned int) (*codeDeltaNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *codeDeltaNext == (unsigned) 0xFF) {
 	    codeDeltaNext++;
 	    delta = TclGetInt4AtPtr(codeDeltaNext);
 	    codeDeltaNext += 4;
@@ -4914,7 +7880,7 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
 	}
 	codeOffset += delta;
 
-	if ((unsigned int) (*codeLengthNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *codeLengthNext == (unsigned) 0xFF) {
 	    codeLengthNext++;
 	    codeLen = TclGetInt4AtPtr(codeLengthNext);
 	    codeLengthNext += 4;
@@ -4924,7 +7890,7 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
 	}
 	codeEnd = (codeOffset + codeLen - 1);
 
-	if ((unsigned int) (*srcDeltaNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *srcDeltaNext == (unsigned) 0xFF) {
 	    srcDeltaNext++;
 	    delta = TclGetInt4AtPtr(srcDeltaNext);
 	    srcDeltaNext += 4;
@@ -4934,7 +7900,7 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
 	}
 	srcOffset += delta;
 
-	if ((unsigned int) (*srcLengthNext) == (unsigned int) 0xFF) {
+	if ((unsigned) *srcLengthNext == (unsigned) 0xFF) {
 	    srcLengthNext++;
 	    srcLen = TclGetInt4AtPtr(srcLengthNext);
 	    srcLengthNext += 4;
@@ -4942,11 +7908,13 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
 	    srcLen = TclGetInt1AtPtr(srcLengthNext);
 	    srcLengthNext++;
 	}
-	
-	if (codeOffset > pcOffset) {      /* best cmd already found */
+
+	if (codeOffset > pcOffset) {	/* Best cmd already found */
 	    break;
-	} else if (pcOffset <= codeEnd) { /* this cmd's code encloses pc */
+	}
+	if (pcOffset <= codeEnd) {	/* This cmd's code encloses pc */
 	    int dist = (pcOffset - codeOffset);
+
 	    if (dist <= bestDist) {
 		bestDist = dist;
 		bestSrcOffset = srcOffset;
@@ -4958,7 +7926,7 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
     if (bestDist == INT_MAX) {
 	return NULL;
     }
-    
+
     if (lengthPtr != NULL) {
 	*lengthPtr = bestSrcLength;
     }
@@ -4974,15 +7942,14 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
  *	ExceptionRange.
  *
  * Results:
- *	In the normal case, catchOnly is 0 (false) and this procedure
- *	returns a pointer to the most closely enclosing ExceptionRange
- *	structure regardless of whether it is a loop or catch exception
- *	range. This is appropriate when processing a TCL_BREAK or
- *	TCL_CONTINUE, which will be "handled" either by a loop exception
- *	range or a closer catch range. If catchOnly is nonzero, this
- *	procedure ignores loop exception ranges and returns a pointer to the
- *	closest catch range. If no matching ExceptionRange is found that
- *	encloses pc, a NULL is returned.
+ *	In the normal case, catchOnly is 0 (false) and this procedure returns
+ *	a pointer to the most closely enclosing ExceptionRange structure
+ *	regardless of whether it is a loop or catch exception range. This is
+ *	appropriate when processing a TCL_BREAK or TCL_CONTINUE, which will be
+ *	"handled" either by a loop exception range or a closer catch range. If
+ *	catchOnly is nonzero, this procedure ignores loop exception ranges and
+ *	returns a pointer to the closest catch range. If no matching
+ *	ExceptionRange is found that encloses pc, a NULL is returned.
  *
  * Side effects:
  *	None.
@@ -4991,33 +7958,32 @@ GetSrcInfoForPc(pc, codePtr, lengthPtr)
  */
 
 static ExceptionRange *
-GetExceptRangeForPc(pc, catchOnly, codePtr)
-    unsigned char *pc;		/* The program counter value for which to
+GetExceptRangeForPc(
+    unsigned char *pc,		/* The program counter value for which to
 				 * search for a closest enclosing exception
 				 * range. This points to a bytecode
 				 * instruction in codePtr's code. */
-    int catchOnly;		/* If 0, consider either loop or catch
+    int catchOnly,		/* If 0, consider either loop or catch
 				 * ExceptionRanges in search. If nonzero
-				 * consider only catch ranges (and ignore
-				 * any closer loop ranges). */
-    ByteCode* codePtr;		/* Points to the ByteCode in which to search
+				 * consider only catch ranges (and ignore any
+				 * closer loop ranges). */
+    ByteCode *codePtr)		/* Points to the ByteCode in which to search
 				 * for the enclosing ExceptionRange. */
 {
     ExceptionRange *rangeArrayPtr;
     int numRanges = codePtr->numExceptRanges;
     register ExceptionRange *rangePtr;
-    int pcOffset = (pc - codePtr->codeStart);
+    int pcOffset = pc - codePtr->codeStart;
     register int start;
 
     if (numRanges == 0) {
 	return NULL;
     }
 
-    /* 
-     * This exploits peculiarities of our compiler: nested ranges
-     * are always *after* their containing ranges, so that by scanning
-     * backwards we are sure that the first matching range is indeed
-     * the deepest.
+    /*
+     * This exploits peculiarities of our compiler: nested ranges are always
+     * *after* their containing ranges, so that by scanning backwards we are
+     * sure that the first matching range is indeed the deepest.
      */
 
     rangeArrayPtr = codePtr->exceptArrayPtr;
@@ -5025,7 +7991,7 @@ GetExceptRangeForPc(pc, catchOnly, codePtr)
     while (--rangePtr >= rangeArrayPtr) {
 	start = rangePtr->codeOffset;
 	if ((start <= pcOffset) &&
-	        (pcOffset < (start + rangePtr->numCodeBytes))) {
+		(pcOffset < (start + rangePtr->numCodeBytes))) {
 	    if ((!catchOnly)
 		    || (rangePtr->type == CATCH_EXCEPTION_RANGE)) {
 		return rangePtr;
@@ -5040,9 +8006,9 @@ GetExceptRangeForPc(pc, catchOnly, codePtr)
  *
  * GetOpcodeName --
  *
- *	This procedure is called by the TRACE and TRACE_WITH_OBJ macros
- *	used in TclExecuteByteCode when debugging. It returns the name of
- *	the bytecode instruction at a specified instruction pc.
+ *	This procedure is called by the TRACE and TRACE_WITH_OBJ macros used
+ *	in TclExecuteByteCode when debugging. It returns the name of the
+ *	bytecode instruction at a specified instruction pc.
  *
  * Results:
  *	A character string for the instruction.
@@ -5055,12 +8021,12 @@ GetExceptRangeForPc(pc, catchOnly, codePtr)
 
 #ifdef TCL_COMPILE_DEBUG
 static char *
-GetOpcodeName(pc)
-    unsigned char *pc;		/* Points to the instruction whose name
-				 * should be returned. */
+GetOpcodeName(
+    unsigned char *pc)		/* Points to the instruction whose name should
+				 * be returned. */
 {
     unsigned char opCode = *pc;
-    
+
     return tclInstructionTable[opCode].name;
 }
 #endif /* TCL_COMPILE_DEBUG */
@@ -5068,991 +8034,10 @@ GetOpcodeName(pc)
 /*
  *----------------------------------------------------------------------
  *
- * VerifyExprObjType --
- *
- *	This procedure is called by the math functions to verify that
- *	the object is either an int or double, coercing it if necessary.
- *	If an error occurs during conversion, an error message is left
- *	in the interpreter's result unless "interp" is NULL.
- *
- * Results:
- *	TCL_OK if it was int or double, TCL_ERROR otherwise
- *
- * Side effects:
- *	objPtr is ensured to be of tclIntType, tclWideIntType or
- *	tclDoubleType.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-VerifyExprObjType(interp, objPtr)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    Tcl_Obj *objPtr;		/* Points to the object to type check. */
-{
-    if (IS_NUMERIC_TYPE(objPtr->typePtr)) {
-	return TCL_OK;
-    } else {
-	int length, result = TCL_OK;
-	char *s = Tcl_GetStringFromObj(objPtr, &length);
-	
-	if (TclLooksLikeInt(s, length)) {
-	    long i;
-	    Tcl_WideInt w;
-	    GET_WIDE_OR_INT(result, objPtr, i, w);
-	    /* Quiet cranky old compilers that complain about
-	     * setting i, but not using it. */
-	   (void)i;
-	} else {
-	    double d;
-	    result = Tcl_GetDoubleFromObj((Tcl_Interp *) NULL, objPtr, &d);
-	}
-	if ((result != TCL_OK) && (interp != NULL)) {
-	    Tcl_ResetResult(interp);
-	    if (TclCheckBadOctal((Tcl_Interp *) NULL, s)) {
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-			"argument to math function was an invalid octal number",
-			-1);
-	    } else {
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-			"argument to math function didn't have numeric value",
-			-1);
-	    }
-	}
-	return result;
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Math Functions --
- *
- *	This page contains the procedures that implement all of the
- *	built-in math functions for expressions.
- *
- * Results:
- *	Each procedure returns TCL_OK if it succeeds and pushes an
- *	Tcl object holding the result. If it fails it returns TCL_ERROR
- *	and leaves an error message in the interpreter's result.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ExprUnaryFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Contains the address of a procedure that
-				 * takes one double argument and returns a
-				 * double result. */
-{
-    Tcl_Obj **stackPtr;		/* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    register Tcl_Obj *valuePtr;
-    double d, dResult;
-    int result;
-    
-    double (*func) _ANSI_ARGS_((double)) =
-	(double (*)_ANSI_ARGS_((double))) clientData;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the function's argument from the evaluation stack. Convert it
-     * to a double if necessary.
-     */
-
-    valuePtr = POP_OBJECT();
-
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    GET_DOUBLE_VALUE(d, valuePtr, valuePtr->typePtr);
-
-    errno = 0;
-    dResult = (*func)(d);
-    if ((errno != 0) || IS_NAN(dResult) || IS_INF(dResult)) {
-	TclExprFloatError(interp, dResult);
-	result = TCL_ERROR;
-	goto done;
-    }
-    
-    /*
-     * Push a Tcl object holding the result.
-     */
-
-    PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
-    
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-static int
-ExprBinaryFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Contains the address of a procedure that
-				 * takes two double arguments and
-				 * returns a double result. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    register Tcl_Obj *valuePtr, *value2Ptr;
-    double d1, d2, dResult;
-    int result;
-    
-    double (*func) _ANSI_ARGS_((double, double))
-	= (double (*)_ANSI_ARGS_((double, double))) clientData;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the function's two arguments from the evaluation stack. Convert
-     * them to doubles if necessary.
-     */
-
-    value2Ptr = POP_OBJECT();
-    valuePtr  = POP_OBJECT();
-
-    if ((VerifyExprObjType(interp, valuePtr) != TCL_OK) ||
-	    (VerifyExprObjType(interp, value2Ptr) != TCL_OK)) {
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    GET_DOUBLE_VALUE(d1, valuePtr, valuePtr->typePtr);
-    GET_DOUBLE_VALUE(d2, value2Ptr, value2Ptr->typePtr);
-
-    errno = 0;
-    dResult = (*func)(d1, d2);
-    if ((errno != 0) || IS_NAN(dResult) || IS_INF(dResult)) {
-	TclExprFloatError(interp, dResult);
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    /*
-     * Push a Tcl object holding the result.
-     */
-
-    PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
-    
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    TclDecrRefCount(valuePtr);
-    TclDecrRefCount(value2Ptr);
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-static int
-ExprAbsFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    register Tcl_Obj *valuePtr;
-    long i, iResult;
-    double d, dResult;
-    int result;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the argument from the evaluation stack.
-     */
-
-    valuePtr = POP_OBJECT();
-
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    /*
-     * Push a Tcl object with the result.
-     */
-    if (valuePtr->typePtr == &tclIntType) {
-	i = valuePtr->internalRep.longValue;
-	if (i < 0) {
-	    if (i == LONG_MIN) {
-#ifdef TCL_WIDE_INT_IS_LONG
-		Tcl_SetObjResult(interp, Tcl_NewStringObj(
-			"integer value too large to represent", -1));
-		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-			"integer value too large to represent", (char *) NULL);
-		result = TCL_ERROR;
-		goto done;
-#else 
-		/*
-		 * Special case: abs(MIN_INT) must promote to wide.
-		 */
-
-		PUSH_OBJECT( Tcl_NewWideIntObj(-(Tcl_WideInt) i) );
-		result = TCL_OK;
-		goto done;
-#endif
-
-	    }
-	    iResult = -i;
-	} else {
-	    iResult = i;
-	}	    
-	PUSH_OBJECT(Tcl_NewLongObj(iResult));
-    } else if (valuePtr->typePtr == &tclWideIntType) {
-	Tcl_WideInt wResult, w;
-	TclGetWide(w,valuePtr);
-	if (w < W0) {
-	    wResult = -w;
-	    if (wResult < 0) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		        "integer value too large to represent", -1);
-		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-			"integer value too large to represent", (char *) NULL);
-		result = TCL_ERROR;
-		goto done;
-	    }
-	} else {
-	    wResult = w;
-	}	    
-	PUSH_OBJECT(Tcl_NewWideIntObj(wResult));
-    } else {
-	d = valuePtr->internalRep.doubleValue;
-	if (d < 0.0) {
-	    dResult = -d;
-        } else if (d == -0.0) {
-            /* We need to distinguish here between positive 0.0 and
-             * negative -0.0, see Bug ID #2954959.
-             */
-            static const double poszero = 0.0;
-            if (memcmp(&d, &poszero, sizeof(double))) {
-                dResult = -d;
-            } else {
-                dResult = d;
-            }
-	} else {
-	    dResult = d;
-	}
-	if (IS_NAN(dResult) || IS_INF(dResult)) {
-	    TclExprFloatError(interp, dResult);
-	    result = TCL_ERROR;
-	    goto done;
-	}
-	PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
-    }
-
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-static int
-ExprDoubleFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    register Tcl_Obj *valuePtr;
-    double dResult;
-    int result;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the argument from the evaluation stack.
-     */
-
-    valuePtr = POP_OBJECT();
-
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    GET_DOUBLE_VALUE(dResult, valuePtr, valuePtr->typePtr);
-
-    /*
-     * Push a Tcl object with the result.
-     */
-
-    PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
-
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-static int
-ExprIntFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    register Tcl_Obj *valuePtr;
-    long iResult;
-    double d;
-    int result;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the argument from the evaluation stack.
-     */
-
-    valuePtr = POP_OBJECT();
-    
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	result = TCL_ERROR;
-	goto done;
-    }
-    
-    if (valuePtr->typePtr == &tclIntType) {
-	iResult = valuePtr->internalRep.longValue;
-    } else if (valuePtr->typePtr == &tclWideIntType) {
-	TclGetLongFromWide(iResult,valuePtr);
-    } else {
-	d = valuePtr->internalRep.doubleValue;
-	if (d < 0.0) {
-	    if (d < (double) (long) LONG_MIN) {
-		tooLarge:
-		Tcl_ResetResult(interp);
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		        "integer value too large to represent", -1);
-		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-			"integer value too large to represent", (char *) NULL);
-		result = TCL_ERROR;
-		goto done;
-	    }
-	} else {
-	    if (d > (double) LONG_MAX) {
-		goto tooLarge;
-	    }
-	}
-	if (IS_NAN(d) || IS_INF(d)) {
-	    TclExprFloatError(interp, d);
-	    result = TCL_ERROR;
-	    goto done;
-	}
-	iResult = (long) d;
-    }
-
-    /*
-     * Push a Tcl object with the result.
-     */
-    
-    PUSH_OBJECT(Tcl_NewLongObj(iResult));
-
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-static int
-ExprWideFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    register Tcl_Obj *valuePtr;
-    Tcl_WideInt wResult;
-    double d;
-    int result;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the argument from the evaluation stack.
-     */
-
-    valuePtr = POP_OBJECT();
-    
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	result = TCL_ERROR;
-	goto done;
-    }
-    
-    if (valuePtr->typePtr == &tclWideIntType) {
-	TclGetWide(wResult,valuePtr);
-    } else if (valuePtr->typePtr == &tclIntType) {
-	wResult = Tcl_LongAsWide(valuePtr->internalRep.longValue);
-    } else {
-	d = valuePtr->internalRep.doubleValue;
-	if (d < 0.0) {
-	    if (d < Tcl_WideAsDouble(LLONG_MIN)) {
-		tooLarge:
-		Tcl_ResetResult(interp);
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		        "integer value too large to represent", -1);
-		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-			"integer value too large to represent", (char *) NULL);
-		result = TCL_ERROR;
-		goto done;
-	    }
-	} else {
-	    if (d > Tcl_WideAsDouble(LLONG_MAX)) {
-		goto tooLarge;
-	    }
-	}
-	if (IS_NAN(d) || IS_INF(d)) {
-	    TclExprFloatError(interp, d);
-	    result = TCL_ERROR;
-	    goto done;
-	}
-	wResult = Tcl_DoubleAsWide(d);
-    }
-
-    /*
-     * Push a Tcl object with the result.
-     */
-    
-    PUSH_OBJECT(Tcl_NewWideIntObj(wResult));
-
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-static int
-ExprRandFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    Interp *iPtr = (Interp *) interp;
-    double dResult;
-    long tmp;			/* Algorithm assumes at least 32 bits.
-				 * Only long guarantees that.  See below. */
-
-    if (!(iPtr->flags & RAND_SEED_INITIALIZED)) {
-	iPtr->flags |= RAND_SEED_INITIALIZED;
-        
-        /* 
-	 * Take into consideration the thread this interp is running in order
-	 * to insure different seeds in different threads (bug #416643)
-	 */
-
-	iPtr->randSeed = TclpGetClicks() + ((long)Tcl_GetCurrentThread()<<12);
-
-	/*
-	 * Make sure 1 <= randSeed <= (2^31) - 2.  See below.
-	 */
-
-        iPtr->randSeed &= (unsigned long) 0x7fffffff;
-	if ((iPtr->randSeed == 0) || (iPtr->randSeed == 0x7fffffff)) {
-	    iPtr->randSeed ^= 123459876;
-	}
-    }
-    
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-    
-    CACHE_STACK_INFO();
-
-    /*
-     * Generate the random number using the linear congruential
-     * generator defined by the following recurrence:
-     *		seed = ( IA * seed ) mod IM
-     * where IA is 16807 and IM is (2^31) - 1.  The recurrence maps
-     * a seed in the range [1, IM - 1] to a new seed in that same range.
-     * The recurrence maps IM to 0, and maps 0 back to 0, so those two
-     * values must not be allowed as initial values of seed.
-     *
-     * In order to avoid potential problems with integer overflow, the
-     * recurrence is implemented in terms of additional constants
-     * IQ and IR such that
-     *		IM = IA*IQ + IR
-     * None of the operations in the implementation overflows a 32-bit
-     * signed integer, and the C type long is guaranteed to be at least
-     * 32 bits wide.
-     *
-     * For more details on how this algorithm works, refer to the following
-     * papers: 
-     *
-     *	S.K. Park & K.W. Miller, "Random number generators: good ones
-     *	are hard to find," Comm ACM 31(10):1192-1201, Oct 1988
-     *
-     *	W.H. Press & S.A. Teukolsky, "Portable random number
-     *	generators," Computers in Physics 6(5):522-524, Sep/Oct 1992.
-     */
-
-#define RAND_IA		16807
-#define RAND_IM		2147483647
-#define RAND_IQ		127773
-#define RAND_IR		2836
-#define RAND_MASK	123459876
-
-    tmp = iPtr->randSeed/RAND_IQ;
-    iPtr->randSeed = RAND_IA*(iPtr->randSeed - tmp*RAND_IQ) - RAND_IR*tmp;
-    if (iPtr->randSeed < 0) {
-	iPtr->randSeed += RAND_IM;
-    }
-
-    /*
-     * Since the recurrence keeps seed values in the range [1, RAND_IM - 1],
-     * dividing by RAND_IM yields a double in the range (0, 1).
-     */
-
-    dResult = iPtr->randSeed * (1.0/RAND_IM);
-
-    /*
-     * Push a Tcl object with the result.
-     */
-
-    PUSH_OBJECT(Tcl_NewDoubleObj(dResult));
-    
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    DECACHE_STACK_INFO();
-    return TCL_OK;
-}
-
-static int
-ExprRoundFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    Tcl_Obj *valuePtr, *resPtr;
-    double d, f, i;
-    int result;
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-
-    result = TCL_OK;
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the argument from the evaluation stack.
-     */
-
-    valuePtr = POP_OBJECT();
-
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    if ((valuePtr->typePtr == &tclIntType) ||
-	    (valuePtr->typePtr == &tclWideIntType)) {
-	result = TCL_OK;
-	resPtr = valuePtr;
-    } else {
-
-	/* 
-	 * Round the number to the nearest integer.  I'd like to use round(),
-	 * but it's C99 (or BSD), and not yet universal.
-	 */
-	
-	d = valuePtr->internalRep.doubleValue;
-	f = modf(d, &i);
-	if (d < 0.0) {
-	    if (f <= -0.5) {
-		i += -1.0;
-	    }
-	    if (i <= Tcl_WideAsDouble(LLONG_MIN)) {
-		goto tooLarge;
-	    } else if (i <= (double) LONG_MIN) {
-		resPtr = Tcl_NewWideIntObj(Tcl_DoubleAsWide(i));
-	    } else {
-		resPtr = Tcl_NewLongObj((long) i);
-	    }			    
-	} else {
-	    if (f >= 0.5) {
-		i += 1.0;
-	    }
-	    if (i >= Tcl_WideAsDouble(LLONG_MAX)) {
-		goto tooLarge;
-	    } else if (i >= (double) LONG_MAX) {
-		resPtr = Tcl_NewWideIntObj(Tcl_DoubleAsWide(i));
-	    } else {
-		resPtr = Tcl_NewLongObj((long) i);
-	    }
-	}
-    }
-
-    /*
-     * Push the result object and free the argument Tcl_Obj.
-     */
-
-    PUSH_OBJECT(resPtr);
-    
-    done:
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-    return result;
-
-    /*
-     * Error return: result cannot be represented as an integer.
-     */
-    
-    tooLarge:
-    Tcl_ResetResult(interp);
-    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-	    "integer value too large to represent", -1);
-    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-	    "integer value too large to represent",
-	    (char *) NULL);
-    result = TCL_ERROR;
-    goto done;
-}
-
-static int
-ExprSrandFunc(interp, eePtr, clientData)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    ClientData clientData;	/* Ignored. */
-{
-    Tcl_Obj **stackPtr;        /* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    Interp *iPtr = (Interp *) interp;
-    Tcl_Obj *valuePtr;
-    long i = 0;			/* Initialized to avoid compiler warning. */
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-    
-    CACHE_STACK_INFO();
-
-    /*
-     * Pop the argument from the evaluation stack.  Use the value
-     * to reset the random number seed.
-     */
-
-    valuePtr = POP_OBJECT();
-
-    if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	goto badValue;
-    }
-
-    if (Tcl_GetLongFromObj(NULL, valuePtr, &i) != TCL_OK) {
-	Tcl_WideInt w;
-
-	if (Tcl_GetWideIntFromObj(interp, valuePtr, &w) != TCL_OK) {
-	badValue:
-	    Tcl_AddErrorInfo(interp, "\n    (argument to \"srand()\")");
-	    TclDecrRefCount(valuePtr);
-	    DECACHE_STACK_INFO();
-	    return TCL_ERROR;
-	}
-
-	i = Tcl_WideAsLong(w);
-    }
-    
-    /*
-     * Reset the seed.  Make sure 1 <= randSeed <= 2^31 - 2.
-     * See comments in ExprRandFunc() for more details.
-     */
-
-    iPtr->flags |= RAND_SEED_INITIALIZED;
-    iPtr->randSeed = i;
-    iPtr->randSeed &= (unsigned long) 0x7fffffff;
-    if ((iPtr->randSeed == 0) || (iPtr->randSeed == 0x7fffffff)) {
-	iPtr->randSeed ^= 123459876;
-    }
-
-    /*
-     * To avoid duplicating the random number generation code we simply
-     * clean up our state and call the real random number function. That
-     * function will always succeed.
-     */
-    
-    TclDecrRefCount(valuePtr);
-    DECACHE_STACK_INFO();
-
-    ExprRandFunc(interp, eePtr, clientData);
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ExprCallMathFunc --
- *
- *	This procedure is invoked to call a non-builtin math function
- *	during the execution of an expression. 
- *
- * Results:
- *	TCL_OK is returned if all went well and the function's value
- *	was computed successfully. If an error occurred, TCL_ERROR
- *	is returned and an error message is left in the interpreter's
- *	result.	After a successful return this procedure pushes a Tcl object
- *	holding the result. 
- *
- * Side effects:
- *	None, unless the called math function has side effects.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ExprCallMathFunc(interp, eePtr, objc, objv)
-    Tcl_Interp *interp;		/* The interpreter in which to execute the
-				 * function. */
-    ExecEnv *eePtr;		/* Points to the environment for executing
-				 * the function. */
-    int objc;			/* Number of arguments. The function name is
-				 * the 0-th argument. */
-    Tcl_Obj **objv;		/* The array of arguments. The function name
-				 * is objv[0]. */
-{
-    Interp *iPtr = (Interp *) interp;
-    Tcl_Obj **stackPtr;		/* Cached evaluation stack base pointer. */
-    register int stackTop;	/* Cached top index of evaluation stack. */
-    char *funcName;
-    Tcl_HashEntry *hPtr;
-    MathFunc *mathFuncPtr;	/* Information about math function. */
-    Tcl_Value args[MAX_MATH_ARGS]; /* Arguments for function call. */
-    Tcl_Value funcResult;	/* Result of function call as Tcl_Value. */
-    register Tcl_Obj *valuePtr;
-    long i;
-    double d;
-    int j, k, result;
-
-    Tcl_ResetResult(interp);
-
-    /*
-     * Set stackPtr and stackTop from eePtr.
-     */
-    
-    CACHE_STACK_INFO();
-
-    /*
-     * Look up the MathFunc record for the function.
-     */
-
-    funcName = TclGetString(objv[0]);
-    hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, funcName);
-    if (hPtr == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"unknown math function \"", funcName, "\"", (char *) NULL);
-	result = TCL_ERROR;
-	goto done;
-    }
-    mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr);
-    if (mathFuncPtr->numArgs != (objc-1)) {
-	panic("ExprCallMathFunc: expected number of args %d != actual number %d",
-	        mathFuncPtr->numArgs, objc);
-	result = TCL_ERROR;
-	goto done;
-    }
-
-    /*
-     * Collect the arguments for the function, if there are any, into the
-     * array "args". Note that args[0] will have the Tcl_Value that
-     * corresponds to objv[1].
-     */
-
-    for (j = 1, k = 0;  j < objc;  j++, k++) {
-	valuePtr = objv[j];
-
-	if (VerifyExprObjType(interp, valuePtr) != TCL_OK) {
-	    result = TCL_ERROR;
-	    goto done;
-	}
-
-	/*
-	 * Copy the object's numeric value to the argument record,
-	 * converting it if necessary. 
-	 */
-
-	if (valuePtr->typePtr == &tclIntType) {
-	    i = valuePtr->internalRep.longValue;
-	    if (mathFuncPtr->argTypes[k] == TCL_DOUBLE) {
-		args[k].type = TCL_DOUBLE;
-		args[k].doubleValue = i;
-	    } else if (mathFuncPtr->argTypes[k] == TCL_WIDE_INT) {
-		args[k].type = TCL_WIDE_INT;
-		args[k].wideValue = Tcl_LongAsWide(i);
-	    } else {
-		args[k].type = TCL_INT;
-		args[k].intValue = i;
-	    }
-	} else if (valuePtr->typePtr == &tclWideIntType) {
-	    Tcl_WideInt w;
-	    TclGetWide(w,valuePtr);
-	    if (mathFuncPtr->argTypes[k] == TCL_DOUBLE) {
-		args[k].type = TCL_DOUBLE;
-		args[k].doubleValue = Tcl_WideAsDouble(w);
-	    } else if (mathFuncPtr->argTypes[k] == TCL_INT) {
-		args[k].type = TCL_INT;
-		args[k].intValue = Tcl_WideAsLong(w);
-	    } else {
-		args[k].type = TCL_WIDE_INT;
-		args[k].wideValue = w;
-	    }
-	} else {
-	    d = valuePtr->internalRep.doubleValue;
-	    if (mathFuncPtr->argTypes[k] == TCL_INT) {
-		args[k].type = TCL_INT;
-		args[k].intValue = (long) d;
-	    } else if (mathFuncPtr->argTypes[k] == TCL_WIDE_INT) {
-		args[k].type = TCL_WIDE_INT;
-		args[k].wideValue = Tcl_DoubleAsWide(d);
-	    } else {
-		args[k].type = TCL_DOUBLE;
-		args[k].doubleValue = d;
-	    }
-	}
-    }
-
-    /*
-     * Invoke the function and copy its result back into valuePtr.
-     */
-
-    result = (*mathFuncPtr->proc)(mathFuncPtr->clientData, interp, args,
-	    &funcResult);
-    if (result != TCL_OK) {
-	goto done;
-    }
-
-    /*
-     * Pop the objc top stack elements and decrement their ref counts.
-     */
-
-    k = (stackTop - (objc-1));
-    while (stackTop >= k) {
-	valuePtr = POP_OBJECT();
-	TclDecrRefCount(valuePtr);
-    }
-    
-    /*
-     * Push the call's object result.
-     */
-    
-    if (funcResult.type == TCL_INT) {
-	PUSH_OBJECT(Tcl_NewLongObj(funcResult.intValue));
-    } else if (funcResult.type == TCL_WIDE_INT) {
-	PUSH_OBJECT(Tcl_NewWideIntObj(funcResult.wideValue));
-    } else {
-	d = funcResult.doubleValue;
-	if (IS_NAN(d) || IS_INF(d)) {
-	    TclExprFloatError(interp, d);
-	    result = TCL_ERROR;
-	    goto done;
-	}
-	PUSH_OBJECT(Tcl_NewDoubleObj(d));
-    }
-
-    /*
-     * Reflect the change to stackTop back in eePtr.
-     */
-
-    done:
-    DECACHE_STACK_INFO();
-    return result;
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * TclExprFloatError --
  *
- *	This procedure is called when an error occurs during a
- *	floating-point operation. It reads errno and sets
- *	interp->objResultPtr accordingly.
+ *	This procedure is called when an error occurs during a floating-point
+ *	operation. It reads errno and sets interp->objResultPtr accordingly.
  *
  * Results:
  *	interp->objResultPtr is set to hold an error message.
@@ -6064,34 +8049,34 @@ ExprCallMathFunc(interp, eePtr, objc, objv)
  */
 
 void
-TclExprFloatError(interp, value)
-    Tcl_Interp *interp;		/* Where to store error message. */
-    double value;		/* Value returned after error;  used to
+TclExprFloatError(
+    Tcl_Interp *interp,		/* Where to store error message. */
+    double value)		/* Value returned after error; used to
 				 * distinguish underflows from overflows. */
 {
-    char *s;
+    const char *s;
 
-    Tcl_ResetResult(interp);
-    if ((errno == EDOM) || IS_NAN(value)) {
+    if ((errno == EDOM) || TclIsNaN(value)) {
 	s = "domain error: argument not in valid range";
-	Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
-	Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", s, (char *) NULL);
-    } else if ((errno == ERANGE) || IS_INF(value)) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
+	Tcl_SetErrorCode(interp, "ARITH", "DOMAIN", s, NULL);
+    } else if ((errno == ERANGE) || TclIsInfinite(value)) {
 	if (value == 0.0) {
 	    s = "floating-point value too small to represent";
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
-	    Tcl_SetErrorCode(interp, "ARITH", "UNDERFLOW", s, (char *) NULL);
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
+	    Tcl_SetErrorCode(interp, "ARITH", "UNDERFLOW", s, NULL);
 	} else {
 	    s = "floating-point value too large to represent";
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
-	    Tcl_SetErrorCode(interp, "ARITH", "OVERFLOW", s, (char *) NULL);
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
+	    Tcl_SetErrorCode(interp, "ARITH", "OVERFLOW", s, NULL);
 	}
     } else {
-	char msg[64 + TCL_INTEGER_SPACE];
-	
-	sprintf(msg, "unknown floating-point error, errno = %d", errno);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp), msg, -1);
-	Tcl_SetErrorCode(interp, "ARITH", "UNKNOWN", msg, (char *) NULL);
+	Tcl_Obj *objPtr = Tcl_ObjPrintf(
+		"unknown floating-point error, errno = %d", errno);
+
+	Tcl_SetErrorCode(interp, "ARITH", "UNKNOWN",
+		Tcl_GetString(objPtr), NULL);
+	Tcl_SetObjResult(interp, objPtr);
     }
 }
 
@@ -6105,8 +8090,8 @@ TclExprFloatError(interp, value)
  *	the log base 2 of an integer.
  *
  * Results:
- *	Returns the log base 2 of the operand. If the argument is less
- *	than or equal to zero, a zero is returned.
+ *	Returns the log base 2 of the operand. If the argument is less than or
+ *	equal to zero, a zero is returned.
  *
  * Side effects:
  *	None.
@@ -6115,9 +8100,9 @@ TclExprFloatError(interp, value)
  */
 
 int
-TclLog2(value)
-    register int value;		/* The integer for which to compute the
-				 * log base 2. */
+TclLog2(
+    register int value)		/* The integer for which to compute the log
+				 * base 2. */
 {
     register int n = value;
     register int result = 0;
@@ -6147,15 +8132,15 @@ TclLog2(value)
  */
 
 static int
-EvalStatsCmd(unused, interp, objc, objv)
-    ClientData unused;		/* Unused. */
-    Tcl_Interp *interp;		/* The current interpreter. */
-    int objc;			/* The number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument strings. */
+EvalStatsCmd(
+    ClientData unused,		/* Unused. */
+    Tcl_Interp *interp,		/* The current interpreter. */
+    int objc,			/* The number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument strings. */
 {
     Interp *iPtr = (Interp *) interp;
-    LiteralTable *globalTablePtr = &(iPtr->literalTable);
-    ByteCodeStats *statsPtr = &(iPtr->stats);
+    LiteralTable *globalTablePtr = &iPtr->literalTable;
+    ByteCodeStats *statsPtr = &iPtr->stats;
     double totalCodeBytes, currentCodeBytes;
     double totalLiteralBytes, currentLiteralBytes;
     double objBytesIfUnshared, strBytesIfUnshared, sharingBytesSaved;
@@ -6167,12 +8152,18 @@ EvalStatsCmd(unused, interp, objc, objv)
     int decadeHigh, minSizeDecade, maxSizeDecade, length, i;
     char *litTableStats;
     LiteralEntry *entryPtr;
+    Tcl_Obj *objPtr;
+
+#define Percent(a,b) ((a) * 100.0 / (b))
+
+    objPtr = Tcl_NewObj();
+    Tcl_IncrRefCount(objPtr);
 
     numInstructions = 0.0;
     for (i = 0;  i < 256;  i++) {
-        if (statsPtr->instructionCount[i] != 0) {
-            numInstructions += statsPtr->instructionCount[i];
-        }
+	if (statsPtr->instructionCount[i] != 0) {
+	    numInstructions += statsPtr->instructionCount[i];
+	}
     }
 
     totalLiteralBytes = sizeof(LiteralTable)
@@ -6185,7 +8176,7 @@ EvalStatsCmd(unused, interp, objc, objv)
     numCurrentByteCodes =
 	    statsPtr->numCompilations - statsPtr->numByteCodesFreed;
     currentHeaderBytes = numCurrentByteCodes
-	    * (sizeof(ByteCode) - (sizeof(size_t) + sizeof(Tcl_Time)));
+	    * (sizeof(ByteCode) - sizeof(size_t) - sizeof(Tcl_Time));
     literalMgmtBytes = sizeof(LiteralTable)
 	    + (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *))
 	    + (iPtr->literalTable.numEntries * sizeof(LiteralEntry));
@@ -6193,94 +8184,93 @@ EvalStatsCmd(unused, interp, objc, objv)
 	    + iPtr->literalTable.numEntries * sizeof(Tcl_Obj)
 	    + statsPtr->currentLitStringBytes;
     currentCodeBytes = statsPtr->currentByteCodeBytes + currentLiteralBytes;
-    
+
     /*
      * Summary statistics, total and current source and ByteCode sizes.
      */
 
-    fprintf(stdout, "\n----------------------------------------------------------------\n");
-    fprintf(stdout,
-	    "Compilation and execution statistics for interpreter 0x%x\n",
-	    (unsigned int) iPtr);
+    Tcl_AppendPrintfToObj(objPtr, "\n----------------------------------------------------------------\n");
+    Tcl_AppendPrintfToObj(objPtr,
+	    "Compilation and execution statistics for interpreter %#lx\n",
+	    iPtr);
 
-    fprintf(stdout, "\nNumber ByteCodes executed	%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "\nNumber ByteCodes executed	%ld\n",
 	    statsPtr->numExecutions);
-    fprintf(stdout, "Number ByteCodes compiled	%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "Number ByteCodes compiled	%ld\n",
 	    statsPtr->numCompilations);
-    fprintf(stdout, "  Mean executions/compile	%.1f\n",
-	    ((float)statsPtr->numExecutions) / ((float)statsPtr->numCompilations));
-    
-    fprintf(stdout, "\nInstructions executed		%.0f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean executions/compile	%.1f\n",
+	    statsPtr->numExecutions / (float)statsPtr->numCompilations);
+
+    Tcl_AppendPrintfToObj(objPtr, "\nInstructions executed		%.0f\n",
 	    numInstructions);
-    fprintf(stdout, "  Mean inst/compile		%.0f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean inst/compile		%.0f\n",
 	    numInstructions / statsPtr->numCompilations);
-    fprintf(stdout, "  Mean inst/execution		%.0f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean inst/execution		%.0f\n",
 	    numInstructions / statsPtr->numExecutions);
 
-    fprintf(stdout, "\nTotal ByteCodes			%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "\nTotal ByteCodes			%ld\n",
 	    statsPtr->numCompilations);
-    fprintf(stdout, "  Source bytes			%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Source bytes			%.6g\n",
 	    statsPtr->totalSrcBytes);
-    fprintf(stdout, "  Code bytes			%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Code bytes			%.6g\n",
 	    totalCodeBytes);
-    fprintf(stdout, "    ByteCode bytes		%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "    ByteCode bytes		%.6g\n",
 	    statsPtr->totalByteCodeBytes);
-    fprintf(stdout, "    Literal bytes		%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "    Literal bytes		%.6g\n",
 	    totalLiteralBytes);
-    fprintf(stdout, "      table %u + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
-	    (unsigned int)sizeof(LiteralTable),
-	    (unsigned long)iPtr->literalTable.numBuckets * sizeof(LiteralEntry *),
-	    (unsigned long)statsPtr->numLiteralsCreated * sizeof(LiteralEntry),
-	    (unsigned long)statsPtr->numLiteralsCreated * sizeof(Tcl_Obj),
+    Tcl_AppendPrintfToObj(objPtr, "      table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
+	    (unsigned long) sizeof(LiteralTable),
+	    (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
+	    (unsigned long) (statsPtr->numLiteralsCreated * sizeof(LiteralEntry)),
+	    (unsigned long) (statsPtr->numLiteralsCreated * sizeof(Tcl_Obj)),
 	    statsPtr->totalLitStringBytes);
-    fprintf(stdout, "  Mean code/compile		%.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean code/compile		%.1f\n",
 	    totalCodeBytes / statsPtr->numCompilations);
-    fprintf(stdout, "  Mean code/source		%.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean code/source		%.1f\n",
 	    totalCodeBytes / statsPtr->totalSrcBytes);
 
-    fprintf(stdout, "\nCurrent (active) ByteCodes	%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "\nCurrent (active) ByteCodes	%ld\n",
 	    numCurrentByteCodes);
-    fprintf(stdout, "  Source bytes			%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Source bytes			%.6g\n",
 	    statsPtr->currentSrcBytes);
-    fprintf(stdout, "  Code bytes			%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Code bytes			%.6g\n",
 	    currentCodeBytes);
-    fprintf(stdout, "    ByteCode bytes		%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "    ByteCode bytes		%.6g\n",
 	    statsPtr->currentByteCodeBytes);
-    fprintf(stdout, "    Literal bytes		%.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "    Literal bytes		%.6g\n",
 	    currentLiteralBytes);
-    fprintf(stdout, "      table %u + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
-	    (unsigned int)sizeof(LiteralTable),
-	    (unsigned long)iPtr->literalTable.numBuckets * sizeof(LiteralEntry *),
-	    (unsigned long)iPtr->literalTable.numEntries * sizeof(LiteralEntry),
-	    (unsigned long)iPtr->literalTable.numEntries * sizeof(Tcl_Obj),
+    Tcl_AppendPrintfToObj(objPtr, "      table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
+	    (unsigned long) sizeof(LiteralTable),
+	    (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
+	    (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)),
+	    (unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)),
 	    statsPtr->currentLitStringBytes);
-    fprintf(stdout, "  Mean code/source		%.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean code/source		%.1f\n",
 	    currentCodeBytes / statsPtr->currentSrcBytes);
-    fprintf(stdout, "  Code + source bytes		%.6g (%0.1f mean code/src)\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Code + source bytes		%.6g (%0.1f mean code/src)\n",
 	    (currentCodeBytes + statsPtr->currentSrcBytes),
 	    (currentCodeBytes / statsPtr->currentSrcBytes) + 1.0);
 
     /*
      * Tcl_IsShared statistics check
      *
-     * This gives the refcount of each obj as Tcl_IsShared was called
-     * for it.  Shared objects must be duplicated before they can be
-     * modified.
+     * This gives the refcount of each obj as Tcl_IsShared was called for it.
+     * Shared objects must be duplicated before they can be modified.
      */
 
     numSharedMultX = 0;
-    fprintf(stdout, "\nTcl_IsShared object check (all objects):\n");
-    fprintf(stdout, "  Object had refcount <=1 (not shared)	%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "\nTcl_IsShared object check (all objects):\n");
+    Tcl_AppendPrintfToObj(objPtr, "  Object had refcount <=1 (not shared)	%ld\n",
 	    tclObjsShared[1]);
     for (i = 2;  i < TCL_MAX_SHARED_OBJ_STATS;  i++) {
-	fprintf(stdout, "  refcount ==%d		%ld\n",
+	Tcl_AppendPrintfToObj(objPtr, "  refcount ==%d		%ld\n",
 		i, tclObjsShared[i]);
 	numSharedMultX += tclObjsShared[i];
     }
-    fprintf(stdout, "  refcount >=%d		%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "  refcount >=%d		%ld\n",
 	    i, tclObjsShared[0]);
     numSharedMultX += tclObjsShared[0];
-    fprintf(stdout, "  Total shared objects			%d\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Total shared objects			%d\n",
 	    numSharedMultX);
 
     /*
@@ -6290,14 +8280,14 @@ EvalStatsCmd(unused, interp, objc, objv)
     numByteCodeLits = 0;
     refCountSum = 0;
     numSharedMultX = 0;
-    numSharedOnce  = 0;
-    objBytesIfUnshared  = 0.0;
-    strBytesIfUnshared  = 0.0;
+    numSharedOnce = 0;
+    objBytesIfUnshared = 0.0;
+    strBytesIfUnshared = 0.0;
     strBytesSharedMultX = 0.0;
-    strBytesSharedOnce  = 0.0;
+    strBytesSharedOnce = 0.0;
     for (i = 0;  i < globalTablePtr->numBuckets;  i++) {
 	for (entryPtr = globalTablePtr->buckets[i];  entryPtr != NULL;
-	        entryPtr = entryPtr->nextPtr) {
+		entryPtr = entryPtr->nextPtr) {
 	    if (entryPtr->objPtr->typePtr == &tclByteCodeType) {
 		numByteCodeLits++;
 	    }
@@ -6317,213 +8307,230 @@ EvalStatsCmd(unused, interp, objc, objv)
     sharingBytesSaved = (objBytesIfUnshared + strBytesIfUnshared)
 	    - currentLiteralBytes;
 
-    fprintf(stdout, "\nTotal objects (all interps)	%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "\nTotal objects (all interps)	%ld\n",
 	    tclObjsAlloced);
-    fprintf(stdout, "Current objects			%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "Current objects			%ld\n",
 	    (tclObjsAlloced - tclObjsFreed));
-    fprintf(stdout, "Total literal objects		%ld\n",
+    Tcl_AppendPrintfToObj(objPtr, "Total literal objects		%ld\n",
 	    statsPtr->numLiteralsCreated);
 
-    fprintf(stdout, "\nCurrent literal objects		%d (%0.1f%% of current objects)\n",
+    Tcl_AppendPrintfToObj(objPtr, "\nCurrent literal objects		%d (%0.1f%% of current objects)\n",
 	    globalTablePtr->numEntries,
-	    (globalTablePtr->numEntries * 100.0) / (tclObjsAlloced-tclObjsFreed));
-    fprintf(stdout, "  ByteCode literals	 	%ld (%0.1f%% of current literals)\n",
+	    Percent(globalTablePtr->numEntries, tclObjsAlloced-tclObjsFreed));
+    Tcl_AppendPrintfToObj(objPtr, "  ByteCode literals	 	%ld (%0.1f%% of current literals)\n",
 	    numByteCodeLits,
-	    (numByteCodeLits * 100.0) / globalTablePtr->numEntries);
-    fprintf(stdout, "  Literals reused > 1x	 	%d\n",
+	    Percent(numByteCodeLits, globalTablePtr->numEntries));
+    Tcl_AppendPrintfToObj(objPtr, "  Literals reused > 1x	 	%d\n",
 	    numSharedMultX);
-    fprintf(stdout, "  Mean reference count	 	%.2f\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean reference count	 	%.2f\n",
 	    ((double) refCountSum) / globalTablePtr->numEntries);
-    fprintf(stdout, "  Mean len, str reused >1x 	%.2f\n",
-	    (numSharedMultX? (strBytesSharedMultX/numSharedMultX) : 0.0));
-    fprintf(stdout, "  Mean len, str used 1x	 	%.2f\n",
-	    (numSharedOnce? (strBytesSharedOnce/numSharedOnce) : 0.0));
-    fprintf(stdout, "  Total sharing savings	 	%.6g (%0.1f%% of bytes if no sharing)\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Mean len, str reused >1x 	%.2f\n",
+	    (numSharedMultX ? strBytesSharedMultX/numSharedMultX : 0.0));
+    Tcl_AppendPrintfToObj(objPtr, "  Mean len, str used 1x	 	%.2f\n",
+	    (numSharedOnce ? strBytesSharedOnce/numSharedOnce : 0.0));
+    Tcl_AppendPrintfToObj(objPtr, "  Total sharing savings	 	%.6g (%0.1f%% of bytes if no sharing)\n",
 	    sharingBytesSaved,
-	    (sharingBytesSaved * 100.0) / (objBytesIfUnshared + strBytesIfUnshared));
-    fprintf(stdout, "    Bytes with sharing		%.6g\n",
+	    Percent(sharingBytesSaved, objBytesIfUnshared+strBytesIfUnshared));
+    Tcl_AppendPrintfToObj(objPtr, "    Bytes with sharing		%.6g\n",
 	    currentLiteralBytes);
-    fprintf(stdout, "      table %u + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
-	    (unsigned int)sizeof(LiteralTable),
-	    (unsigned long)iPtr->literalTable.numBuckets * sizeof(LiteralEntry *),
-	    (unsigned long)iPtr->literalTable.numEntries * sizeof(LiteralEntry),
-	    (unsigned long)iPtr->literalTable.numEntries * sizeof(Tcl_Obj),
+    Tcl_AppendPrintfToObj(objPtr, "      table %lu + bkts %lu + entries %lu + objects %lu + strings %.6g\n",
+	    (unsigned long) sizeof(LiteralTable),
+	    (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
+	    (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)),
+	    (unsigned long) (iPtr->literalTable.numEntries * sizeof(Tcl_Obj)),
 	    statsPtr->currentLitStringBytes);
-    fprintf(stdout, "    Bytes if no sharing		%.6g = objects %.6g + strings %.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "    Bytes if no sharing		%.6g = objects %.6g + strings %.6g\n",
 	    (objBytesIfUnshared + strBytesIfUnshared),
 	    objBytesIfUnshared, strBytesIfUnshared);
-    fprintf(stdout, "  String sharing savings 	%.6g = unshared %.6g - shared %.6g\n",
+    Tcl_AppendPrintfToObj(objPtr, "  String sharing savings 	%.6g = unshared %.6g - shared %.6g\n",
 	    (strBytesIfUnshared - statsPtr->currentLitStringBytes),
 	    strBytesIfUnshared, statsPtr->currentLitStringBytes);
-    fprintf(stdout, "  Literal mgmt overhead	 	%ld (%0.1f%% of bytes with sharing)\n",
+    Tcl_AppendPrintfToObj(objPtr, "  Literal mgmt overhead	 	%ld (%0.1f%% of bytes with sharing)\n",
 	    literalMgmtBytes,
-	    (literalMgmtBytes * 100.0) / currentLiteralBytes);
-    fprintf(stdout, "    table %u + buckets %lu + entries %lu\n",
-	    (unsigned int)sizeof(LiteralTable),
-	    (unsigned long)iPtr->literalTable.numBuckets * sizeof(LiteralEntry *),
-	    (unsigned long)iPtr->literalTable.numEntries * sizeof(LiteralEntry));
+	    Percent(literalMgmtBytes, currentLiteralBytes));
+    Tcl_AppendPrintfToObj(objPtr, "    table %lu + buckets %lu + entries %lu\n",
+	    (unsigned long) sizeof(LiteralTable),
+	    (unsigned long) (iPtr->literalTable.numBuckets * sizeof(LiteralEntry *)),
+	    (unsigned long) (iPtr->literalTable.numEntries * sizeof(LiteralEntry)));
 
     /*
      * Breakdown of current ByteCode space requirements.
      */
-    
-    fprintf(stdout, "\nBreakdown of current ByteCode requirements:\n");
-    fprintf(stdout, "                         Bytes      Pct of    Avg per\n");
-    fprintf(stdout, "                                     total    ByteCode\n");
-    fprintf(stdout, "Total             %12.6g     100.00%%   %8.1f\n",
+
+    Tcl_AppendPrintfToObj(objPtr, "\nBreakdown of current ByteCode requirements:\n");
+    Tcl_AppendPrintfToObj(objPtr, "                         Bytes      Pct of    Avg per\n");
+    Tcl_AppendPrintfToObj(objPtr, "                                     total    ByteCode\n");
+    Tcl_AppendPrintfToObj(objPtr, "Total             %12.6g     100.00%%   %8.1f\n",
 	    statsPtr->currentByteCodeBytes,
 	    statsPtr->currentByteCodeBytes / numCurrentByteCodes);
-    fprintf(stdout, "Header            %12.6g   %8.1f%%   %8.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "Header            %12.6g   %8.1f%%   %8.1f\n",
 	    currentHeaderBytes,
-	    ((currentHeaderBytes * 100.0) / statsPtr->currentByteCodeBytes),
+	    Percent(currentHeaderBytes, statsPtr->currentByteCodeBytes),
 	    currentHeaderBytes / numCurrentByteCodes);
-    fprintf(stdout, "Instructions      %12.6g   %8.1f%%   %8.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "Instructions      %12.6g   %8.1f%%   %8.1f\n",
 	    statsPtr->currentInstBytes,
-	    ((statsPtr->currentInstBytes * 100.0) / statsPtr->currentByteCodeBytes),
+	    Percent(statsPtr->currentInstBytes,statsPtr->currentByteCodeBytes),
 	    statsPtr->currentInstBytes / numCurrentByteCodes);
-    fprintf(stdout, "Literal ptr array %12.6g   %8.1f%%   %8.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "Literal ptr array %12.6g   %8.1f%%   %8.1f\n",
 	    statsPtr->currentLitBytes,
-	    ((statsPtr->currentLitBytes * 100.0) / statsPtr->currentByteCodeBytes),
+	    Percent(statsPtr->currentLitBytes,statsPtr->currentByteCodeBytes),
 	    statsPtr->currentLitBytes / numCurrentByteCodes);
-    fprintf(stdout, "Exception table   %12.6g   %8.1f%%   %8.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "Exception table   %12.6g   %8.1f%%   %8.1f\n",
 	    statsPtr->currentExceptBytes,
-	    ((statsPtr->currentExceptBytes * 100.0) / statsPtr->currentByteCodeBytes),
+	    Percent(statsPtr->currentExceptBytes,statsPtr->currentByteCodeBytes),
 	    statsPtr->currentExceptBytes / numCurrentByteCodes);
-    fprintf(stdout, "Auxiliary data    %12.6g   %8.1f%%   %8.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "Auxiliary data    %12.6g   %8.1f%%   %8.1f\n",
 	    statsPtr->currentAuxBytes,
-	    ((statsPtr->currentAuxBytes * 100.0) / statsPtr->currentByteCodeBytes),
+	    Percent(statsPtr->currentAuxBytes,statsPtr->currentByteCodeBytes),
 	    statsPtr->currentAuxBytes / numCurrentByteCodes);
-    fprintf(stdout, "Command map       %12.6g   %8.1f%%   %8.1f\n",
+    Tcl_AppendPrintfToObj(objPtr, "Command map       %12.6g   %8.1f%%   %8.1f\n",
 	    statsPtr->currentCmdMapBytes,
-	    ((statsPtr->currentCmdMapBytes * 100.0) / statsPtr->currentByteCodeBytes),
+	    Percent(statsPtr->currentCmdMapBytes,statsPtr->currentByteCodeBytes),
 	    statsPtr->currentCmdMapBytes / numCurrentByteCodes);
 
     /*
      * Detailed literal statistics.
      */
-    
-    fprintf(stdout, "\nLiteral string sizes:\n");
-    fprintf(stdout, "	 Up to length		Percentage\n");
+
+    Tcl_AppendPrintfToObj(objPtr, "\nLiteral string sizes:\n");
+    Tcl_AppendPrintfToObj(objPtr, "	 Up to length		Percentage\n");
     maxSizeDecade = 0;
     for (i = 31;  i >= 0;  i--) {
-        if (statsPtr->literalCount[i] > 0) {
-            maxSizeDecade = i;
+	if (statsPtr->literalCount[i] > 0) {
+	    maxSizeDecade = i;
 	    break;
-        }
+	}
     }
     sum = 0;
     for (i = 0;  i <= maxSizeDecade;  i++) {
 	decadeHigh = (1 << (i+1)) - 1;
 	sum += statsPtr->literalCount[i];
-        fprintf(stdout,	"	%10d		%8.0f%%\n",
-		decadeHigh, (sum * 100.0) / statsPtr->numLiteralsCreated);
+	Tcl_AppendPrintfToObj(objPtr, "	%10d		%8.0f%%\n",
+		decadeHigh, Percent(sum, statsPtr->numLiteralsCreated));
     }
 
     litTableStats = TclLiteralStats(globalTablePtr);
-    fprintf(stdout, "\nCurrent literal table statistics:\n%s\n",
-            litTableStats);
+    Tcl_AppendPrintfToObj(objPtr, "\nCurrent literal table statistics:\n%s\n",
+	    litTableStats);
     ckfree((char *) litTableStats);
 
     /*
      * Source and ByteCode size distributions.
      */
 
-    fprintf(stdout, "\nSource sizes:\n");
-    fprintf(stdout, "	 Up to size		Percentage\n");
+    Tcl_AppendPrintfToObj(objPtr, "\nSource sizes:\n");
+    Tcl_AppendPrintfToObj(objPtr, "	 Up to size		Percentage\n");
     minSizeDecade = maxSizeDecade = 0;
     for (i = 0;  i < 31;  i++) {
-        if (statsPtr->srcCount[i] > 0) {
+	if (statsPtr->srcCount[i] > 0) {
 	    minSizeDecade = i;
 	    break;
-        }
+	}
     }
     for (i = 31;  i >= 0;  i--) {
-        if (statsPtr->srcCount[i] > 0) {
-            maxSizeDecade = i;
+	if (statsPtr->srcCount[i] > 0) {
+	    maxSizeDecade = i;
 	    break;
-        }
+	}
     }
     sum = 0;
     for (i = minSizeDecade;  i <= maxSizeDecade;  i++) {
 	decadeHigh = (1 << (i+1)) - 1;
 	sum += statsPtr->srcCount[i];
-        fprintf(stdout,	"	%10d		%8.0f%%\n",
-		decadeHigh, (sum * 100.0) / statsPtr->numCompilations);
+	Tcl_AppendPrintfToObj(objPtr, "	%10d		%8.0f%%\n",
+		decadeHigh, Percent(sum, statsPtr->numCompilations));
     }
 
-    fprintf(stdout, "\nByteCode sizes:\n");
-    fprintf(stdout, "	 Up to size		Percentage\n");
+    Tcl_AppendPrintfToObj(objPtr, "\nByteCode sizes:\n");
+    Tcl_AppendPrintfToObj(objPtr, "	 Up to size		Percentage\n");
     minSizeDecade = maxSizeDecade = 0;
     for (i = 0;  i < 31;  i++) {
-        if (statsPtr->byteCodeCount[i] > 0) {
+	if (statsPtr->byteCodeCount[i] > 0) {
 	    minSizeDecade = i;
 	    break;
-        }
+	}
     }
     for (i = 31;  i >= 0;  i--) {
-        if (statsPtr->byteCodeCount[i] > 0) {
-            maxSizeDecade = i;
+	if (statsPtr->byteCodeCount[i] > 0) {
+	    maxSizeDecade = i;
 	    break;
-        }
+	}
     }
     sum = 0;
     for (i = minSizeDecade;  i <= maxSizeDecade;  i++) {
 	decadeHigh = (1 << (i+1)) - 1;
 	sum += statsPtr->byteCodeCount[i];
-        fprintf(stdout,	"	%10d		%8.0f%%\n",
-		decadeHigh, (sum * 100.0) / statsPtr->numCompilations);
+	Tcl_AppendPrintfToObj(objPtr, "	%10d		%8.0f%%\n",
+		decadeHigh, Percent(sum, statsPtr->numCompilations));
     }
 
-    fprintf(stdout, "\nByteCode longevity (excludes Current ByteCodes):\n");
-    fprintf(stdout, "	       Up to ms		Percentage\n");
+    Tcl_AppendPrintfToObj(objPtr, "\nByteCode longevity (excludes Current ByteCodes):\n");
+    Tcl_AppendPrintfToObj(objPtr, "	       Up to ms		Percentage\n");
     minSizeDecade = maxSizeDecade = 0;
     for (i = 0;  i < 31;  i++) {
-        if (statsPtr->lifetimeCount[i] > 0) {
+	if (statsPtr->lifetimeCount[i] > 0) {
 	    minSizeDecade = i;
 	    break;
-        }
+	}
     }
     for (i = 31;  i >= 0;  i--) {
-        if (statsPtr->lifetimeCount[i] > 0) {
-            maxSizeDecade = i;
+	if (statsPtr->lifetimeCount[i] > 0) {
+	    maxSizeDecade = i;
 	    break;
-        }
+	}
     }
     sum = 0;
     for (i = minSizeDecade;  i <= maxSizeDecade;  i++) {
 	decadeHigh = (1 << (i+1)) - 1;
 	sum += statsPtr->lifetimeCount[i];
-        fprintf(stdout,	"	%12.3f		%8.0f%%\n",
-		decadeHigh / 1000.0,
-		(sum * 100.0) / statsPtr->numByteCodesFreed);
+	Tcl_AppendPrintfToObj(objPtr, "	%12.3f		%8.0f%%\n",
+		decadeHigh/1000.0, Percent(sum, statsPtr->numByteCodesFreed));
     }
 
     /*
      * Instruction counts.
      */
 
-    fprintf(stdout, "\nInstruction counts:\n");
-    for (i = 0;  i <= LAST_INST_OPCODE;  i++) {
-        if (statsPtr->instructionCount[i]) {
-            fprintf(stdout, "%20s %8ld %6.1f%%\n",
-		    tclInstructionTable[i].name,
-		    statsPtr->instructionCount[i],
-		    (statsPtr->instructionCount[i]*100.0) / numInstructions);
-        }
-    }
-
-    fprintf(stdout, "\nInstructions NEVER executed:\n");
+    Tcl_AppendPrintfToObj(objPtr, "\nInstruction counts:\n");
     for (i = 0;  i <= LAST_INST_OPCODE;  i++) {
-        if (statsPtr->instructionCount[i] == 0) {
-            fprintf(stdout, "%20s\n", tclInstructionTable[i].name);
-        }
+	Tcl_AppendPrintfToObj(objPtr, "%20s %8ld ",
+		tclInstructionTable[i].name, statsPtr->instructionCount[i]);
+	if (statsPtr->instructionCount[i]) {
+	    Tcl_AppendPrintfToObj(objPtr, "%6.1f%%\n",
+		    Percent(statsPtr->instructionCount[i], numInstructions));
+	} else {
+	    Tcl_AppendPrintfToObj(objPtr, "0\n");
+	}
     }
 
 #ifdef TCL_MEM_DEBUG
-    fprintf(stdout, "\nHeap Statistics:\n");
-    TclDumpMemoryInfo(stdout);
+    Tcl_AppendPrintfToObj(objPtr, "\nHeap Statistics:\n");
+    TclDumpMemoryInfo((ClientData) objPtr, 1);
 #endif
-    fprintf(stdout, "\n----------------------------------------------------------------\n");
+    Tcl_AppendPrintfToObj(objPtr, "\n----------------------------------------------------------------\n");
+
+    if (objc == 1) {
+	Tcl_SetObjResult(interp, objPtr);
+    } else {
+	Tcl_Channel outChan;
+	char *str = Tcl_GetStringFromObj(objv[1], &length);
+
+	if (length) {
+	    if (strcmp(str, "stdout") == 0) {
+		outChan = Tcl_GetStdChannel(TCL_STDOUT);
+	    } else if (strcmp(str, "stderr") == 0) {
+		outChan = Tcl_GetStdChannel(TCL_STDERR);
+	    } else {
+		outChan = Tcl_OpenFileChannel(NULL, str, "w", 0664);
+	    }
+	} else {
+	    outChan = Tcl_GetStdChannel(TCL_STDOUT);
+	}
+	if (outChan != NULL) {
+	    Tcl_WriteObj(outChan, objPtr);
+	}
+    }
+    Tcl_DecrRefCount(objPtr);
     return TCL_OK;
 }
 #endif /* TCL_COMPILE_STATS */
@@ -6534,15 +8541,15 @@ EvalStatsCmd(unused, interp, objc, objv)
  *
  * StringForResultCode --
  *
- *	Procedure that returns a human-readable string representing a
- *	Tcl result code such as TCL_ERROR. 
+ *	Procedure that returns a human-readable string representing a Tcl
+ *	result code such as TCL_ERROR.
  *
  * Results:
- *	If the result code is one of the standard Tcl return codes, the
- *	result is a string representing that code such as "TCL_ERROR".
- *	Otherwise, the result string is that code formatted as a
- *	sequence of decimal digit characters. Note that the resulting
- *	string must not be modified by the caller.
+ *	If the result code is one of the standard Tcl return codes, the result
+ *	is a string representing that code such as "TCL_ERROR". Otherwise, the
+ *	result string is that code formatted as a sequence of decimal digit
+ *	characters. Note that the resulting string must not be modified by the
+ *	caller.
  *
  * Side effects:
  *	None.
@@ -6550,13 +8557,13 @@ EvalStatsCmd(unused, interp, objc, objv)
  *----------------------------------------------------------------------
  */
 
-static CONST char *
-StringForResultCode(result)
-    int result;			/* The Tcl result code for which to
-				 * generate a string. */
+static const char *
+StringForResultCode(
+    int result)			/* The Tcl result code for which to generate a
+				 * string. */
 {
     static char buf[TCL_INTEGER_SPACE];
-    
+
     if ((result >= TCL_OK) && (result <= TCL_CONTINUE)) {
 	return resultStrings[result];
     }
@@ -6572,4 +8579,3 @@ StringForResultCode(result)
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclFCmd.c b/generic/tclFCmd.c
index 5ad7063..c59fb54 100644
--- a/generic/tclFCmd.c
+++ b/generic/tclFCmd.c
@@ -1,47 +1,39 @@
 /*
  * tclFCmd.c
  *
- *      This file implements the generic portion of file manipulation 
- *      subcommands of the "file" command. 
+ *	This file implements the generic portion of file manipulation
+ *	subcommands of the "file" command.
  *
  * Copyright (c) 1996-1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#ifndef _WIN64
-/* See [Bug 3354324]: file mtime sets wrong time */
-#   define _USE_32BIT_TIME_T
-#endif
-
-#include <sys/stat.h>
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * Declarations for local procedures defined in this file:
+ * Declarations for local functions defined in this file:
  */
 
-static int		CopyRenameOneFile _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr, 
-			    int copyFlag, int force));
-static Tcl_Obj *	FileBasename _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *pathPtr));
-static int		FileCopyRename _ANSI_ARGS_((Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[], int copyFlag));
-static int		FileForceOption _ANSI_ARGS_((Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[], int *forcePtr));
+static int		CopyRenameOneFile(Tcl_Interp *interp,
+			    Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr,
+			    int copyFlag, int force);
+static Tcl_Obj *	FileBasename(Tcl_Interp *interp, Tcl_Obj *pathPtr);
+static int		FileCopyRename(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *CONST objv[], int copyFlag);
+static int		FileForceOption(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *CONST objv[], int *forcePtr);
 
 /*
  *---------------------------------------------------------------------------
  *
  * TclFileRenameCmd
  *
- *	This procedure implements the "rename" subcommand of the "file"
- *      command.  Filename arguments need to be translated to native
- *	format before being passed to platform-specific code that
- *	implements rename functionality.
+ *	This function implements the "rename" subcommand of the "file"
+ *	command. Filename arguments need to be translated to native format
+ *	before being passed to platform-specific code that implements rename
+ *	functionality.
  *
  * Results:
  *	A standard Tcl result.
@@ -53,10 +45,11 @@ static int		FileForceOption _ANSI_ARGS_((Tcl_Interp *interp,
  */
 
 int
-TclFileRenameCmd(interp, objc, objv)
-    Tcl_Interp *interp;		/* Interp for error reporting. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument strings passed to Tcl_FileCmd. */
+TclFileRenameCmd(
+    Tcl_Interp *interp,		/* Interp for error reporting or recursive
+				 * calls in the case of a tricky rename. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument strings passed to Tcl_FileCmd. */
 {
     return FileCopyRename(interp, objc, objv, 0);
 }
@@ -66,10 +59,9 @@ TclFileRenameCmd(interp, objc, objv)
  *
  * TclFileCopyCmd
  *
- *	This procedure implements the "copy" subcommand of the "file"
- *	command.  Filename arguments need to be translated to native
- *	format before being passed to platform-specific code that
- *	implements copy functionality.
+ *	This function implements the "copy" subcommand of the "file" command.
+ *	Filename arguments need to be translated to native format before being
+ *	passed to platform-specific code that implements copy functionality.
  *
  * Results:
  *	A standard Tcl result.
@@ -81,10 +73,11 @@ TclFileRenameCmd(interp, objc, objv)
  */
 
 int
-TclFileCopyCmd(interp, objc, objv)
-    Tcl_Interp *interp;		/* Used for error reporting */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument strings passed to Tcl_FileCmd. */
+TclFileCopyCmd(
+    Tcl_Interp *interp,		/* Used for error reporting or recursive calls
+				 * in the case of a tricky copy. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument strings passed to Tcl_FileCmd. */
 {
     return FileCopyRename(interp, objc, objv, 1);
 }
@@ -94,8 +87,8 @@ TclFileCopyCmd(interp, objc, objv)
  *
  * FileCopyRename --
  *
- *	Performs the work of TclFileRenameCmd and TclFileCopyCmd.
- *	See comments for those procedures.
+ *	Performs the work of TclFileRenameCmd and TclFileCopyCmd. See
+ *	comments for those functions.
  *
  * Results:
  *	See above.
@@ -107,15 +100,15 @@ TclFileCopyCmd(interp, objc, objv)
  */
 
 static int
-FileCopyRename(interp, objc, objv, copyFlag)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument strings passed to Tcl_FileCmd. */
-    int copyFlag;		/* If non-zero, copy source(s).  Otherwise,
+FileCopyRename(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[],	/* Argument strings passed to Tcl_FileCmd. */
+    int copyFlag)		/* If non-zero, copy source(s). Otherwise,
 				 * rename them. */
 {
     int i, result, force;
-    Tcl_StatBuf statBuf; 
+    Tcl_StatBuf statBuf;
     Tcl_Obj *target;
 
     i = FileForceOption(interp, objc - 2, objv + 2, &force);
@@ -124,10 +117,9 @@ FileCopyRename(interp, objc, objv, copyFlag)
     }
     i += 2;
     if ((objc - i) < 2) {
-	Tcl_AppendResult(interp, "wrong # args: should be \"", 
-		Tcl_GetString(objv[0]), " ", Tcl_GetString(objv[1]), 
-		" ?options? source ?source ...? target\"", 
-		(char *) NULL);
+	Tcl_AppendResult(interp, "wrong # args: should be \"",
+		TclGetString(objv[0]), " ", TclGetString(objv[1]),
+		" ?options? source ?source ...? target\"", NULL);
 	return TCL_ERROR;
     }
 
@@ -155,15 +147,14 @@ FileCopyRename(interp, objc, objv, copyFlag)
 	    errno = ENOTDIR;
 	    Tcl_PosixError(interp);
 	    Tcl_AppendResult(interp, "error ",
-		    ((copyFlag) ? "copying" : "renaming"), ": target \"",
-		    Tcl_GetString(target), "\" is not a directory", 
-		    (char *) NULL);
+		    (copyFlag ? "copying" : "renaming"), ": target \"",
+		    TclGetString(target), "\" is not a directory", NULL);
 	    result = TCL_ERROR;
 	} else {
 	    /*
-	     * Even though already have target == translated(objv[i+1]),
-	     * pass the original argument down, so if there's an error, the
-	     * error message will reflect the original arguments.
+	     * Even though already have target == translated(objv[i+1]), pass
+	     * the original argument down, so if there's an error, the error
+	     * message will reflect the original arguments.
 	     */
 
 	    result = CopyRenameOneFile(interp, objv[i], objv[i + 1], copyFlag,
@@ -171,17 +162,17 @@ FileCopyRename(interp, objc, objv, copyFlag)
 	}
 	return result;
     }
-    
+
     /*
-     * Move each source file into target directory.  Extract the basename
-     * from each source, and append it to the end of the target path.
+     * Move each source file into target directory. Extract the basename from
+     * each source, and append it to the end of the target path.
      */
 
-    for ( ; i < objc - 1; i++) {
+    for ( ; i<objc-1 ; i++) {
 	Tcl_Obj *jargv[2];
 	Tcl_Obj *source, *newFileName;
 	Tcl_Obj *temp;
-	
+
 	source = FileBasename(interp, objv[i]);
 	if (source == NULL) {
 	    result = TCL_ERROR;
@@ -210,10 +201,9 @@ FileCopyRename(interp, objc, objv, copyFlag)
  *
  * TclFileMakeDirsCmd
  *
- *	This procedure implements the "mkdir" subcommand of the "file"
- *      command.  Filename arguments need to be translated to native
- *	format before being passed to platform-specific code that
- *	implements mkdir functionality.
+ *	This function implements the "mkdir" subcommand of the "file" command.
+ *	Filename arguments need to be translated to native format before being
+ *	passed to platform-specific code that implements mkdir functionality.
  *
  * Results:
  *	A standard Tcl result.
@@ -223,11 +213,12 @@ FileCopyRename(interp, objc, objv, copyFlag)
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclFileMakeDirsCmd(interp, objc, objv)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    int objc;			/* Number of arguments */
-    Tcl_Obj *CONST objv[];	/* Argument strings passed to Tcl_FileCmd. */
+TclFileMakeDirsCmd(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    int objc,			/* Number of arguments */
+    Tcl_Obj *CONST objv[])	/* Argument strings passed to Tcl_FileCmd. */
 {
     Tcl_Obj *errfile;
     int result, i, j, pobjc;
@@ -245,6 +236,7 @@ TclFileMakeDirsCmd(interp, objc, objv)
 	}
 
 	split = Tcl_FSSplitPath(objv[i],&pobjc);
+	Tcl_IncrRefCount(split);
 	if (pobjc == 0) {
 	    errno = ENOENT;
 	    errfile = objv[i];
@@ -253,10 +245,10 @@ TclFileMakeDirsCmd(interp, objc, objv)
 	for (j = 0; j < pobjc; j++) {
 	    target = Tcl_FSJoinPath(split, j + 1);
 	    Tcl_IncrRefCount(target);
+
 	    /*
-	     * Call Tcl_FSStat() so that if target is a symlink that
-	     * points to a directory we will create subdirectories in
-	     * that directory.
+	     * Call Tcl_FSStat() so that if target is a symlink that points to
+	     * a directory we will create subdirectories in that directory.
 	     */
 
 	    if (Tcl_FSStat(target, &statBuf) == 0) {
@@ -267,25 +259,27 @@ TclFileMakeDirsCmd(interp, objc, objv)
 		}
 	    } else if (errno != ENOENT) {
 		/*
-		 * If Tcl_FSStat() failed and the error is anything
-		 * other than non-existence of the target, throw the
-		 * error.
+		 * If Tcl_FSStat() failed and the error is anything other than
+		 * non-existence of the target, throw the error.
 		 */
+
 		errfile = target;
 		goto done;
 	    } else if (Tcl_FSCreateDirectory(target) != TCL_OK) {
 		/*
 		 * Create might have failed because of being in a race
-		 * condition with another process trying to create the
-		 * same subdirectory.
+		 * condition with another process trying to create the same
+		 * subdirectory.
 		 */
+
 		if (errno == EEXIST) {
 		    if ((Tcl_FSStat(target, &statBuf) == 0)
 			    && S_ISDIR(statBuf.st_mode)) {
 			/*
-			 * It is a directory that wasn't there before,
-			 * so keep going without error.
+			 * It is a directory that wasn't there before, so keep
+			 * going without error.
 			 */
+
 			Tcl_ResetResult(interp);
 		    } else {
 			errfile = target;
@@ -296,7 +290,11 @@ TclFileMakeDirsCmd(interp, objc, objv)
 		    goto done;
 		}
 	    }
- 	    /* Forget about this sub-path */
+
+	    /*
+	     * Forget about this sub-path.
+	     */
+
 	    Tcl_DecrRefCount(target);
 	    target = NULL;
 	}
@@ -304,11 +302,10 @@ TclFileMakeDirsCmd(interp, objc, objv)
 	split = NULL;
     }
 
-    done:
+  done:
     if (errfile != NULL) {
 	Tcl_AppendResult(interp, "can't create directory \"",
-		Tcl_GetString(errfile), "\": ", Tcl_PosixError(interp), 
-		(char *) NULL);
+		TclGetString(errfile), "\": ", Tcl_PosixError(interp), NULL);
 	result = TCL_ERROR;
     }
     if (split != NULL) {
@@ -325,8 +322,8 @@ TclFileMakeDirsCmd(interp, objc, objv)
  *
  * TclFileDeleteCmd
  *
- *	This procedure implements the "delete" subcommand of the "file"
- *      command.
+ *	This function implements the "delete" subcommand of the "file"
+ *	command.
  *
  * Results:
  *	A standard Tcl result.
@@ -338,24 +335,24 @@ TclFileMakeDirsCmd(interp, objc, objv)
  */
 
 int
-TclFileDeleteCmd(interp, objc, objv)
-    Tcl_Interp *interp;		/* Used for error reporting */
-    int objc;			/* Number of arguments */
-    Tcl_Obj *CONST objv[];	/* Argument strings passed to Tcl_FileCmd. */
+TclFileDeleteCmd(
+    Tcl_Interp *interp,		/* Used for error reporting */
+    int objc,			/* Number of arguments */
+    Tcl_Obj *CONST objv[])	/* Argument strings passed to Tcl_FileCmd. */
 {
     int i, force, result;
     Tcl_Obj *errfile;
     Tcl_Obj *errorBuffer = NULL;
-    
+
     i = FileForceOption(interp, objc - 2, objv + 2, &force);
     if (i < 0) {
 	return TCL_ERROR;
     }
     i += 2;
     if ((objc - i) < 1) {
-	Tcl_AppendResult(interp, "wrong # args: should be \"", 
-		Tcl_GetString(objv[0]), " ", Tcl_GetString(objv[1]), 
-		" ?options? file ?file ...?\"", (char *) NULL);
+	Tcl_AppendResult(interp, "wrong # args: should be \"",
+		TclGetString(objv[0]), " ", TclGetString(objv[1]),
+		" ?options? file ?file ...?\"", NULL);
 	return TCL_ERROR;
     }
 
@@ -377,34 +374,39 @@ TclFileDeleteCmd(interp, objc, objv)
 
 	if (Tcl_FSLstat(objv[i], &statBuf) != 0) {
 	    /*
-	     * Trying to delete a file that does not exist is not
-	     * considered an error, just a no-op
+	     * Trying to delete a file that does not exist is not considered
+	     * an error, just a no-op
 	     */
 
 	    if (errno != ENOENT) {
 		result = TCL_ERROR;
 	    }
 	} else if (S_ISDIR(statBuf.st_mode)) {
-	    /* 
-	     * We own a reference count on errorBuffer, if it was set
-	     * as a result of this call. 
+	    /*
+	     * We own a reference count on errorBuffer, if it was set as a
+	     * result of this call.
 	     */
+
 	    result = Tcl_FSRemoveDirectory(objv[i], force, &errorBuffer);
 	    if (result != TCL_OK) {
 		if ((force == 0) && (errno == EEXIST)) {
-		    Tcl_AppendResult(interp, "error deleting \"", 
-			    Tcl_GetString(objv[i]),
-			    "\": directory not empty", (char *) NULL);
+		    Tcl_AppendResult(interp, "error deleting \"",
+			    TclGetString(objv[i]), "\": directory not empty",
+			    NULL);
 		    Tcl_PosixError(interp);
 		    goto done;
 		}
 
-		/* 
+		/*
 		 * If possible, use the untranslated name for the file.
 		 */
-		 
+
 		errfile = errorBuffer;
-		/* FS supposed to check between translated objv and errfile */
+
+		/*
+		 * FS supposed to check between translated objv and errfile.
+		 */
+
 		if (Tcl_FSEqualPaths(objv[i], errfile)) {
 		    errfile = objv[i];
 		}
@@ -412,32 +414,34 @@ TclFileDeleteCmd(interp, objc, objv)
 	} else {
 	    result = Tcl_FSDeleteFile(objv[i]);
 	}
-	
+
 	if (result != TCL_OK) {
 	    result = TCL_ERROR;
-	    /* 
-	     * It is important that we break on error, otherwise we
-	     * might end up owning reference counts on numerous
-	     * errorBuffers.
+
+	    /*
+	     * It is important that we break on error, otherwise we might end
+	     * up owning reference counts on numerous errorBuffers.
 	     */
+
 	    break;
 	}
     }
     if (result != TCL_OK) {
 	if (errfile == NULL) {
-	    /* 
-	     * We try to accomodate poor error results from our 
-	     * Tcl_FS calls 
+	    /*
+	     * We try to accomodate poor error results from our Tcl_FS calls.
 	     */
-	    Tcl_AppendResult(interp, "error deleting unknown file: ", 
-		    Tcl_PosixError(interp), (char *) NULL);
+
+	    Tcl_AppendResult(interp, "error deleting unknown file: ",
+		    Tcl_PosixError(interp), NULL);
 	} else {
-	    Tcl_AppendResult(interp, "error deleting \"", 
-		    Tcl_GetString(errfile), "\": ", 
-		    Tcl_PosixError(interp), (char *) NULL);
+	    Tcl_AppendResult(interp, "error deleting \"",
+		    TclGetString(errfile), "\": ", Tcl_PosixError(interp),
+		    NULL);
 	}
-    } 
-    done:
+    }
+
+  done:
     if (errorBuffer != NULL) {
 	Tcl_DecrRefCount(errorBuffer);
     }
@@ -449,37 +453,37 @@ TclFileDeleteCmd(interp, objc, objv)
  *
  * CopyRenameOneFile
  *
- *	Copies or renames specified source file or directory hierarchy
- *	to the specified target.  
+ *	Copies or renames specified source file or directory hierarchy to the
+ *	specified target.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Target is overwritten if the force flag is set.  Attempting to
- *	copy/rename a file onto a directory or a directory onto a file
- *	will always result in an error.  
+ *	Target is overwritten if the force flag is set. Attempting to
+ *	copy/rename a file onto a directory or a directory onto a file will
+ *	always result in an error.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-CopyRenameOneFile(interp, source, target, copyFlag, force) 
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Obj *source;		/* Pathname of file to copy.  May need to
-				 * be translated. */
-    Tcl_Obj *target;		/* Pathname of file to create/overwrite.
-				 * May need to be translated. */
-    int copyFlag;		/* If non-zero, copy files.  Otherwise,
-				 * rename them. */
-    int force;			/* If non-zero, overwrite target file if it
-				 * exists.  Otherwise, error if target already
+CopyRenameOneFile(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *source,		/* Pathname of file to copy. May need to be
+				 * translated. */
+    Tcl_Obj *target,		/* Pathname of file to create/overwrite. May
+				 * need to be translated. */
+    int copyFlag,		/* If non-zero, copy files. Otherwise, rename
+				 * them. */
+    int force)			/* If non-zero, overwrite target file if it
+				 * exists. Otherwise, error if target already
 				 * exists. */
 {
     int result;
     Tcl_Obj *errfile, *errorBuffer;
-    /* If source is a link, then this is the real file/directory */
-    Tcl_Obj *actualSource = NULL;
+    Tcl_Obj *actualSource=NULL;	/* If source is a link, then this is the real
+				 * file/directory. */
     Tcl_StatBuf sourceStatBuf, targetStatBuf;
 
     if (Tcl_FSConvertToPathType(interp, source) != TCL_OK) {
@@ -488,16 +492,15 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
     if (Tcl_FSConvertToPathType(interp, target) != TCL_OK) {
 	return TCL_ERROR;
     }
-    
+
     errfile = NULL;
     errorBuffer = NULL;
     result = TCL_ERROR;
-    
+
     /*
-     * We want to copy/rename links and not the files they point to, so we
-     * use lstat(). If target is a link, we also want to replace the 
-     * link and not the file it points to, so we also use lstat() on the
-     * target.
+     * We want to copy/rename links and not the files they point to, so we use
+     * lstat(). If target is a link, we also want to replace the link and not
+     * the file it points to, so we also use lstat() on the target.
      */
 
     if (Tcl_FSLstat(source, &sourceStatBuf) != 0) {
@@ -533,30 +536,48 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
 	}
 #endif
 
-
 	/*
-	 * Prevent copying/renaming a file onto a directory and
-	 * vice-versa.  This is a policy decision based on the fact that
-	 * existing implementations of copy and rename on all platforms
-	 * also prevent this.
+	 * Prevent copying/renaming a file onto a directory and vice-versa.
+	 * This is a policy decision based on the fact that existing
+	 * implementations of copy and rename on all platforms also prevent
+	 * this.
 	 */
 
 	if (S_ISDIR(sourceStatBuf.st_mode)
-                && !S_ISDIR(targetStatBuf.st_mode)) {
+		&& !S_ISDIR(targetStatBuf.st_mode)) {
 	    errno = EISDIR;
-	    Tcl_AppendResult(interp, "can't overwrite file \"", 
-		    Tcl_GetString(target), "\" with directory \"", 
-		    Tcl_GetString(source), "\"", (char *) NULL);
+	    Tcl_AppendResult(interp, "can't overwrite file \"",
+		    TclGetString(target), "\" with directory \"",
+		    TclGetString(source), "\"", NULL);
 	    goto done;
 	}
 	if (!S_ISDIR(sourceStatBuf.st_mode)
-	        && S_ISDIR(targetStatBuf.st_mode)) {
+		&& S_ISDIR(targetStatBuf.st_mode)) {
 	    errno = EISDIR;
-	    Tcl_AppendResult(interp, "can't overwrite directory \"", 
-		    Tcl_GetString(target), "\" with file \"", 
-		    Tcl_GetString(source), "\"", (char *) NULL);
+	    Tcl_AppendResult(interp, "can't overwrite directory \"",
+		    TclGetString(target), "\" with file \"",
+		    TclGetString(source), "\"", NULL);
 	    goto done;
 	}
+
+	/*
+	 * The destination exists, but appears to be ok to over-write, and
+	 * -force is given. We now try to adjust permissions to ensure the
+	 * operation succeeds. If we can't adjust permissions, we'll let the
+	 * actual copy/rename return an error later.
+	 */
+
+	{
+	    Tcl_Obj *perm;
+	    int index;
+
+	    TclNewLiteralStringObj(perm, "u+w");
+	    Tcl_IncrRefCount(perm);
+	    if (TclFSFileAttrIndex(target, "-permissions", &index) == TCL_OK) {
+		Tcl_FSFileAttrsSet(NULL, index, target, perm);
+	    }
+	    Tcl_DecrRefCount(perm);
+	}
     }
 
     if (copyFlag == 0) {
@@ -564,62 +585,95 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
 	if (result == TCL_OK) {
 	    goto done;
 	}
-	    
+
 	if (errno == EINVAL) {
-	    Tcl_AppendResult(interp, "error renaming \"", 
-		    Tcl_GetString(source), "\" to \"",
-		    Tcl_GetString(target), "\": trying to rename a volume or ",
-		    "move a directory into itself", (char *) NULL);
+	    Tcl_AppendResult(interp, "error renaming \"",
+		    TclGetString(source), "\" to \"", TclGetString(target),
+		    "\": trying to rename a volume or "
+		    "move a directory into itself", NULL);
 	    goto done;
 	} else if (errno != EXDEV) {
 	    errfile = target;
 	    goto done;
 	}
-	
+
 	/*
-	 * The rename failed because the move was across file systems.
-	 * Fall through to copy file and then remove original.  Note that
-	 * the low-level Tcl_FSRenameFileProc in the filesystem is allowed 
-	 * to implement cross-filesystem moves itself, if it desires.
+	 * The rename failed because the move was across file systems. Fall
+	 * through to copy file and then remove original. Note that the
+	 * low-level Tcl_FSRenameFileProc in the filesystem is allowed to
+	 * implement cross-filesystem moves itself, if it desires.
 	 */
     }
 
     actualSource = source;
     Tcl_IncrRefCount(actualSource);
+
+    /*
+     * Activate the following block to copy files instead of links. However
+     * Tcl's semantics currently say we should copy links, so any such change
+     * should be the subject of careful study on the consequences.
+     *
+     * Perhaps there could be an optional flag to 'file copy' to dictate which
+     * approach to use, with the default being _not_ to have this block
+     * active.
+     */
+
 #if 0
 #ifdef S_ISLNK
-    /* 
-     * To add a flag to make 'copy' copy links instead of files, we could
-     * add a condition to ignore this 'if' here.
-     */
     if (copyFlag && S_ISLNK(sourceStatBuf.st_mode)) {
-	/* 
-	 * We want to copy files not links.  Therefore we must follow the
-	 * link.  There are two purposes to this 'stat' call here.  First
-	 * we want to know if the linked-file/dir actually exists, and
-	 * second, in the block of code which follows, some 20 lines
-	 * down, we want to check if the thing is a file or directory.
+	/*
+	 * We want to copy files not links. Therefore we must follow the link.
+	 * There are two purposes to this 'stat' call here. First we want to
+	 * know if the linked-file/dir actually exists, and second, in the
+	 * block of code which follows, some 20 lines down, we want to check
+	 * if the thing is a file or directory.
 	 */
+
 	if (Tcl_FSStat(source, &sourceStatBuf) != 0) {
-	    /* Actual file doesn't exist */
-	    Tcl_AppendResult(interp, 
-		    "error copying \"", Tcl_GetString(source), 
-		    "\": the target of this link doesn't exist",
-		    (char *) NULL);
+	    /*
+	     * Actual file doesn't exist.
+	     */
+
+	    Tcl_AppendResult(interp, "error copying \"", TclGetString(source),
+		    "\": the target of this link doesn't exist", NULL);
 	    goto done;
 	} else {
 	    int counter = 0;
+
 	    while (1) {
 		Tcl_Obj *path = Tcl_FSLink(actualSource, NULL, 0);
 		if (path == NULL) {
 		    break;
 		}
+
+		/*
+		 * Now we want to check if this is a relative path, and if so,
+		 * to make it absolute.
+		 */
+
+		if (Tcl_FSGetPathType(path) == TCL_PATH_RELATIVE) {
+		    Tcl_Obj *abs = Tcl_FSJoinToPath(actualSource, 1, &path);
+
+		    if (abs == NULL) {
+			break;
+		    }
+		    Tcl_IncrRefCount(abs);
+		    Tcl_DecrRefCount(path);
+		    path = abs;
+		}
 		Tcl_DecrRefCount(actualSource);
 		actualSource = path;
 		counter++;
-		/* Arbitrary limit of 20 links to follow */
+
+		/*
+		 * Arbitrary limit of 20 links to follow.
+		 */
+
 		if (counter > 20) {
-		    /* Too many links */
+		    /*
+		     * Too many links.
+		     */
+
 		    Tcl_SetErrno(EMLINK);
 		    errfile = source;
 		    goto done;
@@ -628,47 +682,43 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
 	    /* Now 'actualSource' is the correct file */
 	}
     }
-#endif
+#endif /* S_ISLNK */
 #endif
 
     if (S_ISDIR(sourceStatBuf.st_mode)) {
 	result = Tcl_FSCopyDirectory(actualSource, target, &errorBuffer);
 	if (result != TCL_OK) {
 	    if (errno == EXDEV) {
-		/* 
+		/*
 		 * The copy failed because we're trying to do a
-		 * cross-filesystem copy.  We do this through our Tcl
-		 * library.
+		 * cross-filesystem copy. We do this through our Tcl library.
 		 */
-		Tcl_SavedResult savedResult;
-		Tcl_Obj *copyCommand = Tcl_NewListObj(0,NULL);
-		Tcl_IncrRefCount(copyCommand);
-		Tcl_ListObjAppendElement(interp, copyCommand, 
-			Tcl_NewStringObj("::tcl::CopyDirectory",-1));
+
+		Tcl_Obj *copyCommand, *cmdObj, *opObj;
+
+		TclNewObj(copyCommand);
+		TclNewLiteralStringObj(cmdObj, "::tcl::CopyDirectory");
+		Tcl_ListObjAppendElement(interp, copyCommand, cmdObj);
 		if (copyFlag) {
-		    Tcl_ListObjAppendElement(interp, copyCommand, 
-					     Tcl_NewStringObj("copying",-1));
+		    TclNewLiteralStringObj(opObj, "copying");
 		} else {
-		    Tcl_ListObjAppendElement(interp, copyCommand, 
-					     Tcl_NewStringObj("renaming",-1));
+		    TclNewLiteralStringObj(opObj, "renaming");
 		}
+		Tcl_ListObjAppendElement(interp, copyCommand, opObj);
 		Tcl_ListObjAppendElement(interp, copyCommand, source);
 		Tcl_ListObjAppendElement(interp, copyCommand, target);
-		Tcl_SaveResult(interp, &savedResult);
-		result = Tcl_EvalObjEx(interp, copyCommand, 
-				       TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT);
+		Tcl_IncrRefCount(copyCommand);
+		result = Tcl_EvalObjEx(interp, copyCommand,
+			TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT);
 		Tcl_DecrRefCount(copyCommand);
 		if (result != TCL_OK) {
-		    /* 
-		     * There was an error in the Tcl-level copy.
-		     * We will pass on the Tcl error message and
-		     * can ensure this by setting errfile to NULL
+		    /*
+		     * There was an error in the Tcl-level copy. We will pass
+		     * on the Tcl error message and can ensure this by setting
+		     * errfile to NULL
 		     */
-		    Tcl_DiscardResult(&savedResult);
+
 		    errfile = NULL;
-		} else {
-		    /* The copy was successful */
-		    Tcl_RestoreResult(interp, &savedResult);
 		}
 	    } else {
 		errfile = errorBuffer;
@@ -685,19 +735,22 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
 	    result = TclCrossFilesystemCopy(interp, source, target);
 	}
 	if (result != TCL_OK) {
-	    /* 
-	     * We could examine 'errno' to double-check if the problem
-	     * was with the target, but we checked the source above,
-	     * so it should be quite clear 
+	    /*
+	     * We could examine 'errno' to double-check if the problem was
+	     * with the target, but we checked the source above, so it should
+	     * be quite clear
 	     */
+
 	    errfile = target;
-	    /* 
-	     * We now need to reset the result, because the above call,
-	     * if it failed, may have put an error message in place.
-	     * (Ideally we would prefer not to pass an interpreter in
-	     * above, but the channel IO code used by
-	     * TclCrossFilesystemCopy currently requires one)
+
+	    /*
+	     * We now need to reset the result, because the above call, if it
+	     * failed, may have put an error message in place. (Ideally we
+	     * would prefer not to pass an interpreter in above, but the
+	     * channel IO code used by TclCrossFilesystemCopy currently
+	     * requires one).
 	     */
+
 	    Tcl_ResetResult(interp);
 	}
     }
@@ -716,31 +769,26 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
 	    }
 	}
 	if (result != TCL_OK) {
-	    Tcl_AppendResult(interp, "can't unlink \"", 
-		Tcl_GetString(errfile), "\": ",
-		Tcl_PosixError(interp), (char *) NULL);
+	    Tcl_AppendResult(interp, "can't unlink \"", TclGetString(errfile),
+		    "\": ", Tcl_PosixError(interp), NULL);
 	    errfile = NULL;
 	}
     }
-    
-    done:
+
+  done:
     if (errfile != NULL) {
-	Tcl_AppendResult(interp, 
-		((copyFlag) ? "error copying \"" : "error renaming \""),
-		 Tcl_GetString(source), (char *) NULL);
+	Tcl_AppendResult(interp, "error ", (copyFlag ? "copying" : "renaming"),
+		 " \"", TclGetString(source), NULL);
 	if (errfile != source) {
-	    Tcl_AppendResult(interp, "\" to \"", Tcl_GetString(target), 
-			     (char *) NULL);
+	    Tcl_AppendResult(interp, "\" to \"", TclGetString(target), NULL);
 	    if (errfile != target) {
-		Tcl_AppendResult(interp, "\": \"", Tcl_GetString(errfile), 
-				 (char *) NULL);
+		Tcl_AppendResult(interp, "\": \"", TclGetString(errfile),NULL);
 	    }
 	}
-	Tcl_AppendResult(interp, "\": ", Tcl_PosixError(interp),
-		(char *) NULL);
+	Tcl_AppendResult(interp, "\": ", Tcl_PosixError(interp), NULL);
     }
     if (errorBuffer != NULL) {
-        Tcl_DecrRefCount(errorBuffer);
+	Tcl_DecrRefCount(errorBuffer);
     }
     if (actualSource != NULL) {
 	Tcl_DecrRefCount(actualSource);
@@ -753,14 +801,13 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
  *
  * FileForceOption --
  *
- *	Helps parse command line options for file commands that take
- *	the "-force" and "--" options.
+ *	Helps parse command line options for file commands that take the
+ *	"-force" and "--" options.
  *
  * Results:
- *	The return value is how many arguments from argv were consumed
- *	by this function, or -1 if there was an error parsing the
- *	options.  If an error occurred, an error message is left in the
- *	interp's result.
+ *	The return value is how many arguments from argv were consumed by this
+ *	function, or -1 if there was an error parsing the options. If an error
+ *	occurred, an error message is left in the interp's result.
  *
  * Side effects:
  *	None.
@@ -769,29 +816,29 @@ CopyRenameOneFile(interp, source, target, copyFlag, force)
  */
 
 static int
-FileForceOption(interp, objc, objv, forcePtr)
-    Tcl_Interp *interp;		/* Interp, for error return. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument strings.  First command line
+FileForceOption(
+    Tcl_Interp *interp,		/* Interp, for error return. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[],	/* Argument strings.  First command line
 				 * option, if it exists, begins at 0. */
-    int *forcePtr;		/* If the "-force" was specified, *forcePtr
-				 * is filled with 1, otherwise with 0. */
+    int *forcePtr)		/* If the "-force" was specified, *forcePtr is
+				 * filled with 1, otherwise with 0. */
 {
     int force, i;
-    
+
     force = 0;
     for (i = 0; i < objc; i++) {
-	if (Tcl_GetString(objv[i])[0] != '-') {
+	if (TclGetString(objv[i])[0] != '-') {
 	    break;
 	}
-	if (strcmp(Tcl_GetString(objv[i]), "-force") == 0) {
+	if (strcmp(TclGetString(objv[i]), "-force") == 0) {
 	    force = 1;
-	} else if (strcmp(Tcl_GetString(objv[i]), "--") == 0) {
+	} else if (strcmp(TclGetString(objv[i]), "--") == 0) {
 	    i++;
 	    break;
 	} else {
-	    Tcl_AppendResult(interp, "bad option \"", Tcl_GetString(objv[i]), 
-		    "\": should be -force or --", (char *)NULL);
+	    Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[i]),
+		    "\": should be -force or --", NULL);
 	    return -1;
 	}
     }
@@ -805,13 +852,12 @@ FileForceOption(interp, objc, objv, forcePtr)
  *
  *	Given a path in either tcl format (with / separators), or in the
  *	platform-specific format for the current platform, return all the
- *	characters in the path after the last directory separator.  But,
- *	if path is the root directory, returns no characters.
+ *	characters in the path after the last directory separator. But, if
+ *	path is the root directory, returns no characters.
  *
  * Results:
- *	Returns the string object that represents the basename.  If there 
- *	is an error, an error message is left in interp, and NULL is 
- *	returned.
+ *	Returns the string object that represents the basename. If there is an
+ *	error, an error message is left in interp, and NULL is returned.
  *
  * Side effects:
  *	None.
@@ -820,23 +866,25 @@ FileForceOption(interp, objc, objv, forcePtr)
  */
 
 static Tcl_Obj *
-FileBasename(interp, pathPtr)
-    Tcl_Interp *interp;		/* Interp, for error return. */
-    Tcl_Obj *pathPtr;		/* Path whose basename to extract. */
+FileBasename(
+    Tcl_Interp *interp,		/* Interp, for error return. */
+    Tcl_Obj *pathPtr)		/* Path whose basename to extract. */
 {
     int objc;
     Tcl_Obj *splitPtr;
     Tcl_Obj *resultPtr = NULL;
-    
+
     splitPtr = Tcl_FSSplitPath(pathPtr, &objc);
+    Tcl_IncrRefCount(splitPtr);
 
     if (objc != 0) {
-	if ((objc == 1) && (*Tcl_GetString(pathPtr) == '~')) {
+	if ((objc == 1) && (*TclGetString(pathPtr) == '~')) {
 	    Tcl_DecrRefCount(splitPtr);
 	    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
 		return NULL;
 	    }
 	    splitPtr = Tcl_FSSplitPath(pathPtr, &objc);
+	    Tcl_IncrRefCount(splitPtr);
 	}
 
 	/*
@@ -847,7 +895,7 @@ FileBasename(interp, pathPtr)
 	if (objc > 0) {
 	    Tcl_ListObjIndex(NULL, splitPtr, objc-1, &resultPtr);
 	    if ((objc == 1) &&
-	      (Tcl_FSGetPathType(resultPtr) != TCL_PATH_RELATIVE)) {
+		    (Tcl_FSGetPathType(resultPtr) != TCL_PATH_RELATIVE)) {
 		resultPtr = NULL;
 	    }
 	}
@@ -865,48 +913,46 @@ FileBasename(interp, pathPtr)
  *
  * TclFileAttrsCmd --
  *
- *      Sets or gets the platform-specific attributes of a file.  The
- *      objc-objv points to the file name with the rest of the command
- *      line following.  This routine uses platform-specific tables of
- *      option strings and callbacks.  The callback to get the
- *      attributes take three parameters:
- *	    Tcl_Interp *interp;	    The interp to report errors with.
- *				    Since this is an object-based API,
- *				    the object form of the result should 
- *				    be used.
+ *	Sets or gets the platform-specific attributes of a file. The objc-objv
+ *	points to the file name with the rest of the command line following.
+ *	This routine uses platform-specific tables of option strings and
+ *	callbacks. The callback to get the attributes take three parameters:
+ *	    Tcl_Interp *interp;	    The interp to report errors with. Since
+ *				    this is an object-based API, the object
+ *				    form of the result should be used.
  *	    CONST char *fileName;   This is extracted using
  *				    Tcl_TranslateFileName.
- *	    TclObj **attrObjPtrPtr; A new object to hold the attribute
- *				    is allocated and put here.
+ *	    TclObj **attrObjPtrPtr; A new object to hold the attribute is
+ *				    allocated and put here.
  *	The first two parameters of the callback used to write out the
  *	attributes are the same. The third parameter is:
- *	    CONST *attrObjPtr;	    A pointer to the object that has
- *				    the new attribute.
- *	They both return standard TCL errors; if the routine to get
- *	an attribute fails, no object is allocated and *attrObjPtrPtr
- *	is unchanged.
+ *	    CONST *attrObjPtr;	    A pointer to the object that has the new
+ *				    attribute.
+ *	They both return standard TCL errors; if the routine to get an
+ *	attribute fails, no object is allocated and *attrObjPtrPtr is
+ *	unchanged.
  *
  * Results:
- *      Standard TCL error.
+ *	Standard TCL error.
  *
  * Side effects:
- *      May set file attributes for the file name.
- *      
+ *	May set file attributes for the file name.
+ *
  *----------------------------------------------------------------------
  */
 
 int
-TclFileAttrsCmd(interp, objc, objv)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int objc;			/* Number of command line arguments. */
-    Tcl_Obj *CONST objv[];	/* The command line objects. */
+TclFileAttrsCmd(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int objc,			/* Number of command line arguments. */
+    Tcl_Obj *CONST objv[])	/* The command line objects. */
 {
     int result;
     CONST char ** attributeStrings;
     Tcl_Obj* objStrings = NULL;
-    int numObjStrings = -1;
+    int numObjStrings = -1, didAlloc = 0;
     Tcl_Obj *filePtr;
-    
+
     if (objc < 3) {
 	Tcl_WrongNumArgs(interp, 2, objv,
 		"name ?option? ?value? ?option value ...?");
@@ -917,64 +963,95 @@ TclFileAttrsCmd(interp, objc, objv)
     if (Tcl_FSConvertToPathType(interp, filePtr) != TCL_OK) {
     	return TCL_ERROR;
     }
-    
+
     objc -= 3;
     objv += 3;
     result = TCL_ERROR;
     Tcl_SetErrno(0);
+
     attributeStrings = Tcl_FSFileAttrStrings(filePtr, &objStrings);
     if (attributeStrings == NULL) {
 	int index;
 	Tcl_Obj *objPtr;
+
 	if (objStrings == NULL) {
 	    if (Tcl_GetErrno() != 0) {
-		/* 
-		 * There was an error, probably that the filePtr is
-		 * not accepted by any filesystem
+		/*
+		 * There was an error, probably that the filePtr is not
+		 * accepted by any filesystem
 		 */
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), 
-			"could not read \"", Tcl_GetString(filePtr), 
-			"\": ", Tcl_PosixError(interp), 
-			(char *) NULL);
-		return TCL_ERROR;
+		Tcl_AppendResult(interp, "could not read \"",
+			TclGetString(filePtr), "\": ", Tcl_PosixError(interp),
+			NULL);
 	    }
-	    goto end;
+	    return TCL_ERROR;
 	}
-	/* We own the object now */
+
+	/*
+	 * We own the object now.
+	 */
+
 	Tcl_IncrRefCount(objStrings);
-        /* Use objStrings as a list object */
+
+	/*
+	 * Use objStrings as a list object.
+	 */
+
 	if (Tcl_ListObjLength(interp, objStrings, &numObjStrings) != TCL_OK) {
 	    goto end;
 	}
-	attributeStrings = (CONST char **)
-		ckalloc ((1+numObjStrings) * sizeof(char*));
+	attributeStrings = (CONST char **) TclStackAlloc(interp,
+		(1+numObjStrings) * sizeof(char*));
+	didAlloc = 1;
 	for (index = 0; index < numObjStrings; index++) {
 	    Tcl_ListObjIndex(interp, objStrings, index, &objPtr);
-	    attributeStrings[index] = Tcl_GetString(objPtr);
+	    attributeStrings[index] = TclGetString(objPtr);
 	}
 	attributeStrings[index] = NULL;
+    } else if (objStrings != NULL) {
+	Tcl_Panic("must not update objPtrRef's variable and return non-NULL");
     }
+
     if (objc == 0) {
 	/*
 	 * Get all attributes.
 	 */
 
-	int index;
+	int index, res = TCL_OK, nbAtts = 0;
 	Tcl_Obj *listPtr;
-	 
+
 	listPtr = Tcl_NewListObj(0, NULL);
 	for (index = 0; attributeStrings[index] != NULL; index++) {
-	    Tcl_Obj *objPtr = Tcl_NewStringObj(attributeStrings[index], -1);
-	    Tcl_ListObjAppendElement(interp, listPtr, objPtr);
-	    /* We now forget about objPtr, it is in the list */
-	    objPtr = NULL;
-	    if (Tcl_FSFileAttrsGet(interp, index, filePtr,
-		    &objPtr) != TCL_OK) {
-		Tcl_DecrRefCount(listPtr);
-		goto end;
+	    Tcl_Obj *objPtrAttr;
+
+	    if (res != TCL_OK) {
+		/*
+		 * Clear the error from the last iteration.
+		 */
+
+		Tcl_ResetResult(interp);
+	    }
+
+	    res = Tcl_FSFileAttrsGet(interp, index, filePtr, &objPtrAttr);
+	    if (res == TCL_OK) {
+		Tcl_Obj *objPtr =
+			Tcl_NewStringObj(attributeStrings[index], -1);
+
+		Tcl_ListObjAppendElement(interp, listPtr, objPtr);
+		Tcl_ListObjAppendElement(interp, listPtr, objPtrAttr);
+		nbAtts++;
 	    }
-	    Tcl_ListObjAppendElement(interp, listPtr, objPtr);
 	}
+
+	if (index > 0 && nbAtts == 0) {
+	    /*
+	     * Error: no valid attributes found.
+	     */
+
+	    Tcl_DecrRefCount(listPtr);
+	    goto end;
+	}
+
     	Tcl_SetObjResult(interp, listPtr);
     } else if (objc == 1) {
 	/*
@@ -985,9 +1062,9 @@ TclFileAttrsCmd(interp, objc, objv)
 	Tcl_Obj *objPtr = NULL;
 
 	if (numObjStrings == 0) {
-	    Tcl_AppendResult(interp, "bad option \"",
-		    Tcl_GetString(objv[0]), "\", there are no file attributes"
-			     " in this filesystem.", (char *) NULL);
+	    Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[0]),
+		    "\", there are no file attributes in this filesystem.",
+		    NULL);
 	    goto end;
 	}
 
@@ -995,9 +1072,8 @@ TclFileAttrsCmd(interp, objc, objv)
 		"option", 0, &index) != TCL_OK) {
 	    goto end;
 	}
-	if (numObjStrings != -1 && objv[0]->typePtr != NULL
-		&& objv[0]->typePtr->freeIntRepProc != NULL) {
-	    objv[0]->typePtr->freeIntRepProc(objv[0]);
+	if (didAlloc) {
+	    TclFreeIntRep(objv[0]);
 	    objv[0]->typePtr = NULL;
 	}
 	if (Tcl_FSFileAttrsGet(interp, index, filePtr,
@@ -1011,11 +1087,11 @@ TclFileAttrsCmd(interp, objc, objv)
 	 */
 
 	int i, index;
-        
+
 	if (numObjStrings == 0) {
-	    Tcl_AppendResult(interp, "bad option \"",
-		    Tcl_GetString(objv[0]), "\", there are no file attributes"
-			     " in this filesystem.", (char *) NULL);
+	    Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[0]),
+		    "\", there are no file attributes in this filesystem.",
+		    NULL);
 	    goto end;
 	}
 
@@ -1024,15 +1100,13 @@ TclFileAttrsCmd(interp, objc, objv)
 		    "option", 0, &index) != TCL_OK) {
 		goto end;
     	    }
-	    if (numObjStrings != -1 && objv[i]->typePtr != NULL
-		    && objv[i]->typePtr->freeIntRepProc != NULL) {
-		objv[i]->typePtr->freeIntRepProc(objv[i]);
+	    if (didAlloc) {
+		TclFreeIntRep(objv[i]);
 		objv[i]->typePtr = NULL;
 	    }
 	    if (i + 1 == objc) {
 		Tcl_AppendResult(interp, "value for \"",
-			Tcl_GetString(objv[i]), "\" missing",
-			(char *) NULL);
+			TclGetString(objv[i]), "\" missing", NULL);
 		goto end;
 	    }
     	    if (Tcl_FSFileAttrsSet(interp, index, filePtr,
@@ -1043,17 +1117,29 @@ TclFileAttrsCmd(interp, objc, objv)
     }
     result = TCL_OK;
 
-    end:
-    if (numObjStrings != -1) {
-	/* Free up the array we allocated */
-	ckfree((char*)attributeStrings);
-	/* 
-	 * We don't need this object that was passed to us
-	 * any more.
+  end:
+    if (didAlloc) {
+	/*
+	 * Free up the array we allocated.
 	 */
-	if (objStrings != NULL) {
-	    Tcl_DecrRefCount(objStrings);
-	}
+
+	TclStackFree(interp, (void *)attributeStrings);
+    }
+
+    if (objStrings != NULL) {
+	/*
+	 * We don't need this object that was passed to us any more.
+	 */
+
+	Tcl_DecrRefCount(objStrings);
     }
     return result;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclFileName.c b/generic/tclFileName.c
index bcaadd4..07757d9 100644
--- a/generic/tclFileName.c
+++ b/generic/tclFileName.c
@@ -1,24 +1,23 @@
-/* 
+/*
  * tclFileName.c --
  *
- *	This file contains routines for converting file names betwen
- *	native and network form.
+ *	This file contains routines for converting file names betwen native
+ *	and network form.
  *
  * Copyright (c) 1995-1998 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include <sys/stat.h>
 #include "tclInt.h"
-#include "tclPort.h"
 #include "tclRegexp.h"
+#include "tclFileSystem.h" /* For TclGetPathType() */
 
 /*
- * The following variable is set in the TclPlatformInit call to one
- * of: TCL_PLATFORM_UNIX, or TCL_PLATFORM_WINDOWS.
+ * The following variable is set in the TclPlatformInit call to one of:
+ * TCL_PLATFORM_UNIX or TCL_PLATFORM_WINDOWS.
  */
 
 TclPlatformType tclPlatform = TCL_PLATFORM_UNIX;
@@ -27,29 +26,60 @@ TclPlatformType tclPlatform = TCL_PLATFORM_UNIX;
  * Prototypes for local procedures defined in this file:
  */
 
-static CONST char *	DoTildeSubst _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *user, Tcl_DString *resultPtr));
-static CONST char *	ExtractWinRoot _ANSI_ARGS_((CONST char *path,
-			    Tcl_DString *resultPtr, int offset, 
-			    Tcl_PathType *typePtr));
-static int		SkipToChar _ANSI_ARGS_((char **stringPtr,
-			    char *match));
-static Tcl_Obj*		SplitWinPath _ANSI_ARGS_((CONST char *path));
-static Tcl_Obj*		SplitUnixPath _ANSI_ARGS_((CONST char *path));
+static const char *	DoTildeSubst(Tcl_Interp *interp,
+			    const char *user, Tcl_DString *resultPtr);
+static const char *	ExtractWinRoot(const char *path,
+			    Tcl_DString *resultPtr, int offset,
+			    Tcl_PathType *typePtr);
+static int		SkipToChar(char **stringPtr, int match);
+static Tcl_Obj *	SplitWinPath(const char *path);
+static Tcl_Obj *	SplitUnixPath(const char *path);
+static int		DoGlob(Tcl_Interp *interp, Tcl_Obj *resultPtr,
+			    const char *separators, Tcl_Obj *pathPtr, int flags,
+			    char *pattern, Tcl_GlobTypeData *types);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetResultLength --
+ *
+ *	Resets the result DString for ExtractWinRoot to accommodate
+ *	any NT extended path prefixes.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May modify the Tcl_DString.
+ *----------------------------------------------------------------------
+ */
+
+static void
+SetResultLength(
+    Tcl_DString *resultPtr,
+    int offset,
+    int extended)
+{
+    Tcl_DStringSetLength(resultPtr, offset);
+    if (extended == 2) {
+	Tcl_DStringAppend(resultPtr, "//?/UNC/", 8);
+    } else if (extended == 1) {
+	Tcl_DStringAppend(resultPtr, "//?/", 4);
+    }
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * ExtractWinRoot --
  *
- *	Matches the root portion of a Windows path and appends it
- *	to the specified Tcl_DString.
- *	
+ *	Matches the root portion of a Windows path and appends it to the
+ *	specified Tcl_DString.
+ *
  * Results:
- *	Returns the position in the path immediately after the root
- *	including any trailing slashes.
- *	Appends a cleaned up version of the root to the Tcl_DString
- *	at the specified offest.
+ *	Returns the position in the path immediately after the root including
+ *	any trailing slashes. Appends a cleaned up version of the root to the
+ *	Tcl_DString at the specified offest.
  *
  * Side effects:
  *	Modifies the specified Tcl_DString.
@@ -57,59 +87,88 @@ static Tcl_Obj*		SplitUnixPath _ANSI_ARGS_((CONST char *path));
  *----------------------------------------------------------------------
  */
 
-static CONST char *
-ExtractWinRoot(path, resultPtr, offset, typePtr)
-    CONST char *path;		/* Path to parse. */
-    Tcl_DString *resultPtr;	/* Buffer to hold result. */
-    int offset;			/* Offset in buffer where result should be
+static const char *
+ExtractWinRoot(
+    const char *path,		/* Path to parse. */
+    Tcl_DString *resultPtr,	/* Buffer to hold result. */
+    int offset,			/* Offset in buffer where result should be
 				 * stored. */
-    Tcl_PathType *typePtr;	/* Where to store pathType result */
+    Tcl_PathType *typePtr)	/* Where to store pathType result */
 {
+    int extended = 0;
+
+    if (   (path[0] == '/' || path[0] == '\\')
+	&& (path[1] == '/' || path[1] == '\\')
+	&& (path[2] == '?')
+	&& (path[3] == '/' || path[3] == '\\')) {
+	extended = 1;
+	path = path + 4;
+	if (path[0] == 'U' && path[1] == 'N' && path[2] == 'C'
+	    && (path[3] == '/' || path[3] == '\\')) {
+	    extended = 2;
+	    path = path + 4;
+	}
+    }
+
     if (path[0] == '/' || path[0] == '\\') {
-	/* Might be a UNC or Vol-Relative path */
-	CONST char *host, *share, *tail;
+	/*
+	 * Might be a UNC or Vol-Relative path.
+	 */
+
+	const char *host, *share, *tail;
 	int hlen, slen;
+
 	if (path[1] != '/' && path[1] != '\\') {
-	    Tcl_DStringSetLength(resultPtr, offset);
+	    SetResultLength(resultPtr, offset, extended);
 	    *typePtr = TCL_PATH_VOLUME_RELATIVE;
 	    Tcl_DStringAppend(resultPtr, "/", 1);
 	    return &path[1];
 	}
 	host = &path[2];
 
-	/* Skip separators */
-	while (host[0] == '/' || host[0] == '\\') host++;
+	/*
+	 * Skip separators.
+	 */
+
+	while (host[0] == '/' || host[0] == '\\') {
+	    host++;
+	}
 
 	for (hlen = 0; host[hlen];hlen++) {
-	    if (host[hlen] == '/' || host[hlen] == '\\')
+	    if (host[hlen] == '/' || host[hlen] == '\\') {
 		break;
+	    }
 	}
 	if (host[hlen] == 0 || host[hlen+1] == 0) {
-	    /* 
-	     * The path given is simply of the form 
-	     * '/foo', '//foo', '/////foo' or the same
-	     * with backslashes.  If there is exactly
-	     * one leading '/' the path is volume relative
-	     * (see filename man page).  If there are more
-	     * than one, we are simply assuming they
-	     * are superfluous and we trim them away.
-	     * (An alternative interpretation would
-	     * be that it is a host name, but we have
+	    /*
+	     * The path given is simply of the form '/foo', '//foo',
+	     * '/////foo' or the same with backslashes. If there is exactly
+	     * one leading '/' the path is volume relative (see filename man
+	     * page). If there are more than one, we are simply assuming they
+	     * are superfluous and we trim them away. (An alternative
+	     * interpretation would be that it is a host name, but we have
 	     * been documented that that is not the case).
 	     */
+
 	    *typePtr = TCL_PATH_VOLUME_RELATIVE;
 	    Tcl_DStringAppend(resultPtr, "/", 1);
 	    return &path[2];
 	}
-	Tcl_DStringSetLength(resultPtr, offset);
+	SetResultLength(resultPtr, offset, extended);
 	share = &host[hlen];
 
-	/* Skip separators */
-	while (share[0] == '/' || share[0] == '\\') share++;
+	/*
+	 * Skip separators.
+	 */
+
+	while (share[0] == '/' || share[0] == '\\') {
+	    share++;
+	}
 
-	for (slen = 0; share[slen];slen++) {
-	    if (share[slen] == '/' || share[slen] == '\\')
+	for (slen=0; share[slen]; slen++) {
+	    if (share[slen] == '/' || share[slen] == '\\') {
 		break;
+	    }
 	}
 	Tcl_DStringAppend(resultPtr, "//", 2);
 	Tcl_DStringAppend(resultPtr, host, hlen);
@@ -118,24 +177,37 @@ ExtractWinRoot(path, resultPtr, offset, typePtr)
 
 	tail = &share[slen];
 
-	/* Skip separators */
-	while (tail[0] == '/' || tail[0] == '\\') tail++;
+	/*
+	 * Skip separators.
+	 */
+
+	while (tail[0] == '/' || tail[0] == '\\') {
+	    tail++;
+	}
 
 	*typePtr = TCL_PATH_ABSOLUTE;
 	return tail;
     } else if (*path && path[1] == ':') {
-	/* Might be a drive sep */
-	Tcl_DStringSetLength(resultPtr, offset);
+	/*
+	 * Might be a drive separator.
+	 */
+
+	SetResultLength(resultPtr, offset, extended);
 
 	if (path[2] != '/' && path[2] != '\\') {
 	    *typePtr = TCL_PATH_VOLUME_RELATIVE;
 	    Tcl_DStringAppend(resultPtr, path, 2);
 	    return &path[2];
 	} else {
-	    char *tail = (char*)&path[3];
+	    const char *tail = &path[3];
 
-	    /* Skip separators */
-	    while (*tail && (tail[0] == '/' || tail[0] == '\\')) tail++;
+	    /*
+	     * Skip separators.
+	     */
+
+	    while (*tail && (tail[0] == '/' || tail[0] == '\\')) {
+		tail++;
+	    }
 
 	    *typePtr = TCL_PATH_ABSOLUTE;
 	    Tcl_DStringAppend(resultPtr, path, 2);
@@ -145,58 +217,90 @@ ExtractWinRoot(path, resultPtr, offset, typePtr)
 	}
     } else {
 	int abs = 0;
-	if ((path[0] == 'c' || path[0] == 'C') 
-	    && (path[1] == 'o' || path[1] == 'O')) {
+
+	/*
+	 * Check for Windows devices.
+	 */
+
+	if ((path[0] == 'c' || path[0] == 'C')
+		&& (path[1] == 'o' || path[1] == 'O')) {
 	    if ((path[2] == 'm' || path[2] == 'M')
-		&& path[3] >= '1' && path[3] <= '4') {
-		/* May have match for 'com[1-4]:?', which is a serial port */
+		    && path[3] >= '1' && path[3] <= '4') {
+		/*
+		 * May have match for 'com[1-4]:?', which is a serial port.
+		 */
+
 		if (path[4] == '\0') {
 		    abs = 4;
 		} else if (path [4] == ':' && path[5] == '\0') {
 		    abs = 5;
 		}
+
 	    } else if ((path[2] == 'n' || path[2] == 'N') && path[3] == '\0') {
-		/* Have match for 'con' */
+		/*
+		 * Have match for 'con'.
+		 */
+
 		abs = 3;
 	    }
+
 	} else if ((path[0] == 'l' || path[0] == 'L')
-		   && (path[1] == 'p' || path[1] == 'P')
-		   && (path[2] == 't' || path[2] == 'T')) {
+		&& (path[1] == 'p' || path[1] == 'P')
+		&& (path[2] == 't' || path[2] == 'T')) {
 	    if (path[3] >= '1' && path[3] <= '3') {
-		/* May have match for 'lpt[1-3]:?' */
+		/*
+		 * May have match for 'lpt[1-3]:?'
+		 */
+
 		if (path[4] == '\0') {
 		    abs = 4;
 		} else if (path [4] == ':' && path[5] == '\0') {
 		    abs = 5;
 		}
 	    }
+
 	} else if ((path[0] == 'p' || path[0] == 'P')
-		   && (path[1] == 'r' || path[1] == 'R')
-		   && (path[2] == 'n' || path[2] == 'N')
-		   && path[3] == '\0') {
-	    /* Have match for 'prn' */
+		&& (path[1] == 'r' || path[1] == 'R')
+		&& (path[2] == 'n' || path[2] == 'N')
+		&& path[3] == '\0') {
+	    /*
+	     * Have match for 'prn'.
+	     */
 	    abs = 3;
+
 	} else if ((path[0] == 'n' || path[0] == 'N')
-		   && (path[1] == 'u' || path[1] == 'U')
-		   && (path[2] == 'l' || path[2] == 'L')
-		   && path[3] == '\0') {
-	    /* Have match for 'nul' */
+		&& (path[1] == 'u' || path[1] == 'U')
+		&& (path[2] == 'l' || path[2] == 'L')
+		&& path[3] == '\0') {
+	    /*
+	     * Have match for 'nul'.
+	     */
+
 	    abs = 3;
+
 	} else if ((path[0] == 'a' || path[0] == 'A')
-		   && (path[1] == 'u' || path[1] == 'U')
-		   && (path[2] == 'x' || path[2] == 'X')
-		   && path[3] == '\0') {
-	    /* Have match for 'aux' */
+		&& (path[1] == 'u' || path[1] == 'U')
+		&& (path[2] == 'x' || path[2] == 'X')
+		&& path[3] == '\0') {
+	    /*
+	     * Have match for 'aux'.
+	     */
+
 	    abs = 3;
 	}
+
 	if (abs != 0) {
 	    *typePtr = TCL_PATH_ABSOLUTE;
-	    Tcl_DStringSetLength(resultPtr, offset);
+	    SetResultLength(resultPtr, offset, extended);
 	    Tcl_DStringAppend(resultPtr, path, abs);
 	    return path + abs;
 	}
     }
-    /* Anything else is treated as relative */
+
+    /*
+     * Anything else is treated as relative.
+     */
+
     *typePtr = TCL_PATH_RELATIVE;
     return path;
 }
@@ -206,12 +310,12 @@ ExtractWinRoot(path, resultPtr, offset, typePtr)
  *
  * Tcl_GetPathType --
  *
- *	Determines whether a given path is relative to the current
- *	directory, relative to the current volume, or absolute.
- *	
- *	The objectified Tcl_FSGetPathType should be used in
- *	preference to this function (as you can see below, this
- *	is just a wrapper around that other function).
+ *	Determines whether a given path is relative to the current directory,
+ *	relative to the current volume, or absolute.
+ *
+ *	The objectified Tcl_FSGetPathType should be used in preference to this
+ *	function (as you can see below, this is just a wrapper around that
+ *	other function).
  *
  * Results:
  *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
@@ -224,11 +328,12 @@ ExtractWinRoot(path, resultPtr, offset, typePtr)
  */
 
 Tcl_PathType
-Tcl_GetPathType(path)
-    CONST char *path;
+Tcl_GetPathType(
+    const char *path)
 {
     Tcl_PathType type;
     Tcl_Obj *tempObj = Tcl_NewStringObj(path,-1);
+
     Tcl_IncrRefCount(tempObj);
     type = Tcl_FSGetPathType(tempObj);
     Tcl_DecrRefCount(tempObj);
@@ -240,12 +345,18 @@ Tcl_GetPathType(path)
  *
  * TclpGetNativePathType --
  *
- *	Determines whether a given path is relative to the current
- *	directory, relative to the current volume, or absolute, but
- *	ONLY FOR THE NATIVE FILESYSTEM. This function is called from
- *	tclIOUtil.c (but needs to be here due to its dependence on
- *	static variables/functions in this file).  The exported
- *	function Tcl_FSGetPathType should be used by extensions.
+ *	Determines whether a given path is relative to the current directory,
+ *	relative to the current volume, or absolute, but ONLY FOR THE NATIVE
+ *	FILESYSTEM. This function is called from tclIOUtil.c (but needs to be
+ *	here due to its dependence on static variables/functions in this
+ *	file). The exported function Tcl_FSGetPathType should be used by
+ *	extensions.
+ *
+ *	Note that '~' paths are always considered TCL_PATH_ABSOLUTE, even
+ *	though expanding the '~' could lead to any possible path type. This
+ *	function should therefore be considered a low-level, string
+ *	manipulation function only -- it doesn't actually do any expansion in
+ *	making its determination.
  *
  * Results:
  *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
@@ -258,22 +369,24 @@ Tcl_GetPathType(path)
  */
 
 Tcl_PathType
-TclpGetNativePathType(pathObjPtr, driveNameLengthPtr, driveNameRef)
-    Tcl_Obj *pathObjPtr;
-    int *driveNameLengthPtr;
-    Tcl_Obj **driveNameRef;
+TclpGetNativePathType(
+    Tcl_Obj *pathPtr,		/* Native path of interest */
+    int *driveNameLengthPtr,	/* Returns length of drive, if non-NULL and
+				 * path was absolute */
+    Tcl_Obj **driveNameRef)
 {
     Tcl_PathType type = TCL_PATH_ABSOLUTE;
     int pathLen;
-    char *path = Tcl_GetStringFromObj(pathObjPtr, &pathLen);
-    
+    const char *path = Tcl_GetStringFromObj(pathPtr, &pathLen);
+
     if (path[0] == '~') {
-	/* 
-	 * This case is common to all platforms.
-	 * Paths that begin with ~ are absolute.
+	/*
+	 * This case is common to all platforms. Paths that begin with ~ are
+	 * absolute.
 	 */
+
 	if (driveNameLengthPtr != NULL) {
-	    char *end = path + 1;
+	    const char *end = path + 1;
 	    while ((*end != '\0') && (*end != '/')) {
 		end++;
 	    }
@@ -281,56 +394,66 @@ TclpGetNativePathType(pathObjPtr, driveNameLengthPtr, driveNameRef)
 	}
     } else {
 	switch (tclPlatform) {
-	    case TCL_PLATFORM_UNIX: {
-		char *origPath = path;
-	        
-		/*
-		 * Paths that begin with / are absolute.
-		 */
+	case TCL_PLATFORM_UNIX: {
+	    const char *origPath = path;
 
-#ifdef __QNX__
+	    /*
+	     * Paths that begin with / are absolute.
+	     */
+
+	    if (path[0] == '/') {
+		++path;
+#if defined(__CYGWIN__) || defined(__QNX__)
 		/*
-		 * Check for QNX //<node id> prefix
+		 * Check for "//" network path prefix
 		 */
-		if (*path && (pathLen > 3) && (path[0] == '/') 
-		  && (path[1] == '/') && isdigit(UCHAR(path[2]))) {
-		    path += 3;
-		    while (isdigit(UCHAR(*path))) {
+		if ((*path == '/') && path[1] && (path[1] != '/')) {
+		    path += 2;
+		    while (*path && *path != '/') {
 			++path;
 		    }
+#if defined(__CYGWIN__)
+		    /* UNC paths need to be followed by a share name */
+		    if (*path++ && (*path && *path != '/')) {
+			++path;
+			while (*path && *path != '/') {
+			    ++path;
+			}
+		    } else {
+			path = origPath + 1;
+		    }
+#endif
 		}
 #endif
-		if (path[0] == '/') {
-		    if (driveNameLengthPtr != NULL) {
-			/* 
-			 * We need this addition in case the QNX code 
-			 * was used 
-			 */
-			*driveNameLengthPtr = (1 + path - origPath);
-		    }
-		} else {
-		    type = TCL_PATH_RELATIVE;
+		if (driveNameLengthPtr != NULL) {
+		    /*
+		     * We need this addition in case the QNX or Cygwin code was used.
+		     */
+
+		    *driveNameLengthPtr = (path - origPath);
 		}
-		break;
+	    } else {
+		type = TCL_PATH_RELATIVE;
 	    }
-	    
-	    case TCL_PLATFORM_WINDOWS: {
-		Tcl_DString ds;
-		CONST char *rootEnd;
-		
-		Tcl_DStringInit(&ds);
-		rootEnd = ExtractWinRoot(path, &ds, 0, &type);
-		if ((rootEnd != path) && (driveNameLengthPtr != NULL)) {
-		    *driveNameLengthPtr = rootEnd - path;
-		    if (driveNameRef != NULL) {
-			*driveNameRef = Tcl_NewStringObj(Tcl_DStringValue(&ds),
-				Tcl_DStringLength(&ds));
-			Tcl_IncrRefCount(*driveNameRef);
-		    }
+	    break;
+	}
+	case TCL_PLATFORM_WINDOWS: {
+	    Tcl_DString ds;
+	    const char *rootEnd;
+
+	    Tcl_DStringInit(&ds);
+	    rootEnd = ExtractWinRoot(path, &ds, 0, &type);
+	    if ((rootEnd != path) && (driveNameLengthPtr != NULL)) {
+		*driveNameLengthPtr = rootEnd - path;
+		if (driveNameRef != NULL) {
+		    *driveNameRef = Tcl_NewStringObj(Tcl_DStringValue(&ds),
+			    Tcl_DStringLength(&ds));
+		    Tcl_IncrRefCount(*driveNameRef);
 		}
-		Tcl_DStringFree(&ds);
-		break;
 	    }
+	    Tcl_DStringFree(&ds);
+	    break;
+	}
 	}
     }
     return type;
@@ -341,18 +464,17 @@ TclpGetNativePathType(pathObjPtr, driveNameLengthPtr, driveNameRef)
  *
  * TclpNativeSplitPath --
  *
- *      This function takes the given Tcl_Obj, which should be a valid
- *      path, and returns a Tcl List object containing each segment
- *      of that path as an element.
+ *	This function takes the given Tcl_Obj, which should be a valid path,
+ *	and returns a Tcl List object containing each segment of that path as
+ *	an element.
+ *
+ *	Note this function currently calls the older Split(Plat)Path
+ *	functions, which require more memory allocation than is desirable.
  *
- *      Note this function currently calls the older Split(Plat)Path
- *      functions, which require more memory allocation than is
- *      desirable.
- *      
  * Results:
- *      Returns list object with refCount of zero.  If the passed in
- *      lenPtr is non-NULL, we use it to return the number of elements
- *      in the returned list.
+ *	Returns list object with refCount of zero. If the passed in lenPtr is
+ *	non-NULL, we use it to return the number of elements in the returned
+ *	list.
  *
  * Side effects:
  *	None.
@@ -360,26 +482,25 @@ TclpGetNativePathType(pathObjPtr, driveNameLengthPtr, driveNameRef)
  *---------------------------------------------------------------------------
  */
 
-Tcl_Obj* 
-TclpNativeSplitPath(pathPtr, lenPtr)
-    Tcl_Obj *pathPtr;		/* Path to split. */
-    int *lenPtr;		/* int to store number of path elements. */
+Tcl_Obj *
+TclpNativeSplitPath(
+    Tcl_Obj *pathPtr,		/* Path to split. */
+    int *lenPtr)		/* int to store number of path elements. */
 {
-    Tcl_Obj *resultPtr = NULL;  /* Needed only to prevent gcc warnings. */
+    Tcl_Obj *resultPtr = NULL;	/* Needed only to prevent gcc warnings. */
 
     /*
-     * Perform platform specific splitting. 
+     * Perform platform specific splitting.
      */
 
     switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    resultPtr = SplitUnixPath(Tcl_GetString(pathPtr));
-	    break;
+    case TCL_PLATFORM_UNIX:
+	resultPtr = SplitUnixPath(Tcl_GetString(pathPtr));
+	break;
 
-	case TCL_PLATFORM_WINDOWS:
-	    resultPtr = SplitWinPath(Tcl_GetString(pathPtr));
-	    break;
-	    
+    case TCL_PLATFORM_WINDOWS:
+	resultPtr = SplitWinPath(Tcl_GetString(pathPtr));
+	break;
     }
 
     /*
@@ -397,20 +518,19 @@ TclpNativeSplitPath(pathPtr, lenPtr)
  *
  * Tcl_SplitPath --
  *
- *	Split a path into a list of path components.  The first element
- *	of the list will have the same path type as the original path.
+ *	Split a path into a list of path components. The first element of the
+ *	list will have the same path type as the original path.
  *
  * Results:
- *	Returns a standard Tcl result.  The interpreter result contains
- *	a list of path components.
- *	*argvPtr will be filled in with the address of an array
- *	whose elements point to the elements of path, in order.
- *	*argcPtr will get filled in with the number of valid elements
- *	in the array.  A single block of memory is dynamically allocated
- *	to hold both the argv array and a copy of the path elements.
- *	The caller must eventually free this memory by calling ckfree()
- *	on *argvPtr.  Note:  *argvPtr and *argcPtr are only modified
- *	if the procedure returns normally.
+ *	Returns a standard Tcl result. The interpreter result contains a list
+ *	of path components. *argvPtr will be filled in with the address of an
+ *	array whose elements point to the elements of path, in order.
+ *	*argcPtr will get filled in with the number of valid elements in the
+ *	array. A single block of memory is dynamically allocated to hold both
+ *	the argv array and a copy of the path elements. The caller must
+ *	eventually free this memory by calling ckfree() on *argvPtr. Note:
+ *	*argvPtr and *argcPtr are only modified if the procedure returns
+ *	normally.
  *
  * Side effects:
  *	Allocates memory.
@@ -419,17 +539,18 @@ TclpNativeSplitPath(pathPtr, lenPtr)
  */
 
 void
-Tcl_SplitPath(path, argcPtr, argvPtr)
-    CONST char *path;		/* Pointer to string containing a path. */
-    int *argcPtr;		/* Pointer to location to fill in with
-				 * the number of elements in the path. */
-    CONST char ***argvPtr;	/* Pointer to place to store pointer to array
+Tcl_SplitPath(
+    const char *path,		/* Pointer to string containing a path. */
+    int *argcPtr,		/* Pointer to location to fill in with the
+				 * number of elements in the path. */
+    const char ***argvPtr)	/* Pointer to place to store pointer to array
 				 * of pointers to path elements. */
 {
-    Tcl_Obj *resultPtr = NULL;  /* Needed only to prevent gcc warnings. */
+    Tcl_Obj *resultPtr = NULL;	/* Needed only to prevent gcc warnings. */
     Tcl_Obj *tmpPtr, *eltPtr;
     int i, size, len;
-    char *p, *str;
+    char *p;
+    const char *str;
 
     /*
      * Perform the splitting, using objectified, vfs-aware code.
@@ -438,38 +559,41 @@ Tcl_SplitPath(path, argcPtr, argvPtr)
     tmpPtr = Tcl_NewStringObj(path, -1);
     Tcl_IncrRefCount(tmpPtr);
     resultPtr = Tcl_FSSplitPath(tmpPtr, argcPtr);
+    Tcl_IncrRefCount(resultPtr);
     Tcl_DecrRefCount(tmpPtr);
 
-    /* Calculate space required for the result */
-    
+    /*
+     * Calculate space required for the result.
+     */
+
     size = 1;
     for (i = 0; i < *argcPtr; i++) {
 	Tcl_ListObjIndex(NULL, resultPtr, i, &eltPtr);
 	Tcl_GetStringFromObj(eltPtr, &len);
 	size += len + 1;
     }
-    
+
     /*
-     * Allocate a buffer large enough to hold the contents of all of
-     * the list plus the argv pointers and the terminating NULL pointer.
+     * Allocate a buffer large enough to hold the contents of all of the list
+     * plus the argv pointers and the terminating NULL pointer.
      */
 
-    *argvPtr = (CONST char **) ckalloc((unsigned)
+    *argvPtr = (const char **) ckalloc((unsigned)
 	    ((((*argcPtr) + 1) * sizeof(char *)) + size));
 
     /*
-     * Position p after the last argv pointer and copy the contents of
-     * the list in, piece by piece.
+     * Position p after the last argv pointer and copy the contents of the
+     * list in, piece by piece.
      */
 
     p = (char *) &(*argvPtr)[(*argcPtr) + 1];
     for (i = 0; i < *argcPtr; i++) {
 	Tcl_ListObjIndex(NULL, resultPtr, i, &eltPtr);
 	str = Tcl_GetStringFromObj(eltPtr, &len);
-	memcpy((VOID *) p, (VOID *) str, (size_t) len+1);
+	memcpy(p, str, (size_t) len+1);
 	p += len+1;
     }
-    
+
     /*
      * Now set up the argv pointers.
      */
@@ -478,7 +602,7 @@ Tcl_SplitPath(path, argcPtr, argvPtr)
 
     for (i = 0; i < *argcPtr; i++) {
 	(*argvPtr)[i] = p;
-	while ((*p++) != '\0') {}
+	for (; *(p++)!='\0'; );
     }
     (*argvPtr)[i] = NULL;
 
@@ -494,8 +618,8 @@ Tcl_SplitPath(path, argcPtr, argvPtr)
  *
  * SplitUnixPath --
  *
- *	This routine is used by Tcl_(FS)SplitPath to handle splitting
- *	Unix paths.
+ *	This routine is used by Tcl_(FS)SplitPath to handle splitting Unix
+ *	paths.
  *
  * Results:
  *	Returns a newly allocated Tcl list object.
@@ -506,74 +630,85 @@ Tcl_SplitPath(path, argcPtr, argvPtr)
  *----------------------------------------------------------------------
  */
 
-static Tcl_Obj*
-SplitUnixPath(path)
-    CONST char *path;		/* Pointer to string containing a path. */
+static Tcl_Obj *
+SplitUnixPath(
+    const char *path)		/* Pointer to string containing a path. */
 {
     int length;
-    CONST char *p, *elementStart;
+    const char *origPath = path, *elementStart;
     Tcl_Obj *result = Tcl_NewObj();
 
     /*
      * Deal with the root directory as a special case.
      */
 
-#ifdef __QNX__
-    /*
-     * Check for QNX //<node id> prefix
-     */
-    if ((path[0] == '/') && (path[1] == '/')
-	    && isdigit(UCHAR(path[2]))) { /* INTL: digit */
-	path += 3;
-	while (isdigit(UCHAR(*path))) { /* INTL: digit */
-	    ++path;
+    if (*path == '/') {
+	Tcl_Obj *rootElt;
+	++path;
+#if defined(__CYGWIN__) || defined(__QNX__)
+	/*
+	 * Check for "//" network path prefix
+	 */
+	if ((*path == '/') && path[1] && (path[1] != '/')) {
+	    path += 2;
+	    while (*path && *path != '/') {
+		++path;
+	    }
+#if defined(__CYGWIN__)
+	    /* UNC paths need to be followed by a share name */
+	    if (*path++ && (*path && *path != '/')) {
+		++path;
+		while (*path && *path != '/') {
+		    ++path;
+		}
+	    } else {
+		path = origPath + 1;
+	    }
+#endif
 	}
-    }
 #endif
-
-    if (path[0] == '/') {
-	Tcl_ListObjAppendElement(NULL, result, Tcl_NewStringObj("/",1));
-	p = path+1;
-    } else {
-	p = path;
+	rootElt = Tcl_NewStringObj(origPath, path - origPath);
+	Tcl_ListObjAppendElement(NULL, result, rootElt);
+	while (*path == '/') {
+	    ++path;
+	}
     }
 
     /*
-     * Split on slashes.  Embedded elements that start with tilde will be
+     * Split on slashes. Embedded elements that start with tilde will be
      * prefixed with "./" so they are not affected by tilde substitution.
      */
 
     for (;;) {
-	elementStart = p;
-	while ((*p != '\0') && (*p != '/')) {
-	    p++;
+	elementStart = path;
+	while ((*path != '\0') && (*path != '/')) {
+	    path++;
 	}
-	length = p - elementStart;
+	length = path - elementStart;
 	if (length > 0) {
 	    Tcl_Obj *nextElt;
-	    if ((elementStart[0] == '~') && (elementStart != path)) {
-		nextElt = Tcl_NewStringObj("./",2);
+	    if ((elementStart[0] == '~') && (elementStart != origPath)) {
+		TclNewLiteralStringObj(nextElt, "./");
 		Tcl_AppendToObj(nextElt, elementStart, length);
 	    } else {
 		nextElt = Tcl_NewStringObj(elementStart, length);
 	    }
 	    Tcl_ListObjAppendElement(NULL, result, nextElt);
 	}
-	if (*p++ == '\0') {
+	if (*path++ == '\0') {
 	    break;
 	}
     }
     return result;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * SplitWinPath --
  *
- *	This routine is used by Tcl_(FS)SplitPath to handle splitting
- *	Windows paths.
+ *	This routine is used by Tcl_(FS)SplitPath to handle splitting Windows
+ *	paths.
  *
  * Results:
  *	Returns a newly allocated Tcl list object.
@@ -584,17 +719,17 @@ SplitUnixPath(path)
  *----------------------------------------------------------------------
  */
 
-static Tcl_Obj*
-SplitWinPath(path)
-    CONST char *path;		/* Pointer to string containing a path. */
+static Tcl_Obj *
+SplitWinPath(
+    const char *path)		/* Pointer to string containing a path. */
 {
     int length;
-    CONST char *p, *elementStart;
+    const char *p, *elementStart;
     Tcl_PathType type = TCL_PATH_ABSOLUTE;
     Tcl_DString buf;
     Tcl_Obj *result = Tcl_NewObj();
     Tcl_DStringInit(&buf);
-    
+
     p = ExtractWinRoot(path, &buf, 0, &type);
 
     /*
@@ -602,16 +737,15 @@ SplitWinPath(path)
      */
 
     if (p != path) {
-	Tcl_ListObjAppendElement(NULL, result, 
-				 Tcl_NewStringObj(Tcl_DStringValue(&buf), 
-						  Tcl_DStringLength(&buf)));
+	Tcl_ListObjAppendElement(NULL, result, Tcl_NewStringObj(
+		Tcl_DStringValue(&buf), Tcl_DStringLength(&buf)));
     }
     Tcl_DStringFree(&buf);
-    
+
     /*
-     * Split on slashes.  Embedded elements that start with tilde 
-     * or a drive letter will be prefixed with "./" so they are not 
-     * affected by tilde substitution.
+     * Split on slashes. Embedded elements that start with tilde or a drive
+     * letter will be prefixed with "./" so they are not affected by tilde
+     * substitution.
      */
 
     do {
@@ -622,11 +756,10 @@ SplitWinPath(path)
 	length = p - elementStart;
 	if (length > 0) {
 	    Tcl_Obj *nextElt;
-	    if ((elementStart != path)
-		&& ((elementStart[0] == '~')
+	    if ((elementStart != path) && ((elementStart[0] == '~')
 		    || (isalpha(UCHAR(elementStart[0]))
 			&& elementStart[1] == ':'))) {
-		nextElt = Tcl_NewStringObj("./",2);
+		TclNewLiteralStringObj(nextElt, "./");
 		Tcl_AppendToObj(nextElt, elementStart, length);
 	    } else {
 		nextElt = Tcl_NewStringObj(elementStart, length);
@@ -643,12 +776,17 @@ SplitWinPath(path)
  *
  * Tcl_FSJoinToPath --
  *
- *      This function takes the given object, which should usually be a
- *      valid path or NULL, and joins onto it the array of paths
- *      segments given.
+ *	This function takes the given object, which should usually be a valid
+ *	path or NULL, and joins onto it the array of paths segments given.
+ *
+ *	The objects in the array given will temporarily have their refCount
+ *	increased by one, and then decreased by one when this function exits
+ *	(which means if they had zero refCount when we were called, they will
+ *	be freed).
  *
  * Results:
- *      Returns object with refCount of zero
+ *	Returns object owned by the caller (which should increment its
+ *	refCount) - typically an object with refCount of zero.
  *
  * Side effects:
  *	None.
@@ -656,26 +794,37 @@ SplitWinPath(path)
  *---------------------------------------------------------------------------
  */
 
-Tcl_Obj* 
-Tcl_FSJoinToPath(basePtr, objc, objv)
-    Tcl_Obj *basePtr;
-    int objc;
-    Tcl_Obj *CONST objv[];
+Tcl_Obj *
+Tcl_FSJoinToPath(
+    Tcl_Obj *pathPtr,		/* Valid path or NULL. */
+    int objc,			/* Number of array elements to join */
+    Tcl_Obj *const objv[])	/* Path elements to join. */
 {
     int i;
     Tcl_Obj *lobj, *ret;
 
-    if (basePtr == NULL) {
+    if (pathPtr == NULL) {
 	lobj = Tcl_NewListObj(0, NULL);
     } else {
-	lobj = Tcl_NewListObj(1, &basePtr);
+	lobj = Tcl_NewListObj(1, &pathPtr);
     }
-    
+
     for (i = 0; i<objc;i++) {
 	Tcl_ListObjAppendElement(NULL, lobj, objv[i]);
     }
     ret = Tcl_FSJoinPath(lobj, -1);
+
+    /*
+     * It is possible that 'ret' is just a member of the list and is therefore
+     * going to be freed here. Therefore we must adjust the refCount manually.
+     * (It would be better if we changed the documentation of this function
+     * and Tcl_FSJoinPath so that the returned object already has a refCount
+     * for the caller, hence avoiding these subtleties (and code ugliness)).
+     */
+
+    Tcl_IncrRefCount(ret);
     Tcl_DecrRefCount(lobj);
+    ret->refCount--;
     return ret;
 }
 
@@ -684,10 +833,10 @@ Tcl_FSJoinToPath(basePtr, objc, objv)
  *
  * TclpNativeJoinPath --
  *
- *      'prefix' is absolute, 'joining' is relative to prefix.
+ *	'prefix' is absolute, 'joining' is relative to prefix.
  *
  * Results:
- *      modifies prefix
+ *	modifies prefix
  *
  * Side effects:
  *	None.
@@ -696,28 +845,28 @@ Tcl_FSJoinToPath(basePtr, objc, objv)
  */
 
 void
-TclpNativeJoinPath(prefix, joining)
-    Tcl_Obj *prefix;
-    char* joining;
+TclpNativeJoinPath(
+    Tcl_Obj *prefix,
+    const char *joining)
 {
     int length, needsSep;
-    char *dest, *p, *start;
-    
+    char *dest;
+    const char *p;
+    const char *start;
+
     start = Tcl_GetStringFromObj(prefix, &length);
 
     /*
-     * Remove the ./ from tilde prefixed elements, and drive-letter
-     * prefixed elements on Windows, unless it is the first component.
+     * Remove the ./ from tilde prefixed elements, and drive-letter prefixed
+     * elements on Windows, unless it is the first component.
      */
-    
+
     p = joining;
-    
+
     if (length != 0) {
-	if ((p[0] == '.') && (p[1] == '/')
-	    && ((p[2] == '~')
-		|| ((tclPlatform == TCL_PLATFORM_WINDOWS)
-		    && isalpha(UCHAR(p[2]))
-		    && (p[3] == ':')))) {
+	if ((p[0] == '.') && (p[1] == '/') && ((p[2] == '~')
+		|| (tclPlatform==TCL_PLATFORM_WINDOWS && isalpha(UCHAR(p[2]))
+		&& (p[3] == ':')))) {
 	    p += 2;
 	}
     }
@@ -726,80 +875,75 @@ TclpNativeJoinPath(prefix, joining)
     }
 
     switch (tclPlatform) {
-        case TCL_PLATFORM_UNIX:
-	    /*
-	     * Append a separator if needed.
-	     */
+    case TCL_PLATFORM_UNIX:
+	/*
+	 * Append a separator if needed.
+	 */
 
-	    if (length > 0 && (start[length-1] != '/')) {
-		Tcl_AppendToObj(prefix, "/", 1);
-		Tcl_GetStringFromObj(prefix, &length);
-	    }
-	    needsSep = 0;
-	    
-	    /*
-	     * Append the element, eliminating duplicate and trailing
-	     * slashes.
-	     */
+	if (length > 0 && (start[length-1] != '/')) {
+	    Tcl_AppendToObj(prefix, "/", 1);
+	    Tcl_GetStringFromObj(prefix, &length);
+	}
+	needsSep = 0;
 
-	    Tcl_SetObjLength(prefix, length + (int) strlen(p));
-	    
-	    dest = Tcl_GetString(prefix) + length;
-	    for (; *p != '\0'; p++) {
-		if (*p == '/') {
-		    while (p[1] == '/') {
-			p++;
-		    }
-		    if (p[1] != '\0') {
-			if (needsSep) {
-			    *dest++ = '/';
-			}
-		    }
-		} else {
-		    *dest++ = *p;
-		    needsSep = 1;
+	/*
+	 * Append the element, eliminating duplicate and trailing slashes.
+	 */
+
+	Tcl_SetObjLength(prefix, length + (int) strlen(p));
+
+	dest = Tcl_GetString(prefix) + length;
+	for (; *p != '\0'; p++) {
+	    if (*p == '/') {
+		while (p[1] == '/') {
+		    p++;
+		}
+		if (p[1] != '\0' && needsSep) {
+		    *dest++ = '/';
 		}
+	    } else {
+		*dest++ = *p;
+		needsSep = 1;
 	    }
-	    length = dest - Tcl_GetString(prefix);
-	    Tcl_SetObjLength(prefix, length);
-	    break;
+	}
+	length = dest - Tcl_GetString(prefix);
+	Tcl_SetObjLength(prefix, length);
+	break;
 
-	case TCL_PLATFORM_WINDOWS:
-	    /*
-	     * Check to see if we need to append a separator.
-	     */
+    case TCL_PLATFORM_WINDOWS:
+	/*
+	 * Check to see if we need to append a separator.
+	 */
 
-	    if ((length > 0) && 
+	if ((length > 0) &&
 		(start[length-1] != '/') && (start[length-1] != ':')) {
-		Tcl_AppendToObj(prefix, "/", 1);
-		Tcl_GetStringFromObj(prefix, &length);
-	    }
-	    needsSep = 0;
-	    
-	    /*
-	     * Append the element, eliminating duplicate and
-	     * trailing slashes.
-	     */
+	    Tcl_AppendToObj(prefix, "/", 1);
+	    Tcl_GetStringFromObj(prefix, &length);
+	}
+	needsSep = 0;
 
-	    Tcl_SetObjLength(prefix, length + (int) strlen(p));
-	    dest = Tcl_GetString(prefix) + length;
-	    for (; *p != '\0'; p++) {
-		if ((*p == '/') || (*p == '\\')) {
-		    while ((p[1] == '/') || (p[1] == '\\')) {
-			p++;
-		    }
-		    if ((p[1] != '\0') && needsSep) {
-			*dest++ = '/';
-		    }
-		} else {
-		    *dest++ = *p;
-		    needsSep = 1;
+	/*
+	 * Append the element, eliminating duplicate and trailing slashes.
+	 */
+
+	Tcl_SetObjLength(prefix, length + (int) strlen(p));
+	dest = Tcl_GetString(prefix) + length;
+	for (; *p != '\0'; p++) {
+	    if ((*p == '/') || (*p == '\\')) {
+		while ((p[1] == '/') || (p[1] == '\\')) {
+		    p++;
+		}
+		if ((p[1] != '\0') && needsSep) {
+		    *dest++ = '/';
 		}
+	    } else {
+		*dest++ = *p;
+		needsSep = 1;
 	    }
-	    length = dest - Tcl_GetString(prefix);
-	    Tcl_SetObjLength(prefix, length);
-	    break;
-
+	}
+	length = dest - Tcl_GetString(prefix);
+	Tcl_SetObjLength(prefix, length);
+	break;
     }
     return;
 }
@@ -809,14 +953,13 @@ TclpNativeJoinPath(prefix, joining)
  *
  * Tcl_JoinPath --
  *
- *	Combine a list of paths in a platform specific manner.  The
- *	function 'Tcl_FSJoinPath' should be used in preference where
- *	possible.
+ *	Combine a list of paths in a platform specific manner. The function
+ *	'Tcl_FSJoinPath' should be used in preference where possible.
  *
  * Results:
- *	Appends the joined path to the end of the specified 
- *	Tcl_DString returning a pointer to the resulting string.  Note
- *	that the Tcl_DString must already be initialized.
+ *	Appends the joined path to the end of the specified Tcl_DString
+ *	returning a pointer to the resulting string. Note that the
+ *	Tcl_DString must already be initialized.
  *
  * Side effects:
  *	Modifies the Tcl_DString.
@@ -825,34 +968,46 @@ TclpNativeJoinPath(prefix, joining)
  */
 
 char *
-Tcl_JoinPath(argc, argv, resultPtr)
-    int argc;
-    CONST char * CONST *argv;
-    Tcl_DString *resultPtr;	/* Pointer to previously initialized DString */
+Tcl_JoinPath(
+    int argc,
+    const char *const *argv,
+    Tcl_DString *resultPtr)	/* Pointer to previously initialized DString */
 {
     int i, len;
     Tcl_Obj *listObj = Tcl_NewObj();
     Tcl_Obj *resultObj;
-    char *resultStr;
+    const char *resultStr;
+
+    /*
+     * Build the list of paths.
+     */
 
-    /* Build the list of paths */
     for (i = 0; i < argc; i++) {
-        Tcl_ListObjAppendElement(NULL, listObj,
+	Tcl_ListObjAppendElement(NULL, listObj,
 		Tcl_NewStringObj(argv[i], -1));
     }
 
-    /* Ask the objectified code to join the paths */
+    /*
+     * Ask the objectified code to join the paths.
+     */
+
     Tcl_IncrRefCount(listObj);
     resultObj = Tcl_FSJoinPath(listObj, argc);
     Tcl_IncrRefCount(resultObj);
     Tcl_DecrRefCount(listObj);
 
-    /* Store the result */
+    /*
+     * Store the result.
+     */
+
     resultStr = Tcl_GetStringFromObj(resultObj, &len);
     Tcl_DStringAppend(resultPtr, resultStr, len);
     Tcl_DecrRefCount(resultObj);
 
-    /* Return a pointer to the result */
+    /*
+     * Return a pointer to the result.
+     */
+
     return Tcl_DStringValue(resultPtr);
 }
 
@@ -862,19 +1017,19 @@ Tcl_JoinPath(argc, argv, resultPtr)
  * Tcl_TranslateFileName --
  *
  *	Converts a file name into a form usable by the native system
- *	interfaces.  If the name starts with a tilde, it will produce a
- *	name where the tilde and following characters have been replaced
- *	by the home directory location for the named user.
+ *	interfaces. If the name starts with a tilde, it will produce a name
+ *	where the tilde and following characters have been replaced by the
+ *	home directory location for the named user.
  *
  * Results:
- *	The return value is a pointer to a string containing the name
- *	after tilde substitution.  If there was no tilde substitution,
- *	the return value is a pointer to a copy of the original string.
- *	If there was an error in processing the name, then an error
- *	message is left in the interp's result (if interp was not NULL)
- *	and the return value is NULL.  Space for the return value is
- *	allocated in bufferPtr; the caller must call Tcl_DStringFree()
- *	to free the space if the return value was not NULL.
+ *	The return value is a pointer to a string containing the name after
+ *	tilde substitution. If there was no tilde substitution, the return
+ *	value is a pointer to a copy of the original string. If there was an
+ *	error in processing the name, then an error message is left in the
+ *	interp's result (if interp was not NULL) and the return value is NULL.
+ *	Space for the return value is allocated in bufferPtr; the caller must
+ *	call Tcl_DStringFree() to free the space if the return value was not
+ *	NULL.
  *
  * Side effects:
  *	None.
@@ -883,15 +1038,15 @@ Tcl_JoinPath(argc, argv, resultPtr)
  */
 
 char *
-Tcl_TranslateFileName(interp, name, bufferPtr)
-    Tcl_Interp *interp;		/* Interpreter in which to store error
-				 * message (if necessary). */
-    CONST char *name;		/* File name, which may begin with "~" (to
+Tcl_TranslateFileName(
+    Tcl_Interp *interp,		/* Interpreter in which to store error message
+				 * (if necessary). */
+    const char *name,		/* File name, which may begin with "~" (to
 				 * indicate current user's home directory) or
 				 * "~<user>" (to indicate any user's home
 				 * directory). */
-    Tcl_DString *bufferPtr;	/* Uninitialized or free DString filled
-				 * with name after tilde substitution. */
+    Tcl_DString *bufferPtr)	/* Uninitialized or free DString filled with
+				 * name after tilde substitution. */
 {
     Tcl_Obj *path = Tcl_NewStringObj(name, -1);
     Tcl_Obj *transPtr;
@@ -902,15 +1057,15 @@ Tcl_TranslateFileName(interp, name, bufferPtr)
 	Tcl_DecrRefCount(path);
 	return NULL;
     }
-    
+
     Tcl_DStringInit(bufferPtr);
     Tcl_DStringAppend(bufferPtr, Tcl_GetString(transPtr), -1);
     Tcl_DecrRefCount(path);
     Tcl_DecrRefCount(transPtr);
-    
+
     /*
-     * Convert forward slashes to backslashes in Windows paths because
-     * some system interfaces don't accept forward slashes.
+     * Convert forward slashes to backslashes in Windows paths because some
+     * system interfaces don't accept forward slashes.
      */
 
     if (tclPlatform == TCL_PLATFORM_WINDOWS) {
@@ -921,6 +1076,7 @@ Tcl_TranslateFileName(interp, name, bufferPtr)
 	    }
 	}
     }
+
     return Tcl_DStringValue(bufferPtr);
 }
 
@@ -929,12 +1085,12 @@ Tcl_TranslateFileName(interp, name, bufferPtr)
  *
  * TclGetExtension --
  *
- *	This function returns a pointer to the beginning of the
- *	extension part of a file name.
+ *	This function returns a pointer to the beginning of the extension part
+ *	of a file name.
  *
  * Results:
  *	Returns a pointer into name which indicates where the extension
- *	starts.  If there is no extension, returns NULL.
+ *	starts. If there is no extension, returns NULL.
  *
  * Side effects:
  *	None.
@@ -942,11 +1098,11 @@ Tcl_TranslateFileName(interp, name, bufferPtr)
  *----------------------------------------------------------------------
  */
 
-char *
-TclGetExtension(name)
-    char *name;			/* File name to parse. */
+const char *
+TclGetExtension(
+    const char *name)		/* File name to parse. */
 {
-    char *p, *lastSep;
+    const char *p, *lastSep;
 
     /*
      * First find the last directory separator.
@@ -954,18 +1110,18 @@ TclGetExtension(name)
 
     lastSep = NULL;		/* Needed only to prevent gcc warnings. */
     switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    lastSep = strrchr(name, '/');
-	    break;
-
-	case TCL_PLATFORM_WINDOWS:
-	    lastSep = NULL;
-	    for (p = name; *p != '\0'; p++) {
-		if (strchr("/\\:", *p) != NULL) {
-		    lastSep = p;
-		}
+    case TCL_PLATFORM_UNIX:
+	lastSep = strrchr(name, '/');
+	break;
+
+    case TCL_PLATFORM_WINDOWS:
+	lastSep = NULL;
+	for (p = name; *p != '\0'; p++) {
+	    if (strchr("/\\:", *p) != NULL) {
+		lastSep = p;
 	    }
-	    break;
+	}
+	break;
     }
     p = strrchr(name, '.');
     if ((p != NULL) && (lastSep != NULL) && (lastSep > p)) {
@@ -974,7 +1130,7 @@ TclGetExtension(name)
 
     /*
      * In earlier versions, we used to back up to the first period in a series
-     * so that "foo..o" would be split into "foo" and "..o".  This is a
+     * so that "foo..o" would be split into "foo" and "..o". This is a
      * confusing and usually incorrect behavior, so now we split at the last
      * period in the name.
      */
@@ -992,11 +1148,10 @@ TclGetExtension(name)
  *
  * Results:
  *	The result is a pointer to a static string containing the home
- *	directory in native format.  If there was an error in processing
- *	the substitution, then an error message is left in the interp's
- *	result and the return value is NULL.  On success, the results
- *	are appended to resultPtr, and the contents of resultPtr are
- *	returned.
+ *	directory in native format. If there was an error in processing the
+ *	substitution, then an error message is left in the interp's result and
+ *	the return value is NULL. On success, the results are appended to
+ *	resultPtr, and the contents of resultPtr are returned.
  *
  * Side effects:
  *	Information may be left in resultPtr.
@@ -1004,40 +1159,38 @@ TclGetExtension(name)
  *----------------------------------------------------------------------
  */
 
-static CONST char *
-DoTildeSubst(interp, user, resultPtr)
-    Tcl_Interp *interp;		/* Interpreter in which to store error
-				 * message (if necessary). */
-    CONST char *user;		/* Name of user whose home directory should be
+static const char *
+DoTildeSubst(
+    Tcl_Interp *interp,		/* Interpreter in which to store error message
+				 * (if necessary). */
+    const char *user,		/* Name of user whose home directory should be
 				 * substituted, or "" for current user. */
-    Tcl_DString *resultPtr;	/* Initialized DString filled with name
-				 * after tilde substitution. */
+    Tcl_DString *resultPtr)	/* Initialized DString filled with name after
+				 * tilde substitution. */
 {
-    CONST char *dir;
+    const char *dir;
 
     if (*user == '\0') {
 	Tcl_DString dirString;
-	
+
 	dir = TclGetEnv("HOME", &dirString);
 	if (dir == NULL) {
 	    if (interp) {
 		Tcl_ResetResult(interp);
-		Tcl_AppendResult(interp, "couldn't find HOME environment ",
-			"variable to expand path", (char *) NULL);
+		Tcl_AppendResult(interp, "couldn't find HOME environment "
+			"variable to expand path", NULL);
 	    }
 	    return NULL;
 	}
 	Tcl_JoinPath(1, &dir, resultPtr);
 	Tcl_DStringFree(&dirString);
-    } else {
-	if (TclpGetUserHome(user, resultPtr) == NULL) {	
-	    if (interp) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendResult(interp, "user \"", user, "\" doesn't exist",
-			(char *) NULL);
-	    }
-	    return NULL;
+    } else if (TclpGetUserHome(user, resultPtr) == NULL) {
+	if (interp) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "user \"", user, "\" doesn't exist",
+		    NULL);
 	}
+	return NULL;
     }
     return Tcl_DStringValue(resultPtr);
 }
@@ -1047,8 +1200,8 @@ DoTildeSubst(interp, user, resultPtr)
  *
  * Tcl_GlobObjCmd --
  *
- *	This procedure is invoked to process the "glob" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "glob" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1061,23 +1214,24 @@ DoTildeSubst(interp, user, resultPtr)
 
 	/* ARGSUSED */
 int
-Tcl_GlobObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_GlobObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int index, i, globFlags, length, join, dir, result;
-    char *string, *separators;
+    char *string;
+    const char *separators;
     Tcl_Obj *typePtr, *resultPtr, *look;
     Tcl_Obj *pathOrDir = NULL;
     Tcl_DString prefix;
-    static CONST char *options[] = {
-	"-directory", "-join", "-nocomplain", "-path", "-tails", 
+    static const char *options[] = {
+	"-directory", "-join", "-nocomplain", "-path", "-tails",
 	"-types", "--", NULL
     };
     enum options {
-	GLOB_DIR, GLOB_JOIN, GLOB_NOCOMPLAIN, GLOB_PATH, GLOB_TAILS, 
+	GLOB_DIR, GLOB_JOIN, GLOB_NOCOMPLAIN, GLOB_PATH, GLOB_TAILS,
 	GLOB_TYPE, GLOB_LAST
     };
     enum pathDirOptions {PATH_NONE = -1 , PATH_GENERAL = 0, PATH_DIR = 1};
@@ -1088,156 +1242,180 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
     dir = PATH_NONE;
     typePtr = NULL;
     for (i = 1; i < objc; i++) {
-	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, &index)
-		!= TCL_OK) {
+	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0,
+		&index) != TCL_OK) {
 	    string = Tcl_GetStringFromObj(objv[i], &length);
 	    if (string[0] == '-') {
 		/*
-		 * It looks like the command contains an option so signal
-		 * an error
+		 * It looks like the command contains an option so signal an
+		 * error.
 		 */
+
 		return TCL_ERROR;
 	    } else {
 		/*
-		 * This clearly isn't an option; assume it's the first
-		 * glob pattern.  We must clear the error
+		 * This clearly isn't an option; assume it's the first glob
+		 * pattern. We must clear the error.
 		 */
+
 		Tcl_ResetResult(interp);
 		break;
 	    }
 	}
+
 	switch (index) {
-	    case GLOB_NOCOMPLAIN:			/* -nocomplain */
-	        globFlags |= TCL_GLOBMODE_NO_COMPLAIN;
-		break;
-	    case GLOB_DIR:				/* -dir */
-		if (i == (objc-1)) {
-		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
-			    "missing argument to \"-directory\"", -1));
-		    return TCL_ERROR;
-		}
-		if (dir != PATH_NONE) {
-		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
-			    "\"-directory\" cannot be used with \"-path\"",
-			    -1));
-		    return TCL_ERROR;
-		}
-		dir = PATH_DIR;
-		globFlags |= TCL_GLOBMODE_DIR;
-		pathOrDir = objv[i+1];
-		i++;
-		break;
-	    case GLOB_JOIN:				/* -join */
-		join = 1;
-		break;
-	    case GLOB_TAILS:				/* -tails */
-	        globFlags |= TCL_GLOBMODE_TAILS;
-		break;
-	    case GLOB_PATH:				/* -path */
-	        if (i == (objc-1)) {
-		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
-			    "missing argument to \"-path\"", -1));
-		    return TCL_ERROR;
-		}
-		if (dir != PATH_NONE) {
-		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
-			    "\"-path\" cannot be used with \"-directory\"",
-			    -1));
-		    return TCL_ERROR;
-		}
-		dir = PATH_GENERAL;
-		pathOrDir = objv[i+1];
-		i++;
-		break;
-	    case GLOB_TYPE:				/* -types */
-	        if (i == (objc-1)) {
-		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
-			    "missing argument to \"-types\"", -1));
-		    return TCL_ERROR;
-		}
-		typePtr = objv[i+1];
-		if (Tcl_ListObjLength(interp, typePtr, &length) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		i++;
-		break;
-	    case GLOB_LAST:				/* -- */
-	        i++;
-		goto endOfForLoop;
+	case GLOB_NOCOMPLAIN:			/* -nocomplain */
+	    globFlags |= TCL_GLOBMODE_NO_COMPLAIN;
+	    break;
+	case GLOB_DIR:				/* -dir */
+	    if (i == (objc-1)) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"missing argument to \"-directory\"", -1));
+		return TCL_ERROR;
+	    }
+	    if (dir != PATH_NONE) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"\"-directory\" cannot be used with \"-path\"", -1));
+		return TCL_ERROR;
+	    }
+	    dir = PATH_DIR;
+	    globFlags |= TCL_GLOBMODE_DIR;
+	    pathOrDir = objv[i+1];
+	    i++;
+	    break;
+	case GLOB_JOIN:				/* -join */
+	    join = 1;
+	    break;
+	case GLOB_TAILS:				/* -tails */
+	    globFlags |= TCL_GLOBMODE_TAILS;
+	    break;
+	case GLOB_PATH:				/* -path */
+	    if (i == (objc-1)) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"missing argument to \"-path\"", -1));
+		return TCL_ERROR;
+	    }
+	    if (dir != PATH_NONE) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"\"-path\" cannot be used with \"-directory\"", -1));
+		return TCL_ERROR;
+	    }
+	    dir = PATH_GENERAL;
+	    pathOrDir = objv[i+1];
+	    i++;
+	    break;
+	case GLOB_TYPE:				/* -types */
+	    if (i == (objc-1)) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"missing argument to \"-types\"", -1));
+		return TCL_ERROR;
+	    }
+	    typePtr = objv[i+1];
+	    if (Tcl_ListObjLength(interp, typePtr, &length) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    i++;
+	    break;
+	case GLOB_LAST:				/* -- */
+	    i++;
+	    goto endOfForLoop;
 	}
     }
-    endOfForLoop:
+
+  endOfForLoop:
     if (objc - i < 1) {
-        Tcl_WrongNumArgs(interp, 1, objv, "?switches? name ?name ...?");
+	Tcl_WrongNumArgs(interp, 1, objv, "?switches? name ?name ...?");
 	return TCL_ERROR;
     }
     if ((globFlags & TCL_GLOBMODE_TAILS) && (pathOrDir == NULL)) {
-	Tcl_SetObjResult(interp, Tcl_NewStringObj(
-	  "\"-tails\" must be used with either \"-directory\" or \"-path\"",
-	  -1));
+	Tcl_AppendResult(interp,
+		"\"-tails\" must be used with either "
+		"\"-directory\" or \"-path\"", NULL);
 	return TCL_ERROR;
     }
-    
+
     separators = NULL;		/* lint. */
     switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    separators = "/";
-	    break;
-	case TCL_PLATFORM_WINDOWS:
-	    separators = "/\\:";
-	    break;
+    case TCL_PLATFORM_UNIX:
+	separators = "/";
+	break;
+    case TCL_PLATFORM_WINDOWS:
+	separators = "/\\:";
+	break;
     }
+
     if (dir == PATH_GENERAL) {
 	int pathlength;
-	char *last;
-	char *first = Tcl_GetStringFromObj(pathOrDir,&pathlength);
+	const char *last;
+	const char *first = Tcl_GetStringFromObj(pathOrDir,&pathlength);
 
 	/*
 	 * Find the last path separator in the path
 	 */
+
 	last = first + pathlength;
 	for (; last != first; last--) {
 	    if (strchr(separators, *(last-1)) != NULL) {
 		break;
 	    }
 	}
+
 	if (last == first + pathlength) {
-	    /* It's really a directory */
+	    /*
+	     * It's really a directory.
+	     */
+
 	    dir = PATH_DIR;
+
 	} else {
 	    Tcl_DString pref;
 	    char *search, *find;
 	    Tcl_DStringInit(&pref);
 	    if (last == first) {
-		/* The whole thing is a prefix */
+		/*
+		 * The whole thing is a prefix. This means we must remove any
+		 * 'tails' flag too, since it is irrelevant now (the same
+		 * effect will happen without it), but in particular its use
+		 * in TclGlob requires a non-NULL pathOrDir.
+		 */
+
 		Tcl_DStringAppend(&pref, first, -1);
+		globFlags &= ~TCL_GLOBMODE_TAILS;
 		pathOrDir = NULL;
 	    } else {
-		/* Have to split off the end */
+		/*
+		 * Have to split off the end.
+		 */
+
 		Tcl_DStringAppend(&pref, last, first+pathlength-last);
 		pathOrDir = Tcl_NewStringObj(first, last-first-1);
-		/* 
-		 * We must ensure that we haven't cut off too much,
-		 * and turned a valid path like '/' or 'C:/' into
-		 * an incorrect path like '' or 'C:'.  The way we
-		 * do this is to add a separator if there are none
-		 * presently in the prefix.
+
+		/*
+		 * We must ensure that we haven't cut off too much, and turned
+		 * a valid path like '/' or 'C:/' into an incorrect path like
+		 * '' or 'C:'. The way we do this is to add a separator if
+		 * there are none presently in the prefix.
 		 */
+
 		if (strpbrk(Tcl_GetString(pathOrDir), "\\/") == NULL) {
-		    Tcl_AppendToObj(pathOrDir, last-1, 1); 
+		    Tcl_AppendToObj(pathOrDir, last-1, 1);
 		}
 	    }
-	    /* Need to quote 'prefix' */
+
+	    /*
+	     * Need to quote 'prefix'.
+	     */
+
 	    Tcl_DStringInit(&prefix);
 	    search = Tcl_DStringValue(&pref);
 	    while ((find = (strpbrk(search, "\\[]*?{}"))) != NULL) {
-	        Tcl_DStringAppend(&prefix, search, find-search);
-	        Tcl_DStringAppend(&prefix, "\\", 1);
-	        Tcl_DStringAppend(&prefix, find, 1);
-	        search = find+1;
-	        if (*search == '\0') {
-	            break;
-	        }
+		Tcl_DStringAppend(&prefix, search, find-search);
+		Tcl_DStringAppend(&prefix, "\\", 1);
+		Tcl_DStringAppend(&prefix, find, 1);
+		search = find+1;
+		if (*search == '\0') {
+		    break;
+		}
 	    }
 	    if (*search != '\0') {
 		Tcl_DStringAppend(&prefix, search, -1);
@@ -1245,29 +1423,33 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
 	    Tcl_DStringFree(&pref);
 	}
     }
-    
+
     if (pathOrDir != NULL) {
 	Tcl_IncrRefCount(pathOrDir);
     }
-    
+
     if (typePtr != NULL) {
-	/* 
-	 * The rest of the possible type arguments (except 'd') are
-	 * platform specific.  We don't complain when they are used
-	 * on an incompatible platform.
+	/*
+	 * The rest of the possible type arguments (except 'd') are platform
+	 * specific. We don't complain when they are used on an incompatible
+	 * platform.
 	 */
+
 	Tcl_ListObjLength(interp, typePtr, &length);
 	if (length <= 0) {
 	    goto skipTypes;
 	}
-	globTypes = (Tcl_GlobTypeData*) ckalloc(sizeof(Tcl_GlobTypeData));
+	globTypes = (Tcl_GlobTypeData*)
+		TclStackAlloc(interp,sizeof(Tcl_GlobTypeData));
 	globTypes->type = 0;
 	globTypes->perm = 0;
 	globTypes->macType = NULL;
 	globTypes->macCreator = NULL;
-	while(--length >= 0) {
+
+	while (--length >= 0) {
 	    int len;
-	    char *str;
+	    const char *str;
+
 	    Tcl_ListObjIndex(interp, typePtr, length, &look);
 	    str = Tcl_GetStringFromObj(look, &len);
 	    if (strcmp("readonly", str) == 0) {
@@ -1276,50 +1458,56 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
 		globTypes->perm |= TCL_GLOB_PERM_HIDDEN;
 	    } else if (len == 1) {
 		switch (str[0]) {
-		  case 'r':
+		case 'r':
 		    globTypes->perm |= TCL_GLOB_PERM_R;
 		    break;
-		  case 'w':
+		case 'w':
 		    globTypes->perm |= TCL_GLOB_PERM_W;
 		    break;
-		  case 'x':
+		case 'x':
 		    globTypes->perm |= TCL_GLOB_PERM_X;
 		    break;
-		  case 'b':
+		case 'b':
 		    globTypes->type |= TCL_GLOB_TYPE_BLOCK;
 		    break;
-		  case 'c':
+		case 'c':
 		    globTypes->type |= TCL_GLOB_TYPE_CHAR;
 		    break;
-		  case 'd':
+		case 'd':
 		    globTypes->type |= TCL_GLOB_TYPE_DIR;
 		    break;
-		  case 'p':
+		case 'p':
 		    globTypes->type |= TCL_GLOB_TYPE_PIPE;
 		    break;
-		  case 'f':
+		case 'f':
 		    globTypes->type |= TCL_GLOB_TYPE_FILE;
 		    break;
-	          case 'l':
+		case 'l':
 		    globTypes->type |= TCL_GLOB_TYPE_LINK;
 		    break;
-		  case 's':
+		case 's':
 		    globTypes->type |= TCL_GLOB_TYPE_SOCK;
 		    break;
-		  default:
+		default:
 		    goto badTypesArg;
 		}
+
 	    } else if (len == 4) {
-		/* This is assumed to be a MacOS file type */
+		/*
+		 * This is assumed to be a MacOS file type.
+		 */
+
 		if (globTypes->macType != NULL) {
 		    goto badMacTypesArg;
 		}
 		globTypes->macType = look;
 		Tcl_IncrRefCount(look);
+
 	    } else {
-		Tcl_Obj* item;
-		if ((Tcl_ListObjLength(NULL, look, &len) == TCL_OK) &&
-			(len == 3)) {
+		Tcl_Obj *item;
+
+		if ((Tcl_ListObjLength(NULL, look, &len) == TCL_OK)
+			&& (len == 3)) {
 		    Tcl_ListObjIndex(interp, look, 0, &item);
 		    if (!strcmp("macintosh", Tcl_GetString(item))) {
 			Tcl_ListObjIndex(interp, look, 1, &item);
@@ -1342,22 +1530,25 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
 			}
 		    }
 		}
+
 		/*
-		 * Error cases.  We reset
-		 * the 'join' flag to zero, since we haven't yet
-		 * made use of it.
+		 * Error cases. We reset the 'join' flag to zero, since we
+		 * haven't yet made use of it.
 		 */
-		badTypesArg:
-		resultPtr = Tcl_GetObjResult(interp);
+
+	    badTypesArg:
+		TclNewObj(resultPtr);
 		Tcl_AppendToObj(resultPtr, "bad argument to \"-types\": ", -1);
 		Tcl_AppendObjToObj(resultPtr, look);
+		Tcl_SetObjResult(interp, resultPtr);
 		result = TCL_ERROR;
 		join = 0;
 		goto endOfGlob;
-		badMacTypesArg:
+
+	    badMacTypesArg:
 		Tcl_SetObjResult(interp, Tcl_NewStringObj(
-		   "only one MacOS type or creator argument"
-		   " to \"-types\" allowed", -1));
+			"only one MacOS type or creator argument"
+			" to \"-types\" allowed", -1));
 		result = TCL_ERROR;
 		join = 0;
 		goto endOfGlob;
@@ -1366,15 +1557,16 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
     }
 
   skipTypes:
-    /* 
-     * Now we perform the actual glob below.  This may involve joining
-     * together the pattern arguments, dealing with particular file types
-     * etc.  We use a 'goto' to ensure we free any memory allocated along
-     * the way.
+    /*
+     * Now we perform the actual glob below. This may involve joining together
+     * the pattern arguments, dealing with particular file types etc. We use a
+     * 'goto' to ensure we free any memory allocated along the way.
      */
+
     objc -= i;
     objv += i;
     result = TCL_OK;
+
     if (join) {
 	if (dir != PATH_GENERAL) {
 	    Tcl_DStringInit(&prefix);
@@ -1386,66 +1578,70 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
 		Tcl_DStringAppend(&prefix, separators, 1);
 	    }
 	}
-	if (TclGlob(interp, Tcl_DStringValue(&prefix), pathOrDir,
-		globFlags, globTypes) != TCL_OK) {
+	if (TclGlob(interp, Tcl_DStringValue(&prefix), pathOrDir, globFlags,
+		globTypes) != TCL_OK) {
 	    result = TCL_ERROR;
 	    goto endOfGlob;
 	}
-    } else {
-	if (dir == PATH_GENERAL) {
-	    Tcl_DString str;
-	    for (i = 0; i < objc; i++) {
-		Tcl_DStringInit(&str);
-		if (dir == PATH_GENERAL) {
-		    Tcl_DStringAppend(&str, Tcl_DStringValue(&prefix),
-			    Tcl_DStringLength(&prefix));
-		}
-		string = Tcl_GetStringFromObj(objv[i], &length);
-		Tcl_DStringAppend(&str, string, length);
-		if (TclGlob(interp, Tcl_DStringValue(&str), pathOrDir,
-			globFlags, globTypes) != TCL_OK) {
-		    result = TCL_ERROR;
-		    Tcl_DStringFree(&str);
-		    goto endOfGlob;
-		}
+    } else if (dir == PATH_GENERAL) {
+	Tcl_DString str;
+
+	for (i = 0; i < objc; i++) {
+	    Tcl_DStringInit(&str);
+	    if (dir == PATH_GENERAL) {
+		Tcl_DStringAppend(&str, Tcl_DStringValue(&prefix),
+			Tcl_DStringLength(&prefix));
 	    }
-	    Tcl_DStringFree(&str);
-	} else {
-	    for (i = 0; i < objc; i++) {
-		string = Tcl_GetString(objv[i]);
-		if (TclGlob(interp, string, pathOrDir,
-			globFlags, globTypes) != TCL_OK) {
-		    result = TCL_ERROR;
-		    goto endOfGlob;
-		}
+	    string = Tcl_GetStringFromObj(objv[i], &length);
+	    Tcl_DStringAppend(&str, string, length);
+	    if (TclGlob(interp, Tcl_DStringValue(&str), pathOrDir, globFlags,
+		    globTypes) != TCL_OK) {
+		result = TCL_ERROR;
+		Tcl_DStringFree(&str);
+		goto endOfGlob;
+	    }
+	}
+	Tcl_DStringFree(&str);
+    } else {
+	for (i = 0; i < objc; i++) {
+	    string = Tcl_GetString(objv[i]);
+	    if (TclGlob(interp, string, pathOrDir, globFlags,
+		    globTypes) != TCL_OK) {
+		result = TCL_ERROR;
+		goto endOfGlob;
 	    }
 	}
     }
+
     if ((globFlags & TCL_GLOBMODE_NO_COMPLAIN) == 0) {
 	if (Tcl_ListObjLength(interp, Tcl_GetObjResult(interp),
 		&length) != TCL_OK) {
-	    /* This should never happen.  Maybe we should be more dramatic */
+	    /*
+	     * This should never happen. Maybe we should be more dramatic.
+	     */
+
 	    result = TCL_ERROR;
 	    goto endOfGlob;
 	}
+
 	if (length == 0) {
 	    Tcl_AppendResult(interp, "no files matched glob pattern",
-		    (join || (objc == 1)) ? " \"" : "s \"", (char *) NULL);
+		    (join || (objc == 1)) ? " \"" : "s \"", NULL);
 	    if (join) {
-		Tcl_AppendResult(interp, Tcl_DStringValue(&prefix),
-			(char *) NULL);
+		Tcl_AppendResult(interp, Tcl_DStringValue(&prefix), NULL);
 	    } else {
-		char *sep = "";
+		const char *sep = "";
 		for (i = 0; i < objc; i++) {
 		    string = Tcl_GetString(objv[i]);
-		    Tcl_AppendResult(interp, sep, string, (char *) NULL);
+		    Tcl_AppendResult(interp, sep, string, NULL);
 		    sep = " ";
 		}
 	    }
-	    Tcl_AppendResult(interp, "\"", (char *) NULL);
+	    Tcl_AppendResult(interp, "\"", NULL);
 	    result = TCL_ERROR;
 	}
     }
+
   endOfGlob:
     if (join || (dir == PATH_GENERAL)) {
 	Tcl_DStringFree(&prefix);
@@ -1460,7 +1656,7 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
 	if (globTypes->macCreator != NULL) {
 	    Tcl_DecrRefCount(globTypes->macCreator);
 	}
-	ckfree((char *) globTypes);
+	TclStackFree(interp, globTypes);
     }
     return result;
 }
@@ -1470,24 +1666,24 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
  *
  * TclGlob --
  *
- *	This procedure prepares arguments for the TclDoGlob call.
- *	It sets the separator string based on the platform, performs
- *      tilde substitution, and calls TclDoGlob.
- *      
- *      The interpreter's result, on entry to this function, must
- *      be a valid Tcl list (e.g. it could be empty), since we will
- *      lappend any new results to that list.  If it is not a valid
- *      list, this function will fail to do anything very meaningful.
+ *	This procedure prepares arguments for the DoGlob call. It sets the
+ *	separator string based on the platform, performs * tilde substitution,
+ *	and calls DoGlob.
+ *
+ *	The interpreter's result, on entry to this function, must be a valid
+ *	Tcl list (e.g. it could be empty), since we will lappend any new
+ *	results to that list. If it is not a valid list, this function will
+ *	fail to do anything very meaningful.
+ *
+ *	Note that if globFlags contains 'TCL_GLOBMODE_TAILS' then pathPrefix
+ *	cannot be NULL (it is only allowed with -dir or -path).
  *
  * Results:
- *	The return value is a standard Tcl result indicating whether
- *	an error occurred in globbing.  After a normal return the
- *	result in interp (set by TclDoGlob) holds all of the file names
- *	given by the pattern and unquotedPrefix arguments.  After an 
- *	error the result in interp will hold an error message, unless
- *	the 'TCL_GLOBMODE_NO_COMPLAIN' flag was given, in which case
- *	an error results in a TCL_OK return leaving the interpreter's
- *	result unmodified.
+ *	The return value is a standard Tcl result indicating whether an error
+ *	occurred in globbing. After a normal return the result in interp (set
+ *	by DoGlob) holds all of the file names given by the pattern and
+ *	pathPrefix arguments. After an error the result in interp will hold
+ *	an error message.
  *
  * Side effects:
  *	The 'pattern' is written to.
@@ -1497,195 +1693,349 @@ Tcl_GlobObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-TclGlob(interp, pattern, unquotedPrefix, globFlags, types)
-    Tcl_Interp *interp;		/* Interpreter for returning error message
-				 * or appending list of matching file names. */
-    char *pattern;		/* Glob pattern to match. Must not refer
-				 * to a static string. */
-    Tcl_Obj *unquotedPrefix;	/* Prefix to glob pattern, if non-null, which
-                             	 * is considered literally. */
-    int globFlags;		/* Stores or'ed combination of flags */
-    Tcl_GlobTypeData *types;	/* Struct containing acceptable types.
-				 * May be NULL. */
+TclGlob(
+    Tcl_Interp *interp,		/* Interpreter for returning error message or
+				 * appending list of matching file names. */
+    char *pattern,		/* Glob pattern to match. Must not refer to a
+				 * static string. */
+    Tcl_Obj *pathPrefix,	/* Path prefix to glob pattern, if non-null,
+				 * which is considered literally. */
+    int globFlags,		/* Stores or'ed combination of flags */
+    Tcl_GlobTypeData *types)	/* Struct containing acceptable types. May be
+				 * NULL. */
 {
-    char *separators;
-    CONST char *head;
+    const char *separators;
+    const char *head;
     char *tail, *start;
-    char c;
-    int result, prefixLen;
-    Tcl_DString buffer;
-    Tcl_Obj *oldResult;
+    int result;
+    Tcl_Obj *filenamesObj, *savedResultObj;
 
     separators = NULL;		/* lint. */
     switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    separators = "/";
-	    break;
-	case TCL_PLATFORM_WINDOWS:
-	    separators = "/\\:";
-	    break;
+    case TCL_PLATFORM_UNIX:
+	separators = "/";
+	break;
+    case TCL_PLATFORM_WINDOWS:
+	separators = "/\\:";
+	break;
     }
 
-    Tcl_DStringInit(&buffer);
-    if (unquotedPrefix != NULL) {
-	start = Tcl_GetString(unquotedPrefix);
-    } else {
-	start = pattern;
-    }
+    if (pathPrefix == NULL) {
+	char c;
+	Tcl_DString buffer;
+	Tcl_DStringInit(&buffer);
 
-    /*
-     * Perform tilde substitution, if needed.
-     */
+	start = pattern;
 
-    if (start[0] == '~') {
-	
 	/*
-	 * Find the first path separator after the tilde.
+	 * Perform tilde substitution, if needed.
 	 */
-	for (tail = start; *tail != '\0'; tail++) {
-	    if (*tail == '\\') {
-		if (strchr(separators, tail[1]) != NULL) {
+
+	if (start[0] == '~') {
+	    /*
+	     * Find the first path separator after the tilde.
+	     */
+
+	    for (tail = start; *tail != '\0'; tail++) {
+		if (*tail == '\\') {
+		    if (strchr(separators, tail[1]) != NULL) {
+			break;
+		    }
+		} else if (strchr(separators, *tail) != NULL) {
 		    break;
 		}
-	    } else if (strchr(separators, *tail) != NULL) {
-		break;
 	    }
-	}
 
-	/*
-	 * Determine the home directory for the specified user.  
-	 */
-	
-	c = *tail;
-	*tail = '\0';
-	if (globFlags & TCL_GLOBMODE_NO_COMPLAIN) {
-	    /* 
-	     * We will ignore any error message here, and we
-	     * don't want to mess up the interpreter's result.
+	    /*
+	     * Determine the home directory for the specified user.
 	     */
-	    head = DoTildeSubst(NULL, start+1, &buffer);
-	} else {
+
+	    c = *tail;
+	    *tail = '\0';
 	    head = DoTildeSubst(interp, start+1, &buffer);
-	}
-	*tail = c;
-	if (head == NULL) {
-	    if (globFlags & TCL_GLOBMODE_NO_COMPLAIN) {
-		return TCL_OK;
-	    } else {
+	    *tail = c;
+	    if (head == NULL) {
 		return TCL_ERROR;
 	    }
-	}
-	if (head != Tcl_DStringValue(&buffer)) {
-	    Tcl_DStringAppend(&buffer, head, -1);
-	}
-	if (unquotedPrefix != NULL) {
-	    Tcl_DStringAppend(&buffer, tail, -1);
+	    if (head != Tcl_DStringValue(&buffer)) {
+		Tcl_DStringAppend(&buffer, head, -1);
+	    }
+	    pathPrefix = Tcl_NewStringObj(Tcl_DStringValue(&buffer),
+		    Tcl_DStringLength(&buffer));
+	    Tcl_IncrRefCount(pathPrefix);
+	    globFlags |= TCL_GLOBMODE_DIR;
+	    if (c != '\0') {
+		tail++;
+	    }
+	    Tcl_DStringFree(&buffer);
+	} else {
 	    tail = pattern;
 	}
     } else {
+	Tcl_IncrRefCount(pathPrefix);
 	tail = pattern;
-	if (unquotedPrefix != NULL) {
-	    Tcl_DStringAppend(&buffer,Tcl_GetString(unquotedPrefix),-1);
-	}
     }
-    
-    /* 
-     * We want to remember the length of the current prefix,
-     * in case we are using TCL_GLOBMODE_TAILS.  Also if we
-     * are using TCL_GLOBMODE_DIR, we must make sure the
-     * prefix ends in a directory separator.
+
+    /*
+     * Handling empty path prefixes with glob patterns like 'C:' or
+     * 'c:////////' is a pain on Windows if we leave it too late, since these
+     * aren't really patterns at all! We therefore check the head of the
+     * pattern now for such cases, if we don't have an unquoted prefix yet.
+     *
+     * Similarly on Unix with '/' at the head of the pattern -- it just
+     * indicates the root volume, so we treat it as such.
      */
-    prefixLen = Tcl_DStringLength(&buffer);
-
-    if (prefixLen > 0) {
-	c = Tcl_DStringValue(&buffer)[prefixLen-1];
-	if (strchr(separators, c) == NULL) {
-	    /* 
-	     * If the prefix is a directory, make sure it ends in a
-	     * directory separator.
-	     */
-	    if (globFlags & TCL_GLOBMODE_DIR) {
-		Tcl_DStringAppend(&buffer,separators,1);
-		/* Try to borrow that separator from the tail */
-		if (*tail == *separators) {
+
+    if (tclPlatform == TCL_PLATFORM_WINDOWS) {
+	if (pathPrefix == NULL && tail[0] != '\0' && tail[1] == ':') {
+	    char *p = tail + 1;
+	    pathPrefix = Tcl_NewStringObj(tail, 1);
+	    while (*p != '\0') {
+		char c = p[1];
+		if (*p == '\\') {
+		    if (strchr(separators, c) != NULL) {
+			if (c == '\\') {
+			    c = '/';
+			}
+			Tcl_AppendToObj(pathPrefix, &c, 1);
+			p++;
+		    } else {
+			break;
+		    }
+		} else if (strchr(separators, *p) != NULL) {
+		    Tcl_AppendToObj(pathPrefix, p, 1);
+		} else {
+		    break;
+		}
+		p++;
+	    }
+	    tail = p;
+	    Tcl_IncrRefCount(pathPrefix);
+	} else if (pathPrefix == NULL && (tail[0] == '/'
+		|| (tail[0] == '\\' && tail[1] == '\\'))) {
+	    int driveNameLen;
+	    Tcl_Obj *driveName;
+	    Tcl_Obj *temp = Tcl_NewStringObj(tail, -1);
+	    Tcl_IncrRefCount(temp);
+
+	    switch (TclGetPathType(temp, NULL, &driveNameLen, &driveName)) {
+	    case TCL_PATH_VOLUME_RELATIVE: {
+		/*
+		 * Volume relative path which is equivalent to a path in the
+		 * root of the cwd's volume. We will actually return
+		 * non-volume-relative paths here. i.e. 'glob /foo*' will
+		 * return 'C:/foobar'. This is much the same as globbing for a
+		 * path with '\\' will return one with '/' on Windows.
+		 */
+
+		Tcl_Obj *cwd = Tcl_FSGetCwd(interp);
+
+		if (cwd == NULL) {
+		    Tcl_DecrRefCount(temp);
+		    return TCL_ERROR;
+		}
+		pathPrefix = Tcl_NewStringObj(Tcl_GetString(cwd), 3);
+		Tcl_DecrRefCount(cwd);
+		if (tail[0] == '/') {
 		    tail++;
+		} else {
+		    tail += 2;
 		}
+		Tcl_IncrRefCount(pathPrefix);
+		break;
 	    }
-	    prefixLen++;
+	    case TCL_PATH_ABSOLUTE:
+		/*
+		 * Absolute, possibly network path //Machine/Share. Use that
+		 * as the path prefix (it already has a refCount).
+		 */
+
+		pathPrefix = driveName;
+		tail += driveNameLen;
+		break;
+	    case TCL_PATH_RELATIVE:
+		/* Do nothing */
+		break;
+	    }
+	    Tcl_DecrRefCount(temp);
+	}
+
+	/*
+	 * ':' no longer needed as a separator. It is only relevant to the
+	 * beginning of the path.
+	 */
+
+	separators = "/\\";
+
+    } else if (tclPlatform == TCL_PLATFORM_UNIX) {
+	if (pathPrefix == NULL && tail[0] == '/') {
+	    pathPrefix = Tcl_NewStringObj(tail, 1);
+	    tail++;
+	    Tcl_IncrRefCount(pathPrefix);
 	}
     }
 
-    /* 
-     * We need to get the old result, in case it is over-written
-     * below when we still need it.
+    /*
+     * Finally if we still haven't managed to generate a path prefix, check if
+     * the path starts with a current volume.
+     */
+
+    if (pathPrefix == NULL) {
+	int driveNameLen;
+	Tcl_Obj *driveName;
+	if (TclFSNonnativePathType(tail, (int) strlen(tail), NULL,
+		&driveNameLen, &driveName) == TCL_PATH_ABSOLUTE) {
+	    pathPrefix = driveName;
+	    tail += driveNameLen;
+	}
+    }
+
+    /*
+     * To process a [glob] invokation, this function may be called multiple
+     * times. Each time, the previously discovered filenames are in the
+     * interpreter result. We stash that away here so the result is free for
+     * error messsages.
      */
-    oldResult = Tcl_GetObjResult(interp);
-    Tcl_IncrRefCount(oldResult);
+
+    savedResultObj = Tcl_GetObjResult(interp);
+    Tcl_IncrRefCount(savedResultObj);
     Tcl_ResetResult(interp);
-    
-    result = TclDoGlob(interp, separators, &buffer, tail, types);
-    
-    if (result != TCL_OK) {
-	if (globFlags & TCL_GLOBMODE_NO_COMPLAIN) {
-	    /* Put back the old result and reset the return code */
-	    Tcl_SetObjResult(interp, oldResult);
+    TclNewObj(filenamesObj);
+    Tcl_IncrRefCount(filenamesObj);
+
+    /*
+     * Now we do the actual globbing, adding filenames as we go to buffer in
+     * filenamesObj
+     */
+
+    if (*tail == '\0' && pathPrefix != NULL) {
+	/*
+	 * An empty pattern. This means 'pathPrefix' is actually a full path
+	 * of a file/directory we want to simply check for existence and type.
+	 */
+
+	if (types == NULL) {
+	    /*
+	     * We just want to check for existence. In this case we make it
+	     * easy on Tcl_FSMatchInDirectory and its sub-implementations by
+	     * not bothering them (even though they should support this
+	     * situation) and we just use the simple existence check with
+	     * Tcl_FSAccess.
+	     */
+
+	    if (Tcl_FSAccess(pathPrefix, F_OK) == 0) {
+		Tcl_ListObjAppendElement(interp, filenamesObj, pathPrefix);
+	    }
 	    result = TCL_OK;
+	} else {
+	    /*
+	     * We want to check for the correct type. Tcl_FSMatchInDirectory
+	     * is documented to do this for us, if we give it a NULL pattern.
+	     */
+
+	    result = Tcl_FSMatchInDirectory(interp, filenamesObj, pathPrefix,
+		    NULL, types);
 	}
     } else {
-	/* 
-	 * Now we must concatenate the 'oldResult' and the current
-	 * result, and then place that into the interpreter.
-	 * 
-	 * If we only want the tails, we must strip off the prefix now.
-	 * It may seem more efficient to pass the tails flag down into
-	 * TclDoGlob, Tcl_FSMatchInDirectory, but those functions are
-	 * continually adjusting the prefix as the various pieces of
-	 * the pattern are assimilated, so that would add a lot of
-	 * complexity to the code.  This way is a little slower (when
-	 * the -tails flag is given), but much simpler to code.
-	 */
+	result = DoGlob(interp, filenamesObj, separators, pathPrefix,
+		globFlags & TCL_GLOBMODE_DIR, tail, types);
+    }
+
+    /*
+     * Check for errors...
+     */
+
+    if (result != TCL_OK) {
+	TclDecrRefCount(filenamesObj);
+	TclDecrRefCount(savedResultObj);
+	if (pathPrefix != NULL) {
+	    Tcl_DecrRefCount(pathPrefix);
+	}
+	return result;
+    }
+
+    /*
+     * If we only want the tails, we must strip off the prefix now. It may
+     * seem more efficient to pass the tails flag down into DoGlob,
+     * Tcl_FSMatchInDirectory, but those functions are continually adjusting
+     * the prefix as the various pieces of the pattern are assimilated, so
+     * that would add a lot of complexity to the code. This way is a little
+     * slower (when the -tails flag is given), but much simpler to code.
+     *
+     * We do it by rewriting the result list in-place.
+     */
+
+    if (globFlags & TCL_GLOBMODE_TAILS) {
 	int objc, i;
 	Tcl_Obj **objv;
+	int prefixLen;
+	const char *pre;
 
-	/* Ensure sole ownership */
-	if (Tcl_IsShared(oldResult)) {
-	    Tcl_DecrRefCount(oldResult);
-	    oldResult = Tcl_DuplicateObj(oldResult);
-	    Tcl_IncrRefCount(oldResult);
+	/*
+	 * If this length has never been set, set it here.
+	 */
+
+	if (pathPrefix == NULL) {
+	    Tcl_Panic("Called TclGlob with TCL_GLOBMODE_TAILS and pathPrefix==NULL");
 	}
 
-	Tcl_ListObjGetElements(NULL, Tcl_GetObjResult(interp), 
-			       &objc, &objv);
+	pre = Tcl_GetStringFromObj(pathPrefix, &prefixLen);
+	if (prefixLen > 0
+		&& (strchr(separators, pre[prefixLen-1]) == NULL)) {
+	    /*
+	     * If we're on Windows and the prefix is a volume relative one
+	     * like 'C:', then there won't be a path separator in between, so
+	     * no need to skip it here.
+	     */
+
+	    if ((tclPlatform != TCL_PLATFORM_WINDOWS) || (prefixLen != 2)
+		    || (pre[1] != ':')) {
+		prefixLen++;
+	    }
+	}
+
+	Tcl_ListObjGetElements(NULL, filenamesObj, &objc, &objv);
 	for (i = 0; i< objc; i++) {
-	    Tcl_Obj* elt;
-	    if (globFlags & TCL_GLOBMODE_TAILS) {
-		int len;
-		char *oldStr = Tcl_GetStringFromObj(objv[i],&len);
-		if (len == prefixLen) {
-		    if ((pattern[0] == '\0')
+	    int len;
+	    const char *oldStr = Tcl_GetStringFromObj(objv[i], &len);
+	    Tcl_Obj *elem;
+
+	    if (len == prefixLen) {
+		if ((pattern[0] == '\0')
 			|| (strchr(separators, pattern[0]) == NULL)) {
-			elt = Tcl_NewStringObj(".",1);
-		    } else {
-			elt = Tcl_NewStringObj("/",1);
-		    }
+		    TclNewLiteralStringObj(elem, ".");
 		} else {
-		    elt = Tcl_NewStringObj(oldStr + prefixLen, 
-						len - prefixLen);
+		    TclNewLiteralStringObj(elem, "/");
 		}
 	    } else {
-		elt = objv[i];
+		elem = Tcl_NewStringObj(oldStr+prefixLen, len-prefixLen);
 	    }
-	    /* Assumption that 'oldResult' is a valid list */
-	    Tcl_ListObjAppendElement(interp, oldResult, elt);
+	    Tcl_ListObjReplace(interp, filenamesObj, i, 1, 1, &elem);
 	}
-	Tcl_SetObjResult(interp, oldResult);
     }
-    /* 
-     * Release our temporary copy.  All code paths above must
-     * end here so we free our reference.
+
+    /*
+     * Now we have a list of discovered filenames in filenamesObj and a list
+     * of previously discovered (saved earlier from the interpreter result) in
+     * savedResultObj. Merge them and put them back in the interpreter result.
      */
-    Tcl_DecrRefCount(oldResult);
-    Tcl_DStringFree(&buffer);
+
+    if (Tcl_IsShared(savedResultObj)) {
+	TclDecrRefCount(savedResultObj);
+	savedResultObj = Tcl_DuplicateObj(savedResultObj);
+	Tcl_IncrRefCount(savedResultObj);
+    }
+    if (Tcl_ListObjAppendList(interp, savedResultObj, filenamesObj) != TCL_OK){
+	result = TCL_ERROR;
+    } else {
+	Tcl_SetObjResult(interp, savedResultObj);
+    }
+    TclDecrRefCount(savedResultObj);
+    TclDecrRefCount(filenamesObj);
+    if (pathPrefix != NULL) {
+	Tcl_DecrRefCount(pathPrefix);
+    }
+
     return result;
 }
 
@@ -1694,14 +2044,13 @@ TclGlob(interp, pattern, unquotedPrefix, globFlags, types)
  *
  * SkipToChar --
  *
- *	This function traverses a glob pattern looking for the next
- *	unquoted occurance of the specified character at the same braces
- *	nesting level.
+ *	This function traverses a glob pattern looking for the next unquoted
+ *	occurance of the specified character at the same braces nesting level.
  *
  * Results:
- *	Updates stringPtr to point to the matching character, or to
- *	the end of the string if nothing matched.  The return value
- *	is 1 if a match was found at the top level, otherwise it is 0.
+ *	Updates stringPtr to point to the matching character, or to the end of
+ *	the string if nothing matched. The return value is 1 if a match was
+ *	found at the top level, otherwise it is 0.
  *
  * Side effects:
  *	None.
@@ -1710,9 +2059,9 @@ TclGlob(interp, pattern, unquotedPrefix, globFlags, types)
  */
 
 static int
-SkipToChar(stringPtr, match)
-    char **stringPtr;			/* Pointer string to check. */
-    char *match;			/* Pointer to character to find. */
+SkipToChar(
+    char **stringPtr,		/* Pointer string to check. */
+    int match)			/* Character to find. */
 {
     int quoted, level;
     register char *p;
@@ -1725,7 +2074,7 @@ SkipToChar(stringPtr, match)
 	    quoted = 0;
 	    continue;
 	}
-	if ((level == 0) && (*p == *match)) {
+	if ((level == 0) && (*p == match)) {
 	    *stringPtr = p;
 	    return 1;
 	}
@@ -1744,23 +2093,23 @@ SkipToChar(stringPtr, match)
 /*
  *----------------------------------------------------------------------
  *
- * TclDoGlob --
+ * DoGlob --
  *
- *	This recursive procedure forms the heart of the globbing
- *	code.  It performs a depth-first traversal of the tree
- *	given by the path name to be globbed.  The directory and
- *	remainder are assumed to be native format paths.  The prefix 
- *	contained in 'headPtr' is not used as a glob pattern, simply
- *	as a path specifier, so it can contain unquoted glob-sensitive
- *	characters (if the directories to which it points contain
- *	such strange characters).
+ *	This recursive procedure forms the heart of the globbing code. It
+ *	performs a depth-first traversal of the tree given by the path name to
+ *	be globbed and the pattern. The directory and remainder are assumed to
+ *	be native format paths. The prefix contained in 'pathPtr' is either a
+ *	directory or path from which to start the search (or NULL). If pathPtr
+ *	is NULL, then the pattern must not start with an absolute path
+ *	specification (that case should be handled by moving the absolute path
+ *	prefix into pathPtr before calling DoGlob).
  *
  * Results:
- *	The return value is a standard Tcl result indicating whether
- *	an error occurred in globbing.  After a normal return the
- *	result in interp will be set to hold all of the file names
- *	given by the dir and rem arguments.  After an error the
- *	result in interp will hold an error message.
+ *	The return value is a standard Tcl result indicating whether an error
+ *	occurred in globbing. After a normal return the result in interp will
+ *	be set to hold all of the file names given by the dir and remaining
+ *	arguments. After an error the result in interp will hold an error
+ *	message.
  *
  * Side effects:
  *	None.
@@ -1768,140 +2117,98 @@ SkipToChar(stringPtr, match)
  *----------------------------------------------------------------------
  */
 
-int
-TclDoGlob(interp, separators, headPtr, tail, types)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting
+static int
+DoGlob(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting
 				 * (e.g. unmatched brace). */
-    char *separators;		/* String containing separator characters
-				 * that should be used to identify globbing
+    Tcl_Obj *matchesObj,	/* Unshared list object in which to place all
+				 * resulting filenames. Caller allocates and
+				 * deallocates; DoGlob must not touch the
+				 * refCount of this object. */
+    const char *separators,	/* String containing separator characters that
+				 * should be used to identify globbing
 				 * boundaries. */
-    Tcl_DString *headPtr;	/* Completely expanded prefix. */
-    char *tail;			/* The unexpanded remainder of the path.
-				 * Must not be a pointer to a static string. */
-    Tcl_GlobTypeData *types;	/* List object containing list of acceptable 
-                            	 * types. May be NULL. */
+    Tcl_Obj *pathPtr,		/* Completely expanded prefix. */
+    int flags,			/* If non-zero then pathPtr is a directory */
+    char *pattern,		/* The pattern to match against. Must not be a
+				 * pointer to a static string. */
+    Tcl_GlobTypeData *types)	/* List object containing list of acceptable
+				 * types. May be NULL. */
 {
     int baseLength, quoted, count;
     int result = TCL_OK;
-    char *name, *p, *openBrace, *closeBrace, *firstSpecialChar, savedChar;
-    /*
-    char lastChar = 0;
-    */
-    
-    int length = Tcl_DStringLength(headPtr);
+    char *name, *p, *openBrace, *closeBrace, *firstSpecialChar;
+    Tcl_Obj *joinedPtr;
 
     /*
-    if (length > 0) {
-	lastChar = Tcl_DStringValue(headPtr)[length-1];
-    }
-    */
-
-    /*
-     * Consume any leading directory separators, leaving tail pointing
-     * just past the last initial separator.
+     * Consume any leading directory separators, leaving pattern pointing just
+     * past the last initial separator.
      */
 
     count = 0;
-    name = tail;
-    for (; *tail != '\0'; tail++) {
-	if (*tail == '\\') {
-	    /* 
+    name = pattern;
+    for (; *pattern != '\0'; pattern++) {
+	if (*pattern == '\\') {
+	    /*
 	     * If the first character is escaped, either we have a directory
-	     * separator, or we have any other character.  In the latter case
-	     * the rest of tail is a pattern, and we must break from the loop.
-	     * This is particularly important on Windows where '\' is both
-	     * the escaping character and a directory separator.
+	     * separator, or we have any other character. In the latter case
+	     * the rest is a pattern, and we must break from the loop. This
+	     * is particularly important on Windows where '\' is both the
+	     * escaping character and a directory separator.
 	     */
-	    if (strchr(separators, tail[1]) != NULL) {
-		tail++;
+
+	    if (strchr(separators, pattern[1]) != NULL) {
+		pattern++;
 	    } else {
 		break;
 	    }
-	} else if (strchr(separators, *tail) == NULL) {
+	} else if (strchr(separators, *pattern) == NULL) {
 	    break;
 	}
-	    if (*tail == '\\') {
-		Tcl_DStringAppend(headPtr, separators, 1);
-	    } else {
-		Tcl_DStringAppend(headPtr, tail, 1);
-	    }
 	count++;
     }
 
     /*
-     * Deal with path separators.  On the Mac, we have to watch out
-     * for multiple separators, since they are special in Mac-style
-     * paths.
-     */
-
-    switch (tclPlatform) {
-	case TCL_PLATFORM_WINDOWS:
-	    /*
-	     * If this is a drive relative path, add the colon and the
-	     * trailing slash if needed.  Otherwise add the slash if
-	     * this is the first absolute element, or a later relative
-	     * element.  Add an extra slash if this is a UNC path.
-
-	    if (*name == ':') {
-		Tcl_DStringAppend(headPtr, ":", 1);
-		if (count > 1) {
-		    Tcl_DStringAppend(headPtr, "/", 1);
-		}
-	    } else if ((*tail != '\0')
-		    && (((length > 0)
-			    && (strchr(separators, lastChar) == NULL))
-			    || ((length == 0) && (count > 0)))) {
-		Tcl_DStringAppend(headPtr, "/", 1);
-		if ((length == 0) && (count > 1)) {
-		    Tcl_DStringAppend(headPtr, "/", 1);
-		}
-	    }
-	     */
-	    
-	    break;
-	case TCL_PLATFORM_UNIX: {
-	    /*
-	     * Add a separator if this is the first absolute element, or
-	     * a later relative element.
-
-	    if ((*tail != '\0')
-		    && (((length > 0)
-			    && (strchr(separators, lastChar) == NULL))
-			    || ((length == 0) && (count > 0)))) {
-		Tcl_DStringAppend(headPtr, "/", 1);
-	    }
-	     */
-	    break;
-	}
-    }
-
-    /*
-     * Look for the first matching pair of braces or the first
-     * directory separator that is not inside a pair of braces.
+     * Look for the first matching pair of braces or the first directory
+     * separator that is not inside a pair of braces.
      */
 
     openBrace = closeBrace = NULL;
     quoted = 0;
-    for (p = tail; *p != '\0'; p++) {
+    for (p = pattern; *p != '\0'; p++) {
 	if (quoted) {
 	    quoted = 0;
+
 	} else if (*p == '\\') {
 	    quoted = 1;
 	    if (strchr(separators, p[1]) != NULL) {
-		break;			/* Quoted directory separator. */
+		/*
+		 * Quoted directory separator.
+		 */
+		break;
 	    }
+
 	} else if (strchr(separators, *p) != NULL) {
-	    break;			/* Unquoted directory separator. */
+	    /*
+	     * Unquoted directory separator.
+	     */
+	    break;
+
 	} else if (*p == '{') {
 	    openBrace = p;
 	    p++;
-	    if (SkipToChar(&p, "}")) {
-		closeBrace = p;		/* Balanced braces. */
+	    if (SkipToChar(&p, '}')) {
+		/*
+		 * Balanced braces.
+		 */
+
+		closeBrace = p;
 		break;
 	    }
 	    Tcl_SetResult(interp, "unmatched open-brace in file name",
 		    TCL_STATIC);
 	    return TCL_ERROR;
+
 	} else if (*p == '}') {
 	    Tcl_SetResult(interp, "unmatched close-brace in file name",
 		    TCL_STATIC);
@@ -1916,28 +2223,27 @@ TclDoGlob(interp, separators, headPtr, tail, types)
     if (openBrace != NULL) {
 	char *element;
 	Tcl_DString newName;
+
 	Tcl_DStringInit(&newName);
 
 	/*
-	 * For each element within in the outermost pair of braces,
-	 * append the element and the remainder to the fixed portion
-	 * before the first brace and recursively call TclDoGlob.
+	 * For each element within in the outermost pair of braces, append the
+	 * element and the remainder to the fixed portion before the first
+	 * brace and recursively call DoGlob.
 	 */
 
-	Tcl_DStringAppend(&newName, tail, openBrace-tail);
+	Tcl_DStringAppend(&newName, pattern, openBrace-pattern);
 	baseLength = Tcl_DStringLength(&newName);
-	length = Tcl_DStringLength(headPtr);
 	*closeBrace = '\0';
 	for (p = openBrace; p != closeBrace; ) {
 	    p++;
 	    element = p;
-	    SkipToChar(&p, ",");
-	    Tcl_DStringSetLength(headPtr, length);
+	    SkipToChar(&p, ',');
 	    Tcl_DStringSetLength(&newName, baseLength);
 	    Tcl_DStringAppend(&newName, element, p-element);
 	    Tcl_DStringAppend(&newName, closeBrace+1, -1);
-	    result = TclDoGlob(interp, separators, headPtr, 
-			       Tcl_DStringValue(&newName), types);
+	    result = DoGlob(interp, matchesObj, separators, pathPtr, flags,
+		    Tcl_DStringValue(&newName), types);
 	    if (result != TCL_OK) {
 		break;
 	    }
@@ -1948,254 +2254,266 @@ TclDoGlob(interp, separators, headPtr, tail, types)
     }
 
     /*
-     * At this point, there are no more brace substitutions to perform on
-     * this path component.  The variable p is pointing at a quoted or
-     * unquoted directory separator or the end of the string.  So we need
-     * to check for special globbing characters in the current pattern.
-     * We avoid modifying tail if p is pointing at the end of the string.
+     * At this point, there are no more brace substitutions to perform on this
+     * path component. The variable p is pointing at a quoted or unquoted
+     * directory separator or the end of the string. So we need to check for
+     * special globbing characters in the current pattern. We avoid modifying
+     * pattern if p is pointing at the end of the string.
+     *
+     * If we find any globbing characters, then we must call
+     * Tcl_FSMatchInDirectory. If we're at the end of the string, then that's
+     * all we need to do. If we're not at the end of the string, then we must
+     * recurse, so we do that below.
+     *
+     * Alternatively, if there are no globbing characters then again there are
+     * two cases. If we're at the end of the string, we just need to check for
+     * the given path's existence and type. If we're not at the end of the
+     * string, we recurse.
      */
 
     if (*p != '\0') {
+	char savedChar = *p;
 
 	/*
-	 * Note that we are modifying the string in place.  This won't work
-	 * if the string is a static.
+	 * Note that we are modifying the string in place. This won't work if
+	 * the string is a static.
 	 */
 
-	savedChar = *p;
 	*p = '\0';
-	firstSpecialChar = strpbrk(tail, "*[]?\\");
+	firstSpecialChar = strpbrk(pattern, "*[]?\\");
 	*p = savedChar;
     } else {
-	firstSpecialChar = strpbrk(tail, "*[]?\\");
+	firstSpecialChar = strpbrk(pattern, "*[]?\\");
     }
 
     if (firstSpecialChar != NULL) {
-	int ret;
-	Tcl_Obj *head = Tcl_NewStringObj(Tcl_DStringValue(headPtr),-1);
-	Tcl_IncrRefCount(head);
 	/*
-	 * Look for matching files in the given directory.  The
-	 * implementation of this function is platform specific.  For
-	 * each file that matches, it will add the match onto the
-	 * resultPtr given.
+	 * Look for matching files in the given directory. The implementation
+	 * of this function is filesystem specific. For each file that
+	 * matches, it will add the match onto the resultPtr given.
 	 */
+
+	static Tcl_GlobTypeData dirOnly = {
+	    TCL_GLOB_TYPE_DIR, 0, NULL, NULL
+	};
+	char save = *p;
+	Tcl_Obj *subdirsPtr;
+
 	if (*p == '\0') {
-	    ret = Tcl_FSMatchInDirectory(interp, Tcl_GetObjResult(interp), 
-					 head, tail, types);
-	} else {
-	    /* 
-	     * We do the recursion ourselves.  This makes implementing
-	     * Tcl_FSMatchInDirectory for each filesystem much easier.
-	     */
-	    Tcl_GlobTypeData dirOnly = { TCL_GLOB_TYPE_DIR, 0, NULL, NULL };
-	    char save = *p;
-	    Tcl_Obj *resultPtr;
-
-	    resultPtr = Tcl_NewListObj(0, NULL);
-	    Tcl_IncrRefCount(resultPtr);
-	    *p = '\0';
-	    ret = Tcl_FSMatchInDirectory(interp, resultPtr, 
-					 head, tail, &dirOnly);
-	    *p = save;
-	    if (ret == TCL_OK) {
-		int resLength, repair = -1;
-		ret = Tcl_ListObjLength(interp, resultPtr, &resLength);
-		if (ret == TCL_OK) {
-		    int i;
-		    for (i =0; i< resLength; i++) {
-			Tcl_Obj *elt;
-			Tcl_DString ds;
-			Tcl_ListObjIndex(NULL, resultPtr, i, &elt);
-			Tcl_DStringInit(&ds);
-			if (Tcl_GetString(elt)[0] == '~') {
-			    Tcl_Obj *paths = Tcl_GetObjResult(interp);
-
-			    Tcl_ListObjLength(NULL, paths, &repair);
-			    Tcl_DStringAppend(&ds, "./", 2);
-			}
-			Tcl_DStringAppend(&ds, Tcl_GetString(elt), -1);
-			    Tcl_DStringAppend(&ds, "/",1);
-			ret = TclDoGlob(interp, separators, &ds, p+1, types);
-			Tcl_DStringFree(&ds);
-			if (ret != TCL_OK) {
-			    break;
-			}
-			if (repair >= 0) {
-			    Tcl_Obj *paths = Tcl_GetObjResult(interp);
-			    int end;
-
-			    Tcl_ListObjLength(NULL, paths, &end);
-			    while (repair < end) {
-				CONST char *bytes;
-				int numBytes;
-				Tcl_Obj *fixme, *newObj;
-				Tcl_ListObjIndex(NULL, paths, repair, &fixme);
-				bytes = Tcl_GetStringFromObj(fixme, &numBytes);
-				newObj = Tcl_NewStringObj(bytes+2, numBytes-2);
-				Tcl_ListObjReplace(NULL, paths, repair, 1,
-					1, &newObj);
-				repair++;
-			    }
-			    repair = -1;
-			}
+	    return Tcl_FSMatchInDirectory(interp, matchesObj, pathPtr,
+		    pattern, types);
+	}
+
+	/*
+	 * We do the recursion ourselves. This makes implementing
+	 * Tcl_FSMatchInDirectory for each filesystem much easier.
+	 */
+
+	*p = '\0';
+	TclNewObj(subdirsPtr);
+	Tcl_IncrRefCount(subdirsPtr);
+	result = Tcl_FSMatchInDirectory(interp, subdirsPtr, pathPtr,
+		pattern, &dirOnly);
+	*p = save;
+	if (result == TCL_OK) {
+	    int subdirc, i, repair = -1;
+	    Tcl_Obj **subdirv;
+
+	    result = Tcl_ListObjGetElements(interp, subdirsPtr,
+		    &subdirc, &subdirv);
+	    for (i=0; result==TCL_OK && i<subdirc; i++) {
+		Tcl_Obj *copy = NULL;
+
+		if (pathPtr == NULL && Tcl_GetString(subdirv[i])[0] == '~') {
+		    Tcl_ListObjLength(NULL, matchesObj, &repair);
+		    copy = subdirv[i];
+		    subdirv[i] = Tcl_NewStringObj("./", 2);
+		    Tcl_AppendObjToObj(subdirv[i], copy);
+		    Tcl_IncrRefCount(subdirv[i]);
+		}
+		result = DoGlob(interp, matchesObj, separators, subdirv[i],
+			1, p+1, types);
+		if (copy) {
+		    int end;
+
+		    Tcl_DecrRefCount(subdirv[i]);
+		    subdirv[i] = copy;
+		    Tcl_ListObjLength(NULL, matchesObj, &end);
+		    while (repair < end) {
+			const char *bytes;
+			int numBytes;
+			Tcl_Obj *fixme, *newObj;
+
+			Tcl_ListObjIndex(NULL, matchesObj, repair, &fixme);
+			bytes = Tcl_GetStringFromObj(fixme, &numBytes);
+			newObj = Tcl_NewStringObj(bytes+2, numBytes-2);
+			Tcl_ListObjReplace(NULL, matchesObj, repair, 1,
+				1, &newObj);
+			repair++;
 		    }
+		    repair = -1;
 		}
 	    }
-	    Tcl_DecrRefCount(resultPtr);
 	}
-	Tcl_DecrRefCount(head);
-	return ret;
+	TclDecrRefCount(subdirsPtr);
+	return result;
     }
-    Tcl_DStringAppend(headPtr, tail, p-tail);
-    if (*p != '\0') {
-	return TclDoGlob(interp, separators, headPtr, p, types);
-    } else {
+
+    /*
+     * We reach here with no pattern char in current section
+     */
+
+    if (*p == '\0') {
+	int length;
+	Tcl_DString append;
+
 	/*
 	 * This is the code path reached by a command like 'glob foo'.
 	 *
-	 * There are no more wildcards in the pattern and no more
-	 * unprocessed characters in the tail, so now we can construct
-	 * the path, and pass it to Tcl_FSMatchInDirectory with an
-	 * empty pattern to verify the existence of the file and check
-	 * it is of the correct type (if a 'types' flag it given -- if
-	 * no such flag was given, we could just use 'Tcl_FSLStat', but
-	 * for simplicity we keep to a common approach).
+	 * There are no more wildcards in the pattern and no more unprocessed
+	 * characters in the pattern, so now we can construct the path, and
+	 * pass it to Tcl_FSMatchInDirectory with an empty pattern to verify
+	 * the existence of the file and check it is of the correct type (if a
+	 * 'types' flag it given -- if no such flag was given, we could just
+	 * use 'Tcl_FSLStat', but for simplicity we keep to a common
+	 * approach).
 	 */
 
-	Tcl_Obj *nameObj;
+	Tcl_DStringInit(&append);
+	Tcl_DStringAppend(&append, pattern, p-pattern);
+
+	if (pathPtr != NULL) {
+	    (void) Tcl_GetStringFromObj(pathPtr, &length);
+	} else {
+	    length = 0;
+	}
 
 	switch (tclPlatform) {
-	    case TCL_PLATFORM_WINDOWS: {
-		if (Tcl_DStringLength(headPtr) == 0) {
-		    if (((*name == '\\') && (name[1] == '/' || name[1] == '\\'))
-			    || (*name == '/')) {
-			Tcl_DStringAppend(headPtr, "/", 1);
-		    } else {
-			Tcl_DStringAppend(headPtr, ".", 1);
-		    }
-		}
-		/* 
-		 * Convert to forward slashes.  This is required to pass
-		 * some Tcl tests.  We should probably remove the conversions
-		 * here and in tclWinFile.c, since they aren't needed since
-		 * the dropping of support for Win32s.
-		 */
-		for (p = Tcl_DStringValue(headPtr); *p != '\0'; p++) {
-		    if (*p == '\\') {
-			*p = '/';
-		    }
+	case TCL_PLATFORM_WINDOWS:
+	    if (length == 0 && (Tcl_DStringLength(&append) == 0)) {
+		if (((*name == '\\') && (name[1] == '/' ||
+			name[1] == '\\')) || (*name == '/')) {
+		    Tcl_DStringAppend(&append, "/", 1);
+		} else {
+		    Tcl_DStringAppend(&append, ".", 1);
 		}
-		break;
 	    }
-	    case TCL_PLATFORM_UNIX: {
-		if (Tcl_DStringLength(headPtr) == 0) {
-		    if ((*name == '\\' && name[1] == '/') || (*name == '/')) {
-			Tcl_DStringAppend(headPtr, "/", 1);
-		    } else {
-			Tcl_DStringAppend(headPtr, ".", 1);
-		    }
+
+	    break;
+
+	case TCL_PLATFORM_UNIX:
+	    if (length == 0 && (Tcl_DStringLength(&append) == 0)) {
+		if ((*name == '\\' && name[1] == '/') || (*name == '/')) {
+		    Tcl_DStringAppend(&append, "/", 1);
+		} else {
+		    Tcl_DStringAppend(&append, ".", 1);
 		}
-		break;
 	    }
+	    break;
 	}
-	/* Common for all platforms */
-	name = Tcl_DStringValue(headPtr);
-	nameObj = Tcl_NewStringObj(name, Tcl_DStringLength(headPtr));
 
-	Tcl_IncrRefCount(nameObj);
-	result = Tcl_FSMatchInDirectory(interp, Tcl_GetObjResult(interp),
-		nameObj, NULL, types);
-	Tcl_DecrRefCount(nameObj);
-	return result;
-    }
-}
+	/*
+	 * Common for all platforms.
+	 */
 
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclFileDirname
- *
- *	This procedure calculates the directory above a given 
- *	path: basically 'file dirname'.  It is used both by
- *	the 'dirname' subcommand of file and by code in tclIOUtil.c.
- *
- * Results:
- *	NULL if an error occurred, otherwise a Tcl_Obj owned by
- *	the caller (i.e. most likely with refCount 1).
- *
- * Side effects:
- *      None.
- *
- *---------------------------------------------------------------------------
- */
+	if (pathPtr == NULL) {
+	    joinedPtr = Tcl_NewStringObj(Tcl_DStringValue(&append),
+		    Tcl_DStringLength(&append));
+	} else if (flags) {
+	    joinedPtr = TclNewFSPathObj(pathPtr, Tcl_DStringValue(&append),
+		    Tcl_DStringLength(&append));
+	} else {
+	    joinedPtr = Tcl_DuplicateObj(pathPtr);
+	    if (strchr(separators, Tcl_DStringValue(&append)[0]) == NULL) {
+		/*
+		 * The current prefix must end in a separator.
+		 */
 
-Tcl_Obj*
-TclFileDirname(interp, pathPtr)
-    Tcl_Interp *interp;		/* Used for error reporting */
-    Tcl_Obj *pathPtr;           /* Path to take dirname of */
-{
-    int splitElements;
-    Tcl_Obj *splitPtr;
-    Tcl_Obj *splitResultPtr = NULL;
-
-    /* 
-     * The behaviour we want here is slightly different to
-     * the standard Tcl_FSSplitPath in the handling of home
-     * directories; Tcl_FSSplitPath preserves the "~" while 
-     * this code computes the actual full path name, if we
-     * had just a single component.
-     */	    
-    splitPtr = Tcl_FSSplitPath(pathPtr, &splitElements);
-    if ((splitElements == 1) && (Tcl_GetString(pathPtr)[0] == '~')) {
-	Tcl_DecrRefCount(splitPtr);
-	splitPtr = Tcl_FSGetNormalizedPath(interp, pathPtr);
-	if (splitPtr == NULL) {
-	    return NULL;
+		int len;
+		const char *joined = Tcl_GetStringFromObj(joinedPtr,&len);
+
+		if (strchr(separators, joined[len-1]) == NULL) {
+		    Tcl_AppendToObj(joinedPtr, "/", 1);
+		}
+	    }
+	    Tcl_AppendToObj(joinedPtr, Tcl_DStringValue(&append),
+		    Tcl_DStringLength(&append));
 	}
-	splitPtr = Tcl_FSSplitPath(splitPtr, &splitElements);
+	Tcl_IncrRefCount(joinedPtr);
+	Tcl_DStringFree(&append);
+	result = Tcl_FSMatchInDirectory(interp, matchesObj, joinedPtr, NULL,
+		types);
+	Tcl_DecrRefCount(joinedPtr);
+	return result;
     }
 
     /*
-     * Return all but the last component.  If there is only one
-     * component, return it if the path was non-relative, otherwise
-     * return the current directory.
+     * If it's not the end of the string, we must recurse
      */
 
-    if (splitElements > 1) {
-	splitResultPtr = Tcl_FSJoinPath(splitPtr, splitElements - 1);
-    } else if (splitElements == 0 || 
-      (Tcl_FSGetPathType(pathPtr) == TCL_PATH_RELATIVE)) {
-	splitResultPtr = Tcl_NewStringObj(".", 1);
+    if (pathPtr == NULL) {
+	joinedPtr = Tcl_NewStringObj(pattern, p-pattern);
+    } else if (flags) {
+	joinedPtr = TclNewFSPathObj(pathPtr, pattern, p-pattern);
     } else {
-	Tcl_ListObjIndex(NULL, splitPtr, 0, &splitResultPtr);
+	joinedPtr = Tcl_DuplicateObj(pathPtr);
+	if (strchr(separators, pattern[0]) == NULL) {
+	    /*
+	     * The current prefix must end in a separator, unless this is a
+	     * volume-relative path. In particular globbing in Windows shares,
+	     * when not using -dir or -path, e.g. 'glob [file join
+	     * //machine/share/subdir *]' requires adding a separator here.
+	     * This behaviour is not currently tested for in the test suite.
+	     */
+
+	    int len;
+	    const char *joined = Tcl_GetStringFromObj(joinedPtr,&len);
+
+	    if (strchr(separators, joined[len-1]) == NULL) {
+		if (Tcl_FSGetPathType(pathPtr) != TCL_PATH_VOLUME_RELATIVE) {
+		    Tcl_AppendToObj(joinedPtr, "/", 1);
+		}
+	    }
+	}
+	Tcl_AppendToObj(joinedPtr, pattern, p-pattern);
     }
-    Tcl_IncrRefCount(splitResultPtr);
-    Tcl_DecrRefCount(splitPtr);
-    return splitResultPtr;
+
+    Tcl_IncrRefCount(joinedPtr);
+    result = DoGlob(interp, matchesObj, separators, joinedPtr, 1, p, types);
+    Tcl_DecrRefCount(joinedPtr);
+
+    return result;
 }
 
 /*
  *---------------------------------------------------------------------------
  *
- * Tcl_AllocStatBuf
+ * Tcl_AllocStatBuf --
  *
- *     This procedure allocates a Tcl_StatBuf on the heap.  It exists
- *     so that extensions may be used unchanged on systems where
- *     largefile support is optional.
+ *	This procedure allocates a Tcl_StatBuf on the heap. It exists so that
+ *	extensions may be used unchanged on systems where largefile support is
+ *	optional.
  *
  * Results:
- *     A pointer to a Tcl_StatBuf which may be deallocated by being
- *     passed to ckfree().
+ *	A pointer to a Tcl_StatBuf which may be deallocated by being passed to
+ *	ckfree().
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *---------------------------------------------------------------------------
  */
 
 Tcl_StatBuf *
-Tcl_AllocStatBuf() {
+Tcl_AllocStatBuf(void)
+{
     return (Tcl_StatBuf *) ckalloc(sizeof(Tcl_StatBuf));
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclFileSystem.h b/generic/tclFileSystem.h
new file mode 100644
index 0000000..02cb424
--- /dev/null
+++ b/generic/tclFileSystem.h
@@ -0,0 +1,74 @@
+/*
+ * tclFileSystem.h --
+ *
+ *	This file contains the common defintions and prototypes for use by
+ *	Tcl's filesystem and path handling layers.
+ *
+ * Copyright (c) 2003 Vince Darley.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef _TCLFILESYSTEM
+#define _TCLFILESYSTEM
+
+#include "tcl.h"
+
+/*
+ * The internal TclFS API provides routines for handling and manipulating
+ * paths efficiently, taking direct advantage of the "path" Tcl_Obj type.
+ *
+ * These functions are not exported at all at present.
+ */
+
+MODULE_SCOPE int	TclFSCwdPointerEquals(Tcl_Obj **pathPtrPtr);
+MODULE_SCOPE int	TclFSNormalizeToUniquePath(Tcl_Interp *interp,
+			    Tcl_Obj *pathPtr, int startAt);
+MODULE_SCOPE Tcl_Obj *	TclFSMakePathRelative(Tcl_Interp *interp,
+			    Tcl_Obj *pathPtr, Tcl_Obj *cwdPtr);
+MODULE_SCOPE int	TclFSEnsureEpochOk(Tcl_Obj *pathPtr,
+			    Tcl_Filesystem **fsPtrPtr);
+MODULE_SCOPE void	TclFSSetPathDetails(Tcl_Obj *pathPtr,
+			    Tcl_Filesystem *fsPtr, ClientData clientData);
+MODULE_SCOPE Tcl_Obj *	TclFSNormalizeAbsolutePath(Tcl_Interp *interp,
+			    Tcl_Obj *pathPtr);
+MODULE_SCOPE int	TclFSEpoch(void);
+
+/*
+ * Private shared variables for use by tclIOUtil.c and tclPathObj.c
+ */
+
+MODULE_SCOPE Tcl_Filesystem tclNativeFilesystem;
+
+/*
+ * Private shared functions for use by tclIOUtil.c, tclPathObj.c and
+ * tclFileName.c, and any platform-specific filesystem code.
+ */
+
+MODULE_SCOPE Tcl_PathType TclFSGetPathType(Tcl_Obj *pathPtr,
+			    Tcl_Filesystem **filesystemPtrPtr,
+			    int *driveNameLengthPtr);
+MODULE_SCOPE Tcl_PathType TclFSNonnativePathType(CONST char *pathPtr,
+			    int pathLen, Tcl_Filesystem **filesystemPtrPtr,
+			    int *driveNameLengthPtr, Tcl_Obj **driveNameRef);
+MODULE_SCOPE Tcl_PathType TclGetPathType(Tcl_Obj *pathPtr,
+			    Tcl_Filesystem **filesystemPtrPtr,
+			    int *driveNameLengthPtr, Tcl_Obj **driveNameRef);
+MODULE_SCOPE int	TclFSEpochOk(int filesystemEpoch);
+MODULE_SCOPE int	TclFSCwdIsNative(void);
+MODULE_SCOPE Tcl_Obj *	TclWinVolumeRelativeNormalize(Tcl_Interp *interp,
+			    CONST char *path, Tcl_Obj **useThisCwdPtr);
+
+MODULE_SCOPE Tcl_FSPathInFilesystemProc TclNativePathInFilesystem;
+MODULE_SCOPE Tcl_FSCreateInternalRepProc TclNativeCreateNativeRep;
+
+#endif /* _TCLFILESYSTEM */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclGet.c b/generic/tclGet.c
index c16da0d..28734d1 100644
--- a/generic/tclGet.c
+++ b/generic/tclGet.c
@@ -1,21 +1,18 @@
-/* 
+/*
  * tclGet.c --
  *
- *	This file contains procedures to convert strings into
- *	other forms, like integers or floating-point numbers or
- *	booleans, doing syntax checking along the way.
+ *	This file contains functions to convert strings into other forms, like
+ *	integers or floating-point numbers or booleans, doing syntax checking
+ *	along the way.
  *
  * Copyright (c) 1990-1993 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
-#include <math.h>
-
 
 /*
  *----------------------------------------------------------------------
@@ -25,10 +22,10 @@
  *	Given a string, produce the corresponding integer value.
  *
  * Results:
- *	The return value is normally TCL_OK;  in this case *intPtr
- *	will be set to the integer value equivalent to string.  If
- *	string is improperly formed then TCL_ERROR is returned and
- *	an error message will be left in the interp's result.
+ *	The return value is normally TCL_OK; in this case *intPtr will be set
+ *	to the integer value equivalent to src.  If src is improperly formed
+ *	then TCL_ERROR is returned and an error message will be left in the
+ *	interp's result.
  *
  * Side effects:
  *	None.
@@ -37,80 +34,27 @@
  */
 
 int
-Tcl_GetInt(interp, string, intPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. */
-    CONST char *string;		/* String containing a (possibly signed)
-				 * integer in a form acceptable to strtol. */
-    int *intPtr;		/* Place to store converted result. */
+Tcl_GetInt(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. */
+    CONST char *src,		/* String containing a (possibly signed)
+				 * integer in a form acceptable to
+				 * Tcl_GetIntFromObj(). */
+    int *intPtr)		/* Place to store converted result. */
 {
-    char *end;
-    CONST char *p = string;
-    long i;
-
-    /*
-     * Note: use strtoul instead of strtol for integer conversions
-     * to allow full-size unsigned numbers, but don't depend on strtoul
-     * to handle sign characters;  it won't in some implementations.
-     */
-
-    errno = 0;
-#ifdef TCL_STRTOUL_SIGN_CHECK
-    /*
-     * This special sign check actually causes bad numbers to be allowed
-     * when strtoul.  I can't find a strtoul that doesn't validly handle
-     * signed characters, and the C standard implies that this is all
-     * unnecessary. [Bug #634856]
-     */
-    for ( ; isspace(UCHAR(*p)); p++) {	/* INTL: ISO space. */
-	/* Empty loop body. */
-    }
-    if (*p == '-') {
-	p++;
-	i = -((long)strtoul(p, &end, 0)); /* INTL: Tcl source. */
-    } else if (*p == '+') {
-	p++;
-	i = strtoul(p, &end, 0); /* INTL: Tcl source. */
-    } else
-#else
-	i = strtoul(p, &end, 0); /* INTL: Tcl source. */
-#endif
-    if (end == p) {
-	badInteger:
-        if (interp != (Tcl_Interp *) NULL) {
-	    Tcl_AppendResult(interp, "expected integer but got \"", string,
-		    "\"", (char *) NULL);
-	    TclCheckBadOctal(interp, string);
-        }
-	return TCL_ERROR;
-    }
+    Tcl_Obj obj;
+    int code;
 
-    /*
-     * The second test below is needed on platforms where "long" is
-     * larger than "int" to detect values that fit in a long but not in
-     * an int.
-     */
+    obj.refCount = 1;
+    obj.bytes = (char *) src;
+    obj.length = strlen(src);
+    obj.typePtr = NULL;
 
-    if ((errno == ERANGE) 
-#if (LONG_MAX > INT_MAX)
-	    || (i > UINT_MAX) || (i < -(long)UINT_MAX)
-#endif
-    ) {
-        if (interp != (Tcl_Interp *) NULL) {
-	    Tcl_SetResult(interp, "integer value too large to represent",
-		    TCL_STATIC);
-            Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-		    Tcl_GetStringResult(interp), (char *) NULL);
-        }
-	return TCL_ERROR;
-    }
-    while ((*end != '\0') && isspace(UCHAR(*end))) { /* INTL: ISO space. */
-	end++;
-    }
-    if (*end != 0) {
-	goto badInteger;
+    code = Tcl_GetIntFromObj(interp, &obj, intPtr);
+    if (obj.refCount > 1) {
+	Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
     }
-    *intPtr = (int) i;
-    return TCL_OK;
+    TclFreeIntRep(&obj);
+    return code;
 }
 
 /*
@@ -118,16 +62,15 @@ Tcl_GetInt(interp, string, intPtr)
  *
  * TclGetLong --
  *
- *	Given a string, produce the corresponding long integer value.
- *	This routine is a version of Tcl_GetInt but returns a "long"
- *	instead of an "int".
+ *	Given a string, produce the corresponding long integer value. This
+ *	routine is a version of Tcl_GetInt but returns a "long" instead of an
+ *	"int" (a difference that matters on 64-bit architectures).
  *
  * Results:
- *	The return value is normally TCL_OK; in this case *longPtr
- *	will be set to the long integer value equivalent to string. If
- *	string is improperly formed then TCL_ERROR is returned and
- *	an error message will be left in the interp's result if interp
- *	is non-NULL. 
+ *	The return value is normally TCL_OK; in this case *longPtr will be set
+ *	to the long integer value equivalent to src. If src is improperly
+ *	formed then TCL_ERROR is returned and an error message will be left in
+ *	the interp's result if interp is non-NULL.
  *
  * Side effects:
  *	None.
@@ -136,64 +79,28 @@ Tcl_GetInt(interp, string, intPtr)
  */
 
 int
-TclGetLong(interp, string, longPtr)
-    Tcl_Interp *interp;		/* Interpreter used for error reporting
-				 * if not NULL. */
-    CONST char *string;		/* String containing a (possibly signed)
-				 * long integer in a form acceptable to
-				 * strtoul. */
-    long *longPtr;		/* Place to store converted long result. */
+TclGetLong(
+    Tcl_Interp *interp,		/* Interpreter used for error reporting if not
+				 * NULL. */
+    CONST char *src,		/* String containing a (possibly signed) long
+				 * integer in a form acceptable to
+				 * Tcl_GetLongFromObj(). */
+    long *longPtr)		/* Place to store converted long result. */
 {
-    char *end;
-    CONST char *p = string;
-    long i;
+    Tcl_Obj obj;
+    int code;
 
-    /*
-     * Note: don't depend on strtoul to handle sign characters; it won't
-     * in some implementations.
-     */
+    obj.refCount = 1;
+    obj.bytes = (char *) src;
+    obj.length = strlen(src);
+    obj.typePtr = NULL;
 
-    errno = 0;
-#ifdef TCL_STRTOUL_SIGN_CHECK
-    for ( ; isspace(UCHAR(*p)); p++) {	/* INTL: ISO space. */
-	/* Empty loop body. */
-    }
-    if (*p == '-') {
-	p++;
-	i = -(int)strtoul(p, &end, 0); /* INTL: Tcl source. */
-    } else if (*p == '+') {
-	p++;
-	i = strtoul(p, &end, 0); /* INTL: Tcl source. */
-    } else
-#else
-	i = strtoul(p, &end, 0); /* INTL: Tcl source. */
-#endif
-    if (end == p) {
-	badInteger:
-        if (interp != (Tcl_Interp *) NULL) {
-	    Tcl_AppendResult(interp, "expected integer but got \"", string,
-		    "\"", (char *) NULL);
-	    TclCheckBadOctal(interp, string);
-        }
-	return TCL_ERROR;
-    }
-    if (errno == ERANGE) {
-        if (interp != (Tcl_Interp *) NULL) {
-	    Tcl_SetResult(interp, "integer value too large to represent",
-		    TCL_STATIC);
-            Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
-                    Tcl_GetStringResult(interp), (char *) NULL);
-        }
-	return TCL_ERROR;
+    code = Tcl_GetLongFromObj(interp, &obj, longPtr);
+    if (obj.refCount > 1) {
+	Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
     }
-    while ((*end != '\0') && isspace(UCHAR(*end))) { /* INTL: ISO space. */
-	end++;
-    }
-    if (*end != 0) {
-	goto badInteger;
-    }
-    *longPtr = i;
-    return TCL_OK;
+    TclFreeIntRep(&obj);
+    return code;
 }
 
 /*
@@ -205,10 +112,10 @@ TclGetLong(interp, string, longPtr)
  *	floating-point value.
  *
  * Results:
- *	The return value is normally TCL_OK; in this case *doublePtr
- *	will be set to the double-precision value equivalent to string.
- *	If string is improperly formed then TCL_ERROR is returned and
- *	an error message will be left in the interp's result.
+ *	The return value is normally TCL_OK; in this case *doublePtr will be
+ *	set to the double-precision value equivalent to src. If src is
+ *	improperly formed then TCL_ERROR is returned and an error message will
+ *	be left in the interp's result.
  *
  * Side effects:
  *	None.
@@ -217,40 +124,27 @@ TclGetLong(interp, string, longPtr)
  */
 
 int
-Tcl_GetDouble(interp, string, doublePtr)
-    Tcl_Interp *interp;		/* Interpreter used for error reporting. */
-    CONST char *string;		/* String containing a floating-point number
-				 * in a form acceptable to strtod. */
-    double *doublePtr;		/* Place to store converted result. */
+Tcl_GetDouble(
+    Tcl_Interp *interp,		/* Interpreter used for error reporting. */
+    CONST char *src,		/* String containing a floating-point number
+				 * in a form acceptable to 
+				 * Tcl_GetDoubleFromObj(). */
+    double *doublePtr)		/* Place to store converted result. */
 {
-    char *end;
-    double d;
+    Tcl_Obj obj;
+    int code;
 
-    errno = 0;
-    d = strtod(string, &end); /* INTL: Tcl source. */
-    if (end == string) {
-	badDouble:
-        if (interp != (Tcl_Interp *) NULL) {
-            Tcl_AppendResult(interp,
-                    "expected floating-point number but got \"",
-                    string, "\"", (char *) NULL);
-        }
-	return TCL_ERROR;
-    }
-    if (errno != 0 && (d == HUGE_VAL || d == -HUGE_VAL || d == 0)) {
-        if (interp != (Tcl_Interp *) NULL) {
-            TclExprFloatError(interp, d); 
-        }
-	return TCL_ERROR;
-    }
-    while ((*end != 0) && isspace(UCHAR(*end))) { /* INTL: ISO space. */
-	end++;
-    }
-    if (*end != 0) {
-	goto badDouble;
+    obj.refCount = 1;
+    obj.bytes = (char *) src;
+    obj.length = strlen(src);
+    obj.typePtr = NULL;
+
+    code = Tcl_GetDoubleFromObj(interp, &obj, doublePtr);
+    if (obj.refCount > 1) {
+	Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
     }
-    *doublePtr = d;
-    return TCL_OK;
+    TclFreeIntRep(&obj);
+    return code;
 }
 
 /*
@@ -258,14 +152,14 @@ Tcl_GetDouble(interp, string, doublePtr)
  *
  * Tcl_GetBoolean --
  *
- *	Given a string, return a 0/1 boolean value corresponding
- *	to the string.
+ *	Given a string, return a 0/1 boolean value corresponding to the
+ *	string.
  *
  * Results:
- *	The return value is normally TCL_OK;  in this case *boolPtr
- *	will be set to the 0/1 value equivalent to string.  If
- *	string is improperly formed then TCL_ERROR is returned and
- *	an error message will be left in the interp's result.
+ *	The return value is normally TCL_OK; in this case *boolPtr will be set
+ *	to the 0/1 value equivalent to src. If src is improperly formed then
+ *	TCL_ERROR is returned and an error message will be left in the
+ *	interp's result.
  *
  * Side effects:
  *	None.
@@ -274,64 +168,35 @@ Tcl_GetDouble(interp, string, doublePtr)
  */
 
 int
-Tcl_GetBoolean(interp, string, boolPtr)
-    Tcl_Interp *interp;		/* Interpreter used for error reporting. */
-    CONST char *string;		/* String containing a boolean number
-				 * specified either as 1/0 or true/false or
-				 * yes/no. */
-    int *boolPtr;		/* Place to store converted result, which
-				 * will be 0 or 1. */
+Tcl_GetBoolean(
+    Tcl_Interp *interp,		/* Interpreter used for error reporting. */
+    CONST char *src,		/* String containing one of the boolean values
+				 * 1, 0, true, false, yes, no, on off. */
+    int *boolPtr)		/* Place to store converted result, which will
+				 * be 0 or 1. */
 {
-    int i;
-    char lowerCase[10], c;
-    size_t length;
+    Tcl_Obj obj;
+    int code;
 
-    /*
-     * Convert the input string to all lower-case. 
-     * INTL: This code will work on UTF strings.
-     */
+    obj.refCount = 1;
+    obj.bytes = (char *) src;
+    obj.length = strlen(src);
+    obj.typePtr = NULL;
 
-    for (i = 0; i < 9; i++) {
-	c = string[i];
-	if (c == 0) {
-	    break;
-	}
-	if ((c >= 'A') && (c <= 'Z')) {
-	    c += (char) ('a' - 'A');
-	}
-	lowerCase[i] = c;
+    code = Tcl_ConvertToType(interp, &obj, &tclBooleanType);
+    if (obj.refCount > 1) {
+	Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
     }
-    lowerCase[i] = 0;
-
-    length = strlen(lowerCase);
-    c = lowerCase[0];
-    if ((c == '0') && (lowerCase[1] == '\0')) {
-	*boolPtr = 0;
-    } else if ((c == '1') && (lowerCase[1] == '\0')) {
-	*boolPtr = 1;
-    } else if ((c == 'y') && (strncmp(lowerCase, "yes", length) == 0)) {
-	*boolPtr = 1;
-    } else if ((c == 'n') && (strncmp(lowerCase, "no", length) == 0)) {
-	*boolPtr = 0;
-    } else if ((c == 't') && (strncmp(lowerCase, "true", length) == 0)) {
-	*boolPtr = 1;
-    } else if ((c == 'f') && (strncmp(lowerCase, "false", length) == 0)) {
-	*boolPtr = 0;
-    } else if ((c == 'o') && (length >= 2)) {
-	if (strncmp(lowerCase, "on", length) == 0) {
-	    *boolPtr = 1;
-	} else if (strncmp(lowerCase, "off", length) == 0) {
-	    *boolPtr = 0;
-	} else {
-	    goto badBoolean;
-	}
-    } else {
-	badBoolean:
-        if (interp != (Tcl_Interp *) NULL) {
-            Tcl_AppendResult(interp, "expected boolean value but got \"",
-                    string, "\"", (char *) NULL);
-        }
-	return TCL_ERROR;
+    if (code == TCL_OK) {
+	*boolPtr = obj.internalRep.longValue;
     }
-    return TCL_OK;
+    return code;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclGetDate.y b/generic/tclGetDate.y
index 52a5052..551b1ed 100644
--- a/generic/tclGetDate.y
+++ b/generic/tclGetDate.y
@@ -1,331 +1,409 @@
-/* 
+/*
  * tclGetDate.y --
  *
- *	Contains yacc grammar for parsing date and time strings.
- *	The output of this file should be the file tclDate.c which
- *	is used directly in the Tcl sources.
+ *	Contains yacc grammar for parsing date and time strings. The output of
+ *	this file should be the file tclDate.c which is used directly in the
+ *	Tcl sources. Note that this file is largely obsolete in Tcl 8.5; it is
+ *	only used when doing free-form date parsing, an ill-defined process
+ *	anyway.
  *
  * Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans.
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
+%parse-param {DateInfo* info}
+%lex-param {DateInfo* info}
+%pure-parser
+ /* %error-verbose would be nice, but our token names are meaningless */
+%locations
+
 %{
-/* 
+/*
  * tclDate.c --
  *
- *	This file is generated from a yacc grammar defined in
- *	the file tclGetDate.y.  It should not be edited directly.
+ *	This file is generated from a yacc grammar defined in the file
+ *	tclGetDate.y. It should not be edited directly.
  *
  * Copyright (c) 1992-1995 Karl Lehenbauer and Mark Diekhans.
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * SCCSID
  */
-
 #include "tclInt.h"
-#include "tclPort.h"
 
-#define EPOCH           1970
-#define START_OF_TIME   1902
-#define END_OF_TIME     2037
+/*
+ * Bison generates several labels that happen to be unused. MS Visual C++
+ * doesn't like that, and complains. Tell it to shut up.
+ */
+
+#ifdef _MSC_VER
+#pragma warning( disable : 4102 )
+#endif /* _MSC_VER */
+
+/*
+ * yyparse will accept a 'struct DateInfo' as its parameter; that's where the
+ * parsed fields will be returned.
+ */
+
+typedef struct DateInfo {
+
+    Tcl_Obj* messages;		/* Error messages */
+    const char* separatrix;	/* String separating messages */
+
+    time_t dateYear;
+    time_t dateMonth;
+    time_t dateDay;
+    int dateHaveDate;
+
+    time_t dateHour;
+    time_t dateMinutes;
+    time_t dateSeconds;
+    int dateMeridian;
+    int dateHaveTime;
+
+    time_t dateTimezone;
+    int dateDSTmode;
+    int dateHaveZone;
+
+    time_t dateRelMonth;
+    time_t dateRelDay;
+    time_t dateRelSeconds;
+    int dateHaveRel;
+
+    time_t dateMonthOrdinal;
+    int dateHaveOrdinalMonth;
+
+    time_t dateDayOrdinal;
+    time_t dateDayNumber;
+    int dateHaveDay;
+
+    const char *dateStart;
+    const char *dateInput;
+    time_t *dateRelPointer;
+
+    int dateDigitCount;
+} DateInfo;
+
+#define YYMALLOC	ckalloc
+#define YYFREE(x)	(ckfree((void*) (x)))
+
+#define yyDSTmode	(info->dateDSTmode)
+#define yyDayOrdinal	(info->dateDayOrdinal)
+#define yyDayNumber	(info->dateDayNumber)
+#define yyMonthOrdinal	(info->dateMonthOrdinal)
+#define yyHaveDate	(info->dateHaveDate)
+#define yyHaveDay	(info->dateHaveDay)
+#define yyHaveOrdinalMonth (info->dateHaveOrdinalMonth)
+#define yyHaveRel	(info->dateHaveRel)
+#define yyHaveTime	(info->dateHaveTime)
+#define yyHaveZone	(info->dateHaveZone)
+#define yyTimezone	(info->dateTimezone)
+#define yyDay		(info->dateDay)
+#define yyMonth		(info->dateMonth)
+#define yyYear		(info->dateYear)
+#define yyHour		(info->dateHour)
+#define yyMinutes	(info->dateMinutes)
+#define yySeconds	(info->dateSeconds)
+#define yyMeridian	(info->dateMeridian)
+#define yyRelMonth	(info->dateRelMonth)
+#define yyRelDay	(info->dateRelDay)
+#define yyRelSeconds	(info->dateRelSeconds)
+#define yyRelPointer	(info->dateRelPointer)
+#define yyInput		(info->dateInput)
+#define yyDigitCount	(info->dateDigitCount)
+
+#define EPOCH		1970
+#define START_OF_TIME	1902
+#define END_OF_TIME	2037
 
 /*
  * The offset of tm_year of struct tm returned by localtime, gmtime, etc.
- * I don't know how universal this is; K&R II, the NetBSD manpages, and
- * ../compat/strftime.c all agree that tm_year is the year-1900.  However,
- * some systems may have a different value.  This #define should be the
- * same as in ../compat/strftime.c.
+ * Posix requires 1900.
  */
-#define TM_YEAR_BASE 1900
 
-#define HOUR(x)         ((int) (60 * x))
-#define SECSPERDAY      (24L * 60L * 60L)
-#define IsLeapYear(x)   ((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0))
+#define TM_YEAR_BASE	1900
+
+#define HOUR(x)		((int) (60 * x))
+#define SECSPERDAY	(24L * 60L * 60L)
+#define IsLeapYear(x)	((x % 4 == 0) && (x % 100 != 0 || x % 400 == 0))
 
 /*
- *  An entry in the lexical lookup table.
+ * An entry in the lexical lookup table.
  */
+
 typedef struct _TABLE {
-    char        *name;
-    int         type;
-    time_t      value;
+    const char *name;
+    int type;
+    time_t value;
 } TABLE;
 
-
 /*
- *  Daylight-savings mode:  on, off, or not yet known.
+ * Daylight-savings mode: on, off, or not yet known.
  */
+
 typedef enum _DSTMODE {
     DSTon, DSToff, DSTmaybe
 } DSTMODE;
 
 /*
- *  Meridian:  am, pm, or 24-hour style.
+ * Meridian: am, pm, or 24-hour style.
  */
+
 typedef enum _MERIDIAN {
     MERam, MERpm, MER24
 } MERIDIAN;
 
+%}
 
-/*
- *  Global variables.  We could get rid of most of these by using a good
- *  union as the yacc stack.  (This routine was originally written before
- *  yacc had the %union construct.)  Maybe someday; right now we only use
- *  the %union very rarely.
- */
-static char     *yyInput;
-static DSTMODE  yyDSTmode;
-static time_t   yyDayOrdinal;
-static time_t   yyDayNumber;
-static time_t   yyMonthOrdinal;
-static int      yyHaveDate;
-static int      yyHaveDay;
-static int      yyHaveOrdinalMonth;
-static int      yyHaveRel;
-static int      yyHaveTime;
-static int      yyHaveZone;
-static time_t   yyTimezone;
-static time_t   yyDay;
-static time_t   yyHour;
-static time_t   yyMinutes;
-static time_t   yyMonth;
-static time_t   yySeconds;
-static time_t   yyYear;
-static MERIDIAN yyMeridian;
-static time_t   yyRelMonth;
-static time_t   yyRelDay;
-static time_t   yyRelSeconds;
-static time_t  *yyRelPointer;
+%union {
+    time_t Number;
+    enum _MERIDIAN Meridian;
+}
+
+%{
 
 /*
  * Prototypes of internal functions.
  */
-static void	yyerror _ANSI_ARGS_((char *s));
-static time_t	ToSeconds _ANSI_ARGS_((time_t Hours, time_t Minutes,
-		    time_t Seconds, MERIDIAN Meridian));
-static int	Convert _ANSI_ARGS_((time_t Month, time_t Day, time_t Year,
-		    time_t Hours, time_t Minutes, time_t Seconds,
-		    MERIDIAN Meridia, DSTMODE DSTmode, time_t *TimePtr));
-static time_t	DSTcorrect _ANSI_ARGS_((time_t Start, time_t Future));
-static time_t	NamedDay _ANSI_ARGS_((time_t Start, time_t DayOrdinal,
-		    time_t DayNumber));
-static time_t   NamedMonth _ANSI_ARGS_((time_t Start, time_t MonthOrdinal,
-                    time_t MonthNumber));
-static int	RelativeMonth _ANSI_ARGS_((time_t Start, time_t RelMonth,
-		    time_t *TimePtr));
-static int	RelativeDay _ANSI_ARGS_((time_t Start, time_t RelDay,
-		    time_t *TimePtr));
-static int	LookupWord _ANSI_ARGS_((char *buff));
-static int	yylex _ANSI_ARGS_((void));
 
-int
-yyparse _ANSI_ARGS_((void));
+static int		LookupWord(YYSTYPE* yylvalPtr, char *buff);
+ static void		TclDateerror(YYLTYPE* location,
+				     DateInfo* info, const char *s);
+ static int		TclDatelex(YYSTYPE* yylvalPtr, YYLTYPE* location,
+				   DateInfo* info);
+static time_t		ToSeconds(time_t Hours, time_t Minutes,
+			    time_t Seconds, MERIDIAN Meridian);
+MODULE_SCOPE int	yyparse(DateInfo*);
+
 %}
 
-%union {
-    time_t              Number;
-    enum _MERIDIAN      Meridian;
-}
-
-%token  tAGO tDAY tDAYZONE tID tMERIDIAN tMINUTE_UNIT tMONTH tMONTH_UNIT
-%token  tSTARDATE tSEC_UNIT tSNUMBER tUNUMBER tZONE tEPOCH tDST tISOBASE
-%token  tDAY_UNIT tNEXT
-
-%type   <Number>        tDAY tDAYZONE tMINUTE_UNIT tMONTH tMONTH_UNIT tDST
-%type   <Number>        tSEC_UNIT tSNUMBER tUNUMBER tZONE tISOBASE tDAY_UNIT
-%type   <Number>        unit sign tNEXT tSTARDATE
-%type   <Meridian>      tMERIDIAN o_merid
+%token	tAGO
+%token	tDAY
+%token	tDAYZONE
+%token	tID
+%token	tMERIDIAN
+%token	tMONTH
+%token	tMONTH_UNIT
+%token	tSTARDATE
+%token	tSEC_UNIT
+%token	tSNUMBER
+%token	tUNUMBER
+%token	tZONE
+%token	tEPOCH
+%token	tDST
+%token	tISOBASE
+%token	tDAY_UNIT
+%token	tNEXT
+
+%type	<Number>	tDAY
+%type	<Number>	tDAYZONE
+%type	<Number>	tMONTH
+%type	<Number>	tMONTH_UNIT
+%type	<Number>	tDST
+%type	<Number>	tSEC_UNIT
+%type	<Number>	tSNUMBER
+%type	<Number>	tUNUMBER
+%type	<Number>	tZONE
+%type	<Number>	tISOBASE
+%type	<Number>	tDAY_UNIT
+%type	<Number>	unit
+%type	<Number>	sign
+%type	<Number>	tNEXT
+%type	<Number>	tSTARDATE
+%type	<Meridian>	tMERIDIAN
+%type	<Meridian>	o_merid
 
 %%
 
-spec    : /* NULL */
-        | spec item
-        ;
-
-item    : time {
-            yyHaveTime++;
-        }
-        | zone {
-            yyHaveZone++;
-        }
-        | date {
-            yyHaveDate++;
-        }
-        | ordMonth {
-            yyHaveOrdinalMonth++;
-        }
-        | day {
-            yyHaveDay++;
-        }
-        | relspec {
-            yyHaveRel++;
-        }
-        | iso {
+spec	: /* NULL */
+	| spec item
+	;
+
+item	: time {
+	    yyHaveTime++;
+	}
+	| zone {
+	    yyHaveZone++;
+	}
+	| date {
+	    yyHaveDate++;
+	}
+	| ordMonth {
+	    yyHaveOrdinalMonth++;
+	}
+	| day {
+	    yyHaveDay++;
+	}
+	| relspec {
+	    yyHaveRel++;
+	}
+	| iso {
 	    yyHaveTime++;
 	    yyHaveDate++;
 	}
-        | trek {
+	| trek {
 	    yyHaveTime++;
 	    yyHaveDate++;
 	    yyHaveRel++;
-        }
-        | number
-        ;
-
-time    : tUNUMBER tMERIDIAN {
-            yyHour = $1;
-            yyMinutes = 0;
-            yySeconds = 0;
-            yyMeridian = $2;
-        }
-        | tUNUMBER ':' tUNUMBER o_merid {
-            yyHour = $1;
-            yyMinutes = $3;
-            yySeconds = 0;
-            yyMeridian = $4;
-        }
-        | tUNUMBER ':' tUNUMBER '-' tUNUMBER {
-            yyHour = $1;
-            yyMinutes = $3;
-            yyMeridian = MER24;
-            yyDSTmode = DSToff;
-            yyTimezone = ($5 % 100 + ($5 / 100) * 60);
-        }
-        | tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid {
-            yyHour = $1;
-            yyMinutes = $3;
-            yySeconds = $5;
-            yyMeridian = $6;
-        }
-        | tUNUMBER ':' tUNUMBER ':' tUNUMBER '-' tUNUMBER {
-            yyHour = $1;
-            yyMinutes = $3;
-            yySeconds = $5;
-            yyMeridian = MER24;
-            yyDSTmode = DSToff;
-            yyTimezone = ($7 % 100 + ($7 / 100) * 60);
-        }
-        ;
-
-zone    : tZONE tDST {
-            yyTimezone = $1;
-            yyDSTmode = DSTon;
-        }
-        | tZONE {
-            yyTimezone = $1;
-            yyDSTmode = DSToff;
-        }
-        | tDAYZONE {
-            yyTimezone = $1;
-            yyDSTmode = DSTon;
-        }
-        ;
-
-day     : tDAY {
-            yyDayOrdinal = 1;
-            yyDayNumber = $1;
-        }
-        | tDAY ',' {
-            yyDayOrdinal = 1;
-            yyDayNumber = $1;
-        }
-        | tUNUMBER tDAY {
-            yyDayOrdinal = $1;
-            yyDayNumber = $2;
-        }
-        | sign tUNUMBER tDAY {
-            yyDayOrdinal = $1 * $2;
-            yyDayNumber = $3;
-        }
-        | tNEXT tDAY {
-            yyDayOrdinal = 2;
-            yyDayNumber = $2;
-        }
-        ;
-
-date    : tUNUMBER '/' tUNUMBER {
-            yyMonth = $1;
-            yyDay = $3;
-        }
-        | tUNUMBER '/' tUNUMBER '/' tUNUMBER {
-            yyMonth = $1;
-            yyDay = $3;
-            yyYear = $5;
-        }
-        | tISOBASE {
+	}
+	| number
+	;
+
+time	: tUNUMBER tMERIDIAN {
+	    yyHour = $1;
+	    yyMinutes = 0;
+	    yySeconds = 0;
+	    yyMeridian = $2;
+	}
+	| tUNUMBER ':' tUNUMBER o_merid {
+	    yyHour = $1;
+	    yyMinutes = $3;
+	    yySeconds = 0;
+	    yyMeridian = $4;
+	}
+	| tUNUMBER ':' tUNUMBER '-' tUNUMBER {
+	    yyHour = $1;
+	    yyMinutes = $3;
+	    yyMeridian = MER24;
+	    yyDSTmode = DSToff;
+	    yyTimezone = ($5 % 100 + ($5 / 100) * 60);
+	    ++yyHaveZone;
+	}
+	| tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid {
+	    yyHour = $1;
+	    yyMinutes = $3;
+	    yySeconds = $5;
+	    yyMeridian = $6;
+	}
+	| tUNUMBER ':' tUNUMBER ':' tUNUMBER '-' tUNUMBER {
+	    yyHour = $1;
+	    yyMinutes = $3;
+	    yySeconds = $5;
+	    yyMeridian = MER24;
+	    yyDSTmode = DSToff;
+	    yyTimezone = ($7 % 100 + ($7 / 100) * 60);
+	    ++yyHaveZone;
+	}
+	;
+
+zone	: tZONE tDST {
+	    yyTimezone = $1;
+	    yyDSTmode = DSTon;
+	}
+	| tZONE {
+	    yyTimezone = $1;
+	    yyDSTmode = DSToff;
+	}
+	| tDAYZONE {
+	    yyTimezone = $1;
+	    yyDSTmode = DSTon;
+	}
+	;
+
+day	: tDAY {
+	    yyDayOrdinal = 1;
+	    yyDayNumber = $1;
+	}
+	| tDAY ',' {
+	    yyDayOrdinal = 1;
+	    yyDayNumber = $1;
+	}
+	| tUNUMBER tDAY {
+	    yyDayOrdinal = $1;
+	    yyDayNumber = $2;
+	}
+	| sign tUNUMBER tDAY {
+	    yyDayOrdinal = $1 * $2;
+	    yyDayNumber = $3;
+	}
+	| tNEXT tDAY {
+	    yyDayOrdinal = 2;
+	    yyDayNumber = $2;
+	}
+	;
+
+date	: tUNUMBER '/' tUNUMBER {
+	    yyMonth = $1;
+	    yyDay = $3;
+	}
+	| tUNUMBER '/' tUNUMBER '/' tUNUMBER {
+	    yyMonth = $1;
+	    yyDay = $3;
+	    yyYear = $5;
+	}
+	| tISOBASE {
 	    yyYear = $1 / 10000;
 	    yyMonth = ($1 % 10000)/100;
 	    yyDay = $1 % 100;
 	}
-        | tUNUMBER '-' tMONTH '-' tUNUMBER {
+	| tUNUMBER '-' tMONTH '-' tUNUMBER {
 	    yyDay = $1;
 	    yyMonth = $3;
 	    yyYear = $5;
 	}
-        | tUNUMBER '-' tUNUMBER '-' tUNUMBER {
-            yyMonth = $3;
-            yyDay = $5;
-            yyYear = $1;
-        }
-        | tMONTH tUNUMBER {
-            yyMonth = $1;
-            yyDay = $2;
-        }
-        | tMONTH tUNUMBER ',' tUNUMBER {
-            yyMonth = $1;
-            yyDay = $2;
-            yyYear = $4;
-        }
-        | tUNUMBER tMONTH {
-            yyMonth = $2;
-            yyDay = $1;
-        }
-        | tEPOCH {
+	| tUNUMBER '-' tUNUMBER '-' tUNUMBER {
+	    yyMonth = $3;
+	    yyDay = $5;
+	    yyYear = $1;
+	}
+	| tMONTH tUNUMBER {
+	    yyMonth = $1;
+	    yyDay = $2;
+	}
+	| tMONTH tUNUMBER ',' tUNUMBER {
+	    yyMonth = $1;
+	    yyDay = $2;
+	    yyYear = $4;
+	}
+	| tUNUMBER tMONTH {
+	    yyMonth = $2;
+	    yyDay = $1;
+	}
+	| tEPOCH {
 	    yyMonth = 1;
 	    yyDay = 1;
 	    yyYear = EPOCH;
 	}
-        | tUNUMBER tMONTH tUNUMBER {
-            yyMonth = $2;
-            yyDay = $1;
-            yyYear = $3;
-        }
-        ;
+	| tUNUMBER tMONTH tUNUMBER {
+	    yyMonth = $2;
+	    yyDay = $1;
+	    yyYear = $3;
+	}
+	;
 
 ordMonth: tNEXT tMONTH {
 	    yyMonthOrdinal = 1;
 	    yyMonth = $2;
 	}
-        | tNEXT tUNUMBER tMONTH {
+	| tNEXT tUNUMBER tMONTH {
 	    yyMonthOrdinal = $2;
 	    yyMonth = $3;
 	}
-        ;
+	;
 
-iso     : tISOBASE tZONE tISOBASE {
-            if ($2 != HOUR(- 7)) YYABORT;
+iso	: tISOBASE tZONE tISOBASE {
+	    if ($2 != HOUR( 7)) YYABORT;
 	    yyYear = $1 / 10000;
 	    yyMonth = ($1 % 10000)/100;
 	    yyDay = $1 % 100;
 	    yyHour = $3 / 10000;
 	    yyMinutes = ($3 % 10000)/100;
 	    yySeconds = $3 % 100;
-        }
-        | tISOBASE tZONE tUNUMBER ':' tUNUMBER ':' tUNUMBER {
-            if ($2 != HOUR(- 7)) YYABORT;
+	}
+	| tISOBASE tZONE tUNUMBER ':' tUNUMBER ':' tUNUMBER {
+	    if ($2 != HOUR( 7)) YYABORT;
 	    yyYear = $1 / 10000;
 	    yyMonth = ($1 % 10000)/100;
 	    yyDay = $1 % 100;
 	    yyHour = $3;
 	    yyMinutes = $5;
 	    yySeconds = $7;
-        }
+	}
 	| tISOBASE tISOBASE {
 	    yyYear = $1 / 10000;
 	    yyMonth = ($1 % 10000)/100;
@@ -333,21 +411,22 @@ iso     : tISOBASE tZONE tISOBASE {
 	    yyHour = $2 / 10000;
 	    yyMinutes = ($2 % 10000)/100;
 	    yySeconds = $2 % 100;
-        }
-        ;
+	}
+	;
 
-trek    : tSTARDATE tUNUMBER '.' tUNUMBER {
-            /*
-	     * Offset computed year by -377 so that the returned years will
-	     * be in a range accessible with a 32 bit clock seconds value
+trek	: tSTARDATE tUNUMBER '.' tUNUMBER {
+	    /*
+	     * Offset computed year by -377 so that the returned years will be
+	     * in a range accessible with a 32 bit clock seconds value.
 	     */
-            yyYear = $2/1000 + 2323 - 377;
-            yyDay  = 1;
+
+	    yyYear = $2/1000 + 2323 - 377;
+	    yyDay  = 1;
 	    yyMonth = 1;
 	    yyRelDay += (($2%1000)*(365 + IsLeapYear(yyYear)))/1000;
 	    yyRelSeconds += $4 * 144 * 60;
-        }
-        ;
+	}
+	;
 
 relspec : relunits tAGO {
 	    yyRelSeconds *= -1;
@@ -356,209 +435,241 @@ relspec : relunits tAGO {
 	}
 	| relunits
 	;
-relunits : sign tUNUMBER unit  { *yyRelPointer += $1 * $2 * $3; }
-        | tUNUMBER unit        { *yyRelPointer += $1 * $2; }
-        | tNEXT unit           { *yyRelPointer += $2; }
-        | tNEXT tUNUMBER unit  { *yyRelPointer += $2 * $3; }
-        | unit                 { *yyRelPointer += $1; }
-        ;
-sign    : '-'            { $$ = -1; }
-        | '+'            { $$ =  1; }
-        ;
-unit    : tSEC_UNIT      { $$ = $1; yyRelPointer = &yyRelSeconds; }
-        | tDAY_UNIT      { $$ = $1; yyRelPointer = &yyRelDay; }
-        | tMONTH_UNIT    { $$ = $1; yyRelPointer = &yyRelMonth; }
-        ;
-
-number  : tUNUMBER
-    {
-	if (yyHaveTime && yyHaveDate && !yyHaveRel) {
-	    yyYear = $1;
-	} else {
-	    yyHaveTime++;
-	    if ($1 < 100) {
-		yyHour = $1;
-		yyMinutes = 0;
+
+relunits : sign tUNUMBER unit {
+	    *yyRelPointer += $1 * $2 * $3;
+	}
+	| tUNUMBER unit {
+	    *yyRelPointer += $1 * $2;
+	}
+	| tNEXT unit {
+	    *yyRelPointer += $2;
+	}
+	| tNEXT tUNUMBER unit {
+	    *yyRelPointer += $2 * $3;
+	}
+	| unit {
+	    *yyRelPointer += $1;
+	}
+	;
+
+sign	: '-' {
+	    $$ = -1;
+	}
+	| '+' {
+	    $$ =  1;
+	}
+	;
+
+unit	: tSEC_UNIT {
+	    $$ = $1;
+	    yyRelPointer = &yyRelSeconds;
+	}
+	| tDAY_UNIT {
+	    $$ = $1;
+	    yyRelPointer = &yyRelDay;
+	}
+	| tMONTH_UNIT {
+	    $$ = $1;
+	    yyRelPointer = &yyRelMonth;
+	}
+	;
+
+number	: tUNUMBER {
+	    if (yyHaveTime && yyHaveDate && !yyHaveRel) {
+		yyYear = $1;
 	    } else {
-		yyHour = $1 / 100;
-		yyMinutes = $1 % 100;
+		yyHaveTime++;
+		if (yyDigitCount <= 2) {
+		    yyHour = $1;
+		    yyMinutes = 0;
+		} else {
+		    yyHour = $1 / 100;
+		    yyMinutes = $1 % 100;
+		}
+		yySeconds = 0;
+		yyMeridian = MER24;
 	    }
-	    yySeconds = 0;
-	    yyMeridian = MER24;
 	}
-    }
-;
+	;
 
 o_merid : /* NULL */ {
-            $$ = MER24;
-        }
-        | tMERIDIAN {
-            $$ = $1;
-        }
-        ;
+	    $$ = MER24;
+	}
+	| tMERIDIAN {
+	    $$ = $1;
+	}
+	;
 
 %%
+MODULE_SCOPE int yychar;
+MODULE_SCOPE YYSTYPE yylval;
+MODULE_SCOPE int yynerrs;
 
 /*
  * Month and day table.
  */
-static CONST TABLE MonthDayTable[] = {
-    { "january",        tMONTH,  1 },
-    { "february",       tMONTH,  2 },
-    { "march",          tMONTH,  3 },
-    { "april",          tMONTH,  4 },
-    { "may",            tMONTH,  5 },
-    { "june",           tMONTH,  6 },
-    { "july",           tMONTH,  7 },
-    { "august",         tMONTH,  8 },
-    { "september",      tMONTH,  9 },
-    { "sept",           tMONTH,  9 },
-    { "october",        tMONTH, 10 },
-    { "november",       tMONTH, 11 },
-    { "december",       tMONTH, 12 },
-    { "sunday",         tDAY, 0 },
-    { "monday",         tDAY, 1 },
-    { "tuesday",        tDAY, 2 },
-    { "tues",           tDAY, 2 },
-    { "wednesday",      tDAY, 3 },
-    { "wednes",         tDAY, 3 },
-    { "thursday",       tDAY, 4 },
-    { "thur",           tDAY, 4 },
-    { "thurs",          tDAY, 4 },
-    { "friday",         tDAY, 5 },
-    { "saturday",       tDAY, 6 },
+
+static const TABLE MonthDayTable[] = {
+    { "january",	tMONTH,	 1 },
+    { "february",	tMONTH,	 2 },
+    { "march",		tMONTH,	 3 },
+    { "april",		tMONTH,	 4 },
+    { "may",		tMONTH,	 5 },
+    { "june",		tMONTH,	 6 },
+    { "july",		tMONTH,	 7 },
+    { "august",		tMONTH,	 8 },
+    { "september",	tMONTH,	 9 },
+    { "sept",		tMONTH,	 9 },
+    { "october",	tMONTH, 10 },
+    { "november",	tMONTH, 11 },
+    { "december",	tMONTH, 12 },
+    { "sunday",		tDAY, 0 },
+    { "monday",		tDAY, 1 },
+    { "tuesday",	tDAY, 2 },
+    { "tues",		tDAY, 2 },
+    { "wednesday",	tDAY, 3 },
+    { "wednes",		tDAY, 3 },
+    { "thursday",	tDAY, 4 },
+    { "thur",		tDAY, 4 },
+    { "thurs",		tDAY, 4 },
+    { "friday",		tDAY, 5 },
+    { "saturday",	tDAY, 6 },
     { NULL }
 };
 
 /*
  * Time units table.
  */
-static CONST TABLE UnitsTable[] = {
-    { "year",           tMONTH_UNIT,    12 },
-    { "month",          tMONTH_UNIT,     1 },
-    { "fortnight",      tDAY_UNIT,      14 },
-    { "week",           tDAY_UNIT,       7 },
-    { "day",            tDAY_UNIT,       1 },
-    { "hour",           tSEC_UNIT, 60 * 60 },
-    { "minute",         tSEC_UNIT,      60 },
-    { "min",            tSEC_UNIT,      60 },
-    { "second",         tSEC_UNIT,       1 },
-    { "sec",            tSEC_UNIT,       1 },
+
+static const TABLE UnitsTable[] = {
+    { "year",		tMONTH_UNIT,	12 },
+    { "month",		tMONTH_UNIT,	 1 },
+    { "fortnight",	tDAY_UNIT,	14 },
+    { "week",		tDAY_UNIT,	 7 },
+    { "day",		tDAY_UNIT,	 1 },
+    { "hour",		tSEC_UNIT, 60 * 60 },
+    { "minute",		tSEC_UNIT,	60 },
+    { "min",		tSEC_UNIT,	60 },
+    { "second",		tSEC_UNIT,	 1 },
+    { "sec",		tSEC_UNIT,	 1 },
     { NULL }
 };
 
 /*
  * Assorted relative-time words.
  */
-static CONST TABLE OtherTable[] = {
-    { "tomorrow",       tDAY_UNIT,      1 },
-    { "yesterday",      tDAY_UNIT,     -1 },
-    { "today",          tDAY_UNIT,      0 },
-    { "now",            tSEC_UNIT,      0 },
-    { "last",           tUNUMBER,      -1 },
-    { "this",           tSEC_UNIT,      0 },
-    { "next",           tNEXT,          1 },
+
+static const TABLE OtherTable[] = {
+    { "tomorrow",	tDAY_UNIT,	1 },
+    { "yesterday",	tDAY_UNIT,	-1 },
+    { "today",		tDAY_UNIT,	0 },
+    { "now",		tSEC_UNIT,	0 },
+    { "last",		tUNUMBER,	-1 },
+    { "this",		tSEC_UNIT,	0 },
+    { "next",		tNEXT,		1 },
 #if 0
-    { "first",          tUNUMBER,       1 },
-    { "second",         tUNUMBER,       2 },
-    { "third",          tUNUMBER,       3 },
-    { "fourth",         tUNUMBER,       4 },
-    { "fifth",          tUNUMBER,       5 },
-    { "sixth",          tUNUMBER,       6 },
-    { "seventh",        tUNUMBER,       7 },
-    { "eighth",         tUNUMBER,       8 },
-    { "ninth",          tUNUMBER,       9 },
-    { "tenth",          tUNUMBER,       10 },
-    { "eleventh",       tUNUMBER,       11 },
-    { "twelfth",        tUNUMBER,       12 },
+    { "first",		tUNUMBER,	1 },
+    { "second",		tUNUMBER,	2 },
+    { "third",		tUNUMBER,	3 },
+    { "fourth",		tUNUMBER,	4 },
+    { "fifth",		tUNUMBER,	5 },
+    { "sixth",		tUNUMBER,	6 },
+    { "seventh",	tUNUMBER,	7 },
+    { "eighth",		tUNUMBER,	8 },
+    { "ninth",		tUNUMBER,	9 },
+    { "tenth",		tUNUMBER,	10 },
+    { "eleventh",	tUNUMBER,	11 },
+    { "twelfth",	tUNUMBER,	12 },
 #endif
-    { "ago",            tAGO,   1 },
-    { "epoch",          tEPOCH,   0 },
-    { "stardate",       tSTARDATE, 0},
+    { "ago",		tAGO,		1 },
+    { "epoch",		tEPOCH,		0 },
+    { "stardate",	tSTARDATE,	0 },
     { NULL }
 };
 
 /*
- * The timezone table.  (Note: This table was modified to not use any floating
+ * The timezone table. (Note: This table was modified to not use any floating
  * point constants to work around an SGI compiler bug).
  */
-static CONST TABLE TimezoneTable[] = {
-    { "gmt",    tZONE,     HOUR( 0) },      /* Greenwich Mean */
-    { "ut",     tZONE,     HOUR( 0) },      /* Universal (Coordinated) */
-    { "utc",    tZONE,     HOUR( 0) },
-    { "uct",    tZONE,     HOUR( 0) },      /* Universal Coordinated Time */
-    { "wet",    tZONE,     HOUR( 0) },      /* Western European */
-    { "bst",    tDAYZONE,  HOUR( 0) },      /* British Summer */
-    { "wat",    tZONE,     HOUR( 1) },      /* West Africa */
-    { "at",     tZONE,     HOUR( 2) },      /* Azores */
-#if     0
+
+static const TABLE TimezoneTable[] = {
+    { "gmt",	tZONE,	   HOUR( 0) },	    /* Greenwich Mean */
+    { "ut",	tZONE,	   HOUR( 0) },	    /* Universal (Coordinated) */
+    { "utc",	tZONE,	   HOUR( 0) },
+    { "uct",	tZONE,	   HOUR( 0) },	    /* Universal Coordinated Time */
+    { "wet",	tZONE,	   HOUR( 0) },	    /* Western European */
+    { "bst",	tDAYZONE,  HOUR( 0) },	    /* British Summer */
+    { "wat",	tZONE,	   HOUR( 1) },	    /* West Africa */
+    { "at",	tZONE,	   HOUR( 2) },	    /* Azores */
+#if	0
     /* For completeness.  BST is also British Summer, and GST is
      * also Guam Standard. */
-    { "bst",    tZONE,     HOUR( 3) },      /* Brazil Standard */
-    { "gst",    tZONE,     HOUR( 3) },      /* Greenland Standard */
+    { "bst",	tZONE,	   HOUR( 3) },	    /* Brazil Standard */
+    { "gst",	tZONE,	   HOUR( 3) },	    /* Greenland Standard */
 #endif
-    { "nft",    tZONE,     HOUR( 7/2) },    /* Newfoundland */
-    { "nst",    tZONE,     HOUR( 7/2) },    /* Newfoundland Standard */
-    { "ndt",    tDAYZONE,  HOUR( 7/2) },    /* Newfoundland Daylight */
-    { "ast",    tZONE,     HOUR( 4) },      /* Atlantic Standard */
-    { "adt",    tDAYZONE,  HOUR( 4) },      /* Atlantic Daylight */
-    { "est",    tZONE,     HOUR( 5) },      /* Eastern Standard */
-    { "edt",    tDAYZONE,  HOUR( 5) },      /* Eastern Daylight */
-    { "cst",    tZONE,     HOUR( 6) },      /* Central Standard */
-    { "cdt",    tDAYZONE,  HOUR( 6) },      /* Central Daylight */
-    { "mst",    tZONE,     HOUR( 7) },      /* Mountain Standard */
-    { "mdt",    tDAYZONE,  HOUR( 7) },      /* Mountain Daylight */
-    { "pst",    tZONE,     HOUR( 8) },      /* Pacific Standard */
-    { "pdt",    tDAYZONE,  HOUR( 8) },      /* Pacific Daylight */
-    { "yst",    tZONE,     HOUR( 9) },      /* Yukon Standard */
-    { "ydt",    tDAYZONE,  HOUR( 9) },      /* Yukon Daylight */
-    { "hst",    tZONE,     HOUR(10) },      /* Hawaii Standard */
-    { "hdt",    tDAYZONE,  HOUR(10) },      /* Hawaii Daylight */
-    { "cat",    tZONE,     HOUR(10) },      /* Central Alaska */
-    { "ahst",   tZONE,     HOUR(10) },      /* Alaska-Hawaii Standard */
-    { "nt",     tZONE,     HOUR(11) },      /* Nome */
-    { "idlw",   tZONE,     HOUR(12) },      /* International Date Line West */
-    { "cet",    tZONE,    -HOUR( 1) },      /* Central European */
-    { "cest",   tDAYZONE, -HOUR( 1) },      /* Central European Summer */
-    { "met",    tZONE,    -HOUR( 1) },      /* Middle European */
-    { "mewt",   tZONE,    -HOUR( 1) },      /* Middle European Winter */
-    { "mest",   tDAYZONE, -HOUR( 1) },      /* Middle European Summer */
-    { "swt",    tZONE,    -HOUR( 1) },      /* Swedish Winter */
-    { "sst",    tDAYZONE, -HOUR( 1) },      /* Swedish Summer */
-    { "fwt",    tZONE,    -HOUR( 1) },      /* French Winter */
-    { "fst",    tDAYZONE, -HOUR( 1) },      /* French Summer */
-    { "eet",    tZONE,    -HOUR( 2) },      /* Eastern Europe, USSR Zone 1 */
-    { "bt",     tZONE,    -HOUR( 3) },      /* Baghdad, USSR Zone 2 */
-    { "it",     tZONE,    -HOUR( 7/2) },    /* Iran */
-    { "zp4",    tZONE,    -HOUR( 4) },      /* USSR Zone 3 */
-    { "zp5",    tZONE,    -HOUR( 5) },      /* USSR Zone 4 */
-    { "ist",    tZONE,    -HOUR(11/2) },    /* Indian Standard */
-    { "zp6",    tZONE,    -HOUR( 6) },      /* USSR Zone 5 */
-#if     0
+    { "nft",	tZONE,	   HOUR( 7/2) },    /* Newfoundland */
+    { "nst",	tZONE,	   HOUR( 7/2) },    /* Newfoundland Standard */
+    { "ndt",	tDAYZONE,  HOUR( 7/2) },    /* Newfoundland Daylight */
+    { "ast",	tZONE,	   HOUR( 4) },	    /* Atlantic Standard */
+    { "adt",	tDAYZONE,  HOUR( 4) },	    /* Atlantic Daylight */
+    { "est",	tZONE,	   HOUR( 5) },	    /* Eastern Standard */
+    { "edt",	tDAYZONE,  HOUR( 5) },	    /* Eastern Daylight */
+    { "cst",	tZONE,	   HOUR( 6) },	    /* Central Standard */
+    { "cdt",	tDAYZONE,  HOUR( 6) },	    /* Central Daylight */
+    { "mst",	tZONE,	   HOUR( 7) },	    /* Mountain Standard */
+    { "mdt",	tDAYZONE,  HOUR( 7) },	    /* Mountain Daylight */
+    { "pst",	tZONE,	   HOUR( 8) },	    /* Pacific Standard */
+    { "pdt",	tDAYZONE,  HOUR( 8) },	    /* Pacific Daylight */
+    { "yst",	tZONE,	   HOUR( 9) },	    /* Yukon Standard */
+    { "ydt",	tDAYZONE,  HOUR( 9) },	    /* Yukon Daylight */
+    { "hst",	tZONE,	   HOUR(10) },	    /* Hawaii Standard */
+    { "hdt",	tDAYZONE,  HOUR(10) },	    /* Hawaii Daylight */
+    { "cat",	tZONE,	   HOUR(10) },	    /* Central Alaska */
+    { "ahst",	tZONE,	   HOUR(10) },	    /* Alaska-Hawaii Standard */
+    { "nt",	tZONE,	   HOUR(11) },	    /* Nome */
+    { "idlw",	tZONE,	   HOUR(12) },	    /* International Date Line West */
+    { "cet",	tZONE,	  -HOUR( 1) },	    /* Central European */
+    { "cest",	tDAYZONE, -HOUR( 1) },	    /* Central European Summer */
+    { "met",	tZONE,	  -HOUR( 1) },	    /* Middle European */
+    { "mewt",	tZONE,	  -HOUR( 1) },	    /* Middle European Winter */
+    { "mest",	tDAYZONE, -HOUR( 1) },	    /* Middle European Summer */
+    { "swt",	tZONE,	  -HOUR( 1) },	    /* Swedish Winter */
+    { "sst",	tDAYZONE, -HOUR( 1) },	    /* Swedish Summer */
+    { "fwt",	tZONE,	  -HOUR( 1) },	    /* French Winter */
+    { "fst",	tDAYZONE, -HOUR( 1) },	    /* French Summer */
+    { "eet",	tZONE,	  -HOUR( 2) },	    /* Eastern Europe, USSR Zone 1 */
+    { "bt",	tZONE,	  -HOUR( 3) },	    /* Baghdad, USSR Zone 2 */
+    { "it",	tZONE,	  -HOUR( 7/2) },    /* Iran */
+    { "zp4",	tZONE,	  -HOUR( 4) },	    /* USSR Zone 3 */
+    { "zp5",	tZONE,	  -HOUR( 5) },	    /* USSR Zone 4 */
+    { "ist",	tZONE,	  -HOUR(11/2) },    /* Indian Standard */
+    { "zp6",	tZONE,	  -HOUR( 6) },	    /* USSR Zone 5 */
+#if	0
     /* For completeness.  NST is also Newfoundland Stanard, nad SST is
      * also Swedish Summer. */
-    { "nst",    tZONE,    -HOUR(13/2) },    /* North Sumatra */
-    { "sst",    tZONE,    -HOUR( 7) },      /* South Sumatra, USSR Zone 6 */
-#endif  /* 0 */
-    { "wast",   tZONE,    -HOUR( 7) },      /* West Australian Standard */
-    { "wadt",   tDAYZONE, -HOUR( 7) },      /* West Australian Daylight */
-    { "jt",     tZONE,    -HOUR(15/2) },    /* Java (3pm in Cronusland!) */
-    { "cct",    tZONE,    -HOUR( 8) },      /* China Coast, USSR Zone 7 */
-    { "jst",    tZONE,    -HOUR( 9) },      /* Japan Standard, USSR Zone 8 */
-    { "jdt",    tDAYZONE, -HOUR( 9) },      /* Japan Daylight */
-    { "kst",    tZONE,    -HOUR( 9) },      /* Korea Standard */
-    { "kdt",    tDAYZONE, -HOUR( 9) },      /* Korea Daylight */
-    { "cast",   tZONE,    -HOUR(19/2) },    /* Central Australian Standard */
-    { "cadt",   tDAYZONE, -HOUR(19/2) },    /* Central Australian Daylight */
-    { "east",   tZONE,    -HOUR(10) },      /* Eastern Australian Standard */
-    { "eadt",   tDAYZONE, -HOUR(10) },      /* Eastern Australian Daylight */
-    { "gst",    tZONE,    -HOUR(10) },      /* Guam Standard, USSR Zone 9 */
-    { "nzt",    tZONE,    -HOUR(12) },      /* New Zealand */
-    { "nzst",   tZONE,    -HOUR(12) },      /* New Zealand Standard */
-    { "nzdt",   tDAYZONE, -HOUR(12) },      /* New Zealand Daylight */
-    { "idle",   tZONE,    -HOUR(12) },      /* International Date Line East */
+    { "nst",	tZONE,	  -HOUR(13/2) },    /* North Sumatra */
+    { "sst",	tZONE,	  -HOUR( 7) },	    /* South Sumatra, USSR Zone 6 */
+#endif	/* 0 */
+    { "wast",	tZONE,	  -HOUR( 7) },	    /* West Australian Standard */
+    { "wadt",	tDAYZONE, -HOUR( 7) },	    /* West Australian Daylight */
+    { "jt",	tZONE,	  -HOUR(15/2) },    /* Java (3pm in Cronusland!) */
+    { "cct",	tZONE,	  -HOUR( 8) },	    /* China Coast, USSR Zone 7 */
+    { "jst",	tZONE,	  -HOUR( 9) },	    /* Japan Standard, USSR Zone 8 */
+    { "jdt",	tDAYZONE, -HOUR( 9) },	    /* Japan Daylight */
+    { "kst",	tZONE,	  -HOUR( 9) },	    /* Korea Standard */
+    { "kdt",	tDAYZONE, -HOUR( 9) },	    /* Korea Daylight */
+    { "cast",	tZONE,	  -HOUR(19/2) },    /* Central Australian Standard */
+    { "cadt",	tDAYZONE, -HOUR(19/2) },    /* Central Australian Daylight */
+    { "east",	tZONE,	  -HOUR(10) },	    /* Eastern Australian Standard */
+    { "eadt",	tDAYZONE, -HOUR(10) },	    /* Eastern Australian Daylight */
+    { "gst",	tZONE,	  -HOUR(10) },	    /* Guam Standard, USSR Zone 9 */
+    { "nzt",	tZONE,	  -HOUR(12) },	    /* New Zealand */
+    { "nzst",	tZONE,	  -HOUR(12) },	    /* New Zealand Standard */
+    { "nzdt",	tDAYZONE, -HOUR(12) },	    /* New Zealand Daylight */
+    { "idle",	tZONE,	  -HOUR(12) },	    /* International Date Line East */
     /* ADDED BY Marco Nijdam */
-    { "dst",    tDST,     HOUR( 0) },       /* DST on (hour is ignored) */
+    { "dst",	tDST,	  HOUR( 0) },	    /* DST on (hour is ignored) */
     /* End ADDED */
     {  NULL  }
 };
@@ -566,311 +677,102 @@ static CONST TABLE TimezoneTable[] = {
 /*
  * Military timezone table.
  */
-static CONST TABLE MilitaryTable[] = {
-    { "a",      tZONE,  HOUR(  1) },
-    { "b",      tZONE,  HOUR(  2) },
-    { "c",      tZONE,  HOUR(  3) },
-    { "d",      tZONE,  HOUR(  4) },
-    { "e",      tZONE,  HOUR(  5) },
-    { "f",      tZONE,  HOUR(  6) },
-    { "g",      tZONE,  HOUR(  7) },
-    { "h",      tZONE,  HOUR(  8) },
-    { "i",      tZONE,  HOUR(  9) },
-    { "k",      tZONE,  HOUR( 10) },
-    { "l",      tZONE,  HOUR( 11) },
-    { "m",      tZONE,  HOUR( 12) },
-    { "n",      tZONE,  HOUR(- 1) },
-    { "o",      tZONE,  HOUR(- 2) },
-    { "p",      tZONE,  HOUR(- 3) },
-    { "q",      tZONE,  HOUR(- 4) },
-    { "r",      tZONE,  HOUR(- 5) },
-    { "s",      tZONE,  HOUR(- 6) },
-    { "t",      tZONE,  HOUR(- 7) },
-    { "u",      tZONE,  HOUR(- 8) },
-    { "v",      tZONE,  HOUR(- 9) },
-    { "w",      tZONE,  HOUR(-10) },
-    { "x",      tZONE,  HOUR(-11) },
-    { "y",      tZONE,  HOUR(-12) },
-    { "z",      tZONE,  HOUR(  0) },
+
+static const TABLE MilitaryTable[] = {
+    { "a",	tZONE,	-HOUR( 1) },
+    { "b",	tZONE,	-HOUR( 2) },
+    { "c",	tZONE,	-HOUR( 3) },
+    { "d",	tZONE,	-HOUR( 4) },
+    { "e",	tZONE,	-HOUR( 5) },
+    { "f",	tZONE,	-HOUR( 6) },
+    { "g",	tZONE,	-HOUR( 7) },
+    { "h",	tZONE,	-HOUR( 8) },
+    { "i",	tZONE,	-HOUR( 9) },
+    { "k",	tZONE,	-HOUR(10) },
+    { "l",	tZONE,	-HOUR(11) },
+    { "m",	tZONE,	-HOUR(12) },
+    { "n",	tZONE,	HOUR(  1) },
+    { "o",	tZONE,	HOUR(  2) },
+    { "p",	tZONE,	HOUR(  3) },
+    { "q",	tZONE,	HOUR(  4) },
+    { "r",	tZONE,	HOUR(  5) },
+    { "s",	tZONE,	HOUR(  6) },
+    { "t",	tZONE,	HOUR(  7) },
+    { "u",	tZONE,	HOUR(  8) },
+    { "v",	tZONE,	HOUR(  9) },
+    { "w",	tZONE,	HOUR( 10) },
+    { "x",	tZONE,	HOUR( 11) },
+    { "y",	tZONE,	HOUR( 12) },
+    { "z",	tZONE,	HOUR( 0) },
     { NULL }
 };
 
-
 /*
  * Dump error messages in the bit bucket.
  */
+
 static void
-yyerror(s)
-    char  *s;
+TclDateerror(
+    YYLTYPE* location,
+    DateInfo* infoPtr,
+    const char *s)
 {
+    Tcl_Obj* t;
+    Tcl_AppendToObj(infoPtr->messages, infoPtr->separatrix, -1);
+    Tcl_AppendToObj(infoPtr->messages, s, -1);
+    Tcl_AppendToObj(infoPtr->messages, " (characters ", -1);
+    t = Tcl_NewIntObj(location->first_column);
+    Tcl_IncrRefCount(t);
+    Tcl_AppendObjToObj(infoPtr->messages, t);
+    Tcl_DecrRefCount(t);
+    Tcl_AppendToObj(infoPtr->messages, "-", -1);
+    t = Tcl_NewIntObj(location->last_column);
+    Tcl_IncrRefCount(t);
+    Tcl_AppendObjToObj(infoPtr->messages, t);
+    Tcl_DecrRefCount(t);
+    Tcl_AppendToObj(infoPtr->messages, ")", -1);
+    infoPtr->separatrix = "\n";
 }
 
-
 static time_t
-ToSeconds(Hours, Minutes, Seconds, Meridian)
-    time_t      Hours;
-    time_t      Minutes;
-    time_t      Seconds;
-    MERIDIAN    Meridian;
+ToSeconds(
+    time_t Hours,
+    time_t Minutes,
+    time_t Seconds,
+    MERIDIAN Meridian)
 {
-    if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59)
-        return -1;
+    if (Minutes < 0 || Minutes > 59 || Seconds < 0 || Seconds > 59) {
+	return -1;
+    }
     switch (Meridian) {
     case MER24:
-        if (Hours < 0 || Hours > 23)
-            return -1;
-        return (Hours * 60L + Minutes) * 60L + Seconds;
+	if (Hours < 0 || Hours > 23) {
+	    return -1;
+	}
+	return (Hours * 60L + Minutes) * 60L + Seconds;
     case MERam:
-        if (Hours < 1 || Hours > 12)
-            return -1;
-        return ((Hours % 12) * 60L + Minutes) * 60L + Seconds;
+	if (Hours < 1 || Hours > 12) {
+	    return -1;
+	}
+	return ((Hours % 12) * 60L + Minutes) * 60L + Seconds;
     case MERpm:
-        if (Hours < 1 || Hours > 12)
-            return -1;
-        return (((Hours % 12) + 12) * 60L + Minutes) * 60L + Seconds;
-    }
-    return -1;  /* Should never be reached */
-}
-
-/*
- *-----------------------------------------------------------------------------
- *
- * Convert --
- *
- *      Convert a {month, day, year, hours, minutes, seconds, meridian, dst}
- *      tuple into a clock seconds value.
- *
- * Results:
- *      0 or -1 indicating success or failure.
- *
- * Side effects:
- *      Fills TimePtr with the computed value.
- *
- *-----------------------------------------------------------------------------
- */
-static int
-Convert(Month, Day, Year, Hours, Minutes, Seconds, Meridian, DSTmode, TimePtr)
-    time_t      Month;
-    time_t      Day;
-    time_t      Year;
-    time_t      Hours;
-    time_t      Minutes;
-    time_t      Seconds;
-    MERIDIAN    Meridian;
-    DSTMODE     DSTmode;
-    time_t     *TimePtr;
-{
-    static int  DaysInMonth[12] = {
-        31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-    };
-    time_t tod;
-    time_t Julian;
-    int i;
-
-    /* Figure out how many days are in February for the given year.
-     * Every year divisible by 4 is a leap year.
-     * But, every year divisible by 100 is not a leap year.
-     * But, every year divisible by 400 is a leap year after all.
-     */
-    DaysInMonth[1] = IsLeapYear(Year) ? 29 : 28;
-
-    /* Check the inputs for validity */
-    if (Month < 1 || Month > 12
-	    || Year < START_OF_TIME || Year > END_OF_TIME
-	    || Day < 1 || Day > DaysInMonth[(int)--Month])
-        return -1;
-
-    /* Start computing the value.  First determine the number of days
-     * represented by the date, then multiply by the number of seconds/day.
-     */
-    for (Julian = Day - 1, i = 0; i < Month; i++)
-        Julian += DaysInMonth[i];
-    if (Year >= EPOCH) {
-        for (i = EPOCH; i < Year; i++)
-            Julian += 365 + IsLeapYear(i);
-    } else {
-        for (i = Year; i < EPOCH; i++)
-            Julian -= 365 + IsLeapYear(i);
-    }
-    Julian *= SECSPERDAY;
-
-    /* Add the timezone offset ?? */
-    Julian += yyTimezone * 60L;
-
-    /* Add the number of seconds represented by the time component */
-    if ((tod = ToSeconds(Hours, Minutes, Seconds, Meridian)) < 0)
-        return -1;
-    Julian += tod;
-
-    /* Perform a preliminary DST compensation ?? */
-    if (DSTmode == DSTon
-     || (DSTmode == DSTmaybe && TclpGetDate((TclpTime_t)&Julian, 0)->tm_isdst))
-        Julian -= 60 * 60;
-    *TimePtr = Julian;
-    return 0;
-}
-
-
-static time_t
-DSTcorrect(Start, Future)
-    time_t      Start;
-    time_t      Future;
-{
-    time_t      StartDay;
-    time_t      FutureDay;
-    StartDay = (TclpGetDate((TclpTime_t)&Start, 0)->tm_hour + 1) % 24;
-    FutureDay = (TclpGetDate((TclpTime_t)&Future, 0)->tm_hour + 1) % 24;
-    return (Future - Start) + (StartDay - FutureDay) * 60L * 60L;
-}
-
-
-static time_t
-NamedDay(Start, DayOrdinal, DayNumber)
-    time_t      Start;
-    time_t      DayOrdinal;
-    time_t      DayNumber;
-{
-    struct tm   *tm;
-    time_t      now;
-
-    now = Start;
-    tm = TclpGetDate((TclpTime_t)&now, 0);
-    now += SECSPERDAY * ((DayNumber - tm->tm_wday + 7) % 7);
-    now += 7 * SECSPERDAY * (DayOrdinal <= 0 ? DayOrdinal : DayOrdinal - 1);
-    return DSTcorrect(Start, now);
-}
-
-static time_t
-NamedMonth(Start, MonthOrdinal, MonthNumber)
-    time_t Start;
-    time_t MonthOrdinal;
-    time_t MonthNumber;
-{
-    struct tm *tm;
-    time_t now;
-    int result;
-    
-    now = Start;
-    tm = TclpGetDate((TclpTime_t)&now, 0);
-    /* To compute the next n'th month, we use this alg:
-     * add n to year value
-     * if currentMonth < requestedMonth decrement year value by 1 (so that
-     *  doing next february from january gives us february of the current year)
-     * set day to 1, time to 0
-     */
-    tm->tm_year += MonthOrdinal;
-    if (tm->tm_mon < MonthNumber - 1) {
-	tm->tm_year--;
-    }
-    result = Convert(MonthNumber, (time_t) 1, tm->tm_year + TM_YEAR_BASE,
-	    (time_t) 0, (time_t) 0, (time_t) 0, MER24, DSTmaybe, &now);
-    if (result < 0) {
-	return 0;
-    }
-    return DSTcorrect(Start, now);
-}
-
-static int
-RelativeMonth(Start, RelMonth, TimePtr)
-    time_t Start;
-    time_t RelMonth;
-    time_t *TimePtr;
-{
-    struct tm *tm;
-    time_t Month;
-    time_t Year;
-    time_t Julian;
-    int result;
-
-    if (RelMonth == 0) {
-        *TimePtr = 0;
-        return 0;
-    }
-    tm = TclpGetDate((TclpTime_t)&Start, 0);
-    Month = 12 * (tm->tm_year + TM_YEAR_BASE) + tm->tm_mon + RelMonth;
-    Year = Month / 12;
-    Month = Month % 12 + 1;
-    result = Convert(Month, (time_t) tm->tm_mday, Year,
-	    (time_t) tm->tm_hour, (time_t) tm->tm_min, (time_t) tm->tm_sec,
-	    MER24, DSTmaybe, &Julian);
-
-    /*
-     * The Julian time returned above is behind by one day, if "month" 
-     * or "year" is used to specify relative time and the GMT flag is true.
-     * This problem occurs only when the current time is closer to
-     * midnight, the difference being not more than its time difference
-     * with GMT. For example, in US/Pacific time zone, the problem occurs
-     * whenever the current time is between midnight to 8:00am or 7:00amDST.
-     * See Bug# 413397 for more details and sample script.
-     * To resolve this bug, we simply add the number of seconds corresponding
-     * to timezone difference with GMT to Julian time, if GMT flag is true.
-     */
-
-    if (TclDateTimezone == 0) {
-        Julian += TclpGetTimeZone((unsigned long) Start) * 60L;
-    }
-
-    /*
-     * The following iteration takes into account the case were we jump
-     * into a "short month".  Far example, "one month from Jan 31" will
-     * fail because there is no Feb 31.  The code below will reduce the
-     * day and try converting the date until we succed or the date equals
-     * 28 (which always works unless the date is bad in another way).
-     */
-
-    while ((result != 0) && (tm->tm_mday > 28)) {
-	tm->tm_mday--;
-	result = Convert(Month, (time_t) tm->tm_mday, Year,
-		(time_t) tm->tm_hour, (time_t) tm->tm_min, (time_t) tm->tm_sec,
-		MER24, DSTmaybe, &Julian);
-    }
-    if (result != 0) {
-	return -1;
+	if (Hours < 1 || Hours > 12) {
+	    return -1;
+	}
+	return (((Hours % 12) + 12) * 60L + Minutes) * 60L + Seconds;
     }
-    *TimePtr = DSTcorrect(Start, Julian);
-    return 0;
-}
-
-
-/*
- *-----------------------------------------------------------------------------
- *
- * RelativeDay --
- *
- *      Given a starting time and a number of days before or after, compute the
- *      DST corrected difference between those dates.
- *
- * Results:
- *     1 or -1 indicating success or failure.
- *
- * Side effects:
- *      Fills TimePtr with the computed value.
- *
- *-----------------------------------------------------------------------------
- */
-
-static int
-RelativeDay(Start, RelDay, TimePtr)
-    time_t Start;
-    time_t RelDay;
-    time_t *TimePtr;
-{
-    time_t new;
-
-    new = Start + (RelDay * 60 * 60 * 24);
-    *TimePtr = DSTcorrect(Start, new);
-    return 1;
+    return -1;			/* Should never be reached */
 }
 
 static int
-LookupWord(buff)
-    char                *buff;
+LookupWord(
+    YYSTYPE* yylvalPtr,
+    char *buff)
 {
     register char *p;
     register char *q;
-    register CONST TABLE *tp;
-    int i;
-    int abbrev;
+    register const TABLE *tp;
+    int i, abbrev;
 
     /*
      * Make it lowercase.
@@ -879,273 +781,346 @@ LookupWord(buff)
     Tcl_UtfToLower(buff);
 
     if (strcmp(buff, "am") == 0 || strcmp(buff, "a.m.") == 0) {
-        yylval.Meridian = MERam;
-        return tMERIDIAN;
+	yylvalPtr->Meridian = MERam;
+	return tMERIDIAN;
     }
     if (strcmp(buff, "pm") == 0 || strcmp(buff, "p.m.") == 0) {
-        yylval.Meridian = MERpm;
-        return tMERIDIAN;
+	yylvalPtr->Meridian = MERpm;
+	return tMERIDIAN;
     }
 
     /*
      * See if we have an abbreviation for a month.
      */
+
     if (strlen(buff) == 3) {
-        abbrev = 1;
+	abbrev = 1;
     } else if (strlen(buff) == 4 && buff[3] == '.') {
-        abbrev = 1;
-        buff[3] = '\0';
+	abbrev = 1;
+	buff[3] = '\0';
     } else {
-        abbrev = 0;
+	abbrev = 0;
     }
 
     for (tp = MonthDayTable; tp->name; tp++) {
-        if (abbrev) {
-            if (strncmp(buff, tp->name, 3) == 0) {
-                yylval.Number = tp->value;
-                return tp->type;
-            }
-        } else if (strcmp(buff, tp->name) == 0) {
-            yylval.Number = tp->value;
-            return tp->type;
-        }
+	if (abbrev) {
+	    if (strncmp(buff, tp->name, 3) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
+	} else if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     for (tp = TimezoneTable; tp->name; tp++) {
-        if (strcmp(buff, tp->name) == 0) {
-            yylval.Number = tp->value;
-            return tp->type;
-        }
+	if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     for (tp = UnitsTable; tp->name; tp++) {
-        if (strcmp(buff, tp->name) == 0) {
-            yylval.Number = tp->value;
-            return tp->type;
-        }
+	if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     /*
      * Strip off any plural and try the units table again.
      */
+
     i = strlen(buff) - 1;
-    if (buff[i] == 's') {
-        buff[i] = '\0';
-        for (tp = UnitsTable; tp->name; tp++) {
-            if (strcmp(buff, tp->name) == 0) {
-                yylval.Number = tp->value;
-                return tp->type;
-            }
+    if (i > 0 && buff[i] == 's') {
+	buff[i] = '\0';
+	for (tp = UnitsTable; tp->name; tp++) {
+	    if (strcmp(buff, tp->name) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
 	}
     }
 
     for (tp = OtherTable; tp->name; tp++) {
-        if (strcmp(buff, tp->name) == 0) {
-            yylval.Number = tp->value;
-            return tp->type;
-        }
+	if (strcmp(buff, tp->name) == 0) {
+	    yylvalPtr->Number = tp->value;
+	    return tp->type;
+	}
     }
 
     /*
      * Military timezones.
      */
+
     if (buff[1] == '\0' && !(*buff & 0x80)
-	    && isalpha(UCHAR(*buff))) {	/* INTL: ISO only */
-        for (tp = MilitaryTable; tp->name; tp++) {
-            if (strcmp(buff, tp->name) == 0) {
-                yylval.Number = tp->value;
-                return tp->type;
-            }
+	    && isalpha(UCHAR(*buff))) {			/* INTL: ISO only */
+	for (tp = MilitaryTable; tp->name; tp++) {
+	    if (strcmp(buff, tp->name) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
 	}
     }
 
     /*
      * Drop out any periods and try the timezone table again.
      */
-    for (i = 0, p = q = buff; *q; q++)
-        if (*q != '.') {
-            *p++ = *q;
-        } else {
-            i++;
+
+    for (i = 0, p = q = buff; *q; q++) {
+	if (*q != '.') {
+	    *p++ = *q;
+	} else {
+	    i++;
 	}
+    }
     *p = '\0';
     if (i) {
-        for (tp = TimezoneTable; tp->name; tp++) {
-            if (strcmp(buff, tp->name) == 0) {
-                yylval.Number = tp->value;
-                return tp->type;
-            }
+	for (tp = TimezoneTable; tp->name; tp++) {
+	    if (strcmp(buff, tp->name) == 0) {
+		yylvalPtr->Number = tp->value;
+		return tp->type;
+	    }
 	}
     }
-    
+
     return tID;
 }
 
-
 static int
-yylex()
+TclDatelex(
+    YYSTYPE* yylvalPtr,
+    YYLTYPE* location,
+    DateInfo *info)
 {
-    register char       c;
-    register char       *p;
-    char                buff[20];
-    int                 Count;
+    register char c;
+    register char *p;
+    char buff[20];
+    int Count;
 
+    location->first_column = yyInput - info->dateStart;
     for ( ; ; ) {
-        while (isspace(UCHAR(*yyInput))) {
-            yyInput++;
+	while (isspace(UCHAR(*yyInput))) {
+	    yyInput++;
 	}
 
-        if (isdigit(UCHAR(c = *yyInput))) { /* INTL: digit */
-	    /* convert the string into a number; count the number of digits */
+	if (isdigit(UCHAR(c = *yyInput))) { /* INTL: digit */
+	    /*
+	     * Convert the string into a number; count the number of digits.
+	     */
+
 	    Count = 0;
-            for (yylval.Number = 0;
-		    isdigit(UCHAR(c = *yyInput++)); ) { /* INTL: digit */
-                yylval.Number = 10 * yylval.Number + c - '0';
+	    for (yylvalPtr->Number = 0;
+		    isdigit(UCHAR(c = *yyInput++)); ) {	  /* INTL: digit */
+		yylvalPtr->Number = 10 * yylvalPtr->Number + c - '0';
 		Count++;
 	    }
-            yyInput--;
-	    /* A number with 6 or more digits is considered an ISO 8601 base */
+	    yyInput--;
+	    yyDigitCount = Count;
+
+	    /*
+	     * A number with 6 or more digits is considered an ISO 8601 base.
+	     */
+
 	    if (Count >= 6) {
+		location->last_column = yyInput - info->dateStart - 1;
 		return tISOBASE;
 	    } else {
+		location->last_column = yyInput - info->dateStart - 1;
 		return tUNUMBER;
 	    }
-        }
-        if (!(c & 0x80) && isalpha(UCHAR(c))) {	/* INTL: ISO only. */
-            for (p = buff; isalpha(UCHAR(c = *yyInput++)) /* INTL: ISO only. */
+	}
+	if (!(c & 0x80) && isalpha(UCHAR(c))) {		  /* INTL: ISO only. */
+	    for (p = buff; isalpha(UCHAR(c = *yyInput++)) /* INTL: ISO only. */
 		     || c == '.'; ) {
-                if (p < &buff[sizeof buff - 1]) {
-                    *p++ = c;
+		if (p < &buff[sizeof buff - 1]) {
+		    *p++ = c;
 		}
 	    }
-            *p = '\0';
-            yyInput--;
-            return LookupWord(buff);
-        }
-        if (c != '(') {
-            return *yyInput++;
-	}
-        Count = 0;
-        do {
-            c = *yyInput++;
-            if (c == '\0') {
-                return c;
+	    *p = '\0';
+	    yyInput--;
+	    location->last_column = yyInput - info->dateStart - 1;
+	    return LookupWord(yylvalPtr, buff);
+	}
+	if (c != '(') {
+	    location->last_column = yyInput - info->dateStart;
+	    return *yyInput++;
+	}
+	Count = 0;
+	do {
+	    c = *yyInput++;
+	    if (c == '\0') {
+		location->last_column = yyInput - info->dateStart - 1;
+		return c;
 	    } else if (c == '(') {
-                Count++;
+		Count++;
 	    } else if (c == ')') {
-                Count--;
+		Count--;
 	    }
-        } while (Count > 0);
+	} while (Count > 0);
     }
 }
 
-/*
- * Specify zone is of -50000 to force GMT.  (This allows BST to work).
- */
-
 int
-TclGetDate(p, now, zone, timePtr)
-    char *p;
-    Tcl_WideInt now;
-    long zone;
-    Tcl_WideInt *timePtr;
+TclClockOldscanObjCmd(
+    ClientData clientData,	/* Unused */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int objc,			/* Count of paraneters */
+    Tcl_Obj *CONST *objv)	/* Parameters */
 {
-    struct tm *tm;
-    time_t Start;
-    time_t Time;
-    time_t tod;
-    int thisyear;
-
-    yyInput = p;
-    /* now has to be cast to a time_t for 64bit compliance */
-    Start = (time_t) now;
-    tm = TclpGetDate((TclpTime_t) &Start, (zone == -50000));
-    thisyear = tm->tm_year + TM_YEAR_BASE;
-    yyYear = thisyear;
-    yyMonth = tm->tm_mon + 1;
-    yyDay = tm->tm_mday;
-    yyTimezone = zone;
-    if (zone == -50000) {
-        yyDSTmode = DSToff;  /* assume GMT */
-        yyTimezone = 0;
-    } else {
-        yyDSTmode = DSTmaybe;
+    Tcl_Obj *result, *resultElement;
+    int yr, mo, da;
+    DateInfo dateInfo;
+    DateInfo* info = &dateInfo;
+    int status;
+
+    if (objc != 5) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"stringToParse baseYear baseMonth baseDay" );
+	return TCL_ERROR;
     }
-    yyHour = 0;
-    yyMinutes = 0;
-    yySeconds = 0;
-    yyMeridian = MER24;
-    yyRelSeconds = 0;
-    yyRelMonth = 0;
-    yyRelDay = 0;
-    yyRelPointer = NULL;
+
+    yyInput = Tcl_GetString( objv[1] );
+    dateInfo.dateStart = yyInput;
 
     yyHaveDate = 0;
-    yyHaveDay = 0;
-    yyHaveOrdinalMonth = 0;
-    yyHaveRel = 0;
+    if (Tcl_GetIntFromObj(interp, objv[2], &yr) != TCL_OK
+	    || Tcl_GetIntFromObj(interp, objv[3], &mo) != TCL_OK
+	    || Tcl_GetIntFromObj(interp, objv[4], &da) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    yyYear = yr; yyMonth = mo; yyDay = da;
+
     yyHaveTime = 0;
+    yyHour = 0; yyMinutes = 0; yySeconds = 0; yyMeridian = MER24;
+
     yyHaveZone = 0;
+    yyTimezone = 0; yyDSTmode = DSTmaybe;
+
+    yyHaveOrdinalMonth = 0;
+    yyMonthOrdinal = 0;
+
+    yyHaveDay = 0;
+    yyDayOrdinal = 0; yyDayNumber = 0;
 
-    if (yyparse() || yyHaveTime > 1 || yyHaveZone > 1 || yyHaveDate > 1 ||
-	    yyHaveDay > 1 || yyHaveOrdinalMonth > 1) {
-        return -1;
+    yyHaveRel = 0;
+    yyRelMonth = 0; yyRelDay = 0; yyRelSeconds = 0; yyRelPointer = NULL;
+
+    dateInfo.messages = Tcl_NewObj();
+    dateInfo.separatrix = "";
+    Tcl_IncrRefCount(dateInfo.messages);
+
+    status = yyparse(&dateInfo);
+    if (status == 1) {
+	Tcl_SetObjResult(interp, dateInfo.messages);
+	Tcl_DecrRefCount(dateInfo.messages);
+	return TCL_ERROR;
+    } else if (status == 2) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("memory exhausted", -1));
+	Tcl_DecrRefCount(dateInfo.messages);
+	return TCL_ERROR;
+    } else if (status != 0) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("Unknown status returned "
+						  "from date parser. Please "
+						  "report this error as a "
+						  "bug in Tcl.", -1));
+	Tcl_DecrRefCount(dateInfo.messages);
+	return TCL_ERROR;
     }
-    
-    if (yyHaveDate || yyHaveTime || yyHaveDay) {
-	if (TclDateYear < 0) {
-	    TclDateYear = -TclDateYear;
-	}
-	/*
-	 * The following line handles years that are specified using
-	 * only two digits.  The line of code below implements a policy
-	 * defined by the X/Open workgroup on the millinium rollover.
-	 * Note: some of those dates may not actually be valid on some
-	 * platforms.  The POSIX standard startes that the dates 70-99
-	 * shall refer to 1970-1999 and 00-38 shall refer to 2000-2038.
-	 * This later definition should work on all platforms.
-	 */
-
-	if (TclDateYear < 100) {
-	    if (TclDateYear >= 69) {
-		TclDateYear += 1900;
-	    } else {
-		TclDateYear += 2000;
-	    }
-	}
-	if (Convert(yyMonth, yyDay, yyYear, yyHour, yyMinutes, yySeconds,
-		yyMeridian, yyDSTmode, &Start) < 0) {
-            return -1;
-	}
-    } else {
-        Start = (time_t) now;
-        if (!yyHaveRel) {
-            Start -= ((tm->tm_hour * 60L * 60L) +
-		    tm->tm_min * 60L) +	tm->tm_sec;
-	}
+    Tcl_DecrRefCount(dateInfo.messages);
+
+    if (yyHaveDate > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one date in string", -1));
+	return TCL_ERROR;
+    }
+    if (yyHaveTime > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one time of day in string", -1));
+	return TCL_ERROR;
+    }
+    if (yyHaveZone > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one time zone in string", -1));
+	return TCL_ERROR;
+    }
+    if (yyHaveDay > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one weekday in string", -1));
+	return TCL_ERROR;
+    }
+    if (yyHaveOrdinalMonth > 1) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("more than one ordinal month in string", -1));
+	return TCL_ERROR;
     }
 
-    Start += yyRelSeconds;
-    if (RelativeMonth(Start, yyRelMonth, &Time) < 0) {
-        return -1;
+    result = Tcl_NewObj();
+    resultElement = Tcl_NewObj();
+    if (yyHaveDate) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyYear));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyMonth));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyDay));
     }
-    Start += Time;
+    Tcl_ListObjAppendElement(interp, result, resultElement);
 
-    if (RelativeDay(Start, yyRelDay, &Time) < 0) {
-	return -1;
+    if (yyHaveTime) {
+	Tcl_ListObjAppendElement(interp, result, Tcl_NewIntObj((int)
+		ToSeconds(yyHour, yyMinutes, yySeconds, yyMeridian)));
+    } else {
+	Tcl_ListObjAppendElement(interp, result, Tcl_NewObj());
+    }
+
+    resultElement = Tcl_NewObj();
+    if (yyHaveZone) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) -yyTimezone));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj(1 - yyDSTmode));
+    }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
+
+    resultElement = Tcl_NewObj();
+    if (yyHaveRel) {
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyRelMonth));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyRelDay));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyRelSeconds));
     }
-    Start += Time;
-    
+    Tcl_ListObjAppendElement(interp, result, resultElement);
+
+    resultElement = Tcl_NewObj();
     if (yyHaveDay && !yyHaveDate) {
-        tod = NamedDay(Start, yyDayOrdinal, yyDayNumber);
-        Start += tod;
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyDayOrdinal));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyDayNumber));
     }
+    Tcl_ListObjAppendElement(interp, result, resultElement);
 
+    resultElement = Tcl_NewObj();
     if (yyHaveOrdinalMonth) {
-	tod = NamedMonth(Start, yyMonthOrdinal, yyMonth);
-	Start += tod;
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyMonthOrdinal));
+	Tcl_ListObjAppendElement(interp, resultElement,
+		Tcl_NewIntObj((int) yyMonth));
     }
-    
-    *timePtr = Start;
-    return 0;
+    Tcl_ListObjAppendElement(interp, result, resultElement);
+
+    Tcl_SetObjResult(interp, result);
+    return TCL_OK;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclHash.c b/generic/tclHash.c
index 3eaf395..256b073 100644
--- a/generic/tclHash.c
+++ b/generic/tclHash.c
@@ -7,8 +7,8 @@
  * Copyright (c) 1991-1993 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
@@ -17,24 +17,21 @@
  * Prevent macros from clashing with function definitions.
  */
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-#   undef Tcl_FindHashEntry
-#   undef Tcl_CreateHashEntry
-#endif
+#undef Tcl_FindHashEntry
+#undef Tcl_CreateHashEntry
 
 /*
- * When there are this many entries per bucket, on average, rebuild
- * the hash table to make it larger.
+ * When there are this many entries per bucket, on average, rebuild the hash
+ * table to make it larger.
  */
 
 #define REBUILD_MULTIPLIER	3
 
 /*
- * The following macro takes a preliminary integer hash value and
- * produces an index into a hash tables bucket list.  The idea is
- * to make it so that preliminary values that are arbitrarily similar
- * will end up in different buckets.  The hash function was taken
- * from a random-number generator.
+ * The following macro takes a preliminary integer hash value and produces an
+ * index into a hash tables bucket list. The idea is to make it so that
+ * preliminary values that are arbitrarily similar will end up in different
+ * buckets. The hash function was taken from a random-number generator.
  */
 
 #define RANDOM_INDEX(tablePtr, i) \
@@ -44,60 +41,41 @@
  * Prototypes for the array hash key methods.
  */
 
-static Tcl_HashEntry *	AllocArrayEntry _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
-static int		CompareArrayKeys _ANSI_ARGS_((
-			    VOID *keyPtr, Tcl_HashEntry *hPtr));
-static unsigned int	HashArrayKey _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
+static Tcl_HashEntry *	AllocArrayEntry(Tcl_HashTable *tablePtr, VOID *keyPtr);
+static int		CompareArrayKeys(VOID *keyPtr, Tcl_HashEntry *hPtr);
+static unsigned int	HashArrayKey(Tcl_HashTable *tablePtr, VOID *keyPtr);
 
 /*
  * Prototypes for the one word hash key methods.
  */
 
 #if 0
-static Tcl_HashEntry *	AllocOneWordEntry _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
-static int		CompareOneWordKeys _ANSI_ARGS_((
-			    VOID *keyPtr, Tcl_HashEntry *hPtr));
-static unsigned int	HashOneWordKey _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
+static Tcl_HashEntry *	AllocOneWordEntry(Tcl_HashTable *tablePtr,
+			    VOID *keyPtr);
+static int		CompareOneWordKeys(VOID *keyPtr, Tcl_HashEntry *hPtr);
+static unsigned int	HashOneWordKey(Tcl_HashTable *tablePtr, VOID *keyPtr);
 #endif
 
 /*
  * Prototypes for the string hash key methods.
  */
 
-static Tcl_HashEntry *	AllocStringEntry _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
-static int		CompareStringKeys _ANSI_ARGS_((
-			    VOID *keyPtr, Tcl_HashEntry *hPtr));
-static unsigned int	HashStringKey _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
+static Tcl_HashEntry *	AllocStringEntry(Tcl_HashTable *tablePtr,
+			    VOID *keyPtr);
+static int		CompareStringKeys(VOID *keyPtr, Tcl_HashEntry *hPtr);
+static unsigned int	HashStringKey(Tcl_HashTable *tablePtr, VOID *keyPtr);
 
 /*
- * Procedure prototypes for static procedures in this file:
+ * Function prototypes for static functions in this file:
  */
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-static Tcl_HashEntry *	BogusFind _ANSI_ARGS_((Tcl_HashTable *tablePtr,
-			    CONST char *key));
-static Tcl_HashEntry *	BogusCreate _ANSI_ARGS_((Tcl_HashTable *tablePtr,
-			    CONST char *key, int *newPtr));
-static Tcl_HashEntry *	FindHashEntry _ANSI_ARGS_((Tcl_HashTable *tablePtr,
-			    CONST char *key));
-static Tcl_HashEntry *  CreateHashEntry _ANSI_ARGS_((Tcl_HashTable *tablePtr,
-			    CONST char *key, int *newPtr));
-
-#endif
-
-static void		RebuildTable _ANSI_ARGS_((Tcl_HashTable *tablePtr));
+static Tcl_HashEntry *	BogusFind(Tcl_HashTable *tablePtr, const char *key);
+static Tcl_HashEntry *	BogusCreate(Tcl_HashTable *tablePtr, const char *key,
+			    int *newPtr);
+static Tcl_HashEntry *	CreateHashEntry(Tcl_HashTable *tablePtr, const char *key,
+			    int *newPtr);
+static Tcl_HashEntry *	FindHashEntry(Tcl_HashTable *tablePtr, const char *key);
+static void		RebuildTable(Tcl_HashTable *tablePtr);
 
 Tcl_HashKeyType tclArrayHashKeyType = {
     TCL_HASH_KEY_TYPE_VERSION,		/* version */
@@ -125,15 +103,14 @@ Tcl_HashKeyType tclStringHashKeyType = {
     AllocStringEntry,			/* allocEntryProc */
     NULL				/* freeEntryProc */
 };
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_InitHashTable --
  *
- *	Given storage for a hash table, set up the fields to prepare
- *	the hash table for use.
+ *	Given storage for a hash table, set up the fields to prepare the hash
+ *	table for use.
  *
  * Results:
  *	None.
@@ -147,19 +124,21 @@ Tcl_HashKeyType tclStringHashKeyType = {
 
 #undef Tcl_InitHashTable
 void
-Tcl_InitHashTable(tablePtr, keyType)
-    register Tcl_HashTable *tablePtr;	/* Pointer to table record, which
-					 * is supplied by the caller. */
-    int keyType;			/* Type of keys to use in table:
-					 * TCL_STRING_KEYS, TCL_ONE_WORD_KEYS,
-					 * or an integer >= 2. */
+Tcl_InitHashTable(
+    register Tcl_HashTable *tablePtr,
+				/* Pointer to table record, which is supplied
+				 * by the caller. */
+    int keyType)		/* Type of keys to use in table:
+				 * TCL_STRING_KEYS, TCL_ONE_WORD_KEYS, or an
+				 * integer >= 2. */
 {
     /*
-     * Use a special value to inform the extended version that it must
-     * not access any of the new fields in the Tcl_HashTable. If an
-     * extension is rebuilt then any calls to this function will be
-     * redirected to the extended version by a macro.
+     * Use a special value to inform the extended version that it must not
+     * access any of the new fields in the Tcl_HashTable. If an extension is
+     * rebuilt then any calls to this function will be redirected to the
+     * extended version by a macro.
      */
+
     Tcl_InitCustomHashTable(tablePtr, keyType, (Tcl_HashKeyType *) -1);
 }
 
@@ -168,9 +147,9 @@ Tcl_InitHashTable(tablePtr, keyType)
  *
  * Tcl_InitCustomHashTable --
  *
- *	Given storage for a hash table, set up the fields to prepare
- *	the hash table for use. This is an extended version of
- *	Tcl_InitHashTable which supports user defined keys.
+ *	Given storage for a hash table, set up the fields to prepare the hash
+ *	table for use. This is an extended version of Tcl_InitHashTable which
+ *	supports user defined keys.
  *
  * Results:
  *	None.
@@ -183,19 +162,19 @@ Tcl_InitHashTable(tablePtr, keyType)
  */
 
 void
-Tcl_InitCustomHashTable(tablePtr, keyType, typePtr)
-    register Tcl_HashTable *tablePtr;	/* Pointer to table record, which
-					 * is supplied by the caller. */
-    int keyType;			/* Type of keys to use in table:
-					 * TCL_STRING_KEYS, TCL_ONE_WORD_KEYS,
-					 * TCL_CUSTOM_TYPE_KEYS,
-					 * TCL_CUSTOM_PTR_KEYS,  or an
-					 * integer >= 2. */
-    Tcl_HashKeyType *typePtr;		/* Pointer to structure which defines
-					 * the behaviour of this table. */
+Tcl_InitCustomHashTable(
+    register Tcl_HashTable *tablePtr,
+				/* Pointer to table record, which is supplied
+				 * by the caller. */
+    int keyType,		/* Type of keys to use in table:
+				 * TCL_STRING_KEYS, TCL_ONE_WORD_KEYS,
+				 * TCL_CUSTOM_TYPE_KEYS, TCL_CUSTOM_PTR_KEYS,
+				 * or an integer >= 2. */
+    Tcl_HashKeyType *typePtr) /* Pointer to structure which defines the
+				 * behaviour of this table. */
 {
 #if (TCL_SMALL_HASH_TABLE != 4)
-    panic("Tcl_InitCustomHashTable: TCL_SMALL_HASH_TABLE is %d, not 4\n",
+    Tcl_Panic("Tcl_InitCustomHashTable: TCL_SMALL_HASH_TABLE is %d, not 4",
 	    TCL_SMALL_HASH_TABLE);
 #endif
 
@@ -208,7 +187,6 @@ Tcl_InitCustomHashTable(tablePtr, keyType, typePtr)
     tablePtr->downShift = 28;
     tablePtr->mask = 3;
     tablePtr->keyType = keyType;
-#if TCL_PRESERVE_BINARY_COMPATABILITY
     tablePtr->findProc = FindHashEntry;
     tablePtr->createProc = CreateHashEntry;
 
@@ -219,41 +197,16 @@ Tcl_InitCustomHashTable(tablePtr, keyType, typePtr)
 	 */
     } else if (typePtr != (Tcl_HashKeyType *) -1) {
 	/*
-	 * The caller is requesting a customized hash table so it must be
-	 * an extended version.
+	 * The caller is requesting a customized hash table so it must be an
+	 * extended version.
 	 */
+
 	tablePtr->typePtr = typePtr;
     } else {
 	/*
-	 * The caller has not been rebuilt so the hash table is not
-	 * extended.
-	 */
-    }
-#else
-    if (typePtr == NULL) {
-	/*
-	 * Use the key type to decide which key type is needed.
-	 */
-	if (keyType == TCL_STRING_KEYS) {
-	    typePtr = &tclStringHashKeyType;
-	} else if (keyType == TCL_ONE_WORD_KEYS) {
-	    typePtr = &tclOneWordHashKeyType;
-	} else if (keyType == TCL_CUSTOM_TYPE_KEYS) {
-	    Tcl_Panic ("No type structure specified for TCL_CUSTOM_TYPE_KEYS");
-	} else if (keyType == TCL_CUSTOM_PTR_KEYS) {
-	    Tcl_Panic ("No type structure specified for TCL_CUSTOM_PTR_KEYS");
-	} else {
-	    typePtr = &tclArrayHashKeyType;
-	}
-    } else if (typePtr == (Tcl_HashKeyType *) -1) {
-	/*
-	 * If the caller has not been rebuilt then we cannot continue as
-	 * the hash table is not an extended version.
+	 * The caller has not been rebuilt so the hash table is not extended.
 	 */
-	Tcl_Panic ("Hash table is not compatible");
     }
-    tablePtr->typePtr = typePtr;
-#endif
 }
 
 /*
@@ -264,8 +217,8 @@ Tcl_InitCustomHashTable(tablePtr, keyType, typePtr)
  *	Given a hash table find the entry with a matching key.
  *
  * Results:
- *	The return value is a token for the matching entry in the
- *	hash table, or NULL if there was no matching entry.
+ *	The return value is a token for the matching entry in the hash table,
+ *	or NULL if there was no matching entry.
  *
  * Side effects:
  *	None.
@@ -274,104 +227,36 @@ Tcl_InitCustomHashTable(tablePtr, keyType, typePtr)
  */
 
 Tcl_HashEntry *
-Tcl_FindHashEntry(tablePtr, key)
-    Tcl_HashTable *tablePtr;	/* Table in which to lookup entry. */
-    CONST char *key;		/* Key to use to find matching entry. */
-#if TCL_PRESERVE_BINARY_COMPATABILITY
+Tcl_FindHashEntry(
+    Tcl_HashTable *tablePtr,	/* Table in which to lookup entry. */
+    const char *key)		/* Key to use to find matching entry. */
 {
-    return tablePtr->findProc(tablePtr, key);
+    return (*((tablePtr)->findProc))(tablePtr, key);
 }
 
 static Tcl_HashEntry *
-FindHashEntry(tablePtr, key)
-    Tcl_HashTable *tablePtr;	/* Table in which to lookup entry. */
-    CONST char *key;		/* Key to use to find matching entry. */
-#endif /* TCL_PRESERVE_BINARY_COMPATABILITY */
+FindHashEntry(
+    Tcl_HashTable *tablePtr,	/* Table in which to lookup entry. */
+    const char *key)		/* Key to use to find matching entry. */
 {
-    register Tcl_HashEntry *hPtr;
-    Tcl_HashKeyType *typePtr;
-    unsigned int hash;
-    int index;
-
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-    if (tablePtr->keyType == TCL_STRING_KEYS) {
-	typePtr = &tclStringHashKeyType;
-    } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
-	typePtr = &tclOneWordHashKeyType;
-    } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
-	       || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
-	typePtr = tablePtr->typePtr;
-    } else {
-	typePtr = &tclArrayHashKeyType;
-    }
-#else
-    typePtr = tablePtr->typePtr;
-    if (typePtr == NULL) {
-	Tcl_Panic("called Tcl_FindHashEntry on deleted table");
-	return NULL;
-    }
-#endif
-
-    if (typePtr->hashKeyProc) {
-	hash = typePtr->hashKeyProc (tablePtr, (VOID *) key);
-	if (typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
-	    index = RANDOM_INDEX (tablePtr, hash);
-	} else {
-	    index = hash & tablePtr->mask;
-	}
-    } else {
-	hash = (unsigned int) key;
-	index = RANDOM_INDEX (tablePtr, hash);
-    }
-
-    /*
-     * Search all of the entries in the appropriate bucket.
-     */
-
-    if (typePtr->compareKeysProc) {
-	Tcl_CompareHashKeysProc *compareKeysProc = typePtr->compareKeysProc;
-	for (hPtr = tablePtr->buckets[index]; hPtr != NULL;
-	        hPtr = hPtr->nextPtr) {
-#if TCL_HASH_KEY_STORE_HASH
-	    if (hash != (unsigned int) hPtr->hash) {
-		continue;
-	    }
-#endif
-	    if (compareKeysProc ((VOID *) key, hPtr)) {
-		return hPtr;
-	    }
-	}
-    } else {
-	for (hPtr = tablePtr->buckets[index]; hPtr != NULL;
-	        hPtr = hPtr->nextPtr) {
-#if TCL_HASH_KEY_STORE_HASH
-	    if (hash != (unsigned int) hPtr->hash) {
-		continue;
-	    }
-#endif
-	    if (key == hPtr->key.oneWordValue) {
-		return hPtr;
-	    }
-	}
-    }
-
-    return NULL;
+    return CreateHashEntry(tablePtr, key, NULL);
 }
+
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_CreateHashEntry --
  *
- *	Given a hash table with string keys, and a string key, find
- *	the entry with a matching key.  If there is no matching entry,
- *	then create a new entry that does match.
+ *	Given a hash table with string keys, and a string key, find the entry
+ *	with a matching key. If there is no matching entry, then create a new
+ *	entry that does match.
  *
  * Results:
- *	The return value is a pointer to the matching entry.  If this
- *	is a newly-created entry, then *newPtr will be set to a non-zero
- *	value;  otherwise *newPtr will be set to 0.  If this is a new
- *	entry the value stored in the entry will initially be 0.
+ *	The return value is a pointer to the matching entry. If this is a
+ *	newly-created entry, then *newPtr will be set to a non-zero value;
+ *	otherwise *newPtr will be set to 0. If this is a new entry the value
+ *	stored in the entry will initially be 0.
  *
  * Side effects:
  *	A new entry may be added to the hash table.
@@ -380,59 +265,49 @@ FindHashEntry(tablePtr, key)
  */
 
 Tcl_HashEntry *
-Tcl_CreateHashEntry(tablePtr, key, newPtr)
-    Tcl_HashTable *tablePtr;	/* Table in which to lookup entry. */
-    CONST char *key;		/* Key to use to find or create matching
+Tcl_CreateHashEntry(
+    Tcl_HashTable *tablePtr,	/* Table in which to lookup entry. */
+    const char *key,		/* Key to use to find or create matching
 				 * entry. */
-    int *newPtr;		/* Store info here telling whether a new
-				 * entry was created. */
-#if TCL_PRESERVE_BINARY_COMPATABILITY
+    int *newPtr)		/* Store info here telling whether a new entry
+				 * was created. */
 {
-    return tablePtr->createProc(tablePtr, key, newPtr);
+    return (*((tablePtr)->createProc))(tablePtr, key, newPtr);
 }
 
 static Tcl_HashEntry *
-CreateHashEntry(tablePtr, key, newPtr)
-    Tcl_HashTable *tablePtr;	/* Table in which to lookup entry. */
-    CONST char *key;		/* Key to use to find or create matching
+CreateHashEntry(
+    Tcl_HashTable *tablePtr,	/* Table in which to lookup entry. */
+    const char *key,		/* Key to use to find or create matching
 				 * entry. */
-    int *newPtr;		/* Store info here telling whether a new
-				 * entry was created. */
-#endif /* TCL_PRESERVE_BINARY_COMPATABILITY */
+    int *newPtr)		/* Store info here telling whether a new entry
+				 * was created. */
 {
     register Tcl_HashEntry *hPtr;
-    Tcl_HashKeyType *typePtr;
+    const Tcl_HashKeyType *typePtr;
     unsigned int hash;
     int index;
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
     if (tablePtr->keyType == TCL_STRING_KEYS) {
 	typePtr = &tclStringHashKeyType;
     } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
 	typePtr = &tclOneWordHashKeyType;
     } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
-	       || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
+	    || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
 	typePtr = tablePtr->typePtr;
     } else {
 	typePtr = &tclArrayHashKeyType;
     }
-#else
-    typePtr = tablePtr->typePtr;
-    if (typePtr == NULL) {
-	Tcl_Panic("called Tcl_CreateHashEntry on deleted table");
-	return NULL;
-    }
-#endif
 
     if (typePtr->hashKeyProc) {
-	hash = typePtr->hashKeyProc (tablePtr, (VOID *) key);
+	hash = typePtr->hashKeyProc(tablePtr, (VOID *) key);
 	if (typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
 	    index = RANDOM_INDEX (tablePtr, hash);
 	} else {
 	    index = hash & tablePtr->mask;
 	}
     } else {
-	hash = (unsigned int) key;
+	hash = PTR2UINT(key);
 	index = RANDOM_INDEX (tablePtr, hash);
     }
 
@@ -443,51 +318,56 @@ CreateHashEntry(tablePtr, key, newPtr)
     if (typePtr->compareKeysProc) {
 	Tcl_CompareHashKeysProc *compareKeysProc = typePtr->compareKeysProc;
 	for (hPtr = tablePtr->buckets[index]; hPtr != NULL;
-	        hPtr = hPtr->nextPtr) {
+		hPtr = hPtr->nextPtr) {
 #if TCL_HASH_KEY_STORE_HASH
-	    if (hash != (unsigned int) hPtr->hash) {
+	    if (hash != PTR2UINT(hPtr->hash)) {
 		continue;
 	    }
 #endif
-	    if (compareKeysProc ((VOID *) key, hPtr)) {
-		*newPtr = 0;
+	    if (compareKeysProc((VOID *) key, hPtr)) {
+		if (newPtr) {
+		    *newPtr = 0;
+		}
 		return hPtr;
 	    }
 	}
     } else {
 	for (hPtr = tablePtr->buckets[index]; hPtr != NULL;
-	        hPtr = hPtr->nextPtr) {
+		hPtr = hPtr->nextPtr) {
 #if TCL_HASH_KEY_STORE_HASH
-	    if (hash != (unsigned int) hPtr->hash) {
+	    if (hash != PTR2UINT(hPtr->hash)) {
 		continue;
 	    }
 #endif
 	    if (key == hPtr->key.oneWordValue) {
-		*newPtr = 0;
+		if (newPtr) {
+		    *newPtr = 0;
+		}
 		return hPtr;
 	    }
 	}
     }
 
+    if (!newPtr) {
+	return NULL;
+    }
+
     /*
-     * Entry not found.  Add a new one to the bucket.
+     * Entry not found. Add a new one to the bucket.
      */
 
     *newPtr = 1;
     if (typePtr->allocEntryProc) {
-	hPtr = typePtr->allocEntryProc (tablePtr, (VOID *) key);
+	hPtr = typePtr->allocEntryProc(tablePtr, (VOID *) key);
     } else {
 	hPtr = (Tcl_HashEntry *) ckalloc((unsigned) sizeof(Tcl_HashEntry));
 	hPtr->key.oneWordValue = (char *) key;
+	hPtr->clientData = 0;
     }
 
     hPtr->tablePtr = tablePtr;
 #if TCL_HASH_KEY_STORE_HASH
-#   if TCL_PRESERVE_BINARY_COMPATABILITY
-    hPtr->hash = (VOID *) hash;
-#   else
-    hPtr->hash = hash;
-#   endif
+    hPtr->hash = UINT2PTR(hash);
     hPtr->nextPtr = tablePtr->buckets[index];
     tablePtr->buckets[index] = hPtr;
 #else
@@ -495,12 +375,11 @@ CreateHashEntry(tablePtr, key, newPtr)
     hPtr->nextPtr = *hPtr->bucketPtr;
     *hPtr->bucketPtr = hPtr;
 #endif
-    hPtr->clientData = 0;
     tablePtr->numEntries++;
 
     /*
-     * If the table has exceeded a decent size, rebuild it with many
-     * more buckets.
+     * If the table has exceeded a decent size, rebuild it with many more
+     * buckets.
      */
 
     if (tablePtr->numEntries >= tablePtr->rebuildSize) {
@@ -520,20 +399,19 @@ CreateHashEntry(tablePtr, key, newPtr)
  *	None.
  *
  * Side effects:
- *	The entry given by entryPtr is deleted from its table and
- *	should never again be used by the caller.  It is up to the
- *	caller to free the clientData field of the entry, if that
- *	is relevant.
+ *	The entry given by entryPtr is deleted from its table and should never
+ *	again be used by the caller. It is up to the caller to free the
+ *	clientData field of the entry, if that is relevant.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteHashEntry(entryPtr)
-    Tcl_HashEntry *entryPtr;
+Tcl_DeleteHashEntry(
+    Tcl_HashEntry *entryPtr)
 {
     register Tcl_HashEntry *prevPtr;
-    Tcl_HashKeyType *typePtr;
+    const Tcl_HashKeyType *typePtr;
     Tcl_HashTable *tablePtr;
     Tcl_HashEntry **bucketPtr;
 #if TCL_HASH_KEY_STORE_HASH
@@ -542,27 +420,23 @@ Tcl_DeleteHashEntry(entryPtr)
 
     tablePtr = entryPtr->tablePtr;
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
     if (tablePtr->keyType == TCL_STRING_KEYS) {
 	typePtr = &tclStringHashKeyType;
     } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
 	typePtr = &tclOneWordHashKeyType;
     } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
-	       || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
+	    || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
 	typePtr = tablePtr->typePtr;
     } else {
 	typePtr = &tclArrayHashKeyType;
     }
-#else
-    typePtr = tablePtr->typePtr;
-#endif
 
 #if TCL_HASH_KEY_STORE_HASH
     if (typePtr->hashKeyProc == NULL
-	|| typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
-	index = RANDOM_INDEX (tablePtr, entryPtr->hash);
+	    || typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
+	index = RANDOM_INDEX(tablePtr, PTR2UINT(entryPtr->hash));
     } else {
-	index = ((unsigned int) entryPtr->hash) & tablePtr->mask;
+	index = PTR2UINT(entryPtr->hash) & tablePtr->mask;
     }
 
     bucketPtr = &(tablePtr->buckets[index]);
@@ -575,7 +449,7 @@ Tcl_DeleteHashEntry(entryPtr)
     } else {
 	for (prevPtr = *bucketPtr; ; prevPtr = prevPtr->nextPtr) {
 	    if (prevPtr == NULL) {
-		panic("malformed bucket chain in Tcl_DeleteHashEntry");
+		Tcl_Panic("malformed bucket chain in Tcl_DeleteHashEntry");
 	    }
 	    if (prevPtr->nextPtr == entryPtr) {
 		prevPtr->nextPtr = entryPtr->nextPtr;
@@ -597,8 +471,8 @@ Tcl_DeleteHashEntry(entryPtr)
  *
  * Tcl_DeleteHashTable --
  *
- *	Free up everything associated with a hash table except for
- *	the record for the table itself.
+ *	Free up everything associated with a hash table except for the record
+ *	for the table itself.
  *
  * Results:
  *	None.
@@ -610,27 +484,23 @@ Tcl_DeleteHashEntry(entryPtr)
  */
 
 void
-Tcl_DeleteHashTable(tablePtr)
-    register Tcl_HashTable *tablePtr;		/* Table to delete. */
+Tcl_DeleteHashTable(
+    register Tcl_HashTable *tablePtr)	/* Table to delete. */
 {
     register Tcl_HashEntry *hPtr, *nextPtr;
-    Tcl_HashKeyType *typePtr;
+    const Tcl_HashKeyType *typePtr;
     int i;
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
     if (tablePtr->keyType == TCL_STRING_KEYS) {
 	typePtr = &tclStringHashKeyType;
     } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
 	typePtr = &tclOneWordHashKeyType;
     } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
-	       || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
+	    || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
 	typePtr = tablePtr->typePtr;
     } else {
 	typePtr = &tclArrayHashKeyType;
     }
-#else
-    typePtr = tablePtr->typePtr;
-#endif
 
     /*
      * Free up all the entries in the table.
@@ -654,7 +524,11 @@ Tcl_DeleteHashTable(tablePtr)
      */
 
     if (tablePtr->buckets != tablePtr->staticBuckets) {
-	ckfree((char *) tablePtr->buckets);
+	if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
+	    TclpSysFree((char *) tablePtr->buckets);
+	} else {
+	    ckfree((char *) tablePtr->buckets);
+	}
     }
 
     /*
@@ -662,12 +536,8 @@ Tcl_DeleteHashTable(tablePtr)
      * re-initialization.
      */
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
     tablePtr->findProc = BogusFind;
     tablePtr->createProc = BogusCreate;
-#else
-    tablePtr->typePtr = NULL;
-#endif
 }
 
 /*
@@ -675,16 +545,14 @@ Tcl_DeleteHashTable(tablePtr)
  *
  * Tcl_FirstHashEntry --
  *
- *	Locate the first entry in a hash table and set up a record
- *	that can be used to step through all the remaining entries
- *	of the table.
+ *	Locate the first entry in a hash table and set up a record that can be
+ *	used to step through all the remaining entries of the table.
  *
  * Results:
- *	The return value is a pointer to the first entry in tablePtr,
- *	or NULL if tablePtr has no entries in it.  The memory at
- *	*searchPtr is initialized so that subsequent calls to
- *	Tcl_NextHashEntry will return all of the entries in the table,
- *	one at a time.
+ *	The return value is a pointer to the first entry in tablePtr, or NULL
+ *	if tablePtr has no entries in it. The memory at *searchPtr is
+ *	initialized so that subsequent calls to Tcl_NextHashEntry will return
+ *	all of the entries in the table, one at a time.
  *
  * Side effects:
  *	None.
@@ -693,10 +561,10 @@ Tcl_DeleteHashTable(tablePtr)
  */
 
 Tcl_HashEntry *
-Tcl_FirstHashEntry(tablePtr, searchPtr)
-    Tcl_HashTable *tablePtr;		/* Table to search. */
-    Tcl_HashSearch *searchPtr;		/* Place to store information about
-					 * progress through the table. */
+Tcl_FirstHashEntry(
+    Tcl_HashTable *tablePtr,	/* Table to search. */
+    Tcl_HashSearch *searchPtr)	/* Place to store information about progress
+				 * through the table. */
 {
     searchPtr->tablePtr = tablePtr;
     searchPtr->nextIndex = 0;
@@ -710,12 +578,12 @@ Tcl_FirstHashEntry(tablePtr, searchPtr)
  * Tcl_NextHashEntry --
  *
  *	Once a hash table enumeration has been initiated by calling
- *	Tcl_FirstHashEntry, this procedure may be called to return
- *	successive elements of the table.
+ *	Tcl_FirstHashEntry, this function may be called to return successive
+ *	elements of the table.
  *
  * Results:
- *	The return value is the next entry in the hash table being
- *	enumerated, or NULL if the end of the table is reached.
+ *	The return value is the next entry in the hash table being enumerated,
+ *	or NULL if the end of the table is reached.
  *
  * Side effects:
  *	None.
@@ -724,11 +592,12 @@ Tcl_FirstHashEntry(tablePtr, searchPtr)
  */
 
 Tcl_HashEntry *
-Tcl_NextHashEntry(searchPtr)
-    register Tcl_HashSearch *searchPtr;	/* Place to store information about
-					 * progress through the table.  Must
-					 * have been initialized by calling
-					 * Tcl_FirstHashEntry. */
+Tcl_NextHashEntry(
+    register Tcl_HashSearch *searchPtr)
+				/* Place to store information about progress
+				 * through the table. Must have been
+				 * initialized by calling
+				 * Tcl_FirstHashEntry. */
 {
     Tcl_HashEntry *hPtr;
     Tcl_HashTable *tablePtr = searchPtr->tablePtr;
@@ -751,13 +620,12 @@ Tcl_NextHashEntry(searchPtr)
  *
  * Tcl_HashStats --
  *
- *	Return statistics describing the layout of the hash table
- *	in its hash buckets.
+ *	Return statistics describing the layout of the hash table in its hash
+ *	buckets.
  *
  * Results:
- *	The return value is a malloc-ed string containing information
- *	about tablePtr.  It is the caller's responsibility to free
- *	this string.
+ *	The return value is a malloc-ed string containing information about
+ *	tablePtr. It is the caller's responsibility to free this string.
  *
  * Side effects:
  *	None.
@@ -766,14 +634,26 @@ Tcl_NextHashEntry(searchPtr)
  */
 
 char *
-Tcl_HashStats(tablePtr)
-    Tcl_HashTable *tablePtr;		/* Table for which to produce stats. */
+Tcl_HashStats(
+    Tcl_HashTable *tablePtr)	/* Table for which to produce stats. */
 {
 #define NUM_COUNTERS 10
     int count[NUM_COUNTERS], overflow, i, j;
     double average, tmp;
     register Tcl_HashEntry *hPtr;
     char *result, *p;
+    const Tcl_HashKeyType *typePtr;
+
+    if (tablePtr->keyType == TCL_STRING_KEYS) {
+	typePtr = &tclStringHashKeyType;
+    } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
+	typePtr = &tclOneWordHashKeyType;
+    } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
+	    || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
+	typePtr = tablePtr->typePtr;
+    } else {
+	typePtr = &tclArrayHashKeyType;
+    }
 
     /*
      * Compute a histogram of bucket usage.
@@ -795,14 +675,20 @@ Tcl_HashStats(tablePtr)
 	    overflow++;
 	}
 	tmp = j;
-	average += (tmp+1.0)*(tmp/tablePtr->numEntries)/2.0;
+	if (tablePtr->numEntries != 0) {
+	    average += (tmp+1.0)*(tmp/tablePtr->numEntries)/2.0;
+	}
     }
 
     /*
      * Print out the histogram and a few other pieces of information.
      */
 
-    result = (char *) ckalloc((unsigned) ((NUM_COUNTERS*60) + 300));
+    if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
+	result = (char *) TclpSysAlloc((unsigned) (NUM_COUNTERS*60) + 300, 0);
+    } else {
+	result = (char *) ckalloc((unsigned) (NUM_COUNTERS*60) + 300);
+    }
     sprintf(result, "%d entries in table, %d buckets\n",
 	    tablePtr->numEntries, tablePtr->numBuckets);
     p = result + strlen(result);
@@ -835,9 +721,9 @@ Tcl_HashStats(tablePtr)
  */
 
 static Tcl_HashEntry *
-AllocArrayEntry(tablePtr, keyPtr)
-    Tcl_HashTable *tablePtr;	/* Hash table. */
-    VOID *keyPtr;		/* Key to store in the hash table entry. */
+AllocArrayEntry(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    VOID *keyPtr)		/* Key to store in the hash table entry. */
 {
     int *array = (int *) keyPtr;
     register int *iPtr1, *iPtr2;
@@ -848,14 +734,16 @@ AllocArrayEntry(tablePtr, keyPtr)
     count = tablePtr->keyType;
 
     size = sizeof(Tcl_HashEntry) + (count*sizeof(int)) - sizeof(hPtr->key);
-    if (size < sizeof(Tcl_HashEntry))
+    if (size < sizeof(Tcl_HashEntry)) {
 	size = sizeof(Tcl_HashEntry);
+    }
     hPtr = (Tcl_HashEntry *) ckalloc(size);
 
     for (iPtr1 = array, iPtr2 = hPtr->key.words;
 	    count > 0; count--, iPtr1++, iPtr2++) {
 	*iPtr2 = *iPtr1;
     }
+    hPtr->clientData = 0;
 
     return hPtr;
 }
@@ -868,8 +756,8 @@ AllocArrayEntry(tablePtr, keyPtr)
  *	Compares two array keys.
  *
  * Results:
- *	The return value is 0 if they are different and 1 if they are
- *	the same.
+ *	The return value is 0 if they are different and 1 if they are the
+ *	same.
  *
  * Side effects:
  *	None.
@@ -878,12 +766,12 @@ AllocArrayEntry(tablePtr, keyPtr)
  */
 
 static int
-CompareArrayKeys(keyPtr, hPtr)
-    VOID *keyPtr;		/* New key to compare. */
-    Tcl_HashEntry *hPtr;	/* Existing key to compare. */
+CompareArrayKeys(
+    VOID *keyPtr,		/* New key to compare. */
+    Tcl_HashEntry *hPtr)	/* Existing key to compare. */
 {
-    register CONST int *iPtr1 = (CONST int *) keyPtr;
-    register CONST int *iPtr2 = (CONST int *) hPtr->key.words;
+    register const int *iPtr1 = (const int *) keyPtr;
+    register const int *iPtr2 = (const int *) hPtr->key.words;
     Tcl_HashTable *tablePtr = hPtr->tablePtr;
     int count;
 
@@ -903,8 +791,8 @@ CompareArrayKeys(keyPtr, hPtr)
  *
  * HashArrayKey --
  *
- *	Compute a one-word summary of an array, which can be
- *	used to generate a hash index.
+ *	Compute a one-word summary of an array, which can be used to generate
+ *	a hash index.
  *
  * Results:
  *	The return value is a one-word summary of the information in
@@ -917,11 +805,11 @@ CompareArrayKeys(keyPtr, hPtr)
  */
 
 static unsigned int
-HashArrayKey(tablePtr, keyPtr)
-    Tcl_HashTable *tablePtr;	/* Hash table. */
-    VOID *keyPtr;		/* Key from which to compute hash value. */
+HashArrayKey(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    VOID *keyPtr)		/* Key from which to compute hash value. */
 {
-    register CONST int *array = (CONST int *) keyPtr;
+    register const int *array = (const int *) keyPtr;
     register unsigned int result;
     int count;
 
@@ -949,11 +837,11 @@ HashArrayKey(tablePtr, keyPtr)
  */
 
 static Tcl_HashEntry *
-AllocStringEntry(tablePtr, keyPtr)
-    Tcl_HashTable *tablePtr;	/* Hash table. */
-    VOID *keyPtr;		/* Key to store in the hash table entry. */
+AllocStringEntry(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    VOID *keyPtr)		/* Key to store in the hash table entry. */
 {
-    CONST char *string = (CONST char *) keyPtr;
+    const char *string = (const char *) keyPtr;
     Tcl_HashEntry *hPtr;
     unsigned int size, allocsize;
 
@@ -963,6 +851,7 @@ AllocStringEntry(tablePtr, keyPtr)
     }
     hPtr = (Tcl_HashEntry *) ckalloc(sizeof(Tcl_HashEntry) + allocsize - sizeof(hPtr->key));
     memcpy(hPtr->key.string, string, size);
+    hPtr->clientData = 0;
     return hPtr;
 }
 
@@ -974,8 +863,8 @@ AllocStringEntry(tablePtr, keyPtr)
  *	Compares two string keys.
  *
  * Results:
- *	The return value is 0 if they are different and 1 if they are
- *	the same.
+ *	The return value is 0 if they are different and 1 if they are the
+ *	same.
  *
  * Side effects:
  *	None.
@@ -984,22 +873,14 @@ AllocStringEntry(tablePtr, keyPtr)
  */
 
 static int
-CompareStringKeys(keyPtr, hPtr)
-    VOID *keyPtr;		/* New key to compare. */
-    Tcl_HashEntry *hPtr;		/* Existing key to compare. */
+CompareStringKeys(
+    VOID *keyPtr,		/* New key to compare. */
+    Tcl_HashEntry *hPtr)	/* Existing key to compare. */
 {
-    register CONST char *p1 = (CONST char *) keyPtr;
-    register CONST char *p2 = (CONST char *) hPtr->key.string;
+    register const char *p1 = (const char *) keyPtr;
+    register const char *p2 = (const char *) hPtr->key.string;
 
-    for (;; p1++, p2++) {
-	if (*p1 != *p2) {
-	    break;
-	}
-	if (*p1 == '\0') {
-	    return 1;
-	}
-    }
-    return 0;
+    return !strcmp(p1, p2);
 }
 
 /*
@@ -1007,12 +888,11 @@ CompareStringKeys(keyPtr, hPtr)
  *
  * HashStringKey --
  *
- *	Compute a one-word summary of a text string, which can be
- *	used to generate a hash index.
+ *	Compute a one-word summary of a text string, which can be used to
+ *	generate a hash index.
  *
  * Results:
- *	The return value is a one-word summary of the information in
- *	string.
+ *	The return value is a one-word summary of the information in string.
  *
  * Side effects:
  *	None.
@@ -1021,54 +901,49 @@ CompareStringKeys(keyPtr, hPtr)
  */
 
 static unsigned int
-HashStringKey(tablePtr, keyPtr)
-    Tcl_HashTable *tablePtr;	/* Hash table. */
-    VOID *keyPtr;		/* Key from which to compute hash value. */
+HashStringKey(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    VOID *keyPtr)		/* Key from which to compute hash value. */
 {
-    register CONST char *string = (CONST char *) keyPtr;
+    register const char *string = (const char *) keyPtr;
     register unsigned int result;
     register int c;
 
     /*
-     * I tried a zillion different hash functions and asked many other
-     * people for advice.  Many people had their own favorite functions,
-     * all different, but no-one had much idea why they were good ones.
-     * I chose the one below (multiply by 9 and add new character)
-     * because of the following reasons:
+     * I tried a zillion different hash functions and asked many other people
+     * for advice. Many people had their own favorite functions, all
+     * different, but no-one had much idea why they were good ones. I chose
+     * the one below (multiply by 9 and add new character) because of the
+     * following reasons:
      *
-     * 1. Multiplying by 10 is perfect for keys that are decimal strings,
-     *    and multiplying by 9 is just about as good.
-     * 2. Times-9 is (shift-left-3) plus (old).  This means that each
-     *    character's bits hang around in the low-order bits of the
-     *    hash value for ever, plus they spread fairly rapidly up to
-     *    the high-order bits to fill out the hash value.  This seems
-     *    works well both for decimal and non-decimal strings.
+     * 1. Multiplying by 10 is perfect for keys that are decimal strings, and
+     *	  multiplying by 9 is just about as good.
+     * 2. Times-9 is (shift-left-3) plus (old). This means that each
+     *	  character's bits hang around in the low-order bits of the hash value
+     *	  for ever, plus they spread fairly rapidly up to the high-order bits
+     *	  to fill out the hash value. This seems works well both for decimal
+     *	  and non-decimal strings, but isn't strong against maliciously-chosen
+     *	  keys.
      */
 
     result = 0;
-    while (1) {
-	c = *string;
-	if (c == 0) {
-	    break;
-	}
+
+    for (c=*string++ ; c ; c=*string++) {
 	result += (result<<3) + c;
-	string++;
     }
     return result;
 }
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
 /*
  *----------------------------------------------------------------------
  *
  * BogusFind --
  *
- *	This procedure is invoked when an Tcl_FindHashEntry is called
- *	on a table that has been deleted.
+ *	This function is invoked when an Tcl_FindHashEntry is called on a
+ *	table that has been deleted.
  *
  * Results:
- *	If panic returns (which it shouldn't) this procedure returns
- *	NULL.
+ *	If Tcl_Panic returns (which it shouldn't) this function returns NULL.
  *
  * Side effects:
  *	Generates a panic.
@@ -1078,11 +953,11 @@ HashStringKey(tablePtr, keyPtr)
 
 	/* ARGSUSED */
 static Tcl_HashEntry *
-BogusFind(tablePtr, key)
-    Tcl_HashTable *tablePtr;	/* Table in which to lookup entry. */
-    CONST char *key;		/* Key to use to find matching entry. */
+BogusFind(
+    Tcl_HashTable *tablePtr,	/* Table in which to lookup entry. */
+    const char *key)		/* Key to use to find matching entry. */
 {
-    panic("called Tcl_FindHashEntry on deleted table");
+    Tcl_Panic("called %s on deleted table", "Tcl_FindHashEntry");
     return NULL;
 }
 
@@ -1091,12 +966,11 @@ BogusFind(tablePtr, key)
  *
  * BogusCreate --
  *
- *	This procedure is invoked when an Tcl_CreateHashEntry is called
- *	on a table that has been deleted.
+ *	This function is invoked when an Tcl_CreateHashEntry is called on a
+ *	table that has been deleted.
  *
  * Results:
- *	If panic returns (which it shouldn't) this procedure returns
- *	NULL.
+ *	If panic returns (which it shouldn't) this function returns NULL.
  *
  * Side effects:
  *	Generates a panic.
@@ -1106,59 +980,72 @@ BogusFind(tablePtr, key)
 
 	/* ARGSUSED */
 static Tcl_HashEntry *
-BogusCreate(tablePtr, key, newPtr)
-    Tcl_HashTable *tablePtr;	/* Table in which to lookup entry. */
-    CONST char *key;		/* Key to use to find or create matching
+BogusCreate(
+    Tcl_HashTable *tablePtr,	/* Table in which to lookup entry. */
+    const char *key,		/* Key to use to find or create matching
 				 * entry. */
-    int *newPtr;		/* Store info here telling whether a new
-				 * entry was created. */
+    int *newPtr)		/* Store info here telling whether a new entry
+				 * was created. */
 {
-    panic("called Tcl_CreateHashEntry on deleted table");
+    Tcl_Panic("called %s on deleted table", "Tcl_CreateHashEntry");
     return NULL;
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
  *
  * RebuildTable --
  *
- *	This procedure is invoked when the ratio of entries to hash
- *	buckets becomes too large.  It creates a new table with a
- *	larger bucket array and moves all of the entries into the
- *	new table.
+ *	This function is invoked when the ratio of entries to hash buckets
+ *	becomes too large. It creates a new table with a larger bucket array
+ *	and moves all of the entries into the new table.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Memory gets reallocated and entries get re-hashed to new
- *	buckets.
+ *	Memory gets reallocated and entries get re-hashed to new buckets.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-RebuildTable(tablePtr)
-    register Tcl_HashTable *tablePtr;	/* Table to enlarge. */
+RebuildTable(
+    register Tcl_HashTable *tablePtr)	/* Table to enlarge. */
 {
     int oldSize, count, index;
     Tcl_HashEntry **oldBuckets;
     register Tcl_HashEntry **oldChainPtr, **newChainPtr;
     register Tcl_HashEntry *hPtr;
-    Tcl_HashKeyType *typePtr;
+    const Tcl_HashKeyType *typePtr;
+
+    if (tablePtr->keyType == TCL_STRING_KEYS) {
+	typePtr = &tclStringHashKeyType;
+    } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
+	typePtr = &tclOneWordHashKeyType;
+    } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
+	    || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
+	typePtr = tablePtr->typePtr;
+    } else {
+	typePtr = &tclArrayHashKeyType;
+    }
 
     oldSize = tablePtr->numBuckets;
     oldBuckets = tablePtr->buckets;
 
     /*
-     * Allocate and initialize the new bucket array, and set up
-     * hashing constants for new array size.
+     * Allocate and initialize the new bucket array, and set up hashing
+     * constants for new array size.
      */
 
     tablePtr->numBuckets *= 4;
-    tablePtr->buckets = (Tcl_HashEntry **) ckalloc((unsigned)
-	    (tablePtr->numBuckets * sizeof(Tcl_HashEntry *)));
+    if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
+	tablePtr->buckets = (Tcl_HashEntry **) TclpSysAlloc((unsigned)
+		(tablePtr->numBuckets * sizeof(Tcl_HashEntry *)), 0);
+    } else {
+	tablePtr->buckets = (Tcl_HashEntry **) ckalloc((unsigned)
+		(tablePtr->numBuckets * sizeof(Tcl_HashEntry *)));
+    }
     for (count = tablePtr->numBuckets, newChainPtr = tablePtr->buckets;
 	    count > 0; count--, newChainPtr++) {
 	*newChainPtr = NULL;
@@ -1167,21 +1054,6 @@ RebuildTable(tablePtr)
     tablePtr->downShift -= 2;
     tablePtr->mask = (tablePtr->mask << 2) + 3;
 
-#if TCL_PRESERVE_BINARY_COMPATABILITY
-    if (tablePtr->keyType == TCL_STRING_KEYS) {
-	typePtr = &tclStringHashKeyType;
-    } else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
-	typePtr = &tclOneWordHashKeyType;
-    } else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
-	       || tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
-	typePtr = tablePtr->typePtr;
-    } else {
-	typePtr = &tclArrayHashKeyType;
-    }
-#else
-    typePtr = tablePtr->typePtr;
-#endif
-
     /*
      * Rehash all of the existing entries into the new bucket array.
      */
@@ -1189,21 +1061,22 @@ RebuildTable(tablePtr)
     for (oldChainPtr = oldBuckets; oldSize > 0; oldSize--, oldChainPtr++) {
 	for (hPtr = *oldChainPtr; hPtr != NULL; hPtr = *oldChainPtr) {
 	    *oldChainPtr = hPtr->nextPtr;
-
 #if TCL_HASH_KEY_STORE_HASH
 	    if (typePtr->hashKeyProc == NULL
-		|| typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
-		index = RANDOM_INDEX (tablePtr, hPtr->hash);
+		    || typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
+		index = RANDOM_INDEX (tablePtr, PTR2UINT(hPtr->hash));
 	    } else {
-		index = ((unsigned int) hPtr->hash) & tablePtr->mask;
+		index = PTR2UINT(hPtr->hash) & tablePtr->mask;
 	    }
 	    hPtr->nextPtr = tablePtr->buckets[index];
 	    tablePtr->buckets[index] = hPtr;
 #else
-	    VOID *key = (VOID *) Tcl_GetHashKey (tablePtr, hPtr);
+	    VOID *key = (VOID *) Tcl_GetHashKey(tablePtr, hPtr);
+
 	    if (typePtr->hashKeyProc) {
 		unsigned int hash;
-		hash = typePtr->hashKeyProc (tablePtr, (VOID *) key);
+
+		hash = typePtr->hashKeyProc(tablePtr, key);
 		if (typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
 		    index = RANDOM_INDEX (tablePtr, hash);
 		} else {
@@ -1225,6 +1098,18 @@ RebuildTable(tablePtr)
      */
 
     if (oldBuckets != tablePtr->staticBuckets) {
-	ckfree((char *) oldBuckets);
+	if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
+	    TclpSysFree((char *) oldBuckets);
+	} else {
+	    ckfree((char *) oldBuckets);
+	}
     }
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclHistory.c b/generic/tclHistory.c
index 9ff3f49..a23e102 100644
--- a/generic/tclHistory.c
+++ b/generic/tclHistory.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * tclHistory.c --
  *
  *	This module and the Tcl library file history.tcl together implement
@@ -9,13 +9,11 @@
  * Copyright (c) 1990-1993 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
-
 
 /*
  *----------------------------------------------------------------------
@@ -23,8 +21,7 @@
  * Tcl_RecordAndEval --
  *
  *	This procedure adds its command argument to the current list of
- *	recorded events and then executes the command by calling
- *	Tcl_Eval.
+ *	recorded events and then executes the command by calling Tcl_Eval.
  *
  * Results:
  *	The return value is a standard Tcl return value, the result of
@@ -37,12 +34,12 @@
  */
 
 int
-Tcl_RecordAndEval(interp, cmd, flags)
-    Tcl_Interp *interp;		/* Token for interpreter in which command
-				 * will be executed. */
-    CONST char *cmd;		/* Command to record. */
-    int flags;			/* Additional flags.  TCL_NO_EVAL means
-				 * only record: don't execute command.
+Tcl_RecordAndEval(
+    Tcl_Interp *interp,		/* Token for interpreter in which command will
+				 * be executed. */
+    CONST char *cmd,		/* Command to record. */
+    int flags)			/* Additional flags. TCL_NO_EVAL means only
+				 * record: don't execute command.
 				 * TCL_EVAL_GLOBAL means use Tcl_GlobalEval
 				 * instead of Tcl_Eval. */
 {
@@ -60,18 +57,17 @@ Tcl_RecordAndEval(interp, cmd, flags)
 	result = Tcl_RecordAndEvalObj(interp, cmdPtr, flags);
 
 	/*
-	 * Move the interpreter's object result to the string result, 
-	 * then reset the object result.
+	 * Move the interpreter's object result to the string result, then
+	 * reset the object result.
 	 */
 
-	Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	        TCL_VOLATILE);
+	(void) Tcl_GetStringResult(interp);
 
 	/*
 	 * Discard the Tcl object created to hold the command.
 	 */
-	
-	Tcl_DecrRefCount(cmdPtr);	
+
+	Tcl_DecrRefCount(cmdPtr);
     } else {
 	/*
 	 * An empty string. Just reset the interpreter's result.
@@ -103,33 +99,56 @@ Tcl_RecordAndEval(interp, cmd, flags)
  */
 
 int
-Tcl_RecordAndEvalObj(interp, cmdPtr, flags)
-    Tcl_Interp *interp;		/* Token for interpreter in which command
-				 * will be executed. */
-    Tcl_Obj *cmdPtr;		/* Points to object holding the command to
+Tcl_RecordAndEvalObj(
+    Tcl_Interp *interp,		/* Token for interpreter in which command will
+				 * be executed. */
+    Tcl_Obj *cmdPtr,		/* Points to object holding the command to
 				 * record and execute. */
-    int flags;			/* Additional flags. TCL_NO_EVAL means
-				 * record only: don't execute the command.
-				 * TCL_EVAL_GLOBAL means evaluate the
-				 * script in global variable context instead
-				 * of the current procedure. */
+    int flags)			/* Additional flags. TCL_NO_EVAL means record
+				 * only: don't execute the command.
+				 * TCL_EVAL_GLOBAL means evaluate the script
+				 * in global variable context instead of the
+				 * current procedure. */
 {
-    int result;
+    int result, call = 1;
     Tcl_Obj *list[3];
     register Tcl_Obj *objPtr;
+    Tcl_CmdInfo info;
 
     /*
-     * Do recording by eval'ing a tcl history command: history add $cmd.
+     * Do not call [history] if it has been replaced by an empty proc
      */
 
-    list[0] = Tcl_NewStringObj("history", -1);
-    list[1] = Tcl_NewStringObj("add", -1);
-    list[2] = cmdPtr;
-    
-    objPtr = Tcl_NewListObj(3, list);
-    Tcl_IncrRefCount(objPtr);
-    (void) Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_GLOBAL);
-    Tcl_DecrRefCount(objPtr);
+    result = Tcl_GetCommandInfo(interp, "history", &info);
+
+    if (result && (info.objProc == TclObjInterpProc)) {
+	Proc *procPtr = (Proc *)(info.objClientData);
+	call = (procPtr->cmdPtr->compileProc != TclCompileNoOp);
+    }
+
+    if (call) {
+
+	/*
+	 * Do recording by eval'ing a tcl history command: history add $cmd. 
+	 */
+
+	TclNewLiteralStringObj(list[0], "history");
+	TclNewLiteralStringObj(list[1], "add");
+	list[2] = cmdPtr;
+	
+	objPtr = Tcl_NewListObj(3, list);
+	Tcl_IncrRefCount(objPtr);
+	(void) Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_GLOBAL);
+	Tcl_DecrRefCount(objPtr);
+	
+	/*
+	 * One possible failure mode above: exceeding a resource limit.
+	 */
+	
+	if (Tcl_LimitExceeded(interp)) {
+	    return TCL_ERROR;
+	}
+    }
 
     /*
      * Execute the command.
@@ -141,3 +160,11 @@ Tcl_RecordAndEvalObj(interp, cmdPtr, flags)
     }
     return result;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclIO.c b/generic/tclIO.c
index c18d02e..b16bdbb 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * tclIO.c --
  *
  *	This file provides the generic portions (those that are the same on
@@ -7,20 +7,14 @@
  * Copyright (c) 1998-2000 Ajuba Solutions
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 #include "tclIO.h"
 #include <assert.h>
 
-#ifndef TCL_INHERIT_STD_CHANNELS
-#define TCL_INHERIT_STD_CHANNELS 1
-#endif
-
-
 /*
  * For each channel handler registered in a call to Tcl_CreateChannelHandler,
  * there is one record of the following type. All of records for a specific
@@ -115,7 +109,7 @@ typedef struct CopyState {
     int readFlags;		/* Original read channel flags. */
     int writeFlags;		/* Original write channel flags. */
     int toRead;			/* Number of bytes to copy, or -1. */
-    int total;			/* Total bytes transferred (written). */
+    Tcl_WideInt total;		/* Total bytes transferred (written). */
     Tcl_Interp *interp;		/* Interp that started the copy. */
     Tcl_Obj *cmdPtr;		/* Command to be invoked at completion. */
     int bufSize;		/* Size of appended buffer. */
@@ -124,49 +118,29 @@ typedef struct CopyState {
 } CopyState;
 
 /*
- * All static variables used in this file are collected into a single
- * instance of the following structure.  For multi-threaded implementations,
- * there is one instance of this structure for each thread.
+ * All static variables used in this file are collected into a single instance
+ * of the following structure. For multi-threaded implementations, there is
+ * one instance of this structure for each thread.
  *
- * Notice that different structures with the same name appear in other
- * files.  The structure defined below is used in this file only.
+ * Notice that different structures with the same name appear in other files.
+ * The structure defined below is used in this file only.
  */
 
 typedef struct ThreadSpecificData {
-
-    /*
-     * This variable holds the list of nested ChannelHandlerEventProc 
-     * invocations.
-     */
     NextChannelHandler *nestedHandlerPtr;
-
-    /*
-     * List of all channels currently open, indexed by ChannelState,
-     * as only one ChannelState exists per set of stacked channels.
-     */
-    ChannelState *firstCSPtr;
-#ifdef oldcode
-    /*
-     * Has a channel exit handler been created yet?
-     */
-    int channelExitHandlerCreated;
-
-    /*
-     * Has the channel event source been created and registered with the
-     * notifier?
-     */
-    int channelEventSourceCreated;
-#endif
-    /*
-     * Static variables to hold channels for stdin, stdout and stderr.
-     */
-    Tcl_Channel stdinChannel;
+				/* This variable holds the list of nested
+				 * ChannelHandlerEventProc invocations. */
+    ChannelState *firstCSPtr;	/* List of all channels currently open,
+				 * indexed by ChannelState, as only one
+				 * ChannelState exists per set of stacked
+				 * channels. */
+    Tcl_Channel stdinChannel;	/* Static variable for the stdin channel. */
     int stdinInitialized;
-    Tcl_Channel stdoutChannel;
+    Tcl_Channel stdoutChannel;	/* Static variable for the stdout channel. */
     int stdoutInitialized;
-    Tcl_Channel stderrChannel;
+    Tcl_Channel stderrChannel;	/* Static variable for the stderr channel. */
     int stderrInitialized;
-
+    Tcl_Encoding binaryEncoding;
 } ThreadSpecificData;
 
 static Tcl_ThreadDataKey dataKey;
@@ -187,86 +161,181 @@ typedef struct CloseCallback {
  * Static functions in this file:
  */
 
-static ChannelBuffer *	AllocChannelBuffer _ANSI_ARGS_((int length));
-static void		ChannelTimerProc _ANSI_ARGS_((
-				ClientData clientData));
-static int		CheckChannelErrors _ANSI_ARGS_((ChannelState *statePtr,
-				int direction));
-static int		CheckFlush _ANSI_ARGS_((Channel *chanPtr,
-				ChannelBuffer *bufPtr, int newlineFlag));
-static int		CheckForDeadChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				ChannelState *statePtr));
-static void		CheckForStdChannelsBeingClosed _ANSI_ARGS_((
-				Tcl_Channel chan));
-static void		CleanupChannelHandlers _ANSI_ARGS_((
-				Tcl_Interp *interp, Channel *chanPtr));
-static int		CloseChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				Channel *chanPtr, int errorCode));
-static void		CommonGetsCleanup _ANSI_ARGS_((Channel *chanPtr,
-				Tcl_Encoding encoding));
-static int		CopyAndTranslateBuffer _ANSI_ARGS_((
-				ChannelState *statePtr, char *result,
-				int space));
-static int		CopyBuffer _ANSI_ARGS_((
-				Channel *chanPtr, char *result, int space));
-static int		CopyData _ANSI_ARGS_((CopyState *csPtr, int mask));
-static void		CopyEventProc _ANSI_ARGS_((ClientData clientData,
-				int mask));
-static void		CreateScriptRecord _ANSI_ARGS_((
-				Tcl_Interp *interp, Channel *chanPtr,
-				int mask, Tcl_Obj *scriptPtr));
-static void		DeleteChannelTable _ANSI_ARGS_((
-				ClientData clientData, Tcl_Interp *interp));
-static void		DeleteScriptRecord _ANSI_ARGS_((Tcl_Interp *interp,
-				Channel *chanPtr, int mask));
-static int              DetachChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
-static void		DiscardInputQueued _ANSI_ARGS_((ChannelState *statePtr,
-				int discardSavedBuffers));
-static void		DiscardOutputQueued _ANSI_ARGS_((
-				ChannelState *chanPtr));
-static int		DoRead _ANSI_ARGS_((Channel *chanPtr, char *srcPtr,
-				int slen));
-static int		DoWrite _ANSI_ARGS_((Channel *chanPtr, CONST char *src,
-				int srcLen));
-static int		DoReadChars _ANSI_ARGS_ ((Channel* chan,
-				Tcl_Obj* objPtr, int toRead, int appendFlag));
-static int		DoWriteChars _ANSI_ARGS_ ((Channel* chan,
-				CONST char* src, int len));
-static int		FilterInputBytes _ANSI_ARGS_((Channel *chanPtr,
-				GetsState *statePtr));
-static int		FlushChannel _ANSI_ARGS_((Tcl_Interp *interp,
-				Channel *chanPtr, int calledFromAsyncFlush));
-static Tcl_HashTable *	GetChannelTable _ANSI_ARGS_((Tcl_Interp *interp));
-static int		GetInput _ANSI_ARGS_((Channel *chanPtr));
-static int		HaveVersion _ANSI_ARGS_((Tcl_ChannelType *typePtr,
-				Tcl_ChannelTypeVersion minimumVersion));
-static void		PeekAhead _ANSI_ARGS_((Channel *chanPtr,
-				char **dstEndPtr, GetsState *gsPtr));
-static int		ReadBytes _ANSI_ARGS_((ChannelState *statePtr,
-				Tcl_Obj *objPtr, int charsLeft,
-				int *offsetPtr));
-static int		ReadChars _ANSI_ARGS_((ChannelState *statePtr,
-				Tcl_Obj *objPtr, int charsLeft,
-				int *offsetPtr, int *factorPtr));
-static void		RecycleBuffer _ANSI_ARGS_((ChannelState *statePtr,
-				ChannelBuffer *bufPtr, int mustDiscard));
-static int		StackSetBlockMode _ANSI_ARGS_((Channel *chanPtr,
-				int mode));
-static int		SetBlockMode _ANSI_ARGS_((Tcl_Interp *interp,
-				Channel *chanPtr, int mode));
-static void		StopCopy _ANSI_ARGS_((CopyState *csPtr));
-static int		TranslateInputEOL _ANSI_ARGS_((ChannelState *statePtr,
-				char *dst, CONST char *src,
-				int *dstLenPtr, int *srcLenPtr));
-static int		TranslateOutputEOL _ANSI_ARGS_((ChannelState *statePtr,
-				char *dst, CONST char *src,
-				int *dstLenPtr, int *srcLenPtr));
-static void		UpdateInterest _ANSI_ARGS_((Channel *chanPtr));
-static int		WriteBytes _ANSI_ARGS_((Channel *chanPtr,
-				CONST char *src, int srcLen));
-static int		WriteChars _ANSI_ARGS_((Channel *chanPtr,
-				CONST char *src, int srcLen));
+static ChannelBuffer *	AllocChannelBuffer(int length);
+static void		ChannelTimerProc(ClientData clientData);
+static int		CheckChannelErrors(ChannelState *statePtr,
+			    int direction);
+static int		CheckFlush(Channel *chanPtr, ChannelBuffer *bufPtr,
+			    int newlineFlag);
+static int		CheckForDeadChannel(Tcl_Interp *interp,
+			    ChannelState *statePtr);
+static void		CheckForStdChannelsBeingClosed(Tcl_Channel chan);
+static void		CleanupChannelHandlers(Tcl_Interp *interp,
+			    Channel *chanPtr);
+static int		CloseChannel(Tcl_Interp *interp, Channel *chanPtr,
+			    int errorCode);
+static void		CommonGetsCleanup(Channel *chanPtr);
+static int		CopyAndTranslateBuffer(ChannelState *statePtr,
+			    char *result, int space);
+static int		CopyBuffer(Channel *chanPtr, char *result, int space);
+static int		CopyData(CopyState *csPtr, int mask);
+static void		CopyEventProc(ClientData clientData, int mask);
+static void		CreateScriptRecord(Tcl_Interp *interp,
+			    Channel *chanPtr, int mask, Tcl_Obj *scriptPtr);
+static void		DeleteChannelTable(ClientData clientData,
+			    Tcl_Interp *interp);
+static void		DeleteScriptRecord(Tcl_Interp *interp,
+			    Channel *chanPtr, int mask);
+static int		DetachChannel(Tcl_Interp *interp, Tcl_Channel chan);
+static void		DiscardInputQueued(ChannelState *statePtr,
+			    int discardSavedBuffers);
+static void		DiscardOutputQueued(ChannelState *chanPtr);
+static int		DoRead(Channel *chanPtr, char *srcPtr, int slen);
+static int		DoWrite(Channel *chanPtr, const char *src, int srcLen);
+static int		DoReadChars(Channel *chan, Tcl_Obj *objPtr, int toRead,
+			    int appendFlag);
+static int		DoWriteChars(Channel *chan, const char *src, int len);
+static int		FilterInputBytes(Channel *chanPtr,
+			    GetsState *statePtr);
+static int		FlushChannel(Tcl_Interp *interp, Channel *chanPtr,
+			    int calledFromAsyncFlush);
+static int		TclGetsObjBinary(Tcl_Channel chan, Tcl_Obj *objPtr);
+static void		FreeBinaryEncoding(ClientData clientData);
+static Tcl_HashTable *	GetChannelTable(Tcl_Interp *interp);
+static int		GetInput(Channel *chanPtr);
+static int		HaveVersion(const Tcl_ChannelType *typePtr,
+			    Tcl_ChannelTypeVersion minimumVersion);
+static void		PeekAhead(Channel *chanPtr, char **dstEndPtr,
+			    GetsState *gsPtr);
+static int		ReadBytes(ChannelState *statePtr, Tcl_Obj *objPtr,
+			    int charsLeft, int *offsetPtr);
+static int		ReadChars(ChannelState *statePtr, Tcl_Obj *objPtr,
+			    int charsLeft, int *offsetPtr, int *factorPtr);
+static void		RecycleBuffer(ChannelState *statePtr,
+			    ChannelBuffer *bufPtr, int mustDiscard);
+static int		StackSetBlockMode(Channel *chanPtr, int mode);
+static int		SetBlockMode(Tcl_Interp *interp, Channel *chanPtr,
+			    int mode);
+static void		StopCopy(CopyState *csPtr);
+static int		TranslateInputEOL(ChannelState *statePtr, char *dst,
+			    const char *src, int *dstLenPtr, int *srcLenPtr);
+static int		TranslateOutputEOL(ChannelState *statePtr, char *dst,
+			    const char *src, int *dstLenPtr, int *srcLenPtr);
+static void		UpdateInterest(Channel *chanPtr);
+static int		WriteBytes(Channel *chanPtr, const char *src,
+			    int srcLen);
+static int		WriteChars(Channel *chanPtr, const char *src,
+			    int srcLen);
+static Tcl_Obj *	FixLevelCode(Tcl_Obj *msg);
+static void		SpliceChannel(Tcl_Channel chan);
+static void		CutChannel(Tcl_Channel chan);
+
+/*
+ * Simplifying helper macros. All may use their argument(s) multiple times.
+ * The ANSI C "prototypes" for the macros are listed below, together with a
+ * short description of what the macro does.
+ *
+ * --------------------------------------------------------------------------
+ * int BytesLeft(ChannelBuffer *bufPtr)
+ *
+ *	Returns the number of bytes of data remaining in the buffer.
+ *
+ * int SpaceLeft(ChannelBuffer *bufPtr)
+ *
+ *	Returns the number of bytes of space remaining at the end of the
+ *	buffer.
+ *
+ * int IsBufferReady(ChannelBuffer *bufPtr)
+ *
+ *	Returns whether a buffer has bytes available within it.
+ *
+ * int IsBufferEmpty(ChannelBuffer *bufPtr)
+ *
+ *	Returns whether a buffer is entirely empty. Note that this is not the
+ *	inverse of the above operation; trying to merge the two seems to lead
+ *	to occasional crashes...
+ *
+ * int IsBufferFull(ChannelBuffer *bufPtr)
+ *
+ *	Returns whether more data can be added to a buffer.
+ *
+ * int IsBufferOverflowing(ChannelBuffer *bufPtr)
+ *
+ *	Returns whether a buffer has more data in it than it should.
+ *
+ * char *InsertPoint(ChannelBuffer *bufPtr)
+ *
+ *	Returns a pointer to where characters should be added to the buffer.
+ *
+ * char *RemovePoint(ChannelBuffer *bufPtr)
+ *
+ *	Returns a pointer to where characters should be removed from the
+ *	buffer.
+ * --------------------------------------------------------------------------
+ */
+
+#define BytesLeft(bufPtr) ((bufPtr)->nextAdded - (bufPtr)->nextRemoved)
+
+#define SpaceLeft(bufPtr) ((bufPtr)->bufLength - (bufPtr)->nextAdded)
+
+#define IsBufferReady(bufPtr) ((bufPtr)->nextAdded > (bufPtr)->nextRemoved)
+
+#define IsBufferEmpty(bufPtr) ((bufPtr)->nextAdded == (bufPtr)->nextRemoved)
+
+#define IsBufferFull(bufPtr) ((bufPtr)->nextAdded >= (bufPtr)->bufLength)
+
+#define IsBufferOverflowing(bufPtr) ((bufPtr)->nextAdded > (bufPtr)->bufLength)
+
+#define InsertPoint(bufPtr) ((bufPtr)->buf + (bufPtr)->nextAdded)
+
+#define RemovePoint(bufPtr) ((bufPtr)->buf + (bufPtr)->nextRemoved)
+
+/*
+ * For working with channel state flag bits.
+ */
+
+#define SetFlag(statePtr, flag)		((statePtr)->flags |= (flag))
+#define ResetFlag(statePtr, flag)	((statePtr)->flags &= ~(flag))
+
+/*
+ * Macro for testing whether a string (in optionName, length len) matches a
+ * value (prefix matching rules). Arguments are the minimum length to match
+ * and the value to match against. (Can't use Tcl_GetIndexFromObj as this is
+ * used in a situation where no objects are available.)
+ */
+
+#define HaveOpt(minLength, nameString) \
+	((len > (minLength)) && (optionName[1] == (nameString)[1]) \
+		&& (strncmp(optionName, (nameString), len) == 0))
+
+/*
+ * The ChannelObjType type.  We actually store the ChannelState structure
+ * as that lives longest and we want to return the bottomChanPtr when
+ * requested (consistent with Tcl_GetChannel).  The setFromAny and
+ * updateString can be NULL as they should not be called.
+ */
+
+static void		DupChannelIntRep(Tcl_Obj *objPtr, Tcl_Obj *copyPtr);
+static int		SetChannelFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static void		UpdateStringOfChannel(Tcl_Obj *objPtr);
+static void		FreeChannelIntRep(Tcl_Obj *objPtr);
+
+static Tcl_ObjType tclChannelType = {
+    "channel",			/* name for this type */
+    FreeChannelIntRep,		/* freeIntRepProc */
+    DupChannelIntRep,		/* dupIntRepProc */
+    NULL,			/* updateStringProc UpdateStringOfChannel */
+    NULL			/* setFromAnyProc SetChannelFromAny */
+};
+
+#define GET_CHANNELSTATE(objPtr) \
+    ((ChannelState *) (objPtr)->internalRep.twoPtrValue.ptr1)
+#define SET_CHANNELSTATE(objPtr, storePtr) \
+    ((objPtr)->internalRep.twoPtrValue.ptr1 = (void *) (storePtr))
+#define GET_CHANNELINTERP(objPtr) \
+    ((Interp *) (objPtr)->internalRep.twoPtrValue.ptr2)
+#define SET_CHANNELINTERP(objPtr, storePtr) \
+    ((objPtr)->internalRep.twoPtrValue.ptr2 = (void *) (storePtr))
 
 #define BUSY_STATE(st,fl) \
      ((((st)->csPtrR) && ((fl) & TCL_READABLE)) || \
@@ -280,7 +349,7 @@ static int		WriteChars _ANSI_ARGS_((Channel *chanPtr,
  * TclInitIOSubsystem --
  *
  *	Initialize all resources used by this subsystem on a per-process
- *	basis.  
+ *	basis.
  *
  * Results:
  *	None.
@@ -292,23 +361,24 @@ static int		WriteChars _ANSI_ARGS_((Channel *chanPtr,
  */
 
 void
-TclInitIOSubsystem()
+TclInitIOSubsystem(void)
 {
     /*
-     * By fetching thread local storage we take care of
-     * allocating it for each thread.
+     * By fetching thread local storage we take care of allocating it for each
+     * thread.
      */
+
     (void) TCL_TSD_INIT(&dataKey);
-}   
+}
 
 /*
  *-------------------------------------------------------------------------
  *
  * TclFinalizeIOSubsystem --
  *
- *	Releases all resources used by this subsystem on a per-thread
- *	basis.  Closes all extant channels that have not already been 
- *	closed because they were not owned by any interp.  
+ *	Releases all resources used by this subsystem on a per-process basis.
+ *	Closes all extant channels that have not already been closed because
+ *	they were not owned by any interp.
  *
  * Results:
  *	None.
@@ -329,23 +399,21 @@ TclFinalizeIOSubsystem(void)
     int active = 1;		/* Flag == 1 while there's still work to do */
 
     /*
-     * Walk all channel state structures known to this thread and
-     * close corresponding channels.
+     * Walk all channel state structures known to this thread and close
+     * corresponding channels.
      */
 
     while (active) {
-
 	/*
-	 * Iterate through the open channel list, and find the first
-	 * channel that isn't dead. We start from the head of the list
-	 * each time, because the close action on one channel can close
-	 * others.
+	 * Iterate through the open channel list, and find the first channel
+	 * that isn't dead. We start from the head of the list each time,
+	 * because the close action on one channel can close others.
 	 */
 
 	active = 0;
 	for (statePtr = tsdPtr->firstCSPtr;
-	     statePtr != NULL;
-	     statePtr = statePtr->nextCSPtr) {
+		statePtr != NULL;
+		statePtr = statePtr->nextCSPtr) {
 	    chanPtr = statePtr->topChanPtr;
 	    if (!(statePtr->flags & (CHANNEL_INCLOSE|CHANNEL_CLOSED|CHANNEL_DEAD))) {
 		active = 1;
@@ -354,67 +422,65 @@ TclFinalizeIOSubsystem(void)
 	}
 
 	/*
-	 * We've found a live channel.  Close it.
+	 * We've found a live channel. Close it.
 	 */
 
 	if (active) {
-
 	    /*
-	     * Set the channel back into blocking mode to ensure that we 
-	     * wait for all data to flush out.
+	     * Set the channel back into blocking mode to ensure that we wait
+	     * for all data to flush out.
 	     */
-	    
+
 	    (void) Tcl_SetChannelOption(NULL, (Tcl_Channel) chanPtr,
-					"-blocking", "on");
-	    
+		    "-blocking", "on");
+
 	    if ((chanPtr == (Channel *) tsdPtr->stdinChannel) ||
-		(chanPtr == (Channel *) tsdPtr->stdoutChannel) ||
-		(chanPtr == (Channel *) tsdPtr->stderrChannel)) {
+		    (chanPtr == (Channel *) tsdPtr->stdoutChannel) ||
+		    (chanPtr == (Channel *) tsdPtr->stderrChannel)) {
 		/*
-		 * Decrement the refcount which was earlier artificially 
+		 * Decrement the refcount which was earlier artificially
 		 * bumped up to keep the channel from being closed.
 		 */
-		
+
 		statePtr->refCount--;
 	    }
-	    
+
 	    if (statePtr->refCount <= 0) {
 		/*
-		 * Close it only if the refcount indicates that the channel 
-		 * is not referenced from any interpreter. If it is, that
+		 * Close it only if the refcount indicates that the channel is
+		 * not referenced from any interpreter. If it is, that
 		 * interpreter will close the channel when it gets destroyed.
 		 */
-		
+
 		(void) Tcl_Close(NULL, (Tcl_Channel) chanPtr);
 	    } else {
 		/*
 		 * The refcount is greater than zero, so flush the channel.
 		 */
-		
+
 		Tcl_Flush((Tcl_Channel) chanPtr);
-		
+
 		/*
-		 * Call the device driver to actually close the underlying 
+		 * Call the device driver to actually close the underlying
 		 * device for this channel.
 		 */
-		
+
 		if (chanPtr->typePtr->closeProc != TCL_CLOSE2PROC) {
 		    (chanPtr->typePtr->closeProc)(chanPtr->instanceData, NULL);
 		} else {
 		    (chanPtr->typePtr->close2Proc)(chanPtr->instanceData,
-						   NULL, 0);
+			    NULL, 0);
 		}
-		
+
 		/*
-		 * Finally, we clean up the fields in the channel data 
-		 * structure since all of them have been deleted already. 
-		 * We mark the channel with CHANNEL_DEAD to prevent any 
-		 * further IO operations
-		 * on it.
+		 * Finally, we clean up the fields in the channel data
+		 * structure since all of them have been deleted already. We
+		 * mark the channel with CHANNEL_DEAD to prevent any further
+		 * IO operations on it.
 		 */
-		
+
 		chanPtr->instanceData = NULL;
-		statePtr->flags |= CHANNEL_DEAD;
+		SetFlag(statePtr, CHANNEL_DEAD);
 	    }
 	}
     }
@@ -422,15 +488,14 @@ TclFinalizeIOSubsystem(void)
     TclpFinalizeSockets();
     TclpFinalizePipes();
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_SetStdChannel --
  *
- *	This function is used to change the channels that are used
- *	for stdin/stdout/stderr in new interpreters.
+ *	This function is used to change the channels that are used for
+ *	stdin/stdout/stderr in new interpreters.
  *
  * Results:
  *	None
@@ -442,24 +507,24 @@ TclFinalizeIOSubsystem(void)
  */
 
 void
-Tcl_SetStdChannel(channel, type)
-    Tcl_Channel channel;
-    int type;			/* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
+Tcl_SetStdChannel(
+    Tcl_Channel channel,
+    int type)			/* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     switch (type) {
-	case TCL_STDIN:
-	    tsdPtr->stdinInitialized = 1;
-	    tsdPtr->stdinChannel = channel;
-	    break;
-	case TCL_STDOUT:
-	    tsdPtr->stdoutInitialized = 1;
-	    tsdPtr->stdoutChannel = channel;
-	    break;
-	case TCL_STDERR:
-	    tsdPtr->stderrInitialized = 1;
-	    tsdPtr->stderrChannel = channel;
-	    break;
+    case TCL_STDIN:
+	tsdPtr->stdinInitialized = 1;
+	tsdPtr->stdinChannel = channel;
+	break;
+    case TCL_STDOUT:
+	tsdPtr->stdoutInitialized = 1;
+	tsdPtr->stdoutChannel = channel;
+	break;
+    case TCL_STDERR:
+	tsdPtr->stderrInitialized = 1;
+	tsdPtr->stderrChannel = channel;
+	break;
     }
 }
 
@@ -474,71 +539,67 @@ Tcl_SetStdChannel(channel, type)
  *	Returns the specified standard channel, or NULL.
  *
  * Side effects:
- *	May cause the creation of a standard channel and the underlying
- *	file.
+ *	May cause the creation of a standard channel and the underlying file.
  *
  *----------------------------------------------------------------------
  */
+
 Tcl_Channel
-Tcl_GetStdChannel(type)
-    int type;			/* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
+Tcl_GetStdChannel(
+    int type)			/* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
 {
     Tcl_Channel channel = NULL;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     /*
-     * If the channels were not created yet, create them now and
-     * store them in the static variables. 
+     * If the channels were not created yet, create them now and store them in
+     * the static variables.
      */
 
     switch (type) {
-	case TCL_STDIN:
-	    if (!tsdPtr->stdinInitialized) {
-		tsdPtr->stdinChannel = TclpGetDefaultStdChannel(TCL_STDIN);
-		tsdPtr->stdinInitialized = 1;
+    case TCL_STDIN:
+	if (!tsdPtr->stdinInitialized) {
+	    tsdPtr->stdinChannel = TclpGetDefaultStdChannel(TCL_STDIN);
+	    tsdPtr->stdinInitialized = 1;
 
-		/*
-                 * Artificially bump the refcount to ensure that the channel
-                 * is only closed on exit.
-                 *
-                 * NOTE: Must only do this if stdinChannel is not NULL. It
-                 * can be NULL in situations where Tcl is unable to connect
-                 * to the standard input.
-                 */
-
-                if (tsdPtr->stdinChannel != (Tcl_Channel) NULL) {
-                    (void) Tcl_RegisterChannel((Tcl_Interp *) NULL,
-                            tsdPtr->stdinChannel);
-                }
-	    }
-	    channel = tsdPtr->stdinChannel;
-	    break;
-	case TCL_STDOUT:
-	    if (!tsdPtr->stdoutInitialized) {
-		tsdPtr->stdoutChannel = TclpGetDefaultStdChannel(TCL_STDOUT);
-		tsdPtr->stdoutInitialized = 1;
-                if (tsdPtr->stdoutChannel != (Tcl_Channel) NULL) {
-                    (void) Tcl_RegisterChannel((Tcl_Interp *) NULL,
-                            tsdPtr->stdoutChannel);
-                }
-	    }
-	    channel = tsdPtr->stdoutChannel;
-	    break;
-	case TCL_STDERR:
-	    if (!tsdPtr->stderrInitialized) {
-		tsdPtr->stderrChannel = TclpGetDefaultStdChannel(TCL_STDERR);
-		tsdPtr->stderrInitialized = 1;
-                if (tsdPtr->stderrChannel != (Tcl_Channel) NULL) {
-                    (void) Tcl_RegisterChannel((Tcl_Interp *) NULL,
-                            tsdPtr->stderrChannel);
-                }
-	    }
-	    channel = tsdPtr->stderrChannel;
-	    break;
+	    /*
+	     * Artificially bump the refcount to ensure that the channel is
+	     * only closed on exit.
+	     *
+	     * NOTE: Must only do this if stdinChannel is not NULL. It can be
+	     * NULL in situations where Tcl is unable to connect to the
+	     * standard input.
+	     */
+
+	    if (tsdPtr->stdinChannel != NULL) {
+		Tcl_RegisterChannel(NULL, tsdPtr->stdinChannel);
+	    }
+	}
+	channel = tsdPtr->stdinChannel;
+	break;
+    case TCL_STDOUT:
+	if (!tsdPtr->stdoutInitialized) {
+	    tsdPtr->stdoutChannel = TclpGetDefaultStdChannel(TCL_STDOUT);
+	    tsdPtr->stdoutInitialized = 1;
+	    if (tsdPtr->stdoutChannel != NULL) {
+		Tcl_RegisterChannel(NULL, tsdPtr->stdoutChannel);
+	    }
+	}
+	channel = tsdPtr->stdoutChannel;
+	break;
+    case TCL_STDERR:
+	if (!tsdPtr->stderrInitialized) {
+	    tsdPtr->stderrChannel = TclpGetDefaultStdChannel(TCL_STDERR);
+	    tsdPtr->stderrInitialized = 1;
+	    if (tsdPtr->stderrChannel != NULL) {
+		Tcl_RegisterChannel(NULL, tsdPtr->stderrChannel);
+	    }
+	}
+	channel = tsdPtr->stderrChannel;
+	break;
     }
     return channel;
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -552,27 +613,27 @@ Tcl_GetStdChannel(type)
  *	None.
  *
  * Side effects:
- *	Causes the callback to be called in the future when the channel
- *	will be closed.
+ *	Causes the callback to be called in the future when the channel will
+ *	be closed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_CreateCloseHandler(chan, proc, clientData)
-    Tcl_Channel chan;		/* The channel for which to create the
-                                 * close callback. */
-    Tcl_CloseProc *proc;	/* The callback routine to call when the
-                                 * channel will be closed. */
-    ClientData clientData;	/* Arbitrary data to pass to the
-                                 * close callback. */
+Tcl_CreateCloseHandler(
+    Tcl_Channel chan,		/* The channel for which to create the close
+				 * callback. */
+    Tcl_CloseProc *proc,	/* The callback routine to call when the
+				 * channel will be closed. */
+    ClientData clientData)	/* Arbitrary data to pass to the close
+				 * callback. */
 {
     ChannelState *statePtr;
     CloseCallback *cbPtr;
 
     statePtr = ((Channel *) chan)->state;
 
-    cbPtr = (CloseCallback *) ckalloc((unsigned) sizeof(CloseCallback));
+    cbPtr = (CloseCallback *) ckalloc(sizeof(CloseCallback));
     cbPtr->proc = proc;
     cbPtr->clientData = clientData;
 
@@ -585,47 +646,45 @@ Tcl_CreateCloseHandler(chan, proc, clientData)
  *
  * Tcl_DeleteCloseHandler --
  *
- *	Removes a callback that would have been called on closing
- *	the channel. If there is no matching callback then this
- *	function has no effect.
+ *	Removes a callback that would have been called on closing the channel.
+ *	If there is no matching callback then this function has no effect.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The callback will not be called in the future when the channel
- *	is eventually closed.
+ *	The callback will not be called in the future when the channel is
+ *	eventually closed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteCloseHandler(chan, proc, clientData)
-    Tcl_Channel chan;		/* The channel for which to cancel the
-                                 * close callback. */
-    Tcl_CloseProc *proc;	/* The procedure for the callback to
-                                 * remove. */
-    ClientData clientData;	/* The callback data for the callback
-                                 * to remove. */
+Tcl_DeleteCloseHandler(
+    Tcl_Channel chan,		/* The channel for which to cancel the close
+				 * callback. */
+    Tcl_CloseProc *proc,	/* The procedure for the callback to
+				 * remove. */
+    ClientData clientData)	/* The callback data for the callback to
+				 * remove. */
 {
     ChannelState *statePtr;
     CloseCallback *cbPtr, *cbPrevPtr;
 
     statePtr = ((Channel *) chan)->state;
-    for (cbPtr = statePtr->closeCbPtr, cbPrevPtr = (CloseCallback *) NULL;
-	 cbPtr != (CloseCallback *) NULL;
-	 cbPtr = cbPtr->nextPtr) {
-        if ((cbPtr->proc == proc) && (cbPtr->clientData == clientData)) {
-            if (cbPrevPtr == (CloseCallback *) NULL) {
-                statePtr->closeCbPtr = cbPtr->nextPtr;
+    for (cbPtr = statePtr->closeCbPtr, cbPrevPtr = NULL;
+	    cbPtr != NULL; cbPtr = cbPtr->nextPtr) {
+	if ((cbPtr->proc == proc) && (cbPtr->clientData == clientData)) {
+	    if (cbPrevPtr == NULL) {
+		statePtr->closeCbPtr = cbPtr->nextPtr;
 	    } else {
 		cbPrevPtr->nextPtr = cbPtr->nextPtr;
-            }
-            ckfree((char *) cbPtr);
-            break;
-        } else {
-            cbPrevPtr = cbPtr;
-        }
+	    }
+	    ckfree((char *) cbPtr);
+	    break;
+	} else {
+	    cbPrevPtr = cbPtr;
+	}
     }
 }
 
@@ -634,58 +693,53 @@ Tcl_DeleteCloseHandler(chan, proc, clientData)
  *
  * GetChannelTable --
  *
- *	Gets and potentially initializes the channel table for an
- *	interpreter. If it is initializing the table it also inserts
- *	channels for stdin, stdout and stderr if the interpreter is
- *	trusted.
+ *	Gets and potentially initializes the channel table for an interpreter.
+ *	If it is initializing the table it also inserts channels for stdin,
+ *	stdout and stderr if the interpreter is trusted.
  *
  * Results:
  *	A pointer to the hash table created, for use by the caller.
  *
  * Side effects:
- *	Initializes the channel table for an interpreter. May create
- *	channels for stdin, stdout and stderr.
+ *	Initializes the channel table for an interpreter. May create channels
+ *	for stdin, stdout and stderr.
  *
  *----------------------------------------------------------------------
  */
 
 static Tcl_HashTable *
-GetChannelTable(interp)
-    Tcl_Interp *interp;
+GetChannelTable(
+    Tcl_Interp *interp)
 {
     Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
     Tcl_Channel stdinChan, stdoutChan, stderrChan;
 
-    hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
-    if (hTblPtr == (Tcl_HashTable *) NULL) {
-        hTblPtr = (Tcl_HashTable *) ckalloc((unsigned) sizeof(Tcl_HashTable));
-        Tcl_InitHashTable(hTblPtr, TCL_STRING_KEYS);
-
-        (void) Tcl_SetAssocData(interp, "tclIO",
-                (Tcl_InterpDeleteProc *) DeleteChannelTable,
-                (ClientData) hTblPtr);
-
-        /*
-         * If the interpreter is trusted (not "safe"), insert channels
-         * for stdin, stdout and stderr (possibly creating them in the
-         * process).
-         */
-
-        if (Tcl_IsSafe(interp) == 0) {
-            stdinChan = Tcl_GetStdChannel(TCL_STDIN);
-            if (stdinChan != NULL) {
-                Tcl_RegisterChannel(interp, stdinChan);
-            }
-            stdoutChan = Tcl_GetStdChannel(TCL_STDOUT);
-            if (stdoutChan != NULL) {
-                Tcl_RegisterChannel(interp, stdoutChan);
-            }
-            stderrChan = Tcl_GetStdChannel(TCL_STDERR);
-            if (stderrChan != NULL) {
-                Tcl_RegisterChannel(interp, stderrChan);
-            }
-        }
+    hTblPtr = Tcl_GetAssocData(interp, "tclIO", NULL);
+    if (hTblPtr == NULL) {
+	hTblPtr = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+	Tcl_InitHashTable(hTblPtr, TCL_STRING_KEYS);
+	Tcl_SetAssocData(interp, "tclIO",
+		(Tcl_InterpDeleteProc *) DeleteChannelTable, hTblPtr);
 
+	/*
+	 * If the interpreter is trusted (not "safe"), insert channels for
+	 * stdin, stdout and stderr (possibly creating them in the process).
+	 */
+
+	if (Tcl_IsSafe(interp) == 0) {
+	    stdinChan = Tcl_GetStdChannel(TCL_STDIN);
+	    if (stdinChan != NULL) {
+		Tcl_RegisterChannel(interp, stdinChan);
+	    }
+	    stdoutChan = Tcl_GetStdChannel(TCL_STDOUT);
+	    if (stdoutChan != NULL) {
+		Tcl_RegisterChannel(interp, stdoutChan);
+	    }
+	    stderrChan = Tcl_GetStdChannel(TCL_STDERR);
+	    if (stderrChan != NULL) {
+		Tcl_RegisterChannel(interp, stderrChan);
+	    }
+	}
     }
     return hTblPtr;
 }
@@ -696,9 +750,8 @@ GetChannelTable(interp)
  * DeleteChannelTable --
  *
  *	Deletes the channel table for an interpreter, closing any open
- *	channels whose refcount reaches zero. This procedure is invoked
- *	when an interpreter is deleted, via the AssocData cleanup
- *	mechanism.
+ *	channels whose refcount reaches zero. This procedure is invoked when
+ *	an interpreter is deleted, via the AssocData cleanup mechanism.
  *
  * Results:
  *	None.
@@ -712,9 +765,9 @@ GetChannelTable(interp)
  */
 
 static void
-DeleteChannelTable(clientData, interp)
-    ClientData clientData;	/* The per-interpreter data structure. */
-    Tcl_Interp *interp;		/* The interpreter being deleted. */
+DeleteChannelTable(
+    ClientData clientData,	/* The per-interpreter data structure. */
+    Tcl_Interp *interp)		/* The interpreter being deleted. */
 {
     Tcl_HashTable *hTblPtr;	/* The hash table. */
     Tcl_HashSearch hSearch;	/* Search variable. */
@@ -722,63 +775,61 @@ DeleteChannelTable(clientData, interp)
     Channel *chanPtr;		/* Channel being deleted. */
     ChannelState *statePtr;	/* State of Channel being deleted. */
     EventScriptRecord *sPtr, *prevPtr, *nextPtr;
-    				/* Variables to loop over all channel events
-                                 * registered, to delete the ones that refer
-                                 * to the interpreter being deleted. */
+				/* Variables to loop over all channel events
+				 * registered, to delete the ones that refer
+				 * to the interpreter being deleted. */
 
     /*
      * Delete all the registered channels - this will close channels whose
      * refcount reaches zero.
      */
-    
-    hTblPtr = (Tcl_HashTable *) clientData;
-    for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-	 hPtr != (Tcl_HashEntry *) NULL;
-	 hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch)) {
 
-        chanPtr = (Channel *) Tcl_GetHashValue(hPtr);
+    hTblPtr = clientData;
+    for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch); hPtr != NULL;
+	    hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch)) {
+	chanPtr = Tcl_GetHashValue(hPtr);
 	statePtr = chanPtr->state;
 
-        /*
-         * Remove any fileevents registered in this interpreter.
-         */
-        
-        for (sPtr = statePtr->scriptRecordPtr,
-                 prevPtr = (EventScriptRecord *) NULL;
-	     sPtr != (EventScriptRecord *) NULL;
-	     sPtr = nextPtr) {
-            nextPtr = sPtr->nextPtr;
-            if (sPtr->interp == interp) {
-                if (prevPtr == (EventScriptRecord *) NULL) {
-                    statePtr->scriptRecordPtr = nextPtr;
-                } else {
-                    prevPtr->nextPtr = nextPtr;
-                }
-
-                Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
-                        TclChannelEventScriptInvoker, (ClientData) sPtr);
-
-		Tcl_DecrRefCount(sPtr->scriptPtr);
-                ckfree((char *) sPtr);
-            } else {
-                prevPtr = sPtr;
-            }
-        }
-
-        /*
-         * Cannot call Tcl_UnregisterChannel because that procedure calls
-         * Tcl_GetAssocData to get the channel table, which might already
-         * be inaccessible from the interpreter structure. Instead, we
-         * emulate the behavior of Tcl_UnregisterChannel directly here.
-         */
-
-        Tcl_DeleteHashEntry(hPtr);
-        statePtr->refCount--;
-        if (statePtr->refCount <= 0) {
-            if (!(statePtr->flags & BG_FLUSH_SCHEDULED)) {
-                (void) Tcl_Close(interp, (Tcl_Channel) chanPtr);
-            }
-        }
+	/*
+	 * Remove any fileevents registered in this interpreter.
+	 */
+
+	for (sPtr = statePtr->scriptRecordPtr, prevPtr = NULL;
+		sPtr != NULL; sPtr = nextPtr) {
+	    nextPtr = sPtr->nextPtr;
+	    if (sPtr->interp == interp) {
+		if (prevPtr == NULL) {
+		    statePtr->scriptRecordPtr = nextPtr;
+		} else {
+		    prevPtr->nextPtr = nextPtr;
+		}
+
+		Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
+			TclChannelEventScriptInvoker, (ClientData) sPtr);
+
+		TclDecrRefCount(sPtr->scriptPtr);
+		ckfree((char *) sPtr);
+	    } else {
+		prevPtr = sPtr;
+	    }
+	}
+
+	/*
+	 * Cannot call Tcl_UnregisterChannel because that procedure calls
+	 * Tcl_GetAssocData to get the channel table, which might already be
+	 * inaccessible from the interpreter structure. Instead, we emulate
+	 * the behavior of Tcl_UnregisterChannel directly here.
+	 */
+
+	Tcl_DeleteHashEntry(hPtr);
+	SetFlag(statePtr, CHANNEL_TAINTED);
+	statePtr->refCount--;
+	if (statePtr->refCount <= 0) {
+	    if (!(statePtr->flags & BG_FLUSH_SCHEDULED)) {
+		(void) Tcl_Close(interp, (Tcl_Channel) chanPtr);
+	    }
+	}
+
     }
     Tcl_DeleteHashTable(hTblPtr);
     ckfree((char *) hTblPtr);
@@ -790,11 +841,11 @@ DeleteChannelTable(clientData, interp)
  * CheckForStdChannelsBeingClosed --
  *
  *	Perform special handling for standard channels being closed. When
- *	given a standard channel, if the refcount is now 1, it means that
- *	the last reference to the standard channel is being explicitly
- *	closed. Now bump the refcount artificially down to 0, to ensure the
- *	normal handling of channels being closed will occur. Also reset the
- *	static pointer to the channel to NULL, to avoid dangling references.
+ *	given a standard channel, if the refcount is now 1, it means that the
+ *	last reference to the standard channel is being explicitly closed. Now
+ *	bump the refcount artificially down to 0, to ensure the normal
+ *	handling of channels being closed will occur. Also reset the static
+ *	pointer to the channel to NULL, to avoid dangling references.
  *
  * Results:
  *	None.
@@ -807,8 +858,8 @@ DeleteChannelTable(clientData, interp)
  */
 
 static void
-CheckForStdChannelsBeingClosed(chan)
-    Tcl_Channel chan;
+CheckForStdChannelsBeingClosed(
+    Tcl_Channel chan)
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -845,27 +896,28 @@ CheckForStdChannelsBeingClosed(chan)
  *
  * Tcl_IsStandardChannel --
  *
- *	Test if the given channel is a standard channel.  No attempt
- *	is made to check if the channel or the standard channels
- *	are initialized or otherwise valid.
+ *	Test if the given channel is a standard channel. No attempt is made to
+ *	check if the channel or the standard channels are initialized or
+ *	otherwise valid.
  *
  * Results:
  *	Returns 1 if true, 0 if false.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
-int 
-Tcl_IsStandardChannel(chan)
-    Tcl_Channel chan;		/* Channel to check. */
+
+int
+Tcl_IsStandardChannel(
+    Tcl_Channel chan)		/* Channel to check. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
-    if ((chan == tsdPtr->stdinChannel) 
-	|| (chan == tsdPtr->stdoutChannel)
-	|| (chan == tsdPtr->stderrChannel)) {
+    if ((chan == tsdPtr->stdinChannel)
+	    || (chan == tsdPtr->stdoutChannel)
+	    || (chan == tsdPtr->stderrChannel)) {
 	return 1;
     } else {
 	return 0;
@@ -878,8 +930,8 @@ Tcl_IsStandardChannel(chan)
  * Tcl_RegisterChannel --
  *
  *	Adds an already-open channel to the channel table of an interpreter.
- *	If the interpreter passed as argument is NULL, it only increments
- *	the channel refCount.
+ *	If the interpreter passed as argument is NULL, it only increments the
+ *	channel refCount.
  *
  * Results:
  *	None.
@@ -891,41 +943,41 @@ Tcl_IsStandardChannel(chan)
  */
 
 void
-Tcl_RegisterChannel(interp, chan)
-    Tcl_Interp *interp;		/* Interpreter in which to add the channel. */
-    Tcl_Channel chan;		/* The channel to add to this interpreter
-                                 * channel table. */
+Tcl_RegisterChannel(
+    Tcl_Interp *interp,		/* Interpreter in which to add the channel. */
+    Tcl_Channel chan)		/* The channel to add to this interpreter
+				 * channel table. */
 {
     Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
     Tcl_HashEntry *hPtr;	/* Search variable. */
-    int new;			/* Is the hash entry new or does it exist? */
+    int isNew;			/* Is the hash entry new or does it exist? */
     Channel *chanPtr;		/* The actual channel. */
     ChannelState *statePtr;	/* State of the actual channel. */
 
     /*
-     * Always (un)register bottom-most channel in the stack.  This makes
+     * Always (un)register bottom-most channel in the stack. This makes
      * management of the channel list easier because no manipulation is
      * necessary during (un)stack operation.
      */
+
     chanPtr = ((Channel *) chan)->state->bottomChanPtr;
     statePtr = chanPtr->state;
 
-    if (statePtr->channelName == (CONST char *) NULL) {
-        panic("Tcl_RegisterChannel: channel without name");
+    if (statePtr->channelName == NULL) {
+	Tcl_Panic("Tcl_RegisterChannel: channel without name");
     }
-    if (interp != (Tcl_Interp *) NULL) {
-        hTblPtr = GetChannelTable(interp);
-        hPtr = Tcl_CreateHashEntry(hTblPtr, statePtr->channelName, &new);
-        if (new == 0) {
-            if (chan == (Tcl_Channel) Tcl_GetHashValue(hPtr)) {
-                return;
-            }
+    if (interp != NULL) {
+	hTblPtr = GetChannelTable(interp);
+	hPtr = Tcl_CreateHashEntry(hTblPtr, statePtr->channelName, &isNew);
+	if (!isNew) {
+	    if (chan == Tcl_GetHashValue(hPtr)) {
+		return;
+	    }
 
-	    panic("Tcl_RegisterChannel: duplicate channel names");
-        }
-        Tcl_SetHashValue(hPtr, (ClientData) chanPtr);
+	    Tcl_Panic("Tcl_RegisterChannel: duplicate channel names");
+	}
+	Tcl_SetHashValue(hPtr, chanPtr);
     }
-
     statePtr->refCount++;
 }
 
@@ -936,19 +988,19 @@ Tcl_RegisterChannel(interp, chan)
  *
  *	Deletes the hash entry for a channel associated with an interpreter.
  *	If the interpreter given as argument is NULL, it only decrements the
- *	reference count.  (This all happens in the Tcl_DetachChannel helper
+ *	reference count. (This all happens in the Tcl_DetachChannel helper
  *	function).
- *	
- *	Finally, if the reference count of the channel drops to zero,
- *	it is deleted.
+ *
+ *	Finally, if the reference count of the channel drops to zero, it is
+ *	deleted.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Calls Tcl_DetachChannel which deletes the hash entry for a channel 
+ *	Calls Tcl_DetachChannel which deletes the hash entry for a channel
  *	associated with an interpreter.
- *	
+ *
  *	May delete the channel, which can have a variety of consequences,
  *	especially if we are forced to close the channel.
  *
@@ -956,27 +1008,26 @@ Tcl_RegisterChannel(interp, chan)
  */
 
 int
-Tcl_UnregisterChannel(interp, chan)
-    Tcl_Interp *interp;		/* Interpreter in which channel is defined. */
-    Tcl_Channel chan;		/* Channel to delete. */
+Tcl_UnregisterChannel(
+    Tcl_Interp *interp,		/* Interpreter in which channel is defined. */
+    Tcl_Channel chan)		/* Channel to delete. */
 {
     ChannelState *statePtr;	/* State of the real channel. */
 
     statePtr = ((Channel *) chan)->state->bottomChanPtr->state;
- 
+
     if (statePtr->flags & CHANNEL_INCLOSE) {
-        if (interp != (Tcl_Interp*) NULL) {
-	    Tcl_AppendResult(interp, 
-	     "Illegal recursive call to close through close-handler of channel",
-	     (char *) NULL);
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "Illegal recursive call to close "
+		    "through close-handler of channel", NULL);
 	}
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
- 
+
     if (DetachChannel(interp, chan) != TCL_OK) {
-        return TCL_OK;
+	return TCL_OK;
     }
-    
+
     statePtr = ((Channel *) chan)->state->bottomChanPtr->state;
 
     /*
@@ -994,29 +1045,30 @@ Tcl_UnregisterChannel(interp, chan)
      */
 
     if (statePtr->refCount <= 0) {
+	/*
+	 * Ensure that if there is another buffer, it gets flushed whether or
+	 * not we are doing a background flush.
+	 */
 
-        /*
-         * Ensure that if there is another buffer, it gets flushed
-         * whether or not we are doing a background flush.
-         */
-
-        if ((statePtr->curOutPtr != NULL) &&
-                (statePtr->curOutPtr->nextAdded >
-                        statePtr->curOutPtr->nextRemoved)) {
-            statePtr->flags |= BUFFER_READY;
-        }
+	if ((statePtr->curOutPtr != NULL) &&
+		IsBufferReady(statePtr->curOutPtr)) {
+	    SetFlag(statePtr, BUFFER_READY);
+	}
 	Tcl_Preserve((ClientData)statePtr);
-        if (!(statePtr->flags & BG_FLUSH_SCHEDULED)) {
-	    /* We don't want to re-enter Tcl_Close */
+	if (!(statePtr->flags & BG_FLUSH_SCHEDULED)) {
+	    /*
+	     * We don't want to re-enter Tcl_Close().
+	     */
+
 	    if (!(statePtr->flags & CHANNEL_CLOSED)) {
 		if (Tcl_Close(interp, chan) != TCL_OK) {
-		    statePtr->flags |= CHANNEL_CLOSED;
+		    SetFlag(statePtr, CHANNEL_CLOSED);
 		    Tcl_Release((ClientData)statePtr);
 		    return TCL_ERROR;
 		}
 	    }
-        }
-        statePtr->flags |= CHANNEL_CLOSED;
+	}
+	SetFlag(statePtr, CHANNEL_CLOSED);
 	Tcl_Release((ClientData)statePtr);
     }
     return TCL_OK;
@@ -1029,45 +1081,42 @@ Tcl_UnregisterChannel(interp, chan)
  *
  *	Deletes the hash entry for a channel associated with an interpreter.
  *	If the interpreter given as argument is NULL, it only decrements the
- *	reference count.  Even if the ref count drops to zero, the 
- *	channel is NOT closed or cleaned up.  This allows a channel to
- *	be detached from an interpreter and left in the same state it
- *	was in when it was originally returned by 'Tcl_OpenFileChannel',
- *	for example.
- *	
- *	This function cannot be used on the standard channels, and
- *	will return TCL_ERROR if that is attempted.
- *	
- *	This function should only be necessary for special purposes
- *	in which you need to generate a pristine channel from one
- *	that has already been used.  All ordinary purposes will almost
- *	always want to use Tcl_UnregisterChannel instead.
- *	
- *	Provided the channel is not attached to any other interpreter,
- *	it can then be closed with Tcl_Close, rather than with 
- *	Tcl_UnregisterChannel.
+ *	reference count. Even if the ref count drops to zero, the channel is
+ *	NOT closed or cleaned up. This allows a channel to be detached from an
+ *	interpreter and left in the same state it was in when it was
+ *	originally returned by 'Tcl_OpenFileChannel', for example.
+ *
+ *	This function cannot be used on the standard channels, and will return
+ *	TCL_ERROR if that is attempted.
+ *
+ *	This function should only be necessary for special purposes in which
+ *	you need to generate a pristine channel from one that has already been
+ *	used. All ordinary purposes will almost always want to use
+ *	Tcl_UnregisterChannel instead.
+ *
+ *	Provided the channel is not attached to any other interpreter, it can
+ *	then be closed with Tcl_Close, rather than with Tcl_UnregisterChannel.
  *
  * Results:
- *	A standard Tcl result.  If the channel is not currently registered
- *	with the given interpreter, TCL_ERROR is returned, otherwise
- *	TCL_OK.  However no error messages are left in the interp's result.
+ *	A standard Tcl result. If the channel is not currently registered with
+ *	the given interpreter, TCL_ERROR is returned, otherwise TCL_OK.
+ *	However no error messages are left in the interp's result.
  *
  * Side effects:
- *	Deletes the hash entry for a channel associated with an 
- *	interpreter.
+ *	Deletes the hash entry for a channel associated with an interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_DetachChannel(interp, chan)
-    Tcl_Interp *interp;		/* Interpreter in which channel is defined. */
-    Tcl_Channel chan;		/* Channel to delete. */
+Tcl_DetachChannel(
+    Tcl_Interp *interp,		/* Interpreter in which channel is defined. */
+    Tcl_Channel chan)		/* Channel to delete. */
 {
     if (Tcl_IsStandardChannel(chan)) {
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    
+
     return DetachChannel(interp, chan);
 }
 
@@ -1078,28 +1127,26 @@ Tcl_DetachChannel(interp, chan)
  *
  *	Deletes the hash entry for a channel associated with an interpreter.
  *	If the interpreter given as argument is NULL, it only decrements the
- *	reference count.  Even if the ref count drops to zero, the 
- *	channel is NOT closed or cleaned up.  This allows a channel to
- *	be detached from an interpreter and left in the same state it
- *	was in when it was originally returned by 'Tcl_OpenFileChannel',
- *	for example.
+ *	reference count. Even if the ref count drops to zero, the channel is
+ *	NOT closed or cleaned up. This allows a channel to be detached from an
+ *	interpreter and left in the same state it was in when it was
+ *	originally returned by 'Tcl_OpenFileChannel', for example.
  *
  * Results:
- *	A standard Tcl result.  If the channel is not currently registered
- *	with the given interpreter, TCL_ERROR is returned, otherwise
- *	TCL_OK.  However no error messages are left in the interp's result.
+ *	A standard Tcl result. If the channel is not currently registered with
+ *	the given interpreter, TCL_ERROR is returned, otherwise TCL_OK.
+ *	However no error messages are left in the interp's result.
  *
  * Side effects:
- *	Deletes the hash entry for a channel associated with an 
- *	interpreter.
+ *	Deletes the hash entry for a channel associated with an interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-DetachChannel(interp, chan)
-    Tcl_Interp *interp;		/* Interpreter in which channel is defined. */
-    Tcl_Channel chan;		/* Channel to delete. */
+DetachChannel(
+    Tcl_Interp *interp,		/* Interpreter in which channel is defined. */
+    Tcl_Channel chan)		/* Channel to delete. */
 {
     Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
     Tcl_HashEntry *hPtr;	/* Search variable. */
@@ -1107,43 +1154,44 @@ DetachChannel(interp, chan)
     ChannelState *statePtr;	/* State of the real channel. */
 
     /*
-     * Always (un)register bottom-most channel in the stack.  This makes
+     * Always (un)register bottom-most channel in the stack. This makes
      * management of the channel list easier because no manipulation is
      * necessary during (un)stack operation.
      */
+
     chanPtr = ((Channel *) chan)->state->bottomChanPtr;
     statePtr = chanPtr->state;
 
-    if (interp != (Tcl_Interp *) NULL) {
-	hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
-	if (hTblPtr == (Tcl_HashTable *) NULL) {
+    if (interp != NULL) {
+	hTblPtr = Tcl_GetAssocData(interp, "tclIO", NULL);
+	if (hTblPtr == NULL) {
 	    return TCL_ERROR;
 	}
 	hPtr = Tcl_FindHashEntry(hTblPtr, statePtr->channelName);
-	if (hPtr == (Tcl_HashEntry *) NULL) {
+	if (hPtr == NULL) {
 	    return TCL_ERROR;
 	}
 	if ((Channel *) Tcl_GetHashValue(hPtr) != chanPtr) {
 	    return TCL_ERROR;
 	}
 	Tcl_DeleteHashEntry(hPtr);
+	SetFlag(statePtr, CHANNEL_TAINTED);
 
 	/*
-	 * Remove channel handlers that refer to this interpreter, so that they
-	 * will not be present if the actual close is delayed and more events
-	 * happen on the channel. This may occur if the channel is shared
-	 * between several interpreters, or if the channel has async
+	 * Remove channel handlers that refer to this interpreter, so that
+	 * they will not be present if the actual close is delayed and more
+	 * events happen on the channel. This may occur if the channel is
+	 * shared between several interpreters, or if the channel has async
 	 * flushing active.
 	 */
-    
+
 	CleanupChannelHandlers(interp, chanPtr);
     }
 
     statePtr->refCount--;
-    
+
     return TCL_OK;
 }
-
 
 /*
  *---------------------------------------------------------------------------
@@ -1155,9 +1203,9 @@ DetachChannel(interp, chan)
  *	channel-type-specific functions.
  *
  * Results:
- *	A Tcl_Channel or NULL on failure. If failed, interp's result
- *	object contains an error message.  *modePtr is filled with the
- *	modes in which the channel was opened.
+ *	A Tcl_Channel or NULL on failure. If failed, interp's result object
+ *	contains an error message. *modePtr is filled with the modes in which
+ *	the channel was opened.
  *
  * Side effects:
  *	None.
@@ -1166,26 +1214,26 @@ DetachChannel(interp, chan)
  */
 
 Tcl_Channel
-Tcl_GetChannel(interp, chanName, modePtr)
-    Tcl_Interp *interp;		/* Interpreter in which to find or create
-                                 * the channel. */
-    CONST char *chanName;	/* The name of the channel. */
-    int *modePtr;		/* Where to store the mode in which the
-                                 * channel was opened? Will contain an ORed
-                                 * combination of TCL_READABLE and
-                                 * TCL_WRITABLE, if non-NULL. */
+Tcl_GetChannel(
+    Tcl_Interp *interp,		/* Interpreter in which to find or create the
+				 * channel. */
+    const char *chanName,	/* The name of the channel. */
+    int *modePtr)		/* Where to store the mode in which the
+				 * channel was opened? Will contain an ORed
+				 * combination of TCL_READABLE and
+				 * TCL_WRITABLE, if non-NULL. */
 {
     Channel *chanPtr;		/* The actual channel. */
     Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
     Tcl_HashEntry *hPtr;	/* Search variable. */
-    CONST char *name;		/* Translated name. */
+    const char *name;		/* Translated name. */
 
     /*
-     * Substitute "stdin", etc.  Note that even though we immediately
-     * find the channel using Tcl_GetStdChannel, we still need to look
-     * it up in the specified interpreter to ensure that it is present
-     * in the channel table.  Otherwise, safe interpreters would always
-     * have access to the standard channels.
+     * Substitute "stdin", etc. Note that even though we immediately find the
+     * channel using Tcl_GetStdChannel, we still need to look it up in the
+     * specified interpreter to ensure that it is present in the channel
+     * table. Otherwise, safe interpreters would always have access to the
+     * standard channels.
      */
 
     name = chanName;
@@ -1205,57 +1253,104 @@ Tcl_GetChannel(interp, chanName, modePtr)
 
     hTblPtr = GetChannelTable(interp);
     hPtr = Tcl_FindHashEntry(hTblPtr, name);
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        Tcl_AppendResult(interp, "can not find channel named \"",
-                chanName, "\"", (char *) NULL);
-        return NULL;
+    if (hPtr == NULL) {
+	Tcl_AppendResult(interp, "can not find channel named \"", chanName,
+		"\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "CHANNEL", chanName, NULL);
+	return NULL;
     }
 
     /*
-     * Always return bottom-most channel in the stack.  This one lives
-     * the longest - other channels may go away unnoticed.
-     * The other APIs compensate where necessary to retrieve the
-     * topmost channel again.
+     * Always return bottom-most channel in the stack. This one lives the
+     * longest - other channels may go away unnoticed. The other APIs
+     * compensate where necessary to retrieve the topmost channel again.
      */
-    chanPtr = (Channel *) Tcl_GetHashValue(hPtr);
+
+    chanPtr = Tcl_GetHashValue(hPtr);
     chanPtr = chanPtr->state->bottomChanPtr;
     if (modePtr != NULL) {
-        *modePtr = (chanPtr->state->flags & (TCL_READABLE|TCL_WRITABLE));
+	*modePtr = (chanPtr->state->flags & (TCL_READABLE|TCL_WRITABLE));
     }
-    
+
     return (Tcl_Channel) chanPtr;
 }
 
 /*
+ *---------------------------------------------------------------------------
+ *
+ * TclGetChannelFromObj --
+ *
+ *	Finds an existing Tcl_Channel structure by name in a given
+ *	interpreter. This function is public because it is used by
+ *	channel-type-specific functions.
+ *
+ * Results:
+ *	A Tcl_Channel or NULL on failure. If failed, interp's result object
+ *	contains an error message. *modePtr is filled with the modes in which
+ *	the channel was opened.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclGetChannelFromObj(
+    Tcl_Interp *interp,		/* Interpreter in which to find or create the
+				 * channel. */
+    Tcl_Obj *objPtr,
+    Tcl_Channel *channelPtr,
+    int *modePtr,		/* Where to store the mode in which the
+				 * channel was opened? Will contain an ORed
+				 * combination of TCL_READABLE and
+				 * TCL_WRITABLE, if non-NULL. */
+    int flags)
+{
+    ChannelState *statePtr;
+
+    if (SetChannelFromAny(interp, objPtr) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    statePtr = GET_CHANNELSTATE(objPtr);
+    *channelPtr = (Tcl_Channel) (statePtr->bottomChanPtr);
+
+    if (modePtr != NULL) {
+	*modePtr = (statePtr->flags & (TCL_READABLE|TCL_WRITABLE));
+    }
+
+    return TCL_OK;
+}
+
+/*
  *----------------------------------------------------------------------
  *
  * Tcl_CreateChannel --
  *
- *	Creates a new entry in the hash table for a Tcl_Channel
- *	record.
+ *	Creates a new entry in the hash table for a Tcl_Channel record.
  *
  * Results:
  *	Returns the new Tcl_Channel.
  *
  * Side effects:
- *	Creates a new Tcl_Channel instance and inserts it into the
- *	hash table.
+ *	Creates a new Tcl_Channel instance and inserts it into the hash table.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Channel
-Tcl_CreateChannel(typePtr, chanName, instanceData, mask)
-    Tcl_ChannelType *typePtr;	/* The channel type record. */
-    CONST char *chanName;	/* Name of channel to record. */
-    ClientData instanceData;	/* Instance specific data. */
-    int mask;			/* TCL_READABLE & TCL_WRITABLE to indicate
-                                 * if the channel is readable, writable. */
+Tcl_CreateChannel(
+    Tcl_ChannelType *typePtr, /* The channel type record. */
+    const char *chanName,	/* Name of channel to record. */
+    ClientData instanceData,	/* Instance specific data. */
+    int mask)			/* TCL_READABLE & TCL_WRITABLE to indicate if
+				 * the channel is readable, writable. */
 {
     Channel *chanPtr;		/* The channel structure newly created. */
-    ChannelState *statePtr;	/* The stack-level independent state info
-				 * for the channel. */
-    CONST char *name;
+    ChannelState *statePtr;	/* The stack-level independent state info for
+				 * the channel. */
+    const char *name;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     /*
@@ -1263,59 +1358,67 @@ Tcl_CreateChannel(typePtr, chanName, instanceData, mask)
      * 8.3.2+, we have to make sure that our assumption that the structure
      * remains a binary compatible size is true.
      *
-     * If this assertion fails on some system, then it can be removed
-     * only if the user recompiles code with older channel drivers in
-     * the new system as well.
+     * If this assertion fails on some system, then it can be removed only if
+     * the user recompiles code with older channel drivers in the new system
+     * as well.
      */
 
     assert(sizeof(Tcl_ChannelTypeVersion) == sizeof(Tcl_DriverBlockModeProc*));
 
     /*
-     * JH: We could subsequently memset these to 0 to avoid the
-     * numerous assignments to 0/NULL below.
+     * JH: We could subsequently memset these to 0 to avoid the numerous
+     * assignments to 0/NULL below.
      */
-    chanPtr  = (Channel *) ckalloc((unsigned) sizeof(Channel));
-    statePtr = (ChannelState *) ckalloc((unsigned) sizeof(ChannelState));
+
+    chanPtr = (Channel *) ckalloc(sizeof(Channel));
+    statePtr = (ChannelState *) ckalloc(sizeof(ChannelState));
     chanPtr->state = statePtr;
 
-    chanPtr->instanceData	= instanceData;
-    chanPtr->typePtr		= typePtr;
+    chanPtr->instanceData = instanceData;
+    chanPtr->typePtr = typePtr;
 
     /*
      * Set all the bits that are part of the stack-independent state
      * information for the channel.
      */
 
-    if (chanName != (char *) NULL) {
+    if (chanName != NULL) {
 	char *tmp = ckalloc((unsigned) (strlen(chanName) + 1));
-        statePtr->channelName = tmp;
-        strcpy(tmp, chanName);
+
+	statePtr->channelName = tmp;
+	strcpy(tmp, chanName);
     } else {
-        panic("Tcl_CreateChannel: NULL channel name");
+	Tcl_Panic("Tcl_CreateChannel: NULL channel name");
     }
 
-    statePtr->flags		= mask;
+    statePtr->flags = mask;
 
     /*
      * Set the channel to system default encoding.
+     *
+     * Note the strange bit of protection taking place here. If the system
+     * encoding name is reported back as "binary", something weird is
+     * happening. Tcl provides no "binary" encoding, so someone else has
+     * provided one. We ignore it so as not to interfere with the "magic"
+     * interpretation that Tcl_Channels give to the "-encoding binary" option.
      */
 
     statePtr->encoding = NULL;
     name = Tcl_GetEncodingName(NULL);
     if (strcmp(name, "binary") != 0) {
-    	statePtr->encoding = Tcl_GetEncoding(NULL, name);
+	statePtr->encoding = Tcl_GetEncoding(NULL, name);
     }
-    statePtr->inputEncodingState	= NULL;
-    statePtr->inputEncodingFlags	= TCL_ENCODING_START;
-    statePtr->outputEncodingState	= NULL;
-    statePtr->outputEncodingFlags	= TCL_ENCODING_START;
+    statePtr->inputEncodingState  = NULL;
+    statePtr->inputEncodingFlags  = TCL_ENCODING_START;
+    statePtr->outputEncodingState = NULL;
+    statePtr->outputEncodingFlags = TCL_ENCODING_START;
 
     /*
-     * Set the channel up initially in AUTO input translation mode to
-     * accept "\n", "\r" and "\r\n". Output translation mode is set to
-     * a platform specific default value. The eofChar is set to 0 for both
-     * input and output, so that Tcl does not look for an in-file EOF
-     * indicator (e.g. ^Z) and does not append an EOF indicator to files.
+     * Set the channel up initially in AUTO input translation mode to accept
+     * "\n", "\r" and "\r\n". Output translation mode is set to a platform
+     * specific default value. The eofChar is set to 0 for both input and
+     * output, so that Tcl does not look for an in-file EOF indicator (e.g.
+     * ^Z) and does not append an EOF indicator to files.
      */
 
     statePtr->inputTranslation	= TCL_TRANSLATE_AUTO;
@@ -1325,16 +1428,16 @@ Tcl_CreateChannel(typePtr, chanName, instanceData, mask)
 
     statePtr->unreportedError	= 0;
     statePtr->refCount		= 0;
-    statePtr->closeCbPtr	= (CloseCallback *) NULL;
-    statePtr->curOutPtr		= (ChannelBuffer *) NULL;
-    statePtr->outQueueHead	= (ChannelBuffer *) NULL;
-    statePtr->outQueueTail	= (ChannelBuffer *) NULL;
-    statePtr->saveInBufPtr	= (ChannelBuffer *) NULL;
-    statePtr->inQueueHead	= (ChannelBuffer *) NULL;
-    statePtr->inQueueTail	= (ChannelBuffer *) NULL;
-    statePtr->chPtr		= (ChannelHandler *) NULL;
+    statePtr->closeCbPtr	= NULL;
+    statePtr->curOutPtr		= NULL;
+    statePtr->outQueueHead	= NULL;
+    statePtr->outQueueTail	= NULL;
+    statePtr->saveInBufPtr	= NULL;
+    statePtr->inQueueHead	= NULL;
+    statePtr->inQueueTail	= NULL;
+    statePtr->chPtr		= NULL;
     statePtr->interestMask	= 0;
-    statePtr->scriptRecordPtr	= (EventScriptRecord *) NULL;
+    statePtr->scriptRecordPtr	= NULL;
     statePtr->bufSize		= CHANNELBUFFER_DEFAULT_SIZE;
     statePtr->timer		= NULL;
     statePtr->csPtrR		= NULL;
@@ -1343,58 +1446,64 @@ Tcl_CreateChannel(typePtr, chanName, instanceData, mask)
     statePtr->outputStage	= NULL;
     if ((statePtr->encoding != NULL) && (statePtr->flags & TCL_WRITABLE)) {
 	statePtr->outputStage = (char *)
-	    ckalloc((unsigned) (statePtr->bufSize + 2));
+		ckalloc((unsigned) (statePtr->bufSize + 2));
     }
 
     /*
-     * As we are creating the channel, it is obviously the top for now
+     * As we are creating the channel, it is obviously the top for now.
      */
+
     statePtr->topChanPtr	= chanPtr;
     statePtr->bottomChanPtr	= chanPtr;
-    chanPtr->downChanPtr	= (Channel *) NULL;
-    chanPtr->upChanPtr		= (Channel *) NULL;
-    chanPtr->inQueueHead        = (ChannelBuffer*) NULL;
-    chanPtr->inQueueTail        = (ChannelBuffer*) NULL;
+    chanPtr->downChanPtr	= NULL;
+    chanPtr->upChanPtr		= NULL;
+    chanPtr->inQueueHead	= NULL;
+    chanPtr->inQueueTail	= NULL;
+
+    /*
+     * TIP #219, Tcl Channel Reflection API
+     */
+
+    statePtr->chanMsg		= NULL;
+    statePtr->unreportedMsg	= NULL;
 
     /*
      * Link the channel into the list of all channels; create an on-exit
-     * handler if there is not one already, to close off all the channels
-     * in the list on exit.
+     * handler if there is not one already, to close off all the channels in
+     * the list on exit.
      *
      * JH: Could call Tcl_SpliceChannel, but need to avoid NULL check.
      *
      * TIP #218.
      * AK: Just initialize the field to NULL before invoking Tcl_SpliceChannel
-     *     We need Tcl_SpliceChannel, for the threadAction calls.
-     *     There is no real reason to duplicate all of this.
+     *	   We need Tcl_SpliceChannel, for the threadAction calls. There is no
+     *	   real reason to duplicate all of this.
      * NOTE: All drivers using thread actions now have to perform their TSD
-     *       manipulation only in their thread action proc. Doing it when
-     *       creating their instance structures will collide with the thread
-     *       action activity and lead to damaged lists.
+     *	     manipulation only in their thread action proc. Doing it when
+     *	     creating their instance structures will collide with the thread
+     *	     action activity and lead to damaged lists.
      */
 
-    statePtr->nextCSPtr = (ChannelState *) NULL;
-    Tcl_SpliceChannel ((Tcl_Channel) chanPtr);
+    statePtr->nextCSPtr = NULL;
+    SpliceChannel((Tcl_Channel) chanPtr);
 
     /*
-     * Install this channel in the first empty standard channel slot, if
-     * the channel was previously closed explicitly.
+     * Install this channel in the first empty standard channel slot, if the
+     * channel was previously closed explicitly.
      */
-#if TCL_INHERIT_STD_CHANNELS
-    if ((tsdPtr->stdinChannel == NULL) &&
-	    (tsdPtr->stdinInitialized == 1)) {
+
+    if ((tsdPtr->stdinChannel == NULL) && (tsdPtr->stdinInitialized == 1)) {
 	Tcl_SetStdChannel((Tcl_Channel) chanPtr, TCL_STDIN);
-        Tcl_RegisterChannel((Tcl_Interp *) NULL, (Tcl_Channel) chanPtr);
+	Tcl_RegisterChannel(NULL, (Tcl_Channel) chanPtr);
     } else if ((tsdPtr->stdoutChannel == NULL) &&
 	    (tsdPtr->stdoutInitialized == 1)) {
 	Tcl_SetStdChannel((Tcl_Channel) chanPtr, TCL_STDOUT);
-        Tcl_RegisterChannel((Tcl_Interp *) NULL, (Tcl_Channel) chanPtr);
+	Tcl_RegisterChannel(NULL, (Tcl_Channel) chanPtr);
     } else if ((tsdPtr->stderrChannel == NULL) &&
 	    (tsdPtr->stderrInitialized == 1)) {
 	Tcl_SetStdChannel((Tcl_Channel) chanPtr, TCL_STDERR);
-        Tcl_RegisterChannel((Tcl_Interp *) NULL, (Tcl_Channel) chanPtr);
+	Tcl_RegisterChannel(NULL, (Tcl_Channel) chanPtr);
     }
-#endif
     return (Tcl_Channel) chanPtr;
 }
 
@@ -1403,53 +1512,52 @@ Tcl_CreateChannel(typePtr, chanName, instanceData, mask)
  *
  * Tcl_StackChannel --
  *
- *	Replaces an entry in the hash table for a Tcl_Channel
- *	record. The replacement is a new channel with same name,
- *	it supercedes the replaced channel. Input and output of
- *	the superceded channel is now going through the newly
- *	created channel and allows the arbitrary filtering/manipulation
- *	of the dataflow.
+ *	Replaces an entry in the hash table for a Tcl_Channel record. The
+ *	replacement is a new channel with same name, it supercedes the
+ *	replaced channel. Input and output of the superceded channel is now
+ *	going through the newly created channel and allows the arbitrary
+ *	filtering/manipulation of the dataflow.
  *
- *	Andreas Kupries <a.kupries@westend.com>, 12/13/1998
- *	"Trf-Patch for filtering channels"
+ *	Andreas Kupries <a.kupries@westend.com>, 12/13/1998 "Trf-Patch for
+ *	filtering channels"
  *
  * Results:
- *	Returns the new Tcl_Channel, which actually contains the
- *      saved information about prevChan.
+ *	Returns the new Tcl_Channel, which actually contains the saved
+ *	information about prevChan.
  *
  * Side effects:
- *    A new channel structure is allocated and linked below
- *    the existing channel.  The channel operations and client
- *    data of the existing channel are copied down to the newly
- *    created channel, and the current channel has its operations
- *    replaced by the new typePtr.
+ *	A new channel structure is allocated and linked below the existing
+ *	channel. The channel operations and client data of the existing
+ *	channel are copied down to the newly created channel, and the current
+ *	channel has its operations replaced by the new typePtr.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Channel
-Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
-    Tcl_Interp	    *interp;	   /* The interpreter we are working in */
-    Tcl_ChannelType *typePtr;	   /* The channel type record for the new
-				    * channel. */
-    ClientData	     instanceData; /* Instance specific data for the new
-				    * channel. */
-    int		     mask;	   /* TCL_READABLE & TCL_WRITABLE to indicate
-				    * if the channel is readable, writable. */
-    Tcl_Channel	     prevChan;	   /* The channel structure to replace */
-{
-    ThreadSpecificData	*tsdPtr = TCL_TSD_INIT(&dataKey);
-    Channel		*chanPtr, *prevChanPtr;
-    ChannelState	*statePtr;
-
-    /*
-     * Find the given channel in the list of all channels.
-     * If we don't find it, then it was never registered correctly.
+Tcl_StackChannel(
+    Tcl_Interp *interp,		/* The interpreter we are working in */
+    Tcl_ChannelType *typePtr,	/* The channel type record for the new
+				 * channel. */
+    ClientData instanceData,	/* Instance specific data for the new
+				 * channel. */
+    int mask,			/* TCL_READABLE & TCL_WRITABLE to indicate if
+				 * the channel is readable, writable. */
+    Tcl_Channel prevChan)	/* The channel structure to replace */
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    Channel *chanPtr, *prevChanPtr;
+    ChannelState *statePtr;
+    Tcl_DriverThreadActionProc *threadActionProc;
+
+    /*
+     * Find the given channel (prevChan) in the list of all channels. If we do
+     * not find it, then it was never registered correctly.
      *
      * This operation should occur at the top of a channel stack.
      */
 
-    statePtr    = (ChannelState *) tsdPtr->firstCSPtr;
+    statePtr = (ChannelState *) tsdPtr->firstCSPtr;
     prevChanPtr = ((Channel *) prevChan)->state->topChanPtr;
 
     while ((statePtr != NULL) && (statePtr->topChanPtr != prevChanPtr)) {
@@ -1459,21 +1567,21 @@ Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
     if (statePtr == NULL) {
 	if (interp) {
 	    Tcl_AppendResult(interp, "couldn't find state for channel \"",
-		    Tcl_GetChannelName(prevChan), "\"", (char *) NULL);
+		    Tcl_GetChannelName(prevChan), "\"", NULL);
 	}
-        return (Tcl_Channel) NULL;
+	return NULL;
     }
 
     /*
-     * Here we check if the given "mask" matches the "flags"
-     * of the already existing channel.
+     * Here we check if the given "mask" matches the "flags" of the already
+     * existing channel.
      *
      *	  | - | R | W | RW |
      *	--+---+---+---+----+	<=>  0 != (chan->mask & prevChan->mask)
      *	- |   |   |   |    |
-     *	R |   | + |   | +  |	The superceding channel is allowed to
-     *	W |   |   | + | +  |	restrict the capabilities of the
-     *	RW|   | + | + | +  |	superceded one !
+     *	R |   | + |   | +  |	The superceding channel is allowed to restrict
+     *	W |   |   | + | +  |	the capabilities of the superceded one!
+     *	RW|   | + | + | +  |
      *	--+---+---+---+----+
      */
 
@@ -1481,16 +1589,16 @@ Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
 	if (interp) {
 	    Tcl_AppendResult(interp,
 		    "reading and writing both disallowed for channel \"",
-		    Tcl_GetChannelName(prevChan), "\"", (char *) NULL);
+		    Tcl_GetChannelName(prevChan), "\"", NULL);
 	}
-        return (Tcl_Channel) NULL;
+	return NULL;
     }
 
     /*
-     * Flush the buffers. This ensures that any data still in them
-     * at this time is not handled by the new transformation. Restrict
-     * this to writable channels. Take care to hide a possible bg-copy
-     * in progress from Tcl_Flush and the CheckForChannelErrors inside.
+     * Flush the buffers. This ensures that any data still in them at this
+     * time is not handled by the new transformation. Restrict this to
+     * writable channels. Take care to hide a possible bg-copy in progress
+     * from Tcl_Flush and the CheckForChannelErrors inside.
      */
 
     if ((mask & TCL_WRITABLE) != 0) {
@@ -1498,63 +1606,62 @@ Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
         CopyState *csPtrW;
 
         csPtrR           = statePtr->csPtrR;
-	statePtr->csPtrR = (CopyState*) NULL;
+	statePtr->csPtrR = NULL;
 
         csPtrW           = statePtr->csPtrW;
-	statePtr->csPtrW = (CopyState*) NULL;
+	statePtr->csPtrW = NULL;
 
 	if (Tcl_Flush((Tcl_Channel) prevChanPtr) != TCL_OK) {
-	    statePtr->csPtrR  = csPtrR;
+	    statePtr->csPtrR = csPtrR;
 	    statePtr->csPtrW = csPtrW;
 	    if (interp) {
 		Tcl_AppendResult(interp, "could not flush channel \"",
-			Tcl_GetChannelName(prevChan), "\"", (char *) NULL);
+			Tcl_GetChannelName(prevChan), "\"", NULL);
 	    }
-	    return (Tcl_Channel) NULL;
+	    return NULL;
 	}
 
-	statePtr->csPtrR  = csPtrR;
+	statePtr->csPtrR = csPtrR;
 	statePtr->csPtrW = csPtrW;
     }
+
     /*
-     * Discard any input in the buffers. They are not yet read by the
-     * user of the channel, so they have to go through the new
-     * transformation before reading. As the buffers contain the
-     * untransformed form their contents are not only useless but actually
-     * distorts our view of the system.
+     * Discard any input in the buffers. They are not yet read by the user of
+     * the channel, so they have to go through the new transformation before
+     * reading. As the buffers contain the untransformed form their contents
+     * are not only useless but actually distorts our view of the system.
      *
-     * To preserve the information without having to read them again and
-     * to avoid problems with the location in the channel (seeking might
-     * be impossible) we move the buffers from the common state structure
-     * into the channel itself. We use the buffers in the channel below
-     * the new transformation to hold the data. In the future this allows
-     * us to write transformations which pre-read data and push the unused
-     * part back when they are going away.
+     * To preserve the information without having to read them again and to
+     * avoid problems with the location in the channel (seeking might be
+     * impossible) we move the buffers from the common state structure into
+     * the channel itself. We use the buffers in the channel below the new
+     * transformation to hold the data. In the future this allows us to write
+     * transformations which pre-read data and push the unused part back when
+     * they are going away.
      */
 
-    if (((mask & TCL_READABLE) != 0) &&
-	(statePtr->inQueueHead != (ChannelBuffer*) NULL)) {
-      /*
-       * Remark: It is possible that the channel buffers contain data from
-       * some earlier push-backs.
-       */
+    if (((mask & TCL_READABLE) != 0) && (statePtr->inQueueHead != NULL)) {
+	/*
+	 * Remark: It is possible that the channel buffers contain data from
+	 * some earlier push-backs.
+	 */
 
-      statePtr->inQueueTail->nextPtr = prevChanPtr->inQueueHead;
-      prevChanPtr->inQueueHead       = statePtr->inQueueHead;
+	statePtr->inQueueTail->nextPtr = prevChanPtr->inQueueHead;
+	prevChanPtr->inQueueHead = statePtr->inQueueHead;
 
-      if (prevChanPtr->inQueueTail == (ChannelBuffer*) NULL) {
-	prevChanPtr->inQueueTail = statePtr->inQueueTail;
-      }
+	if (prevChanPtr->inQueueTail == NULL) {
+	    prevChanPtr->inQueueTail = statePtr->inQueueTail;
+	}
 
-      statePtr->inQueueHead          = (ChannelBuffer*) NULL;
-      statePtr->inQueueTail          = (ChannelBuffer*) NULL;
+	statePtr->inQueueHead = NULL;
+	statePtr->inQueueTail = NULL;
     }
 
-    chanPtr = (Channel *) ckalloc((unsigned) sizeof(Channel));
+    chanPtr = (Channel *) ckalloc(sizeof(Channel));
 
     /*
-     * Save some of the current state into the new structure,
-     * reinitialize the parts which will stay with the transformation.
+     * Save some of the current state into the new structure, reinitialize the
+     * parts which will stay with the transformation.
      *
      * Remarks:
      */
@@ -1563,9 +1670,9 @@ Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
     chanPtr->instanceData	= instanceData;
     chanPtr->typePtr		= typePtr;
     chanPtr->downChanPtr	= prevChanPtr;
-    chanPtr->upChanPtr		= (Channel *) NULL;
-    chanPtr->inQueueHead        = (ChannelBuffer*) NULL;
-    chanPtr->inQueueTail        = (ChannelBuffer*) NULL;
+    chanPtr->upChanPtr		= NULL;
+    chanPtr->inQueueHead	= NULL;
+    chanPtr->inQueueTail	= NULL;
 
     /*
      * Place new block at the head of a possibly existing list of previously
@@ -1575,6 +1682,22 @@ Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
     prevChanPtr->upChanPtr	= chanPtr;
     statePtr->topChanPtr	= chanPtr;
 
+    /*
+     * TIP #218, Channel Thread Actions.
+     *
+     * We call the thread actions for the new channel directly. We _cannot_
+     * use SpliceChannel, because the (thread-)global list of all channels
+     * always contains the _ChannelState_ for a stack of channels, not the
+     * individual channels. And SpliceChannel would not only call the thread
+     * actions, but also add the shared ChannelState to this list a second
+     * time, mangling it.
+     */
+
+    threadActionProc = Tcl_ChannelThreadActionProc(chanPtr->typePtr);
+    if (threadActionProc != NULL) {
+	(*threadActionProc)(chanPtr->instanceData, TCL_CHANNEL_THREAD_INSERT);
+    }
+
     return (Tcl_Channel) chanPtr;
 }
 
@@ -1583,27 +1706,28 @@ Tcl_StackChannel(interp, typePtr, instanceData, mask, prevChan)
  *
  * Tcl_UnstackChannel --
  *
- *	Unstacks an entry in the hash table for a Tcl_Channel
- *	record. This is the reverse to 'Tcl_StackChannel'.
+ *	Unstacks an entry in the hash table for a Tcl_Channel record. This is
+ *	the reverse to 'Tcl_StackChannel'.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	If TCL_ERROR is returned, the posix error code will be set
- *	with Tcl_SetErrno.
+ *	If TCL_ERROR is returned, the posix error code will be set with
+ *	Tcl_SetErrno. May leave a message in interp result as well.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_UnstackChannel (interp, chan)
-    Tcl_Interp *interp; /* The interpreter we are working in */
-    Tcl_Channel chan;   /* The channel to unstack */
+Tcl_UnstackChannel(
+    Tcl_Interp *interp,		/* The interpreter we are working in */
+    Tcl_Channel chan)		/* The channel to unstack */
 {
-    Channel      *chanPtr  = (Channel *) chan;
+    Channel *chanPtr = (Channel *) chan;
     ChannelState *statePtr = chanPtr->state;
     int result = 0;
+    Tcl_DriverThreadActionProc *threadActionProc;
 
     /*
      * This operation should occur at the top of a channel stack.
@@ -1611,20 +1735,21 @@ Tcl_UnstackChannel (interp, chan)
 
     chanPtr = statePtr->topChanPtr;
 
-    if (chanPtr->downChanPtr != (Channel *) NULL) {
-        /*
+    if (chanPtr->downChanPtr != NULL) {
+	/*
 	 * Instead of manipulating the per-thread / per-interp list/hashtable
 	 * of registered channels we wind down the state of the transformation,
 	 * and then restore the state of underlying channel into the old
 	 * structure.
 	 */
+
 	Channel *downChanPtr = chanPtr->downChanPtr;
 
 	/*
-	 * Flush the buffers. This ensures that any data still in them
-	 * at this time _is_ handled by the transformation we are unstacking
-	 * right now. Restrict this to writable channels. Take care to hide
-	 * a possible bg-copy in progress from Tcl_Flush and the
+	 * Flush the buffers. This ensures that any data still in them at this
+	 * time _is_ handled by the transformation we are unstacking right
+	 * now. Restrict this to writable channels. Take care to hide a
+	 * possible bg-copy in progress from Tcl_Flush and the
 	 * CheckForChannelErrors inside.
 	 */
 
@@ -1633,18 +1758,27 @@ Tcl_UnstackChannel (interp, chan)
 	    CopyState *csPtrW;
 
 	    csPtrR           = statePtr->csPtrR;
-	    statePtr->csPtrR = (CopyState*) NULL;
+	    statePtr->csPtrR = NULL;
 
 	    csPtrW           = statePtr->csPtrW;
-	    statePtr->csPtrW = (CopyState*) NULL;
+	    statePtr->csPtrW = NULL;
 
 	    if (Tcl_Flush((Tcl_Channel) chanPtr) != TCL_OK) {
-	        statePtr->csPtrR  = csPtrR;
+		statePtr->csPtrR = csPtrR;
 		statePtr->csPtrW = csPtrW;
-		if (interp) {
+
+		/*
+		 * TIP #219, Tcl Channel Reflection API.
+		 * Move error messages put by the driver into the chan/ip
+		 * bypass area into the regular interpreter result. Fall back
+		 * to the regular message if nothing was found in the
+		 * bypasses.
+		 */
+
+		if (!TclChanCaughtErrorBypass(interp, chan) && interp) {
 		    Tcl_AppendResult(interp, "could not flush channel \"",
 			    Tcl_GetChannelName((Tcl_Channel) chanPtr), "\"",
-			    (char *) NULL);
+			    NULL);
 		}
 		return TCL_ERROR;
 	    }
@@ -1654,42 +1788,60 @@ Tcl_UnstackChannel (interp, chan)
 	}
 
 	/*
-	 * Anything in the input queue and the push-back buffers of
-	 * the transformation going away is transformed data, but not
-	 * yet read. As unstacking means that the caller does not want
-	 * to see transformed data any more we have to discard these
-	 * bytes. To avoid writing an analogue to 'DiscardInputQueued'
-	 * we move the information in the push back buffers to the
-	 * input queue and then call 'DiscardInputQueued' on that.
+	 * Anything in the input queue and the push-back buffers of the
+	 * transformation going away is transformed data, but not yet read. As
+	 * unstacking means that the caller does not want to see transformed
+	 * data any more we have to discard these bytes. To avoid writing an
+	 * analogue to 'DiscardInputQueued' we move the information in the
+	 * push back buffers to the input queue and then call
+	 * 'DiscardInputQueued' on that.
 	 */
 
-	if (((statePtr->flags & TCL_READABLE)  != 0) &&
-	    ((statePtr->inQueueHead != (ChannelBuffer*) NULL) ||
-	     (chanPtr->inQueueHead  != (ChannelBuffer*) NULL))) {
+	if ((((statePtr->flags & TCL_READABLE) != 0)) &&
+		((statePtr->inQueueHead != NULL) ||
+		(chanPtr->inQueueHead != NULL))) {
 
-	    if ((statePtr->inQueueHead != (ChannelBuffer*) NULL) &&
-		(chanPtr->inQueueHead  != (ChannelBuffer*) NULL)) {
-	        statePtr->inQueueTail->nextPtr = chanPtr->inQueueHead;
+	    if ((statePtr->inQueueHead != NULL) &&
+		    (chanPtr->inQueueHead != NULL)) {
+		statePtr->inQueueTail->nextPtr = chanPtr->inQueueHead;
 		statePtr->inQueueTail = chanPtr->inQueueTail;
-	        statePtr->inQueueHead = statePtr->inQueueTail;
+		statePtr->inQueueHead = statePtr->inQueueTail;
 
-	    } else if (chanPtr->inQueueHead != (ChannelBuffer*) NULL) {
-	        statePtr->inQueueHead = chanPtr->inQueueHead;
+	    } else if (chanPtr->inQueueHead != NULL) {
+		statePtr->inQueueHead = chanPtr->inQueueHead;
 		statePtr->inQueueTail = chanPtr->inQueueTail;
 	    }
 
-	    chanPtr->inQueueHead          = (ChannelBuffer*) NULL;
-	    chanPtr->inQueueTail          = (ChannelBuffer*) NULL;
+	    chanPtr->inQueueHead = NULL;
+	    chanPtr->inQueueTail = NULL;
+
+	    DiscardInputQueued(statePtr, 0);
+	}
+
+	/*
+	 * TIP #218, Channel Thread Actions.
+	 *
+	 * We call the thread actions for the new channel directly. We
+	 * _cannot_ use CutChannel, because the (thread-)global list of all
+	 * channels always contains the _ChannelState_ for a stack of
+	 * channels, not the individual channels. And SpliceChannel would not
+	 * only call the thread actions, but also remove the shared
+	 * ChannelState from this list despite there being more channels for
+	 * the state which are still active.
+	 */
 
-	    DiscardInputQueued (statePtr, 0);
+	threadActionProc = Tcl_ChannelThreadActionProc(chanPtr->typePtr);
+	if (threadActionProc != NULL) {
+	    (*threadActionProc)(chanPtr->instanceData,
+		    TCL_CHANNEL_THREAD_REMOVE);
 	}
 
-	statePtr->topChanPtr	= downChanPtr;
-	downChanPtr->upChanPtr	= (Channel *) NULL;
+	statePtr->topChanPtr = downChanPtr;
+	downChanPtr->upChanPtr = NULL;
 
 	/*
 	 * Leave this link intact for closeproc
-	 *  chanPtr->downChanPtr	= (Channel *) NULL;
+	 *  chanPtr->downChanPtr = NULL;
 	 */
 
 	/*
@@ -1704,28 +1856,51 @@ Tcl_UnstackChannel (interp, chan)
 		    interp, 0);
 	}
 
-	chanPtr->typePtr	= NULL;
+	chanPtr->typePtr = NULL;
+
 	/*
 	 * AK: Tcl_NotifyChannel may hold a reference to this block of memory
 	 */
-	Tcl_EventuallyFree((ClientData) chanPtr, TCL_DYNAMIC);
+
+	Tcl_EventuallyFree(chanPtr, TCL_DYNAMIC);
 	UpdateInterest(downChanPtr);
 
 	if (result != 0) {
 	    Tcl_SetErrno(result);
+
+	    /*
+	     * TIP #219, Tcl Channel Reflection API.
+	     * Move error messages put by the driver into the chan/ip bypass
+	     * area into the regular interpreter result.
+	     */
+
+	    TclChanCaughtErrorBypass(interp, chan);
 	    return TCL_ERROR;
 	}
     } else {
-        /*
-	 * This channel does not cover another one.
-	 * Simply do a close, if necessary.
+	/*
+	 * This channel does not cover another one. Simply do a close, if
+	 * necessary.
 	 */
 
-        if (statePtr->refCount <= 0) {
-            if (Tcl_Close(interp, chan) != TCL_OK) {
-                return TCL_ERROR;
-            }
+	if (statePtr->refCount <= 0) {
+	    if (Tcl_Close(interp, chan) != TCL_OK) {
+		/*
+		 * TIP #219, Tcl Channel Reflection API.
+		 * "TclChanCaughtErrorBypass" is not required here, it was
+		 * done already by "Tcl_Close".
+		 */
+
+		return TCL_ERROR;
+	    }
 	}
+
+	/*
+	 * TIP #218, Channel Thread Actions.
+	 * Not required in this branch, this is done by Tcl_Close. If
+	 * Tcl_Close is not called then the ChannelState is still active in
+	 * the thread and no action has to be taken either.
+	 */
     }
 
     return TCL_OK;
@@ -1739,9 +1914,9 @@ Tcl_UnstackChannel (interp, chan)
  *	Determines whether the specified channel is stacked upon another.
  *
  * Results:
- *	NULL if the channel is not stacked upon another one, or a reference
- *	to the channel it is stacked upon. This reference can be used in
- *	queries, but modification is not allowed.
+ *	NULL if the channel is not stacked upon another one, or a reference to
+ *	the channel it is stacked upon. This reference can be used in queries,
+ *	but modification is not allowed.
  *
  * Side effects:
  *	None.
@@ -1750,10 +1925,11 @@ Tcl_UnstackChannel (interp, chan)
  */
 
 Tcl_Channel
-Tcl_GetStackedChannel(chan)
-    Tcl_Channel chan;
+Tcl_GetStackedChannel(
+    Tcl_Channel chan)
 {
-    Channel *chanPtr = (Channel *) chan;	/* The actual channel. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The actual channel. */
 
     return (Tcl_Channel) chanPtr->downChanPtr;
 }
@@ -1766,9 +1942,9 @@ Tcl_GetStackedChannel(chan)
  *	Returns the top channel of a channel stack.
  *
  * Results:
- *	NULL if the channel is not stacked upon another one, or a reference
- *	to the channel it is stacked upon. This reference can be used in
- *	queries, but modification is not allowed.
+ *	NULL if the channel is not stacked upon another one, or a reference to
+ *	the channel it is stacked upon. This reference can be used in queries,
+ *	but modification is not allowed.
  *
  * Side effects:
  *	None.
@@ -1777,10 +1953,11 @@ Tcl_GetStackedChannel(chan)
  */
 
 Tcl_Channel
-Tcl_GetTopChannel(chan)
-    Tcl_Channel chan;
+Tcl_GetTopChannel(
+    Tcl_Channel chan)
 {
-    Channel *chanPtr = (Channel *) chan;	/* The actual channel. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The actual channel. */
 
     return (Tcl_Channel) chanPtr->state->topChanPtr;
 }
@@ -1802,10 +1979,11 @@ Tcl_GetTopChannel(chan)
  */
 
 ClientData
-Tcl_GetChannelInstanceData(chan)
-    Tcl_Channel chan;		/* Channel for which to return client data. */
+Tcl_GetChannelInstanceData(
+    Tcl_Channel chan)		/* Channel for which to return client data. */
 {
-    Channel *chanPtr = (Channel *) chan;	/* The actual channel. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The actual channel. */
 
     return chanPtr->instanceData;
 }
@@ -1815,8 +1993,7 @@ Tcl_GetChannelInstanceData(chan)
  *
  * Tcl_GetChannelThread --
  *
- *	Given a channel structure, returns the thread managing it.
- *	TIP #10
+ *	Given a channel structure, returns the thread managing it. TIP #10
  *
  * Results:
  *	Returns the id of the thread managing the channel.
@@ -1828,10 +2005,12 @@ Tcl_GetChannelInstanceData(chan)
  */
 
 Tcl_ThreadId
-Tcl_GetChannelThread(chan)
-    Tcl_Channel chan;		/* The channel to return managing thread for. */
+Tcl_GetChannelThread(
+    Tcl_Channel chan)		/* The channel to return the managing thread
+				 * for. */
 {
-    Channel *chanPtr = (Channel *) chan;	/* The actual channel. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The actual channel. */
 
     return chanPtr->state->managingThread;
 }
@@ -1853,10 +2032,11 @@ Tcl_GetChannelThread(chan)
  */
 
 Tcl_ChannelType *
-Tcl_GetChannelType(chan)
-    Tcl_Channel chan;		/* The channel to return type for. */
+Tcl_GetChannelType(
+    Tcl_Channel chan)		/* The channel to return type for. */
 {
-    Channel *chanPtr = (Channel *) chan;	/* The actual channel. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The actual channel. */
 
     return chanPtr->typePtr;
 }
@@ -1866,8 +2046,8 @@ Tcl_GetChannelType(chan)
  *
  * Tcl_GetChannelMode --
  *
- *	Computes a mask indicating whether the channel is open for
- *	reading and writing.
+ *	Computes a mask indicating whether the channel is open for reading and
+ *	writing.
  *
  * Results:
  *	An OR-ed combination of TCL_READABLE and TCL_WRITABLE.
@@ -1879,12 +2059,12 @@ Tcl_GetChannelType(chan)
  */
 
 int
-Tcl_GetChannelMode(chan)
-    Tcl_Channel chan;		/* The channel for which the mode is
-                                 * being computed. */
+Tcl_GetChannelMode(
+    Tcl_Channel chan)		/* The channel for which the mode is being
+				 * computed. */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* State of actual channel. */
+				/* State of actual channel. */
 
     return (statePtr->flags & (TCL_READABLE | TCL_WRITABLE));
 }
@@ -1897,9 +2077,8 @@ Tcl_GetChannelMode(chan)
  *	Returns the string identifying the channel name.
  *
  * Results:
- *	The string containing the channel name. This memory is
- *	owned by the generic layer and should not be modified by
- *	the caller.
+ *	The string containing the channel name. This memory is owned by the
+ *	generic layer and should not be modified by the caller.
  *
  * Side effects:
  *	None.
@@ -1907,9 +2086,9 @@ Tcl_GetChannelMode(chan)
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_GetChannelName(chan)
-    Tcl_Channel chan;		/* The channel for which to return the name. */
+const char *
+Tcl_GetChannelName(
+    Tcl_Channel chan)		/* The channel for which to return the name. */
 {
     ChannelState *statePtr;	/* State of actual channel. */
 
@@ -1935,16 +2114,24 @@ Tcl_GetChannelName(chan)
  */
 
 int
-Tcl_GetChannelHandle(chan, direction, handlePtr)
-    Tcl_Channel chan;		/* The channel to get file from. */
-    int direction;		/* TCL_WRITABLE or TCL_READABLE. */
-    ClientData *handlePtr;	/* Where to store handle */
+Tcl_GetChannelHandle(
+    Tcl_Channel chan,		/* The channel to get file from. */
+    int direction,		/* TCL_WRITABLE or TCL_READABLE. */
+    ClientData *handlePtr)	/* Where to store handle */
 {
     Channel *chanPtr;		/* The actual channel. */
     ClientData handle;
     int result;
 
     chanPtr = ((Channel *) chan)->state->bottomChanPtr;
+    if (!chanPtr->typePtr->getHandleProc) {
+	Tcl_Obj* err;
+	TclNewLiteralStringObj(err, "channel \"");
+	Tcl_AppendToObj(err, Tcl_GetChannelName(chan), -1);
+	Tcl_AppendToObj(err, "\" does not support OS handles", -1);
+	Tcl_SetChannelError (chan,err);
+	return TCL_ERROR;
+    }
     result = (chanPtr->typePtr->getHandleProc)(chanPtr->instanceData,
 	    direction, &handle);
     if (handlePtr) {
@@ -1958,16 +2145,15 @@ Tcl_GetChannelHandle(chan, direction, handlePtr)
  *
  * AllocChannelBuffer --
  *
- *	A channel buffer has BUFFER_PADDING bytes extra at beginning to
- *	hold any bytes of a native-encoding character that got split by
- *	the end of the previous buffer and need to be moved to the
- *	beginning of the next buffer to make a contiguous string so it
- *	can be converted to UTF-8.
+ *	A channel buffer has BUFFER_PADDING bytes extra at beginning to hold
+ *	any bytes of a native-encoding character that got split by the end of
+ *	the previous buffer and need to be moved to the beginning of the next
+ *	buffer to make a contiguous string so it can be converted to UTF-8.
  *
- *	A channel buffer has BUFFER_PADDING bytes extra at the end to
- *	hold any bytes of a native-encoding character (generated from a
- *	UTF-8 character) that overflow past the end of the buffer and
- *	need to be moved to the next buffer.
+ *	A channel buffer has BUFFER_PADDING bytes extra at the end to hold any
+ *	bytes of a native-encoding character (generated from a UTF-8
+ *	character) that overflow past the end of the buffer and need to be
+ *	moved to the next buffer.
  *
  * Results:
  *	A newly allocated channel buffer.
@@ -1979,8 +2165,8 @@ Tcl_GetChannelHandle(chan, direction, handlePtr)
  */
 
 static ChannelBuffer *
-AllocChannelBuffer(length)
-    int length;			/* Desired length of channel buffer. */
+AllocChannelBuffer(
+    int length)			/* Desired length of channel buffer. */
 {
     ChannelBuffer *bufPtr;
     int n;
@@ -1990,7 +2176,7 @@ AllocChannelBuffer(length)
     bufPtr->nextAdded	= BUFFER_PADDING;
     bufPtr->nextRemoved	= BUFFER_PADDING;
     bufPtr->bufLength	= length + BUFFER_PADDING;
-    bufPtr->nextPtr	= (ChannelBuffer *) NULL;
+    bufPtr->nextPtr	= NULL;
     return bufPtr;
 }
 
@@ -1999,11 +2185,10 @@ AllocChannelBuffer(length)
  *
  * RecycleBuffer --
  *
- *	Helper function to recycle input and output buffers. Ensures
- *	that two input buffers are saved (one in the input queue and
- *	another in the saveInBufPtr field) and that curOutPtr is set
- *	to a buffer. Only if these conditions are met is the buffer
- *	freed to the OS.
+ *	Helper function to recycle input and output buffers. Ensures that two
+ *	input buffers are saved (one in the input queue and another in the
+ *	saveInBufPtr field) and that curOutPtr is set to a buffer. Only if
+ *	these conditions are met is the buffer freed to the OS.
  *
  * Results:
  *	None.
@@ -2015,46 +2200,46 @@ AllocChannelBuffer(length)
  */
 
 static void
-RecycleBuffer(statePtr, bufPtr, mustDiscard)
-    ChannelState *statePtr;	/* ChannelState in which to recycle buffers. */
-    ChannelBuffer *bufPtr;	/* The buffer to recycle. */
-    int mustDiscard;		/* If nonzero, free the buffer to the
-                                 * OS, always. */
+RecycleBuffer(
+    ChannelState *statePtr,	/* ChannelState in which to recycle buffers. */
+    ChannelBuffer *bufPtr,	/* The buffer to recycle. */
+    int mustDiscard)		/* If nonzero, free the buffer to the OS,
+				 * always. */
 {
     /*
      * Do we have to free the buffer to the OS?
      */
 
     if (mustDiscard) {
-        ckfree((char *) bufPtr);
-        return;
+	ckfree((char *) bufPtr);
+	return;
     }
 
     /*
-     * Only save buffers which are at least as big as the requested
-     * buffersize for the channel. This is to honor dynamic changes
-     * of the buffersize made by the user.
+     * Only save buffers which are at least as big as the requested buffersize
+     * for the channel. This is to honor dynamic changes of the buffersize
+     * made by the user.
      */
 
     if ((bufPtr->bufLength - BUFFER_PADDING) < statePtr->bufSize) {
-        ckfree((char *) bufPtr);
-        return;
+	ckfree((char *) bufPtr);
+	return;
     }
 
     /*
      * Only save buffers for the input queue if the channel is readable.
      */
-    
+
     if (statePtr->flags & TCL_READABLE) {
-        if (statePtr->inQueueHead == (ChannelBuffer *) NULL) {
-            statePtr->inQueueHead = bufPtr;
-            statePtr->inQueueTail = bufPtr;
-            goto keepit;
-        }
-        if (statePtr->saveInBufPtr == (ChannelBuffer *) NULL) {
-            statePtr->saveInBufPtr = bufPtr;
-            goto keepit;
-        }
+	if (statePtr->inQueueHead == NULL) {
+	    statePtr->inQueueHead = bufPtr;
+	    statePtr->inQueueTail = bufPtr;
+	    goto keepBuffer;
+	}
+	if (statePtr->saveInBufPtr == NULL) {
+	    statePtr->saveInBufPtr = bufPtr;
+	    goto keepBuffer;
+	}
     }
 
     /*
@@ -2062,10 +2247,10 @@ RecycleBuffer(statePtr, bufPtr, mustDiscard)
      */
 
     if (statePtr->flags & TCL_WRITABLE) {
-        if (statePtr->curOutPtr == (ChannelBuffer *) NULL) {
-            statePtr->curOutPtr = bufPtr;
-            goto keepit;
-        }
+	if (statePtr->curOutPtr == NULL) {
+	    statePtr->curOutPtr = bufPtr;
+	    goto keepBuffer;
+	}
     }
 
     /*
@@ -2075,10 +2260,10 @@ RecycleBuffer(statePtr, bufPtr, mustDiscard)
     ckfree((char *) bufPtr);
     return;
 
-    keepit:
+  keepBuffer:
     bufPtr->nextRemoved = BUFFER_PADDING;
     bufPtr->nextAdded = BUFFER_PADDING;
-    bufPtr->nextPtr = (ChannelBuffer *) NULL;
+    bufPtr->nextPtr = NULL;
 }
 
 /*
@@ -2098,18 +2283,18 @@ RecycleBuffer(statePtr, bufPtr, mustDiscard)
  */
 
 static void
-DiscardOutputQueued(statePtr)
-    ChannelState *statePtr;	/* ChannelState for which to discard output. */
+DiscardOutputQueued(
+    ChannelState *statePtr)	/* ChannelState for which to discard output. */
 {
     ChannelBuffer *bufPtr;
-    
-    while (statePtr->outQueueHead != (ChannelBuffer *) NULL) {
-        bufPtr = statePtr->outQueueHead;
-        statePtr->outQueueHead = bufPtr->nextPtr;
-        RecycleBuffer(statePtr, bufPtr, 0);
+
+    while (statePtr->outQueueHead != NULL) {
+	bufPtr = statePtr->outQueueHead;
+	statePtr->outQueueHead = bufPtr->nextPtr;
+	RecycleBuffer(statePtr, bufPtr, 0);
     }
-    statePtr->outQueueHead = (ChannelBuffer *) NULL;
-    statePtr->outQueueTail = (ChannelBuffer *) NULL;
+    statePtr->outQueueHead = NULL;
+    statePtr->outQueueTail = NULL;
 }
 
 /*
@@ -2117,29 +2302,28 @@ DiscardOutputQueued(statePtr)
  *
  * CheckForDeadChannel --
  *
- *	This function checks is a given channel is Dead.
- *      (A channel that has been closed but not yet deallocated.)
+ *	This function checks is a given channel is Dead (a channel that has
+ *	been closed but not yet deallocated.)
  *
  * Results:
  *	True (1) if channel is Dead, False (0) if channel is Ok
  *
  * Side effects:
- *      None
+ *	None
  *
  *----------------------------------------------------------------------
  */
 
 static int
-CheckForDeadChannel(interp, statePtr)
-    Tcl_Interp *interp;		/* For error reporting (can be NULL) */
-    ChannelState *statePtr;	/* The channel state to check. */
+CheckForDeadChannel(
+    Tcl_Interp *interp,		/* For error reporting (can be NULL) */
+    ChannelState *statePtr)	/* The channel state to check. */
 {
     if (statePtr->flags & CHANNEL_DEAD) {
-        Tcl_SetErrno(EINVAL);
+	Tcl_SetErrno(EINVAL);
 	if (interp) {
 	    Tcl_AppendResult(interp,
-		    "unable to access channel: invalid channel",
-		    (char *) NULL);   
+		    "unable to access channel: invalid channel", NULL);
 	}
 	return 1;
     }
@@ -2156,221 +2340,253 @@ CheckForDeadChannel(interp, statePtr)
  *	event handler to flush channel output asynchronously.
  *
  * Results:
- *	0 if successful, else the error code that was returned by the
- *	channel type operation.
+ *	0 if successful, else the error code that was returned by the channel
+ *	type operation. May leave a message in the interp result.
  *
  * Side effects:
- *	May produce output on a channel. May block indefinitely if the
- *	channel is synchronous. May schedule an async flush on the channel.
- *	May recycle memory for buffers in the output queue.
+ *	May produce output on a channel. May block indefinitely if the channel
+ *	is synchronous. May schedule an async flush on the channel. May
+ *	recycle memory for buffers in the output queue.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-FlushChannel(interp, chanPtr, calledFromAsyncFlush)
-    Tcl_Interp *interp;			/* For error reporting during close. */
-    Channel *chanPtr;			/* The channel to flush on. */
-    int calledFromAsyncFlush;		/* If nonzero then we are being
-                                         * called from an asynchronous
-                                         * flush callback. */
+FlushChannel(
+    Tcl_Interp *interp,		/* For error reporting during close. */
+    Channel *chanPtr,		/* The channel to flush on. */
+    int calledFromAsyncFlush)	/* If nonzero then we are being called from an
+				 * asynchronous flush callback. */
 {
     ChannelState *statePtr = chanPtr->state;
-					/* State of the channel stack. */
-    ChannelBuffer *bufPtr;		/* Iterates over buffered output
-                                         * queue. */
-    int toWrite;			/* Amount of output data in current
-                                         * buffer available to be written. */
-    int written;			/* Amount of output data actually
-                                         * written in current round. */
-    int errorCode = 0;			/* Stores POSIX error codes from
-                                         * channel driver operations. */
-    int wroteSome = 0;			/* Set to one if any data was
-					 * written to the driver. */
+				/* State of the channel stack. */
+    ChannelBuffer *bufPtr;	/* Iterates over buffered output queue. */
+    int toWrite;		/* Amount of output data in current buffer
+				 * available to be written. */
+    int written;		/* Amount of output data actually written in
+				 * current round. */
+    int errorCode = 0;		/* Stores POSIX error codes from channel
+				 * driver operations. */
+    int wroteSome = 0;		/* Set to one if any data was written to the
+				 * driver. */
 
     /*
-     * Prevent writing on a dead channel -- a channel that has been closed
-     * but not yet deallocated. This can occur if the exit handler for the
-     * channel deallocation runs before all channels are deregistered in
-     * all interpreters.
+     * Prevent writing on a dead channel -- a channel that has been closed but
+     * not yet deallocated. This can occur if the exit handler for the channel
+     * deallocation runs before all channels are deregistered in all
+     * interpreters.
      */
-    
-    if (CheckForDeadChannel(interp, statePtr)) return -1;
-    
+
+    if (CheckForDeadChannel(interp, statePtr)) {
+	return -1;
+    }
+
     /*
-     * Loop over the queued buffers and attempt to flush as
-     * much as possible of the queued output to the channel.
+     * Loop over the queued buffers and attempt to flush as much as possible
+     * of the queued output to the channel.
      */
 
     while (1) {
+	/*
+	 * If the queue is empty and there is a ready current buffer, OR if
+	 * the current buffer is full, then move the current buffer to the
+	 * queue.
+	 */
+
+	if (((statePtr->curOutPtr != NULL) &&
+		IsBufferFull(statePtr->curOutPtr))
+		|| ((statePtr->flags & BUFFER_READY) &&
+			(statePtr->outQueueHead == NULL))) {
+	    ResetFlag(statePtr, BUFFER_READY);
+	    statePtr->curOutPtr->nextPtr = NULL;
+	    if (statePtr->outQueueHead == NULL) {
+		statePtr->outQueueHead = statePtr->curOutPtr;
+	    } else {
+		statePtr->outQueueTail->nextPtr = statePtr->curOutPtr;
+	    }
+	    statePtr->outQueueTail = statePtr->curOutPtr;
+	    statePtr->curOutPtr = NULL;
+	}
+	bufPtr = statePtr->outQueueHead;
+
+	/*
+	 * If we are not being called from an async flush and an async flush
+	 * is active, we just return without producing any output.
+	 */
 
-        /*
-         * If the queue is empty and there is a ready current buffer, OR if
-         * the current buffer is full, then move the current buffer to the
-         * queue.
-         */
-
-        if (((statePtr->curOutPtr != (ChannelBuffer *) NULL) &&
-                (statePtr->curOutPtr->nextAdded == statePtr->curOutPtr->bufLength))
-                || ((statePtr->flags & BUFFER_READY) &&
-                        (statePtr->outQueueHead == (ChannelBuffer *) NULL))) {
-            statePtr->flags &= (~(BUFFER_READY));
-            statePtr->curOutPtr->nextPtr = (ChannelBuffer *) NULL;
-            if (statePtr->outQueueHead == (ChannelBuffer *) NULL) {
-                statePtr->outQueueHead = statePtr->curOutPtr;
-            } else {
-                statePtr->outQueueTail->nextPtr = statePtr->curOutPtr;
-            }
-            statePtr->outQueueTail = statePtr->curOutPtr;
-            statePtr->curOutPtr = (ChannelBuffer *) NULL;
-        }
-        bufPtr = statePtr->outQueueHead;
-
-        /*
-         * If we are not being called from an async flush and an async
-         * flush is active, we just return without producing any output.
-         */
-
-        if ((!calledFromAsyncFlush) &&
-                (statePtr->flags & BG_FLUSH_SCHEDULED)) {
-            return 0;
-        }
-
-        /*
-         * If the output queue is still empty, break out of the while loop.
-         */
-
-        if (bufPtr == (ChannelBuffer *) NULL) {
-            break;	/* Out of the "while (1)". */
-        }
-
-        /*
-         * Produce the output on the channel.
-         */
-
-        toWrite = bufPtr->nextAdded - bufPtr->nextRemoved;
+	if ((!calledFromAsyncFlush) &&
+		(statePtr->flags & BG_FLUSH_SCHEDULED)) {
+	    return 0;
+	}
+
+	/*
+	 * If the output queue is still empty, break out of the while loop.
+	 */
+
+	if (bufPtr == NULL) {
+	    break;	/* Out of the "while (1)". */
+	}
+
+	/*
+	 * Produce the output on the channel.
+	 */
+
+	toWrite = BytesLeft(bufPtr);
 	if (toWrite == 0) {
 	    written = 0;
 	} else {
-	    written = (chanPtr->typePtr->outputProc) (chanPtr->instanceData,
-                bufPtr->buf + bufPtr->nextRemoved, toWrite,
-		&errorCode);
+	    written = (chanPtr->typePtr->outputProc)(chanPtr->instanceData,
+		RemovePoint(bufPtr), toWrite, &errorCode);
 	}
 
 	/*
-         * If the write failed completely attempt to start the asynchronous
-         * flush mechanism and break out of this loop - do not attempt to
-         * write any more output at this time.
-         */
-
-        if (written < 0) {
-            
-            /*
-             * If the last attempt to write was interrupted, simply retry.
-             */
-            
-            if (errorCode == EINTR) {
-                errorCode = 0;
-                continue;
-            }
-
-            /*
-             * If the channel is non-blocking and we would have blocked,
-             * start a background flushing handler and break out of the loop.
-             */
-
-            if ((errorCode == EWOULDBLOCK) || (errorCode == EAGAIN)) {
+	 * If the write failed completely attempt to start the asynchronous
+	 * flush mechanism and break out of this loop - do not attempt to
+	 * write any more output at this time.
+	 */
+
+	if (written < 0) {
+	    /*
+	     * If the last attempt to write was interrupted, simply retry.
+	     */
+
+	    if (errorCode == EINTR) {
+		errorCode = 0;
+		continue;
+	    }
+
+	    /*
+	     * If the channel is non-blocking and we would have blocked, start
+	     * a background flushing handler and break out of the loop.
+	     */
+
+	    if ((errorCode == EWOULDBLOCK) || (errorCode == EAGAIN)) {
 		/*
-		 * This used to check for CHANNEL_NONBLOCKING, and panic
-		 * if the channel was blocking.  However, it appears
-		 * that setting stdin to -blocking 0 has some effect on
-		 * the stdout when it's a tty channel (dup'ed underneath)
+		 * This used to check for CHANNEL_NONBLOCKING, and panic if
+		 * the channel was blocking. However, it appears that setting
+		 * stdin to -blocking 0 has some effect on the stdout when
+		 * it's a tty channel (dup'ed underneath)
 		 */
+
 		if (!(statePtr->flags & BG_FLUSH_SCHEDULED)) {
-		    statePtr->flags |= BG_FLUSH_SCHEDULED;
+		    SetFlag(statePtr, BG_FLUSH_SCHEDULED);
 		    UpdateInterest(chanPtr);
 		}
 		errorCode = 0;
 		break;
-            }
+	    }
+
+	    /*
+	     * Decide whether to report the error upwards or defer it.
+	     */
 
-            /*
-             * Decide whether to report the error upwards or defer it.
-             */
+	    if (calledFromAsyncFlush) {
+		/*
+		 * TIP #219, Tcl Channel Reflection API.
+		 * When defering the error copy a message from the bypass into
+		 * the unreported area. Or discard it if the new error is to be
+		 * ignored in favor of an earlier defered error.
+		 */
 
-            if (calledFromAsyncFlush) {
-                if (statePtr->unreportedError == 0) {
-                    statePtr->unreportedError = errorCode;
-                }
-            } else {
-                Tcl_SetErrno(errorCode);
-		if (interp != NULL) {
+		Tcl_Obj *msg = statePtr->chanMsg;
+
+		if (statePtr->unreportedError == 0) {
+		    statePtr->unreportedError = errorCode;
+		    statePtr->unreportedMsg = msg;
+		    if (msg != NULL) {
+			Tcl_IncrRefCount(msg);
+		    }
+		} else {
+		    /*
+		     * An old unreported error is kept, and this error thrown
+		     * away.
+		     */
+
+		    statePtr->chanMsg = NULL;
+		    if (msg != NULL) {
+			TclDecrRefCount(msg);
+		    }
+		}
+	    } else {
+		/*
+		 * TIP #219, Tcl Channel Reflection API.
+		 * Move error messages put by the driver into the chan bypass
+		 * area into the regular interpreter result. Fall back to the
+		 * regular message if nothing was found in the bypasses.
+		 */
 
+		Tcl_SetErrno(errorCode);
+		if (interp != NULL && !TclChanCaughtErrorBypass(interp,
+			(Tcl_Channel) chanPtr)) {
 		    /*
-		     * Casting away CONST here is safe because the
-		     * TCL_VOLATILE flag guarantees CONST treatment
-		     * of the Posix error string.
+		     * Casting away const here is safe because the
+		     * TCL_VOLATILE flag guarantees const treatment of the
+		     * Posix error string.
 		     */
 
-		    Tcl_SetResult(interp,
-			    (char *) Tcl_PosixError(interp), TCL_VOLATILE);
+		    Tcl_SetResult(interp, (char *) Tcl_PosixError(interp),
+			    TCL_VOLATILE);
 		}
-            }
 
-            /*
-             * When we get an error we throw away all the output
-             * currently queued.
-             */
+		/*
+		 * An unreportable bypassed message is kept, for the caller of
+		 * Tcl_Seek, Tcl_Write, etc.
+		 */
+	    }
 
-            DiscardOutputQueued(statePtr);
-            continue;
-        } else {
+	    /*
+	     * When we get an error we throw away all the output currently
+	     * queued.
+	     */
+
+	    DiscardOutputQueued(statePtr);
+	    continue;
+	} else {
 	    wroteSome = 1;
 	}
 
-        bufPtr->nextRemoved += written;
+	bufPtr->nextRemoved += written;
 
-        /*
-         * If this buffer is now empty, recycle it.
-         */
+	/*
+	 * If this buffer is now empty, recycle it.
+	 */
 
-        if (bufPtr->nextRemoved == bufPtr->nextAdded) {
-            statePtr->outQueueHead = bufPtr->nextPtr;
-            if (statePtr->outQueueHead == (ChannelBuffer *) NULL) {
-                statePtr->outQueueTail = (ChannelBuffer *) NULL;
-            }
-            RecycleBuffer(statePtr, bufPtr, 0);
-        }
+	if (IsBufferEmpty(bufPtr)) {
+	    statePtr->outQueueHead = bufPtr->nextPtr;
+	    if (statePtr->outQueueHead == NULL) {
+		statePtr->outQueueTail = NULL;
+	    }
+	    RecycleBuffer(statePtr, bufPtr, 0);
+	}
     }	/* Closes "while (1)". */
 
     /*
      * If we wrote some data while flushing in the background, we are done.
-     * We can't finish the background flush until we run out of data and
-     * the channel becomes writable again.  This ensures that all of the
-     * pending data has been flushed at the system level.
+     * We can't finish the background flush until we run out of data and the
+     * channel becomes writable again. This ensures that all of the pending
+     * data has been flushed at the system level.
      */
 
     if (statePtr->flags & BG_FLUSH_SCHEDULED) {
 	if (wroteSome) {
 	    return errorCode;
-	} else if (statePtr->outQueueHead == (ChannelBuffer *) NULL) {
-	    statePtr->flags &= (~(BG_FLUSH_SCHEDULED));
+	} else if (statePtr->outQueueHead == NULL) {
+	    ResetFlag(statePtr, BG_FLUSH_SCHEDULED);
 	    (chanPtr->typePtr->watchProc)(chanPtr->instanceData,
 		    statePtr->interestMask);
 	}
     }
 
     /*
-     * If the channel is flagged as closed, delete it when the refCount
-     * drops to zero, the output queue is empty and there is no output
-     * in the current output buffer.
+     * If the channel is flagged as closed, delete it when the refCount drops
+     * to zero, the output queue is empty and there is no output in the
+     * current output buffer.
      */
 
     if ((statePtr->flags & CHANNEL_CLOSED) && (statePtr->refCount <= 0) &&
-            (statePtr->outQueueHead == (ChannelBuffer *) NULL) &&
-            ((statePtr->curOutPtr == (ChannelBuffer *) NULL) ||
-                    (statePtr->curOutPtr->nextAdded ==
-                            statePtr->curOutPtr->nextRemoved))) {
+	    (statePtr->outQueueHead == NULL) &&
+	    ((statePtr->curOutPtr == NULL) ||
+	    IsBufferEmpty(statePtr->curOutPtr))) {
 	return CloseChannel(interp, chanPtr, errorCode);
     }
     return errorCode;
@@ -2385,34 +2601,33 @@ FlushChannel(interp, chanPtr, calledFromAsyncFlush)
  *
  *	If the channel was stacked, then the it will copy the necessary
  *	elements of the NEXT channel into the TOP channel, in essence
- *	unstacking the channel.  The NEXT channel will then be freed.
+ *	unstacking the channel. The NEXT channel will then be freed.
  *
- *	If the channel was not stacked, then we will free all the bits
- *	for the TOP channel, including the data structure itself.
+ *	If the channel was not stacked, then we will free all the bits for the
+ *	TOP channel, including the data structure itself.
  *
  * Results:
- *	1 if the channel was stacked, 0 otherwise.
+ *	Error code from an unreported error or the driver close operation.
  *
  * Side effects:
- *	May close the actual channel; may free memory.
- *	May change the value of errno.
+ *	May close the actual channel, may free memory, may change the value of
+ *	errno.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-CloseChannel(interp, chanPtr, errorCode)
-    Tcl_Interp *interp;			/* For error reporting. */
-    Channel *chanPtr;			/* The channel to close. */
-    int errorCode;			/* Status of operation so far. */
-{
-    int result = 0;			/* Of calling driver close
-                                         * operation. */
-    ChannelState *statePtr;		/* state of the channel stack. */
+CloseChannel(
+    Tcl_Interp *interp,		/* For error reporting. */
+    Channel *chanPtr,		/* The channel to close. */
+    int errorCode)		/* Status of operation so far. */
+{
+    int result = 0;		/* Of calling driver close operation. */
+    ChannelState *statePtr;	/* State of the channel stack. */
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     if (chanPtr == NULL) {
-        return result;
+	return result;
     }
     statePtr = chanPtr->state;
 
@@ -2426,57 +2641,70 @@ CloseChannel(interp, chanPtr, errorCode)
      * Discard a leftover buffer in the current output buffer field.
      */
 
-    if (statePtr->curOutPtr != (ChannelBuffer *) NULL) {
-        ckfree((char *) statePtr->curOutPtr);
-        statePtr->curOutPtr = (ChannelBuffer *) NULL;
+    if (statePtr->curOutPtr != NULL) {
+	ckfree((char *) statePtr->curOutPtr);
+	statePtr->curOutPtr = NULL;
     }
-    
+
     /*
-     * The caller guarantees that there are no more buffers
-     * queued for output.
+     * The caller guarantees that there are no more buffers queued for output.
      */
 
-    if (statePtr->outQueueHead != (ChannelBuffer *) NULL) {
-        panic("TclFlush, closed channel: queued output left");
+    if (statePtr->outQueueHead != NULL) {
+	Tcl_Panic("TclFlush, closed channel: queued output left");
     }
 
     /*
-     * If the EOF character is set in the channel, append that to the
-     * output device.
+     * If the EOF character is set in the channel, append that to the output
+     * device.
      */
 
     if ((statePtr->outEofChar != 0) && (statePtr->flags & TCL_WRITABLE)) {
-        int dummy;
-        char c;
+	int dummy;
+	char c = (char) statePtr->outEofChar;
 
-        c = (char) statePtr->outEofChar;
-        (chanPtr->typePtr->outputProc) (chanPtr->instanceData, &c, 1, &dummy);
+	(chanPtr->typePtr->outputProc)(chanPtr->instanceData, &c, 1, &dummy);
+    }
+
+    /*
+     * TIP #219, Tcl Channel Reflection API.
+     * Move a leftover error message in the channel bypass into the
+     * interpreter bypass. Just clear it if there is no interpreter.
+     */
+
+    if (statePtr->chanMsg != NULL) {
+	if (interp != NULL) {
+	    Tcl_SetChannelErrorInterp(interp,statePtr->chanMsg);
+	}
+	TclDecrRefCount(statePtr->chanMsg);
+	statePtr->chanMsg = NULL;
     }
 
     /*
      * Remove this channel from of the list of all channels.
      */
-    Tcl_CutChannel((Tcl_Channel) chanPtr);
+
+    CutChannel((Tcl_Channel) chanPtr);
 
     /*
      * Close and free the channel driver state.
+     * This may leave a TIP #219 error message in the interp.
      */
 
     if (chanPtr->typePtr->closeProc != TCL_CLOSE2PROC) {
 	result = (chanPtr->typePtr->closeProc)(chanPtr->instanceData, interp);
     } else {
-	result = (chanPtr->typePtr->close2Proc)(chanPtr->instanceData, interp,
-		0);
+	result = (chanPtr->typePtr->close2Proc)(chanPtr->instanceData,
+		interp, 0);
     }
 
     /*
-     * Some resources can be cleared only if the bottom channel
-     * in a stack is closed. All the other channels in the stack
-     * are not allowed to remove.
+     * Some resources can be cleared only if the bottom channel in a stack is
+     * closed. All the other channels in the stack are not allowed to remove.
      */
 
     if (chanPtr == statePtr->bottomChanPtr) {
-	if (statePtr->channelName != (char *) NULL) {
+	if (statePtr->channelName != NULL) {
 	    ckfree((char *) statePtr->channelName);
 	    statePtr->channelName = NULL;
 	}
@@ -2484,23 +2712,37 @@ CloseChannel(interp, chanPtr, errorCode)
 	Tcl_FreeEncoding(statePtr->encoding);
 	if (statePtr->outputStage != NULL) {
 	    ckfree((char *) statePtr->outputStage);
-	    statePtr->outputStage = (char *) NULL;
+	    statePtr->outputStage = NULL;
 	}
     }
 
     /*
-     * If we are being called synchronously, report either
-     * any latent error on the channel or the current error.
+     * If we are being called synchronously, report either any latent error on
+     * the channel or the current error.
      */
 
     if (statePtr->unreportedError != 0) {
-        errorCode = statePtr->unreportedError;
+	errorCode = statePtr->unreportedError;
+
+	/*
+	 * TIP #219, Tcl Channel Reflection API.
+	 * Move an error message found in the unreported area into the regular
+	 * bypass (interp). This kills any message in the channel bypass area.
+	 */
+
+	if (statePtr->chanMsg != NULL) {
+	    TclDecrRefCount(statePtr->chanMsg);
+	    statePtr->chanMsg = NULL;
+	}
+	if (interp) {
+	    Tcl_SetChannelErrorInterp(interp,statePtr->unreportedMsg);
+	}
     }
     if (errorCode == 0) {
-        errorCode = result;
-        if (errorCode != 0) {
-            Tcl_SetErrno(errorCode);
-        }
+	errorCode = result;
+	if (errorCode != 0) {
+	    Tcl_SetErrno(errorCode);
+	}
     }
 
     /*
@@ -2513,31 +2755,31 @@ CloseChannel(interp, chanPtr, errorCode)
      * Mark the channel as deleted by clearing the type structure.
      */
 
-    if (chanPtr->downChanPtr != (Channel *) NULL) {
+    if (chanPtr->downChanPtr != NULL) {
 	Channel *downChanPtr = chanPtr->downChanPtr;
 
-	statePtr->nextCSPtr	= tsdPtr->firstCSPtr;
-	tsdPtr->firstCSPtr	= statePtr;
+	statePtr->nextCSPtr = tsdPtr->firstCSPtr;
+	tsdPtr->firstCSPtr = statePtr;
 
-	statePtr->topChanPtr	= downChanPtr;
-	downChanPtr->upChanPtr	= (Channel *) NULL;
-	chanPtr->typePtr	= NULL;
+	statePtr->topChanPtr = downChanPtr;
+	downChanPtr->upChanPtr = NULL;
+	chanPtr->typePtr = NULL;
 
-	Tcl_EventuallyFree((ClientData) chanPtr, TCL_DYNAMIC);
+	Tcl_EventuallyFree(chanPtr, TCL_DYNAMIC);
 	return Tcl_Close(interp, (Tcl_Channel) downChanPtr);
     }
 
     /*
-     * There is only the TOP Channel, so we free the remaining
-     * pointers we have and then ourselves.  Since this is the
-     * last of the channels in the stack, make sure to free the
-     * ChannelState structure associated with it.  We use
-     * Tcl_EventuallyFree to allow for any last
+     * There is only the TOP Channel, so we free the remaining pointers we
+     * have and then ourselves. Since this is the last of the channels in the
+     * stack, make sure to free the ChannelState structure associated with it.
+     * We use Tcl_EventuallyFree to allow for any last references.
      */
+
     chanPtr->typePtr = NULL;
 
-    Tcl_EventuallyFree((ClientData) statePtr, TCL_DYNAMIC);
-    Tcl_EventuallyFree((ClientData) chanPtr, TCL_DYNAMIC);
+    Tcl_EventuallyFree(statePtr, TCL_DYNAMIC);
+    Tcl_EventuallyFree(chanPtr, TCL_DYNAMIC);
 
     return errorCode;
 }
@@ -2546,10 +2788,10 @@ CloseChannel(interp, chanPtr, errorCode)
  *----------------------------------------------------------------------
  *
  * Tcl_CutChannel --
+ * CutChannel --
  *
- *	Removes a channel from the (thread-)global list of all channels
- *	(in that thread).  This is actually the statePtr for the stack
- *	of channel.
+ *	Removes a channel from the (thread-)global list of all channels (in
+ *	that thread). This is actually the statePtr for the stack of channel.
  *
  * Results:
  *	Nothing.
@@ -2558,56 +2800,107 @@ CloseChannel(interp, chanPtr, errorCode)
  *	Resets the field 'nextCSPtr' of the specified channel state to NULL.
  *
  * NOTE:
- *	The channel to cut out of the list must not be referenced
- *	in any interpreter. This is something this procedure cannot
- *	check (despite the refcount) because the caller usually wants
- *	fiddle with the channel (like transfering it to a different
- *	thread) and thus keeps the refcount artifically high to prevent
- *	its destruction.
+ *	The channel to cut out of the list must not be referenced in any
+ *	interpreter. This is something this procedure cannot check (despite
+ *	the refcount) because the caller usually wants fiddle with the channel
+ *	(like transfering it to a different thread) and thus keeps the
+ *	refcount artifically high to prevent its destruction.
  *
  *----------------------------------------------------------------------
  */
 
-void
-Tcl_CutChannel(chan)
-    Tcl_Channel chan;			/* The channel being removed. Must
-                                         * not be referenced in any
-                                         * interpreter. */
-{
-    ThreadSpecificData* tsdPtr  = TCL_TSD_INIT(&dataKey);
-    ChannelState *prevCSPtr;		/* Preceding channel state in list of
-                                         * all states - used to splice a
-                                         * channel out of the list on close. */
+static void
+CutChannel(
+    Tcl_Channel chan)		/* The channel being removed. Must not be
+				 * referenced in any interpreter. */
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ChannelState *prevCSPtr;	/* Preceding channel state in list of all
+				 * states - used to splice a channel out of
+				 * the list on close. */
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* state of the channel stack. */
+				/* State of the channel stack. */
     Tcl_DriverThreadActionProc *threadActionProc;
 
     /*
-     * Remove this channel from of the list of all channels
-     * (in the current thread).
+     * Remove this channel from of the list of all channels (in the current
+     * thread).
      */
 
     if (tsdPtr->firstCSPtr && (statePtr == tsdPtr->firstCSPtr)) {
-        tsdPtr->firstCSPtr = statePtr->nextCSPtr;
+	tsdPtr->firstCSPtr = statePtr->nextCSPtr;
     } else {
-        for (prevCSPtr = tsdPtr->firstCSPtr;
-	     prevCSPtr && (prevCSPtr->nextCSPtr != statePtr);
-	     prevCSPtr = prevCSPtr->nextCSPtr) {
-            /* Empty loop body. */
-        }
-        if (prevCSPtr == (ChannelState *) NULL) {
-            panic("FlushChannel: damaged channel list");
-        }
-        prevCSPtr->nextCSPtr = statePtr->nextCSPtr;
+	for (prevCSPtr = tsdPtr->firstCSPtr;
+		prevCSPtr && (prevCSPtr->nextCSPtr != statePtr);
+		prevCSPtr = prevCSPtr->nextCSPtr) {
+	    /* Empty loop body. */
+	}
+	if (prevCSPtr == NULL) {
+	    Tcl_Panic("FlushChannel: damaged channel list");
+	}
+	prevCSPtr->nextCSPtr = statePtr->nextCSPtr;
     }
 
-    statePtr->nextCSPtr = (ChannelState *) NULL;
+    statePtr->nextCSPtr = NULL;
 
-    /* TIP #218, Channel Thread Actions */
-    threadActionProc = Tcl_ChannelThreadActionProc (Tcl_GetChannelType (chan));
+    /*
+     * TIP #218, Channel Thread Actions
+     */
+
+    threadActionProc = Tcl_ChannelThreadActionProc(Tcl_GetChannelType(chan));
     if (threadActionProc != NULL) {
-        (*threadActionProc) (Tcl_GetChannelInstanceData(chan),
-			     TCL_CHANNEL_THREAD_REMOVE);
+	(*threadActionProc)(Tcl_GetChannelInstanceData(chan),
+		TCL_CHANNEL_THREAD_REMOVE);
+    }
+}
+
+void
+Tcl_CutChannel(
+    Tcl_Channel chan)		/* The channel being added. Must not be
+				 * referenced in any interpreter. */
+{
+    Channel *chanPtr = ((Channel *) chan)->state->bottomChanPtr;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ChannelState *prevCSPtr;	/* Preceding channel state in list of all
+				 * states - used to splice a channel out of
+				 * the list on close. */
+    ChannelState *statePtr = chanPtr->state;
+				/* State of the channel stack. */
+    Tcl_DriverThreadActionProc *threadActionProc;
+
+    /*
+     * Remove this channel from of the list of all channels (in the current
+     * thread).
+     */
+
+    if (tsdPtr->firstCSPtr && (statePtr == tsdPtr->firstCSPtr)) {
+	tsdPtr->firstCSPtr = statePtr->nextCSPtr;
+    } else {
+	for (prevCSPtr = tsdPtr->firstCSPtr;
+		prevCSPtr && (prevCSPtr->nextCSPtr != statePtr);
+		prevCSPtr = prevCSPtr->nextCSPtr) {
+	    /* Empty loop body. */
+	}
+	if (prevCSPtr == NULL) {
+	    Tcl_Panic("FlushChannel: damaged channel list");
+	}
+	prevCSPtr->nextCSPtr = statePtr->nextCSPtr;
+    }
+
+    statePtr->nextCSPtr = NULL;
+
+    /*
+     * TIP #218, Channel Thread Actions
+     * For all transformations and the base channel.
+     */
+
+    while (chanPtr) {
+	threadActionProc = Tcl_ChannelThreadActionProc(chanPtr->typePtr);
+	if (threadActionProc != NULL) {
+	    (*threadActionProc)(chanPtr->instanceData,
+		    TCL_CHANNEL_THREAD_REMOVE);
+	}
+	chanPtr= chanPtr->upChanPtr;
     }
 }
 
@@ -2615,10 +2908,11 @@ Tcl_CutChannel(chan)
  *----------------------------------------------------------------------
  *
  * Tcl_SpliceChannel --
+ * SpliceChannel --
  *
- *	Adds a channel to the (thread-)global list of all channels
- *	(in that thread). Expects that the field 'nextChanPtr' in
- *	the channel is set to NULL.
+ *	Adds a channel to the (thread-)global list of all channels (in that
+ *	thread). Expects that the field 'nextChanPtr' in the channel is set to
+ *	NULL.
  *
  * Results:
  *	Nothing.
@@ -2628,45 +2922,86 @@ Tcl_CutChannel(chan)
  *
  * NOTE:
  *	The channel to splice into the list must not be referenced in any
- *	interpreter. This is something this procedure cannot check
- *	(despite the refcount) because the caller usually wants figgle
- *	with the channel (like transfering it to a different thread)
- *	and thus keeps the refcount artifically high to prevent its
- *	destruction.
+ *	interpreter. This is something this procedure cannot check (despite
+ *	the refcount) because the caller usually wants figgle with the channel
+ *	(like transfering it to a different thread) and thus keeps the
+ *	refcount artifically high to prevent its destruction.
  *
  *----------------------------------------------------------------------
  */
 
-void
-Tcl_SpliceChannel(chan)
-    Tcl_Channel chan;			/* The channel being added. Must
-                                         * not be referenced in any
-                                         * interpreter. */
+static void
+SpliceChannel(
+    Tcl_Channel chan)		/* The channel being added. Must not be
+				 * referenced in any interpreter. */
 {
-    ThreadSpecificData	*tsdPtr = TCL_TSD_INIT(&dataKey);
-    ChannelState	*statePtr = ((Channel *) chan)->state;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ChannelState *statePtr = ((Channel *) chan)->state;
     Tcl_DriverThreadActionProc *threadActionProc;
 
-    if (statePtr->nextCSPtr != (ChannelState *) NULL) {
-        panic("Tcl_SpliceChannel: trying to add channel used in different list");
+    if (statePtr->nextCSPtr != NULL) {
+	Tcl_Panic("SpliceChannel: trying to add channel used in different list");
     }
 
-    statePtr->nextCSPtr	= tsdPtr->firstCSPtr;
-    tsdPtr->firstCSPtr	= statePtr;
+    statePtr->nextCSPtr = tsdPtr->firstCSPtr;
+    tsdPtr->firstCSPtr = statePtr;
 
     /*
-     * TIP #10. Mark the current thread as the new one managing this
-     *          channel. Note: 'Tcl_GetCurrentThread' returns sensible
-     *          values even for a non-threaded core.
+     * TIP #10. Mark the current thread as the new one managing this channel.
+     *		Note: 'Tcl_GetCurrentThread' returns sensible values even for
+     *		a non-threaded core.
      */
 
-    statePtr->managingThread = Tcl_GetCurrentThread ();
+    statePtr->managingThread = Tcl_GetCurrentThread();
+
+    /*
+     * TIP #218, Channel Thread Actions
+     */
 
-    /* TIP #218, Channel Thread Actions */
-    threadActionProc = Tcl_ChannelThreadActionProc (Tcl_GetChannelType (chan));
+    threadActionProc = Tcl_ChannelThreadActionProc(Tcl_GetChannelType(chan));
     if (threadActionProc != NULL) {
-        (*threadActionProc) (Tcl_GetChannelInstanceData(chan),
-			     TCL_CHANNEL_THREAD_INSERT);
+	(*threadActionProc) (Tcl_GetChannelInstanceData(chan),
+		TCL_CHANNEL_THREAD_INSERT);
+    }
+}
+
+void
+Tcl_SpliceChannel(
+    Tcl_Channel chan)		/* The channel being added. Must not be
+				 * referenced in any interpreter. */
+{
+    Channel *chanPtr = ((Channel *) chan)->state->bottomChanPtr;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ChannelState *statePtr = chanPtr->state;
+    Tcl_DriverThreadActionProc *threadActionProc;
+
+    if (statePtr->nextCSPtr != NULL) {
+	Tcl_Panic("SpliceChannel: trying to add channel used in different list");
+    }
+
+    statePtr->nextCSPtr = tsdPtr->firstCSPtr;
+    tsdPtr->firstCSPtr = statePtr;
+
+    /*
+     * TIP #10. Mark the current thread as the new one managing this channel.
+     *		Note: 'Tcl_GetCurrentThread' returns sensible values even for
+     *		a non-threaded core.
+     */
+
+    statePtr->managingThread = Tcl_GetCurrentThread();
+
+    /*
+     * TIP #218, Channel Thread Actions
+     * For all transformations and the base channel.
+     */
+
+    while (chanPtr) {
+	threadActionProc = Tcl_ChannelThreadActionProc(chanPtr->typePtr);
+	if (threadActionProc != NULL) {
+	    (*threadActionProc)(chanPtr->instanceData,
+		    TCL_CHANNEL_THREAD_INSERT);
+	}
+	chanPtr= chanPtr->upChanPtr;
     }
 }
 
@@ -2685,29 +3020,30 @@ Tcl_SpliceChannel(chan)
  *
  * NOTE:
  *	Tcl_Close removes the channel as far as the user is concerned.
- *	However, it may continue to exist for a while longer if it has
- *	a background flush scheduled. The device itself is eventually
- *	closed and the channel record removed, in CloseChannel, above.
+ *	However, it may continue to exist for a while longer if it has a
+ *	background flush scheduled. The device itself is eventually closed and
+ *	the channel record removed, in CloseChannel, above.
  *
  *----------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 int
-Tcl_Close(interp, chan)
-    Tcl_Interp *interp;			/* Interpreter for errors. */
-    Tcl_Channel chan;			/* The channel being closed. Must
-                                         * not be referenced in any
-                                         * interpreter. */
-{
-    CloseCallback *cbPtr;		/* Iterate over close callbacks
-                                         * for this channel. */
-    Channel *chanPtr;			/* The real IO channel. */
-    ChannelState *statePtr;		/* State of real IO channel. */
-    int result;				/* Of calling FlushChannel. */
+Tcl_Close(
+    Tcl_Interp *interp,		/* Interpreter for errors. */
+    Tcl_Channel chan)		/* The channel being closed. Must not be
+				 * referenced in any interpreter. */
+{
+    CloseCallback *cbPtr;	/* Iterate over close callbacks for this
+				 * channel. */
+    Channel *chanPtr;		/* The real IO channel. */
+    ChannelState *statePtr;	/* State of real IO channel. */
+    int result;			/* Of calling FlushChannel. */
+    int flushcode;
+    int stickyError;
 
-    if (chan == (Tcl_Channel) NULL) {
-        return TCL_OK;
+    if (chan == NULL) {
+	return TCL_OK;
     }
 
     /*
@@ -2724,32 +3060,50 @@ Tcl_Close(interp, chan)
      * This operation should occur at the top of a channel stack.
      */
 
-    chanPtr	= (Channel *) chan;
-    statePtr	= chanPtr->state;
-    chanPtr	= statePtr->topChanPtr;
+    chanPtr = (Channel *) chan;
+    statePtr = chanPtr->state;
+    chanPtr = statePtr->topChanPtr;
 
     if (statePtr->refCount > 0) {
-        panic("called Tcl_Close on channel with refCount > 0");
+	Tcl_Panic("called Tcl_Close on channel with refCount > 0");
     }
- 
+
     if (statePtr->flags & CHANNEL_INCLOSE) {
 	if (interp) {
-            Tcl_AppendResult(interp,
-	    "Illegal recursive call to close through close-handler of channel",
-	    (char *) NULL);
+	    Tcl_AppendResult(interp, "Illegal recursive call to close "
+		    "through close-handler of channel", NULL);
 	}
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    statePtr->flags |= CHANNEL_INCLOSE;
+    SetFlag(statePtr, CHANNEL_INCLOSE);
 
     /*
      * When the channel has an escape sequence driven encoding such as
      * iso2022, the terminated escape sequence must write to the buffer.
      */
+
+    stickyError = 0;
+
     if ((statePtr->encoding != NULL) && (statePtr->curOutPtr != NULL)
 	    && (CheckChannelErrors(statePtr, TCL_WRITABLE) == 0)) {
-        statePtr->outputEncodingFlags |= TCL_ENCODING_END;
-        WriteChars(chanPtr, "", 0);
+	statePtr->outputEncodingFlags |= TCL_ENCODING_END;
+	if (WriteChars(chanPtr, "", 0) < 0) {
+	    stickyError = Tcl_GetErrno();
+	}
+
+	/*
+	 * TIP #219, Tcl Channel Reflection API.
+	 * Move an error message found in the channel bypass into the
+	 * interpreter bypass. Just clear it if there is no interpreter.
+	 */
+
+	if (statePtr->chanMsg != NULL) {
+	    if (interp != NULL) {
+		Tcl_SetChannelErrorInterp(interp,statePtr->chanMsg);
+	    }
+	    TclDecrRefCount(statePtr->chanMsg);
+	    statePtr->chanMsg = NULL;
+	}
     }
 
     Tcl_ClearChannelHandlers(chan);
@@ -2758,27 +3112,26 @@ Tcl_Close(interp, chan)
      * Invoke the registered close callbacks and delete their records.
      */
 
-    while (statePtr->closeCbPtr != (CloseCallback *) NULL) {
-        cbPtr = statePtr->closeCbPtr;
-        statePtr->closeCbPtr = cbPtr->nextPtr;
-        (cbPtr->proc) (cbPtr->clientData);
-        ckfree((char *) cbPtr);
+    while (statePtr->closeCbPtr != NULL) {
+	cbPtr = statePtr->closeCbPtr;
+	statePtr->closeCbPtr = cbPtr->nextPtr;
+	(cbPtr->proc)(cbPtr->clientData);
+	ckfree((char *) cbPtr);
     }
 
-    statePtr->flags &= ~CHANNEL_INCLOSE;
+    ResetFlag(statePtr, CHANNEL_INCLOSE);
 
     /*
      * Ensure that the last output buffer will be flushed.
      */
-    
-    if ((statePtr->curOutPtr != (ChannelBuffer *) NULL) &&
-	    (statePtr->curOutPtr->nextAdded > statePtr->curOutPtr->nextRemoved)) {
-        statePtr->flags |= BUFFER_READY;
+
+    if ((statePtr->curOutPtr != NULL) && IsBufferReady(statePtr->curOutPtr)) {
+	SetFlag(statePtr, BUFFER_READY);
     }
 
     /*
-     * If this channel supports it, close the read side, since we don't need it
-     * anymore and this will help avoid deadlocks on some channel types.
+     * If this channel supports it, close the read side, since we don't need
+     * it anymore and this will help avoid deadlocks on some channel types.
      */
 
     if (chanPtr->typePtr->closeProc == TCL_CLOSE2PROC) {
@@ -2789,14 +3142,42 @@ Tcl_Close(interp, chan)
     }
 
     /*
-     * The call to FlushChannel will flush any queued output and invoke
-     * the close function of the channel driver, or it will set up the
-     * channel to be flushed and closed asynchronously.
+     * The call to FlushChannel will flush any queued output and invoke the
+     * close function of the channel driver, or it will set up the channel to
+     * be flushed and closed asynchronously.
+     */
+
+    SetFlag(statePtr, CHANNEL_CLOSED);
+
+    flushcode = FlushChannel(interp, chanPtr, 0);
+
+    /*
+     * TIP #219.
+     * Capture error messages put by the driver into the bypass area and put
+     * them into the regular interpreter result.
+     *
+     * Notes: Due to the assertion of CHANNEL_CLOSED in the flags
+     * FlushChannel() has called CloseChannel() and thus freed all the channel
+     * structures. We must not try to access "chan" anymore, hence the NULL
+     * argument in the call below. The only place which may still contain a
+     * message is the interpreter itself, and "CloseChannel" made sure to lift
+     * any channel message it generated into it.
      */
 
-    statePtr->flags |= CHANNEL_CLOSED;
-    if ((FlushChannel(interp, chanPtr, 0) != 0) || (result != 0)) {
-        return TCL_ERROR;
+    if (TclChanCaughtErrorBypass(interp, NULL)) {
+	result = EINVAL;
+    }
+
+    if (stickyError != 0) {
+	Tcl_SetErrno(stickyError);
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp,
+			     Tcl_NewStringObj(Tcl_PosixError(interp), -1));
+	}
+	flushcode = -1;
+    }
+    if ((flushcode != 0) || (result != 0)) {
+	return TCL_ERROR;
     }
     return TCL_OK;
 }
@@ -2820,8 +3201,8 @@ Tcl_Close(interp, chan)
  */
 
 void
-Tcl_ClearChannelHandlers (channel)
-    Tcl_Channel channel;
+Tcl_ClearChannelHandlers(
+    Tcl_Channel channel)
 {
     ChannelHandler *chPtr, *chNext;	/* Iterate over channel handlers. */
     EventScriptRecord *ePtr, *eNextPtr;	/* Iterate over eventscript records. */
@@ -2834,9 +3215,9 @@ Tcl_ClearChannelHandlers (channel)
      * This operation should occur at the top of a channel stack.
      */
 
-    chanPtr	= (Channel *) channel;
-    statePtr	= chanPtr->state;
-    chanPtr	= statePtr->topChanPtr;
+    chanPtr = (Channel *) channel;
+    statePtr = chanPtr->state;
+    chanPtr = statePtr->topChanPtr;
 
     /*
      * Cancel any outstanding timer.
@@ -2845,31 +3226,27 @@ Tcl_ClearChannelHandlers (channel)
     Tcl_DeleteTimerHandler(statePtr->timer);
 
     /*
-     * Remove any references to channel handlers for this channel that
-     * may be about to be invoked.
+     * Remove any references to channel handlers for this channel that may be
+     * about to be invoked.
      */
 
-    for (nhPtr = tsdPtr->nestedHandlerPtr;
-	 nhPtr != (NextChannelHandler *) NULL;
-	 nhPtr = nhPtr->nestedHandlerPtr) {
-        if (nhPtr->nextHandlerPtr &&
+    for (nhPtr = tsdPtr->nestedHandlerPtr; nhPtr != NULL;
+	    nhPtr = nhPtr->nestedHandlerPtr) {
+	if (nhPtr->nextHandlerPtr &&
 		(nhPtr->nextHandlerPtr->chanPtr == chanPtr)) {
 	    nhPtr->nextHandlerPtr = NULL;
-        }
+	}
     }
 
     /*
-     * Remove all the channel handler records attached to the channel
-     * itself.
+     * Remove all the channel handler records attached to the channel itself.
      */
 
-    for (chPtr = statePtr->chPtr;
-	 chPtr != (ChannelHandler *) NULL;
-	 chPtr = chNext) {
-        chNext = chPtr->nextPtr;
-        ckfree((char *) chPtr);
+    for (chPtr = statePtr->chPtr; chPtr != NULL; chPtr = chNext) {
+	chNext = chPtr->nextPtr;
+	ckfree((char *) chPtr);
     }
-    statePtr->chPtr = (ChannelHandler *) NULL;
+    statePtr->chPtr = NULL;
 
     /*
      * Cancel any pending copy operation.
@@ -2891,14 +3268,12 @@ Tcl_ClearChannelHandlers (channel)
      * Remove any EventScript records for this channel.
      */
 
-    for (ePtr = statePtr->scriptRecordPtr;
-	 ePtr != (EventScriptRecord *) NULL;
-	 ePtr = eNextPtr) {
-        eNextPtr = ePtr->nextPtr;
-	Tcl_DecrRefCount(ePtr->scriptPtr);
-        ckfree((char *) ePtr);
+    for (ePtr = statePtr->scriptRecordPtr; ePtr != NULL; ePtr = eNextPtr) {
+	eNextPtr = ePtr->nextPtr;
+	TclDecrRefCount(ePtr->scriptPtr);
+	ckfree((char *) ePtr);
     }
-    statePtr->scriptRecordPtr = (EventScriptRecord *) NULL;
+    statePtr->scriptRecordPtr = NULL;
 }
 
 /*
@@ -2906,11 +3281,11 @@ Tcl_ClearChannelHandlers (channel)
  *
  * Tcl_Write --
  *
- *	Puts a sequence of bytes into an output buffer, may queue the
- *	buffer for output if it gets full, and also remembers whether the
- *	current buffer is ready e.g. if it contains a newline and we are in
- *	line buffering mode. Compensates stacking, i.e. will redirect the
- *	data from the specified channel to the topmost channel in a stack.
+ *	Puts a sequence of bytes into an output buffer, may queue the buffer
+ *	for output if it gets full, and also remembers whether the current
+ *	buffer is ready e.g. if it contains a newline and we are in line
+ *	buffering mode. Compensates stacking, i.e. will redirect the data from
+ *	the specified channel to the topmost channel in a stack.
  *
  *	No encoding conversions are applied to the bytes being read.
  *
@@ -2926,27 +3301,28 @@ Tcl_ClearChannelHandlers (channel)
  */
 
 int
-Tcl_Write(chan, src, srcLen)
-    Tcl_Channel chan;			/* The channel to buffer output for. */
-    CONST char *src;			/* Data to queue in output buffer. */
-    int srcLen;				/* Length of data in bytes, or < 0 for
-					 * strlen(). */
+Tcl_Write(
+    Tcl_Channel chan,		/* The channel to buffer output for. */
+    const char *src,		/* Data to queue in output buffer. */
+    int srcLen)			/* Length of data in bytes, or < 0 for
+				 * strlen(). */
 {
     /*
      * Always use the topmost channel of the stack
      */
+
     Channel *chanPtr;
-    ChannelState *statePtr;	/* state info for channel */
+    ChannelState *statePtr;	/* State info for channel */
 
     statePtr = ((Channel *) chan)->state;
-    chanPtr  = statePtr->topChanPtr;
+    chanPtr = statePtr->topChanPtr;
 
     if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
 	return -1;
     }
 
     if (srcLen < 0) {
-        srcLen = strlen(src);
+	srcLen = strlen(src);
     }
     return DoWrite(chanPtr, src, srcLen);
 }
@@ -2956,11 +3332,11 @@ Tcl_Write(chan, src, srcLen)
  *
  * Tcl_WriteRaw --
  *
- *	Puts a sequence of bytes into an output buffer, may queue the
- *	buffer for output if it gets full, and also remembers whether the
- *	current buffer is ready e.g. if it contains a newline and we are in
- *	line buffering mode. Writes directly to the driver of the channel,
- *	does not compensate for stacking.
+ *	Puts a sequence of bytes into an output buffer, may queue the buffer
+ *	for output if it gets full, and also remembers whether the current
+ *	buffer is ready e.g. if it contains a newline and we are in line
+ *	buffering mode. Writes directly to the driver of the channel, does not
+ *	compensate for stacking.
  *
  *	No encoding conversions are applied to the bytes being read.
  *
@@ -2976,14 +3352,15 @@ Tcl_Write(chan, src, srcLen)
  */
 
 int
-Tcl_WriteRaw(chan, src, srcLen)
-    Tcl_Channel chan;			/* The channel to buffer output for. */
-    CONST char *src;			/* Data to queue in output buffer. */
-    int srcLen;				/* Length of data in bytes, or < 0 for
-					 * strlen(). */
+Tcl_WriteRaw(
+    Tcl_Channel chan,		/* The channel to buffer output for. */
+    const char *src,		/* Data to queue in output buffer. */
+    int srcLen)			/* Length of data in bytes, or < 0 for
+				 * strlen(). */
 {
     Channel *chanPtr = ((Channel *) chan);
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     int errorCode, written;
 
     if (CheckChannelErrors(statePtr, TCL_WRITABLE | CHANNEL_RAW_MODE) != 0) {
@@ -2991,7 +3368,7 @@ Tcl_WriteRaw(chan, src, srcLen)
     }
 
     if (srcLen < 0) {
-        srcLen = strlen(src);
+	srcLen = strlen(src);
     }
 
     /*
@@ -3015,11 +3392,11 @@ Tcl_WriteRaw(chan, src, srcLen)
  * Tcl_WriteChars --
  *
  *	Takes a sequence of UTF-8 characters and converts them for output
- *	using the channel's current encoding, may queue the buffer for
- *	output if it gets full, and also remembers whether the current
- *	buffer is ready e.g. if it contains a newline and we are in
- *	line buffering mode. Compensates stacking, i.e. will redirect the
- *	data from the specified channel to the topmost channel in a stack.
+ *	using the channel's current encoding, may queue the buffer for output
+ *	if it gets full, and also remembers whether the current buffer is
+ *	ready e.g. if it contains a newline and we are in line buffering
+ *	mode. Compensates stacking, i.e. will redirect the data from the
+ *	specified channel to the topmost channel in a stack.
  *
  * Results:
  *	The number of bytes written or -1 in case of error. If -1,
@@ -3033,13 +3410,14 @@ Tcl_WriteRaw(chan, src, srcLen)
  */
 
 int
-Tcl_WriteChars(chan, src, len)
-    Tcl_Channel chan;		/* The channel to buffer output for. */
-    CONST char *src;		/* UTF-8 characters to queue in output buffer. */
-    int len;			/* Length of string in bytes, or < 0 for 
+Tcl_WriteChars(
+    Tcl_Channel chan,		/* The channel to buffer output for. */
+    const char *src,		/* UTF-8 characters to queue in output
+				 * buffer. */
+    int len)			/* Length of string in bytes, or < 0 for
 				 * strlen(). */
 {
-    ChannelState *statePtr;	/* state info for channel */
+    ChannelState *statePtr;	/* State info for channel */
 
     statePtr = ((Channel *) chan)->state;
 
@@ -3047,7 +3425,7 @@ Tcl_WriteChars(chan, src, len)
 	return -1;
     }
 
-    return DoWriteChars ((Channel*) chan, src, len);
+    return DoWriteChars((Channel *) chan, src, len);
 }
 
 /*
@@ -3056,11 +3434,11 @@ Tcl_WriteChars(chan, src, len)
  * DoWriteChars --
  *
  *	Takes a sequence of UTF-8 characters and converts them for output
- *	using the channel's current encoding, may queue the buffer for
- *	output if it gets full, and also remembers whether the current
- *	buffer is ready e.g. if it contains a newline and we are in
- *	line buffering mode. Compensates stacking, i.e. will redirect the
- *	data from the specified channel to the topmost channel in a stack.
+ *	using the channel's current encoding, may queue the buffer for output
+ *	if it gets full, and also remembers whether the current buffer is
+ *	ready e.g. if it contains a newline and we are in line buffering mode.
+ *	Compensates stacking, i.e. will redirect the data from the specified
+ *	channel to the topmost channel in a stack.
  *
  * Results:
  *	The number of bytes written or -1 in case of error. If -1,
@@ -3074,36 +3452,43 @@ Tcl_WriteChars(chan, src, len)
  */
 
 static int
-DoWriteChars(chanPtr, src, len)
-    Channel* chanPtr;		/* The channel to buffer output for. */
-    CONST char *src;		/* UTF-8 characters to queue in output buffer. */
-    int len;			/* Length of string in bytes, or < 0 for 
+DoWriteChars(
+    Channel *chanPtr,		/* The channel to buffer output for. */
+    const char *src,		/* UTF-8 characters to queue in output
+				 * buffer. */
+    int len)			/* Length of string in bytes, or < 0 for
 				 * strlen(). */
 {
     /*
      * Always use the topmost channel of the stack
      */
-    ChannelState *statePtr;	/* state info for channel */
+
+    ChannelState *statePtr;	/* State info for channel */
 
     statePtr = chanPtr->state;
-    chanPtr  = statePtr->topChanPtr;
+    chanPtr = statePtr->topChanPtr;
 
     if (len < 0) {
-        len = strlen(src);
+	len = strlen(src);
     }
     if (statePtr->encoding == NULL) {
 	/*
-	 * Inefficient way to convert UTF-8 to byte-array, but the  
-	 * code parallels the way it is done for objects.
+	 * Inefficient way to convert UTF-8 to byte-array, but the code
+	 * parallels the way it is done for objects.
+	 * Special case for 1-byte (used by eg [puts] for the \n) could
+	 * be extended to more efficient translation of the src string.
 	 */
 
-	Tcl_Obj *objPtr;
-	int result;
+ 	int result;
 
-	objPtr = Tcl_NewStringObj(src, len);
-	src = (char *) Tcl_GetByteArrayFromObj(objPtr, &len);
-	result = WriteBytes(chanPtr, src, len);
-	Tcl_DecrRefCount(objPtr);
+	if ((len == 1) && (UCHAR(*src) < 0xC0)) {
+	    result = WriteBytes(chanPtr, src, len);
+	} else {
+	    Tcl_Obj *objPtr = Tcl_NewStringObj(src, len);
+	    src = (char *) Tcl_GetByteArrayFromObj(objPtr, &len);
+	    result = WriteBytes(chanPtr, src, len);
+	    TclDecrRefCount(objPtr);
+	}
 	return result;
     }
     return WriteChars(chanPtr, src, len);
@@ -3114,17 +3499,17 @@ DoWriteChars(chanPtr, src, len)
  *
  * Tcl_WriteObj --
  *
- *	Takes the Tcl object and queues its contents for output.  If the 
- *	encoding of the channel is NULL, takes the byte-array representation 
- *	of the object and queues those bytes for output.  Otherwise, takes 
- *	the characters in the UTF-8 (string) representation of the object 
- *	and converts them for output using the channel's current encoding.  
- *	May flush internal buffers to output if one becomes full or is ready 
- *	for some other reason, e.g. if it contains a newline and the channel 
- *	is in line buffering mode.
+ *	Takes the Tcl object and queues its contents for output. If the
+ *	encoding of the channel is NULL, takes the byte-array representation
+ *	of the object and queues those bytes for output. Otherwise, takes the
+ *	characters in the UTF-8 (string) representation of the object and
+ *	converts them for output using the channel's current encoding. May
+ *	flush internal buffers to output if one becomes full or is ready for
+ *	some other reason, e.g. if it contains a newline and the channel is in
+ *	line buffering mode.
  *
  * Results:
- *	The number of bytes written or -1 in case of error. If -1, 
+ *	The number of bytes written or -1 in case of error. If -1,
  *	Tcl_GetErrno() will return the error code.
  *
  * Side effects:
@@ -3135,20 +3520,21 @@ DoWriteChars(chanPtr, src, len)
  */
 
 int
-Tcl_WriteObj(chan, objPtr)
-    Tcl_Channel chan;		/* The channel to buffer output for. */
-    Tcl_Obj *objPtr;		/* The object to write. */
+Tcl_WriteObj(
+    Tcl_Channel chan,		/* The channel to buffer output for. */
+    Tcl_Obj *objPtr)		/* The object to write. */
 {
     /*
      * Always use the topmost channel of the stack
      */
+
     Channel *chanPtr;
-    ChannelState *statePtr;	/* state info for channel */
+    ChannelState *statePtr;	/* State info for channel */
     char *src;
     int srcLen;
 
     statePtr = ((Channel *) chan)->state;
-    chanPtr  = statePtr->topChanPtr;
+    chanPtr = statePtr->topChanPtr;
 
     if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
 	return -1;
@@ -3157,7 +3543,7 @@ Tcl_WriteObj(chan, objPtr)
 	src = (char *) Tcl_GetByteArrayFromObj(objPtr, &srcLen);
 	return WriteBytes(chanPtr, src, srcLen);
     } else {
-	src = Tcl_GetStringFromObj(objPtr, &srcLen);
+	src = TclGetStringFromObj(objPtr, &srcLen);
 	return WriteChars(chanPtr, src, srcLen);
     }
 }
@@ -3167,10 +3553,10 @@ Tcl_WriteObj(chan, objPtr)
  *
  * WriteBytes --
  *
- *	Write a sequence of bytes into an output buffer, may queue the
- *	buffer for output if it gets full, and also remembers whether the
- *	current buffer is ready e.g. if it contains a newline and we are in
- *	line buffering mode.
+ *	Write a sequence of bytes into an output buffer, may queue the buffer
+ *	for output if it gets full, and also remembers whether the current
+ *	buffer is ready e.g. if it contains a newline and we are in line
+ *	buffering mode.
  *
  * Results:
  *	The number of bytes written or -1 in case of error. If -1,
@@ -3184,33 +3570,36 @@ Tcl_WriteObj(chan, objPtr)
  */
 
 static int
-WriteBytes(chanPtr, src, srcLen)
-    Channel *chanPtr;		/* The channel to buffer output for. */
-    CONST char *src;		/* Bytes to write. */
-    int srcLen;			/* Number of bytes to write. */
+WriteBytes(
+    Channel *chanPtr,		/* The channel to buffer output for. */
+    const char *src,		/* Bytes to write. */
+    int srcLen)			/* Number of bytes to write. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr;
     char *dst;
-    int dstMax, sawLF, savedLF, total, dstLen, toWrite;
-    
+    int dstMax, sawLF, savedLF, total, dstLen, toWrite, translate;
+
     total = 0;
     sawLF = 0;
     savedLF = 0;
+    translate = (statePtr->flags & CHANNEL_LINEBUFFERED)
+	|| (statePtr->outputTranslation != TCL_TRANSLATE_LF);
 
     /*
-     * Loop over all bytes in src, storing them in output buffer with
-     * proper EOL translation.
+     * Loop over all bytes in src, storing them in output buffer with proper
+     * EOL translation.
      */
 
     while (srcLen + savedLF > 0) {
 	bufPtr = statePtr->curOutPtr;
 	if (bufPtr == NULL) {
 	    bufPtr = AllocChannelBuffer(statePtr->bufSize);
-	    statePtr->curOutPtr	= bufPtr;
+	    statePtr->curOutPtr = bufPtr;
 	}
-	dst = bufPtr->buf + bufPtr->nextAdded;
-	dstMax = bufPtr->bufLength - bufPtr->nextAdded;
+	dst = InsertPoint(bufPtr);
+	dstMax = SpaceLeft(bufPtr);
 	dstLen = dstMax;
 
 	toWrite = dstLen;
@@ -3218,25 +3607,32 @@ WriteBytes(chanPtr, src, srcLen)
 	    toWrite = srcLen;
 	}
 
-	if (savedLF) {
-	    /*
-	     * A '\n' was left over from last call to TranslateOutputEOL()
-	     * and we need to store it in this buffer.  If the channel is
-	     * line-based, we will need to flush it.
-	     */
+	if (translate) {
+	    if (savedLF) {
+		/*
+		 * A '\n' was left over from last call to TranslateOutputEOL()
+		 * and we need to store it in this buffer. If the channel is
+		 * line-based, we will need to flush it.
+		 */
 
-	    *dst++ = '\n';
-	    dstLen--;
-	    sawLF++;
+		*dst++ = '\n';
+		dstLen--;
+		sawLF++;
+	    }
+	    if (TranslateOutputEOL(statePtr, dst, src, &dstLen, &toWrite)) {
+		sawLF++;
+	    }
+	    dstLen += savedLF;
+	    savedLF = 0;
+	    if (dstLen > dstMax) {
+		savedLF = 1;
+		dstLen = dstMax;
+	    }
+	} else {
+	    memcpy(dst, src, toWrite);
+	    dstLen = toWrite;
 	}
-	sawLF += TranslateOutputEOL(statePtr, dst, src, &dstLen, &toWrite);
-	dstLen += savedLF;
-	savedLF = 0;
 
-	if (dstLen > dstMax) {
-	    savedLF = 1;
-	    dstLen = dstMax;
-	}
 	bufPtr->nextAdded += dstLen;
 	if (CheckFlush(chanPtr, bufPtr, sawLF) != 0) {
 	    return -1;
@@ -3254,11 +3650,10 @@ WriteBytes(chanPtr, src, srcLen)
  *
  * WriteChars --
  *
- *	Convert UTF-8 bytes to the channel's external encoding and
- *	write the produced bytes into an output buffer, may queue the 
- *	buffer for output if it gets full, and also remembers whether the
- *	current buffer is ready e.g. if it contains a newline and we are in
- *	line buffering mode.
+ *	Convert UTF-8 bytes to the channel's external encoding and write the
+ *	produced bytes into an output buffer, may queue the buffer for output
+ *	if it gets full, and also remembers whether the current buffer is
+ *	ready e.g. if it contains a newline and we are in line buffering mode.
  *
  * Results:
  *	The number of bytes written or -1 in case of error. If -1,
@@ -3272,20 +3667,21 @@ WriteBytes(chanPtr, src, srcLen)
  */
 
 static int
-WriteChars(chanPtr, src, srcLen)
-    Channel *chanPtr;		/* The channel to buffer output for. */
-    CONST char *src;		/* UTF-8 string to write. */
-    int srcLen;			/* Length of UTF-8 string in bytes. */
+WriteChars(
+    Channel *chanPtr,		/* The channel to buffer output for. */
+    const char *src,		/* UTF-8 string to write. */
+    int srcLen)			/* Length of UTF-8 string in bytes. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr;
     char *dst, *stage;
     int saved, savedLF, sawLF, total, dstLen, stageMax, dstWrote;
     int stageLen, toWrite, stageRead, endEncoding, result;
-    int consumedSomething;
+    int consumedSomething, translate;
     Tcl_Encoding encoding;
     char safe[BUFFER_PADDING];
-    
+
     total = 0;
     sawLF = 0;
     savedLF = 0;
@@ -3298,6 +3694,9 @@ WriteChars(chanPtr, src, srcLen)
 
     endEncoding = ((statePtr->outputEncodingFlags & TCL_ENCODING_END) != 0);
 
+    translate = (statePtr->flags & CHANNEL_LINEBUFFERED)
+	|| (statePtr->outputTranslation != TCL_TRANSLATE_LF);
+
     /*
      * Loop over all UTF-8 characters in src, storing them in staging buffer
      * with proper EOL translation.
@@ -3305,7 +3704,7 @@ WriteChars(chanPtr, src, srcLen)
 
     consumedSomething = 1;
     while (consumedSomething && (srcLen + savedLF + endEncoding > 0)) {
-        consumedSomething = 0;
+	consumedSomething = 0;
 	stage = statePtr->outputStage;
 	stageMax = statePtr->bufSize;
 	stageLen = stageMax;
@@ -3315,27 +3714,34 @@ WriteChars(chanPtr, src, srcLen)
 	    toWrite = srcLen;
 	}
 
-	if (savedLF) {
-	    /*
-	     * A '\n' was left over from last call to TranslateOutputEOL()
-	     * and we need to store it in the staging buffer.  If the
-	     * channel is line-based, we will need to flush the output
-	     * buffer (after translating the staging buffer).
-	     */
-	    
-	    *stage++ = '\n';
-	    stageLen--;
-	    sawLF++;
-	}
-	sawLF += TranslateOutputEOL(statePtr, stage, src, &stageLen, &toWrite);
+	if (translate) {
+	    if (savedLF) {
+		/*
+		 * A '\n' was left over from last call to TranslateOutputEOL()
+		 * and we need to store it in the staging buffer. If the channel
+		 * is line-based, we will need to flush the output buffer (after
+		 * translating the staging buffer).
+		 */
+
+		*stage++ = '\n';
+		stageLen--;
+		sawLF++;
+	    }
+	    if (TranslateOutputEOL(statePtr, stage, src, &stageLen, &toWrite)) {
+		sawLF++;
+	    }
 
-	stage -= savedLF;
-	stageLen += savedLF;
-	savedLF = 0;
+	    stage -= savedLF;
+	    stageLen += savedLF;
+	    savedLF = 0;
 
-	if (stageLen > stageMax) {
-	    savedLF = 1;
-	    stageLen = stageMax;
+	    if (stageLen > stageMax) {
+		savedLF = 1;
+		stageLen = stageMax;
+	    }
+	} else {
+	    memcpy(stage, src, toWrite);
+	    stageLen = toWrite;
 	}
 	src += toWrite;
 	srcLen -= toWrite;
@@ -3351,17 +3757,16 @@ WriteChars(chanPtr, src, srcLen)
 		bufPtr = AllocChannelBuffer(statePtr->bufSize);
 		statePtr->curOutPtr = bufPtr;
 	    }
-	    dst = bufPtr->buf + bufPtr->nextAdded;
-	    dstLen = bufPtr->bufLength - bufPtr->nextAdded;
+	    dst = InsertPoint(bufPtr);
+	    dstLen = SpaceLeft(bufPtr);
 
 	    if (saved != 0) {
 		/*
-		 * Here's some translated bytes left over from the last
-		 * buffer that we need to stick at the beginning of this
-		 * buffer.
+		 * Here's some translated bytes left over from the last buffer
+		 * that we need to stick at the beginning of this buffer.
 		 */
-		 
-		memcpy((VOID *) dst, (VOID *) safe, (size_t) saved);
+
+		memcpy(dst, safe, (size_t) saved);
 		bufPtr->nextAdded += saved;
 		dst += saved;
 		dstLen -= saved;
@@ -3373,7 +3778,8 @@ WriteChars(chanPtr, src, srcLen)
 		    &statePtr->outputEncodingState, dst,
 		    dstLen + BUFFER_PADDING, &stageRead, &dstWrote, NULL);
 
-	    /* Fix for SF #506297, reported by Martin Forssen
+	    /*
+	     * Fix for SF #506297, reported by Martin Forssen
 	     * <ruric@users.sourceforge.net>.
 	     *
 	     * The encoding chosen in the script exposing the bug writes out
@@ -3389,13 +3795,15 @@ WriteChars(chanPtr, src, srcLen)
 	     */
 
 	    statePtr->outputEncodingFlags &= ~TCL_ENCODING_START;
+
 	    /*
 	     * The following code must be executed only when result is not 0.
 	     */
-	    if (result && ((stageRead + dstWrote) == 0)) {
+
+	    if ((result != 0) && (stageRead + dstWrote == 0)) {
 		/*
 		 * We have an incomplete UTF-8 character at the end of the
-		 * staging buffer.  It will get moved to the beginning of the
+		 * staging buffer. It will get moved to the beginning of the
 		 * staging buffer followed by more bytes from src.
 		 */
 
@@ -3406,18 +3814,17 @@ WriteChars(chanPtr, src, srcLen)
 		break;
 	    }
 	    bufPtr->nextAdded += dstWrote;
-	    if (bufPtr->nextAdded > bufPtr->bufLength) {
+	    if (IsBufferOverflowing(bufPtr)) {
 		/*
 		 * When translating from UTF-8 to external encoding, we
-		 * allowed the translation to produce a character that
-		 * crossed the end of the output buffer, so that we would
-		 * get a completely full buffer before flushing it.  The
-		 * extra bytes will be moved to the beginning of the next
-		 * buffer.
+		 * allowed the translation to produce a character that crossed
+		 * the end of the output buffer, so that we would get a
+		 * completely full buffer before flushing it. The extra bytes
+		 * will be moved to the beginning of the next buffer.
 		 */
 
-		saved = bufPtr->nextAdded - bufPtr->bufLength;
-		memcpy((VOID *) safe, (VOID *) (dst + dstLen), (size_t) saved);
+		saved = -SpaceLeft(bufPtr);
+		memcpy(safe, dst + dstLen, (size_t) saved);
 		bufPtr->nextAdded = bufPtr->bufLength;
 	    }
 	    if (CheckFlush(chanPtr, bufPtr, sawLF) != 0) {
@@ -3443,13 +3850,14 @@ WriteChars(chanPtr, src, srcLen)
 	}
     }
 
-    /* If nothing was written and it happened because there was no progress
-     * in the UTF conversion, we throw an error.
+    /*
+     * If nothing was written and it happened because there was no progress in
+     * the UTF conversion, we throw an error.
      */
 
     if (!consumedSomething && (total == 0)) {
-        Tcl_SetErrno (EINVAL);
-        return -1;
+	Tcl_SetErrno(EINVAL);
+	return -1;
     }
     return total;
 }
@@ -3459,125 +3867,120 @@ WriteChars(chanPtr, src, srcLen)
  *
  * TranslateOutputEOL --
  *
- *	Helper function for WriteBytes() and WriteChars().  Converts the
- *	'\n' characters in the source buffer into the appropriate EOL
- *	form specified by the output translation mode.
+ *	Helper function for WriteBytes() and WriteChars(). Converts the '\n'
+ *	characters in the source buffer into the appropriate EOL form
+ *	specified by the output translation mode.
  *
- *	EOL translation stops either when the source buffer is empty
- *	or the output buffer is full.
+ *	EOL translation stops either when the source buffer is empty or the
+ *	output buffer is full.
  *
- *	When converting to CRLF mode and there is only 1 byte left in
- *	the output buffer, this routine stores the '\r' in the last
- *	byte and then stores the '\n' in the byte just past the end of the 
- *	buffer.  The caller is responsible for passing in a buffer that
- *	is large enough to hold the extra byte.
+ *	When converting to CRLF mode and there is only 1 byte left in the
+ *	output buffer, this routine stores the '\r' in the last byte and then
+ *	stores the '\n' in the byte just past the end of the buffer. The
+ *	caller is responsible for passing in a buffer that is large enough to
+ *	hold the extra byte.
  *
  * Results:
- *	The return value is 1 if a '\n' was translated from the source
- *	buffer, or 0 otherwise -- this can be used by the caller to
- *	decide to flush a line-based channel even though the channel
- *	buffer is not full.
+ *	The return value is 1 if a '\n' was translated from the source buffer,
+ *	or 0 otherwise -- this can be used by the caller to decide to flush a
+ *	line-based channel even though the channel buffer is not full.
  *
- *	*dstLenPtr is filled with how many bytes of the output buffer
- *	were used.  As mentioned above, this can be one more that
- *	the output buffer's specified length if a CRLF was stored.
+ *	*dstLenPtr is filled with how many bytes of the output buffer were
+ *	used. As mentioned above, this can be one more that the output
+ *	buffer's specified length if a CRLF was stored.
  *
- *	*srcLenPtr is filled with how many bytes of the source buffer
- *	were consumed.  
+ *	*srcLenPtr is filled with how many bytes of the source buffer were
+ *	consumed.
  *
  * Side effects:
- *	It may be obvious, but bears mentioning that when converting
- *	in CRLF mode (which requires two bytes of storage in the output
- *	buffer), the number of bytes consumed from the source buffer
- *	will be less than the number of bytes stored in the output buffer.
+ *	It may be obvious, but bears mentioning that when converting in CRLF
+ *	mode (which requires two bytes of storage in the output buffer), the
+ *	number of bytes consumed from the source buffer will be less than the
+ *	number of bytes stored in the output buffer.
  *
  *---------------------------------------------------------------------------
  */
 
 static int
-TranslateOutputEOL(statePtr, dst, src, dstLenPtr, srcLenPtr)
-    ChannelState *statePtr;	/* Channel being read, for translation and
+TranslateOutputEOL(
+    ChannelState *statePtr,	/* Channel being read, for translation and
 				 * buffering modes. */
-    char *dst;			/* Output buffer filled with UTF-8 chars by
+    char *dst,			/* Output buffer filled with UTF-8 chars by
 				 * applying appropriate EOL translation to
 				 * source characters. */
-    CONST char *src;		/* Source UTF-8 characters. */
-    int *dstLenPtr;		/* On entry, the maximum length of output
-				 * buffer in bytes.  On exit, the number of
+    const char *src,		/* Source UTF-8 characters. */
+    int *dstLenPtr,		/* On entry, the maximum length of output
+				 * buffer in bytes. On exit, the number of
 				 * bytes actually used in output buffer. */
-    int *srcLenPtr;		/* On entry, the length of source buffer.
-				 * On exit, the number of bytes read from
-				 * the source buffer. */
+    int *srcLenPtr)		/* On entry, the length of source buffer. On
+				 * exit, the number of bytes read from the
+				 * source buffer. */
 {
     char *dstEnd;
     int srcLen, newlineFound;
-    
+
     newlineFound = 0;
     srcLen = *srcLenPtr;
 
     switch (statePtr->outputTranslation) {
-	case TCL_TRANSLATE_LF: {
-	    for (dstEnd = dst + srcLen; dst < dstEnd; ) {
-		if (*src == '\n') {
-		    newlineFound = 1;
-		}
-		*dst++ = *src++;
+    case TCL_TRANSLATE_LF:
+	for (dstEnd = dst + srcLen; dst < dstEnd; ) {
+	    if (*src == '\n') {
+		newlineFound = 1;
 	    }
-	    *dstLenPtr = srcLen;
-	    break;
-	}
-	case TCL_TRANSLATE_CR: {
-	    for (dstEnd = dst + srcLen; dst < dstEnd;) {
-		if (*src == '\n') {
-		    *dst++ = '\r';
-		    newlineFound = 1;
-		    src++;
-		} else {
-		    *dst++ = *src++;
-		}
+	    *dst++ = *src++;
+	}
+	*dstLenPtr = srcLen;
+	break;
+    case TCL_TRANSLATE_CR:
+	for (dstEnd = dst + srcLen; dst < dstEnd;) {
+	    if (*src == '\n') {
+		*dst++ = '\r';
+		newlineFound = 1;
+		src++;
+	    } else {
+		*dst++ = *src++;
 	    }
-	    *dstLenPtr = srcLen;
-	    break;
 	}
-	case TCL_TRANSLATE_CRLF: {
-	    /*
-	     * Since this causes the number of bytes to grow, we
-	     * start off trying to put 'srcLen' bytes into the
-	     * output buffer, but allow it to store more bytes, as
-	     * long as there's still source bytes and room in the
-	     * output buffer.
-	     */
+	*dstLenPtr = srcLen;
+	break;
+    case TCL_TRANSLATE_CRLF: {
+	/*
+	 * Since this causes the number of bytes to grow, we start off trying
+	 * to put 'srcLen' bytes into the output buffer, but allow it to store
+	 * more bytes, as long as there's still source bytes and room in the
+	 * output buffer.
+	 */
 
-	    char *dstStart, *dstMax;
-	    CONST char *srcStart;
-	    
-	    dstStart = dst;
-	    dstMax = dst + *dstLenPtr;
+	char *dstStart, *dstMax;
+	const char *srcStart;
 
-	    srcStart = src;
-	    
-	    if (srcLen < *dstLenPtr) {
-		dstEnd = dst + srcLen;
-	    } else {
-		dstEnd = dst + *dstLenPtr;
-	    }
-	    while (dst < dstEnd) {
-		if (*src == '\n') {
-		    if (dstEnd < dstMax) {
-			dstEnd++;
-		    }
-		    *dst++ = '\r';
-		    newlineFound = 1;
+	dstStart = dst;
+	dstMax = dst + *dstLenPtr;
+
+	srcStart = src;
+
+	if (srcLen < *dstLenPtr) {
+	    dstEnd = dst + srcLen;
+	} else {
+	    dstEnd = dst + *dstLenPtr;
+	}
+	while (dst < dstEnd) {
+	    if (*src == '\n') {
+		if (dstEnd < dstMax) {
+		    dstEnd++;
 		}
-		*dst++ = *src++;
+		*dst++ = '\r';
+		newlineFound = 1;
 	    }
-	    *srcLenPtr = src - srcStart;
-	    *dstLenPtr = dst - dstStart;
-	    break;
-	}
-	default: {
-	    break;
+	    *dst++ = *src++;
 	}
+	*srcLenPtr = src - srcStart;
+	*dstLenPtr = dst - dstStart;
+	break;
+    }
+    default:
+	break;
     }
     return newlineFound;
 }
@@ -3587,12 +3990,12 @@ TranslateOutputEOL(statePtr, dst, src, dstLenPtr, srcLenPtr)
  *
  * CheckFlush --
  *
- *	Helper function for WriteBytes() and WriteChars().  If the
- *	channel buffer is ready to be flushed, flush it.
+ *	Helper function for WriteBytes() and WriteChars(). If the channel
+ *	buffer is ready to be flushed, flush it.
  *
  * Results:
- *	The return value is -1 if there was a problem flushing the
- *	channel buffer, or 0 otherwise.
+ *	The return value is -1 if there was a problem flushing the channel
+ *	buffer, or 0 otherwise.
  *
  * Side effects:
  *	The buffer will be recycled if it is flushed.
@@ -3601,13 +4004,15 @@ TranslateOutputEOL(statePtr, dst, src, dstLenPtr, srcLenPtr)
  */
 
 static int
-CheckFlush(chanPtr, bufPtr, newlineFlag)
-    Channel *chanPtr;		/* Channel being read, for buffering mode. */
-    ChannelBuffer *bufPtr;	/* Channel buffer to possibly flush. */
-    int newlineFlag;		/* Non-zero if a the channel buffer
-				 * contains a newline. */
+CheckFlush(
+    Channel *chanPtr,		/* Channel being read, for buffering mode. */
+    ChannelBuffer *bufPtr,	/* Channel buffer to possibly flush. */
+    int newlineFlag)		/* Non-zero if a the channel buffer contains a
+				 * newline. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+
     /*
      * The current buffer is ready for output:
      * 1. if it is full.
@@ -3616,14 +4021,14 @@ CheckFlush(chanPtr, bufPtr, newlineFlag)
      */
 
     if ((statePtr->flags & BUFFER_READY) == 0) {
-	if (bufPtr->nextAdded == bufPtr->bufLength) {
-	    statePtr->flags |= BUFFER_READY;
+	if (IsBufferFull(bufPtr)) {
+	    SetFlag(statePtr, BUFFER_READY);
 	} else if (statePtr->flags & CHANNEL_LINEBUFFERED) {
 	    if (newlineFlag != 0) {
-		statePtr->flags |= BUFFER_READY;
+		SetFlag(statePtr, BUFFER_READY);
 	    }
 	} else if (statePtr->flags & CHANNEL_UNBUFFERED) {
-	    statePtr->flags |= BUFFER_READY;
+	    SetFlag(statePtr, BUFFER_READY);
 	}
     }
     if (statePtr->flags & BUFFER_READY) {
@@ -3647,17 +4052,17 @@ CheckFlush(chanPtr, bufPtr, newlineFlag)
  *	error or condition that occurred.
  *
  * Side effects:
- *	May flush output on the channel.  May cause input to be consumed
- *	from the channel.
+ *	May flush output on the channel. May cause input to be consumed from
+ *	the channel.
  *
  *---------------------------------------------------------------------------
  */
 
 int
-Tcl_Gets(chan, lineRead)
-    Tcl_Channel chan;		/* Channel from which to read. */
-    Tcl_DString *lineRead;	/* The line read will be appended to this
-				 * DString as UTF-8 characters.  The caller
+Tcl_Gets(
+    Tcl_Channel chan,		/* Channel from which to read. */
+    Tcl_DString *lineRead)	/* The line read will be appended to this
+				 * DString as UTF-8 characters. The caller
 				 * must have initialized it and is responsible
 				 * for managing the storage. */
 {
@@ -3665,13 +4070,13 @@ Tcl_Gets(chan, lineRead)
     int charsStored, length;
     char *string;
 
-    objPtr = Tcl_NewObj();
+    TclNewObj(objPtr);
     charsStored = Tcl_GetsObj(chan, objPtr);
     if (charsStored > 0) {
-	string = Tcl_GetStringFromObj(objPtr, &length);
+	string = TclGetStringFromObj(objPtr, &length);
 	Tcl_DStringAppend(lineRead, string, length);
     }
-    Tcl_DecrRefCount(objPtr);
+    TclDecrRefCount(objPtr);
     return charsStored;
 }
 
@@ -3681,60 +4086,71 @@ Tcl_Gets(chan, lineRead)
  * Tcl_GetsObj --
  *
  *	Accumulate input from the input channel until end-of-line or
- *	end-of-file has been seen.  Bytes read from the input channel
- *	are converted to UTF-8 using the encoding specified by the
- *	channel.
+ *	end-of-file has been seen. Bytes read from the input channel are
+ *	converted to UTF-8 using the encoding specified by the channel.
  *
  * Results:
  *	Number of characters accumulated in the object or -1 if error,
- *	blocked, or EOF.  If -1, use Tcl_GetErrno() to retrieve the
- *	POSIX error code for the error or condition that occurred.
+ *	blocked, or EOF. If -1, use Tcl_GetErrno() to retrieve the POSIX error
+ *	code for the error or condition that occurred.
  *
  * Side effects:
  *	Consumes input from the channel.
  *
- *	On reading EOF, leave channel pointing at EOF char.
- *	On reading EOL, leave channel pointing after EOL, but don't
- *	return EOL in dst buffer.
+ *	On reading EOF, leave channel pointing at EOF char. On reading EOL,
+ *	leave channel pointing after EOL, but don't return EOL in dst buffer.
  *
  *---------------------------------------------------------------------------
  */
 
 int
-Tcl_GetsObj(chan, objPtr)
-    Tcl_Channel chan;		/* Channel from which to read. */
-    Tcl_Obj *objPtr;		/* The line read will be appended to this
+Tcl_GetsObj(
+    Tcl_Channel chan,		/* Channel from which to read. */
+    Tcl_Obj *objPtr)		/* The line read will be appended to this
 				 * object as UTF-8 characters. */
 {
     GetsState gs;
     Channel *chanPtr = (Channel *) chan;
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr;
     int inEofChar, skip, copiedTotal, oldLength, oldFlags, oldRemoved;
     Tcl_Encoding encoding;
     char *dst, *dstEnd, *eol, *eof;
     Tcl_EncodingState oldState;
 
+    if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
+	copiedTotal = -1;
+	goto done;
+    }
+
+    /*
+     * A binary version of Tcl_GetsObj. This could also handle encodings that
+     * are ascii-7 pure (iso8859, utf-8, ...) with a final encoding conversion
+     * done on objPtr.
+     */
+
+    if ((statePtr->encoding == NULL)
+	    && ((statePtr->inputTranslation == TCL_TRANSLATE_LF)
+		    || (statePtr->inputTranslation == TCL_TRANSLATE_CR))) {
+	return TclGetsObjBinary(chan, objPtr);
+    }
+
     /*
      * This operation should occur at the top of a channel stack.
      */
 
     chanPtr = statePtr->topChanPtr;
 
-    if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
-	copiedTotal = -1;
-	goto done;
-    }
-
     bufPtr = statePtr->inQueueHead;
     encoding = statePtr->encoding;
 
     /*
-     * Preserved so we can restore the channel's state in case we don't
-     * find a newline in the available input.
+     * Preserved so we can restore the channel's state in case we don't find a
+     * newline in the available input.
      */
 
-    Tcl_GetStringFromObj(objPtr, &oldLength);
+    TclGetStringFromObj(objPtr, &oldLength);
     oldFlags = statePtr->inputEncodingFlags;
     oldState = statePtr->inputEncodingState;
     oldRemoved = BUFFER_PADDING;
@@ -3744,17 +4160,25 @@ Tcl_GetsObj(chan, objPtr)
 
     /*
      * If there is no encoding, use "iso8859-1" -- Tcl_GetsObj() doesn't
-     * produce ByteArray objects.  To avoid circularity problems,
-     * "iso8859-1" is builtin to Tcl.
+     * produce ByteArray objects.
      */
 
     if (encoding == NULL) {
-	encoding = Tcl_GetEncoding(NULL, "iso8859-1");
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	if (tsdPtr->binaryEncoding == NULL) {
+	    tsdPtr->binaryEncoding = Tcl_GetEncoding(NULL, "iso8859-1");
+	    Tcl_CreateThreadExitHandler(FreeBinaryEncoding, NULL);
+	}
+	encoding = tsdPtr->binaryEncoding;
+	if (encoding == NULL) {
+	    Tcl_Panic("attempted gets on binary channel where no iso8859-1 encoding available");
+	}
     }
 
     /*
-     * Object used by FilterInputBytes to keep track of how much data has
-     * been consumed from the channel buffers.
+     * Object used by FilterInputBytes to keep track of how much data has been
+     * consumed from the channel buffers.
      */
 
     gs.objPtr		= objPtr;
@@ -3781,10 +4205,10 @@ Tcl_GetsObj(chan, objPtr)
 	    }
 	    dstEnd = dst + gs.bytesWrote;
 	}
-	
+
 	/*
-	 * Remember if EOF char is seen, then look for EOL anyhow, because
-	 * the EOL might be before the EOF char.
+	 * Remember if EOF char is seen, then look for EOL anyhow, because the
+	 * EOL might be before the EOF char.
 	 */
 
 	if (inEofChar != '\0') {
@@ -3803,31 +4227,37 @@ Tcl_GetsObj(chan, objPtr)
 	 */
 
 	switch (statePtr->inputTranslation) {
-	    case TCL_TRANSLATE_LF: {
-		for (eol = dst; eol < dstEnd; eol++) {
-		    if (*eol == '\n') {
-			skip = 1;
-			goto goteol;
-		    }
+	case TCL_TRANSLATE_LF:
+	    for (eol = dst; eol < dstEnd; eol++) {
+		if (*eol == '\n') {
+		    skip = 1;
+		    goto gotEOL;
 		}
-		break;
 	    }
-	    case TCL_TRANSLATE_CR: {
-		for (eol = dst; eol < dstEnd; eol++) {
-		    if (*eol == '\r') {
-			skip = 1;
-			goto goteol;
-		    }
+	    break;
+	case TCL_TRANSLATE_CR:
+	    for (eol = dst; eol < dstEnd; eol++) {
+		if (*eol == '\r') {
+		    skip = 1;
+		    goto gotEOL;
 		}
-		break;
 	    }
-	    case TCL_TRANSLATE_CRLF: {
-		for (eol = dst; eol < dstEnd; eol++) {
-		    if (*eol == '\r') {
-			eol++;
-			if (eol >= dstEnd) {
-			    int offset;
-			    
+	    break;
+	case TCL_TRANSLATE_CRLF:
+	    for (eol = dst; eol < dstEnd; eol++) {
+		if (*eol == '\r') {
+		    eol++;
+
+		    /*
+		     * If a CR is at the end of the buffer, then check for a
+		     * LF at the begining of the next buffer, unless EOF char
+		     * was found already.
+		     */
+
+		    if (eol >= dstEnd) {
+			int offset;
+
+			if (eol != eof) {
 			    offset = eol - objPtr->bytes;
 			    dst = dstEnd;
 			    if (FilterInputBytes(chanPtr, &gs) != 0) {
@@ -3835,88 +4265,89 @@ Tcl_GetsObj(chan, objPtr)
 			    }
 			    dstEnd = dst + gs.bytesWrote;
 			    eol = objPtr->bytes + offset;
-			    if (eol >= dstEnd) {
-				skip = 0;
-				goto goteol;
-			    }
 			}
-			if (*eol == '\n') {
-			    eol--;
-			    skip = 2;
-			    goto goteol;
+			if (eol >= dstEnd) {
+			    skip = 0;
+			    goto gotEOL;
 			}
 		    }
+		    if (*eol == '\n') {
+			eol--;
+			skip = 2;
+			goto gotEOL;
+		    }
 		}
-		break;
 	    }
-	    case TCL_TRANSLATE_AUTO: {
-		eol = dst;
-		skip = 1;
-		if (statePtr->flags & INPUT_SAW_CR) {
-		    statePtr->flags &= ~INPUT_SAW_CR;
-		    if (*eol == '\n') {
-			/*
-			 * Skip the raw bytes that make up the '\n'.
-			 */
+	    break;
+	case TCL_TRANSLATE_AUTO:
+	    eol = dst;
+	    skip = 1;
+	    if (statePtr->flags & INPUT_SAW_CR) {
+		ResetFlag(statePtr, INPUT_SAW_CR);
+		if ((eol < dstEnd) && (*eol == '\n')) {
+		    /*
+		     * Skip the raw bytes that make up the '\n'.
+		     */
 
-			char tmp[1 + TCL_UTF_MAX];
-			int rawRead;
-
-			bufPtr = gs.bufPtr;
-			Tcl_ExternalToUtf(NULL, gs.encoding,
-				bufPtr->buf + bufPtr->nextRemoved,
-				gs.rawRead, statePtr->inputEncodingFlags,
-				&gs.state, tmp, 1 + TCL_UTF_MAX, &rawRead,
-				NULL, NULL);
-			bufPtr->nextRemoved += rawRead;
-			gs.rawRead -= rawRead;
-			gs.bytesWrote--;
-			gs.charsWrote--;
-			memmove(dst, dst + 1, (size_t) (dstEnd - dst));
-			dstEnd--;
-		    }
+		    char tmp[1 + TCL_UTF_MAX];
+		    int rawRead;
+
+		    bufPtr = gs.bufPtr;
+		    Tcl_ExternalToUtf(NULL, gs.encoding, RemovePoint(bufPtr),
+			    gs.rawRead, statePtr->inputEncodingFlags,
+			    &gs.state, tmp, 1 + TCL_UTF_MAX, &rawRead, NULL,
+			    NULL);
+		    bufPtr->nextRemoved += rawRead;
+		    gs.rawRead -= rawRead;
+		    gs.bytesWrote--;
+		    gs.charsWrote--;
+		    memmove(dst, dst + 1, (size_t) (dstEnd - dst));
+		    dstEnd--;
 		}
-		for (eol = dst; eol < dstEnd; eol++) {
-		    if (*eol == '\r') {
-			eol++;
-			if (eol == dstEnd) {
-			    /*
-			     * If buffer ended on \r, peek ahead to see if a
-			     * \n is available.
-			     */
+	    }
+	    for (eol = dst; eol < dstEnd; eol++) {
+		if (*eol == '\r') {
+		    eol++;
+		    if (eol == dstEnd) {
+			/*
+			 * If buffer ended on \r, peek ahead to see if a \n is
+			 * available, unless EOF char was found already.
+			 */
 
+			if (eol != eof) {
 			    int offset;
-			    
+
 			    offset = eol - objPtr->bytes;
 			    dst = dstEnd;
 			    PeekAhead(chanPtr, &dstEnd, &gs);
 			    eol = objPtr->bytes + offset;
-			    if (eol >= dstEnd) {
-				eol--;
-				statePtr->flags |= INPUT_SAW_CR;
-				goto goteol;
-			    }
 			}
-			if (*eol == '\n') {
-			    skip++;
+
+			if (eol >= dstEnd) {
+			    eol--;
+			    SetFlag(statePtr, INPUT_SAW_CR);
+			    goto gotEOL;
 			}
-			eol--;
-			goto goteol;
-		    } else if (*eol == '\n') {
-			goto goteol;
 		    }
+		    if (*eol == '\n') {
+			skip++;
+		    }
+		    eol--;
+		    goto gotEOL;
+		} else if (*eol == '\n') {
+		    goto gotEOL;
 		}
 	    }
 	}
 	if (eof != NULL) {
 	    /*
-	     * EOF character was seen.  On EOF, leave current file position
+	     * EOF character was seen. On EOF, leave current file position
 	     * pointing at the EOF character, but don't store the EOF
 	     * character in the output string.
 	     */
 
 	    dstEnd = eof;
-	    statePtr->flags |= (CHANNEL_EOF | CHANNEL_STICKY_EOF);
+	    SetFlag(statePtr, CHANNEL_EOF | CHANNEL_STICKY_EOF);
 	    statePtr->inputEncodingFlags |= TCL_ENCODING_END;
 	}
 	if (statePtr->flags & CHANNEL_EOF) {
@@ -3929,29 +4360,31 @@ Tcl_GetsObj(chan, objPtr)
 		 */
 
 		Tcl_SetObjLength(objPtr, oldLength);
-		CommonGetsCleanup(chanPtr, encoding);
+		CommonGetsCleanup(chanPtr);
 		copiedTotal = -1;
 		goto done;
 	    }
-	    goto goteol;
+	    goto gotEOL;
 	}
 	dst = dstEnd;
     }
 
     /*
-     * Found EOL or EOF, but the output buffer may now contain too many
-     * UTF-8 characters.  We need to know how many raw bytes correspond to
-     * the number of UTF-8 characters we want, plus how many raw bytes
-     * correspond to the character(s) making up EOL (if any), so we can
-     * remove the correct number of bytes from the channel buffer.
+     * Found EOL or EOF, but the output buffer may now contain too many UTF-8
+     * characters. We need to know how many raw bytes correspond to the number
+     * of UTF-8 characters we want, plus how many raw bytes correspond to the
+     * character(s) making up EOL (if any), so we can remove the correct
+     * number of bytes from the channel buffer.
      */
-     
-    goteol:
+
+  gotEOL:
     bufPtr = gs.bufPtr;
+    if (bufPtr == NULL) {
+	Tcl_Panic("Tcl_GetsObj: gotEOL reached with bufPtr==NULL");
+    }
     statePtr->inputEncodingState = gs.state;
-    Tcl_ExternalToUtf(NULL, gs.encoding, bufPtr->buf + bufPtr->nextRemoved,
-	    gs.rawRead, statePtr->inputEncodingFlags,
-	    &statePtr->inputEncodingState, dst,
+    Tcl_ExternalToUtf(NULL, gs.encoding, RemovePoint(bufPtr), gs.rawRead,
+	    statePtr->inputEncodingFlags, &statePtr->inputEncodingState, dst,
 	    eol - dst + skip + TCL_UTF_MAX, &gs.rawRead, NULL,
 	    &gs.charsWrote);
     bufPtr->nextRemoved += gs.rawRead;
@@ -3961,25 +4394,28 @@ Tcl_GetsObj(chan, objPtr)
      */
 
     Tcl_SetObjLength(objPtr, eol - objPtr->bytes);
-    CommonGetsCleanup(chanPtr, encoding);
-    statePtr->flags &= ~CHANNEL_BLOCKED;
+    CommonGetsCleanup(chanPtr);
+    ResetFlag(statePtr, CHANNEL_BLOCKED);
     copiedTotal = gs.totalChars + gs.charsWrote - skip;
     goto done;
 
     /*
-     * Couldn't get a complete line.  This only happens if we get a error
-     * reading from the channel or we are non-blocking and there wasn't
-     * an EOL or EOF in the data available.
+     * Couldn't get a complete line. This only happens if we get a error
+     * reading from the channel or we are non-blocking and there wasn't an EOL
+     * or EOF in the data available.
      */
 
-    restore:
+  restore:
     bufPtr = statePtr->inQueueHead;
+    if (bufPtr == NULL) {
+	Tcl_Panic("Tcl_GetsObj: restore reached with bufPtr==NULL");
+    }
     bufPtr->nextRemoved = oldRemoved;
 
     for (bufPtr = bufPtr->nextPtr; bufPtr != NULL; bufPtr = bufPtr->nextPtr) {
 	bufPtr->nextRemoved = BUFFER_PADDING;
     }
-    CommonGetsCleanup(chanPtr, encoding);
+    CommonGetsCleanup(chanPtr);
 
     statePtr->inputEncodingState = oldState;
     statePtr->inputEncodingFlags = oldFlags;
@@ -3987,66 +4423,336 @@ Tcl_GetsObj(chan, objPtr)
 
     /*
      * We didn't get a complete line so we need to indicate to UpdateInterest
-     * that the gets blocked.  It will wait for more data instead of firing
-     * a timer, avoiding a busy wait.  This is where we are assuming that the
-     * next operation is a gets.  No more file events will be delivered on 
-     * this channel until new data arrives or some operation is performed
-     * on the channel (e.g. gets, read, fconfigure) that changes the blocking
-     * state.  Note that this means a file event will not be delivered even
-     * though a read would be able to consume the buffered data.
+     * that the gets blocked. It will wait for more data instead of firing a
+     * timer, avoiding a busy wait. This is where we are assuming that the
+     * next operation is a gets. No more file events will be delivered on this
+     * channel until new data arrives or some operation is performed on the
+     * channel (e.g. gets, read, fconfigure) that changes the blocking state.
+     * Note that this means a file event will not be delivered even though a
+     * read would be able to consume the buffered data.
+     */
+
+    SetFlag(statePtr, CHANNEL_NEED_MORE_DATA);
+    copiedTotal = -1;
+
+    /*
+     * Update the notifier state so we don't block while there is still data
+     * in the buffers.
+     */
+
+  done:
+    UpdateInterest(chanPtr);
+    return copiedTotal;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclGetsObjBinary --
+ *
+ *	A variation of Tcl_GetsObj that works directly on the buffers until
+ *	end-of-line or end-of-file has been seen. Bytes read from the input
+ *	channel return as a ByteArray obj.
+ *
+ * Results:
+ *	Number of characters accumulated in the object or -1 if error,
+ *	blocked, or EOF. If -1, use Tcl_GetErrno() to retrieve the POSIX error
+ *	code for the error or condition that occurred.
+ *
+ * Side effects:
+ *	Consumes input from the channel.
+ *
+ *	On reading EOF, leave channel pointing at EOF char. On reading EOL,
+ *	leave channel pointing after EOL, but don't return EOL in dst buffer.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+TclGetsObjBinary(
+    Tcl_Channel chan,		/* Channel from which to read. */
+    Tcl_Obj *objPtr)		/* The line read will be appended to this
+				 * object as UTF-8 characters. */
+{
+    Channel *chanPtr = (Channel *) chan;
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+    ChannelBuffer *bufPtr;
+    int inEofChar, skip, copiedTotal, oldLength, oldFlags, oldRemoved;
+    int rawLen, byteLen, eolChar;
+    unsigned char *dst, *dstEnd, *eol, *eof, *byteArray;
+
+    /*
+     * This operation should occur at the top of a channel stack.
+     */
+
+    chanPtr = statePtr->topChanPtr;
+
+    bufPtr = statePtr->inQueueHead;
+
+    /*
+     * Preserved so we can restore the channel's state in case we don't find a
+     * newline in the available input.
+     */
+
+    byteArray = Tcl_GetByteArrayFromObj(objPtr, &byteLen);
+    oldFlags = statePtr->inputEncodingFlags;
+    oldRemoved = BUFFER_PADDING;
+    oldLength = byteLen;
+    if (bufPtr != NULL) {
+	oldRemoved = bufPtr->nextRemoved;
+    }
+
+    rawLen = 0;
+    skip = 0;
+    eof = NULL;
+    inEofChar = statePtr->inEofChar;
+    /* Only handle TCL_TRANSLATE_LF and TCL_TRANSLATE_CR */
+    eolChar = (statePtr->inputTranslation == TCL_TRANSLATE_LF) ? '\n' : '\r';
+
+    while (1) {
+	/*
+	 * Subtract the number of bytes that were removed from channel
+	 * buffer during last call.
+	 */
+
+	if (bufPtr != NULL) {
+	    bufPtr->nextRemoved += rawLen;
+	    if (!IsBufferReady(bufPtr)) {
+		bufPtr = bufPtr->nextPtr;
+	    }
+	}
+
+	if ((bufPtr == NULL) || (bufPtr->nextAdded == BUFFER_PADDING)) {
+	    /*
+	     * All channel buffers were exhausted and the caller still
+	     * hasn't seen EOL. Need to read more bytes from the channel
+	     * device. Side effect is to allocate another channel buffer.
+	     */
+
+	    if (statePtr->flags & CHANNEL_BLOCKED) {
+		if (statePtr->flags & CHANNEL_NONBLOCKING) {
+		    goto restore;
+		}
+		ResetFlag(statePtr, CHANNEL_BLOCKED);
+	    }
+	    if (GetInput(chanPtr) != 0) {
+		goto restore;
+	    }
+	    bufPtr = statePtr->inQueueTail;
+	}
+
+	dst = (unsigned char *) RemovePoint(bufPtr);
+	dstEnd = dst + BytesLeft(bufPtr);
+
+	/*
+	 * Remember if EOF char is seen, then look for EOL anyhow, because the
+	 * EOL might be before the EOF char.
+	 * XXX - in the binary case, consider coincident search for eol/eof.
+	 */
+
+	if (inEofChar != '\0') {
+	    for (eol = dst; eol < dstEnd; eol++) {
+		if (*eol == inEofChar) {
+		    dstEnd = eol;
+		    eof = eol;
+		    break;
+		}
+	    }
+	}
+
+	/*
+	 * On EOL, leave current file position pointing after the EOL, but
+	 * don't store the EOL in the output string.
+	 */
+
+	for (eol = dst; eol < dstEnd; eol++) {
+	    if (*eol == eolChar) {
+		skip = 1;
+		goto gotEOL;
+	    }
+	}
+	if (eof != NULL) {
+	    /*
+	     * EOF character was seen. On EOF, leave current file position
+	     * pointing at the EOF character, but don't store the EOF
+	     * character in the output string.
+	     */
+
+	    SetFlag(statePtr, CHANNEL_EOF | CHANNEL_STICKY_EOF);
+	    statePtr->inputEncodingFlags |= TCL_ENCODING_END;
+	}
+	if (statePtr->flags & CHANNEL_EOF) {
+	    skip = 0;
+	    eol = dstEnd;
+	    if ((dst == dstEnd) && (byteLen == oldLength)) {
+		/*
+		 * If we didn't append any bytes before encountering EOF,
+		 * caller needs to see -1.
+		 */
+
+		byteArray = Tcl_SetByteArrayLength(objPtr, oldLength);
+		CommonGetsCleanup(chanPtr);
+		copiedTotal = -1;
+		goto done;
+	    }
+	    goto gotEOL;
+	}
+
+	/*
+	 * Copy bytes from the channel buffer to the ByteArray.
+	 * This may realloc space, so keep track of result.
+	 */
+
+	rawLen = dstEnd - dst;
+	byteArray = Tcl_SetByteArrayLength(objPtr, byteLen + rawLen);
+	memcpy(byteArray + byteLen, dst, (size_t) rawLen);
+	byteLen += rawLen;
+    }
+
+    /*
+     * Found EOL or EOF, but the output buffer may now contain too many bytes.
+     * We need to know how many bytes correspond to the number we want, so we
+     * can remove the correct number of bytes from the channel buffer.
+     */
+
+  gotEOL:
+    if (bufPtr == NULL) {
+	Tcl_Panic("TclGetsObjBinary: gotEOL reached with bufPtr==NULL");
+    }
+
+    rawLen = eol - dst;
+    byteArray = Tcl_SetByteArrayLength(objPtr, byteLen + rawLen);
+    memcpy(byteArray + byteLen, dst, (size_t) rawLen);
+    byteLen += rawLen;
+    bufPtr->nextRemoved += rawLen + skip;
+
+    /*
+     * Convert the buffer if there was an encoding.
+     * XXX - unimplemented.
+     */
+
+    if (statePtr->encoding != NULL) {
+    }
+
+    /*
+     * Recycle all the emptied buffers.
+     */
+
+    CommonGetsCleanup(chanPtr);
+    ResetFlag(statePtr, CHANNEL_BLOCKED);
+    copiedTotal = byteLen;
+    goto done;
+
+    /*
+     * Couldn't get a complete line. This only happens if we get a error
+     * reading from the channel or we are non-blocking and there wasn't an EOL
+     * or EOF in the data available.
+     */
+
+  restore:
+    bufPtr = statePtr->inQueueHead;
+    if (bufPtr == NULL) {
+	Tcl_Panic("TclGetsObjBinary: restore reached with bufPtr==NULL");
+    }
+    bufPtr->nextRemoved = oldRemoved;
+
+    for (bufPtr = bufPtr->nextPtr; bufPtr != NULL; bufPtr = bufPtr->nextPtr) {
+	bufPtr->nextRemoved = BUFFER_PADDING;
+    }
+    CommonGetsCleanup(chanPtr);
+
+    statePtr->inputEncodingFlags = oldFlags;
+    byteArray = Tcl_SetByteArrayLength(objPtr, oldLength);
+
+    /*
+     * We didn't get a complete line so we need to indicate to UpdateInterest
+     * that the gets blocked. It will wait for more data instead of firing a
+     * timer, avoiding a busy wait. This is where we are assuming that the
+     * next operation is a gets. No more file events will be delivered on this
+     * channel until new data arrives or some operation is performed on the
+     * channel (e.g. gets, read, fconfigure) that changes the blocking state.
+     * Note that this means a file event will not be delivered even though a
+     * read would be able to consume the buffered data.
      */
 
-    statePtr->flags |= CHANNEL_NEED_MORE_DATA;
+    SetFlag(statePtr, CHANNEL_NEED_MORE_DATA);
     copiedTotal = -1;
 
-    done:
     /*
-     * Update the notifier state so we don't block while there is still
-     * data in the buffers.
+     * Update the notifier state so we don't block while there is still data
+     * in the buffers.
      */
 
+  done:
     UpdateInterest(chanPtr);
     return copiedTotal;
 }
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * FreeBinaryEncoding --
+ *
+ *	Frees any "iso8859-1" Tcl_Encoding created by [gets] on a binary
+ *	channel in a thread as part of that thread's finalization.
+ *
+ * Results:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
 
+static void
+FreeBinaryEncoding(
+    ClientData dummy)	/* Not used */
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    if (tsdPtr->binaryEncoding != NULL) {
+	Tcl_FreeEncoding(tsdPtr->binaryEncoding);
+	tsdPtr->binaryEncoding = NULL;
+    }
+}
+
 /*
  *---------------------------------------------------------------------------
  *
  * FilterInputBytes --
  *
- *	Helper function for Tcl_GetsObj.  Produces UTF-8 characters from
- *	raw bytes read from the channel.  
+ *	Helper function for Tcl_GetsObj. Produces UTF-8 characters from raw
+ *	bytes read from the channel.
  *
- *	Consumes available bytes from channel buffers.  When channel
- *	buffers are exhausted, reads more bytes from channel device into
- *	a new channel buffer.  It is the caller's responsibility to
- *	free the channel buffers that have been exhausted.
+ *	Consumes available bytes from channel buffers. When channel buffers
+ *	are exhausted, reads more bytes from channel device into a new channel
+ *	buffer. It is the caller's responsibility to free the channel buffers
+ *	that have been exhausted.
  *
  * Results:
- *	The return value is -1 if there was an error reading from the
- *	channel, 0 otherwise.
+ *	The return value is -1 if there was an error reading from the channel,
+ *	0 otherwise.
  *
  * Side effects:
- *	Status object keeps track of how much data from channel buffers
- *	has been consumed and where UTF-8 bytes should be stored.
+ *	Status object keeps track of how much data from channel buffers has
+ *	been consumed and where UTF-8 bytes should be stored.
  *
  *---------------------------------------------------------------------------
  */
- 
+
 static int
-FilterInputBytes(chanPtr, gsPtr)
-    Channel *chanPtr;		/* Channel to read. */
-    GetsState *gsPtr;		/* Current state of gets operation. */
+FilterInputBytes(
+    Channel *chanPtr,		/* Channel to read. */
+    GetsState *gsPtr)		/* Current state of gets operation. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr;
-    char *raw, *rawStart, *rawEnd;
-    char *dst;
-    int offset, toRead, dstNeeded, spaceLeft, result, rawLen, length;
+    char *raw, *rawStart, *dst;
+    int offset, toRead, dstNeeded, spaceLeft, result, rawLen;
     Tcl_Obj *objPtr;
-#define ENCODING_LINESIZE   20	/* Lower bound on how many bytes to convert
-				 * at a time.  Since we don't know a priori
-				 * how many bytes of storage this many source
+#define ENCODING_LINESIZE 20	/* Lower bound on how many bytes to convert at
+				 * a time. Since we don't know a priori how
+				 * many bytes of storage this many source
 				 * bytes will use, we actually need at least
 				 * ENCODING_LINESIZE * TCL_MAX_UTF bytes of
 				 * room. */
@@ -4061,7 +4767,7 @@ FilterInputBytes(chanPtr, gsPtr)
     bufPtr = gsPtr->bufPtr;
     if (bufPtr != NULL) {
 	bufPtr->nextRemoved += gsPtr->rawRead;
-	if (bufPtr->nextRemoved >= bufPtr->nextAdded) {
+	if (!IsBufferReady(bufPtr)) {
 	    bufPtr = bufPtr->nextPtr;
 	}
     }
@@ -4069,20 +4775,20 @@ FilterInputBytes(chanPtr, gsPtr)
 
     if ((bufPtr == NULL) || (bufPtr->nextAdded == BUFFER_PADDING)) {
 	/*
-	 * All channel buffers were exhausted and the caller still hasn't
-	 * seen EOL.  Need to read more bytes from the channel device.
-	 * Side effect is to allocate another channel buffer.
+	 * All channel buffers were exhausted and the caller still hasn't seen
+	 * EOL. Need to read more bytes from the channel device. Side effect
+	 * is to allocate another channel buffer.
 	 */
 
-	read:
-        if (statePtr->flags & CHANNEL_BLOCKED) {
-            if (statePtr->flags & CHANNEL_NONBLOCKING) {
+    read:
+	if (statePtr->flags & CHANNEL_BLOCKED) {
+	    if (statePtr->flags & CHANNEL_NONBLOCKING) {
 		gsPtr->charsWrote = 0;
 		gsPtr->rawRead = 0;
 		return -1;
 	    }
-            statePtr->flags &= ~CHANNEL_BLOCKED;
-        }
+	    ResetFlag(statePtr, CHANNEL_BLOCKED);
+	}
 	if (GetInput(chanPtr) != 0) {
 	    gsPtr->charsWrote = 0;
 	    gsPtr->rawRead = 0;
@@ -4093,15 +4799,14 @@ FilterInputBytes(chanPtr, gsPtr)
     }
 
     /*
-     * Convert some of the bytes from the channel buffer to UTF-8.  Space in
-     * objPtr's string rep is used to hold the UTF-8 characters.  Grow the
+     * Convert some of the bytes from the channel buffer to UTF-8. Space in
+     * objPtr's string rep is used to hold the UTF-8 characters. Grow the
      * string rep if we need more space.
      */
 
-    rawStart = bufPtr->buf + bufPtr->nextRemoved;
+    rawStart = RemovePoint(bufPtr);
     raw = rawStart;
-    rawEnd = bufPtr->buf + bufPtr->nextAdded;
-    rawLen = rawEnd - rawStart;
+    rawLen = BytesLeft(bufPtr);
 
     dst = *gsPtr->dstPtr;
     offset = dst - objPtr->bytes;
@@ -4109,15 +4814,19 @@ FilterInputBytes(chanPtr, gsPtr)
     if (toRead > rawLen) {
 	toRead = rawLen;
     }
-    dstNeeded = toRead * TCL_UTF_MAX + 1;
-    spaceLeft = objPtr->length - offset - TCL_UTF_MAX - 1;
+    dstNeeded = toRead * TCL_UTF_MAX;
+    spaceLeft = objPtr->length - offset;
     if (dstNeeded > spaceLeft) {
-	length = offset * 2;
-	if (offset < dstNeeded) {
+	int length = offset + ((offset < dstNeeded) ? dstNeeded : offset);
+
+	if (Tcl_AttemptSetObjLength(objPtr, length) == 0) {
 	    length = offset + dstNeeded;
+	    if (Tcl_AttemptSetObjLength(objPtr, length) == 0) {
+		dstNeeded = TCL_UTF_MAX - 1 + toRead;
+		length = offset + dstNeeded;
+		Tcl_SetObjLength(objPtr, length);
+	    }
 	}
-	length += TCL_UTF_MAX + 1;
-	Tcl_SetObjLength(objPtr, length);
 	spaceLeft = length - offset;
 	dst = objPtr->bytes + offset;
 	*gsPtr->dstPtr = dst;
@@ -4125,44 +4834,45 @@ FilterInputBytes(chanPtr, gsPtr)
     gsPtr->state = statePtr->inputEncodingState;
     result = Tcl_ExternalToUtf(NULL, gsPtr->encoding, raw, rawLen,
 	    statePtr->inputEncodingFlags, &statePtr->inputEncodingState,
-	    dst, spaceLeft, &gsPtr->rawRead, &gsPtr->bytesWrote,
+	    dst, spaceLeft+1, &gsPtr->rawRead, &gsPtr->bytesWrote,
 	    &gsPtr->charsWrote);
 
     /*
      * Make sure that if we go through 'gets', that we reset the
-     * TCL_ENCODING_START flag still.  [Bug #523988]
+     * TCL_ENCODING_START flag still. [Bug #523988]
      */
+
     statePtr->inputEncodingFlags &= ~TCL_ENCODING_START;
 
     if (result == TCL_CONVERT_MULTIBYTE) {
 	/*
 	 * The last few bytes in this channel buffer were the start of a
-	 * multibyte sequence.  If this buffer was full, then move them to
-	 * the next buffer so the bytes will be contiguous.  
+	 * multibyte sequence. If this buffer was full, then move them to the
+	 * next buffer so the bytes will be contiguous.
 	 */
 
 	ChannelBuffer *nextPtr;
 	int extra;
-	
+
 	nextPtr = bufPtr->nextPtr;
-	if (bufPtr->nextAdded < bufPtr->bufLength) {
+	if (!IsBufferFull(bufPtr)) {
 	    if (gsPtr->rawRead > 0) {
 		/*
-		 * Some raw bytes were converted to UTF-8.  Fall through,
+		 * Some raw bytes were converted to UTF-8. Fall through,
 		 * returning those UTF-8 characters because a EOL might be
 		 * present in them.
 		 */
 	    } else if (statePtr->flags & CHANNEL_EOF) {
 		/*
 		 * There was a partial character followed by EOF on the
-		 * device.  Fall through, returning that nothing was found.
+		 * device. Fall through, returning that nothing was found.
 		 */
 
 		bufPtr->nextRemoved = bufPtr->nextAdded;
 	    } else {
 		/*
-		 * There are no more cached raw bytes left.  See if we can
-		 * get some more.
+		 * There are no more cached raw bytes left. See if we can get
+		 * some more.
 		 */
 
 		goto read;
@@ -4174,8 +4884,8 @@ FilterInputBytes(chanPtr, gsPtr)
 		statePtr->inQueueTail = nextPtr;
 	    }
 	    extra = rawLen - gsPtr->rawRead;
-	    memcpy((VOID *) (nextPtr->buf + BUFFER_PADDING - extra),
-		    (VOID *) (raw + gsPtr->rawRead), (size_t) extra);
+	    memcpy(nextPtr->buf + BUFFER_PADDING - extra,
+		    raw + gsPtr->rawRead, (size_t) extra);
 	    nextPtr->nextRemoved -= extra;
 	    bufPtr->nextAdded -= extra;
 	}
@@ -4190,9 +4900,9 @@ FilterInputBytes(chanPtr, gsPtr)
  *
  * PeekAhead --
  *
- *	Helper function used by Tcl_GetsObj().  Called when we've seen a
- *	\r at the end of the UTF-8 string and want to look ahead one
- *	character to see if it is a \n.
+ *	Helper function used by Tcl_GetsObj(). Called when we've seen a \r at
+ *	the end of the UTF-8 string and want to look ahead one character to
+ *	see if it is a \n.
  *
  * Results:
  *	*gsPtr->dstPtr is filled with a pointer to the start of the range of
@@ -4208,13 +4918,14 @@ FilterInputBytes(chanPtr, gsPtr)
  */
 
 static void
-PeekAhead(chanPtr, dstEndPtr, gsPtr)
-    Channel *chanPtr;		/* The channel to read. */
-    char **dstEndPtr;		/* Filled with pointer to end of new range
-				 * of UTF-8 characters. */
-    GetsState *gsPtr;		/* Current state of gets operation. */
+PeekAhead(
+    Channel *chanPtr,		/* The channel to read. */
+    char **dstEndPtr,		/* Filled with pointer to end of new range of
+				 * UTF-8 characters. */
+    GetsState *gsPtr)		/* Current state of gets operation. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr;
     Tcl_DriverBlockModeProc *blockModeProc;
     int bytesLeft;
@@ -4223,21 +4934,21 @@ PeekAhead(chanPtr, dstEndPtr, gsPtr)
 
     /*
      * If there's any more raw input that's still buffered, we'll peek into
-     * that.  Otherwise, only get more data from the channel driver if it
-     * looks like there might actually be more data.  The assumption is that
-     * if the channel buffer is filled right up to the end, then there
-     * might be more data to read.
+     * that. Otherwise, only get more data from the channel driver if it looks
+     * like there might actually be more data. The assumption is that if the
+     * channel buffer is filled right up to the end, then there might be more
+     * data to read.
      */
 
     blockModeProc = NULL;
     if (bufPtr->nextPtr == NULL) {
-	bytesLeft = bufPtr->nextAdded - (bufPtr->nextRemoved + gsPtr->rawRead);
+	bytesLeft = BytesLeft(bufPtr) - gsPtr->rawRead;
 	if (bytesLeft == 0) {
-	    if (bufPtr->nextAdded < bufPtr->bufLength) {
+	    if (!IsBufferFull(bufPtr)) {
 		/*
 		 * Don't peek ahead if last read was short read.
 		 */
-		 
+
 		goto cleanup;
 	    }
 	    if ((statePtr->flags & CHANNEL_NONBLOCKING) == 0) {
@@ -4261,7 +4972,7 @@ PeekAhead(chanPtr, dstEndPtr, gsPtr)
     }
     return;
 
-    cleanup:
+  cleanup:
     bufPtr->nextRemoved += gsPtr->rawRead;
     gsPtr->rawRead = 0;
     gsPtr->totalChars += gsPtr->charsWrote;
@@ -4274,8 +4985,8 @@ PeekAhead(chanPtr, dstEndPtr, gsPtr)
  *
  * CommonGetsCleanup --
  *
- *	Helper function for Tcl_GetsObj() to restore the channel after
- *	a "gets" operation.
+ *	Helper function for Tcl_GetsObj() to restore the channel after a
+ *	"gets" operation.
  *
  * Results:
  *	None.
@@ -4285,19 +4996,19 @@ PeekAhead(chanPtr, dstEndPtr, gsPtr)
  *
  *---------------------------------------------------------------------------
  */
- 
+
 static void
-CommonGetsCleanup(chanPtr, encoding)
-    Channel *chanPtr;
-    Tcl_Encoding encoding;
+CommonGetsCleanup(
+    Channel *chanPtr)
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr, *nextPtr;
-    
+
     bufPtr = statePtr->inQueueHead;
     for ( ; bufPtr != NULL; bufPtr = nextPtr) {
 	nextPtr = bufPtr->nextPtr;
-	if (bufPtr->nextRemoved < bufPtr->nextAdded) {
+	if (IsBufferReady(bufPtr)) {
 	    break;
 	}
 	RecycleBuffer(statePtr, bufPtr, 0);
@@ -4309,20 +5020,20 @@ CommonGetsCleanup(chanPtr, encoding)
 	/*
 	 * If any multi-byte characters were split across channel buffer
 	 * boundaries, the split-up bytes were moved to the next channel
-	 * buffer by FilterInputBytes().  Move the bytes back to their
-	 * original buffer because the caller could change the channel's
-	 * encoding which could change the interpretation of whether those
-	 * bytes really made up multi-byte characters after all.
+	 * buffer by FilterInputBytes(). Move the bytes back to their original
+	 * buffer because the caller could change the channel's encoding which
+	 * could change the interpretation of whether those bytes really made
+	 * up multi-byte characters after all.
 	 */
-	 
+
 	nextPtr = bufPtr->nextPtr;
 	for ( ; nextPtr != NULL; nextPtr = bufPtr->nextPtr) {
 	    int extra;
 
-	    extra = bufPtr->bufLength - bufPtr->nextAdded;
+	    extra = SpaceLeft(bufPtr);
 	    if (extra > 0) {
-		memcpy((VOID *) (bufPtr->buf + bufPtr->nextAdded),
-			(VOID *) (nextPtr->buf + BUFFER_PADDING - extra),
+		memcpy(InsertPoint(bufPtr),
+			nextPtr->buf + BUFFER_PADDING - extra,
 			(size_t) extra);
 		bufPtr->nextAdded += extra;
 		nextPtr->nextRemoved = BUFFER_PADDING;
@@ -4330,9 +5041,6 @@ CommonGetsCleanup(chanPtr, encoding)
 	    bufPtr = nextPtr;
 	}
     }
-    if (statePtr->encoding == NULL) {
-	Tcl_FreeEncoding(encoding);
-    }
 }
 
 /*
@@ -4340,16 +5048,16 @@ CommonGetsCleanup(chanPtr, encoding)
  *
  * Tcl_Read --
  *
- *	Reads a given number of bytes from a channel.  EOL and EOF
- *	translation is done on the bytes being read, so the the number
- *	of bytes consumed from the channel may not be equal to the
- *	number of bytes stored in the destination buffer.
+ *	Reads a given number of bytes from a channel. EOL and EOF translation
+ *	is done on the bytes being read, so the number of bytes consumed from
+ *	the channel may not be equal to the number of bytes stored in the
+ *	destination buffer.
  *
  *	No encoding conversions are applied to the bytes being read.
  *
  * Results:
- *	The number of bytes read, or -1 on error. Use Tcl_GetErrno()
- *	to retrieve the error code for the error that occurred.
+ *	The number of bytes read, or -1 on error. Use Tcl_GetErrno() to
+ *	retrieve the error code for the error that occurred.
  *
  * Side effects:
  *	May cause input to be buffered.
@@ -4358,13 +5066,14 @@ CommonGetsCleanup(chanPtr, encoding)
  */
 
 int
-Tcl_Read(chan, dst, bytesToRead)
-    Tcl_Channel chan;		/* The channel from which to read. */
-    char *dst;			/* Where to store input read. */
-    int bytesToRead;		/* Maximum number of bytes to read. */
+Tcl_Read(
+    Tcl_Channel chan,		/* The channel from which to read. */
+    char *dst,			/* Where to store input read. */
+    int bytesToRead)		/* Maximum number of bytes to read. */
 {
-    Channel *chanPtr = (Channel *) chan;		
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    Channel *chanPtr = (Channel *) chan;
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
 
     /*
      * This operation should occur at the top of a channel stack.
@@ -4384,16 +5093,16 @@ Tcl_Read(chan, dst, bytesToRead)
  *
  * Tcl_ReadRaw --
  *
- *	Reads a given number of bytes from a channel.  EOL and EOF
- *	translation is done on the bytes being read, so the the number
- *	of bytes consumed from the channel may not be equal to the
- *	number of bytes stored in the destination buffer.
+ *	Reads a given number of bytes from a channel. EOL and EOF translation
+ *	is done on the bytes being read, so the number of bytes consumed from
+ *	the channel may not be equal to the number of bytes stored in the
+ *	destination buffer.
  *
  *	No encoding conversions are applied to the bytes being read.
  *
  * Results:
- *	The number of bytes read, or -1 on error. Use Tcl_GetErrno()
- *	to retrieve the error code for the error that occurred.
+ *	The number of bytes read, or -1 on error. Use Tcl_GetErrno() to
+ *	retrieve the error code for the error that occurred.
  *
  * Side effects:
  *	May cause input to be buffered.
@@ -4402,22 +5111,22 @@ Tcl_Read(chan, dst, bytesToRead)
  */
 
 int
-Tcl_ReadRaw(chan, bufPtr, bytesToRead)
-    Tcl_Channel chan;		/* The channel from which to read. */
-    char *bufPtr;		/* Where to store input read. */
-    int bytesToRead;		/* Maximum number of bytes to read. */
+Tcl_ReadRaw(
+    Tcl_Channel chan,		/* The channel from which to read. */
+    char *bufPtr,		/* Where to store input read. */
+    int bytesToRead)		/* Maximum number of bytes to read. */
 {
-    Channel *chanPtr = (Channel *) chan;		
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
-    int nread, result;
-    int copied, copiedNow;
+    Channel *chanPtr = (Channel *) chan;
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+    int nread, result, copied, copiedNow;
 
     /*
      * The check below does too much because it will reject a call to this
      * function with a channel which is part of an 'fcopy'. But we have to
-     * allow this here or else the chaining in the transformation drivers
-     * will fail with 'file busy' error instead of retrieving and
-     * transforming the data to copy.
+     * allow this here or else the chaining in the transformation drivers will
+     * fail with 'file busy' error instead of retrieving and transforming the
+     * data to copy.
      *
      * We let the check procedure now believe that there is no fcopy in
      * progress. A better solution than this might be an additional flag
@@ -4429,102 +5138,113 @@ Tcl_ReadRaw(chan, bufPtr, bytesToRead)
     }
 
     /*
-     * Check for information in the push-back buffers. If there is
-     * some, use it. Go to the driver only if there is none (anymore)
-     * and the caller requests more bytes.
+     * Check for information in the push-back buffers. If there is some, use
+     * it. Go to the driver only if there is none (anymore) and the caller
+     * requests more bytes.
      */
 
     for (copied = 0; copied < bytesToRead; copied += copiedNow) {
-        copiedNow = CopyBuffer(chanPtr, bufPtr + copied,
-                bytesToRead - copied);
-        if (copiedNow == 0) {
-            if (statePtr->flags & CHANNEL_EOF) {
+	copiedNow = CopyBuffer(chanPtr, bufPtr + copied,
+		bytesToRead - copied);
+	if (copiedNow == 0) {
+	    if (statePtr->flags & CHANNEL_EOF) {
 		goto done;
-            }
-            if (statePtr->flags & CHANNEL_BLOCKED) {
-                if (statePtr->flags & CHANNEL_NONBLOCKING) {
+	    }
+	    if (statePtr->flags & CHANNEL_BLOCKED) {
+		if (statePtr->flags & CHANNEL_NONBLOCKING) {
 		    goto done;
-                }
-                statePtr->flags &= (~(CHANNEL_BLOCKED));
-            }
+		}
+		ResetFlag(statePtr, CHANNEL_BLOCKED);
+	    }
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-	    /* [SF Tcl Bug 943274]. Better emulation of non-blocking
-	     * channels for channels without BlockModeProc, by keeping
-	     * track of true fileevents generated by the OS == Data
-	     * waiting and reading if and only if we are sure to have
-	     * data.
+	    /*
+	     * [Bug 943274]. Better emulation of non-blocking channels for
+	     * channels without BlockModeProc, by keeping track of true
+	     * fileevents generated by the OS == Data waiting and reading if
+	     * and only if we are sure to have data.
 	     */
 
 	    if ((statePtr->flags & CHANNEL_NONBLOCKING) &&
-		(Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL) &&
-		!(statePtr->flags & CHANNEL_HAS_MORE_DATA)) {
+		    (Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL) &&
+		    !(statePtr->flags & CHANNEL_HAS_MORE_DATA)) {
+		/*
+		 * We bypass the driver; it would block as no data is
+		 * available.
+		 */
 
-	        /* We bypass the driver, it would block, as no data is available */
-	        nread  = -1;
-	        result = EWOULDBLOCK;
+		nread = -1;
+		result = EWOULDBLOCK;
 	    } else {
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
-	      /*
-	       * Now go to the driver to get as much as is possible to
-	       * fill the remaining request. Do all the error handling
-	       * by ourselves.  The code was stolen from 'GetInput' and
-	       * slightly adapted (different return value here).
-	       *
-	       * The case of 'bytesToRead == 0' at this point cannot happen.
-	       */
-
-	      nread = (chanPtr->typePtr->inputProc)(chanPtr->instanceData,
-			  bufPtr + copied, bytesToRead - copied, &result);
+
+		/*
+		 * Now go to the driver to get as much as is possible to fill
+		 * the remaining request. Do all the error handling by
+		 * ourselves. The code was stolen from 'GetInput' and slightly
+		 * adapted (different return value here).
+		 *
+		 * The case of 'bytesToRead == 0' at this point cannot happen.
+		 */
+
+		nread = (chanPtr->typePtr->inputProc)(chanPtr->instanceData,
+			bufPtr + copied, bytesToRead - copied, &result);
+
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
 	    }
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
+
 	    if (nread > 0) {
-	        /*
-		 * If we get a short read, signal up that we may be
-		 * BLOCKED. We should avoid calling the driver because
-		 * on some platforms we will block in the low level
-		 * reading code even though the channel is set into
-		 * nonblocking mode.
+		/*
+		 * If we get a short read, signal up that we may be BLOCKED.
+		 * We should avoid calling the driver because on some
+		 * platforms we will block in the low level reading code even
+		 * though the channel is set into nonblocking mode.
 		 */
-            
-	        if (nread < (bytesToRead - copied)) {
-		    statePtr->flags |= CHANNEL_BLOCKED;
+
+		if (nread < (bytesToRead - copied)) {
+		    SetFlag(statePtr, CHANNEL_BLOCKED);
 		}
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-	        if (nread <= (bytesToRead - copied)) {
-		    /* [SF Tcl Bug 943274] We have read the available
-		     * data, clear flag */
-		    statePtr->flags &= ~CHANNEL_HAS_MORE_DATA;
+		if (nread <= (bytesToRead - copied)) {
+		    /*
+		     * [Bug 943274] We have read the available data, clear
+		     * flag.
+		     */
+
+		    ResetFlag(statePtr, CHANNEL_HAS_MORE_DATA);
 		}
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
+
 	    } else if (nread == 0) {
-	        statePtr->flags |= CHANNEL_EOF;
+		SetFlag(statePtr, CHANNEL_EOF);
 		statePtr->inputEncodingFlags |= TCL_ENCODING_END;
+
 	    } else if (nread < 0) {
-	        if ((result == EWOULDBLOCK) || (result == EAGAIN)) {
+		if ((result == EWOULDBLOCK) || (result == EAGAIN)) {
 		    if (copied > 0) {
-		      /*
-		       * Information that was copied earlier has precedence
-		       * over EAGAIN/WOULDBLOCK handling.
-		       */
-		      return copied;
+			/*
+			 * Information that was copied earlier has precedence
+			 * over EAGAIN/WOULDBLOCK handling.
+			 */
+
+			return copied;
 		    }
 
-		    statePtr->flags |= CHANNEL_BLOCKED;
+		    SetFlag(statePtr, CHANNEL_BLOCKED);
 		    result = EAGAIN;
 		}
 
 		Tcl_SetErrno(result);
 		return -1;
-	    } 
+	    }
 
 	    return copied + nread;
-        }
+	}
     }
 
-done:
+  done:
     return copied;
 }
 
@@ -4533,39 +5253,39 @@ done:
  *
  * Tcl_ReadChars --
  *
- *	Reads from the channel until the requested number of characters
- *	have been seen, EOF is seen, or the channel would block.  EOL
- *	and EOF translation is done.  If reading binary data, the raw
- *	bytes are wrapped in a Tcl byte array object.  Otherwise, the raw
- *	bytes are converted to UTF-8 using the channel's current encoding
- *	and stored in a Tcl string object.
+ *	Reads from the channel until the requested number of characters have
+ *	been seen, EOF is seen, or the channel would block. EOL and EOF
+ *	translation is done. If reading binary data, the raw bytes are wrapped
+ *	in a Tcl byte array object. Otherwise, the raw bytes are converted to
+ *	UTF-8 using the channel's current encoding and stored in a Tcl string
+ *	object.
  *
  * Results:
- *	The number of characters read, or -1 on error. Use Tcl_GetErrno()
- *	to retrieve the error code for the error that occurred.
+ *	The number of characters read, or -1 on error. Use Tcl_GetErrno() to
+ *	retrieve the error code for the error that occurred.
  *
  * Side effects:
  *	May cause input to be buffered.
  *
  *---------------------------------------------------------------------------
  */
- 
+
 int
-Tcl_ReadChars(chan, objPtr, toRead, appendFlag)
-    Tcl_Channel chan;		/* The channel to read. */
-    Tcl_Obj *objPtr;		/* Input data is stored in this object. */
-    int toRead;			/* Maximum number of characters to store,
-				 * or -1 to read all available data (up to EOF
-				 * or when channel blocks). */
-    int appendFlag;		/* If non-zero, data read from the channel
-				 * will be appended to the object.  Otherwise,
+Tcl_ReadChars(
+    Tcl_Channel chan,		/* The channel to read. */
+    Tcl_Obj *objPtr,		/* Input data is stored in this object. */
+    int toRead,			/* Maximum number of characters to store, or
+				 * -1 to read all available data (up to EOF or
+				 * when channel blocks). */
+    int appendFlag)		/* If non-zero, data read from the channel
+				 * will be appended to the object. Otherwise,
 				 * the data will replace the existing contents
 				 * of the object. */
-
 {
-    Channel*      chanPtr  = (Channel *) chan;
-    ChannelState* statePtr = chanPtr->state;	/* state info for channel */
-    
+    Channel *chanPtr = (Channel *) chan;
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+
     /*
      * This operation should occur at the top of a channel stack.
      */
@@ -4573,52 +5293,53 @@ Tcl_ReadChars(chan, objPtr, toRead, appendFlag)
     chanPtr = statePtr->topChanPtr;
 
     if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
-        /*
+	/*
 	 * Update the notifier state so we don't block while there is still
 	 * data in the buffers.
 	 */
-        UpdateInterest(chanPtr);
+
+	UpdateInterest(chanPtr);
 	return -1;
     }
 
-    return DoReadChars (chanPtr, objPtr, toRead, appendFlag);
+    return DoReadChars(chanPtr, objPtr, toRead, appendFlag);
 }
 /*
  *---------------------------------------------------------------------------
  *
  * DoReadChars --
  *
- *	Reads from the channel until the requested number of characters
- *	have been seen, EOF is seen, or the channel would block.  EOL
- *	and EOF translation is done.  If reading binary data, the raw
- *	bytes are wrapped in a Tcl byte array object.  Otherwise, the raw
- *	bytes are converted to UTF-8 using the channel's current encoding
- *	and stored in a Tcl string object.
+ *	Reads from the channel until the requested number of characters have
+ *	been seen, EOF is seen, or the channel would block. EOL and EOF
+ *	translation is done. If reading binary data, the raw bytes are wrapped
+ *	in a Tcl byte array object. Otherwise, the raw bytes are converted to
+ *	UTF-8 using the channel's current encoding and stored in a Tcl string
+ *	object.
  *
  * Results:
- *	The number of characters read, or -1 on error. Use Tcl_GetErrno()
- *	to retrieve the error code for the error that occurred.
+ *	The number of characters read, or -1 on error. Use Tcl_GetErrno() to
+ *	retrieve the error code for the error that occurred.
  *
  * Side effects:
  *	May cause input to be buffered.
  *
  *---------------------------------------------------------------------------
  */
- 
+
 static int
-DoReadChars(chanPtr, objPtr, toRead, appendFlag)
-    Channel* chanPtr;		/* The channel to read. */
-    Tcl_Obj *objPtr;		/* Input data is stored in this object. */
-    int toRead;			/* Maximum number of characters to store,
-				 * or -1 to read all available data (up to EOF
-				 * or when channel blocks). */
-    int appendFlag;		/* If non-zero, data read from the channel
-				 * will be appended to the object.  Otherwise,
+DoReadChars(
+    Channel *chanPtr,		/* The channel to read. */
+    Tcl_Obj *objPtr,		/* Input data is stored in this object. */
+    int toRead,			/* Maximum number of characters to store, or
+				 * -1 to read all available data (up to EOF or
+				 * when channel blocks). */
+    int appendFlag)		/* If non-zero, data read from the channel
+				 * will be appended to the object. Otherwise,
 				 * the data will replace the existing contents
 				 * of the object. */
-
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelBuffer *bufPtr;
     int offset, factor, copied, copiedNow, result;
     Tcl_Encoding encoding;
@@ -4628,28 +5349,30 @@ DoReadChars(chanPtr, objPtr, toRead, appendFlag)
      * This operation should occur at the top of a channel stack.
      */
 
-    chanPtr  = statePtr->topChanPtr;
+    chanPtr = statePtr->topChanPtr;
     encoding = statePtr->encoding;
-    factor   = UTF_EXPANSION_FACTOR;
+    factor = UTF_EXPANSION_FACTOR;
 
     if (appendFlag == 0) {
 	if (encoding == NULL) {
 	    Tcl_SetByteArrayLength(objPtr, 0);
 	} else {
 	    Tcl_SetObjLength(objPtr, 0);
-	    /* 
-	     * We're going to access objPtr->bytes directly, so
-	     * we must ensure that this is actually a string
-	     * object (otherwise it might have been pure Unicode).
+
+	    /*
+	     * We're going to access objPtr->bytes directly, so we must ensure
+	     * that this is actually a string object (otherwise it might have
+	     * been pure Unicode).
 	     */
-	    Tcl_GetString(objPtr);
+
+	    TclGetString(objPtr);
 	}
 	offset = 0;
     } else {
 	if (encoding == NULL) {
 	    Tcl_GetByteArrayFromObj(objPtr, &offset);
 	} else {
-	    Tcl_GetStringFromObj(objPtr, &offset);
+	    TclGetStringFromObj(objPtr, &offset);
 	}
     }
 
@@ -4668,7 +5391,7 @@ DoReadChars(chanPtr, objPtr, toRead, appendFlag)
 	     */
 
 	    bufPtr = statePtr->inQueueHead;
-	    if (bufPtr->nextRemoved == bufPtr->nextAdded) {
+	    if (IsBufferEmpty(bufPtr)) {
 		ChannelBuffer *nextPtr;
 
 		nextPtr = bufPtr->nextPtr;
@@ -4679,6 +5402,7 @@ DoReadChars(chanPtr, objPtr, toRead, appendFlag)
 		}
 	    }
 	}
+
 	if (copiedNow < 0) {
 	    if (statePtr->flags & CHANNEL_EOF) {
 		break;
@@ -4687,7 +5411,7 @@ DoReadChars(chanPtr, objPtr, toRead, appendFlag)
 		if (statePtr->flags & CHANNEL_NONBLOCKING) {
 		    break;
 		}
-		statePtr->flags &= ~CHANNEL_BLOCKED;
+		ResetFlag(statePtr, CHANNEL_BLOCKED);
 	    }
 	    result = GetInput(chanPtr);
 	    if (result != 0) {
@@ -4702,41 +5426,42 @@ DoReadChars(chanPtr, objPtr, toRead, appendFlag)
 	    toRead -= copiedNow;
 	}
     }
-    statePtr->flags &= ~CHANNEL_BLOCKED;
+
+    ResetFlag(statePtr, CHANNEL_BLOCKED);
     if (encoding == NULL) {
 	Tcl_SetByteArrayLength(objPtr, offset);
     } else {
 	Tcl_SetObjLength(objPtr, offset);
     }
 
-    done:
     /*
-     * Update the notifier state so we don't block while there is still
-     * data in the buffers.
+     * Update the notifier state so we don't block while there is still data
+     * in the buffers.
      */
 
+  done:
     UpdateInterest(chanPtr);
     return copied;
 }
+
 /*
  *---------------------------------------------------------------------------
  *
  * ReadBytes --
  *
- *	Reads from the channel until the requested number of bytes have
- *	been seen, EOF is seen, or the channel would block.  Bytes from
- *	the channel are stored in objPtr as a ByteArray object.  EOL
- *	and EOF translation are done.
+ *	Reads from the channel until the requested number of bytes have been
+ *	seen, EOF is seen, or the channel would block. Bytes from the channel
+ *	are stored in objPtr as a ByteArray object. EOL and EOF translation
+ *	are done.
  *
- *	'bytesToRead' can safely be a very large number because
- *	space is only allocated to hold data read from the channel
- *	as needed.
+ *	'bytesToRead' can safely be a very large number because space is only
+ *	allocated to hold data read from the channel as needed.
  *
  * Results:
- *	The return value is the number of bytes appended to the object
- *	and *offsetPtr is filled with the total number of bytes in the
- *	object (greater than the return value if there were already bytes
- *	in the object).
+ *	The return value is the number of bytes appended to the object and
+ *	*offsetPtr is filled with the total number of bytes in the object
+ *	(greater than the return value if there were already bytes in the
+ *	object).
  *
  * Side effects:
  *	None.
@@ -4745,25 +5470,24 @@ DoReadChars(chanPtr, objPtr, toRead, appendFlag)
  */
 
 static int
-ReadBytes(statePtr, objPtr, bytesToRead, offsetPtr)
-    ChannelState *statePtr;	/* State of the channel to read. */
-    Tcl_Obj *objPtr;		/* Input data is appended to this ByteArray
-				 * object.  Its length is how much space
-				 * has been allocated to hold data, not how
-				 * many bytes of data have been stored in the
+ReadBytes(
+    ChannelState *statePtr,	/* State of the channel to read. */
+    Tcl_Obj *objPtr,		/* Input data is appended to this ByteArray
+				 * object. Its length is how much space has
+				 * been allocated to hold data, not how many
+				 * bytes of data have been stored in the
 				 * object. */
-    int bytesToRead;		/* Maximum number of bytes to store,
-				 * or < 0 to get all available bytes.
-				 * Bytes are obtained from the first
-				 * buffer in the queue -- even if this number
-				 * is larger than the number of bytes
-				 * available in the first buffer, only the
-				 * bytes from the first buffer are
+    int bytesToRead,		/* Maximum number of bytes to store, or < 0 to
+				 * get all available bytes. Bytes are obtained
+				 * from the first buffer in the queue - even
+				 * if this number is larger than the number of
+				 * bytes available in the first buffer, only
+				 * the bytes from the first buffer are
 				 * returned. */
-    int *offsetPtr;		/* On input, contains how many bytes of
-				 * objPtr have been used to hold data.  On
-				 * output, filled with how many bytes are now
-				 * being used. */
+    int *offsetPtr)		/* On input, contains how many bytes of objPtr
+				 * have been used to hold data. On output,
+				 * filled with how many bytes are now being
+				 * used. */
 {
     int toRead, srcLen, offset, length, srcRead, dstWrote;
     ChannelBuffer *bufPtr;
@@ -4771,9 +5495,9 @@ ReadBytes(statePtr, objPtr, bytesToRead, offsetPtr)
 
     offset = *offsetPtr;
 
-    bufPtr = statePtr->inQueueHead; 
-    src = bufPtr->buf + bufPtr->nextRemoved;
-    srcLen = bufPtr->nextAdded - bufPtr->nextRemoved;
+    bufPtr = statePtr->inQueueHead;
+    src = RemovePoint(bufPtr);
+    srcLen = BytesLeft(bufPtr);
 
     toRead = bytesToRead;
     if ((unsigned) toRead > (unsigned) srcLen) {
@@ -4783,9 +5507,9 @@ ReadBytes(statePtr, objPtr, bytesToRead, offsetPtr)
     dst = (char *) Tcl_GetByteArrayFromObj(objPtr, &length);
     if (toRead > length - offset - 1) {
 	/*
-	 * Double the existing size of the object or make enough room to
-	 * hold all the characters we may get from the source buffer,
-	 * whichever is larger.
+	 * Double the existing size of the object or make enough room to hold
+	 * all the characters we may get from the source buffer, whichever is
+	 * larger.
 	 */
 
 	length = offset * 2;
@@ -4797,7 +5521,7 @@ ReadBytes(statePtr, objPtr, bytesToRead, offsetPtr)
     dst += offset;
 
     if (statePtr->flags & INPUT_NEED_NL) {
-	statePtr->flags &= ~INPUT_NEED_NL;
+	ResetFlag(statePtr, INPUT_NEED_NL);
 	if ((srcLen == 0) || (*src != '\n')) {
 	    *dst = '\r';
 	    *offsetPtr += 1;
@@ -4826,21 +5550,21 @@ ReadBytes(statePtr, objPtr, bytesToRead, offsetPtr)
  *
  * ReadChars --
  *
- *	Reads from the channel until the requested number of UTF-8
- *	characters have been seen, EOF is seen, or the channel would
- *	block.  Raw bytes from the channel are converted to UTF-8
- *	and stored in objPtr.  EOL and EOF translation is done.
+ *	Reads from the channel until the requested number of UTF-8 characters
+ *	have been seen, EOF is seen, or the channel would block. Raw bytes
+ *	from the channel are converted to UTF-8 and stored in objPtr. EOL and
+ *	EOF translation is done.
  *
- *	'charsToRead' can safely be a very large number because
- *	space is only allocated to hold data read from the channel
- *	as needed.
+ *	'charsToRead' can safely be a very large number because space is only
+ *	allocated to hold data read from the channel as needed.
+ *
+ *	'charsToRead' may *not* be 0.
  *
  * Results:
- *	The return value is the number of characters appended to
- *	the object, *offsetPtr is filled with the number of bytes that
- *	were appended, and *factorPtr is filled with the expansion
- *	factor used to guess how many bytes of UTF-8 to allocate to
- *	hold N source bytes.
+ *	The return value is the number of characters appended to the object,
+ *	*offsetPtr is filled with the number of bytes that were appended, and
+ *	*factorPtr is filled with the expansion factor used to guess how many
+ *	bytes of UTF-8 to allocate to hold N source bytes.
  *
  * Side effects:
  *	None.
@@ -4849,31 +5573,31 @@ ReadBytes(statePtr, objPtr, bytesToRead, offsetPtr)
  */
 
 static int
-ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
-    ChannelState *statePtr;	/* State of channel to read. */
-    Tcl_Obj *objPtr;		/* Input data is appended to this object.
+ReadChars(
+    ChannelState *statePtr,	/* State of channel to read. */
+    Tcl_Obj *objPtr,		/* Input data is appended to this object.
 				 * objPtr->length is how much space has been
 				 * allocated to hold data, not how many bytes
 				 * of data have been stored in the object. */
-    int charsToRead;		/* Maximum number of characters to store,
-				 * or -1 to get all available characters.
+    int charsToRead,		/* Maximum number of characters to store, or
+				 * -1 to get all available characters.
 				 * Characters are obtained from the first
 				 * buffer in the queue -- even if this number
 				 * is larger than the number of characters
 				 * available in the first buffer, only the
 				 * characters from the first buffer are
 				 * returned. */
-    int *offsetPtr;		/* On input, contains how many bytes of
-				 * objPtr have been used to hold data.  On
-				 * output, filled with how many bytes are now
-				 * being used. */
-    int *factorPtr;		/* On input, contains a guess of how many
+    int *offsetPtr,		/* On input, contains how many bytes of objPtr
+				 * have been used to hold data. On output,
+				 * filled with how many bytes are now being
+				 * used. */
+    int *factorPtr)		/* On input, contains a guess of how many
 				 * bytes need to be allocated to hold the
 				 * result of converting N source bytes to
-				 * UTF-8.  On output, contains another guess
+				 * UTF-8. On output, contains another guess
 				 * based on the data seen so far. */
 {
-    int toRead, factor, offset, spaceLeft, length, srcLen, dstNeeded;
+    int toRead, factor, offset, spaceLeft, srcLen, dstNeeded;
     int srcRead, dstWrote, numChars, dstRead;
     ChannelBuffer *bufPtr;
     char *src, *dst;
@@ -4883,9 +5607,9 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
     factor = *factorPtr;
     offset = *offsetPtr;
 
-    bufPtr = statePtr->inQueueHead; 
-    src    = bufPtr->buf + bufPtr->nextRemoved;
-    srcLen = bufPtr->nextAdded - bufPtr->nextRemoved;
+    bufPtr = statePtr->inQueueHead;
+    src = RemovePoint(bufPtr);
+    srcLen = BytesLeft(bufPtr);
 
     toRead = charsToRead;
     if ((unsigned)toRead > (unsigned)srcLen) {
@@ -4893,35 +5617,38 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
     }
 
     /*
-     * 'factor' is how much we guess that the bytes in the source buffer
-     * will expand when converted to UTF-8 chars.  This guess comes from
-     * analyzing how many characters were produced by the previous
-     * pass.
+     * 'factor' is how much we guess that the bytes in the source buffer will
+     * expand when converted to UTF-8 chars. This guess comes from analyzing
+     * how many characters were produced by the previous pass.
      */
 
-    dstNeeded = toRead * factor / UTF_EXPANSION_FACTOR;
-    spaceLeft = objPtr->length - offset - TCL_UTF_MAX - 1;
+    dstNeeded = TCL_UTF_MAX - 1 + toRead * factor / UTF_EXPANSION_FACTOR;
+    spaceLeft = objPtr->length - offset;
 
     if (dstNeeded > spaceLeft) {
 	/*
-	 * Double the existing size of the object or make enough room to
-	 * hold all the characters we want from the source buffer,
-	 * whichever is larger.
+	 * Double the existing size of the object or make enough room to hold
+	 * all the characters we want from the source buffer, whichever is
+	 * larger.
 	 */
 
-	length = offset * 2;
-	if (offset < dstNeeded) {
+	int length = offset + ((offset < dstNeeded) ? dstNeeded : offset);
+
+	if (Tcl_AttemptSetObjLength(objPtr, length) == 0) {
 	    length = offset + dstNeeded;
+	    if (Tcl_AttemptSetObjLength(objPtr, length) == 0) {
+		dstNeeded = TCL_UTF_MAX - 1 + toRead;
+		length = offset + dstNeeded;
+		Tcl_SetObjLength(objPtr, length);
+	    }
 	}
 	spaceLeft = length - offset;
-	length += TCL_UTF_MAX + 1;
-	Tcl_SetObjLength(objPtr, length);
     }
     if (toRead == srcLen) {
 	/*
-	 * Want to convert the whole buffer in one pass.  If we have
-	 * enough space, convert it using all available space in object
-	 * rather than using the factor.
+	 * Want to convert the whole buffer in one pass. If we have enough
+	 * space, convert it using all available space in object rather than
+	 * using the factor.
 	 */
 
 	dstNeeded = spaceLeft;
@@ -4929,51 +5656,48 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
     dst = objPtr->bytes + offset;
 
     /*
-     * SF Tcl Bug 1462248
-     * The cause of the crash reported in the referenced bug is this:
+     * [Bug 1462248]: The cause of the crash reported in this bug is this:
      *
      * - ReadChars, called with a single buffer, with a incomplete
-     *   multi-byte character at the end (only the first byte of it).
+     *	 multi-byte character at the end (only the first byte of it).
      * - Encoding translation fails, asks for more data
      * - Data is read, and eof is reached, TCL_ENCODING_END (TEE) is set.
-     * - ReadChar is called again, converts the first buffer, but due
-     *   to TEE it does not check for incomplete multi-byte data, and the
-     *   character just after the end of the first buffer is a valid
-     *   completion of the multi-byte header in the actual buffer. The
-     *   conversion reads more characters from the buffer then present.
-     *   This causes nextRemoved to overshoot nextAdded and the next
-     *   reads compute a negative srcLen, cause further translations to
-     *   fail, causing copying of data into the next buffer using bad
-     *   arguments, causing the mecpy for to eventually fail.
+     * - ReadChar is called again, converts the first buffer, but due to TEE
+     *	 it does not check for incomplete multi-byte data, and the character
+     *	 just after the end of the first buffer is a valid completion of the
+     *	 multi-byte header in the actual buffer. The conversion reads more
+     *	 characters from the buffer then present. This causes nextRemoved to
+     *	 overshoot nextAdded and the next reads compute a negative srcLen,
+     *	 cause further translations to fail, causing copying of data into the
+     *	 next buffer using bad arguments, causing the mecpy for to eventually
+     *	 fail.
      *
-     * In the end it is a memory access bug spiraling out of control
-     * if the conditions are _just so_. And ultimate cause is that TEE
-     * is given to a conversion where it should not. TEE signals that
-     * this is the last buffer. Except in our case it is not.
+     * In the end it is a memory access bug spiraling out of control if the
+     * conditions are _just so_. And ultimate cause is that TEE is given to a
+     * conversion where it should not. TEE signals that this is the last
+     * buffer. Except in our case it is not.
      *
-     * My solution is to suppress TEE if the first buffer is not the
-     * last. We will eventually need it given that EOF has been
-     * reached, but not right now. This is what the new flag
-     * "endEncSuppressFlag" is for.
+     * My solution is to suppress TEE if the first buffer is not the last. We
+     * will eventually need it given that EOF has been reached, but not right
+     * now. This is what the new flag "endEncSuppressFlag" is for.
      *
-     * The bug in 'Tcl_Utf2UtfProc' where it read from memory behind
-     * the actual buffer has been fixed as well, and fixes the problem
-     * with the crash too, but this would still allow the generic
-     * layer to accidentially break a multi-byte sequence if the
-     * conditions are just right, because again the ExternalToUtf
-     * would be successful where it should not.
+     * The bug in 'Tcl_Utf2UtfProc' where it read from memory behind the
+     * actual buffer has been fixed as well, and fixes the problem with the
+     * crash too, but this would still allow the generic layer to
+     * accidentially break a multi-byte sequence if the conditions are just
+     * right, because again the ExternalToUtf would be successful where it
+     * should not.
      */
 
     if ((statePtr->inputEncodingFlags & TCL_ENCODING_END) &&
-	(bufPtr->nextPtr != NULL)) {
-
-        /* TEE is set for a buffer which is not the last. Squash it
-	 * for now, and restore it later, before yielding control to
-	 * our caller.
+	    (bufPtr->nextPtr != NULL)) {
+	/*
+	 * TEE is set for a buffer which is not the last. Squash it for now,
+	 * and restore it later, before yielding control to our caller.
 	 */
 
-        statePtr->inputEncodingFlags &= ~TCL_ENCODING_END;
-        encEndFlagSuppressed = 1;
+	statePtr->inputEncodingFlags &= ~TCL_ENCODING_END;
+	encEndFlagSuppressed = 1;
     }
 
     oldState = statePtr->inputEncodingState;
@@ -4982,19 +5706,19 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
 	 * We want a '\n' because the last character we saw was '\r'.
 	 */
 
-	statePtr->flags &= ~INPUT_NEED_NL;
+	ResetFlag(statePtr, INPUT_NEED_NL);
 	Tcl_ExternalToUtf(NULL, statePtr->encoding, src, srcLen,
 		statePtr->inputEncodingFlags, &statePtr->inputEncodingState,
 		dst, TCL_UTF_MAX + 1, &srcRead, &dstWrote, &numChars);
 	if ((dstWrote > 0) && (*dst == '\n')) {
 	    /*
-	     * The next char was a '\n'.  Consume it and produce a '\n'.
+	     * The next char was a '\n'. Consume it and produce a '\n'.
 	     */
 
 	    bufPtr->nextRemoved += srcRead;
 	} else {
 	    /*
-	     * The next char was not a '\n'.  Produce a '\r'.
+	     * The next char was not a '\n'. Produce a '\r'.
 	     */
 
 	    *dst = '\r';
@@ -5005,67 +5729,64 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
 	if (encEndFlagSuppressed) {
 	    statePtr->inputEncodingFlags |= TCL_ENCODING_END;
 	}
-        return 1;
+	return 1;
     }
 
     Tcl_ExternalToUtf(NULL, statePtr->encoding, src, srcLen,
 	    statePtr->inputEncodingFlags, &statePtr->inputEncodingState, dst,
-	    dstNeeded + TCL_UTF_MAX, &srcRead, &dstWrote, &numChars);
+	    dstNeeded + 1, &srcRead, &dstWrote, &numChars);
 
     if (encEndFlagSuppressed) {
-        statePtr->inputEncodingFlags |= TCL_ENCODING_END;
+	statePtr->inputEncodingFlags |= TCL_ENCODING_END;
     }
 
     if (srcRead == 0) {
 	/*
-	 * Not enough bytes in src buffer to make a complete char.  Copy
-	 * the bytes to the next buffer to make a new contiguous string,
-	 * then tell the caller to fill the buffer with more bytes.
+	 * Not enough bytes in src buffer to make a complete char. Copy the
+	 * bytes to the next buffer to make a new contiguous string, then tell
+	 * the caller to fill the buffer with more bytes.
 	 */
 
 	ChannelBuffer *nextPtr;
-	
+
 	nextPtr = bufPtr->nextPtr;
 	if (nextPtr == NULL) {
 	    if (srcLen > 0) {
-	        /*
+		/*
 		 * There isn't enough data in the buffers to complete the next
 		 * character, so we need to wait for more data before the next
-		 * file event can be delivered.
-		 *
-		 * SF #478856.
+		 * file event can be delivered. [Bug 478856]
 		 *
-		 * The exception to this is if the input buffer was
-		 * completely empty before we tried to convert its
-		 * contents. Nothing in, nothing out, and no incomplete
-		 * character data. The conversion before the current one
-		 * was complete.
+		 * The exception to this is if the input buffer was completely
+		 * empty before we tried to convert its contents. Nothing in,
+		 * nothing out, and no incomplete character data. The
+		 * conversion before the current one was complete.
 		 */
 
-	        statePtr->flags |= CHANNEL_NEED_MORE_DATA;
+		SetFlag(statePtr, CHANNEL_NEED_MORE_DATA);
 	    }
 	    return -1;
 	}
 
-	/* Space is made at the beginning of the buffer to copy the
-	 * previous unused bytes there. Check first if the buffer we
-	 * are using actually has enough space at its beginning for
-	 * the data we are copying. Because if not we will write over the
-	 * buffer management information, especially the 'nextPtr'.
+	/*
+	 * Space is made at the beginning of the buffer to copy the previous
+	 * unused bytes there. Check first if the buffer we are using actually
+	 * has enough space at its beginning for the data we are copying.
+	 * Because if not we will write over the buffer management
+	 * information, especially the 'nextPtr'.
 	 *
-	 * Note that the BUFFER_PADDING (See AllocChannelBuffer) is
-	 * used to prevent exactly this situation. I.e. it should
-	 * never happen. Therefore it is ok to panic should it happen
-	 * despite the precautions.
+	 * Note that the BUFFER_PADDING (See AllocChannelBuffer) is used to
+	 * prevent exactly this situation. I.e. it should never happen.
+	 * Therefore it is ok to panic should it happen despite the
+	 * precautions.
 	 */
 
 	if (nextPtr->nextRemoved - srcLen < 0) {
-	    Tcl_Panic ("Buffer Underflow, BUFFER_PADDING not enough");
+	    Tcl_Panic("Buffer Underflow, BUFFER_PADDING not enough");
 	}
 
 	nextPtr->nextRemoved -= srcLen;
-	memcpy((VOID *) (nextPtr->buf + nextPtr->nextRemoved), (VOID *) src,
-		(size_t) srcLen);
+	memcpy(RemovePoint(nextPtr), src, (size_t) srcLen);
 	RecycleBuffer(statePtr, bufPtr, 0);
 	statePtr->inQueueHead = nextPtr;
 	return ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr);
@@ -5074,12 +5795,12 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
     dstRead = dstWrote;
     if (TranslateInputEOL(statePtr, dst, dst, &dstWrote, &dstRead) != 0) {
 	/*
-	 * Hit EOF char.  How many bytes of src correspond to where the
-	 * EOF was located in dst? Run the conversion again with an
-	 * output buffer just big enough to hold the data so we can
-	 * get the correct value for srcRead.
+	 * Hit EOF char. How many bytes of src correspond to where the EOF was
+	 * located in dst? Run the conversion again with an output buffer just
+	 * big enough to hold the data so we can get the correct value for
+	 * srcRead.
 	 */
-	 
+
 	if (dstWrote == 0) {
 	    return -1;
 	}
@@ -5088,12 +5809,12 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
 		statePtr->inputEncodingFlags, &statePtr->inputEncodingState,
 		dst, dstRead + TCL_UTF_MAX, &srcRead, &dstWrote, &numChars);
 	TranslateInputEOL(statePtr, dst, dst, &dstWrote, &dstRead);
-    } 
+    }
 
     /*
-     * The number of characters that we got may be less than the number
-     * that we started with because "\r\n" sequences may have been
-     * turned into just '\n' in dst.
+     * The number of characters that we got may be less than the number that
+     * we started with because "\r\n" sequences may have been turned into just
+     * '\n' in dst.
      */
 
     numChars -= (dstRead - dstWrote);
@@ -5103,7 +5824,7 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
 	 * Got too many chars.
 	 */
 
-	CONST char *eof;
+	const char *eof;
 
 	eof = Tcl_UtfAtIndex(dst, toRead);
 	statePtr->inputEncodingState = oldState;
@@ -5129,12 +5850,12 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
  *
  * TranslateInputEOL --
  *
- *	Perform input EOL and EOF translation on the source buffer,
- *	leaving the translated result in the destination buffer.  
+ *	Perform input EOL and EOF translation on the source buffer, leaving
+ *	the translated result in the destination buffer.
  *
  * Results:
  *	The return value is 1 if the EOF character was found when copying
- *	bytes to the destination buffer, 0 otherwise.  
+ *	bytes to the destination buffer, 0 otherwise.
  *
  * Side effects:
  *	None.
@@ -5143,23 +5864,23 @@ ReadChars(statePtr, objPtr, charsToRead, offsetPtr, factorPtr)
  */
 
 static int
-TranslateInputEOL(statePtr, dstStart, srcStart, dstLenPtr, srcLenPtr)
-    ChannelState *statePtr;	/* Channel being read, for EOL translation
-				 * and EOF character. */
-    char *dstStart;		/* Output buffer filled with chars by
-				 * applying appropriate EOL translation to
-				 * source characters. */
-    CONST char *srcStart;	/* Source characters. */
-    int *dstLenPtr;		/* On entry, the maximum length of output
-				 * buffer in bytes; must be <= *srcLenPtr.  On
+TranslateInputEOL(
+    ChannelState *statePtr,	/* Channel being read, for EOL translation and
+				 * EOF character. */
+    char *dstStart,		/* Output buffer filled with chars by applying
+				 * appropriate EOL translation to source
+				 * characters. */
+    const char *srcStart,	/* Source characters. */
+    int *dstLenPtr,		/* On entry, the maximum length of output
+				 * buffer in bytes; must be <= *srcLenPtr. On
 				 * exit, the number of bytes actually used in
 				 * output buffer. */
-    int *srcLenPtr;		/* On entry, the length of source buffer.
-				 * On exit, the number of bytes read from
-				 * the source buffer. */
+    int *srcLenPtr)		/* On entry, the length of source buffer. On
+				 * exit, the number of bytes read from the
+				 * source buffer. */
 {
     int dstLen, srcLen, inEofChar;
-    CONST char *eof;
+    const char *eof;
 
     dstLen = *dstLenPtr;
 
@@ -5167,13 +5888,13 @@ TranslateInputEOL(statePtr, dstStart, srcStart, dstLenPtr, srcLenPtr)
     inEofChar = statePtr->inEofChar;
     if (inEofChar != '\0') {
 	/*
-	 * Find EOF in translated buffer then compress out the EOL.  The
-	 * source buffer may be much longer than the destination buffer --
-	 * we only want to return EOF if the EOF has been copied to the
-	 * destination buffer.
+	 * Find EOF in translated buffer then compress out the EOL. The source
+	 * buffer may be much longer than the destination buffer - we only
+	 * want to return EOF if the EOF has been copied to the destination
+	 * buffer.
 	 */
 
-	CONST char *src, *srcMax;
+	const char *src, *srcMax;
 
 	srcMax = srcStart + *srcLenPtr;
 	for (src = srcStart; src < srcMax; src++) {
@@ -5189,106 +5910,104 @@ TranslateInputEOL(statePtr, dstStart, srcStart, dstLenPtr, srcLenPtr)
 	}
     }
     switch (statePtr->inputTranslation) {
-	case TCL_TRANSLATE_LF: {
-	    if (dstStart != srcStart) {
-		memcpy((VOID *) dstStart, (VOID *) srcStart, (size_t) dstLen);
-	    }
-	    srcLen = dstLen;
-	    break;
-	}
-	case TCL_TRANSLATE_CR: {
-	    char *dst, *dstEnd;
-	    
-	    if (dstStart != srcStart) {
-		memcpy((VOID *) dstStart, (VOID *) srcStart, (size_t) dstLen);
-	    }
-	    dstEnd = dstStart + dstLen;
-	    for (dst = dstStart; dst < dstEnd; dst++) {
-		if (*dst == '\r') {
-		    *dst = '\n';
-		}
+    case TCL_TRANSLATE_LF:
+	if (dstStart != srcStart) {
+	    memcpy(dstStart, srcStart, (size_t) dstLen);
+	}
+	srcLen = dstLen;
+	break;
+    case TCL_TRANSLATE_CR: {
+	char *dst, *dstEnd;
+
+	if (dstStart != srcStart) {
+	    memcpy(dstStart, srcStart, (size_t) dstLen);
+	}
+	dstEnd = dstStart + dstLen;
+	for (dst = dstStart; dst < dstEnd; dst++) {
+	    if (*dst == '\r') {
+		*dst = '\n';
 	    }
-	    srcLen = dstLen;
-	    break;
 	}
-	case TCL_TRANSLATE_CRLF: {
-	    char *dst;
-	    CONST char *src, *srcEnd, *srcMax;
-	    
-	    dst = dstStart;
-	    src = srcStart;
-	    srcEnd = srcStart + dstLen;
-	    srcMax = srcStart + *srcLenPtr;
-
-	    for ( ; src < srcEnd; ) {
-		if (*src == '\r') {
-		    src++;
-		    if (src >= srcMax) {
-			statePtr->flags |= INPUT_NEED_NL;
-		    } else if (*src == '\n') {
-			*dst++ = *src++;
-		    } else {
-			*dst++ = '\r';
-		    }
-		} else {
+	srcLen = dstLen;
+	break;
+    }
+    case TCL_TRANSLATE_CRLF: {
+	char *dst;
+	const char *src, *srcEnd, *srcMax;
+
+	dst = dstStart;
+	src = srcStart;
+	srcEnd = srcStart + dstLen;
+	srcMax = srcStart + *srcLenPtr;
+
+	for ( ; src < srcEnd; ) {
+	    if (*src == '\r') {
+		src++;
+		if (src >= srcMax) {
+		    SetFlag(statePtr, INPUT_NEED_NL);
+		} else if (*src == '\n') {
 		    *dst++ = *src++;
+		} else {
+		    *dst++ = '\r';
 		}
+	    } else {
+		*dst++ = *src++;
 	    }
-	    srcLen = src - srcStart;
-	    dstLen = dst - dstStart;
-	    break;
 	}
-	case TCL_TRANSLATE_AUTO: {
-	    char *dst;
-	    CONST char *src, *srcEnd, *srcMax;
+	srcLen = src - srcStart;
+	dstLen = dst - dstStart;
+	break;
+    }
+    case TCL_TRANSLATE_AUTO: {
+	char *dst;
+	const char *src, *srcEnd, *srcMax;
 
-	    dst = dstStart;
-	    src = srcStart;
-	    srcEnd = srcStart + dstLen;
-	    srcMax = srcStart + *srcLenPtr;
+	dst = dstStart;
+	src = srcStart;
+	srcEnd = srcStart + dstLen;
+	srcMax = srcStart + *srcLenPtr;
 
-	    if ((statePtr->flags & INPUT_SAW_CR) && (src < srcMax)) {
-		if (*src == '\n') {
-		    src++;
-		}
-		statePtr->flags &= ~INPUT_SAW_CR;
+	if ((statePtr->flags & INPUT_SAW_CR) && (src < srcMax)) {
+	    if (*src == '\n') {
+		src++;
 	    }
-	    for ( ; src < srcEnd; ) {
-		if (*src == '\r') {
-		    src++;
-		    if (src >= srcMax) {
-			statePtr->flags |= INPUT_SAW_CR;
-		    } else if (*src == '\n') {
-			if (srcEnd < srcMax) {
-			    srcEnd++;
-			}
-			src++;
+	    ResetFlag(statePtr, INPUT_SAW_CR);
+	}
+	for ( ; src < srcEnd; ) {
+	    if (*src == '\r') {
+		src++;
+		if (src >= srcMax) {
+		    SetFlag(statePtr, INPUT_SAW_CR);
+		} else if (*src == '\n') {
+		    if (srcEnd < srcMax) {
+			srcEnd++;
 		    }
-		    *dst++ = '\n';
-		} else {
-		    *dst++ = *src++;
+		    src++;
 		}
+		*dst++ = '\n';
+	    } else {
+		*dst++ = *src++;
 	    }
-	    srcLen = src - srcStart;
-	    dstLen = dst - dstStart;
-	    break;
-	}
-	default: {		/* lint. */
-	    return 0;
 	}
+	srcLen = src - srcStart;
+	dstLen = dst - dstStart;
+	break;
+    }
+    default:
+	return 0;
     }
     *dstLenPtr = dstLen;
 
     if ((eof != NULL) && (srcStart + srcLen >= eof)) {
 	/*
-	 * EOF character was seen in EOL translated range.  Leave current
-	 * file position pointing at the EOF character, but don't store the
-	 * EOF character in the output string.
+	 * EOF character was seen in EOL translated range. Leave current file
+	 * position pointing at the EOF character, but don't store the EOF
+	 * character in the output string.
 	 */
 
-	statePtr->flags |= (CHANNEL_EOF | CHANNEL_STICKY_EOF);
+	SetFlag(statePtr, CHANNEL_EOF | CHANNEL_STICKY_EOF);
 	statePtr->inputEncodingFlags |= TCL_ENCODING_END;
-	statePtr->flags &= ~(INPUT_SAW_CR | INPUT_NEED_NL);
+	ResetFlag(statePtr, INPUT_SAW_CR | INPUT_NEED_NL);
 	return 1;
     }
 
@@ -5301,8 +6020,8 @@ TranslateInputEOL(statePtr, dstStart, srcStart, dstLenPtr, srcLenPtr)
  *
  * Tcl_Ungets --
  *
- *	Causes the supplied string to be added to the input queue of
- *	the channel, at either the head or tail of the queue.
+ *	Causes the supplied string to be added to the input queue of the
+ *	channel, at either the head or tail of the queue.
  *
  * Results:
  *	The number of bytes stored in the channel, or -1 on error.
@@ -5314,17 +6033,17 @@ TranslateInputEOL(statePtr, dstStart, srcStart, dstLenPtr, srcLenPtr)
  */
 
 int
-Tcl_Ungets(chan, str, len, atEnd)
-    Tcl_Channel chan;		/* The channel for which to add the input. */
-    CONST char *str;		/* The input itself. */
-    int len;			/* The length of the input. */
-    int atEnd;			/* If non-zero, add at end of queue; otherwise
-                                 * add at head of queue. */    
+Tcl_Ungets(
+    Tcl_Channel chan,		/* The channel for which to add the input. */
+    const char *str,		/* The input itself. */
+    int len,			/* The length of the input. */
+    int atEnd)			/* If non-zero, add at end of queue; otherwise
+				 * add at head of queue. */
 {
     Channel *chanPtr;		/* The real IO channel. */
     ChannelState *statePtr;	/* State of actual channel. */
     ChannelBuffer *bufPtr;	/* Buffer to contain the data. */
-    int i, flags;
+    int flags;
 
     chanPtr = (Channel *) chan;
     statePtr = chanPtr->state;
@@ -5338,7 +6057,7 @@ Tcl_Ungets(chan, str, len, atEnd)
     /*
      * CheckChannelErrors clears too many flag bits in this one case.
      */
-     
+
     flags = statePtr->flags;
     if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
 	len = -1;
@@ -5347,42 +6066,40 @@ Tcl_Ungets(chan, str, len, atEnd)
     statePtr->flags = flags;
 
     /*
-     * If we have encountered a sticky EOF, just punt without storing.
-     * (sticky EOF is set if we have seen the input eofChar, to prevent
-     * reading beyond the eofChar). Otherwise, clear the EOF flags, and
-     * clear the BLOCKED bit. We want to discover these conditions anew
-     * in each operation.
+     * If we have encountered a sticky EOF, just punt without storing (sticky
+     * EOF is set if we have seen the input eofChar, to prevent reading beyond
+     * the eofChar). Otherwise, clear the EOF flags, and clear the BLOCKED
+     * bit. We want to discover these conditions anew in each operation.
      */
 
     if (statePtr->flags & CHANNEL_STICKY_EOF) {
 	goto done;
     }
-    statePtr->flags &= (~(CHANNEL_BLOCKED | CHANNEL_EOF));
+    ResetFlag(statePtr, CHANNEL_BLOCKED | CHANNEL_EOF);
 
     bufPtr = AllocChannelBuffer(len);
-    for (i = 0; i < len; i++) {
-        bufPtr->buf[bufPtr->nextAdded++] = str[i];
-    }
+    memcpy(InsertPoint(bufPtr), str, (size_t) len);
+    bufPtr->nextAdded += len;
 
-    if (statePtr->inQueueHead == (ChannelBuffer *) NULL) {
-        bufPtr->nextPtr = (ChannelBuffer *) NULL;
-        statePtr->inQueueHead = bufPtr;
-        statePtr->inQueueTail = bufPtr;
+    if (statePtr->inQueueHead == NULL) {
+	bufPtr->nextPtr = NULL;
+	statePtr->inQueueHead = bufPtr;
+	statePtr->inQueueTail = bufPtr;
     } else if (atEnd) {
-        bufPtr->nextPtr = (ChannelBuffer *) NULL;
-        statePtr->inQueueTail->nextPtr = bufPtr;
-        statePtr->inQueueTail = bufPtr;
+	bufPtr->nextPtr = NULL;
+	statePtr->inQueueTail->nextPtr = bufPtr;
+	statePtr->inQueueTail = bufPtr;
     } else {
-        bufPtr->nextPtr = statePtr->inQueueHead;
-        statePtr->inQueueHead = bufPtr;
+	bufPtr->nextPtr = statePtr->inQueueHead;
+	statePtr->inQueueHead = bufPtr;
     }
 
-    done:
     /*
-     * Update the notifier state so we don't block while there is still
-     * data in the buffers.
+     * Update the notifier state so we don't block while there is still data
+     * in the buffers.
      */
 
+  done:
     UpdateInterest(chanPtr);
     return len;
 }
@@ -5404,12 +6121,14 @@ Tcl_Ungets(chan, str, len, atEnd)
  */
 
 int
-Tcl_Flush(chan)
-    Tcl_Channel chan;			/* The Channel to flush. */
+Tcl_Flush(
+    Tcl_Channel chan)		/* The Channel to flush. */
 {
-    int result;				/* Of calling FlushChannel. */
-    Channel *chanPtr  = (Channel *) chan;	/* The actual channel. */
-    ChannelState *statePtr = chanPtr->state;	/* State of actual channel. */
+    int result;			/* Of calling FlushChannel. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The actual channel. */
+    ChannelState *statePtr = chanPtr->state;
+				/* State of actual channel. */
 
     /*
      * This operation should occur at the top of a channel stack.
@@ -5425,14 +6144,13 @@ Tcl_Flush(chan)
      * Force current output buffer to be output also.
      */
 
-    if ((statePtr->curOutPtr != NULL)
-	    && (statePtr->curOutPtr->nextAdded > 0)) {
-        statePtr->flags |= BUFFER_READY;
+    if ((statePtr->curOutPtr != NULL) && IsBufferReady(statePtr->curOutPtr)) {
+	SetFlag(statePtr, BUFFER_READY);
     }
-    
+
     result = FlushChannel(NULL, chanPtr, 0);
     if (result != 0) {
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     return TCL_OK;
@@ -5443,8 +6161,8 @@ Tcl_Flush(chan)
  *
  * DiscardInputQueued --
  *
- *	Discards any input read from the channel but not yet consumed
- *	by Tcl reading commands.
+ *	Discards any input read from the channel but not yet consumed by Tcl
+ *	reading commands.
  *
  * Results:
  *	None.
@@ -5457,32 +6175,31 @@ Tcl_Flush(chan)
  */
 
 static void
-DiscardInputQueued(statePtr, discardSavedBuffers)
-    ChannelState *statePtr;	/* Channel on which to discard
-                                 * the queued input. */
-    int discardSavedBuffers;	/* If non-zero, discard all buffers including
-                                 * last one. */
+DiscardInputQueued(
+    ChannelState *statePtr,	/* Channel on which to discard the queued
+				 * input. */
+    int discardSavedBuffers)	/* If non-zero, discard all buffers including
+				 * last one. */
 {
-    ChannelBuffer *bufPtr, *nxtPtr;	/* Loop variables. */
+    ChannelBuffer *bufPtr, *nxtPtr;
+				/* Loop variables. */
 
     bufPtr = statePtr->inQueueHead;
-    statePtr->inQueueHead = (ChannelBuffer *) NULL;
-    statePtr->inQueueTail = (ChannelBuffer *) NULL;
-    for (; bufPtr != (ChannelBuffer *) NULL; bufPtr = nxtPtr) {
-        nxtPtr = bufPtr->nextPtr;
-        RecycleBuffer(statePtr, bufPtr, discardSavedBuffers);
+    statePtr->inQueueHead = NULL;
+    statePtr->inQueueTail = NULL;
+    for (; bufPtr != NULL; bufPtr = nxtPtr) {
+	nxtPtr = bufPtr->nextPtr;
+	RecycleBuffer(statePtr, bufPtr, discardSavedBuffers);
     }
 
     /*
      * If discardSavedBuffers is nonzero, must also discard any previously
      * saved buffer in the saveInBufPtr field.
      */
-    
-    if (discardSavedBuffers) {
-        if (statePtr->saveInBufPtr != (ChannelBuffer *) NULL) {
-            ckfree((char *) statePtr->saveInBufPtr);
-            statePtr->saveInBufPtr = (ChannelBuffer *) NULL;
-        }
+
+    if (discardSavedBuffers && statePtr->saveInBufPtr != NULL) {
+	ckfree((char *) statePtr->saveInBufPtr);
+	statePtr->saveInBufPtr = NULL;
     }
 }
 
@@ -5491,11 +6208,11 @@ DiscardInputQueued(statePtr, discardSavedBuffers)
  *
  * GetInput --
  *
- *	Reads input data from a device into a channel buffer.  
+ *	Reads input data from a device into a channel buffer.
  *
  * Results:
  *	The return value is the Posix error code if an error occurred while
- *	reading from the file, or 0 otherwise.  
+ *	reading from the file, or 0 otherwise.
  *
  * Side effects:
  *	Reads from the underlying device.
@@ -5504,14 +6221,15 @@ DiscardInputQueued(statePtr, discardSavedBuffers)
  */
 
 static int
-GetInput(chanPtr)
-    Channel *chanPtr;		/* Channel to read input from. */
+GetInput(
+    Channel *chanPtr)		/* Channel to read input from. */
 {
     int toRead;			/* How much to read? */
     int result;			/* Of calling driver. */
     int nread;			/* How much was read from channel? */
     ChannelBuffer *bufPtr;	/* New buffer to add to input queue. */
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
 
     /*
      * Prevent reading from a dead channel -- a channel that has been closed
@@ -5519,90 +6237,91 @@ GetInput(chanPtr)
      * channel cleanup has run but the channel is still registered in some
      * interpreter.
      */
-    
+
     if (CheckForDeadChannel(NULL, statePtr)) {
 	return EINVAL;
     }
 
     /*
-     * First check for more buffers in the pushback area of the
-     * topmost channel in the stack and use them. They can be the
-     * result of a transformation which went away without reading all
-     * the information placed in the area when it was stacked.
+     * First check for more buffers in the pushback area of the topmost
+     * channel in the stack and use them. They can be the result of a
+     * transformation which went away without reading all the information
+     * placed in the area when it was stacked.
      *
-     * Two possibilities for the state: No buffers in it, or a single
-     * empty buffer. In the latter case we can recycle it now.
+     * Two possibilities for the state: No buffers in it, or a single empty
+     * buffer. In the latter case we can recycle it now.
      */
 
-    if (chanPtr->inQueueHead != (ChannelBuffer*) NULL) {
-        if (statePtr->inQueueHead != (ChannelBuffer*) NULL) {
+    if (chanPtr->inQueueHead != NULL) {
+	if (statePtr->inQueueHead != NULL) {
 	    RecycleBuffer(statePtr, statePtr->inQueueHead, 0);
-	    statePtr->inQueueHead = (ChannelBuffer*) NULL;
+	    statePtr->inQueueHead = NULL;
 	}
 
 	statePtr->inQueueHead = chanPtr->inQueueHead;
 	statePtr->inQueueTail = chanPtr->inQueueTail;
-	chanPtr->inQueueHead  = (ChannelBuffer*) NULL;
-	chanPtr->inQueueTail  = (ChannelBuffer*) NULL;
+	chanPtr->inQueueHead = NULL;
+	chanPtr->inQueueTail = NULL;
 	return 0;
     }
 
     /*
-     * Nothing in the pushback area, fall back to the usual handling
-     * (driver, etc.)
+     * Nothing in the pushback area, fall back to the usual handling (driver,
+     * etc.)
      */
 
     /*
-     * See if we can fill an existing buffer. If we can, read only
-     * as much as will fit in it. Otherwise allocate a new buffer,
-     * add it to the input queue and attempt to fill it to the max.
+     * See if we can fill an existing buffer. If we can, read only as much as
+     * will fit in it. Otherwise allocate a new buffer, add it to the input
+     * queue and attempt to fill it to the max.
      */
 
     bufPtr = statePtr->inQueueTail;
-    if ((bufPtr != NULL) && (bufPtr->nextAdded < bufPtr->bufLength)) {
-        toRead = bufPtr->bufLength - bufPtr->nextAdded;
+    if ((bufPtr != NULL) && !IsBufferFull(bufPtr)) {
+	toRead = SpaceLeft(bufPtr);
     } else {
 	bufPtr = statePtr->saveInBufPtr;
 	statePtr->saveInBufPtr = NULL;
 
 	/*
-	 * Check the actual buffersize against the requested
-	 * buffersize. Buffers which are smaller than requested are
-	 * squashed. This is done to honor dynamic changes of the
-	 * buffersize made by the user.
+	 * Check the actual buffersize against the requested buffersize.
+	 * Buffers which are smaller than requested are squashed. This is done
+	 * to honor dynamic changes of the buffersize made by the user.
 	 */
 
-	if ((bufPtr != NULL) && ((bufPtr->bufLength - BUFFER_PADDING) < statePtr->bufSize)) {
-	  ckfree((char *) bufPtr);
-	  bufPtr = NULL;
+	if ((bufPtr != NULL)
+		&& (bufPtr->bufLength - BUFFER_PADDING < statePtr->bufSize)) {
+	    ckfree((char *) bufPtr);
+	    bufPtr = NULL;
 	}
 
 	if (bufPtr == NULL) {
 	    bufPtr = AllocChannelBuffer(statePtr->bufSize);
 	}
-        bufPtr->nextPtr = (ChannelBuffer *) NULL;
+	bufPtr->nextPtr = NULL;
 
-	/* SF #427196: Use the actual size of the buffer to determine
-	 * the number of bytes to read from the channel and not the
-	 * size for new buffers. They can be different if the
-	 * buffersize was changed between reads.
+	/*
+	 * SF #427196: Use the actual size of the buffer to determine the
+	 * number of bytes to read from the channel and not the size for new
+	 * buffers. They can be different if the buffersize was changed
+	 * between reads.
 	 *
-	 * Note: This affects performance negatively if the buffersize
-	 * was extended but this small buffer is reused for all
-	 * subsequent reads. The system never uses buffers with the
-	 * requested bigger size in that case. An adjunct patch could
-	 * try and delete all unused buffers it encounters and which
-	 * are smaller than the formally requested buffersize.
+	 * Note: This affects performance negatively if the buffersize was
+	 * extended but this small buffer is reused for all subsequent reads.
+	 * The system never uses buffers with the requested bigger size in
+	 * that case. An adjunct patch could try and delete all unused buffers
+	 * it encounters and which are smaller than the formally requested
+	 * buffersize.
 	 */
 
-	toRead = bufPtr->bufLength - bufPtr->nextAdded;
+	toRead = SpaceLeft(bufPtr);
 
-        if (statePtr->inQueueTail == NULL) {
-            statePtr->inQueueHead = bufPtr;
-        } else {
-            statePtr->inQueueTail->nextPtr = bufPtr;
-        }
-        statePtr->inQueueTail = bufPtr;
+	if (statePtr->inQueueTail == NULL) {
+	    statePtr->inQueueHead = bufPtr;
+	} else {
+	    statePtr->inQueueTail->nextPtr = bufPtr;
+	}
+	statePtr->inQueueTail = bufPtr;
     }
 
     /*
@@ -5615,24 +6334,27 @@ GetInput(chanPtr)
     }
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-    /* [SF Tcl Bug 943274]. Better emulation of non-blocking channels
-     * for channels without BlockModeProc, by keeping track of true
-     * fileevents generated by the OS == Data waiting and reading if
-     * and only if we are sure to have data.
+    /*
+     * [SF Tcl Bug 943274]. Better emulation of non-blocking channels for
+     * channels without BlockModeProc, by keeping track of true fileevents
+     * generated by the OS == Data waiting and reading if and only if we are
+     * sure to have data.
      */
 
     if ((statePtr->flags & CHANNEL_NONBLOCKING) &&
-	(Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL) &&
-	!(statePtr->flags & CHANNEL_HAS_MORE_DATA)) {
+	    (Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL) &&
+	    !(statePtr->flags & CHANNEL_HAS_MORE_DATA)) {
+	/*
+	 * Bypass the driver, it would block, as no data is available
+	 */
 
-        /* Bypass the driver, it would block, as no data is available */
-        nread = -1;
-        result = EWOULDBLOCK;
+	nread = -1;
+	result = EWOULDBLOCK;
     } else {
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
 
-        nread = (chanPtr->typePtr->inputProc)(chanPtr->instanceData,
-		    bufPtr->buf + bufPtr->nextAdded, toRead, &result);
+	nread = (chanPtr->typePtr->inputProc)(chanPtr->instanceData,
+		InsertPoint(bufPtr), toRead, &result);
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
     }
@@ -5642,30 +6364,33 @@ GetInput(chanPtr)
 	bufPtr->nextAdded += nread;
 
 	/*
-	 * If we get a short read, signal up that we may be BLOCKED. We
-	 * should avoid calling the driver because on some platforms we
-	 * will block in the low level reading code even though the
-	 * channel is set into nonblocking mode.
+	 * If we get a short read, signal up that we may be BLOCKED. We should
+	 * avoid calling the driver because on some platforms we will block in
+	 * the low level reading code even though the channel is set into
+	 * nonblocking mode.
 	 */
-            
+
 	if (nread < toRead) {
-	    statePtr->flags |= CHANNEL_BLOCKED;
+	    SetFlag(statePtr, CHANNEL_BLOCKED);
 	}
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
 	if (nread <= toRead) {
-	  /* [SF Tcl Bug 943274] We have read the available data,
-	   * clear flag */
-	  statePtr->flags &= ~CHANNEL_HAS_MORE_DATA;
+	    /*
+	     * [SF Tcl Bug 943274] We have read the available data, clear
+	     * flag.
+	     */
+
+	    ResetFlag(statePtr, CHANNEL_HAS_MORE_DATA);
 	}
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
 
     } else if (nread == 0) {
-	statePtr->flags |= CHANNEL_EOF;
+	SetFlag(statePtr, CHANNEL_EOF);
 	statePtr->inputEncodingFlags |= TCL_ENCODING_END;
     } else if (nread < 0) {
 	if ((result == EWOULDBLOCK) || (result == EAGAIN)) {
-	    statePtr->flags |= CHANNEL_BLOCKED;
+	    SetFlag(statePtr, CHANNEL_BLOCKED);
 	    result = EAGAIN;
 	}
 	Tcl_SetErrno(result);
@@ -5679,12 +6404,12 @@ GetInput(chanPtr)
  *
  * Tcl_Seek --
  *
- *	Implements seeking on Tcl Channels. This is a public function
- *	so that other C facilities may be implemented on top of it.
+ *	Implements seeking on Tcl Channels. This is a public function so that
+ *	other C facilities may be implemented on top of it.
  *
  * Results:
- *	The new access point or -1 on error. If error, use Tcl_GetErrno()
- *	to retrieve the POSIX error code for the error that occurred.
+ *	The new access point or -1 on error. If error, use Tcl_GetErrno() to
+ *	retrieve the POSIX error code for the error that occurred.
  *
  * Side effects:
  *	May flush output on the channel. May discard queued input.
@@ -5693,30 +6418,32 @@ GetInput(chanPtr)
  */
 
 Tcl_WideInt
-Tcl_Seek(chan, offset, mode)
-    Tcl_Channel chan;		/* The channel on which to seek. */
-    Tcl_WideInt offset;		/* Offset to seek to. */
-    int mode;			/* Relative to which location to seek? */
+Tcl_Seek(
+    Tcl_Channel chan,		/* The channel on which to seek. */
+    Tcl_WideInt offset,		/* Offset to seek to. */
+    int mode)			/* Relative to which location to seek? */
 {
-    Channel *chanPtr = (Channel *) chan;	/* The real IO channel. */
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    Channel *chanPtr = (Channel *) chan;
+				/* The real IO channel. */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     int inputBuffered, outputBuffered;
 				/* # bytes held in buffers. */
     int result;			/* Of device driver operations. */
     Tcl_WideInt curPos;		/* Position on the device. */
-    int wasAsync;		/* Was the channel nonblocking before the
-                                 * seek operation? If so, must restore to
-                                 * nonblocking mode after the seek. */
+    int wasAsync;		/* Was the channel nonblocking before the seek
+				 * operation? If so, must restore to
+				 * non-blocking mode after the seek. */
 
     if (CheckChannelErrors(statePtr, TCL_WRITABLE | TCL_READABLE) != 0) {
 	return Tcl_LongAsWide(-1);
     }
 
     /*
-     * Disallow seek on dead channels -- channels that have been closed but
-     * not yet been deallocated. Such channels can be found if the exit
-     * handler for channel cleanup has run but the channel is still
-     * registered in an interpreter.
+     * Disallow seek on dead channels - channels that have been closed but not
+     * yet been deallocated. Such channels can be found if the exit handler
+     * for channel cleanup has run but the channel is still registered in an
+     * interpreter.
      */
 
     if (CheckForDeadChannel(NULL, statePtr)) {
@@ -5734,22 +6461,22 @@ Tcl_Seek(chan, offset, mode)
      * defined. This means that the channel does not support seeking.
      */
 
-    if (chanPtr->typePtr->seekProc == (Tcl_DriverSeekProc *) NULL) {
-        Tcl_SetErrno(EINVAL);
-        return Tcl_LongAsWide(-1);
+    if (chanPtr->typePtr->seekProc == NULL) {
+	Tcl_SetErrno(EINVAL);
+	return Tcl_LongAsWide(-1);
     }
 
     /*
-     * Compute how much input and output is buffered. If both input and
-     * output is buffered, cannot compute the current position.
+     * Compute how much input and output is buffered. If both input and output
+     * is buffered, cannot compute the current position.
      */
 
     inputBuffered = Tcl_InputBuffered(chan);
     outputBuffered = Tcl_OutputBuffered(chan);
 
     if ((inputBuffered != 0) && (outputBuffered != 0)) {
-        Tcl_SetErrno(EFAULT);
-        return Tcl_LongAsWide(-1);
+	Tcl_SetErrno(EFAULT);
+	return Tcl_LongAsWide(-1);
     }
 
     /*
@@ -5758,61 +6485,69 @@ Tcl_Seek(chan, offset, mode)
      */
 
     if (mode == SEEK_CUR) {
-        offset -= inputBuffered;
+	offset -= inputBuffered;
     }
 
     /*
-     * Discard any queued input - this input should not be read after
-     * the seek.
+     * Discard any queued input - this input should not be read after the
+     * seek.
      */
 
     DiscardInputQueued(statePtr, 0);
 
     /*
-     * Reset EOF and BLOCKED flags. We invalidate them by moving the
-     * access point. Also clear CR related flags.
+     * Reset EOF and BLOCKED flags. We invalidate them by moving the access
+     * point. Also clear CR related flags.
      */
 
     statePtr->flags &=
-        (~(CHANNEL_EOF | CHANNEL_STICKY_EOF | CHANNEL_BLOCKED | INPUT_SAW_CR));
-    
+	~(CHANNEL_EOF | CHANNEL_STICKY_EOF | CHANNEL_BLOCKED | INPUT_SAW_CR);
+
     /*
-     * If the channel is in asynchronous output mode, switch it back
-     * to synchronous mode and cancel any async flush that may be
-     * scheduled. After the flush, the channel will be put back into
-     * asynchronous output mode.
+     * If the channel is in asynchronous output mode, switch it back to
+     * synchronous mode and cancel any async flush that may be scheduled.
+     * After the flush, the channel will be put back into asynchronous output
+     * mode.
      */
 
     wasAsync = 0;
     if (statePtr->flags & CHANNEL_NONBLOCKING) {
-        wasAsync = 1;
-        result = StackSetBlockMode(chanPtr, TCL_MODE_BLOCKING);
+	wasAsync = 1;
+	result = StackSetBlockMode(chanPtr, TCL_MODE_BLOCKING);
 	if (result != 0) {
 	    return Tcl_LongAsWide(-1);
 	}
-        statePtr->flags &= (~(CHANNEL_NONBLOCKING));
-        if (statePtr->flags & BG_FLUSH_SCHEDULED) {
-            statePtr->flags &= (~(BG_FLUSH_SCHEDULED));
-        }
+	ResetFlag(statePtr, CHANNEL_NONBLOCKING);
+	if (statePtr->flags & BG_FLUSH_SCHEDULED) {
+	    ResetFlag(statePtr, BG_FLUSH_SCHEDULED);
+	}
     }
-    
+
     /*
-     * If the flush fails we cannot recover the original position. In
-     * that case the seek is not attempted because we do not know where
-     * the access position is - instead we return the error. FlushChannel
-     * has already called Tcl_SetErrno() to report the error upwards.
-     * If the flush succeeds we do the seek also.
+     * If there is data buffered in statePtr->curOutPtr then mark the channel
+     * as ready to flush before invoking FlushChannel.
      */
-    
+
+    if ((statePtr->curOutPtr != NULL) && IsBufferReady(statePtr->curOutPtr)) {
+	SetFlag(statePtr, BUFFER_READY);
+    }
+
+    /*
+     * If the flush fails we cannot recover the original position. In that
+     * case the seek is not attempted because we do not know where the access
+     * position is - instead we return the error. FlushChannel has already
+     * called Tcl_SetErrno() to report the error upwards. If the flush
+     * succeeds we do the seek also.
+     */
+
     if (FlushChannel(NULL, chanPtr, 0) != 0) {
-        curPos = -1;
+	curPos = -1;
     } else {
-
-        /*
-         * Now seek to the new position in the channel as requested by the
-         * caller.  Note that we prefer the wideSeekProc if that is
-	 * available and non-NULL...
-         */
+	/*
+	 * Now seek to the new position in the channel as requested by the
+	 * caller. Note that we prefer the wideSeekProc if that is available
+	 * and non-NULL...
+	 */
 
 	if (HaveVersion(chanPtr->typePtr, TCL_CHANNEL_VERSION_3) &&
 		chanPtr->typePtr->wideSeekProc != NULL) {
@@ -5831,17 +6566,17 @@ Tcl_Seek(chan, offset, mode)
 	    Tcl_SetErrno(result);
 	}
     }
-    
+
     /*
      * Restore to nonblocking mode if that was the previous behavior.
      *
-     * NOTE: Even if there was an async flush active we do not restore
-     * it now because we already flushed all the queued output, above.
+     * NOTE: Even if there was an async flush active we do not restore it now
+     * because we already flushed all the queued output, above.
      */
-    
+
     if (wasAsync) {
-        statePtr->flags |= CHANNEL_NONBLOCKING;
-        result = StackSetBlockMode(chanPtr, TCL_MODE_NONBLOCKING);
+	SetFlag(statePtr, CHANNEL_NONBLOCKING);
+	result = StackSetBlockMode(chanPtr, TCL_MODE_NONBLOCKING);
 	if (result != 0) {
 	    return Tcl_LongAsWide(-1);
 	}
@@ -5855,13 +6590,13 @@ Tcl_Seek(chan, offset, mode)
  *
  * Tcl_Tell --
  *
- *	Returns the position of the next character to be read/written on
- *	this channel.
+ *	Returns the position of the next character to be read/written on this
+ *	channel.
  *
  * Results:
- *	A nonnegative integer on success, -1 on failure. If failed,
- *	use Tcl_GetErrno() to retrieve the POSIX error code for the
- *	error that occurred.
+ *	A nonnegative integer on success, -1 on failure. If failed, use
+ *	Tcl_GetErrno() to retrieve the POSIX error code for the error that
+ *	occurred.
  *
  * Side effects:
  *	None.
@@ -5870,14 +6605,17 @@ Tcl_Seek(chan, offset, mode)
  */
 
 Tcl_WideInt
-Tcl_Tell(chan)
-    Tcl_Channel chan;			/* The channel to return pos for. */
+Tcl_Tell(
+    Tcl_Channel chan)		/* The channel to return pos for. */
 {
-    Channel *chanPtr = (Channel *) chan;	/* The real IO channel. */
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
-    int inputBuffered, outputBuffered;	/* # bytes held in buffers. */
-    int result;				/* Of calling device driver. */
-    Tcl_WideInt curPos;			/* Position on device. */
+    Channel *chanPtr = (Channel *) chan;
+				/* The real IO channel. */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+    int inputBuffered, outputBuffered;
+				/* # bytes held in buffers. */
+    int result;			/* Of calling device driver. */
+    Tcl_WideInt curPos;		/* Position on device. */
 
     if (CheckChannelErrors(statePtr, TCL_WRITABLE | TCL_READABLE) != 0) {
 	return Tcl_LongAsWide(-1);
@@ -5886,8 +6624,8 @@ Tcl_Tell(chan)
     /*
      * Disallow tell on dead channels -- channels that have been closed but
      * not yet been deallocated. Such channels can be found if the exit
-     * handler for channel cleanup has run but the channel is still
-     * registered in an interpreter.
+     * handler for channel cleanup has run but the channel is still registered
+     * in an interpreter.
      */
 
     if (CheckForDeadChannel(NULL, statePtr)) {
@@ -5905,28 +6643,28 @@ Tcl_Tell(chan)
      * defined. This means that the channel does not support seeking.
      */
 
-    if (chanPtr->typePtr->seekProc == (Tcl_DriverSeekProc *) NULL) {
-        Tcl_SetErrno(EINVAL);
-        return Tcl_LongAsWide(-1);
+    if (chanPtr->typePtr->seekProc == NULL) {
+	Tcl_SetErrno(EINVAL);
+	return Tcl_LongAsWide(-1);
     }
 
     /*
-     * Compute how much input and output is buffered. If both input and
-     * output is buffered, cannot compute the current position.
+     * Compute how much input and output is buffered. If both input and output
+     * is buffered, cannot compute the current position.
      */
 
     inputBuffered = Tcl_InputBuffered(chan);
     outputBuffered = Tcl_OutputBuffered(chan);
 
     if ((inputBuffered != 0) && (outputBuffered != 0)) {
-        Tcl_SetErrno(EFAULT);
-        return Tcl_LongAsWide(-1);
+	Tcl_SetErrno(EFAULT);
+	return Tcl_LongAsWide(-1);
     }
 
     /*
-     * Get the current position in the device and compute the position
-     * where the next character will be read or written.  Note that we
-     * prefer the wideSeekProc if that is available and non-NULL...
+     * Get the current position in the device and compute the position where
+     * the next character will be read or written. Note that we prefer the
+     * wideSeekProc if that is available and non-NULL...
      */
 
     if (HaveVersion(chanPtr->typePtr, TCL_CHANNEL_VERSION_3) &&
@@ -5938,11 +6676,11 @@ Tcl_Tell(chan)
 		chanPtr->instanceData, 0, SEEK_CUR, &result));
     }
     if (curPos == Tcl_LongAsWide(-1)) {
-        Tcl_SetErrno(result);
-        return Tcl_LongAsWide(-1);
+	Tcl_SetErrno(result);
+	return Tcl_LongAsWide(-1);
     }
     if (inputBuffered != 0) {
-        return curPos - inputBuffered;
+	return curPos - inputBuffered;
     }
     return curPos + outputBuffered;
 }
@@ -5952,9 +6690,9 @@ Tcl_Tell(chan)
  *
  * Tcl_SeekOld, Tcl_TellOld --
  *
- *	Backward-compatability versions of the seek/tell interface that
- *	do not support 64-bit offsets.  This interface is not documented
- *	or expected to be supported indefinitely.
+ *	Backward-compatability versions of the seek/tell interface that do not
+ *	support 64-bit offsets. This interface is not documented or expected
+ *	to be supported indefinitely.
  *
  * Results:
  *	As for Tcl_Seek and Tcl_Tell respectively, except truncated to
@@ -5967,10 +6705,10 @@ Tcl_Tell(chan)
  */
 
 int
-Tcl_SeekOld(chan, offset, mode)
-    Tcl_Channel chan;		/* The channel on which to seek. */
-    int offset;			/* Offset to seek to. */
-    int mode;			/* Relative to which location to seek? */
+Tcl_SeekOld(
+    Tcl_Channel chan,		/* The channel on which to seek. */
+    int offset,			/* Offset to seek to. */
+    int mode)			/* Relative to which location to seek? */
 {
     Tcl_WideInt wOffset, wResult;
 
@@ -5980,8 +6718,8 @@ Tcl_SeekOld(chan, offset, mode)
 }
 
 int
-Tcl_TellOld(chan)
-    Tcl_Channel chan;		/* The channel to return pos for. */
+Tcl_TellOld(
+    Tcl_Channel chan)		/* The channel to return pos for. */
 {
     Tcl_WideInt wResult;
 
@@ -5992,28 +6730,98 @@ Tcl_TellOld(chan)
 /*
  *---------------------------------------------------------------------------
  *
+ * Tcl_TruncateChannel --
+ *
+ *	Truncate a channel to the given length.
+ *
+ * Results:
+ *	TCL_OK on success, TCL_ERROR if the operation failed (e.g. is not
+ *	supported by the type of channel, or the underlying OS operation
+ *	failed in some way).
+ *
+ * Side effects:
+ *	Seeks the channel to the current location. Sets errno on OS error.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+Tcl_TruncateChannel(
+    Tcl_Channel chan,		/* Channel to truncate. */
+    Tcl_WideInt length)		/* Length to truncate it to. */
+{
+    Channel *chanPtr = (Channel *) chan;
+    Tcl_DriverTruncateProc *truncateProc =
+	    Tcl_ChannelTruncateProc(chanPtr->typePtr);
+    int result;
+
+    if (truncateProc == NULL) {
+	/*
+	 * Feature not supported and it's not emulatable. Pretend it's
+	 * returned an EINVAL, a very generic error!
+	 */
+
+	Tcl_SetErrno(EINVAL);
+	return TCL_ERROR;
+    }
+
+    if (!(chanPtr->state->flags & TCL_WRITABLE)) {
+	/*
+	 * We require that the file was opened of writing. Do that check now
+	 * so that we only flush if we think we're going to succeed.
+	 */
+
+	Tcl_SetErrno(EINVAL);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Seek first to force a total flush of all pending buffers and ditch any
+     * pre-read input data.
+     */
+
+    if (Tcl_Seek(chan, (Tcl_WideInt)0, SEEK_CUR) == Tcl_LongAsWide(-1)) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * We're all flushed to disk now and we also don't have any unfortunate
+     * input baggage around either; can truncate with impunity.
+     */
+
+    result = truncateProc(chanPtr->instanceData, length);
+    if (result != 0) {
+	Tcl_SetErrno(result);
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
  * CheckChannelErrors --
  *
- *	See if the channel is in an ready state and can perform the
- *	desired operation.
+ *	See if the channel is in an ready state and can perform the desired
+ *	operation.
  *
  * Results:
- *	The return value is 0 if the channel is OK, otherwise the
- *	return value is -1 and errno is set to indicate the error.
+ *	The return value is 0 if the channel is OK, otherwise the return value
+ *	is -1 and errno is set to indicate the error.
  *
  * Side effects:
  *	May clear the EOF and/or BLOCKED bits if reading from channel.
  *
  *---------------------------------------------------------------------------
  */
- 
+
 static int
-CheckChannelErrors(statePtr, flags)
-    ChannelState *statePtr;	/* Channel to check. */
-    int flags;			/* Test if channel supports desired operation:
-				 * TCL_READABLE, TCL_WRITABLE.  Also indicates
+CheckChannelErrors(
+    ChannelState *statePtr,	/* Channel to check. */
+    int flags)			/* Test if channel supports desired operation:
+				 * TCL_READABLE, TCL_WRITABLE. Also indicates
 				 * Raw read or write for special close
-				 * processing*/
+				 * processing */
 {
     int direction = flags & (TCL_READABLE|TCL_WRITABLE);
 
@@ -6022,20 +6830,31 @@ CheckChannelErrors(statePtr, flags)
      */
 
     if (statePtr->unreportedError != 0) {
-        Tcl_SetErrno(statePtr->unreportedError);
-        statePtr->unreportedError = 0;
-        return -1;
+	Tcl_SetErrno(statePtr->unreportedError);
+	statePtr->unreportedError = 0;
+
+	/*
+	 * TIP #219, Tcl Channel Reflection API.
+	 * Move a defered error message back into the channel bypass.
+	 */
+
+	if (statePtr->chanMsg != NULL) {
+	    TclDecrRefCount(statePtr->chanMsg);
+	}
+	statePtr->chanMsg = statePtr->unreportedMsg;
+	statePtr->unreportedMsg = NULL;
+	return -1;
     }
 
     /*
-     * Only the raw read and write operations are allowed during close
-     * in order to drain data from stacked channels.
+     * Only the raw read and write operations are allowed during close in
+     * order to drain data from stacked channels.
      */
 
     if ((statePtr->flags & CHANNEL_CLOSED) &&
 	    ((flags & CHANNEL_RAW_MODE) == 0)) {
-        Tcl_SetErrno(EACCES);
-        return -1;
+	Tcl_SetErrno(EACCES);
+	return -1;
     }
 
     /*
@@ -6043,8 +6862,8 @@ CheckChannelErrors(statePtr, flags)
      */
 
     if ((statePtr->flags & direction) == 0) {
-        Tcl_SetErrno(EACCES);
-        return -1;
+	Tcl_SetErrno(EACCES);
+	return -1;
     }
 
     /*
@@ -6062,16 +6881,16 @@ CheckChannelErrors(statePtr, flags)
 
     if (direction == TCL_READABLE) {
 	/*
-	 * If we have not encountered a sticky EOF, clear the EOF bit
-	 * (sticky EOF is set if we have seen the input eofChar, to prevent
-	 * reading beyond the eofChar). Also, always clear the BLOCKED bit.
-	 * We want to discover these conditions anew in each operation.
+	 * If we have not encountered a sticky EOF, clear the EOF bit (sticky
+	 * EOF is set if we have seen the input eofChar, to prevent reading
+	 * beyond the eofChar). Also, always clear the BLOCKED bit. We want to
+	 * discover these conditions anew in each operation.
 	 */
 
 	if ((statePtr->flags & CHANNEL_STICKY_EOF) == 0) {
-	    statePtr->flags &= ~CHANNEL_EOF;
+	    ResetFlag(statePtr, CHANNEL_EOF);
 	}
-	statePtr->flags &= ~(CHANNEL_BLOCKED | CHANNEL_NEED_MORE_DATA);
+	ResetFlag(statePtr, CHANNEL_BLOCKED | CHANNEL_NEED_MORE_DATA);
     }
 
     return 0;
@@ -6094,15 +6913,15 @@ CheckChannelErrors(statePtr, flags)
  */
 
 int
-Tcl_Eof(chan)
-    Tcl_Channel chan;			/* Does this channel have EOF? */
+Tcl_Eof(
+    Tcl_Channel chan)		/* Does this channel have EOF? */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* State of real channel structure. */
+				/* State of real channel structure. */
 
     return ((statePtr->flags & CHANNEL_STICKY_EOF) ||
-            ((statePtr->flags & CHANNEL_EOF) &&
-		    (Tcl_InputBuffered(chan) == 0))) ? 1 : 0;
+	    ((statePtr->flags & CHANNEL_EOF) &&
+	    (Tcl_InputBuffered(chan) == 0))) ? 1 : 0;
 }
 
 /*
@@ -6122,11 +6941,11 @@ Tcl_Eof(chan)
  */
 
 int
-Tcl_InputBlocked(chan)
-    Tcl_Channel chan;			/* Is this channel blocked? */
+Tcl_InputBlocked(
+    Tcl_Channel chan)		/* Is this channel blocked? */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* State of real channel structure. */
+				/* State of real channel structure. */
 
     return (statePtr->flags & CHANNEL_BLOCKED) ? 1 : 0;
 }
@@ -6136,12 +6955,12 @@ Tcl_InputBlocked(chan)
  *
  * Tcl_InputBuffered --
  *
- *	Returns the number of bytes of input currently buffered in the
- *	common internal buffer of a channel.
+ *	Returns the number of bytes of input currently buffered in the common
+ *	internal buffer of a channel.
  *
  * Results:
- *	The number of input bytes buffered, or zero if the channel is not
- *	open for reading.
+ *	The number of input bytes buffered, or zero if the channel is not open
+ *	for reading.
  *
  * Side effects:
  *	None.
@@ -6150,28 +6969,26 @@ Tcl_InputBlocked(chan)
  */
 
 int
-Tcl_InputBuffered(chan)
-    Tcl_Channel chan;			/* The channel to query. */
+Tcl_InputBuffered(
+    Tcl_Channel chan)		/* The channel to query. */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* State of real channel structure. */
+				/* State of real channel structure. */
     ChannelBuffer *bufPtr;
     int bytesBuffered;
 
-    for (bytesBuffered = 0, bufPtr = statePtr->inQueueHead;
-	 bufPtr != (ChannelBuffer *) NULL;
-	 bufPtr = bufPtr->nextPtr) {
-        bytesBuffered += (bufPtr->nextAdded - bufPtr->nextRemoved);
+    for (bytesBuffered = 0, bufPtr = statePtr->inQueueHead; bufPtr != NULL;
+	    bufPtr = bufPtr->nextPtr) {
+	bytesBuffered += BytesLeft(bufPtr);
     }
 
     /*
      * Don't forget the bytes in the topmost pushback area.
      */
 
-    for (bufPtr = statePtr->topChanPtr->inQueueHead;
-	 bufPtr != (ChannelBuffer *) NULL;
-	 bufPtr = bufPtr->nextPtr) {
-        bytesBuffered += (bufPtr->nextAdded - bufPtr->nextRemoved);
+    for (bufPtr = statePtr->topChanPtr->inQueueHead; bufPtr != NULL;
+	    bufPtr = bufPtr->nextPtr) {
+	bytesBuffered += BytesLeft(bufPtr);
     }
 
     return bytesBuffered;
@@ -6182,12 +6999,12 @@ Tcl_InputBuffered(chan)
  *
  * Tcl_OutputBuffered --
  *
- *    Returns the number of bytes of output currently buffered in the
- *    common internal buffer of a channel.
+ *    Returns the number of bytes of output currently buffered in the common
+ *    internal buffer of a channel.
  *
  * Results:
- *    The number of output bytes buffered, or zero if the channel is not
- *    open for writing.
+ *    The number of output bytes buffered, or zero if the channel is not open
+ *    for writing.
  *
  * Side effects:
  *    None.
@@ -6196,24 +7013,24 @@ Tcl_InputBuffered(chan)
  */
 
 int
-Tcl_OutputBuffered(chan)
-    Tcl_Channel chan;                 /* The channel to query. */
+Tcl_OutputBuffered(
+    Tcl_Channel chan)		/* The channel to query. */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-                                      /* State of real channel structure. */
+				/* State of real channel structure. */
     ChannelBuffer *bufPtr;
     int bytesBuffered;
 
-    for (bytesBuffered = 0, bufPtr = statePtr->outQueueHead;
-	bufPtr != (ChannelBuffer *) NULL;
-	bufPtr = bufPtr->nextPtr) {
-	bytesBuffered += (bufPtr->nextAdded - bufPtr->nextRemoved);
+    for (bytesBuffered = 0, bufPtr = statePtr->outQueueHead; bufPtr != NULL;
+	    bufPtr = bufPtr->nextPtr) {
+	bytesBuffered += BytesLeft(bufPtr);
     }
-    if ((statePtr->curOutPtr != (ChannelBuffer *) NULL) &&
-	(statePtr->curOutPtr->nextAdded > statePtr->curOutPtr->nextRemoved)) {
-	statePtr->flags |= BUFFER_READY;
-	bytesBuffered +=
-	    (statePtr->curOutPtr->nextAdded - statePtr->curOutPtr->nextRemoved);
+    if (statePtr->curOutPtr != NULL) {
+	register ChannelBuffer *curOutPtr = statePtr->curOutPtr;
+
+	if (IsBufferReady(curOutPtr)) {
+	    bytesBuffered += BytesLeft(curOutPtr);
+	}
     }
 
     return bytesBuffered;
@@ -6228,8 +7045,8 @@ Tcl_OutputBuffered(chan)
  *	internal buffer (push back area) of a channel.
  *
  * Results:
- *	The number of input bytes buffered, or zero if the channel is not
- *	open for reading.
+ *	The number of input bytes buffered, or zero if the channel is not open
+ *	for reading.
  *
  * Side effects:
  *	None.
@@ -6238,18 +7055,17 @@ Tcl_OutputBuffered(chan)
  */
 
 int
-Tcl_ChannelBuffered(chan)
-    Tcl_Channel chan;			/* The channel to query. */
+Tcl_ChannelBuffered(
+    Tcl_Channel chan)		/* The channel to query. */
 {
     Channel *chanPtr = (Channel *) chan;
-					/* real channel structure. */
+				/* Real channel structure. */
     ChannelBuffer *bufPtr;
-    int bytesBuffered;
+    int bytesBuffered = 0;
 
-    for (bytesBuffered = 0, bufPtr = chanPtr->inQueueHead;
-	 bufPtr != (ChannelBuffer *) NULL;
-	 bufPtr = bufPtr->nextPtr) {
-        bytesBuffered += (bufPtr->nextAdded - bufPtr->nextRemoved);
+    for (bufPtr = chanPtr->inQueueHead; bufPtr != NULL;
+	    bufPtr = bufPtr->nextPtr) {
+	bytesBuffered += BytesLeft(bufPtr);
     }
 
     return bytesBuffered;
@@ -6260,8 +7076,8 @@ Tcl_ChannelBuffered(chan)
  *
  * Tcl_SetChannelBufferSize --
  *
- *	Sets the size of buffers to allocate to store input or output
- *	in the channel. The size must be between 1 byte and 1 MByte.
+ *	Sets the size of buffers to allocate to store input or output in the
+ *	channel. The size must be between 1 byte and 1 MByte.
  *
  * Results:
  *	None.
@@ -6273,13 +7089,12 @@ Tcl_ChannelBuffered(chan)
  */
 
 void
-Tcl_SetChannelBufferSize(chan, sz)
-    Tcl_Channel chan;			/* The channel whose buffer size
-                                         * to set. */
-    int sz;				/* The size to set. */
+Tcl_SetChannelBufferSize(
+    Tcl_Channel chan,		/* The channel whose buffer size to set. */
+    int sz)			/* The size to set. */
 {
-    ChannelState *statePtr;		/* State of real channel structure. */
-    
+    ChannelState *statePtr;	/* State of real channel structure. */
+
     /*
      * Clip the buffer size to force it into the [1,1M] range
      */
@@ -6299,7 +7114,7 @@ Tcl_SetChannelBufferSize(chan, sz)
     }
     if ((statePtr->encoding != NULL) && (statePtr->flags & TCL_WRITABLE)) {
 	statePtr->outputStage = (char *)
-	    ckalloc((unsigned) (statePtr->bufSize + 2));
+		ckalloc((unsigned) (statePtr->bufSize + 2));
     }
 }
 
@@ -6320,12 +7135,12 @@ Tcl_SetChannelBufferSize(chan, sz)
  */
 
 int
-Tcl_GetChannelBufferSize(chan)
-    Tcl_Channel chan;		/* The channel for which to find the
-                                 * buffer size. */
+Tcl_GetChannelBufferSize(
+    Tcl_Channel chan)		/* The channel for which to find the buffer
+				 * size. */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* State of real channel structure. */
+				/* State of real channel structure. */
 
     return statePtr->bufSize;
 }
@@ -6335,44 +7150,43 @@ Tcl_GetChannelBufferSize(chan)
  *
  * Tcl_BadChannelOption --
  *
- *	This procedure generates a "bad option" error message in an
- *	(optional) interpreter.  It is used by channel drivers when 
- *      a invalid Set/Get option is requested. Its purpose is to concatenate
- *      the generic options list to the specific ones and factorize
- *      the generic options error message string.
+ *	This procedure generates a "bad option" error message in an (optional)
+ *	interpreter. It is used by channel drivers when a invalid Set/Get
+ *	option is requested. Its purpose is to concatenate the generic options
+ *	list to the specific ones and factorize the generic options error
+ *	message string.
  *
  * Results:
  *	TCL_ERROR.
  *
  * Side effects:
- *	An error message is generated in interp's result object to
- *	indicate that a command was invoked with the a bad option
- *	The message has the form
- *		bad option "blah": should be one of 
- *              <...generic options...>+<...specific options...>
- *	"blah" is the optionName argument and "<specific options>"
- *	is a space separated list of specific option words.
- *      The function takes good care of inserting minus signs before
- *      each option, commas after, and an "or" before the last option.
+
+ *	An error message is generated in interp's result object to indicate
+ *	that a command was invoked with the a bad option. The message has the
+ *	form:
+ *		bad option "blah": should be one of
+ *		<...generic options...>+<...specific options...>
+ *	"blah" is the optionName argument and "<specific options>" is a space
+ *	separated list of specific option words. The function takes good care
+ *	of inserting minus signs before each option, commas after, and an "or"
+ *	before the last option.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_BadChannelOption(interp, optionName, optionList)
-    Tcl_Interp *interp;			/* Current interpreter. (can be NULL)*/
-    CONST char *optionName;		/* 'bad option' name */
-    CONST char *optionList;		/* Specific options list to append 
-					 * to the standard generic options.
-					 * can be NULL for generic options 
-					 * only.
-					 */
-{
-    if (interp) {
-	CONST char *genericopt = 
-	    "blocking buffering buffersize encoding eofchar translation";
-	CONST char **argv;
-	int  argc, i;
+Tcl_BadChannelOption(
+    Tcl_Interp *interp,		/* Current interpreter (can be NULL).*/
+    const char *optionName,	/* 'bad option' name */
+    const char *optionList)	/* Specific options list to append to the
+				 * standard generic options. Can be NULL for
+				 * generic options only. */
+{
+    if (interp != NULL) {
+	const char *genericopt =
+		"blocking buffering buffersize encoding eofchar translation";
+	const char **argv;
+	int argc, i;
 	Tcl_DString ds;
 
 	Tcl_DStringInit(&ds);
@@ -6381,18 +7195,18 @@ Tcl_BadChannelOption(interp, optionName, optionList)
 	    Tcl_DStringAppend(&ds, " ", 1);
 	    Tcl_DStringAppend(&ds, optionList, -1);
 	}
-	if (Tcl_SplitList(interp, Tcl_DStringValue(&ds), 
+	if (Tcl_SplitList(interp, Tcl_DStringValue(&ds),
 		&argc, &argv) != TCL_OK) {
-	    panic("malformed option list in channel driver");
+	    Tcl_Panic("malformed option list in channel driver");
 	}
 	Tcl_ResetResult(interp);
-	Tcl_AppendResult(interp, "bad option \"", optionName, 
-		"\": should be one of ", (char *) NULL);
+	Tcl_AppendResult(interp, "bad option \"", optionName,
+		"\": should be one of ", NULL);
 	argc--;
 	for (i = 0; i < argc; i++) {
-	    Tcl_AppendResult(interp, "-", argv[i], ", ", (char *) NULL);
+	    Tcl_AppendResult(interp, "-", argv[i], ", ", NULL);
 	}
-	Tcl_AppendResult(interp, "or -", argv[i], (char *) NULL);
+	Tcl_AppendResult(interp, "or -", argv[i], NULL);
 	Tcl_DStringFree(&ds);
 	ckfree((char *) argv);
     }
@@ -6405,39 +7219,40 @@ Tcl_BadChannelOption(interp, optionName, optionList)
  *
  * Tcl_GetChannelOption --
  *
- *	Gets a mode associated with an IO channel. If the optionName arg
- *	is non NULL, retrieves the value of that option. If the optionName
- *	arg is NULL, retrieves a list of alternating option names and
- *	values for the given channel.
+ *	Gets a mode associated with an IO channel. If the optionName arg is
+ *	non NULL, retrieves the value of that option. If the optionName arg is
+ *	NULL, retrieves a list of alternating option names and values for the
+ *	given channel.
  *
  * Results:
- *	A standard Tcl result. Also sets the supplied DString to the
- *	string value of the option(s) returned.
+ *	A standard Tcl result. Also sets the supplied DString to the string
+ *	value of the option(s) returned.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetChannelOption(interp, chan, optionName, dsPtr)
-    Tcl_Interp *interp;		/* For error reporting - can be NULL. */
-    Tcl_Channel chan;		/* Channel on which to get option. */
-    CONST char *optionName;	/* Option to get. */
-    Tcl_DString *dsPtr;		/* Where to store value(s). */
+Tcl_GetChannelOption(
+    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
+    Tcl_Channel chan,		/* Channel on which to get option. */
+    const char *optionName,	/* Option to get. */
+    Tcl_DString *dsPtr)		/* Where to store value(s). */
 {
     size_t len;			/* Length of optionName string. */
     char optionVal[128];	/* Buffer for sprintf. */
     Channel *chanPtr = (Channel *) chan;
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     int flags;
 
     /*
      * Disallow options on dead channels -- channels that have been closed but
      * not yet been deallocated. Such channels can be found if the exit
-     * handler for channel cleanup has run but the channel is still
-     * registered in an interpreter.
+     * handler for channel cleanup has run but the channel is still registered
+     * in an interpreter.
      */
 
     if (CheckForDeadChannel(interp, statePtr)) {
@@ -6463,57 +7278,52 @@ Tcl_GetChannelOption(interp, chan, optionName, dsPtr)
     }
 
     /*
-     * If the optionName is NULL it means that we want a list of all
-     * options and values.
+     * If the optionName is NULL it means that we want a list of all options
+     * and values.
      */
-    
-    if (optionName == (char *) NULL) {
-        len = 0;
+
+    if (optionName == NULL) {
+	len = 0;
     } else {
-        len = strlen(optionName);
-    }
-    
-    if ((len == 0) || ((len > 2) && (optionName[1] == 'b') &&
-            (strncmp(optionName, "-blocking", len) == 0))) {
-        if (len == 0) {
-            Tcl_DStringAppendElement(dsPtr, "-blocking");
-        }
-        Tcl_DStringAppendElement(dsPtr,
+	len = strlen(optionName);
+    }
+
+    if (len == 0 || HaveOpt(2, "-blocking")) {
+	if (len == 0) {
+	    Tcl_DStringAppendElement(dsPtr, "-blocking");
+	}
+	Tcl_DStringAppendElement(dsPtr,
 		(flags & CHANNEL_NONBLOCKING) ? "0" : "1");
-        if (len > 0) {
-            return TCL_OK;
-        }
-    }
-    if ((len == 0) || ((len > 7) && (optionName[1] == 'b') &&
-            (strncmp(optionName, "-buffering", len) == 0))) {
-        if (len == 0) {
-            Tcl_DStringAppendElement(dsPtr, "-buffering");
-        }
-        if (flags & CHANNEL_LINEBUFFERED) {
-            Tcl_DStringAppendElement(dsPtr, "line");
-        } else if (flags & CHANNEL_UNBUFFERED) {
-            Tcl_DStringAppendElement(dsPtr, "none");
-        } else {
-            Tcl_DStringAppendElement(dsPtr, "full");
-        }
-        if (len > 0) {
-            return TCL_OK;
-        }
-    }
-    if ((len == 0) || ((len > 7) && (optionName[1] == 'b') &&
-            (strncmp(optionName, "-buffersize", len) == 0))) {
-        if (len == 0) {
-            Tcl_DStringAppendElement(dsPtr, "-buffersize");
-        }
-        TclFormatInt(optionVal, statePtr->bufSize);
-        Tcl_DStringAppendElement(dsPtr, optionVal);
-        if (len > 0) {
-            return TCL_OK;
-        }
-    }
-    if ((len == 0) ||
-	    ((len > 2) && (optionName[1] == 'e') &&
-		    (strncmp(optionName, "-encoding", len) == 0))) {
+	if (len > 0) {
+	    return TCL_OK;
+	}
+    }
+    if (len == 0 || HaveOpt(7, "-buffering")) {
+	if (len == 0) {
+	    Tcl_DStringAppendElement(dsPtr, "-buffering");
+	}
+	if (flags & CHANNEL_LINEBUFFERED) {
+	    Tcl_DStringAppendElement(dsPtr, "line");
+	} else if (flags & CHANNEL_UNBUFFERED) {
+	    Tcl_DStringAppendElement(dsPtr, "none");
+	} else {
+	    Tcl_DStringAppendElement(dsPtr, "full");
+	}
+	if (len > 0) {
+	    return TCL_OK;
+	}
+    }
+    if (len == 0 || HaveOpt(7, "-buffersize")) {
+	if (len == 0) {
+	    Tcl_DStringAppendElement(dsPtr, "-buffersize");
+	}
+	TclFormatInt(optionVal, statePtr->bufSize);
+	Tcl_DStringAppendElement(dsPtr, optionVal);
+	if (len > 0) {
+	    return TCL_OK;
+	}
+    }
+    if (len == 0 || HaveOpt(2, "-encoding")) {
 	if (len == 0) {
 	    Tcl_DStringAppendElement(dsPtr, "-encoding");
 	}
@@ -6527,108 +7337,111 @@ Tcl_GetChannelOption(interp, chan, optionName, dsPtr)
 	    return TCL_OK;
 	}
     }
-    if ((len == 0) ||
-            ((len > 2) && (optionName[1] == 'e') &&
-                    (strncmp(optionName, "-eofchar", len) == 0))) {
-        if (len == 0) {
-            Tcl_DStringAppendElement(dsPtr, "-eofchar");
-        }
-        if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
-                (TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
-            Tcl_DStringStartSublist(dsPtr);
-        }
-        if (flags & TCL_READABLE) {
-            if (statePtr->inEofChar == 0) {
-                Tcl_DStringAppendElement(dsPtr, "");
-            } else {
-                char buf[4];
-
-                sprintf(buf, "%c", statePtr->inEofChar);
-                Tcl_DStringAppendElement(dsPtr, buf);
-            }
-        }
-        if (flags & TCL_WRITABLE) {
-            if (statePtr->outEofChar == 0) {
-                Tcl_DStringAppendElement(dsPtr, "");
-            } else {
-                char buf[4];
-
-                sprintf(buf, "%c", statePtr->outEofChar);
-                Tcl_DStringAppendElement(dsPtr, buf);
-            }
-        }
-        if ( !(flags & (TCL_READABLE|TCL_WRITABLE))) {
-            /* Not readable or writable (server socket) */
-            Tcl_DStringAppendElement(dsPtr, "");
-        }
-        if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
-                (TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
-            Tcl_DStringEndSublist(dsPtr);
-        }
-        if (len > 0) {
-            return TCL_OK;
-        }
-    }
-    if ((len == 0) ||
-            ((len > 1) && (optionName[1] == 't') &&
-                    (strncmp(optionName, "-translation", len) == 0))) {
-        if (len == 0) {
-            Tcl_DStringAppendElement(dsPtr, "-translation");
-        }
-        if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
-                (TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
-            Tcl_DStringStartSublist(dsPtr);
-        }
-        if (flags & TCL_READABLE) {
-            if (statePtr->inputTranslation == TCL_TRANSLATE_AUTO) {
-                Tcl_DStringAppendElement(dsPtr, "auto");
-            } else if (statePtr->inputTranslation == TCL_TRANSLATE_CR) {
-                Tcl_DStringAppendElement(dsPtr, "cr");
-            } else if (statePtr->inputTranslation == TCL_TRANSLATE_CRLF) {
-                Tcl_DStringAppendElement(dsPtr, "crlf");
-            } else {
-                Tcl_DStringAppendElement(dsPtr, "lf");
-            }
-        }
-        if (flags & TCL_WRITABLE) {
-            if (statePtr->outputTranslation == TCL_TRANSLATE_AUTO) {
-                Tcl_DStringAppendElement(dsPtr, "auto");
-            } else if (statePtr->outputTranslation == TCL_TRANSLATE_CR) {
-                Tcl_DStringAppendElement(dsPtr, "cr");
-            } else if (statePtr->outputTranslation == TCL_TRANSLATE_CRLF) {
-                Tcl_DStringAppendElement(dsPtr, "crlf");
-            } else {
-                Tcl_DStringAppendElement(dsPtr, "lf");
-            }
-        }
-        if ( !(flags & (TCL_READABLE|TCL_WRITABLE))) {
-            /* Not readable or writable (server socket) */
-            Tcl_DStringAppendElement(dsPtr, "auto");
-        }
-        if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
-                (TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
-            Tcl_DStringEndSublist(dsPtr);
-        }
-        if (len > 0) {
-            return TCL_OK;
-        }
-    }
-    if (chanPtr->typePtr->getOptionProc != (Tcl_DriverGetOptionProc *) NULL) {
+    if (len == 0 || HaveOpt(2, "-eofchar")) {
+	if (len == 0) {
+	    Tcl_DStringAppendElement(dsPtr, "-eofchar");
+	}
+	if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
+		(TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
+	    Tcl_DStringStartSublist(dsPtr);
+	}
+	if (flags & TCL_READABLE) {
+	    if (statePtr->inEofChar == 0) {
+		Tcl_DStringAppendElement(dsPtr, "");
+	    } else {
+		char buf[4];
+
+		sprintf(buf, "%c", statePtr->inEofChar);
+		Tcl_DStringAppendElement(dsPtr, buf);
+	    }
+	}
+	if (flags & TCL_WRITABLE) {
+	    if (statePtr->outEofChar == 0) {
+		Tcl_DStringAppendElement(dsPtr, "");
+	    } else {
+		char buf[4];
+
+		sprintf(buf, "%c", statePtr->outEofChar);
+		Tcl_DStringAppendElement(dsPtr, buf);
+	    }
+	}
+	if (!(flags & (TCL_READABLE|TCL_WRITABLE))) {
+	    /*
+	     * Not readable or writable (e.g. server socket)
+	     */
+
+	    Tcl_DStringAppendElement(dsPtr, "");
+	}
+	if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
+		(TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
+	    Tcl_DStringEndSublist(dsPtr);
+	}
+	if (len > 0) {
+	    return TCL_OK;
+	}
+    }
+    if (len == 0 || HaveOpt(1, "-translation")) {
+	if (len == 0) {
+	    Tcl_DStringAppendElement(dsPtr, "-translation");
+	}
+	if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
+		(TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
+	    Tcl_DStringStartSublist(dsPtr);
+	}
+	if (flags & TCL_READABLE) {
+	    if (statePtr->inputTranslation == TCL_TRANSLATE_AUTO) {
+		Tcl_DStringAppendElement(dsPtr, "auto");
+	    } else if (statePtr->inputTranslation == TCL_TRANSLATE_CR) {
+		Tcl_DStringAppendElement(dsPtr, "cr");
+	    } else if (statePtr->inputTranslation == TCL_TRANSLATE_CRLF) {
+		Tcl_DStringAppendElement(dsPtr, "crlf");
+	    } else {
+		Tcl_DStringAppendElement(dsPtr, "lf");
+	    }
+	}
+	if (flags & TCL_WRITABLE) {
+	    if (statePtr->outputTranslation == TCL_TRANSLATE_AUTO) {
+		Tcl_DStringAppendElement(dsPtr, "auto");
+	    } else if (statePtr->outputTranslation == TCL_TRANSLATE_CR) {
+		Tcl_DStringAppendElement(dsPtr, "cr");
+	    } else if (statePtr->outputTranslation == TCL_TRANSLATE_CRLF) {
+		Tcl_DStringAppendElement(dsPtr, "crlf");
+	    } else {
+		Tcl_DStringAppendElement(dsPtr, "lf");
+	    }
+	}
+	if (!(flags & (TCL_READABLE|TCL_WRITABLE))) {
+	    /*
+	     * Not readable or writable (e.g. server socket)
+	     */
+
+	    Tcl_DStringAppendElement(dsPtr, "auto");
+	}
+	if (((flags & (TCL_READABLE|TCL_WRITABLE)) ==
+		(TCL_READABLE|TCL_WRITABLE)) && (len == 0)) {
+	    Tcl_DStringEndSublist(dsPtr);
+	}
+	if (len > 0) {
+	    return TCL_OK;
+	}
+    }
+
+    if (chanPtr->typePtr->getOptionProc != NULL) {
 	/*
-	 * let the driver specific handle additional options
-	 * and result code and message.
+	 * Let the driver specific handle additional options and result code
+	 * and message.
 	 */
 
-        return (chanPtr->typePtr->getOptionProc) (chanPtr->instanceData,
+	return (chanPtr->typePtr->getOptionProc) (chanPtr->instanceData,
 		interp, optionName, dsPtr);
     } else {
 	/*
-	 * no driver specific options case.
+	 * No driver specific options case.
 	 */
 
-        if (len == 0) {
-            return TCL_OK;
-        }
+	if (len == 0) {
+	    return TCL_OK;
+	}
 	return Tcl_BadChannelOption(interp, optionName, NULL);
     }
 }
@@ -6641,8 +7454,8 @@ Tcl_GetChannelOption(interp, chan, optionName, dsPtr)
  *	Sets an option on a channel.
  *
  * Results:
- *	A standard Tcl result.  On error, sets interp's result object
- *	if interp is not NULL.
+ *	A standard Tcl result. On error, sets interp's result object if
+ *	interp is not NULL.
  *
  * Side effects:
  *	May modify an option on a device.
@@ -6651,17 +7464,19 @@ Tcl_GetChannelOption(interp, chan, optionName, dsPtr)
  */
 
 int
-Tcl_SetChannelOption(interp, chan, optionName, newValue)
-    Tcl_Interp *interp;		/* For error reporting - can be NULL. */
-    Tcl_Channel chan;		/* Channel on which to set mode. */
-    CONST char *optionName;	/* Which option to set? */
-    CONST char *newValue;	/* New value for option. */
-{
-    Channel *chanPtr = (Channel *) chan;	/* The real IO channel. */
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+Tcl_SetChannelOption(
+    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
+    Tcl_Channel chan,		/* Channel on which to set mode. */
+    const char *optionName,	/* Which option to set? */
+    const char *newValue)	/* New value for option. */
+{
+    Channel *chanPtr = (Channel *) chan;
+				/* The real IO channel. */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     size_t len;			/* Length of optionName string. */
     int argc;
-    CONST char **argv;
+    const char **argv;
 
     /*
      * If the channel is in the middle of a background copy, fail.
@@ -6669,18 +7484,17 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 
     if (statePtr->csPtrR || statePtr->csPtrW) {
 	if (interp) {
-	    Tcl_AppendResult(interp,
-		    "unable to set channel options: background copy in progress",
-		    (char *) NULL);
+	    Tcl_AppendResult(interp, "unable to set channel options: "
+		    "background copy in progress", NULL);
 	}
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
      * Disallow options on dead channels -- channels that have been closed but
      * not yet been deallocated. Such channels can be found if the exit
-     * handler for channel cleanup has run but the channel is still
-     * registered in an interpreter.
+     * handler for channel cleanup has run but the channel is still registered
+     * in an interpreter.
      */
 
     if (CheckForDeadChannel(NULL, statePtr)) {
@@ -6695,50 +7509,47 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 
     len = strlen(optionName);
 
-    if ((len > 2) && (optionName[1] == 'b') &&
-            (strncmp(optionName, "-blocking", len) == 0)) {
+    if (HaveOpt(2, "-blocking")) {
 	int newMode;
-        if (Tcl_GetBoolean(interp, newValue, &newMode) == TCL_ERROR) {
-            return TCL_ERROR;
-        }
-        if (newMode) {
-            newMode = TCL_MODE_BLOCKING;
-        } else {
-            newMode = TCL_MODE_NONBLOCKING;
-        }
+
+	if (Tcl_GetBoolean(interp, newValue, &newMode) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
+	if (newMode) {
+	    newMode = TCL_MODE_BLOCKING;
+	} else {
+	    newMode = TCL_MODE_NONBLOCKING;
+	}
 	return SetBlockMode(interp, chanPtr, newMode);
-    } else if ((len > 7) && (optionName[1] == 'b') &&
-            (strncmp(optionName, "-buffering", len) == 0)) {
-        len = strlen(newValue);
-        if ((newValue[0] == 'f') && (strncmp(newValue, "full", len) == 0)) {
-            statePtr->flags &=
-                (~(CHANNEL_UNBUFFERED|CHANNEL_LINEBUFFERED));
-        } else if ((newValue[0] == 'l') &&
-                (strncmp(newValue, "line", len) == 0)) {
-            statePtr->flags &= (~(CHANNEL_UNBUFFERED));
-            statePtr->flags |= CHANNEL_LINEBUFFERED;
-        } else if ((newValue[0] == 'n') &&
-                (strncmp(newValue, "none", len) == 0)) {
-            statePtr->flags &= (~(CHANNEL_LINEBUFFERED));
-            statePtr->flags |= CHANNEL_UNBUFFERED;
-        } else {
-            if (interp) {
-                Tcl_AppendResult(interp, "bad value for -buffering: ",
-                        "must be one of full, line, or none",
-                        (char *) NULL);
-                return TCL_ERROR;
-            }
-        }
+    } else if (HaveOpt(7, "-buffering")) {
+	len = strlen(newValue);
+	if ((newValue[0] == 'f') && (strncmp(newValue, "full", len) == 0)) {
+	    statePtr->flags &=
+		    ~(CHANNEL_UNBUFFERED|CHANNEL_LINEBUFFERED);
+	} else if ((newValue[0] == 'l') &&
+		(strncmp(newValue, "line", len) == 0)) {
+	    ResetFlag(statePtr, CHANNEL_UNBUFFERED);
+	    SetFlag(statePtr, CHANNEL_LINEBUFFERED);
+	} else if ((newValue[0] == 'n') &&
+		(strncmp(newValue, "none", len) == 0)) {
+	    ResetFlag(statePtr, CHANNEL_LINEBUFFERED);
+	    SetFlag(statePtr, CHANNEL_UNBUFFERED);
+	} else {
+	    if (interp) {
+		Tcl_AppendResult(interp, "bad value for -buffering: "
+			"must be one of full, line, or none", NULL);
+		return TCL_ERROR;
+	    }
+	}
 	return TCL_OK;
-    } else if ((len > 7) && (optionName[1] == 'b') &&
-            (strncmp(optionName, "-buffersize", len) == 0)) {
+    } else if (HaveOpt(7, "-buffersize")) {
 	int newBufferSize;
+
 	if (Tcl_GetInt(interp, newValue, &newBufferSize) == TCL_ERROR) {
 	    return TCL_ERROR;
 	}
 	Tcl_SetChannelBufferSize(chan, newBufferSize);
-    } else if ((len > 2) && (optionName[1] == 'e') &&
-	    (strncmp(optionName, "-encoding", len) == 0)) {
+    } else if (HaveOpt(2, "-encoding")) {
 	Tcl_Encoding encoding;
 
 	if ((newValue[0] == '\0') || (strcmp(newValue, "binary") == 0)) {
@@ -6749,10 +7560,12 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 		return TCL_ERROR;
 	    }
 	}
+
 	/*
 	 * When the channel has an escape sequence driven encoding such as
 	 * iso2022, the terminated escape sequence must write to the buffer.
 	 */
+
 	if ((statePtr->encoding != NULL) && (statePtr->curOutPtr != NULL)
 		&& (CheckChannelErrors(statePtr, TCL_WRITABLE) == 0)) {
 	    statePtr->outputEncodingFlags |= TCL_ENCODING_END;
@@ -6764,74 +7577,77 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 	statePtr->inputEncodingFlags = TCL_ENCODING_START;
 	statePtr->outputEncodingState = NULL;
 	statePtr->outputEncodingFlags = TCL_ENCODING_START;
-	statePtr->flags &= ~CHANNEL_NEED_MORE_DATA;
+	ResetFlag(statePtr, CHANNEL_NEED_MORE_DATA);
 	UpdateInterest(chanPtr);
-    } else if ((len > 2) && (optionName[1] == 'e') &&
-            (strncmp(optionName, "-eofchar", len) == 0)) {
-        if (Tcl_SplitList(interp, newValue, &argc, &argv) == TCL_ERROR) {
-            return TCL_ERROR;
-        }
-        if (argc == 0) {
-            statePtr->inEofChar = 0;
-            statePtr->outEofChar = 0;
-        } else if (argc == 1) {
-            if (statePtr->flags & TCL_WRITABLE) {
-                statePtr->outEofChar = (int) argv[0][0];
-            }
-            if (statePtr->flags & TCL_READABLE) {
-                statePtr->inEofChar = (int) argv[0][0];
-            }
-        } else if (argc != 2) {
-            if (interp) {
-                Tcl_AppendResult(interp,
-                        "bad value for -eofchar: should be a list of zero,",
-                        " one, or two elements", (char *) NULL);
-            }
-            ckfree((char *) argv);
-            return TCL_ERROR;
-        } else {
-            if (statePtr->flags & TCL_READABLE) {
-                statePtr->inEofChar = (int) argv[0][0];
-            }
-            if (statePtr->flags & TCL_WRITABLE) {
-                statePtr->outEofChar = (int) argv[1][0];
-            }
-        }
-        if (argv != NULL) {
-            ckfree((char *) argv);
-        }
+    } else if (HaveOpt(2, "-eofchar")) {
+	if (Tcl_SplitList(interp, newValue, &argc, &argv) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
+	if (argc == 0) {
+	    statePtr->inEofChar = 0;
+	    statePtr->outEofChar = 0;
+	} else if (argc == 1 || argc == 2) {
+	    int outIndex = (argc - 1);
+	    int inValue = (int) argv[0][0];
+	    int outValue = (int) argv[outIndex][0];
+	    if (inValue & 0x80 || outValue & 0x80) {
+		if (interp) {
+		    Tcl_AppendResult(interp, "bad value for -eofchar: ",
+			    "must be non-NUL ASCII character", NULL);
+		}
+		ckfree((char *) argv);
+		return TCL_ERROR;
+	    }
+	    if (statePtr->flags & TCL_READABLE) {
+		statePtr->inEofChar = inValue;
+	    }
+	    if (statePtr->flags & TCL_WRITABLE) {
+		statePtr->outEofChar = outValue;
+	    }
+	} else {
+	    if (interp) {
+		Tcl_AppendResult(interp,
+			"bad value for -eofchar: should be a list of zero,"
+			" one, or two elements", NULL);
+	    }
+	    ckfree((char *) argv);
+	    return TCL_ERROR;
+	}
+	if (argv != NULL) {
+	    ckfree((char *) argv);
+	}
 
 	/*
-	 * [SF Tcl Bug 930851] Reset EOF and BLOCKED flags. Changing
-	 * the character which signals eof can transform a current eof
-	 * condition into a 'go ahead'. Ditto for blocked.
+	 * [Bug 930851] Reset EOF and BLOCKED flags. Changing the character
+	 * which signals eof can transform a current eof condition into a 'go
+	 * ahead'. Ditto for blocked.
 	 */
 
-	statePtr->flags &= (~(CHANNEL_EOF | CHANNEL_STICKY_EOF | CHANNEL_BLOCKED));
+	statePtr->flags &=
+		~(CHANNEL_EOF | CHANNEL_STICKY_EOF | CHANNEL_BLOCKED);
 
 	return TCL_OK;
-    } else if ((len > 1) && (optionName[1] == 't') &&
-            (strncmp(optionName, "-translation", len) == 0)) {
-	CONST char *readMode, *writeMode;
+    } else if (HaveOpt(1, "-translation")) {
+	const char *readMode, *writeMode;
 
-        if (Tcl_SplitList(interp, newValue, &argc, &argv) == TCL_ERROR) {
-            return TCL_ERROR;
-        }
+	if (Tcl_SplitList(interp, newValue, &argc, &argv) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
 
-        if (argc == 1) {
+	if (argc == 1) {
 	    readMode = (statePtr->flags & TCL_READABLE) ? argv[0] : NULL;
 	    writeMode = (statePtr->flags & TCL_WRITABLE) ? argv[0] : NULL;
 	} else if (argc == 2) {
 	    readMode = (statePtr->flags & TCL_READABLE) ? argv[0] : NULL;
 	    writeMode = (statePtr->flags & TCL_WRITABLE) ? argv[1] : NULL;
 	} else {
-            if (interp) {
-                Tcl_AppendResult(interp,
-                        "bad value for -translation: must be a one or two",
-                        " element list", (char *) NULL);
-            }
-            ckfree((char *) argv);
-            return TCL_ERROR;
+	    if (interp) {
+		Tcl_AppendResult(interp,
+			"bad value for -translation: must be a one or two"
+			" element list", NULL);
+	    }
+	    ckfree((char *) argv);
+	    return TCL_ERROR;
 	}
 
 	if (readMode) {
@@ -6843,7 +7659,7 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 	    } else if (strcmp(readMode, "binary") == 0) {
 		translation = TCL_TRANSLATE_LF;
 		statePtr->inEofChar = 0;
-		Tcl_FreeEncoding(statePtr->encoding);		    
+		Tcl_FreeEncoding(statePtr->encoding);
 		statePtr->encoding = NULL;
 	    } else if (strcmp(readMode, "lf") == 0) {
 		translation = TCL_TRANSLATE_LF;
@@ -6856,24 +7672,23 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 	    } else {
 		if (interp) {
 		    Tcl_AppendResult(interp,
-			    "bad value for -translation: ",
-			    "must be one of auto, binary, cr, lf, crlf,",
-			    " or platform", (char *) NULL);
+			    "bad value for -translation: "
+			    "must be one of auto, binary, cr, lf, crlf,"
+			    " or platform", NULL);
 		}
 		ckfree((char *) argv);
 		return TCL_ERROR;
 	    }
 
 	    /*
-	     * Reset the EOL flags since we need to look at any buffered
-	     * data to see if the new translation mode allows us to
-	     * complete the line.
+	     * Reset the EOL flags since we need to look at any buffered data
+	     * to see if the new translation mode allows us to complete the
+	     * line.
 	     */
 
 	    if (translation != statePtr->inputTranslation) {
 		statePtr->inputTranslation = translation;
-		statePtr->flags &= ~(INPUT_SAW_CR);
-		statePtr->flags &= ~(CHANNEL_NEED_MORE_DATA);
+		ResetFlag(statePtr, INPUT_SAW_CR | CHANNEL_NEED_MORE_DATA);
 		UpdateInterest(chanPtr);
 	    }
 	}
@@ -6882,10 +7697,9 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 		/* Do nothing. */
 	    } else if (strcmp(writeMode, "auto") == 0) {
 		/*
-		 * This is a hack to get TCP sockets to produce output
-		 * in CRLF mode if they are being set into AUTO mode.
-		 * A better solution for achieving this effect will be
-		 * coded later.
+		 * This is a hack to get TCP sockets to produce output in CRLF
+		 * mode if they are being set into AUTO mode. A better
+		 * solution for achieving this effect will be coded later.
 		 */
 
 		if (strcmp(Tcl_ChannelName(chanPtr->typePtr), "tcp") == 0) {
@@ -6896,7 +7710,7 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 	    } else if (strcmp(writeMode, "binary") == 0) {
 		statePtr->outEofChar = 0;
 		statePtr->outputTranslation = TCL_TRANSLATE_LF;
-		Tcl_FreeEncoding(statePtr->encoding);		    
+		Tcl_FreeEncoding(statePtr->encoding);
 		statePtr->encoding = NULL;
 	    } else if (strcmp(writeMode, "lf") == 0) {
 		statePtr->outputTranslation = TCL_TRANSLATE_LF;
@@ -6909,21 +7723,21 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 	    } else {
 		if (interp) {
 		    Tcl_AppendResult(interp,
-			    "bad value for -translation: ",
-			    "must be one of auto, binary, cr, lf, crlf,",
-			    " or platform", (char *) NULL);
+			    "bad value for -translation: "
+			    "must be one of auto, binary, cr, lf, crlf,"
+			    " or platform", NULL);
 		}
 		ckfree((char *) argv);
 		return TCL_ERROR;
 	    }
 	}
-        ckfree((char *) argv);            
-        return TCL_OK;
+	ckfree((char *) argv);
+	return TCL_OK;
     } else if (chanPtr->typePtr->setOptionProc != NULL) {
-        return (*chanPtr->typePtr->setOptionProc)(chanPtr->instanceData,
-                interp, optionName, newValue);
+	return (*chanPtr->typePtr->setOptionProc)(chanPtr->instanceData,
+		interp, optionName, newValue);
     } else {
-	return Tcl_BadChannelOption(interp, optionName, (char *) NULL);
+	return Tcl_BadChannelOption(interp, optionName, NULL);
     }
 
     /*
@@ -6934,14 +7748,12 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
 	RecycleBuffer(statePtr, statePtr->saveInBufPtr, 1);
 	statePtr->saveInBufPtr = NULL;
     }
-    if (statePtr->inQueueHead != NULL) {
-	if ((statePtr->inQueueHead->nextPtr == NULL)
-		&& (statePtr->inQueueHead->nextAdded ==
-			statePtr->inQueueHead->nextRemoved)) {
-	    RecycleBuffer(statePtr, statePtr->inQueueHead, 1);
-	    statePtr->inQueueHead = NULL;
-	    statePtr->inQueueTail = NULL;
-	}
+    if ((statePtr->inQueueHead != NULL)
+	    && (statePtr->inQueueHead->nextPtr == NULL)
+	    && IsBufferEmpty(statePtr->inQueueHead)) {
+	RecycleBuffer(statePtr, statePtr->inQueueHead, 1);
+	statePtr->inQueueHead = NULL;
+	statePtr->inQueueTail = NULL;
     }
 
     /*
@@ -6949,12 +7761,11 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
      */
 
     if (statePtr->outputStage != NULL) {
-	ckfree((char *) statePtr->outputStage);
+	ckfree(statePtr->outputStage);
 	statePtr->outputStage = NULL;
     }
     if ((statePtr->encoding != NULL) && (statePtr->flags & TCL_WRITABLE)) {
-	statePtr->outputStage = (char *) 
-	    ckalloc((unsigned) (statePtr->bufSize + 2));
+	statePtr->outputStage = ckalloc((unsigned) (statePtr->bufSize + 2));
     }
     return TCL_OK;
 }
@@ -6964,11 +7775,10 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
  *
  * CleanupChannelHandlers --
  *
- *	Removes channel handlers that refer to the supplied interpreter,
- *	so that if the actual channel is not closed now, these handlers
- *	will not run on subsequent events on the channel. This would be
- *	erroneous, because the interpreter no longer has a reference to
- *	this channel.
+ *	Removes channel handlers that refer to the supplied interpreter, so
+ *	that if the actual channel is not closed now, these handlers will not
+ *	run on subsequent events on the channel. This would be erroneous,
+ *	because the interpreter no longer has a reference to this channel.
  *
  * Results:
  *	None.
@@ -6980,38 +7790,37 @@ Tcl_SetChannelOption(interp, chan, optionName, newValue)
  */
 
 static void
-CleanupChannelHandlers(interp, chanPtr)
-    Tcl_Interp *interp;
-    Channel *chanPtr;
+CleanupChannelHandlers(
+    Tcl_Interp *interp,
+    Channel *chanPtr)
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     EventScriptRecord *sPtr, *prevPtr, *nextPtr;
 
     /*
-     * Remove fileevent records on this channel that refer to the
-     * given interpreter.
+     * Remove fileevent records on this channel that refer to the given
+     * interpreter.
      */
-    
-    for (sPtr = statePtr->scriptRecordPtr,
-             prevPtr = (EventScriptRecord *) NULL;
-	 sPtr != (EventScriptRecord *) NULL;
-	 sPtr = nextPtr) {
-        nextPtr = sPtr->nextPtr;
-        if (sPtr->interp == interp) {
-            if (prevPtr == (EventScriptRecord *) NULL) {
-                statePtr->scriptRecordPtr = nextPtr;
-            } else {
-                prevPtr->nextPtr = nextPtr;
-            }
 
-            Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
-                    TclChannelEventScriptInvoker, (ClientData) sPtr);
+    for (sPtr = statePtr->scriptRecordPtr, prevPtr = NULL;
+	    sPtr != NULL; sPtr = nextPtr) {
+	nextPtr = sPtr->nextPtr;
+	if (sPtr->interp == interp) {
+	    if (prevPtr == NULL) {
+		statePtr->scriptRecordPtr = nextPtr;
+	    } else {
+		prevPtr->nextPtr = nextPtr;
+	    }
+
+	    Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
+		    TclChannelEventScriptInvoker, sPtr);
 
-	    Tcl_DecrRefCount(sPtr->scriptPtr);
-            ckfree((char *) sPtr);
-        } else {
-            prevPtr = sPtr;
-        }
+	    TclDecrRefCount(sPtr->scriptPtr);
+	    ckfree((char *) sPtr);
+	} else {
+	    prevPtr = sPtr;
+	}
     }
 }
 
@@ -7020,10 +7829,9 @@ CleanupChannelHandlers(interp, chanPtr)
  *
  * Tcl_NotifyChannel --
  *
- *	This procedure is called by a channel driver when a driver
- *	detects an event on a channel.  This procedure is responsible
- *	for actually handling the event by invoking any channel
- *	handler callbacks.
+ *	This procedure is called by a channel driver when a driver detects an
+ *	event on a channel. This procedure is responsible for actually
+ *	handling the event by invoking any channel handler callbacks.
  *
  * Results:
  *	None.
@@ -7035,62 +7843,62 @@ CleanupChannelHandlers(interp, chanPtr)
  */
 
 void
-Tcl_NotifyChannel(channel, mask)
-    Tcl_Channel channel;	/* Channel that detected an event. */
-    int mask;			/* OR'ed combination of TCL_READABLE,
+Tcl_NotifyChannel(
+    Tcl_Channel channel,	/* Channel that detected an event. */
+    int mask)			/* OR'ed combination of TCL_READABLE,
 				 * TCL_WRITABLE, or TCL_EXCEPTION: indicates
 				 * which events were detected. */
 {
     Channel *chanPtr = (Channel *) channel;
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     ChannelHandler *chPtr;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     NextChannelHandler nh;
-    Channel* upChanPtr;
-    Tcl_ChannelType* upTypePtr;
+    Channel *upChanPtr;
+    const Tcl_ChannelType *upTypePtr;
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-    /* [SF Tcl Bug 943274]
-     * For a non-blocking channel without blockmodeproc we keep track
-     * of actual input coming from the OS so that we can do a credible
-     * imitation of non-blocking behaviour.
+    /*
+     * [SF Tcl Bug 943274] For a non-blocking channel without blockmodeproc we
+     * keep track of actual input coming from the OS so that we can do a
+     * credible imitation of non-blocking behaviour.
      */
 
     if ((mask & TCL_READABLE) &&
-	(statePtr->flags & CHANNEL_NONBLOCKING) &&
-	(Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL) &&
-	!(statePtr->flags & CHANNEL_TIMER_FEV)) {
-
-        statePtr->flags |= CHANNEL_HAS_MORE_DATA;
+	    (statePtr->flags & CHANNEL_NONBLOCKING) &&
+	    (Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL) &&
+	    !(statePtr->flags & CHANNEL_TIMER_FEV)) {
+	SetFlag(statePtr, CHANNEL_HAS_MORE_DATA);
     }
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
 
     /*
-     * In contrast to the other API functions this procedure walks towards
-     * the top of a stack and not down from it.
+     * In contrast to the other API functions this procedure walks towards the
+     * top of a stack and not down from it.
      *
      * The channel calling this procedure is the one who generated the event,
-     * and thus does not take part in handling it. IOW, its HandlerProc is
-     * not called, instead we begin with the channel above it.
+     * and thus does not take part in handling it. IOW, its HandlerProc is not
+     * called, instead we begin with the channel above it.
      *
-     * This behaviour also allows the transformation channels to
-     * generate their own events and pass them upward.
+     * This behaviour also allows the transformation channels to generate
+     * their own events and pass them upward.
      */
 
-    while (mask && (chanPtr->upChanPtr != ((Channel*) NULL))) {
-	Tcl_DriverHandlerProc* upHandlerProc;
+    while (mask && (chanPtr->upChanPtr != (NULL))) {
+	Tcl_DriverHandlerProc *upHandlerProc;
 
-        upChanPtr = chanPtr->upChanPtr;
+	upChanPtr = chanPtr->upChanPtr;
 	upTypePtr = upChanPtr->typePtr;
 	upHandlerProc = Tcl_ChannelHandlerProc(upTypePtr);
 	if (upHandlerProc != NULL) {
 	    mask = (*upHandlerProc) (upChanPtr->instanceData, mask);
 	}
 
-	/* ELSE:
-	 * Ignore transformations which are unable to handle the event
-	 * coming from below. Assume that they don't change the mask and
-	 * pass it on.
+	/*
+	 * ELSE: Ignore transformations which are unable to handle the event
+	 * coming from below. Assume that they don't change the mask and pass
+	 * it on.
 	 */
 
 	chanPtr = upChanPtr;
@@ -7099,29 +7907,28 @@ Tcl_NotifyChannel(channel, mask)
     channel = (Tcl_Channel) chanPtr;
 
     /*
-     * Here we have either reached the top of the stack or the mask is
-     * empty.  We break out of the procedure if it is the latter.
+     * Here we have either reached the top of the stack or the mask is empty.
+     * We break out of the procedure if it is the latter.
      */
 
     if (!mask) {
-        return;
+	return;
     }
 
     /*
-     * We are now above the topmost channel in a stack and have events
-     * left. Now call the channel handlers as usual.
+     * We are now above the topmost channel in a stack and have events left.
+     * Now call the channel handlers as usual.
      *
      * Preserve the channel struct in case the script closes it.
      */
-     
-    Tcl_Preserve((ClientData) channel);
-    Tcl_Preserve((ClientData) statePtr);
+
+    Tcl_Preserve(channel);
+    Tcl_Preserve(statePtr);
 
     /*
-     * If we are flushing in the background, be sure to call FlushChannel
-     * for writable events.  Note that we have to discard the writable
-     * event so we don't call any write handlers before the flush is
-     * complete.
+     * If we are flushing in the background, be sure to call FlushChannel for
+     * writable events. Note that we have to discard the writable event so we
+     * don't call any write handlers before the flush is complete.
      */
 
     if ((statePtr->flags & BG_FLUSH_SCHEDULED) && (mask & TCL_WRITABLE)) {
@@ -7133,12 +7940,12 @@ Tcl_NotifyChannel(channel, mask)
      * Add this invocation to the list of recursive invocations of
      * ChannelHandlerEventProc.
      */
-    
-    nh.nextHandlerPtr = (ChannelHandler *) NULL;
+
+    nh.nextHandlerPtr = NULL;
     nh.nestedHandlerPtr = tsdPtr->nestedHandlerPtr;
     tsdPtr->nestedHandlerPtr = &nh;
 
-    for (chPtr = statePtr->chPtr; chPtr != (ChannelHandler *) NULL; ) {
+    for (chPtr = statePtr->chPtr; chPtr != NULL; ) {
 	/*
 	 * If this channel handler is interested in any of the events that
 	 * have occurred on the channel, invoke its procedure.
@@ -7154,17 +7961,17 @@ Tcl_NotifyChannel(channel, mask)
     }
 
     /*
-     * Update the notifier interest, since it may have changed after
-     * invoking event handlers. Skip that if the channel was deleted
-     * in the call to the channel handler.
+     * Update the notifier interest, since it may have changed after invoking
+     * event handlers. Skip that if the channel was deleted in the call to the
+     * channel handler.
      */
 
     if (chanPtr->typePtr != NULL) {
-        UpdateInterest(chanPtr);
+	UpdateInterest(chanPtr);
     }
 
-    Tcl_Release((ClientData) statePtr);
-    Tcl_Release((ClientData) channel);
+    Tcl_Release(statePtr);
+    Tcl_Release(channel);
 
     tsdPtr->nestedHandlerPtr = nh.nestedHandlerPtr;
 }
@@ -7174,8 +7981,8 @@ Tcl_NotifyChannel(channel, mask)
  *
  * UpdateInterest --
  *
- *	Arrange for the notifier to call us back at appropriate times
- *	based on the current state of the channel.
+ *	Arrange for the notifier to call us back at appropriate times based on
+ *	the current state of the channel.
  *
  * Results:
  *	None.
@@ -7187,15 +7994,16 @@ Tcl_NotifyChannel(channel, mask)
  */
 
 static void
-UpdateInterest(chanPtr)
-    Channel *chanPtr;		/* Channel to update. */
+UpdateInterest(
+    Channel *chanPtr)		/* Channel to update. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     int mask = statePtr->interestMask;
 
     /*
-     * If there are flushed buffers waiting to be written, then
-     * we need to watch for the channel to become writable.
+     * If there are flushed buffers waiting to be written, then we need to
+     * watch for the channel to become writable.
      */
 
     if (statePtr->flags & BG_FLUSH_SCHEDULED) {
@@ -7205,62 +8013,59 @@ UpdateInterest(chanPtr)
     /*
      * If there is data in the input queue, and we aren't waiting for more
      * data, then we need to schedule a timer so we don't block in the
-     * notifier.  Also, cancel the read interest so we don't get duplicate
+     * notifier. Also, cancel the read interest so we don't get duplicate
      * events.
      */
 
     if (mask & TCL_READABLE) {
 	if (!(statePtr->flags & CHANNEL_NEED_MORE_DATA)
-		&& (statePtr->inQueueHead != (ChannelBuffer *) NULL)
-		&& (statePtr->inQueueHead->nextRemoved <
-			statePtr->inQueueHead->nextAdded)) {
+		&& (statePtr->inQueueHead != NULL)
+		&& IsBufferReady(statePtr->inQueueHead)) {
 	    mask &= ~TCL_READABLE;
 
 	    /*
 	     * Andreas Kupries, April 11, 2003
 	     *
-	     * Some operating systems (Solaris 2.6 and higher (but not
-	     * Solaris 2.5, go figure)) generate READABLE and
-	     * EXCEPTION events when select()'ing [*] on a plain file,
-	     * even if EOF was not yet reached. This is a problem in
-	     * the following situation:
+	     * Some operating systems (Solaris 2.6 and higher (but not Solaris
+	     * 2.5, go figure)) generate READABLE and EXCEPTION events when
+	     * select()'ing [*] on a plain file, even if EOF was not yet
+	     * reached. This is a problem in the following situation:
 	     *
-	     * - An extension asks to get both READABLE and EXCEPTION
-	     *   events.
-	     * - It reads data into a buffer smaller than the buffer
-	     *   used by Tcl itself.
-	     * - It does not process all events in the event queue, but
-	     *   only only one, at least in some situations.
+	     * - An extension asks to get both READABLE and EXCEPTION events.
+	     * - It reads data into a buffer smaller than the buffer used by
+	     *	 Tcl itself.
+	     * - It does not process all events in the event queue, but only
+	     *	 one, at least in some situations.
 	     *
 	     * In that case we can get into a situation where
 	     *
 	     * - Tcl drops READABLE here, because it has data in its own
-	     *   buffers waiting to be read by the extension.
+	     *	 buffers waiting to be read by the extension.
 	     * - A READABLE event is syntesized via timer.
 	     * - The OS still reports the EXCEPTION condition on the file.
-	     * - And the extension gets the EXCPTION event first, and
-	     *   handles this as EOF.
+	     * - And the extension gets the EXCPTION event first, and handles
+	     *	 this as EOF.
 	     *
 	     * End result ==> Premature end of reading from a file.
 	     *
-	     * The concrete example is 'Expect', and its [expect]
-	     * command (and at the C-level, deep in the bowels of
-	     * Expect, 'exp_get_next_event'. See marker 'SunOS' for
-	     * commentary in that function too).
+	     * The concrete example is 'Expect', and its [expect] command
+	     * (and at the C-level, deep in the bowels of Expect,
+	     * 'exp_get_next_event'. See marker 'SunOS' for commentary in
+	     * that function too).
 	     *
-	     * [*] As the Tcl notifier does. See also for marker
-	     * 'SunOS' in file 'exp_event.c' of Expect.
+	     * [*] As the Tcl notifier does. See also for marker 'SunOS' in
+	     * file 'exp_event.c' of Expect.
 	     *
-	     * Our solution here is to drop the interest in the
-	     * EXCEPTION events too. This compiles on all platforms,
-	     * and also passes the testsuite on all of them.
+	     * Our solution here is to drop the interest in the EXCEPTION
+	     * events too. This compiles on all platforms, and also passes the
+	     * testsuite on all of them.
 	     */
 
 	    mask &= ~TCL_EXCEPTION;
 
 	    if (!statePtr->timer) {
 		statePtr->timer = Tcl_CreateTimerHandler(0, ChannelTimerProc,
-			(ClientData) chanPtr);
+			chanPtr);
 	    }
 	}
     }
@@ -7272,8 +8077,8 @@ UpdateInterest(chanPtr)
  *
  * ChannelTimerProc --
  *
- *	Timer handler scheduled by UpdateInterest to monitor the
- *	channel buffers until they are empty.
+ *	Timer handler scheduled by UpdateInterest to monitor the channel
+ *	buffers until they are empty.
  *
  * Results:
  *	None.
@@ -7285,47 +8090,47 @@ UpdateInterest(chanPtr)
  */
 
 static void
-ChannelTimerProc(clientData)
-    ClientData clientData;
+ChannelTimerProc(
+    ClientData clientData)
 {
-    Channel *chanPtr = (Channel *) clientData;
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    Channel *chanPtr = clientData;
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
 
     if (!(statePtr->flags & CHANNEL_NEED_MORE_DATA)
 	    && (statePtr->interestMask & TCL_READABLE)
-	    && (statePtr->inQueueHead != (ChannelBuffer *) NULL)
-	    && (statePtr->inQueueHead->nextRemoved <
-		    statePtr->inQueueHead->nextAdded)) {
+	    && (statePtr->inQueueHead != NULL)
+	    && IsBufferReady(statePtr->inQueueHead)) {
 	/*
-	 * Restart the timer in case a channel handler reenters the
-	 * event loop before UpdateInterest gets called by Tcl_NotifyChannel.
+	 * Restart the timer in case a channel handler reenters the event loop
+	 * before UpdateInterest gets called by Tcl_NotifyChannel.
 	 */
 
-	statePtr->timer = Tcl_CreateTimerHandler(0, ChannelTimerProc,
-		(ClientData) chanPtr);
+	statePtr->timer = Tcl_CreateTimerHandler(0, ChannelTimerProc,chanPtr);
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-	/* Set the TIMER flag to notify the higher levels that the
-	 * driver might have no data for us. We do this only if we are
-	 * in non-blocking mode and the driver has no BlockModeProc
-	 * because only then we really don't know if the driver will
-	 * block or not. A similar test is done in "PeekAhead".
+	/*
+	 * Set the TIMER flag to notify the higher levels that the driver
+	 * might have no data for us. We do this only if we are in
+	 * non-blocking mode and the driver has no BlockModeProc because only
+	 * then we really don't know if the driver will block or not. A
+	 * similar test is done in "PeekAhead".
 	 */
 
 	if ((statePtr->flags & CHANNEL_NONBLOCKING) &&
 	    (Tcl_ChannelBlockModeProc(chanPtr->typePtr) == NULL)) {
-	    statePtr->flags |= CHANNEL_TIMER_FEV;
+	    SetFlag(statePtr, CHANNEL_TIMER_FEV);
 	}
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
 
-	Tcl_Preserve((ClientData) statePtr);
+	Tcl_Preserve(statePtr);
 	Tcl_NotifyChannel((Tcl_Channel)chanPtr, TCL_READABLE);
 
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-	statePtr->flags &= ~CHANNEL_TIMER_FEV; 
+	ResetFlag(statePtr, CHANNEL_TIMER_FEV);
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
 
-	Tcl_Release((ClientData) statePtr);
+	Tcl_Release(statePtr);
     } else {
 	statePtr->timer = NULL;
 	UpdateInterest(chanPtr);
@@ -7337,80 +8142,75 @@ ChannelTimerProc(clientData)
  *
  * Tcl_CreateChannelHandler --
  *
- *	Arrange for a given procedure to be invoked whenever the
- *	channel indicated by the chanPtr arg becomes readable or
- *	writable.
+ *	Arrange for a given procedure to be invoked whenever the channel
+ *	indicated by the chanPtr arg becomes readable or writable.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	From now on, whenever the I/O channel given by chanPtr becomes
- *	ready in the way indicated by mask, proc will be invoked.
- *	See the manual entry for details on the calling sequence
- *	to proc.  If there is already an event handler for chan, proc
- *	and clientData, then the mask will be updated.
+ *	From now on, whenever the I/O channel given by chanPtr becomes ready
+ *	in the way indicated by mask, proc will be invoked. See the manual
+ *	entry for details on the calling sequence to proc. If there is already
+ *	an event handler for chan, proc and clientData, then the mask will be
+ *	updated.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_CreateChannelHandler(chan, mask, proc, clientData)
-    Tcl_Channel chan;		/* The channel to create the handler for. */
-    int mask;			/* OR'ed combination of TCL_READABLE,
-				 * TCL_WRITABLE, and TCL_EXCEPTION:
-				 * indicates conditions under which
-				 * proc should be called. Use 0 to
-                                 * disable a registered handler. */
-    Tcl_ChannelProc *proc;	/* Procedure to call for each
-				 * selected event. */
-    ClientData clientData;	/* Arbitrary data to pass to proc. */
+Tcl_CreateChannelHandler(
+    Tcl_Channel chan,		/* The channel to create the handler for. */
+    int mask,			/* OR'ed combination of TCL_READABLE,
+				 * TCL_WRITABLE, and TCL_EXCEPTION: indicates
+				 * conditions under which proc should be
+				 * called. Use 0 to disable a registered
+				 * handler. */
+    Tcl_ChannelProc *proc,	/* Procedure to call for each selected
+				 * event. */
+    ClientData clientData)	/* Arbitrary data to pass to proc. */
 {
     ChannelHandler *chPtr;
     Channel *chanPtr = (Channel *) chan;
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
 
     /*
-     * Check whether this channel handler is not already registered. If
-     * it is not, create a new record, else reuse existing record (smash
-     * current values).
+     * Check whether this channel handler is not already registered. If it is
+     * not, create a new record, else reuse existing record (smash current
+     * values).
      */
 
-    for (chPtr = statePtr->chPtr;
-	 chPtr != (ChannelHandler *) NULL;
-	 chPtr = chPtr->nextPtr) {
-        if ((chPtr->chanPtr == chanPtr) && (chPtr->proc == proc) &&
-                (chPtr->clientData == clientData)) {
-            break;
-        }
+    for (chPtr = statePtr->chPtr; chPtr != NULL; chPtr = chPtr->nextPtr) {
+	if ((chPtr->chanPtr == chanPtr) && (chPtr->proc == proc) &&
+		(chPtr->clientData == clientData)) {
+	    break;
+	}
     }
-    if (chPtr == (ChannelHandler *) NULL) {
-        chPtr = (ChannelHandler *) ckalloc((unsigned) sizeof(ChannelHandler));
-        chPtr->mask = 0;
-        chPtr->proc = proc;
-        chPtr->clientData = clientData;
-        chPtr->chanPtr = chanPtr;
-        chPtr->nextPtr = statePtr->chPtr;
-        statePtr->chPtr = chPtr;
+    if (chPtr == NULL) {
+	chPtr = (ChannelHandler *) ckalloc(sizeof(ChannelHandler));
+	chPtr->mask = 0;
+	chPtr->proc = proc;
+	chPtr->clientData = clientData;
+	chPtr->chanPtr = chanPtr;
+	chPtr->nextPtr = statePtr->chPtr;
+	statePtr->chPtr = chPtr;
     }
 
     /*
-     * The remainder of the initialization below is done regardless of
-     * whether or not this is a new record or a modification of an old
-     * one.
+     * The remainder of the initialization below is done regardless of whether
+     * or not this is a new record or a modification of an old one.
      */
 
     chPtr->mask = mask;
 
     /*
-     * Recompute the interest mask for the channel - this call may actually
-     * be disabling an existing handler.
+     * Recompute the interest mask for the channel - this call may actually be
+     * disabling an existing handler.
      */
-    
+
     statePtr->interestMask = 0;
-    for (chPtr = statePtr->chPtr;
-	 chPtr != (ChannelHandler *) NULL;
-	 chPtr = chPtr->nextPtr) {
+    for (chPtr = statePtr->chPtr; chPtr != NULL; chPtr = chPtr->nextPtr) {
 	statePtr->interestMask |= chPtr->mask;
     }
 
@@ -7422,55 +8222,53 @@ Tcl_CreateChannelHandler(chan, mask, proc, clientData)
  *
  * Tcl_DeleteChannelHandler --
  *
- *	Cancel a previously arranged callback arrangement for an IO
- *	channel.
+ *	Cancel a previously arranged callback arrangement for an IO channel.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	If a callback was previously registered for this chan, proc and
- *	 clientData , it is removed and the callback will no longer be called
+ *	clientData, it is removed and the callback will no longer be called
  *	when the channel becomes ready for IO.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteChannelHandler(chan, proc, clientData)
-    Tcl_Channel chan;		/* The channel for which to remove the
-                                 * callback. */
-    Tcl_ChannelProc *proc;	/* The procedure in the callback to delete. */
-    ClientData clientData;	/* The client data in the callback
-                                 * to delete. */
-    
+Tcl_DeleteChannelHandler(
+    Tcl_Channel chan,		/* The channel for which to remove the
+				 * callback. */
+    Tcl_ChannelProc *proc,	/* The procedure in the callback to delete. */
+    ClientData clientData)	/* The client data in the callback to
+				 * delete. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     ChannelHandler *chPtr, *prevChPtr;
     Channel *chanPtr = (Channel *) chan;
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     NextChannelHandler *nhPtr;
 
     /*
      * Find the entry and the previous one in the list.
      */
 
-    for (prevChPtr = (ChannelHandler *) NULL, chPtr = statePtr->chPtr;
-	 chPtr != (ChannelHandler *) NULL;
-	 chPtr = chPtr->nextPtr) {
-        if ((chPtr->chanPtr == chanPtr) && (chPtr->clientData == clientData)
-                && (chPtr->proc == proc)) {
-            break;
-        }
-        prevChPtr = chPtr;
+    for (prevChPtr = NULL, chPtr = statePtr->chPtr; chPtr != NULL;
+	    chPtr = chPtr->nextPtr) {
+	if ((chPtr->chanPtr == chanPtr) && (chPtr->clientData == clientData)
+		&& (chPtr->proc == proc)) {
+	    break;
+	}
+	prevChPtr = chPtr;
     }
 
     /*
      * If not found, return without doing anything.
      */
 
-    if (chPtr == (ChannelHandler *) NULL) {
-        return;
+    if (chPtr == NULL) {
+	return;
     }
 
     /*
@@ -7478,36 +8276,32 @@ Tcl_DeleteChannelHandler(chan, proc, clientData)
      * process the next one instead - we are going to delete *this* one.
      */
 
-    for (nhPtr = tsdPtr->nestedHandlerPtr;
-	 nhPtr != (NextChannelHandler *) NULL;
-	 nhPtr = nhPtr->nestedHandlerPtr) {
-        if (nhPtr->nextHandlerPtr == chPtr) {
-            nhPtr->nextHandlerPtr = chPtr->nextPtr;
-        }
+    for (nhPtr = tsdPtr->nestedHandlerPtr; nhPtr != NULL;
+	    nhPtr = nhPtr->nestedHandlerPtr) {
+	if (nhPtr->nextHandlerPtr == chPtr) {
+	    nhPtr->nextHandlerPtr = chPtr->nextPtr;
+	}
     }
 
     /*
      * Splice it out of the list of channel handlers.
      */
-    
-    if (prevChPtr == (ChannelHandler *) NULL) {
-        statePtr->chPtr = chPtr->nextPtr;
+
+    if (prevChPtr == NULL) {
+	statePtr->chPtr = chPtr->nextPtr;
     } else {
-        prevChPtr->nextPtr = chPtr->nextPtr;
+	prevChPtr->nextPtr = chPtr->nextPtr;
     }
     ckfree((char *) chPtr);
 
     /*
      * Recompute the interest list for the channel, so that infinite loops
-     * will not result if Tcl_DeleteChannelHandler is called inside an
-     * event.
+     * will not result if Tcl_DeleteChannelHandler is called inside an event.
      */
 
     statePtr->interestMask = 0;
-    for (chPtr = statePtr->chPtr;
-	 chPtr != (ChannelHandler *) NULL;
-	 chPtr = chPtr->nextPtr) {
-        statePtr->interestMask |= chPtr->mask;
+    for (chPtr = statePtr->chPtr; chPtr != NULL; chPtr = chPtr->nextPtr) {
+	statePtr->interestMask |= chPtr->mask;
     }
 
     UpdateInterest(statePtr->topChanPtr);
@@ -7518,8 +8312,8 @@ Tcl_DeleteChannelHandler(chan, proc, clientData)
  *
  * DeleteScriptRecord --
  *
- *	Delete a script record for this combination of channel, interp
- *	and mask.
+ *	Delete a script record for this combination of channel, interp and
+ *	mask.
  *
  * Results:
  *	None.
@@ -7531,36 +8325,35 @@ Tcl_DeleteChannelHandler(chan, proc, clientData)
  */
 
 static void
-DeleteScriptRecord(interp, chanPtr, mask)
-    Tcl_Interp *interp;		/* Interpreter in which script was to be
-                                 * executed. */
-    Channel *chanPtr;		/* The channel for which to delete the
-                                 * script record (if any). */
-    int mask;			/* Events in mask must exactly match mask
-                                 * of script to delete. */
-{
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+DeleteScriptRecord(
+    Tcl_Interp *interp,		/* Interpreter in which script was to be
+				 * executed. */
+    Channel *chanPtr,		/* The channel for which to delete the script
+				 * record (if any). */
+    int mask)			/* Events in mask must exactly match mask of
+				 * script to delete. */
+{
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     EventScriptRecord *esPtr, *prevEsPtr;
 
-    for (esPtr = statePtr->scriptRecordPtr,
-             prevEsPtr = (EventScriptRecord *) NULL;
-	 esPtr != (EventScriptRecord *) NULL;
-	 prevEsPtr = esPtr, esPtr = esPtr->nextPtr) {
-        if ((esPtr->interp == interp) && (esPtr->mask == mask)) {
-            if (esPtr == statePtr->scriptRecordPtr) {
-                statePtr->scriptRecordPtr = esPtr->nextPtr;
-            } else {
-                prevEsPtr->nextPtr = esPtr->nextPtr;
-            }
+    for (esPtr = statePtr->scriptRecordPtr, prevEsPtr = NULL; esPtr != NULL;
+	    prevEsPtr = esPtr, esPtr = esPtr->nextPtr) {
+	if ((esPtr->interp == interp) && (esPtr->mask == mask)) {
+	    if (esPtr == statePtr->scriptRecordPtr) {
+		statePtr->scriptRecordPtr = esPtr->nextPtr;
+	    } else {
+		prevEsPtr->nextPtr = esPtr->nextPtr;
+	    }
+
+	    Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
+		    TclChannelEventScriptInvoker, esPtr);
 
-            Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
-                    TclChannelEventScriptInvoker, (ClientData) esPtr);
-            
-	    Tcl_DecrRefCount(esPtr->scriptPtr);
-            ckfree((char *) esPtr);
+	    TclDecrRefCount(esPtr->scriptPtr);
+	    ckfree((char *) esPtr);
 
-            break;
-        }
+	    break;
+	}
     }
 }
 
@@ -7582,40 +8375,54 @@ DeleteScriptRecord(interp, chanPtr, mask)
  */
 
 static void
-CreateScriptRecord(interp, chanPtr, mask, scriptPtr)
-    Tcl_Interp *interp;			/* Interpreter in which to execute
-                                         * the stored script. */
-    Channel *chanPtr;			/* Channel for which script is to
-                                         * be stored. */
-    int mask;				/* Set of events for which script
-                                         * will be invoked. */
-    Tcl_Obj *scriptPtr;			/* Pointer to script object. */
-{
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
+CreateScriptRecord(
+    Tcl_Interp *interp,		/* Interpreter in which to execute the stored
+				 * script. */
+    Channel *chanPtr,		/* Channel for which script is to be stored */
+    int mask,			/* Set of events for which script will be
+				 * invoked. */
+    Tcl_Obj *scriptPtr)		/* Pointer to script object. */
+{
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
     EventScriptRecord *esPtr;
+    int makeCH;
 
-    for (esPtr = statePtr->scriptRecordPtr;
-	 esPtr != (EventScriptRecord *) NULL;
-	 esPtr = esPtr->nextPtr) {
-        if ((esPtr->interp == interp) && (esPtr->mask == mask)) {
-	    Tcl_DecrRefCount(esPtr->scriptPtr);
-	    esPtr->scriptPtr = (Tcl_Obj *) NULL;
-            break;
-        }
-    }
-    if (esPtr == (EventScriptRecord *) NULL) {
-        esPtr = (EventScriptRecord *) ckalloc((unsigned)
-                sizeof(EventScriptRecord));
-        Tcl_CreateChannelHandler((Tcl_Channel) chanPtr, mask,
-                TclChannelEventScriptInvoker, (ClientData) esPtr);
-        esPtr->nextPtr = statePtr->scriptRecordPtr;
-        statePtr->scriptRecordPtr = esPtr;
+    for (esPtr=statePtr->scriptRecordPtr; esPtr!=NULL; esPtr=esPtr->nextPtr) {
+	if ((esPtr->interp == interp) && (esPtr->mask == mask)) {
+	    TclDecrRefCount(esPtr->scriptPtr);
+	    esPtr->scriptPtr = NULL;
+	    break;
+	}
     }
+
+    makeCH = (esPtr == NULL);
+
+    if (makeCH) {
+	esPtr = (EventScriptRecord *) ckalloc(sizeof(EventScriptRecord));
+    }
+
+    /*
+     * Initialize the structure before calling Tcl_CreateChannelHandler,
+     * because a reflected channel caling 'chan postevent' aka
+     * 'Tcl_NotifyChannel' in its 'watch'Proc will invoke
+     * 'TclChannelEventScriptInvoker' immediately, and we do not wish it to
+     * see uninitialized memory and crash. See [Bug 2918110].
+     */
+
     esPtr->chanPtr = chanPtr;
     esPtr->interp = interp;
     esPtr->mask = mask;
     Tcl_IncrRefCount(scriptPtr);
     esPtr->scriptPtr = scriptPtr;
+
+    if (makeCH) {
+	esPtr->nextPtr = statePtr->scriptRecordPtr;
+	statePtr->scriptRecordPtr = esPtr;
+
+	Tcl_CreateChannelHandler((Tcl_Channel) chanPtr, mask,
+		TclChannelEventScriptInvoker, esPtr);
+    }
 }
 
 /*
@@ -7623,9 +8430,9 @@ CreateScriptRecord(interp, chanPtr, mask, scriptPtr)
  *
  * TclChannelEventScriptInvoker --
  *
- *	Invokes a script scheduled by "fileevent" for when the channel
- *	becomes ready for IO. This function is invoked by the channel
- *	handler which was created by the Tcl "fileevent" command.
+ *	Invokes a script scheduled by "fileevent" for when the channel becomes
+ *	ready for IO. This function is invoked by the channel handler which
+ *	was created by the Tcl "fileevent" command.
  *
  * Results:
  *	None.
@@ -7637,48 +8444,48 @@ CreateScriptRecord(interp, chanPtr, mask, scriptPtr)
  */
 
 void
-TclChannelEventScriptInvoker(clientData, mask)
-    ClientData clientData;	/* The script+interp record. */
-    int mask;			/* Not used. */
+TclChannelEventScriptInvoker(
+    ClientData clientData,	/* The script+interp record. */
+    int mask)			/* Not used. */
 {
     Tcl_Interp *interp;		/* Interpreter in which to eval the script. */
     Channel *chanPtr;		/* The channel for which this handler is
-                                 * registered. */
+				 * registered. */
     EventScriptRecord *esPtr;	/* The event script + interpreter to eval it
-                                 * in. */
+				 * in. */
     int result;			/* Result of call to eval script. */
 
-    esPtr	= (EventScriptRecord *) clientData;
-    chanPtr	= esPtr->chanPtr;
-    mask	= esPtr->mask;
-    interp	= esPtr->interp;
+    esPtr = clientData;
+    chanPtr = esPtr->chanPtr;
+    mask = esPtr->mask;
+    interp = esPtr->interp;
 
     /*
-     * We must preserve the interpreter so we can report errors on it
-     * later.  Note that we do not need to preserve the channel because
-     * that is done by Tcl_NotifyChannel before calling channel handlers.
+     * We must preserve the interpreter so we can report errors on it later.
+     * Note that we do not need to preserve the channel because that is done
+     * by Tcl_NotifyChannel before calling channel handlers.
      */
-    
-    Tcl_Preserve((ClientData) interp);
-    Tcl_Preserve((ClientData) chanPtr);
+
+    Tcl_Preserve(interp);
+    Tcl_Preserve(chanPtr);
     result = Tcl_EvalObjEx(interp, esPtr->scriptPtr, TCL_EVAL_GLOBAL);
 
     /*
-     * On error, cause a background error and remove the channel handler
-     * and the script record.
+     * On error, cause a background error and remove the channel handler and
+     * the script record.
      *
      * NOTE: Must delete channel handler before causing the background error
      * because the background error may want to reinstall the handler.
      */
-    
+
     if (result != TCL_OK) {
 	if (chanPtr->typePtr != NULL) {
 	    DeleteScriptRecord(interp, chanPtr, mask);
 	}
-        Tcl_BackgroundError(interp);
+	TclBackgroundException(interp, result);
     }
-    Tcl_Release((ClientData) chanPtr);
-    Tcl_Release((ClientData) interp);
+    Tcl_Release(chanPtr);
+    Tcl_Release(interp);
 }
 
 /*
@@ -7686,10 +8493,10 @@ TclChannelEventScriptInvoker(clientData, mask)
  *
  * Tcl_FileEventObjCmd --
  *
- *	This procedure implements the "fileevent" Tcl command. See the
- *	user documentation for details on what it does. This command is
- *	based on the Tk command "fileevent" which in turn is based on work
- *	contributed by Mark Diekhans.
+ *	This procedure implements the "fileevent" Tcl command. See the user
+ *	documentation for details on what it does. This command is based on
+ *	the Tk command "fileevent" which in turn is based on work contributed
+ *	by Mark Diekhans.
  *
  * Results:
  *	A standard Tcl result.
@@ -7702,22 +8509,20 @@ TclChannelEventScriptInvoker(clientData, mask)
 
 	/* ARGSUSED */
 int
-Tcl_FileEventObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Interpreter in which the channel
-                                         * for which to create the handler
-                                         * is found. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
-{
-    Channel *chanPtr;			/* The channel to create
-                                         * the handler for. */
-    ChannelState *statePtr;		/* state info for channel */
-    Tcl_Channel chan;			/* The opaque type for the channel. */
+Tcl_FileEventObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Interpreter in which the channel for which
+				 * to create the handler is found. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Channel *chanPtr;		/* The channel to create the handler for. */
+    ChannelState *statePtr;	/* State info for channel */
+    Tcl_Channel chan;		/* The opaque type for the channel. */
     char *chanName;
-    int modeIndex;			/* Index of mode argument. */
+    int modeIndex;		/* Index of mode argument. */
     int mask;
-    static CONST char *modeOptions[] = {"readable", "writable", NULL};
+    static const char *modeOptions[] = {"readable", "writable", NULL};
     static CONST int maskArray[] = {TCL_READABLE, TCL_WRITABLE};
 
     if ((objc != 3) && (objc != 4)) {
@@ -7730,85 +8535,110 @@ Tcl_FileEventObjCmd(clientData, interp, objc, objv)
     }
     mask = maskArray[modeIndex];
 
-    chanName = Tcl_GetString(objv[1]);
+    chanName = TclGetString(objv[1]);
     chan = Tcl_GetChannel(interp, chanName, NULL);
-    if (chan == (Tcl_Channel) NULL) {
+    if (chan == NULL) {
 	return TCL_ERROR;
     }
-    chanPtr  = (Channel *) chan;
+    chanPtr = (Channel *) chan;
     statePtr = chanPtr->state;
     if ((statePtr->flags & mask) == 0) {
-        Tcl_AppendResult(interp, "channel is not ",
-                (mask == TCL_READABLE) ? "readable" : "writable",
-                (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel is not ",
+		(mask == TCL_READABLE) ? "readable" : "writable", NULL);
+	return TCL_ERROR;
     }
-    
+
     /*
      * If we are supposed to return the script, do so.
      */
 
     if (objc == 3) {
 	EventScriptRecord *esPtr;
-	for (esPtr = statePtr->scriptRecordPtr;
-             esPtr != (EventScriptRecord *) NULL;
-             esPtr = esPtr->nextPtr) {
+	for (esPtr = statePtr->scriptRecordPtr; esPtr != NULL;
+		esPtr = esPtr->nextPtr) {
 	    if ((esPtr->interp == interp) && (esPtr->mask == mask)) {
 		Tcl_SetObjResult(interp, esPtr->scriptPtr);
 		break;
 	    }
 	}
-        return TCL_OK;
+	return TCL_OK;
     }
 
     /*
      * If we are supposed to delete a stored script, do so.
      */
 
-    if (*(Tcl_GetString(objv[3])) == '\0') {
-        DeleteScriptRecord(interp, chanPtr, mask);
-        return TCL_OK;
+    if (*(TclGetString(objv[3])) == '\0') {
+	DeleteScriptRecord(interp, chanPtr, mask);
+	return TCL_OK;
     }
 
     /*
-     * Make the script record that will link between the event and the
-     * script to invoke. This also creates a channel event handler which
-     * will evaluate the script in the supplied interpreter.
+     * Make the script record that will link between the event and the script
+     * to invoke. This also creates a channel event handler which will
+     * evaluate the script in the supplied interpreter.
      */
 
     CreateScriptRecord(interp, chanPtr, mask, objv[3]);
-    
+
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
+ * ZeroTransferTimerProc --
+ *
+ *	Timer handler scheduled by TclCopyChannel so that -command is
+ *	called asynchronously even when -size is 0.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Calls CopyData for -command invocation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ZeroTransferTimerProc(
+    ClientData clientData)
+{
+    /* calling CopyData with mask==0 still implies immediate invocation of the
+     *  -command callback, and completion of the fcopy.
+     */
+    CopyData(clientData, 0);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TclCopyChannel --
  *
  *	This routine copies data from one channel to another, either
- *	synchronously or asynchronously.  If a command script is
- *	supplied, the operation runs in the background.  The script
- *	is invoked when the copy completes.  Otherwise the function
- *	waits until the copy is completed before returning.
+ *	synchronously or asynchronously. If a command script is supplied, the
+ *	operation runs in the background. The script is invoked when the copy
+ *	completes. Otherwise the function waits until the copy is completed
+ *	before returning.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	May schedule a background copy operation that causes both
- *	channels to be marked busy.
+ *	May schedule a background copy operation that causes both channels to
+ *	be marked busy.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr)
-    Tcl_Interp *interp;		/* Current interpreter. */
-    Tcl_Channel inChan;		/* Channel to read from. */
-    Tcl_Channel outChan;	/* Channel to write to. */
-    int toRead;			/* Amount of data to copy, or -1 for all. */
-    Tcl_Obj *cmdPtr;		/* Pointer to script to execute or NULL. */
+TclCopyChannel(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Channel inChan,		/* Channel to read from. */
+    Tcl_Channel outChan,	/* Channel to write to. */
+    int toRead,			/* Amount of data to copy, or -1 for all. */
+    Tcl_Obj *cmdPtr)		/* Pointer to script to execute or NULL. */
 {
     Channel *inPtr = (Channel *) inChan;
     Channel *outPtr = (Channel *) outChan;
@@ -7817,53 +8647,46 @@ TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr)
     CopyState *csPtr;
     int nonBlocking = (cmdPtr) ? CHANNEL_NONBLOCKING : 0;
 
-    inStatePtr	= inPtr->state;
-    outStatePtr	= outPtr->state;
+    inStatePtr = inPtr->state;
+    outStatePtr = outPtr->state;
 
     if (BUSY_STATE(inStatePtr,TCL_READABLE)) {
 	if (interp) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
+	    Tcl_AppendResult(interp, "channel \"",
 		    Tcl_GetChannelName(inChan), "\" is busy", NULL);
 	}
 	return TCL_ERROR;
     }
     if (BUSY_STATE(outStatePtr,TCL_WRITABLE)) {
 	if (interp) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
+	    Tcl_AppendResult(interp, "channel \"",
 		    Tcl_GetChannelName(outChan), "\" is busy", NULL);
 	}
 	return TCL_ERROR;
     }
 
-    readFlags	= inStatePtr->flags;
-    writeFlags	= outStatePtr->flags;
+    readFlags = inStatePtr->flags;
+    writeFlags = outStatePtr->flags;
 
     /*
-     * Set up the blocking mode appropriately.  Background copies need
-     * non-blocking channels.  Foreground copies need blocking channels.
-     * If there is an error, restore the old blocking mode.
+     * Set up the blocking mode appropriately. Background copies need
+     * non-blocking channels. Foreground copies need blocking channels. If
+     * there is an error, restore the old blocking mode.
      */
 
     if (nonBlocking != (readFlags & CHANNEL_NONBLOCKING)) {
-	if (SetBlockMode(interp, inPtr,
-		nonBlocking ? TCL_MODE_NONBLOCKING : TCL_MODE_BLOCKING)
-		!= TCL_OK) {
+	if (SetBlockMode(interp, inPtr, nonBlocking ?
+		TCL_MODE_NONBLOCKING : TCL_MODE_BLOCKING) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-    }	    
-    if (inPtr != outPtr) {
-	if (nonBlocking != (writeFlags & CHANNEL_NONBLOCKING)) {
-	    if (SetBlockMode(NULL, outPtr,
-		    nonBlocking ? TCL_MODE_NONBLOCKING : TCL_MODE_BLOCKING)
-		    != TCL_OK) {
-		if (nonBlocking != (readFlags & CHANNEL_NONBLOCKING)) {
-		    SetBlockMode(NULL, inPtr,
-			    (readFlags & CHANNEL_NONBLOCKING)
-			    ? TCL_MODE_NONBLOCKING : TCL_MODE_BLOCKING);
-		    return TCL_ERROR;
-		}
-	    }
-	}
+    }
+    if ((inPtr!=outPtr) && (nonBlocking!=(writeFlags&CHANNEL_NONBLOCKING)) &&
+	    (SetBlockMode(NULL, outPtr, nonBlocking ?
+		    TCL_MODE_NONBLOCKING : TCL_MODE_BLOCKING) != TCL_OK) &&
+	    (nonBlocking != (readFlags & CHANNEL_NONBLOCKING))) {
+	SetBlockMode(NULL, inPtr, (readFlags & CHANNEL_NONBLOCKING)
+		? TCL_MODE_NONBLOCKING : TCL_MODE_BLOCKING);
+	return TCL_ERROR;
     }
 
     /*
@@ -7875,19 +8698,19 @@ TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr)
 
     /*
      * Allocate a new CopyState to maintain info about the current copy in
-     * progress.  This structure will be deallocated when the copy is
+     * progress. This structure will be deallocated when the copy is
      * completed.
      */
 
-    csPtr = (CopyState*) ckalloc(sizeof(CopyState) + inStatePtr->bufSize);
-    csPtr->bufSize    = inStatePtr->bufSize;
-    csPtr->readPtr    = inPtr;
-    csPtr->writePtr   = outPtr;
-    csPtr->readFlags  = readFlags;
+    csPtr = (CopyState *) ckalloc(sizeof(CopyState) + inStatePtr->bufSize);
+    csPtr->bufSize = inStatePtr->bufSize;
+    csPtr->readPtr = inPtr;
+    csPtr->writePtr = outPtr;
+    csPtr->readFlags = readFlags;
     csPtr->writeFlags = writeFlags;
-    csPtr->toRead     = toRead;
-    csPtr->total      = 0;
-    csPtr->interp     = interp;
+    csPtr->toRead = toRead;
+    csPtr->total = 0;
+    csPtr->interp = interp;
     if (cmdPtr) {
 	Tcl_IncrRefCount(cmdPtr);
     }
@@ -7897,6 +8720,16 @@ TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr)
     outStatePtr->csPtrW = csPtr;
 
     /*
+     * Special handling of -size 0 async transfers, so that the -command is
+     * still called asynchronously.
+     */
+
+    if ((nonBlocking == CHANNEL_NONBLOCKING) && (toRead == 0)) {
+        Tcl_CreateTimerHandler(0, ZeroTransferTimerProc, csPtr);
+        return 0;
+    }
+
+    /*
      * Start copying data between the channels.
      */
 
@@ -7908,8 +8741,8 @@ TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr)
  *
  * CopyData --
  *
- *	This function implements the lowest level of the copying
- *	mechanism for TclCopyChannel.
+ *	This function implements the lowest level of the copying mechanism for
+ *	TclCopyChannel.
  *
  * Results:
  *	Returns TCL_OK on success, else TCL_ERROR.
@@ -7921,19 +8754,20 @@ TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr)
  */
 
 static int
-CopyData(csPtr, mask)
-    CopyState *csPtr;		/* State of copy operation. */
-    int mask;			/* Current channel event flags. */
+CopyData(
+    CopyState *csPtr,		/* State of copy operation. */
+    int mask)			/* Current channel event flags. */
 {
     Tcl_Interp *interp;
-    Tcl_Obj *cmdPtr, *errObj = NULL, *bufObj = NULL;
+    Tcl_Obj *cmdPtr, *errObj = NULL, *bufObj = NULL, *msg = NULL;
     Tcl_Channel inChan, outChan;
     ChannelState *inStatePtr, *outStatePtr;
-    int result = TCL_OK, size, total, sizeb;
-    char* buffer;
-
-    int inBinary, outBinary, sameEncoding; /* Encoding control */
-    int underflow;	/* input underflow */
+    int result = TCL_OK, size, sizeb;
+    Tcl_WideInt total;
+    char *buffer;
+    int inBinary, outBinary, sameEncoding;
+				/* Encoding control */
+    int underflow;		/* Input underflow */
 
     inChan	= (Tcl_Channel) csPtr->readPtr;
     outChan	= (Tcl_Channel) csPtr->writePtr;
@@ -7945,18 +8779,18 @@ CopyData(csPtr, mask)
     /*
      * Copy the data the slow way, using the translation mechanism.
      *
-     * Note: We have make sure that we use the topmost channel in a stack
-     * for the copying. The caller uses Tcl_GetChannel to access it, and
-     * thus gets the bottom of the stack.
+     * Note: We have make sure that we use the topmost channel in a stack for
+     * the copying. The caller uses Tcl_GetChannel to access it, and thus gets
+     * the bottom of the stack.
      */
 
-    inBinary     = (inStatePtr->encoding  == NULL);
-    outBinary    = (outStatePtr->encoding == NULL);
-    sameEncoding = (inStatePtr->encoding  == outStatePtr->encoding);
+    inBinary = (inStatePtr->encoding == NULL);
+    outBinary = (outStatePtr->encoding == NULL);
+    sameEncoding = (inStatePtr->encoding == outStatePtr->encoding);
 
     if (!(inBinary || sameEncoding)) {
-        bufObj = Tcl_NewObj ();
-	Tcl_IncrRefCount (bufObj);
+	TclNewObj(bufObj);
+	Tcl_IncrRefCount(bufObj);
     }
 
     while (csPtr->toRead != 0) {
@@ -7964,17 +8798,19 @@ CopyData(csPtr, mask)
 	 * Check for unreported background errors.
 	 */
 
-	if (inStatePtr->unreportedError != 0) {
+	Tcl_GetChannelError(inChan, &msg);
+	if ((inStatePtr->unreportedError != 0) || (msg != NULL)) {
 	    Tcl_SetErrno(inStatePtr->unreportedError);
 	    inStatePtr->unreportedError = 0;
 	    goto readError;
 	}
-	if (outStatePtr->unreportedError != 0) {
+	Tcl_GetChannelError(outChan, &msg);
+	if ((outStatePtr->unreportedError != 0) || (msg != NULL)) {
 	    Tcl_SetErrno(outStatePtr->unreportedError);
 	    outStatePtr->unreportedError = 0;
 	    goto writeError;
 	}
-	
+
 	if (cmdPtr && (mask == 0)) {
 	    /*
 	     * In async mode, we skip reading synchronously and fake an
@@ -7989,51 +8825,60 @@ CopyData(csPtr, mask)
 	     */
 
 	    if ((csPtr->toRead == -1) || (csPtr->toRead > csPtr->bufSize)) {
-	        sizeb = csPtr->bufSize;
+		sizeb = csPtr->bufSize;
 	    } else {
-	        sizeb = csPtr->toRead;
+		sizeb = csPtr->toRead;
 	    }
 
 	    if (inBinary || sameEncoding) {
-	        size = DoRead(inStatePtr->topChanPtr, csPtr->buffer, sizeb);
+		size = DoRead(inStatePtr->topChanPtr, csPtr->buffer, sizeb);
 	    } else {
-	        size = DoReadChars(inStatePtr->topChanPtr, bufObj, sizeb, 0 /* No append */);
+		size = DoReadChars(inStatePtr->topChanPtr, bufObj, sizeb,
+				   0 /* No append */);
 	    }
-	    underflow = (size >= 0) && (size < sizeb);	/* input underflow */
+	    underflow = (size >= 0) && (size < sizeb);	/* Input underflow */
 	}
 
 	if (size < 0) {
-	    readError:
-	    errObj = Tcl_NewObj();
-	    Tcl_AppendStringsToObj(errObj, "error reading \"",
-		    Tcl_GetChannelName(inChan), "\": ",
-		    Tcl_PosixError(interp), (char *) NULL);
+	readError:
+	    if (interp) {
+		TclNewObj(errObj);
+		Tcl_AppendStringsToObj(errObj, "error reading \"",
+			Tcl_GetChannelName(inChan), "\": ", NULL);
+		if (msg != NULL) {
+		    Tcl_AppendObjToObj(errObj, msg);
+		} else {
+		    Tcl_AppendStringsToObj(errObj, Tcl_PosixError(interp),
+			    NULL);
+		}
+	    }
+	    if (msg != NULL) {
+		Tcl_DecrRefCount(msg);
+	    }
 	    break;
 	} else if (underflow) {
 	    /*
-	     * We had an underflow on the read side.  If we are at
-	     * EOF, and not in the synchronous part of an asynchronous
-	     * fcopy, then the copying is done, otherwise set up a
-	     * channel handler to detect when the channel becomes
-	     * readable again.
+	     * We had an underflow on the read side. If we are at EOF, and not
+	     * in the synchronous part of an asynchronous fcopy, then the
+	     * copying is done, otherwise set up a channel handler to detect
+	     * when the channel becomes readable again.
 	     */
-	    
+
 	    if ((size == 0) && Tcl_Eof(inChan) && !(cmdPtr && (mask == 0))) {
 		break;
 	    }
 	    if (((!Tcl_Eof(inChan)) || (cmdPtr && (mask == 0))) &&
 		!(mask & TCL_READABLE)) {
 		if (mask & TCL_WRITABLE) {
-		    Tcl_DeleteChannelHandler(outChan, CopyEventProc,
-			    (ClientData) csPtr);
+		    Tcl_DeleteChannelHandler(outChan, CopyEventProc, csPtr);
 		}
-		Tcl_CreateChannelHandler(inChan, TCL_READABLE,
-			CopyEventProc, (ClientData) csPtr);
+		Tcl_CreateChannelHandler(inChan, TCL_READABLE, CopyEventProc,
+			csPtr);
 	    }
 	    if (size == 0) {
-	        if (bufObj != (Tcl_Obj*) NULL) {
-		    Tcl_DecrRefCount (bufObj);
-		    bufObj = (Tcl_Obj*) NULL;
+		if (bufObj != NULL) {
+		    TclDecrRefCount(bufObj);
+		    bufObj = NULL;
 		}
 		return TCL_OK;
 	    }
@@ -8047,7 +8892,7 @@ CopyData(csPtr, mask)
 	    buffer = csPtr->buffer;
 	    sizeb = size;
 	} else {
-	    buffer = Tcl_GetStringFromObj (bufObj, &sizeb);
+	    buffer = TclGetStringFromObj(bufObj, &sizeb);
 	}
 
 	if (outBinary || sameEncoding) {
@@ -8069,19 +8914,29 @@ CopyData(csPtr, mask)
 	 */
 
 	if (sizeb < 0) {
-	    writeError:
-	    errObj = Tcl_NewObj();
-	    Tcl_AppendStringsToObj(errObj, "error writing \"",
-		    Tcl_GetChannelName(outChan), "\": ",
-		    Tcl_PosixError(interp), (char *) NULL);
+	writeError:
+	    if (interp) {
+		TclNewObj(errObj);
+		Tcl_AppendStringsToObj(errObj, "error writing \"",
+			Tcl_GetChannelName(outChan), "\": ", NULL);
+		if (msg != NULL) {
+		    Tcl_AppendObjToObj(errObj, msg);
+		} else {
+		    Tcl_AppendStringsToObj(errObj, Tcl_PosixError(interp),
+			    NULL);
+		}
+	    }
+	    if (msg != NULL) {
+		Tcl_DecrRefCount(msg);
+	    }
 	    break;
 	}
 
 	/*
-	 * Update the current byte count.  Do it now so the count is
-	 * valid before a return or break takes us out of the loop.
-	 * The invariant at the top of the loop should be that 
-	 * csPtr->toRead holds the number of bytes left to copy.
+	 * (UP) Update the current byte count. Do it now so the count is valid
+	 * before a return or break takes us out of the loop. The invariant at
+	 * the top of the loop should be that csPtr->toRead holds the number
+	 * of bytes left to copy.
 	 */
 
 	if (csPtr->toRead != -1) {
@@ -8093,89 +8948,90 @@ CopyData(csPtr, mask)
 	 * Break loop if EOF && (size>0)
 	 */
 
-        if (Tcl_Eof(inChan)) {
-            break;
-        }
+	if (Tcl_Eof(inChan)) {
+	    break;
+	}
 
 	/*
-	 * Check to see if the write is happening in the background.  If so,
+	 * Check to see if the write is happening in the background. If so,
 	 * stop copying and wait for the channel to become writable again.
 	 * After input underflow we already installed a readable handler
 	 * therefore we don't need a writable handler.
 	 */
 
-	if ( ! underflow && (outStatePtr->flags & BG_FLUSH_SCHEDULED) ) {
+	if (!underflow && (outStatePtr->flags & BG_FLUSH_SCHEDULED)) {
 	    if (!(mask & TCL_WRITABLE)) {
 		if (mask & TCL_READABLE) {
-		    Tcl_DeleteChannelHandler(inChan, CopyEventProc,
-			    (ClientData) csPtr);
+		    Tcl_DeleteChannelHandler(inChan, CopyEventProc, csPtr);
 		}
 		Tcl_CreateChannelHandler(outChan, TCL_WRITABLE,
-			CopyEventProc, (ClientData) csPtr);
+			CopyEventProc, csPtr);
 	    }
-	    if (bufObj != (Tcl_Obj*) NULL) {
-	        Tcl_DecrRefCount (bufObj);
-		bufObj = (Tcl_Obj*) NULL;
+	    if (bufObj != NULL) {
+		TclDecrRefCount(bufObj);
+		bufObj = NULL;
 	    }
 	    return TCL_OK;
 	}
 
 	/*
-	 * For background copies, we only do one buffer per invocation so
-	 * we don't starve the rest of the system.
+	 * For background copies, we only do one buffer per invocation so we
+	 * don't starve the rest of the system.
 	 */
 
 	if (cmdPtr && (csPtr->toRead != 0)) {
 	    /*
-	     * The first time we enter this code, there won't be a
-	     * channel handler established yet, so do it here.
+	     * The first time we enter this code, there won't be a channel
+	     * handler established yet, so do it here.
 	     */
 
 	    if (mask == 0) {
-		Tcl_CreateChannelHandler(outChan, TCL_WRITABLE,
-			CopyEventProc, (ClientData) csPtr);
+		Tcl_CreateChannelHandler(outChan, TCL_WRITABLE, CopyEventProc,
+			csPtr);
 	    }
-	    if (bufObj != (Tcl_Obj*) NULL) {
-	        Tcl_DecrRefCount (bufObj);
-		bufObj = (Tcl_Obj*) NULL;
+	    if (bufObj != NULL) {
+		TclDecrRefCount(bufObj);
+		bufObj = NULL;
 	    }
 	    return TCL_OK;
 	}
     } /* while */
 
-    if (bufObj != (Tcl_Obj*) NULL) {
-        Tcl_DecrRefCount (bufObj);
-	bufObj = (Tcl_Obj*) NULL;
+    if (bufObj != NULL) {
+	TclDecrRefCount(bufObj);
+	bufObj = NULL;
     }
 
     /*
-     * Make the callback or return the number of bytes transferred.
-     * The local total is used because StopCopy frees csPtr.
+     * Make the callback or return the number of bytes transferred. The local
+     * total is used because StopCopy frees csPtr.
      */
 
     total = csPtr->total;
     if (cmdPtr && interp) {
+	int code;
 	/*
-	 * Get a private copy of the command so we can mutate it
-	 * by adding arguments.  Note that StopCopy frees our saved
-	 * reference to the original command obj.
+	 * Get a private copy of the command so we can mutate it by adding
+	 * arguments. Note that StopCopy frees our saved reference to the
+	 * original command obj.
 	 */
 
 	cmdPtr = Tcl_DuplicateObj(cmdPtr);
 	Tcl_IncrRefCount(cmdPtr);
 	StopCopy(csPtr);
-	Tcl_Preserve((ClientData) interp);
+	Tcl_Preserve(interp);
 
-	Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(total));
+	Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewWideIntObj(total));
 	if (errObj) {
 	    Tcl_ListObjAppendElement(interp, cmdPtr, errObj);
 	}
-	if (Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL) != TCL_OK) {
-	    Tcl_BackgroundError(interp);
+	code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
+	if (code != TCL_OK) {
+	    TclBackgroundException(interp, code);
 	    result = TCL_ERROR;
 	}
-	Tcl_DecrRefCount(cmdPtr);
-	Tcl_Release((ClientData) interp);
+	TclDecrRefCount(cmdPtr);
+	Tcl_Release(interp);
     } else {
 	StopCopy(csPtr);
 	if (interp) {
@@ -8184,7 +9040,7 @@ CopyData(csPtr, mask)
 		result = TCL_ERROR;
 	    } else {
 		Tcl_ResetResult(interp);
-		Tcl_SetIntObj(Tcl_GetObjResult(interp), total);
+		Tcl_SetObjResult(interp, Tcl_NewWideIntObj(total));
 	    }
 	}
     }
@@ -8201,8 +9057,8 @@ CopyData(csPtr, mask)
  *	No encoding conversions are applied to the bytes being read.
  *
  * Results:
- *	The number of characters read, or -1 on error. Use Tcl_GetErrno()
- *	to retrieve the error code for the error that occurred.
+ *	The number of characters read, or -1 on error. Use Tcl_GetErrno() to
+ *	retrieve the error code for the error that occurred.
  *
  * Side effects:
  *	May cause input to be buffered.
@@ -8211,60 +9067,61 @@ CopyData(csPtr, mask)
  */
 
 static int
-DoRead(chanPtr, bufPtr, toRead)
-    Channel *chanPtr;		/* The channel from which to read. */
-    char *bufPtr;		/* Where to store input read. */
-    int toRead;			/* Maximum number of bytes to read. */
-{
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
-    int copied;			/* How many characters were copied into
-                                 * the result string? */
-    int copiedNow;		/* How many characters were copied from
-                                 * the current input buffer? */
+DoRead(
+    Channel *chanPtr,		/* The channel from which to read. */
+    char *bufPtr,		/* Where to store input read. */
+    int toRead)			/* Maximum number of bytes to read. */
+{
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+    int copied;			/* How many characters were copied into the
+				 * result string? */
+    int copiedNow;		/* How many characters were copied from the
+				 * current input buffer? */
     int result;			/* Of calling GetInput. */
 
     /*
-     * If we have not encountered a sticky EOF, clear the EOF bit. Either
-     * way clear the BLOCKED bit. We want to discover these anew during
-     * each operation.
+     * If we have not encountered a sticky EOF, clear the EOF bit. Either way
+     * clear the BLOCKED bit. We want to discover these anew during each
+     * operation.
      */
 
     if (!(statePtr->flags & CHANNEL_STICKY_EOF)) {
-        statePtr->flags &= ~CHANNEL_EOF;
+	ResetFlag(statePtr, CHANNEL_EOF);
     }
-    statePtr->flags &= ~(CHANNEL_BLOCKED | CHANNEL_NEED_MORE_DATA);
-    
+    ResetFlag(statePtr, CHANNEL_BLOCKED | CHANNEL_NEED_MORE_DATA);
+
     for (copied = 0; copied < toRead; copied += copiedNow) {
-        copiedNow = CopyAndTranslateBuffer(statePtr, bufPtr + copied,
-                toRead - copied);
-        if (copiedNow == 0) {
-            if (statePtr->flags & CHANNEL_EOF) {
+	copiedNow = CopyAndTranslateBuffer(statePtr, bufPtr + copied,
+		toRead - copied);
+	if (copiedNow == 0) {
+	    if (statePtr->flags & CHANNEL_EOF) {
 		goto done;
-            }
-            if (statePtr->flags & CHANNEL_BLOCKED) {
-                if (statePtr->flags & CHANNEL_NONBLOCKING) {
+	    }
+	    if (statePtr->flags & CHANNEL_BLOCKED) {
+		if (statePtr->flags & CHANNEL_NONBLOCKING) {
 		    goto done;
-                }
-                statePtr->flags &= (~(CHANNEL_BLOCKED));
-            }
-            result = GetInput(chanPtr);
-            if (result != 0) {
-                if (result != EAGAIN) {
-                    copied = -1;
-                }
+		}
+		ResetFlag(statePtr, CHANNEL_BLOCKED);
+	    }
+	    result = GetInput(chanPtr);
+	    if (result != 0) {
+		if (result != EAGAIN) {
+		    copied = -1;
+		}
 		goto done;
-            }
-        }
+	    }
+	}
     }
 
-    statePtr->flags &= (~(CHANNEL_BLOCKED));
+    ResetFlag(statePtr, CHANNEL_BLOCKED);
 
-    done:
     /*
-     * Update the notifier state so we don't block while there is still
-     * data in the buffers.
+     * Update the notifier state so we don't block while there is still data
+     * in the buffers.
      */
 
+  done:
     UpdateInterest(chanPtr);
     return copied;
 }
@@ -8274,13 +9131,13 @@ DoRead(chanPtr, bufPtr, toRead)
  *
  * CopyAndTranslateBuffer --
  *
- *	Copy at most one buffer of input to the result space, doing
- *	eol translations according to mode in effect currently.
+ *	Copy at most one buffer of input to the result space, doing eol
+ *	translations according to mode in effect currently.
  *
  * Results:
- *	Number of bytes stored in the result buffer (as opposed to the
- *	number of bytes read from the channel).  May return
- *	zero if no input is available to be translated.
+ *	Number of bytes stored in the result buffer (as opposed to the number
+ *	of bytes read from the channel). May return zero if no input is
+ *	available to be translated.
  *
  * Side effects:
  *	Consumes buffered input. May deallocate one buffer.
@@ -8289,220 +9146,208 @@ DoRead(chanPtr, bufPtr, toRead)
  */
 
 static int
-CopyAndTranslateBuffer(statePtr, result, space)
-    ChannelState *statePtr;	/* Channel state from which to read input. */
-    char *result;		/* Where to store the copied input. */
-    int space;			/* How many bytes are available in result
-                                 * to store the copied input? */
+CopyAndTranslateBuffer(
+    ChannelState *statePtr,	/* Channel state from which to read input. */
+    char *result,		/* Where to store the copied input. */
+    int space)			/* How many bytes are available in result to
+				 * store the copied input? */
 {
     ChannelBuffer *bufPtr;	/* The buffer from which to copy bytes. */
-    int bytesInBuffer;		/* How many bytes are available to be
-                                 * copied in the current input buffer? */
+    int bytesInBuffer;		/* How many bytes are available to be copied
+				 * in the current input buffer? */
     int copied;			/* How many characters were already copied
-                                 * into the destination space? */
-    int i;			/* Iterates over the copied input looking
-                                 * for the input eofChar. */
-    
+				 * into the destination space? */
+    int i;			/* Iterates over the copied input looking for
+				 * the input eofChar. */
+
     /*
      * If there is no input at all, return zero. The invariant is that either
-     * there is no buffer in the queue, or if the first buffer is empty, it
-     * is also the last buffer (and thus there is no input in the queue).
-     * Note also that if the buffer is empty, we leave it in the queue.
+     * there is no buffer in the queue, or if the first buffer is empty, it is
+     * also the last buffer (and thus there is no input in the queue). Note
+     * also that if the buffer is empty, we leave it in the queue.
      */
-    
-    if (statePtr->inQueueHead == (ChannelBuffer *) NULL) {
-        return 0;
+
+    if (statePtr->inQueueHead == NULL) {
+	return 0;
     }
     bufPtr = statePtr->inQueueHead;
-    bytesInBuffer = bufPtr->nextAdded - bufPtr->nextRemoved;
+    bytesInBuffer = BytesLeft(bufPtr);
 
     copied = 0;
     switch (statePtr->inputTranslation) {
-        case TCL_TRANSLATE_LF: {
-            if (bytesInBuffer == 0) {
-                return 0;
-            }
+    case TCL_TRANSLATE_LF:
+	if (bytesInBuffer == 0) {
+	    return 0;
+	}
 
-	    /*
-             * Copy the current chunk into the result buffer.
-             */
-
-	    if (bytesInBuffer < space) {
-		space = bytesInBuffer;
-	    }
-	    memcpy((VOID *) result,
-		    (VOID *) (bufPtr->buf + bufPtr->nextRemoved),
-		    (size_t) space);
-	    bufPtr->nextRemoved += space;
-	    copied = space;
-            break;
-	}
-        case TCL_TRANSLATE_CR: {
-	    char *end;
-	    
-            if (bytesInBuffer == 0) {
-                return 0;
-            }
+	/*
+	 * Copy the current chunk into the result buffer.
+	 */
 
-	    /*
-             * Copy the current chunk into the result buffer, then
-             * replace all \r with \n.
-             */
-
-	    if (bytesInBuffer < space) {
-		space = bytesInBuffer;
-	    }
-	    memcpy((VOID *) result,
-		    (VOID *) (bufPtr->buf + bufPtr->nextRemoved),
-		    (size_t) space);
-	    bufPtr->nextRemoved += space;
-	    copied = space;
-
-	    for (end = result + copied; result < end; result++) {
-		if (*result == '\r') {
-		    *result = '\n';
-		}
-            }
-            break;
-	}
-        case TCL_TRANSLATE_CRLF: {
-	    char *src, *end, *dst;
-	    int curByte;
-	    
-            /*
-             * If there is a held-back "\r" at EOF, produce it now.
-             */
-            
-	    if (bytesInBuffer == 0) {
-                if ((statePtr->flags & (INPUT_SAW_CR | CHANNEL_EOF)) ==
-                        (INPUT_SAW_CR | CHANNEL_EOF)) {
-                    result[0] = '\r';
-                    statePtr->flags &= ~INPUT_SAW_CR;
-                    return 1;
-                }
-                return 0;
-            }
-
-            /*
-             * Copy the current chunk and replace "\r\n" with "\n"
-             * (but not standalone "\r"!).
-             */
-
-	    if (bytesInBuffer < space) {
-		space = bytesInBuffer;
-	    }
-	    memcpy((VOID *) result,
-		    (VOID *) (bufPtr->buf + bufPtr->nextRemoved),
-		    (size_t) space);
-	    bufPtr->nextRemoved += space;
-	    copied = space;
-
-	    end = result + copied;
-	    dst = result;
-	    for (src = result; src < end; src++) {
-		curByte = *src;
-		if (curByte == '\n') {
-                    statePtr->flags &= ~INPUT_SAW_CR;
-		} else if (statePtr->flags & INPUT_SAW_CR) {
-		    statePtr->flags &= ~INPUT_SAW_CR;
-		    *dst = '\r';
-		    dst++;
-		}
-		if (curByte == '\r') {
-		    statePtr->flags |= INPUT_SAW_CR;
-		} else {
-		    *dst = (char) curByte;
-		    dst++;
-		}
+	if (bytesInBuffer < space) {
+	    space = bytesInBuffer;
+	}
+	memcpy(result, RemovePoint(bufPtr), (size_t) space);
+	bufPtr->nextRemoved += space;
+	copied = space;
+	break;
+    case TCL_TRANSLATE_CR: {
+	char *end;
+
+	if (bytesInBuffer == 0) {
+	    return 0;
+	}
+
+	/*
+	 * Copy the current chunk into the result buffer, then replace all \r
+	 * with \n.
+	 */
+
+	if (bytesInBuffer < space) {
+	    space = bytesInBuffer;
+	}
+	memcpy(result, RemovePoint(bufPtr), (size_t) space);
+	bufPtr->nextRemoved += space;
+	copied = space;
+
+	for (end = result + copied; result < end; result++) {
+	    if (*result == '\r') {
+		*result = '\n';
 	    }
-	    copied = dst - result;
-	    break;
 	}
-        case TCL_TRANSLATE_AUTO: {
-	    char *src, *end, *dst;
-	    int curByte;
-	
-            if (bytesInBuffer == 0) {
-                return 0;
-            }
-
-            /*
-             * Loop over the current buffer, converting "\r" and "\r\n"
-             * to "\n".
-             */
-
-	    if (bytesInBuffer < space) {
-		space = bytesInBuffer;
-	    }
-	    memcpy((VOID *) result,
-		    (VOID *) (bufPtr->buf + bufPtr->nextRemoved),
-		    (size_t) space);
-	    bufPtr->nextRemoved += space;
-	    copied = space;
-
-	    end = result + copied;
-	    dst = result;
-	    for (src = result; src < end; src++) {
-		curByte = *src;
-		if (curByte == '\r') {
-		    statePtr->flags |= INPUT_SAW_CR;
-		    *dst = '\n';
+	break;
+    }
+    case TCL_TRANSLATE_CRLF: {
+	char *src, *end, *dst;
+	int curByte;
+
+	/*
+	 * If there is a held-back "\r" at EOF, produce it now.
+	 */
+
+	if (bytesInBuffer == 0) {
+	    if ((statePtr->flags & (INPUT_SAW_CR | CHANNEL_EOF)) ==
+		    (INPUT_SAW_CR | CHANNEL_EOF)) {
+		result[0] = '\r';
+		ResetFlag(statePtr, INPUT_SAW_CR);
+		return 1;
+	    }
+	    return 0;
+	}
+
+	/*
+	 * Copy the current chunk and replace "\r\n" with "\n" (but not
+	 * standalone "\r"!).
+	 */
+
+	if (bytesInBuffer < space) {
+	    space = bytesInBuffer;
+	}
+	memcpy(result, RemovePoint(bufPtr), (size_t) space);
+	bufPtr->nextRemoved += space;
+	copied = space;
+
+	end = result + copied;
+	dst = result;
+	for (src = result; src < end; src++) {
+	    curByte = *src;
+	    if (curByte == '\n') {
+		ResetFlag(statePtr, INPUT_SAW_CR);
+	    } else if (statePtr->flags & INPUT_SAW_CR) {
+		ResetFlag(statePtr, INPUT_SAW_CR);
+		*dst = '\r';
+		dst++;
+	    }
+	    if (curByte == '\r') {
+		SetFlag(statePtr, INPUT_SAW_CR);
+	    } else {
+		*dst = (char) curByte;
+		dst++;
+	    }
+	}
+	copied = dst - result;
+	break;
+    }
+    case TCL_TRANSLATE_AUTO: {
+	char *src, *end, *dst;
+	int curByte;
+
+	if (bytesInBuffer == 0) {
+	    return 0;
+	}
+
+	/*
+	 * Loop over the current buffer, converting "\r" and "\r\n" to "\n".
+	 */
+
+	if (bytesInBuffer < space) {
+	    space = bytesInBuffer;
+	}
+	memcpy(result, RemovePoint(bufPtr), (size_t) space);
+	bufPtr->nextRemoved += space;
+	copied = space;
+
+	end = result + copied;
+	dst = result;
+	for (src = result; src < end; src++) {
+	    curByte = *src;
+	    if (curByte == '\r') {
+		SetFlag(statePtr, INPUT_SAW_CR);
+		*dst = '\n';
+		dst++;
+	    } else {
+		if ((curByte != '\n') || !(statePtr->flags & INPUT_SAW_CR)) {
+		    *dst = (char) curByte;
 		    dst++;
-		} else {
-		    if ((curByte != '\n') || 
-			    !(statePtr->flags & INPUT_SAW_CR)) {
-			*dst = (char) curByte;
-			dst++;
-		    }
-		    statePtr->flags &= ~INPUT_SAW_CR;
 		}
+		ResetFlag(statePtr, INPUT_SAW_CR);
 	    }
-	    copied = dst - result;
-            break;
-	}
-        default: {
-            panic("unknown eol translation mode");
 	}
+	copied = dst - result;
+	break;
+    }
+    default:
+	Tcl_Panic("unknown eol translation mode");
     }
 
     /*
-     * If an in-stream EOF character is set for this channel, check that
-     * the input we copied so far does not contain the EOF char.  If it does,
-     * copy only up to and excluding that character.
+     * If an in-stream EOF character is set for this channel, check that the
+     * input we copied so far does not contain the EOF char. If it does, copy
+     * only up to and excluding that character.
      */
-    
+
     if (statePtr->inEofChar != 0) {
-        for (i = 0; i < copied; i++) {
-            if (result[i] == (char) statePtr->inEofChar) {
+	for (i = 0; i < copied; i++) {
+	    if (result[i] == (char) statePtr->inEofChar) {
 		/*
-		 * Set sticky EOF so that no further input is presented
-		 * to the caller.
+		 * Set sticky EOF so that no further input is presented to the
+		 * caller.
 		 */
-		
-		statePtr->flags |= (CHANNEL_EOF | CHANNEL_STICKY_EOF);
+
+		SetFlag(statePtr, CHANNEL_EOF | CHANNEL_STICKY_EOF);
 		statePtr->inputEncodingFlags |= TCL_ENCODING_END;
 		copied = i;
-                break;
-            }
-        }
+		break;
+	    }
+	}
     }
 
     /*
      * If the current buffer is empty recycle it.
      */
 
-    if (bufPtr->nextRemoved == bufPtr->nextAdded) {
-        statePtr->inQueueHead = bufPtr->nextPtr;
-        if (statePtr->inQueueHead == (ChannelBuffer *) NULL) {
-            statePtr->inQueueTail = (ChannelBuffer *) NULL;
-        }
-        RecycleBuffer(statePtr, bufPtr, 0);
+    if (IsBufferEmpty(bufPtr)) {
+	statePtr->inQueueHead = bufPtr->nextPtr;
+	if (statePtr->inQueueHead == NULL) {
+	    statePtr->inQueueTail = NULL;
+	}
+	RecycleBuffer(statePtr, bufPtr, 0);
     }
 
     /*
-     * Return the number of characters copied into the result buffer.
-     * This may be different from the number of bytes consumed, because
-     * of EOL translations.
+     * Return the number of characters copied into the result buffer. This may
+     * be different from the number of bytes consumed, because of EOL
+     * translations.
      */
 
     return copied;
@@ -8516,8 +9361,8 @@ CopyAndTranslateBuffer(statePtr, result, space)
  *	Copy at most one buffer of input to the result space.
  *
  * Results:
- *	Number of bytes stored in the result buffer.  May return
- *	zero if no input is available.
+ *	Number of bytes stored in the result buffer. May return zero if no
+ *	input is available.
  *
  * Side effects:
  *	Consumes buffered input. May deallocate one buffer.
@@ -8526,39 +9371,39 @@ CopyAndTranslateBuffer(statePtr, result, space)
  */
 
 static int
-CopyBuffer(chanPtr, result, space)
-    Channel *chanPtr;		/* Channel from which to read input. */
-    char *result;		/* Where to store the copied input. */
-    int space;			/* How many bytes are available in result
-                                 * to store the copied input? */
+CopyBuffer(
+    Channel *chanPtr,		/* Channel from which to read input. */
+    char *result,		/* Where to store the copied input. */
+    int space)			/* How many bytes are available in result to
+				 * store the copied input? */
 {
     ChannelBuffer *bufPtr;	/* The buffer from which to copy bytes. */
-    int bytesInBuffer;		/* How many bytes are available to be
-                                 * copied in the current input buffer? */
+    int bytesInBuffer;		/* How many bytes are available to be copied
+				 * in the current input buffer? */
     int copied;			/* How many characters were already copied
-                                 * into the destination space? */
-    
+				 * into the destination space? */
+
     /*
-     * If there is no input at all, return zero. The invariant is that
-     * either there is no buffer in the queue, or if the first buffer
-     * is empty, it is also the last buffer (and thus there is no
-     * input in the queue).  Note also that if the buffer is empty, we
-     * don't leave it in the queue, but recycle it.
+     * If there is no input at all, return zero. The invariant is that either
+     * there is no buffer in the queue, or if the first buffer is empty, it is
+     * also the last buffer (and thus there is no input in the queue). Note
+     * also that if the buffer is empty, we don't leave it in the queue, but
+     * recycle it.
      */
-    
-    if (chanPtr->inQueueHead == (ChannelBuffer *) NULL) {
-        return 0;
+
+    if (chanPtr->inQueueHead == NULL) {
+	return 0;
     }
     bufPtr = chanPtr->inQueueHead;
-    bytesInBuffer = bufPtr->nextAdded - bufPtr->nextRemoved;
+    bytesInBuffer = BytesLeft(bufPtr);
 
     copied = 0;
 
     if (bytesInBuffer == 0) {
-        RecycleBuffer(chanPtr->state, bufPtr, 0);
-	chanPtr->inQueueHead = (ChannelBuffer*) NULL;
-	chanPtr->inQueueTail = (ChannelBuffer*) NULL;
-        return 0;
+	RecycleBuffer(chanPtr->state, bufPtr, 0);
+	chanPtr->inQueueHead = NULL;
+	chanPtr->inQueueTail = NULL;
+	return 0;
     }
 
     /*
@@ -8566,31 +9411,29 @@ CopyBuffer(chanPtr, result, space)
      */
 
     if (bytesInBuffer < space) {
-        space = bytesInBuffer;
+	space = bytesInBuffer;
     }
 
-    memcpy((VOID *) result,
-	   (VOID *) (bufPtr->buf + bufPtr->nextRemoved),
-	   (size_t) space);
+    memcpy(result, RemovePoint(bufPtr), (size_t) space);
     bufPtr->nextRemoved += space;
     copied = space;
 
     /*
-     * We don't care about in-stream EOF characters here as the data
-     * read here may still flow through one or more transformations,
-     * i.e. is not in its final state yet.
+     * We don't care about in-stream EOF characters here as the data read here
+     * may still flow through one or more transformations, i.e. is not in its
+     * final state yet.
      */
 
     /*
      * If the current buffer is empty recycle it.
      */
 
-    if (bufPtr->nextRemoved == bufPtr->nextAdded) {
-        chanPtr->inQueueHead = bufPtr->nextPtr;
-        if (chanPtr->inQueueHead == (ChannelBuffer *) NULL) {
-            chanPtr->inQueueTail = (ChannelBuffer *) NULL;
-        }
-        RecycleBuffer(chanPtr->state, bufPtr, 0);
+    if (IsBufferEmpty(bufPtr)) {
+	chanPtr->inQueueHead = bufPtr->nextPtr;
+	if (chanPtr->inQueueHead == NULL) {
+	    chanPtr->inQueueTail = NULL;
+	}
+	RecycleBuffer(chanPtr->state, bufPtr, 0);
     }
 
     /*
@@ -8622,29 +9465,28 @@ CopyBuffer(chanPtr, result, space)
  */
 
 static int
-DoWrite(chanPtr, src, srcLen)
-    Channel *chanPtr;			/* The channel to buffer output for. */
-    CONST char *src;			/* Data to write. */
-    int srcLen;				/* Number of bytes to write. */
-{
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
-    ChannelBuffer *outBufPtr;		/* Current output buffer. */
-    int foundNewline;			/* Did we find a newline in output? */
+DoWrite(
+    Channel *chanPtr,		/* The channel to buffer output for. */
+    const char *src,		/* Data to write. */
+    int srcLen)			/* Number of bytes to write. */
+{
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
+    ChannelBuffer *outBufPtr;	/* Current output buffer. */
+    int foundNewline;		/* Did we find a newline in output? */
     char *dPtr;
-    CONST char *sPtr;			/* Search variables for newline. */
-    int crsent;				/* In CRLF eol translation mode,
-                                         * remember the fact that a CR was
-                                         * output to the channel without
-                                         * its following NL. */
-    int i;				/* Loop index for newline search. */
-    int destCopied;			/* How many bytes were used in this
-                                         * destination buffer to hold the
-                                         * output? */
-    int totalDestCopied;		/* How many bytes total were
-                                         * copied to the channel buffer? */
-    int srcCopied;			/* How many bytes were copied from
-                                         * the source string? */
-    char *destPtr;			/* Where in line to copy to? */
+    const char *sPtr;		/* Search variables for newline. */
+    int crsent;			/* In CRLF eol translation mode, remember the
+				 * fact that a CR was output to the channel
+				 * without its following NL. */
+    int i;			/* Loop index for newline search. */
+    int destCopied;		/* How many bytes were used in this
+				 * destination buffer to hold the output? */
+    int totalDestCopied;	/* How many bytes total were copied to the
+				 * channel buffer? */
+    int srcCopied;		/* How many bytes were copied from the source
+				 * string? */
+    char *destPtr;		/* Where in line to copy to? */
 
     /*
      * If we are in network (or windows) translation mode, record the fact
@@ -8652,7 +9494,7 @@ DoWrite(chanPtr, src, srcLen)
      */
 
     crsent = 0;
-    
+
     /*
      * Loop filling buffers and flushing them until all output has been
      * consumed.
@@ -8662,97 +9504,96 @@ DoWrite(chanPtr, src, srcLen)
     totalDestCopied = 0;
 
     while (srcLen > 0) {
-        
-        /*
-         * Make sure there is a current output buffer to accept output.
-         */
-
-        if (statePtr->curOutPtr == (ChannelBuffer *) NULL) {
-            statePtr->curOutPtr = AllocChannelBuffer(statePtr->bufSize);
-        }
-
-        outBufPtr = statePtr->curOutPtr;
-
-        destCopied = outBufPtr->bufLength - outBufPtr->nextAdded;
-        if (destCopied > srcLen) {
-            destCopied = srcLen;
-        }
-        
-        destPtr = outBufPtr->buf + outBufPtr->nextAdded;
-        switch (statePtr->outputTranslation) {
-            case TCL_TRANSLATE_LF:
-                srcCopied = destCopied;
-                memcpy((VOID *) destPtr, (VOID *) src, (size_t) destCopied);
-                break;
-            case TCL_TRANSLATE_CR:
-                srcCopied = destCopied;
-                memcpy((VOID *) destPtr, (VOID *) src, (size_t) destCopied);
-                for (dPtr = destPtr; dPtr < destPtr + destCopied; dPtr++) {
-                    if (*dPtr == '\n') {
-                        *dPtr = '\r';
-                    }
-                }
-                break;
-            case TCL_TRANSLATE_CRLF:
-                for (srcCopied = 0, dPtr = destPtr, sPtr = src;
-                     dPtr < destPtr + destCopied;
-                     dPtr++, sPtr++, srcCopied++) {
-                    if (*sPtr == '\n') {
-                        if (crsent) {
-                            *dPtr = '\n';
-                            crsent = 0;
-                        } else {
-                            *dPtr = '\r';
-                            crsent = 1;
-                            sPtr--, srcCopied--;
-                        }
-                    } else {
-                        *dPtr = *sPtr;
-                    }
-                }
-                break;
-            case TCL_TRANSLATE_AUTO:
-                panic("Tcl_Write: AUTO output translation mode not supported");
-            default:
-                panic("Tcl_Write: unknown output translation mode");
-        }
-
-        /*
-         * The current buffer is ready for output if it is full, or if it
-         * contains a newline and this channel is line-buffered, or if it
-         * contains any output and this channel is unbuffered.
-         */
-
-        outBufPtr->nextAdded += destCopied;
-        if (!(statePtr->flags & BUFFER_READY)) {
-            if (outBufPtr->nextAdded == outBufPtr->bufLength) {
-                statePtr->flags |= BUFFER_READY;
-            } else if (statePtr->flags & CHANNEL_LINEBUFFERED) {
-                for (sPtr = src, i = 0, foundNewline = 0;
-		     (i < srcCopied) && (!foundNewline);
-		     i++, sPtr++) {
-                    if (*sPtr == '\n') {
-                        foundNewline = 1;
-                        break;
-                    }
-                }
-                if (foundNewline) {
-                    statePtr->flags |= BUFFER_READY;
-                }
-            } else if (statePtr->flags & CHANNEL_UNBUFFERED) {
-                statePtr->flags |= BUFFER_READY;
-            }
-        }
-        
-        totalDestCopied += srcCopied;
-        src += srcCopied;
-        srcLen -= srcCopied;
-
-        if (statePtr->flags & BUFFER_READY) {
-            if (FlushChannel(NULL, chanPtr, 0) != 0) {
-                return -1;
-            }
-        }
+	/*
+	 * Make sure there is a current output buffer to accept output.
+	 */
+
+	if (statePtr->curOutPtr == NULL) {
+	    statePtr->curOutPtr = AllocChannelBuffer(statePtr->bufSize);
+	}
+
+	outBufPtr = statePtr->curOutPtr;
+
+	destCopied = SpaceLeft(outBufPtr);
+	if (destCopied > srcLen) {
+	    destCopied = srcLen;
+	}
+
+	destPtr = InsertPoint(outBufPtr);
+	switch (statePtr->outputTranslation) {
+	case TCL_TRANSLATE_LF:
+	    srcCopied = destCopied;
+	    memcpy(destPtr, src, (size_t) destCopied);
+	    break;
+	case TCL_TRANSLATE_CR:
+	    srcCopied = destCopied;
+	    memcpy(destPtr, src, (size_t) destCopied);
+	    for (dPtr = destPtr; dPtr < destPtr + destCopied; dPtr++) {
+		if (*dPtr == '\n') {
+		    *dPtr = '\r';
+		}
+	    }
+	    break;
+	case TCL_TRANSLATE_CRLF:
+	    for (srcCopied = 0, dPtr = destPtr, sPtr = src;
+		    dPtr < destPtr + destCopied;
+		    dPtr++, sPtr++, srcCopied++) {
+		if (*sPtr == '\n') {
+		    if (crsent) {
+			*dPtr = '\n';
+			crsent = 0;
+		    } else {
+			*dPtr = '\r';
+			crsent = 1;
+			sPtr--, srcCopied--;
+		    }
+		} else {
+		    *dPtr = *sPtr;
+		}
+	    }
+	    break;
+	case TCL_TRANSLATE_AUTO:
+	    Tcl_Panic("Tcl_Write: AUTO output translation mode not supported");
+	default:
+	    Tcl_Panic("Tcl_Write: unknown output translation mode");
+	}
+
+	/*
+	 * The current buffer is ready for output if it is full, or if it
+	 * contains a newline and this channel is line-buffered, or if it
+	 * contains any output and this channel is unbuffered.
+	 */
+
+	outBufPtr->nextAdded += destCopied;
+	if (!(statePtr->flags & BUFFER_READY)) {
+	    if (IsBufferFull(outBufPtr)) {
+		SetFlag(statePtr, BUFFER_READY);
+	    } else if (statePtr->flags & CHANNEL_LINEBUFFERED) {
+		for (sPtr = src, i = 0, foundNewline = 0;
+			(i < srcCopied) && (!foundNewline);
+			i++, sPtr++) {
+		    if (*sPtr == '\n') {
+			foundNewline = 1;
+			break;
+		    }
+		}
+		if (foundNewline) {
+		    SetFlag(statePtr, BUFFER_READY);
+		}
+	    } else if (statePtr->flags & CHANNEL_UNBUFFERED) {
+		SetFlag(statePtr, BUFFER_READY);
+	    }
+	}
+
+	totalDestCopied += srcCopied;
+	src += srcCopied;
+	srcLen -= srcCopied;
+
+	if (statePtr->flags & BUFFER_READY) {
+	    if (FlushChannel(NULL, chanPtr, 0) != 0) {
+		return -1;
+	    }
+	}
     } /* Closes "while" */
 
     return totalDestCopied;
@@ -8763,9 +9604,9 @@ DoWrite(chanPtr, src, srcLen)
  *
  * CopyEventProc --
  *
- *	This routine is invoked as a channel event handler for
- *	the background copy operation.  It is just a trivial wrapper
- *	around the CopyData routine.
+ *	This routine is invoked as a channel event handler for the background
+ *	copy operation. It is just a trivial wrapper around the CopyData
+ *	routine.
  *
  * Results:
  *	None.
@@ -8777,11 +9618,11 @@ DoWrite(chanPtr, src, srcLen)
  */
 
 static void
-CopyEventProc(clientData, mask)
-    ClientData clientData;
-    int mask;
+CopyEventProc(
+    ClientData clientData,
+    int mask)
 {
-    (void) CopyData((CopyState *)clientData, mask);
+    (void) CopyData((CopyState *) clientData, mask);
 }
 
 /*
@@ -8795,15 +9636,15 @@ CopyEventProc(clientData, mask)
  *	None.
  *
  * Side effects:
- *	Removes any pending channel handlers and restores the blocking
- *	and buffering modes of the channels.  The CopyState is freed.
+ *	Removes any pending channel handlers and restores the blocking and
+ *	buffering modes of the channels. The CopyState is freed.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-StopCopy(csPtr)
-    CopyState *csPtr;		/* State for bg copy to stop . */
+StopCopy(
+    CopyState *csPtr)		/* State for bg copy to stop . */
 {
     ChannelState *inStatePtr, *outStatePtr;
     int nonBlocking;
@@ -8812,8 +9653,8 @@ StopCopy(csPtr)
 	return;
     }
 
-    inStatePtr	= csPtr->readPtr->state;
-    outStatePtr	= csPtr->writePtr->state;
+    inStatePtr = csPtr->readPtr->state;
+    outStatePtr = csPtr->writePtr->state;
 
     /*
      * Restore the old blocking mode and output buffering mode.
@@ -8833,20 +9674,20 @@ StopCopy(csPtr)
     }
     outStatePtr->flags &= ~(CHANNEL_LINEBUFFERED | CHANNEL_UNBUFFERED);
     outStatePtr->flags |=
-	csPtr->writeFlags & (CHANNEL_LINEBUFFERED | CHANNEL_UNBUFFERED);
+	    csPtr->writeFlags & (CHANNEL_LINEBUFFERED | CHANNEL_UNBUFFERED);
 
     if (csPtr->cmdPtr) {
-	Tcl_DeleteChannelHandler((Tcl_Channel)csPtr->readPtr, CopyEventProc,
-		(ClientData)csPtr);
+	Tcl_DeleteChannelHandler((Tcl_Channel) csPtr->readPtr, CopyEventProc,
+		csPtr);
 	if (csPtr->readPtr != csPtr->writePtr) {
-	    Tcl_DeleteChannelHandler((Tcl_Channel)csPtr->writePtr,
-		    CopyEventProc, (ClientData)csPtr);
+	    Tcl_DeleteChannelHandler((Tcl_Channel) csPtr->writePtr,
+		    CopyEventProc, csPtr);
 	}
-        Tcl_DecrRefCount(csPtr->cmdPtr);
+	TclDecrRefCount(csPtr->cmdPtr);
     }
-    inStatePtr->csPtrR  = NULL;
+    inStatePtr->csPtrR = NULL;
     outStatePtr->csPtrW = NULL;
-    ckfree((char*) csPtr);
+    ckfree((char *) csPtr);
 }
 
 /*
@@ -8854,23 +9695,23 @@ StopCopy(csPtr)
  *
  * StackSetBlockMode --
  *
- *	This function sets the blocking mode for a channel, iterating
- *	through each channel in a stack and updates the state flags.
+ *	This function sets the blocking mode for a channel, iterating through
+ *	each channel in a stack and updates the state flags.
  *
  * Results:
  *	0 if OK, result code from failed blockModeProc otherwise.
  *
  * Side effects:
- *	Modifies the blocking mode of the channel and possibly generates
- *	an error.
+ *	Modifies the blocking mode of the channel and possibly generates an
+ *	error.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-StackSetBlockMode(chanPtr, mode)
-    Channel *chanPtr;		/* Channel to modify. */
-    int mode;			/* One of TCL_MODE_BLOCKING or
+StackSetBlockMode(
+    Channel *chanPtr,		/* Channel to modify. */
+    int mode)			/* One of TCL_MODE_BLOCKING or
 				 * TCL_MODE_NONBLOCKING. */
 {
     int result = 0;
@@ -8881,7 +9722,7 @@ StackSetBlockMode(chanPtr, mode)
      */
 
     chanPtr = chanPtr->state->topChanPtr;
-    while (chanPtr != (Channel *) NULL) {
+    while (chanPtr != NULL) {
 	blockModeProc = Tcl_ChannelBlockModeProc(chanPtr->typePtr);
 	if (blockModeProc != NULL) {
 	    result = (*blockModeProc) (chanPtr->instanceData, mode);
@@ -8900,41 +9741,64 @@ StackSetBlockMode(chanPtr, mode)
  *
  * SetBlockMode --
  *
- *	This function sets the blocking mode for a channel and updates
- *	the state flags.
+ *	This function sets the blocking mode for a channel and updates the
+ *	state flags.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Modifies the blocking mode of the channel and possibly generates
- *	an error.
+ *	Modifies the blocking mode of the channel and possibly generates an
+ *	error.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetBlockMode(interp, chanPtr, mode)
-    Tcl_Interp *interp;		/* Interp for error reporting. */
-    Channel *chanPtr;		/* Channel to modify. */
-    int mode;			/* One of TCL_MODE_BLOCKING or
+SetBlockMode(
+    Tcl_Interp *interp,		/* Interp for error reporting. */
+    Channel *chanPtr,		/* Channel to modify. */
+    int mode)			/* One of TCL_MODE_BLOCKING or
 				 * TCL_MODE_NONBLOCKING. */
 {
-    ChannelState *statePtr = chanPtr->state;	/* state info for channel */
     int result = 0;
+    ChannelState *statePtr = chanPtr->state;
+				/* State info for channel */
 
     result = StackSetBlockMode(chanPtr, mode);
     if (result != 0) {
-	if (interp != (Tcl_Interp *) NULL) {
-	    Tcl_AppendResult(interp, "error setting blocking mode: ",
-		    Tcl_PosixError(interp), (char *) NULL);
+	if (interp != NULL) {
+	    /*
+	     * TIP #219.
+	     * Move error messages put by the driver into the bypass area and
+	     * put them into the regular interpreter result. Fall back to the
+	     * regular message if nothing was found in the bypass.
+	     *
+	     * Note that we cannot have a message in the interpreter bypass
+	     * area, StackSetBlockMode is restricted to the channel bypass.
+	     * We still need the interp as the destination of the move.
+	     */
+
+	    if (!TclChanCaughtErrorBypass(interp, (Tcl_Channel) chanPtr)) {
+		Tcl_AppendResult(interp, "error setting blocking mode: ",
+			Tcl_PosixError(interp), NULL);
+	    }
+	} else {
+	    /*
+	     * TIP #219.
+	     * If we have no interpreter to put a bypass message into we have
+	     * to clear it, to prevent its propagation and use in other places
+	     * unrelated to the actual occurence of the problem.
+	     */
+
+	    Tcl_SetChannelError((Tcl_Channel) chanPtr, NULL);
 	}
 	return TCL_ERROR;
     }
     if (mode == TCL_MODE_BLOCKING) {
-	statePtr->flags &= (~(CHANNEL_NONBLOCKING | BG_FLUSH_SCHEDULED));
+	ResetFlag(statePtr, CHANNEL_NONBLOCKING | BG_FLUSH_SCHEDULED);
     } else {
-	statePtr->flags |= CHANNEL_NONBLOCKING;
+	SetFlag(statePtr, CHANNEL_NONBLOCKING);
     }
     return TCL_OK;
 }
@@ -8956,10 +9820,10 @@ SetBlockMode(interp, chanPtr, mode)
  */
 
 int
-Tcl_GetChannelNames(interp)
-    Tcl_Interp *interp;		/* Interp for error reporting. */
+Tcl_GetChannelNames(
+    Tcl_Interp *interp)		/* Interp for error reporting. */
 {
-    return Tcl_GetChannelNamesEx(interp, (char *) NULL);
+    return Tcl_GetChannelNamesEx(interp, NULL);
 }
 
 /*
@@ -8967,9 +9831,9 @@ Tcl_GetChannelNames(interp)
  *
  * Tcl_GetChannelNamesEx --
  *
- *	Return the names of open channels in the interp filtered
- *	filtered through a pattern.  If pattern is NULL, it returns
- *	all the open channels.
+ *	Return the names of open channels in the interp filtered filtered
+ *	through a pattern. If pattern is NULL, it returns all the open
+ *	channels.
  *
  * Results:
  *	TCL_OK or TCL_ERROR.
@@ -8981,35 +9845,44 @@ Tcl_GetChannelNames(interp)
  */
 
 int
-Tcl_GetChannelNamesEx(interp, pattern)
-    Tcl_Interp *interp;		/* Interp for error reporting. */
-    CONST char *pattern;	/* pattern to filter on. */
+Tcl_GetChannelNamesEx(
+    Tcl_Interp *interp,		/* Interp for error reporting. */
+    const char *pattern)	/* Pattern to filter on. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     ChannelState *statePtr;
-    CONST char *name;		/* name for channel */
-    Tcl_Obj *resultPtr;		/* pointer to result object */
+    const char *name;		/* Name for channel */
+    Tcl_Obj *resultPtr;		/* Pointer to result object */
     Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
     Tcl_HashEntry *hPtr;	/* Search variable. */
     Tcl_HashSearch hSearch;	/* Search variable. */
 
-    if (interp == (Tcl_Interp *) NULL) {
+    if (interp == NULL) {
 	return TCL_OK;
     }
 
     /*
-     * Get the channel table that stores the channels registered
-     * for this interpreter.
+     * Get the channel table that stores the channels registered for this
+     * interpreter.
      */
-    hTblPtr	= GetChannelTable(interp);
-    resultPtr	= Tcl_GetObjResult(interp);
 
-    for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-	 hPtr != (Tcl_HashEntry *) NULL;
-	 hPtr = Tcl_NextHashEntry(&hSearch)) {
+    hTblPtr = GetChannelTable(interp);
+    TclNewObj(resultPtr);
+    if ((pattern != NULL) && TclMatchIsTrivial(pattern)
+	    && !((pattern[0] == 's') && (pattern[1] == 't')
+	    && (pattern[2] == 'd'))) {
+	if ((Tcl_FindHashEntry(hTblPtr, pattern) != NULL)
+		&& (Tcl_ListObjAppendElement(interp, resultPtr,
+		Tcl_NewStringObj(pattern, -1)) != TCL_OK)) {
+	    goto error;
+	}
+	goto done;
+    }
+    for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch); hPtr != NULL;
+	    hPtr = Tcl_NextHashEntry(&hSearch)) {
 
 	statePtr = ((Channel *) Tcl_GetHashValue(hPtr))->state;
-        if (statePtr->topChanPtr == (Channel *) tsdPtr->stdinChannel) {
+	if (statePtr->topChanPtr == (Channel *) tsdPtr->stdinChannel) {
 	    name = "stdin";
 	} else if (statePtr->topChanPtr == (Channel *) tsdPtr->stdoutChannel) {
 	    name = "stdout";
@@ -9017,18 +9890,24 @@ Tcl_GetChannelNamesEx(interp, pattern)
 	    name = "stderr";
 	} else {
 	    /*
-	     * This is also stored in Tcl_GetHashKey(hTblPtr, hPtr),
-	     * but it's simpler to just grab the name from the statePtr.
+	     * This is also stored in Tcl_GetHashKey(hTblPtr, hPtr), but it's
+	     * simpler to just grab the name from the statePtr.
 	     */
+
 	    name = statePtr->channelName;
 	}
 
 	if (((pattern == NULL) || Tcl_StringMatch(name, pattern)) &&
 		(Tcl_ListObjAppendElement(interp, resultPtr,
 			Tcl_NewStringObj(name, -1)) != TCL_OK)) {
+	error:
+	    TclDecrRefCount(resultPtr);
 	    return TCL_ERROR;
 	}
     }
+
+  done:
+    Tcl_SetObjResult(interp, resultPtr);
     return TCL_OK;
 }
 
@@ -9037,8 +9916,8 @@ Tcl_GetChannelNamesEx(interp, pattern)
  *
  * Tcl_IsChannelRegistered --
  *
- *	Checks whether the channel is associated with the interp.
- *	See also Tcl_RegisterChannel and Tcl_UnregisterChannel.
+ *	Checks whether the channel is associated with the interp. See also
+ *	Tcl_RegisterChannel and Tcl_UnregisterChannel.
  *
  * Results:
  *	0 if the channel is not registered in the interpreter, 1 else.
@@ -9050,32 +9929,33 @@ Tcl_GetChannelNamesEx(interp, pattern)
  */
 
 int
-Tcl_IsChannelRegistered (interp, chan)
-     Tcl_Interp* interp;	/* The interp to query of the channel */
-     Tcl_Channel chan;		/* The channel to check */
+Tcl_IsChannelRegistered(
+    Tcl_Interp *interp,		/* The interp to query of the channel */
+    Tcl_Channel chan)		/* The channel to check */
 {
-    Tcl_HashTable	*hTblPtr;	/* Hash table of channels. */
-    Tcl_HashEntry	*hPtr;		/* Search variable. */
-    Channel		*chanPtr;	/* The real IO channel. */
-    ChannelState	*statePtr;	/* State of the real channel. */
+    Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
+    Tcl_HashEntry *hPtr;	/* Search variable. */
+    Channel *chanPtr;		/* The real IO channel. */
+    ChannelState *statePtr;	/* State of the real channel. */
 
     /*
-     * Always check bottom-most channel in the stack.  This is the one
-     * that gets registered.
+     * Always check bottom-most channel in the stack. This is the one that
+     * gets registered.
      */
+
     chanPtr = ((Channel *) chan)->state->bottomChanPtr;
     statePtr = chanPtr->state;
 
-    hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
-    if (hTblPtr == (Tcl_HashTable *) NULL) {
-        return 0;
+    hTblPtr = Tcl_GetAssocData(interp, "tclIO", NULL);
+    if (hTblPtr == NULL) {
+	return 0;
     }
     hPtr = Tcl_FindHashEntry(hTblPtr, statePtr->channelName);
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        return 0;
+    if (hPtr == NULL) {
+	return 0;
     }
     if ((Channel *) Tcl_GetHashValue(hPtr) != chanPtr) {
-        return 0;
+	return 0;
     }
 
     return 1;
@@ -9098,11 +9978,11 @@ Tcl_IsChannelRegistered (interp, chan)
  */
 
 int
-Tcl_IsChannelShared (chan)
-    Tcl_Channel chan;	/* The channel to query */
+Tcl_IsChannelShared(
+    Tcl_Channel chan)		/* The channel to query */
 {
     ChannelState *statePtr = ((Channel *) chan)->state;
-					/* State of real channel structure. */
+				/* State of real channel structure. */
 
     return ((statePtr->refCount > 1) ? 1 : 0);
 }
@@ -9113,8 +9993,8 @@ Tcl_IsChannelShared (chan)
  * Tcl_IsChannelExisting --
  *
  *	Checks whether a channel of the given name exists in the
- *	(thread)-global list of all channels.
- *	See Tcl_GetChannelNamesEx for function exposed at the Tcl level.
+ *	(thread)-global list of all channels. See Tcl_GetChannelNamesEx for
+ *	function exposed at the Tcl level.
  *
  * Results:
  *	A boolean value (0 = Does not exist, 1 = Does exist).
@@ -9126,19 +10006,18 @@ Tcl_IsChannelShared (chan)
  */
 
 int
-Tcl_IsChannelExisting(chanName)
-    CONST char* chanName;	/* The name of the channel to look for. */
+Tcl_IsChannelExisting(
+    const char *chanName)	/* The name of the channel to look for. */
 {
     ChannelState *statePtr;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    CONST char *name;
+    const char *name;
     int chanNameLen;
 
     chanNameLen = strlen(chanName);
-    for (statePtr = tsdPtr->firstCSPtr;
-	 statePtr != NULL;
-	 statePtr = statePtr->nextCSPtr) {
-        if (statePtr->topChanPtr == (Channel *) tsdPtr->stdinChannel) {
+    for (statePtr = tsdPtr->firstCSPtr; statePtr != NULL;
+	    statePtr = statePtr->nextCSPtr) {
+	if (statePtr->topChanPtr == (Channel *) tsdPtr->stdinChannel) {
 	    name = "stdin";
 	} else if (statePtr->topChanPtr == (Channel *) tsdPtr->stdoutChannel) {
 	    name = "stdout";
@@ -9148,7 +10027,8 @@ Tcl_IsChannelExisting(chanName)
 	    name = statePtr->channelName;
 	}
 
-	/* Bug 2333466. Include \0 in the compare to prevent partial matching on prefixes.
+	/* Bug 2333466. Include \0 in the compare to prevent partial matching
+	 * on prefixes.
 	 */
 	if ((*chanName == *name) &&
 		(memcmp(name, chanName, (size_t) chanNameLen+1) == 0)) {
@@ -9175,9 +10055,9 @@ Tcl_IsChannelExisting(chanName)
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_ChannelName(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+const char *
+Tcl_ChannelName(
+    const Tcl_ChannelType *chanTypePtr) /* Pointer to channel type. */
 {
     return chanTypePtr->typeName;
 }
@@ -9199,8 +10079,9 @@ Tcl_ChannelName(chanTypePtr)
  */
 
 Tcl_ChannelTypeVersion
-Tcl_ChannelVersion(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelVersion(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     if (chanTypePtr->version == TCL_CHANNEL_VERSION_2) {
 	return TCL_CHANNEL_VERSION_2;
@@ -9208,11 +10089,14 @@ Tcl_ChannelVersion(chanTypePtr)
 	return TCL_CHANNEL_VERSION_3;
     } else if (chanTypePtr->version == TCL_CHANNEL_VERSION_4) {
 	return TCL_CHANNEL_VERSION_4;
+    } else if (chanTypePtr->version == TCL_CHANNEL_VERSION_5) {
+	return TCL_CHANNEL_VERSION_5;
     } else {
 	/*
-	 * In <v2 channel versions, the version field is occupied
-	 * by the Tcl_DriverBlockModeProc
+	 * In <v2 channel versions, the version field is occupied by the
+	 * Tcl_DriverBlockModeProc
 	 */
+
 	return TCL_CHANNEL_VERSION_1;
     }
 }
@@ -9235,13 +10119,13 @@ Tcl_ChannelVersion(chanTypePtr)
  */
 
 static int
-HaveVersion(chanTypePtr, minimumVersion)
-    Tcl_ChannelType *chanTypePtr;
-    Tcl_ChannelTypeVersion minimumVersion;
+HaveVersion(
+    const Tcl_ChannelType *chanTypePtr,
+    Tcl_ChannelTypeVersion minimumVersion)
 {
     Tcl_ChannelTypeVersion actualVersion = Tcl_ChannelVersion(chanTypePtr);
 
-    return ((int)actualVersion) >= ((int)minimumVersion);
+    return (PTR2INT(actualVersion)) >= (PTR2INT(minimumVersion));
 }
 
 /*
@@ -9260,8 +10144,9 @@ HaveVersion(chanTypePtr, minimumVersion)
  *---------------------------------------------------------------------- */
 
 Tcl_DriverBlockModeProc *
-Tcl_ChannelBlockModeProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelBlockModeProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     if (HaveVersion(chanTypePtr, TCL_CHANNEL_VERSION_2)) {
 	return chanTypePtr->blockModeProc;
@@ -9269,6 +10154,7 @@ Tcl_ChannelBlockModeProc(chanTypePtr)
 	/*
 	 * The v1 structure had the blockModeProc in a different place.
 	 */
+
 	return (Tcl_DriverBlockModeProc *) (chanTypePtr->version);
     }
 }
@@ -9290,8 +10176,9 @@ Tcl_ChannelBlockModeProc(chanTypePtr)
  */
 
 Tcl_DriverCloseProc *
-Tcl_ChannelCloseProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelCloseProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->closeProc;
 }
@@ -9313,8 +10200,9 @@ Tcl_ChannelCloseProc(chanTypePtr)
  */
 
 Tcl_DriverClose2Proc *
-Tcl_ChannelClose2Proc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelClose2Proc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->close2Proc;
 }
@@ -9336,8 +10224,9 @@ Tcl_ChannelClose2Proc(chanTypePtr)
  */
 
 Tcl_DriverInputProc *
-Tcl_ChannelInputProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelInputProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->inputProc;
 }
@@ -9359,8 +10248,9 @@ Tcl_ChannelInputProc(chanTypePtr)
  */
 
 Tcl_DriverOutputProc *
-Tcl_ChannelOutputProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelOutputProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->outputProc;
 }
@@ -9382,8 +10272,9 @@ Tcl_ChannelOutputProc(chanTypePtr)
  */
 
 Tcl_DriverSeekProc *
-Tcl_ChannelSeekProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelSeekProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->seekProc;
 }
@@ -9405,8 +10296,9 @@ Tcl_ChannelSeekProc(chanTypePtr)
  */
 
 Tcl_DriverSetOptionProc *
-Tcl_ChannelSetOptionProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelSetOptionProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->setOptionProc;
 }
@@ -9428,8 +10320,9 @@ Tcl_ChannelSetOptionProc(chanTypePtr)
  */
 
 Tcl_DriverGetOptionProc *
-Tcl_ChannelGetOptionProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelGetOptionProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->getOptionProc;
 }
@@ -9451,8 +10344,9 @@ Tcl_ChannelGetOptionProc(chanTypePtr)
  */
 
 Tcl_DriverWatchProc *
-Tcl_ChannelWatchProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelWatchProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->watchProc;
 }
@@ -9474,8 +10368,9 @@ Tcl_ChannelWatchProc(chanTypePtr)
  */
 
 Tcl_DriverGetHandleProc *
-Tcl_ChannelGetHandleProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelGetHandleProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     return chanTypePtr->getHandleProc;
 }
@@ -9497,8 +10392,9 @@ Tcl_ChannelGetHandleProc(chanTypePtr)
  */
 
 Tcl_DriverFlushProc *
-Tcl_ChannelFlushProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelFlushProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     if (HaveVersion(chanTypePtr, TCL_CHANNEL_VERSION_2)) {
 	return chanTypePtr->flushProc;
@@ -9524,8 +10420,9 @@ Tcl_ChannelFlushProc(chanTypePtr)
  */
 
 Tcl_DriverHandlerProc *
-Tcl_ChannelHandlerProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelHandlerProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     if (HaveVersion(chanTypePtr, TCL_CHANNEL_VERSION_2)) {
 	return chanTypePtr->handlerProc;
@@ -9551,8 +10448,9 @@ Tcl_ChannelHandlerProc(chanTypePtr)
  */
 
 Tcl_DriverWideSeekProc *
-Tcl_ChannelWideSeekProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelWideSeekProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     if (HaveVersion(chanTypePtr, TCL_CHANNEL_VERSION_3)) {
 	return chanTypePtr->wideSeekProc;
@@ -9566,7 +10464,8 @@ Tcl_ChannelWideSeekProc(chanTypePtr)
  *
  * Tcl_ChannelThreadActionProc --
  *
- *	Return the Tcl_DriverThreadActionProc of the channel type.
+ *	TIP #218, Channel Thread Actions. Return the
+ *	Tcl_DriverThreadActionProc of the channel type.
  *
  * Results:
  *	A pointer to the proc.
@@ -9578,8 +10477,9 @@ Tcl_ChannelWideSeekProc(chanTypePtr)
  */
 
 Tcl_DriverThreadActionProc *
-Tcl_ChannelThreadActionProc(chanTypePtr)
-    Tcl_ChannelType *chanTypePtr;	/* Pointer to channel type. */
+Tcl_ChannelThreadActionProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
 {
     if (HaveVersion(chanTypePtr, TCL_CHANNEL_VERSION_4)) {
 	return chanTypePtr->threadActionProc;
@@ -9587,43 +10487,537 @@ Tcl_ChannelThreadActionProc(chanTypePtr)
 	return NULL;
     }
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetChannelErrorInterp --
+ *
+ *	TIP #219, Tcl Channel Reflection API.
+ *	Store an error message for the I/O system.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Discards a previously stored message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetChannelErrorInterp(
+    Tcl_Interp *interp,		/* Interp to store the data into. */
+    Tcl_Obj *msg)		/* Error message to store. */
+{
+    Interp *iPtr = (Interp *) interp;
+
+    if (iPtr->chanMsg != NULL) {
+	TclDecrRefCount(iPtr->chanMsg);
+	iPtr->chanMsg = NULL;
+    }
+
+    if (msg != NULL) {
+	iPtr->chanMsg = FixLevelCode(msg);
+	Tcl_IncrRefCount(iPtr->chanMsg);
+    }
+    return;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetChannelError --
+ *
+ *	TIP #219, Tcl Channel Reflection API.
+ *	Store an error message for the I/O system.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Discards a previously stored message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetChannelError(
+    Tcl_Channel chan,		/* Channel to store the data into. */
+    Tcl_Obj *msg)		/* Error message to store. */
+{
+    ChannelState *statePtr = ((Channel *) chan)->state;
+
+    if (statePtr->chanMsg != NULL) {
+	TclDecrRefCount(statePtr->chanMsg);
+	statePtr->chanMsg = NULL;
+    }
+
+    if (msg != NULL) {
+	statePtr->chanMsg = FixLevelCode(msg);
+	Tcl_IncrRefCount(statePtr->chanMsg);
+    }
+    return;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FixLevelCode --
+ *
+ *	TIP #219, Tcl Channel Reflection API.
+ *	Scans an error message for bad -code / -level directives. Returns a
+ *	modified copy with such directives corrected, and the input if it had
+ *	no problems.
+ *
+ * Results:
+ *	A Tcl_Obj*
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+FixLevelCode(
+    Tcl_Obj *msg)
+{
+    int explicitResult, numOptions, lc, lcn;
+    Tcl_Obj **lv, **lvn;
+    int res, i, j, val, lignore, cignore;
+    int newlevel = -1, newcode = -1;
+
+    /* ASSERT msg != NULL */
+
+    /*
+     * Process the caught message.
+     *
+     * Syntax = (option value)... ?message?
+     *
+     * Bad message syntax causes a panic, because the other side uses
+     * Tcl_GetReturnOptions and list construction functions to marshall the
+     * information. Hence an error means that we've got serious breakage.
+     */
+
+    res = Tcl_ListObjGetElements(NULL, msg, &lc, &lv);
+    if (res != TCL_OK) {
+	Tcl_Panic("Tcl_SetChannelError(Interp): Bad syntax of message");
+    }
+
+    explicitResult = (1 == (lc % 2));
+    numOptions = lc - explicitResult;
+
+    /*
+     * No options, nothing to do.
+     */
+
+    if (numOptions == 0) {
+	return msg;
+    }
+
+    /*
+     * Check for -code x, x != 1|error, and -level x, x != 0
+     */
+
+    for (i = 0; i < numOptions; i += 2) {
+	if (0 == strcmp(TclGetString(lv[i]), "-code")) {
+	    /*
+	     * !"error", !integer, integer != 1 (numeric code for error)
+	     */
+
+	    res = TclGetIntFromObj(NULL, lv[i+1], &val);
+	    if (((res == TCL_OK) && (val != 1)) || ((res != TCL_OK) &&
+		    (0 != strcmp(TclGetString(lv[i+1]), "error")))) {
+		newcode = 1;
+	    }
+	} else if (0 == strcmp(TclGetString(lv[i]), "-level")) {
+	    /*
+	     * !integer, integer != 0
+	     */
+
+	    res = TclGetIntFromObj(NULL, lv [i+1], &val);
+	    if ((res != TCL_OK) || (val != 0)) {
+		newlevel = 0;
+	    }
+	}
+    }
+
+    /*
+     * -code, -level are either not present or ok. Nothing to do.
+     */
+
+    if ((newlevel < 0) && (newcode < 0)) {
+	return msg;
+    }
+
+    lcn = numOptions;
+    if (explicitResult) {
+	lcn ++;
+    }
+    if (newlevel >= 0) {
+	lcn += 2;
+    }
+    if (newcode >= 0) {
+	lcn += 2;
+    }
+
+    lvn = (Tcl_Obj **) ckalloc(lcn * sizeof(Tcl_Obj *));
+
+    /*
+     * New level/code information is spliced into the first occurence of
+     * -level, -code, further occurences are ignored. The options cannot be
+     * not present, we would not come here. Options which are ok are simply
+     * copied over.
+     */
+
+    lignore = cignore = 0;
+    for (i=0, j=0; i<numOptions; i+=2) {
+	if (0 == strcmp(TclGetString(lv[i]), "-level")) {
+	    if (newlevel >= 0) {
+		lvn[j++] = lv[i];
+		lvn[j++] = Tcl_NewIntObj(newlevel);
+		newlevel = -1;
+		lignore = 1;
+		continue;
+	    } else if (lignore) {
+		continue;
+	    }
+	} else if (0 == strcmp(TclGetString(lv[i]), "-code")) {
+	    if (newcode >= 0) {
+		lvn[j++] = lv[i];
+		lvn[j++] = Tcl_NewIntObj(newcode);
+		newcode = -1;
+		cignore = 1;
+		continue;
+	    } else if (cignore) {
+		continue;
+	    }
+	}
+
+	/*
+	 * Keep everything else, possibly copied down.
+	 */
+
+	lvn[j++] = lv[i];
+	lvn[j++] = lv[i+1];
+    }
+    if (newlevel >= 0) {
+	Tcl_Panic("Defined newlevel not used in rewrite");
+    }
+    if (newcode >= 0) {
+	Tcl_Panic("Defined newcode not used in rewrite");
+    }
+
+    if (explicitResult) {
+	lvn[j++] = lv[i];
+    }
+
+    msg = Tcl_NewListObj(j, lvn);
+
+    ckfree((char *) lvn);
+    return msg;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetChannelErrorInterp --
+ *
+ *	TIP #219, Tcl Channel Reflection API.
+ *	Return the message stored by the channel driver.
+ *
+ * Results:
+ *	Tcl error message object.
+ *
+ * Side effects:
+ *	Resets the stored data to NULL.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_GetChannelErrorInterp(
+    Tcl_Interp *interp,		/* Interp to query. */
+    Tcl_Obj **msg)		/* Place for error message. */
+{
+    Interp *iPtr = (Interp *) interp;
+
+    *msg = iPtr->chanMsg;
+    iPtr->chanMsg = NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetChannelError --
+ *
+ *	TIP #219, Tcl Channel Reflection API.
+ *	Return the message stored by the channel driver.
+ *
+ * Results:
+ *	Tcl error message object.
+ *
+ * Side effects:
+ *	Resets the stored data to NULL.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_GetChannelError(
+    Tcl_Channel chan,		/* Channel to query. */
+    Tcl_Obj **msg)		/* Place for error message. */
+{
+    ChannelState *statePtr = ((Channel *) chan)->state;
+
+    *msg = statePtr->chanMsg;
+    statePtr->chanMsg = NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_ChannelTruncateProc --
+ *
+ *	TIP #208 (subsection relating to truncation, based on TIP #206).
+ *	Return the Tcl_DriverTruncateProc of the channel type.
+ *
+ * Results:
+ *	A pointer to the proc.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_DriverTruncateProc *
+Tcl_ChannelTruncateProc(
+    const Tcl_ChannelType *chanTypePtr)
+				/* Pointer to channel type. */
+{
+    if (HaveVersion(chanTypePtr, TCL_CHANNEL_VERSION_5)) {
+	return chanTypePtr->truncateProc;
+    } else {
+	return NULL;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DupChannelIntRep --
+ *
+ *	Initialize the internal representation of a new Tcl_Obj to a copy of
+ *	the internal representation of an existing string object.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	copyPtr's internal rep is set to a copy of srcPtr's internal
+ *	representation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DupChannelIntRep(
+    register Tcl_Obj *srcPtr,	/* Object with internal rep to copy. Must have
+				 * an internal rep of type "Channel". */
+    register Tcl_Obj *copyPtr)	/* Object with internal rep to set. Must not
+				 * currently have an internal rep.*/
+{
+    ChannelState *statePtr  = GET_CHANNELSTATE(srcPtr);
+    Interp       *interpPtr = GET_CHANNELINTERP(srcPtr);
+
+    SET_CHANNELSTATE(copyPtr, statePtr);
+    SET_CHANNELINTERP(copyPtr, interpPtr);
+    Tcl_Preserve((ClientData) statePtr);
+    copyPtr->typePtr = &tclChannelType;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetChannelFromAny --
+ *
+ *	Create an internal representation of type "Channel" for an object.
+ *
+ * Results:
+ *	This operation always succeeds and returns TCL_OK.
+ *
+ * Side effects:
+ *	Any old internal reputation for objPtr is freed and the internal
+ *	representation is set to "Channel".
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SetChannelFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
+{
+    ChannelState *statePtr;
+    Interp       *interpPtr;
+
+    if (interp == NULL) {
+	return TCL_ERROR;
+    }
+    if (objPtr->typePtr == &tclChannelType) {
+	/*
+	 * The channel is valid until any call to DetachChannel occurs.
+	 * Ensure consistency checks are done.
+	 */
+	statePtr  = GET_CHANNELSTATE(objPtr);
+	interpPtr = GET_CHANNELINTERP(objPtr);
+	if (statePtr->flags & (CHANNEL_TAINTED|CHANNEL_CLOSED)) {
+	    ResetFlag(statePtr, CHANNEL_TAINTED);
+	    Tcl_Release((ClientData) statePtr);
+	    UpdateStringOfChannel(objPtr);
+	    objPtr->typePtr = NULL;
+	} else if (interpPtr != (Interp*) interp) {
+	    Tcl_Release((ClientData) statePtr);
+	    UpdateStringOfChannel(objPtr);
+	    objPtr->typePtr = NULL;
+	}
+    }
+    if (objPtr->typePtr != &tclChannelType) {
+	Tcl_Channel chan;
+
+	/*
+	 * We need a valid string with which to check for a valid channel, but
+	 * make sure not to free internal rep until validated. [Bug 1847044]
+	 */
+	if ((objPtr->typePtr != NULL) && (objPtr->bytes == NULL)) {
+	    objPtr->typePtr->updateStringProc(objPtr);
+	}
+
+	chan = Tcl_GetChannel(interp, objPtr->bytes, NULL);
+	if (chan == NULL) {
+	    return TCL_ERROR;
+	}
+
+	TclFreeIntRep(objPtr);
+	statePtr = ((Channel *)chan)->state;
+	Tcl_Preserve((ClientData) statePtr);
+	SET_CHANNELSTATE(objPtr, statePtr);
+	SET_CHANNELINTERP(objPtr, interp);
+	objPtr->typePtr = &tclChannelType;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UpdateStringOfChannel --
+ *
+ *	Update the string representation for an object whose internal
+ *	representation is "Channel".
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The object's string may be set by converting its Unicode represention
+ *	to UTF format.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UpdateStringOfChannel(
+    Tcl_Obj *objPtr)		/* Object with string rep to update. */
+{
+    if (objPtr->bytes == NULL) {
+	ChannelState *statePtr = GET_CHANNELSTATE(objPtr);
+	const char *name = statePtr->channelName;
+	if (name) {
+	    size_t len = strlen(name);
+	    objPtr->bytes = (char *) ckalloc(len + 1);
+	    objPtr->length = len;
+	    memcpy(objPtr->bytes, name, len);
+	} else {
+	    objPtr->bytes = tclEmptyStringRep;
+	    objPtr->length = 0;
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeChannelIntRep --
+ *
+ *	Release statePtr storage.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May cause state to be freed.
+ *
+ *----------------------------------------------------------------------
+ */
 
+static void
+FreeChannelIntRep(
+    Tcl_Obj *objPtr)		/* Object with internal rep to free. */
+{
+    Tcl_Release((ClientData) GET_CHANNELSTATE(objPtr));
+}
+
 #if 0
-/* For future debugging work, a simple function to print the flags of
- * a channel in semi-readable form.
+/*
+ * For future debugging work, a simple function to print the flags of a
+ * channel in semi-readable form.
  */
 
 static int
-DumpFlags (str, flags)
-     char* str;
-     int flags;
-{
-  char buf [20];
-  int i = 0;
-
-  if (flags & TCL_READABLE)           {buf[i] = 'r';} else {buf [i]='_';}; i++;
-  if (flags & TCL_WRITABLE)           {buf[i] = 'w';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_NONBLOCKING)    {buf[i] = 'n';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_LINEBUFFERED)   {buf[i] = 'l';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_UNBUFFERED)     {buf[i] = 'u';} else {buf [i]='_';}; i++;
-  if (flags & BUFFER_READY)           {buf[i] = 'R';} else {buf [i]='_';}; i++;
-  if (flags & BG_FLUSH_SCHEDULED)     {buf[i] = 'F';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_CLOSED)         {buf[i] = 'c';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_EOF)            {buf[i] = 'E';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_STICKY_EOF)     {buf[i] = 'S';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_BLOCKED)        {buf[i] = 'B';} else {buf [i]='_';}; i++;
-  if (flags & INPUT_SAW_CR)           {buf[i] = '/';} else {buf [i]='_';}; i++;
-  if (flags & INPUT_NEED_NL)          {buf[i] = '*';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_DEAD)           {buf[i] = 'D';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_RAW_MODE)       {buf[i] = 'R';} else {buf [i]='_';}; i++;
+DumpFlags(
+    char *str,
+    int flags)
+{
+    char buf[20];
+    int i = 0;
+
+#define ChanFlag(chr,bit) (buf[i++] = ((flags & (bit)) ? (chr) : '_'))
+
+    ChanFlag('r', TCL_READABLE);
+    ChanFlag('w', TCL_WRITABLE);
+    ChanFlag('n', CHANNEL_NONBLOCKING);
+    ChanFlag('l', CHANNEL_LINEBUFFERED);
+    ChanFlag('u', CHANNEL_UNBUFFERED);
+    ChanFlag('R', BUFFER_READY);
+    ChanFlag('F', BG_FLUSH_SCHEDULED);
+    ChanFlag('c', CHANNEL_CLOSED);
+    ChanFlag('E', CHANNEL_EOF);
+    ChanFlag('S', CHANNEL_STICKY_EOF);
+    ChanFlag('B', CHANNEL_BLOCKED);
+    ChanFlag('/', INPUT_SAW_CR);
+    ChanFlag('*', INPUT_NEED_NL);
+    ChanFlag('D', CHANNEL_DEAD);
+    ChanFlag('R', CHANNEL_RAW_MODE);
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-  if (flags & CHANNEL_TIMER_FEV)      {buf[i] = 'T';} else {buf [i]='_';}; i++;
-  if (flags & CHANNEL_HAS_MORE_DATA)  {buf[i] = 'H';} else {buf [i]='_';}; i++;
+    ChanFlag('T', CHANNEL_TIMER_FEV);
+    ChanFlag('H', CHANNEL_HAS_MORE_DATA);
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
-  if (flags & CHANNEL_INCLOSE)        {buf[i] = 'x';} else {buf [i]='_';}; i++;
-  buf [i] ='\0';
+    ChanFlag('x', CHANNEL_INCLOSE);
+
+    buf[i] ='\0';
 
-  fprintf (stderr,"%s: %s\n", str, buf); fflush(stderr);
-  return 0;
+    fprintf(stderr, "%s: %s\n", str, buf);
+    return 0;
 }
 #endif
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclIO.h b/generic/tclIO.h
index ec34372..ebf2ef7 100644
--- a/generic/tclIO.h
+++ b/generic/tclIO.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * tclIO.h --
  *
  *	This file provides the generic portions (those that are the same on
@@ -7,16 +7,16 @@
  * Copyright (c) 1998-2000 Ajuba Solutions
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 /*
  * Make sure that both EAGAIN and EWOULDBLOCK are defined. This does not
- * compile on systems where neither is defined. We want both defined so
- * that we can test safely for both. In the code we still have to test for
- * both because there may be systems on which both are defined and have
- * different values.
+ * compile on systems where neither is defined. We want both defined so that
+ * we can test safely for both. In the code we still have to test for both
+ * because there may be systems on which both are defined and have different
+ * values.
  */
 
 #if ((!defined(EWOULDBLOCK)) && (defined(EAGAIN)))
@@ -26,7 +26,7 @@
 #   define EAGAIN EWOULDBLOCK
 #endif
 #if ((!defined(EAGAIN)) && (!defined(EWOULDBLOCK)))
-error one of EWOULDBLOCK or EAGAIN must be defined
+#error one of EWOULDBLOCK or EAGAIN must be defined
 #endif
 
 /*
@@ -37,28 +37,28 @@ error one of EWOULDBLOCK or EAGAIN must be defined
 
 typedef struct ChannelBuffer {
     int nextAdded;		/* The next position into which a character
-                                 * will be put in the buffer. */
-    int nextRemoved;		/* Position of next byte to be removed
-                                 * from the buffer. */
+				 * will be put in the buffer. */
+    int nextRemoved;		/* Position of next byte to be removed from
+				 * the buffer. */
     int bufLength;		/* How big is the buffer? */
     struct ChannelBuffer *nextPtr;
     				/* Next buffer in chain. */
     char buf[4];		/* Placeholder for real buffer. The real
-                                 * buffer occuppies this space + bufSize-4
-                                 * bytes. This must be the last field in
-                                 * the structure. */
+				 * buffer occuppies this space + bufSize-4
+				 * bytes. This must be the last field in the
+				 * structure. */
 } ChannelBuffer;
 
 #define CHANNELBUFFER_HEADER_SIZE	(sizeof(ChannelBuffer) - 4)
 
 /*
  * How much extra space to allocate in buffer to hold bytes from previous
- * buffer (when converting to UTF-8) or to hold bytes that will go to
- * next buffer (when converting from UTF-8).
+ * buffer (when converting to UTF-8) or to hold bytes that will go to next
+ * buffer (when converting from UTF-8).
  */
- 
-#define BUFFER_PADDING	    16
- 
+
+#define BUFFER_PADDING		16
+
 /*
  * The following defines the *default* buffer size for channels.
  */
@@ -67,15 +67,15 @@ typedef struct ChannelBuffer {
 
 /*
  * The following structure describes the information saved from a call to
- * "fileevent". This is used later when the event being waited for to
- * invoke the saved script in the interpreter designed in this record.
+ * "fileevent". This is used later when the event being waited for to invoke
+ * the saved script in the interpreter designed in this record.
  */
 
 typedef struct EventScriptRecord {
     struct Channel *chanPtr;	/* The channel for which this script is
-				 * registered. This is used only when an
-				 * error occurs during evaluation of the
-				 * script, to delete the handler. */
+				 * registered. This is used only when an error
+				 * occurs during evaluation of the script, to
+				 * delete the handler. */
     Tcl_Obj *scriptPtr;		/* Script to invoke. */
     Tcl_Interp *interp;		/* In what interpreter to invoke script? */
     int mask;			/* Events must overlap current mask for the
@@ -87,29 +87,28 @@ typedef struct EventScriptRecord {
 /*
  * struct Channel:
  *
- * One of these structures is allocated for each open channel. It contains data
- * specific to the channel but which belongs to the generic part of the Tcl
- * channel mechanism, and it points at an instance specific (and type
- * specific) * instance data, and at a channel type structure.
+ * One of these structures is allocated for each open channel. It contains
+ * data specific to the channel but which belongs to the generic part of the
+ * Tcl channel mechanism, and it points at an instance specific (and type
+ * specific) instance data, and at a channel type structure.
  */
 
 typedef struct Channel {
     struct ChannelState *state; /* Split out state information */
-
-    ClientData instanceData;	/* Instance-specific data provided by
-				 * creator of channel. */
+    ClientData instanceData;	/* Instance-specific data provided by creator
+				 * of channel. */
     Tcl_ChannelType *typePtr;	/* Pointer to channel type structure. */
-
     struct Channel *downChanPtr;/* Refers to channel this one was stacked
-				 * upon.  This reference is NULL for normal
-				 * channels.  See Tcl_StackChannel. */
+				 * upon. This reference is NULL for normal
+				 * channels. See Tcl_StackChannel. */
     struct Channel *upChanPtr;	/* Refers to the channel above stacked this
 				 * one. NULL for the top most channel. */
 
     /*
-     * Intermediate buffers to hold pre-read data for consumption by a
-     * newly stacked transformation. See 'Tcl_StackChannel'.
+     * Intermediate buffers to hold pre-read data for consumption by a newly
+     * stacked transformation. See 'Tcl_StackChannel'.
      */
+
     ChannelBuffer *inQueueHead;	/* Points at first buffer in input queue. */
     ChannelBuffer *inQueueTail;	/* Points at last buffer in input queue. */
 } Channel;
@@ -117,54 +116,52 @@ typedef struct Channel {
 /*
  * struct ChannelState:
  *
- * One of these structures is allocated for each open channel. It contains data
- * specific to the channel but which belongs to the generic part of the Tcl
- * channel mechanism, and it points at an instance specific (and type
- * specific) * instance data, and at a channel type structure.
+ * One of these structures is allocated for each open channel. It contains
+ * data specific to the channel but which belongs to the generic part of the
+ * Tcl channel mechanism, and it points at an instance specific (and type
+ * specific) instance data, and at a channel type structure.
  */
 
 typedef struct ChannelState {
     CONST char *channelName;	/* The name of the channel instance in Tcl
-				 * commands. Storage is owned by the generic IO
-				 * code, is dynamically allocated. */
+				 * commands. Storage is owned by the generic
+				 * IO code, is dynamically allocated. */
     int	flags;			/* ORed combination of the flags defined
 				 * below. */
     Tcl_Encoding encoding;	/* Encoding to apply when reading or writing
-				 * data on this channel.  NULL means no
+				 * data on this channel. NULL means no
 				 * encoding is applied to data. */
     Tcl_EncodingState inputEncodingState;
-				/* Current encoding state, used when converting
-				 * input data bytes to UTF-8. */
+				/* Current encoding state, used when
+				 * converting input data bytes to UTF-8. */
     int inputEncodingFlags;	/* Encoding flags to pass to conversion
 				 * routine when converting input data bytes to
-				 * UTF-8.  May be TCL_ENCODING_START before
+				 * UTF-8. May be TCL_ENCODING_START before
 				 * converting first byte and TCL_ENCODING_END
 				 * when EOF is seen. */
     Tcl_EncodingState outputEncodingState;
-				/* Current encoding state, used when converting
-				 * UTF-8 to output data bytes. */
+				/* Current encoding state, used when
+				 * converting UTF-8 to output data bytes. */
     int outputEncodingFlags;	/* Encoding flags to pass to conversion
 				 * routine when converting UTF-8 to output
-				 * data bytes.  May be TCL_ENCODING_START
+				 * data bytes. May be TCL_ENCODING_START
 				 * before converting first byte and
 				 * TCL_ENCODING_END when EOF is seen. */
     TclEolTranslation inputTranslation;
 				/* What translation to apply for end of line
-				 * sequences on input? */    
+				 * sequences on input? */
     TclEolTranslation outputTranslation;
-				/* What translation to use for generating
-				 * end of line sequences in output? */
-    int inEofChar;		/* If nonzero, use this as a signal of EOF
-				 * on input. */
-    int outEofChar;             /* If nonzero, append this to the channel
-				 * when it is closed if it is open for
-				 * writing. */
+				/* What translation to use for generating end
+				 * of line sequences in output? */
+    int inEofChar;		/* If nonzero, use this as a signal of EOF on
+				 * input. */
+    int outEofChar;		/* If nonzero, append this to the channel when
+				 * it is closed if it is open for writing. */
     int unreportedError;	/* Non-zero if an error report was deferred
 				 * because it happened in the background. The
 				 * value is the POSIX error code. */
     int refCount;		/* How many interpreters hold references to
 				 * this IO channel? */
-
     struct CloseCallback *closeCbPtr;
 				/* Callbacks registered to be called when the
 				 * channel is closed. */
@@ -174,39 +171,48 @@ typedef struct ChannelState {
     ChannelBuffer *curOutPtr;	/* Current output buffer being filled. */
     ChannelBuffer *outQueueHead;/* Points at first buffer in output queue. */
     ChannelBuffer *outQueueTail;/* Points at last buffer in output queue. */
-
     ChannelBuffer *saveInBufPtr;/* Buffer saved for input queue - eliminates
 				 * need to allocate a new buffer for "gets"
 				 * that crosses buffer boundaries. */
     ChannelBuffer *inQueueHead;	/* Points at first buffer in input queue. */
     ChannelBuffer *inQueueTail;	/* Points at last buffer in input queue. */
-
-    struct ChannelHandler *chPtr;/* List of channel handlers registered
-				  * for this channel. */
+    struct ChannelHandler *chPtr;/* List of channel handlers registered for
+				  * this channel. */
     int interestMask;		/* Mask of all events this channel has
 				 * handlers for. */
     EventScriptRecord *scriptRecordPtr;
-				/* Chain of all scripts registered for
-				 * event handlers ("fileevent") on this
-				 * channel. */
-
+				/* Chain of all scripts registered for event
+				 * handlers ("fileevent") on this channel. */
     int bufSize;		/* What size buffers to allocate? */
     Tcl_TimerToken timer;	/* Handle to wakeup timer for this channel. */
     struct CopyState *csPtrR;	/* State of background copy for which channel
 				 * is input, or NULL. */
     struct CopyState *csPtrW;	/* State of background copy for which channel
 				 * is output, or NULL. */
-    Channel *topChanPtr;	/* Refers to topmost channel in a stack.
-				 * Never NULL. */
+    Channel *topChanPtr;	/* Refers to topmost channel in a stack. Never
+				 * NULL. */
     Channel *bottomChanPtr;	/* Refers to bottommost channel in a stack.
 				 * This channel can be relied on to live as
 				 * long as the channel state. Never NULL. */
     struct ChannelState *nextCSPtr;
 				/* Next in list of channels currently open. */
-    Tcl_ThreadId managingThread; /* TIP #10: Id of the thread managing
-				  * this stack of channels. */
+    Tcl_ThreadId managingThread;/* TIP #10: Id of the thread managing this
+				 * stack of channels. */
+
+    /*
+     * TIP #219 ... Info for the I/O system ...
+     * Error message set by channel drivers, for the propagation of arbitrary
+     * Tcl errors. This information, if present (chanMsg not NULL), takes
+     * precedence over a posix error code returned by a channel operation.
+     */
+
+    Tcl_Obj* chanMsg;
+    Tcl_Obj* unreportedMsg;     /* Non-NULL if an error report was deferred
+				 * because it happened in the background. The
+				 * value is the chanMg, if any. #219's
+				 * companion to 'unreportedError'. */
 } ChannelState;
-    
+
 /*
  * Values for the flags field in Channel. Any ORed combination of the
  * following flags can be stored in the field. These flags record various
@@ -214,91 +220,98 @@ typedef struct ChannelState {
  * the channel can also have TCL_READABLE (1<<1) and TCL_WRITABLE (1<<2) set.
  */
 
-#define CHANNEL_NONBLOCKING	(1<<3)	/* Channel is currently in
-					 * nonblocking mode. */
+#define CHANNEL_NONBLOCKING	(1<<3)	/* Channel is currently in nonblocking
+					 * mode. */
 #define CHANNEL_LINEBUFFERED	(1<<4)	/* Output to the channel must be
 					 * flushed after every newline. */
 #define CHANNEL_UNBUFFERED	(1<<5)	/* Output to the channel must always
 					 * be flushed immediately. */
 #define BUFFER_READY		(1<<6)	/* Current output buffer (the
-					 * curOutPtr field in the
-                                         * channel structure) should be
-                                         * output as soon as possible even
-                                         * though it may not be full. */
-#define BG_FLUSH_SCHEDULED	(1<<7)	/* A background flush of the
-					 * queued output buffers has been
-                                         * scheduled. */
-#define CHANNEL_CLOSED		(1<<8)	/* Channel has been closed. No
-					 * further Tcl-level IO on the
-                                         * channel is allowed. */
-#define CHANNEL_EOF		(1<<9)	/* EOF occurred on this channel.
-					 * This bit is cleared before every
-                                         * input operation. */
-#define CHANNEL_STICKY_EOF	(1<<10)	/* EOF occurred on this channel because
-					 * we saw the input eofChar. This bit
-                                         * prevents clearing of the EOF bit
-                                         * before every input operation. */
-#define CHANNEL_BLOCKED		(1<<11)	/* EWOULDBLOCK or EAGAIN occurred
-					 * on this channel. This bit is
-					 * cleared before every input or
-					 * output operation. */
+					 * curOutPtr field in the channel
+					 * structure) should be output as soon
+					 * as possible even though it may not
+					 * be full. */
+#define BG_FLUSH_SCHEDULED	(1<<7)	/* A background flush of the queued
+					 * output buffers has been
+					 * scheduled. */
+#define CHANNEL_CLOSED		(1<<8)	/* Channel has been closed. No further
+					 * Tcl-level IO on the channel is
+					 * allowed. */
+#define CHANNEL_EOF		(1<<9)	/* EOF occurred on this channel. This
+					 * bit is cleared before every input
+					 * operation. */
+#define CHANNEL_STICKY_EOF	(1<<10)	/* EOF occurred on this channel
+					 * because we saw the input
+					 * eofChar. This bit prevents clearing
+					 * of the EOF bit before every input
+					 * operation. */
+#define CHANNEL_BLOCKED		(1<<11)	/* EWOULDBLOCK or EAGAIN occurred on
+					 * this channel. This bit is cleared
+					 * before every input or output
+					 * operation. */
 #define INPUT_SAW_CR		(1<<12)	/* Channel is in CRLF eol input
-					 * translation mode and the last
-                                         * byte seen was a "\r". */
+					 * translation mode and the last byte
+					 * seen was a "\r". */
 #define INPUT_NEED_NL		(1<<15)	/* Saw a '\r' at end of last buffer,
 					 * and there should be a '\n' at
 					 * beginning of next buffer. */
-#define CHANNEL_DEAD		(1<<13)	/* The channel has been closed by
-					 * the exit handler (on exit) but
-                                         * not deallocated. When any IO
-                                         * operation sees this flag on a
-                                         * channel, it does not call driver
-                                         * level functions to avoid referring
-                                         * to deallocated data. */
+#define CHANNEL_DEAD		(1<<13)	/* The channel has been closed by the
+					 * exit handler (on exit) but not
+					 * deallocated. When any IO operation
+					 * sees this flag on a channel, it
+					 * does not call driver level
+					 * functions to avoid referring to
+					 * deallocated data. */
 #define CHANNEL_NEED_MORE_DATA	(1<<14)	/* The last input operation failed
 					 * because there was not enough data
-					 * to complete the operation.  This
-					 * flag is set when gets fails to
-					 * get a complete line or when read
-					 * fails to get a complete character.
-					 * When set, file events will not be
+					 * to complete the operation. This
+					 * flag is set when gets fails to get
+					 * a complete line or when read fails
+					 * to get a complete character. When
+					 * set, file events will not be
 					 * delivered for buffered data until
-					 * the state of the channel changes. */
+					 * the state of the channel
+					 * changes. */
 #define CHANNEL_RAW_MODE	(1<<16)	/* When set, notes that the Raw API is
 					 * being used. */
 #ifdef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-#define CHANNEL_TIMER_FEV       (1<<17) /* When set the event we are
-					 * notified by is a fileevent
-					 * generated by a timer. We
-					 * don't know if the driver
-					 * has more data and should
-					 * not try to read from it. If
-					 * the system needs more than
-					 * is in the buffers out read
-					 * routines will simulate a
-					 * short read (0 characters
-					 * read) */
-#define CHANNEL_HAS_MORE_DATA   (1<<18) /* Set by NotifyChannel for a
-					 * channel if and only if the
-					 * channel is configured
-					 * non-blocking, the driver
+#define CHANNEL_TIMER_FEV	(1<<17)	/* When set the event we are notified
+					 * by is a fileevent generated by a
+					 * timer. We don't know if the driver
+					 * has more data and should not try to
+					 * read from it. If the system needs
+					 * more than is in the buffers out
+					 * read routines will simulate a short
+					 * read (0 characters read) */
+#define CHANNEL_HAS_MORE_DATA   (1<<18) /* Set by NotifyChannel for a channel
+					 * if and only if the channel is
+					 * configured non-blocking, the driver
 					 * for said channel has no
-					 * blockmodeproc, and data has
-					 * arrived for reading at the
-					 * OS level). A GetInput will
-					 * pass reading from the
+					 * blockmodeproc, and data has arrived
+					 * for reading at the OS level). A
+					 * GetInput will pass reading from the
 					 * driver if the channel is
-					 * non-blocking, without
-					 * blockmode proc and the flag
-					 * has not been set. A read
-					 * will be performed if the
-					 * flag is set. This will
-					 * reset the flag as well. */
+					 * non-blocking, without blockmode
+					 * proc and the flag has not been set.
+					 * A read will be performed if the
+					 * flag is set. This will reset the
+					 * flag as well. */
 #endif /* TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING */
 
-#define CHANNEL_INCLOSE		(1<<19)	/* Channel is currently being
-					 * closed. Its structures are
-					 * still live and usable, but
-					 * it may not be closed again
-					 * from within the close handler.
-					 */
+#define CHANNEL_INCLOSE		(1<<19)	/* Channel is currently being closed.
+					 * Its structures are still live and
+					 * usable, but it may not be closed
+					 * again from within the close
+					 * handler. */
+#define CHANNEL_TAINTED		(1<<20)	/* Channel stack structure has changed.
+					 * Used by Channel Tcl_Obj type to
+					 * determine if we have to revalidate
+					 * the channel. */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclIOCmd.c b/generic/tclIOCmd.c
index 635490c..21dcd71 100644
--- a/generic/tclIOCmd.c
+++ b/generic/tclIOCmd.c
@@ -1,16 +1,15 @@
-/* 
+/*
  * tclIOCmd.c --
  *
  *	Contains the definitions of most of the Tcl commands relating to IO.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
  * Callback structure for accept callback in a TCP server.
@@ -22,26 +21,75 @@ typedef struct AcceptCallback {
 } AcceptCallback;
 
 /*
+ * Thread local storage used to maintain a per-thread stdout channel obj.
+ * It must be per-thread because of std channel limitations.
+ */
+
+typedef struct ThreadSpecificData {
+    int initialized;		/* Set to 1 when the module is initialized. */
+    Tcl_Obj *stdoutObjPtr;	/* Cached stdout channel Tcl_Obj */
+} ThreadSpecificData;
+
+static Tcl_ThreadDataKey dataKey;
+
+/*
  * Static functions for this file:
  */
 
-static void	AcceptCallbackProc _ANSI_ARGS_((ClientData callbackData,
-	            Tcl_Channel chan, char *address, int port));
-static void	RegisterTcpServerInterpCleanup _ANSI_ARGS_((Tcl_Interp *interp,
-	            AcceptCallback *acceptCallbackPtr));
-static void	TcpAcceptCallbacksDeleteProc _ANSI_ARGS_((
-		    ClientData clientData, Tcl_Interp *interp));
-static void	TcpServerCloseProc _ANSI_ARGS_((ClientData callbackData));
-static void	UnregisterTcpServerInterpCleanupProc _ANSI_ARGS_((
-		    Tcl_Interp *interp, AcceptCallback *acceptCallbackPtr));
+static void		FinalizeIOCmdTSD(ClientData clientData);
+static void		AcceptCallbackProc(ClientData callbackData,
+			    Tcl_Channel chan, char *address, int port);
+static int		ChanPendingObjCmd(ClientData unused,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		ChanTruncateObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static void		RegisterTcpServerInterpCleanup(Tcl_Interp *interp,
+			    AcceptCallback *acceptCallbackPtr);
+static void		TcpAcceptCallbacksDeleteProc(ClientData clientData,
+			    Tcl_Interp *interp);
+static void		TcpServerCloseProc(ClientData callbackData);
+static void		UnregisterTcpServerInterpCleanupProc(
+			    Tcl_Interp *interp,
+			    AcceptCallback *acceptCallbackPtr);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FinalizeIOCmdTSD --
+ *
+ *	Release the storage associated with the per-thread cache.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FinalizeIOCmdTSD(
+    ClientData clientData)	/* Not used. */
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    if (tsdPtr->stdoutObjPtr != NULL) {
+	Tcl_DecrRefCount(tsdPtr->stdoutObjPtr);
+	tsdPtr->stdoutObjPtr = NULL;
+    }
+    tsdPtr->initialized = 0;
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_PutsObjCmd --
  *
- *	This procedure is invoked to process the "puts" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "puts" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -54,94 +102,106 @@ static void	UnregisterTcpServerInterpCleanupProc _ANSI_ARGS_((
 
 	/* ARGSUSED */
 int
-Tcl_PutsObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_PutsObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Channel chan;			/* The channel to puts on. */
-    Tcl_Obj *string;			/* String to write. */
-    int newline;			/* Add a newline at end? */
-    char *channelId;			/* Name of channel for puts. */
-    int result;				/* Result of puts operation. */
-    int mode;				/* Mode in which channel is opened. */
+    Tcl_Channel chan;		/* The channel to puts on. */
+    Tcl_Obj *string;		/* String to write. */
+    Tcl_Obj *chanObjPtr = NULL;	/* channel object. */
+    int newline;		/* Add a newline at end? */
+    int result;			/* Result of puts operation. */
+    int mode;			/* Mode in which channel is opened. */
+    ThreadSpecificData *tsdPtr;
 
     switch (objc) {
-    case 2: /* puts $x */
+    case 2: /* [puts $x] */
 	string = objv[1];
 	newline = 1;
-	channelId = "stdout";
 	break;
 
-    case 3: /* puts -nonewline $x  or  puts $chan $x */ 
-	if (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0) {
+    case 3: /* [puts -nonewline $x] or [puts $chan $x] */
+	if (strcmp(TclGetString(objv[1]), "-nonewline") == 0) {
 	    newline = 0;
-	    channelId = "stdout";
 	} else {
 	    newline = 1;
-	    channelId = Tcl_GetString(objv[1]);
+	    chanObjPtr = objv[1];
 	}
 	string = objv[2];
 	break;
 
-    case 4: /* puts -nonewline $chan $x  or  puts $chan $x nonewline */
-	if (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0) {
-	    channelId = Tcl_GetString(objv[2]);
+    case 4: /* [puts -nonewline $chan $x] or [puts $chan $x nonewline] */
+	newline = 0;
+	if (strcmp(TclGetString(objv[1]), "-nonewline") == 0) {
+	    chanObjPtr = objv[2];
 	    string = objv[3];
-	} else {
+	    break;
+	} else if (strcmp(TclGetString(objv[3]), "nonewline") == 0) {
 	    /*
-	     * The code below provides backwards compatibility with an
-	     * old form of the command that is no longer recommended
-	     * or documented.
+	     * The code below provides backwards compatibility with an old
+	     * form of the command that is no longer recommended or
+	     * documented. See also [Bug #3151675]. Will be removed in Tcl 9,
+	     * maybe even earlier.
 	     */
 
-	    char *arg;
-	    int length;
-
-	    arg = Tcl_GetStringFromObj(objv[3], &length);
-	    if ((length != 9) || (strncmp(arg, "nonewline", (size_t) length) != 0)) {
-		Tcl_AppendResult(interp, "bad argument \"", arg,
-				 "\": should be \"nonewline\"",
-				 (char *) NULL);
-		return TCL_ERROR;
-	    }
-	    channelId = Tcl_GetString(objv[1]);
+	    chanObjPtr = objv[1];
 	    string = objv[2];
+	    break;
 	}
-	newline = 0;
-	break;
-
-    default: /* puts  or  puts some bad number of arguments... */
+	/* Fall through */
+    default:
+	/* [puts] or [puts some bad number of arguments...] */
 	Tcl_WrongNumArgs(interp, 1, objv, "?-nonewline? ?channelId? string");
 	return TCL_ERROR;
     }
 
-    chan = Tcl_GetChannel(interp, channelId, &mode);
-    if (chan == (Tcl_Channel) NULL) {
-        return TCL_ERROR;
+    if (chanObjPtr == NULL) {
+	tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	if (!tsdPtr->initialized) {
+	    tsdPtr->initialized = 1;
+	    TclNewLiteralStringObj(tsdPtr->stdoutObjPtr, "stdout");
+	    Tcl_IncrRefCount(tsdPtr->stdoutObjPtr);
+	    Tcl_CreateThreadExitHandler(FinalizeIOCmdTSD, NULL);
+	}
+	chanObjPtr = tsdPtr->stdoutObjPtr;
+    }
+    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
+	return TCL_ERROR;
     }
     if ((mode & TCL_WRITABLE) == 0) {
-	Tcl_AppendResult(interp, "channel \"", channelId,
-                "\" wasn't opened for writing", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
+		"\" wasn't opened for writing", NULL);
+	return TCL_ERROR;
     }
 
     result = Tcl_WriteObj(chan, string);
     if (result < 0) {
-        goto error;
+	goto error;
     }
     if (newline != 0) {
-        result = Tcl_WriteChars(chan, "\n", 1);
-        if (result < 0) {
-            goto error;
-        }
+	result = Tcl_WriteChars(chan, "\n", 1);
+	if (result < 0) {
+	    goto error;
+	}
     }
     return TCL_OK;
 
-    error:
-    Tcl_AppendResult(interp, "error writing \"", channelId, "\": ",
-	    Tcl_PosixError(interp), (char *) NULL);
+    /*
+     * TIP #219.
+     * Capture error messages put by the driver into the bypass area and put
+     * them into the regular interpreter result. Fall back to the regular
+     * message if nothing was found in the bypass.
+     */
+
+  error:
+    if (!TclChanCaughtErrorBypass(interp, chan)) {
+	Tcl_AppendResult(interp, "error writing \"",
+		TclGetString(chanObjPtr), "\": ",
+		Tcl_PosixError(interp), NULL);
+    }
     return TCL_ERROR;
 }
 
@@ -150,8 +210,8 @@ Tcl_PutsObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_FlushObjCmd --
  *
- *	This procedure is called to process the Tcl "flush" command.
- *	See the user documentation for details on what it does.
+ *	This function is called to process the Tcl "flush" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -164,34 +224,43 @@ Tcl_PutsObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_FlushObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_FlushObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Channel chan;			/* The channel to flush on. */
-    char *channelId;
+    Tcl_Obj *chanObjPtr;
+    Tcl_Channel chan;		/* The channel to flush on. */
     int mode;
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
 	return TCL_ERROR;
     }
-    channelId = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, channelId, &mode);
-    if (chan == (Tcl_Channel) NULL) {
+    chanObjPtr = objv[1];
+    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
     if ((mode & TCL_WRITABLE) == 0) {
-	Tcl_AppendResult(interp, "channel \"", channelId,
-		"\" wasn't opened for writing", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
+		"\" wasn't opened for writing", NULL);
+	return TCL_ERROR;
     }
-    
+
     if (Tcl_Flush(chan) != TCL_OK) {
-	Tcl_AppendResult(interp, "error flushing \"", channelId, "\": ",
-		Tcl_PosixError(interp), (char *) NULL);
+	/*
+	 * TIP #219.
+	 * Capture error messages put by the driver into the bypass area and
+	 * put them into the regular interpreter result. Fall back to the
+	 * regular message if nothing was found in the bypass.
+	 */
+
+	if (!TclChanCaughtErrorBypass(interp, chan)) {
+	    Tcl_AppendResult(interp, "error flushing \"",
+		    TclGetString(chanObjPtr), "\": ",
+		    Tcl_PosixError(interp), NULL);
+	}
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -202,8 +271,8 @@ Tcl_FlushObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_GetsObjCmd --
  *
- *	This procedure is called to process the Tcl "gets" command.
- *	See the user documentation for details on what it does.
+ *	This function is called to process the Tcl "gets" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -216,54 +285,61 @@ Tcl_FlushObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_GetsObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_GetsObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Channel chan;			/* The channel to read from. */
-    int lineLen;			/* Length of line just read. */
-    int mode;				/* Mode in which channel is opened. */
-    char *name;
-    Tcl_Obj *linePtr;
+    Tcl_Channel chan;		/* The channel to read from. */
+    int lineLen;		/* Length of line just read. */
+    int mode;			/* Mode in which channel is opened. */
+    Tcl_Obj *linePtr, *chanObjPtr;
 
     if ((objc != 2) && (objc != 3)) {
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId ?varName?");
 	return TCL_ERROR;
     }
-    name = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, name, &mode);
-    if (chan == (Tcl_Channel) NULL) {
+    chanObjPtr = objv[1];
+    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
     if ((mode & TCL_READABLE) == 0) {
-	Tcl_AppendResult(interp, "channel \"", name,
-		"\" wasn't opened for reading", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
+		"\" wasn't opened for reading", NULL);
+	return TCL_ERROR;
     }
 
     linePtr = Tcl_NewObj();
-
     lineLen = Tcl_GetsObj(chan, linePtr);
     if (lineLen < 0) {
-        if (!Tcl_Eof(chan) && !Tcl_InputBlocked(chan)) {
+	if (!Tcl_Eof(chan) && !Tcl_InputBlocked(chan)) {
 	    Tcl_DecrRefCount(linePtr);
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendResult(interp, "error reading \"", name, "\": ",
-		    Tcl_PosixError(interp), (char *) NULL);
-            return TCL_ERROR;
-        }
-        lineLen = -1;
+
+	    /*
+	     * TIP #219. Capture error messages put by the driver into the
+	     * bypass area and put them into the regular interpreter result.
+	     * Fall back to the regular message if nothing was found in the
+	     * bypass.
+	     */
+
+	    if (!TclChanCaughtErrorBypass(interp, chan)) {
+		Tcl_ResetResult(interp);
+		Tcl_AppendResult(interp, "error reading \"",
+			TclGetString(chanObjPtr), "\": ",
+			Tcl_PosixError(interp), NULL);
+	    }
+	    return TCL_ERROR;
+	}
+	lineLen = -1;
     }
     if (objc == 3) {
 	if (Tcl_ObjSetVar2(interp, objv[2], NULL, linePtr,
 		TCL_LEAVE_ERR_MSG) == NULL) {
-	    Tcl_DecrRefCount(linePtr);
-            return TCL_ERROR;
-        }
+	    return TCL_ERROR;
+	}
 	Tcl_SetObjResult(interp, Tcl_NewIntObj(lineLen));
-        return TCL_OK;
+	return TCL_OK;
     } else {
 	Tcl_SetObjResult(interp, linePtr);
     }
@@ -275,8 +351,8 @@ Tcl_GetsObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_ReadObjCmd --
  *
- *	This procedure is invoked to process the Tcl "read" command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "read" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -289,94 +365,116 @@ Tcl_GetsObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ReadObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ReadObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Channel chan;		/* The channel to read from. */
     int newline, i;		/* Discard newline at end? */
     int toRead;			/* How many bytes to read? */
     int charactersRead;		/* How many characters were read? */
     int mode;			/* Mode in which channel is opened. */
-    char *name;
-    Tcl_Obj *resultPtr;
+    Tcl_Obj *resultPtr, *chanObjPtr;
 
     if ((objc != 2) && (objc != 3)) {
-	argerror:
+	Interp *iPtr;
+
+    argerror:
+	iPtr = (Interp *) interp;
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId ?numChars?");
-	Tcl_AppendResult(interp, " or \"", Tcl_GetString(objv[0]),
-		" ?-nonewline? channelId\"", (char *) NULL);
+
+	/*
+	 * Do not append directly; that makes ensembles using this command as
+	 * a subcommand produce the wrong message.
+	 */
+
+	iPtr->flags |= INTERP_ALTERNATE_WRONG_ARGS;
+	Tcl_WrongNumArgs(interp, 1, objv, "?-nonewline? channelId");
+	iPtr->flags &= ~INTERP_ALTERNATE_WRONG_ARGS;
 	return TCL_ERROR;
     }
 
     i = 1;
     newline = 0;
-    if (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0) {
+    if (strcmp(TclGetString(objv[1]), "-nonewline") == 0) {
 	newline = 1;
 	i++;
     }
 
     if (i == objc) {
-        goto argerror;
+	goto argerror;
     }
 
-    name = Tcl_GetString(objv[i]);
-    chan = Tcl_GetChannel(interp, name, &mode);
-    if (chan == (Tcl_Channel) NULL) {
+    chanObjPtr = objv[i];
+    if (TclGetChannelFromObj(interp, chanObjPtr, &chan, &mode, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
     if ((mode & TCL_READABLE) == 0) {
-	Tcl_AppendResult(interp, "channel \"", name, 
-                "\" wasn't opened for reading", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel \"", TclGetString(chanObjPtr),
+		"\" wasn't opened for reading", NULL);
+	return TCL_ERROR;
     }
     i++;	/* Consumed channel name. */
 
     /*
-     * Compute how many bytes to read, and see whether the final
-     * newline should be dropped.
+     * Compute how many bytes to read.
      */
 
     toRead = -1;
     if (i < objc) {
-	char *arg;
-	
-	arg = Tcl_GetString(objv[i]);
-	if (isdigit(UCHAR(arg[0]))) { /* INTL: digit */
-	    if (Tcl_GetIntFromObj(interp, objv[i], &toRead) != TCL_OK) {
-                return TCL_ERROR;
+	if (TclGetIntFromObj(interp, objv[i], &toRead) != TCL_OK) {
+	    /*
+	     * The code below provides backwards compatibility with an old
+	     * form of the command that is no longer recommended or
+	     * documented. See also [Bug #3151675]. Will be removed in Tcl 9,
+	     * maybe even earlier.
+	     */
+
+	    if (strcmp(TclGetString(objv[i]), "nonewline") != 0) {
+	    return TCL_ERROR;
 	    }
-	} else if (strcmp(arg, "nonewline") == 0) {
 	    newline = 1;
-	} else {
-	    Tcl_AppendResult(interp, "bad argument \"", arg,
-		    "\": should be \"nonewline\"", (char *) NULL);
+	} else if (toRead < 0) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "expected non-negative integer but got \"",
+		    TclGetString(objv[i]), "\"", NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "NUMBER", NULL);
 	    return TCL_ERROR;
-        }
+	}
     }
 
     resultPtr = Tcl_NewObj();
     Tcl_IncrRefCount(resultPtr);
     charactersRead = Tcl_ReadChars(chan, resultPtr, toRead, 0);
     if (charactersRead < 0) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendResult(interp, "error reading \"", name, "\": ",
-		Tcl_PosixError(interp), (char *) NULL);
+	/*
+	 * TIP #219.
+	 * Capture error messages put by the driver into the bypass area and
+	 * put them into the regular interpreter result. Fall back to the
+	 * regular message if nothing was found in the bypass.
+	 */
+
+	if (!TclChanCaughtErrorBypass(interp, chan)) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "error reading \"",
+		    TclGetString(chanObjPtr), "\": ",
+		    Tcl_PosixError(interp), NULL);
+	}
 	Tcl_DecrRefCount(resultPtr);
 	return TCL_ERROR;
     }
-    
+
     /*
      * If requested, remove the last newline in the channel if at EOF.
      */
-    
+
     if ((charactersRead > 0) && (newline != 0)) {
 	char *result;
 	int length;
 
-	result = Tcl_GetStringFromObj(resultPtr, &length);
+	result = TclGetStringFromObj(resultPtr, &length);
 	if (result[length - 1] == '\n') {
 	    Tcl_SetObjLength(resultPtr, length - 1);
 	}
@@ -391,35 +489,34 @@ Tcl_ReadObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_SeekObjCmd --
  *
- *	This procedure is invoked to process the Tcl "seek" command. See
- *	the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "seek" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Moves the position of the access point on the specified channel.
- *	May flush queued output.
+ *	Moves the position of the access point on the specified channel.  May
+ *	flush queued output.
  *
  *----------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 int
-Tcl_SeekObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_SeekObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Channel chan;			/* The channel to tell on. */
-    Tcl_WideInt offset;			/* Where to seek? */
-    int mode;				/* How to seek? */
-    Tcl_WideInt result;			/* Of calling Tcl_Seek. */
-    char *chanName;
+    Tcl_Channel chan;		/* The channel to tell on. */
+    Tcl_WideInt offset;		/* Where to seek? */
+    int mode;			/* How to seek? */
+    Tcl_WideInt result;		/* Of calling Tcl_Seek. */
     int optionIndex;
-    static CONST char *originOptions[] = {
-	"start", "current", "end", (char *) NULL
+    static const char *originOptions[] = {
+	"start", "current", "end", NULL
     };
     static CONST int modeArray[] = {SEEK_SET, SEEK_CUR, SEEK_END};
 
@@ -427,9 +524,7 @@ Tcl_SeekObjCmd(clientData, interp, objc, objv)
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId offset ?origin?");
 	return TCL_ERROR;
     }
-    chanName = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, chanName, NULL);
-    if (chan == (Tcl_Channel) NULL) {
+    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
     if (Tcl_GetWideIntFromObj(interp, objv[2], &offset) != TCL_OK) {
@@ -446,9 +541,18 @@ Tcl_SeekObjCmd(clientData, interp, objc, objv)
 
     result = Tcl_Seek(chan, offset, mode);
     if (result == Tcl_LongAsWide(-1)) {
-        Tcl_AppendResult(interp, "error during seek on \"", 
-		chanName, "\": ", Tcl_PosixError(interp), (char *) NULL);
-        return TCL_ERROR;
+	/*
+	 * TIP #219.
+	 * Capture error messages put by the driver into the bypass area and
+	 * put them into the regular interpreter result. Fall back to the
+	 * regular message if nothing was found in the bypass.
+	 */
+	if (!TclChanCaughtErrorBypass(interp, chan)) {
+	    Tcl_AppendResult(interp, "error during seek on \"",
+		    TclGetString(objv[1]), "\": ",
+		    Tcl_PosixError(interp), NULL);
+	}
+	return TCL_ERROR;
     }
     return TCL_OK;
 }
@@ -458,8 +562,8 @@ Tcl_SeekObjCmd(clientData, interp, objc, objv)
  *
  * Tcl_TellObjCmd --
  *
- *	This procedure is invoked to process the Tcl "tell" command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "tell" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -472,30 +576,42 @@ Tcl_SeekObjCmd(clientData, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_TellObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_TellObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Channel chan;			/* The channel to tell on. */
-    char *chanName;
+    Tcl_Channel chan;		/* The channel to tell on. */
+    Tcl_WideInt newLoc;
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
 	return TCL_ERROR;
     }
+
+    /*
+     * Try to find a channel with the right name and permissions in the IO
+     * channel table of this interpreter.
+     */
+
+    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    newLoc = Tcl_Tell(chan);
+
     /*
-     * Try to find a channel with the right name and permissions in
-     * the IO channel table of this interpreter.
+     * TIP #219.
+     * Capture error messages put by the driver into the bypass area and put
+     * them into the regular interpreter result.
      */
-    
-    chanName = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, chanName, NULL);
-    if (chan == (Tcl_Channel) NULL) {
+
+    if (TclChanCaughtErrorBypass(interp, chan)) {
 	return TCL_ERROR;
     }
-    Tcl_SetWideIntObj(Tcl_GetObjResult(interp), Tcl_Tell(chan));
+
+    Tcl_SetObjResult(interp, Tcl_NewWideIntObj(newLoc));
     return TCL_OK;
 }
 
@@ -504,8 +620,8 @@ Tcl_TellObjCmd(clientData, interp, objc, objv)
  *
  * Tcl_CloseObjCmd --
  *
- *	This procedure is invoked to process the Tcl "close" command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "close" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -518,48 +634,48 @@ Tcl_TellObjCmd(clientData, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_CloseObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_CloseObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Channel chan;			/* The channel to close. */
-    char *arg;
+    Tcl_Channel chan;		/* The channel to close. */
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
 	return TCL_ERROR;
     }
 
-    arg = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, arg, NULL);
-    if (chan == (Tcl_Channel) NULL) {
+    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
 
     if (Tcl_UnregisterChannel(interp, chan) != TCL_OK) {
-        /*
-         * If there is an error message and it ends with a newline, remove
-         * the newline. This is done for command pipeline channels where the
-         * error output from the subprocesses is stored in interp's result.
-         *
-         * NOTE: This is likely to not have any effect on regular error
-         * messages produced by drivers during the closing of a channel,
-         * because the Tcl convention is that such error messages do not
-         * have a terminating newline.
-         */
-
-	Tcl_Obj *resultPtr;
+	/*
+	 * If there is an error message and it ends with a newline, remove the
+	 * newline. This is done for command pipeline channels where the error
+	 * output from the subprocesses is stored in interp's result.
+	 *
+	 * NOTE: This is likely to not have any effect on regular error
+	 * messages produced by drivers during the closing of a channel,
+	 * because the Tcl convention is that such error messages do not have
+	 * a terminating newline.
+	 */
+
+	Tcl_Obj *resultPtr = Tcl_GetObjResult(interp);
 	char *string;
 	int len;
-	
-	resultPtr = Tcl_GetObjResult(interp);
-	string = Tcl_GetStringFromObj(resultPtr, &len);
-        if ((len > 0) && (string[len - 1] == '\n')) {
+
+	if (Tcl_IsShared(resultPtr)) {
+	    resultPtr = Tcl_DuplicateObj(resultPtr);
+	    Tcl_SetObjResult(interp, resultPtr);
+	}
+	string = TclGetStringFromObj(resultPtr, &len);
+	if ((len > 0) && (string[len - 1] == '\n')) {
 	    Tcl_SetObjLength(resultPtr, len - 1);
-        }
-        return TCL_ERROR;
+	}
+	return TCL_ERROR;
     }
 
     return TCL_OK;
@@ -570,8 +686,8 @@ Tcl_CloseObjCmd(clientData, interp, objc, objv)
  *
  * Tcl_FconfigureObjCmd --
  *
- *	This procedure is invoked to process the Tcl "fconfigure" command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "fconfigure" command. See
+ *	the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -584,55 +700,60 @@ Tcl_CloseObjCmd(clientData, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_FconfigureObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_FconfigureObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    char *chanName, *optionName, *valueName;
-    Tcl_Channel chan;			/* The channel to set a mode on. */
-    int i;				/* Iterate over arg-value pairs. */
-    Tcl_DString ds;			/* DString to hold result of
-                                         * calling Tcl_GetChannelOption. */
+    char *optionName, *valueName;
+    Tcl_Channel chan;		/* The channel to set a mode on. */
+    int i;			/* Iterate over arg-value pairs. */
 
     if ((objc < 2) || (((objc % 2) == 1) && (objc != 3))) {
 	Tcl_WrongNumArgs(interp, 1, objv,
 		"channelId ?optionName? ?value? ?optionName value?...");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    chanName = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, chanName, NULL);
-    if (chan == (Tcl_Channel) NULL) {
-        return TCL_ERROR;
+
+    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
+	return TCL_ERROR;
     }
+
     if (objc == 2) {
-        Tcl_DStringInit(&ds);
-        if (Tcl_GetChannelOption(interp, chan, (char *) NULL, &ds) != TCL_OK) {
+	Tcl_DString ds;		/* DString to hold result of calling
+				 * Tcl_GetChannelOption. */
+
+	Tcl_DStringInit(&ds);
+	if (Tcl_GetChannelOption(interp, chan, NULL, &ds) != TCL_OK) {
 	    Tcl_DStringFree(&ds);
 	    return TCL_ERROR;
-        }
-        Tcl_DStringResult(interp, &ds);
-        return TCL_OK;
-    }
-    if (objc == 3) {
-        Tcl_DStringInit(&ds);
-	optionName = Tcl_GetString(objv[2]);
-        if (Tcl_GetChannelOption(interp, chan, optionName, &ds) != TCL_OK) {
-            Tcl_DStringFree(&ds);
-            return TCL_ERROR;
-        }
-        Tcl_DStringResult(interp, &ds);
-        return TCL_OK;
+	}
+	Tcl_DStringResult(interp, &ds);
+	return TCL_OK;
+    } else if (objc == 3) {
+	Tcl_DString ds;		/* DString to hold result of calling
+				 * Tcl_GetChannelOption. */
+
+	Tcl_DStringInit(&ds);
+	optionName = TclGetString(objv[2]);
+	if (Tcl_GetChannelOption(interp, chan, optionName, &ds) != TCL_OK) {
+	    Tcl_DStringFree(&ds);
+	    return TCL_ERROR;
+	}
+	Tcl_DStringResult(interp, &ds);
+	return TCL_OK;
     }
+
     for (i = 3; i < objc; i += 2) {
-	optionName = Tcl_GetString(objv[i-1]);
-	valueName = Tcl_GetString(objv[i]);
-        if (Tcl_SetChannelOption(interp, chan, optionName, valueName)
+	optionName = TclGetString(objv[i-1]);
+	valueName = TclGetString(objv[i]);
+	if (Tcl_SetChannelOption(interp, chan, optionName, valueName)
 		!= TCL_OK) {
-            return TCL_ERROR;
-        }
+	    return TCL_ERROR;
+	}
     }
+
     return TCL_OK;
 }
 
@@ -641,43 +762,39 @@ Tcl_FconfigureObjCmd(clientData, interp, objc, objv)
  *
  * Tcl_EofObjCmd --
  *
- *	This procedure is invoked to process the Tcl "eof" command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "eof" command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Sets interp's result to boolean true or false depending on whether
- *	the specified channel has an EOF condition.
+ *	Sets interp's result to boolean true or false depending on whether the
+ *	specified channel has an EOF condition.
  *
  *---------------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 int
-Tcl_EofObjCmd(unused, interp, objc, objv)
-    ClientData unused;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_EofObjCmd(
+    ClientData unused,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Channel chan;
-    int dummy;
-    char *arg;
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
-    arg = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, arg, &dummy);
-    if (chan == NULL) {
+    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
 
-    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), Tcl_Eof(chan));
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_Eof(chan)));
     return TCL_OK;
 }
 
@@ -686,8 +803,8 @@ Tcl_EofObjCmd(unused, interp, objc, objv)
  *
  * Tcl_ExecObjCmd --
  *
- *	This procedure is invoked to process the "exec" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "exec" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -700,39 +817,39 @@ Tcl_EofObjCmd(unused, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ExecObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_ExecObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     /*
-     * This procedure generates an argv array for the string arguments. It
+     * This function generates an argv array for the string arguments. It
      * starts out with stack-allocated space but uses dynamically-allocated
      * storage if needed.
      */
 
-#define NUM_ARGS 20
     Tcl_Obj *resultPtr;
-    CONST char **argv;
+    const char **argv;
     char *string;
     Tcl_Channel chan;
-    CONST char *argStorage[NUM_ARGS];
     int argc, background, i, index, keepNewline, result, skip, length;
-    static CONST char *options[] = {
-	"-keepnewline",	"--",		NULL
+    int ignoreStderr;
+    static const char *options[] = {
+	"-ignorestderr", "-keepnewline", "--", NULL
     };
     enum options {
-	EXEC_KEEPNEWLINE, EXEC_LAST
+	EXEC_IGNORESTDERR, EXEC_KEEPNEWLINE, EXEC_LAST
     };
 
     /*
-     * Check for a leading "-keepnewline" argument.
+     * Check for any leading option arguments.
      */
 
     keepNewline = 0;
+    ignoreStderr = 0;
     for (skip = 1; skip < objc; skip++) {
-	string = Tcl_GetString(objv[skip]);
+	string = TclGetString(objv[skip]);
 	if (string[0] != '-') {
 	    break;
 	}
@@ -742,6 +859,8 @@ Tcl_ExecObjCmd(dummy, interp, objc, objv)
 	}
 	if (index == EXEC_KEEPNEWLINE) {
 	    keepNewline = 1;
+	} else if (index == EXEC_IGNORESTDERR) {
+	    ignoreStderr = 1;
 	} else {
 	    skip++;
 	    break;
@@ -757,23 +876,20 @@ Tcl_ExecObjCmd(dummy, interp, objc, objv)
      */
 
     background = 0;
-    string = Tcl_GetString(objv[objc - 1]);
+    string = TclGetString(objv[objc - 1]);
     if ((string[0] == '&') && (string[1] == '\0')) {
 	objc--;
-        background = 1;
+	background = 1;
     }
 
     /*
-     * Create the string argument array "argv". Make sure argv is large
-     * enough to hold the argc arguments plus 1 extra for the zero
-     * end-of-argv word.
+     * Create the string argument array "argv". Make sure argv is large enough
+     * to hold the argc arguments plus 1 extra for the zero end-of-argv word.
      */
 
-    argv = argStorage;
     argc = objc - skip;
-    if ((argc + 1) > (int)(sizeof(argv) / sizeof(argv[0]))) {
-	argv = (CONST char **) ckalloc((unsigned)(argc + 1) * sizeof(char *));
-    }
+    argv = (const char **)
+	    TclStackAlloc(interp, (unsigned)(argc + 1) * sizeof(char *));
 
     /*
      * Copy the string conversions of each (post option) object into the
@@ -781,64 +897,71 @@ Tcl_ExecObjCmd(dummy, interp, objc, objv)
      */
 
     for (i = 0; i < argc; i++) {
-	argv[i] = Tcl_GetString(objv[i + skip]);
+	argv[i] = TclGetString(objv[i + skip]);
     }
     argv[argc] = NULL;
-    chan = Tcl_OpenCommandChannel(interp, argc, argv,
-            (background ? 0 : TCL_STDOUT | TCL_STDERR));
+    chan = Tcl_OpenCommandChannel(interp, argc, argv, (background ? 0 :
+	    (ignoreStderr ? TCL_STDOUT : TCL_STDOUT|TCL_STDERR)));
 
     /*
-     * Free the argv array if malloc'ed storage was used.
+     * Free the argv array.
      */
 
-    if (argv != argStorage) {
-	ckfree((char *)argv);
-    }
+    TclStackFree(interp, (void *)argv);
 
-    if (chan == (Tcl_Channel) NULL) {
+    if (chan == NULL) {
 	return TCL_ERROR;
     }
 
     if (background) {
-        /*
+	/*
 	 * Store the list of PIDs from the pipeline in interp's result and
 	 * detach the PIDs (instead of waiting for them).
 	 */
 
-        TclGetAndDetachPids(interp, chan);
-        if (Tcl_Close(interp, chan) != TCL_OK) {
+	TclGetAndDetachPids(interp, chan);
+	if (Tcl_Close(interp, chan) != TCL_OK) {
 	    return TCL_ERROR;
-        }
+	}
 	return TCL_OK;
     }
 
     resultPtr = Tcl_NewObj();
     if (Tcl_GetChannelHandle(chan, TCL_READABLE, NULL) == TCL_OK) {
 	if (Tcl_ReadChars(chan, resultPtr, -1, 0) < 0) {
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendResult(interp, "error reading output from command: ",
-		    Tcl_PosixError(interp), (char *) NULL);
-	    Tcl_DecrRefCount(resultPtr);
+	    /*
+	     * TIP #219.
+	     * Capture error messages put by the driver into the bypass area
+	     * and put them into the regular interpreter result. Fall back to
+	     * the regular message if nothing was found in the bypass.
+	     */
+
+	    if (!TclChanCaughtErrorBypass(interp, chan)) {
+		Tcl_ResetResult(interp);
+		Tcl_AppendResult(interp, "error reading output from command: ",
+			Tcl_PosixError(interp), NULL);
+		Tcl_DecrRefCount(resultPtr);
+	    }
 	    return TCL_ERROR;
 	}
     }
+
     /*
-     * If the process produced anything on stderr, it will have been
-     * returned in the interpreter result.  It needs to be appended to
-     * the result string.
+     * If the process produced anything on stderr, it will have been returned
+     * in the interpreter result. It needs to be appended to the result
+     * string.
      */
 
     result = Tcl_Close(interp, chan);
-    string = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &length);
-    Tcl_AppendToObj(resultPtr, string, length);
+    Tcl_AppendObjToObj(resultPtr, Tcl_GetObjResult(interp));
 
     /*
-     * If the last character of the result is a newline, then remove
-     * the newline character.
+     * If the last character of the result is a newline, then remove the
+     * newline character.
      */
-    
+
     if (keepNewline == 0) {
-	string = Tcl_GetStringFromObj(resultPtr, &length);
+	string = TclGetStringFromObj(resultPtr, &length);
 	if ((length > 0) && (string[length - 1] == '\n')) {
 	    Tcl_SetObjLength(resultPtr, length - 1);
 	}
@@ -853,48 +976,45 @@ Tcl_ExecObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_FblockedObjCmd --
  *
- *	This procedure is invoked to process the Tcl "fblocked" command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the Tcl "fblocked" command. See
+ *	the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Sets interp's result to boolean true or false depending on whether
- *	the preceeding input operation on the channel would have blocked.
+ *	Sets interp's result to boolean true or false depending on whether the
+ *	preceeding input operation on the channel would have blocked.
  *
  *---------------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 int
-Tcl_FblockedObjCmd(unused, interp, objc, objv)
-    ClientData unused;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_FblockedObjCmd(
+    ClientData unused,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Channel chan;
     int mode;
-    char *arg;
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
-    arg = Tcl_GetString(objv[1]);
-    chan = Tcl_GetChannel(interp, arg, &mode);
-    if (chan == NULL) {
-        return TCL_ERROR;
+    if (TclGetChannelFromObj(interp, objv[1], &chan, &mode, 0) != TCL_OK) {
+	return TCL_ERROR;
     }
     if ((mode & TCL_READABLE) == 0) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
-		arg, "\" wasn't opened for reading", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel \"", TclGetString(objv[1]),
+		"\" wasn't opened for reading", NULL);
+	return TCL_ERROR;
     }
-        
-    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), Tcl_InputBlocked(chan));
+
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_InputBlocked(chan)));
     return TCL_OK;
 }
 
@@ -903,8 +1023,8 @@ Tcl_FblockedObjCmd(unused, interp, objc, objv)
  *
  * Tcl_OpenObjCmd --
  *
- *	This procedure is invoked to process the "open" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "open" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -917,14 +1037,14 @@ Tcl_FblockedObjCmd(unused, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_OpenObjCmd(notUsed, interp, objc, objv)
-    ClientData notUsed;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_OpenObjCmd(
+    ClientData notUsed,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int pipeline, prot;
-    char *modeString, *what;
+    const char *modeString, *what;
     Tcl_Channel chan;
 
     if ((objc < 2) || (objc > 4)) {
@@ -935,16 +1055,34 @@ Tcl_OpenObjCmd(notUsed, interp, objc, objv)
     if (objc == 2) {
 	modeString = "r";
     } else {
-	modeString = Tcl_GetString(objv[2]);
+	modeString = TclGetString(objv[2]);
 	if (objc == 4) {
-	    if (Tcl_GetIntFromObj(interp, objv[3], &prot) != TCL_OK) {
+	    char *permString = TclGetString(objv[3]);
+	    int code = TCL_ERROR;
+	    int scanned = TclParseAllWhiteSpace(permString, -1);
+
+	    /* Support legacy octal numbers */
+	    if ((permString[scanned] == '0')
+		    && (permString[scanned+1] >= '0')
+		    && (permString[scanned+1] <= '7')) {
+
+		Tcl_Obj *permObj;
+
+		TclNewLiteralStringObj(permObj, "0o");
+		Tcl_AppendToObj(permObj, permString+scanned+1, -1);
+		code = TclGetIntFromObj(NULL, permObj, &prot);
+		Tcl_DecrRefCount(permObj);
+	    }
+
+	    if ((code == TCL_ERROR)
+		    && TclGetIntFromObj(interp, objv[3], &prot) != TCL_OK) {
 		return TCL_ERROR;
 	    }
 	}
     }
 
     pipeline = 0;
-    what = Tcl_GetString(objv[1]);
+    what = TclGetString(objv[1]);
     if (what[0] == '|') {
 	pipeline = 1;
     }
@@ -954,43 +1092,47 @@ Tcl_OpenObjCmd(notUsed, interp, objc, objv)
      */
 
     if (!pipeline) {
-        chan = Tcl_FSOpenFileChannel(interp, objv[1], modeString, prot);
+	chan = Tcl_FSOpenFileChannel(interp, objv[1], modeString, prot);
     } else {
-	int mode, seekFlag, cmdObjc;
-	CONST char **cmdArgv;
+	int mode, seekFlag, cmdObjc, binary;
+	const char **cmdArgv;
 
-        if (Tcl_SplitList(interp, what+1, &cmdObjc, &cmdArgv) != TCL_OK) {
-            return TCL_ERROR;
-        }
+	if (Tcl_SplitList(interp, what+1, &cmdObjc, &cmdArgv) != TCL_OK) {
+	    return TCL_ERROR;
+	}
 
-        mode = TclGetOpenMode(interp, modeString, &seekFlag);
-        if (mode == -1) {
+	mode = TclGetOpenModeEx(interp, modeString, &seekFlag, &binary);
+	if (mode == -1) {
 	    chan = NULL;
-        } else {
+	} else {
 	    int flags = TCL_STDERR | TCL_ENFORCE_MODE;
+
 	    switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
-		case O_RDONLY:
-		    flags |= TCL_STDOUT;
-		    break;
-		case O_WRONLY:
-		    flags |= TCL_STDIN;
-		    break;
-		case O_RDWR:
-		    flags |= (TCL_STDIN | TCL_STDOUT);
-		    break;
-		default:
-		    panic("Tcl_OpenCmd: invalid mode value");
-		    break;
+	    case O_RDONLY:
+		flags |= TCL_STDOUT;
+		break;
+	    case O_WRONLY:
+		flags |= TCL_STDIN;
+		break;
+	    case O_RDWR:
+		flags |= (TCL_STDIN | TCL_STDOUT);
+		break;
+	    default:
+		Tcl_Panic("Tcl_OpenCmd: invalid mode value");
+		break;
 	    }
 	    chan = Tcl_OpenCommandChannel(interp, cmdObjc, cmdArgv, flags);
+	    if (binary && chan) {
+		Tcl_SetChannelOption(interp, chan, "-translation", "binary");
+	    }
 	}
-        ckfree((char *) cmdArgv);
+	ckfree((char *) cmdArgv);
     }
-    if (chan == (Tcl_Channel) NULL) {
-        return TCL_ERROR;
+    if (chan == NULL) {
+	return TCL_ERROR;
     }
     Tcl_RegisterChannel(interp, chan);
-    Tcl_AppendResult(interp, Tcl_GetChannelName(chan), (char *) NULL);
+    Tcl_AppendResult(interp, Tcl_GetChannelName(chan), NULL);
     return TCL_OK;
 }
 
@@ -999,40 +1141,38 @@ Tcl_OpenObjCmd(notUsed, interp, objc, objv)
  *
  * TcpAcceptCallbacksDeleteProc --
  *
- *	Assocdata cleanup routine called when an interpreter is being
- *	deleted to set the interp field of all the accept callback records
- *	registered with	the interpreter to NULL. This will prevent the
- *	interpreter from being used in the future to eval accept scripts.
+ *	Assocdata cleanup routine called when an interpreter is being deleted
+ *	to set the interp field of all the accept callback records registered
+ *	with the interpreter to NULL. This will prevent the interpreter from
+ *	being used in the future to eval accept scripts.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	Deallocates memory and sets the interp field of all the accept
- *	callback records to NULL to prevent this interpreter from being
- *	used subsequently to eval accept scripts.
+ *	callback records to NULL to prevent this interpreter from being used
+ *	subsequently to eval accept scripts.
  *
  *----------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 static void
-TcpAcceptCallbacksDeleteProc(clientData, interp)
-    ClientData clientData;	/* Data which was passed when the assocdata
-                                 * was registered. */
-    Tcl_Interp *interp;		/* Interpreter being deleted - not used. */
+TcpAcceptCallbacksDeleteProc(
+    ClientData clientData,	/* Data which was passed when the assocdata
+				 * was registered. */
+    Tcl_Interp *interp)		/* Interpreter being deleted - not used. */
 {
-    Tcl_HashTable *hTblPtr;
+    Tcl_HashTable *hTblPtr = clientData;
     Tcl_HashEntry *hPtr;
     Tcl_HashSearch hSearch;
-    AcceptCallback *acceptCallbackPtr;
 
-    hTblPtr = (Tcl_HashTable *) clientData;
     for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-             hPtr != (Tcl_HashEntry *) NULL;
-             hPtr = Tcl_NextHashEntry(&hSearch)) {
-        acceptCallbackPtr = (AcceptCallback *) Tcl_GetHashValue(hPtr);
-        acceptCallbackPtr->interp = (Tcl_Interp *) NULL;
+	    hPtr != NULL; hPtr = Tcl_NextHashEntry(&hSearch)) {
+	AcceptCallback *acceptCallbackPtr = Tcl_GetHashValue(hPtr);
+
+	acceptCallbackPtr->interp = NULL;
     }
     Tcl_DeleteHashTable(hTblPtr);
     ckfree((char *) hTblPtr);
@@ -1043,50 +1183,50 @@ TcpAcceptCallbacksDeleteProc(clientData, interp)
  *
  * RegisterTcpServerInterpCleanup --
  *
- *	Registers an accept callback record to have its interp
- *	field set to NULL when the interpreter is deleted.
+ *	Registers an accept callback record to have its interp field set to
+ *	NULL when the interpreter is deleted.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	When, in the future, the interpreter is deleted, the interp
- *	field of the accept callback data structure will be set to
- *	NULL. This will prevent attempts to eval the accept script
- *	in a deleted interpreter.
+ *	When, in the future, the interpreter is deleted, the interp field of
+ *	the accept callback data structure will be set to NULL. This will
+ *	prevent attempts to eval the accept script in a deleted interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr)
-    Tcl_Interp *interp;		/* Interpreter for which we want to be
-                                 * informed of deletion. */
-    AcceptCallback *acceptCallbackPtr;
-    				/* The accept callback record whose
-                                 * interp field we want set to NULL when
-                                 * the interpreter is deleted. */
+RegisterTcpServerInterpCleanup(
+    Tcl_Interp *interp,		/* Interpreter for which we want to be
+				 * informed of deletion. */
+    AcceptCallback *acceptCallbackPtr)
+				/* The accept callback record whose interp
+				 * field we want set to NULL when the
+				 * interpreter is deleted. */
 {
-    Tcl_HashTable *hTblPtr;	/* Hash table for accept callback
-                                 * records to smash when the interpreter
-                                 * will be deleted. */
+    Tcl_HashTable *hTblPtr;	/* Hash table for accept callback records to
+				 * smash when the interpreter will be
+				 * deleted. */
     Tcl_HashEntry *hPtr;	/* Entry for this record. */
-    int new;			/* Is the entry new? */
+    int isNew;			/* Is the entry new? */
 
-    hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp,
-            "tclTCPAcceptCallbacks",
-            NULL);
-    if (hTblPtr == (Tcl_HashTable *) NULL) {
-        hTblPtr = (Tcl_HashTable *) ckalloc((unsigned) sizeof(Tcl_HashTable));
-        Tcl_InitHashTable(hTblPtr, TCL_ONE_WORD_KEYS);
-        (void) Tcl_SetAssocData(interp, "tclTCPAcceptCallbacks",
-                TcpAcceptCallbacksDeleteProc, (ClientData) hTblPtr);
-    }
-    hPtr = Tcl_CreateHashEntry(hTblPtr, (char *) acceptCallbackPtr, &new);
-    if (!new) {
-        panic("RegisterTcpServerCleanup: damaged accept record table");
-    }
-    Tcl_SetHashValue(hPtr, (ClientData) acceptCallbackPtr);
+    hTblPtr = (Tcl_HashTable *)
+	    Tcl_GetAssocData(interp, "tclTCPAcceptCallbacks", NULL);
+
+    if (hTblPtr == NULL) {
+	hTblPtr = (Tcl_HashTable *) ckalloc((unsigned) sizeof(Tcl_HashTable));
+	Tcl_InitHashTable(hTblPtr, TCL_ONE_WORD_KEYS);
+	(void) Tcl_SetAssocData(interp, "tclTCPAcceptCallbacks",
+		TcpAcceptCallbacksDeleteProc, hTblPtr);
+    }
+
+    hPtr = Tcl_CreateHashEntry(hTblPtr, (char *) acceptCallbackPtr, &isNew);
+    if (!isNew) {
+	Tcl_Panic("RegisterTcpServerCleanup: damaged accept record table");
+    }
+    Tcl_SetHashValue(hPtr, acceptCallbackPtr);
 }
 
 /*
@@ -1094,41 +1234,41 @@ RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr)
  *
  * UnregisterTcpServerInterpCleanupProc --
  *
- *	Unregister a previously registered accept callback record. The
- *	interp field of this record will no longer be set to NULL in
- *	the future when the interpreter is deleted.
+ *	Unregister a previously registered accept callback record. The interp
+ *	field of this record will no longer be set to NULL in the future when
+ *	the interpreter is deleted.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Prevents the interp field of the accept callback record from
- *	being set to NULL in the future when the interpreter is deleted.
+ *	Prevents the interp field of the accept callback record from being set
+ *	to NULL in the future when the interpreter is deleted.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UnregisterTcpServerInterpCleanupProc(interp, acceptCallbackPtr)
-    Tcl_Interp *interp;		/* Interpreter in which the accept callback
-                                 * record was registered. */
-    AcceptCallback *acceptCallbackPtr;
-    				/* The record for which to delete the
-                                 * registration. */
+UnregisterTcpServerInterpCleanupProc(
+    Tcl_Interp *interp,		/* Interpreter in which the accept callback
+				 * record was registered. */
+    AcceptCallback *acceptCallbackPtr)
+				/* The record for which to delete the
+				 * registration. */
 {
     Tcl_HashTable *hTblPtr;
     Tcl_HashEntry *hPtr;
 
     hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp,
-            "tclTCPAcceptCallbacks", NULL);
-    if (hTblPtr == (Tcl_HashTable *) NULL) {
-        return;
+	    "tclTCPAcceptCallbacks", NULL);
+    if (hTblPtr == NULL) {
+	return;
     }
+
     hPtr = Tcl_FindHashEntry(hTblPtr, (char *) acceptCallbackPtr);
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        return;
+    if (hPtr != NULL) {
+	Tcl_DeleteHashEntry(hPtr);
     }
-    Tcl_DeleteHashEntry(hPtr);
 }
 
 /*
@@ -1136,8 +1276,8 @@ UnregisterTcpServerInterpCleanupProc(interp, acceptCallbackPtr)
  *
  * AcceptCallbackProc --
  *
- *	This callback is invoked by the TCP channel driver when it
- *	accepts a new connection from a client on a server socket.
+ *	This callback is invoked by the TCP channel driver when it accepts a
+ *	new connection from a client on a server socket.
  *
  * Results:
  *	None.
@@ -1149,72 +1289,65 @@ UnregisterTcpServerInterpCleanupProc(interp, acceptCallbackPtr)
  */
 
 static void
-AcceptCallbackProc(callbackData, chan, address, port)
-    ClientData callbackData;		/* The data stored when the callback
-                                         * was created in the call to
-                                         * Tcl_OpenTcpServer. */
-    Tcl_Channel chan;			/* Channel for the newly accepted
-                                         * connection. */
-    char *address;			/* Address of client that was
-                                         * accepted. */
-    int port;				/* Port of client that was accepted. */
+AcceptCallbackProc(
+    ClientData callbackData,	/* The data stored when the callback was
+				 * created in the call to
+				 * Tcl_OpenTcpServer. */
+    Tcl_Channel chan,		/* Channel for the newly accepted
+				 * connection. */
+    char *address,		/* Address of client that was accepted. */
+    int port)			/* Port of client that was accepted. */
 {
-    AcceptCallback *acceptCallbackPtr;
-    Tcl_Interp *interp;
-    char *script;
-    char portBuf[TCL_INTEGER_SPACE];
-    int result;
-
-    acceptCallbackPtr = (AcceptCallback *) callbackData;
+    AcceptCallback *acceptCallbackPtr = (AcceptCallback *) callbackData;
 
     /*
      * Check if the callback is still valid; the interpreter may have gone
      * away, this is signalled by setting the interp field of the callback
      * data to NULL.
      */
-    
-    if (acceptCallbackPtr->interp != (Tcl_Interp *) NULL) {
 
-        script = acceptCallbackPtr->script;
-        interp = acceptCallbackPtr->interp;
-        
-        Tcl_Preserve((ClientData) script);
-        Tcl_Preserve((ClientData) interp);
+    if (acceptCallbackPtr->interp != NULL) {
+	char portBuf[TCL_INTEGER_SPACE];
+	char *script = acceptCallbackPtr->script;
+	Tcl_Interp *interp = acceptCallbackPtr->interp;
+	int result;
+
+	Tcl_Preserve(script);
+	Tcl_Preserve(interp);
 
 	TclFormatInt(portBuf, port);
-        Tcl_RegisterChannel(interp, chan);
-
-        /*
-         * Artificially bump the refcount to protect the channel from
-         * being deleted while the script is being evaluated.
-         */
-
-        Tcl_RegisterChannel((Tcl_Interp *) NULL,  chan);
-        
-        result = Tcl_VarEval(interp, script, " ", Tcl_GetChannelName(chan),
-                " ", address, " ", portBuf, (char *) NULL);
-        if (result != TCL_OK) {
-            Tcl_BackgroundError(interp);
+	Tcl_RegisterChannel(interp, chan);
+
+	/*
+	 * Artificially bump the refcount to protect the channel from being
+	 * deleted while the script is being evaluated.
+	 */
+
+	Tcl_RegisterChannel(NULL, chan);
+
+	result = Tcl_VarEval(interp, script, " ", Tcl_GetChannelName(chan),
+		" ", address, " ", portBuf, NULL);
+	if (result != TCL_OK) {
+	    TclBackgroundException(interp, result);
 	    Tcl_UnregisterChannel(interp, chan);
-        }
+	}
 
-        /*
-         * Decrement the artificially bumped refcount. After this it is
-         * not safe anymore to use "chan", because it may now be deleted.
-         */
+	/*
+	 * Decrement the artificially bumped refcount. After this it is not
+	 * safe anymore to use "chan", because it may now be deleted.
+	 */
 
-        Tcl_UnregisterChannel((Tcl_Interp *) NULL, chan);
-        
-        Tcl_Release((ClientData) interp);
-        Tcl_Release((ClientData) script);
-    } else {
+	Tcl_UnregisterChannel(NULL, chan);
 
-        /*
-         * The interpreter has been deleted, so there is no useful
-         * way to utilize the client socket - just close it.
-         */
+	Tcl_Release(interp);
+	Tcl_Release(script);
+    } else {
+	/*
+	 * The interpreter has been deleted, so there is no useful way to
+	 * utilize the client socket - just close it.
+	 */
 
-        Tcl_Close((Tcl_Interp *) NULL, chan);
+	Tcl_Close(NULL, chan);
     }
 }
 
@@ -1223,36 +1356,35 @@ AcceptCallbackProc(callbackData, chan, address, port)
  *
  * TcpServerCloseProc --
  *
- *	This callback is called when the TCP server channel for which it
- *	was registered is being closed. It informs the interpreter in
- *	which the accept script is evaluated (if that interpreter still
- *	exists) that this channel no longer needs to be informed if the
- *	interpreter is deleted.
+ *	This callback is called when the TCP server channel for which it was
+ *	registered is being closed. It informs the interpreter in which the
+ *	accept script is evaluated (if that interpreter still exists) that
+ *	this channel no longer needs to be informed if the interpreter is
+ *	deleted.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	In the future, if the interpreter is deleted this channel will
- *	no longer be informed.
+ *	In the future, if the interpreter is deleted this channel will no
+ *	longer be informed.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-TcpServerCloseProc(callbackData)
-    ClientData callbackData;	/* The data passed in the call to
-                                 * Tcl_CreateCloseHandler. */
+TcpServerCloseProc(
+    ClientData callbackData)	/* The data passed in the call to
+				 * Tcl_CreateCloseHandler. */
 {
-    AcceptCallback *acceptCallbackPtr;
-    				/* The actual data. */
+    AcceptCallback *acceptCallbackPtr = (AcceptCallback *) callbackData;
+				/* The actual data. */
 
-    acceptCallbackPtr = (AcceptCallback *) callbackData;
-    if (acceptCallbackPtr->interp != (Tcl_Interp *) NULL) {
-        UnregisterTcpServerInterpCleanupProc(acceptCallbackPtr->interp,
-                acceptCallbackPtr);
+    if (acceptCallbackPtr->interp != NULL) {
+	UnregisterTcpServerInterpCleanupProc(acceptCallbackPtr->interp,
+		acceptCallbackPtr);
     }
-    Tcl_EventuallyFree((ClientData) acceptCallbackPtr->script, TCL_DYNAMIC);
+    Tcl_EventuallyFree(acceptCallbackPtr->script, TCL_DYNAMIC);
     ckfree((char *) acceptCallbackPtr);
 }
 
@@ -1261,8 +1393,8 @@ TcpServerCloseProc(callbackData)
  *
  * Tcl_SocketObjCmd --
  *
- *	This procedure is invoked to process the "socket" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "socket" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -1274,127 +1406,115 @@ TcpServerCloseProc(callbackData)
  */
 
 int
-Tcl_SocketObjCmd(notUsed, interp, objc, objv)
-    ClientData notUsed;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_SocketObjCmd(
+    ClientData notUsed,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    static CONST char *socketOptions[] = {
-	"-async", "-myaddr", "-myport","-server", (char *) NULL
+    static const char *socketOptions[] = {
+	"-async", "-myaddr", "-myport","-server", NULL
     };
     enum socketOptions {
-	SKT_ASYNC,      SKT_MYADDR,      SKT_MYPORT,      SKT_SERVER  
+	SKT_ASYNC, SKT_MYADDR, SKT_MYPORT, SKT_SERVER
     };
-    int optionIndex, a, server, port;
-    char *arg, *copyScript, *host, *script;
-    char *myaddr = NULL;
-    int myport = 0;
-    int async = 0;
+    int optionIndex, a, server = 0, port, myport = 0, async = 0;
+    char *host, *script = NULL, *myaddr = NULL;
     Tcl_Channel chan;
-    AcceptCallback *acceptCallbackPtr;
-    
-    server = 0;
-    script = NULL;
 
     if (TclpHasSockets(interp) != TCL_OK) {
 	return TCL_ERROR;
     }
 
     for (a = 1; a < objc; a++) {
-	arg = Tcl_GetString(objv[a]);
+	const char *arg = Tcl_GetString(objv[a]);
+
 	if (arg[0] != '-') {
 	    break;
 	}
-	if (Tcl_GetIndexFromObj(interp, objv[a], socketOptions,
-		"option", TCL_EXACT, &optionIndex) != TCL_OK) {
+	if (Tcl_GetIndexFromObj(interp, objv[a], socketOptions, "option",
+		TCL_EXACT, &optionIndex) != TCL_OK) {
 	    return TCL_ERROR;
 	}
 	switch ((enum socketOptions) optionIndex) {
-	    case SKT_ASYNC: {
-                if (server == 1) {
-                    Tcl_AppendResult(interp,
-                            "cannot set -async option for server sockets",
-                            (char *) NULL);
-                    return TCL_ERROR;
-                }
-                async = 1;		
-		break;
+	case SKT_ASYNC:
+	    if (server == 1) {
+		Tcl_AppendResult(interp,
+			"cannot set -async option for server sockets", NULL);
+		return TCL_ERROR;
 	    }
-	    case SKT_MYADDR: {
-		a++;
-                if (a >= objc) {
-		    Tcl_AppendResult(interp,
-			    "no argument given for -myaddr option",
-                            (char *) NULL);
-		    return TCL_ERROR;
-		}
-                myaddr = Tcl_GetString(objv[a]);
-		break;
+	    async = 1;
+	    break;
+	case SKT_MYADDR:
+	    a++;
+	    if (a >= objc) {
+		Tcl_AppendResult(interp,
+			"no argument given for -myaddr option", NULL);
+		return TCL_ERROR;
 	    }
-	    case SKT_MYPORT: {
-		char *myPortName;
-		a++;
-                if (a >= objc) {
-		    Tcl_AppendResult(interp,
-			    "no argument given for -myport option",
-                            (char *) NULL);
-		    return TCL_ERROR;
-		}
-		myPortName = Tcl_GetString(objv[a]);
-		if (TclSockGetPort(interp, myPortName, "tcp", &myport)
-			!= TCL_OK) {
-		    return TCL_ERROR;
-		}
-		break;
+	    myaddr = TclGetString(objv[a]);
+	    break;
+	case SKT_MYPORT: {
+	    char *myPortName;
+
+	    a++;
+	    if (a >= objc) {
+		Tcl_AppendResult(interp,
+			"no argument given for -myport option", NULL);
+		return TCL_ERROR;
 	    }
-	    case SKT_SERVER: {
-                if (async == 1) {
-                    Tcl_AppendResult(interp,
-                            "cannot set -async option for server sockets",
-                            (char *) NULL);
-                    return TCL_ERROR;
-                }
-		server = 1;
-		a++;
-		if (a >= objc) {
-		    Tcl_AppendResult(interp,
-			    "no argument given for -server option",
-                            (char *) NULL);
-		    return TCL_ERROR;
-		}
-                script = Tcl_GetString(objv[a]);
-		break;
+	    myPortName = TclGetString(objv[a]);
+	    if (TclSockGetPort(interp, myPortName, "tcp", &myport) != TCL_OK) {
+		return TCL_ERROR;
 	    }
-	    default: {
-		panic("Tcl_SocketObjCmd: bad option index to SocketOptions");
+	    break;
+	}
+	case SKT_SERVER:
+	    if (async == 1) {
+		Tcl_AppendResult(interp,
+			"cannot set -async option for server sockets", NULL);
+		return TCL_ERROR;
+	    }
+	    server = 1;
+	    a++;
+	    if (a >= objc) {
+		Tcl_AppendResult(interp,
+			"no argument given for -server option", NULL);
+		return TCL_ERROR;
 	    }
+	    script = TclGetString(objv[a]);
+	    break;
+	default:
+	    Tcl_Panic("Tcl_SocketObjCmd: bad option index to SocketOptions");
 	}
     }
     if (server) {
-        host = myaddr;		/* NULL implies INADDR_ANY */
+	host = myaddr;		/* NULL implies INADDR_ANY */
 	if (myport != 0) {
-	    Tcl_AppendResult(interp, "Option -myport is not valid for servers",
+	    Tcl_AppendResult(interp, "option -myport is not valid for servers",
 		    NULL);
 	    return TCL_ERROR;
 	}
     } else if (a < objc) {
-	host = Tcl_GetString(objv[a]);
+	host = TclGetString(objv[a]);
 	a++;
     } else {
-wrongNumArgs:
-	Tcl_AppendResult(interp, "wrong # args: should be either:\n",
-		Tcl_GetString(objv[0]),
-                " ?-myaddr addr? ?-myport myport? ?-async? host port\n",
-		Tcl_GetString(objv[0]),
-                " -server command ?-myaddr addr? port",
-                (char *) NULL);
-        return TCL_ERROR;
+	Interp *iPtr;
+
+    wrongNumArgs:
+	iPtr = (Interp *) interp;
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"?-myaddr addr? ?-myport myport? ?-async? host port");
+	iPtr->flags |= INTERP_ALTERNATE_WRONG_ARGS;
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"-server command ?-myaddr addr? port");
+	iPtr->flags &= ~INTERP_ALTERNATE_WRONG_ARGS;
+	return TCL_ERROR;
     }
 
     if (a == objc-1) {
-	if (TclSockGetPort(interp, Tcl_GetString(objv[a]),
-		"tcp", &port) != TCL_OK) {
+	if (TclSockGetPort(interp, TclGetString(objv[a]), "tcp",
+		&port) != TCL_OK) {
 	    return TCL_ERROR;
 	}
     } else {
@@ -1402,46 +1522,47 @@ wrongNumArgs:
     }
 
     if (server) {
-        acceptCallbackPtr = (AcceptCallback *) ckalloc((unsigned)
-                sizeof(AcceptCallback));
-        copyScript = ckalloc((unsigned) strlen(script) + 1);
-        strcpy(copyScript, script);
-        acceptCallbackPtr->script = copyScript;
-        acceptCallbackPtr->interp = interp;
-        chan = Tcl_OpenTcpServer(interp, port, host, AcceptCallbackProc,
-                (ClientData) acceptCallbackPtr);
-        if (chan == (Tcl_Channel) NULL) {
-            ckfree(copyScript);
-            ckfree((char *) acceptCallbackPtr);
-            return TCL_ERROR;
-        }
-
-        /*
-         * Register with the interpreter to let us know when the
-         * interpreter is deleted (by having the callback set the
-         * acceptCallbackPtr->interp field to NULL). This is to
-         * avoid trying to eval the script in a deleted interpreter.
-         */
-
-        RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr);
-        
-        /*
-         * Register a close callback. This callback will inform the
-         * interpreter (if it still exists) that this channel does not
-         * need to be informed when the interpreter is deleted.
-         */
-        
-        Tcl_CreateCloseHandler(chan, TcpServerCloseProc,
-                (ClientData) acceptCallbackPtr);
+	AcceptCallback *acceptCallbackPtr = (AcceptCallback *)
+		ckalloc((unsigned) sizeof(AcceptCallback));
+	unsigned len = strlen(script) + 1;
+	char *copyScript = ckalloc(len);
+
+	memcpy(copyScript, script, len);
+	acceptCallbackPtr->script = copyScript;
+	acceptCallbackPtr->interp = interp;
+	chan = Tcl_OpenTcpServer(interp, port, host, AcceptCallbackProc,
+		acceptCallbackPtr);
+	if (chan == NULL) {
+	    ckfree(copyScript);
+	    ckfree((char *) acceptCallbackPtr);
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Register with the interpreter to let us know when the interpreter
+	 * is deleted (by having the callback set the interp field of the
+	 * acceptCallbackPtr's structure to NULL). This is to avoid trying to
+	 * eval the script in a deleted interpreter.
+	 */
+
+	RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr);
+
+	/*
+	 * Register a close callback. This callback will inform the
+	 * interpreter (if it still exists) that this channel does not need to
+	 * be informed when the interpreter is deleted.
+	 */
+
+	Tcl_CreateCloseHandler(chan, TcpServerCloseProc, acceptCallbackPtr);
     } else {
-        chan = Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async);
-        if (chan == (Tcl_Channel) NULL) {
-            return TCL_ERROR;
-        }
-    }
-    Tcl_RegisterChannel(interp, chan);            
-    Tcl_AppendResult(interp, Tcl_GetChannelName(chan), (char *) NULL);
-    
+	chan = Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async);
+	if (chan == NULL) {
+	    return TCL_ERROR;
+	}
+    }
+    Tcl_RegisterChannel(interp, chan);
+    Tcl_AppendResult(interp, Tcl_GetChannelName(chan), NULL);
+
     return TCL_OK;
 }
 
@@ -1450,32 +1571,30 @@ wrongNumArgs:
  *
  * Tcl_FcopyObjCmd --
  *
- *	This procedure is invoked to process the "fcopy" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "fcopy" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Moves data between two channels and possibly sets up a
- *	background copy handler.
+ *	Moves data between two channels and possibly sets up a background copy
+ *	handler.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FcopyObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_FcopyObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Channel inChan, outChan;
-    char *arg;
-    int mode, i;
-    int toRead, index;
+    int mode, i, toRead, index;
     Tcl_Obj *cmdPtr;
-    static CONST char* switches[] = { "-size", "-command", NULL };
+    static const char* switches[] = { "-size", "-command", NULL };
     enum { FcopySize, FcopyCommand };
 
     if ((objc < 3) || (objc > 7) || (objc == 4) || (objc == 6)) {
@@ -1485,60 +1604,269 @@ Tcl_FcopyObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Parse the channel arguments and verify that they are readable
-     * or writable, as appropriate.
+     * Parse the channel arguments and verify that they are readable or
+     * writable, as appropriate.
      */
 
-    arg = Tcl_GetString(objv[1]);
-    inChan = Tcl_GetChannel(interp, arg, &mode);
-    if (inChan == (Tcl_Channel) NULL) {
+    if (TclGetChannelFromObj(interp, objv[1], &inChan, &mode, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
     if ((mode & TCL_READABLE) == 0) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
-		arg, 
-                "\" wasn't opened for reading", (char *) NULL);
-        return TCL_ERROR;
-    }
-    arg = Tcl_GetString(objv[2]);
-    outChan = Tcl_GetChannel(interp, arg, &mode);
-    if (outChan == (Tcl_Channel) NULL) {
+	Tcl_AppendResult(interp, "channel \"", TclGetString(objv[1]),
+		"\" wasn't opened for reading", NULL);
+	return TCL_ERROR;
+    }
+    if (TclGetChannelFromObj(interp, objv[2], &outChan, &mode, 0) != TCL_OK) {
 	return TCL_ERROR;
     }
     if ((mode & TCL_WRITABLE) == 0) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
-		arg, 
-                "\" wasn't opened for writing", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "channel \"", TclGetString(objv[2]),
+		"\" wasn't opened for writing", NULL);
+	return TCL_ERROR;
     }
 
     toRead = -1;
     cmdPtr = NULL;
     for (i = 3; i < objc; i += 2) {
 	if (Tcl_GetIndexFromObj(interp, objv[i], switches, "switch", 0,
-		(int *) &index) != TCL_OK) {
+		&index) != TCL_OK) {
 	    return TCL_ERROR;
 	}
 	switch (index) {
-	    case FcopySize:
-		if (Tcl_GetIntFromObj(interp, objv[i+1], &toRead) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (toRead<0) {
-		    /*
-		     * Handle all negative sizes like -1, meaning 'copy all'.
-		     * By resetting toRead we avoid changes in the
-		     * core copying functions (which explicitly check
-		     * for -1 and crash on any other negative value).
-		     */
-		    toRead = -1;
-		}
-		break;
-	    case FcopyCommand:
-		cmdPtr = objv[i+1];
-		break;
+	case FcopySize:
+	    if (TclGetIntFromObj(interp, objv[i+1], &toRead) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    if (toRead<0) {
+		/*
+		 * Handle all negative sizes like -1, meaning 'copy all'. By
+		 * resetting toRead we avoid changes in the core copying
+		 * functions (which explicitly check for -1 and crash on any
+		 * other negative value).
+		 */
+		toRead = -1;
+	    }
+	    break;
+	case FcopyCommand:
+	    cmdPtr = objv[i+1];
+	    break;
 	}
     }
 
     return TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr);
 }
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * ChanPendingObjCmd --
+ *
+ *	This function is invoked to process the Tcl "chan pending" command
+ *	(TIP #287). See the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Sets interp's result to the number of bytes of buffered input or
+ *	output (depending on whether the first argument is "input" or
+ *	"output"), or -1 if the channel wasn't opened for that mode.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+ChanPendingObjCmd(
+    ClientData unused,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_Channel chan;
+    int index, mode;
+    static const char *options[] = {"input", "output", NULL};
+    enum options {PENDING_INPUT, PENDING_OUTPUT};
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "mode channelId");
+	return TCL_ERROR;
+    }
+
+    if (Tcl_GetIndexFromObj(interp, objv[1], options, "mode", 0,
+	    &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (TclGetChannelFromObj(interp, objv[2], &chan, &mode, 0) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    switch ((enum options) index) {
+    case PENDING_INPUT:
+	if ((mode & TCL_READABLE) == 0) {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(-1));
+	} else {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(Tcl_InputBuffered(chan)));
+	}
+	break;
+    case PENDING_OUTPUT:
+	if ((mode & TCL_WRITABLE) == 0) {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(-1));
+	} else {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(Tcl_OutputBuffered(chan)));
+	}
+	break;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ChanTruncateObjCmd --
+ *
+ *	This function is invoked to process the "chan truncate" Tcl command.
+ *	See the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Truncates a channel (or rather a file underlying a channel).
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ChanTruncateObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_Channel chan;
+    Tcl_WideInt length;
+
+    if ((objc < 2) || (objc > 3)) {
+	Tcl_WrongNumArgs(interp, 1, objv, "channelId ?length?");
+	return TCL_ERROR;
+    }
+    if (TclGetChannelFromObj(interp, objv[1], &chan, NULL, 0) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (objc == 3) {
+	/*
+	 * User is supplying an explicit length.
+	 */
+
+	if (Tcl_GetWideIntFromObj(interp, objv[2], &length) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (length < 0) {
+	    Tcl_AppendResult(interp,
+		    "cannot truncate to negative length of file", NULL);
+	    return TCL_ERROR;
+	}
+    } else {
+	/*
+	 * User wants to truncate to the current file position.
+	 */
+
+	length = Tcl_Tell(chan);
+	if (length == Tcl_WideAsLong(-1)) {
+	    Tcl_AppendResult(interp,
+		    "could not determine current location in \"",
+		    TclGetString(objv[1]), "\": ",
+		    Tcl_PosixError(interp), NULL);
+	    return TCL_ERROR;
+	}
+    }
+
+    if (Tcl_TruncateChannel(chan, length) != TCL_OK) {
+	Tcl_AppendResult(interp, "error during truncate on \"",
+		TclGetString(objv[1]), "\": ",
+		Tcl_PosixError(interp), NULL);
+	return TCL_ERROR;
+    }
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitChanCmd --
+ *
+ *	This function is invoked to create the "chan" Tcl command. See the
+ *	user documentation for details on what it does.
+ *
+ * Results:
+ *	A Tcl command handle.
+ *
+ * Side effects:
+ *	None (since nothing is byte-compiled).
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Command
+TclInitChanCmd(
+    Tcl_Interp *interp)
+{
+    /*
+     * Most commands are plugged directly together, but some are done via
+     * alias-like rewriting; [chan configure] is this way for security reasons
+     * (want overwriting of [fconfigure] to control that nicely), and [chan
+     * names] because the functionality isn't available as a separate command
+     * function at the moment.
+     */
+    static const EnsembleImplMap initMap[] = {
+	{"blocked",	Tcl_FblockedObjCmd},
+	{"close",	Tcl_CloseObjCmd},
+	{"copy",	Tcl_FcopyObjCmd},
+	{"create",	TclChanCreateObjCmd},		/* TIP #219 */
+	{"eof",		Tcl_EofObjCmd},
+	{"event",	Tcl_FileEventObjCmd},
+	{"flush",	Tcl_FlushObjCmd},
+	{"gets",	Tcl_GetsObjCmd},
+	{"pending",	ChanPendingObjCmd},		/* TIP #287 */
+	{"postevent",	TclChanPostEventObjCmd},	/* TIP #219 */
+	{"puts",	Tcl_PutsObjCmd},
+	{"read",	Tcl_ReadObjCmd},
+	{"seek",	Tcl_SeekObjCmd},
+	{"tell",	Tcl_TellObjCmd},
+	{"truncate",	ChanTruncateObjCmd},		/* TIP #208 */
+	{NULL}
+    };
+    static const char *extras[] = {
+	"configure",	"::fconfigure",
+	"names",	"::file channels",
+	NULL
+    };
+    Tcl_Command ensemble;
+    Tcl_Obj *mapObj;
+    int i;
+
+    ensemble = TclMakeEnsemble(interp, "chan", initMap);
+    Tcl_GetEnsembleMappingDict(NULL, ensemble, &mapObj);
+    for (i=0 ; extras[i] ; i+=2) {
+	/*
+	 * Can assume that reference counts are all incremented.
+	 */
+
+	Tcl_DictObjPut(NULL, mapObj, Tcl_NewStringObj(extras[i], -1),
+		Tcl_NewStringObj(extras[i+1], -1));
+    }
+    Tcl_SetEnsembleMappingDict(interp, ensemble, mapObj);
+    return ensemble;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclIOGT.c b/generic/tclIOGT.c
index 8699b39..eed21fb 100644
--- a/generic/tclIOGT.c
+++ b/generic/tclIOGT.c
@@ -1,112 +1,101 @@
 /*
  * tclIOGT.c --
  *
- *	Implements a generic transformation exposing the underlying API
- *	at the script level.  Contributed by Andreas Kupries.
+ *	Implements a generic transformation exposing the underlying API at the
+ *	script level. Contributed by Andreas Kupries.
  *
  * Copyright (c) 2000 Ajuba Solutions
  * Copyright (c) 1999-2000 Andreas Kupries (a.kupries@westend.com)
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 #include "tclIO.h"
-
 
 /*
- * Forward declarations of internal procedures.
- * First the driver procedures of the transformation.
+ * Forward declarations of internal procedures. First the driver procedures of
+ * the transformation.
  */
 
-static int		TransformBlockModeProc _ANSI_ARGS_ ((
-				ClientData instanceData, int mode));
-static int		TransformCloseProc _ANSI_ARGS_ ((
-				ClientData instanceData, Tcl_Interp* interp));
-static int		TransformInputProc _ANSI_ARGS_ ((
-				ClientData instanceData,
-				char* buf, int toRead, int* errorCodePtr));
-static int		TransformOutputProc _ANSI_ARGS_ ((
-				ClientData instanceData, CONST char *buf,
-				int toWrite, int* errorCodePtr));
-static int		TransformSeekProc _ANSI_ARGS_ ((
-				ClientData instanceData, long offset,
-				int mode, int* errorCodePtr));
-static int		TransformSetOptionProc _ANSI_ARGS_((
-				ClientData instanceData, Tcl_Interp *interp,
-				CONST char *optionName, CONST char *value));
-static int		TransformGetOptionProc _ANSI_ARGS_((
-				ClientData instanceData, Tcl_Interp *interp,
-				CONST char *optionName, Tcl_DString *dsPtr));
-static void		TransformWatchProc _ANSI_ARGS_ ((
-				ClientData instanceData, int mask));
-static int		TransformGetFileHandleProc _ANSI_ARGS_ ((
-				ClientData instanceData, int direction,
-				ClientData* handlePtr));
-static int		TransformNotifyProc _ANSI_ARGS_ ((
-				ClientData instanceData, int mask));
-static Tcl_WideInt	TransformWideSeekProc _ANSI_ARGS_ ((
-				ClientData instanceData, Tcl_WideInt offset,
-				int mode, int* errorCodePtr));
+static int		TransformBlockModeProc(ClientData instanceData,
+			    int mode);
+static int		TransformCloseProc(ClientData instanceData,
+			    Tcl_Interp *interp);
+static int		TransformInputProc(ClientData instanceData, char *buf,
+			    int toRead, int *errorCodePtr);
+static int		TransformOutputProc(ClientData instanceData,
+			    const char *buf, int toWrite, int *errorCodePtr);
+static int		TransformSeekProc(ClientData instanceData, long offset,
+			    int mode, int *errorCodePtr);
+static int		TransformSetOptionProc(ClientData instanceData,
+			    Tcl_Interp *interp, const char *optionName,
+			    const char *value);
+static int		TransformGetOptionProc(ClientData instanceData,
+			    Tcl_Interp *interp, const char *optionName,
+			    Tcl_DString *dsPtr);
+static void		TransformWatchProc(ClientData instanceData, int mask);
+static int		TransformGetFileHandleProc(ClientData instanceData,
+			    int direction, ClientData *handlePtr);
+static int		TransformNotifyProc(ClientData instanceData, int mask);
+static Tcl_WideInt	TransformWideSeekProc(ClientData instanceData,
+			    Tcl_WideInt offset, int mode, int *errorCodePtr);
 
 /*
- * Forward declarations of internal procedures.
- * Secondly the procedures for handling and generating fileeevents.
+ * Forward declarations of internal procedures. Secondly the procedures for
+ * handling and generating fileeevents.
  */
 
-static void		TransformChannelHandlerTimer _ANSI_ARGS_ ((
-				ClientData clientData));
+static void		TransformChannelHandlerTimer(ClientData clientData);
 
 /*
- * Forward declarations of internal procedures.
- * Third, helper procedures encapsulating essential tasks.
+ * Forward declarations of internal procedures. Third, helper procedures
+ * encapsulating essential tasks.
  */
 
 typedef struct TransformChannelData TransformChannelData;
 
-static int		ExecuteCallback _ANSI_ARGS_ ((
-				TransformChannelData* ctrl, Tcl_Interp* interp,
-				unsigned char* op, unsigned char* buf,
-				int bufLen, int transmit, int preserve));
+static int		ExecuteCallback(TransformChannelData *ctrl,
+			    Tcl_Interp *interp, unsigned char *op,
+			    unsigned char *buf, int bufLen, int transmit,
+			    int preserve);
 
 /*
- * Action codes to give to 'ExecuteCallback' (argument 'transmit')
- * confering to the procedure what to do with the result of the script
- * it calls.
+ * Action codes to give to 'ExecuteCallback' (argument 'transmit'), telling
+ * the procedure what to do with the result of the script it calls.
  */
 
-#define TRANSMIT_DONT  (0) /* No transfer to do */
-#define TRANSMIT_DOWN  (1) /* Transfer to the underlying channel */
-#define TRANSMIT_SELF  (2) /* Transfer into our channel. */
-#define TRANSMIT_IBUF  (3) /* Transfer to internal input buffer */
-#define TRANSMIT_NUM   (4) /* Transfer number to 'maxRead' */
+#define TRANSMIT_DONT	0	/* No transfer to do. */
+#define TRANSMIT_DOWN	1	/* Transfer to the underlying channel. */
+#define TRANSMIT_SELF	2	/* Transfer into our channel. */
+#define TRANSMIT_IBUF	3	/* Transfer to internal input buffer. */
+#define TRANSMIT_NUM	4	/* Transfer number to 'maxRead'. */
 
 /*
- * Codes for 'preserve' of 'ExecuteCallback'
+ * Codes for 'preserve' of 'ExecuteCallback'.
  */
 
-#define P_PRESERVE    (1)
-#define P_NO_PRESERVE (0)
+#define P_PRESERVE	1
+#define P_NO_PRESERVE	0
 
 /*
- * Strings for the action codes delivered to the script implementing
- * a transformation. Argument 'op' of 'ExecuteCallback'.
+ * Strings for the action codes delivered to the script implementing a
+ * transformation. Argument 'op' of 'ExecuteCallback'.
  */
 
-#define A_CREATE_WRITE	(UCHARP ("create/write"))
-#define A_DELETE_WRITE	(UCHARP ("delete/write"))
-#define A_FLUSH_WRITE	(UCHARP ("flush/write"))
-#define A_WRITE		(UCHARP ("write"))
+#define A_CREATE_WRITE	(UCHARP("create/write"))
+#define A_DELETE_WRITE	(UCHARP("delete/write"))
+#define A_FLUSH_WRITE	(UCHARP("flush/write"))
+#define A_WRITE		(UCHARP("write"))
 
-#define A_CREATE_READ	(UCHARP ("create/read"))
-#define A_DELETE_READ	(UCHARP ("delete/read"))
-#define A_FLUSH_READ	(UCHARP ("flush/read"))
-#define A_READ		(UCHARP ("read"))
+#define A_CREATE_READ	(UCHARP("create/read"))
+#define A_DELETE_READ	(UCHARP("delete/read"))
+#define A_FLUSH_READ	(UCHARP("flush/read"))
+#define A_READ		(UCHARP("read"))
 
-#define A_QUERY_MAXREAD (UCHARP ("query/maxRead"))
-#define A_CLEAR_READ	(UCHARP ("clear/read"))
+#define A_QUERY_MAXREAD	(UCHARP("query/maxRead"))
+#define A_CLEAR_READ	(UCHARP("clear/read"))
 
 /*
  * Management of a simple buffer.
@@ -114,74 +103,75 @@ static int		ExecuteCallback _ANSI_ARGS_ ((
 
 typedef struct ResultBuffer ResultBuffer;
 
-static void		ResultClear  _ANSI_ARGS_ ((ResultBuffer* r));
-static void		ResultInit   _ANSI_ARGS_ ((ResultBuffer* r));
-static int		ResultLength _ANSI_ARGS_ ((ResultBuffer* r));
-static int		ResultCopy   _ANSI_ARGS_ ((ResultBuffer* r,
-				unsigned char* buf, int toRead));
-static void		ResultAdd    _ANSI_ARGS_ ((ResultBuffer* r,
-				unsigned char* buf, int toWrite));
+static inline void	ResultClear(ResultBuffer *r);
+static inline void	ResultInit(ResultBuffer *r);
+static inline int	ResultEmpty(ResultBuffer *r);
+static inline int	ResultCopy(ResultBuffer *r, unsigned char *buf,
+			    size_t toRead);
+static inline void	ResultAdd(ResultBuffer *r, unsigned char *buf,
+			    size_t toWrite);
 
 /*
- * This structure describes the channel type structure for tcl based
+ * This structure describes the channel type structure for Tcl-based
  * transformations.
  */
 
 static Tcl_ChannelType transformChannelType = {
-    "transform",			/* Type name. */
-    TCL_CHANNEL_VERSION_3,
-    TransformCloseProc,			/* Close proc. */
-    TransformInputProc,			/* Input proc. */
-    TransformOutputProc,		/* Output proc. */
-    TransformSeekProc,			/* Seek proc. */
-    TransformSetOptionProc,		/* Set option proc. */
-    TransformGetOptionProc,		/* Get option proc. */
-    TransformWatchProc,			/* Initialize notifier. */
-    TransformGetFileHandleProc,		/* Get OS handles out of channel. */
-    NULL,				/* close2proc */
-    TransformBlockModeProc,		/* Set blocking/nonblocking mode.*/
-    NULL,				/* Flush proc. */
-    TransformNotifyProc,                /* Handling of events bubbling up */
-    TransformWideSeekProc,		/* Wide seek proc */
-    NULL
+    "transform",		/* Type name. */
+    TCL_CHANNEL_VERSION_5,	/* v5 channel */
+    TransformCloseProc,		/* Close proc. */
+    TransformInputProc,		/* Input proc. */
+    TransformOutputProc,	/* Output proc. */
+    TransformSeekProc,		/* Seek proc. */
+    TransformSetOptionProc,	/* Set option proc. */
+    TransformGetOptionProc,	/* Get option proc. */
+    TransformWatchProc,		/* Initialize notifier. */
+    TransformGetFileHandleProc,	/* Get OS handles out of channel. */
+    NULL,			/* close2proc */
+    TransformBlockModeProc,	/* Set blocking/nonblocking mode.*/
+    NULL,			/* Flush proc. */
+    TransformNotifyProc,	/* Handling of events bubbling up. */
+    TransformWideSeekProc,	/* Wide seek proc. */
+    NULL,			/* Thread action. */
+    NULL			/* Truncate. */
 };
 
 /*
  * Possible values for 'flags' field in control structure, see below.
  */
 
-#define CHANNEL_ASYNC		(1<<0) /* non-blocking mode */
+#define CHANNEL_ASYNC (1<<0)	/* Non-blocking mode. */
 
 /*
- * Definition of the structure containing the information about the
- * internal input buffer.
+ * Definition of the structure containing the information about the internal
+ * input buffer.
  */
 
 struct ResultBuffer {
-    unsigned char* buf;       /* Reference to the buffer area */
-    int		   allocated; /* Allocated size of the buffer area */
-    int		   used;      /* Number of bytes in the buffer, <= allocated */
+    unsigned char *buf;		/* Reference to the buffer area. */
+    size_t allocated;		/* Allocated size of the buffer area. */
+    size_t used;		/* Number of bytes in the buffer, no more than
+				 * number allocated. */
 };
 
 /*
- * Additional bytes to allocate during buffer expansion
+ * Additional bytes to allocate during buffer expansion.
  */
 
-#define INCREMENT (512)
+#define INCREMENT	512
 
 /*
- * Number of milliseconds to wait before firing an event to flush
- * out information waiting in buffers (fileevent support).
+ * Number of milliseconds to wait before firing an event to flush out
+ * information waiting in buffers (fileevent support).
  */
 
-#define FLUSH_DELAY (5)
+#define FLUSH_DELAY	5
 
 /*
  * Convenience macro to make some casts easier to use.
  */
 
-#define UCHARP(x) ((unsigned char*) (x))
-#define NO_INTERP ((Tcl_Interp*) NULL)
+#define UCHARP(x)	((unsigned char *) (x))
 
 /*
  * Definition of a structure used by all transformations generated here to
@@ -189,48 +179,47 @@ struct ResultBuffer {
  */
 
 struct TransformChannelData {
-
     /*
      * General section. Data to integrate the transformation into the channel
      * system.
      */
 
-    Tcl_Channel self;     /* Our own Channel handle */
-    int readIsFlushed;    /* Flag to note wether in.flushProc was called or not
-			   */
-    int flags;            /* Currently CHANNEL_ASYNC or zero */
-    int watchMask;        /* Current watch/event/interest mask */
-    int mode;             /* mode of parent channel, OR'ed combination of
-			   * TCL_READABLE, TCL_WRITABLE */
-    Tcl_TimerToken timer; /* Timer for automatic flushing of information
-			   * sitting in an internal buffer. Required for full
-			   * fileevent support */
+    Tcl_Channel self;		/* Our own Channel handle. */
+    int readIsFlushed;		/* Flag to note whether in.flushProc was
+				 * called or not. */
+    int flags;			/* Currently CHANNEL_ASYNC or zero. */
+    int watchMask;		/* Current watch/event/interest mask. */
+    int mode;			/* Mode of parent channel, OR'ed combination
+				 * of TCL_READABLE, TCL_WRITABLE. */
+    Tcl_TimerToken timer;	/* Timer for automatic flushing of information
+				 * sitting in an internal buffer. Required for
+				 * full fileevent support. */
+
     /*
      * Transformation specific data.
      */
 
-    int maxRead;            /* Maximum allowed number of bytes to read, as
-			     * given to us by the tcl script implementing the
-			     * transformation. */
-    Tcl_Interp*    interp;  /* Reference to the interpreter which created the
-			     * transformation. Used to execute the code
-			     * below. */
-    Tcl_Obj*       command; /* Tcl code to execute for a buffer */
-    ResultBuffer   result;  /* Internal buffer used to store the result of a
-			     * transformation of incoming data. Additionally
-			     * serves as buffer of all data not yet consumed by
-			     * the reader. */
+    int maxRead;		/* Maximum allowed number of bytes to read, as
+				 * given to us by the Tcl script implementing
+				 * the transformation. */
+    Tcl_Interp *interp;		/* Reference to the interpreter which created
+				 * the transformation. Used to execute the
+				 * code below. */
+    Tcl_Obj *command;		/* Tcl code to execute for a buffer */
+    ResultBuffer result;	/* Internal buffer used to store the result of
+				 * a transformation of incoming data. Also
+				 * serves as buffer of all data not yet
+				 * consumed by the reader. */
 };
-
 
 /*
  *----------------------------------------------------------------------
  *
  * TclChannelTransform --
  *
- *	Implements the Tcl "testchannel transform" debugging command.
- *	This is part of the testing environment.  This sets up a tcl
- *	script (cmdObjPtr) to be used as a transform on the channel.
+ *	Implements the Tcl "testchannel transform" debugging command. This is
+ *	part of the testing environment. This sets up a tcl script (cmdObjPtr)
+ *	to be used as a transform on the channel.
  *
  * Results:
  *	A standard Tcl result.
@@ -243,69 +232,63 @@ struct TransformChannelData {
 
 	/* ARGSUSED */
 int
-TclChannelTransform(interp, chan, cmdObjPtr)
-    Tcl_Interp	*interp;	/* Interpreter for result. */
-    Tcl_Channel chan;		/* Channel to transform. */
-    Tcl_Obj	*cmdObjPtr;	/* Script to use for transform. */
+TclChannelTransform(
+    Tcl_Interp *interp,		/* Interpreter for result. */
+    Tcl_Channel chan,		/* Channel to transform. */
+    Tcl_Obj *cmdObjPtr)		/* Script to use for transform. */
 {
-    Channel			*chanPtr;	/* The actual channel. */
-    ChannelState		*statePtr;	/* state info for channel */
-    int				mode;		/* rw mode of the channel */
-    TransformChannelData	*dataPtr;
-    int				res;
-    Tcl_DString			ds;
-
-    if (chan == (Tcl_Channel) NULL) {
+    Channel *chanPtr;		/* The actual channel. */
+    ChannelState *statePtr;	/* State info for channel. */
+    int mode;			/* Read/write mode of the channel. */
+    TransformChannelData *dataPtr;
+    Tcl_DString ds;
+
+    if (chan == NULL) {
 	return TCL_ERROR;
     }
-    chanPtr	= (Channel *) chan;
-    statePtr	= chanPtr->state;
-    chanPtr	= statePtr->topChanPtr;
-    chan	= (Tcl_Channel) chanPtr;
-    mode	= (statePtr->flags & (TCL_READABLE|TCL_WRITABLE));
+
+    chanPtr = (Channel *) chan;
+    statePtr = chanPtr->state;
+    chanPtr = statePtr->topChanPtr;
+    chan = (Tcl_Channel) chanPtr;
+    mode = (statePtr->flags & (TCL_READABLE|TCL_WRITABLE));
 
     /*
-     * Now initialize the transformation state and stack it upon the
-     * specified channel. One of the necessary things to do is to
-     * retrieve the blocking regime of the underlying channel and to
-     * use the same for us too.
+     * Now initialize the transformation state and stack it upon the specified
+     * channel. One of the necessary things to do is to retrieve the blocking
+     * regime of the underlying channel and to use the same for us too.
      */
 
-    dataPtr = (TransformChannelData*) ckalloc(sizeof(TransformChannelData));
+    dataPtr = (TransformChannelData *) ckalloc(sizeof(TransformChannelData));
 
-    Tcl_DStringInit (&ds);
+    Tcl_DStringInit(&ds);
     Tcl_GetChannelOption(interp, chan, "-blocking", &ds);
-
     dataPtr->readIsFlushed = 0;
-    dataPtr->flags	= 0;
-
+    dataPtr->flags = 0;
     if (ds.string[0] == '0') {
 	dataPtr->flags |= CHANNEL_ASYNC;
     }
-
-    Tcl_DStringFree (&ds);
-
-    dataPtr->self	= chan;
-    dataPtr->watchMask	= 0;
-    dataPtr->mode	= mode;
-    dataPtr->timer	= (Tcl_TimerToken) NULL;
-    dataPtr->maxRead	= 4096; /* Initial value not relevant */
-    dataPtr->interp	= interp;
-    dataPtr->command	= cmdObjPtr;
-
+    Tcl_DStringFree(&ds);
+
+    dataPtr->self = chan;
+    dataPtr->watchMask = 0;
+    dataPtr->mode = mode;
+    dataPtr->timer = NULL;
+    dataPtr->maxRead = 4096;	/* Initial value not relevant. */
+    dataPtr->interp = interp;
+    dataPtr->command = cmdObjPtr;
     Tcl_IncrRefCount(dataPtr->command);
 
     ResultInit(&dataPtr->result);
 
-    dataPtr->self = Tcl_StackChannel(interp, &transformChannelType,
-	    (ClientData) dataPtr, mode, chan);
-    if (dataPtr->self == (Tcl_Channel) NULL) {
+    dataPtr->self = Tcl_StackChannel(interp, &transformChannelType, dataPtr,
+	    mode, chan);
+    if (dataPtr->self == NULL) {
 	Tcl_AppendResult(interp, "\nfailed to stack channel \"",
-		Tcl_GetChannelName(chan), "\"", (char *) NULL);
-
+		Tcl_GetChannelName(chan), "\"", NULL);
 	Tcl_DecrRefCount(dataPtr->command);
 	ResultClear(&dataPtr->result);
-	ckfree((VOID *) dataPtr);
+	ckfree((char *) dataPtr);
 	return TCL_ERROR;
     }
 
@@ -313,65 +296,62 @@ TclChannelTransform(interp, chan, cmdObjPtr)
      * At last initialize the transformation at the script level.
      */
 
-    if (dataPtr->mode & TCL_WRITABLE) {
-	res = ExecuteCallback (dataPtr, NO_INTERP, A_CREATE_WRITE,
-		NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE);
-
-	if (res != TCL_OK) {
-	    Tcl_UnstackChannel(interp, chan);
-	    return TCL_ERROR;
-	}
+    if ((dataPtr->mode & TCL_WRITABLE) && ExecuteCallback(dataPtr, NULL,
+	    A_CREATE_WRITE, NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE) != TCL_OK){
+	Tcl_UnstackChannel(interp, chan);
+	return TCL_ERROR;
     }
 
-    if (dataPtr->mode & TCL_READABLE) {
-	res = ExecuteCallback (dataPtr, NO_INTERP, A_CREATE_READ,
-		NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE);
-
-	if (res != TCL_OK) {
-	    ExecuteCallback (dataPtr, NO_INTERP, A_DELETE_WRITE,
-		    NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE);
-
-	    Tcl_UnstackChannel(interp, chan);
-	    return TCL_ERROR;
-	}
+    if ((dataPtr->mode & TCL_READABLE) && ExecuteCallback(dataPtr, NULL,
+	    A_CREATE_READ, NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE) != TCL_OK) {
+	ExecuteCallback(dataPtr, NULL, A_DELETE_WRITE, NULL, 0, TRANSMIT_DONT,
+		P_NO_PRESERVE);
+	Tcl_UnstackChannel(interp, chan);
+	return TCL_ERROR;
     }
 
     return TCL_OK;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	ExecuteCallback --
+ * ExecuteCallback --
  *
- *	Executes the defined callback for buffer and
- *	operation.
+ *	Executes the defined callback for buffer and operation.
  *
- *	Sideeffects:
- *		As of the executed tcl script.
+ * Side effects:
+ *	As of the executed tcl script.
  *
- *	Result:
- *		A standard TCL error code. In case of an
- *		error a message is left in the result area
- *		of the specified interpreter.
+ * Result:
+ *	A standard TCL error code. In case of an error a message is left in
+ *	the result area of the specified interpreter.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-ExecuteCallback (dataPtr, interp, op, buf, bufLen, transmit, preserve)
-    TransformChannelData* dataPtr;  /* Transformation with the callback */
-    Tcl_Interp*           interp;   /* Current interpreter, possibly NULL */
-    unsigned char*        op;       /* Operation invoking the callback */
-    unsigned char*        buf;      /* Buffer to give to the script. */
-    int			  bufLen;   /* Ands its length */
-    int                   transmit; /* Flag, determines whether the result
-				     * of the callback is sent to the
-				     * underlying channel or not. */
-    int                   preserve; /* Flag. If true the procedure will
-				     * preserver the result state of all
-				     * accessed interpreters. */
+ExecuteCallback(
+    TransformChannelData *dataPtr,
+				/* Transformation with the callback. */
+    Tcl_Interp *interp,		/* Current interpreter, possibly NULL. */
+    unsigned char *op,		/* Operation invoking the callback. */
+    unsigned char *buf,		/* Buffer to give to the script. */
+    int bufLen,			/* And its length. */
+    int transmit,		/* Flag, determines whether the result of the
+				 * callback is sent to the underlying channel
+				 * or not. */
+    int preserve)		/* Flag. If true the procedure will preserve
+				 * the result state of all accessed
+				 * interpreters. */
 {
+    Tcl_Obj *resObj;		/* See below, switch (transmit). */
+    int resLen;
+    unsigned char *resBuf;
+    Tcl_InterpState state = NULL;
+    int res = TCL_OK;
+    Tcl_Obj *command = Tcl_DuplicateObj(dataPtr->command);
+
     /*
      * Step 1, create the complete command to execute. Do this by appending
      * operation and buffer to operate upon to a copy of the callback
@@ -380,72 +360,43 @@ ExecuteCallback (dataPtr, interp, op, buf, bufLen, transmit, preserve)
      * arguments. Feather's curried commands would come in handy here.
      */
 
-    Tcl_Obj* resObj;		    /* See below, switch (transmit) */
-    int resLen;
-    unsigned char* resBuf;
-    Tcl_SavedResult ciSave;
-    int res = TCL_OK;
-    Tcl_Obj* command = Tcl_DuplicateObj (dataPtr->command);
-    Tcl_Obj* temp;
-
-    if (preserve) {
-	Tcl_SaveResult (dataPtr->interp, &ciSave);
-    }
-
-    if (command == (Tcl_Obj*) NULL) {
-        /* Memory allocation problem */
-        res = TCL_ERROR;
-        goto cleanup;
+    if (preserve == P_PRESERVE) {
+	state = Tcl_SaveInterpState(dataPtr->interp, res);
     }
 
     Tcl_IncrRefCount(command);
-
-    temp = Tcl_NewStringObj((char*) op, -1);
-
-    if (temp == (Tcl_Obj*) NULL) {
-        /* Memory allocation problem */
-        res = TCL_ERROR;
-        goto cleanup;
-    }
-
-    res = Tcl_ListObjAppendElement(dataPtr->interp, command, temp);
-
-    if (res != TCL_OK)
+    res = Tcl_ListObjAppendElement(dataPtr->interp, command,
+	    Tcl_NewStringObj((char *) op, -1));
+    if (res != TCL_OK) {
 	goto cleanup;
+    }
 
     /*
-     * Use a byte-array to prevent the misinterpretation of binary data
-     * coming through as UTF while at the tcl level.
+     * Use a byte-array to prevent the misinterpretation of binary data coming
+     * through as UTF while at the tcl level.
      */
 
-    temp = Tcl_NewByteArrayObj(buf, bufLen);
-
-    if (temp == (Tcl_Obj*) NULL) {
-        /* Memory allocation problem */
-	res = TCL_ERROR;
-        goto cleanup;
+    res = Tcl_ListObjAppendElement(dataPtr->interp, command,
+	    Tcl_NewByteArrayObj(buf, bufLen));
+    if (res != TCL_OK) {
+	goto cleanup;
     }
 
-    res = Tcl_ListObjAppendElement (dataPtr->interp, command, temp);
-
-    if (res != TCL_OK)
-        goto cleanup;
-
     /*
-     * Step 2, execute the command at the global level of the interpreter
-     * used to create the transformation. Destroy the command afterward.
-     * If an error occured and the current interpreter is defined and not
-     * equal to the interpreter for the callback, then copy the error
-     * message into current interpreter. Don't copy if in preservation mode.
+     * Step 2, execute the command at the global level of the interpreter used
+     * to create the transformation. Destroy the command afterward. If an
+     * error occured and the current interpreter is defined and not equal to
+     * the interpreter for the callback, then copy the error message into
+     * current interpreter. Don't copy if in preservation mode.
      */
 
     res = Tcl_EvalObjEx(dataPtr->interp, command, TCL_EVAL_GLOBAL);
-    Tcl_DecrRefCount (command);
-    command = (Tcl_Obj*) NULL;
+    Tcl_DecrRefCount(command);
+    command = NULL;
 
-    if ((res != TCL_OK) && (interp != NO_INTERP) &&
-	    (dataPtr->interp != interp) && !preserve) {
-        Tcl_SetObjResult(interp, Tcl_GetObjResult(dataPtr->interp));
+    if ((res != TCL_OK) && (interp != NULL) && (dataPtr->interp != interp)
+	    && (preserve == P_NO_PRESERVE)) {
+	Tcl_SetObjResult(interp, Tcl_GetObjResult(dataPtr->interp));
 	return res;
     }
 
@@ -455,121 +406,115 @@ ExecuteCallback (dataPtr, interp, op, buf, bufLen, transmit, preserve)
      */
 
     switch (transmit) {
-	case TRANSMIT_DONT:
-	    /* nothing to do */
-	    break;
-
-	case TRANSMIT_DOWN:
-	    resObj = Tcl_GetObjResult(dataPtr->interp);
-	    resBuf = (unsigned char*) Tcl_GetByteArrayFromObj(resObj, &resLen);
-	    Tcl_WriteRaw(Tcl_GetStackedChannel(dataPtr->self),
-		    (char*) resBuf, resLen);
-	    break;
-
-	case TRANSMIT_SELF:
-	    resObj = Tcl_GetObjResult (dataPtr->interp);
-	    resBuf = (unsigned char*) Tcl_GetByteArrayFromObj(resObj, &resLen);
-	    Tcl_WriteRaw(dataPtr->self, (char*) resBuf, resLen);
-	    break;
-
-	case TRANSMIT_IBUF:
-	    resObj = Tcl_GetObjResult (dataPtr->interp);
-	    resBuf = (unsigned char*) Tcl_GetByteArrayFromObj(resObj, &resLen);
-	    ResultAdd(&dataPtr->result, resBuf, resLen);
-	    break;
-
-	case TRANSMIT_NUM:
-	    /* Interpret result as integer number */
-	    resObj = Tcl_GetObjResult (dataPtr->interp);
-	    Tcl_GetIntFromObj(dataPtr->interp, resObj, &dataPtr->maxRead);
-	    break;
+    case TRANSMIT_DONT:
+	/* nothing to do */
+	break;
+
+    case TRANSMIT_DOWN:
+	resObj = Tcl_GetObjResult(dataPtr->interp);
+	resBuf = Tcl_GetByteArrayFromObj(resObj, &resLen);
+	Tcl_WriteRaw(Tcl_GetStackedChannel(dataPtr->self), (char *) resBuf,
+		resLen);
+	break;
+
+    case TRANSMIT_SELF:
+	resObj = Tcl_GetObjResult(dataPtr->interp);
+	resBuf = Tcl_GetByteArrayFromObj(resObj, &resLen);
+	Tcl_WriteRaw(dataPtr->self, (char *) resBuf, resLen);
+	break;
+
+    case TRANSMIT_IBUF:
+	resObj = Tcl_GetObjResult(dataPtr->interp);
+	resBuf = Tcl_GetByteArrayFromObj(resObj, &resLen);
+	ResultAdd(&dataPtr->result, resBuf, resLen);
+	break;
+
+    case TRANSMIT_NUM:
+	/*
+	 * Interpret result as integer number.
+	 */
+
+	resObj = Tcl_GetObjResult(dataPtr->interp);
+	TclGetIntFromObj(dataPtr->interp, resObj, &dataPtr->maxRead);
+	break;
     }
 
     Tcl_ResetResult(dataPtr->interp);
-
-    if (preserve) {
-	Tcl_RestoreResult(dataPtr->interp, &ciSave);
+    if (preserve == P_PRESERVE) {
+	(void) Tcl_RestoreInterpState(dataPtr->interp, state);
     }
-
     return res;
 
-    cleanup:
-    if (preserve) {
-	Tcl_RestoreResult(dataPtr->interp, &ciSave);
+  cleanup:
+    if (preserve == P_PRESERVE) {
+	(void) Tcl_RestoreInterpState(dataPtr->interp, state);
     }
-
-    if (command != (Tcl_Obj*) NULL) {
-        Tcl_DecrRefCount(command);
+    if (command != NULL) {
+	Tcl_DecrRefCount(command);
     }
-
     return res;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformBlockModeProc --
+ * TransformBlockModeProc --
  *
- *	Trap handler. Called by the generic IO system
- *	during option processing to change the blocking
- *	mode of the channel.
+ *	Trap handler. Called by the generic IO system during option processing
+ *	to change the blocking mode of the channel.
  *
- *	Sideeffects:
- *		Forwards the request to the underlying
- *		channel.
+ * Side effects:
+ *	Forwards the request to the underlying channel.
  *
- *	Result:
- *		0 if successful, errno when failed.
+ * Result:
+ *	0 if successful, errno when failed.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformBlockModeProc (instanceData, mode)
-    ClientData  instanceData; /* State of transformation */
-    int         mode;         /* New blocking mode */
+TransformBlockModeProc(
+    ClientData instanceData,	/* State of transformation. */
+    int mode)			/* New blocking mode. */
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
+    TransformChannelData *dataPtr = instanceData;
 
     if (mode == TCL_MODE_NONBLOCKING) {
-        dataPtr->flags |= CHANNEL_ASYNC;
+	dataPtr->flags |= CHANNEL_ASYNC;
     } else {
-        dataPtr->flags &= ~(CHANNEL_ASYNC);
+	dataPtr->flags &= ~CHANNEL_ASYNC;
     }
     return 0;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformCloseProc --
+ * TransformCloseProc --
  *
- *	Trap handler. Called by the generic IO system
- *	during destruction of the transformation channel.
+ *	Trap handler. Called by the generic IO system during destruction of
+ *	the transformation channel.
  *
- *	Sideeffects:
- *		Releases the memory allocated in
- *		'Tcl_TransformObjCmd'.
+ * Side effects:
+ *	Releases the memory allocated in 'Tcl_TransformObjCmd'.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformCloseProc (instanceData, interp)
-    ClientData  instanceData;
-    Tcl_Interp* interp;
+TransformCloseProc(
+    ClientData instanceData,
+    Tcl_Interp *interp)
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
-
-    /*
-     * Important: In this procedure 'dataPtr->self' already points to
-     * the underlying channel.
-     */
+    TransformChannelData *dataPtr = instanceData;
 
     /*
+     * Important: In this procedure 'dataPtr->self' already points to the
+     * underlying channel.
+     *
      * There is no need to cancel an existing channel handler, this is already
      * done. Either by 'Tcl_UnstackChannel' or by the general cleanup in
      * 'Tcl_Close'.
@@ -578,81 +523,82 @@ TransformCloseProc (instanceData, interp)
      * removed channel.
      */
 
-    if (dataPtr->timer != (Tcl_TimerToken) NULL) {
-        Tcl_DeleteTimerHandler (dataPtr->timer);
-	dataPtr->timer = (Tcl_TimerToken) NULL;
+    if (dataPtr->timer != NULL) {
+	Tcl_DeleteTimerHandler(dataPtr->timer);
+	dataPtr->timer = NULL;
     }
 
     /*
      * Now flush data waiting in internal buffers to output and input. The
-     * input must be done despite the fact that there is no real receiver
-     * for it anymore. But the scripts might have sideeffects other parts
-     * of the system rely on (f.e. signaling the close to interested parties).
+     * input must be done despite the fact that there is no real receiver for
+     * it anymore. But the scripts might have sideeffects other parts of the
+     * system rely on (f.e. signaling the close to interested parties).
      */
 
     if (dataPtr->mode & TCL_WRITABLE) {
-        ExecuteCallback (dataPtr, interp, A_FLUSH_WRITE,
-		NULL, 0, TRANSMIT_DOWN, 1);
+	ExecuteCallback(dataPtr, interp, A_FLUSH_WRITE, NULL, 0,
+		TRANSMIT_DOWN, P_PRESERVE);
     }
 
     if ((dataPtr->mode & TCL_READABLE) && !dataPtr->readIsFlushed) {
 	dataPtr->readIsFlushed = 1;
-        ExecuteCallback (dataPtr, interp, A_FLUSH_READ,
-		NULL, 0, TRANSMIT_IBUF, 1);
+	ExecuteCallback(dataPtr, interp, A_FLUSH_READ, NULL, 0, TRANSMIT_IBUF,
+		P_PRESERVE);
     }
 
     if (dataPtr->mode & TCL_WRITABLE) {
-        ExecuteCallback (dataPtr, interp, A_DELETE_WRITE,
-		NULL, 0, TRANSMIT_DONT, 1);
+	ExecuteCallback(dataPtr, interp, A_DELETE_WRITE, NULL, 0,
+		TRANSMIT_DONT, P_PRESERVE);
     }
-
     if (dataPtr->mode & TCL_READABLE) {
-        ExecuteCallback (dataPtr, interp, A_DELETE_READ,
-		NULL, 0, TRANSMIT_DONT, 1);
+	ExecuteCallback(dataPtr, interp, A_DELETE_READ, NULL, 0,
+		TRANSMIT_DONT, P_PRESERVE);
     }
 
     /*
-     * General cleanup
+     * General cleanup.
      */
 
     ResultClear(&dataPtr->result);
     Tcl_DecrRefCount(dataPtr->command);
-    ckfree((VOID*) dataPtr);
-
+    ckfree((char *) dataPtr);
     return TCL_OK;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformInputProc --
+ * TransformInputProc --
  *
  *	Called by the generic IO system to convert read data.
  *
- *	Sideeffects:
- *		As defined by the conversion.
+ * Side effects:
+ *	As defined by the conversion.
  *
- *	Result:
- *		A transformed buffer.
+ * Result:
+ *	A transformed buffer.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformInputProc (instanceData, buf, toRead, errorCodePtr)
-    ClientData instanceData;
-    char*      buf;
-    int	       toRead;
-    int*       errorCodePtr;
+TransformInputProc(
+    ClientData instanceData,
+    char *buf,
+    int toRead,
+    int *errorCodePtr)
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
-    int gotBytes, read, res, copied;
+    TransformChannelData *dataPtr = instanceData;
+    int gotBytes, read, copied;
     Tcl_Channel downChan;
 
-    /* should assert (dataPtr->mode & TCL_READABLE) */
+    /*
+     * Should assert(dataPtr->mode & TCL_READABLE);
+     */
 
     if (toRead == 0) {
-	/* Catch a no-op.
+	/*
+	 * Catch a no-op.
 	 */
 	return 0;
     }
@@ -661,113 +607,116 @@ TransformInputProc (instanceData, buf, toRead, errorCodePtr)
     downChan = Tcl_GetStackedChannel(dataPtr->self);
 
     while (toRead > 0) {
-        /*
+	/*
 	 * Loop until the request is satisfied (or no data is available from
 	 * below, possibly EOF).
 	 */
 
-        copied    = ResultCopy (&dataPtr->result, UCHARP (buf), toRead);
-
-	toRead   -= copied;
-	buf      += copied;
+	copied = ResultCopy(&dataPtr->result, UCHARP(buf), toRead);
+	toRead -= copied;
+	buf += copied;
 	gotBytes += copied;
 
 	if (toRead == 0) {
-	    /* The request was completely satisfied from our buffers.
-	     * We can break out of the loop and return to the caller.
+	    /*
+	     * The request was completely satisfied from our buffers. We can
+	     * break out of the loop and return to the caller.
 	     */
+
 	    return gotBytes;
 	}
 
 	/*
-	 * Length (dataPtr->result) == 0, toRead > 0 here . Use the incoming
-	 * 'buf'! as target to store the intermediary information read
-	 * from the underlying channel.
+	 * Length (dataPtr->result) == 0, toRead > 0 here. Use the incoming
+	 * 'buf'! as target to store the intermediary information read from
+	 * the underlying channel.
 	 *
-	 * Ask the tcl level how much data it allows us to read from
-	 * the underlying channel. This feature allows the transform to
-	 * signal EOF upstream although there is none downstream. Useful
-	 * to control an unbounded 'fcopy', either through counting bytes,
-	 * or by pattern matching.
+	 * Ask the tcl level how much data it allows us to read from the
+	 * underlying channel. This feature allows the transform to signal EOF
+	 * upstream although there is none downstream. Useful to control an
+	 * unbounded 'fcopy', either through counting bytes, or by pattern
+	 * matching.
 	 */
 
-	ExecuteCallback (dataPtr, NO_INTERP, A_QUERY_MAXREAD,
-		NULL, 0, TRANSMIT_NUM /* -> maxRead */, 1);
+	ExecuteCallback(dataPtr, NULL, A_QUERY_MAXREAD, NULL, 0,
+		TRANSMIT_NUM /* -> maxRead */, P_PRESERVE);
 
 	if (dataPtr->maxRead >= 0) {
 	    if (dataPtr->maxRead < toRead) {
-	        toRead = dataPtr->maxRead;
+		toRead = dataPtr->maxRead;
 	    }
-	} /* else: 'maxRead < 0' == Accept the current value of toRead */
-
+	} /* else: 'maxRead < 0' == Accept the current value of toRead. */
 	if (toRead <= 0) {
 	    return gotBytes;
 	}
 
-	read = Tcl_ReadRaw(downChan, buf, toRead);
+	/*
+	 * Get bytes from the underlying channel.
+	 */
 
+	read = Tcl_ReadRaw(downChan, buf, toRead);
 	if (read < 0) {
-	    /* Report errors to caller. EAGAIN is a special situation.
-	     * If we had some data before we report that instead of the
-	     * request to re-try.
+	    /*
+	     * Report errors to caller. EAGAIN is a special situation. If we
+	     * had some data before we report that instead of the request to
+	     * re-try.
 	     */
 
 	    if ((Tcl_GetErrno() == EAGAIN) && (gotBytes > 0)) {
-	        return gotBytes;
+		return gotBytes;
 	    }
 
 	    *errorCodePtr = Tcl_GetErrno();
-	    return -1;      
-	}
-
-	if (read == 0) {
+	    return -1;
+	} else if (read == 0) {
 	    /*
-	     * Check wether we hit on EOF in the underlying channel or
-	     * not. If not differentiate between blocking and
-	     * non-blocking modes. In non-blocking mode we ran
-	     * temporarily out of data. Signal this to the caller via
-	     * EWOULDBLOCK and error return (-1). In the other cases
-	     * we simply return what we got and let the caller wait
-	     * for more. On the other hand, if we got an EOF we have
-	     * to convert and flush all waiting partial data.
+	     * Check wether we hit on EOF in the underlying channel or not. If
+	     * not differentiate between blocking and non-blocking modes. In
+	     * non-blocking mode we ran temporarily out of data. Signal this
+	     * to the caller via EWOULDBLOCK and error return (-1). In the
+	     * other cases we simply return what we got and let the caller
+	     * wait for more. On the other hand, if we got an EOF we have to
+	     * convert and flush all waiting partial data.
 	     */
 
-	    if (! Tcl_Eof (downChan)) {
-	        if ((gotBytes == 0) && (dataPtr->flags & CHANNEL_ASYNC)) {
+	    if (!Tcl_Eof(downChan)) {
+		if ((gotBytes == 0) && (dataPtr->flags & CHANNEL_ASYNC)) {
 		    *errorCodePtr = EWOULDBLOCK;
 		    return -1;
-		} else {
-		    return gotBytes;
-		}
-	    } else {
-	        if (dataPtr->readIsFlushed) {
-		    /* Already flushed, nothing to do anymore
-		     */
-		    return gotBytes;
 		}
+		return gotBytes;
+	    }
+
+	    if (dataPtr->readIsFlushed) {
+		/*
+		 * Already flushed, nothing to do anymore.
+		 */
 
-		dataPtr->readIsFlushed = 1;
+		return gotBytes;
+	    }
 
-		ExecuteCallback (dataPtr, NO_INTERP, A_FLUSH_READ,
-			NULL, 0, TRANSMIT_IBUF, P_PRESERVE);
+	    dataPtr->readIsFlushed = 1;
+	    ExecuteCallback(dataPtr, NULL, A_FLUSH_READ, NULL, 0,
+		    TRANSMIT_IBUF, P_PRESERVE);
 
-		if (ResultLength (&dataPtr->result) == 0) {
-		    /* we had nothing to flush */
-		    return gotBytes;
-		}
+	    if (ResultEmpty(&dataPtr->result)) {
+		/*
+		 * We had nothing to flush.
+		 */
 
-		continue; /* at: while (toRead > 0) */
+		return gotBytes;
 	    }
+
+	    continue;		/* at: while (toRead > 0) */
 	} /* read == 0 */
 
-	/* Transform the read chunk and add the result to our
-	 * read buffer (dataPtr->result)
+	/*
+	 * Transform the read chunk and add the result to our read buffer
+	 * (dataPtr->result).
 	 */
 
-	res = ExecuteCallback (dataPtr, NO_INTERP, A_READ,
-		UCHARP (buf), read, TRANSMIT_IBUF, P_PRESERVE);
-
-	if (res != TCL_OK) {
+	if (ExecuteCallback(dataPtr, NULL, A_READ, UCHARP(buf), read,
+		TRANSMIT_IBUF, P_PRESERVE) != TCL_OK) {
 	    *errorCodePtr = EINVAL;
 	    return -1;
 	}
@@ -777,46 +726,45 @@ TransformInputProc (instanceData, buf, toRead, errorCodePtr)
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformOutputProc --
+ * TransformOutputProc --
  *
- *	Called by the generic IO system to convert data
- *	waiting to be written.
+ *	Called by the generic IO system to convert data waiting to be written.
  *
- *	Sideeffects:
- *		As defined by the transformation.
+ * Side effects:
+ *	As defined by the transformation.
  *
- *	Result:
- *		A transformed buffer.
+ * Result:
+ *	A transformed buffer.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformOutputProc (instanceData, buf, toWrite, errorCodePtr)
-    ClientData instanceData;
-    CONST char*      buf;
-    int        toWrite;
-    int*       errorCodePtr;
+TransformOutputProc(
+    ClientData instanceData,
+    const char *buf,
+    int toWrite,
+    int *errorCodePtr)
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
-    int res;
+    TransformChannelData *dataPtr = instanceData;
 
-    /* should assert (dataPtr->mode & TCL_WRITABLE) */
+    /*
+     * Should assert(dataPtr->mode & TCL_WRITABLE);
+     */
 
     if (toWrite == 0) {
-	/* Catch a no-op.
+	/*
+	 * Catch a no-op.
 	 */
+
 	return 0;
     }
 
-    res = ExecuteCallback (dataPtr, NO_INTERP, A_WRITE,
-	    UCHARP (buf), toWrite,
-	    TRANSMIT_DOWN, P_NO_PRESERVE);
-
-    if (res != TCL_OK) {
-        *errorCodePtr = EINVAL;
+    if (ExecuteCallback(dataPtr, NULL, A_WRITE, UCHARP(buf), toWrite,
+	    TRANSMIT_DOWN, P_NO_PRESERVE) != TCL_OK) {
+	*errorCodePtr = EINVAL;
 	return -1;
     }
 
@@ -824,69 +772,67 @@ TransformOutputProc (instanceData, buf, toWrite, errorCodePtr)
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformSeekProc --
+ * TransformSeekProc --
  *
- *	This procedure is called by the generic IO level
- *	to move the access point in a channel.
+ *	This procedure is called by the generic IO level to move the access
+ *	point in a channel.
  *
- *	Sideeffects:
- *		Moves the location at which the channel
- *		will be accessed in future operations.
- *		Flushes all transformation buffers, then
- *		forwards it to the underlying channel.
+ * Side effects:
+ *	Moves the location at which the channel will be accessed in future
+ *	operations. Flushes all transformation buffers, then forwards it to
+ *	the underlying channel.
  *
- *	Result:
- *		-1 if failed, the new position if
- *		successful. An output argument contains
- *		the POSIX error code if an error
- *		occurred, or zero.
+ * Result:
+ *	-1 if failed, the new position if successful. An output argument
+ *	contains the POSIX error code if an error occurred, or zero.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformSeekProc (instanceData, offset, mode, errorCodePtr)
-    ClientData  instanceData;	/* The channel to manipulate */
-    long	offset;		/* Size of movement. */
-    int         mode;		/* How to move */
-    int*        errorCodePtr;	/* Location of error flag. */
+TransformSeekProc(
+    ClientData instanceData,	/* The channel to manipulate. */
+    long offset,		/* Size of movement. */
+    int mode,			/* How to move. */
+    int *errorCodePtr)		/* Location of error flag. */
 {
-    TransformChannelData* dataPtr	= (TransformChannelData*) instanceData;
-    Tcl_Channel           parent        = Tcl_GetStackedChannel(dataPtr->self);
-    Tcl_ChannelType*      parentType	= Tcl_GetChannelType(parent);
-    Tcl_DriverSeekProc*   parentSeekProc = Tcl_ChannelSeekProc(parentType);
+    TransformChannelData *dataPtr = instanceData;
+    Tcl_Channel parent = Tcl_GetStackedChannel(dataPtr->self);
+    Tcl_ChannelType *parentType = Tcl_GetChannelType(parent);
+    Tcl_DriverSeekProc *parentSeekProc = Tcl_ChannelSeekProc(parentType);
 
     if ((offset == 0) && (mode == SEEK_CUR)) {
-        /* This is no seek but a request to tell the caller the current
+	/*
+	 * This is no seek but a request to tell the caller the current
 	 * location. Simply pass the request down.
 	 */
 
-	return (*parentSeekProc) (Tcl_GetChannelInstanceData(parent),
-		offset, mode, errorCodePtr);
+	return parentSeekProc(Tcl_GetChannelInstanceData(parent), offset,
+		mode, errorCodePtr);
     }
 
     /*
-     * It is a real request to change the position. Flush all data waiting
-     * for output and discard everything in the input buffers. Then pass
-     * the request down, unchanged.
+     * It is a real request to change the position. Flush all data waiting for
+     * output and discard everything in the input buffers. Then pass the
+     * request down, unchanged.
      */
 
     if (dataPtr->mode & TCL_WRITABLE) {
-        ExecuteCallback (dataPtr, NO_INTERP, A_FLUSH_WRITE,
-		NULL, 0, TRANSMIT_DOWN, P_NO_PRESERVE);
+	ExecuteCallback(dataPtr, NULL, A_FLUSH_WRITE, NULL, 0, TRANSMIT_DOWN,
+		P_NO_PRESERVE);
     }
 
     if (dataPtr->mode & TCL_READABLE) {
-        ExecuteCallback (dataPtr, NO_INTERP, A_CLEAR_READ,
-		NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE);
+	ExecuteCallback(dataPtr, NULL, A_CLEAR_READ, NULL, 0, TRANSMIT_DONT,
+		P_NO_PRESERVE);
 	ResultClear(&dataPtr->result);
 	dataPtr->readIsFlushed = 0;
     }
 
-    return (*parentSeekProc) (Tcl_GetChannelInstanceData(parent),
-	    offset, mode, errorCodePtr);
+    return parentSeekProc(Tcl_GetChannelInstanceData(parent), offset, mode,
+	    errorCodePtr);
 }
 
 /*
@@ -894,71 +840,64 @@ TransformSeekProc (instanceData, offset, mode, errorCodePtr)
  *
  * TransformWideSeekProc --
  *
- *	This procedure is called by the generic IO level to move the
- *	access point in a channel, with a (potentially) 64-bit offset.
+ *	This procedure is called by the generic IO level to move the access
+ *	point in a channel, with a (potentially) 64-bit offset.
  *
  * Side effects:
- *	Moves the location at which the channel will be accessed in
- *	future operations.  Flushes all transformation buffers, then
- *	forwards it to the underlying channel.
+ *	Moves the location at which the channel will be accessed in future
+ *	operations. Flushes all transformation buffers, then forwards it to
+ *	the underlying channel.
  *
  * Result:
- *	-1 if failed, the new position if successful. An output
- *	argument contains the POSIX error code if an error occurred,
- *	or zero.
+ *	-1 if failed, the new position if successful. An output argument
+ *	contains the POSIX error code if an error occurred, or zero.
  *
  *----------------------------------------------------------------------
  */
 
 static Tcl_WideInt
-TransformWideSeekProc (instanceData, offset, mode, errorCodePtr)
-    ClientData  instanceData;	/* The channel to manipulate */
-    Tcl_WideInt offset;		/* Size of movement. */
-    int         mode;		/* How to move */
-    int*        errorCodePtr;	/* Location of error flag. */
+TransformWideSeekProc(
+    ClientData instanceData,	/* The channel to manipulate. */
+    Tcl_WideInt offset,		/* Size of movement. */
+    int mode,			/* How to move. */
+    int *errorCodePtr)		/* Location of error flag. */
 {
-    TransformChannelData* dataPtr =
-	(TransformChannelData*) instanceData;
-    Tcl_Channel parent =
-	Tcl_GetStackedChannel(dataPtr->self);
-    Tcl_ChannelType* parentType	=
-	Tcl_GetChannelType(parent);
-    Tcl_DriverSeekProc* parentSeekProc =
-	Tcl_ChannelSeekProc(parentType);
-    Tcl_DriverWideSeekProc* parentWideSeekProc =
-	Tcl_ChannelWideSeekProc(parentType);
-    ClientData parentData =
-	Tcl_GetChannelInstanceData(parent);
+    TransformChannelData *dataPtr = instanceData;
+    Tcl_Channel parent = Tcl_GetStackedChannel(dataPtr->self);
+    Tcl_ChannelType *parentType	= Tcl_GetChannelType(parent);
+    Tcl_DriverSeekProc *parentSeekProc = Tcl_ChannelSeekProc(parentType);
+    Tcl_DriverWideSeekProc *parentWideSeekProc =
+	    Tcl_ChannelWideSeekProc(parentType);
+    ClientData parentData = Tcl_GetChannelInstanceData(parent);
 
     if ((offset == Tcl_LongAsWide(0)) && (mode == SEEK_CUR)) {
-        /*
+	/*
 	 * This is no seek but a request to tell the caller the current
 	 * location. Simply pass the request down.
 	 */
 
 	if (parentWideSeekProc != NULL) {
-	    return (*parentWideSeekProc) (parentData, offset, mode,
-		    errorCodePtr);
+	    return parentWideSeekProc(parentData, offset, mode, errorCodePtr);
 	}
 
-	return Tcl_LongAsWide((*parentSeekProc) (parentData, 0, mode,
+	return Tcl_LongAsWide(parentSeekProc(parentData, 0, mode,
 		errorCodePtr));
     }
 
     /*
-     * It is a real request to change the position. Flush all data waiting
-     * for output and discard everything in the input buffers. Then pass
-     * the request down, unchanged.
+     * It is a real request to change the position. Flush all data waiting for
+     * output and discard everything in the input buffers. Then pass the
+     * request down, unchanged.
      */
 
     if (dataPtr->mode & TCL_WRITABLE) {
-        ExecuteCallback (dataPtr, NO_INTERP, A_FLUSH_WRITE,
-		NULL, 0, TRANSMIT_DOWN, P_NO_PRESERVE);
+	ExecuteCallback(dataPtr, NULL, A_FLUSH_WRITE, NULL, 0, TRANSMIT_DOWN,
+		P_NO_PRESERVE);
     }
 
     if (dataPtr->mode & TCL_READABLE) {
-        ExecuteCallback (dataPtr, NO_INTERP, A_CLEAR_READ,
-		NULL, 0, TRANSMIT_DONT, P_NO_PRESERVE);
+	ExecuteCallback(dataPtr, NULL, A_CLEAR_READ, NULL, 0, TRANSMIT_DONT,
+		P_NO_PRESERVE);
 	ResultClear(&dataPtr->result);
 	dataPtr->readIsFlushed = 0;
     }
@@ -966,487 +905,491 @@ TransformWideSeekProc (instanceData, offset, mode, errorCodePtr)
     /*
      * If we have a wide seek capability, we should stick with that.
      */
+
     if (parentWideSeekProc != NULL) {
-	return (*parentWideSeekProc) (parentData, offset, mode, errorCodePtr);
+	return parentWideSeekProc(parentData, offset, mode, errorCodePtr);
     }
 
     /*
-     * We're transferring to narrow seeks at this point; this is a bit
-     * complex because we have to check whether the seek is possible
-     * first (i.e. whether we are losing information in truncating the
-     * bits of the offset.)  Luckily, there's a defined error for what
-     * happens when trying to go out of the representable range.
+     * We're transferring to narrow seeks at this point; this is a bit complex
+     * because we have to check whether the seek is possible first (i.e.
+     * whether we are losing information in truncating the bits of the
+     * offset). Luckily, there's a defined error for what happens when trying
+     * to go out of the representable range.
      */
+
     if (offset<Tcl_LongAsWide(LONG_MIN) || offset>Tcl_LongAsWide(LONG_MAX)) {
 	*errorCodePtr = EOVERFLOW;
 	return Tcl_LongAsWide(-1);
     }
-    return Tcl_LongAsWide((*parentSeekProc) (parentData,
-	    Tcl_WideAsLong(offset), mode, errorCodePtr));
+
+    return Tcl_LongAsWide(parentSeekProc(parentData, Tcl_WideAsLong(offset),
+	    mode, errorCodePtr));
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformSetOptionProc --
+ * TransformSetOptionProc --
  *
- *	Called by generic layer to handle the reconfi-
- *	guration of channel specific options. As this
- *	channel type does not have such, it simply passes
- *	all requests downstream.
+ *	Called by generic layer to handle the reconfiguration of channel
+ *	specific options. As this channel type does not have such, it simply
+ *	passes all requests downstream.
  *
- *	Sideeffects:
- *		As defined by the channel downstream.
+ * Side effects:
+ *	As defined by the channel downstream.
  *
- *	Result:
- *		A standard TCL error code.
+ * Result:
+ *	A standard TCL error code.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformSetOptionProc (instanceData, interp, optionName, value)
-    ClientData instanceData;
-    Tcl_Interp *interp;
-    CONST char *optionName;
-    CONST char *value;
+TransformSetOptionProc(
+    ClientData instanceData,
+    Tcl_Interp *interp,
+    const char *optionName,
+    const char *value)
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
+    TransformChannelData *dataPtr = instanceData;
     Tcl_Channel downChan = Tcl_GetStackedChannel(dataPtr->self);
     Tcl_DriverSetOptionProc *setOptionProc;
 
     setOptionProc = Tcl_ChannelSetOptionProc(Tcl_GetChannelType(downChan));
-    if (setOptionProc != NULL) {
-	return (*setOptionProc)(Tcl_GetChannelInstanceData(downChan),
-		interp, optionName, value);
+    if (setOptionProc == NULL) {
+	return TCL_ERROR;
     }
-    return TCL_ERROR;
+
+    return setOptionProc(Tcl_GetChannelInstanceData(downChan), interp,
+	    optionName, value);
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformGetOptionProc --
+ * TransformGetOptionProc --
  *
- *	Called by generic layer to handle requests for
- *	the values of channel specific options. As this
- *	channel type does not have such, it simply passes
- *	all requests downstream.
+ *	Called by generic layer to handle requests for the values of channel
+ *	specific options. As this channel type does not have such, it simply
+ *	passes all requests downstream.
  *
- *	Sideeffects:
- *		As defined by the channel downstream.
+ * Side effects:
+ *	As defined by the channel downstream.
  *
- *	Result:
- *		A standard TCL error code.
+ * Result:
+ *	A standard TCL error code.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformGetOptionProc (instanceData, interp, optionName, dsPtr)
-    ClientData   instanceData;
-    Tcl_Interp*  interp;
-    CONST char*        optionName;
-    Tcl_DString* dsPtr;
+TransformGetOptionProc(
+    ClientData instanceData,
+    Tcl_Interp *interp,
+    const char *optionName,
+    Tcl_DString *dsPtr)
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
+    TransformChannelData *dataPtr = instanceData;
     Tcl_Channel downChan = Tcl_GetStackedChannel(dataPtr->self);
     Tcl_DriverGetOptionProc *getOptionProc;
 
     getOptionProc = Tcl_ChannelGetOptionProc(Tcl_GetChannelType(downChan));
     if (getOptionProc != NULL) {
-	return (*getOptionProc)(Tcl_GetChannelInstanceData(downChan),
-		interp, optionName, dsPtr);
-    } else if (optionName == (CONST char*) NULL) {
+	return getOptionProc(Tcl_GetChannelInstanceData(downChan), interp,
+		optionName, dsPtr);
+    } else if (optionName == NULL) {
 	/*
 	 * Request is query for all options, this is ok.
 	 */
+
 	return TCL_OK;
     }
+
     /*
-     * Request for a specific option has to fail, we don't have any.
+     * Request for a specific option has to fail, since we don't have any.
      */
+
     return TCL_ERROR;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformWatchProc --
+ * TransformWatchProc --
  *
- *	Initialize the notifier to watch for events from
- *	this channel.
+ *	Initialize the notifier to watch for events from this channel.
  *
- *	Sideeffects:
- *		Sets up the notifier so that a future
- *		event on the channel will be seen by Tcl.
+ * Side effects:
+ *	Sets up the notifier so that a future event on the channel will be
+ *	seen by Tcl.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
+
 	/* ARGSUSED */
 static void
-TransformWatchProc (instanceData, mask)
-    ClientData instanceData;	/* Channel to watch */
-    int        mask;		/* Events of interest */
+TransformWatchProc(
+    ClientData instanceData,	/* Channel to watch. */
+    int mask)			/* Events of interest. */
 {
-    /* The caller expressed interest in events occuring for this
-     * channel. We are forwarding the call to the underlying
-     * channel now.
-     */
+    TransformChannelData *dataPtr = instanceData;
+    Tcl_Channel downChan;
 
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
-    Tcl_Channel     downChan;
+    /*
+     * The caller expressed interest in events occuring for this channel. We
+     * are forwarding the call to the underlying channel now.
+     */
 
     dataPtr->watchMask = mask;
 
-    /* No channel handlers any more. We will be notified automatically
-     * about events on the channel below via a call to our
-     * 'TransformNotifyProc'. But we have to pass the interest down now.
-     * We are allowed to add additional 'interest' to the mask if we want
-     * to. But this transformation has no such interest. It just passes
-     * the request down, unchanged.
+    /*
+     * No channel handlers any more. We will be notified automatically about
+     * events on the channel below via a call to our 'TransformNotifyProc'.
+     * But we have to pass the interest down now. We are allowed to add
+     * additional 'interest' to the mask if we want to. But this
+     * transformation has no such interest. It just passes the request down,
+     * unchanged.
      */
 
     downChan = Tcl_GetStackedChannel(dataPtr->self);
 
-    (Tcl_GetChannelType(downChan))
-	->watchProc(Tcl_GetChannelInstanceData(downChan), mask);
+    Tcl_GetChannelType(downChan)->watchProc(
+	    Tcl_GetChannelInstanceData(downChan), mask);
 
     /*
      * Management of the internal timer.
      */
 
-    if ((dataPtr->timer != (Tcl_TimerToken) NULL) &&
-	    (!(mask & TCL_READABLE) || (ResultLength(&dataPtr->result) == 0))) {
-
-        /* A pending timer exists, but either is there no (more)
-	 * interest in the events it generates or nothing is availablee
-	 * for reading, so remove it.
+    if ((dataPtr->timer != NULL) &&
+	    (!(mask & TCL_READABLE) || ResultEmpty(&dataPtr->result))) {
+	/*
+	 * A pending timer exists, but either is there no (more) interest in
+	 * the events it generates or nothing is available for reading, so
+	 * remove it.
 	 */
 
-        Tcl_DeleteTimerHandler (dataPtr->timer);
-	dataPtr->timer = (Tcl_TimerToken) NULL;
+	Tcl_DeleteTimerHandler(dataPtr->timer);
+	dataPtr->timer = NULL;
     }
 
-    if ((dataPtr->timer == (Tcl_TimerToken) NULL) &&
-	    (mask & TCL_READABLE) && (ResultLength (&dataPtr->result) > 0)) {
-
-        /* There is no pending timer, but there is interest in readable
-	 * events and we actually have data waiting, so generate a timer
-	 * to flush that.
+    if ((dataPtr->timer == NULL) && (mask & TCL_READABLE)
+	    && !ResultEmpty(&dataPtr->result)) {
+	/*
+	 * There is no pending timer, but there is interest in readable events
+	 * and we actually have data waiting, so generate a timer to flush
+	 * that.
 	 */
 
-	dataPtr->timer = Tcl_CreateTimerHandler (FLUSH_DELAY,
-		TransformChannelHandlerTimer, (ClientData) dataPtr);
+	dataPtr->timer = Tcl_CreateTimerHandler(FLUSH_DELAY,
+		TransformChannelHandlerTimer, dataPtr);
     }
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformGetFileHandleProc --
+ * TransformGetFileHandleProc --
  *
- *	Called from Tcl_GetChannelHandle to retrieve
- *	OS specific file handle from inside this channel.
+ *	Called from Tcl_GetChannelHandle to retrieve OS specific file handle
+ *	from inside this channel.
  *
- *	Sideeffects:
- *		None.
+ * Side effects:
+ *	None.
  *
- *	Result:
- *		The appropriate Tcl_File or NULL if not
- *		present. 
+ * Result:
+ *	The appropriate Tcl_File or NULL if not present.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
+
 static int
-TransformGetFileHandleProc (instanceData, direction, handlePtr)
-    ClientData  instanceData;	/* Channel to query */
-    int         direction;	/* Direction of interest */
-    ClientData* handlePtr;	/* Place to store the handle into */
+TransformGetFileHandleProc(
+    ClientData instanceData,	/* Channel to query. */
+    int direction,		/* Direction of interest. */
+    ClientData *handlePtr)	/* Place to store the handle into. */
 {
+    TransformChannelData *dataPtr = instanceData;
+
     /*
-     * Return the handle belonging to parent channel.
-     * IOW, pass the request down and the result up.
+     * Return the handle belonging to parent channel. IOW, pass the request
+     * down and the result up.
      */
 
-    TransformChannelData* dataPtr = (TransformChannelData*) instanceData;
-
     return Tcl_GetChannelHandle(Tcl_GetStackedChannel(dataPtr->self),
 	    direction, handlePtr);
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformNotifyProc --
+ * TransformNotifyProc --
  *
- *	------------------------------------------------*
- *	Handler called by Tcl to inform us of activity
- *	on the underlying channel.
- *	------------------------------------------------*
+ *	Handler called by Tcl to inform us of activity on the underlying
+ *	channel.
  *
- *	Sideeffects:
- *		May process the incoming event by itself.
+ * Side effects:
+ *	May process the incoming event by itself.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static int
-TransformNotifyProc (clientData, mask)
-    ClientData	   clientData; /* The state of the notified transformation */
-    int		   mask;       /* The mask of occuring events */
+TransformNotifyProc(
+    ClientData clientData,	/* The state of the notified
+				 * transformation. */
+    int mask)			/* The mask of occuring events. */
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) clientData;
+    TransformChannelData *dataPtr = clientData;
 
     /*
-     * An event occured in the underlying channel.  This
-     * transformation doesn't process such events thus returns the
-     * incoming mask unchanged.
+     * An event occured in the underlying channel. This transformation doesn't
+     * process such events thus returns the incoming mask unchanged.
      */
 
-    if (dataPtr->timer != (Tcl_TimerToken) NULL) {
+    if (dataPtr->timer != NULL) {
 	/*
-	 * Delete an existing timer. It was not fired, yet we are
-	 * here, so the channel below generated such an event and we
-	 * don't have to. The renewal of the interest after the
-	 * execution of channel handlers will eventually cause us to
-	 * recreate the timer (in TransformWatchProc).
+	 * Delete an existing timer. It was not fired, yet we are here, so the
+	 * channel below generated such an event and we don't have to. The
+	 * renewal of the interest after the execution of channel handlers
+	 * will eventually cause us to recreate the timer (in
+	 * TransformWatchProc).
 	 */
 
-	Tcl_DeleteTimerHandler (dataPtr->timer);
-	dataPtr->timer = (Tcl_TimerToken) NULL;
+	Tcl_DeleteTimerHandler(dataPtr->timer);
+	dataPtr->timer = NULL;
     }
-
     return mask;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	TransformChannelHandlerTimer --
+ * TransformChannelHandlerTimer --
  *
- *	Called by the notifier (-> timer) to flush out
- *	information waiting in the input buffer.
+ *	Called by the notifier (-> timer) to flush out information waiting in
+ *	the input buffer.
  *
- *	Sideeffects:
- *		As of 'Tcl_NotifyChannel'.
+ * Side effects:
+ *	As of 'Tcl_NotifyChannel'.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
 static void
-TransformChannelHandlerTimer (clientData)
-    ClientData clientData; /* Transformation to query */
+TransformChannelHandlerTimer(
+    ClientData clientData)	/* Transformation to query. */
 {
-    TransformChannelData* dataPtr = (TransformChannelData*) clientData;
+    TransformChannelData *dataPtr = clientData;
 
-    dataPtr->timer = (Tcl_TimerToken) NULL;
-
-    if (!(dataPtr->watchMask & TCL_READABLE) ||
-	    (ResultLength (&dataPtr->result) == 0)) {
-	/* The timer fired, but either is there no (more)
-	 * interest in the events it generates or nothing is available
-	 * for reading, so ignore it and don't recreate it.
+    dataPtr->timer = NULL;
+    if (!(dataPtr->watchMask&TCL_READABLE) || ResultEmpty(&dataPtr->result)) {
+	/*
+	 * The timer fired, but either is there no (more) interest in the
+	 * events it generates or nothing is available for reading, so ignore
+	 * it and don't recreate it.
 	 */
 
 	return;
     }
-
     Tcl_NotifyChannel(dataPtr->self, TCL_READABLE);
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	ResultClear --
+ * ResultClear --
  *
  *	Deallocates any memory allocated by 'ResultAdd'.
  *
- *	Sideeffects:
- *		See above.
+ * Side effects:
+ *	See above.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
-static void
-ResultClear (r)
-    ResultBuffer* r; /* Reference to the buffer to clear out */
+static inline void
+ResultClear(
+    ResultBuffer *r)		/* Reference to the buffer to clear out. */
 {
     r->used = 0;
 
     if (r->allocated) {
-        ckfree((char*) r->buf);
-	r->buf       = UCHARP (NULL);
+	ckfree((char *) r->buf);
+	r->buf = NULL;
 	r->allocated = 0;
     }
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	ResultInit --
+ * ResultInit --
  *
- *	Initializes the specified buffer structure. The
- *	structure will contain valid information for an
- *	emtpy buffer.
+ *	Initializes the specified buffer structure. The structure will contain
+ *	valid information for an emtpy buffer.
  *
- *	Sideeffects:
- *		See above.
+ * Side effects:
+ *	See above.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
-static void
-ResultInit (r)
-    ResultBuffer* r; /* Reference to the structure to initialize */
+static inline void
+ResultInit(
+    ResultBuffer *r)		/* Reference to the structure to
+				 * initialize. */
 {
-    r->used      = 0;
+    r->used = 0;
     r->allocated = 0;
-    r->buf       = UCHARP (NULL);
+    r->buf = NULL;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	ResultLength --
+ * ResultEmpty --
  *
- *	Returns the number of bytes stored in the buffer.
+ *	Returns whether the number of bytes stored in the buffer is zero.
  *
- *	Sideeffects:
- *		None.
+ * Side effects:
+ *	None.
  *
- *	Result:
- *		An integer, see above too.
+ * Result:
+ *	A boolean.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
-static int
-ResultLength (r)
-    ResultBuffer* r; /* The structure to query */
+static inline int
+ResultEmpty(
+    ResultBuffer *r)		/* The structure to query. */
 {
-    return r->used;
+    return r->used == 0;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	ResultCopy --
+ * ResultCopy --
  *
- *	Copies the requested number of bytes from the
- *	buffer into the specified array and removes them
- *	from the buffer afterward. Copies less if there
- *	is not enough data in the buffer.
+ *	Copies the requested number of bytes from the buffer into the
+ *	specified array and removes them from the buffer afterward. Copies
+ *	less if there is not enough data in the buffer.
  *
- *	Sideeffects:
- *		See above.
+ * Side effects:
+ *	See above.
  *
- *	Result:
- *		The number of actually copied bytes,
- *		possibly less than 'toRead'.
+ * Result:
+ *	The number of actually copied bytes, possibly less than 'toRead'.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
-static int
-ResultCopy (r, buf, toRead)
-    ResultBuffer*  r;      /* The buffer to read from */
-    unsigned char* buf;    /* The buffer to copy into */
-    int		   toRead; /* Number of requested bytes */
+static inline int
+ResultCopy(
+    ResultBuffer *r,		/* The buffer to read from. */
+    unsigned char *buf,		/* The buffer to copy into. */
+    size_t toRead)		/* Number of requested bytes. */
 {
     if (r->used == 0) {
-        /* Nothing to copy in the case of an empty buffer.
+	/*
+	 * Nothing to copy in the case of an empty buffer.
 	 */
 
-        return 0;
-    }
-
-    if (r->used == toRead) {
-        /* We have just enough. Copy everything to the caller.
+	return 0;
+    } else if (r->used == toRead) {
+	/*
+	 * We have just enough. Copy everything to the caller.
 	 */
 
-        memcpy ((VOID*) buf, (VOID*) r->buf, (size_t) toRead);
+	memcpy(buf, r->buf, toRead);
 	r->used = 0;
-	return toRead;
-    }
-
-    if (r->used > toRead) {
-        /* The internal buffer contains more than requested.
-	 * Copy the requested subset to the caller, and shift
-	 * the remaining bytes down.
+    } else if (r->used > toRead) {
+	/*
+	 * The internal buffer contains more than requested. Copy the
+	 * requested subset to the caller, and shift the remaining bytes down.
 	 */
 
-        memcpy  ((VOID*) buf,    (VOID*) r->buf,            (size_t) toRead);
-	memmove ((VOID*) r->buf, (VOID*) (r->buf + toRead),
-		(size_t) r->used - toRead);
-
+	memcpy(buf, r->buf, toRead);
+	memmove(r->buf, r->buf + toRead, r->used - toRead);
 	r->used -= toRead;
-	return toRead;
-    }
-
-    /* There is not enough in the buffer to satisfy the caller, so
-     * take everything.
-     */
+    } else {
+	/*
+	 * There is not enough in the buffer to satisfy the caller, so take
+	 * everything.
+	 */
 
-    memcpy((VOID*) buf, (VOID*) r->buf, (size_t) r->used);
-    toRead  = r->used;
-    r->used = 0;
+	memcpy(buf, r->buf, r->used);
+	toRead = r->used;
+	r->used = 0;
+    }
     return toRead;
 }
 
 /*
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  *
- *	ResultAdd --
+ * ResultAdd --
  *
- *	Adds the bytes in the specified array to the
- *	buffer, by appending it.
+ *	Adds the bytes in the specified array to the buffer, by appending it.
  *
- *	Sideeffects:
- *		See above.
+ * Side effects:
+ *	See above.
  *
- *	Result:
- *		None.
+ * Result:
+ *	None.
  *
- *------------------------------------------------------*
+ *----------------------------------------------------------------------
  */
 
-static void
-ResultAdd (r, buf, toWrite)
-    ResultBuffer*  r;       /* The buffer to extend */
-    unsigned char* buf;     /* The buffer to read from */
-    int		   toWrite; /* The number of bytes in 'buf' */
+static inline void
+ResultAdd(
+    ResultBuffer *r,		/* The buffer to extend. */
+    unsigned char *buf,		/* The buffer to read from. */
+    size_t toWrite)		/* The number of bytes in 'buf'. */
 {
-    if ((r->used + toWrite) > r->allocated) {
-        /* Extension of the internal buffer is required.
+    if (r->used + toWrite > r->allocated) {
+	/*
+	 * Extension of the internal buffer is required.
 	 */
 
-        if (r->allocated == 0) {
+	if (r->allocated == 0) {
 	    r->allocated = toWrite + INCREMENT;
-	    r->buf       = UCHARP (ckalloc((unsigned) r->allocated));
+	    r->buf = UCHARP(ckalloc(r->allocated));
 	} else {
 	    r->allocated += toWrite + INCREMENT;
-	    r->buf        = UCHARP (ckrealloc((char*) r->buf,
-		    (unsigned) r->allocated));
+	    r->buf = UCHARP(ckrealloc((char *) r->buf, r->allocated));
 	}
     }
 
-    /* now copy data */
-    memcpy(r->buf + r->used, buf, (size_t) toWrite);
+    /*
+     * Now we may copy the data.
+     */
+
+    memcpy(r->buf + r->used, buf, toWrite);
     r->used += toWrite;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclIORChan.c b/generic/tclIORChan.c
new file mode 100644
index 0000000..ca3ab4b
--- /dev/null
+++ b/generic/tclIORChan.c
@@ -0,0 +1,3187 @@
+/*
+ * tclIORChan.c --
+ *
+ *	This file contains the implementation of Tcl's generic channel
+ *	reflection code, which allows the implementation of Tcl channels in
+ *	Tcl code.
+ *
+ *	Parts of this file are based on code contributed by Jean-Claude
+ *	Wippler.
+ *
+ *	See TIP #219 for the specification of this functionality.
+ *
+ * Copyright (c) 2004-2005 ActiveState, a divison of Sophos
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include <tclInt.h>
+#include <tclIO.h>
+#include <assert.h>
+
+#ifndef EINVAL
+#define EINVAL	9
+#endif
+#ifndef EOK
+#define EOK	0
+#endif
+
+/*
+ * Signatures of all functions used in the C layer of the reflection.
+ */
+
+static int		ReflectClose(ClientData clientData,
+			    Tcl_Interp *interp);
+static int		ReflectInput(ClientData clientData, char *buf,
+			    int toRead, int *errorCodePtr);
+static int		ReflectOutput(ClientData clientData, const char *buf,
+			    int toWrite, int *errorCodePtr);
+static void		ReflectWatch(ClientData clientData, int mask);
+static int		ReflectBlock(ClientData clientData, int mode);
+static Tcl_WideInt	ReflectSeekWide(ClientData clientData,
+			    Tcl_WideInt offset, int mode, int *errorCodePtr);
+static int		ReflectSeek(ClientData clientData, long offset,
+			    int mode, int *errorCodePtr);
+static int		ReflectGetOption(ClientData clientData,
+			    Tcl_Interp *interp, const char *optionName,
+			    Tcl_DString *dsPtr);
+static int		ReflectSetOption(ClientData clientData,
+			    Tcl_Interp *interp, const char *optionName,
+			    const char *newValue);
+
+/*
+ * The C layer channel type/driver definition used by the reflection. This is
+ * a version 3 structure.
+ */
+
+static Tcl_ChannelType tclRChannelType = {
+    "tclrchannel",         /* Type name.                                  */
+    TCL_CHANNEL_VERSION_5, /* v5 channel */
+    ReflectClose,          /* Close channel, clean instance data          */
+    ReflectInput,          /* Handle read request                         */
+    ReflectOutput,         /* Handle write request                        */
+    ReflectSeek,           /* Move location of access point.   NULL'able  */
+    ReflectSetOption,      /* Set options.                     NULL'able  */
+    ReflectGetOption,      /* Get options.                     NULL'able  */
+    ReflectWatch,          /* Initialize notifier                         */
+    NULL,                  /* Get OS handle from the channel.  NULL'able  */
+    NULL,                  /* No close2 support.               NULL'able  */
+    ReflectBlock,          /* Set blocking/nonblocking.        NULL'able  */
+    NULL,                  /* Flush channel. Not used by core. NULL'able  */
+    NULL,                  /* Handle events.                   NULL'able  */
+    ReflectSeekWide,       /* Move access point (64 bit).      NULL'able  */
+    NULL,                  /* thread action */
+    NULL,                  /* truncate */
+};
+
+/*
+ * Instance data for a reflected channel. ===========================
+ */
+
+typedef struct {
+    Tcl_Channel chan;		/* Back reference to generic channel
+				 * structure. */
+    Tcl_Interp *interp;		/* Reference to the interpreter containing the
+				 * Tcl level part of the channel. NULL here
+				 * signals the channel is dead because the
+				 * interpreter/thread containing its Tcl
+				 * command is gone.
+				 */
+#ifdef TCL_THREADS
+    Tcl_ThreadId thread;	/* Thread the 'interp' belongs to. */
+#endif
+
+    /* See [==] as well.
+     * Storage for the command prefix and the additional words required for
+     * the invocation of methods in the command handler.
+     *
+     * argv [0] ... [.] | [argc-2] [argc-1] | [argc]  [argc+2]
+     *      cmd ... pfx | method   chan     | detail1 detail2
+     *      ~~~~ CT ~~~            ~~ CT ~~
+     *
+     * CT = Belongs to the 'Command handler Thread'.
+     */
+
+    int argc;			/* Number of preallocated words - 2 */
+    Tcl_Obj **argv;		/* Preallocated array for calling the handler.
+				 * args[0] is placeholder for cmd word.
+				 * Followed by the arguments in the prefix,
+				 * plus 4 placeholders for method, channel,
+				 * and at most two varying (method specific)
+				 * words. */
+    int methods;		/* Bitmask of supported methods */
+
+    /*
+     * NOTE (9): Should we have predefined shared literals for the method
+     * names?
+     */
+
+    int mode;			/* Mask of R/W mode */
+    int interest;		/* Mask of events the channel is interested
+				 * in. */
+
+    /*
+     * Note regarding the usage of timers.
+     *
+     * Most channel implementations need a timer in the C level to ensure that
+     * data in buffers is flushed out through the generation of fake file
+     * events.
+     *
+     * See 'rechan', 'memchan', etc.
+     *
+     * Here this is _not_ required. Interest in events is posted to the Tcl
+     * level via 'watch'. And posting of events is possible from the Tcl level
+     * as well, via 'chan postevent'. This means that the generation of all
+     * events, fake or not, timer based or not, is completely in the hands of
+     * the Tcl level. Therefore no timer here.
+     */
+} ReflectedChannel;
+
+/*
+ * Structure of the table maping from channel handles to reflected
+ * channels. Each interpreter which has the handler command for one or more
+ * reflected channels records them in such a table, so that 'chan postevent'
+ * is able to find them even if the actual channel was moved to a different
+ * interpreter and/or thread.
+ *
+ * The table is reachable via the standard interpreter AssocData, the key is
+ * defined below.
+ */
+
+typedef struct {
+    Tcl_HashTable map;
+} ReflectedChannelMap;
+
+#define RCMKEY "ReflectedChannelMap"
+
+/*
+ * Event literals. ==================================================
+ */
+
+static const char *eventOptions[] = {
+    "read", "write", NULL
+};
+typedef enum {
+    EVENT_READ, EVENT_WRITE
+} EventOption;
+
+/*
+ * Method literals. ==================================================
+ */
+
+static const char *methodNames[] = {
+    "blocking",		/* OPT */
+    "cget",		/* OPT \/ Together or none */
+    "cgetall",		/* OPT /\ of these two     */
+    "configure",	/* OPT */
+    "finalize",		/*     */
+    "initialize",	/*     */
+    "read",		/* OPT */
+    "seek",		/* OPT */
+    "watch",		/*     */
+    "write",		/* OPT */
+    NULL
+};
+typedef enum {
+    METH_BLOCKING,
+    METH_CGET,
+    METH_CGETALL,
+    METH_CONFIGURE,
+    METH_FINAL,
+    METH_INIT,
+    METH_READ,
+    METH_SEEK,
+    METH_WATCH,
+    METH_WRITE
+} MethodName;
+
+#define FLAG(m) (1 << (m))
+#define REQUIRED_METHODS \
+	(FLAG(METH_INIT) | FLAG(METH_FINAL) | FLAG(METH_WATCH))
+#define NULLABLE_METHODS \
+	(FLAG(METH_BLOCKING) | FLAG(METH_SEEK) | \
+	FLAG(METH_CONFIGURE) | FLAG(METH_CGET) | FLAG(METH_CGETALL))
+
+#define RANDW \
+	(TCL_READABLE | TCL_WRITABLE)
+
+#define IMPLIES(a,b)	((!(a)) || (b))
+#define NEGIMPL(a,b)
+#define HAS(x,f)	(x & FLAG(f))
+
+#ifdef TCL_THREADS
+/*
+ * Thread specific types and structures.
+ *
+ * We are here essentially creating a very specific implementation of 'thread
+ * send'.
+ */
+
+/*
+ * Enumeration of all operations which can be forwarded.
+ */
+
+typedef enum {
+    ForwardedClose,
+    ForwardedInput,
+    ForwardedOutput,
+    ForwardedSeek,
+    ForwardedWatch,
+    ForwardedBlock,
+    ForwardedSetOpt,
+    ForwardedGetOpt,
+    ForwardedGetOptAll
+} ForwardedOperation;
+
+/*
+ * Event used to forward driver invocations to the thread actually managing
+ * the channel. We cannot construct the command to execute and forward that.
+ * Because then it will contain a mixture of Tcl_Obj's belonging to both the
+ * command handler thread (CT), and the thread managing the channel (MT),
+ * executed in CT. Tcl_Obj's are not allowed to cross thread boundaries. So we
+ * forward an operation code, the argument details, and reference to results.
+ * The command is assembled in the CT and belongs fully to that thread. No
+ * sharing problems.
+ */
+
+typedef struct ForwardParamBase {
+    int code;			/* O: Ok/Fail of the cmd handler */
+    char *msgStr;		/* O: Error message for handler failure */
+    int mustFree;		/* O: True if msgStr is allocated, false if
+				 * otherwise (static). */
+} ForwardParamBase;
+
+/*
+ * Operation specific parameter/result structures. (These are "subtypes" of
+ * ForwardParamBase. Where an operation does not need any special types, it
+ * has no "subtype" and just uses ForwardParamBase, as listed above.)
+ */
+
+struct ForwardParamInput {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    char *buf;			/* O: Where to store the read bytes */
+    int toRead;			/* I: #bytes to read,
+				 * O: #bytes actually read */
+};
+struct ForwardParamOutput {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    const char *buf;		/* I: Where the bytes to write come from */
+    int toWrite;		/* I: #bytes to write,
+				 * O: #bytes actually written */
+};
+struct ForwardParamSeek {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    int seekMode;		/* I: How to seek */
+    Tcl_WideInt offset;		/* I: Where to seek,
+				 * O: New location */
+};
+struct ForwardParamWatch {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    int mask;			/* I: What events to watch for */
+};
+struct ForwardParamBlock {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    int nonblocking;		/* I: What mode to activate */
+};
+struct ForwardParamSetOpt {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    const char *name;		/* Name of option to set */
+    const char *value;		/* Value to set */
+};
+struct ForwardParamGetOpt {
+    ForwardParamBase base;	/* "Supertype". MUST COME FIRST. */
+    const char *name;		/* Name of option to get, maybe NULL */
+    Tcl_DString *value;		/* Result */
+};
+
+/*
+ * Now join all these together in a single union for convenience.
+ */
+
+typedef union ForwardParam {
+    ForwardParamBase base;
+    struct ForwardParamInput input;
+    struct ForwardParamOutput output;
+    struct ForwardParamSeek seek;
+    struct ForwardParamWatch watch;
+    struct ForwardParamBlock block;
+    struct ForwardParamSetOpt setOpt;
+    struct ForwardParamGetOpt getOpt;
+} ForwardParam;
+
+/*
+ * Forward declaration.
+ */
+
+typedef struct ForwardingResult ForwardingResult;
+
+/*
+ * General event structure, with reference to operation specific data.
+ */
+
+typedef struct ForwardingEvent {
+    Tcl_Event event;		/* Basic event data, has to be first item */
+    ForwardingResult *resultPtr;
+    ForwardedOperation op;	/* Forwarded driver operation */
+    ReflectedChannel *rcPtr;	/* Channel instance */
+    ForwardParam *param;	/* Packaged arguments and return values, a
+				 * ForwardParam pointer. */
+} ForwardingEvent;
+
+/*
+ * Structure to manage the result of the forwarding. This is not the result of
+ * the operation itself, but about the success of the forward event itself.
+ * The event can be successful, even if the operation which was forwarded
+ * failed. It is also there to manage the synchronization between the involved
+ * threads.
+ */
+
+struct ForwardingResult {
+    Tcl_ThreadId src;		/* Originating thread. */
+    Tcl_ThreadId dst;		/* Thread the op was forwarded to. */
+    Tcl_Interp*  dsti;          /* Interpreter in the thread the op was forwarded to. */
+    /*
+     * Note regarding 'dsti' above: Its information is also available via the
+     * chain evPtr->rcPtr->interp, however, as can be seen, two more
+     * indirections are needed to retrieve it. And the evPtr may be gone,
+     * breaking the chain.
+     */
+    Tcl_Condition done;		/* Condition variable the forwarder blocks
+				 * on. */
+    int result;			/* TCL_OK or TCL_ERROR */
+    ForwardingEvent *evPtr;	/* Event the result belongs to. */
+    ForwardingResult *prevPtr, *nextPtr;
+				/* Links into the list of pending forwarded
+				 * results. */
+};
+
+typedef struct ThreadSpecificData {
+    /*
+     * Table of all reflected channels owned by this thread. This is the
+     * per-thread version of the per-interpreter map.
+     */
+
+    ReflectedChannelMap* rcmPtr;
+} ThreadSpecificData;
+
+static Tcl_ThreadDataKey dataKey;
+
+/*
+ * List of forwarded operations which have not completed yet, plus the mutex
+ * to protect the access to this process global list.
+ */
+
+static ForwardingResult *forwardList = NULL;
+TCL_DECLARE_MUTEX(rcForwardMutex)
+
+/*
+ * Function containing the generic code executing a forward, and wrapper
+ * macros for the actual operations we wish to forward. Uses ForwardProc as
+ * the event function executed by the thread receiving a forwarding event
+ * (which executes the appropriate function and collects the result, if any).
+ *
+ * The ExitProc ensures that things do not deadlock when the sending thread
+ * involved in the forwarding exits. It also clean things up so that we don't
+ * leak resources when threads go away.
+ */
+
+static void		ForwardOpToOwnerThread(ReflectedChannel *rcPtr,
+			    ForwardedOperation op, const VOID *param);
+static int		ForwardProc(Tcl_Event *evPtr, int mask);
+static void		SrcExitProc(ClientData clientData);
+
+#define FreeReceivedError(p) \
+	if ((p)->base.mustFree) { \
+	    ckfree((p)->base.msgStr); \
+	}
+#define PassReceivedErrorInterp(i,p) \
+	if ((i) != NULL) { \
+	    Tcl_SetChannelErrorInterp((i), \
+		    Tcl_NewStringObj((p)->base.msgStr, -1)); \
+	} \
+	FreeReceivedError(p)
+#define PassReceivedError(c,p) \
+	Tcl_SetChannelError((c), Tcl_NewStringObj((p)->base.msgStr, -1)); \
+	FreeReceivedError(p)
+#define ForwardSetStaticError(p,emsg) \
+	(p)->base.code = TCL_ERROR; \
+	(p)->base.mustFree = 0; \
+	(p)->base.msgStr = (char *) (emsg)
+#define ForwardSetDynamicError(p,emsg) \
+	(p)->base.code = TCL_ERROR; \
+	(p)->base.mustFree = 1; \
+	(p)->base.msgStr = (char *) (emsg)
+
+static void		ForwardSetObjError(ForwardParam *p, Tcl_Obj *objPtr);
+
+static ReflectedChannelMap *	GetThreadReflectedChannelMap(void);
+static void		DeleteThreadReflectedChannelMap(ClientData clientData);
+
+#endif /* TCL_THREADS */
+
+#define SetChannelErrorStr(c,msgStr) \
+	Tcl_SetChannelError((c), Tcl_NewStringObj((msgStr), -1))
+
+static Tcl_Obj *	MarshallError(Tcl_Interp *interp);
+static void		UnmarshallErrorResult(Tcl_Interp *interp,
+			    Tcl_Obj *msgObj);
+
+/*
+ * Static functions for this file:
+ */
+
+static int		EncodeEventMask(Tcl_Interp *interp,
+			    const char *objName, Tcl_Obj *obj, int *mask);
+static Tcl_Obj *	DecodeEventMask(int mask);
+static ReflectedChannel * NewReflectedChannel(Tcl_Interp *interp,
+			    Tcl_Obj *cmdpfxObj, int mode, Tcl_Obj *handleObj);
+static Tcl_Obj *	NextHandle(void);
+static void		FreeReflectedChannel(ReflectedChannel *rcPtr);
+static int		InvokeTclMethod(ReflectedChannel *rcPtr,
+			    const char *method, Tcl_Obj *argOneObj,
+			    Tcl_Obj *argTwoObj, Tcl_Obj **resultObjPtr);
+
+static ReflectedChannelMap *	GetReflectedChannelMap(Tcl_Interp *interp);
+static void		DeleteReflectedChannelMap(ClientData clientData,
+			    Tcl_Interp *interp);
+static int              ErrnoReturn(ReflectedChannel *rcPtr, Tcl_Obj* resObj);
+
+/*
+ * Global constant strings (messages). ==================
+ * These string are used directly as bypass errors, thus they have to be valid
+ * Tcl lists where the last element is the message itself. Hence the
+ * list-quoting to keep the words of the message together. See also [x].
+ */
+
+static const char *msg_read_unsup = "{read not supported by Tcl driver}";
+static const char *msg_read_toomuch = "{read delivered more than requested}";
+static const char *msg_write_unsup = "{write not supported by Tcl driver}";
+static const char *msg_write_toomuch = "{write wrote more than requested}";
+static const char *msg_write_nothing = "{write wrote nothing}";
+static const char *msg_seek_beforestart = "{Tried to seek before origin}";
+#ifdef TCL_THREADS
+static const char *msg_send_originlost = "{Channel thread lost}";
+static const char *msg_send_dstlost    = "{Owner lost}";
+#endif /* TCL_THREADS */
+static const char *msg_dstlost    = "-code 1 -level 0 -errorcode NONE -errorinfo {} -errorline 1 {Owner lost}";
+
+/*
+ * Main methods to plug into the 'chan' ensemble'. ==================
+ */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclChanCreateObjCmd --
+ *
+ *	This function is invoked to process the "chan create" Tcl command.
+ *	See the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result. The handle of the new channel is placed in the
+ *	interp result.
+ *
+ * Side effects:
+ *	Creates a new channel.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclChanCreateObjCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    ReflectedChannel *rcPtr;	/* Instance data of the new channel */
+    Tcl_Obj *rcId;		/* Handle of the new channel */
+    int mode;			/* R/W mode of new channel. Has to match
+				 * abilities of handler commands */
+    Tcl_Obj *cmdObj;		/* Command prefix, list of words */
+    Tcl_Obj *cmdNameObj;	/* Command name */
+    Tcl_Channel chan;		/* Token for the new channel */
+    Tcl_Obj *modeObj;		/* mode in obj form for method call */
+    int listc;			/* Result of 'initialize', and of */
+    Tcl_Obj **listv;		/* its sublist in the 2nd element */
+    int methIndex;		/* Encoded method name */
+    int result;			/* Result code for 'initialize' */
+    Tcl_Obj *resObj;		/* Result data for 'initialize' */
+    int methods;		/* Bitmask for supported methods. */
+    Channel *chanPtr;		/* 'chan' resolved to internal struct. */
+    Tcl_Obj *err;		/* Error message */
+    ReflectedChannelMap* rcmPtr; /* Map of reflected channels with handlers in this interp */
+    Tcl_HashEntry* hPtr;         /* Entry in the above map */
+    int isNew;                   /* Placeholder. */
+
+    /*
+     * Syntax:   chan create MODE CMDPREFIX
+     *           [0]  [1]    [2]  [3]
+     *
+     * Actually: rCreate MODE CMDPREFIX
+     *           [0]     [1]  [2]
+     */
+
+#define MODE	(1)
+#define CMD	(2)
+
+    /*
+     * Number of arguments...
+     */
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "mode cmdprefix");
+	return TCL_ERROR;
+    }
+
+    /*
+     * First argument is a list of modes. Allowed entries are "read", "write".
+     * Expect at least one list element. Abbreviations are ok.
+     */
+
+    modeObj = objv[MODE];
+    if (EncodeEventMask(interp, "mode", objv[MODE], &mode) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Second argument is command prefix, i.e. list of words, first word is
+     * name of handler command, other words are fixed arguments. Run the
+     * 'initialize' method to get the list of supported methods. Validate
+     * this.
+     */
+
+    cmdObj = objv[CMD];
+
+    /*
+     * Basic check that the command prefix truly is a list.
+     */
+
+    if (Tcl_ListObjIndex(interp, cmdObj, 0, &cmdNameObj) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Now create the channel.
+     */
+
+    rcId = NextHandle();
+    rcPtr = NewReflectedChannel(interp, cmdObj, mode, rcId);
+    chan = Tcl_CreateChannel(&tclRChannelType, TclGetString(rcId), rcPtr,
+	    mode);
+    rcPtr->chan = chan;
+    chanPtr = (Channel *) chan;
+
+    /*
+     * Invoke 'initialize' and validate that the handler is present and ok.
+     * Squash the channel if not.
+     *
+     * Note: The conversion of 'mode' back into a Tcl_Obj ensures that
+     * 'initialize' is invoked with canonical mode names, and no
+     * abbreviations. Using modeObj directly could feed abbreviations into the
+     * handler, and the handler is not specified to handle such.
+     */
+
+    modeObj = DecodeEventMask(mode);
+    /* assert modeObj.refCount == 1 */
+    result = InvokeTclMethod(rcPtr, "initialize", modeObj, NULL, &resObj);
+    Tcl_DecrRefCount(modeObj);
+    if (result != TCL_OK) {
+	UnmarshallErrorResult(interp, resObj);
+	Tcl_DecrRefCount(resObj);	/* Remove reference held from invoke */
+	goto error;
+    }
+
+    /*
+     * Verify the result.
+     * - List, of method names. Convert to mask.
+     *   Check for non-optionals through the mask.
+     *   Compare open mode against optional r/w.
+     */
+
+    if (Tcl_ListObjGetElements(NULL, resObj, &listc, &listv) != TCL_OK) {
+	TclNewLiteralStringObj(err, "chan handler \"");
+	Tcl_AppendObjToObj(err, cmdObj);
+	Tcl_AppendToObj(err, " initialize\" returned non-list: ", -1);
+	Tcl_AppendObjToObj(err, resObj);
+	Tcl_SetObjResult(interp, err);
+	Tcl_DecrRefCount(resObj);
+	goto error;
+    }
+
+    methods = 0;
+    while (listc > 0) {
+	if (Tcl_GetIndexFromObj(interp, listv[listc-1], methodNames,
+		"method", TCL_EXACT, &methIndex) != TCL_OK) {
+	    TclNewLiteralStringObj(err, "chan handler \"");
+	    Tcl_AppendObjToObj(err, cmdObj);
+	    Tcl_AppendToObj(err, " initialize\" returned ", -1);
+	    Tcl_AppendObjToObj(err, Tcl_GetObjResult(interp));
+	    Tcl_SetObjResult(interp, err);
+	    Tcl_DecrRefCount(resObj);
+	    goto error;
+	}
+
+	methods |= FLAG(methIndex);
+	listc--;
+    }
+    Tcl_DecrRefCount(resObj);
+
+    if ((REQUIRED_METHODS & methods) != REQUIRED_METHODS) {
+	TclNewLiteralStringObj(err, "chan handler \"");
+	Tcl_AppendObjToObj(err, cmdObj);
+	Tcl_AppendToObj(err, "\" does not support all required methods", -1);
+	Tcl_SetObjResult(interp, err);
+	goto error;
+    }
+
+    if ((mode & TCL_READABLE) && !HAS(methods, METH_READ)) {
+	TclNewLiteralStringObj(err, "chan handler \"");
+	Tcl_AppendObjToObj(err, cmdObj);
+	Tcl_AppendToObj(err, "\" lacks a \"read\" method", -1);
+	Tcl_SetObjResult(interp, err);
+	goto error;
+    }
+
+    if ((mode & TCL_WRITABLE) && !HAS(methods, METH_WRITE)) {
+	TclNewLiteralStringObj(err, "chan handler \"");
+	Tcl_AppendObjToObj(err, cmdObj);
+	Tcl_AppendToObj(err, "\" lacks a \"write\" method", -1);
+	Tcl_SetObjResult(interp, err);
+	goto error;
+    }
+
+    if (!IMPLIES(HAS(methods, METH_CGET), HAS(methods, METH_CGETALL))) {
+	TclNewLiteralStringObj(err, "chan handler \"");
+	Tcl_AppendObjToObj(err, cmdObj);
+	Tcl_AppendToObj(err, "\" supports \"cget\" but not \"cgetall\"", -1);
+	Tcl_SetObjResult(interp, err);
+	goto error;
+    }
+
+    if (!IMPLIES(HAS(methods, METH_CGETALL), HAS(methods, METH_CGET))) {
+	TclNewLiteralStringObj(err, "chan handler \"");
+	Tcl_AppendObjToObj(err, cmdObj);
+	Tcl_AppendToObj(err, "\" supports \"cgetall\" but not \"cget\"", -1);
+	Tcl_SetObjResult(interp, err);
+	goto error;
+    }
+
+    Tcl_ResetResult(interp);
+
+    /*
+     * Everything is fine now.
+     */
+
+    rcPtr->methods = methods;
+
+    if ((methods & NULLABLE_METHODS) != NULLABLE_METHODS) {
+	/*
+	 * Some of the nullable methods are not supported. We clone the
+	 * channel type, null the associated C functions, and use the result
+	 * as the actual channel type.
+	 */
+
+	Tcl_ChannelType *clonePtr = (Tcl_ChannelType *)
+		ckalloc(sizeof(Tcl_ChannelType));
+
+	memcpy(clonePtr, &tclRChannelType, sizeof(Tcl_ChannelType));
+
+	if (!(methods & FLAG(METH_CONFIGURE))) {
+	    clonePtr->setOptionProc = NULL;
+	}
+
+	if (!(methods & FLAG(METH_CGET)) && !(methods & FLAG(METH_CGETALL))) {
+	    clonePtr->getOptionProc = NULL;
+	}
+	if (!(methods & FLAG(METH_BLOCKING))) {
+	    clonePtr->blockModeProc = NULL;
+	}
+	if (!(methods & FLAG(METH_SEEK))) {
+	    clonePtr->seekProc = NULL;
+	    clonePtr->wideSeekProc = NULL;
+	}
+
+	chanPtr->typePtr = clonePtr;
+    }
+
+    /*
+     * Register the channel in the I/O system, and in our our map for 'chan
+     * postevent'.
+     */
+
+    Tcl_RegisterChannel(interp, chan);
+
+    rcmPtr = GetReflectedChannelMap (interp);
+    hPtr   = Tcl_CreateHashEntry(&rcmPtr->map,
+				 chanPtr->state->channelName, &isNew);
+    if (!isNew) {
+	if (chanPtr != Tcl_GetHashValue(hPtr)) {
+	    Tcl_Panic("TclChanCreateObjCmd: duplicate channel names");
+	}
+    }
+    Tcl_SetHashValue(hPtr, chan);
+#ifdef TCL_THREADS
+    rcmPtr = GetThreadReflectedChannelMap();
+    hPtr   = Tcl_CreateHashEntry(&rcmPtr->map,
+				 chanPtr->state->channelName, &isNew);
+    Tcl_SetHashValue(hPtr, chan);
+#endif
+
+    /*
+     * Return handle as result of command.
+     */
+
+    Tcl_SetObjResult(interp, rcId);
+    return TCL_OK;
+
+ error:
+    /*
+     * Signal to ReflectClose to not call 'finalize'.
+     */
+
+    rcPtr->methods = 0;
+    Tcl_Close(interp, chan);
+    return TCL_ERROR;
+
+#undef MODE
+#undef CMD
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclChanPostEventObjCmd --
+ *
+ *	This function is invoked to process the "chan postevent" Tcl command.
+ *	See the user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Posts events to a reflected channel, invokes event handlers. The
+ *	latter implies that arbitrary side effects are possible.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclChanPostEventObjCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    /*
+     * Syntax:   chan postevent CHANNEL EVENTSPEC
+     *           [0]  [1]       [2]     [3]
+     *
+     * Actually: rPostevent CHANNEL EVENTSPEC
+     *           [0]        [1]     [2]
+     *
+     * where EVENTSPEC = {read write ...} (Abbreviations allowed as well).
+     */
+
+#define CHAN	(1)
+#define EVENT	(2)
+
+    const char *chanId;		/* Tcl level channel handle */
+    Tcl_Channel chan;		/* Channel associated to the handle */
+    const Tcl_ChannelType *chanTypePtr;
+				/* Its associated driver structure */
+    ReflectedChannel *rcPtr;	/* Associated instance data */
+    int events;			/* Mask of events to post */
+    ReflectedChannelMap* rcmPtr; /* Map of reflected channels with handlers in this interp */
+    Tcl_HashEntry* hPtr;         /* Entry in the above map */
+
+    /*
+     * Number of arguments...
+     */
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "channel eventspec");
+	return TCL_ERROR;
+    }
+
+    /*
+     * First argument is a channel, a reflected channel, and the call of this
+     * command is done from the interp defining the channel handler cmd.
+     */
+
+    chanId = TclGetString(objv[CHAN]);
+
+    rcmPtr = GetReflectedChannelMap (interp);
+    hPtr = Tcl_FindHashEntry (&rcmPtr->map, chanId);
+
+    if (hPtr == NULL) {
+	Tcl_AppendResult(interp, "can not find reflected channel named \"", chanId,
+		"\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "CHANNEL", chanId, NULL);
+	return TCL_ERROR;
+    }
+
+    /*
+     * Note that the search above subsumes several of the older checks, namely:
+     *
+     * (1) Does the channel handle refer to a reflected channel ?
+     * (2) Is the post event issued from the interpreter holding the handler
+     *     of the reflected channel ?
+     *
+     * A successful search answers yes to both. Because the map holds only
+     * handles of reflected channels, and only of such whose handler is
+     * defined in this interpreter.
+     *
+     * We keep the old checks for both, for paranioa, but abort now instead of
+     * throwing errors, as failure now means that our internal datastructures
+     * have gone seriously haywire.
+     */
+
+    chan        = Tcl_GetHashValue(hPtr);
+    chanTypePtr = Tcl_GetChannelType(chan);
+
+    /*
+     * We use a function referenced by the channel type as our cookie to
+     * detect calls to non-reflecting channels. The channel type itself is not
+     * suitable, as it might not be the static definition in this file, but a
+     * clone thereof. And while we have reserved the name of the type nothing
+     * in the core checks against violation, so someone else might have
+     * created a channel type using our name, clashing with ourselves.
+     */
+
+    if (chanTypePtr->watchProc != &ReflectWatch) {
+	Tcl_Panic ("TclChanPostEventObjCmd: channel is not a reflected channel");
+    }
+
+    rcPtr = (ReflectedChannel *) Tcl_GetChannelInstanceData(chan);
+
+    if (rcPtr->interp != interp) {
+	Tcl_Panic ("TclChanPostEventObjCmd: postevent accepted for call from outside interpreter");
+    }
+
+    /*
+     * Second argument is a list of events. Allowed entries are "read",
+     * "write". Expect at least one list element. Abbreviations are ok.
+     */
+
+    if (EncodeEventMask(interp, "event", objv[EVENT], &events) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Check that the channel is actually interested in the provided events.
+     */
+
+    if (events & ~rcPtr->interest) {
+	Tcl_AppendResult(interp, "tried to post events channel \"", chanId,
+		"\" is not interested in", NULL);
+	return TCL_ERROR;
+    }
+
+    /*
+     * We have the channel and the events to post.
+     */
+
+    Tcl_NotifyChannel(chan, events);
+
+    /*
+     * Squash interp results left by the event script.
+     */
+
+    Tcl_ResetResult(interp);
+    return TCL_OK;
+
+#undef CHAN
+#undef EVENT
+}
+
+/*
+ * Channel error message marshalling utilities.
+ */
+
+static Tcl_Obj*
+MarshallError(
+    Tcl_Interp *interp)
+{
+    /*
+     * Capture the result status of the interpreter into a string. => List of
+     * options and values, followed by the error message. The result has
+     * refCount 0.
+     */
+
+    Tcl_Obj *returnOpt = Tcl_GetReturnOptions(interp, TCL_ERROR);
+
+    /*
+     * => returnOpt.refCount == 0. We can append directly.
+     */
+
+    Tcl_ListObjAppendElement(NULL, returnOpt, Tcl_GetObjResult(interp));
+    return returnOpt;
+}
+
+static void
+UnmarshallErrorResult(
+    Tcl_Interp *interp,
+    Tcl_Obj *msgObj)
+{
+    int lc;
+    Tcl_Obj **lv;
+    int explicitResult;
+    int numOptions;
+
+    /*
+     * Process the caught message.
+     *
+     * Syntax = (option value)... ?message?
+     *
+     * Bad syntax causes a panic. This is OK because the other side uses
+     * Tcl_GetReturnOptions and list construction functions to marshall the
+     * information; if we panic here, something has gone badly wrong already.
+     */
+
+    if (Tcl_ListObjGetElements(interp, msgObj, &lc, &lv) != TCL_OK) {
+	Tcl_Panic("TclChanCaughtErrorBypass: Bad syntax of caught result");
+    }
+    if (interp == NULL) {
+	return;
+    }
+
+    explicitResult = lc & 1;		/* Odd number of values? */
+    numOptions = lc - explicitResult;
+
+    if (explicitResult) {
+	Tcl_SetObjResult(interp, lv[lc-1]);
+    }
+
+    (void) Tcl_SetReturnOptions(interp, Tcl_NewListObj(numOptions, lv));
+    ((Interp *)interp)->flags &= ~ERR_ALREADY_LOGGED;
+}
+
+int
+TclChanCaughtErrorBypass(
+    Tcl_Interp *interp,
+    Tcl_Channel chan)
+{
+    Tcl_Obj *chanMsgObj = NULL;
+    Tcl_Obj *interpMsgObj = NULL;
+    Tcl_Obj *msgObj = NULL;
+
+    /*
+     * Get a bypassed error message from channel and/or interpreter, save the
+     * reference, then kill the returned objects, if there were any. If there
+     * are messages in both the channel has preference.
+     */
+
+    if ((chan == NULL) && (interp == NULL)) {
+	return 0;
+    }
+
+    if (chan != NULL) {
+	Tcl_GetChannelError(chan, &chanMsgObj);
+    }
+    if (interp != NULL) {
+	Tcl_GetChannelErrorInterp(interp, &interpMsgObj);
+    }
+
+    if (chanMsgObj != NULL) {
+	msgObj = chanMsgObj;
+    } else if (interpMsgObj != NULL) {
+	msgObj = interpMsgObj;
+    }
+    if (msgObj != NULL) {
+	Tcl_IncrRefCount(msgObj);
+    }
+
+    if (chanMsgObj != NULL) {
+	Tcl_DecrRefCount(chanMsgObj);
+    }
+    if (interpMsgObj != NULL) {
+	Tcl_DecrRefCount(interpMsgObj);
+    }
+
+    /*
+     * No message returned, nothing caught.
+     */
+
+    if (msgObj == NULL) {
+	return 0;
+    }
+
+    UnmarshallErrorResult(interp, msgObj);
+
+    Tcl_DecrRefCount(msgObj);
+    return 1;
+}
+
+/*
+ * Driver functions. ================================================
+ */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectClose --
+ *
+ *	This function is invoked when the channel is closed, to delete the
+ *	driver specific instance data.
+ *
+ * Results:
+ *	A posix error.
+ *
+ * Side effects:
+ *	Releases memory. Arbitrary, as it calls upon a script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ReflectClose(
+    ClientData clientData,
+    Tcl_Interp *interp)
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    int result;			/* Result code for 'close' */
+    Tcl_Obj *resObj;		/* Result data for 'close' */
+    ReflectedChannelMap* rcmPtr; /* Map of reflected channels with handlers in this interp */
+    Tcl_HashEntry* hPtr;         /* Entry in the above map */
+
+    if (TclInThreadExit()) {
+	/*
+	 * This call comes from TclFinalizeIOSystem. There are no
+	 * interpreters, and therefore we cannot call upon the handler command
+	 * anymore. Threading is irrelevant as well. We simply clean up all
+	 * our C level data structures and leave the Tcl level to the other
+	 * finalization functions.
+	 */
+
+	/*
+	 * THREADED => Forward this to the origin thread
+	 *
+	 * Note: DeleteThreadReflectedChannelMap() is the thread exit handler for the origin
+	 * thread. Use this to clean up the structure? Except if lost?
+	 */
+
+#ifdef TCL_THREADS
+	if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	    ForwardParam p;
+
+	    ForwardOpToOwnerThread(rcPtr, ForwardedClose, &p);
+	    result = p.base.code;
+
+	    /*
+	     * FreeReflectedChannel is done in the forwarded operation!, in
+	     * the other thread. rcPtr here is gone!
+	     */
+
+	    if (result != TCL_OK) {
+		FreeReceivedError(&p);
+	    }
+	    return EOK;
+	}
+#endif
+
+        Tcl_EventuallyFree (rcPtr, (Tcl_FreeProc *) FreeReflectedChannel);
+	return EOK;
+    }
+
+    /*
+     * -- No -- ASSERT rcPtr->methods & FLAG(METH_FINAL)
+     *
+     * A cleaned method mask here implies that the channel creation was
+     * aborted, and "finalize" must not be called.
+     */
+
+    if (rcPtr->methods == 0) {
+        Tcl_EventuallyFree (rcPtr, (Tcl_FreeProc *) FreeReflectedChannel);
+	return EOK;
+    }
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	ForwardOpToOwnerThread(rcPtr, ForwardedClose, &p);
+	result = p.base.code;
+
+	/*
+	 * FreeReflectedChannel is done in the forwarded operation!, in the
+	 * other thread. rcPtr here is gone!
+	 */
+
+	if (result != TCL_OK) {
+	    PassReceivedErrorInterp(interp, &p);
+	}
+    } else {
+#endif
+	result = InvokeTclMethod(rcPtr, "finalize", NULL, NULL, &resObj);
+	if ((result != TCL_OK) && (interp != NULL)) {
+	    Tcl_SetChannelErrorInterp(interp, resObj);
+	}
+
+	Tcl_DecrRefCount(resObj);	/* Remove reference we held from the
+					 * invoke */
+
+	/*
+	 * Remove the channel from the map before releasing the memory, to
+	 * prevent future accesses (like by 'postevent') from finding and
+	 * dereferencing a dangling pointer.
+	 *
+	 * NOTE: The channel may not be in the map. This is ok, that happens
+	 * when the channel was created in a different interpreter and/or
+	 * thread and then was moved here.
+	 *
+	 * NOTE: The channel may have been removed from the map already via
+	 * the per-interp DeleteReflectedChannelMap exit-handler.
+	 */
+
+	if (rcPtr->interp) {
+	    rcmPtr = GetReflectedChannelMap (rcPtr->interp);
+	    hPtr = Tcl_FindHashEntry (&rcmPtr->map, 
+				      Tcl_GetChannelName (rcPtr->chan));
+	    if (hPtr) {
+		Tcl_DeleteHashEntry (hPtr);
+	    }
+	}
+#ifdef TCL_THREADS
+        rcmPtr = GetThreadReflectedChannelMap();
+	hPtr = Tcl_FindHashEntry (&rcmPtr->map, 
+				  Tcl_GetChannelName (rcPtr->chan));
+	if (hPtr) {
+	    Tcl_DeleteHashEntry (hPtr);
+	}
+#endif
+
+        Tcl_EventuallyFree (rcPtr, (Tcl_FreeProc *) FreeReflectedChannel);
+#ifdef TCL_THREADS
+    }
+#endif
+    return (result == TCL_OK) ? EOK : EINVAL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectInput --
+ *
+ *	This function is invoked when more data is requested from the channel.
+ *
+ * Results:
+ *	The number of bytes read.
+ *
+ * Side effects:
+ *	Allocates memory. Arbitrary, as it calls upon a script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ReflectInput(
+    ClientData clientData,
+    char *buf,
+    int toRead,
+    int *errorCodePtr)
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    Tcl_Obj *toReadObj;
+    int bytec;			/* Number of returned bytes */
+    unsigned char *bytev;	/* Array of returned bytes */
+    Tcl_Obj *resObj;		/* Result data for 'read' */
+
+    /*
+     * The following check can be done before thread redirection, because we
+     * are reading from an item which is readonly, i.e. will never change
+     * during the lifetime of the channel.
+     */
+
+    if (!(rcPtr->methods & FLAG(METH_READ))) {
+	SetChannelErrorStr(rcPtr->chan, msg_read_unsup);
+	*errorCodePtr = EINVAL;
+	return -1;
+    }
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	p.input.buf = buf;
+	p.input.toRead = toRead;
+
+	ForwardOpToOwnerThread(rcPtr, ForwardedInput, &p);
+
+	if (p.base.code != TCL_OK) {
+	    if (p.base.code < 0) {
+		/* No error message, this is an errno signal. */
+		*errorCodePtr = -p.base.code;
+	    } else {
+		PassReceivedError(rcPtr->chan, &p);
+		*errorCodePtr = EINVAL;
+	    }
+	    p.input.toRead = -1;
+	} else {
+	    *errorCodePtr = EOK;
+	}
+
+	return p.input.toRead;
+    }
+#endif
+
+    /* ASSERT: rcPtr->method & FLAG(METH_READ) */
+    /* ASSERT: rcPtr->mode & TCL_READABLE */
+
+    Tcl_Preserve(rcPtr);
+
+    toReadObj = Tcl_NewIntObj(toRead);
+    Tcl_IncrRefCount(toReadObj);
+
+    if (InvokeTclMethod(rcPtr, "read", toReadObj, NULL, &resObj)!=TCL_OK) {
+	int code = ErrnoReturn (rcPtr, resObj);
+
+	if (code < 0) {
+	    *errorCodePtr = -code;
+            goto error;
+	}
+
+	Tcl_SetChannelError(rcPtr->chan, resObj);
+        goto invalid;
+    }
+
+    bytev = Tcl_GetByteArrayFromObj(resObj, &bytec);
+
+    if (toRead < bytec) {
+	SetChannelErrorStr(rcPtr->chan, msg_read_toomuch);
+        goto invalid;
+    }
+
+    *errorCodePtr = EOK;
+
+    if (bytec > 0) {
+	memcpy(buf, bytev, (size_t)bytec);
+    }
+
+ stop:
+    Tcl_DecrRefCount(toReadObj);
+    Tcl_DecrRefCount(resObj);		/* Remove reference held from invoke */
+    Tcl_Release(rcPtr);
+    return bytec;
+ invalid:
+    *errorCodePtr = EINVAL;
+ error:
+    bytec = -1;
+    goto stop;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectOutput --
+ *
+ *	This function is invoked when data is writen to the channel.
+ *
+ * Results:
+ *	The number of bytes actually written.
+ *
+ * Side effects:
+ *	Allocates memory. Arbitrary, as it calls upon a script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ReflectOutput(
+    ClientData clientData,
+    const char *buf,
+    int toWrite,
+    int *errorCodePtr)
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    Tcl_Obj *bufObj;
+    Tcl_Obj *resObj;		/* Result data for 'write' */
+    int written;
+
+    /*
+     * The following check can be done before thread redirection, because we
+     * are reading from an item which is readonly, i.e. will never change
+     * during the lifetime of the channel.
+     */
+
+    if (!(rcPtr->methods & FLAG(METH_WRITE))) {
+	SetChannelErrorStr(rcPtr->chan, msg_write_unsup);
+	*errorCodePtr = EINVAL;
+	return -1;
+    }
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	p.output.buf = buf;
+	p.output.toWrite = toWrite;
+
+	ForwardOpToOwnerThread(rcPtr, ForwardedOutput, &p);
+
+	if (p.base.code != TCL_OK) {
+	    if (p.base.code < 0) {
+		/* No error message, this is an errno signal. */
+		*errorCodePtr = -p.base.code;
+	    } else {
+                PassReceivedError(rcPtr->chan, &p);
+                *errorCodePtr = EINVAL;
+            }
+	    p.output.toWrite = -1;
+	} else {
+	    *errorCodePtr = EOK;
+	}
+
+	return p.output.toWrite;
+    }
+#endif
+
+    /* ASSERT: rcPtr->method & FLAG(METH_WRITE) */
+    /* ASSERT: rcPtr->mode & TCL_WRITABLE */
+
+    Tcl_Preserve(rcPtr);
+
+    bufObj = Tcl_NewByteArrayObj((unsigned char *) buf, toWrite);
+    Tcl_IncrRefCount(bufObj);
+
+    if (InvokeTclMethod(rcPtr, "write", bufObj, NULL, &resObj) != TCL_OK) {
+	int code = ErrnoReturn(rcPtr, resObj);
+
+	if (code < 0) {
+	    *errorCodePtr = -code;
+            goto error;
+	}
+
+	Tcl_SetChannelError(rcPtr->chan, resObj);
+        goto invalid;
+    }
+
+    if (Tcl_GetIntFromObj(rcPtr->interp, resObj, &written) != TCL_OK) {
+	Tcl_SetChannelError(rcPtr->chan, MarshallError(rcPtr->interp));
+        goto invalid;
+    }
+
+    if ((written == 0) && (toWrite > 0)) {
+	/*
+	 * The handler claims to have written nothing of what it was
+	 * given. That is bad.
+	 */
+
+	SetChannelErrorStr(rcPtr->chan, msg_write_nothing);
+        goto invalid;
+    }
+    if (toWrite < written) {
+	/*
+	 * The handler claims to have written more than it was given. That is
+	 * bad. Note that the I/O core would crash if we were to return this
+	 * information, trying to write -nnn bytes in the next iteration.
+	 */
+
+	SetChannelErrorStr(rcPtr->chan, msg_write_toomuch);
+        goto invalid;
+    }
+
+    *errorCodePtr = EOK;
+ stop:
+    Tcl_DecrRefCount(bufObj);
+    Tcl_DecrRefCount(resObj);		/* Remove reference held from invoke */
+    Tcl_Release(rcPtr);
+    return written;
+ invalid:
+    *errorCodePtr = EINVAL;
+ error:
+    written = -1;
+    goto stop;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectSeekWide / ReflectSeek --
+ *
+ *	This function is invoked when the user wishes to seek on the channel.
+ *
+ * Results:
+ *	The new location of the access point.
+ *
+ * Side effects:
+ *	Allocates memory. Arbitrary, as it calls upon a script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_WideInt
+ReflectSeekWide(
+    ClientData clientData,
+    Tcl_WideInt offset,
+    int seekMode,
+    int *errorCodePtr)
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    Tcl_Obj *offObj, *baseObj;
+    Tcl_Obj *resObj;		/* Result for 'seek' */
+    Tcl_WideInt newLoc;
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	p.seek.seekMode = seekMode;
+	p.seek.offset = offset;
+
+	ForwardOpToOwnerThread(rcPtr, ForwardedSeek, &p);
+
+	if (p.base.code != TCL_OK) {
+	    PassReceivedError(rcPtr->chan, &p);
+	    *errorCodePtr = EINVAL;
+	    p.seek.offset = -1;
+	} else {
+	    *errorCodePtr = EOK;
+	}
+
+	return p.seek.offset;
+    }
+#endif
+
+    /* ASSERT: rcPtr->method & FLAG(METH_SEEK) */
+
+    Tcl_Preserve(rcPtr);
+
+    offObj = Tcl_NewWideIntObj(offset);
+    baseObj = Tcl_NewStringObj((seekMode == SEEK_SET) ? "start" :
+	    ((seekMode == SEEK_CUR) ? "current" : "end"), -1);
+    Tcl_IncrRefCount(offObj);
+    Tcl_IncrRefCount(baseObj);
+
+    if (InvokeTclMethod(rcPtr, "seek", offObj, baseObj, &resObj)!=TCL_OK) {
+	Tcl_SetChannelError(rcPtr->chan, resObj);
+        goto invalid;
+    }
+
+    if (Tcl_GetWideIntFromObj(rcPtr->interp, resObj, &newLoc) != TCL_OK) {
+	Tcl_SetChannelError(rcPtr->chan, MarshallError(rcPtr->interp));
+        goto invalid;
+    }
+
+    if (newLoc < Tcl_LongAsWide(0)) {
+	SetChannelErrorStr(rcPtr->chan, msg_seek_beforestart);
+        goto invalid;
+    }
+
+    *errorCodePtr = EOK;
+ stop:
+    Tcl_DecrRefCount(offObj);
+    Tcl_DecrRefCount(baseObj);
+    Tcl_DecrRefCount(resObj);		/* Remove reference held from invoke */
+    Tcl_Release(rcPtr);
+    return newLoc;
+ invalid:
+    *errorCodePtr = EINVAL;
+    newLoc = -1;
+    goto stop;
+}
+
+static int
+ReflectSeek(
+    ClientData clientData,
+    long offset,
+    int seekMode,
+    int *errorCodePtr)
+{
+    /*
+     * This function can be invoked from a transformation which is based on
+     * standard seeking, i.e. non-wide. Because of this we have to implement
+     * it, a dummy is not enough. We simply delegate the call to the wide
+     * routine.
+     */
+
+    return (int) ReflectSeekWide(clientData, Tcl_LongAsWide(offset), seekMode,
+	    errorCodePtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectWatch --
+ *
+ *	This function is invoked to tell the channel what events the I/O
+ *	system is interested in.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Allocates memory. Arbitrary, as it calls upon a script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ReflectWatch(
+    ClientData clientData,
+    int mask)
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    Tcl_Obj *maskObj;
+
+    /* ASSERT rcPtr->methods & FLAG(METH_WATCH) */
+
+    /*
+     * We restrict the interest to what the channel can support. IOW there
+     * will never be write events for a channel which is not writable.
+     * Analoguously for read events and non-readable channels.
+     */
+
+    mask &= rcPtr->mode;
+
+    if (mask == rcPtr->interest) {
+	/*
+	 * Same old, same old, why should we do something?
+	 */
+
+	return;
+    }
+
+    rcPtr->interest = mask;
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	p.watch.mask = mask;
+	ForwardOpToOwnerThread(rcPtr, ForwardedWatch, &p);
+
+	/*
+	 * Any failure from the forward is ignored. We have no place to put
+	 * this.
+	 */
+
+	return;
+    }
+#endif
+
+    Tcl_Preserve(rcPtr);
+
+    maskObj = DecodeEventMask(mask);
+    /* assert maskObj.refCount == 1 */
+    (void) InvokeTclMethod(rcPtr, "watch", maskObj, NULL, NULL);
+    Tcl_DecrRefCount(maskObj);
+
+    Tcl_Release(rcPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectBlock --
+ *
+ *	This function is invoked to tell the channel which blocking behaviour
+ *	is required of it.
+ *
+ * Results:
+ *	A posix error number.
+ *
+ * Side effects:
+ *	Allocates memory. Arbitrary, as it calls upon a script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ReflectBlock(
+    ClientData clientData,
+    int nonblocking)
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    Tcl_Obj *blockObj;
+    int errorNum;		/* EINVAL or EOK (success). */
+    Tcl_Obj *resObj;		/* Result data for 'blocking' */
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	p.block.nonblocking = nonblocking;
+
+	ForwardOpToOwnerThread(rcPtr, ForwardedBlock, &p);
+
+	if (p.base.code != TCL_OK) {
+	    PassReceivedError(rcPtr->chan, &p);
+	    return EINVAL;
+	}
+
+	return EOK;
+    }
+#endif
+
+    blockObj = Tcl_NewBooleanObj(!nonblocking);
+    Tcl_IncrRefCount(blockObj);
+
+    Tcl_Preserve(rcPtr);
+
+    if (InvokeTclMethod(rcPtr, "blocking", blockObj, NULL, &resObj) != TCL_OK) {
+	Tcl_SetChannelError(rcPtr->chan, resObj);
+	errorNum = EINVAL;
+    } else {
+	errorNum = EOK;
+    }
+
+    Tcl_DecrRefCount(blockObj);
+    Tcl_DecrRefCount(resObj);		/* Remove reference held from invoke */
+
+    Tcl_Release(rcPtr);
+    return errorNum;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectSetOption --
+ *
+ *	This function is invoked to configure a channel option.
+ *
+ * Results:
+ *	A standard Tcl result code.
+ *
+ * Side effects:
+ *	Arbitrary, as it calls upon a Tcl script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ReflectSetOption(
+    ClientData clientData,	/* Channel to query */
+    Tcl_Interp *interp,		/* Interpreter to leave error messages in */
+    const char *optionName,	/* Name of requested option */
+    const char *newValue)	/* The new value */
+{
+    ReflectedChannel *rcPtr = (ReflectedChannel *) clientData;
+    Tcl_Obj *optionObj, *valueObj;
+    int result;			/* Result code for 'configure' */
+    Tcl_Obj *resObj;		/* Result data for 'configure' */
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	ForwardParam p;
+
+	p.setOpt.name = optionName;
+	p.setOpt.value = newValue;
+
+	ForwardOpToOwnerThread(rcPtr, ForwardedSetOpt, &p);
+
+	if (p.base.code != TCL_OK) {
+	    Tcl_Obj *err = Tcl_NewStringObj(p.base.msgStr, -1);
+
+	    UnmarshallErrorResult(interp, err);
+	    Tcl_DecrRefCount(err);
+	    FreeReceivedError(&p);
+	}
+
+	return p.base.code;
+    }
+#endif
+    Tcl_Preserve(rcPtr);
+
+    optionObj = Tcl_NewStringObj(optionName, -1);
+    valueObj = Tcl_NewStringObj(newValue, -1);
+
+    Tcl_IncrRefCount(optionObj);
+    Tcl_IncrRefCount(valueObj);
+
+    result = InvokeTclMethod(rcPtr, "configure",optionObj,valueObj, &resObj);
+    if (result != TCL_OK) {
+	UnmarshallErrorResult(interp, resObj);
+    }
+
+    Tcl_DecrRefCount(optionObj);
+    Tcl_DecrRefCount(valueObj);
+    Tcl_DecrRefCount(resObj);		/* Remove reference held from invoke */
+    Tcl_Release(rcPtr);
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReflectGetOption --
+ *
+ *	This function is invoked to retrieve all or a channel option.
+ *
+ * Results:
+ *	A standard Tcl result code.
+ *
+ * Side effects:
+ *	Arbitrary, as it calls upon a Tcl script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ReflectGetOption(
+    ClientData clientData,	/* Channel to query */
+    Tcl_Interp *interp,		/* Interpreter to leave error messages in */
+    const char *optionName,	/* Name of reuqested option */
+    Tcl_DString *dsPtr)		/* String to place the result into */
+{
+    /*
+     * This code is special. It has regular passing of Tcl result, and errors.
+     * The bypass functions are not required.
+     */
+
+    ReflectedChannel *rcPtr = (ReflectedChannel*) clientData;
+    Tcl_Obj *optionObj;
+    Tcl_Obj *resObj;		/* Result data for 'configure' */
+    int listc, result = TCL_OK;
+    Tcl_Obj **listv;
+    const char *method;
+
+    /*
+     * Are we in the correct thread?
+     */
+
+#ifdef TCL_THREADS
+    if (rcPtr->thread != Tcl_GetCurrentThread()) {
+	int opcode;
+	ForwardParam p;
+
+	p.getOpt.name = optionName;
+	p.getOpt.value = dsPtr;
+
+	if (optionName == NULL) {
+	    opcode = ForwardedGetOptAll;
+	} else {
+	    opcode = ForwardedGetOpt;
+	}
+
+	ForwardOpToOwnerThread(rcPtr, opcode, &p);
+
+	if (p.base.code != TCL_OK) {
+	    Tcl_Obj *err = Tcl_NewStringObj(p.base.msgStr, -1);
+
+	    UnmarshallErrorResult(interp, err);
+	    Tcl_DecrRefCount(err);
+	    FreeReceivedError(&p);
+	}
+
+	return p.base.code;
+    }
+#endif
+
+    if (optionName == NULL) {
+	/*
+	 * Retrieve all options.
+	 */
+
+	method = "cgetall";
+	optionObj = NULL;
+    } else {
+	/*
+	 * Retrieve the value of one option.
+	 */
+
+	method = "cget";
+	optionObj = Tcl_NewStringObj(optionName, -1);
+        Tcl_IncrRefCount(optionObj);
+    }
+
+    Tcl_Preserve(rcPtr);
+
+    if (InvokeTclMethod(rcPtr, method, optionObj, NULL, &resObj)!=TCL_OK) {
+	UnmarshallErrorResult(interp, resObj);
+        goto error;
+    }
+
+    /*
+     * The result has to go into the 'dsPtr' for propagation to the caller of
+     * the driver.
+     */
+
+    if (optionObj != NULL) {
+	Tcl_DStringAppend(dsPtr, TclGetString(resObj), -1);
+        goto ok;
+    }
+
+    /*
+     * Extract the list and append each item as element.
+     */
+
+    /*
+     * NOTE (4): If we extract the string rep we can assume a properly quoted
+     * string. Together with a separating space this way of simply appending
+     * the whole string rep might be faster. It also doesn't check if the
+     * result is a valid list. Nor that the list has an even number elements.
+     */
+
+    if (Tcl_ListObjGetElements(interp, resObj, &listc, &listv) != TCL_OK) {
+        goto error;
+    }
+
+    if ((listc % 2) == 1) {
+	/*
+	 * Odd number of elements is wrong.
+	 */
+
+	Tcl_ResetResult(interp);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"Expected list with even number of "
+		"elements, got %d element%s instead", listc,
+		(listc == 1 ? "" : "s")));
+        goto error;
+    } else {
+	int len;
+	char *str = Tcl_GetStringFromObj(resObj, &len);
+
+	if (len) {
+	    Tcl_DStringAppend(dsPtr, " ", 1);
+	    Tcl_DStringAppend(dsPtr, str, len);
+	}
+        goto ok;
+    }
+
+ ok:
+    result = TCL_OK;
+ stop:
+    if (optionObj) {
+        Tcl_DecrRefCount(optionObj);
+    }
+    Tcl_DecrRefCount(resObj);	/* Remove reference held from invoke */
+    Tcl_Release(rcPtr);
+    return result;
+ error:
+    result = TCL_ERROR;
+    goto stop;
+}
+
+/*
+ * Helpers. =========================================================
+ */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * EncodeEventMask --
+ *
+ *	This function takes a list of event items and constructs the
+ *	equivalent internal bitmask. The list must contain at least one
+ *	element. Elements are "read", "write", or any unique abbreviation of
+ *	them. Note that the bitmask is not changed if problems are
+ *	encountered.
+ *
+ * Results:
+ *	A standard Tcl error code. A bitmask where TCL_READABLE and/or
+ *	TCL_WRITABLE can be set.
+ *
+ * Side effects:
+ *	May shimmer 'obj' to a list representation. May place an error message
+ *	into the interp result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+EncodeEventMask(
+    Tcl_Interp *interp,
+    const char *objName,
+    Tcl_Obj *obj,
+    int *mask)
+{
+    int events;			/* Mask of events to post */
+    int listc;			/* #elements in eventspec list */
+    Tcl_Obj **listv;		/* Elements of eventspec list */
+    int evIndex;		/* Id of event for an element of the eventspec
+				 * list. */
+
+    if (Tcl_ListObjGetElements(interp, obj, &listc, &listv) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    if (listc < 1) {
+	Tcl_AppendResult(interp, "bad ", objName, " list: is empty", NULL);
+	return TCL_ERROR;
+    }
+
+    events = 0;
+    while (listc > 0) {
+	if (Tcl_GetIndexFromObj(interp, listv[listc-1], eventOptions,
+		objName, 0, &evIndex) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch (evIndex) {
+	case EVENT_READ:
+	    events |= TCL_READABLE;
+	    break;
+	case EVENT_WRITE:
+	    events |= TCL_WRITABLE;
+	    break;
+	}
+	listc --;
+    }
+
+    *mask = events;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DecodeEventMask --
+ *
+ *	This function takes an internal bitmask of events and constructs the
+ *	equivalent list of event items.
+ *
+ * Results:
+ *	A Tcl_Obj reference. The object will have a refCount of one. The user
+ *	has to decrement it to release the object.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+DecodeEventMask(
+    int mask)
+{
+    register const char *eventStr;
+    Tcl_Obj *evObj;
+
+    switch (mask & RANDW) {
+    case RANDW:
+	eventStr = "read write";
+	break;
+    case TCL_READABLE:
+	eventStr = "read";
+	break;
+    case TCL_WRITABLE:
+	eventStr = "write";
+	break;
+    default:
+	eventStr = "";
+	break;
+    }
+
+    evObj = Tcl_NewStringObj(eventStr, -1);
+    Tcl_IncrRefCount(evObj);
+    return evObj;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NewReflectedChannel --
+ *
+ *	This function is invoked to allocate and initialize the instance data
+ *	of a new reflected channel.
+ *
+ * Results:
+ *	A heap-allocated channel instance.
+ *
+ * Side effects:
+ *	Allocates memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static ReflectedChannel *
+NewReflectedChannel(
+    Tcl_Interp *interp,
+    Tcl_Obj *cmdpfxObj,
+    int mode,
+    Tcl_Obj *handleObj)
+{
+    ReflectedChannel *rcPtr;
+    int i, listc;
+    Tcl_Obj **listv;
+
+    rcPtr = (ReflectedChannel *) ckalloc(sizeof(ReflectedChannel));
+
+    /* rcPtr->chan: Assigned by caller. Dummy data here. */
+    /* rcPtr->methods: Assigned by caller. Dummy data here. */
+
+    rcPtr->chan = NULL;
+    rcPtr->methods = 0;
+    rcPtr->interp = interp;
+#ifdef TCL_THREADS
+    rcPtr->thread = Tcl_GetCurrentThread();
+#endif
+    rcPtr->mode = mode;
+    rcPtr->interest = 0;		/* Initially no interest registered */
+
+    /*
+     * Method placeholder.
+     */
+
+    /* ASSERT: cmdpfxObj is a Tcl List */
+
+    Tcl_ListObjGetElements(interp, cmdpfxObj, &listc, &listv);
+
+    /*
+     * See [==] as well.
+     * Storage for the command prefix and the additional words required for
+     * the invocation of methods in the command handler.
+     *
+     * listv [0] [listc-1] | [listc]  [listc+1] |
+     * argv  [0]   ... [.] | [argc-2] [argc-1]  | [argc]  [argc+2]
+     *       cmd   ... pfx | method   chan      | detail1 detail2
+     */
+
+    rcPtr->argc = listc + 2;
+    rcPtr->argv = (Tcl_Obj **) ckalloc(sizeof(Tcl_Obj *) * (listc+4));
+
+    /*
+     * Duplicate object references.
+     */
+
+    for (i=0; i<listc ; i++) {
+	Tcl_Obj *word = rcPtr->argv[i] = listv[i];
+
+	Tcl_IncrRefCount(word);
+    }
+
+    i++;				/* Skip placeholder for method */
+
+    /*
+     * [Bug 1667990]: See [x] in FreeReflectedChannel for release
+     */
+
+    rcPtr->argv[i] = handleObj;
+    Tcl_IncrRefCount(handleObj);
+
+    /*
+     * The next two objects are kept empty, varying arguments.
+     */
+
+    /*
+     * Initialization complete.
+     */
+
+    return rcPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NextHandle --
+ *
+ *	This function is invoked to generate a channel handle for a new
+ *	reflected channel.
+ *
+ * Results:
+ *	A Tcl_Obj containing the string of the new channel handle. The
+ *	refcount of the returned object is -- zero --.
+ *
+ * Side effects:
+ *	May allocate memory. Mutex protected critical section locks out other
+ *	threads for a short time.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj *
+NextHandle(void)
+{
+    /*
+     * Count number of generated reflected channels. Used for id generation.
+     * Ids are never reclaimed and there is no dealing with wrap around. On
+     * the other hand, "unsigned long" should be big enough except for
+     * absolute longrunners (generate a 100 ids per second => overflow will
+     * occur in 1 1/3 years).
+     */
+
+    TCL_DECLARE_MUTEX(rcCounterMutex)
+    static unsigned long rcCounter = 0;
+    Tcl_Obj *resObj;
+
+    Tcl_MutexLock(&rcCounterMutex);
+    resObj = Tcl_ObjPrintf("rc%lu", rcCounter);
+    rcCounter++;
+    Tcl_MutexUnlock(&rcCounterMutex);
+
+    return resObj;
+}
+
+static void
+FreeReflectedChannel(
+    ReflectedChannel *rcPtr)
+{
+    Channel *chanPtr = (Channel *) rcPtr->chan;
+    int i, n;
+
+    if (chanPtr->typePtr != &tclRChannelType) {
+	/*
+	 * Delete a cloned ChannelType structure.
+	 */
+
+	ckfree((char*) chanPtr->typePtr);
+    }
+
+    n = rcPtr->argc - 2;
+    for (i=0; i<n; i++) {
+	Tcl_DecrRefCount(rcPtr->argv[i]);
+    }
+
+    /*
+     * [Bug 1667990]: See [x] in NewReflectedChannel for lock. n+1 = argc-1.
+     */
+
+    Tcl_DecrRefCount(rcPtr->argv[n+1]);
+
+    ckfree((char*) rcPtr->argv);
+    ckfree((char*) rcPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * InvokeTclMethod --
+ *
+ *	This function is used to invoke the Tcl level of a reflected channel.
+ *	It handles all the command assembly, invokation, and generic state and
+ *	result mgmt. It does *not* handle thread redirection; that is the
+ *	responsibility of clients of this function.
+ *
+ * Results:
+ *	Result code and data as returned by the method.
+ *
+ * Side effects:
+ *	Arbitrary, as it calls upon a Tcl script.
+ *
+ * Contract:
+ *	argOneObj.refCount >= 1 on entry and exit, if argOneObj != NULL
+ *	argTwoObj.refCount >= 1 on entry and exit, if argTwoObj != NULL
+ *	resObj.refCount in {0, 1, ...}
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+InvokeTclMethod(
+    ReflectedChannel *rcPtr,
+    const char *method,
+    Tcl_Obj *argOneObj,		/* NULL'able */
+    Tcl_Obj *argTwoObj,		/* NULL'able */
+    Tcl_Obj **resultObjPtr)	/* NULL'able */
+{
+    int cmdc;			/* #words in constructed command */
+    Tcl_Obj *methObj = NULL;	/* Method name in object form */
+    Tcl_InterpState sr;		/* State of handler interp */
+    int result;			/* Result code of method invokation */
+    Tcl_Obj *resObj = NULL;	/* Result of method invokation. */
+
+    if (!rcPtr->interp) {
+	/*
+	 * The channel is marked as dead. Bail out immediately, with an
+	 * appropriate error.
+	 */
+
+	if (resultObjPtr != NULL) {
+	    resObj = Tcl_NewStringObj(msg_dstlost,-1);
+	    *resultObjPtr = resObj;
+	    Tcl_IncrRefCount(resObj);
+	}
+
+        /*
+         * Not touching argOneObj, argTwoObj, they have not been used.
+         * See the contract as well.
+         */
+
+	return TCL_ERROR;
+    }
+
+    /*
+     * NOTE (5): Decide impl. issue: Cache objects with method names? Needs
+     * TSD data as reflections can be created in many different threads.
+     * NO: Caching of command resolutions means storage per channel.
+     */
+
+    /*
+     * Insert method into the pre-allocated area, after the command prefix,
+     * before the channel id.
+     */
+
+    methObj = Tcl_NewStringObj(method, -1);
+    Tcl_IncrRefCount(methObj);
+    rcPtr->argv[rcPtr->argc - 2] = methObj;
+
+    /*
+     * Append the additional argument containing method specific details
+     * behind the channel id. If specified.
+     */
+
+    cmdc = rcPtr->argc;
+    if (argOneObj) {
+	rcPtr->argv[cmdc] = argOneObj;
+	cmdc++;
+	if (argTwoObj) {
+	    rcPtr->argv[cmdc] = argTwoObj;
+	    cmdc++;
+	}
+    }
+
+    /*
+     * And run the handler... This is done in auch a manner which leaves any
+     * existing state intact.
+     */
+
+    sr = Tcl_SaveInterpState(rcPtr->interp, 0 /* Dummy */);
+    Tcl_Preserve(rcPtr->interp);
+    result = Tcl_EvalObjv(rcPtr->interp, cmdc, rcPtr->argv, TCL_EVAL_GLOBAL);
+
+    /*
+     * We do not try to extract the result information if the caller has no
+     * interest in it. I.e. there is no need to put effort into creating
+     * something which is discarded immediately after.
+     */
+
+    if (resultObjPtr) {
+	if (result == TCL_OK) {
+	    /*
+	     * Ok result taken as is, also if the caller requests that there
+	     * is no capture.
+	     */
+
+	    resObj = Tcl_GetObjResult(rcPtr->interp);
+	} else {
+	    /*
+	     * Non-ok result is always treated as an error. We have to capture
+	     * the full state of the result, including additional options.
+	     *
+	     * This is complex and ugly, and would be completely unnecessary
+	     * if we only added support for a TCL_FORBID_EXCEPTIONS flag.
+	     */
+
+	    if (result != TCL_ERROR) {
+		Tcl_Obj *cmd = Tcl_NewListObj(cmdc, rcPtr->argv);
+		int cmdLen;
+		const char *cmdString = Tcl_GetStringFromObj(cmd, &cmdLen);
+
+		Tcl_IncrRefCount(cmd);
+		Tcl_ResetResult(rcPtr->interp);
+		Tcl_SetObjResult(rcPtr->interp, Tcl_ObjPrintf(
+			"chan handler returned bad code: %d", result));
+		Tcl_LogCommandInfo(rcPtr->interp, cmdString, cmdString,
+			cmdLen);
+		Tcl_DecrRefCount(cmd);
+		result = TCL_ERROR;
+	    }
+	    Tcl_AppendObjToErrorInfo(rcPtr->interp, Tcl_ObjPrintf(
+		    "\n    (chan handler subcommand \"%s\")", method));
+	    resObj = MarshallError(rcPtr->interp);
+	}
+	Tcl_IncrRefCount(resObj);
+    }
+    Tcl_RestoreInterpState(rcPtr->interp, sr);
+    Tcl_Release(rcPtr->interp);
+
+    /*
+     * Cleanup of the dynamic parts of the command.
+     *
+     * The detail objects survived the Tcl_EvalObjv without change because of
+     * the contract. Therefore there is no need to decrement the refcounts. Only
+     * the internal method object has to be disposed of.
+     */
+
+    Tcl_DecrRefCount(methObj);
+
+    /*
+     * The resObj has a ref count of 1 at this location. This means that the
+     * caller of InvokeTclMethod has to dispose of it (but only if it was
+     * returned to it).
+     */
+
+    if (resultObjPtr != NULL) {
+	*resultObjPtr = resObj;
+    }
+
+    /*
+     * There no need to handle the case where nothing is returned, because for
+     * that case resObj was not set anyway.
+     */
+
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ErrnoReturn --
+ *
+ *	Checks a method error result if it returned an 'errno'.
+ *
+ * Results:
+ *	The negative errno found in the error result, or 0.
+ *
+ * Side effects:
+ *	None.
+ *
+ * Users:
+ *	ReflectInput/Output(), to enable the signaling of EAGAIN
+ *	on 0-sized short reads/writes.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ErrnoReturn(ReflectedChannel *rcPtr, Tcl_Obj* resObj)
+{
+    int code;
+    Tcl_InterpState sr;		/* State of handler interp */
+
+    if (!rcPtr->interp) {
+	return 0;
+    }
+
+    sr = Tcl_SaveInterpState(rcPtr->interp, 0 /* Dummy */);
+    UnmarshallErrorResult(rcPtr->interp, resObj);
+
+    resObj = Tcl_GetObjResult(rcPtr->interp);
+
+    if (((Tcl_GetIntFromObj(rcPtr->interp, resObj, &code) != TCL_OK) || (code >= 0))) {
+	if (strcmp ("EAGAIN",Tcl_GetString(resObj)) == 0) {
+	    code = - EAGAIN;
+	} else {
+	    code = 0;
+	}
+    }
+
+    Tcl_RestoreInterpState(rcPtr->interp, sr);
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetReflectedChannelMap --
+ *
+ *	Gets and potentially initializes the reflected channel map for an
+ *	interpreter.
+ *
+ * Results:
+ *	A pointer to the map created, for use by the caller.
+ *
+ * Side effects:
+ *	Initializes the reflected channel map for an interpreter.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static ReflectedChannelMap *
+GetReflectedChannelMap(
+    Tcl_Interp *interp)
+{
+    ReflectedChannelMap* rcmPtr = Tcl_GetAssocData(interp, RCMKEY, NULL);
+
+    if (rcmPtr == NULL) {
+	rcmPtr = (ReflectedChannelMap *) ckalloc(sizeof(ReflectedChannelMap));
+	Tcl_InitHashTable(&rcmPtr->map, TCL_STRING_KEYS);
+	Tcl_SetAssocData(interp, RCMKEY,
+		(Tcl_InterpDeleteProc *) DeleteReflectedChannelMap, rcmPtr);
+    }
+    return rcmPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DeleteReflectedChannelMap --
+ *
+ *	Deletes the channel table for an interpreter, closing any open
+ *	channels whose refcount reaches zero. This procedure is invoked when
+ *	an interpreter is deleted, via the AssocData cleanup mechanism.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Deletes the hash table of channels. May close channels. May flush
+ *	output on closed channels. Removes any channeEvent handlers that were
+ *	registered in this interpreter.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DeleteReflectedChannelMap(
+    ClientData clientData,	/* The per-interpreter data structure. */
+    Tcl_Interp *interp)		/* The interpreter being deleted. */
+{
+    ReflectedChannelMap* rcmPtr; /* The map */
+    Tcl_HashSearch hSearch;	 /* Search variable. */
+    Tcl_HashEntry *hPtr;	 /* Search variable. */
+    ReflectedChannel* rcPtr;
+    Tcl_Channel chan;
+
+#ifdef TCL_THREADS
+    ForwardingResult *resultPtr;
+    ForwardingEvent *evPtr;
+    ForwardParam *paramPtr;
+#endif
+
+    /*
+     * Delete all entries. The channels may have been closed already, or will
+     * be closed later, by the standard IO finalization of an interpreter
+     * under destruction.  Except for the channels which were moved to a
+     * different interpreter and/or thread. They do not exist from the IO
+     * systems point of view and will not get closed. Therefore mark all as
+     * dead so that any future access will cause a proper error. For channels
+     * in a different thread we actually do the same as
+     * DeleteThreadReflectedChannelMap(), just restricted to the channels of
+     * this interp.
+     */
+
+    rcmPtr = clientData;
+    for (hPtr = Tcl_FirstHashEntry(&rcmPtr->map, &hSearch);
+	 hPtr != NULL;
+	 hPtr = Tcl_FirstHashEntry(&rcmPtr->map, &hSearch)) {
+
+	chan  = (Tcl_Channel) Tcl_GetHashValue (hPtr);
+	rcPtr = (ReflectedChannel *) Tcl_GetChannelInstanceData(chan);
+
+	rcPtr->interp = NULL;
+
+	Tcl_DeleteHashEntry(hPtr);
+    }
+    Tcl_DeleteHashTable(&rcmPtr->map);
+    ckfree((char *) &rcmPtr->map);
+
+#ifdef TCL_THREADS
+    /*
+     * The origin interpreter for one or more reflected channels is gone.
+     */
+
+    /*
+     * Go through the list of pending results and cancel all whose events were
+     * destined for this interpreter. While this is in progress we block any
+     * other access to the list of pending results.
+     */
+
+    Tcl_MutexLock(&rcForwardMutex);
+
+    for (resultPtr = forwardList;
+	 resultPtr != NULL;
+	 resultPtr = resultPtr->nextPtr) {
+	if (resultPtr->dsti != interp) {
+	    /* Ignore results/events for other interpreters. */
+	    continue;
+	}
+
+	/*
+	 * The receiver for the event exited, before processing the event. We
+	 * detach the result now, wake the originator up and signal failure.
+	 */
+
+	evPtr = resultPtr->evPtr;
+	paramPtr = evPtr->param;
+
+	evPtr->resultPtr = NULL;
+	resultPtr->evPtr = NULL;
+	resultPtr->result = TCL_ERROR;
+
+	ForwardSetStaticError(paramPtr, msg_send_dstlost);
+
+	Tcl_ConditionNotify(&resultPtr->done);
+    }
+
+    /*
+     * Get the map of all channels handled by the current thread. This is a
+     * ReflectedChannelMap, but on a per-thread basis, not per-interp. Go
+     * through the channels and remove all which were handled by this
+     * interpreter. They have already been marked as dead.
+     */
+
+    rcmPtr = GetThreadReflectedChannelMap();
+    for (hPtr = Tcl_FirstHashEntry(&rcmPtr->map, &hSearch);
+	 hPtr != NULL;
+	 hPtr = Tcl_NextHashEntry(&hSearch)) {
+
+	chan  = (Tcl_Channel) Tcl_GetHashValue (hPtr);
+	rcPtr = (ReflectedChannel *) Tcl_GetChannelInstanceData(chan);
+
+	if (rcPtr->interp != interp) {
+	    /* Ignore entries for other interpreters */
+	    continue;
+	}
+
+	Tcl_DeleteHashEntry(hPtr);
+    }
+
+    Tcl_MutexUnlock(&rcForwardMutex);
+#endif
+}
+
+#ifdef TCL_THREADS
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetThreadReflectedChannelMap --
+ *
+ *	Gets and potentially initializes the reflected channel map for a
+ *	thread.
+ *
+ * Results:
+ *	A pointer to the map created, for use by the caller.
+ *
+ * Side effects:
+ *	Initializes the reflected channel map for a thread.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static ReflectedChannelMap *
+GetThreadReflectedChannelMap()
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    if (!tsdPtr->rcmPtr) {
+	tsdPtr->rcmPtr = (ReflectedChannelMap *) ckalloc(sizeof(ReflectedChannelMap));
+	Tcl_InitHashTable(&tsdPtr->rcmPtr->map, TCL_STRING_KEYS);
+	Tcl_CreateThreadExitHandler(DeleteThreadReflectedChannelMap, NULL);
+    }
+
+    return tsdPtr->rcmPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DeleteThreadReflectedChannelMap --
+ *
+ *	Deletes the channel table for a thread. This procedure is invoked when
+ *	a thread is deleted. The channels have already been marked as dead, in
+ *      DeleteReflectedChannelMap().
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Deletes the hash table of channels.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DeleteThreadReflectedChannelMap(
+    ClientData clientData)	/* The per-thread data structure. */
+{
+    Tcl_HashSearch hSearch;	 /* Search variable. */
+    Tcl_HashEntry *hPtr;	 /* Search variable. */
+    Tcl_ThreadId self = Tcl_GetCurrentThread();
+
+    ReflectedChannelMap* rcmPtr; /* The map */
+    Tcl_Channel chan;
+    ReflectedChannel* rcPtr;
+    ForwardingResult *resultPtr;
+    ForwardingEvent *evPtr;
+    ForwardParam *paramPtr;
+
+    /*
+     * The origin thread for one or more reflected channels is gone.
+     * NOTE: If this function is called due to a thread getting killed the
+     *       per-interp DeleteReflectedChannelMap is apparently not called.
+     */
+
+    /*
+     * Go through the list of pending results and cancel all whose events were
+     * destined for this thread. While this is in progress we block any
+     * other access to the list of pending results.
+     */
+
+    Tcl_MutexLock(&rcForwardMutex);
+
+    for (resultPtr = forwardList;
+	 resultPtr != NULL;
+	 resultPtr = resultPtr->nextPtr) {
+	if (resultPtr->dst != self) {
+	    /* Ignore results/events for other threads. */
+	    continue;
+	}
+
+	/*
+	 * The receiver for the event exited, before processing the event. We
+	 * detach the result now, wake the originator up and signal failure.
+	 */
+
+	evPtr = resultPtr->evPtr;
+	paramPtr = evPtr->param;
+
+	evPtr->resultPtr = NULL;
+	resultPtr->evPtr = NULL;
+	resultPtr->result = TCL_ERROR;
+
+	ForwardSetStaticError(paramPtr, msg_send_dstlost);
+
+	Tcl_ConditionNotify(&resultPtr->done);
+    }
+
+    /*
+     * Get the map of all channels handled by the current thread. This is a
+     * ReflectedChannelMap, but on a per-thread basis, not per-interp. Go
+     * through the channels, remove all, mark them as dead.
+     */
+
+    rcmPtr = GetThreadReflectedChannelMap();
+    for (hPtr = Tcl_FirstHashEntry(&rcmPtr->map, &hSearch);
+	 hPtr != NULL;
+	 hPtr = Tcl_FirstHashEntry(&rcmPtr->map, &hSearch)) {
+
+	chan  = (Tcl_Channel) Tcl_GetHashValue (hPtr);
+	rcPtr = (ReflectedChannel *) Tcl_GetChannelInstanceData(chan);
+
+	rcPtr->interp = NULL;
+
+	Tcl_DeleteHashEntry(hPtr);
+    }
+
+    Tcl_MutexUnlock(&rcForwardMutex);
+}
+
+static void
+ForwardOpToOwnerThread(
+    ReflectedChannel *rcPtr,	/* Channel instance */
+    ForwardedOperation op,	/* Forwarded driver operation */
+    const VOID *param)		/* Arguments */
+{
+    Tcl_ThreadId dst = rcPtr->thread;
+    ForwardingEvent *evPtr;
+    ForwardingResult *resultPtr;
+
+    /*
+     * We gather the lock early. This allows us to check the liveness of the
+     * channel without interference from DeleteThreadReflectedChannelMap().
+     */
+
+    Tcl_MutexLock(&rcForwardMutex);
+
+    if (rcPtr->interp == NULL) {
+	/*
+	 * The channel is marked as dead. Bail out immediately, with an
+	 * appropriate error. Do not forget to unlock the mutex on this path.
+	 */
+
+	ForwardSetStaticError((ForwardParam *)param, msg_send_dstlost);
+	Tcl_MutexUnlock(&rcForwardMutex);
+	return;
+    }
+
+    /*
+     * Create and initialize the event and data structures.
+     */
+
+    evPtr = (ForwardingEvent *) ckalloc(sizeof(ForwardingEvent));
+    resultPtr = (ForwardingResult *) ckalloc(sizeof(ForwardingResult));
+
+    evPtr->event.proc = ForwardProc;
+    evPtr->resultPtr = resultPtr;
+    evPtr->op = op;
+    evPtr->rcPtr = rcPtr;
+    evPtr->param = (ForwardParam *) param;
+
+    resultPtr->src  = Tcl_GetCurrentThread();
+    resultPtr->dst  = dst;
+    resultPtr->dsti = rcPtr->interp;
+    resultPtr->done = NULL;
+    resultPtr->result = -1;
+    resultPtr->evPtr = evPtr;
+
+    /*
+     * Now execute the forward.
+     */
+
+    TclSpliceIn(resultPtr, forwardList);
+    /* Do not unlock here. That is done by the ConditionWait */
+
+    /*
+     * Ensure cleanup of the event if the origin thread exits while this event
+     * is pending or in progress. Exitus of the destination thread is handled
+     * by DeleteThreadReflectionChannelMap(), this is set up by
+     * GetThreadReflectedChannelMap().  This is what we use the 'forwardList'
+     * (see above) for.
+     */
+
+    Tcl_CreateThreadExitHandler(SrcExitProc, (ClientData) evPtr);
+
+    /*
+     * Queue the event and poke the other thread's notifier.
+     */
+
+    Tcl_ThreadQueueEvent(dst, (Tcl_Event *)evPtr, TCL_QUEUE_TAIL);
+    Tcl_ThreadAlert(dst);
+
+    /*
+     * (*) Block until the other thread has either processed the transfer or
+     * rejected it.
+     */
+
+    while (resultPtr->result < 0) {
+	/*
+	 * NOTE (1): Is it possible that the current thread goes away while
+	 * waiting here? IOW Is it possible that "SrcExitProc" is called while
+	 * we are here? See complementary note (2) in "SrcExitProc"
+	 *
+	 * The ConditionWait unlocks the mutex during the wait and relocks it
+	 * immediately after.
+	 */
+
+	Tcl_ConditionWait(&resultPtr->done, &rcForwardMutex, NULL);
+    }
+
+    /*
+     * Unlink result from the forwarder list.
+     * No need to lock. Either still locked, or locked by the ConditionWait
+     */
+
+    TclSpliceOut(resultPtr, forwardList);
+
+    resultPtr->nextPtr = NULL;
+    resultPtr->prevPtr = NULL;
+
+    Tcl_MutexUnlock(&rcForwardMutex);
+    Tcl_ConditionFinalize(&resultPtr->done);
+
+    /*
+     * Kill the cleanup handler now, and the result structure as well, before
+     * returning the success code.
+     *
+     * Note: The event structure has already been deleted.
+     */
+
+    Tcl_DeleteThreadExitHandler(SrcExitProc, (ClientData) evPtr);
+
+    ckfree((char*) resultPtr);
+}
+
+static int
+ForwardProc(
+    Tcl_Event *evGPtr,
+    int mask)
+{
+    /*
+     * Notes regarding access to the referenced data.
+     *
+     * In principle the data belongs to the originating thread (see
+     * evPtr->src), however this thread is currently blocked at (*), i.e.
+     * quiescent. Because of this we can treat the data as belonging to us,
+     * without fear of race conditions. I.e. we can read and write as we like.
+     *
+     * The only thing we cannot be sure of is the resultPtr. This can be be
+     * NULLed if the originating thread went away while the event is handled
+     * here now.
+     */
+
+    ForwardingEvent *evPtr = (ForwardingEvent *) evGPtr;
+    ForwardingResult *resultPtr = evPtr->resultPtr;
+    ReflectedChannel *rcPtr = evPtr->rcPtr;
+    Tcl_Interp *interp = rcPtr->interp;
+    ForwardParam *paramPtr = evPtr->param;
+    Tcl_Obj *resObj = NULL;	/* Interp result of InvokeTclMethod */
+    ReflectedChannelMap* rcmPtr; /* Map of reflected channels with handlers in this interp */
+    Tcl_HashEntry* hPtr;         /* Entry in the above map */
+
+    /*
+     * Ignore the event if no one is waiting for its result anymore.
+     */
+
+    if (!resultPtr) {
+	return 1;
+    }
+
+    paramPtr->base.code = TCL_OK;
+    paramPtr->base.msgStr = NULL;
+    paramPtr->base.mustFree = 0;
+
+    switch (evPtr->op) {
+	/*
+	 * The destination thread for the following operations is
+	 * rcPtr->thread, which contains rcPtr->interp, the interp we have to
+	 * call upon for the driver.
+	 */
+
+    case ForwardedClose:
+	/*
+	 * No parameters/results.
+	 */
+
+	if (InvokeTclMethod(rcPtr, "finalize", NULL, NULL, &resObj)!=TCL_OK) {
+	    ForwardSetObjError(paramPtr, resObj);
+	}
+
+	/*
+	 * Freeing is done here, in the origin thread, because the argv[]
+	 * objects belong to this thread. Deallocating them in a different
+	 * thread is not allowed
+	 *
+	 * We remove the channel from both interpreter and thread maps before
+	 * releasing the memory, to prevent future accesses (like by
+	 * 'postevent') from finding and dereferencing a dangling pointer.
+	 */
+
+	rcmPtr = GetReflectedChannelMap (interp);
+	hPtr = Tcl_FindHashEntry (&rcmPtr->map, 
+				  Tcl_GetChannelName (rcPtr->chan));
+	Tcl_DeleteHashEntry (hPtr);
+
+        rcmPtr = GetThreadReflectedChannelMap();
+	hPtr = Tcl_FindHashEntry (&rcmPtr->map, 
+				  Tcl_GetChannelName (rcPtr->chan));
+	Tcl_DeleteHashEntry (hPtr);
+
+        Tcl_EventuallyFree (rcPtr, (Tcl_FreeProc *) FreeReflectedChannel);
+	break;
+
+    case ForwardedInput: {
+	Tcl_Obj *toReadObj = Tcl_NewIntObj(paramPtr->input.toRead);
+        Tcl_IncrRefCount(toReadObj);
+
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "read", toReadObj, NULL, &resObj)!=TCL_OK){
+	    int code = ErrnoReturn (rcPtr, resObj);
+
+	    if (code < 0) {
+		paramPtr->base.code = code;
+	    } else {
+		ForwardSetObjError(paramPtr, resObj);
+	    }
+	    paramPtr->input.toRead = -1;
+	} else {
+	    /*
+	     * Process a regular result.
+	     */
+
+	    int bytec;			/* Number of returned bytes */
+	    unsigned char *bytev;	/* Array of returned bytes */
+
+	    bytev = Tcl_GetByteArrayFromObj(resObj, &bytec);
+
+	    if (paramPtr->input.toRead < bytec) {
+		ForwardSetStaticError(paramPtr, msg_read_toomuch);
+		paramPtr->input.toRead = -1;
+	    } else {
+		if (bytec > 0) {
+		    memcpy(paramPtr->input.buf, bytev, (size_t)bytec);
+		}
+		paramPtr->input.toRead = bytec;
+	    }
+	}
+        Tcl_Release(rcPtr);
+        Tcl_DecrRefCount(toReadObj);
+	break;
+    }
+
+    case ForwardedOutput: {
+	Tcl_Obj *bufObj = Tcl_NewByteArrayObj((unsigned char *)
+		paramPtr->output.buf, paramPtr->output.toWrite);
+        Tcl_IncrRefCount(bufObj);
+
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "write", bufObj, NULL, &resObj) != TCL_OK) {
+	    int code = ErrnoReturn(rcPtr, resObj);
+
+	    if (code < 0) {
+		paramPtr->base.code = code;
+	    } else {
+		ForwardSetObjError(paramPtr, resObj);
+	    }
+	    paramPtr->output.toWrite = -1;
+	} else {
+	    /*
+	     * Process a regular result.
+	     */
+
+	    int written;
+
+	    if (Tcl_GetIntFromObj(interp, resObj, &written) != TCL_OK) {
+		ForwardSetObjError(paramPtr, MarshallError(interp));
+		paramPtr->output.toWrite = -1;
+	    } else if (written==0 || paramPtr->output.toWrite<written) {
+		ForwardSetStaticError(paramPtr, msg_write_toomuch);
+		paramPtr->output.toWrite = -1;
+	    } else {
+		paramPtr->output.toWrite = written;
+	    }
+	}
+        Tcl_Release(rcPtr);
+        Tcl_DecrRefCount(bufObj);
+	break;
+    }
+
+    case ForwardedSeek: {
+	Tcl_Obj *offObj = Tcl_NewWideIntObj(paramPtr->seek.offset);
+	Tcl_Obj *baseObj = Tcl_NewStringObj(
+		(paramPtr->seek.seekMode==SEEK_SET) ? "start" :
+		(paramPtr->seek.seekMode==SEEK_CUR) ? "current" : "end", -1);
+
+        Tcl_IncrRefCount(offObj);
+        Tcl_IncrRefCount(baseObj);
+
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "seek", offObj, baseObj, &resObj)!=TCL_OK){
+	    ForwardSetObjError(paramPtr, resObj);
+	    paramPtr->seek.offset = -1;
+	} else {
+	    /*
+	     * Process a regular result. If the type is wrong this may change
+	     * into an error.
+	     */
+
+	    Tcl_WideInt newLoc;
+
+	    if (Tcl_GetWideIntFromObj(interp, resObj, &newLoc) == TCL_OK) {
+		if (newLoc < Tcl_LongAsWide(0)) {
+		    ForwardSetStaticError(paramPtr, msg_seek_beforestart);
+		    paramPtr->seek.offset = -1;
+		} else {
+		    paramPtr->seek.offset = newLoc;
+		}
+	    } else {
+		ForwardSetObjError(paramPtr, MarshallError(interp));
+		paramPtr->seek.offset = -1;
+	    }
+	}
+        Tcl_Release(rcPtr);
+        Tcl_DecrRefCount(offObj);
+        Tcl_DecrRefCount(baseObj);
+	break;
+    }
+
+    case ForwardedWatch: {
+	Tcl_Obj *maskObj = DecodeEventMask(paramPtr->watch.mask);
+        /* assert maskObj.refCount == 1 */
+
+        Tcl_Preserve(rcPtr);
+	(void) InvokeTclMethod(rcPtr, "watch", maskObj, NULL, NULL);
+	Tcl_DecrRefCount(maskObj);
+        Tcl_Release(rcPtr);
+	break;
+    }
+
+    case ForwardedBlock: {
+	Tcl_Obj *blockObj = Tcl_NewBooleanObj(!paramPtr->block.nonblocking);
+        Tcl_IncrRefCount(blockObj);
+
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "blocking", blockObj, NULL,
+		&resObj) != TCL_OK) {
+	    ForwardSetObjError(paramPtr, resObj);
+	}
+        Tcl_Release(rcPtr);
+        Tcl_DecrRefCount(blockObj);
+	break;
+    }
+
+    case ForwardedSetOpt: {
+	Tcl_Obj *optionObj = Tcl_NewStringObj(paramPtr->setOpt.name, -1);
+	Tcl_Obj *valueObj = Tcl_NewStringObj(paramPtr->setOpt.value, -1);
+
+        Tcl_IncrRefCount(optionObj);
+        Tcl_IncrRefCount(valueObj);
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "configure", optionObj, valueObj,
+		&resObj) != TCL_OK) {
+	    ForwardSetObjError(paramPtr, resObj);
+	}
+        Tcl_Release(rcPtr);
+        Tcl_DecrRefCount(optionObj);
+        Tcl_DecrRefCount(valueObj);
+	break;
+    }
+
+    case ForwardedGetOpt: {
+	/*
+	 * Retrieve the value of one option.
+	 */
+
+	Tcl_Obj *optionObj = Tcl_NewStringObj(paramPtr->getOpt.name, -1);
+        Tcl_IncrRefCount(optionObj);
+
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "cget", optionObj, NULL, &resObj)!=TCL_OK){
+	    ForwardSetObjError(paramPtr, resObj);
+	} else {
+	    Tcl_DStringAppend(paramPtr->getOpt.value,
+		    TclGetString(resObj), -1);
+	}
+        Tcl_Release(rcPtr);
+        Tcl_DecrRefCount(optionObj);
+	break;
+    }
+
+    case ForwardedGetOptAll:
+	/*
+	 * Retrieve all options.
+	 */
+
+        Tcl_Preserve(rcPtr);
+	if (InvokeTclMethod(rcPtr, "cgetall", NULL, NULL, &resObj) != TCL_OK){
+	    ForwardSetObjError(paramPtr, resObj);
+	} else {
+	    /*
+	     * Extract list, validate that it is a list, and #elements. See
+	     * NOTE (4) as well.
+	     */
+
+	    int listc;
+	    Tcl_Obj **listv;
+
+	    if (Tcl_ListObjGetElements(interp, resObj, &listc,
+		    &listv) != TCL_OK) {
+		ForwardSetObjError(paramPtr, MarshallError(interp));
+	    } else if ((listc % 2) == 1) {
+		/*
+		 * Odd number of elements is wrong. [x].
+		 */
+
+		char *buf = ckalloc(200);
+		sprintf(buf,
+			"{Expected list with even number of elements, got %d %s instead}",
+			listc, (listc == 1 ? "element" : "elements"));
+
+		ForwardSetDynamicError(paramPtr, buf);
+	    } else {
+		int len;
+		const char *str = Tcl_GetStringFromObj(resObj, &len);
+
+		if (len) {
+		    Tcl_DStringAppend(paramPtr->getOpt.value, " ", 1);
+		    Tcl_DStringAppend(paramPtr->getOpt.value, str, len);
+		}
+	    }
+	}
+        Tcl_Release(rcPtr);
+	break;
+
+    default:
+	/*
+	 * Bad operation code.
+	 */
+
+	Tcl_Panic("Bad operation code in ForwardProc");
+	break;
+    }
+
+    /*
+     * Remove the reference we held on the result of the invoke, if we had
+     * such.
+     */
+
+    if (resObj != NULL) {
+	Tcl_DecrRefCount(resObj);
+    }
+
+    if (resultPtr) {
+	/*
+	 * Report the forwarding result synchronously to the waiting caller.
+	 * This unblocks (*) as well. This is wrapped into a conditional
+	 * because the caller may have exited in the mean time.
+	 */
+
+	Tcl_MutexLock(&rcForwardMutex);
+	resultPtr->result = TCL_OK;
+	Tcl_ConditionNotify(&resultPtr->done);
+	Tcl_MutexUnlock(&rcForwardMutex);
+    }
+
+    return 1;
+}
+
+static void
+SrcExitProc(
+    ClientData clientData)
+{
+    ForwardingEvent *evPtr = (ForwardingEvent *) clientData;
+    ForwardingResult *resultPtr;
+    ForwardParam *paramPtr;
+
+    /*
+     * NOTE (2): Can this handler be called with the originator blocked?
+     */
+
+    /*
+     * The originator for the event exited. It is not sure if this can happen,
+     * as the originator should be blocked at (*) while the event is in
+     * transit/pending.
+     *
+     * We make sure that the event cannot refer to the result anymore, remove
+     * it from the list of pending results and free the structure. Locking the
+     * access ensures that we cannot get in conflict with "ForwardProc",
+     * should it already execute the event.
+     */
+
+    Tcl_MutexLock(&rcForwardMutex);
+
+    resultPtr = evPtr->resultPtr;
+    paramPtr = evPtr->param;
+
+    evPtr->resultPtr = NULL;
+    resultPtr->evPtr = NULL;
+    resultPtr->result = TCL_ERROR;
+
+    ForwardSetStaticError(paramPtr, msg_send_originlost);
+
+    /*
+     * See below: TclSpliceOut(resultPtr, forwardList);
+     */
+
+    Tcl_MutexUnlock(&rcForwardMutex);
+
+    /*
+     * This unlocks (*). The structure will be spliced out and freed by
+     * "ForwardProc". Maybe.
+     */
+
+    Tcl_ConditionNotify(&resultPtr->done);
+}
+
+static void
+ForwardSetObjError(
+    ForwardParam *paramPtr,
+    Tcl_Obj *obj)
+{
+    int len;
+    const char *msgStr = Tcl_GetStringFromObj(obj, &len);
+
+    len++;
+    ForwardSetDynamicError(paramPtr, ckalloc((unsigned) len));
+    memcpy(paramPtr->base.msgStr, msgStr, (unsigned) len);
+}
+#endif
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/generic/tclIOSock.c b/generic/tclIOSock.c
index 251780c..97dec06 100644
--- a/generic/tclIOSock.c
+++ b/generic/tclIOSock.c
@@ -1,30 +1,28 @@
-/* 
+/*
  * tclIOSock.c --
  *
  *	Common routines used by all socket based channel types.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
  *---------------------------------------------------------------------------
  *
  * TclSockGetPort --
  *
- *	Maps from a string, which could be a service name, to a port.
- *	Used by socket creation code to get port numbers and resolve
- *	registered service names to port numbers.
+ *	Maps from a string, which could be a service name, to a port. Used by
+ *	socket creation code to get port numbers and resolve registered
+ *	service names to port numbers.
  *
  * Results:
- *	A standard Tcl result.  On success, the port number is returned
- *	in portPtr. On failure, an error message is left in the interp's
- *	result.
+ *	A standard Tcl result. On success, the port number is returned in
+ *	portPtr. On failure, an error message is left in the interp's result.
  *
  * Side effects:
  *	None.
@@ -33,21 +31,21 @@
  */
 
 int
-TclSockGetPort(interp, string, proto, portPtr)
-    Tcl_Interp *interp;
-    char *string;		/* Integer or service name */
-    char *proto;		/* "tcp" or "udp", typically */
-    int *portPtr;		/* Return port number */
+TclSockGetPort(
+    Tcl_Interp *interp,
+    const char *string, /* Integer or service name */
+    const char *proto, /* "tcp" or "udp", typically */
+    int *portPtr)		/* Return port number */
 {
     struct servent *sp;		/* Protocol info for named services */
     Tcl_DString ds;
-    CONST char *native;
+    const char *native;
 
     if (Tcl_GetInt(NULL, string, portPtr) != TCL_OK) {
 	/*
 	 * Don't bother translating 'proto' to native.
 	 */
-	 
+
 	native = Tcl_UtfToExternalDString(NULL, string, -1, &ds);
 	sp = getservbyname(native, proto);		/* INTL: Native. */
 	Tcl_DStringFree(&ds);
@@ -60,8 +58,8 @@ TclSockGetPort(interp, string, proto, portPtr)
 	return TCL_ERROR;
     }
     if (*portPtr > 0xFFFF) {
-        Tcl_AppendResult(interp, "couldn't open socket: port number too high",
-                (char *) NULL);
+	Tcl_AppendResult(interp, "couldn't open socket: port number too high",
+		NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -89,9 +87,9 @@ TclSockGetPort(interp, string, proto, portPtr)
 #endif
 
 int
-TclSockMinimumBuffers(sock, size)
-    void *sock;			/* Socket file descriptor */
-    int size;			/* Minimum buffer size */
+TclSockMinimumBuffers(
+    void *sock,			/* Socket file descriptor */
+    int size)			/* Minimum buffer size */
 {
     int current;
     socklen_t len;
@@ -110,3 +108,11 @@ TclSockMinimumBuffers(sock, size)
     }
     return TCL_OK;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclIOUtil.c b/generic/tclIOUtil.c
index 105c038..295e313 100644
--- a/generic/tclIOUtil.c
+++ b/generic/tclIOUtil.c
@@ -1,182 +1,144 @@
-/* 
+/*
  * tclIOUtil.c --
  *
- *	This file contains the implementation of Tcl's generic
- *	filesystem code, which supports a pluggable filesystem
- *	architecture allowing both platform specific filesystems and
- *	'virtual filesystems'.  All filesystem access should go through
- *	the functions defined in this file.  Most of this code was
- *	contributed by Vince Darley.
+ *	This file contains the implementation of Tcl's generic filesystem
+ *	code, which supports a pluggable filesystem architecture allowing both
+ *	platform specific filesystems and 'virtual filesystems'. All
+ *	filesystem access should go through the functions defined in this
+ *	file. Most of this code was contributed by Vince Darley.
  *
- *	Parts of this file are based on code contributed by Karl
- *	Lehenbauer, Mark Diekhans and Peter da Silva.
+ *	Parts of this file are based on code contributed by Karl Lehenbauer,
+ *	Mark Diekhans and Peter da Silva.
  *
  * Copyright (c) 1991-1994 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ * Copyright (c) 2001-2004 Vincent Darley.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#ifndef _WIN64
-/* See [Bug 3354324]: file mtime sets wrong time */
-#   define _USE_32BIT_TIME_T
-#endif
-
-#include <sys/stat.h>
 #include "tclInt.h"
-#include "tclPort.h"
 #ifdef __WIN32__
-/* for tclWinProcs->useWide */
-#include "tclWinInt.h"
+#   include "tclWinInt.h"
 #endif
+#include "tclFileSystem.h"
 
-/* 
+/*
  * struct FilesystemRecord --
- * 
- * A filesystem record is used to keep track of each
- * filesystem currently registered with the core,
- * in a linked list.  Pointers to these structures
- * are also kept by each "path" Tcl_Obj, and we must
- * retain a refCount on the number of such references.
+ *
+ * A filesystem record is used to keep track of each filesystem currently
+ * registered with the core, in a linked list.
  */
+
 typedef struct FilesystemRecord {
-    ClientData	     clientData;  /* Client specific data for the new
-				   * filesystem (can be NULL) */
-    Tcl_Filesystem *fsPtr;        /* Pointer to filesystem dispatch
-				   * table. */
-    int fileRefCount;             /* How many Tcl_Obj's use this
-				   * filesystem. */
-    struct FilesystemRecord *nextPtr;  
-				  /* The next filesystem registered
-				   * to Tcl, or NULL if no more. */
-    struct FilesystemRecord *prevPtr;  
-				  /* The previous filesystem registered
-				   * to Tcl, or NULL if no more. */
+    ClientData clientData;	/* Client specific data for the new filesystem
+				 * (can be NULL) */
+    Tcl_Filesystem *fsPtr;	/* Pointer to filesystem dispatch table. */
+    struct FilesystemRecord *nextPtr;
+				/* The next filesystem registered to Tcl, or
+				 * NULL if no more. */
+    struct FilesystemRecord *prevPtr;
+				/* The previous filesystem registered to Tcl,
+				 * or NULL if no more. */
 } FilesystemRecord;
 
-/* 
- * The internal TclFS API provides routines for handling and
- * manipulating paths efficiently, taking direct advantage of
- * the "path" Tcl_Obj type.
- * 
- * These functions are not exported at all at present.
+/*
+ * This structure holds per-thread private copy of the current directory
+ * maintained by the global cwdPathPtr. This structure holds per-thread
+ * private copies of some global data. This way we avoid most of the
+ * synchronization calls which boosts performance, at cost of having to update
+ * this information each time the corresponding epoch counter changes.
  */
 
-int      TclFSCwdPointerEquals _ANSI_ARGS_((Tcl_Obj* objPtr));
-int	 TclFSMakePathFromNormalized _ANSI_ARGS_((Tcl_Interp *interp, 
-		Tcl_Obj *objPtr));
-int      TclFSNormalizeToUniquePath _ANSI_ARGS_((Tcl_Interp *interp, 
-		Tcl_Obj *pathPtr, int startAt));
-Tcl_Obj* TclFSMakePathRelative _ANSI_ARGS_((Tcl_Interp *interp, 
-		Tcl_Obj *objPtr, Tcl_Obj *cwdPtr));
-Tcl_Obj* TclFSInternalToNormalized _ANSI_ARGS_((
-		Tcl_Filesystem *fromFilesystem, ClientData clientData,
-		FilesystemRecord **fsRecPtrPtr));
-int      TclFSEnsureEpochOk _ANSI_ARGS_((Tcl_Obj* pathObjPtr,
-		Tcl_Filesystem **fsPtrPtr));
-void     TclFSSetPathDetails _ANSI_ARGS_((Tcl_Obj *pathObjPtr, 
-		FilesystemRecord *fsRecPtr, ClientData clientData)); 
-
-/* 
- * Private variables for use in this file
- */
-extern Tcl_Filesystem tclNativeFilesystem;
-extern int theFilesystemEpoch;
+typedef struct ThreadSpecificData {
+    int initialized;
+    int cwdPathEpoch;
+    int filesystemEpoch;
+    Tcl_Obj *cwdPathPtr;
+    ClientData cwdClientData;
+    FilesystemRecord *filesystemList;
+    int claims;
+} ThreadSpecificData;
 
-/* 
- * Private functions for use in this file
- */
-static Tcl_PathType     FSGetPathType  _ANSI_ARGS_((Tcl_Obj *pathObjPtr, 
-			    Tcl_Filesystem **filesystemPtrPtr, 
-			    int *driveNameLengthPtr));
-static Tcl_PathType     GetPathType  _ANSI_ARGS_((Tcl_Obj *pathObjPtr, 
-			    Tcl_Filesystem **filesystemPtrPtr, 
-			    int *driveNameLengthPtr, Tcl_Obj **driveNameRef));
-static Tcl_FSPathInFilesystemProc NativePathInFilesystem;
-static Tcl_Obj*  TclFSNormalizeAbsolutePath 
-			    _ANSI_ARGS_((Tcl_Interp* interp, Tcl_Obj *pathPtr));
 /*
- * Prototypes for procedures defined later in this file.
+ * Prototypes for functions defined later in this file.
  */
 
-static FilesystemRecord* FsGetFirstFilesystem(void);
-static void FsThrExitProc(ClientData cd);
-static Tcl_Obj* FsListMounts          _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-						   CONST char *pattern));
-static Tcl_Obj* FsAddMountsToGlobResult  _ANSI_ARGS_((Tcl_Obj *result, 
-	   Tcl_Obj *pathPtr, CONST char *pattern, Tcl_GlobTypeData *types));
+static FilesystemRecord*FsGetFirstFilesystem(void);
+static void		FsThrExitProc(ClientData cd);
+static Tcl_Obj *	FsListMounts(Tcl_Obj *pathPtr, const char *pattern);
+static void		FsAddMountsToGlobResult(Tcl_Obj *resultPtr,
+			    Tcl_Obj *pathPtr, const char *pattern,
+			    Tcl_GlobTypeData *types);
+static void		FsUpdateCwd(Tcl_Obj *cwdObj, ClientData clientData);
 
-#ifdef TCL_THREADS
-static void FsRecacheFilesystemList(void);
-#endif
+static void		FsRecacheFilesystemList(void);
+static void		Claim(void);
+static void		Disclaim(void);
 
-/* 
- * These form part of the native filesystem support.  They are needed
- * here because we have a few native filesystem functions (which are
- * the same for mac/win/unix) in this file.  There is no need to place
- * them in tclInt.h, because they are not (and should not be) used
- * anywhere else.
+
+/*
+ * These form part of the native filesystem support. They are needed here
+ * because we have a few native filesystem functions (which are the same for
+ * win/unix) in this file. There is no need to place them in tclInt.h, because
+ * they are not (and should not be) used anywhere else.
  */
-extern CONST char *		tclpFileAttrStrings[];
-extern CONST TclFileAttrProcs	tclpFileAttrProcs[];
 
-/* 
- * The following functions are obsolete string based APIs, and should
- * be removed in a future release (Tcl 9 would be a good time).
+MODULE_SCOPE const char *		tclpFileAttrStrings[];
+MODULE_SCOPE const TclFileAttrProcs	tclpFileAttrProcs[];
+
+/*
+ * The following functions are obsolete string based APIs, and should be
+ * removed in a future release (Tcl 9 would be a good time).
  */
+
 
 /* Obsolete */
 int
-Tcl_Stat(path, oldStyleBuf)
-    CONST char *path;		/* Path of file to stat (in current CP). */
-    struct stat *oldStyleBuf;	/* Filled with results of stat call. */
+Tcl_Stat(
+    const char *path,		/* Path of file to stat (in current CP). */
+    struct stat *oldStyleBuf)	/* Filled with results of stat call. */
 {
     int ret;
     Tcl_StatBuf buf;
-    Tcl_Obj *pathPtr = Tcl_NewStringObj(path,-1);
+    Tcl_Obj *pathPtr = Tcl_NewStringObj(path, -1);
 
     Tcl_IncrRefCount(pathPtr);
     ret = Tcl_FSStat(pathPtr, &buf);
     Tcl_DecrRefCount(pathPtr);
     if (ret != -1) {
 #ifndef TCL_WIDE_INT_IS_LONG
-#   define OUT_OF_RANGE(x) \
+	Tcl_WideInt tmp1, tmp2, tmp3 = 0;
+# define OUT_OF_RANGE(x) \
 	(((Tcl_WideInt)(x)) < Tcl_LongAsWide(LONG_MIN) || \
 	 ((Tcl_WideInt)(x)) > Tcl_LongAsWide(LONG_MAX))
-#if defined(__GNUC__) && __GNUC__ >= 2
-/*
- * Workaround gcc warning of "comparison is always false due to limited range of
- * data type" in this macro by checking max type size, and when necessary ANDing
- * with the complement of ULONG_MAX instead of the comparison:
- */
-#   define OUT_OF_URANGE(x) \
-	((((Tcl_WideUInt)(~ (__typeof__(x)) 0)) > (Tcl_WideUInt)ULONG_MAX) && \
-	 (((Tcl_WideUInt)(x)) & ~(Tcl_WideUInt)ULONG_MAX))
-#else
-#   define OUT_OF_URANGE(x) \
-	(((Tcl_WideUInt)(x)) > (Tcl_WideUInt)ULONG_MAX)
-#endif
+# define OUT_OF_URANGE(x) \
+	(((Tcl_WideUInt)(x)) > ((Tcl_WideUInt)ULONG_MAX))
 
 	/*
 	 * Perform the result-buffer overflow check manually.
 	 *
 	 * Note that ino_t/ino64_t is unsigned...
+	 *
+	 * Workaround gcc warning of "comparison is always false due to
+	 * limited range of data type" by assigning to tmp var of type
+	 * Tcl_WideInt.
 	 */
 
-        if (OUT_OF_URANGE(buf.st_ino) || OUT_OF_RANGE(buf.st_size)
-#ifdef HAVE_ST_BLOCKS
-		|| OUT_OF_RANGE(buf.st_blocks)
+        tmp1 = (Tcl_WideInt) buf.st_ino;
+        tmp2 = (Tcl_WideInt) buf.st_size;
+#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
+        tmp3 = (Tcl_WideInt) buf.st_blocks;
 #endif
-	    ) {
-#ifdef EFBIG
+
+	if (OUT_OF_URANGE(tmp1) || OUT_OF_RANGE(tmp2) || OUT_OF_RANGE(tmp3)) {
+#if defined(EFBIG)
 	    errno = EFBIG;
-#else
-#  ifdef EOVERFLOW
+#elif defined(EOVERFLOW)
 	    errno = EOVERFLOW;
-#  else
-#    error  "What status should be returned for file size out of range?"
-#  endif
+#else
+#error "What status should be returned for file size out of range?"
 #endif
 	    return -1;
 	}
@@ -186,27 +148,33 @@ Tcl_Stat(path, oldStyleBuf)
 #endif /* !TCL_WIDE_INT_IS_LONG */
 
 	/*
-	 * Copy across all supported fields, with possible type
-	 * coercions on those fields that change between the normal
-	 * and lf64 versions of the stat structure (on Solaris at
-	 * least.)  This is slow when the structure sizes coincide,
-	 * but that's what you get for using an obsolete interface.
+	 * Copy across all supported fields, with possible type coercions on
+	 * those fields that change between the normal and lf64 versions of
+	 * the stat structure (on Solaris at least). This is slow when the
+	 * structure sizes coincide, but that's what you get for using an
+	 * obsolete interface.
 	 */
 
-	oldStyleBuf->st_mode    = buf.st_mode;
-	oldStyleBuf->st_ino     = (ino_t) buf.st_ino;
-	oldStyleBuf->st_dev     = buf.st_dev;
-	oldStyleBuf->st_rdev    = buf.st_rdev;
-	oldStyleBuf->st_nlink   = buf.st_nlink;
-	oldStyleBuf->st_uid     = buf.st_uid;
-	oldStyleBuf->st_gid     = buf.st_gid;
-	oldStyleBuf->st_size    = (off_t) buf.st_size;
-	oldStyleBuf->st_atime   = buf.st_atime;
-	oldStyleBuf->st_mtime   = buf.st_mtime;
-	oldStyleBuf->st_ctime   = buf.st_ctime;
-#ifdef HAVE_ST_BLOCKS
-	oldStyleBuf->st_blksize = buf.st_blksize;
-	oldStyleBuf->st_blocks  = (blkcnt_t) buf.st_blocks;
+	oldStyleBuf->st_mode	= buf.st_mode;
+	oldStyleBuf->st_ino	= (ino_t) buf.st_ino;
+	oldStyleBuf->st_dev	= buf.st_dev;
+	oldStyleBuf->st_rdev	= buf.st_rdev;
+	oldStyleBuf->st_nlink	= buf.st_nlink;
+	oldStyleBuf->st_uid	= buf.st_uid;
+	oldStyleBuf->st_gid	= buf.st_gid;
+	oldStyleBuf->st_size	= (off_t) buf.st_size;
+	oldStyleBuf->st_atime	= buf.st_atime;
+	oldStyleBuf->st_mtime	= buf.st_mtime;
+	oldStyleBuf->st_ctime	= buf.st_ctime;
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+	oldStyleBuf->st_blksize	= buf.st_blksize;
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
+#ifdef HAVE_BLKCNT_T
+	oldStyleBuf->st_blocks	= (blkcnt_t) buf.st_blocks;
+#else
+	oldStyleBuf->st_blocks	= (unsigned long) buf.st_blocks;
+#endif
 #endif
     }
     return ret;
@@ -214,43 +182,45 @@ Tcl_Stat(path, oldStyleBuf)
 
 /* Obsolete */
 int
-Tcl_Access(path, mode)
-    CONST char *path;		/* Path of file to access (in current CP). */
-    int mode;                   /* Permission setting. */
+Tcl_Access(
+    const char *path,		/* Path of file to access (in current CP). */
+    int mode)			/* Permission setting. */
 {
     int ret;
     Tcl_Obj *pathPtr = Tcl_NewStringObj(path,-1);
+
     Tcl_IncrRefCount(pathPtr);
     ret = Tcl_FSAccess(pathPtr,mode);
     Tcl_DecrRefCount(pathPtr);
+
     return ret;
 }
 
 /* Obsolete */
 Tcl_Channel
-Tcl_OpenFileChannel(interp, path, modeString, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-					 * can be NULL. */
-    CONST char *path;                   /* Name of file to open. */
-    CONST char *modeString;             /* A list of POSIX open modes or
-					 * a string such as "rw". */
-    int permissions;                    /* If the open involves creating a
-					 * file, with what modes to create
-					 * it? */
+Tcl_OpenFileChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    const char *path,		/* Name of file to open. */
+    const char *modeString,	/* A list of POSIX open modes or a string such
+				 * as "rw". */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
 {
     Tcl_Channel ret;
     Tcl_Obj *pathPtr = Tcl_NewStringObj(path,-1);
+
     Tcl_IncrRefCount(pathPtr);
     ret = Tcl_FSOpenFileChannel(interp, pathPtr, modeString, permissions);
     Tcl_DecrRefCount(pathPtr);
-    return ret;
 
+    return ret;
 }
 
 /* Obsolete */
 int
-Tcl_Chdir(dirName)
-    CONST char *dirName;
+Tcl_Chdir(
+    const char *dirName)
 {
     int ret;
     Tcl_Obj *pathPtr = Tcl_NewStringObj(dirName,-1);
@@ -262,9 +232,9 @@ Tcl_Chdir(dirName)
 
 /* Obsolete */
 char *
-Tcl_GetCwd(interp, cwdPtr)
-    Tcl_Interp *interp;
-    Tcl_DString *cwdPtr;
+Tcl_GetCwd(
+    Tcl_Interp *interp,
+    Tcl_DString *cwdPtr)
 {
     Tcl_Obj *cwd;
     cwd = Tcl_FSGetCwd(interp);
@@ -280,9 +250,9 @@ Tcl_GetCwd(interp, cwdPtr)
 
 /* Obsolete */
 int
-Tcl_EvalFile(interp, fileName)
-    Tcl_Interp *interp;		/* Interpreter in which to process file. */
-    CONST char *fileName;	/* Name of file to process.  Tilde-substitution
+Tcl_EvalFile(
+    Tcl_Interp *interp,		/* Interpreter in which to process file. */
+    const char *fileName)	/* Name of file to process. Tilde-substitution
 				 * will be performed on this name. */
 {
     int ret;
@@ -293,59 +263,58 @@ Tcl_EvalFile(interp, fileName)
     return ret;
 }
 
-
-/* 
- * The 3 hooks for Stat, Access and OpenFileChannel are obsolete.  The
- * complete, general hooked filesystem APIs should be used instead.
- * This define decides whether to include the obsolete hooks and
- * related code.  If these are removed, we'll also want to remove them
- * from stubs/tclInt.  The only known users of these APIs are prowrap
- * and mktclapp.  New code/extensions should not use them, since they
- * do not provide as full support as the full filesystem API.
- * 
- * As soon as prowrap and mktclapp are updated to use the full
- * filesystem support, I suggest all these hooks are removed.
+/*
+ * The 3 hooks for Stat, Access and OpenFileChannel are obsolete. The
+ * complete, general hooked filesystem APIs should be used instead. This
+ * define decides whether to include the obsolete hooks and related code. If
+ * these are removed, we'll also want to remove them from stubs/tclInt. The
+ * only known users of these APIs are prowrap and mktclapp. New
+ * code/extensions should not use them, since they do not provide as full
+ * support as the full filesystem API.
+ *
+ * As soon as prowrap and mktclapp are updated to use the full filesystem
+ * support, I suggest all these hooks are removed.
  */
-#define USE_OBSOLETE_FS_HOOKS
 
+#undef USE_OBSOLETE_FS_HOOKS
 
 #ifdef USE_OBSOLETE_FS_HOOKS
+
 /*
- * The following typedef declarations allow for hooking into the chain
- * of functions maintained for 'Tcl_Stat(...)', 'Tcl_Access(...)' &
- * 'Tcl_OpenFileChannel(...)'.  Basically for each hookable function
- * a linked list is defined.
+ * The following typedef declarations allow for hooking into the chain of
+ * functions maintained for 'Tcl_Stat(...)', 'Tcl_Access(...)' &
+ * 'Tcl_OpenFileChannel(...)'. Basically for each hookable function a linked
+ * list is defined.
  */
 
 typedef struct StatProc {
-    TclStatProc_ *proc;		 /* Function to process a 'stat()' call */
-    struct StatProc *nextPtr;    /* The next 'stat()' function to call */
+    TclStatProc_ *proc;		/* Function to process a 'stat()' call */
+    struct StatProc *nextPtr;	/* The next 'stat()' function to call */
 } StatProc;
 
 typedef struct AccessProc {
-    TclAccessProc_ *proc;	 /* Function to process a 'access()' call */
-    struct AccessProc *nextPtr;  /* The next 'access()' function to call */
+    TclAccessProc_ *proc;	/* Function to process a 'access()' call */
+    struct AccessProc *nextPtr;	/* The next 'access()' function to call */
 } AccessProc;
 
 typedef struct OpenFileChannelProc {
-    TclOpenFileChannelProc_ *proc;  /* Function to process a
-				     * 'Tcl_OpenFileChannel()' call */
+    TclOpenFileChannelProc_ *proc;
+				/* Function to process a
+				 * 'Tcl_OpenFileChannel()' call */
     struct OpenFileChannelProc *nextPtr;
-				    /* The next 'Tcl_OpenFileChannel()'
-				     * function to call */
+				/* The next 'Tcl_OpenFileChannel()' function
+				 * to call */
 } OpenFileChannelProc;
 
 /*
- * For each type of (obsolete) hookable function, a static node is
- * declared to hold the function pointer for the "built-in" routine
- * (e.g. 'TclpStat(...)') and the respective list is initialized as a
- * pointer to that node.
- * 
- * The "delete" functions (e.g. 'TclStatDeleteProc(...)') ensure that
- * these statically declared list entry cannot be inadvertently removed.
+ * For each type of (obsolete) hookable function, a static node is declared to
+ * hold the function pointer for the "built-in" routine (e.g. 'TclpStat(...)')
+ * and the respective list is initialized as a pointer to that node.
  *
- * This method avoids the need to call any sort of "initialization"
- * function.
+ * The "delete" functions (e.g. 'TclStatDeleteProc(...)') ensure that these
+ * statically declared list entry cannot be inadvertently removed.
+ *
+ * This method avoids the need to call any sort of "initialization" function.
  *
  * All three lists are protected by a global obsoleteFsHookMutex.
  */
@@ -358,71 +327,69 @@ TCL_DECLARE_MUTEX(obsoleteFsHookMutex)
 
 #endif /* USE_OBSOLETE_FS_HOOKS */
 
-/* 
- * Declare the native filesystem support.  These functions should
- * be considered private to Tcl, and should really not be called
- * directly by any code other than this file (i.e. neither by
- * Tcl's core nor by extensions).  Similarly, the old string-based
- * Tclp... native filesystem functions should not be called.
- * 
- * The correct API to use now is the Tcl_FS... set of functions,
- * which ensure correct and complete virtual filesystem support.
- * 
- * We cannot make all of these static, since some of them
- * are implemented in the platform-specific directories.
+/*
+ * Declare the native filesystem support. These functions should be considered
+ * private to Tcl, and should really not be called directly by any code other
+ * than this file (i.e. neither by Tcl's core nor by extensions). Similarly,
+ * the old string-based Tclp... native filesystem functions should not be
+ * called.
+ *
+ * The correct API to use now is the Tcl_FS... set of functions, which ensure
+ * correct and complete virtual filesystem support.
+ *
+ * We cannot make all of these static, since some of them are implemented in
+ * the platform-specific directories.
  */
+
 static Tcl_FSFilesystemSeparatorProc NativeFilesystemSeparator;
 static Tcl_FSFreeInternalRepProc NativeFreeInternalRep;
-static Tcl_FSCreateInternalRepProc NativeCreateNativeRep;
 static Tcl_FSFileAttrStringsProc NativeFileAttrStrings;
-static Tcl_FSFileAttrsGetProc NativeFileAttrsGet;
-static Tcl_FSFileAttrsSetProc NativeFileAttrsSet;
-
-/* 
- * The only reason these functions are not static is that they
- * are either called by code in the native (win/unix/mac) directories
- * or they are actually implemented in those directories.  They
- * should simply not be called by code outside Tcl's native
- * filesystem core.  i.e. they should be considered 'static' to
- * Tcl's filesystem code (if we ever built the native filesystem
- * support into a separate code library, this could actually be
- * enforced).
+static Tcl_FSFileAttrsGetProc	NativeFileAttrsGet;
+static Tcl_FSFileAttrsSetProc	NativeFileAttrsSet;
+
+/*
+ * The only reason these functions are not static is that they are either
+ * called by code in the native (win/unix) directories or they are actually
+ * implemented in those directories. They should simply not be called by code
+ * outside Tcl's native filesystem core i.e. they should be considered
+ * 'static' to Tcl's filesystem code (if we ever built the native filesystem
+ * support into a separate code library, this could actually be enforced).
  */
-Tcl_FSFilesystemPathTypeProc TclpFilesystemPathType;
-Tcl_FSInternalToNormalizedProc TclpNativeToNormalized;
-Tcl_FSStatProc TclpObjStat;
-Tcl_FSAccessProc TclpObjAccess;	    
-Tcl_FSMatchInDirectoryProc TclpMatchInDirectory;  
-Tcl_FSGetCwdProc TclpObjGetCwd;     
-Tcl_FSChdirProc TclpObjChdir;	    
-Tcl_FSLstatProc TclpObjLstat;	    
-Tcl_FSCopyFileProc TclpObjCopyFile; 
-Tcl_FSDeleteFileProc TclpObjDeleteFile;	    
-Tcl_FSRenameFileProc TclpObjRenameFile;	    
-Tcl_FSCreateDirectoryProc TclpObjCreateDirectory;	    
-Tcl_FSCopyDirectoryProc TclpObjCopyDirectory;	    
-Tcl_FSRemoveDirectoryProc TclpObjRemoveDirectory;	    
-Tcl_FSUnloadFileProc TclpUnloadFile;	    
-Tcl_FSLinkProc TclpObjLink; 
-Tcl_FSListVolumesProc TclpObjListVolumes;	    
-
-/* 
- * Define the native filesystem dispatch table.  If necessary, it
- * is ok to make this non-static, but it should only be accessed
- * by the functions actually listed within it (or perhaps other
- * helper functions of them).  Anything which is not part of this
- * 'native filesystem implementation' should not be delving inside
- * here!
+
+Tcl_FSFilesystemPathTypeProc	TclpFilesystemPathType;
+Tcl_FSInternalToNormalizedProc	TclpNativeToNormalized;
+Tcl_FSStatProc			TclpObjStat;
+Tcl_FSAccessProc		TclpObjAccess;
+Tcl_FSMatchInDirectoryProc	TclpMatchInDirectory;
+Tcl_FSChdirProc			TclpObjChdir;
+Tcl_FSLstatProc			TclpObjLstat;
+Tcl_FSCopyFileProc		TclpObjCopyFile;
+Tcl_FSDeleteFileProc		TclpObjDeleteFile;
+Tcl_FSRenameFileProc		TclpObjRenameFile;
+Tcl_FSCreateDirectoryProc	TclpObjCreateDirectory;
+Tcl_FSCopyDirectoryProc		TclpObjCopyDirectory;
+Tcl_FSRemoveDirectoryProc	TclpObjRemoveDirectory;
+Tcl_FSUnloadFileProc		TclpUnloadFile;
+Tcl_FSLinkProc			TclpObjLink;
+Tcl_FSListVolumesProc		TclpObjListVolumes;
+
+/*
+ * Define the native filesystem dispatch table. If necessary, it is ok to make
+ * this non-static, but it should only be accessed by the functions actually
+ * listed within it (or perhaps other helper functions of them). Anything
+ * which is not part of this 'native filesystem implementation' should not be
+ * delving inside here!
  */
+
 Tcl_Filesystem tclNativeFilesystem = {
     "native",
     sizeof(Tcl_Filesystem),
-    TCL_FILESYSTEM_VERSION_1,
-    &NativePathInFilesystem,
+    TCL_FILESYSTEM_VERSION_2,
+    &TclNativePathInFilesystem,
     &TclNativeDupInternalRep,
     &NativeFreeInternalRep,
     &TclpNativeToNormalized,
-    &NativeCreateNativeRep,
+    &TclNativeCreateNativeRep,
     &TclpObjNormalizePath,
     &TclpFilesystemPathType,
     &NativeFilesystemSeparator,
@@ -441,238 +408,336 @@ Tcl_Filesystem tclNativeFilesystem = {
     &NativeFileAttrsGet,
     &NativeFileAttrsSet,
     &TclpObjCreateDirectory,
-    &TclpObjRemoveDirectory, 
+    &TclpObjRemoveDirectory,
     &TclpObjDeleteFile,
     &TclpObjCopyFile,
     &TclpObjRenameFile,
-    &TclpObjCopyDirectory, 
+    &TclpObjCopyDirectory,
     &TclpObjLstat,
     &TclpDlopen,
-    &TclpObjGetCwd,
+    /* Needs a cast since we're using version_2 */
+    (Tcl_FSGetCwdProc *) &TclpGetNativeCwd,
     &TclpObjChdir
 };
 
-/* 
- * Define the tail of the linked list.  Note that for unconventional
- * uses of Tcl without a native filesystem, we may in the future wish
- * to modify the current approach of hard-coding the native filesystem
- * in the lookup list 'filesystemList' below.
- * 
- * We initialize the record so that it thinks one file uses it.  This
- * means it will never be freed.
+/*
+ * Define the tail of the linked list. Note that for unconventional uses of
+ * Tcl without a native filesystem, we may in the future wish to modify the
+ * current approach of hard-coding the native filesystem in the lookup list
+ * 'filesystemList' below.
+ *
+ * We initialize the record so that it thinks one file uses it. This means it
+ * will never be freed.
  */
+
 static FilesystemRecord nativeFilesystemRecord = {
     NULL,
     &tclNativeFilesystem,
-    1,
     NULL,
     NULL
 };
 
-/* 
- * This is incremented each time we modify the linked list of
- * filesystems.  Any time it changes, all cached filesystem
- * representations are suspect and must be freed.
- * For multithreading builds, change of the filesystem epoch
- * will trigger cache cleanup in all threads.  
+/*
+ * This is incremented each time we modify the linked list of filesystems. Any
+ * time it changes, all cached filesystem representations are suspect and must
+ * be freed. For multithreading builds, change of the filesystem epoch will
+ * trigger cache cleanup in all threads.
  */
-int theFilesystemEpoch = 0;
+
+static int theFilesystemEpoch = 1;
 
 /*
- * Stores the linked list of filesystems. A 1:1 copy of this
- * list is also maintained in the TSD for each thread. This
- * is to avoid synchronization issues.
+ * Stores the linked list of filesystems. A 1:1 copy of this list is also
+ * maintained in the TSD for each thread. This is to avoid synchronization
+ * issues.
  */
-static FilesystemRecord *filesystemList = &nativeFilesystemRecord;
 
+static FilesystemRecord *filesystemList = &nativeFilesystemRecord;
 TCL_DECLARE_MUTEX(filesystemMutex)
 
-/* 
+/*
  * Used to implement Tcl_FSGetCwd in a file-system independent way.
  */
+
 static Tcl_Obj* cwdPathPtr = NULL;
 static int cwdPathEpoch = 0;
+static ClientData cwdClientData = NULL;
 TCL_DECLARE_MUTEX(cwdMutex)
 
-/*
- * This structure holds per-thread private copies of
- * some global data. This way we avoid most of the
- * synchronization calls which boosts performance, at
- * cost of having to update this information each
- * time the corresponding epoch counter changes.
- * 
- */
-typedef struct ThreadSpecificData {
-    int initialized;
-    int cwdPathEpoch;
-    int filesystemEpoch; 
-    Tcl_Obj *cwdPathPtr;
-    FilesystemRecord *filesystemList;
-} ThreadSpecificData;
-
-static Tcl_ThreadDataKey dataKey;
-
-/* 
- * Declare fallback support function and 
- * information for Tcl_FSLoadFile 
- */
-static Tcl_FSUnloadFileProc FSUnloadTempFile;
+static Tcl_ThreadDataKey fsDataKey;
 
 /*
- * One of these structures is used each time we successfully load a
- * file from a file system by way of making a temporary copy of the
- * file on the native filesystem.  We need to store both the actual
- * unloadProc/clientData combination which was used, and the original
- * and modified filenames, so that we can correctly undo the entire
- * operation when we want to unload the code.
+ * One of these structures is used each time we successfully load a file from
+ * a file system by way of making a temporary copy of the file on the native
+ * filesystem. We need to store both the actual unloadProc/clientData
+ * combination which was used, and the original and modified filenames, so
+ * that we can correctly undo the entire operation when we want to unload the
+ * code.
  */
+
 typedef struct FsDivertLoad {
     Tcl_LoadHandle loadHandle;
-    Tcl_FSUnloadFileProc *unloadProcPtr;	
+    Tcl_FSUnloadFileProc *unloadProcPtr;
     Tcl_Obj *divertedFile;
-    Tcl_Filesystem *divertedFilesystem;
+    const Tcl_Filesystem *divertedFilesystem;
     ClientData divertedFileNativeRep;
 } FsDivertLoad;
-
-/* Now move on to the basic filesystem implementation */
+
+/*
+ * Now move on to the basic filesystem implementation
+ */
 
 static void
-FsThrExitProc(cd)
-    ClientData cd;
+FsThrExitProc(
+    ClientData cd)
 {
-    ThreadSpecificData *tsdPtr = (ThreadSpecificData*)cd;
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *) cd;
     FilesystemRecord *fsRecPtr = NULL, *tmpFsRecPtr = NULL;
 
-    /* Trash the cwd copy */
+    /*
+     * Trash the cwd copy.
+     */
+
     if (tsdPtr->cwdPathPtr != NULL) {
 	Tcl_DecrRefCount(tsdPtr->cwdPathPtr);
 	tsdPtr->cwdPathPtr = NULL;
     }
-    /* Trash the filesystems cache */
+    if (tsdPtr->cwdClientData != NULL) {
+	NativeFreeInternalRep(tsdPtr->cwdClientData);
+    }
+
+    /*
+     * Trash the filesystems cache.
+     */
+
     fsRecPtr = tsdPtr->filesystemList;
     while (fsRecPtr != NULL) {
 	tmpFsRecPtr = fsRecPtr->nextPtr;
-	if (--fsRecPtr->fileRefCount <= 0) {
-	    ckfree((char *)fsRecPtr);
-	}
+	fsRecPtr->fsPtr = NULL;
+	ckfree((char *)fsRecPtr);
 	fsRecPtr = tmpFsRecPtr;
     }
+    tsdPtr->filesystemList = NULL;
     tsdPtr->initialized = 0;
 }
 
-int 
-TclFSCwdPointerEquals(objPtr)
-    Tcl_Obj* objPtr;
+int
+TclFSCwdIsNative(void)
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+
+    if (tsdPtr->cwdClientData != NULL) {
+	return 1;
+    } else {
+	return 0;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFSCwdPointerEquals --
+ *
+ *	Check whether the current working directory is equal to the path
+ *	given.
+ *
+ * Results:
+ *	1 (equal) or 0 (un-equal) as appropriate.
+ *
+ * Side effects:
+ *	If the paths are equal, but are not the same object, this method will
+ *	modify the given pathPtrPtr to refer to the same object. In this case
+ *	the object pointed to by pathPtrPtr will have its refCount
+ *	decremented, and it will be adjusted to point to the cwd (with a new
+ *	refCount).
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclFSCwdPointerEquals(
+    Tcl_Obj** pathPtrPtr)
 {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
 
     Tcl_MutexLock(&cwdMutex);
-    if (tsdPtr->cwdPathPtr == NULL) {
+    if (tsdPtr->cwdPathPtr == NULL
+	    || tsdPtr->cwdPathEpoch != cwdPathEpoch) {
+	if (tsdPtr->cwdPathPtr != NULL) {
+	    Tcl_DecrRefCount(tsdPtr->cwdPathPtr);
+	}
+	if (tsdPtr->cwdClientData != NULL) {
+	    NativeFreeInternalRep(tsdPtr->cwdClientData);
+	}
 	if (cwdPathPtr == NULL) {
 	    tsdPtr->cwdPathPtr = NULL;
 	} else {
 	    tsdPtr->cwdPathPtr = Tcl_DuplicateObj(cwdPathPtr);
 	    Tcl_IncrRefCount(tsdPtr->cwdPathPtr);
 	}
-	tsdPtr->cwdPathEpoch = cwdPathEpoch;
-    } else if (tsdPtr->cwdPathEpoch != cwdPathEpoch) { 
-	Tcl_DecrRefCount(tsdPtr->cwdPathPtr);
-	if (cwdPathPtr == NULL) {
-	    tsdPtr->cwdPathPtr = NULL;
+	if (cwdClientData == NULL) {
+	    tsdPtr->cwdClientData = NULL;
 	} else {
-	    tsdPtr->cwdPathPtr = Tcl_DuplicateObj(cwdPathPtr);
-	    Tcl_IncrRefCount(tsdPtr->cwdPathPtr);
+	    tsdPtr->cwdClientData = TclNativeDupInternalRep(cwdClientData);
 	}
+	tsdPtr->cwdPathEpoch = cwdPathEpoch;
     }
     Tcl_MutexUnlock(&cwdMutex);
 
     if (tsdPtr->initialized == 0) {
-	Tcl_CreateThreadExitHandler(FsThrExitProc, (ClientData)tsdPtr);
+	Tcl_CreateThreadExitHandler(FsThrExitProc, (ClientData) tsdPtr);
 	tsdPtr->initialized = 1;
     }
-    return (tsdPtr->cwdPathPtr == objPtr); 
+
+    if (pathPtrPtr == NULL) {
+	return (tsdPtr->cwdPathPtr == NULL);
+    }
+
+    if (tsdPtr->cwdPathPtr == *pathPtrPtr) {
+	return 1;
+    } else {
+	int len1, len2;
+	const char *str1, *str2;
+
+	str1 = Tcl_GetStringFromObj(tsdPtr->cwdPathPtr, &len1);
+	str2 = Tcl_GetStringFromObj(*pathPtrPtr, &len2);
+	if (len1 == len2 && !strcmp(str1,str2)) {
+	    /*
+	     * They are equal, but different objects. Update so they will be
+	     * the same object in the future.
+	     */
+
+	    Tcl_DecrRefCount(*pathPtrPtr);
+	    *pathPtrPtr = tsdPtr->cwdPathPtr;
+	    Tcl_IncrRefCount(*pathPtrPtr);
+	    return 1;
+	} else {
+	    return 0;
+	}
+    }
 }
-#ifdef TCL_THREADS
 
 static void
 FsRecacheFilesystemList(void)
 {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    FilesystemRecord *fsRecPtr, *tmpFsRecPtr = NULL;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+    FilesystemRecord *fsRecPtr, *tmpFsRecPtr = NULL, *toFree = NULL, *list;
+
+    /*
+     * Trash the current cache.
+     */
 
-    /* Trash the current cache */
     fsRecPtr = tsdPtr->filesystemList;
     while (fsRecPtr != NULL) {
 	tmpFsRecPtr = fsRecPtr->nextPtr;
-	if (--fsRecPtr->fileRefCount <= 0) {
-	    ckfree((char *)fsRecPtr);
-	}
+	fsRecPtr->nextPtr = toFree;
+	toFree = fsRecPtr;
 	fsRecPtr = tmpFsRecPtr;
     }
-    tsdPtr->filesystemList = NULL;
 
     /*
-     * Code below operates on shared data. We
-     * are already called under mutex lock so   
-     * we can safely proceed.
+     * Locate tail of the global filesystem list.
      */
 
-    /* Locate tail of the global filesystem list */
+    Tcl_MutexLock(&filesystemMutex);
     fsRecPtr = filesystemList;
     while (fsRecPtr != NULL) {
 	tmpFsRecPtr = fsRecPtr;
 	fsRecPtr = fsRecPtr->nextPtr;
     }
-    
-    /* Refill the cache honouring the order */
+
+    /*
+     * Refill the cache honouring the order.
+     */
+
+    list = NULL;
     fsRecPtr = tmpFsRecPtr;
     while (fsRecPtr != NULL) {
-	tmpFsRecPtr = (FilesystemRecord *)ckalloc(sizeof(FilesystemRecord));
+	tmpFsRecPtr = (FilesystemRecord *) ckalloc(sizeof(FilesystemRecord));
 	*tmpFsRecPtr = *fsRecPtr;
-	tmpFsRecPtr->nextPtr = tsdPtr->filesystemList;
+	tmpFsRecPtr->nextPtr = list;
 	tmpFsRecPtr->prevPtr = NULL;
-	if (tsdPtr->filesystemList) {
-	    tsdPtr->filesystemList->prevPtr = tmpFsRecPtr;
-	}
-	tsdPtr->filesystemList = tmpFsRecPtr;
-        fsRecPtr = fsRecPtr->prevPtr;
+	list = tmpFsRecPtr;
+	fsRecPtr = fsRecPtr->prevPtr;
+    }
+    tsdPtr->filesystemList = list;
+    tsdPtr->filesystemEpoch = theFilesystemEpoch;
+    Tcl_MutexUnlock(&filesystemMutex);
+
+    while (toFree) {
+	FilesystemRecord *next = toFree->nextPtr;
+	toFree->fsPtr = NULL;
+	ckfree((char *)toFree);
+	toFree = next;
     }
 
-    /* Make sure the above gets released on thread exit */
+    /*
+     * Make sure the above gets released on thread exit.
+     */
+
     if (tsdPtr->initialized == 0) {
-	Tcl_CreateThreadExitHandler(FsThrExitProc, (ClientData)tsdPtr);
+	Tcl_CreateThreadExitHandler(FsThrExitProc, (ClientData) tsdPtr);
 	tsdPtr->initialized = 1;
     }
 }
-#endif
 
 static FilesystemRecord *
-FsGetFirstFilesystem(void) {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    FilesystemRecord *fsRecPtr;
-#ifndef TCL_THREADS
-    tsdPtr->filesystemEpoch = theFilesystemEpoch;
-    fsRecPtr = filesystemList;
-#else
-    Tcl_MutexLock(&filesystemMutex);
-    if (tsdPtr->filesystemList == NULL
-	    || (tsdPtr->filesystemEpoch != theFilesystemEpoch)) {
- 	FsRecacheFilesystemList();
-	tsdPtr->filesystemEpoch = theFilesystemEpoch;
+FsGetFirstFilesystem(void)
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+    if (tsdPtr->filesystemList == NULL || ((tsdPtr->claims == 0)
+	    && (tsdPtr->filesystemEpoch != theFilesystemEpoch))) {
+	FsRecacheFilesystemList();
     }
-    Tcl_MutexUnlock(&filesystemMutex);
-    fsRecPtr = tsdPtr->filesystemList;
-#endif
-    return fsRecPtr;
+    return tsdPtr->filesystemList;
+}
+
+/*
+ * The epoch can be changed both by filesystems being added or removed and by
+ * env(HOME) changing.
+ */
+
+int
+TclFSEpochOk(
+    int filesystemEpoch)
+{
+    return (filesystemEpoch == 0 || filesystemEpoch == theFilesystemEpoch);
+}
+
+static void
+Claim()
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+    tsdPtr->claims++;
+}
+
+static void
+Disclaim()
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+    tsdPtr->claims--;
 }
+
+int
+TclFSEpoch()
+{
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+    return tsdPtr->filesystemEpoch;
+}
+
 
+/*
+ * If non-NULL, clientData is owned by us and must be freed later.
+ */
+
 static void
-FsUpdateCwd(cwdObj)
-    Tcl_Obj *cwdObj;
+FsUpdateCwd(
+    Tcl_Obj *cwdObj,
+    ClientData clientData)
 {
     int len;
     char *str = NULL;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
 
     if (cwdObj != NULL) {
 	str = Tcl_GetStringFromObj(cwdObj, &len);
@@ -680,26 +745,42 @@ FsUpdateCwd(cwdObj)
 
     Tcl_MutexLock(&cwdMutex);
     if (cwdPathPtr != NULL) {
-        Tcl_DecrRefCount(cwdPathPtr);
+	Tcl_DecrRefCount(cwdPathPtr);
     }
+    if (cwdClientData != NULL) {
+	NativeFreeInternalRep(cwdClientData);
+    }
+
     if (cwdObj == NULL) {
 	cwdPathPtr = NULL;
+	cwdClientData = NULL;
     } else {
-	/* This MUST be stored as string object! */
-	cwdPathPtr = Tcl_NewStringObj(str, len); 
+	/*
+	 * This must be stored as string obj!
+	 */
+
+	cwdPathPtr = Tcl_NewStringObj(str, len);
     	Tcl_IncrRefCount(cwdPathPtr);
+	cwdClientData = TclNativeDupInternalRep(clientData);
     }
+
     cwdPathEpoch++;
     tsdPtr->cwdPathEpoch = cwdPathEpoch;
     Tcl_MutexUnlock(&cwdMutex);
 
     if (tsdPtr->cwdPathPtr) {
-        Tcl_DecrRefCount(tsdPtr->cwdPathPtr);
+	Tcl_DecrRefCount(tsdPtr->cwdPathPtr);
     }
+    if (tsdPtr->cwdClientData) {
+	NativeFreeInternalRep(tsdPtr->cwdClientData);
+    }
+
     if (cwdObj == NULL) {
 	tsdPtr->cwdPathPtr = NULL;
+	tsdPtr->cwdClientData = NULL;
     } else {
-	tsdPtr->cwdPathPtr = Tcl_NewStringObj(str, len); 
+	tsdPtr->cwdPathPtr = Tcl_NewStringObj(str, len);
+	tsdPtr->cwdClientData = clientData;
 	Tcl_IncrRefCount(tsdPtr->cwdPathPtr);
     }
 }
@@ -709,12 +790,12 @@ FsUpdateCwd(cwdObj)
  *
  * TclFinalizeFilesystem --
  *
- *	Clean up the filesystem.  After this, calls to all Tcl_FS...
- *	functions will fail.
- *	
- *	We will later call TclResetFilesystem to restore the FS
- *	to a pristine state.
- *	
+ *	Clean up the filesystem. After this, calls to all Tcl_FS... functions
+ *	will fail.
+ *
+ *	We will later call TclResetFilesystem to restore the FS to a pristine
+ *	state.
+ *
  * Results:
  *	None.
  *
@@ -725,47 +806,54 @@ FsUpdateCwd(cwdObj)
  */
 
 void
-TclFinalizeFilesystem()
+TclFinalizeFilesystem(void)
 {
     FilesystemRecord *fsRecPtr;
 
-    /* 
-     * Assumption that only one thread is active now.  Otherwise
-     * we would need to put various mutexes around this code.
+    /*
+     * Assumption that only one thread is active now. Otherwise we would need
+     * to put various mutexes around this code.
      */
-    
+
     if (cwdPathPtr != NULL) {
 	Tcl_DecrRefCount(cwdPathPtr);
 	cwdPathPtr = NULL;
-        cwdPathEpoch = 0;
+	cwdPathEpoch = 0;
+    }
+    if (cwdClientData != NULL) {
+	NativeFreeInternalRep(cwdClientData);
+	cwdClientData = NULL;
     }
 
-    /* 
-     * Remove all filesystems, freeing any allocated memory
-     * that is no longer needed
+    /*
+     * Remove all filesystems, freeing any allocated memory that is no longer
+     * needed
      */
 
     fsRecPtr = filesystemList;
     while (fsRecPtr != NULL) {
 	FilesystemRecord *tmpFsRecPtr = fsRecPtr->nextPtr;
-	if (fsRecPtr->fileRefCount <= 0) {
-	    /* The native filesystem is static, so we don't free it */
-	    if (fsRecPtr->fsPtr != &tclNativeFilesystem) {
-		ckfree((char *)fsRecPtr);
-	    }
+
+	/* The native filesystem is static, so we don't free it. */
+
+	if (fsRecPtr != &nativeFilesystemRecord) {
+	    ckfree((char *)fsRecPtr);
 	}
 	fsRecPtr = tmpFsRecPtr;
     }
+    theFilesystemEpoch++;
     filesystemList = NULL;
 
     /*
-     * Now filesystemList is NULL.  This means that any attempt
-     * to use the filesystem is likely to fail.
+     * Now filesystemList is NULL. This means that any attempt to use the
+     * filesystem is likely to fail.
      */
 
+#ifdef USE_OBSOLETE_FS_HOOKS
     statProcList = NULL;
     accessProcList = NULL;
     openFileChannelProcList = NULL;
+#endif
 #ifdef __WIN32__
     TclWinEncodingsCleanup();
 #endif
@@ -777,7 +865,7 @@ TclFinalizeFilesystem()
  * TclResetFilesystem --
  *
  *	Restore the filesystem to a pristine state.
- *	
+ *
  * Results:
  *	None.
  *
@@ -788,22 +876,17 @@ TclFinalizeFilesystem()
  */
 
 void
-TclResetFilesystem()
+TclResetFilesystem(void)
 {
     filesystemList = &nativeFilesystemRecord;
+    theFilesystemEpoch++;
 
-    /* 
-     * Note, at this point, I believe nativeFilesystemRecord ->
-     * fileRefCount should equal 1 and if not, we should try to track
-     * down the cause.
-     */
-    
 #ifdef __WIN32__
-    /* 
-     * Cleans up the win32 API filesystem proc lookup table. This must
-     * happen very late in finalization so that deleting of copied
-     * dlls can occur.
+    /*
+     * Cleans up the win32 API filesystem proc lookup table. This must happen
+     * very late in finalization so that deleting of copied dlls can occur.
      */
+
     TclWinResetInterfaces();
 #endif
 }
@@ -813,36 +896,35 @@ TclResetFilesystem()
  *
  * Tcl_FSRegister --
  *
- *    Insert the filesystem function table at the head of the list of
- *    functions which are used during calls to all file-system
- *    operations.  The filesystem will be added even if it is 
- *    already in the list.  (You can use Tcl_FSData to
- *    check if it is in the list, provided the ClientData used was
- *    not NULL).
- *    
- *    Note that the filesystem handling is head-to-tail of the list.
- *    Each filesystem is asked in turn whether it can handle a
- *    particular request, _until_ one of them says 'yes'. At that
- *    point no further filesystems are asked.
- *    
- *    In particular this means if you want to add a diagnostic
- *    filesystem (which simply reports all fs activity), it must be 
- *    at the head of the list: i.e. it must be the last registered.
+ *	Insert the filesystem function table at the head of the list of
+ *	functions which are used during calls to all file-system operations.
+ *	The filesystem will be added even if it is already in the list. (You
+ *	can use Tcl_FSData to check if it is in the list, provided the
+ *	ClientData used was not NULL).
+ *
+ *	Note that the filesystem handling is head-to-tail of the list. Each
+ *	filesystem is asked in turn whether it can handle a particular
+ *	request, until one of them says 'yes'. At that point no further
+ *	filesystems are asked.
+ *
+ *	In particular this means if you want to add a diagnostic filesystem
+ *	(which simply reports all fs activity), it must be at the head of the
+ *	list: i.e. it must be the last registered.
  *
  * Results:
- *    Normally TCL_OK; TCL_ERROR if memory for a new node in the list
- *    could not be allocated.
+ *	Normally TCL_OK; TCL_ERROR if memory for a new node in the list could
+ *	not be allocated.
  *
  * Side effects:
- *    Memory allocated and modifies the link list for filesystems.
+ *	Memory allocated and modifies the link list for filesystems.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSRegister(clientData, fsPtr)
-    ClientData clientData;    /* Client specific data for this fs */
-    Tcl_Filesystem  *fsPtr;   /* The filesystem record for the new fs. */
+Tcl_FSRegister(
+    ClientData clientData,	/* Client specific data for this fs */
+    Tcl_Filesystem *fsPtr)	/* The filesystem record for the new fs. */
 {
     FilesystemRecord *newFilesystemPtr;
 
@@ -854,25 +936,20 @@ Tcl_FSRegister(clientData, fsPtr)
 
     newFilesystemPtr->clientData = clientData;
     newFilesystemPtr->fsPtr = fsPtr;
-    /* 
-     * We start with a refCount of 1.  If this drops to zero, then
-     * anyone is welcome to ckfree us.
-     */
-    newFilesystemPtr->fileRefCount = 1;
-
-    /* 
-     * Is this lock and wait strictly speaking necessary?  Since any
-     * iterators out there will have grabbed a copy of the head of
-     * the list and be iterating away from that, if we add a new
-     * element to the head of the list, it can't possibly have any
-     * effect on any of their loops.  In fact it could be better not
-     * to wait, since we are adjusting the filesystem epoch, any
-     * cached representations calculated by existing iterators are
+
+    /*
+     * Is this lock and wait strictly speaking necessary? Since any iterators
+     * out there will have grabbed a copy of the head of the list and be
+     * iterating away from that, if we add a new element to the head of the
+     * list, it can't possibly have any effect on any of their loops. In fact
+     * it could be better not to wait, since we are adjusting the filesystem
+     * epoch, any cached representations calculated by existing iterators are
      * going to have to be thrown away anyway.
-     * 
-     * However, since registering and unregistering filesystems is
-     * a very rare action, this is not a very important point.
+     *
+     * However, since registering and unregistering filesystems is a very rare
+     * action, this is not a very important point.
      */
+
     Tcl_MutexLock(&filesystemMutex);
 
     newFilesystemPtr->nextPtr = filesystemList;
@@ -882,10 +959,11 @@ Tcl_FSRegister(clientData, fsPtr)
     }
     filesystemList = newFilesystemPtr;
 
-    /* 
-     * Increment the filesystem epoch counter, since existing paths
-     * might conceivably now belong to different filesystems.
+    /*
+     * Increment the filesystem epoch counter, since existing paths might
+     * conceivably now belong to different filesystems.
      */
+
     theFilesystemEpoch++;
     Tcl_MutexUnlock(&filesystemMutex);
 
@@ -897,29 +975,28 @@ Tcl_FSRegister(clientData, fsPtr)
  *
  * Tcl_FSUnregister --
  *
- *    Remove the passed filesystem from the list of filesystem
- *    function tables.  It also ensures that the built-in
- *    (native) filesystem is not removable, although we may wish
- *    to change that decision in the future to allow a smaller
- *    Tcl core, in which the native filesystem is not used at
- *    all (we could, say, initialise Tcl completely over a network
- *    connection).
+ *	Remove the passed filesystem from the list of filesystem function
+ *	tables. It also ensures that the built-in (native) filesystem is not
+ *	removable, although we may wish to change that decision in the future
+ *	to allow a smaller Tcl core, in which the native filesystem is not
+ *	used at all (we could, say, initialise Tcl completely over a network
+ *	connection).
  *
  * Results:
- *    TCL_OK if the procedure pointer was successfully removed,
- *    TCL_ERROR otherwise.
+ *	TCL_OK if the function pointer was successfully removed, TCL_ERROR
+ *	otherwise.
  *
  * Side effects:
- *    Memory may be deallocated (or will be later, once no "path" 
- *    objects refer to this filesystem), but the list of registered
- *    filesystems is updated immediately.
+ *	Memory may be deallocated (or will be later, once no "path" objects
+ *	refer to this filesystem), but the list of registered filesystems is
+ *	updated immediately.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSUnregister(fsPtr)
-    Tcl_Filesystem  *fsPtr;   /* The filesystem record to remove. */
+Tcl_FSUnregister(
+    Tcl_Filesystem *fsPtr)	/* The filesystem record to remove. */
 {
     int retVal = TCL_ERROR;
     FilesystemRecord *fsRecPtr;
@@ -927,13 +1004,13 @@ Tcl_FSUnregister(fsPtr)
     Tcl_MutexLock(&filesystemMutex);
 
     /*
-     * Traverse the 'filesystemList' looking for the particular node
-     * whose 'fsPtr' member matches 'fsPtr' and remove that one from
-     * the list.  Ensure that the "default" node cannot be removed.
+     * Traverse the 'filesystemList' looking for the particular node whose
+     * 'fsPtr' member matches 'fsPtr' and remove that one from the list.
+     * Ensure that the "default" node cannot be removed.
      */
 
     fsRecPtr = filesystemList;
-    while ((retVal == TCL_ERROR) && (fsRecPtr->fsPtr != &tclNativeFilesystem)) {
+    while ((retVal == TCL_ERROR) && (fsRecPtr != &nativeFilesystemRecord)) {
 	if (fsRecPtr->fsPtr == fsPtr) {
 	    if (fsRecPtr->prevPtr) {
 		fsRecPtr->prevPtr->nextPtr = fsRecPtr->nextPtr;
@@ -943,20 +1020,18 @@ Tcl_FSUnregister(fsPtr)
 	    if (fsRecPtr->nextPtr) {
 		fsRecPtr->nextPtr->prevPtr = fsRecPtr->prevPtr;
 	    }
-	    /* 
-	     * Increment the filesystem epoch counter, since existing
-	     * paths might conceivably now belong to different
-	     * filesystems.  This should also ensure that paths which
-	     * have cached the filesystem which is about to be deleted
-	     * do not reference that filesystem (which would of course
-	     * lead to memory exceptions).
+
+	    /*
+	     * Increment the filesystem epoch counter, since existing paths
+	     * might conceivably now belong to different filesystems. This
+	     * should also ensure that paths which have cached the filesystem
+	     * which is about to be deleted do not reference that filesystem
+	     * (which would of course lead to memory exceptions).
 	     */
+
 	    theFilesystemEpoch++;
-	    
-	    fsRecPtr->fileRefCount--;
-	    if (fsRecPtr->fileRefCount <= 0) {
-	        ckfree((char *)fsRecPtr);
-	    }
+
+	    ckfree((char *)fsRecPtr);
 
 	    retVal = TCL_OK;
 	} else {
@@ -965,7 +1040,7 @@ Tcl_FSUnregister(fsPtr)
     }
 
     Tcl_MutexUnlock(&filesystemMutex);
-    return (retVal);
+    return retVal;
 }
 
 /*
@@ -973,132 +1048,145 @@ Tcl_FSUnregister(fsPtr)
  *
  * Tcl_FSMatchInDirectory --
  *
- *	This routine is used by the globbing code to search a directory
- *	for all files which match a given pattern.  The appropriate
- *	function for the filesystem to which pathPtr belongs will be
- *	called.  If pathPtr does not belong to any filesystem and if it
- *	is NULL or the empty string, then we assume the pattern is to be
- *	matched in the current working directory.  To avoid each
- *	filesystem's Tcl_FSMatchInDirectoryProc having to deal with this
- *	issue, we create a pathPtr on the fly (equal to the cwd), and
- *	then remove it from the results returned.  This makes filesystems
- *	easy to write, since they can assume the pathPtr passed to them
- *	is an ordinary path.  In fact this means we could remove such
- *	special case handling from Tcl's native filesystems.
- *	
- *	If 'pattern' is NULL, then pathPtr is assumed to be a fully
- *	specified path of a single file/directory which must be
- *	checked for existence and correct type.
- *
- * Results: 
- *	
- *	The return value is a standard Tcl result indicating whether an
- *	error occurred in globbing.  Error messages are placed in
- *	interp, but good results are placed in the resultPtr given.
- *	
+ *	This routine is used by the globbing code to search a directory for
+ *	all files which match a given pattern. The appropriate function for
+ *	the filesystem to which pathPtr belongs will be called. If pathPtr
+ *	does not belong to any filesystem and if it is NULL or the empty
+ *	string, then we assume the pattern is to be matched in the current
+ *	working directory. To avoid have the Tcl_FSMatchInDirectoryProc for
+ *	each filesystem from having to deal with this issue, we create a
+ *	pathPtr on the fly (equal to the cwd), and then remove it from the
+ *	results returned. This makes filesystems easy to write, since they can
+ *	assume the pathPtr passed to them is an ordinary path. In fact this
+ *	means we could remove such special case handling from Tcl's native
+ *	filesystems.
+ *
+ *	If 'pattern' is NULL, then pathPtr is assumed to be a fully specified
+ *	path of a single file/directory which must be checked for existence
+ *	and correct type.
+ *
+ * Results:
+ *
+ *	The return value is a standard Tcl result indicating whether an error
+ *	occurred in globbing. Error messages are placed in interp, but good
+ *	results are placed in the resultPtr given.
+ *
  *	Recursive searches, e.g.
- *	
- *	   glob -dir $dir -join * pkgIndex.tcl
- *	   
- *	which must recurse through each directory matching '*' are
- *	handled internally by Tcl, by passing specific flags in a 
- *	modified 'types' parameter.  This means the actual filesystem
- *	only ever sees patterns which match in a single directory.
+ *		glob -dir $dir -join * pkgIndex.tcl
+ *	which must recurse through each directory matching '*' are handled
+ *	internally by Tcl, by passing specific flags in a modified 'types'
+ *	parameter. This means the actual filesystem only ever sees patterns
+ *	which match in a single directory.
  *
  * Side effects:
  *	The interpreter may have an error message inserted into it.
  *
- *---------------------------------------------------------------------- 
+ *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSMatchInDirectory(interp, result, pathPtr, pattern, types)
-    Tcl_Interp *interp;		/* Interpreter to receive error messages. */
-    Tcl_Obj *result;		/* List object to receive results. */
-    Tcl_Obj *pathPtr;	        /* Contains path to directory to search. */
-    CONST char *pattern;	/* Pattern to match against. */
-    Tcl_GlobTypeData *types;	/* Object containing list of acceptable types.
+Tcl_FSMatchInDirectory(
+    Tcl_Interp *interp,		/* Interpreter to receive error messages, but
+                       		 * may be NULL. */
+    Tcl_Obj *resultPtr,		/* List object to receive results. */
+    Tcl_Obj *pathPtr,		/* Contains path to directory to search. */
+    const char *pattern,	/* Pattern to match against. */
+    Tcl_GlobTypeData *types)	/* Object containing list of acceptable types.
 				 * May be NULL. In particular the directory
 				 * flag is very important. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr;
+    Tcl_Obj *cwd, *tmpResultPtr, **elemsPtr;
+    int resLength, i, ret = -1;
+
+    if (types != NULL && types->type & TCL_GLOB_TYPE_MOUNT) {
+	/*
+	 * We don't currently allow querying of mounts by external code (a
+	 * valuable future step), so since we're the only function that
+	 * actually knows about mounts, this means we're being called
+	 * recursively by ourself. Return no matches.
+	 */
+
+	return TCL_OK;
+    }
+
+    if (pathPtr != NULL) {
+	fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    } else {
+	fsPtr = NULL;
+    }
+
+    /*
+     * Check if we've successfully mapped the path to a filesystem within
+     * which to search.
+     */
+
     if (fsPtr != NULL) {
-	Tcl_FSMatchInDirectoryProc *proc = fsPtr->matchInDirectoryProc;
-	if (proc != NULL) {
-	    int ret = (*proc)(interp, result, pathPtr, pattern, types);
-	    if (ret == TCL_OK && pattern != NULL) {
-		result = FsAddMountsToGlobResult(result, pathPtr, 
-						 pattern, types);
-	    }
-	    return ret;
+	if (fsPtr->matchInDirectoryProc == NULL) {
+	    Tcl_SetErrno(ENOENT);
+	    return -1;
 	}
-    } else {
-	Tcl_Obj* cwd;
-	int ret = -1;
-	if (pathPtr != NULL) {
-	    int len;
-	    Tcl_GetStringFromObj(pathPtr,&len);
-	    if (len != 0) {
-		/* 
-		 * We have no idea how to match files in a directory
-		 * which belongs to no known filesystem
-		 */
-		Tcl_SetErrno(ENOENT);
-		return -1;
-	    }
+	ret = (*fsPtr->matchInDirectoryProc)(interp, resultPtr, pathPtr,
+		pattern, types);
+	if (ret == TCL_OK && pattern != NULL) {
+	    FsAddMountsToGlobResult(resultPtr, pathPtr, pattern, types);
 	}
-	/* 
-	 * We have an empty or NULL path.  This is defined to mean we
-	 * must search for files within the current 'cwd'.  We
-	 * therefore use that, but then since the proc we call will
-	 * return results which include the cwd we must then trim it
-	 * off the front of each path in the result.  We choose to deal
-	 * with this here (in the generic code), since if we don't,
-	 * every single filesystem's implementation of
-	 * Tcl_FSMatchInDirectory will have to deal with it for us.
-	 */
-	cwd = Tcl_FSGetCwd(NULL);
-	if (cwd == NULL) {
-	    if (interp != NULL) {
-		Tcl_SetResult(interp, "glob couldn't determine "
-			  "the current working directory", TCL_STATIC);
-	    }
-	    return TCL_ERROR;
+	return ret;
+    }
+
+    /*
+     * If the path isn't empty, we have no idea how to match files in a
+     * directory which belongs to no known filesystem
+     */
+
+    if (pathPtr != NULL && TclGetString(pathPtr)[0] != '\0') {
+	Tcl_SetErrno(ENOENT);
+	return -1;
+    }
+
+    /*
+     * We have an empty or NULL path. This is defined to mean we must search
+     * for files within the current 'cwd'. We therefore use that, but then
+     * since the proc we call will return results which include the cwd we
+     * must then trim it off the front of each path in the result. We choose
+     * to deal with this here (in the generic code), since if we don't, every
+     * single filesystem's implementation of Tcl_FSMatchInDirectory will have
+     * to deal with it for us.
+     */
+
+    cwd = Tcl_FSGetCwd(NULL);
+    if (cwd == NULL) {
+	if (interp != NULL) {
+	    Tcl_SetResult(interp, "glob couldn't determine "
+		    "the current working directory", TCL_STATIC);
 	}
-	fsPtr = Tcl_FSGetFileSystemForPath(cwd);
-	if (fsPtr != NULL) {
-	    Tcl_FSMatchInDirectoryProc *proc = fsPtr->matchInDirectoryProc;
-	    if (proc != NULL) {
-		Tcl_Obj* tmpResultPtr = Tcl_NewListObj(0, NULL);
-		Tcl_IncrRefCount(tmpResultPtr);
-		ret = (*proc)(interp, tmpResultPtr, cwd, pattern, types);
-		if (ret == TCL_OK) {
-		    int resLength;
-
-		    tmpResultPtr = FsAddMountsToGlobResult(tmpResultPtr, cwd,
-							   pattern, types);
-
-		    ret = Tcl_ListObjLength(interp, tmpResultPtr, &resLength);
-		    if (ret == TCL_OK) {
-			int i;
-
-			for (i = 0; i < resLength; i++) {
-			    Tcl_Obj *elt;
-			    
-			    Tcl_ListObjIndex(interp, tmpResultPtr, i, &elt);
-			    Tcl_ListObjAppendElement(interp, result, 
-				TclFSMakePathRelative(interp, elt, cwd));
-			}
-		    }
-		}
-		Tcl_DecrRefCount(tmpResultPtr);
+	return TCL_ERROR;
+    }
+
+    fsPtr = Tcl_FSGetFileSystemForPath(cwd);
+    if (fsPtr != NULL && fsPtr->matchInDirectoryProc != NULL) {
+	TclNewObj(tmpResultPtr);
+	Tcl_IncrRefCount(tmpResultPtr);
+	ret = (*fsPtr->matchInDirectoryProc)(interp, tmpResultPtr, cwd,
+		pattern, types);
+	if (ret == TCL_OK) {
+	    FsAddMountsToGlobResult(tmpResultPtr, cwd, pattern, types);
+
+	    /*
+	     * Note that we know resultPtr and tmpResultPtr are distinct.
+	     */
+
+	    ret = Tcl_ListObjGetElements(interp, tmpResultPtr,
+		    &resLength, &elemsPtr);
+	    for (i=0 ; ret==TCL_OK && i<resLength ; i++) {
+		ret = Tcl_ListObjAppendElement(interp, resultPtr,
+			TclFSMakePathRelative(interp, elemsPtr[i], cwd));
 	    }
 	}
-	Tcl_DecrRefCount(cwd);
-	return ret;
+	TclDecrRefCount(tmpResultPtr);
     }
-    Tcl_SetErrno(ENOENT);
-    return -1;
+    Tcl_DecrRefCount(cwd);
+    return ret;
 }
 
 /*
@@ -1106,85 +1194,104 @@ Tcl_FSMatchInDirectory(interp, result, pathPtr, pattern, types)
  *
  * FsAddMountsToGlobResult --
  *
- *	This routine is used by the globbing code to take the results
- *	of a directory listing and add any mounted paths to that
- *	listing.  This is required so that simple things like 
- *	'glob *' merge mounts and listings correctly.
- *	
- * Results: 
- *	
- *	The passed in 'result' may be modified (in place, if
- *	necessary), and the correct list is returned.
+ *	This routine is used by the globbing code to take the results of a
+ *	directory listing and add any mounted paths to that listing. This is
+ *	required so that simple things like 'glob *' merge mounts and listings
+ *	correctly.
  *
- * Side effects:
+ * Results:
  *	None.
  *
- *---------------------------------------------------------------------- 
+ * Side effects:
+ *	Modifies the resultPtr.
+ *
+ *----------------------------------------------------------------------
  */
-static Tcl_Obj*
-FsAddMountsToGlobResult(result, pathPtr, pattern, types)
-    Tcl_Obj *result;    /* The current list of matching paths */
-    Tcl_Obj *pathPtr;   /* The directory in question */
-    CONST char *pattern;
-    Tcl_GlobTypeData *types;
+
+static void
+FsAddMountsToGlobResult(
+    Tcl_Obj *resultPtr,		/* The current list of matching paths; must
+				 * not be shared! */
+    Tcl_Obj *pathPtr,		/* The directory in question */
+    const char *pattern,	/* Pattern to match against. */
+    Tcl_GlobTypeData *types)	/* Object containing list of acceptable types.
+				 * May be NULL. In particular the directory
+				 * flag is very important. */
 {
     int mLength, gLength, i;
     int dir = (types == NULL || (types->type & TCL_GLOB_TYPE_DIR));
     Tcl_Obj *mounts = FsListMounts(pathPtr, pattern);
 
-    if (mounts == NULL) return result; 
+    if (mounts == NULL) {
+	return;
+    }
 
     if (Tcl_ListObjLength(NULL, mounts, &mLength) != TCL_OK || mLength == 0) {
 	goto endOfMounts;
     }
-    if (Tcl_ListObjLength(NULL, result, &gLength) != TCL_OK) {
+    if (Tcl_ListObjLength(NULL, resultPtr, &gLength) != TCL_OK) {
 	goto endOfMounts;
     }
-    for (i = 0; i < mLength; i++) {
+    for (i=0 ; i<mLength ; i++) {
 	Tcl_Obj *mElt;
 	int j;
 	int found = 0;
-	
+
 	Tcl_ListObjIndex(NULL, mounts, i, &mElt);
 
-	for (j = 0; j < gLength; j++) {
+	for (j=0 ; j<gLength ; j++) {
 	    Tcl_Obj *gElt;
-	    Tcl_ListObjIndex(NULL, result, j, &gElt);
+
+	    Tcl_ListObjIndex(NULL, resultPtr, j, &gElt);
 	    if (Tcl_FSEqualPaths(mElt, gElt)) {
 		found = 1;
 		if (!dir) {
-		    /* We don't want to list this */
-		    if (Tcl_IsShared(result)) {
-			Tcl_Obj *newList;
-			newList = Tcl_DuplicateObj(result);
-			Tcl_DecrRefCount(result);
-			result = newList;
-		    }
-		    Tcl_ListObjReplace(NULL, result, j, 1, 0, NULL);
+		    /*
+		     * We don't want to list this.
+		     */
+
+		    Tcl_ListObjReplace(NULL, resultPtr, j, 1, 0, NULL);
 		    gLength--;
 		}
-		/* Break out of for loop */
-		break;
+		break;		/* Break out of for loop */
 	    }
 	}
 	if (!found && dir) {
-	    if (Tcl_IsShared(result)) {
-		Tcl_Obj *newList;
-		newList = Tcl_DuplicateObj(result);
-		Tcl_DecrRefCount(result);
-		result = newList;
+	    Tcl_Obj *norm;
+	    int len, mlen;
+
+	    /*
+	     * We know mElt is absolute normalized and lies inside pathPtr, so
+	     * now we must add to the result the right representation of mElt,
+	     * i.e. the representation which is relative to pathPtr.
+	     */
+
+	    norm = Tcl_FSGetNormalizedPath(NULL, pathPtr);
+	    if (norm != NULL) {
+		const char *path, *mount;
+
+		mount = Tcl_GetStringFromObj(mElt, &mlen);
+		path = Tcl_GetStringFromObj(norm, &len);
+		if (path[len-1] == '/') {
+		    /*
+		     * Deal with the root of the volume.
+		     */
+
+		    len--;
+		}
+		len++; /* account for '/' in the mElt [Bug 1602539] */
+		mElt = TclNewFSPathObj(pathPtr, mount + len, mlen - len);
+		Tcl_ListObjAppendElement(NULL, resultPtr, mElt);
 	    }
-	    Tcl_ListObjAppendElement(NULL, result, mElt);
-	    /* 
-	     * No need to increment gLength, since we
-	     * don't want to compare mounts against
-	     * mounts.
+	    /*
+	     * No need to increment gLength, since we don't want to compare
+	     * mounts against mounts.
 	     */
 	}
     }
+
   endOfMounts:
     Tcl_DecrRefCount(mounts);
-    return result;
 }
 
 /*
@@ -1192,65 +1299,65 @@ FsAddMountsToGlobResult(result, pathPtr, pattern, types)
  *
  * Tcl_FSMountsChanged --
  *
- *    Notify the filesystem that the available mounted filesystems
- *    (or within any one filesystem type, the number or location of
- *    mount points) have changed.
+ *	Notify the filesystem that the available mounted filesystems (or
+ *	within any one filesystem type, the number or location of mount
+ *	points) have changed.
  *
  * Results:
- *    None.
+ *	None.
  *
  * Side effects:
- *    The global filesystem variable 'theFilesystemEpoch' is
- *    incremented.  The effect of this is to make all cached
- *    path representations invalid.  Clearly it should only therefore
- *    be called when it is really required!  There are a few 
- *    circumstances when it should be called:
- *    
- *    (1) when a new filesystem is registered or unregistered.  
- *    Strictly speaking this is only necessary if the new filesystem
- *    accepts file paths as is (normally the filesystem itself is
- *    really a shell which hasn't yet had any mount points established
- *    and so its 'pathInFilesystem' proc will always fail).  However,
- *    for safety, Tcl always calls this for you in these circumstances.
- * 
- *    (2) when additional mount points are established inside any
- *    existing filesystem (except the native fs)
- *    
- *    (3) when any filesystem (except the native fs) changes the list
- *    of available volumes.
- *    
- *    (4) when the mapping from a string representation of a file to
- *    a full, normalized path changes.  For example, if 'env(HOME)' 
- *    is modified, then any path containing '~' will map to a different
- *    filesystem location.  Therefore all such paths need to have
- *    their internal representation invalidated.
- *    
- *    Tcl has no control over (2) and (3), so any registered filesystem
- *    must make sure it calls this function when those situations
- *    occur.
- *    
- *    (Note: the reason for the exception in 2,3 for the native
- *    filesystem is that the native filesystem by default claims all
- *    unknown files even if it really doesn't understand them or if
- *    they don't exist).
+ *	The global filesystem variable 'theFilesystemEpoch' is incremented.
+ *	The effect of this is to make all cached path representations invalid.
+ *	Clearly it should only therefore be called when it is really required!
+ *	There are a few circumstances when it should be called:
+ *
+ *	(1) when a new filesystem is registered or unregistered. Strictly
+ *	speaking this is only necessary if the new filesystem accepts file
+ *	paths as is (normally the filesystem itself is really a shell which
+ *	hasn't yet had any mount points established and so its
+ *	'pathInFilesystem' proc will always fail). However, for safety, Tcl
+ *	always calls this for you in these circumstances.
+ *
+ *	(2) when additional mount points are established inside any existing
+ *	filesystem (except the native fs)
+ *
+ *	(3) when any filesystem (except the native fs) changes the list of
+ *	available volumes.
+ *
+ *	(4) when the mapping from a string representation of a file to a full,
+ *	normalized path changes. For example, if 'env(HOME)' is modified, then
+ *	any path containing '~' will map to a different filesystem location.
+ *	Therefore all such paths need to have their internal representation
+ *	invalidated.
+ *
+ *	Tcl has no control over (2) and (3), so any registered filesystem must
+ *	make sure it calls this function when those situations occur.
+ *
+ *	(Note: the reason for the exception in 2,3 for the native filesystem
+ *	is that the native filesystem by default claims all unknown files even
+ *	if it really doesn't understand them or if they don't exist).
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_FSMountsChanged(fsPtr)
-    Tcl_Filesystem *fsPtr;
+Tcl_FSMountsChanged(
+    Tcl_Filesystem *fsPtr)
 {
-    /* 
-     * We currently don't do anything with this parameter.  We
-     * could in the future only invalidate files for this filesystem
-     * or otherwise take more advanced action.
+    /*
+     * We currently don't do anything with this parameter. We could in the
+     * future only invalidate files for this filesystem or otherwise take more
+     * advanced action.
      */
+
     (void)fsPtr;
-    /* 
-     * Increment the filesystem epoch counter, since existing paths
-     * might now belong to different filesystems.
+
+    /*
+     * Increment the filesystem epoch counter, since existing paths might now
+     * belong to different filesystems.
      */
+
     Tcl_MutexLock(&filesystemMutex);
     theFilesystemEpoch++;
     Tcl_MutexUnlock(&filesystemMutex);
@@ -1261,31 +1368,31 @@ Tcl_FSMountsChanged(fsPtr)
  *
  * Tcl_FSData --
  *
- *    Retrieve the clientData field for the filesystem given,
- *    or NULL if that filesystem is not registered.
+ *	Retrieve the clientData field for the filesystem given, or NULL if
+ *	that filesystem is not registered.
  *
  * Results:
- *    A clientData value, or NULL.  Note that if the filesystem
- *    was registered with a NULL clientData field, this function
- *    will return that NULL value.
+ *	A clientData value, or NULL. Note that if the filesystem was
+ *	registered with a NULL clientData field, this function will return
+ *	that NULL value.
  *
  * Side effects:
- *    None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 ClientData
-Tcl_FSData(fsPtr)
-    Tcl_Filesystem  *fsPtr;   /* The filesystem record to query. */
+Tcl_FSData(
+    Tcl_Filesystem *fsPtr) /* The filesystem record to query. */
 {
     ClientData retVal = NULL;
     FilesystemRecord *fsRecPtr = FsGetFirstFilesystem();
 
     /*
-     * Traverse the 'filesystemList' looking for the particular node
-     * whose 'fsPtr' member matches 'fsPtr' and remove that one from
-     * the list.  Ensure that the "default" node cannot be removed.
+     * Traverse the list of filesystems look for a particular one. If found,
+     * return that filesystem's clientData (originally provided when calling
+     * Tcl_FSRegister).
      */
 
     while ((retVal == NULL) && (fsRecPtr != NULL)) {
@@ -1301,197 +1408,84 @@ Tcl_FSData(fsPtr)
 /*
  *---------------------------------------------------------------------------
  *
- * TclFSNormalizeAbsolutePath --
- *
- * Description:
- *	Takes an absolute path specification and computes a 'normalized'
- *	path from it.
- *	
- *	A normalized path is one which has all '../', './' removed.
- *	Also it is one which is in the 'standard' format for the native
- *	platform.  On MacOS, Unix, this means the path must be free of
- *	symbolic links/aliases, and on Windows it means we want the
- *	long form, with that long form's case-dependence (which gives
- *	us a unique, case-dependent path).
- *	
- *	The behaviour of this function if passed a non-absolute path
- *	is NOT defined.
- *
- * Results:
- *	The result is returned in a Tcl_Obj with a refCount of 1,
- *	which is therefore owned by the caller.  It must be
- *	freed (with Tcl_DecrRefCount) by the caller when no longer needed.
- *
- * Side effects:
- *	None (beyond the memory allocation for the result).
- *
- * Special note:
- *	This code is based on code from Matt Newman and Jean-Claude
- *	Wippler, with additions from Vince Darley and is copyright 
- *	those respective authors.
- *
- *---------------------------------------------------------------------------
- */
-static Tcl_Obj *
-TclFSNormalizeAbsolutePath(interp, pathPtr)
-    Tcl_Interp* interp;    /* Interpreter to use */
-    Tcl_Obj *pathPtr;      /* Absolute path to normalize */
-{
-    int splen = 0, nplen, eltLen, i;
-    char *eltName;
-    Tcl_Obj *retVal;
-    Tcl_Obj *split;
-    Tcl_Obj *elt;
-    
-    /* Split has refCount zero */
-    split = Tcl_FSSplitPath(pathPtr, &splen);
-
-    /* 
-     * Modify the list of entries in place, by removing '.', and
-     * removing '..' and the entry before -- unless that entry before
-     * is the top-level entry, i.e. the name of a volume.
-     */
-    nplen = 0;
-    for (i = 0; i < splen; i++) {
-	Tcl_ListObjIndex(NULL, split, nplen, &elt);
-	eltName = Tcl_GetStringFromObj(elt, &eltLen);
-
-	if ((eltLen == 1) && (eltName[0] == '.')) {
-	    Tcl_ListObjReplace(NULL, split, nplen, 1, 0, NULL);
-	} else if ((eltLen == 2)
-		&& (eltName[0] == '.') && (eltName[1] == '.')) {
-	    if (nplen > 1) {
-	        nplen--;
-		Tcl_ListObjReplace(NULL, split, nplen, 2, 0, NULL);
-	    } else {
-		Tcl_ListObjReplace(NULL, split, nplen, 1, 0, NULL);
-	    }
-	} else {
-	    nplen++;
-	}
-    }
-    if (nplen > 0) {
-	retVal = Tcl_FSJoinPath(split, nplen);
-	/* 
-	 * Now we have an absolute path, with no '..', '.' sequences,
-	 * but it still may not be in 'unique' form, depending on the
-	 * platform.  For instance, Unix is case-sensitive, so the
-	 * path is ok.  Windows is case-insensitive, and also has the
-	 * weird 'longname/shortname' thing (e.g. C:/Program Files/ and
-	 * C:/Progra~1/ are equivalent).  MacOS is case-insensitive.
-	 * 
-	 * Virtual file systems which may be registered may have
-	 * other criteria for normalizing a path.
-	 */
-	Tcl_IncrRefCount(retVal);
-	TclFSNormalizeToUniquePath(interp, retVal, 0);
-	/* 
-	 * Since we know it is a normalized path, we can
-	 * actually convert this object into an "path" object for
-	 * greater efficiency 
-	 */
-	TclFSMakePathFromNormalized(interp, retVal);
-    } else {
-	/* Init to an empty string */
-	retVal = Tcl_NewStringObj("",0);
-	Tcl_IncrRefCount(retVal);
-    }
-    /* 
-     * We increment and then decrement the refCount of split to free
-     * it.  We do this right at the end, in case there are
-     * optimisations in Tcl_FSJoinPath(split, nplen) above which would
-     * let it make use of split more effectively if it has a refCount
-     * of zero.  Also we can't just decrement the ref count, in case
-     * 'split' was actually returned by the join call above, in a
-     * single-element optimisation when nplen == 1.
-     */
-    Tcl_IncrRefCount(split);
-    Tcl_DecrRefCount(split);
-
-    /* This has a refCount of 1 for the caller */
-    return retVal;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
  * TclFSNormalizeToUniquePath --
  *
- * Description:
- *	Takes a path specification containing no ../, ./ sequences,
- *	and converts it into a unique path for the given platform.
- *      On MacOS, Unix, this means the path must be free of
- *	symbolic links/aliases, and on Windows it means we want the
- *	long form, with that long form's case-dependence (which gives
- *	us a unique, case-dependent path).
+ *	Takes a path specification containing no ../, ./ sequences, and
+ *	converts it into a unique path for the given platform. On Unix, this
+ *	means the path must be free of symbolic links/aliases, and on Windows
+ *	it means we want the long form, with that long form's case-dependence
+ *	(which gives us a unique, case-dependent path).
  *
  * Results:
- *	The pathPtr is modified in place.  The return value is
- *	the last byte offset which was recognised in the path
- *	string.
+ *	The pathPtr is modified in place. The return value is the last byte
+ *	offset which was recognised in the path string.
  *
  * Side effects:
  *	None (beyond the memory allocation for the result).
  *
  * Special notes:
- *	If the filesystem-specific normalizePathProcs can re-introduce
- *	../, ./ sequences into the path, then this function will
- *	not return the correct result.  This may be possible with
- *	symbolic links on unix/macos.
- *
- *      Important assumption: if startAt is non-zero, it must point
- *      to a directory separator that we know exists and is already
- *      normalized (so it is important not to point to the char just
- *      after the separator).
+ *	If the filesystem-specific normalizePathProcs can re-introduce ../, ./
+ *	sequences into the path, then this function will not return the
+ *	correct result. This may be possible with symbolic links on unix.
+ *
+ *	Important assumption: if startAt is non-zero, it must point to a
+ *	directory separator that we know exists and is already normalized (so
+ *	it is important not to point to the char just after the separator).
+ *
  *---------------------------------------------------------------------------
  */
+
 int
-TclFSNormalizeToUniquePath(interp, pathPtr, startAt)
-    Tcl_Interp *interp;
-    Tcl_Obj *pathPtr;
-    int startAt;
+TclFSNormalizeToUniquePath(
+    Tcl_Interp *interp,		/* Used for error messages. */
+    Tcl_Obj *pathPtr,		/* The path to normalize in place */
+    int startAt)		/* Start at this char-offset */
 {
     FilesystemRecord *fsRecPtr, *firstFsRecPtr;
-    
+
     /*
-     * Call each of the "normalise path" functions in succession. This is
-     * a special case, in which if we have a native filesystem handler,
-     * we call it first.  This is because the root of Tcl's filesystem
-     * is always a native filesystem (i.e. '/' on unix is native).
+     * Call each of the "normalise path" functions in succession. This is a
+     * special case, in which if we have a native filesystem handler, we call
+     * it first. This is because the root of Tcl's filesystem is always a
+     * native filesystem (i.e. '/' on unix is native).
      */
 
     firstFsRecPtr = FsGetFirstFilesystem();
 
+    Claim();
     fsRecPtr = firstFsRecPtr;
     while (fsRecPtr != NULL) {
-        if (fsRecPtr->fsPtr == &tclNativeFilesystem) {
+	if (fsRecPtr->fsPtr == &tclNativeFilesystem) {
 	    Tcl_FSNormalizePathProc *proc = fsRecPtr->fsPtr->normalizePathProc;
 	    if (proc != NULL) {
 		startAt = (*proc)(interp, pathPtr, startAt);
 	    }
 	    break;
-        }
+	}
 	fsRecPtr = fsRecPtr->nextPtr;
     }
-    
-    fsRecPtr = firstFsRecPtr; 
+
+    fsRecPtr = firstFsRecPtr;
     while (fsRecPtr != NULL) {
-	/* Skip the native system next time through */
+	/*
+	 * Skip the native system next time through.
+	 */
+
 	if (fsRecPtr->fsPtr != &tclNativeFilesystem) {
 	    Tcl_FSNormalizePathProc *proc = fsRecPtr->fsPtr->normalizePathProc;
 	    if (proc != NULL) {
 		startAt = (*proc)(interp, pathPtr, startAt);
 	    }
-	    /* 
+
+	    /*
 	     * We could add an efficiency check like this:
-	     * 
-	     *   if (retVal == length-of(pathPtr)) {break;}
-	     * 
+	     *		if (retVal == length-of(pathPtr)) {break;}
 	     * but there's not much benefit.
 	     */
 	}
 	fsRecPtr = fsRecPtr->nextPtr;
     }
+    Disclaim();
 
     return startAt;
 }
@@ -1501,10 +1495,40 @@ TclFSNormalizeToUniquePath(interp, pathPtr, startAt)
  *
  * TclGetOpenMode --
  *
- * Description:
+ *	This routine is an obsolete, limited version of TclGetOpenModeEx()
+ *	below. It exists only to satisfy any extensions imprudently using it
+ *	via Tcl's internal stubs table.
+ *
+ * Results:
+ *	Same as TclGetOpenModeEx().
+ *
+ * Side effects:
+ *	Same as TclGetOpenModeEx().
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclGetOpenMode(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting -
+				 * may be NULL. */
+    const char *modeString,	/* Mode string, e.g. "r+" or "RDONLY CREAT" */
+    int *seekFlagPtr)		/* Set this to 1 if the caller should seek to
+				 * EOF during the opening of the file. */
+{
+    int binary = 0;
+    return TclGetOpenModeEx(interp, modeString, seekFlagPtr, &binary);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclGetOpenModeEx --
+ *
  *	Computes a POSIX mode mask for opening a file, from a given string,
- *	and also sets a flag to indicate whether the caller should seek to
- *	EOF after opening the file.
+ *	and also sets flags to indicate whether the caller should seek to EOF
+ *	after opening the file, and whether the caller should configure the
+ *	channel for binary data.
  *
  * Results:
  *	On success, returns mode to pass to "open". If an error occurs, the
@@ -1512,37 +1536,41 @@ TclFSNormalizeToUniquePath(interp, pathPtr, startAt)
  *	object to an error message.
  *
  * Side effects:
- *	Sets the integer referenced by seekFlagPtr to 1 to tell the caller
- *	to seek to EOF after opening the file.
+ *	Sets the integer referenced by seekFlagPtr to 1 to tell the caller to
+ *	seek to EOF after opening the file, or to 0 otherwise. Sets the
+ *	integer referenced by binaryPtr to 1 to tell the caller to seek to
+ *	configure the channel for binary data, or to 0 otherwise.
  *
  * Special note:
- *	This code is based on a prototype implementation contributed
- *	by Mark Diekhans.
+ *	This code is based on a prototype implementation contributed by Mark
+ *	Diekhans.
  *
  *---------------------------------------------------------------------------
  */
 
 int
-TclGetOpenMode(interp, string, seekFlagPtr)
-    Tcl_Interp *interp;			/* Interpreter to use for error
-					 * reporting - may be NULL. */
-    CONST char *string;			/* Mode string, e.g. "r+" or
-					 * "RDONLY CREAT". */
-    int *seekFlagPtr;			/* Set this to 1 if the caller
-                                         * should seek to EOF during the
-                                         * opening of the file. */
+TclGetOpenModeEx(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting -
+				 * may be NULL. */
+    const char *modeString,	/* Mode string, e.g. "r+" or "RDONLY CREAT" */
+    int *seekFlagPtr,		/* Set this to 1 if the caller should seek to
+				 * EOF during the opening of the file. */
+    int *binaryPtr)		/* Set this to 1 if the caller should
+				 * configure the opened channel for binary
+				 * operations */
 {
     int mode, modeArgc, c, i, gotRW;
-    CONST char **modeArgv, *flag;
+    const char **modeArgv, *flag;
 #define RW_MODES (O_RDONLY|O_WRONLY|O_RDWR)
 
     /*
-     * Check for the simpler fopen-like access modes (e.g. "r").  They
-     * are distinguished from the POSIX access modes by the presence
-     * of a lower-case first letter.
+     * Check for the simpler fopen-like access modes (e.g. "r"). They are
+     * distinguished from the POSIX access modes by the presence of a
+     * lower-case first letter.
      */
 
     *seekFlagPtr = 0;
+    *binaryPtr = 0;
     mode = 0;
 
     /*
@@ -1550,66 +1578,82 @@ TclGetOpenMode(interp, string, seekFlagPtr)
      * routines.
      */
 
-    if (!(string[0] & 0x80)
-	    && islower(UCHAR(string[0]))) { /* INTL: ISO only. */
-	switch (string[0]) {
-	    case 'r':
-		mode = O_RDONLY;
-		break;
-	    case 'w':
-		mode = O_WRONLY|O_CREAT|O_TRUNC;
-		break;
-	    case 'a':
-	        /* [Bug 680143].
-		 * Added O_APPEND for proper automatic
-		 * seek-to-end-on-write by the OS.
+    if (!(modeString[0] & 0x80)
+	    && islower(UCHAR(modeString[0]))) { /* INTL: ISO only. */
+	switch (modeString[0]) {
+	case 'r':
+	    mode = O_RDONLY;
+	    break;
+	case 'w':
+	    mode = O_WRONLY|O_CREAT|O_TRUNC;
+	    break;
+	case 'a':
+	    /*
+	     * Added O_APPEND for proper automatic seek-to-end-on-write by the
+	     * OS. [Bug 680143]
+	     */
+
+	    mode = O_WRONLY|O_CREAT|O_APPEND;
+	    *seekFlagPtr = 1;
+	    break;
+	default:
+	    goto error;
+	}
+	i=1;
+	while (i<3 && modeString[i]) {
+	    if (modeString[i] == modeString[i-1]) {
+		goto error;
+	    }
+	    switch (modeString[i++]) {
+	    case '+':
+		/*
+		 * Must remove the O_APPEND flag so that the seek command
+		 * works. [Bug 1773127]
 		 */
-	        mode = O_WRONLY|O_CREAT|O_APPEND;
-                *seekFlagPtr = 1;
+
+		mode &= ~(O_RDONLY|O_WRONLY|O_APPEND);
+		mode |= O_RDWR;
+		break;
+	    case 'b':
+		*binaryPtr = 1;
 		break;
 	    default:
-		error:
-                if (interp != (Tcl_Interp *) NULL) {
-                    Tcl_AppendResult(interp,
-                            "illegal access mode \"", string, "\"",
-                            (char *) NULL);
-                }
-		return -1;
-	}
-	if (string[1] == '+') {
-	    /*
-	     * Must remove the O_APPEND flag so that the seek command
-	     * works. [Bug 1773127]
-	     */
-	    mode &= ~(O_RDONLY|O_WRONLY|O_APPEND);
-	    mode |= O_RDWR;
-	    if (string[2] != 0) {
 		goto error;
 	    }
-	} else if (string[1] != 0) {
+	}
+	if (modeString[i] != 0) {
 	    goto error;
 	}
-        return mode;
+	return mode;
+
+    error:
+	*seekFlagPtr = 0;
+	*binaryPtr = 0;
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "illegal access mode \"", modeString,
+		    "\"", NULL);
+	}
+	return -1;
     }
 
     /*
-     * The access modes are specified using a list of POSIX modes
-     * such as O_CREAT.
+     * The access modes are specified using a list of POSIX modes such as
+     * O_CREAT.
      *
-     * IMPORTANT NOTE: We rely on Tcl_SplitList working correctly when
-     * a NULL interpreter is passed in.
+     * IMPORTANT NOTE: We rely on Tcl_SplitList working correctly when a NULL
+     * interpreter is passed in.
      */
 
-    if (Tcl_SplitList(interp, string, &modeArgc, &modeArgv) != TCL_OK) {
-        if (interp != (Tcl_Interp *) NULL) {
-            Tcl_AddErrorInfo(interp,
-                    "\n    while processing open access modes \"");
-            Tcl_AddErrorInfo(interp, string);
-            Tcl_AddErrorInfo(interp, "\"");
-        }
-        return -1;
+    if (Tcl_SplitList(interp, modeString, &modeArgc, &modeArgv) != TCL_OK) {
+	if (interp != NULL) {
+	    Tcl_AddErrorInfo(interp,
+		    "\n    while processing open access modes \"");
+	    Tcl_AddErrorInfo(interp, modeString);
+	    Tcl_AddErrorInfo(interp, "\"");
+	}
+	return -1;
     }
-    
+
     gotRW = 0;
     for (i = 0; i < modeArgc; i++) {
 	flag = modeArgv[i];
@@ -1625,88 +1669,106 @@ TclGetOpenMode(interp, string, seekFlagPtr)
 	    gotRW = 1;
 	} else if ((c == 'A') && (strcmp(flag, "APPEND") == 0)) {
 	    mode |= O_APPEND;
-            *seekFlagPtr = 1;
+	    *seekFlagPtr = 1;
 	} else if ((c == 'C') && (strcmp(flag, "CREAT") == 0)) {
 	    mode |= O_CREAT;
 	} else if ((c == 'E') && (strcmp(flag, "EXCL") == 0)) {
 	    mode |= O_EXCL;
+
 	} else if ((c == 'N') && (strcmp(flag, "NOCTTY") == 0)) {
 #ifdef O_NOCTTY
 	    mode |= O_NOCTTY;
 #else
-	    if (interp != (Tcl_Interp *) NULL) {
-                Tcl_AppendResult(interp, "access mode \"", flag,
-                        "\" not supported by this system", (char *) NULL);
-            }
-            ckfree((char *) modeArgv);
+	    if (interp != NULL) {
+		Tcl_AppendResult(interp, "access mode \"", flag,
+			"\" not supported by this system", NULL);
+	    }
+	    ckfree((char *) modeArgv);
 	    return -1;
 #endif
+
 	} else if ((c == 'N') && (strcmp(flag, "NONBLOCK") == 0)) {
-#if defined(O_NDELAY) || defined(O_NONBLOCK)
-#   ifdef O_NONBLOCK
+#ifdef O_NONBLOCK
 	    mode |= O_NONBLOCK;
-#   else
-	    mode |= O_NDELAY;
-#   endif
 #else
-            if (interp != (Tcl_Interp *) NULL) {
-                Tcl_AppendResult(interp, "access mode \"", flag,
-                        "\" not supported by this system", (char *) NULL);
-            }
-            ckfree((char *) modeArgv);
+	    if (interp != NULL) {
+		Tcl_AppendResult(interp, "access mode \"", flag,
+			"\" not supported by this system", NULL);
+	    }
+	    ckfree((char *) modeArgv);
 	    return -1;
 #endif
+
 	} else if ((c == 'T') && (strcmp(flag, "TRUNC") == 0)) {
 	    mode |= O_TRUNC;
+	} else if ((c == 'B') && (strcmp(flag, "BINARY") == 0)) {
+	    *binaryPtr = 1;
 	} else {
-            if (interp != (Tcl_Interp *) NULL) {
-                Tcl_AppendResult(interp, "invalid access mode \"", flag,
-                        "\": must be RDONLY, WRONLY, RDWR, APPEND, CREAT",
-                        " EXCL, NOCTTY, NONBLOCK, or TRUNC", (char *) NULL);
-            }
+
+	    if (interp != NULL) {
+		Tcl_AppendResult(interp, "invalid access mode \"", flag,
+			"\": must be RDONLY, WRONLY, RDWR, APPEND, BINARY, "
+			"CREAT, EXCL, NOCTTY, NONBLOCK, or TRUNC", NULL);
+	    }
 	    ckfree((char *) modeArgv);
 	    return -1;
 	}
     }
+
     ckfree((char *) modeArgv);
+
     if (!gotRW) {
-        if (interp != (Tcl_Interp *) NULL) {
-            Tcl_AppendResult(interp, "access mode must include either",
-                    " RDONLY, WRONLY, or RDWR", (char *) NULL);
-        }
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "access mode must include either"
+		    " RDONLY, WRONLY, or RDWR", NULL);
+	}
 	return -1;
     }
     return mode;
 }
 
 /*
+ * Tcl_FSEvalFile is Tcl_FSEvalFileEx without encoding argument.
+ */
+
+int
+Tcl_FSEvalFile(
+    Tcl_Interp *interp,		/* Interpreter in which to process file. */
+    Tcl_Obj *pathPtr)		/* Path of file to process. Tilde-substitution
+				 * will be performed on this name. */
+{
+    return Tcl_FSEvalFileEx(interp, pathPtr, NULL);
+}
+
+/*
  *----------------------------------------------------------------------
  *
- * Tcl_FSEvalFile --
+ * Tcl_FSEvalFileEx --
  *
- *	Read in a file and process the entire file as one gigantic
- *	Tcl command.
+ *	Read in a file and process the entire file as one gigantic Tcl
+ *	command.
  *
  * Results:
- *	A standard Tcl result, which is either the result of executing
- *	the file or an error indicating why the file couldn't be read.
+ *	A standard Tcl result, which is either the result of executing the
+ *	file or an error indicating why the file couldn't be read.
  *
  * Side effects:
- *	Depends on the commands in the file.  During the evaluation
- *	of the contents of the file, iPtr->scriptFile is made to
- *	point to pathPtr (the old value is cached and replaced when
- *	this function returns).
+ *	Depends on the commands in the file. During the evaluation of the
+ *	contents of the file, iPtr->scriptFile is made to point to pathPtr
+ *	(the old value is cached and replaced when this function returns).
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSEvalFile(interp, pathPtr)
-    Tcl_Interp *interp;		/* Interpreter in which to process file. */
-    Tcl_Obj *pathPtr;		/* Path of file to process.  Tilde-substitution
+Tcl_FSEvalFileEx(
+    Tcl_Interp *interp,		/* Interpreter in which to process file. */
+    Tcl_Obj *pathPtr,		/* Path of file to process. Tilde-substitution
 				 * will be performed on this name. */
+    const char *encodingName)	/* If non-NULL, then use this encoding for the
+				 * file. NULL means use the system encoding. */
 {
-    int result, length;
+    int length, result = TCL_ERROR;
     Tcl_StatBuf statBuf;
     Tcl_Obj *oldScriptFile;
     Interp *iPtr;
@@ -1715,41 +1777,52 @@ Tcl_FSEvalFile(interp, pathPtr)
     Tcl_Obj *objPtr;
 
     if (Tcl_FSGetNormalizedPath(interp, pathPtr) == NULL) {
-	return TCL_ERROR;
+	return result;
     }
 
-    result = TCL_ERROR;
-    objPtr = Tcl_NewObj();
-    Tcl_IncrRefCount(objPtr);
-
     if (Tcl_FSStat(pathPtr, &statBuf) == -1) {
-        Tcl_SetErrno(errno);
-	Tcl_AppendResult(interp, "couldn't read file \"", 
-		Tcl_GetString(pathPtr),
-		"\": ", Tcl_PosixError(interp), (char *) NULL);
-	goto end;
+	Tcl_SetErrno(errno);
+	Tcl_AppendResult(interp, "couldn't read file \"",
+		Tcl_GetString(pathPtr), "\": ", Tcl_PosixError(interp), NULL);
+	return result;
     }
     chan = Tcl_FSOpenFileChannel(interp, pathPtr, "r", 0644);
     if (chan == (Tcl_Channel) NULL) {
-        Tcl_ResetResult(interp);
-	Tcl_AppendResult(interp, "couldn't read file \"", 
-		Tcl_GetString(pathPtr),
-		"\": ", Tcl_PosixError(interp), (char *) NULL);
-	goto end;
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "couldn't read file \"",
+		Tcl_GetString(pathPtr), "\": ", Tcl_PosixError(interp), NULL);
+	return result;
     }
+
     /*
-     * The eofchar is \32 (^Z).  This is the usual on Windows, but we
-     * effect this cross-platform to allow for scripted documents.
-     * [Bug: 2040]
+     * The eofchar is \32 (^Z). This is the usual on Windows, but we effect
+     * this cross-platform to allow for scripted documents. [Bug: 2040]
      */
+
     Tcl_SetChannelOption(interp, chan, "-eofchar", "\32");
+
+    /*
+     * If the encoding is specified, set it for the channel. Else don't touch
+     * it (and use the system encoding) Report error on unknown encoding.
+     */
+
+    if (encodingName != NULL) {
+	if (Tcl_SetChannelOption(interp, chan, "-encoding", encodingName)
+		!= TCL_OK) {
+	    Tcl_Close(interp,chan);
+	    return result;
+	}
+    }
+
+    objPtr = Tcl_NewObj();
+    Tcl_IncrRefCount(objPtr);
     /* Try to read first character of stream, so we can
      * check for utf-8 BOM to be handled especially.
      */
     if (Tcl_ReadChars(chan, objPtr, 1, 0) < 0) {
 	Tcl_Close(interp, chan);
-	Tcl_AppendResult(interp, "couldn't read file \"", 
-		Tcl_GetString(pathPtr),	"\": ", Tcl_PosixError(interp), NULL);
+	Tcl_AppendResult(interp, "couldn't read file \"",
+		Tcl_GetString(pathPtr), "\": ", Tcl_PosixError(interp), NULL);
 	goto end;
     }
     string = Tcl_GetString(objPtr);
@@ -1764,8 +1837,9 @@ Tcl_FSEvalFile(interp, pathPtr)
 		Tcl_GetString(pathPtr), "\": ", Tcl_PosixError(interp), NULL);
 	goto end;
     }
+
     if (Tcl_Close(interp, chan) != TCL_OK) {
-        goto end;
+	goto end;
     }
 
     iPtr = (Interp *) interp;
@@ -1773,18 +1847,17 @@ Tcl_FSEvalFile(interp, pathPtr)
     iPtr->scriptFile = pathPtr;
     Tcl_IncrRefCount(iPtr->scriptFile);
     string = Tcl_GetStringFromObj(objPtr, &length);
-
-#ifdef TCL_TIP280
     /* TIP #280 Force the evaluator to open a frame for a sourced
      * file. */
     iPtr->evalFlags |= TCL_EVAL_FILE;
-#endif
     result = Tcl_EvalEx(interp, string, length, 0);
-    /* 
+
+    /*
      * Now we have to be careful; the script may have changed the
-     * iPtr->scriptFile value, so we must reset it without
-     * assuming it still points to 'pathPtr'.
+     * iPtr->scriptFile value, so we must reset it without assuming it still
+     * points to 'pathPtr'.
      */
+
     if (iPtr->scriptFile != NULL) {
 	Tcl_DecrRefCount(iPtr->scriptFile);
     }
@@ -1793,18 +1866,21 @@ Tcl_FSEvalFile(interp, pathPtr)
     if (result == TCL_RETURN) {
 	result = TclUpdateReturnInfo(iPtr);
     } else if (result == TCL_ERROR) {
-	char msg[200 + TCL_INTEGER_SPACE];
-
 	/*
 	 * Record information telling where the error occurred.
 	 */
 
-	sprintf(msg, "\n    (file \"%.150s\" line %d)", Tcl_GetString(pathPtr),
-		interp->errorLine);
-	Tcl_AddErrorInfo(interp, msg);
+	const char *pathString = Tcl_GetStringFromObj(pathPtr, &length);
+	int limit = 150;
+	int overflow = (length > limit);
+
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (file \"%.*s%s\" line %d)",
+		(overflow ? limit : length), pathString,
+		(overflow ? "..." : ""), interp->errorLine));
     }
 
-    end:
+  end:
     Tcl_DecrRefCount(objPtr);
     return result;
 }
@@ -1815,21 +1891,21 @@ Tcl_FSEvalFile(interp, pathPtr)
  * Tcl_GetErrno --
  *
  *	Gets the current value of the Tcl error code variable. This is
- *	currently the global variable "errno" but could in the future
- *	change to something else.
+ *	currently the global variable "errno" but could in the future change
+ *	to something else.
  *
  * Results:
  *	The value of the Tcl error code variable.
  *
  * Side effects:
- *	None. Note that the value of the Tcl error code variable is
- *	UNDEFINED if a call to Tcl_SetErrno did not precede this call.
+ *	None. Note that the value of the Tcl error code variable is UNDEFINED
+ *	if a call to Tcl_SetErrno did not precede this call.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetErrno()
+Tcl_GetErrno(void)
 {
     return errno;
 }
@@ -1851,8 +1927,8 @@ Tcl_GetErrno()
  */
 
 void
-Tcl_SetErrno(err)
-    int err;			/* The new value. */
+Tcl_SetErrno(
+    int err)			/* The new value. */
 {
     errno = err;
 }
@@ -1862,32 +1938,31 @@ Tcl_SetErrno(err)
  *
  * Tcl_PosixError --
  *
- *	This procedure is typically called after UNIX kernel calls
- *	return errors.  It stores machine-readable information about
- *	the error in $errorCode returns an information string for
- *	the caller's use.
+ *	This function is typically called after UNIX kernel calls return
+ *	errors. It stores machine-readable information about the error in
+ *	errorCode field of interp and returns an information string for the
+ *	caller's use.
  *
  * Results:
- *	The return value is a human-readable string describing the
- *	error.
+ *	The return value is a human-readable string describing the error.
  *
  * Side effects:
- *	The global variable $errorCode is reset.
+ *	The errorCode field of the interp is set.
  *
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_PosixError(interp)
-    Tcl_Interp *interp;		/* Interpreter whose $errorCode variable
-				 * is to be changed. */
+const char *
+Tcl_PosixError(
+    Tcl_Interp *interp)		/* Interpreter whose errorCode field is to be
+				 * set. */
 {
-    CONST char *id, *msg;
+    const char *id, *msg;
 
     msg = Tcl_ErrnoMsg(errno);
     id = Tcl_ErrnoId();
     if (interp) {
-	Tcl_SetErrorCode(interp, "POSIX", id, msg, (char *) NULL);
+	Tcl_SetErrorCode(interp, "POSIX", id, msg, NULL);
     }
     return msg;
 }
@@ -1897,37 +1972,37 @@ Tcl_PosixError(interp)
  *
  * Tcl_FSStat --
  *
- *	This procedure replaces the library version of stat and lsat.
- *	
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	This function replaces the library version of stat and lsat.
+ *
+ *	The appropriate function for the filesystem to which pathPtr belongs
+ *	will be called.
  *
  * Results:
- *      See stat documentation.
+ *	See stat documentation.
  *
  * Side effects:
- *      See stat documentation.
+ *	See stat documentation.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSStat(pathPtr, buf)
-    Tcl_Obj *pathPtr;		/* Path of file to stat (in current CP). */
-    Tcl_StatBuf *buf;		/* Filled with results of stat call. */
+Tcl_FSStat(
+    Tcl_Obj *pathPtr,		/* Path of file to stat (in current CP). */
+    Tcl_StatBuf *buf)		/* Filled with results of stat call. */
 {
-    Tcl_Filesystem *fsPtr;
+    const Tcl_Filesystem *fsPtr;
 #ifdef USE_OBSOLETE_FS_HOOKS
-    Tcl_StatBuf oldStyleStatBuffer;
+    struct stat oldStyleStatBuffer;
     int retVal = -1;
 
     /*
-     * Call each of the "stat" function in succession.  A non-return
-     * value of -1 indicates the particular function has succeeded.
+     * Call each of the "stat" function in succession. A non-return value of
+     * -1 indicates the particular function has succeeded.
      */
 
     Tcl_MutexLock(&obsoleteFsHookMutex);
-    
+
     if (statProcList != NULL) {
 	StatProc *statProcPtr;
 	char *path;
@@ -1947,13 +2022,14 @@ Tcl_FSStat(pathPtr, buf)
 	    Tcl_DecrRefCount(transPtr);
 	}
     }
-    
+
     Tcl_MutexUnlock(&obsoleteFsHookMutex);
     if (retVal != -1) {
 	/*
-	 * Note that EOVERFLOW is not a problem here, and these
-	 * assignments should all be widening (if not identity.)
+	 * Note that EOVERFLOW is not a problem here, and these assignments
+	 * should all be widening (if not identity.)
 	 */
+
 	buf->st_mode = oldStyleStatBuffer.st_mode;
 	buf->st_ino = oldStyleStatBuffer.st_ino;
 	buf->st_dev = oldStyleStatBuffer.st_dev;
@@ -1965,13 +2041,16 @@ Tcl_FSStat(pathPtr, buf)
 	buf->st_atime = oldStyleStatBuffer.st_atime;
 	buf->st_mtime = oldStyleStatBuffer.st_mtime;
 	buf->st_ctime = oldStyleStatBuffer.st_ctime;
-#ifdef HAVE_ST_BLOCKS
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
 	buf->st_blksize = oldStyleStatBuffer.st_blksize;
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
 	buf->st_blocks = Tcl_LongAsWide(oldStyleStatBuffer.st_blocks);
 #endif
-        return retVal;
+	return retVal;
     }
 #endif /* USE_OBSOLETE_FS_HOOKS */
+
     fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSStatProc *proc = fsPtr->statProc;
@@ -1988,27 +2067,26 @@ Tcl_FSStat(pathPtr, buf)
  *
  * Tcl_FSLstat --
  *
- *	This procedure replaces the library version of lstat.
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.  If no 'lstat' function is listed,
- *	but a 'stat' function is, then Tcl will fall back on the
- *	stat function.
+ *	This function replaces the library version of lstat. The appropriate
+ *	function for the filesystem to which pathPtr belongs will be called.
+ *	If no 'lstat' function is listed, but a 'stat' function is, then Tcl
+ *	will fall back on the stat function.
  *
  * Results:
- *      See lstat documentation.
+ *	See lstat documentation.
  *
  * Side effects:
- *      See lstat documentation.
+ *	See lstat documentation.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSLstat(pathPtr, buf)
-    Tcl_Obj *pathPtr;		/* Path of file to stat (in current CP). */
-    Tcl_StatBuf *buf;		/* Filled with results of stat call. */
+Tcl_FSLstat(
+    Tcl_Obj *pathPtr,		/* Path of file to stat (in current CP). */
+    Tcl_StatBuf *buf)		/* Filled with results of stat call. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSLstatProc *proc = fsPtr->lstatProc;
 	if (proc != NULL) {
@@ -2029,31 +2107,30 @@ Tcl_FSLstat(pathPtr, buf)
  *
  * Tcl_FSAccess --
  *
- *	This procedure replaces the library version of access.
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	This function replaces the library version of access. The appropriate
+ *	function for the filesystem to which pathPtr belongs will be called.
  *
  * Results:
- *      See access documentation.
+ *	See access documentation.
  *
  * Side effects:
- *      See access documentation.
+ *	See access documentation.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSAccess(pathPtr, mode)
-    Tcl_Obj *pathPtr;		/* Path of file to access (in current CP). */
-    int mode;                   /* Permission setting. */
+Tcl_FSAccess(
+    Tcl_Obj *pathPtr,		/* Path of file to access (in current CP). */
+    int mode)			/* Permission setting. */
 {
-    Tcl_Filesystem *fsPtr;
+    const Tcl_Filesystem *fsPtr;
 #ifdef USE_OBSOLETE_FS_HOOKS
     int retVal = -1;
 
     /*
-     * Call each of the "access" function in succession.  A non-return
-     * value of -1 indicates the particular function has succeeded.
+     * Call each of the "access" function in succession. A non-return value of
+     * -1 indicates the particular function has succeeded.
      */
 
     Tcl_MutexLock(&obsoleteFsHookMutex);
@@ -2077,12 +2154,13 @@ Tcl_FSAccess(pathPtr, mode)
 	    Tcl_DecrRefCount(transPtr);
 	}
     }
-    
+
     Tcl_MutexUnlock(&obsoleteFsHookMutex);
     if (retVal != -1) {
 	return retVal;
     }
 #endif /* USE_OBSOLETE_FS_HOOKS */
+
     fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSAccessProc *proc = fsPtr->accessProc;
@@ -2100,38 +2178,36 @@ Tcl_FSAccess(pathPtr, mode)
  *
  * Tcl_FSOpenFileChannel --
  *
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	The appropriate function for the filesystem to which pathPtr belongs
+ *	will be called.
  *
  * Results:
  *	The new channel or NULL, if the named file could not be opened.
  *
  * Side effects:
- *	May open the channel and may cause creation of a file on the
- *	file system.
+ *	May open the channel and may cause creation of a file on the file
+ *	system.
  *
  *----------------------------------------------------------------------
  */
- 
+
 Tcl_Channel
-Tcl_FSOpenFileChannel(interp, pathPtr, modeString, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-                                         * can be NULL. */
-    Tcl_Obj *pathPtr;                   /* Name of file to open. */
-    CONST char *modeString;             /* A list of POSIX open modes or
-                                         * a string such as "rw". */
-    int permissions;                    /* If the open involves creating a
-                                         * file, with what modes to create
-                                         * it? */
+Tcl_FSOpenFileChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    Tcl_Obj *pathPtr,		/* Name of file to open. */
+    const char *modeString,	/* A list of POSIX open modes or a string such
+				 * as "rw". */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
 {
-    Tcl_Filesystem *fsPtr;
-#ifdef USE_OBSOLETE_FS_HOOKS
+    const Tcl_Filesystem *fsPtr;
     Tcl_Channel retVal = NULL;
 
+#ifdef USE_OBSOLETE_FS_HOOKS
     /*
-     * Call each of the "Tcl_OpenFileChannel" functions in succession.
-     * A non-NULL return value indicates the particular function has
-     * succeeded.
+     * Call each of the "Tcl_OpenFileChannel" functions in succession. A
+     * non-NULL return value indicates the particular function has succeeded.
      */
 
     Tcl_MutexLock(&obsoleteFsHookMutex);
@@ -2139,7 +2215,7 @@ Tcl_FSOpenFileChannel(interp, pathPtr, modeString, permissions)
 	OpenFileChannelProc *openFileChannelProcPtr;
 	char *path;
 	Tcl_Obj *transPtr = Tcl_FSGetTranslatedPath(interp, pathPtr);
-	
+
 	if (transPtr == NULL) {
 	    path = NULL;
 	} else {
@@ -2147,10 +2223,10 @@ Tcl_FSOpenFileChannel(interp, pathPtr, modeString, permissions)
 	}
 
 	openFileChannelProcPtr = openFileChannelProcList;
-	
+
 	while ((retVal == NULL) && (openFileChannelProcPtr != NULL)) {
 	    retVal = (*openFileChannelProcPtr->proc)(interp, path,
-						     modeString, permissions);
+		    modeString, permissions);
 	    openFileChannelProcPtr = openFileChannelProcPtr->nextPtr;
 	}
 	if (transPtr != NULL) {
@@ -2162,49 +2238,70 @@ Tcl_FSOpenFileChannel(interp, pathPtr, modeString, permissions)
 	return retVal;
     }
 #endif /* USE_OBSOLETE_FS_HOOKS */
-    
-    /* 
-     * We need this just to ensure we return the correct error messages
-     * under some circumstances.
+
+    /*
+     * We need this just to ensure we return the correct error messages under
+     * some circumstances.
      */
+
     if (Tcl_FSGetNormalizedPath(interp, pathPtr) == NULL) {
-        return NULL;
+	return NULL;
     }
-    
+
     fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSOpenFileChannelProc *proc = fsPtr->openFileChannelProc;
 	if (proc != NULL) {
-	    int mode, seekFlag;
-	    mode = TclGetOpenMode(interp, modeString, &seekFlag);
+	    int mode, seekFlag, binary;
+
+	    /*
+	     * Parse the mode, picking up whether we want to seek to start
+	     * with and/or set the channel automatically into binary mode.
+	     */
+
+	    mode = TclGetOpenModeEx(interp, modeString, &seekFlag, &binary);
 	    if (mode == -1) {
-	        return NULL;
+		return NULL;
 	    }
+
+	    /*
+	     * Do the actual open() call.
+	     */
+
 	    retVal = (*proc)(interp, pathPtr, mode, permissions);
-	    if (retVal != NULL) {
-		if (seekFlag) {
-		    if (Tcl_Seek(retVal, (Tcl_WideInt)0, 
-				 SEEK_END) < (Tcl_WideInt)0) {
-			if (interp != (Tcl_Interp *) NULL) {
-			    Tcl_AppendResult(interp,
-			      "could not seek to end of file while opening \"",
-			      Tcl_GetString(pathPtr), "\": ", 
-			      Tcl_PosixError(interp), (char *) NULL);
-			}
-			Tcl_Close(NULL, retVal);
-			return NULL;
-		    }
+	    if (retVal == NULL) {
+		return NULL;
+	    }
+
+	    /*
+	     * Apply appropriate flags parsed out above.
+	     */
+
+	    if (seekFlag && Tcl_Seek(retVal, (Tcl_WideInt)0,
+		    SEEK_END) < (Tcl_WideInt)0) {
+		if (interp != NULL) {
+		    Tcl_AppendResult(interp, "could not seek to end "
+			    "of file while opening \"", Tcl_GetString(pathPtr),
+			    "\": ", Tcl_PosixError(interp), NULL);
 		}
+		Tcl_Close(NULL, retVal);
+		return NULL;
+	    }
+	    if (binary) {
+		Tcl_SetChannelOption(interp, retVal, "-translation", "binary");
 	    }
 	    return retVal;
 	}
     }
-    /* File doesn't belong to any filesystem that can open it */
+
+    /*
+     * File doesn't belong to any filesystem that can open it.
+     */
+
     Tcl_SetErrno(ENOENT);
     if (interp != NULL) {
-	Tcl_AppendResult(interp, "couldn't open \"", 
-			 Tcl_GetString(pathPtr), "\": ",
-			 Tcl_PosixError(interp), (char *) NULL);
+	Tcl_AppendResult(interp, "couldn't open \"", Tcl_GetString(pathPtr),
+		"\": ", Tcl_PosixError(interp), NULL);
     }
     return NULL;
 }
@@ -2214,26 +2311,25 @@ Tcl_FSOpenFileChannel(interp, pathPtr, modeString, permissions)
  *
  * Tcl_FSUtime --
  *
- *	This procedure replaces the library version of utime.
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	This function replaces the library version of utime. The appropriate
+ *	function for the filesystem to which pathPtr belongs will be called.
  *
  * Results:
- *      See utime documentation.
+ *	See utime documentation.
  *
  * Side effects:
- *      See utime documentation.
+ *	See utime documentation.
  *
  *----------------------------------------------------------------------
  */
 
-int 
-Tcl_FSUtime (pathPtr, tval)
-    Tcl_Obj *pathPtr;       /* File to change access/modification times */
-    struct utimbuf *tval;   /* Structure containing access/modification 
-                             * times to use.  Should not be modified. */
+int
+Tcl_FSUtime(
+    Tcl_Obj *pathPtr,		/* File to change access/modification times */
+    struct utimbuf *tval)	/* Structure containing access/modification
+				 * times to use. Should not be modified. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSUtimeProc *proc = fsPtr->utimeProc;
 	if (proc != NULL) {
@@ -2248,25 +2344,25 @@ Tcl_FSUtime (pathPtr, tval)
  *
  * NativeFileAttrStrings --
  *
- *	This procedure implements the platform dependent 'file
- *	attributes' subcommand, for the native filesystem, for listing
- *	the set of possible attribute strings.  This function is part
- *	of Tcl's native filesystem support, and is placed here because
- *	it is shared by Unix, MacOS and Windows code.
+ *	This function implements the platform dependent 'file attributes'
+ *	subcommand, for the native filesystem, for listing the set of possible
+ *	attribute strings. This function is part of Tcl's native filesystem
+ *	support, and is placed here because it is shared by Unix and Windows
+ *	code.
  *
  * Results:
- *      An array of strings
+ *	An array of strings
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
-static CONST char**
-NativeFileAttrStrings(pathPtr, objPtrRef)
-    Tcl_Obj *pathPtr;
-    Tcl_Obj** objPtrRef;
+static const char **
+NativeFileAttrStrings(
+    Tcl_Obj *pathPtr,
+    Tcl_Obj **objPtrRef)
 {
     return tclpFileAttrStrings;
 }
@@ -2276,34 +2372,32 @@ NativeFileAttrStrings(pathPtr, objPtrRef)
  *
  * NativeFileAttrsGet --
  *
- *	This procedure implements the platform dependent
- *	'file attributes' subcommand, for the native
- *	filesystem, for 'get' operations.  This function is part
- *	of Tcl's native filesystem support, and is placed here
- *	because it is shared by Unix, MacOS and Windows code.
+ *	This function implements the platform dependent 'file attributes'
+ *	subcommand, for the native filesystem, for 'get' operations. This
+ *	function is part of Tcl's native filesystem support, and is placed
+ *	here because it is shared by Unix and Windows code.
  *
  * Results:
- *      Standard Tcl return code.  The object placed in objPtrRef
- *      (if TCL_OK was returned) is likely to have a refCount of zero.
- *      Either way we must either store it somewhere (e.g. the Tcl 
- *      result), or Incr/Decr its refCount to ensure it is properly
- *      freed.
+ *	Standard Tcl return code. The object placed in objPtrRef (if TCL_OK
+ *	was returned) is likely to have a refCount of zero. Either way we must
+ *	either store it somewhere (e.g. the Tcl result), or Incr/Decr its
+ *	refCount to ensure it is properly freed.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NativeFileAttrsGet(interp, index, pathPtr, objPtrRef)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int index;			/* index of the attribute command. */
-    Tcl_Obj *pathPtr;		/* path of file we are operating on. */
-    Tcl_Obj **objPtrRef;	/* for output. */
+NativeFileAttrsGet(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int index,			/* index of the attribute command. */
+    Tcl_Obj *pathPtr,		/* path of file we are operating on. */
+    Tcl_Obj **objPtrRef)	/* for output. */
 {
-    return (*tclpFileAttrProcs[index].getProc)(interp, index, 
-					       pathPtr, objPtrRef);
+    return (*tclpFileAttrProcs[index].getProc)(interp, index, pathPtr,
+	    objPtrRef);
 }
 
 /*
@@ -2311,30 +2405,28 @@ NativeFileAttrsGet(interp, index, pathPtr, objPtrRef)
  *
  * NativeFileAttrsSet --
  *
- *	This procedure implements the platform dependent
- *	'file attributes' subcommand, for the native
- *	filesystem, for 'set' operations. This function is part
- *	of Tcl's native filesystem support, and is placed here
- *	because it is shared by Unix, MacOS and Windows code.
+ *	This function implements the platform dependent 'file attributes'
+ *	subcommand, for the native filesystem, for 'set' operations. This
+ *	function is part of Tcl's native filesystem support, and is placed
+ *	here because it is shared by Unix and Windows code.
  *
  * Results:
- *      Standard Tcl return code.
+ *	Standard Tcl return code.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NativeFileAttrsSet(interp, index, pathPtr, objPtr)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int index;			/* index of the attribute command. */
-    Tcl_Obj *pathPtr;		/* path of file we are operating on. */
-    Tcl_Obj *objPtr;		/* set to this value. */
+NativeFileAttrsSet(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int index,			/* index of the attribute command. */
+    Tcl_Obj *pathPtr,		/* path of file we are operating on. */
+    Tcl_Obj *objPtr)		/* set to this value. */
 {
-    return (*tclpFileAttrProcs[index].setProc)(interp, index,
-					       pathPtr, objPtr);
+    return (*tclpFileAttrProcs[index].setProc)(interp, index, pathPtr, objPtr);
 }
 
 /*
@@ -2342,32 +2434,32 @@ NativeFileAttrsSet(interp, index, pathPtr, objPtr)
  *
  * Tcl_FSFileAttrStrings --
  *
- *	This procedure implements part of the hookable 'file
- *	attributes' subcommand.  The appropriate function for the
- *	filesystem to which pathPtr belongs will be called.
+ *	This function implements part of the hookable 'file attributes'
+ *	subcommand. The appropriate function for the filesystem to which
+ *	pathPtr belongs will be called.
  *
  * Results:
- *      The called procedure may either return an array of strings,
- *      or may instead return NULL and place a Tcl list into the 
- *      given objPtrRef.  Tcl will take that list and first increment
- *      its refCount before using it.  On completion of that use, Tcl
- *      will decrement its refCount.  Hence if the list should be
- *      disposed of by Tcl when done, it should have a refCount of zero,
- *      and if the list should not be disposed of, the filesystem
- *      should ensure it retains a refCount on the object.
+ *	The called function may either return an array of strings, or may
+ *	instead return NULL and place a Tcl list into the given objPtrRef.
+ *	Tcl will take that list and first increment its refCount before using
+ *	it. On completion of that use, Tcl will decrement its refCount. Hence
+ *	if the list should be disposed of by Tcl when done, it should have a
+ *	refCount of zero, and if the list should not be disposed of, the
+ *	filesystem should ensure it retains a refCount on the object.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
-CONST char **
-Tcl_FSFileAttrStrings(pathPtr, objPtrRef)
-    Tcl_Obj* pathPtr;
-    Tcl_Obj** objPtrRef;
+const char **
+Tcl_FSFileAttrStrings(
+    Tcl_Obj *pathPtr,
+    Tcl_Obj **objPtrRef)
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+
     if (fsPtr != NULL) {
 	Tcl_FSFileAttrStringsProc *proc = fsPtr->fileAttrStringsProc;
 	if (proc != NULL) {
@@ -2381,34 +2473,110 @@ Tcl_FSFileAttrStrings(pathPtr, objPtrRef)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_FSFileAttrsGet --
+ * TclFSFileAttrIndex --
  *
- *	This procedure implements read access for the hookable 'file
- *	attributes' subcommand.  The appropriate function for the
- *	filesystem to which pathPtr belongs will be called.
+ *	Helper function for converting an attribute name to an index into the
+ *	attribute table.
  *
  * Results:
- *      Standard Tcl return code.  The object placed in objPtrRef
- *      (if TCL_OK was returned) is likely to have a refCount of zero.
- *      Either way we must either store it somewhere (e.g. the Tcl 
- *      result), or Incr/Decr its refCount to ensure it is properly
- *      freed.
+ *	Tcl result code, index written to *indexPtr on result==TCL_OK
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclFSFileAttrIndex(
+    Tcl_Obj *pathPtr,		/* File whose attributes are to be indexed
+				 * into. */
+    const char *attributeName,	/* The attribute being looked for. */
+    int *indexPtr)		/* Where to write the found index. */
+{
+    Tcl_Obj *listObj = NULL;
+    const char **attrTable;
+
+    /*
+     * Get the attribute table for the file.
+     */
+
+    attrTable = Tcl_FSFileAttrStrings(pathPtr, &listObj);
+    if (listObj != NULL) {
+	Tcl_IncrRefCount(listObj);
+    }
+
+    if (attrTable != NULL) {
+	/*
+	 * It's a constant attribute table, so use T_GIFO.
+	 */
+
+	Tcl_Obj *tmpObj = Tcl_NewStringObj(attributeName, -1);
+	int result;
+
+	result = Tcl_GetIndexFromObj(NULL, tmpObj, attrTable, NULL, TCL_EXACT,
+		indexPtr);
+	TclDecrRefCount(tmpObj);
+	if (listObj != NULL) {
+	    TclDecrRefCount(listObj);
+	}
+	return result;
+    } else if (listObj != NULL) {
+	/*
+	 * It's a non-constant attribute list, so do a literal search.
+	 */
 
+	int i, objc;
+	Tcl_Obj **objv;
+
+	if (Tcl_ListObjGetElements(NULL, listObj, &objc, &objv) != TCL_OK) {
+	    TclDecrRefCount(listObj);
+	    return TCL_ERROR;
+	}
+	for (i=0 ; i<objc ; i++) {
+	    if (!strcmp(attributeName, TclGetString(objv[i]))) {
+		TclDecrRefCount(listObj);
+		*indexPtr = i;
+		return TCL_OK;
+	    }
+	}
+	TclDecrRefCount(listObj);
+	return TCL_ERROR;
+    } else {
+	return TCL_ERROR;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FSFileAttrsGet --
+ *
+ *	This function implements read access for the hookable 'file
+ *	attributes' subcommand. The appropriate function for the filesystem to
+ *	which pathPtr belongs will be called.
+ *
+ * Results:
+ *	Standard Tcl return code. The object placed in objPtrRef (if TCL_OK
+ *	was returned) is likely to have a refCount of zero. Either way we must
+ *	either store it somewhere (e.g. the Tcl result), or Incr/Decr its
+ *	refCount to ensure it is properly freed.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSFileAttrsGet(interp, index, pathPtr, objPtrRef)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int index;			/* index of the attribute command. */
-    Tcl_Obj *pathPtr;		/* filename we are operating on. */
-    Tcl_Obj **objPtrRef;	/* for output. */
+Tcl_FSFileAttrsGet(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int index,			/* index of the attribute command. */
+    Tcl_Obj *pathPtr,		/* filename we are operating on. */
+    Tcl_Obj **objPtrRef)	/* for output. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+
     if (fsPtr != NULL) {
 	Tcl_FSFileAttrsGetProc *proc = fsPtr->fileAttrsGetProc;
 	if (proc != NULL) {
@@ -2424,27 +2592,28 @@ Tcl_FSFileAttrsGet(interp, index, pathPtr, objPtrRef)
  *
  * Tcl_FSFileAttrsSet --
  *
- *	This procedure implements write access for the hookable 'file
- *	attributes' subcommand.  The appropriate function for the
- *	filesystem to which pathPtr belongs will be called.
+ *	This function implements write access for the hookable 'file
+ *	attributes' subcommand. The appropriate function for the filesystem to
+ *	which pathPtr belongs will be called.
  *
  * Results:
- *      Standard Tcl return code.
+ *	Standard Tcl return code.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_FSFileAttrsSet(interp, index, pathPtr, objPtr)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int index;			/* index of the attribute command. */
-    Tcl_Obj *pathPtr;		/* filename we are operating on. */
-    Tcl_Obj *objPtr;		/* Input value. */
+Tcl_FSFileAttrsSet(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int index,			/* index of the attribute command. */
+    Tcl_Obj *pathPtr,		/* filename we are operating on. */
+    Tcl_Obj *objPtr)		/* Input value. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+
     if (fsPtr != NULL) {
 	Tcl_FSFileAttrsSetProc *proc = fsPtr->fileAttrsSetProc;
 	if (proc != NULL) {
@@ -2461,34 +2630,32 @@ Tcl_FSFileAttrsSet(interp, index, pathPtr, objPtr)
  * Tcl_FSGetCwd --
  *
  *	This function replaces the library version of getcwd().
- *	
- *	Most VFS's will *not* implement a 'cwdProc'.  Tcl now maintains
- *	its own record (in a Tcl_Obj) of the cwd, and an attempt
- *	is made to synchronise this with the cwd's containing filesystem,
- *	if that filesystem provides a cwdProc (e.g. the native filesystem).
- *	
- *	Note that if Tcl's cwd is not in the native filesystem, then of
- *	course Tcl's cwd and the native cwd are different: extensions
- *	should therefore ensure they only access the cwd through this
- *	function to avoid confusion.
- *	
+ *
+ *	Most VFS's will *not* implement a 'cwdProc'. Tcl now maintains its own
+ *	record (in a Tcl_Obj) of the cwd, and an attempt is made to synch this
+ *	with the cwd's containing filesystem, if that filesystem provides a
+ *	cwdProc (e.g. the native filesystem).
+ *
+ *	Note that if Tcl's cwd is not in the native filesystem, then of course
+ *	Tcl's cwd and the native cwd are different: extensions should
+ *	therefore ensure they only access the cwd through this function to
+ *	avoid confusion.
+ *
  *	If a global cwdPathPtr already exists, it is cached in the thread's
  *	private data structures and reference to the cached copy is returned,
  *	subject to a synchronisation attempt in that cwdPathPtr's fs.
- *	
- *	Otherwise, the chain of functions that have been "inserted"
- *	into the filesystem will be called in succession until either a
- *	value other than NULL is returned, or the entire list is
- *	visited.
+ *
+ *	Otherwise, the chain of functions that have been "inserted" into the
+ *	filesystem will be called in succession until either a value other
+ *	than NULL is returned, or the entire list is visited.
  *
  * Results:
- *	The result is a pointer to a Tcl_Obj specifying the current
- *	directory, or NULL if the current directory could not be
- *	determined.  If NULL is returned, an error message is left in the
- *	interp's result.  
- *	
- *	The result already has its refCount incremented for the caller.
- *	When it is no longer needed, that refCount should be decremented.
+ *	The result is a pointer to a Tcl_Obj specifying the current directory,
+ *	or NULL if the current directory could not be determined. If NULL is
+ *	returned, an error message is left in the interp's result.
+ *
+ *	The result already has its refCount incremented for the caller. When
+ *	it is no longer needed, that refCount should be decremented.
  *
  * Side effects:
  *	Various objects may be freed and allocated.
@@ -2496,117 +2663,220 @@ Tcl_FSFileAttrsSet(interp, index, pathPtr, objPtr)
  *----------------------------------------------------------------------
  */
 
-Tcl_Obj*
-Tcl_FSGetCwd(interp)
-    Tcl_Interp *interp;
+Tcl_Obj *
+Tcl_FSGetCwd(
+    Tcl_Interp *interp)
 {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+
     if (TclFSCwdPointerEquals(NULL)) {
 	FilesystemRecord *fsRecPtr;
 	Tcl_Obj *retVal = NULL;
 
-	/* 
-	 * We've never been called before, try to find a cwd.  Call
-	 * each of the "Tcl_GetCwd" function in succession.  A non-NULL
-	 * return value indicates the particular function has
-	 * succeeded.
+	/*
+	 * We've never been called before, try to find a cwd. Call each of the
+	 * "Tcl_GetCwd" function in succession. A non-NULL return value
+	 * indicates the particular function has succeeded.
 	 */
 
 	fsRecPtr = FsGetFirstFilesystem();
+	Claim();
 	while ((retVal == NULL) && (fsRecPtr != NULL)) {
 	    Tcl_FSGetCwdProc *proc = fsRecPtr->fsPtr->getCwdProc;
 	    if (proc != NULL) {
-		retVal = (*proc)(interp);
+		if (fsRecPtr->fsPtr->version != TCL_FILESYSTEM_VERSION_1) {
+		    ClientData retCd;
+		    TclFSGetCwdProc2 *proc2 = (TclFSGetCwdProc2*)proc;
+
+		    retCd = (*proc2)(NULL);
+		    if (retCd != NULL) {
+			Tcl_Obj *norm;
+			/* Looks like a new current directory */
+			retVal = (*fsRecPtr->fsPtr->internalToNormalizedProc)(
+				retCd);
+			Tcl_IncrRefCount(retVal);
+			norm = TclFSNormalizeAbsolutePath(interp,retVal);
+			if (norm != NULL) {
+			    /*
+			     * We found a cwd, which is now in our global
+			     * storage. We must make a copy. Norm already has
+			     * a refCount of 1.
+			     *
+			     * Threading issue: note that multiple threads at
+			     * system startup could in principle call this
+			     * function simultaneously. They will therefore
+			     * each set the cwdPathPtr independently. That
+			     * behaviour is a bit peculiar, but should be
+			     * fine. Once we have a cwd, we'll always be in
+			     * the 'else' branch below which is simpler.
+			     */
+
+			    FsUpdateCwd(norm, retCd);
+			    Tcl_DecrRefCount(norm);
+			} else {
+			    (*fsRecPtr->fsPtr->freeInternalRepProc)(retCd);
+			}
+			Tcl_DecrRefCount(retVal);
+			retVal = NULL;
+			Disclaim();
+			goto cdDidNotChange;
+		    } else if (interp != NULL) {
+			Tcl_AppendResult(interp,
+				"error getting working directory name: ",
+				Tcl_PosixError(interp), NULL);
+		    }
+		} else {
+		    retVal = (*proc)(interp);
+		}
 	    }
 	    fsRecPtr = fsRecPtr->nextPtr;
 	}
-	/* 
-	 * Now the 'cwd' may NOT be normalized, at least on some
-	 * platforms.  For the sake of efficiency, we want a completely
-	 * normalized cwd at all times.
-	 * 
-	 * Finally, if retVal is NULL, we do not have a cwd, which
-	 * could be problematic.
+	Disclaim();
+
+	/*
+	 * Now the 'cwd' may NOT be normalized, at least on some platforms.
+	 * For the sake of efficiency, we want a completely normalized cwd at
+	 * all times.
+	 *
+	 * Finally, if retVal is NULL, we do not have a cwd, which could be
+	 * problematic.
 	 */
+
 	if (retVal != NULL) {
 	    Tcl_Obj *norm = TclFSNormalizeAbsolutePath(interp, retVal);
 	    if (norm != NULL) {
-		/* 
-		 * We found a cwd, which is now in our global storage.
-		 * We must make a copy. Norm already has a refCount of 1.
-		 * 
+		/*
+		 * We found a cwd, which is now in our global storage. We must
+		 * make a copy. Norm already has a refCount of 1.
+		 *
 		 * Threading issue: note that multiple threads at system
-		 * startup could in principle call this procedure 
-		 * simultaneously.  They will therefore each set the
-		 * cwdPathPtr independently.  That behaviour is a bit
-		 * peculiar, but should be fine.  Once we have a cwd,
-		 * we'll always be in the 'else' branch below which
-		 * is simpler.
+		 * startup could in principle call this function
+		 * simultaneously. They will therefore each set the cwdPathPtr
+		 * independently. That behaviour is a bit peculiar, but should
+		 * be fine. Once we have a cwd, we'll always be in the 'else'
+		 * branch below which is simpler.
 		 */
-		FsUpdateCwd(norm);
+
+		ClientData cd = (ClientData) Tcl_FSGetNativePath(norm);
+		FsUpdateCwd(norm, TclNativeDupInternalRep(cd));
 		Tcl_DecrRefCount(norm);
 	    }
 	    Tcl_DecrRefCount(retVal);
 	}
     } else {
-	/* 
-	 * We already have a cwd cached, but we want to give the
-	 * filesystem it is in a chance to check whether that cwd
-	 * has changed, or is perhaps no longer accessible.  This
-	 * allows an error to be thrown if, say, the permissions on
-	 * that directory have changed.
+	/*
+	 * We already have a cwd cached, but we want to give the filesystem it
+	 * is in a chance to check whether that cwd has changed, or is perhaps
+	 * no longer accessible. This allows an error to be thrown if, say,
+	 * the permissions on that directory have changed.
 	 */
-	Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(tsdPtr->cwdPathPtr);
-	/* 
-	 * If the filesystem couldn't be found, or if no cwd function
-	 * exists for this filesystem, then we simply assume the cached
-	 * cwd is ok.  If we do call a cwd, we must watch for errors
-	 * (if the cwd returns NULL).  This ensures that, say, on Unix
-	 * if the permissions of the cwd change, 'pwd' does actually
-	 * throw the correct error in Tcl.  (This is tested for in the
-	 * test suite on unix).
+
+	const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(tsdPtr->cwdPathPtr);
+
+	/*
+	 * If the filesystem couldn't be found, or if no cwd function exists
+	 * for this filesystem, then we simply assume the cached cwd is ok.
+	 * If we do call a cwd, we must watch for errors (if the cwd returns
+	 * NULL). This ensures that, say, on Unix if the permissions of the
+	 * cwd change, 'pwd' does actually throw the correct error in Tcl.
+	 * (This is tested for in the test suite on unix).
 	 */
+
 	if (fsPtr != NULL) {
 	    Tcl_FSGetCwdProc *proc = fsPtr->getCwdProc;
+	    ClientData retCd = NULL;
 	    if (proc != NULL) {
-		Tcl_Obj *retVal = (*proc)(interp);
+		Tcl_Obj *retVal;
+		if (fsPtr->version != TCL_FILESYSTEM_VERSION_1) {
+		    TclFSGetCwdProc2 *proc2 = (TclFSGetCwdProc2*)proc;
+
+		    retCd = (*proc2)(tsdPtr->cwdClientData);
+		    if (retCd == NULL && interp != NULL) {
+			Tcl_AppendResult(interp,
+				"error getting working directory name: ",
+				Tcl_PosixError(interp), NULL);
+		    }
+
+		    if (retCd == tsdPtr->cwdClientData) {
+			goto cdDidNotChange;
+		    }
+
+		    /*
+		     * Looks like a new current directory.
+		     */
+
+		    retVal = (*fsPtr->internalToNormalizedProc)(retCd);
+		    Tcl_IncrRefCount(retVal);
+		} else {
+		    retVal = (*proc)(interp);
+		}
 		if (retVal != NULL) {
 		    Tcl_Obj *norm = TclFSNormalizeAbsolutePath(interp, retVal);
-		    /* 
-		     * Check whether cwd has changed from the value
-		     * previously stored in cwdPathPtr.  Really 'norm'
-		     * shouldn't be null, but we are careful.
+
+		    /*
+		     * Check whether cwd has changed from the value previously
+		     * stored in cwdPathPtr. Really 'norm' shouldn't be NULL,
+		     * but we are careful.
 		     */
+
 		    if (norm == NULL) {
 			/* Do nothing */
-		    } else if (Tcl_FSEqualPaths(tsdPtr->cwdPathPtr, norm)) {
-			/* 
-			 * If the paths were equal, we can be more
-			 * efficient and retain the old path object
-			 * which will probably already be shared.  In
-			 * this case we can simply free the normalized
-			 * path we just calculated.
-			 */
-			Tcl_DecrRefCount(norm);
+			if (retCd != NULL) {
+			    (*fsPtr->freeInternalRepProc)(retCd);
+			}
+		    } else if (norm == tsdPtr->cwdPathPtr) {
+			goto cdEqual;
 		    } else {
-			FsUpdateCwd(norm);
-			Tcl_DecrRefCount(norm);
+			/*
+			 * Note that both 'norm' and 'tsdPtr->cwdPathPtr' are
+			 * normalized paths. Therefore we can be more
+			 * efficient than calling 'Tcl_FSEqualPaths', and in
+			 * addition avoid a nasty infinite loop bug when
+			 * trying to normalize tsdPtr->cwdPathPtr.
+			 */
+
+			int len1, len2;
+			char *str1, *str2;
+
+			str1 = Tcl_GetStringFromObj(tsdPtr->cwdPathPtr, &len1);
+			str2 = Tcl_GetStringFromObj(norm, &len2);
+			if ((len1 == len2) && (strcmp(str1, str2) == 0)) {
+			    /*
+			     * If the paths were equal, we can be more
+			     * efficient and retain the old path object which
+			     * will probably already be shared. In this case
+			     * we can simply free the normalized path we just
+			     * calculated.
+			     */
+
+			cdEqual:
+			    Tcl_DecrRefCount(norm);
+			    if (retCd != NULL) {
+				(*fsPtr->freeInternalRepProc)(retCd);
+			    }
+			} else {
+			    FsUpdateCwd(norm, retCd);
+			    Tcl_DecrRefCount(norm);
+			}
 		    }
 		    Tcl_DecrRefCount(retVal);
 		} else {
-		    /* The 'cwd' function returned an error; reset the cwd */
-		    FsUpdateCwd(NULL);
+		    /*
+		     * The 'cwd' function returned an error; reset the cwd.
+		     */
+
+		    FsUpdateCwd(NULL, NULL);
 		}
 	    }
 	}
     }
-    
+
+  cdDidNotChange:
     if (tsdPtr->cwdPathPtr != NULL) {
 	Tcl_IncrRefCount(tsdPtr->cwdPathPtr);
     }
-    
-    return tsdPtr->cwdPathPtr; 
+
+    return tsdPtr->cwdPathPtr;
 }
 
 /*
@@ -2615,131 +2885,148 @@ Tcl_FSGetCwd(interp)
  * Tcl_FSChdir --
  *
  *	This function replaces the library version of chdir().
- *	
- *	The path is normalized and then passed to the filesystem
- *	which claims it.
+ *
+ *	The path is normalized and then passed to the filesystem which claims
+ *	it.
  *
  * Results:
- *	See chdir() documentation.  If successful, we keep a 
- *	record of the successful path in cwdPathPtr for subsequent 
- *	calls to getcwd.
+ *	See chdir() documentation. If successful, we keep a record of the
+ *	successful path in cwdPathPtr for subsequent calls to getcwd.
  *
  * Side effects:
- *	See chdir() documentation.  The global cwdPathPtr may 
- *	change value.
+ *	See chdir() documentation. The global cwdPathPtr may change value.
  *
  *----------------------------------------------------------------------
  */
+
 int
-Tcl_FSChdir(pathPtr)
-    Tcl_Obj *pathPtr;
+Tcl_FSChdir(
+    Tcl_Obj *pathPtr)
 {
-    Tcl_Filesystem *fsPtr;
+    const Tcl_Filesystem *fsPtr;
     int retVal = -1;
-    
-#ifdef WIN32
-    /*
-     * This complete hack addresses the bug tested in winFCmd-16.12,
-     * where having your HOME as "C:" (IOW, a seemingly path relative
-     * dir) would cause a crash when you cd'd to it and requested 'pwd'.
-     * The work-around is to force such a dir into an absolute path by
-     * tacking on '/'.
-     *
-     * We check for '~' specifically because that's what Tcl_CdObjCmd
-     * passes in that triggers the bug.  A direct 'cd C:' call will not
-     * because that gets the volumerelative pwd.
-     *
-     * This is not an issue for 8.5 as that has a more elaborate change
-     * that requires the use of TCL_FILESYSTEM_VERSION_2.
-     */
-    Tcl_Obj *objPtr = NULL;
-    if (pathPtr->bytes && pathPtr->length == 1 && pathPtr->bytes[0] == '~') {
-	int len;
-	char *str;
 
-	objPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr);
-	if (objPtr == NULL) {
-	    Tcl_SetErrno(ENOENT);
-	    return -1;
-	}
-	Tcl_IncrRefCount(objPtr);
-	str = Tcl_GetStringFromObj(objPtr, &len);
-	if (len == 2 && str[1] == ':') {
-	    pathPtr = Tcl_NewStringObj(str, len);
-	    Tcl_AppendToObj(pathPtr, "/", 1);
-	    Tcl_IncrRefCount(pathPtr);
-	    Tcl_DecrRefCount(objPtr);
-	    objPtr = pathPtr;
-	} else {
-	    Tcl_DecrRefCount(objPtr);
-	    objPtr = NULL;
-	}
-    }
-#endif
     if (Tcl_FSGetNormalizedPath(NULL, pathPtr) == NULL) {
-#ifdef WIN32
-	if (objPtr) { Tcl_DecrRefCount(objPtr); }
-#endif
 	Tcl_SetErrno(ENOENT);
-        return -1;
+	return retVal;
     }
-    
+
     fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSChdirProc *proc = fsPtr->chdirProc;
 	if (proc != NULL) {
+	    /*
+	     * If this fails, an appropriate errno will have been stored using
+	     * 'Tcl_SetErrno()'.
+	     */
+
 	    retVal = (*proc)(pathPtr);
 	} else {
-	    /* Fallback on stat-based implementation */
+	    /*
+	     * Fallback on stat-based implementation.
+	     */
+
 	    Tcl_StatBuf buf;
-	    /* If the file can be stat'ed and is a directory and
-	     * is readable, then we can chdir. */
-	    if ((Tcl_FSStat(pathPtr, &buf) == 0) 
-	      && (S_ISDIR(buf.st_mode))
-	      && (Tcl_FSAccess(pathPtr, R_OK) == 0)) {
-		/* We allow the chdir */
+
+	    /*
+	     * If the file can be stat'ed and is a directory and is readable,
+	     * then we can chdir. If any of these actions fail, then
+	     * 'Tcl_SetErrno()' should automatically have been called to set
+	     * an appropriate error code
+	     */
+
+	    if ((Tcl_FSStat(pathPtr, &buf) == 0) && (S_ISDIR(buf.st_mode))
+		    && (Tcl_FSAccess(pathPtr, R_OK) == 0)) {
+		/*
+		 * We allow the chdir.
+		 */
+
 		retVal = 0;
 	    }
 	}
+    } else {
+	Tcl_SetErrno(ENOENT);
     }
 
-    if (retVal != -1) {
-	/* 
-	 * The cwd changed, or an error was thrown.  If an error was
-	 * thrown, we can just continue (and that will report the error
-	 * to the user).  If there was no error we must assume that the
-	 * cwd was actually changed to the normalized value we
-	 * calculated above, and we must therefore cache that
-	 * information.
+    /*
+     * The cwd changed, or an error was thrown. If an error was thrown, we can
+     * just continue (and that will report the error to the user). If there
+     * was no error we must assume that the cwd was actually changed to the
+     * normalized value we calculated above, and we must therefore cache that
+     * information.
+     */
+
+    /*
+     * If the filesystem in question has a getCwdProc, then the correct logic
+     * which performs the part below is already part of the Tcl_FSGetCwd()
+     * call, so no need to replicate it again. This will have a side effect
+     * though. The private authoritative representation of the current working
+     * directory stored in cwdPathPtr in static memory will be out-of-sync
+     * with the real OS-maintained value. The first call to Tcl_FSGetCwd will
+     * however recalculate the private copy to match the OS-value so
+     * everything will work right.
+     *
+     * However, if there is no getCwdProc, then we _must_ update our private
+     * storage of the cwd, since this is the only opportunity to do that!
+     *
+     * Note: We currently call this block of code irrespective of whether
+     * there was a getCwdProc or not, but the code should all in principle
+     * work if we only call this block if fsPtr->getCwdProc == NULL.
+     */
+
+    if (retVal == 0) {
+	/*
+	 * Note that this normalized path may be different to what we found
+	 * above (or at least a different object), if the filesystem epoch
+	 * changed recently. This can actually happen with scripted documents
+	 * very easily. Therefore we ask for the normalized path again (the
+	 * correct value will have been cached as a result of the
+	 * Tcl_FSGetFileSystemForPath call above anyway).
 	 */
-	if (retVal == 0) {
-	    /* 
-	     * Note that this normalized path may be different to what
-	     * we found above (or at least a different object), if the
-	     * filesystem epoch changed recently.  This can actually
-	     * happen with scripted documents very easily.  Therefore
-	     * we ask for the normalized path again (the correct value
-	     * will have been cached as a result of the
-	     * Tcl_FSGetFileSystemForPath call above anyway).
+
+	Tcl_Obj *normDirName = Tcl_FSGetNormalizedPath(NULL, pathPtr);
+
+	if (normDirName == NULL) {
+	    /* Not really true, but what else to do? */
+	    Tcl_SetErrno(ENOENT);
+	    return -1;
+	}
+
+	if (fsPtr == &tclNativeFilesystem) {
+	    /*
+	     * For the native filesystem, we keep a cache of the native
+	     * representation of the cwd. But, we want to do that for the
+	     * exact format that is returned by 'getcwd' (so that we can later
+	     * compare the two representations for equality), which might not
+	     * be exactly the same char-string as the native representation of
+	     * the fully normalized path (e.g. on Windows there's a
+	     * forward-slash vs backslash difference). Hence we ask for this
+	     * again here. On Unix it might actually be true that we always
+	     * have the correct form in the native rep in which case we could
+	     * simply use:
+	     *		cd = Tcl_FSGetNativePath(pathPtr);
+	     * instead. This should be examined by someone on Unix.
 	     */
-	    Tcl_Obj *normDirName = Tcl_FSGetNormalizedPath(NULL, pathPtr);
-	    if (normDirName == NULL) {
-#ifdef WIN32
-		if (objPtr) { Tcl_DecrRefCount(objPtr); }
-#endif
-		Tcl_SetErrno(ENOENT);
-	        return -1;
+
+	    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&fsDataKey);
+	    ClientData cd;
+	    ClientData oldcd = tsdPtr->cwdClientData;
+
+	    /*
+	     * Assumption we are using a filesystem version 2.
+	     */
+
+	    TclFSGetCwdProc2 *proc2 = (TclFSGetCwdProc2*)fsPtr->getCwdProc;
+	    cd = (*proc2)(oldcd);
+	    if (cd != oldcd) {
+		FsUpdateCwd(normDirName, cd);
 	    }
-	    FsUpdateCwd(normDirName);
+	} else {
+	    FsUpdateCwd(normDirName, NULL);
 	}
-    } else {
-	Tcl_SetErrno(ENOENT);
     }
-    
-#ifdef WIN32
-    if (objPtr) { Tcl_DecrRefCount(objPtr); }
-#endif
-    return (retVal);
+
+    return retVal;
 }
 
 /*
@@ -2747,26 +3034,114 @@ Tcl_FSChdir(pathPtr)
  *
  * Tcl_FSLoadFile --
  *
- *	Dynamically loads a binary code file into memory and returns
- *	the addresses of two procedures within that file, if they are
- *	defined.  The appropriate function for the filesystem to which
- *	pathPtr belongs will be called.
- *	
- *	Note that the native filesystem doesn't actually assume
- *	'pathPtr' is a path.  Rather it assumes filename is either
- *	a path or just the name of a file which can be found somewhere
- *	in the environment's loadable path.  This behaviour is not
- *	very compatible with virtual filesystems (and has other problems
- *	documented in the load man-page), so it is advised that full
- *	paths are always used.
+ *	Dynamically loads a binary code file into memory and returns the
+ *	addresses of two functions within that file, if they are defined. The
+ *	appropriate function for the filesystem to which pathPtr belongs will
+ *	be called.
+ *
+ *	Note that the native filesystem doesn't actually assume 'pathPtr' is a
+ *	path. Rather it assumes pathPtr is either a path or just the name
+ *	(tail) of a file which can be found somewhere in the environment's
+ *	loadable path. This behaviour is not very compatible with virtual
+ *	filesystems (and has other problems documented in the load man-page),
+ *	so it is advised that full paths are always used.
+ *
+ * Results:
+ *	A standard Tcl completion code. If an error occurs, an error message
+ *	is left in the interp's result.
+ *
+ * Side effects:
+ *	New code suddenly appears in memory. This may later be unloaded by
+ *	passing the clientData to the unloadProc.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_FSLoadFile(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
+				 * code. */
+    const char *sym1, const char *sym2,
+				/* Names of two functions to look up in the
+				 * file's symbol table. */
+    Tcl_PackageInitProc **proc1Ptr, Tcl_PackageInitProc **proc2Ptr,
+				/* Where to return the addresses corresponding
+				 * to sym1 and sym2. */
+    Tcl_LoadHandle *handlePtr,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
+				 * (*unloadProcPtr)() to unload the file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr)
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
+{
+    const char *symbols[2];
+    Tcl_PackageInitProc **procPtrs[2];
+    ClientData clientData;
+    int res;
+
+    /*
+     * Initialize the arrays.
+     */
+
+    symbols[0] = sym1;
+    symbols[1] = sym2;
+    procPtrs[0] = proc1Ptr;
+    procPtrs[1] = proc2Ptr;
+
+    /*
+     * Perform the load.
+     */
+
+    res = TclLoadFile(interp, pathPtr, 2, symbols, procPtrs, handlePtr,
+	    &clientData, unloadProcPtr);
+
+    /*
+     * Due to an unfortunate mis-design in Tcl 8.4 fs, when loading a shared
+     * library, we don't keep the loadHandle (for TclpFindSymbol) and the
+     * clientData (for the unloadProc) separately. In fact we effectively
+     * throw away the loadHandle and only use the clientData. It just so
+     * happens, for the native filesystem only, that these two are identical.
+     *
+     * This also means that the signatures Tcl_FSUnloadFileProc and
+     * Tcl_FSLoadFileProc are both misleading.
+     */
+
+    *handlePtr = (Tcl_LoadHandle) clientData;
+    return res;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclLoadFile --
+ *
+ *	Dynamically loads a binary code file into memory and returns the
+ *	addresses of a number of given functions within that file, if they are
+ *	defined. The appropriate function for the filesystem to which pathPtr
+ *	belongs will be called.
+ *
+ *	Note that the native filesystem doesn't actually assume 'pathPtr' is a
+ *	path. Rather it assumes pathPtr is either a path or just the name
+ *	(tail) of a file which can be found somewhere in the environment's
+ *	loadable path. This behaviour is not very compatible with virtual
+ *	filesystems (and has other problems documented in the load man-page),
+ *	so it is advised that full paths are always used.
+ *
+ *	This function is currently private to Tcl. It may be exported in the
+ *	future and its interface fixed (but we should clean up the
+ *	loadHandle/clientData confusion at that time -- see the above comments
+ *	in Tcl_FSLoadFile for details). For a public function, see
+ *	Tcl_FSLoadFile.
  *
  * Results:
- *	A standard Tcl completion code.  If an error occurs, an error
- *	message is left in the interp's result.
+ *	A standard Tcl completion code. If an error occurs, an error message
+ *	is left in the interp's result.
  *
  * Side effects:
- *	New code suddenly appears in memory.  This may later be
- *	unloaded by passing the clientData to the unloadProc.
+ *	New code suddenly appears in memory. This may later be unloaded by
+ *	passing the clientData to the unloadProc.
  *
  *----------------------------------------------------------------------
  */
@@ -2775,369 +3150,384 @@ typedef int (Tcl_FSLoadFileProc2) (Tcl_Interp *interp, Tcl_Obj *pathPtr,
 	Tcl_LoadHandle *handlePtr, Tcl_FSUnloadFileProc **unloadProcPtr, int flags);
 
 int
-Tcl_FSLoadFile(interp, pathPtr, sym1, sym2, proc1Ptr, proc2Ptr, 
-	       handlePtr, unloadProcPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Obj *pathPtr;		/* Name of the file containing the desired
+TclLoadFile(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
 				 * code. */
-    CONST char *sym1, *sym2;	/* Names of two procedures to look up in
-				 * the file's symbol table. */
-    Tcl_PackageInitProc **proc1Ptr, **proc2Ptr;
+    int symc,			/* Number of symbols/procPtrs in the next two
+				 * arrays. */
+    const char *symbols[],	/* Names of functions to look up in the file's
+				 * symbol table. */
+    Tcl_PackageInitProc **procPtrs[],
 				/* Where to return the addresses corresponding
-				 * to sym1 and sym2. */
-    Tcl_LoadHandle *handlePtr;	/* Filled with token for dynamically loaded
-				 * file which will be passed back to 
+				 * to symbols[]. */
+    Tcl_LoadHandle *handlePtr,	/* Filled with token for shared library
+				 * information which can be used in
+				 * TclpFindSymbol. */
+    ClientData *clientDataPtr,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
 				 * (*unloadProcPtr)() to unload the file. */
-    Tcl_FSUnloadFileProc **unloadProcPtr;	
-                                /* Filled with address of Tcl_FSUnloadFileProc
-                                 * function which should be used for
-                                 * this file. */
+    Tcl_FSUnloadFileProc **unloadProcPtr)
+				/* Filled with address of Tcl_FSUnloadFileProc
+				 * function which should be used for this
+				 * file. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
-    if (fsPtr != NULL) {
-	Tcl_FSLoadFileProc *proc = fsPtr->loadFileProc;
-	if (proc != NULL) {
-	    int retVal = ((Tcl_FSLoadFileProc2 *)proc)
-		    (interp, pathPtr, handlePtr, unloadProcPtr, 0);
-	    if (retVal != TCL_OK) {
-		return retVal;
-	    }
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    Tcl_FSLoadFileProc *proc;
+    Tcl_Filesystem *copyFsPtr;
+    Tcl_Obj *copyToPtr;
+    Tcl_LoadHandle newLoadHandle = NULL;
+    ClientData newClientData = NULL;
+    Tcl_FSUnloadFileProc *newUnloadProcPtr = NULL;
+    FsDivertLoad *tvdlPtr;
+    int retVal;
+
+    if (fsPtr == NULL) {
+	Tcl_SetErrno(ENOENT);
+	return TCL_ERROR;
+    }
+
+    proc = fsPtr->loadFileProc;
+    if (proc != NULL) {
+	int retVal = ((Tcl_FSLoadFileProc2 *)proc)
+		(interp, pathPtr, handlePtr, unloadProcPtr, 0);
+	if (retVal == TCL_OK) {
 	    if (*handlePtr == NULL) {
 		return TCL_ERROR;
 	    }
-	    if (sym1 != NULL) {
-	        *proc1Ptr = TclpFindSymbol(interp, *handlePtr, sym1);
-	    }
-	    if (sym2 != NULL) {
-	        *proc2Ptr = TclpFindSymbol(interp, *handlePtr, sym2);
-	    }
+
+	    /*
+	     * Copy this across, since both are equal for the native fs.
+	     */
+
+	    *clientDataPtr = (ClientData)*handlePtr;
+	    Tcl_ResetResult(interp);
+	    goto resolveSymbols;
+	}
+	if (Tcl_GetErrno() != EXDEV) {
 	    return retVal;
-	} else {
-	    Tcl_Filesystem *copyFsPtr;
-	    Tcl_Obj *copyToPtr;
-	    
-	    /* First check if it is readable -- and exists! */
-	    if (Tcl_FSAccess(pathPtr, R_OK) != 0) {
-		Tcl_AppendResult(interp, "couldn't load library \"",
-				 Tcl_GetString(pathPtr), "\": ", 
-				 Tcl_PosixError(interp), (char *) NULL);
-		return TCL_ERROR;
-	    }
-	    
+	}
+    }
+
+    /*
+     * The filesystem doesn't support 'load', so we fall back on the following
+     * technique:
+     *
+     * First check if it is readable -- and exists!
+     */
+
+    if (Tcl_FSAccess(pathPtr, R_OK) != 0) {
+	Tcl_AppendResult(interp, "couldn't load library \"",
+		Tcl_GetString(pathPtr), "\": ", Tcl_PosixError(interp), NULL);
+	return TCL_ERROR;
+    }
+
 #ifdef TCL_LOAD_FROM_MEMORY
-	/* 
-	 * The platform supports loading code from memory, so ask for a
-	 * buffer of the appropriate size, read the file into it and 
-	 * load the code from the buffer:
+    /*
+     * The platform supports loading code from memory, so ask for a buffer of
+     * the appropriate size, read the file into it and load the code from the
+     * buffer:
+     */
+
+    {
+	int ret, size;
+	void *buffer;
+	Tcl_StatBuf statBuf;
+	Tcl_Channel data;
+
+	ret = Tcl_FSStat(pathPtr, &statBuf);
+	if (ret < 0) {
+	    goto mustCopyToTempAnyway;
+	}
+	size = (int) statBuf.st_size;
+
+	/*
+	 * Tcl_Read takes an int: check that file size isn't wide.
 	 */
-	do {
-            int ret, size;
-            void *buffer;
-            Tcl_StatBuf statBuf;
-            Tcl_Channel data;
-            
-            ret = Tcl_FSStat(pathPtr, &statBuf);
-            if (ret < 0) {
-                break;
-            }
-            size = (int) statBuf.st_size;
-            /* Tcl_Read takes an int: check that file size isn't wide */
-            if (size != (Tcl_WideInt)statBuf.st_size) {
-                break;
-            }
-	    data = Tcl_FSOpenFileChannel(interp, pathPtr, "r", 0666);
-            if (!data) {
-                break;
-            }
-            buffer = TclpLoadMemoryGetBuffer(interp, size);
-            if (!buffer) {
-                Tcl_Close(interp, data);
-                break;
-            }
-            Tcl_SetChannelOption(interp, data, "-translation", "binary");
-            ret = Tcl_Read(data, buffer, size);
-            Tcl_Close(interp, data);
-            ret = TclpLoadMemory(interp, buffer, size, ret, handlePtr, unloadProcPtr);
-            if (ret == TCL_OK) {
-		if (*handlePtr == NULL) {
-		    break;
-		}
-                if (sym1 != NULL) {
-                    *proc1Ptr = TclpFindSymbol(interp, *handlePtr, sym1);
-                }
-                if (sym2 != NULL) {
-                    *proc2Ptr = TclpFindSymbol(interp, *handlePtr, sym2);
-                }
-		return TCL_OK;
-	    }
-	} while (0); 
-	Tcl_ResetResult(interp);
+
+	if (size != (Tcl_WideInt) statBuf.st_size) {
+	    goto mustCopyToTempAnyway;
+	}
+	data = Tcl_FSOpenFileChannel(interp, pathPtr, "rb", 0666);
+	if (!data) {
+	    goto mustCopyToTempAnyway;
+	}
+	buffer = TclpLoadMemoryGetBuffer(interp, size);
+	if (!buffer) {
+	    Tcl_Close(interp, data);
+	    goto mustCopyToTempAnyway;
+	}
+	ret = Tcl_Read(data, buffer, size);
+	Tcl_Close(interp, data);
+	ret = TclpLoadMemory(interp, buffer, size, ret, handlePtr,
+		unloadProcPtr);
+	if (ret == TCL_OK && *handlePtr != NULL) {
+	    *clientDataPtr = (ClientData) *handlePtr;
+	    goto resolveSymbols;
+	}
+    }
+
+  mustCopyToTempAnyway:
+    Tcl_ResetResult(interp);
 #endif
 
-	    /* 
-	     * Get a temporary filename to use, first to
-	     * copy the file into, and then to load. 
-	     */
-	    copyToPtr = TclpTempFileName();
-	    if (copyToPtr == NULL) {
-	        return -1;
-	    }
-	    Tcl_IncrRefCount(copyToPtr);
-	    
-	    copyFsPtr = Tcl_FSGetFileSystemForPath(copyToPtr);
-	    if ((copyFsPtr == NULL) || (copyFsPtr == fsPtr)) {
-		/* 
-		 * We already know we can't use Tcl_FSLoadFile from 
-		 * this filesystem, and we must avoid a possible
-		 * infinite loop.  Try to delete the file we
-		 * probably created, and then exit.
-		 */
-		Tcl_FSDeleteFile(copyToPtr);
-		Tcl_DecrRefCount(copyToPtr);
-		return -1;
-	    }
-	    
-	    if (TclCrossFilesystemCopy(interp, pathPtr, 
-				       copyToPtr) == TCL_OK) {
-		Tcl_LoadHandle newLoadHandle = NULL;
-		Tcl_FSUnloadFileProc *newUnloadProcPtr = NULL;
-		FsDivertLoad *tvdlPtr;
-		int retVal;
+    /*
+     * Get a temporary filename to use, first to copy the file into, and then
+     * to load.
+     */
+
+    copyToPtr = TclpTempFileName();
+    if (copyToPtr == NULL) {
+	Tcl_AppendResult(interp, "couldn't create temporary file: ",
+		Tcl_PosixError(interp), NULL);
+	return TCL_ERROR;
+    }
+    Tcl_IncrRefCount(copyToPtr);
+
+    copyFsPtr = Tcl_FSGetFileSystemForPath(copyToPtr);
+    if ((copyFsPtr == NULL) || (copyFsPtr == fsPtr)) {
+	/*
+	 * We already know we can't use Tcl_FSLoadFile from this filesystem,
+	 * and we must avoid a possible infinite loop. Try to delete the file
+	 * we probably created, and then exit.
+	 */
+
+	Tcl_FSDeleteFile(copyToPtr);
+	Tcl_DecrRefCount(copyToPtr);
+	Tcl_AppendResult(interp, "couldn't load from current filesystem",NULL);
+	return TCL_ERROR;
+    }
+
+    if (TclCrossFilesystemCopy(interp, pathPtr, copyToPtr) != TCL_OK) {
+	/*
+	 * Cross-platform copy failed.
+	 */
+
+	Tcl_FSDeleteFile(copyToPtr);
+	Tcl_DecrRefCount(copyToPtr);
+	return TCL_ERROR;
+    }
 
 #if !defined(__WIN32__)
-		/* 
-		 * Do we need to set appropriate permissions 
-		 * on the file?  This may be required on some
-		 * systems.  On Unix we could loop over
-		 * the file attributes, and set any that are
-		 * called "-permissions" to 0700.  However,
-		 * we just do this directly, like this:
-		 */
-		
-		Tcl_Obj* perm = Tcl_NewStringObj("0700",-1);
-		Tcl_IncrRefCount(perm);
-		Tcl_FSFileAttrsSet(NULL, 2, copyToPtr, perm);
-		Tcl_DecrRefCount(perm);
-#endif
-		
-		/* 
-		 * We need to reset the result now, because the cross-
-		 * filesystem copy may have stored the number of bytes
-		 * in the result
-		 */
-		Tcl_ResetResult(interp);
-		
-		retVal = Tcl_FSLoadFile(interp, copyToPtr, sym1, sym2,
-					proc1Ptr, proc2Ptr, 
-					&newLoadHandle,
-					&newUnloadProcPtr);
-	        if (retVal != TCL_OK) {
-		    /* The file didn't load successfully */
-		    Tcl_FSDeleteFile(copyToPtr);
-		    Tcl_DecrRefCount(copyToPtr);
-		    return retVal;
-		}
-		/* 
-		 * Try to delete the file immediately -- this is
-		 * possible in some OSes, and avoids any worries
-		 * about leaving the copy laying around on exit. 
-		 */
-		if (Tcl_FSDeleteFile(copyToPtr) == TCL_OK) {
-		    Tcl_DecrRefCount(copyToPtr);
-		    /* 
-		     * We tell our caller about the real shared
-		     * library which was loaded.  Note that this
-		     * does mean that the package list maintained
-		     * by 'load' will store the original (vfs)
-		     * path alongside the temporary load handle
-		     * and unload proc ptr.
-		     */
-		    (*handlePtr) = newLoadHandle;
-		    (*unloadProcPtr) = newUnloadProcPtr;
-		    return TCL_OK;
-		}
-		/* 
-		 * When we unload this file, we need to divert the 
-		 * unloading so we can unload and cleanup the 
-		 * temporary file correctly.
-		 */
-		tvdlPtr = (FsDivertLoad*) ckalloc(sizeof(FsDivertLoad));
+    /*
+     * Do we need to set appropriate permissions on the file? This may be
+     * required on some systems. On Unix we could loop over the file
+     * attributes, and set any that are called "-permissions" to 0700. However
+     * we just do this directly, like this:
+     */
 
-		/* 
-		 * Remember three pieces of information.  This allows
-		 * us to cleanup the diverted load completely, on
-		 * platforms which allow proper unloading of code.
-		 */
-		tvdlPtr->loadHandle = newLoadHandle;
-		tvdlPtr->unloadProcPtr = newUnloadProcPtr;
-
-		if (copyFsPtr != &tclNativeFilesystem) {
-		    /* copyToPtr is already incremented for this reference */
-		    tvdlPtr->divertedFile = copyToPtr;
-
-		    /* 
-		     * This is the filesystem we loaded it into.  Since
-		     * we have a reference to 'copyToPtr', we already
-		     * have a refCount on this filesystem, so we don't
-		     * need to worry about it disappearing on us.
-		     */
-		    tvdlPtr->divertedFilesystem = copyFsPtr;
-		    tvdlPtr->divertedFileNativeRep = NULL;
-		} else {
-		    /* We need the native rep */
-		    tvdlPtr->divertedFileNativeRep = 
-		      TclNativeDupInternalRep(Tcl_FSGetInternalRep(copyToPtr, 
-								copyFsPtr));
-		    /* 
-		     * We don't need or want references to the copied
-		     * Tcl_Obj or the filesystem if it is the native
-		     * one.
-		     */
-		    tvdlPtr->divertedFile = NULL;
-		    tvdlPtr->divertedFilesystem = NULL;
-		    Tcl_DecrRefCount(copyToPtr);
-		}
+    {
+	int index;
+	Tcl_Obj *perm;
 
-		copyToPtr = NULL;
-		(*handlePtr) = (Tcl_LoadHandle) tvdlPtr;
-		(*unloadProcPtr) = &FSUnloadTempFile;
-		return retVal;
-	    } else {
-		/* Cross-platform copy failed */
-		Tcl_FSDeleteFile(copyToPtr);
-		Tcl_DecrRefCount(copyToPtr);
-		return TCL_ERROR;
-	    }
+	TclNewLiteralStringObj(perm, "0700");
+	Tcl_IncrRefCount(perm);
+	if (TclFSFileAttrIndex(copyToPtr, "-permissions", &index) == TCL_OK) {
+	    Tcl_FSFileAttrsSet(NULL, index, copyToPtr, perm);
 	}
+	Tcl_DecrRefCount(perm);
     }
-    Tcl_SetErrno(ENOENT);
-    return -1;
-}
-/* 
- * This function used to be in the platform specific directories, but it
- * has now been made to work cross-platform
- */
-int
-TclpLoadFile(interp, pathPtr, sym1, sym2, proc1Ptr, proc2Ptr, 
-	     clientDataPtr, unloadProcPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Obj *pathPtr;		/* Name of the file containing the desired
-				 * code (UTF-8). */
-    CONST char *sym1, *sym2;	/* Names of two procedures to look up in
-				 * the file's symbol table. */
-    Tcl_PackageInitProc **proc1Ptr, **proc2Ptr;
-				/* Where to return the addresses corresponding
-				 * to sym1 and sym2. */
-    ClientData *clientDataPtr;	/* Filled with token for dynamically loaded
-				 * file which will be passed back to 
-				 * (*unloadProcPtr)() to unload the file. */
-    Tcl_FSUnloadFileProc **unloadProcPtr;	
-				/* Filled with address of Tcl_FSUnloadFileProc
-				 * function which should be used for
-				 * this file. */
-{
-    Tcl_LoadHandle handle = NULL;
-    int res;
-    
-    res = TclpDlopen(interp, pathPtr, &handle, unloadProcPtr);
-    
-    if (res != TCL_OK) {
-        return res;
+#endif
+
+    /*
+     * We need to reset the result now, because the cross-filesystem copy may
+     * have stored the number of bytes in the result.
+     */
+
+    Tcl_ResetResult(interp);
+
+    retVal = TclLoadFile(interp, copyToPtr, symc, symbols, procPtrs,
+	    &newLoadHandle, &newClientData, &newUnloadProcPtr);
+    if (retVal != TCL_OK) {
+	/*
+	 * The file didn't load successfully.
+	 */
+
+	Tcl_FSDeleteFile(copyToPtr);
+	Tcl_DecrRefCount(copyToPtr);
+	return retVal;
     }
 
-    if (handle == NULL) {
-	return TCL_ERROR;
+    /*
+     * Try to delete the file immediately - this is possible in some OSes, and
+     * avoids any worries about leaving the copy laying around on exit.
+     */
+
+    if (Tcl_FSDeleteFile(copyToPtr) == TCL_OK) {
+	Tcl_DecrRefCount(copyToPtr);
+
+	/*
+	 * We tell our caller about the real shared library which was loaded.
+	 * Note that this does mean that the package list maintained by 'load'
+	 * will store the original (vfs) path alongside the temporary load
+	 * handle and unload proc ptr.
+	 */
+
+	(*handlePtr) = newLoadHandle;
+	(*clientDataPtr) = newClientData;
+	(*unloadProcPtr) = newUnloadProcPtr;
+	Tcl_ResetResult(interp);
+	return TCL_OK;
+    }
+
+    /*
+     * When we unload this file, we need to divert the unloading so we can
+     * unload and cleanup the temporary file correctly.
+     */
+
+    tvdlPtr = (FsDivertLoad *) ckalloc(sizeof(FsDivertLoad));
+
+    /*
+     * Remember three pieces of information. This allows us to cleanup the
+     * diverted load completely, on platforms which allow proper unloading of
+     * code.
+     */
+
+    tvdlPtr->loadHandle = newLoadHandle;
+    tvdlPtr->unloadProcPtr = newUnloadProcPtr;
+
+    if (copyFsPtr != &tclNativeFilesystem) {
+	/*
+	 * copyToPtr is already incremented for this reference.
+	 */
+
+	tvdlPtr->divertedFile = copyToPtr;
+
+	/*
+	 * This is the filesystem we loaded it into. Since we have a reference
+	 * to 'copyToPtr', we already have a refCount on this filesystem, so
+	 * we don't need to worry about it disappearing on us.
+	 */
+
+	tvdlPtr->divertedFilesystem = copyFsPtr;
+	tvdlPtr->divertedFileNativeRep = NULL;
+    } else {
+	/*
+	 * We need the native rep.
+	 */
+
+	tvdlPtr->divertedFileNativeRep = TclNativeDupInternalRep(
+		Tcl_FSGetInternalRep(copyToPtr, copyFsPtr));
+
+	/*
+	 * We don't need or want references to the copied Tcl_Obj or the
+	 * filesystem if it is the native one.
+	 */
+
+	tvdlPtr->divertedFile = NULL;
+	tvdlPtr->divertedFilesystem = NULL;
+	Tcl_DecrRefCount(copyToPtr);
+    }
+
+    copyToPtr = NULL;
+    (*handlePtr) = newLoadHandle;
+    (*clientDataPtr) = (ClientData) tvdlPtr;
+    (*unloadProcPtr) = TclFSUnloadTempFile;
+
+    Tcl_ResetResult(interp);
+    return retVal;
+
+  resolveSymbols:
+    {
+	int i;
+
+	for (i=0 ; i<symc ; i++) {
+	    if (symbols[i] != NULL) {
+		*procPtrs[i] = TclpFindSymbol(interp, *handlePtr, symbols[i]);
+	    }
+	}
     }
-    
-    *clientDataPtr = (ClientData)handle;
-    
-    *proc1Ptr = TclpFindSymbol(interp, handle, sym1);
-    *proc2Ptr = TclpFindSymbol(interp, handle, sym2);
     return TCL_OK;
 }
 
 /*
  *---------------------------------------------------------------------------
  *
- * FSUnloadTempFile --
+ * TclFSUnloadTempFile --
  *
- *	This function is called when we loaded a library of code via
- *	an intermediate temporary file.  This function ensures
- *	the library is correctly unloaded and the temporary file
- *	is correctly deleted.
+ *	This function is called when we loaded a library of code via an
+ *	intermediate temporary file. This function ensures the library is
+ *	correctly unloaded and the temporary file is correctly deleted.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The effects of the 'unload' function called, and of course
- *	the temporary file will be deleted.
+ *	The effects of the 'unload' function called, and of course the
+ *	temporary file will be deleted.
  *
  *---------------------------------------------------------------------------
  */
-static void 
-FSUnloadTempFile(loadHandle)
-    Tcl_LoadHandle loadHandle; /* loadHandle returned by a previous call
-			       * to Tcl_FSLoadFile().  The loadHandle is 
-			       * a token that represents the loaded 
-			       * file. */
+
+void
+TclFSUnloadTempFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * Tcl_FSLoadFile(). The loadHandle is a token
+				 * that represents the loaded file. */
 {
-    FsDivertLoad *tvdlPtr = (FsDivertLoad*)loadHandle;
-    /* 
-     * This test should never trigger, since we give
-     * the client data in the function above.
+    FsDivertLoad *tvdlPtr = (FsDivertLoad *) loadHandle;
+
+    /*
+     * This test should never trigger, since we give the client data in the
+     * function above.
      */
-    if (tvdlPtr == NULL) { return; }
-    
-    /* 
-     * Call the real 'unloadfile' proc we actually used. It is very
-     * important that we call this first, so that the shared library
-     * is actually unloaded by the OS.  Otherwise, the following
-     * 'delete' may well fail because the shared library is still in
-     * use.
+
+    if (tvdlPtr == NULL) {
+	return;
+    }
+
+    /*
+     * Call the real 'unloadfile' proc we actually used. It is very important
+     * that we call this first, so that the shared library is actually
+     * unloaded by the OS. Otherwise, the following 'delete' may well fail
+     * because the shared library is still in use.
      */
+
     if (tvdlPtr->unloadProcPtr != NULL) {
 	(*tvdlPtr->unloadProcPtr)(tvdlPtr->loadHandle);
     }
-    
+
     if (tvdlPtr->divertedFilesystem == NULL) {
-	/* 
-	 * It was the native filesystem, and we have a special
-	 * function available just for this purpose, which we 
-	 * know works even at this late stage.
+	/*
+	 * It was the native filesystem, and we have a special function
+	 * available just for this purpose, which we know works even at this
+	 * late stage.
 	 */
+
 	TclpDeleteFile(tvdlPtr->divertedFileNativeRep);
 	NativeFreeInternalRep(tvdlPtr->divertedFileNativeRep);
+
     } else {
-	/* 
-	 * Remove the temporary file we created.  Note, we may crash
-	 * here because encodings have been taken down already.
+	/*
+	 * Remove the temporary file we created. Note, we may crash here
+	 * because encodings have been taken down already.
 	 */
+
 	if (tvdlPtr->divertedFilesystem->deleteFileProc(tvdlPtr->divertedFile)
-	    != TCL_OK) {
-	    /* 
+		!= TCL_OK) {
+	    /*
 	     * The above may have failed because the filesystem, or something
 	     * it depends upon (e.g. encodings) have been taken down because
 	     * Tcl is exiting.
-	     * 
-	     * We may need to work out how to delete this file more
-	     * robustly (or give the filesystem the information it needs
-	     * to delete the file more robustly).
-	     * 
-	     * In particular, one problem might be that the filesystem
-	     * cannot extract the information it needs from the above
-	     * path object because Tcl's entire filesystem apparatus
-	     * (the code in this file) has been finalized, and it
-	     * refuses to pass the internal representation to the
-	     * filesystem.
+	     *
+	     * We may need to work out how to delete this file more robustly
+	     * (or give the filesystem the information it needs to delete the
+	     * file more robustly).
+	     *
+	     * In particular, one problem might be that the filesystem cannot
+	     * extract the information it needs from the above path object
+	     * because Tcl's entire filesystem apparatus (the code in this
+	     * file) has been finalized, and it refuses to pass the internal
+	     * representation to the filesystem.
 	     */
 	}
-	
-	/* 
-	 * And free up the allocations.  This will also of course remove
-	 * a refCount from the Tcl_Filesystem to which this file belongs,
-	 * which could then free up the filesystem if we are exiting.
+
+	/*
+	 * And free up the allocations. This will also of course remove a
+	 * refCount from the Tcl_Filesystem to which this file belongs, which
+	 * could then free up the filesystem if we are exiting.
 	 */
+
 	Tcl_DecrRefCount(tvdlPtr->divertedFile);
     }
 
@@ -3149,57 +3539,58 @@ FSUnloadTempFile(loadHandle)
  *
  * Tcl_FSLink --
  *
- *	This function replaces the library version of readlink() and
- *	can also be used to make links.  The appropriate function for
- *	the filesystem to which pathPtr belongs will be called.
+ *	This function replaces the library version of readlink() and can also
+ *	be used to make links. The appropriate function for the filesystem to
+ *	which pathPtr belongs will be called.
  *
  * Results:
- *      If toPtr is NULL, then the result is a Tcl_Obj specifying the 
- *      contents of the symbolic link given by 'pathPtr', or NULL if
- *      the symbolic link could not be read.  The result is owned by
- *      the caller, which should call Tcl_DecrRefCount when the result
- *      is no longer needed.
- *      
- *      If toPtr is non-NULL, then the result is toPtr if the link action
- *      was successful, or NULL if not.  In this case the result has no
- *      additional reference count, and need not be freed.  The actual
- *      action to perform is given by the 'linkAction' flags, which is
- *      an or'd combination of:
- *      
- *        TCL_CREATE_SYMBOLIC_LINK
- *        TCL_CREATE_HARD_LINK
- *      
- *      Note that most filesystems will not support linking across
- *      to different filesystems, so this function will usually
- *      fail unless toPtr is in the same FS as pathPtr.
- *      
+ *	If toPtr is NULL, then the result is a Tcl_Obj specifying the contents
+ *	of the symbolic link given by 'pathPtr', or NULL if the symbolic link
+ *	could not be read. The result is owned by the caller, which should
+ *	call Tcl_DecrRefCount when the result is no longer needed.
+ *
+ *	If toPtr is non-NULL, then the result is toPtr if the link action was
+ *	successful, or NULL if not. In this case the result has no additional
+ *	reference count, and need not be freed. The actual action to perform
+ *	is given by the 'linkAction' flags, which is an or'd combination of:
+ *
+ *		TCL_CREATE_SYMBOLIC_LINK
+ *		TCL_CREATE_HARD_LINK
+ *
+ *	Note that most filesystems will not support linking across to
+ *	different filesystems, so this function will usually fail unless toPtr
+ *	is in the same FS as pathPtr.
+ *
  * Side effects:
- *	See readlink() documentation.  A new filesystem link 
- *	object may appear
+ *	See readlink() documentation. A new filesystem link object may appear.
  *
  *---------------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_FSLink(pathPtr, toPtr, linkAction)
-    Tcl_Obj *pathPtr;		/* Path of file to readlink or link */
-    Tcl_Obj *toPtr;		/* NULL or path to be linked to */
-    int linkAction;             /* Action to perform */
+Tcl_FSLink(
+    Tcl_Obj *pathPtr,		/* Path of file to readlink or link */
+    Tcl_Obj *toPtr,		/* NULL or path to be linked to */
+    int linkAction)		/* Action to perform */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+
     if (fsPtr != NULL) {
 	Tcl_FSLinkProc *proc = fsPtr->linkProc;
+
 	if (proc != NULL) {
 	    return (*proc)(pathPtr, toPtr, linkAction);
 	}
     }
+
     /*
-     * If S_IFLNK isn't defined it means that the machine doesn't
-     * support symbolic links, so the file can't possibly be a
-     * symbolic link.  Generate an EINVAL error, which is what
-     * happens on machines that do support symbolic links when
-     * you invoke readlink on a file that isn't a symbolic link.
+     * If S_IFLNK isn't defined it means that the machine doesn't support
+     * symbolic links, so the file can't possibly be a symbolic link. Generate
+     * an EINVAL error, which is what happens on machines that do support
+     * symbolic links when you invoke readlink on a file that isn't a symbolic
+     * link.
      */
+
 #ifndef S_IFLNK
     errno = EINVAL;
 #else
@@ -3213,17 +3604,16 @@ Tcl_FSLink(pathPtr, toPtr, linkAction)
  *
  * Tcl_FSListVolumes --
  *
- *	Lists the currently mounted volumes.  The chain of functions
- *	that have been "inserted" into the filesystem will be called in
- *	succession; each may return a list of volumes, all of which are
- *	added to the result until all mounted file systems are listed.
- *	
- *	Notice that we assume the lists returned by each filesystem
- *	(if non NULL) have been given a refCount for us already.
- *	However, we are NOT allowed to hang on to the list itself
- *	(it belongs to the filesystem we called).  Therefore we
- *	quite naturally add its contents to the result we are
- *	building, and then decrement the refCount.
+ *	Lists the currently mounted volumes. The chain of functions that have
+ *	been "inserted" into the filesystem will be called in succession; each
+ *	may return a list of volumes, all of which are added to the result
+ *	until all mounted file systems are listed.
+ *
+ *	Notice that we assume the lists returned by each filesystem (if non
+ *	NULL) have been given a refCount for us already. However, we are NOT
+ *	allowed to hang on to the list itself (it belongs to the filesystem we
+ *	called). Therefore we quite naturally add its contents to the result
+ *	we are building, and then decrement the refCount.
  *
  * Results:
  *	The list of volumes, in an object which has refCount 0.
@@ -3239,15 +3629,16 @@ Tcl_FSListVolumes(void)
 {
     FilesystemRecord *fsRecPtr;
     Tcl_Obj *resultPtr = Tcl_NewObj();
-    
+
     /*
-     * Call each of the "listVolumes" function in succession.
-     * A non-NULL return value indicates the particular function has
-     * succeeded.  We call all the functions registered, since we want
-     * a list of all drives from all filesystems.
+     * Call each of the "listVolumes" function in succession. A non-NULL
+     * return value indicates the particular function has succeeded. We call
+     * all the functions registered, since we want a list of all drives from
+     * all filesystems.
      */
 
     fsRecPtr = FsGetFirstFilesystem();
+    Claim();
     while (fsRecPtr != NULL) {
 	Tcl_FSListVolumesProc *proc = fsRecPtr->fsPtr->listVolumesProc;
 	if (proc != NULL) {
@@ -3259,7 +3650,8 @@ Tcl_FSListVolumes(void)
 	}
 	fsRecPtr = fsRecPtr->nextPtr;
     }
-    
+    Disclaim();
+
     return resultPtr;
 }
 
@@ -3268,13 +3660,12 @@ Tcl_FSListVolumes(void)
  *
  * FsListMounts --
  *
- *	List all mounts within the given directory, which match the
- *	given pattern.
+ *	List all mounts within the given directory, which match the given
+ *	pattern.
  *
  * Results:
- *	The list of mounts, in a list object which has refCount 0, or
- *	NULL if we didn't even find any filesystems to try to list
- *	mounts.
+ *	The list of mounts, in a list object which has refCount 0, or NULL if
+ *	we didn't even find any filesystems to try to list mounts.
  *
  * Side effects:
  *	None
@@ -3282,27 +3673,28 @@ Tcl_FSListVolumes(void)
  *---------------------------------------------------------------------------
  */
 
-static Tcl_Obj*
-FsListMounts(pathPtr, pattern)
-    Tcl_Obj *pathPtr;	        /* Contains path to directory to search. */
-    CONST char *pattern;	/* Pattern to match against. */
+static Tcl_Obj *
+FsListMounts(
+    Tcl_Obj *pathPtr,		/* Contains path to directory to search. */
+    const char *pattern)	/* Pattern to match against. */
 {
     FilesystemRecord *fsRecPtr;
     Tcl_GlobTypeData mountsOnly = { TCL_GLOB_TYPE_MOUNT, 0, NULL, NULL };
     Tcl_Obj *resultPtr = NULL;
-    
+
     /*
-     * Call each of the "listMounts" functions in succession.
-     * A non-NULL return value indicates the particular function has
-     * succeeded.  We call all the functions registered, since we want
-     * a list from each filesystems.
+     * Call each of the "matchInDirectory" functions in succession, with the
+     * specific type information 'mountsOnly'. A non-NULL return value
+     * indicates the particular function has succeeded. We call all the
+     * functions registered, since we want a list from each filesystems.
      */
 
     fsRecPtr = FsGetFirstFilesystem();
+    Claim();
     while (fsRecPtr != NULL) {
 	if (fsRecPtr->fsPtr != &tclNativeFilesystem) {
-	    Tcl_FSMatchInDirectoryProc *proc = 
-				  fsRecPtr->fsPtr->matchInDirectoryProc;
+	    Tcl_FSMatchInDirectoryProc *proc =
+		    fsRecPtr->fsPtr->matchInDirectoryProc;
 	    if (proc != NULL) {
 		if (resultPtr == NULL) {
 		    resultPtr = Tcl_NewObj();
@@ -3312,7 +3704,8 @@ FsListMounts(pathPtr, pattern)
 	}
 	fsRecPtr = fsRecPtr->nextPtr;
     }
-    
+    Disclaim();
+
     return resultPtr;
 }
 
@@ -3321,14 +3714,14 @@ FsListMounts(pathPtr, pattern)
  *
  * Tcl_FSSplitPath --
  *
- *      This function takes the given Tcl_Obj, which should be a valid
- *      path, and returns a Tcl List object containing each segment of
- *      that path as an element.
+ *	This function takes the given Tcl_Obj, which should be a valid path,
+ *	and returns a Tcl List object containing each segment of that path as
+ *	an element.
  *
  * Results:
- *      Returns list object with refCount of zero.  If the passed in
- *      lenPtr is non-NULL, we use it to return the number of elements
- *      in the returned list.
+ *	Returns list object with refCount of zero. If the passed in lenPtr is
+ *	non-NULL, we use it to return the number of elements in the returned
+ *	list.
  *
  * Side effects:
  *	None.
@@ -3336,23 +3729,23 @@ FsListMounts(pathPtr, pattern)
  *---------------------------------------------------------------------------
  */
 
-Tcl_Obj* 
-Tcl_FSSplitPath(pathPtr, lenPtr)
-    Tcl_Obj *pathPtr;		/* Path to split. */
-    int *lenPtr;		/* int to store number of path elements. */
+Tcl_Obj *
+Tcl_FSSplitPath(
+    Tcl_Obj *pathPtr,		/* Path to split. */
+    int *lenPtr)		/* int to store number of path elements. */
 {
-    Tcl_Obj *result = NULL;  /* Needed only to prevent gcc warnings. */
+    Tcl_Obj *result = NULL;	/* Needed only to prevent gcc warnings. */
     Tcl_Filesystem *fsPtr;
     char separator = '/';
     int driveNameLength;
     char *p;
-    
+
     /*
-     * Perform platform specific splitting. 
+     * Perform platform specific splitting.
      */
 
-    if (FSGetPathType(pathPtr, &fsPtr, &driveNameLength) 
-	== TCL_PATH_ABSOLUTE) {
+    if (TclFSGetPathType(pathPtr, &fsPtr,
+	    &driveNameLength) == TCL_PATH_ABSOLUTE) {
 	if (fsPtr == &tclNativeFilesystem) {
 	    return TclpNativeSplitPath(pathPtr, lenPtr);
 	}
@@ -3360,27 +3753,35 @@ Tcl_FSSplitPath(pathPtr, lenPtr)
 	return TclpNativeSplitPath(pathPtr, lenPtr);
     }
 
-    /* We assume separators are single characters */
+    /*
+     * We assume separators are single characters.
+     */
+
     if (fsPtr->filesystemSeparatorProc != NULL) {
 	Tcl_Obj *sep = (*fsPtr->filesystemSeparatorProc)(pathPtr);
 	if (sep != NULL) {
+	    Tcl_IncrRefCount(sep);
 	    separator = Tcl_GetString(sep)[0];
+	    Tcl_DecrRefCount(sep);
 	}
     }
-    
-    /* 
-     * Place the drive name as first element of the
-     * result list.  The drive name may contain strange
-     * characters, like colons and multiple forward slashes
-     * (for example 'ftp://' is a valid vfs drive name)
+
+    /*
+     * Place the drive name as first element of the result list. The drive
+     * name may contain strange characters, like colons and multiple forward
+     * slashes (for example 'ftp://' is a valid vfs drive name)
      */
+
     result = Tcl_NewObj();
     p = Tcl_GetString(pathPtr);
-    Tcl_ListObjAppendElement(NULL, result, 
-			     Tcl_NewStringObj(p, driveNameLength));
-    p+= driveNameLength;
-    			
-    /* Add the remaining path elements to the list */
+    Tcl_ListObjAppendElement(NULL, result,
+	    Tcl_NewStringObj(p, driveNameLength));
+    p += driveNameLength;
+
+    /*
+     * Add the remaining path elements to the list.
+     */
+
     for (;;) {
 	char *elementStart = p;
 	int length;
@@ -3391,7 +3792,7 @@ Tcl_FSSplitPath(pathPtr, lenPtr)
 	if (length > 0) {
 	    Tcl_Obj *nextElt;
 	    if (elementStart[0] == '~') {
-		nextElt = Tcl_NewStringObj("./",2);
+		TclNewLiteralStringObj(nextElt, "./");
 		Tcl_AppendToObj(nextElt, elementStart, length);
 	    } else {
 		nextElt = Tcl_NewStringObj(elementStart, length);
@@ -3402,53 +3803,85 @@ Tcl_FSSplitPath(pathPtr, lenPtr)
 	    break;
 	}
     }
-			     
+
     /*
      * Compute the number of elements in the result.
      */
 
     if (lenPtr != NULL) {
-	Tcl_ListObjLength(NULL, result, lenPtr);
+	TclListObjLength(NULL, result, lenPtr);
     }
     return result;
 }
 
-/* Simple helper function */
-Tcl_Obj* 
-TclFSInternalToNormalized(fromFilesystem, clientData, fsRecPtrPtr)
-    Tcl_Filesystem *fromFilesystem;
-    ClientData clientData;
-    FilesystemRecord **fsRecPtrPtr;
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetPathType --
+ *
+ *	Helper function used by FSGetPathType.
+ *
+ * Results:
+ *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
+ *	TCL_PATH_VOLUME_RELATIVE. The filesystem reference will be set if and
+ *	only if it is non-NULL and the function's return value is
+ *	TCL_PATH_ABSOLUTE.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_PathType
+TclGetPathType(
+    Tcl_Obj *pathPtr,		/* Path to determine type for */
+    Tcl_Filesystem **filesystemPtrPtr,
+				/* If absolute path and this is not NULL, then
+				 * set to the filesystem which claims this
+				 * path. */
+    int *driveNameLengthPtr,	/* If the path is absolute, and this is
+				 * non-NULL, then set to the length of the
+				 * driveName. */
+    Tcl_Obj **driveNameRef)	/* If the path is absolute, and this is
+				 * non-NULL, then set to the name of the
+				 * drive, network-volume which contains the
+				 * path, already with a refCount for the
+				 * caller. */
 {
-    FilesystemRecord *fsRecPtr = FsGetFirstFilesystem();
+    int pathLen;
+    char *path;
+    Tcl_PathType type;
 
-    while (fsRecPtr != NULL) {
-	if (fsRecPtr->fsPtr == fromFilesystem) {
-	    *fsRecPtrPtr = fsRecPtr;
-	    break;
+    path = Tcl_GetStringFromObj(pathPtr, &pathLen);
+
+    type = TclFSNonnativePathType(path, pathLen, filesystemPtrPtr,
+	    driveNameLengthPtr, driveNameRef);
+
+    if (type != TCL_PATH_ABSOLUTE) {
+	type = TclpGetNativePathType(pathPtr, driveNameLengthPtr,
+		driveNameRef);
+	if ((type == TCL_PATH_ABSOLUTE) && (filesystemPtrPtr != NULL)) {
+	    *filesystemPtrPtr = &tclNativeFilesystem;
 	}
-	fsRecPtr = fsRecPtr->nextPtr;
-    }
-    
-    if ((fsRecPtr != NULL) 
-      && (fromFilesystem->internalToNormalizedProc != NULL)) {
-	return (*fromFilesystem->internalToNormalizedProc)(clientData);
-    } else {
-	return NULL;
     }
+    return type;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * GetPathType --
+ * TclFSNonnativePathType --
  *
- *	Helper function used by FSGetPathType.
+ *	Helper function used by TclGetPathType. Its purpose is to check
+ *	whether the given path starts with a string which corresponds to a
+ *	file volume in any registered filesystem except the native one. For
+ *	speed and historical reasons the native filesystem has special
+ *	hard-coded checks dotted here and there in the filesystem code.
  *
  * Results:
- *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
- *	TCL_PATH_VOLUME_RELATIVE.  The filesystem reference will
- *	be set if and only if it is non-NULL and the function's 
+ *	Returns one of TCL_PATH_ABSOLUTE or TCL_PATH_RELATIVE. The filesystem
+ *	reference will be set if and only if it is non-NULL and the function's
  *	return value is TCL_PATH_ABSOLUTE.
  *
  * Side effects:
@@ -3457,64 +3890,73 @@ TclFSInternalToNormalized(fromFilesystem, clientData, fsRecPtrPtr)
  *----------------------------------------------------------------------
  */
 
-static Tcl_PathType
-GetPathType(pathObjPtr, filesystemPtrPtr, driveNameLengthPtr, driveNameRef)
-    Tcl_Obj *pathObjPtr;
-    Tcl_Filesystem **filesystemPtrPtr;
-    int *driveNameLengthPtr;
-    Tcl_Obj **driveNameRef;
+Tcl_PathType
+TclFSNonnativePathType(
+    const char *path,		/* Path to determine type for */
+    int pathLen,		/* Length of the path */
+    Tcl_Filesystem **filesystemPtrPtr,
+				/* If absolute path and this is not NULL, then
+				 * set to the filesystem which claims this
+				 * path. */
+    int *driveNameLengthPtr,	/* If the path is absolute, and this is
+				 * non-NULL, then set to the length of the
+				 * driveName. */
+    Tcl_Obj **driveNameRef)	/* If the path is absolute, and this is
+				 * non-NULL, then set to the name of the
+				 * drive, network-volume which contains the
+				 * path, already with a refCount for the
+				 * caller. */
 {
     FilesystemRecord *fsRecPtr;
-    int pathLen;
-    char *path;
     Tcl_PathType type = TCL_PATH_RELATIVE;
-    
-    path = Tcl_GetStringFromObj(pathObjPtr, &pathLen);
 
     /*
-     * Call each of the "listVolumes" function in succession, checking
-     * whether the given path is an absolute path on any of the volumes
-     * returned (this is done by checking whether the path's prefix
-     * matches).
+     * Call each of the "listVolumes" function in succession, checking whether
+     * the given path is an absolute path on any of the volumes returned (this
+     * is done by checking whether the path's prefix matches).
      */
 
     fsRecPtr = FsGetFirstFilesystem();
+    Claim();
     while (fsRecPtr != NULL) {
 	Tcl_FSListVolumesProc *proc = fsRecPtr->fsPtr->listVolumesProc;
-	/* 
+
+	/*
 	 * We want to skip the native filesystem in this loop because
-	 * otherwise we won't necessarily pass all the Tcl testsuite --
-	 * this is because some of the tests artificially change the
-	 * current platform (between mac, win, unix) but the list
-	 * of volumes we get by calling (*proc) will reflect the current
-	 * (real) platform only and this may cause some tests to fail.
-	 * In particular, on unix '/' will match the beginning of 
-	 * certain absolute Windows paths starting '//' and those tests
-	 * will go wrong.
-	 * 
-	 * Besides these test-suite issues, there is one other reason
-	 * to skip the native filesystem --- since the tclFilename.c
-	 * code has nice fast 'absolute path' checkers, we don't want
-	 * to waste time repeating that effort here, and this 
-	 * function is actually called quite often, so if we can
-	 * save the overhead of the native filesystem returning us
-	 * a list of volumes all the time, it is better.
+	 * otherwise we won't necessarily pass all the Tcl testsuite -- this
+	 * is because some of the tests artificially change the current
+	 * platform (between win, unix) but the list of volumes we get by
+	 * calling (*proc) will reflect the current (real) platform only and
+	 * this may cause some tests to fail. In particular, on unix '/' will
+	 * match the beginning of certain absolute Windows paths starting '//'
+	 * and those tests will go wrong.
+	 *
+	 * Besides these test-suite issues, there is one other reason to skip
+	 * the native filesystem --- since the tclFilename.c code has nice
+	 * fast 'absolute path' checkers, we don't want to waste time
+	 * repeating that effort here, and this function is actually called
+	 * quite often, so if we can save the overhead of the native
+	 * filesystem returning us a list of volumes all the time, it is
+	 * better.
 	 */
+
 	if ((fsRecPtr->fsPtr != &tclNativeFilesystem) && (proc != NULL)) {
 	    int numVolumes;
 	    Tcl_Obj *thisFsVolumes = (*proc)();
+
 	    if (thisFsVolumes != NULL) {
-		if (Tcl_ListObjLength(NULL, thisFsVolumes, 
-				      &numVolumes) != TCL_OK) {
-		    /* 
-		     * This is VERY bad; the Tcl_FSListVolumesProc
-		     * didn't return a valid list.  Set numVolumes to
-		     * -1 so that we skip the while loop below and just
-		     * return with the current value of 'type'.
-		     * 
-		     * It would be better if we could signal an error
-		     * here (but panic seems a bit excessive).
+		if (Tcl_ListObjLength(NULL, thisFsVolumes, &numVolumes)
+			!= TCL_OK) {
+		    /*
+		     * This is VERY bad; the Tcl_FSListVolumesProc didn't
+		     * return a valid list. Set numVolumes to -1 so that we
+		     * skip the while loop below and just return with the
+		     * current value of 'type'.
+		     *
+		     * It would be better if we could signal an error here
+		     * (but Tcl_Panic seems a bit excessive).
 		     */
+
 		    numVolumes = -1;
 		}
 		while (numVolumes > 0) {
@@ -3545,21 +3987,16 @@ GetPathType(pathObjPtr, filesystemPtrPtr, driveNameLengthPtr, driveNameRef)
 		}
 		Tcl_DecrRefCount(thisFsVolumes);
 		if (type == TCL_PATH_ABSOLUTE) {
-		    /* We don't need to examine any more filesystems */
+		    /*
+		     * We don't need to examine any more filesystems.
+		     */
 		    break;
 		}
 	    }
 	}
 	fsRecPtr = fsRecPtr->nextPtr;
     }
-    
-    if (type != TCL_PATH_ABSOLUTE) {
-	type = TclpGetNativePathType(pathObjPtr, driveNameLengthPtr, 
-				     driveNameRef);
-	if ((type == TCL_PATH_ABSOLUTE) && (filesystemPtrPtr != NULL)) {
-	    *filesystemPtrPtr = &tclNativeFilesystem;
-	}
-    }
+    Disclaim();
     return type;
 }
 
@@ -3568,12 +4005,12 @@ GetPathType(pathObjPtr, filesystemPtrPtr, driveNameLengthPtr, driveNameRef)
  *
  * Tcl_FSRenameFile --
  *
- *	If the two paths given belong to the same filesystem, we call
- *	that filesystems rename function.  Otherwise we simply
- *	return the posix error 'EXDEV', and -1.
+ *	If the two paths given belong to the same filesystem, we call that
+ *	filesystems rename function. Otherwise we simply return the POSIX
+ *	error 'EXDEV', and -1.
  *
  * Results:
- *      Standard Tcl error code if a function was called.
+ *	Standard Tcl error code if a function was called.
  *
  * Side effects:
  *	A file may be renamed.
@@ -3582,21 +4019,21 @@ GetPathType(pathObjPtr, filesystemPtrPtr, driveNameLengthPtr, driveNameRef)
  */
 
 int
-Tcl_FSRenameFile(srcPathPtr, destPathPtr)
-    Tcl_Obj* srcPathPtr;	/* Pathname of file or dir to be renamed
+Tcl_FSRenameFile(
+    Tcl_Obj* srcPathPtr,	/* Pathname of file or dir to be renamed
 				 * (UTF-8). */
-    Tcl_Obj *destPathPtr;	/* New pathname of file or directory
+    Tcl_Obj *destPathPtr)	/* New pathname of file or directory
 				 * (UTF-8). */
 {
     int retVal = -1;
-    Tcl_Filesystem *fsPtr, *fsPtr2;
+    const Tcl_Filesystem *fsPtr, *fsPtr2;
     fsPtr = Tcl_FSGetFileSystemForPath(srcPathPtr);
     fsPtr2 = Tcl_FSGetFileSystemForPath(destPathPtr);
 
-    if (fsPtr == fsPtr2 && fsPtr != NULL) {
+    if ((fsPtr == fsPtr2) && (fsPtr != NULL)) {
 	Tcl_FSRenameFileProc *proc = fsPtr->renameFileProc;
 	if (proc != NULL) {
-	    retVal =  (*proc)(srcPathPtr, destPathPtr);
+	    retVal = (*proc)(srcPathPtr, destPathPtr);
 	}
     }
     if (retVal == -1) {
@@ -3610,16 +4047,16 @@ Tcl_FSRenameFile(srcPathPtr, destPathPtr)
  *
  * Tcl_FSCopyFile --
  *
- *	If the two paths given belong to the same filesystem, we call
- *	that filesystem's copy function.  Otherwise we simply
- *	return the posix error 'EXDEV', and -1.
- *	
- *	Note that in the native filesystems, 'copyFileProc' is defined
- *	to copy soft links (i.e. it copies the links themselves, not
- *	the things they point to).
+ *	If the two paths given belong to the same filesystem, we call that
+ *	filesystem's copy function. Otherwise we simply return the POSIX error
+ *	'EXDEV', and -1.
+ *
+ *	Note that in the native filesystems, 'copyFileProc' is defined to copy
+ *	soft links (i.e. it copies the links themselves, not the things they
+ *	point to).
  *
  * Results:
- *      Standard Tcl error code if a function was called.
+ *	Standard Tcl error code if a function was called.
  *
  * Side effects:
  *	A file may be copied.
@@ -3627,13 +4064,13 @@ Tcl_FSRenameFile(srcPathPtr, destPathPtr)
  *---------------------------------------------------------------------------
  */
 
-int 
-Tcl_FSCopyFile(srcPathPtr, destPathPtr)
-    Tcl_Obj* srcPathPtr;	/* Pathname of file to be copied (UTF-8). */
-    Tcl_Obj *destPathPtr;	/* Pathname of file to copy to (UTF-8). */
+int
+Tcl_FSCopyFile(
+    Tcl_Obj *srcPathPtr,	/* Pathname of file to be copied (UTF-8). */
+    Tcl_Obj *destPathPtr)	/* Pathname of file to copy to (UTF-8). */
 {
     int retVal = -1;
-    Tcl_Filesystem *fsPtr, *fsPtr2;
+    const Tcl_Filesystem *fsPtr, *fsPtr2;
     fsPtr = Tcl_FSGetFileSystemForPath(srcPathPtr);
     fsPtr2 = Tcl_FSGetFileSystemForPath(destPathPtr);
 
@@ -3654,64 +4091,75 @@ Tcl_FSCopyFile(srcPathPtr, destPathPtr)
  *
  * TclCrossFilesystemCopy --
  *
- *	Helper for above function, and for Tcl_FSLoadFile, to copy
- *	files from one filesystem to another.  This function will
- *	overwrite the target file if it already exists.
+ *	Helper for above function, and for Tcl_FSLoadFile, to copy files from
+ *	one filesystem to another. This function will overwrite the target
+ *	file if it already exists.
  *
  * Results:
- *      Standard Tcl error code.
+ *	Standard Tcl error code.
  *
  * Side effects:
  *	A file may be created.
  *
  *---------------------------------------------------------------------------
  */
-int 
-TclCrossFilesystemCopy(interp, source, target) 
-    Tcl_Interp *interp; /* For error messages */
-    Tcl_Obj *source;	/* Pathname of file to be copied (UTF-8). */
-    Tcl_Obj *target;	/* Pathname of file to copy to (UTF-8). */
+int
+TclCrossFilesystemCopy(
+    Tcl_Interp *interp,		/* For error messages */
+    Tcl_Obj *source,		/* Pathname of file to be copied (UTF-8). */
+    Tcl_Obj *target)		/* Pathname of file to copy to (UTF-8). */
 {
     int result = TCL_ERROR;
     int prot = 0666;
-    
-    Tcl_Channel out = Tcl_FSOpenFileChannel(interp, target, "w", prot);
-    if (out != NULL) {
-	/* It looks like we can copy it over */
-	Tcl_Channel in = Tcl_FSOpenFileChannel(interp, source, 
-					       "r", prot);
-	if (in == NULL) {
-	    /* This is very strange, we checked this above */
-	    Tcl_Close(interp, out);
-	} else {
-	    Tcl_StatBuf sourceStatBuf;
-	    struct utimbuf tval;
-	    /* 
-	     * Copy it synchronously.  We might wish to add an
-	     * asynchronous option to support vfs's which are
-	     * slow (e.g. network sockets).
-	     */
-	    Tcl_SetChannelOption(interp, in, "-translation", "binary");
-	    Tcl_SetChannelOption(interp, out, "-translation", "binary");
-	    
-	    if (TclCopyChannel(interp, in, out, -1, NULL) == TCL_OK) {
-		result = TCL_OK;
-	    }
-	    /* 
-	     * If the copy failed, assume that copy channel left
-	     * a good error message.
-	     */
-	    Tcl_Close(interp, in);
-	    Tcl_Close(interp, out);
-	    
-	    /* Set modification date of copied file */
-	    if (Tcl_FSLstat(source, &sourceStatBuf) == 0) {
-		tval.actime = sourceStatBuf.st_atime;
-		tval.modtime = sourceStatBuf.st_mtime;
-		Tcl_FSUtime(target, &tval);
-	    }
-	}
+    Tcl_Channel in, out;
+    Tcl_StatBuf sourceStatBuf;
+    struct utimbuf tval;
+
+    out = Tcl_FSOpenFileChannel(interp, target, "wb", prot);
+    if (out == NULL) {
+	/*
+	 * It looks like we cannot copy it over. Bail out...
+	 */
+	goto done;
+    }
+
+    in = Tcl_FSOpenFileChannel(interp, source, "rb", prot);
+    if (in == NULL) {
+	/*
+	 * This is very strange, caller should have checked this...
+	 */
+
+	Tcl_Close(interp, out);
+	goto done;
+    }
+
+    /*
+     * Copy it synchronously. We might wish to add an asynchronous option to
+     * support vfs's which are slow (e.g. network sockets).
+     */
+
+    if (TclCopyChannel(interp, in, out, -1, NULL) == TCL_OK) {
+	result = TCL_OK;
+    }
+
+    /*
+     * If the copy failed, assume that copy channel left a good error message.
+     */
+
+    Tcl_Close(interp, in);
+    Tcl_Close(interp, out);
+
+    /*
+     * Set modification date of copied file.
+     */
+
+    if (Tcl_FSLstat(source, &sourceStatBuf) == 0) {
+	tval.actime = sourceStatBuf.st_atime;
+	tval.modtime = sourceStatBuf.st_mtime;
+	Tcl_FSUtime(target, &tval);
     }
+
+  done:
     return result;
 }
 
@@ -3720,11 +4168,11 @@ TclCrossFilesystemCopy(interp, source, target)
  *
  * Tcl_FSDeleteFile --
  *
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	The appropriate function for the filesystem to which pathPtr belongs
+ *	will be called.
  *
  * Results:
- *      Standard Tcl error code.
+ *	Standard Tcl error code.
  *
  * Side effects:
  *	A file may be deleted.
@@ -3733,10 +4181,10 @@ TclCrossFilesystemCopy(interp, source, target)
  */
 
 int
-Tcl_FSDeleteFile(pathPtr)
-    Tcl_Obj *pathPtr;		/* Pathname of file to be removed (UTF-8). */
+Tcl_FSDeleteFile(
+    Tcl_Obj *pathPtr)		/* Pathname of file to be removed (UTF-8). */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSDeleteFileProc *proc = fsPtr->deleteFileProc;
 	if (proc != NULL) {
@@ -3752,11 +4200,11 @@ Tcl_FSDeleteFile(pathPtr)
  *
  * Tcl_FSCreateDirectory --
  *
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	The appropriate function for the filesystem to which pathPtr belongs
+ *	will be called.
  *
  * Results:
- *      Standard Tcl error code.
+ *	Standard Tcl error code.
  *
  * Side effects:
  *	A directory may be created.
@@ -3765,10 +4213,10 @@ Tcl_FSDeleteFile(pathPtr)
  */
 
 int
-Tcl_FSCreateDirectory(pathPtr)
-    Tcl_Obj *pathPtr;		/* Pathname of directory to create (UTF-8). */
+Tcl_FSCreateDirectory(
+    Tcl_Obj *pathPtr)		/* Pathname of directory to create (UTF-8). */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
     if (fsPtr != NULL) {
 	Tcl_FSCreateDirectoryProc *proc = fsPtr->createDirectoryProc;
 	if (proc != NULL) {
@@ -3784,12 +4232,12 @@ Tcl_FSCreateDirectory(pathPtr)
  *
  * Tcl_FSCopyDirectory --
  *
- *	If the two paths given belong to the same filesystem, we call
- *	that filesystems copy-directory function.  Otherwise we simply
- *	return the posix error 'EXDEV', and -1.
+ *	If the two paths given belong to the same filesystem, we call that
+ *	filesystems copy-directory function. Otherwise we simply return the
+ *	POSIX error 'EXDEV', and -1.
  *
  * Results:
- *      Standard Tcl error code if a function was called.
+ *	Standard Tcl error code if a function was called.
  *
  * Side effects:
  *	A directory may be copied.
@@ -3798,16 +4246,16 @@ Tcl_FSCreateDirectory(pathPtr)
  */
 
 int
-Tcl_FSCopyDirectory(srcPathPtr, destPathPtr, errorPtr)
-    Tcl_Obj* srcPathPtr;	/* Pathname of directory to be copied
+Tcl_FSCopyDirectory(
+    Tcl_Obj* srcPathPtr,	/* Pathname of directory to be copied
 				 * (UTF-8). */
-    Tcl_Obj *destPathPtr;	/* Pathname of target directory (UTF-8). */
-    Tcl_Obj **errorPtr;	        /* If non-NULL, then will be set to a
-                       	         * new object containing name of file
-                       	         * causing error, with refCount 1. */
+    Tcl_Obj *destPathPtr,	/* Pathname of target directory (UTF-8). */
+    Tcl_Obj **errorPtr)		/* If non-NULL, then will be set to a new
+				 * object containing name of file causing
+				 * error, with refCount 1. */
 {
     int retVal = -1;
-    Tcl_Filesystem *fsPtr, *fsPtr2;
+    const Tcl_Filesystem *fsPtr, *fsPtr2;
     fsPtr = Tcl_FSGetFileSystemForPath(srcPathPtr);
     fsPtr2 = Tcl_FSGetFileSystemForPath(destPathPtr);
 
@@ -3828,11 +4276,11 @@ Tcl_FSCopyDirectory(srcPathPtr, destPathPtr, errorPtr)
  *
  * Tcl_FSRemoveDirectory --
  *
- *	The appropriate function for the filesystem to which pathPtr
- *	belongs will be called.
+ *	The appropriate function for the filesystem to which pathPtr belongs
+ *	will be called.
  *
  * Results:
- *      Standard Tcl error code.
+ *	Standard Tcl error code.
  *
  * Side effects:
  *	A directory may be deleted.
@@ -3841,49 +4289,53 @@ Tcl_FSCopyDirectory(srcPathPtr, destPathPtr, errorPtr)
  */
 
 int
-Tcl_FSRemoveDirectory(pathPtr, recursive, errorPtr)
-    Tcl_Obj *pathPtr;		/* Pathname of directory to be removed
+Tcl_FSRemoveDirectory(
+    Tcl_Obj *pathPtr,		/* Pathname of directory to be removed
 				 * (UTF-8). */
-    int recursive;		/* If non-zero, removes directories that
-				 * are nonempty.  Otherwise, will only remove
-				 * empty directories. */
-    Tcl_Obj **errorPtr;	        /* If non-NULL, then will be set to a
-				 * new object containing name of file
-				 * causing error, with refCount 1. */
+    int recursive,		/* If non-zero, removes directories that are
+				 * nonempty. Otherwise, will only remove empty
+				 * directories. */
+    Tcl_Obj **errorPtr)		/* If non-NULL, then will be set to a new
+				 * object containing name of file causing
+				 * error, with refCount 1. */
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
-    if (fsPtr != NULL) {
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+    if (fsPtr != NULL && fsPtr->removeDirectoryProc != NULL) {
 	Tcl_FSRemoveDirectoryProc *proc = fsPtr->removeDirectoryProc;
-	if (proc != NULL) {
-	    if (recursive) {
-	        /* 
-	         * We check whether the cwd lies inside this directory
-	         * and move it if it does.
-	         */
-		Tcl_Obj *cwdPtr = Tcl_FSGetCwd(NULL);
-		if (cwdPtr != NULL) {
-		    char *cwdStr, *normPathStr;
-		    int cwdLen, normLen;
-		    Tcl_Obj *normPath = Tcl_FSGetNormalizedPath(NULL, pathPtr);
-		    if (normPath != NULL) {
-		        normPathStr = Tcl_GetStringFromObj(normPath, &normLen);
-			cwdStr = Tcl_GetStringFromObj(cwdPtr, &cwdLen);
-			if ((cwdLen >= normLen) && (strncmp(normPathStr, 
-					cwdStr, (size_t) normLen) == 0)) {
-			    /* 
-			     * the cwd is inside the directory, so we
-			     * perform a 'cd [file dirname $path]'
-			     */
-			    Tcl_Obj *dirPtr = TclFileDirname(NULL, pathPtr);
-			    Tcl_FSChdir(dirPtr);
-			    Tcl_DecrRefCount(dirPtr);
-			}
+	if (recursive) {
+	    /*
+	     * We check whether the cwd lies inside this directory and move it
+	     * if it does.
+	     */
+
+	    Tcl_Obj *cwdPtr = Tcl_FSGetCwd(NULL);
+
+	    if (cwdPtr != NULL) {
+		char *cwdStr, *normPathStr;
+		int cwdLen, normLen;
+		Tcl_Obj *normPath = Tcl_FSGetNormalizedPath(NULL, pathPtr);
+
+		if (normPath != NULL) {
+		    normPathStr = Tcl_GetStringFromObj(normPath, &normLen);
+		    cwdStr = Tcl_GetStringFromObj(cwdPtr, &cwdLen);
+		    if ((cwdLen >= normLen) && (strncmp(normPathStr, cwdStr,
+			    (size_t) normLen) == 0)) {
+			/*
+			 * The cwd is inside the directory, so we perform a
+			 * 'cd [file dirname $path]'.
+			 */
+
+			Tcl_Obj *dirPtr = TclPathPart(NULL, pathPtr,
+				TCL_PATH_DIRNAME);
+
+			Tcl_FSChdir(dirPtr);
+			Tcl_DecrRefCount(dirPtr);
 		    }
-		    Tcl_DecrRefCount(cwdPtr);
 		}
+		Tcl_DecrRefCount(cwdPtr);
 	    }
-	    return (*proc)(pathPtr, recursive, errorPtr);
 	}
+	return (*proc)(pathPtr, recursive, errorPtr);
     }
     Tcl_SetErrno(ENOENT);
     return -1;
@@ -3894,13 +4346,13 @@ Tcl_FSRemoveDirectory(pathPtr, recursive, errorPtr)
  *
  * Tcl_FSGetFileSystemForPath --
  *
- *      This function determines which filesystem to use for a
- *      particular path object, and returns the filesystem which
- *      accepts this file.  If no filesystem will accept this object
- *      as a valid file path, then NULL is returned.
+ *	This function determines which filesystem to use for a particular path
+ *	object, and returns the filesystem which accepts this file. If no
+ *	filesystem will accept this object as a valid file path, then NULL is
+ *	returned.
  *
  * Results:
-.*      NULL or a filesystem which will accept this path.
+ *	NULL or a filesystem which will accept this path.
  *
  * Side effects:
  *	The object may be converted to a path type.
@@ -3908,61 +4360,68 @@ Tcl_FSRemoveDirectory(pathPtr, recursive, errorPtr)
  *---------------------------------------------------------------------------
  */
 
-Tcl_Filesystem*
-Tcl_FSGetFileSystemForPath(pathObjPtr)
-    Tcl_Obj* pathObjPtr;
+Tcl_Filesystem *
+Tcl_FSGetFileSystemForPath(
+    Tcl_Obj* pathPtr)
 {
     FilesystemRecord *fsRecPtr;
     Tcl_Filesystem* retVal = NULL;
-    
-    /* 
-     * If the object has a refCount of zero, we reject it.  This
-     * is to avoid possible segfaults or nondeterministic memory
-     * leaks (i.e. the user doesn't know if they should decrement
-     * the ref count on return or not).
+
+    if (pathPtr == NULL) {
+	Tcl_Panic("Tcl_FSGetFileSystemForPath called with NULL object");
+	return NULL;
+    }
+
+    /*
+     * If the object has a refCount of zero, we reject it. This is to avoid
+     * possible segfaults or nondeterministic memory leaks (i.e. the user
+     * doesn't know if they should decrement the ref count on return or not).
      */
-    
-    if (pathObjPtr->refCount == 0) {
-	panic("Tcl_FSGetFileSystemForPath called with object with refCount == 0");
+
+    if (pathPtr->refCount == 0) {
+	Tcl_Panic("Tcl_FSGetFileSystemForPath called with object with refCount == 0");
 	return NULL;
     }
-    
-    /* 
-     * Check if the filesystem has changed in some way since
-     * this object's internal representation was calculated.
-     * Before doing that, assure we have the most up-to-date
-     * copy of the master filesystem. This is accomplished
-     * by the FsGetFirstFilesystem() call.
+
+    /*
+     * Check if the filesystem has changed in some way since this object's
+     * internal representation was calculated. Before doing that, assure we
+     * have the most up-to-date copy of the master filesystem. This is
+     * accomplished by the FsGetFirstFilesystem() call.
      */
 
     fsRecPtr = FsGetFirstFilesystem();
+    Claim();
 
-    if (TclFSEnsureEpochOk(pathObjPtr, &retVal) != TCL_OK) {
+    if (TclFSEnsureEpochOk(pathPtr, &retVal) != TCL_OK) {
+	Disclaim();
 	return NULL;
     }
 
     /*
-     * Call each of the "pathInFilesystem" functions in succession.  A
-     * non-return value of -1 indicates the particular function has
-     * succeeded.
+     * Call each of the "pathInFilesystem" functions in succession. A
+     * non-return value of -1 indicates the particular function has succeeded.
      */
 
     while ((retVal == NULL) && (fsRecPtr != NULL)) {
-	Tcl_FSPathInFilesystemProc *proc = fsRecPtr->fsPtr->pathInFilesystemProc;
+	Tcl_FSPathInFilesystemProc *proc =
+		fsRecPtr->fsPtr->pathInFilesystemProc;
+
 	if (proc != NULL) {
 	    ClientData clientData = NULL;
-	    int ret = (*proc)(pathObjPtr, &clientData);
-	    if (ret != -1) {
-		/* 
-		 * We assume the type of pathObjPtr hasn't been changed 
-		 * by the above call to the pathInFilesystemProc.
+	    if ((*proc)(pathPtr, &clientData) != -1) {
+		/*
+		 * We assume the type of pathPtr hasn't been changed by the
+		 * above call to the pathInFilesystemProc.
 		 */
-		TclFSSetPathDetails(pathObjPtr, fsRecPtr, clientData);
+
+		TclFSSetPathDetails(pathPtr, fsRecPtr->fsPtr, clientData);
 		retVal = fsRecPtr->fsPtr;
 	    }
 	}
 	fsRecPtr = fsRecPtr->nextPtr;
     }
+    Disclaim();
 
     return retVal;
 }
@@ -3972,26 +4431,23 @@ Tcl_FSGetFileSystemForPath(pathObjPtr)
  *
  * Tcl_FSGetNativePath --
  *
- *      This function is for use by the Win/Unix/MacOS native filesystems,
- *      so that they can easily retrieve the native (char* or TCHAR*)
- *      representation of a path.  Other filesystems will probably
- *      want to implement similar functions.  They basically act as a 
- *      safety net around Tcl_FSGetInternalRep.  Normally your file-
- *      system procedures will always be called with path objects
- *      already converted to the correct filesystem, but if for 
- *      some reason they are called directly (i.e. by procedures 
- *      not in this file), then one cannot necessarily guarantee that
- *      the path object pointer is from the correct filesystem.
- *      
- *      Note: in the future it might be desireable to have separate
- *      versions of this function with different signatures, for
- *      example Tcl_FSGetNativeMacPath, Tcl_FSGetNativeUnixPath etc.
- *      Right now, since native paths are all string based, we use just
- *      one function.  On MacOS we could possibly use an FSSpec or
- *      FSRef as the native representation.
+ *	This function is for use by the Win/Unix native filesystems, so that
+ *	they can easily retrieve the native (char* or TCHAR*) representation
+ *	of a path. Other filesystems will probably want to implement similar
+ *	functions. They basically act as a safety net around
+ *	Tcl_FSGetInternalRep. Normally your file-system functions will always
+ *	be called with path objects already converted to the correct
+ *	filesystem, but if for some reason they are called directly (i.e. by
+ *	functions not in this file), then one cannot necessarily guarantee
+ *	that the path object pointer is from the correct filesystem.
+ *
+ *	Note: in the future it might be desireable to have separate versions
+ *	of this function with different signatures, for example
+ *	Tcl_FSGetNativeWinPath, Tcl_FSGetNativeUnixPath etc. Right now, since
+ *	native paths are all string based, we use just one function.
  *
  * Results:
- *      NULL or a valid native path.
+ *	NULL or a valid native path.
  *
  * Side effects:
  *	See Tcl_FSGetInternalRep.
@@ -3999,164 +4455,11 @@ Tcl_FSGetFileSystemForPath(pathObjPtr)
  *---------------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_FSGetNativePath(pathObjPtr)
-    Tcl_Obj *pathObjPtr;
-{
-    return (CONST char *)Tcl_FSGetInternalRep(pathObjPtr, &tclNativeFilesystem);
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * NativeCreateNativeRep --
- *
- *      Create a native representation for the given path.
- *
- * Results:
- *      None.
- *
- * Side effects:
- *	None.
- *
- *---------------------------------------------------------------------------
- */
-static ClientData 
-NativeCreateNativeRep(pathObjPtr)
-    Tcl_Obj* pathObjPtr;
-{
-    char *nativePathPtr;
-    Tcl_DString ds;
-    Tcl_Obj* validPathObjPtr;
-    int len;
-    char *str;
-
-    /* Make sure the normalized path is set */
-    validPathObjPtr = Tcl_FSGetNormalizedPath(NULL, pathObjPtr);
-    if (validPathObjPtr == NULL) {
-	return NULL;
-    }
-
-    str = Tcl_GetStringFromObj(validPathObjPtr, &len);
-#ifdef __WIN32__
-    Tcl_WinUtfToTChar(str, len, &ds);
-    if (tclWinProcs->useWide) {
-	len = Tcl_DStringLength(&ds) + sizeof(WCHAR);
-    } else {
-	len = Tcl_DStringLength(&ds) + sizeof(char);
-    }
-#else
-    Tcl_UtfToExternalDString(NULL, str, len, &ds);
-    len = Tcl_DStringLength(&ds) + sizeof(char);
-#endif
-    nativePathPtr = ckalloc((unsigned) len);
-    memcpy((VOID*)nativePathPtr, (VOID*)Tcl_DStringValue(&ds), (size_t) len);
-
-    Tcl_DStringFree(&ds);
-    return (ClientData)nativePathPtr;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclpNativeToNormalized --
- *
- *      Convert native format to a normalized path object, with refCount
- *      of zero.
- *
- * Results:
- *      A valid normalized path.
- *
- * Side effects:
- *	None.
- *
- *---------------------------------------------------------------------------
- */
-Tcl_Obj* 
-TclpNativeToNormalized(clientData)
-    ClientData clientData;
-{
-    Tcl_DString ds;
-    Tcl_Obj *objPtr;
-    CONST char *copy;
-    int len;
-    
-#ifdef __WIN32__
-    Tcl_WinTCharToUtf((CONST char*)clientData, -1, &ds);
-#else
-    Tcl_ExternalToUtfDString(NULL, (CONST char*)clientData, -1, &ds);
-#endif
-    
-    copy = Tcl_DStringValue(&ds);
-    len = Tcl_DStringLength(&ds);
-
-#ifdef __WIN32__
-    /* 
-     * Certain native path representations on Windows have this special
-     * prefix to indicate that they are to be treated specially.  For
-     * example extremely long paths, or symlinks 
-     */
-    if (*copy == '\\') {
-        if (0 == strncmp(copy,"\\??\\",4)) {
-	    copy += 4;
-	    len -= 4;
-	} else if (0 == strncmp(copy,"\\\\?\\",4)) {
-	    copy += 4;
-	    len -= 4;
-	}
-    }
-#endif
-
-    objPtr = Tcl_NewStringObj(copy,len);
-    Tcl_DStringFree(&ds);
-    
-    return objPtr;
-}
-
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclNativeDupInternalRep --
- *
- *      Duplicate the native representation.
- *
- * Results:
- *      The copied native representation, or NULL if it is not possible
- *      to copy the representation.
- *
- * Side effects:
- *	None.
- *
- *---------------------------------------------------------------------------
- */
-ClientData 
-TclNativeDupInternalRep(clientData)
-    ClientData clientData;
+const char *
+Tcl_FSGetNativePath(
+    Tcl_Obj *pathPtr)
 {
-    ClientData copy;
-    size_t len;
-
-    if (clientData == NULL) {
-	return NULL;
-    }
-
-#ifdef __WIN32__
-    if (tclWinProcs->useWide) {
-	/* unicode representation when running on NT/2K/XP */
-	len = sizeof(WCHAR) + (wcslen((CONST WCHAR*)clientData) * sizeof(WCHAR));
-    } else {
-	/* ansi representation when running on 95/98/ME */
-	len = sizeof(char) + (strlen((CONST char*)clientData) * sizeof(char));
-    }
-#else
-    /* ansi representation when running on Unix/MacOS */
-    len = sizeof(char) + (strlen((CONST char*)clientData) * sizeof(char));
-#endif
-    
-    copy = (ClientData) ckalloc(len);
-    memcpy((VOID*)copy, (VOID*)clientData, len);
-    return copy;
+    return (const char *) Tcl_FSGetInternalRep(pathPtr, &tclNativeFilesystem);
 }
 
 /*
@@ -4164,21 +4467,22 @@ TclNativeDupInternalRep(clientData)
  *
  * NativeFreeInternalRep --
  *
- *      Free a native internal representation, which will be non-NULL.
+ *	Free a native internal representation, which will be non-NULL.
  *
  * Results:
- *      None.
+ *	None.
  *
  * Side effects:
  *	Memory is released.
  *
  *---------------------------------------------------------------------------
  */
-static void 
-NativeFreeInternalRep(clientData)
-    ClientData clientData;
+
+static void
+NativeFreeInternalRep(
+    ClientData clientData)
 {
-    ckfree((char*)clientData);
+    ckfree((char *) clientData);
 }
 
 /*
@@ -4186,44 +4490,42 @@ NativeFreeInternalRep(clientData)
  *
  * Tcl_FSFileSystemInfo --
  *
- *      This function returns a list of two elements.  The first
- *      element is the name of the filesystem (e.g. "native" or "vfs"),
- *      and the second is the particular type of the given path within
- *      that filesystem.
+ *	This function returns a list of two elements. The first element is the
+ *	name of the filesystem (e.g. "native" or "vfs"), and the second is the
+ *	particular type of the given path within that filesystem.
  *
  * Results:
- *      A list of two elements.
+ *	A list of two elements.
  *
  * Side effects:
  *	The object may be converted to a path type.
  *
  *---------------------------------------------------------------------------
  */
-Tcl_Obj*
-Tcl_FSFileSystemInfo(pathObjPtr)
-    Tcl_Obj* pathObjPtr;
+
+Tcl_Obj *
+Tcl_FSFileSystemInfo(
+    Tcl_Obj *pathPtr)
 {
     Tcl_Obj *resPtr;
     Tcl_FSFilesystemPathTypeProc *proc;
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathObjPtr);
-    
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+
     if (fsPtr == NULL) {
 	return NULL;
     }
-    
-    resPtr = Tcl_NewListObj(0,NULL);
-    
-    Tcl_ListObjAppendElement(NULL, resPtr, 
-			     Tcl_NewStringObj(fsPtr->typeName,-1));
+
+    resPtr = Tcl_NewListObj(0, NULL);
+    Tcl_ListObjAppendElement(NULL,resPtr,Tcl_NewStringObj(fsPtr->typeName,-1));
 
     proc = fsPtr->filesystemPathTypeProc;
     if (proc != NULL) {
-	Tcl_Obj *typePtr = (*proc)(pathObjPtr);
+	Tcl_Obj *typePtr = (*proc)(pathPtr);
 	if (typePtr != NULL) {
 	    Tcl_ListObjAppendElement(NULL, resPtr, typePtr);
 	}
     }
-    
+
     return resPtr;
 }
 
@@ -4232,33 +4534,42 @@ Tcl_FSFileSystemInfo(pathObjPtr)
  *
  * Tcl_FSPathSeparator --
  *
- *      This function returns the separator to be used for a given
- *      path.  The object returned should have a refCount of zero
+ *	This function returns the separator to be used for a given path. The
+ *	object returned should have a refCount of zero
  *
  * Results:
- *      A Tcl object, with a refCount of zero.  If the caller
- *      needs to retain a reference to the object, it should
- *      call Tcl_IncrRefCount.
+ *	A Tcl object, with a refCount of zero. If the caller needs to retain a
+ *	reference to the object, it should call Tcl_IncrRefCount, and should
+ *	otherwise free the object.
  *
  * Side effects:
  *	The path object may be converted to a path type.
  *
  *---------------------------------------------------------------------------
  */
-Tcl_Obj*
-Tcl_FSPathSeparator(pathObjPtr)
-    Tcl_Obj* pathObjPtr;
+
+Tcl_Obj *
+Tcl_FSPathSeparator(
+    Tcl_Obj *pathPtr)
 {
-    Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathObjPtr);
-    
+    const Tcl_Filesystem *fsPtr = Tcl_FSGetFileSystemForPath(pathPtr);
+
     if (fsPtr == NULL) {
 	return NULL;
     }
     if (fsPtr->filesystemSeparatorProc != NULL) {
-	return (*fsPtr->filesystemSeparatorProc)(pathObjPtr);
+	return (*fsPtr->filesystemSeparatorProc)(pathPtr);
+    } else {
+	Tcl_Obj *resultObj;
+
+	/*
+	 * Allow filesystems not to provide a filesystemSeparatorProc if they
+	 * wish to use the standard forward slash.
+	 */
+
+	TclNewLiteralStringObj(resultObj, "/");
+	return resultObj;
     }
-    
-    return NULL;
 }
 
 /*
@@ -4266,29 +4577,30 @@ Tcl_FSPathSeparator(pathObjPtr)
  *
  * NativeFilesystemSeparator --
  *
- *      This function is part of the native filesystem support, and
- *      returns the separator for the given path.
+ *	This function is part of the native filesystem support, and returns
+ *	the separator for the given path.
  *
  * Results:
- *      String object containing the separator character.
+ *	String object containing the separator character.
  *
  * Side effects:
  *	None.
  *
  *---------------------------------------------------------------------------
  */
-static Tcl_Obj*
-NativeFilesystemSeparator(pathObjPtr)
-    Tcl_Obj* pathObjPtr;
+
+static Tcl_Obj *
+NativeFilesystemSeparator(
+    Tcl_Obj *pathPtr)
 {
-    char *separator = NULL; /* lint */
+    const char *separator = NULL; /* lint */
     switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    separator = "/";
-	    break;
-	case TCL_PLATFORM_WINDOWS:
-	    separator = "\\";
-	    break;
+    case TCL_PLATFORM_UNIX:
+	separator = "/";
+	break;
+    case TCL_PLATFORM_WINDOWS:
+	separator = "\\";
+	break;
     }
     return Tcl_NewStringObj(separator,1);
 }
@@ -4301,26 +4613,25 @@ NativeFilesystemSeparator(pathObjPtr)
  *
  * TclStatInsertProc --
  *
- *	Insert the passed procedure pointer at the head of the list of
- *	functions which are used during a call to 'TclStat(...)'. The
- *	passed function should behave exactly like 'TclStat' when called
- *	during that time (see 'TclStat(...)' for more information).
- *	The function will be added even if it already in the list.
+ *	Insert the passed function pointer at the head of the list of
+ *	functions which are used during a call to 'TclStat(...)'. The passed
+ *	function should behave exactly like 'TclStat' when called during that
+ *	time (see 'TclStat(...)' for more information). The function will be
+ *	added even if it already in the list.
  *
  * Results:
- *      Normally TCL_OK; TCL_ERROR if memory for a new node in the list
- *	could not be allocated.
+ *	Normally TCL_OK; TCL_ERROR if memory for a new node in the list could
+ *	not be allocated.
  *
  * Side effects:
- *      Memory allocated and modifies the link list for 'TclStat'
- *	functions.
+ *	Memory allocated and modifies the link list for 'TclStat' functions.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclStatInsertProc (proc)
-    TclStatProc_ *proc;
+TclStatInsertProc(
+    TclStatProc_ *proc)
 {
     int retVal = TCL_ERROR;
 
@@ -4349,22 +4660,21 @@ TclStatInsertProc (proc)
  * TclStatDeleteProc --
  *
  *	Removed the passed function pointer from the list of 'TclStat'
- *	functions.  Ensures that the built-in stat function is not
- *	removvable.
+ *	functions. Ensures that the built-in stat function is not removable.
  *
  * Results:
- *      TCL_OK if the procedure pointer was successfully removed,
- *	TCL_ERROR otherwise.
+ *	TCL_OK if the function pointer was successfully removed, TCL_ERROR
+ *	otherwise.
  *
  * Side effects:
- *      Memory is deallocated and the respective list updated.
+ *	Memory is deallocated and the respective list updated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclStatDeleteProc (proc)
-    TclStatProc_ *proc;
+TclStatDeleteProc(
+    TclStatProc_ *proc)
 {
     int retVal = TCL_ERROR;
     StatProc *tmpStatProcPtr;
@@ -4372,10 +4682,11 @@ TclStatDeleteProc (proc)
 
     Tcl_MutexLock(&obsoleteFsHookMutex);
     tmpStatProcPtr = statProcList;
+
     /*
-     * Traverse the 'statProcList' looking for the particular node
-     * whose 'proc' member matches 'proc' and remove that one from
-     * the list.  Ensure that the "default" node cannot be removed.
+     * Traverse the 'statProcList' looking for the particular node whose
+     * 'proc' member matches 'proc' and remove that one from the list. Ensure
+     * that the "default" node cannot be removed.
      */
 
     while ((retVal == TCL_ERROR) && (tmpStatProcPtr != NULL)) {
@@ -4405,27 +4716,25 @@ TclStatDeleteProc (proc)
  *
  * TclAccessInsertProc --
  *
- *	Insert the passed procedure pointer at the head of the list of
- *	functions which are used during a call to 'TclAccess(...)'.
- *	The passed function should behave exactly like 'TclAccess' when
- *	called during that time (see 'TclAccess(...)' for more
- *	information).  The function will be added even if it already in
- *	the list.
+ *	Insert the passed function pointer at the head of the list of
+ *	functions which are used during a call to 'TclAccess(...)'. The passed
+ *	function should behave exactly like 'TclAccess' when called during
+ *	that time (see 'TclAccess(...)' for more information). The function
+ *	will be added even if it already in the list.
  *
  * Results:
- *      Normally TCL_OK; TCL_ERROR if memory for a new node in the list
- *	could not be allocated.
+ *	Normally TCL_OK; TCL_ERROR if memory for a new node in the list could
+ *	not be allocated.
  *
  * Side effects:
- *      Memory allocated and modifies the link list for 'TclAccess'
- *	functions.
+ *	Memory allocated and modifies the link list for 'TclAccess' functions.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclAccessInsertProc(proc)
-    TclAccessProc_ *proc;
+TclAccessInsertProc(
+    TclAccessProc_ *proc)
 {
     int retVal = TCL_ERROR;
 
@@ -4454,31 +4763,30 @@ TclAccessInsertProc(proc)
  * TclAccessDeleteProc --
  *
  *	Removed the passed function pointer from the list of 'TclAccess'
- *	functions.  Ensures that the built-in access function is not
- *	removvable.
+ *	functions. Ensures that the built-in access function is not removable.
  *
  * Results:
- *      TCL_OK if the procedure pointer was successfully removed,
- *	TCL_ERROR otherwise.
+ *	TCL_OK if the function pointer was successfully removed, TCL_ERROR
+ *	otherwise.
  *
  * Side effects:
- *      Memory is deallocated and the respective list updated.
+ *	Memory is deallocated and the respective list updated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclAccessDeleteProc(proc)
-    TclAccessProc_ *proc;
+TclAccessDeleteProc(
+    TclAccessProc_ *proc)
 {
     int retVal = TCL_ERROR;
     AccessProc *tmpAccessProcPtr;
     AccessProc *prevAccessProcPtr = NULL;
 
     /*
-     * Traverse the 'accessProcList' looking for the particular node
-     * whose 'proc' member matches 'proc' and remove that one from
-     * the list.  Ensure that the "default" node cannot be removed.
+     * Traverse the 'accessProcList' looking for the particular node whose
+     * 'proc' member matches 'proc' and remove that one from the list. Ensure
+     * that the "default" node cannot be removed.
      */
 
     Tcl_MutexLock(&obsoleteFsHookMutex);
@@ -4509,45 +4817,43 @@ TclAccessDeleteProc(proc)
  *
  * TclOpenFileChannelInsertProc --
  *
- *	Insert the passed procedure pointer at the head of the list of
- *	functions which are used during a call to
- *	'Tcl_OpenFileChannel(...)'. The passed function should behave
- *	exactly like 'Tcl_OpenFileChannel' when called during that time
- *	(see 'Tcl_OpenFileChannel(...)' for more information). The
- *	function will be added even if it already in the list.
+ *	Insert the passed function pointer at the head of the list of
+ *	functions which are used during a call to 'Tcl_OpenFileChannel(...)'.
+ *	The passed function should behave exactly like 'Tcl_OpenFileChannel'
+ *	when called during that time (see 'Tcl_OpenFileChannel(...)' for more
+ *	information). The function will be added even if it already in the
+ *	list.
  *
  * Results:
- *      Normally TCL_OK; TCL_ERROR if memory for a new node in the list
- *	could not be allocated.
+ *	Normally TCL_OK; TCL_ERROR if memory for a new node in the list could
+ *	not be allocated.
  *
  * Side effects:
- *      Memory allocated and modifies the link list for
- *	'Tcl_OpenFileChannel' functions.
+ *	Memory allocated and modifies the link list for 'Tcl_OpenFileChannel'
+ *	functions.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclOpenFileChannelInsertProc(proc)
-    TclOpenFileChannelProc_ *proc;
+TclOpenFileChannelInsertProc(
+    TclOpenFileChannelProc_ *proc)
 {
     int retVal = TCL_ERROR;
 
     if (proc != NULL) {
 	OpenFileChannelProc *newOpenFileChannelProcPtr;
 
-	newOpenFileChannelProcPtr =
-		(OpenFileChannelProc *)ckalloc(sizeof(OpenFileChannelProc));
+	newOpenFileChannelProcPtr = (OpenFileChannelProc *)
+		ckalloc(sizeof(OpenFileChannelProc));
 
-	if (newOpenFileChannelProcPtr != NULL) {
-	    newOpenFileChannelProcPtr->proc = proc;
-	    Tcl_MutexLock(&obsoleteFsHookMutex);
-	    newOpenFileChannelProcPtr->nextPtr = openFileChannelProcList;
-	    openFileChannelProcList = newOpenFileChannelProcPtr;
-	    Tcl_MutexUnlock(&obsoleteFsHookMutex);
+	newOpenFileChannelProcPtr->proc = proc;
+	Tcl_MutexLock(&obsoleteFsHookMutex);
+	newOpenFileChannelProcPtr->nextPtr = openFileChannelProcList;
+	openFileChannelProcList = newOpenFileChannelProcPtr;
+	Tcl_MutexUnlock(&obsoleteFsHookMutex);
 
-	    retVal = TCL_OK;
-	}
+	retVal = TCL_OK;
     }
 
     return retVal;
@@ -4559,31 +4865,30 @@ TclOpenFileChannelInsertProc(proc)
  * TclOpenFileChannelDeleteProc --
  *
  *	Removed the passed function pointer from the list of
- *	'Tcl_OpenFileChannel' functions.  Ensures that the built-in
- *	open file channel function is not removable.
+ *	'Tcl_OpenFileChannel' functions. Ensures that the built-in open file
+ *	channel function is not removable.
  *
  * Results:
- *      TCL_OK if the procedure pointer was successfully removed,
- *	TCL_ERROR otherwise.
+ *	TCL_OK if the function pointer was successfully removed, TCL_ERROR
+ *	otherwise.
  *
  * Side effects:
- *      Memory is deallocated and the respective list updated.
+ *	Memory is deallocated and the respective list updated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclOpenFileChannelDeleteProc(proc)
-    TclOpenFileChannelProc_ *proc;
+TclOpenFileChannelDeleteProc(
+    TclOpenFileChannelProc_ *proc)
 {
     int retVal = TCL_ERROR;
     OpenFileChannelProc *tmpOpenFileChannelProcPtr = openFileChannelProcList;
     OpenFileChannelProc *prevOpenFileChannelProcPtr = NULL;
 
     /*
-     * Traverse the 'openFileChannelProcList' looking for the particular
-     * node whose 'proc' member matches 'proc' and remove that one from
-     * the list.  
+     * Traverse the 'openFileChannelProcList' looking for the particular node
+     * whose 'proc' member matches 'proc' and remove that one from the list.
      */
 
     Tcl_MutexLock(&obsoleteFsHookMutex);
@@ -4598,7 +4903,7 @@ TclOpenFileChannelDeleteProc(proc)
 			tmpOpenFileChannelProcPtr->nextPtr;
 	    }
 
-	    ckfree((char *)tmpOpenFileChannelProcPtr);
+	    ckfree((char *) tmpOpenFileChannelProcPtr);
 
 	    retVal = TCL_OK;
 	} else {
@@ -4611,1869 +4916,11 @@ TclOpenFileChannelDeleteProc(proc)
     return retVal;
 }
 #endif /* USE_OBSOLETE_FS_HOOKS */
-
-
-/*
- * Prototypes for procedures defined later in this file.
- */
-
-static void		DupFsPathInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *copyPtr));
-static void		FreeFsPathInternalRep _ANSI_ARGS_((Tcl_Obj *listPtr));
-static void             UpdateStringOfFsPath _ANSI_ARGS_((Tcl_Obj *objPtr));
-static int		SetFsPathFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static int 		FindSplitPos _ANSI_ARGS_((char *path, char *separator));
-
-
-
-/*
- * Define the 'path' object type, which Tcl uses to represent
- * file paths internally.
- */
-static Tcl_ObjType tclFsPathType = {
-    "path",				/* name */
-    FreeFsPathInternalRep,		/* freeIntRepProc */
-    DupFsPathInternalRep,	        /* dupIntRepProc */
-    UpdateStringOfFsPath,		/* updateStringProc */
-    SetFsPathFromAny			/* setFromAnyProc */
-};
-
-/* 
- * struct FsPath --
- * 
- * Internal representation of a Tcl_Obj of "path" type.  This
- * can be used to represent relative or absolute paths, and has
- * certain optimisations when used to represent paths which are
- * already normalized and absolute.
- * 
- * Note that 'normPathPtr' can be a circular reference to the
- * container Tcl_Obj of this FsPath.
- */
-typedef struct FsPath {
-    Tcl_Obj *translatedPathPtr; /* Name without any ~user sequences.
-				 * If this is NULL, then this is a 
-				 * pure normalized, absolute path
-				 * object, in which the parent Tcl_Obj's
-				 * string rep is already both translated
-				 * and normalized. */
-    Tcl_Obj *normPathPtr;       /* Normalized absolute path, without 
-				 * ., .. or ~user sequences. If the 
-				 * Tcl_Obj containing 
-				 * this FsPath is already normalized, 
-				 * this may be a circular reference back
-				 * to the container.  If that is NOT the
-				 * case, we have a refCount on the object. */
-    Tcl_Obj *cwdPtr;            /* If null, path is absolute, else
-				 * this points to the cwd object used
-				 * for this path.  We have a refCount
-				 * on the object. */
-    int flags;                  /* Flags to describe interpretation */
-    ClientData nativePathPtr;   /* Native representation of this path,
-				 * which is filesystem dependent. */
-    int filesystemEpoch;        /* Used to ensure the path representation
-				 * was generated during the correct
-				 * filesystem epoch.  The epoch changes
-				 * when filesystem-mounts are changed. */ 
-    struct FilesystemRecord *fsRecPtr;
-				/* Pointer to the filesystem record 
-				 * entry to use for this path. */
-} FsPath;
-
-/* 
- * Define some macros to give us convenient access to path-object
- * specific fields.
- */
-#define PATHOBJ(objPtr) (objPtr->internalRep.otherValuePtr)
-#define PATHFLAGS(objPtr) \
- (((FsPath*)(objPtr->internalRep.otherValuePtr))->flags)
-
-#define TCLPATH_APPENDED 1
-#define TCLPATH_RELATIVE 2
-#define TCLPATH_NEEDNORM 4
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_FSGetPathType --
- *
- *	Determines whether a given path is relative to the current
- *	directory, relative to the current volume, or absolute.  
- *
- * Results:
- *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
- *	TCL_PATH_VOLUME_RELATIVE.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-Tcl_PathType
-Tcl_FSGetPathType(pathObjPtr)
-    Tcl_Obj *pathObjPtr;
-{
-    return FSGetPathType(pathObjPtr, NULL, NULL);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * FSGetPathType --
- *
- *	Determines whether a given path is relative to the current
- *	directory, relative to the current volume, or absolute.  If the
- *	caller wishes to know which filesystem claimed the path (in the
- *	case for which the path is absolute), then a reference to a
- *	filesystem pointer can be passed in (but passing NULL is
- *	acceptable).
- *
- * Results:
- *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
- *	TCL_PATH_VOLUME_RELATIVE.  The filesystem reference will
- *	be set if and only if it is non-NULL and the function's 
- *	return value is TCL_PATH_ABSOLUTE.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-static Tcl_PathType
-FSGetPathType(pathObjPtr, filesystemPtrPtr, driveNameLengthPtr)
-    Tcl_Obj *pathObjPtr;
-    Tcl_Filesystem **filesystemPtrPtr;
-    int *driveNameLengthPtr;
-{
-    if (Tcl_FSConvertToPathType(NULL, pathObjPtr) != TCL_OK) {
-	return GetPathType(pathObjPtr, filesystemPtrPtr, 
-			   driveNameLengthPtr, NULL);
-    } else {
-	FsPath *fsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-	if (fsPathPtr->cwdPtr != NULL) {
-	    if (PATHFLAGS(pathObjPtr) == 0) {
-		/* The path is not absolute... */
-#ifdef __WIN32__
-		/* ... on Windows we must make another call to determine
-		 * whether it's relative or volumerelative [Bug 2571597]. */
-		return GetPathType(pathObjPtr, filesystemPtrPtr, 
-			driveNameLengthPtr, NULL);
-#else
-		/* On other systems, quickly deduce !absolute -> relative */
-		return TCL_PATH_RELATIVE;
-#endif
-	    }
-	    return FSGetPathType(fsPathPtr->cwdPtr, filesystemPtrPtr, 
-				 driveNameLengthPtr);
-	} else {
-	    return GetPathType(pathObjPtr, filesystemPtrPtr, 
-			       driveNameLengthPtr, NULL);
-	}
-    }
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSJoinPath --
- *
- *      This function takes the given Tcl_Obj, which should be a valid
- *      list, and returns the path object given by considering the
- *      first 'elements' elements as valid path segments.  If elements < 0,
- *      we use the entire list.
- *      
- * Results:
- *      Returns object with refCount of zero, (or if non-zero, it has
- *      references elsewhere in Tcl).  Either way, the caller must
- *      increment its refCount before use.
- *
- * Side effects:
- *	None.
- *
- *---------------------------------------------------------------------------
- */
-Tcl_Obj* 
-Tcl_FSJoinPath(listObj, elements)
-    Tcl_Obj *listObj;
-    int elements;
-{
-    Tcl_Obj *res;
-    int i;
-    Tcl_Filesystem *fsPtr = NULL;
-    
-    if (elements < 0) {
-	if (Tcl_ListObjLength(NULL, listObj, &elements) != TCL_OK) {
-	    return NULL;
-	}
-    } else {
-	/* Just make sure it is a valid list */
-	int listTest;
-	if (Tcl_ListObjLength(NULL, listObj, &listTest) != TCL_OK) {
-	    return NULL;
-	}
-	/* 
-	 * Correct this if it is too large, otherwise we will
-	 * waste our time joining null elements to the path 
-	 */
-	if (elements > listTest) {
-	    elements = listTest;
-	}
-    }
-    
-    res = Tcl_NewObj();
-    
-    for (i = 0; i < elements; i++) {
-	Tcl_Obj *elt;
-	int driveNameLength;
-	Tcl_PathType type;
-	char *strElt;
-	int strEltLen;
-	int length;
-	char *ptr;
-	Tcl_Obj *driveName = NULL;
-	
-	Tcl_ListObjIndex(NULL, listObj, i, &elt);
-	
-	/* 
-	 * This is a special case where we can be much more
-	 * efficient, where we are joining a single relative path
-	 * onto an object that is already of path type.  The 
-	 * 'TclNewFSPathObj' call below creates an object which
-	 * can be normalized more efficiently.  Currently we only
-	 * use the special case when we have exactly two elements,
-	 * but we could expand that in the future.
-	 */
-	if ((i == (elements-2)) && (i == 0) && (elt->typePtr == &tclFsPathType)
-	  && !(elt->bytes != NULL && (elt->bytes[0] == '\0'))) {
-	    Tcl_Obj *tail;
-	    Tcl_PathType type;
-	    Tcl_ListObjIndex(NULL, listObj, i+1, &tail);
-	    type = GetPathType(tail, NULL, NULL, NULL);
-	    if (type == TCL_PATH_RELATIVE) {
-		CONST char *str;
-		int len;
-		str = Tcl_GetStringFromObj(tail,&len);
-		if (len == 0) {
-		    /* 
-		     * This happens if we try to handle the root volume
-		     * '/'.  There's no need to return a special path
-		     * object, when the base itself is just fine!
-		     */
-		    Tcl_DecrRefCount(res);
-		    return elt;
-		}
-		/* 
-		 * If it doesn't begin with '.'  and is a mac or unix
-		 * path or it a windows path without backslashes, then we
-		 * can be very efficient here.  (In fact even a windows
-		 * path with backslashes can be joined efficiently, but
-		 * the path object would not have forward slashes only,
-		 * and this would therefore contradict our 'file join'
-		 * documentation).
-		 */
-		if (str[0] != '.' && ((tclPlatform != TCL_PLATFORM_WINDOWS) 
-				      || (strchr(str, '\\') == NULL))) {
-		    /* 
-		     * Finally, on Windows, 'file join' is defined to 
-		     * convert all backslashes to forward slashes,
-		     * so the base part cannot have backslashes either.
-		     */
-		    if ((tclPlatform != TCL_PLATFORM_WINDOWS)
-			|| (strchr(Tcl_GetString(elt), '\\') == NULL)) {
-			if (res != NULL) {
-			    TclDecrRefCount(res);
-			}
-			return TclNewFSPathObj(elt, str, len);
-		    }
-		}
-		/* 
-		 * Otherwise we don't have an easy join, and
-		 * we must let the more general code below handle
-		 * things
-		 */
-	    } else {
-		if (tclPlatform == TCL_PLATFORM_UNIX) {
-		    Tcl_DecrRefCount(res);
-		    return tail;
-		} else {
-		    CONST char *str;
-		    int len;
-		    str = Tcl_GetStringFromObj(tail,&len);
-		    if (tclPlatform == TCL_PLATFORM_WINDOWS) {
-			if (strchr(str, '\\') == NULL) {
-			    Tcl_DecrRefCount(res);
-			    return tail;
-			}
-		    }
-		}
-	    }
-	}
-	strElt = Tcl_GetStringFromObj(elt, &strEltLen);
-	type = GetPathType(elt, &fsPtr, &driveNameLength, &driveName);
-	if (type != TCL_PATH_RELATIVE) {
-	    /* Zero out the current result */
-	    Tcl_DecrRefCount(res);
-	    if (driveName != NULL) {
-		res = Tcl_DuplicateObj(driveName);
-		Tcl_DecrRefCount(driveName);
-	    } else {
-		res = Tcl_NewStringObj(strElt, driveNameLength);
-	    }
-	    strElt += driveNameLength;
-	}
-	
-	ptr = Tcl_GetStringFromObj(res, &length);
-	
-	/* 
-	 * Strip off any './' before a tilde, unless this is the
-	 * beginning of the path.
-	 */
-	if (length > 0 && strEltLen > 0) {
-	    if ((strElt[0] == '.') && (strElt[1] == '/') 
-	      && (strElt[2] == '~')) {
-		strElt += 2;
-	    }
-	}
-
-	/* 
-	 * A NULL value for fsPtr at this stage basically means
-	 * we're trying to join a relative path onto something
-	 * which is also relative (or empty).  There's nothing
-	 * particularly wrong with that.
-	 */
-	if (*strElt == '\0') continue;
-	
-	if (fsPtr == &tclNativeFilesystem || fsPtr == NULL) {
-	    TclpNativeJoinPath(res, strElt);
-	} else {
-	    char separator = '/';
-	    int needsSep = 0;
-	    
-	    if (fsPtr->filesystemSeparatorProc != NULL) {
-		Tcl_Obj *sep = (*fsPtr->filesystemSeparatorProc)(res);
-		if (sep != NULL) {
-		    separator = Tcl_GetString(sep)[0];
-		}
-	    }
-
-	    if (length > 0 && ptr[length -1] != '/') {
-		Tcl_AppendToObj(res, &separator, 1);
-		Tcl_GetStringFromObj(res, &length);
-	    }
-	    Tcl_SetObjLength(res, length + (int) strlen(strElt));
-	    
-	    ptr = Tcl_GetString(res) + length;
-	    for (; *strElt != '\0'; strElt++) {
-		if (*strElt == separator) {
-		    while (strElt[1] == separator) {
-			strElt++;
-		    }
-		    if (strElt[1] != '\0') {
-			if (needsSep) {
-			    *ptr++ = separator;
-			}
-		    }
-		} else {
-		    *ptr++ = *strElt;
-		    needsSep = 1;
-		}
-	    }
-	    length = ptr - Tcl_GetString(res);
-	    Tcl_SetObjLength(res, length);
-	}
-    }
-    return res;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSConvertToPathType --
- *
- *      This function tries to convert the given Tcl_Obj to a valid
- *      Tcl path type, taking account of the fact that the cwd may
- *      have changed even if this object is already supposedly of
- *      the correct type.
- *      
- *      The filename may begin with "~" (to indicate current user's
- *      home directory) or "~<user>" (to indicate any user's home
- *      directory).
- *
- * Results:
- *      Standard Tcl error code.
- *
- * Side effects:
- *	The old representation may be freed, and new memory allocated.
- *
- *---------------------------------------------------------------------------
- */
-int 
-Tcl_FSConvertToPathType(interp, objPtr)
-    Tcl_Interp *interp;		/* Interpreter in which to store error
-				 * message (if necessary). */
-    Tcl_Obj *objPtr;		/* Object to convert to a valid, current
-				 * path type. */
-{
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
-    /* 
-     * While it is bad practice to examine an object's type directly,
-     * this is actually the best thing to do here.  The reason is that
-     * if we are converting this object to FsPath type for the first
-     * time, we don't need to worry whether the 'cwd' has changed.
-     * On the other hand, if this object is already of FsPath type,
-     * and is a relative path, we do have to worry about the cwd.
-     * If the cwd has changed, we must recompute the path.
-     */
-    if (objPtr->typePtr == &tclFsPathType) {
-	FsPath *fsPathPtr = (FsPath*) PATHOBJ(objPtr);
-	if (fsPathPtr->filesystemEpoch != tsdPtr->filesystemEpoch) {
-	    if (objPtr->bytes == NULL) {
-		UpdateStringOfFsPath(objPtr);
-	    }
-	    FreeFsPathInternalRep(objPtr);
-	    objPtr->typePtr = NULL;
-	    return Tcl_ConvertToType(interp, objPtr, &tclFsPathType);
-	}
-	return TCL_OK;
-    } else {
-	return Tcl_ConvertToType(interp, objPtr, &tclFsPathType);
-    }
-}
-
-/* 
- * Helper function for SetFsPathFromAny.  Returns position of first
- * directory delimiter in the path.
- */
-static int
-FindSplitPos(path, separator)
-    char *path;
-    char *separator;
-{
-    int count = 0;
-    switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    while (path[count] != 0) {
-		if (path[count] == *separator) {
-		    return count;
-		}
-		count++;
-	    }
-	    break;
-
-	case TCL_PLATFORM_WINDOWS:
-	    while (path[count] != 0) {
-		if (path[count] == *separator || path[count] == '\\') {
-		    return count;
-		}
-		count++;
-	    }
-	    break;
-    }
-    return count;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclNewFSPathObj --
- *
- *      Creates a path object whose string representation is 
- *      '[file join dirPtr addStrRep]', but does so in a way that
- *      allows for more efficient caching of normalized paths.
- *      
- * Assumptions:
- *      'dirPtr' must be an absolute path.  
- *      'len' may not be zero.
- *      
- * Results:
- *      The new Tcl object, with refCount zero.
- *
- * Side effects:
- *	Memory is allocated.  'dirPtr' gets an additional refCount.
- *
- *---------------------------------------------------------------------------
- */
-
-Tcl_Obj*
-TclNewFSPathObj(Tcl_Obj *dirPtr, CONST char *addStrRep, int len)
-{
-    FsPath *fsPathPtr;
-    Tcl_Obj *objPtr;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    CONST char *p;
-    int state = 0, count = 0;
-    
-    objPtr = Tcl_NewObj();
-    fsPathPtr = (FsPath*)ckalloc((unsigned)sizeof(FsPath));
-    
-    /* Setup the path */
-    fsPathPtr->translatedPathPtr = NULL;
-    fsPathPtr->normPathPtr = Tcl_NewStringObj(addStrRep, len);
-    Tcl_IncrRefCount(fsPathPtr->normPathPtr);
-    fsPathPtr->cwdPtr = dirPtr;
-    Tcl_IncrRefCount(dirPtr);
-    fsPathPtr->nativePathPtr = NULL;
-    fsPathPtr->fsRecPtr = NULL;
-    fsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-
-    PATHOBJ(objPtr) = (VOID *) fsPathPtr;
-    PATHFLAGS(objPtr) = TCLPATH_RELATIVE | TCLPATH_APPENDED;
-    objPtr->typePtr = &tclFsPathType;
-    objPtr->bytes = NULL;
-    objPtr->length = 0;
-
-    /*
-     * Look for path components made up of only "."
-     * This is overly conservative analysis to keep simple.  It may
-     * mark some things as needing more aggressive normalization
-     * that don't actually need it.  No harm done.
-     */
-    for (p = addStrRep; len > 0; p++, len--) {
-	switch (state) {
-	case 0:	/* So far only "." since last dirsep or start */
-	    switch (*p) {
-	    case '.':
-		count++;
-		break;
-	    case '/':
-	    case '\\':
-	    case ':':
-		if (count) {
-		    PATHFLAGS(objPtr) |= TCLPATH_NEEDNORM;
-		    len = 0;
-		}
-		break;
-	    default:
-		count = 0;
-		state = 1;
-	    }
-	case 1: /* Scanning for next dirsep */
-	    switch (*p) {
-	    case '/':
-	    case '\\':
-	    case ':':
-		state = 0;
-		break;
-	    }
-	}
-    }
-    if (len == 0 && count) {
-	PATHFLAGS(objPtr) |= TCLPATH_NEEDNORM;
-    }
-
-    return objPtr;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclFSMakePathRelative --
- *
- *      Only for internal use.
- *      
- *      Takes a path and a directory, where we _assume_ both path and
- *      directory are absolute, normalized and that the path lies
- *      inside the directory.  Returns a Tcl_Obj representing filename 
- *      of the path relative to the directory.
- *      
- *      In the case where the resulting path would start with a '~', we
- *      take special care to return an ordinary string.  This means to
- *      use that path (and not have it interpreted as a user name),
- *      one must prepend './'.  This may seem strange, but that is how
- *      'glob' is currently defined.
- *      
- * Results:
- *      NULL on error, otherwise a valid object, typically with
- *      refCount of zero, which it is assumed the caller will
- *      increment.
- *
- * Side effects:
- *	The old representation may be freed, and new memory allocated.
- *
- *---------------------------------------------------------------------------
- */
-
-Tcl_Obj*
-TclFSMakePathRelative(interp, objPtr, cwdPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* The object we have. */
-    Tcl_Obj *cwdPtr;		/* Make it relative to this. */
-{
-    int cwdLen, len;
-    CONST char *tempStr;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    
-    if (objPtr->typePtr == &tclFsPathType) {
-	FsPath *fsPathPtr = (FsPath*) PATHOBJ(objPtr);
-	if (PATHFLAGS(objPtr) != 0 
-		&& fsPathPtr->cwdPtr == cwdPtr) {
-	    objPtr = fsPathPtr->normPathPtr;
-	    /* Free old representation */
-	    if (objPtr->typePtr != NULL) {
-		if (objPtr->bytes == NULL) {
-		    if (objPtr->typePtr->updateStringProc == NULL) {
-			if (interp != NULL) {
-			    Tcl_ResetResult(interp);
-			    Tcl_AppendResult(interp, "can't find object",
-					     "string representation", (char *) NULL);
-			}
-			return NULL;
-		    }
-		    objPtr->typePtr->updateStringProc(objPtr);
-		}
-		if ((objPtr->typePtr->freeIntRepProc) != NULL) {
-		    (*objPtr->typePtr->freeIntRepProc)(objPtr);
-		}
-	    }
-	    /* Now objPtr is a string object */
-	    
-	    if (Tcl_GetString(objPtr)[0] == '~') {
-		/* 
-		 * If the first character of the path is a tilde,
-		 * we must just return the path as is, to agree
-		 * with the defined behaviour of 'glob'.
-		 */
-		return objPtr;
-	    }
-
-	    fsPathPtr = (FsPath*)ckalloc((unsigned)sizeof(FsPath));
-
-	    /* Circular reference, by design */
-	    fsPathPtr->translatedPathPtr = objPtr;
-	    fsPathPtr->normPathPtr = NULL;
-	    fsPathPtr->cwdPtr = cwdPtr;
-	    Tcl_IncrRefCount(cwdPtr);
-	    fsPathPtr->nativePathPtr = NULL;
-	    fsPathPtr->fsRecPtr = NULL;
-	    fsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-
-	    PATHOBJ(objPtr) = (VOID *) fsPathPtr;
-	    PATHFLAGS(objPtr) = 0;
-	    objPtr->typePtr = &tclFsPathType;
-
-	    return objPtr;
-	}
-    }
-    /* 
-     * We know the cwd is a normalised object which does
-     * not end in a directory delimiter, unless the cwd
-     * is the name of a volume, in which case it will
-     * end in a delimiter!  We handle this situation here.
-     * A better test than the '!= sep' might be to simply
-     * check if 'cwd' is a root volume.
-     * 
-     * Note that if we get this wrong, we will strip off
-     * either too much or too little below, leading to
-     * wrong answers returned by glob.
-     */
-    tempStr = Tcl_GetStringFromObj(cwdPtr, &cwdLen);
-    /* 
-     * Should we perhaps use 'Tcl_FSPathSeparator'?
-     * But then what about the Windows special case?
-     * Perhaps we should just check if cwd is a root
-     * volume.
-     */
-    switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    if (tempStr[cwdLen-1] != '/') {
-		cwdLen++;
-	    }
-	    break;
-	case TCL_PLATFORM_WINDOWS:
-	    if (tempStr[cwdLen-1] != '/' 
-		    && tempStr[cwdLen-1] != '\\') {
-		cwdLen++;
-	    }
-	    break;
-    }
-    tempStr = Tcl_GetStringFromObj(objPtr, &len);
-
-    return Tcl_NewStringObj(tempStr + cwdLen, len - cwdLen);
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclFSMakePathFromNormalized --
- *
- *      Like SetFsPathFromAny, but assumes the given object is an
- *      absolute normalized path. Only for internal use.
- *      
- * Results:
- *      Standard Tcl error code.
- *
- * Side effects:
- *	The old representation may be freed, and new memory allocated.
- *
- *---------------------------------------------------------------------------
- */
-
-int
-TclFSMakePathFromNormalized(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* The object to convert. */
-{
-    FsPath *fsPathPtr;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
-    if (objPtr->typePtr == &tclFsPathType) {
-	return TCL_OK;
-    }
-    
-    /* Free old representation */
-    if (objPtr->typePtr != NULL) {
-	if (objPtr->bytes == NULL) {
-	    if (objPtr->typePtr->updateStringProc == NULL) {
-		if (interp != NULL) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendResult(interp, "can't find object",
-				     "string representation", (char *) NULL);
-		}
-		return TCL_ERROR;
-	    }
-	    objPtr->typePtr->updateStringProc(objPtr);
-	}
-	if ((objPtr->typePtr->freeIntRepProc) != NULL) {
-	    (*objPtr->typePtr->freeIntRepProc)(objPtr);
-	}
-    }
-
-    fsPathPtr = (FsPath*)ckalloc((unsigned)sizeof(FsPath));
-    /* It's a pure normalized absolute path */
-    fsPathPtr->translatedPathPtr = NULL;
-    fsPathPtr->normPathPtr = objPtr;
-    fsPathPtr->cwdPtr = NULL;
-    fsPathPtr->nativePathPtr = NULL;
-    fsPathPtr->fsRecPtr = NULL;
-    fsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-
-    PATHOBJ(objPtr) = (VOID *) fsPathPtr;
-    PATHFLAGS(objPtr) = 0;
-    objPtr->typePtr = &tclFsPathType;
-
-    return TCL_OK;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSNewNativePath --
- *
- *      This function performs the something like that reverse of the 
- *      usual obj->path->nativerep conversions.  If some code retrieves
- *      a path in native form (from, e.g. readlink or a native dialog),
- *      and that path is to be used at the Tcl level, then calling
- *      this function is an efficient way of creating the appropriate
- *      path object type.
- *      
- *      Any memory which is allocated for 'clientData' should be retained
- *      until clientData is passed to the filesystem's freeInternalRepProc
- *      when it can be freed.  The built in platform-specific filesystems
- *      use 'ckalloc' to allocate clientData, and ckfree to free it.
- *
- * Results:
- *      NULL or a valid path object pointer, with refCount zero.
- *
- * Side effects:
- *	New memory may be allocated.
- *
- *---------------------------------------------------------------------------
- */
-
-Tcl_Obj *
-Tcl_FSNewNativePath(fromFilesystem, clientData)
-    Tcl_Filesystem* fromFilesystem;
-    ClientData clientData;
-{
-    Tcl_Obj *objPtr;
-    FsPath *fsPathPtr;
-
-    FilesystemRecord *fsFromPtr;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    
-    objPtr = TclFSInternalToNormalized(fromFilesystem, clientData, &fsFromPtr);
-    if (objPtr == NULL) {
-	return NULL;
-    }
-    
-    /* 
-     * Free old representation; shouldn't normally be any,
-     * but best to be safe. 
-     */
-    if (objPtr->typePtr != NULL) {
-	if (objPtr->bytes == NULL) {
-	    if (objPtr->typePtr->updateStringProc == NULL) {
-		return NULL;
-	    }
-	    objPtr->typePtr->updateStringProc(objPtr);
-	}
-	if ((objPtr->typePtr->freeIntRepProc) != NULL) {
-	    (*objPtr->typePtr->freeIntRepProc)(objPtr);
-	}
-    }
-    
-    fsPathPtr = (FsPath*)ckalloc((unsigned)sizeof(FsPath));
-
-    fsPathPtr->translatedPathPtr = NULL;
-    /* Circular reference, by design */
-    fsPathPtr->normPathPtr = objPtr;
-    fsPathPtr->cwdPtr = NULL;
-    fsPathPtr->nativePathPtr = clientData;
-    fsPathPtr->fsRecPtr = fsFromPtr;
-    fsPathPtr->fsRecPtr->fileRefCount++;
-    fsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-
-    PATHOBJ(objPtr) = (VOID *) fsPathPtr;
-    PATHFLAGS(objPtr) = 0;
-    objPtr->typePtr = &tclFsPathType;
-
-    return objPtr;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSGetTranslatedPath --
- *
- *      This function attempts to extract the translated path
- *      from the given Tcl_Obj.  If the translation succeeds (i.e. the
- *      object is a valid path), then it is returned.  Otherwise NULL
- *      will be returned, and an error message may be left in the
- *      interpreter (if it is non-NULL)
- *
- * Results:
- *      NULL or a valid Tcl_Obj pointer.
- *
- * Side effects:
- *	Only those of 'Tcl_FSConvertToPathType'
- *
- *---------------------------------------------------------------------------
- */
-
-Tcl_Obj* 
-Tcl_FSGetTranslatedPath(interp, pathPtr)
-    Tcl_Interp *interp;
-    Tcl_Obj* pathPtr;
-{
-    Tcl_Obj *retObj = NULL;
-    FsPath *srcFsPathPtr;
-
-    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
-	return NULL;
-    }
-    srcFsPathPtr = (FsPath*) PATHOBJ(pathPtr);
-    if (srcFsPathPtr->translatedPathPtr == NULL) {
-	if (PATHFLAGS(pathPtr) != 0) {
-	    /*
-	     * We lack a translated path result, but we have a directory
-	     * (cwdPtr) and a tail (normPathPtr), and if we join the
-	     * translated version of cwdPtr to normPathPtr, we'll get the
-	     * translated result we need, and can store it for future use.
-	     */
-
-	    Tcl_Obj *translatedCwdPtr = Tcl_FSGetTranslatedPath(interp,
-		    srcFsPathPtr->cwdPtr);
-
-	    retObj = Tcl_FSJoinToPath(translatedCwdPtr, 1,
-		    &(srcFsPathPtr->normPathPtr));
-	    srcFsPathPtr->translatedPathPtr = retObj;
-	    Tcl_IncrRefCount(retObj);
-	    Tcl_DecrRefCount(translatedCwdPtr);
-	} else {
-	    /* 
-	     * It is a pure absolute, normalized path object.
-	     * This is something like being a 'pure list'.  The
-	     * object's string, translatedPath and normalizedPath
-	     * are all identical.
-	     */
-	    retObj = srcFsPathPtr->normPathPtr;
-	}
-    } else {
-	/* It is an ordinary path object */
-	retObj = srcFsPathPtr->translatedPathPtr;
-    }
-
-    if (retObj) {
-	Tcl_IncrRefCount(retObj);
-    }
-    return retObj;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSGetTranslatedStringPath --
- *
- *      This function attempts to extract the translated path
- *      from the given Tcl_Obj.  If the translation succeeds (i.e. the
- *      object is a valid path), then the path is returned.  Otherwise NULL
- *      will be returned, and an error message may be left in the
- *      interpreter (if it is non-NULL)
- *
- * Results:
- *      NULL or a valid string.
- *
- * Side effects:
- *	Only those of 'Tcl_FSConvertToPathType'
- *
- *---------------------------------------------------------------------------
- */
-CONST char*
-Tcl_FSGetTranslatedStringPath(interp, pathPtr)
-    Tcl_Interp *interp;
-    Tcl_Obj* pathPtr;
-{
-    Tcl_Obj *transPtr = Tcl_FSGetTranslatedPath(interp, pathPtr);
-
-    if (transPtr != NULL) {
-	int len;
-	CONST char *result, *orig;
-	orig = Tcl_GetStringFromObj(transPtr, &len);
-	result = (char*) ckalloc((unsigned)(len+1));
-	memcpy((VOID*) result, (VOID*) orig, (size_t) (len+1));
-	Tcl_DecrRefCount(transPtr);
-	return result;
-    }
-
-    return NULL;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSGetNormalizedPath --
- *
- *      This important function attempts to extract from the given Tcl_Obj
- *      a unique normalised path representation, whose string value can
- *      be used as a unique identifier for the file.
- *
- * Results:
- *      NULL or a valid path object pointer.
- *
- * Side effects:
- *	New memory may be allocated.  The Tcl 'errno' may be modified
- *      in the process of trying to examine various path possibilities.
- *
- *---------------------------------------------------------------------------
- */
-
-Tcl_Obj* 
-Tcl_FSGetNormalizedPath(interp, pathObjPtr)
-    Tcl_Interp *interp;
-    Tcl_Obj* pathObjPtr;
-{
-    FsPath *fsPathPtr;
-
-    if (Tcl_FSConvertToPathType(interp, pathObjPtr) != TCL_OK) {
-	return NULL;
-    }
-    fsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-
-    if (PATHFLAGS(pathObjPtr) != 0) {
-	/* 
-	 * This is a special path object which is the result of
-	 * something like 'file join' 
-	 */
-	Tcl_Obj *dir, *copy;
-	int cwdLen;
-	int pathType;
-	CONST char *cwdStr;
-	
-	pathType = Tcl_FSGetPathType(fsPathPtr->cwdPtr);
-	dir = Tcl_FSGetNormalizedPath(interp, fsPathPtr->cwdPtr);
-	if (dir == NULL) {
-	    return NULL;
-	}
-	if (pathObjPtr->bytes == NULL) {
-	    UpdateStringOfFsPath(pathObjPtr);
-	}
-	copy = Tcl_DuplicateObj(dir);
-	Tcl_IncrRefCount(copy);
-	Tcl_IncrRefCount(dir);
-	/* We now own a reference on both 'dir' and 'copy' */
-	
-	cwdStr = Tcl_GetStringFromObj(copy, &cwdLen);
-	/* 
-	 * Should we perhaps use 'Tcl_FSPathSeparator'?
-	 * But then what about the Windows special case?
-	 * Perhaps we should just check if cwd is a root volume.
-	 * We should never get cwdLen == 0 in this code path.
-	 */
-	switch (tclPlatform) {
-	    case TCL_PLATFORM_UNIX:
-		if (cwdStr[cwdLen-1] != '/') {
-		    Tcl_AppendToObj(copy, "/", 1);
-		    cwdLen++;
-		}
-		break;
-	    case TCL_PLATFORM_WINDOWS:
-		if (cwdStr[cwdLen-1] != '/' 
-			&& cwdStr[cwdLen-1] != '\\') {
-		    Tcl_AppendToObj(copy, "/", 1);
-		    cwdLen++;
-		}
-		break;
-	}
-	Tcl_AppendObjToObj(copy, fsPathPtr->normPathPtr);
-
-	/* Normalize the combined string. */
-
-	if (PATHFLAGS(pathObjPtr) & TCLPATH_NEEDNORM) {
-	    /*
-	     * If the "tail" part has components (like /../) that cause
-	     * the combined path to need more complete normalizing,
-	     * call on the more powerful routine to accomplish that so
-	     * we avoid [Bug 2385549] ...
-	     */
-
-	    Tcl_Obj *newCopy = TclFSNormalizeAbsolutePath(interp, copy);
-	    Tcl_DecrRefCount(copy);
-	    copy = newCopy;
-	} else {
-	    /*
-	     * ... but in most cases where we join a trouble free tail
-	     * to a normalized head, we can more efficiently normalize the
-	     * combined path by passing over only the unnormalized tail
-	     * portion.  When this is sufficient, prior developers claim
-	     * this should be much faster.  We use 'cwdLen-1' so that we are
-	     * already pointing at the dir-separator that we know about.
-	     * The normalization code will actually start off directly
-	     * after that separator.
-	     */
-
-	    TclFSNormalizeToUniquePath(interp, copy, cwdLen-1);
-	}
-
-	/* Now we need to construct the new path object */
-	
-	if (pathType == TCL_PATH_RELATIVE) {
-	    FsPath* origDirFsPathPtr;
-	    Tcl_Obj *origDir = fsPathPtr->cwdPtr;
-	    origDirFsPathPtr = (FsPath*) PATHOBJ(origDir);
-	    
-	    fsPathPtr->cwdPtr = origDirFsPathPtr->cwdPtr;
-	    Tcl_IncrRefCount(fsPathPtr->cwdPtr);
-	    
-	    Tcl_DecrRefCount(fsPathPtr->normPathPtr);
-	    fsPathPtr->normPathPtr = copy;
-	    /* That's our reference to copy used */
-	    Tcl_DecrRefCount(dir);
-	    Tcl_DecrRefCount(origDir);
-	} else {
-	    Tcl_DecrRefCount(fsPathPtr->cwdPtr);
-	    fsPathPtr->cwdPtr = NULL;
-	    Tcl_DecrRefCount(fsPathPtr->normPathPtr);
-	    fsPathPtr->normPathPtr = copy;
-	    /* That's our reference to copy used */
-	    Tcl_DecrRefCount(dir);
-	}
-	PATHFLAGS(pathObjPtr) = 0;
-    }
-    /* Ensure cwd hasn't changed */
-    if (fsPathPtr->cwdPtr != NULL) {
-	if (!TclFSCwdPointerEquals(fsPathPtr->cwdPtr)) {
-	    if (pathObjPtr->bytes == NULL) {
-		UpdateStringOfFsPath(pathObjPtr);
-	    }
-	    FreeFsPathInternalRep(pathObjPtr);
-	    pathObjPtr->typePtr = NULL;
-	    if (Tcl_ConvertToType(interp, pathObjPtr, 
-				  &tclFsPathType) != TCL_OK) {
-		return NULL;
-	    }
-	    fsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-	} else if (fsPathPtr->normPathPtr == NULL) {
-	    int cwdLen;
-	    Tcl_Obj *copy;
-	    CONST char *cwdStr;
-	    
-	    copy = Tcl_DuplicateObj(fsPathPtr->cwdPtr);
-	    Tcl_IncrRefCount(copy);
-	    cwdStr = Tcl_GetStringFromObj(copy, &cwdLen);
-	    /* 
-	     * Should we perhaps use 'Tcl_FSPathSeparator'?
-	     * But then what about the Windows special case?
-	     * Perhaps we should just check if cwd is a root volume.
-	     * We should never get cwdLen == 0 in this code path.
-	     */
-	    switch (tclPlatform) {
-		case TCL_PLATFORM_UNIX:
-		    if (cwdStr[cwdLen-1] != '/') {
-			Tcl_AppendToObj(copy, "/", 1);
-			cwdLen++;
-		    }
-		    break;
-		case TCL_PLATFORM_WINDOWS:
-		    if (cwdStr[cwdLen-1] != '/' 
-			    && cwdStr[cwdLen-1] != '\\') {
-			Tcl_AppendToObj(copy, "/", 1);
-			cwdLen++;
-		    }
-		    break;
-	    }
-	    Tcl_AppendObjToObj(copy, pathObjPtr);
-	    /* 
-	     * Normalize the combined string, but only starting after
-	     * the end of the previously normalized 'dir'.  This should
-	     * be much faster!
-	     */
-	    TclFSNormalizeToUniquePath(interp, copy, cwdLen-1);
-	    fsPathPtr->normPathPtr = copy;
-	}
-    }
-    if (fsPathPtr->normPathPtr == NULL) {
-	Tcl_Obj *useThisCwd = NULL;
-	/* 
-	 * Since normPathPtr is NULL, but this is a valid path
-	 * object, we know that the translatedPathPtr cannot be NULL.
-	 */
-	Tcl_Obj *absolutePath = fsPathPtr->translatedPathPtr;
-	char *path = Tcl_GetString(absolutePath);
-	
-	/* 
-	 * We have to be a little bit careful here to avoid infinite loops
-	 * we're asking Tcl_FSGetPathType to return the path's type, but
-	 * that call can actually result in a lot of other filesystem
-	 * action, which might loop back through here.
-	 */
-	if (path[0] != '\0') {
-	    Tcl_PathType type = Tcl_FSGetPathType(pathObjPtr);
-	    if (type == TCL_PATH_RELATIVE) {
-		useThisCwd = Tcl_FSGetCwd(interp);
-
-		if (useThisCwd == NULL) return NULL;
-
-		absolutePath = Tcl_FSJoinToPath(useThisCwd, 1, &absolutePath);
-		Tcl_IncrRefCount(absolutePath);
-		/* We have a refCount on the cwd */
-#ifdef __WIN32__
-	    } else if (type == TCL_PATH_VOLUME_RELATIVE) {
-		/* 
-		 * Only Windows has volume-relative paths.  These
-		 * paths are rather rare, but is is nice if Tcl can
-		 * handle them.  It is much better if we can
-		 * handle them here, rather than in the native fs code,
-		 * because we really need to have a real absolute path
-		 * just below.
-		 * 
-		 * We do not let this block compile on non-Windows
-		 * platforms because the test suite's manual forcing
-		 * of tclPlatform can otherwise cause this code path
-		 * to be executed, causing various errors because
-		 * volume-relative paths really do not exist.
-		 */
-		useThisCwd = Tcl_FSGetCwd(interp);
-		if (useThisCwd == NULL) return NULL;
-		
-		if (path[0] == '/') {
-		    /* 
-		     * Path of form /foo/bar which is a path in the
-		     * root directory of the current volume.
-		     */
-		    CONST char *drive = Tcl_GetString(useThisCwd);
-		    absolutePath = Tcl_NewStringObj(drive,2);
-		    Tcl_AppendToObj(absolutePath, path, -1);
-		    Tcl_IncrRefCount(absolutePath);
-		    /* We have a refCount on the cwd */
-		} else {
-		    /* 
-		     * Path of form C:foo/bar, but this only makes
-		     * sense if the cwd is also on drive C.
-		     */
-		    CONST char *drive = Tcl_GetString(useThisCwd);
-		    char drive_c = path[0];
-		    if (drive_c >= 'a') {
-			drive_c -= ('a' - 'A');
-		    }
-		    if (drive[0] == drive_c) {
-			absolutePath = Tcl_DuplicateObj(useThisCwd);
-			/* We have a refCount on the cwd */
-		    } else {
-			Tcl_DecrRefCount(useThisCwd);
-			useThisCwd = NULL;
-			/* 
-			 * The path is not in the current drive, but
-			 * is volume-relative.  The way Tcl 8.3 handles
-			 * this is that it treats such a path as
-			 * relative to the root of the drive.  We
-			 * therefore behave the same here.
-			 */
-			absolutePath = Tcl_NewStringObj(path, 2);
-		    }
-		    Tcl_IncrRefCount(absolutePath);
-		    Tcl_AppendToObj(absolutePath, "/", 1);
-		    Tcl_AppendToObj(absolutePath, path+2, -1);
-		}
-#endif /* __WIN32__ */
-	    }
-	}
-	/* Already has refCount incremented */
-	fsPathPtr->normPathPtr
-		= TclFSNormalizeAbsolutePath(interp, absolutePath);
-	if (!strcmp(Tcl_GetString(fsPathPtr->normPathPtr),
-		    Tcl_GetString(pathObjPtr))) {
-	    /* 
-	     * The path was already normalized.  
-	     * Get rid of the duplicate.
-	     */
-	    Tcl_DecrRefCount(fsPathPtr->normPathPtr);
-	    /* 
-	     * We do *not* increment the refCount for 
-	     * this circular reference 
-	     */
-	    fsPathPtr->normPathPtr = pathObjPtr;
-	}
-	if (useThisCwd != NULL) {
-	    /* This was returned by Tcl_FSJoinToPath above */
-	    Tcl_DecrRefCount(absolutePath);
-	    fsPathPtr->cwdPtr = useThisCwd;
-	}
-    }
-
-    return fsPathPtr->normPathPtr;
-}
 
 /*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSGetInternalRep --
- *
- *      Extract the internal representation of a given path object,
- *      in the given filesystem.  If the path object belongs to a
- *      different filesystem, we return NULL.
- *      
- *      If the internal representation is currently NULL, we attempt
- *      to generate it, by calling the filesystem's 
- *      'Tcl_FSCreateInternalRepProc'.
- *
- * Results:
- *      NULL or a valid internal representation.
- *
- * Side effects:
- *	An attempt may be made to convert the object.
- *
- *---------------------------------------------------------------------------
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
  */
-
-ClientData 
-Tcl_FSGetInternalRep(pathObjPtr, fsPtr)
-    Tcl_Obj* pathObjPtr;
-    Tcl_Filesystem *fsPtr;
-{
-    FsPath *srcFsPathPtr;
-    
-    if (Tcl_FSConvertToPathType(NULL, pathObjPtr) != TCL_OK) {
-	return NULL;
-    }
-    srcFsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-    
-    /* 
-     * We will only return the native representation for the caller's
-     * filesystem.  Otherwise we will simply return NULL. This means
-     * that there must be a unique bi-directional mapping between paths
-     * and filesystems, and that this mapping will not allow 'remapped'
-     * files -- files which are in one filesystem but mapped into
-     * another.  Another way of putting this is that 'stacked'
-     * filesystems are not allowed.  We recognise that this is a
-     * potentially useful feature for the future.
-     * 
-     * Even something simple like a 'pass through' filesystem which
-     * logs all activity and passes the calls onto the native system
-     * would be nice, but not easily achievable with the current
-     * implementation.
-     */
-    if (srcFsPathPtr->fsRecPtr == NULL) {
-	/* 
-	 * This only usually happens in wrappers like TclpStat which
-	 * create a string object and pass it to TclpObjStat.  Code
-	 * which calls the Tcl_FS..  functions should always have a
-	 * filesystem already set.  Whether this code path is legal or
-	 * not depends on whether we decide to allow external code to
-	 * call the native filesystem directly.  It is at least safer
-	 * to allow this sub-optimal routing.
-	 */
-	Tcl_FSGetFileSystemForPath(pathObjPtr);
-	
-	/* 
-	 * If we fail through here, then the path is probably not a
-	 * valid path in the filesystsem, and is most likely to be a
-	 * use of the empty path "" via a direct call to one of the
-	 * objectified interfaces (e.g. from the Tcl testsuite).
-	 */
-	srcFsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-	if (srcFsPathPtr->fsRecPtr == NULL) {
-	    return NULL;
-	}
-    }
-
-    if (fsPtr != srcFsPathPtr->fsRecPtr->fsPtr) {
-	/* 
-	 * There is still one possibility we should consider; if the
-	 * file belongs to a different filesystem, perhaps it is
-	 * actually linked through to a file in our own filesystem
-	 * which we do care about.  The way we can check for this
-	 * is we ask what filesystem this path belongs to.
-	 */
-	Tcl_Filesystem *actualFs = Tcl_FSGetFileSystemForPath(pathObjPtr);
-	if (actualFs == fsPtr) {
-	    return Tcl_FSGetInternalRep(pathObjPtr, fsPtr);
-	}
-	return NULL;
-    }
-
-    if (srcFsPathPtr->nativePathPtr == NULL) {
-	Tcl_FSCreateInternalRepProc *proc;
-	char *nativePathPtr;
-
-	proc = srcFsPathPtr->fsRecPtr->fsPtr->createInternalRepProc;
-	if (proc == NULL) {
-	    return NULL;
-	}
-
-	nativePathPtr = (*proc)(pathObjPtr);
-	srcFsPathPtr  = (FsPath*) PATHOBJ(pathObjPtr);
-	srcFsPathPtr->nativePathPtr = nativePathPtr;
-    }
-
-    return srcFsPathPtr->nativePathPtr;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * TclFSEnsureEpochOk --
- *
- *      This will ensure the pathObjPtr is up to date and can be
- *      converted into a "path" type, and that we are able to generate a
- *      complete normalized path which is used to determine the
- *      filesystem match.
- *
- * Results:
- *      Standard Tcl return code.
- *
- * Side effects:
- *	An attempt may be made to convert the object.
- *
- *---------------------------------------------------------------------------
- */
-
-int 
-TclFSEnsureEpochOk(pathObjPtr, fsPtrPtr)
-    Tcl_Obj* pathObjPtr;
-    Tcl_Filesystem **fsPtrPtr;
-{
-    FsPath *srcFsPathPtr;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-
-    /* 
-     * SHOULD BE ABLE TO IMPROVE EFFICIENCY HERE.
-     */
-
-    if (Tcl_FSGetNormalizedPath(NULL, pathObjPtr) == NULL) {
-	return TCL_ERROR;
-    }
-
-    srcFsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-
-    /* 
-     * Check if the filesystem has changed in some way since
-     * this object's internal representation was calculated.
-     */
-    if (srcFsPathPtr->filesystemEpoch != tsdPtr->filesystemEpoch) {
-	/* 
-	 * We have to discard the stale representation and 
-	 * recalculate it 
-	 */
-	if (pathObjPtr->bytes == NULL) {
-	    UpdateStringOfFsPath(pathObjPtr);
-	}
-	FreeFsPathInternalRep(pathObjPtr);
-	pathObjPtr->typePtr = NULL;
-	if (SetFsPathFromAny(NULL, pathObjPtr) != TCL_OK) {
-	    return TCL_ERROR;
-	}
-	srcFsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-    }
-    /* Check whether the object is already assigned to a fs */
-    if (srcFsPathPtr->fsRecPtr != NULL) {
-	*fsPtrPtr = srcFsPathPtr->fsRecPtr->fsPtr;
-    }
-
-    return TCL_OK;
-}
-
-void 
-TclFSSetPathDetails(pathObjPtr, fsRecPtr, clientData) 
-    Tcl_Obj *pathObjPtr;
-    FilesystemRecord *fsRecPtr;
-    ClientData clientData;
-{
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    /* We assume pathObjPtr is already of the correct type */
-    FsPath *srcFsPathPtr;
-    
-    srcFsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-    srcFsPathPtr->fsRecPtr = fsRecPtr;
-    srcFsPathPtr->nativePathPtr = clientData;
-    srcFsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-    fsRecPtr->fileRefCount++;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * Tcl_FSEqualPaths --
- *
- *      This function tests whether the two paths given are equal path
- *      objects.  If either or both is NULL, 0 is always returned.
- *
- * Results:
- *      1 or 0.
- *
- * Side effects:
- *	None.
- *
- *---------------------------------------------------------------------------
- */
-
-int 
-Tcl_FSEqualPaths(firstPtr, secondPtr)
-    Tcl_Obj* firstPtr;
-    Tcl_Obj* secondPtr;
-{
-    if (firstPtr == secondPtr) {
-	return 1;
-    } else {
-	char *firstStr, *secondStr;
-	int firstLen, secondLen, tempErrno;
-
-	if (firstPtr == NULL || secondPtr == NULL) {
-	    return 0;
-	}
-	firstStr  = Tcl_GetStringFromObj(firstPtr, &firstLen);
-	secondStr = Tcl_GetStringFromObj(secondPtr, &secondLen);
-	if ((firstLen == secondLen) && (strcmp(firstStr, secondStr) == 0)) {
-	    return 1;
-	}
-	/* 
-	 * Try the most thorough, correct method of comparing fully
-	 * normalized paths
-	 */
-
-	tempErrno = Tcl_GetErrno();
-	firstPtr = Tcl_FSGetNormalizedPath(NULL, firstPtr);
-	secondPtr = Tcl_FSGetNormalizedPath(NULL, secondPtr);
-	Tcl_SetErrno(tempErrno);
-
-	if (firstPtr == NULL || secondPtr == NULL) {
-	    return 0;
-	}
-	firstStr  = Tcl_GetStringFromObj(firstPtr, &firstLen);
-	secondStr = Tcl_GetStringFromObj(secondPtr, &secondLen);
-	if ((firstLen == secondLen) && (strcmp(firstStr, secondStr) == 0)) {
-	    return 1;
-	}
-    }
-
-    return 0;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * SetFsPathFromAny --
- *
- *      This function tries to convert the given Tcl_Obj to a valid
- *      Tcl path type.
- *      
- *      The filename may begin with "~" (to indicate current user's
- *      home directory) or "~<user>" (to indicate any user's home
- *      directory).
- *
- * Results:
- *      Standard Tcl error code.
- *
- * Side effects:
- *	The old representation may be freed, and new memory allocated.
- *
- *---------------------------------------------------------------------------
- */
-
-static int
-SetFsPathFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* The object to convert. */
-{
-    int len;
-    FsPath *fsPathPtr;
-    Tcl_Obj *transPtr;
-    char *name;
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
-    
-    if (objPtr->typePtr == &tclFsPathType) {
-	return TCL_OK;
-    }
-    
-    /* 
-     * First step is to translate the filename.  This is similar to
-     * Tcl_TranslateFilename, but shouldn't convert everything to
-     * windows backslashes on that platform.  The current
-     * implementation of this piece is a slightly optimised version
-     * of the various Tilde/Split/Join stuff to avoid multiple
-     * split/join operations.
-     * 
-     * We remove any trailing directory separator.
-     * 
-     * However, the split/join routines are quite complex, and
-     * one has to make sure not to break anything on Unix, Win
-     * or MacOS (fCmd.test, fileName.test and cmdAH.test exercise
-     * most of the code).
-     */
-    name = Tcl_GetStringFromObj(objPtr,&len);
-
-    /*
-     * Handle tilde substitutions, if needed.
-     */
-    if (name[0] == '~') {
-	char *expandedUser;
-	Tcl_DString temp;
-	int split;
-	char separator='/';
-	
-	split = FindSplitPos(name, &separator);
-	if (split != len) {
-	    /* We have multiple pieces '~user/foo/bar...' */
-	    name[split] = '\0';
-	}
-	/* Do some tilde substitution */
-	if (name[1] == '\0') {
-	    /* We have just '~' */
-	    CONST char *dir;
-	    Tcl_DString dirString;
-	    if (split != len) { name[split] = separator; }
-	    
-	    dir = TclGetEnv("HOME", &dirString);
-	    if (dir == NULL) {
-		if (interp) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendResult(interp, "couldn't find HOME environment ",
-			    "variable to expand path", (char *) NULL);
-		}
-		return TCL_ERROR;
-	    }
-	    Tcl_DStringInit(&temp);
-	    Tcl_JoinPath(1, &dir, &temp);
-	    Tcl_DStringFree(&dirString);
-	} else {
-	    /* We have a user name '~user' */
-	    Tcl_DStringInit(&temp);
-	    if (TclpGetUserHome(name+1, &temp) == NULL) {	
-		if (interp != NULL) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendResult(interp, "user \"", (name+1), 
-				     "\" doesn't exist", (char *) NULL);
-		}
-		Tcl_DStringFree(&temp);
-		if (split != len) { name[split] = separator; }
-		return TCL_ERROR;
-	    }
-	    if (split != len) { name[split] = separator; }
-	}
-	
-	expandedUser = Tcl_DStringValue(&temp);
-	transPtr = Tcl_NewStringObj(expandedUser, Tcl_DStringLength(&temp));
-
-	if (split != len) {
-	    /* Join up the tilde substitution with the rest */
-	    if (name[split+1] == separator) {
-
-		/*
-		 * Somewhat tricky case like ~//foo/bar.
-		 * Make use of Split/Join machinery to get it right.
-		 * Assumes all paths beginning with ~ are part of the
-		 * native filesystem.
-		 */
-
-		int objc;
-		Tcl_Obj **objv;
-		Tcl_Obj *parts = TclpNativeSplitPath(objPtr, NULL);
-		Tcl_ListObjGetElements(NULL, parts, &objc, &objv);
-		/* Skip '~'.  It's replaced by its expansion */
-		objc--; objv++;
-		while (objc--) {
-		    TclpNativeJoinPath(transPtr, Tcl_GetString(*objv++));
-		}
-		Tcl_DecrRefCount(parts);
-	    } else {
-		/* Simple case. "rest" is relative path.  Just join it. */
-		Tcl_Obj *rest = Tcl_NewStringObj(name+split+1,-1);
-		transPtr = Tcl_FSJoinToPath(transPtr, 1, &rest);
-	    }
-	}
-	Tcl_DStringFree(&temp);
-    } else {
-	transPtr = Tcl_FSJoinToPath(objPtr,0,NULL);
-    }
-
-    /* 
-     * Now we have a translated filename in 'transPtr'.  This will have
-     * forward slashes on Windows, and will not contain any ~user
-     * sequences.
-     */
-    
-    fsPathPtr = (FsPath*)ckalloc((unsigned)sizeof(FsPath));
-
-    fsPathPtr->translatedPathPtr = transPtr;
-    Tcl_IncrRefCount(fsPathPtr->translatedPathPtr);
-    fsPathPtr->normPathPtr = NULL;
-    fsPathPtr->cwdPtr = NULL;
-    fsPathPtr->nativePathPtr = NULL;
-    fsPathPtr->fsRecPtr = NULL;
-    fsPathPtr->filesystemEpoch = tsdPtr->filesystemEpoch;
-
-    /*
-     * Free old representation before installing our new one.
-     */
-    if (objPtr->typePtr != NULL && objPtr->typePtr->freeIntRepProc != NULL) {
-	(objPtr->typePtr->freeIntRepProc)(objPtr);
-    }
-    PATHOBJ(objPtr) = (VOID *) fsPathPtr;
-    PATHFLAGS(objPtr) = 0;
-    objPtr->typePtr = &tclFsPathType;
-
-    return TCL_OK;
-}
-
-static void
-FreeFsPathInternalRep(pathObjPtr)
-    Tcl_Obj *pathObjPtr;	/* Path object with internal rep to free. */
-{
-    FsPath *fsPathPtr = (FsPath*) PATHOBJ(pathObjPtr);
-
-    if (fsPathPtr->translatedPathPtr != NULL) {
-	if (fsPathPtr->translatedPathPtr != pathObjPtr) {
-	    Tcl_DecrRefCount(fsPathPtr->translatedPathPtr);
-	}
-    }
-    if (fsPathPtr->normPathPtr != NULL) {
-	if (fsPathPtr->normPathPtr != pathObjPtr) {
-	    Tcl_DecrRefCount(fsPathPtr->normPathPtr);
-	}
-	fsPathPtr->normPathPtr = NULL;
-    }
-    if (fsPathPtr->cwdPtr != NULL) {
-	Tcl_DecrRefCount(fsPathPtr->cwdPtr);
-    }
-    if (fsPathPtr->nativePathPtr != NULL) {
-	if (fsPathPtr->fsRecPtr != NULL) {
-	    if (fsPathPtr->fsRecPtr->fsPtr->freeInternalRepProc != NULL) {
-		(*fsPathPtr->fsRecPtr->fsPtr
-		   ->freeInternalRepProc)(fsPathPtr->nativePathPtr);
-		fsPathPtr->nativePathPtr = NULL;
-	    }
-	}
-    }
-    if (fsPathPtr->fsRecPtr != NULL) {
-	fsPathPtr->fsRecPtr->fileRefCount--;
-	if (fsPathPtr->fsRecPtr->fileRefCount <= 0) {
-	    /* It has been unregistered already, so simply free it */
-	    ckfree((char *)fsPathPtr->fsRecPtr);
-	}
-    }
-
-    ckfree((char*) fsPathPtr);
-}
-
-
-static void
-DupFsPathInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;		/* Path obj with internal rep to copy. */
-    Tcl_Obj *copyPtr;		/* Path obj with internal rep to set. */
-{
-    FsPath *srcFsPathPtr = (FsPath*) PATHOBJ(srcPtr);
-    FsPath *copyFsPathPtr = (FsPath*) ckalloc((unsigned)sizeof(FsPath));
-      
-    Tcl_FSDupInternalRepProc *dupProc;
-    
-    PATHOBJ(copyPtr) = (VOID *) copyFsPathPtr;
-
-    if (srcFsPathPtr->translatedPathPtr != NULL) {
-	copyFsPathPtr->translatedPathPtr = srcFsPathPtr->translatedPathPtr;
-	if (copyFsPathPtr->translatedPathPtr != copyPtr) {
-	    Tcl_IncrRefCount(copyFsPathPtr->translatedPathPtr);
-	}
-    } else {
-	copyFsPathPtr->translatedPathPtr = NULL;
-    }
-    
-    if (srcFsPathPtr->normPathPtr != NULL) {
-	copyFsPathPtr->normPathPtr = srcFsPathPtr->normPathPtr;
-	if (copyFsPathPtr->normPathPtr != copyPtr) {
-	    Tcl_IncrRefCount(copyFsPathPtr->normPathPtr);
-	}
-    } else {
-	copyFsPathPtr->normPathPtr = NULL;
-    }
-    
-    if (srcFsPathPtr->cwdPtr != NULL) {
-	copyFsPathPtr->cwdPtr = srcFsPathPtr->cwdPtr;
-	Tcl_IncrRefCount(copyFsPathPtr->cwdPtr);
-    } else {
-	copyFsPathPtr->cwdPtr = NULL;
-    }
-
-    copyFsPathPtr->flags = srcFsPathPtr->flags;
-    
-    if (srcFsPathPtr->fsRecPtr != NULL 
-      && srcFsPathPtr->nativePathPtr != NULL) {
-	dupProc = srcFsPathPtr->fsRecPtr->fsPtr->dupInternalRepProc;
-	if (dupProc != NULL) {
-	    copyFsPathPtr->nativePathPtr = 
-	      (*dupProc)(srcFsPathPtr->nativePathPtr);
-	} else {
-	    copyFsPathPtr->nativePathPtr = NULL;
-	}
-    } else {
-	copyFsPathPtr->nativePathPtr = NULL;
-    }
-    copyFsPathPtr->fsRecPtr = srcFsPathPtr->fsRecPtr;
-    copyFsPathPtr->filesystemEpoch = srcFsPathPtr->filesystemEpoch;
-    if (copyFsPathPtr->fsRecPtr != NULL) {
-	copyFsPathPtr->fsRecPtr->fileRefCount++;
-    }
-
-    copyPtr->typePtr = &tclFsPathType;
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * UpdateStringOfFsPath --
- *
- *      Gives an object a valid string rep.
- *      
- * Results:
- *      None.
- *
- * Side effects:
- *	Memory may be allocated.
- *
- *---------------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfFsPath(objPtr)
-    register Tcl_Obj *objPtr;	/* path obj with string rep to update. */
-{
-    FsPath *fsPathPtr = (FsPath*) PATHOBJ(objPtr);
-    CONST char *cwdStr;
-    int cwdLen;
-    Tcl_Obj *copy;
-    
-    if (PATHFLAGS(objPtr) == 0 || fsPathPtr->cwdPtr == NULL) {
-	panic("Called UpdateStringOfFsPath with invalid object");
-    }
-    
-    copy = Tcl_DuplicateObj(fsPathPtr->cwdPtr);
-    Tcl_IncrRefCount(copy);
-    
-    cwdStr = Tcl_GetStringFromObj(copy, &cwdLen);
-    /* 
-     * Should we perhaps use 'Tcl_FSPathSeparator'?
-     * But then what about the Windows special case?
-     * Perhaps we should just check if cwd is a root volume.
-     * We should never get cwdLen == 0 in this code path.
-     */
-    switch (tclPlatform) {
-	case TCL_PLATFORM_UNIX:
-	    if (cwdStr[cwdLen-1] != '/') {
-		Tcl_AppendToObj(copy, "/", 1);
-		cwdLen++;
-	    }
-	    break;
-	case TCL_PLATFORM_WINDOWS:
-	    /* 
-	     * We need the extra 'cwdLen != 2', and ':' checks because 
-	     * a volume relative path doesn't get a '/'.  For example 
-	     * 'glob C:*cat*.exe' will return 'C:cat32.exe'
-	     */
-	    if (cwdStr[cwdLen-1] != '/'
-		    && cwdStr[cwdLen-1] != '\\') {
-		if (cwdLen != 2 || cwdStr[1] != ':') {
-		    Tcl_AppendToObj(copy, "/", 1);
-		    cwdLen++;
-		}
-	    }
-	    break;
-    }
-    Tcl_AppendObjToObj(copy, fsPathPtr->normPathPtr);
-    objPtr->bytes = Tcl_GetStringFromObj(copy, &cwdLen);
-    objPtr->length = cwdLen;
-    copy->bytes = tclEmptyStringRep;
-    copy->length = 0;
-    Tcl_DecrRefCount(copy);
-}
-
-/*
- *---------------------------------------------------------------------------
- *
- * NativePathInFilesystem --
- *
- *      Any path object is acceptable to the native filesystem, by
- *      default (we will throw errors when illegal paths are actually
- *      tried to be used).
- *      
- *      However, this behavior means the native filesystem must be
- *      the last filesystem in the lookup list (otherwise it will
- *      claim all files belong to it, and other filesystems will
- *      never get a look in).
- *
- * Results:
- *      TCL_OK, to indicate 'yes', -1 to indicate no.
- *
- * Side effects:
- *	None.
- *
- *---------------------------------------------------------------------------
- */
-static int 
-NativePathInFilesystem(pathPtr, clientDataPtr)
-    Tcl_Obj *pathPtr;
-    ClientData *clientDataPtr;
-{
-    /* 
-     * A special case is required to handle the empty path "". 
-     * This is a valid path (i.e. the user should be able
-     * to do 'file exists ""' without throwing an error), but
-     * equally the path doesn't exist.  Those are the semantics
-     * of Tcl (at present anyway), so we have to abide by them
-     * here.
-     */
-    if (pathPtr->typePtr == &tclFsPathType) {
-	if (pathPtr->bytes != NULL && pathPtr->bytes[0] == '\0') {
-	    /* We reject the empty path "" */
-	    return -1;
-	}
-	/* Otherwise there is no way this path can be empty */
-    } else {
-	/* 
-	 * It is somewhat unusual to reach this code path without
-	 * the object being of tclFsPathType.  However, we do
-	 * our best to deal with the situation.
-	 */
-	int len;
-	Tcl_GetStringFromObj(pathPtr,&len);
-	if (len == 0) {
-	    /* We reject the empty path "" */
-	    return -1;
-	}
-    }
-    /* 
-     * Path is of correct type, or is of non-zero length, 
-     * so we accept it.
-     */
-    return TCL_OK;
-}
diff --git a/generic/tclIndexObj.c b/generic/tclIndexObj.c
index 0103cdb..6a818f2 100644
--- a/generic/tclIndexObj.c
+++ b/generic/tclIndexObj.c
@@ -1,36 +1,33 @@
-/* 
+/*
  * tclIndexObj.c --
  *
- *	This file implements objects of type "index".  This object type
- *	is used to lookup a keyword in a table of valid values and cache
- *	the index of the matching entry.
+ *	This file implements objects of type "index". This object type is used
+ *	to lookup a keyword in a table of valid values and cache the index of
+ *	the matching entry.
  *
  * Copyright (c) 1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * Prototypes for procedures defined later in this file:
+ * Prototypes for functions defined later in this file:
  */
 
-static int		SetIndexFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static void		UpdateStringOfIndex _ANSI_ARGS_((Tcl_Obj *objPtr));
-static void		DupIndex _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *dupPtr));
-static void		FreeIndex _ANSI_ARGS_((Tcl_Obj *objPtr));
+static int		SetIndexFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static void		UpdateStringOfIndex(Tcl_Obj *objPtr);
+static void		DupIndex(Tcl_Obj *srcPtr, Tcl_Obj *dupPtr);
+static void		FreeIndex(Tcl_Obj *objPtr);
 
 /*
- * The structure below defines the index Tcl object type by means of
- * procedures that can be invoked by generic object code.
+ * The structure below defines the index Tcl object type by means of functions
+ * that can be invoked by generic object code.
  */
 
-Tcl_ObjType tclIndexType = {
+static Tcl_ObjType indexType = {
     "index",				/* name */
     FreeIndex,				/* freeIntRepProc */
     DupIndex,				/* dupIntRepProc */
@@ -39,15 +36,15 @@ Tcl_ObjType tclIndexType = {
 };
 
 /*
- * The definition of the internal representation of the "index"
- * object; The internalRep.otherValuePtr field of an object of "index"
- * type will be a pointer to one of these structures.
+ * The definition of the internal representation of the "index" object; The
+ * internalRep.twoPtrValue.ptr1 field of an object of "index" type will be a
+ * pointer to one of these structures.
  *
  * Keep this structure declaration in sync with tclTestObj.c
  */
 
 typedef struct {
-    VOID *tablePtr;			/* Pointer to the table of strings */
+    void *tablePtr;			/* Pointer to the table of strings */
     int offset;				/* Offset between table entries */
     int index;				/* Selected index into table. */
 } IndexRep;
@@ -55,68 +52,68 @@ typedef struct {
 /*
  * The following macros greatly simplify moving through a table...
  */
-#define STRING_AT(table, offset, index) \
-	(*((CONST char * CONST *)(((char *)(table)) + ((offset) * (index)))))
+
+#define STRING_AT(table, offset) \
+	(*((const char *const *)(((char *)(table)) + (offset))))
 #define NEXT_ENTRY(table, offset) \
-	(&(STRING_AT(table, offset, 1)))
+	(&(STRING_AT(table, offset)))
 #define EXPAND_OF(indexRep) \
-	STRING_AT((indexRep)->tablePtr, (indexRep)->offset, (indexRep)->index)
-
+	STRING_AT((indexRep)->tablePtr, (indexRep)->offset*(indexRep)->index)
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_GetIndexFromObj --
  *
- *	This procedure looks up an object's value in a table of strings
- *	and returns the index of the matching string, if any.
+ *	This function looks up an object's value in a table of strings and
+ *	returns the index of the matching string, if any.
  *
  * Results:
- *
- *	If the value of objPtr is identical to or a unique abbreviation
- *	for one of the entries in objPtr, then the return value is
- *	TCL_OK and the index of the matching entry is stored at
- *	*indexPtr.  If there isn't a proper match, then TCL_ERROR is
- *	returned and an error message is left in interp's result (unless
- *	interp is NULL).  The msg argument is used in the error
- *	message; for example, if msg has the value "option" then the
- *	error message will say something flag 'bad option "foo": must be
+ *	If the value of objPtr is identical to or a unique abbreviation for
+ *	one of the entries in objPtr, then the return value is TCL_OK and the
+ *	index of the matching entry is stored at *indexPtr. If there isn't a
+ *	proper match, then TCL_ERROR is returned and an error message is left
+ *	in interp's result (unless interp is NULL). The msg argument is used
+ *	in the error message; for example, if msg has the value "option" then
+ *	the error message will say something flag 'bad option "foo": must be
  *	...'
  *
  * Side effects:
- *	The result of the lookup is cached as the internal rep of
- *	objPtr, so that repeated lookups can be done quickly.
+ *	The result of the lookup is cached as the internal rep of objPtr, so
+ *	that repeated lookups can be done quickly.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetIndexFromObj(interp, objPtr, tablePtr, msg, flags, indexPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* Object containing the string to lookup. */
-    CONST char **tablePtr;	/* Array of strings to compare against the
+Tcl_GetIndexFromObj(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    Tcl_Obj *objPtr,		/* Object containing the string to lookup. */
+    const char **tablePtr,	/* Array of strings to compare against the
 				 * value of objPtr; last entry must be NULL
 				 * and there must not be duplicate entries. */
-    CONST char *msg;		/* Identifying word to use in error messages. */
-    int flags;			/* 0 or TCL_EXACT */
-    int *indexPtr;		/* Place to store resulting integer index. */
+    const char *msg,		/* Identifying word to use in error
+				 * messages. */
+    int flags,			/* 0 or TCL_EXACT */
+    int *indexPtr)		/* Place to store resulting integer index. */
 {
 
     /*
-     * See if there is a valid cached result from a previous lookup
-     * (doing the check here saves the overhead of calling
-     * Tcl_GetIndexFromObjStruct in the common case where the result
-     * is cached).
+     * See if there is a valid cached result from a previous lookup (doing the
+     * check here saves the overhead of calling Tcl_GetIndexFromObjStruct in
+     * the common case where the result is cached).
      */
 
-    if (objPtr->typePtr == &tclIndexType) {
-	IndexRep *indexRep = (IndexRep *) objPtr->internalRep.otherValuePtr;
+    if (objPtr->typePtr == &indexType) {
+	IndexRep *indexRep = objPtr->internalRep.twoPtrValue.ptr1;
+
 	/*
-	 * Here's hoping we don't get hit by unfortunate packing
-	 * constraints on odd platforms like a Cray PVP...
+	 * Here's hoping we don't get hit by unfortunate packing constraints
+	 * on odd platforms like a Cray PVP...
 	 */
-	if (indexRep->tablePtr == (VOID *)tablePtr &&
-		indexRep->offset == sizeof(char *)) {
+
+	if (indexRep->tablePtr == (void *) tablePtr
+		&& indexRep->offset == sizeof(char *)) {
 	    *indexPtr = indexRep->index;
 	    return TCL_OK;
 	}
@@ -130,49 +127,46 @@ Tcl_GetIndexFromObj(interp, objPtr, tablePtr, msg, flags, indexPtr)
  *
  * Tcl_GetIndexFromObjStruct --
  *
- *	This procedure looks up an object's value given a starting
- *	string and an offset for the amount of space between strings.
- *	This is useful when the strings are embedded in some other
- *	kind of array.
+ *	This function looks up an object's value given a starting string and
+ *	an offset for the amount of space between strings. This is useful when
+ *	the strings are embedded in some other kind of array.
  *
  * Results:
- *
- *	If the value of objPtr is identical to or a unique abbreviation
- *	for one of the entries in objPtr, then the return value is
- *	TCL_OK and the index of the matching entry is stored at
- *	*indexPtr.  If there isn't a proper match, then TCL_ERROR is
- *	returned and an error message is left in interp's result (unless
- *	interp is NULL).  The msg argument is used in the error
- *	message; for example, if msg has the value "option" then the
- *	error message will say something like 'bad option "foo": must be
+ *	If the value of objPtr is identical to or a unique abbreviation for
+ *	one of the entries in objPtr, then the return value is TCL_OK and the
+ *	index of the matching entry is stored at *indexPtr. If there isn't a
+ *	proper match, then TCL_ERROR is returned and an error message is left
+ *	in interp's result (unless interp is NULL). The msg argument is used
+ *	in the error message; for example, if msg has the value "option" then
+ *	the error message will say something like 'bad option "foo": must be
  *	...'
  *
  * Side effects:
- *	The result of the lookup is cached as the internal rep of
- *	objPtr, so that repeated lookups can be done quickly.
+ *	The result of the lookup is cached as the internal rep of objPtr, so
+ *	that repeated lookups can be done quickly.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags, 
-	indexPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* Object containing the string to lookup. */
-    CONST VOID *tablePtr;	/* The first string in the table. The second
+Tcl_GetIndexFromObjStruct(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    Tcl_Obj *objPtr,		/* Object containing the string to lookup. */
+    const void *tablePtr,	/* The first string in the table. The second
 				 * string will be at this address plus the
 				 * offset, the third plus the offset again,
-				 * etc. The last entry must be NULL
-				 * and there must not be duplicate entries. */
-    int offset;			/* The number of bytes between entries */
-    CONST char *msg;		/* Identifying word to use in error messages. */
-    int flags;			/* 0 or TCL_EXACT */
-    int *indexPtr;		/* Place to store resulting integer index. */
+				 * etc. The last entry must be NULL and there
+				 * must not be duplicate entries. */
+    int offset,			/* The number of bytes between entries */
+    const char *msg,		/* Identifying word to use in error
+				 * messages. */
+    int flags,			/* 0 or TCL_EXACT */
+    int *indexPtr)		/* Place to store resulting integer index. */
 {
-    int index, i, numAbbrev;
+    int index, idx, numAbbrev;
     char *key, *p1;
-    CONST char *p2;
-    CONST char * CONST *entryPtr;
+    const char *p2;
+    const char *const *entryPtr;
     Tcl_Obj *resultPtr;
     IndexRep *indexRep;
 
@@ -184,8 +178,8 @@ Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags,
      * See if there is a valid cached result from a previous lookup.
      */
 
-    if (objPtr->typePtr == &tclIndexType) {
-	indexRep = (IndexRep *) objPtr->internalRep.otherValuePtr;
+    if (objPtr->typePtr == &indexType) {
+	indexRep = objPtr->internalRep.twoPtrValue.ptr1;
 	if (indexRep->tablePtr==tablePtr && indexRep->offset==offset) {
 	    *indexPtr = indexRep->index;
 	    return TCL_OK;
@@ -193,7 +187,7 @@ Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags,
     }
 
     /*
-     * Lookup the value of the object in the table.  Accept unique
+     * Lookup the value of the object in the table. Accept unique
      * abbreviations unless TCL_EXACT is set in flags.
      */
 
@@ -207,63 +201,65 @@ Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags,
      *  - A single abbreviation (allowed depending on flags)
      *  - Several abbreviations (never allowed, but overridden by exact match)
      */
-    for (entryPtr = tablePtr, i = 0; *entryPtr != NULL; 
-	    entryPtr = NEXT_ENTRY(entryPtr, offset), i++) {
+
+    for (entryPtr = tablePtr, idx = 0; *entryPtr != NULL;
+	    entryPtr = NEXT_ENTRY(entryPtr, offset), idx++) {
 	for (p1 = key, p2 = *entryPtr; *p1 == *p2; p1++, p2++) {
 	    if (*p1 == '\0') {
-		index = i;
+		index = idx;
 		goto done;
 	    }
 	}
 	if (*p1 == '\0') {
 	    /*
-	     * The value is an abbreviation for this entry.  Continue
-	     * checking other entries to make sure it's unique.  If we
-	     * get more than one unique abbreviation, keep searching to
-	     * see if there is an exact match, but remember the number
-	     * of unique abbreviations and don't allow either.
+	     * The value is an abbreviation for this entry. Continue checking
+	     * other entries to make sure it's unique. If we get more than one
+	     * unique abbreviation, keep searching to see if there is an exact
+	     * match, but remember the number of unique abbreviations and
+	     * don't allow either.
 	     */
 
 	    numAbbrev++;
-	    index = i;
+	    index = idx;
 	}
     }
+
     /*
-     * Check if we were instructed to disallow abbreviations. 
+     * Check if we were instructed to disallow abbreviations.
      */
+
     if ((flags & TCL_EXACT) || (key[0] == '\0') || (numAbbrev != 1)) {
 	goto error;
     }
 
-    done:
+  done:
     /*
-     * Cache the found representation.  Note that we want to avoid
-     * allocating a new internal-rep if at all possible since that is
-     * potentially a slow operation.
+     * Cache the found representation. Note that we want to avoid allocating a
+     * new internal-rep if at all possible since that is potentially a slow
+     * operation.
      */
-    if (objPtr->typePtr == &tclIndexType) {
- 	indexRep = (IndexRep *) objPtr->internalRep.otherValuePtr;
+
+    if (objPtr->typePtr == &indexType) {
+ 	indexRep = objPtr->internalRep.twoPtrValue.ptr1;
     } else {
- 	if ((objPtr->typePtr != NULL)
-		&& (objPtr->typePtr->freeIntRepProc != NULL)) {
- 	    objPtr->typePtr->freeIntRepProc(objPtr);
- 	}
+	TclFreeIntRep(objPtr);
  	indexRep = (IndexRep *) ckalloc(sizeof(IndexRep));
- 	objPtr->internalRep.otherValuePtr = (VOID *) indexRep;
- 	objPtr->typePtr = &tclIndexType;
+ 	objPtr->internalRep.twoPtrValue.ptr1 = indexRep;
+ 	objPtr->typePtr = &indexType;
     }
-    indexRep->tablePtr = (VOID*) tablePtr;
+    indexRep->tablePtr = (void *) tablePtr;
     indexRep->offset = offset;
     indexRep->index = index;
 
     *indexPtr = index;
     return TCL_OK;
 
-    error:
+  error:
     if (interp != NULL) {
 	/*
 	 * Produce a fancy error message.
 	 */
+
 	int count = 0;
 
 	TclNewObj(resultPtr);
@@ -273,21 +269,20 @@ Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags,
 	    entryPtr = NEXT_ENTRY(entryPtr, offset);
 	}
 	Tcl_AppendStringsToObj(resultPtr, (numAbbrev > 1) &&
-		!(flags & TCL_EXACT) ? "ambiguous " : "bad ", msg, " \"",
-		key, "\": must be ", *entryPtr, (char*)NULL);
+		!(flags & TCL_EXACT) ? "ambiguous " : "bad ", msg, " \"", key,
+		"\": must be ", *entryPtr, NULL);
 	entryPtr = NEXT_ENTRY(entryPtr, offset);
 	while (*entryPtr != NULL) {
 	    if (*NEXT_ENTRY(entryPtr, offset) == NULL) {
-		Tcl_AppendStringsToObj(resultPtr,
-			(count > 0) ? ", or " : " or ", *entryPtr,
-			(char *) NULL);
+		Tcl_AppendStringsToObj(resultPtr, ((count > 0) ? "," : ""),
+			" or ", *entryPtr, NULL);
 	    } else if (**entryPtr) {
-		Tcl_AppendStringsToObj(resultPtr, ", ", *entryPtr,
-			(char *) NULL);
+		Tcl_AppendStringsToObj(resultPtr, ", ", *entryPtr, NULL);
 		count++;
 	    }
 	    entryPtr = NEXT_ENTRY(entryPtr, offset);
 	}
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INDEX", msg, key, NULL);
     }
     return TCL_ERROR;
 }
@@ -297,14 +292,14 @@ Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags,
  *
  * SetIndexFromAny --
  *
- *	This procedure is called to convert a Tcl object to index
- *	internal form. However, this doesn't make sense (need to have a
- *	table of keywords in order to do the conversion) so the
- *	procedure always generates an error.
+ *	This function is called to convert a Tcl object to index internal
+ *	form. However, this doesn't make sense (need to have a table of
+ *	keywords in order to do the conversion) so the function always
+ *	generates an error.
  *
  * Results:
- *	The return value is always TCL_ERROR, and an error message is
- *	left in interp's result if interp isn't NULL. 
+ *	The return value is always TCL_ERROR, and an error message is left in
+ *	interp's result if interp isn't NULL.
  *
  * Side effects:
  *	None.
@@ -313,14 +308,14 @@ Tcl_GetIndexFromObjStruct(interp, objPtr, tablePtr, offset, msg, flags,
  */
 
 static int
-SetIndexFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
+SetIndexFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
 {
     if (interp) {
-    Tcl_AppendToObj(Tcl_GetObjResult(interp),
+    Tcl_SetObjResult(interp, Tcl_NewStringObj(
 	    "can't convert value to index except via Tcl_GetIndexFromObj API",
-	    -1);
+	    -1));
     }
     return TCL_ERROR;
 }
@@ -330,9 +325,8 @@ SetIndexFromAny(interp, objPtr)
  *
  * UpdateStringOfIndex --
  *
- *	This procedure is called to convert a Tcl object from index
- *	internal form to its string form.  No abbreviation is ever
- *	generated.
+ *	This function is called to convert a Tcl object from index internal
+ *	form to its string form. No abbreviation is ever generated.
  *
  * Results:
  *	None.
@@ -344,13 +338,13 @@ SetIndexFromAny(interp, objPtr)
  */
 
 static void
-UpdateStringOfIndex(objPtr)
-    Tcl_Obj *objPtr;
+UpdateStringOfIndex(
+    Tcl_Obj *objPtr)
 {
-    IndexRep *indexRep = (IndexRep *) objPtr->internalRep.otherValuePtr;
+    IndexRep *indexRep = objPtr->internalRep.twoPtrValue.ptr1;
     register char *buf;
     register unsigned len;
-    register CONST char *indexStr = EXPAND_OF(indexRep);
+    register const char *indexStr = EXPAND_OF(indexRep);
 
     len = strlen(indexStr);
     buf = (char *) ckalloc(len + 1);
@@ -364,29 +358,30 @@ UpdateStringOfIndex(objPtr)
  *
  * DupIndex --
  *
- *	This procedure is called to copy the internal rep of an index
- *	Tcl object from to another object.
+ *	This function is called to copy the internal rep of an index Tcl
+ *	object from to another object.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The internal representation of the target object is updated
- *	and the type is set.
+ *	The internal representation of the target object is updated and the
+ *	type is set.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-DupIndex(srcPtr, dupPtr)
-    Tcl_Obj *srcPtr, *dupPtr;
+DupIndex(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *dupPtr)
 {
-    IndexRep *srcIndexRep = (IndexRep *) srcPtr->internalRep.otherValuePtr;
+    IndexRep *srcIndexRep = srcPtr->internalRep.twoPtrValue.ptr1;
     IndexRep *dupIndexRep = (IndexRep *) ckalloc(sizeof(IndexRep));
 
     memcpy(dupIndexRep, srcIndexRep, sizeof(IndexRep));
-    dupPtr->internalRep.otherValuePtr = (VOID *) dupIndexRep;
-    dupPtr->typePtr = &tclIndexType;
+    dupPtr->internalRep.twoPtrValue.ptr1 = dupIndexRep;
+    dupPtr->typePtr = &indexType;
 }
 
 /*
@@ -394,8 +389,8 @@ DupIndex(srcPtr, dupPtr)
  *
  * FreeIndex --
  *
- *	This procedure is called to delete the internal rep of an index
- *	Tcl object.
+ *	This function is called to delete the internal rep of an index Tcl
+ *	object.
  *
  * Results:
  *	None.
@@ -407,10 +402,11 @@ DupIndex(srcPtr, dupPtr)
  */
 
 static void
-FreeIndex(objPtr)
-    Tcl_Obj *objPtr;
+FreeIndex(
+    Tcl_Obj *objPtr)
 {
-    ckfree((char *) objPtr->internalRep.otherValuePtr);
+    ckfree((char *) objPtr->internalRep.twoPtrValue.ptr1);
+    objPtr->typePtr = NULL;
 }
 
 /*
@@ -418,70 +414,241 @@ FreeIndex(objPtr)
  *
  * Tcl_WrongNumArgs --
  *
- *	This procedure generates a "wrong # args" error message in an
- *	interpreter.  It is used as a utility function by many command
- *	procedures.
+ *	This function generates a "wrong # args" error message in an
+ *	interpreter. It is used as a utility function by many command
+ *	functions, including the function that implements procedures.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	An error message is generated in interp's result object to
- *	indicate that a command was invoked with the wrong number of
- *	arguments.  The message has the form
+ *	An error message is generated in interp's result object to indicate
+ *	that a command was invoked with the wrong number of arguments. The
+ *	message has the form
  *		wrong # args: should be "foo bar additional stuff"
- *	where "foo" and "bar" are the initial objects in objv (objc
- *	determines how many of these are printed) and "additional stuff"
- *	is the contents of the message argument.
+ *	where "foo" and "bar" are the initial objects in objv (objc determines
+ *	how many of these are printed) and "additional stuff" is the contents
+ *	of the message argument.
+ *
+ *	The message printed is modified somewhat if the command is wrapped
+ *	inside an ensemble. In that case, the error message generated is
+ *	rewritten in such a way that it appears to be generated from the
+ *	user-visible command and not how that command is actually implemented,
+ *	giving a better overall user experience.
+ *
+ *	Internally, the Tcl core may set the flag INTERP_ALTERNATE_WRONG_ARGS
+ *	in the interpreter to generate complex multi-part messages by calling
+ *	this function repeatedly. This allows the code that knows how to
+ *	handle ensemble-related error messages to be kept here while still
+ *	generating suitable error messages for commands like [read] and
+ *	[socket]. Ideally, this would be done through an extra flags argument,
+ *	but that wouldn't be source-compatible with the existing API and it's
+ *	a fairly rare requirement anyway.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_WrongNumArgs(interp, objc, objv, message)
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments to print
-					 * from objv. */
-    Tcl_Obj *CONST objv[];		/* Initial argument objects, which
-					 * should be included in the error
-					 * message. */
-    CONST char *message;		/* Error message to print after the
-					 * leading objects in objv. The
-					 * message may be NULL. */
+Tcl_WrongNumArgs(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments to print from objv. */
+    Tcl_Obj *const objv[],	/* Initial argument objects, which should be
+				 * included in the error message. */
+    const char *message)	/* Error message to print after the leading
+				 * objects in objv. The message may be
+				 * NULL. */
 {
     Tcl_Obj *objPtr;
-    int i;
-    register IndexRep *indexRep;
+    int i, len, elemLen, flags;
+    Interp *iPtr = (Interp *) interp;
+    const char *elementStr;
+
+    /*
+     * [incr Tcl] does something fairly horrific when generating error
+     * messages for its ensembles; it passes the whole set of ensemble
+     * arguments as a list in the first argument. This means that this code
+     * causes a problem in iTcl if it attempts to correctly quote all
+     * arguments, which would be the correct thing to do. We work around this
+     * nasty behaviour for now, and hope that we can remove it all in the
+     * future...
+     */
+
+#ifndef AVOID_HACKS_FOR_ITCL
+    int isFirst = 1;		/* Special flag used to inhibit the treating
+				 * of the first word as a list element so the
+				 * hacky way Itcl generates error messages for
+				 * its ensembles will still work. [Bug
+				 * 1066837] */
+#   define MAY_QUOTE_WORD	(!isFirst)
+#   define AFTER_FIRST_WORD	(isFirst = 0)
+#else /* !AVOID_HACKS_FOR_ITCL */
+#   define MAY_QUOTE_WORD	1
+#   define AFTER_FIRST_WORD	(void) 0
+#endif /* AVOID_HACKS_FOR_ITCL */
 
     TclNewObj(objPtr);
-    Tcl_SetObjResult(interp, objPtr);
-    Tcl_AppendToObj(objPtr, "wrong # args: should be \"", -1);
+    if (iPtr->flags & INTERP_ALTERNATE_WRONG_ARGS) {
+	Tcl_AppendObjToObj(objPtr, Tcl_GetObjResult(interp));
+	Tcl_AppendToObj(objPtr, " or \"", -1);
+    } else {
+	Tcl_AppendToObj(objPtr, "wrong # args: should be \"", -1);
+    }
+
+    /*
+     * Check to see if we are processing an ensemble implementation, and if so
+     * rewrite the results in terms of how the ensemble was invoked.
+     */
+
+    if (iPtr->ensembleRewrite.sourceObjs != NULL) {
+	int toSkip = iPtr->ensembleRewrite.numInsertedObjs;
+	int toPrint = iPtr->ensembleRewrite.numRemovedObjs;
+	Tcl_Obj *const *origObjv = iPtr->ensembleRewrite.sourceObjs;
+
+	/*
+	 * We only know how to do rewriting if all the replaced objects are
+	 * actually arguments (in objv) to this function. Otherwise it just
+	 * gets too complicated and we'd be better off just giving a slightly
+	 * confusing error message...
+	 */
+
+	if (objc < toSkip) {
+	    goto addNormalArgumentsToMessage;
+	}
+
+	/*
+	 * Strip out the actual arguments that the ensemble inserted.
+	 */
+
+	objv += toSkip;
+	objc -= toSkip;
+
+	/*
+	 * We assume no object is of index type.
+	 */
+
+	for (i=0 ; i<toPrint ; i++) {
+	    /*
+	     * Add the element, quoting it if necessary.
+	     */
+
+	    if (origObjv[i]->typePtr == &indexType) {
+		register IndexRep *indexRep =
+			origObjv[i]->internalRep.twoPtrValue.ptr1;
+
+		elementStr = EXPAND_OF(indexRep);
+		elemLen = strlen(elementStr);
+	    } else if (origObjv[i]->typePtr == &tclEnsembleCmdType) {
+		register EnsembleCmdRep *ecrPtr =
+			origObjv[i]->internalRep.twoPtrValue.ptr1;
+
+		elementStr = ecrPtr->fullSubcmdName;
+		elemLen = strlen(elementStr);
+	    } else {
+		elementStr = TclGetStringFromObj(origObjv[i], &elemLen);
+	    }
+	    flags = 0;
+	    len = TclScanElement(elementStr, elemLen, &flags);
+
+	    if (MAY_QUOTE_WORD && len != elemLen) {
+		char *quotedElementStr = TclStackAlloc(interp,
+			(unsigned)len + 1);
+
+		len = TclConvertElement(elementStr, elemLen,
+			quotedElementStr, flags);
+		Tcl_AppendToObj(objPtr, quotedElementStr, len);
+		TclStackFree(interp, quotedElementStr);
+	    } else {
+		Tcl_AppendToObj(objPtr, elementStr, elemLen);
+	    }
+
+	    AFTER_FIRST_WORD;
+
+	    /*
+	     * Add a space if the word is not the last one (which has a
+	     * moderately complex condition here).
+	     */
+
+	    if (i<toPrint-1 || objc!=0 || message!=NULL) {
+		Tcl_AppendStringsToObj(objPtr, " ", NULL);
+	    }
+	}
+    }
+
+    /*
+     * Now add the arguments (other than those rewritten) that the caller took
+     * from its calling context.
+     */
+
+  addNormalArgumentsToMessage:
     for (i = 0; i < objc; i++) {
 	/*
-	 * If the object is an index type use the index table which allows
-	 * for the correct error message even if the subcommand was
-	 * abbreviated.  Otherwise, just use the string rep.
+	 * If the object is an index type use the index table which allows for
+	 * the correct error message even if the subcommand was abbreviated.
+	 * Otherwise, just use the string rep.
 	 */
-	
-	if (objv[i]->typePtr == &tclIndexType) {
-	    indexRep = (IndexRep *) objv[i]->internalRep.otherValuePtr;
-	    Tcl_AppendStringsToObj(objPtr, EXPAND_OF(indexRep), (char *) NULL);
+
+	if (objv[i]->typePtr == &indexType) {
+	    register IndexRep *indexRep = objv[i]->internalRep.twoPtrValue.ptr1;
+
+	    Tcl_AppendStringsToObj(objPtr, EXPAND_OF(indexRep), NULL);
+	} else if (objv[i]->typePtr == &tclEnsembleCmdType) {
+	    register EnsembleCmdRep *ecrPtr =
+		    objv[i]->internalRep.twoPtrValue.ptr1;
+
+	    Tcl_AppendStringsToObj(objPtr, ecrPtr->fullSubcmdName, NULL);
 	} else {
-	    Tcl_AppendStringsToObj(objPtr, Tcl_GetString(objv[i]),
-		    (char *) NULL);
+	    /*
+	     * Quote the argument if it contains spaces (Bug 942757).
+	     */
+
+	    elementStr = TclGetStringFromObj(objv[i], &elemLen);
+	    flags = 0;
+	    len = TclScanElement(elementStr, elemLen, &flags);
+
+	    if (MAY_QUOTE_WORD && len != elemLen) {
+		char *quotedElementStr = TclStackAlloc(interp,
+			(unsigned) len + 1);
+
+		len = TclConvertElement(elementStr, elemLen,
+			quotedElementStr, flags);
+		Tcl_AppendToObj(objPtr, quotedElementStr, len);
+		TclStackFree(interp, quotedElementStr);
+	    } else {
+		Tcl_AppendToObj(objPtr, elementStr, elemLen);
+	    }
 	}
 
+	AFTER_FIRST_WORD;
+
 	/*
 	 * Append a space character (" ") if there is more text to follow
 	 * (either another element from objv, or the message string).
 	 */
-	if ((i < (objc - 1)) || message) {
-	    Tcl_AppendStringsToObj(objPtr, " ", (char *) NULL);
+
+	if (i<objc-1 || message!=NULL) {
+	    Tcl_AppendStringsToObj(objPtr, " ", NULL);
 	}
     }
 
-    if (message) {
-	Tcl_AppendStringsToObj(objPtr, message, (char *) NULL);
+    /*
+     * Add any trailing message bits and set the resulting string as the
+     * interpreter result. Caller is responsible for reporting this as an
+     * actual error.
+     */
+
+    if (message != NULL) {
+	Tcl_AppendStringsToObj(objPtr, message, NULL);
     }
-    Tcl_AppendStringsToObj(objPtr, "\"", (char *) NULL);
+    Tcl_AppendStringsToObj(objPtr, "\"", NULL);
+    Tcl_SetObjResult(interp, objPtr);
+#undef MAY_QUOTE_WORD
+#undef AFTER_FIRST_WORD
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclInitScript.h b/generic/tclInitScript.h
deleted file mode 100644
index a3a1d6a..0000000
--- a/generic/tclInitScript.h
+++ /dev/null
@@ -1,110 +0,0 @@
-/* 
- * tclInitScript.h --
- *
- *	This file contains Unix & Windows common init script
- *      It is not used on the Mac. (the mac init script is in tclMacInit.c)
- *
- * Copyright (c) 1998 Sun Microsystems, Inc.
- * Copyright (c) 1999 by Scriptics Corporation.
- * All rights reserved.
- */
-
-/*
- * In order to find init.tcl during initialization, the following script
- * is invoked by Tcl_Init().  It looks in several different directories:
- *
- *	$tcl_library		- can specify a primary location, if set
- *				  no other locations will be checked
- *
- *	$env(TCL_LIBRARY)	- highest priority so user can always override
- *				  the search path unless the application has
- *				  specified an exact directory above
- *
- *	$tclDefaultLibrary	- this value is initialized by TclPlatformInit
- *				  from a static C variable that was set at
- *				  compile time
- *
- *	$tcl_libPath		- this value is initialized by a call to
- *				  TclGetLibraryPath called from Tcl_Init.
- *
- * The first directory on this path that contains a valid init.tcl script
- * will be set as the value of tcl_library.
- *
- * Note that this entire search mechanism can be bypassed by defining an
- * alternate tclInit procedure before calling Tcl_Init().
- */
-
-static char initScript[] = "if {[info proc tclInit]==\"\"} {\n\
-  proc tclInit {} {\n\
-    global tcl_libPath tcl_library errorInfo\n\
-    global env tclDefaultLibrary\n\
-    rename tclInit {}\n\
-    set errors {}\n\
-    set dirs {}\n\
-    if {[info exists tcl_library]} {\n\
-	lappend dirs $tcl_library\n\
-    } else {\n\
-	if {[info exists env(TCL_LIBRARY)]} {\n\
-	    lappend dirs $env(TCL_LIBRARY)\n\
-	}\n\
-	catch {\n\
-	    lappend dirs $tclDefaultLibrary\n\
-	    unset tclDefaultLibrary\n\
-	}\n\
-        set dirs [concat $dirs $tcl_libPath]\n\
-    }\n\
-    foreach i $dirs {\n\
-	set tcl_library $i\n\
-	set tclfile [file join $i init.tcl]\n\
-	if {[file exists $tclfile]} {\n\
-	    if {![catch {uplevel #0 [list source $tclfile]} msg]} {\n\
-		return\n\
-	    } else {\n\
-		append errors \"$tclfile: $msg\n$errorInfo\n\"\n\
-	    }\n\
-	}\n\
-    }\n\
-    set msg \"Can't find a usable init.tcl in the following directories: \n\"\n\
-    append msg \"    $dirs\n\n\"\n\
-    append msg \"$errors\n\n\"\n\
-    append msg \"This probably means that Tcl wasn't installed properly.\n\"\n\
-    error $msg\n\
-  }\n\
-}\n\
-tclInit";
-
-
-/*
- * A pointer to a string that holds an initialization script that if non-NULL
- * is evaluated in Tcl_Init() prior to the the built-in initialization script
- * above.  This variable can be modified by the procedure below.
- */
- 
-static char *          tclPreInitScript = NULL;
-
-
-/*
- *----------------------------------------------------------------------
- *
- * TclSetPreInitScript --
- *
- *	This routine is used to change the value of the internal
- *	variable, tclPreInitScript.
- *
- * Results:
- *	Returns the current value of tclPreInitScript.
- *
- * Side effects:
- *	Changes the way Tcl_Init() routine behaves.
- *
- *----------------------------------------------------------------------
- */
-
-char *
-TclSetPreInitScript (string)
-    char *string;		/* Pointer to a script. */
-{
-    char *prevString = tclPreInitScript;
-    tclPreInitScript = string;
-    return(prevString);
-}
diff --git a/generic/tclInt.decls b/generic/tclInt.decls
index 18d1bdf..102d04b 100644
--- a/generic/tclInt.decls
+++ b/generic/tclInt.decls
@@ -8,6 +8,7 @@
 #
 # Copyright (c) 1998-1999 by Scriptics Corporation.
 # Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+# Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
 #
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -27,12 +28,12 @@ interface tclInt
 #declare 0 {
 #    int TclAccess(const char *path, int mode)
 #}
-declare 1 {
-    int TclAccessDeleteProc(TclAccessProc_ *proc)
-}
-declare 2 {
-    int TclAccessInsertProc(TclAccessProc_ *proc)
-}
+#declare 1 {
+#    int TclAccessDeleteProc(TclAccessProc_ *proc)
+#}
+#declare 2 {
+#    int TclAccessInsertProc(TclAccessProc_ *proc)
+#}
 declare 3 {
     void TclAllocateFreeObjects(void)
 }
@@ -71,14 +72,15 @@ declare 11 {
     void TclDeleteCompiledLocalVars(Interp *iPtr, CallFrame *framePtr)
 }
 declare 12 {
-    void TclDeleteVars(Interp *iPtr, Tcl_HashTable *tablePtr)
-}
-declare 13 {
-    int TclDoGlob(Tcl_Interp *interp, char *separators,
-	    Tcl_DString *headPtr, char *tail, Tcl_GlobTypeData *types)
+    void TclDeleteVars(Interp *iPtr, TclVarHashTable *tablePtr)
 }
+# Removed in 8.5
+#declare 13 {
+#    int TclDoGlob(Tcl_Interp *interp, char *separators,
+#	    Tcl_DString *headPtr, char *tail, Tcl_GlobTypeData *types)
+#}
 declare 14 {
-    void TclDumpMemoryInfo(FILE *outFile)
+    int TclDumpMemoryInfo(ClientData clientData, int flags)
 }
 # Removed in 8.1:
 #  declare 15 {
@@ -87,7 +89,7 @@ declare 14 {
 declare 16 {
     void TclExprFloatError(Tcl_Interp *interp, double value)
 }
-# Removed in 8.4:
+# Removed in 8.4
 #declare 17 {
 #    int TclFileAttrsCmd(Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
 #}
@@ -111,6 +113,7 @@ declare 22 {
 declare 23 {
     Proc *TclFindProc(Interp *iPtr, const char *procName)
 }
+# Replaced with macro (see tclInt.h) in Tcl 8.5.0, restored in 8.5.10
 declare 24 {
     int TclFormatInt(char *buffer, long n)
 }
@@ -121,10 +124,11 @@ declare 25 {
 #  declare 26 {
 #      char *TclGetCwd(Tcl_Interp *interp)
 #  }
-declare 27 {
-    int TclGetDate(char *p, Tcl_WideInt now, long zone,
-	    Tcl_WideInt *timePtr)
-}
+# Removed in 8.5
+#declare 27 {
+#    int TclGetDate(char *p, unsigned long now, long zone,
+#	    unsigned long *timePtr)
+#}
 declare 28 {
     Tcl_Channel TclpGetDefaultStdChannel(int type)
 }
@@ -138,15 +142,16 @@ declare 28 {
 #      char *TclGetEnv(const char *name)
 #  }
 declare 31 {
-    char *TclGetExtension(char *name)
+    const char *TclGetExtension(const char *name)
 }
 declare 32 {
     int TclGetFrame(Tcl_Interp *interp, const char *str,
 	    CallFrame **framePtrPtr)
 }
-declare 33 {
-    TclCmdProcType TclGetInterpProc(void)
-}
+# Removed in Tcl 8.5
+#declare 33 {
+#    TclCmdProcType TclGetInterpProc(void)
+#}
 declare 34 {
     int TclGetIntForIndex(Tcl_Interp *interp, Tcl_Obj *objPtr,
 	    int endValue, int *indexPtr)
@@ -180,9 +185,11 @@ declare 41 {
 declare 42 {
     char *TclpGetUserHome(const char *name, Tcl_DString *bufferPtr)
 }
-declare 43 {
-    int TclGlobalInvoke(Tcl_Interp *interp, int argc, CONST84 char **argv, int flags)
-}
+# Removed in Tcl 8.5a2
+#declare 43 {
+#    int TclGlobalInvoke(Tcl_Interp *interp, int argc, CONST84 char **argv,
+#	    int flags)
+#}
 declare 44 {
     int TclGuessPackageName(const char *fileName, Tcl_DString *bufPtr)
 }
@@ -202,10 +209,10 @@ declare 46 {
 #    Tcl_Obj *TclIncrIndexedScalar(Tcl_Interp *interp, int localIndex,
 #	    long incrAmount)
 #}
-declare 49 {
-    Tcl_Obj *TclIncrVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
-	    Tcl_Obj *part2Ptr, long incrAmount, int part1NotParsed)
-}
+#declare 49 {
+#    Tcl_Obj *TclIncrVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+#	    Tcl_Obj *part2Ptr, long incrAmount, int part1NotParsed)
+#}
 declare 50 {
     void TclInitCompiledLocals(Tcl_Interp *interp, CallFrame *framePtr,
 	    Namespace *nsPtr)
@@ -213,9 +220,11 @@ declare 50 {
 declare 51 {
     int TclInterpInit(Tcl_Interp *interp)
 }
-declare 52 {
-    int TclInvoke(Tcl_Interp *interp, int argc, CONST84 char **argv, int flags)
-}
+# Removed in Tcl 8.5a2
+#declare 52 {
+#    int TclInvoke(Tcl_Interp *interp, int argc, CONST84 char **argv,
+#	    int flags)
+#}
 declare 53 {
     int TclInvokeObjectCommand(ClientData clientData, Tcl_Interp *interp,
 	    int argc, CONST84 char **argv)
@@ -264,16 +273,17 @@ declare 64 {
     int TclObjInvoke(Tcl_Interp *interp, int objc, Tcl_Obj *const objv[],
 	    int flags)
 }
-declare 65 {
-    int TclObjInvokeGlobal(Tcl_Interp *interp, int objc,
-	    Tcl_Obj *const objv[], int flags)
-}
-declare 66 {
-    int TclOpenFileChannelDeleteProc(TclOpenFileChannelProc_ *proc)
-}
-declare 67 {
-    int TclOpenFileChannelInsertProc(TclOpenFileChannelProc_ *proc)
-}
+# Removed in Tcl 8.5a2
+#declare 65 {
+#    int TclObjInvokeGlobal(Tcl_Interp *interp, int objc,
+#	    Tcl_Obj *const objv[], int flags)
+#}
+#declare 66 {
+#    int TclOpenFileChannelDeleteProc(TclOpenFileChannelProc_ *proc)
+#}
+#declare 67 {
+#    int TclOpenFileChannelInsertProc(TclOpenFileChannelProc_ *proc)
+#}
 # Replaced by Tcl_FSAccess in 8.4:
 #declare 68 {
 #    int TclpAccess(const char *path, int mode)
@@ -309,7 +319,7 @@ declare 77 {
     void TclpGetTime(Tcl_Time *time)
 }
 declare 78 {
-    int TclpGetTimeZone(Tcl_WideInt time)
+    int TclpGetTimeZone(unsigned long time)
 }
 # Replaced by Tcl_FSListVolumes in 8.4:
 #declare 79 {
@@ -369,17 +379,18 @@ declare 92 {
 declare 93 {
     void TclProcDeleteProc(ClientData clientData)
 }
-declare 94 {
-    int TclProcInterpProc(ClientData clientData, Tcl_Interp *interp,
-	    int argc, CONST84 char **argv)
-}
+# Removed in Tcl 8.5:
+#declare 94 {
+#    int TclProcInterpProc(ClientData clientData, Tcl_Interp *interp,
+#	    int argc, const char **argv)
+#}
 # Replaced by Tcl_FSStat in 8.4:
 #declare 95 {
 #    int TclpStat(const char *path, Tcl_StatBuf *buf)
 #}
 declare 96 {
-    int TclRenameCommand(Tcl_Interp *interp, char *oldName,
-            char *newName)
+    int TclRenameCommand(Tcl_Interp *interp, const char *oldName,
+            const char *newName)
 }
 declare 97 {
     void TclResetShadowedCmdRefs(Tcl_Interp *interp, Command *newCmdPtr)
@@ -404,7 +415,7 @@ declare 102 {
     void TclSetupEnv(Tcl_Interp *interp)
 }
 declare 103 {
-    int TclSockGetPort(Tcl_Interp *interp, char *str, char *proto,
+    int TclSockGetPort(Tcl_Interp *interp, const char *str, const char *proto,
 	    int *portPtr)
 }
 declare 104 {
@@ -414,12 +425,12 @@ declare 104 {
 #declare 105 {
 #    int TclStat(const char *path, Tcl_StatBuf *buf)
 #}
-declare 106 {
-    int TclStatDeleteProc(TclStatProc_ *proc)
-}
-declare 107 {
-    int TclStatInsertProc(TclStatProc_ *proc)
-}
+#declare 106 {
+#    int TclStatDeleteProc(TclStatProc_ *proc)
+#}
+#declare 107 {
+#    int TclStatInsertProc(TclStatProc_ *proc)
+#}
 declare 108 {
     void TclTeardownNamespace(Namespace *nsPtr)
 }
@@ -521,22 +532,33 @@ declare 132 {
     int TclpHasSockets(Tcl_Interp *interp)
 }
 declare 133 {
-    struct tm *TclpGetDate(TclpTime_t time, int useGMT)
-}
-declare 134 {
-    size_t TclpStrftime(char *s, size_t maxsize, const char *format,
-	    const struct tm *t, int useGMT)
-}
-declare 135 {
-    int TclpCheckStackSpace(void)
+    struct tm *TclpGetDate(const time_t *time, int useGMT)
 }
+# Removed in 8.5
+#declare 134 {
+#    size_t TclpStrftime(char *s, size_t maxsize, const char *format,
+#	    const struct tm *t, int useGMT)
+#}
+#declare 135 {
+#    int TclpCheckStackSpace(void)
+#}
+
+# Added in 8.1:
 
+#declare 137 {
+#   int TclpChdir(const char *dirName)
+#}
 declare 138 {
     CONST84_RETURN char *TclGetEnv(const char *name, Tcl_DString *valuePtr)
 }
-declare 140 {
-    int TclLooksLikeInt(const char *bytes, int length)
-}
+#declare 139 {
+#    int TclpLoadFile(Tcl_Interp *interp, char *fileName, char *sym1,
+#	    char *sym2, Tcl_PackageInitProc **proc1Ptr,
+#	    Tcl_PackageInitProc **proc2Ptr, ClientData *clientDataPtr)
+#}
+#declare 140 {
+#    int TclLooksLikeInt(const char *bytes, int length)
+#}
 # This is used by TclX, but should otherwise be considered private
 declare 141 {
     CONST84_RETURN char *TclpGetCwd(Tcl_Interp *interp, Tcl_DString *cwdPtr)
@@ -569,7 +591,7 @@ declare 149 {
     void TclHandleRelease(TclHandle handle)
 }
 
-# Added in 8.2:
+# Added for Tcl 8.2
 
 declare 150 {
     int TclRegAbout(Tcl_Interp *interp, Tcl_RegExp re)
@@ -585,7 +607,7 @@ declare 153 {
     Tcl_Obj *TclGetLibraryPath(void)
 }
 
-# moved to tclTest.c (static) in 8.3.2:
+# moved to tclTest.c (static) in 8.3.2/8.4a2
 #declare 154 {
 #    int TclTestChannelCmd(ClientData clientData,
 #    Tcl_Interp *interp, int argc, char **argv)
@@ -676,28 +698,252 @@ declare 172 {
     int TclInThreadExit(void)
 }
 
-# Added in 8.4.2:
+# added for 8.4.2
 
 declare 173 {
     int TclUniCharMatch(const Tcl_UniChar *string, int strLen,
-	    const Tcl_UniChar *pattern, int ptnLen, int nocase)
+	    const Tcl_UniChar *pattern, int ptnLen, int flags)
+}
+
+# added for 8.4.3
+
+#declare 174 {
+#    Tcl_Obj *TclIncrWideVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+#	    Tcl_Obj *part2Ptr, Tcl_WideInt wideIncrAmount, int part1NotParsed)
+#}
+
+# Factoring out of trace code
+
+declare 175 {
+    int TclCallVarTraces(Interp *iPtr, Var *arrayPtr, Var *varPtr,
+	    const char *part1, const char *part2, int flags, int leaveErrMsg)
+}
+declare 176 {
+    void TclCleanupVar(Var *varPtr, Var *arrayPtr)
+}
+declare 177 {
+    void TclVarErrMsg(Tcl_Interp *interp, const char *part1, const char *part2,
+	    const char *operation, const char *reason)
 }
+declare 178 {
+    void Tcl_SetStartupScript(Tcl_Obj *pathPtr, const char *encodingName)
+}
+declare 179 {
+    Tcl_Obj *Tcl_GetStartupScript(const char **encodingNamePtr)
+}
+
+# REMOVED
+# Allocate lists without copying arrays
+# declare 180 {
+#    Tcl_Obj *TclNewListObjDirect(int objc, Tcl_Obj **objv)
+# }
+#declare 181 {
+#    Tcl_Obj *TclDbNewListObjDirect(int objc, Tcl_Obj **objv,
+#	    const char *file, int line)
+#}
 
 # TclpGmtime and TclpLocaltime promoted to the generic interface from unix
 
 declare 182 {
-     struct tm *TclpLocaltime(TclpTime_t_CONST clock)
+     struct tm *TclpLocaltime(const time_t *clock)
 }
 declare 183 {
-     struct tm *TclpGmtime(TclpTime_t_CONST clock)
+     struct tm *TclpGmtime(const time_t *clock)
 }
 
-declare 199 {
-    int TclMatchIsTrivial(const char *pattern)
+# For the new "Thread Storage" subsystem.
+
+### REMOVED on grounds it should never have been exposed. All these
+### functions are now either static in tclThreadStorage.c or
+### MODULE_SCOPE.
+# declare 184 {
+#      void TclThreadStorageLockInit(void)
+# }
+# declare 185 {
+#      void TclThreadStorageLock(void)
+# }
+# declare 186 {
+#      void TclThreadStorageUnlock(void)
+# }
+# declare 187 {
+#      void TclThreadStoragePrint(FILE *outFile, int flags)
+# }
+# declare 188 {
+#      Tcl_HashTable *TclThreadStorageGetHashTable(Tcl_ThreadId id)
+# }
+# declare 189 {
+#      Tcl_HashTable *TclThreadStorageInit(Tcl_ThreadId id, void *reserved)
+# }
+# declare 190 {
+#      void TclThreadStorageDataKeyInit(Tcl_ThreadDataKey *keyPtr)
+# }
+# declare 191 {
+#      void *TclThreadStorageDataKeyGet(Tcl_ThreadDataKey *keyPtr)
+# }
+# declare 192 {
+#      void TclThreadStorageDataKeySet(Tcl_ThreadDataKey *keyPtr, void *data)
+# }
+# declare 193 {
+#      void TclFinalizeThreadStorageThread(Tcl_ThreadId id)
+# }
+# declare 194 {
+#      void TclFinalizeThreadStorage(void)
+# }
+# declare 195 {
+#      void TclFinalizeThreadStorageData(Tcl_ThreadDataKey *keyPtr)
+# }
+# declare 196 {
+#      void TclFinalizeThreadStorageDataKey(Tcl_ThreadDataKey *keyPtr)
+# }
+
+#
+# Added in tcl8.5a5 for compiler/executor experimentation.
+# Disabled in Tcl 8.5.1; experiments terminated. :/
+#
+#declare 197 {
+#    int TclCompEvalObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+#		        const CmdFrame *invoker, int word)
+#}
+declare 198 {
+    int TclObjGetFrame(Tcl_Interp *interp, Tcl_Obj *objPtr,
+	    CallFrame **framePtrPtr)
+}
+
+#declare 199 {
+#    int TclMatchIsTrivial(const char *pattern)
+#}
+
+# 200-208 exported for use by the test suite [Bug 1054748]
+declare 200 {
+    int TclpObjRemoveDirectory(Tcl_Obj *pathPtr, int recursive,
+	Tcl_Obj **errorPtr)
+}
+declare 201 {
+    int TclpObjCopyDirectory(Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr,
+	Tcl_Obj **errorPtr)
+}
+declare 202 {
+    int TclpObjCreateDirectory(Tcl_Obj *pathPtr)
+}
+declare 203 {
+    int TclpObjDeleteFile(Tcl_Obj *pathPtr)
+}
+declare 204 {
+    int TclpObjCopyFile(Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr)
+}
+declare 205 {
+    int TclpObjRenameFile(Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr)
+}
+declare 206 {
+    int TclpObjStat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf)
+}
+declare 207 {
+    int TclpObjAccess(Tcl_Obj *pathPtr, int mode)
+}
+declare 208 {
+    Tcl_Channel TclpOpenFileChannel(Tcl_Interp *interp,
+	    Tcl_Obj *pathPtr, int mode, int permissions)
+}
+# Made public by TIP 258
+#declare 209 {
+#    Tcl_Obj *TclGetEncodingSearchPath(void)
+#}
+#declare 210 {
+#    int TclSetEncodingSearchPath(Tcl_Obj *searchPath)
+#}
+#declare 211 {
+#    const char *TclpGetEncodingNameFromEnvironment(Tcl_DString *bufPtr)
+#}
+declare 212 {
+    void TclpFindExecutable(const char *argv0)
+}
+declare 213 {
+    Tcl_Obj *TclGetObjNameOfExecutable(void)
+}
+declare 214 {
+    void TclSetObjNameOfExecutable(Tcl_Obj *name, Tcl_Encoding encoding)
+}
+declare 215 {
+    void *TclStackAlloc(Tcl_Interp *interp, int numBytes)
+}
+declare 216 {
+    void TclStackFree(Tcl_Interp *interp, void *freePtr)
+}
+declare 217 {
+    int TclPushStackFrame(Tcl_Interp *interp, Tcl_CallFrame **framePtrPtr,
+            Tcl_Namespace *namespacePtr, int isProcCallFrame)
+}
+declare 218 {
+    void TclPopStackFrame(Tcl_Interp *interp)
+}
+
+# for use in tclTest.c
+declare 224 {
+    TclPlatformType *TclGetPlatform(void)
+}
+
+#
+declare 225 {
+    Tcl_Obj *TclTraceDictPath(Tcl_Interp *interp, Tcl_Obj *rootPtr,
+	    int keyc, Tcl_Obj *const keyv[], int flags)
+}
+declare 226 {
+    int TclObjBeingDeleted(Tcl_Obj *objPtr)
+}
+declare 227 {
+    void TclSetNsPath(Namespace *nsPtr, int pathLength,
+            Tcl_Namespace *pathAry[])
+}
+declare 228 {
+    int TclObjInterpProcCore(register Tcl_Interp *interp, Tcl_Obj *procNameObj,
+             int skip, ProcErrorProc errorProc)
+}
+declare 229 {
+    int	TclPtrMakeUpvar(Tcl_Interp *interp, Var *otherP1Ptr,
+	    const char *myName, int myFlags, int index)
+}
+declare 230 {
+    Var *TclObjLookupVar(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+	    const char *part2, int flags, const char *msg,
+	    const int createPart1, const int createPart2, Var **arrayPtrPtr)
+}
+declare 231 {
+    int	TclGetNamespaceFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+	    Tcl_Namespace **nsPtrPtr)
+}
+
+# Bits and pieces of TIP#280's guts
+declare 232 {
+    int TclEvalObjEx(Tcl_Interp *interp, Tcl_Obj *objPtr, int flags,
+	    const CmdFrame *invoker, int word)
+}
+declare 233 {
+    void TclGetSrcInfoForPc(CmdFrame *contextPtr)
+}
+
+# Exports for VarReform compat: Itcl, XOTcl like to peek into our varTables :(
+declare 234 {
+    Var *TclVarHashCreateVar(TclVarHashTable *tablePtr, const char *key,
+             int *newPtr)
+}
+declare 235 {
+    void TclInitVarHashTable(TclVarHashTable *tablePtr, Namespace *nsPtr)
+}
+
+
+# TIP 337 made this one public
+declare 236 {
+    void TclBackgroundException(Tcl_Interp *interp, int code)
+}
+
+# Tcl_Obj leak detection support.
+declare 243 {
+    void TclDbDumpActiveObjects(FILE *outFile)
 }
 
 declare 249 {
-    void TclUnusedStubEntry(void)
+    char *TclDoubleDigits(double dv, int ndigits, int flags,
+			  int *decpt, int *signum, char **endPtr)
 }
 
 ##############################################################################
@@ -752,7 +998,7 @@ declare 9 win {
 declare 10 win {
     Tcl_DirEntry *TclpReaddir(DIR *dir)
 }
-# Removed in 8.3.1 (for Win32s only):
+# Removed in 8.3.1 (for Win32s only)
 #declare 10 win {
 #    int TclWinSynchSpawn(void *args, int type, void **trans, Tcl_Pid *pidPtr)
 #}
@@ -788,6 +1034,11 @@ declare 16 win {
 #  declare 17 win {
 #      char *TclpGetTZName(void)
 #  }
+# new for 8.5.12+ Cygwin only
+declare 17 win {
+    int TclUnixCopyFile(const char *src, const char *dst,
+	    const Tcl_StatBuf *statBufPtr, int dontCopyAtts)
+}
 declare 18 win {
     TclFile TclpMakeFile(Tcl_Channel channel, int direction)
 }
@@ -801,7 +1052,7 @@ declare 20 win {
 declare 21 win {
     char *TclpInetNtoa(struct in_addr addr)
 }
-# Removed in 8.4:
+# removed permanently for 8.4
 #declare 21 win {
 #    void TclpAsyncMark(Tcl_AsyncHandler async)
 #}
@@ -816,24 +1067,28 @@ declare 23 win {
 declare 24 win {
     char *TclWinNoBackslash(char *path)
 }
-declare 25 win {
-    TclPlatformType *TclWinGetPlatform(void)
-}
+# replaced by generic TclGetPlatform
+#declare 25 win {
+#    TclPlatformType *TclWinGetPlatform(void)
+#}
 declare 26 win {
     void TclWinSetInterfaces(int wide)
 }
 
-# Added in 8.3.3:
+# Added in Tcl 8.3.3 / 8.4
 
 declare 27 win {
     void TclWinFlushDirtyChannels(void)
 }
 
-# Added in 8.4.2:
+# Added in 8.4.2
 
 declare 28 win {
     void TclWinResetInterfaces(void)
 }
+declare 29 win {
+    int TclWinCPUID(unsigned int index, unsigned int *regs)
+}
 
 ################################
 # Unix specific functions
@@ -886,15 +1141,46 @@ declare 10 unix {
 # Slots 11 and 12 are forwarders for functions that were promoted to
 # generic Stubs
 declare 11 unix {
-    struct tm *TclpLocaltime_unix(TclpTime_t_CONST clock)
+    struct tm *TclpLocaltime_unix(const time_t *clock)
 }
 declare 12 unix {
-    struct tm *TclpGmtime_unix(TclpTime_t_CONST clock)
+    struct tm *TclpGmtime_unix(const time_t *clock)
 }
 declare 13 unix {
     char *TclpInetNtoa(struct in_addr addr)
 }
-declare 29 {win unix} {
+
+# Added in 8.5:
+
+declare 14 unix {
+    int TclUnixCopyFile(const char *src, const char *dst,
+	    const Tcl_StatBuf *statBufPtr, int dontCopyAtts)
+}
+
+################################
+# Mac OS X specific functions
+
+declare 15 macosx {
+    int TclMacOSXGetFileAttribute(Tcl_Interp *interp, int objIndex,
+	    Tcl_Obj *fileName, Tcl_Obj **attributePtrPtr)
+}
+declare 16 macosx {
+    int TclMacOSXSetFileAttribute(Tcl_Interp *interp, int objIndex,
+	    Tcl_Obj *fileName, Tcl_Obj *attributePtr)
+}
+declare 17 macosx {
+    int TclMacOSXCopyFileAttributes(const char *src, const char *dst,
+	    const Tcl_StatBuf *statBufPtr)
+}
+declare 18 macosx {
+    int TclMacOSXMatchType(Tcl_Interp *interp, const char *pathName,
+	    const char *fileName, Tcl_StatBuf *statBufPtr,
+	    Tcl_GlobTypeData *types)
+}
+declare 19 macosx {
+    void TclMacOSXNotifierAddRunLoopMode(const void *runLoopMode)
+}
+declare 29 unix {
     int TclWinCPUID(unsigned int index, unsigned int *regs)
 }
 
diff --git a/generic/tclInt.h b/generic/tclInt.h
index a9a876e..92251fe 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -10,35 +10,34 @@
  * Copyright (c) 2001, 2002 by Kevin B. Kenny.  All rights reserved.
  * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #ifndef _TCLINT
 #define _TCLINT
 
 /*
- * Common include files needed by most of the Tcl source files are
- * included here, so that system-dependent personalizations for the
- * include files only have to be made in once place.  This results
- * in a few extra includes, but greater modularity.  The order of
- * the three groups of #includes is important.	For example, stdio.h
- * is needed by tcl.h, and the _ANSI_ARGS_ declaration in tcl.h is
- * needed by stdlib.h in some configurations.
+ * Some numerics configuration options.
  */
 
-#ifndef _TCL
-#include "tcl.h"
-#endif
+#undef NO_WIDE_TYPE
+#undef ACCEPT_NAN
+
+/*
+ * Common include files needed by most of the Tcl source files are included
+ * here, so that system-dependent personalizations for the include files only
+ * have to be made in once place. This results in a few extra includes, but
+ * greater modularity. The order of the three groups of #includes is
+ * important. For example, stdio.h is needed by tcl.h, and the _ANSI_ARGS_
+ * declaration in tcl.h is needed by stdlib.h in some configurations.
+ */
+
+#include "tclPort.h"
 
 #include <stdio.h>
 
 #include <ctype.h>
-#ifdef NO_LIMITS_H
-#   include "../compat/limits.h"
-#else
-#   include <limits.h>
-#endif
 #ifdef NO_STDLIB_H
 #   include "../compat/stdlib.h"
 #else
@@ -49,9 +48,14 @@
 #else
 #include <string.h>
 #endif
+#ifdef STDC_HEADERS
+#include <stddef.h>
+#else
+typedef int ptrdiff_t;
+#endif
 
 /*
- * Ensure WORDS_BIGENDIAN is defined correcly:
+ * Ensure WORDS_BIGENDIAN is defined correctly:
  * Needs to happen here in addition to configure to work with fat compiles on
  * Darwin (where configure runs only once for multiple architectures).
  */
@@ -64,15 +68,15 @@
 #endif
 #ifdef BYTE_ORDER
 #    ifdef BIG_ENDIAN
-#        if BYTE_ORDER == BIG_ENDIAN
-#            undef WORDS_BIGENDIAN
-#            define WORDS_BIGENDIAN 1
-#        endif
+#	 if BYTE_ORDER == BIG_ENDIAN
+#	     undef WORDS_BIGENDIAN
+#	     define WORDS_BIGENDIAN 1
+#	 endif
 #    endif
 #    ifdef LITTLE_ENDIAN
-#        if BYTE_ORDER == LITTLE_ENDIAN
-#            undef WORDS_BIGENDIAN
-#        endif
+#	 if BYTE_ORDER == LITTLE_ENDIAN
+#	     undef WORDS_BIGENDIAN
+#	 endif
 #    endif
 #endif
 
@@ -89,66 +93,83 @@
 #   endif
 #endif
 
-#undef TCL_STORAGE_CLASS
-#ifdef BUILD_tcl
-# define TCL_STORAGE_CLASS DLLEXPORT
-#else
-# ifdef USE_TCL_STUBS
-#  define TCL_STORAGE_CLASS
-# else
-#  define TCL_STORAGE_CLASS DLLIMPORT
-# endif
+/*
+ * When Tcl_WideInt and long are the same type, there's no value in
+ * having a tclWideIntType separate from the tclIntType.
+ */
+#ifdef TCL_WIDE_INT_IS_LONG
+#define NO_WIDE_TYPE
+#endif
+
+/*
+ * Macros used to cast between pointers and integers (e.g. when storing an int
+ * in ClientData), on 64-bit architectures they avoid gcc warning about "cast
+ * to/from pointer from/to integer of different size".
+ */
+
+#if !defined(INT2PTR) && !defined(PTR2INT)
+#   if defined(HAVE_INTPTR_T) || defined(intptr_t)
+#	define INT2PTR(p) ((void *)(intptr_t)(p))
+#	define PTR2INT(p) ((int)(intptr_t)(p))
+#   else
+#	define INT2PTR(p) ((void *)(p))
+#	define PTR2INT(p) ((int)(p))
+#   endif
+#endif
+#if !defined(UINT2PTR) && !defined(PTR2UINT)
+#   if defined(HAVE_UINTPTR_T) || defined(uintptr_t)
+#	define UINT2PTR(p) ((void *)(uintptr_t)(p))
+#	define PTR2UINT(p) ((unsigned int)(uintptr_t)(p))
+#   else
+#	define UINT2PTR(p) ((void *)(p))
+#	define PTR2UINT(p) ((unsigned int)(p))
+#   endif
 #endif
 
 /*
- * The following procedures allow namespaces to be customized to
- * support special name resolution rules for commands/variables.
- * 
+ * The following procedures allow namespaces to be customized to support
+ * special name resolution rules for commands/variables.
  */
 
 struct Tcl_ResolvedVarInfo;
 
-typedef Tcl_Var (Tcl_ResolveRuntimeVarProc) _ANSI_ARGS_((
-    Tcl_Interp* interp, struct Tcl_ResolvedVarInfo *vinfoPtr));
+typedef Tcl_Var (Tcl_ResolveRuntimeVarProc)(Tcl_Interp *interp,
+	struct Tcl_ResolvedVarInfo *vinfoPtr);
 
-typedef void (Tcl_ResolveVarDeleteProc) _ANSI_ARGS_((
-    struct Tcl_ResolvedVarInfo *vinfoPtr));
+typedef void (Tcl_ResolveVarDeleteProc)(struct Tcl_ResolvedVarInfo *vinfoPtr);
 
 /*
  * The following structure encapsulates the routines needed to resolve a
- * variable reference at runtime.  Any variable specific state will typically
+ * variable reference at runtime. Any variable specific state will typically
  * be appended to this structure.
  */
 
-
 typedef struct Tcl_ResolvedVarInfo {
     Tcl_ResolveRuntimeVarProc *fetchProc;
     Tcl_ResolveVarDeleteProc *deleteProc;
 } Tcl_ResolvedVarInfo;
 
+typedef int (Tcl_ResolveCompiledVarProc)(Tcl_Interp *interp,
+	CONST84 char *name, int length, Tcl_Namespace *context,
+	Tcl_ResolvedVarInfo **rPtr);
 
+typedef int (Tcl_ResolveVarProc)(Tcl_Interp *interp, CONST84 char *name,
+	Tcl_Namespace *context, int flags, Tcl_Var *rPtr);
 
-typedef int (Tcl_ResolveCompiledVarProc) _ANSI_ARGS_((
-    Tcl_Interp* interp, CONST84 char* name, int length,
-    Tcl_Namespace *context, Tcl_ResolvedVarInfo **rPtr));
-
-typedef int (Tcl_ResolveVarProc) _ANSI_ARGS_((
-    Tcl_Interp* interp, CONST84 char* name, Tcl_Namespace *context,
-    int flags, Tcl_Var *rPtr));
+typedef int (Tcl_ResolveCmdProc)(Tcl_Interp *interp, CONST84 char *name,
+	Tcl_Namespace *context, int flags, Tcl_Command *rPtr);
 
-typedef int (Tcl_ResolveCmdProc) _ANSI_ARGS_((Tcl_Interp* interp,
-    CONST84 char* name, Tcl_Namespace *context, int flags,
-    Tcl_Command *rPtr));
- 
 typedef struct Tcl_ResolverInfo {
-    Tcl_ResolveCmdProc *cmdResProc;	/* Procedure handling command name
-					 * resolution. */
-    Tcl_ResolveVarProc *varResProc;	/* Procedure handling variable name
-					 * resolution for variables that
-					 * can only be handled at runtime. */
+    Tcl_ResolveCmdProc *cmdResProc;
+				/* Procedure handling command name
+				 * resolution. */
+    Tcl_ResolveVarProc *varResProc;
+				/* Procedure handling variable name resolution
+				 * for variables that can only be handled at
+				 * runtime. */
     Tcl_ResolveCompiledVarProc *compiledVarResProc;
-					/* Procedure handling variable name
-					 * resolution at compile time. */
+				/* Procedure handling variable name resolution
+				 * at compile time. */
 } Tcl_ResolverInfo;
 
 /*
@@ -157,427 +178,526 @@ typedef struct Tcl_ResolverInfo {
  *----------------------------------------------------------------
  */
 
+typedef struct Tcl_Ensemble Tcl_Ensemble;
+typedef struct NamespacePathEntry NamespacePathEntry;
+
+/*
+ * Special hashtable for variables: this is just a Tcl_HashTable with an nsPtr
+ * field added at the end: in this way variables can find their namespace
+ * without having to copy a pointer in their struct: they can access it via
+ * their hPtr->tablePtr.
+ */
+
+typedef struct TclVarHashTable {
+    Tcl_HashTable table;
+    struct Namespace *nsPtr;
+} TclVarHashTable;
+
+/*
+ * This is for itcl - it likes to search our varTables directly :(
+ */
+
+#define TclVarHashFindVar(tablePtr, key) \
+    TclVarHashCreateVar((tablePtr), (key), NULL)
+
+
 /*
  * The structure below defines a namespace.
  * Note: the first five fields must match exactly the fields in a
- * Tcl_Namespace structure (see tcl.h). If you change one, be sure to
- * change the other.
+ * Tcl_Namespace structure (see tcl.h). If you change one, be sure to change
+ * the other.
  */
 
 typedef struct Namespace {
-    char *name;			 /* The namespace's simple (unqualified)
-				  * name. This contains no ::'s. The name of
-				  * the global namespace is "" although "::"
-				  * is an synonym. */
-    char *fullName;		 /* The namespace's fully qualified name.
-				  * This starts with ::. */
-    ClientData clientData;	 /* An arbitrary value associated with this
-				  * namespace. */
+    char *name;			/* The namespace's simple (unqualified) name.
+				 * This contains no ::'s. The name of the
+				 * global namespace is "" although "::" is an
+				 * synonym. */
+    char *fullName;		/* The namespace's fully qualified name. This
+				 * starts with ::. */
+    ClientData clientData;	/* An arbitrary value associated with this
+				 * namespace. */
     Tcl_NamespaceDeleteProc *deleteProc;
-				 /* Procedure invoked when deleting the
-				  * namespace to, e.g., free clientData. */
-    struct Namespace *parentPtr; /* Points to the namespace that contains
-				  * this one. NULL if this is the global
-				  * namespace. */
-    Tcl_HashTable childTable;	 /* Contains any child namespaces. Indexed
-				  * by strings; values have type
-				  * (Namespace *). */
-    long nsId;			 /* Unique id for the namespace. */
-    Tcl_Interp *interp;		 /* The interpreter containing this
-				  * namespace. */
-    int flags;			 /* OR-ed combination of the namespace
-				  * status flags NS_DYING and NS_DEAD
-				  * listed below. */
-    int activationCount;	 /* Number of "activations" or active call
-				  * frames for this namespace that are on
-				  * the Tcl call stack. The namespace won't
-				  * be freed until activationCount becomes
-				  * zero. */
-    int refCount;		 /* Count of references by namespaceName *
-				  * objects. The namespace can't be freed
-				  * until refCount becomes zero. */
-    Tcl_HashTable cmdTable;	 /* Contains all the commands currently
-				  * registered in the namespace. Indexed by
-				  * strings; values have type (Command *).
-				  * Commands imported by Tcl_Import have
-				  * Command structures that point (via an
-				  * ImportedCmdRef structure) to the
-				  * Command structure in the source
-				  * namespace's command table. */
-    Tcl_HashTable varTable;	 /* Contains all the (global) variables
-				  * currently in this namespace. Indexed
-				  * by strings; values have type (Var *). */
-    char **exportArrayPtr;	 /* Points to an array of string patterns
-				  * specifying which commands are exported.
-				  * A pattern may include "string match"
-				  * style wildcard characters to specify
-				  * multiple commands; however, no namespace
-				  * qualifiers are allowed. NULL if no
-				  * export patterns are registered. */
-    int numExportPatterns;	 /* Number of export patterns currently
-				  * registered using "namespace export". */
-    int maxExportPatterns;	 /* Mumber of export patterns for which
-				  * space is currently allocated. */
-    int cmdRefEpoch;		 /* Incremented if a newly added command
-				  * shadows a command for which this
-				  * namespace has already cached a Command *
-				  * pointer; this causes all its cached
-				  * Command* pointers to be invalidated. */
-    int resolverEpoch;		 /* Incremented whenever (a) the name resolution
-				  * rules change for this namespace or (b) a 
-				  * newly added command shadows a command that
-				  * is compiled to bytecodes.
-				  * This invalidates all byte codes compiled
-				  * in the namespace, causing the code to be
-				  * recompiled under the new rules.*/
+				/* Procedure invoked when deleting the
+				 * namespace to, e.g., free clientData. */
+    struct Namespace *parentPtr;/* Points to the namespace that contains this
+				 * one. NULL if this is the global
+				 * namespace. */
+    Tcl_HashTable childTable;	/* Contains any child namespaces. Indexed by
+				 * strings; values have type (Namespace *). */
+    long nsId;			/* Unique id for the namespace. */
+    Tcl_Interp *interp;		/* The interpreter containing this
+				 * namespace. */
+    int flags;			/* OR-ed combination of the namespace status
+				 * flags NS_DYING and NS_DEAD listed below. */
+    int activationCount;	/* Number of "activations" or active call
+				 * frames for this namespace that are on the
+				 * Tcl call stack. The namespace won't be
+				 * freed until activationCount becomes zero. */
+    int refCount;		/* Count of references by namespaceName
+				 * objects. The namespace can't be freed until
+				 * refCount becomes zero. */
+    Tcl_HashTable cmdTable;	/* Contains all the commands currently
+				 * registered in the namespace. Indexed by
+				 * strings; values have type (Command *).
+				 * Commands imported by Tcl_Import have
+				 * Command structures that point (via an
+				 * ImportedCmdRef structure) to the Command
+				 * structure in the source namespace's command
+				 * table. */
+    TclVarHashTable varTable;	/* Contains all the (global) variables
+				 * currently in this namespace. Indexed by
+				 * strings; values have type (Var *). */
+    char **exportArrayPtr;	/* Points to an array of string patterns
+				 * specifying which commands are exported. A
+				 * pattern may include "string match" style
+				 * wildcard characters to specify multiple
+				 * commands; however, no namespace qualifiers
+				 * are allowed. NULL if no export patterns are
+				 * registered. */
+    int numExportPatterns;	/* Number of export patterns currently
+				 * registered using "namespace export". */
+    int maxExportPatterns;	/* Mumber of export patterns for which space
+				 * is currently allocated. */
+    int cmdRefEpoch;		/* Incremented if a newly added command
+				 * shadows a command for which this namespace
+				 * has already cached a Command* pointer; this
+				 * causes all its cached Command* pointers to
+				 * be invalidated. */
+    int resolverEpoch;		/* Incremented whenever (a) the name
+				 * resolution rules change for this namespace
+				 * or (b) a newly added command shadows a
+				 * command that is compiled to bytecodes. This
+				 * invalidates all byte codes compiled in the
+				 * namespace, causing the code to be
+				 * recompiled under the new rules.*/
     Tcl_ResolveCmdProc *cmdResProc;
-				 /* If non-null, this procedure overrides
-				  * the usual command resolution mechanism
-				  * in Tcl.  This procedure is invoked
-				  * within Tcl_FindCommand to resolve all
-				  * command references within the namespace. */
+				/* If non-null, this procedure overrides the
+				 * usual command resolution mechanism in Tcl.
+				 * This procedure is invoked within
+				 * Tcl_FindCommand to resolve all command
+				 * references within the namespace. */
     Tcl_ResolveVarProc *varResProc;
-				 /* If non-null, this procedure overrides
-				  * the usual variable resolution mechanism
-				  * in Tcl.  This procedure is invoked
-				  * within Tcl_FindNamespaceVar to resolve all
-				  * variable references within the namespace
-				  * at runtime. */
+				/* If non-null, this procedure overrides the
+				 * usual variable resolution mechanism in Tcl.
+				 * This procedure is invoked within
+				 * Tcl_FindNamespaceVar to resolve all
+				 * variable references within the namespace at
+				 * runtime. */
     Tcl_ResolveCompiledVarProc *compiledVarResProc;
-				 /* If non-null, this procedure overrides
-				  * the usual variable resolution mechanism
-				  * in Tcl.  This procedure is invoked
-				  * within LookupCompiledLocal to resolve
-				  * variable references within the namespace
-				  * at compile time. */
+				/* If non-null, this procedure overrides the
+				 * usual variable resolution mechanism in Tcl.
+				 * This procedure is invoked within
+				 * LookupCompiledLocal to resolve variable
+				 * references within the namespace at compile
+				 * time. */
+    int exportLookupEpoch;	/* Incremented whenever a command is added to
+				 * a namespace, removed from a namespace or
+				 * the exports of a namespace are changed.
+				 * Allows TIP#112-driven command lists to be
+				 * validated efficiently. */
+    Tcl_Ensemble *ensembles;	/* List of structures that contain the details
+				 * of the ensembles that are implemented on
+				 * top of this namespace. */
+    Tcl_Obj *unknownHandlerPtr;	/* A script fragment to be used when command
+				 * resolution in this namespace fails. TIP
+				 * 181. */
+    int commandPathLength;	/* The length of the explicit path. */
+    NamespacePathEntry *commandPathArray;
+				/* The explicit path of the namespace as an
+				 * array. */
+    NamespacePathEntry *commandPathSourceList;
+				/* Linked list of path entries that point to
+				 * this namespace. */
 } Namespace;
 
 /*
+ * An entry on a namespace's command resolution path.
+ */
+
+struct NamespacePathEntry {
+    Namespace *nsPtr;		/* What does this path entry point to? If it
+				 * is NULL, this path entry points is
+				 * redundant and should be skipped. */
+    Namespace *creatorNsPtr;	/* Where does this path entry point from? This
+				 * allows for efficient invalidation of
+				 * references when the path entry's target
+				 * updates its current list of defined
+				 * commands. */
+    NamespacePathEntry *prevPtr, *nextPtr;
+				/* Linked list pointers or NULL at either end
+				 * of the list that hangs off Namespace's
+				 * commandPathSourceList field. */
+};
+
+/*
  * Flags used to represent the status of a namespace:
  *
  * NS_DYING -	1 means Tcl_DeleteNamespace has been called to delete the
  *		namespace but there are still active call frames on the Tcl
  *		stack that refer to the namespace. When the last call frame
  *		referring to it has been popped, it's variables and command
- *		will be destroyed and it will be marked "dead" (NS_DEAD).
- *		The namespace can no longer be looked up by name.
+ *		will be destroyed and it will be marked "dead" (NS_DEAD). The
+ *		namespace can no longer be looked up by name.
  * NS_DEAD -	1 means Tcl_DeleteNamespace has been called to delete the
- *		namespace and no call frames still refer to it. Its
- *		variables and command have already been destroyed. This bit
- *		allows the namespace resolution code to recognize that the
- *		namespace is "deleted". When the last namespaceName object
- *		in any byte code code unit that refers to the namespace has
- *		been freed (i.e., when the namespace's refCount is 0), the
- *		namespace's storage will be freed.
+ *		namespace and no call frames still refer to it. Its variables
+ *		and command have already been destroyed. This bit allows the
+ *		namespace resolution code to recognize that the namespace is
+ *		"deleted". When the last namespaceName object in any byte code
+ *		unit that refers to the namespace has been freed (i.e., when
+ *		the namespace's refCount is 0), the namespace's storage will
+ *		be freed.
  * NS_KILLED    1 means that TclTeardownNamespace has already been called on
  *              this namespace and it should not be called again [Bug 1355942]
  */
 
 #define NS_DYING	0x01
 #define NS_DEAD		0x02
-#define NS_KILLED       0x04
+#define NS_KILLED	0x04
 
 /*
- * Flag passed to TclGetNamespaceForQualName to have it create all namespace
- * components of a namespace-qualified name that cannot be found. The new
- * namespaces are created within their specified parent. Note that this
- * flag's value must not conflict with the values of the flags
- * TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY, and FIND_ONLY_NS (defined in
- * tclNamesp.c).
+ * Flags passed to TclGetNamespaceForQualName:
+ *
+ * TCL_GLOBAL_ONLY		- (see tcl.h) Look only in the global ns.
+ * TCL_NAMESPACE_ONLY		- (see tcl.h) Look only in the context ns.
+ * TCL_CREATE_NS_IF_UNKNOWN	- Create unknown namespaces.
+ * TCL_FIND_ONLY_NS		- The name sought is a namespace name.
  */
 
-#define CREATE_NS_IF_UNKNOWN 0x800
+#define TCL_CREATE_NS_IF_UNKNOWN	0x800
+#define TCL_FIND_ONLY_NS		0x1000
+
+/*
+ * The data cached in an ensemble subcommand's Tcl_Obj rep (reference in
+ * twoPtrValue.ptr1 field). This structure is not shared between Tcl_Objs
+ * referring to the same subcommand, even where one is a duplicate of another.
+ */
+
+typedef struct {
+    Namespace *nsPtr;		/* The namespace backing the ensemble which
+				 * this is a subcommand of. */
+    int epoch;			/* Used to confirm when the data in this
+				 * really structure matches up with the
+				 * ensemble. */
+    Tcl_Command token;		/* Reference to the comamnd for which this
+				 * structure is a cache of the resolution. */
+    char *fullSubcmdName;	/* The full (local) name of the subcommand,
+				 * allocated with ckalloc(). */
+    Tcl_Obj *realPrefixObj;	/* Object containing the prefix words of the
+				 * command that implements this ensemble
+				 * subcommand. */
+} EnsembleCmdRep;
+
+/*
+ * Flag to enable bytecode compilation of an ensemble.
+ */
+
+#define ENSEMBLE_COMPILE 0x4
 
 /*
  *----------------------------------------------------------------
- * Data structures related to variables.   These are used primarily
- * in tclVar.c
+ * Data structures related to variables. These are used primarily in tclVar.c
  *----------------------------------------------------------------
  */
 
 /*
- * The following structure defines a variable trace, which is used to
- * invoke a specific C procedure whenever certain operations are performed
- * on a variable.
+ * The following structure defines a variable trace, which is used to invoke a
+ * specific C procedure whenever certain operations are performed on a
+ * variable.
  */
 
 typedef struct VarTrace {
-    Tcl_VarTraceProc *traceProc;/* Procedure to call when operations given
-				 * by flags are performed on variable. */
+    Tcl_VarTraceProc *traceProc;/* Procedure to call when operations given by
+				 * flags are performed on variable. */
     ClientData clientData;	/* Argument to pass to proc. */
     int flags;			/* What events the trace procedure is
-				 * interested in:  OR-ed combination of
+				 * interested in: OR-ed combination of
 				 * TCL_TRACE_READS, TCL_TRACE_WRITES,
 				 * TCL_TRACE_UNSETS and TCL_TRACE_ARRAY. */
-    struct VarTrace *nextPtr;	/* Next in list of traces associated with
-				 * a particular variable. */
+    struct VarTrace *nextPtr;	/* Next in list of traces associated with a
+				 * particular variable. */
 } VarTrace;
 
 /*
- * The following structure defines a command trace, which is used to
- * invoke a specific C procedure whenever certain operations are performed
- * on a command.
+ * The following structure defines a command trace, which is used to invoke a
+ * specific C procedure whenever certain operations are performed on a
+ * command.
  */
 
 typedef struct CommandTrace {
-    Tcl_CommandTraceProc *traceProc;/* Procedure to call when operations given
-				     * by flags are performed on command. */
-    ClientData clientData;	    /* Argument to pass to proc. */
-    int flags;			    /* What events the trace procedure is
-				     * interested in:  OR-ed combination of
-				     * TCL_TRACE_RENAME, TCL_TRACE_DELETE. */
-    struct CommandTrace *nextPtr;   /* Next in list of traces associated with
-				     * a particular command. */
-    int refCount;                   /* Used to ensure this structure is
-                                     * not deleted too early.  Keeps track
-                                     * of how many pieces of code have
-                                     * a pointer to this structure. */
+    Tcl_CommandTraceProc *traceProc;
+				/* Procedure to call when operations given by
+				 * flags are performed on command. */
+    ClientData clientData;	/* Argument to pass to proc. */
+    int flags;			/* What events the trace procedure is
+				 * interested in: OR-ed combination of
+				 * TCL_TRACE_RENAME, TCL_TRACE_DELETE. */
+    struct CommandTrace *nextPtr;
+				/* Next in list of traces associated with a
+				 * particular command. */
+    int refCount;		/* Used to ensure this structure is not
+				 * deleted too early. Keeps track of how many
+				 * pieces of code have a pointer to this
+				 * structure. */
 } CommandTrace;
 
 /*
- * When a command trace is active (i.e. its associated procedure is
- * executing), one of the following structures is linked into a list
- * associated with the command's interpreter.  The information in
- * the structure is needed in order for Tcl to behave reasonably
- * if traces are deleted while traces are active.
+ * When a command trace is active (i.e. its associated procedure is executing)
+ * one of the following structures is linked into a list associated with the
+ * command's interpreter. The information in the structure is needed in order
+ * for Tcl to behave reasonably if traces are deleted while traces are active.
  */
 
 typedef struct ActiveCommandTrace {
     struct Command *cmdPtr;	/* Command that's being traced. */
     struct ActiveCommandTrace *nextPtr;
-				/* Next in list of all active command
-				 * traces for the interpreter, or NULL
-				 * if no more. */
-    CommandTrace *nextTracePtr;	/* Next trace to check after current
-				 * trace procedure returns;  if this
-				 * trace gets deleted, must update pointer
-				 * to avoid using free'd memory. */
-    int reverseScan;		/* Boolean set true when the traces
-				 * are scanning in reverse order. */
+				/* Next in list of all active command traces
+				 * for the interpreter, or NULL if no more. */
+    CommandTrace *nextTracePtr;	/* Next trace to check after current trace
+				 * procedure returns; if this trace gets
+				 * deleted, must update pointer to avoid using
+				 * free'd memory. */
+    int reverseScan;		/* Boolean set true when traces are scanning
+				 * in reverse order. */
 } ActiveCommandTrace;
 
 /*
  * When a variable trace is active (i.e. its associated procedure is
- * executing), one of the following structures is linked into a list
- * associated with the variable's interpreter.	The information in
- * the structure is needed in order for Tcl to behave reasonably
- * if traces are deleted while traces are active.
+ * executing) one of the following structures is linked into a list associated
+ * with the variable's interpreter. The information in the structure is needed
+ * in order for Tcl to behave reasonably if traces are deleted while traces
+ * are active.
  */
 
 typedef struct ActiveVarTrace {
     struct Var *varPtr;		/* Variable that's being traced. */
     struct ActiveVarTrace *nextPtr;
-				/* Next in list of all active variable
-				 * traces for the interpreter, or NULL
-				 * if no more. */
-    VarTrace *nextTracePtr;	/* Next trace to check after current
-				 * trace procedure returns;  if this
-				 * trace gets deleted, must update pointer
-				 * to avoid using free'd memory. */
+				/* Next in list of all active variable traces
+				 * for the interpreter, or NULL if no more. */
+    VarTrace *nextTracePtr;	/* Next trace to check after current trace
+				 * procedure returns; if this trace gets
+				 * deleted, must update pointer to avoid using
+				 * free'd memory. */
 } ActiveVarTrace;
 
 /*
- * The following structure describes an enumerative search in progress on
- * an array variable;  this are invoked with options to the "array"
- * command.
- */
-
-typedef struct ArraySearch {
-    int id;			/* Integer id used to distinguish among
-				 * multiple concurrent searches for the
-				 * same array. */
-    struct Var *varPtr;		/* Pointer to array variable that's being
-				 * searched. */
-    Tcl_HashSearch search;	/* Info kept by the hash module about
-				 * progress through the array. */
-    Tcl_HashEntry *nextEntry;	/* Non-null means this is the next element
-				 * to be enumerated (it's leftover from
-				 * the Tcl_FirstHashEntry call or from
-				 * an "array anymore" command).	 NULL
-				 * means must call Tcl_NextHashEntry
-				 * to get value to return. */
-    struct ArraySearch *nextPtr;/* Next in list of all active searches
-				 * for this variable, or NULL if this is
-				 * the last one. */
-} ArraySearch;
-
-/*
- * The structure below defines a variable, which associates a string name
- * with a Tcl_Obj value. These structures are kept in procedure call frames
- * (for local variables recognized by the compiler) or in the heap (for
- * global variables and any variable not known to the compiler). For each
- * Var structure in the heap, a hash table entry holds the variable name and
- * a pointer to the Var structure.
+ * The structure below defines a variable, which associates a string name with
+ * a Tcl_Obj value. These structures are kept in procedure call frames (for
+ * local variables recognized by the compiler) or in the heap (for global
+ * variables and any variable not known to the compiler). For each Var
+ * structure in the heap, a hash table entry holds the variable name and a
+ * pointer to the Var structure.
  */
 
 typedef struct Var {
+    int flags;			/* Miscellaneous bits of information about
+				 * variable. See below for definitions. */
     union {
-	Tcl_Obj *objPtr;	/* The variable's object value. Used for 
+	Tcl_Obj *objPtr;	/* The variable's object value. Used for
 				 * scalar variables and array elements. */
-	Tcl_HashTable *tablePtr;/* For array variables, this points to
-				 * information about the hash table used
-				 * to implement the associative array. 
-				 * Points to malloc-ed data. */
-	struct Var *linkPtr;	/* If this is a global variable being
-				 * referred to in a procedure, or a variable
-				 * created by "upvar", this field points to
-				 * the referenced variable's Var struct. */
+	TclVarHashTable *tablePtr;/* For array variables, this points to
+				 * information about the hash table used to
+				 * implement the associative array. Points to
+				 * ckalloc-ed data. */
+	struct Var *linkPtr;	/* If this is a global variable being referred
+				 * to in a procedure, or a variable created by
+				 * "upvar", this field points to the
+				 * referenced variable's Var struct. */
     } value;
-    char *name;			/* NULL if the variable is in a hashtable,
-				 * otherwise points to the variable's
-				 * name. It is used, e.g., by TclLookupVar
-				 * and "info locals". The storage for the
-				 * characters of the name is not owned by
-				 * the Var and must not be freed when
-				 * freeing the Var. */
-    Namespace *nsPtr;		/* Points to the namespace that contains
-				 * this variable or NULL if the variable is
-				 * a local variable in a Tcl procedure. */
-    Tcl_HashEntry *hPtr;	/* If variable is in a hashtable, either the
-				 * hash table entry that refers to this
-				 * variable or NULL if the variable has been
-				 * detached from its hash table (e.g. an
-				 * array is deleted, but some of its
-				 * elements are still referred to in
-				 * upvars). NULL if the variable is not in a
-				 * hashtable. This is used to delete an
-				 * variable from its hashtable if it is no
-				 * longer needed. */
-    int refCount;		/* Counts number of active uses of this
-				 * variable, not including its entry in the
-				 * call frame or the hash table: 1 for each
-				 * additional variable whose linkPtr points
-				 * here, 1 for each nested trace active on
-				 * variable, and 1 if the variable is a 
-				 * namespace variable. This record can't be
-				 * deleted until refCount becomes 0. */
-    VarTrace *tracePtr;		/* First in list of all traces set for this
-				 * variable. */
-    ArraySearch *searchPtr;	/* First in list of all searches active
-				 * for this variable, or NULL if none. */
-    int flags;			/* Miscellaneous bits of information about
-				 * variable. See below for definitions. */
 } Var;
 
-/*
- * Flag bits for variables. The first three (VAR_SCALAR, VAR_ARRAY, and
- * VAR_LINK) are mutually exclusive and give the "type" of the variable.
- * VAR_UNDEFINED is independent of the variable's type. 
+typedef struct VarInHash {
+    Var var;
+    int refCount;		/* Counts number of active uses of this
+				 * variable: 1 for the entry in the hash
+				 * table, 1 for each additional variable whose
+				 * linkPtr points here, 1 for each nested
+				 * trace active on variable, and 1 if the
+				 * variable is a namespace variable. This
+				 * record can't be deleted until refCount
+				 * becomes 0. */
+    Tcl_HashEntry entry;	/* The hash table entry that refers to this
+				 * variable. This is used to find the name of
+				 * the variable and to delete it from its
+				 * hashtable if it is no longer needed. It
+				 * also holds the variable's name. */
+} VarInHash;
+
+/*
+ * Flag bits for variables. The first two (VAR_ARRAY and VAR_LINK) are
+ * mutually exclusive and give the "type" of the variable. If none is set,
+ * this is a scalar variable.
+ *
+ * VAR_ARRAY -			1 means this is an array variable rather than
+ *				a scalar variable or link. The "tablePtr"
+ *				field points to the array's hashtable for its
+ *				elements.
+ * VAR_LINK -			1 means this Var structure contains a pointer
+ *				to another Var structure that either has the
+ *				real value or is itself another VAR_LINK
+ *				pointer. Variables like this come about
+ *				through "upvar" and "global" commands, or
+ *				through references to variables in enclosing
+ *				namespaces.
+ *
+ * Flags that indicate the type and status of storage; none is set for
+ * compiled local variables (Var structs).
  *
- * VAR_SCALAR -			1 means this is a scalar variable and not
- *				an array or link. The "objPtr" field points
- *				to the variable's value, a Tcl object.
- * VAR_ARRAY -			1 means this is an array variable rather
- *				than a scalar variable or link. The
- *				"tablePtr" field points to the array's
- *				hashtable for its elements.
- * VAR_LINK -			1 means this Var structure contains a
- *				pointer to another Var structure that
- *				either has the real value or is itself
- *				another VAR_LINK pointer. Variables like
- *				this come about through "upvar" and "global"
- *				commands, or through references to variables
- *				in enclosing namespaces.
- * VAR_UNDEFINED -		1 means that the variable is in the process
- *				of being deleted. An undefined variable
- *				logically does not exist and survives only
- *				while it has a trace, or if it is a global
- *				variable currently being used by some
- *				procedure.
  * VAR_IN_HASHTABLE -		1 means this variable is in a hashtable and
- *				the Var structure is malloced. 0 if it is
- *				a local variable that was assigned a slot
- *				in a procedure frame by	the compiler so the
- *				Var storage is part of the call frame.
- * VAR_TRACE_ACTIVE -		1 means that trace processing is currently
- *				underway for a read or write access, so
- *				new read or write accesses should not cause
- *				trace procedures to be called and the
- *				variable can't be deleted.
+ *				the Var structure is malloced. 0 if it is a
+ *				local variable that was assigned a slot in a
+ *				procedure frame by the compiler so the Var
+ *				storage is part of the call frame.
+ * VAR_DEAD_HASH		1 means that this var's entry in the hashtable
+ *				has already been deleted.
  * VAR_ARRAY_ELEMENT -		1 means that this variable is an array
- *				element, so it is not legal for it to be
- *				an array itself (the VAR_ARRAY flag had
- *				better not be set).
- * VAR_NAMESPACE_VAR -		1 means that this variable was declared
- *				as a namespace variable. This flag ensures
- *				it persists until its namespace is
- *				destroyed or until the variable is unset;
- *				it will persist even if it has not been
- *				initialized and is marked undefined.
- *				The variable's refCount is incremented to
- *				reflect the "reference" from its namespace.
+ *				element, so it is not legal for it to be an
+ *				array itself (the VAR_ARRAY flag had better
+ *				not be set).
+ * VAR_NAMESPACE_VAR -		1 means that this variable was declared as a
+ *				namespace variable. This flag ensures it
+ *				persists until its namespace is destroyed or
+ *				until the variable is unset; it will persist
+ *				even if it has not been initialized and is
+ *				marked undefined. The variable's refCount is
+ *				incremented to reflect the "reference" from
+ *				its namespace.
+ *
+ * Flag values relating to the variable's trace and search status.
+ *
+ * VAR_TRACED_READ
+ * VAR_TRACED_WRITE
+ * VAR_TRACED_UNSET
+ * VAR_TRACED_ARRAY
+ * VAR_TRACE_ACTIVE -		1 means that trace processing is currently
+ *				underway for a read or write access, so new
+ *				read or write accesses should not cause trace
+ *				procedures to be called and the variable can't
+ *				be deleted.
+ * VAR_SEARCH_ACTIVE
  *
- * The following additional flags are used with the CompiledLocal type
- * defined below:
+ * The following additional flags are used with the CompiledLocal type defined
+ * below:
  *
  * VAR_ARGUMENT -		1 means that this variable holds a procedure
- *				argument. 
+ *				argument.
  * VAR_TEMPORARY -		1 if the local variable is an anonymous
  *				temporary variable. Temporaries have a NULL
  *				name.
  * VAR_RESOLVED -		1 if name resolution has been done for this
  *				variable.
+ * VAR_IS_ARGS			1 if this variable is the last argument and is
+ *				named "args".
  */
 
-#define VAR_SCALAR		0x1
-#define VAR_ARRAY		0x2
-#define VAR_LINK		0x4
-#define VAR_UNDEFINED		0x8
-#define VAR_IN_HASHTABLE	0x10
-#define VAR_TRACE_ACTIVE	0x20
-#define VAR_ARRAY_ELEMENT	0x40
-#define VAR_NAMESPACE_VAR	0x80
+/*
+ * FLAGS RENUMBERED: everything breaks already, make things simpler.
+ *
+ * IMPORTANT: skip the values 0x10, 0x20, 0x40, 0x800 corresponding to
+ * TCL_TRACE_(READS/WRITES/UNSETS/ARRAY): makes code simpler in tclTrace.c
+ *
+ * Keep the flag values for VAR_ARGUMENT and VAR_TEMPORARY so that old values
+ * in precompiled scripts keep working.
+ */
+
+/* Type of value (0 is scalar) */
+#define VAR_ARRAY		0x1
+#define VAR_LINK		0x2
+
+/* Type of storage (0 is compiled local) */
+#define VAR_IN_HASHTABLE	0x4
+#define VAR_DEAD_HASH		0x8
+#define VAR_ARRAY_ELEMENT	0x1000
+#define VAR_NAMESPACE_VAR	0x80	/* KEEP OLD VALUE for Itcl */
+
+#define VAR_ALL_HASH \
+	(VAR_IN_HASHTABLE|VAR_DEAD_HASH|VAR_NAMESPACE_VAR|VAR_ARRAY_ELEMENT)
+
+/* Trace and search state. */
 
-#define VAR_ARGUMENT		0x100
-#define VAR_TEMPORARY		0x200
-#define VAR_RESOLVED		0x400	
+#define VAR_TRACED_READ		0x10	/* TCL_TRACE_READS */
+#define VAR_TRACED_WRITE	0x20	/* TCL_TRACE_WRITES */
+#define VAR_TRACED_UNSET	0x40	/* TCL_TRACE_UNSETS */
+#define VAR_TRACED_ARRAY	0x800	/* TCL_TRACE_ARRAY */
+#define VAR_TRACE_ACTIVE	0x2000
+#define VAR_SEARCH_ACTIVE	0x4000
+#define VAR_ALL_TRACES \
+	(VAR_TRACED_READ|VAR_TRACED_WRITE|VAR_TRACED_ARRAY|VAR_TRACED_UNSET)
+
+/* Special handling on initialisation (only CompiledLocal). */
+#define VAR_ARGUMENT		0x100	/* KEEP OLD VALUE! See tclProc.c */
+#define VAR_TEMPORARY		0x200	/* KEEP OLD VALUE! See tclProc.c */
+#define VAR_IS_ARGS		0x400
+#define VAR_RESOLVED		0x8000
 
 /*
  * Macros to ensure that various flag bits are set properly for variables.
  * The ANSI C "prototypes" for these macros are:
  *
- * EXTERN void	TclSetVarScalar _ANSI_ARGS_((Var *varPtr));
- * EXTERN void	TclSetVarArray _ANSI_ARGS_((Var *varPtr));
- * EXTERN void	TclSetVarLink _ANSI_ARGS_((Var *varPtr));
- * EXTERN void	TclSetVarArrayElement _ANSI_ARGS_((Var *varPtr));
- * EXTERN void	TclSetVarUndefined _ANSI_ARGS_((Var *varPtr));
- * EXTERN void	TclClearVarUndefined _ANSI_ARGS_((Var *varPtr));
+ * MODULE_SCOPE void	TclSetVarScalar(Var *varPtr);
+ * MODULE_SCOPE void	TclSetVarArray(Var *varPtr);
+ * MODULE_SCOPE void	TclSetVarLink(Var *varPtr);
+ * MODULE_SCOPE void	TclSetVarArrayElement(Var *varPtr);
+ * MODULE_SCOPE void	TclSetVarUndefined(Var *varPtr);
+ * MODULE_SCOPE void	TclClearVarUndefined(Var *varPtr);
  */
 
 #define TclSetVarScalar(varPtr) \
-    (varPtr)->flags = ((varPtr)->flags & ~(VAR_ARRAY|VAR_LINK)) | VAR_SCALAR
+    (varPtr)->flags &= ~(VAR_ARRAY|VAR_LINK)
 
 #define TclSetVarArray(varPtr) \
-    (varPtr)->flags = ((varPtr)->flags & ~(VAR_SCALAR|VAR_LINK)) | VAR_ARRAY
+    (varPtr)->flags = ((varPtr)->flags & ~VAR_LINK) | VAR_ARRAY
 
 #define TclSetVarLink(varPtr) \
-    (varPtr)->flags = ((varPtr)->flags & ~(VAR_SCALAR|VAR_ARRAY)) | VAR_LINK
+    (varPtr)->flags = ((varPtr)->flags & ~VAR_ARRAY) | VAR_LINK
 
 #define TclSetVarArrayElement(varPtr) \
     (varPtr)->flags = ((varPtr)->flags & ~VAR_ARRAY) | VAR_ARRAY_ELEMENT
 
 #define TclSetVarUndefined(varPtr) \
-    (varPtr)->flags |= VAR_UNDEFINED
+    (varPtr)->flags &= ~(VAR_ARRAY|VAR_LINK);\
+    (varPtr)->value.objPtr = NULL
+
+#define TclClearVarUndefined(varPtr)
+
+#define TclSetVarTraceActive(varPtr) \
+    (varPtr)->flags |= VAR_TRACE_ACTIVE
+
+#define TclClearVarTraceActive(varPtr) \
+    (varPtr)->flags &= ~VAR_TRACE_ACTIVE
 
-#define TclClearVarUndefined(varPtr) \
-    (varPtr)->flags &= ~VAR_UNDEFINED
+#define TclSetVarNamespaceVar(varPtr) \
+    if (!TclIsVarNamespaceVar(varPtr)) {\
+	(varPtr)->flags |= VAR_NAMESPACE_VAR;\
+	if (TclIsVarInHash(varPtr)) {\
+	    ((VarInHash *)(varPtr))->refCount++;\
+	}\
+    }
+
+#define TclClearVarNamespaceVar(varPtr) \
+    if (TclIsVarNamespaceVar(varPtr)) {\
+	(varPtr)->flags &= ~VAR_NAMESPACE_VAR;\
+	if (TclIsVarInHash(varPtr)) {\
+	    ((VarInHash *)(varPtr))->refCount--;\
+	}\
+    }
 
 /*
  * Macros to read various flag bits of variables.
  * The ANSI C "prototypes" for these macros are:
  *
- * EXTERN int	TclIsVarScalar _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarLink _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarArray _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarUndefined _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarArrayElement _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarTemporary _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarArgument _ANSI_ARGS_((Var *varPtr));
- * EXTERN int	TclIsVarResolved _ANSI_ARGS_((Var *varPtr));
- */
-    
+ * MODULE_SCOPE int	TclIsVarScalar(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarLink(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarArray(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarUndefined(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarArrayElement(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarTemporary(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarArgument(Var *varPtr);
+ * MODULE_SCOPE int	TclIsVarResolved(Var *varPtr);
+ */
+
 #define TclIsVarScalar(varPtr) \
-    ((varPtr)->flags & VAR_SCALAR)
+    !((varPtr)->flags & (VAR_ARRAY|VAR_LINK))
 
 #define TclIsVarLink(varPtr) \
     ((varPtr)->flags & VAR_LINK)
@@ -586,24 +706,74 @@ typedef struct Var {
     ((varPtr)->flags & VAR_ARRAY)
 
 #define TclIsVarUndefined(varPtr) \
-    ((varPtr)->flags & VAR_UNDEFINED)
+    ((varPtr)->value.objPtr == NULL)
 
 #define TclIsVarArrayElement(varPtr) \
     ((varPtr)->flags & VAR_ARRAY_ELEMENT)
 
+#define TclIsVarNamespaceVar(varPtr) \
+    ((varPtr)->flags & VAR_NAMESPACE_VAR)
+
 #define TclIsVarTemporary(varPtr) \
     ((varPtr)->flags & VAR_TEMPORARY)
-    
+
 #define TclIsVarArgument(varPtr) \
     ((varPtr)->flags & VAR_ARGUMENT)
-    
+
 #define TclIsVarResolved(varPtr) \
     ((varPtr)->flags & VAR_RESOLVED)
 
+#define TclIsVarTraceActive(varPtr) \
+    ((varPtr)->flags & VAR_TRACE_ACTIVE)
+
+#define TclIsVarTraced(varPtr) \
+    ((varPtr)->flags & VAR_ALL_TRACES)
+
+#define TclIsVarInHash(varPtr) \
+    ((varPtr)->flags & VAR_IN_HASHTABLE)
+
+#define TclIsVarDeadHash(varPtr) \
+    ((varPtr)->flags & VAR_DEAD_HASH)
+
+#define TclGetVarNsPtr(varPtr) \
+    (TclIsVarInHash(varPtr) \
+	? ((TclVarHashTable *) ((((VarInHash *) (varPtr))->entry.tablePtr)))->nsPtr \
+	: NULL)
+
+#define VarHashRefCount(varPtr) \
+    ((VarInHash *) (varPtr))->refCount
+
+/*
+ * Macros for direct variable access by TEBC.
+ */
+
+#define TclIsVarDirectReadable(varPtr) \
+    (   !((varPtr)->flags & (VAR_ARRAY|VAR_LINK|VAR_TRACED_READ)) \
+    &&  (varPtr)->value.objPtr)
+
+#define TclIsVarDirectWritable(varPtr) \
+    !((varPtr)->flags & (VAR_ARRAY|VAR_LINK|VAR_TRACED_WRITE|VAR_DEAD_HASH))
+
+#define TclIsVarDirectModifyable(varPtr) \
+    (   !((varPtr)->flags & (VAR_ARRAY|VAR_LINK|VAR_TRACED_READ|VAR_TRACED_WRITE)) \
+    &&  (varPtr)->value.objPtr)
+
+#define TclIsVarDirectReadable2(varPtr, arrayPtr) \
+    (TclIsVarDirectReadable(varPtr) &&\
+	(!(arrayPtr) || !((arrayPtr)->flags & VAR_TRACED_READ)))
+
+#define TclIsVarDirectWritable2(varPtr, arrayPtr) \
+    (TclIsVarDirectWritable(varPtr) &&\
+	(!(arrayPtr) || !((arrayPtr)->flags & VAR_TRACED_WRITE)))
+
+#define TclIsVarDirectModifyable2(varPtr, arrayPtr) \
+    (TclIsVarDirectModifyable(varPtr) &&\
+	(!(arrayPtr) || !((arrayPtr)->flags & (VAR_TRACED_READ|VAR_TRACED_WRITE))))
+
 /*
  *----------------------------------------------------------------
- * Data structures related to procedures.  These are used primarily
- * in tclProc.c, tclCompile.c, and tclExecute.c.
+ * Data structures related to procedures. These are used primarily in
+ * tclProc.c, tclCompile.c, and tclExecute.c.
  *----------------------------------------------------------------
  */
 
@@ -616,32 +786,31 @@ struct Command;
 
 /*
  * The variable-length structure below describes a local variable of a
- * procedure that was recognized by the compiler. These variables have a
- * name, an element in the array of compiler-assigned local variables in the
+ * procedure that was recognized by the compiler. These variables have a name,
+ * an element in the array of compiler-assigned local variables in the
  * procedure's call frame, and various other items of information. If the
- * local variable is a formal argument, it may also have a default value.
- * The compiler can't recognize local variables whose names are
- * expressions (these names are only known at runtime when the expressions
- * are evaluated) or local variables that are created as a result of an
- * "upvar" or "uplevel" command. These other local variables are kept
- * separately in a hash table in the call frame.
+ * local variable is a formal argument, it may also have a default value. The
+ * compiler can't recognize local variables whose names are expressions (these
+ * names are only known at runtime when the expressions are evaluated) or
+ * local variables that are created as a result of an "upvar" or "uplevel"
+ * command. These other local variables are kept separately in a hash table in
+ * the call frame.
  */
 
 typedef struct CompiledLocal {
     struct CompiledLocal *nextPtr;
-				/* Next compiler-recognized local variable
-				 * for this procedure, or NULL if this is
-				 * the last local. */
+				/* Next compiler-recognized local variable for
+				 * this procedure, or NULL if this is the last
+				 * local. */
     int nameLength;		/* The number of characters in local
-				 * variable's name. Used to speed up
-				 * variable lookups. */
+				 * variable's name. Used to speed up variable
+				 * lookups. */
     int frameIndex;		/* Index in the array of compiler-assigned
 				 * variables in the procedure call frame. */
     int flags;			/* Flag bits for the local variable. Same as
 				 * the flags for the Var structure above,
-				 * although only VAR_SCALAR, VAR_ARRAY, 
-				 * VAR_LINK, VAR_ARGUMENT, VAR_TEMPORARY, and
-				 * VAR_RESOLVED make sense. */
+				 * although only VAR_ARGUMENT, VAR_TEMPORARY,
+				 * and VAR_RESOLVED make sense. */
     Tcl_Obj *defValuePtr;	/* Pointer to the default value of an
 				 * argument, if any. NULL if not an argument
 				 * or, if an argument, no default value. */
@@ -649,277 +818,306 @@ typedef struct CompiledLocal {
 				/* Customized variable resolution info
 				 * supplied by the Tcl_ResolveCompiledVarProc
 				 * associated with a namespace. Each variable
-				 * is marked by a unique ClientData tag
-				 * during compilation, and that same tag
-				 * is used to find the variable at runtime. */
-    char name[4];		/* Name of the local variable starts here.
-				 * If the name is NULL, this will just be
-				 * '\0'. The actual size of this field will
-				 * be large enough to hold the name. MUST
-				 * BE THE LAST FIELD IN THE STRUCTURE! */
+				 * is marked by a unique ClientData tag during
+				 * compilation, and that same tag is used to
+				 * find the variable at runtime. */
+    char name[4];		/* Name of the local variable starts here. If
+				 * the name is NULL, this will just be '\0'.
+				 * The actual size of this field will be large
+				 * enough to hold the name. MUST BE THE LAST
+				 * FIELD IN THE STRUCTURE! */
 } CompiledLocal;
 
 /*
  * The structure below defines a command procedure, which consists of a
- * collection of Tcl commands plus information about arguments and other
- * local variables recognized at compile time.
+ * collection of Tcl commands plus information about arguments and other local
+ * variables recognized at compile time.
  */
 
 typedef struct Proc {
-    struct Interp *iPtr;	  /* Interpreter for which this command
-				   * is defined. */
-    int refCount;		  /* Reference count: 1 if still present
-				   * in command table plus 1 for each call
-				   * to the procedure that is currently
-				   * active. This structure can be freed
-				   * when refCount becomes zero. */
-    struct Command *cmdPtr;	  /* Points to the Command structure for
-				   * this procedure. This is used to get
-				   * the namespace in which to execute
-				   * the procedure. */
-    Tcl_Obj *bodyPtr;		  /* Points to the ByteCode object for
-				   * procedure's body command. */
-    int numArgs;		  /* Number of formal parameters. */
-    int numCompiledLocals;	  /* Count of local variables recognized by
-				   * the compiler including arguments and
-				   * temporaries. */
-    CompiledLocal *firstLocalPtr; /* Pointer to first of the procedure's
-				   * compiler-allocated local variables, or
-				   * NULL if none. The first numArgs entries
-				   * in this list describe the procedure's
-				   * formal arguments. */
-    CompiledLocal *lastLocalPtr;  /* Pointer to the last allocated local
-				   * variable or NULL if none. This has
-				   * frame index (numCompiledLocals-1). */
+    struct Interp *iPtr;	/* Interpreter for which this command is
+				 * defined. */
+    int refCount;		/* Reference count: 1 if still present in
+				 * command table plus 1 for each call to the
+				 * procedure that is currently active. This
+				 * structure can be freed when refCount
+				 * becomes zero. */
+    struct Command *cmdPtr;	/* Points to the Command structure for this
+				 * procedure. This is used to get the
+				 * namespace in which to execute the
+				 * procedure. */
+    Tcl_Obj *bodyPtr;		/* Points to the ByteCode object for
+				 * procedure's body command. */
+    int numArgs;		/* Number of formal parameters. */
+    int numCompiledLocals;	/* Count of local variables recognized by the
+				 * compiler including arguments and
+				 * temporaries. */
+    CompiledLocal *firstLocalPtr;
+				/* Pointer to first of the procedure's
+				 * compiler-allocated local variables, or NULL
+				 * if none. The first numArgs entries in this
+				 * list describe the procedure's formal
+				 * arguments. */
+    CompiledLocal *lastLocalPtr;/* Pointer to the last allocated local
+				 * variable or NULL if none. This has frame
+				 * index (numCompiledLocals-1). */
 } Proc;
 
 /*
- * The structure below defines a command trace.	 This is used to allow Tcl
+ * The type of functions called to process errors found during the execution
+ * of a procedure (or lambda term or ...).
+ */
+
+typedef void (*ProcErrorProc)(Tcl_Interp *interp, Tcl_Obj *procNameObj);
+
+/*
+ * The structure below defines a command trace. This is used to allow Tcl
  * clients to find out whenever a command is about to be executed.
  */
 
 typedef struct Trace {
-    int level;			/* Only trace commands at nesting level
-				 * less than or equal to this. */
+    int level;			/* Only trace commands at nesting level less
+				 * than or equal to this. */
     Tcl_CmdObjTraceProc *proc;	/* Procedure to call to trace command. */
     ClientData clientData;	/* Arbitrary value to pass to proc. */
     struct Trace *nextPtr;	/* Next in list of traces for this interp. */
     int flags;			/* Flags governing the trace - see
-				 * Tcl_CreateObjTrace for details */
-    Tcl_CmdObjTraceDeleteProc* delProc;
-				/* Procedure to call when trace is deleted */
+				 * Tcl_CreateObjTrace for details. */
+    Tcl_CmdObjTraceDeleteProc *delProc;
+				/* Procedure to call when trace is deleted. */
 } Trace;
 
 /*
- * When an interpreter trace is active (i.e. its associated procedure
- * is executing), one of the following structures is linked into a list
- * associated with the interpreter.  The information in the structure
- * is needed in order for Tcl to behave reasonably if traces are
- * deleted while traces are active.
+ * When an interpreter trace is active (i.e. its associated procedure is
+ * executing), one of the following structures is linked into a list
+ * associated with the interpreter. The information in the structure is needed
+ * in order for Tcl to behave reasonably if traces are deleted while traces
+ * are active.
  */
 
 typedef struct ActiveInterpTrace {
     struct ActiveInterpTrace *nextPtr;
-				/* Next in list of all active command
-				 * traces for the interpreter, or NULL
-				 * if no more. */
-    Trace *nextTracePtr;	/* Next trace to check after current
-				 * trace procedure returns;  if this
-				 * trace gets deleted, must update pointer
-				 * to avoid using free'd memory. */
-    int reverseScan;		/* Boolean set true when the traces
-				 * are scanning in reverse order. */
+				/* Next in list of all active command traces
+				 * for the interpreter, or NULL if no more. */
+    Trace *nextTracePtr;	/* Next trace to check after current trace
+				 * procedure returns; if this trace gets
+				 * deleted, must update pointer to avoid using
+				 * free'd memory. */
+    int reverseScan;		/* Boolean set true when traces are scanning
+				 * in reverse order. */
 } ActiveInterpTrace;
 
 /*
- * The structure below defines an entry in the assocData hash table which
- * is associated with an interpreter. The entry contains a pointer to a
- * function to call when the interpreter is deleted, and a pointer to
- * a user-defined piece of data.
+ * Flag values designating types of execution traces. See tclTrace.c for
+ * related flag values.
+ *
+ * TCL_TRACE_ENTER_EXEC		- triggers enter/enterstep traces.
+ * 				- passed to Tcl_CreateObjTrace to set up
+ *				  "enterstep" traces.
+ * TCL_TRACE_LEAVE_EXEC		- triggers leave/leavestep traces.
+ * 				- passed to Tcl_CreateObjTrace to set up
+ *				  "leavestep" traces.
+ */
+
+#define TCL_TRACE_ENTER_EXEC	1
+#define TCL_TRACE_LEAVE_EXEC	2
+
+/*
+ * The structure below defines an entry in the assocData hash table which is
+ * associated with an interpreter. The entry contains a pointer to a function
+ * to call when the interpreter is deleted, and a pointer to a user-defined
+ * piece of data.
  */
 
 typedef struct AssocData {
     Tcl_InterpDeleteProc *proc;	/* Proc to call when deleting. */
     ClientData clientData;	/* Value to pass to proc. */
-} AssocData;	
+} AssocData;
 
 /*
  * The structure below defines a call frame. A call frame defines a naming
- * context for a procedure call: its local naming scope (for local
- * variables) and its global naming scope (a namespace, perhaps the global
- * :: namespace). A call frame can also define the naming context for a
- * namespace eval or namespace inscope command: the namespace in which the
- * command's code should execute. The Tcl_CallFrame structures exist only
- * while procedures or namespace eval/inscope's are being executed, and
- * provide a kind of Tcl call stack.
- * 
+ * context for a procedure call: its local naming scope (for local variables)
+ * and its global naming scope (a namespace, perhaps the global :: namespace).
+ * A call frame can also define the naming context for a namespace eval or
+ * namespace inscope command: the namespace in which the command's code should
+ * execute. The Tcl_CallFrame structures exist only while procedures or
+ * namespace eval/inscope's are being executed, and provide a kind of Tcl call
+ * stack.
+ *
  * WARNING!! The structure definition must be kept consistent with the
  * Tcl_CallFrame structure in tcl.h. If you change one, change the other.
  */
 
+/*
+ * Will be grown to contain: pointers to the varnames (allocated at the end),
+ * plus the init values for each variable (suitable to be memcopied on init)
+ */
+
+typedef struct LocalCache {
+    int refCount;
+    int numVars;
+    Tcl_Obj *varName0;
+} LocalCache;
+
+#define localName(framePtr, i) \
+    ((&((framePtr)->localCachePtr->varName0))[(i)])
+
+MODULE_SCOPE void	TclFreeLocalCache(Tcl_Interp *interp,
+			    LocalCache *localCachePtr);
+
 typedef struct CallFrame {
     Namespace *nsPtr;		/* Points to the namespace used to resolve
 				 * commands and global variables. */
-    int isProcCallFrame;	/* If nonzero, the frame was pushed to
-				 * execute a Tcl procedure and may have
-				 * local vars. If 0, the frame was pushed
-				 * to execute a namespace command and var
-				 * references are treated as references to
-				 * namespace vars; varTablePtr and
-				 * compiledLocals are ignored. */
-    int objc;			/* This and objv below describe the
-				 * arguments for this procedure call. */
-    Tcl_Obj *CONST *objv;	/* Array of argument objects. */
+    int isProcCallFrame;	/* If 0, the frame was pushed to execute a
+				 * namespace command and var references are
+				 * treated as references to namespace vars;
+				 * varTablePtr and compiledLocals are ignored.
+				 * If FRAME_IS_PROC is set, the frame was
+				 * pushed to execute a Tcl procedure and may
+				 * have local vars. */
+    int objc;			/* This and objv below describe the arguments
+				 * for this procedure call. */
+    Tcl_Obj *const *objv;	/* Array of argument objects. */
     struct CallFrame *callerPtr;
 				/* Value of interp->framePtr when this
-				 * procedure was invoked (i.e. next higher
-				 * in stack of all active procedures). */
+				 * procedure was invoked (i.e. next higher in
+				 * stack of all active procedures). */
     struct CallFrame *callerVarPtr;
 				/* Value of interp->varFramePtr when this
 				 * procedure was invoked (i.e. determines
-				 * variable scoping within caller). Same
-				 * as callerPtr unless an "uplevel" command
-				 * or something equivalent was active in
-				 * the caller). */
+				 * variable scoping within caller). Same as
+				 * callerPtr unless an "uplevel" command or
+				 * something equivalent was active in the
+				 * caller). */
     int level;			/* Level of this procedure, for "uplevel"
 				 * purposes (i.e. corresponds to nesting of
 				 * callerVarPtr's, not callerPtr's). 1 for
 				 * outermost procedure, 0 for top-level. */
-    Proc *procPtr;		/* Points to the structure defining the
-				 * called procedure. Used to get information
-				 * such as the number of compiled local
-				 * variables (local variables assigned
-				 * entries ["slots"] in the compiledLocals
-				 * array below). */
-    Tcl_HashTable *varTablePtr;	/* Hash table containing local variables not
+    Proc *procPtr;		/* Points to the structure defining the called
+				 * procedure. Used to get information such as
+				 * the number of compiled local variables
+				 * (local variables assigned entries ["slots"]
+				 * in the compiledLocals array below). */
+    TclVarHashTable *varTablePtr;
+				/* Hash table containing local variables not
 				 * recognized by the compiler, or created at
 				 * execution time through, e.g., upvar.
 				 * Initially NULL and created if needed. */
-    int numCompiledLocals;	/* Count of local variables recognized by
-				 * the compiler including arguments. */
-    Var* compiledLocals;	/* Points to the array of local variables
+    int numCompiledLocals;	/* Count of local variables recognized by the
+				 * compiler including arguments. */
+    Var *compiledLocals;	/* Points to the array of local variables
 				 * recognized by the compiler. The compiler
 				 * emits code that refers to these variables
 				 * using an index into this array. */
+    ClientData clientData;	/* Pointer to some context that is used by
+				 * object systems. The meaning of the contents
+				 * of this field is defined by the code that
+				 * sets it, and it should only ever be set by
+				 * the code that is pushing the frame. In that
+				 * case, the code that sets it should also
+				 * have some means of discovering what the
+				 * meaning of the value is, which we do not
+				 * specify. */
+    LocalCache *localCachePtr;
 } CallFrame;
 
-#ifdef TCL_TIP280
+#define FRAME_IS_PROC	0x1
+#define FRAME_IS_LAMBDA 0x2
+
 /*
  * TIP #280
- * The structure below defines a command frame. A command frame
- * provides location information for all commands executing a tcl
- * script (source, eval, uplevel, procedure bodies, ...). The runtime
- * structure essentially contains the stack trace as it would be if
- * the currently executing command were to throw an error.
+ * The structure below defines a command frame. A command frame provides
+ * location information for all commands executing a tcl script (source, eval,
+ * uplevel, procedure bodies, ...). The runtime structure essentially contains
+ * the stack trace as it would be if the currently executing command were to
+ * throw an error.
  *
- * For commands where it makes sense it refers to the associated
- * CallFrame as well.
+ * For commands where it makes sense it refers to the associated CallFrame as
+ * well.
  *
- * The structures are chained in a single list, with the top of the
- * stack anchored in the Interp structure.
+ * The structures are chained in a single list, with the top of the stack
+ * anchored in the Interp structure.
  *
- * Instances can be allocated on the C stack, or the heap, the former
- * making cleanup a bit simpler.
+ * Instances can be allocated on the C stack, or the heap, the former making
+ * cleanup a bit simpler.
  */
 
 typedef struct CmdFrame {
-  /* General data. Always available. */
-
-  int              type;     /* Values see below */
-  int              level;    /* #Frames in stack, prevent O(n) scan of list */
-  int*             line;     /* Lines the words of the command start on */
-  int              nline;
-
-  CallFrame*       framePtr; /* Procedure activation record, may be NULL */
-  struct CmdFrame* nextPtr;  /* Link to calling frame */
-
-  /* Data needed for Eval vs TEBC
-   *
-   * EXECUTION CONTEXTS and usage of CmdFrame
-   *
-   * Field      TEBC            EvalEx          EvalObjEx
-   * =======    ====            ======          =========
-   * level      yes             yes             yes
-   * type       BC/PREBC        SRC/EVAL        EVAL_LIST
-   * line0      yes             yes             yes
-   * framePtr   yes             yes             yes
-   * =======    ====            ======          =========
-   *
-   * =======    ====            ======          ========= union data
-   * line1      -               yes             -
-   * line3      -               yes             -
-   * path       -               yes             -
-   * -------    ----            ------          ---------
-   * codePtr    yes             -               -
-   * pc         yes             -               -
-   * =======    ====            ======          =========
-   *
-   * =======    ====            ======          ========= | union cmd
-   * listPtr    -               -               yes       |
-   * -------    ----            ------          --------- |
-   * cmd        yes             yes             -         |
-   * cmdlen     yes             yes             -         |
-   * -------    ----            ------          --------- |
-   */
-
-  union {
-    struct {
-      Tcl_Obj*     path;     /* Path of the sourced file the command
-			      * is in. */
-    } eval;
-    struct {
-      CONST void*  codePtr;  /* Byte code currently executed */
-      CONST char*  pc;       /* and instruction pointer.     */
-    } tebc;
-  } data;
+    /*
+     * General data. Always available.
+     */
 
-  union {
-    struct {
-      CONST char*  cmd;      /* The executed command, if possible */
-      int          len;      /* And its length */
-    } str;
-    Tcl_Obj*       listPtr;  /* Tcl_EvalObjEx, cmd list */
-  } cmd;
+    int type;			/* Values see below. */
+    int level;			/* Number of frames in stack, prevent O(n)
+				 * scan of list. */
+    int *line;			/* Lines the words of the command start on. */
+    int nline;
+    CallFrame *framePtr;	/* Procedure activation record, may be
+				 * NULL. */
+    struct CmdFrame *nextPtr;	/* Link to calling frame. */
+    /*
+     * Data needed for Eval vs TEBC
+     *
+     * EXECUTION CONTEXTS and usage of CmdFrame
+     *
+     * Field	  TEBC		  EvalEx	  EvalObjEx
+     * =======	  ====		  ======	  =========
+     * level	  yes		  yes		  yes
+     * type	  BC/PREBC	  SRC/EVAL	  EVAL_LIST
+     * line0	  yes		  yes		  yes
+     * framePtr	  yes		  yes		  yes
+     * =======	  ====		  ======	  =========
+     *
+     * =======	  ====		  ======	  ========= union data
+     * line1	  -		  yes		  -
+     * line3	  -		  yes		  -
+     * path	  -		  yes		  -
+     * -------	  ----		  ------	  ---------
+     * codePtr	  yes		  -		  -
+     * pc	  yes		  -		  -
+     * =======	  ====		  ======	  =========
+     *
+     * =======	  ====		  ======	  ========= | union cmd
+     * listPtr	  -		  -		  yes	    |
+     * -------	  ----		  ------	  --------- |
+     * cmd	  yes		  yes		  -	    |
+     * cmdlen	  yes		  yes		  -	    |
+     * -------	  ----		  ------	  --------- |
+     */
 
+    union {
+	struct {
+	    Tcl_Obj *path;	/* Path of the sourced file the command is
+				 * in. */
+	} eval;
+	struct {
+	    const void *codePtr;/* Byte code currently executed... */
+	    const char *pc;	/* ... and instruction pointer. */
+	} tebc;
+    } data;
+    union {
+	struct {
+	    const char *cmd;	/* The executed command, if possible... */
+	    int len;		/* ... and its length. */
+	} str;
+	Tcl_Obj *listPtr;	/* Tcl_EvalObjEx, cmd list. */
+    } cmd;
 } CmdFrame;
 
-/* The following macros define the allowed values for the type field
- * of the CmdFrame structure above. Some of the values occur only in
- * the extended location data referenced via the 'baseLocPtr'.
- *
- * TCL_LOCATION_EVAL      : Frame is for a script evaluated by EvalEx.
- * TCL_LOCATION_EVAL_LIST : Frame is for a script evaluated by the list
- *                          optimization path of EvalObjEx.
- * TCL_LOCATION_BC        : Frame is for bytecode. 
- * TCL_LOCATION_PREBC     : Frame is for precompiled bytecode.
- * TCL_LOCATION_SOURCE    : Frame is for a script evaluated by EvalEx,
- *                          from a sourced file.
- * TCL_LOCATION_PROC      : Frame is for bytecode of a procedure.
- *
- * A TCL_LOCATION_BC type in a frame can be overridden by _SOURCE and
- * _PROC types, per the context of the byte code in execution.
- */
-
-#define TCL_LOCATION_EVAL      (0) /* Location in a dynamic eval script */
-#define TCL_LOCATION_EVAL_LIST (1) /* Location in a dynamic eval script, list-path */
-#define TCL_LOCATION_BC        (2) /* Location in byte code */
-#define TCL_LOCATION_PREBC     (3) /* Location in precompiled byte code, no location */
-#define TCL_LOCATION_SOURCE    (4) /* Location in a file */
-#define TCL_LOCATION_PROC      (5) /* Location in a dynamic proc */
-
-#define TCL_LOCATION_LAST      (6) /* Number of values in the enum */
-
 typedef struct CFWord {
-  CmdFrame* framePtr;  /* CmdFrame to acess */
-  int       word;      /* Index of the word in the command */
-  int       refCount;  /* #times the word is on the stack */
+    CmdFrame *framePtr;		/* CmdFrame to access. */
+    int word;			/* Index of the word in the command. */
+    int refCount;		/* Number of times the word is on the
+				 * stack. */
 } CFWord;
 
 typedef struct CFWordBC {
-    CmdFrame* framePtr;  /* CmdFrame to acess */
-    int pc;   /* Instruction pointer of a command in ExtCmdLoc.loc[.] */
-    int word; /* Index of word in ExtCmdLoc.loc[cmd]->{line,literal}[.] */
-    struct CFWordBC* prevPtr;
+    CmdFrame *framePtr;		/* CmdFrame to access. */
+    int pc;			/* Instruction pointer of a command in
+				 * ExtCmdLoc.loc[.] */
+    int word;			/* Index of word in
+				 * ExtCmdLoc.loc[cmd]->line[.] */
+    struct CFWordBC *prevPtr;	/* Previous entry in stack for same Tcl_Obj. */
 } CFWordBC;
 
 /*
@@ -932,96 +1130,125 @@ typedef struct CFWordBC {
  * tracking.
  *
  * These structures are allocated and filled by both the function
- * EvalTokensStandard() in the file "tclBasic.c" and its caller EvalEx(), and
- * stored in the thread-global hashtable "lineCLPtr" in file "tclObj.c". They
- * are used by the functions TclSetByteCodeFromAny() and TclCompileScript(),
- * both found in the file "tclCompile.c". Their memory is released by the
- * function TclFreeObj(), in the file "tclObj.c", and also by the function
- * TclThreadFinalizeObjects(), in the same file.
+ * TclSubstTokens() in the file "tclParse.c" and its caller TclEvalEx() in the
+ * file "tclBasic.c", and stored in the thread-global hashtable "lineCLPtr" in
+ * file "tclObj.c". They are used by the functions TclSetByteCodeFromAny() and
+ * TclCompileScript(), both found in the file "tclCompile.c". Their memory is
+ * released by the function TclFreeObj(), in the file "tclObj.c", and also by
+ * the function TclThreadFinalizeObjects(), in the same file.
  */
 
-#define CLL_END (-1)
+#define CLL_END		(-1)
 
 typedef struct ContLineLoc {
-  int num;      /* Number of entries in loc, not counting the final -1
-		 * marker entry */
-  int loc[1];   /* Table of locations, as character offsets. The table is
-		 * allocated as part of the structure, i.e. the loc array
-		 * extends behind the nominal end of the structure. An entry
-		 * containing the value CLL_END is put after the last
-		 * location, as end-marker/sentinel. */
+    int num;			/* Number of entries in loc, not counting the
+				 * final -1 marker entry. */
+    int loc[1];			/* Table of locations, as character offsets.
+				 * The table is allocated as part of the
+				 * structure, extending behind the nominal end
+				 * of the structure. An entry containing the
+				 * value -1 is put after the last location, as
+				 * end-marker/sentinel. */
 } ContLineLoc;
 
-#endif /* TCL_TIP280 */
+/*
+ * The following macros define the allowed values for the type field of the
+ * CmdFrame structure above. Some of the values occur only in the extended
+ * location data referenced via the 'baseLocPtr'.
+ *
+ * TCL_LOCATION_EVAL	  : Frame is for a script evaluated by EvalEx.
+ * TCL_LOCATION_EVAL_LIST : Frame is for a script evaluated by the list
+ *			    optimization path of EvalObjEx.
+ * TCL_LOCATION_BC	  : Frame is for bytecode.
+ * TCL_LOCATION_PREBC	  : Frame is for precompiled bytecode.
+ * TCL_LOCATION_SOURCE	  : Frame is for a script evaluated by EvalEx, from a
+ *			    sourced file.
+ * TCL_LOCATION_PROC	  : Frame is for bytecode of a procedure.
+ *
+ * A TCL_LOCATION_BC type in a frame can be overridden by _SOURCE and _PROC
+ * types, per the context of the byte code in execution.
+ */
+
+#define TCL_LOCATION_EVAL	(0) /* Location in a dynamic eval script. */
+#define TCL_LOCATION_EVAL_LIST	(1) /* Location in a dynamic eval script,
+				     * list-path. */
+#define TCL_LOCATION_BC		(2) /* Location in byte code. */
+#define TCL_LOCATION_PREBC	(3) /* Location in precompiled byte code, no
+				     * location. */
+#define TCL_LOCATION_SOURCE	(4) /* Location in a file. */
+#define TCL_LOCATION_PROC	(5) /* Location in a dynamic proc. */
+#define TCL_LOCATION_LAST	(6) /* Number of values in the enum. */
+
+/*
+ * Structure passed to describe procedure-like "procedures" that are not
+ * procedures (e.g. a lambda) so that their details can be reported correctly
+ * by [info frame]. Contains a sub-structure for each extra field.
+ */
+
+typedef Tcl_Obj *(*GetFrameInfoValueProc)(ClientData clientData);
+typedef struct {
+    const char *name;		/* Name of this field. */
+    GetFrameInfoValueProc proc;	/* Function to generate a Tcl_Obj* from the
+				 * clientData, or just use the clientData
+				 * directly (after casting) if NULL. */
+    ClientData clientData;	/* Context for above function, or Tcl_Obj* if
+				 * proc field is NULL. */
+} ExtraFrameInfoField;
+typedef struct {
+    int length;			/* Length of array. */
+    ExtraFrameInfoField fields[2];
+				/* Really as long as necessary, but this is
+				 * long enough for nearly anything. */
+} ExtraFrameInfo;
 
 /*
  *----------------------------------------------------------------
- * Data structures and procedures related to TclHandles, which
- * are a very lightweight method of preserving enough information
- * to determine if an arbitrary malloc'd block has been deleted.
+ * Data structures and procedures related to TclHandles, which are a very
+ * lightweight method of preserving enough information to determine if an
+ * arbitrary malloc'd block has been deleted.
  *----------------------------------------------------------------
  */
 
-typedef VOID **TclHandle;
+typedef void **TclHandle;
 
 /*
  *----------------------------------------------------------------
- * Data structures related to expressions.  These are used only in
- * tclExpr.c.
+ * Experimental flag value passed to Tcl_GetRegExpFromObj. Intended for use
+ * only by Expect. It will probably go away in a later release.
  *----------------------------------------------------------------
  */
 
-/*
- * The data structure below defines a math function (e.g. sin or hypot)
- * for use in Tcl expressions.
- */
-
-#define MAX_MATH_ARGS 5
-typedef struct MathFunc {
-    int builtinFuncIndex;	/* If this is a builtin math function, its
-				 * index in the array of builtin functions.
-				 * (tclCompilation.h lists these indices.)
-				 * The value is -1 if this is a new function
-				 * defined by Tcl_CreateMathFunc. The value
-				 * is also -1 if a builtin function is
-				 * replaced by a Tcl_CreateMathFunc call. */
-    int numArgs;		/* Number of arguments for function. */
-    Tcl_ValueType argTypes[MAX_MATH_ARGS];
-				/* Acceptable types for each argument. */
-    Tcl_MathProc *proc;		/* Procedure that implements this function.
-				 * NULL if isBuiltinFunc is 1. */
-    ClientData clientData;	/* Additional argument to pass to the
-				 * function when invoking it. NULL if
-				 * isBuiltinFunc is 1. */
-} MathFunc;
+#define TCL_REG_BOSONLY 002000	/* Prepend \A to pattern so it only matches at
+				 * the beginning of the string. */
 
 /*
  * These are a thin layer over TclpThreadKeyDataGet and TclpThreadKeyDataSet
- * when threads are used, or an emulation if there are no threads.  These
- * are really internal and Tcl clients should use Tcl_GetThreadData.
+ * when threads are used, or an emulation if there are no threads. These are
+ * really internal and Tcl clients should use Tcl_GetThreadData.
  */
 
-EXTERN VOID *TclThreadDataKeyGet _ANSI_ARGS_((Tcl_ThreadDataKey *keyPtr));
-EXTERN void TclThreadDataKeySet _ANSI_ARGS_((Tcl_ThreadDataKey *keyPtr, VOID *data));
+MODULE_SCOPE void *	TclThreadDataKeyGet(Tcl_ThreadDataKey *keyPtr);
+MODULE_SCOPE void	TclThreadDataKeySet(Tcl_ThreadDataKey *keyPtr,
+			    void *data);
 
 /*
  * This is a convenience macro used to initialize a thread local storage ptr.
  */
-#define TCL_TSD_INIT(keyPtr)	(ThreadSpecificData *)Tcl_GetThreadData((keyPtr), sizeof(ThreadSpecificData))
 
+#define TCL_TSD_INIT(keyPtr) \
+  (ThreadSpecificData *)Tcl_GetThreadData((keyPtr), sizeof(ThreadSpecificData))
 
 /*
  *----------------------------------------------------------------
- * Data structures related to bytecode compilation and execution.
- * These are used primarily in tclCompile.c, tclExecute.c, and
- * tclBasic.c.
+ * Data structures related to bytecode compilation and execution. These are
+ * used primarily in tclCompile.c, tclExecute.c, and tclBasic.c.
  *----------------------------------------------------------------
  */
 
 /*
  * Forward declaration to prevent errors when the forward references to
- * Tcl_Parse and CompileEnv are encountered in the procedure type
- * CompileProc declared below.
+ * Tcl_Parse and CompileEnv are encountered in the procedure type CompileProc
+ * declared below.
  */
 
 struct CompileEnv;
@@ -1029,62 +1256,72 @@ struct CompileEnv;
 /*
  * The type of procedures called by the Tcl bytecode compiler to compile
  * commands. Pointers to these procedures are kept in the Command structure
- * describing each command. When a CompileProc returns, the interpreter's
- * result is set to error information, if any. In addition, the CompileProc
- * returns an integer value, which is one of the following:
+ * describing each command. The integer value returned by a CompileProc must
+ * be one of the following:
  *
  * TCL_OK		Compilation completed normally.
- * TCL_ERROR		Compilation failed because of an error;
- *			the interpreter's result describes what went wrong.
- * TCL_OUT_LINE_COMPILE	Compilation failed because, e.g., the command is
- *			too complex for effective inline compilation. The
- *			CompileProc believes the command is legal but 
- *			should be compiled "out of line" by emitting code
- *			to invoke its command procedure at runtime.
+ * TCL_ERROR 		Compilation could not be completed. This can be just a
+ * 			judgment by the CompileProc that the command is too
+ * 			complex to compile effectively, or it can indicate
+ * 			that in the current state of the interp, the command
+ * 			would raise an error. The bytecode compiler will not
+ * 			do any error reporting at compiler time. Error
+ * 			reporting is deferred until the actual runtime,
+ * 			because by then changes in the interp state may allow
+ * 			the command to be successfully evaluated.
+ * TCL_OUT_LINE_COMPILE	A source-compatible alias for TCL_ERROR, kept for the
+ * 			sake of old code only.
  */
 
-#define TCL_OUT_LINE_COMPILE	(TCL_CONTINUE + 1)
+#define TCL_OUT_LINE_COMPILE	TCL_ERROR
 
-typedef int (CompileProc) _ANSI_ARGS_((Tcl_Interp *interp,
-	Tcl_Parse *parsePtr, struct CompileEnv *compEnvPtr));
+typedef int (CompileProc)(Tcl_Interp *interp, Tcl_Parse *parsePtr,
+	struct Command *cmdPtr, struct CompileEnv *compEnvPtr);
 
 /*
  * The type of procedure called from the compilation hook point in
  * SetByteCodeFromAny.
  */
 
-typedef int (CompileHookProc) _ANSI_ARGS_((Tcl_Interp *interp,
-	struct CompileEnv *compEnvPtr, ClientData clientData));
+typedef int (CompileHookProc)(Tcl_Interp *interp,
+	struct CompileEnv *compEnvPtr, ClientData clientData);
+
+/*
+ * The data structure for a (linked list of) execution stacks.
+ */
+
+typedef struct ExecStack {
+    struct ExecStack *prevPtr;
+    struct ExecStack *nextPtr;
+    Tcl_Obj **markerPtr;
+    Tcl_Obj **endPtr;
+    Tcl_Obj **tosPtr;
+    Tcl_Obj *stackWords[1];
+} ExecStack;
 
 /*
  * The data structure defining the execution environment for ByteCode's.
- * There is one ExecEnv structure per Tcl interpreter. It holds the
- * evaluation stack that holds command operands and results. The stack grows
- * towards increasing addresses. The "stackTop" member is cached by
- * TclExecuteByteCode in a local variable: it must be set before calling
- * TclExecuteByteCode and will be restored by TclExecuteByteCode before it
- * returns.
+ * There is one ExecEnv structure per Tcl interpreter. It holds the evaluation
+ * stack that holds command operands and results. The stack grows towards
+ * increasing addresses. The member stackPtr points to the stackItems of the
+ * currently active execution stack.
  */
 
 typedef struct ExecEnv {
-    Tcl_Obj **stackPtr;		/* Points to the first item in the
-				 * evaluation stack on the heap. */
-    int stackTop;		/* Index of current top of stack; -1 when
-				 * the stack is empty. */
-    int stackEnd;		/* Index of last usable item in stack. */
-    Tcl_Obj *errorInfo;
-    Tcl_Obj *errorCode;
+    ExecStack *execStackPtr;	/* Points to the first item in the evaluation
+				 * stack on the heap. */
+    Tcl_Obj *constants[2];	/* Pointers to constant "0" and "1" objs. */
 } ExecEnv;
 
 /*
  * The definitions for the LiteralTable and LiteralEntry structures. Each
  * interpreter contains a LiteralTable. It is used to reduce the storage
  * needed for all the Tcl objects that hold the literals of scripts compiled
- * by the interpreter. A literal's object is shared by all the ByteCodes
- * that refer to the literal. Each distinct literal has one LiteralEntry
- * entry in the LiteralTable. A literal table is a specialized hash table
- * that is indexed by the literal's string representation, which may contain
- * null characters.
+ * by the interpreter. A literal's object is shared by all the ByteCodes that
+ * refer to the literal. Each distinct literal has one LiteralEntry entry in
+ * the LiteralTable. A literal table is a specialized hash table that is
+ * indexed by the literal's string representation, which may contain null
+ * characters.
  *
  * Note that we reduce the space needed for literals by sharing literal
  * objects both within a ByteCode (each ByteCode contains a local
@@ -1093,37 +1330,36 @@ typedef struct ExecEnv {
  */
 
 typedef struct LiteralEntry {
-    struct LiteralEntry *nextPtr;	/* Points to next entry in this
-					 * hash bucket or NULL if end of
-					 * chain. */
-    Tcl_Obj *objPtr;			/* Points to Tcl object that
-					 * holds the literal's bytes and
-					 * length. */
-    int refCount;			/* If in an interpreter's global
-					 * literal table, the number of
-					 * ByteCode structures that share
-					 * the literal object; the literal
-					 * entry can be freed when refCount
-					 * drops to 0. If in a local literal
-					 * table, -1. */
+    struct LiteralEntry *nextPtr;
+				/* Points to next entry in this hash bucket or
+				 * NULL if end of chain. */
+    Tcl_Obj *objPtr;		/* Points to Tcl object that holds the
+				 * literal's bytes and length. */
+    int refCount;		/* If in an interpreter's global literal
+				 * table, the number of ByteCode structures
+				 * that share the literal object; the literal
+				 * entry can be freed when refCount drops to
+				 * 0. If in a local literal table, -1. */
+    Namespace *nsPtr;		/* Namespace in which this literal is used. We
+				 * try to avoid sharing literal non-FQ command
+				 * names among different namespaces to reduce
+				 * shimmering. */
 } LiteralEntry;
 
 typedef struct LiteralTable {
-    LiteralEntry **buckets;		/* Pointer to bucket array. Each
-					 * element points to first entry in
-					 * bucket's hash chain, or NULL. */
+    LiteralEntry **buckets;	/* Pointer to bucket array. Each element
+				 * points to first entry in bucket's hash
+				 * chain, or NULL. */
     LiteralEntry *staticBuckets[TCL_SMALL_HASH_TABLE];
-					/* Bucket array used for small
-					 * tables to avoid mallocs and
-					 * frees. */
-    int numBuckets;			/* Total number of buckets allocated
-					 * at **buckets. */
-    int numEntries;			/* Total number of entries present
-					 * in table. */
-    int rebuildSize;			/* Enlarge table when numEntries
-					 * gets to be this large. */
-    int mask;				/* Mask value used in hashing
-					 * function. */
+				/* Bucket array used for small tables to avoid
+				 * mallocs and frees. */
+    int numBuckets;		/* Total number of buckets allocated at
+				 * **buckets. */
+    int numEntries;		/* Total number of entries present in
+				 * table. */
+    int rebuildSize;		/* Enlarge table when numEntries gets to be
+				 * this large. */
+    int mask;			/* Mask value used in hashing function. */
 } LiteralTable;
 
 /*
@@ -1134,36 +1370,49 @@ typedef struct LiteralTable {
 
 #ifdef TCL_COMPILE_STATS
 typedef struct ByteCodeStats {
-    long numExecutions;		  /* Number of ByteCodes executed. */
-    long numCompilations;	  /* Number of ByteCodes created. */
-    long numByteCodesFreed;	  /* Number of ByteCodes destroyed. */
-    long instructionCount[256];	  /* Number of times each instruction was
-				   * executed. */
-
-    double totalSrcBytes;	  /* Total source bytes ever compiled. */
-    double totalByteCodeBytes;	  /* Total bytes for all ByteCodes. */
-    double currentSrcBytes;	  /* Src bytes for all current ByteCodes. */
-    double currentByteCodeBytes;  /* Code bytes in all current ByteCodes. */
-
-    long srcCount[32];		  /* Source size distribution: # of srcs of
-				   * size [2**(n-1)..2**n), n in [0..32). */
-    long byteCodeCount[32];	  /* ByteCode size distribution. */
-    long lifetimeCount[32];	  /* ByteCode lifetime distribution (ms). */
-    
-    double currentInstBytes;	  /* Instruction bytes-current ByteCodes. */
-    double currentLitBytes;	  /* Current literal bytes. */
-    double currentExceptBytes;	  /* Current exception table bytes. */
-    double currentAuxBytes;	  /* Current auxiliary information bytes. */
-    double currentCmdMapBytes;	  /* Current src<->code map bytes. */
-    
-    long numLiteralsCreated;	  /* Total literal objects ever compiled. */
-    double totalLitStringBytes;	  /* Total string bytes in all literals. */
-    double currentLitStringBytes; /* String bytes in current literals. */
-    long literalCount[32];	  /* Distribution of literal string sizes. */
+    long numExecutions;		/* Number of ByteCodes executed. */
+    long numCompilations;	/* Number of ByteCodes created. */
+    long numByteCodesFreed;	/* Number of ByteCodes destroyed. */
+    long instructionCount[256];	/* Number of times each instruction was
+				 * executed. */
+
+    double totalSrcBytes;	/* Total source bytes ever compiled. */
+    double totalByteCodeBytes;	/* Total bytes for all ByteCodes. */
+    double currentSrcBytes;	/* Src bytes for all current ByteCodes. */
+    double currentByteCodeBytes;/* Code bytes in all current ByteCodes. */
+
+    long srcCount[32];		/* Source size distribution: # of srcs of
+				 * size [2**(n-1)..2**n), n in [0..32). */
+    long byteCodeCount[32];	/* ByteCode size distribution. */
+    long lifetimeCount[32];	/* ByteCode lifetime distribution (ms). */
+
+    double currentInstBytes;	/* Instruction bytes-current ByteCodes. */
+    double currentLitBytes;	/* Current literal bytes. */
+    double currentExceptBytes;	/* Current exception table bytes. */
+    double currentAuxBytes;	/* Current auxiliary information bytes. */
+    double currentCmdMapBytes;	/* Current src<->code map bytes. */
+
+    long numLiteralsCreated;	/* Total literal objects ever compiled. */
+    double totalLitStringBytes;	/* Total string bytes in all literals. */
+    double currentLitStringBytes;
+				/* String bytes in current literals. */
+    long literalCount[32];	/* Distribution of literal string sizes. */
 } ByteCodeStats;
 #endif /* TCL_COMPILE_STATS */
 
 /*
+ * Structure used in implementation of those core ensembles which are
+ * partially compiled. Used as an array of these, with a terminating field
+ * whose 'name' is NULL.
+ */
+
+typedef struct {
+    const char *name;		/* The name of the subcommand. */
+    Tcl_ObjCmdProc *proc;	/* The implementation of the subcommand. */
+    CompileProc *compileProc;	/* The compiler for the subcommand. */
+} EnsembleImplMap;
+
+/*
  *----------------------------------------------------------------
  * Data structures related to commands.
  *----------------------------------------------------------------
@@ -1171,11 +1420,12 @@ typedef struct ByteCodeStats {
 
 /*
  * An imported command is created in an namespace when it imports a "real"
- * command from another namespace. An imported command has a Command
- * structure that points (via its ClientData value) to the "real" Command
- * structure in the source namespace's command table. The real command
- * records all the imported commands that refer to it in a list of ImportRef
- * structures so that they can be deleted when the real command is deleted.  */
+ * command from another namespace. An imported command has a Command structure
+ * that points (via its ClientData value) to the "real" Command structure in
+ * the source namespace's command table. The real command records all the
+ * imported commands that refer to it in a list of ImportRef structures so
+ * that they can be deleted when the real command is deleted.
+ */
 
 typedef struct ImportRef {
     struct Command *importedCmdPtr;
@@ -1183,11 +1433,11 @@ typedef struct ImportRef {
 				 * an importing namespace; this command
 				 * redirects its invocations to the "real"
 				 * command. */
-    struct ImportRef *nextPtr;	/* Next element on the linked list of
-				 * imported commands that refer to the
-				 * "real" command. The real command deletes
-				 * these imported commands on this list when
-				 * it is deleted. */
+    struct ImportRef *nextPtr;	/* Next element on the linked list of imported
+				 * commands that refer to the "real" command.
+				 * The real command deletes these imported
+				 * commands on this list when it is
+				 * deleted. */
 } ImportRef;
 
 /*
@@ -1200,35 +1450,34 @@ typedef struct ImportedCmdData {
     struct Command *realCmdPtr;	/* "Real" command that this imported command
 				 * refers to. */
     struct Command *selfPtr;	/* Pointer to this imported command. Needed
-				 * only when deleting it in order to remove
-				 * it from the real command's linked list of
+				 * only when deleting it in order to remove it
+				 * from the real command's linked list of
 				 * imported commands that refer to it. */
 } ImportedCmdData;
 
 /*
- * A Command structure exists for each command in a namespace. The
- * Tcl_Command opaque type actually refers to these structures.
+ * A Command structure exists for each command in a namespace. The Tcl_Command
+ * opaque type actually refers to these structures.
  */
 
 typedef struct Command {
-    Tcl_HashEntry *hPtr;	/* Pointer to the hash table entry that
-				 * refers to this command. The hash table is
-				 * either a namespace's command table or an
+    Tcl_HashEntry *hPtr;	/* Pointer to the hash table entry that refers
+				 * to this command. The hash table is either a
+				 * namespace's command table or an
 				 * interpreter's hidden command table. This
 				 * pointer is used to get a command's name
 				 * from its Tcl_Command handle. NULL means
-				 * that the hash table entry has been
-				 * removed already (this can happen if
-				 * deleteProc causes the command to be
-				 * deleted or recreated). */
+				 * that the hash table entry has been removed
+				 * already (this can happen if deleteProc
+				 * causes the command to be deleted or
+				 * recreated). */
     Namespace *nsPtr;		/* Points to the namespace containing this
 				 * command. */
     int refCount;		/* 1 if in command hashtable plus 1 for each
 				 * reference from a CmdName Tcl object
-				 * representing a command's name in a
-				 * ByteCode instruction sequence. This
-				 * structure can be freed when refCount
-				 * becomes zero. */
+				 * representing a command's name in a ByteCode
+				 * instruction sequence. This structure can be
+				 * freed when refCount becomes zero. */
     int cmdEpoch;		/* Incremented to invalidate any references
 				 * that point to this command when it is
 				 * renamed, deleted, hidden, or exposed. */
@@ -1239,45 +1488,46 @@ typedef struct Command {
     Tcl_CmdProc *proc;		/* String-based command procedure. */
     ClientData clientData;	/* Arbitrary value passed to string proc. */
     Tcl_CmdDeleteProc *deleteProc;
-				/* Procedure invoked when deleting command
-				 * to, e.g., free all client data. */
+				/* Procedure invoked when deleting command to,
+				 * e.g., free all client data. */
     ClientData deleteData;	/* Arbitrary value passed to deleteProc. */
     int flags;			/* Miscellaneous bits of information about
 				 * command. See below for definitions. */
     ImportRef *importRefPtr;	/* List of each imported Command created in
 				 * another namespace when this command is
-				 * imported. These imported commands
-				 * redirect invocations back to this
-				 * command. The list is used to remove all
-				 * those imported commands when deleting
-				 * this "real" command. */
+				 * imported. These imported commands redirect
+				 * invocations back to this command. The list
+				 * is used to remove all those imported
+				 * commands when deleting this "real"
+				 * command. */
     CommandTrace *tracePtr;	/* First in list of all traces set for this
 				 * command. */
 } Command;
 
 /*
- * Flag bits for commands. 
+ * Flag bits for commands.
  *
- * CMD_IS_DELETED -		Means that the command is in the process
- *                              of being deleted (its deleteProc is
- *                              currently executing). Other attempts to
- *                              delete the command should be ignored.
+ * CMD_IS_DELETED -		Means that the command is in the process of
+ *				being deleted (its deleteProc is currently
+ *				executing). Other attempts to delete the
+ *				command should be ignored.
  * CMD_TRACE_ACTIVE -		1 means that trace processing is currently
- *				underway for a rename/delete change.
- *				See the two flags below for which is
- *				currently being processed.
- * CMD_HAS_EXEC_TRACES -	1 means that this command has at least
- *                              one execution trace (as opposed to simple
- *                              delete/rename traces) in its tracePtr list.
- * TCL_TRACE_RENAME -           A rename trace is in progress. Further
- *                              recursive renames will not be traced.
- * TCL_TRACE_DELETE -           A delete trace is in progress. Further 
- *                              recursive deletes will not be traced.
+ *				underway for a rename/delete change. See the
+ *				two flags below for which is currently being
+ *				processed.
+ * CMD_HAS_EXEC_TRACES -	1 means that this command has at least one
+ *				execution trace (as opposed to simple
+ *				delete/rename traces) in its tracePtr list.
+ * TCL_TRACE_RENAME -		A rename trace is in progress. Further
+ *				recursive renames will not be traced.
+ * TCL_TRACE_DELETE -		A delete trace is in progress. Further
+ *				recursive deletes will not be traced.
  * (these last two flags are defined in tcl.h)
  */
-#define CMD_IS_DELETED		0x1
-#define CMD_TRACE_ACTIVE	0x2
-#define CMD_HAS_EXEC_TRACES	0x4
+
+#define CMD_IS_DELETED		    0x1
+#define CMD_TRACE_ACTIVE	    0x2
+#define CMD_HAS_EXEC_TRACES	    0x4
 
 /*
  *----------------------------------------------------------------
@@ -1286,12 +1536,11 @@ typedef struct Command {
  */
 
 /*
- * The interpreter keeps a linked list of name resolution schemes.
- * The scheme for a namespace is consulted first, followed by the
- * list of schemes in an interpreter, followed by the default
- * name resolution in Tcl.  Schemes are added/removed from the
- * interpreter's list by calling Tcl_AddInterpResolver and
- * Tcl_RemoveInterpResolver.
+ * The interpreter keeps a linked list of name resolution schemes. The scheme
+ * for a namespace is consulted first, followed by the list of schemes in an
+ * interpreter, followed by the default name resolution in Tcl. Schemes are
+ * added/removed from the interpreter's list by calling Tcl_AddInterpResolver
+ * and Tcl_RemoveInterpResolver.
  */
 
 typedef struct ResolverScheme {
@@ -1300,18 +1549,23 @@ typedef struct ResolverScheme {
 				/* Procedure handling command name
 				 * resolution. */
     Tcl_ResolveVarProc *varResProc;
-				/* Procedure handling variable name
-				 * resolution for variables that
-				 * can only be handled at runtime. */
+				/* Procedure handling variable name resolution
+				 * for variables that can only be handled at
+				 * runtime. */
     Tcl_ResolveCompiledVarProc *compiledVarResProc;
-				/* Procedure handling variable name
-				 * resolution at compile time. */
+				/* Procedure handling variable name resolution
+				 * at compile time. */
 
     struct ResolverScheme *nextPtr;
 				/* Pointer to next record in linked list. */
 } ResolverScheme;
 
-#ifdef TCL_TIP268
+/*
+ * Forward declaration of the TIP#143 limit handler structure.
+ */
+
+typedef struct LimitHandler LimitHandler;
+
 /*
  * TIP #268.
  * Values for the selection mode, i.e the package require preferences.
@@ -1320,24 +1574,21 @@ typedef struct ResolverScheme {
 enum PkgPreferOptions {
     PKG_PREFER_LATEST, PKG_PREFER_STABLE
 };
-#endif
 
 /*
  *----------------------------------------------------------------
- * This structure defines an interpreter, which is a collection of
- * commands plus other state information related to interpreting
- * commands, such as variable storage. Primary responsibility for
- * this data structure is in tclBasic.c, but almost every Tcl
- * source file uses something in here.
+ * This structure defines an interpreter, which is a collection of commands
+ * plus other state information related to interpreting commands, such as
+ * variable storage. Primary responsibility for this data structure is in
+ * tclBasic.c, but almost every Tcl source file uses something in here.
  *----------------------------------------------------------------
  */
 
 typedef struct Interp {
-
     /*
-     * Note:  the first three fields must match exactly the fields in
-     * a Tcl_Interp struct (see tcl.h).	 If you change one, be sure to
-     * change the other.
+     * Note: the first three fields must match exactly the fields in a
+     * Tcl_Interp struct (see tcl.h). If you change one, be sure to change the
+     * other.
      *
      * The interpreter's result is held in both the string and the
      * objResultPtr fields. These fields hold, respectively, the result's
@@ -1346,106 +1597,97 @@ typedef struct Interp {
      * The two fields are kept consistent unless some C code sets
      * interp->result directly. Programs should not access result and
      * objResultPtr directly; instead, they should always get and set the
-     * result using procedures such as Tcl_SetObjResult, Tcl_GetObjResult,
-     * and Tcl_GetStringResult. See the SetResult man page for details.
+     * result using procedures such as Tcl_SetObjResult, Tcl_GetObjResult, and
+     * Tcl_GetStringResult. See the SetResult man page for details.
      */
 
     char *result;		/* If the last command returned a string
 				 * result, this points to it. Should not be
 				 * accessed directly; see comment above. */
     Tcl_FreeProc *freeProc;	/* Zero means a string result is statically
-				 * allocated. TCL_DYNAMIC means string
-				 * result was allocated with ckalloc and
-				 * should be freed with ckfree. Other values
-				 * give address of procedure to invoke to
-				 * free the string result. Tcl_Eval must
-				 * free it before executing next command. */
-    int errorLine;		/* When TCL_ERROR is returned, this gives
-				 * the line number in the command where the
-				 * error occurred (1 means first line). */
+				 * allocated. TCL_DYNAMIC means string result
+				 * was allocated with ckalloc and should be
+				 * freed with ckfree. Other values give
+				 * address of procedure to invoke to free the
+				 * string result. Tcl_Eval must free it before
+				 * executing next command. */
+    int errorLine;		/* When TCL_ERROR is returned, this gives the
+				 * line number in the command where the error
+				 * occurred (1 means first line). */
     struct TclStubs *stubTable;
-				/* Pointer to the exported Tcl stub table.
-				 * On previous versions of Tcl this is a
-				 * pointer to the objResultPtr or a pointer
-				 * to a buckets array in a hash table. We
-				 * therefore have to do some careful checking
-				 * before we can use this. */
+				/* Pointer to the exported Tcl stub table. On
+				 * previous versions of Tcl this is a pointer
+				 * to the objResultPtr or a pointer to a
+				 * buckets array in a hash table. We therefore
+				 * have to do some careful checking before we
+				 * can use this. */
 
     TclHandle handle;		/* Handle used to keep track of when this
 				 * interp is deleted. */
 
     Namespace *globalNsPtr;	/* The interpreter's global namespace. */
     Tcl_HashTable *hiddenCmdTablePtr;
-				/* Hash table used by tclBasic.c to keep
-				 * track of hidden commands on a per-interp
+				/* Hash table used by tclBasic.c to keep track
+				 * of hidden commands on a per-interp
 				 * basis. */
     ClientData interpInfo;	/* Information used by tclInterp.c to keep
-				 * track of master/slave interps on
-				 * a per-interp basis. */
-    Tcl_HashTable mathFuncTable;/* Contains all the math functions currently
-				 * defined for the interpreter.	 Indexed by
-				 * strings (function names); values have
-				 * type (MathFunc *). */
-
-
+				 * track of master/slave interps on a
+				 * per-interp basis. */
+    Tcl_HashTable unused2;	/* No longer used (was mathFuncTable) */
 
     /*
-     * Information related to procedures and variables. See tclProc.c
-     * and tclVar.c for usage.
+     * Information related to procedures and variables. See tclProc.c and
+     * tclVar.c for usage.
      */
 
     int numLevels;		/* Keeps track of how many nested calls to
 				 * Tcl_Eval are in progress for this
-				 * interpreter.	 It's used to delay deletion
-				 * of the table until all Tcl_Eval
-				 * invocations are completed. */
+				 * interpreter. It's used to delay deletion of
+				 * the table until all Tcl_Eval invocations
+				 * are completed. */
     int maxNestingDepth;	/* If numLevels exceeds this value then Tcl
 				 * assumes that infinite recursion has
 				 * occurred and it generates an error. */
     CallFrame *framePtr;	/* Points to top-most in stack of all nested
-				 * procedure invocations.  NULL means there
-				 * are no active procedures. */
+				 * procedure invocations. */
     CallFrame *varFramePtr;	/* Points to the call frame whose variables
 				 * are currently in use (same as framePtr
 				 * unless an "uplevel" command is
-				 * executing). NULL means no procedure is
-				 * active or "uplevel 0" is executing. */
+				 * executing). */
     ActiveVarTrace *activeVarTracePtr;
-				/* First in list of active traces for
-				 * interp, or NULL if no active traces. */
-    int returnCode;		/* Completion code to return if current
-				 * procedure exits with TCL_RETURN code. */
-    char *errorInfo;		/* Value to store in errorInfo if returnCode
-				 * is TCL_ERROR.  Malloc'ed, may be NULL */
-    char *errorCode;		/* Value to store in errorCode if returnCode
-				 * is TCL_ERROR.  Malloc'ed, may be NULL */
+				/* First in list of active traces for interp,
+				 * or NULL if no active traces. */
+    int returnCode;		/* [return -code] parameter. */
+    CallFrame *rootFramePtr;	/* Global frame pointer for this
+				 * interpreter. */
+    Namespace *lookupNsPtr;	/* Namespace to use ONLY on the next
+				 * TCL_EVAL_INVOKE call to Tcl_EvalObjv. */
 
     /*
-     * Information used by Tcl_AppendResult to keep track of partial
-     * results.	 See Tcl_AppendResult code for details.
+     * Information used by Tcl_AppendResult to keep track of partial results.
+     * See Tcl_AppendResult code for details.
      */
 
-    char *appendResult;		/* Storage space for results generated
-				 * by Tcl_AppendResult.	 Malloc-ed.  NULL
-				 * means not yet allocated. */
+    char *appendResult;		/* Storage space for results generated by
+				 * Tcl_AppendResult. Ckalloc-ed. NULL means
+				 * not yet allocated. */
     int appendAvl;		/* Total amount of space available at
 				 * partialResult. */
-    int appendUsed;		/* Number of non-null bytes currently
-				 * stored at partialResult. */
+    int appendUsed;		/* Number of non-null bytes currently stored
+				 * at partialResult. */
 
     /*
-     * Information about packages.  Used only in tclPkg.c.
+     * Information about packages. Used only in tclPkg.c.
      */
 
-    Tcl_HashTable packageTable;	/* Describes all of the packages loaded
-				 * in or available to this interpreter.
-				 * Keys are package names, values are
-				 * (Package *) pointers. */
-    char *packageUnknown;	/* Command to invoke during "package
-				 * require" commands for packages that
-				 * aren't described in packageTable. 
-				 * Malloc'ed, may be NULL. */
-
+    Tcl_HashTable packageTable;	/* Describes all of the packages loaded in or
+				 * available to this interpreter. Keys are
+				 * package names, values are (Package *)
+				 * pointers. */
+    char *packageUnknown;	/* Command to invoke during "package require"
+				 * commands for packages that aren't described
+				 * in packageTable. Ckalloc'ed, may be
+				 * NULL. */
     /*
      * Miscellaneous information:
      */
@@ -1454,44 +1696,42 @@ typedef struct Interp {
 				 * has been called for this interpreter. */
     int evalFlags;		/* Flags to control next call to Tcl_Eval.
 				 * Normally zero, but may be set before
-				 * calling Tcl_Eval.  See below for valid
+				 * calling Tcl_Eval. See below for valid
 				 * values. */
-    int termOffset;		/* Offset of character just after last one
-				 * compiled or executed by Tcl_EvalObj. */
-    LiteralTable literalTable;	/* Contains LiteralEntry's describing all
-				 * Tcl objects holding literals of scripts
-				 * compiled by the interpreter. Indexed by
-				 * the string representations of literals.
-				 * Used to avoid creating duplicate
-				 * objects. */
-    int compileEpoch;		/* Holds the current "compilation epoch"
-				 * for this interpreter. This is
-				 * incremented to invalidate existing
-				 * ByteCodes when, e.g., a command with a
-				 * compile procedure is redefined. */
-    Proc *compiledProcPtr;	/* If a procedure is being compiled, a
-				 * pointer to its Proc structure; otherwise,
-				 * this is NULL. Set by ObjInterpProc in
-				 * tclProc.c and used by tclCompile.c to
-				 * process local variables appropriately. */
+    int unused1;		/* No longer used (was termOffset) */
+    LiteralTable literalTable;	/* Contains LiteralEntry's describing all Tcl
+				 * objects holding literals of scripts
+				 * compiled by the interpreter. Indexed by the
+				 * string representations of literals. Used to
+				 * avoid creating duplicate objects. */
+    int compileEpoch;		/* Holds the current "compilation epoch" for
+				 * this interpreter. This is incremented to
+				 * invalidate existing ByteCodes when, e.g., a
+				 * command with a compile procedure is
+				 * redefined. */
+    Proc *compiledProcPtr;	/* If a procedure is being compiled, a pointer
+				 * to its Proc structure; otherwise, this is
+				 * NULL. Set by ObjInterpProc in tclProc.c and
+				 * used by tclCompile.c to process local
+				 * variables appropriately. */
     ResolverScheme *resolverPtr;
 				/* Linked list of name resolution schemes
-				 * added to this interpreter.  Schemes
-				 * are added/removed by calling
+				 * added to this interpreter. Schemes are
+				 * added and removed by calling
 				 * Tcl_AddInterpResolvers and
-				 * Tcl_RemoveInterpResolver. */
+				 * Tcl_RemoveInterpResolver respectively. */
     Tcl_Obj *scriptFile;	/* NULL means there is no nested source
-				 * command active;  otherwise this points to
+				 * command active; otherwise this points to
 				 * pathPtr of the file being sourced. */
-    int flags;			/* Various flag bits.  See below. */
+    int flags;			/* Various flag bits. See below. */
     long randSeed;		/* Seed used for rand() function. */
     Trace *tracePtr;		/* List of traces for this interpreter. */
-    Tcl_HashTable *assocData;	/* Hash table for associating data with
-				 * this interpreter. Cleaned up when
-				 * this interpreter is deleted. */
+    Tcl_HashTable *assocData;	/* Hash table for associating data with this
+				 * interpreter. Cleaned up when this
+				 * interpreter is deleted. */
     struct ExecEnv *execEnvPtr;	/* Execution environment for Tcl bytecode
-				 * execution. Contains a pointer to the
-				 * Tcl evaluation stack. */
+				 * execution. Contains a pointer to the Tcl
+				 * evaluation stack. */
     Tcl_Obj *emptyObjPtr;	/* Points to an object holding an empty
 				 * string. Returned by Tcl_ObjSetVar2 when
 				 * variable traces change a variable in a
@@ -1501,67 +1741,137 @@ typedef struct Interp {
     Tcl_Obj *objResultPtr;	/* If the last command returned an object
 				 * result, this points to it. Should not be
 				 * accessed directly; see comment above. */
-    Tcl_ThreadId threadId;	/* ID of thread that owns the interpreter */
+    Tcl_ThreadId threadId;	/* ID of thread that owns the interpreter. */
 
     ActiveCommandTrace *activeCmdTracePtr;
 				/* First in list of active command traces for
 				 * interp, or NULL if no active traces. */
     ActiveInterpTrace *activeInterpTracePtr;
-				/* First in list of active traces for
-				 * interp, or NULL if no active traces. */
+				/* First in list of active traces for interp,
+				 * or NULL if no active traces. */
 
-    int tracesForbiddingInline; /* Count of traces (in the list headed by
+    int tracesForbiddingInline;	/* Count of traces (in the list headed by
 				 * tracePtr) that forbid inline bytecode
-				 * compilation */
-#ifdef TCL_TIP280
-    /* TIP #280 */
-    CmdFrame* cmdFramePtr;      /* Points to the command frame containing
-				 * the location information for the current
+				 * compilation. */
+
+    /*
+     * Fields used to manage extensible return options (TIP 90).
+     */
+
+    Tcl_Obj *returnOpts;	/* A dictionary holding the options to the
+				 * last [return] command. */
+
+    Tcl_Obj *errorInfo;		/* errorInfo value (now as a Tcl_Obj). */
+    Tcl_Obj *eiVar;		/* cached ref to ::errorInfo variable. */
+    Tcl_Obj *errorCode;		/* errorCode value (now as a Tcl_Obj). */
+    Tcl_Obj *ecVar;		/* cached ref to ::errorInfo variable. */
+    int returnLevel;		/* [return -level] parameter. */
+
+    /*
+     * Resource limiting framework support (TIP#143).
+     */
+
+    struct {
+	int active;		/* Flag values defining which limits have been
+				 * set. */
+	int granularityTicker;	/* Counter used to determine how often to
+				 * check the limits. */
+	int exceeded;		/* Which limits have been exceeded, described
+				 * as flag values the same as the 'active'
+				 * field. */
+
+	int cmdCount;		/* Limit for how many commands to execute in
+				 * the interpreter. */
+	LimitHandler *cmdHandlers;
+				/* Handlers to execute when the limit is
+				 * reached. */
+	int cmdGranularity;	/* Mod factor used to determine how often to
+				 * evaluate the limit check. */
+
+	Tcl_Time time;		/* Time limit for execution within the
+				 * interpreter. */
+	LimitHandler *timeHandlers;
+				/* Handlers to execute when the limit is
+				 * reached. */
+	int timeGranularity;	/* Mod factor used to determine how often to
+				 * evaluate the limit check. */
+	Tcl_TimerToken timeEvent;
+				/* Handle for a timer callback that will occur
+				 * when the time-limit is exceeded. */
+
+	Tcl_HashTable callbacks;/* Mapping from (interp,type) pair to data
+				 * used to install a limit handler callback to
+				 * run in _this_ interp when the limit is
+				 * exceeded. */
+    } limit;
+
+    /*
+     * Information for improved default error generation from ensembles
+     * (TIP#112).
+     */
+
+    struct {
+	Tcl_Obj *const *sourceObjs;
+				/* What arguments were actually input into the
+				 * *root* ensemble command? (Nested ensembles
+				 * don't rewrite this.) NULL if we're not
+				 * processing an ensemble. */
+	int numRemovedObjs;	/* How many arguments have been stripped off
+				 * because of ensemble processing. */
+	int numInsertedObjs;	/* How many of the current arguments were
+				 * inserted by an ensemble. */
+    } ensembleRewrite;
+
+    /*
+     * TIP #219: Global info for the I/O system.
+     */
+
+    Tcl_Obj *chanMsg;		/* Error message set by channel drivers, for
+				 * the propagation of arbitrary Tcl errors.
+				 * This information, if present (chanMsg not
+				 * NULL), takes precedence over a POSIX error
+				 * code returned by a channel operation. */
+
+    /*
+     * Source code origin information (TIP #280).
+     */
+
+    CmdFrame *cmdFramePtr;	/* Points to the command frame containing the
+				 * location information for the current
 				 * command. */
-    CONST CmdFrame* invokeCmdFramePtr; /* Points to the command frame which is the
-				  * invoking context of the bytecode compiler.
-				  * NULL when the byte code compiler is not
-				  * active */
-    int invokeWord;             /* Index of the word in the command which
+    const CmdFrame *invokeCmdFramePtr;
+				/* Points to the command frame which is the
+				 * invoking context of the bytecode compiler.
+				 * NULL when the byte code compiler is not
+				 * active. */
+    int invokeWord;		/* Index of the word in the command which
 				 * is getting compiled. */
-    Tcl_HashTable* linePBodyPtr;
-                                /* This table remembers for each
-				 * statically defined procedure the
-				 * location information for its
-				 * body. It is keyed by the address of
-				 * the Proc structure for a procedure.
-				 * The values are "struct CmdFrame*".
-				 */
-    Tcl_HashTable* lineBCPtr;
-                                /* This table remembers for each
-				 * ByteCode object the location
-				 * information for its body. It is
-				 * keyed by the address of the Proc
-				 * structure for a procedure. The
-				 * values are "struct ExtCmdLoc*" (See
-				 * tclCompile.h).
-				 */
-    Tcl_HashTable* lineLABCPtr;
-    Tcl_HashTable* lineLAPtr;
-                                /* This table remembers for each
-				 * argument of a command on the
-				 * execution stack the index of the
-				 * argument in the command, and the
-				 * location data of the command. It is
-				 * keyed by the address of the Tcl_Obj
-				 * containing the argument. The values
-				 * are "struct CFWord*" (See
-				 * tclBasic.c). This allows commands
-				 * like uplevel, eval, etc. to find
-				 * location information for their
-				 * arguments, if they are a proper
-				 * literal argument to an invoking
-				 * command. Alt view: An index to the
-				 * CmdFrame stack keyed by command
-				 * argument holders.
-				 */
-    ContLineLoc* scriptCLLocPtr;
-                                /* This table points to the location data for
+    Tcl_HashTable *linePBodyPtr;/* This table remembers for each statically
+				 * defined procedure the location information
+				 * for its body. It is keyed by the address of
+				 * the Proc structure for a procedure. The
+				 * values are "struct CmdFrame*". */
+    Tcl_HashTable *lineBCPtr;	/* This table remembers for each ByteCode
+				 * object the location information for its
+				 * body. It is keyed by the address of the
+				 * Proc structure for a procedure. The values
+				 * are "struct ExtCmdLoc*". (See
+				 * tclCompile.h) */
+    Tcl_HashTable *lineLABCPtr;
+    Tcl_HashTable *lineLAPtr;	/* This table remembers for each argument of a
+				 * command on the execution stack the index of
+				 * the argument in the command, and the
+				 * location data of the command. It is keyed
+				 * by the address of the Tcl_Obj containing
+				 * the argument. The values are "struct
+				 * CFWord*" (See tclBasic.c). This allows
+				 * commands like uplevel, eval, etc. to find
+				 * location information for their arguments,
+				 * if they are a proper literal argument to an
+				 * invoking command. Alt view: An index to the
+				 * CmdFrame stack keyed by command argument
+				 * holders. */
+    ContLineLoc *scriptCLLocPtr;/* This table points to the location data for
 				 * invisible continuation lines in the script,
 				 * if any. This pointer is set by the function
 				 * TclEvalObjEx() in file "tclBasic.c", and
@@ -1570,43 +1880,103 @@ typedef struct Interp {
 				 * execution what CompileEnv.clLoc does for
 				 * the bytecode compiler.
 				 */
-#endif
-#ifdef TCL_TIP268
     /*
-     * TIP #268.
-     * The currently active selection mode,
-     * i.e the package require preferences.
+     * TIP #268. The currently active selection mode, i.e. the package require
+     * preferences.
      */
 
-    int packagePrefer;          /* Current package selection mode. */
-#endif
+    int packagePrefer;		/* Current package selection mode. */
+
+    /*
+     * Hashtables for variable traces and searches.
+     */
+
+    Tcl_HashTable varTraces;	/* Hashtable holding the start of a variable's
+				 * active trace list; varPtr is the key. */
+    Tcl_HashTable varSearches;	/* Hashtable holding the start of a variable's
+				 * active searches list; varPtr is the key. */
+    /*
+     * The thread-specific data ekeko: cache pointers or values that
+     *  (a) do not change during the thread's lifetime
+     *  (b) require access to TSD to determine at runtime
+     *  (c) are accessed very often (e.g., at each command call)
+     *
+     * Note that these are the same for all interps in the same thread. They
+     * just have to be initialised for the thread's master interp, slaves
+     * inherit the value.
+     *
+     * They are used by the macros defined below.
+     */
+
+    void *allocCache;
+    void *pendingObjDataPtr;	/* Pointer to the Cache and PendingObjData
+				 * structs for this interp's thread; see
+				 * tclObj.c and tclThreadAlloc.c */
+    int *asyncReadyPtr;		/* Pointer to the asyncReady indicator for
+				 * this interp's thread; see tclAsync.c */
+    int *stackBound;		/* Pointer to the limit stack address
+				 * allowable for invoking a new command
+				 * without "risking" a C-stack overflow; see
+				 * TclpCheckStackSpace in the platform's
+				 * directory. */
+
+
+#ifdef TCL_COMPILE_STATS
     /*
      * Statistical information about the bytecode compiler and interpreter's
      * operation.
      */
 
-#ifdef TCL_COMPILE_STATS
-    ByteCodeStats stats;	/* Holds compilation and execution
-				 * statistics for this interpreter. */
-#endif /* TCL_COMPILE_STATS */	  
+    ByteCodeStats stats;	/* Holds compilation and execution statistics
+				 * for this interpreter. */
+#endif /* TCL_COMPILE_STATS */
 } Interp;
 
 /*
+ * Macros that use the TSD-ekeko.
+ */
+
+#define TclAsyncReady(iPtr) \
+    *((iPtr)->asyncReadyPtr)
+
+/*
+ * Macros for splicing into and out of doubly linked lists. They assume
+ * existence of struct items 'prevPtr' and 'nextPtr'.
+ *
+ * a = element to add or remove.
+ * b = list head.
+ *
+ * TclSpliceIn adds to the head of the list.
+ */
+
+#define TclSpliceIn(a,b)			\
+    (a)->nextPtr = (b);				\
+    if ((b) != NULL) {				\
+	(b)->prevPtr = (a);			\
+    }						\
+    (a)->prevPtr = NULL, (b) = (a);
+
+#define TclSpliceOut(a,b)			\
+    if ((a)->prevPtr != NULL) {			\
+	(a)->prevPtr->nextPtr = (a)->nextPtr;	\
+    } else {					\
+	(b) = (a)->nextPtr;			\
+    }						\
+    if ((a)->nextPtr != NULL) {			\
+	(a)->nextPtr->prevPtr = (a)->prevPtr;	\
+    }
+
+/*
  * EvalFlag bits for Interp structures:
  *
- * TCL_BRACKET_TERM	1 means that the current script is terminated by
- *			a close bracket rather than the end of the string.
- * TCL_ALLOW_EXCEPTIONS	1 means it's OK for the script to terminate with
- *			a code other than TCL_OK or TCL_ERROR;	0 means
- *			codes other than these should be turned into errors.
- */
-
-#define TCL_BRACKET_TERM	  1
-#define TCL_ALLOW_EXCEPTIONS	  4
-#ifdef TCL_TIP280
-#define TCL_EVAL_FILE             2
-#define TCL_EVAL_CTX              8
-#endif
+ * TCL_ALLOW_EXCEPTIONS	1 means it's OK for the script to terminate with a
+ *			code other than TCL_OK or TCL_ERROR; 0 means codes
+ *			other than these should be turned into errors.
+ */
+
+#define TCL_ALLOW_EXCEPTIONS	4
+#define TCL_EVAL_FILE		2
+#define TCL_EVAL_CTX		8
 
 /*
  * Flag bits for Interp structures:
@@ -1615,115 +1985,126 @@ typedef struct Interp {
  *			don't process any more commands for it, and destroy
  *			the structure as soon as all nested invocations of
  *			Tcl_Eval are done.
- * ERR_IN_PROGRESS:	Non-zero means an error unwind is already in
- *			progress. Zero means a command proc has been
- *			invoked since last error occured.
- * ERR_ALREADY_LOGGED:	Non-zero means information has already been logged
- *			in $errorInfo for the current Tcl_Eval instance,
- *			so Tcl_Eval needn't log it (used to implement the
- *			"error message log" command).
- * ERROR_CODE_SET:	Non-zero means that Tcl_SetErrorCode has been
- *			called to record information for the current
- *			error.	Zero means Tcl_Eval must clear the
- *			errorCode variable if an error is returned.
- * EXPR_INITIALIZED:	Non-zero means initialization specific to
- *			expressions has	been carried out.
- * DONT_COMPILE_CMDS_INLINE: Non-zero means that the bytecode compiler
- *			should not compile any commands into an inline
- *			sequence of instructions. This is set 1, for
- *			example, when command traces are requested.
- * RAND_SEED_INITIALIZED: Non-zero means that the randSeed value of the
- *			interp has not be initialized.	This is set 1
- *			when we first use the rand() or srand() functions.
- * SAFE_INTERP:		Non zero means that the current interp is a
- *			safe interp (ie it has only the safe commands
- *			installed, less priviledge than a regular interp).
- * USE_EVAL_DIRECT:	Non-zero means don't use the compiler or byte-code
- *			interpreter; instead, have Tcl_EvalObj call
- *			Tcl_EvalEx. Used primarily for testing the
- *			new parser.
+ * ERR_ALREADY_LOGGED:	Non-zero means information has already been logged in
+ *			iPtr->errorInfo for the current Tcl_Eval instance, so
+ *			Tcl_Eval needn't log it (used to implement the "error
+ *			message log" command).
+ * DONT_COMPILE_CMDS_INLINE: Non-zero means that the bytecode compiler should
+ *			not compile any commands into an inline sequence of
+ *			instructions. This is set 1, for example, when command
+ *			traces are requested.
+ * RAND_SEED_INITIALIZED: Non-zero means that the randSeed value of the interp
+ *			has not be initialized. This is set 1 when we first
+ *			use the rand() or srand() functions.
+ * SAFE_INTERP:		Non zero means that the current interp is a safe
+ *			interp (i.e. it has only the safe commands installed,
+ *			less priviledge than a regular interp).
+ * INTERP_DEBUG_FRAME:	Used for switching on various extra interpreter
+ *			debug/info mechanisms (e.g. info frame eval/uplevel
+ *			tracing) which are performance intensive.
  * INTERP_TRACE_IN_PROGRESS: Non-zero means that an interp trace is currently
  *			active; so no further trace callbacks should be
  *			invoked.
+ * INTERP_ALTERNATE_WRONG_ARGS: Used for listing second and subsequent forms
+ *			of the wrong-num-args string in Tcl_WrongNumArgs.
+ *			Makes it append instead of replacing and uses
+ *			different intermediate text.
+ *
+ * WARNING: For the sake of some extensions that have made use of former
+ * internal values, do not re-use the flag values 2 (formerly ERR_IN_PROGRESS)
+ * or 8 (formerly ERROR_CODE_SET).
  */
 
-#define DELETED				    1
-#define ERR_IN_PROGRESS			    2
-#define ERR_ALREADY_LOGGED		    4
-#define ERROR_CODE_SET			    8
-#define EXPR_INITIALIZED		 0x10
-#define DONT_COMPILE_CMDS_INLINE	 0x20
-#define RAND_SEED_INITIALIZED		 0x40
-#define SAFE_INTERP			 0x80
-#define USE_EVAL_DIRECT			0x100
-#define INTERP_TRACE_IN_PROGRESS	0x200
+#define DELETED				     1
+#define ERR_ALREADY_LOGGED		     4
+#define INTERP_DEBUG_FRAME		  0x10
+#define DONT_COMPILE_CMDS_INLINE	  0x20
+#define RAND_SEED_INITIALIZED		  0x40
+#define SAFE_INTERP			  0x80
+#define INTERP_TRACE_IN_PROGRESS	 0x200
+#define INTERP_ALTERNATE_WRONG_ARGS	 0x400
+#define ERR_LEGACY_COPY			 0x800
 
 /*
- * Maximum number of levels of nesting permitted in Tcl commands (used
- * to catch infinite recursion).
+ * Maximum number of levels of nesting permitted in Tcl commands (used to
+ * catch infinite recursion).
  */
 
 #define MAX_NESTING_DEPTH	1000
 
 /*
- * The macro below is used to modify a "char" value (e.g. by casting
- * it to an unsigned character) so that it can be used safely with
- * macros such as isspace.
+ * The macro below is used to modify a "char" value (e.g. by casting it to an
+ * unsigned character) so that it can be used safely with macros such as
+ * isspace.
  */
 
 #define UCHAR(c) ((unsigned char) (c))
 
 /*
+ * This macro is used to properly align the memory allocated by Tcl, giving
+ * the same alignment as the native malloc.
+ */
+
+#if defined(__APPLE__)
+#define TCL_ALLOCALIGN	16
+#else
+#define TCL_ALLOCALIGN	(2*sizeof(void *))
+#endif
+
+/*
  * This macro is used to determine the offset needed to safely allocate any
  * data structure in memory. Given a starting offset or size, it "rounds up"
  * or "aligns" the offset to the next 8-byte boundary so that any data
  * structure can be placed at the resulting offset without fear of an
  * alignment error.
  *
- * WARNING!! DO NOT USE THIS MACRO TO ALIGN POINTERS: it will produce
- * the wrong result on platforms that allocate addresses that are divisible
- * by 4 or 2. Only use it for offsets or sizes.
+ * WARNING!! DO NOT USE THIS MACRO TO ALIGN POINTERS: it will produce the
+ * wrong result on platforms that allocate addresses that are divisible by 4
+ * or 2. Only use it for offsets or sizes.
+ *
+ * This macro is only used by tclCompile.c in the core (Bug 926445). It
+ * however not be made file static, as extensions that touch bytecodes
+ * (notably tbcload) require it.
  */
 
 #define TCL_ALIGN(x) (((int)(x) + 7) & ~7)
 
 /*
- * The following enum values are used to specify the runtime platform
- * setting of the tclPlatform variable.
+ * The following enum values are used to specify the runtime platform setting
+ * of the tclPlatform variable.
  */
 
 typedef enum {
-    TCL_PLATFORM_UNIX,		/* Any Unix-like OS. */
-    TCL_PLATFORM_WINDOWS=2	/* Any Microsoft Windows OS. */
+    TCL_PLATFORM_UNIX = 0,	/* Any Unix-like OS. */
+    TCL_PLATFORM_WINDOWS = 2	/* Any Microsoft Windows OS. */
 } TclPlatformType;
 
 /*
- *  The following enum values are used to indicate the translation
- *  of a Tcl channel.  Declared here so that each platform can define
- *  TCL_PLATFORM_TRANSLATION to the native translation on that platform
+ * The following enum values are used to indicate the translation of a Tcl
+ * channel. Declared here so that each platform can define
+ * TCL_PLATFORM_TRANSLATION to the native translation on that platform.
  */
 
 typedef enum TclEolTranslation {
-    TCL_TRANSLATE_AUTO,                 /* Eol == \r, \n and \r\n. */
-    TCL_TRANSLATE_CR,                   /* Eol == \r. */
-    TCL_TRANSLATE_LF,                   /* Eol == \n. */
-    TCL_TRANSLATE_CRLF                  /* Eol == \r\n. */
+    TCL_TRANSLATE_AUTO,		/* Eol == \r, \n and \r\n. */
+    TCL_TRANSLATE_CR,		/* Eol == \r. */
+    TCL_TRANSLATE_LF,		/* Eol == \n. */
+    TCL_TRANSLATE_CRLF		/* Eol == \r\n. */
 } TclEolTranslation;
 
 /*
  * Flags for TclInvoke:
  *
- * TCL_INVOKE_HIDDEN		Invoke a hidden command; if not set,
- *				invokes an exposed command.
- * TCL_INVOKE_NO_UNKNOWN	If set, "unknown" is not invoked if
- *				the command to be invoked is not found.
- *				Only has an effect if invoking an exposed
- *				command, i.e. if TCL_INVOKE_HIDDEN is not
- *				also set.
- * TCL_INVOKE_NO_TRACEBACK	Does not record traceback information if
- *				the invoked command returns an error.  Used
- *				if the caller plans on recording its own
- *				traceback information.
+ * TCL_INVOKE_HIDDEN		Invoke a hidden command; if not set, invokes
+ *				an exposed command.
+ * TCL_INVOKE_NO_UNKNOWN	If set, "unknown" is not invoked if the
+ *				command to be invoked is not found. Only has
+ *				an effect if invoking an exposed command,
+ *				i.e. if TCL_INVOKE_HIDDEN is not also set.
+ * TCL_INVOKE_NO_TRACEBACK	Does not record traceback information if the
+ *				invoked command returns an error. Used if the
+ *				caller plans on recording its own traceback
+ *				information.
  */
 
 #define	TCL_INVOKE_HIDDEN	(1<<0)
@@ -1731,62 +2112,176 @@ typedef enum TclEolTranslation {
 #define TCL_INVOKE_NO_TRACEBACK	(1<<2)
 
 /*
- * The structure used as the internal representation of Tcl list
- * objects. This is an array of pointers to the element objects. This array
- * is grown (reallocated and copied) as necessary to hold all the list's
- * element pointers. The array might contain more slots than currently used
- * to hold all element pointers. This is done to make append operations
+ * The structure used as the internal representation of Tcl list objects. This
+ * struct is grown (reallocated and copied) as necessary to hold all the
+ * list's element pointers. The struct might contain more slots than currently
+ * used to hold all element pointers. This is done to make append operations
  * faster.
  */
 
 typedef struct List {
+    int refCount;
     int maxElemCount;		/* Total number of element array slots. */
     int elemCount;		/* Current number of list elements. */
-    Tcl_Obj **elements;		/* Array of pointers to element objects. */
+    int canonicalFlag;		/* Set if the string representation was
+				 * derived from the list representation. May
+				 * be ignored if there is no string rep at
+				 * all.*/
+    Tcl_Obj *elements;		/* First list element; the struct is grown to
+				 * accomodate all elements. */
 } List;
 
+#define LIST_MAX \
+	(1 + (int)(((size_t)UINT_MAX - sizeof(List))/sizeof(Tcl_Obj *)))
+
+/*
+ * Macro used to get the elements of a list object.
+ */
+
+#define ListRepPtr(listPtr) \
+    ((List *) (listPtr)->internalRep.twoPtrValue.ptr1)
+
+#define ListSetIntRep(objPtr, listRepPtr) \
+    (objPtr)->internalRep.twoPtrValue.ptr1 = (void *)(listRepPtr), \
+    (objPtr)->internalRep.twoPtrValue.ptr2 = NULL, \
+    (listRepPtr)->refCount++, \
+    (objPtr)->typePtr = &tclListType
+
+#define ListObjGetElements(listPtr, objc, objv) \
+    ((objv) = &(ListRepPtr(listPtr)->elements), \
+     (objc) = ListRepPtr(listPtr)->elemCount)
+
+#define ListObjLength(listPtr, len) \
+    ((len) = ListRepPtr(listPtr)->elemCount)
+
+#define ListObjIsCanonical(listPtr) \
+    (((listPtr)->bytes == NULL) || ListRepPtr(listPtr)->canonicalFlag)
+
+#define TclListObjGetElements(interp, listPtr, objcPtr, objvPtr) \
+    (((listPtr)->typePtr == &tclListType) \
+	    ? ((ListObjGetElements((listPtr), *(objcPtr), *(objvPtr))), TCL_OK)\
+	    : Tcl_ListObjGetElements((interp), (listPtr), (objcPtr), (objvPtr)))
+
+#define TclListObjLength(interp, listPtr, lenPtr) \
+    (((listPtr)->typePtr == &tclListType) \
+	    ? ((ListObjLength((listPtr), *(lenPtr))), TCL_OK)\
+	    : Tcl_ListObjLength((interp), (listPtr), (lenPtr)))
+
+#define TclListObjIsCanonical(listPtr) \
+    (((listPtr)->typePtr == &tclListType) ? ListObjIsCanonical((listPtr)) : 0)
+
+/*
+ * Macros providing a faster path to integers: Tcl_GetLongFromObj everywhere,
+ * Tcl_GetIntFromObj and TclGetIntForIndex on platforms where longs are ints.
+ *
+ * WARNING: these macros eval their args more than once.
+ */
+
+#define TclGetLongFromObj(interp, objPtr, longPtr) \
+    (((objPtr)->typePtr == &tclIntType)	\
+	    ? ((*(longPtr) = (objPtr)->internalRep.longValue), TCL_OK) \
+	    : Tcl_GetLongFromObj((interp), (objPtr), (longPtr)))
+
+#if (LONG_MAX == INT_MAX)
+#define TclGetIntFromObj(interp, objPtr, intPtr) \
+    (((objPtr)->typePtr == &tclIntType)	\
+	    ? ((*(intPtr) = (objPtr)->internalRep.longValue), TCL_OK) \
+	    : Tcl_GetIntFromObj((interp), (objPtr), (intPtr)))
+#define TclGetIntForIndexM(interp, objPtr, endValue, idxPtr) \
+    (((objPtr)->typePtr == &tclIntType)	\
+	    ? ((*(idxPtr) = (objPtr)->internalRep.longValue), TCL_OK) \
+	    : TclGetIntForIndex((interp), (objPtr), (endValue), (idxPtr)))
+#else
+#define TclGetIntFromObj(interp, objPtr, intPtr) \
+    Tcl_GetIntFromObj((interp), (objPtr), (intPtr))
+#define TclGetIntForIndexM(interp, objPtr, ignore, idxPtr)	\
+    TclGetIntForIndex(interp, objPtr, ignore, idxPtr)
+#endif
 
 /*
- * The following types are used for getting and storing platform-specific
- * file attributes in tclFCmd.c and the various platform-versions of
- * that file. This is done to have as much common code as possible
- * in the file attributes code. For more information about the callbacks,
- * see TclFileAttrsCmd in tclFCmd.c.
+ * Flag values for TclTraceDictPath().
+ *
+ * DICT_PATH_READ indicates that all entries on the path must exist but no
+ * updates will be needed.
+ *
+ * DICT_PATH_UPDATE indicates that we are going to be doing an update at the
+ * tip of the path, so duplication of shared objects should be done along the
+ * way.
+ *
+ * DICT_PATH_EXISTS indicates that we are performing an existance test and a
+ * lookup failure should therefore not be an error. If (and only if) this flag
+ * is set, TclTraceDictPath() will return the special value
+ * DICT_PATH_NON_EXISTENT if the path is not traceable.
+ *
+ * DICT_PATH_CREATE (which also requires the DICT_PATH_UPDATE bit to be set)
+ * indicates that we are to create non-existant dictionaries on the path.
  */
 
-typedef int (TclGetFileAttrProc) _ANSI_ARGS_((Tcl_Interp *interp,
-	int objIndex, Tcl_Obj *fileName, Tcl_Obj **attrObjPtrPtr));
-typedef int (TclSetFileAttrProc) _ANSI_ARGS_((Tcl_Interp *interp,
-	int objIndex, Tcl_Obj *fileName, Tcl_Obj *attrObjPtr));
+#define DICT_PATH_READ		0
+#define DICT_PATH_UPDATE	1
+#define DICT_PATH_EXISTS	2
+#define DICT_PATH_CREATE	5
+
+#define DICT_PATH_NON_EXISTENT	((Tcl_Obj *) (void *) 1)
+
+/*
+ *----------------------------------------------------------------
+ * Data structures related to the filesystem internals
+ *----------------------------------------------------------------
+ */
+
+/*
+ * The version_2 filesystem is private to Tcl. As and when these changes have
+ * been thoroughly tested and investigated a new public filesystem interface
+ * will be released. The aim is more versatile virtual filesystem interfaces,
+ * more efficiency in 'path' manipulation and usage, and cleaner filesystem
+ * code internally.
+ */
+
+#define TCL_FILESYSTEM_VERSION_2	((Tcl_FSVersion) 0x2)
+typedef ClientData (TclFSGetCwdProc2)(ClientData clientData);
+
+/*
+ * The following types are used for getting and storing platform-specific file
+ * attributes in tclFCmd.c and the various platform-versions of that file.
+ * This is done to have as much common code as possible in the file attributes
+ * code. For more information about the callbacks, see TclFileAttrsCmd in
+ * tclFCmd.c.
+ */
+
+typedef int (TclGetFileAttrProc)(Tcl_Interp *interp, int objIndex,
+	Tcl_Obj *fileName, Tcl_Obj **attrObjPtrPtr);
+typedef int (TclSetFileAttrProc)(Tcl_Interp *interp, int objIndex,
+	Tcl_Obj *fileName, Tcl_Obj *attrObjPtr);
 
 typedef struct TclFileAttrProcs {
-    TclGetFileAttrProc *getProc;	/* The procedure for getting attrs. */
-    TclSetFileAttrProc *setProc;	/* The procedure for setting attrs. */
+    TclGetFileAttrProc *getProc;/* The procedure for getting attrs. */
+    TclSetFileAttrProc *setProc;/* The procedure for setting attrs. */
 } TclFileAttrProcs;
 
 /*
  * Opaque handle used in pipeline routines to encapsulate platform-dependent
- * state. 
+ * state.
  */
 
 typedef struct TclFile_ *TclFile;
-    
-/*
- * Opaque names for platform specific types.
- */
-
-typedef struct TclpTime_t_    *TclpTime_t;
-typedef struct TclpTime_t_    *CONST TclpTime_t_CONST;
 
 /*
- * The "globParameters" argument of the function TclGlob is an
- * or'ed combination of the following values:
+ * The "globParameters" argument of the function TclGlob is an or'ed
+ * combination of the following values:
  */
 
-#define TCL_GLOBMODE_NO_COMPLAIN      1
-#define TCL_GLOBMODE_JOIN             2
-#define TCL_GLOBMODE_DIR              4
-#define TCL_GLOBMODE_TAILS            8
+#define TCL_GLOBMODE_NO_COMPLAIN	1
+#define TCL_GLOBMODE_JOIN		2
+#define TCL_GLOBMODE_DIR		4
+#define TCL_GLOBMODE_TAILS		8
+
+typedef enum Tcl_PathPart {
+    TCL_PATH_DIRNAME,
+    TCL_PATH_TAIL,
+    TCL_PATH_EXTENSION,
+    TCL_PATH_ROOT
+} Tcl_PathPart;
 
 /*
  *----------------------------------------------------------------
@@ -1794,12 +2289,10 @@ typedef struct TclpTime_t_    *CONST TclpTime_t_CONST;
  *----------------------------------------------------------------
  */
 
-typedef int (TclStatProc_) _ANSI_ARGS_((CONST char *path, Tcl_StatBuf *buf));
-typedef int (TclAccessProc_) _ANSI_ARGS_((CONST char *path, int mode));
-typedef Tcl_Channel (TclOpenFileChannelProc_) _ANSI_ARGS_((Tcl_Interp *interp,
-	CONST char *fileName, CONST char *modeString,
-	int permissions));
-
+typedef int (TclStatProc_)(CONST char *path, struct stat *buf);
+typedef int (TclAccessProc_)(CONST char *path, int mode);
+typedef Tcl_Channel (TclOpenFileChannelProc_)(Tcl_Interp *interp,
+	CONST char *fileName, CONST char *modeString, int permissions);
 
 /*
  *----------------------------------------------------------------
@@ -1812,324 +2305,463 @@ typedef Tcl_ObjCmdProc *TclObjCmdProcType;
 
 /*
  *----------------------------------------------------------------
+ * Data structures for process-global values.
+ *----------------------------------------------------------------
+ */
+
+typedef void (TclInitProcessGlobalValueProc)(char **valuePtr, int *lengthPtr,
+	Tcl_Encoding *encodingPtr);
+
+/*
+ * A ProcessGlobalValue struct exists for each internal value in Tcl that is
+ * to be shared among several threads. Each thread sees a (Tcl_Obj) copy of
+ * the value, and the master is kept as a counted string, with epoch and mutex
+ * control. Each ProcessGlobalValue struct should be a static variable in some
+ * file.
+ */
+
+typedef struct ProcessGlobalValue {
+    int epoch;			/* Epoch counter to detect changes in the
+				 * master value. */
+    int numBytes;		/* Length of the master string. */
+    char *value;		/* The master string value. */
+    Tcl_Encoding encoding;	/* system encoding when master string was
+				 * initialized. */
+    TclInitProcessGlobalValueProc *proc;
+    				/* A procedure to initialize the master string
+				 * copy when a "get" request comes in before
+				 * any "set" request has been received. */
+    Tcl_Mutex mutex;		/* Enforce orderly access from multiple
+				 * threads. */
+    Tcl_ThreadDataKey key;	/* Key for per-thread data holding the
+				 * (Tcl_Obj) copy for each thread. */
+} ProcessGlobalValue;
+
+/*
+ *----------------------------------------------------------------------
+ * Flags for TclParseNumber
+ *----------------------------------------------------------------------
+ */
+
+#define TCL_PARSE_DECIMAL_ONLY		1
+				/* Leading zero doesn't denote octal or
+				 * hex. */
+#define TCL_PARSE_OCTAL_ONLY		2
+				/* Parse octal even without prefix. */
+#define TCL_PARSE_HEXADECIMAL_ONLY	4
+				/* Parse hexadecimal even without prefix. */
+#define TCL_PARSE_INTEGER_ONLY		8
+				/* Disable floating point parsing. */
+#define TCL_PARSE_SCAN_PREFIXES		16
+				/* Use [scan] rules dealing with 0?
+				 * prefixes. */
+#define TCL_PARSE_NO_WHITESPACE		32
+				/* Reject leading/trailing whitespace. */
+
+/*
+ *----------------------------------------------------------------------
+ * Type values TclGetNumberFromObj
+ *----------------------------------------------------------------------
+ */
+
+#define TCL_NUMBER_LONG		1
+#define TCL_NUMBER_WIDE		2
+#define TCL_NUMBER_BIG		3
+#define TCL_NUMBER_DOUBLE	4
+#define TCL_NUMBER_NAN		5
+
+/*
+ *----------------------------------------------------------------
  * Variables shared among Tcl modules but not used by the outside world.
  *----------------------------------------------------------------
  */
 
-extern Tcl_Time			tclBlockTime;
-extern int			tclBlockTimeSet;
-extern char *			tclExecutableName;
-extern char *			tclNativeExecutableName;
-extern char *			tclDefaultEncodingDir;
-extern Tcl_ChannelType		tclFileChannelType;
-extern char *			tclMemDumpFileName;
-extern TclPlatformType		tclPlatform;
-extern Tcl_NotifierProcs	tclOriginalNotifier;
+MODULE_SCOPE char *tclNativeExecutableName;
+MODULE_SCOPE int tclFindExecutableSearchDone;
+MODULE_SCOPE char *tclMemDumpFileName;
+MODULE_SCOPE TclPlatformType tclPlatform;
+MODULE_SCOPE Tcl_NotifierProcs tclOriginalNotifier;
+
+/*
+ * TIP #233 (Virtualized Time)
+ * Data for the time hooks, if any.
+ */
+
+MODULE_SCOPE Tcl_GetTimeProc *tclGetTimeProcPtr;
+MODULE_SCOPE Tcl_ScaleTimeProc *tclScaleTimeProcPtr;
+MODULE_SCOPE ClientData tclTimeClientData;
 
 /*
  * Variables denoting the Tcl object types defined in the core.
  */
 
-extern Tcl_ObjType	tclBooleanType;
-extern Tcl_ObjType	tclByteArrayType;
-extern Tcl_ObjType	tclByteCodeType;
-extern Tcl_ObjType	tclDoubleType;
-extern Tcl_ObjType	tclEndOffsetType;
-extern Tcl_ObjType	tclIntType;
-extern Tcl_ObjType	tclListType;
-extern Tcl_ObjType	tclProcBodyType;
-extern Tcl_ObjType	tclStringType;
-extern Tcl_ObjType	tclArraySearchType;
-extern Tcl_ObjType	tclIndexType;
-extern Tcl_ObjType	tclNsNameType;
-extern Tcl_ObjType	tclWideIntType;
+MODULE_SCOPE Tcl_ObjType tclBignumType;
+MODULE_SCOPE Tcl_ObjType tclBooleanType;
+MODULE_SCOPE Tcl_ObjType tclByteArrayType;
+MODULE_SCOPE Tcl_ObjType tclByteCodeType;
+MODULE_SCOPE Tcl_ObjType tclDoubleType;
+MODULE_SCOPE Tcl_ObjType tclEndOffsetType;
+MODULE_SCOPE Tcl_ObjType tclIntType;
+MODULE_SCOPE Tcl_ObjType tclListType;
+MODULE_SCOPE Tcl_ObjType tclDictType;
+MODULE_SCOPE Tcl_ObjType tclProcBodyType;
+MODULE_SCOPE Tcl_ObjType tclStringType;
+MODULE_SCOPE Tcl_ObjType tclArraySearchType;
+MODULE_SCOPE Tcl_ObjType tclEnsembleCmdType;
+#ifndef NO_WIDE_TYPE
+MODULE_SCOPE Tcl_ObjType tclWideIntType;
+#endif
+MODULE_SCOPE Tcl_ObjType tclRegexpType;
 
 /*
  * Variables denoting the hash key types defined in the core.
  */
 
-extern Tcl_HashKeyType tclArrayHashKeyType;
-extern Tcl_HashKeyType tclOneWordHashKeyType;
-extern Tcl_HashKeyType tclStringHashKeyType;
-extern Tcl_HashKeyType tclObjHashKeyType;
+MODULE_SCOPE Tcl_HashKeyType tclArrayHashKeyType;
+MODULE_SCOPE Tcl_HashKeyType tclOneWordHashKeyType;
+MODULE_SCOPE Tcl_HashKeyType tclStringHashKeyType;
+MODULE_SCOPE Tcl_HashKeyType tclObjHashKeyType;
 
 /*
  * The head of the list of free Tcl objects, and the total number of Tcl
  * objects ever allocated and freed.
  */
 
-extern Tcl_Obj *	tclFreeObjList;
+MODULE_SCOPE Tcl_Obj *	tclFreeObjList;
 
 #ifdef TCL_COMPILE_STATS
-extern long		tclObjsAlloced;
-extern long		tclObjsFreed;
+MODULE_SCOPE long	tclObjsAlloced;
+MODULE_SCOPE long	tclObjsFreed;
 #define TCL_MAX_SHARED_OBJ_STATS 5
-extern long		tclObjsShared[TCL_MAX_SHARED_OBJ_STATS];
+MODULE_SCOPE long	tclObjsShared[TCL_MAX_SHARED_OBJ_STATS];
 #endif /* TCL_COMPILE_STATS */
 
 /*
- * Pointer to a heap-allocated string of length zero that the Tcl core uses
- * as the value of an empty string representation for an object. This value
- * is shared by all new objects allocated by Tcl_NewObj.
+ * Pointer to a heap-allocated string of length zero that the Tcl core uses as
+ * the value of an empty string representation for an object. This value is
+ * shared by all new objects allocated by Tcl_NewObj.
  */
 
-extern char *		tclEmptyStringRep;
-extern char		tclEmptyString;
+MODULE_SCOPE char *	tclEmptyStringRep;
+MODULE_SCOPE char	tclEmptyString;
+
+/* Flags for conversion of doubles to digit strings */
+
+#define TCL_DD_SHORTEST 		0x4
+				/* Use the shortest possible string */
+#define TCL_DD_STEELE   		0x5
+				/* Use the original Steele&White algorithm */
+#define TCL_DD_E_FORMAT 		0x2
+				/* Use a fixed-length string of digits,
+				 * suitable for E format*/
+#define TCL_DD_F_FORMAT 		0x3
+				/* Use a fixed number of digits after the
+				 * decimal point, suitable for F format */
+
+#define TCL_DD_SHORTEN_FLAG 		0x4
+				/* Allow return of a shorter digit string
+				 * if it converts losslessly */
+#define TCL_DD_NO_QUICK 		0x8
+				/* Debug flag: forbid quick FP conversion */
+
+#define TCL_DD_CONVERSION_TYPE_MASK	0x3
+				/* Mask to isolate the conversion type */
+#define TCL_DD_STEELE0 			0x1
+				/* 'Steele&White' after masking */
+#define TCL_DD_SHORTEST0		0x0
+				/* 'Shortest possible' after masking */
 
 /*
  *----------------------------------------------------------------
- * Procedures shared among Tcl modules but not used by the outside
- * world:
+ * Procedures shared among Tcl modules but not used by the outside world:
  *----------------------------------------------------------------
  */
 
-#ifdef TCL_TIP280
-EXTERN void             TclAdvanceLines _ANSI_ARGS_((int* line, CONST char* start,
-						     CONST char* end));
-EXTERN void             TclAdvanceContinuations _ANSI_ARGS_((int* line, int** next,
-						     int loc));
-EXTERN ContLineLoc*     TclContinuationsEnter _ANSI_ARGS_((Tcl_Obj* objPtr, int num,
-							   int* loc));
-EXTERN void             TclContinuationsEnterDerived _ANSI_ARGS_((Tcl_Obj* objPtr,
-								  int start, int* clNext));
-EXTERN ContLineLoc*     TclContinuationsGet _ANSI_ARGS_((Tcl_Obj* objPtr));
-
-EXTERN void         TclContinuationsCopy _ANSI_ARGS_((Tcl_Obj* objPtr, Tcl_Obj* originObjPtr));
-
-#endif
-EXTERN int		TclArraySet _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *arrayNameObj, Tcl_Obj *arrayElemObj));
-EXTERN int		TclCheckBadOctal _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *value));
-EXTERN void		TclDeleteNamespaceVars _ANSI_ARGS_((Namespace *nsPtr));
-
-#ifdef TCL_TIP280
-EXTERN int              TclEvalObjEx _ANSI_ARGS_((Tcl_Interp *interp,
-						  register Tcl_Obj *objPtr,
-						  int flags,
-						  CONST CmdFrame* invoker,
-						  int word));
-
-EXTERN void TclArgumentEnter   _ANSI_ARGS_((Tcl_Interp* interp,
-					    Tcl_Obj* objv[], int objc, CmdFrame* cf));
-EXTERN void TclArgumentRelease _ANSI_ARGS_((Tcl_Interp* interp,
-					    Tcl_Obj* objv[], int objc));
-EXTERN void TclArgumentBCEnter _ANSI_ARGS_((Tcl_Interp* interp,
-					    Tcl_Obj* objv[], int objc,
-					    void* codePtr, CmdFrame* cfPtr, int pc));
-EXTERN void TclArgumentBCRelease _ANSI_ARGS_((Tcl_Interp* interp,
-					      Tcl_Obj* objv[], int objc,
-					      void* codePtr, int pc));
-
-EXTERN void TclArgumentGet     _ANSI_ARGS_((Tcl_Interp* interp, Tcl_Obj* obj,
-					    CmdFrame** cfPtrPtr, int* wordPtr));
+MODULE_SCOPE void       TclAdvanceContinuations(int* line, int** next, int loc);
+MODULE_SCOPE void       TclAdvanceLines(int *line, const char *start,
+			    const char *end);
+MODULE_SCOPE void       TclArgumentEnter(Tcl_Interp* interp,
+			    Tcl_Obj* objv[], int objc, CmdFrame* cf);
+MODULE_SCOPE void       TclArgumentRelease(Tcl_Interp* interp,
+			    Tcl_Obj* objv[], int objc);
+MODULE_SCOPE void       TclArgumentGet(Tcl_Interp* interp, Tcl_Obj* obj,
+			    CmdFrame **cfPtrPtr, int *wordPtr);
+MODULE_SCOPE void       TclArgumentBCEnter(Tcl_Interp *interp,
+			    Tcl_Obj* objv[], int objc,
+			    void *codePtr, CmdFrame *cfPtr, int pc);
+MODULE_SCOPE void       TclArgumentBCRelease(Tcl_Interp *interp,
+			    Tcl_Obj *objv[], int objc,
+			    void *codePtr, int pc);
+MODULE_SCOPE int	TclArraySet(Tcl_Interp *interp,
+			    Tcl_Obj *arrayNameObj, Tcl_Obj *arrayElemObj);
+MODULE_SCOPE double	TclBignumToDouble(mp_int *bignum);
+MODULE_SCOPE int	TclByteArrayMatch(const unsigned char *string,
+			    int strLen, const unsigned char *pattern,
+			    int ptnLen, int flags);
+MODULE_SCOPE double	TclCeil(mp_int *a);
+MODULE_SCOPE int	TclCheckBadOctal(Tcl_Interp *interp, const char *value);
+MODULE_SCOPE int	TclChanCaughtErrorBypass(Tcl_Interp *interp,
+			    Tcl_Channel chan);
+MODULE_SCOPE ContLineLoc* TclContinuationsEnter(Tcl_Obj *objPtr, int num,
+			    int *loc);
+MODULE_SCOPE void	TclContinuationsEnterDerived(Tcl_Obj *objPtr,
+			    int start, int *clNext);
+MODULE_SCOPE ContLineLoc* TclContinuationsGet(Tcl_Obj *objPtr);
+MODULE_SCOPE void	TclContinuationsCopy(Tcl_Obj *objPtr,
+			    Tcl_Obj *originObjPtr);
+MODULE_SCOPE int	TclConvertElement(CONST char *src, int length,
+			    char *dst, int flags);
+MODULE_SCOPE void	TclDeleteNamespaceVars(Namespace *nsPtr);
+/* TIP #280 - Modified token based evulation, with line information. */
+MODULE_SCOPE int	TclEvalEx(Tcl_Interp *interp, const char *script,
+			    int numBytes, int flags, int line,
+			    int *clNextOuter, CONST char *outerScript);
+MODULE_SCOPE int	TclFileAttrsCmd(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclFileCopyCmd(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclFileDeleteCmd(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclFileMakeDirsCmd(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclFileRenameCmd(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE void	TclCreateLateExitHandler(Tcl_ExitProc *proc,
+			    ClientData clientData);
+MODULE_SCOPE void	TclDeleteLateExitHandler(Tcl_ExitProc *proc,
+			    ClientData clientData);
+MODULE_SCOPE void	TclFinalizeAllocSubsystem(void);
+MODULE_SCOPE void	TclFinalizeAsync(void);
+MODULE_SCOPE void	TclFinalizeDoubleConversion(void);
+MODULE_SCOPE void	TclFinalizeEncodingSubsystem(void);
+MODULE_SCOPE void	TclFinalizeEnvironment(void);
+MODULE_SCOPE void	TclFinalizeExecution(void);
+MODULE_SCOPE void	TclFinalizeIOSubsystem(void);
+MODULE_SCOPE void	TclFinalizeFilesystem(void);
+MODULE_SCOPE void	TclResetFilesystem(void);
+MODULE_SCOPE void	TclFinalizeLoad(void);
+MODULE_SCOPE void	TclFinalizeLock(void);
+MODULE_SCOPE void	TclFinalizeMemorySubsystem(void);
+MODULE_SCOPE void	TclFinalizeNotifier(void);
+MODULE_SCOPE void	TclFinalizeObjects(void);
+MODULE_SCOPE void	TclFinalizePreserve(void);
+MODULE_SCOPE void	TclFinalizeSynchronization(void);
+MODULE_SCOPE void	TclFinalizeThreadAlloc(void);
+MODULE_SCOPE void	TclFinalizeThreadData(void);
+MODULE_SCOPE void	TclFinalizeThreadObjects(void);
+MODULE_SCOPE double	TclFloor(mp_int *a);
+MODULE_SCOPE void	TclFormatNaN(double value, char *buffer);
+MODULE_SCOPE int	TclFSFileAttrIndex(Tcl_Obj *pathPtr,
+			    const char *attributeName, int *indexPtr);
+MODULE_SCOPE void	TclFSUnloadTempFile(Tcl_LoadHandle loadHandle);
+MODULE_SCOPE int *	TclGetAsyncReadyPtr(void);
+MODULE_SCOPE Tcl_Obj *	TclGetBgErrorHandler(Tcl_Interp *interp);
+MODULE_SCOPE int	TclGetChannelFromObj(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr, Tcl_Channel *chanPtr,
+			    int *modePtr, int flags);
+MODULE_SCOPE int	TclGetNumberFromObj(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr, ClientData *clientDataPtr,
+			    int *typePtr);
+MODULE_SCOPE int	TclGetOpenModeEx(Tcl_Interp *interp,
+			    const char *modeString, int *seekFlagPtr,
+			    int *binaryPtr);
+MODULE_SCOPE Tcl_Obj *	TclGetProcessGlobalValue(ProcessGlobalValue *pgvPtr);
+MODULE_SCOPE const char *TclGetSrcInfoForCmd(Interp *iPtr, int *lenPtr);
+MODULE_SCOPE int	TclGlob(Tcl_Interp *interp, char *pattern,
+			    Tcl_Obj *unquotedPrefix, int globFlags,
+			    Tcl_GlobTypeData *types);
+MODULE_SCOPE int	TclIncrObj(Tcl_Interp *interp, Tcl_Obj *valuePtr,
+			    Tcl_Obj *incrPtr);
+MODULE_SCOPE Tcl_Obj *	TclIncrObjVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+			    Tcl_Obj *part2Ptr, Tcl_Obj *incrPtr, int flags);
+MODULE_SCOPE int	TclInfoExistsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE Tcl_Obj *	TclInfoFrame(Tcl_Interp *interp, CmdFrame *framePtr);
+MODULE_SCOPE int	TclInfoGlobalsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclInfoLocalsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclInfoVarsCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE void	TclInitAlloc(void);
+MODULE_SCOPE void	TclInitDbCkalloc(void);
+MODULE_SCOPE void	TclInitDoubleConversion(void);
+MODULE_SCOPE void	TclInitEmbeddedConfigurationInformation(
+			    Tcl_Interp *interp);
+MODULE_SCOPE void	TclInitEncodingSubsystem(void);
+MODULE_SCOPE void	TclInitIOSubsystem(void);
+MODULE_SCOPE void	TclInitLimitSupport(Tcl_Interp *interp);
+MODULE_SCOPE void	TclInitNamespaceSubsystem(void);
+MODULE_SCOPE void	TclInitNotifier(void);
+MODULE_SCOPE void	TclInitObjSubsystem(void);
+MODULE_SCOPE void	TclInitSubsystems(void);
+MODULE_SCOPE int	TclInterpReady(Tcl_Interp *interp);
+MODULE_SCOPE int	TclIsLocalScalar(const char *src, int len);
+MODULE_SCOPE int	TclIsSpaceProc(char byte);
+MODULE_SCOPE int	TclJoinThread(Tcl_ThreadId id, int *result);
+MODULE_SCOPE void	TclLimitRemoveAllHandlers(Tcl_Interp *interp);
+MODULE_SCOPE Tcl_Obj *	TclLindexList(Tcl_Interp *interp,
+			    Tcl_Obj *listPtr, Tcl_Obj *argPtr);
+MODULE_SCOPE Tcl_Obj *	TclLindexFlat(Tcl_Interp *interp, Tcl_Obj *listPtr,
+			    int indexCount, Tcl_Obj *const indexArray[]);
+/* TIP #280 */
+MODULE_SCOPE void	TclListLines(Tcl_Obj *listObj, int line, int n,
+			    int *lines, Tcl_Obj *const *elems);
+MODULE_SCOPE Tcl_Obj *	TclListObjCopy(Tcl_Interp *interp, Tcl_Obj *listPtr);
+MODULE_SCOPE int	TclLoadFile(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+			    int symc, const char *symbols[],
+			    Tcl_PackageInitProc **procPtrs[],
+			    Tcl_LoadHandle *handlePtr,
+			    ClientData *clientDataPtr,
+			    Tcl_FSUnloadFileProc **unloadProcPtr);
+MODULE_SCOPE Tcl_Obj *	TclLsetList(Tcl_Interp *interp, Tcl_Obj *listPtr,
+			    Tcl_Obj *indexPtr, Tcl_Obj *valuePtr);
+MODULE_SCOPE Tcl_Obj *	TclLsetFlat(Tcl_Interp *interp, Tcl_Obj *listPtr,
+			    int indexCount, Tcl_Obj *const indexArray[],
+			    Tcl_Obj *valuePtr);
+MODULE_SCOPE Tcl_Command TclMakeEnsemble(Tcl_Interp *interp, const char *name,
+			    const EnsembleImplMap map[]);
+MODULE_SCOPE int	TclMaxListLength(CONST char *bytes, int numBytes,
+			    CONST char **endPtr);
+MODULE_SCOPE int	TclMergeReturnOptions(Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[], Tcl_Obj **optionsPtrPtr,
+			    int *codePtr, int *levelPtr);
+MODULE_SCOPE int	TclNokia770Doubles();
+MODULE_SCOPE void	TclObjVarErrMsg(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
+			    Tcl_Obj *part2Ptr, const char *operation,
+			    const char *reason, int index);
+MODULE_SCOPE int	TclObjInvokeNamespace(Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[],
+			    Tcl_Namespace *nsPtr, int flags);
+MODULE_SCOPE int	TclObjUnsetVar2(Tcl_Interp *interp,
+			    Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags);
+MODULE_SCOPE int	TclParseBackslash(const char *src,
+			    int numBytes, int *readPtr, char *dst);
+MODULE_SCOPE int	TclParseHex(const char *src, int numBytes,
+			    Tcl_UniChar *resultPtr);
+MODULE_SCOPE int	TclParseNumber(Tcl_Interp *interp, Tcl_Obj *objPtr,
+			    const char *expected, const char *bytes,
+			    int numBytes, const char **endPtrPtr, int flags);
+MODULE_SCOPE void	TclParseInit(Tcl_Interp *interp, const char *string,
+			    int numBytes, Tcl_Parse *parsePtr);
+MODULE_SCOPE int	TclParseAllWhiteSpace(const char *src, int numBytes);
+MODULE_SCOPE int	TclProcessReturn(Tcl_Interp *interp,
+			    int code, int level, Tcl_Obj *returnOpts);
+#ifndef TCL_NO_STACK_CHECK
+MODULE_SCOPE int        TclpGetCStackParams(int **stackBoundPtr);
 #endif
-
-EXTERN void		TclExpandTokenArray _ANSI_ARGS_((
-			    Tcl_Parse *parsePtr));
-EXTERN int		TclFileAttrsCmd _ANSI_ARGS_((Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-EXTERN int		TclFileCopyCmd _ANSI_ARGS_((Tcl_Interp *interp, 
-			    int objc, Tcl_Obj *CONST objv[])) ;
-EXTERN int		TclFileDeleteCmd _ANSI_ARGS_((Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-EXTERN int		TclFileMakeDirsCmd _ANSI_ARGS_((Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[])) ;
-EXTERN int		TclFileRenameCmd _ANSI_ARGS_((Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[])) ;
-EXTERN void		TclCreateLateExitHandler (Tcl_ExitProc * proc,
-						   ClientData clientData);
-EXTERN void		TclDeleteLateExitHandler (Tcl_ExitProc * proc,
-						   ClientData clientData);
-EXTERN void		TclFinalizeAllocSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeAsync _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeCompilation _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeEncodingSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeEnvironment _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeExecution _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeIOSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeFilesystem _ANSI_ARGS_((void));
-EXTERN void		TclResetFilesystem _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeLoad _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeLock _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeMemorySubsystem _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeNotifier _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeObjects _ANSI_ARGS_((void));
-EXTERN void		TclFinalizePreserve _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeSynchronization _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeThreadAlloc _ANSI_ARGS_((void));
-EXTERN void		TclFinalizeThreadData _ANSI_ARGS_((void));
-EXTERN int		TclGetEncodingFromObj _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr, Tcl_Encoding *encodingPtr));
-#ifdef TCL_TIP280
-EXTERN void             TclGetSrcInfoForPc _ANSI_ARGS_((CmdFrame* cfPtr));
+MODULE_SCOPE int	TclpObjLstat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
+MODULE_SCOPE Tcl_Obj *	TclpTempFileName(void);
+MODULE_SCOPE Tcl_Obj *	TclNewFSPathObj(Tcl_Obj *dirPtr, const char *addStrRep,
+			    int len);
+MODULE_SCOPE int	TclpDeleteFile(const char *path);
+MODULE_SCOPE void	TclpFinalizeCondition(Tcl_Condition *condPtr);
+MODULE_SCOPE void	TclpFinalizeMutex(Tcl_Mutex *mutexPtr);
+MODULE_SCOPE void	TclpFinalizePipes(void);
+MODULE_SCOPE void	TclpFinalizeSockets(void);
+MODULE_SCOPE int	TclpThreadCreate(Tcl_ThreadId *idPtr,
+			    Tcl_ThreadCreateProc proc, ClientData clientData,
+			    int stackSize, int flags);
+MODULE_SCOPE int	TclpFindVariable(const char *name, int *lengthPtr);
+MODULE_SCOPE void	TclpInitLibraryPath(char **valuePtr,
+			    int *lengthPtr, Tcl_Encoding *encodingPtr);
+MODULE_SCOPE void	TclpInitLock(void);
+MODULE_SCOPE void	TclpInitPlatform(void);
+MODULE_SCOPE void	TclpInitUnlock(void);
+MODULE_SCOPE Tcl_Obj *	TclpObjListVolumes(void);
+MODULE_SCOPE void	TclpMasterLock(void);
+MODULE_SCOPE void	TclpMasterUnlock(void);
+MODULE_SCOPE int	TclpMatchFiles(Tcl_Interp *interp, char *separators,
+			    Tcl_DString *dirPtr, char *pattern, char *tail);
+MODULE_SCOPE int	TclpObjNormalizePath(Tcl_Interp *interp,
+			    Tcl_Obj *pathPtr, int nextCheckpoint);
+MODULE_SCOPE void	TclpNativeJoinPath(Tcl_Obj *prefix, const char *joining);
+MODULE_SCOPE Tcl_Obj *	TclpNativeSplitPath(Tcl_Obj *pathPtr, int *lenPtr);
+MODULE_SCOPE Tcl_PathType TclpGetNativePathType(Tcl_Obj *pathPtr,
+			    int *driveNameLengthPtr, Tcl_Obj **driveNameRef);
+MODULE_SCOPE int	TclCrossFilesystemCopy(Tcl_Interp *interp,
+			    Tcl_Obj *source, Tcl_Obj *target);
+MODULE_SCOPE int	TclpMatchInDirectory(Tcl_Interp *interp,
+			    Tcl_Obj *resultPtr, Tcl_Obj *pathPtr,
+			    const char *pattern, Tcl_GlobTypeData *types);
+MODULE_SCOPE ClientData	TclpGetNativeCwd(ClientData clientData);
+MODULE_SCOPE Tcl_FSDupInternalRepProc TclNativeDupInternalRep;
+MODULE_SCOPE Tcl_Obj *	TclpObjLink(Tcl_Obj *pathPtr, Tcl_Obj *toPtr,
+			    int linkType);
+MODULE_SCOPE int	TclpObjChdir(Tcl_Obj *pathPtr);
+MODULE_SCOPE Tcl_Obj *	TclPathPart(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+			    Tcl_PathPart portion);
+#ifndef TclpPanic
+MODULE_SCOPE void	TclpPanic(const char *format, ...);
 #endif
-EXTERN int		TclGlob _ANSI_ARGS_((Tcl_Interp *interp,
-			    char *pattern, Tcl_Obj *unquotedPrefix, 
-			    int globFlags, Tcl_GlobTypeData* types));
-EXTERN void		TclInitAlloc _ANSI_ARGS_((void));
-EXTERN void		TclInitDbCkalloc _ANSI_ARGS_((void));
-EXTERN void		TclInitEncodingSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclInitIOSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclInitNamespaceSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclInitNotifier _ANSI_ARGS_((void));
-EXTERN void		TclInitObjSubsystem _ANSI_ARGS_((void));
-EXTERN void		TclInitSubsystems _ANSI_ARGS_((CONST char *argv0));
-EXTERN int		TclIsLocalScalar _ANSI_ARGS_((CONST char *src,
-			    int len));
-EXTERN int              TclJoinThread _ANSI_ARGS_((Tcl_ThreadId id,
-			    int* result));
-EXTERN Tcl_Obj *	TclLindexList _ANSI_ARGS_((Tcl_Interp* interp,
-						   Tcl_Obj* listPtr,
-						   Tcl_Obj* argPtr ));
-EXTERN Tcl_Obj *	TclLindexFlat _ANSI_ARGS_((Tcl_Interp* interp,
-						   Tcl_Obj* listPtr,
-						   int indexCount,
-						   Tcl_Obj *CONST indexArray[]
-						   ));
-EXTERN Tcl_Obj *	TclLsetList _ANSI_ARGS_((Tcl_Interp* interp,
-						 Tcl_Obj* listPtr,
-						 Tcl_Obj* indexPtr,
-						 Tcl_Obj* valuePtr  
-						 ));
-EXTERN Tcl_Obj *	TclLsetFlat _ANSI_ARGS_((Tcl_Interp* interp,
-						 Tcl_Obj* listPtr,
-						 int indexCount,
-						 Tcl_Obj *CONST indexArray[],
-						 Tcl_Obj* valuePtr
-						 ));
-EXTERN int              TclParseBackslash _ANSI_ARGS_((CONST char *src,
-                            int numBytes, int *readPtr, char *dst));
-EXTERN int		TclParseHex _ANSI_ARGS_((CONST char *src, int numBytes,
-                            Tcl_UniChar *resultPtr));
-EXTERN int		TclParseInteger _ANSI_ARGS_((CONST char *string,
-			    int numBytes));
-EXTERN int		TclParseWhiteSpace _ANSI_ARGS_((CONST char *src,
-			    int numBytes, Tcl_Parse *parsePtr, char *typePtr));
-#ifdef TCL_TIP280
-EXTERN int              TclWordKnownAtCompileTime _ANSI_ARGS_((Tcl_Token* token));
+MODULE_SCOPE char *	TclpReadlink(const char *fileName,
+			    Tcl_DString *linkPtr);
+#ifndef TclpReleaseFile
+MODULE_SCOPE void	TclpReleaseFile(TclFile file);
 #endif
-EXTERN int		TclpObjAccess _ANSI_ARGS_((Tcl_Obj *filename,
-			    int mode));
-EXTERN int              TclpObjLstat _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-			    Tcl_StatBuf *buf));
-EXTERN int		TclpCheckStackSpace _ANSI_ARGS_((void));
-EXTERN Tcl_Obj*         TclpTempFileName _ANSI_ARGS_((void));
-EXTERN Tcl_Obj*         TclNewFSPathObj _ANSI_ARGS_((Tcl_Obj *dirPtr, 
-			    CONST char *addStrRep, int len));
-EXTERN int              TclpDeleteFile _ANSI_ARGS_((CONST char *path));
-EXTERN void		TclpFinalizeCondition _ANSI_ARGS_((
-			    Tcl_Condition *condPtr));
-EXTERN void		TclpFinalizeMutex _ANSI_ARGS_((Tcl_Mutex *mutexPtr));
-EXTERN void		TclpFinalizePipes _ANSI_ARGS_((void));
-EXTERN void		TclpFinalizeSockets _ANSI_ARGS_((void));
-EXTERN void		TclpFinalizeThreadData _ANSI_ARGS_((
-			    Tcl_ThreadDataKey *keyPtr));
-EXTERN void		TclpFinalizeThreadDataKey _ANSI_ARGS_((
-			    Tcl_ThreadDataKey *keyPtr));
-EXTERN char *		TclpFindExecutable _ANSI_ARGS_((
-			    CONST char *argv0));
-EXTERN int		TclpFindVariable _ANSI_ARGS_((CONST char *name,
-			    int *lengthPtr));
-EXTERN int		TclpInitLibraryPath _ANSI_ARGS_((CONST char *argv0));
-EXTERN void		TclpInitLock _ANSI_ARGS_((void));
-EXTERN void		TclpInitPlatform _ANSI_ARGS_((void));
-EXTERN void		TclpInitUnlock _ANSI_ARGS_((void));
-EXTERN int              TclpLoadFile _ANSI_ARGS_((Tcl_Interp *interp, 
-				Tcl_Obj *pathPtr,
-				CONST char *sym1, CONST char *sym2, 
-				Tcl_PackageInitProc **proc1Ptr,
-				Tcl_PackageInitProc **proc2Ptr, 
-				ClientData *clientDataPtr,
-				Tcl_FSUnloadFileProc **unloadProcPtr));
-EXTERN Tcl_Obj*		TclpObjListVolumes _ANSI_ARGS_((void));
-EXTERN void		TclpMasterLock _ANSI_ARGS_((void));
-EXTERN void		TclpMasterUnlock _ANSI_ARGS_((void));
-EXTERN int		TclpMatchFiles _ANSI_ARGS_((Tcl_Interp *interp,
-			    char *separators, Tcl_DString *dirPtr,
-			    char *pattern, char *tail));
-EXTERN int              TclpObjNormalizePath _ANSI_ARGS_((Tcl_Interp *interp, 
-			    Tcl_Obj *pathPtr, int nextCheckpoint));
-EXTERN int		TclpObjCreateDirectory _ANSI_ARGS_((Tcl_Obj *pathPtr));
-EXTERN void             TclpNativeJoinPath _ANSI_ARGS_((Tcl_Obj *prefix, 
-							char *joining));
-EXTERN Tcl_Obj*         TclpNativeSplitPath _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-							 int *lenPtr));
-EXTERN Tcl_PathType     TclpGetNativePathType _ANSI_ARGS_((Tcl_Obj *pathObjPtr,
-			    int *driveNameLengthPtr, Tcl_Obj **driveNameRef));
-EXTERN int 		TclCrossFilesystemCopy _ANSI_ARGS_((Tcl_Interp *interp, 
-			    Tcl_Obj *source, Tcl_Obj *target));
-EXTERN int		TclpObjDeleteFile _ANSI_ARGS_((Tcl_Obj *pathPtr));
-EXTERN int		TclpObjCopyDirectory _ANSI_ARGS_((Tcl_Obj *srcPathPtr, 
-				Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr));
-EXTERN int		TclpObjCopyFile _ANSI_ARGS_((Tcl_Obj *srcPathPtr, 
-				Tcl_Obj *destPathPtr));
-EXTERN int		TclpObjRemoveDirectory _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-				int recursive, Tcl_Obj **errorPtr));
-EXTERN int		TclpObjRenameFile _ANSI_ARGS_((Tcl_Obj *srcPathPtr, 
-				Tcl_Obj *destPathPtr));
-EXTERN int		TclpMatchInDirectory _ANSI_ARGS_((Tcl_Interp *interp, 
-			        Tcl_Obj *resultPtr, Tcl_Obj *pathPtr, 
-				CONST char *pattern, Tcl_GlobTypeData *types));
-EXTERN Tcl_Obj*		TclpObjGetCwd _ANSI_ARGS_((Tcl_Interp *interp));
-EXTERN Tcl_FSDupInternalRepProc TclNativeDupInternalRep;
-EXTERN Tcl_Obj*		TclpObjLink _ANSI_ARGS_((Tcl_Obj *pathPtr, 
-				Tcl_Obj *toPtr, int linkType));
-EXTERN int		TclpObjChdir _ANSI_ARGS_((Tcl_Obj *pathPtr));
-EXTERN Tcl_Obj*         TclFileDirname _ANSI_ARGS_((Tcl_Interp *interp, 
-						    Tcl_Obj*pathPtr));
-EXTERN int		TclpObjStat _ANSI_ARGS_((Tcl_Obj *pathPtr, Tcl_StatBuf *buf));
-EXTERN Tcl_Channel	TclpOpenFileChannel _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *pathPtr, int mode,
-			    int permissions));
-EXTERN void		TclpPanic _ANSI_ARGS_(TCL_VARARGS(CONST char *,
-			    format));
-EXTERN char *		TclpReadlink _ANSI_ARGS_((CONST char *fileName,
-			    Tcl_DString *linkPtr));
-EXTERN void		TclpReleaseFile _ANSI_ARGS_((TclFile file));
-EXTERN void		TclpSetVariables _ANSI_ARGS_((Tcl_Interp *interp));
-EXTERN void		TclpUnloadFile _ANSI_ARGS_((Tcl_LoadHandle loadHandle));
-EXTERN VOID *		TclpThreadDataKeyGet _ANSI_ARGS_((
-			    Tcl_ThreadDataKey *keyPtr));
-EXTERN void		TclpThreadDataKeyInit _ANSI_ARGS_((
-			    Tcl_ThreadDataKey *keyPtr));
-EXTERN void		TclpThreadDataKeySet _ANSI_ARGS_((
-			    Tcl_ThreadDataKey *keyPtr, VOID *data));
-EXTERN int		TclpThreadCreate _ANSI_ARGS_((
-			    Tcl_ThreadId *idPtr,
-			    Tcl_ThreadCreateProc proc,
-			    ClientData clientData,
-			    int stackSize, int flags));
-EXTERN void		TclpThreadExit _ANSI_ARGS_((int status));
-EXTERN void		TclRememberCondition _ANSI_ARGS_((Tcl_Condition *mutex));
-EXTERN void		TclRememberDataKey _ANSI_ARGS_((Tcl_ThreadDataKey *mutex));
-EXTERN VOID             TclRememberJoinableThread _ANSI_ARGS_((Tcl_ThreadId id));
-EXTERN void		TclRememberMutex _ANSI_ARGS_((Tcl_Mutex *mutex));
-EXTERN VOID             TclSignalExitThread _ANSI_ARGS_((Tcl_ThreadId id,
-			     int result));
-EXTERN void		TclTransferResult _ANSI_ARGS_((Tcl_Interp *sourceInterp,
-			    int result, Tcl_Interp *targetInterp));
-EXTERN Tcl_Obj*         TclpNativeToNormalized 
-                            _ANSI_ARGS_((ClientData clientData));
-EXTERN Tcl_Obj*	        TclpFilesystemPathType
-					_ANSI_ARGS_((Tcl_Obj* pathObjPtr));
-EXTERN Tcl_PackageInitProc* TclpFindSymbol _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_LoadHandle loadHandle, CONST char *symbol));
-EXTERN int              TclpDlopen _ANSI_ARGS_((Tcl_Interp *interp, 
-			    Tcl_Obj *pathPtr, 
-	                    Tcl_LoadHandle *loadHandle, 
-		            Tcl_FSUnloadFileProc **unloadProcPtr));
-EXTERN int              TclpUtime _ANSI_ARGS_((Tcl_Obj *pathPtr,
-					       struct utimbuf *tval));
-
+MODULE_SCOPE void	TclpSetInterfaces(void);
+MODULE_SCOPE void	TclpSetVariables(Tcl_Interp *interp);
+MODULE_SCOPE void	TclpUnloadFile(Tcl_LoadHandle loadHandle);
+MODULE_SCOPE void *	TclpThreadDataKeyGet(Tcl_ThreadDataKey *keyPtr);
+MODULE_SCOPE void	TclpThreadDataKeySet(Tcl_ThreadDataKey *keyPtr,
+			    void *data);
+MODULE_SCOPE void	TclpThreadExit(int status);
+MODULE_SCOPE size_t	TclpThreadGetStackSize(void);
+MODULE_SCOPE void	TclRememberCondition(Tcl_Condition *mutex);
+MODULE_SCOPE void	TclRememberJoinableThread(Tcl_ThreadId id);
+MODULE_SCOPE void	TclRememberMutex(Tcl_Mutex *mutex);
+MODULE_SCOPE void	TclRemoveScriptLimitCallbacks(Tcl_Interp *interp);
+MODULE_SCOPE int	TclReToGlob(Tcl_Interp *interp, const char *reStr,
+			    int reStrLen, Tcl_DString *dsPtr, int *flagsPtr);
+MODULE_SCOPE int	TclScanElement(CONST char *string, int length,
+			    int *flagPtr);
+MODULE_SCOPE void	TclSetBgErrorHandler(Tcl_Interp *interp,
+			    Tcl_Obj *cmdPrefix);
+MODULE_SCOPE void	TclSetBignumIntRep(Tcl_Obj *objPtr,
+			    mp_int *bignumValue);
+MODULE_SCOPE void	TclSetCmdNameObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+			    Command *cmdPtr);
+MODULE_SCOPE void	TclSetProcessGlobalValue(ProcessGlobalValue *pgvPtr,
+			    Tcl_Obj *newValue, Tcl_Encoding encoding);
+MODULE_SCOPE void	TclSignalExitThread(Tcl_ThreadId id, int result);
+MODULE_SCOPE void *	TclStackRealloc(Tcl_Interp *interp, void *ptr,
+			    int numBytes);
+MODULE_SCOPE int	TclStringMatch(const char *str, int strLen,
+			    const char *pattern, int ptnLen, int flags);
+MODULE_SCOPE int	TclStringMatchObj(Tcl_Obj *stringObj,
+			    Tcl_Obj *patternObj, int flags);
+MODULE_SCOPE Tcl_Obj *	TclStringObjReverse(Tcl_Obj *objPtr);
+MODULE_SCOPE int	TclSubstTokens(Tcl_Interp *interp, Tcl_Token *tokenPtr,
+			    int count, int *tokensLeftPtr, int line,
+			    int *clNextOuter, CONST char *outerScript);
+MODULE_SCOPE void	TclTransferResult(Tcl_Interp *sourceInterp, int result,
+			    Tcl_Interp *targetInterp);
+MODULE_SCOPE int	TclTrimLeft(const char *bytes, int numBytes,
+			    const char *trim, int numTrim);
+MODULE_SCOPE int	TclTrimRight(const char *bytes, int numBytes,
+			    const char *trim, int numTrim);
+MODULE_SCOPE Tcl_Obj *	TclpNativeToNormalized(ClientData clientData);
+MODULE_SCOPE Tcl_Obj *	TclpFilesystemPathType(Tcl_Obj *pathPtr);
+MODULE_SCOPE Tcl_PackageInitProc *TclpFindSymbol(Tcl_Interp *interp,
+			    Tcl_LoadHandle loadHandle, const char *symbol);
+MODULE_SCOPE int	TclpDlopen(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+			    Tcl_LoadHandle *loadHandle,
+			    Tcl_FSUnloadFileProc **unloadProcPtr);
+MODULE_SCOPE int	TclpUtime(Tcl_Obj *pathPtr, struct utimbuf *tval);
 #ifdef TCL_LOAD_FROM_MEMORY
-EXTERN void*	        TclpLoadMemoryGetBuffer _ANSI_ARGS_((
-			    Tcl_Interp *interp, int size));
-EXTERN int	        TclpLoadMemory _ANSI_ARGS_((Tcl_Interp *interp, 
-			    void *buffer, int size, int codeSize, 
-			    Tcl_LoadHandle *loadHandle, 
-			    Tcl_FSUnloadFileProc **unloadProcPtr));
+MODULE_SCOPE void *	TclpLoadMemoryGetBuffer(Tcl_Interp *interp, int size);
+MODULE_SCOPE int	TclpLoadMemory(Tcl_Interp *interp, void *buffer,
+			    int size, int codeSize, Tcl_LoadHandle *loadHandle,
+			    Tcl_FSUnloadFileProc **unloadProcPtr);
 #endif
+MODULE_SCOPE void	TclInitThreadStorage(void);
+MODULE_SCOPE void	TclpFinalizeThreadDataThread(void);
+MODULE_SCOPE void	TclFinalizeThreadStorage(void);
+#ifdef TCL_WIDE_CLICKS
+MODULE_SCOPE Tcl_WideInt TclpGetWideClicks(void);
+MODULE_SCOPE double	TclpWideClicksToNanoseconds(Tcl_WideInt clicks);
+#endif
+MODULE_SCOPE Tcl_Obj *	TclDisassembleByteCodeObj(Tcl_Obj *objPtr);
 
 /*
  *----------------------------------------------------------------
@@ -2137,160 +2769,266 @@ EXTERN int	        TclpLoadMemory _ANSI_ARGS_((Tcl_Interp *interp,
  *----------------------------------------------------------------
  */
 
-EXTERN int	Tcl_AfterObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_AppendObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ArrayObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_BinaryObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_BreakObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_CaseObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_CatchObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_CdObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ClockObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_CloseObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ConcatObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ContinueObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_EncodingObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_EofObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ErrorObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_EvalObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ExecObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ExitObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ExprObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FblockedObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FconfigureObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FcopyObjCmd _ANSI_ARGS_((ClientData dummy,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FileObjCmd _ANSI_ARGS_((ClientData dummy,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FileEventObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FlushObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ForObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ForeachObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_FormatObjCmd _ANSI_ARGS_((ClientData dummy,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_GetsObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_GlobalObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_GlobObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_IfObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_IncrObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_InfoObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_InterpObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int argc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_JoinObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LappendObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LindexObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LinsertObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LlengthObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ListObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LoadObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LrangeObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LreplaceObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LsearchObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LsetObjCmd _ANSI_ARGS_((ClientData clientData,
-                    Tcl_Interp* interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_LsortObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_NamespaceObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_OpenObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_PackageObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_PidObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_PutsObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_PwdObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ReadObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_RegexpObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_RegsubObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_RenameObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ReturnObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_ScanObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SeekObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SetObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SplitObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SocketObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SourceObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_StringObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SubstObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_SwitchObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_TellObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_TimeObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_TraceObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_UnsetObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_UpdateObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_UplevelObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_UpvarObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_VariableObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_VwaitObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	Tcl_WhileObjCmd _ANSI_ARGS_((ClientData clientData,
-		    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
+MODULE_SCOPE int	Tcl_AfterObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_AppendObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ApplyObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ArrayObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_BinaryObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_BreakObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_CaseObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_CatchObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_CdObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE Tcl_Command TclInitChanCmd(Tcl_Interp *interp);
+MODULE_SCOPE int	TclChanCreateObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclChanPostEventObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE void	TclClockInit(Tcl_Interp *interp);
+MODULE_SCOPE int	TclClockOldscanObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_CloseObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ConcatObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ContinueObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE Tcl_TimerToken TclCreateAbsoluteTimerHandler(
+			    Tcl_Time *timePtr, Tcl_TimerProc *proc,
+			    ClientData clientData);
+MODULE_SCOPE int	TclDefaultBgErrorHandlerObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE Tcl_Command TclInitDictCmd(Tcl_Interp *interp);
+MODULE_SCOPE int	Tcl_DisassembleObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_EncodingObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_EofObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ErrorObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_EvalObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ExecObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ExitObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ExprObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FblockedObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FconfigureObjCmd(
+			    ClientData clientData, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FcopyObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FileObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FileEventObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FlushObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ForObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ForeachObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_FormatObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_GetsObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_GlobalObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_GlobObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_IfObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_IncrObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE Tcl_Command TclInitInfoCmd(Tcl_Interp *interp);
+MODULE_SCOPE int	Tcl_InterpObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int argc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_JoinObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LappendObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LassignObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LindexObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LinsertObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LlengthObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ListObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LoadObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LrangeObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LrepeatObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LreplaceObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LreverseObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LsearchObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LsetObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_LsortObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_NamespaceObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_OpenObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_PackageObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_PidObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_PutsObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_PwdObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ReadObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_RegexpObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_RegsubObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_RenameObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ReturnObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_ScanObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_SeekObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_SetObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_SplitObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_SocketObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_SourceObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE Tcl_Command TclInitStringCmd(Tcl_Interp *interp);
+MODULE_SCOPE int	Tcl_SubstObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_SwitchObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_TellObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_TimeObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_TraceObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_UnloadObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_UnsetObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_UpdateObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_UplevelObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_UpvarObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_VariableObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_VwaitObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	Tcl_WhileObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
 
 /*
  *----------------------------------------------------------------
@@ -2298,88 +3036,327 @@ EXTERN int	Tcl_WhileObjCmd _ANSI_ARGS_((ClientData clientData,
  *----------------------------------------------------------------
  */
 
-EXTERN int	TclCompileAppendCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileBreakCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileCatchCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileContinueCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileExprCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileForCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileForeachCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileIfCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileIncrCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileLappendCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileLindexCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileListCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileLlengthCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileLsetCmd _ANSI_ARGS_((Tcl_Interp* interp,
-		    Tcl_Parse* parsePtr, struct CompileEnv* envPtr));
-EXTERN int	TclCompileRegexpCmd _ANSI_ARGS_((Tcl_Interp* interp,
-		    Tcl_Parse* parsePtr, struct CompileEnv* envPtr));
-EXTERN int	TclCompileReturnCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileSetCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileStringCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-EXTERN int	TclCompileWhileCmd _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
-
-/*
- * Functions defined in generic/tclVar.c and currenttly exported only 
- * for use by the bytecode compiler and engine. Some of these could later 
- * be placed in the public interface.
- */
-
-EXTERN Var *	TclLookupArrayElement _ANSI_ARGS_((Tcl_Interp *interp,
-		    CONST char *arrayName, CONST char *elName, CONST int flags,
-		    CONST char *msg, CONST int createPart1,
-		    CONST int createPart2, Var *arrayPtr));	
-EXTERN Var *    TclObjLookupVar _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Obj *part1Ptr, CONST char *part2, int flags,
-		    CONST char *msg, CONST int createPart1,
-		    CONST int createPart2, Var **arrayPtrPtr));
-EXTERN Tcl_Obj *TclPtrGetVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
-		    Var *arrayPtr, CONST char *part1, CONST char *part2,
-		    CONST int flags));
-EXTERN Tcl_Obj *TclPtrSetVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
-		    Var *arrayPtr, CONST char *part1, CONST char *part2,
-		    Tcl_Obj *newValuePtr, CONST int flags));
-EXTERN Tcl_Obj *TclPtrIncrVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
-		    Var *arrayPtr, CONST char *part1, CONST char *part2,
-		    CONST long i, CONST int flags));
+MODULE_SCOPE int	TclCompileAppendCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileBreakCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileCatchCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileContinueCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictAppendCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictForCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictGetCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictIncrCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictLappendCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictSetCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileDictUpdateCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileEnsemble(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileExprCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileForCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileForeachCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileGlobalCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileIfCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileInfoExistsCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileIncrCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileLappendCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileLassignCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileLindexCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileListCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileLlengthCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileLsetCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileNamespaceCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileNoOp(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileRegexpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileReturnCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileSetCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileStringCmpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileStringEqualCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileStringIndexCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileStringLenCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileStringMatchCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileSwitchCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileUpvarCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileVariableCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclCompileWhileCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+
+MODULE_SCOPE int	TclInvertOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileInvertOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclNotOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileNotOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclAddOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileAddOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclMulOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileMulOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclAndOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileAndOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclOrOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileOrOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclXorOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileXorOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclPowOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompilePowOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclLshiftOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileLshiftOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclRshiftOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileRshiftOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclModOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileModOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclNeqOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileNeqOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclStrneqOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileStrneqOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclInOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileInOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclNiOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileNiOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclMinusOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileMinusOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclDivOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileDivOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclLessOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileLessOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclLeqOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileLeqOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclGreaterOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileGreaterOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclGeqOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileGeqOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclEqOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileEqOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+MODULE_SCOPE int	TclStreqOpCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+MODULE_SCOPE int	TclCompileStreqOpCmd(Tcl_Interp *interp,
+			    Tcl_Parse *parsePtr, Command *cmdPtr,
+			    struct CompileEnv *envPtr);
+
+/*
+ * Functions defined in generic/tclVar.c and currenttly exported only for use
+ * by the bytecode compiler and engine. Some of these could later be placed in
+ * the public interface.
+ */
+
+MODULE_SCOPE Var *	TclObjLookupVarEx(Tcl_Interp * interp,
+			    Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags,
+			    const char *msg, const int createPart1,
+			    const int createPart2, Var **arrayPtrPtr);
+MODULE_SCOPE Var *	TclLookupArrayElement(Tcl_Interp *interp,
+			    Tcl_Obj *arrayNamePtr, Tcl_Obj *elNamePtr,
+			    const int flags, const char *msg,
+			    const int createPart1, const int createPart2,
+			    Var *arrayPtr, int index);
+MODULE_SCOPE Tcl_Obj *	TclPtrGetVar(Tcl_Interp *interp,
+			    Var *varPtr, Var *arrayPtr, Tcl_Obj *part1Ptr,
+			    Tcl_Obj *part2Ptr, const int flags, int index);
+MODULE_SCOPE Tcl_Obj *	TclPtrSetVar(Tcl_Interp *interp,
+			    Var *varPtr, Var *arrayPtr, Tcl_Obj *part1Ptr,
+			    Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr,
+			    const int flags, int index);
+MODULE_SCOPE Tcl_Obj *	TclPtrIncrObjVar(Tcl_Interp *interp,
+			    Var *varPtr, Var *arrayPtr, Tcl_Obj *part1Ptr,
+			    Tcl_Obj *part2Ptr, Tcl_Obj *incrPtr,
+			    const int flags, int index);
+MODULE_SCOPE int	TclPtrObjMakeUpvar(Tcl_Interp *interp, Var *otherPtr,
+			    Tcl_Obj *myNamePtr, int myFlags, int index);
+MODULE_SCOPE void	TclInvalidateNsPath(Namespace *nsPtr);
+
+/*
+ * The new extended interface to the variable traces.
+ */
+
+MODULE_SCOPE int	TclObjCallVarTraces(Interp *iPtr, Var *arrayPtr,
+			    Var *varPtr, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr,
+			    int flags, int leaveErrMsg, int index);
+
+/*
+ * So tclObj.c and tclDictObj.c can share these implementations.
+ */
+
+MODULE_SCOPE int	TclCompareObjKeys(void *keyPtr, Tcl_HashEntry *hPtr);
+MODULE_SCOPE void	TclFreeObjEntry(Tcl_HashEntry *hPtr);
+MODULE_SCOPE unsigned	TclHashObjKey(Tcl_HashTable *tablePtr, void *keyPtr);
 
 /*
  *----------------------------------------------------------------
  * Macros used by the Tcl core to create and release Tcl objects.
  * TclNewObj(objPtr) creates a new object denoting an empty string.
- * TclDecrRefCount(objPtr) decrements the object's reference count,
- * and frees the object if its reference count is zero.
- * These macros are inline versions of Tcl_NewObj() and
- * Tcl_DecrRefCount(). Notice that the names differ in not having
- * a "_" after the "Tcl". Notice also that these macros reference
- * their argument more than once, so you should avoid calling them
- * with an expression that is expensive to compute or has
- * side effects. The ANSI C "prototypes" for these macros are:
+ * TclDecrRefCount(objPtr) decrements the object's reference count, and frees
+ * the object if its reference count is zero. These macros are inline versions
+ * of Tcl_NewObj() and Tcl_DecrRefCount(). Notice that the names differ in not
+ * having a "_" after the "Tcl". Notice also that these macros reference their
+ * argument more than once, so you should avoid calling them with an
+ * expression that is expensive to compute or has side effects. The ANSI C
+ * "prototypes" for these macros are:
  *
- * EXTERN void	TclNewObj _ANSI_ARGS_((Tcl_Obj *objPtr));
- * EXTERN void	TclDecrRefCount _ANSI_ARGS_((Tcl_Obj *objPtr));
+ * MODULE_SCOPE void	TclNewObj(Tcl_Obj *objPtr);
+ * MODULE_SCOPE void	TclDecrRefCount(Tcl_Obj *objPtr);
  *
- * These macros are defined in terms of two macros that depend on 
- * memory allocator in use: TclAllocObjStorage, TclFreeObjStorage.
- * They are defined below.
+ * These macros are defined in terms of two macros that depend on memory
+ * allocator in use: TclAllocObjStorage, TclFreeObjStorage. They are defined
+ * below.
  *----------------------------------------------------------------
  */
 
@@ -2406,94 +3383,78 @@ EXTERN Tcl_Obj *TclPtrIncrVar _ANSI_ARGS_((Tcl_Interp *interp, Var *varPtr,
 #  define TclIncrObjsFreed()
 #endif /* TCL_COMPILE_STATS */
 
-#define TclNewObj(objPtr) \
-    TclAllocObjStorage(objPtr); \
+#ifndef TCL_MEM_DEBUG
+# define TclNewObj(objPtr) \
     TclIncrObjsAllocated(); \
+    TclAllocObjStorage(objPtr); \
     (objPtr)->refCount = 0; \
     (objPtr)->bytes    = tclEmptyStringRep; \
     (objPtr)->length   = 0; \
     (objPtr)->typePtr  = NULL; \
     TCL_DTRACE_OBJ_CREATE(objPtr)
 
-
-#ifdef TCL_MEM_DEBUG
-#   define TclDecrRefCount(objPtr) \
-	Tcl_DbDecrRefCount(objPtr, __FILE__, __LINE__)
-#else
-#   define TclDecrRefCount(objPtr) \
-    if (--(objPtr)->refCount <= 0) { \
-	TCL_DTRACE_OBJ_FREE(objPtr); \
-	if (((objPtr)->typePtr != NULL) \
-		&& ((objPtr)->typePtr->freeIntRepProc != NULL)) { \
-	    (objPtr)->typePtr->freeIntRepProc(objPtr); \
-	} \
-	if (((objPtr)->bytes != NULL) \
-		&& ((objPtr)->bytes != tclEmptyStringRep)) { \
-	    ckfree((char *) (objPtr)->bytes); \
+/*
+ * Invalidate the string rep first so we can use the bytes value for our
+ * pointer chain, and signal an obj deletion (as opposed to shimmering) with
+ * 'length == -1'.
+ * Use empty 'if ; else' to handle use in unbraced outer if/else conditions.
+ */
+
+# define TclDecrRefCount(objPtr) \
+    if (--(objPtr)->refCount > 0) ; else { \
+	if (!(objPtr)->typePtr || !(objPtr)->typePtr->freeIntRepProc) { \
+	    TCL_DTRACE_OBJ_FREE(objPtr); \
+	    if ((objPtr)->bytes \
+		    && ((objPtr)->bytes != tclEmptyStringRep)) { \
+		ckfree((char *) (objPtr)->bytes); \
+	    } \
+	    (objPtr)->length = -1; \
+	    TclFreeObjStorage(objPtr); \
+	    TclIncrObjsFreed(); \
+	} else { \
+	    TclFreeObj(objPtr); \
 	} \
-        TclFreeObjStorage(objPtr); \
-	TclIncrObjsFreed(); \
     }
-#endif
-
-#ifdef TCL_MEM_DEBUG
-#  define TclAllocObjStorage(objPtr) \
-       (objPtr) = (Tcl_Obj *) \
-           Tcl_DbCkalloc(sizeof(Tcl_Obj), __FILE__, __LINE__)
 
-#  define TclFreeObjStorage(objPtr) \
-       if ((objPtr)->refCount < -1) { \
-           panic("Reference count for %lx was negative: %s line %d", \
-	           (objPtr), __FILE__, __LINE__); \
-       } \
-       ckfree((char *) (objPtr))
-     
-#  define TclDbNewObj(objPtr, file, line) \
-       (objPtr) = (Tcl_Obj *) Tcl_DbCkalloc(sizeof(Tcl_Obj), (file), (line)); \
-       (objPtr)->refCount = 0; \
-       (objPtr)->bytes    = tclEmptyStringRep; \
-       (objPtr)->length   = 0; \
-       (objPtr)->typePtr  = NULL; \
-       TclIncrObjsAllocated(); \
-       TCL_DTRACE_OBJ_CREATE(objPtr)
-
-     
-#elif defined(PURIFY)
+#if defined(PURIFY)
 
 /*
  * The PURIFY mode is like the regular mode, but instead of doing block
  * Tcl_Obj allocation and keeping a freed list for efficiency, it always
- * allocates and frees a single Tcl_Obj so that tools like Purify can
- * better track memory leaks
+ * allocates and frees a single Tcl_Obj so that tools like Purify can better
+ * track memory leaks.
  */
 
 #  define TclAllocObjStorage(objPtr) \
-       (objPtr) = (Tcl_Obj *) Tcl_Ckalloc(sizeof(Tcl_Obj))
+	(objPtr) = (Tcl_Obj *) Tcl_Alloc(sizeof(Tcl_Obj))
 
 #  define TclFreeObjStorage(objPtr) \
-       ckfree((char *) (objPtr))
+	ckfree((char *) (objPtr))
 
+#undef USE_THREAD_ALLOC
 #elif defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
 
 /*
- * The TCL_THREADS mode is like the regular mode but allocates Tcl_Obj's
- * from per-thread caches.
+ * The TCL_THREADS mode is like the regular mode but allocates Tcl_Obj's from
+ * per-thread caches.
  */
 
-EXTERN Tcl_Obj *TclThreadAllocObj _ANSI_ARGS_((void));
-EXTERN void TclThreadFreeObj _ANSI_ARGS_((Tcl_Obj *));
-EXTERN void TclFreeAllocCache _ANSI_ARGS_((void *));
-EXTERN void TclpFreeAllocMutex _ANSI_ARGS_((Tcl_Mutex* mutex));
-EXTERN void TclpFreeAllocCache _ANSI_ARGS_((void *));
-
+MODULE_SCOPE Tcl_Obj *	TclThreadAllocObj(void);
+MODULE_SCOPE void	TclThreadFreeObj(Tcl_Obj *);
+MODULE_SCOPE Tcl_Mutex *TclpNewAllocMutex(void);
+MODULE_SCOPE void	TclFreeAllocCache(void *);
+MODULE_SCOPE void *	TclpGetAllocCache(void);
+MODULE_SCOPE void	TclpSetAllocCache(void *);
+MODULE_SCOPE void	TclpFreeAllocMutex(Tcl_Mutex *mutex);
+MODULE_SCOPE void	TclpFreeAllocCache(void *);
 
 #  define TclAllocObjStorage(objPtr) \
-       (objPtr) = TclThreadAllocObj()
+	(objPtr) = TclThreadAllocObj()
 
 #  define TclFreeObjStorage(objPtr) \
-       TclThreadFreeObj((objPtr))
+	TclThreadFreeObj((objPtr))
 
-#else /* not TCL_MEM_DEBUG */
+#else /* not PURIFY or USE_THREAD_ALLOC */
 
 #if defined(USE_TCLALLOC) && USE_TCLALLOC
     MODULE_SCOPE void TclFinalizeAllocSubsystem();
@@ -2504,38 +3465,60 @@ EXTERN void TclpFreeAllocCache _ANSI_ARGS_((void *));
 
 #ifdef TCL_THREADS
 /* declared in tclObj.c */
-extern Tcl_Mutex tclObjMutex;
+MODULE_SCOPE Tcl_Mutex	tclObjMutex;
 #endif
 
 #  define TclAllocObjStorage(objPtr) \
-       Tcl_MutexLock(&tclObjMutex); \
-       if (tclFreeObjList == NULL) { \
-	   TclAllocateFreeObjects(); \
-       } \
-       (objPtr) = tclFreeObjList; \
-       tclFreeObjList = (Tcl_Obj *) \
-	   tclFreeObjList->internalRep.otherValuePtr; \
-       Tcl_MutexUnlock(&tclObjMutex)
+	Tcl_MutexLock(&tclObjMutex); \
+	if (tclFreeObjList == NULL) { \
+	    TclAllocateFreeObjects(); \
+	} \
+	(objPtr) = tclFreeObjList; \
+	tclFreeObjList = (Tcl_Obj *) \
+		tclFreeObjList->internalRep.twoPtrValue.ptr1; \
+	Tcl_MutexUnlock(&tclObjMutex)
 
 #  define TclFreeObjStorage(objPtr) \
-       Tcl_MutexLock(&tclObjMutex); \
-       (objPtr)->internalRep.otherValuePtr = (VOID *) tclFreeObjList; \
-       tclFreeObjList = (objPtr); \
-       Tcl_MutexUnlock(&tclObjMutex)
+	Tcl_MutexLock(&tclObjMutex); \
+	(objPtr)->internalRep.twoPtrValue.ptr1 = (void *) tclFreeObjList; \
+	tclFreeObjList = (objPtr); \
+	Tcl_MutexUnlock(&tclObjMutex)
+#endif
+
+#else /* TCL_MEM_DEBUG */
+MODULE_SCOPE void	TclDbInitNewObj(Tcl_Obj *objPtr, CONST char *file,
+			    int line);
+
+# define TclDbNewObj(objPtr, file, line) \
+    TclIncrObjsAllocated(); \
+    (objPtr) = (Tcl_Obj *) Tcl_DbCkalloc(sizeof(Tcl_Obj), (file), (line)); \
+    TclDbInitNewObj((objPtr), (file), (line)); \
+    TCL_DTRACE_OBJ_CREATE(objPtr)
 
+# define TclNewObj(objPtr) \
+    TclDbNewObj(objPtr, __FILE__, __LINE__);
+
+# define TclDecrRefCount(objPtr) \
+    Tcl_DbDecrRefCount(objPtr, __FILE__, __LINE__)
+
+# define TclNewListObjDirect(objc, objv) \
+    TclDbNewListObjDirect(objc, objv, __FILE__, __LINE__)
+
+#undef USE_THREAD_ALLOC
 #endif /* TCL_MEM_DEBUG */
 
 /*
  *----------------------------------------------------------------
- * Macro used by the Tcl core to set a Tcl_Obj's string representation
- * to a copy of the "len" bytes starting at "bytePtr". This code
- * works even if the byte array contains NULLs as long as the length
- * is correct. Because "len" is referenced multiple times, it should
- * be as simple an expression as possible. The ANSI C "prototype" for
- * this macro is:
+ * Macro used by the Tcl core to set a Tcl_Obj's string representation to a
+ * copy of the "len" bytes starting at "bytePtr". This code works even if the
+ * byte array contains NULLs as long as the length is correct. Because "len"
+ * is referenced multiple times, it should be as simple an expression as
+ * possible. The ANSI C "prototype" for this macro is:
  *
- * EXTERN void	TclInitStringRep _ANSI_ARGS_((Tcl_Obj *objPtr,
- *		    char *bytePtr, int len));
+ * MODULE_SCOPE void TclInitStringRep(Tcl_Obj *objPtr, char *bytePtr, int len);
+ *
+ * This macro should only be called on an unshared objPtr where
+ *  objPtr->typePtr->freeIntRepProc == NULL
  *----------------------------------------------------------------
  */
 
@@ -2545,7 +3528,7 @@ extern Tcl_Mutex tclObjMutex;
 	(objPtr)->length = 0; \
     } else { \
 	(objPtr)->bytes = (char *) ckalloc((unsigned) ((len) + 1)); \
-	memcpy((VOID *) (objPtr)->bytes, (VOID *) (bytePtr), \
+	memcpy((void *) (objPtr)->bytes, (void *) (bytePtr), \
 		(unsigned) (len)); \
 	(objPtr)->bytes[len] = '\0'; \
 	(objPtr)->length = (len); \
@@ -2553,80 +3536,400 @@ extern Tcl_Mutex tclObjMutex;
 
 /*
  *----------------------------------------------------------------
- * Macro used by the Tcl core to get the string representation's
- * byte array pointer from a Tcl_Obj. This is an inline version
- * of Tcl_GetString(). The macro's expression result is the string
- * rep's byte pointer which might be NULL. The bytes referenced by 
- * this pointer must not be modified by the caller.
- * The ANSI C "prototype" for this macro is:
+ * Macro used by the Tcl core to get the string representation's byte array
+ * pointer from a Tcl_Obj. This is an inline version of Tcl_GetString(). The
+ * macro's expression result is the string rep's byte pointer which might be
+ * NULL. The bytes referenced by this pointer must not be modified by the
+ * caller. The ANSI C "prototype" for this macro is:
  *
- * EXTERN char *  TclGetString _ANSI_ARGS_((Tcl_Obj *objPtr));
+ * MODULE_SCOPE char *	TclGetString(Tcl_Obj *objPtr);
  *----------------------------------------------------------------
  */
 
 #define TclGetString(objPtr) \
     ((objPtr)->bytes? (objPtr)->bytes : Tcl_GetString((objPtr)))
 
+#define TclGetStringFromObj(objPtr, lenPtr) \
+    ((objPtr)->bytes \
+	    ? (*(lenPtr) = (objPtr)->length, (objPtr)->bytes)	\
+	    : Tcl_GetStringFromObj((objPtr), (lenPtr)))
+
 /*
  *----------------------------------------------------------------
- * Macro used by the Tcl core to get a Tcl_WideInt value out of
- * a Tcl_Obj of the "wideInt" type.  Different implementation on
- * different platforms depending whether TCL_WIDE_INT_IS_LONG.
+ * Macro used by the Tcl core to clean out an object's internal
+ * representation. Does not actually reset the rep's bytes. The ANSI C
+ * "prototype" for this macro is:
+ *
+ * MODULE_SCOPE void	TclFreeIntRep(Tcl_Obj *objPtr);
  *----------------------------------------------------------------
  */
 
-#ifdef TCL_WIDE_INT_IS_LONG
-#    define TclGetWide(resultVar, objPtr) \
-	(resultVar) = (objPtr)->internalRep.longValue
-#    define TclGetLongFromWide(resultVar, objPtr) \
-	(resultVar) = (objPtr)->internalRep.longValue
-#else
-#    define TclGetWide(resultVar, objPtr) \
-	(resultVar) = (objPtr)->internalRep.wideValue
-#    define TclGetLongFromWide(resultVar, objPtr) \
-	(resultVar) = Tcl_WideAsLong((objPtr)->internalRep.wideValue)
-#endif
+#define TclFreeIntRep(objPtr) \
+    if ((objPtr)->typePtr != NULL && \
+	    (objPtr)->typePtr->freeIntRepProc != NULL) { \
+	(objPtr)->typePtr->freeIntRepProc(objPtr); \
+    }
 
 /*
  *----------------------------------------------------------------
- * Macro used by the Tcl core get a unicode char from a utf string.
- * It checks to see if we have a one-byte utf char before calling
- * the real Tcl_UtfToUniChar, as this will save a lot of time for
- * primarily ascii string handling. The macro's expression result
- * is 1 for the 1-byte case or the result of Tcl_UtfToUniChar.
+ * Macro used by the Tcl core to clean out an object's string representation.
  * The ANSI C "prototype" for this macro is:
  *
- * EXTERN int TclUtfToUniChar _ANSI_ARGS_((CONST char *string,
- *					   Tcl_UniChar *ch));
+ * MODULE_SCOPE void	TclInvalidateStringRep(Tcl_Obj *objPtr);
+ *----------------------------------------------------------------
+ */
+
+#define TclInvalidateStringRep(objPtr) \
+    if (objPtr->bytes != NULL) { \
+	if (objPtr->bytes != tclEmptyStringRep) { \
+	    ckfree((char *) objPtr->bytes); \
+	} \
+	objPtr->bytes = NULL; \
+    }
+
+/*
+ *----------------------------------------------------------------
+ * Macros used by the Tcl core to grow Tcl_Token arrays. They use the same
+ * growth algorithm as used in tclStringObj.c for growing strings. The ANSI C
+ * "prototype" for this macro is:
+ *
+ * MODULE_SCOPE void	TclGrowTokenArray(Tcl_Token *tokenPtr, int used,
+ *				int available, int append,
+ *				Tcl_Token *staticPtr);
+ * MODULE_SCOPE void	TclGrowParseTokenArray(Tcl_Parse *parsePtr,
+ *				int append);
+ *----------------------------------------------------------------
+ */
+
+#define TCL_MAX_TOKENS (int)(UINT_MAX / sizeof(Tcl_Token))
+#define TCL_MIN_TOKEN_GROWTH 50
+#define TclGrowTokenArray(tokenPtr, used, available, append, staticPtr)	\
+{									\
+    int needed = (used) + (append);					\
+    if (needed > TCL_MAX_TOKENS) {					\
+	Tcl_Panic("max # of tokens for a Tcl parse (%d) exceeded",	\
+		TCL_MAX_TOKENS);					\
+    }									\
+    if (needed > (available)) {						\
+	int allocated = 2 * needed;					\
+	Tcl_Token *oldPtr = (tokenPtr);					\
+	Tcl_Token *newPtr;						\
+	if (oldPtr == (staticPtr)) {					\
+	    oldPtr = NULL;						\
+	}								\
+	if (allocated > TCL_MAX_TOKENS) {				\
+	    allocated = TCL_MAX_TOKENS;					\
+	}								\
+	newPtr = (Tcl_Token *) attemptckrealloc((char *) oldPtr,	\
+		(unsigned int) (allocated * sizeof(Tcl_Token)));	\
+	if (newPtr == NULL) {						\
+	    allocated = needed + (append) + TCL_MIN_TOKEN_GROWTH;	\
+	    if (allocated > TCL_MAX_TOKENS) {				\
+		allocated = TCL_MAX_TOKENS;				\
+	    }								\
+	    newPtr = (Tcl_Token *) ckrealloc((char *) oldPtr,		\
+		    (unsigned int) (allocated * sizeof(Tcl_Token)));	\
+	}								\
+	(available) = allocated;					\
+	if (oldPtr == NULL) {						\
+	    memcpy((VOID *) newPtr, (VOID *) staticPtr,			\
+		    (size_t) ((used) * sizeof(Tcl_Token)));		\
+	}								\
+	(tokenPtr) = newPtr;						\
+    }									\
+}
+
+#define TclGrowParseTokenArray(parsePtr, append)			\
+    TclGrowTokenArray((parsePtr)->tokenPtr, (parsePtr)->numTokens,	\
+	    (parsePtr)->tokensAvailable, (append),			\
+	    (parsePtr)->staticTokens)
+
+/*
+ *----------------------------------------------------------------
+ * Macro used by the Tcl core get a unicode char from a utf string. It checks
+ * to see if we have a one-byte utf char before calling the real
+ * Tcl_UtfToUniChar, as this will save a lot of time for primarily ASCII
+ * string handling. The macro's expression result is 1 for the 1-byte case or
+ * the result of Tcl_UtfToUniChar. The ANSI C "prototype" for this macro is:
+ *
+ * MODULE_SCOPE int	TclUtfToUniChar(const char *string, Tcl_UniChar *ch);
  *----------------------------------------------------------------
  */
 
 #define TclUtfToUniChar(str, chPtr) \
-	((((unsigned char) *(str)) < 0xC0) ? \
-	    ((*(chPtr) = (Tcl_UniChar) *(str)), 1) \
+	((((unsigned char) *(str)) < 0xC0) ?		\
+	    ((*(chPtr) = (Tcl_UniChar) *(str)), 1)	\
 	    : Tcl_UtfToUniChar(str, chPtr))
 
 /*
  *----------------------------------------------------------------
- * Macro used by the Tcl core to compare Unicode strings.  On
- * big-endian systems we can use the more efficient memcmp, but
- * this would not be lexically correct on little-endian systems.
- * The ANSI C "prototype" for this macro is:
+ * Macro used by the Tcl core to compare Unicode strings. On big-endian
+ * systems we can use the more efficient memcmp, but this would not be
+ * lexically correct on little-endian systems. The ANSI C "prototype" for
+ * this macro is:
  *
- * EXTERN int TclUniCharNcmp _ANSI_ARGS_((CONST Tcl_UniChar *cs,
- *         CONST Tcl_UniChar *ct, unsigned long n));
+ * MODULE_SCOPE int	TclUniCharNcmp(const Tcl_UniChar *cs,
+ *			    const Tcl_UniChar *ct, unsigned long n);
  *----------------------------------------------------------------
  */
+
 #ifdef WORDS_BIGENDIAN
 #   define TclUniCharNcmp(cs,ct,n) memcmp((cs),(ct),(n)*sizeof(Tcl_UniChar))
 #else /* !WORDS_BIGENDIAN */
 #   define TclUniCharNcmp Tcl_UniCharNcmp
 #endif /* WORDS_BIGENDIAN */
 
-#include "tclIntDecls.h"
+/*
+ *----------------------------------------------------------------
+ * Macro used by the Tcl core to increment a namespace's export export epoch
+ * counter. The ANSI C "prototype" for this macro is:
+ *
+ * MODULE_SCOPE void	TclInvalidateNsCmdLookup(Namespace *nsPtr);
+ *----------------------------------------------------------------
+ */
+
+#define TclInvalidateNsCmdLookup(nsPtr) \
+    if ((nsPtr)->numExportPatterns) {		\
+	(nsPtr)->exportLookupEpoch++;		\
+    }						\
+    if ((nsPtr)->commandPathLength) {		\
+	(nsPtr)->cmdRefEpoch++;			\
+    }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Core procedures added to libtommath for bignum manipulation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+MODULE_SCOPE int	TclTommath_Init(Tcl_Interp *interp);
+MODULE_SCOPE void	TclBNInitBignumFromLong(mp_int *bignum, long initVal);
+MODULE_SCOPE void	TclBNInitBignumFromWideInt(mp_int *bignum,
+			    Tcl_WideInt initVal);
+MODULE_SCOPE void	TclBNInitBignumFromWideUInt(mp_int *bignum,
+			    Tcl_WideUInt initVal);
+
+/*
+ *----------------------------------------------------------------
+ * Macro used by the Tcl core to check whether a pattern has any characters
+ * special to [string match]. The ANSI C "prototype" for this macro is:
+ *
+ * MODULE_SCOPE int	TclMatchIsTrivial(const char *pattern);
+ *----------------------------------------------------------------
+ */
+
+#define TclMatchIsTrivial(pattern)	strpbrk((pattern), "*[?\\") == NULL
+
+/*
+ *----------------------------------------------------------------
+ * Macros used by the Tcl core to set a Tcl_Obj's numeric representation
+ * avoiding the corresponding function calls in time critical parts of the
+ * core. They should only be called on unshared objects. The ANSI C
+ * "prototypes" for these macros are:
+ *
+ * MODULE_SCOPE void	TclSetIntObj(Tcl_Obj *objPtr, int intValue);
+ * MODULE_SCOPE void	TclSetLongObj(Tcl_Obj *objPtr, long longValue);
+ * MODULE_SCOPE void	TclSetBooleanObj(Tcl_Obj *objPtr, long boolValue);
+ * MODULE_SCOPE void	TclSetWideIntObj(Tcl_Obj *objPtr, Tcl_WideInt w);
+ * MODULE_SCOPE void	TclSetDoubleObj(Tcl_Obj *objPtr, double d);
+ *----------------------------------------------------------------
+ */
+
+#define TclSetIntObj(objPtr, i) \
+    TclInvalidateStringRep(objPtr);\
+    TclFreeIntRep(objPtr); \
+    (objPtr)->internalRep.longValue = (long)(i); \
+    (objPtr)->typePtr = &tclIntType
+
+#define TclSetLongObj(objPtr, l) \
+    TclSetIntObj((objPtr), (l))
+
+/*
+ * NOTE: There is to be no such thing as a "pure" boolean. Boolean values set
+ * programmatically go straight to being "int" Tcl_Obj's, with value 0 or 1.
+ * The only "boolean" Tcl_Obj's shall be those holding the cached boolean
+ * value of strings like: "yes", "no", "true", "false", "on", "off".
+ */
+
+#define TclSetBooleanObj(objPtr, b) \
+    TclSetIntObj((objPtr), ((b)? 1 : 0));
+
+#ifndef NO_WIDE_TYPE
+#define TclSetWideIntObj(objPtr, w) \
+    TclInvalidateStringRep(objPtr);\
+    TclFreeIntRep(objPtr); \
+    (objPtr)->internalRep.wideValue = (Tcl_WideInt)(w); \
+    (objPtr)->typePtr = &tclWideIntType
+#endif
+
+#define TclSetDoubleObj(objPtr, d) \
+    TclInvalidateStringRep(objPtr);\
+    TclFreeIntRep(objPtr); \
+    (objPtr)->internalRep.doubleValue = (double)(d); \
+    (objPtr)->typePtr = &tclDoubleType
+
+/*
+ *----------------------------------------------------------------
+ * Macros used by the Tcl core to create and initialise objects of standard
+ * types, avoiding the corresponding function calls in time critical parts of
+ * the core. The ANSI C "prototypes" for these macros are:
+ *
+ * MODULE_SCOPE void	TclNewIntObj(Tcl_Obj *objPtr, int i);
+ * MODULE_SCOPE void	TclNewLongObj(Tcl_Obj *objPtr, long l);
+ * MODULE_SCOPE void	TclNewBooleanObj(Tcl_Obj *objPtr, int b);
+ * MODULE_SCOPE void	TclNewWideObj(Tcl_Obj *objPtr, Tcl_WideInt w);
+ * MODULE_SCOPE void	TclNewDoubleObj(Tcl_Obj *objPtr, double d);
+ * MODULE_SCOPE void	TclNewStringObj(Tcl_Obj *objPtr, char *s, int len);
+ * MODULE_SCOPE void	TclNewLiteralStringObj(Tcl_Obj*objPtr, char*sLiteral);
+ *
+ *----------------------------------------------------------------
+ */
+
+#ifndef TCL_MEM_DEBUG
+#define TclNewIntObj(objPtr, i) \
+    TclIncrObjsAllocated(); \
+    TclAllocObjStorage(objPtr); \
+    (objPtr)->refCount = 0; \
+    (objPtr)->bytes = NULL; \
+    (objPtr)->internalRep.longValue = (long)(i); \
+    (objPtr)->typePtr = &tclIntType; \
+    TCL_DTRACE_OBJ_CREATE(objPtr)
+
+#define TclNewLongObj(objPtr, l) \
+    TclNewIntObj((objPtr), (l))
 
-# undef TCL_STORAGE_CLASS
-# define TCL_STORAGE_CLASS DLLIMPORT
+/*
+ * NOTE: There is to be no such thing as a "pure" boolean.
+ * See comment above TclSetBooleanObj macro above.
+ */
+#define TclNewBooleanObj(objPtr, b) \
+    TclNewIntObj((objPtr), ((b)? 1 : 0))
+
+#define TclNewDoubleObj(objPtr, d) \
+    TclIncrObjsAllocated(); \
+    TclAllocObjStorage(objPtr); \
+    (objPtr)->refCount = 0; \
+    (objPtr)->bytes = NULL; \
+    (objPtr)->internalRep.doubleValue = (double)(d); \
+    (objPtr)->typePtr = &tclDoubleType; \
+    TCL_DTRACE_OBJ_CREATE(objPtr)
+
+#define TclNewStringObj(objPtr, s, len) \
+    TclIncrObjsAllocated(); \
+    TclAllocObjStorage(objPtr); \
+    (objPtr)->refCount = 0; \
+    TclInitStringRep((objPtr), (s), (len));\
+    (objPtr)->typePtr = NULL; \
+    TCL_DTRACE_OBJ_CREATE(objPtr)
+
+#else /* TCL_MEM_DEBUG */
+#define TclNewIntObj(objPtr, i) \
+    (objPtr) = Tcl_NewIntObj(i)
+
+#define TclNewLongObj(objPtr, l) \
+    (objPtr) = Tcl_NewLongObj(l)
+
+#define TclNewBooleanObj(objPtr, b) \
+    (objPtr) = Tcl_NewBooleanObj(b)
+
+#define TclNewDoubleObj(objPtr, d) \
+    (objPtr) = Tcl_NewDoubleObj(d)
+
+#define TclNewStringObj(objPtr, s, len) \
+    (objPtr) = Tcl_NewStringObj((s), (len))
+#endif /* TCL_MEM_DEBUG */
+
+/*
+ * The sLiteral argument *must* be a string literal; the incantation with
+ * sizeof(sLiteral "") will fail to compile otherwise.
+ */
+#define TclNewLiteralStringObj(objPtr, sLiteral) \
+    TclNewStringObj((objPtr), (sLiteral), (int) (sizeof(sLiteral "") - 1))
+
+/*
+ *----------------------------------------------------------------
+ * Macros used by the Tcl core to test for some special double values.
+ * The ANSI C "prototypes" for these macros are:
+ *
+ * MODULE_SCOPE int	TclIsInfinite(double d);
+ * MODULE_SCOPE int	TclIsNaN(double d);
+ */
+
+#ifdef _MSC_VER
+#    define TclIsInfinite(d)	(!(_finite((d))))
+#    define TclIsNaN(d)		(_isnan((d)))
+#else
+#    define TclIsInfinite(d)	((d) > DBL_MAX || (d) < -DBL_MAX)
+#    ifdef NO_ISNAN
+#	 define TclIsNaN(d)	((d) != (d))
+#    else
+#	 define TclIsNaN(d)	(isnan(d))
+#    endif
+#endif
+
+/*
+ * ----------------------------------------------------------------------
+ * Macro to use to find the offset of a field in a structure. Computes number
+ * of bytes from beginning of structure to a given field.
+ */
+
+#ifdef offsetof
+#define TclOffset(type, field) ((int) offsetof(type, field))
+#else
+#define TclOffset(type, field) ((int) ((char *) &((type *) 0)->field))
+#endif
+
+/*
+ *----------------------------------------------------------------
+ * Inline version of Tcl_GetCurrentNamespace and Tcl_GetGlobalNamespace.
+ */
+
+#define TclGetCurrentNamespace(interp) \
+    (Tcl_Namespace *) ((Interp *)(interp))->varFramePtr->nsPtr
+
+#define TclGetGlobalNamespace(interp) \
+    (Tcl_Namespace *) ((Interp *)(interp))->globalNsPtr
+
+/*
+ *----------------------------------------------------------------
+ * Inline version of TclCleanupCommand; still need the function as it is in
+ * the internal stubs, but the core can use the macro instead.
+ */
+
+#define TclCleanupCommandMacro(cmdPtr) \
+    if (--(cmdPtr)->refCount <= 0) { \
+	ckfree((char *) (cmdPtr));\
+    }
+
+/*
+ *----------------------------------------------------------------
+ * Inline versions of Tcl_LimitReady() and Tcl_LimitExceeded to limit number
+ * of calls out of the critical path. Note that this code isn't particularly
+ * readable; the non-inline version (in tclInterp.c) is much easier to
+ * understand. Note also that these macros takes different args (iPtr->limit)
+ * to the non-inline version.
+ */
+
+#define TclLimitExceeded(limit) ((limit).exceeded != 0)
+
+#define TclLimitReady(limit)						\
+    (((limit).active == 0) ? 0 :					\
+    (++(limit).granularityTicker,					\
+    ((((limit).active & TCL_LIMIT_COMMANDS) &&				\
+	    (((limit).cmdGranularity == 1) ||				\
+	    ((limit).granularityTicker % (limit).cmdGranularity == 0)))	\
+	    ? 1 :							\
+    (((limit).active & TCL_LIMIT_TIME) &&				\
+	    (((limit).timeGranularity == 1) ||				\
+	    ((limit).granularityTicker % (limit).timeGranularity == 0)))\
+	    ? 1 : 0)))
+
+
+#include "tclIntDecls.h"
+#include "tclIntPlatDecls.h"
+#include "tclTomMathDecls.h"
 
 #endif /* _TCLINT */
 
diff --git a/generic/tclIntDecls.h b/generic/tclIntDecls.h
index 3bb9795..1dc797a 100644
--- a/generic/tclIntDecls.h
+++ b/generic/tclIntDecls.h
@@ -15,6 +15,33 @@
 #ifndef _TCLINTDECLS
 #define _TCLINTDECLS
 
+#include "tclPort.h"
+
+#undef TCL_STORAGE_CLASS
+#ifdef BUILD_tcl
+#   define TCL_STORAGE_CLASS DLLEXPORT
+#else
+#   ifdef USE_TCL_STUBS
+#      define TCL_STORAGE_CLASS
+#   else
+#      define TCL_STORAGE_CLASS DLLIMPORT
+#   endif
+#endif
+
+/* [Bug #803489] Tcl_FindNamespace problem in the Stubs table */
+#undef Tcl_CreateNamespace
+#undef Tcl_DeleteNamespace
+#undef Tcl_AppendExportList
+#undef Tcl_Export
+#undef Tcl_Import
+#undef Tcl_ForgetImport
+#undef Tcl_GetCurrentNamespace
+#undef Tcl_GetGlobalNamespace
+#undef Tcl_FindNamespace
+#undef Tcl_FindCommand
+#undef Tcl_GetCommandFromObj
+#undef Tcl_GetCommandFullName
+
 /*
  * WARNING: This file is automatically generated by the tools/genStubs.tcl
  * script.  Any modifications to the function declarations below should be made
@@ -28,466 +55,784 @@
  */
 
 /* Slot 0 is reserved */
-/* 1 */
-EXTERN int		TclAccessDeleteProc _ANSI_ARGS_((
-				TclAccessProc_ *proc));
-/* 2 */
-EXTERN int		TclAccessInsertProc _ANSI_ARGS_((
-				TclAccessProc_ *proc));
+/* Slot 1 is reserved */
+/* Slot 2 is reserved */
+#ifndef TclAllocateFreeObjects_TCL_DECLARED
+#define TclAllocateFreeObjects_TCL_DECLARED
 /* 3 */
-EXTERN void		TclAllocateFreeObjects _ANSI_ARGS_((void));
+EXTERN void		TclAllocateFreeObjects(void);
+#endif
 /* Slot 4 is reserved */
+#ifndef TclCleanupChildren_TCL_DECLARED
+#define TclCleanupChildren_TCL_DECLARED
 /* 5 */
-EXTERN int		TclCleanupChildren _ANSI_ARGS_((Tcl_Interp *interp,
-				int numPids, Tcl_Pid *pidPtr,
-				Tcl_Channel errorChan));
+EXTERN int		TclCleanupChildren(Tcl_Interp *interp, int numPids,
+				Tcl_Pid *pidPtr, Tcl_Channel errorChan);
+#endif
+#ifndef TclCleanupCommand_TCL_DECLARED
+#define TclCleanupCommand_TCL_DECLARED
 /* 6 */
-EXTERN void		TclCleanupCommand _ANSI_ARGS_((Command *cmdPtr));
+EXTERN void		TclCleanupCommand(Command *cmdPtr);
+#endif
+#ifndef TclCopyAndCollapse_TCL_DECLARED
+#define TclCopyAndCollapse_TCL_DECLARED
 /* 7 */
-EXTERN int		TclCopyAndCollapse _ANSI_ARGS_((int count,
-				CONST char *src, char *dst));
+EXTERN int		TclCopyAndCollapse(int count, CONST char *src,
+				char *dst);
+#endif
+#ifndef TclCopyChannel_TCL_DECLARED
+#define TclCopyChannel_TCL_DECLARED
 /* 8 */
-EXTERN int		TclCopyChannel _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		TclCopyChannel(Tcl_Interp *interp,
 				Tcl_Channel inChan, Tcl_Channel outChan,
-				int toRead, Tcl_Obj *cmdPtr));
+				int toRead, Tcl_Obj *cmdPtr);
+#endif
+#ifndef TclCreatePipeline_TCL_DECLARED
+#define TclCreatePipeline_TCL_DECLARED
 /* 9 */
-EXTERN int		TclCreatePipeline _ANSI_ARGS_((Tcl_Interp *interp,
-				int argc, CONST char **argv,
-				Tcl_Pid **pidArrayPtr, TclFile *inPipePtr,
-				TclFile *outPipePtr, TclFile *errFilePtr));
+EXTERN int		TclCreatePipeline(Tcl_Interp *interp, int argc,
+				CONST char **argv, Tcl_Pid **pidArrayPtr,
+				TclFile *inPipePtr, TclFile *outPipePtr,
+				TclFile *errFilePtr);
+#endif
+#ifndef TclCreateProc_TCL_DECLARED
+#define TclCreateProc_TCL_DECLARED
 /* 10 */
-EXTERN int		TclCreateProc _ANSI_ARGS_((Tcl_Interp *interp,
-				Namespace *nsPtr, CONST char *procName,
-				Tcl_Obj *argsPtr, Tcl_Obj *bodyPtr,
-				Proc **procPtrPtr));
+EXTERN int		TclCreateProc(Tcl_Interp *interp, Namespace *nsPtr,
+				CONST char *procName, Tcl_Obj *argsPtr,
+				Tcl_Obj *bodyPtr, Proc **procPtrPtr);
+#endif
+#ifndef TclDeleteCompiledLocalVars_TCL_DECLARED
+#define TclDeleteCompiledLocalVars_TCL_DECLARED
 /* 11 */
-EXTERN void		TclDeleteCompiledLocalVars _ANSI_ARGS_((Interp *iPtr,
-				CallFrame *framePtr));
+EXTERN void		TclDeleteCompiledLocalVars(Interp *iPtr,
+				CallFrame *framePtr);
+#endif
+#ifndef TclDeleteVars_TCL_DECLARED
+#define TclDeleteVars_TCL_DECLARED
 /* 12 */
-EXTERN void		TclDeleteVars _ANSI_ARGS_((Interp *iPtr,
-				Tcl_HashTable *tablePtr));
-/* 13 */
-EXTERN int		TclDoGlob _ANSI_ARGS_((Tcl_Interp *interp,
-				char *separators, Tcl_DString *headPtr,
-				char *tail, Tcl_GlobTypeData *types));
+EXTERN void		TclDeleteVars(Interp *iPtr,
+				TclVarHashTable *tablePtr);
+#endif
+/* Slot 13 is reserved */
+#ifndef TclDumpMemoryInfo_TCL_DECLARED
+#define TclDumpMemoryInfo_TCL_DECLARED
 /* 14 */
-EXTERN void		TclDumpMemoryInfo _ANSI_ARGS_((FILE *outFile));
+EXTERN int		TclDumpMemoryInfo(ClientData clientData, int flags);
+#endif
 /* Slot 15 is reserved */
+#ifndef TclExprFloatError_TCL_DECLARED
+#define TclExprFloatError_TCL_DECLARED
 /* 16 */
-EXTERN void		TclExprFloatError _ANSI_ARGS_((Tcl_Interp *interp,
-				double value));
+EXTERN void		TclExprFloatError(Tcl_Interp *interp, double value);
+#endif
 /* Slot 17 is reserved */
 /* Slot 18 is reserved */
 /* Slot 19 is reserved */
 /* Slot 20 is reserved */
 /* Slot 21 is reserved */
+#ifndef TclFindElement_TCL_DECLARED
+#define TclFindElement_TCL_DECLARED
 /* 22 */
-EXTERN int		TclFindElement _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		TclFindElement(Tcl_Interp *interp,
 				CONST char *listStr, int listLength,
 				CONST char **elementPtr,
 				CONST char **nextPtr, int *sizePtr,
-				int *bracePtr));
+				int *bracePtr);
+#endif
+#ifndef TclFindProc_TCL_DECLARED
+#define TclFindProc_TCL_DECLARED
 /* 23 */
-EXTERN Proc *		TclFindProc _ANSI_ARGS_((Interp *iPtr,
-				CONST char *procName));
+EXTERN Proc *		TclFindProc(Interp *iPtr, CONST char *procName);
+#endif
+#ifndef TclFormatInt_TCL_DECLARED
+#define TclFormatInt_TCL_DECLARED
 /* 24 */
-EXTERN int		TclFormatInt _ANSI_ARGS_((char *buffer, long n));
+EXTERN int		TclFormatInt(char *buffer, long n);
+#endif
+#ifndef TclFreePackageInfo_TCL_DECLARED
+#define TclFreePackageInfo_TCL_DECLARED
 /* 25 */
-EXTERN void		TclFreePackageInfo _ANSI_ARGS_((Interp *iPtr));
+EXTERN void		TclFreePackageInfo(Interp *iPtr);
+#endif
 /* Slot 26 is reserved */
-/* 27 */
-EXTERN int		TclGetDate _ANSI_ARGS_((char *p, Tcl_WideInt now,
-				long zone, Tcl_WideInt *timePtr));
+/* Slot 27 is reserved */
+#ifndef TclpGetDefaultStdChannel_TCL_DECLARED
+#define TclpGetDefaultStdChannel_TCL_DECLARED
 /* 28 */
-EXTERN Tcl_Channel	TclpGetDefaultStdChannel _ANSI_ARGS_((int type));
+EXTERN Tcl_Channel	TclpGetDefaultStdChannel(int type);
+#endif
 /* Slot 29 is reserved */
 /* Slot 30 is reserved */
+#ifndef TclGetExtension_TCL_DECLARED
+#define TclGetExtension_TCL_DECLARED
 /* 31 */
-EXTERN char *		TclGetExtension _ANSI_ARGS_((char *name));
+EXTERN CONST char *	TclGetExtension(CONST char *name);
+#endif
+#ifndef TclGetFrame_TCL_DECLARED
+#define TclGetFrame_TCL_DECLARED
 /* 32 */
-EXTERN int		TclGetFrame _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *str, CallFrame **framePtrPtr));
-/* 33 */
-EXTERN TclCmdProcType	TclGetInterpProc _ANSI_ARGS_((void));
+EXTERN int		TclGetFrame(Tcl_Interp *interp, CONST char *str,
+				CallFrame **framePtrPtr);
+#endif
+/* Slot 33 is reserved */
+#ifndef TclGetIntForIndex_TCL_DECLARED
+#define TclGetIntForIndex_TCL_DECLARED
 /* 34 */
-EXTERN int		TclGetIntForIndex _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *objPtr, int endValue, int *indexPtr));
+EXTERN int		TclGetIntForIndex(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, int endValue, int *indexPtr);
+#endif
 /* Slot 35 is reserved */
+#ifndef TclGetLong_TCL_DECLARED
+#define TclGetLong_TCL_DECLARED
 /* 36 */
-EXTERN int		TclGetLong _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *str, long *longPtr));
+EXTERN int		TclGetLong(Tcl_Interp *interp, CONST char *str,
+				long *longPtr);
+#endif
+#ifndef TclGetLoadedPackages_TCL_DECLARED
+#define TclGetLoadedPackages_TCL_DECLARED
 /* 37 */
-EXTERN int		TclGetLoadedPackages _ANSI_ARGS_((Tcl_Interp *interp,
-				char *targetName));
+EXTERN int		TclGetLoadedPackages(Tcl_Interp *interp,
+				char *targetName);
+#endif
+#ifndef TclGetNamespaceForQualName_TCL_DECLARED
+#define TclGetNamespaceForQualName_TCL_DECLARED
 /* 38 */
-EXTERN int		TclGetNamespaceForQualName _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *qualName,
-				Namespace *cxtNsPtr, int flags,
-				Namespace **nsPtrPtr,
+EXTERN int		TclGetNamespaceForQualName(Tcl_Interp *interp,
+				CONST char *qualName, Namespace *cxtNsPtr,
+				int flags, Namespace **nsPtrPtr,
 				Namespace **altNsPtrPtr,
 				Namespace **actualCxtPtrPtr,
-				CONST char **simpleNamePtr));
+				CONST char **simpleNamePtr);
+#endif
+#ifndef TclGetObjInterpProc_TCL_DECLARED
+#define TclGetObjInterpProc_TCL_DECLARED
 /* 39 */
-EXTERN TclObjCmdProcType TclGetObjInterpProc _ANSI_ARGS_((void));
+EXTERN TclObjCmdProcType TclGetObjInterpProc(void);
+#endif
+#ifndef TclGetOpenMode_TCL_DECLARED
+#define TclGetOpenMode_TCL_DECLARED
 /* 40 */
-EXTERN int		TclGetOpenMode _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *str, int *seekFlagPtr));
+EXTERN int		TclGetOpenMode(Tcl_Interp *interp, CONST char *str,
+				int *seekFlagPtr);
+#endif
+#ifndef TclGetOriginalCommand_TCL_DECLARED
+#define TclGetOriginalCommand_TCL_DECLARED
 /* 41 */
-EXTERN Tcl_Command	TclGetOriginalCommand _ANSI_ARGS_((
-				Tcl_Command command));
+EXTERN Tcl_Command	TclGetOriginalCommand(Tcl_Command command);
+#endif
+#ifndef TclpGetUserHome_TCL_DECLARED
+#define TclpGetUserHome_TCL_DECLARED
 /* 42 */
-EXTERN char *		TclpGetUserHome _ANSI_ARGS_((CONST char *name,
-				Tcl_DString *bufferPtr));
-/* 43 */
-EXTERN int		TclGlobalInvoke _ANSI_ARGS_((Tcl_Interp *interp,
-				int argc, CONST84 char **argv, int flags));
+EXTERN char *		TclpGetUserHome(CONST char *name,
+				Tcl_DString *bufferPtr);
+#endif
+/* Slot 43 is reserved */
+#ifndef TclGuessPackageName_TCL_DECLARED
+#define TclGuessPackageName_TCL_DECLARED
 /* 44 */
-EXTERN int		TclGuessPackageName _ANSI_ARGS_((
-				CONST char *fileName, Tcl_DString *bufPtr));
+EXTERN int		TclGuessPackageName(CONST char *fileName,
+				Tcl_DString *bufPtr);
+#endif
+#ifndef TclHideUnsafeCommands_TCL_DECLARED
+#define TclHideUnsafeCommands_TCL_DECLARED
 /* 45 */
-EXTERN int		TclHideUnsafeCommands _ANSI_ARGS_((
-				Tcl_Interp *interp));
+EXTERN int		TclHideUnsafeCommands(Tcl_Interp *interp);
+#endif
+#ifndef TclInExit_TCL_DECLARED
+#define TclInExit_TCL_DECLARED
 /* 46 */
-EXTERN int		TclInExit _ANSI_ARGS_((void));
+EXTERN int		TclInExit(void);
+#endif
 /* Slot 47 is reserved */
 /* Slot 48 is reserved */
-/* 49 */
-EXTERN Tcl_Obj *	TclIncrVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr,
-				long incrAmount, int part1NotParsed));
+/* Slot 49 is reserved */
+#ifndef TclInitCompiledLocals_TCL_DECLARED
+#define TclInitCompiledLocals_TCL_DECLARED
 /* 50 */
-EXTERN void		TclInitCompiledLocals _ANSI_ARGS_((
-				Tcl_Interp *interp, CallFrame *framePtr,
-				Namespace *nsPtr));
+EXTERN void		TclInitCompiledLocals(Tcl_Interp *interp,
+				CallFrame *framePtr, Namespace *nsPtr);
+#endif
+#ifndef TclInterpInit_TCL_DECLARED
+#define TclInterpInit_TCL_DECLARED
 /* 51 */
-EXTERN int		TclInterpInit _ANSI_ARGS_((Tcl_Interp *interp));
-/* 52 */
-EXTERN int		TclInvoke _ANSI_ARGS_((Tcl_Interp *interp, int argc,
-				CONST84 char **argv, int flags));
+EXTERN int		TclInterpInit(Tcl_Interp *interp);
+#endif
+/* Slot 52 is reserved */
+#ifndef TclInvokeObjectCommand_TCL_DECLARED
+#define TclInvokeObjectCommand_TCL_DECLARED
 /* 53 */
-EXTERN int		TclInvokeObjectCommand _ANSI_ARGS_((
-				ClientData clientData, Tcl_Interp *interp,
-				int argc, CONST84 char **argv));
+EXTERN int		TclInvokeObjectCommand(ClientData clientData,
+				Tcl_Interp *interp, int argc,
+				CONST84 char **argv);
+#endif
+#ifndef TclInvokeStringCommand_TCL_DECLARED
+#define TclInvokeStringCommand_TCL_DECLARED
 /* 54 */
-EXTERN int		TclInvokeStringCommand _ANSI_ARGS_((
-				ClientData clientData, Tcl_Interp *interp,
-				int objc, Tcl_Obj *CONST objv[]));
+EXTERN int		TclInvokeStringCommand(ClientData clientData,
+				Tcl_Interp *interp, int objc,
+				Tcl_Obj *CONST objv[]);
+#endif
+#ifndef TclIsProc_TCL_DECLARED
+#define TclIsProc_TCL_DECLARED
 /* 55 */
-EXTERN Proc *		TclIsProc _ANSI_ARGS_((Command *cmdPtr));
+EXTERN Proc *		TclIsProc(Command *cmdPtr);
+#endif
 /* Slot 56 is reserved */
 /* Slot 57 is reserved */
+#ifndef TclLookupVar_TCL_DECLARED
+#define TclLookupVar_TCL_DECLARED
 /* 58 */
-EXTERN Var *		TclLookupVar _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *part1, CONST char *part2,
-				int flags, CONST char *msg, int createPart1,
-				int createPart2, Var **arrayPtrPtr));
+EXTERN Var *		TclLookupVar(Tcl_Interp *interp, CONST char *part1,
+				CONST char *part2, int flags,
+				CONST char *msg, int createPart1,
+				int createPart2, Var **arrayPtrPtr);
+#endif
 /* Slot 59 is reserved */
+#ifndef TclNeedSpace_TCL_DECLARED
+#define TclNeedSpace_TCL_DECLARED
 /* 60 */
-EXTERN int		TclNeedSpace _ANSI_ARGS_((CONST char *start,
-				CONST char *end));
+EXTERN int		TclNeedSpace(CONST char *start, CONST char *end);
+#endif
+#ifndef TclNewProcBodyObj_TCL_DECLARED
+#define TclNewProcBodyObj_TCL_DECLARED
 /* 61 */
-EXTERN Tcl_Obj *	TclNewProcBodyObj _ANSI_ARGS_((Proc *procPtr));
+EXTERN Tcl_Obj *	TclNewProcBodyObj(Proc *procPtr);
+#endif
+#ifndef TclObjCommandComplete_TCL_DECLARED
+#define TclObjCommandComplete_TCL_DECLARED
 /* 62 */
-EXTERN int		TclObjCommandComplete _ANSI_ARGS_((Tcl_Obj *cmdPtr));
+EXTERN int		TclObjCommandComplete(Tcl_Obj *cmdPtr);
+#endif
+#ifndef TclObjInterpProc_TCL_DECLARED
+#define TclObjInterpProc_TCL_DECLARED
 /* 63 */
-EXTERN int		TclObjInterpProc _ANSI_ARGS_((ClientData clientData,
+EXTERN int		TclObjInterpProc(ClientData clientData,
 				Tcl_Interp *interp, int objc,
-				Tcl_Obj *CONST objv[]));
+				Tcl_Obj *CONST objv[]);
+#endif
+#ifndef TclObjInvoke_TCL_DECLARED
+#define TclObjInvoke_TCL_DECLARED
 /* 64 */
-EXTERN int		TclObjInvoke _ANSI_ARGS_((Tcl_Interp *interp,
-				int objc, Tcl_Obj *CONST objv[], int flags));
-/* 65 */
-EXTERN int		TclObjInvokeGlobal _ANSI_ARGS_((Tcl_Interp *interp,
-				int objc, Tcl_Obj *CONST objv[], int flags));
-/* 66 */
-EXTERN int		TclOpenFileChannelDeleteProc _ANSI_ARGS_((
-				TclOpenFileChannelProc_ *proc));
-/* 67 */
-EXTERN int		TclOpenFileChannelInsertProc _ANSI_ARGS_((
-				TclOpenFileChannelProc_ *proc));
+EXTERN int		TclObjInvoke(Tcl_Interp *interp, int objc,
+				Tcl_Obj *CONST objv[], int flags);
+#endif
+/* Slot 65 is reserved */
+/* Slot 66 is reserved */
+/* Slot 67 is reserved */
 /* Slot 68 is reserved */
+#ifndef TclpAlloc_TCL_DECLARED
+#define TclpAlloc_TCL_DECLARED
 /* 69 */
-EXTERN char *		TclpAlloc _ANSI_ARGS_((unsigned int size));
+EXTERN char *		TclpAlloc(unsigned int size);
+#endif
 /* Slot 70 is reserved */
 /* Slot 71 is reserved */
 /* Slot 72 is reserved */
 /* Slot 73 is reserved */
+#ifndef TclpFree_TCL_DECLARED
+#define TclpFree_TCL_DECLARED
 /* 74 */
-EXTERN void		TclpFree _ANSI_ARGS_((char *ptr));
+EXTERN void		TclpFree(char *ptr);
+#endif
+#ifndef TclpGetClicks_TCL_DECLARED
+#define TclpGetClicks_TCL_DECLARED
 /* 75 */
-EXTERN unsigned long	TclpGetClicks _ANSI_ARGS_((void));
+EXTERN unsigned long	TclpGetClicks(void);
+#endif
+#ifndef TclpGetSeconds_TCL_DECLARED
+#define TclpGetSeconds_TCL_DECLARED
 /* 76 */
-EXTERN unsigned long	TclpGetSeconds _ANSI_ARGS_((void));
+EXTERN unsigned long	TclpGetSeconds(void);
+#endif
+#ifndef TclpGetTime_TCL_DECLARED
+#define TclpGetTime_TCL_DECLARED
 /* 77 */
-EXTERN void		TclpGetTime _ANSI_ARGS_((Tcl_Time *time));
+EXTERN void		TclpGetTime(Tcl_Time *time);
+#endif
+#ifndef TclpGetTimeZone_TCL_DECLARED
+#define TclpGetTimeZone_TCL_DECLARED
 /* 78 */
-EXTERN int		TclpGetTimeZone _ANSI_ARGS_((Tcl_WideInt time));
+EXTERN int		TclpGetTimeZone(unsigned long time);
+#endif
 /* Slot 79 is reserved */
 /* Slot 80 is reserved */
+#ifndef TclpRealloc_TCL_DECLARED
+#define TclpRealloc_TCL_DECLARED
 /* 81 */
-EXTERN char *		TclpRealloc _ANSI_ARGS_((char *ptr,
-				unsigned int size));
+EXTERN char *		TclpRealloc(char *ptr, unsigned int size);
+#endif
 /* Slot 82 is reserved */
 /* Slot 83 is reserved */
 /* Slot 84 is reserved */
 /* Slot 85 is reserved */
 /* Slot 86 is reserved */
 /* Slot 87 is reserved */
+#ifndef TclPrecTraceProc_TCL_DECLARED
+#define TclPrecTraceProc_TCL_DECLARED
 /* 88 */
-EXTERN char *		TclPrecTraceProc _ANSI_ARGS_((ClientData clientData,
+EXTERN char *		TclPrecTraceProc(ClientData clientData,
 				Tcl_Interp *interp, CONST char *name1,
-				CONST char *name2, int flags));
+				CONST char *name2, int flags);
+#endif
+#ifndef TclPreventAliasLoop_TCL_DECLARED
+#define TclPreventAliasLoop_TCL_DECLARED
 /* 89 */
-EXTERN int		TclPreventAliasLoop _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Interp *cmdInterp, Tcl_Command cmd));
+EXTERN int		TclPreventAliasLoop(Tcl_Interp *interp,
+				Tcl_Interp *cmdInterp, Tcl_Command cmd);
+#endif
 /* Slot 90 is reserved */
+#ifndef TclProcCleanupProc_TCL_DECLARED
+#define TclProcCleanupProc_TCL_DECLARED
 /* 91 */
-EXTERN void		TclProcCleanupProc _ANSI_ARGS_((Proc *procPtr));
+EXTERN void		TclProcCleanupProc(Proc *procPtr);
+#endif
+#ifndef TclProcCompileProc_TCL_DECLARED
+#define TclProcCompileProc_TCL_DECLARED
 /* 92 */
-EXTERN int		TclProcCompileProc _ANSI_ARGS_((Tcl_Interp *interp,
-				Proc *procPtr, Tcl_Obj *bodyPtr,
-				Namespace *nsPtr, CONST char *description,
-				CONST char *procName));
+EXTERN int		TclProcCompileProc(Tcl_Interp *interp, Proc *procPtr,
+				Tcl_Obj *bodyPtr, Namespace *nsPtr,
+				CONST char *description,
+				CONST char *procName);
+#endif
+#ifndef TclProcDeleteProc_TCL_DECLARED
+#define TclProcDeleteProc_TCL_DECLARED
 /* 93 */
-EXTERN void		TclProcDeleteProc _ANSI_ARGS_((ClientData clientData));
-/* 94 */
-EXTERN int		TclProcInterpProc _ANSI_ARGS_((ClientData clientData,
-				Tcl_Interp *interp, int argc,
-				CONST84 char **argv));
+EXTERN void		TclProcDeleteProc(ClientData clientData);
+#endif
+/* Slot 94 is reserved */
 /* Slot 95 is reserved */
+#ifndef TclRenameCommand_TCL_DECLARED
+#define TclRenameCommand_TCL_DECLARED
 /* 96 */
-EXTERN int		TclRenameCommand _ANSI_ARGS_((Tcl_Interp *interp,
-				char *oldName, char *newName));
+EXTERN int		TclRenameCommand(Tcl_Interp *interp,
+				CONST char *oldName, CONST char *newName);
+#endif
+#ifndef TclResetShadowedCmdRefs_TCL_DECLARED
+#define TclResetShadowedCmdRefs_TCL_DECLARED
 /* 97 */
-EXTERN void		TclResetShadowedCmdRefs _ANSI_ARGS_((
-				Tcl_Interp *interp, Command *newCmdPtr));
+EXTERN void		TclResetShadowedCmdRefs(Tcl_Interp *interp,
+				Command *newCmdPtr);
+#endif
+#ifndef TclServiceIdle_TCL_DECLARED
+#define TclServiceIdle_TCL_DECLARED
 /* 98 */
-EXTERN int		TclServiceIdle _ANSI_ARGS_((void));
+EXTERN int		TclServiceIdle(void);
+#endif
 /* Slot 99 is reserved */
 /* Slot 100 is reserved */
+#ifndef TclSetPreInitScript_TCL_DECLARED
+#define TclSetPreInitScript_TCL_DECLARED
 /* 101 */
-EXTERN char *		TclSetPreInitScript _ANSI_ARGS_((char *string));
+EXTERN char *		TclSetPreInitScript(char *string);
+#endif
+#ifndef TclSetupEnv_TCL_DECLARED
+#define TclSetupEnv_TCL_DECLARED
 /* 102 */
-EXTERN void		TclSetupEnv _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		TclSetupEnv(Tcl_Interp *interp);
+#endif
+#ifndef TclSockGetPort_TCL_DECLARED
+#define TclSockGetPort_TCL_DECLARED
 /* 103 */
-EXTERN int		TclSockGetPort _ANSI_ARGS_((Tcl_Interp *interp,
-				char *str, char *proto, int *portPtr));
+EXTERN int		TclSockGetPort(Tcl_Interp *interp, CONST char *str,
+				CONST char *proto, int *portPtr);
+#endif
+#ifndef TclSockMinimumBuffersOld_TCL_DECLARED
+#define TclSockMinimumBuffersOld_TCL_DECLARED
 /* 104 */
-EXTERN int		TclSockMinimumBuffersOld _ANSI_ARGS_((int sock,
-				int size));
+EXTERN int		TclSockMinimumBuffersOld(int sock, int size);
+#endif
 /* Slot 105 is reserved */
-/* 106 */
-EXTERN int		TclStatDeleteProc _ANSI_ARGS_((TclStatProc_ *proc));
-/* 107 */
-EXTERN int		TclStatInsertProc _ANSI_ARGS_((TclStatProc_ *proc));
+/* Slot 106 is reserved */
+/* Slot 107 is reserved */
+#ifndef TclTeardownNamespace_TCL_DECLARED
+#define TclTeardownNamespace_TCL_DECLARED
 /* 108 */
-EXTERN void		TclTeardownNamespace _ANSI_ARGS_((Namespace *nsPtr));
+EXTERN void		TclTeardownNamespace(Namespace *nsPtr);
+#endif
+#ifndef TclUpdateReturnInfo_TCL_DECLARED
+#define TclUpdateReturnInfo_TCL_DECLARED
 /* 109 */
-EXTERN int		TclUpdateReturnInfo _ANSI_ARGS_((Interp *iPtr));
+EXTERN int		TclUpdateReturnInfo(Interp *iPtr);
+#endif
+#ifndef TclSockMinimumBuffers_TCL_DECLARED
+#define TclSockMinimumBuffers_TCL_DECLARED
 /* 110 */
-EXTERN int		TclSockMinimumBuffers _ANSI_ARGS_((VOID *sock,
-				int size));
+EXTERN int		TclSockMinimumBuffers(VOID *sock, int size);
+#endif
+#ifndef Tcl_AddInterpResolvers_TCL_DECLARED
+#define Tcl_AddInterpResolvers_TCL_DECLARED
 /* 111 */
-EXTERN void		Tcl_AddInterpResolvers _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name,
+EXTERN void		Tcl_AddInterpResolvers(Tcl_Interp *interp,
+				CONST char *name,
 				Tcl_ResolveCmdProc *cmdProc,
 				Tcl_ResolveVarProc *varProc,
-				Tcl_ResolveCompiledVarProc *compiledVarProc));
+				Tcl_ResolveCompiledVarProc *compiledVarProc);
+#endif
+#ifndef Tcl_AppendExportList_TCL_DECLARED
+#define Tcl_AppendExportList_TCL_DECLARED
 /* 112 */
-EXTERN int		Tcl_AppendExportList _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Namespace *nsPtr, Tcl_Obj *objPtr));
+EXTERN int		Tcl_AppendExportList(Tcl_Interp *interp,
+				Tcl_Namespace *nsPtr, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_CreateNamespace_TCL_DECLARED
+#define Tcl_CreateNamespace_TCL_DECLARED
 /* 113 */
-EXTERN Tcl_Namespace *	Tcl_CreateNamespace _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Namespace *	Tcl_CreateNamespace(Tcl_Interp *interp,
 				CONST char *name, ClientData clientData,
-				Tcl_NamespaceDeleteProc *deleteProc));
+				Tcl_NamespaceDeleteProc *deleteProc);
+#endif
+#ifndef Tcl_DeleteNamespace_TCL_DECLARED
+#define Tcl_DeleteNamespace_TCL_DECLARED
 /* 114 */
-EXTERN void		Tcl_DeleteNamespace _ANSI_ARGS_((
-				Tcl_Namespace *nsPtr));
+EXTERN void		Tcl_DeleteNamespace(Tcl_Namespace *nsPtr);
+#endif
+#ifndef Tcl_Export_TCL_DECLARED
+#define Tcl_Export_TCL_DECLARED
 /* 115 */
-EXTERN int		Tcl_Export _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Namespace *nsPtr, CONST char *pattern,
-				int resetListFirst));
+EXTERN int		Tcl_Export(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+				CONST char *pattern, int resetListFirst);
+#endif
+#ifndef Tcl_FindCommand_TCL_DECLARED
+#define Tcl_FindCommand_TCL_DECLARED
 /* 116 */
-EXTERN Tcl_Command	Tcl_FindCommand _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *name,
-				Tcl_Namespace *contextNsPtr, int flags));
+EXTERN Tcl_Command	Tcl_FindCommand(Tcl_Interp *interp, CONST char *name,
+				Tcl_Namespace *contextNsPtr, int flags);
+#endif
+#ifndef Tcl_FindNamespace_TCL_DECLARED
+#define Tcl_FindNamespace_TCL_DECLARED
 /* 117 */
-EXTERN Tcl_Namespace *	Tcl_FindNamespace _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Namespace *	Tcl_FindNamespace(Tcl_Interp *interp,
 				CONST char *name,
-				Tcl_Namespace *contextNsPtr, int flags));
+				Tcl_Namespace *contextNsPtr, int flags);
+#endif
+#ifndef Tcl_GetInterpResolvers_TCL_DECLARED
+#define Tcl_GetInterpResolvers_TCL_DECLARED
 /* 118 */
-EXTERN int		Tcl_GetInterpResolvers _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name,
-				Tcl_ResolverInfo *resInfo));
+EXTERN int		Tcl_GetInterpResolvers(Tcl_Interp *interp,
+				CONST char *name, Tcl_ResolverInfo *resInfo);
+#endif
+#ifndef Tcl_GetNamespaceResolvers_TCL_DECLARED
+#define Tcl_GetNamespaceResolvers_TCL_DECLARED
 /* 119 */
-EXTERN int		Tcl_GetNamespaceResolvers _ANSI_ARGS_((
+EXTERN int		Tcl_GetNamespaceResolvers(
 				Tcl_Namespace *namespacePtr,
-				Tcl_ResolverInfo *resInfo));
+				Tcl_ResolverInfo *resInfo);
+#endif
+#ifndef Tcl_FindNamespaceVar_TCL_DECLARED
+#define Tcl_FindNamespaceVar_TCL_DECLARED
 /* 120 */
-EXTERN Tcl_Var		Tcl_FindNamespaceVar _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN Tcl_Var		Tcl_FindNamespaceVar(Tcl_Interp *interp,
 				CONST char *name,
-				Tcl_Namespace *contextNsPtr, int flags));
+				Tcl_Namespace *contextNsPtr, int flags);
+#endif
+#ifndef Tcl_ForgetImport_TCL_DECLARED
+#define Tcl_ForgetImport_TCL_DECLARED
 /* 121 */
-EXTERN int		Tcl_ForgetImport _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Namespace *nsPtr, CONST char *pattern));
+EXTERN int		Tcl_ForgetImport(Tcl_Interp *interp,
+				Tcl_Namespace *nsPtr, CONST char *pattern);
+#endif
+#ifndef Tcl_GetCommandFromObj_TCL_DECLARED
+#define Tcl_GetCommandFromObj_TCL_DECLARED
 /* 122 */
-EXTERN Tcl_Command	Tcl_GetCommandFromObj _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *objPtr));
+EXTERN Tcl_Command	Tcl_GetCommandFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetCommandFullName_TCL_DECLARED
+#define Tcl_GetCommandFullName_TCL_DECLARED
 /* 123 */
-EXTERN void		Tcl_GetCommandFullName _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Command command,
-				Tcl_Obj *objPtr));
+EXTERN void		Tcl_GetCommandFullName(Tcl_Interp *interp,
+				Tcl_Command command, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_GetCurrentNamespace_TCL_DECLARED
+#define Tcl_GetCurrentNamespace_TCL_DECLARED
 /* 124 */
-EXTERN Tcl_Namespace *	Tcl_GetCurrentNamespace _ANSI_ARGS_((
-				Tcl_Interp *interp));
+EXTERN Tcl_Namespace *	Tcl_GetCurrentNamespace(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetGlobalNamespace_TCL_DECLARED
+#define Tcl_GetGlobalNamespace_TCL_DECLARED
 /* 125 */
-EXTERN Tcl_Namespace *	Tcl_GetGlobalNamespace _ANSI_ARGS_((
-				Tcl_Interp *interp));
+EXTERN Tcl_Namespace *	Tcl_GetGlobalNamespace(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_GetVariableFullName_TCL_DECLARED
+#define Tcl_GetVariableFullName_TCL_DECLARED
 /* 126 */
-EXTERN void		Tcl_GetVariableFullName _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Var variable,
-				Tcl_Obj *objPtr));
+EXTERN void		Tcl_GetVariableFullName(Tcl_Interp *interp,
+				Tcl_Var variable, Tcl_Obj *objPtr);
+#endif
+#ifndef Tcl_Import_TCL_DECLARED
+#define Tcl_Import_TCL_DECLARED
 /* 127 */
-EXTERN int		Tcl_Import _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Namespace *nsPtr, CONST char *pattern,
-				int allowOverwrite));
+EXTERN int		Tcl_Import(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
+				CONST char *pattern, int allowOverwrite);
+#endif
+#ifndef Tcl_PopCallFrame_TCL_DECLARED
+#define Tcl_PopCallFrame_TCL_DECLARED
 /* 128 */
-EXTERN void		Tcl_PopCallFrame _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN void		Tcl_PopCallFrame(Tcl_Interp *interp);
+#endif
+#ifndef Tcl_PushCallFrame_TCL_DECLARED
+#define Tcl_PushCallFrame_TCL_DECLARED
 /* 129 */
-EXTERN int		Tcl_PushCallFrame _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		Tcl_PushCallFrame(Tcl_Interp *interp,
 				Tcl_CallFrame *framePtr,
-				Tcl_Namespace *nsPtr, int isProcCallFrame));
+				Tcl_Namespace *nsPtr, int isProcCallFrame);
+#endif
+#ifndef Tcl_RemoveInterpResolvers_TCL_DECLARED
+#define Tcl_RemoveInterpResolvers_TCL_DECLARED
 /* 130 */
-EXTERN int		Tcl_RemoveInterpResolvers _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *name));
+EXTERN int		Tcl_RemoveInterpResolvers(Tcl_Interp *interp,
+				CONST char *name);
+#endif
+#ifndef Tcl_SetNamespaceResolvers_TCL_DECLARED
+#define Tcl_SetNamespaceResolvers_TCL_DECLARED
 /* 131 */
-EXTERN void		Tcl_SetNamespaceResolvers _ANSI_ARGS_((
+EXTERN void		Tcl_SetNamespaceResolvers(
 				Tcl_Namespace *namespacePtr,
 				Tcl_ResolveCmdProc *cmdProc,
 				Tcl_ResolveVarProc *varProc,
-				Tcl_ResolveCompiledVarProc *compiledVarProc));
+				Tcl_ResolveCompiledVarProc *compiledVarProc);
+#endif
+#ifndef TclpHasSockets_TCL_DECLARED
+#define TclpHasSockets_TCL_DECLARED
 /* 132 */
-EXTERN int		TclpHasSockets _ANSI_ARGS_((Tcl_Interp *interp));
+EXTERN int		TclpHasSockets(Tcl_Interp *interp);
+#endif
+#ifndef TclpGetDate_TCL_DECLARED
+#define TclpGetDate_TCL_DECLARED
 /* 133 */
-EXTERN struct tm *	TclpGetDate _ANSI_ARGS_((TclpTime_t time, int useGMT));
-/* 134 */
-EXTERN size_t		TclpStrftime _ANSI_ARGS_((char *s, size_t maxsize,
-				CONST char *format, CONST struct tm *t,
-				int useGMT));
-/* 135 */
-EXTERN int		TclpCheckStackSpace _ANSI_ARGS_((void));
+EXTERN struct tm *	TclpGetDate(CONST time_t *time, int useGMT);
+#endif
+/* Slot 134 is reserved */
+/* Slot 135 is reserved */
 /* Slot 136 is reserved */
 /* Slot 137 is reserved */
+#ifndef TclGetEnv_TCL_DECLARED
+#define TclGetEnv_TCL_DECLARED
 /* 138 */
-EXTERN CONST84_RETURN char * TclGetEnv _ANSI_ARGS_((CONST char *name,
-				Tcl_DString *valuePtr));
+EXTERN CONST84_RETURN char * TclGetEnv(CONST char *name,
+				Tcl_DString *valuePtr);
+#endif
 /* Slot 139 is reserved */
-/* 140 */
-EXTERN int		TclLooksLikeInt _ANSI_ARGS_((CONST char *bytes,
-				int length));
+/* Slot 140 is reserved */
+#ifndef TclpGetCwd_TCL_DECLARED
+#define TclpGetCwd_TCL_DECLARED
 /* 141 */
-EXTERN CONST84_RETURN char * TclpGetCwd _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_DString *cwdPtr));
+EXTERN CONST84_RETURN char * TclpGetCwd(Tcl_Interp *interp,
+				Tcl_DString *cwdPtr);
+#endif
+#ifndef TclSetByteCodeFromAny_TCL_DECLARED
+#define TclSetByteCodeFromAny_TCL_DECLARED
 /* 142 */
-EXTERN int		TclSetByteCodeFromAny _ANSI_ARGS_((
-				Tcl_Interp *interp, Tcl_Obj *objPtr,
-				CompileHookProc *hookProc,
-				ClientData clientData));
+EXTERN int		TclSetByteCodeFromAny(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, CompileHookProc *hookProc,
+				ClientData clientData);
+#endif
+#ifndef TclAddLiteralObj_TCL_DECLARED
+#define TclAddLiteralObj_TCL_DECLARED
 /* 143 */
-EXTERN int		TclAddLiteralObj _ANSI_ARGS_((
-				struct CompileEnv *envPtr, Tcl_Obj *objPtr,
-				LiteralEntry **litPtrPtr));
+EXTERN int		TclAddLiteralObj(struct CompileEnv *envPtr,
+				Tcl_Obj *objPtr, LiteralEntry **litPtrPtr);
+#endif
+#ifndef TclHideLiteral_TCL_DECLARED
+#define TclHideLiteral_TCL_DECLARED
 /* 144 */
-EXTERN void		TclHideLiteral _ANSI_ARGS_((Tcl_Interp *interp,
-				struct CompileEnv *envPtr, int index));
+EXTERN void		TclHideLiteral(Tcl_Interp *interp,
+				struct CompileEnv *envPtr, int index);
+#endif
+#ifndef TclGetAuxDataType_TCL_DECLARED
+#define TclGetAuxDataType_TCL_DECLARED
 /* 145 */
-EXTERN struct AuxDataType * TclGetAuxDataType _ANSI_ARGS_((char *typeName));
+EXTERN struct AuxDataType * TclGetAuxDataType(char *typeName);
+#endif
+#ifndef TclHandleCreate_TCL_DECLARED
+#define TclHandleCreate_TCL_DECLARED
 /* 146 */
-EXTERN TclHandle	TclHandleCreate _ANSI_ARGS_((VOID *ptr));
+EXTERN TclHandle	TclHandleCreate(VOID *ptr);
+#endif
+#ifndef TclHandleFree_TCL_DECLARED
+#define TclHandleFree_TCL_DECLARED
 /* 147 */
-EXTERN void		TclHandleFree _ANSI_ARGS_((TclHandle handle));
+EXTERN void		TclHandleFree(TclHandle handle);
+#endif
+#ifndef TclHandlePreserve_TCL_DECLARED
+#define TclHandlePreserve_TCL_DECLARED
 /* 148 */
-EXTERN TclHandle	TclHandlePreserve _ANSI_ARGS_((TclHandle handle));
+EXTERN TclHandle	TclHandlePreserve(TclHandle handle);
+#endif
+#ifndef TclHandleRelease_TCL_DECLARED
+#define TclHandleRelease_TCL_DECLARED
 /* 149 */
-EXTERN void		TclHandleRelease _ANSI_ARGS_((TclHandle handle));
+EXTERN void		TclHandleRelease(TclHandle handle);
+#endif
+#ifndef TclRegAbout_TCL_DECLARED
+#define TclRegAbout_TCL_DECLARED
 /* 150 */
-EXTERN int		TclRegAbout _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_RegExp re));
+EXTERN int		TclRegAbout(Tcl_Interp *interp, Tcl_RegExp re);
+#endif
+#ifndef TclRegExpRangeUniChar_TCL_DECLARED
+#define TclRegExpRangeUniChar_TCL_DECLARED
 /* 151 */
-EXTERN void		TclRegExpRangeUniChar _ANSI_ARGS_((Tcl_RegExp re,
-				int index, int *startPtr, int *endPtr));
+EXTERN void		TclRegExpRangeUniChar(Tcl_RegExp re, int index,
+				int *startPtr, int *endPtr);
+#endif
+#ifndef TclSetLibraryPath_TCL_DECLARED
+#define TclSetLibraryPath_TCL_DECLARED
 /* 152 */
-EXTERN void		TclSetLibraryPath _ANSI_ARGS_((Tcl_Obj *pathPtr));
+EXTERN void		TclSetLibraryPath(Tcl_Obj *pathPtr);
+#endif
+#ifndef TclGetLibraryPath_TCL_DECLARED
+#define TclGetLibraryPath_TCL_DECLARED
 /* 153 */
-EXTERN Tcl_Obj *	TclGetLibraryPath _ANSI_ARGS_((void));
+EXTERN Tcl_Obj *	TclGetLibraryPath(void);
+#endif
 /* Slot 154 is reserved */
 /* Slot 155 is reserved */
+#ifndef TclRegError_TCL_DECLARED
+#define TclRegError_TCL_DECLARED
 /* 156 */
-EXTERN void		TclRegError _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *msg, int status));
+EXTERN void		TclRegError(Tcl_Interp *interp, CONST char *msg,
+				int status);
+#endif
+#ifndef TclVarTraceExists_TCL_DECLARED
+#define TclVarTraceExists_TCL_DECLARED
 /* 157 */
-EXTERN Var *		TclVarTraceExists _ANSI_ARGS_((Tcl_Interp *interp,
-				CONST char *varName));
+EXTERN Var *		TclVarTraceExists(Tcl_Interp *interp,
+				CONST char *varName);
+#endif
+#ifndef TclSetStartupScriptFileName_TCL_DECLARED
+#define TclSetStartupScriptFileName_TCL_DECLARED
 /* 158 */
-EXTERN void		TclSetStartupScriptFileName _ANSI_ARGS_((
-				CONST char *filename));
+EXTERN void		TclSetStartupScriptFileName(CONST char *filename);
+#endif
+#ifndef TclGetStartupScriptFileName_TCL_DECLARED
+#define TclGetStartupScriptFileName_TCL_DECLARED
 /* 159 */
-EXTERN CONST84_RETURN char * TclGetStartupScriptFileName _ANSI_ARGS_((void));
+EXTERN CONST84_RETURN char * TclGetStartupScriptFileName(void);
+#endif
 /* Slot 160 is reserved */
+#ifndef TclChannelTransform_TCL_DECLARED
+#define TclChannelTransform_TCL_DECLARED
 /* 161 */
-EXTERN int		TclChannelTransform _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan, Tcl_Obj *cmdObjPtr));
+EXTERN int		TclChannelTransform(Tcl_Interp *interp,
+				Tcl_Channel chan, Tcl_Obj *cmdObjPtr);
+#endif
+#ifndef TclChannelEventScriptInvoker_TCL_DECLARED
+#define TclChannelEventScriptInvoker_TCL_DECLARED
 /* 162 */
-EXTERN void		TclChannelEventScriptInvoker _ANSI_ARGS_((
-				ClientData clientData, int flags));
+EXTERN void		TclChannelEventScriptInvoker(ClientData clientData,
+				int flags);
+#endif
+#ifndef TclGetInstructionTable_TCL_DECLARED
+#define TclGetInstructionTable_TCL_DECLARED
 /* 163 */
-EXTERN VOID *		TclGetInstructionTable _ANSI_ARGS_((void));
+EXTERN VOID *		TclGetInstructionTable(void);
+#endif
+#ifndef TclExpandCodeArray_TCL_DECLARED
+#define TclExpandCodeArray_TCL_DECLARED
 /* 164 */
-EXTERN void		TclExpandCodeArray _ANSI_ARGS_((VOID *envPtr));
+EXTERN void		TclExpandCodeArray(VOID *envPtr);
+#endif
+#ifndef TclpSetInitialEncodings_TCL_DECLARED
+#define TclpSetInitialEncodings_TCL_DECLARED
 /* 165 */
-EXTERN void		TclpSetInitialEncodings _ANSI_ARGS_((void));
+EXTERN void		TclpSetInitialEncodings(void);
+#endif
+#ifndef TclListObjSetElement_TCL_DECLARED
+#define TclListObjSetElement_TCL_DECLARED
 /* 166 */
-EXTERN int		TclListObjSetElement _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		TclListObjSetElement(Tcl_Interp *interp,
 				Tcl_Obj *listPtr, int index,
-				Tcl_Obj *valuePtr));
+				Tcl_Obj *valuePtr);
+#endif
+#ifndef TclSetStartupScriptPath_TCL_DECLARED
+#define TclSetStartupScriptPath_TCL_DECLARED
 /* 167 */
-EXTERN void		TclSetStartupScriptPath _ANSI_ARGS_((
-				Tcl_Obj *pathPtr));
+EXTERN void		TclSetStartupScriptPath(Tcl_Obj *pathPtr);
+#endif
+#ifndef TclGetStartupScriptPath_TCL_DECLARED
+#define TclGetStartupScriptPath_TCL_DECLARED
 /* 168 */
-EXTERN Tcl_Obj *	TclGetStartupScriptPath _ANSI_ARGS_((void));
+EXTERN Tcl_Obj *	TclGetStartupScriptPath(void);
+#endif
+#ifndef TclpUtfNcmp2_TCL_DECLARED
+#define TclpUtfNcmp2_TCL_DECLARED
 /* 169 */
-EXTERN int		TclpUtfNcmp2 _ANSI_ARGS_((CONST char *s1,
-				CONST char *s2, unsigned long n));
+EXTERN int		TclpUtfNcmp2(CONST char *s1, CONST char *s2,
+				unsigned long n);
+#endif
+#ifndef TclCheckInterpTraces_TCL_DECLARED
+#define TclCheckInterpTraces_TCL_DECLARED
 /* 170 */
-EXTERN int		TclCheckInterpTraces _ANSI_ARGS_((Tcl_Interp *interp,
+EXTERN int		TclCheckInterpTraces(Tcl_Interp *interp,
 				CONST char *command, int numChars,
 				Command *cmdPtr, int result, int traceFlags,
-				int objc, Tcl_Obj *CONST objv[]));
+				int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef TclCheckExecutionTraces_TCL_DECLARED
+#define TclCheckExecutionTraces_TCL_DECLARED
 /* 171 */
-EXTERN int		TclCheckExecutionTraces _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *command,
-				int numChars, Command *cmdPtr, int result,
-				int traceFlags, int objc,
-				Tcl_Obj *CONST objv[]));
+EXTERN int		TclCheckExecutionTraces(Tcl_Interp *interp,
+				CONST char *command, int numChars,
+				Command *cmdPtr, int result, int traceFlags,
+				int objc, Tcl_Obj *CONST objv[]);
+#endif
+#ifndef TclInThreadExit_TCL_DECLARED
+#define TclInThreadExit_TCL_DECLARED
 /* 172 */
-EXTERN int		TclInThreadExit _ANSI_ARGS_((void));
+EXTERN int		TclInThreadExit(void);
+#endif
+#ifndef TclUniCharMatch_TCL_DECLARED
+#define TclUniCharMatch_TCL_DECLARED
 /* 173 */
-EXTERN int		TclUniCharMatch _ANSI_ARGS_((
-				CONST Tcl_UniChar *string, int strLen,
-				CONST Tcl_UniChar *pattern, int ptnLen,
-				int nocase));
+EXTERN int		TclUniCharMatch(CONST Tcl_UniChar *string,
+				int strLen, CONST Tcl_UniChar *pattern,
+				int ptnLen, int flags);
+#endif
 /* Slot 174 is reserved */
-/* Slot 175 is reserved */
-/* Slot 176 is reserved */
-/* Slot 177 is reserved */
-/* Slot 178 is reserved */
-/* Slot 179 is reserved */
+#ifndef TclCallVarTraces_TCL_DECLARED
+#define TclCallVarTraces_TCL_DECLARED
+/* 175 */
+EXTERN int		TclCallVarTraces(Interp *iPtr, Var *arrayPtr,
+				Var *varPtr, CONST char *part1,
+				CONST char *part2, int flags,
+				int leaveErrMsg);
+#endif
+#ifndef TclCleanupVar_TCL_DECLARED
+#define TclCleanupVar_TCL_DECLARED
+/* 176 */
+EXTERN void		TclCleanupVar(Var *varPtr, Var *arrayPtr);
+#endif
+#ifndef TclVarErrMsg_TCL_DECLARED
+#define TclVarErrMsg_TCL_DECLARED
+/* 177 */
+EXTERN void		TclVarErrMsg(Tcl_Interp *interp, CONST char *part1,
+				CONST char *part2, CONST char *operation,
+				CONST char *reason);
+#endif
+#ifndef Tcl_SetStartupScript_TCL_DECLARED
+#define Tcl_SetStartupScript_TCL_DECLARED
+/* 178 */
+EXTERN void		Tcl_SetStartupScript(Tcl_Obj *pathPtr,
+				CONST char *encodingName);
+#endif
+#ifndef Tcl_GetStartupScript_TCL_DECLARED
+#define Tcl_GetStartupScript_TCL_DECLARED
+/* 179 */
+EXTERN Tcl_Obj *	Tcl_GetStartupScript(CONST char **encodingNamePtr);
+#endif
 /* Slot 180 is reserved */
 /* Slot 181 is reserved */
+#ifndef TclpLocaltime_TCL_DECLARED
+#define TclpLocaltime_TCL_DECLARED
 /* 182 */
-EXTERN struct tm *	TclpLocaltime _ANSI_ARGS_((TclpTime_t_CONST clock));
+EXTERN struct tm *	TclpLocaltime(CONST time_t *clock);
+#endif
+#ifndef TclpGmtime_TCL_DECLARED
+#define TclpGmtime_TCL_DECLARED
 /* 183 */
-EXTERN struct tm *	TclpGmtime _ANSI_ARGS_((TclpTime_t_CONST clock));
+EXTERN struct tm *	TclpGmtime(CONST time_t *clock);
+#endif
 /* Slot 184 is reserved */
 /* Slot 185 is reserved */
 /* Slot 186 is reserved */
@@ -502,249 +847,400 @@ EXTERN struct tm *	TclpGmtime _ANSI_ARGS_((TclpTime_t_CONST clock));
 /* Slot 195 is reserved */
 /* Slot 196 is reserved */
 /* Slot 197 is reserved */
-/* Slot 198 is reserved */
-/* 199 */
-EXTERN int		TclMatchIsTrivial _ANSI_ARGS_((CONST char *pattern));
-/* Slot 200 is reserved */
-/* Slot 201 is reserved */
-/* Slot 202 is reserved */
-/* Slot 203 is reserved */
-/* Slot 204 is reserved */
-/* Slot 205 is reserved */
-/* Slot 206 is reserved */
-/* Slot 207 is reserved */
-/* Slot 208 is reserved */
+#ifndef TclObjGetFrame_TCL_DECLARED
+#define TclObjGetFrame_TCL_DECLARED
+/* 198 */
+EXTERN int		TclObjGetFrame(Tcl_Interp *interp, Tcl_Obj *objPtr,
+				CallFrame **framePtrPtr);
+#endif
+/* Slot 199 is reserved */
+#ifndef TclpObjRemoveDirectory_TCL_DECLARED
+#define TclpObjRemoveDirectory_TCL_DECLARED
+/* 200 */
+EXTERN int		TclpObjRemoveDirectory(Tcl_Obj *pathPtr,
+				int recursive, Tcl_Obj **errorPtr);
+#endif
+#ifndef TclpObjCopyDirectory_TCL_DECLARED
+#define TclpObjCopyDirectory_TCL_DECLARED
+/* 201 */
+EXTERN int		TclpObjCopyDirectory(Tcl_Obj *srcPathPtr,
+				Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr);
+#endif
+#ifndef TclpObjCreateDirectory_TCL_DECLARED
+#define TclpObjCreateDirectory_TCL_DECLARED
+/* 202 */
+EXTERN int		TclpObjCreateDirectory(Tcl_Obj *pathPtr);
+#endif
+#ifndef TclpObjDeleteFile_TCL_DECLARED
+#define TclpObjDeleteFile_TCL_DECLARED
+/* 203 */
+EXTERN int		TclpObjDeleteFile(Tcl_Obj *pathPtr);
+#endif
+#ifndef TclpObjCopyFile_TCL_DECLARED
+#define TclpObjCopyFile_TCL_DECLARED
+/* 204 */
+EXTERN int		TclpObjCopyFile(Tcl_Obj *srcPathPtr,
+				Tcl_Obj *destPathPtr);
+#endif
+#ifndef TclpObjRenameFile_TCL_DECLARED
+#define TclpObjRenameFile_TCL_DECLARED
+/* 205 */
+EXTERN int		TclpObjRenameFile(Tcl_Obj *srcPathPtr,
+				Tcl_Obj *destPathPtr);
+#endif
+#ifndef TclpObjStat_TCL_DECLARED
+#define TclpObjStat_TCL_DECLARED
+/* 206 */
+EXTERN int		TclpObjStat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
+#endif
+#ifndef TclpObjAccess_TCL_DECLARED
+#define TclpObjAccess_TCL_DECLARED
+/* 207 */
+EXTERN int		TclpObjAccess(Tcl_Obj *pathPtr, int mode);
+#endif
+#ifndef TclpOpenFileChannel_TCL_DECLARED
+#define TclpOpenFileChannel_TCL_DECLARED
+/* 208 */
+EXTERN Tcl_Channel	TclpOpenFileChannel(Tcl_Interp *interp,
+				Tcl_Obj *pathPtr, int mode, int permissions);
+#endif
 /* Slot 209 is reserved */
 /* Slot 210 is reserved */
 /* Slot 211 is reserved */
-/* Slot 212 is reserved */
-/* Slot 213 is reserved */
-/* Slot 214 is reserved */
-/* Slot 215 is reserved */
-/* Slot 216 is reserved */
-/* Slot 217 is reserved */
-/* Slot 218 is reserved */
+#ifndef TclpFindExecutable_TCL_DECLARED
+#define TclpFindExecutable_TCL_DECLARED
+/* 212 */
+EXTERN void		TclpFindExecutable(CONST char *argv0);
+#endif
+#ifndef TclGetObjNameOfExecutable_TCL_DECLARED
+#define TclGetObjNameOfExecutable_TCL_DECLARED
+/* 213 */
+EXTERN Tcl_Obj *	TclGetObjNameOfExecutable(void);
+#endif
+#ifndef TclSetObjNameOfExecutable_TCL_DECLARED
+#define TclSetObjNameOfExecutable_TCL_DECLARED
+/* 214 */
+EXTERN void		TclSetObjNameOfExecutable(Tcl_Obj *name,
+				Tcl_Encoding encoding);
+#endif
+#ifndef TclStackAlloc_TCL_DECLARED
+#define TclStackAlloc_TCL_DECLARED
+/* 215 */
+EXTERN VOID *		TclStackAlloc(Tcl_Interp *interp, int numBytes);
+#endif
+#ifndef TclStackFree_TCL_DECLARED
+#define TclStackFree_TCL_DECLARED
+/* 216 */
+EXTERN void		TclStackFree(Tcl_Interp *interp, VOID *freePtr);
+#endif
+#ifndef TclPushStackFrame_TCL_DECLARED
+#define TclPushStackFrame_TCL_DECLARED
+/* 217 */
+EXTERN int		TclPushStackFrame(Tcl_Interp *interp,
+				Tcl_CallFrame **framePtrPtr,
+				Tcl_Namespace *namespacePtr,
+				int isProcCallFrame);
+#endif
+#ifndef TclPopStackFrame_TCL_DECLARED
+#define TclPopStackFrame_TCL_DECLARED
+/* 218 */
+EXTERN void		TclPopStackFrame(Tcl_Interp *interp);
+#endif
 /* Slot 219 is reserved */
 /* Slot 220 is reserved */
 /* Slot 221 is reserved */
 /* Slot 222 is reserved */
 /* Slot 223 is reserved */
-/* Slot 224 is reserved */
-/* Slot 225 is reserved */
-/* Slot 226 is reserved */
-/* Slot 227 is reserved */
-/* Slot 228 is reserved */
-/* Slot 229 is reserved */
-/* Slot 230 is reserved */
-/* Slot 231 is reserved */
-/* Slot 232 is reserved */
-/* Slot 233 is reserved */
-/* Slot 234 is reserved */
-/* Slot 235 is reserved */
-/* Slot 236 is reserved */
+#ifndef TclGetPlatform_TCL_DECLARED
+#define TclGetPlatform_TCL_DECLARED
+/* 224 */
+EXTERN TclPlatformType * TclGetPlatform(void);
+#endif
+#ifndef TclTraceDictPath_TCL_DECLARED
+#define TclTraceDictPath_TCL_DECLARED
+/* 225 */
+EXTERN Tcl_Obj *	TclTraceDictPath(Tcl_Interp *interp,
+				Tcl_Obj *rootPtr, int keyc,
+				Tcl_Obj *CONST keyv[], int flags);
+#endif
+#ifndef TclObjBeingDeleted_TCL_DECLARED
+#define TclObjBeingDeleted_TCL_DECLARED
+/* 226 */
+EXTERN int		TclObjBeingDeleted(Tcl_Obj *objPtr);
+#endif
+#ifndef TclSetNsPath_TCL_DECLARED
+#define TclSetNsPath_TCL_DECLARED
+/* 227 */
+EXTERN void		TclSetNsPath(Namespace *nsPtr, int pathLength,
+				Tcl_Namespace *pathAry[]);
+#endif
+#ifndef TclObjInterpProcCore_TCL_DECLARED
+#define TclObjInterpProcCore_TCL_DECLARED
+/* 228 */
+EXTERN int		TclObjInterpProcCore(register Tcl_Interp *interp,
+				Tcl_Obj *procNameObj, int skip,
+				ProcErrorProc errorProc);
+#endif
+#ifndef TclPtrMakeUpvar_TCL_DECLARED
+#define TclPtrMakeUpvar_TCL_DECLARED
+/* 229 */
+EXTERN int		TclPtrMakeUpvar(Tcl_Interp *interp, Var *otherP1Ptr,
+				CONST char *myName, int myFlags, int index);
+#endif
+#ifndef TclObjLookupVar_TCL_DECLARED
+#define TclObjLookupVar_TCL_DECLARED
+/* 230 */
+EXTERN Var *		TclObjLookupVar(Tcl_Interp *interp,
+				Tcl_Obj *part1Ptr, CONST char *part2,
+				int flags, CONST char *msg,
+				CONST int createPart1, CONST int createPart2,
+				Var **arrayPtrPtr);
+#endif
+#ifndef TclGetNamespaceFromObj_TCL_DECLARED
+#define TclGetNamespaceFromObj_TCL_DECLARED
+/* 231 */
+EXTERN int		TclGetNamespaceFromObj(Tcl_Interp *interp,
+				Tcl_Obj *objPtr, Tcl_Namespace **nsPtrPtr);
+#endif
+#ifndef TclEvalObjEx_TCL_DECLARED
+#define TclEvalObjEx_TCL_DECLARED
+/* 232 */
+EXTERN int		TclEvalObjEx(Tcl_Interp *interp, Tcl_Obj *objPtr,
+				int flags, CONST CmdFrame *invoker, int word);
+#endif
+#ifndef TclGetSrcInfoForPc_TCL_DECLARED
+#define TclGetSrcInfoForPc_TCL_DECLARED
+/* 233 */
+EXTERN void		TclGetSrcInfoForPc(CmdFrame *contextPtr);
+#endif
+#ifndef TclVarHashCreateVar_TCL_DECLARED
+#define TclVarHashCreateVar_TCL_DECLARED
+/* 234 */
+EXTERN Var *		TclVarHashCreateVar(TclVarHashTable *tablePtr,
+				CONST char *key, int *newPtr);
+#endif
+#ifndef TclInitVarHashTable_TCL_DECLARED
+#define TclInitVarHashTable_TCL_DECLARED
+/* 235 */
+EXTERN void		TclInitVarHashTable(TclVarHashTable *tablePtr,
+				Namespace *nsPtr);
+#endif
+#ifndef TclBackgroundException_TCL_DECLARED
+#define TclBackgroundException_TCL_DECLARED
+/* 236 */
+EXTERN void		TclBackgroundException(Tcl_Interp *interp, int code);
+#endif
 /* Slot 237 is reserved */
 /* Slot 238 is reserved */
 /* Slot 239 is reserved */
 /* Slot 240 is reserved */
 /* Slot 241 is reserved */
 /* Slot 242 is reserved */
-/* Slot 243 is reserved */
+#ifndef TclDbDumpActiveObjects_TCL_DECLARED
+#define TclDbDumpActiveObjects_TCL_DECLARED
+/* 243 */
+EXTERN void		TclDbDumpActiveObjects(FILE *outFile);
+#endif
 /* Slot 244 is reserved */
 /* Slot 245 is reserved */
 /* Slot 246 is reserved */
 /* Slot 247 is reserved */
 /* Slot 248 is reserved */
+#ifndef TclDoubleDigits_TCL_DECLARED
+#define TclDoubleDigits_TCL_DECLARED
 /* 249 */
-EXTERN void		TclUnusedStubEntry _ANSI_ARGS_((void));
+EXTERN char *		TclDoubleDigits(double dv, int ndigits, int flags,
+				int *decpt, int *signum, char **endPtr);
+#endif
 
 typedef struct TclIntStubs {
     int magic;
     struct TclIntStubHooks *hooks;
 
     VOID *reserved0;
-    int (*tclAccessDeleteProc) _ANSI_ARGS_((TclAccessProc_ *proc)); /* 1 */
-    int (*tclAccessInsertProc) _ANSI_ARGS_((TclAccessProc_ *proc)); /* 2 */
-    void (*tclAllocateFreeObjects) _ANSI_ARGS_((void)); /* 3 */
+    VOID *reserved1;
+    VOID *reserved2;
+    void (*tclAllocateFreeObjects) (void); /* 3 */
     VOID *reserved4;
-    int (*tclCleanupChildren) _ANSI_ARGS_((Tcl_Interp *interp, int numPids, Tcl_Pid *pidPtr, Tcl_Channel errorChan)); /* 5 */
-    void (*tclCleanupCommand) _ANSI_ARGS_((Command *cmdPtr)); /* 6 */
-    int (*tclCopyAndCollapse) _ANSI_ARGS_((int count, CONST char *src, char *dst)); /* 7 */
-    int (*tclCopyChannel) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel inChan, Tcl_Channel outChan, int toRead, Tcl_Obj *cmdPtr)); /* 8 */
-    int (*tclCreatePipeline) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST char **argv, Tcl_Pid **pidArrayPtr, TclFile *inPipePtr, TclFile *outPipePtr, TclFile *errFilePtr)); /* 9 */
-    int (*tclCreateProc) _ANSI_ARGS_((Tcl_Interp *interp, Namespace *nsPtr, CONST char *procName, Tcl_Obj *argsPtr, Tcl_Obj *bodyPtr, Proc **procPtrPtr)); /* 10 */
-    void (*tclDeleteCompiledLocalVars) _ANSI_ARGS_((Interp *iPtr, CallFrame *framePtr)); /* 11 */
-    void (*tclDeleteVars) _ANSI_ARGS_((Interp *iPtr, Tcl_HashTable *tablePtr)); /* 12 */
-    int (*tclDoGlob) _ANSI_ARGS_((Tcl_Interp *interp, char *separators, Tcl_DString *headPtr, char *tail, Tcl_GlobTypeData *types)); /* 13 */
-    void (*tclDumpMemoryInfo) _ANSI_ARGS_((FILE *outFile)); /* 14 */
+    int (*tclCleanupChildren) (Tcl_Interp *interp, int numPids, Tcl_Pid *pidPtr, Tcl_Channel errorChan); /* 5 */
+    void (*tclCleanupCommand) (Command *cmdPtr); /* 6 */
+    int (*tclCopyAndCollapse) (int count, CONST char *src, char *dst); /* 7 */
+    int (*tclCopyChannel) (Tcl_Interp *interp, Tcl_Channel inChan, Tcl_Channel outChan, int toRead, Tcl_Obj *cmdPtr); /* 8 */
+    int (*tclCreatePipeline) (Tcl_Interp *interp, int argc, CONST char **argv, Tcl_Pid **pidArrayPtr, TclFile *inPipePtr, TclFile *outPipePtr, TclFile *errFilePtr); /* 9 */
+    int (*tclCreateProc) (Tcl_Interp *interp, Namespace *nsPtr, CONST char *procName, Tcl_Obj *argsPtr, Tcl_Obj *bodyPtr, Proc **procPtrPtr); /* 10 */
+    void (*tclDeleteCompiledLocalVars) (Interp *iPtr, CallFrame *framePtr); /* 11 */
+    void (*tclDeleteVars) (Interp *iPtr, TclVarHashTable *tablePtr); /* 12 */
+    VOID *reserved13;
+    int (*tclDumpMemoryInfo) (ClientData clientData, int flags); /* 14 */
     VOID *reserved15;
-    void (*tclExprFloatError) _ANSI_ARGS_((Tcl_Interp *interp, double value)); /* 16 */
+    void (*tclExprFloatError) (Tcl_Interp *interp, double value); /* 16 */
     VOID *reserved17;
     VOID *reserved18;
     VOID *reserved19;
     VOID *reserved20;
     VOID *reserved21;
-    int (*tclFindElement) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *listStr, int listLength, CONST char **elementPtr, CONST char **nextPtr, int *sizePtr, int *bracePtr)); /* 22 */
-    Proc * (*tclFindProc) _ANSI_ARGS_((Interp *iPtr, CONST char *procName)); /* 23 */
-    int (*tclFormatInt) _ANSI_ARGS_((char *buffer, long n)); /* 24 */
-    void (*tclFreePackageInfo) _ANSI_ARGS_((Interp *iPtr)); /* 25 */
+    int (*tclFindElement) (Tcl_Interp *interp, CONST char *listStr, int listLength, CONST char **elementPtr, CONST char **nextPtr, int *sizePtr, int *bracePtr); /* 22 */
+    Proc * (*tclFindProc) (Interp *iPtr, CONST char *procName); /* 23 */
+    int (*tclFormatInt) (char *buffer, long n); /* 24 */
+    void (*tclFreePackageInfo) (Interp *iPtr); /* 25 */
     VOID *reserved26;
-    int (*tclGetDate) _ANSI_ARGS_((char *p, Tcl_WideInt now, long zone, Tcl_WideInt *timePtr)); /* 27 */
-    Tcl_Channel (*tclpGetDefaultStdChannel) _ANSI_ARGS_((int type)); /* 28 */
+    VOID *reserved27;
+    Tcl_Channel (*tclpGetDefaultStdChannel) (int type); /* 28 */
     VOID *reserved29;
     VOID *reserved30;
-    char * (*tclGetExtension) _ANSI_ARGS_((char *name)); /* 31 */
-    int (*tclGetFrame) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *str, CallFrame **framePtrPtr)); /* 32 */
-    TclCmdProcType (*tclGetInterpProc) _ANSI_ARGS_((void)); /* 33 */
-    int (*tclGetIntForIndex) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, int endValue, int *indexPtr)); /* 34 */
+    CONST char * (*tclGetExtension) (CONST char *name); /* 31 */
+    int (*tclGetFrame) (Tcl_Interp *interp, CONST char *str, CallFrame **framePtrPtr); /* 32 */
+    VOID *reserved33;
+    int (*tclGetIntForIndex) (Tcl_Interp *interp, Tcl_Obj *objPtr, int endValue, int *indexPtr); /* 34 */
     VOID *reserved35;
-    int (*tclGetLong) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *str, long *longPtr)); /* 36 */
-    int (*tclGetLoadedPackages) _ANSI_ARGS_((Tcl_Interp *interp, char *targetName)); /* 37 */
-    int (*tclGetNamespaceForQualName) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *qualName, Namespace *cxtNsPtr, int flags, Namespace **nsPtrPtr, Namespace **altNsPtrPtr, Namespace **actualCxtPtrPtr, CONST char **simpleNamePtr)); /* 38 */
-    TclObjCmdProcType (*tclGetObjInterpProc) _ANSI_ARGS_((void)); /* 39 */
-    int (*tclGetOpenMode) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *str, int *seekFlagPtr)); /* 40 */
-    Tcl_Command (*tclGetOriginalCommand) _ANSI_ARGS_((Tcl_Command command)); /* 41 */
-    char * (*tclpGetUserHome) _ANSI_ARGS_((CONST char *name, Tcl_DString *bufferPtr)); /* 42 */
-    int (*tclGlobalInvoke) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST84 char **argv, int flags)); /* 43 */
-    int (*tclGuessPackageName) _ANSI_ARGS_((CONST char *fileName, Tcl_DString *bufPtr)); /* 44 */
-    int (*tclHideUnsafeCommands) _ANSI_ARGS_((Tcl_Interp *interp)); /* 45 */
-    int (*tclInExit) _ANSI_ARGS_((void)); /* 46 */
+    int (*tclGetLong) (Tcl_Interp *interp, CONST char *str, long *longPtr); /* 36 */
+    int (*tclGetLoadedPackages) (Tcl_Interp *interp, char *targetName); /* 37 */
+    int (*tclGetNamespaceForQualName) (Tcl_Interp *interp, CONST char *qualName, Namespace *cxtNsPtr, int flags, Namespace **nsPtrPtr, Namespace **altNsPtrPtr, Namespace **actualCxtPtrPtr, CONST char **simpleNamePtr); /* 38 */
+    TclObjCmdProcType (*tclGetObjInterpProc) (void); /* 39 */
+    int (*tclGetOpenMode) (Tcl_Interp *interp, CONST char *str, int *seekFlagPtr); /* 40 */
+    Tcl_Command (*tclGetOriginalCommand) (Tcl_Command command); /* 41 */
+    char * (*tclpGetUserHome) (CONST char *name, Tcl_DString *bufferPtr); /* 42 */
+    VOID *reserved43;
+    int (*tclGuessPackageName) (CONST char *fileName, Tcl_DString *bufPtr); /* 44 */
+    int (*tclHideUnsafeCommands) (Tcl_Interp *interp); /* 45 */
+    int (*tclInExit) (void); /* 46 */
     VOID *reserved47;
     VOID *reserved48;
-    Tcl_Obj * (*tclIncrVar2) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, long incrAmount, int part1NotParsed)); /* 49 */
-    void (*tclInitCompiledLocals) _ANSI_ARGS_((Tcl_Interp *interp, CallFrame *framePtr, Namespace *nsPtr)); /* 50 */
-    int (*tclInterpInit) _ANSI_ARGS_((Tcl_Interp *interp)); /* 51 */
-    int (*tclInvoke) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST84 char **argv, int flags)); /* 52 */
-    int (*tclInvokeObjectCommand) _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, int argc, CONST84 char **argv)); /* 53 */
-    int (*tclInvokeStringCommand) _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); /* 54 */
-    Proc * (*tclIsProc) _ANSI_ARGS_((Command *cmdPtr)); /* 55 */
+    VOID *reserved49;
+    void (*tclInitCompiledLocals) (Tcl_Interp *interp, CallFrame *framePtr, Namespace *nsPtr); /* 50 */
+    int (*tclInterpInit) (Tcl_Interp *interp); /* 51 */
+    VOID *reserved52;
+    int (*tclInvokeObjectCommand) (ClientData clientData, Tcl_Interp *interp, int argc, CONST84 char **argv); /* 53 */
+    int (*tclInvokeStringCommand) (ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]); /* 54 */
+    Proc * (*tclIsProc) (Command *cmdPtr); /* 55 */
     VOID *reserved56;
     VOID *reserved57;
-    Var * (*tclLookupVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, CONST char *msg, int createPart1, int createPart2, Var **arrayPtrPtr)); /* 58 */
+    Var * (*tclLookupVar) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, int flags, CONST char *msg, int createPart1, int createPart2, Var **arrayPtrPtr); /* 58 */
     VOID *reserved59;
-    int (*tclNeedSpace) _ANSI_ARGS_((CONST char *start, CONST char *end)); /* 60 */
-    Tcl_Obj * (*tclNewProcBodyObj) _ANSI_ARGS_((Proc *procPtr)); /* 61 */
-    int (*tclObjCommandComplete) _ANSI_ARGS_((Tcl_Obj *cmdPtr)); /* 62 */
-    int (*tclObjInterpProc) _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); /* 63 */
-    int (*tclObjInvoke) _ANSI_ARGS_((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags)); /* 64 */
-    int (*tclObjInvokeGlobal) _ANSI_ARGS_((Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags)); /* 65 */
-    int (*tclOpenFileChannelDeleteProc) _ANSI_ARGS_((TclOpenFileChannelProc_ *proc)); /* 66 */
-    int (*tclOpenFileChannelInsertProc) _ANSI_ARGS_((TclOpenFileChannelProc_ *proc)); /* 67 */
+    int (*tclNeedSpace) (CONST char *start, CONST char *end); /* 60 */
+    Tcl_Obj * (*tclNewProcBodyObj) (Proc *procPtr); /* 61 */
+    int (*tclObjCommandComplete) (Tcl_Obj *cmdPtr); /* 62 */
+    int (*tclObjInterpProc) (ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]); /* 63 */
+    int (*tclObjInvoke) (Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[], int flags); /* 64 */
+    VOID *reserved65;
+    VOID *reserved66;
+    VOID *reserved67;
     VOID *reserved68;
-    char * (*tclpAlloc) _ANSI_ARGS_((unsigned int size)); /* 69 */
+    char * (*tclpAlloc) (unsigned int size); /* 69 */
     VOID *reserved70;
     VOID *reserved71;
     VOID *reserved72;
     VOID *reserved73;
-    void (*tclpFree) _ANSI_ARGS_((char *ptr)); /* 74 */
-    unsigned long (*tclpGetClicks) _ANSI_ARGS_((void)); /* 75 */
-    unsigned long (*tclpGetSeconds) _ANSI_ARGS_((void)); /* 76 */
-    void (*tclpGetTime) _ANSI_ARGS_((Tcl_Time *time)); /* 77 */
-    int (*tclpGetTimeZone) _ANSI_ARGS_((Tcl_WideInt time)); /* 78 */
+    void (*tclpFree) (char *ptr); /* 74 */
+    unsigned long (*tclpGetClicks) (void); /* 75 */
+    unsigned long (*tclpGetSeconds) (void); /* 76 */
+    void (*tclpGetTime) (Tcl_Time *time); /* 77 */
+    int (*tclpGetTimeZone) (unsigned long time); /* 78 */
     VOID *reserved79;
     VOID *reserved80;
-    char * (*tclpRealloc) _ANSI_ARGS_((char *ptr, unsigned int size)); /* 81 */
+    char * (*tclpRealloc) (char *ptr, unsigned int size); /* 81 */
     VOID *reserved82;
     VOID *reserved83;
     VOID *reserved84;
     VOID *reserved85;
     VOID *reserved86;
     VOID *reserved87;
-    char * (*tclPrecTraceProc) _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, CONST char *name1, CONST char *name2, int flags)); /* 88 */
-    int (*tclPreventAliasLoop) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Interp *cmdInterp, Tcl_Command cmd)); /* 89 */
+    char * (*tclPrecTraceProc) (ClientData clientData, Tcl_Interp *interp, CONST char *name1, CONST char *name2, int flags); /* 88 */
+    int (*tclPreventAliasLoop) (Tcl_Interp *interp, Tcl_Interp *cmdInterp, Tcl_Command cmd); /* 89 */
     VOID *reserved90;
-    void (*tclProcCleanupProc) _ANSI_ARGS_((Proc *procPtr)); /* 91 */
-    int (*tclProcCompileProc) _ANSI_ARGS_((Tcl_Interp *interp, Proc *procPtr, Tcl_Obj *bodyPtr, Namespace *nsPtr, CONST char *description, CONST char *procName)); /* 92 */
-    void (*tclProcDeleteProc) _ANSI_ARGS_((ClientData clientData)); /* 93 */
-    int (*tclProcInterpProc) _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, int argc, CONST84 char **argv)); /* 94 */
+    void (*tclProcCleanupProc) (Proc *procPtr); /* 91 */
+    int (*tclProcCompileProc) (Tcl_Interp *interp, Proc *procPtr, Tcl_Obj *bodyPtr, Namespace *nsPtr, CONST char *description, CONST char *procName); /* 92 */
+    void (*tclProcDeleteProc) (ClientData clientData); /* 93 */
+    VOID *reserved94;
     VOID *reserved95;
-    int (*tclRenameCommand) _ANSI_ARGS_((Tcl_Interp *interp, char *oldName, char *newName)); /* 96 */
-    void (*tclResetShadowedCmdRefs) _ANSI_ARGS_((Tcl_Interp *interp, Command *newCmdPtr)); /* 97 */
-    int (*tclServiceIdle) _ANSI_ARGS_((void)); /* 98 */
+    int (*tclRenameCommand) (Tcl_Interp *interp, CONST char *oldName, CONST char *newName); /* 96 */
+    void (*tclResetShadowedCmdRefs) (Tcl_Interp *interp, Command *newCmdPtr); /* 97 */
+    int (*tclServiceIdle) (void); /* 98 */
     VOID *reserved99;
     VOID *reserved100;
-    char * (*tclSetPreInitScript) _ANSI_ARGS_((char *string)); /* 101 */
-    void (*tclSetupEnv) _ANSI_ARGS_((Tcl_Interp *interp)); /* 102 */
-    int (*tclSockGetPort) _ANSI_ARGS_((Tcl_Interp *interp, char *str, char *proto, int *portPtr)); /* 103 */
-    int (*tclSockMinimumBuffersOld) _ANSI_ARGS_((int sock, int size)); /* 104 */
+    char * (*tclSetPreInitScript) (char *string); /* 101 */
+    void (*tclSetupEnv) (Tcl_Interp *interp); /* 102 */
+    int (*tclSockGetPort) (Tcl_Interp *interp, CONST char *str, CONST char *proto, int *portPtr); /* 103 */
+    int (*tclSockMinimumBuffersOld) (int sock, int size); /* 104 */
     VOID *reserved105;
-    int (*tclStatDeleteProc) _ANSI_ARGS_((TclStatProc_ *proc)); /* 106 */
-    int (*tclStatInsertProc) _ANSI_ARGS_((TclStatProc_ *proc)); /* 107 */
-    void (*tclTeardownNamespace) _ANSI_ARGS_((Namespace *nsPtr)); /* 108 */
-    int (*tclUpdateReturnInfo) _ANSI_ARGS_((Interp *iPtr)); /* 109 */
-    int (*tclSockMinimumBuffers) _ANSI_ARGS_((VOID *sock, int size)); /* 110 */
-    void (*tcl_AddInterpResolvers) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc, Tcl_ResolveCompiledVarProc *compiledVarProc)); /* 111 */
-    int (*tcl_AppendExportList) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *objPtr)); /* 112 */
-    Tcl_Namespace * (*tcl_CreateNamespace) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, ClientData clientData, Tcl_NamespaceDeleteProc *deleteProc)); /* 113 */
-    void (*tcl_DeleteNamespace) _ANSI_ARGS_((Tcl_Namespace *nsPtr)); /* 114 */
-    int (*tcl_Export) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern, int resetListFirst)); /* 115 */
-    Tcl_Command (*tcl_FindCommand) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags)); /* 116 */
-    Tcl_Namespace * (*tcl_FindNamespace) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags)); /* 117 */
-    int (*tcl_GetInterpResolvers) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_ResolverInfo *resInfo)); /* 118 */
-    int (*tcl_GetNamespaceResolvers) _ANSI_ARGS_((Tcl_Namespace *namespacePtr, Tcl_ResolverInfo *resInfo)); /* 119 */
-    Tcl_Var (*tcl_FindNamespaceVar) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags)); /* 120 */
-    int (*tcl_ForgetImport) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern)); /* 121 */
-    Tcl_Command (*tcl_GetCommandFromObj) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr)); /* 122 */
-    void (*tcl_GetCommandFullName) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Command command, Tcl_Obj *objPtr)); /* 123 */
-    Tcl_Namespace * (*tcl_GetCurrentNamespace) _ANSI_ARGS_((Tcl_Interp *interp)); /* 124 */
-    Tcl_Namespace * (*tcl_GetGlobalNamespace) _ANSI_ARGS_((Tcl_Interp *interp)); /* 125 */
-    void (*tcl_GetVariableFullName) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Var variable, Tcl_Obj *objPtr)); /* 126 */
-    int (*tcl_Import) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern, int allowOverwrite)); /* 127 */
-    void (*tcl_PopCallFrame) _ANSI_ARGS_((Tcl_Interp *interp)); /* 128 */
-    int (*tcl_PushCallFrame) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_CallFrame *framePtr, Tcl_Namespace *nsPtr, int isProcCallFrame)); /* 129 */
-    int (*tcl_RemoveInterpResolvers) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *name)); /* 130 */
-    void (*tcl_SetNamespaceResolvers) _ANSI_ARGS_((Tcl_Namespace *namespacePtr, Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc, Tcl_ResolveCompiledVarProc *compiledVarProc)); /* 131 */
-    int (*tclpHasSockets) _ANSI_ARGS_((Tcl_Interp *interp)); /* 132 */
-    struct tm * (*tclpGetDate) _ANSI_ARGS_((TclpTime_t time, int useGMT)); /* 133 */
-    size_t (*tclpStrftime) _ANSI_ARGS_((char *s, size_t maxsize, CONST char *format, CONST struct tm *t, int useGMT)); /* 134 */
-    int (*tclpCheckStackSpace) _ANSI_ARGS_((void)); /* 135 */
+    VOID *reserved106;
+    VOID *reserved107;
+    void (*tclTeardownNamespace) (Namespace *nsPtr); /* 108 */
+    int (*tclUpdateReturnInfo) (Interp *iPtr); /* 109 */
+    int (*tclSockMinimumBuffers) (VOID *sock, int size); /* 110 */
+    void (*tcl_AddInterpResolvers) (Tcl_Interp *interp, CONST char *name, Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc, Tcl_ResolveCompiledVarProc *compiledVarProc); /* 111 */
+    int (*tcl_AppendExportList) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *objPtr); /* 112 */
+    Tcl_Namespace * (*tcl_CreateNamespace) (Tcl_Interp *interp, CONST char *name, ClientData clientData, Tcl_NamespaceDeleteProc *deleteProc); /* 113 */
+    void (*tcl_DeleteNamespace) (Tcl_Namespace *nsPtr); /* 114 */
+    int (*tcl_Export) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern, int resetListFirst); /* 115 */
+    Tcl_Command (*tcl_FindCommand) (Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags); /* 116 */
+    Tcl_Namespace * (*tcl_FindNamespace) (Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags); /* 117 */
+    int (*tcl_GetInterpResolvers) (Tcl_Interp *interp, CONST char *name, Tcl_ResolverInfo *resInfo); /* 118 */
+    int (*tcl_GetNamespaceResolvers) (Tcl_Namespace *namespacePtr, Tcl_ResolverInfo *resInfo); /* 119 */
+    Tcl_Var (*tcl_FindNamespaceVar) (Tcl_Interp *interp, CONST char *name, Tcl_Namespace *contextNsPtr, int flags); /* 120 */
+    int (*tcl_ForgetImport) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern); /* 121 */
+    Tcl_Command (*tcl_GetCommandFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 122 */
+    void (*tcl_GetCommandFullName) (Tcl_Interp *interp, Tcl_Command command, Tcl_Obj *objPtr); /* 123 */
+    Tcl_Namespace * (*tcl_GetCurrentNamespace) (Tcl_Interp *interp); /* 124 */
+    Tcl_Namespace * (*tcl_GetGlobalNamespace) (Tcl_Interp *interp); /* 125 */
+    void (*tcl_GetVariableFullName) (Tcl_Interp *interp, Tcl_Var variable, Tcl_Obj *objPtr); /* 126 */
+    int (*tcl_Import) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, CONST char *pattern, int allowOverwrite); /* 127 */
+    void (*tcl_PopCallFrame) (Tcl_Interp *interp); /* 128 */
+    int (*tcl_PushCallFrame) (Tcl_Interp *interp, Tcl_CallFrame *framePtr, Tcl_Namespace *nsPtr, int isProcCallFrame); /* 129 */
+    int (*tcl_RemoveInterpResolvers) (Tcl_Interp *interp, CONST char *name); /* 130 */
+    void (*tcl_SetNamespaceResolvers) (Tcl_Namespace *namespacePtr, Tcl_ResolveCmdProc *cmdProc, Tcl_ResolveVarProc *varProc, Tcl_ResolveCompiledVarProc *compiledVarProc); /* 131 */
+    int (*tclpHasSockets) (Tcl_Interp *interp); /* 132 */
+    struct tm * (*tclpGetDate) (CONST time_t *time, int useGMT); /* 133 */
+    VOID *reserved134;
+    VOID *reserved135;
     VOID *reserved136;
     VOID *reserved137;
-    CONST84_RETURN char * (*tclGetEnv) _ANSI_ARGS_((CONST char *name, Tcl_DString *valuePtr)); /* 138 */
+    CONST84_RETURN char * (*tclGetEnv) (CONST char *name, Tcl_DString *valuePtr); /* 138 */
     VOID *reserved139;
-    int (*tclLooksLikeInt) _ANSI_ARGS_((CONST char *bytes, int length)); /* 140 */
-    CONST84_RETURN char * (*tclpGetCwd) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_DString *cwdPtr)); /* 141 */
-    int (*tclSetByteCodeFromAny) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *objPtr, CompileHookProc *hookProc, ClientData clientData)); /* 142 */
-    int (*tclAddLiteralObj) _ANSI_ARGS_((struct CompileEnv *envPtr, Tcl_Obj *objPtr, LiteralEntry **litPtrPtr)); /* 143 */
-    void (*tclHideLiteral) _ANSI_ARGS_((Tcl_Interp *interp, struct CompileEnv *envPtr, int index)); /* 144 */
-    struct AuxDataType * (*tclGetAuxDataType) _ANSI_ARGS_((char *typeName)); /* 145 */
-    TclHandle (*tclHandleCreate) _ANSI_ARGS_((VOID *ptr)); /* 146 */
-    void (*tclHandleFree) _ANSI_ARGS_((TclHandle handle)); /* 147 */
-    TclHandle (*tclHandlePreserve) _ANSI_ARGS_((TclHandle handle)); /* 148 */
-    void (*tclHandleRelease) _ANSI_ARGS_((TclHandle handle)); /* 149 */
-    int (*tclRegAbout) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_RegExp re)); /* 150 */
-    void (*tclRegExpRangeUniChar) _ANSI_ARGS_((Tcl_RegExp re, int index, int *startPtr, int *endPtr)); /* 151 */
-    void (*tclSetLibraryPath) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 152 */
-    Tcl_Obj * (*tclGetLibraryPath) _ANSI_ARGS_((void)); /* 153 */
+    VOID *reserved140;
+    CONST84_RETURN char * (*tclpGetCwd) (Tcl_Interp *interp, Tcl_DString *cwdPtr); /* 141 */
+    int (*tclSetByteCodeFromAny) (Tcl_Interp *interp, Tcl_Obj *objPtr, CompileHookProc *hookProc, ClientData clientData); /* 142 */
+    int (*tclAddLiteralObj) (struct CompileEnv *envPtr, Tcl_Obj *objPtr, LiteralEntry **litPtrPtr); /* 143 */
+    void (*tclHideLiteral) (Tcl_Interp *interp, struct CompileEnv *envPtr, int index); /* 144 */
+    struct AuxDataType * (*tclGetAuxDataType) (char *typeName); /* 145 */
+    TclHandle (*tclHandleCreate) (VOID *ptr); /* 146 */
+    void (*tclHandleFree) (TclHandle handle); /* 147 */
+    TclHandle (*tclHandlePreserve) (TclHandle handle); /* 148 */
+    void (*tclHandleRelease) (TclHandle handle); /* 149 */
+    int (*tclRegAbout) (Tcl_Interp *interp, Tcl_RegExp re); /* 150 */
+    void (*tclRegExpRangeUniChar) (Tcl_RegExp re, int index, int *startPtr, int *endPtr); /* 151 */
+    void (*tclSetLibraryPath) (Tcl_Obj *pathPtr); /* 152 */
+    Tcl_Obj * (*tclGetLibraryPath) (void); /* 153 */
     VOID *reserved154;
     VOID *reserved155;
-    void (*tclRegError) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *msg, int status)); /* 156 */
-    Var * (*tclVarTraceExists) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *varName)); /* 157 */
-    void (*tclSetStartupScriptFileName) _ANSI_ARGS_((CONST char *filename)); /* 158 */
-    CONST84_RETURN char * (*tclGetStartupScriptFileName) _ANSI_ARGS_((void)); /* 159 */
+    void (*tclRegError) (Tcl_Interp *interp, CONST char *msg, int status); /* 156 */
+    Var * (*tclVarTraceExists) (Tcl_Interp *interp, CONST char *varName); /* 157 */
+    void (*tclSetStartupScriptFileName) (CONST char *filename); /* 158 */
+    CONST84_RETURN char * (*tclGetStartupScriptFileName) (void); /* 159 */
     VOID *reserved160;
-    int (*tclChannelTransform) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan, Tcl_Obj *cmdObjPtr)); /* 161 */
-    void (*tclChannelEventScriptInvoker) _ANSI_ARGS_((ClientData clientData, int flags)); /* 162 */
-    VOID * (*tclGetInstructionTable) _ANSI_ARGS_((void)); /* 163 */
-    void (*tclExpandCodeArray) _ANSI_ARGS_((VOID *envPtr)); /* 164 */
-    void (*tclpSetInitialEncodings) _ANSI_ARGS_((void)); /* 165 */
-    int (*tclListObjSetElement) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Obj *listPtr, int index, Tcl_Obj *valuePtr)); /* 166 */
-    void (*tclSetStartupScriptPath) _ANSI_ARGS_((Tcl_Obj *pathPtr)); /* 167 */
-    Tcl_Obj * (*tclGetStartupScriptPath) _ANSI_ARGS_((void)); /* 168 */
-    int (*tclpUtfNcmp2) _ANSI_ARGS_((CONST char *s1, CONST char *s2, unsigned long n)); /* 169 */
-    int (*tclCheckInterpTraces) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *command, int numChars, Command *cmdPtr, int result, int traceFlags, int objc, Tcl_Obj *CONST objv[])); /* 170 */
-    int (*tclCheckExecutionTraces) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *command, int numChars, Command *cmdPtr, int result, int traceFlags, int objc, Tcl_Obj *CONST objv[])); /* 171 */
-    int (*tclInThreadExit) _ANSI_ARGS_((void)); /* 172 */
-    int (*tclUniCharMatch) _ANSI_ARGS_((CONST Tcl_UniChar *string, int strLen, CONST Tcl_UniChar *pattern, int ptnLen, int nocase)); /* 173 */
+    int (*tclChannelTransform) (Tcl_Interp *interp, Tcl_Channel chan, Tcl_Obj *cmdObjPtr); /* 161 */
+    void (*tclChannelEventScriptInvoker) (ClientData clientData, int flags); /* 162 */
+    VOID * (*tclGetInstructionTable) (void); /* 163 */
+    void (*tclExpandCodeArray) (VOID *envPtr); /* 164 */
+    void (*tclpSetInitialEncodings) (void); /* 165 */
+    int (*tclListObjSetElement) (Tcl_Interp *interp, Tcl_Obj *listPtr, int index, Tcl_Obj *valuePtr); /* 166 */
+    void (*tclSetStartupScriptPath) (Tcl_Obj *pathPtr); /* 167 */
+    Tcl_Obj * (*tclGetStartupScriptPath) (void); /* 168 */
+    int (*tclpUtfNcmp2) (CONST char *s1, CONST char *s2, unsigned long n); /* 169 */
+    int (*tclCheckInterpTraces) (Tcl_Interp *interp, CONST char *command, int numChars, Command *cmdPtr, int result, int traceFlags, int objc, Tcl_Obj *CONST objv[]); /* 170 */
+    int (*tclCheckExecutionTraces) (Tcl_Interp *interp, CONST char *command, int numChars, Command *cmdPtr, int result, int traceFlags, int objc, Tcl_Obj *CONST objv[]); /* 171 */
+    int (*tclInThreadExit) (void); /* 172 */
+    int (*tclUniCharMatch) (CONST Tcl_UniChar *string, int strLen, CONST Tcl_UniChar *pattern, int ptnLen, int flags); /* 173 */
     VOID *reserved174;
-    VOID *reserved175;
-    VOID *reserved176;
-    VOID *reserved177;
-    VOID *reserved178;
-    VOID *reserved179;
+    int (*tclCallVarTraces) (Interp *iPtr, Var *arrayPtr, Var *varPtr, CONST char *part1, CONST char *part2, int flags, int leaveErrMsg); /* 175 */
+    void (*tclCleanupVar) (Var *varPtr, Var *arrayPtr); /* 176 */
+    void (*tclVarErrMsg) (Tcl_Interp *interp, CONST char *part1, CONST char *part2, CONST char *operation, CONST char *reason); /* 177 */
+    void (*tcl_SetStartupScript) (Tcl_Obj *pathPtr, CONST char *encodingName); /* 178 */
+    Tcl_Obj * (*tcl_GetStartupScript) (CONST char **encodingNamePtr); /* 179 */
     VOID *reserved180;
     VOID *reserved181;
-    struct tm * (*tclpLocaltime) _ANSI_ARGS_((TclpTime_t_CONST clock)); /* 182 */
-    struct tm * (*tclpGmtime) _ANSI_ARGS_((TclpTime_t_CONST clock)); /* 183 */
+    struct tm * (*tclpLocaltime) (CONST time_t *clock); /* 182 */
+    struct tm * (*tclpGmtime) (CONST time_t *clock); /* 183 */
     VOID *reserved184;
     VOID *reserved185;
     VOID *reserved186;
@@ -759,58 +1255,58 @@ typedef struct TclIntStubs {
     VOID *reserved195;
     VOID *reserved196;
     VOID *reserved197;
-    VOID *reserved198;
-    int (*tclMatchIsTrivial) _ANSI_ARGS_((CONST char *pattern)); /* 199 */
-    VOID *reserved200;
-    VOID *reserved201;
-    VOID *reserved202;
-    VOID *reserved203;
-    VOID *reserved204;
-    VOID *reserved205;
-    VOID *reserved206;
-    VOID *reserved207;
-    VOID *reserved208;
+    int (*tclObjGetFrame) (Tcl_Interp *interp, Tcl_Obj *objPtr, CallFrame **framePtrPtr); /* 198 */
+    VOID *reserved199;
+    int (*tclpObjRemoveDirectory) (Tcl_Obj *pathPtr, int recursive, Tcl_Obj **errorPtr); /* 200 */
+    int (*tclpObjCopyDirectory) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr); /* 201 */
+    int (*tclpObjCreateDirectory) (Tcl_Obj *pathPtr); /* 202 */
+    int (*tclpObjDeleteFile) (Tcl_Obj *pathPtr); /* 203 */
+    int (*tclpObjCopyFile) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr); /* 204 */
+    int (*tclpObjRenameFile) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr); /* 205 */
+    int (*tclpObjStat) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf); /* 206 */
+    int (*tclpObjAccess) (Tcl_Obj *pathPtr, int mode); /* 207 */
+    Tcl_Channel (*tclpOpenFileChannel) (Tcl_Interp *interp, Tcl_Obj *pathPtr, int mode, int permissions); /* 208 */
     VOID *reserved209;
     VOID *reserved210;
     VOID *reserved211;
-    VOID *reserved212;
-    VOID *reserved213;
-    VOID *reserved214;
-    VOID *reserved215;
-    VOID *reserved216;
-    VOID *reserved217;
-    VOID *reserved218;
+    void (*tclpFindExecutable) (CONST char *argv0); /* 212 */
+    Tcl_Obj * (*tclGetObjNameOfExecutable) (void); /* 213 */
+    void (*tclSetObjNameOfExecutable) (Tcl_Obj *name, Tcl_Encoding encoding); /* 214 */
+    VOID * (*tclStackAlloc) (Tcl_Interp *interp, int numBytes); /* 215 */
+    void (*tclStackFree) (Tcl_Interp *interp, VOID *freePtr); /* 216 */
+    int (*tclPushStackFrame) (Tcl_Interp *interp, Tcl_CallFrame **framePtrPtr, Tcl_Namespace *namespacePtr, int isProcCallFrame); /* 217 */
+    void (*tclPopStackFrame) (Tcl_Interp *interp); /* 218 */
     VOID *reserved219;
     VOID *reserved220;
     VOID *reserved221;
     VOID *reserved222;
     VOID *reserved223;
-    VOID *reserved224;
-    VOID *reserved225;
-    VOID *reserved226;
-    VOID *reserved227;
-    VOID *reserved228;
-    VOID *reserved229;
-    VOID *reserved230;
-    VOID *reserved231;
-    VOID *reserved232;
-    VOID *reserved233;
-    VOID *reserved234;
-    VOID *reserved235;
-    VOID *reserved236;
+    TclPlatformType * (*tclGetPlatform) (void); /* 224 */
+    Tcl_Obj * (*tclTraceDictPath) (Tcl_Interp *interp, Tcl_Obj *rootPtr, int keyc, Tcl_Obj *CONST keyv[], int flags); /* 225 */
+    int (*tclObjBeingDeleted) (Tcl_Obj *objPtr); /* 226 */
+    void (*tclSetNsPath) (Namespace *nsPtr, int pathLength, Tcl_Namespace *pathAry[]); /* 227 */
+    int (*tclObjInterpProcCore) (register Tcl_Interp *interp, Tcl_Obj *procNameObj, int skip, ProcErrorProc errorProc); /* 228 */
+    int (*tclPtrMakeUpvar) (Tcl_Interp *interp, Var *otherP1Ptr, CONST char *myName, int myFlags, int index); /* 229 */
+    Var * (*tclObjLookupVar) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, CONST char *part2, int flags, CONST char *msg, CONST int createPart1, CONST int createPart2, Var **arrayPtrPtr); /* 230 */
+    int (*tclGetNamespaceFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Namespace **nsPtrPtr); /* 231 */
+    int (*tclEvalObjEx) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags, CONST CmdFrame *invoker, int word); /* 232 */
+    void (*tclGetSrcInfoForPc) (CmdFrame *contextPtr); /* 233 */
+    Var * (*tclVarHashCreateVar) (TclVarHashTable *tablePtr, CONST char *key, int *newPtr); /* 234 */
+    void (*tclInitVarHashTable) (TclVarHashTable *tablePtr, Namespace *nsPtr); /* 235 */
+    void (*tclBackgroundException) (Tcl_Interp *interp, int code); /* 236 */
     VOID *reserved237;
     VOID *reserved238;
     VOID *reserved239;
     VOID *reserved240;
     VOID *reserved241;
     VOID *reserved242;
-    VOID *reserved243;
+    void (*tclDbDumpActiveObjects) (FILE *outFile); /* 243 */
     VOID *reserved244;
     VOID *reserved245;
     VOID *reserved246;
     VOID *reserved247;
     VOID *reserved248;
-    void (*tclUnusedStubEntry) _ANSI_ARGS_((void)); /* 249 */
+    char * (*tclDoubleDigits) (double dv, int ndigits, int flags, int *decpt, int *signum, char **endPtr); /* 249 */
 } TclIntStubs;
 
 #ifdef __cplusplus
@@ -828,14 +1324,8 @@ extern TclIntStubs *tclIntStubsPtr;
  */
 
 /* Slot 0 is reserved */
-#ifndef TclAccessDeleteProc
-#define TclAccessDeleteProc \
-	(tclIntStubsPtr->tclAccessDeleteProc) /* 1 */
-#endif
-#ifndef TclAccessInsertProc
-#define TclAccessInsertProc \
-	(tclIntStubsPtr->tclAccessInsertProc) /* 2 */
-#endif
+/* Slot 1 is reserved */
+/* Slot 2 is reserved */
 #ifndef TclAllocateFreeObjects
 #define TclAllocateFreeObjects \
 	(tclIntStubsPtr->tclAllocateFreeObjects) /* 3 */
@@ -873,10 +1363,7 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclDeleteVars \
 	(tclIntStubsPtr->tclDeleteVars) /* 12 */
 #endif
-#ifndef TclDoGlob
-#define TclDoGlob \
-	(tclIntStubsPtr->tclDoGlob) /* 13 */
-#endif
+/* Slot 13 is reserved */
 #ifndef TclDumpMemoryInfo
 #define TclDumpMemoryInfo \
 	(tclIntStubsPtr->tclDumpMemoryInfo) /* 14 */
@@ -908,10 +1395,7 @@ extern TclIntStubs *tclIntStubsPtr;
 	(tclIntStubsPtr->tclFreePackageInfo) /* 25 */
 #endif
 /* Slot 26 is reserved */
-#ifndef TclGetDate
-#define TclGetDate \
-	(tclIntStubsPtr->tclGetDate) /* 27 */
-#endif
+/* Slot 27 is reserved */
 #ifndef TclpGetDefaultStdChannel
 #define TclpGetDefaultStdChannel \
 	(tclIntStubsPtr->tclpGetDefaultStdChannel) /* 28 */
@@ -926,10 +1410,7 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclGetFrame \
 	(tclIntStubsPtr->tclGetFrame) /* 32 */
 #endif
-#ifndef TclGetInterpProc
-#define TclGetInterpProc \
-	(tclIntStubsPtr->tclGetInterpProc) /* 33 */
-#endif
+/* Slot 33 is reserved */
 #ifndef TclGetIntForIndex
 #define TclGetIntForIndex \
 	(tclIntStubsPtr->tclGetIntForIndex) /* 34 */
@@ -963,10 +1444,7 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclpGetUserHome \
 	(tclIntStubsPtr->tclpGetUserHome) /* 42 */
 #endif
-#ifndef TclGlobalInvoke
-#define TclGlobalInvoke \
-	(tclIntStubsPtr->tclGlobalInvoke) /* 43 */
-#endif
+/* Slot 43 is reserved */
 #ifndef TclGuessPackageName
 #define TclGuessPackageName \
 	(tclIntStubsPtr->tclGuessPackageName) /* 44 */
@@ -981,10 +1459,7 @@ extern TclIntStubs *tclIntStubsPtr;
 #endif
 /* Slot 47 is reserved */
 /* Slot 48 is reserved */
-#ifndef TclIncrVar2
-#define TclIncrVar2 \
-	(tclIntStubsPtr->tclIncrVar2) /* 49 */
-#endif
+/* Slot 49 is reserved */
 #ifndef TclInitCompiledLocals
 #define TclInitCompiledLocals \
 	(tclIntStubsPtr->tclInitCompiledLocals) /* 50 */
@@ -993,10 +1468,7 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclInterpInit \
 	(tclIntStubsPtr->tclInterpInit) /* 51 */
 #endif
-#ifndef TclInvoke
-#define TclInvoke \
-	(tclIntStubsPtr->tclInvoke) /* 52 */
-#endif
+/* Slot 52 is reserved */
 #ifndef TclInvokeObjectCommand
 #define TclInvokeObjectCommand \
 	(tclIntStubsPtr->tclInvokeObjectCommand) /* 53 */
@@ -1036,18 +1508,9 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclObjInvoke \
 	(tclIntStubsPtr->tclObjInvoke) /* 64 */
 #endif
-#ifndef TclObjInvokeGlobal
-#define TclObjInvokeGlobal \
-	(tclIntStubsPtr->tclObjInvokeGlobal) /* 65 */
-#endif
-#ifndef TclOpenFileChannelDeleteProc
-#define TclOpenFileChannelDeleteProc \
-	(tclIntStubsPtr->tclOpenFileChannelDeleteProc) /* 66 */
-#endif
-#ifndef TclOpenFileChannelInsertProc
-#define TclOpenFileChannelInsertProc \
-	(tclIntStubsPtr->tclOpenFileChannelInsertProc) /* 67 */
-#endif
+/* Slot 65 is reserved */
+/* Slot 66 is reserved */
+/* Slot 67 is reserved */
 /* Slot 68 is reserved */
 #ifndef TclpAlloc
 #define TclpAlloc \
@@ -1110,10 +1573,7 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclProcDeleteProc \
 	(tclIntStubsPtr->tclProcDeleteProc) /* 93 */
 #endif
-#ifndef TclProcInterpProc
-#define TclProcInterpProc \
-	(tclIntStubsPtr->tclProcInterpProc) /* 94 */
-#endif
+/* Slot 94 is reserved */
 /* Slot 95 is reserved */
 #ifndef TclRenameCommand
 #define TclRenameCommand \
@@ -1146,14 +1606,8 @@ extern TclIntStubs *tclIntStubsPtr;
 	(tclIntStubsPtr->tclSockMinimumBuffersOld) /* 104 */
 #endif
 /* Slot 105 is reserved */
-#ifndef TclStatDeleteProc
-#define TclStatDeleteProc \
-	(tclIntStubsPtr->tclStatDeleteProc) /* 106 */
-#endif
-#ifndef TclStatInsertProc
-#define TclStatInsertProc \
-	(tclIntStubsPtr->tclStatInsertProc) /* 107 */
-#endif
+/* Slot 106 is reserved */
+/* Slot 107 is reserved */
 #ifndef TclTeardownNamespace
 #define TclTeardownNamespace \
 	(tclIntStubsPtr->tclTeardownNamespace) /* 108 */
@@ -1258,14 +1712,8 @@ extern TclIntStubs *tclIntStubsPtr;
 #define TclpGetDate \
 	(tclIntStubsPtr->tclpGetDate) /* 133 */
 #endif
-#ifndef TclpStrftime
-#define TclpStrftime \
-	(tclIntStubsPtr->tclpStrftime) /* 134 */
-#endif
-#ifndef TclpCheckStackSpace
-#define TclpCheckStackSpace \
-	(tclIntStubsPtr->tclpCheckStackSpace) /* 135 */
-#endif
+/* Slot 134 is reserved */
+/* Slot 135 is reserved */
 /* Slot 136 is reserved */
 /* Slot 137 is reserved */
 #ifndef TclGetEnv
@@ -1273,10 +1721,7 @@ extern TclIntStubs *tclIntStubsPtr;
 	(tclIntStubsPtr->tclGetEnv) /* 138 */
 #endif
 /* Slot 139 is reserved */
-#ifndef TclLooksLikeInt
-#define TclLooksLikeInt \
-	(tclIntStubsPtr->tclLooksLikeInt) /* 140 */
-#endif
+/* Slot 140 is reserved */
 #ifndef TclpGetCwd
 #define TclpGetCwd \
 	(tclIntStubsPtr->tclpGetCwd) /* 141 */
@@ -1401,11 +1846,26 @@ extern TclIntStubs *tclIntStubsPtr;
 	(tclIntStubsPtr->tclUniCharMatch) /* 173 */
 #endif
 /* Slot 174 is reserved */
-/* Slot 175 is reserved */
-/* Slot 176 is reserved */
-/* Slot 177 is reserved */
-/* Slot 178 is reserved */
-/* Slot 179 is reserved */
+#ifndef TclCallVarTraces
+#define TclCallVarTraces \
+	(tclIntStubsPtr->tclCallVarTraces) /* 175 */
+#endif
+#ifndef TclCleanupVar
+#define TclCleanupVar \
+	(tclIntStubsPtr->tclCleanupVar) /* 176 */
+#endif
+#ifndef TclVarErrMsg
+#define TclVarErrMsg \
+	(tclIntStubsPtr->tclVarErrMsg) /* 177 */
+#endif
+#ifndef Tcl_SetStartupScript
+#define Tcl_SetStartupScript \
+	(tclIntStubsPtr->tcl_SetStartupScript) /* 178 */
+#endif
+#ifndef Tcl_GetStartupScript
+#define Tcl_GetStartupScript \
+	(tclIntStubsPtr->tcl_GetStartupScript) /* 179 */
+#endif
 /* Slot 180 is reserved */
 /* Slot 181 is reserved */
 #ifndef TclpLocaltime
@@ -1430,63 +1890,153 @@ extern TclIntStubs *tclIntStubsPtr;
 /* Slot 195 is reserved */
 /* Slot 196 is reserved */
 /* Slot 197 is reserved */
-/* Slot 198 is reserved */
-#ifndef TclMatchIsTrivial
-#define TclMatchIsTrivial \
-	(tclIntStubsPtr->tclMatchIsTrivial) /* 199 */
-#endif
-/* Slot 200 is reserved */
-/* Slot 201 is reserved */
-/* Slot 202 is reserved */
-/* Slot 203 is reserved */
-/* Slot 204 is reserved */
-/* Slot 205 is reserved */
-/* Slot 206 is reserved */
-/* Slot 207 is reserved */
-/* Slot 208 is reserved */
+#ifndef TclObjGetFrame
+#define TclObjGetFrame \
+	(tclIntStubsPtr->tclObjGetFrame) /* 198 */
+#endif
+/* Slot 199 is reserved */
+#ifndef TclpObjRemoveDirectory
+#define TclpObjRemoveDirectory \
+	(tclIntStubsPtr->tclpObjRemoveDirectory) /* 200 */
+#endif
+#ifndef TclpObjCopyDirectory
+#define TclpObjCopyDirectory \
+	(tclIntStubsPtr->tclpObjCopyDirectory) /* 201 */
+#endif
+#ifndef TclpObjCreateDirectory
+#define TclpObjCreateDirectory \
+	(tclIntStubsPtr->tclpObjCreateDirectory) /* 202 */
+#endif
+#ifndef TclpObjDeleteFile
+#define TclpObjDeleteFile \
+	(tclIntStubsPtr->tclpObjDeleteFile) /* 203 */
+#endif
+#ifndef TclpObjCopyFile
+#define TclpObjCopyFile \
+	(tclIntStubsPtr->tclpObjCopyFile) /* 204 */
+#endif
+#ifndef TclpObjRenameFile
+#define TclpObjRenameFile \
+	(tclIntStubsPtr->tclpObjRenameFile) /* 205 */
+#endif
+#ifndef TclpObjStat
+#define TclpObjStat \
+	(tclIntStubsPtr->tclpObjStat) /* 206 */
+#endif
+#ifndef TclpObjAccess
+#define TclpObjAccess \
+	(tclIntStubsPtr->tclpObjAccess) /* 207 */
+#endif
+#ifndef TclpOpenFileChannel
+#define TclpOpenFileChannel \
+	(tclIntStubsPtr->tclpOpenFileChannel) /* 208 */
+#endif
 /* Slot 209 is reserved */
 /* Slot 210 is reserved */
 /* Slot 211 is reserved */
-/* Slot 212 is reserved */
-/* Slot 213 is reserved */
-/* Slot 214 is reserved */
-/* Slot 215 is reserved */
-/* Slot 216 is reserved */
-/* Slot 217 is reserved */
-/* Slot 218 is reserved */
+#ifndef TclpFindExecutable
+#define TclpFindExecutable \
+	(tclIntStubsPtr->tclpFindExecutable) /* 212 */
+#endif
+#ifndef TclGetObjNameOfExecutable
+#define TclGetObjNameOfExecutable \
+	(tclIntStubsPtr->tclGetObjNameOfExecutable) /* 213 */
+#endif
+#ifndef TclSetObjNameOfExecutable
+#define TclSetObjNameOfExecutable \
+	(tclIntStubsPtr->tclSetObjNameOfExecutable) /* 214 */
+#endif
+#ifndef TclStackAlloc
+#define TclStackAlloc \
+	(tclIntStubsPtr->tclStackAlloc) /* 215 */
+#endif
+#ifndef TclStackFree
+#define TclStackFree \
+	(tclIntStubsPtr->tclStackFree) /* 216 */
+#endif
+#ifndef TclPushStackFrame
+#define TclPushStackFrame \
+	(tclIntStubsPtr->tclPushStackFrame) /* 217 */
+#endif
+#ifndef TclPopStackFrame
+#define TclPopStackFrame \
+	(tclIntStubsPtr->tclPopStackFrame) /* 218 */
+#endif
 /* Slot 219 is reserved */
 /* Slot 220 is reserved */
 /* Slot 221 is reserved */
 /* Slot 222 is reserved */
 /* Slot 223 is reserved */
-/* Slot 224 is reserved */
-/* Slot 225 is reserved */
-/* Slot 226 is reserved */
-/* Slot 227 is reserved */
-/* Slot 228 is reserved */
-/* Slot 229 is reserved */
-/* Slot 230 is reserved */
-/* Slot 231 is reserved */
-/* Slot 232 is reserved */
-/* Slot 233 is reserved */
-/* Slot 234 is reserved */
-/* Slot 235 is reserved */
-/* Slot 236 is reserved */
+#ifndef TclGetPlatform
+#define TclGetPlatform \
+	(tclIntStubsPtr->tclGetPlatform) /* 224 */
+#endif
+#ifndef TclTraceDictPath
+#define TclTraceDictPath \
+	(tclIntStubsPtr->tclTraceDictPath) /* 225 */
+#endif
+#ifndef TclObjBeingDeleted
+#define TclObjBeingDeleted \
+	(tclIntStubsPtr->tclObjBeingDeleted) /* 226 */
+#endif
+#ifndef TclSetNsPath
+#define TclSetNsPath \
+	(tclIntStubsPtr->tclSetNsPath) /* 227 */
+#endif
+#ifndef TclObjInterpProcCore
+#define TclObjInterpProcCore \
+	(tclIntStubsPtr->tclObjInterpProcCore) /* 228 */
+#endif
+#ifndef TclPtrMakeUpvar
+#define TclPtrMakeUpvar \
+	(tclIntStubsPtr->tclPtrMakeUpvar) /* 229 */
+#endif
+#ifndef TclObjLookupVar
+#define TclObjLookupVar \
+	(tclIntStubsPtr->tclObjLookupVar) /* 230 */
+#endif
+#ifndef TclGetNamespaceFromObj
+#define TclGetNamespaceFromObj \
+	(tclIntStubsPtr->tclGetNamespaceFromObj) /* 231 */
+#endif
+#ifndef TclEvalObjEx
+#define TclEvalObjEx \
+	(tclIntStubsPtr->tclEvalObjEx) /* 232 */
+#endif
+#ifndef TclGetSrcInfoForPc
+#define TclGetSrcInfoForPc \
+	(tclIntStubsPtr->tclGetSrcInfoForPc) /* 233 */
+#endif
+#ifndef TclVarHashCreateVar
+#define TclVarHashCreateVar \
+	(tclIntStubsPtr->tclVarHashCreateVar) /* 234 */
+#endif
+#ifndef TclInitVarHashTable
+#define TclInitVarHashTable \
+	(tclIntStubsPtr->tclInitVarHashTable) /* 235 */
+#endif
+#ifndef TclBackgroundException
+#define TclBackgroundException \
+	(tclIntStubsPtr->tclBackgroundException) /* 236 */
+#endif
 /* Slot 237 is reserved */
 /* Slot 238 is reserved */
 /* Slot 239 is reserved */
 /* Slot 240 is reserved */
 /* Slot 241 is reserved */
 /* Slot 242 is reserved */
-/* Slot 243 is reserved */
+#ifndef TclDbDumpActiveObjects
+#define TclDbDumpActiveObjects \
+	(tclIntStubsPtr->tclDbDumpActiveObjects) /* 243 */
+#endif
 /* Slot 244 is reserved */
 /* Slot 245 is reserved */
 /* Slot 246 is reserved */
 /* Slot 247 is reserved */
 /* Slot 248 is reserved */
-#ifndef TclUnusedStubEntry
-#define TclUnusedStubEntry \
-	(tclIntStubsPtr->tclUnusedStubEntry) /* 249 */
+#ifndef TclDoubleDigits
+#define TclDoubleDigits \
+	(tclIntStubsPtr->tclDoubleDigits) /* 249 */
 #endif
 
 #endif /* defined(USE_TCL_STUBS) && !defined(USE_TCL_STUB_PROCS) */
@@ -1496,8 +2046,49 @@ extern TclIntStubs *tclIntStubsPtr;
 #if !defined(_WIN64)
 /* See bug 510001: TclSockMinimumBuffers needs plat imp */
 #   undef TclSockMinimumBuffers
-#   define TclSockMinimumBuffers(a,b) TclSockMinimumBuffersOld((int)(a),b)
+#   define TclSockMinimumBuffers(a,b) TclSockMinimumBuffersOld(PTR2INT(a),b)
+#endif
+
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLIMPORT
+
+#if defined(USE_TCL_STUBS) && defined(TCL_NO_DEPRECATED)
+#   undef Tcl_CreateNamespace
+#   define Tcl_CreateNamespace \
+	   (tclStubsPtr->tcl_CreateNamespace) /* 506 */
+#   undef Tcl_DeleteNamespace
+#   define Tcl_DeleteNamespace \
+	   (tclStubsPtr->tcl_DeleteNamespace) /* 507 */
+#   undef Tcl_AppendExportList
+#   define Tcl_AppendExportList \
+	   (tclStubsPtr->tcl_AppendExportList) /* 508 */
+#   undef Tcl_Export
+#   define Tcl_Export \
+	   (tclStubsPtr->tcl_Export) /* 509 */
+#   undef Tcl_Import
+#   define Tcl_Import \
+	   (tclStubsPtr->tcl_Import) /* 510 */
+#   undef Tcl_ForgetImport
+#   define Tcl_ForgetImport \
+	   (tclStubsPtr->tcl_ForgetImport) /* 511 */
+#   undef Tcl_GetCurrentNamespace
+#   define Tcl_GetCurrentNamespace \
+	   (tclStubsPtr->tcl_GetCurrentNamespace) /* 512 */
+#   undef Tcl_GetGlobalNamespace
+#   define Tcl_GetGlobalNamespace \
+	   (tclStubsPtr->tcl_GetGlobalNamespace) /* 513 */
+#   undef Tcl_FindNamespace
+#   define Tcl_FindNamespace \
+	   (tclStubsPtr->tcl_FindNamespace) /* 514 */
+#   undef Tcl_FindCommand
+#   define Tcl_FindCommand \
+	   (tclStubsPtr->tcl_FindCommand) /* 515 */
+#   undef Tcl_GetCommandFromObj
+#   define Tcl_GetCommandFromObj \
+	   (tclStubsPtr->tcl_GetCommandFromObj) /* 516 */
+#   undef Tcl_GetCommandFullName
+#   define Tcl_GetCommandFullName \
+	   (tclStubsPtr->tcl_GetCommandFullName) /* 517 */
 #endif
-#undef TclUnusedStubEntry
 
 #endif /* _TCLINTDECLS */
diff --git a/generic/tclIntPlatDecls.h b/generic/tclIntPlatDecls.h
index dcd9a4d..1e68c9c 100644
--- a/generic/tclIntPlatDecls.h
+++ b/generic/tclIntPlatDecls.h
@@ -18,6 +18,17 @@
 #   define DIR void
 #endif
 
+#undef TCL_STORAGE_CLASS
+#ifdef BUILD_tcl
+#   define TCL_STORAGE_CLASS DLLEXPORT
+#else
+#   ifdef USE_TCL_STUBS
+#      define TCL_STORAGE_CLASS
+#   else
+#      define TCL_STORAGE_CLASS DLLIMPORT
+#   endif
+#endif
+
 /*
  * WARNING: This file is automatically generated by the tools/genStubs.tcl
  * script.  Any modifications to the function declarations below should be made
@@ -31,46 +42,85 @@
  */
 
 #if !defined(__WIN32__) && !defined(__CYGWIN__) && !defined(MAC_OSX_TCL) /* UNIX */
+#ifndef TclGetAndDetachPids_TCL_DECLARED
+#define TclGetAndDetachPids_TCL_DECLARED
 /* 0 */
-EXTERN void		TclGetAndDetachPids _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
+EXTERN void		TclGetAndDetachPids(Tcl_Interp *interp,
+				Tcl_Channel chan);
+#endif
+#ifndef TclpCloseFile_TCL_DECLARED
+#define TclpCloseFile_TCL_DECLARED
 /* 1 */
-EXTERN int		TclpCloseFile _ANSI_ARGS_((TclFile file));
+EXTERN int		TclpCloseFile(TclFile file);
+#endif
+#ifndef TclpCreateCommandChannel_TCL_DECLARED
+#define TclpCreateCommandChannel_TCL_DECLARED
 /* 2 */
-EXTERN Tcl_Channel	TclpCreateCommandChannel _ANSI_ARGS_((
-				TclFile readFile, TclFile writeFile,
-				TclFile errorFile, int numPids,
-				Tcl_Pid *pidPtr));
+EXTERN Tcl_Channel	TclpCreateCommandChannel(TclFile readFile,
+				TclFile writeFile, TclFile errorFile,
+				int numPids, Tcl_Pid *pidPtr);
+#endif
+#ifndef TclpCreatePipe_TCL_DECLARED
+#define TclpCreatePipe_TCL_DECLARED
 /* 3 */
-EXTERN int		TclpCreatePipe _ANSI_ARGS_((TclFile *readPipe,
-				TclFile *writePipe));
+EXTERN int		TclpCreatePipe(TclFile *readPipe, TclFile *writePipe);
+#endif
+#ifndef TclpCreateProcess_TCL_DECLARED
+#define TclpCreateProcess_TCL_DECLARED
 /* 4 */
-EXTERN int		TclpCreateProcess _ANSI_ARGS_((Tcl_Interp *interp,
-				int argc, CONST char **argv,
-				TclFile inputFile, TclFile outputFile,
-				TclFile errorFile, Tcl_Pid *pidPtr));
+EXTERN int		TclpCreateProcess(Tcl_Interp *interp, int argc,
+				CONST char **argv, TclFile inputFile,
+				TclFile outputFile, TclFile errorFile,
+				Tcl_Pid *pidPtr);
+#endif
 /* Slot 5 is reserved */
+#ifndef TclpMakeFile_TCL_DECLARED
+#define TclpMakeFile_TCL_DECLARED
 /* 6 */
-EXTERN TclFile		TclpMakeFile _ANSI_ARGS_((Tcl_Channel channel,
-				int direction));
+EXTERN TclFile		TclpMakeFile(Tcl_Channel channel, int direction);
+#endif
+#ifndef TclpOpenFile_TCL_DECLARED
+#define TclpOpenFile_TCL_DECLARED
 /* 7 */
-EXTERN TclFile		TclpOpenFile _ANSI_ARGS_((CONST char *fname,
-				int mode));
+EXTERN TclFile		TclpOpenFile(CONST char *fname, int mode);
+#endif
+#ifndef TclUnixWaitForFile_TCL_DECLARED
+#define TclUnixWaitForFile_TCL_DECLARED
 /* 8 */
-EXTERN int		TclUnixWaitForFile _ANSI_ARGS_((int fd, int mask,
-				int timeout));
+EXTERN int		TclUnixWaitForFile(int fd, int mask, int timeout);
+#endif
+#ifndef TclpCreateTempFile_TCL_DECLARED
+#define TclpCreateTempFile_TCL_DECLARED
 /* 9 */
-EXTERN TclFile		TclpCreateTempFile _ANSI_ARGS_((CONST char *contents));
+EXTERN TclFile		TclpCreateTempFile(CONST char *contents);
+#endif
+#ifndef TclpReaddir_TCL_DECLARED
+#define TclpReaddir_TCL_DECLARED
 /* 10 */
-EXTERN Tcl_DirEntry *	TclpReaddir _ANSI_ARGS_((DIR *dir));
+EXTERN Tcl_DirEntry *	TclpReaddir(DIR *dir);
+#endif
+#ifndef TclpLocaltime_unix_TCL_DECLARED
+#define TclpLocaltime_unix_TCL_DECLARED
 /* 11 */
-EXTERN struct tm *	TclpLocaltime_unix _ANSI_ARGS_((
-				TclpTime_t_CONST clock));
+EXTERN struct tm *	TclpLocaltime_unix(CONST time_t *clock);
+#endif
+#ifndef TclpGmtime_unix_TCL_DECLARED
+#define TclpGmtime_unix_TCL_DECLARED
 /* 12 */
-EXTERN struct tm *	TclpGmtime_unix _ANSI_ARGS_((TclpTime_t_CONST clock));
+EXTERN struct tm *	TclpGmtime_unix(CONST time_t *clock);
+#endif
+#ifndef TclpInetNtoa_TCL_DECLARED
+#define TclpInetNtoa_TCL_DECLARED
 /* 13 */
-EXTERN char *		TclpInetNtoa _ANSI_ARGS_((struct in_addr addr));
-/* Slot 14 is reserved */
+EXTERN char *		TclpInetNtoa(struct in_addr addr);
+#endif
+#ifndef TclUnixCopyFile_TCL_DECLARED
+#define TclUnixCopyFile_TCL_DECLARED
+/* 14 */
+EXTERN int		TclUnixCopyFile(CONST char *src, CONST char *dst,
+				CONST Tcl_StatBuf *statBufPtr,
+				int dontCopyAtts);
+#endif
 /* Slot 15 is reserved */
 /* Slot 16 is reserved */
 /* Slot 17 is reserved */
@@ -85,133 +135,286 @@ EXTERN char *		TclpInetNtoa _ANSI_ARGS_((struct in_addr addr));
 /* Slot 26 is reserved */
 /* Slot 27 is reserved */
 /* Slot 28 is reserved */
+#ifndef TclWinCPUID_TCL_DECLARED
+#define TclWinCPUID_TCL_DECLARED
 /* 29 */
-EXTERN int		TclWinCPUID _ANSI_ARGS_((unsigned int index,
-				unsigned int *regs));
+EXTERN int		TclWinCPUID(unsigned int index, unsigned int *regs);
+#endif
 #endif /* UNIX */
 #if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
+#ifndef TclWinConvertError_TCL_DECLARED
+#define TclWinConvertError_TCL_DECLARED
 /* 0 */
-EXTERN void		TclWinConvertError _ANSI_ARGS_((DWORD errCode));
+EXTERN void		TclWinConvertError(DWORD errCode);
+#endif
+#ifndef TclWinConvertWSAError_TCL_DECLARED
+#define TclWinConvertWSAError_TCL_DECLARED
 /* 1 */
-EXTERN void		TclWinConvertWSAError _ANSI_ARGS_((DWORD errCode));
+EXTERN void		TclWinConvertWSAError(DWORD errCode);
+#endif
+#ifndef TclWinGetServByName_TCL_DECLARED
+#define TclWinGetServByName_TCL_DECLARED
 /* 2 */
-EXTERN struct servent *	 TclWinGetServByName _ANSI_ARGS_((CONST char *nm,
-				CONST char *proto));
+EXTERN struct servent *	 TclWinGetServByName(CONST char *nm,
+				CONST char *proto);
+#endif
+#ifndef TclWinGetSockOpt_TCL_DECLARED
+#define TclWinGetSockOpt_TCL_DECLARED
 /* 3 */
-EXTERN int		TclWinGetSockOpt _ANSI_ARGS_((SOCKET s, int level,
-				int optname, char *optval, int *optlen));
+EXTERN int		TclWinGetSockOpt(SOCKET s, int level, int optname,
+				char *optval, int *optlen);
+#endif
+#ifndef TclWinGetTclInstance_TCL_DECLARED
+#define TclWinGetTclInstance_TCL_DECLARED
 /* 4 */
-EXTERN HINSTANCE	TclWinGetTclInstance _ANSI_ARGS_((void));
+EXTERN HINSTANCE	TclWinGetTclInstance(void);
+#endif
+#ifndef TclUnixWaitForFile_TCL_DECLARED
+#define TclUnixWaitForFile_TCL_DECLARED
 /* 5 */
-EXTERN int		TclUnixWaitForFile _ANSI_ARGS_((int fd, int mask,
-				int timeout));
+EXTERN int		TclUnixWaitForFile(int fd, int mask, int timeout);
+#endif
+#ifndef TclWinNToHS_TCL_DECLARED
+#define TclWinNToHS_TCL_DECLARED
 /* 6 */
-EXTERN unsigned short	TclWinNToHS _ANSI_ARGS_((unsigned short ns));
+EXTERN unsigned short	TclWinNToHS(unsigned short ns);
+#endif
+#ifndef TclWinSetSockOpt_TCL_DECLARED
+#define TclWinSetSockOpt_TCL_DECLARED
 /* 7 */
-EXTERN int		TclWinSetSockOpt _ANSI_ARGS_((SOCKET s, int level,
-				int optname, CONST char *optval, int optlen));
+EXTERN int		TclWinSetSockOpt(SOCKET s, int level, int optname,
+				CONST char *optval, int optlen);
+#endif
+#ifndef TclpGetPid_TCL_DECLARED
+#define TclpGetPid_TCL_DECLARED
 /* 8 */
-EXTERN int		TclpGetPid _ANSI_ARGS_((Tcl_Pid pid));
+EXTERN int		TclpGetPid(Tcl_Pid pid);
+#endif
+#ifndef TclWinGetPlatformId_TCL_DECLARED
+#define TclWinGetPlatformId_TCL_DECLARED
 /* 9 */
-EXTERN int		TclWinGetPlatformId _ANSI_ARGS_((void));
+EXTERN int		TclWinGetPlatformId(void);
+#endif
+#ifndef TclpReaddir_TCL_DECLARED
+#define TclpReaddir_TCL_DECLARED
 /* 10 */
-EXTERN Tcl_DirEntry *	TclpReaddir _ANSI_ARGS_((DIR *dir));
+EXTERN Tcl_DirEntry *	TclpReaddir(DIR *dir);
+#endif
+#ifndef TclGetAndDetachPids_TCL_DECLARED
+#define TclGetAndDetachPids_TCL_DECLARED
 /* 11 */
-EXTERN void		TclGetAndDetachPids _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
+EXTERN void		TclGetAndDetachPids(Tcl_Interp *interp,
+				Tcl_Channel chan);
+#endif
+#ifndef TclpCloseFile_TCL_DECLARED
+#define TclpCloseFile_TCL_DECLARED
 /* 12 */
-EXTERN int		TclpCloseFile _ANSI_ARGS_((TclFile file));
+EXTERN int		TclpCloseFile(TclFile file);
+#endif
+#ifndef TclpCreateCommandChannel_TCL_DECLARED
+#define TclpCreateCommandChannel_TCL_DECLARED
 /* 13 */
-EXTERN Tcl_Channel	TclpCreateCommandChannel _ANSI_ARGS_((
-				TclFile readFile, TclFile writeFile,
-				TclFile errorFile, int numPids,
-				Tcl_Pid *pidPtr));
+EXTERN Tcl_Channel	TclpCreateCommandChannel(TclFile readFile,
+				TclFile writeFile, TclFile errorFile,
+				int numPids, Tcl_Pid *pidPtr);
+#endif
+#ifndef TclpCreatePipe_TCL_DECLARED
+#define TclpCreatePipe_TCL_DECLARED
 /* 14 */
-EXTERN int		TclpCreatePipe _ANSI_ARGS_((TclFile *readPipe,
-				TclFile *writePipe));
+EXTERN int		TclpCreatePipe(TclFile *readPipe, TclFile *writePipe);
+#endif
+#ifndef TclpCreateProcess_TCL_DECLARED
+#define TclpCreateProcess_TCL_DECLARED
 /* 15 */
-EXTERN int		TclpCreateProcess _ANSI_ARGS_((Tcl_Interp *interp,
-				int argc, CONST char **argv,
-				TclFile inputFile, TclFile outputFile,
-				TclFile errorFile, Tcl_Pid *pidPtr));
+EXTERN int		TclpCreateProcess(Tcl_Interp *interp, int argc,
+				CONST char **argv, TclFile inputFile,
+				TclFile outputFile, TclFile errorFile,
+				Tcl_Pid *pidPtr);
+#endif
+#ifndef TclpIsAtty_TCL_DECLARED
+#define TclpIsAtty_TCL_DECLARED
 /* 16 */
-EXTERN int		TclpIsAtty _ANSI_ARGS_((int fd));
-/* Slot 17 is reserved */
+EXTERN int		TclpIsAtty(int fd);
+#endif
+#ifndef TclUnixCopyFile_TCL_DECLARED
+#define TclUnixCopyFile_TCL_DECLARED
+/* 17 */
+EXTERN int		TclUnixCopyFile(CONST char *src, CONST char *dst,
+				CONST Tcl_StatBuf *statBufPtr,
+				int dontCopyAtts);
+#endif
+#ifndef TclpMakeFile_TCL_DECLARED
+#define TclpMakeFile_TCL_DECLARED
 /* 18 */
-EXTERN TclFile		TclpMakeFile _ANSI_ARGS_((Tcl_Channel channel,
-				int direction));
+EXTERN TclFile		TclpMakeFile(Tcl_Channel channel, int direction);
+#endif
+#ifndef TclpOpenFile_TCL_DECLARED
+#define TclpOpenFile_TCL_DECLARED
 /* 19 */
-EXTERN TclFile		TclpOpenFile _ANSI_ARGS_((CONST char *fname,
-				int mode));
+EXTERN TclFile		TclpOpenFile(CONST char *fname, int mode);
+#endif
+#ifndef TclWinAddProcess_TCL_DECLARED
+#define TclWinAddProcess_TCL_DECLARED
 /* 20 */
-EXTERN void		TclWinAddProcess _ANSI_ARGS_((HANDLE hProcess,
-				DWORD id));
+EXTERN void		TclWinAddProcess(HANDLE hProcess, DWORD id);
+#endif
+#ifndef TclpInetNtoa_TCL_DECLARED
+#define TclpInetNtoa_TCL_DECLARED
 /* 21 */
-EXTERN char *		TclpInetNtoa _ANSI_ARGS_((struct in_addr addr));
+EXTERN char *		TclpInetNtoa(struct in_addr addr);
+#endif
+#ifndef TclpCreateTempFile_TCL_DECLARED
+#define TclpCreateTempFile_TCL_DECLARED
 /* 22 */
-EXTERN TclFile		TclpCreateTempFile _ANSI_ARGS_((CONST char *contents));
+EXTERN TclFile		TclpCreateTempFile(CONST char *contents);
+#endif
+#ifndef TclpGetTZName_TCL_DECLARED
+#define TclpGetTZName_TCL_DECLARED
 /* 23 */
-EXTERN char *		TclpGetTZName _ANSI_ARGS_((int isdst));
+EXTERN char *		TclpGetTZName(int isdst);
+#endif
+#ifndef TclWinNoBackslash_TCL_DECLARED
+#define TclWinNoBackslash_TCL_DECLARED
 /* 24 */
-EXTERN char *		TclWinNoBackslash _ANSI_ARGS_((char *path));
-/* 25 */
-EXTERN TclPlatformType * TclWinGetPlatform _ANSI_ARGS_((void));
+EXTERN char *		TclWinNoBackslash(char *path);
+#endif
+/* Slot 25 is reserved */
+#ifndef TclWinSetInterfaces_TCL_DECLARED
+#define TclWinSetInterfaces_TCL_DECLARED
 /* 26 */
-EXTERN void		TclWinSetInterfaces _ANSI_ARGS_((int wide));
+EXTERN void		TclWinSetInterfaces(int wide);
+#endif
+#ifndef TclWinFlushDirtyChannels_TCL_DECLARED
+#define TclWinFlushDirtyChannels_TCL_DECLARED
 /* 27 */
-EXTERN void		TclWinFlushDirtyChannels _ANSI_ARGS_((void));
+EXTERN void		TclWinFlushDirtyChannels(void);
+#endif
+#ifndef TclWinResetInterfaces_TCL_DECLARED
+#define TclWinResetInterfaces_TCL_DECLARED
 /* 28 */
-EXTERN void		TclWinResetInterfaces _ANSI_ARGS_((void));
+EXTERN void		TclWinResetInterfaces(void);
+#endif
+#ifndef TclWinCPUID_TCL_DECLARED
+#define TclWinCPUID_TCL_DECLARED
 /* 29 */
-EXTERN int		TclWinCPUID _ANSI_ARGS_((unsigned int index,
-				unsigned int *regs));
+EXTERN int		TclWinCPUID(unsigned int index, unsigned int *regs);
+#endif
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
+#ifndef TclGetAndDetachPids_TCL_DECLARED
+#define TclGetAndDetachPids_TCL_DECLARED
 /* 0 */
-EXTERN void		TclGetAndDetachPids _ANSI_ARGS_((Tcl_Interp *interp,
-				Tcl_Channel chan));
+EXTERN void		TclGetAndDetachPids(Tcl_Interp *interp,
+				Tcl_Channel chan);
+#endif
+#ifndef TclpCloseFile_TCL_DECLARED
+#define TclpCloseFile_TCL_DECLARED
 /* 1 */
-EXTERN int		TclpCloseFile _ANSI_ARGS_((TclFile file));
+EXTERN int		TclpCloseFile(TclFile file);
+#endif
+#ifndef TclpCreateCommandChannel_TCL_DECLARED
+#define TclpCreateCommandChannel_TCL_DECLARED
 /* 2 */
-EXTERN Tcl_Channel	TclpCreateCommandChannel _ANSI_ARGS_((
-				TclFile readFile, TclFile writeFile,
-				TclFile errorFile, int numPids,
-				Tcl_Pid *pidPtr));
+EXTERN Tcl_Channel	TclpCreateCommandChannel(TclFile readFile,
+				TclFile writeFile, TclFile errorFile,
+				int numPids, Tcl_Pid *pidPtr);
+#endif
+#ifndef TclpCreatePipe_TCL_DECLARED
+#define TclpCreatePipe_TCL_DECLARED
 /* 3 */
-EXTERN int		TclpCreatePipe _ANSI_ARGS_((TclFile *readPipe,
-				TclFile *writePipe));
+EXTERN int		TclpCreatePipe(TclFile *readPipe, TclFile *writePipe);
+#endif
+#ifndef TclpCreateProcess_TCL_DECLARED
+#define TclpCreateProcess_TCL_DECLARED
 /* 4 */
-EXTERN int		TclpCreateProcess _ANSI_ARGS_((Tcl_Interp *interp,
-				int argc, CONST char **argv,
-				TclFile inputFile, TclFile outputFile,
-				TclFile errorFile, Tcl_Pid *pidPtr));
+EXTERN int		TclpCreateProcess(Tcl_Interp *interp, int argc,
+				CONST char **argv, TclFile inputFile,
+				TclFile outputFile, TclFile errorFile,
+				Tcl_Pid *pidPtr);
+#endif
 /* Slot 5 is reserved */
+#ifndef TclpMakeFile_TCL_DECLARED
+#define TclpMakeFile_TCL_DECLARED
 /* 6 */
-EXTERN TclFile		TclpMakeFile _ANSI_ARGS_((Tcl_Channel channel,
-				int direction));
+EXTERN TclFile		TclpMakeFile(Tcl_Channel channel, int direction);
+#endif
+#ifndef TclpOpenFile_TCL_DECLARED
+#define TclpOpenFile_TCL_DECLARED
 /* 7 */
-EXTERN TclFile		TclpOpenFile _ANSI_ARGS_((CONST char *fname,
-				int mode));
+EXTERN TclFile		TclpOpenFile(CONST char *fname, int mode);
+#endif
+#ifndef TclUnixWaitForFile_TCL_DECLARED
+#define TclUnixWaitForFile_TCL_DECLARED
 /* 8 */
-EXTERN int		TclUnixWaitForFile _ANSI_ARGS_((int fd, int mask,
-				int timeout));
+EXTERN int		TclUnixWaitForFile(int fd, int mask, int timeout);
+#endif
+#ifndef TclpCreateTempFile_TCL_DECLARED
+#define TclpCreateTempFile_TCL_DECLARED
 /* 9 */
-EXTERN TclFile		TclpCreateTempFile _ANSI_ARGS_((CONST char *contents));
+EXTERN TclFile		TclpCreateTempFile(CONST char *contents);
+#endif
+#ifndef TclpReaddir_TCL_DECLARED
+#define TclpReaddir_TCL_DECLARED
 /* 10 */
-EXTERN Tcl_DirEntry *	TclpReaddir _ANSI_ARGS_((DIR *dir));
+EXTERN Tcl_DirEntry *	TclpReaddir(DIR *dir);
+#endif
+#ifndef TclpLocaltime_unix_TCL_DECLARED
+#define TclpLocaltime_unix_TCL_DECLARED
 /* 11 */
-EXTERN struct tm *	TclpLocaltime_unix _ANSI_ARGS_((
-				TclpTime_t_CONST clock));
+EXTERN struct tm *	TclpLocaltime_unix(CONST time_t *clock);
+#endif
+#ifndef TclpGmtime_unix_TCL_DECLARED
+#define TclpGmtime_unix_TCL_DECLARED
 /* 12 */
-EXTERN struct tm *	TclpGmtime_unix _ANSI_ARGS_((TclpTime_t_CONST clock));
+EXTERN struct tm *	TclpGmtime_unix(CONST time_t *clock);
+#endif
+#ifndef TclpInetNtoa_TCL_DECLARED
+#define TclpInetNtoa_TCL_DECLARED
 /* 13 */
-EXTERN char *		TclpInetNtoa _ANSI_ARGS_((struct in_addr addr));
-/* Slot 14 is reserved */
-/* Slot 15 is reserved */
-/* Slot 16 is reserved */
-/* Slot 17 is reserved */
-/* Slot 18 is reserved */
-/* Slot 19 is reserved */
+EXTERN char *		TclpInetNtoa(struct in_addr addr);
+#endif
+#ifndef TclUnixCopyFile_TCL_DECLARED
+#define TclUnixCopyFile_TCL_DECLARED
+/* 14 */
+EXTERN int		TclUnixCopyFile(CONST char *src, CONST char *dst,
+				CONST Tcl_StatBuf *statBufPtr,
+				int dontCopyAtts);
+#endif
+#ifndef TclMacOSXGetFileAttribute_TCL_DECLARED
+#define TclMacOSXGetFileAttribute_TCL_DECLARED
+/* 15 */
+EXTERN int		TclMacOSXGetFileAttribute(Tcl_Interp *interp,
+				int objIndex, Tcl_Obj *fileName,
+				Tcl_Obj **attributePtrPtr);
+#endif
+#ifndef TclMacOSXSetFileAttribute_TCL_DECLARED
+#define TclMacOSXSetFileAttribute_TCL_DECLARED
+/* 16 */
+EXTERN int		TclMacOSXSetFileAttribute(Tcl_Interp *interp,
+				int objIndex, Tcl_Obj *fileName,
+				Tcl_Obj *attributePtr);
+#endif
+#ifndef TclMacOSXCopyFileAttributes_TCL_DECLARED
+#define TclMacOSXCopyFileAttributes_TCL_DECLARED
+/* 17 */
+EXTERN int		TclMacOSXCopyFileAttributes(CONST char *src,
+				CONST char *dst,
+				CONST Tcl_StatBuf *statBufPtr);
+#endif
+#ifndef TclMacOSXMatchType_TCL_DECLARED
+#define TclMacOSXMatchType_TCL_DECLARED
+/* 18 */
+EXTERN int		TclMacOSXMatchType(Tcl_Interp *interp,
+				CONST char *pathName, CONST char *fileName,
+				Tcl_StatBuf *statBufPtr,
+				Tcl_GlobTypeData *types);
+#endif
+#ifndef TclMacOSXNotifierAddRunLoopMode_TCL_DECLARED
+#define TclMacOSXNotifierAddRunLoopMode_TCL_DECLARED
+/* 19 */
+EXTERN void		TclMacOSXNotifierAddRunLoopMode(
+				CONST VOID *runLoopMode);
+#endif
 /* Slot 20 is reserved */
 /* Slot 21 is reserved */
 /* Slot 22 is reserved */
@@ -221,9 +424,11 @@ EXTERN char *		TclpInetNtoa _ANSI_ARGS_((struct in_addr addr));
 /* Slot 26 is reserved */
 /* Slot 27 is reserved */
 /* Slot 28 is reserved */
+#ifndef TclWinCPUID_TCL_DECLARED
+#define TclWinCPUID_TCL_DECLARED
 /* 29 */
-EXTERN int		TclWinCPUID _ANSI_ARGS_((unsigned int index,
-				unsigned int *regs));
+EXTERN int		TclWinCPUID(unsigned int index, unsigned int *regs);
+#endif
 #endif /* MACOSX */
 
 typedef struct TclIntPlatStubs {
@@ -231,21 +436,21 @@ typedef struct TclIntPlatStubs {
     struct TclIntPlatStubHooks *hooks;
 
 #if !defined(__WIN32__) && !defined(__CYGWIN__) && !defined(MAC_OSX_TCL) /* UNIX */
-    void (*tclGetAndDetachPids) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 0 */
-    int (*tclpCloseFile) _ANSI_ARGS_((TclFile file)); /* 1 */
-    Tcl_Channel (*tclpCreateCommandChannel) _ANSI_ARGS_((TclFile readFile, TclFile writeFile, TclFile errorFile, int numPids, Tcl_Pid *pidPtr)); /* 2 */
-    int (*tclpCreatePipe) _ANSI_ARGS_((TclFile *readPipe, TclFile *writePipe)); /* 3 */
-    int (*tclpCreateProcess) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST char **argv, TclFile inputFile, TclFile outputFile, TclFile errorFile, Tcl_Pid *pidPtr)); /* 4 */
+    void (*tclGetAndDetachPids) (Tcl_Interp *interp, Tcl_Channel chan); /* 0 */
+    int (*tclpCloseFile) (TclFile file); /* 1 */
+    Tcl_Channel (*tclpCreateCommandChannel) (TclFile readFile, TclFile writeFile, TclFile errorFile, int numPids, Tcl_Pid *pidPtr); /* 2 */
+    int (*tclpCreatePipe) (TclFile *readPipe, TclFile *writePipe); /* 3 */
+    int (*tclpCreateProcess) (Tcl_Interp *interp, int argc, CONST char **argv, TclFile inputFile, TclFile outputFile, TclFile errorFile, Tcl_Pid *pidPtr); /* 4 */
     VOID *reserved5;
-    TclFile (*tclpMakeFile) _ANSI_ARGS_((Tcl_Channel channel, int direction)); /* 6 */
-    TclFile (*tclpOpenFile) _ANSI_ARGS_((CONST char *fname, int mode)); /* 7 */
-    int (*tclUnixWaitForFile) _ANSI_ARGS_((int fd, int mask, int timeout)); /* 8 */
-    TclFile (*tclpCreateTempFile) _ANSI_ARGS_((CONST char *contents)); /* 9 */
-    Tcl_DirEntry * (*tclpReaddir) _ANSI_ARGS_((DIR *dir)); /* 10 */
-    struct tm * (*tclpLocaltime_unix) _ANSI_ARGS_((TclpTime_t_CONST clock)); /* 11 */
-    struct tm * (*tclpGmtime_unix) _ANSI_ARGS_((TclpTime_t_CONST clock)); /* 12 */
-    char * (*tclpInetNtoa) _ANSI_ARGS_((struct in_addr addr)); /* 13 */
-    VOID *reserved14;
+    TclFile (*tclpMakeFile) (Tcl_Channel channel, int direction); /* 6 */
+    TclFile (*tclpOpenFile) (CONST char *fname, int mode); /* 7 */
+    int (*tclUnixWaitForFile) (int fd, int mask, int timeout); /* 8 */
+    TclFile (*tclpCreateTempFile) (CONST char *contents); /* 9 */
+    Tcl_DirEntry * (*tclpReaddir) (DIR *dir); /* 10 */
+    struct tm * (*tclpLocaltime_unix) (CONST time_t *clock); /* 11 */
+    struct tm * (*tclpGmtime_unix) (CONST time_t *clock); /* 12 */
+    char * (*tclpInetNtoa) (struct in_addr addr); /* 13 */
+    int (*tclUnixCopyFile) (CONST char *src, CONST char *dst, CONST Tcl_StatBuf *statBufPtr, int dontCopyAtts); /* 14 */
     VOID *reserved15;
     VOID *reserved16;
     VOID *reserved17;
@@ -260,61 +465,61 @@ typedef struct TclIntPlatStubs {
     VOID *reserved26;
     VOID *reserved27;
     VOID *reserved28;
-    int (*tclWinCPUID) _ANSI_ARGS_((unsigned int index, unsigned int *regs)); /* 29 */
+    int (*tclWinCPUID) (unsigned int index, unsigned int *regs); /* 29 */
 #endif /* UNIX */
 #if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
-    void (*tclWinConvertError) _ANSI_ARGS_((DWORD errCode)); /* 0 */
-    void (*tclWinConvertWSAError) _ANSI_ARGS_((DWORD errCode)); /* 1 */
-    struct servent * (*tclWinGetServByName) _ANSI_ARGS_((CONST char *nm, CONST char *proto)); /* 2 */
-    int (*tclWinGetSockOpt) _ANSI_ARGS_((SOCKET s, int level, int optname, char *optval, int *optlen)); /* 3 */
-    HINSTANCE (*tclWinGetTclInstance) _ANSI_ARGS_((void)); /* 4 */
-    int (*tclUnixWaitForFile) _ANSI_ARGS_((int fd, int mask, int timeout)); /* 5 */
-    unsigned short (*tclWinNToHS) _ANSI_ARGS_((unsigned short ns)); /* 6 */
-    int (*tclWinSetSockOpt) _ANSI_ARGS_((SOCKET s, int level, int optname, CONST char *optval, int optlen)); /* 7 */
-    int (*tclpGetPid) _ANSI_ARGS_((Tcl_Pid pid)); /* 8 */
-    int (*tclWinGetPlatformId) _ANSI_ARGS_((void)); /* 9 */
-    Tcl_DirEntry * (*tclpReaddir) _ANSI_ARGS_((DIR *dir)); /* 10 */
-    void (*tclGetAndDetachPids) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 11 */
-    int (*tclpCloseFile) _ANSI_ARGS_((TclFile file)); /* 12 */
-    Tcl_Channel (*tclpCreateCommandChannel) _ANSI_ARGS_((TclFile readFile, TclFile writeFile, TclFile errorFile, int numPids, Tcl_Pid *pidPtr)); /* 13 */
-    int (*tclpCreatePipe) _ANSI_ARGS_((TclFile *readPipe, TclFile *writePipe)); /* 14 */
-    int (*tclpCreateProcess) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST char **argv, TclFile inputFile, TclFile outputFile, TclFile errorFile, Tcl_Pid *pidPtr)); /* 15 */
-    int (*tclpIsAtty) _ANSI_ARGS_((int fd)); /* 16 */
-    VOID *reserved17;
-    TclFile (*tclpMakeFile) _ANSI_ARGS_((Tcl_Channel channel, int direction)); /* 18 */
-    TclFile (*tclpOpenFile) _ANSI_ARGS_((CONST char *fname, int mode)); /* 19 */
-    void (*tclWinAddProcess) _ANSI_ARGS_((HANDLE hProcess, DWORD id)); /* 20 */
-    char * (*tclpInetNtoa) _ANSI_ARGS_((struct in_addr addr)); /* 21 */
-    TclFile (*tclpCreateTempFile) _ANSI_ARGS_((CONST char *contents)); /* 22 */
-    char * (*tclpGetTZName) _ANSI_ARGS_((int isdst)); /* 23 */
-    char * (*tclWinNoBackslash) _ANSI_ARGS_((char *path)); /* 24 */
-    TclPlatformType * (*tclWinGetPlatform) _ANSI_ARGS_((void)); /* 25 */
-    void (*tclWinSetInterfaces) _ANSI_ARGS_((int wide)); /* 26 */
-    void (*tclWinFlushDirtyChannels) _ANSI_ARGS_((void)); /* 27 */
-    void (*tclWinResetInterfaces) _ANSI_ARGS_((void)); /* 28 */
-    int (*tclWinCPUID) _ANSI_ARGS_((unsigned int index, unsigned int *regs)); /* 29 */
+    void (*tclWinConvertError) (DWORD errCode); /* 0 */
+    void (*tclWinConvertWSAError) (DWORD errCode); /* 1 */
+    struct servent * (*tclWinGetServByName) (CONST char *nm, CONST char *proto); /* 2 */
+    int (*tclWinGetSockOpt) (SOCKET s, int level, int optname, char *optval, int *optlen); /* 3 */
+    HINSTANCE (*tclWinGetTclInstance) (void); /* 4 */
+    int (*tclUnixWaitForFile) (int fd, int mask, int timeout); /* 5 */
+    unsigned short (*tclWinNToHS) (unsigned short ns); /* 6 */
+    int (*tclWinSetSockOpt) (SOCKET s, int level, int optname, CONST char *optval, int optlen); /* 7 */
+    int (*tclpGetPid) (Tcl_Pid pid); /* 8 */
+    int (*tclWinGetPlatformId) (void); /* 9 */
+    Tcl_DirEntry * (*tclpReaddir) (DIR *dir); /* 10 */
+    void (*tclGetAndDetachPids) (Tcl_Interp *interp, Tcl_Channel chan); /* 11 */
+    int (*tclpCloseFile) (TclFile file); /* 12 */
+    Tcl_Channel (*tclpCreateCommandChannel) (TclFile readFile, TclFile writeFile, TclFile errorFile, int numPids, Tcl_Pid *pidPtr); /* 13 */
+    int (*tclpCreatePipe) (TclFile *readPipe, TclFile *writePipe); /* 14 */
+    int (*tclpCreateProcess) (Tcl_Interp *interp, int argc, CONST char **argv, TclFile inputFile, TclFile outputFile, TclFile errorFile, Tcl_Pid *pidPtr); /* 15 */
+    int (*tclpIsAtty) (int fd); /* 16 */
+    int (*tclUnixCopyFile) (CONST char *src, CONST char *dst, CONST Tcl_StatBuf *statBufPtr, int dontCopyAtts); /* 17 */
+    TclFile (*tclpMakeFile) (Tcl_Channel channel, int direction); /* 18 */
+    TclFile (*tclpOpenFile) (CONST char *fname, int mode); /* 19 */
+    void (*tclWinAddProcess) (HANDLE hProcess, DWORD id); /* 20 */
+    char * (*tclpInetNtoa) (struct in_addr addr); /* 21 */
+    TclFile (*tclpCreateTempFile) (CONST char *contents); /* 22 */
+    char * (*tclpGetTZName) (int isdst); /* 23 */
+    char * (*tclWinNoBackslash) (char *path); /* 24 */
+    VOID *reserved25;
+    void (*tclWinSetInterfaces) (int wide); /* 26 */
+    void (*tclWinFlushDirtyChannels) (void); /* 27 */
+    void (*tclWinResetInterfaces) (void); /* 28 */
+    int (*tclWinCPUID) (unsigned int index, unsigned int *regs); /* 29 */
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
-    void (*tclGetAndDetachPids) _ANSI_ARGS_((Tcl_Interp *interp, Tcl_Channel chan)); /* 0 */
-    int (*tclpCloseFile) _ANSI_ARGS_((TclFile file)); /* 1 */
-    Tcl_Channel (*tclpCreateCommandChannel) _ANSI_ARGS_((TclFile readFile, TclFile writeFile, TclFile errorFile, int numPids, Tcl_Pid *pidPtr)); /* 2 */
-    int (*tclpCreatePipe) _ANSI_ARGS_((TclFile *readPipe, TclFile *writePipe)); /* 3 */
-    int (*tclpCreateProcess) _ANSI_ARGS_((Tcl_Interp *interp, int argc, CONST char **argv, TclFile inputFile, TclFile outputFile, TclFile errorFile, Tcl_Pid *pidPtr)); /* 4 */
+    void (*tclGetAndDetachPids) (Tcl_Interp *interp, Tcl_Channel chan); /* 0 */
+    int (*tclpCloseFile) (TclFile file); /* 1 */
+    Tcl_Channel (*tclpCreateCommandChannel) (TclFile readFile, TclFile writeFile, TclFile errorFile, int numPids, Tcl_Pid *pidPtr); /* 2 */
+    int (*tclpCreatePipe) (TclFile *readPipe, TclFile *writePipe); /* 3 */
+    int (*tclpCreateProcess) (Tcl_Interp *interp, int argc, CONST char **argv, TclFile inputFile, TclFile outputFile, TclFile errorFile, Tcl_Pid *pidPtr); /* 4 */
     VOID *reserved5;
-    TclFile (*tclpMakeFile) _ANSI_ARGS_((Tcl_Channel channel, int direction)); /* 6 */
-    TclFile (*tclpOpenFile) _ANSI_ARGS_((CONST char *fname, int mode)); /* 7 */
-    int (*tclUnixWaitForFile) _ANSI_ARGS_((int fd, int mask, int timeout)); /* 8 */
-    TclFile (*tclpCreateTempFile) _ANSI_ARGS_((CONST char *contents)); /* 9 */
-    Tcl_DirEntry * (*tclpReaddir) _ANSI_ARGS_((DIR *dir)); /* 10 */
-    struct tm * (*tclpLocaltime_unix) _ANSI_ARGS_((TclpTime_t_CONST clock)); /* 11 */
-    struct tm * (*tclpGmtime_unix) _ANSI_ARGS_((TclpTime_t_CONST clock)); /* 12 */
-    char * (*tclpInetNtoa) _ANSI_ARGS_((struct in_addr addr)); /* 13 */
-    VOID *reserved14;
-    VOID *reserved15;
-    VOID *reserved16;
-    VOID *reserved17;
-    VOID *reserved18;
-    VOID *reserved19;
+    TclFile (*tclpMakeFile) (Tcl_Channel channel, int direction); /* 6 */
+    TclFile (*tclpOpenFile) (CONST char *fname, int mode); /* 7 */
+    int (*tclUnixWaitForFile) (int fd, int mask, int timeout); /* 8 */
+    TclFile (*tclpCreateTempFile) (CONST char *contents); /* 9 */
+    Tcl_DirEntry * (*tclpReaddir) (DIR *dir); /* 10 */
+    struct tm * (*tclpLocaltime_unix) (CONST time_t *clock); /* 11 */
+    struct tm * (*tclpGmtime_unix) (CONST time_t *clock); /* 12 */
+    char * (*tclpInetNtoa) (struct in_addr addr); /* 13 */
+    int (*tclUnixCopyFile) (CONST char *src, CONST char *dst, CONST Tcl_StatBuf *statBufPtr, int dontCopyAtts); /* 14 */
+    int (*tclMacOSXGetFileAttribute) (Tcl_Interp *interp, int objIndex, Tcl_Obj *fileName, Tcl_Obj **attributePtrPtr); /* 15 */
+    int (*tclMacOSXSetFileAttribute) (Tcl_Interp *interp, int objIndex, Tcl_Obj *fileName, Tcl_Obj *attributePtr); /* 16 */
+    int (*tclMacOSXCopyFileAttributes) (CONST char *src, CONST char *dst, CONST Tcl_StatBuf *statBufPtr); /* 17 */
+    int (*tclMacOSXMatchType) (Tcl_Interp *interp, CONST char *pathName, CONST char *fileName, Tcl_StatBuf *statBufPtr, Tcl_GlobTypeData *types); /* 18 */
+    void (*tclMacOSXNotifierAddRunLoopMode) (CONST VOID *runLoopMode); /* 19 */
     VOID *reserved20;
     VOID *reserved21;
     VOID *reserved22;
@@ -324,7 +529,7 @@ typedef struct TclIntPlatStubs {
     VOID *reserved26;
     VOID *reserved27;
     VOID *reserved28;
-    int (*tclWinCPUID) _ANSI_ARGS_((unsigned int index, unsigned int *regs)); /* 29 */
+    int (*tclWinCPUID) (unsigned int index, unsigned int *regs); /* 29 */
 #endif /* MACOSX */
 } TclIntPlatStubs;
 
@@ -396,7 +601,10 @@ extern TclIntPlatStubs *tclIntPlatStubsPtr;
 #define TclpInetNtoa \
 	(tclIntPlatStubsPtr->tclpInetNtoa) /* 13 */
 #endif
-/* Slot 14 is reserved */
+#ifndef TclUnixCopyFile
+#define TclUnixCopyFile \
+	(tclIntPlatStubsPtr->tclUnixCopyFile) /* 14 */
+#endif
 /* Slot 15 is reserved */
 /* Slot 16 is reserved */
 /* Slot 17 is reserved */
@@ -485,7 +693,10 @@ extern TclIntPlatStubs *tclIntPlatStubsPtr;
 #define TclpIsAtty \
 	(tclIntPlatStubsPtr->tclpIsAtty) /* 16 */
 #endif
-/* Slot 17 is reserved */
+#ifndef TclUnixCopyFile
+#define TclUnixCopyFile \
+	(tclIntPlatStubsPtr->tclUnixCopyFile) /* 17 */
+#endif
 #ifndef TclpMakeFile
 #define TclpMakeFile \
 	(tclIntPlatStubsPtr->tclpMakeFile) /* 18 */
@@ -514,10 +725,7 @@ extern TclIntPlatStubs *tclIntPlatStubsPtr;
 #define TclWinNoBackslash \
 	(tclIntPlatStubsPtr->tclWinNoBackslash) /* 24 */
 #endif
-#ifndef TclWinGetPlatform
-#define TclWinGetPlatform \
-	(tclIntPlatStubsPtr->tclWinGetPlatform) /* 25 */
-#endif
+/* Slot 25 is reserved */
 #ifndef TclWinSetInterfaces
 #define TclWinSetInterfaces \
 	(tclIntPlatStubsPtr->tclWinSetInterfaces) /* 26 */
@@ -589,12 +797,30 @@ extern TclIntPlatStubs *tclIntPlatStubsPtr;
 #define TclpInetNtoa \
 	(tclIntPlatStubsPtr->tclpInetNtoa) /* 13 */
 #endif
-/* Slot 14 is reserved */
-/* Slot 15 is reserved */
-/* Slot 16 is reserved */
-/* Slot 17 is reserved */
-/* Slot 18 is reserved */
-/* Slot 19 is reserved */
+#ifndef TclUnixCopyFile
+#define TclUnixCopyFile \
+	(tclIntPlatStubsPtr->tclUnixCopyFile) /* 14 */
+#endif
+#ifndef TclMacOSXGetFileAttribute
+#define TclMacOSXGetFileAttribute \
+	(tclIntPlatStubsPtr->tclMacOSXGetFileAttribute) /* 15 */
+#endif
+#ifndef TclMacOSXSetFileAttribute
+#define TclMacOSXSetFileAttribute \
+	(tclIntPlatStubsPtr->tclMacOSXSetFileAttribute) /* 16 */
+#endif
+#ifndef TclMacOSXCopyFileAttributes
+#define TclMacOSXCopyFileAttributes \
+	(tclIntPlatStubsPtr->tclMacOSXCopyFileAttributes) /* 17 */
+#endif
+#ifndef TclMacOSXMatchType
+#define TclMacOSXMatchType \
+	(tclIntPlatStubsPtr->tclMacOSXMatchType) /* 18 */
+#endif
+#ifndef TclMacOSXNotifierAddRunLoopMode
+#define TclMacOSXNotifierAddRunLoopMode \
+	(tclIntPlatStubsPtr->tclMacOSXNotifierAddRunLoopMode) /* 19 */
+#endif
 /* Slot 20 is reserved */
 /* Slot 21 is reserved */
 /* Slot 22 is reserved */
@@ -614,10 +840,15 @@ extern TclIntPlatStubs *tclIntPlatStubsPtr;
 
 /* !END!: Do not edit above this line. */
 
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLIMPORT
 #undef TclpLocaltime_unix
 #undef TclpGmtime_unix
 
-#if !defined(__WIN32__) && !defined(__CYGWIN__)
+#if defined(__WIN32__) || defined(__CYGWIN__)
+#   undef TclWinNToHS
+#   define TclWinNToHS ntohs
+#else
 #   undef TclpGetPid
 #   define TclpGetPid(pid) ((unsigned long) (pid))
 #endif
diff --git a/generic/tclInterp.c b/generic/tclInterp.c
index 53686bd..0231909 100644
--- a/generic/tclInterp.c
+++ b/generic/tclInterp.c
@@ -1,63 +1,67 @@
-/* 
+/*
  * tclInterp.c --
  *
- *	This file implements the "interp" command which allows creation
- *	and manipulation of Tcl interpreters from within Tcl scripts.
+ *	This file implements the "interp" command which allows creation and
+ *	manipulation of Tcl interpreters from within Tcl scripts.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright (c) 2004 Donal K. Fellows
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
-#include <stdio.h>
-
+
 /*
- * Counter for how many aliases were created (global)
+ * A pointer to a string that holds an initialization script that if non-NULL
+ * is evaluated in Tcl_Init() prior to the built-in initialization script
+ * above. This variable can be modified by the function below.
  */
 
-static int aliasCounter = 0;
-TCL_DECLARE_MUTEX(cntMutex)
+static char *tclPreInitScript = NULL;
+
+/* Forward declaration */
+struct Target;
 
 /*
  * struct Alias:
  *
- * Stores information about an alias. Is stored in the slave interpreter
- * and used by the source command to find the target command in the master
- * when the source command is invoked.
+ * Stores information about an alias. Is stored in the slave interpreter and
+ * used by the source command to find the target command in the master when
+ * the source command is invoked.
  */
 
 typedef struct Alias {
-    Tcl_Obj *namePtr;		/* Name of alias command in slave interp. */
+    Tcl_Obj *token;		/* Token for the alias command in the slave
+				 * interp. This used to be the command name in
+				 * the slave when the alias was first
+				 * created. */
     Tcl_Interp *targetInterp;	/* Interp in which target command will be
 				 * invoked. */
-    Tcl_Command slaveCmd;	/* Source command in slave interpreter,
-				 * bound to command that invokes the target
-				 * command in the target interpreter. */
+    Tcl_Command slaveCmd;	/* Source command in slave interpreter, bound
+				 * to command that invokes the target command
+				 * in the target interpreter. */
     Tcl_HashEntry *aliasEntryPtr;
 				/* Entry for the alias hash table in slave.
-                                 * This is used by alias deletion to remove
-                                 * the alias from the slave interpreter
-                                 * alias table. */
-    Tcl_HashEntry *targetEntryPtr;
-				/* Entry for target command in master.
-                                 * This is used in the master interpreter to
-                                 * map back from the target command to aliases
-                                 * redirecting to it. Random access to this
-                                 * hash table is never required - we are using
-                                 * a hash table only for convenience. */
-    int objc;                   /* Count of Tcl_Obj in the prefix of the
-				 * target command to be invoked in the
-				 * target interpreter. Additional arguments
-				 * specified when calling the alias in the
-				 * slave interp will be appended to the prefix
-				 * before the command is invoked. */
-    Tcl_Obj *objPtr;            /* The first actual prefix object - the target
-				 * command name; this has to be at the end of the 
-				 * structure, which will be extended to accomodate 
-				 * the remaining objects in the prefix. */
+				 * This is used by alias deletion to remove
+				 * the alias from the slave interpreter alias
+				 * table. */
+    struct Target *targetPtr;	/* Entry for target command in master. This is
+				 * used in the master interpreter to map back
+				 * from the target command to aliases
+				 * redirecting to it. */
+    int objc;			/* Count of Tcl_Obj in the prefix of the
+				 * target command to be invoked in the target
+				 * interpreter. Additional arguments specified
+				 * when calling the alias in the slave interp
+				 * will be appended to the prefix before the
+				 * command is invoked. */
+    Tcl_Obj *objPtr;		/* The first actual prefix object - the target
+				 * command name; this has to be at the end of
+				 * the structure, which will be extended to
+				 * accomodate the remaining objects in the
+				 * prefix. */
 } Alias;
 
 /*
@@ -65,23 +69,23 @@ typedef struct Alias {
  * struct Slave:
  *
  * Used by the "interp" command to record and find information about slave
- * interpreters. Maps from a command name in the master to information about
- * a slave interpreter, e.g. what aliases are defined in it.
+ * interpreters. Maps from a command name in the master to information about a
+ * slave interpreter, e.g. what aliases are defined in it.
  */
 
 typedef struct Slave {
     Tcl_Interp *masterInterp;	/* Master interpreter for this slave. */
     Tcl_HashEntry *slaveEntryPtr;
-				/* Hash entry in masters slave table for
-                                 * this slave interpreter.  Used to find
-                                 * this record, and used when deleting the
-                                 * slave interpreter to delete it from the
-                                 * master's table. */
+				/* Hash entry in masters slave table for this
+				 * slave interpreter. Used to find this
+				 * record, and used when deleting the slave
+				 * interpreter to delete it from the master's
+				 * table. */
     Tcl_Interp	*slaveInterp;	/* The slave interpreter. */
     Tcl_Command interpCmd;	/* Interpreter object command. */
-    Tcl_HashTable aliasTable;	/* Table which maps from names of commands
-                                 * in slave interpreter to struct Alias
-                                 * defined below. */
+    Tcl_HashTable aliasTable;	/* Table which maps from names of commands in
+				 * slave interpreter to struct Alias defined
+				 * below. */
 } Slave;
 
 /*
@@ -92,43 +96,47 @@ typedef struct Slave {
  * interpreters and must be deleted when the target interpreter is deleted. In
  * case they would not be deleted the source interpreter would be left with a
  * "dangling pointer". One such record is stored in the Master record of the
- * master interpreter (in the targetTable hashtable, see below) with the
- * master for each alias which directs to a command in the master. These
- * records are used to remove the source command for an from a slave if/when
- * the master is deleted.
+ * master interpreter with the master for each alias which directs to a
+ * command in the master. These records are used to remove the source command
+ * for an from a slave if/when the master is deleted. They are organized in a
+ * doubly-linked list attached to the master interpreter.
  */
 
 typedef struct Target {
     Tcl_Command	slaveCmd;	/* Command for alias in slave interp. */
     Tcl_Interp *slaveInterp;	/* Slave Interpreter. */
+    struct Target *nextPtr;	/* Next in list of target records, or NULL if
+				 * at the end of the list of targets. */
+    struct Target *prevPtr;	/* Previous in list of target records, or NULL
+				 * if at the start of the list of targets. */
 } Target;
 
 /*
  * struct Master:
  *
- * This record is used for two purposes: First, slaveTable (a hashtable)
- * maps from names of commands to slave interpreters. This hashtable is
- * used to store information about slave interpreters of this interpreter,
- * to map over all slaves, etc. The second purpose is to store information
- * about all aliases in slaves (or siblings) which direct to target commands
- * in this interpreter (using the targetTable hashtable).
- * 
- * NB: the flags field in the interp structure, used with SAFE_INTERP
- * mask denotes whether the interpreter is safe or not. Safe
- * interpreters have restricted functionality, can only create safe slave
- * interpreters and can only load safe extensions.
+ * This record is used for two purposes: First, slaveTable (a hashtable) maps
+ * from names of commands to slave interpreters. This hashtable is used to
+ * store information about slave interpreters of this interpreter, to map over
+ * all slaves, etc. The second purpose is to store information about all
+ * aliases in slaves (or siblings) which direct to target commands in this
+ * interpreter (using the targetsPtr doubly-linked list).
+ *
+ * NB: the flags field in the interp structure, used with SAFE_INTERP mask
+ * denotes whether the interpreter is safe or not. Safe interpreters have
+ * restricted functionality, can only create safe slave interpreters and can
+ * only load safe extensions.
  */
 
 typedef struct Master {
-    Tcl_HashTable slaveTable;	/* Hash table for slave interpreters.
-                                 * Maps from command names to Slave records. */
-    Tcl_HashTable targetTable;	/* Hash table for Target Records. Contains
-                                 * all Target records which denote aliases
-                                 * from slaves or sibling interpreters that
-                                 * direct to commands in this interpreter. This
-                                 * table is used to remove dangling pointers
-                                 * from the slave (or sibling) interpreters
-                                 * when this interpreter is deleted. */
+    Tcl_HashTable slaveTable;	/* Hash table for slave interpreters. Maps
+				 * from command names to Slave records. */
+    Target *targetsPtr;		/* The head of a doubly-linked list of all the
+				 * target records which denote aliases from
+				 * slaves or sibling interpreters that direct
+				 * to commands in this interpreter. This list
+				 * is used to remove dangling pointers from
+				 * the slave (or sibling) interpreters when
+				 * this interpreter is deleted. */
 } Master;
 
 /*
@@ -144,67 +152,299 @@ typedef struct InterpInfo {
 } InterpInfo;
 
 /*
- * Prototypes for local static procedures:
+ * Limit callbacks handled by scripts are modelled as structures which are
+ * stored in hashes indexed by a two-word key. Note that the type of the
+ * 'type' field in the key is not int; this is to make sure that things are
+ * likely to work properly on 64-bit architectures.
+ */
+
+typedef struct ScriptLimitCallback {
+    Tcl_Interp *interp;		/* The interpreter in which to execute the
+				 * callback. */
+    Tcl_Obj *scriptObj;		/* The script to execute to perform the
+				 * user-defined part of the callback. */
+    int type;			/* What kind of callback is this. */
+    Tcl_HashEntry *entryPtr;	/* The entry in the hash table maintained by
+				 * the target interpreter that refers to this
+				 * callback record, or NULL if the entry has
+				 * already been deleted from that hash
+				 * table. */
+} ScriptLimitCallback;
+
+typedef struct ScriptLimitCallbackKey {
+    Tcl_Interp *interp;		/* The interpreter that the limit callback was
+				 * attached to. This is not the interpreter
+				 * that the callback runs in! */
+    long type;			/* The type of callback that this is. */
+} ScriptLimitCallbackKey;
+
+/*
+ * TIP#143 limit handler internal representation.
+ */
+
+struct LimitHandler {
+    int flags;			/* The state of this particular handler. */
+    Tcl_LimitHandlerProc *handlerProc;
+				/* The handler callback. */
+    ClientData clientData;	/* Opaque argument to the handler callback. */
+    Tcl_LimitHandlerDeleteProc *deleteProc;
+				/* How to delete the clientData. */
+    LimitHandler *prevPtr;	/* Previous item in linked list of
+				 * handlers. */
+    LimitHandler *nextPtr;	/* Next item in linked list of handlers. */
+};
+
+/*
+ * Values for the LimitHandler flags field.
+ *      LIMIT_HANDLER_ACTIVE - Whether the handler is currently being
+ *              processed; handlers are never to be entered reentrantly.
+ *      LIMIT_HANDLER_DELETED - Whether the handler has been deleted. This
+ *              should not normally be observed because when a handler is
+ *              deleted it is also spliced out of the list of handlers, but
+ *              even so we will be careful.
+ */
+
+#define LIMIT_HANDLER_ACTIVE    0x01
+#define LIMIT_HANDLER_DELETED   0x02
+
+
+
+/*
+ * Prototypes for local static functions:
  */
 
-static int		AliasCreate _ANSI_ARGS_((Tcl_Interp *interp,
+static int		AliasCreate(Tcl_Interp *interp,
 			    Tcl_Interp *slaveInterp, Tcl_Interp *masterInterp,
 			    Tcl_Obj *namePtr, Tcl_Obj *targetPtr, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		AliasDelete _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Interp *slaveInterp, Tcl_Obj *namePtr));
-static int		AliasDescribe _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Interp *slaveInterp, Tcl_Obj *objPtr));
-static int		AliasList _ANSI_ARGS_((Tcl_Interp *interp,
-		            Tcl_Interp *slaveInterp));
-static int		AliasObjCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Obj *const objv[]);
+static int		AliasDelete(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp, Tcl_Obj *namePtr);
+static int		AliasDescribe(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp, Tcl_Obj *objPtr);
+static int		AliasList(Tcl_Interp *interp, Tcl_Interp *slaveInterp);
+static int		AliasObjCmd(ClientData dummy,
 			    Tcl_Interp *currentInterp, int objc,
-		            Tcl_Obj *CONST objv[]));
-static void		AliasObjCmdDeleteProc _ANSI_ARGS_((
-			    ClientData clientData));
-
-static Tcl_Interp *	GetInterp _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *pathPtr));
-static Tcl_Interp *	GetInterp2 _ANSI_ARGS_((Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static void		InterpInfoDeleteProc _ANSI_ARGS_((
-			    ClientData clientData, Tcl_Interp *interp));
-static Tcl_Interp *	SlaveCreate _ANSI_ARGS_((Tcl_Interp *interp,
-		            Tcl_Obj *pathPtr, int safe));
-static int		SlaveEval _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tcl_Obj *const objv[]);
+static void		AliasObjCmdDeleteProc(ClientData clientData);
+static Tcl_Interp *	GetInterp(Tcl_Interp *interp, Tcl_Obj *pathPtr);
+static Tcl_Interp *	GetInterp2(Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static void		InterpInfoDeleteProc(ClientData clientData,
+			    Tcl_Interp *interp);
+static int		SlaveBgerror(Tcl_Interp *interp,
 			    Tcl_Interp *slaveInterp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		SlaveExpose _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tcl_Obj *const objv[]);
+static Tcl_Interp *	SlaveCreate(Tcl_Interp *interp, Tcl_Obj *pathPtr,
+			    int safe);
+static int		SlaveDebugCmd(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		SlaveEval(Tcl_Interp *interp, Tcl_Interp *slaveInterp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		SlaveExpose(Tcl_Interp *interp,
 			    Tcl_Interp *slaveInterp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		SlaveHide _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tcl_Obj *const objv[]);
+static int		SlaveHide(Tcl_Interp *interp, Tcl_Interp *slaveInterp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		SlaveHidden(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp);
+static int		SlaveInvokeHidden(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp,
+			    const char *namespaceName,
+			    int objc, Tcl_Obj *const objv[]);
+static int		SlaveMarkTrusted(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp);
+static int		SlaveObjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static void		SlaveObjCmdDeleteProc(ClientData clientData);
+static int		SlaveRecursionLimit(Tcl_Interp *interp,
 			    Tcl_Interp *slaveInterp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		SlaveHidden _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Interp *slaveInterp));
-static int		SlaveInvokeHidden _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Interp *slaveInterp, int global, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		SlaveMarkTrusted _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Interp *slaveInterp));
-static int		SlaveObjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static void		SlaveObjCmdDeleteProc _ANSI_ARGS_((
-			    ClientData clientData));
-static int		SlaveRecursionLimit _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Interp *slaveInterp, int objc,
-			    Tcl_Obj *CONST objv[]));
+			    Tcl_Obj *const objv[]);
+static int		SlaveCommandLimitCmd(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp, int consumedObjc,
+			    int objc, Tcl_Obj *const objv[]);
+static int		SlaveTimeLimitCmd(Tcl_Interp *interp,
+			    Tcl_Interp *slaveInterp, int consumedObjc,
+			    int objc, Tcl_Obj *const objv[]);
+static void		InheritLimitsFromMaster(Tcl_Interp *slaveInterp,
+			    Tcl_Interp *masterInterp);
+static void		SetScriptLimitCallback(Tcl_Interp *interp, int type,
+			    Tcl_Interp *targetInterp, Tcl_Obj *scriptObj);
+static void		CallScriptLimitCallback(ClientData clientData,
+			    Tcl_Interp *interp);
+static void		DeleteScriptLimitCallback(ClientData clientData);
+static void		RunLimitHandlers(LimitHandler *handlerPtr,
+			    Tcl_Interp *interp);
+static void		TimeLimitCallback(ClientData clientData);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetPreInitScript --
+ *
+ *	This routine is used to change the value of the internal variable,
+ *	tclPreInitScript.
+ *
+ * Results:
+ *	Returns the current value of tclPreInitScript.
+ *
+ * Side effects:
+ *	Changes the way Tcl_Init() routine behaves.
+ *
+ *----------------------------------------------------------------------
+ */
 
+char *
+TclSetPreInitScript(
+    char *string)		/* Pointer to a script. */
+{
+    char *prevString = tclPreInitScript;
+    tclPreInitScript = string;
+    return(prevString);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_Init --
+ *
+ *	This function is typically invoked by Tcl_AppInit functions to find
+ *	and source the "init.tcl" script, which should exist somewhere on the
+ *	Tcl library path.
+ *
+ * Results:
+ *	Returns a standard Tcl completion code and sets the interp's result if
+ *	there is an error.
+ *
+ * Side effects:
+ *	Depends on what's in the init.tcl script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_Init(
+    Tcl_Interp *interp)		/* Interpreter to initialize. */
+{
+    if (tclPreInitScript != NULL) {
+	if (Tcl_Eval(interp, tclPreInitScript) == TCL_ERROR) {
+	    return (TCL_ERROR);
+	};
+    }
+
+    /*
+     * In order to find init.tcl during initialization, the following script
+     * is invoked by Tcl_Init(). It looks in several different directories:
+     *
+     *	$tcl_library		- can specify a primary location, if set, no
+     *				  other locations will be checked. This is the
+     *				  recommended way for a program that embeds
+     *				  Tcl to specifically tell Tcl where to find
+     *				  an init.tcl file.
+     *
+     *	$env(TCL_LIBRARY)	- highest priority so user can always override
+     *				  the search path unless the application has
+     *				  specified an exact directory above
+     *
+     *	$tclDefaultLibrary	- INTERNAL: This variable is set by Tcl on
+     *				  those platforms where it can determine at
+     *				  runtime the directory where it expects the
+     *				  init.tcl file to be. After [tclInit] reads
+     *				  and uses this value, it [unset]s it.
+     *				  External users of Tcl should not make use of
+     *				  the variable to customize [tclInit].
+     *
+     *	$tcl_libPath		- OBSOLETE: This variable is no longer set by
+     *				  Tcl itself, but [tclInit] examines it in
+     *				  case some program that embeds Tcl is
+     *				  customizing [tclInit] by setting this
+     *				  variable to a list of directories in which
+     *				  to search.
+     *
+     *	[tcl::pkgconfig get scriptdir,runtime]
+     *				- the directory determined by configure to be
+     *				  the place where Tcl's script library is to
+     *				  be installed.
+     *
+     * The first directory on this path that contains a valid init.tcl script
+     * will be set as the value of tcl_library.
+     *
+     * Note that this entire search mechanism can be bypassed by defining an
+     * alternate tclInit command before calling Tcl_Init().
+     */
+
+    return Tcl_Eval(interp,
+"if {[namespace which -command tclInit] eq \"\"} {\n"
+"  proc tclInit {} {\n"
+"    global tcl_libPath tcl_library env tclDefaultLibrary\n"
+"    rename tclInit {}\n"
+"    if {[info exists tcl_library]} {\n"
+"	set scripts {{set tcl_library}}\n"
+"    } else {\n"
+"	set scripts {}\n"
+"	if {[info exists env(TCL_LIBRARY)] && ($env(TCL_LIBRARY) ne {})} {\n"
+"	    lappend scripts {set env(TCL_LIBRARY)}\n"
+"	    lappend scripts {\n"
+"if {[regexp ^tcl(.*)$ [file tail $env(TCL_LIBRARY)] -> tail] == 0} continue\n"
+"if {$tail eq [info tclversion]} continue\n"
+"file join [file dirname $env(TCL_LIBRARY)] tcl[info tclversion]}\n"
+"	}\n"
+"	if {[info exists tclDefaultLibrary]} {\n"
+"	    lappend scripts {set tclDefaultLibrary}\n"
+"	} else {\n"
+"	    lappend scripts {::tcl::pkgconfig get scriptdir,runtime}\n"
+"	}\n"
+"	lappend scripts {\n"
+"set parentDir [file dirname [file dirname [info nameofexecutable]]]\n"
+"set grandParentDir [file dirname $parentDir]\n"
+"file join $parentDir lib tcl[info tclversion]} \\\n"
+"	{file join $grandParentDir lib tcl[info tclversion]} \\\n"
+"	{file join $parentDir library} \\\n"
+"	{file join $grandParentDir library} \\\n"
+"	{file join $grandParentDir tcl[info patchlevel] library} \\\n"
+"	{\n"
+"file join [file dirname $grandParentDir] tcl[info patchlevel] library}\n"
+"	if {[info exists tcl_libPath]\n"
+"		&& [catch {llength $tcl_libPath} len] == 0} {\n"
+"	    for {set i 0} {$i < $len} {incr i} {\n"
+"		lappend scripts [list lindex \\$tcl_libPath $i]\n"
+"	    }\n"
+"	}\n"
+"    }\n"
+"    set dirs {}\n"
+"    set errors {}\n"
+"    foreach script $scripts {\n"
+"	lappend dirs [eval $script]\n"
+"	set tcl_library [lindex $dirs end]\n"
+"	set tclfile [file join $tcl_library init.tcl]\n"
+"	if {[file exists $tclfile]} {\n"
+"	    if {[catch {uplevel #0 [list source $tclfile]} msg opts]} {\n"
+"		append errors \"$tclfile: $msg\n\"\n"
+"		append errors \"[dict get $opts -errorinfo]\n\"\n"
+"		continue\n"
+"	    }\n"
+"	    unset -nocomplain tclDefaultLibrary\n"
+"	    return\n"
+"	}\n"
+"    }\n"
+"    unset -nocomplain tclDefaultLibrary\n"
+"    set msg \"Can't find a usable init.tcl in the following directories: \n\"\n"
+"    append msg \"    $dirs\n\n\"\n"
+"    append msg \"$errors\n\n\"\n"
+"    append msg \"This probably means that Tcl wasn't installed properly.\n\"\n"
+"    error $msg\n"
+"  }\n"
+"}\n"
+"tclInit");
+}
 
 /*
  *---------------------------------------------------------------------------
  *
  * TclInterpInit --
  *
- *	Initializes the invoking interpreter for using the master, slave
- *	and safe interp facilities.  This is called from inside
- *	Tcl_CreateInterp().
+ *	Initializes the invoking interpreter for using the master, slave and
+ *	safe interp facilities. This is called from inside Tcl_CreateInterp().
  *
  * Results:
  *	Always returns TCL_OK for backwards compatibility.
@@ -217,19 +457,19 @@ static int		SlaveRecursionLimit _ANSI_ARGS_((Tcl_Interp *interp,
  */
 
 int
-TclInterpInit(interp)
-    Tcl_Interp *interp;			/* Interpreter to initialize. */
+TclInterpInit(
+    Tcl_Interp *interp)		/* Interpreter to initialize. */
 {
     InterpInfo *interpInfoPtr;
     Master *masterPtr;
-    Slave *slavePtr;	
+    Slave *slavePtr;
 
     interpInfoPtr = (InterpInfo *) ckalloc(sizeof(InterpInfo));
-    ((Interp *) interp)->interpInfo = (ClientData) interpInfoPtr;
+    ((Interp *) interp)->interpInfo = interpInfoPtr;
 
     masterPtr = &interpInfoPtr->master;
     Tcl_InitHashTable(&masterPtr->slaveTable, TCL_STRING_KEYS);
-    Tcl_InitHashTable(&masterPtr->targetTable, TCL_ONE_WORD_KEYS);
+    masterPtr->targetsPtr = NULL;
 
     slavePtr = &interpInfoPtr->slave;
     slavePtr->masterInterp	= NULL;
@@ -249,30 +489,27 @@ TclInterpInit(interp)
  *
  * InterpInfoDeleteProc --
  *
- *	Invoked when an interpreter is being deleted.  It releases all
- *	storage used by the master/slave/safe interpreter facilities.
+ *	Invoked when an interpreter is being deleted. It releases all storage
+ *	used by the master/slave/safe interpreter facilities.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Cleans up storage.  Sets the interpInfoPtr field of the interp
- *	to NULL.
+ *	Cleans up storage. Sets the interpInfoPtr field of the interp to NULL.
  *
  *---------------------------------------------------------------------------
  */
 
 static void
-InterpInfoDeleteProc(clientData, interp)
-    ClientData clientData;	/* Ignored. */
-    Tcl_Interp *interp;		/* Interp being deleted.  All commands for
+InterpInfoDeleteProc(
+    ClientData clientData,	/* Ignored. */
+    Tcl_Interp *interp)		/* Interp being deleted. All commands for
 				 * slave interps should already be deleted. */
 {
     InterpInfo *interpInfoPtr;
     Slave *slavePtr;
     Master *masterPtr;
-    Tcl_HashSearch hSearch;
-    Tcl_HashEntry *hPtr;
     Target *targetPtr;
 
     interpInfoPtr = (InterpInfo *) ((Interp *) interp)->interpInfo;
@@ -283,36 +520,34 @@ InterpInfoDeleteProc(clientData, interp)
 
     masterPtr = &interpInfoPtr->master;
     if (masterPtr->slaveTable.numEntries != 0) {
-	panic("InterpInfoDeleteProc: still exist commands");
+	Tcl_Panic("InterpInfoDeleteProc: still exist commands");
     }
     Tcl_DeleteHashTable(&masterPtr->slaveTable);
 
     /*
      * Tell any interps that have aliases to this interp that they should
-     * delete those aliases.  If the other interp was already dead, it
-     * would have removed the target record already. 
+     * delete those aliases. If the other interp was already dead, it would
+     * have removed the target record already.
      */
 
-    hPtr = Tcl_FirstHashEntry(&masterPtr->targetTable, &hSearch);
-    while (hPtr != NULL) {
-	targetPtr = (Target *) Tcl_GetHashValue(hPtr);
+    for (targetPtr = masterPtr->targetsPtr; targetPtr != NULL; ) {
+	Target *tmpPtr = targetPtr->nextPtr;
 	Tcl_DeleteCommandFromToken(targetPtr->slaveInterp,
 		targetPtr->slaveCmd);
-	hPtr = Tcl_NextHashEntry(&hSearch);
+	targetPtr = tmpPtr;
     }
-    Tcl_DeleteHashTable(&masterPtr->targetTable);
 
     slavePtr = &interpInfoPtr->slave;
     if (slavePtr->interpCmd != NULL) {
 	/*
-	 * Tcl_DeleteInterp() was called on this interpreter, rather
-	 * "interp delete" or the equivalent deletion of the command in the
-	 * master.  First ensure that the cleanup callback doesn't try to
-	 * delete the interp again.
+	 * Tcl_DeleteInterp() was called on this interpreter, rather "interp
+	 * delete" or the equivalent deletion of the command in the master.
+	 * First ensure that the cleanup callback doesn't try to delete the
+	 * interp again.
 	 */
 
 	slavePtr->slaveInterp = NULL;
-        Tcl_DeleteCommandFromToken(slavePtr->masterInterp,
+	Tcl_DeleteCommandFromToken(slavePtr->masterInterp,
 		slavePtr->interpCmd);
     }
 
@@ -321,11 +556,11 @@ InterpInfoDeleteProc(clientData, interp)
      */
 
     if (slavePtr->aliasTable.numEntries != 0) {
-	panic("InterpInfoDeleteProc: still exist aliases");
+	Tcl_Panic("InterpInfoDeleteProc: still exist aliases");
     }
     Tcl_DeleteHashTable(&slavePtr->aliasTable);
 
-    ckfree((char *) interpInfoPtr);    
+    ckfree((char *) interpInfoPtr);
 }
 
 /*
@@ -333,8 +568,8 @@ InterpInfoDeleteProc(clientData, interp)
  *
  * Tcl_InterpObjCmd --
  *
- *	This procedure is invoked to process the "interp" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "interp" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -346,430 +581,472 @@ InterpInfoDeleteProc(clientData, interp)
  */
 	/* ARGSUSED */
 int
-Tcl_InterpObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Unused. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_InterpObjCmd(
+    ClientData clientData,		/* Unused. */
+    Tcl_Interp *interp,			/* Current interpreter. */
+    int objc,				/* Number of arguments. */
+    Tcl_Obj *const objv[])		/* Argument objects. */
 {
     int index;
-    static CONST char *options[] = {
-        "alias",	"aliases",	"create",	"delete", 
-	"eval",		"exists",	"expose",	"hide", 
-	"hidden",	"issafe",	"invokehidden",	"marktrusted", 
-	"recursionlimit",		"slaves",	"share",
-	"target",	"transfer",
-        NULL
+    static const char *options[] = {
+	"alias",	"aliases",	"bgerror",	"create",
+	"debug",	"delete",	"eval",		"exists",	"expose",
+	"hide",		"hidden",	"issafe",	"invokehidden",
+	"limit",	"marktrusted",	"recursionlimit","slaves",
+	"share",	"target",	"transfer",
+	NULL
     };
     enum option {
-	OPT_ALIAS,	OPT_ALIASES,	OPT_CREATE,	OPT_DELETE,
-	OPT_EVAL,	OPT_EXISTS,	OPT_EXPOSE,	OPT_HIDE,
-	OPT_HIDDEN,	OPT_ISSAFE,	OPT_INVOKEHID,	OPT_MARKTRUSTED,
-	OPT_RECLIMIT,			OPT_SLAVES,	OPT_SHARE,
-	OPT_TARGET,	OPT_TRANSFER
+	OPT_ALIAS,	OPT_ALIASES,	OPT_BGERROR,	OPT_CREATE,
+	OPT_DEBUG,	OPT_DELETE,	OPT_EVAL,	OPT_EXISTS,	OPT_EXPOSE,
+	OPT_HIDE,	OPT_HIDDEN,	OPT_ISSAFE,	OPT_INVOKEHID,
+	OPT_LIMIT,	OPT_MARKTRUSTED,OPT_RECLIMIT,	OPT_SLAVES,
+	OPT_SHARE,	OPT_TARGET,	OPT_TRANSFER
     };
 
-
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?");
+	return TCL_ERROR;
     }
-    if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, 
+    if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0,
 	    &index) != TCL_OK) {
 	return TCL_ERROR;
     }
     switch ((enum option) index) {
-	case OPT_ALIAS: {
-	    Tcl_Interp *slaveInterp, *masterInterp;
+    case OPT_ALIAS: {
+	Tcl_Interp *slaveInterp, *masterInterp;
 
-	    if (objc < 4) {
-		aliasArgs:
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"slavePath slaveCmd ?masterPath masterCmd? ?args ..?");
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == (Tcl_Interp *) NULL) {
+	if (objc < 4) {
+	aliasArgs:
+	    Tcl_WrongNumArgs(interp, 2, objv,
+		    "slavePath slaveCmd ?masterPath masterCmd? ?args ..?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	if (objc == 4) {
+	    return AliasDescribe(interp, slaveInterp, objv[3]);
+	}
+	if ((objc == 5) && (TclGetString(objv[4])[0] == '\0')) {
+	    return AliasDelete(interp, slaveInterp, objv[3]);
+	}
+	if (objc > 5) {
+	    masterInterp = GetInterp(interp, objv[4]);
+	    if (masterInterp == NULL) {
 		return TCL_ERROR;
 	    }
-	    if (objc == 4) {
-		return AliasDescribe(interp, slaveInterp, objv[3]);
-	    }
-	    if ((objc == 5) && (Tcl_GetString(objv[4])[0] == '\0')) {
-		return AliasDelete(interp, slaveInterp, objv[3]);
-	    }
-	    if (objc > 5) {
-		masterInterp = GetInterp(interp, objv[4]);
-		if (masterInterp == (Tcl_Interp *) NULL) {
-		    return TCL_ERROR;
-		}
-		if (Tcl_GetString(objv[5])[0] == '\0') {
-		    if (objc == 6) {
-			return AliasDelete(interp, slaveInterp, objv[3]);
-		    }
-		} else {
-		    return AliasCreate(interp, slaveInterp, masterInterp,
-			    objv[3], objv[5], objc - 6, objv + 6);
+	    if (TclGetString(objv[5])[0] == '\0') {
+		if (objc == 6) {
+		    return AliasDelete(interp, slaveInterp, objv[3]);
 		}
+	    } else {
+		return AliasCreate(interp, slaveInterp, masterInterp, objv[3],
+			objv[5], objc - 6, objv + 6);
 	    }
-	    goto aliasArgs;
 	}
-	case OPT_ALIASES: {
-	    Tcl_Interp *slaveInterp;
+	goto aliasArgs;
+    }
+    case OPT_ALIASES: {
+	Tcl_Interp *slaveInterp;
 
-	    slaveInterp = GetInterp2(interp, objc, objv);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    return AliasList(interp, slaveInterp);
-	}
-	case OPT_CREATE: {
-	    int i, last, safe;
-	    Tcl_Obj *slavePtr;
-	    char buf[16 + TCL_INTEGER_SPACE];
-	    static CONST char *options[] = {
-		"-safe",	"--",		NULL
-	    };
-	    enum option {
-		OPT_SAFE,	OPT_LAST
-	    };
-
-	    safe = Tcl_IsSafe(interp);
-	    
-	    /*
-	     * Weird historical rules: "-safe" is accepted at the end, too.
-	     */
+	slaveInterp = GetInterp2(interp, objc, objv);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return AliasList(interp, slaveInterp);
+    }
+    case OPT_BGERROR: {
+	Tcl_Interp *slaveInterp;
 
-	    slavePtr = NULL;
-	    last = 0;
-	    for (i = 2; i < objc; i++) {
-		if ((last == 0) && (Tcl_GetString(objv[i])[0] == '-')) {
-		    if (Tcl_GetIndexFromObj(interp, objv[i], options, "option",
-			    0, &index) != TCL_OK) {
-			return TCL_ERROR;
-		    }
-		    if (index == OPT_SAFE) {
-			safe = 1;
-			continue;
-		    }
-		    i++;
-		    last = 1;
-		}
-		if (slavePtr != NULL) {
-		    Tcl_WrongNumArgs(interp, 2, objv, "?-safe? ?--? ?path?");
+	if (objc != 3 && objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path ?cmdPrefix?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveBgerror(interp, slaveInterp, objc - 3, objv + 3);
+    }
+    case OPT_CREATE: {
+	int i, last, safe;
+	Tcl_Obj *slavePtr;
+	char buf[16 + TCL_INTEGER_SPACE];
+	static const char *options[] = {
+	    "-safe",	"--", NULL
+	};
+	enum option {
+	    OPT_SAFE,	OPT_LAST
+	};
+
+	safe = Tcl_IsSafe(interp);
+
+	/*
+	 * Weird historical rules: "-safe" is accepted at the end, too.
+	 */
+
+	slavePtr = NULL;
+	last = 0;
+	for (i = 2; i < objc; i++) {
+	    if ((last == 0) && (Tcl_GetString(objv[i])[0] == '-')) {
+		if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0,
+			&index) != TCL_OK) {
 		    return TCL_ERROR;
 		}
-		if (i < objc) {
-		    slavePtr = objv[i];
-		}
-	    }
-	    buf[0] = '\0';
-	    if (slavePtr == NULL) {
-		/*
-		 * Create an anonymous interpreter -- we choose its name and
-		 * the name of the command. We check that the command name
-		 * that we use for the interpreter does not collide with an
-		 * existing command in the master interpreter.
-		 */
-		
-		for (i = 0; ; i++) {
-		    Tcl_CmdInfo cmdInfo;
-		    
-		    sprintf(buf, "interp%d", i);
-		    if (Tcl_GetCommandInfo(interp, buf, &cmdInfo) == 0) {
-			break;
-		    }
+		if (index == OPT_SAFE) {
+		    safe = 1;
+		    continue;
 		}
-		slavePtr = Tcl_NewStringObj(buf, -1);
+		i++;
+		last = 1;
 	    }
-	    if (SlaveCreate(interp, slavePtr, safe) == NULL) {
-		if (buf[0] != '\0') {
-		    Tcl_DecrRefCount(slavePtr);
-		}
+	    if (slavePtr != NULL) {
+		Tcl_WrongNumArgs(interp, 2, objv, "?-safe? ?--? ?path?");
 		return TCL_ERROR;
 	    }
-	    Tcl_SetObjResult(interp, slavePtr);
-	    return TCL_OK;
-	}
-	case OPT_DELETE: {
-	    int i;
-	    InterpInfo *iiPtr;
-	    Tcl_Interp *slaveInterp;
-	    
-	    for (i = 2; i < objc; i++) {
-		slaveInterp = GetInterp(interp, objv[i]);
-		if (slaveInterp == NULL) {
-		    return TCL_ERROR;
-		} else if (slaveInterp == interp) {
-		    Tcl_ResetResult(interp);
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			    "cannot delete the current interpreter",
-			    (char *) NULL);
-		    return TCL_ERROR;
-		}
-		iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
-		Tcl_DeleteCommandFromToken(iiPtr->slave.masterInterp,
-			iiPtr->slave.interpCmd);
+	    if (i < objc) {
+		slavePtr = objv[i];
 	    }
-	    return TCL_OK;
 	}
-	case OPT_EVAL: {
-	    Tcl_Interp *slaveInterp;
+	buf[0] = '\0';
+	if (slavePtr == NULL) {
+	    /*
+	     * Create an anonymous interpreter -- we choose its name and the
+	     * name of the command. We check that the command name that we use
+	     * for the interpreter does not collide with an existing command
+	     * in the master interpreter.
+	     */
 
-	    if (objc < 4) {
-		Tcl_WrongNumArgs(interp, 2, objv, "path arg ?arg ...?");
-		return TCL_ERROR;
+	    for (i = 0; ; i++) {
+		Tcl_CmdInfo cmdInfo;
+
+		sprintf(buf, "interp%d", i);
+		if (Tcl_GetCommandInfo(interp, buf, &cmdInfo) == 0) {
+		    break;
+		}
 	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
+	    slavePtr = Tcl_NewStringObj(buf, -1);
+	}
+	if (SlaveCreate(interp, slavePtr, safe) == NULL) {
+	    if (buf[0] != '\0') {
+		Tcl_DecrRefCount(slavePtr);
 	    }
-	    return SlaveEval(interp, slaveInterp, objc - 3, objv + 3);
+	    return TCL_ERROR;
 	}
-	case OPT_EXISTS: {
-	    int exists;
-	    Tcl_Interp *slaveInterp;
+	Tcl_SetObjResult(interp, slavePtr);
+	return TCL_OK;
+    }
+    case OPT_DEBUG: {
+	/* TIP #378 */
+	Tcl_Interp *slaveInterp;
 
-	    exists = 1;
-	    slaveInterp = GetInterp2(interp, objc, objv);
-	    if (slaveInterp == NULL) {
-		if (objc > 3) {
-		    return TCL_ERROR;
-		}
-		Tcl_ResetResult(interp);
-		exists = 0;
-	    }
-	    Tcl_SetIntObj(Tcl_GetObjResult(interp), exists);
-	    return TCL_OK;
+	/*
+	 * Currently only -frame supported, otherwise ?-option ?value??
+	 */
+	if (objc < 3 || objc > 5) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path ?-frame ?bool??");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
 	}
-	case OPT_EXPOSE: {
-	    Tcl_Interp *slaveInterp;
+	return SlaveDebugCmd(interp, slaveInterp, objc - 3, objv + 3);
+    }
+    case OPT_DELETE: {
+	int i;
+	InterpInfo *iiPtr;
+	Tcl_Interp *slaveInterp;
 
-	    if ((objc < 4) || (objc > 5)) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"path hiddenCmdName ?cmdName?");
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
+	for (i = 2; i < objc; i++) {
+	    slaveInterp = GetInterp(interp, objv[i]);
 	    if (slaveInterp == NULL) {
 		return TCL_ERROR;
+	    } else if (slaveInterp == interp) {
+		Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			"cannot delete the current interpreter", -1));
+		return TCL_ERROR;
 	    }
-	    return SlaveExpose(interp, slaveInterp, objc - 3, objv + 3);
+	    iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
+	    Tcl_DeleteCommandFromToken(iiPtr->slave.masterInterp,
+		    iiPtr->slave.interpCmd);
 	}
-	case OPT_HIDE: {
-	    Tcl_Interp *slaveInterp;		/* A slave. */
+	return TCL_OK;
+    }
+    case OPT_EVAL: {
+	Tcl_Interp *slaveInterp;
 
-	    if ((objc < 4) || (objc > 5)) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"path cmdName ?hiddenCmdName?");
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == (Tcl_Interp *) NULL) {
+	if (objc < 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path arg ?arg ...?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveEval(interp, slaveInterp, objc - 3, objv + 3);
+    }
+    case OPT_EXISTS: {
+	int exists;
+	Tcl_Interp *slaveInterp;
+
+	exists = 1;
+	slaveInterp = GetInterp2(interp, objc, objv);
+	if (slaveInterp == NULL) {
+	    if (objc > 3) {
 		return TCL_ERROR;
 	    }
-	    return SlaveHide(interp, slaveInterp, objc - 3, objv + 3);
+	    Tcl_ResetResult(interp);
+	    exists = 0;
 	}
-	case OPT_HIDDEN: {
-	    Tcl_Interp *slaveInterp;		/* A slave. */
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(exists));
+	return TCL_OK;
+    }
+    case OPT_EXPOSE: {
+	Tcl_Interp *slaveInterp;
 
-	    slaveInterp = GetInterp2(interp, objc, objv);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    return SlaveHidden(interp, slaveInterp);
+	if ((objc < 4) || (objc > 5)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path hiddenCmdName ?cmdName?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
 	}
-	case OPT_ISSAFE: {
-	    Tcl_Interp *slaveInterp;
+	return SlaveExpose(interp, slaveInterp, objc - 3, objv + 3);
+    }
+    case OPT_HIDE: {
+	Tcl_Interp *slaveInterp;		/* A slave. */
 
-	    slaveInterp = GetInterp2(interp, objc, objv);
-	    if (slaveInterp == NULL) {
+	if ((objc < 4) || (objc > 5)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path cmdName ?hiddenCmdName?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveHide(interp, slaveInterp, objc - 3, objv + 3);
+    }
+    case OPT_HIDDEN: {
+	Tcl_Interp *slaveInterp;		/* A slave. */
+
+	slaveInterp = GetInterp2(interp, objc, objv);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveHidden(interp, slaveInterp);
+    }
+    case OPT_ISSAFE: {
+	Tcl_Interp *slaveInterp;
+
+	slaveInterp = GetInterp2(interp, objc, objv);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_IsSafe(slaveInterp)));
+	return TCL_OK;
+    }
+    case OPT_INVOKEHID: {
+	int i, index;
+	const char *namespaceName;
+	Tcl_Interp *slaveInterp;
+	static const char *hiddenOptions[] = {
+	    "-global",	"-namespace",	"--", NULL
+	};
+	enum hiddenOption {
+	    OPT_GLOBAL,	OPT_NAMESPACE,	OPT_LAST
+	};
+
+	namespaceName = NULL;
+	for (i = 3; i < objc; i++) {
+	    if (TclGetString(objv[i])[0] != '-') {
+		break;
+	    }
+	    if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions, "option",
+		    0, &index) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_IsSafe(slaveInterp));
-	    return TCL_OK;
-	}
-	case OPT_INVOKEHID: {
-	    int i, index, global;
-	    Tcl_Interp *slaveInterp;
-	    static CONST char *hiddenOptions[] = {
-		"-global",	"--",		NULL
-	    };
-	    enum hiddenOption {
-		OPT_GLOBAL,	OPT_LAST
-	    };
-
-	    global = 0;
-	    for (i = 3; i < objc; i++) {
-		if (Tcl_GetString(objv[i])[0] != '-') {
+	    if (index == OPT_GLOBAL) {
+		namespaceName = "::";
+	    } else if (index == OPT_NAMESPACE) {
+		if (++i == objc) { /* There must be more arguments. */
 		    break;
-		}
-		if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions,
-			"option", 0, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (index == OPT_GLOBAL) {
-		    global = 1;
 		} else {
-		    i++;
-		    break;
+		    namespaceName = TclGetString(objv[i]);
 		}
+	    } else {
+		i++;
+		break;
 	    }
-	    if (objc - i < 1) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"path ?-global? ?--? cmd ?arg ..?");
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == (Tcl_Interp *) NULL) {
-		return TCL_ERROR;
-	    }
-	    return SlaveInvokeHidden(interp, slaveInterp, global, objc - i,
-		    objv + i);
 	}
-	case OPT_MARKTRUSTED: {
-	    Tcl_Interp *slaveInterp;
+	if (objc - i < 1) {
+	    Tcl_WrongNumArgs(interp, 2, objv,
+		    "path ?-namespace ns? ?-global? ?--? cmd ?arg ..?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveInvokeHidden(interp, slaveInterp, namespaceName, objc - i,
+		objv + i);
+    }
+    case OPT_LIMIT: {
+	Tcl_Interp *slaveInterp;
+	static const char *limitTypes[] = {
+	    "commands", "time", NULL
+	};
+	enum LimitTypes {
+	    LIMIT_TYPE_COMMANDS, LIMIT_TYPE_TIME
+	};
+	int limitType;
+
+	if (objc < 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path limitType ?options?");
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetIndexFromObj(interp, objv[3], limitTypes, "limit type", 0,
+		&limitType) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch ((enum LimitTypes) limitType) {
+	case LIMIT_TYPE_COMMANDS:
+	    return SlaveCommandLimitCmd(interp, slaveInterp, 4, objc,objv);
+	case LIMIT_TYPE_TIME:
+	    return SlaveTimeLimitCmd(interp, slaveInterp, 4, objc, objv);
+	}
+    }
+    case OPT_MARKTRUSTED: {
+	Tcl_Interp *slaveInterp;
 
-	    if (objc != 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "path");
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    return SlaveMarkTrusted(interp, slaveInterp);
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path");
+	    return TCL_ERROR;
 	}
-	case OPT_RECLIMIT: {
-	    Tcl_Interp *slaveInterp;
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveMarkTrusted(interp, slaveInterp);
+    }
+    case OPT_RECLIMIT: {
+	Tcl_Interp *slaveInterp;
 
-	    if (objc != 3 && objc != 4) {
-		Tcl_WrongNumArgs(interp, 2, objv, "path ?newlimit?");
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    return SlaveRecursionLimit(interp, slaveInterp, objc - 3, objv + 3);
-	}
-	case OPT_SLAVES: {
-	    Tcl_Interp *slaveInterp;
-	    InterpInfo *iiPtr;
-	    Tcl_Obj *resultPtr;
-	    Tcl_HashEntry *hPtr;
-	    Tcl_HashSearch hashSearch;
-	    char *string;
-	    
-	    slaveInterp = GetInterp2(interp, objc, objv);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
-	    resultPtr = Tcl_GetObjResult(interp);
-	    hPtr = Tcl_FirstHashEntry(&iiPtr->master.slaveTable, &hashSearch);
-	    for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&hashSearch)) {
-		string = Tcl_GetHashKey(&iiPtr->master.slaveTable, hPtr);
-		Tcl_ListObjAppendElement(NULL, resultPtr,
-			Tcl_NewStringObj(string, -1));
-	    }
-	    return TCL_OK;
+	if (objc != 3 && objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path ?newlimit?");
+	    return TCL_ERROR;
 	}
-	case OPT_SHARE: {
-	    Tcl_Interp *slaveInterp;		/* A slave. */
-	    Tcl_Interp *masterInterp;		/* Its master. */
-	    Tcl_Channel chan;
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	return SlaveRecursionLimit(interp, slaveInterp, objc - 3, objv + 3);
+    }
+    case OPT_SLAVES: {
+	Tcl_Interp *slaveInterp;
+	InterpInfo *iiPtr;
+	Tcl_Obj *resultPtr;
+	Tcl_HashEntry *hPtr;
+	Tcl_HashSearch hashSearch;
+	char *string;
 
-	    if (objc != 5) {
-		Tcl_WrongNumArgs(interp, 2, objv, "srcPath channelId destPath");
-		return TCL_ERROR;
-	    }
-	    masterInterp = GetInterp(interp, objv[2]);
-	    if (masterInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    chan = Tcl_GetChannel(masterInterp, Tcl_GetString(objv[3]),
-		    NULL);
-	    if (chan == NULL) {
-		TclTransferResult(masterInterp, TCL_OK, interp);
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[4]);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    Tcl_RegisterChannel(slaveInterp, chan);
-	    return TCL_OK;
+	slaveInterp = GetInterp2(interp, objc, objv);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
+	resultPtr = Tcl_NewObj();
+	hPtr = Tcl_FirstHashEntry(&iiPtr->master.slaveTable, &hashSearch);
+	for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&hashSearch)) {
+	    string = Tcl_GetHashKey(&iiPtr->master.slaveTable, hPtr);
+	    Tcl_ListObjAppendElement(NULL, resultPtr,
+		    Tcl_NewStringObj(string, -1));
+	}
+	Tcl_SetObjResult(interp, resultPtr);
+	return TCL_OK;
+    }
+    case OPT_TRANSFER:
+    case OPT_SHARE: {
+	Tcl_Interp *slaveInterp;		/* A slave. */
+	Tcl_Interp *masterInterp;		/* Its master. */
+	Tcl_Channel chan;
+
+	if (objc != 5) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "srcPath channelId destPath");
+	    return TCL_ERROR;
 	}
-	case OPT_TARGET: {
-	    Tcl_Interp *slaveInterp;
-	    InterpInfo *iiPtr;
-	    Tcl_HashEntry *hPtr;	
-	    Alias *aliasPtr;		
-	    char *aliasName;
+	masterInterp = GetInterp(interp, objv[2]);
+	if (masterInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	chan = Tcl_GetChannel(masterInterp, TclGetString(objv[3]), NULL);
+	if (chan == NULL) {
+	    TclTransferResult(masterInterp, TCL_OK, interp);
+	    return TCL_ERROR;
+	}
+	slaveInterp = GetInterp(interp, objv[4]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
+	Tcl_RegisterChannel(slaveInterp, chan);
+	if (index == OPT_TRANSFER) {
+	    /*
+	     * When transferring, as opposed to sharing, we must unhitch the
+	     * channel from the interpreter where it started.
+	     */
 
-	    if (objc != 4) {
-		Tcl_WrongNumArgs(interp, 2, objv, "path alias");
+	    if (Tcl_UnregisterChannel(masterInterp, chan) != TCL_OK) {
+		TclTransferResult(masterInterp, TCL_OK, interp);
 		return TCL_ERROR;
 	    }
+	}
+	return TCL_OK;
+    }
+    case OPT_TARGET: {
+	Tcl_Interp *slaveInterp;
+	InterpInfo *iiPtr;
+	Tcl_HashEntry *hPtr;
+	Alias *aliasPtr;
+	char *aliasName;
+
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "path alias");
+	    return TCL_ERROR;
+	}
 
-	    slaveInterp = GetInterp(interp, objv[2]);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
+	slaveInterp = GetInterp(interp, objv[2]);
+	if (slaveInterp == NULL) {
+	    return TCL_ERROR;
+	}
 
-	    aliasName = Tcl_GetString(objv[3]);
+	aliasName = TclGetString(objv[3]);
 
-	    iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
-	    hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName);
-	    if (hPtr == NULL) {
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"alias \"", aliasName, "\" in path \"",
-			Tcl_GetString(objv[2]), "\" not found",
-			(char *) NULL);
-		return TCL_ERROR;
-	    }
-	    aliasPtr = (Alias *) Tcl_GetHashValue(hPtr);
-	    if (Tcl_GetInterpPath(interp, aliasPtr->targetInterp) != TCL_OK) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"target interpreter for alias \"", aliasName,
-			"\" in path \"", Tcl_GetString(objv[2]),
-			"\" is not my descendant", (char *) NULL);
-		return TCL_ERROR;
-	    }
-	    return TCL_OK;
+	iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
+	hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName);
+	if (hPtr == NULL) {
+	    Tcl_AppendResult(interp, "alias \"", aliasName, "\" in path \"",
+		    Tcl_GetString(objv[2]), "\" not found", NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", aliasName,
+		    NULL);
+	    return TCL_ERROR;
 	}
-	case OPT_TRANSFER: {
-	    Tcl_Interp *slaveInterp;		/* A slave. */
-	    Tcl_Interp *masterInterp;		/* Its master. */
-	    Tcl_Channel chan;
-		    
-	    if (objc != 5) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"srcPath channelId destPath");
-		return TCL_ERROR;
-	    }
-	    masterInterp = GetInterp(interp, objv[2]);
-	    if (masterInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    chan = Tcl_GetChannel(masterInterp, Tcl_GetString(objv[3]), NULL);
-	    if (chan == NULL) {
-		TclTransferResult(masterInterp, TCL_OK, interp);
-		return TCL_ERROR;
-	    }
-	    slaveInterp = GetInterp(interp, objv[4]);
-	    if (slaveInterp == NULL) {
-		return TCL_ERROR;
-	    }
-	    Tcl_RegisterChannel(slaveInterp, chan);
-	    if (Tcl_UnregisterChannel(masterInterp, chan) != TCL_OK) {
-		TclTransferResult(masterInterp, TCL_OK, interp);
-		return TCL_ERROR;
-	    }
-	    return TCL_OK;
+	aliasPtr = Tcl_GetHashValue(hPtr);
+	if (Tcl_GetInterpPath(interp, aliasPtr->targetInterp) != TCL_OK) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "target interpreter for alias \"",
+		    aliasName, "\" in path \"", Tcl_GetString(objv[2]),
+		    "\" is not my descendant", NULL);
+	    return TCL_ERROR;
 	}
+	return TCL_OK;
+    }
     }
     return TCL_OK;
 }
@@ -783,24 +1060,24 @@ Tcl_InterpObjCmd(clientData, interp, objc, objv)
  *	potentially specified on the command line to an Tcl_Interp.
  *
  * Results:
- *	The return value is the interp specified on the command line,
- *	or the interp argument itself if no interp was specified on the
- *	command line.  If the interp could not be found or the wrong
- *	number of arguments was specified on the command line, the return
- *	value is NULL and an error message is left in the interp's result.
+ *	The return value is the interp specified on the command line, or the
+ *	interp argument itself if no interp was specified on the command line.
+ *	If the interp could not be found or the wrong number of arguments was
+ *	specified on the command line, the return value is NULL and an error
+ *	message is left in the interp's result.
  *
  * Side effects:
  *	None.
  *
  *---------------------------------------------------------------------------
  */
- 
+
 static Tcl_Interp *
-GetInterp2(interp, objc, objv)
-    Tcl_Interp *interp;		/* Default interp if no interp was specified
+GetInterp2(
+    Tcl_Interp *interp,		/* Default interp if no interp was specified
 				 * on the command line. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     if (objc == 2) {
 	return interp;
@@ -829,25 +1106,26 @@ GetInterp2(interp, objc, objv)
  */
 
 int
-Tcl_CreateAlias(slaveInterp, slaveCmd, targetInterp, targetCmd, argc, argv)
-    Tcl_Interp *slaveInterp;	/* Interpreter for source command. */
-    CONST char *slaveCmd;	/* Command to install in slave. */
-    Tcl_Interp *targetInterp;	/* Interpreter for target command. */
-    CONST char *targetCmd;	/* Name of target command. */
-    int argc;			/* How many additional arguments? */
-    CONST char * CONST *argv;	/* These are the additional args. */
+Tcl_CreateAlias(
+    Tcl_Interp *slaveInterp,	/* Interpreter for source command. */
+    const char *slaveCmd,	/* Command to install in slave. */
+    Tcl_Interp *targetInterp,	/* Interpreter for target command. */
+    const char *targetCmd,	/* Name of target command. */
+    int argc,			/* How many additional arguments? */
+    const char *const *argv)	/* These are the additional args. */
 {
     Tcl_Obj *slaveObjPtr, *targetObjPtr;
     Tcl_Obj **objv;
     int i;
     int result;
-    
-    objv = (Tcl_Obj **) ckalloc((unsigned) sizeof(Tcl_Obj *) * argc);
+
+    objv = (Tcl_Obj **)
+	    TclStackAlloc(slaveInterp, (unsigned) sizeof(Tcl_Obj *) * argc);
     for (i = 0; i < argc; i++) {
-        objv[i] = Tcl_NewStringObj(argv[i], -1);
-        Tcl_IncrRefCount(objv[i]);
+	objv[i] = Tcl_NewStringObj(argv[i], -1);
+	Tcl_IncrRefCount(objv[i]);
     }
-    
+
     slaveObjPtr = Tcl_NewStringObj(slaveCmd, -1);
     Tcl_IncrRefCount(slaveObjPtr);
 
@@ -860,7 +1138,7 @@ Tcl_CreateAlias(slaveInterp, slaveCmd, targetInterp, targetCmd, argc, argv)
     for (i = 0; i < argc; i++) {
 	Tcl_DecrRefCount(objv[i]);
     }
-    ckfree((char *) objv);
+    TclStackFree(slaveInterp, objv);
     Tcl_DecrRefCount(targetObjPtr);
     Tcl_DecrRefCount(slaveObjPtr);
 
@@ -884,13 +1162,13 @@ Tcl_CreateAlias(slaveInterp, slaveCmd, targetInterp, targetCmd, argc, argv)
  */
 
 int
-Tcl_CreateAliasObj(slaveInterp, slaveCmd, targetInterp, targetCmd, objc, objv)
-    Tcl_Interp *slaveInterp;	/* Interpreter for source command. */
-    CONST char *slaveCmd;	/* Command to install in slave. */
-    Tcl_Interp *targetInterp;	/* Interpreter for target command. */
-    CONST char *targetCmd;	/* Name of target command. */
-    int objc;			/* How many additional arguments? */
-    Tcl_Obj *CONST objv[];	/* Argument vector. */
+Tcl_CreateAliasObj(
+    Tcl_Interp *slaveInterp,	/* Interpreter for source command. */
+    const char *slaveCmd,	/* Command to install in slave. */
+    Tcl_Interp *targetInterp,	/* Interpreter for target command. */
+    const char *targetCmd,	/* Name of target command. */
+    int objc,			/* How many additional arguments? */
+    Tcl_Obj *const objv[])	/* Argument vector. */
 {
     Tcl_Obj *slaveObjPtr, *targetObjPtr;
     int result;
@@ -917,7 +1195,7 @@ Tcl_CreateAliasObj(slaveInterp, slaveCmd, targetInterp, targetCmd, objc, objv)
  *	Gets information about an alias.
  *
  * Results:
- *	A standard Tcl result. 
+ *	A standard Tcl result.
  *
  * Side effects:
  *	None.
@@ -926,29 +1204,28 @@ Tcl_CreateAliasObj(slaveInterp, slaveCmd, targetInterp, targetCmd, objc, objv)
  */
 
 int
-Tcl_GetAlias(interp, aliasName, targetInterpPtr, targetNamePtr, argcPtr,
-        argvPtr)
-    Tcl_Interp *interp;			/* Interp to start search from. */
-    CONST char *aliasName;			/* Name of alias to find. */
-    Tcl_Interp **targetInterpPtr;	/* (Return) target interpreter. */
-    CONST char **targetNamePtr;		/* (Return) name of target command. */
-    int *argcPtr;			/* (Return) count of addnl args. */
-    CONST char ***argvPtr;		/* (Return) additional arguments. */
+Tcl_GetAlias(
+    Tcl_Interp *interp,		/* Interp to start search from. */
+    const char *aliasName,	/* Name of alias to find. */
+    Tcl_Interp **targetInterpPtr,
+				/* (Return) target interpreter. */
+    const char **targetNamePtr,	/* (Return) name of target command. */
+    int *argcPtr,		/* (Return) count of addnl args. */
+    const char ***argvPtr)	/* (Return) additional arguments. */
 {
-    InterpInfo *iiPtr;
+    InterpInfo *iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo;
     Tcl_HashEntry *hPtr;
     Alias *aliasPtr;
     int i, objc;
     Tcl_Obj **objv;
-    
-    iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo;
+
     hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName);
     if (hPtr == NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "alias \"", aliasName, "\" not found", (char *) NULL);
+	Tcl_AppendResult(interp, "alias \"", aliasName, "\" not found", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", aliasName, NULL);
 	return TCL_ERROR;
     }
-    aliasPtr = (Alias *) Tcl_GetHashValue(hPtr);
+    aliasPtr = Tcl_GetHashValue(hPtr);
     objc = aliasPtr->objc;
     objv = &aliasPtr->objPtr;
 
@@ -956,17 +1233,17 @@ Tcl_GetAlias(interp, aliasName, targetInterpPtr, targetNamePtr, argcPtr,
 	*targetInterpPtr = aliasPtr->targetInterp;
     }
     if (targetNamePtr != NULL) {
-	*targetNamePtr = Tcl_GetString(objv[0]);
+	*targetNamePtr = TclGetString(objv[0]);
     }
     if (argcPtr != NULL) {
 	*argcPtr = objc - 1;
     }
     if (argvPtr != NULL) {
-        *argvPtr = (CONST char **) 
-		ckalloc((unsigned) sizeof(CONST char *) * (objc - 1));
-        for (i = 1; i < objc; i++) {
-            (*argvPtr)[i - 1] = Tcl_GetString(objv[i]);
-        }
+	*argvPtr = (const char **)
+		ckalloc((unsigned) sizeof(const char *) * (objc - 1));
+	for (i = 1; i < objc; i++) {
+	    (*argvPtr)[i - 1] = TclGetString(objv[i]);
+	}
     }
     return TCL_OK;
 }
@@ -988,43 +1265,42 @@ Tcl_GetAlias(interp, aliasName, targetInterpPtr, targetNamePtr, argcPtr,
  */
 
 int
-Tcl_GetAliasObj(interp, aliasName, targetInterpPtr, targetNamePtr, objcPtr,
-        objvPtr)
-    Tcl_Interp *interp;			/* Interp to start search from. */
-    CONST char *aliasName;		/* Name of alias to find. */
-    Tcl_Interp **targetInterpPtr;	/* (Return) target interpreter. */
-    CONST char **targetNamePtr;		/* (Return) name of target command. */
-    int *objcPtr;			/* (Return) count of addnl args. */
-    Tcl_Obj ***objvPtr;			/* (Return) additional args. */
+Tcl_GetAliasObj(
+    Tcl_Interp *interp,		/* Interp to start search from. */
+    const char *aliasName,	/* Name of alias to find. */
+    Tcl_Interp **targetInterpPtr,
+				/* (Return) target interpreter. */
+    const char **targetNamePtr,	/* (Return) name of target command. */
+    int *objcPtr,		/* (Return) count of addnl args. */
+    Tcl_Obj ***objvPtr)		/* (Return) additional args. */
 {
-    InterpInfo *iiPtr;
+    InterpInfo *iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo;
     Tcl_HashEntry *hPtr;
-    Alias *aliasPtr;	
+    Alias *aliasPtr;
     int objc;
     Tcl_Obj **objv;
 
-    iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo;
     hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName);
-    if (hPtr == (Tcl_HashEntry *) NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "alias \"", aliasName, "\" not found", (char *) NULL);
-        return TCL_ERROR;
+    if (hPtr == NULL) {
+	Tcl_AppendResult(interp, "alias \"", aliasName, "\" not found", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", aliasName, NULL);
+	return TCL_ERROR;
     }
-    aliasPtr = (Alias *) Tcl_GetHashValue(hPtr);
+    aliasPtr = Tcl_GetHashValue(hPtr);
     objc = aliasPtr->objc;
     objv = &aliasPtr->objPtr;
 
-    if (targetInterpPtr != (Tcl_Interp **) NULL) {
-        *targetInterpPtr = aliasPtr->targetInterp;
+    if (targetInterpPtr != NULL) {
+	*targetInterpPtr = aliasPtr->targetInterp;
     }
-    if (targetNamePtr != (CONST char **) NULL) {
-        *targetNamePtr = Tcl_GetString(objv[0]);
+    if (targetNamePtr != NULL) {
+	*targetNamePtr = TclGetString(objv[0]);
     }
-    if (objcPtr != (int *) NULL) {
-        *objcPtr = objc - 1;
+    if (objcPtr != NULL) {
+	*objcPtr = objc - 1;
     }
-    if (objvPtr != (Tcl_Obj ***) NULL) {
-        *objvPtr = objv + 1;
+    if (objvPtr != NULL) {
+	*objvPtr = objv + 1;
     }
     return TCL_OK;
 }
@@ -1034,30 +1310,29 @@ Tcl_GetAliasObj(interp, aliasName, targetInterpPtr, targetNamePtr, objcPtr,
  *
  * TclPreventAliasLoop --
  *
- *	When defining an alias or renaming a command, prevent an alias
- *	loop from being formed.
+ *	When defining an alias or renaming a command, prevent an alias loop
+ *	from being formed.
  *
  * Results:
  *	A standard Tcl object result.
  *
  * Side effects:
- *	If TCL_ERROR is returned, the function also stores an error message
- *	in the interpreter's result object.
+ *	If TCL_ERROR is returned, the function also stores an error message in
+ *	the interpreter's result object.
  *
  * NOTE:
- *	This function is public internal (instead of being static to
- *	this file) because it is also used from TclRenameCommand.
+ *	This function is public internal (instead of being static to this
+ *	file) because it is also used from TclRenameCommand.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclPreventAliasLoop(interp, cmdInterp, cmd)
-    Tcl_Interp *interp;			/* Interp in which to report errors. */
-    Tcl_Interp *cmdInterp;		/* Interp in which the command is
-                                         * being defined. */
-    Tcl_Command cmd;                    /* Tcl command we are attempting
-                                         * to define. */
+TclPreventAliasLoop(
+    Tcl_Interp *interp,		/* Interp in which to report errors. */
+    Tcl_Interp *cmdInterp,	/* Interp in which the command is being
+				 * defined. */
+    Tcl_Command cmd)		/* Tcl command we are attempting to define. */
 {
     Command *cmdPtr = (Command *) cmd;
     Alias *aliasPtr, *nextAliasPtr;
@@ -1065,18 +1340,18 @@ TclPreventAliasLoop(interp, cmdInterp, cmd)
     Command *aliasCmdPtr;
 
     /*
-     * If we are not creating or renaming an alias, then it is
-     * always OK to create or rename the command.
+     * If we are not creating or renaming an alias, then it is always OK to
+     * create or rename the command.
      */
-    
+
     if (cmdPtr->objProc != AliasObjCmd) {
-        return TCL_OK;
+	return TCL_OK;
     }
 
     /*
-     * OK, we are dealing with an alias, so traverse the chain of aliases.
-     * If we encounter the alias we are defining (or renaming to) any in
-     * the chain then we have a loop.
+     * OK, we are dealing with an alias, so traverse the chain of aliases. If
+     * we encounter the alias we are defining (or renaming to) any in the
+     * chain then we have a loop.
      */
 
     aliasPtr = (Alias *) cmdPtr->objClientData;
@@ -1084,9 +1359,9 @@ TclPreventAliasLoop(interp, cmdInterp, cmd)
     while (1) {
 	Tcl_Obj *cmdNamePtr;
 
-        /*
-         * If the target of the next alias in the chain is the same as
-         * the source alias, we have a loop.
+	/*
+	 * If the target of the next alias in the chain is the same as the
+	 * source alias, we have a loop.
 	 */
 
 	if (Tcl_InterpDeleted(nextAliasPtr->targetInterp)) {
@@ -1095,39 +1370,37 @@ TclPreventAliasLoop(interp, cmdInterp, cmd)
 	     * [Bug #641195]
 	     */
 
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "cannot define or rename alias \"",
-		    Tcl_GetString(aliasPtr->namePtr),
-		    "\": interpreter deleted", (char *) NULL);
+	    Tcl_AppendResult(interp, "cannot define or rename alias \"",
+		    Tcl_GetCommandName(cmdInterp, cmd),
+		    "\": interpreter deleted", NULL);
 	    return TCL_ERROR;
 	}
 	cmdNamePtr = nextAliasPtr->objPtr;
 	aliasCmd = Tcl_FindCommand(nextAliasPtr->targetInterp,
-                Tcl_GetString(cmdNamePtr),
+		TclGetString(cmdNamePtr),
 		Tcl_GetGlobalNamespace(nextAliasPtr->targetInterp),
 		/*flags*/ 0);
-        if (aliasCmd == (Tcl_Command) NULL) {
-            return TCL_OK;
-        }
+	if (aliasCmd == NULL) {
+	    return TCL_OK;
+	}
 	aliasCmdPtr = (Command *) aliasCmd;
-        if (aliasCmdPtr == cmdPtr) {
-            Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "cannot define or rename alias \"",
-		    Tcl_GetString(aliasPtr->namePtr),
-		    "\": would create a loop", (char *) NULL);
-            return TCL_ERROR;
-        }
-
-        /*
+	if (aliasCmdPtr == cmdPtr) {
+	    Tcl_AppendResult(interp, "cannot define or rename alias \"",
+		    Tcl_GetCommandName(cmdInterp, cmd),
+		    "\": would create a loop", NULL);
+	    return TCL_ERROR;
+	}
+
+	/*
 	 * Otherwise, follow the chain one step further. See if the target
-         * command is an alias - if so, follow the loop to its target
-         * command. Otherwise we do not have a loop.
+	 * command is an alias - if so, follow the loop to its target command.
+	 * Otherwise we do not have a loop.
 	 */
 
-        if (aliasCmdPtr->objProc != AliasObjCmd) {
-            return TCL_OK;
-        }
-        nextAliasPtr = (Alias *) aliasCmdPtr->objClientData;
+	if (aliasCmdPtr->objProc != AliasObjCmd) {
+	    return TCL_OK;
+	}
+	nextAliasPtr = (Alias *) aliasCmdPtr->objClientData;
     }
 
     /* NOTREACHED */
@@ -1144,24 +1417,23 @@ TclPreventAliasLoop(interp, cmdInterp, cmd)
  *	A standard Tcl result.
  *
  * Side effects:
- *	An alias command is created and entered into the alias table
- *	for the slave interpreter.
+ *	An alias command is created and entered into the alias table for the
+ *	slave interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr,
-	objc, objv)
-    Tcl_Interp *interp;		/* Interp for error reporting. */
-    Tcl_Interp *slaveInterp;	/* Interp where alias cmd will live or from
+AliasCreate(
+    Tcl_Interp *interp,		/* Interp for error reporting. */
+    Tcl_Interp *slaveInterp,	/* Interp where alias cmd will live or from
 				 * which alias will be deleted. */
-    Tcl_Interp *masterInterp;	/* Interp in which target command will be
+    Tcl_Interp *masterInterp,	/* Interp in which target command will be
 				 * invoked. */
-    Tcl_Obj *namePtr;		/* Name of alias cmd. */
-    Tcl_Obj *targetNamePtr;	/* Name of target cmd. */
-    int objc;			/* Additional arguments to store */
-    Tcl_Obj *CONST objv[];	/* with alias. */
+    Tcl_Obj *namePtr,		/* Name of alias cmd. */
+    Tcl_Obj *targetNamePtr,	/* Name of target cmd. */
+    int objc,			/* Additional arguments to store */
+    Tcl_Obj *const objv[])	/* with alias. */
 {
     Alias *aliasPtr;
     Tcl_HashEntry *hPtr;
@@ -1169,13 +1441,13 @@ AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr,
     Slave *slavePtr;
     Master *masterPtr;
     Tcl_Obj **prefv;
-    int new, i;
+    int isNew, i;
 
-    aliasPtr = (Alias *) ckalloc((unsigned) (sizeof(Alias) 
-            + objc * sizeof(Tcl_Obj *)));
-    aliasPtr->namePtr		= namePtr;
-    Tcl_IncrRefCount(aliasPtr->namePtr);
-    aliasPtr->targetInterp	= masterInterp;
+    aliasPtr = (Alias *) ckalloc((unsigned) (sizeof(Alias)
+	    + objc * sizeof(Tcl_Obj *)));
+    aliasPtr->token = namePtr;
+    Tcl_IncrRefCount(aliasPtr->token);
+    aliasPtr->targetInterp = masterInterp;
 
     aliasPtr->objc = objc + 1;
     prefv = &aliasPtr->objPtr;
@@ -1191,26 +1463,26 @@ AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr,
     Tcl_Preserve(masterInterp);
 
     aliasPtr->slaveCmd = Tcl_CreateObjCommand(slaveInterp,
-	    Tcl_GetString(namePtr), AliasObjCmd, (ClientData) aliasPtr,
+	    TclGetString(namePtr), AliasObjCmd, aliasPtr,
 	    AliasObjCmdDeleteProc);
 
     if (TclPreventAliasLoop(interp, slaveInterp,
 	    aliasPtr->slaveCmd) != TCL_OK) {
 	/*
-	 * Found an alias loop!	 The last call to Tcl_CreateObjCommand made
-	 * the alias point to itself.  Delete the command and its alias
-	 * record.  Be careful to wipe out its client data first, so the
-	 * command doesn't try to delete itself.
+	 * Found an alias loop! The last call to Tcl_CreateObjCommand made the
+	 * alias point to itself. Delete the command and its alias record. Be
+	 * careful to wipe out its client data first, so the command doesn't
+	 * try to delete itself.
 	 */
 
 	Command *cmdPtr;
-	
-	Tcl_DecrRefCount(aliasPtr->namePtr);
+
+	Tcl_DecrRefCount(aliasPtr->token);
 	Tcl_DecrRefCount(targetNamePtr);
 	for (i = 0; i < objc; i++) {
 	    Tcl_DecrRefCount(objv[i]);
 	}
-	
+
 	cmdPtr = (Command *) aliasPtr->slaveCmd;
 	cmdPtr->clientData = NULL;
 	cmdPtr->deleteProc = NULL;
@@ -1229,28 +1501,42 @@ AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr,
     }
 
     /*
-     * Make an entry in the alias table. If it already exists delete
-     * the alias command. Then retry.
+     * Make an entry in the alias table. If it already exists, retry.
      */
 
     slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave;
     while (1) {
-	Alias *oldAliasPtr;
+	Tcl_Obj *newToken;
 	char *string;
-	
-	string = Tcl_GetString(namePtr);
-	hPtr = Tcl_CreateHashEntry(&slavePtr->aliasTable, string, &new);
-	if (new != 0) {
+
+	string = TclGetString(aliasPtr->token);
+	hPtr = Tcl_CreateHashEntry(&slavePtr->aliasTable, string, &isNew);
+	if (isNew != 0) {
 	    break;
 	}
 
-	oldAliasPtr = (Alias *) Tcl_GetHashValue(hPtr);
-	Tcl_DeleteCommandFromToken(slaveInterp, oldAliasPtr->slaveCmd);
+	/*
+	 * The alias name cannot be used as unique token, it is already taken.
+	 * We can produce a unique token by prepending "::" repeatedly. This
+	 * algorithm is a stop-gap to try to maintain the command name as
+	 * token for most use cases, fearful of possible backwards compat
+	 * problems. A better algorithm would produce unique tokens that need
+	 * not be related to the command name.
+	 *
+	 * ATTENTION: the tests in interp.test and possibly safe.test depend
+	 * on the precise definition of these tokens.
+	 */
+
+	TclNewLiteralStringObj(newToken, "::");
+	Tcl_AppendObjToObj(newToken, aliasPtr->token);
+	Tcl_DecrRefCount(aliasPtr->token);
+	aliasPtr->token = newToken;
+	Tcl_IncrRefCount(aliasPtr->token);
     }
 
     aliasPtr->aliasEntryPtr = hPtr;
-    Tcl_SetHashValue(hPtr, (ClientData) aliasPtr);
-    
+    Tcl_SetHashValue(hPtr, aliasPtr);
+
     /*
      * Create the new command. We must do it after deleting any old command,
      * because the alias may be pointing at a renamed alias, as in:
@@ -1264,19 +1550,16 @@ AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr,
     targetPtr->slaveCmd = aliasPtr->slaveCmd;
     targetPtr->slaveInterp = slaveInterp;
 
-    Tcl_MutexLock(&cntMutex);
-    masterPtr = &((InterpInfo *) ((Interp *) masterInterp)->interpInfo)->master;
-    do {
-        hPtr = Tcl_CreateHashEntry(&masterPtr->targetTable,
-                (char *) aliasCounter, &new);
-	aliasCounter++;
-    } while (new == 0);
-    Tcl_MutexUnlock(&cntMutex);
-
-    Tcl_SetHashValue(hPtr, (ClientData) targetPtr);
-    aliasPtr->targetEntryPtr = hPtr;
+    masterPtr = &((InterpInfo *) ((Interp*) masterInterp)->interpInfo)->master;
+    targetPtr->nextPtr = masterPtr->targetsPtr;
+    targetPtr->prevPtr = NULL;
+    if (masterPtr->targetsPtr != NULL) {
+	masterPtr->targetsPtr->prevPtr = targetPtr;
+    }
+    masterPtr->targetsPtr = targetPtr;
+    aliasPtr->targetPtr = targetPtr;
 
-    Tcl_SetObjResult(interp, namePtr);
+    Tcl_SetObjResult(interp, aliasPtr->token);
 
     Tcl_Release(slaveInterp);
     Tcl_Release(masterInterp);
@@ -1300,10 +1583,10 @@ AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr,
  */
 
 static int
-AliasDelete(interp, slaveInterp, namePtr)
-    Tcl_Interp *interp;		/* Interpreter for result & errors. */
-    Tcl_Interp *slaveInterp;	/* Interpreter containing alias. */
-    Tcl_Obj *namePtr;		/* Name of alias to delete. */
+AliasDelete(
+    Tcl_Interp *interp,		/* Interpreter for result & errors. */
+    Tcl_Interp *slaveInterp,	/* Interpreter containing alias. */
+    Tcl_Obj *namePtr)		/* Name of alias to delete. */
 {
     Slave *slavePtr;
     Alias *aliasPtr;
@@ -1316,13 +1599,15 @@ AliasDelete(interp, slaveInterp, namePtr)
      */
 
     slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave;
-    hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, Tcl_GetString(namePtr));
+    hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, TclGetString(namePtr));
     if (hPtr == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "alias \"",
-		Tcl_GetString(namePtr), "\" not found", NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "alias \"", TclGetString(namePtr),
+		"\" not found", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS",
+		TclGetString(namePtr), NULL);
+	return TCL_ERROR;
     }
-    aliasPtr = (Alias *) Tcl_GetHashValue(hPtr);
+    aliasPtr = Tcl_GetHashValue(hPtr);
     Tcl_DeleteCommandFromToken(slaveInterp, aliasPtr->slaveCmd);
     return TCL_OK;
 }
@@ -1332,10 +1617,9 @@ AliasDelete(interp, slaveInterp, namePtr)
  *
  * AliasDescribe --
  *
- *	Sets the interpreter's result object to a Tcl list describing
- *	the given alias in the given interpreter: its target command
- *	and the additional arguments to prepend to any invocation
- *	of the alias.
+ *	Sets the interpreter's result object to a Tcl list describing the
+ *	given alias in the given interpreter: its target command and the
+ *	additional arguments to prepend to any invocation of the alias.
  *
  * Results:
  *	A standard Tcl result.
@@ -1347,14 +1631,14 @@ AliasDelete(interp, slaveInterp, namePtr)
  */
 
 static int
-AliasDescribe(interp, slaveInterp, namePtr)
-    Tcl_Interp *interp;		/* Interpreter for result & errors. */
-    Tcl_Interp *slaveInterp;	/* Interpreter containing alias. */
-    Tcl_Obj *namePtr;		/* Name of alias to describe. */
+AliasDescribe(
+    Tcl_Interp *interp,		/* Interpreter for result & errors. */
+    Tcl_Interp *slaveInterp,	/* Interpreter containing alias. */
+    Tcl_Obj *namePtr)		/* Name of alias to describe. */
 {
     Slave *slavePtr;
     Tcl_HashEntry *hPtr;
-    Alias *aliasPtr;	
+    Alias *aliasPtr;
     Tcl_Obj *prefixPtr;
 
     /*
@@ -1366,9 +1650,9 @@ AliasDescribe(interp, slaveInterp, namePtr)
     slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave;
     hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, Tcl_GetString(namePtr));
     if (hPtr == NULL) {
-        return TCL_OK;
+	return TCL_OK;
     }
-    aliasPtr = (Alias *) Tcl_GetHashValue(hPtr);
+    aliasPtr = Tcl_GetHashValue(hPtr);
     prefixPtr = Tcl_NewListObj(aliasPtr->objc, &aliasPtr->objPtr);
     Tcl_SetObjResult(interp, prefixPtr);
     return TCL_OK;
@@ -1391,24 +1675,24 @@ AliasDescribe(interp, slaveInterp, namePtr)
  */
 
 static int
-AliasList(interp, slaveInterp)
-    Tcl_Interp *interp;		/* Interp for data return. */
-    Tcl_Interp *slaveInterp;	/* Interp whose aliases to compute. */
+AliasList(
+    Tcl_Interp *interp,		/* Interp for data return. */
+    Tcl_Interp *slaveInterp)	/* Interp whose aliases to compute. */
 {
     Tcl_HashEntry *entryPtr;
     Tcl_HashSearch hashSearch;
-    Tcl_Obj *resultPtr;	
+    Tcl_Obj *resultPtr = Tcl_NewObj();
     Alias *aliasPtr;
     Slave *slavePtr;
 
     slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave;
-    resultPtr = Tcl_GetObjResult(interp);
 
     entryPtr = Tcl_FirstHashEntry(&slavePtr->aliasTable, &hashSearch);
     for ( ; entryPtr != NULL; entryPtr = Tcl_NextHashEntry(&hashSearch)) {
-        aliasPtr = (Alias *) Tcl_GetHashValue(entryPtr);
-        Tcl_ListObjAppendElement(NULL, resultPtr, aliasPtr->namePtr);
+	aliasPtr = Tcl_GetHashValue(entryPtr);
+	Tcl_ListObjAppendElement(NULL, resultPtr, aliasPtr->token);
     }
+    Tcl_SetObjResult(interp, resultPtr);
     return TCL_OK;
 }
 
@@ -1417,80 +1701,120 @@ AliasList(interp, slaveInterp)
  *
  * AliasObjCmd --
  *
- *	This is the procedure that services invocations of aliases in a
- *	slave interpreter. One such command exists for each alias. When
- *	invoked, this procedure redirects the invocation to the target
- *	command in the master interpreter as designated by the Alias
- *	record associated with this command.
+ *	This is the function that services invocations of aliases in a slave
+ *	interpreter. One such command exists for each alias. When invoked,
+ *	this function redirects the invocation to the target command in the
+ *	master interpreter as designated by the Alias record associated with
+ *	this command.
  *
  * Results:
  *	A standard Tcl result.
  *
  * Side effects:
- *	Causes forwarding of the invocation; all possible side effects
- *	may occur as a result of invoking the command to which the
- *	invocation is forwarded.
+ *	Causes forwarding of the invocation; all possible side effects may
+ *	occur as a result of invoking the command to which the invocation is
+ *	forwarded.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-AliasObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Alias record. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument vector. */	
+AliasObjCmd(
+    ClientData clientData,	/* Alias record. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument vector. */
 {
 #define ALIAS_CMDV_PREALLOC 10
-    Tcl_Interp *targetInterp;	
-    Alias *aliasPtr;		
+    Alias *aliasPtr = clientData;
+    Tcl_Interp *targetInterp = aliasPtr->targetInterp;
     int result, prefc, cmdc, i;
     Tcl_Obj **prefv, **cmdv;
     Tcl_Obj *cmdArr[ALIAS_CMDV_PREALLOC];
-    aliasPtr = (Alias *) clientData;
-    targetInterp = aliasPtr->targetInterp;
+    Interp *tPtr = (Interp *) targetInterp;
+    int isRootEnsemble = (tPtr->ensembleRewrite.sourceObjs == NULL);
 
     /*
-     * Append the arguments to the command prefix and invoke the command
-     * in the target interp's global namespace.
+     * Append the arguments to the command prefix and invoke the command in
+     * the target interp's global namespace.
      */
-     
+
     prefc = aliasPtr->objc;
     prefv = &aliasPtr->objPtr;
     cmdc = prefc + objc - 1;
     if (cmdc <= ALIAS_CMDV_PREALLOC) {
 	cmdv = cmdArr;
     } else {
-	cmdv = (Tcl_Obj **) ckalloc((unsigned) (cmdc * sizeof(Tcl_Obj *)));
+	cmdv = (Tcl_Obj **) TclStackAlloc(interp, cmdc*(int)sizeof(Tcl_Obj*));
     }
 
     prefv = &aliasPtr->objPtr;
-    memcpy((VOID *) cmdv, (VOID *) prefv, 
-            (size_t) (prefc * sizeof(Tcl_Obj *)));
-    memcpy((VOID *) (cmdv+prefc), (VOID *) (objv+1), 
-	    (size_t) ((objc-1) * sizeof(Tcl_Obj *)));
+    memcpy(cmdv, prefv, (size_t) (prefc * sizeof(Tcl_Obj *)));
+    memcpy(cmdv+prefc, objv+1, (size_t) ((objc-1) * sizeof(Tcl_Obj *)));
 
     Tcl_ResetResult(targetInterp);
 
     for (i=0; i<cmdc; i++) {
 	Tcl_IncrRefCount(cmdv[i]);
     }
-    if (targetInterp != interp) {
-	Tcl_Preserve((ClientData) targetInterp);
-	result = Tcl_EvalObjv(targetInterp, cmdc, cmdv, TCL_EVAL_INVOKE);
-	TclTransferResult(targetInterp, result, interp);	
-	Tcl_Release((ClientData) targetInterp);
+
+    /*
+     * Use the ensemble rewriting machinery to ensure correct error messages:
+     * only the source command should show, not the full target prefix.
+     */
+
+    if (isRootEnsemble) {
+	tPtr->ensembleRewrite.sourceObjs = objv;
+	tPtr->ensembleRewrite.numRemovedObjs = 1;
+	tPtr->ensembleRewrite.numInsertedObjs = prefc;
     } else {
-	result = Tcl_EvalObjv(targetInterp, cmdc, cmdv, TCL_EVAL_INVOKE);
+	tPtr->ensembleRewrite.numInsertedObjs += prefc - 1;
+    }
+
+    /*
+     * Protect the target interpreter if it isn't the same as the source
+     * interpreter so that we can continue to work with it after the target
+     * command completes.
+     */
+
+    if (targetInterp != interp) {
+	Tcl_Preserve(targetInterp);
+    }
+
+    /*
+     * Execute the target command in the target interpreter.
+     */
+
+    result = Tcl_EvalObjv(targetInterp, cmdc, cmdv, TCL_EVAL_INVOKE);
+
+    /*
+     * Clean up the ensemble rewrite info if we set it in the first place.
+     */
+
+    if (isRootEnsemble) {
+	tPtr->ensembleRewrite.sourceObjs = NULL;
+	tPtr->ensembleRewrite.numRemovedObjs = 0;
+	tPtr->ensembleRewrite.numInsertedObjs = 0;
+    }
+
+    /*
+     * If it was a cross-interpreter alias, we need to transfer the result
+     * back to the source interpreter and release the lock we previously set
+     * on the target interpreter.
+     */
+
+    if (targetInterp != interp) {
+	TclTransferResult(targetInterp, result, interp);
+	Tcl_Release(targetInterp);
     }
+
     for (i=0; i<cmdc; i++) {
 	Tcl_DecrRefCount(cmdv[i]);
     }
-
     if (cmdv != cmdArr) {
-	ckfree((char *) cmdv);
+	TclStackFree(interp, cmdv);
     }
-    return result;        
+    return result;
 #undef ALIAS_CMDV_PREALLOC
 }
 
@@ -1499,41 +1823,53 @@ AliasObjCmd(clientData, interp, objc, objv)
  *
  * AliasObjCmdDeleteProc --
  *
- *	Is invoked when an alias command is deleted in a slave. Cleans up
- *	all storage associated with this alias.
+ *	Is invoked when an alias command is deleted in a slave. Cleans up all
+ *	storage associated with this alias.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Deletes the alias record and its entry in the alias table for
- *	the interpreter.
+ *	Deletes the alias record and its entry in the alias table for the
+ *	interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-AliasObjCmdDeleteProc(clientData)
-    ClientData clientData;	/* The alias record for this alias. */
+AliasObjCmdDeleteProc(
+    ClientData clientData)	/* The alias record for this alias. */
 {
-    Alias *aliasPtr;		
-    Target *targetPtr;		
+    Alias *aliasPtr = clientData;
+    Target *targetPtr;
     int i;
     Tcl_Obj **objv;
 
-    aliasPtr = (Alias *) clientData;
-    
-    Tcl_DecrRefCount(aliasPtr->namePtr);
+    Tcl_DecrRefCount(aliasPtr->token);
     objv = &aliasPtr->objPtr;
     for (i = 0; i < aliasPtr->objc; i++) {
 	Tcl_DecrRefCount(objv[i]);
     }
     Tcl_DeleteHashEntry(aliasPtr->aliasEntryPtr);
 
-    targetPtr = (Target *) Tcl_GetHashValue(aliasPtr->targetEntryPtr);
-    ckfree((char *) targetPtr);
-    Tcl_DeleteHashEntry(aliasPtr->targetEntryPtr);
+    /*
+     * Splice the target record out of the target interpreter's master list.
+     */
+
+    targetPtr = aliasPtr->targetPtr;
+    if (targetPtr->prevPtr != NULL) {
+	targetPtr->prevPtr->nextPtr = targetPtr->nextPtr;
+    } else {
+	Master *masterPtr = &((InterpInfo *) ((Interp *)
+		aliasPtr->targetInterp)->interpInfo)->master;
+
+	masterPtr->targetsPtr = targetPtr->nextPtr;
+    }
+    if (targetPtr->nextPtr != NULL) {
+	targetPtr->nextPtr->prevPtr = targetPtr->prevPtr;
+    }
 
+    ckfree((char *) targetPtr);
     ckfree((char *) aliasPtr);
 }
 
@@ -1542,29 +1878,29 @@ AliasObjCmdDeleteProc(clientData)
  *
  * Tcl_CreateSlave --
  *
- *	Creates a slave interpreter. The slavePath argument denotes the
- *	name of the new slave relative to the current interpreter; the
- *	slave is a direct descendant of the one-before-last component of
- *	the path, e.g. it is a descendant of the current interpreter if
- *	the slavePath argument contains only one component. Optionally makes
- *	the slave interpreter safe.
+ *	Creates a slave interpreter. The slavePath argument denotes the name
+ *	of the new slave relative to the current interpreter; the slave is a
+ *	direct descendant of the one-before-last component of the path,
+ *	e.g. it is a descendant of the current interpreter if the slavePath
+ *	argument contains only one component. Optionally makes the slave
+ *	interpreter safe.
  *
  * Results:
  *	Returns the interpreter structure created, or NULL if an error
  *	occurred.
  *
  * Side effects:
- *	Creates a new interpreter and a new interpreter object command in
- *	the interpreter indicated by the slavePath argument.
+ *	Creates a new interpreter and a new interpreter object command in the
+ *	interpreter indicated by the slavePath argument.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Interp *
-Tcl_CreateSlave(interp, slavePath, isSafe)
-    Tcl_Interp *interp;		/* Interpreter to start search at. */
-    CONST char *slavePath;	/* Name of slave to create. */
-    int isSafe;			/* Should new slave be "safe" ? */
+Tcl_CreateSlave(
+    Tcl_Interp *interp,		/* Interpreter to start search at. */
+    const char *slavePath,	/* Name of slave to create. */
+    int isSafe)			/* Should new slave be "safe" ? */
 {
     Tcl_Obj *pathPtr;
     Tcl_Interp *slaveInterp;
@@ -1584,8 +1920,7 @@ Tcl_CreateSlave(interp, slavePath, isSafe)
  *	Finds a slave interpreter by its path name.
  *
  * Results:
- *	Returns a Tcl_Interp * for the named interpreter or NULL if not
- *	found.
+ *	Returns a Tcl_Interp * for the named interpreter or NULL if not found.
  *
  * Side effects:
  *	None.
@@ -1594,9 +1929,9 @@ Tcl_CreateSlave(interp, slavePath, isSafe)
  */
 
 Tcl_Interp *
-Tcl_GetSlave(interp, slavePath)
-    Tcl_Interp *interp;		/* Interpreter to start search from. */
-    CONST char *slavePath;	/* Path of slave to find. */
+Tcl_GetSlave(
+    Tcl_Interp *interp,		/* Interpreter to start search from. */
+    const char *slavePath)	/* Path of slave to find. */
 {
     Tcl_Obj *pathPtr;
     Tcl_Interp *slaveInterp;
@@ -1625,13 +1960,13 @@ Tcl_GetSlave(interp, slavePath)
  */
 
 Tcl_Interp *
-Tcl_GetMaster(interp)
-    Tcl_Interp *interp;		/* Get the master of this interpreter. */
+Tcl_GetMaster(
+    Tcl_Interp *interp)		/* Get the master of this interpreter. */
 {
     Slave *slavePtr;		/* Slave record of this interpreter. */
 
-    if (interp == (Tcl_Interp *) NULL) {
-        return NULL;
+    if (interp == NULL) {
+	return NULL;
     }
     slavePtr = &((InterpInfo *) ((Interp *) interp)->interpInfo)->slave;
     return slavePtr->masterInterp;
@@ -1643,19 +1978,17 @@ Tcl_GetMaster(interp)
  * Tcl_GetInterpPath --
  *
  *	Sets the result of the asking interpreter to a proper Tcl list
- *	containing the names of interpreters between the asking and
- *	target interpreters. The target interpreter must be either the
- *	same as the asking interpreter or one of its slaves (including
- *	recursively).
+ *	containing the names of interpreters between the asking and target
+ *	interpreters. The target interpreter must be either the same as the
+ *	asking interpreter or one of its slaves (including recursively).
  *
  * Results:
- *	TCL_OK if the target interpreter is the same as, or a descendant
- *	of, the asking interpreter; TCL_ERROR else. This way one can
- *	distinguish between the case where the asking and target interps
- *	are the same (an empty list is the result, and TCL_OK is returned)
- *	and when the target is not a descendant of the asking interpreter
- *	(in which case the Tcl result is an error message and the function
- *	returns TCL_ERROR).
+ *	TCL_OK if the target interpreter is the same as, or a descendant of,
+ *	the asking interpreter; TCL_ERROR else. This way one can distinguish
+ *	between the case where the asking and target interps are the same (an
+ *	empty list is the result, and TCL_OK is returned) and when the target
+ *	is not a descendant of the asking interpreter (in which case the Tcl
+ *	result is an error message and the function returns TCL_ERROR).
  *
  * Side effects:
  *	None.
@@ -1664,25 +1997,24 @@ Tcl_GetMaster(interp)
  */
 
 int
-Tcl_GetInterpPath(askingInterp, targetInterp)
-    Tcl_Interp *askingInterp;	/* Interpreter to start search from. */
-    Tcl_Interp *targetInterp;	/* Interpreter to find. */
+Tcl_GetInterpPath(
+    Tcl_Interp *askingInterp,	/* Interpreter to start search from. */
+    Tcl_Interp *targetInterp)	/* Interpreter to find. */
 {
     InterpInfo *iiPtr;
-    
+
     if (targetInterp == askingInterp) {
-        return TCL_OK;
+	return TCL_OK;
     }
     if (targetInterp == NULL) {
 	return TCL_ERROR;
     }
     iiPtr = (InterpInfo *) ((Interp *) targetInterp)->interpInfo;
     if (Tcl_GetInterpPath(askingInterp, iiPtr->slave.masterInterp) != TCL_OK) {
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    Tcl_AppendElement(askingInterp,
-	    Tcl_GetHashKey(&iiPtr->master.slaveTable,
-		    iiPtr->slave.slaveEntryPtr));
+    Tcl_AppendElement(askingInterp, Tcl_GetHashKey(&iiPtr->master.slaveTable,
+	    iiPtr->slave.slaveEntryPtr));
     return TCL_OK;
 }
 
@@ -1695,7 +2027,7 @@ Tcl_GetInterpPath(askingInterp, targetInterp)
  *
  * Results:
  *	Returns the slave interpreter known by that name in the calling
- *	interpreter, or NULL if no interpreter known by that name exists. 
+ *	interpreter, or NULL if no interpreter known by that name exists.
  *
  * Side effects:
  *	Assigns to the pointer variable passed in, if not NULL.
@@ -1704,41 +2036,42 @@ Tcl_GetInterpPath(askingInterp, targetInterp)
  */
 
 static Tcl_Interp *
-GetInterp(interp, pathPtr)
-    Tcl_Interp *interp;		/* Interp. to start search from. */
-    Tcl_Obj *pathPtr;		/* List object containing name of interp. to 
+GetInterp(
+    Tcl_Interp *interp,		/* Interp. to start search from. */
+    Tcl_Obj *pathPtr)		/* List object containing name of interp. to
 				 * be found. */
 {
     Tcl_HashEntry *hPtr;	/* Search element. */
     Slave *slavePtr;		/* Interim slave record. */
     Tcl_Obj **objv;
-    int objc, i;	
+    int objc, i;
     Tcl_Interp *searchInterp;	/* Interim storage for interp. to find. */
     InterpInfo *masterInfoPtr;
 
-    if (Tcl_ListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) {
+    if (TclListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) {
 	return NULL;
     }
 
     searchInterp = interp;
     for (i = 0; i < objc; i++) {
 	masterInfoPtr = (InterpInfo *) ((Interp *) searchInterp)->interpInfo;
-        hPtr = Tcl_FindHashEntry(&masterInfoPtr->master.slaveTable,
-		Tcl_GetString(objv[i]));
-        if (hPtr == NULL) {
+	hPtr = Tcl_FindHashEntry(&masterInfoPtr->master.slaveTable,
+		TclGetString(objv[i]));
+	if (hPtr == NULL) {
 	    searchInterp = NULL;
 	    break;
 	}
-        slavePtr = (Slave *) Tcl_GetHashValue(hPtr);
-        searchInterp = slavePtr->slaveInterp;
-        if (searchInterp == NULL) {
+	slavePtr = Tcl_GetHashValue(hPtr);
+	searchInterp = slavePtr->slaveInterp;
+	if (searchInterp == NULL) {
 	    break;
 	}
     }
     if (searchInterp == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"could not find interpreter \"",
-                Tcl_GetString(pathPtr), "\"", (char *) NULL);
+	Tcl_AppendResult(interp, "could not find interpreter \"",
+		TclGetString(pathPtr), "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INTERP",
+		TclGetString(pathPtr), NULL);
     }
     return searchInterp;
 }
@@ -1746,11 +2079,51 @@ GetInterp(interp, pathPtr)
 /*
  *----------------------------------------------------------------------
  *
+ * SlaveBgerror --
+ *
+ *	Helper function to set/query the background error handling command
+ *	prefix of an interp
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	When (objc == 1), slaveInterp will be set to a new background handler
+ *	of objv[0].
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SlaveBgerror(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* Interp in which limit is set/queried. */
+    int objc,			/* Set or Query. */
+    Tcl_Obj *const objv[])	/* Argument strings. */
+{
+    if (objc) {
+	int length;
+
+	if (TCL_ERROR == TclListObjLength(NULL, objv[0], &length)
+		|| (length < 1)) {
+	    Tcl_AppendResult(interp, "cmdPrefix must be list of length >= 1",
+		    NULL);
+	    return TCL_ERROR;
+	}
+	TclSetBgErrorHandler(slaveInterp, objv[0]);
+    }
+    Tcl_SetObjResult(interp, TclGetBgErrorHandler(slaveInterp));
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * SlaveCreate --
  *
- *	Helper function to do the actual work of creating a slave interp
- *	and new object command. Also optionally makes the new slave
- *	interpreter "safe".
+ *	Helper function to do the actual work of creating a slave interp and
+ *	new object command. Also optionally makes the new slave interpreter
+ *	"safe".
  *
  * Results:
  *	Returns the new Tcl_Interp * if successful or NULL if not. If failed,
@@ -1763,17 +2136,17 @@ GetInterp(interp, pathPtr)
  */
 
 static Tcl_Interp *
-SlaveCreate(interp, pathPtr, safe)
-    Tcl_Interp *interp;		/* Interp. to start search from. */
-    Tcl_Obj *pathPtr;		/* Path (name) of slave to create. */
-    int safe;			/* Should we make it "safe"? */
+SlaveCreate(
+    Tcl_Interp *interp,		/* Interp. to start search from. */
+    Tcl_Obj *pathPtr,		/* Path (name) of slave to create. */
+    int safe)			/* Should we make it "safe"? */
 {
     Tcl_Interp *masterInterp, *slaveInterp;
     Slave *slavePtr;
     InterpInfo *masterInfoPtr;
     Tcl_HashEntry *hPtr;
     char *path;
-    int new, objc;
+    int isNew, objc;
     Tcl_Obj **objv;
 
     if (Tcl_ListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) {
@@ -1781,29 +2154,29 @@ SlaveCreate(interp, pathPtr, safe)
     }
     if (objc < 2) {
 	masterInterp = interp;
-	path = Tcl_GetString(pathPtr);
+	path = TclGetString(pathPtr);
     } else {
 	Tcl_Obj *objPtr;
-	
+
 	objPtr = Tcl_NewListObj(objc - 1, objv);
 	masterInterp = GetInterp(interp, objPtr);
 	Tcl_DecrRefCount(objPtr);
 	if (masterInterp == NULL) {
 	    return NULL;
 	}
-	path = Tcl_GetString(objv[objc - 1]);
+	path = TclGetString(objv[objc - 1]);
     }
     if (safe == 0) {
 	safe = Tcl_IsSafe(masterInterp);
     }
 
     masterInfoPtr = (InterpInfo *) ((Interp *) masterInterp)->interpInfo;
-    hPtr = Tcl_CreateHashEntry(&masterInfoPtr->master.slaveTable, path, &new);
-    if (new == 0) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "interpreter named \"", path,
-		"\" already exists, cannot create", (char *) NULL);
-        return NULL;
+    hPtr = Tcl_CreateHashEntry(&masterInfoPtr->master.slaveTable, path,
+	    &isNew);
+    if (isNew == 0) {
+	Tcl_AppendResult(interp, "interpreter named \"", path,
+		"\" already exists, cannot create", NULL);
+	return NULL;
     }
 
     slaveInterp = Tcl_CreateInterp();
@@ -1812,35 +2185,66 @@ SlaveCreate(interp, pathPtr, safe)
     slavePtr->slaveEntryPtr = hPtr;
     slavePtr->slaveInterp = slaveInterp;
     slavePtr->interpCmd = Tcl_CreateObjCommand(masterInterp, path,
-            SlaveObjCmd, (ClientData) slaveInterp, SlaveObjCmdDeleteProc);
+	    SlaveObjCmd, slaveInterp, SlaveObjCmdDeleteProc);
     Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS);
-    Tcl_SetHashValue(hPtr, (ClientData) slavePtr);
+    Tcl_SetHashValue(hPtr, slavePtr);
     Tcl_SetVar(slaveInterp, "tcl_interactive", "0", TCL_GLOBAL_ONLY);
-    
+
     /*
      * Inherit the recursion limit.
      */
+
     ((Interp *) slaveInterp)->maxNestingDepth =
-	((Interp *) masterInterp)->maxNestingDepth ;
+	    ((Interp *) masterInterp)->maxNestingDepth;
 
     if (safe) {
-        if (Tcl_MakeSafe(slaveInterp) == TCL_ERROR) {
-            goto error;
-        }
+	if (Tcl_MakeSafe(slaveInterp) == TCL_ERROR) {
+	    goto error;
+	}
     } else {
-        if (Tcl_Init(slaveInterp) == TCL_ERROR) {
-            goto error;
-        }
+	if (Tcl_Init(slaveInterp) == TCL_ERROR) {
+	    goto error;
+	}
+
 	/*
-	 * This will create the "memory" command in slave interpreters
-	 * if we compiled with TCL_MEM_DEBUG, otherwise it does nothing.
+	 * This will create the "memory" command in slave interpreters if we
+	 * compiled with TCL_MEM_DEBUG, otherwise it does nothing.
 	 */
+
 	Tcl_InitMemory(slaveInterp);
     }
+
+    /*
+     * Inherit the TIP#143 limits.
+     */
+
+    InheritLimitsFromMaster(slaveInterp, masterInterp);
+
+    /*
+     * The [clock] command presents a safe API, but uses unsafe features in
+     * its implementation. This means it has to be implemented in safe interps
+     * as an alias to a version in the (trusted) master.
+     */
+
+    if (safe) {
+	Tcl_Obj *clockObj;
+	int status;
+
+	TclNewLiteralStringObj(clockObj, "clock");
+	Tcl_IncrRefCount(clockObj);
+	status = AliasCreate(interp, slaveInterp, masterInterp, clockObj,
+		clockObj, 0, NULL);
+	Tcl_DecrRefCount(clockObj);
+	if (status != TCL_OK) {
+	    goto error2;
+	}
+    }
+
     return slaveInterp;
 
-    error:
+  error:
     TclTransferResult(slaveInterp, TCL_ERROR, interp);
+  error2:
     Tcl_DeleteInterp(slaveInterp);
 
     return NULL;
@@ -1851,8 +2255,8 @@ SlaveCreate(interp, pathPtr, safe)
  *
  * SlaveObjCmd --
  *
- *	Command to manipulate an interpreter, e.g. to send commands to it
- *	to be evaluated. One such command exists for each slave interpreter.
+ *	Command to manipulate an interpreter, e.g. to send commands to it to
+ *	be evaluated. One such command exists for each slave interpreter.
  *
  * Results:
  *	A standard Tcl result.
@@ -1864,33 +2268,32 @@ SlaveCreate(interp, pathPtr, safe)
  */
 
 static int
-SlaveObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Slave interpreter. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+SlaveObjCmd(
+    ClientData clientData,	/* Slave interpreter. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Tcl_Interp *slaveInterp;
+    Tcl_Interp *slaveInterp = clientData;
     int index;
-    static CONST char *options[] = {
-        "alias",	"aliases",	"eval",		"expose",
-        "hide",		"hidden",	"issafe",	"invokehidden",
-        "marktrusted",	"recursionlimit", NULL
+    static const char *options[] = {
+	"alias",	"aliases",	"bgerror",	"debug",	"eval",
+	"expose",	"hide",		"hidden",	"issafe",
+	"invokehidden",	"limit",	"marktrusted",	"recursionlimit", NULL
     };
     enum options {
-	OPT_ALIAS,	OPT_ALIASES,	OPT_EVAL,	OPT_EXPOSE,
-	OPT_HIDE,	OPT_HIDDEN,	OPT_ISSAFE,	OPT_INVOKEHIDDEN,
-	OPT_MARKTRUSTED, OPT_RECLIMIT
+	OPT_ALIAS,	OPT_ALIASES,	OPT_BGERROR,	OPT_DEBUG,	OPT_EVAL,
+	OPT_EXPOSE,	OPT_HIDE,	OPT_HIDDEN,	OPT_ISSAFE,
+	OPT_INVOKEHIDDEN, OPT_LIMIT,	OPT_MARKTRUSTED, OPT_RECLIMIT
     };
-    
-    slaveInterp = (Tcl_Interp *) clientData;
+
     if (slaveInterp == NULL) {
-	panic("SlaveObjCmd: interpreter has been deleted");
+	Tcl_Panic("SlaveObjCmd: interpreter has been deleted");
     }
 
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?");
+	return TCL_ERROR;
     }
     if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0,
 	    &index) != TCL_OK) {
@@ -1898,114 +2301,152 @@ SlaveObjCmd(clientData, interp, objc, objv)
     }
 
     switch ((enum options) index) {
-	case OPT_ALIAS: {
-	    if (objc > 2) {
-		if (objc == 3) {
-		    return AliasDescribe(interp, slaveInterp, objv[2]);
-		}
-		if (Tcl_GetString(objv[3])[0] == '\0') {
-		    if (objc == 4) {
-			return AliasDelete(interp, slaveInterp, objv[2]);
-		    }
-		} else {
-		    return AliasCreate(interp, slaveInterp, interp, objv[2],
-			    objv[3], objc - 4, objv + 4);
+    case OPT_ALIAS:
+	if (objc > 2) {
+	    if (objc == 3) {
+		return AliasDescribe(interp, slaveInterp, objv[2]);
+	    }
+	    if (TclGetString(objv[3])[0] == '\0') {
+		if (objc == 4) {
+		    return AliasDelete(interp, slaveInterp, objv[2]);
 		}
+	    } else {
+		return AliasCreate(interp, slaveInterp, interp, objv[2],
+			objv[3], objc - 4, objv + 4);
 	    }
-	    Tcl_WrongNumArgs(interp, 2, objv,
-		    "aliasName ?targetName? ?args..?");
-            return TCL_ERROR;
 	}
-	case OPT_ALIASES: {
-	    if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, (char *) NULL);
-		return TCL_ERROR;
-	    }
-	    return AliasList(interp, slaveInterp);
+	Tcl_WrongNumArgs(interp, 2, objv, "aliasName ?targetName? ?args..?");
+	return TCL_ERROR;
+    case OPT_ALIASES:
+	if (objc != 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
 	}
-	case OPT_EVAL: {
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "arg ?arg ...?");
-		return TCL_ERROR;
-	    }
-	    return SlaveEval(interp, slaveInterp, objc - 2, objv + 2);
+	return AliasList(interp, slaveInterp);
+    case OPT_BGERROR:
+	if (objc != 2 && objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?cmdPrefix?");
+	    return TCL_ERROR;
 	}
-        case OPT_EXPOSE: {
-	    if ((objc < 3) || (objc > 4)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "hiddenCmdName ?cmdName?");
-		return TCL_ERROR;
-	    }
-            return SlaveExpose(interp, slaveInterp, objc - 2, objv + 2);
+	return SlaveBgerror(interp, slaveInterp, objc - 2, objv + 2);
+    case OPT_DEBUG:
+	/*
+	 * TIP #378 *
+	 * Currently only -frame supported, otherwise ?-option ?value? ...?
+	 */
+	if (objc > 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?-frame ?bool??");
+	    return TCL_ERROR;
 	}
-	case OPT_HIDE: {
-	    if ((objc < 3) || (objc > 4)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "cmdName ?hiddenCmdName?");
-		return TCL_ERROR;
-	    }
-            return SlaveHide(interp, slaveInterp, objc - 2, objv + 2);
+	return SlaveDebugCmd(interp, slaveInterp, objc - 2, objv + 2);
+    case OPT_EVAL:
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arg ?arg ...?");
+	    return TCL_ERROR;
 	}
-        case OPT_HIDDEN: {
-	    if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-            return SlaveHidden(interp, slaveInterp);
+	return SlaveEval(interp, slaveInterp, objc - 2, objv + 2);
+    case OPT_EXPOSE:
+	if ((objc < 3) || (objc > 4)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "hiddenCmdName ?cmdName?");
+	    return TCL_ERROR;
+	}
+	return SlaveExpose(interp, slaveInterp, objc - 2, objv + 2);
+    case OPT_HIDE:
+	if ((objc < 3) || (objc > 4)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "cmdName ?hiddenCmdName?");
+	    return TCL_ERROR;
+	}
+	return SlaveHide(interp, slaveInterp, objc - 2, objv + 2);
+    case OPT_HIDDEN:
+	if (objc != 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
+	}
+	return SlaveHidden(interp, slaveInterp);
+    case OPT_ISSAFE:
+	if (objc != 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
 	}
-        case OPT_ISSAFE: {
-	    if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, (char *) NULL);
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_IsSafe(slaveInterp)));
+	return TCL_OK;
+    case OPT_INVOKEHIDDEN: {
+	int i, index;
+	const char *namespaceName;
+	static const char *hiddenOptions[] = {
+	    "-global",	"-namespace",	"--", NULL
+	};
+	enum hiddenOption {
+	    OPT_GLOBAL,	OPT_NAMESPACE,	OPT_LAST
+	};
+
+	namespaceName = NULL;
+	for (i = 2; i < objc; i++) {
+	    if (TclGetString(objv[i])[0] != '-') {
+		break;
+	    }
+	    if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions, "option",
+		    0, &index) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_IsSafe(slaveInterp));
-	    return TCL_OK;
-	}
-        case OPT_INVOKEHIDDEN: {
-	    int global, i, index;
-	    static CONST char *hiddenOptions[] = {
-		"-global",	"--",		NULL
-	    };
-	    enum hiddenOption {
-		OPT_GLOBAL,	OPT_LAST
-	    };
-	    global = 0;
-	    for (i = 2; i < objc; i++) {
-		if (Tcl_GetString(objv[i])[0] != '-') {
+	    if (index == OPT_GLOBAL) {
+		namespaceName = "::";
+	    } else if (index == OPT_NAMESPACE) {
+		if (++i == objc) { /* There must be more arguments. */
 		    break;
-		}
-		if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions,
-			"option", 0, &index) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-		if (index == OPT_GLOBAL) {
-		    global = 1;
 		} else {
-		    i++;
-		    break;
+		    namespaceName = TclGetString(objv[i]);
 		}
+	    } else {
+		i++;
+		break;
 	    }
-	    if (objc - i < 1) {
-		Tcl_WrongNumArgs(interp, 2, objv,
-			"?-global? ?--? cmd ?arg ..?");
-		return TCL_ERROR;
-	    }
-	    return SlaveInvokeHidden(interp, slaveInterp, global, objc - i,
-		    objv + i);
 	}
-	case OPT_MARKTRUSTED: {
-	    if (objc != 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-            return SlaveMarkTrusted(interp, slaveInterp);
+	if (objc - i < 1) {
+	    Tcl_WrongNumArgs(interp, 2, objv,
+		    "?-namespace ns? ?-global? ?--? cmd ?arg ..?");
+	    return TCL_ERROR;
 	}
-	case OPT_RECLIMIT: {
-	    if (objc != 2 && objc != 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "?newlimit?");
-		return TCL_ERROR;
-	    }
-	    return SlaveRecursionLimit(interp, slaveInterp, objc - 2, objv + 2);
+	return SlaveInvokeHidden(interp, slaveInterp, namespaceName,
+		objc - i, objv + i);
+    }
+    case OPT_LIMIT: {
+	static const char *limitTypes[] = {
+	    "commands", "time", NULL
+	};
+	enum LimitTypes {
+	    LIMIT_TYPE_COMMANDS, LIMIT_TYPE_TIME
+	};
+	int limitType;
+
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "limitType ?options?");
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetIndexFromObj(interp, objv[2], limitTypes, "limit type", 0,
+		&limitType) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch ((enum LimitTypes) limitType) {
+	case LIMIT_TYPE_COMMANDS:
+	    return SlaveCommandLimitCmd(interp, slaveInterp, 3, objc,objv);
+	case LIMIT_TYPE_TIME:
+	    return SlaveTimeLimitCmd(interp, slaveInterp, 3, objc, objv);
 	}
     }
+    case OPT_MARKTRUSTED:
+	if (objc != 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
+	}
+	return SlaveMarkTrusted(interp, slaveInterp);
+    case OPT_RECLIMIT:
+	if (objc != 2 && objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?newlimit?");
+	    return TCL_ERROR;
+	}
+	return SlaveRecursionLimit(interp, slaveInterp, objc - 2, objv + 2);
+    }
 
     return TCL_ERROR;
 }
@@ -2023,20 +2464,20 @@ SlaveObjCmd(clientData, interp, objc, objv)
  *	None.
  *
  * Side effects:
- *	Cleans up all state associated with the slave interpreter and
- *	destroys the slave interpreter.
+ *	Cleans up all state associated with the slave interpreter and destroys
+ *	the slave interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-SlaveObjCmdDeleteProc(clientData)
-    ClientData clientData;		/* The SlaveRecord for the command. */
+SlaveObjCmdDeleteProc(
+    ClientData clientData)	/* The SlaveRecord for the command. */
 {
-    Slave *slavePtr;			/* Interim storage for Slave record. */
-    Tcl_Interp *slaveInterp;		/* And for a slave interp. */
+    Slave *slavePtr;		/* Interim storage for Slave record. */
+    Tcl_Interp *slaveInterp = clientData;
+				/* And for a slave interp. */
 
-    slaveInterp = (Tcl_Interp *) clientData;
     slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave;
 
     /*
@@ -2046,9 +2487,9 @@ SlaveObjCmdDeleteProc(clientData)
     Tcl_DeleteHashEntry(slavePtr->slaveEntryPtr);
 
     /*
-     * Set to NULL so that when the InterpInfo is cleaned up in the slave
-     * it does not try to delete the command causing all sorts of grief.
-     * See SlaveRecordDeleteProc().
+     * Set to NULL so that when the InterpInfo is cleaned up in the slave it
+     * does not try to delete the command causing all sorts of grief. See
+     * SlaveRecordDeleteProc().
      */
 
     slavePtr->interpCmd = NULL;
@@ -2061,6 +2502,75 @@ SlaveObjCmdDeleteProc(clientData)
 /*
  *----------------------------------------------------------------------
  *
+ * SlaveDebugCmd -- TIP #378
+ *
+ *	Helper function to handle 'debug' command in a slave interpreter.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	May modify INTERP_DEBUG flag in the slave.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SlaveDebugCmd(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* The slave interpreter in which command
+				 * will be evaluated. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    static const char *debugTypes[] = {
+	"-frame", NULL
+    };
+    enum DebugTypes {
+	DEBUG_TYPE_FRAME
+    };
+    int debugType;
+    Interp *iPtr;
+    Tcl_Obj *resultPtr;
+
+    iPtr = (Interp *) slaveInterp;
+    if (objc == 0) {
+	resultPtr = Tcl_NewObj();
+	Tcl_ListObjAppendElement(NULL, resultPtr,
+		Tcl_NewStringObj("-frame", -1));
+	Tcl_ListObjAppendElement(NULL, resultPtr,
+		Tcl_NewBooleanObj(iPtr->flags & INTERP_DEBUG_FRAME));
+	Tcl_SetObjResult(interp, resultPtr);
+    } else {
+	if (Tcl_GetIndexFromObj(interp, objv[0], debugTypes,
+			"debug option", 0, &debugType) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (debugType == DEBUG_TYPE_FRAME) {
+	    if (objc == 2) { /* set */
+		if (Tcl_GetBooleanFromObj(interp, objv[1], &debugType)
+			!= TCL_OK) {
+		    return TCL_ERROR;
+		}
+		/*
+		 * Quietly ignore attempts to disable interp debugging.
+		 * This is a one-way switch as frame debug info is maintained
+		 * in a stack that must be consistent once turned on.
+		 */
+		if (debugType) {
+		    iPtr->flags |= INTERP_DEBUG_FRAME;
+		}
+	    }
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewBooleanObj(iPtr->flags & INTERP_DEBUG_FRAME));
+	}
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * SlaveEval --
  *
  *	Helper function to evaluate a command in a slave interpreter.
@@ -2075,30 +2585,30 @@ SlaveObjCmdDeleteProc(clientData)
  */
 
 static int
-SlaveEval(interp, slaveInterp, objc, objv)
-    Tcl_Interp *interp;		/* Interp for error return. */
-    Tcl_Interp *slaveInterp;	/* The slave interpreter in which command
+SlaveEval(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* The slave interpreter in which command
 				 * will be evaluated. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int result;
     Tcl_Obj *objPtr;
-    
-    Tcl_Preserve((ClientData) slaveInterp);
+
+    Tcl_Preserve(slaveInterp);
     Tcl_AllowExceptions(slaveInterp);
 
     if (objc == 1) {
-#ifndef TCL_TIP280
-	result = Tcl_EvalObjEx(slaveInterp, objv[0], 0);
-#else
-        /* TIP #280 : Make actual argument location available to eval'd script */
-        Interp* iPtr      = (Interp*) interp;
+	/*
+	 * TIP #280: Make actual argument location available to eval'd script.
+	 */
+
+        Interp *iPtr = (Interp *) interp;
 	CmdFrame* invoker = iPtr->cmdFramePtr;
 	int word          = 0;
+
 	TclArgumentGet (interp, objv[0], &invoker, &word);
 	result = TclEvalObjEx(slaveInterp, objv[0], 0, invoker, word);
-#endif
     } else {
 	objPtr = Tcl_ConcatObj(objc, objv);
 	Tcl_IncrRefCount(objPtr);
@@ -2107,7 +2617,7 @@ SlaveEval(interp, slaveInterp, objc, objv)
     }
     TclTransferResult(slaveInterp, result, interp);
 
-    Tcl_Release((ClientData) slaveInterp);
+    Tcl_Release(slaveInterp);
     return result;
 }
 
@@ -2122,30 +2632,30 @@ SlaveEval(interp, slaveInterp, objc, objv)
  *	A standard Tcl result.
  *
  * Side effects:
- *	After this call scripts in the slave will be able to invoke
- *	the newly exposed command.
+ *	After this call scripts in the slave will be able to invoke the newly
+ *	exposed command.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SlaveExpose(interp, slaveInterp, objc, objv)
-    Tcl_Interp *interp;		/* Interp for error return. */
-    Tcl_Interp	*slaveInterp;	/* Interp in which command will be exposed. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument strings. */
+SlaveExpose(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* Interp in which command will be exposed. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument strings. */
 {
     char *name;
-    
+
     if (Tcl_IsSafe(interp)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
 		"permission denied: safe interpreter cannot expose commands",
-		(char *) NULL);
+		-1));
 	return TCL_ERROR;
     }
 
-    name = Tcl_GetString(objv[(objc == 1) ? 0 : 1]);
-    if (Tcl_ExposeCommand(slaveInterp, Tcl_GetString(objv[0]),
+    name = TclGetString(objv[(objc == 1) ? 0 : 1]);
+    if (Tcl_ExposeCommand(slaveInterp, TclGetString(objv[0]),
 	    name) != TCL_OK) {
 	TclTransferResult(slaveInterp, TCL_ERROR, interp);
 	return TCL_ERROR;
@@ -2164,31 +2674,29 @@ SlaveExpose(interp, slaveInterp, objc, objv)
  *	A standard Tcl result.
  *
  * Side effects:
- *      When (objc == 1), slaveInterp will be set to a new recursion
- *	limit of objv[0].
+ *	When (objc == 1), slaveInterp will be set to a new recursion limit of
+ *	objv[0].
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SlaveRecursionLimit(interp, slaveInterp, objc, objv)
-    Tcl_Interp *interp;		/* Interp for error return. */
-    Tcl_Interp	*slaveInterp;	/* Interp in which limit is set/queried. */
-    int objc;			/* Set or Query. */
-    Tcl_Obj *CONST objv[];	/* Argument strings. */
+SlaveRecursionLimit(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* Interp in which limit is set/queried. */
+    int objc,			/* Set or Query. */
+    Tcl_Obj *const objv[])	/* Argument strings. */
 {
     Interp *iPtr;
     int limit;
 
     if (objc) {
 	if (Tcl_IsSafe(interp)) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "permission denied: ",
-		    "safe interpreters cannot change recursion limit",
-		    (char *) NULL);
+	    Tcl_AppendResult(interp, "permission denied: "
+		    "safe interpreters cannot change recursion limit", NULL);
 	    return TCL_ERROR;
 	}
-	if (Tcl_GetIntFromObj(interp, objv[0], &limit) == TCL_ERROR) {
+	if (TclGetIntFromObj(interp, objv[0], &limit) == TCL_ERROR) {
 	    return TCL_ERROR;
 	}
 	if (limit <= 0) {
@@ -2204,11 +2712,11 @@ SlaveRecursionLimit(interp, slaveInterp, objc, objv)
 	    return TCL_ERROR;
 	}
 	Tcl_SetObjResult(interp, objv[0]);
-        return TCL_OK;
+	return TCL_OK;
     } else {
 	limit = Tcl_SetRecursionLimit(slaveInterp, 0);
 	Tcl_SetObjResult(interp, Tcl_NewIntObj(limit));
-        return TCL_OK;
+	return TCL_OK;
     }
 }
 
@@ -2223,31 +2731,30 @@ SlaveRecursionLimit(interp, slaveInterp, objc, objv)
  *	A standard Tcl result.
  *
  * Side effects:
- *	After this call scripts in the slave will no longer be able
- *	to invoke the named command.
+ *	After this call scripts in the slave will no longer be able to invoke
+ *	the named command.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SlaveHide(interp, slaveInterp, objc, objv)
-    Tcl_Interp *interp;		/* Interp for error return. */
-    Tcl_Interp	*slaveInterp;	/* Interp in which command will be exposed. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument strings. */
+SlaveHide(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* Interp in which command will be exposed. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument strings. */
 {
     char *name;
-    
+
     if (Tcl_IsSafe(interp)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
 		"permission denied: safe interpreter cannot hide commands",
-		(char *) NULL);
+		-1));
 	return TCL_ERROR;
     }
 
-    name = Tcl_GetString(objv[(objc == 1) ? 0 : 1]);
-    if (Tcl_HideCommand(slaveInterp, Tcl_GetString(objv[0]),
-	    name) != TCL_OK) {
+    name = TclGetString(objv[(objc == 1) ? 0 : 1]);
+    if (Tcl_HideCommand(slaveInterp, TclGetString(objv[0]), name) != TCL_OK) {
 	TclTransferResult(slaveInterp, TCL_ERROR, interp);
 	return TCL_ERROR;
     }
@@ -2272,26 +2779,25 @@ SlaveHide(interp, slaveInterp, objc, objv)
  */
 
 static int
-SlaveHidden(interp, slaveInterp)
-    Tcl_Interp *interp;		/* Interp for data return. */
-    Tcl_Interp *slaveInterp;	/* Interp whose hidden commands to query. */
+SlaveHidden(
+    Tcl_Interp *interp,		/* Interp for data return. */
+    Tcl_Interp *slaveInterp)	/* Interp whose hidden commands to query. */
 {
-    Tcl_Obj *listObjPtr;		/* Local object pointer. */
+    Tcl_Obj *listObjPtr = Tcl_NewObj();	/* Local object pointer. */
     Tcl_HashTable *hTblPtr;		/* For local searches. */
     Tcl_HashEntry *hPtr;		/* For local searches. */
     Tcl_HashSearch hSearch;		/* For local searches. */
-    
-    listObjPtr = Tcl_GetObjResult(interp);
+
     hTblPtr = ((Interp *) slaveInterp)->hiddenCmdTablePtr;
-    if (hTblPtr != (Tcl_HashTable *) NULL) {
+    if (hTblPtr != NULL) {
 	for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-	     hPtr != (Tcl_HashEntry *) NULL;
-	     hPtr = Tcl_NextHashEntry(&hSearch)) {
-
+		hPtr != NULL;
+		hPtr = Tcl_NextHashEntry(&hSearch)) {
 	    Tcl_ListObjAppendElement(NULL, listObjPtr,
 		    Tcl_NewStringObj(Tcl_GetHashKey(hTblPtr, hPtr), -1));
 	}
     }
+    Tcl_SetObjResult(interp, listObjPtr);
     return TCL_OK;
 }
 
@@ -2312,37 +2818,45 @@ SlaveHidden(interp, slaveInterp)
  */
 
 static int
-SlaveInvokeHidden(interp, slaveInterp, global, objc, objv)
-    Tcl_Interp *interp;		/* Interp for error return. */
-    Tcl_Interp *slaveInterp;	/* The slave interpreter in which command
-				 * will be invoked. */
-    int global;			/* Non-zero to invoke in global namespace. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+SlaveInvokeHidden(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp,	/* The slave interpreter in which command will
+				 * be invoked. */
+    const char *namespaceName,	/* The namespace to use, if any. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int result;
-    
+
     if (Tcl_IsSafe(interp)) {
-	Tcl_SetStringObj(Tcl_GetObjResult(interp),
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
 		"not allowed to invoke hidden commands from safe interpreter",
-		-1);
+		-1));
 	return TCL_ERROR;
     }
 
-    Tcl_Preserve((ClientData) slaveInterp);
+    Tcl_Preserve(slaveInterp);
     Tcl_AllowExceptions(slaveInterp);
-    
-    if (global) {
-        result = TclObjInvokeGlobal(slaveInterp, objc, objv,
-                TCL_INVOKE_HIDDEN);
+
+    if (namespaceName == NULL) {
+	result = TclObjInvoke(slaveInterp, objc, objv, TCL_INVOKE_HIDDEN);
     } else {
-        result = TclObjInvoke(slaveInterp, objc, objv, TCL_INVOKE_HIDDEN);
+	Namespace *nsPtr, *dummy1, *dummy2;
+	const char *tail;
+
+	result = TclGetNamespaceForQualName(slaveInterp, namespaceName, NULL,
+		TCL_FIND_ONLY_NS | TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG
+		| TCL_CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail);
+	if (result == TCL_OK) {
+	    result = TclObjInvokeNamespace(slaveInterp, objc, objv,
+		    (Tcl_Namespace *)nsPtr, TCL_INVOKE_HIDDEN);
+	}
     }
 
     TclTransferResult(slaveInterp, result, interp);
 
-    Tcl_Release((ClientData) slaveInterp);
-    return result;        
+    Tcl_Release(slaveInterp);
+    return result;
 }
 
 /*
@@ -2356,22 +2870,22 @@ SlaveInvokeHidden(interp, slaveInterp, global, objc, objv)
  *	A standard Tcl result.
  *
  * Side effects:
- *	After this call the hard-wired security checks in the core no
- *	longer prevent the slave from performing certain operations.
+ *	After this call the hard-wired security checks in the core no longer
+ *	prevent the slave from performing certain operations.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SlaveMarkTrusted(interp, slaveInterp)
-    Tcl_Interp *interp;		/* Interp for error return. */
-    Tcl_Interp *slaveInterp;	/* The slave interpreter which will be
-				 * marked trusted. */
+SlaveMarkTrusted(
+    Tcl_Interp *interp,		/* Interp for error return. */
+    Tcl_Interp *slaveInterp)	/* The slave interpreter which will be marked
+				 * trusted. */
 {
     if (Tcl_IsSafe(interp)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
 		"permission denied: safe interpreter cannot mark trusted",
-		(char *) NULL);
+		-1));
 	return TCL_ERROR;
     }
     ((Interp *) slaveInterp)->flags &= ~SAFE_INTERP;
@@ -2395,17 +2909,15 @@ SlaveMarkTrusted(interp, slaveInterp)
  */
 
 int
-Tcl_IsSafe(interp)
-    Tcl_Interp *interp;		/* Is this interpreter "safe" ? */
+Tcl_IsSafe(
+    Tcl_Interp *interp)		/* Is this interpreter "safe" ? */
 {
-    Interp *iPtr;
+    Interp *iPtr = (Interp *) interp;
 
-    if (interp == (Tcl_Interp *) NULL) {
-        return 0;
+    if (iPtr == NULL) {
+	return 0;
     }
-    iPtr = (Interp *) interp;
-
-    return ( (iPtr->flags) & SAFE_INTERP ) ? 1 : 0 ;
+    return (iPtr->flags & SAFE_INTERP) ? 1 : 0;
 }
 
 /*
@@ -2414,34 +2926,50 @@ Tcl_IsSafe(interp)
  * Tcl_MakeSafe --
  *
  *	Makes its argument interpreter contain only functionality that is
- *	defined to be part of Safe Tcl. Unsafe commands are hidden, the
- *	env array is unset, and the standard channels are removed.
+ *	defined to be part of Safe Tcl. Unsafe commands are hidden, the env
+ *	array is unset, and the standard channels are removed.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Hides commands in its argument interpreter, and removes settings
- *	and channels.
+ *	Hides commands in its argument interpreter, and removes settings and
+ *	channels.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_MakeSafe(interp)
-    Tcl_Interp *interp;		/* Interpreter to be made safe. */
+Tcl_MakeSafe(
+    Tcl_Interp *interp)		/* Interpreter to be made safe. */
 {
-    Tcl_Channel chan;				/* Channel to remove from
-                                                 * safe interpreter. */
+    Tcl_Channel chan;		/* Channel to remove from safe interpreter. */
     Interp *iPtr = (Interp *) interp;
+    Tcl_Interp *master = ((InterpInfo*) iPtr->interpInfo)->slave.masterInterp;
 
     TclHideUnsafeCommands(interp);
-    
+
+    if (master != NULL) {
+	/*
+	 * Alias these function implementations in the slave to those in the
+	 * master; the overall implementations are safe, but they're normally
+	 * defined by init.tcl which is not sourced by safe interpreters.
+	 * Assume these functions all work. [Bug 2895741]
+	 */
+
+	(void) Tcl_Eval(interp,
+		"namespace eval ::tcl {namespace eval mathfunc {}}");
+	(void) Tcl_CreateAlias(interp, "::tcl::mathfunc::min", master,
+		"::tcl::mathfunc::min", 0, NULL);
+	(void) Tcl_CreateAlias(interp, "::tcl::mathfunc::max", master,
+		"::tcl::mathfunc::max", 0, NULL);
+    }
+
     iPtr->flags |= SAFE_INTERP;
 
     /*
-     *  Unsetting variables : (which should not have been set 
-     *  in the first place, but...)
+     * Unsetting variables : (which should not have been set in the first
+     * place, but...)
      */
 
     /*
@@ -2450,7 +2978,7 @@ Tcl_MakeSafe(interp)
 
     Tcl_UnsetVar(interp, "env", TCL_GLOBAL_ONLY);
 
-    /* 
+    /*
      * Remove unsafe parts of tcl_platform
      */
 
@@ -2460,37 +2988,1582 @@ Tcl_MakeSafe(interp)
     Tcl_UnsetVar2(interp, "tcl_platform", "user", TCL_GLOBAL_ONLY);
 
     /*
-     * Unset path informations variables
-     * (the only one remaining is [info nameofexecutable])
+     * Unset path informations variables (the only one remaining is [info
+     * nameofexecutable])
      */
 
     Tcl_UnsetVar(interp, "tclDefaultLibrary", TCL_GLOBAL_ONLY);
     Tcl_UnsetVar(interp, "tcl_library", TCL_GLOBAL_ONLY);
     Tcl_UnsetVar(interp, "tcl_pkgPath", TCL_GLOBAL_ONLY);
-    
+
     /*
-     * Remove the standard channels from the interpreter; safe interpreters
-     * do not ordinarily have access to stdin, stdout and stderr.
+     * Remove the standard channels from the interpreter; safe interpreters do
+     * not ordinarily have access to stdin, stdout and stderr.
      *
      * NOTE: These channels are not added to the interpreter by the
      * Tcl_CreateInterp call, but may be added later, by another I/O
-     * operation. We want to ensure that the interpreter does not have
-     * these channels even if it is being made safe after being used for
-     * some time..
+     * operation. We want to ensure that the interpreter does not have these
+     * channels even if it is being made safe after being used for some time..
      */
 
     chan = Tcl_GetStdChannel(TCL_STDIN);
-    if (chan != (Tcl_Channel) NULL) {
-        Tcl_UnregisterChannel(interp, chan);
+    if (chan != NULL) {
+	Tcl_UnregisterChannel(interp, chan);
     }
     chan = Tcl_GetStdChannel(TCL_STDOUT);
-    if (chan != (Tcl_Channel) NULL) {
-        Tcl_UnregisterChannel(interp, chan);
+    if (chan != NULL) {
+	Tcl_UnregisterChannel(interp, chan);
     }
     chan = Tcl_GetStdChannel(TCL_STDERR);
-    if (chan != (Tcl_Channel) NULL) {
-        Tcl_UnregisterChannel(interp, chan);
+    if (chan != NULL) {
+	Tcl_UnregisterChannel(interp, chan);
+    }
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitExceeded --
+ *
+ *	Tests whether any limit has been exceeded in the given interpreter
+ *	(i.e. whether the interpreter is currently unable to process further
+ *	scripts).
+ *
+ * Results:
+ *	A boolean value.
+ *
+ * Side effects:
+ *	None.
+ *
+ * Notes:
+ *	If you change this function, you MUST also update TclLimitExceeded() in
+ *	tclInt.h.
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitExceeded(
+    Tcl_Interp *interp)
+{
+    register Interp *iPtr = (Interp *) interp;
+
+    return iPtr->limit.exceeded != 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitReady --
+ *
+ *	Find out whether any limit has been set on the interpreter, and if so
+ *	check whether the granularity of that limit is such that the full
+ *	limit check should be carried out.
+ *
+ * Results:
+ *	A boolean value that indicates whether to call Tcl_LimitCheck.
+ *
+ * Side effects:
+ *	Increments the limit granularity counter.
+ *
+ * Notes:
+ *	If you change this function, you MUST also update TclLimitReady() in
+ *	tclInt.h.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitReady(
+    Tcl_Interp *interp)
+{
+    register Interp *iPtr = (Interp *) interp;
+
+    if (iPtr->limit.active != 0) {
+	register int ticker = ++iPtr->limit.granularityTicker;
+
+	if ((iPtr->limit.active & TCL_LIMIT_COMMANDS) &&
+		((iPtr->limit.cmdGranularity == 1) ||
+		    (ticker % iPtr->limit.cmdGranularity == 0))) {
+	    return 1;
+	}
+	if ((iPtr->limit.active & TCL_LIMIT_TIME) &&
+		((iPtr->limit.timeGranularity == 1) ||
+		    (ticker % iPtr->limit.timeGranularity == 0))) {
+	    return 1;
+	}
+    }
+    return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitCheck --
+ *
+ *	Check all currently set limits in the interpreter (where permitted by
+ *	granularity). If a limit is exceeded, call its callbacks and, if the
+ *	limit is still exceeded after the callbacks have run, make the
+ *	interpreter generate an error that cannot be caught within the limited
+ *	interpreter.
+ *
+ * Results:
+ *	A Tcl result value (TCL_OK if no limit is exceeded, and TCL_ERROR if a
+ *	limit has been exceeded).
+ *
+ * Side effects:
+ *	May invoke system calls. May invoke other interpreters. May be
+ *	reentrant. May put the interpreter into a state where it can no longer
+ *	execute commands without outside intervention.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitCheck(
+    Tcl_Interp *interp)
+{
+    Interp *iPtr = (Interp *) interp;
+    register int ticker = iPtr->limit.granularityTicker;
+
+    if (Tcl_InterpDeleted(interp)) {
+	return TCL_OK;
+    }
+
+    if ((iPtr->limit.active & TCL_LIMIT_COMMANDS) &&
+	    ((iPtr->limit.cmdGranularity == 1) ||
+		    (ticker % iPtr->limit.cmdGranularity == 0)) &&
+	    (iPtr->limit.cmdCount < iPtr->cmdCount)) {
+	iPtr->limit.exceeded |= TCL_LIMIT_COMMANDS;
+	Tcl_Preserve(interp);
+	RunLimitHandlers(iPtr->limit.cmdHandlers, interp);
+	if (iPtr->limit.cmdCount >= iPtr->cmdCount) {
+	    iPtr->limit.exceeded &= ~TCL_LIMIT_COMMANDS;
+	} else if (iPtr->limit.exceeded & TCL_LIMIT_COMMANDS) {
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "command count limit exceeded", NULL);
+	    Tcl_Release(interp);
+	    return TCL_ERROR;
+	}
+	Tcl_Release(interp);
+    }
+
+    if ((iPtr->limit.active & TCL_LIMIT_TIME) &&
+	    ((iPtr->limit.timeGranularity == 1) ||
+		(ticker % iPtr->limit.timeGranularity == 0))) {
+	Tcl_Time now;
+
+	Tcl_GetTime(&now);
+	if (iPtr->limit.time.sec < now.sec ||
+		(iPtr->limit.time.sec == now.sec &&
+		iPtr->limit.time.usec < now.usec)) {
+	    iPtr->limit.exceeded |= TCL_LIMIT_TIME;
+	    Tcl_Preserve(interp);
+	    RunLimitHandlers(iPtr->limit.timeHandlers, interp);
+	    if (iPtr->limit.time.sec > now.sec ||
+		    (iPtr->limit.time.sec == now.sec &&
+		    iPtr->limit.time.usec >= now.usec)) {
+		iPtr->limit.exceeded &= ~TCL_LIMIT_TIME;
+	    } else if (iPtr->limit.exceeded & TCL_LIMIT_TIME) {
+		Tcl_ResetResult(interp);
+		Tcl_AppendResult(interp, "time limit exceeded", NULL);
+		Tcl_Release(interp);
+		return TCL_ERROR;
+	    }
+	    Tcl_Release(interp);
+	}
     }
 
     return TCL_OK;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * RunLimitHandlers --
+ *
+ *	Invoke all the limit handlers in a list (for a particular limit).
+ *	Note that no particular limit handler callback will be invoked
+ *	reentrantly.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Depends on the limit handlers.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+RunLimitHandlers(
+    LimitHandler *handlerPtr,
+    Tcl_Interp *interp)
+{
+    LimitHandler *nextPtr;
+    for (; handlerPtr!=NULL ; handlerPtr=nextPtr) {
+	if (handlerPtr->flags & (LIMIT_HANDLER_DELETED|LIMIT_HANDLER_ACTIVE)) {
+	    /*
+	     * Reentrant call or something seriously strange in the delete
+	     * code.
+	     */
+
+	    nextPtr = handlerPtr->nextPtr;
+	    continue;
+	}
+
+	/*
+	 * Set the ACTIVE flag while running the limit handler itself so we
+	 * cannot reentrantly call this handler and know to use the alternate
+	 * method of deletion if necessary.
+	 */
+
+	handlerPtr->flags |= LIMIT_HANDLER_ACTIVE;
+	(handlerPtr->handlerProc)(handlerPtr->clientData, interp);
+	handlerPtr->flags &= ~LIMIT_HANDLER_ACTIVE;
+
+	/*
+	 * Rediscover this value; it might have changed during the processing
+	 * of a limit handler. We have to record it here because we might
+	 * delete the structure below, and reading a value out of a deleted
+	 * structure is unsafe (even if actually legal with some
+	 * malloc()/free() implementations.)
+	 */
+
+	nextPtr = handlerPtr->nextPtr;
+
+	/*
+	 * If we deleted the current handler while we were executing it, we
+	 * will have spliced it out of the list and set the
+	 * LIMIT_HANDLER_DELETED flag.
+	 */
+
+	if (handlerPtr->flags & LIMIT_HANDLER_DELETED) {
+	    if (handlerPtr->deleteProc != NULL) {
+		(handlerPtr->deleteProc)(handlerPtr->clientData);
+	    }
+	    ckfree((char *) handlerPtr);
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitAddHandler --
+ *
+ *	Add a callback handler for a particular resource limit.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Extends the internal linked list of handlers for a limit.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitAddHandler(
+    Tcl_Interp *interp,
+    int type,
+    Tcl_LimitHandlerProc *handlerProc,
+    ClientData clientData,
+    Tcl_LimitHandlerDeleteProc *deleteProc)
+{
+    Interp *iPtr = (Interp *) interp;
+    LimitHandler *handlerPtr;
+
+    /*
+     * Convert everything into a real deletion callback.
+     */
+
+    if (deleteProc == (Tcl_LimitHandlerDeleteProc *) TCL_DYNAMIC) {
+	deleteProc = (Tcl_LimitHandlerDeleteProc *) Tcl_Free;
+    }
+    if (deleteProc == (Tcl_LimitHandlerDeleteProc *) TCL_STATIC) {
+	deleteProc = NULL;
+    }
+
+    /*
+     * Allocate a handler record.
+     */
+
+    handlerPtr = (LimitHandler *) ckalloc(sizeof(LimitHandler));
+    handlerPtr->flags = 0;
+    handlerPtr->handlerProc = handlerProc;
+    handlerPtr->clientData = clientData;
+    handlerPtr->deleteProc = deleteProc;
+    handlerPtr->prevPtr = NULL;
+
+    /*
+     * Prepend onto the front of the correct linked list.
+     */
+
+    switch (type) {
+    case TCL_LIMIT_COMMANDS:
+	handlerPtr->nextPtr = iPtr->limit.cmdHandlers;
+	if (handlerPtr->nextPtr != NULL) {
+	    handlerPtr->nextPtr->prevPtr = handlerPtr;
+	}
+	iPtr->limit.cmdHandlers = handlerPtr;
+	return;
+
+    case TCL_LIMIT_TIME:
+	handlerPtr->nextPtr = iPtr->limit.timeHandlers;
+	if (handlerPtr->nextPtr != NULL) {
+	    handlerPtr->nextPtr->prevPtr = handlerPtr;
+	}
+	iPtr->limit.timeHandlers = handlerPtr;
+	return;
+    }
+
+    Tcl_Panic("unknown type of resource limit");
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitRemoveHandler --
+ *
+ *	Remove a callback handler for a particular resource limit.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The handler is spliced out of the internal linked list for the limit,
+ *	and if not currently being invoked, deleted. Otherwise it is just
+ *	marked for deletion and removed when the limit handler has finished
+ *	executing.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitRemoveHandler(
+    Tcl_Interp *interp,
+    int type,
+    Tcl_LimitHandlerProc *handlerProc,
+    ClientData clientData)
+{
+    Interp *iPtr = (Interp *) interp;
+    LimitHandler *handlerPtr;
+
+    switch (type) {
+    case TCL_LIMIT_COMMANDS:
+	handlerPtr = iPtr->limit.cmdHandlers;
+	break;
+    case TCL_LIMIT_TIME:
+	handlerPtr = iPtr->limit.timeHandlers;
+	break;
+    default:
+	Tcl_Panic("unknown type of resource limit");
+	return;
+    }
+
+    for (; handlerPtr!=NULL ; handlerPtr=handlerPtr->nextPtr) {
+	if ((handlerPtr->handlerProc != handlerProc) ||
+		(handlerPtr->clientData != clientData)) {
+	    continue;
+	}
+
+	/*
+	 * We've found the handler to delete; mark it as doomed if not already
+	 * so marked (which shouldn't actually happen).
+	 */
+
+	if (handlerPtr->flags & LIMIT_HANDLER_DELETED) {
+	    return;
+	}
+	handlerPtr->flags |= LIMIT_HANDLER_DELETED;
+
+	/*
+	 * Splice the handler out of the doubly-linked list.
+	 */
+
+	if (handlerPtr->prevPtr == NULL) {
+	    switch (type) {
+	    case TCL_LIMIT_COMMANDS:
+		iPtr->limit.cmdHandlers = handlerPtr->nextPtr;
+		break;
+	    case TCL_LIMIT_TIME:
+		iPtr->limit.timeHandlers = handlerPtr->nextPtr;
+		break;
+	    }
+	} else {
+	    handlerPtr->prevPtr->nextPtr = handlerPtr->nextPtr;
+	}
+	if (handlerPtr->nextPtr != NULL) {
+	    handlerPtr->nextPtr->prevPtr = handlerPtr->prevPtr;
+	}
+
+	/*
+	 * If nothing is currently executing the handler, delete its client
+	 * data and the overall handler structure now. Otherwise it will all
+	 * go away when the handler returns.
+	 */
+
+	if (!(handlerPtr->flags & LIMIT_HANDLER_ACTIVE)) {
+	    if (handlerPtr->deleteProc != NULL) {
+		(handlerPtr->deleteProc)(handlerPtr->clientData);
+	    }
+	    ckfree((char *) handlerPtr);
+	}
+	return;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclLimitRemoveAllHandlers --
+ *
+ *	Remove all limit callback handlers for an interpreter. This is invoked
+ *	as part of deleting the interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Limit handlers are deleted or marked for deletion (as with
+ *	Tcl_LimitRemoveHandler).
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclLimitRemoveAllHandlers(
+    Tcl_Interp *interp)
+{
+    Interp *iPtr = (Interp *) interp;
+    LimitHandler *handlerPtr, *nextHandlerPtr;
+
+    /*
+     * Delete all command-limit handlers.
+     */
+
+    for (handlerPtr=iPtr->limit.cmdHandlers, iPtr->limit.cmdHandlers=NULL;
+	    handlerPtr!=NULL; handlerPtr=nextHandlerPtr) {
+	nextHandlerPtr = handlerPtr->nextPtr;
+
+	/*
+	 * Do not delete here if it has already been marked for deletion.
+	 */
+
+	if (handlerPtr->flags & LIMIT_HANDLER_DELETED) {
+	    continue;
+	}
+	handlerPtr->flags |= LIMIT_HANDLER_DELETED;
+	handlerPtr->prevPtr = NULL;
+	handlerPtr->nextPtr = NULL;
+
+	/*
+	 * If nothing is currently executing the handler, delete its client
+	 * data and the overall handler structure now. Otherwise it will all
+	 * go away when the handler returns.
+	 */
+
+	if (!(handlerPtr->flags & LIMIT_HANDLER_ACTIVE)) {
+	    if (handlerPtr->deleteProc != NULL) {
+		(handlerPtr->deleteProc)(handlerPtr->clientData);
+	    }
+	    ckfree((char *) handlerPtr);
+	}
+    }
+
+    /*
+     * Delete all time-limit handlers.
+     */
+
+    for (handlerPtr=iPtr->limit.timeHandlers, iPtr->limit.timeHandlers=NULL;
+	    handlerPtr!=NULL; handlerPtr=nextHandlerPtr) {
+	nextHandlerPtr = handlerPtr->nextPtr;
+
+	/*
+	 * Do not delete here if it has already been marked for deletion.
+	 */
+
+	if (handlerPtr->flags & LIMIT_HANDLER_DELETED) {
+	    continue;
+	}
+	handlerPtr->flags |= LIMIT_HANDLER_DELETED;
+	handlerPtr->prevPtr = NULL;
+	handlerPtr->nextPtr = NULL;
+
+	/*
+	 * If nothing is currently executing the handler, delete its client
+	 * data and the overall handler structure now. Otherwise it will all
+	 * go away when the handler returns.
+	 */
+
+	if (!(handlerPtr->flags & LIMIT_HANDLER_ACTIVE)) {
+	    if (handlerPtr->deleteProc != NULL) {
+		(handlerPtr->deleteProc)(handlerPtr->clientData);
+	    }
+	    ckfree((char *) handlerPtr);
+	}
+    }
+
+    /*
+     * Delete the timer callback that is used to trap limits that occur in
+     * [vwait]s...
+     */
+
+    if (iPtr->limit.timeEvent != NULL) {
+	Tcl_DeleteTimerHandler(iPtr->limit.timeEvent);
+	iPtr->limit.timeEvent = NULL;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitTypeEnabled --
+ *
+ *	Check whether a particular limit has been enabled for an interpreter.
+ *
+ * Results:
+ *	A boolean value.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitTypeEnabled(
+    Tcl_Interp *interp,
+    int type)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    return (iPtr->limit.active & type) != 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitTypeExceeded --
+ *
+ *	Check whether a particular limit has been exceeded for an interpreter.
+ *
+ * Results:
+ *	A boolean value (note that Tcl_LimitExceeded will always return
+ *	non-zero when this function returns non-zero).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitTypeExceeded(
+    Tcl_Interp *interp,
+    int type)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    return (iPtr->limit.exceeded & type) != 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitTypeSet --
+ *
+ *	Enable a particular limit for an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The limit is turned on and will be checked in future at an interval
+ *	determined by the frequency of calling of Tcl_LimitReady and the
+ *	granularity of the limit in question.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitTypeSet(
+    Tcl_Interp *interp,
+    int type)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    iPtr->limit.active |= type;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitTypeReset --
+ *
+ *	Disable a particular limit for an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The limit is disabled. If the limit was exceeded when this function
+ *	was called, the limit will no longer be exceeded afterwards and the
+ *	interpreter will be free to execute further scripts (assuming it isn't
+ *	also deleted, of course).
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitTypeReset(
+    Tcl_Interp *interp,
+    int type)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    iPtr->limit.active &= ~type;
+    iPtr->limit.exceeded &= ~type;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitSetCommands --
+ *
+ *	Set the command limit for an interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Also resets whether the command limit was exceeded. This might permit
+ *	a small amount of further execution in the interpreter even if the
+ *	limit itself is theoretically exceeded.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitSetCommands(
+    Tcl_Interp *interp,
+    int commandLimit)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    iPtr->limit.cmdCount = commandLimit;
+    iPtr->limit.exceeded &= ~TCL_LIMIT_COMMANDS;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitGetCommands --
+ *
+ *	Get the number of commands that may be executed in the interpreter
+ *	before the command-limit is reached.
+ *
+ * Results:
+ *	An upper bound on the number of commands.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitGetCommands(
+    Tcl_Interp *interp)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    return iPtr->limit.cmdCount;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitSetTime --
+ *
+ *	Set the time limit for an interpreter by copying it from the value
+ *	pointed to by the timeLimitPtr argument.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Also resets whether the time limit was exceeded. This might permit a
+ *	small amount of further execution in the interpreter even if the limit
+ *	itself is theoretically exceeded.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitSetTime(
+    Tcl_Interp *interp,
+    Tcl_Time *timeLimitPtr)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Time nextMoment;
+
+    memcpy(&iPtr->limit.time, timeLimitPtr, sizeof(Tcl_Time));
+    if (iPtr->limit.timeEvent != NULL) {
+	Tcl_DeleteTimerHandler(iPtr->limit.timeEvent);
+    }
+    nextMoment.sec = timeLimitPtr->sec;
+    nextMoment.usec = timeLimitPtr->usec+10;
+    if (nextMoment.usec >= 1000000) {
+	nextMoment.sec++;
+	nextMoment.usec -= 1000000;
+    }
+    iPtr->limit.timeEvent = TclCreateAbsoluteTimerHandler(&nextMoment,
+	    TimeLimitCallback, interp);
+    iPtr->limit.exceeded &= ~TCL_LIMIT_TIME;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TimeLimitCallback --
+ *
+ *	Callback that allows time limits to be enforced even when doing a
+ *	blocking wait for events.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May put the interpreter into a state where it can no longer execute
+ *	commands. May make callbacks into other interpreters.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+TimeLimitCallback(
+    ClientData clientData)
+{
+    Tcl_Interp *interp = clientData;
+    Interp *iPtr = clientData;
+    int code;
+
+    Tcl_Preserve(interp);
+    iPtr->limit.timeEvent = NULL;
+
+    /*
+     * Must reset the granularity ticker here to force an immediate full
+     * check. This is OK because we're swallowing the cost in the overall cost
+     * of the event loop. [Bug 2891362]
+     */
+
+    iPtr->limit.granularityTicker = 0;
+
+    code = Tcl_LimitCheck(interp);
+    if (code != TCL_OK) {
+	Tcl_AddErrorInfo(interp, "\n    (while waiting for event)");
+	TclBackgroundException(interp, code);
+    }
+    Tcl_Release(interp);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitGetTime --
+ *
+ *	Get the current time limit.
+ *
+ * Results:
+ *	The time limit (by it being copied into the variable pointed to by the
+ *	timeLimitPtr).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitGetTime(
+    Tcl_Interp *interp,
+    Tcl_Time *timeLimitPtr)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    memcpy(timeLimitPtr, &iPtr->limit.time, sizeof(Tcl_Time));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitSetGranularity --
+ *
+ *	Set the granularity divisor (which must be positive) for a particular
+ *	limit.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The granularity is updated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LimitSetGranularity(
+    Tcl_Interp *interp,
+    int type,
+    int granularity)
+{
+    Interp *iPtr = (Interp *) interp;
+    if (granularity < 1) {
+	Tcl_Panic("limit granularity must be positive");
+    }
+
+    switch (type) {
+    case TCL_LIMIT_COMMANDS:
+	iPtr->limit.cmdGranularity = granularity;
+	return;
+    case TCL_LIMIT_TIME:
+	iPtr->limit.timeGranularity = granularity;
+	return;
+    }
+    Tcl_Panic("unknown type of resource limit");
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LimitGetGranularity --
+ *
+ *	Get the granularity divisor for a particular limit.
+ *
+ * Results:
+ *	The granularity divisor for the given limit.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_LimitGetGranularity(
+    Tcl_Interp *interp,
+    int type)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    switch (type) {
+    case TCL_LIMIT_COMMANDS:
+	return iPtr->limit.cmdGranularity;
+    case TCL_LIMIT_TIME:
+	return iPtr->limit.timeGranularity;
+    }
+    Tcl_Panic("unknown type of resource limit");
+    return -1; /* NOT REACHED */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DeleteScriptLimitCallback --
+ *
+ *	Callback for when a script limit (a limit callback implemented as a
+ *	Tcl script in a master interpreter, as set up from Tcl) is deleted.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The reference to the script callback from the controlling interpreter
+ *	is removed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DeleteScriptLimitCallback(
+    ClientData clientData)
+{
+    ScriptLimitCallback *limitCBPtr = clientData;
+
+    Tcl_DecrRefCount(limitCBPtr->scriptObj);
+    if (limitCBPtr->entryPtr != NULL) {
+	Tcl_DeleteHashEntry(limitCBPtr->entryPtr);
+    }
+    ckfree((char *) limitCBPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CallScriptLimitCallback --
+ *
+ *	Invoke a script limit callback. Used to implement limit callbacks set
+ *	at the Tcl level on child interpreters.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Depends on the callback script. Errors are reported as background
+ *	errors.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+CallScriptLimitCallback(
+    ClientData clientData,
+    Tcl_Interp *interp)		/* Interpreter which failed the limit */
+{
+    ScriptLimitCallback *limitCBPtr = clientData;
+    int code;
+
+    if (Tcl_InterpDeleted(limitCBPtr->interp)) {
+	return;
+    }
+    Tcl_Preserve(limitCBPtr->interp);
+    code = Tcl_EvalObjEx(limitCBPtr->interp, limitCBPtr->scriptObj,
+	    TCL_EVAL_GLOBAL);
+    if (code != TCL_OK && !Tcl_InterpDeleted(limitCBPtr->interp)) {
+	TclBackgroundException(limitCBPtr->interp, code);
+    }
+    Tcl_Release(limitCBPtr->interp);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetScriptLimitCallback --
+ *
+ *	Install (or remove, if scriptObj is NULL) a limit callback script that
+ *	is called when the target interpreter exceeds the type of limit
+ *	specified. Each interpreter may only have one callback set on another
+ *	interpreter through this mechanism (though as many interpreters may be
+ *	limited as the programmer chooses overall).
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	A limit callback implemented as an invokation of a Tcl script in
+ *	another interpreter is either installed or removed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+SetScriptLimitCallback(
+    Tcl_Interp *interp,
+    int type,
+    Tcl_Interp *targetInterp,
+    Tcl_Obj *scriptObj)
+{
+    ScriptLimitCallback *limitCBPtr;
+    Tcl_HashEntry *hashPtr;
+    int isNew;
+    ScriptLimitCallbackKey key;
+    Interp *iPtr = (Interp *) interp;
+
+    if (interp == targetInterp) {
+	Tcl_Panic("installing limit callback to the limited interpreter");
+    }
+
+    key.interp = targetInterp;
+    key.type = type;
+
+    if (scriptObj == NULL) {
+	hashPtr = Tcl_FindHashEntry(&iPtr->limit.callbacks, (char *) &key);
+	if (hashPtr != NULL) {
+	    Tcl_LimitRemoveHandler(targetInterp, type, CallScriptLimitCallback,
+		    Tcl_GetHashValue(hashPtr));
+	}
+	return;
+    }
+
+    hashPtr = Tcl_CreateHashEntry(&iPtr->limit.callbacks, (char *) &key,
+	    &isNew);
+    if (!isNew) {
+	limitCBPtr = Tcl_GetHashValue(hashPtr);
+	limitCBPtr->entryPtr = NULL;
+	Tcl_LimitRemoveHandler(targetInterp, type, CallScriptLimitCallback,
+		limitCBPtr);
+    }
+
+    limitCBPtr = (ScriptLimitCallback *) ckalloc(sizeof(ScriptLimitCallback));
+    limitCBPtr->interp = interp;
+    limitCBPtr->scriptObj = scriptObj;
+    limitCBPtr->entryPtr = hashPtr;
+    limitCBPtr->type = type;
+    Tcl_IncrRefCount(scriptObj);
+
+    Tcl_LimitAddHandler(targetInterp, type, CallScriptLimitCallback,
+	    limitCBPtr, DeleteScriptLimitCallback);
+    Tcl_SetHashValue(hashPtr, limitCBPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclRemoveScriptLimitCallbacks --
+ *
+ *	Remove all script-implemented limit callbacks that make calls back
+ *	into the given interpreter. This invoked as part of deleting an
+ *	interpreter.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The script limit callbacks are removed or marked for later removal.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclRemoveScriptLimitCallbacks(
+    Tcl_Interp *interp)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_HashEntry *hashPtr;
+    Tcl_HashSearch search;
+    ScriptLimitCallbackKey *keyPtr;
+
+    hashPtr = Tcl_FirstHashEntry(&iPtr->limit.callbacks, &search);
+    while (hashPtr != NULL) {
+	keyPtr = (ScriptLimitCallbackKey *)
+		Tcl_GetHashKey(&iPtr->limit.callbacks, hashPtr);
+	Tcl_LimitRemoveHandler(keyPtr->interp, keyPtr->type,
+		CallScriptLimitCallback, Tcl_GetHashValue(hashPtr));
+	hashPtr = Tcl_NextHashEntry(&search);
+    }
+    Tcl_DeleteHashTable(&iPtr->limit.callbacks);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitLimitSupport --
+ *
+ *	Initialise all the parts of the interpreter relating to resource limit
+ *	management. This allows an interpreter to both have limits set upon
+ *	itself and set limits upon other interpreters.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The resource limit subsystem is initialised for the interpreter.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclInitLimitSupport(
+    Tcl_Interp *interp)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    iPtr->limit.active = 0;
+    iPtr->limit.granularityTicker = 0;
+    iPtr->limit.exceeded = 0;
+    iPtr->limit.cmdCount = 0;
+    iPtr->limit.cmdHandlers = NULL;
+    iPtr->limit.cmdGranularity = 1;
+    memset(&iPtr->limit.time, 0, sizeof(Tcl_Time));
+    iPtr->limit.timeHandlers = NULL;
+    iPtr->limit.timeEvent = NULL;
+    iPtr->limit.timeGranularity = 10;
+    Tcl_InitHashTable(&iPtr->limit.callbacks,
+	    sizeof(ScriptLimitCallbackKey)/sizeof(int));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * InheritLimitsFromMaster --
+ *
+ *	Derive the interpreter limit configuration for a slave interpreter
+ *	from the limit config for the master.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The slave interpreter limits are set so that if the master has a
+ *	limit, it may not exceed it by handing off work to slave interpreters.
+ *	Note that this does not transfer limit callbacks from the master to
+ *	the slave.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+InheritLimitsFromMaster(
+    Tcl_Interp *slaveInterp,
+    Tcl_Interp *masterInterp)
+{
+    Interp *slavePtr = (Interp *) slaveInterp;
+    Interp *masterPtr = (Interp *) masterInterp;
+
+    if (masterPtr->limit.active & TCL_LIMIT_COMMANDS) {
+	slavePtr->limit.active |= TCL_LIMIT_COMMANDS;
+	slavePtr->limit.cmdCount = 0;
+	slavePtr->limit.cmdGranularity = masterPtr->limit.cmdGranularity;
+    }
+    if (masterPtr->limit.active & TCL_LIMIT_TIME) {
+	slavePtr->limit.active |= TCL_LIMIT_TIME;
+	memcpy(&slavePtr->limit.time, &masterPtr->limit.time,
+		sizeof(Tcl_Time));
+	slavePtr->limit.timeGranularity = masterPtr->limit.timeGranularity;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SlaveCommandLimitCmd --
+ *
+ *	Implementation of the [interp limit $i commands] and [$i limit
+ *	commands] subcommands. See the interp manual page for a full
+ *	description.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Depends on the arguments.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SlaveCommandLimitCmd(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Interp *slaveInterp,	/* Interpreter being adjusted. */
+    int consumedObjc,		/* Number of args already parsed. */
+    int objc,			/* Total number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    static const char *options[] = {
+	"-command", "-granularity", "-value", NULL
+    };
+    enum Options {
+	OPT_CMD, OPT_GRAN, OPT_VAL
+    };
+    Interp *iPtr = (Interp *) interp;
+    int index;
+    ScriptLimitCallbackKey key;
+    ScriptLimitCallback *limitCBPtr;
+    Tcl_HashEntry *hPtr;
+
+    /*
+     * First, ensure that we are not reading or writing the calling
+     * interpreter's limits; it may only manipulate its children. Note that
+     * the low level API enforces this with Tcl_Panic, which we want to
+     * avoid. [Bug 3398794]
+     */
+
+    if (interp == slaveInterp) {
+	Tcl_AppendResult(interp,
+		"limits on current interpreter inaccessible", NULL);
+	return TCL_ERROR;
+    }
+
+    if (objc == consumedObjc) {
+	Tcl_Obj *dictPtr;
+
+	TclNewObj(dictPtr);
+	key.interp = slaveInterp;
+	key.type = TCL_LIMIT_COMMANDS;
+	hPtr = Tcl_FindHashEntry(&iPtr->limit.callbacks, (char *) &key);
+	if (hPtr != NULL) {
+	    limitCBPtr = Tcl_GetHashValue(hPtr);
+	    if (limitCBPtr != NULL && limitCBPtr->scriptObj != NULL) {
+		Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[0], -1),
+			limitCBPtr->scriptObj);
+	    } else {
+		goto putEmptyCommandInDict;
+	    }
+	} else {
+	    Tcl_Obj *empty;
+
+	putEmptyCommandInDict:
+	    TclNewObj(empty);
+	    Tcl_DictObjPut(NULL, dictPtr,
+		    Tcl_NewStringObj(options[0], -1), empty);
+	}
+	Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[1], -1),
+		Tcl_NewIntObj(Tcl_LimitGetGranularity(slaveInterp,
+		TCL_LIMIT_COMMANDS)));
+
+	if (Tcl_LimitTypeEnabled(slaveInterp, TCL_LIMIT_COMMANDS)) {
+	    Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[2], -1),
+		    Tcl_NewIntObj(Tcl_LimitGetCommands(slaveInterp)));
+	} else {
+	    Tcl_Obj *empty;
+
+	    TclNewObj(empty);
+	    Tcl_DictObjPut(NULL, dictPtr,
+		    Tcl_NewStringObj(options[2], -1), empty);
+	}
+	Tcl_SetObjResult(interp, dictPtr);
+	return TCL_OK;
+    } else if (objc == consumedObjc+1) {
+	if (Tcl_GetIndexFromObj(interp, objv[consumedObjc], options, "option",
+		0, &index) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch ((enum Options) index) {
+	case OPT_CMD:
+	    key.interp = slaveInterp;
+	    key.type = TCL_LIMIT_COMMANDS;
+	    hPtr = Tcl_FindHashEntry(&iPtr->limit.callbacks, (char *) &key);
+	    if (hPtr != NULL) {
+		limitCBPtr = Tcl_GetHashValue(hPtr);
+		if (limitCBPtr != NULL && limitCBPtr->scriptObj != NULL) {
+		    Tcl_SetObjResult(interp, limitCBPtr->scriptObj);
+		}
+	    }
+	    break;
+	case OPT_GRAN:
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(
+		    Tcl_LimitGetGranularity(slaveInterp, TCL_LIMIT_COMMANDS)));
+	    break;
+	case OPT_VAL:
+	    if (Tcl_LimitTypeEnabled(slaveInterp, TCL_LIMIT_COMMANDS)) {
+		Tcl_SetObjResult(interp,
+			Tcl_NewIntObj(Tcl_LimitGetCommands(slaveInterp)));
+	    }
+	    break;
+	}
+	return TCL_OK;
+    } else if ((objc-consumedObjc) & 1 /* isOdd(objc-consumedObjc) */) {
+	Tcl_WrongNumArgs(interp, consumedObjc, objv,
+		"?-option? ?value? ?-option value ...?");
+	return TCL_ERROR;
+    } else {
+	int i, scriptLen = 0, limitLen = 0;
+	Tcl_Obj *scriptObj = NULL, *granObj = NULL, *limitObj = NULL;
+	int gran = 0, limit = 0;
+
+	for (i=consumedObjc ; i<objc ; i+=2) {
+	    if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0,
+		    &index) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch ((enum Options) index) {
+	    case OPT_CMD:
+		scriptObj = objv[i+1];
+		(void) Tcl_GetStringFromObj(objv[i+1], &scriptLen);
+		break;
+	    case OPT_GRAN:
+		granObj = objv[i+1];
+		if (TclGetIntFromObj(interp, objv[i+1], &gran) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		if (gran < 1) {
+		    Tcl_AppendResult(interp, "granularity must be at "
+			    "least 1", NULL);
+		    return TCL_ERROR;
+		}
+		break;
+	    case OPT_VAL:
+		limitObj = objv[i+1];
+		(void) Tcl_GetStringFromObj(objv[i+1], &limitLen);
+		if (limitLen == 0) {
+		    break;
+		}
+		if (TclGetIntFromObj(interp, objv[i+1], &limit) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		if (limit < 0) {
+		    Tcl_AppendResult(interp, "command limit value must be at "
+			    "least 0", NULL);
+		    return TCL_ERROR;
+		}
+		break;
+	    }
+	}
+	if (scriptObj != NULL) {
+	    SetScriptLimitCallback(interp, TCL_LIMIT_COMMANDS, slaveInterp,
+		    (scriptLen > 0 ? scriptObj : NULL));
+	}
+	if (granObj != NULL) {
+	    Tcl_LimitSetGranularity(slaveInterp, TCL_LIMIT_COMMANDS, gran);
+	}
+	if (limitObj != NULL) {
+	    if (limitLen > 0) {
+		Tcl_LimitSetCommands(slaveInterp, limit);
+		Tcl_LimitTypeSet(slaveInterp, TCL_LIMIT_COMMANDS);
+	    } else {
+		Tcl_LimitTypeReset(slaveInterp, TCL_LIMIT_COMMANDS);
+	    }
+	}
+	return TCL_OK;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SlaveTimeLimitCmd --
+ *
+ *	Implementation of the [interp limit $i time] and [$i limit time]
+ *	subcommands. See the interp manual page for a full description.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	Depends on the arguments.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SlaveTimeLimitCmd(
+    Tcl_Interp *interp,			/* Current interpreter. */
+    Tcl_Interp *slaveInterp,		/* Interpreter being adjusted. */
+    int consumedObjc,			/* Number of args already parsed. */
+    int objc,				/* Total number of arguments. */
+    Tcl_Obj *const objv[])		/* Argument objects. */
+{
+    static const char *options[] = {
+	"-command", "-granularity", "-milliseconds", "-seconds", NULL
+    };
+    enum Options {
+	OPT_CMD, OPT_GRAN, OPT_MILLI, OPT_SEC
+    };
+    Interp *iPtr = (Interp *) interp;
+    int index;
+    ScriptLimitCallbackKey key;
+    ScriptLimitCallback *limitCBPtr;
+    Tcl_HashEntry *hPtr;
+
+    /*
+     * First, ensure that we are not reading or writing the calling
+     * interpreter's limits; it may only manipulate its children. Note that
+     * the low level API enforces this with Tcl_Panic, which we want to
+     * avoid. [Bug 3398794]
+     */
+
+    if (interp == slaveInterp) {
+	Tcl_AppendResult(interp,
+		"limits on current interpreter inaccessible", NULL);
+	return TCL_ERROR;
+    }
+
+    if (objc == consumedObjc) {
+	Tcl_Obj *dictPtr;
+
+	TclNewObj(dictPtr);
+	key.interp = slaveInterp;
+	key.type = TCL_LIMIT_TIME;
+	hPtr = Tcl_FindHashEntry(&iPtr->limit.callbacks, (char *) &key);
+	if (hPtr != NULL) {
+	    limitCBPtr = Tcl_GetHashValue(hPtr);
+	    if (limitCBPtr != NULL && limitCBPtr->scriptObj != NULL) {
+		Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[0], -1),
+			limitCBPtr->scriptObj);
+	    } else {
+		goto putEmptyCommandInDict;
+	    }
+	} else {
+	    Tcl_Obj *empty;
+	putEmptyCommandInDict:
+	    TclNewObj(empty);
+	    Tcl_DictObjPut(NULL, dictPtr,
+		    Tcl_NewStringObj(options[0], -1), empty);
+	}
+	Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[1], -1),
+		Tcl_NewIntObj(Tcl_LimitGetGranularity(slaveInterp,
+		TCL_LIMIT_TIME)));
+
+	if (Tcl_LimitTypeEnabled(slaveInterp, TCL_LIMIT_TIME)) {
+	    Tcl_Time limitMoment;
+
+	    Tcl_LimitGetTime(slaveInterp, &limitMoment);
+	    Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[2], -1),
+		    Tcl_NewLongObj(limitMoment.usec/1000));
+	    Tcl_DictObjPut(NULL, dictPtr, Tcl_NewStringObj(options[3], -1),
+		    Tcl_NewLongObj(limitMoment.sec));
+	} else {
+	    Tcl_Obj *empty;
+
+	    TclNewObj(empty);
+	    Tcl_DictObjPut(NULL, dictPtr,
+		    Tcl_NewStringObj(options[2], -1), empty);
+	    Tcl_DictObjPut(NULL, dictPtr,
+		    Tcl_NewStringObj(options[3], -1), empty);
+	}
+	Tcl_SetObjResult(interp, dictPtr);
+	return TCL_OK;
+    } else if (objc == consumedObjc+1) {
+	if (Tcl_GetIndexFromObj(interp, objv[consumedObjc], options, "option",
+		0, &index) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	switch ((enum Options) index) {
+	case OPT_CMD:
+	    key.interp = slaveInterp;
+	    key.type = TCL_LIMIT_TIME;
+	    hPtr = Tcl_FindHashEntry(&iPtr->limit.callbacks, (char *) &key);
+	    if (hPtr != NULL) {
+		limitCBPtr = Tcl_GetHashValue(hPtr);
+		if (limitCBPtr != NULL && limitCBPtr->scriptObj != NULL) {
+		    Tcl_SetObjResult(interp, limitCBPtr->scriptObj);
+		}
+	    }
+	    break;
+	case OPT_GRAN:
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(
+		    Tcl_LimitGetGranularity(slaveInterp, TCL_LIMIT_TIME)));
+	    break;
+	case OPT_MILLI:
+	    if (Tcl_LimitTypeEnabled(slaveInterp, TCL_LIMIT_TIME)) {
+		Tcl_Time limitMoment;
+
+		Tcl_LimitGetTime(slaveInterp, &limitMoment);
+		Tcl_SetObjResult(interp,
+			Tcl_NewLongObj(limitMoment.usec/1000));
+	    }
+	    break;
+	case OPT_SEC:
+	    if (Tcl_LimitTypeEnabled(slaveInterp, TCL_LIMIT_TIME)) {
+		Tcl_Time limitMoment;
+
+		Tcl_LimitGetTime(slaveInterp, &limitMoment);
+		Tcl_SetObjResult(interp, Tcl_NewLongObj(limitMoment.sec));
+	    }
+	    break;
+	}
+	return TCL_OK;
+    } else if ((objc-consumedObjc) & 1 /* isOdd(objc-consumedObjc) */) {
+	Tcl_WrongNumArgs(interp, consumedObjc, objv,
+		"?-option? ?value? ?-option value ...?");
+	return TCL_ERROR;
+    } else {
+	int i, scriptLen = 0, milliLen = 0, secLen = 0;
+	Tcl_Obj *scriptObj = NULL, *granObj = NULL;
+	Tcl_Obj *milliObj = NULL, *secObj = NULL;
+	int gran = 0;
+	Tcl_Time limitMoment;
+	int tmp;
+
+	Tcl_LimitGetTime(slaveInterp, &limitMoment);
+	for (i=consumedObjc ; i<objc ; i+=2) {
+	    if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0,
+		    &index) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch ((enum Options) index) {
+	    case OPT_CMD:
+		scriptObj = objv[i+1];
+		(void) Tcl_GetStringFromObj(objv[i+1], &scriptLen);
+		break;
+	    case OPT_GRAN:
+		granObj = objv[i+1];
+		if (TclGetIntFromObj(interp, objv[i+1], &gran) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		if (gran < 1) {
+		    Tcl_AppendResult(interp, "granularity must be at "
+			    "least 1", NULL);
+		    return TCL_ERROR;
+		}
+		break;
+	    case OPT_MILLI:
+		milliObj = objv[i+1];
+		(void) Tcl_GetStringFromObj(objv[i+1], &milliLen);
+		if (milliLen == 0) {
+		    break;
+		}
+		if (TclGetIntFromObj(interp, objv[i+1], &tmp) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		if (tmp < 0) {
+		    Tcl_AppendResult(interp, "milliseconds must be at least 0",
+			    NULL);
+		    return TCL_ERROR;
+		}
+		limitMoment.usec = ((long)tmp)*1000;
+		break;
+	    case OPT_SEC:
+		secObj = objv[i+1];
+		(void) Tcl_GetStringFromObj(objv[i+1], &secLen);
+		if (secLen == 0) {
+		    break;
+		}
+		if (TclGetIntFromObj(interp, objv[i+1], &tmp) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		if (tmp < 0) {
+		    Tcl_AppendResult(interp, "seconds must be at least 0",
+			    NULL);
+		    return TCL_ERROR;
+		}
+		limitMoment.sec = tmp;
+		break;
+	    }
+	}
+	if (milliObj != NULL || secObj != NULL) {
+	    if (milliObj != NULL) {
+		/*
+		 * Setting -milliseconds but clearing -seconds, or resetting
+		 * -milliseconds but not resetting -seconds? Bad voodoo!
+		 */
+
+		if (secObj != NULL && secLen == 0 && milliLen > 0) {
+		    Tcl_AppendResult(interp, "may only set -milliseconds "
+			    "if -seconds is not also being reset", NULL);
+		    return TCL_ERROR;
+		}
+		if (milliLen == 0 && (secObj == NULL || secLen > 0)) {
+		    Tcl_AppendResult(interp, "may only reset -milliseconds "
+			    "if -seconds is also being reset", NULL);
+		    return TCL_ERROR;
+		}
+	    }
+
+	    if (milliLen > 0 || secLen > 0) {
+		/*
+		 * Force usec to be in range [0..1000000), possibly
+		 * incrementing sec in the process. This makes it much easier
+		 * for people to write scripts that do small time increments.
+		 */
+
+		limitMoment.sec += limitMoment.usec / 1000000;
+		limitMoment.usec %= 1000000;
+
+		Tcl_LimitSetTime(slaveInterp, &limitMoment);
+		Tcl_LimitTypeSet(slaveInterp, TCL_LIMIT_TIME);
+	    } else {
+		Tcl_LimitTypeReset(slaveInterp, TCL_LIMIT_TIME);
+	    }
+	}
+	if (scriptObj != NULL) {
+	    SetScriptLimitCallback(interp, TCL_LIMIT_TIME, slaveInterp,
+		    (scriptLen > 0 ? scriptObj : NULL));
+	}
+	if (granObj != NULL) {
+	    Tcl_LimitSetGranularity(slaveInterp, TCL_LIMIT_TIME, gran);
+	}
+	return TCL_OK;
+    }
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclLink.c b/generic/tclLink.c
index 28b1786..f7911a4 100644
--- a/generic/tclLink.c
+++ b/generic/tclLink.c
@@ -1,102 +1,125 @@
-/* 
+/*
  * tclLink.c --
  *
- *	This file implements linked variables (a C variable that is
- *	tied to a Tcl variable).  The idea of linked variables was
- *	first suggested by Andreas Stolcke and this implementation is
- *	based heavily on a prototype implementation provided by
- *	him.
+ *	This file implements linked variables (a C variable that is tied to a
+ *	Tcl variable). The idea of linked variables was first suggested by
+ *	Andreas Stolcke and this implementation is based heavily on a
+ *	prototype implementation provided by him.
  *
  * Copyright (c) 1993 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * For each linked variable there is a data structure of the following
- * type, which describes the link and is the clientData for the trace
- * set on the Tcl variable.
+ * For each linked variable there is a data structure of the following type,
+ * which describes the link and is the clientData for the trace set on the Tcl
+ * variable.
  */
 
 typedef struct Link {
     Tcl_Interp *interp;		/* Interpreter containing Tcl variable. */
-    Tcl_Obj *varName;		/* Name of variable (must be global).  This
-				 * is needed during trace callbacks, since
-				 * the actual variable may be aliased at
-				 * that time via upvar. */
+    Tcl_Obj *varName;		/* Name of variable (must be global). This is
+				 * needed during trace callbacks, since the
+				 * actual variable may be aliased at that time
+				 * via upvar. */
     char *addr;			/* Location of C variable. */
     int type;			/* Type of link (TCL_LINK_INT, etc.). */
     union {
+	char c;
+	unsigned char uc;
 	int i;
-	double d;
+	unsigned int ui;
+	short s;
+	unsigned short us;
+	long l;
+	unsigned long ul;
 	Tcl_WideInt w;
-    } lastValue;		/* Last known value of C variable;  used to
+	Tcl_WideUInt uw;
+	float f;
+	double d;
+    } lastValue;		/* Last known value of C variable; used to
 				 * avoid string conversions. */
-    int flags;			/* Miscellaneous one-bit values;  see below
-				 * for definitions. */
+    int flags;			/* Miscellaneous one-bit values; see below for
+				 * definitions. */
 } Link;
 
 /*
  * Definitions for flag bits:
  * LINK_READ_ONLY -		1 means errors should be generated if Tcl
  *				script attempts to write variable.
- * LINK_BEING_UPDATED -		1 means that a call to Tcl_UpdateLinkedVar
- *				is in progress for this variable, so
- *				trace callbacks on the variable should
- *				be ignored.
+ * LINK_BEING_UPDATED -		1 means that a call to Tcl_UpdateLinkedVar is
+ *				in progress for this variable, so trace
+ *				callbacks on the variable should be ignored.
  */
 
 #define LINK_READ_ONLY		1
 #define LINK_BEING_UPDATED	2
 
 /*
- * Forward references to procedures defined later in this file:
+ * Forward references to functions defined later in this file:
+ */
+
+static char *		LinkTraceProc(ClientData clientData,Tcl_Interp *interp,
+			    CONST char *name1, CONST char *name2, int flags);
+static Tcl_Obj *	ObjValue(Link *linkPtr);
+
+/*
+ * Convenience macro for accessing the value of the C variable pointed to by a
+ * link. Note that this macro produces something that may be regarded as an
+ * lvalue or rvalue; it may be assigned to as well as read. Also note that
+ * this macro assumes the name of the variable being accessed (linkPtr); this
+ * is not strictly a good thing, but it keeps the code much shorter and
+ * cleaner.
  */
 
-static char *		LinkTraceProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, CONST char *name1, 
-                            CONST char *name2, int flags));
-static Tcl_Obj *	ObjValue _ANSI_ARGS_((Link *linkPtr));
+#define LinkedVar(type) (*(type *) linkPtr->addr)
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_LinkVar --
  *
- *	Link a C variable to a Tcl variable so that changes to either
- *	one causes the other to change.
+ *	Link a C variable to a Tcl variable so that changes to either one
+ *	causes the other to change.
  *
  * Results:
- *	The return value is TCL_OK if everything went well or TCL_ERROR
- *	if an error occurred (the interp's result is also set after
- *	errors).
+ *	The return value is TCL_OK if everything went well or TCL_ERROR if an
+ *	error occurred (the interp's result is also set after errors).
  *
  * Side effects:
- *	The value at *addr is linked to the Tcl variable "varName",
- *	using "type" to convert between string values for Tcl and
- *	binary values for *addr.
+ *	The value at *addr is linked to the Tcl variable "varName", using
+ *	"type" to convert between string values for Tcl and binary values for
+ *	*addr.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_LinkVar(interp, varName, addr, type)
-    Tcl_Interp *interp;		/* Interpreter in which varName exists. */
-    CONST char *varName;	/* Name of a global variable in interp. */
-    char *addr;			/* Address of a C variable to be linked
-				 * to varName. */
-    int type;			/* Type of C variable: TCL_LINK_INT, etc. 
-				 * Also may have TCL_LINK_READ_ONLY
-				 * OR'ed in. */
+Tcl_LinkVar(
+    Tcl_Interp *interp,		/* Interpreter in which varName exists. */
+    CONST char *varName,	/* Name of a global variable in interp. */
+    char *addr,			/* Address of a C variable to be linked to
+				 * varName. */
+    int type)			/* Type of C variable: TCL_LINK_INT, etc. Also
+				 * may have TCL_LINK_READ_ONLY OR'ed in. */
 {
-    Tcl_Obj *objPtr, *resPtr;
+    Tcl_Obj *objPtr;
     Link *linkPtr;
     int code;
 
+    linkPtr = (Link *) Tcl_VarTraceInfo(interp, varName, TCL_GLOBAL_ONLY,
+	    LinkTraceProc, (ClientData) NULL);
+    if (linkPtr != NULL) {
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"variable '%s' is already linked", varName));
+	return TCL_ERROR;
+    }
+
     linkPtr = (Link *) ckalloc(sizeof(Link));
     linkPtr->interp = interp;
     linkPtr->varName = Tcl_NewStringObj(varName, -1);
@@ -109,11 +132,8 @@ Tcl_LinkVar(interp, varName, addr, type)
 	linkPtr->flags = 0;
     }
     objPtr = ObjValue(linkPtr);
-    Tcl_IncrRefCount(objPtr);
-    resPtr = Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
-	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
-    Tcl_DecrRefCount(objPtr);
-    if (resPtr == NULL) {
+    if (Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
+	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
 	Tcl_DecrRefCount(linkPtr->varName);
 	ckfree((char *) linkPtr);
 	return TCL_ERROR;
@@ -139,17 +159,17 @@ Tcl_LinkVar(interp, varName, addr, type)
  *	None.
  *
  * Side effects:
- *	If "varName" was previously linked to a C variable, the link
- *	is broken to make the variable independent.  If there was no
- *	previous link for "varName" then nothing happens.
+ *	If "varName" was previously linked to a C variable, the link is broken
+ *	to make the variable independent. If there was no previous link for
+ *	"varName" then nothing happens.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_UnlinkVar(interp, varName)
-    Tcl_Interp *interp;		/* Interpreter containing variable to unlink. */
-    CONST char *varName;	/* Global variable in interp to unlink. */
+Tcl_UnlinkVar(
+    Tcl_Interp *interp,		/* Interpreter containing variable to unlink */
+    CONST char *varName)	/* Global variable in interp to unlink. */
 {
     Link *linkPtr;
 
@@ -170,28 +190,27 @@ Tcl_UnlinkVar(interp, varName)
  *
  * Tcl_UpdateLinkedVar --
  *
- *	This procedure is invoked after a linked variable has been
- *	changed by C code.  It updates the Tcl variable so that
- *	traces on the variable will trigger.
+ *	This function is invoked after a linked variable has been changed by C
+ *	code. It updates the Tcl variable so that traces on the variable will
+ *	trigger.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The Tcl variable "varName" is updated from its C value,
- *	causing traces on the variable to trigger.
+ *	The Tcl variable "varName" is updated from its C value, causing traces
+ *	on the variable to trigger.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_UpdateLinkedVar(interp, varName)
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *varName;	/* Name of global variable that is linked. */
+Tcl_UpdateLinkedVar(
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    CONST char *varName)	/* Name of global variable that is linked. */
 {
     Link *linkPtr;
     int savedFlag;
-    Tcl_Obj *objPtr;
 
     linkPtr = (Link *) Tcl_VarTraceInfo(interp, varName, TCL_GLOBAL_ONLY,
 	    LinkTraceProc, (ClientData) NULL);
@@ -200,10 +219,8 @@ Tcl_UpdateLinkedVar(interp, varName)
     }
     savedFlag = linkPtr->flags & LINK_BEING_UPDATED;
     linkPtr->flags |= LINK_BEING_UPDATED;
-    objPtr = ObjValue(linkPtr);
-    Tcl_IncrRefCount(objPtr);
-    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr, TCL_GLOBAL_ONLY);
-    Tcl_DecrRefCount(objPtr);
+    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+	    TCL_GLOBAL_ONLY);
     /*
      * Callback may have unlinked the variable. [Bug 1740631]
      */
@@ -219,39 +236,42 @@ Tcl_UpdateLinkedVar(interp, varName)
  *
  * LinkTraceProc --
  *
- *	This procedure is invoked when a linked Tcl variable is read,
- *	written, or unset from Tcl.  It's responsible for keeping the
- *	C variable in sync with the Tcl variable.
+ *	This function is invoked when a linked Tcl variable is read, written,
+ *	or unset from Tcl. It's responsible for keeping the C variable in sync
+ *	with the Tcl variable.
  *
  * Results:
- *	If all goes well, NULL is returned; otherwise an error message
- *	is returned.
+ *	If all goes well, NULL is returned; otherwise an error message is
+ *	returned.
  *
  * Side effects:
- *	The C variable may be updated to make it consistent with the
- *	Tcl variable, or the Tcl variable may be overwritten to reject
- *	a modification.
+ *	The C variable may be updated to make it consistent with the Tcl
+ *	variable, or the Tcl variable may be overwritten to reject a
+ *	modification.
  *
  *----------------------------------------------------------------------
  */
 
 static char *
-LinkTraceProc(clientData, interp, name1, name2, flags)
-    ClientData clientData;	/* Contains information about the link. */
-    Tcl_Interp *interp;		/* Interpreter containing Tcl variable. */
-    CONST char *name1;		/* First part of variable name. */
-    CONST char *name2;		/* Second part of variable name. */
-    int flags;			/* Miscellaneous additional information. */
+LinkTraceProc(
+    ClientData clientData,	/* Contains information about the link. */
+    Tcl_Interp *interp,		/* Interpreter containing Tcl variable. */
+    CONST char *name1,		/* First part of variable name. */
+    CONST char *name2,		/* Second part of variable name. */
+    int flags)			/* Miscellaneous additional information. */
 {
     Link *linkPtr = (Link *) clientData;
     int changed, valueLength;
     CONST char *value;
-    char **pp, *result;
-    Tcl_Obj *objPtr, *valueObj, *tmpPtr;
+    char **pp;
+    Tcl_Obj *valueObj;
+    int valueInt;
+    Tcl_WideInt valueWide;
+    double valueDouble;
 
     /*
-     * If the variable is being unset, then just re-create it (with a
-     * trace) unless the whole interpreter is going away.
+     * If the variable is being unset, then just re-create it (with a trace)
+     * unless the whole interpreter is going away.
      */
 
     if (flags & TCL_TRACE_UNSETS) {
@@ -259,11 +279,8 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
 	    Tcl_DecrRefCount(linkPtr->varName);
 	    ckfree((char *) linkPtr);
 	} else if (flags & TCL_TRACE_DESTROYED) {
-	    tmpPtr = ObjValue(linkPtr);
-	    Tcl_IncrRefCount(tmpPtr);
-	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
 		    TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(tmpPtr);
 	    Tcl_TraceVar(interp, Tcl_GetString(linkPtr->varName),
 		    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES
 		    |TCL_TRACE_UNSETS, LinkTraceProc, (ClientData) linkPtr);
@@ -272,10 +289,9 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
     }
 
     /*
-     * If we were invoked because of a call to Tcl_UpdateLinkedVar, then
-     * don't do anything at all.  In particular, we don't want to get
-     * upset that the variable is being modified, even if it is
-     * supposed to be read-only.
+     * If we were invoked because of a call to Tcl_UpdateLinkedVar, then don't
+     * do anything at all. In particular, we don't want to get upset that the
+     * variable is being modified, even if it is supposed to be read-only.
      */
 
     if (linkPtr->flags & LINK_BEING_UPDATED) {
@@ -283,21 +299,48 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
     }
 
     /*
-     * For read accesses, update the Tcl variable if the C variable
-     * has changed since the last time we updated the Tcl variable.
+     * For read accesses, update the Tcl variable if the C variable has
+     * changed since the last time we updated the Tcl variable.
      */
 
     if (flags & TCL_TRACE_READS) {
 	switch (linkPtr->type) {
 	case TCL_LINK_INT:
 	case TCL_LINK_BOOLEAN:
-	    changed = *(int *)(linkPtr->addr) != linkPtr->lastValue.i;
+	    changed = (LinkedVar(int) != linkPtr->lastValue.i);
 	    break;
 	case TCL_LINK_DOUBLE:
-	    changed = *(double *)(linkPtr->addr) != linkPtr->lastValue.d;
+	    changed = (LinkedVar(double) != linkPtr->lastValue.d);
 	    break;
 	case TCL_LINK_WIDE_INT:
-	    changed = *(Tcl_WideInt *)(linkPtr->addr) != linkPtr->lastValue.w;
+	    changed = (LinkedVar(Tcl_WideInt) != linkPtr->lastValue.w);
+	    break;
+	case TCL_LINK_WIDE_UINT:
+	    changed = (LinkedVar(Tcl_WideUInt) != linkPtr->lastValue.uw);
+	    break;
+	case TCL_LINK_CHAR:
+	    changed = (LinkedVar(char) != linkPtr->lastValue.c);
+	    break;
+	case TCL_LINK_UCHAR:
+	    changed = (LinkedVar(unsigned char) != linkPtr->lastValue.uc);
+	    break;
+	case TCL_LINK_SHORT:
+	    changed = (LinkedVar(short) != linkPtr->lastValue.s);
+	    break;
+	case TCL_LINK_USHORT:
+	    changed = (LinkedVar(unsigned short) != linkPtr->lastValue.us);
+	    break;
+	case TCL_LINK_UINT:
+	    changed = (LinkedVar(unsigned int) != linkPtr->lastValue.ui);
+	    break;
+	case TCL_LINK_LONG:
+	    changed = (LinkedVar(long) != linkPtr->lastValue.l);
+	    break;
+	case TCL_LINK_ULONG:
+	    changed = (LinkedVar(unsigned long) != linkPtr->lastValue.ul);
+	    break;
+	case TCL_LINK_FLOAT:
+	    changed = (LinkedVar(float) != linkPtr->lastValue.f);
 	    break;
 	case TCL_LINK_STRING:
 	    changed = 1;
@@ -306,30 +349,24 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
 	    return "internal error: bad linked variable type";
 	}
 	if (changed) {
-	    tmpPtr = ObjValue(linkPtr);
-	    Tcl_IncrRefCount(tmpPtr);
-	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
 		    TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(tmpPtr);
 	}
 	return NULL;
     }
 
     /*
-     * For writes, first make sure that the variable is writable.  Then
-     * convert the Tcl value to C if possible.  If the variable isn't
-     * writable or can't be converted, then restore the varaible's old
-     * value and return an error.  Another tricky thing: we have to save
-     * and restore the interpreter's result, since the variable access
-     * could occur when the result has been partially set.
+     * For writes, first make sure that the variable is writable. Then convert
+     * the Tcl value to C if possible. If the variable isn't writable or can't
+     * be converted, then restore the varaible's old value and return an
+     * error. Another tricky thing: we have to save and restore the interp's
+     * result, since the variable access could occur when the result has been
+     * partially set.
      */
 
     if (linkPtr->flags & LINK_READ_ONLY) {
-	tmpPtr = ObjValue(linkPtr);
-	Tcl_IncrRefCount(tmpPtr);
-	Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
+	Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
 		TCL_GLOBAL_ONLY);
-	Tcl_DecrRefCount(tmpPtr);
 	return "linked variable is read-only";
     }
     valueObj = Tcl_ObjGetVar2(interp, linkPtr->varName,NULL, TCL_GLOBAL_ONLY);
@@ -337,92 +374,172 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
 	/*
 	 * This shouldn't ever happen.
 	 */
+
 	return "internal error: linked variable couldn't be read";
     }
 
-    objPtr = Tcl_GetObjResult(interp);
-    Tcl_IncrRefCount(objPtr);
-    Tcl_ResetResult(interp);
-    result = NULL;
-
     switch (linkPtr->type) {
     case TCL_LINK_INT:
-	if (Tcl_GetIntFromObj(interp, valueObj, &linkPtr->lastValue.i)
+	if (Tcl_GetIntFromObj(NULL, valueObj, &linkPtr->lastValue.i)
 		!= TCL_OK) {
-	    Tcl_SetObjResult(interp, objPtr);
-	    tmpPtr = ObjValue(linkPtr);
-	    Tcl_IncrRefCount(tmpPtr);
-	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
 		    TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(tmpPtr);
-	    result = "variable must have integer value";
-	    goto end;
+	    return "variable must have integer value";
 	}
-	*(int *)(linkPtr->addr) = linkPtr->lastValue.i;
+	LinkedVar(int) = linkPtr->lastValue.i;
 	break;
 
     case TCL_LINK_WIDE_INT:
-	if (Tcl_GetWideIntFromObj(interp, valueObj, &linkPtr->lastValue.w)
+	if (Tcl_GetWideIntFromObj(NULL, valueObj, &linkPtr->lastValue.w)
 		!= TCL_OK) {
-	    Tcl_SetObjResult(interp, objPtr);
-	    tmpPtr = ObjValue(linkPtr);
-	    Tcl_IncrRefCount(tmpPtr);
-	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
 		    TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(tmpPtr);
-	    result = "variable must have integer value";
-	    goto end;
+	    return "variable must have integer value";
 	}
-	*(Tcl_WideInt *)(linkPtr->addr) = linkPtr->lastValue.w;
+	LinkedVar(Tcl_WideInt) = linkPtr->lastValue.w;
 	break;
 
     case TCL_LINK_DOUBLE:
-	if (Tcl_GetDoubleFromObj(interp, valueObj, &linkPtr->lastValue.d)
+	if (Tcl_GetDoubleFromObj(NULL, valueObj, &linkPtr->lastValue.d)
 		!= TCL_OK) {
-	    Tcl_SetObjResult(interp, objPtr);
-	    tmpPtr = ObjValue(linkPtr);
-	    Tcl_IncrRefCount(tmpPtr);
-	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
-		    TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(tmpPtr);
-	    result = "variable must have real value";
-	    goto end;
+#ifdef ACCEPT_NAN
+	    if (valueObj->typePtr != &tclDoubleType) {
+#endif
+		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
+			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
+		return "variable must have real value";
+#ifdef ACCEPT_NAN
+	    }
+	    linkPtr->lastValue.d = valueObj->internalRep.doubleValue;
+#endif
 	}
-	*(double *)(linkPtr->addr) = linkPtr->lastValue.d;
+	LinkedVar(double) = linkPtr->lastValue.d;
 	break;
 
     case TCL_LINK_BOOLEAN:
-	if (Tcl_GetBooleanFromObj(interp, valueObj, &linkPtr->lastValue.i)
-	    != TCL_OK) {
-	    Tcl_SetObjResult(interp, objPtr);
-	    tmpPtr = ObjValue(linkPtr);
-	    Tcl_IncrRefCount(tmpPtr);
-	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, tmpPtr,
+	if (Tcl_GetBooleanFromObj(NULL, valueObj, &linkPtr->lastValue.i)
+		!= TCL_OK) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have boolean value";
+	}
+	LinkedVar(int) = linkPtr->lastValue.i;
+	break;
+
+    case TCL_LINK_CHAR:
+	if (Tcl_GetIntFromObj(interp, valueObj, &valueInt) != TCL_OK
+		|| valueInt < SCHAR_MIN || valueInt > SCHAR_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have char value";
+	}
+	linkPtr->lastValue.c = (char)valueInt;
+	LinkedVar(char) = linkPtr->lastValue.c;
+	break;
+
+    case TCL_LINK_UCHAR:
+	if (Tcl_GetIntFromObj(interp, valueObj, &valueInt) != TCL_OK
+		|| valueInt < 0 || valueInt > UCHAR_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
 		    TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(tmpPtr);
-	    result = "variable must have boolean value";
-	    goto end;
+	    return "variable must have unsigned char value";
 	}
-	*(int *)(linkPtr->addr) = linkPtr->lastValue.i;
+	linkPtr->lastValue.uc = (unsigned char) valueInt;
+	LinkedVar(unsigned char) = linkPtr->lastValue.uc;
+	break;
+
+    case TCL_LINK_SHORT:
+	if (Tcl_GetIntFromObj(interp, valueObj, &valueInt) != TCL_OK
+		|| valueInt < SHRT_MIN || valueInt > SHRT_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have short value";
+	}
+	linkPtr->lastValue.s = (short)valueInt;
+	LinkedVar(short) = linkPtr->lastValue.s;
+	break;
+
+    case TCL_LINK_USHORT:
+	if (Tcl_GetIntFromObj(interp, valueObj, &valueInt) != TCL_OK
+		|| valueInt < 0 || valueInt > USHRT_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have unsigned short value";
+	}
+	linkPtr->lastValue.us = (unsigned short)valueInt;
+	LinkedVar(unsigned short) = linkPtr->lastValue.us;
+	break;
+
+    case TCL_LINK_UINT:
+	if (Tcl_GetWideIntFromObj(interp, valueObj, &valueWide) != TCL_OK
+		|| valueWide < 0 || valueWide > UINT_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have unsigned int value";
+	}
+	linkPtr->lastValue.ui = (unsigned int)valueWide;
+	LinkedVar(unsigned int) = linkPtr->lastValue.ui;
+	break;
+
+    case TCL_LINK_LONG:
+	if (Tcl_GetWideIntFromObj(interp, valueObj, &valueWide) != TCL_OK
+		|| valueWide < LONG_MIN || valueWide > LONG_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have long value";
+	}
+	linkPtr->lastValue.l = (long)valueWide;
+	LinkedVar(long) = linkPtr->lastValue.l;
+	break;
+
+    case TCL_LINK_ULONG:
+	if (Tcl_GetWideIntFromObj(interp, valueObj, &valueWide) != TCL_OK
+		|| valueWide < 0 || (Tcl_WideUInt) valueWide > ULONG_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have unsigned long value";
+	}
+	linkPtr->lastValue.ul = (unsigned long)valueWide;
+	LinkedVar(unsigned long) = linkPtr->lastValue.ul;
+	break;
+
+    case TCL_LINK_WIDE_UINT:
+	/*
+	 * FIXME: represent as a bignum.
+	 */
+	if (Tcl_GetWideIntFromObj(interp, valueObj, &valueWide) != TCL_OK) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have unsigned wide int value";
+	}
+	linkPtr->lastValue.uw = (Tcl_WideUInt)valueWide;
+	LinkedVar(Tcl_WideUInt) = linkPtr->lastValue.uw;
+	break;
+
+    case TCL_LINK_FLOAT:
+	if (Tcl_GetDoubleFromObj(interp, valueObj, &valueDouble) != TCL_OK
+		|| valueDouble < -FLT_MAX || valueDouble > FLT_MAX) {
+	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
+		    TCL_GLOBAL_ONLY);
+	    return "variable must have float value";
+	}
+	linkPtr->lastValue.f = (float)valueDouble;
+	LinkedVar(float) = linkPtr->lastValue.f;
 	break;
 
     case TCL_LINK_STRING:
 	value = Tcl_GetStringFromObj(valueObj, &valueLength);
 	valueLength++;
-	pp = (char **)(linkPtr->addr);
-	if (*pp != NULL) {
-	    ckfree(*pp);
-	}
-	*pp = (char *) ckalloc((unsigned) valueLength);
+	pp = (char **) linkPtr->addr;
+
+	*pp = ckrealloc(*pp, valueLength);
 	memcpy(*pp, value, (unsigned) valueLength);
 	break;
 
     default:
 	return "internal error: bad linked variable type";
     }
-    end:
-    Tcl_DecrRefCount(objPtr);
-    return result;
+    return NULL;
 }
 
 /*
@@ -430,12 +547,12 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
  *
  * ObjValue --
  *
- *	Converts the value of a C variable to a Tcl_Obj* for use in a
- *	Tcl variable to which it is linked.
+ *	Converts the value of a C variable to a Tcl_Obj* for use in a Tcl
+ *	variable to which it is linked.
  *
  * Results:
- *	The return value is a pointer to a Tcl_Obj that represents
- *	the value of the C variable given by linkPtr.
+ *	The return value is a pointer to a Tcl_Obj that represents the value
+ *	of the C variable given by linkPtr.
  *
  * Side effects:
  *	None.
@@ -444,36 +561,78 @@ LinkTraceProc(clientData, interp, name1, name2, flags)
  */
 
 static Tcl_Obj *
-ObjValue(linkPtr)
-    Link *linkPtr;		/* Structure describing linked variable. */
+ObjValue(
+    Link *linkPtr)		/* Structure describing linked variable. */
 {
     char *p;
+    Tcl_Obj *resultObj;
 
     switch (linkPtr->type) {
     case TCL_LINK_INT:
-	linkPtr->lastValue.i = *(int *)(linkPtr->addr);
+	linkPtr->lastValue.i = LinkedVar(int);
 	return Tcl_NewIntObj(linkPtr->lastValue.i);
     case TCL_LINK_WIDE_INT:
-	linkPtr->lastValue.w = *(Tcl_WideInt *)(linkPtr->addr);
+	linkPtr->lastValue.w = LinkedVar(Tcl_WideInt);
 	return Tcl_NewWideIntObj(linkPtr->lastValue.w);
     case TCL_LINK_DOUBLE:
-	linkPtr->lastValue.d = *(double *)(linkPtr->addr);
+	linkPtr->lastValue.d = LinkedVar(double);
 	return Tcl_NewDoubleObj(linkPtr->lastValue.d);
     case TCL_LINK_BOOLEAN:
-	linkPtr->lastValue.i = *(int *)(linkPtr->addr);
+	linkPtr->lastValue.i = LinkedVar(int);
 	return Tcl_NewBooleanObj(linkPtr->lastValue.i != 0);
+    case TCL_LINK_CHAR:
+	linkPtr->lastValue.c = LinkedVar(char);
+	return Tcl_NewIntObj(linkPtr->lastValue.c);
+    case TCL_LINK_UCHAR:
+	linkPtr->lastValue.uc = LinkedVar(unsigned char);
+	return Tcl_NewIntObj(linkPtr->lastValue.uc);
+    case TCL_LINK_SHORT:
+	linkPtr->lastValue.s = LinkedVar(short);
+	return Tcl_NewIntObj(linkPtr->lastValue.s);
+    case TCL_LINK_USHORT:
+	linkPtr->lastValue.us = LinkedVar(unsigned short);
+	return Tcl_NewIntObj(linkPtr->lastValue.us);
+    case TCL_LINK_UINT:
+	linkPtr->lastValue.ui = LinkedVar(unsigned int);
+	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.ui);
+    case TCL_LINK_LONG:
+	linkPtr->lastValue.l = LinkedVar(long);
+	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.l);
+    case TCL_LINK_ULONG:
+	linkPtr->lastValue.ul = LinkedVar(unsigned long);
+	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.ul);
+    case TCL_LINK_FLOAT:
+	linkPtr->lastValue.f = LinkedVar(float);
+	return Tcl_NewDoubleObj(linkPtr->lastValue.f);
+    case TCL_LINK_WIDE_UINT:
+	linkPtr->lastValue.uw = LinkedVar(Tcl_WideUInt);
+	/*
+	 * FIXME: represent as a bignum.
+	 */
+	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.uw);
     case TCL_LINK_STRING:
-	p = *(char **)(linkPtr->addr);
+	p = LinkedVar(char *);
 	if (p == NULL) {
-	    return Tcl_NewStringObj("NULL", 4);
+	    TclNewLiteralStringObj(resultObj, "NULL");
+	    return resultObj;
 	}
 	return Tcl_NewStringObj(p, -1);
 
     /*
-     * This code only gets executed if the link type is unknown
-     * (shouldn't ever happen).
+     * This code only gets executed if the link type is unknown (shouldn't
+     * ever happen).
      */
+
     default:
-	return Tcl_NewStringObj("??", 2);
+	TclNewLiteralStringObj(resultObj, "??");
+	return resultObj;
     }
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclListObj.c b/generic/tclListObj.c
index b4af98a..d6ffa95 100644
--- a/generic/tclListObj.c
+++ b/generic/tclListObj.c
@@ -1,70 +1,193 @@
-/* 
+/*
  * tclListObj.c --
  *
- *	This file contains procedures that implement the Tcl list object
- *	type.
+ *	This file contains functions that implement the Tcl list object type.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998 by Scriptics Corporation.
  * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * Prototypes for procedures defined later in this file:
+ * Prototypes for functions defined later in this file:
  */
 
-static void		DupListInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *copyPtr));
-static void		FreeListInternalRep _ANSI_ARGS_((Tcl_Obj *listPtr));
-static int		SetListFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static void		UpdateStringOfList _ANSI_ARGS_((Tcl_Obj *listPtr));
+static List *		AttemptNewList(Tcl_Interp *interp, int objc,
+			    Tcl_Obj *CONST objv[]);
+static List *		NewListIntRep(int objc, Tcl_Obj *CONST objv[], int p);
+static void		DupListInternalRep(Tcl_Obj *srcPtr, Tcl_Obj *copyPtr);
+static void		FreeListInternalRep(Tcl_Obj *listPtr);
+static int		SetListFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static void		UpdateStringOfList(Tcl_Obj *listPtr);
 
 /*
- * The structure below defines the list Tcl object type by means of
- * procedures that can be invoked by generic object code.
+ * The structure below defines the list Tcl object type by means of functions
+ * that can be invoked by generic object code.
  *
  * The internal representation of a list object is a two-pointer
- * representation.  The first pointer designates a List structure that
- * contains an array of pointers to the element objects, together with
- * integers that represent the current element count and the allocated
- * size of the array.  The second pointer is normally NULL; during
- * execution of functions in this file that operate on nested sublists,
- * it is occasionally used as working storage to avoid an auxiliary
- * stack.
+ * representation. The first pointer designates a List structure that contains
+ * an array of pointers to the element objects, together with integers that
+ * represent the current element count and the allocated size of the array.
+ * The second pointer is normally NULL; during execution of functions in this
+ * file that operate on nested sublists, it is occasionally used as working
+ * storage to avoid an auxiliary stack.
  */
 
 Tcl_ObjType tclListType = {
-    "list",				/* name */
-    FreeListInternalRep,		/* freeIntRepProc */
-    DupListInternalRep,		        /* dupIntRepProc */
-    UpdateStringOfList,			/* updateStringProc */
-    SetListFromAny			/* setFromAnyProc */
+    "list",			/* name */
+    FreeListInternalRep,	/* freeIntRepProc */
+    DupListInternalRep,		/* dupIntRepProc */
+    UpdateStringOfList,		/* updateStringProc */
+    SetListFromAny		/* setFromAnyProc */
 };
 
 /*
  *----------------------------------------------------------------------
  *
+ * NewListIntRep --
+ *
+ *	Creates a list internal rep with space for objc elements.  objc
+ *	must be > 0.  If objv!=NULL, initializes with the first objc values
+ *	in that array.  If objv==NULL, initalize list internal rep to have
+ *	0 elements, with space to add objc more.  Flag value "p" indicates
+ *	how to behave on failure.
+ *
+ * Results:
+ *	A new List struct with refCount 0 is returned. If some failure
+ *	prevents this then if p=0, NULL is returned and otherwise the
+ *	routine panics.
+ *
+ * Side effects:
+ *	The ref counts of the elements in objv are incremented since the
+ *	resulting list now refers to them.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static List *
+NewListIntRep(
+    int objc,
+    Tcl_Obj *CONST objv[],
+    int p)
+{
+    List *listRepPtr;
+
+    if (objc <= 0) {
+	Tcl_Panic("NewListIntRep: expects postive element count");
+    }
+
+    /*
+     * First check to see if we'd overflow and try to allocate an object
+     * larger than our memory allocator allows. Note that this is actually a
+     * fairly small value when you're on a serious 64-bit machine, but that
+     * requires API changes to fix. See [Bug 219196] for a discussion.
+     */
+
+    if ((size_t)objc > LIST_MAX) {
+	if (p) {
+	    Tcl_Panic("max length of a Tcl list (%d elements) exceeded",
+		    LIST_MAX);
+	}
+	return NULL;
+    }
+
+    listRepPtr = (List *)
+	    attemptckalloc(sizeof(List) + ((objc-1) * sizeof(Tcl_Obj *)));
+    if (listRepPtr == NULL) {
+	if (p) {
+	    Tcl_Panic("list creation failed: unable to alloc %u bytes",
+		    (unsigned)(sizeof(List) + ((objc-1) * sizeof(Tcl_Obj *))));
+	}
+	return NULL;
+    }
+
+    listRepPtr->canonicalFlag = 0;
+    listRepPtr->refCount = 0;
+    listRepPtr->maxElemCount = objc;
+
+    if (objv) {
+	Tcl_Obj **elemPtrs;
+	int i;
+
+	listRepPtr->elemCount = objc;
+	elemPtrs = &listRepPtr->elements;
+	for (i = 0;  i < objc;  i++) {
+	    elemPtrs[i] = objv[i];
+	    Tcl_IncrRefCount(elemPtrs[i]);
+	}
+    } else {
+	listRepPtr->elemCount = 0;
+    }
+    return listRepPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AttemptNewList --
+ *
+ *	Creates a list internal rep with space for objc elements.  objc
+ *	must be > 0.  If objv!=NULL, initializes with the first objc values
+ *	in that array.  If objv==NULL, initalize list internal rep to have
+ *	0 elements, with space to add objc more.  
+ *
+ * Results:
+ *	A new List struct with refCount 0 is returned. If some failure
+ *	prevents this then NULL is returned, and an error message is left
+ *	in the interp result, unless interp is NULL.
+ *
+ * Side effects:
+ *	The ref counts of the elements in objv are incremented since the
+ *	resulting list now refers to them.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static List *
+AttemptNewList(
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *CONST objv[])
+{
+    List *listRepPtr = NewListIntRep(objc, objv, 0);
+
+    if (interp != NULL && listRepPtr == NULL) {
+	if (objc > LIST_MAX) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "max length of a Tcl list (%d elements) exceeded",
+		    LIST_MAX));
+	} else {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "list creation failed: unable to alloc %u bytes",
+		    (unsigned)(sizeof(List) + ((objc-1) * sizeof(Tcl_Obj *)))));
+	}
+    }
+    return listRepPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_NewListObj --
  *
- *	This procedure is normally called when not debugging: i.e., when
+ *	This function is normally called when not debugging: i.e., when
  *	TCL_MEM_DEBUG is not defined. It creates a new list object from an
  *	(objc,objv) array: that is, each of the objc elements of the array
  *	referenced by objv is inserted as an element into a new Tcl object.
  *
- *	When TCL_MEM_DEBUG is defined, this procedure just returns the
- *	result of calling the debugging version Tcl_DbNewListObj.
+ *	When TCL_MEM_DEBUG is defined, this function just returns the result
+ *	of calling the debugging version Tcl_DbNewListObj.
  *
  * Results:
  *	A new list object is returned that is initialized from the object
  *	pointers in objv. If objc is less than or equal to zero, an empty
- *	object is returned. The new object's string representation
- *	is left NULL. The resulting new list object has ref count 0.
+ *	object is returned. The new object's string representation is left
+ *	NULL. The resulting new list object has ref count 0.
  *
  * Side effects:
  *	The ref counts of the elements in objv are incremented since the
@@ -77,9 +200,9 @@ Tcl_ObjType tclListType = {
 #undef Tcl_NewListObj
 
 Tcl_Obj *
-Tcl_NewListObj(objc, objv)
-    int objc;			/* Count of objects referenced by objv. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to Tcl objects. */
+Tcl_NewListObj(
+    int objc,			/* Count of objects referenced by objv. */
+    Tcl_Obj *CONST objv[])	/* An array of pointers to Tcl objects. */
 {
     return Tcl_DbNewListObj(objc, objv, "unknown", 0);
 }
@@ -87,36 +210,31 @@ Tcl_NewListObj(objc, objv)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewListObj(objc, objv)
-    int objc;			/* Count of objects referenced by objv. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to Tcl objects. */
+Tcl_NewListObj(
+    int objc,			/* Count of objects referenced by objv. */
+    Tcl_Obj *CONST objv[])	/* An array of pointers to Tcl objects. */
 {
-    register Tcl_Obj *listPtr;
-    register Tcl_Obj **elemPtrs;
-    register List *listRepPtr;
-    int i;
-    
+    List *listRepPtr;
+    Tcl_Obj *listPtr;
+
     TclNewObj(listPtr);
-    
-    if (objc > 0) {
-	Tcl_InvalidateStringRep(listPtr);
-	
-	elemPtrs = (Tcl_Obj **)
-	    ckalloc((unsigned) (objc * sizeof(Tcl_Obj *)));
-	for (i = 0;  i < objc;  i++) {
-	    elemPtrs[i] = objv[i];
-	    Tcl_IncrRefCount(elemPtrs[i]);
-	}
-	
-	listRepPtr = (List *) ckalloc(sizeof(List));
-	listRepPtr->maxElemCount = objc;
-	listRepPtr->elemCount    = objc;
-	listRepPtr->elements     = elemPtrs;
-	
-	listPtr->internalRep.twoPtrValue.ptr1 = (VOID *) listRepPtr;
-	listPtr->internalRep.twoPtrValue.ptr2 = NULL;
-	listPtr->typePtr = &tclListType;
+
+    if (objc <= 0) {
+	return listPtr;
     }
+
+    /*
+     * Create the internal rep.
+     */
+
+    listRepPtr = NewListIntRep(objc, objv, 1);
+
+    /*
+     * Now create the object.
+     */
+
+    TclInvalidateStringRep(listPtr);
+    ListSetIntRep(listPtr, listRepPtr);
     return listPtr;
 }
 #endif /* if TCL_MEM_DEBUG */
@@ -126,22 +244,22 @@ Tcl_NewListObj(objc, objv)
  *
  * Tcl_DbNewListObj --
  *
- *	This procedure is normally called when debugging: i.e., when
- *	TCL_MEM_DEBUG is defined. It creates new list objects. It is the
- *	same as the Tcl_NewListObj procedure above except that it calls
+ *	This function is normally called when debugging: i.e., when
+ *	TCL_MEM_DEBUG is defined. It creates new list objects. It is the same
+ *	as the Tcl_NewListObj function above except that it calls
  *	Tcl_DbCkalloc directly with the file name and line number from its
  *	caller. This simplifies debugging since then the [memory active]
- *	command	will report the correct file name and line number when
+ *	command will report the correct file name and line number when
  *	reporting objects that haven't been freed.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just returns the
+ *	When TCL_MEM_DEBUG is not defined, this function just returns the
  *	result of calling Tcl_NewListObj.
  *
  * Results:
  *	A new list object is returned that is initialized from the object
  *	pointers in objv. If objc is less than or equal to zero, an empty
- *	object is returned. The new object's string representation
- *	is left NULL. The new list object has ref count 0.
+ *	object is returned. The new object's string representation is left
+ *	NULL. The new list object has ref count 0.
  *
  * Side effects:
  *	The ref counts of the elements in objv are incremented since the
@@ -153,53 +271,49 @@ Tcl_NewListObj(objc, objv)
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewListObj(objc, objv, file, line)
-    int objc;			/* Count of objects referenced by objv. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to Tcl objects. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewListObj(
+    int objc,			/* Count of objects referenced by objv. */
+    Tcl_Obj *CONST objv[],	/* An array of pointers to Tcl objects. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
-    register Tcl_Obj *listPtr;
-    register Tcl_Obj **elemPtrs;
-    register List *listRepPtr;
-    int i;
-    
+    Tcl_Obj *listPtr;
+    List *listRepPtr;
+
     TclDbNewObj(listPtr, file, line);
-    
-    if (objc > 0) {
-	Tcl_InvalidateStringRep(listPtr);
-	
-	elemPtrs = (Tcl_Obj **)
-	    ckalloc((unsigned) (objc * sizeof(Tcl_Obj *)));
-	for (i = 0;  i < objc;  i++) {
-	    elemPtrs[i] = objv[i];
-	    Tcl_IncrRefCount(elemPtrs[i]);
-	}
-	
-	listRepPtr = (List *) ckalloc(sizeof(List));
-	listRepPtr->maxElemCount = objc;
-	listRepPtr->elemCount    = objc;
-	listRepPtr->elements     = elemPtrs;
-	
-	listPtr->internalRep.twoPtrValue.ptr1 = (VOID *) listRepPtr;
-	listPtr->internalRep.twoPtrValue.ptr2 = NULL;
-	listPtr->typePtr = &tclListType;
+
+    if (objc <= 0) {
+	return listPtr;
     }
+
+    /*
+     * Create the internal rep.
+     */
+
+    listRepPtr = NewListIntRep(objc, objv, 1);
+
+    /*
+     * Now create the object.
+     */
+
+    TclInvalidateStringRep(listPtr);
+    ListSetIntRep(listPtr, listRepPtr);
+
     return listPtr;
 }
 
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewListObj(objc, objv, file, line)
-    int objc;			/* Count of objects referenced by objv. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to Tcl objects. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewListObj(
+    int objc,			/* Count of objects referenced by objv. */
+    Tcl_Obj *CONST objv[],	/* An array of pointers to Tcl objects. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewListObj(objc, objv);
 }
@@ -210,8 +324,8 @@ Tcl_DbNewListObj(objc, objv, file, line)
  *
  * Tcl_SetListObj --
  *
- *	Modify an object to be a list containing each of the objc elements
- *	of the object array referenced by objv.
+ *	Modify an object to be a list containing each of the objc elements of
+ *	the object array referenced by objv.
  *
  * Results:
  *	None.
@@ -219,61 +333,43 @@ Tcl_DbNewListObj(objc, objv, file, line)
  * Side effects:
  *	The object is made a list object and is initialized from the object
  *	pointers in objv. If objc is less than or equal to zero, an empty
- *	object is returned. The new object's string representation
- *	is left NULL. The ref counts of the elements in objv are incremented
- *	since the list now refers to them. The object's old string and
- *	internal representations are freed and its type is set NULL.
+ *	object is returned. The new object's string representation is left
+ *	NULL. The ref counts of the elements in objv are incremented since the
+ *	list now refers to them. The object's old string and internal
+ *	representations are freed and its type is set NULL.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetListObj(objPtr, objc, objv)
-    Tcl_Obj *objPtr;		/* Object whose internal rep to init. */
-    int objc;			/* Count of objects referenced by objv. */
-    Tcl_Obj *CONST objv[];	/* An array of pointers to Tcl objects. */
+Tcl_SetListObj(
+    Tcl_Obj *objPtr,		/* Object whose internal rep to init. */
+    int objc,			/* Count of objects referenced by objv. */
+    Tcl_Obj *CONST objv[])	/* An array of pointers to Tcl objects. */
 {
-    register Tcl_Obj **elemPtrs;
-    register List *listRepPtr;
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    int i;
+    List *listRepPtr;
 
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetListObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetListObj");
     }
-    
+
     /*
      * Free any old string rep and any internal rep for the old type.
      */
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
+    TclFreeIntRep(objPtr);
     objPtr->typePtr = NULL;
-    Tcl_InvalidateStringRep(objPtr);
-        
+    TclInvalidateStringRep(objPtr);
+
     /*
      * Set the object's type to "list" and initialize the internal rep.
-     * However, if there are no elements to put in the list, just give
-     * the object an empty string rep and a NULL type.
+     * However, if there are no elements to put in the list, just give the
+     * object an empty string rep and a NULL type.
      */
 
     if (objc > 0) {
-	elemPtrs = (Tcl_Obj **)
-	    ckalloc((unsigned) (objc * sizeof(Tcl_Obj *)));
-	for (i = 0;  i < objc;  i++) {
-	    elemPtrs[i] = objv[i];
-	    Tcl_IncrRefCount(elemPtrs[i]);
-	}
-	
-	listRepPtr = (List *) ckalloc(sizeof(List));
-	listRepPtr->maxElemCount = objc;
-	listRepPtr->elemCount    = objc;
-	listRepPtr->elements     = elemPtrs;
-	
-	objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) listRepPtr;
-	objPtr->internalRep.twoPtrValue.ptr2 = NULL;
-	objPtr->typePtr = &tclListType;
+	listRepPtr = NewListIntRep(objc, objv, 1);
+	ListSetIntRep(objPtr, listRepPtr);
     } else {
 	objPtr->bytes = tclEmptyStringRep;
 	objPtr->length = 0;
@@ -283,25 +379,66 @@ Tcl_SetListObj(objPtr, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
+ * TclListObjCopy --
+ *
+ *	Makes a "pure list" copy of a list value. This provides for the C
+ *	level a counterpart of the [lrange $list 0 end] command, while using
+ *	internals details to be as efficient as possible.
+ *
+ * Results:
+ *	Normally returns a pointer to a new Tcl_Obj, that contains the same
+ *	list value as *listPtr does. The returned Tcl_Obj has a refCount of
+ *	zero. If *listPtr does not hold a list, NULL is returned, and if
+ *	interp is non-NULL, an error message is recorded there.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclListObjCopy(
+    Tcl_Interp *interp,		/* Used to report errors if not NULL. */
+    Tcl_Obj *listPtr)		/* List object for which an element array is
+				 * to be returned. */
+{
+    Tcl_Obj *copyPtr;
+
+    if (listPtr->typePtr != &tclListType) {
+	if (SetListFromAny(interp, listPtr) != TCL_OK) {
+	    return NULL;
+	}
+    }
+
+    TclNewObj(copyPtr);
+    TclInvalidateStringRep(copyPtr);
+    DupListInternalRep(listPtr, copyPtr);
+    return copyPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_ListObjGetElements --
  *
- *	This procedure returns an (objc,objv) array of the elements in a
- *	list object.
+ *	This function returns an (objc,objv) array of the elements in a list
+ *	object.
  *
  * Results:
  *	The return value is normally TCL_OK; in this case *objcPtr is set to
  *	the count of list elements and *objvPtr is set to a pointer to an
- *	array of (*objcPtr) pointers to each list element. If listPtr does
- *	not refer to a list object and the object can not be converted to
- *	one, TCL_ERROR is returned and an error message will be left in
- *	the interpreter's result if interp is not NULL.
+ *	array of (*objcPtr) pointers to each list element. If listPtr does not
+ *	refer to a list object and the object can not be converted to one,
+ *	TCL_ERROR is returned and an error message will be left in the
+ *	interpreter's result if interp is not NULL.
  *
  *	The objects referenced by the returned array should be treated as
  *	readonly and their ref counts are _not_ incremented; the caller must
- *	do that if it holds on to a reference. Furthermore, the pointer
- *	and length returned by this procedure may change as soon as any
- *	procedure is called on the list object; be careful about retaining
- *	the pointer in a local data structure.
+ *	do that if it holds on to a reference. Furthermore, the pointer and
+ *	length returned by this function may change as soon as any function is
+ *	called on the list object; be careful about retaining the pointer in a
+ *	local data structure.
  *
  * Side effects:
  *	The possible conversion of the object referenced by listPtr
@@ -311,26 +448,33 @@ Tcl_SetListObj(objPtr, objc, objv)
  */
 
 int
-Tcl_ListObjGetElements(interp, listPtr, objcPtr, objvPtr)
-    Tcl_Interp *interp;		/* Used to report errors if not NULL. */
-    register Tcl_Obj *listPtr;	/* List object for which an element array
-				 * is to be returned. */
-    int *objcPtr;		/* Where to store the count of objects
+Tcl_ListObjGetElements(
+    Tcl_Interp *interp,		/* Used to report errors if not NULL. */
+    register Tcl_Obj *listPtr,	/* List object for which an element array is
+				 * to be returned. */
+    int *objcPtr,		/* Where to store the count of objects
 				 * referenced by objv. */
-    Tcl_Obj ***objvPtr;	        /* Where to store the pointer to an array
-				 * of pointers to the list's objects. */
+    Tcl_Obj ***objvPtr)		/* Where to store the pointer to an array of
+				 * pointers to the list's objects. */
 {
     register List *listRepPtr;
 
     if (listPtr->typePtr != &tclListType) {
-	int result = SetListFromAny(interp, listPtr);
+	int result;
+
+	if (listPtr->bytes == tclEmptyStringRep) {
+	    *objcPtr = 0;
+	    *objvPtr = NULL;
+	    return TCL_OK;
+	}
+	result = SetListFromAny(interp, listPtr);
 	if (result != TCL_OK) {
 	    return result;
 	}
     }
-    listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
+    listRepPtr = ListRepPtr(listPtr);
     *objcPtr = listRepPtr->elemCount;
-    *objvPtr = listRepPtr->elements;
+    *objvPtr = &listRepPtr->elements;
     return TCL_OK;
 }
 
@@ -339,50 +483,46 @@ Tcl_ListObjGetElements(interp, listPtr, objcPtr, objvPtr)
  *
  * Tcl_ListObjAppendList --
  *
- *	This procedure appends the objects in the list referenced by
+ *	This function appends the objects in the list referenced by
  *	elemListPtr to the list object referenced by listPtr. If listPtr is
  *	not already a list object, an attempt will be made to convert it to
  *	one.
  *
  * Results:
- *	The return value is normally TCL_OK. If listPtr or elemListPtr do
- *	not refer to list objects and they can not be converted to one,
- *	TCL_ERROR is returned and an error message is left in
- *	the interpreter's result if interp is not NULL.
+ *	The return value is normally TCL_OK. If listPtr or elemListPtr do not
+ *	refer to list objects and they can not be converted to one, TCL_ERROR
+ *	is returned and an error message is left in the interpreter's result
+ *	if interp is not NULL.
  *
  * Side effects:
  *	The reference counts of the elements in elemListPtr are incremented
  *	since the list now refers to them. listPtr and elemListPtr are
- *	converted, if necessary, to list objects. Also, appending the
- *	new elements may cause listObj's array of element pointers to grow.
+ *	converted, if necessary, to list objects. Also, appending the new
+ *	elements may cause listObj's array of element pointers to grow.
  *	listPtr's old string representation, if any, is invalidated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ListObjAppendList(interp, listPtr, elemListPtr)
-    Tcl_Interp *interp;		/* Used to report errors if not NULL. */
-    register Tcl_Obj *listPtr;	/* List object to append elements to. */
-    Tcl_Obj *elemListPtr;	/* List obj with elements to append. */
+Tcl_ListObjAppendList(
+    Tcl_Interp *interp,		/* Used to report errors if not NULL. */
+    register Tcl_Obj *listPtr,	/* List object to append elements to. */
+    Tcl_Obj *elemListPtr)	/* List obj with elements to append. */
 {
-    register List *listRepPtr;
     int listLen, objc, result;
     Tcl_Obj **objv;
 
     if (Tcl_IsShared(listPtr)) {
-	panic("Tcl_ListObjAppendList called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_ListObjAppendList");
     }
-    if (listPtr->typePtr != &tclListType) {
-	result = SetListFromAny(interp, listPtr);
-	if (result != TCL_OK) {
-	    return result;
-	}
+
+    result = TclListObjLength(interp, listPtr, &listLen);
+    if (result != TCL_OK) {
+	return result;
     }
-    listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
-    listLen = listRepPtr->elemCount;
 
-    result = Tcl_ListObjGetElements(interp, elemListPtr, &objc, &objv);
+    result = TclListObjGetElements(interp, elemListPtr, &objc, &objv);
     if (result != TCL_OK) {
 	return result;
     }
@@ -391,7 +531,7 @@ Tcl_ListObjAppendList(interp, listPtr, elemListPtr)
      * Insert objc new elements starting after the lists's last element.
      * Delete zero existing elements.
      */
-    
+
     return Tcl_ListObjReplace(interp, listPtr, listLen, 0, objc, objv);
 }
 
@@ -400,77 +540,102 @@ Tcl_ListObjAppendList(interp, listPtr, elemListPtr)
  *
  * Tcl_ListObjAppendElement --
  *
- *	This procedure is a special purpose version of
- *	Tcl_ListObjAppendList: it appends a single object referenced by
- *	objPtr to the list object referenced by listPtr. If listPtr is not
- *	already a list object, an attempt will be made to convert it to one.
+ *	This function is a special purpose version of Tcl_ListObjAppendList:
+ *	it appends a single object referenced by objPtr to the list object
+ *	referenced by listPtr. If listPtr is not already a list object, an
+ *	attempt will be made to convert it to one.
  *
  * Results:
- *	The return value is normally TCL_OK; in this case objPtr is added
- *	to the end of listPtr's list. If listPtr does not refer to a list
- *	object and the object can not be converted to one, TCL_ERROR is
- *	returned and an error message will be left in the interpreter's
- *	result if interp is not NULL.
+ *	The return value is normally TCL_OK; in this case objPtr is added to
+ *	the end of listPtr's list. If listPtr does not refer to a list object
+ *	and the object can not be converted to one, TCL_ERROR is returned and
+ *	an error message will be left in the interpreter's result if interp is
+ *	not NULL.
  *
  * Side effects:
- *	The ref count of objPtr is incremented since the list now refers 
- *	to it. listPtr will be converted, if necessary, to a list object.
- *	Also, appending the new element may cause listObj's array of element
- *	pointers to grow. listPtr's old string representation, if any,
- *	is invalidated.
+ *	The ref count of objPtr is incremented since the list now refers to
+ *	it. listPtr will be converted, if necessary, to a list object. Also,
+ *	appending the new element may cause listObj's array of element
+ *	pointers to grow. listPtr's old string representation, if any, is
+ *	invalidated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ListObjAppendElement(interp, listPtr, objPtr)
-    Tcl_Interp *interp;		/* Used to report errors if not NULL. */
-    Tcl_Obj *listPtr;		/* List object to append objPtr to. */
-    Tcl_Obj *objPtr;		/* Object to append to listPtr's list. */
+Tcl_ListObjAppendElement(
+    Tcl_Interp *interp,		/* Used to report errors if not NULL. */
+    Tcl_Obj *listPtr,		/* List object to append objPtr to. */
+    Tcl_Obj *objPtr)		/* Object to append to listPtr's list. */
 {
     register List *listRepPtr;
     register Tcl_Obj **elemPtrs;
-    int numElems, numRequired;
-    
+    int numElems, numRequired, newMax, newSize, i;
+
     if (Tcl_IsShared(listPtr)) {
-	panic("Tcl_ListObjAppendElement called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_ListObjAppendElement");
     }
     if (listPtr->typePtr != &tclListType) {
-	int result = SetListFromAny(interp, listPtr);
+	int result;
+
+	if (listPtr->bytes == tclEmptyStringRep) {
+	    Tcl_SetListObj(listPtr, 1, &objPtr);
+	    return TCL_OK;
+	}
+	result = SetListFromAny(interp, listPtr);
 	if (result != TCL_OK) {
 	    return result;
 	}
     }
 
-    listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
-    elemPtrs = listRepPtr->elements;
+    listRepPtr = ListRepPtr(listPtr);
     numElems = listRepPtr->elemCount;
     numRequired = numElems + 1 ;
-    
+
     /*
-     * If there is no room in the current array of element pointers,
-     * allocate a new, larger array and copy the pointers to it.
+     * If there is no room in the current array of element pointers, allocate
+     * a new, larger array and copy the pointers to it. If the List struct is
+     * shared, allocate a new one.
      */
 
-    if (numRequired > listRepPtr->maxElemCount) {
-	int newMax = (2 * numRequired);
-	Tcl_Obj **newElemPtrs = (Tcl_Obj **)
-	    ckalloc((unsigned) (newMax * sizeof(Tcl_Obj *)));
-	
-	memcpy((VOID *) newElemPtrs, (VOID *) elemPtrs,
-	       (size_t) (numElems * sizeof(Tcl_Obj *)));
+    if (numRequired > listRepPtr->maxElemCount){
+	newMax = 2 * numRequired;
+	newSize = sizeof(List) + ((newMax-1) * sizeof(Tcl_Obj *));
+    } else {
+	newMax = listRepPtr->maxElemCount;
+	newSize = 0;
+    }
+
+    if (listRepPtr->refCount > 1) {
+	List *oldListRepPtr = listRepPtr;
+	Tcl_Obj **oldElems;
 
+	listRepPtr = AttemptNewList(interp, newMax, NULL);
+	if (listRepPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	oldElems = &oldListRepPtr->elements;
+	elemPtrs = &listRepPtr->elements;
+	for (i=0; i<numElems; i++) {
+	    elemPtrs[i] = oldElems[i];
+	    Tcl_IncrRefCount(elemPtrs[i]);
+	}
+	listRepPtr->elemCount = numElems;
+	listRepPtr->refCount++;
+	oldListRepPtr->refCount--;
+	listPtr->internalRep.twoPtrValue.ptr1 = (void *) listRepPtr;
+    } else if (newSize) {
+	listRepPtr = (List *) ckrealloc((char *)listRepPtr, (size_t)newSize);
 	listRepPtr->maxElemCount = newMax;
-	listRepPtr->elements = newElemPtrs;
-	ckfree((char *) elemPtrs);
-	elemPtrs = newElemPtrs;
+	listPtr->internalRep.twoPtrValue.ptr1 = (void *) listRepPtr;
     }
 
     /*
-     * Add objPtr to the end of listPtr's array of element
-     * pointers. Increment the ref count for the (now shared) objPtr.
+     * Add objPtr to the end of listPtr's array of element pointers. Increment
+     * the ref count for the (now shared) objPtr.
      */
 
+    elemPtrs = &listRepPtr->elements;
     elemPtrs[numElems] = objPtr;
     Tcl_IncrRefCount(objPtr);
     listRepPtr->elemCount++;
@@ -480,7 +645,7 @@ Tcl_ListObjAppendElement(interp, listPtr, objPtr)
      * representation has changed.
      */
 
-    Tcl_InvalidateStringRep(listPtr);
+    TclInvalidateStringRep(listPtr);
     return TCL_OK;
 }
 
@@ -489,20 +654,20 @@ Tcl_ListObjAppendElement(interp, listPtr, objPtr)
  *
  * Tcl_ListObjIndex --
  *
- *	This procedure returns a pointer to the index'th object from the
- *	list referenced by listPtr. The first element has index 0. If index
- *	is negative or greater than or equal to the number of elements in
- *	the list, a NULL is returned. If listPtr is not a list object, an
- *	attempt will be made to convert it to a list.
+ *	This function returns a pointer to the index'th object from the list
+ *	referenced by listPtr. The first element has index 0. If index is
+ *	negative or greater than or equal to the number of elements in the
+ *	list, a NULL is returned. If listPtr is not a list object, an attempt
+ *	will be made to convert it to a list.
  *
  * Results:
- *	The return value is normally TCL_OK; in this case objPtrPtr is set
- *	to the Tcl_Obj pointer for the index'th list element or NULL if
- *	index is out of range. This object should be treated as readonly and
- *	its ref count is _not_ incremented; the caller must do that if it
- *	holds on to the reference. If listPtr does not refer to a list and
- *	can't be converted to one, TCL_ERROR is returned and an error
- *	message is left in the interpreter's result if interp is not NULL.
+ *	The return value is normally TCL_OK; in this case objPtrPtr is set to
+ *	the Tcl_Obj pointer for the index'th list element or NULL if index is
+ *	out of range. This object should be treated as readonly and its ref
+ *	count is _not_ incremented; the caller must do that if it holds on to
+ *	the reference. If listPtr does not refer to a list and can't be
+ *	converted to one, TCL_ERROR is returned and an error message is left
+ *	in the interpreter's result if interp is not NULL.
  *
  * Side effects:
  *	listPtr will be converted, if necessary, to a list object.
@@ -511,28 +676,34 @@ Tcl_ListObjAppendElement(interp, listPtr, objPtr)
  */
 
 int
-Tcl_ListObjIndex(interp, listPtr, index, objPtrPtr)
-    Tcl_Interp *interp;		/* Used to report errors if not NULL. */
-    register Tcl_Obj *listPtr;	/* List object to index into. */
-    register int index;		/* Index of element to return. */
-    Tcl_Obj **objPtrPtr;	/* The resulting Tcl_Obj* is stored here. */
+Tcl_ListObjIndex(
+    Tcl_Interp *interp,		/* Used to report errors if not NULL. */
+    register Tcl_Obj *listPtr,	/* List object to index into. */
+    register int index,		/* Index of element to return. */
+    Tcl_Obj **objPtrPtr)	/* The resulting Tcl_Obj* is stored here. */
 {
     register List *listRepPtr;
-    
+
     if (listPtr->typePtr != &tclListType) {
-	int result = SetListFromAny(interp, listPtr);
+	int result;
+
+	if (listPtr->bytes == tclEmptyStringRep) {
+	    *objPtrPtr = NULL;
+	    return TCL_OK;
+	}
+	result = SetListFromAny(interp, listPtr);
 	if (result != TCL_OK) {
 	    return result;
 	}
     }
 
-    listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
+    listRepPtr = ListRepPtr(listPtr);
     if ((index < 0) || (index >= listRepPtr->elemCount)) {
 	*objPtrPtr = NULL;
     } else {
-	*objPtrPtr = listRepPtr->elements[index];
+	*objPtrPtr = (&listRepPtr->elements)[index];
     }
-    
+
     return TCL_OK;
 }
 
@@ -541,16 +712,16 @@ Tcl_ListObjIndex(interp, listPtr, index, objPtrPtr)
  *
  * Tcl_ListObjLength --
  *
- *	This procedure returns the number of elements in a list object. If
- *	the object is not already a list object, an attempt will be made to
+ *	This function returns the number of elements in a list object. If the
+ *	object is not already a list object, an attempt will be made to
  *	convert it to one.
  *
  * Results:
- *	The return value is normally TCL_OK; in this case *intPtr will be
- *	set to the integer count of list elements. If listPtr does not refer
- *	to a list object and the object can not be converted to one,
- *	TCL_ERROR is returned and an error message will be left in
- *	the interpreter's result if interp is not NULL.
+ *	The return value is normally TCL_OK; in this case *intPtr will be set
+ *	to the integer count of list elements. If listPtr does not refer to a
+ *	list object and the object can not be converted to one, TCL_ERROR is
+ *	returned and an error message will be left in the interpreter's result
+ *	if interp is not NULL.
  *
  * Side effects:
  *	The possible conversion of the argument object to a list object.
@@ -559,21 +730,27 @@ Tcl_ListObjIndex(interp, listPtr, index, objPtrPtr)
  */
 
 int
-Tcl_ListObjLength(interp, listPtr, intPtr)
-    Tcl_Interp *interp;		/* Used to report errors if not NULL. */
-    register Tcl_Obj *listPtr;	/* List object whose #elements to return. */
-    register int *intPtr;	/* The resulting int is stored here. */
+Tcl_ListObjLength(
+    Tcl_Interp *interp,		/* Used to report errors if not NULL. */
+    register Tcl_Obj *listPtr,	/* List object whose #elements to return. */
+    register int *intPtr)	/* The resulting int is stored here. */
 {
     register List *listRepPtr;
-    
+
     if (listPtr->typePtr != &tclListType) {
-	int result = SetListFromAny(interp, listPtr);
+	int result;
+
+	if (listPtr->bytes == tclEmptyStringRep) {
+	    *intPtr = 0;
+	    return TCL_OK;
+	}
+	result = SetListFromAny(interp, listPtr);
 	if (result != TCL_OK) {
 	    return result;
 	}
     }
 
-    listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
+    listRepPtr = ListRepPtr(listPtr);
     *intPtr = listRepPtr->elemCount;
     return TCL_OK;
 }
@@ -582,456 +759,491 @@ Tcl_ListObjLength(interp, listPtr, intPtr)
  *----------------------------------------------------------------------
  *
  * Tcl_ListObjReplace --
- * 
- *	This procedure replaces zero or more elements of the list referenced
- *	by listPtr with the objects from an (objc,objv) array. 
- *	The objc elements of the array referenced by objv replace the
- *	count elements in listPtr starting at first.
+ *
+ *	This function replaces zero or more elements of the list referenced by
+ *	listPtr with the objects from an (objc,objv) array. The objc elements
+ *	of the array referenced by objv replace the count elements in listPtr
+ *	starting at first.
  *
  *	If the argument first is zero or negative, it refers to the first
  *	element. If first is greater than or equal to the number of elements
  *	in the list, then no elements are deleted; the new elements are
- *	appended to the list. Count gives the number of elements to
- *	replace. If count is zero or negative then no elements are deleted;
- *	the new elements are simply inserted before first.
+ *	appended to the list. Count gives the number of elements to replace.
+ *	If count is zero or negative then no elements are deleted; the new
+ *	elements are simply inserted before first.
  *
  *	The argument objv refers to an array of objc pointers to the new
- *	elements to be added to listPtr in place of those that were
- *	deleted. If objv is NULL, no new elements are added. If listPtr is
- *	not a list object, an attempt will be made to convert it to one.
+ *	elements to be added to listPtr in place of those that were deleted.
+ *	If objv is NULL, no new elements are added. If listPtr is not a list
+ *	object, an attempt will be made to convert it to one.
  *
  * Results:
- *	The return value is normally TCL_OK. If listPtr does
- *	not refer to a list object and can not be converted to one,
- *	TCL_ERROR is returned and an error message will be left in
- *	the interpreter's result if interp is not NULL.
+ *	The return value is normally TCL_OK. If listPtr does not refer to a
+ *	list object and can not be converted to one, TCL_ERROR is returned and
+ *	an error message will be left in the interpreter's result if interp is
+ *	not NULL.
  *
  * Side effects:
- *	The ref counts of the objc elements in objv are incremented since
- *	the resulting list now refers to them. Similarly, the ref counts for
- *	replaced objects are decremented. listPtr is converted, if
- *	necessary, to a list object. listPtr's old string representation, if
- *	any, is freed. 
+ *	The ref counts of the objc elements in objv are incremented since the
+ *	resulting list now refers to them. Similarly, the ref counts for
+ *	replaced objects are decremented. listPtr is converted, if necessary,
+ *	to a list object. listPtr's old string representation, if any, is
+ *	freed.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ListObjReplace(interp, listPtr, first, count, objc, objv)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *listPtr;		/* List object whose elements to replace. */
-    int first;			/* Index of first element to replace. */
-    int count;			/* Number of elements to replace. */
-    int objc;			/* Number of objects to insert. */
-    Tcl_Obj *CONST objv[];	/* An array of objc pointers to Tcl objects
-				 * to insert. */
+Tcl_ListObjReplace(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *listPtr,		/* List object whose elements to replace. */
+    int first,			/* Index of first element to replace. */
+    int count,			/* Number of elements to replace. */
+    int objc,			/* Number of objects to insert. */
+    Tcl_Obj *CONST objv[])	/* An array of objc pointers to Tcl objects to
+				 * insert. */
 {
     List *listRepPtr;
-    register Tcl_Obj **elemPtrs, **newPtrs;
-    Tcl_Obj *victimPtr;
-    int numElems, numRequired, numAfterLast;
-    int start, shift, newMax, i, j, result;
-     
+    register Tcl_Obj **elemPtrs;
+    int numElems, numRequired, numAfterLast, start, i, j, isShared;
+
     if (Tcl_IsShared(listPtr)) {
-	panic("Tcl_ListObjReplace called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_ListObjReplace");
     }
     if (listPtr->typePtr != &tclListType) {
-	result = SetListFromAny(interp, listPtr);
-	if (result != TCL_OK) {
-	    return result;
+	if (listPtr->bytes == tclEmptyStringRep) {
+	    if (objc) {
+		Tcl_SetListObj(listPtr, objc, NULL);
+	    } else {
+		return TCL_OK;
+	    }
+	} else {
+	    int result = SetListFromAny(interp, listPtr);
+
+	    if (result != TCL_OK) {
+		return result;
+	    }
 	}
     }
-    listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
-    elemPtrs = listRepPtr->elements;
+
+    /*
+     * Note that when count == 0 and objc == 0, this routine is logically a
+     * no-op, removing and adding no elements to the list. However, by flowing
+     * through this routine anyway, we get the important side effect that the
+     * resulting listPtr is a list in canoncial form. This is important.
+     * Resist any temptation to optimize this case.
+     */
+
+    listRepPtr = ListRepPtr(listPtr);
+    elemPtrs = &listRepPtr->elements;
     numElems = listRepPtr->elemCount;
 
-    if (first < 0)  {
-    	first = 0;
+    if (first < 0) {
+	first = 0;
     }
     if (first >= numElems) {
-	first = numElems;	/* so we'll insert after last element */
+	first = numElems;	/* So we'll insert after last element. */
     }
     if (count < 0) {
 	count = 0;
+    } else if (numElems < first+count || first+count < 0) {
+	/*
+	 * The 'first+count < 0' condition here guards agains integer
+	 * overflow in determining 'first+count'
+	 */
+	count = numElems - first;
     }
-    
+
+    isShared = (listRepPtr->refCount > 1);
+    numRequired = numElems - count + objc;
+
     for (i = 0;  i < objc;  i++) {
 	Tcl_IncrRefCount(objv[i]);
     }
 
-    numRequired = (numElems - count + objc);
-    if (numRequired <= listRepPtr->maxElemCount) {
+    if ((numRequired <= listRepPtr->maxElemCount) && !isShared) {
+	int shift;
+
 	/*
-	 * Enough room in the current array. First "delete" count
-	 * elements starting at first.
+	 * Can use the current List struct. First "delete" count elements
+	 * starting at first.
 	 */
 
-	for (i = 0, j = first;  i < count;  i++, j++) {
-	    victimPtr = elemPtrs[j];
+	for (j = first;  j < first + count;  j++) {
+	    Tcl_Obj *victimPtr = elemPtrs[j];
+
 	    TclDecrRefCount(victimPtr);
 	}
 
 	/*
-	 * Shift the elements after the last one removed to their
-	 * new locations.
+	 * Shift the elements after the last one removed to their new
+	 * locations.
 	 */
 
-	start = (first + count);
-	numAfterLast = (numElems - start);
-	shift = (objc - count);	/* numNewElems - numDeleted */
+	start = first + count;
+	numAfterLast = numElems - start;
+	shift = objc - count;	/* numNewElems - numDeleted */
 	if ((numAfterLast > 0) && (shift != 0)) {
-	    Tcl_Obj **src, **dst;
+	    Tcl_Obj **src = elemPtrs + start;
 
-	    src = elemPtrs + start; dst = src + shift;
-	    memmove((VOID*) dst, (VOID*) src, 
-	            (size_t) (numAfterLast * sizeof(Tcl_Obj*)));
+	    memmove(src+shift, src, (size_t) numAfterLast * sizeof(Tcl_Obj*));
 	}
-
+    } else {
 	/*
-	 * Insert the new elements into elemPtrs before "first".
+	 * Cannot use the current List struct; it is shared, too small, or
+	 * both. Allocate a new struct and insert elements into it.
 	 */
 
-	for (i = 0, j = first;  i < objc;  i++, j++) {
-            elemPtrs[j] = objv[i];
-        }
+	List *oldListRepPtr = listRepPtr;
+	Tcl_Obj **oldPtrs = elemPtrs;
+	int newMax;
 
-	/*
-	 * Update the count of elements.
-	 */
+	if (numRequired > listRepPtr->maxElemCount){
+	    newMax = 2 * numRequired;
+	} else {
+	    newMax = listRepPtr->maxElemCount;
+	}
 
-	listRepPtr->elemCount = numRequired;
-    } else {
-	/*
-	 * Not enough room in the current array. Allocate a larger array and
-	 * insert elements into it. 
-	 */
+	listRepPtr = AttemptNewList(interp, newMax, NULL);
+	if (listRepPtr == NULL) {
+	    for (i = 0;  i < objc;  i++) {
+		/* See bug 3598580 */
+#if TCL_MAJOR_VERSION > 8
+		Tcl_DecrRefCount(objv[i]);
+#else
+		objv[i]->refCount--;
+#endif
+	    }
+	    return TCL_ERROR;
+	}
 
-	newMax = (2 * numRequired);
-	newPtrs = (Tcl_Obj **)
-	    ckalloc((unsigned) (newMax * sizeof(Tcl_Obj *)));
+	listPtr->internalRep.twoPtrValue.ptr1 = (void *) listRepPtr;
+	listRepPtr->refCount++;
 
-	/*
-	 * Copy over the elements before "first".
-	 */
+	elemPtrs = &listRepPtr->elements;
 
-	if (first > 0) {
-	    memcpy((VOID *) newPtrs, (VOID *) elemPtrs,
-		    (size_t) (first * sizeof(Tcl_Obj *)));
-	}
+	if (isShared) {
+	    /*
+	     * The old struct will remain in place; need new refCounts for the
+	     * new List struct references. Copy over only the surviving
+	     * elements.
+	     */
 
-	/*
-	 * "Delete" count elements starting at first.
-	 */
+	    for (i=0; i < first; i++) {
+		elemPtrs[i] = oldPtrs[i];
+		Tcl_IncrRefCount(elemPtrs[i]);
+	    }
+	    for (i = first + count, j = first + objc;
+		    j < numRequired; i++, j++) {
+		elemPtrs[j] = oldPtrs[i];
+		Tcl_IncrRefCount(elemPtrs[j]);
+	    }
 
-	for (i = 0, j = first;  i < count;  i++, j++) {
-	    victimPtr = elemPtrs[j];
-	    TclDecrRefCount(victimPtr);
-	}
+	    oldListRepPtr->refCount--;
+	} else {
+	    /*
+	     * The old struct will be removed; use its inherited refCounts.
+	     */
 
-	/*
-	 * Copy the elements after the last one removed, shifted to
-	 * their new locations.
-	 */
+	    if (first > 0) {
+		memcpy(elemPtrs, oldPtrs, (size_t) first * sizeof(Tcl_Obj *));
+	    }
 
-	start = (first + count);
-	numAfterLast = (numElems - start);
-	if (numAfterLast > 0) {
-	    memcpy((VOID *) &(newPtrs[first + objc]),
-		    (VOID *) &(elemPtrs[start]),
-		    (size_t) (numAfterLast * sizeof(Tcl_Obj *)));
-	}
-	
-	/*
-	 * Insert the new elements before "first" and update the
-	 * count of elements.
-	 */
+	    /*
+	     * "Delete" count elements starting at first.
+	     */
+
+	    for (j = first;  j < first + count;  j++) {
+		Tcl_Obj *victimPtr = oldPtrs[j];
+
+		TclDecrRefCount(victimPtr);
+	    }
+
+	    /*
+	     * Copy the elements after the last one removed, shifted to their
+	     * new locations.
+	     */
+
+	    start = first + count;
+	    numAfterLast = numElems - start;
+	    if (numAfterLast > 0) {
+		memcpy(elemPtrs + first + objc, oldPtrs + start,
+			(size_t) numAfterLast * sizeof(Tcl_Obj *));
+	    }
 
-	for (i = 0, j = first;  i < objc;  i++, j++) {
-	    newPtrs[j] = objv[i];
+	    ckfree((char *) oldListRepPtr);
 	}
+    }
 
-	listRepPtr->elemCount = numRequired;
-	listRepPtr->maxElemCount = newMax;
-	listRepPtr->elements = newPtrs;
-	ckfree((char *) elemPtrs);
+    /*
+     * Insert the new elements into elemPtrs before "first".
+     */
+
+    for (i=0,j=first ; i<objc ; i++,j++) {
+	elemPtrs[j] = objv[i];
     }
-    
+
+    /*
+     * Update the count of elements.
+     */
+
+    listRepPtr->elemCount = numRequired;
+
     /*
      * Invalidate and free any old string representation since it no longer
      * reflects the list's internal representation.
      */
 
-    Tcl_InvalidateStringRep(listPtr);
+    TclInvalidateStringRep(listPtr);
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclLsetList --
- *	
- *	Core of the 'lset' command when objc == 4.  Objv[2] may be
- *	either a scalar index or a list of indices.
+ * TclLindexList --
+ *
+ *	This procedure handles the 'lindex' command when objc==3.
  *
  * Results:
- *	Returns the new value of the list variable, or NULL if an
- *	error occurs.
+ *	Returns a pointer to the object extracted, or NULL if an error
+ *	occurred. The returned object already includes one reference count for
+ *	the pointer returned.
  *
  * Side effects:
- *	Surgery is performed on the list value to produce the
- *	result.
- *
- * On entry, the reference count of the variable value does not reflect
- * any references held on the stack.  The first action of this function
- * is to determine whether the object is shared, and to duplicate it if
- * it is.  The reference count of the duplicate is incremented.
- * At this point, the reference count will be 1 for either case, so that
- * the object will appear to be unshared.
- *
- * If an error occurs, and the object has been duplicated, the reference
- * count on the duplicate is decremented so that it is now 0: this dismisses
- * any memory that was allocated by this procedure.
- *
- * If no error occurs, the reference count of the original object is
- * incremented if the object has not been duplicated, and nothing is
- * done to a reference count of the duplicate.  Now the reference count
- * of an unduplicated object is 2 (the returned pointer, plus the one
- * stored in the variable).  The reference count of a duplicate object
- * is 1, reflecting that the returned pointer is the only active
- * reference.  The caller is expected to store the returned value back
- * in the variable and decrement its reference count.  (INST_STORE_*
- * does exactly this.)
- *
- * Tcl_LsetFlat and related functions maintain a linked list of
- * Tcl_Obj's whose string representations must be spoilt by threading
- * via 'ptr2' of the two-pointer internal representation.  On entry
- * to Tcl_LsetList, the values of 'ptr2' are immaterial; on exit,
- * the 'ptr2' field of any Tcl_Obj that has been modified is set to
- * NULL.
+ *	None.
+ *
+ * Notes:
+ *	This procedure is implemented entirely as a wrapper around
+ *	TclLindexFlat. All it does is reconfigure the argument format into the
+ *	form required by TclLindexFlat, while taking care to manage shimmering
+ *	in such a way that we tend to keep the most useful intreps and/or
+ *	avoid the most expensive conversions.
  *
  *----------------------------------------------------------------------
  */
 
-Tcl_Obj*
-TclLsetList( interp, listPtr, indexArgPtr, valuePtr )
-    Tcl_Interp* interp;		/* Tcl interpreter */
-    Tcl_Obj* listPtr;		/* Pointer to the list being modified */
-    Tcl_Obj* indexArgPtr;	/* Index or index-list arg to 'lset' */
-    Tcl_Obj* valuePtr;		/* Value arg to 'lset' */
+Tcl_Obj *
+TclLindexList(
+    Tcl_Interp *interp,		/* Tcl interpreter. */
+    Tcl_Obj *listPtr,		/* List being unpacked. */
+    Tcl_Obj *argPtr)		/* Index or index list. */
 {
-    int indexCount;		/* Number of indices in the index list */
-    Tcl_Obj** indices;		/* Vector of indices in the index list*/
-
-    int duplicated;		/* Flag == 1 if the obj has been
-				 * duplicated, 0 otherwise */
-    Tcl_Obj* retValuePtr;	/* Pointer to the list to be returned */
-    int index;			/* Current index in the list - discarded */
-    int result;			/* Status return from library calls */
-    Tcl_Obj* subListPtr;	/* Pointer to the current sublist */
-    int elemCount;		/* Count of elements in the current sublist */
-    Tcl_Obj** elemPtrs;		/* Pointers to elements of current sublist  */
-    Tcl_Obj* chainPtr;		/* Pointer to the enclosing sublist
-				 * of the current sublist */
-    int i;
 
+    int index;			/* Index into the list. */
+    Tcl_Obj **indices;		/* Array of list indices. */
+    int indexCount;		/* Size of the array of list indices. */
+    Tcl_Obj *indexListCopy;
 
     /*
-     * Determine whether the index arg designates a list or a single
-     * index.  We have to be careful about the order of the checks to
-     * avoid repeated shimmering; see TIP #22 and #23 for details.
+     * Determine whether argPtr designates a list or a single index. We have
+     * to be careful about the order of the checks to avoid repeated
+     * shimmering; see TIP#22 and TIP#33 for the details.
      */
 
-    if ( indexArgPtr->typePtr != &tclListType
-	 && TclGetIntForIndex( NULL, indexArgPtr, 0, &index ) == TCL_OK ) {
-
-	/*
-	 * indexArgPtr designates a single index.
-	 */
-
-	return TclLsetFlat( interp, listPtr, 1, &indexArgPtr, valuePtr );
-
-    } else if ( Tcl_ListObjGetElements( NULL, indexArgPtr,
-					&indexCount, &indices ) != TCL_OK ) {
-
+    if (argPtr->typePtr != &tclListType
+	    && TclGetIntForIndexM(NULL , argPtr, 0, &index) == TCL_OK) {
 	/*
-	 * indexArgPtr designates something that is neither an index nor a
-	 * well formed list.  Report the error via TclLsetFlat.
+	 * argPtr designates a single index.
 	 */
 
-	return TclLsetFlat( interp, listPtr, 1, &indexArgPtr, valuePtr );
-
+	return TclLindexFlat(interp, listPtr, 1, &argPtr);
     }
 
     /*
-     * At this point, we know that argPtr designates a well formed list,
-     * and the 'else if' above has parsed it into indexCount and indices.
-     * If there are no indices, simply return 'valuePtr', counting the
-     * returned pointer as a reference.
+     * Here we make a private copy of the index list argument to avoid any
+     * shimmering issues that might invalidate the indices array below while
+     * we are still using it. This is probably unnecessary. It does not appear
+     * that any damaging shimmering is possible, and no test has been devised
+     * to show any error when this private copy is not made. But it's cheap,
+     * and it offers some future-proofing insurance in case the TclLindexFlat
+     * implementation changes in some unexpected way, or some new form of
+     * trace or callback permits things to happen that the current
+     * implementation does not.
      */
 
-    if ( indexCount == 0 ) {
-	Tcl_IncrRefCount( valuePtr );
-	return valuePtr;
-    }
-
-    /*
-     * Duplicate the list arg if necessary.
-     */
+    indexListCopy = TclListObjCopy(NULL, argPtr);
+    if (indexListCopy == NULL) {
+	/*
+	 * argPtr designates something that is neither an index nor a
+	 * well-formed list. Report the error via TclLindexFlat.
+	 */
 
-    if ( Tcl_IsShared( listPtr ) ) {
-	duplicated = 1;
-	listPtr = Tcl_DuplicateObj( listPtr );
-	Tcl_IncrRefCount( listPtr );
-    } else {
-	duplicated = 0;
+	return TclLindexFlat(interp, listPtr, 1, &argPtr);
     }
 
-    /*
-     * It would be tempting simply to go off to TclLsetFlat to finish the
-     * processing.  Alas, it is also incorrect!  The problem is that
-     * 'indexArgPtr' may designate a sublist of 'listPtr' whose value
-     * is to be manipulated.  The fact that 'listPtr' is itself unshared
-     * does not guarantee that no sublist is.  Therefore, it's necessary
-     * to replicate all the work here, expanding the index list on each
-     * trip through the loop.
-     */
-
-    /*
-     * Anchor the linked list of Tcl_Obj's whose string reps must be
-     * invalidated if the operation succeeds.
-     */
+    TclListObjGetElements(NULL, indexListCopy, &indexCount, &indices);
+    listPtr = TclLindexFlat(interp, listPtr, indexCount, indices);
+    Tcl_DecrRefCount(indexListCopy);
+    return listPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclLindexFlat --
+ *
+ *	This procedure is the core of the 'lindex' command, with all index
+ *	arguments presented as a flat list.
+ *
+ * Results:
+ *	Returns a pointer to the object extracted, or NULL if an error
+ *	occurred. The returned object already includes one reference count for
+ *	the pointer returned.
+ *
+ * Side effects:
+ *	None.
+ *
+ * Notes:
+ *	The reference count of the returned object includes one reference
+ *	corresponding to the pointer returned. Thus, the calling code will
+ *	usually do something like:
+ *		Tcl_SetObjResult(interp, result);
+ *		Tcl_DecrRefCount(result);
+ *
+ *----------------------------------------------------------------------
+ */
 
-    retValuePtr = listPtr;
-    chainPtr = NULL;
+Tcl_Obj *
+TclLindexFlat(
+    Tcl_Interp *interp,		/* Tcl interpreter. */
+    Tcl_Obj *listPtr,		/* Tcl object representing the list. */
+    int indexCount,		/* Count of indices. */
+    Tcl_Obj *const indexArray[])/* Array of pointers to Tcl objects that
+				 * represent the indices in the list. */
+{
+    int i;
 
-    /*
-     * Handle each index arg by diving into the appropriate sublist
-     */
+    Tcl_IncrRefCount(listPtr);
 
-    for ( i = 0; ; ++i ) {
+    for (i=0 ; i<indexCount && listPtr ; i++) {
+	int index, listLen;
+	Tcl_Obj **elemPtrs, *sublistCopy;
 
 	/*
-	 * Take the sublist apart.
+	 * Here we make a private copy of the current sublist, so we avoid any
+	 * shimmering issues that might invalidate the elemPtr array below
+	 * while we are still using it. See test lindex-8.4.
 	 */
 
-	result = Tcl_ListObjGetElements( interp, listPtr,
-					 &elemCount, &elemPtrs );
-	if ( result != TCL_OK ) {
-	    break;
-	}
-	listPtr->internalRep.twoPtrValue.ptr2 = (VOID *) chainPtr;
-
-	/*
-	 * Reconstitute the index array
-	 */
+	sublistCopy = TclListObjCopy(interp, listPtr);
+	Tcl_DecrRefCount(listPtr);
+	listPtr = NULL;
 
-	result = Tcl_ListObjGetElements( interp, indexArgPtr,
-					 &indexCount, &indices );
-	if ( result != TCL_OK ) {
-	    /* 
-	     * Shouldn't be able to get here, because we already
-	     * parsed the thing successfully once.
+	if (sublistCopy == NULL) {
+	    /*
+	     * The sublist is not a list at all => error.
 	     */
-	    break;
-	}
-
-	/*
-	 * Determine the index of the requested element.
-	 */
-
-	result = TclGetIntForIndex( interp, indices[ i ],
-				    (elemCount - 1), &index );
-	if ( result != TCL_OK ) {
-	    break;
-	}
-	
-	/*
-	 * Check that the index is in range.
-	 */
 
-	if ( ( index < 0 ) || ( index >= elemCount ) ) {
-	    Tcl_SetObjResult( interp,
-			      Tcl_NewStringObj( "list index out of range",
-						-1 ) );
-	    result = TCL_ERROR;
 	    break;
 	}
+	TclListObjGetElements(NULL, sublistCopy, &listLen, &elemPtrs);
+
+	if (TclGetIntForIndexM(interp, indexArray[i], /*endValue*/ listLen-1,
+		&index) == TCL_OK) {
+	    if (index<0 || index>=listLen) {
+		/*
+		 * Index is out of range. Break out of loop with empty result.
+		 * First check remaining indices for validity
+		 */
 
-	/*
-	 * Break the loop after extracting the innermost sublist
-	 */
-
-	if ( i >= indexCount-1 ) {
-	    result = TCL_OK;
-	    break;
-	}
-	
-	/*
-	 * Extract the appropriate sublist, and make sure that it is unshared.
-	 */
-
-	subListPtr = elemPtrs[ index ];
-	if ( Tcl_IsShared( subListPtr ) ) {
-	    subListPtr = Tcl_DuplicateObj( subListPtr );
-	    result = TclListObjSetElement( interp, listPtr, index,
-					    subListPtr );
-	    if ( result != TCL_OK ) {
-		/* 
-		 * We actually shouldn't be able to get here, because
-		 * we've already checked everything that TclListObjSetElement
-		 * checks. If we were to get here, it would result in leaking
-		 * subListPtr.
+		while (++i < indexCount) {
+		    if (TclGetIntForIndexM(interp, indexArray[i], -1, &index)
+			!= TCL_OK) {
+			Tcl_DecrRefCount(sublistCopy);
+			return NULL;
+		    }
+		}
+		listPtr = Tcl_NewObj();
+	    } else {
+		/*
+		 * Extract the pointer to the appropriate element.
 		 */
-		break;
+
+		listPtr = elemPtrs[index];
 	    }
+	    Tcl_IncrRefCount(listPtr);
 	}
+	Tcl_DecrRefCount(sublistCopy);
+    }
 
-	/* 
-	 * Chain the current sublist onto the linked list of Tcl_Obj's
-	 * whose string reps must be spoilt.
-	 */
-
-	chainPtr = listPtr;
-	listPtr = subListPtr;
+    return listPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclLsetList --
+ *
+ *	Core of the 'lset' command when objc == 4. Objv[2] may be either a
+ *	scalar index or a list of indices.
+ *
+ * Results:
+ *	Returns the new value of the list variable, or NULL if there was an
+ *	error. The returned object includes one reference count for the
+ *	pointer returned.
+ *
+ * Side effects:
+ *	None.
+ *
+ * Notes:
+ *	This procedure is implemented entirely as a wrapper around
+ *	TclLsetFlat. All it does is reconfigure the argument format into the
+ *	form required by TclLsetFlat, while taking care to manage shimmering
+ *	in such a way that we tend to keep the most useful intreps and/or
+ *	avoid the most expensive conversions.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    }
+Tcl_Obj *
+TclLsetList(
+    Tcl_Interp *interp,		/* Tcl interpreter. */
+    Tcl_Obj *listPtr,		/* Pointer to the list being modified. */
+    Tcl_Obj *indexArgPtr,	/* Index or index-list arg to 'lset'. */
+    Tcl_Obj *valuePtr)		/* Value arg to 'lset'. */
+{
+    int indexCount;		/* Number of indices in the index list. */
+    Tcl_Obj **indices;		/* Vector of indices in the index list. */
+    Tcl_Obj *retValuePtr;	/* Pointer to the list to be returned. */
+    int index;			/* Current index in the list - discarded. */
+    Tcl_Obj *indexListCopy;
 
     /*
-     * Store the new element into the correct slot in the innermost sublist.
+     * Determine whether the index arg designates a list or a single index.
+     * We have to be careful about the order of the checks to avoid repeated
+     * shimmering; see TIP #22 and #23 for details.
      */
 
-    if ( result == TCL_OK ) {
-	result = TclListObjSetElement( interp, listPtr, index, valuePtr );
-    }
+    if (indexArgPtr->typePtr != &tclListType
+	    && TclGetIntForIndexM(NULL, indexArgPtr, 0, &index) == TCL_OK) {
+	/*
+	 * indexArgPtr designates a single index.
+	 */
 
-    if ( result == TCL_OK ) {
+	return TclLsetFlat(interp, listPtr, 1, &indexArgPtr, valuePtr);
 
-	listPtr->internalRep.twoPtrValue.ptr2 = (VOID *) chainPtr;
+    }
 
-	/* Spoil all the string reps */
-	
-	while ( listPtr != NULL ) {
-	    subListPtr = (Tcl_Obj *) listPtr->internalRep.twoPtrValue.ptr2;
-	    Tcl_InvalidateStringRep( listPtr );
-	    listPtr->internalRep.twoPtrValue.ptr2 = NULL;
-	    listPtr = subListPtr;
-	}
+    indexListCopy = TclListObjCopy(NULL, indexArgPtr);
+    if (indexListCopy == NULL) {
+	/*
+	 * indexArgPtr designates something that is neither an index nor a
+	 * well formed list. Report the error via TclLsetFlat.
+	 */
 
-	/* Return the new list if everything worked. */
-	
-	if ( !duplicated ) {
-	    Tcl_IncrRefCount( retValuePtr );
-	}
-	return retValuePtr;
+	return TclLsetFlat(interp, listPtr, 1, &indexArgPtr, valuePtr);
     }
+    TclListObjGetElements(NULL, indexArgPtr, &indexCount, &indices);
 
-    /* Clean up the one dangling reference otherwise */
+    /*
+     * Let TclLsetFlat handle the actual lset'ting.
+     */
 
-    if ( duplicated ) {
-	Tcl_DecrRefCount( retValuePtr );
-    }
-    return NULL;
+    retValuePtr = TclLsetFlat(interp, listPtr, indexCount, indices, valuePtr);
 
+    Tcl_DecrRefCount(indexListCopy);
+    return retValuePtr;
 }
 
 /*
@@ -1039,220 +1251,216 @@ TclLsetList( interp, listPtr, indexArgPtr, valuePtr )
  *
  * TclLsetFlat --
  *
- *	Core of the 'lset' command when objc>=5.  Objv[2], ... ,
- *	objv[objc-2] contain scalar indices.
+ *	Core engine of the 'lset' command.
  *
  * Results:
- *	Returns the new value of the list variable, or NULL if an
- *	error occurs.
+ *	Returns the new value of the list variable, or NULL if an error
+ *	occurred. The returned object includes one reference count for
+ *	the pointer returned.
  *
  * Side effects:
- *	Surgery is performed on the list value to produce the
- *	result.
- *
- * On entry, the reference count of the variable value does not reflect
- * any references held on the stack.  The first action of this function
- * is to determine whether the object is shared, and to duplicate it if
- * it is.  The reference count of the duplicate is incremented.
- * At this point, the reference count will be 1 for either case, so that
- * the object will appear to be unshared.
- *
- * If an error occurs, and the object has been duplicated, the reference
- * count on the duplicate is decremented so that it is now 0: this dismisses
- * any memory that was allocated by this procedure.
- *
- * If no error occurs, the reference count of the original object is
- * incremented if the object has not been duplicated, and nothing is
- * done to a reference count of the duplicate.  Now the reference count
- * of an unduplicated object is 2 (the returned pointer, plus the one
- * stored in the variable).  The reference count of a duplicate object
- * is 1, reflecting that the returned pointer is the only active
- * reference.  The caller is expected to store the returned value back
- * in the variable and decrement its reference count.  (INST_STORE_*
- * does exactly this.)
- *
- * Tcl_LsetList and related functions maintain a linked list of
- * Tcl_Obj's whose string representations must be spoilt by threading
- * via 'ptr2' of the two-pointer internal representation.  On entry
- * to Tcl_LsetList, the values of 'ptr2' are immaterial; on exit,
- * the 'ptr2' field of any Tcl_Obj that has been modified is set to
- * NULL.
+ *	On entry, the reference count of the variable value does not reflect
+ *	any references held on the stack. The first action of this function is
+ *	to determine whether the object is shared, and to duplicate it if it
+ *	is. The reference count of the duplicate is incremented. At this
+ *	point, the reference count will be 1 for either case, so that the
+ *	object will appear to be unshared.
+ *
+ *	If an error occurs, and the object has been duplicated, the reference
+ *	count on the duplicate is decremented so that it is now 0: this
+ *	dismisses any memory that was allocated by this function.
+ *
+ *	If no error occurs, the reference count of the original object is
+ *	incremented if the object has not been duplicated, and nothing is done
+ *	to a reference count of the duplicate. Now the reference count of an
+ *	unduplicated object is 2 (the returned pointer, plus the one stored in
+ *	the variable). The reference count of a duplicate object is 1,
+ *	reflecting that the returned pointer is the only active reference. The
+ *	caller is expected to store the returned value back in the variable
+ *	and decrement its reference count. (INST_STORE_* does exactly this.)
+ *
+ *	Surgery is performed on the unshared list value to produce the result.
+ *	TclLsetFlat maintains a linked list of Tcl_Obj's whose string
+ *	representations must be spoilt by threading via 'ptr2' of the
+ *	two-pointer internal representation. On entry to TclLsetFlat, the
+ *	values of 'ptr2' are immaterial; on exit, the 'ptr2' field of any
+ *	Tcl_Obj that has been modified is set to NULL.
  *
  *----------------------------------------------------------------------
  */
 
-Tcl_Obj*
-TclLsetFlat( interp, listPtr, indexCount, indexArray, valuePtr )
-    Tcl_Interp* interp;		/* Tcl interpreter */
-    Tcl_Obj* listPtr;		/* Pointer to the list being modified */
-    int indexCount;		/* Number of index args */
-    Tcl_Obj *CONST indexArray[];
-				/* Index args */
-    Tcl_Obj* valuePtr;		/* Value arg to 'lset' */
+Tcl_Obj *
+TclLsetFlat(
+    Tcl_Interp *interp,		/* Tcl interpreter. */
+    Tcl_Obj *listPtr,		/* Pointer to the list being modified. */
+    int indexCount,		/* Number of index args. */
+    Tcl_Obj *const indexArray[],
+				/* Index args. */
+    Tcl_Obj *valuePtr)		/* Value arg to 'lset'. */
 {
-
-    int duplicated;		/* Flag == 1 if the obj has been
-				 * duplicated, 0 otherwise */
-    Tcl_Obj* retValuePtr;	/* Pointer to the list to be returned */
-
-    int elemCount;		/* Length of one sublist being changed */
-    Tcl_Obj** elemPtrs;		/* Pointers to the elements of a sublist */
-
-    Tcl_Obj* subListPtr;	/* Pointer to the current sublist */
-
-    int index;			/* Index of the element to replace in the
-				 * current sublist */
-    Tcl_Obj* chainPtr;		/* Pointer to the enclosing list of
-				 * the current sublist. */
-
-    int result;			/* Status return from library calls */
-
-
-
-    int i;
+    int index, result;
+    Tcl_Obj *subListPtr, *retValuePtr, *chainPtr;
 
     /*
-     * If there are no indices, then simply return the new value,
-     * counting the returned pointer as a reference
+     * If there are no indices, simply return the new value.
+     * (Without indices, [lset] is a synonym for [set].
      */
 
-    if ( indexCount == 0 ) {
-	Tcl_IncrRefCount( valuePtr );
+    if (indexCount == 0) {
+	Tcl_IncrRefCount(valuePtr);
 	return valuePtr;
     }
 
     /*
-     * If the list is shared, make a private copy.
+     * If the list is shared, make a copy we can modify (copy-on-write).
+     * We use Tcl_DuplicateObj() instead of TclListObjCopy() for a few
+     * reasons: 1) we have not yet confirmed listPtr is actually a list;
+     * 2) We make a verbatim copy of any existing string rep, and when
+     * we combine that with the delayed invalidation of string reps of
+     * modified Tcl_Obj's implemented below, the outcome is that any
+     * error condition that causes this routine to return NULL, will
+     * leave the string rep of listPtr and all elements to be unchanged.
      */
 
-    if ( Tcl_IsShared( listPtr ) ) {
-	duplicated = 1;
-	listPtr = Tcl_DuplicateObj( listPtr );
-	Tcl_IncrRefCount( listPtr );
-    } else {
-	duplicated = 0;
-    }
+    subListPtr = Tcl_IsShared(listPtr) ? Tcl_DuplicateObj(listPtr) : listPtr;
 
     /*
      * Anchor the linked list of Tcl_Obj's whose string reps must be
      * invalidated if the operation succeeds.
      */
 
-    retValuePtr = listPtr;
+    retValuePtr = subListPtr;
     chainPtr = NULL;
 
     /*
-     * Handle each index arg by diving into the appropriate sublist
+     * Loop through all the index arguments, and for each one dive
+     * into the appropriate sublist.
      */
 
-    for ( i = 0; ; ++i ) {
-
-	/*
-	 * Take the sublist apart.
-	 */
+    do {
+	int elemCount;
+	Tcl_Obj *parentList, **elemPtrs;
 
-	result = Tcl_ListObjGetElements( interp, listPtr,
-					 &elemCount, &elemPtrs );
-	if ( result != TCL_OK ) {
+	/* Check for the possible error conditions... */
+	result = TCL_ERROR;
+	if (TclListObjGetElements(interp, subListPtr, &elemCount, &elemPtrs)
+		!= TCL_OK) {
+	    /* ...the sublist we're indexing into isn't a list at all. */
 	    break;
 	}
-	listPtr->internalRep.twoPtrValue.ptr2 = (VOID *) chainPtr;
 
 	/*
-	 * Determine the index of the requested element.
+	 * WARNING: the macro TclGetIntForIndexM is not safe for
+	 * post-increments, avoid '*indexArray++' here.
 	 */
-
-	result = TclGetIntForIndex( interp, indexArray[ i ],
-				    (elemCount - 1), &index );
-	if ( result != TCL_OK ) {
-	    break;
-	}
 	
-	/*
-	 * Check that the index is in range.
-	 */
-
-	if ( ( index < 0 ) || ( index >= elemCount ) ) {
-	    Tcl_SetObjResult( interp,
-			      Tcl_NewStringObj( "list index out of range",
-						-1 ) );
-	    result = TCL_ERROR;
+	if (TclGetIntForIndexM(interp, *indexArray, elemCount - 1, &index)
+		!= TCL_OK)  {
+	    /* ...the index we're trying to use isn't an index at all. */
+	    indexArray++;
 	    break;
 	}
+	indexArray++;
 
-	/*
-	 * Break the loop after extracting the innermost sublist
-	 */
-
-	if ( i >= indexCount-1 ) {
-	    result = TCL_OK;
+	if (index < 0 || index >= elemCount) {
+	    /* ...the index points outside the sublist. */
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp,
+			Tcl_NewStringObj("list index out of range", -1));
+	    }
 	    break;
 	}
-	
+
 	/*
-	 * Extract the appropriate sublist, and make sure that it is unshared.
+	 * No error conditions.  As long as we're not yet on the last
+	 * index, determine the next sublist for the next pass through
+	 * the loop, and take steps to make sure it is an unshared copy,
+	 * as we intend to modify it.
 	 */
 
-	subListPtr = elemPtrs[ index ];
-	if ( Tcl_IsShared( subListPtr ) ) {
-	    subListPtr = Tcl_DuplicateObj( subListPtr );
-	    result = TclListObjSetElement( interp, listPtr, index,
-					    subListPtr );
-	    if ( result != TCL_OK ) {
-		/* 
-		 * We actually shouldn't be able to get here.
-		 * If we do, it would result in leaking subListPtr,
-		 * but everything's been validated already; the error
-		 * exit from TclListObjSetElement should never happen.
-		 */
-		break;
+	result = TCL_OK;
+	if (--indexCount) {
+	    parentList = subListPtr;
+	    subListPtr = elemPtrs[index];
+	    if (Tcl_IsShared(subListPtr)) {
+		subListPtr = Tcl_DuplicateObj(subListPtr);
 	    }
-	}
 
-	/* 
-	 * Chain the current sublist onto the linked list of Tcl_Obj's
-	 * whose string reps must be spoilt.
-	 */
+	    /*
+	     * Replace the original elemPtr[index] in parentList with a copy
+	     * we know to be unshared.  This call will also deal with the
+	     * situation where parentList shares its intrep with other
+	     * Tcl_Obj's.  Dealing with the shared intrep case can cause
+	     * subListPtr to become shared again, so detect that case and
+	     * make and store another copy.
+	     */
 
-	chainPtr = listPtr;
-	listPtr = subListPtr;
+	    TclListObjSetElement(NULL, parentList, index, subListPtr);
+	    if (Tcl_IsShared(subListPtr)) {
+		subListPtr = Tcl_DuplicateObj(subListPtr);
+		TclListObjSetElement(NULL, parentList, index, subListPtr);
+	    }
 
-    }
+	    /*
+	     * The TclListObjSetElement() calls do not spoil the string
+	     * rep of parentList, and that's fine for now, since all we've
+	     * done so far is replace a list element with an unshared copy.
+	     * The list value remains the same, so the string rep. is still
+	     * valid, and unchanged, which is good because if this whole
+	     * routine returns NULL, we'd like to leave no change to the
+	     * value of the lset variable.  Later on, when we set valuePtr
+	     * in its proper place, then all containing lists will have
+	     * their values changed, and will need their string reps spoiled.
+	     * We maintain a list of all those Tcl_Obj's (via a little intrep
+	     * surgery) so we can spoil them at that time.
+	     */
 
-    /* Store the result in the list element */
+	    parentList->internalRep.twoPtrValue.ptr2 = (void *) chainPtr;
+	    chainPtr = parentList;
+	}
+    } while (indexCount > 0);
 
-    if ( result == TCL_OK ) {
-	result = TclListObjSetElement( interp, listPtr, index, valuePtr );
-    }
+    /*
+     * Either we've detected and error condition, and exited the loop
+     * with result == TCL_ERROR, or we've successfully reached the last
+     * index, and we're ready to store valuePtr.  In either case, we
+     * need to clean up our string spoiling list of Tcl_Obj's.
+     */
 
-    if ( result == TCL_OK ) {
+    while (chainPtr) {
+	Tcl_Obj *objPtr = chainPtr;
 
-	listPtr->internalRep.twoPtrValue.ptr2 = (VOID *) chainPtr;
+	if (result == TCL_OK) {
 
-	/* Spoil all the string reps */
-	
-	while ( listPtr != NULL ) {
-	    subListPtr = (Tcl_Obj *) listPtr->internalRep.twoPtrValue.ptr2;
-	    Tcl_InvalidateStringRep( listPtr );
-	    listPtr->internalRep.twoPtrValue.ptr2 = NULL;
-	    listPtr = subListPtr;
-	}
+	    /*
+	     * We're going to store valuePtr, so spoil string reps
+	     * of all containing lists.
+	     */
 
-	/* Return the new list if everything worked. */
-	
-	if ( !duplicated ) {
-	    Tcl_IncrRefCount( retValuePtr );
+	    TclInvalidateStringRep(objPtr);
 	}
-	return retValuePtr;
-    }
 
-    /* Clean up the one dangling reference otherwise */
+	/* Clear away our intrep surgery mess */
+	chainPtr = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr2;
+	objPtr->internalRep.twoPtrValue.ptr2 = NULL;
+    }
 
-    if ( duplicated ) {
-	Tcl_DecrRefCount( retValuePtr );
+    if (result != TCL_OK) {
+	/* 
+	 * Error return; message is already in interp. Clean up
+	 * any excess memory. 
+	 */
+	if (retValuePtr != listPtr) {
+	    Tcl_DecrRefCount(retValuePtr);
+	}
+	return NULL;
     }
-    return NULL;
 
+    /* Store valuePtr in proper sublist and return */
+    TclListObjSetElement(NULL, subListPtr, index, valuePtr);
+    TclInvalidateStringRep(subListPtr);
+    Tcl_IncrRefCount(retValuePtr);
+    return retValuePtr;
 }
 
 /*
@@ -1263,86 +1471,125 @@ TclLsetFlat( interp, listPtr, indexCount, indexArray, valuePtr )
  *	Set a single element of a list to a specified value
  *
  * Results:
- *
- *	The return value is normally TCL_OK.  If listPtr does not
- *	refer to a list object and cannot be converted to one, TCL_ERROR
- *	is returned and an error message will be left in the interpreter
- *	result if interp is not NULL.  Similarly, if index designates
- *	an element outside the range [0..listLength-1], where
- *	listLength is the count of elements in the list object designated
- *	by listPtr, TCL_ERROR is returned and an error message is left
- *	in the interpreter result.
+ *	The return value is normally TCL_OK. If listPtr does not refer to a
+ *	list object and cannot be converted to one, TCL_ERROR is returned and
+ *	an error message will be left in the interpreter result if interp is
+ *	not NULL. Similarly, if index designates an element outside the range
+ *	[0..listLength-1], where listLength is the count of elements in the
+ *	list object designated by listPtr, TCL_ERROR is returned and an error
+ *	message is left in the interpreter result.
  *
  * Side effects:
+ *	Tcl_Panic if listPtr designates a shared object. Otherwise, attempts
+ *	to convert it to a list with a non-shared internal rep. Decrements the
+ *	ref count of the object at the specified index within the list,
+ *	replaces with the object designated by valuePtr, and increments the
+ *	ref count of the replacement object.
  *
- *	Panics if listPtr designates a shared object.  Otherwise, attempts
- *	to convert it to a list.  Decrements the ref count of the object
- *	at the specified index within the list, replaces with the
- *	object designated by valuePtr, and increments the ref count
- *	of the replacement object.  
- *
- * It is the caller's responsibility to invalidate the string
- * representation of the object.
+ *	It is the caller's responsibility to invalidate the string
+ *	representation of the object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclListObjSetElement( interp, listPtr, index, valuePtr )
-    Tcl_Interp* interp;		/* Tcl interpreter; used for error reporting
-				 * if not NULL */
-    Tcl_Obj* listPtr;		/* List object in which element should be
-				 * stored */
-    int index;			/* Index of element to store */
-    Tcl_Obj* valuePtr;		/* Tcl object to store in the designated
-				 * list element */
+TclListObjSetElement(
+    Tcl_Interp *interp,		/* Tcl interpreter; used for error reporting
+				 * if not NULL. */
+    Tcl_Obj *listPtr,		/* List object in which element should be
+				 * stored. */
+    int index,			/* Index of element to store. */
+    Tcl_Obj *valuePtr)		/* Tcl object to store in the designated list
+				 * element. */
 {
-    int result;			/* Return value from this function */
-    List* listRepPtr;		/* Internal representation of the list
-				 * being modified */
-    Tcl_Obj** elemPtrs;		/* Pointers to elements of the list */
-    int elemCount;		/* Number of elements in the list */
+    List *listRepPtr;		/* Internal representation of the list being
+				 * modified. */
+    Tcl_Obj **elemPtrs;		/* Pointers to elements of the list. */
+    int elemCount;		/* Number of elements in the list. */
 
-    /* Ensure that the listPtr parameter designates an unshared list */
+    /*
+     * Ensure that the listPtr parameter designates an unshared list.
+     */
 
-    if ( Tcl_IsShared( listPtr ) ) {
-	panic( "Tcl_ListObjSetElement called with shared object" );
+    if (Tcl_IsShared(listPtr)) {
+	Tcl_Panic("%s called with shared object", "TclListObjSetElement");
     }
-    if ( listPtr->typePtr != &tclListType ) {
-	result = SetListFromAny( interp, listPtr );
-	if ( result != TCL_OK ) {
+    if (listPtr->typePtr != &tclListType) {
+	int result;
+
+	if (listPtr->bytes == tclEmptyStringRep) {
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp,
+			Tcl_NewStringObj("list index out of range", -1));
+	    }
+	    return TCL_ERROR;
+	}
+	result = SetListFromAny(interp, listPtr);
+	if (result != TCL_OK) {
 	    return result;
 	}
     }
-    listRepPtr = (List*) listPtr->internalRep.twoPtrValue.ptr1;
-    elemPtrs = listRepPtr->elements;
+
+    listRepPtr = ListRepPtr(listPtr);
     elemCount = listRepPtr->elemCount;
+    elemPtrs = &listRepPtr->elements;
+
+    /*
+     * Ensure that the index is in bounds.
+     */
+
+    if (index<0 || index>=elemCount) {
+	if (interp != NULL) {
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("list index out of range", -1));
+	}
+	return TCL_ERROR;
+    }
+
+    /*
+     * If the internal rep is shared, replace it with an unshared copy.
+     */
 
-    /* Ensure that the index is in bounds */
+    if (listRepPtr->refCount > 1) {
+	List *oldListRepPtr = listRepPtr;
+	Tcl_Obj **oldElemPtrs = elemPtrs;
+	int i;
 
-    if ( index < 0 || index >= elemCount ) {
-	if ( interp != NULL ) {
-	    Tcl_SetObjResult( interp,
-			      Tcl_NewStringObj( "list index out of range",
-						-1 ) );
+	listRepPtr = AttemptNewList(interp, listRepPtr->maxElemCount, NULL);
+	if (listRepPtr == NULL) {
 	    return TCL_ERROR;
 	}
+	listRepPtr->canonicalFlag = oldListRepPtr->canonicalFlag;
+	elemPtrs = &listRepPtr->elements;
+	for (i=0; i < elemCount; i++) {
+	    elemPtrs[i] = oldElemPtrs[i];
+	    Tcl_IncrRefCount(elemPtrs[i]);
+	}
+	listRepPtr->refCount++;
+	listRepPtr->elemCount = elemCount;
+	listPtr->internalRep.twoPtrValue.ptr1 = (void *) listRepPtr;
+	oldListRepPtr->refCount--;
     }
 
-    /* Add a reference to the new list element */
+    /*
+     * Add a reference to the new list element.
+     */
 
-    Tcl_IncrRefCount( valuePtr );
+    Tcl_IncrRefCount(valuePtr);
 
-    /* Remove a reference from the old list element */
+    /*
+     * Remove a reference from the old list element.
+     */
 
-    Tcl_DecrRefCount( elemPtrs[ index ] );
+    Tcl_DecrRefCount(elemPtrs[index]);
 
-    /* Stash the new object in the list */
+    /*
+     * Stash the new object in the list.
+     */
 
-    elemPtrs[ index ] = valuePtr;
+    elemPtrs[index] = valuePtr;
 
     return TCL_OK;
-    
 }
 
 /*
@@ -1358,31 +1605,29 @@ TclListObjSetElement( interp, listPtr, index, valuePtr )
  *
  * Side effects:
  *	Frees listPtr's List* internal representation and sets listPtr's
- *	internalRep.twoPtrValue.ptr1 to NULL. Decrements the ref counts
- *	of all element objects, which may free them.
+ *	internalRep.twoPtrValue.ptr1 to NULL. Decrements the ref counts of all
+ *	element objects, which may free them.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeListInternalRep(listPtr)
-    Tcl_Obj *listPtr;		/* List object with internal rep to free. */
+FreeListInternalRep(
+    Tcl_Obj *listPtr)		/* List object with internal rep to free. */
 {
-    register List *listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
-    register Tcl_Obj **elemPtrs = listRepPtr->elements;
-    register Tcl_Obj *objPtr;
-    int numElems = listRepPtr->elemCount;
-    int i;
-    
-    for (i = 0;  i < numElems;  i++) {
-	objPtr = elemPtrs[i];
-	Tcl_DecrRefCount(objPtr);
+    List *listRepPtr = ListRepPtr(listPtr);
+
+    if (--listRepPtr->refCount <= 0) {
+	Tcl_Obj **elemPtrs = &listRepPtr->elements;
+	int i, numElems = listRepPtr->elemCount;
+
+	for (i = 0;  i < numElems;  i++) {
+	    Tcl_DecrRefCount(elemPtrs[i]);
+	}
+	ckfree((char *) listRepPtr);
     }
-    ckfree((char *) elemPtrs);
-    ckfree((char *) listRepPtr);
 
-    listPtr->internalRep.twoPtrValue.ptr1 = NULL;
-    listPtr->internalRep.twoPtrValue.ptr2 = NULL;
+    listPtr->typePtr = NULL;
 }
 
 /*
@@ -1390,57 +1635,26 @@ FreeListInternalRep(listPtr)
  *
  * DupListInternalRep --
  *
- *	Initialize the internal representation of a list Tcl_Obj to a
- *	copy of the internal representation of an existing list object. 
+ *	Initialize the internal representation of a list Tcl_Obj to share the
+ *	internal representation of an existing list object.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	"srcPtr"s list internal rep pointer should not be NULL and we assume
- *	it is not NULL. We set "copyPtr"s internal rep to a pointer to a
- *	newly allocated List structure that, in turn, points to "srcPtr"s
- *	element objects. Those element objects are not actually copied but
- *	are shared between "srcPtr" and "copyPtr". The ref count of each
- *	element object is incremented.
+ *	The reference count of the List internal rep is incremented.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-DupListInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;		/* Object with internal rep to copy. */
-    Tcl_Obj *copyPtr;		/* Object with internal rep to set. */
+DupListInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    Tcl_Obj *copyPtr)		/* Object with internal rep to set. */
 {
-    List *srcListRepPtr = (List *) srcPtr->internalRep.twoPtrValue.ptr1;
-    int numElems = srcListRepPtr->elemCount;
-    int maxElems = srcListRepPtr->maxElemCount;
-    register Tcl_Obj **srcElemPtrs = srcListRepPtr->elements;
-    register Tcl_Obj **copyElemPtrs;
-    register List *copyListRepPtr;
-    int i;
+    List *listRepPtr = ListRepPtr(srcPtr);
 
-    /*
-     * Allocate a new List structure that points to "srcPtr"s element
-     * objects. Increment the ref counts for those (now shared) element
-     * objects.
-     */
-    
-    copyElemPtrs = (Tcl_Obj **)
-	ckalloc((unsigned) maxElems * sizeof(Tcl_Obj *));
-    for (i = 0;  i < numElems;  i++) {
-	copyElemPtrs[i] = srcElemPtrs[i];
-	Tcl_IncrRefCount(copyElemPtrs[i]);
-    }
-    
-    copyListRepPtr = (List *) ckalloc(sizeof(List));
-    copyListRepPtr->maxElemCount = maxElems;
-    copyListRepPtr->elemCount    = numElems;
-    copyListRepPtr->elements     = copyElemPtrs;
-    
-    copyPtr->internalRep.twoPtrValue.ptr1 = (VOID *) copyListRepPtr;
-    copyPtr->internalRep.twoPtrValue.ptr2 = NULL;
-    copyPtr->typePtr = &tclListType;
+    ListSetIntRep(copyPtr, listRepPtr);
 }
 
 /*
@@ -1448,8 +1662,7 @@ DupListInternalRep(srcPtr, copyPtr)
  *
  * SetListFromAny --
  *
- *	Attempt to generate a list internal form for the Tcl object
- *	"objPtr".
+ *	Attempt to generate a list internal form for the Tcl object "objPtr".
  *
  * Results:
  *	The return value is TCL_OK or TCL_ERROR. If an error occurs during
@@ -1464,110 +1677,113 @@ DupListInternalRep(srcPtr, copyPtr)
  */
 
 static int
-SetListFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* The object to convert. */
+SetListFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *objPtr)		/* The object to convert. */
 {
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    char *string, *s;
-    CONST char *elemStart, *nextElem;
-    int lenRemain, length, estCount, elemSize, hasBrace, i, j, result;
-    char *limit;		/* Points just after string's last byte. */
-    register CONST char *p;
-    register Tcl_Obj **elemPtrs;
-    register Tcl_Obj *elemPtr;
     List *listRepPtr;
+    Tcl_Obj **elemPtrs;
 
     /*
-     * Get the string representation. Make it up-to-date if necessary.
+     * Dictionaries are a special case; they have a string representation such
+     * that *all* valid dictionaries are valid lists. Hence we can convert
+     * more directly. Only do this when there's no existing string rep; if
+     * there is, it is the string rep that's authoritative (because it could
+     * describe duplicate keys).
      */
 
-    string = Tcl_GetStringFromObj(objPtr, &length);
+    if (objPtr->typePtr == &tclDictType && !objPtr->bytes) {
+	Tcl_Obj *keyPtr, *valuePtr;
+	Tcl_DictSearch search;
+	int done, size;
 
-    /*
-     * Parse the string into separate string objects, and create a List
-     * structure that points to the element string objects. We use a
-     * modified version of Tcl_SplitList's implementation to avoid one
-     * malloc and a string copy for each list element. First, estimate the
-     * number of elements by counting the number of space characters in the
-     * list.
-     */
+	/*
+	 * Create the new list representation. Note that we do not need to do
+	 * anything with the string representation as the transformation (and
+	 * the reverse back to a dictionary) are both order-preserving. Also
+	 * note that since we know we've got a valid dictionary (by
+	 * representation) we also know that fetching the size of the
+	 * dictionary or iterating over it will not fail.
+	 */
 
-    limit = (string + length);
-    estCount = 1;
-    for (p = string;  p < limit;  p++) {
-	if (isspace(UCHAR(*p))) { /* INTL: ISO space. */
-	    estCount++;
+	Tcl_DictObjSize(NULL, objPtr, &size);
+	listRepPtr = AttemptNewList(interp, size > 0 ? 2*size : 1, NULL);
+	if (!listRepPtr) {
+	    return TCL_ERROR;
 	}
-    }
+	listRepPtr->elemCount = 2 * size;
 
-    /*
-     * Allocate a new List structure with enough room for "estCount"
-     * elements. Each element is a pointer to a Tcl_Obj with the appropriate
-     * string rep. The initial "estCount" elements are set using the
-     * corresponding "argv" strings.
-     */
+	/*
+	 * Populate the list representation.
+	 */
 
-    elemPtrs = (Tcl_Obj **)
-	    ckalloc((unsigned) (estCount * sizeof(Tcl_Obj *)));
-    for (p = string, lenRemain = length, i = 0;
-	    lenRemain > 0;
-	    p = nextElem, lenRemain = (limit - nextElem), i++) {
-	result = TclFindElement(interp, p, lenRemain, &elemStart, &nextElem,
-				&elemSize, &hasBrace);
-	if (result != TCL_OK) {
-	    for (j = 0;  j < i;  j++) {
-		elemPtr = elemPtrs[j];
-		Tcl_DecrRefCount(elemPtr);
-	    }
-	    ckfree((char *) elemPtrs);
-	    return result;
-	}
-	if (elemStart >= limit) {
-	    break;
-	}
-	if (i > estCount) {
-	    panic("SetListFromAny: bad size estimate for list");
+	elemPtrs = &listRepPtr->elements;
+	Tcl_DictObjFirst(NULL, objPtr, &search, &keyPtr, &valuePtr, &done);
+	while (!done) {
+	    *elemPtrs++ = keyPtr;
+	    *elemPtrs++ = valuePtr;
+	    Tcl_IncrRefCount(keyPtr);
+	    Tcl_IncrRefCount(valuePtr);
+	    Tcl_DictObjNext(&search, &keyPtr, &valuePtr, &done);
 	}
+    } else {
+	int estCount, length;
+	const char *limit, *nextElem = TclGetStringFromObj(objPtr, &length);
 
 	/*
-	 * Allocate a Tcl object for the element and initialize it from the
-	 * "elemSize" bytes starting at "elemStart".
+	 * Allocate enough space to hold a (Tcl_Obj *) for each
+	 * (possible) list element.
 	 */
 
-	s = ckalloc((unsigned) elemSize + 1);
-	if (hasBrace) {
-	    memcpy((VOID *) s, (VOID *) elemStart,  (size_t) elemSize);
-	    s[elemSize] = 0;
-	} else {
-	    elemSize = TclCopyAndCollapse(elemSize, elemStart, s);
+	estCount = TclMaxListLength(nextElem, length, &limit);
+	estCount += (estCount == 0); /* Smallest List struct holds 1 element. */
+	listRepPtr = AttemptNewList(interp, estCount, NULL);
+	if (listRepPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	elemPtrs = &listRepPtr->elements;
+
+	/* Each iteration, parse and store a list element */
+	while (nextElem < limit) {
+	    const char *elemStart;
+	    int elemSize, literal;
+
+	    if (TCL_OK != TclFindElement(interp, nextElem, (limit - nextElem),
+		    &elemStart, &nextElem, &elemSize, &literal)) {
+		while (--elemPtrs >= &listRepPtr->elements) {
+		    Tcl_DecrRefCount(*elemPtrs);
+		}
+		ckfree((char *) listRepPtr);
+		return TCL_ERROR;
+	    }
+	    if (elemStart == limit) {
+		break;
+	    }
+
+	    /* TODO: replace panic with error on alloc failure? */
+	    if (literal) {
+		TclNewStringObj(*elemPtrs, elemStart, elemSize);
+	    } else {
+		TclNewObj(*elemPtrs);
+		(*elemPtrs)->bytes = ckalloc((unsigned) elemSize + 1);
+		(*elemPtrs)->length = TclCopyAndCollapse(elemSize, elemStart,
+			(*elemPtrs)->bytes);
+	    }
+
+	    Tcl_IncrRefCount(*elemPtrs++);/* Since list now holds ref to it. */
 	}
-	
-	TclNewObj(elemPtr);
-        elemPtr->bytes  = s;
-        elemPtr->length = elemSize;
-        elemPtrs[i] = elemPtr;
-	Tcl_IncrRefCount(elemPtr); /* since list now holds ref to it */
-    }
 
-    listRepPtr = (List *) ckalloc(sizeof(List));
-    listRepPtr->maxElemCount = estCount;
-    listRepPtr->elemCount    = i;
-    listRepPtr->elements     = elemPtrs;
+ 	listRepPtr->elemCount = elemPtrs - &listRepPtr->elements;
+    }
 
     /*
-     * Free the old internalRep before setting the new one. We do this as
-     * late as possible to allow the conversion code, in particular
+     * Free the old internalRep before setting the new one. We do this as late
+     * as possible to allow the conversion code, in particular
      * Tcl_GetStringFromObj, to use that old internalRep.
      */
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-
-    objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) listRepPtr;
-    objPtr->internalRep.twoPtrValue.ptr2 = NULL;
-    objPtr->typePtr = &tclListType;
+    TclFreeIntRep(objPtr);
+    ListSetIntRep(objPtr, listRepPtr);
     return TCL_OK;
 }
 
@@ -1576,39 +1792,50 @@ SetListFromAny(interp, objPtr)
  *
  * UpdateStringOfList --
  *
- *	Update the string representation for a list object.
- *	Note: This procedure does not invalidate an existing old string rep
- *	so storage will be lost if this has not already been done. 
+ *	Update the string representation for a list object. Note: This
+ *	function does not invalidate an existing old string rep so storage
+ *	will be lost if this has not already been done.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The object's string is set to a valid string that results from
- *	the list-to-string conversion. This string will be empty if the
- *	list has no elements. The list internal representation
- *	should not be NULL and we assume it is not NULL.
+ *	The object's string is set to a valid string that results from the
+ *	list-to-string conversion. This string will be empty if the list has
+ *	no elements. The list internal representation should not be NULL and
+ *	we assume it is not NULL.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfList(listPtr)
-    Tcl_Obj *listPtr;		/* List object with string rep to update. */
+UpdateStringOfList(
+    Tcl_Obj *listPtr)		/* List object with string rep to update. */
 {
 #   define LOCAL_SIZE 20
-    int localFlags[LOCAL_SIZE], *flagPtr;
-    List *listRepPtr = (List *) listPtr->internalRep.twoPtrValue.ptr1;
+    int localFlags[LOCAL_SIZE], *flagPtr = NULL;
+    List *listRepPtr = ListRepPtr(listPtr);
     int numElems = listRepPtr->elemCount;
-    register int i;
+    int i, length, bytesNeeded = 0;
     char *elem, *dst;
-    int length;
+    Tcl_Obj **elemPtrs;
 
     /*
-     * Convert each element of the list to string form and then convert it
-     * to proper list element form, adding it to the result buffer.
+     * Mark the list as being canonical; although it will now have a string
+     * rep, it is one we derived through proper "canonical" quoting and so
+     * it's known to be free from nasties relating to [concat] and [eval].
      */
 
+    listRepPtr->canonicalFlag = 1;
+
+    /* Handle empty list case first, so rest of the routine is simpler */
+
+    if (numElems == 0) {
+	listPtr->bytes = tclEmptyStringRep;
+	listPtr->length = 0;
+	return;
+    }
+
     /*
      * Pass 1: estimate space, gather flags.
      */
@@ -1616,41 +1843,47 @@ UpdateStringOfList(listPtr)
     if (numElems <= LOCAL_SIZE) {
 	flagPtr = localFlags;
     } else {
-	flagPtr = (int *) ckalloc((unsigned) numElems*sizeof(int));
+	/* We know numElems <= LIST_MAX, so this is safe. */
+	flagPtr = (int *) ckalloc((unsigned) numElems * sizeof(int));
     }
-    listPtr->length = 1;
+    elemPtrs = &listRepPtr->elements;
     for (i = 0; i < numElems; i++) {
-	elem = Tcl_GetStringFromObj(listRepPtr->elements[i], &length);
-	listPtr->length += Tcl_ScanCountedElement(elem, length,
-		&flagPtr[i]) + 1;
-	/*
-	 * Check for continued sanity. [Bug 1267380]
-	 */
-	if (listPtr->length < 1) {
-	    Tcl_Panic("string representation size exceeds sane bounds");
+	flagPtr[i] = ( i ? TCL_DONT_QUOTE_HASH : 0 );
+	elem = TclGetStringFromObj(elemPtrs[i], &length);
+	bytesNeeded += TclScanElement(elem, length, flagPtr+i);
+	if (bytesNeeded < 0) {
+	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
 	}
     }
+    if (bytesNeeded > INT_MAX - numElems + 1) {
+	Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+    }
+    bytesNeeded += numElems;
 
     /*
      * Pass 2: copy into string rep buffer.
      */
 
-    listPtr->bytes = ckalloc((unsigned) listPtr->length);
+    listPtr->length = bytesNeeded - 1;
+    listPtr->bytes = ckalloc((unsigned) bytesNeeded);
     dst = listPtr->bytes;
     for (i = 0; i < numElems; i++) {
-	elem = Tcl_GetStringFromObj(listRepPtr->elements[i], &length);
-	dst += Tcl_ConvertCountedElement(elem, length, dst, flagPtr[i]);
-	*dst = ' ';
-	dst++;
+	flagPtr[i] |= ( i ? TCL_DONT_QUOTE_HASH : 0 );
+	elem = TclGetStringFromObj(elemPtrs[i], &length);
+	dst += TclConvertElement(elem, length, dst, flagPtr[i]);
+	*dst++ = ' ';
     }
+    listPtr->bytes[listPtr->length] = '\0';
+
     if (flagPtr != localFlags) {
 	ckfree((char *) flagPtr);
     }
-    if (dst == listPtr->bytes) {
-	*dst = 0;
-    } else {
-	dst--;
-	*dst = 0;
-    }
-    listPtr->length = dst - listPtr->bytes;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclLiteral.c b/generic/tclLiteral.c
index 0c88303..2c91b82 100644
--- a/generic/tclLiteral.c
+++ b/generic/tclLiteral.c
@@ -1,76 +1,74 @@
-/* 
+/*
  * tclLiteral.c --
  *
- *	Implementation of the global and ByteCode-local literal tables
- *	used to manage the Tcl objects created for literal values during
- *	compilation of Tcl scripts. This implementation borrows heavily
- *	from the more general hashtable implementation of Tcl hash tables
- *	that appears in tclHash.c.
+ *	Implementation of the global and ByteCode-local literal tables used to
+ *	manage the Tcl objects created for literal values during compilation
+ *	of Tcl scripts. This implementation borrows heavily from the more
+ *	general hashtable implementation of Tcl hash tables that appears in
+ *	tclHash.c.
  *
  * Copyright (c) 1997-1998 Sun Microsystems, Inc.
+ * Copyright (c) 2004 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 #include "tclCompile.h"
-#include "tclPort.h"
+
 /*
- * When there are this many entries per bucket, on average, rebuild
- * a literal's hash table to make it larger.
+ * When there are this many entries per bucket, on average, rebuild a
+ * literal's hash table to make it larger.
  */
 
 #define REBUILD_MULTIPLIER	3
 
 /*
- * Procedure prototypes for static procedures in this file:
+ * Function prototypes for static functions in this file:
  */
 
-static int		AddLocalLiteralEntry _ANSI_ARGS_((
-			    CompileEnv *envPtr, LiteralEntry *globalPtr,
-			    int localHash));
-static void		ExpandLocalLiteralArray _ANSI_ARGS_((
-			    CompileEnv *envPtr));
-static unsigned int	HashString _ANSI_ARGS_((CONST char *bytes,
-			    int length));
-static void		RebuildLiteralTable _ANSI_ARGS_((
-			    LiteralTable *tablePtr));
+static int		AddLocalLiteralEntry(CompileEnv *envPtr,
+			    Tcl_Obj *objPtr, int localHash);
+static void		ExpandLocalLiteralArray(CompileEnv *envPtr);
+static unsigned int	HashString(const char *bytes, int length);
+static void		RebuildLiteralTable(LiteralTable *tablePtr);
 
 /*
  *----------------------------------------------------------------------
  *
  * TclInitLiteralTable --
  *
- *	This procedure is called to initialize the fields of a literal table
+ *	This function is called to initialize the fields of a literal table
  *	structure for either an interpreter or a compilation's CompileEnv
  *	structure.
  *
  * Results:
  *	None.
  *
- * Side effects: 
+ * Side effects:
  *	The literal table is made ready for use.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclInitLiteralTable(tablePtr)
-    register LiteralTable *tablePtr; /* Pointer to table structure, which
-				      * is supplied by the caller. */
+TclInitLiteralTable(
+    register LiteralTable *tablePtr)
+				/* Pointer to table structure, which is
+				 * supplied by the caller. */
 {
-#if (TCL_SMALL_HASH_TABLE != 4) 
-    panic("TclInitLiteralTable: TCL_SMALL_HASH_TABLE is %d, not 4\n",
+#if (TCL_SMALL_HASH_TABLE != 4)
+    Tcl_Panic("TclInitLiteralTable: TCL_SMALL_HASH_TABLE is %d, not 4",
 	    TCL_SMALL_HASH_TABLE);
 #endif
-    
+
     tablePtr->buckets = tablePtr->staticBuckets;
     tablePtr->staticBuckets[0] = tablePtr->staticBuckets[1] = 0;
     tablePtr->staticBuckets[2] = tablePtr->staticBuckets[3] = 0;
     tablePtr->numBuckets = TCL_SMALL_HASH_TABLE;
     tablePtr->numEntries = 0;
-    tablePtr->rebuildSize = TCL_SMALL_HASH_TABLE*REBUILD_MULTIPLIER;
+    tablePtr->rebuildSize = TCL_SMALL_HASH_TABLE * REBUILD_MULTIPLIER;
     tablePtr->mask = 3;
 }
 
@@ -79,49 +77,58 @@ TclInitLiteralTable(tablePtr)
  *
  * TclDeleteLiteralTable --
  *
- *	This procedure frees up everything associated with a literal table
- *	except for the table's structure itself.
+ *	This function frees up everything associated with a literal table
+ *	except for the table's structure itself. It is called when the
+ *	interpreter is deleted.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Each literal in the table is released: i.e., its reference count
- *	in the global literal table is decremented and, if it becomes zero,
- *	the literal is freed. In addition, the table's bucket array is
- *	freed.
+ *	Each literal in the table is released: i.e., its reference count in
+ *	the global literal table is decremented and, if it becomes zero, the
+ *	literal is freed. In addition, the table's bucket array is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclDeleteLiteralTable(interp, tablePtr)
-    Tcl_Interp *interp;		/* Interpreter containing shared literals
+TclDeleteLiteralTable(
+    Tcl_Interp *interp,		/* Interpreter containing shared literals
 				 * referenced by the table to delete. */
-    LiteralTable *tablePtr;	/* Points to the literal table to delete. */
+    LiteralTable *tablePtr)	/* Points to the literal table to delete. */
 {
-    LiteralEntry *entryPtr;
-    int i, start;
+    LiteralEntry *entryPtr, *nextPtr;
+    Tcl_Obj *objPtr;
+    int i;
 
     /*
-     * Release remaining literals in the table. Note that releasing a
-     * literal might release other literals, modifying the table, so we
-     * restart the search from the bucket chain we last found an entry.
+     * Release remaining literals in the table. Note that releasing a literal
+     * might release other literals, modifying the table, so we restart the
+     * search from the bucket chain we last found an entry.
      */
 
 #ifdef TCL_COMPILE_DEBUG
     TclVerifyGlobalLiteralTable((Interp *) interp);
 #endif /*TCL_COMPILE_DEBUG*/
 
-    start = 0;
-    while (tablePtr->numEntries > 0) {
-	for (i = start;  i < tablePtr->numBuckets;  i++) {
-	    entryPtr = tablePtr->buckets[i];
-	    if (entryPtr != NULL) {
-		TclReleaseLiteral(interp, entryPtr->objPtr);
-		start = i;
-		break;
-	    }
+    /*
+     * We used to call TclReleaseLiteral for each literal in the table, which
+     * is rather inefficient as it causes one lookup-by-hash for each
+     * reference to the literal. We now rely at interp-deletion on each
+     * bytecode object to release its references to the literal Tcl_Obj
+     * without requiring that it updates the global table itself, and deal
+     * here only with the table.
+     */
+
+    for (i=0 ; i<tablePtr->numBuckets ; i++) {
+	entryPtr = tablePtr->buckets[i];
+	while (entryPtr != NULL) {
+	    objPtr = entryPtr->objPtr;
+	    TclDecrRefCount(objPtr);
+	    nextPtr = entryPtr->nextPtr;
+	    ckfree((char *) entryPtr);
+	    entryPtr = nextPtr;
 	}
     }
 
@@ -137,199 +144,266 @@ TclDeleteLiteralTable(interp, tablePtr)
 /*
  *----------------------------------------------------------------------
  *
- * TclRegisterLiteral --
+ * TclCreateLiteral --
  *
- *	Find, or if necessary create, an object in a CompileEnv literal
- *	array that has a string representation matching the argument string.
+ *	Find, or if necessary create, an object in the interpreter's literal
+ *	table that has a string representation matching the argument
+ *	string. If nsPtr!=NULL then only literals stored for the namespace are
+ *	considered. 
  *
  * Results:
- *	The index in the CompileEnv's literal array that references a
- *	shared literal matching the string. The object is created if
- *	necessary.
+ *	The literal object. If it was created in this call *newPtr is set to
+ *      1, else 0. NULL is returned if newPtr==NULL and no literal is found.
  *
  * Side effects:
- *	To maximize sharing, we look up the string in the interpreter's
- *	global literal table. If not found, we create a new shared literal
- *	in the global table. We then add a reference to the shared
- *	literal in the CompileEnv's literal array. 
- *
- *	If onHeap is 1, this procedure is given ownership of the string: if
- *	an object is created then its string representation is set directly
- *	from string, otherwise the string is freed. Typically, a caller sets
- *	onHeap 1 if "string" is an already heap-allocated buffer holding the
- *	result of backslash substitutions.
+ *      Increments the ref count of the global LiteralEntry since the caller
+ *      now holds a reference. 
+ *	If LITERAL_ON_HEAP is set in flags, this function is given ownership
+ *	of the string: if an object is created then its string representation
+ *	is set directly from string, otherwise the string is freed. Typically,
+ *	a caller sets LITERAL_ON_HEAP if "string" is an already heap-allocated
+ *	buffer holding the result of backslash substitutions.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclRegisterLiteral(envPtr, bytes, length, onHeap)
-    CompileEnv *envPtr;		/* Points to the CompileEnv in whose object
-				 * array an object is found or created. */
-    register char *bytes;	/* Points to string for which to find or
-				 * create an object in CompileEnv's object
-				 * array. */
-    int length;			/* Number of bytes in the string. If < 0,
-				 * the string consists of all bytes up to
-				 * the first null character. */
-    int onHeap;			/* If 1 then the caller already malloc'd
-				 * bytes and ownership is passed to this
-				 * procedure. */
+Tcl_Obj *
+TclCreateLiteral(
+    Interp *iPtr,
+    char *bytes,
+    int length,
+    unsigned int hash,       /* The string's hash. If -1, it will be computed here */
+    int *newPtr,
+    Namespace *nsPtr,
+    int flags,
+    LiteralEntry **globalPtrPtr)
 {
-    Interp *iPtr = envPtr->iPtr;
     LiteralTable *globalTablePtr = &(iPtr->literalTable);
-    LiteralTable *localTablePtr = &(envPtr->localLitTable);
-    register LiteralEntry *globalPtr, *localPtr;
-    register Tcl_Obj *objPtr;
-    unsigned int hash;
-    int localHash, globalHash, objIndex;
-    long n;
-    char buf[TCL_INTEGER_SPACE];
-
-    if (length < 0) {
-	length = (bytes? strlen(bytes) : 0);
-    }
-    hash = HashString(bytes, length);
-
+    LiteralEntry *globalPtr;
+    int globalHash;
+    Tcl_Obj *objPtr;
+    
     /*
-     * Is the literal already in the CompileEnv's local literal array?
-     * If so, just return its index.
+     * Is it in the interpreter's global literal table?
      */
 
-    localHash = (hash & localTablePtr->mask);
-    for (localPtr = localTablePtr->buckets[localHash];
-	  localPtr != NULL;  localPtr = localPtr->nextPtr) {
-	objPtr = localPtr->objPtr;
-	if ((objPtr->length == length) && ((length == 0)
-		|| ((objPtr->bytes[0] == bytes[0])
-			&& (memcmp(objPtr->bytes, bytes, (unsigned) length)
-				== 0)))) {
-	    if (onHeap) {
-		ckfree(bytes);
-	    }
-	    objIndex = (localPtr - envPtr->literalArrayPtr);
-#ifdef TCL_COMPILE_DEBUG
-	    TclVerifyLocalLiteralTable(envPtr);
-#endif /*TCL_COMPILE_DEBUG*/
-
-	    return objIndex;
-	}
+    if (hash == (unsigned int) -1) {
+	hash = HashString(bytes, length);
     }
-
-    /*
-     * The literal is new to this CompileEnv. Is it in the interpreter's
-     * global literal table?
-     */
-
     globalHash = (hash & globalTablePtr->mask);
-    for (globalPtr = globalTablePtr->buckets[globalHash];
-	 globalPtr != NULL;  globalPtr = globalPtr->nextPtr) {
+    for (globalPtr=globalTablePtr->buckets[globalHash] ; globalPtr!=NULL;
+	    globalPtr = globalPtr->nextPtr) {
 	objPtr = globalPtr->objPtr;
-	if ((objPtr->length == length) && ((length == 0)
+	if ((globalPtr->nsPtr == nsPtr)
+		&& (objPtr->length == length) && ((length == 0)
 		|| ((objPtr->bytes[0] == bytes[0])
-			&& (memcmp(objPtr->bytes, bytes, (unsigned) length)
-				== 0)))) {
+		&& (memcmp(objPtr->bytes, bytes, (unsigned) length) == 0)))) {
 	    /*
-	     * A global literal was found. Add an entry to the CompileEnv's
-	     * local literal array.
+	     * A literal was found: return it
 	     */
-	    
-	    if (onHeap) {
-		ckfree(bytes);
+
+	    if (newPtr) {
+		*newPtr = 0;
 	    }
-	    objIndex = AddLocalLiteralEntry(envPtr, globalPtr, localHash);
-#ifdef TCL_COMPILE_DEBUG
-	    if (globalPtr->refCount < 1) {
-		panic("TclRegisterLiteral: global literal \"%.*s\" had bad refCount %d",
-			(length>60? 60 : length), bytes,
-			globalPtr->refCount);
+	    if (globalPtrPtr) {
+		*globalPtrPtr = globalPtr;
 	    }
-	    TclVerifyLocalLiteralTable(envPtr);
-#endif /*TCL_COMPILE_DEBUG*/ 
-	    return objIndex;
+	    if (flags & LITERAL_ON_HEAP) {
+		ckfree(bytes);
+	    }
+	    globalPtr->refCount++;
+	    return objPtr;
+	}
+    }
+    if (!newPtr) {
+	if (flags & LITERAL_ON_HEAP) {
+	    ckfree(bytes);
 	}
+	return NULL;
     }
 
     /*
      * The literal is new to the interpreter. Add it to the global literal
-     * table then add an entry to the CompileEnv's local literal array.
-     * Convert the object to an integer object if possible.
+     * table.
      */
 
     TclNewObj(objPtr);
     Tcl_IncrRefCount(objPtr);
-    if (onHeap) {
+    if (flags & LITERAL_ON_HEAP) {
 	objPtr->bytes = bytes;
 	objPtr->length = length;
     } else {
 	TclInitStringRep(objPtr, bytes, length);
     }
 
-    if (TclLooksLikeInt(bytes, length)) {
-	/*
-	 * From here we use the objPtr, because it is NULL terminated
-	 */
-	if (TclGetLong((Tcl_Interp *) NULL, objPtr->bytes, &n) == TCL_OK) {
-	    TclFormatInt(buf, n);
-	    if (strcmp(objPtr->bytes, buf) == 0) {
-		objPtr->internalRep.longValue = n;
-		objPtr->typePtr = &tclIntType;
-	    }
-	}
-    }
-    
 #ifdef TCL_COMPILE_DEBUG
     if (TclLookupLiteralEntry((Tcl_Interp *) iPtr, objPtr) != NULL) {
-	panic("TclRegisterLiteral: literal \"%.*s\" found globally but shouldn't be",
-	        (length>60? 60 : length), bytes);
+	Tcl_Panic("TclRegisterLiteral: literal \"%.*s\" found globally but shouldn't be",
+		(length>60? 60 : length), bytes);
     }
 #endif
 
     globalPtr = (LiteralEntry *) ckalloc((unsigned) sizeof(LiteralEntry));
     globalPtr->objPtr = objPtr;
-    globalPtr->refCount = 0;
+    globalPtr->refCount = 1;
+    globalPtr->nsPtr = nsPtr;
     globalPtr->nextPtr = globalTablePtr->buckets[globalHash];
     globalTablePtr->buckets[globalHash] = globalPtr;
     globalTablePtr->numEntries++;
 
     /*
-     * If the global literal table has exceeded a decent size, rebuild it
-     * with more buckets.
+     * If the global literal table has exceeded a decent size, rebuild it with
+     * more buckets.
      */
 
     if (globalTablePtr->numEntries >= globalTablePtr->rebuildSize) {
 	RebuildLiteralTable(globalTablePtr);
     }
-    objIndex = AddLocalLiteralEntry(envPtr, globalPtr, localHash);
 
 #ifdef TCL_COMPILE_DEBUG
     TclVerifyGlobalLiteralTable(iPtr);
-    TclVerifyLocalLiteralTable(envPtr);
     {
 	LiteralEntry *entryPtr;
 	int found, i;
+
 	found = 0;
-	for (i = 0;  i < globalTablePtr->numBuckets;  i++) {
-	    for (entryPtr = globalTablePtr->buckets[i];
-		    entryPtr != NULL;  entryPtr = entryPtr->nextPtr) {
-		if ((entryPtr == globalPtr)
-		        && (entryPtr->objPtr == objPtr)) {
+	for (i=0 ; i<globalTablePtr->numBuckets ; i++) {
+	    for (entryPtr=globalTablePtr->buckets[i]; entryPtr!=NULL ;
+		    entryPtr=entryPtr->nextPtr) {
+		if ((entryPtr == globalPtr) && (entryPtr->objPtr == objPtr)) {
 		    found = 1;
 		}
 	    }
 	}
 	if (!found) {
-	    panic("TclRegisterLiteral: literal \"%.*s\" wasn't global",
-	            (length>60? 60 : length), bytes);
+	    Tcl_Panic("TclRegisterLiteral: literal \"%.*s\" wasn't global",
+		    (length>60? 60 : length), bytes);
 	}
     }
 #endif /*TCL_COMPILE_DEBUG*/
-#ifdef TCL_COMPILE_STATS   
+
+#ifdef TCL_COMPILE_STATS
     iPtr->stats.numLiteralsCreated++;
-    iPtr->stats.totalLitStringBytes   += (double) (length + 1);
+    iPtr->stats.totalLitStringBytes += (double) (length + 1);
     iPtr->stats.currentLitStringBytes += (double) (length + 1);
     iPtr->stats.literalCount[TclLog2(length)]++;
 #endif /*TCL_COMPILE_STATS*/
+
+    if (globalPtrPtr) {
+	*globalPtrPtr = globalPtr;
+    }
+    *newPtr = 1;
+    return objPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclRegisterLiteral --
+ *
+ *	Find, or if necessary create, an object in a CompileEnv literal array
+ *	that has a string representation matching the argument string.
+ *
+ * Results:
+ *	The index in the CompileEnv's literal array that references a shared
+ *	literal matching the string. The object is created if necessary.
+ *
+ * Side effects:
+ *	To maximize sharing, we look up the string in the interpreter's global
+ *	literal table. If not found, we create a new shared literal in the
+ *	global table. We then add a reference to the shared literal in the
+ *	CompileEnv's literal array.
+ *
+ *	If LITERAL_ON_HEAP is set in flags, this function is given ownership
+ *	of the string: if an object is created then its string representation
+ *	is set directly from string, otherwise the string is freed. Typically,
+ *	a caller sets LITERAL_ON_HEAP if "string" is an already heap-allocated
+ *	buffer holding the result of backslash substitutions.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclRegisterLiteral(
+    CompileEnv *envPtr,		/* Points to the CompileEnv in whose object
+				 * array an object is found or created. */
+    register char *bytes,	/* Points to string for which to find or
+				 * create an object in CompileEnv's object
+				 * array. */
+    int length,			/* Number of bytes in the string. If < 0, the
+				 * string consists of all bytes up to the
+				 * first null character. */
+    int flags)			/* If LITERAL_ON_HEAP then the caller already
+				 * malloc'd bytes and ownership is passed to
+				 * this function. If LITERAL_NS_SCOPE then
+				 * the literal shouldnot be shared accross
+				 * namespaces. */
+{
+    Interp *iPtr = envPtr->iPtr;
+    LiteralTable *localTablePtr = &(envPtr->localLitTable);
+    LiteralEntry *globalPtr, *localPtr;
+    Tcl_Obj *objPtr;
+    unsigned int hash;
+    int localHash, objIndex, new;
+    Namespace *nsPtr;
+
+    if (length < 0) {
+	length = (bytes ? strlen(bytes) : 0);
+    }
+    hash = HashString(bytes, length);
+
+    /*
+     * Is the literal already in the CompileEnv's local literal array? If so,
+     * just return its index.
+     */
+
+    localHash = (hash & localTablePtr->mask);
+    for (localPtr=localTablePtr->buckets[localHash] ; localPtr!=NULL;
+	    localPtr = localPtr->nextPtr) {
+	objPtr = localPtr->objPtr;
+	if ((objPtr->length == length) && ((length == 0)
+		|| ((objPtr->bytes[0] == bytes[0])
+		&& (memcmp(objPtr->bytes, bytes, (unsigned) length) == 0)))) {
+	    if (flags & LITERAL_ON_HEAP) {
+		ckfree(bytes);
+	    }
+	    objIndex = (localPtr - envPtr->literalArrayPtr);
+#ifdef TCL_COMPILE_DEBUG
+	    TclVerifyLocalLiteralTable(envPtr);
+#endif /*TCL_COMPILE_DEBUG*/
+
+	    return objIndex;
+	}
+    }
+
+    /*
+     * The literal is new to this CompileEnv. Should it be shared accross
+     * namespaces? If it is a fully qualified name, the namespace
+     * specification is not needed to avoid sharing.
+     */
+
+    if ((flags & LITERAL_NS_SCOPE) && iPtr->varFramePtr
+	    && ((length <2) || (bytes[0] != ':') || (bytes[1] != ':'))) {
+	nsPtr = iPtr->varFramePtr->nsPtr;
+    } else {
+	nsPtr = NULL;
+    }
+
+    /*
+     * Is it in the interpreter's global literal table? If not, create it.
+     */
+
+    objPtr = TclCreateLiteral(iPtr, bytes, length, hash, &new, nsPtr,
+	    flags, &globalPtr);
+    objIndex = AddLocalLiteralEntry(envPtr, objPtr, localHash);
+
+#ifdef TCL_COMPILE_DEBUG
+    if (globalPtr->refCount < 1) {
+	Tcl_Panic("TclRegisterLiteral: global literal \"%.*s\" had bad refCount %d",
+		(length>60? 60 : length), bytes, globalPtr->refCount);
+    }
+    TclVerifyLocalLiteralTable(envPtr);
+#endif /*TCL_COMPILE_DEBUG*/
     return objIndex;
 }
 
@@ -339,24 +413,24 @@ TclRegisterLiteral(envPtr, bytes, length, onHeap)
  * TclLookupLiteralEntry --
  *
  *	Finds the LiteralEntry that corresponds to a literal Tcl object
- *      holding a literal.
+ *	holding a literal.
  *
  * Results:
- *      Returns the matching LiteralEntry if found, otherwise NULL.
+ *	Returns the matching LiteralEntry if found, otherwise NULL.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 LiteralEntry *
-TclLookupLiteralEntry(interp, objPtr)
-    Tcl_Interp *interp;		/* Interpreter for which objPtr was created
-                                 * to hold a literal. */
-    register Tcl_Obj *objPtr;	/* Points to a Tcl object holding a
-                                 * literal that was previously created by a
-                                 * call to TclRegisterLiteral. */
+TclLookupLiteralEntry(
+    Tcl_Interp *interp,		/* Interpreter for which objPtr was created to
+				 * hold a literal. */
+    register Tcl_Obj *objPtr)	/* Points to a Tcl object holding a literal
+				 * that was previously created by a call to
+				 * TclRegisterLiteral. */
 {
     Interp *iPtr = (Interp *) interp;
     LiteralTable *globalTablePtr = &(iPtr->literalTable);
@@ -364,13 +438,13 @@ TclLookupLiteralEntry(interp, objPtr)
     char *bytes;
     int length, globalHash;
 
-    bytes = Tcl_GetStringFromObj(objPtr, &length);
+    bytes = TclGetStringFromObj(objPtr, &length);
     globalHash = (HashString(bytes, length) & globalTablePtr->mask);
-    for (entryPtr = globalTablePtr->buckets[globalHash];
-            entryPtr != NULL;  entryPtr = entryPtr->nextPtr) {
-        if (entryPtr->objPtr == objPtr) {
-            return entryPtr;
-        }
+    for (entryPtr=globalTablePtr->buckets[globalHash] ; entryPtr!=NULL;
+	    entryPtr=entryPtr->nextPtr) {
+	if (entryPtr->objPtr == objPtr) {
+	    return entryPtr;
+	}
     }
     return NULL;
 }
@@ -380,10 +454,10 @@ TclLookupLiteralEntry(interp, objPtr)
  *
  * TclHideLiteral --
  *
- *	Remove a literal entry from the literal hash tables, leaving it in
- *	the literal array so existing references continue to function.
- *	This makes it possible to turn a shared literal into a private
- *	literal that cannot be shared.
+ *	Remove a literal entry from the literal hash tables, leaving it in the
+ *	literal array so existing references continue to function. This makes
+ *	it possible to turn a shared literal into a private literal that
+ *	cannot be shared.
  *
  * Results:
  *	None.
@@ -396,13 +470,13 @@ TclLookupLiteralEntry(interp, objPtr)
  */
 
 void
-TclHideLiteral(interp, envPtr, index)
-    Tcl_Interp *interp;		 /* Interpreter for which objPtr was created
-                                  * to hold a literal. */
-    register CompileEnv *envPtr; /* Points to CompileEnv whose literal array
-				  * contains the entry being hidden. */
-    int index;			 /* The index of the entry in the literal
-				  * array. */
+TclHideLiteral(
+    Tcl_Interp *interp,		/* Interpreter for which objPtr was created to
+				 * hold a literal. */
+    register CompileEnv *envPtr,/* Points to CompileEnv whose literal array
+				 * contains the entry being hidden. */
+    int index)			/* The index of the entry in the literal
+				 * array. */
 {
     LiteralEntry **nextPtrPtr, *entryPtr, *lPtr;
     LiteralTable *localTablePtr = &(envPtr->localLitTable);
@@ -414,9 +488,9 @@ TclHideLiteral(interp, envPtr, index)
 
     /*
      * To avoid unwanted sharing we need to copy the object and remove it from
-     * the local and global literal tables.  It still has a slot in the literal
-     * array so it can be referred to by byte codes, but it will not be matched
-     * by literal searches.
+     * the local and global literal tables. It still has a slot in the literal
+     * array so it can be referred to by byte codes, but it will not be
+     * matched by literal searches.
      */
 
     newObjPtr = Tcl_DuplicateObj(lPtr->objPtr);
@@ -424,11 +498,11 @@ TclHideLiteral(interp, envPtr, index)
     TclReleaseLiteral(interp, lPtr->objPtr);
     lPtr->objPtr = newObjPtr;
 
-    bytes = Tcl_GetStringFromObj(newObjPtr, &length);
+    bytes = TclGetStringFromObj(newObjPtr, &length);
     localHash = (HashString(bytes, length) & localTablePtr->mask);
     nextPtrPtr = &localTablePtr->buckets[localHash];
 
-    for (entryPtr = *nextPtrPtr; entryPtr != NULL; entryPtr = *nextPtrPtr) {
+    for (entryPtr=*nextPtrPtr ; entryPtr!=NULL ; entryPtr=*nextPtrPtr) {
 	if (entryPtr == lPtr) {
 	    *nextPtrPtr = lPtr->nextPtr;
 	    lPtr->nextPtr = NULL;
@@ -444,31 +518,30 @@ TclHideLiteral(interp, envPtr, index)
  *
  * TclAddLiteralObj --
  *
- *	Add a single literal object to the literal array.  This
- *	function does not add the literal to the local or global
- *	literal tables.  The caller is expected to add the entry
- *	to whatever tables are appropriate.
+ *	Add a single literal object to the literal array. This function does
+ *	not add the literal to the local or global literal tables. The caller
+ *	is expected to add the entry to whatever tables are appropriate.
  *
  * Results:
  *	The index in the CompileEnv's literal array that references the
- *	literal.  Stores the pointer to the new literal entry in the
- *	location referenced by the localPtrPtr argument.
+ *	literal. Stores the pointer to the new literal entry in the location
+ *	referenced by the localPtrPtr argument.
  *
  * Side effects:
- *	Expands the literal array if necessary.  Increments the refcount
- *	on the literal object.
+ *	Expands the literal array if necessary. Increments the refcount on the
+ *	literal object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclAddLiteralObj(envPtr, objPtr, litPtrPtr)
-    register CompileEnv *envPtr; /* Points to CompileEnv in whose literal
-				  * array the object is to be inserted. */
-    Tcl_Obj *objPtr;		 /* The object to insert into the array. */
-    LiteralEntry **litPtrPtr;	 /* The location where the pointer to the
-				  * new literal entry should be stored.
-				  * May be NULL. */
+TclAddLiteralObj(
+    register CompileEnv *envPtr,/* Points to CompileEnv in whose literal array
+				 * the object is to be inserted. */
+    Tcl_Obj *objPtr,		/* The object to insert into the array. */
+    LiteralEntry **litPtrPtr)	/* The location where the pointer to the new
+				 * literal entry should be stored. May be
+				 * NULL. */
 {
     register LiteralEntry *lPtr;
     int objIndex;
@@ -504,27 +577,24 @@ TclAddLiteralObj(envPtr, objPtr, litPtrPtr)
  *	literal.
  *
  * Side effects:
- *	Increments the ref count of the global LiteralEntry since the
- *	CompileEnv now refers to the literal. Expands the literal array
- *	if necessary. May rebuild the hash bucket array of the CompileEnv's
- *	literal array if it becomes too large.
+ *	Expands the literal array if necessary. May rebuild the hash bucket
+ *      array of the CompileEnv's literal array if it becomes too large.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-AddLocalLiteralEntry(envPtr, globalPtr, localHash)
-    register CompileEnv *envPtr; /* Points to CompileEnv in whose literal
-				  * array the object is to be inserted. */
-    LiteralEntry *globalPtr;	 /* Points to the global LiteralEntry for
-				  * the literal to add to the CompileEnv. */
-    int localHash;		 /* Hash value for the literal's string. */
+AddLocalLiteralEntry(
+    register CompileEnv *envPtr,/* Points to CompileEnv in whose literal array
+				 * the object is to be inserted. */
+    Tcl_Obj *objPtr,	        /* The literal to add to the CompileEnv. */
+    int localHash)		/* Hash value for the literal's string. */
 {
     register LiteralTable *localTablePtr = &(envPtr->localLitTable);
     LiteralEntry *localPtr;
     int objIndex;
-    
-    objIndex = TclAddLiteralObj(envPtr, globalPtr->objPtr, &localPtr);
+
+    objIndex = TclAddLiteralObj(envPtr, objPtr, &localPtr);
 
     /*
      * Add the literal to the local table.
@@ -534,8 +604,6 @@ AddLocalLiteralEntry(envPtr, globalPtr, localHash)
     localTablePtr->buckets[localHash] = localPtr;
     localTablePtr->numEntries++;
 
-    globalPtr->refCount++;
-
     /*
      * If the CompileEnv's local literal table has exceeded a decent size,
      * rebuild it with more buckets.
@@ -550,22 +618,25 @@ AddLocalLiteralEntry(envPtr, globalPtr, localHash)
     {
 	char *bytes;
 	int length, found, i;
+
 	found = 0;
-	for (i = 0;  i < localTablePtr->numBuckets;  i++) {
-	    for (localPtr = localTablePtr->buckets[i];
-		    localPtr != NULL;  localPtr = localPtr->nextPtr) {
-		if (localPtr->objPtr == globalPtr->objPtr) {
+	for (i=0 ; i<localTablePtr->numBuckets ; i++) {
+	    for (localPtr=localTablePtr->buckets[i] ; localPtr!=NULL ;
+		    localPtr=localPtr->nextPtr) {
+		if (localPtr->objPtr == objPtr) {
 		    found = 1;
 		}
 	    }
 	}
+
 	if (!found) {
-	    bytes = Tcl_GetStringFromObj(globalPtr->objPtr, &length);
-	    panic("AddLocalLiteralEntry: literal \"%.*s\" wasn't found locally",
-	            (length>60? 60 : length), bytes);
+	    bytes = Tcl_GetStringFromObj(objPtr, &length);
+	    Tcl_Panic("AddLocalLiteralEntry: literal \"%.*s\" wasn't found locally",
+		    (length>60? 60 : length), bytes);
 	}
     }
 #endif /*TCL_COMPILE_DEBUG*/
+
     return objIndex;
 }
 
@@ -574,72 +645,72 @@ AddLocalLiteralEntry(envPtr, globalPtr, localHash)
  *
  * ExpandLocalLiteralArray --
  *
- *	Procedure that uses malloc to allocate more storage for a
- *	CompileEnv's local literal array.
+ *	Function that uses malloc to allocate more storage for a CompileEnv's
+ *	local literal array.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The literal array in *envPtr is reallocated to a new array of
- *	double the size, and if envPtr->mallocedLiteralArray is non-zero
- *	the old array is freed. Entries are copied from the old array
- *	to the new one. The local literal table is updated to refer to
- *	the new entries.
+ *	The literal array in *envPtr is reallocated to a new array of double
+ *	the size, and if envPtr->mallocedLiteralArray is non-zero the old
+ *	array is freed. Entries are copied from the old array to the new one.
+ *	The local literal table is updated to refer to the new entries.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-ExpandLocalLiteralArray(envPtr)
-    register CompileEnv *envPtr; /* Points to the CompileEnv whose object
-				  * array must be enlarged. */
+ExpandLocalLiteralArray(
+    register CompileEnv *envPtr)/* Points to the CompileEnv whose object array
+				 * must be enlarged. */
 {
     /*
-     * The current allocated local literal entries are stored between
-     * elements 0 and (envPtr->literalArrayNext - 1) [inclusive].
+     * The current allocated local literal entries are stored between elements
+     * 0 and (envPtr->literalArrayNext - 1) [inclusive].
      */
 
     LiteralTable *localTablePtr = &(envPtr->localLitTable);
     int currElems = envPtr->literalArrayNext;
     size_t currBytes = (currElems * sizeof(LiteralEntry));
-    register LiteralEntry *currArrayPtr = envPtr->literalArrayPtr;
-    register LiteralEntry *newArrayPtr =
-	    (LiteralEntry *) ckalloc((unsigned) (2 * currBytes));
+    LiteralEntry *currArrayPtr = envPtr->literalArrayPtr;
+    LiteralEntry *newArrayPtr;
     int i;
-    
+
+    if (envPtr->mallocedLiteralArray) {
+	newArrayPtr = (LiteralEntry *) ckrealloc(
+		(char *)currArrayPtr, 2 * currBytes);
+    } else {
+	/*
+	 * envPtr->literalArrayPtr isn't a ckalloc'd pointer, so we must
+	 * code a ckrealloc equivalent for ourselves
+	 */
+	newArrayPtr = (LiteralEntry *) ckalloc(2 * currBytes);
+	memcpy(newArrayPtr, currArrayPtr, currBytes);
+	envPtr->mallocedLiteralArray = 1;
+    }
+
     /*
-     * Copy from the old literal array to the new, then update the local
-     * literal table's bucket array.
+     * Update the local literal table's bucket array.
      */
 
-    memcpy((VOID *) newArrayPtr, (VOID *) currArrayPtr, currBytes);
-    for (i = 0;  i < currElems;  i++) {
-	if (currArrayPtr[i].nextPtr == NULL) {
-	    newArrayPtr[i].nextPtr = NULL;
-	} else {
-	    newArrayPtr[i].nextPtr = newArrayPtr
-		    + (currArrayPtr[i].nextPtr - currArrayPtr);
+    if (currArrayPtr != newArrayPtr) {
+	for (i=0 ; i<currElems ; i++) {
+	    if (newArrayPtr[i].nextPtr != NULL) {
+		newArrayPtr[i].nextPtr = newArrayPtr 
+			+ (newArrayPtr[i].nextPtr - currArrayPtr);
+	    }
 	}
-    }
-    for (i = 0;  i < localTablePtr->numBuckets;  i++) {
-	if (localTablePtr->buckets[i] != NULL) {
-	    localTablePtr->buckets[i] = newArrayPtr
-	            + (localTablePtr->buckets[i] - currArrayPtr);
+	for (i=0 ; i<localTablePtr->numBuckets ; i++) {
+	    if (localTablePtr->buckets[i] != NULL) {
+		localTablePtr->buckets[i] = newArrayPtr
+			+ (localTablePtr->buckets[i] - currArrayPtr);
+	    }
 	}
     }
 
-    /*
-     * Free the old literal array if needed, and mark the new literal
-     * array as malloced.
-     */
-    
-    if (envPtr->mallocedLiteralArray) {
-	ckfree((char *) currArrayPtr);
-    }
     envPtr->literalArrayPtr = newArrayPtr;
     envPtr->literalArrayEnd = (2 * currElems);
-    envPtr->mallocedLiteralArray = 1;
 }
 
 /*
@@ -647,59 +718,56 @@ ExpandLocalLiteralArray(envPtr)
  *
  * TclReleaseLiteral --
  *
- *	This procedure releases a reference to one of the shared Tcl objects
- *	that hold literals. It is called to release the literals referenced
- *	by a ByteCode that is being destroyed, and it is also called by
+ *	This function releases a reference to one of the shared Tcl objects
+ *	that hold literals. It is called to release the literals referenced by
+ *	a ByteCode that is being destroyed, and it is also called by
  *	TclDeleteLiteralTable.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The reference count for the global LiteralTable entry that 
- *	corresponds to the literal is decremented. If no other reference
- *	to a global literal object remains, it is freed.
+ *	The reference count for the global LiteralTable entry that corresponds
+ *	to the literal is decremented. If no other reference to a global
+ *	literal object remains, it is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclReleaseLiteral(interp, objPtr)
-    Tcl_Interp *interp;		/* Interpreter for which objPtr was created
-				 * to hold a literal. */
-    register Tcl_Obj *objPtr;	/* Points to a literal object that was
+TclReleaseLiteral(
+    Tcl_Interp *interp,		/* Interpreter for which objPtr was created to
+				 * hold a literal. */
+    register Tcl_Obj *objPtr)	/* Points to a literal object that was
 				 * previously created by a call to
 				 * TclRegisterLiteral. */
 {
     Interp *iPtr = (Interp *) interp;
     LiteralTable *globalTablePtr = &(iPtr->literalTable);
     register LiteralEntry *entryPtr, *prevPtr;
-    ByteCode* codePtr;
     char *bytes;
     int length, index;
 
-    bytes = Tcl_GetStringFromObj(objPtr, &length);
+    bytes = TclGetStringFromObj(objPtr, &length);
     index = (HashString(bytes, length) & globalTablePtr->mask);
 
     /*
-     * Check to see if the object is in the global literal table and 
-     * remove this reference.  The object may not be in the table if
-     * it is a hidden local literal.
+     * Check to see if the object is in the global literal table and remove
+     * this reference. The object may not be in the table if it is a hidden
+     * local literal.
      */
 
-    for (prevPtr = NULL, entryPtr = globalTablePtr->buckets[index];
-	    entryPtr != NULL;
-	    prevPtr = entryPtr, entryPtr = entryPtr->nextPtr) {
+    for (prevPtr=NULL, entryPtr=globalTablePtr->buckets[index];
+	    entryPtr!=NULL ; prevPtr=entryPtr, entryPtr=entryPtr->nextPtr) {
 	if (entryPtr->objPtr == objPtr) {
 	    entryPtr->refCount--;
 
 	    /*
-	     * If the literal is no longer being used by any ByteCode,
-	     * delete the entry then remove the reference corresponding 
-	     * to the global literal table entry (decrement the ref count 
-	     * of the object).
+	     * If the literal is no longer being used by any ByteCode, delete
+	     * the entry then remove the reference corresponding to the global
+	     * literal table entry (decrement the ref count of the object).
 	     */
-		
+
 	    if (entryPtr->refCount == 0) {
 		if (prevPtr == NULL) {
 		    globalTablePtr->buckets[index] = entryPtr->nextPtr;
@@ -711,22 +779,6 @@ TclReleaseLiteral(interp, objPtr)
 
 		TclDecrRefCount(objPtr);
 
-		/*
-		 * Check if the LiteralEntry is only being kept alive by 
-		 * a circular reference from a ByteCode stored as its 
-		 * internal rep. In that case, set the ByteCode object array 
-		 * entry NULL to signal to TclCleanupByteCode to not try to 
-		 * release this about to be freed literal again.
-		 */
-	    
-		if (objPtr->typePtr == &tclByteCodeType) {
-		    codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr;
-		    if ((codePtr->numLitObjects == 1)
-		            && (codePtr->objArrayPtr[0] == objPtr)) {			
-			codePtr->objArrayPtr[0] = NULL;
-		    }
-		}
-
 #ifdef TCL_COMPILE_STATS
 		iPtr->stats.currentLitStringBytes -= (double) (length + 1);
 #endif /*TCL_COMPILE_STATS*/
@@ -734,10 +786,9 @@ TclReleaseLiteral(interp, objPtr)
 	    break;
 	}
     }
-    
+
     /*
-     * Remove the reference corresponding to the local literal table
-     * entry.
+     * Remove the reference corresponding to the local literal table entry.
      */
 
     Tcl_DecrRefCount(objPtr);
@@ -748,12 +799,11 @@ TclReleaseLiteral(interp, objPtr)
  *
  * HashString --
  *
- *	Compute a one-word summary of a text string, which can be
- *	used to generate a hash index.
+ *	Compute a one-word summary of a text string, which can be used to
+ *	generate a hash index.
  *
  * Results:
- *	The return value is a one-word summary of the information in
- *	string.
+ *	The return value is a one-word summary of the information in string.
  *
  * Side effects:
  *	None.
@@ -762,33 +812,32 @@ TclReleaseLiteral(interp, objPtr)
  */
 
 static unsigned int
-HashString(bytes, length)
-    register CONST char *bytes; /* String for which to compute hash
-				 * value. */
-    int length;			/* Number of bytes in the string. */
+HashString(
+    register const char *bytes,	/* String for which to compute hash value. */
+    int length)			/* Number of bytes in the string. */
 {
     register unsigned int result;
     register int i;
 
     /*
-     * I tried a zillion different hash functions and asked many other
-     * people for advice.  Many people had their own favorite functions,
-     * all different, but no-one had much idea why they were good ones.
-     * I chose the one below (multiply by 9 and add new character)
-     * because of the following reasons:
+     * I tried a zillion different hash functions and asked many other people
+     * for advice. Many people had their own favorite functions, all
+     * different, but no-one had much idea why they were good ones. I chose
+     * the one below (multiply by 9 and add new character) because of the
+     * following reasons:
      *
-     * 1. Multiplying by 10 is perfect for keys that are decimal strings,
-     *    and multiplying by 9 is just about as good.
-     * 2. Times-9 is (shift-left-3) plus (old).  This means that each
-     *    character's bits hang around in the low-order bits of the
-     *    hash value for ever, plus they spread fairly rapidly up to
-     *    the high-order bits to fill out the hash value.  This seems
-     *    works well both for decimal and non-decimal strings.
+     * 1. Multiplying by 10 is perfect for keys that are decimal strings, and
+     *	  multiplying by 9 is just about as good.
+     * 2. Times-9 is (shift-left-3) plus (old). This means that each
+     *	  character's bits hang around in the low-order bits of the hash value
+     *	  for ever, plus they spread fairly rapidly up to the high-order bits
+     *	  to fill out the hash value. This seems works well both for decimal
+     *	  and non-decimal strings.
      */
 
     result = 0;
-    for (i = 0;  i < length;  i++) {
-	result += (result<<3) + *bytes++;
+    for (i=0 ; i<length ; i++) {
+	result += (result<<3) + bytes[i];
     }
     return result;
 }
@@ -798,9 +847,9 @@ HashString(bytes, length)
  *
  * RebuildLiteralTable --
  *
- *	This procedure is invoked when the ratio of entries to hash buckets
- *	becomes too large in a local or global literal table. It allocates
- *	a larger bucket array and moves the entries into the new buckets.
+ *	This function is invoked when the ratio of entries to hash buckets
+ *	becomes too large in a local or global literal table. It allocates a
+ *	larger bucket array and moves the entries into the new buckets.
  *
  * Results:
  *	None.
@@ -812,8 +861,9 @@ HashString(bytes, length)
  */
 
 static void
-RebuildLiteralTable(tablePtr)
-    register LiteralTable *tablePtr; /* Local or global table to enlarge. */
+RebuildLiteralTable(
+    register LiteralTable *tablePtr)
+				/* Local or global table to enlarge. */
 {
     LiteralEntry **oldBuckets;
     register LiteralEntry **oldChainPtr, **newChainPtr;
@@ -826,16 +876,15 @@ RebuildLiteralTable(tablePtr)
     oldBuckets = tablePtr->buckets;
 
     /*
-     * Allocate and initialize the new bucket array, and set up
-     * hashing constants for new array size.
+     * Allocate and initialize the new bucket array, and set up hashing
+     * constants for new array size.
      */
 
     tablePtr->numBuckets *= 4;
     tablePtr->buckets = (LiteralEntry **) ckalloc((unsigned)
 	    (tablePtr->numBuckets * sizeof(LiteralEntry *)));
-    for (count = tablePtr->numBuckets, newChainPtr = tablePtr->buckets;
-	    count > 0;
-	    count--, newChainPtr++) {
+    for (count=tablePtr->numBuckets, newChainPtr=tablePtr->buckets;
+	    count>0 ; count--, newChainPtr++) {
 	*newChainPtr = NULL;
     }
     tablePtr->rebuildSize *= 4;
@@ -845,14 +894,11 @@ RebuildLiteralTable(tablePtr)
      * Rehash all of the existing entries into the new bucket array.
      */
 
-    for (oldChainPtr = oldBuckets;
-	    oldSize > 0;
-	    oldSize--, oldChainPtr++) {
-	for (entryPtr = *oldChainPtr;  entryPtr != NULL;
-	        entryPtr = *oldChainPtr) {
-	    bytes = Tcl_GetStringFromObj(entryPtr->objPtr, &length);
+    for (oldChainPtr=oldBuckets ; oldSize>0 ; oldSize--,oldChainPtr++) {
+	for (entryPtr=*oldChainPtr ; entryPtr!=NULL ; entryPtr=*oldChainPtr) {
+	    bytes = TclGetStringFromObj(entryPtr->objPtr, &length);
 	    index = (HashString(bytes, length) & tablePtr->mask);
-	    
+
 	    *oldChainPtr = entryPtr->nextPtr;
 	    bucketPtr = &(tablePtr->buckets[index]);
 	    entryPtr->nextPtr = *bucketPtr;
@@ -875,13 +921,12 @@ RebuildLiteralTable(tablePtr)
  *
  * TclLiteralStats --
  *
- *	Return statistics describing the layout of the hash table
- *	in its hash buckets.
+ *	Return statistics describing the layout of the hash table in its hash
+ *	buckets.
  *
  * Results:
- *	The return value is a malloc-ed string containing information
- *	about tablePtr.  It is the caller's responsibility to free
- *	this string.
+ *	The return value is a malloc-ed string containing information about
+ *	tablePtr. It is the caller's responsibility to free this string.
  *
  * Side effects:
  *	None.
@@ -890,8 +935,8 @@ RebuildLiteralTable(tablePtr)
  */
 
 char *
-TclLiteralStats(tablePtr)
-    LiteralTable *tablePtr;	/* Table for which to produce stats. */
+TclLiteralStats(
+    LiteralTable *tablePtr)	/* Table for which to produce stats. */
 {
 #define NUM_COUNTERS 10
     int count[NUM_COUNTERS], overflow, i, j;
@@ -900,19 +945,19 @@ TclLiteralStats(tablePtr)
     char *result, *p;
 
     /*
-     * Compute a histogram of bucket usage. For each bucket chain i,
-     * j is the number of entries in the chain.
+     * Compute a histogram of bucket usage. For each bucket chain i, j is the
+     * number of entries in the chain.
      */
 
-    for (i = 0;  i < NUM_COUNTERS;  i++) {
+    for (i=0 ; i<NUM_COUNTERS ; i++) {
 	count[i] = 0;
     }
     overflow = 0;
     average = 0.0;
-    for (i = 0;  i < tablePtr->numBuckets;  i++) {
+    for (i=0 ; i<tablePtr->numBuckets ; i++) {
 	j = 0;
-	for (entryPtr = tablePtr->buckets[i];  entryPtr != NULL;
-	        entryPtr = entryPtr->nextPtr) {
+	for (entryPtr=tablePtr->buckets[i] ; entryPtr!=NULL;
+		entryPtr=entryPtr->nextPtr) {
 	    j++;
 	}
 	if (j < NUM_COUNTERS) {
@@ -932,7 +977,7 @@ TclLiteralStats(tablePtr)
     sprintf(result, "%d entries in table, %d buckets\n",
 	    tablePtr->numEntries, tablePtr->numBuckets);
     p = result + strlen(result);
-    for (i = 0; i < NUM_COUNTERS; i++) {
+    for (i=0 ; i<NUM_COUNTERS ; i++) {
 	sprintf(p, "number of buckets with %d entries: %d\n",
 		i, count[i]);
 	p += strlen(p);
@@ -957,15 +1002,15 @@ TclLiteralStats(tablePtr)
  *	None.
  *
  * Side effects:
- *	Panics if problems are found.
+ *	Tcl_Panic if problems are found.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclVerifyLocalLiteralTable(envPtr)
-    CompileEnv *envPtr;		/* Points to CompileEnv whose literal
-				 * table is to be validated. */
+TclVerifyLocalLiteralTable(
+    CompileEnv *envPtr)		/* Points to CompileEnv whose literal table is
+				 * to be validated. */
 {
     register LiteralTable *localTablePtr = &(envPtr->localLitTable);
     register LiteralEntry *localPtr;
@@ -974,30 +1019,29 @@ TclVerifyLocalLiteralTable(envPtr)
     int length, count;
 
     count = 0;
-    for (i = 0;  i < localTablePtr->numBuckets;  i++) {
-	for (localPtr = localTablePtr->buckets[i];
-	        localPtr != NULL;  localPtr = localPtr->nextPtr) {
+    for (i=0 ; i<localTablePtr->numBuckets ; i++) {
+	for (localPtr=localTablePtr->buckets[i] ; localPtr!=NULL;
+		localPtr=localPtr->nextPtr) {
 	    count++;
 	    if (localPtr->refCount != -1) {
 		bytes = Tcl_GetStringFromObj(localPtr->objPtr, &length);
-		panic("TclVerifyLocalLiteralTable: local literal \"%.*s\" had bad refCount %d",
-		        (length>60? 60 : length), bytes,
-		        localPtr->refCount);
+		Tcl_Panic("TclVerifyLocalLiteralTable: local literal \"%.*s\" had bad refCount %d",
+			(length>60? 60 : length), bytes, localPtr->refCount);
 	    }
 	    if (TclLookupLiteralEntry((Tcl_Interp *) envPtr->iPtr,
 		    localPtr->objPtr) == NULL) {
 		bytes = Tcl_GetStringFromObj(localPtr->objPtr, &length);
-		panic("TclVerifyLocalLiteralTable: local literal \"%.*s\" is not global",
-		         (length>60? 60 : length), bytes);
+		Tcl_Panic("TclVerifyLocalLiteralTable: local literal \"%.*s\" is not global",
+			(length>60? 60 : length), bytes);
 	    }
 	    if (localPtr->objPtr->bytes == NULL) {
-		panic("TclVerifyLocalLiteralTable: literal has NULL string rep");
+		Tcl_Panic("TclVerifyLocalLiteralTable: literal has NULL string rep");
 	    }
 	}
     }
     if (count != localTablePtr->numEntries) {
-	panic("TclVerifyLocalLiteralTable: local literal table had %d entries, should be %d",
-	      count, localTablePtr->numEntries);
+	Tcl_Panic("TclVerifyLocalLiteralTable: local literal table had %d entries, should be %d",
+		count, localTablePtr->numEntries);
     }
 }
 
@@ -1012,15 +1056,15 @@ TclVerifyLocalLiteralTable(envPtr)
  *	None.
  *
  * Side effects:
- *	Panics if problems are found.
+ *	Tcl_Panic if problems are found.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclVerifyGlobalLiteralTable(iPtr)
-    Interp *iPtr;		/* Points to interpreter whose global
-				 * literal table is to be validated. */
+TclVerifyGlobalLiteralTable(
+    Interp *iPtr)		/* Points to interpreter whose global literal
+				 * table is to be validated. */
 {
     register LiteralTable *globalTablePtr = &(iPtr->literalTable);
     register LiteralEntry *globalPtr;
@@ -1029,24 +1073,31 @@ TclVerifyGlobalLiteralTable(iPtr)
     int length, count;
 
     count = 0;
-    for (i = 0;  i < globalTablePtr->numBuckets;  i++) {
-	for (globalPtr = globalTablePtr->buckets[i];
-	        globalPtr != NULL;  globalPtr = globalPtr->nextPtr) {
+    for (i=0 ; i<globalTablePtr->numBuckets ; i++) {
+	for (globalPtr=globalTablePtr->buckets[i] ; globalPtr!=NULL;
+		globalPtr=globalPtr->nextPtr) {
 	    count++;
 	    if (globalPtr->refCount < 1) {
 		bytes = Tcl_GetStringFromObj(globalPtr->objPtr, &length);
-		panic("TclVerifyGlobalLiteralTable: global literal \"%.*s\" had bad refCount %d",
-		        (length>60? 60 : length), bytes,
-		        globalPtr->refCount);
+		Tcl_Panic("TclVerifyGlobalLiteralTable: global literal \"%.*s\" had bad refCount %d",
+			(length>60? 60 : length), bytes, globalPtr->refCount);
 	    }
 	    if (globalPtr->objPtr->bytes == NULL) {
-		panic("TclVerifyGlobalLiteralTable: literal has NULL string rep");
+		Tcl_Panic("TclVerifyGlobalLiteralTable: literal has NULL string rep");
 	    }
 	}
     }
     if (count != globalTablePtr->numEntries) {
-	panic("TclVerifyGlobalLiteralTable: global literal table had %d entries, should be %d",
-	      count, globalTablePtr->numEntries);
+	Tcl_Panic("TclVerifyGlobalLiteralTable: global literal table had %d entries, should be %d",
+		count, globalTablePtr->numEntries);
     }
 }
 #endif /*TCL_COMPILE_DEBUG*/
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclLoad.c b/generic/tclLoad.c
index 0caa28b..ac863b9 100644
--- a/generic/tclLoad.c
+++ b/generic/tclLoad.c
@@ -1,59 +1,69 @@
-/* 
+/*
  * tclLoad.c --
  *
- *	This file provides the generic portion (those that are the same
- *	on all platforms) of Tcl's dynamic loading facilities.
+ *	This file provides the generic portion (those that are the same on all
+ *	platforms) of Tcl's dynamic loading facilities.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * The following structure describes a package that has been loaded
- * either dynamically (with the "load" command) or statically (as
- * indicated by a call to TclGetLoadedPackages).  All such packages
- * are linked together into a single list for the process.  Packages
- * are never unloaded, until the application exits, when 
- * TclFinalizeLoad is called, and these structures are freed.
+ * The following structure describes a package that has been loaded either
+ * dynamically (with the "load" command) or statically (as indicated by a call
+ * to TclGetLoadedPackages). All such packages are linked together into a
+ * single list for the process. Packages are never unloaded, until the
+ * application exits, when TclFinalizeLoad is called, and these structures are
+ * freed.
  */
 
 typedef struct LoadedPackage {
-    char *fileName;		/* Name of the file from which the
-				 * package was loaded.  An empty string
-				 * means the package is loaded statically.
-				 * Malloc-ed. */
+    char *fileName;		/* Name of the file from which the package was
+				 * loaded. An empty string means the package
+				 * is loaded statically. Malloc-ed. */
     char *packageName;		/* Name of package prefix for the package,
 				 * properly capitalized (first letter UC,
-				 * others LC), no "_", as in "Net". 
+				 * others LC), no "_", as in "Net".
 				 * Malloc-ed. */
     Tcl_LoadHandle loadHandle;	/* Token for the loaded file which should be
 				 * passed to (*unLoadProcPtr)() when the file
-				 * is no longer needed.  If fileName is NULL,
+				 * is no longer needed. If fileName is NULL,
 				 * then this field is irrelevant. */
     Tcl_PackageInitProc *initProc;
-				/* Initialization procedure to call to
+				/* Initialization function to call to
 				 * incorporate this package into a trusted
 				 * interpreter. */
     Tcl_PackageInitProc *safeInitProc;
-				/* Initialization procedure to call to
+				/* Initialization function to call to
 				 * incorporate this package into a safe
 				 * interpreter (one that will execute
-				 * untrusted scripts).   NULL means the
-				 * package can't be used in unsafe
-				 * interpreters. */
+				 * untrusted scripts). NULL means the package
+				 * can't be used in unsafe interpreters. */
+    Tcl_PackageUnloadProc *unloadProc;
+				/* Finalisation function to unload a package
+				 * from a trusted interpreter. NULL means that
+				 * the package cannot be unloaded. */
+    Tcl_PackageUnloadProc *safeUnloadProc;
+				/* Finalisation function to unload a package
+				 * from a safe interpreter. NULL means that
+				 * the package cannot be unloaded. */
+    int interpRefCount;		/* How many times the package has been loaded
+				 * in trusted interpreters. */
+    int safeInterpRefCount;	/* How many times the package has been loaded
+				 * in safe interpreters. */
     Tcl_FSUnloadFileProc *unLoadProcPtr;
-				/* Procedure to use to unload this package.
-				 * If NULL, then we do not attempt to unload
-				 * the package.  If fileName is NULL, then
-				 * this field is irrelevant. */
+				/* Function to use to unload this package. If
+				 * NULL, then we do not attempt to unload the
+				 * package. If fileName is NULL, then this
+				 * field is irrelevant. */
     struct LoadedPackage *nextPtr;
 				/* Next in list of all packages loaded into
-				 * this application process.  NULL means
-				 * end of list. */
+				 * this application process. NULL means end of
+				 * list. */
 } LoadedPackage;
 
 /*
@@ -69,35 +79,35 @@ static LoadedPackage *firstPackagePtr = NULL;
 TCL_DECLARE_MUTEX(packageMutex)
 
 /*
- * The following structure represents a particular package that has
- * been incorporated into a particular interpreter (by calling its
- * initialization procedure).  There is a list of these structures for
- * each interpreter, with an AssocData value (key "load") for the
- * interpreter that points to the first package (if any).
+ * The following structure represents a particular package that has been
+ * incorporated into a particular interpreter (by calling its initialization
+ * function). There is a list of these structures for each interpreter, with
+ * an AssocData value (key "load") for the interpreter that points to the
+ * first package (if any).
  */
 
 typedef struct InterpPackage {
     LoadedPackage *pkgPtr;	/* Points to detailed information about
 				 * package. */
     struct InterpPackage *nextPtr;
-				/* Next package in this interpreter, or
-				 * NULL for end of list. */
+				/* Next package in this interpreter, or NULL
+				 * for end of list. */
 } InterpPackage;
 
 /*
- * Prototypes for procedures that are private to this file:
+ * Prototypes for functions that are private to this file:
  */
 
-static void		LoadCleanupProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp));
+static void		LoadCleanupProc(ClientData clientData,
+			    Tcl_Interp *interp);
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_LoadObjCmd --
  *
- *	This procedure is invoked to process the "load" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "load" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -109,36 +119,41 @@ static void		LoadCleanupProc _ANSI_ARGS_((ClientData clientData,
  */
 
 int
-Tcl_LoadObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LoadObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Interp *target;
     LoadedPackage *pkgPtr, *defaultPtr;
     Tcl_DString pkgName, tmp, initName, safeInitName;
-    Tcl_PackageInitProc *initProc, *safeInitProc;
+    Tcl_DString unloadName, safeUnloadName;
+    Tcl_PackageInitProc *initProc, *safeInitProc, *unloadProc, *safeUnloadProc;
     InterpPackage *ipFirstPtr, *ipPtr;
-    int code, namesMatch, filesMatch;
+    int code, namesMatch, filesMatch, offset;
+    const char *symbols[4];
+    Tcl_PackageInitProc **procPtrs[4];
+    ClientData clientData;
     char *p, *fullFileName, *packageName;
     Tcl_LoadHandle loadHandle;
     Tcl_FSUnloadFileProc *unLoadProcPtr = NULL;
     Tcl_UniChar ch;
-    int offset;
 
     if ((objc < 2) || (objc > 4)) {
-        Tcl_WrongNumArgs(interp, 1, objv, "fileName ?packageName? ?interp?");
+	Tcl_WrongNumArgs(interp, 1, objv, "fileName ?packageName? ?interp?");
 	return TCL_ERROR;
     }
     if (Tcl_FSConvertToPathType(interp, objv[1]) != TCL_OK) {
 	return TCL_ERROR;
     }
     fullFileName = Tcl_GetString(objv[1]);
-    
+
     Tcl_DStringInit(&pkgName);
     Tcl_DStringInit(&initName);
     Tcl_DStringInit(&safeInitName);
+    Tcl_DStringInit(&unloadName);
+    Tcl_DStringInit(&safeUnloadName);
     Tcl_DStringInit(&tmp);
 
     packageName = NULL;
@@ -162,23 +177,25 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 
     target = interp;
     if (objc == 4) {
-	char *slaveIntName;
-	slaveIntName = Tcl_GetString(objv[3]);
+	char *slaveIntName = Tcl_GetString(objv[3]);
+
 	target = Tcl_GetSlave(interp, slaveIntName);
 	if (target == NULL) {
-	    return TCL_ERROR;
+	    code = TCL_ERROR;
+	    goto done;
 	}
     }
 
     /*
      * Scan through the packages that are currently loaded to see if the
-     * package we want is already loaded.  We'll use a loaded package if
-     * it meets any of the following conditions:
+     * package we want is already loaded. We'll use a loaded package if it
+     * meets any of the following conditions:
      *  - Its name and file match the once we're looking for.
      *  - Its file matches, and we weren't given a name.
-     *  - Its name matches, the file name was specified as empty, and there
-     *    is only no statically loaded package with the same name.
+     *  - Its name matches, the file name was specified as empty, and there is
+     *	  only no statically loaded package with the same name.
      */
+
     Tcl_MutexLock(&packageMutex);
 
     defaultPtr = NULL;
@@ -210,13 +227,12 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 	}
 	if (filesMatch && !namesMatch && (fullFileName[0] != 0)) {
 	    /*
-	     * Can't have two different packages loaded from the same
-	     * file.
+	     * Can't have two different packages loaded from the same file.
 	     */
 
 	    Tcl_AppendResult(interp, "file \"", fullFileName,
 		    "\" is already loaded for package \"",
-		    pkgPtr->packageName, "\"", (char *) NULL);
+		    pkgPtr->packageName, "\"", NULL);
 	    code = TCL_ERROR;
 	    Tcl_MutexUnlock(&packageMutex);
 	    goto done;
@@ -229,13 +245,13 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 
     /*
      * Scan through the list of packages already loaded in the target
-     * interpreter.  If the package we want is already loaded there,
-     * then there's nothing for us to to.
+     * interpreter. If the package we want is already loaded there, then
+     * there's nothing for us to do.
      */
 
     if (pkgPtr != NULL) {
-	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
-		(Tcl_InterpDeleteProc **) NULL);
+	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target,
+		"tclLoad", NULL);
 	for (ipPtr = ipFirstPtr; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
 	    if (ipPtr->pkgPtr == pkgPtr) {
 		code = TCL_OK;
@@ -246,13 +262,13 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 
     if (pkgPtr == NULL) {
 	/*
-	 * The desired file isn't currently loaded, so load it.  It's an
-	 * error if the desired package is a static one.
+	 * The desired file isn't currently loaded, so load it. It's an error
+	 * if the desired package is a static one.
 	 */
 
 	if (fullFileName[0] == 0) {
 	    Tcl_AppendResult(interp, "package \"", packageName,
-		    "\" isn't loaded statically", (char *) NULL);
+		    "\" isn't loaded statically", NULL);
 	    code = TCL_ERROR;
 	    goto done;
 	}
@@ -265,9 +281,11 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 	    Tcl_DStringAppend(&pkgName, packageName, -1);
 	} else {
 	    int retc;
+
 	    /*
 	     * Threading note - this call used to be protected by a mutex.
 	     */
+
 	    retc = TclGuessPackageName(fullFileName, &pkgName);
 	    if (!retc) {
 		Tcl_Obj *splitPtr;
@@ -276,11 +294,11 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 		char *pkgGuess;
 
 		/*
-		 * The platform-specific code couldn't figure out the
-		 * module name.  Make a guess by taking the last element
-		 * of the file name, stripping off any leading "lib",
-		 * and then using all of the alphabetic and underline
-		 * characters that follow that.
+		 * The platform-specific code couldn't figure out the module
+		 * name. Make a guess by taking the last element of the file
+		 * name, stripping off any leading "lib", and then using all
+		 * of the alphabetic and underline characters that follow
+		 * that.
 		 */
 
 		splitPtr = Tcl_FSSplitPath(objv[1], &pElements);
@@ -308,7 +326,7 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 		    Tcl_DecrRefCount(splitPtr);
 		    Tcl_AppendResult(interp,
 			    "couldn't figure out package name for ",
-			    fullFileName, (char *) NULL);
+			    fullFileName, NULL);
 		    code = TCL_ERROR;
 		    goto done;
 		}
@@ -322,36 +340,50 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 	 * character is in caps (or title case) but the others are all
 	 * lower-case.
 	 */
-    
+
 	Tcl_DStringSetLength(&pkgName,
 		Tcl_UtfToTitle(Tcl_DStringValue(&pkgName)));
 
 	/*
-	 * Compute the names of the two initialization procedures,
-	 * based on the package name.
+	 * Compute the names of the two initialization functions, based on the
+	 * package name.
 	 */
-    
+
 	Tcl_DStringAppend(&initName, Tcl_DStringValue(&pkgName), -1);
 	Tcl_DStringAppend(&initName, "_Init", 5);
 	Tcl_DStringAppend(&safeInitName, Tcl_DStringValue(&pkgName), -1);
 	Tcl_DStringAppend(&safeInitName, "_SafeInit", 9);
+	Tcl_DStringAppend(&unloadName, Tcl_DStringValue(&pkgName), -1);
+	Tcl_DStringAppend(&unloadName, "_Unload", 7);
+	Tcl_DStringAppend(&safeUnloadName, Tcl_DStringValue(&pkgName), -1);
+	Tcl_DStringAppend(&safeUnloadName, "_SafeUnload", 11);
 
 	/*
-	 * Call platform-specific code to load the package and find the
-	 * two initialization procedures.
+	 * Call platform-specific code to load the package and find the two
+	 * initialization functions.
 	 */
 
+	symbols[0] = Tcl_DStringValue(&initName);
+	symbols[1] = Tcl_DStringValue(&safeInitName);
+	symbols[2] = Tcl_DStringValue(&unloadName);
+	symbols[3] = Tcl_DStringValue(&safeUnloadName);
+	procPtrs[0] = &initProc;
+	procPtrs[1] = &safeInitProc;
+	procPtrs[2] = &unloadProc;
+	procPtrs[3] = &safeUnloadProc;
+
 	Tcl_MutexLock(&packageMutex);
-	code = Tcl_FSLoadFile(interp, objv[1], Tcl_DStringValue(&initName),
-		Tcl_DStringValue(&safeInitName), &initProc, &safeInitProc,
-		&loadHandle,&unLoadProcPtr);
+	code = TclLoadFile(interp, objv[1], 4, symbols, procPtrs,
+		&loadHandle, &clientData, &unLoadProcPtr);
 	Tcl_MutexUnlock(&packageMutex);
+	loadHandle = (Tcl_LoadHandle) clientData;
 	if (code != TCL_OK) {
 	    goto done;
 	}
-	if (initProc == NULL) {
+
+	if (*procPtrs[0] /* initProc */ == NULL) {
 	    Tcl_AppendResult(interp, "couldn't find procedure ",
-		    Tcl_DStringValue(&initName), (char *) NULL);
+		    Tcl_DStringValue(&initName), NULL);
 	    if (unLoadProcPtr != NULL) {
 		(*unLoadProcPtr)(loadHandle);
 	    }
@@ -364,26 +396,30 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 	 */
 
 	pkgPtr = (LoadedPackage *) ckalloc(sizeof(LoadedPackage));
-	pkgPtr->fileName	= (char *) ckalloc((unsigned)
+	pkgPtr->fileName	   = (char *) ckalloc((unsigned)
 		(strlen(fullFileName) + 1));
 	strcpy(pkgPtr->fileName, fullFileName);
-	pkgPtr->packageName	= (char *) ckalloc((unsigned)
+	pkgPtr->packageName	   = (char *) ckalloc((unsigned)
 		(Tcl_DStringLength(&pkgName) + 1));
 	strcpy(pkgPtr->packageName, Tcl_DStringValue(&pkgName));
-	pkgPtr->loadHandle	= loadHandle;
-	pkgPtr->unLoadProcPtr	= unLoadProcPtr;
-	pkgPtr->initProc	= initProc;
-	pkgPtr->safeInitProc	= safeInitProc;
+	pkgPtr->loadHandle	   = loadHandle;
+	pkgPtr->unLoadProcPtr	   = unLoadProcPtr;
+	pkgPtr->initProc	   = *procPtrs[0];
+	pkgPtr->safeInitProc	   = *procPtrs[1];
+	pkgPtr->unloadProc	   = (Tcl_PackageUnloadProc*) *procPtrs[2];
+	pkgPtr->safeUnloadProc	   = (Tcl_PackageUnloadProc*) *procPtrs[3];
+	pkgPtr->interpRefCount	   = 0;
+	pkgPtr->safeInterpRefCount = 0;
+
 	Tcl_MutexLock(&packageMutex);
-	pkgPtr->nextPtr		= firstPackagePtr;
-	firstPackagePtr		= pkgPtr;
+	pkgPtr->nextPtr		   = firstPackagePtr;
+	firstPackagePtr		   = pkgPtr;
 	Tcl_MutexUnlock(&packageMutex);
     }
 
     /*
-     * Invoke the package's initialization procedure (either the
-     * normal one or the safe one, depending on whether or not the
-     * interpreter is safe).
+     * Invoke the package's initialization function (either the normal one or
+     * the safe one, depending on whether or not the interpreter is safe).
      */
 
     if (Tcl_IsSafe(target)) {
@@ -391,9 +427,8 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 	    code = (*pkgPtr->safeInitProc)(target);
 	} else {
 	    Tcl_AppendResult(interp,
-		    "can't use package in a safe interpreter: ",
-		    "no ", pkgPtr->packageName, "_SafeInit procedure",
-		    (char *) NULL);
+		    "can't use package in a safe interpreter: no ",
+		    pkgPtr->packageName, "_SafeInit procedure", NULL);
 	    code = TCL_ERROR;
 	    goto done;
 	}
@@ -402,18 +437,30 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Record the fact that the package has been loaded in the
-     * target interpreter.
+     * Record the fact that the package has been loaded in the target
+     * interpreter.
      */
 
     if (code == TCL_OK) {
 	/*
+	 * Update the proper reference count.
+	 */
+
+	Tcl_MutexLock(&packageMutex);
+	if (Tcl_IsSafe(target)) {
+	    ++pkgPtr->safeInterpRefCount;
+	} else {
+	    ++pkgPtr->interpRefCount;
+	}
+	Tcl_MutexUnlock(&packageMutex);
+
+	/*
 	 * Refetch ipFirstPtr: loading the package may have introduced
 	 * additional static packages at the head of the linked list!
 	 */
 
-	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
-		(Tcl_InterpDeleteProc **) NULL);
+	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target,
+		"tclLoad", NULL);
 	ipPtr = (InterpPackage *) ckalloc(sizeof(InterpPackage));
 	ipPtr->pkgPtr = pkgPtr;
 	ipPtr->nextPtr = ipFirstPtr;
@@ -423,11 +470,434 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
 	TclTransferResult(target, code, interp);
     }
 
-    done:
+  done:
     Tcl_DStringFree(&pkgName);
     Tcl_DStringFree(&initName);
     Tcl_DStringFree(&safeInitName);
+    Tcl_DStringFree(&unloadName);
+    Tcl_DStringFree(&safeUnloadName);
+    Tcl_DStringFree(&tmp);
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_UnloadObjCmd --
+ *
+ *	This function is invoked to process the "unload" Tcl command. See the
+ *	user documentation for details on what it does.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_UnloadObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_Interp *target;		/* Which interpreter to unload from. */
+    LoadedPackage *pkgPtr, *defaultPtr;
+    Tcl_DString pkgName, tmp;
+    Tcl_PackageUnloadProc *unloadProc;
+    InterpPackage *ipFirstPtr, *ipPtr;
+    int i, index, code, complain = 1, keepLibrary = 0;
+    int trustedRefCount = -1, safeRefCount = -1;
+    const char *fullFileName = "";
+    char *packageName;
+    static const char *options[] = {
+	"-nocomplain", "-keeplibrary", "--", NULL
+    };
+    enum options {
+	UNLOAD_NOCOMPLAIN, UNLOAD_KEEPLIB, UNLOAD_LAST
+    };
+
+    for (i = 1; i < objc; i++) {
+	if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0,
+		&index) != TCL_OK) {
+	    fullFileName = Tcl_GetString(objv[i]);
+	    if (fullFileName[0] == '-') {
+		/*
+		 * It looks like the command contains an option so signal an
+		 * error
+		 */
+
+		return TCL_ERROR;
+	    } else {
+		/*
+		 * This clearly isn't an option; assume it's the filename. We
+		 * must clear the error.
+		 */
+
+		Tcl_ResetResult(interp);
+		break;
+	    }
+	}
+	switch (index) {
+	case UNLOAD_NOCOMPLAIN:		/* -nocomplain */
+	    complain = 0;
+	    break;
+	case UNLOAD_KEEPLIB:		/* -keeplibrary */
+	    keepLibrary = 1;
+	    break;
+	case UNLOAD_LAST:		/* -- */
+	    i++;
+	    goto endOfForLoop;
+	}
+    }
+  endOfForLoop:
+    if ((objc-i < 1) || (objc-i > 3)) {
+	Tcl_WrongNumArgs(interp, 1, objv,
+		"?switches? fileName ?packageName? ?interp?");
+	return TCL_ERROR;
+    }
+    if (Tcl_FSConvertToPathType(interp, objv[i]) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    fullFileName = Tcl_GetString(objv[i]);
+    Tcl_DStringInit(&pkgName);
+    Tcl_DStringInit(&tmp);
+
+    packageName = NULL;
+    if (objc - i >= 2) {
+	packageName = Tcl_GetString(objv[i+1]);
+	if (packageName[0] == '\0') {
+	    packageName = NULL;
+	}
+    }
+    if ((fullFileName[0] == 0) && (packageName == NULL)) {
+	Tcl_SetResult(interp,
+		"must specify either file name or package name",
+		TCL_STATIC);
+	code = TCL_ERROR;
+	goto done;
+    }
+
+    /*
+     * Figure out which interpreter we're going to load the package into.
+     */
+
+    target = interp;
+    if (objc - i == 3) {
+	char *slaveIntName;
+	slaveIntName = Tcl_GetString(objv[i+2]);
+	target = Tcl_GetSlave(interp, slaveIntName);
+	if (target == NULL) {
+	    return TCL_ERROR;
+	}
+    }
+
+    /*
+     * Scan through the packages that are currently loaded to see if the
+     * package we want is already loaded. We'll use a loaded package if it
+     * meets any of the following conditions:
+     *  - Its name and file match the once we're looking for.
+     *  - Its file matches, and we weren't given a name.
+     *  - Its name matches, the file name was specified as empty, and there is
+     *	  only no statically loaded package with the same name.
+     */
+
+    Tcl_MutexLock(&packageMutex);
+
+    defaultPtr = NULL;
+    for (pkgPtr = firstPackagePtr; pkgPtr != NULL; pkgPtr = pkgPtr->nextPtr) {
+	int namesMatch, filesMatch;
+
+	if (packageName == NULL) {
+	    namesMatch = 0;
+	} else {
+	    Tcl_DStringSetLength(&pkgName, 0);
+	    Tcl_DStringAppend(&pkgName, packageName, -1);
+	    Tcl_DStringSetLength(&tmp, 0);
+	    Tcl_DStringAppend(&tmp, pkgPtr->packageName, -1);
+	    Tcl_UtfToLower(Tcl_DStringValue(&pkgName));
+	    Tcl_UtfToLower(Tcl_DStringValue(&tmp));
+	    if (strcmp(Tcl_DStringValue(&tmp),
+		    Tcl_DStringValue(&pkgName)) == 0) {
+		namesMatch = 1;
+	    } else {
+		namesMatch = 0;
+	    }
+	}
+	Tcl_DStringSetLength(&pkgName, 0);
+
+	filesMatch = (strcmp(pkgPtr->fileName, fullFileName) == 0);
+	if (filesMatch && (namesMatch || (packageName == NULL))) {
+	    break;
+	}
+	if (namesMatch && (fullFileName[0] == 0)) {
+	    defaultPtr = pkgPtr;
+	}
+	if (filesMatch && !namesMatch && (fullFileName[0] != 0)) {
+	    break;
+	}
+    }
+    Tcl_MutexUnlock(&packageMutex);
+    if (fullFileName[0] == 0) {
+	/*
+	 * It's an error to try unload a static package.
+	 */
+
+	Tcl_AppendResult(interp, "package \"", packageName,
+		"\" is loaded statically and cannot be unloaded", NULL);
+	code = TCL_ERROR;
+	goto done;
+    }
+    if (pkgPtr == NULL) {
+	/*
+	 * The DLL pointed by the provided filename has never been loaded.
+	 */
+
+	Tcl_AppendResult(interp, "file \"", fullFileName,
+		"\" has never been loaded", NULL);
+	code = TCL_ERROR;
+	goto done;
+    }
+
+    /*
+     * Scan through the list of packages already loaded in the target
+     * interpreter. If the package we want is already loaded there, then we
+     * should proceed with unloading.
+     */
+
+    code = TCL_ERROR;
+    if (pkgPtr != NULL) {
+	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target,
+		"tclLoad", NULL);
+	for (ipPtr = ipFirstPtr; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
+	    if (ipPtr->pkgPtr == pkgPtr) {
+		code = TCL_OK;
+		break;
+	    }
+	}
+    }
+    if (code != TCL_OK) {
+	/*
+	 * The package has not been loaded in this interpreter.
+	 */
+
+	Tcl_AppendResult(interp, "file \"", fullFileName,
+		"\" has never been loaded in this interpreter", NULL);
+	code = TCL_ERROR;
+	goto done;
+    }
+
+    /*
+     * Ensure that the DLL can be unloaded. If it is a trusted interpreter,
+     * pkgPtr->unloadProc must not be NULL for the DLL to be unloadable. If
+     * the interpreter is a safe one, pkgPtr->safeUnloadProc must be non-NULL.
+     */
+
+    if (Tcl_IsSafe(target)) {
+	if (pkgPtr->safeUnloadProc == NULL) {
+	    Tcl_AppendResult(interp, "file \"", fullFileName,
+		    "\" cannot be unloaded under a safe interpreter", NULL);
+	    code = TCL_ERROR;
+	    goto done;
+	}
+	unloadProc = pkgPtr->safeUnloadProc;
+    } else {
+	if (pkgPtr->unloadProc == NULL) {
+	    Tcl_AppendResult(interp, "file \"", fullFileName,
+		    "\" cannot be unloaded under a trusted interpreter", NULL);
+	    code = TCL_ERROR;
+	    goto done;
+	}
+	unloadProc = pkgPtr->unloadProc;
+    }
+
+    /*
+     * We are ready to unload the package. First, evaluate the unload
+     * function. If this fails, we cannot proceed with unload. Also, we must
+     * specify the proper flag to pass to the unload callback.
+     * TCL_UNLOAD_DETACH_FROM_INTERPRETER is defined when the callback should
+     * only remove itself from the interpreter; the library will be unloaded
+     * in a future call of unload. In case the library will be unloaded just
+     * after the callback returns, TCL_UNLOAD_DETACH_FROM_PROCESS is passed.
+     */
+
+    code = TCL_UNLOAD_DETACH_FROM_INTERPRETER;
+    if (!keepLibrary) {
+	Tcl_MutexLock(&packageMutex);
+	trustedRefCount = pkgPtr->interpRefCount;
+	safeRefCount = pkgPtr->safeInterpRefCount;
+	Tcl_MutexUnlock(&packageMutex);
+
+	if (Tcl_IsSafe(target)) {
+	    --safeRefCount;
+	} else {
+	    --trustedRefCount;
+	}
+
+	if (safeRefCount <= 0 && trustedRefCount <= 0) {
+	    code = TCL_UNLOAD_DETACH_FROM_PROCESS;
+	}
+    }
+    code = (*unloadProc)(target, code);
+    if (code != TCL_OK) {
+	TclTransferResult(target, code, interp);
+	goto done;
+    }
+
+    /*
+     * The unload function executed fine. Examine the reference count to see
+     * if we unload the DLL.
+     */
+
+    Tcl_MutexLock(&packageMutex);
+    if (Tcl_IsSafe(target)) {
+	--pkgPtr->safeInterpRefCount;
+
+	/*
+	 * Do not let counter get negative.
+	 */
+
+	if (pkgPtr->safeInterpRefCount < 0) {
+	    pkgPtr->safeInterpRefCount = 0;
+	}
+    } else {
+	--pkgPtr->interpRefCount;
+
+	/*
+	 * Do not let counter get negative.
+	 */
+
+	if (pkgPtr->interpRefCount < 0) {
+	    pkgPtr->interpRefCount = 0;
+	}
+    }
+    trustedRefCount = pkgPtr->interpRefCount;
+    safeRefCount = pkgPtr->safeInterpRefCount;
+    Tcl_MutexUnlock(&packageMutex);
+
+    code = TCL_OK;
+    if (pkgPtr->safeInterpRefCount <= 0 && pkgPtr->interpRefCount <= 0
+	    && !keepLibrary) {
+	/*
+	 * Unload the shared library from the application memory...
+	 */
+
+#if defined(TCL_UNLOAD_DLLS) || defined(__WIN32__)
+	/*
+	 * Some Unix dlls are poorly behaved - registering things like atexit
+	 * calls that can't be unregistered. If you unload such dlls, you get
+	 * a core on exit because it wants to call a function in the dll after
+	 * it's been unloaded.
+	 */
+
+	if (pkgPtr->fileName[0] != '\0') {
+	    Tcl_FSUnloadFileProc *unLoadProcPtr = pkgPtr->unLoadProcPtr;
+
+	    if (unLoadProcPtr != NULL) {
+		Tcl_MutexLock(&packageMutex);
+		if ((pkgPtr->unloadProc != NULL) || (unLoadProcPtr == TclFSUnloadTempFile)) {
+		    (*unLoadProcPtr)(pkgPtr->loadHandle);
+		}
+
+		/*
+		 * Remove this library from the loaded library cache.
+		 */
+
+		defaultPtr = pkgPtr;
+		if (defaultPtr == firstPackagePtr) {
+		    firstPackagePtr = pkgPtr->nextPtr;
+		} else {
+		    for (pkgPtr = firstPackagePtr; pkgPtr != NULL;
+			    pkgPtr = pkgPtr->nextPtr) {
+			if (pkgPtr->nextPtr == defaultPtr) {
+			    pkgPtr->nextPtr = defaultPtr->nextPtr;
+			    break;
+			}
+		    }
+		}
+
+		/*
+		 * Remove this library from the interpreter's library cache.
+		 */
+
+		ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(target,
+			"tclLoad", NULL);
+		ipPtr = ipFirstPtr;
+		if (ipPtr->pkgPtr == defaultPtr) {
+		    ipFirstPtr = ipFirstPtr->nextPtr;
+		} else {
+		    InterpPackage *ipPrevPtr;
+
+		    for (ipPrevPtr = ipPtr; ipPtr != NULL;
+			    ipPrevPtr = ipPtr, ipPtr = ipPtr->nextPtr) {
+			if (ipPtr->pkgPtr == pkgPtr) {
+			    ipPrevPtr->nextPtr = ipPtr->nextPtr;
+			    break;
+			}
+		    }
+		}
+		Tcl_SetAssocData(target, "tclLoad", LoadCleanupProc,
+			(ClientData) ipFirstPtr);
+		ckfree(defaultPtr->fileName);
+		ckfree(defaultPtr->packageName);
+		ckfree((char *) defaultPtr);
+		ckfree((char *) ipPtr);
+		Tcl_MutexUnlock(&packageMutex);
+	    } else {
+		Tcl_AppendResult(interp, "file \"", fullFileName,
+			"\" cannot be unloaded: filesystem does not support unloading",
+			NULL);
+		code = TCL_ERROR;
+	    }
+	}
+#else
+	Tcl_AppendResult(interp, "file \"", fullFileName,
+		"\" cannot be unloaded: unloading disabled", NULL);
+	code = TCL_ERROR;
+#endif
+    }
+
+  done:
+    Tcl_DStringFree(&pkgName);
     Tcl_DStringFree(&tmp);
+    if (!complain && code!=TCL_OK) {
+	code = TCL_OK;
+	Tcl_ResetResult(interp);
+    }
+    if (code == TCL_OK) {
+#if 0
+	/*
+	 * Result of [unload] was not documented in TIP#100, so force to be
+	 * the empty string by commenting this out. DKF.
+	 */
+
+	Tcl_Obj *resultObjPtr, *objPtr[2];
+
+	/*
+	 * Our result is the two reference counts.
+	 */
+
+	objPtr[0] = Tcl_NewIntObj(trustedRefCount);
+	objPtr[1] = Tcl_NewIntObj(safeRefCount);
+	if (objPtr[0] == NULL || objPtr[1] == NULL) {
+	    if (objPtr[0]) {
+		Tcl_DecrRefCount(objPtr[0]);
+	    }
+	    if (objPtr[1]) {
+		Tcl_DecrRefCount(objPtr[1]);
+	    }
+	} else {
+	    resultObjPtr = Tcl_NewListObj(2, objPtr);
+	    if (resultObjPtr != NULL) {
+		Tcl_SetObjResult(interp, resultObjPtr);
+	    }
+	}
+#endif
+    }
     return code;
 }
 
@@ -436,37 +906,37 @@ Tcl_LoadObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_StaticPackage --
  *
- *	This procedure is invoked to indicate that a particular
- *	package has been linked statically with an application.
+ *	This function is invoked to indicate that a particular package has
+ *	been linked statically with an application.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Once this procedure completes, the package becomes loadable
- *	via the "load" command with an empty file name.
+ *	Once this function completes, the package becomes loadable via the
+ *	"load" command with an empty file name.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
-    Tcl_Interp *interp;			/* If not NULL, it means that the
-					 * package has already been loaded
-					 * into the given interpreter by
-					 * calling the appropriate init proc. */
-    CONST char *pkgName;		/* Name of package (must be properly
-					 * capitalized: first letter upper
-					 * case, others lower case). */
-    Tcl_PackageInitProc *initProc;	/* Procedure to call to incorporate
-					 * this package into a trusted
-					 * interpreter. */
-    Tcl_PackageInitProc *safeInitProc;	/* Procedure to call to incorporate
-					 * this package into a safe interpreter
-					 * (one that will execute untrusted
-					 * scripts).   NULL means the package
-					 * can't be used in safe
-					 * interpreters. */
+Tcl_StaticPackage(
+    Tcl_Interp *interp,		/* If not NULL, it means that the package has
+				 * already been loaded into the given
+				 * interpreter by calling the appropriate init
+				 * proc. */
+    const char *pkgName,	/* Name of package (must be properly
+				 * capitalized: first letter upper case,
+				 * others lower case). */
+    Tcl_PackageInitProc *initProc,
+				/* Function to call to incorporate this
+				 * package into a trusted interpreter. */
+    Tcl_PackageInitProc *safeInitProc)
+				/* Function to call to incorporate this
+				 * package into a safe interpreter (one that
+				 * will execute untrusted scripts). NULL means
+				 * the package can't be used in safe
+				 * interpreters. */
 {
     LoadedPackage *pkgPtr;
     InterpPackage *ipPtr, *ipFirstPtr;
@@ -487,16 +957,16 @@ Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
     Tcl_MutexUnlock(&packageMutex);
 
     /*
-     * If the package is not yet recorded as being loaded statically,
-     * add it to the list now.
+     * If the package is not yet recorded as being loaded statically, add it
+     * to the list now.
      */
 
     if ( pkgPtr == NULL ) {
 	pkgPtr = (LoadedPackage *) ckalloc(sizeof(LoadedPackage));
 	pkgPtr->fileName	= (char *) ckalloc((unsigned) 1);
 	pkgPtr->fileName[0]	= 0;
-	pkgPtr->packageName	= (char *) ckalloc((unsigned)
-						   (strlen(pkgName) + 1));
+	pkgPtr->packageName	= (char *)
+		ckalloc((unsigned) (strlen(pkgName) + 1));
 	strcpy(pkgPtr->packageName, pkgName);
 	pkgPtr->loadHandle	= NULL;
 	pkgPtr->initProc	= initProc;
@@ -510,12 +980,12 @@ Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
     if (interp != NULL) {
 
 	/*
-	 * If we're loading the package into an interpreter,
-	 * determine whether it's already loaded. 
+	 * If we're loading the package into an interpreter, determine whether
+	 * it's already loaded.
 	 */
 
-	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(interp, "tclLoad",
-		(Tcl_InterpDeleteProc **) NULL);
+	ipFirstPtr = (InterpPackage *) Tcl_GetAssocData(interp,
+		"tclLoad", NULL);
 	for ( ipPtr = ipFirstPtr; ipPtr != NULL; ipPtr = ipPtr->nextPtr ) {
 	    if ( ipPtr->pkgPtr == pkgPtr ) {
 		return;
@@ -523,8 +993,8 @@ Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
 	}
 
 	/*
-	 * Package isn't loade in the current interp yet. Mark it as
-	 * now being loaded.
+	 * Package isn't loade in the current interp yet. Mark it as now being
+	 * loaded.
 	 */
 
 	ipPtr = (InterpPackage *) ckalloc(sizeof(InterpPackage));
@@ -540,17 +1010,15 @@ Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
  *
  * TclGetLoadedPackages --
  *
- *	This procedure returns information about all of the files
- *	that are loaded (either in a particular intepreter, or
- *	for all interpreters).
+ *	This function returns information about all of the files that are
+ *	loaded (either in a particular intepreter, or for all interpreters).
  *
  * Results:
- *	The return value is a standard Tcl completion code.  If
- *	successful, a list of lists is placed in the interp's result.
- *	Each sublist corresponds to one loaded file;  its first
- *	element is the name of the file (or an empty string for
- *	something that's statically loaded) and the second element
- *	is the name of the package in that file.
+ *	The return value is a standard Tcl completion code. If successful, a
+ *	list of lists is placed in the interp's result. Each sublist
+ *	corresponds to one loaded file; its first element is the name of the
+ *	file (or an empty string for something that's statically loaded) and
+ *	the second element is the name of the package in that file.
  *
  * Side effects:
  *	None.
@@ -559,21 +1027,21 @@ Tcl_StaticPackage(interp, pkgName, initProc, safeInitProc)
  */
 
 int
-TclGetLoadedPackages(interp, targetName)
-    Tcl_Interp *interp;		/* Interpreter in which to return
-				 * information or error message. */
-    char *targetName;		/* Name of target interpreter or NULL.
-				 * If NULL, return info about all interps;
+TclGetLoadedPackages(
+    Tcl_Interp *interp,		/* Interpreter in which to return information
+				 * or error message. */
+    char *targetName)		/* Name of target interpreter or NULL. If
+				 * NULL, return info about all interps;
 				 * otherwise, just return info about this
 				 * interpreter. */
 {
     Tcl_Interp *target;
     LoadedPackage *pkgPtr;
     InterpPackage *ipPtr;
-    char *prefix;
+    const char *prefix;
 
     if (targetName == NULL) {
-	/* 
+	/*
 	 * Return information about all of the available packages.
 	 */
 
@@ -581,10 +1049,10 @@ TclGetLoadedPackages(interp, targetName)
 	Tcl_MutexLock(&packageMutex);
 	for (pkgPtr = firstPackagePtr; pkgPtr != NULL;
 		pkgPtr = pkgPtr->nextPtr) {
-	    Tcl_AppendResult(interp, prefix, (char *) NULL);
+	    Tcl_AppendResult(interp, prefix, NULL);
 	    Tcl_AppendElement(interp, pkgPtr->fileName);
 	    Tcl_AppendElement(interp, pkgPtr->packageName);
-	    Tcl_AppendResult(interp, "}", (char *) NULL);
+	    Tcl_AppendResult(interp, "}", NULL);
 	    prefix = " {";
 	}
 	Tcl_MutexUnlock(&packageMutex);
@@ -592,23 +1060,22 @@ TclGetLoadedPackages(interp, targetName)
     }
 
     /*
-     * Return information about only the packages that are loaded in
-     * a given interpreter.
+     * Return information about only the packages that are loaded in a given
+     * interpreter.
      */
 
     target = Tcl_GetSlave(interp, targetName);
     if (target == NULL) {
 	return TCL_ERROR;
     }
-    ipPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad",
-	    (Tcl_InterpDeleteProc **) NULL);
+    ipPtr = (InterpPackage *) Tcl_GetAssocData(target, "tclLoad", NULL);
     prefix = "{";
     for ( ; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
 	pkgPtr = ipPtr->pkgPtr;
-	Tcl_AppendResult(interp, prefix, (char *) NULL);
+	Tcl_AppendResult(interp, prefix, NULL);
 	Tcl_AppendElement(interp, pkgPtr->fileName);
 	Tcl_AppendElement(interp, pkgPtr->packageName);
-	Tcl_AppendResult(interp, "}", (char *) NULL);
+	Tcl_AppendResult(interp, "}", NULL);
 	prefix = " {";
     }
     return TCL_OK;
@@ -619,25 +1086,24 @@ TclGetLoadedPackages(interp, targetName)
  *
  * LoadCleanupProc --
  *
- *	This procedure is called to delete all of the InterpPackage
- *	structures for an interpreter when the interpreter is deleted.
- *	It gets invoked via the Tcl AssocData mechanism.
+ *	This function is called to delete all of the InterpPackage structures
+ *	for an interpreter when the interpreter is deleted. It gets invoked
+ *	via the Tcl AssocData mechanism.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Storage for all of the InterpPackage procedures for interp
- *	get deleted.
+ *	Storage for all of the InterpPackage functions for interp get deleted.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-LoadCleanupProc(clientData, interp)
-    ClientData clientData;	/* Pointer to first InterpPackage structure
+LoadCleanupProc(
+    ClientData clientData,	/* Pointer to first InterpPackage structure
 				 * for interp. */
-    Tcl_Interp *interp;		/* Interpreter that is being deleted. */
+    Tcl_Interp *interp)		/* Interpreter that is being deleted. */
 {
     InterpPackage *ipPtr, *nextPtr;
 
@@ -654,8 +1120,8 @@ LoadCleanupProc(clientData, interp)
  *
  * TclFinalizeLoad --
  *
- *	This procedure is invoked just before the application exits.
- *	It frees all of the LoadedPackage structures.
+ *	This function is invoked just before the application exits. It frees
+ *	all of the LoadedPackage structures.
  *
  * Results:
  *	None.
@@ -667,38 +1133,49 @@ LoadCleanupProc(clientData, interp)
  */
 
 void
-TclFinalizeLoad()
+TclFinalizeLoad(void)
 {
     LoadedPackage *pkgPtr;
 
     /*
-     * No synchronization here because there should just be
-     * one thread alive at this point.  Logically, 
-     * packageMutex should be grabbed at this point, but
-     * the Mutexes get finalized before the call to this routine.
-     * The only subsystem left alive at this point is the
-     * memory allocator.
+     * No synchronization here because there should just be one thread alive
+     * at this point. Logically, packageMutex should be grabbed at this point,
+     * but the Mutexes get finalized before the call to this routine. The
+     * only subsystem left alive at this point is the memory allocator.
      */
 
     while (firstPackagePtr != NULL) {
 	pkgPtr = firstPackagePtr;
 	firstPackagePtr = pkgPtr->nextPtr;
+
 #if defined(TCL_UNLOAD_DLLS) || defined(__WIN32__)
 	/*
-	 * Some Unix dlls are poorly behaved - registering things like
-	 * atexit calls that can't be unregistered.  If you unload
-	 * such dlls, you get a core on exit because it wants to
-	 * call a function in the dll after it's been unloaded.
+	 * Some Unix dlls are poorly behaved - registering things like atexit
+	 * calls that can't be unregistered. If you unload such dlls, you get
+	 * a core on exit because it wants to call a function in the dll after
+	 * it has been unloaded.
 	 */
+
 	if (pkgPtr->fileName[0] != '\0') {
 	    Tcl_FSUnloadFileProc *unLoadProcPtr = pkgPtr->unLoadProcPtr;
-	    if (unLoadProcPtr != NULL) {
-	        (*unLoadProcPtr)(pkgPtr->loadHandle);
+	    if ((unLoadProcPtr != NULL)
+		    && ((pkgPtr->unloadProc != NULL)
+		    || (unLoadProcPtr == TclFSUnloadTempFile))) {
+		(*unLoadProcPtr)(pkgPtr->loadHandle);
 	    }
 	}
 #endif
+
 	ckfree(pkgPtr->fileName);
 	ckfree(pkgPtr->packageName);
 	ckfree((char *) pkgPtr);
     }
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclLoadNone.c b/generic/tclLoadNone.c
index 4f795aa..af4ca81 100644
--- a/generic/tclLoadNone.c
+++ b/generic/tclLoadNone.c
@@ -1,14 +1,13 @@
-/* 
+/*
  * tclLoadNone.c --
  *
- *	This procedure provides a version of the TclLoadFile for use
- *	in systems that don't support dynamic loading; it just returns
- *	an error.
+ *	This procedure provides a version of the TclLoadFile for use in
+ *	systems that don't support dynamic loading; it just returns an error.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
@@ -18,13 +17,13 @@
  *
  * TclpDlopen --
  *
- *	This procedure is called to carry out dynamic loading of binary
- *	code;  it is intended for use only on systems that don't support
- *	dynamic loading (it returns an error).
+ *	This procedure is called to carry out dynamic loading of binary code;
+ *	it is intended for use only on systems that don't support dynamic
+ *	loading (it returns an error).
  *
  * Results:
- *	The result is TCL_ERROR, and an error message is left in
- *	the interp's result.
+ *	The result is TCL_ERROR, and an error message is left in the interp's
+ *	result.
  *
  * Side effects:
  *	None.
@@ -33,17 +32,17 @@
  */
 
 int
-TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Obj *pathPtr;		/* Name of the file containing the desired
+TclpDlopen(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *pathPtr,		/* Name of the file containing the desired
 				 * code (UTF-8). */
-    Tcl_LoadHandle *loadHandle;	/* Filled with token for dynamically loaded
-				 * file which will be passed back to 
+    Tcl_LoadHandle *loadHandle,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
 				 * (*unloadProcPtr)() to unload the file. */
-    Tcl_FSUnloadFileProc **unloadProcPtr;	
+    Tcl_FSUnloadFileProc **unloadProcPtr)
 				/* Filled with address of Tcl_FSUnloadFileProc
-				 * function which should be used for
-				 * this file. */
+				 * function which should be used for this
+				 * file. */
 {
     Tcl_SetResult(interp,
 	    "dynamic loading is not currently available on this system",
@@ -56,21 +55,24 @@ TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr)
  *
  * TclpFindSymbol --
  *
- *	Looks up a symbol, by name, through a handle associated with
- *	a previously loaded piece of code (shared library).
+ *	Looks up a symbol, by name, through a handle associated with a
+ *	previously loaded piece of code (shared library). This version of this
+ *	routine should never be called because the associated TclpDlopen()
+ *	function always returns an error.
  *
  * Results:
- *	Returns a pointer to the function associated with 'symbol' if
- *	it is found.  Otherwise returns NULL and may leave an error
- *	message in the interp's result.
+ *	Returns a pointer to the function associated with 'symbol' if it is
+ *	found. Otherwise returns NULL and may leave an error message in the
+ *	interp's result.
  *
  *----------------------------------------------------------------------
  */
-Tcl_PackageInitProc*
-TclpFindSymbol(interp, loadHandle, symbol) 
-    Tcl_Interp *interp;
-    Tcl_LoadHandle loadHandle;
-    CONST char *symbol;
+
+Tcl_PackageInitProc *
+TclpFindSymbol(
+    Tcl_Interp *interp,
+    Tcl_LoadHandle loadHandle,
+    CONST char *symbol)
 {
     return NULL;
 }
@@ -80,14 +82,14 @@ TclpFindSymbol(interp, loadHandle, symbol)
  *
  * TclGuessPackageName --
  *
- *	If the "load" command is invoked without providing a package
- *	name, this procedure is invoked to try to figure it out.
+ *	If the "load" command is invoked without providing a package name,
+ *	this procedure is invoked to try to figure it out.
  *
  * Results:
- *	Always returns 0 to indicate that we couldn't figure out a
- *	package name;  generic code will then try to guess the package
- *	from the file name.  A return value of 1 would have meant that
- *	we figured out the package name and put it in bufPtr.
+ *	Always returns 0 to indicate that we couldn't figure out a package
+ *	name; generic code will then try to guess the package from the file
+ *	name. A return value of 1 would have meant that we figured out the
+ *	package name and put it in bufPtr.
  *
  * Side effects:
  *	None.
@@ -96,11 +98,11 @@ TclpFindSymbol(interp, loadHandle, symbol)
  */
 
 int
-TclGuessPackageName(fileName, bufPtr)
-    CONST char *fileName;	/* Name of file containing package (already
+TclGuessPackageName(
+    CONST char *fileName,	/* Name of file containing package (already
 				 * translated to local form if needed). */
-    Tcl_DString *bufPtr;	/* Initialized empty dstring.  Append
-				 * package name to this if possible. */
+    Tcl_DString *bufPtr)	/* Initialized empty dstring. Append package
+				 * name to this if possible. */
 {
     return 0;
 }
@@ -110,9 +112,9 @@ TclGuessPackageName(fileName, bufPtr)
  *
  * TclpUnloadFile --
  *
- *    This procedure is called to carry out dynamic unloading of binary
- *    code;  it is intended for use only on systems that don't support
- *    dynamic loading (it does nothing).
+ *    This procedure is called to carry out dynamic unloading of binary code;
+ *    it is intended for use only on systems that don't support dynamic
+ *    loading (it does nothing).
  *
  * Results:
  *    None.
@@ -124,10 +126,50 @@ TclGuessPackageName(fileName, bufPtr)
  */
 
 void
-TclpUnloadFile(loadHandle)
-    Tcl_LoadHandle loadHandle;	/* loadHandle returned by a previous call
-				 * to TclpDlopen().  The loadHandle is 
-				 * a token that represents the loaded 
-				 * file. */
+TclpUnloadFile(
+    Tcl_LoadHandle loadHandle)	/* loadHandle returned by a previous call to
+				 * TclpDlopen(). The loadHandle is a token
+				 * that represents the loaded file. */
+{
+}
+
+/*
+ * These functions are fallbacks if we somehow determine that the platform can
+ * do loading from memory but the user wishes to disable it. They just report
+ * (gracefully) that they fail.
+ */
+
+#ifdef TCL_LOAD_FROM_MEMORY
+
+MODULE_SCOPE void *
+TclpLoadMemoryGetBuffer(
+    Tcl_Interp *interp,		/* Dummy: unused by this implementation */
+    int size)			/* Dummy: unused by this implementation */
+{
+    return NULL;
+}
+
+MODULE_SCOPE int
+TclpLoadMemory(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    void *buffer,		/* Dummy: unused by this implementation */
+    int size,			/* Dummy: unused by this implementation */
+    int codeSize,		/* Dummy: unused by this implementation */
+    Tcl_LoadHandle *loadHandle,	/* Dummy: unused by this implementation */
+    Tcl_FSUnloadFileProc **unloadProcPtr)
+				/* Dummy: unused by this implementation */
 {
+    Tcl_SetResult(interp, "dynamic loading from memory is not available "
+	    "on this system", TCL_STATIC);
+    return TCL_ERROR;
 }
+
+#endif /* TCL_LOAD_FROM_MEMORY */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclMain.c b/generic/tclMain.c
index 28a3dab..7a19a38 100644
--- a/generic/tclMain.c
+++ b/generic/tclMain.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * tclMain.c --
  *
  *	Main program for Tcl shells and other Tcl-based applications.
@@ -7,100 +7,177 @@
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  * Copyright (c) 2000 Ajuba Solutions.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#include "tcl.h"
 #include "tclInt.h"
 
-# undef TCL_STORAGE_CLASS
-# define TCL_STORAGE_CLASS DLLEXPORT
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLEXPORT
 
 /*
- * Declarations for various library procedures and variables (don't want
- * to include tclPort.h here, because people might copy this file out of
- * the Tcl source directory to make their own modified versions).
+ * The default prompt used when the user has not overridden it.
  */
 
-extern int		isatty _ANSI_ARGS_((int fd));
+#define DEFAULT_PRIMARY_PROMPT	"% "
 
-static Tcl_Obj *tclStartupScriptPath = NULL;
+/*
+ * Declarations for various library functions and variables (don't want to
+ * include tclPort.h here, because people might copy this file out of the Tcl
+ * source directory to make their own modified versions).
+ */
+
+extern CRTIMPORT int	isatty(int fd);
 
+static Tcl_Obj *tclStartupScriptPath = NULL;
+static Tcl_Obj *tclStartupScriptEncoding = NULL;
 static Tcl_MainLoopProc *mainLoopProc = NULL;
 
-/* 
- * Structure definition for information used to keep the state of
- * an interactive command processor that reads lines from standard
- * input and writes prompts and results to standard output.
+/*
+ * Structure definition for information used to keep the state of an
+ * interactive command processor that reads lines from standard input and
+ * writes prompts and results to standard output.
  */
 
 typedef enum {
-    PROMPT_NONE,	/* Print no prompt */
-    PROMPT_START,	/* Print prompt for command start */
-    PROMPT_CONTINUE	/* Print prompt for command continuation */
+    PROMPT_NONE,		/* Print no prompt */
+    PROMPT_START,		/* Print prompt for command start */
+    PROMPT_CONTINUE		/* Print prompt for command continuation */
 } PromptType;
 
 typedef struct InteractiveState {
-    Tcl_Channel input;		/* The standard input channel from which
-				 * lines are read. */
-    int tty;                    /* Non-zero means standard input is a 
-				 * terminal-like device.  Zero means it's
-				 * a file. */
-    Tcl_Obj *commandPtr;	/* Used to assemble lines of input into
-				 * Tcl commands. */
+    Tcl_Channel input;		/* The standard input channel from which lines
+				 * are read. */
+    int tty;			/* Non-zero means standard input is a
+				 * terminal-like device. Zero means it's a
+				 * file. */
+    Tcl_Obj *commandPtr;	/* Used to assemble lines of input into Tcl
+				 * commands. */
     PromptType prompt;		/* Next prompt to print */
     Tcl_Interp *interp;		/* Interpreter that evaluates interactive
 				 * commands. */
 } InteractiveState;
 
 /*
- * Forward declarations for procedures defined later in this file.
+ * Forward declarations for functions defined later in this file.
  */
 
-static void		Prompt _ANSI_ARGS_((Tcl_Interp *interp,
-			    PromptType *promptPtr));
-static void		StdinProc _ANSI_ARGS_((ClientData clientData,
-			    int mask));
-
+static void		Prompt(Tcl_Interp *interp, PromptType *promptPtr);
+static void		StdinProc(ClientData clientData, int mask);
 
 /*
  *----------------------------------------------------------------------
  *
- * TclSetStartupScriptPath --
+ * Tcl_SetStartupScript --
  *
- *	Primes the startup script VFS path, used to override the
- *      command line processing.
+ *	Sets the path and encoding of the startup script to be evaluated by
+ *	Tcl_Main, used to override the command line processing.
  *
  * Results:
- *	None. 
+ *	None.
  *
  * Side effects:
- *	This procedure initializes the VFS path of the Tcl script to
- *      run at startup.
  *
  *----------------------------------------------------------------------
  */
-void TclSetStartupScriptPath(pathPtr)
-    Tcl_Obj *pathPtr;
+
+void
+Tcl_SetStartupScript(
+    Tcl_Obj *path,		/* Filesystem path of startup script file */
+    CONST char *encoding)	/* Encoding of the data in that file */
 {
+    Tcl_Obj *newEncoding = NULL;
+    if (encoding != NULL) {
+	newEncoding = Tcl_NewStringObj(encoding, -1);
+    }
+
     if (tclStartupScriptPath != NULL) {
 	Tcl_DecrRefCount(tclStartupScriptPath);
     }
-    tclStartupScriptPath = pathPtr;
+    tclStartupScriptPath = path;
     if (tclStartupScriptPath != NULL) {
 	Tcl_IncrRefCount(tclStartupScriptPath);
     }
+
+    if (tclStartupScriptEncoding != NULL) {
+	Tcl_DecrRefCount(tclStartupScriptEncoding);
+    }
+    tclStartupScriptEncoding = newEncoding;
+    if (tclStartupScriptEncoding != NULL) {
+	Tcl_IncrRefCount(tclStartupScriptEncoding);
+    }
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetStartupScript --
+ *
+ *	Gets the path and encoding of the startup script to be evaluated by
+ *	Tcl_Main.
+ *
+ * Results:
+ *	The path of the startup script; NULL if none has been set.
+ *
+ * Side effects:
+ * 	If encodingPtr is not NULL, stores a (CONST char *) in it pointing to
+ * 	the encoding name registered for the startup script. Tcl retains
+ * 	ownership of the string, and may free it. Caller should make a copy
+ * 	for long-term use.
+ *
+ *----------------------------------------------------------------------
+ */
 
+Tcl_Obj *
+Tcl_GetStartupScript(
+    CONST char **encodingPtr)	/* When not NULL, points to storage for the
+				 * (CONST char *) that points to the
+				 * registered encoding name for the startup
+				 * script */
+{
+    if (encodingPtr != NULL) {
+	if (tclStartupScriptEncoding == NULL) {
+	    *encodingPtr = NULL;
+	} else {
+	    *encodingPtr = Tcl_GetString(tclStartupScriptEncoding);
+	}
+    }
+    return tclStartupScriptPath;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetStartupScriptPath --
+ *
+ *	Primes the startup script VFS path, used to override the command line
+ *	processing.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	This function initializes the VFS path of the Tcl script to run at
+ *	startup.
+ *
+ *----------------------------------------------------------------------
+ */
 
+void
+TclSetStartupScriptPath(
+    Tcl_Obj *path)
+{
+    Tcl_SetStartupScript(path, NULL);
+}
+
 /*
  *----------------------------------------------------------------------
  *
  * TclGetStartupScriptPath --
  *
- *	Gets the startup script VFS path, used to override the
- *      command line processing.
+ *	Gets the startup script VFS path, used to override the command line
+ *	processing.
  *
  * Results:
  *	The startup script VFS path, NULL if none has been set.
@@ -110,44 +187,46 @@ void TclSetStartupScriptPath(pathPtr)
  *
  *----------------------------------------------------------------------
  */
-Tcl_Obj *TclGetStartupScriptPath()
+
+Tcl_Obj *
+TclGetStartupScriptPath(void)
 {
-    return tclStartupScriptPath;
+    return Tcl_GetStartupScript(NULL);
 }
-
-
+
 /*
  *----------------------------------------------------------------------
  *
  * TclSetStartupScriptFileName --
  *
- *	Primes the startup script file name, used to override the
- *      command line processing.
+ *	Primes the startup script file name, used to override the command line
+ *	processing.
  *
  * Results:
- *	None. 
+ *	None.
  *
  * Side effects:
- *	This procedure initializes the file name of the Tcl script to
- *      run at startup.
+ *	This function initializes the file name of the Tcl script to run at
+ *	startup.
  *
  *----------------------------------------------------------------------
  */
-void TclSetStartupScriptFileName(fileName)
-    CONST char *fileName;
+
+void
+TclSetStartupScriptFileName(
+    CONST char *fileName)
 {
-    Tcl_Obj *pathPtr = Tcl_NewStringObj(fileName,-1);
-    TclSetStartupScriptPath(pathPtr);
+    Tcl_Obj *path = Tcl_NewStringObj(fileName,-1);
+    Tcl_SetStartupScript(path, NULL);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * TclGetStartupScriptFileName --
  *
- *	Gets the startup script file name, used to override the
- *      command line processing.
+ *	Gets the startup script file name, used to override the command line
+ *	processing.
  *
  * Results:
  *	The startup script file name, NULL if none has been set.
@@ -157,54 +236,111 @@ void TclSetStartupScriptFileName(fileName)
  *
  *----------------------------------------------------------------------
  */
-CONST char *TclGetStartupScriptFileName()
+
+CONST char *
+TclGetStartupScriptFileName(void)
 {
-    Tcl_Obj *pathPtr = TclGetStartupScriptPath();
+    Tcl_Obj *path = Tcl_GetStartupScript(NULL);
 
-    if (pathPtr == NULL) {
+    if (path == NULL) {
 	return NULL;
     }
-    return Tcl_GetString(pathPtr);
+    return Tcl_GetString(path);
 }
+
+/*----------------------------------------------------------------------
+ *
+ * Tcl_SourceRCFile --
+ *
+ *	This function is typically invoked by Tcl_Main of Tk_Main function to
+ *	source an application specific rc file into the interpreter at startup
+ *	time.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Depends on what's in the rc script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SourceRCFile(
+    Tcl_Interp *interp)		/* Interpreter to source rc file into. */
+{
+    Tcl_DString temp;
+    CONST char *fileName;
+    Tcl_Channel errChannel;
 
+    fileName = Tcl_GetVar(interp, "tcl_rcFileName", TCL_GLOBAL_ONLY);
+    if (fileName != NULL) {
+	Tcl_Channel c;
+	CONST char *fullName;
+
+	Tcl_DStringInit(&temp);
+	fullName = Tcl_TranslateFileName(interp, fileName, &temp);
+	if (fullName == NULL) {
+	    /*
+	     * Couldn't translate the file name (e.g. it referred to a bogus
+	     * user or there was no HOME environment variable). Just do
+	     * nothing.
+	     */
+	} else {
+	    /*
+	     * Test for the existence of the rc file before trying to read it.
+	     */
 
+	    c = Tcl_OpenFileChannel(NULL, fullName, "r", 0);
+	    if (c != (Tcl_Channel) NULL) {
+		Tcl_Close(NULL, c);
+		if (Tcl_EvalFile(interp, fullName) != TCL_OK) {
+		    errChannel = Tcl_GetStdChannel(TCL_STDERR);
+		    if (errChannel) {
+			Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
+			Tcl_WriteChars(errChannel, "\n", 1);
+ 		    }
+ 		}
+ 	    }
+	}
+	Tcl_DStringFree(&temp);
+    }
+}
 
-/*
- *----------------------------------------------------------------------
+/*----------------------------------------------------------------------
  *
  * Tcl_Main --
  *
  *	Main program for tclsh and most other Tcl-based applications.
  *
  * Results:
- *	None. This procedure never returns (it exits the process when
- *	it's done).
+ *	None. This function never returns (it exits the process when it's
+ *	done).
  *
  * Side effects:
- *	This procedure initializes the Tcl world and then starts
- *	interpreting commands;  almost anything could happen, depending
- *	on the script being interpreted.
+ *	This function initializes the Tcl world and then starts interpreting
+ *	commands; almost anything could happen, depending on the script being
+ *	interpreted.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_Main(argc, argv, appInitProc)
-    int argc;			/* Number of arguments. */
-    char **argv;		/* Array of argument strings. */
-    Tcl_AppInitProc *appInitProc;
+Tcl_Main(
+    int argc,			/* Number of arguments. */
+    char **argv,		/* Array of argument strings. */
+    Tcl_AppInitProc *appInitProc)
 				/* Application-specific initialization
-				 * procedure to call after most
-				 * initialization but before starting to
-				 * execute commands. */
+				 * function to call after most initialization
+				 * but before starting to execute commands. */
 {
-    Tcl_Obj *resultPtr, *argvPtr, *commandPtr = NULL;
+    Tcl_Obj *path, *resultPtr, *argvPtr, *commandPtr = NULL;
+    CONST char *encodingName = NULL;
     PromptType prompt = PROMPT_START;
     int code, length, tty, exitCode = 0;
     Tcl_Channel inChannel, outChannel, errChannel;
     Tcl_Interp *interp;
     Tcl_DString appName;
-    Tcl_Obj *objPtr;
 
     Tcl_FindExecutable(argv[0]);
 
@@ -212,35 +348,48 @@ Tcl_Main(argc, argv, appInitProc)
     Tcl_InitMemory(interp);
 
     /*
-     * Make command-line arguments available in the Tcl variables "argc"
-     * and "argv".  If the first argument doesn't start with a "-" then
-     * strip it off and use it as the name of a script file to process.
+     * If the application has not already set a startup script, parse the
+     * first few command line arguments to determine the script path and
+     * encoding.
      */
 
-    if (TclGetStartupScriptPath() == NULL) {
-	if ((argc > 1) && (argv[1][0] != '-')) {
-	    TclSetStartupScriptFileName(argv[1]);
+    if (NULL == Tcl_GetStartupScript(NULL)) {
+
+	/*
+	 * Check whether first 3 args (argv[1] - argv[3]) look like
+	 * 	-encoding ENCODING FILENAME
+	 * or like
+	 * 	FILENAME
+	 */
+
+	if ((argc > 3) && (0 == strcmp("-encoding", argv[1]))
+		&& ('-' != argv[3][0])) {
+	    Tcl_SetStartupScript(Tcl_NewStringObj(argv[3], -1), argv[2]);
+	    argc -= 3;
+	    argv += 3;
+	} else if ((argc > 1) && ('-' != argv[1][0])) {
+	    Tcl_SetStartupScript(Tcl_NewStringObj(argv[1], -1), NULL);
 	    argc--;
 	    argv++;
 	}
     }
 
-    if (TclGetStartupScriptPath() == NULL) {
+    path = Tcl_GetStartupScript(&encodingName);
+    if (path == NULL) {
 	Tcl_ExternalToUtfDString(NULL, argv[0], -1, &appName);
     } else {
-	TclSetStartupScriptFileName(Tcl_ExternalToUtfDString(NULL,
-		TclGetStartupScriptFileName(), -1, &appName));
+	CONST char *pathName = Tcl_GetStringFromObj(path, &length);
+	Tcl_ExternalToUtfDString(NULL, pathName, length, &appName);
+	path = Tcl_NewStringObj(Tcl_DStringValue(&appName), -1);
+	Tcl_SetStartupScript(path, encodingName);
     }
     Tcl_SetVar(interp, "argv0", Tcl_DStringValue(&appName), TCL_GLOBAL_ONLY);
     Tcl_DStringFree(&appName);
     argc--;
     argv++;
 
-    objPtr = Tcl_NewIntObj(argc);
-    Tcl_IncrRefCount(objPtr);
-    Tcl_SetVar2Ex(interp, "argc", NULL, objPtr, TCL_GLOBAL_ONLY);
-    Tcl_DecrRefCount(objPtr);
-    
+    Tcl_SetVar2Ex(interp, "argc", NULL, Tcl_NewIntObj(argc), TCL_GLOBAL_ONLY);
+
     argvPtr = Tcl_NewListObj(0, NULL);
     while (argc--) {
 	Tcl_DString ds;
@@ -249,19 +398,16 @@ Tcl_Main(argc, argv, appInitProc)
 		Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)));
 	Tcl_DStringFree(&ds);
     }
-    Tcl_IncrRefCount(argvPtr);
     Tcl_SetVar2Ex(interp, "argv", NULL, argvPtr, TCL_GLOBAL_ONLY);
-    Tcl_DecrRefCount(argvPtr);
 
     /*
      * Set the "tcl_interactive" variable.
      */
 
     tty = isatty(0);
-    Tcl_SetVar(interp, "tcl_interactive",
-	    ((TclGetStartupScriptPath() == NULL) && tty) ? "1" : "0",
+    Tcl_SetVar(interp, "tcl_interactive", ((path == NULL) && tty) ? "1" : "0",
 	    TCL_GLOBAL_ONLY);
-    
+
     /*
      * Invoke application-specific initialization.
      */
@@ -279,27 +425,34 @@ Tcl_Main(argc, argv, appInitProc)
     if (Tcl_InterpDeleted(interp)) {
 	goto done;
     }
+    if (Tcl_LimitExceeded(interp)) {
+	goto done;
+    }
 
     /*
-     * If a script file was specified then just source that file
-     * and quit.
+     * If a script file was specified then just source that file and quit.
+     * Must fetch it again, as the appInitProc might have reset it.
      */
 
-    if (TclGetStartupScriptPath() != NULL) {
-	code = Tcl_FSEvalFile(interp, TclGetStartupScriptPath());
+    path = Tcl_GetStartupScript(&encodingName);
+    if (path != NULL) {
+	code = Tcl_FSEvalFileEx(interp, path, encodingName);
 	if (code != TCL_OK) {
 	    errChannel = Tcl_GetStdChannel(TCL_STDERR);
 	    if (errChannel) {
+		Tcl_Obj *options = Tcl_GetReturnOptions(interp, code);
+		Tcl_Obj *keyPtr, *valuePtr;
 
-		/*
-		 * The following statement guarantees that the errorInfo
-		 * variable is set properly.
-		 */
+		TclNewLiteralStringObj(keyPtr, "-errorinfo");
+		Tcl_IncrRefCount(keyPtr);
+		Tcl_DictObjGet(NULL, options, keyPtr, &valuePtr);
+		Tcl_DecrRefCount(keyPtr);
 
-		Tcl_AddErrorInfo(interp, "");
-		Tcl_WriteObj(errChannel, Tcl_GetVar2Ex(interp, "errorInfo",
-			NULL, TCL_GLOBAL_ONLY));
+		if (valuePtr) {
+		    Tcl_WriteObj(errChannel, valuePtr);
+		}
 		Tcl_WriteChars(errChannel, "\n", 1);
+		Tcl_DecrRefCount(options);
 	    }
 	    exitCode = 1;
 	}
@@ -307,16 +460,19 @@ Tcl_Main(argc, argv, appInitProc)
     }
 
     /*
-     * We're running interactively.  Source a user-specific startup
-     * file if the application specified one and if the file exists.
+     * We're running interactively. Source a user-specific startup file if the
+     * application specified one and if the file exists.
      */
 
     Tcl_SourceRCFile(interp);
+    if (Tcl_LimitExceeded(interp)) {
+	goto done;
+    }
 
     /*
-     * Process commands from stdin until there's an end-of-file.  Note
-     * that we need to fetch the standard channels again after every
-     * eval, since they may have been changed.
+     * Process commands from stdin until there's an end-of-file. Note that we
+     * need to fetch the standard channels again after every eval, since they
+     * may have been changed.
      */
 
     commandPtr = Tcl_NewObj();
@@ -325,6 +481,7 @@ Tcl_Main(argc, argv, appInitProc)
     /*
      * Get a new value for tty if anyone writes to ::tcl_interactive
      */
+
     Tcl_LinkVar(interp, "tcl_interactive", (char *) &tty, TCL_LINK_BOOLEAN);
     inChannel = Tcl_GetStdChannel(TCL_STDIN);
     outChannel = Tcl_GetStdChannel(TCL_STDOUT);
@@ -335,9 +492,12 @@ Tcl_Main(argc, argv, appInitProc)
 		if (Tcl_InterpDeleted(interp)) {
 		    break;
 		}
+		if (Tcl_LimitExceeded(interp)) {
+		    break;
+		}
 		inChannel = Tcl_GetStdChannel(TCL_STDIN);
 		if (inChannel == (Tcl_Channel) NULL) {
-	            break;
+		    break;
 		}
 	    }
 	    if (Tcl_IsShared(commandPtr)) {
@@ -345,32 +505,32 @@ Tcl_Main(argc, argv, appInitProc)
 		commandPtr = Tcl_DuplicateObj(commandPtr);
 		Tcl_IncrRefCount(commandPtr);
 	    }
-            length = Tcl_GetsObj(inChannel, commandPtr);
+	    length = Tcl_GetsObj(inChannel, commandPtr);
 	    if (length < 0) {
 		if (Tcl_InputBlocked(inChannel)) {
-
 		    /*
 		     * This can only happen if stdin has been set to
-		     * non-blocking.  In that case cycle back and try
-		     * again.  This sets up a tight polling loop (since
-		     * we have no event loop running).  If this causes
-		     * bad CPU hogging, we might try toggling the blocking
-		     * on stdin instead.
+		     * non-blocking.  In that case cycle back and try again.
+		     * This sets up a tight polling loop (since we have no
+		     * event loop running). If this causes bad CPU hogging,
+		     * we might try toggling the blocking on stdin instead.
 		     */
 
 		    continue;
 		}
 
-		/* 
+		/*
 		 * Either EOF, or an error on stdin; we're done
 		 */
 
 		break;
 	    }
 
-            /*
-             * Add the newline removed by Tcl_GetsObj back to the string.
-             */
+	    /*
+	     * Add the newline removed by Tcl_GetsObj back to the string.
+	     * Have to add it back before testing completeness, because
+	     * it can make a difference.  [Bug 1775878].
+	     */
 
 	    if (Tcl_IsShared(commandPtr)) {
 		Tcl_DecrRefCount(commandPtr);
@@ -384,6 +544,12 @@ Tcl_Main(argc, argv, appInitProc)
 	    }
 
 	    prompt = PROMPT_START;
+	    /*
+	     * The final newline is syntactically redundant, and causes
+	     * some error messages troubles deeper in, so lop it back off.
+	     */
+	    Tcl_GetStringFromObj(commandPtr, &length);
+	    Tcl_SetObjLength(commandPtr, --length);
 	    code = Tcl_RecordAndEvalObj(interp, commandPtr, TCL_EVAL_GLOBAL);
 	    inChannel = Tcl_GetStdChannel(TCL_STDIN);
 	    outChannel = Tcl_GetStdChannel(TCL_STDOUT);
@@ -396,7 +562,7 @@ Tcl_Main(argc, argv, appInitProc)
 		    Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
 		    Tcl_WriteChars(errChannel, "\n", 1);
 		}
-	    } else if (tty) {
+ 	    } else if (tty) {
 		resultPtr = Tcl_GetObjResult(interp);
 		Tcl_IncrRefCount(resultPtr);
 		Tcl_GetStringFromObj(resultPtr, &length);
@@ -408,18 +574,18 @@ Tcl_Main(argc, argv, appInitProc)
 	    }
 	} else {	/* (mainLoopProc != NULL) */
 	    /*
-	     * If a main loop has been defined while running interactively,
-	     * we want to start a fileevent based prompt by establishing a
+	     * If a main loop has been defined while running interactively, we
+	     * want to start a fileevent based prompt by establishing a
 	     * channel handler for stdin.
 	     */
 
 	    InteractiveState *isPtr = NULL;
 
 	    if (inChannel) {
-	        if (tty) {
+		if (tty) {
 		    Prompt(interp, &prompt);
-	        }
-		isPtr = (InteractiveState *) 
+		}
+		isPtr = (InteractiveState *)
 			ckalloc((int) sizeof(InteractiveState));
 		isPtr->input = inChannel;
 		isPtr->tty = tty;
@@ -458,8 +624,8 @@ Tcl_Main(argc, argv, appInitProc)
 #ifdef TCL_MEM_DEBUG
 
 	/*
-	 * This code here only for the (unsupported and deprecated)
-	 * [checkmem] command.
+	 * This code here only for the (unsupported and deprecated) [checkmem]
+	 * command.
 	 */
 
 	if (tclMemDumpFileName != NULL) {
@@ -469,13 +635,13 @@ Tcl_Main(argc, argv, appInitProc)
 #endif
     }
 
-    done:
-    if ((exitCode == 0) && (mainLoopProc != NULL)) {
-
+  done:
+    if ((exitCode == 0) && (mainLoopProc != NULL)
+	    && !Tcl_LimitExceeded(interp)) {
 	/*
-	 * If everything has gone OK so far, call the main loop proc,
-	 * if it exists.  Packages (like Tk) can set it to start processing
-	 * events at this point.
+	 * If everything has gone OK so far, call the main loop proc, if it
+	 * exists. Packages (like Tk) can set it to start processing events at
+	 * this point.
 	 */
 
 	(*mainLoopProc)();
@@ -486,32 +652,35 @@ Tcl_Main(argc, argv, appInitProc)
     }
 
     /*
-     * Rather than calling exit, invoke the "exit" command so that
-     * users can replace "exit" with some other command to do additional
-     * cleanup on exit.  The Tcl_Eval call should never return.
+     * Rather than calling exit, invoke the "exit" command so that users can
+     * replace "exit" with some other command to do additional cleanup on
+     * exit. The Tcl_EvalObjEx call should never return.
      */
 
     if (!Tcl_InterpDeleted(interp)) {
-	char buffer[TCL_INTEGER_SPACE + 5];
-        sprintf(buffer, "exit %d", exitCode);
-        Tcl_Eval(interp, buffer);
-
-        /*
-         * If Tcl_Eval returns, trying to eval [exit], something
-         * unusual is happening.  Maybe interp has been deleted;
-         * maybe [exit] was redefined.  We still want to cleanup
-         * and exit.
-         */
-
-        if (!Tcl_InterpDeleted(interp)) {
-            Tcl_DeleteInterp(interp);
-        }
+	if (!Tcl_LimitExceeded(interp)) {
+	    Tcl_Obj *cmd = Tcl_ObjPrintf("exit %d", exitCode);
+	    Tcl_IncrRefCount(cmd);
+	    Tcl_EvalObjEx(interp, cmd, TCL_EVAL_GLOBAL);
+	    Tcl_DecrRefCount(cmd);
+	}
+
+	/*
+	 * If Tcl_EvalObjEx returns, trying to eval [exit], something unusual
+	 * is happening. Maybe interp has been deleted; maybe [exit] was
+	 * redefined, maybe we've blown up because of an exceeded limit. We
+	 * still want to cleanup and exit.
+	 */
+
+	if (!Tcl_InterpDeleted(interp)) {
+	    Tcl_DeleteInterp(interp);
+	}
     }
-    TclSetStartupScriptPath(NULL);
+    Tcl_SetStartupScript(NULL, NULL);
 
     /*
-     * If we get here, the master interp has been deleted.  Allow
-     * its destruction with the last matching Tcl_Release.
+     * If we get here, the master interp has been deleted. Allow its
+     * destruction with the last matching Tcl_Release.
      */
 
     Tcl_Release((ClientData) interp);
@@ -523,21 +692,21 @@ Tcl_Main(argc, argv, appInitProc)
  *
  * Tcl_SetMainLoop --
  *
- *	Sets an alternative main loop procedure.
+ *	Sets an alternative main loop function.
  *
  * Results:
- *	Returns the previously defined main loop procedure.
+ *	Returns the previously defined main loop function.
  *
  * Side effects:
- *	This procedure will be called before Tcl exits, allowing for
- *	the creation of an event loop.
+ *	This function will be called before Tcl exits, allowing for the
+ *	creation of an event loop.
  *
  *---------------------------------------------------------------
  */
 
 void
-Tcl_SetMainLoop(proc)
-    Tcl_MainLoopProc *proc;
+Tcl_SetMainLoop(
+    Tcl_MainLoopProc *proc)
 {
     mainLoopProc = proc;
 }
@@ -547,26 +716,25 @@ Tcl_SetMainLoop(proc)
  *
  * StdinProc --
  *
- *	This procedure is invoked by the event dispatcher whenever
- *	standard input becomes readable.  It grabs the next line of
- *	input characters, adds them to a command being assembled, and
- *	executes the command if it's complete.
+ *	This function is invoked by the event dispatcher whenever standard
+ *	input becomes readable. It grabs the next line of input characters,
+ *	adds them to a command being assembled, and executes the command if
+ *	it's complete.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Could be almost arbitrary, depending on the command that's
- *	typed.
+ *	Could be almost arbitrary, depending on the command that's typed.
  *
  *----------------------------------------------------------------------
  */
 
     /* ARGSUSED */
 static void
-StdinProc(clientData, mask)
-    ClientData clientData;		/* The state of interactive cmd line */
-    int mask;				/* Not used. */
+StdinProc(
+    ClientData clientData,	/* The state of interactive cmd line */
+    int mask)			/* Not used. */
 {
     InteractiveState *isPtr = (InteractiveState *) clientData;
     Tcl_Channel chan = isPtr->input;
@@ -586,10 +754,11 @@ StdinProc(clientData, mask)
 	}
 	if (isPtr->tty) {
 	    /*
-	     * Would be better to find a way to exit the mainLoop?
-	     * Or perhaps evaluate [exit]?  Leaving as is for now due
-	     * to compatibility concerns.
+	     * Would be better to find a way to exit the mainLoop? Or perhaps
+	     * evaluate [exit]? Leaving as is for now due to compatibility
+	     * concerns.
 	     */
+
 	    Tcl_Exit(0);
 	}
 	Tcl_DeleteChannelHandler(chan, StdinProc, (ClientData) isPtr);
@@ -603,17 +772,18 @@ StdinProc(clientData, mask)
     }
     Tcl_AppendToObj(commandPtr, "\n", 1);
     if (!TclObjCommandComplete(commandPtr)) {
-        isPtr->prompt = PROMPT_CONTINUE;
-        goto prompt;
+	isPtr->prompt = PROMPT_CONTINUE;
+	goto prompt;
     }
     isPtr->prompt = PROMPT_START;
+    Tcl_GetStringFromObj(commandPtr, &length);
+    Tcl_SetObjLength(commandPtr, --length);
 
     /*
      * Disable the stdin channel handler while evaluating the command;
-     * otherwise if the command re-enters the event loop we might
-     * process commands from stdin before the current command is
-     * finished.  Among other things, this will trash the text of the
-     * command being evaluated.
+     * otherwise if the command re-enters the event loop we might process
+     * commands from stdin before the current command is finished. Among other
+     * things, this will trash the text of the command being evaluated.
      */
 
     Tcl_CreateChannelHandler(chan, 0, StdinProc, (ClientData) isPtr);
@@ -648,7 +818,7 @@ StdinProc(clientData, mask)
      * If a tty stdin is still around, output a prompt.
      */
 
-    prompt:
+  prompt:
     if (isPtr->tty && (isPtr->input != (Tcl_Channel) NULL)) {
 	Prompt(interp, &(isPtr->prompt));
 	isPtr->input = Tcl_GetStdChannel(TCL_STDIN);
@@ -660,25 +830,24 @@ StdinProc(clientData, mask)
  *
  * Prompt --
  *
- *	Issue a prompt on standard output, or invoke a script
- *	to issue the prompt.
+ *	Issue a prompt on standard output, or invoke a script to issue the
+ *	prompt.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	A prompt gets output, and a Tcl script may be evaluated
- *	in interp.
+ *	A prompt gets output, and a Tcl script may be evaluated in interp.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-Prompt(interp, promptPtr)
-    Tcl_Interp *interp;			/* Interpreter to use for prompting. */
-    PromptType *promptPtr;		/* Points to type of prompt to print.
-					 * Filled with PROMPT_NONE after a
-					 * prompt is printed. */
+Prompt(
+    Tcl_Interp *interp,		/* Interpreter to use for prompting. */
+    PromptType *promptPtr)	/* Points to type of prompt to print. Filled
+				 * with PROMPT_NONE after a prompt is
+				 * printed. */
 {
     Tcl_Obj *promptCmdPtr;
     int code;
@@ -691,15 +860,17 @@ Prompt(interp, promptPtr)
     promptCmdPtr = Tcl_GetVar2Ex(interp,
 	    ((*promptPtr == PROMPT_CONTINUE) ? "tcl_prompt2" : "tcl_prompt1"),
 	    NULL, TCL_GLOBAL_ONLY);
+
     if (Tcl_InterpDeleted(interp)) {
 	return;
     }
     if (promptCmdPtr == NULL) {
-	defaultPrompt:
+    defaultPrompt:
 	outChannel = Tcl_GetStdChannel(TCL_STDOUT);
 	if ((*promptPtr == PROMPT_START)
 		&& (outChannel != (Tcl_Channel) NULL)) {
-	    Tcl_WriteChars(outChannel, "% ", 2);
+	    Tcl_WriteChars(outChannel, DEFAULT_PRIMARY_PROMPT,
+		    strlen(DEFAULT_PRIMARY_PROMPT));
 	}
     } else {
 	code = Tcl_EvalObjEx(interp, promptCmdPtr, TCL_EVAL_GLOBAL);
@@ -707,16 +878,25 @@ Prompt(interp, promptPtr)
 	    Tcl_AddErrorInfo(interp,
 		    "\n    (script that generates prompt)");
 	    errChannel = Tcl_GetStdChannel(TCL_STDERR);
-            if (errChannel != (Tcl_Channel) NULL) {
-                Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
-                Tcl_WriteChars(errChannel, "\n", 1);
-            }
+	    if (errChannel != (Tcl_Channel) NULL) {
+		Tcl_WriteObj(errChannel, Tcl_GetObjResult(interp));
+		Tcl_WriteChars(errChannel, "\n", 1);
+	    }
 	    goto defaultPrompt;
 	}
     }
+
     outChannel = Tcl_GetStdChannel(TCL_STDOUT);
     if (outChannel != (Tcl_Channel) NULL) {
 	Tcl_Flush(outChannel);
     }
     *promptPtr = PROMPT_NONE;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclMath.h b/generic/tclMath.h
deleted file mode 100644
index 0f02855..0000000
--- a/generic/tclMath.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * tclMath.h --
- *
- *	This file is necessary because of Metrowerks CodeWarrior Pro 1
- *	on the Macintosh. With 8-byte doubles turned on, the definitions of
- *	sin, cos, acos, etc., are screwed up.  They are fine as long as
- *	they are used as function calls, but if the function pointers
- *	are passed around and used, they will crash hard on the 68K.
- *
- * Copyright (c) 1997 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#ifndef _TCLMATH
-#define _TCLMATH
-
-#include <math.h>
-
-#endif /* _TCLMATH */
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c
index be7c4cd..d2decb9 100644
--- a/generic/tclNamesp.c
+++ b/generic/tclNamesp.c
@@ -1,164 +1,264 @@
 /*
  * tclNamesp.c --
  *
- *      Contains support for namespaces, which provide a separate context of
- *      commands and global variables. The global :: namespace is the
- *      traditional Tcl "global" scope. Other namespaces are created as
- *      children of the global namespace. These other namespaces contain
- *      special-purpose commands and variables for packages.
+ *	Contains support for namespaces, which provide a separate context of
+ *	commands and global variables. The global :: namespace is the
+ *	traditional Tcl "global" scope. Other namespaces are created as
+ *	children of the global namespace. These other namespaces contain
+ *	special-purpose commands and variables for packages. Also includes the
+ *	TIP#112 ensemble machinery.
  *
  * Copyright (c) 1993-1997 Lucent Technologies.
  * Copyright (c) 1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
+ * Copyright (c) 2002-2005 Donal K. Fellows.
+ * Copyright (c) 2006 Neil Madden.
+ * Contributions from Don Porter, NIST, 2007. (not subject to US copyright)
  *
  * Originally implemented by
  *   Michael J. McLennan
  *   Bell Labs Innovations for Lucent Technologies
  *   mmclennan@lucent.com
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * Flag passed to TclGetNamespaceForQualName to indicate that it should
- * search for a namespace rather than a command or variable inside a
- * namespace. Note that this flag's value must not conflict with the values
- * of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY, or CREATE_NS_IF_UNKNOWN.
+ * Thread-local storage used to avoid having a global lock on data that is not
+ * limited to a single interpreter.
  */
 
-#define FIND_ONLY_NS	0x1000
+typedef struct ThreadSpecificData {
+    long numNsCreated;		/* Count of the number of namespaces created
+				 * within the thread. This value is used as a
+				 * unique id for each namespace. Cannot be
+				 * per-interp because the nsId is used to
+				 * distinguish objects which can be passed
+				 * around between interps in the same thread,
+				 * but does not need to be global because
+				 * object internal reps are always per-thread
+				 * anyway. */
+} ThreadSpecificData;
+
+static Tcl_ThreadDataKey dataKey;
 
 /*
- * Initial size of stack allocated space for tail list - used when resetting
- * shadowed command references in the functin: TclResetShadowedCmdRefs.
+ * This structure contains a cached pointer to a namespace that is the result
+ * of resolving the namespace's name in some other namespace. It is the
+ * internal representation for a nsName object. It contains the pointer along
+ * with some information that is used to check the cached pointer's validity.
  */
 
-#define NUM_TRAIL_ELEMS 5
+typedef struct ResolvedNsName {
+    Namespace *nsPtr;          /* A cached pointer to the Namespace that the
+                                * name resolved to. */
+    Namespace *refNsPtr;       /* Points to the namespace context in which the
+                                * name was resolved. NULL if the name is fully
+                                * qualified and thus the resolution does not
+                                * depend on the context. */
+    int refCount;		/* Reference count: 1 for each nsName object
+				 * that has a pointer to this ResolvedNsName
+				 * structure as its internal rep. This
+				 * structure can be freed when refCount
+				 * becomes zero. */
+} ResolvedNsName;
 
 /*
- * Count of the number of namespaces created. This value is used as a
- * unique id for each namespace.
+ * The client data for an ensemble command. This consists of the table of
+ * commands that are actually exported by the namespace, and an epoch counter
+ * that, combined with the exportLookupEpoch field of the namespace structure,
+ * defines whether the table contains valid data or will need to be recomputed
+ * next time the ensemble command is called.
  */
 
-static long numNsCreated = 0; 
-TCL_DECLARE_MUTEX(nsMutex)
+typedef struct EnsembleConfig {
+    Namespace *nsPtr;		/* The namspace backing this ensemble up. */
+    Tcl_Command token;		/* The token for the command that provides
+				 * ensemble support for the namespace, or NULL
+				 * if the command has been deleted (or never
+				 * existed; the global namespace never has an
+				 * ensemble command.) */
+    int epoch;			/* The epoch at which this ensemble's table of
+				 * exported commands is valid. */
+    char **subcommandArrayPtr;	/* Array of ensemble subcommand names. At all
+				 * consistent points, this will have the same
+				 * number of entries as there are entries in
+				 * the subcommandTable hash. */
+    Tcl_HashTable subcommandTable;
+				/* Hash table of ensemble subcommand names,
+				 * which are its keys so this also provides
+				 * the storage management for those subcommand
+				 * names. The contents of the entry values are
+				 * object version the prefix lists to use when
+				 * substituting for the command/subcommand to
+				 * build the ensemble implementation command.
+				 * Has to be stored here as well as in
+				 * subcommandDict because that field is NULL
+				 * when we are deriving the ensemble from the
+				 * namespace exports list. FUTURE WORK: use
+				 * object hash table here. */
+    struct EnsembleConfig *next;/* The next ensemble in the linked list of
+				 * ensembles associated with a namespace. If
+				 * this field points to this ensemble, the
+				 * structure has already been unlinked from
+				 * all lists, and cannot be found by scanning
+				 * the list from the namespace's ensemble
+				 * field. */
+    int flags;			/* ORed combo of TCL_ENSEMBLE_PREFIX, ENS_DEAD
+				 * and ENSEMBLE_COMPILE. */
+
+    /* OBJECT FIELDS FOR ENSEMBLE CONFIGURATION */
+
+    Tcl_Obj *subcommandDict;	/* Dictionary providing mapping from
+				 * subcommands to their implementing command
+				 * prefixes, or NULL if we are to build the
+				 * map automatically from the namespace
+				 * exports. */
+    Tcl_Obj *subcmdList;	/* List of commands that this ensemble
+				 * actually provides, and whose implementation
+				 * will be built using the subcommandDict (if
+				 * present and defined) and by simple mapping
+				 * to the namespace otherwise. If NULL,
+				 * indicates that we are using the (dynamic)
+				 * list of currently exported commands. */
+    Tcl_Obj *unknownHandler;	/* Script prefix used to handle the case when
+				 * no match is found (according to the rule
+				 * defined by flag bit TCL_ENSEMBLE_PREFIX) or
+				 * NULL to use the default error-generating
+				 * behaviour. The script execution gets all
+				 * the arguments to the ensemble command
+				 * (including objv[0]) and will have the
+				 * results passed directly back to the caller
+				 * (including the error code) unless the code
+				 * is TCL_CONTINUE in which case the
+				 * subcommand will be reparsed by the ensemble
+				 * core, presumably because the ensemble
+				 * itself has been updated. */
+} EnsembleConfig;
+
+#define ENS_DEAD	0x1	/* Flag value to say that the ensemble is dead
+				 * and on its way out. */
 
 /*
- * This structure contains a cached pointer to a namespace that is the
- * result of resolving the namespace's name in some other namespace. It is
- * the internal representation for a nsName object. It contains the
- * pointer along with some information that is used to check the cached
- * pointer's validity.
+ * Declarations for functions local to this file:
  */
 
-typedef struct ResolvedNsName {
-    Namespace *nsPtr;		/* A cached namespace pointer. */
-    long nsId;			/* nsPtr's unique namespace id. Used to
-				 * verify that nsPtr is still valid
-				 * (e.g., it's possible that the namespace
-				 * was deleted and a new one created at
-				 * the same address). */
-    Namespace *refNsPtr;	/* Points to the namespace containing the
-				 * reference (not the namespace that
-				 * contains the referenced namespace). */
-    int refCount;		/* Reference count: 1 for each nsName
-				 * object that has a pointer to this
-				 * ResolvedNsName structure as its internal
-				 * rep. This structure can be freed when
-				 * refCount becomes zero. */
-} ResolvedNsName;
+static void		DeleteImportedCmd(ClientData clientData);
+static int		DoImport(Tcl_Interp *interp,
+			    Namespace *nsPtr, Tcl_HashEntry *hPtr,
+			    const char *cmdName, const char *pattern,
+			    Namespace *importNsPtr, int allowOverwrite);
+static void		DupNsNameInternalRep(Tcl_Obj *objPtr,Tcl_Obj *copyPtr);
+static char *		ErrorCodeRead(ClientData clientData,Tcl_Interp *interp,
+			    const char *name1, const char *name2, int flags);
+static char *		ErrorInfoRead(ClientData clientData,Tcl_Interp *interp,
+			    const char *name1, const char *name2, int flags);
+static char *		EstablishErrorCodeTraces(ClientData clientData,
+			    Tcl_Interp *interp, const char *name1,
+			    const char *name2, int flags);
+static char *		EstablishErrorInfoTraces(ClientData clientData,
+			    Tcl_Interp *interp, const char *name1,
+			    const char *name2, int flags);
+static void		FreeNsNameInternalRep(Tcl_Obj *objPtr);
+static int		GetNamespaceFromObj(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr, Tcl_Namespace **nsPtrPtr);
+static int		InvokeImportedCmd(ClientData clientData,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static int		NamespaceChildrenCmd(ClientData dummy,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static int		NamespaceCodeCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceCurrentCmd(ClientData dummy,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static int		NamespaceDeleteCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceEnsembleCmd(ClientData dummy,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static int		NamespaceEvalCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceExistsCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceExportCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceForgetCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static void		NamespaceFree(Namespace *nsPtr);
+static int		NamespaceImportCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceInscopeCmd(ClientData dummy,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static int		NamespaceOriginCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceParentCmd(ClientData dummy,Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespacePathCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceQualifiersCmd(ClientData dummy,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static int		NamespaceTailCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceUpvarCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		NamespaceUnknownCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		NamespaceWhichCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		SetNsNameFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static int		NsEnsembleImplementationCmd(ClientData clientData,
+			    Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]);
+static void		BuildEnsembleConfig(EnsembleConfig *ensemblePtr);
+static int		NsEnsembleStringOrder(const void *strPtr1,
+			    const void *strPtr2);
+static void		DeleteEnsembleConfig(ClientData clientData);
+static void		MakeCachedEnsembleCommand(Tcl_Obj *objPtr,
+			    EnsembleConfig *ensemblePtr,
+			    const char *subcmdName, Tcl_Obj *prefixObjPtr);
+static void		FreeEnsembleCmdRep(Tcl_Obj *objPtr);
+static void		DupEnsembleCmdRep(Tcl_Obj *objPtr, Tcl_Obj *copyPtr);
+static void		StringOfEnsembleCmdRep(Tcl_Obj *objPtr);
+static void		UnlinkNsPath(Namespace *nsPtr);
 
 /*
- * Declarations for procedures local to this file:
- */
-
-static void		DeleteImportedCmd _ANSI_ARGS_((
-			    ClientData clientData));
-static void		DupNsNameInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr,
-			    Tcl_Obj *copyPtr));
-static void		FreeNsNameInternalRep _ANSI_ARGS_((
-			    Tcl_Obj *objPtr));
-static int		GetNamespaceFromObj _ANSI_ARGS_((
-			    Tcl_Interp *interp, Tcl_Obj *objPtr,
-			    Tcl_Namespace **nsPtrPtr));
-static int		InvokeImportedCmd _ANSI_ARGS_((
-			    ClientData clientData, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceChildrenCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceCodeCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceCurrentCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceDeleteCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceEvalCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceExistsCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceExportCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceForgetCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static void		NamespaceFree _ANSI_ARGS_((Namespace *nsPtr));
-static int		NamespaceImportCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceInscopeCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceOriginCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceParentCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceQualifiersCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceTailCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		NamespaceWhichCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		SetNsNameFromAny _ANSI_ARGS_((
-			    Tcl_Interp *interp, Tcl_Obj *objPtr));
-static void		UpdateStringOfNsName _ANSI_ARGS_((Tcl_Obj *objPtr));
-
-/*
- * This structure defines a Tcl object type that contains a
- * namespace reference.  It is used in commands that take the
- * name of a namespace as an argument.  The namespace reference
- * is resolved, and the result in cached in the object.
- */
-
-Tcl_ObjType tclNsNameType = {
+ * This structure defines a Tcl object type that contains a namespace
+ * reference. It is used in commands that take the name of a namespace as an
+ * argument. The namespace reference is resolved, and the result in cached in
+ * the object.
+ */
+
+static Tcl_ObjType nsNameType = {
     "nsName",			/* the type's name */
     FreeNsNameInternalRep,	/* freeIntRepProc */
     DupNsNameInternalRep,	/* dupIntRepProc */
-    UpdateStringOfNsName,	/* updateStringProc */
+    NULL,			/* updateStringProc */
     SetNsNameFromAny		/* setFromAnyProc */
 };
+
+/*
+ * This structure defines a Tcl object type that contains a reference to an
+ * ensemble subcommand (e.g. the "length" in [string length ab]). It is used
+ * to cache the mapping between the subcommand itself and the real command
+ * that implements it.
+ */
+
+Tcl_ObjType tclEnsembleCmdType = {
+    "ensembleCommand",		/* the type's name */
+    FreeEnsembleCmdRep,		/* freeIntRepProc */
+    DupEnsembleCmdRep,		/* dupIntRepProc */
+    StringOfEnsembleCmdRep,	/* updateStringProc */
+    NULL			/* setFromAnyProc */
+};
 
 /*
  *----------------------------------------------------------------------
  *
  * TclInitNamespaceSubsystem --
  *
- *	This procedure is called to initialize all the structures that 
- *	are used by namespaces on a per-process basis.
+ *	This function is called to initialize all the structures that are used
+ *	by namespaces on a per-process basis.
  *
  * Results:
  *	None.
@@ -170,7 +270,7 @@ Tcl_ObjType tclNsNameType = {
  */
 
 void
-TclInitNamespaceSubsystem()
+TclInitNamespaceSubsystem(void)
 {
     /*
      * Does nothing for now.
@@ -194,19 +294,11 @@ TclInitNamespaceSubsystem()
  */
 
 Tcl_Namespace *
-Tcl_GetCurrentNamespace(interp)
-    register Tcl_Interp *interp; /* Interpreter whose current namespace is
-				  * being queried. */
+Tcl_GetCurrentNamespace(
+    register Tcl_Interp *interp)/* Interpreter whose current namespace is
+				 * being queried. */
 {
-    register Interp *iPtr = (Interp *) interp;
-    register Namespace *nsPtr;
-
-    if (iPtr->varFramePtr != NULL) {
-        nsPtr = iPtr->varFramePtr->nsPtr;
-    } else {
-        nsPtr = iPtr->globalNsPtr;
-    }
-    return (Tcl_Namespace *) nsPtr;
+    return TclGetCurrentNamespace(interp);
 }
 
 /*
@@ -226,13 +318,11 @@ Tcl_GetCurrentNamespace(interp)
  */
 
 Tcl_Namespace *
-Tcl_GetGlobalNamespace(interp)
-    register Tcl_Interp *interp; /* Interpreter whose global namespace 
-				  * should be returned. */
+Tcl_GetGlobalNamespace(
+    register Tcl_Interp *interp)/* Interpreter whose global namespace should
+				 * be returned. */
 {
-    register Interp *iPtr = (Interp *) interp;
-    
-    return (Tcl_Namespace *) iPtr->globalNsPtr;
+    return TclGetGlobalNamespace(interp);
 }
 
 /*
@@ -240,9 +330,9 @@ Tcl_GetGlobalNamespace(interp)
  *
  * Tcl_PushCallFrame --
  *
- *	Pushes a new call frame onto the interpreter's Tcl call stack.
- *	Called when executing a Tcl procedure or a "namespace eval" or
- *	"namespace inscope" command. 
+ *	Pushes a new call frame onto the interpreter's Tcl call stack. Called
+ *	when executing a Tcl procedure or a "namespace eval" or "namespace
+ *	inscope" command.
  *
  * Results:
  *	Returns TCL_OK if successful, or TCL_ERROR (along with an error
@@ -255,45 +345,53 @@ Tcl_GetGlobalNamespace(interp)
  */
 
 int
-Tcl_PushCallFrame(interp, callFramePtr, namespacePtr, isProcCallFrame)
-    Tcl_Interp *interp;		 /* Interpreter in which the new call frame
-				  * is to be pushed. */
-    Tcl_CallFrame *callFramePtr; /* Points to a call frame structure to
-				  * push. Storage for this has already been
-				  * allocated by the caller; typically this
-				  * is the address of a CallFrame structure
-				  * allocated on the caller's C stack.  The
-				  * call frame will be initialized by this
-				  * procedure. The caller can pop the frame
-				  * later with Tcl_PopCallFrame, and it is
-				  * responsible for freeing the frame's
-				  * storage. */
-    Tcl_Namespace *namespacePtr; /* Points to the namespace in which the
-				  * frame will execute. If NULL, the
-				  * interpreter's current namespace will
-				  * be used. */
-    int isProcCallFrame;	 /* If nonzero, the frame represents a
-				  * called Tcl procedure and may have local
-				  * vars. Vars will ordinarily be looked up
-				  * in the frame. If new variables are
-				  * created, they will be created in the
-				  * frame. If 0, the frame is for a
-				  * "namespace eval" or "namespace inscope"
-				  * command and var references are treated
-				  * as references to namespace variables. */
+Tcl_PushCallFrame(
+    Tcl_Interp *interp,		/* Interpreter in which the new call frame is
+				 * to be pushed. */
+    Tcl_CallFrame *callFramePtr,/* Points to a call frame structure to push.
+				 * Storage for this has already been allocated
+				 * by the caller; typically this is the
+				 * address of a CallFrame structure allocated
+				 * on the caller's C stack. The call frame
+				 * will be initialized by this function. The
+				 * caller can pop the frame later with
+				 * Tcl_PopCallFrame, and it is responsible for
+				 * freeing the frame's storage. */
+    Tcl_Namespace *namespacePtr,/* Points to the namespace in which the frame
+				 * will execute. If NULL, the interpreter's
+				 * current namespace will be used. */
+    int isProcCallFrame)	/* If nonzero, the frame represents a called
+				 * Tcl procedure and may have local vars. Vars
+				 * will ordinarily be looked up in the frame.
+				 * If new variables are created, they will be
+				 * created in the frame. If 0, the frame is
+				 * for a "namespace eval" or "namespace
+				 * inscope" command and var references are
+				 * treated as references to namespace
+				 * variables. */
 {
     Interp *iPtr = (Interp *) interp;
     register CallFrame *framePtr = (CallFrame *) callFramePtr;
     register Namespace *nsPtr;
 
     if (namespacePtr == NULL) {
-	nsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+	nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     } else {
-        nsPtr = (Namespace *) namespacePtr;
-        if (nsPtr->flags & NS_DEAD) {
-	    panic("Trying to push call frame for dead namespace");
+	nsPtr = (Namespace *) namespacePtr;
+
+	/*
+	 * TODO: Examine whether it would be better to guard based on NS_DYING
+	 * or NS_KILLED. It appears that these are not tested because they can
+	 * be set in a global interp that has been [namespace delete]d, but
+	 * which never really completely goes away because of lingering global
+	 * things like ::errorInfo and [::unknown] and hidden commands.
+	 * Review of those designs might permit stricter checking here.
+	 */
+
+	if (nsPtr->flags & NS_DEAD) {
+	    Tcl_Panic("Trying to push call frame for dead namespace");
 	    /*NOTREACHED*/
-        }
+	}
     }
 
     nsPtr->activationCount++;
@@ -304,18 +402,20 @@ Tcl_PushCallFrame(interp, callFramePtr, namespacePtr, isProcCallFrame)
     framePtr->callerPtr = iPtr->framePtr;
     framePtr->callerVarPtr = iPtr->varFramePtr;
     if (iPtr->varFramePtr != NULL) {
-        framePtr->level = (iPtr->varFramePtr->level + 1);
+	framePtr->level = (iPtr->varFramePtr->level + 1);
     } else {
-        framePtr->level = 1;
+	framePtr->level = 0;
     }
-    framePtr->procPtr = NULL; 	   /* no called procedure */
-    framePtr->varTablePtr = NULL;  /* and no local variables */
+    framePtr->procPtr = NULL;		/* no called procedure */
+    framePtr->varTablePtr = NULL;	/* and no local variables */
     framePtr->numCompiledLocals = 0;
     framePtr->compiledLocals = NULL;
+    framePtr->clientData = NULL;
+    framePtr->localCachePtr = NULL;
 
     /*
-     * Push the new call frame onto the interpreter's stack of procedure
-     * call frames making it the current frame.
+     * Push the new call frame onto the interpreter's stack of procedure call
+     * frames making it the current frame.
      */
 
     iPtr->framePtr = framePtr;
@@ -336,51 +436,57 @@ Tcl_PushCallFrame(interp, callFramePtr, namespacePtr, isProcCallFrame)
  *
  * Side effects:
  *	Modifies the call stack of the interpreter. Resets various fields of
- *	the popped call frame. If a namespace has been deleted and
- *	has no more activations on the call stack, the namespace is
- *	destroyed.
+ *	the popped call frame. If a namespace has been deleted and has no more
+ *	activations on the call stack, the namespace is destroyed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_PopCallFrame(interp)
-    Tcl_Interp* interp;		/* Interpreter with call frame to pop. */
+Tcl_PopCallFrame(
+    Tcl_Interp *interp)		/* Interpreter with call frame to pop. */
 {
     register Interp *iPtr = (Interp *) interp;
     register CallFrame *framePtr = iPtr->framePtr;
     Namespace *nsPtr;
 
     /*
-     * It's important to remove the call frame from the interpreter's stack
-     * of call frames before deleting local variables, so that traces
-     * invoked by the variable deletion don't see the partially-deleted
-     * frame.
+     * It's important to remove the call frame from the interpreter's stack of
+     * call frames before deleting local variables, so that traces invoked by
+     * the variable deletion don't see the partially-deleted frame.
      */
 
-    iPtr->framePtr = framePtr->callerPtr;
-    iPtr->varFramePtr = framePtr->callerVarPtr;
+    if (framePtr->callerPtr) {
+	iPtr->framePtr = framePtr->callerPtr;
+	iPtr->varFramePtr = framePtr->callerVarPtr;
+    } else {
+	/* Tcl_PopCallFrame: trying to pop rootCallFrame! */
+    }
 
     if (framePtr->varTablePtr != NULL) {
-        TclDeleteVars(iPtr, framePtr->varTablePtr);
-        ckfree((char *) framePtr->varTablePtr);
-        framePtr->varTablePtr = NULL;
+	TclDeleteVars(iPtr, framePtr->varTablePtr);
+	ckfree((char *) framePtr->varTablePtr);
+	framePtr->varTablePtr = NULL;
     }
     if (framePtr->numCompiledLocals > 0) {
-        TclDeleteCompiledLocalVars(iPtr, framePtr);
+	TclDeleteCompiledLocalVars(iPtr, framePtr);
+	if (--framePtr->localCachePtr->refCount == 0) {
+	    TclFreeLocalCache(interp, framePtr->localCachePtr);
+	}
+	framePtr->localCachePtr = NULL;
     }
 
     /*
-     * Decrement the namespace's count of active call frames. If the
-     * namespace is "dying" and there are no more active call frames,
-     * call Tcl_DeleteNamespace to destroy it.
+     * Decrement the namespace's count of active call frames. If the namespace
+     * is "dying" and there are no more active call frames, call
+     * Tcl_DeleteNamespace to destroy it.
      */
 
     nsPtr = framePtr->nsPtr;
     nsPtr->activationCount--;
     if ((nsPtr->flags & NS_DYING)
-	    && (nsPtr->activationCount == 0)) {
-        Tcl_DeleteNamespace((Tcl_Namespace *) nsPtr);
+	    && (nsPtr->activationCount - (nsPtr == iPtr->globalNsPtr) == 0)) {
+	Tcl_DeleteNamespace((Tcl_Namespace *) nsPtr);
     }
     framePtr->nsPtr = NULL;
 }
@@ -388,136 +494,345 @@ Tcl_PopCallFrame(interp)
 /*
  *----------------------------------------------------------------------
  *
+ * TclPushStackFrame --
+ *
+ *	Allocates a new call frame in the interpreter's execution stack, then
+ *	pushes it onto the interpreter's Tcl call stack. Called when executing
+ *	a Tcl procedure or a "namespace eval" or "namespace inscope" command.
+ *
+ * Results:
+ *	Returns TCL_OK if successful, or TCL_ERROR (along with an error
+ *	message in the interpreter's result object) if something goes wrong.
+ *
+ * Side effects:
+ *	Modifies the interpreter's Tcl call stack.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclPushStackFrame(
+    Tcl_Interp *interp,		/* Interpreter in which the new call frame is
+				 * to be pushed. */
+    Tcl_CallFrame **framePtrPtr,/* Place to store a pointer to the stack
+				 * allocated call frame. */
+    Tcl_Namespace *namespacePtr,/* Points to the namespace in which the frame
+				 * will execute. If NULL, the interpreter's
+				 * current namespace will be used. */
+    int isProcCallFrame)	/* If nonzero, the frame represents a called
+				 * Tcl procedure and may have local vars. Vars
+				 * will ordinarily be looked up in the frame.
+				 * If new variables are created, they will be
+				 * created in the frame. If 0, the frame is
+				 * for a "namespace eval" or "namespace
+				 * inscope" command and var references are
+				 * treated as references to namespace
+				 * variables. */
+{
+    *framePtrPtr = (Tcl_CallFrame *) TclStackAlloc(interp, sizeof(CallFrame));
+    return Tcl_PushCallFrame(interp, *framePtrPtr, namespacePtr,
+	    isProcCallFrame);
+}
+
+void
+TclPopStackFrame(
+    Tcl_Interp *interp)		/* Interpreter with call frame to pop. */
+{
+    CallFrame *freePtr = ((Interp *)interp)->framePtr;
+
+    Tcl_PopCallFrame(interp);
+    TclStackFree(interp, freePtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * EstablishErrorCodeTraces --
+ *
+ *	Creates traces on the ::errorCode variable to keep its value
+ *	consistent with the expectations of legacy code.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Read and unset traces are established on ::errorCode.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+EstablishErrorCodeTraces(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    const char *name1,
+    const char *name2,
+    int flags)
+{
+    Tcl_TraceVar(interp, "errorCode", TCL_GLOBAL_ONLY | TCL_TRACE_READS,
+	    ErrorCodeRead, NULL);
+    Tcl_TraceVar(interp, "errorCode", TCL_GLOBAL_ONLY | TCL_TRACE_UNSETS,
+	    EstablishErrorCodeTraces, NULL);
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ErrorCodeRead --
+ *
+ *	Called when the ::errorCode variable is read. Copies the current value
+ *	of the interp's errorCode field into ::errorCode.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+ErrorCodeRead(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    const char *name1,
+    const char *name2,
+    int flags)
+{
+    Interp *iPtr = (Interp *)interp;
+
+    if (Tcl_InterpDeleted(interp) || !(iPtr->flags & ERR_LEGACY_COPY)) {
+	return NULL;
+    }
+    if (iPtr->errorCode) {
+	Tcl_ObjSetVar2(interp, iPtr->ecVar, NULL,
+		iPtr->errorCode, TCL_GLOBAL_ONLY);
+	return NULL;
+    }
+    if (NULL == Tcl_ObjGetVar2(interp, iPtr->ecVar, NULL, TCL_GLOBAL_ONLY)) {
+	Tcl_ObjSetVar2(interp, iPtr->ecVar, NULL,
+		Tcl_NewObj(), TCL_GLOBAL_ONLY);
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * EstablishErrorInfoTraces --
+ *
+ *	Creates traces on the ::errorInfo variable to keep its value
+ *	consistent with the expectations of legacy code.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Read and unset traces are established on ::errorInfo.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+EstablishErrorInfoTraces(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    const char *name1,
+    const char *name2,
+    int flags)
+{
+    Tcl_TraceVar(interp, "errorInfo", TCL_GLOBAL_ONLY | TCL_TRACE_READS,
+	    ErrorInfoRead, NULL);
+    Tcl_TraceVar(interp, "errorInfo", TCL_GLOBAL_ONLY | TCL_TRACE_UNSETS,
+	    EstablishErrorInfoTraces, NULL);
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ErrorInfoRead --
+ *
+ *	Called when the ::errorInfo variable is read. Copies the current value
+ *	of the interp's errorInfo field into ::errorInfo.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+ErrorInfoRead(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    const char *name1,
+    const char *name2,
+    int flags)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    if (Tcl_InterpDeleted(interp) || !(iPtr->flags & ERR_LEGACY_COPY)) {
+	return NULL;
+    }
+    if (iPtr->errorInfo) {
+	Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL,
+		iPtr->errorInfo, TCL_GLOBAL_ONLY);
+	return NULL;
+    }
+    if (NULL == Tcl_ObjGetVar2(interp, iPtr->eiVar, NULL, TCL_GLOBAL_ONLY)) {
+	Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL,
+		Tcl_NewObj(), TCL_GLOBAL_ONLY);
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_CreateNamespace --
  *
- *	Creates a new namespace with the given name. If there is no
- *	active namespace (i.e., the interpreter is being initialized),
- *	the global :: namespace is created and returned.
+ *	Creates a new namespace with the given name. If there is no active
+ *	namespace (i.e., the interpreter is being initialized), the global ::
+ *	namespace is created and returned.
  *
  * Results:
- *	Returns a pointer to the new namespace if successful. If the
- *	namespace already exists or if another error occurs, this routine
- *	returns NULL, along with an error message in the interpreter's
- *	result object.
+ *	Returns a pointer to the new namespace if successful. If the namespace
+ *	already exists or if another error occurs, this routine returns NULL,
+ *	along with an error message in the interpreter's result object.
  *
  * Side effects:
- *	If the name contains "::" qualifiers and a parent namespace does
- *	not already exist, it is automatically created. 
+ *	If the name contains "::" qualifiers and a parent namespace does not
+ *	already exist, it is automatically created.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Namespace *
-Tcl_CreateNamespace(interp, name, clientData, deleteProc)
-    Tcl_Interp *interp;             /* Interpreter in which a new namespace
-				     * is being created. Also used for
-				     * error reporting. */
-    CONST char *name;               /* Name for the new namespace. May be a
-				     * qualified name with names of ancestor
-				     * namespaces separated by "::"s. */
-    ClientData clientData;	    /* One-word value to store with
-				     * namespace. */
-    Tcl_NamespaceDeleteProc *deleteProc;
-    				    /* Procedure called to delete client
-				     * data when the namespace is deleted.
-				     * NULL if no procedure should be
-				     * called. */
+Tcl_CreateNamespace(
+    Tcl_Interp *interp,		/* Interpreter in which a new namespace is
+				 * being created. Also used for error
+				 * reporting. */
+    const char *name,		/* Name for the new namespace. May be a
+				 * qualified name with names of ancestor
+				 * namespaces separated by "::"s. */
+    ClientData clientData,	/* One-word value to store with namespace. */
+    Tcl_NamespaceDeleteProc *deleteProc)
+				/* Function called to delete client data when
+				 * the namespace is deleted. NULL if no
+				 * function should be called. */
 {
     Interp *iPtr = (Interp *) interp;
     register Namespace *nsPtr, *ancestorPtr;
     Namespace *parentPtr, *dummy1Ptr, *dummy2Ptr;
     Namespace *globalNsPtr = iPtr->globalNsPtr;
-    CONST char *simpleName;
+    const char *simpleName;
     Tcl_HashEntry *entryPtr;
     Tcl_DString buffer1, buffer2;
-    int newEntry;
+    Tcl_DString *namePtr, *buffPtr;
+    int newEntry, nameLen;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     /*
-     * If there is no active namespace, the interpreter is being
-     * initialized. 
+     * If there is no active namespace, the interpreter is being initialized.
      */
 
     if ((globalNsPtr == NULL) && (iPtr->varFramePtr == NULL)) {
 	/*
-	 * Treat this namespace as the global namespace, and avoid
-	 * looking for a parent.
+	 * Treat this namespace as the global namespace, and avoid looking for
+	 * a parent.
 	 */
-	
-        parentPtr = NULL;
-        simpleName = "";
+
+	parentPtr = NULL;
+	simpleName = "";
     } else if (*name == '\0') {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"can't create namespace \"\": only global namespace can have empty name", (char *) NULL);
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "can't create namespace \"\": "
+		"only global namespace can have empty name", NULL);
 	return NULL;
     } else {
 	/*
 	 * Find the parent for the new namespace.
 	 */
 
-	TclGetNamespaceForQualName(interp, name, NULL, CREATE_NS_IF_UNKNOWN,
+	TclGetNamespaceForQualName(interp, name, NULL, TCL_CREATE_NS_IF_UNKNOWN,
 		&parentPtr, &dummy1Ptr, &dummy2Ptr, &simpleName);
 
 	/*
 	 * If the unqualified name at the end is empty, there were trailing
-	 * "::"s after the namespace's name which we ignore. The new
-	 * namespace was already (recursively) created and is pointed to
-	 * by parentPtr.
+	 * "::"s after the namespace's name which we ignore. The new namespace
+	 * was already (recursively) created and is pointed to by parentPtr.
 	 */
 
 	if (*simpleName == '\0') {
 	    return (Tcl_Namespace *) parentPtr;
 	}
 
-        /*
-         * Check for a bad namespace name and make sure that the name
-	 * does not already exist in the parent namespace.
+	/*
+	 * Check for a bad namespace name and make sure that the name does not
+	 * already exist in the parent namespace.
 	 */
 
-        if (Tcl_FindHashEntry(&parentPtr->childTable, simpleName) != NULL) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "can't create namespace \"", name,
-    	    	    "\": already exists", (char *) NULL);
-            return NULL;
-        }
+	if (Tcl_FindHashEntry(&parentPtr->childTable, simpleName) != NULL) {
+	    Tcl_AppendResult(interp, "can't create namespace \"", name,
+		    "\": already exists", NULL);
+	    return NULL;
+	}
     }
 
     /*
-     * Create the new namespace and root it in its parent. Increment the
-     * count of namespaces created.
+     * Create the new namespace and root it in its parent. Increment the count
+     * of namespaces created.
      */
 
-
     nsPtr = (Namespace *) ckalloc(sizeof(Namespace));
-    nsPtr->name            = (char *) ckalloc((unsigned) (strlen(simpleName)+1));
+    nsPtr->name = ckalloc((unsigned) (strlen(simpleName)+1));
     strcpy(nsPtr->name, simpleName);
-    nsPtr->fullName        = NULL;   /* set below */
-    nsPtr->clientData      = clientData;
-    nsPtr->deleteProc      = deleteProc;
-    nsPtr->parentPtr       = parentPtr;
+    nsPtr->fullName = NULL;		/* Set below. */
+    nsPtr->clientData = clientData;
+    nsPtr->deleteProc = deleteProc;
+    nsPtr->parentPtr = parentPtr;
     Tcl_InitHashTable(&nsPtr->childTable, TCL_STRING_KEYS);
-    Tcl_MutexLock(&nsMutex);
-    numNsCreated++;
-    nsPtr->nsId            = numNsCreated;
-    Tcl_MutexUnlock(&nsMutex);
-    nsPtr->interp          = interp;
-    nsPtr->flags           = 0;
+    nsPtr->nsId = ++(tsdPtr->numNsCreated);
+    nsPtr->interp = interp;
+    nsPtr->flags = 0;
     nsPtr->activationCount = 0;
-    nsPtr->refCount        = 0;
+    nsPtr->refCount = 0;
     Tcl_InitHashTable(&nsPtr->cmdTable, TCL_STRING_KEYS);
-    Tcl_InitHashTable(&nsPtr->varTable, TCL_STRING_KEYS);
-    nsPtr->exportArrayPtr  = NULL;
+    TclInitVarHashTable(&nsPtr->varTable, nsPtr);
+    nsPtr->exportArrayPtr = NULL;
     nsPtr->numExportPatterns = 0;
     nsPtr->maxExportPatterns = 0;
-    nsPtr->cmdRefEpoch       = 0;
-    nsPtr->resolverEpoch     = 0;
-    nsPtr->cmdResProc        = NULL;
-    nsPtr->varResProc        = NULL;
+    nsPtr->cmdRefEpoch = 0;
+    nsPtr->resolverEpoch = 0;
+    nsPtr->cmdResProc = NULL;
+    nsPtr->varResProc = NULL;
     nsPtr->compiledVarResProc = NULL;
+    nsPtr->exportLookupEpoch = 0;
+    nsPtr->ensembles = NULL;
+    nsPtr->unknownHandlerPtr = NULL;
+    nsPtr->commandPathLength = 0;
+    nsPtr->commandPathArray = NULL;
+    nsPtr->commandPathSourceList = NULL;
 
     if (parentPtr != NULL) {
-        entryPtr = Tcl_CreateHashEntry(&parentPtr->childTable, simpleName,
-	        &newEntry);
-        Tcl_SetHashValue(entryPtr, (ClientData) nsPtr);
+	entryPtr = Tcl_CreateHashEntry(&parentPtr->childTable, simpleName,
+		&newEntry);
+	Tcl_SetHashValue(entryPtr, nsPtr);
+    } else {
+	/*
+	 * In the global namespace create traces to maintain the ::errorInfo
+	 * and ::errorCode variables.
+	 */
+
+	iPtr->globalNsPtr = nsPtr;
+	EstablishErrorInfoTraces(NULL, interp, NULL, NULL, 0);
+	EstablishErrorCodeTraces(NULL, interp, NULL, NULL, 0);
     }
 
     /*
@@ -526,22 +841,41 @@ Tcl_CreateNamespace(interp, name, clientData, deleteProc)
 
     Tcl_DStringInit(&buffer1);
     Tcl_DStringInit(&buffer2);
-    for (ancestorPtr = nsPtr;  ancestorPtr != NULL;
+    namePtr = &buffer1;
+    buffPtr = &buffer2;
+    for (ancestorPtr = nsPtr; ancestorPtr != NULL;
 	    ancestorPtr = ancestorPtr->parentPtr) {
-        if (ancestorPtr != globalNsPtr) {
-            Tcl_DStringAppend(&buffer1, "::", 2);
-            Tcl_DStringAppend(&buffer1, ancestorPtr->name, -1);
-        }
-        Tcl_DStringAppend(&buffer1, Tcl_DStringValue(&buffer2), -1);
+	if (ancestorPtr != globalNsPtr) {
+	    register Tcl_DString *tempPtr = namePtr;
+
+	    Tcl_DStringAppend(buffPtr, "::", 2);
+	    Tcl_DStringAppend(buffPtr, ancestorPtr->name, -1);
+	    Tcl_DStringAppend(buffPtr, Tcl_DStringValue(namePtr),
+		    Tcl_DStringLength(namePtr));
+
+	    /*
+	     * Clear the unwanted buffer or we end up appending to previous
+	     * results, making the namespace fullNames of nested namespaces
+	     * very wrong (and strange).
+	     */
+
+	    Tcl_DStringSetLength(namePtr, 0);
+
+	    /*
+	     * Now swap the buffer pointers so that we build in the other
+	     * buffer. This is faster than repeated copying back and forth
+	     * between buffers.
+	     */
 
-        Tcl_DStringSetLength(&buffer2, 0);
-        Tcl_DStringAppend(&buffer2, Tcl_DStringValue(&buffer1), -1);
-        Tcl_DStringSetLength(&buffer1, 0);
+	    namePtr = buffPtr;
+	    buffPtr = tempPtr;
+	}
     }
-    
-    name = Tcl_DStringValue(&buffer2);
-    nsPtr->fullName = (char *) ckalloc((unsigned) (strlen(name)+1));
-    strcpy(nsPtr->fullName, name);
+
+    name = Tcl_DStringValue(namePtr);
+    nameLen = Tcl_DStringLength(namePtr);
+    nsPtr->fullName = ckalloc((unsigned) (nameLen+1));
+    memcpy(nsPtr->fullName, name, (unsigned) nameLen + 1);
 
     Tcl_DStringFree(&buffer1);
     Tcl_DStringFree(&buffer2);
@@ -565,50 +899,79 @@ Tcl_CreateNamespace(interp, name, clientData, deleteProc)
  *	None.
  *
  * Side effects:
- *	When a namespace is deleted, it is automatically removed as a
- *	child of its parent namespace. Also, all its commands, variables
- *	and child namespaces are deleted.
+ *	When a namespace is deleted, it is automatically removed as a child of
+ *	its parent namespace. Also, all its commands, variables and child
+ *	namespaces are deleted.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteNamespace(namespacePtr)
-    Tcl_Namespace *namespacePtr;   /* Points to the namespace to delete. */
+Tcl_DeleteNamespace(
+    Tcl_Namespace *namespacePtr)/* Points to the namespace to delete. */
 {
     register Namespace *nsPtr = (Namespace *) namespacePtr;
     Interp *iPtr = (Interp *) nsPtr->interp;
-    Namespace *globalNsPtr =
-	    (Namespace *) Tcl_GetGlobalNamespace((Tcl_Interp *) iPtr);
+    Namespace *globalNsPtr = (Namespace *)
+	    TclGetGlobalNamespace((Tcl_Interp *) iPtr);
     Tcl_HashEntry *entryPtr;
 
     /*
+     * If the namespace has associated ensemble commands, delete them first.
+     * This leaves the actual contents of the namespace alone (unless they are
+     * linked ensemble commands, of course). Note that this code is actually
+     * reentrant so command delete traces won't purturb things badly.
+     */
+
+    while (nsPtr->ensembles != NULL) {
+	EnsembleConfig *ensemblePtr = (EnsembleConfig *) nsPtr->ensembles;
+
+	/*
+	 * Splice out and link to indicate that we've already been killed.
+	 */
+
+	nsPtr->ensembles = (Tcl_Ensemble *) ensemblePtr->next;
+	ensemblePtr->next = ensemblePtr;
+	Tcl_DeleteCommandFromToken(nsPtr->interp, ensemblePtr->token);
+    }
+
+    /*
+     * If the namespace has a registered unknown handler (TIP 181), then free
+     * it here.
+     */
+
+    if (nsPtr->unknownHandlerPtr != NULL) {
+	Tcl_DecrRefCount(nsPtr->unknownHandlerPtr);
+	nsPtr->unknownHandlerPtr = NULL;
+    }
+
+    /*
      * If the namespace is on the call frame stack, it is marked as "dying"
-     * (NS_DYING is OR'd into its flags): the namespace can't be looked up
-     * by name but its commands and variables are still usable by those
-     * active call frames. When all active call frames referring to the
-     * namespace have been popped from the Tcl stack, Tcl_PopCallFrame will
-     * call this procedure again to delete everything in the namespace.
-     * If no nsName objects refer to the namespace (i.e., if its refCount 
-     * is zero), its commands and variables are deleted and the storage for
-     * its namespace structure is freed. Otherwise, if its refCount is
-     * nonzero, the namespace's commands and variables are deleted but the
-     * structure isn't freed. Instead, NS_DEAD is OR'd into the structure's
-     * flags to allow the namespace resolution code to recognize that the
-     * namespace is "deleted". The structure's storage is freed by
-     * FreeNsNameInternalRep when its refCount reaches 0.
-     */
-
-    if (nsPtr->activationCount > 0) {
-        nsPtr->flags |= NS_DYING;
-        if (nsPtr->parentPtr != NULL) {
-            entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable,
+     * (NS_DYING is OR'd into its flags): the namespace can't be looked up by
+     * name but its commands and variables are still usable by those active
+     * call frames. When all active call frames referring to the namespace
+     * have been popped from the Tcl stack, Tcl_PopCallFrame will call this
+     * function again to delete everything in the namespace. If no nsName
+     * objects refer to the namespace (i.e., if its refCount is zero), its
+     * commands and variables are deleted and the storage for its namespace
+     * structure is freed. Otherwise, if its refCount is nonzero, the
+     * namespace's commands and variables are deleted but the structure isn't
+     * freed. Instead, NS_DEAD is OR'd into the structure's flags to allow the
+     * namespace resolution code to recognize that the namespace is "deleted".
+     * The structure's storage is freed by FreeNsNameInternalRep when its
+     * refCount reaches 0.
+     */
+
+    if (nsPtr->activationCount - (nsPtr == globalNsPtr) > 0) {
+	nsPtr->flags |= NS_DYING;
+	if (nsPtr->parentPtr != NULL) {
+	    entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable,
 		    nsPtr->name);
-            if (entryPtr != NULL) {
-                Tcl_DeleteHashEntry(entryPtr);
-            }
-        }
-        nsPtr->parentPtr = NULL;
+	    if (entryPtr != NULL) {
+		Tcl_DeleteHashEntry(entryPtr);
+	    }
+	}
+	nsPtr->parentPtr = NULL;
     } else if (!(nsPtr->flags & NS_KILLED)) {
 	/*
 	 * Delete the namespace and everything in it. If this is the global
@@ -619,38 +982,46 @@ Tcl_DeleteNamespace(namespacePtr)
 	 */
 
 	nsPtr->flags |= (NS_DYING|NS_KILLED);
-	
-        TclTeardownNamespace(nsPtr);
 
-        if ((nsPtr != globalNsPtr) || (iPtr->flags & DELETED)) {
-            /*
+	TclTeardownNamespace(nsPtr);
+
+	if ((nsPtr != globalNsPtr) || (iPtr->flags & DELETED)) {
+	    /*
 	     * If this is the global namespace, then it may have residual
-             * "errorInfo" and "errorCode" variables for errors that
-             * occurred while it was being torn down.  Try to clear the
-             * variable list one last time.
+	     * "errorInfo" and "errorCode" variables for errors that occurred
+	     * while it was being torn down. Try to clear the variable list
+	     * one last time.
+	     */
+
+	    TclDeleteNamespaceVars(nsPtr);
+
+	    Tcl_DeleteHashTable(&nsPtr->childTable);
+	    Tcl_DeleteHashTable(&nsPtr->cmdTable);
+
+	    /*
+	     * If the reference count is 0, then discard the namespace.
+	     * Otherwise, mark it as "dead" so that it can't be used.
 	     */
 
-            TclDeleteNamespaceVars(nsPtr);
-	    
-            Tcl_DeleteHashTable(&nsPtr->childTable);
-            Tcl_DeleteHashTable(&nsPtr->cmdTable);
-
-            /*
-             * If the reference count is 0, then discard the namespace.
-             * Otherwise, mark it as "dead" so that it can't be used.
-             */
-
-            if (nsPtr->refCount == 0) {
-                NamespaceFree(nsPtr);
-            } else {
-                nsPtr->flags |= NS_DEAD;
-            }
-        } else {
+	    if (nsPtr->refCount == 0) {
+		NamespaceFree(nsPtr);
+	    } else {
+		nsPtr->flags |= NS_DEAD;
+	    }
+	} else {
+	    /*
+	     * Restore the ::errorInfo and ::errorCode traces.
+	     */
+
+	    EstablishErrorInfoTraces(NULL, nsPtr->interp, NULL, NULL, 0);
+	    EstablishErrorCodeTraces(NULL, nsPtr->interp, NULL, NULL, 0);
+
 	    /*
-	     * We didn't really kill it, so remove the KILLED marks, so
-	     * it can get killed later, avoiding mem leaks
+	     * We didn't really kill it, so remove the KILLED marks, so it can
+	     * get killed later, avoiding mem leaks.
 	     */
-	     nsPtr->flags &= ~(NS_DYING|NS_KILLED);
+
+	    nsPtr->flags &= ~(NS_DYING|NS_KILLED);
 	}
     }
 }
@@ -665,9 +1036,7 @@ Tcl_DeleteNamespace(namespacePtr)
  *	commands, variables, and child namespaces.
  *
  *	This is kept separate from Tcl_DeleteNamespace so that the global
- *	namespace can be handled specially. Global variables like
- *	"errorInfo" and "errorCode" need to remain intact while other
- *	namespaces and commands are torn down, in case any errors occur.
+ *	namespace can be handled specially.
  *
  * Results:
  *	None.
@@ -675,15 +1044,13 @@ Tcl_DeleteNamespace(namespacePtr)
  * Side effects:
  *	Removes this namespace from its parent's child namespace hashtable.
  *	Deletes all commands, variables and namespaces in this namespace.
- *	If this is the global namespace, the "errorInfo" and "errorCode"
- *	variables are left alone and deleted later.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclTeardownNamespace(nsPtr)
-    register Namespace *nsPtr;	/* Points to the namespace to be dismantled
+TclTeardownNamespace(
+    register Namespace *nsPtr)	/* Points to the namespace to be dismantled
 				 * and unlinked from its parent. */
 {
     Interp *iPtr = (Interp *) nsPtr->interp;
@@ -691,69 +1058,30 @@ TclTeardownNamespace(nsPtr)
     Tcl_HashSearch search;
     Tcl_Namespace *childNsPtr;
     Tcl_Command cmd;
-    Namespace *globalNsPtr =
-	    (Namespace *) Tcl_GetGlobalNamespace((Tcl_Interp *) iPtr);
     int i;
 
     /*
-     * Start by destroying the namespace's variable table,
-     * since variables might trigger traces.
+     * Start by destroying the namespace's variable table, since variables
+     * might trigger traces. Variable table should be cleared but not freed!
+     * TclDeleteNamespaceVars frees it, so we reinitialize it afterwards.
      */
 
-    if (nsPtr == globalNsPtr) {
-	/*
-	 * This is the global namespace.  Tearing it down will destroy the
-	 * ::errorInfo and ::errorCode variables.  We save and restore them
-	 * in case there are any errors in progress, so the error details
-	 * they contain will not be lost.  See test namespace-8.5
-	 */
-    
-	Tcl_Obj *errorInfo = Tcl_GetVar2Ex(nsPtr->interp, "errorInfo",
-		NULL, TCL_GLOBAL_ONLY);
-	Tcl_Obj *errorCode = Tcl_GetVar2Ex(nsPtr->interp, "errorCode",
-		NULL, TCL_GLOBAL_ONLY);
-
-	if (errorInfo) {
-	    Tcl_IncrRefCount(errorInfo);
-	}
-	if (errorCode) {
-	    Tcl_IncrRefCount(errorCode);
-	}
-
-        TclDeleteNamespaceVars(nsPtr);
-        Tcl_InitHashTable(&nsPtr->varTable, TCL_STRING_KEYS);
-
-	if (errorInfo) {
-	    Tcl_SetVar2Ex(nsPtr->interp, "errorInfo", NULL,
-		    errorInfo, TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(errorInfo);
-	}
-	if (errorCode) {
-	    Tcl_SetVar2Ex(nsPtr->interp, "errorCode", NULL,
-		    errorCode, TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(errorCode);
-	}
-    } else {
-	/*
-	 * Variable table should be cleared but not freed! TclDeleteVars
-	 * frees it, so we reinitialize it afterwards.
-	 */
-    
-        TclDeleteNamespaceVars(nsPtr);
-        Tcl_InitHashTable(&nsPtr->varTable, TCL_STRING_KEYS);
-    }
+    TclDeleteNamespaceVars(nsPtr);
+    TclInitVarHashTable(&nsPtr->varTable, nsPtr);
 
     /*
      * Delete all commands in this namespace. Be careful when traversing the
      * hash table: when each command is deleted, it removes itself from the
      * command table.
+     *
+     * Don't optimize to Tcl_NextHashEntry() because of traces.
      */
 
     for (entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
-            entryPtr != NULL;
-            entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search)) {
-        cmd = (Tcl_Command) Tcl_GetHashValue(entryPtr);
-        Tcl_DeleteCommandFromToken((Tcl_Interp *) iPtr, cmd);
+	    entryPtr != NULL;
+	    entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search)) {
+	cmd = Tcl_GetHashValue(entryPtr);
+	Tcl_DeleteCommandFromToken((Tcl_Interp *) iPtr, cmd);
     }
     Tcl_DeleteHashTable(&nsPtr->cmdTable);
     Tcl_InitHashTable(&nsPtr->cmdTable, TCL_STRING_KEYS);
@@ -763,28 +1091,49 @@ TclTeardownNamespace(nsPtr)
      */
 
     if (nsPtr->parentPtr != NULL) {
-        entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable,
-	        nsPtr->name);
-        if (entryPtr != NULL) {
-            Tcl_DeleteHashEntry(entryPtr);
-        }
+	entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable,
+		nsPtr->name);
+	if (entryPtr != NULL) {
+	    Tcl_DeleteHashEntry(entryPtr);
+	}
     }
     nsPtr->parentPtr = NULL;
 
     /*
+     * Delete the namespace path if one is installed.
+     */
+
+    if (nsPtr->commandPathLength != 0) {
+	UnlinkNsPath(nsPtr);
+	nsPtr->commandPathLength = 0;
+    }
+    if (nsPtr->commandPathSourceList != NULL) {
+	NamespacePathEntry *nsPathPtr = nsPtr->commandPathSourceList;
+	do {
+	    if (nsPathPtr->nsPtr != NULL && nsPathPtr->creatorNsPtr != NULL) {
+		nsPathPtr->creatorNsPtr->cmdRefEpoch++;
+	    }
+	    nsPathPtr->nsPtr = NULL;
+	    nsPathPtr = nsPathPtr->nextPtr;
+	} while (nsPathPtr != NULL);
+	nsPtr->commandPathSourceList = NULL;
+    }
+
+    /*
      * Delete all the child namespaces.
      *
-     * BE CAREFUL: When each child is deleted, it will divorce
-     *    itself from its parent. You can't traverse a hash table
-     *    properly if its elements are being deleted. We use only
-     *    the Tcl_FirstHashEntry function to be safe.
+     * BE CAREFUL: When each child is deleted, it will divorce itself from its
+     * parent. You can't traverse a hash table properly if its elements are
+     * being deleted. We use only the Tcl_FirstHashEntry function to be safe.
+     *
+     * Don't optimize to Tcl_NextHashEntry() because of traces.
      */
 
     for (entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search);
-            entryPtr != NULL;
-            entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search)) {
-        childNsPtr = (Tcl_Namespace *) Tcl_GetHashValue(entryPtr);
-        Tcl_DeleteNamespace(childNsPtr);
+	    entryPtr != NULL;
+	    entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search)) {
+	childNsPtr = Tcl_GetHashValue(entryPtr);
+	Tcl_DeleteNamespace(childNsPtr);
     }
 
     /*
@@ -795,7 +1144,7 @@ TclTeardownNamespace(nsPtr)
 	for (i = 0;  i < nsPtr->numExportPatterns;  i++) {
 	    ckfree(nsPtr->exportArrayPtr[i]);
 	}
-        ckfree((char *) nsPtr->exportArrayPtr);
+	ckfree((char *) nsPtr->exportArrayPtr);
 	nsPtr->exportArrayPtr = NULL;
 	nsPtr->numExportPatterns = 0;
 	nsPtr->maxExportPatterns = 0;
@@ -806,15 +1155,15 @@ TclTeardownNamespace(nsPtr)
      */
 
     if (nsPtr->deleteProc != NULL) {
-        (*nsPtr->deleteProc)(nsPtr->clientData);
+	(*nsPtr->deleteProc)(nsPtr->clientData);
     }
     nsPtr->deleteProc = NULL;
     nsPtr->clientData = NULL;
 
     /*
-     * Reset the namespace's id field to ensure that this namespace won't
-     * be interpreted as valid by, e.g., the cache validation code for
-     * cached command references in Tcl_GetCommandFromObj.
+     * Reset the namespace's id field to ensure that this namespace won't be
+     * interpreted as valid by, e.g., the cache validation code for cached
+     * command references in Tcl_GetCommandFromObj.
      */
 
     nsPtr->nsId = 0;
@@ -825,9 +1174,8 @@ TclTeardownNamespace(nsPtr)
  *
  * NamespaceFree --
  *
- *	Called after a namespace has been deleted, when its
- *	reference count reaches 0.  Frees the data structure
- *	representing the namespace.
+ *	Called after a namespace has been deleted, when its reference count
+ *	reaches 0. Frees the data structure representing the namespace.
  *
  * Results:
  *	None.
@@ -839,8 +1187,8 @@ TclTeardownNamespace(nsPtr)
  */
 
 static void
-NamespaceFree(nsPtr)
-    register Namespace *nsPtr;	/* Points to the namespace to free. */
+NamespaceFree(
+    register Namespace *nsPtr)	/* Points to the namespace to free. */
 {
     /*
      * Most of the namespace's contents are freed when the namespace is
@@ -853,7 +1201,6 @@ NamespaceFree(nsPtr)
 
     ckfree((char *) nsPtr);
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -861,10 +1208,10 @@ NamespaceFree(nsPtr)
  * Tcl_Export --
  *
  *	Makes all the commands matching a pattern available to later be
- *	imported from the namespace specified by namespacePtr (or the
- *	current namespace if namespacePtr is NULL). The specified pattern is
- *	appended onto the namespace's export pattern list, which is
- *	optionally cleared beforehand.
+ *	imported from the namespace specified by namespacePtr (or the current
+ *	namespace if namespacePtr is NULL). The specified pattern is appended
+ *	onto the namespace's export pattern list, which is optionally cleared
+ *	beforehand.
  *
  * Results:
  *	Returns TCL_OK if successful, or TCL_ERROR (along with an error
@@ -878,23 +1225,22 @@ NamespaceFree(nsPtr)
  */
 
 int
-Tcl_Export(interp, namespacePtr, pattern, resetListFirst)
-    Tcl_Interp *interp;		 /* Current interpreter. */
-    Tcl_Namespace *namespacePtr; /* Points to the namespace from which 
-				  * commands are to be exported. NULL for
-                                  * the current namespace. */
-    CONST char *pattern;         /* String pattern indicating which commands
-                                  * to export. This pattern may not include
-				  * any namespace qualifiers; only commands
-				  * in the specified namespace may be
-				  * exported. */
-    int resetListFirst;		 /* If nonzero, resets the namespace's
-				  * export list before appending. */
-{
-#define INIT_EXPORT_PATTERNS 5    
+Tcl_Export(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Namespace *namespacePtr,/* Points to the namespace from which commands
+				 * are to be exported. NULL for the current
+				 * namespace. */
+    const char *pattern,	/* String pattern indicating which commands to
+				 * export. This pattern may not include any
+				 * namespace qualifiers; only commands in the
+				 * specified namespace may be exported. */
+    int resetListFirst)		/* If nonzero, resets the namespace's export
+				 * list before appending. */
+{
+#define INIT_EXPORT_PATTERNS 5
     Namespace *nsPtr, *exportNsPtr, *dummyPtr;
-    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    CONST char *simplePattern;
+    Namespace *currNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    const char *simplePattern;
     char *patternCpy;
     int neededElems, len, i;
 
@@ -903,9 +1249,9 @@ Tcl_Export(interp, namespacePtr, pattern, resetListFirst)
      */
 
     if (namespacePtr == NULL) {
-        nsPtr = (Namespace *) currNsPtr;
+	nsPtr = (Namespace *) currNsPtr;
     } else {
-        nsPtr = (Namespace *) namespacePtr;
+	nsPtr = (Namespace *) namespacePtr;
     }
 
     /*
@@ -920,6 +1266,7 @@ Tcl_Export(interp, namespacePtr, pattern, resetListFirst)
 	    }
 	    ckfree((char *) nsPtr->exportArrayPtr);
 	    nsPtr->exportArrayPtr = NULL;
+	    TclInvalidateNsCmdLookup(nsPtr);
 	    nsPtr->numExportPatterns = 0;
 	    nsPtr->maxExportPatterns = 0;
 	}
@@ -933,49 +1280,39 @@ Tcl_Export(interp, namespacePtr, pattern, resetListFirst)
 	    &exportNsPtr, &dummyPtr, &dummyPtr, &simplePattern);
 
     if ((exportNsPtr != nsPtr) || (strcmp(pattern, simplePattern) != 0)) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-	        "invalid export pattern \"", pattern,
-		"\": pattern can't specify a namespace",
-		(char *) NULL);
+	Tcl_AppendResult(interp, "invalid export pattern \"", pattern,
+		"\": pattern can't specify a namespace", NULL);
 	return TCL_ERROR;
     }
 
     /*
      * Make sure that we don't already have the pattern in the array
      */
+
     if (nsPtr->exportArrayPtr != NULL) {
 	for (i = 0;  i < nsPtr->numExportPatterns;  i++) {
 	    if (strcmp(pattern, nsPtr->exportArrayPtr[i]) == 0) {
 		/*
-		 * The pattern already exists in the list
+		 * The pattern already exists in the list.
 		 */
+
 		return TCL_OK;
 	    }
 	}
     }
 
     /*
-     * Make sure there is room in the namespace's pattern array for the
-     * new pattern.
+     * Make sure there is room in the namespace's pattern array for the new
+     * pattern.
      */
 
     neededElems = nsPtr->numExportPatterns + 1;
-    if (nsPtr->exportArrayPtr == NULL) {
+    if (neededElems > nsPtr->maxExportPatterns) {
+	nsPtr->maxExportPatterns = nsPtr->maxExportPatterns ?
+		2 * nsPtr->maxExportPatterns : INIT_EXPORT_PATTERNS;
 	nsPtr->exportArrayPtr = (char **)
-	        ckalloc((unsigned) (INIT_EXPORT_PATTERNS * sizeof(char *)));
-	nsPtr->numExportPatterns = 0;
-	nsPtr->maxExportPatterns = INIT_EXPORT_PATTERNS;
-    } else if (neededElems > nsPtr->maxExportPatterns) {
-	int numNewElems = 2 * nsPtr->maxExportPatterns;
-	size_t currBytes = nsPtr->numExportPatterns * sizeof(char *);
-	size_t newBytes  = numNewElems * sizeof(char *);
-	char **newPtr = (char **) ckalloc((unsigned) newBytes);
-
-	memcpy((VOID *) newPtr, (VOID *) nsPtr->exportArrayPtr,
-	        currBytes);
-	ckfree((char *) nsPtr->exportArrayPtr);
-	nsPtr->exportArrayPtr = (char **) newPtr;
-	nsPtr->maxExportPatterns = numNewElems;
+		ckrealloc((char *) nsPtr->exportArrayPtr,
+		sizeof(char *) * nsPtr->maxExportPatterns);
     }
 
     /*
@@ -983,11 +1320,20 @@ Tcl_Export(interp, namespacePtr, pattern, resetListFirst)
      */
 
     len = strlen(pattern);
-    patternCpy = (char *) ckalloc((unsigned) (len + 1));
-    strcpy(patternCpy, pattern);
-    
+    patternCpy = ckalloc((unsigned) (len + 1));
+    memcpy(patternCpy, pattern, (unsigned) len + 1);
+
     nsPtr->exportArrayPtr[nsPtr->numExportPatterns] = patternCpy;
     nsPtr->numExportPatterns++;
+
+    /*
+     * The list of commands actually exported from the namespace might have
+     * changed (probably will have!) However, we do not need to recompute this
+     * just yet; next time we need the info will be soon enough.
+     */
+
+    TclInvalidateNsCmdLookup(nsPtr);
+
     return TCL_OK;
 #undef INIT_EXPORT_PATTERNS
 }
@@ -1003,24 +1349,24 @@ Tcl_Export(interp, namespacePtr, pattern, resetListFirst)
  * Results:
  *	The return value is normally TCL_OK; in this case the object
  *	referenced by objPtr has each export pattern appended to it. If an
- *	error occurs, TCL_ERROR is returned and the interpreter's result
- *	holds an error message.
+ *	error occurs, TCL_ERROR is returned and the interpreter's result holds
+ *	an error message.
  *
  * Side effects:
- *	If necessary, the object referenced by objPtr is converted into
- *	a list object.
+ *	If necessary, the object referenced by objPtr is converted into a list
+ *	object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_AppendExportList(interp, namespacePtr, objPtr)
-    Tcl_Interp *interp;		 /* Interpreter used for error reporting. */
-    Tcl_Namespace *namespacePtr; /* Points to the namespace whose export
-				  * pattern list is appended onto objPtr.
-				  * NULL for the current namespace. */
-    Tcl_Obj *objPtr;		 /* Points to the Tcl object onto which the
-				  * export pattern list is appended. */
+Tcl_AppendExportList(
+    Tcl_Interp *interp,		/* Interpreter used for error reporting. */
+    Tcl_Namespace *namespacePtr,/* Points to the namespace whose export
+				 * pattern list is appended onto objPtr. NULL
+				 * for the current namespace. */
+    Tcl_Obj *objPtr)		/* Points to the Tcl object onto which the
+				 * export pattern list is appended. */
 {
     Namespace *nsPtr;
     int i, result;
@@ -1030,9 +1376,9 @@ Tcl_AppendExportList(interp, namespacePtr, objPtr)
      */
 
     if (namespacePtr == NULL) {
-        nsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+	nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     } else {
-        nsPtr = (Namespace *) namespacePtr;
+	nsPtr = (Namespace *) namespacePtr;
     }
 
     /*
@@ -1055,90 +1401,79 @@ Tcl_AppendExportList(interp, namespacePtr, objPtr)
  * Tcl_Import --
  *
  *	Imports all of the commands matching a pattern into the namespace
- *	specified by namespacePtr (or the current namespace if contextNsPtr
- *	is NULL). This is done by creating a new command (the "imported
- *	command") that points to the real command in its original namespace.
+ *	specified by namespacePtr (or the current namespace if contextNsPtr is
+ *	NULL). This is done by creating a new command (the "imported command")
+ *	that points to the real command in its original namespace.
  *
- *      If matching commands are on the autoload path but haven't been
- *	loaded yet, this command forces them to be loaded, then creates
- *	the links to them.
+ *	If matching commands are on the autoload path but haven't been loaded
+ *	yet, this command forces them to be loaded, then creates the links to
+ *	them.
  *
  * Results:
  *	Returns TCL_OK if successful, or TCL_ERROR (along with an error
  *	message in the interpreter's result) if something goes wrong.
  *
  * Side effects:
- *	Creates new commands in the importing namespace. These indirect
- *	calls back to the real command and are deleted if the real commands
- *	are deleted.
+ *	Creates new commands in the importing namespace. These indirect calls
+ *	back to the real command and are deleted if the real commands are
+ *	deleted.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_Import(interp, namespacePtr, pattern, allowOverwrite)
-    Tcl_Interp *interp;		 /* Current interpreter. */
-    Tcl_Namespace *namespacePtr; /* Points to the namespace into which the
-				  * commands are to be imported. NULL for
-                                  * the current namespace. */
-    CONST char *pattern;         /* String pattern indicating which commands
-                                  * to import. This pattern should be
-				  * qualified by the name of the namespace
-				  * from which to import the command(s). */
-    int allowOverwrite;		 /* If nonzero, allow existing commands to
-				  * be overwritten by imported commands.
-				  * If 0, return an error if an imported
-				  * cmd conflicts with an existing one. */
+Tcl_Import(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Namespace *namespacePtr,/* Points to the namespace into which the
+				 * commands are to be imported. NULL for the
+				 * current namespace. */
+    const char *pattern,	/* String pattern indicating which commands to
+				 * import. This pattern should be qualified by
+				 * the name of the namespace from which to
+				 * import the command(s). */
+    int allowOverwrite)		/* If nonzero, allow existing commands to be
+				 * overwritten by imported commands. If 0,
+				 * return an error if an imported cmd
+				 * conflicts with an existing one. */
 {
-    Interp *iPtr = (Interp *) interp;
     Namespace *nsPtr, *importNsPtr, *dummyPtr;
-    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    CONST char *simplePattern;
-    char *cmdName;
+    const char *simplePattern;
     register Tcl_HashEntry *hPtr;
     Tcl_HashSearch search;
-    Command *cmdPtr;
-    ImportRef *refPtr;
-    Tcl_Command autoCmd, importedCmd;
-    ImportedCmdData *dataPtr;
-    int wasExported, i, result;
 
     /*
      * If the specified namespace is NULL, use the current namespace.
      */
 
     if (namespacePtr == NULL) {
-        nsPtr = (Namespace *) currNsPtr;
+	nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     } else {
-        nsPtr = (Namespace *) namespacePtr;
+	nsPtr = (Namespace *) namespacePtr;
     }
- 
+
     /*
-     * First, invoke the "auto_import" command with the pattern
-     * being imported.  This command is part of the Tcl library.
-     * It looks for imported commands in autoloaded libraries and
-     * loads them in.  That way, they will be found when we try
-     * to create links below.
+     * First, invoke the "auto_import" command with the pattern being
+     * imported. This command is part of the Tcl library. It looks for
+     * imported commands in autoloaded libraries and loads them in. That way,
+     * they will be found when we try to create links below.
+     *
+     * Note that we don't just call Tcl_EvalObjv() directly because we do not
+     * want absence of the command to be a failure case.
      */
-    
-    autoCmd = Tcl_FindCommand(interp, "auto_import",
- 	    (Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY);
- 
-    if (autoCmd != NULL) {
+
+    if (Tcl_FindCommand(interp,"auto_import",NULL,TCL_GLOBAL_ONLY) != NULL) {
 	Tcl_Obj *objv[2];
- 
-	objv[0] = Tcl_NewStringObj("auto_import", -1);
-	Tcl_IncrRefCount(objv[0]);
+	int result;
+
+	TclNewLiteralStringObj(objv[0], "auto_import");
 	objv[1] = Tcl_NewStringObj(pattern, -1);
+
+	Tcl_IncrRefCount(objv[0]);
 	Tcl_IncrRefCount(objv[1]);
- 
-	cmdPtr = (Command *) autoCmd;
-	result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp,
-		2, objv);
- 
+	result = Tcl_EvalObjv(interp, 2, objv, TCL_GLOBAL_ONLY);
 	Tcl_DecrRefCount(objv[0]);
 	Tcl_DecrRefCount(objv[1]);
- 
+
 	if (result != TCL_OK) {
 	    return TCL_ERROR;
 	}
@@ -1146,37 +1481,34 @@ Tcl_Import(interp, namespacePtr, pattern, allowOverwrite)
     }
 
     /*
-     * From the pattern, find the namespace from which we are importing
-     * and get the simple pattern (no namespace qualifiers or ::'s) at
-     * the end.
+     * From the pattern, find the namespace from which we are importing and
+     * get the simple pattern (no namespace qualifiers or ::'s) at the end.
      */
 
     if (strlen(pattern) == 0) {
-	Tcl_SetStringObj(Tcl_GetObjResult(interp),
-	        "empty import pattern", -1);
-        return TCL_ERROR;
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("empty import pattern", -1));
+	return TCL_ERROR;
     }
     TclGetNamespaceForQualName(interp, pattern, nsPtr, TCL_NAMESPACE_ONLY,
 	    &importNsPtr, &dummyPtr, &dummyPtr, &simplePattern);
 
     if (importNsPtr == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"unknown namespace in import pattern \"",
-		pattern, "\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "unknown namespace in import pattern \"",
+		pattern, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", pattern, NULL);
+	return TCL_ERROR;
     }
     if (importNsPtr == nsPtr) {
 	if (pattern == simplePattern) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+	    Tcl_AppendResult(interp,
 		    "no namespace specified in import pattern \"", pattern,
-		    "\"", (char *) NULL);
+		    "\"", NULL);
 	} else {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "import pattern \"", pattern,
+	    Tcl_AppendResult(interp, "import pattern \"", pattern,
 		    "\" tries to import from namespace \"",
-		    importNsPtr->name, "\" into itself", (char *) NULL);
+		    importNsPtr->name, "\" into itself", NULL);
 	}
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
@@ -1186,118 +1518,154 @@ Tcl_Import(interp, namespacePtr, pattern, allowOverwrite)
      * commands redirect their invocations to the "real" command.
      */
 
+    if ((simplePattern != NULL) && TclMatchIsTrivial(simplePattern)) {
+	hPtr = Tcl_FindHashEntry(&importNsPtr->cmdTable, simplePattern);
+	if (hPtr == NULL) {
+	    return TCL_OK;
+	}
+	return DoImport(interp, nsPtr, hPtr, simplePattern, pattern,
+		importNsPtr, allowOverwrite);
+    }
     for (hPtr = Tcl_FirstHashEntry(&importNsPtr->cmdTable, &search);
-	    (hPtr != NULL);
-	    hPtr = Tcl_NextHashEntry(&search)) {
-        cmdName = Tcl_GetHashKey(&importNsPtr->cmdTable, hPtr);
-        if (Tcl_StringMatch(cmdName, simplePattern)) {
-	    /*
-	     * The command cmdName in the source namespace matches the
-	     * pattern. Check whether it was exported. If it wasn't,
-	     * we ignore it.
-	     */
-	    Tcl_HashEntry *found;
+	    (hPtr != NULL); hPtr = Tcl_NextHashEntry(&search)) {
+	char *cmdName = Tcl_GetHashKey(&importNsPtr->cmdTable, hPtr);
+	if (Tcl_StringMatch(cmdName, simplePattern) &&
+		DoImport(interp, nsPtr, hPtr, cmdName, pattern, importNsPtr,
+		allowOverwrite) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DoImport --
+ *
+ *	Import a particular command from one namespace into another. Helper
+ *	for Tcl_Import().
+ *
+ * Results:
+ *	Standard Tcl result code. If TCL_ERROR, appends an error message to
+ *	the interpreter result.
+ *
+ * Side effects:
+ *	A new command is created in the target namespace unless this is a
+ *	reimport of exactly the same command as before.
+ *
+ *----------------------------------------------------------------------
+ */
 
-	    wasExported = 0;
-	    for (i = 0;  i < importNsPtr->numExportPatterns;  i++) {
-		if (Tcl_StringMatch(cmdName,
-			importNsPtr->exportArrayPtr[i])) {
-		    wasExported = 1;
-		    break;
-		}
-	    }
-	    if (!wasExported) {
-		continue;
-            }
+static int
+DoImport(
+    Tcl_Interp *interp,
+    Namespace *nsPtr,
+    Tcl_HashEntry *hPtr,
+    const char *cmdName,
+    const char *pattern,
+    Namespace *importNsPtr,
+    int allowOverwrite)
+{
+    int i = 0, exported = 0;
+    Tcl_HashEntry *found;
 
-	    /*
-	     * Unless there is a name clash, create an imported command
-	     * in the current namespace that refers to cmdPtr.
-	     */
+    /*
+     * The command cmdName in the source namespace matches the pattern. Check
+     * whether it was exported. If it wasn't, we ignore it.
+     */
 
-	    found = Tcl_FindHashEntry(&nsPtr->cmdTable, cmdName);
-	    if ((found == NULL) || allowOverwrite) {
-		/*
-		 * Create the imported command and its client data.
-		 * To create the new command in the current namespace, 
-		 * generate a fully qualified name for it.
-		 */
+    while (!exported && (i < importNsPtr->numExportPatterns)) {
+	exported |= Tcl_StringMatch(cmdName, importNsPtr->exportArrayPtr[i++]);
+    }
+    if (!exported) {
+	return TCL_OK;
+    }
 
-		Tcl_DString ds;
+    /*
+     * Unless there is a name clash, create an imported command in the current
+     * namespace that refers to cmdPtr.
+     */
 
-		Tcl_DStringInit(&ds);
-		Tcl_DStringAppend(&ds, nsPtr->fullName, -1);
-		if (nsPtr != iPtr->globalNsPtr) {
-		    Tcl_DStringAppend(&ds, "::", 2);
-		}
-		Tcl_DStringAppend(&ds, cmdName, -1);
+    found = Tcl_FindHashEntry(&nsPtr->cmdTable, cmdName);
+    if ((found == NULL) || allowOverwrite) {
+	/*
+	 * Create the imported command and its client data. To create the new
+	 * command in the current namespace, generate a fully qualified name
+	 * for it.
+	 */
 
-		/*
-		 * Check whether creating the new imported command in the
-		 * current namespace would create a cycle of imported
-		 * command references.
-		 */
+	Tcl_DString ds;
+	Tcl_Command importedCmd;
+	ImportedCmdData *dataPtr;
+	Command *cmdPtr;
+	ImportRef *refPtr;
 
-		cmdPtr = (Command *) Tcl_GetHashValue(hPtr);
-		if ((found != NULL)
-			&& cmdPtr->deleteProc == DeleteImportedCmd) {
-
-		    Command *overwrite = (Command *) Tcl_GetHashValue(found);
-		    Command *link = cmdPtr;
-		    while (link->deleteProc == DeleteImportedCmd) {
-			ImportedCmdData *dataPtr;
-		       
-			dataPtr = (ImportedCmdData *) link->objClientData;
-			link = dataPtr->realCmdPtr;
-			if (overwrite == link) {
-			    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-				    "import pattern \"", pattern,
-				    "\" would create a loop containing ",
-				    "command \"", Tcl_DStringValue(&ds),
-				    "\"", (char *) NULL);
-			    Tcl_DStringFree(&ds);
-			    return TCL_ERROR;
-			}
-		    }
+	Tcl_DStringInit(&ds);
+	Tcl_DStringAppend(&ds, nsPtr->fullName, -1);
+	if (nsPtr != ((Interp *) interp)->globalNsPtr) {
+	    Tcl_DStringAppend(&ds, "::", 2);
+	}
+	Tcl_DStringAppend(&ds, cmdName, -1);
+
+	/*
+	 * Check whether creating the new imported command in the current
+	 * namespace would create a cycle of imported command references.
+	 */
+
+	cmdPtr = Tcl_GetHashValue(hPtr);
+	if (found != NULL && cmdPtr->deleteProc == DeleteImportedCmd) {
+	    Command *overwrite = Tcl_GetHashValue(found);
+	    Command *link = cmdPtr;
+
+	    while (link->deleteProc == DeleteImportedCmd) {
+		ImportedCmdData *dataPtr = link->objClientData;
+
+		link = dataPtr->realCmdPtr;
+		if (overwrite == link) {
+		    Tcl_AppendResult(interp, "import pattern \"", pattern,
+			    "\" would create a loop containing command \"",
+			    Tcl_DStringValue(&ds), "\"", NULL);
+		    Tcl_DStringFree(&ds);
+		    return TCL_ERROR;
 		}
+	    }
+	}
+
+	dataPtr = (ImportedCmdData *) ckalloc(sizeof(ImportedCmdData));
+	importedCmd = Tcl_CreateObjCommand(interp, Tcl_DStringValue(&ds),
+		InvokeImportedCmd, dataPtr, DeleteImportedCmd);
+	dataPtr->realCmdPtr = cmdPtr;
+	dataPtr->selfPtr = (Command *) importedCmd;
+	dataPtr->selfPtr->compileProc = cmdPtr->compileProc;
+	Tcl_DStringFree(&ds);
+
+	/*
+	 * Create an ImportRef structure describing this new import command
+	 * and add it to the import ref list in the "real" command.
+	 */
+
+	refPtr = (ImportRef *) ckalloc(sizeof(ImportRef));
+	refPtr->importedCmdPtr = (Command *) importedCmd;
+	refPtr->nextPtr = cmdPtr->importRefPtr;
+	cmdPtr->importRefPtr = refPtr;
+    } else {
+	Command *overwrite = Tcl_GetHashValue(found);
 
-		dataPtr = (ImportedCmdData *)
-		        ckalloc(sizeof(ImportedCmdData));
-                importedCmd = Tcl_CreateObjCommand(interp, 
-                        Tcl_DStringValue(&ds), InvokeImportedCmd,
-                        (ClientData) dataPtr, DeleteImportedCmd);
-		dataPtr->realCmdPtr = cmdPtr;
-		dataPtr->selfPtr = (Command *) importedCmd;
-		dataPtr->selfPtr->compileProc = cmdPtr->compileProc;
-		Tcl_DStringFree(&ds);
+	if (overwrite->deleteProc == DeleteImportedCmd) {
+	    ImportedCmdData *dataPtr = overwrite->objClientData;
 
+	    if (dataPtr->realCmdPtr == Tcl_GetHashValue(hPtr)) {
 		/*
-		 * Create an ImportRef structure describing this new import
-		 * command and add it to the import ref list in the "real"
-		 * command.
+		 * Repeated import of same command is acceptable.
 		 */
 
-                refPtr = (ImportRef *) ckalloc(sizeof(ImportRef));
-                refPtr->importedCmdPtr = (Command *) importedCmd;
-                refPtr->nextPtr = cmdPtr->importRefPtr;
-                cmdPtr->importRefPtr = refPtr;
-            } else {
-		Command *overwrite = (Command *) Tcl_GetHashValue(found);
-		if (overwrite->deleteProc == DeleteImportedCmd) {
-		    ImportedCmdData *dataPtr =
-			    (ImportedCmdData *) overwrite->objClientData;
-		    if (dataPtr->realCmdPtr
-			    == (Command *) Tcl_GetHashValue(hPtr)) {
-			/* Repeated import of same command -- acceptable */
-			return TCL_OK;
-		    }
-		}
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		        "can't import command \"", cmdName,
-			"\": already exists", (char *) NULL);
-                return TCL_ERROR;
-            }
-        }
+		return TCL_OK;
+	    }
+	}
+	Tcl_AppendResult(interp, "can't import command \"", cmdName,
+		"\": already exists", NULL);
+	return TCL_ERROR;
     }
     return TCL_OK;
 }
@@ -1307,40 +1675,39 @@ Tcl_Import(interp, namespacePtr, pattern, allowOverwrite)
  *
  * Tcl_ForgetImport --
  *
- *	Deletes commands previously imported into the namespace indicated.  The
- *	by namespacePtr, or the current namespace of interp, when
- *	namespacePtr is NULL.  The pattern controls which imported commands
- *	are deleted.  A simple pattern, one without namespace separators,
- *	matches the current command names of imported commands in the
- *	namespace.  Matching imported commands are deleted.  A qualified
- *	pattern is interpreted as deletion selection on the basis of where
- *	the command is imported from.  The original command and "first link"
- *	command for each imported command are determined, and they are matched
- *	against the pattern.  A match leads to deletion of the imported
- *	command.
+ *	Deletes commands previously imported into the namespace indicated.
+ *	The by namespacePtr, or the current namespace of interp, when
+ *	namespacePtr is NULL. The pattern controls which imported commands are
+ *	deleted. A simple pattern, one without namespace separators, matches
+ *	the current command names of imported commands in the namespace.
+ *	Matching imported commands are deleted. A qualified pattern is
+ *	interpreted as deletion selection on the basis of where the command is
+ *	imported from. The original command and "first link" command for each
+ *	imported command are determined, and they are matched against the
+ *	pattern. A match leads to deletion of the imported command.
  *
  * Results:
- * 	Returns TCL_ERROR and records an error message in the interp
- * 	result if a namespace qualified pattern refers to a namespace
- * 	that does not exist.  Otherwise, returns TCL_OK.
+ *	Returns TCL_ERROR and records an error message in the interp result if
+ *	a namespace qualified pattern refers to a namespace that does not
+ *	exist. Otherwise, returns TCL_OK.
  *
  * Side effects:
- *	May delete commands. 
+ *	May delete commands.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ForgetImport(interp, namespacePtr, pattern)
-    Tcl_Interp *interp;		 /* Current interpreter. */
-    Tcl_Namespace *namespacePtr; /* Points to the namespace from which
-				  * previously imported commands should be
-				  * removed. NULL for current namespace. */
-    CONST char *pattern;	 /* String pattern indicating which imported
-				  * commands to remove. */
+Tcl_ForgetImport(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Namespace *namespacePtr,/* Points to the namespace from which
+				 * previously imported commands should be
+				 * removed. NULL for current namespace. */
+    const char *pattern)	/* String pattern indicating which imported
+				 * commands to remove. */
 {
     Namespace *nsPtr, *sourceNsPtr, *dummyPtr;
-    CONST char *simplePattern;
+    const char *simplePattern;
     char *cmdName;
     register Tcl_HashEntry *hPtr;
     Tcl_HashSearch search;
@@ -1350,36 +1717,47 @@ Tcl_ForgetImport(interp, namespacePtr, pattern)
      */
 
     if (namespacePtr == NULL) {
-        nsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+	nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     } else {
-        nsPtr = (Namespace *) namespacePtr;
+	nsPtr = (Namespace *) namespacePtr;
     }
 
     /*
-     * Parse the pattern into its namespace-qualification (if any)
-     * and the simple pattern.
+     * Parse the pattern into its namespace-qualification (if any) and the
+     * simple pattern.
      */
 
     TclGetNamespaceForQualName(interp, pattern, nsPtr, TCL_NAMESPACE_ONLY,
 	    &sourceNsPtr, &dummyPtr, &dummyPtr, &simplePattern);
 
     if (sourceNsPtr == NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
+	Tcl_AppendResult(interp,
 		"unknown namespace in namespace forget pattern \"",
-		pattern, "\"", (char *) NULL);
-        return TCL_ERROR;
+		pattern, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", pattern, NULL);
+	return TCL_ERROR;
     }
 
     if (strcmp(pattern, simplePattern) == 0) {
 	/*
-	 * The pattern is simple.
-	 * Delete any imported commands that match it.
+	 * The pattern is simple. Delete any imported commands that match it.
 	 */
 
+	if (TclMatchIsTrivial(simplePattern)) {
+	    Command *cmdPtr;
+
+	    hPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern);
+	    if ((hPtr != NULL)
+		    && (cmdPtr = Tcl_GetHashValue(hPtr))
+		    && (cmdPtr->deleteProc == DeleteImportedCmd)) {
+		Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr);
+	    }
+	    return TCL_OK;
+	}
 	for (hPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
-		(hPtr != NULL);
-		hPtr = Tcl_NextHashEntry(&search)) {
-	    Command *cmdPtr = (Command *) Tcl_GetHashValue(hPtr);
+		(hPtr != NULL); hPtr = Tcl_NextHashEntry(&search)) {
+	    Command *cmdPtr = Tcl_GetHashValue(hPtr);
+
 	    if (cmdPtr->deleteProc != DeleteImportedCmd) {
 		continue;
 	    }
@@ -1391,26 +1769,29 @@ Tcl_ForgetImport(interp, namespacePtr, pattern)
 	return TCL_OK;
     }
 
-    /* The pattern was namespace-qualified */
+    /*
+     * The pattern was namespace-qualified.
+     */
 
     for (hPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); (hPtr != NULL);
 	    hPtr = Tcl_NextHashEntry(&search)) {
 	Tcl_CmdInfo info;
-	Tcl_Command token = (Tcl_Command) Tcl_GetHashValue(hPtr);
+	Tcl_Command token = Tcl_GetHashValue(hPtr);
 	Tcl_Command origin = TclGetOriginalCommand(token);
 
 	if (Tcl_GetCommandInfoFromToken(origin, &info) == 0) {
-	    continue;	/* Not an imported command */
+	    continue;			/* Not an imported command. */
 	}
 	if (info.namespacePtr != (Tcl_Namespace *) sourceNsPtr) {
 	    /*
-	     * Original not in namespace we're matching.
-	     * Check the first link in the import chain.
+	     * Original not in namespace we're matching. Check the first link
+	     * in the import chain.
 	     */
+
 	    Command *cmdPtr = (Command *) token;
-	    ImportedCmdData *dataPtr =
-		    (ImportedCmdData *) cmdPtr->objClientData;
+	    ImportedCmdData *dataPtr = cmdPtr->objClientData;
 	    Tcl_Command firstToken = (Tcl_Command) dataPtr->realCmdPtr;
+
 	    if (firstToken == origin) {
 		continue;
 	    }
@@ -1434,15 +1815,15 @@ Tcl_ForgetImport(interp, namespacePtr, pattern)
  *
  *	An imported command is created in an namespace when a "real" command
  *	is imported from another namespace. If the specified command is an
- *	imported command, this procedure returns the original command it
- *	refers to. 
+ *	imported command, this function returns the original command it refers
+ *	to.
  *
  * Results:
  *	If the command was imported into a sequence of namespaces a, b,...,n
  *	where each successive namespace just imports the command from the
- *	previous namespace, this procedure returns the Tcl_Command token in
- *	the first namespace, a. Otherwise, if the specified command is not
- *	an imported command, the procedure returns NULL.
+ *	previous namespace, this function returns the Tcl_Command token in the
+ *	first namespace, a. Otherwise, if the specified command is not an
+ *	imported command, the function returns NULL.
  *
  * Side effects:
  *	None.
@@ -1451,19 +1832,19 @@ Tcl_ForgetImport(interp, namespacePtr, pattern)
  */
 
 Tcl_Command
-TclGetOriginalCommand(command)
-    Tcl_Command command;	/* The imported command for which the
-				 * original command should be returned. */
+TclGetOriginalCommand(
+    Tcl_Command command)	/* The imported command for which the original
+				 * command should be returned. */
 {
     register Command *cmdPtr = (Command *) command;
     ImportedCmdData *dataPtr;
 
     if (cmdPtr->deleteProc != DeleteImportedCmd) {
-	return (Tcl_Command) NULL;
+	return NULL;
     }
-    
+
     while (cmdPtr->deleteProc == DeleteImportedCmd) {
-	dataPtr = (ImportedCmdData *) cmdPtr->objClientData;
+	dataPtr = cmdPtr->objClientData;
 	cmdPtr = dataPtr->realCmdPtr;
     }
     return (Tcl_Command) cmdPtr;
@@ -1474,33 +1855,33 @@ TclGetOriginalCommand(command)
  *
  * InvokeImportedCmd --
  *
- *	Invoked by Tcl whenever the user calls an imported command that
- *	was created by Tcl_Import. Finds the "real" command (in another
+ *	Invoked by Tcl whenever the user calls an imported command that was
+ *	created by Tcl_Import. Finds the "real" command (in another
  *	namespace), and passes control to it.
  *
  * Results:
- *	Returns TCL_OK if successful, and  TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result object is set to an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result object is set to an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-InvokeImportedCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Points to the imported command's
+InvokeImportedCmd(
+    ClientData clientData,	/* Points to the imported command's
 				 * ImportedCmdData structure. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
-    register ImportedCmdData *dataPtr = (ImportedCmdData *) clientData;
+    register ImportedCmdData *dataPtr = clientData;
     register Command *realCmdPtr = dataPtr->realCmdPtr;
 
     return (*realCmdPtr->objProc)(realCmdPtr->objClientData, interp,
-            objc, objv);
+	    objc, objv);
 }
 
 /*
@@ -1509,11 +1890,11 @@ InvokeImportedCmd(clientData, interp, objc, objv)
  * DeleteImportedCmd --
  *
  *	Invoked by Tcl whenever an imported command is deleted. The "real"
- *	command keeps a list of all the imported commands that refer to it,
- *	so those imported commands can be deleted when the real command is
- *	deleted. This procedure removes the imported command reference from
- *	the real command's list, and frees up the memory associated with
- *	the imported command.
+ *	command keeps a list of all the imported commands that refer to it, so
+ *	those imported commands can be deleted when the real command is
+ *	deleted. This function removes the imported command reference from the
+ *	real command's list, and frees up the memory associated with the
+ *	imported command.
  *
  * Results:
  *	None.
@@ -1525,25 +1906,25 @@ InvokeImportedCmd(clientData, interp, objc, objv)
  */
 
 static void
-DeleteImportedCmd(clientData)
-    ClientData clientData;	/* Points to the imported command's
+DeleteImportedCmd(
+    ClientData clientData)	/* Points to the imported command's
 				 * ImportedCmdData structure. */
 {
-    ImportedCmdData *dataPtr = (ImportedCmdData *) clientData;
+    ImportedCmdData *dataPtr = clientData;
     Command *realCmdPtr = dataPtr->realCmdPtr;
     Command *selfPtr = dataPtr->selfPtr;
     register ImportRef *refPtr, *prevPtr;
 
     prevPtr = NULL;
-    for (refPtr = realCmdPtr->importRefPtr;  refPtr != NULL;
-            refPtr = refPtr->nextPtr) {
+    for (refPtr = realCmdPtr->importRefPtr; refPtr != NULL;
+	    refPtr = refPtr->nextPtr) {
 	if (refPtr->importedCmdPtr == selfPtr) {
 	    /*
 	     * Remove *refPtr from real command's list of imported commands
 	     * that refer to it.
 	     */
-	    
-	    if (prevPtr == NULL) { /* refPtr is first in list */
+
+	    if (prevPtr == NULL) { /* refPtr is first in list. */
 		realCmdPtr->importRefPtr = refPtr->nextPtr;
 	    } else {
 		prevPtr->nextPtr = refPtr->nextPtr;
@@ -1554,8 +1935,8 @@ DeleteImportedCmd(clientData)
 	}
 	prevPtr = refPtr;
     }
-	
-    panic("DeleteImportedCmd: did not find cmd in real cmd's list of import references");
+
+    Tcl_Panic("DeleteImportedCmd: did not find cmd in real cmd's list of import references");
 }
 
 /*
@@ -1564,162 +1945,157 @@ DeleteImportedCmd(clientData)
  * TclGetNamespaceForQualName --
  *
  *	Given a qualified name specifying a command, variable, or namespace,
- *	and a namespace in which to resolve the name, this procedure returns
- *	a pointer to the namespace that contains the item. A qualified name
- *	consists of the "simple" name of an item qualified by the names of
- *	an arbitrary number of containing namespace separated by "::"s. If
- *	the qualified name starts with "::", it is interpreted absolutely
- *	from the global namespace. Otherwise, it is interpreted relative to
- *	the namespace specified by cxtNsPtr if it is non-NULL. If cxtNsPtr
- *	is NULL, the name is interpreted relative to the current namespace.
- *
- *	A relative name like "foo::bar::x" can be found starting in either
- *	the current namespace or in the global namespace. So each search
- *	usually follows two tracks, and two possible namespaces are
- *	returned. If the procedure sets either *nsPtrPtr or *altNsPtrPtr to
- *	NULL, then that path failed.
+ *	and a namespace in which to resolve the name, this function returns a
+ *	pointer to the namespace that contains the item. A qualified name
+ *	consists of the "simple" name of an item qualified by the names of an
+ *	arbitrary number of containing namespace separated by "::"s. If the
+ *	qualified name starts with "::", it is interpreted absolutely from the
+ *	global namespace. Otherwise, it is interpreted relative to the
+ *	namespace specified by cxtNsPtr if it is non-NULL. If cxtNsPtr is
+ *	NULL, the name is interpreted relative to the current namespace.
+ *
+ *	A relative name like "foo::bar::x" can be found starting in either the
+ *	current namespace or in the global namespace. So each search usually
+ *	follows two tracks, and two possible namespaces are returned. If the
+ *	function sets either *nsPtrPtr or *altNsPtrPtr to NULL, then that path
+ *	failed.
  *
  *	If "flags" contains TCL_GLOBAL_ONLY, the relative qualified name is
- *	sought only in the global :: namespace. The alternate search
- *	(also) starting from the global namespace is ignored and
- *	*altNsPtrPtr is set NULL. 
- *
- *	If "flags" contains TCL_NAMESPACE_ONLY, the relative qualified
- *	name is sought only in the namespace specified by cxtNsPtr. The
- *	alternate search starting from the global namespace is ignored and
- *	*altNsPtrPtr is set NULL. If both TCL_GLOBAL_ONLY and
- *	TCL_NAMESPACE_ONLY are specified, TCL_GLOBAL_ONLY is ignored and
- *	the search starts from the namespace specified by cxtNsPtr.
- *
- *	If "flags" contains CREATE_NS_IF_UNKNOWN, all namespace
- *	components of the qualified name that cannot be found are
- *	automatically created within their specified parent. This makes sure
- *	that functions like Tcl_CreateCommand always succeed. There is no
- *	alternate search path, so *altNsPtrPtr is set NULL.
- *
- *	If "flags" contains FIND_ONLY_NS, the qualified name is treated as a
- *	reference to a namespace, and the entire qualified name is
- *	followed. If the name is relative, the namespace is looked up only
- *	in the current namespace. A pointer to the namespace is stored in
- *	*nsPtrPtr and NULL is stored in *simpleNamePtr. Otherwise, if
- *	FIND_ONLY_NS is not specified, only the leading components are
- *	treated as namespace names, and a pointer to the simple name of the
- *	final component is stored in *simpleNamePtr.
+ *	sought only in the global :: namespace. The alternate search (also)
+ *	starting from the global namespace is ignored and *altNsPtrPtr is set
+ *	NULL.
+ *
+ *	If "flags" contains TCL_NAMESPACE_ONLY, the relative qualified name is
+ *	sought only in the namespace specified by cxtNsPtr. The alternate
+ *	search starting from the global namespace is ignored and *altNsPtrPtr
+ *	is set NULL. If both TCL_GLOBAL_ONLY and TCL_NAMESPACE_ONLY are
+ *	specified, TCL_GLOBAL_ONLY is ignored and the search starts from the
+ *	namespace specified by cxtNsPtr.
+ *
+ *	If "flags" contains TCL_CREATE_NS_IF_UNKNOWN, all namespace components
+ *	of the qualified name that cannot be found are automatically created
+ *	within their specified parent. This makes sure that functions like
+ *	Tcl_CreateCommand always succeed. There is no alternate search path,
+ *	so *altNsPtrPtr is set NULL.
+ *
+ *	If "flags" contains TCL_FIND_ONLY_NS, the qualified name is treated as
+ *	a reference to a namespace, and the entire qualified name is followed.
+ *	If the name is relative, the namespace is looked up only in the
+ *	current namespace. A pointer to the namespace is stored in *nsPtrPtr
+ *	and NULL is stored in *simpleNamePtr. Otherwise, if TCL_FIND_ONLY_NS
+ *	is not specified, only the leading components are treated as namespace
+ *	names, and a pointer to the simple name of the final component is
+ *	stored in *simpleNamePtr.
  *
  * Results:
  *	It sets *nsPtrPtr and *altNsPtrPtr to point to the two possible
  *	namespaces which represent the last (containing) namespace in the
- *	qualified name. If the procedure sets either *nsPtrPtr or *altNsPtrPtr
- *	to NULL, then the search along that path failed.  The procedure also
+ *	qualified name. If the function sets either *nsPtrPtr or *altNsPtrPtr
+ *	to NULL, then the search along that path failed. The function also
  *	stores a pointer to the simple name of the final component in
  *	*simpleNamePtr. If the qualified name is "::" or was treated as a
- *	namespace reference (FIND_ONLY_NS), the procedure stores a pointer
+ *	namespace reference (TCL_FIND_ONLY_NS), the function stores a pointer
  *	to the namespace in *nsPtrPtr, NULL in *altNsPtrPtr, and sets
  *	*simpleNamePtr to point to an empty string.
  *
- *	If there is an error, this procedure returns TCL_ERROR. If "flags"
+ *	If there is an error, this function returns TCL_ERROR. If "flags"
  *	contains TCL_LEAVE_ERR_MSG, an error message is returned in the
  *	interpreter's result object. Otherwise, the interpreter's result
  *	object is left unchanged.
  *
- *	*actualCxtPtrPtr is set to the actual context namespace. It is
- *	set to the input context namespace pointer in cxtNsPtr. If cxtNsPtr
- *	is NULL, it is set to the current namespace context.
+ *	*actualCxtPtrPtr is set to the actual context namespace. It is set to
+ *	the input context namespace pointer in cxtNsPtr. If cxtNsPtr is NULL,
+ *	it is set to the current namespace context.
  *
- *	For backwards compatibility with the TclPro byte code loader,
- *	this function always returns TCL_OK.
+ *	For backwards compatibility with the TclPro byte code loader, this
+ *	function always returns TCL_OK.
  *
  * Side effects:
- *	If "flags" contains CREATE_NS_IF_UNKNOWN, new namespaces may be
+ *	If "flags" contains TCL_CREATE_NS_IF_UNKNOWN, new namespaces may be
  *	created.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
-	nsPtrPtr, altNsPtrPtr, actualCxtPtrPtr, simpleNamePtr)
-    Tcl_Interp *interp;		 /* Interpreter in which to find the
-				  * namespace containing qualName. */
-    CONST char *qualName;	 /* A namespace-qualified name of an
-				  * command, variable, or namespace. */
-    Namespace *cxtNsPtr;	 /* The namespace in which to start the
-				  * search for qualName's namespace. If NULL
-				  * start from the current namespace.
-				  * Ignored if TCL_GLOBAL_ONLY is set. */
-    int flags;			 /* Flags controlling the search: an OR'd
-				  * combination of TCL_GLOBAL_ONLY,
-				  * TCL_NAMESPACE_ONLY,
-				  * CREATE_NS_IF_UNKNOWN, and
-				  * FIND_ONLY_NS. */
-    Namespace **nsPtrPtr;	 /* Address where procedure stores a pointer
-				  * to containing namespace if qualName is
-				  * found starting from *cxtNsPtr or, if
-				  * TCL_GLOBAL_ONLY is set, if qualName is
-				  * found in the global :: namespace. NULL
-				  * is stored otherwise. */
-    Namespace **altNsPtrPtr;	 /* Address where procedure stores a pointer
-				  * to containing namespace if qualName is
-				  * found starting from the global ::
-				  * namespace. NULL is stored if qualName
-				  * isn't found starting from :: or if the
-				  * TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
-				  * CREATE_NS_IF_UNKNOWN, FIND_ONLY_NS flag
-				  * is set. */
-    Namespace **actualCxtPtrPtr; /* Address where procedure stores a pointer
-				  * to the actual namespace from which the
-				  * search started. This is either cxtNsPtr,
-				  * the :: namespace if TCL_GLOBAL_ONLY was
-				  * specified, or the current namespace if
-				  * cxtNsPtr was NULL. */
-    CONST char **simpleNamePtr;	 /* Address where procedure stores the
-				  * simple name at end of the qualName, or
-				  * NULL if qualName is "::" or the flag
-				  * FIND_ONLY_NS was specified. */
+TclGetNamespaceForQualName(
+    Tcl_Interp *interp,		/* Interpreter in which to find the namespace
+				 * containing qualName. */
+    const char *qualName,	/* A namespace-qualified name of an command,
+				 * variable, or namespace. */
+    Namespace *cxtNsPtr,	/* The namespace in which to start the search
+				 * for qualName's namespace. If NULL start
+				 * from the current namespace. Ignored if
+				 * TCL_GLOBAL_ONLY is set. */
+    int flags,			/* Flags controlling the search: an OR'd
+				 * combination of TCL_GLOBAL_ONLY,
+				 * TCL_NAMESPACE_ONLY, TCL_FIND_ONLY_NS, and
+				 * TCL_CREATE_NS_IF_UNKNOWN. */
+    Namespace **nsPtrPtr,	/* Address where function stores a pointer to
+				 * containing namespace if qualName is found
+				 * starting from *cxtNsPtr or, if
+				 * TCL_GLOBAL_ONLY is set, if qualName is
+				 * found in the global :: namespace. NULL is
+				 * stored otherwise. */
+    Namespace **altNsPtrPtr,	/* Address where function stores a pointer to
+				 * containing namespace if qualName is found
+				 * starting from the global :: namespace.
+				 * NULL is stored if qualName isn't found
+				 * starting from :: or if the TCL_GLOBAL_ONLY,
+				 * TCL_NAMESPACE_ONLY, TCL_FIND_ONLY_NS,
+				 * TCL_CREATE_NS_IF_UNKNOWN flag is set. */
+    Namespace **actualCxtPtrPtr,/* Address where function stores a pointer to
+				 * the actual namespace from which the search
+				 * started. This is either cxtNsPtr, the ::
+				 * namespace if TCL_GLOBAL_ONLY was specified,
+				 * or the current namespace if cxtNsPtr was
+				 * NULL. */
+    const char **simpleNamePtr) /* Address where function stores the simple
+				 * name at end of the qualName, or NULL if
+				 * qualName is "::" or the flag
+				 * TCL_FIND_ONLY_NS was specified. */
 {
     Interp *iPtr = (Interp *) interp;
     Namespace *nsPtr = cxtNsPtr;
     Namespace *altNsPtr;
     Namespace *globalNsPtr = iPtr->globalNsPtr;
-    CONST char *start, *end;
-    CONST char *nsName;
+    const char *start, *end;
+    const char *nsName;
     Tcl_HashEntry *entryPtr;
     Tcl_DString buffer;
     int len;
 
     /*
      * Determine the context namespace nsPtr in which to start the primary
-     * search.  If the qualName name starts with a "::" or TCL_GLOBAL_ONLY
-     * was specified, search from the global namespace. Otherwise, use the
+     * search. If the qualName name starts with a "::" or TCL_GLOBAL_ONLY was
+     * specified, search from the global namespace. Otherwise, use the
      * namespace given in cxtNsPtr, or if that is NULL, use the current
-     * namespace context. Note that we always treat two or more
-     * adjacent ":"s as a namespace separator.
+     * namespace context. Note that we always treat two or more adjacent ":"s
+     * as a namespace separator.
      */
 
     if (flags & TCL_GLOBAL_ONLY) {
 	nsPtr = globalNsPtr;
     } else if (nsPtr == NULL) {
-	if (iPtr->varFramePtr != NULL) {
-	    nsPtr = iPtr->varFramePtr->nsPtr;
-	} else {
-	    nsPtr = iPtr->globalNsPtr;
-	}
+	nsPtr = iPtr->varFramePtr->nsPtr;
     }
 
-    start = qualName;		/* pts to start of qualifying namespace */
+    start = qualName;			/* Points to start of qualifying
+					 * namespace. */
     if ((*qualName == ':') && (*(qualName+1) == ':')) {
-	start = qualName+2;	/* skip over the initial :: */
+	start = qualName+2;		/* Skip over the initial :: */
 	while (*start == ':') {
-            start++;		/* skip over a subsequent : */
+	    start++;			/* Skip over a subsequent : */
 	}
-        nsPtr = globalNsPtr;
-        if (*start == '\0') {	/* qualName is just two or more ":"s */
-            *nsPtrPtr        = globalNsPtr;
-            *altNsPtrPtr     = NULL;
+	nsPtr = globalNsPtr;
+	if (*start == '\0') {		/* qualName is just two or more
+					 * ":"s. */
+	    *nsPtrPtr = globalNsPtr;
+	    *altNsPtrPtr = NULL;
 	    *actualCxtPtrPtr = globalNsPtr;
-            *simpleNamePtr   = start; /* points to empty string */
-            return TCL_OK;
-        }
+	    *simpleNamePtr = start;	/* Points to empty string. */
+	    return TCL_OK;
+	}
     }
     *actualCxtPtrPtr = nsPtr;
 
@@ -1732,8 +2108,8 @@ TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
 
     altNsPtr = globalNsPtr;
     if ((nsPtr == globalNsPtr)
-	    || (flags & (TCL_NAMESPACE_ONLY | FIND_ONLY_NS))) {
-        altNsPtr = NULL;
+	    || (flags & (TCL_NAMESPACE_ONLY | TCL_FIND_ONLY_NS))) {
+	altNsPtr = NULL;
     }
 
     /*
@@ -1743,38 +2119,37 @@ TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
     Tcl_DStringInit(&buffer);
     end = start;
     while (*start != '\0') {
-        /*
-         * Find the next namespace qualifier (i.e., a name ending in "::")
-	 * or the end of the qualified name  (i.e., a name ending in "\0").
-	 * Set len to the number of characters, starting from start,
-	 * in the name; set end to point after the "::"s or at the "\0".
-         */
+	/*
+	 * Find the next namespace qualifier (i.e., a name ending in "::") or
+	 * the end of the qualified name (i.e., a name ending in "\0"). Set
+	 * len to the number of characters, starting from start, in the name;
+	 * set end to point after the "::"s or at the "\0".
+	 */
 
 	len = 0;
-        for (end = start;  *end != '\0';  end++) {
+	for (end = start;  *end != '\0';  end++) {
 	    if ((*end == ':') && (*(end+1) == ':')) {
-		end += 2;	/* skip over the initial :: */
+		end += 2;		/* Skip over the initial :: */
 		while (*end == ':') {
-		    end++;	/* skip over the subsequent : */
+		    end++;		/* Skip over the subsequent : */
 		}
-		break;		/* exit for loop; end is after ::'s */
+		break;			/* Exit for loop; end is after ::'s */
 	    }
-            len++;
+	    len++;
 	}
 
-	if ((*end == '\0')
-	        && !((end-start >= 2) && (*(end-1) == ':') && (*(end-2) == ':'))) {
+	if (*end=='\0' && !(end-start>=2 && *(end-1)==':' && *(end-2)==':')) {
 	    /*
-	     * qualName ended with a simple name at start. If FIND_ONLY_NS
-	     * was specified, look this up as a namespace. Otherwise,
-	     * start is the name of a cmd or var and we are done.
+	     * qualName ended with a simple name at start. If TCL_FIND_ONLY_NS
+	     * was specified, look this up as a namespace. Otherwise, start is
+	     * the name of a cmd or var and we are done.
 	     */
-	    
-	    if (flags & FIND_ONLY_NS) {
+
+	    if (flags & TCL_FIND_ONLY_NS) {
 		nsName = start;
 	    } else {
-		*nsPtrPtr      = nsPtr;
-		*altNsPtrPtr   = altNsPtr;
+		*nsPtrPtr = nsPtr;
+		*altNsPtrPtr = altNsPtr;
 		*simpleNamePtr = start;
 		Tcl_DStringFree(&buffer);
 		return TCL_OK;
@@ -1783,69 +2158,70 @@ TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
 	    /*
 	     * start points to the beginning of a namespace qualifier ending
 	     * in "::". end points to the start of a name in that namespace
-	     * that might be empty. Copy the namespace qualifier to a
-	     * buffer so it can be null terminated. We can't modify the
-	     * incoming qualName since it may be a string constant.
+	     * that might be empty. Copy the namespace qualifier to a buffer
+	     * so it can be null terminated. We can't modify the incoming
+	     * qualName since it may be a string constant.
 	     */
 
 	    Tcl_DStringSetLength(&buffer, 0);
-            Tcl_DStringAppend(&buffer, start, len);
-            nsName = Tcl_DStringValue(&buffer);
-        }
+	    Tcl_DStringAppend(&buffer, start, len);
+	    nsName = Tcl_DStringValue(&buffer);
+	}
 
-        /*
+	/*
 	 * Look up the namespace qualifier nsName in the current namespace
-         * context. If it isn't found but CREATE_NS_IF_UNKNOWN is set,
-         * create that qualifying namespace. This is needed for procedures
-         * like Tcl_CreateCommand that cannot fail.
+	 * context. If it isn't found but TCL_CREATE_NS_IF_UNKNOWN is set,
+	 * create that qualifying namespace. This is needed for functions like
+	 * Tcl_CreateCommand that cannot fail.
+	 */
+
+	if (nsPtr != NULL) {
+	    entryPtr = Tcl_FindHashEntry(&nsPtr->childTable, nsName);
+	    if (entryPtr != NULL) {
+		nsPtr = Tcl_GetHashValue(entryPtr);
+	    } else if (flags & TCL_CREATE_NS_IF_UNKNOWN) {
+		Tcl_CallFrame *framePtr;
+
+		(void) TclPushStackFrame(interp, &framePtr,
+			(Tcl_Namespace *) nsPtr, /*isProcCallFrame*/ 0);
+
+		nsPtr = (Namespace *) Tcl_CreateNamespace(interp, nsName,
+			NULL, NULL);
+		TclPopStackFrame(interp);
+
+		if (nsPtr == NULL) {
+		    Tcl_Panic("Could not create namespace '%s'", nsName);
+		}
+	    } else {			/* Namespace not found and was not
+					 * created. */
+		nsPtr = NULL;
+	    }
+	}
+
+	/*
+	 * Look up the namespace qualifier in the alternate search path too.
 	 */
 
-        if (nsPtr != NULL) {
-            entryPtr = Tcl_FindHashEntry(&nsPtr->childTable, nsName);
-            if (entryPtr != NULL) {
-                nsPtr = (Namespace *) Tcl_GetHashValue(entryPtr);
-            } else if (flags & CREATE_NS_IF_UNKNOWN) {
-		Tcl_CallFrame frame;
-		
-		(void) Tcl_PushCallFrame(interp, &frame,
-		        (Tcl_Namespace *) nsPtr, /*isProcCallFrame*/ 0);
-
-                nsPtr = (Namespace *) Tcl_CreateNamespace(interp, nsName,
-		        (ClientData) NULL, (Tcl_NamespaceDeleteProc *) NULL);
-                Tcl_PopCallFrame(interp);
-
-                if (nsPtr == NULL) {
-                    panic("Could not create namespace '%s'", nsName);
-                }
-            } else {		/* namespace not found and wasn't created */
-                nsPtr = NULL;
-            }
-        }
-
-        /*
-         * Look up the namespace qualifier in the alternate search path too.
-         */
-
-        if (altNsPtr != NULL) {
-            entryPtr = Tcl_FindHashEntry(&altNsPtr->childTable, nsName);
-            if (entryPtr != NULL) {
-                altNsPtr = (Namespace *) Tcl_GetHashValue(entryPtr);
-            } else {
-                altNsPtr = NULL;
-            }
-        }
-
-        /*
-         * If both search paths have failed, return NULL results.
-         */
-
-        if ((nsPtr == NULL) && (altNsPtr == NULL)) {
-            *nsPtrPtr      = NULL;
-            *altNsPtrPtr   = NULL;
-            *simpleNamePtr = NULL;
-            Tcl_DStringFree(&buffer);
-            return TCL_OK;
-        }
+	if (altNsPtr != NULL) {
+	    entryPtr = Tcl_FindHashEntry(&altNsPtr->childTable, nsName);
+	    if (entryPtr != NULL) {
+		altNsPtr = Tcl_GetHashValue(entryPtr);
+	    } else {
+		altNsPtr = NULL;
+	    }
+	}
+
+	/*
+	 * If both search paths have failed, return NULL results.
+	 */
+
+	if ((nsPtr == NULL) && (altNsPtr == NULL)) {
+	    *nsPtrPtr = NULL;
+	    *altNsPtrPtr = NULL;
+	    *simpleNamePtr = NULL;
+	    Tcl_DStringFree(&buffer);
+	    return TCL_OK;
+	}
 
 	start = end;
     }
@@ -1855,26 +2231,26 @@ TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
      * variable name, trailing "::"s refer to the cmd or var named {}.
      */
 
-    if ((flags & FIND_ONLY_NS)
-	    || ((end > start ) && (*(end-1) != ':'))) {
-	*simpleNamePtr = NULL; /* found namespace name */
+    if ((flags & TCL_FIND_ONLY_NS) || (end>start && *(end-1)!=':')) {
+	*simpleNamePtr = NULL;		/* Found namespace name. */
     } else {
-	*simpleNamePtr = end;  /* found cmd/var: points to empty string */
+	*simpleNamePtr = end;		/* Found cmd/var: points to empty
+					 * string. */
     }
 
     /*
-     * As a special case, if we are looking for a namespace and qualName
-     * is "" and the current active namespace (nsPtr) is not the global
-     * namespace, return NULL (no namespace was found). This is because
-     * namespaces can not have empty names except for the global namespace.
+     * As a special case, if we are looking for a namespace and qualName is ""
+     * and the current active namespace (nsPtr) is not the global namespace,
+     * return NULL (no namespace was found). This is because namespaces can
+     * not have empty names except for the global namespace.
      */
 
-    if ((flags & FIND_ONLY_NS) && (*qualName == '\0')
+    if ((flags & TCL_FIND_ONLY_NS) && (*qualName == '\0')
 	    && (nsPtr != globalNsPtr)) {
 	nsPtr = NULL;
     }
 
-    *nsPtrPtr    = nsPtr;
+    *nsPtrPtr = nsPtr;
     *altNsPtrPtr = altNsPtr;
     Tcl_DStringFree(&buffer);
     return TCL_OK;
@@ -1888,9 +2264,9 @@ TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
  *	Searches for a namespace.
  *
  * Results:
- *	Returns a pointer to the namespace if it is found. Otherwise,
- *	returns NULL and leaves an error message in the interpreter's
- *	result object if "flags" contains TCL_LEAVE_ERR_MSG.
+ *	Returns a pointer to the namespace if it is found. Otherwise, returns
+ *	NULL and leaves an error message in the interpreter's result object if
+ *	"flags" contains TCL_LEAVE_ERR_MSG.
  *
  * Side effects:
  *	None.
@@ -1899,41 +2275,41 @@ TclGetNamespaceForQualName(interp, qualName, cxtNsPtr, flags,
  */
 
 Tcl_Namespace *
-Tcl_FindNamespace(interp, name, contextNsPtr, flags)
-    Tcl_Interp *interp;		 /* The interpreter in which to find the
-				  * namespace. */
-    CONST char *name;		 /* Namespace name. If it starts with "::",
-				  * will be looked up in global namespace.
-				  * Else, looked up first in contextNsPtr
-				  * (current namespace if contextNsPtr is
-				  * NULL), then in global namespace. */
-    Tcl_Namespace *contextNsPtr; /* Ignored if TCL_GLOBAL_ONLY flag is set
-				  * or if the name starts with "::".
-				  * Otherwise, points to namespace in which
-				  * to resolve name; if NULL, look up name
-				  * in the current namespace. */
-    register int flags;		 /* Flags controlling namespace lookup: an
-				  * OR'd combination of TCL_GLOBAL_ONLY and
-				  * TCL_LEAVE_ERR_MSG flags. */
+Tcl_FindNamespace(
+    Tcl_Interp *interp,		/* The interpreter in which to find the
+				 * namespace. */
+    const char *name,		/* Namespace name. If it starts with "::",
+				 * will be looked up in global namespace.
+				 * Else, looked up first in contextNsPtr
+				 * (current namespace if contextNsPtr is
+				 * NULL), then in global namespace. */
+    Tcl_Namespace *contextNsPtr,/* Ignored if TCL_GLOBAL_ONLY flag is set or
+				 * if the name starts with "::". Otherwise,
+				 * points to namespace in which to resolve
+				 * name; if NULL, look up name in the current
+				 * namespace. */
+    register int flags)		/* Flags controlling namespace lookup: an OR'd
+				 * combination of TCL_GLOBAL_ONLY and
+				 * TCL_LEAVE_ERR_MSG flags. */
 {
     Namespace *nsPtr, *dummy1Ptr, *dummy2Ptr;
-    CONST char *dummy;
+    const char *dummy;
 
     /*
-     * Find the namespace(s) that contain the specified namespace name.
-     * Add the FIND_ONLY_NS flag to resolve the name all the way down
-     * to its last component, a namespace.
+     * Find the namespace(s) that contain the specified namespace name. Add
+     * the TCL_FIND_ONLY_NS flag to resolve the name all the way down to its
+     * last component, a namespace.
      */
 
     TclGetNamespaceForQualName(interp, name, (Namespace *) contextNsPtr,
-	    (flags | FIND_ONLY_NS), &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy);
-    
+	    flags|TCL_FIND_ONLY_NS, &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy);
+
     if (nsPtr != NULL) {
-       return (Tcl_Namespace *) nsPtr;
+	return (Tcl_Namespace *) nsPtr;
     } else if (flags & TCL_LEAVE_ERR_MSG) {
 	Tcl_ResetResult(interp);
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "unknown namespace \"", name, "\"", (char *) NULL);
+	Tcl_AppendResult(interp, "unknown namespace \"", name, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", name, NULL);
     }
     return NULL;
 }
@@ -1946,10 +2322,10 @@ Tcl_FindNamespace(interp, name, contextNsPtr, flags)
  *	Searches for a command.
  *
  * Results:
- *	Returns a token for the command if it is found. Otherwise, if it
- *	can't be found or there is an error, returns NULL and leaves an
- *	error message in the interpreter's result object if "flags"
- *	contains TCL_LEAVE_ERR_MSG.
+ *	Returns a token for the command if it is found. Otherwise, if it can't
+ *	be found or there is an error, returns NULL and leaves an error
+ *	message in the interpreter's result object if "flags" contains
+ *	TCL_LEAVE_ERR_MSG.
  *
  * Side effects:
  *	None.
@@ -1958,244 +2334,171 @@ Tcl_FindNamespace(interp, name, contextNsPtr, flags)
  */
 
 Tcl_Command
-Tcl_FindCommand(interp, name, contextNsPtr, flags)
-    Tcl_Interp *interp;         /* The interpreter in which to find the
-				  * command and to report errors. */
-    CONST char *name;	         /* Command's name. If it starts with "::",
-				  * will be looked up in global namespace.
-				  * Else, looked up first in contextNsPtr
-				  * (current namespace if contextNsPtr is
-				  * NULL), then in global namespace. */
-    Tcl_Namespace *contextNsPtr; /* Ignored if TCL_GLOBAL_ONLY flag set.
-				  * Otherwise, points to namespace in which
-				  * to resolve name. If NULL, look up name
-				  * in the current namespace. */
-    int flags;                   /* An OR'd combination of flags:
-				  * TCL_GLOBAL_ONLY (look up name only in
-				  * global namespace), TCL_NAMESPACE_ONLY
-				  * (look up only in contextNsPtr, or the
-				  * current namespace if contextNsPtr is
-				  * NULL), and TCL_LEAVE_ERR_MSG. If both
-				  * TCL_GLOBAL_ONLY and TCL_NAMESPACE_ONLY
-				  * are given, TCL_GLOBAL_ONLY is
-				  * ignored. */
-{
-    Interp *iPtr = (Interp*)interp;
-
-    ResolverScheme *resPtr;
-    Namespace *nsPtr[2], *cxtNsPtr;
-    CONST char *simpleName;
+Tcl_FindCommand(
+    Tcl_Interp *interp,		/* The interpreter in which to find the
+				 * command and to report errors. */
+    const char *name,		/* Command's name. If it starts with "::",
+				 * will be looked up in global namespace.
+				 * Else, looked up first in contextNsPtr
+				 * (current namespace if contextNsPtr is
+				 * NULL), then in global namespace. */
+    Tcl_Namespace *contextNsPtr,/* Ignored if TCL_GLOBAL_ONLY flag set.
+				 * Otherwise, points to namespace in which to
+				 * resolve name. If NULL, look up name in the
+				 * current namespace. */
+    int flags)			/* An OR'd combination of flags:
+				 * TCL_GLOBAL_ONLY (look up name only in
+				 * global namespace), TCL_NAMESPACE_ONLY (look
+				 * up only in contextNsPtr, or the current
+				 * namespace if contextNsPtr is NULL), and
+				 * TCL_LEAVE_ERR_MSG. If both TCL_GLOBAL_ONLY
+				 * and TCL_NAMESPACE_ONLY are given,
+				 * TCL_GLOBAL_ONLY is ignored. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Namespace *cxtNsPtr;
     register Tcl_HashEntry *entryPtr;
     register Command *cmdPtr;
-    register int search;
+    const char *simpleName;
     int result;
-    Tcl_Command cmd;
 
     /*
-     * If this namespace has a command resolver, then give it first
-     * crack at the command resolution.  If the interpreter has any
-     * command resolvers, consult them next.  The command resolver
-     * procedures may return a Tcl_Command value, they may signal
-     * to continue onward, or they may signal an error.
+     * If this namespace has a command resolver, then give it first crack at
+     * the command resolution. If the interpreter has any command resolvers,
+     * consult them next. The command resolver functions may return a
+     * Tcl_Command value, they may signal to continue onward, or they may
+     * signal an error.
      */
-    if ((flags & TCL_GLOBAL_ONLY) != 0) {
-        cxtNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
-    }
-    else if (contextNsPtr != NULL) {
-        cxtNsPtr = (Namespace *) contextNsPtr;
-    }
-    else {
-        cxtNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+
+    if ((flags & TCL_GLOBAL_ONLY) || !strncmp(name, "::", 2)) {
+	cxtNsPtr = (Namespace *) TclGetGlobalNamespace(interp);
+    } else if (contextNsPtr != NULL) {
+	cxtNsPtr = (Namespace *) contextNsPtr;
+    } else {
+	cxtNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     }
 
     if (cxtNsPtr->cmdResProc != NULL || iPtr->resolverPtr != NULL) {
-        resPtr = iPtr->resolverPtr;
+	ResolverScheme *resPtr = iPtr->resolverPtr;
+	Tcl_Command cmd;
 
-        if (cxtNsPtr->cmdResProc) {
-            result = (*cxtNsPtr->cmdResProc)(interp, name,
-                (Tcl_Namespace *) cxtNsPtr, flags, &cmd);
-        } else {
-            result = TCL_CONTINUE;
-        }
+	if (cxtNsPtr->cmdResProc) {
+	    result = (*cxtNsPtr->cmdResProc)(interp, name,
+		    (Tcl_Namespace *) cxtNsPtr, flags, &cmd);
+	} else {
+	    result = TCL_CONTINUE;
+	}
 
-        while (result == TCL_CONTINUE && resPtr) {
-            if (resPtr->cmdResProc) {
-                result = (*resPtr->cmdResProc)(interp, name,
-                    (Tcl_Namespace *) cxtNsPtr, flags, &cmd);
-            }
-            resPtr = resPtr->nextPtr;
-        }
+	while (result == TCL_CONTINUE && resPtr) {
+	    if (resPtr->cmdResProc) {
+		result = (*resPtr->cmdResProc)(interp, name,
+			(Tcl_Namespace *) cxtNsPtr, flags, &cmd);
+	    }
+	    resPtr = resPtr->nextPtr;
+	}
 
-        if (result == TCL_OK) {
-            return cmd;
-        }
-        else if (result != TCL_CONTINUE) {
-            return (Tcl_Command) NULL;
-        }
+	if (result == TCL_OK) {
+	    return cmd;
+	} else if (result != TCL_CONTINUE) {
+	    return NULL;
+	}
     }
 
     /*
      * Find the namespace(s) that contain the command.
      */
 
-    TclGetNamespaceForQualName(interp, name, (Namespace *) contextNsPtr,
-	    flags, &nsPtr[0], &nsPtr[1], &cxtNsPtr, &simpleName);
-
-    /*
-     * Look for the command in the command table of its namespace.
-     * Be sure to check both possible search paths: from the specified
-     * namespace context and from the global namespace.
-     */
-
     cmdPtr = NULL;
-    for (search = 0;  (search < 2) && (cmdPtr == NULL);  search++) {
-        if ((nsPtr[search] != NULL) && (simpleName != NULL)) {
-	    entryPtr = Tcl_FindHashEntry(&nsPtr[search]->cmdTable,
-		    simpleName);
-	    if (entryPtr != NULL) {
-		cmdPtr = (Command *) Tcl_GetHashValue(entryPtr);
+    if (cxtNsPtr->commandPathLength!=0 && strncmp(name, "::", 2)
+	    && !(flags & TCL_NAMESPACE_ONLY)) {
+	int i;
+	Namespace *pathNsPtr, *realNsPtr, *dummyNsPtr;
+
+	(void) TclGetNamespaceForQualName(interp, name, cxtNsPtr,
+		TCL_NAMESPACE_ONLY, &realNsPtr, &dummyNsPtr, &dummyNsPtr,
+		&simpleName);
+	if ((realNsPtr != NULL) && (simpleName != NULL)) {
+	    if ((cxtNsPtr == realNsPtr)
+		    || !(realNsPtr->flags & NS_DYING)) {
+		entryPtr = Tcl_FindHashEntry(&realNsPtr->cmdTable, simpleName);
+		if (entryPtr != NULL) {
+		    cmdPtr = Tcl_GetHashValue(entryPtr);
+		}
 	    }
 	}
-    }
-
-    if (cmdPtr != NULL) {
-        return (Tcl_Command) cmdPtr;
-    } else if (flags & TCL_LEAVE_ERR_MSG) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "unknown command \"", name, "\"", (char *) NULL);
-    }
 
-    return (Tcl_Command) NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_FindNamespaceVar --
- *
- *	Searches for a namespace variable, a variable not local to a
- *	procedure. The variable can be either a scalar or an array, but
- *	may not be an element of an array.
- *
- * Results:
- *	Returns a token for the variable if it is found. Otherwise, if it
- *	can't be found or there is an error, returns NULL and leaves an
- *	error message in the interpreter's result object if "flags"
- *	contains TCL_LEAVE_ERR_MSG.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
+	/*
+	 * Next, check along the path.
+	 */
 
-Tcl_Var
-Tcl_FindNamespaceVar(interp, name, contextNsPtr, flags)
-    Tcl_Interp *interp;		 /* The interpreter in which to find the
-				  * variable. */
-    CONST char *name;		 /* Variable's name. If it starts with "::",
-				  * will be looked up in global namespace.
-				  * Else, looked up first in contextNsPtr
-				  * (current namespace if contextNsPtr is
-				  * NULL), then in global namespace. */
-    Tcl_Namespace *contextNsPtr; /* Ignored if TCL_GLOBAL_ONLY flag set.
-				  * Otherwise, points to namespace in which
-				  * to resolve name. If NULL, look up name
-				  * in the current namespace. */
-    int flags;			 /* An OR'd combination of flags:
-				  * TCL_GLOBAL_ONLY (look up name only in
-				  * global namespace), TCL_NAMESPACE_ONLY
-				  * (look up only in contextNsPtr, or the
-				  * current namespace if contextNsPtr is
-				  * NULL), and TCL_LEAVE_ERR_MSG. If both
-				  * TCL_GLOBAL_ONLY and TCL_NAMESPACE_ONLY
-				  * are given, TCL_GLOBAL_ONLY is
-				  * ignored. */
-{
-    Interp *iPtr = (Interp*)interp;
-    ResolverScheme *resPtr;
-    Namespace *nsPtr[2], *cxtNsPtr;
-    CONST char *simpleName;
-    Tcl_HashEntry *entryPtr;
-    Var *varPtr;
-    register int search;
-    int result;
-    Tcl_Var var;
+	for (i=0 ; i<cxtNsPtr->commandPathLength && cmdPtr==NULL ; i++) {
+	    pathNsPtr = cxtNsPtr->commandPathArray[i].nsPtr;
+	    if (pathNsPtr == NULL) {
+		continue;
+	    }
+	    (void) TclGetNamespaceForQualName(interp, name, pathNsPtr,
+		    TCL_NAMESPACE_ONLY, &realNsPtr, &dummyNsPtr, &dummyNsPtr,
+		    &simpleName);
+	    if ((realNsPtr != NULL) && (simpleName != NULL)
+		    && !(realNsPtr->flags & NS_DYING)) {
+		entryPtr = Tcl_FindHashEntry(&realNsPtr->cmdTable, simpleName);
+		if (entryPtr != NULL) {
+		    cmdPtr = Tcl_GetHashValue(entryPtr);
+		}
+	    }
+	}
 
-    /*
-     * If this namespace has a variable resolver, then give it first
-     * crack at the variable resolution.  It may return a Tcl_Var
-     * value, it may signal to continue onward, or it may signal
-     * an error.
-     */
-    if ((flags & TCL_GLOBAL_ONLY) != 0) {
-        cxtNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
-    }
-    else if (contextNsPtr != NULL) {
-        cxtNsPtr = (Namespace *) contextNsPtr;
-    }
-    else {
-        cxtNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    }
+	/*
+	 * If we've still not found the command, look in the global namespace
+	 * as a last resort.
+	 */
 
-    if (cxtNsPtr->varResProc != NULL || iPtr->resolverPtr != NULL) {
-        resPtr = iPtr->resolverPtr;
+	if (cmdPtr == NULL) {
+	    (void) TclGetNamespaceForQualName(interp, name, NULL,
+		    TCL_GLOBAL_ONLY, &realNsPtr, &dummyNsPtr, &dummyNsPtr,
+		    &simpleName);
+	    if ((realNsPtr != NULL) && (simpleName != NULL)
+		    && !(realNsPtr->flags & NS_DYING)) {
+		entryPtr = Tcl_FindHashEntry(&realNsPtr->cmdTable, simpleName);
+		if (entryPtr != NULL) {
+		    cmdPtr = Tcl_GetHashValue(entryPtr);
+		}
+	    }
+	}
+    } else {
+	Namespace *nsPtr[2];
+	register int search;
 
-        if (cxtNsPtr->varResProc) {
-            result = (*cxtNsPtr->varResProc)(interp, name,
-                (Tcl_Namespace *) cxtNsPtr, flags, &var);
-        } else {
-            result = TCL_CONTINUE;
-        }
+	TclGetNamespaceForQualName(interp, name, (Namespace *) contextNsPtr,
+		flags, &nsPtr[0], &nsPtr[1], &cxtNsPtr, &simpleName);
 
-        while (result == TCL_CONTINUE && resPtr) {
-            if (resPtr->varResProc) {
-                result = (*resPtr->varResProc)(interp, name,
-                    (Tcl_Namespace *) cxtNsPtr, flags, &var);
-            }
-            resPtr = resPtr->nextPtr;
-        }
+	/*
+	 * Look for the command in the command table of its namespace. Be sure
+	 * to check both possible search paths: from the specified namespace
+	 * context and from the global namespace.
+	 */
 
-        if (result == TCL_OK) {
-            return var;
-        }
-        else if (result != TCL_CONTINUE) {
-            return (Tcl_Var) NULL;
-        }
+	for (search = 0;  (search < 2) && (cmdPtr == NULL);  search++) {
+	    if ((nsPtr[search] != NULL) && (simpleName != NULL)) {
+		entryPtr = Tcl_FindHashEntry(&nsPtr[search]->cmdTable,
+			simpleName);
+		if (entryPtr != NULL) {
+		    cmdPtr = Tcl_GetHashValue(entryPtr);
+		}
+	    }
+	}
     }
 
-    /*
-     * Find the namespace(s) that contain the variable.
-     */
-
-    TclGetNamespaceForQualName(interp, name, (Namespace *) contextNsPtr,
-	    flags, &nsPtr[0], &nsPtr[1], &cxtNsPtr, &simpleName);
-
-    /*
-     * Look for the variable in the variable table of its namespace.
-     * Be sure to check both possible search paths: from the specified
-     * namespace context and from the global namespace.
-     */
-
-    varPtr = NULL;
-    for (search = 0;  (search < 2) && (varPtr == NULL);  search++) {
-        if ((nsPtr[search] != NULL) && (simpleName != NULL)) {
-            entryPtr = Tcl_FindHashEntry(&nsPtr[search]->varTable,
-		    simpleName);
-            if (entryPtr != NULL) {
-                varPtr = (Var *) Tcl_GetHashValue(entryPtr);
-            }
-        }
+    if (cmdPtr != NULL) {
+	return (Tcl_Command) cmdPtr;
     }
-    if (varPtr != NULL) {
-	return (Tcl_Var) varPtr;
-    } else if (flags & TCL_LEAVE_ERR_MSG) {
+
+    if (flags & TCL_LEAVE_ERR_MSG) {
 	Tcl_ResetResult(interp);
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                "unknown variable \"", name, "\"", (char *) NULL);
+	Tcl_AppendResult(interp, "unknown command \"", name, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND", name, NULL);
     }
-    return (Tcl_Var) NULL;
+    return NULL;
 }
 
 /*
@@ -2207,56 +2510,49 @@ Tcl_FindNamespaceVar(interp, name, contextNsPtr, flags)
  *	command references that the new command may invalidate. Consider the
  *	following cases that could happen when you add a command "foo" to a
  *	namespace "b":
- *	   1. It could shadow a command named "foo" at the global scope.
- *	      If it does, all command references in the namespace "b" are
+ *	   1. It could shadow a command named "foo" at the global scope. If
+ *	      it does, all command references in the namespace "b" are
  *	      suspect.
- *	   2. Suppose the namespace "b" resides in a namespace "a".
- *	      Then to "a" the new command "b::foo" could shadow another
- *	      command "b::foo" in the global namespace. If so, then all
- *	      command references in "a" are suspect.
- *	The same checks are applied to all parent namespaces, until we
- *	reach the global :: namespace.
+ *	   2. Suppose the namespace "b" resides in a namespace "a". Then to
+ *	      "a" the new command "b::foo" could shadow another command
+ *	      "b::foo" in the global namespace. If so, then all command
+ *	      references in "a" * are suspect.
+ *	The same checks are applied to all parent namespaces, until we reach
+ *	the global :: namespace.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	If the new command shadows an existing command, the cmdRefEpoch
- *	counter is incremented in each namespace that sees the shadow.
- *	This invalidates all command references that were previously cached
- *	in that namespace. The next time the commands are used, they are
- *	resolved from scratch.
+ *	counter is incremented in each namespace that sees the shadow. This
+ *	invalidates all command references that were previously cached in that
+ *	namespace. The next time the commands are used, they are resolved from
+ *	scratch.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclResetShadowedCmdRefs(interp, newCmdPtr)
-    Tcl_Interp *interp;	       /* Interpreter containing the new command. */
-    Command *newCmdPtr;	       /* Points to the new command. */
+TclResetShadowedCmdRefs(
+    Tcl_Interp *interp,		/* Interpreter containing the new command. */
+    Command *newCmdPtr)		/* Points to the new command. */
 {
     char *cmdName;
     Tcl_HashEntry *hPtr;
     register Namespace *nsPtr;
     Namespace *trailNsPtr, *shadowNsPtr;
-    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
+    Namespace *globalNsPtr = (Namespace *) TclGetGlobalNamespace(interp);
     int found, i;
-
-    /*
-     * This procedure generates an array used to hold the trail list. This
-     * starts out with stack-allocated space but uses dynamically-allocated
-     * storage if needed.
-     */
-
-    Namespace *(trailStorage[NUM_TRAIL_ELEMS]);
-    Namespace **trailPtr = trailStorage;
     int trailFront = -1;
-    int trailSize = NUM_TRAIL_ELEMS;
+    int trailSize = 5;		/* Formerly NUM_TRAIL_ELEMS. */
+    Namespace **trailPtr = (Namespace **)
+	    TclStackAlloc(interp, trailSize * sizeof(Namespace *));
 
     /*
-     * Start at the namespace containing the new command, and work up
-     * through the list of parents. Stop just before the global namespace,
-     * since the global namespace can't "shadow" its own entries.
+     * Start at the namespace containing the new command, and work up through
+     * the list of parents. Stop just before the global namespace, since the
+     * global namespace can't "shadow" its own entries.
      *
      * The namespace "trail" list we build consists of the names of each
      * namespace that encloses the new command, in order from outermost to
@@ -2264,200 +2560,164 @@ TclResetShadowedCmdRefs(interp, newCmdPtr)
      * eventually extends the trail upwards by one namespace, nsPtr. We use
      * this trail list to see if nsPtr (e.g. "a" in 2. above) could have
      * now-invalid cached command references. This will happen if nsPtr
-     * (e.g. "a") contains a sequence of child namespaces (e.g. "b")
-     * such that there is a identically-named sequence of child namespaces
-     * starting from :: (e.g. "::b") whose tail namespace contains a command
-     * also named cmdName.
+     * (e.g. "a") contains a sequence of child namespaces (e.g. "b") such that
+     * there is a identically-named sequence of child namespaces starting from
+     * :: (e.g. "::b") whose tail namespace contains a command also named
+     * cmdName.
      */
 
     cmdName = Tcl_GetHashKey(newCmdPtr->hPtr->tablePtr, newCmdPtr->hPtr);
-    for (nsPtr = newCmdPtr->nsPtr;
-	    (nsPtr != NULL) && (nsPtr != globalNsPtr);
-            nsPtr = nsPtr->parentPtr) {
-        /*
+    for (nsPtr=newCmdPtr->nsPtr ; (nsPtr!=NULL) && (nsPtr!=globalNsPtr) ;
+	    nsPtr=nsPtr->parentPtr) {
+	/*
 	 * Find the maximal sequence of child namespaces contained in nsPtr
-	 * such that there is a identically-named sequence of child
-	 * namespaces starting from ::. shadowNsPtr will be the tail of this
-	 * sequence, or the deepest namespace under :: that might contain a
-	 * command now shadowed by cmdName. We check below if shadowNsPtr
-	 * actually contains a command cmdName.
+	 * such that there is a identically-named sequence of child namespaces
+	 * starting from ::. shadowNsPtr will be the tail of this sequence, or
+	 * the deepest namespace under :: that might contain a command now
+	 * shadowed by cmdName. We check below if shadowNsPtr actually
+	 * contains a command cmdName.
 	 */
 
-        found = 1;
-        shadowNsPtr = globalNsPtr;
+	found = 1;
+	shadowNsPtr = globalNsPtr;
 
-        for (i = trailFront;  i >= 0;  i--) {
-            trailNsPtr = trailPtr[i];
-            hPtr = Tcl_FindHashEntry(&shadowNsPtr->childTable,
+	for (i = trailFront;  i >= 0;  i--) {
+	    trailNsPtr = trailPtr[i];
+	    hPtr = Tcl_FindHashEntry(&shadowNsPtr->childTable,
 		    trailNsPtr->name);
-            if (hPtr != NULL) {
-                shadowNsPtr = (Namespace *) Tcl_GetHashValue(hPtr);
-            } else {
-                found = 0;
-                break;
-            }
-        }
-
-        /*
-	 * If shadowNsPtr contains a command named cmdName, we invalidate
-         * all of the command refs cached in nsPtr. As a boundary case,
+	    if (hPtr != NULL) {
+		shadowNsPtr = Tcl_GetHashValue(hPtr);
+	    } else {
+		found = 0;
+		break;
+	    }
+	}
+
+	/*
+	 * If shadowNsPtr contains a command named cmdName, we invalidate all
+	 * of the command refs cached in nsPtr. As a boundary case,
 	 * shadowNsPtr is initially :: and we check for case 1. above.
 	 */
 
-        if (found) {
-            hPtr = Tcl_FindHashEntry(&shadowNsPtr->cmdTable, cmdName);
-            if (hPtr != NULL) {
-                nsPtr->cmdRefEpoch++;
+	if (found) {
+	    hPtr = Tcl_FindHashEntry(&shadowNsPtr->cmdTable, cmdName);
+	    if (hPtr != NULL) {
+		nsPtr->cmdRefEpoch++;
+		TclInvalidateNsPath(nsPtr);
 
-		/* 
+		/*
 		 * If the shadowed command was compiled to bytecodes, we
 		 * invalidate all the bytecodes in nsPtr, to force a new
 		 * compilation. We use the resolverEpoch to signal the need
 		 * for a fresh compilation of every bytecode.
 		 */
 
-		if ((((Command *) Tcl_GetHashValue(hPtr))->compileProc) != NULL) {
+		if (((Command *)Tcl_GetHashValue(hPtr))->compileProc != NULL) {
 		    nsPtr->resolverEpoch++;
 		}
-            }
-        }
+	    }
+	}
 
-        /*
-	 * Insert nsPtr at the front of the trail list: i.e., at the end
-	 * of the trailPtr array.
+	/*
+	 * Insert nsPtr at the front of the trail list: i.e., at the end of
+	 * the trailPtr array.
 	 */
 
 	trailFront++;
 	if (trailFront == trailSize) {
-	    size_t currBytes = trailSize * sizeof(Namespace *);
-	    int newSize = 2*trailSize;
-	    size_t newBytes = newSize * sizeof(Namespace *);
-	    Namespace **newPtr =
-		    (Namespace **) ckalloc((unsigned) newBytes);
-	    
-	    memcpy((VOID *) newPtr, (VOID *) trailPtr, currBytes);
-	    if (trailPtr != trailStorage) {
-		ckfree((char *) trailPtr);
-	    }
-	    trailPtr = newPtr;
+	    int newSize = 2 * trailSize;
+	    trailPtr = (Namespace **) TclStackRealloc(interp,
+		    trailPtr, newSize * sizeof(Namespace *));
 	    trailSize = newSize;
 	}
 	trailPtr[trailFront] = nsPtr;
     }
-
-    /*
-     * Free any allocated storage.
-     */
-    
-    if (trailPtr != trailStorage) {
-	ckfree((char *) trailPtr);
-    }
+    TclStackFree(interp, trailPtr);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * GetNamespaceFromObj --
+ * TclGetNamespaceFromObj, GetNamespaceFromObj --
  *
  *	Gets the namespace specified by the name in a Tcl_Obj.
  *
  * Results:
- *	Returns TCL_OK if the namespace was resolved successfully, and
- *	stores a pointer to the namespace in the location specified by
- *	nsPtrPtr. If the namespace can't be found, the procedure stores
- *	NULL in *nsPtrPtr and returns TCL_OK. If anything else goes wrong,
- *	this procedure returns TCL_ERROR.
+ *	Returns TCL_OK if the namespace was resolved successfully, and stores
+ *	a pointer to the namespace in the location specified by nsPtrPtr. If
+ *	the namespace can't be found, or anything else goes wrong, this
+ *	function returns TCL_ERROR and writes an error message to interp,
+ *	if non-NULL.
  *
  * Side effects:
  *	May update the internal representation for the object, caching the
- *	namespace reference. The next time this procedure is called, the
+ *	namespace reference. The next time this function is called, the
  *	namespace value can be found quickly.
  *
- *	If anything goes wrong, an error message is left in the
- *	interpreter's result object.
- *
  *----------------------------------------------------------------------
  */
 
-static int
-GetNamespaceFromObj(interp, objPtr, nsPtrPtr)
-    Tcl_Interp *interp;		/* The current interpreter. */
-    Tcl_Obj *objPtr;		/* The object to be resolved as the name
-				 * of a namespace. */
-    Tcl_Namespace **nsPtrPtr;	/* Result namespace pointer goes here. */
+int
+TclGetNamespaceFromObj(
+    Tcl_Interp *interp,		/* The current interpreter. */
+    Tcl_Obj *objPtr,		/* The object to be resolved as the name of a
+				 * namespace. */
+    Tcl_Namespace **nsPtrPtr)	/* Result namespace pointer goes here. */
 {
-    Interp *iPtr = (Interp *) interp;
-    register ResolvedNsName *resNamePtr;
-    register Namespace *nsPtr;
-    Namespace *currNsPtr;
-    CallFrame *savedFramePtr;
-    int result = TCL_OK;
-    char *name;
+    if (GetNamespaceFromObj(interp, objPtr, nsPtrPtr) == TCL_ERROR) {
+	const char *name = TclGetString(objPtr);
 
-    /*
-     * If the namespace name is fully qualified, do as if the lookup were
-     * done from the global namespace; this helps avoid repeated lookups 
-     * of fully qualified names. 
-     */
+	if ((name[0] == ':') && (name[1] == ':')) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "namespace \"%s\" not found", name));
+	} else {
+	    /*
+	     * Get the current namespace name.
+	     */
 
-    savedFramePtr = iPtr->varFramePtr;
-    name = Tcl_GetString(objPtr);
-    if ((*name++ == ':') && (*name == ':')) {
-	iPtr->varFramePtr = NULL;
+	    NamespaceCurrentCmd(NULL, interp, 2, NULL);
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "namespace \"%s\" not found in \"%s\"", name,
+		    Tcl_GetStringResult(interp)));
+	}
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", name, NULL);
+	return TCL_ERROR;
     }
+    return TCL_OK;
+}
 
-    currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    
-    /*
-     * Get the internal representation, converting to a namespace type if
-     * needed. The internal representation is a ResolvedNsName that points
-     * to the actual namespace.
-     */
-
-    if (objPtr->typePtr != &tclNsNameType) {
-        result = tclNsNameType.setFromAnyProc(interp, objPtr);
-        if (result != TCL_OK) {
-	    goto done;
-        }
-    }
-    resNamePtr = (ResolvedNsName *) objPtr->internalRep.otherValuePtr;
+static int
+GetNamespaceFromObj(
+    Tcl_Interp *interp,		/* The current interpreter. */
+    Tcl_Obj *objPtr,		/* The object to be resolved as the name of a
+				 * namespace. */
+    Tcl_Namespace **nsPtrPtr)	/* Result namespace pointer goes here. */
+{
+    ResolvedNsName *resNamePtr;
+    Namespace *nsPtr, *refNsPtr;
 
-    /*
-     * Check the context namespace of the resolved symbol to make sure that
-     * it is fresh. If not, then force another conversion to the namespace
-     * type, to discard the old rep and create a new one. Note that we
-     * verify that the namespace id of the cached namespace is the same as
-     * the id when we cached it; this insures that the namespace wasn't
-     * deleted and a new one created at the same address.
-     */
+    if (objPtr->typePtr == &nsNameType) {
+	/*
+	 * Check that the ResolvedNsName is still valid; avoid letting the ref 
+	 * cross interps.
+	 */
 
-    nsPtr = NULL;
-    if ((resNamePtr != NULL)
-	    && (resNamePtr->refNsPtr == currNsPtr)
-	    && (resNamePtr->nsId == resNamePtr->nsPtr->nsId)) {
-        nsPtr = resNamePtr->nsPtr;
-	if (nsPtr->flags & NS_DEAD) {
-	    nsPtr = NULL;
-	}
-    }
-    if (nsPtr == NULL) {	/* try again */
-        result = tclNsNameType.setFromAnyProc(interp, objPtr);
-        if (result != TCL_OK) {
-	    goto done;
-        }
-        resNamePtr = (ResolvedNsName *) objPtr->internalRep.otherValuePtr;
-        if (resNamePtr != NULL) {
-            nsPtr = resNamePtr->nsPtr;
-            if (nsPtr->flags & NS_DEAD) {
-                nsPtr = NULL;
-            }
-        }
-    }
-    *nsPtrPtr = (Tcl_Namespace *) nsPtr;
-
-    done:
-    iPtr->varFramePtr = savedFramePtr;
-    return result;
+	resNamePtr = (ResolvedNsName *) objPtr->internalRep.twoPtrValue.ptr1;
+	nsPtr = resNamePtr->nsPtr;
+	refNsPtr = resNamePtr->refNsPtr;
+	if (!(nsPtr->flags & NS_DYING) && (interp == nsPtr->interp) &&
+		(!refNsPtr || ((interp == refNsPtr->interp) &&
+		 (refNsPtr== (Namespace *) Tcl_GetCurrentNamespace(interp))))) {
+	    *nsPtrPtr = (Tcl_Namespace *) nsPtr;
+	    return TCL_OK;
+	}
+    }
+    if (SetNsNameFromAny(interp, objPtr) == TCL_OK) {
+	resNamePtr = (ResolvedNsName *) objPtr->internalRep.twoPtrValue.ptr1;
+	*nsPtrPtr = (Tcl_Namespace *) resNamePtr->nsPtr;
+	return TCL_OK;
+    }
+    return TCL_ERROR;
 }
 
 /*
@@ -2465,13 +2725,14 @@ GetNamespaceFromObj(interp, objPtr, nsPtrPtr)
  *
  * Tcl_NamespaceObjCmd --
  *
- *	Invoked to implement the "namespace" command that creates, deletes,
- *	or manipulates Tcl namespaces. Handles the following syntax:
+ *	Invoked to implement the "namespace" command that creates, deletes, or
+ *	manipulates Tcl namespaces. Handles the following syntax:
  *
  *	    namespace children ?name? ?pattern?
  *	    namespace code arg
  *	    namespace current
  *	    namespace delete ?name name...?
+ *	    namespace ensemble subcommand ?arg...?
  *	    namespace eval name arg ?arg...?
  *	    namespace exists name
  *	    namespace export ?-clear? ?pattern pattern...?
@@ -2489,41 +2750,40 @@ GetNamespaceFromObj(interp, objPtr, nsPtrPtr)
  *	anything goes wrong.
  *
  * Side effects:
- *	Based on the subcommand name (e.g., "import"), this procedure
- *	dispatches to a corresponding procedure NamespaceXXXCmd defined
- *	statically in this file. This procedure's side effects depend on
- *	whatever that subcommand procedure does. If there is an error, this
- *	procedure returns an error message in the interpreter's result
- *	object. Otherwise it may return a result in the interpreter's result
- *	object.
+ *	Based on the subcommand name (e.g., "import"), this function
+ *	dispatches to a corresponding function NamespaceXXXCmd defined
+ *	statically in this file. This function's side effects depend on
+ *	whatever that subcommand function does. If there is an error, this
+ *	function returns an error message in the interpreter's result object.
+ *	Otherwise it may return a result in the interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_NamespaceObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Arbitrary value passed to cmd. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    register int objc;			/* Number of arguments. */
-    register Tcl_Obj *CONST objv[];	/* Argument objects. */
-{
-    static CONST char *subCmds[] = {
-	"children", "code", "current", "delete",
+Tcl_NamespaceObjCmd(
+    ClientData clientData,	/* Arbitrary value passed to cmd. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    static const char *subCmds[] = {
+	"children", "code", "current", "delete", "ensemble",
 	"eval", "exists", "export", "forget", "import",
-	"inscope", "origin", "parent", "qualifiers",
-	"tail", "which", (char *) NULL
+	"inscope", "origin", "parent", "path", "qualifiers",
+	"tail", "unknown", "upvar", "which", NULL
     };
     enum NSSubCmdIdx {
-	NSChildrenIdx, NSCodeIdx, NSCurrentIdx, NSDeleteIdx,
+	NSChildrenIdx, NSCodeIdx, NSCurrentIdx, NSDeleteIdx, NSEnsembleIdx,
 	NSEvalIdx, NSExistsIdx, NSExportIdx, NSForgetIdx, NSImportIdx,
-	NSInscopeIdx, NSOriginIdx, NSParentIdx, NSQualifiersIdx,
-	NSTailIdx, NSWhichIdx
+	NSInscopeIdx, NSOriginIdx, NSParentIdx, NSPathIdx, NSQualifiersIdx,
+	NSTailIdx, NSUnknownIdx, NSUpvarIdx, NSWhichIdx
     };
     int index, result;
 
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?arg ...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?arg ...?");
+	return TCL_ERROR;
     }
 
     /*
@@ -2535,53 +2795,65 @@ Tcl_NamespaceObjCmd(clientData, interp, objc, objv)
     if (result != TCL_OK) {
 	return result;
     }
-    
+
     switch (index) {
-        case NSChildrenIdx:
-	    result = NamespaceChildrenCmd(clientData, interp, objc, objv);
-            break;
-        case NSCodeIdx:
-	    result = NamespaceCodeCmd(clientData, interp, objc, objv);
-            break;
-        case NSCurrentIdx:
-	    result = NamespaceCurrentCmd(clientData, interp, objc, objv);
-            break;
-        case NSDeleteIdx:
-	    result = NamespaceDeleteCmd(clientData, interp, objc, objv);
-            break;
-        case NSEvalIdx:
-	    result = NamespaceEvalCmd(clientData, interp, objc, objv);
-            break;
-        case NSExistsIdx:
-	    result = NamespaceExistsCmd(clientData, interp, objc, objv);
-            break;
-        case NSExportIdx:
-	    result = NamespaceExportCmd(clientData, interp, objc, objv);
-            break;
-        case NSForgetIdx:
-	    result = NamespaceForgetCmd(clientData, interp, objc, objv);
-            break;
-        case NSImportIdx:
-	    result = NamespaceImportCmd(clientData, interp, objc, objv);
-            break;
-        case NSInscopeIdx:
-	    result = NamespaceInscopeCmd(clientData, interp, objc, objv);
-            break;
-        case NSOriginIdx:
-	    result = NamespaceOriginCmd(clientData, interp, objc, objv);
-            break;
-        case NSParentIdx:
-	    result = NamespaceParentCmd(clientData, interp, objc, objv);
-            break;
-        case NSQualifiersIdx:
-	    result = NamespaceQualifiersCmd(clientData, interp, objc, objv);
-            break;
-        case NSTailIdx:
-	    result = NamespaceTailCmd(clientData, interp, objc, objv);
-            break;
-        case NSWhichIdx:
-	    result = NamespaceWhichCmd(clientData, interp, objc, objv);
-            break;
+    case NSChildrenIdx:
+	result = NamespaceChildrenCmd(clientData, interp, objc, objv);
+	break;
+    case NSCodeIdx:
+	result = NamespaceCodeCmd(clientData, interp, objc, objv);
+	break;
+    case NSCurrentIdx:
+	result = NamespaceCurrentCmd(clientData, interp, objc, objv);
+	break;
+    case NSDeleteIdx:
+	result = NamespaceDeleteCmd(clientData, interp, objc, objv);
+	break;
+    case NSEnsembleIdx:
+	result = NamespaceEnsembleCmd(clientData, interp, objc, objv);
+	break;
+    case NSEvalIdx:
+	result = NamespaceEvalCmd(clientData, interp, objc, objv);
+	break;
+    case NSExistsIdx:
+	result = NamespaceExistsCmd(clientData, interp, objc, objv);
+	break;
+    case NSExportIdx:
+	result = NamespaceExportCmd(clientData, interp, objc, objv);
+	break;
+    case NSForgetIdx:
+	result = NamespaceForgetCmd(clientData, interp, objc, objv);
+	break;
+    case NSImportIdx:
+	result = NamespaceImportCmd(clientData, interp, objc, objv);
+	break;
+    case NSInscopeIdx:
+	result = NamespaceInscopeCmd(clientData, interp, objc, objv);
+	break;
+    case NSOriginIdx:
+	result = NamespaceOriginCmd(clientData, interp, objc, objv);
+	break;
+    case NSParentIdx:
+	result = NamespaceParentCmd(clientData, interp, objc, objv);
+	break;
+    case NSPathIdx:
+	result = NamespacePathCmd(clientData, interp, objc, objv);
+	break;
+    case NSQualifiersIdx:
+	result = NamespaceQualifiersCmd(clientData, interp, objc, objv);
+	break;
+    case NSTailIdx:
+	result = NamespaceTailCmd(clientData, interp, objc, objv);
+	break;
+    case NSUpvarIdx:
+	result = NamespaceUpvarCmd(clientData, interp, objc, objv);
+	break;
+    case NSUnknownIdx:
+	result = NamespaceUnknownCmd(clientData, interp, objc, objv);
+	break;
+    case NSWhichIdx:
+	result = NamespaceWhichCmd(clientData, interp, objc, objv);
+	break;
     }
     return result;
 }
@@ -2592,8 +2864,8 @@ Tcl_NamespaceObjCmd(clientData, interp, objc, objv)
  * NamespaceChildrenCmd --
  *
  *	Invoked to implement the "namespace children" command that returns a
- *	list containing the fully-qualified names of the child namespaces of
- *	a given namespace. Handles the following syntax:
+ *	list containing the fully-qualified names of the child namespaces of a
+ *	given namespace. Handles the following syntax:
  *
  *	    namespace children ?name? ?pattern?
  *
@@ -2601,22 +2873,22 @@ Tcl_NamespaceObjCmd(clientData, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceChildrenCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceChildrenCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Namespace *namespacePtr;
     Namespace *nsPtr, *childNsPtr;
-    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
+    Namespace *globalNsPtr = (Namespace *) TclGetGlobalNamespace(interp);
     char *pattern = NULL;
     Tcl_DString buffer;
     register Tcl_HashEntry *entryPtr;
@@ -2628,21 +2900,15 @@ NamespaceChildrenCmd(dummy, interp, objc, objv)
      */
 
     if (objc == 2) {
-	nsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+	nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     } else if ((objc == 3) || (objc == 4)) {
-        if (GetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) {
-            return TCL_ERROR;
-        }
-        if (namespacePtr == NULL) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                    "unknown namespace \"", Tcl_GetString(objv[2]),
-		    "\" in namespace children command", (char *) NULL);
-            return TCL_ERROR;
-        }
-        nsPtr = (Namespace *) namespacePtr;
+	if (TclGetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	nsPtr = (Namespace *) namespacePtr;
     } else {
 	Tcl_WrongNumArgs(interp, 2, objv, "?name? ?pattern?");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
@@ -2651,37 +2917,50 @@ NamespaceChildrenCmd(dummy, interp, objc, objv)
 
     Tcl_DStringInit(&buffer);
     if (objc == 4) {
-        char *name = Tcl_GetString(objv[3]);
-	
-        if ((*name == ':') && (*(name+1) == ':')) {
-            pattern = name;
-        } else {
-            Tcl_DStringAppend(&buffer, nsPtr->fullName, -1);
-            if (nsPtr != globalNsPtr) {
-                Tcl_DStringAppend(&buffer, "::", 2);
-            }
-            Tcl_DStringAppend(&buffer, name, -1);
-            pattern = Tcl_DStringValue(&buffer);
-        }
+	char *name = TclGetString(objv[3]);
+
+	if ((*name == ':') && (*(name+1) == ':')) {
+	    pattern = name;
+	} else {
+	    Tcl_DStringAppend(&buffer, nsPtr->fullName, -1);
+	    if (nsPtr != globalNsPtr) {
+		Tcl_DStringAppend(&buffer, "::", 2);
+	    }
+	    Tcl_DStringAppend(&buffer, name, -1);
+	    pattern = Tcl_DStringValue(&buffer);
+	}
     }
 
     /*
-     * Create a list containing the full names of all child namespaces
-     * whose names match the specified pattern, if any.
+     * Create a list containing the full names of all child namespaces whose
+     * names match the specified pattern, if any.
      */
 
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
+    listPtr = Tcl_NewListObj(0, NULL);
+    if ((pattern != NULL) && TclMatchIsTrivial(pattern)) {
+	unsigned int length = strlen(nsPtr->fullName);
+
+	if (strncmp(pattern, nsPtr->fullName, length) != 0) {
+	    goto searchDone;
+	}
+	if (Tcl_FindHashEntry(&nsPtr->childTable, pattern+length) != NULL) {
+	    Tcl_ListObjAppendElement(interp, listPtr,
+		    Tcl_NewStringObj(pattern, -1));
+	}
+	goto searchDone;
+    }
     entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search);
     while (entryPtr != NULL) {
-        childNsPtr = (Namespace *) Tcl_GetHashValue(entryPtr);
-        if ((pattern == NULL)
-	        || Tcl_StringMatch(childNsPtr->fullName, pattern)) {
-            elemPtr = Tcl_NewStringObj(childNsPtr->fullName, -1);
-            Tcl_ListObjAppendElement(interp, listPtr, elemPtr);
-        }
-        entryPtr = Tcl_NextHashEntry(&search);
+	childNsPtr = Tcl_GetHashValue(entryPtr);
+	if ((pattern == NULL)
+		|| Tcl_StringMatch(childNsPtr->fullName, pattern)) {
+	    elemPtr = Tcl_NewStringObj(childNsPtr->fullName, -1);
+	    Tcl_ListObjAppendElement(interp, listPtr, elemPtr);
+	}
+	entryPtr = Tcl_NextHashEntry(&search);
     }
 
+  searchDone:
     Tcl_SetObjResult(interp, listPtr);
     Tcl_DStringFree(&buffer);
     return TCL_OK;
@@ -2702,79 +2981,73 @@ NamespaceChildrenCmd(dummy, interp, objc, objv)
  *
  *	    list ::namespace inscope [namespace current] $arg
  *
- *	However, if "arg" is itself a scoped value starting with
- *	"::namespace inscope", then the result is just "arg".
+ *	However, if "arg" is itself a scoped value starting with "::namespace
+ *	inscope", then the result is just "arg".
  *
  * Results:
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	If anything goes wrong, this procedure returns an error
- *	message as the result in the interpreter's result object.
+ *	If anything goes wrong, this function returns an error message as the
+ *	result in the interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceCodeCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceCodeCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Namespace *currNsPtr;
     Tcl_Obj *listPtr, *objPtr;
-    register char *arg, *p;
+    register char *arg;
     int length;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 2, objv, "arg");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
      * If "arg" is already a scoped value, then return it directly.
+     * Take care to only check for scoping in precisely the style that
+     * [::namespace code] generates it.  Anything more forgiving can have
+     * the effect of failing in namespaces that contain their own custom
+     " "namespace" command.  [Bug 3202171].
      */
 
-    arg = Tcl_GetStringFromObj(objv[2], &length);
-    while (*arg == ':') { 
-	arg++; 
-	length--; 
-    } 
-    if ((*arg == 'n') && (length > 17)
-	    && (strncmp(arg, "namespace", 9) == 0)) {
-	for (p = (arg + 9);  (*p == ' ');  p++) {
-	    /* empty body: skip over spaces */
-	}
-	if ((*p == 'i') && ((p + 7) <= (arg + length))
-	        && (strncmp(p, "inscope", 7) == 0)) {
-	    Tcl_SetObjResult(interp, objv[2]);
-	    return TCL_OK;
-	}
+    arg = TclGetStringFromObj(objv[2], &length);
+    if (*arg==':' && length > 20 
+	    && strncmp(arg, "::namespace inscope ", 20) == 0) {
+	Tcl_SetObjResult(interp, objv[2]);
+	return TCL_OK;
     }
 
     /*
      * Otherwise, construct a scoped command by building a list with
-     * "namespace inscope", the full name of the current namespace, and 
-     * the argument "arg". By constructing a list, we ensure that scoped
-     * commands are interpreted properly when they are executed later,
-     * by the "namespace inscope" command.
+     * "namespace inscope", the full name of the current namespace, and the
+     * argument "arg". By constructing a list, we ensure that scoped commands
+     * are interpreted properly when they are executed later, by the
+     * "namespace inscope" command.
      */
 
-    listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-    Tcl_ListObjAppendElement(interp, listPtr,
-            Tcl_NewStringObj("::namespace", -1));
-    Tcl_ListObjAppendElement(interp, listPtr,
-	    Tcl_NewStringObj("inscope", -1));
+    TclNewObj(listPtr);
+    TclNewLiteralStringObj(objPtr, "::namespace");
+    Tcl_ListObjAppendElement(interp, listPtr, objPtr);
+    TclNewLiteralStringObj(objPtr, "inscope");
+    Tcl_ListObjAppendElement(interp, listPtr, objPtr);
 
-    currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    if (currNsPtr == (Namespace *) Tcl_GetGlobalNamespace(interp)) {
-	objPtr = Tcl_NewStringObj("::", -1);
+    currNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    if (currNsPtr == (Namespace *) TclGetGlobalNamespace(interp)) {
+	TclNewLiteralStringObj(objPtr, "::");
     } else {
 	objPtr = Tcl_NewStringObj(currNsPtr->fullName, -1);
     }
     Tcl_ListObjAppendElement(interp, listPtr, objPtr);
-    
+
     Tcl_ListObjAppendElement(interp, listPtr, objv[2]);
 
     Tcl_SetObjResult(interp, listPtr);
@@ -2786,9 +3059,9 @@ NamespaceCodeCmd(dummy, interp, objc, objv)
  *
  * NamespaceCurrentCmd --
  *
- *	Invoked to implement the "namespace current" command which returns
- *	the fully-qualified name of the current namespace. Handles the
- *	following syntax:
+ *	Invoked to implement the "namespace current" command which returns the
+ *	fully-qualified name of the current namespace. Handles the following
+ *	syntax:
  *
  *	    namespace current
  *
@@ -2796,40 +3069,40 @@ NamespaceCodeCmd(dummy, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceCurrentCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceCurrentCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register Namespace *currNsPtr;
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 2, objv, NULL);
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
-     * The "real" name of the global namespace ("::") is the null string,
-     * but we return "::" for it as a convenience to programmers. Note that
-     * "" and "::" are treated as synonyms by the namespace code so that it
-     * is still easy to do things like:
+     * The "real" name of the global namespace ("::") is the null string, but
+     * we return "::" for it as a convenience to programmers. Note that "" and
+     * "::" are treated as synonyms by the namespace code so that it is still
+     * easy to do things like:
      *
      *    namespace [namespace current]::bar { ... }
      */
 
-    currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
-    if (currNsPtr == (Namespace *) Tcl_GetGlobalNamespace(interp)) {
-        Tcl_AppendToObj(Tcl_GetObjResult(interp), "::", -1);
+    currNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    if (currNsPtr == (Namespace *) TclGetGlobalNamespace(interp)) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj("::", 2));
     } else {
-	Tcl_AppendToObj(Tcl_GetObjResult(interp), currNsPtr->fullName, -1);
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(currNsPtr->fullName, -1));
     }
     return TCL_OK;
 }
@@ -2847,57 +3120,58 @@ NamespaceCurrentCmd(dummy, interp, objc, objv)
  *	Each name identifies a namespace. It may include a sequence of
  *	namespace qualifiers separated by "::"s. If a namespace is found, it
  *	is deleted: all variables and procedures contained in that namespace
- *	are deleted. If that namespace is being used on the call stack, it
- *	is kept alive (but logically deleted) until it is removed from the
- *	call stack: that is, it can no longer be referenced by name but any
+ *	are deleted. If that namespace is being used on the call stack, it is
+ *	kept alive (but logically deleted) until it is removed from the call
+ *	stack: that is, it can no longer be referenced by name but any
  *	currently executing procedure that refers to it is allowed to do so
  *	until the procedure returns. If the namespace can't be found, this
- *	procedure returns an error. If no namespaces are specified, this
+ *	function returns an error. If no namespaces are specified, this
  *	command does nothing.
  *
  * Results:
- *	Returns TCL_OK if successful, and  TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
  *	Deletes the specified namespaces. If anything goes wrong, this
- *	procedure returns an error message in the interpreter's
- *	result object.
+ *	function returns an error message in the interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceDeleteCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceDeleteCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Namespace *namespacePtr;
     char *name;
     register int i;
 
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, "?name name...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "?name name...?");
+	return TCL_ERROR;
     }
 
     /*
-     * Destroying one namespace may cause another to be destroyed. Break
-     * this into two passes: first check to make sure that all namespaces on
-     * the command line are valid, and report any errors.
+     * Destroying one namespace may cause another to be destroyed. Break this
+     * into two passes: first check to make sure that all namespaces on the
+     * command line are valid, and report any errors.
      */
 
     for (i = 2;  i < objc;  i++) {
-        name = Tcl_GetString(objv[i]);
-	namespacePtr = Tcl_FindNamespace(interp, name,
-		(Tcl_Namespace *) NULL, /*flags*/ 0);
-	if (namespacePtr == NULL) {
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                    "unknown namespace \"", Tcl_GetString(objv[i]),
-		    "\" in namespace delete command", (char *) NULL);
-            return TCL_ERROR;
-        }
+	name = TclGetString(objv[i]);
+	namespacePtr = Tcl_FindNamespace(interp, name, NULL, /*flags*/ 0);
+	if ((namespacePtr == NULL)
+		|| (((Namespace *)namespacePtr)->flags & NS_KILLED)) {
+	    Tcl_AppendResult(interp, "unknown namespace \"",
+		    TclGetString(objv[i]),
+		    "\" in namespace delete command", NULL);
+	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE",
+		    TclGetString(objv[i]), NULL);
+	    return TCL_ERROR;
+	}
     }
 
     /*
@@ -2905,12 +3179,11 @@ NamespaceDeleteCmd(dummy, interp, objc, objv)
      */
 
     for (i = 2;  i < objc;  i++) {
-        name = Tcl_GetString(objv[i]);
-	namespacePtr = Tcl_FindNamespace(interp, name,
-	    (Tcl_Namespace *) NULL, /* flags */ 0);
+	name = TclGetString(objv[i]);
+	namespacePtr = Tcl_FindNamespace(interp, name, NULL, /* flags */ 0);
 	if (namespacePtr) {
-            Tcl_DeleteNamespace(namespacePtr);
-        }
+	    Tcl_DeleteNamespace(namespacePtr);
+	}
     }
     return TCL_OK;
 }
@@ -2920,44 +3193,43 @@ NamespaceDeleteCmd(dummy, interp, objc, objv)
  *
  * NamespaceEvalCmd --
  *
- *	Invoked to implement the "namespace eval" command. Executes
- *	commands in a namespace. If the namespace does not already exist,
- *	it is created. Handles the following syntax:
+ *	Invoked to implement the "namespace eval" command. Executes commands
+ *	in a namespace. If the namespace does not already exist, it is
+ *	created. Handles the following syntax:
  *
  *	    namespace eval name arg ?arg...?
  *
  *	If more than one arg argument is specified, the command that is
- *	executed is the result of concatenating the arguments together with
- *	a space between each argument.
+ *	executed is the result of concatenating the arguments together with a
+ *	space between each argument.
  *
  * Results:
- *	Returns TCL_OK if the namespace is found and the commands are
- *	executed successfully. Returns TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK if the namespace is found and the commands are executed
+ *	successfully. Returns TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns the result of the command in the interpreter's result
- *	object. If anything goes wrong, this procedure returns an error
- *	message as the result.
+ *	Returns the result of the command in the interpreter's result object.
+ *	If anything goes wrong, this function returns an error message as the
+ *	result.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceEvalCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceEvalCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Namespace *namespacePtr;
-    CallFrame frame;
+    CallFrame *framePtr, **framePtrPtr;
     Tcl_Obj *objPtr;
-    char *name;
-    int length, result;
+    int result;
 
     if (objc < 4) {
-        Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?");
+	return TCL_ERROR;
     }
 
     /*
@@ -2966,74 +3238,79 @@ NamespaceEvalCmd(dummy, interp, objc, objv)
      */
 
     result = GetNamespaceFromObj(interp, objv[2], &namespacePtr);
-    if (result != TCL_OK) {
-        return result;
-    }
 
     /*
      * If the namespace wasn't found, try to create it.
      */
-    
-    if (namespacePtr == NULL) {
-	name = Tcl_GetStringFromObj(objv[2], &length);
-	namespacePtr = Tcl_CreateNamespace(interp, name, (ClientData) NULL, 
-                (Tcl_NamespaceDeleteProc *) NULL);
+
+    if (result == TCL_ERROR) {
+	char *name = TclGetString(objv[2]);
+
+	namespacePtr = Tcl_CreateNamespace(interp, name, NULL, NULL);
 	if (namespacePtr == NULL) {
 	    return TCL_ERROR;
 	}
     }
 
     /*
-     * Make the specified namespace the current namespace and evaluate
-     * the command(s).
+     * Make the specified namespace the current namespace and evaluate the
+     * command(s).
      */
 
-    result = Tcl_PushCallFrame(interp, (Tcl_CallFrame *) &frame, 
-            namespacePtr, /*isProcCallFrame*/ 0);
+    /* This is needed to satisfy GCC 3.3's strict aliasing rules */
+    framePtrPtr = &framePtr;
+    result = TclPushStackFrame(interp, (Tcl_CallFrame **) framePtrPtr,
+	    namespacePtr, /*isProcCallFrame*/ 0);
     if (result != TCL_OK) {
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    frame.objc = objc;
-    frame.objv = objv;  /* ref counts do not need to be incremented here */
+
+    framePtr->objc = objc;
+    framePtr->objv = objv;
 
     if (objc == 4) {
-#ifndef TCL_TIP280
-        result = Tcl_EvalObjEx(interp, objv[3], 0);
-#else
-        /* TIP #280 : Make actual argument location available to eval'd script */
-        Interp* iPtr      = (Interp*) interp;
+	/*
+	 * TIP #280: Make actual argument location available to eval'd script.
+	 */
+
+	Interp *iPtr      = (Interp *) interp;
 	CmdFrame* invoker = iPtr->cmdFramePtr;
 	int word          = 3;
+
 	TclArgumentGet (interp, objv[3], &invoker, &word);
-        result = TclEvalObjEx(interp, objv[3], 0, invoker, word);
-#endif
+	result = TclEvalObjEx(interp, objv[3], 0, invoker, word);
     } else {
 	/*
 	 * More than one argument: concatenate them together with spaces
-	 * between, then evaluate the result.  Tcl_EvalObjEx will delete
-	 * the object when it decrements its refcount after eval'ing it.
+	 * between, then evaluate the result. Tcl_EvalObjEx will delete the
+	 * object when it decrements its refcount after eval'ing it.
+	 */
+
+	objPtr = Tcl_ConcatObj(objc-3, objv+3);
+
+	/*
+	 * TIP #280: Make invoking context available to eval'd script.
 	 */
-        objPtr = Tcl_ConcatObj(objc-3, objv+3);
-#ifndef TCL_TIP280
-        result = Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_DIRECT);
-#else
-	/* TIP #280. Make invoking context available to eval'd script */
+
 	result = TclEvalObjEx(interp, objPtr, TCL_EVAL_DIRECT, NULL, 0);
-#endif
     }
+
     if (result == TCL_ERROR) {
-        char msg[256 + TCL_INTEGER_SPACE];
-	
-        sprintf(msg, "\n    (in namespace eval \"%.200s\" script line %d)",
-            namespacePtr->fullName, interp->errorLine);
-        Tcl_AddObjErrorInfo(interp, msg, -1);
+	int length = strlen(namespacePtr->fullName);
+	int limit = 200;
+	int overflow = (length > limit);
+
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (in namespace eval \"%.*s%s\" script line %d)",
+		(overflow ? limit : length), namespacePtr->fullName,
+		(overflow ? "..." : ""), interp->errorLine));
     }
 
     /*
      * Restore the previous "current" namespace.
      */
-    
-    Tcl_PopCallFrame(interp);
+
+    TclPopStackFrame(interp);
     return result;
 }
 
@@ -3042,9 +3319,9 @@ NamespaceEvalCmd(dummy, interp, objc, objv)
  *
  * NamespaceExistsCmd --
  *
- *	Invoked to implement the "namespace exists" command that returns 
- *	true if the given namespace currently exists, and false otherwise.
- *	Handles the following syntax:
+ *	Invoked to implement the "namespace exists" command that returns true
+ *	if the given namespace currently exists, and false otherwise. Handles
+ *	the following syntax:
  *
  *	    namespace exists name
  *
@@ -3052,35 +3329,28 @@ NamespaceEvalCmd(dummy, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceExistsCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceExistsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Namespace *namespacePtr;
 
     if (objc != 3) {
-        Tcl_WrongNumArgs(interp, 2, objv, "name");
-        return TCL_ERROR;
-    }
-
-    /*
-     * Check whether the given namespace exists
-     */
-
-    if (GetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) {
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "name");
+	return TCL_ERROR;
     }
 
-    Tcl_SetBooleanObj(Tcl_GetObjResult(interp), (namespacePtr != NULL));
+    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(
+	    GetNamespaceFromObj(interp, objv[2], &namespacePtr) == TCL_OK));
     return TCL_OK;
 }
 
@@ -3091,18 +3361,18 @@ NamespaceExistsCmd(dummy, interp, objc, objv)
  *
  *	Invoked to implement the "namespace export" command that specifies
  *	which commands are exported from a namespace. The exported commands
- *	are those that can be imported into another namespace using
- *	"namespace import". Both commands defined in a namespace and
- *	commands the namespace has imported can be exported by a
- *	namespace. This command has the following syntax:
+ *	are those that can be imported into another namespace using "namespace
+ *	import". Both commands defined in a namespace and commands the
+ *	namespace has imported can be exported by a namespace. This command
+ *	has the following syntax:
  *
  *	    namespace export ?-clear? ?pattern pattern...?
  *
- *	Each pattern may contain "string match"-style pattern matching
- *	special characters, but the pattern may not include any namespace
- *	qualifiers: that is, the pattern must specify commands in the
- *	current (exporting) namespace. The specified patterns are appended
- *	onto the namespace's list of export patterns.
+ *	Each pattern may contain "string match"-style pattern matching special
+ *	characters, but the pattern may not include any namespace qualifiers:
+ *	that is, the pattern must specify commands in the current (exporting)
+ *	namespace. The specified patterns are appended onto the namespace's
+ *	list of export patterns.
  *
  *	To reset the namespace's export pattern list, specify the "-clear"
  *	flag.
@@ -3114,30 +3384,29 @@ NamespaceExistsCmd(dummy, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceExportCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceExportCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int firstArg, i;
 
     if (objc < 2) {
-	Tcl_WrongNumArgs(interp, 2, objv,
-	        "?-clear? ?pattern pattern...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "?-clear? ?pattern pattern...?");
+	return TCL_ERROR;
     }
 
     /*
-     * If no pattern arguments are given, and "-clear" isn't specified,
-     * return the namespace's current export pattern list.
+     * If no pattern arguments are given, and "-clear" isn't specified, return
+     * the namespace's current export pattern list.
      */
 
     if (objc == 2) {
@@ -3162,12 +3431,12 @@ NamespaceExportCmd(dummy, interp, objc, objv)
     /*
      * Add each pattern to the namespace's export pattern list.
      */
-    
+
     for (i = firstArg;  i < objc;  i++) {
 	int result = Tcl_Export(interp, NULL, Tcl_GetString(objv[i]), 0);
-        if (result != TCL_OK) {
-            return result;
-        }
+	if (result != TCL_OK) {
+	    return result;
+	}
     }
     return TCL_OK;
 }
@@ -3177,52 +3446,52 @@ NamespaceExportCmd(dummy, interp, objc, objv)
  *
  * NamespaceForgetCmd --
  *
- *	Invoked to implement the "namespace forget" command to remove
- *	imported commands from a namespace. Handles the following syntax:
+ *	Invoked to implement the "namespace forget" command to remove imported
+ *	commands from a namespace. Handles the following syntax:
  *
  *	    namespace forget ?pattern pattern...?
  *
  *	Each pattern is a name like "foo::*" or "a::b::x*". That is, the
- *	pattern may include the special pattern matching characters
- *	recognized by the "string match" command, but only in the command
- *	name at the end of the qualified name; the special pattern
- *	characters may not appear in a namespace name. All of the commands
- *	that match that pattern are checked to see if they have an imported
- *	command in the current namespace that refers to the matched
- *	command. If there is an alias, it is removed.
- *	
+ *	pattern may include the special pattern matching characters recognized
+ *	by the "string match" command, but only in the command name at the end
+ *	of the qualified name; the special pattern characters may not appear
+ *	in a namespace name. All of the commands that match that pattern are
+ *	checked to see if they have an imported command in the current
+ *	namespace that refers to the matched command. If there is an alias, it
+ *	is removed.
+ *
  * Results:
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Imported commands are removed from the current namespace. If
- *	anything goes wrong, this procedure returns an error message in the
+ *	Imported commands are removed from the current namespace. If anything
+ *	goes wrong, this function returns an error message in the
  *	interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceForgetCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceForgetCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *pattern;
     register int i, result;
 
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 2, objv, "?pattern pattern...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "?pattern pattern...?");
+	return TCL_ERROR;
     }
 
     for (i = 2;  i < objc;  i++) {
-        pattern = Tcl_GetString(objv[i]);
-	result = Tcl_ForgetImport(interp, (Tcl_Namespace *) NULL, pattern);
-        if (result != TCL_OK) {
-            return result;
-        }
+	pattern = TclGetString(objv[i]);
+	result = Tcl_ForgetImport(interp, NULL, pattern);
+	if (result != TCL_OK) {
+	    return result;
+	}
     }
     return TCL_OK;
 }
@@ -3237,39 +3506,42 @@ NamespaceForgetCmd(dummy, interp, objc, objv)
  *
  *	    namespace import ?-force? ?pattern pattern...?
  *
- *	Each pattern is a namespace-qualified name like "foo::*",
- *	"a::b::x*", or "bar::p". That is, the pattern may include the
- *	special pattern matching characters recognized by the "string match"
- *	command, but only in the command name at the end of the qualified
- *	name; the special pattern characters may not appear in a namespace
- *	name. All of the commands that match the pattern and which are
- *	exported from their namespace are made accessible from the current
- *	namespace context. This is done by creating a new "imported command"
- *	in the current namespace that points to the real command in its
- *	original namespace; when the imported command is called, it invokes
- *	the real command.
+ *	Each pattern is a namespace-qualified name like "foo::*", "a::b::x*",
+ *	or "bar::p". That is, the pattern may include the special pattern
+ *	matching characters recognized by the "string match" command, but only
+ *	in the command name at the end of the qualified name; the special
+ *	pattern characters may not appear in a namespace name. All of the
+ *	commands that match the pattern and which are exported from their
+ *	namespace are made accessible from the current namespace context. This
+ *	is done by creating a new "imported command" in the current namespace
+ *	that points to the real command in its original namespace; when the
+ *	imported command is called, it invokes the real command.
  *
  *	If an imported command conflicts with an existing command, it is
  *	treated as an error. But if the "-force" option is included, then
  *	existing commands are overwritten by the imported commands.
- *	
+ *
+ *	If there are no pattern arguments and the "-force" flag isn't given,
+ *	this command returns the list of commands currently imported in
+ *	the current namespace.
+ *
  * Results:
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
  *	Adds imported commands to the current namespace. If anything goes
- *	wrong, this procedure returns an error message in the interpreter's
+ *	wrong, this function returns an error message in the interpreter's
  *	result object.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceImportCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceImportCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int allowOverwrite = 0;
     char *string, *pattern;
@@ -3277,9 +3549,8 @@ NamespaceImportCmd(dummy, interp, objc, objv)
     int firstArg;
 
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 2, objv,
-	        "?-force? ?pattern pattern...?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "?-force? ?pattern pattern...?");
+	return TCL_ERROR;
     }
 
     /*
@@ -3288,11 +3559,34 @@ NamespaceImportCmd(dummy, interp, objc, objv)
 
     firstArg = 2;
     if (firstArg < objc) {
-	string = Tcl_GetString(objv[firstArg]);
+	string = TclGetString(objv[firstArg]);
 	if ((*string == '-') && (strcmp(string, "-force") == 0)) {
 	    allowOverwrite = 1;
 	    firstArg++;
 	}
+    } else {
+	/*
+	 * When objc == 2, command is just [namespace import]. Introspection
+	 * form to return list of imported commands.
+	 */
+
+	Tcl_HashEntry *hPtr;
+	Tcl_HashSearch search;
+	Namespace *nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+	Tcl_Obj *listPtr;
+
+	TclNewObj(listPtr);
+	for (hPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
+		hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
+	    Command *cmdPtr = Tcl_GetHashValue(hPtr);
+
+	    if (cmdPtr->deleteProc == DeleteImportedCmd) {
+		Tcl_ListObjAppendElement(NULL, listPtr, Tcl_NewStringObj(
+			Tcl_GetHashKey(&nsPtr->cmdTable, hPtr) ,-1));
+	    }
+	}
+	Tcl_SetObjResult(interp, listPtr);
+	return TCL_OK;
     }
 
     /*
@@ -3300,12 +3594,11 @@ NamespaceImportCmd(dummy, interp, objc, objv)
      */
 
     for (i = firstArg;  i < objc;  i++) {
-        pattern = Tcl_GetString(objv[i]);
-	result = Tcl_Import(interp, (Tcl_Namespace *) NULL, pattern,
-	        allowOverwrite);
-        if (result != TCL_OK) {
-            return result;
-        }
+	pattern = TclGetString(objv[i]);
+	result = Tcl_Import(interp, NULL, pattern, allowOverwrite);
+	if (result != TCL_OK) {
+	    return result;
+	}
     }
     return TCL_OK;
 }
@@ -3317,30 +3610,29 @@ NamespaceImportCmd(dummy, interp, objc, objv)
  *
  *	Invoked to implement the "namespace inscope" command that executes a
  *	script in the context of a particular namespace. This command is not
- *	expected to be used directly by programmers; calls to it are
- *	generated implicitly when programs use "namespace code" commands
- *	to register callback scripts. Handles the following syntax:
+ *	expected to be used directly by programmers; calls to it are generated
+ *	implicitly when programs use "namespace code" commands to register
+ *	callback scripts. Handles the following syntax:
  *
  *	    namespace inscope name arg ?arg...?
  *
  *	The "namespace inscope" command is much like the "namespace eval"
  *	command except that it has lappend semantics and the namespace must
- *	already exist. It treats the first argument as a list, and appends
- *	any arguments after the first onto the end as proper list elements.
- *	For example,
+ *	already exist. It treats the first argument as a list, and appends any
+ *	arguments after the first onto the end as proper list elements. For
+ *	example,
  *
- *	    namespace inscope ::foo a b c d
+ *	    namespace inscope ::foo {a b} c d e
  *
  *	is equivalent to
  *
- *	    namespace eval ::foo [concat a [list b c d]]
+ *	    namespace eval ::foo [concat {a b} [list c d e]]
  *
- *	This lappend semantics is important because many callback scripts
- *	are actually prefixes.
+ *	This lappend semantics is important because many callback scripts are
+ *	actually prefixes.
  *
  * Results:
- *	Returns TCL_OK to indicate success, or TCL_ERROR to indicate
- *	failure.
+ *	Returns TCL_OK to indicate success, or TCL_ERROR to indicate failure.
  *
  * Side effects:
  *	Returns a result in the Tcl interpreter's result object.
@@ -3349,88 +3641,88 @@ NamespaceImportCmd(dummy, interp, objc, objv)
  */
 
 static int
-NamespaceInscopeCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceInscopeCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Namespace *namespacePtr;
-    Tcl_CallFrame frame;
+    CallFrame *framePtr, **framePtrPtr;
     int i, result;
 
     if (objc < 4) {
 	Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
      * Resolve the namespace reference.
      */
 
-    result = GetNamespaceFromObj(interp, objv[2], &namespacePtr);
-    if (result != TCL_OK) {
-        return result;
-    }
-    if (namespacePtr == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-	        "unknown namespace \"", Tcl_GetString(objv[2]),
-		"\" in inscope namespace command", (char *) NULL);
-        return TCL_ERROR;
+    if (TclGetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) {
+	return TCL_ERROR;
     }
 
     /*
      * Make the specified namespace the current namespace.
      */
 
-    result = Tcl_PushCallFrame(interp, &frame, namespacePtr,
-	    /*isProcCallFrame*/ 0);
+    framePtrPtr = &framePtr;		/* This is needed to satisfy GCC's
+					 * strict aliasing rules. */
+    result = TclPushStackFrame(interp, (Tcl_CallFrame **) framePtrPtr,
+	    namespacePtr, /*isProcCallFrame*/ 0);
     if (result != TCL_OK) {
-        return result;
+	return result;
     }
 
+    framePtr->objc = objc;
+    framePtr->objv = objv;
+
     /*
-     * Execute the command. If there is just one argument, just treat it as
-     * a script and evaluate it. Otherwise, create a list from the arguments
+     * Execute the command. If there is just one argument, just treat it as a
+     * script and evaluate it. Otherwise, create a list from the arguments
      * after the first one, then concatenate the first argument and the list
      * of extra arguments to form the command to evaluate.
      */
 
     if (objc == 4) {
-        result = Tcl_EvalObjEx(interp, objv[3], 0);
+	result = Tcl_EvalObjEx(interp, objv[3], 0);
     } else {
 	Tcl_Obj *concatObjv[2];
 	register Tcl_Obj *listPtr, *cmdObjPtr;
-	
-        listPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
-        for (i = 4;  i < objc;  i++) {
-	    result = Tcl_ListObjAppendElement(interp, listPtr, objv[i]);
-            if (result != TCL_OK) {
-                Tcl_DecrRefCount(listPtr); /* free unneeded obj */
-                return result;
-            }
-        }
+
+	listPtr = Tcl_NewListObj(0, NULL);
+	for (i = 4;  i < objc;  i++) {
+	    if (Tcl_ListObjAppendElement(interp, listPtr, objv[i]) != TCL_OK) {
+		Tcl_DecrRefCount(listPtr);	/* Free unneeded obj. */
+		return TCL_ERROR;
+	    }
+	}
 
 	concatObjv[0] = objv[3];
 	concatObjv[1] = listPtr;
 	cmdObjPtr = Tcl_ConcatObj(2, concatObjv);
-        result = Tcl_EvalObjEx(interp, cmdObjPtr, TCL_EVAL_DIRECT);
-	Tcl_DecrRefCount(listPtr);    /* we're done with the list object */
+	result = Tcl_EvalObjEx(interp, cmdObjPtr, TCL_EVAL_DIRECT);
+	Tcl_DecrRefCount(listPtr);    /* We're done with the list object. */
     }
+
     if (result == TCL_ERROR) {
-        char msg[256 + TCL_INTEGER_SPACE];
-	
-        sprintf(msg,
-	    "\n    (in namespace inscope \"%.200s\" script line %d)",
-            namespacePtr->fullName, interp->errorLine);
-        Tcl_AddObjErrorInfo(interp, msg, -1);
+	int length = strlen(namespacePtr->fullName);
+	int limit = 200;
+	int overflow = (length > limit);
+
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (in namespace inscope \"%.*s%s\" script line %d)",
+		(overflow ? limit : length), namespacePtr->fullName,
+		(overflow ? "..." : ""), interp->errorLine));
     }
 
     /*
      * Restore the previous "current" namespace.
      */
 
-    Tcl_PopCallFrame(interp);
+    TclPopStackFrame(interp);
     return result;
 }
 
@@ -3453,49 +3745,53 @@ NamespaceInscopeCmd(dummy, interp, objc, objv)
  *	command returns the fully-qualified name of the original command in
  *	the first namespace, a. If "name" does not refer to an alias, its
  *	fully-qualified name is returned. The returned name is stored in the
- *	interpreter's result object. This procedure returns TCL_OK if
+ *	interpreter's result object. This function returns TCL_OK if
  *	successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	If anything goes wrong, this procedure returns an error message in
- *	the interpreter's result object.
+ *	If anything goes wrong, this function returns an error message in the
+ *	interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceOriginCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceOriginCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Command command, origCommand;
+    Tcl_Obj *resultPtr;
 
     if (objc != 3) {
-        Tcl_WrongNumArgs(interp, 2, objv, "name");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "name");
+	return TCL_ERROR;
     }
 
     command = Tcl_GetCommandFromObj(interp, objv[2]);
-    if (command == (Tcl_Command) NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"invalid command name \"", Tcl_GetString(objv[2]),
-		"\"", (char *) NULL);
+    if (command == NULL) {
+	Tcl_AppendResult(interp, "invalid command name \"",
+		TclGetString(objv[2]), "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND",
+		TclGetString(objv[2]), NULL);
 	return TCL_ERROR;
     }
     origCommand = TclGetOriginalCommand(command);
-    if (origCommand == (Tcl_Command) NULL) {
+    TclNewObj(resultPtr);
+    if (origCommand == NULL) {
 	/*
 	 * The specified command isn't an imported command. Return the
-	 * command's name qualified by the full name of the namespace it
-	 * was defined in.
+	 * command's name qualified by the full name of the namespace it was
+	 * defined in.
 	 */
-	
-	Tcl_GetCommandFullName(interp, command, Tcl_GetObjResult(interp));
+
+	Tcl_GetCommandFullName(interp, command, resultPtr);
     } else {
-	Tcl_GetCommandFullName(interp, origCommand, Tcl_GetObjResult(interp));
+	Tcl_GetCommandFullName(interp, origCommand, resultPtr);
     }
+    Tcl_SetObjResult(interp, resultPtr);
     return TCL_OK;
 }
 
@@ -3514,38 +3810,30 @@ NamespaceOriginCmd(dummy, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceParentCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceParentCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Namespace *nsPtr;
-    int result;
 
     if (objc == 2) {
-        nsPtr = Tcl_GetCurrentNamespace(interp);
+	nsPtr = TclGetCurrentNamespace(interp);
     } else if (objc == 3) {
-	result = GetNamespaceFromObj(interp, objv[2], &nsPtr);
-        if (result != TCL_OK) {
-            return result;
-        }
-        if (nsPtr == NULL) {
-            Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                    "unknown namespace \"", Tcl_GetString(objv[2]),
-		    "\" in namespace parent command", (char *) NULL);
-            return TCL_ERROR;
-        }
+	if (TclGetNamespaceFromObj(interp, objv[2], &nsPtr) != TCL_OK) {
+	    return TCL_ERROR;
+	}
     } else {
-        Tcl_WrongNumArgs(interp, 2, objv, "?name?");
-        return TCL_ERROR;
+	Tcl_WrongNumArgs(interp, 2, objv, "?name?");
+	return TCL_ERROR;
     }
 
     /*
@@ -3553,8 +3841,8 @@ NamespaceParentCmd(dummy, interp, objc, objv)
      */
 
     if (nsPtr->parentPtr != NULL) {
-        Tcl_SetStringObj(Tcl_GetObjResult(interp),
-	        nsPtr->parentPtr->fullName, -1);
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		nsPtr->parentPtr->fullName, -1));
     }
     return TCL_OK;
 }
@@ -3562,66 +3850,479 @@ NamespaceParentCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
+ * NamespacePathCmd --
+ *
+ *	Invoked to implement the "namespace path" command that reads and
+ *	writes the current namespace's command resolution path. Has one
+ *	optional argument: if present, it is a list of named namespaces to set
+ *	the path to, and if absent, the current path should be returned.
+ *	Handles the following syntax:
+ *
+ *	    namespace path ?nsList?
+ *
+ * Results:
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong
+ *	(most notably if the namespace list contains the name of something
+ *	other than a namespace). In the successful-exit case, may set the
+ *	interpreter result to the list of names of the namespaces on the
+ *	current namespace's path.
+ *
+ * Side effects:
+ *	May update the namespace path (triggering a recomputing of all command
+ *	names that depend on the namespace for resolution).
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NamespacePathCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Namespace *nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    int i, nsObjc, result = TCL_ERROR;
+    Tcl_Obj **nsObjv;
+    Tcl_Namespace **namespaceList = NULL;
+
+    if (objc > 3) {
+	Tcl_WrongNumArgs(interp, 2, objv, "?pathList?");
+	return TCL_ERROR;
+    }
+
+    /*
+     * If no path is given, return the current path.
+     */
+
+    if (objc == 2) {
+	/*
+	 * Not a very fast way to compute this, but easy to get right.
+	 */
+
+	for (i=0 ; i<nsPtr->commandPathLength ; i++) {
+	    if (nsPtr->commandPathArray[i].nsPtr != NULL) {
+		Tcl_AppendElement(interp,
+			nsPtr->commandPathArray[i].nsPtr->fullName);
+	    }
+	}
+	return TCL_OK;
+    }
+
+    /*
+     * There is a path given, so parse it into an array of namespace pointers.
+     */
+
+    if (TclListObjGetElements(interp, objv[2], &nsObjc, &nsObjv) != TCL_OK) {
+	goto badNamespace;
+    }
+    if (nsObjc != 0) {
+	namespaceList = (Tcl_Namespace **)
+		TclStackAlloc(interp, sizeof(Tcl_Namespace *) * nsObjc);
+
+	for (i=0 ; i<nsObjc ; i++) {
+	    if (TclGetNamespaceFromObj(interp, nsObjv[i],
+		    &namespaceList[i]) != TCL_OK) {
+		goto badNamespace;
+	    }
+	}
+    }
+
+    /*
+     * Now we have the list of valid namespaces, install it as the path.
+     */
+
+    TclSetNsPath(nsPtr, nsObjc, namespaceList);
+
+    result = TCL_OK;
+  badNamespace:
+    if (namespaceList != NULL) {
+	TclStackFree(interp, namespaceList);
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetNsPath --
+ *
+ *	Sets the namespace command name resolution path to the given list of
+ *	namespaces. If the list is empty (of zero length) the path is set to
+ *	empty and the default old-style behaviour of command name resolution
+ *	is used.
+ *
+ * Results:
+ *	nothing
+ *
+ * Side effects:
+ *	Invalidates the command name resolution caches for any command
+ *	resolved in the given namespace.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclSetNsPath(
+    Namespace *nsPtr,		/* Namespace whose path is to be set. */
+    int pathLength,		/* Length of pathAry. */
+    Tcl_Namespace *pathAry[])	/* Array of namespaces that are the path. */
+{
+    if (pathLength != 0) {
+	NamespacePathEntry *tmpPathArray = (NamespacePathEntry *)
+		ckalloc(sizeof(NamespacePathEntry) * pathLength);
+	int i;
+
+	for (i=0 ; i<pathLength ; i++) {
+	    tmpPathArray[i].nsPtr = (Namespace *) pathAry[i];
+	    tmpPathArray[i].creatorNsPtr = nsPtr;
+	    tmpPathArray[i].prevPtr = NULL;
+	    tmpPathArray[i].nextPtr =
+		    tmpPathArray[i].nsPtr->commandPathSourceList;
+	    if (tmpPathArray[i].nextPtr != NULL) {
+		tmpPathArray[i].nextPtr->prevPtr = &tmpPathArray[i];
+	    }
+	    tmpPathArray[i].nsPtr->commandPathSourceList = &tmpPathArray[i];
+	}
+	if (nsPtr->commandPathLength != 0) {
+	    UnlinkNsPath(nsPtr);
+	}
+	nsPtr->commandPathArray = tmpPathArray;
+    } else {
+	if (nsPtr->commandPathLength != 0) {
+	    UnlinkNsPath(nsPtr);
+	}
+    }
+
+    nsPtr->commandPathLength = pathLength;
+    nsPtr->cmdRefEpoch++;
+    nsPtr->resolverEpoch++;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UnlinkNsPath --
+ *
+ *	Delete the given namespace's command name resolution path. Only call
+ *	if the path is non-empty. Caller must reset the counter containing the
+ *	path size.
+ *
+ * Results:
+ *	nothing
+ *
+ * Side effects:
+ *	Deletes the array of path entries and unlinks those path entries from
+ *	the target namespace's list of interested namespaces.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UnlinkNsPath(
+    Namespace *nsPtr)
+{
+    int i;
+    for (i=0 ; i<nsPtr->commandPathLength ; i++) {
+	NamespacePathEntry *nsPathPtr = &nsPtr->commandPathArray[i];
+	if (nsPathPtr->prevPtr != NULL) {
+	    nsPathPtr->prevPtr->nextPtr = nsPathPtr->nextPtr;
+	}
+	if (nsPathPtr->nextPtr != NULL) {
+	    nsPathPtr->nextPtr->prevPtr = nsPathPtr->prevPtr;
+	}
+	if (nsPathPtr->nsPtr != NULL) {
+	    if (nsPathPtr->nsPtr->commandPathSourceList == nsPathPtr) {
+		nsPathPtr->nsPtr->commandPathSourceList = nsPathPtr->nextPtr;
+	    }
+	}
+    }
+    ckfree((char *) nsPtr->commandPathArray);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInvalidateNsPath --
+ *
+ *	Invalidate the name resolution caches for all names looked up in
+ *	namespaces whose name path includes the given namespace.
+ *
+ * Results:
+ *	nothing
+ *
+ * Side effects:
+ *	Increments the command reference epoch in each namespace whose path
+ *	includes the given namespace. This causes any cached resolved names
+ *	whose root cacheing context starts at that namespace to be recomputed
+ *	the next time they are used.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclInvalidateNsPath(
+    Namespace *nsPtr)
+{
+    NamespacePathEntry *nsPathPtr = nsPtr->commandPathSourceList;
+    while (nsPathPtr != NULL) {
+	if (nsPathPtr->nsPtr != NULL) {
+	    nsPathPtr->creatorNsPtr->cmdRefEpoch++;
+	}
+	nsPathPtr = nsPathPtr->nextPtr;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * NamespaceQualifiersCmd --
  *
  *	Invoked to implement the "namespace qualifiers" command that returns
  *	any leading namespace qualifiers in a string. These qualifiers are
  *	namespace names separated by "::"s. For example, for "::foo::p" this
- *	command returns "::foo", and for "::" it returns "". This command
- *	is the complement of the "namespace tail" command. Note that this
- *	command does not check whether the "namespace" names are, in fact,
- *	the names of currently defined namespaces. Handles the following
- *	syntax:
+ *	command returns "::foo", and for "::" it returns "". This command is
+ *	the complement of the "namespace tail" command. Note that this command
+ *	does not check whether the "namespace" names are, in fact, the names
+ *	of currently defined namespaces. Handles the following syntax:
  *
  *	    namespace qualifiers string
  *
  * Results:
- *	Returns TCL_OK if successful, and  TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceQualifiersCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceQualifiersCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register char *name, *p;
     int length;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 2, objv, "string");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
-     * Find the end of the string, then work backward and find
-     * the start of the last "::" qualifier.
+     * Find the end of the string, then work backward and find the start of
+     * the last "::" qualifier.
      */
 
-    name = Tcl_GetString(objv[2]);
+    name = TclGetString(objv[2]);
     for (p = name;  *p != '\0';  p++) {
 	/* empty body */
     }
     while (--p >= name) {
-        if ((*p == ':') && (p > name) && (*(p-1) == ':')) {
-	    p -= 2;		/* back up over the :: */
+	if ((*p == ':') && (p > name) && (*(p-1) == ':')) {
+	    p -= 2;			/* Back up over the :: */
 	    while ((p >= name) && (*p == ':')) {
-		p--;		/* back up over the preceeding : */
+		p--;			/* Back up over the preceeding : */
 	    }
 	    break;
-        }
+	}
     }
 
     if (p >= name) {
-        length = p-name+1;
-        Tcl_AppendToObj(Tcl_GetObjResult(interp), name, length);
+	length = p-name+1;
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(name, length));
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NamespaceUnknownCmd --
+ *
+ *	Invoked to implement the "namespace unknown" command (TIP 181) that
+ *	sets or queries a per-namespace unknown command handler. This handler
+ *	is called when command lookup fails (current and global ns). The
+ *	default handler for the global namespace is ::unknown. The default
+ *	handler for other namespaces is to call the global namespace unknown
+ *	handler. Passing an empty list results in resetting the handler to its
+ *	default.
+ *
+ *	    namespace unknown ?handler?
+ *
+ * Results:
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
+ *
+ * Side effects:
+ *	If no handler is specified, returns a result in the interpreter's
+ *	result object, otherwise it sets the unknown handler pointer in the
+ *	current namespace to the script fragment provided. If anything goes
+ *	wrong, the result is an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NamespaceUnknownCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Tcl_Namespace *currNsPtr;
+    Tcl_Obj *resultPtr;
+    int rc;
+
+    if (objc > 3) {
+	Tcl_WrongNumArgs(interp, 2, objv, "?script?");
+	return TCL_ERROR;
+    }
+
+    currNsPtr = TclGetCurrentNamespace(interp);
+
+    if (objc == 2) {
+	/*
+	 * Introspection - return the current namespace handler.
+	 */
+
+	resultPtr = Tcl_GetNamespaceUnknownHandler(interp, currNsPtr);
+	if (resultPtr == NULL) {
+	    TclNewObj(resultPtr);
+	}
+	Tcl_SetObjResult(interp, resultPtr);
+    } else {
+	rc = Tcl_SetNamespaceUnknownHandler(interp, currNsPtr, objv[2]);
+	if (rc == TCL_OK) {
+	    Tcl_SetObjResult(interp, objv[2]);
+	}
+	return rc;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetNamespaceUnknownHandler --
+ *
+ *	Returns the unknown command handler registered for the given
+ *	namespace.
+ *
+ * Results:
+ *	Returns the current unknown command handler, or NULL if none exists
+ *	for the namespace.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_GetNamespaceUnknownHandler(
+    Tcl_Interp *interp,		/* The interpreter in which the namespace
+				 * exists. */
+    Tcl_Namespace *nsPtr)	/* The namespace. */
+{
+    Namespace *currNsPtr = (Namespace *)nsPtr;
+
+    if (currNsPtr->unknownHandlerPtr == NULL &&
+	    currNsPtr == ((Interp *)interp)->globalNsPtr) {
+	/*
+	 * Default handler for global namespace is "::unknown". For all other
+	 * namespaces, it is NULL (which falls back on the global unknown
+	 * handler).
+	 */
+
+	TclNewLiteralStringObj(currNsPtr->unknownHandlerPtr, "::unknown");
+	Tcl_IncrRefCount(currNsPtr->unknownHandlerPtr);
+    }
+    return currNsPtr->unknownHandlerPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetNamespaceUnknownHandler --
+ *
+ *	Sets the unknown command handler for the given namespace to the
+ *	command prefix passed.
+ *
+ * Results:
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
+ *
+ * Side effects:
+ *	Sets the namespace unknown command handler. If the passed in handler
+ *	is NULL or an empty list, then the handler is reset to its default. If
+ *	an error occurs, then an error message is left in the interpreter
+ *	result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_SetNamespaceUnknownHandler(
+    Tcl_Interp *interp,		/* Interpreter in which the namespace
+				 * exists. */
+    Tcl_Namespace *nsPtr,	/* Namespace which is being updated. */
+    Tcl_Obj *handlerPtr)	/* The new handler, or NULL to reset. */
+{
+    int lstlen = 0;
+    Namespace *currNsPtr = (Namespace *)nsPtr;
+
+    /*
+     * Ensure that we check for errors *first* before we change anything.
+     */
+
+    if (handlerPtr != NULL) {
+	if (TclListObjLength(interp, handlerPtr, &lstlen) != TCL_OK) {
+	    /*
+	     * Not a list.
+	     */
+
+	    return TCL_ERROR;
+	}
+	if (lstlen > 0) {
+	    /*
+	     * We are going to be saving this handler. Increment the reference
+	     * count before decrementing the refcount on the previous handler,
+	     * so that nothing strange can happen if we are told to set the
+	     * handler to the previous value.
+	     */
+
+	    Tcl_IncrRefCount(handlerPtr);
+	}
+    }
+
+    /*
+     * Remove old handler next.
+     */
+
+    if (currNsPtr->unknownHandlerPtr != NULL) {
+	Tcl_DecrRefCount(currNsPtr->unknownHandlerPtr);
+    }
+
+    /*
+     * Install the new handler.
+     */
+
+    if (lstlen > 0) {
+	/*
+	 * Just store the handler. It already has the correct reference count.
+	 */
+
+	currNsPtr->unknownHandlerPtr = handlerPtr;
+    } else {
+	/*
+	 * If NULL or an empty list is passed, this resets to the default
+	 * handler.
+	 */
+
+	currNsPtr->unknownHandlerPtr = NULL;
     }
     return TCL_OK;
 }
@@ -3632,13 +4333,13 @@ NamespaceQualifiersCmd(dummy, interp, objc, objv)
  * NamespaceTailCmd --
  *
  *	Invoked to implement the "namespace tail" command that returns the
- *	trailing name at the end of a string with "::" namespace
- *	qualifiers. These qualifiers are namespace names separated by
- *	"::"s. For example, for "::foo::p" this command returns "p", and for
- *	"::" it returns "". This command is the complement of the "namespace
- *	qualifiers" command. Note that this command does not check whether
- *	the "namespace" names are, in fact, the names of currently defined
- *	namespaces. Handles the following syntax:
+ *	trailing name at the end of a string with "::" namespace qualifiers.
+ *	These qualifiers are namespace names separated by "::"s. For example,
+ *	for "::foo::p" this command returns "p", and for "::" it returns "".
+ *	This command is the complement of the "namespace qualifiers" command.
+ *	Note that this command does not check whether the "namespace" names
+ *	are, in fact, the names of currently defined namespaces. Handles the
+ *	following syntax:
  *
  *	    namespace tail string
  *
@@ -3646,44 +4347,44 @@ NamespaceQualifiersCmd(dummy, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceTailCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+NamespaceTailCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register char *name, *p;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 2, objv, "string");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
-     * Find the end of the string, then work backward and find the
-     * last "::" qualifier.
+     * Find the end of the string, then work backward and find the last "::"
+     * qualifier.
      */
 
-    name = Tcl_GetString(objv[2]);
+    name = TclGetString(objv[2]);
     for (p = name;  *p != '\0';  p++) {
 	/* empty body */
     }
     while (--p > name) {
-        if ((*p == ':') && (*(p-1) == ':')) {
-            p++;		/* just after the last "::" */
-            break;
-        }
+	if ((*p == ':') && (*(p-1) == ':')) {
+	    p++;			/* Just after the last "::" */
+	    break;
+	}
     }
-    
+
     if (p >= name) {
-        Tcl_AppendToObj(Tcl_GetObjResult(interp), p, -1);
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(p, -1));
     }
     return TCL_OK;
 }
@@ -3691,6 +4392,81 @@ NamespaceTailCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
+ * NamespaceUpvarCmd --
+ *
+ *	Invoked to implement the "namespace upvar" command, that creates
+ *	variables in the current scope linked to variables in another
+ *	namespace. Handles the following syntax:
+ *
+ *	    namespace upvar ns otherVar myVar ?otherVar myVar ...?
+ *
+ * Results:
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
+ *
+ * Side effects:
+ *	Creates new variables in the current scope, linked to the
+ *	corresponding variables in the stipulated nmamespace. If anything goes
+ *	wrong, the result is an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NamespaceUpvarCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Namespace *nsPtr, *savedNsPtr;
+    Var *otherPtr, *arrayPtr;
+    char *myName;
+
+    if (objc < 5 || !(objc & 1)) {
+	Tcl_WrongNumArgs(interp, 2, objv,
+		"ns otherVar myVar ?otherVar myVar ...?");
+	return TCL_ERROR;
+    }
+
+    if (TclGetNamespaceFromObj(interp, objv[2], &nsPtr) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    objc -= 3;
+    objv += 3;
+
+    for (; objc>0 ; objc-=2, objv+=2) {
+	/*
+	 * Locate the other variable
+	 */
+
+	savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr;
+	iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr;
+	otherPtr = TclObjLookupVarEx(interp, objv[0], NULL,
+		(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access",
+		/*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
+	iPtr->varFramePtr->nsPtr = (Namespace *) savedNsPtr;
+	if (otherPtr == NULL) {
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Create the new variable and link it to otherPtr.
+	 */
+
+	myName = TclGetString(objv[1]);
+	if (TclPtrMakeUpvar(interp, otherPtr, myName, 0, -1) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+    }
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * NamespaceWhichCmd --
  *
  *	Invoked to implement the "namespace which" command that returns the
@@ -3704,70 +4480,66 @@ NamespaceTailCmd(dummy, interp, objc, objv)
  *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	Returns a result in the interpreter's result object. If anything
- *	goes wrong, the result is an error message.
+ *	Returns a result in the interpreter's result object. If anything goes
+ *	wrong, the result is an error message.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-NamespaceWhichCmd(dummy, interp, objc, objv)
-    ClientData dummy;                   /* Not used. */
-    Tcl_Interp *interp;                 /* Current interpreter. */
-    int objc;                           /* Number of arguments. */
-    Tcl_Obj *CONST objv[];              /* Argument objects. */
+NamespaceWhichCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    register char *arg;
-    Tcl_Command cmd;
-    Tcl_Var variable;
-    int argIndex, lookup;
+    static const char *opts[] = {
+	"-command", "-variable", NULL
+    };
+    int lookupType = 0;
+    Tcl_Obj *resultPtr;
 
-    if (objc < 3) {
-        badArgs:
-        Tcl_WrongNumArgs(interp, 2, objv,
-	        "?-command? ?-variable? name");
-        return TCL_ERROR;
-    }
+    if (objc < 3 || objc > 4) {
+    badArgs:
+	Tcl_WrongNumArgs(interp, 2, objv, "?-command? ?-variable? name");
+	return TCL_ERROR;
+    } else if (objc == 4) {
+	/*
+	 * Look for a flag controlling the lookup.
+	 */
 
-    /*
-     * Look for a flag controlling the lookup.
-     */
+	if (Tcl_GetIndexFromObj(interp, objv[2], opts, "option", 0,
+		&lookupType) != TCL_OK) {
+	    /*
+	     * Preserve old style of error message!
+	     */
 
-    argIndex = 2;
-    lookup = 0;			/* assume command lookup by default */
-    arg = Tcl_GetString(objv[2]);
-    if (*arg == '-') {
-	if (strncmp(arg, "-command", 8) == 0) {
-	    lookup = 0;
-	} else if (strncmp(arg, "-variable", 9) == 0) {
-	    lookup = 1;
-	} else {
+	    Tcl_ResetResult(interp);
 	    goto badArgs;
 	}
-	argIndex = 3;
-    }
-    if (objc != (argIndex + 1)) {
-	goto badArgs;
     }
 
-    switch (lookup) {
-    case 0:			/* -command */
-	cmd = Tcl_GetCommandFromObj(interp, objv[argIndex]);
-        if (cmd == (Tcl_Command) NULL) {	
-            return TCL_OK;	/* cmd not found, just return (no error) */
-        }
-	Tcl_GetCommandFullName(interp, cmd, Tcl_GetObjResult(interp));
-        break;
+    TclNewObj(resultPtr);
+    switch (lookupType) {
+    case 0: {				/* -command */
+	Tcl_Command cmd = Tcl_GetCommandFromObj(interp, objv[objc-1]);
 
-    case 1:			/* -variable */
-        arg = Tcl_GetString(objv[argIndex]);
-	variable = Tcl_FindNamespaceVar(interp, arg, (Tcl_Namespace *) NULL,
-		/*flags*/ 0);
-        if (variable != (Tcl_Var) NULL) {
-            Tcl_GetVariableFullName(interp, variable, Tcl_GetObjResult(interp));
-        }
-        break;
+	if (cmd != NULL) {
+	    Tcl_GetCommandFullName(interp, cmd, resultPtr);
+	}
+	break;
     }
+    case 1: {				/* -variable */
+	Tcl_Var var = Tcl_FindNamespaceVar(interp,
+		TclGetString(objv[objc-1]), NULL, /*flags*/ 0);
+
+	if (var != NULL) {
+	    Tcl_GetVariableFullName(interp, var, resultPtr);
+	}
+	break;
+    }
+    }
+    Tcl_SetObjResult(interp, resultPtr);
     return TCL_OK;
 }
 
@@ -3783,45 +4555,44 @@ NamespaceWhichCmd(dummy, interp, objc, objv)
  *	None.
  *
  * Side effects:
- *	Decrements the ref count of any Namespace structure pointed
- *	to by the nsName's internal representation. If there are no more
- *	references to the namespace, it's structure will be freed.
+ *	Decrements the ref count of any Namespace structure pointed to by the
+ *	nsName's internal representation. If there are no more references to
+ *	the namespace, it's structure will be freed.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeNsNameInternalRep(objPtr)
-    register Tcl_Obj *objPtr;   /* nsName object with internal
-                                 * representation to free */
+FreeNsNameInternalRep(
+    register Tcl_Obj *objPtr)	/* nsName object with internal representation
+				 * to free. */
 {
-    register ResolvedNsName *resNamePtr =
-        (ResolvedNsName *) objPtr->internalRep.otherValuePtr;
+    register ResolvedNsName *resNamePtr = (ResolvedNsName *)
+	    objPtr->internalRep.twoPtrValue.ptr1;
     Namespace *nsPtr;
 
     /*
-     * Decrement the reference count of the namespace. If there are no
-     * more references, free it up.
+     * Decrement the reference count of the namespace. If there are no more
+     * references, free it up.
      */
 
-    if (resNamePtr != NULL) {
-        resNamePtr->refCount--;
-        if (resNamePtr->refCount == 0) {
+    resNamePtr->refCount--;
+    if (resNamePtr->refCount == 0) {
 
-            /*
-	     * Decrement the reference count for the cached namespace.  If
-	     * the namespace is dead, and there are no more references to
-	     * it, free it.
-	     */
+	/*
+	 * Decrement the reference count for the cached namespace. If the
+	 * namespace is dead, and there are no more references to it, free
+	 * it.
+	 */
 
-            nsPtr = resNamePtr->nsPtr;
-            nsPtr->refCount--;
-            if ((nsPtr->refCount == 0) && (nsPtr->flags & NS_DEAD)) {
-                NamespaceFree(nsPtr);
-            }
-            ckfree((char *) resNamePtr);
-        }
+	nsPtr = resNamePtr->nsPtr;
+	nsPtr->refCount--;
+	if ((nsPtr->refCount == 0) && (nsPtr->flags & NS_DEAD)) {
+	    NamespaceFree(nsPtr);
+	}
+	ckfree((char *) resNamePtr);
     }
+    objPtr->typePtr = NULL;
 }
 
 /*
@@ -3837,25 +4608,23 @@ FreeNsNameInternalRep(objPtr)
  *
  * Side effects:
  *	copyPtr's internal rep is set to refer to the same namespace
- *	referenced by srcPtr's internal rep. Increments the ref count of
- *	the ResolvedNsName structure used to hold the namespace reference.
+ *	referenced by srcPtr's internal rep. Increments the ref count of the
+ *	ResolvedNsName structure used to hold the namespace reference.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-DupNsNameInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;                /* Object with internal rep to copy. */
-    register Tcl_Obj *copyPtr;      /* Object with internal rep to set. */
+DupNsNameInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    register Tcl_Obj *copyPtr)	/* Object with internal rep to set. */
 {
-    register ResolvedNsName *resNamePtr =
-        (ResolvedNsName *) srcPtr->internalRep.otherValuePtr;
+    register ResolvedNsName *resNamePtr = (ResolvedNsName *)
+	    srcPtr->internalRep.twoPtrValue.ptr1;
 
-    copyPtr->internalRep.otherValuePtr = (VOID *) resNamePtr;
-    if (resNamePtr != NULL) {
-        resNamePtr->refCount++;
-    }
-    copyPtr->typePtr = &tclNsNameType;
+    copyPtr->internalRep.twoPtrValue.ptr1 = resNamePtr;
+    resNamePtr->refCount++;
+    copyPtr->typePtr = &nsNameType;
 }
 
 /*
@@ -3863,146 +4632,2349 @@ DupNsNameInternalRep(srcPtr, copyPtr)
  *
  * SetNsNameFromAny --
  *
- *	Attempt to generate a nsName internal representation for a
- *	Tcl object.
+ *	Attempt to generate a nsName internal representation for a Tcl object.
  *
  * Results:
- *	Returns TCL_OK if the value could be converted to a proper
- *	namespace reference. Otherwise, it returns TCL_ERROR, along
- *	with an error message in the interpreter's result object.
+ *	Returns TCL_OK if the value could be converted to a proper namespace
+ *	reference. Otherwise, it returns TCL_ERROR, along with an error
+ *	message in the interpreter's result object.
  *
  * Side effects:
- *	If successful, the object is made a nsName object. Its internal rep
- *	is set to point to a ResolvedNsName, which contains a cached pointer
- *	to the Namespace. Reference counts are kept on both the
- *	ResolvedNsName and the Namespace, so we can keep track of their
- *	usage and free them when appropriate.
+ *	If successful, the object is made a nsName object. Its internal rep is
+ *	set to point to a ResolvedNsName, which contains a cached pointer to
+ *	the Namespace. Reference counts are kept on both the ResolvedNsName
+ *	and the Namespace, so we can keep track of their usage and free them
+ *	when appropriate.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetNsNameFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Points to the namespace in which to
-				 * resolve name. Also used for error
-				 * reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
+SetNsNameFromAny(
+    Tcl_Interp *interp,		/* Points to the namespace in which to resolve
+				 * name. Also used for error reporting if not
+				 * NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    char *name;
-    CONST char *dummy;
+    const char *dummy;
     Namespace *nsPtr, *dummy1Ptr, *dummy2Ptr;
     register ResolvedNsName *resNamePtr;
+    const char *name;
 
     if (interp == NULL) {
 	return TCL_ERROR;
     }
 
+    name = TclGetString(objPtr);
+    TclGetNamespaceForQualName(interp, name, NULL, TCL_FIND_ONLY_NS,
+	     &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy);
+
+    /*
+     * If we found a namespace, then create a new ResolvedNsName structure
+     * that holds a reference to it.
+     */
+
+    if ((nsPtr == NULL) || (nsPtr->flags & NS_DYING)) {
+	/*
+	 * Our failed lookup proves any previously cached nsName intrep is no
+	 * longer valid. Get rid of it so we no longer waste memory storing
+	 * it, nor time determining its invalidity again and again.
+	 */
+
+	if (objPtr->typePtr == &nsNameType) {
+	    TclFreeIntRep(objPtr);
+	    objPtr->typePtr = NULL;
+	}
+	return TCL_ERROR;
+    }
+
+    nsPtr->refCount++;
+    resNamePtr = (ResolvedNsName *) ckalloc(sizeof(ResolvedNsName));
+    resNamePtr->nsPtr = nsPtr;
+    if ((name[0] == ':') && (name[1] == ':')) {
+	resNamePtr->refNsPtr = NULL;
+    } else {
+	resNamePtr->refNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+    }
+    resNamePtr->refCount = 1;
+    TclFreeIntRep(objPtr);
+    objPtr->internalRep.twoPtrValue.ptr1 = resNamePtr;
+    objPtr->typePtr = &nsNameType;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NamespaceEnsembleCmd --
+ *
+ *	Invoked to implement the "namespace ensemble" command that creates and
+ *	manipulates ensembles built on top of namespaces. Handles the
+ *	following syntax:
+ *
+ *	    namespace ensemble name ?dictionary?
+ *
+ * Results:
+ *	Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong.
+ *
+ * Side effects:
+ *	Creates the ensemble for the namespace if one did not previously
+ *	exist. Alternatively, alters the way that the ensemble's subcommand =>
+ *	implementation prefix is configured.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NamespaceEnsembleCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    Namespace *nsPtr;
+    Tcl_Command token;
+    static const char *subcommands[] = {
+	"configure", "create", "exists", NULL
+    };
+    enum EnsSubcmds {
+	ENS_CONFIG, ENS_CREATE, ENS_EXISTS
+    };
+    static const char *createOptions[] = {
+	"-command", "-map", "-prefixes", "-subcommands", "-unknown", NULL
+    };
+    enum EnsCreateOpts {
+	CRT_CMD, CRT_MAP, CRT_PREFIX, CRT_SUBCMDS, CRT_UNKNOWN
+    };
+    static const char *configOptions[] = {
+	"-map", "-namespace", "-prefixes", "-subcommands", "-unknown", NULL
+    };
+    enum EnsConfigOpts {
+	CONF_MAP, CONF_NAMESPACE, CONF_PREFIX, CONF_SUBCMDS, CONF_UNKNOWN
+    };
+    int index;
+
+    nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    if (nsPtr == NULL || nsPtr->flags & NS_DYING) {
+	if (!Tcl_InterpDeleted(interp)) {
+	    Tcl_AppendResult(interp,
+		    "tried to manipulate ensemble of deleted namespace", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 2, objv, "subcommand ?arg ...?");
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIndexFromObj(interp, objv[2], subcommands, "subcommand", 0,
+	    &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    switch ((enum EnsSubcmds) index) {
+    case ENS_CREATE: {
+	char *name;
+	Tcl_DictSearch search;
+	Tcl_Obj *listObj;
+	int done, len, allocatedMapFlag = 0;
+	/*
+	 * Defaults
+	 */
+	Tcl_Obj *subcmdObj = NULL;
+	Tcl_Obj *mapObj = NULL;
+	int permitPrefix = 1;
+	Tcl_Obj *unknownObj = NULL;
+
+	objv += 3;
+	objc -= 3;
+
+	/*
+	 * Work out what name to use for the command to create. If supplied,
+	 * it is either fully specified or relative to the current namespace.
+	 * If not supplied, it is exactly the name of the current namespace.
+	 */
+
+	name = nsPtr->fullName;
+
+	/*
+	 * Parse the option list, applying type checks as we go. Note that we
+	 * are not incrementing any reference counts in the objects at this
+	 * stage, so the presence of an option multiple times won't cause any
+	 * memory leaks.
+	 */
+
+	for (; objc>1 ; objc-=2,objv+=2 ) {
+	    if (Tcl_GetIndexFromObj(interp, objv[0], createOptions, "option",
+		    0, &index) != TCL_OK) {
+		if (allocatedMapFlag) {
+		    Tcl_DecrRefCount(mapObj);
+		}
+		return TCL_ERROR;
+	    }
+	    switch ((enum EnsCreateOpts) index) {
+	    case CRT_CMD:
+		name = TclGetString(objv[1]);
+		continue;
+	    case CRT_SUBCMDS:
+		if (TclListObjLength(interp, objv[1], &len) != TCL_OK) {
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    return TCL_ERROR;
+		}
+		subcmdObj = (len > 0 ? objv[1] : NULL);
+		continue;
+	    case CRT_MAP: {
+		Tcl_Obj *patchedDict = NULL, *subcmdObj;
+
+		/*
+		 * Verify that the map is sensible.
+		 */
+
+		if (Tcl_DictObjFirst(interp, objv[1], &search,
+			&subcmdObj, &listObj, &done) != TCL_OK) {
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    return TCL_ERROR;
+		}
+		if (done) {
+		    mapObj = NULL;
+		    continue;
+		}
+		do {
+		    Tcl_Obj **listv;
+		    char *cmd;
+
+		    if (TclListObjGetElements(interp, listObj, &len,
+			    &listv) != TCL_OK) {
+			Tcl_DictObjDone(&search);
+			if (patchedDict) {
+			    Tcl_DecrRefCount(patchedDict);
+			}
+			if (allocatedMapFlag) {
+			    Tcl_DecrRefCount(mapObj);
+			}
+			return TCL_ERROR;
+		    }
+		    if (len < 1) {
+			Tcl_SetResult(interp,
+				"ensemble subcommand implementations "
+				"must be non-empty lists", TCL_STATIC);
+			Tcl_DictObjDone(&search);
+			if (patchedDict) {
+			    Tcl_DecrRefCount(patchedDict);
+			}
+			if (allocatedMapFlag) {
+			    Tcl_DecrRefCount(mapObj);
+			}
+			return TCL_ERROR;
+		    }
+		    cmd = TclGetString(listv[0]);
+		    if (!(cmd[0] == ':' && cmd[1] == ':')) {
+			Tcl_Obj *newList = Tcl_NewListObj(len, listv);
+			Tcl_Obj *newCmd = Tcl_NewStringObj(nsPtr->fullName,-1);
+
+			if (nsPtr->parentPtr) {
+			    Tcl_AppendStringsToObj(newCmd, "::", NULL);
+			}
+			Tcl_AppendObjToObj(newCmd, listv[0]);
+			Tcl_ListObjReplace(NULL, newList, 0, 1, 1, &newCmd);
+			if (patchedDict == NULL) {
+			    patchedDict = Tcl_DuplicateObj(objv[1]);
+			}
+			Tcl_DictObjPut(NULL, patchedDict, subcmdObj, newList);
+		    }
+		    Tcl_DictObjNext(&search, &subcmdObj, &listObj, &done);
+		} while (!done);
+
+		if (allocatedMapFlag) {
+		    Tcl_DecrRefCount(mapObj);
+		}
+		mapObj = (patchedDict ? patchedDict : objv[1]);
+		if (patchedDict) {
+		    allocatedMapFlag = 1;
+		}
+		continue;
+	    }
+	    case CRT_PREFIX:
+		if (Tcl_GetBooleanFromObj(interp, objv[1],
+			&permitPrefix) != TCL_OK) {
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    return TCL_ERROR;
+		}
+		continue;
+	    case CRT_UNKNOWN:
+		if (TclListObjLength(interp, objv[1], &len) != TCL_OK) {
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    return TCL_ERROR;
+		}
+		unknownObj = (len > 0 ? objv[1] : NULL);
+		continue;
+	    }
+	}
+
+	/*
+	 * Create the ensemble. Note that this might delete another ensemble
+	 * linked to the same namespace, so we must be careful. However, we
+	 * should be OK because we only link the namespace into the list once
+	 * we've created it (and after any deletions have occurred.)
+	 */
+
+	token = Tcl_CreateEnsemble(interp, name, NULL,
+		(permitPrefix ? TCL_ENSEMBLE_PREFIX : 0));
+	Tcl_SetEnsembleSubcommandList(interp, token, subcmdObj);
+	Tcl_SetEnsembleMappingDict(interp, token, mapObj);
+	Tcl_SetEnsembleUnknownHandler(interp, token, unknownObj);
+
+	/*
+	 * Tricky! Must ensure that the result is not shared (command delete
+	 * traces could have corrupted the pristine object that we started
+	 * with). [Snit test rename-1.5]
+	 */
+
+	Tcl_ResetResult(interp);
+	Tcl_GetCommandFullName(interp, token, Tcl_GetObjResult(interp));
+	return TCL_OK;
+    }
+
+    case ENS_EXISTS:
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "cmdname");
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(
+		Tcl_FindEnsemble(interp, objv[3], 0) != NULL));
+	return TCL_OK;
+
+    case ENS_CONFIG:
+	if (objc < 4 || (objc != 5 && objc & 1)) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "cmdname ?opt? ?value? ...");
+	    return TCL_ERROR;
+	}
+	token = Tcl_FindEnsemble(interp, objv[3], TCL_LEAVE_ERR_MSG);
+	if (token == NULL) {
+	    return TCL_ERROR;
+	}
+
+	if (objc == 5) {
+	    Tcl_Obj *resultObj = NULL;		/* silence gcc 4 warning */
+
+	    if (Tcl_GetIndexFromObj(interp, objv[4], configOptions, "option",
+		    0, &index) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch ((enum EnsConfigOpts) index) {
+	    case CONF_SUBCMDS:
+		Tcl_GetEnsembleSubcommandList(NULL, token, &resultObj);
+		if (resultObj != NULL) {
+		    Tcl_SetObjResult(interp, resultObj);
+		}
+		break;
+	    case CONF_MAP:
+		Tcl_GetEnsembleMappingDict(NULL, token, &resultObj);
+		if (resultObj != NULL) {
+		    Tcl_SetObjResult(interp, resultObj);
+		}
+		break;
+	    case CONF_NAMESPACE: {
+		Tcl_Namespace *namespacePtr = NULL; /* silence gcc 4 warning */
+
+		Tcl_GetEnsembleNamespace(NULL, token, &namespacePtr);
+		Tcl_SetResult(interp, ((Namespace *)namespacePtr)->fullName,
+			TCL_VOLATILE);
+		break;
+	    }
+	    case CONF_PREFIX: {
+		int flags = 0;			/* silence gcc 4 warning */
+
+		Tcl_GetEnsembleFlags(NULL, token, &flags);
+		Tcl_SetObjResult(interp,
+			Tcl_NewBooleanObj(flags & TCL_ENSEMBLE_PREFIX));
+		break;
+	    }
+	    case CONF_UNKNOWN:
+		Tcl_GetEnsembleUnknownHandler(NULL, token, &resultObj);
+		if (resultObj != NULL) {
+		    Tcl_SetObjResult(interp, resultObj);
+		}
+		break;
+	    }
+	    return TCL_OK;
+
+	} else if (objc == 4) {
+	    /*
+	     * Produce list of all information.
+	     */
+
+	    Tcl_Obj *resultObj, *tmpObj = NULL;	/* silence gcc 4 warning */
+	    Tcl_Namespace *namespacePtr = NULL;	/* silence gcc 4 warning */
+	    int flags = 0;			/* silence gcc 4 warning */
+
+	    TclNewObj(resultObj);
+
+	    /* -map option */
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewStringObj(configOptions[CONF_MAP], -1));
+	    Tcl_GetEnsembleMappingDict(NULL, token, &tmpObj);
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    (tmpObj != NULL) ? tmpObj : Tcl_NewObj());
+
+	    /* -namespace option */
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewStringObj(configOptions[CONF_NAMESPACE], -1));
+	    Tcl_GetEnsembleNamespace(NULL, token, &namespacePtr);
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewStringObj(((Namespace *)namespacePtr)->fullName,
+		    -1));
+
+	    /* -prefix option */
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewStringObj(configOptions[CONF_PREFIX], -1));
+	    Tcl_GetEnsembleFlags(NULL, token, &flags);
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewBooleanObj(flags & TCL_ENSEMBLE_PREFIX));
+
+	    /* -subcommands option */
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewStringObj(configOptions[CONF_SUBCMDS], -1));
+	    Tcl_GetEnsembleSubcommandList(NULL, token, &tmpObj);
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    (tmpObj != NULL) ? tmpObj : Tcl_NewObj());
+
+	    /* -unknown option */
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    Tcl_NewStringObj(configOptions[CONF_UNKNOWN], -1));
+	    Tcl_GetEnsembleUnknownHandler(NULL, token, &tmpObj);
+	    Tcl_ListObjAppendElement(NULL, resultObj,
+		    (tmpObj != NULL) ? tmpObj : Tcl_NewObj());
+
+	    Tcl_SetObjResult(interp, resultObj);
+	    return TCL_OK;
+	} else {
+	    Tcl_DictSearch search;
+	    Tcl_Obj *listObj;
+	    int done, len, allocatedMapFlag = 0;
+	    Tcl_Obj *subcmdObj = NULL, *mapObj = NULL,
+		    *unknownObj = NULL; /* Defaults, silence gcc 4 warnings */
+	    int permitPrefix, flags = 0;	/* silence gcc 4 warning */
+
+	    Tcl_GetEnsembleSubcommandList(NULL, token, &subcmdObj);
+	    Tcl_GetEnsembleMappingDict(NULL, token, &mapObj);
+	    Tcl_GetEnsembleUnknownHandler(NULL, token, &unknownObj);
+	    Tcl_GetEnsembleFlags(NULL, token, &flags);
+	    permitPrefix = (flags & TCL_ENSEMBLE_PREFIX) != 0;
+
+	    objv += 4;
+	    objc -= 4;
+
+	    /*
+	     * Parse the option list, applying type checks as we go. Note that
+	     * we are not incrementing any reference counts in the objects at
+	     * this stage, so the presence of an option multiple times won't
+	     * cause any memory leaks.
+	     */
+
+	    for (; objc>0 ; objc-=2,objv+=2 ) {
+		if (Tcl_GetIndexFromObj(interp, objv[0], configOptions,
+			"option", 0, &index) != TCL_OK) {
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    return TCL_ERROR;
+		}
+		switch ((enum EnsConfigOpts) index) {
+		case CONF_SUBCMDS:
+		    if (TclListObjLength(interp, objv[1], &len) != TCL_OK) {
+			if (allocatedMapFlag) {
+			    Tcl_DecrRefCount(mapObj);
+			}
+			return TCL_ERROR;
+		    }
+		    subcmdObj = (len > 0 ? objv[1] : NULL);
+		    continue;
+		case CONF_MAP: {
+		    Tcl_Obj *patchedDict = NULL, *subcmdObj;
+
+		    /*
+		     * Verify that the map is sensible.
+		     */
+
+		    if (Tcl_DictObjFirst(interp, objv[1], &search,
+			    &subcmdObj, &listObj, &done) != TCL_OK) {
+			if (allocatedMapFlag) {
+			    Tcl_DecrRefCount(mapObj);
+			}
+			return TCL_ERROR;
+		    }
+		    if (done) {
+			mapObj = NULL;
+			continue;
+		    }
+		    do {
+			Tcl_Obj **listv;
+			char *cmd;
+
+			if (TclListObjGetElements(interp, listObj, &len,
+				&listv) != TCL_OK) {
+			    Tcl_DictObjDone(&search);
+			    if (patchedDict) {
+				Tcl_DecrRefCount(patchedDict);
+			    }
+			    if (allocatedMapFlag) {
+				Tcl_DecrRefCount(mapObj);
+			    }
+			    return TCL_ERROR;
+			}
+			if (len < 1) {
+			    Tcl_SetResult(interp,
+				    "ensemble subcommand implementations "
+				    "must be non-empty lists", TCL_STATIC);
+			    Tcl_DictObjDone(&search);
+			    if (patchedDict) {
+				Tcl_DecrRefCount(patchedDict);
+			    }
+			    if (allocatedMapFlag) {
+				Tcl_DecrRefCount(mapObj);
+			    }
+			    return TCL_ERROR;
+			}
+			cmd = TclGetString(listv[0]);
+			if (!(cmd[0] == ':' && cmd[1] == ':')) {
+			    Tcl_Obj *newList = Tcl_NewListObj(len, listv);
+			    Tcl_Obj *newCmd =
+				    Tcl_NewStringObj(nsPtr->fullName, -1);
+			    if (nsPtr->parentPtr) {
+				Tcl_AppendStringsToObj(newCmd, "::", NULL);
+			    }
+			    Tcl_AppendObjToObj(newCmd, listv[0]);
+			    Tcl_ListObjReplace(NULL, newList, 0,1, 1,&newCmd);
+			    if (patchedDict == NULL) {
+				patchedDict = Tcl_DuplicateObj(objv[1]);
+			    }
+			    Tcl_DictObjPut(NULL, patchedDict, subcmdObj,
+				    newList);
+			}
+			Tcl_DictObjNext(&search, &subcmdObj, &listObj, &done);
+		    } while (!done);
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    mapObj = (patchedDict ? patchedDict : objv[1]);
+		    if (patchedDict) {
+			allocatedMapFlag = 1;
+		    }
+		    continue;
+		}
+		case CONF_NAMESPACE:
+		    if (allocatedMapFlag) {
+			Tcl_DecrRefCount(mapObj);
+		    }
+		    Tcl_AppendResult(interp, "option -namespace is read-only",
+			    NULL);
+		    return TCL_ERROR;
+		case CONF_PREFIX:
+		    if (Tcl_GetBooleanFromObj(interp, objv[1],
+			    &permitPrefix) != TCL_OK) {
+			if (allocatedMapFlag) {
+			    Tcl_DecrRefCount(mapObj);
+			}
+			return TCL_ERROR;
+		    }
+		    continue;
+		case CONF_UNKNOWN:
+		    if (TclListObjLength(interp, objv[1], &len) != TCL_OK) {
+			if (allocatedMapFlag) {
+			    Tcl_DecrRefCount(mapObj);
+			}
+			return TCL_ERROR;
+		    }
+		    unknownObj = (len > 0 ? objv[1] : NULL);
+		    continue;
+		}
+	    }
+
+	    /*
+	     * Update the namespace now that we've finished the parsing stage.
+	     */
+
+	    flags = (permitPrefix ? flags|TCL_ENSEMBLE_PREFIX
+		    : flags&~TCL_ENSEMBLE_PREFIX);
+	    Tcl_SetEnsembleSubcommandList(interp, token, subcmdObj);
+	    Tcl_SetEnsembleMappingDict(interp, token, mapObj);
+	    Tcl_SetEnsembleUnknownHandler(interp, token, unknownObj);
+	    Tcl_SetEnsembleFlags(interp, token, flags);
+	    return TCL_OK;
+	}
+
+    default:
+	Tcl_Panic("unexpected ensemble command");
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CreateEnsemble --
+ *
+ *	Create a simple ensemble attached to the given namespace.
+ *
+ * Results:
+ *	The token for the command created.
+ *
+ * Side effects:
+ *	The ensemble is created and marked for compilation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Command
+Tcl_CreateEnsemble(
+    Tcl_Interp *interp,
+    const char *name,
+    Tcl_Namespace *namespacePtr,
+    int flags)
+{
+    Namespace *nsPtr = (Namespace *) namespacePtr;
+    EnsembleConfig *ensemblePtr = (EnsembleConfig *)
+	    ckalloc(sizeof(EnsembleConfig));
+    Tcl_Obj *nameObj = NULL;
+
+    if (nsPtr == NULL) {
+	nsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    }
+
+    /*
+     * Make the name of the ensemble into a fully qualified name. This might
+     * allocate a temporary object.
+     */
+
+    if (!(name[0] == ':' && name[1] == ':')) {
+	nameObj = Tcl_NewStringObj(nsPtr->fullName, -1);
+	if (nsPtr->parentPtr == NULL) {
+	    Tcl_AppendStringsToObj(nameObj, name, NULL);
+	} else {
+	    Tcl_AppendStringsToObj(nameObj, "::", name, NULL);
+	}
+	Tcl_IncrRefCount(nameObj);
+	name = TclGetString(nameObj);
+    }
+
+    ensemblePtr->nsPtr = nsPtr;
+    ensemblePtr->epoch = 0;
+    Tcl_InitHashTable(&ensemblePtr->subcommandTable, TCL_STRING_KEYS);
+    ensemblePtr->subcommandArrayPtr = NULL;
+    ensemblePtr->subcmdList = NULL;
+    ensemblePtr->subcommandDict = NULL;
+    ensemblePtr->flags = flags;
+    ensemblePtr->unknownHandler = NULL;
+    ensemblePtr->token = Tcl_CreateObjCommand(interp, name,
+	    NsEnsembleImplementationCmd, ensemblePtr, DeleteEnsembleConfig);
+    ensemblePtr->next = (EnsembleConfig *) nsPtr->ensembles;
+    nsPtr->ensembles = (Tcl_Ensemble *) ensemblePtr;
+
     /*
-     * Get the string representation. Make it up-to-date if necessary.
+     * Trigger an eventual recomputation of the ensemble command set. Note
+     * that this is slightly tricky, as it means that we are not actually
+     * counting the number of namespace export actions, but it is the simplest
+     * way to go!
      */
 
-    name = objPtr->bytes;
-    if (name == NULL) {
-	name = Tcl_GetString(objPtr);
+    nsPtr->exportLookupEpoch++;
+
+    if (flags & ENSEMBLE_COMPILE) {
+	((Command *) ensemblePtr->token)->compileProc = TclCompileEnsemble;
+    }
+
+    if (nameObj != NULL) {
+	TclDecrRefCount(nameObj);
+    }
+    return ensemblePtr->token;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetEnsembleSubcommandList --
+ *
+ *	Set the subcommand list for a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an ensemble
+ *	or the subcommand list - if non-NULL - is not a list).
+ *
+ * Side effects:
+ *	The ensemble is updated and marked for recompilation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_SetEnsembleSubcommandList(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Obj *subcmdList)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+    Tcl_Obj *oldList;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	return TCL_ERROR;
+    }
+    if (subcmdList != NULL) {
+	int length;
+
+	if (TclListObjLength(interp, subcmdList, &length) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (length < 1) {
+	    subcmdList = NULL;
+	}
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    oldList = ensemblePtr->subcmdList;
+    ensemblePtr->subcmdList = subcmdList;
+    if (subcmdList != NULL) {
+	Tcl_IncrRefCount(subcmdList);
+    }
+    if (oldList != NULL) {
+	TclDecrRefCount(oldList);
     }
 
     /*
-     * Look for the namespace "name" in the current namespace. If there is
-     * an error parsing the (possibly qualified) name, return an error.
-     * If the namespace isn't found, we convert the object to an nsName
-     * object with a NULL ResolvedNsName* internal rep.
+     * Trigger an eventual recomputation of the ensemble command set. Note
+     * that this is slightly tricky, as it means that we are not actually
+     * counting the number of namespace export actions, but it is the simplest
+     * way to go!
      */
 
-    TclGetNamespaceForQualName(interp, name, (Namespace *) NULL,
-            FIND_ONLY_NS, &nsPtr, &dummy1Ptr, &dummy2Ptr, &dummy);
+    ensemblePtr->nsPtr->exportLookupEpoch++;
 
     /*
-     * If we found a namespace, then create a new ResolvedNsName structure
-     * that holds a reference to it.
+     * Special hack to make compiling of [info exists] work when the
+     * dictionary is modified.
      */
 
-    if (nsPtr != NULL) {
-	Namespace *currNsPtr =
-	        (Namespace *) Tcl_GetCurrentNamespace(interp);
-	
-        nsPtr->refCount++;
-        resNamePtr = (ResolvedNsName *) ckalloc(sizeof(ResolvedNsName));
-        resNamePtr->nsPtr = nsPtr;
-        resNamePtr->nsId = nsPtr->nsId;
-        resNamePtr->refNsPtr = currNsPtr;
-        resNamePtr->refCount = 1;
-    } else {
-        resNamePtr = NULL;
+    if (cmdPtr->compileProc != NULL) {
+	((Interp *)interp)->compileEpoch++;
+    }
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetEnsembleMappingDict --
+ *
+ *	Set the mapping dictionary for a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an ensemble
+ *	or the mapping - if non-NULL - is not a dict).
+ *
+ * Side effects:
+ *	The ensemble is updated and marked for recompilation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_SetEnsembleMappingDict(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Obj *mapDict)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+    Tcl_Obj *oldDict;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	return TCL_ERROR;
     }
+    if (mapDict != NULL) {
+	int size, done;
+	Tcl_DictSearch search;
+	Tcl_Obj *valuePtr;
+
+	if (Tcl_DictObjSize(interp, mapDict, &size) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+
+	for (Tcl_DictObjFirst(NULL, mapDict, &search, NULL, &valuePtr, &done);
+		!done; Tcl_DictObjNext(&search, NULL, &valuePtr, &done)) {
+	    Tcl_Obj *cmdPtr;
+	    const char *bytes;
+
+	    if (Tcl_ListObjIndex(interp, valuePtr, 0, &cmdPtr) != TCL_OK) {
+		Tcl_DictObjDone(&search);
+		return TCL_ERROR;
+	    }
+	    bytes = TclGetString(cmdPtr);
+	    if (bytes[0] != ':' || bytes[1] != ':') {
+		Tcl_AppendResult(interp,
+			"ensemble target is not a fully-qualified command",
+			NULL);
+		Tcl_DictObjDone(&search);
+		return TCL_ERROR;
+	    }
+	}
+
+	if (size < 1) {
+	    mapDict = NULL;
+	}
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    oldDict = ensemblePtr->subcommandDict;
+    ensemblePtr->subcommandDict = mapDict;
+    if (mapDict != NULL) {
+	Tcl_IncrRefCount(mapDict);
+    }
+    if (oldDict != NULL) {
+	TclDecrRefCount(oldDict);
+    }
+
+    /*
+     * Trigger an eventual recomputation of the ensemble command set. Note
+     * that this is slightly tricky, as it means that we are not actually
+     * counting the number of namespace export actions, but it is the simplest
+     * way to go!
+     */
+
+    ensemblePtr->nsPtr->exportLookupEpoch++;
 
     /*
-     * Free the old internalRep before setting the new one.
-     * We do this as late as possible to allow the conversion code
-     * (in particular, Tcl_GetStringFromObj) to use that old internalRep.
+     * Special hack to make compiling of [info exists] work when the
+     * dictionary is modified.
      */
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-        oldTypePtr->freeIntRepProc(objPtr);
+    if (cmdPtr->compileProc != NULL) {
+	((Interp *)interp)->compileEpoch++;
     }
 
-    objPtr->internalRep.otherValuePtr = (VOID *) resNamePtr;
-    objPtr->typePtr = &tclNsNameType;
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * UpdateStringOfNsName --
+ * Tcl_SetEnsembleUnknownHandler --
  *
- *	Updates the string representation for a nsName object.
- *	Note: This procedure does not free an existing old string rep
- *	so storage will be lost if this has not already been done.
+ *	Set the unknown handler for a particular ensemble.
  *
  * Results:
- *	None.
+ *	Tcl result code (error if command token does not indicate an ensemble
+ *	or the unknown handler - if non-NULL - is not a list).
+ *
+ * Side effects:
+ *	The ensemble is updated and marked for recompilation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_SetEnsembleUnknownHandler(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Obj *unknownList)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+    Tcl_Obj *oldList;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	return TCL_ERROR;
+    }
+    if (unknownList != NULL) {
+	int length;
+
+	if (TclListObjLength(interp, unknownList, &length) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (length < 1) {
+	    unknownList = NULL;
+	}
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    oldList = ensemblePtr->unknownHandler;
+    ensemblePtr->unknownHandler = unknownList;
+    if (unknownList != NULL) {
+	Tcl_IncrRefCount(unknownList);
+    }
+    if (oldList != NULL) {
+	TclDecrRefCount(oldList);
+    }
+
+    /*
+     * Trigger an eventual recomputation of the ensemble command set. Note
+     * that this is slightly tricky, as it means that we are not actually
+     * counting the number of namespace export actions, but it is the simplest
+     * way to go!
+     */
+
+    ensemblePtr->nsPtr->exportLookupEpoch++;
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetEnsembleFlags --
+ *
+ *	Set the flags for a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an
+ *	ensemble).
+ *
+ * Side effects:
+ *	The ensemble is updated and marked for recompilation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_SetEnsembleFlags(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    int flags)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+    int wasCompiled;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	return TCL_ERROR;
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    wasCompiled = ensemblePtr->flags & ENSEMBLE_COMPILE;
+
+    /*
+     * This API refuses to set the ENS_DEAD flag...
+     */
+
+    ensemblePtr->flags &= ENS_DEAD;
+    ensemblePtr->flags |= flags & ~ENS_DEAD;
+
+    /*
+     * Trigger an eventual recomputation of the ensemble command set. Note
+     * that this is slightly tricky, as it means that we are not actually
+     * counting the number of namespace export actions, but it is the simplest
+     * way to go!
+     */
+
+    ensemblePtr->nsPtr->exportLookupEpoch++;
+
+    /*
+     * If the ENSEMBLE_COMPILE flag status was changed, install or remove the
+     * compiler function and bump the interpreter's compilation epoch so that
+     * bytecode gets regenerated.
+     */
+
+    if (flags & ENSEMBLE_COMPILE) {
+	if (!wasCompiled) {
+	    ((Command*) ensemblePtr->token)->compileProc = TclCompileEnsemble;
+	    ((Interp *) interp)->compileEpoch++;
+	}
+    } else {
+	if (wasCompiled) {
+	    ((Command*) ensemblePtr->token)->compileProc = NULL;
+	    ((Interp *) interp)->compileEpoch++;
+	}
+    }
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetEnsembleSubcommandList --
+ *
+ *	Get the list of subcommands associated with a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an
+ *	ensemble). The list of subcommands is returned by updating the
+ *	variable pointed to by the last parameter (NULL if this is to be
+ *	derived from the mapping dictionary or the associated namespace's
+ *	exported commands).
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetEnsembleSubcommandList(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Obj **subcmdListPtr)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    *subcmdListPtr = ensemblePtr->subcmdList;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetEnsembleMappingDict --
+ *
+ *	Get the command mapping dictionary associated with a particular
+ *	ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an
+ *	ensemble). The mapping dict is returned by updating the variable
+ *	pointed to by the last parameter (NULL if none is installed).
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetEnsembleMappingDict(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Obj **mapDictPtr)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    *mapDictPtr = ensemblePtr->subcommandDict;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetEnsembleUnknownHandler --
+ *
+ *	Get the unknown handler associated with a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an
+ *	ensemble). The unknown handler is returned by updating the variable
+ *	pointed to by the last parameter (NULL if no handler is installed).
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetEnsembleUnknownHandler(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Obj **unknownListPtr)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    *unknownListPtr = ensemblePtr->unknownHandler;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetEnsembleFlags --
+ *
+ *	Get the flags for a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an
+ *	ensemble). The flags are returned by updating the variable pointed to
+ *	by the last parameter.
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetEnsembleFlags(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    int *flagsPtr)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    *flagsPtr = ensemblePtr->flags;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetEnsembleNamespace --
+ *
+ *	Get the namespace associated with a particular ensemble.
+ *
+ * Results:
+ *	Tcl result code (error if command token does not indicate an
+ *	ensemble). Namespace is returned by updating the variable pointed to
+ *	by the last parameter.
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetEnsembleNamespace(
+    Tcl_Interp *interp,
+    Tcl_Command token,
+    Tcl_Namespace **namespacePtrPtr)
+{
+    Command *cmdPtr = (Command *) token;
+    EnsembleConfig *ensemblePtr;
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	if (interp != NULL) {
+	    Tcl_AppendResult(interp, "command is not an ensemble", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    ensemblePtr = cmdPtr->objClientData;
+    *namespacePtrPtr = (Tcl_Namespace *) ensemblePtr->nsPtr;
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FindEnsemble --
+ *
+ *	Given a command name, get the ensemble token for it, allowing for
+ *	[namespace import]s. [Bug 1017022]
+ *
+ * Results:
+ *	The token for the ensemble command with the given name, or NULL if the
+ *	command either does not exist or is not an ensemble (when an error
+ *	message will be written into the interp if thats non-NULL).
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Command
+Tcl_FindEnsemble(
+    Tcl_Interp *interp,		/* Where to do the lookup, and where to write
+				 * the errors if TCL_LEAVE_ERR_MSG is set in
+				 * the flags. */
+    Tcl_Obj *cmdNameObj,	/* Name of command to look up. */
+    int flags)			/* Either 0 or TCL_LEAVE_ERR_MSG; other flags
+				 * are probably not useful. */
+{
+    Command *cmdPtr;
+
+    cmdPtr = (Command *)
+	    Tcl_FindCommand(interp, TclGetString(cmdNameObj), NULL, flags);
+    if (cmdPtr == NULL) {
+	return NULL;
+    }
+
+    if (cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	/*
+	 * Reuse existing infrastructure for following import link chains
+	 * rather than duplicating it.
+	 */
+
+	cmdPtr = (Command *) TclGetOriginalCommand((Tcl_Command) cmdPtr);
+
+	if (cmdPtr == NULL || cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	    if (flags & TCL_LEAVE_ERR_MSG) {
+		Tcl_AppendResult(interp, "\"", TclGetString(cmdNameObj),
+			"\" is not an ensemble command", NULL);
+		Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ENSEMBLE",
+			TclGetString(cmdNameObj), NULL);
+	    }
+	    return NULL;
+	}
+    }
+
+    return (Tcl_Command) cmdPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_IsEnsemble --
+ *
+ *	Simple test for ensemble-hood that takes into account imported
+ *	ensemble commands as well.
+ *
+ * Results:
+ *	Boolean value
+ *
+ * Side effects:
+ *	None
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_IsEnsemble(
+    Tcl_Command token)
+{
+    Command *cmdPtr = (Command *) token;
+    if (cmdPtr->objProc == NsEnsembleImplementationCmd) {
+	return 1;
+    }
+    cmdPtr = (Command *) TclGetOriginalCommand((Tcl_Command) cmdPtr);
+    if (cmdPtr == NULL || cmdPtr->objProc != NsEnsembleImplementationCmd) {
+	return 0;
+    }
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclMakeEnsemble --
+ *
+ *	Create an ensemble from a table of implementation commands. The
+ *	ensemble will be subject to (limited) compilation if any of the
+ *	implementation commands are compilable.
+ *
+ * Results:
+ *	Handle for the ensemble, or NULL if creation of it fails.
+ *
+ * Side effects:
+ *	May advance bytecode compilation epoch.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Command
+TclMakeEnsemble(
+    Tcl_Interp *interp,
+    const char *name,
+    const EnsembleImplMap map[])
+{
+    Tcl_Command ensemble;	/* The overall ensemble. */
+    Tcl_Namespace *tclNsPtr;	/* Reference to the "::tcl" namespace. */
+    Tcl_DString buf;
+
+    tclNsPtr = Tcl_FindNamespace(interp, "::tcl", NULL,
+	    TCL_CREATE_NS_IF_UNKNOWN);
+    if (tclNsPtr == NULL) {
+	Tcl_Panic("unable to find or create ::tcl namespace!");
+    }
+    Tcl_DStringInit(&buf);
+    Tcl_DStringAppend(&buf, "::tcl::", -1);
+    Tcl_DStringAppend(&buf, name, -1);
+    tclNsPtr = Tcl_FindNamespace(interp, Tcl_DStringValue(&buf), NULL,
+	    TCL_CREATE_NS_IF_UNKNOWN);
+    if (tclNsPtr == NULL) {
+	Tcl_Panic("unable to find or create %s namespace!",
+		Tcl_DStringValue(&buf));
+    }
+    ensemble = Tcl_CreateEnsemble(interp, Tcl_DStringValue(&buf)+5, tclNsPtr,
+	    TCL_ENSEMBLE_PREFIX);
+    Tcl_DStringAppend(&buf, "::", -1);
+    if (ensemble != NULL) {
+	Tcl_Obj *mapDict;
+	int i, compile = 0;
+
+	TclNewObj(mapDict);
+	for (i=0 ; map[i].name != NULL ; i++) {
+	    Tcl_Obj *fromObj, *toObj;
+	    Command *cmdPtr;
+
+	    fromObj = Tcl_NewStringObj(map[i].name, -1);
+	    TclNewStringObj(toObj, Tcl_DStringValue(&buf),
+		    Tcl_DStringLength(&buf));
+	    Tcl_AppendToObj(toObj, map[i].name, -1);
+	    Tcl_DictObjPut(NULL, mapDict, fromObj, toObj);
+	    cmdPtr = (Command *) Tcl_CreateObjCommand(interp,
+		    TclGetString(toObj), map[i].proc, NULL, NULL);
+	    cmdPtr->compileProc = map[i].compileProc;
+	    compile |= (map[i].compileProc != NULL);
+	}
+	Tcl_SetEnsembleMappingDict(interp, ensemble, mapDict);
+	if (compile) {
+	    Tcl_SetEnsembleFlags(interp, ensemble,
+		    TCL_ENSEMBLE_PREFIX | ENSEMBLE_COMPILE);
+	}
+    }
+    Tcl_DStringFree(&buf);
+
+    return ensemble;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NsEnsembleImplementationCmd --
+ *
+ *	Implements an ensemble of commands (being those exported by a
+ *	namespace other than the global namespace) as a command with the same
+ *	(short) name as the namespace in the parent namespace.
+ *
+ * Results:
+ *	A standard Tcl result code. Will be TCL_ERROR if the command is not an
+ *	unambiguous prefix of any command exported by the ensemble's
+ *	namespace.
+ *
+ * Side effects:
+ *	Depends on the command within the namespace that gets executed. If the
+ *	ensemble itself returns TCL_ERROR, a descriptive error message will be
+ *	placed in the interpreter's result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NsEnsembleImplementationCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    EnsembleConfig *ensemblePtr = clientData;
+				/* The ensemble itself. */
+    Tcl_Obj **tempObjv;		/* Space used to construct the list of
+				 * arguments to pass to the command that
+				 * implements the ensemble subcommand. */
+    int result;			/* The result of the subcommand execution. */
+    Tcl_Obj *prefixObj;		/* An object containing the prefix words of
+				 * the command that implements the
+				 * subcommand. */
+    Tcl_HashEntry *hPtr;	/* Used for efficient lookup of fully
+				 * specified but not yet cached command
+				 * names. */
+    Tcl_Obj **prefixObjv;	/* The list of objects to substitute in as the
+				 * target command prefix. */
+    int prefixObjc;		/* Size of prefixObjv of course! */
+    int reparseCount = 0;	/* Number of reparses. */
+
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?argument ...?");
+	return TCL_ERROR;
+    }
+
+  restartEnsembleParse:
+    if (ensemblePtr->nsPtr->flags & NS_DYING) {
+	/*
+	 * Don't know how we got here, but make things give up quickly.
+	 */
+
+	if (!Tcl_InterpDeleted(interp)) {
+	    Tcl_AppendResult(interp,
+		    "ensemble activated for deleted namespace", NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    /*
+     * Determine if the table of subcommands is right. If so, we can just look
+     * up in there and go straight to dispatch.
+     */
+
+    if (ensemblePtr->epoch == ensemblePtr->nsPtr->exportLookupEpoch) {
+	/*
+	 * Table of subcommands is still valid; therefore there might be a
+	 * valid cache of discovered information which we can reuse. Do the
+	 * check here, and if we're still valid, we can jump straight to the
+	 * part where we do the invocation of the subcommand.
+	 */
+
+	if (objv[1]->typePtr == &tclEnsembleCmdType) {
+	    EnsembleCmdRep *ensembleCmd = objv[1]->internalRep.twoPtrValue.ptr1;
+
+	    if (ensembleCmd->nsPtr == ensemblePtr->nsPtr &&
+		    ensembleCmd->epoch == ensemblePtr->epoch &&
+		    ensembleCmd->token == ensemblePtr->token) {
+		prefixObj = ensembleCmd->realPrefixObj;
+		Tcl_IncrRefCount(prefixObj);
+		goto runResultingSubcommand;
+	    }
+	}
+    } else {
+	BuildEnsembleConfig(ensemblePtr);
+	ensemblePtr->epoch = ensemblePtr->nsPtr->exportLookupEpoch;
+    }
+
+    /*
+     * Look in the hashtable for the subcommand name; this is the fastest way
+     * of all.
+     */
+
+    hPtr = Tcl_FindHashEntry(&ensemblePtr->subcommandTable,
+	    TclGetString(objv[1]));
+    if (hPtr != NULL) {
+	char *fullName = Tcl_GetHashKey(&ensemblePtr->subcommandTable, hPtr);
+
+	prefixObj = Tcl_GetHashValue(hPtr);
+
+	/*
+	 * Cache for later in the subcommand object.
+	 */
+
+	MakeCachedEnsembleCommand(objv[1], ensemblePtr, fullName, prefixObj);
+    } else if (!(ensemblePtr->flags & TCL_ENSEMBLE_PREFIX)) {
+	/*
+	 * Could not map, no prefixing, go to unknown/error handling.
+	 */
+
+	goto unknownOrAmbiguousSubcommand;
+    } else {
+	/*
+	 * If we've not already confirmed the command with the hash as part of
+	 * building our export table, we need to scan the sorted array for
+	 * matches.
+	 */
+
+	char *subcmdName;	/* Name of the subcommand, or unique prefix of
+				 * it (will be an error for a non-unique
+				 * prefix). */
+	char *fullName = NULL;	/* Full name of the subcommand. */
+	int stringLength, i;
+	int tableLength = ensemblePtr->subcommandTable.numEntries;
+
+	subcmdName = TclGetString(objv[1]);
+	stringLength = objv[1]->length;
+	for (i=0 ; i<tableLength ; i++) {
+	    register int cmp = strncmp(subcmdName,
+		    ensemblePtr->subcommandArrayPtr[i],
+		    (unsigned) stringLength);
+
+	    if (cmp == 0) {
+		if (fullName != NULL) {
+		    /*
+		     * Since there's never the exact-match case to worry about
+		     * (hash search filters this), getting here indicates that
+		     * our subcommand is an ambiguous prefix of (at least) two
+		     * exported subcommands, which is an error case.
+		     */
+
+		    goto unknownOrAmbiguousSubcommand;
+		}
+		fullName = ensemblePtr->subcommandArrayPtr[i];
+	    } else if (cmp < 0) {
+		/*
+		 * Because we are searching a sorted table, we can now stop
+		 * searching because we have gone past anything that could
+		 * possibly match.
+		 */
+
+		break;
+	    }
+	}
+	if (fullName == NULL) {
+	    /*
+	     * The subcommand is not a prefix of anything, so bail out!
+	     */
+
+	    goto unknownOrAmbiguousSubcommand;
+	}
+	hPtr = Tcl_FindHashEntry(&ensemblePtr->subcommandTable, fullName);
+	if (hPtr == NULL) {
+	    Tcl_Panic("full name %s not found in supposedly synchronized hash",
+		    fullName);
+	}
+	prefixObj = Tcl_GetHashValue(hPtr);
+
+	/*
+	 * Cache for later in the subcommand object.
+	 */
+
+	MakeCachedEnsembleCommand(objv[1], ensemblePtr, fullName, prefixObj);
+    }
+
+    Tcl_IncrRefCount(prefixObj);
+  runResultingSubcommand:
+
+    /*
+     * Do the real work of execution of the subcommand by building an array of
+     * objects (note that this is potentially not the same length as the
+     * number of arguments to this ensemble command), populating it and then
+     * feeding it back through the main command-lookup engine. In theory, we
+     * could look up the command in the namespace ourselves, as we already
+     * have the namespace in which it is guaranteed to exist, but we don't do
+     * that (the cacheing of the command object used should help with that.)
+     */
+
+    {
+	Interp *iPtr = (Interp *) interp;
+	int isRootEnsemble;
+	Tcl_Obj *copyObj;
+
+	/*
+	 * Get the prefix that we're rewriting to. To do this we need to
+	 * ensure that the internal representation of the list does not change
+	 * so that we can safely keep the internal representations of the
+	 * elements in the list.
+	 */
+
+	copyObj = TclListObjCopy(NULL, prefixObj);
+	TclListObjGetElements(NULL, copyObj, &prefixObjc, &prefixObjv);
+
+	/*
+	 * Record what arguments the script sent in so that things like
+	 * Tcl_WrongNumArgs can give the correct error message.
+	 */
+
+	isRootEnsemble = (iPtr->ensembleRewrite.sourceObjs == NULL);
+	if (isRootEnsemble) {
+	    iPtr->ensembleRewrite.sourceObjs = objv;
+	    iPtr->ensembleRewrite.numRemovedObjs = 2;
+	    iPtr->ensembleRewrite.numInsertedObjs = prefixObjc;
+	} else {
+	    int ni = iPtr->ensembleRewrite.numInsertedObjs;
+
+	    if (ni < 2) {
+		iPtr->ensembleRewrite.numRemovedObjs += 2 - ni;
+		iPtr->ensembleRewrite.numInsertedObjs += prefixObjc-1;
+	    } else {
+		iPtr->ensembleRewrite.numInsertedObjs += prefixObjc-2;
+	    }
+	}
+
+	/*
+	 * Allocate a workspace and build the list of arguments to pass to the
+	 * target command in it.
+	 */
+
+	tempObjv = (Tcl_Obj **) TclStackAlloc(interp,
+		(int) sizeof(Tcl_Obj *) * (objc - 2 + prefixObjc));
+	memcpy(tempObjv, prefixObjv, sizeof(Tcl_Obj *) * prefixObjc);
+	memcpy(tempObjv+prefixObjc, objv+2, sizeof(Tcl_Obj *) * (objc-2));
+
+	/*
+	 * Hand off to the target command.
+	 */
+
+	result = Tcl_EvalObjv(interp, objc-2+prefixObjc, tempObjv,
+		TCL_EVAL_INVOKE);
+
+	/*
+	 * Clean up.
+	 */
+
+	TclStackFree(interp, tempObjv);
+	Tcl_DecrRefCount(copyObj);
+	if (isRootEnsemble) {
+	    iPtr->ensembleRewrite.sourceObjs = NULL;
+	    iPtr->ensembleRewrite.numRemovedObjs = 0;
+	    iPtr->ensembleRewrite.numInsertedObjs = 0;
+	}
+    }
+    Tcl_DecrRefCount(prefixObj);
+    return result;
+
+  unknownOrAmbiguousSubcommand:
+    /*
+     * Have not been able to match the subcommand asked for with a real
+     * subcommand that we export. See whether a handler has been registered
+     * for dealing with this situation. Will only call (at most) once for any
+     * particular ensemble invocation.
+     */
+
+    if (ensemblePtr->unknownHandler != NULL && reparseCount++ < 1) {
+	int paramc, i;
+	Tcl_Obj **paramv, *unknownCmd, *ensObj;
+
+	unknownCmd = Tcl_DuplicateObj(ensemblePtr->unknownHandler);
+	TclNewObj(ensObj);
+	Tcl_GetCommandFullName(interp, ensemblePtr->token, ensObj);
+	Tcl_ListObjAppendElement(NULL, unknownCmd, ensObj);
+	for (i=1 ; i<objc ; i++) {
+	    Tcl_ListObjAppendElement(NULL, unknownCmd, objv[i]);
+	}
+	TclListObjGetElements(NULL, unknownCmd, &paramc, &paramv);
+	Tcl_Preserve(ensemblePtr);
+	Tcl_IncrRefCount(unknownCmd);
+	result = Tcl_EvalObjv(interp, paramc, paramv, 0);
+	if (result == TCL_OK) {
+	    prefixObj = Tcl_GetObjResult(interp);
+	    Tcl_IncrRefCount(prefixObj);
+	    Tcl_DecrRefCount(unknownCmd);
+	    Tcl_Release(ensemblePtr);
+	    Tcl_ResetResult(interp);
+	    if (ensemblePtr->flags & ENS_DEAD) {
+		Tcl_DecrRefCount(prefixObj);
+		Tcl_SetResult(interp,
+			"unknown subcommand handler deleted its ensemble",
+			TCL_STATIC);
+		return TCL_ERROR;
+	    }
+
+	    /*
+	     * Namespace is still there. Check if the result is a valid list.
+	     * If it is, and it is non-empty, that list is what we are using
+	     * as our replacement.
+	     */
+
+	    if (TclListObjLength(interp, prefixObj, &prefixObjc) != TCL_OK) {
+		Tcl_DecrRefCount(prefixObj);
+		Tcl_AddErrorInfo(interp, "\n    while parsing result of "
+			"ensemble unknown subcommand handler");
+		return TCL_ERROR;
+	    }
+	    if (prefixObjc > 0) {
+		goto runResultingSubcommand;
+	    }
+
+	    /*
+	     * Namespace alive & empty result => reparse.
+	     */
+
+	    Tcl_DecrRefCount(prefixObj);
+	    goto restartEnsembleParse;
+	}
+	if (!Tcl_InterpDeleted(interp)) {
+	    if (result != TCL_ERROR) {
+		char buf[TCL_INTEGER_SPACE];
+
+		Tcl_ResetResult(interp);
+		Tcl_SetResult(interp,
+			"unknown subcommand handler returned bad code: ",
+			TCL_STATIC);
+		switch (result) {
+		case TCL_RETURN:
+		    Tcl_AppendResult(interp, "return", NULL);
+		    break;
+		case TCL_BREAK:
+		    Tcl_AppendResult(interp, "break", NULL);
+		    break;
+		case TCL_CONTINUE:
+		    Tcl_AppendResult(interp, "continue", NULL);
+		    break;
+		default:
+		    sprintf(buf, "%d", result);
+		    Tcl_AppendResult(interp, buf, NULL);
+		}
+		Tcl_AddErrorInfo(interp, "\n    result of "
+			"ensemble unknown subcommand handler: ");
+		Tcl_AddErrorInfo(interp, TclGetString(unknownCmd));
+	    } else {
+		Tcl_AddErrorInfo(interp,
+			"\n    (ensemble unknown subcommand handler)");
+	    }
+	}
+	Tcl_DecrRefCount(unknownCmd);
+	Tcl_Release(ensemblePtr);
+	return TCL_ERROR;
+    }
+
+    /*
+     * We cannot determine what subcommand to hand off to, so generate a
+     * (standard) failure message. Note the one odd case compared with
+     * standard ensemble-like command, which is where a namespace has no
+     * exported commands at all...
+     */
+
+    Tcl_ResetResult(interp);
+    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ENSEMBLE",
+	    TclGetString(objv[1]), NULL);
+    if (ensemblePtr->subcommandTable.numEntries == 0) {
+	Tcl_AppendResult(interp, "unknown subcommand \"",TclGetString(objv[1]),
+		"\": namespace ", ensemblePtr->nsPtr->fullName,
+		" does not export any commands", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "SUBCOMMAND",
+		TclGetString(objv[1]), NULL);
+	return TCL_ERROR;
+    }
+    Tcl_AppendResult(interp, "unknown ",
+	    (ensemblePtr->flags & TCL_ENSEMBLE_PREFIX ? "or ambiguous " : ""),
+	    "subcommand \"", TclGetString(objv[1]), "\": must be ", NULL);
+    if (ensemblePtr->subcommandTable.numEntries == 1) {
+	Tcl_AppendResult(interp, ensemblePtr->subcommandArrayPtr[0], NULL);
+    } else {
+	int i;
+
+	for (i=0 ; i<ensemblePtr->subcommandTable.numEntries-1 ; i++) {
+	    Tcl_AppendResult(interp,
+		    ensemblePtr->subcommandArrayPtr[i], ", ", NULL);
+	}
+	Tcl_AppendResult(interp, "or ",
+		ensemblePtr->subcommandArrayPtr[i], NULL);
+    }
+    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "SUBCOMMAND",
+	    TclGetString(objv[1]), NULL);
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MakeCachedEnsembleCommand --
+ *
+ *	Cache what we've computed so far; it's not nice to repeatedly copy
+ *	strings about. Note that to do this, we start by deleting any old
+ *	representation that there was (though if it was an out of date
+ *	ensemble rep, we can skip some of the deallocation process.)
+ *
+ * Results:
+ *	None
  *
  * Side effects:
- *	The object's string is set to a copy of the fully qualified
- *	namespace name.
+ *	Alters the internal representation of the first object parameter.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfNsName(objPtr)
-    register Tcl_Obj *objPtr; /* nsName object with string rep to update. */
+MakeCachedEnsembleCommand(
+    Tcl_Obj *objPtr,
+    EnsembleConfig *ensemblePtr,
+    const char *subcommandName,
+    Tcl_Obj *prefixObjPtr)
 {
-    ResolvedNsName *resNamePtr =
-        (ResolvedNsName *) objPtr->internalRep.otherValuePtr;
-    register Namespace *nsPtr;
-    char *name = "";
+    register EnsembleCmdRep *ensembleCmd;
     int length;
 
-    if ((resNamePtr != NULL)
-	    && (resNamePtr->nsId == resNamePtr->nsPtr->nsId)) {
-        nsPtr = resNamePtr->nsPtr;
-        if (nsPtr->flags & NS_DEAD) {
-            nsPtr = NULL;
-        }
-        if (nsPtr != NULL) {
-            name = nsPtr->fullName;
-        }
+    if (objPtr->typePtr == &tclEnsembleCmdType) {
+	ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1;
+	Tcl_DecrRefCount(ensembleCmd->realPrefixObj);
+	ensembleCmd->nsPtr->refCount--;
+	if ((ensembleCmd->nsPtr->refCount == 0)
+		&& (ensembleCmd->nsPtr->flags & NS_DEAD)) {
+	    NamespaceFree(ensembleCmd->nsPtr);
+	}
+	ckfree(ensembleCmd->fullSubcmdName);
+    } else {
+	/*
+	 * Kill the old internal rep, and replace it with a brand new one of
+	 * our own.
+	 */
+
+	TclFreeIntRep(objPtr);
+	ensembleCmd = (EnsembleCmdRep *) ckalloc(sizeof(EnsembleCmdRep));
+	objPtr->internalRep.twoPtrValue.ptr1 = ensembleCmd;
+	objPtr->typePtr = &tclEnsembleCmdType;
+    }
+
+    /*
+     * Populate the internal rep.
+     */
+
+    ensembleCmd->nsPtr = ensemblePtr->nsPtr;
+    ensembleCmd->epoch = ensemblePtr->epoch;
+    ensembleCmd->token = ensemblePtr->token;
+    ensemblePtr->nsPtr->refCount++;
+    ensembleCmd->realPrefixObj = prefixObjPtr;
+    length = strlen(subcommandName)+1;
+    ensembleCmd->fullSubcmdName = ckalloc((unsigned) length);
+    memcpy(ensembleCmd->fullSubcmdName, subcommandName, (unsigned) length);
+    Tcl_IncrRefCount(ensembleCmd->realPrefixObj);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DeleteEnsembleConfig --
+ *
+ *	Destroys the data structure used to represent an ensemble. This is
+ *	called when the ensemble's command is deleted (which happens
+ *	automatically if the ensemble's namespace is deleted.) Maintainers
+ *	should note that ensembles should be deleted by deleting their
+ *	commands.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Memory is (eventually) deallocated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DeleteEnsembleConfig(
+    ClientData clientData)
+{
+    EnsembleConfig *ensemblePtr = clientData;
+    Namespace *nsPtr = ensemblePtr->nsPtr;
+    Tcl_HashSearch search;
+    Tcl_HashEntry *hEnt;
+
+    /*
+     * Unlink from the ensemble chain if it has not been marked as having been
+     * done already.
+     */
+
+    if (ensemblePtr->next != ensemblePtr) {
+	EnsembleConfig *ensPtr = (EnsembleConfig *) nsPtr->ensembles;
+	if (ensPtr == ensemblePtr) {
+	    nsPtr->ensembles = (Tcl_Ensemble *) ensemblePtr->next;
+	} else {
+	    while (ensPtr != NULL) {
+		if (ensPtr->next == ensemblePtr) {
+		    ensPtr->next = ensemblePtr->next;
+		    break;
+		}
+		ensPtr = ensPtr->next;
+	    }
+	}
     }
 
     /*
-     * The following sets the string rep to an empty string on the heap
-     * if the internal rep is NULL.
+     * Mark the namespace as dead so code that uses Tcl_Preserve() can tell
+     * whether disaster happened anyway.
      */
 
-    length = strlen(name);
-    if (length == 0) {
-	objPtr->bytes = tclEmptyStringRep;
+    ensemblePtr->flags |= ENS_DEAD;
+
+    /*
+     * Kill the pointer-containing fields.
+     */
+
+    if (ensemblePtr->subcommandTable.numEntries != 0) {
+	ckfree((char *) ensemblePtr->subcommandArrayPtr);
+    }
+    hEnt = Tcl_FirstHashEntry(&ensemblePtr->subcommandTable, &search);
+    while (hEnt != NULL) {
+	Tcl_Obj *prefixObj = Tcl_GetHashValue(hEnt);
+
+	Tcl_DecrRefCount(prefixObj);
+	hEnt = Tcl_NextHashEntry(&search);
+    }
+    Tcl_DeleteHashTable(&ensemblePtr->subcommandTable);
+    if (ensemblePtr->subcmdList != NULL) {
+	Tcl_DecrRefCount(ensemblePtr->subcmdList);
+    }
+    if (ensemblePtr->subcommandDict != NULL) {
+	Tcl_DecrRefCount(ensemblePtr->subcommandDict);
+    }
+    if (ensemblePtr->unknownHandler != NULL) {
+	Tcl_DecrRefCount(ensemblePtr->unknownHandler);
+    }
+
+    /*
+     * Arrange for the structure to be reclaimed. Note that this is complex
+     * because we have to make sure that we can react sensibly when an
+     * ensemble is deleted during the process of initialising the ensemble
+     * (especially the unknown callback.)
+     */
+
+    Tcl_EventuallyFree(ensemblePtr, TCL_DYNAMIC);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * BuildEnsembleConfig --
+ *
+ *	Create the internal data structures that describe how an ensemble
+ *	looks, being a hash mapping from the full command name to the Tcl list
+ *	that describes the implementation prefix words, and a sorted array of
+ *	all the full command names to allow for reasonably efficient
+ *	unambiguous prefix handling.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Reallocates and rebuilds the hash table and array stored at the
+ *	ensemblePtr argument. For large ensembles or large namespaces, this is
+ *	a potentially expensive operation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+BuildEnsembleConfig(
+    EnsembleConfig *ensemblePtr)
+{
+    Tcl_HashSearch search;	/* Used for scanning the set of commands in
+				 * the namespace that backs up this
+				 * ensemble. */
+    int i, j, isNew;
+    Tcl_HashTable *hash = &ensemblePtr->subcommandTable;
+    Tcl_HashEntry *hPtr;
+
+    if (hash->numEntries != 0) {
+	/*
+	 * Remove pre-existing table.
+	 */
+
+	Tcl_HashSearch search;
+
+	ckfree((char *) ensemblePtr->subcommandArrayPtr);
+	hPtr = Tcl_FirstHashEntry(hash, &search);
+	while (hPtr != NULL) {
+	    Tcl_Obj *prefixObj = Tcl_GetHashValue(hPtr);
+	    Tcl_DecrRefCount(prefixObj);
+	    hPtr = Tcl_NextHashEntry(&search);
+	}
+	Tcl_DeleteHashTable(hash);
+	Tcl_InitHashTable(hash, TCL_STRING_KEYS);
+    }
+
+    /*
+     * See if we've got an export list. If so, we will only export exactly
+     * those commands, which may be either implemented by the prefix in the
+     * subcommandDict or mapped directly onto the namespace's commands.
+     */
+
+    if (ensemblePtr->subcmdList != NULL) {
+	Tcl_Obj **subcmdv, *target, *cmdObj, *cmdPrefixObj;
+	int subcmdc;
+
+	TclListObjGetElements(NULL, ensemblePtr->subcmdList, &subcmdc,
+		&subcmdv);
+	for (i=0 ; i<subcmdc ; i++) {
+	    char *name = TclGetString(subcmdv[i]);
+
+	    hPtr = Tcl_CreateHashEntry(hash, name, &isNew);
+
+	    /*
+	     * Skip non-unique cases.
+	     */
+
+	    if (!isNew) {
+		continue;
+	    }
+
+	    /*
+	     * Look in our dictionary (if present) for the command.
+	     */
+
+	    if (ensemblePtr->subcommandDict != NULL) {
+		Tcl_DictObjGet(NULL, ensemblePtr->subcommandDict, subcmdv[i],
+			&target);
+		if (target != NULL) {
+		    Tcl_SetHashValue(hPtr, target);
+		    Tcl_IncrRefCount(target);
+		    continue;
+		}
+	    }
+
+	    /*
+	     * Not there, so map onto the namespace. Note in this case that we
+	     * do not guarantee that the command is actually there; that is
+	     * the programmer's responsibility (or [::unknown] of course).
+	     */
+
+	    cmdObj = Tcl_NewStringObj(ensemblePtr->nsPtr->fullName, -1);
+	    if (ensemblePtr->nsPtr->parentPtr != NULL) {
+		Tcl_AppendStringsToObj(cmdObj, "::", name, NULL);
+	    } else {
+		Tcl_AppendStringsToObj(cmdObj, name, NULL);
+	    }
+	    cmdPrefixObj = Tcl_NewListObj(1, &cmdObj);
+	    Tcl_SetHashValue(hPtr, cmdPrefixObj);
+	    Tcl_IncrRefCount(cmdPrefixObj);
+	}
+    } else if (ensemblePtr->subcommandDict != NULL) {
+	/*
+	 * No subcmd list, but we do have a mapping dictionary so we should
+	 * use the keys of that. Convert the dictionary's contents into the
+	 * form required for the ensemble's internal hashtable.
+	 */
+
+	Tcl_DictSearch dictSearch;
+	Tcl_Obj *keyObj, *valueObj;
+	int done;
+
+	Tcl_DictObjFirst(NULL, ensemblePtr->subcommandDict, &dictSearch,
+		&keyObj, &valueObj, &done);
+	while (!done) {
+	    char *name = TclGetString(keyObj);
+
+	    hPtr = Tcl_CreateHashEntry(hash, name, &isNew);
+	    Tcl_SetHashValue(hPtr, valueObj);
+	    Tcl_IncrRefCount(valueObj);
+	    Tcl_DictObjNext(&dictSearch, &keyObj, &valueObj, &done);
+	}
     } else {
-	objPtr->bytes = (char *) ckalloc((unsigned) (length + 1));
-	memcpy((VOID *) objPtr->bytes, (VOID *) name, (unsigned) length);
-	objPtr->bytes[length] = '\0';
+	/*
+	 * Discover what commands are actually exported by the namespace.
+	 * What we have is an array of patterns and a hash table whose keys
+	 * are the command names exported by the namespace (the contents do
+	 * not matter here.) We must find out what commands are actually
+	 * exported by filtering each command in the namespace against each of
+	 * the patterns in the export list. Note that we use an intermediate
+	 * hash table to make memory management easier, and because that makes
+	 * exact matching far easier too.
+	 *
+	 * Suggestion for future enhancement: compute the unique prefixes and
+	 * place them in the hash too, which should make for even faster
+	 * matching.
+	 */
+
+	hPtr = Tcl_FirstHashEntry(&ensemblePtr->nsPtr->cmdTable, &search);
+	for (; hPtr!= NULL ; hPtr=Tcl_NextHashEntry(&search)) {
+	    char *nsCmdName =		/* Name of command in namespace. */
+		    Tcl_GetHashKey(&ensemblePtr->nsPtr->cmdTable, hPtr);
+
+	    for (i=0 ; i<ensemblePtr->nsPtr->numExportPatterns ; i++) {
+		if (Tcl_StringMatch(nsCmdName,
+			ensemblePtr->nsPtr->exportArrayPtr[i])) {
+		    hPtr = Tcl_CreateHashEntry(hash, nsCmdName, &isNew);
+
+		    /*
+		     * Remember, hash entries have a full reference to the
+		     * substituted part of the command (as a list) as their
+		     * content!
+		     */
+
+		    if (isNew) {
+			Tcl_Obj *cmdObj, *cmdPrefixObj;
+
+			TclNewObj(cmdObj);
+			Tcl_AppendStringsToObj(cmdObj,
+				ensemblePtr->nsPtr->fullName,
+				(ensemblePtr->nsPtr->parentPtr ? "::" : ""),
+				nsCmdName, NULL);
+			cmdPrefixObj = Tcl_NewListObj(1, &cmdObj);
+			Tcl_SetHashValue(hPtr, cmdPrefixObj);
+			Tcl_IncrRefCount(cmdPrefixObj);
+		    }
+		    break;
+		}
+	    }
+	}
+    }
+
+    if (hash->numEntries == 0) {
+	ensemblePtr->subcommandArrayPtr = NULL;
+	return;
+    }
+
+    /*
+     * Create a sorted array of all subcommands in the ensemble; hash tables
+     * are all very well for a quick look for an exact match, but they can't
+     * determine things like whether a string is a prefix of another (not
+     * without lots of preparation anyway) and they're no good for when we're
+     * generating the error message either.
+     *
+     * We do this by filling an array with the names (we use the hash keys
+     * directly to save a copy, since any time we change the array we change
+     * the hash too, and vice versa) and running quicksort over the array.
+     */
+
+    ensemblePtr->subcommandArrayPtr = (char **)
+	    ckalloc(sizeof(char *) * hash->numEntries);
+
+    /*
+     * Fill array from both ends as this makes us less likely to end up with
+     * performance problems in qsort(), which is good. Note that doing this
+     * makes this code much more opaque, but the naive alternatve:
+     *
+     * for (hPtr=Tcl_FirstHashEntry(hash,&search),i=0 ;
+     *	       hPtr!=NULL ; hPtr=Tcl_NextHashEntry(&search),i++) {
+     *     ensemblePtr->subcommandArrayPtr[i] = Tcl_GetHashKey(hash, &hPtr);
+     * }
+     *
+     * can produce long runs of precisely ordered table entries when the
+     * commands in the namespace are declared in a sorted fashion (an ordering
+     * some people like) and the hashing functions (or the command names
+     * themselves) are fairly unfortunate. By filling from both ends, it
+     * requires active malice (and probably a debugger) to get qsort() to have
+     * awful runtime behaviour.
+     */
+
+    i = 0;
+    j = hash->numEntries;
+    hPtr = Tcl_FirstHashEntry(hash, &search);
+    while (hPtr != NULL) {
+	ensemblePtr->subcommandArrayPtr[i++] = Tcl_GetHashKey(hash, hPtr);
+	hPtr = Tcl_NextHashEntry(&search);
+	if (hPtr == NULL) {
+	    break;
+	}
+	ensemblePtr->subcommandArrayPtr[--j] = Tcl_GetHashKey(hash, hPtr);
+	hPtr = Tcl_NextHashEntry(&search);
+    }
+    if (hash->numEntries > 1) {
+	qsort(ensemblePtr->subcommandArrayPtr, (unsigned)hash->numEntries,
+		sizeof(char *), NsEnsembleStringOrder);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NsEnsembleStringOrder --
+ *
+ *	Helper function to compare two pointers to two strings for use with
+ *	qsort().
+ *
+ * Results:
+ *	-1 if the first string is smaller, 1 if the second string is smaller,
+ *	and 0 if they are equal.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+NsEnsembleStringOrder(
+    const void *strPtr1,
+    const void *strPtr2)
+{
+    return strcmp(*(const char **)strPtr1, *(const char **)strPtr2);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeEnsembleCmdRep --
+ *
+ *	Destroys the internal representation of a Tcl_Obj that has been
+ *	holding information about a command in an ensemble.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Memory is deallocated. If this held the last reference to a
+ *	namespace's main structure, that main structure will also be
+ *	destroyed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeEnsembleCmdRep(
+    Tcl_Obj *objPtr)
+{
+    EnsembleCmdRep *ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1;
+
+    Tcl_DecrRefCount(ensembleCmd->realPrefixObj);
+    ckfree(ensembleCmd->fullSubcmdName);
+    ensembleCmd->nsPtr->refCount--;
+    if ((ensembleCmd->nsPtr->refCount == 0)
+	    && (ensembleCmd->nsPtr->flags & NS_DEAD)) {
+	NamespaceFree(ensembleCmd->nsPtr);
     }
+    ckfree((char *) ensembleCmd);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DupEnsembleCmdRep --
+ *
+ *	Makes one Tcl_Obj into a copy of another that is a subcommand of an
+ *	ensemble.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Memory is allocated, and the namespace that the ensemble is built on
+ *	top of gains another reference.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DupEnsembleCmdRep(
+    Tcl_Obj *objPtr,
+    Tcl_Obj *copyPtr)
+{
+    EnsembleCmdRep *ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1;
+    EnsembleCmdRep *ensembleCopy = (EnsembleCmdRep *)
+	    ckalloc(sizeof(EnsembleCmdRep));
+    int length = strlen(ensembleCmd->fullSubcmdName);
+
+    copyPtr->typePtr = &tclEnsembleCmdType;
+    copyPtr->internalRep.twoPtrValue.ptr1 = ensembleCopy;
+    ensembleCopy->nsPtr = ensembleCmd->nsPtr;
+    ensembleCopy->epoch = ensembleCmd->epoch;
+    ensembleCopy->token = ensembleCmd->token;
+    ensembleCopy->nsPtr->refCount++;
+    ensembleCopy->realPrefixObj = ensembleCmd->realPrefixObj;
+    Tcl_IncrRefCount(ensembleCopy->realPrefixObj);
+    ensembleCopy->fullSubcmdName = ckalloc((unsigned) length+1);
+    memcpy(ensembleCopy->fullSubcmdName, ensembleCmd->fullSubcmdName,
+	    (unsigned) length+1);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringOfEnsembleCmdRep --
+ *
+ *	Creates a string representation of a Tcl_Obj that holds a subcommand
+ *	of an ensemble.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The object gains a string (UTF-8) representation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+StringOfEnsembleCmdRep(
+    Tcl_Obj *objPtr)
+{
+    EnsembleCmdRep *ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1;
+    int length = strlen(ensembleCmd->fullSubcmdName);
+
     objPtr->length = length;
+    objPtr->bytes = ckalloc((unsigned) length+1);
+    memcpy(objPtr->bytes, ensembleCmd->fullSubcmdName, (unsigned) length+1);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_LogCommandInfo --
+ *
+ *	This function is invoked after an error occurs in an interpreter. It
+ *	adds information to iPtr->errorInfo field to describe the command that
+ *	was being executed when the error occurred.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Information about the command is added to errorInfo and the line
+ *	number stored internally in the interpreter is set.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_LogCommandInfo(
+    Tcl_Interp *interp,		/* Interpreter in which to log information. */
+    const char *script,		/* First character in script containing
+				 * command (must be <= command). */
+    const char *command,	/* First character in command that generated
+				 * the error. */
+    int length)			/* Number of bytes in command (-1 means use
+				 * all bytes up to first null byte). */
+{
+    register const char *p;
+    Interp *iPtr = (Interp *) interp;
+    int overflow, limit = 150;
+    Var *varPtr, *arrayPtr;
+
+    if (iPtr->flags & ERR_ALREADY_LOGGED) {
+	/*
+	 * Someone else has already logged error information for this command;
+	 * we shouldn't add anything more.
+	 */
+
+	return;
+    }
+
+    /*
+     * Compute the line number where the error occurred.
+     */
+
+    iPtr->errorLine = 1;
+    for (p = script; p != command; p++) {
+	if (*p == '\n') {
+	    iPtr->errorLine++;
+	}
+    }
+
+    if (length < 0) {
+	length = strlen(command);
+    }
+    overflow = (length > limit);
+    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+	    "\n    %s\n\"%.*s%s\"", ((iPtr->errorInfo == NULL)
+	    ? "while executing" : "invoked from within"),
+	    (overflow ? limit : length), command, (overflow ? "..." : "")));
+
+    varPtr = TclObjLookupVarEx(interp, iPtr->eiVar, NULL, TCL_GLOBAL_ONLY,
+	    NULL, 0, 0, &arrayPtr);
+    if ((varPtr == NULL) || !TclIsVarTraced(varPtr)) {
+	/*
+	 * Should not happen.
+	 */
+
+	return;
+    } else {
+	Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&iPtr->varTraces,
+		(char *) varPtr);
+	VarTrace *tracePtr = Tcl_GetHashValue(hPtr);
+
+	if (tracePtr->traceProc != EstablishErrorInfoTraces) {
+	    /*
+	     * The most recent trace set on ::errorInfo is not the one the
+	     * core itself puts on last. This means some other code is tracing
+	     * the variable, and the additional trace(s) might be write traces
+	     * that expect the timing of writes to ::errorInfo that existed
+	     * Tcl releases before 8.5. To satisfy that compatibility need, we
+	     * write the current -errorinfo value to the ::errorInfo variable.
+	     */
+
+	    Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL, iPtr->errorInfo,
+		    TCL_GLOBAL_ONLY);
+	}
+    }
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclNotify.c b/generic/tclNotify.c
index 1f5a607..f85fb7a 100644
--- a/generic/tclNotify.c
+++ b/generic/tclNotify.c
@@ -1,28 +1,27 @@
-/* 
+/*
  * tclNotify.c --
  *
- *	This file implements the generic portion of the Tcl notifier.
- *	The notifier is lowest-level part of the event system.  It
- *	manages an event queue that holds Tcl_Event structures.  The
- *	platform specific portion of the notifier is defined in the
- *	tcl*Notify.c files in each platform directory.
+ *	This file implements the generic portion of the Tcl notifier. The
+ *	notifier is lowest-level part of the event system. It manages an event
+ *	queue that holds Tcl_Event structures. The platform specific portion
+ *	of the notifier is defined in the tcl*Notify.c files in each platform
+ *	directory.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998 by Scriptics Corporation.
  * Copyright (c) 2003 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 extern TclStubs tclStubs;
 
 /*
- * For each event source (created with Tcl_CreateEventSource) there
- * is a structure of the following type:
+ * For each event source (created with Tcl_CreateEventSource) there is a
+ * structure of the following type:
  */
 
 typedef struct EventSource {
@@ -35,34 +34,34 @@ typedef struct EventSource {
 /*
  * The following structure keeps track of the state of the notifier on a
  * per-thread basis. The first three elements keep track of the event queue.
- * In addition to the first (next to be serviced) and last events in the queue,
- * we keep track of a "marker" event.  This provides a simple priority
+ * In addition to the first (next to be serviced) and last events in the
+ * queue, we keep track of a "marker" event. This provides a simple priority
  * mechanism whereby events can be inserted at the front of the queue but
- * behind all other high-priority events already in the queue (this is used for
- * things like a sequence of Enter and Leave events generated during a grab in
- * Tk).  These elements are protected by the queueMutex so that any thread
- * can queue an event on any notifier.  Note that all of the values in this
- * structure will be initialized to 0.
+ * behind all other high-priority events already in the queue (this is used
+ * for things like a sequence of Enter and Leave events generated during a
+ * grab in Tk). These elements are protected by the queueMutex so that any
+ * thread can queue an event on any notifier. Note that all of the values in
+ * this structure will be initialized to 0.
  */
 
 typedef struct ThreadSpecificData {
     Tcl_Event *firstEventPtr;	/* First pending event, or NULL if none. */
     Tcl_Event *lastEventPtr;	/* Last pending event, or NULL if none. */
-    Tcl_Event *markerEventPtr;	/* Last high-priority event in queue, or
-				 * NULL if none. */
+    Tcl_Event *markerEventPtr;	/* Last high-priority event in queue, or NULL
+				 * if none. */
     Tcl_Mutex queueMutex;	/* Mutex to protect access to the previous
 				 * three fields. */
     int serviceMode;		/* One of TCL_SERVICE_NONE or
 				 * TCL_SERVICE_ALL. */
-    int blockTimeSet;		/* 0 means there is no maximum block
-				 * time:  block forever. */
-    Tcl_Time blockTime;		/* If blockTimeSet is 1, gives the
-				 * maximum elapsed time for the next block. */
-    int inTraversal;		/* 1 if Tcl_SetMaxBlockTime is being
-				 * called during an event source traversal. */
+    int blockTimeSet;		/* 0 means there is no maximum block time:
+				 * block forever. */
+    Tcl_Time blockTime;		/* If blockTimeSet is 1, gives the maximum
+				 * elapsed time for the next block. */
+    int inTraversal;		/* 1 if Tcl_SetMaxBlockTime is being called
+				 * during an event source traversal. */
     EventSource *firstEventSourcePtr;
-				/* Pointer to first event source in
-				 * list of event sources for this thread. */
+				/* Pointer to first event source in list of
+				 * event sources for this thread. */
     Tcl_ThreadId threadId;	/* Thread that owns this notifier instance. */
     ClientData clientData;	/* Opaque handle for platform specific
 				 * notifier. */
@@ -76,20 +75,20 @@ typedef struct ThreadSpecificData {
 static Tcl_ThreadDataKey dataKey;
 
 /*
- * Global list of notifiers.  Access to this list is controlled by the
- * listLock mutex.  If this becomes a performance bottleneck, this could
- * be replaced with a hashtable.
+ * Global list of notifiers. Access to this list is controlled by the listLock
+ * mutex. If this becomes a performance bottleneck, this could be replaced
+ * with a hashtable.
  */
 
-static ThreadSpecificData *firstNotifierPtr;
+static ThreadSpecificData *firstNotifierPtr = NULL;
 TCL_DECLARE_MUTEX(listLock)
 
 /*
  * Declarations for routines used only in this file.
  */
 
-static void		QueueEvent _ANSI_ARGS_((ThreadSpecificData *tsdPtr,
-			    Tcl_Event* evPtr, Tcl_QueuePosition position));
+static void		QueueEvent(ThreadSpecificData *tsdPtr,
+			    Tcl_Event* evPtr, Tcl_QueuePosition position);
 
 /*
  *----------------------------------------------------------------------
@@ -109,18 +108,29 @@ static void		QueueEvent _ANSI_ARGS_((ThreadSpecificData *tsdPtr,
  */
 
 void
-TclInitNotifier()
+TclInitNotifier(void)
 {
-    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    ThreadSpecificData *tsdPtr;
+    Tcl_ThreadId threadId = Tcl_GetCurrentThread();
 
     Tcl_MutexLock(&listLock);
+    for (tsdPtr = firstNotifierPtr; tsdPtr && tsdPtr->threadId != threadId;
+	    tsdPtr = tsdPtr->nextPtr) {
+	/* Empty loop body. */
+    }
 
-    tsdPtr->threadId = Tcl_GetCurrentThread();
-    tsdPtr->clientData = tclStubs.tcl_InitNotifier();
-    tsdPtr->initialized = 1;
-    tsdPtr->nextPtr = firstNotifierPtr;
-    firstNotifierPtr = tsdPtr;
+    if (NULL == tsdPtr) {
+	/*
+	 * Notifier not yet initialized in this thread.
+	 */
 
+	tsdPtr = TCL_TSD_INIT(&dataKey);
+	tsdPtr->threadId = threadId;
+	tsdPtr->clientData = tclStubs.tcl_InitNotifier();
+	tsdPtr->initialized = 1;
+	tsdPtr->nextPtr = firstNotifierPtr;
+	firstNotifierPtr = tsdPtr;
+    }
     Tcl_MutexUnlock(&listLock);
 }
 
@@ -129,40 +139,39 @@ TclInitNotifier()
  *
  * TclFinalizeNotifier --
  *
- *	Finalize the thread local data structures for the notifier
- *	subsystem.
+ *	Finalize the thread local data structures for the notifier subsystem.
  *
  * Results:
- *	None.	
+ *	None.
  *
  * Side effects:
- *	Removes the notifier associated with the current thread from
- *	the global notifier list. This is done only if the notifier
- *	was initialized for this thread by call to TclInitNotifier().
- *	This is always true for threads which have been seeded with
- *	an Tcl interpreter, since the call to Tcl_CreateInterp will,
- *	among other things, call TclInitializeSubsystems() and this
- *	one will, in turn, call the TclInitNotifier() for the thread.
- *	For threads created without the Tcl interpreter, though,
- *	nobody is explicitly nor implicitly calling the TclInitNotifier
- *	hence, TclFinalizeNotifier should not be performed at all.
+ *	Removes the notifier associated with the current thread from the
+ *	global notifier list. This is done only if the notifier was
+ *	initialized for this thread by call to TclInitNotifier(). This is
+ *	always true for threads which have been seeded with an Tcl
+ *	interpreter, since the call to Tcl_CreateInterp will, among other
+ *	things, call TclInitializeSubsystems() and this one will, in turn,
+ *	call the TclInitNotifier() for the thread. For threads created without
+ *	the Tcl interpreter, though, nobody is explicitly nor implicitly
+ *	calling the TclInitNotifier hence, TclFinalizeNotifier should not be
+ *	performed at all.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclFinalizeNotifier()
+TclFinalizeNotifier(void)
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     ThreadSpecificData **prevPtrPtr;
     Tcl_Event *evPtr, *hold;
 
     if (!tsdPtr->initialized) {
-        return; /* Notifier not initialized for the current thread */
+	return;		/* Notifier not initialized for the current thread */
     }
 
     Tcl_MutexLock(&(tsdPtr->queueMutex));
-    for (evPtr = tsdPtr->firstEventPtr; evPtr != (Tcl_Event *) NULL; ) {
+    for (evPtr = tsdPtr->firstEventPtr; evPtr != NULL; ) {
 	hold = evPtr;
 	evPtr = evPtr->nextPtr;
 	ckfree((char *) hold);
@@ -178,7 +187,7 @@ TclFinalizeNotifier()
     }
     Tcl_MutexFinalize(&(tsdPtr->queueMutex));
     for (prevPtrPtr = &firstNotifierPtr; *prevPtrPtr != NULL;
-	 prevPtrPtr = &((*prevPtrPtr)->nextPtr)) {
+	    prevPtrPtr = &((*prevPtrPtr)->nextPtr)) {
 	if (*prevPtrPtr == tsdPtr) {
 	    *prevPtrPtr = tsdPtr->nextPtr;
 	    break;
@@ -194,24 +203,24 @@ TclFinalizeNotifier()
  *
  * Tcl_SetNotifier --
  *
- *	Install a set of alternate functions for use with the notifier.
- #	In particular, this can be used to install the Xt-based
- *	notifier for use with the Browser plugin.
+ *	Install a set of alternate functions for use with the notifier. In
+ *	particular, this can be used to install the Xt-based notifier for use
+ *	with the Browser plugin.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Overstomps part of the stub vector.  This relies on hooks
- *	added to the default procedures in case those are called
- *	directly (i.e., not through the stub table.)
+ *	Overstomps part of the stub vector. This relies on hooks added to the
+ *	default functions in case those are called directly (i.e., not through
+ *	the stub table.)
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetNotifier(notifierProcPtr)
-    Tcl_NotifierProcs *notifierProcPtr;
+Tcl_SetNotifier(
+    Tcl_NotifierProcs *notifierProcPtr)
 {
 #if !defined(__WIN32__) /* UNIX */
     tclStubs.tcl_CreateFileHandler = notifierProcPtr->createFileHandlerProc;
@@ -230,10 +239,9 @@ Tcl_SetNotifier(notifierProcPtr)
  *
  * Tcl_CreateEventSource --
  *
- *	This procedure is invoked to create a new source of events.
- *	The source is identified by a procedure that gets invoked
- *	during Tcl_DoOneEvent to check for events on that source
- *	and queue them.
+ *	This function is invoked to create a new source of events. The source
+ *	is identified by a function that gets invoked during Tcl_DoOneEvent to
+ *	check for events on that source and queue them.
  *
  *
  * Results:
@@ -241,34 +249,36 @@ Tcl_SetNotifier(notifierProcPtr)
  *
  * Side effects:
  *	SetupProc and checkProc will be invoked each time that Tcl_DoOneEvent
- *	runs out of things to do.  SetupProc will be invoked before
- *	Tcl_DoOneEvent calls select or whatever else it uses to wait
- *	for events.  SetupProc typically calls functions like
- *	Tcl_SetMaxBlockTime to indicate what to wait for.
+ *	runs out of things to do. SetupProc will be invoked before
+ *	Tcl_DoOneEvent calls select or whatever else it uses to wait for
+ *	events. SetupProc typically calls functions like Tcl_SetMaxBlockTime
+ *	to indicate what to wait for.
  *
  *	CheckProc is called after select or whatever operation was actually
- *	used to wait.  It figures out whether anything interesting actually
+ *	used to wait. It figures out whether anything interesting actually
  *	happened (e.g. by calling Tcl_AsyncReady), and then calls
  *	Tcl_QueueEvent to queue any events that are ready.
  *
- *	Each of these procedures is passed two arguments, e.g.
+ *	Each of these functions is passed two arguments, e.g.
  *		(*checkProc)(ClientData clientData, int flags));
- *	ClientData is the same as the clientData argument here, and flags
- *	is a combination of things like TCL_FILE_EVENTS that indicates
- *	what events are of interest:  setupProc and checkProc use flags
- *	to figure out whether their events are relevant or not.
+ *	ClientData is the same as the clientData argument here, and flags is a
+ *	combination of things like TCL_FILE_EVENTS that indicates what events
+ *	are of interest: setupProc and checkProc use flags to figure out
+ *	whether their events are relevant or not.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_CreateEventSource(setupProc, checkProc, clientData)
-    Tcl_EventSetupProc *setupProc;	/* Procedure to invoke to figure out
-					 * what to wait for. */
-    Tcl_EventCheckProc *checkProc;	/* Procedure to call after waiting
-					 * to see what happened. */
-    ClientData clientData;		/* One-word argument to pass to
-					 * setupProc and checkProc. */
+Tcl_CreateEventSource(
+    Tcl_EventSetupProc *setupProc,
+				/* Function to invoke to figure out what to
+				 * wait for. */
+    Tcl_EventCheckProc *checkProc,
+				/* Function to call after waiting to see what
+				 * happened. */
+    ClientData clientData)	/* One-word argument to pass to setupProc and
+				 * checkProc. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     EventSource *sourcePtr = (EventSource *) ckalloc(sizeof(EventSource));
@@ -285,28 +295,29 @@ Tcl_CreateEventSource(setupProc, checkProc, clientData)
  *
  * Tcl_DeleteEventSource --
  *
- *	This procedure is invoked to delete the source of events
- *	given by proc and clientData.
+ *	This function is invoked to delete the source of events given by proc
+ *	and clientData.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The given event source is cancelled, so its procedure will
- *	never again be called.  If no such source exists, nothing
- *	happens.
+ *	The given event source is cancelled, so its function will never again
+ *	be called. If no such source exists, nothing happens.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DeleteEventSource(setupProc, checkProc, clientData)
-    Tcl_EventSetupProc *setupProc;	/* Procedure to invoke to figure out
-					 * what to wait for. */
-    Tcl_EventCheckProc *checkProc;	/* Procedure to call after waiting
-					 * to see what happened. */
-    ClientData clientData;		/* One-word argument to pass to
-					 * setupProc and checkProc. */
+Tcl_DeleteEventSource(
+    Tcl_EventSetupProc *setupProc,
+				/* Function to invoke to figure out what to
+				 * wait for. */
+    Tcl_EventCheckProc *checkProc,
+				/* Function to call after waiting to see what
+				 * happened. */
+    ClientData clientData)	/* One-word argument to pass to setupProc and
+				 * checkProc. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     EventSource *sourcePtr, *prevPtr;
@@ -334,8 +345,7 @@ Tcl_DeleteEventSource(setupProc, checkProc, clientData)
  *
  * Tcl_QueueEvent --
  *
- *	Queue an event on the event queue associated with the
- *	current thread.
+ *	Queue an event on the event queue associated with the current thread.
  *
  * Results:
  *	None.
@@ -347,14 +357,13 @@ Tcl_DeleteEventSource(setupProc, checkProc, clientData)
  */
 
 void
-Tcl_QueueEvent(evPtr, position)
-    Tcl_Event* evPtr;		/* Event to add to queue.  The storage
-				 * space must have been allocated the caller
-				 * with malloc (ckalloc), and it becomes
-				 * the property of the event queue.  It
-				 * will be freed after the event has been
-				 * handled. */
-    Tcl_QueuePosition position;	/* One of TCL_QUEUE_TAIL, TCL_QUEUE_HEAD,
+Tcl_QueueEvent(
+    Tcl_Event* evPtr,		/* Event to add to queue. The storage space
+				 * must have been allocated the caller with
+				 * malloc (ckalloc), and it becomes the
+				 * property of the event queue. It will be
+				 * freed after the event has been handled. */
+    Tcl_QueuePosition position)	/* One of TCL_QUEUE_TAIL, TCL_QUEUE_HEAD,
 				 * TCL_QUEUE_MARK. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -378,15 +387,14 @@ Tcl_QueueEvent(evPtr, position)
  */
 
 void
-Tcl_ThreadQueueEvent(threadId, evPtr, position)
-    Tcl_ThreadId threadId;	/* Identifier for thread to use. */
-    Tcl_Event* evPtr;		/* Event to add to queue.  The storage
-				 * space must have been allocated the caller
-				 * with malloc (ckalloc), and it becomes
-				 * the property of the event queue.  It
-				 * will be freed after the event has been
-				 * handled. */
-    Tcl_QueuePosition position;	/* One of TCL_QUEUE_TAIL, TCL_QUEUE_HEAD,
+Tcl_ThreadQueueEvent(
+    Tcl_ThreadId threadId,	/* Identifier for thread to use. */
+    Tcl_Event *evPtr,		/* Event to add to queue. The storage space
+				 * must have been allocated the caller with
+				 * malloc (ckalloc), and it becomes the
+				 * property of the event queue. It will be
+				 * freed after the event has been handled. */
+    Tcl_QueuePosition position)	/* One of TCL_QUEUE_TAIL, TCL_QUEUE_HEAD,
 				 * TCL_QUEUE_MARK. */
 {
     ThreadSpecificData *tsdPtr;
@@ -397,7 +405,7 @@ Tcl_ThreadQueueEvent(threadId, evPtr, position)
 
     Tcl_MutexLock(&listLock);
     for (tsdPtr = firstNotifierPtr; tsdPtr && tsdPtr->threadId != threadId;
-	     tsdPtr = tsdPtr->nextPtr) {
+	    tsdPtr = tsdPtr->nextPtr) {
 	/* Empty loop body. */
     }
 
@@ -418,12 +426,12 @@ Tcl_ThreadQueueEvent(threadId, evPtr, position)
  *
  * QueueEvent --
  *
- *	Insert an event into the specified thread's event queue at one
- *	of three positions: the head, the tail, or before a floating
- *	marker. Events inserted before the marker will be processed in
- *	first-in-first-out order, but before any events inserted at
- *	the tail of the queue.  Events inserted at the head of the
- *	queue will be processed in last-in-first-out order.
+ *	Insert an event into the specified thread's event queue at one of
+ *	three positions: the head, the tail, or before a floating marker.
+ *	Events inserted before the marker will be processed in first-in-
+ *	first-out order, but before any events inserted at the tail of the
+ *	queue. Events inserted at the head of the queue will be processed in
+ *	last-in-first-out order.
  *
  * Results:
  *	None.
@@ -435,16 +443,15 @@ Tcl_ThreadQueueEvent(threadId, evPtr, position)
  */
 
 static void
-QueueEvent(tsdPtr, evPtr, position)
-    ThreadSpecificData *tsdPtr;	/* Handle to thread local data that indicates
+QueueEvent(
+    ThreadSpecificData *tsdPtr,	/* Handle to thread local data that indicates
 				 * which event queue to use. */
-    Tcl_Event* evPtr;		/* Event to add to queue.  The storage
-				 * space must have been allocated the caller
-				 * with malloc (ckalloc), and it becomes
-				 * the property of the event queue.  It
-				 * will be freed after the event has been
-				 * handled. */
-    Tcl_QueuePosition position;	/* One of TCL_QUEUE_TAIL, TCL_QUEUE_HEAD,
+    Tcl_Event *evPtr,		/* Event to add to queue.  The storage space
+				 * must have been allocated the caller with
+				 * malloc (ckalloc), and it becomes the
+				 * property of the event queue. It will be
+				 * freed after the event has been handled. */
+    Tcl_QueuePosition position)	/* One of TCL_QUEUE_TAIL, TCL_QUEUE_HEAD,
 				 * TCL_QUEUE_MARK. */
 {
     Tcl_MutexLock(&(tsdPtr->queueMutex));
@@ -468,12 +475,12 @@ QueueEvent(tsdPtr, evPtr, position)
 	evPtr->nextPtr = tsdPtr->firstEventPtr;
 	if (tsdPtr->firstEventPtr == NULL) {
 	    tsdPtr->lastEventPtr = evPtr;
-	}	    
+	}
 	tsdPtr->firstEventPtr = evPtr;
     } else if (position == TCL_QUEUE_MARK) {
 	/*
-	 * Insert the event after the current marker event and advance
-	 * the marker to the new event.
+	 * Insert the event after the current marker event and advance the
+	 * marker to the new event.
 	 */
 
 	if (tsdPtr->markerEventPtr == NULL) {
@@ -496,10 +503,10 @@ QueueEvent(tsdPtr, evPtr, position)
  *
  * Tcl_DeleteEvents --
  *
- *	Calls a procedure for each event in the queue and deletes those
- *	for which the procedure returns 1. Events for which the
- *	procedure returns 0 are left in the queue.  Operates on the
- *	queue associated with the current thread.
+ *	Calls a function for each event in the queue and deletes those for
+ *	which the function returns 1. Events for which the function returns 0
+ *	are left in the queue. Operates on the queue associated with the
+ *	current thread.
  *
  * Results:
  *	None.
@@ -511,36 +518,65 @@ QueueEvent(tsdPtr, evPtr, position)
  */
 
 void
-Tcl_DeleteEvents(proc, clientData)
-    Tcl_EventDeleteProc *proc;		/* The procedure to call. */
-    ClientData clientData;    		/* type-specific data. */
+Tcl_DeleteEvents(
+    Tcl_EventDeleteProc *proc,	/* The function to call. */
+    ClientData clientData)    	/* The type-specific data. */
 {
-    Tcl_Event *evPtr, *prevPtr, *hold;
+    Tcl_Event *evPtr;		/* Pointer to the event being examined */
+    Tcl_Event *prevPtr;		/* Pointer to evPtr's predecessor, or NULL if
+				 * evPtr designates the first event in the
+				 * queue for the thread. */
+    Tcl_Event* hold;
+
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     Tcl_MutexLock(&(tsdPtr->queueMutex));
-    for (prevPtr = (Tcl_Event *) NULL, evPtr = tsdPtr->firstEventPtr;
-             evPtr != (Tcl_Event *) NULL;
-             ) {
-        if ((*proc) (evPtr, clientData) == 1) {
-            if (tsdPtr->firstEventPtr == evPtr) {
-                tsdPtr->firstEventPtr = evPtr->nextPtr;
-            } else {
-                prevPtr->nextPtr = evPtr->nextPtr;
-            }
-            if (evPtr->nextPtr == (Tcl_Event *) NULL) {
-                tsdPtr->lastEventPtr = prevPtr;
-            }
-            if (tsdPtr->markerEventPtr == evPtr) {
-                tsdPtr->markerEventPtr = prevPtr;
-            }
-            hold = evPtr;
-            evPtr = evPtr->nextPtr;
-            ckfree((char *) hold);
-        } else {
-            prevPtr = evPtr;
-            evPtr = evPtr->nextPtr;
-        }
+
+    /*
+     * Walk the queue of events for the thread, applying 'proc' to each to
+     * decide whether to eliminate the event.
+     */
+
+    prevPtr = NULL;
+    evPtr = tsdPtr->firstEventPtr;
+    while (evPtr != NULL) {
+	if ((*proc)(evPtr, clientData) == 1) {
+	    /*
+	     * This event should be deleted. Unlink it.
+	     */
+
+	    if (prevPtr == NULL) {
+		tsdPtr->firstEventPtr = evPtr->nextPtr;
+	    } else {
+		prevPtr->nextPtr = evPtr->nextPtr;
+	    }
+
+	    /*
+	     * Update 'last' and 'marker' events if either has been deleted.
+	     */
+
+	    if (evPtr->nextPtr == NULL) {
+		tsdPtr->lastEventPtr = prevPtr;
+	    }
+	    if (tsdPtr->markerEventPtr == evPtr) {
+		tsdPtr->markerEventPtr = prevPtr;
+	    }
+
+	    /*
+	     * Delete the event data structure.
+	     */
+
+	    hold = evPtr;
+	    evPtr = evPtr->nextPtr;
+	    ckfree((char *) hold);
+	} else {
+	    /*
+	     * Event is to be retained.
+	     */
+
+	    prevPtr = evPtr;
+	    evPtr = evPtr->nextPtr;
+	}
     }
     Tcl_MutexUnlock(&(tsdPtr->queueMutex));
 }
@@ -550,30 +586,29 @@ Tcl_DeleteEvents(proc, clientData)
  *
  * Tcl_ServiceEvent --
  *
- *	Process one event from the event queue, or invoke an
- *	asynchronous event handler.  Operates on event queue for
- *	current thread.
+ *	Process one event from the event queue, or invoke an asynchronous
+ *	event handler. Operates on event queue for current thread.
  *
  * Results:
- *	The return value is 1 if the procedure actually found an event
- *	to process.  If no processing occurred, then 0 is returned.
+ *	The return value is 1 if the function actually found an event to
+ *	process. If no processing occurred, then 0 is returned.
  *
  * Side effects:
- *	Invokes all of the event handlers for the highest priority
- *	event in the event queue.  May collapse some events into a
- *	single event or discard stale events.
+ *	Invokes all of the event handlers for the highest priority event in
+ *	the event queue. May collapse some events into a single event or
+ *	discard stale events.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ServiceEvent(flags)
-    int flags;			/* Indicates what events should be processed.
+Tcl_ServiceEvent(
+    int flags)			/* Indicates what events should be processed.
 				 * May be any combination of TCL_WINDOW_EVENTS
 				 * TCL_FILE_EVENTS, TCL_TIMER_EVENTS, or other
-				 * flags defined elsewhere.  Events not
-				 * matching this will be skipped for processing
-				 * later. */
+				 * flags defined elsewhere. Events not
+				 * matching this will be skipped for
+				 * processing later. */
 {
     Tcl_Event *evPtr, *prevPtr;
     Tcl_EventProc *proc;
@@ -581,46 +616,46 @@ Tcl_ServiceEvent(flags)
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     /*
-     * Asynchronous event handlers are considered to be the highest
-     * priority events, and so must be invoked before we process events
-     * on the event queue.
+     * Asynchronous event handlers are considered to be the highest priority
+     * events, and so must be invoked before we process events on the event
+     * queue.
      */
-    
+
     if (Tcl_AsyncReady()) {
-	(void) Tcl_AsyncInvoke((Tcl_Interp *) NULL, 0);
+	(void) Tcl_AsyncInvoke(NULL, 0);
 	return 1;
     }
 
     /*
      * No event flags is equivalent to TCL_ALL_EVENTS.
      */
-    
+
     if ((flags & TCL_ALL_EVENTS) == 0) {
 	flags |= TCL_ALL_EVENTS;
     }
 
     /*
-     * Loop through all the events in the queue until we find one
-     * that can actually be handled.
+     * Loop through all the events in the queue until we find one that can
+     * actually be handled.
      */
 
     Tcl_MutexLock(&(tsdPtr->queueMutex));
     for (evPtr = tsdPtr->firstEventPtr; evPtr != NULL;
-	 evPtr = evPtr->nextPtr) {
+	    evPtr = evPtr->nextPtr) {
 	/*
-	 * Call the handler for the event.  If it actually handles the
-	 * event then free the storage for the event.  There are two
-	 * tricky things here, both stemming from the fact that the event
-	 * code may be re-entered while servicing the event:
+	 * Call the handler for the event. If it actually handles the event
+	 * then free the storage for the event. There are two tricky things
+	 * here, both stemming from the fact that the event code may be
+	 * re-entered while servicing the event:
 	 *
 	 * 1. Set the "proc" field to NULL.  This is a signal to ourselves
-	 *    that we shouldn't reexecute the handler if the event loop
-	 *    is re-entered.
+	 *    that we shouldn't reexecute the handler if the event loop is
+	 *    re-entered.
 	 * 2. When freeing the event, must search the queue again from the
-	 *    front to find it.  This is because the event queue could
-	 *    change almost arbitrarily while handling the event, so we
-	 *    can't depend on pointers found now still being valid when
-	 *    the handler returns.
+	 *    front to find it. This is because the event queue could change
+	 *    almost arbitrarily while handling the event, so we can't depend
+	 *    on pointers found now still being valid when the handler
+	 *    returns.
 	 */
 
 	proc = evPtr->proc;
@@ -630,10 +665,10 @@ Tcl_ServiceEvent(flags)
 	evPtr->proc = NULL;
 
 	/*
-	 * Release the lock before calling the event procedure.  This
-	 * allows other threads to post events if we enter a recursive
-	 * event loop in this thread.  Note that we are making the assumption
-	 * that if the proc returns 0, the event is still in the list.
+	 * Release the lock before calling the event function. This allows
+	 * other threads to post events if we enter a recursive event loop in
+	 * this thread. Note that we are making the assumption that if the
+	 * proc returns 0, the event is still in the list.
 	 */
 
 	Tcl_MutexUnlock(&(tsdPtr->queueMutex));
@@ -655,8 +690,8 @@ Tcl_ServiceEvent(flags)
 		}
 	    } else {
 		for (prevPtr = tsdPtr->firstEventPtr;
-		     prevPtr && prevPtr->nextPtr != evPtr;
-		     prevPtr = prevPtr->nextPtr) {
+			prevPtr && prevPtr->nextPtr != evPtr;
+			prevPtr = prevPtr->nextPtr) {
 		    /* Empty loop body. */
 		}
 		if (prevPtr) {
@@ -678,8 +713,8 @@ Tcl_ServiceEvent(flags)
 	    return 1;
 	} else {
 	    /*
-	     * The event wasn't actually handled, so we have to restore
-	     * the proc field to allow the event to be attempted again.
+	     * The event wasn't actually handled, so we have to restore the
+	     * proc field to allow the event to be attempted again.
 	     */
 
 	    evPtr->proc = proc;
@@ -706,7 +741,7 @@ Tcl_ServiceEvent(flags)
  */
 
 int
-Tcl_GetServiceMode()
+Tcl_GetServiceMode(void)
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
@@ -724,14 +759,14 @@ Tcl_GetServiceMode()
  *	Returns the previous service mode.
  *
  * Side effects:
- *	Invokes the notifier service mode hook procedure.
+ *	Invokes the notifier service mode hook function.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_SetServiceMode(mode)
-    int mode;			/* New service mode: TCL_SERVICE_ALL or
+Tcl_SetServiceMode(
+    int mode)			/* New service mode: TCL_SERVICE_ALL or
 				 * TCL_SERVICE_NONE */
 {
     int oldMode;
@@ -750,10 +785,10 @@ Tcl_SetServiceMode(mode)
  *
  * Tcl_SetMaxBlockTime --
  *
- *	This procedure is invoked by event sources to tell the notifier
- *	how long it may block the next time it blocks.  The timePtr
- *	argument gives a maximum time;  the actual time may be less if
- *	some other event source requested a smaller time.
+ *	This function is invoked by event sources to tell the notifier how
+ *	long it may block the next time it blocks. The timePtr argument gives
+ *	a maximum time; the actual time may be less if some other event source
+ *	requested a smaller time.
  *
  * Results:
  *	None.
@@ -765,10 +800,10 @@ Tcl_SetServiceMode(mode)
  */
 
 void
-Tcl_SetMaxBlockTime(timePtr)
-    Tcl_Time *timePtr;		/* Specifies a maximum elapsed time for
-				 * the next blocking operation in the
-				 * event tsdPtr-> */
+Tcl_SetMaxBlockTime(
+    Tcl_Time *timePtr)		/* Specifies a maximum elapsed time for the
+				 * next blocking operation in the event
+				 * tsdPtr-> */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
@@ -780,8 +815,8 @@ Tcl_SetMaxBlockTime(timePtr)
     }
 
     /*
-     * If we are called outside an event source traversal, set the
-     * timeout immediately.
+     * If we are called outside an event source traversal, set the timeout
+     * immediately.
      */
 
     if (!tsdPtr->inTraversal) {
@@ -798,27 +833,27 @@ Tcl_SetMaxBlockTime(timePtr)
  *
  * Tcl_DoOneEvent --
  *
- *	Process a single event of some sort.  If there's no work to
- *	do, wait for an event to occur, then process it.
+ *	Process a single event of some sort. If there's no work to do, wait
+ *	for an event to occur, then process it.
  *
  * Results:
- *	The return value is 1 if the procedure actually found an event
- *	to process.  If no processing occurred, then 0 is returned (this
- *	can happen if the TCL_DONT_WAIT flag is set or if there are no
- *	event handlers to wait for in the set specified by flags).
+ *	The return value is 1 if the function actually found an event to
+ *	process. If no processing occurred, then 0 is returned (this can
+ *	happen if the TCL_DONT_WAIT flag is set or if there are no event
+ *	handlers to wait for in the set specified by flags).
  *
  * Side effects:
- *	May delay execution of process while waiting for an event,
- *	unless TCL_DONT_WAIT is set in the flags argument.  Event
- *	sources are invoked to check for and queue events.  Event
- *	handlers may produce arbitrary side effects.
+ *	May delay execution of process while waiting for an event, unless
+ *	TCL_DONT_WAIT is set in the flags argument. Event sources are invoked
+ *	to check for and queue events. Event handlers may produce arbitrary
+ *	side effects.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_DoOneEvent(flags)
-    int flags;			/* Miscellaneous flag values:  may be any
+Tcl_DoOneEvent(
+    int flags)			/* Miscellaneous flag values: may be any
 				 * combination of TCL_DONT_WAIT,
 				 * TCL_WINDOW_EVENTS, TCL_FILE_EVENTS,
 				 * TCL_TIMER_EVENTS, TCL_IDLE_EVENTS, or
@@ -830,47 +865,45 @@ Tcl_DoOneEvent(flags)
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
 
     /*
-     * The first thing we do is to service any asynchronous event
-     * handlers.
+     * The first thing we do is to service any asynchronous event handlers.
      */
-    
+
     if (Tcl_AsyncReady()) {
-	(void) Tcl_AsyncInvoke((Tcl_Interp *) NULL, 0);
+	(void) Tcl_AsyncInvoke(NULL, 0);
 	return 1;
     }
 
     /*
      * No event flags is equivalent to TCL_ALL_EVENTS.
      */
-    
+
     if ((flags & TCL_ALL_EVENTS) == 0) {
 	flags |= TCL_ALL_EVENTS;
     }
 
     /*
-     * Set the service mode to none so notifier event routines won't
-     * try to service events recursively.
+     * Set the service mode to none so notifier event routines won't try to
+     * service events recursively.
      */
 
     oldMode = tsdPtr->serviceMode;
     tsdPtr->serviceMode = TCL_SERVICE_NONE;
 
     /*
-     * The core of this procedure is an infinite loop, even though
-     * we only service one event.  The reason for this is that we
-     * may be processing events that don't do anything inside of Tcl.
+     * The core of this function is an infinite loop, even though we only
+     * service one event. The reason for this is that we may be processing
+     * events that don't do anything inside of Tcl.
      */
 
     while (1) {
-
 	/*
-	 * If idle events are the only things to service, skip the
-	 * main part of the loop and go directly to handle idle
-	 * events (i.e. don't wait even if TCL_DONT_WAIT isn't set).
+	 * If idle events are the only things to service, skip the main part
+	 * of the loop and go directly to handle idle events (i.e. don't wait
+	 * even if TCL_DONT_WAIT isn't set).
 	 */
 
 	if ((flags & TCL_ALL_EVENTS) == TCL_IDLE_EVENTS) {
-	    flags = TCL_IDLE_EVENTS|TCL_DONT_WAIT;
+	    flags = TCL_IDLE_EVENTS | TCL_DONT_WAIT;
 	    goto idleEvents;
 	}
 
@@ -884,8 +917,8 @@ Tcl_DoOneEvent(flags)
 	}
 
 	/*
-	 * If TCL_DONT_WAIT is set, be sure to poll rather than
-	 * blocking, otherwise reset the block time to infinity.
+	 * If TCL_DONT_WAIT is set, be sure to poll rather than blocking,
+	 * otherwise reset the block time to infinity.
 	 */
 
 	if (flags & TCL_DONT_WAIT) {
@@ -897,13 +930,13 @@ Tcl_DoOneEvent(flags)
 	}
 
 	/*
-	 * Set up all the event sources for new events.  This will
-	 * cause the block time to be updated if necessary.
+	 * Set up all the event sources for new events. This will cause the
+	 * block time to be updated if necessary.
 	 */
 
 	tsdPtr->inTraversal = 1;
 	for (sourcePtr = tsdPtr->firstEventSourcePtr; sourcePtr != NULL;
-	     sourcePtr = sourcePtr->nextPtr) {
+		sourcePtr = sourcePtr->nextPtr) {
 	    if (sourcePtr->setupProc) {
 		(sourcePtr->setupProc)(sourcePtr->clientData, flags);
 	    }
@@ -917,8 +950,8 @@ Tcl_DoOneEvent(flags)
 	}
 
 	/*
-	 * Wait for a new event or a timeout.  If Tcl_WaitForEvent
-	 * returns -1, we should abort Tcl_DoOneEvent.
+	 * Wait for a new event or a timeout. If Tcl_WaitForEvent returns -1,
+	 * we should abort Tcl_DoOneEvent.
 	 */
 
 	result = Tcl_WaitForEvent(timePtr);
@@ -932,7 +965,7 @@ Tcl_DoOneEvent(flags)
 	 */
 
 	for (sourcePtr = tsdPtr->firstEventSourcePtr; sourcePtr != NULL;
-	     sourcePtr = sourcePtr->nextPtr) {
+		sourcePtr = sourcePtr->nextPtr) {
 	    if (sourcePtr->checkProc) {
 		(sourcePtr->checkProc)(sourcePtr->clientData, flags);
 	    }
@@ -948,12 +981,12 @@ Tcl_DoOneEvent(flags)
 	}
 
 	/*
-	 * We've tried everything at this point, but nobody we know
-	 * about had anything to do.  Check for idle events.  If none,
-	 * either quit or go back to the top and try again.
+	 * We've tried everything at this point, but nobody we know about had
+	 * anything to do. Check for idle events. If none, either quit or go
+	 * back to the top and try again.
 	 */
 
-	idleEvents:
+    idleEvents:
 	if (flags & TCL_IDLE_EVENTS) {
 	    if (TclServiceIdle()) {
 		result = 1;
@@ -965,23 +998,21 @@ Tcl_DoOneEvent(flags)
 	}
 
 	/*
-	 * If Tcl_WaitForEvent has returned 1,
-	 * indicating that one system event has been dispatched
-	 * (and thus that some Tcl code might have been indirectly executed),
-	 * we break out of the loop.
-	 * We do this to give VwaitCmd for instance a chance to check 
-	 * if that system event had the side effect of changing the 
-	 * variable (so the vwait can return and unwind properly).
+	 * If Tcl_WaitForEvent has returned 1, indicating that one system
+	 * event has been dispatched (and thus that some Tcl code might have
+	 * been indirectly executed), we break out of the loop. We do this to
+	 * give VwaitCmd for instance a chance to check if that system event
+	 * had the side effect of changing the variable (so the vwait can
+	 * return and unwind properly).
 	 *
-	 * NB: We will process idle events if any first, because
-	 *     otherwise we might never do the idle events if the notifier
-	 *     always gets system events.
+	 * NB: We will process idle events if any first, because otherwise we
+	 *     might never do the idle events if the notifier always gets
+	 *     system events.
 	 */
 
 	if (result) {
 	    break;
 	}
-
     }
 
     tsdPtr->serviceMode = oldMode;
@@ -993,12 +1024,11 @@ Tcl_DoOneEvent(flags)
  *
  * Tcl_ServiceAll --
  *
- *	This routine checks all of the event sources, processes
- *	events that are on the Tcl event queue, and then calls the
- *	any idle handlers.  Platform specific notifier callbacks that
- *	generate events should call this routine before returning to
- *	the system in order to ensure that Tcl gets a chance to
- *	process the new events.
+ *	This routine checks all of the event sources, processes events that
+ *	are on the Tcl event queue, and then calls the any idle handlers.
+ *	Platform specific notifier callbacks that generate events should call
+ *	this routine before returning to the system in order to ensure that
+ *	Tcl gets a chance to process the new events.
  *
  * Results:
  *	Returns 1 if an event or idle handler was invoked, else 0.
@@ -1010,7 +1040,7 @@ Tcl_DoOneEvent(flags)
  */
 
 int
-Tcl_ServiceAll()
+Tcl_ServiceAll(void)
 {
     int result = 0;
     EventSource *sourcePtr;
@@ -1021,10 +1051,10 @@ Tcl_ServiceAll()
     }
 
     /*
-     * We need to turn off event servicing like we to in Tcl_DoOneEvent,
-     * to avoid recursive calls.
+     * We need to turn off event servicing like we to in Tcl_DoOneEvent, to
+     * avoid recursive calls.
      */
-    
+
     tsdPtr->serviceMode = TCL_SERVICE_NONE;
 
     /*
@@ -1032,26 +1062,26 @@ Tcl_ServiceAll()
      */
 
     if (Tcl_AsyncReady()) {
-	(void) Tcl_AsyncInvoke((Tcl_Interp *) NULL, 0);
+	(void) Tcl_AsyncInvoke(NULL, 0);
     }
 
     /*
-     * Make a single pass through all event sources, queued events,
-     * and idle handlers.  Note that we wait to update the notifier
-     * timer until the end so we can avoid multiple changes.
+     * Make a single pass through all event sources, queued events, and idle
+     * handlers. Note that we wait to update the notifier timer until the end
+     * so we can avoid multiple changes.
      */
 
     tsdPtr->inTraversal = 1;
     tsdPtr->blockTimeSet = 0;
 
     for (sourcePtr = tsdPtr->firstEventSourcePtr; sourcePtr != NULL;
-	 sourcePtr = sourcePtr->nextPtr) {
+	    sourcePtr = sourcePtr->nextPtr) {
 	if (sourcePtr->setupProc) {
 	    (sourcePtr->setupProc)(sourcePtr->clientData, TCL_ALL_EVENTS);
 	}
     }
     for (sourcePtr = tsdPtr->firstEventSourcePtr; sourcePtr != NULL;
-	 sourcePtr = sourcePtr->nextPtr) {
+	    sourcePtr = sourcePtr->nextPtr) {
 	if (sourcePtr->checkProc) {
 	    (sourcePtr->checkProc)(sourcePtr->clientData, TCL_ALL_EVENTS);
 	}
@@ -1079,8 +1109,8 @@ Tcl_ServiceAll()
  *
  * Tcl_ThreadAlert --
  *
- *	This function wakes up the notifier associated with the
- *	specified thread (if there is one).  
+ *	This function wakes up the notifier associated with the specified
+ *	thread (if there is one).
  *
  * Results:
  *	None.
@@ -1092,16 +1122,15 @@ Tcl_ServiceAll()
  */
 
 void
-Tcl_ThreadAlert(threadId)
-    Tcl_ThreadId threadId;	/* Identifier for thread to use. */
+Tcl_ThreadAlert(
+    Tcl_ThreadId threadId)	/* Identifier for thread to use. */
 {
     ThreadSpecificData *tsdPtr;
 
     /*
-     * Find the notifier associated with the specified thread.
-     * Note that we need to hold the listLock while calling
-     * Tcl_AlertNotifier to avoid a race condition where
-     * the specified thread might destroy its notifier.
+     * Find the notifier associated with the specified thread. Note that we
+     * need to hold the listLock while calling Tcl_AlertNotifier to avoid a
+     * race condition where the specified thread might destroy its notifier.
      */
 
     Tcl_MutexLock(&listLock);
@@ -1115,3 +1144,11 @@ Tcl_ThreadAlert(threadId)
     }
     Tcl_MutexUnlock(&listLock);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclObj.c b/generic/tclObj.c
index 7b9bb61..24b818b 100644
--- a/generic/tclObj.c
+++ b/generic/tclObj.c
@@ -1,28 +1,30 @@
-/* 
+/*
  * tclObj.c --
  *
- *	This file contains Tcl object-related procedures that are used by
- * 	many Tcl commands.
+ *	This file contains Tcl object-related functions that are used by many
+ *	Tcl commands.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  * Copyright (c) 1999 by Scriptics Corporation.
  * Copyright (c) 2001 by ActiveState Corporation.
+ * Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
  * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclCompile.h"
-#include "tclPort.h"
+#include "tommath.h"
+#include <float.h>
+#include <math.h>
 
 /*
  * Table of all object types.
  */
 
 static Tcl_HashTable typeTable;
-static int typeTableInitialized = 0;    /* 0 means not yet initialized. */
+static int typeTableInitialized = 0;	/* 0 means not yet initialized. */
 TCL_DECLARE_MUTEX(tableMutex)
 
 /*
@@ -32,259 +34,379 @@ TCL_DECLARE_MUTEX(tableMutex)
 Tcl_Obj *tclFreeObjList = NULL;
 
 /*
- * The object allocator is single threaded.  This mutex is referenced
- * by the TclNewObj macro, however, so must be visible.
+ * The object allocator is single threaded. This mutex is referenced by the
+ * TclNewObj macro, however, so must be visible.
  */
 
 #ifdef TCL_THREADS
+MODULE_SCOPE Tcl_Mutex tclObjMutex;
 Tcl_Mutex tclObjMutex;
 #endif
 
 /*
- * Pointer to a heap-allocated string of length zero that the Tcl core uses
- * as the value of an empty string representation for an object. This value
- * is shared by all new objects allocated by Tcl_NewObj.
+ * Pointer to a heap-allocated string of length zero that the Tcl core uses as
+ * the value of an empty string representation for an object. This value is
+ * shared by all new objects allocated by Tcl_NewObj.
  */
 
 char tclEmptyString = '\0';
 char *tclEmptyStringRep = &tclEmptyString;
+
+#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
+/*
+ * Structure for tracking the source file and line number where a given Tcl_Obj
+ * was allocated.  We also track the pointer to the Tcl_Obj itself, for sanity
+ * checking purposes.
+ */
 
+typedef struct ObjData {
+    Tcl_Obj *objPtr;		/* The pointer to the allocated Tcl_Obj. */
+    CONST char *file;		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line;			/* Line number in the source file; used for
+				 * debugging. */
+} ObjData;
+#endif /* TCL_MEM_DEBUG && TCL_THREADS */
 
-#ifdef TCL_TIP280
 /*
- * All static variables used in this file are collected into a single
- * instance of the following structure.  For multi-threaded implementations,
- * there is one instance of this structure for each thread.
+ * All static variables used in this file are collected into a single instance
+ * of the following structure.  For multi-threaded implementations, there is
+ * one instance of this structure for each thread.
  *
- * Notice that different structures with the same name appear in other
- * files.  The structure defined below is used in this file only.
+ * Notice that different structures with the same name appear in other files.
+ * The structure defined below is used in this file only.
  */
 
 typedef struct ThreadSpecificData {
-  Tcl_HashTable* lineCLPtr; /* This table remembers for each Tcl_Obj generated
-			     * by a call to the function EvalTokensStandard()
-			     * from a literal text where bs+nl sequences
-			     * occured in it, if any. I.e. this table keeps
-			     * track of invisible/stripped continuation
-			     * lines. Its keys are Tcl_Obj pointers, the
-			     * values are ContLineLoc pointers.  See the file
-			     * tclCompile.h for the definition of this
-			     * structure, and for references to all related
-			     * places in the core.
-			     */
+    Tcl_HashTable* lineCLPtr; /* This table remembers for each Tcl_Obj
+			       * generated by a call to the function
+			       * TclSubstTokens() from a literal text
+			       * where bs+nl sequences occured in it, if
+			       * any. I.e. this table keeps track of
+			       * invisible/stripped continuation lines. Its
+			       * keys are Tcl_Obj pointers, the values are
+			       * ContLineLoc pointers.  See the file
+			       * tclCompile.h for the definition of this
+			       * structure, and for references to all related
+			       * places in the core.
+			       */
+#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
+    /*
+     * Thread local table that is used to check that a Tcl_Obj was not
+     * allocated by some other thread.
+     */
+
+    Tcl_HashTable *objThreadMap;
+#endif /* TCL_MEM_DEBUG && TCL_THREADS */
 } ThreadSpecificData;
 
 static Tcl_ThreadDataKey dataKey;
 
-static void ContLineLocFree _ANSI_ARGS_((char* clientData));
-static void TclThreadFinalizeObjects _ANSI_ARGS_((ClientData clientData));
-static ThreadSpecificData* TclGetContinuationTable _ANSI_ARGS_(());
+static void ContLineLocFree (char* clientData);
+static void TclThreadFinalizeContLines (ClientData clientData);
+static ThreadSpecificData* TclGetContLineTable (void);
+
+/*
+ * Nested Tcl_Obj deletion management support
+ *
+ * All context references used in the object freeing code are pointers to this
+ * structure; every thread will have its own structure instance. The purpose
+ * of this structure is to allow deeply nested collections of Tcl_Objs to be
+ * freed without taking a vast depth of C stack (which could cause all sorts
+ * of breakage.)
+ */
+
+typedef struct PendingObjData {
+    int deletionCount;		/* Count of the number of invokations of
+				 * TclFreeObj() are on the stack (at least
+				 * conceptually; many are actually expanded
+				 * macros). */
+    Tcl_Obj *deletionStack;	/* Stack of objects that have had TclFreeObj()
+				 * invoked upon them but which can't be
+				 * deleted yet because they are in a nested
+				 * invokation of TclFreeObj(). By postponing
+				 * this way, we limit the maximum overall C
+				 * stack depth when deleting a complex object.
+				 * The down-side is that we alter the overall
+				 * behaviour by altering the order in which
+				 * objects are deleted, and we change the
+				 * order in which the string rep and the
+				 * internal rep of an object are deleted. Note
+				 * that code which assumes the previous
+				 * behaviour in either of these respects is
+				 * unsafe anyway; it was never documented as
+				 * to exactly what would happen in these
+				 * cases, and the overall contract of a
+				 * user-level Tcl_DecrRefCount() is still
+				 * preserved (assuming that a particular T_DRC
+				 * would delete an object is not very
+				 * safe). */
+} PendingObjData;
+
+/*
+ * These are separated out so that some semantic content is attached
+ * to them.
+ */
+#define ObjDeletionLock(contextPtr)	((contextPtr)->deletionCount++)
+#define ObjDeletionUnlock(contextPtr)	((contextPtr)->deletionCount--)
+#define ObjDeletePending(contextPtr)	((contextPtr)->deletionCount > 0)
+#define ObjOnStack(contextPtr)		((contextPtr)->deletionStack != NULL)
+#define PushObjToDelete(contextPtr,objPtr) \
+    /* The string rep is already invalidated so we can use the bytes value \
+     * for our pointer chain: push onto the head of the stack. */ \
+    (objPtr)->bytes = (char *) ((contextPtr)->deletionStack); \
+    (contextPtr)->deletionStack = (objPtr)
+#define PopObjToDelete(contextPtr,objPtrVar) \
+    (objPtrVar) = (contextPtr)->deletionStack; \
+    (contextPtr)->deletionStack = (Tcl_Obj *) (objPtrVar)->bytes
+
+/*
+ * Macro to set up the local reference to the deletion context.
+ */
+#ifndef TCL_THREADS
+static PendingObjData pendingObjData;
+#define ObjInitDeletionContext(contextPtr) \
+    PendingObjData *CONST contextPtr = &pendingObjData
+#else
+static Tcl_ThreadDataKey pendingObjDataKey;
+#define ObjInitDeletionContext(contextPtr) \
+    PendingObjData *CONST contextPtr = (PendingObjData *) \
+	    Tcl_GetThreadData(&pendingObjDataKey, sizeof(PendingObjData))
 #endif
 
 /*
- * Prototypes for procedures defined later in this file:
+ * Macros to pack/unpack a bignum's fields in a Tcl_Obj internal rep
  */
 
-static int		SetBooleanFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static int		SetDoubleFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static int		SetIntFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static int		SetIntOrWideFromAny _ANSI_ARGS_((Tcl_Interp* interp,
-							 Tcl_Obj *objPtr));
-static void		UpdateStringOfBoolean _ANSI_ARGS_((Tcl_Obj *objPtr));
-static void		UpdateStringOfDouble _ANSI_ARGS_((Tcl_Obj *objPtr));
-static void		UpdateStringOfInt _ANSI_ARGS_((Tcl_Obj *objPtr));
-static int		SetWideIntFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
+#define PACK_BIGNUM(bignum, objPtr) \
+    if ((bignum).used > 0x7fff) { \
+	mp_int *temp = (void *) ckalloc((unsigned) sizeof(mp_int)); \
+	*temp = bignum; \
+	(objPtr)->internalRep.ptrAndLongRep.ptr = (void*) temp; \
+	(objPtr)->internalRep.ptrAndLongRep.value = (unsigned long)(-1); \
+    } else { \
+	if ((bignum).alloc > 0x7fff) { \
+	    mp_shrink(&(bignum)); \
+	} \
+	(objPtr)->internalRep.ptrAndLongRep.ptr = (void*) (bignum).dp; \
+	(objPtr)->internalRep.ptrAndLongRep.value = ( ((bignum).sign << 30) \
+		| ((bignum).alloc << 15) | ((bignum).used)); \
+    }
+
+#define UNPACK_BIGNUM(objPtr, bignum) \
+    if ((objPtr)->internalRep.ptrAndLongRep.value == (unsigned long)(-1)) { \
+	(bignum) = *((mp_int *) ((objPtr)->internalRep.ptrAndLongRep.ptr)); \
+    } else { \
+	(bignum).dp = (mp_digit*) (objPtr)->internalRep.ptrAndLongRep.ptr; \
+	(bignum).sign = (objPtr)->internalRep.ptrAndLongRep.value >> 30; \
+	(bignum).alloc = \
+		((objPtr)->internalRep.ptrAndLongRep.value >> 15) & 0x7fff; \
+	(bignum).used = (objPtr)->internalRep.ptrAndLongRep.value & 0x7fff; \
+    }
 
-#ifndef TCL_WIDE_INT_IS_LONG
-static void		UpdateStringOfWideInt _ANSI_ARGS_((Tcl_Obj *objPtr));
+/*
+ * Prototypes for functions defined later in this file:
+ */
+
+static int		ParseBoolean(Tcl_Obj *objPtr);
+static int		SetBooleanFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static int		SetDoubleFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static int		SetIntFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static void		UpdateStringOfDouble(Tcl_Obj *objPtr);
+static void		UpdateStringOfInt(Tcl_Obj *objPtr);
+#ifndef NO_WIDE_TYPE
+static void		UpdateStringOfWideInt(Tcl_Obj *objPtr);
+static int		SetWideIntFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
 #endif
+static void		FreeBignum(Tcl_Obj *objPtr);
+static void		DupBignum(Tcl_Obj *objPtr, Tcl_Obj *copyPtr);
+static void		UpdateStringOfBignum(Tcl_Obj *objPtr);
+static int		GetBignumFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+			    int copy, mp_int *bignumValue);
 
 /*
  * Prototypes for the array hash key methods.
  */
 
-static Tcl_HashEntry *	AllocObjEntry _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr, VOID *keyPtr));
-static int		CompareObjKeys _ANSI_ARGS_((
-			    VOID *keyPtr, Tcl_HashEntry *hPtr));
-static void		FreeObjEntry _ANSI_ARGS_((
-			    Tcl_HashEntry *hPtr));
-static unsigned int	HashObjKey _ANSI_ARGS_((
-			    Tcl_HashTable *tablePtr,
-			    VOID *keyPtr));
+static Tcl_HashEntry *	AllocObjEntry(Tcl_HashTable *tablePtr, void *keyPtr);
 
 /*
  * Prototypes for the CommandName object type.
  */
 
-static void		DupCmdNameInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr,
-			    Tcl_Obj *copyPtr));
-static void		FreeCmdNameInternalRep _ANSI_ARGS_((
-    			    Tcl_Obj *objPtr));
-static int		SetCmdNameFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-
+static void		DupCmdNameInternalRep(Tcl_Obj *objPtr,
+			    Tcl_Obj *copyPtr);
+static void		FreeCmdNameInternalRep(Tcl_Obj *objPtr);
+static int		SetCmdNameFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
 
 /*
  * The structures below defines the Tcl object types defined in this file by
- * means of procedures that can be invoked by generic object code. See also
+ * means of functions that can be invoked by generic object code. See also
  * tclStringObj.c, tclListObj.c, tclByteCode.c for other type manager
  * implementations.
  */
 
-Tcl_ObjType tclBooleanType = {
+static Tcl_ObjType oldBooleanType = {
     "boolean",				/* name */
-    (Tcl_FreeInternalRepProc *) NULL,   /* freeIntRepProc */
-    (Tcl_DupInternalRepProc *) NULL,	/* dupIntRepProc */
-    UpdateStringOfBoolean,		/* updateStringProc */
+    NULL,				/* freeIntRepProc */
+    NULL,				/* dupIntRepProc */
+    NULL,				/* updateStringProc */
+    SetBooleanFromAny			/* setFromAnyProc */
+};
+Tcl_ObjType tclBooleanType = {
+    "booleanString",			/* name */
+    NULL,				/* freeIntRepProc */
+    NULL,				/* dupIntRepProc */
+    NULL,				/* updateStringProc */
     SetBooleanFromAny			/* setFromAnyProc */
 };
-
 Tcl_ObjType tclDoubleType = {
     "double",				/* name */
-    (Tcl_FreeInternalRepProc *) NULL,   /* freeIntRepProc */
-    (Tcl_DupInternalRepProc *) NULL,	/* dupIntRepProc */
+    NULL,				/* freeIntRepProc */
+    NULL,				/* dupIntRepProc */
     UpdateStringOfDouble,		/* updateStringProc */
     SetDoubleFromAny			/* setFromAnyProc */
 };
-
 Tcl_ObjType tclIntType = {
     "int",				/* name */
-    (Tcl_FreeInternalRepProc *) NULL,   /* freeIntRepProc */
-    (Tcl_DupInternalRepProc *) NULL,	/* dupIntRepProc */
+    NULL,				/* freeIntRepProc */
+    NULL,				/* dupIntRepProc */
     UpdateStringOfInt,			/* updateStringProc */
     SetIntFromAny			/* setFromAnyProc */
 };
-
+#ifndef NO_WIDE_TYPE
 Tcl_ObjType tclWideIntType = {
     "wideInt",				/* name */
-    (Tcl_FreeInternalRepProc *) NULL,   /* freeIntRepProc */
-    (Tcl_DupInternalRepProc *) NULL,	/* dupIntRepProc */
-#ifdef TCL_WIDE_INT_IS_LONG
-    UpdateStringOfInt,			/* updateStringProc */
-#else /* !TCL_WIDE_INT_IS_LONG */
+    NULL,				/* freeIntRepProc */
+    NULL,				/* dupIntRepProc */
     UpdateStringOfWideInt,		/* updateStringProc */
-#endif
     SetWideIntFromAny			/* setFromAnyProc */
 };
+#endif
+Tcl_ObjType tclBignumType = {
+    "bignum",				/* name */
+    FreeBignum,				/* freeIntRepProc */
+    DupBignum,				/* dupIntRepProc */
+    UpdateStringOfBignum,		/* updateStringProc */
+    NULL				/* setFromAnyProc */
+};
 
 /*
  * The structure below defines the Tcl obj hash key type.
  */
+
 Tcl_HashKeyType tclObjHashKeyType = {
-    TCL_HASH_KEY_TYPE_VERSION,		/* version */
-    0,					/* flags */
-    HashObjKey,				/* hashKeyProc */
-    CompareObjKeys,			/* compareKeysProc */
-    AllocObjEntry,			/* allocEntryProc */
-    FreeObjEntry			/* freeEntryProc */
+    TCL_HASH_KEY_TYPE_VERSION,	/* version */
+    0,				/* flags */
+    TclHashObjKey,		/* hashKeyProc */
+    TclCompareObjKeys,		/* compareKeysProc */
+    AllocObjEntry,		/* allocEntryProc */
+    TclFreeObjEntry		/* freeEntryProc */
 };
 
 /*
  * The structure below defines the command name Tcl object type by means of
- * procedures that can be invoked by generic object code. Objects of this
- * type cache the Command pointer that results from looking up command names
- * in the command hashtable. Such objects appear as the zeroth ("command
- * name") argument in a Tcl command.
+ * functions that can be invoked by generic object code. Objects of this type
+ * cache the Command pointer that results from looking up command names in the
+ * command hashtable. Such objects appear as the zeroth ("command name")
+ * argument in a Tcl command.
  *
  * NOTE: the ResolvedCmdName that gets cached is stored in the
- * twoPtrValue.ptr1 field, and the twoPtrValue.ptr2 field is unused.
- * You might think you could use the simpler otherValuePtr field to
- * store the single ResolvedCmdName pointer, but DO NOT DO THIS.  It
- * seems that some extensions use the second internal pointer field
- * of the twoPtrValue field for their own purposes.
+ * twoPtrValue.ptr1 field, and the twoPtrValue.ptr2 field is unused. You might
+ * think you could use the simpler otherValuePtr field to store the single
+ * ResolvedCmdName pointer, but DO NOT DO THIS. It seems that some extensions
+ * use the second internal pointer field of the twoPtrValue field for their
+ * own purposes.
  */
 
 static Tcl_ObjType tclCmdNameType = {
     "cmdName",				/* name */
     FreeCmdNameInternalRep,		/* freeIntRepProc */
     DupCmdNameInternalRep,		/* dupIntRepProc */
-    (Tcl_UpdateStringProc *) NULL,	/* updateStringProc */
+    NULL,				/* updateStringProc */
     SetCmdNameFromAny			/* setFromAnyProc */
 };
 
-
 /*
- * Structure containing a cached pointer to a command that is the result
- * of resolving the command's name in some namespace. It is the internal
- * representation for a cmdName object. It contains the pointer along
- * with some information that is used to check the pointer's validity.
+ * Structure containing a cached pointer to a command that is the result of
+ * resolving the command's name in some namespace. It is the internal
+ * representation for a cmdName object. It contains the pointer along with
+ * some information that is used to check the pointer's validity.
  */
 
 typedef struct ResolvedCmdName {
     Command *cmdPtr;		/* A cached Command pointer. */
     Namespace *refNsPtr;	/* Points to the namespace containing the
-				 * reference (not the namespace that
-				 * contains the referenced command). */
+				 * reference (not the namespace that contains
+				 * the referenced command). NULL if the name
+				 * is fully qualified.*/
     long refNsId;		/* refNsPtr's unique namespace id. Used to
-				 * verify that refNsPtr is still valid
-				 * (e.g., it's possible that the cmd's
-				 * containing namespace was deleted and a
-				 * new one created at the same address). */
+				 * verify that refNsPtr is still valid (e.g.,
+				 * it's possible that the cmd's containing
+				 * namespace was deleted and a new one created
+				 * at the same address). */
     int refNsCmdEpoch;		/* Value of the referencing namespace's
 				 * cmdRefEpoch when the pointer was cached.
 				 * Before using the cached pointer, we check
 				 * if the namespace's epoch was incremented;
 				 * if so, this cached pointer is invalid. */
     int cmdEpoch;		/* Value of the command's cmdEpoch when this
-				 * pointer was cached. Before using the
-				 * cached pointer, we check if the cmd's
-				 * epoch was incremented; if so, the cmd was
-				 * renamed, deleted, hidden, or exposed, and
-				 * so the pointer is invalid. */
-    int refCount;		/* Reference count: 1 for each cmdName
-				 * object that has a pointer to this
-				 * ResolvedCmdName structure as its internal
-				 * rep. This structure can be freed when
-				 * refCount becomes zero. */
+				 * pointer was cached. Before using the cached
+				 * pointer, we check if the cmd's epoch was
+				 * incremented; if so, the cmd was renamed,
+				 * deleted, hidden, or exposed, and so the
+				 * pointer is invalid. */
+    int refCount;		/* Reference count: 1 for each cmdName object
+				 * that has a pointer to this ResolvedCmdName
+				 * structure as its internal rep. This
+				 * structure can be freed when refCount
+				 * becomes zero. */
 } ResolvedCmdName;
-
 
 /*
  *-------------------------------------------------------------------------
  *
  * TclInitObjectSubsystem --
  *
- *	This procedure is invoked to perform once-only initialization of
- *	the type table. It also registers the object types defined in 
- *	this file.
+ *	This function is invoked to perform once-only initialization of the
+ *	type table. It also registers the object types defined in this file.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Initializes the table of defined object types "typeTable" with
- *	builtin object types defined in this file.  
+ *	Initializes the table of defined object types "typeTable" with builtin
+ *	object types defined in this file.
  *
  *-------------------------------------------------------------------------
  */
 
 void
-TclInitObjSubsystem()
+TclInitObjSubsystem(void)
 {
     Tcl_MutexLock(&tableMutex);
     typeTableInitialized = 1;
     Tcl_InitHashTable(&typeTable, TCL_STRING_KEYS);
     Tcl_MutexUnlock(&tableMutex);
 
-    Tcl_RegisterObjType(&tclBooleanType);
     Tcl_RegisterObjType(&tclByteArrayType);
     Tcl_RegisterObjType(&tclDoubleType);
     Tcl_RegisterObjType(&tclEndOffsetType);
     Tcl_RegisterObjType(&tclIntType);
-    Tcl_RegisterObjType(&tclWideIntType);
     Tcl_RegisterObjType(&tclStringType);
     Tcl_RegisterObjType(&tclListType);
+    Tcl_RegisterObjType(&tclDictType);
     Tcl_RegisterObjType(&tclByteCodeType);
-    Tcl_RegisterObjType(&tclProcBodyType);
     Tcl_RegisterObjType(&tclArraySearchType);
-    Tcl_RegisterObjType(&tclIndexType);
-    Tcl_RegisterObjType(&tclNsNameType);
     Tcl_RegisterObjType(&tclCmdNameType);
+    Tcl_RegisterObjType(&tclRegexpType);
+    Tcl_RegisterObjType(&tclProcBodyType);
+
+    /* For backward compatibility only ... */
+    Tcl_RegisterObjType(&oldBooleanType);
+#ifndef NO_WIDE_TYPE
+    Tcl_RegisterObjType(&tclWideIntType);
+#endif
 
 #ifdef TCL_COMPILE_STATS
     Tcl_MutexLock(&tclObjMutex);
@@ -292,7 +414,7 @@ TclInitObjSubsystem()
     tclObjsFreed = 0;
     {
 	int i;
-	for (i = 0;  i < TCL_MAX_SHARED_OBJ_STATS;  i++) {
+	for (i=0 ; i<TCL_MAX_SHARED_OBJ_STATS ; i++) {
 	    tclObjsShared[i] = 0;
 	}
     }
@@ -303,10 +425,53 @@ TclInitObjSubsystem()
 /*
  *----------------------------------------------------------------------
  *
+ * TclFinalizeThreadObjects --
+ *
+ *	This function is called by Tcl_FinalizeThread to clean up thread
+ *	specific Tcl_Obj information.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclFinalizeThreadObjects(void)
+{
+#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
+    Tcl_HashEntry *hPtr;
+    Tcl_HashSearch hSearch;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+    Tcl_HashTable *tablePtr = tsdPtr->objThreadMap;
+
+    if (tablePtr != NULL) {
+	for (hPtr = Tcl_FirstHashEntry(tablePtr, &hSearch);
+		hPtr != NULL; hPtr = Tcl_NextHashEntry(&hSearch)) {
+	    ObjData *objData = Tcl_GetHashValue(hPtr);
+
+	    if (objData != NULL) {
+		ckfree((char *) objData);
+	    }
+	}
+
+	Tcl_DeleteHashTable(tablePtr);
+	ckfree((char *) tablePtr);
+	tsdPtr->objThreadMap = NULL;
+    }
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TclFinalizeObjects --
  *
- *	This procedure is called by Tcl_Finalize to clean up all
- *	registered Tcl_ObjType's and to reset the tclFreeObjList.
+ *	This function is called by Tcl_Finalize to clean up all registered
+ *	Tcl_ObjType's and to reset the tclFreeObjList.
  *
  * Results:
  *	None.
@@ -318,37 +483,36 @@ TclInitObjSubsystem()
  */
 
 void
-TclFinalizeObjects()
+TclFinalizeObjects(void)
 {
     Tcl_MutexLock(&tableMutex);
     if (typeTableInitialized) {
-        Tcl_DeleteHashTable(&typeTable);
-        typeTableInitialized = 0;
+	Tcl_DeleteHashTable(&typeTable);
+	typeTableInitialized = 0;
     }
     Tcl_MutexUnlock(&tableMutex);
 
-    /* 
-     * All we do here is reset the head pointer of the linked list of
-     * free Tcl_Obj's to NULL;  the memory finalization will take care
-     * of releasing memory for us.
+    /*
+     * All we do here is reset the head pointer of the linked list of free
+     * Tcl_Obj's to NULL; the memory finalization will take care of releasing
+     * memory for us.
      */
     Tcl_MutexLock(&tclObjMutex);
     tclFreeObjList = NULL;
     Tcl_MutexUnlock(&tclObjMutex);
 }
 
-#ifdef TCL_TIP280
 /*
  *----------------------------------------------------------------------
  *
- * TclGetContinuationTable --
+ * TclGetContLineTable --
  *
  *	This procedure is a helper which returns the thread-specific
  *	hash-table used to track continuation line information associated with
- *	Tcl_Obj*.
+ *	Tcl_Obj*, and the objThreadMap, etc.
  *
  * Results:
- *	A reference to the continuation line thread-data.
+ *	A reference to the thread-data.
  *
  * Side effects:
  *	May allocate memory for the thread-data.
@@ -358,7 +522,7 @@ TclFinalizeObjects()
  */
 
 static ThreadSpecificData*
-TclGetContinuationTable()
+TclGetContLineTable()
 {
     /*
      * Initialize the hashtable tracking invisible continuation lines.  For
@@ -372,7 +536,7 @@ TclGetContinuationTable()
     if (!tsdPtr->lineCLPtr) {
 	tsdPtr->lineCLPtr = (Tcl_HashTable*) ckalloc (sizeof (Tcl_HashTable));
 	Tcl_InitHashTable(tsdPtr->lineCLPtr, TCL_ONE_WORD_KEYS);
-	Tcl_CreateThreadExitHandler (TclThreadFinalizeObjects,NULL);
+	Tcl_CreateThreadExitHandler (TclThreadFinalizeContLines,NULL);
     }
     return tsdPtr;
 }
@@ -396,36 +560,49 @@ TclGetContinuationTable()
  */
 
 ContLineLoc*
-TclContinuationsEnter(objPtr,num,loc)
-     Tcl_Obj* objPtr;
-     int num;
-     int* loc;
+TclContinuationsEnter(Tcl_Obj* objPtr,
+		      int num,
+		      int* loc)
 {
-  int newEntry;
-  ThreadSpecificData *tsdPtr = TclGetContinuationTable();
-  Tcl_HashEntry* hPtr =
-    Tcl_CreateHashEntry (tsdPtr->lineCLPtr, (char*) objPtr, &newEntry);
+    int newEntry;
+    ThreadSpecificData *tsdPtr = TclGetContLineTable();
+    Tcl_HashEntry* hPtr =
+	Tcl_CreateHashEntry (tsdPtr->lineCLPtr, (char*) objPtr, &newEntry);
 
-  ContLineLoc* clLocPtr = 
-    (ContLineLoc*) ckalloc (sizeof(ContLineLoc) + num*sizeof(int));
+    ContLineLoc* clLocPtr = 
+	(ContLineLoc*) ckalloc (sizeof(ContLineLoc) + num*sizeof(int));
 
     if (!newEntry) {
 	/*
-	 * Somehow we're entering ContLineLoc data for the same value (objPtr)
-	 * more than one time.  Not sure whether that's expected, or a sign of
-	 * trouble, but at a minimum, we should take care not to leak the old
-	 * entry.
+	 * We're entering ContLineLoc data for the same value more than one
+	 * time. Taking care not to leak the old entry.
+	 *
+	 * This can happen when literals in a proc body are shared. See for
+	 * example test info-30.19 where the action (code) for all branches of
+	 * the switch command is identical, mapping them all to the same
+	 * literal. An interesting result of this is that the number and
+	 * locations (offset) of invisible continuation lines in the literal
+	 * are the same for all occurences.
+	 *
+	 * Note that while reusing the existing entry is possible it requires
+	 * the same actions as for a new entry because we have to copy the
+	 * incoming num/loc data even so. Because we are called from
+	 * TclContinuationsEnterDerived for this case, which modified the
+	 * stored locations (Rebased to the proper relative offset). Just
+	 * returning the stored entry and data would rebase them a second
+	 * time, or more, hosing the data. It is easier to simply replace, as
+	 * we are doing.
 	 */
 
 	ckfree((char *) Tcl_GetHashValue(hPtr));
     }
 
-  clLocPtr->num = num;
-  memcpy (&clLocPtr->loc, loc, num*sizeof(int));
-  clLocPtr->loc[num] = CLL_END; /* Sentinel */
-  Tcl_SetHashValue (hPtr, clLocPtr);
+    clLocPtr->num = num;
+    memcpy (&clLocPtr->loc, loc, num*sizeof(int));
+    clLocPtr->loc[num] = CLL_END; /* Sentinel */
+    Tcl_SetHashValue (hPtr, clLocPtr);
 
-  return clLocPtr;
+    return clLocPtr;
 }
 
 /*
@@ -448,19 +625,16 @@ TclContinuationsEnter(objPtr,num,loc)
  */
 
 void
-TclContinuationsEnterDerived(objPtr, start, clNext)
-     Tcl_Obj* objPtr;
-     int start;
-     int* clNext;
+TclContinuationsEnterDerived(Tcl_Obj* objPtr, int start, int* clNext)
 {
     /*
      * We have to handle invisible continuations lines here as well, despite
-     * the code we have in EvalTokensStandard (ETS) for that. Why ?
-     * Nesting. If our script is the sole argument to an 'eval' command, for
-     * example, the scriptCLLocPtr we are using here was generated by a
-     * previous call to ETS, and while the words we have here may contain
-     * continuation lines they are invisible already, and the call to ETS
-     * above had no bs+nl sequences to trigger its code.
+     * the code we have in TclSubstTokens (TST) for that. Why ?  Nesting. If
+     * our script is the sole argument to an 'eval' command, for example, the
+     * scriptCLLocPtr we are using was generated by a previous call to TST,
+     * and while the words we have here may contain continuation lines they
+     * are invisible already, and the inner call to TST had no bs+nl sequences
+     * to trigger its code.
      *
      * Luckily for us, the table we have to create here for the current word
      * has to be a slice of the table currently in use, with the locations
@@ -501,7 +675,7 @@ TclContinuationsEnterDerived(objPtr, start, clNext)
     num = wordCLLast - clNext;
     if (num) {
 	int i;
-	ContLineLoc* clLocPtr =
+	ContLineLoc* clLocPtr = 
 	    TclContinuationsEnter(objPtr, num, clNext);
 
 	/*
@@ -547,7 +721,7 @@ TclContinuationsEnterDerived(objPtr, start, clNext)
 void
 TclContinuationsCopy(Tcl_Obj* objPtr, Tcl_Obj* originObjPtr)
 {
-    ThreadSpecificData *tsdPtr = TclGetContinuationTable();
+    ThreadSpecificData *tsdPtr = TclGetContLineTable();
     Tcl_HashEntry* hPtr = Tcl_FindHashEntry (tsdPtr->lineCLPtr, (char*) originObjPtr);
 
     if (hPtr) {
@@ -577,10 +751,9 @@ TclContinuationsCopy(Tcl_Obj* objPtr, Tcl_Obj* originObjPtr)
  */
 
 ContLineLoc*
-TclContinuationsGet(objPtr)
-     Tcl_Obj* objPtr;
+TclContinuationsGet(Tcl_Obj* objPtr)
 {
-    ThreadSpecificData *tsdPtr = TclGetContinuationTable();
+    ThreadSpecificData *tsdPtr = TclGetContLineTable();
     Tcl_HashEntry* hPtr = Tcl_FindHashEntry (tsdPtr->lineCLPtr, (char*) objPtr);
 
     if (hPtr) {
@@ -593,7 +766,7 @@ TclContinuationsGet(objPtr)
 /*
  *----------------------------------------------------------------------
  *
- * TclThreadFinalizeObjects --
+ * TclThreadFinalizeContLines --
  *
  *	This procedure is a helper which releases all continuation line
  *	information currently known. It is run as a thread exit handler.
@@ -609,31 +782,30 @@ TclContinuationsGet(objPtr)
  */
 
 static void
-TclThreadFinalizeObjects (clientData)
-     ClientData clientData;
+TclThreadFinalizeContLines (ClientData clientData)
 {
     /*
      * Release the hashtable tracking invisible continuation lines.
      */
 
+    ThreadSpecificData *tsdPtr = TclGetContLineTable();
     Tcl_HashEntry *hPtr;
     Tcl_HashSearch hSearch;
-    ThreadSpecificData *tsdPtr = TclGetContinuationTable();
 
     for (hPtr = Tcl_FirstHashEntry(tsdPtr->lineCLPtr, &hSearch);
 	 hPtr != NULL;
 	 hPtr = Tcl_NextHashEntry(&hSearch)) {
 	/*
-	 * We are not using Tcl_EventuallyFree (as in
-	 * TclFreeObj()) because here we can be sure that the
-	 * compiler will not hold references to the data in the
-	 * hashtable, and using TEF might bork the finalization
-	 * sequence.
+	 * We are not using Tcl_EventuallyFree (as in TclFreeObj()) because
+	 * here we can be sure that the compiler will not hold references to
+	 * the data in the hashtable, and using TEF might bork the
+	 * finalization sequence.
 	 */
 	ContLineLocFree (Tcl_GetHashValue (hPtr));
 	Tcl_DeleteHashEntry (hPtr);
     }
     Tcl_DeleteHashTable (tsdPtr->lineCLPtr);
+    ckfree((char *) tsdPtr->lineCLPtr);
     tsdPtr->lineCLPtr = NULL;
 }
 
@@ -655,41 +827,41 @@ TclThreadFinalizeObjects (clientData)
  */
 
 static void
-ContLineLocFree (clientData)
-     char* clientData;
+ContLineLocFree (char* clientData)
 {
-  ckfree (clientData);
+    ckfree (clientData);
 }
-#endif
+
 /*
  *--------------------------------------------------------------
  *
  * Tcl_RegisterObjType --
  *
- *	This procedure is called to register a new Tcl object type
- *	in the table of all object types supported by Tcl.
+ *	This function is called to register a new Tcl object type in the table
+ *	of all object types supported by Tcl.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The type is registered in the Tcl type table. If there was already
- *	a type with the same name as in typePtr, it is replaced with the
- *	new type.
+ *	The type is registered in the Tcl type table. If there was already a
+ *	type with the same name as in typePtr, it is replaced with the new
+ *	type.
  *
  *--------------------------------------------------------------
  */
 
 void
-Tcl_RegisterObjType(typePtr)
-    Tcl_ObjType *typePtr;	/* Information about object type;
-				 * storage must be statically
-				 * allocated (must live forever). */
+Tcl_RegisterObjType(
+    Tcl_ObjType *typePtr)	/* Information about object type; storage must
+				 * be statically allocated (must live
+				 * forever). */
 {
-    int new;
+    int isNew;
+
     Tcl_MutexLock(&tableMutex);
     Tcl_SetHashValue(
-	    Tcl_CreateHashEntry(&typeTable, typePtr->name, &new), typePtr);
+	    Tcl_CreateHashEntry(&typeTable, typePtr->name, &isNew), typePtr);
     Tcl_MutexUnlock(&tableMutex);
 }
 
@@ -698,56 +870,54 @@ Tcl_RegisterObjType(typePtr)
  *
  * Tcl_AppendAllObjTypes --
  *
- *	This procedure appends onto the argument object the name of each
- *	object type as a list element. This includes the builtin object
- *	types (e.g. int, list) as well as those added using
- *	Tcl_NewObj. These names can be used, for example, with
- *	Tcl_GetObjType to get pointers to the corresponding Tcl_ObjType
- *	structures.
+ *	This function appends onto the argument object the name of each object
+ *	type as a list element. This includes the builtin object types (e.g.
+ *	int, list) as well as those added using Tcl_NewObj. These names can be
+ *	used, for example, with Tcl_GetObjType to get pointers to the
+ *	corresponding Tcl_ObjType structures.
  *
  * Results:
  *	The return value is normally TCL_OK; in this case the object
- *	referenced by objPtr has each type name appended to it. If an
- *	error occurs, TCL_ERROR is returned and the interpreter's result
- *	holds an error message.
+ *	referenced by objPtr has each type name appended to it. If an error
+ *	occurs, TCL_ERROR is returned and the interpreter's result holds an
+ *	error message.
  *
  * Side effects:
- *	If necessary, the object referenced by objPtr is converted into
- *	a list object.
+ *	If necessary, the object referenced by objPtr is converted into a list
+ *	object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_AppendAllObjTypes(interp, objPtr)
-    Tcl_Interp *interp;		/* Interpreter used for error reporting. */
-    Tcl_Obj *objPtr;		/* Points to the Tcl object onto which the
-				 * name of each registered type is appended
-				 * as a list element. */
+Tcl_AppendAllObjTypes(
+    Tcl_Interp *interp,		/* Interpreter used for error reporting. */
+    Tcl_Obj *objPtr)		/* Points to the Tcl object onto which the
+				 * name of each registered type is appended as
+				 * a list element. */
 {
     register Tcl_HashEntry *hPtr;
     Tcl_HashSearch search;
-    int objc;
-    Tcl_Obj **objv;
+    int numElems;
 
     /*
      * Get the test for a valid list out of the way first.
      */
 
-    if (Tcl_ListObjGetElements(interp, objPtr, &objc, &objv) != TCL_OK) {
+    if (TclListObjLength(interp, objPtr, &numElems) != TCL_OK) {
 	return TCL_ERROR;
     }
 
     /*
-     * Type names are NUL-terminated, not counted strings.
-     * This code relies on that.
+     * Type names are NUL-terminated, not counted strings. This code relies on
+     * that.
      */
 
     Tcl_MutexLock(&tableMutex);
     for (hPtr = Tcl_FirstHashEntry(&typeTable, &search);
-	    hPtr != NULL;  hPtr = Tcl_NextHashEntry(&search)) {
+	    hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
 	Tcl_ListObjAppendElement(NULL, objPtr,
-	        Tcl_NewStringObj(Tcl_GetHashKey(&typeTable, hPtr), -1));
+		Tcl_NewStringObj(Tcl_GetHashKey(&typeTable, hPtr), -1));
     }
     Tcl_MutexUnlock(&tableMutex);
     return TCL_OK;
@@ -758,12 +928,11 @@ Tcl_AppendAllObjTypes(interp, objPtr)
  *
  * Tcl_GetObjType --
  *
- *	This procedure looks up an object type by name.
+ *	This function looks up an object type by name.
  *
  * Results:
- *	If an object type with name matching "typeName" is found, a pointer
- *	to its Tcl_ObjType structure is returned; otherwise, NULL is
- *	returned.
+ *	If an object type with name matching "typeName" is found, a pointer to
+ *	its Tcl_ObjType structure is returned; otherwise, NULL is returned.
  *
  * Side effects:
  *	None.
@@ -772,16 +941,16 @@ Tcl_AppendAllObjTypes(interp, objPtr)
  */
 
 Tcl_ObjType *
-Tcl_GetObjType(typeName)
-    CONST char *typeName;	/* Name of Tcl object type to look up. */
+Tcl_GetObjType(
+    CONST char *typeName)	/* Name of Tcl object type to look up. */
 {
     register Tcl_HashEntry *hPtr;
     Tcl_ObjType *typePtr = NULL;
 
     Tcl_MutexLock(&tableMutex);
     hPtr = Tcl_FindHashEntry(&typeTable, typeName);
-    if (hPtr != (Tcl_HashEntry *) NULL) {
-        typePtr = (Tcl_ObjType *) Tcl_GetHashValue(hPtr);
+    if (hPtr != NULL) {
+	typePtr = (Tcl_ObjType *) Tcl_GetHashValue(hPtr);
     }
     Tcl_MutexUnlock(&tableMutex);
     return typePtr;
@@ -796,10 +965,10 @@ Tcl_GetObjType(typeName)
  *
  * Results:
  *	The return value is TCL_OK on success and TCL_ERROR on failure. If
- *	TCL_ERROR is returned, then the interpreter's result contains an
- *	error message unless "interp" is NULL. Passing a NULL "interp"
- *	allows this procedure to be used as a test whether the conversion
- *	could be done (and in fact was done).
+ *	TCL_ERROR is returned, then the interpreter's result contains an error
+ *	message unless "interp" is NULL. Passing a NULL "interp" allows this
+ *	function to be used as a test whether the conversion could be done
+ *	(and in fact was done).
  *
  * Side effects:
  *	Any internal representation for the old type is freed.
@@ -808,46 +977,174 @@ Tcl_GetObjType(typeName)
  */
 
 int
-Tcl_ConvertToType(interp, objPtr, typePtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* The object to convert. */
-    Tcl_ObjType *typePtr;	/* The target type. */
+Tcl_ConvertToType(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *objPtr,		/* The object to convert. */
+    Tcl_ObjType *typePtr)	/* The target type. */
 {
     if (objPtr->typePtr == typePtr) {
 	return TCL_OK;
     }
 
     /*
-     * Use the target type's Tcl_SetFromAnyProc to set "objPtr"s internal
-     * form as appropriate for the target type. This frees the old internal
+     * Use the target type's Tcl_SetFromAnyProc to set "objPtr"s internal form
+     * as appropriate for the target type. This frees the old internal
      * representation.
      */
 
+    if (typePtr->setFromAnyProc == NULL) {
+	if (interp) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "can't convert value to type %s", typePtr->name));
+	    Tcl_SetErrorCode(interp, "TCL", "API_ABUSE", NULL);
+	}
+	return TCL_ERROR;
+    }
+
     return typePtr->setFromAnyProc(interp, objPtr);
 }
 
 /*
+ *--------------------------------------------------------------
+ *
+ * TclDbDumpActiveObjects --
+ *
+ *	This function is called to dump all of the active Tcl_Obj structs this
+ *	allocator knows about.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *--------------------------------------------------------------
+ */
+
+void
+TclDbDumpActiveObjects(
+    FILE *outFile)
+{
+#if defined(TCL_MEM_DEBUG) && defined(TCL_THREADS)
+    Tcl_HashSearch hSearch;
+    Tcl_HashEntry *hPtr;
+    Tcl_HashTable *tablePtr;
+    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+    tablePtr = tsdPtr->objThreadMap;
+
+    if (tablePtr != NULL) {
+	fprintf(outFile, "total objects: %d\n", tablePtr->numEntries);
+	for (hPtr = Tcl_FirstHashEntry(tablePtr, &hSearch); hPtr != NULL;
+		hPtr = Tcl_NextHashEntry(&hSearch)) {
+	    ObjData *objData = Tcl_GetHashValue(hPtr);
+
+	    if (objData != NULL) {
+		fprintf(outFile,
+			"key = 0x%p, objPtr = 0x%p, file = %s, line = %d\n",
+			Tcl_GetHashKey(tablePtr, hPtr), objData->objPtr,
+			objData->file, objData->line);
+	    } else {
+		fprintf(outFile, "key = 0x%p\n",
+			Tcl_GetHashKey(tablePtr, hPtr));
+	    }
+	}
+    }
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclDbInitNewObj --
+ *
+ *	Called via the TclNewObj or TclDbNewObj macros when TCL_MEM_DEBUG is
+ *	enabled. This function will initialize the members of a Tcl_Obj
+ *	struct. Initilization would be done inline via the TclNewObj macro
+ *	when compiling without TCL_MEM_DEBUG.
+ *
+ * Results:
+ *	The Tcl_Obj struct members are initialized.
+ *
+ * Side effects:
+ *	None.
+ *----------------------------------------------------------------------
+ */
+
+#ifdef TCL_MEM_DEBUG
+void
+TclDbInitNewObj(
+    register Tcl_Obj *objPtr,
+    register CONST char *file,	/* The name of the source file calling this
+				 * function; used for debugging. */
+    register int line)		/* Line number in the source file; used for
+				 * debugging. */
+{
+    objPtr->refCount = 0;
+    objPtr->bytes = tclEmptyStringRep;
+    objPtr->length = 0;
+    objPtr->typePtr = NULL;
+
+#ifdef TCL_THREADS
+    /*
+     * Add entry to a thread local map used to check if a Tcl_Obj was
+     * allocated by the currently executing thread.
+     */
+
+    if (!TclInExit()) {
+	Tcl_HashEntry *hPtr;
+	Tcl_HashTable *tablePtr;
+	int isNew;
+	ObjData *objData;
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	if (tsdPtr->objThreadMap == NULL) {
+	    tsdPtr->objThreadMap = (Tcl_HashTable *)
+		    ckalloc(sizeof(Tcl_HashTable));
+	    Tcl_InitHashTable(tsdPtr->objThreadMap, TCL_ONE_WORD_KEYS);
+	}
+	tablePtr = tsdPtr->objThreadMap;
+	hPtr = Tcl_CreateHashEntry(tablePtr, (char *) objPtr, &isNew);
+	if (!isNew) {
+	    Tcl_Panic("expected to create new entry for object map");
+	}
+
+	/*
+	 * Record the debugging information.
+	 */
+
+	objData = (ObjData *) ckalloc(sizeof(ObjData));
+	objData->objPtr = objPtr;
+	objData->file = file;
+	objData->line = line;
+	Tcl_SetHashValue(hPtr, objData);
+    }
+#endif /* TCL_THREADS */
+}
+#endif /* TCL_MEM_DEBUG */
+
+/*
  *----------------------------------------------------------------------
  *
  * Tcl_NewObj --
  *
- *	This procedure is normally called when not debugging: i.e., when
+ *	This function is normally called when not debugging: i.e., when
  *	TCL_MEM_DEBUG is not defined. It creates new Tcl objects that denote
  *	the empty string. These objects have a NULL object type and NULL
- *	string representation byte pointer. Type managers call this routine
- *	to allocate new objects that they further initialize.
+ *	string representation byte pointer. Type managers call this routine to
+ *	allocate new objects that they further initialize.
  *
- *	When TCL_MEM_DEBUG is defined, this procedure just returns the
- *	result of calling the debugging version Tcl_DbNewObj.
+ *	When TCL_MEM_DEBUG is defined, this function just returns the result
+ *	of calling the debugging version Tcl_DbNewObj.
  *
  * Results:
  *	The result is a newly allocated object that represents the empty
- *	string. The new object's typePtr is set NULL and its ref count
- *	is set to 0.
+ *	string. The new object's typePtr is set NULL and its ref count is set
+ *	to 0.
  *
  * Side effects:
- *	If compiling with TCL_COMPILE_STATS, this procedure increments
- *	the global count of allocated objects (tclObjsAlloced).
+ *	If compiling with TCL_COMPILE_STATS, this function increments the
+ *	global count of allocated objects (tclObjsAlloced).
  *
  *----------------------------------------------------------------------
  */
@@ -856,7 +1153,7 @@ Tcl_ConvertToType(interp, objPtr, typePtr)
 #undef Tcl_NewObj
 
 Tcl_Obj *
-Tcl_NewObj()
+Tcl_NewObj(void)
 {
     return Tcl_DbNewObj("unknown", 0);
 }
@@ -864,13 +1161,12 @@ Tcl_NewObj()
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewObj()
+Tcl_NewObj(void)
 {
     register Tcl_Obj *objPtr;
 
     /*
-     * Use the macro defined in tclInt.h - it will use the
-     * correct allocator.
+     * Use the macro defined in tclInt.h - it will use the correct allocator.
      */
 
     TclNewObj(objPtr);
@@ -883,24 +1179,24 @@ Tcl_NewObj()
  *
  * Tcl_DbNewObj --
  *
- *	This procedure is normally called when debugging: i.e., when
+ *	This function is normally called when debugging: i.e., when
  *	TCL_MEM_DEBUG is defined. It creates new Tcl objects that denote the
- *	empty string. It is the same as the Tcl_NewObj procedure above
- *	except that it calls Tcl_DbCkalloc directly with the file name and
- *	line number from its caller. This simplifies debugging since then
- *	the [memory active] command will report the correct file name and line
+ *	empty string. It is the same as the Tcl_NewObj function above except
+ *	that it calls Tcl_DbCkalloc directly with the file name and line
+ *	number from its caller. This simplifies debugging since then the
+ *	[memory active] command will report the correct file name and line
  *	number when reporting objects that haven't been freed.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just returns the
+ *	When TCL_MEM_DEBUG is not defined, this function just returns the
  *	result of calling Tcl_NewObj.
  *
  * Results:
- *	The result is a newly allocated that represents the empty string.
- *	The new object's typePtr is set NULL and its ref count is set to 0.
+ *	The result is a newly allocated that represents the empty string. The
+ *	new object's typePtr is set NULL and its ref count is set to 0.
  *
  * Side effects:
- *	If compiling with TCL_COMPILE_STATS, this procedure increments
- *	the global count of allocated objects (tclObjsAlloced).
+ *	If compiling with TCL_COMPILE_STATS, this function increments the
+ *	global count of allocated objects (tclObjsAlloced).
  *
  *----------------------------------------------------------------------
  */
@@ -908,17 +1204,16 @@ Tcl_NewObj()
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewObj(file, line)
-    register CONST char *file;	/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    register int line;		/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewObj(
+    register CONST char *file,	/* The name of the source file calling this
+				 * function; used for debugging. */
+    register int line)		/* Line number in the source file; used for
+				 * debugging. */
 {
     register Tcl_Obj *objPtr;
 
     /*
-     * Use the macro defined in tclInt.h - it will use the
-     * correct allocator.
+     * Use the macro defined in tclInt.h - it will use the correct allocator.
      */
 
     TclDbNewObj(objPtr, file, line);
@@ -927,11 +1222,11 @@ Tcl_DbNewObj(file, line)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewObj(file, line)
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewObj(
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewObj();
 }
@@ -942,8 +1237,8 @@ Tcl_DbNewObj(file, line)
  *
  * TclAllocateFreeObjects --
  *
- *	Procedure to allocate a number of free Tcl_Objs. This is done using
- *	a single ckalloc to reduce the overhead for Tcl_Obj allocation.
+ *	Function to allocate a number of free Tcl_Objs. This is done using a
+ *	single ckalloc to reduce the overhead for Tcl_Obj allocation.
  *
  *	Assumes mutex is held.
  *
@@ -953,7 +1248,7 @@ Tcl_DbNewObj(file, line)
  * Side effects:
  *	tclFreeObjList, the head of the list of free Tcl_Objs, is set to the
  *	first of a number of free Tcl_Obj's linked together by their
- *	internalRep.otherValuePtrs.
+ *	internalRep.twoPtrValue.ptr1's.
  *
  *----------------------------------------------------------------------
  */
@@ -961,7 +1256,7 @@ Tcl_DbNewObj(file, line)
 #define OBJS_TO_ALLOC_EACH_TIME 100
 
 void
-TclAllocateFreeObjects()
+TclAllocateFreeObjects(void)
 {
     size_t bytesToAlloc = (OBJS_TO_ALLOC_EACH_TIME * sizeof(Tcl_Obj));
     char *basePtr;
@@ -969,22 +1264,20 @@ TclAllocateFreeObjects()
     register int i;
 
     /*
-     * This has been noted by Purify to be a potential leak.  The problem is
+     * This has been noted by Purify to be a potential leak. The problem is
      * that Tcl, when not TCL_MEM_DEBUG compiled, keeps around all allocated
-     * Tcl_Obj's, pointed to by tclFreeObjList, when freed instead of
-     * actually freeing the memory.  TclFinalizeObjects() does not ckfree()
-     * this memory, but leaves it to Tcl's memory subsystem finalziation to
-     * release it.  Purify apparently can't figure that out, and fires a
-     * false alarm.
+     * Tcl_Obj's, pointed to by tclFreeObjList, when freed instead of actually
+     * freeing the memory. TclFinalizeObjects() does not ckfree() this memory,
+     * but leaves it to Tcl's memory subsystem finalization to release it.
+     * Purify apparently can't figure that out, and fires a false alarm.
      */
 
     basePtr = (char *) ckalloc(bytesToAlloc);
-    memset(basePtr, 0, bytesToAlloc);
 
     prevPtr = NULL;
     objPtr = (Tcl_Obj *) basePtr;
     for (i = 0; i < OBJS_TO_ALLOC_EACH_TIME; i++) {
-	objPtr->internalRep.otherValuePtr = (VOID *) prevPtr;
+	objPtr->internalRep.twoPtrValue.ptr1 = (void *) prevPtr;
 	prevPtr = objPtr;
 	objPtr++;
     }
@@ -997,64 +1290,166 @@ TclAllocateFreeObjects()
  *
  * TclFreeObj --
  *
- *	This procedure frees the memory associated with the argument
- *	object. It is called by the tcl.h macro Tcl_DecrRefCount when an
- *	object's ref count is zero. It is only "public" since it must
- *	be callable by that macro wherever the macro is used. It should not
- *	be directly called by clients.
+ *	This function frees the memory associated with the argument object.
+ *	It is called by the tcl.h macro Tcl_DecrRefCount when an object's ref
+ *	count is zero. It is only "public" since it must be callable by that
+ *	macro wherever the macro is used. It should not be directly called by
+ *	clients.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Deallocates the storage for the object's Tcl_Obj structure
- *	after deallocating the string representation and calling the
- *	type-specific Tcl_FreeInternalRepProc to deallocate the object's
- *	internal representation. If compiling with TCL_COMPILE_STATS,
- *	this procedure increments the global count of freed objects
- *	(tclObjsFreed).
+ *	Deallocates the storage for the object's Tcl_Obj structure after
+ *	deallocating the string representation and calling the type-specific
+ *	Tcl_FreeInternalRepProc to deallocate the object's internal
+ *	representation. If compiling with TCL_COMPILE_STATS, this function
+ *	increments the global count of freed objects (tclObjsFreed).
  *
  *----------------------------------------------------------------------
  */
 
+#ifdef TCL_MEM_DEBUG
 void
-TclFreeObj(objPtr)
-    register Tcl_Obj *objPtr;	/* The object to be freed. */
+TclFreeObj(
+    register Tcl_Obj *objPtr)	/* The object to be freed. */
 {
     register Tcl_ObjType *typePtr = objPtr->typePtr;
-    
-#ifdef TCL_MEM_DEBUG
-    if ((objPtr)->refCount < -1) {
-	panic("Reference count for %lx was negative", objPtr);
+
+    /*
+     * This macro declares a variable, so must come here...
+     */
+
+    ObjInitDeletionContext(context);
+
+    if (objPtr->refCount < -1) {
+	Tcl_Panic("Reference count for %lx was negative", objPtr);
     }
-#endif /* TCL_MEM_DEBUG */
 
-    TCL_DTRACE_OBJ_FREE(objPtr);
-    if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
-	typePtr->freeIntRepProc(objPtr);
+    /* Invalidate the string rep first so we can use the bytes value 
+     * for our pointer chain, and signal an obj deletion (as opposed
+     * to shimmering) with 'length == -1' */ 
+    
+    TclInvalidateStringRep(objPtr);
+    objPtr->length = -1;
+
+    if (ObjDeletePending(context)) {
+	PushObjToDelete(context, objPtr);
+    } else {
+	TCL_DTRACE_OBJ_FREE(objPtr);
+	if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
+	    ObjDeletionLock(context);
+	    typePtr->freeIntRepProc(objPtr);
+	    ObjDeletionUnlock(context);
+	}
+
+	Tcl_MutexLock(&tclObjMutex);
+	ckfree((char *) objPtr);
+	Tcl_MutexUnlock(&tclObjMutex);
+	TclIncrObjsFreed();
+	ObjDeletionLock(context);
+	while (ObjOnStack(context)) {
+	    Tcl_Obj *objToFree;
+
+	    PopObjToDelete(context,objToFree);
+	    TCL_DTRACE_OBJ_FREE(objToFree);
+	    TclFreeIntRep(objToFree);
+
+	    Tcl_MutexLock(&tclObjMutex);
+	    ckfree((char *) objToFree);
+	    Tcl_MutexUnlock(&tclObjMutex);
+	    TclIncrObjsFreed();
+	}
+	ObjDeletionUnlock(context);
     }
-    Tcl_InvalidateStringRep(objPtr);
 
     /*
-     * If debugging Tcl's memory usage, deallocate the object using ckfree.
-     * Otherwise, deallocate it by adding it onto the list of free
-     * Tcl_Obj structs we maintain.
+     * We cannot use TclGetContinuationTable() here, because that may
+     * re-initialize the thread-data for calls coming after the
+     * finalization. We have to access it using the low-level call and then
+     * check for validity. This function can be called after
+     * TclFinalizeThreadData() has already killed the thread-global data
+     * structures. Performing TCL_TSD_INIT will leave us with an
+     * un-initialized memory block upon which we crash (if we where to access
+     * the uninitialized hashtable).
      */
 
-#if defined(TCL_MEM_DEBUG) || defined(PURIFY)
-    Tcl_MutexLock(&tclObjMutex);
-    ckfree((char *) objPtr);
-    Tcl_MutexUnlock(&tclObjMutex);
-#elif defined(TCL_THREADS) && defined(USE_THREAD_ALLOC) 
-    TclThreadFreeObj(objPtr); 
-#else 
-    Tcl_MutexLock(&tclObjMutex);
-    objPtr->internalRep.otherValuePtr = (VOID *) tclFreeObjList;
-    tclFreeObjList = objPtr;
-    Tcl_MutexUnlock(&tclObjMutex);
-#endif /* TCL_MEM_DEBUG */
+    {
+	ThreadSpecificData* tsdPtr = TCL_TSD_INIT(&dataKey);
+	if (tsdPtr->lineCLPtr) {
+	    Tcl_HashEntry* hPtr = Tcl_FindHashEntry (tsdPtr->lineCLPtr, (char *) objPtr);
+	    if (hPtr) {
+		Tcl_EventuallyFree (Tcl_GetHashValue (hPtr), ContLineLocFree);
+		Tcl_DeleteHashEntry (hPtr);
+	    }
+	}
+    }
+}
+#else /* TCL_MEM_DEBUG */
+
+void
+TclFreeObj(
+    register Tcl_Obj *objPtr)	/* The object to be freed. */
+{
+    /* Invalidate the string rep first so we can use the bytes value 
+     * for our pointer chain, and signal an obj deletion (as opposed
+     * to shimmering) with 'length == -1' */ 
+
+    TclInvalidateStringRep(objPtr);
+    objPtr->length = -1;
+    
+    if (!objPtr->typePtr || !objPtr->typePtr->freeIntRepProc) {
+	/*
+	 * objPtr can be freed safely, as it will not attempt to free any
+	 * other objects: it will not cause recursive calls to this function.
+	 */
+
+	TCL_DTRACE_OBJ_FREE(objPtr);
+	TclFreeObjStorage(objPtr);
+	TclIncrObjsFreed();
+    } else {
+	/*
+	 * This macro declares a variable, so must come here...
+	 */
+
+	ObjInitDeletionContext(context);
+
+	if (ObjDeletePending(context)) {
+	    PushObjToDelete(context, objPtr);
+	} else {
+	    /*
+	     * Note that the contents of the while loop assume that the string
+	     * rep has already been freed and we don't want to do anything
+	     * fancy with adding to the queue inside ourselves. Must take care
+	     * to unstack the object first since freeing the internal rep can
+	     * add further objects to the stack. The code assumes that it is
+	     * the first thing in a block; all current usages in the core
+	     * satisfy this.
+	     */
+
+	    TCL_DTRACE_OBJ_FREE(objPtr);
+	    ObjDeletionLock(context);
+	    objPtr->typePtr->freeIntRepProc(objPtr);
+	    ObjDeletionUnlock(context);
+
+	    TclFreeObjStorage(objPtr);
+	    TclIncrObjsFreed();
+	    ObjDeletionLock(context);
+	    while (ObjOnStack(context)) {
+		Tcl_Obj *objToFree;
+		PopObjToDelete(context,objToFree);
+		TCL_DTRACE_OBJ_FREE(objToFree);
+		if ((objToFree->typePtr != NULL)
+			&& (objToFree->typePtr->freeIntRepProc != NULL)) {
+		    objToFree->typePtr->freeIntRepProc(objToFree);
+		}
+		TclFreeObjStorage(objToFree);
+		TclIncrObjsFreed();
+	    }
+	    ObjDeletionUnlock(context);
+	}
+    }
 
-#ifdef TCL_TIP280
     /*
      * We cannot use TclGetContinuationTable() here, because that may
      * re-initialize the thread-data for calls coming after the
@@ -1076,9 +1471,34 @@ TclFreeObj(objPtr)
 	    }
 	}
     }
+}
 #endif
-    TclIncrObjsFreed();
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclObjBeingDeleted --
+ *
+ *	This function returns 1 when the Tcl_Obj is being deleted. It is
+ *	provided for the rare cases where the reason for the loss of an
+ *	internal rep might be relevant. [FR 1512138]
+ *
+ * Results:
+ *	1 if being deleted, 0 otherwise.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclObjBeingDeleted(
+    Tcl_Obj *objPtr)
+{
+    return (objPtr->length == -1);
 }
+
 
 /*
  *----------------------------------------------------------------------
@@ -1089,29 +1509,29 @@ TclFreeObj(objPtr)
  *	object.
  *
  * Results:
- *	The return value is a pointer to a newly created Tcl_Obj. This
- *	object has reference count 0 and the same type, if any, as the
- *	source object objPtr. Also:
+ *	The return value is a pointer to a newly created Tcl_Obj. This object
+ *	has reference count 0 and the same type, if any, as the source object
+ *	objPtr. Also:
  *	  1) If the source object has a valid string rep, we copy it;
- *	     otherwise, the duplicate's string rep is set NULL to mark
- *	     it invalid.
+ *	     otherwise, the duplicate's string rep is set NULL to mark it
+ *	     invalid.
  *	  2) If the source object has an internal representation (i.e. its
- *	     typePtr is non-NULL), the new object's internal rep is set to
- *	     a copy; otherwise the new internal rep is marked invalid.
+ *	     typePtr is non-NULL), the new object's internal rep is set to a
+ *	     copy; otherwise the new internal rep is marked invalid.
  *
  * Side effects:
- *      What constitutes "copying" the internal representation depends on
- *	the type. For example, if the argument object is a list,
- *	the element objects it points to will not actually be copied but
- *	will be shared with the duplicate list. That is, the ref counts of
- *	the element objects will be incremented.
+ *	What constitutes "copying" the internal representation depends on the
+ *	type. For example, if the argument object is a list, the element
+ *	objects it points to will not actually be copied but will be shared
+ *	with the duplicate list. That is, the ref counts of the element
+ *	objects will be incremented.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_DuplicateObj(objPtr)
-    register Tcl_Obj *objPtr;		/* The object to duplicate. */
+Tcl_DuplicateObj(
+    register Tcl_Obj *objPtr)		/* The object to duplicate. */
 {
     register Tcl_ObjType *typePtr = objPtr->typePtr;
     register Tcl_Obj *dupPtr;
@@ -1123,7 +1543,7 @@ Tcl_DuplicateObj(objPtr)
     } else if (objPtr->bytes != tclEmptyStringRep) {
 	TclInitStringRep(dupPtr, objPtr->bytes, objPtr->length);
     }
-    
+
     if (typePtr != NULL) {
 	if (typePtr->dupIntRepProc == NULL) {
 	    dupPtr->internalRep = objPtr->internalRep;
@@ -1157,16 +1577,16 @@ Tcl_DuplicateObj(objPtr)
  */
 
 char *
-Tcl_GetString(objPtr)
-    register Tcl_Obj *objPtr;	/* Object whose string rep byte pointer
-				 * should be returned. */
+Tcl_GetString(
+    register Tcl_Obj *objPtr)	/* Object whose string rep byte pointer should
+				 * be returned. */
 {
     if (objPtr->bytes != NULL) {
 	return objPtr->bytes;
     }
 
     if (objPtr->typePtr->updateStringProc == NULL) {
-	panic("UpdateStringProc should not be invoked for type %s",
+	Tcl_Panic("UpdateStringProc should not be invoked for type %s",
 		objPtr->typePtr->name);
     }
     (*objPtr->typePtr->updateStringProc)(objPtr);
@@ -1178,16 +1598,16 @@ Tcl_GetString(objPtr)
  *
  * Tcl_GetStringFromObj --
  *
- *	Returns the string representation's byte array pointer and length
- *	for an object.
+ *	Returns the string representation's byte array pointer and length for
+ *	an object.
  *
  * Results:
- *	Returns a pointer to the string representation of objPtr. If
- *	lengthPtr isn't NULL, the length of the string representation is
- *	stored at *lengthPtr. The byte array referenced by the returned
- *	pointer must not be modified by the caller. Furthermore, the
- *	caller must copy the bytes if they need to retain them since the
- *	object's string rep can change as a result of other operations.
+ *	Returns a pointer to the string representation of objPtr. If lengthPtr
+ *	isn't NULL, the length of the string representation is stored at
+ *	*lengthPtr. The byte array referenced by the returned pointer must not
+ *	be modified by the caller. Furthermore, the caller must copy the bytes
+ *	if they need to retain them since the object's string rep can change
+ *	as a result of other operations.
  *
  * Side effects:
  *	May call the object's updateStringProc to update the string
@@ -1197,16 +1617,16 @@ Tcl_GetString(objPtr)
  */
 
 char *
-Tcl_GetStringFromObj(objPtr, lengthPtr)
-    register Tcl_Obj *objPtr;	/* Object whose string rep byte pointer should
+Tcl_GetStringFromObj(
+    register Tcl_Obj *objPtr,	/* Object whose string rep byte pointer should
 				 * be returned. */
-    register int *lengthPtr;	/* If non-NULL, the location where the string
+    register int *lengthPtr)	/* If non-NULL, the location where the string
 				 * rep's byte array length should * be stored.
 				 * If NULL, no length is stored. */
 {
     if (objPtr->bytes == NULL) {
 	if (objPtr->typePtr->updateStringProc == NULL) {
-	    panic("UpdateStringProc should not be invoked for type %s",
+	    Tcl_Panic("UpdateStringProc should not be invoked for type %s",
 		    objPtr->typePtr->name);
 	}
 	(*objPtr->typePtr->updateStringProc)(objPtr);
@@ -1223,48 +1643,44 @@ Tcl_GetStringFromObj(objPtr, lengthPtr)
  *
  * Tcl_InvalidateStringRep --
  *
- *	This procedure is called to invalidate an object's string
- *	representation. 
+ *	This function is called to invalidate an object's string
+ *	representation.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Deallocates the storage for any old string representation, then
- *	sets the string representation NULL to mark it invalid.
+ *	Deallocates the storage for any old string representation, then sets
+ *	the string representation NULL to mark it invalid.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_InvalidateStringRep(objPtr)
-     register Tcl_Obj *objPtr;	/* Object whose string rep byte pointer
-				 * should be freed. */
+Tcl_InvalidateStringRep(
+    register Tcl_Obj *objPtr)	/* Object whose string rep byte pointer should
+				 * be freed. */
 {
-    if (objPtr->bytes != NULL) {
-	if (objPtr->bytes != tclEmptyStringRep) {
-	    ckfree((char *) objPtr->bytes);
-	}
-	objPtr->bytes = NULL;
-    }
+    TclInvalidateStringRep(objPtr);
 }
+
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_NewBooleanObj --
  *
- *	This procedure is normally called when not debugging: i.e., when
+ *	This function is normally called when not debugging: i.e., when
  *	TCL_MEM_DEBUG is not defined. It creates a new Tcl_Obj and
- *	initializes it from the argument boolean value. A nonzero
- *	"boolValue" is coerced to 1.
+ *	initializes it from the argument boolean value. A nonzero "boolValue"
+ *	is coerced to 1.
  *
- *	When TCL_MEM_DEBUG is defined, this procedure just returns the
- *	result of calling the debugging version Tcl_DbNewBooleanObj.
+ *	When TCL_MEM_DEBUG is defined, this function just returns the result
+ *	of calling the debugging version Tcl_DbNewBooleanObj.
  *
  * Results:
- *	The newly created object is returned. This object will have an
- *	invalid string representation. The returned object has ref count 0.
+ *	The newly created object is returned. This object will have an invalid
+ *	string representation. The returned object has ref count 0.
  *
  * Side effects:
  *	None.
@@ -1276,8 +1692,8 @@ Tcl_InvalidateStringRep(objPtr)
 #undef Tcl_NewBooleanObj
 
 Tcl_Obj *
-Tcl_NewBooleanObj(boolValue)
-    register int boolValue;	/* Boolean used to initialize new object. */
+Tcl_NewBooleanObj(
+    register int boolValue)	/* Boolean used to initialize new object. */
 {
     return Tcl_DbNewBooleanObj(boolValue, "unknown", 0);
 }
@@ -1285,16 +1701,12 @@ Tcl_NewBooleanObj(boolValue)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewBooleanObj(boolValue)
-    register int boolValue;	/* Boolean used to initialize new object. */
+Tcl_NewBooleanObj(
+    register int boolValue)	/* Boolean used to initialize new object. */
 {
     register Tcl_Obj *objPtr;
 
-    TclNewObj(objPtr);
-    objPtr->bytes = NULL;
-    
-    objPtr->internalRep.longValue = (boolValue? 1 : 0);
-    objPtr->typePtr = &tclBooleanType;
+    TclNewBooleanObj(objPtr, boolValue);
     return objPtr;
 }
 #endif /* TCL_MEM_DEBUG */
@@ -1304,20 +1716,20 @@ Tcl_NewBooleanObj(boolValue)
  *
  * Tcl_DbNewBooleanObj --
  *
- *	This procedure is normally called when debugging: i.e., when
+ *	This function is normally called when debugging: i.e., when
  *	TCL_MEM_DEBUG is defined. It creates new boolean objects. It is the
- *	same as the Tcl_NewBooleanObj procedure above except that it calls
+ *	same as the Tcl_NewBooleanObj function above except that it calls
  *	Tcl_DbCkalloc directly with the file name and line number from its
  *	caller. This simplifies debugging since then the [memory active]
- *	command	will report the correct file name and line number when
+ *	command will report the correct file name and line number when
  *	reporting objects that haven't been freed.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just returns the
+ *	When TCL_MEM_DEBUG is not defined, this function just returns the
  *	result of calling Tcl_NewBooleanObj.
  *
  * Results:
- *	The newly created object is returned. This object will have an
- *	invalid string representation. The returned object has ref count 0.
+ *	The newly created object is returned. This object will have an invalid
+ *	string representation. The returned object has ref count 0.
  *
  * Side effects:
  *	None.
@@ -1328,32 +1740,32 @@ Tcl_NewBooleanObj(boolValue)
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewBooleanObj(boolValue, file, line)
-    register int boolValue;	/* Boolean used to initialize new object. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewBooleanObj(
+    register int boolValue,	/* Boolean used to initialize new object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     register Tcl_Obj *objPtr;
 
     TclDbNewObj(objPtr, file, line);
     objPtr->bytes = NULL;
-    
+
     objPtr->internalRep.longValue = (boolValue? 1 : 0);
-    objPtr->typePtr = &tclBooleanType;
+    objPtr->typePtr = &tclIntType;
     return objPtr;
 }
 
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewBooleanObj(boolValue, file, line)
-    register int boolValue;	/* Boolean used to initialize new object. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewBooleanObj(
+    register int boolValue,	/* Boolean used to initialize new object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewBooleanObj(boolValue);
 }
@@ -1371,30 +1783,22 @@ Tcl_DbNewBooleanObj(boolValue, file, line)
  *	None.
  *
  * Side effects:
- *	The object's old string rep, if any, is freed. Also, any old
- *	internal rep is freed.
+ *	The object's old string rep, if any, is freed. Also, any old internal
+ *	rep is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetBooleanObj(objPtr, boolValue)
-    register Tcl_Obj *objPtr;	/* Object whose internal rep to init. */
-    register int boolValue;	/* Boolean used to set object's value. */
+Tcl_SetBooleanObj(
+    register Tcl_Obj *objPtr,	/* Object whose internal rep to init. */
+    register int boolValue)	/* Boolean used to set object's value. */
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetBooleanObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetBooleanObj");
     }
-    
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-    
-    objPtr->internalRep.longValue = (boolValue? 1 : 0);
-    objPtr->typePtr = &tclBooleanType;
-    Tcl_InvalidateStringRep(objPtr);
+
+    TclSetBooleanObj(objPtr, boolValue);
 }
 
 /*
@@ -1402,9 +1806,8 @@ Tcl_SetBooleanObj(objPtr, boolValue)
  *
  * Tcl_GetBooleanFromObj --
  *
- *	Attempt to return a boolean from the Tcl object "objPtr". If the
- *	object is not already a boolean, an attempt will be made to convert
- *	it to one.
+ *	Attempt to return a boolean from the Tcl object "objPtr". This
+ *	includes conversion from any of Tcl's numeric types.
  *
  * Results:
  *	The return value is a standard Tcl object result. If an error occurs
@@ -1412,30 +1815,56 @@ Tcl_SetBooleanObj(objPtr, boolValue)
  *	result unless "interp" is NULL.
  *
  * Side effects:
- *	If the object is not already a boolean, the conversion will free
- *	any old internal representation. 
+ *	The intrep of *objPtr may be changed.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetBooleanFromObj(interp, objPtr, boolPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object from which to get boolean. */
-    register int *boolPtr;	/* Place to store resulting boolean. */
+Tcl_GetBooleanFromObj(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr,	/* The object from which to get boolean. */
+    register int *boolPtr)	/* Place to store resulting boolean. */
 {
-    register int result;
+    do {
+	if (objPtr->typePtr == &tclIntType) {
+	    *boolPtr = (objPtr->internalRep.longValue != 0);
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclBooleanType) {
+	    *boolPtr = (int) objPtr->internalRep.longValue;
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclDoubleType) {
+	    /*
+	     * Caution: Don't be tempted to check directly for the "double"
+	     * Tcl_ObjType and then compare the intrep to 0.0. This isn't
+	     * reliable because a "double" Tcl_ObjType can hold the NaN value.
+	     * Use the API Tcl_GetDoubleFromObj, which does the checking and
+	     * sets the proper error message for us.
+	     */
 
-    if (objPtr->typePtr == &tclBooleanType) {
-	result = TCL_OK;
-    } else {
-	result = SetBooleanFromAny(interp, objPtr);
-    }
+            double d;
 
-    if (result == TCL_OK) {
-	*boolPtr = (int) objPtr->internalRep.longValue;
-    }
-    return result;
+	    if (Tcl_GetDoubleFromObj(interp, objPtr, &d) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    *boolPtr = (d != 0.0);
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclBignumType) {
+	    *boolPtr = 1;
+	    return TCL_OK;
+	}
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    *boolPtr = (objPtr->internalRep.wideValue != 0);
+	    return TCL_OK;
+	}
+#endif
+    } while ((ParseBoolean(objPtr) == TCL_OK) || (TCL_OK ==
+	    TclParseNumber(interp, objPtr, "boolean value", NULL,-1,NULL,0)));
+    return TCL_ERROR;
 }
 
 /*
@@ -1452,218 +1881,174 @@ Tcl_GetBooleanFromObj(interp, objPtr, boolPtr)
  *	unless "interp" is NULL.
  *
  * Side effects:
- *	If no error occurs, an integer 1 or 0 is stored as "objPtr"s
- *	internal representation and the type of "objPtr" is set to boolean.
+ *	If no error occurs, an integer 1 or 0 is stored as "objPtr"s internal
+ *	representation and the type of "objPtr" is set to boolean.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetBooleanFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
-{
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    char *string, *end;
-    register char c;
-    char lowerCase[10];
-    int newBool, length;
-    register int i;
-
+SetBooleanFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
+{
     /*
-     * Get the string representation. Make it up-to-date if necessary.
+     * For some "pure" numeric Tcl_ObjTypes (no string rep), we can determine
+     * whether a boolean conversion is possible without generating the string
+     * rep.
      */
-    
-    string = Tcl_GetStringFromObj(objPtr, &length);
+
+    if (objPtr->bytes == NULL) {
+	if (objPtr->typePtr == &tclIntType) {
+	    switch (objPtr->internalRep.longValue) {
+	    case 0L: case 1L:
+		return TCL_OK;
+	    }
+	    goto badBoolean;
+	}
+
+	if (objPtr->typePtr == &tclBignumType) {
+	    goto badBoolean;
+	}
+
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    goto badBoolean;
+	}
+#endif
+
+	if (objPtr->typePtr == &tclDoubleType) {
+	    goto badBoolean;
+	}
+    }
+
+    if (ParseBoolean(objPtr) == TCL_OK) {
+	return TCL_OK;
+    }
+
+  badBoolean:
+    if (interp != NULL) {
+	int length;
+	char *str = Tcl_GetStringFromObj(objPtr, &length);
+	Tcl_Obj *msg;
+
+	TclNewLiteralStringObj(msg, "expected boolean value but got \"");
+	Tcl_AppendLimitedToObj(msg, str, length, 50, "");
+	Tcl_AppendToObj(msg, "\"", -1);
+	Tcl_SetObjResult(interp, msg);
+    }
+    return TCL_ERROR;
+}
+
+static int
+ParseBoolean(
+    register Tcl_Obj *objPtr)	/* The object to parse/convert. */
+{
+    int i, length, newBool;
+    char lowerCase[6], *str = TclGetStringFromObj(objPtr, &length);
+
+    if ((length == 0) || (length > 5)) {
+	/* longest valid boolean string rep. is "false" */
+	return TCL_ERROR;
+    }
+
+    switch (str[0]) {
+    case '0':
+	if (length == 1) {
+	    newBool = 0;
+	    goto numericBoolean;
+	}
+	return TCL_ERROR;
+    case '1':
+	if (length == 1) {
+	    newBool = 1;
+	    goto numericBoolean;
+	}
+	return TCL_ERROR;
+    }
 
     /*
-     * Use the obvious shortcuts for numerical values; if objPtr is not
-     * of numerical type, parse its string rep.
+     * Force to lower case for case-insensitive detection. Filter out known
+     * invalid characters at the same time.
      */
-	
-    if (objPtr->typePtr == &tclIntType) {
-	newBool = (objPtr->internalRep.longValue != 0);
-    } else if (objPtr->typePtr == &tclDoubleType) {
-	newBool = (objPtr->internalRep.doubleValue != 0.0);
-    } else if (objPtr->typePtr == &tclWideIntType) {
-	newBool = (objPtr->internalRep.wideValue != 0);
-    } else {
-	/*
-	 * Copy the string converting its characters to lower case.
-	 */
-	
-	for (i = 0;  (i < 9) && (i < length);  i++) {
-	    c = string[i];
-	    /*
-	     * Weed out international characters so we can safely operate
-	     * on single bytes.
-	     */
-	    
-	    if (c & 0x80) {
-		goto badBoolean;
-	    }
-	    if (Tcl_UniCharIsUpper(UCHAR(c))) {
-		c = (char) Tcl_UniCharToLower(UCHAR(c));
-	    }
+
+    for (i=0; i < length; i++) {
+	char c = str[i];
+	switch (c) {
+	case 'A': case 'E': case 'F': case 'L': case 'N':
+	case 'O': case 'R': case 'S': case 'T': case 'U': case 'Y':
+	    lowerCase[i] = c + (char) ('a' - 'A');
+	    break;
+	case 'a': case 'e': case 'f': case 'l': case 'n':
+	case 'o': case 'r': case 's': case 't': case 'u': case 'y':
 	    lowerCase[i] = c;
+	    break;
+	default:
+	    return TCL_ERROR;
 	}
-	lowerCase[i] = 0;
-	
+    }
+    lowerCase[length] = 0;
+    switch (lowerCase[0]) {
+    case 'y':
 	/*
-	 * Parse the string as a boolean. We use an implementation here that
-	 * doesn't report errors in interp if interp is NULL.
+	 * Checking the 'y' is redundant, but makes the code clearer.
 	 */
-	
-	c = lowerCase[0];
-	if ((c == '0') && (lowerCase[1] == '\0')) {
-	    newBool = 0;
-	} else if ((c == '1') && (lowerCase[1] == '\0')) {
+	if (strncmp(lowerCase, "yes", (size_t) length) == 0) {
 	    newBool = 1;
-	} else if ((c == 'y') && (strncmp(lowerCase, "yes", (size_t) length) == 0)) {
+	    goto goodBoolean;
+	}
+	return TCL_ERROR;
+    case 'n':
+	if (strncmp(lowerCase, "no", (size_t) length) == 0) {
+	    newBool = 0;
+	    goto goodBoolean;
+	}
+	return TCL_ERROR;
+    case 't':
+	if (strncmp(lowerCase, "true", (size_t) length) == 0) {
 	    newBool = 1;
-	} else if ((c == 'n') && (strncmp(lowerCase, "no", (size_t) length) == 0)) {
+	    goto goodBoolean;
+	}
+	return TCL_ERROR;
+    case 'f':
+	if (strncmp(lowerCase, "false", (size_t) length) == 0) {
 	    newBool = 0;
-	} else if ((c == 't') && (strncmp(lowerCase, "true", (size_t) length) == 0)) {
+	    goto goodBoolean;
+	}
+	return TCL_ERROR;
+    case 'o':
+	if (length < 2) {
+	    return TCL_ERROR;
+	}
+	if (strncmp(lowerCase, "on", (size_t) length) == 0) {
 	    newBool = 1;
-	} else if ((c == 'f') && (strncmp(lowerCase, "false", (size_t) length) == 0)) {
+	    goto goodBoolean;
+	} else if (strncmp(lowerCase, "off", (size_t) length) == 0) {
 	    newBool = 0;
-	} else if ((c == 'o') && (length >= 2)) {
-	    if (strncmp(lowerCase, "on", (size_t) length) == 0) {
-		newBool = 1;
-	    } else if (strncmp(lowerCase, "off", (size_t) length) == 0) {
-		newBool = 0;
-	    } else {
-		goto badBoolean;
-	    }
-	} else {
-	    double dbl;
-	    /*
-	     * Boolean values can be extracted from ints or doubles.  Note
-	     * that we don't use strtoul or strtoull here because we don't
-	     * care about what the value is, just whether it is equal to
-	     * zero or not.
-	     */
-#ifdef TCL_WIDE_INT_IS_LONG
-	    newBool = strtol(string, &end, 0);
-	    if (end != string) {
-		/*
-		 * Make sure the string has no garbage after the end of
-		 * the int.
-		 */
-		while ((end < (string+length))
-		       && isspace(UCHAR(*end))) { /* INTL: ISO only */
-		    end++;
-		}
-		if (end == (string+length)) {
-		    newBool = (newBool != 0);
-		    goto goodBoolean;
-		}
-	    }
-#else /* !TCL_WIDE_INT_IS_LONG */
-	    Tcl_WideInt wide = strtoll(string, &end, 0);
-	    if (end != string) {
-		/*
-		 * Make sure the string has no garbage after the end of
-		 * the wide int.
-		 */
-		while ((end < (string+length))
-		       && isspace(UCHAR(*end))) { /* INTL: ISO only */
-		    end++;
-		}
-		if (end == (string+length)) {
-		    newBool = (wide != Tcl_LongAsWide(0));
-		    goto goodBoolean;
-		}
-	    }
-#endif /* TCL_WIDE_INT_IS_LONG */
-	    /*
-	     * Still might be a string containing the characters representing an
-	     * int or double that wasn't handled above. This would be a string
-	     * like "27" or "1.0" that is non-zero and not "1". Such a string
-	     * would result in the boolean value true. We try converting to
-	     * double. If that succeeds and the resulting double is non-zero, we
-	     * have a "true". Note that numbers can't have embedded NULLs.
-	     */
-	    
-	    dbl = strtod(string, &end);
-	    if (end == string) {
-		goto badBoolean;
-	    }
-	    
-	    /*
-	     * Make sure the string has no garbage after the end of the double.
-	     */
-	    
-	    while ((end < (string+length))
-		   && isspace(UCHAR(*end))) { /* INTL: ISO only */
-		end++;
-	    }
-	    if (end != (string+length)) {
-		goto badBoolean;
-	    }
-	    newBool = (dbl != 0.0);
+	    goto goodBoolean;
 	}
+	return TCL_ERROR;
+    default:
+	return TCL_ERROR;
     }
 
     /*
-     * Free the old internalRep before setting the new one. We do this as
-     * late as possible to allow the conversion code, in particular
+     * Free the old internalRep before setting the new one. We do this as late
+     * as possible to allow the conversion code, in particular
      * Tcl_GetStringFromObj, to use that old internalRep.
      */
 
-    goodBoolean:
-    if ((oldTypePtr != NULL) &&	(oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-
+  goodBoolean:
+    TclFreeIntRep(objPtr);
     objPtr->internalRep.longValue = newBool;
     objPtr->typePtr = &tclBooleanType;
     return TCL_OK;
 
-    badBoolean:
-    if (interp != NULL) {
-	/*
-	 * Must copy string before resetting the result in case a caller
-	 * is trying to convert the interpreter's result to a boolean.
-	 */
-	
-	char buf[100];
-	sprintf(buf, "expected boolean value but got \"%.50s\"", string);
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1);
-    }
-    return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * UpdateStringOfBoolean --
- *
- *	Update the string representation for a boolean object.
- *	Note: This procedure does not free an existing old string rep
- *	so storage will be lost if this has not already been done. 
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	The object's string is set to a valid string that results from
- *	the boolean-to-string conversion.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-UpdateStringOfBoolean(objPtr)
-    register Tcl_Obj *objPtr;	/* Int object whose string rep to update. */
-{
-    char *s = ckalloc((unsigned) 2);
-    
-    s[0] = (char) (objPtr->internalRep.longValue? '1' : '0');
-    s[1] = '\0';
-    objPtr->bytes = s;
-    objPtr->length = 1;
+  numericBoolean:
+    TclFreeIntRep(objPtr);
+    objPtr->internalRep.longValue = newBool;
+    objPtr->typePtr = &tclIntType;
+    return TCL_OK;
 }
 
 /*
@@ -1671,12 +2056,12 @@ UpdateStringOfBoolean(objPtr)
  *
  * Tcl_NewDoubleObj --
  *
- *	This procedure is normally called when not debugging: i.e., when
+ *	This function is normally called when not debugging: i.e., when
  *	TCL_MEM_DEBUG is not defined. It creates a new double object and
  *	initializes it from the argument double value.
  *
- *	When TCL_MEM_DEBUG is defined, this procedure just returns the
- *	result of calling the debugging version Tcl_DbNewDoubleObj.
+ *	When TCL_MEM_DEBUG is defined, this function just returns the result
+ *	of calling the debugging version Tcl_DbNewDoubleObj.
  *
  * Results:
  *	The newly created object is returned. This object will have an
@@ -1692,8 +2077,8 @@ UpdateStringOfBoolean(objPtr)
 #undef Tcl_NewDoubleObj
 
 Tcl_Obj *
-Tcl_NewDoubleObj(dblValue)
-    register double dblValue;	/* Double used to initialize the object. */
+Tcl_NewDoubleObj(
+    register double dblValue)	/* Double used to initialize the object. */
 {
     return Tcl_DbNewDoubleObj(dblValue, "unknown", 0);
 }
@@ -1701,16 +2086,12 @@ Tcl_NewDoubleObj(dblValue)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewDoubleObj(dblValue)
-    register double dblValue;	/* Double used to initialize the object. */
+Tcl_NewDoubleObj(
+    register double dblValue)	/* Double used to initialize the object. */
 {
     register Tcl_Obj *objPtr;
 
-    TclNewObj(objPtr);
-    objPtr->bytes = NULL;
-    
-    objPtr->internalRep.doubleValue = dblValue;
-    objPtr->typePtr = &tclDoubleType;
+    TclNewDoubleObj(objPtr, dblValue);
     return objPtr;
 }
 #endif /* if TCL_MEM_DEBUG */
@@ -1720,20 +2101,20 @@ Tcl_NewDoubleObj(dblValue)
  *
  * Tcl_DbNewDoubleObj --
  *
- *	This procedure is normally called when debugging: i.e., when
+ *	This function is normally called when debugging: i.e., when
  *	TCL_MEM_DEBUG is defined. It creates new double objects. It is the
- *	same as the Tcl_NewDoubleObj procedure above except that it calls
+ *	same as the Tcl_NewDoubleObj function above except that it calls
  *	Tcl_DbCkalloc directly with the file name and line number from its
  *	caller. This simplifies debugging since then the [memory active]
- *	command	will report the correct file name and line number when
+ *	command will report the correct file name and line number when
  *	reporting objects that haven't been freed.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just returns the
+ *	When TCL_MEM_DEBUG is not defined, this function just returns the
  *	result of calling Tcl_NewDoubleObj.
  *
  * Results:
- *	The newly created object is returned. This object will have an
- *	invalid string representation. The returned object has ref count 0.
+ *	The newly created object is returned. This object will have an invalid
+ *	string representation. The returned object has ref count 0.
  *
  * Side effects:
  *	None.
@@ -1744,18 +2125,18 @@ Tcl_NewDoubleObj(dblValue)
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewDoubleObj(dblValue, file, line)
-    register double dblValue;	/* Double used to initialize the object. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewDoubleObj(
+    register double dblValue,	/* Double used to initialize the object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     register Tcl_Obj *objPtr;
 
     TclDbNewObj(objPtr, file, line);
     objPtr->bytes = NULL;
-    
+
     objPtr->internalRep.doubleValue = dblValue;
     objPtr->typePtr = &tclDoubleType;
     return objPtr;
@@ -1764,12 +2145,12 @@ Tcl_DbNewDoubleObj(dblValue, file, line)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewDoubleObj(dblValue, file, line)
-    register double dblValue;	/* Double used to initialize the object. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewDoubleObj(
+    register double dblValue,	/* Double used to initialize the object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewDoubleObj(dblValue);
 }
@@ -1787,30 +2168,22 @@ Tcl_DbNewDoubleObj(dblValue, file, line)
  *	None.
  *
  * Side effects:
- *	The object's old string rep, if any, is freed. Also, any old
- *	internal rep is freed.
+ *	The object's old string rep, if any, is freed. Also, any old internal
+ *	rep is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetDoubleObj(objPtr, dblValue)
-    register Tcl_Obj *objPtr;	/* Object whose internal rep to init. */
-    register double dblValue;	/* Double used to set the object's value. */
+Tcl_SetDoubleObj(
+    register Tcl_Obj *objPtr,	/* Object whose internal rep to init. */
+    register double dblValue)	/* Double used to set the object's value. */
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetDoubleObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetDoubleObj");
     }
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-    
-    objPtr->internalRep.doubleValue = dblValue;
-    objPtr->typePtr = &tclDoubleType;
-    Tcl_InvalidateStringRep(objPtr);
+    TclSetDoubleObj(objPtr, dblValue);
 }
 
 /*
@@ -1818,9 +2191,8 @@ Tcl_SetDoubleObj(objPtr, dblValue)
  *
  * Tcl_GetDoubleFromObj --
  *
- *	Attempt to return a double from the Tcl object "objPtr". If the
- *	object is not already a double, an attempt will be made to convert
- *	it to one.
+ *	Attempt to return a double from the Tcl object "objPtr". If the object
+ *	is not already a double, an attempt will be made to convert it to one.
  *
  * Results:
  *	The return value is a standard Tcl object result. If an error occurs
@@ -1828,30 +2200,48 @@ Tcl_SetDoubleObj(objPtr, dblValue)
  *	result unless "interp" is NULL.
  *
  * Side effects:
- *	If the object is not already a double, the conversion will free
- *	any old internal representation.
+ *	If the object is not already a double, the conversion will free any
+ *	old internal representation.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetDoubleFromObj(interp, objPtr, dblPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object from which to get a double. */
-    register double *dblPtr;	/* Place to store resulting double. */
+Tcl_GetDoubleFromObj(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr,	/* The object from which to get a double. */
+    register double *dblPtr)	/* Place to store resulting double. */
 {
-    register int result;
-    
-    if (objPtr->typePtr == &tclDoubleType) {
-	*dblPtr = objPtr->internalRep.doubleValue;
-	return TCL_OK;
-    }
-
-    result = SetDoubleFromAny(interp, objPtr);
-    if (result == TCL_OK) {
-	*dblPtr = objPtr->internalRep.doubleValue;
-    }
-    return result;
+    do {
+	if (objPtr->typePtr == &tclDoubleType) {
+	    if (TclIsNaN(objPtr->internalRep.doubleValue)) {
+		if (interp != NULL) {
+		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
+			    "floating point value is Not a Number", -1));
+		}
+		return TCL_ERROR;
+	    }
+	    *dblPtr = (double) objPtr->internalRep.doubleValue;
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclIntType) {
+	    *dblPtr = objPtr->internalRep.longValue;
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclBignumType) {
+	    mp_int big;
+	    UNPACK_BIGNUM( objPtr, big );
+	    *dblPtr = TclBignumToDouble( &big );
+	    return TCL_OK;
+	}
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    *dblPtr = (double) objPtr->internalRep.wideValue;
+	    return TCL_OK;
+	}
+#endif
+    } while (SetDoubleFromAny(interp, objPtr) == TCL_OK);
+    return TCL_ERROR;
 }
 
 /*
@@ -1875,78 +2265,12 @@ Tcl_GetDoubleFromObj(interp, objPtr, dblPtr)
  */
 
 static int
-SetDoubleFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
+SetDoubleFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
 {
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    char *string, *end;
-    double newDouble;
-    int length;
-
-    /*
-     * Get the string representation. Make it up-to-date if necessary.
-     */
-
-    string = Tcl_GetStringFromObj(objPtr, &length);
-
-    /*
-     * Now parse "objPtr"s string as an double. Numbers can't have embedded
-     * NULLs. We use an implementation here that doesn't report errors in
-     * interp if interp is NULL.
-     */
-
-    errno = 0;
-    newDouble = strtod(string, &end);
-    if (end == string) {
-	badDouble:
-	if (interp != NULL) {
-	    /*
-	     * Must copy string before resetting the result in case a caller
-	     * is trying to convert the interpreter's result to an int.
-	     */
-	    
-	    char buf[100];
-	    sprintf(buf, "expected floating-point number but got \"%.50s\"",
-	            string);
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1);
-	}
-	return TCL_ERROR;
-    }
-    if (errno != 0) {
-	if (interp != NULL) {
-	    TclExprFloatError(interp, newDouble);
-	}
-	return TCL_ERROR;
-    }
-
-    /*
-     * Make sure that the string has no garbage after the end of the double.
-     */
-    
-    while ((end < (string+length))
-	    && isspace(UCHAR(*end))) { /* INTL: ISO space. */
-	end++;
-    }
-    if (end != (string+length)) {
-	goto badDouble;
-    }
-    
-    /*
-     * The conversion to double succeeded. Free the old internalRep before
-     * setting the new one. We do this as late as possible to allow the
-     * conversion code, in particular Tcl_GetStringFromObj, to use that old
-     * internalRep.
-     */
-    
-    if ((oldTypePtr != NULL) &&	(oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-
-    objPtr->internalRep.doubleValue = newDouble;
-    objPtr->typePtr = &tclDoubleType;
-    return TCL_OK;
+    return TclParseNumber(interp, objPtr, "floating-point number", NULL, -1,
+	    NULL, 0);
 }
 
 /*
@@ -1954,9 +2278,9 @@ SetDoubleFromAny(interp, objPtr)
  *
  * UpdateStringOfDouble --
  *
- *	Update the string representation for a double-precision floating
- *	point object. This must obey the current tcl_precision value for
- *	double-to-string conversions. Note: This procedure does not free an
+ *	Update the string representation for a double-precision floating point
+ *	object. This must obey the current tcl_precision value for
+ *	double-to-string conversions. Note: This function does not free an
  *	existing old string rep so storage will be lost if this has not
  *	already been done.
  *
@@ -1964,23 +2288,22 @@ SetDoubleFromAny(interp, objPtr)
  *	None.
  *
  * Side effects:
- *	The object's string is set to a valid string that results from
- *	the double-to-string conversion.
+ *	The object's string is set to a valid string that results from the
+ *	double-to-string conversion.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfDouble(objPtr)
-    register Tcl_Obj *objPtr;	/* Double obj with string rep to update. */
+UpdateStringOfDouble(
+    register Tcl_Obj *objPtr)	/* Double obj with string rep to update. */
 {
     char buffer[TCL_DOUBLE_SPACE];
     register int len;
-    
-    Tcl_PrintDouble((Tcl_Interp *) NULL, objPtr->internalRep.doubleValue,
-	    buffer);
+
+    Tcl_PrintDouble(NULL, objPtr->internalRep.doubleValue, buffer);
     len = strlen(buffer);
-    
+
     objPtr->bytes = (char *) ckalloc((unsigned) len + 1);
     strcpy(objPtr->bytes, buffer);
     objPtr->length = len;
@@ -1993,22 +2316,22 @@ UpdateStringOfDouble(objPtr)
  *
  *	If a client is compiled with TCL_MEM_DEBUG defined, calls to
  *	Tcl_NewIntObj to create a new integer object end up calling the
- *	debugging procedure Tcl_DbNewLongObj instead.
+ *	debugging function Tcl_DbNewLongObj instead.
  *
  *	Otherwise, if the client is compiled without TCL_MEM_DEBUG defined,
  *	calls to Tcl_NewIntObj result in a call to one of the two
- *	Tcl_NewIntObj implementations below. We provide two implementations
- *	so that the Tcl core can be compiled to do memory debugging of the 
- *	core even if a client does not request it for itself.
+ *	Tcl_NewIntObj implementations below. We provide two implementations so
+ *	that the Tcl core can be compiled to do memory debugging of the core
+ *	even if a client does not request it for itself.
  *
  *	Integer and long integer objects share the same "integer" type
  *	implementation. We store all integers as longs and Tcl_GetIntFromObj
- *	checks whether the current value of the long can be represented by
- *	an int.
+ *	checks whether the current value of the long can be represented by an
+ *	int.
  *
  * Results:
- *	The newly created object is returned. This object will have an
- *	invalid string representation. The returned object has ref count 0.
+ *	The newly created object is returned. This object will have an invalid
+ *	string representation. The returned object has ref count 0.
  *
  * Side effects:
  *	None.
@@ -2020,8 +2343,8 @@ UpdateStringOfDouble(objPtr)
 #undef Tcl_NewIntObj
 
 Tcl_Obj *
-Tcl_NewIntObj(intValue)
-    register int intValue;	/* Int used to initialize the new object. */
+Tcl_NewIntObj(
+    register int intValue)	/* Int used to initialize the new object. */
 {
     return Tcl_DbNewLongObj((long)intValue, "unknown", 0);
 }
@@ -2029,16 +2352,12 @@ Tcl_NewIntObj(intValue)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewIntObj(intValue)
-    register int intValue;	/* Int used to initialize the new object. */
+Tcl_NewIntObj(
+    register int intValue)	/* Int used to initialize the new object. */
 {
     register Tcl_Obj *objPtr;
 
-    TclNewObj(objPtr);
-    objPtr->bytes = NULL;
-    
-    objPtr->internalRep.longValue = (long)intValue;
-    objPtr->typePtr = &tclIntType;
+    TclNewIntObj(objPtr, intValue);
     return objPtr;
 }
 #endif /* if TCL_MEM_DEBUG */
@@ -2055,30 +2374,22 @@ Tcl_NewIntObj(intValue)
  *	None.
  *
  * Side effects:
- *	The object's old string rep, if any, is freed. Also, any old
- *	internal rep is freed. 
+ *	The object's old string rep, if any, is freed. Also, any old internal
+ *	rep is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetIntObj(objPtr, intValue)
-    register Tcl_Obj *objPtr;	/* Object whose internal rep to init. */
-    register int intValue;	/* Integer used to set object's value. */
+Tcl_SetIntObj(
+    register Tcl_Obj *objPtr,	/* Object whose internal rep to init. */
+    register int intValue)	/* Integer used to set object's value. */
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetIntObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetIntObj");
     }
-    
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-    
-    objPtr->internalRep.longValue = (long) intValue;
-    objPtr->typePtr = &tclIntType;
-    Tcl_InvalidateStringRep(objPtr);
+
+    TclSetIntObj(objPtr, intValue);
 }
 
 /*
@@ -2091,67 +2402,48 @@ Tcl_SetIntObj(objPtr, intValue)
  *
  *	Integer and long integer objects share the same "integer" type
  *	implementation. We store all integers as longs and Tcl_GetIntFromObj
- *	checks whether the current value of the long can be represented by
- *	an int.
+ *	checks whether the current value of the long can be represented by an
+ *	int.
  *
  * Results:
  *	The return value is a standard Tcl object result. If an error occurs
- *	during conversion or if the long integer held by the object
- *	can not be represented by an int, an error message is left in
- *	the interpreter's result unless "interp" is NULL.
+ *	during conversion or if the long integer held by the object can not be
+ *	represented by an int, an error message is left in the interpreter's
+ *	result unless "interp" is NULL.
  *
  * Side effects:
- *	If the object is not already an int, the conversion will free
- *	any old internal representation.
+ *	If the object is not already an int, the conversion will free any old
+ *	internal representation.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetIntFromObj(interp, objPtr, intPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object from which to get a int. */
-    register int *intPtr;	/* Place to store resulting int. */
+Tcl_GetIntFromObj(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr,	/* The object from which to get a int. */
+    register int *intPtr)	/* Place to store resulting int. */
 {
-    int result;
-    Tcl_WideInt w = 0;
-
-    /*
-     * If the object isn't already an integer of any width, try to
-     * convert it to one.
-     */
-
-    if (objPtr->typePtr != &tclIntType && objPtr->typePtr != &tclWideIntType) {
-	result = SetIntOrWideFromAny(interp, objPtr);
-	if (result != TCL_OK) {
-	    return result;
-	}
-    }
-
-    /*
-     * Object should now be either int or wide. Get its value.
-     */
+#if (LONG_MAX == INT_MAX)
+    return TclGetLongFromObj(interp, objPtr, (long *) intPtr);
+#else
+    long l;
 
-#ifndef TCL_WIDE_INT_IS_LONG
-    if (objPtr->typePtr == &tclWideIntType) {
-	w = objPtr->internalRep.wideValue;
-    } else
-#endif
-    {
-	w = Tcl_LongAsWide(objPtr->internalRep.longValue);
+    if (TclGetLongFromObj(interp, objPtr, &l) != TCL_OK) {
+	return TCL_ERROR;
     }
-
-    if ((LLONG_MAX > UINT_MAX)
-	    && ((w > UINT_MAX) || (w < -(Tcl_WideInt)UINT_MAX))) {
+    if ((ULONG_MAX > UINT_MAX) && ((l > UINT_MAX) || (l < -(long)UINT_MAX))) {
 	if (interp != NULL) {
-	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
-		"integer value too large to represent as non-long integer",
-		-1));
+	    CONST char *s =
+		    "integer value too large to represent as non-long integer";
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
+	    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
 	}
 	return TCL_ERROR;
     }
-    *intPtr = (int)w;
+    *intPtr = (int) l;
     return TCL_OK;
+#endif
 }
 
 /*
@@ -2159,173 +2451,24 @@ Tcl_GetIntFromObj(interp, objPtr, intPtr)
  *
  * SetIntFromAny --
  *
- *	Attempts to force the internal representation for a Tcl object
- *	to tclIntType, specifically.
- *
- * Results:
- *	The return value is a standard object Tcl result.  If an
- *	error occurs during conversion, an error message is left in
- *	the interpreter's result unless "interp" is NULL.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-SetIntFromAny( Tcl_Interp* interp, 
-				/* Tcl interpreter */
-	       Tcl_Obj* objPtr )
-				/* Pointer to the object to convert */
-{
-    int result;
-
-    result = SetIntOrWideFromAny( interp, objPtr );
-    if ( result != TCL_OK ) {
-	return result;
-    }
-    if ( objPtr->typePtr != &tclIntType ) {
-	if ( interp != NULL ) {
-	    char *s = "integer value too large to represent";
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
-	    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, (char *) NULL);
-	}
-	return TCL_ERROR;
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * SetIntOrWideFromAny --
- *
- *	Attempt to generate an integer internal form for the Tcl object
- *	"objPtr".
+ *	Attempts to force the internal representation for a Tcl object to
+ *	tclIntType, specifically.
  *
  * Results:
  *	The return value is a standard object Tcl result. If an error occurs
  *	during conversion, an error message is left in the interpreter's
  *	result unless "interp" is NULL.
  *
- * Side effects:
- *	If no error occurs, an int is stored as "objPtr"s internal
- *	representation. 
- *
  *----------------------------------------------------------------------
  */
 
 static int
-SetIntOrWideFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
-{
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    char *string, *end;
-    int length;
-    register char *p;
-    unsigned long newLong;
-    int isNegative = 0;
-    int isWide = 0;
-
-    /*
-     * Get the string representation. Make it up-to-date if necessary.
-     */
-
-    p = string = Tcl_GetStringFromObj(objPtr, &length);
-
-    /*
-     * Now parse "objPtr"s string as an int. We use an implementation here
-     * that doesn't report errors in interp if interp is NULL. Note: use
-     * strtoul instead of strtol for integer conversions to allow full-size
-     * unsigned numbers, but don't depend on strtoul to handle sign
-     * characters; it won't in some implementations.
-     */
-
-    errno = 0;
-    for ( ;  isspace(UCHAR(*p));  p++) { /* INTL: ISO space. */
-	/* Empty loop body. */
-    }
-    if (*p == '-') {
-	p++;
-	isNegative = 1;
-    } else if (*p == '+') {
-	p++;
-    }
-    if (!isdigit(UCHAR(*p))) {
-	badInteger:
-	if (interp != NULL) {
-	    /*
-	     * Must copy string before resetting the result in case a caller
-	     * is trying to convert the interpreter's result to an int.
-	     */
-	    
-	    char buf[100];
-	    sprintf(buf, "expected integer but got \"%.50s\"", string);
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1);
-	    TclCheckBadOctal(interp, string);
-	}
-	return TCL_ERROR;
-    }
-    newLong = strtoul(p, &end, 0);
-    if (end == p) {
-	goto badInteger;
-    }
-    if (errno == ERANGE) {
-	if (interp != NULL) {
-	    char *s = "integer value too large to represent";
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
-	    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, (char *) NULL);
-	}
-	return TCL_ERROR;
-    }
-
-    /*
-     * Make sure that the string has no garbage after the end of the int.
-     */
-    
-    while ((end < (string+length))
-	    && isspace(UCHAR(*end))) { /* INTL: ISO space. */
-	end++;
-    }
-    if (end != (string+length)) {
-	goto badInteger;
-    }
-
-    /*
-     * If the resulting integer will exceed the range of a long,
-     * put it into a wide instead.  (Tcl Bug #868489)
-     */
-
-#ifndef TCL_WIDE_INT_IS_LONG
-    if ((isNegative && newLong > (unsigned long) (LONG_MAX) + 1)
-	    || (!isNegative && newLong > LONG_MAX)) {
-	isWide = 1;
-    }
-#endif
-
-    /*
-     * The conversion to int succeeded. Free the old internalRep before
-     * setting the new one. We do this as late as possible to allow the
-     * conversion code, in particular Tcl_GetStringFromObj, to use that old
-     * internalRep.
-     */
-
-    if ((oldTypePtr != NULL) &&	(oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-
-    if (isWide) {
-	objPtr->internalRep.wideValue =
-		(isNegative ? -(Tcl_WideInt)newLong : (Tcl_WideInt)newLong);
-	objPtr->typePtr = &tclWideIntType;
-    } else {
-	objPtr->internalRep.longValue =
-		(isNegative ? -(long)newLong : (long)newLong);
-	objPtr->typePtr = &tclIntType;
-    }
-    return TCL_OK;
+SetIntFromAny(
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    Tcl_Obj *objPtr)		/* Pointer to the object to convert */
+{
+    long l;
+    return TclGetLongFromObj(interp, objPtr, &l);
 }
 
 /*
@@ -2333,29 +2476,29 @@ SetIntOrWideFromAny(interp, objPtr)
  *
  * UpdateStringOfInt --
  *
- *	Update the string representation for an integer object.
- *	Note: This procedure does not free an existing old string rep
- *	so storage will be lost if this has not already been done. 
+ *	Update the string representation for an integer object. Note: This
+ *	function does not free an existing old string rep so storage will be
+ *	lost if this has not already been done.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The object's string is set to a valid string that results from
- *	the int-to-string conversion.
+ *	The object's string is set to a valid string that results from the
+ *	int-to-string conversion.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfInt(objPtr)
-    register Tcl_Obj *objPtr;	/* Int object whose string rep to update. */
+UpdateStringOfInt(
+    register Tcl_Obj *objPtr)	/* Int object whose string rep to update. */
 {
     char buffer[TCL_INTEGER_SPACE];
     register int len;
-    
+
     len = TclFormatInt(buffer, objPtr->internalRep.longValue);
-    
+
     objPtr->bytes = ckalloc((unsigned) len + 1);
     strcpy(objPtr->bytes, buffer);
     objPtr->length = len;
@@ -2367,23 +2510,23 @@ UpdateStringOfInt(objPtr)
  * Tcl_NewLongObj --
  *
  *	If a client is compiled with TCL_MEM_DEBUG defined, calls to
- *	Tcl_NewLongObj to create a new long integer object end up calling
- *	the debugging procedure Tcl_DbNewLongObj instead.
+ *	Tcl_NewLongObj to create a new long integer object end up calling the
+ *	debugging function Tcl_DbNewLongObj instead.
  *
  *	Otherwise, if the client is compiled without TCL_MEM_DEBUG defined,
  *	calls to Tcl_NewLongObj result in a call to one of the two
  *	Tcl_NewLongObj implementations below. We provide two implementations
- *	so that the Tcl core can be compiled to do memory debugging of the 
+ *	so that the Tcl core can be compiled to do memory debugging of the
  *	core even if a client does not request it for itself.
  *
  *	Integer and long integer objects share the same "integer" type
  *	implementation. We store all integers as longs and Tcl_GetIntFromObj
- *	checks whether the current value of the long can be represented by
- *	an int.
+ *	checks whether the current value of the long can be represented by an
+ *	int.
  *
  * Results:
- *	The newly created object is returned. This object will have an
- *	invalid string representation. The returned object has ref count 0.
+ *	The newly created object is returned. This object will have an invalid
+ *	string representation. The returned object has ref count 0.
  *
  * Side effects:
  *	None.
@@ -2395,8 +2538,8 @@ UpdateStringOfInt(objPtr)
 #undef Tcl_NewLongObj
 
 Tcl_Obj *
-Tcl_NewLongObj(longValue)
-    register long longValue;	/* Long integer used to initialize the
+Tcl_NewLongObj(
+    register long longValue)	/* Long integer used to initialize the
 				 * new object. */
 {
     return Tcl_DbNewLongObj(longValue, "unknown", 0);
@@ -2405,17 +2548,13 @@ Tcl_NewLongObj(longValue)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewLongObj(longValue)
-    register long longValue;	/* Long integer used to initialize the
+Tcl_NewLongObj(
+    register long longValue)	/* Long integer used to initialize the
 				 * new object. */
 {
     register Tcl_Obj *objPtr;
 
-    TclNewObj(objPtr);
-    objPtr->bytes = NULL;
-    
-    objPtr->internalRep.longValue = longValue;
-    objPtr->typePtr = &tclIntType;
+    TclNewLongObj(objPtr, longValue);
     return objPtr;
 }
 #endif /* if TCL_MEM_DEBUG */
@@ -2426,26 +2565,25 @@ Tcl_NewLongObj(longValue)
  * Tcl_DbNewLongObj --
  *
  *	If a client is compiled with TCL_MEM_DEBUG defined, calls to
- *	Tcl_NewIntObj and Tcl_NewLongObj to create new integer or
- *	long integer objects end up calling the debugging procedure
- *	Tcl_DbNewLongObj instead. We provide two implementations of
- *	Tcl_DbNewLongObj so that whether the Tcl core is compiled to do
- *	memory debugging of the core is independent of whether a client
- *	requests debugging for itself.
- *
- *	When the core is compiled with TCL_MEM_DEBUG defined,
- *	Tcl_DbNewLongObj calls Tcl_DbCkalloc directly with the file name and
- *	line number from its caller. This simplifies debugging since then
- *	the [memory active] command will report the caller's file name and
- *	line number when reporting objects that haven't been freed.
+ *	Tcl_NewIntObj and Tcl_NewLongObj to create new integer or long integer
+ *	objects end up calling the debugging function Tcl_DbNewLongObj
+ *	instead. We provide two implementations of Tcl_DbNewLongObj so that
+ *	whether the Tcl core is compiled to do memory debugging of the core is
+ *	independent of whether a client requests debugging for itself.
+ *
+ *	When the core is compiled with TCL_MEM_DEBUG defined, Tcl_DbNewLongObj
+ *	calls Tcl_DbCkalloc directly with the file name and line number from
+ *	its caller. This simplifies debugging since then the [memory active]
+ *	command will report the caller's file name and line number when
+ *	reporting objects that haven't been freed.
  *
  *	Otherwise, when the core is compiled without TCL_MEM_DEBUG defined,
- *	this procedure just returns the result of calling Tcl_NewLongObj.
+ *	this function just returns the result of calling Tcl_NewLongObj.
  *
  * Results:
- *	The newly created long integer object is returned. This object
- *	will have an invalid string representation. The returned object has
- *	ref count 0.
+ *	The newly created long integer object is returned. This object will
+ *	have an invalid string representation. The returned object has ref
+ *	count 0.
  *
  * Side effects:
  *	Allocates memory.
@@ -2456,19 +2594,19 @@ Tcl_NewLongObj(longValue)
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewLongObj(longValue, file, line)
-    register long longValue;	/* Long integer used to initialize the
-				 * new object. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewLongObj(
+    register long longValue,	/* Long integer used to initialize the new
+				 * object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     register Tcl_Obj *objPtr;
 
     TclDbNewObj(objPtr, file, line);
     objPtr->bytes = NULL;
-    
+
     objPtr->internalRep.longValue = longValue;
     objPtr->typePtr = &tclIntType;
     return objPtr;
@@ -2477,13 +2615,13 @@ Tcl_DbNewLongObj(longValue, file, line)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewLongObj(longValue, file, line)
-    register long longValue;	/* Long integer used to initialize the
-				 * new object. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbNewLongObj(
+    register long longValue,	/* Long integer used to initialize the new
+				 * object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewLongObj(longValue);
 }
@@ -2501,31 +2639,23 @@ Tcl_DbNewLongObj(longValue, file, line)
  *	None.
  *
  * Side effects:
- *	The object's old string rep, if any, is freed. Also, any old
- *	internal rep is freed. 
+ *	The object's old string rep, if any, is freed. Also, any old internal
+ *	rep is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetLongObj(objPtr, longValue)
-    register Tcl_Obj *objPtr;	/* Object whose internal rep to init. */
-    register long longValue;	/* Long integer used to initialize the
+Tcl_SetLongObj(
+    register Tcl_Obj *objPtr,	/* Object whose internal rep to init. */
+    register long longValue)	/* Long integer used to initialize the
 				 * object's value. */
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetLongObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetLongObj");
     }
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-    
-    objPtr->internalRep.longValue = longValue;
-    objPtr->typePtr = &tclIntType;
-    Tcl_InvalidateStringRep(objPtr);
+    TclSetLongObj(objPtr, longValue);
 }
 
 /*
@@ -2533,8 +2663,8 @@ Tcl_SetLongObj(objPtr, longValue)
  *
  * Tcl_GetLongFromObj --
  *
- *	Attempt to return an long integer from the Tcl object "objPtr". If
- *	the object is not already an int object, an attempt will be made to
+ *	Attempt to return an long integer from the Tcl object "objPtr". If the
+ *	object is not already an int object, an attempt will be made to
  *	convert it to one.
  *
  * Results:
@@ -2550,211 +2680,133 @@ Tcl_SetLongObj(objPtr, longValue)
  */
 
 int
-Tcl_GetLongFromObj(interp, objPtr, longPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object from which to get a long. */
-    register long *longPtr;	/* Place to store resulting long. */
+Tcl_GetLongFromObj(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr,	/* The object from which to get a long. */
+    register long *longPtr)	/* Place to store resulting long. */
 {
-    register int result;
-    
-    if (objPtr->typePtr != &tclIntType && objPtr->typePtr != &tclWideIntType) {
-	result = SetIntOrWideFromAny(interp, objPtr);
-	if (result != TCL_OK) {
-	    return result;
+    do {
+	if (objPtr->typePtr == &tclIntType) {
+	    *longPtr = objPtr->internalRep.longValue;
+	    return TCL_OK;
 	}
-    }
-
-#ifndef TCL_WIDE_INT_IS_LONG
-    if (objPtr->typePtr == &tclWideIntType) {
-	/*
-	 * If the object is already a wide integer, don't convert it.
-	 * This code allows for any integer in the range -ULONG_MAX to
-	 * ULONG_MAX to be converted to a long, ignoring overflow.
-	 * The rule preserves existing semantics for conversion of
-	 * integers on input, but avoids inadvertent demotion of
-	 * wide integers to 32-bit ones in the internal rep.
-	 */
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    /*
+	     * We return any integer in the range -ULONG_MAX to ULONG_MAX
+	     * converted to a long, ignoring overflow. The rule preserves
+	     * existing semantics for conversion of integers on input, but
+	     * avoids inadvertent demotion of wide integers to 32-bit ones in
+	     * the internal rep.
+	     */
 
-	Tcl_WideInt w = objPtr->internalRep.wideValue;
-	if (w >= -(Tcl_WideInt)(ULONG_MAX) && w <= (Tcl_WideInt)(ULONG_MAX)) {
-	    *longPtr = Tcl_WideAsLong(w);
-	    return TCL_OK;
-	} else {
-	    if (interp != NULL) {
-		Tcl_ResetResult(interp);
-		Tcl_AppendToObj(Tcl_GetObjResult(interp),
-			"integer value too large to represent", -1);
+	    Tcl_WideInt w = objPtr->internalRep.wideValue;
+	    if (w >= -(Tcl_WideInt)(ULONG_MAX)
+		    && w <= (Tcl_WideInt)(ULONG_MAX)) {
+		*longPtr = Tcl_WideAsLong(w);
+		return TCL_OK;
 	    }
-	    return TCL_ERROR;
+	    goto tooLarge;
 	}
-    }
-#endif
-
-    *longPtr = objPtr->internalRep.longValue;
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * SetWideIntFromAny --
- *
- *	Attempt to generate an integer internal form for the Tcl object
- *	"objPtr".
- *
- * Results:
- *	The return value is a standard object Tcl result. If an error occurs
- *	during conversion, an error message is left in the interpreter's
- *	result unless "interp" is NULL.
- *
- * Side effects:
- *	If no error occurs, an int is stored as "objPtr"s internal
- *	representation. 
- *
- *----------------------------------------------------------------------
- */
-
-static int
-SetWideIntFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
-{
-#ifndef TCL_WIDE_INT_IS_LONG
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-    char *string, *end;
-    int length;
-    register char *p;
-    Tcl_WideInt newWide;
-
-    /*
-     * Get the string representation. Make it up-to-date if necessary.
-     */
-
-    p = string = Tcl_GetStringFromObj(objPtr, &length);
-
-    /*
-     * Now parse "objPtr"s string as an int. We use an implementation here
-     * that doesn't report errors in interp if interp is NULL. Note: use
-     * strtoull instead of strtoll for integer conversions to allow full-size
-     * unsigned numbers, but don't depend on strtoull to handle sign
-     * characters; it won't in some implementations.
-     */
-
-    errno = 0;
-#ifdef TCL_STRTOUL_SIGN_CHECK
-    for ( ;  isspace(UCHAR(*p));  p++) { /* INTL: ISO space. */
-	/* Empty loop body. */
-    }
-    if (*p == '-') {
-	p++;
-	newWide = -((Tcl_WideInt)strtoull(p, &end, 0));
-    } else if (*p == '+') {
-	p++;
-	newWide = strtoull(p, &end, 0);
-    } else
-#else
-	newWide = strtoull(p, &end, 0);
 #endif
-    if (end == p) {
-	badInteger:
-	if (interp != NULL) {
+        if (objPtr->typePtr == &tclDoubleType) {
+            if (interp != NULL) {
+		Tcl_Obj *msg;
+
+		TclNewLiteralStringObj(msg, "expected integer but got \"");
+		Tcl_AppendObjToObj(msg, objPtr);
+		Tcl_AppendToObj(msg, "\"", -1);
+		Tcl_SetObjResult(interp, msg);
+	    }
+	    return TCL_ERROR;
+	}
+        if (objPtr->typePtr == &tclBignumType) {
 	    /*
-	     * Must copy string before resetting the result in case a caller
-	     * is trying to convert the interpreter's result to an int.
+	     * Must check for those bignum values that can fit in a long, even
+	     * when auto-narrowing is enabled. Only those values in the signed
+	     * long range get auto-narrowed to tclIntType, while all the
+	     * values in the unsigned long range will fit in a long.
 	     */
-	    
-	    char buf[100];
-	    sprintf(buf, "expected integer but got \"%.50s\"", string);
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1);
-	    TclCheckBadOctal(interp, string);
-	}
-	return TCL_ERROR;
-    }
-    if (errno == ERANGE) {
-	if (interp != NULL) {
-	    char *s = "integer value too large to represent";
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp), s, -1);
-	    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, (char *) NULL);
-	}
-	return TCL_ERROR;
-    }
-
-    /*
-     * Make sure that the string has no garbage after the end of the int.
-     */
-    
-    while ((end < (string+length))
-	    && isspace(UCHAR(*end))) { /* INTL: ISO space. */
-	end++;
-    }
-    if (end != (string+length)) {
-	goto badInteger;
-    }
 
-    /*
-     * The conversion to int succeeded. Free the old internalRep before
-     * setting the new one. We do this as late as possible to allow the
-     * conversion code, in particular Tcl_GetStringFromObj, to use that old
-     * internalRep.
-     */
-
-    if ((oldTypePtr != NULL) &&	(oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-    
-    objPtr->internalRep.wideValue = newWide;
-#else 
-    if (TCL_ERROR == SetIntFromAny(interp, objPtr)) {
-	return TCL_ERROR;
-    }
+	    mp_int big;
+
+	    UNPACK_BIGNUM(objPtr, big);
+	    if ((size_t)(big.used) <= (CHAR_BIT * sizeof(long) + DIGIT_BIT - 1)
+		    / DIGIT_BIT) {
+		unsigned long value = 0, numBytes = sizeof(long);
+		long scratch;
+		unsigned char *bytes = (unsigned char *)&scratch;
+		if (mp_to_unsigned_bin_n(&big, bytes, &numBytes) == MP_OKAY) {
+		    while (numBytes-- > 0) {
+			value = (value << CHAR_BIT) | *bytes++;
+		    }
+		    if (big.sign) {
+			*longPtr = - (long) value;
+		    } else {
+			*longPtr = (long) value;
+		    }
+		    return TCL_OK;
+		}
+	    }
+#ifndef NO_WIDE_TYPE
+	tooLarge:
 #endif
-    objPtr->typePtr = &tclWideIntType;
-    return TCL_OK;
+	    if (interp != NULL) {
+		char *s = "integer value too large to represent";
+		Tcl_Obj *msg = Tcl_NewStringObj(s, -1);
+
+		Tcl_SetObjResult(interp, msg);
+		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
+	    }
+	    return TCL_ERROR;
+	}
+    } while (TclParseNumber(interp, objPtr, "integer", NULL, -1, NULL,
+	    TCL_PARSE_INTEGER_ONLY)==TCL_OK);
+    return TCL_ERROR;
 }
+#ifndef NO_WIDE_TYPE
 
 /*
  *----------------------------------------------------------------------
  *
  * UpdateStringOfWideInt --
  *
- *	Update the string representation for a wide integer object.
- *	Note: This procedure does not free an existing old string rep
- *	so storage will be lost if this has not already been done. 
+ *	Update the string representation for a wide integer object. Note: this
+ *	function does not free an existing old string rep so storage will be
+ *	lost if this has not already been done.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The object's string is set to a valid string that results from
- *	the wideInt-to-string conversion.
+ *	The object's string is set to a valid string that results from the
+ *	wideInt-to-string conversion.
  *
  *----------------------------------------------------------------------
  */
 
-#ifndef TCL_WIDE_INT_IS_LONG
 static void
-UpdateStringOfWideInt(objPtr)
-    register Tcl_Obj *objPtr;	/* Int object whose string rep to update. */
+UpdateStringOfWideInt(
+    register Tcl_Obj *objPtr)	/* Int object whose string rep to update. */
 {
     char buffer[TCL_INTEGER_SPACE+2];
     register unsigned len;
     register Tcl_WideInt wideVal = objPtr->internalRep.wideValue;
 
     /*
-     * Note that sprintf will generate a compiler warning under
-     * Mingw claiming %I64 is an unknown format specifier.
-     * Just ignore this warning. We can't use %L as the format
-     * specifier since that gets printed as a 32 bit value.
+     * Note that sprintf will generate a compiler warning under Mingw claiming
+     * %I64 is an unknown format specifier. Just ignore this warning. We can't
+     * use %L as the format specifier since that gets printed as a 32 bit
+     * value.
      */
+
     sprintf(buffer, "%" TCL_LL_MODIFIER "d", wideVal);
     len = strlen(buffer);
     objPtr->bytes = ckalloc((unsigned) len + 1);
     memcpy(objPtr->bytes, buffer, len + 1);
     objPtr->length = len;
 }
-#endif /* TCL_WIDE_INT_IS_LONG */
+#endif /* !NO_WIDE_TYPE */
 
 /*
  *----------------------------------------------------------------------
@@ -2763,17 +2815,17 @@ UpdateStringOfWideInt(objPtr)
  *
  *	If a client is compiled with TCL_MEM_DEBUG defined, calls to
  *	Tcl_NewWideIntObj to create a new 64-bit integer object end up calling
- *	the debugging procedure Tcl_DbNewWideIntObj instead.
+ *	the debugging function Tcl_DbNewWideIntObj instead.
  *
  *	Otherwise, if the client is compiled without TCL_MEM_DEBUG defined,
  *	calls to Tcl_NewWideIntObj result in a call to one of the two
- *	Tcl_NewWideIntObj implementations below. We provide two implementations
- *	so that the Tcl core can be compiled to do memory debugging of the 
- *	core even if a client does not request it for itself.
+ *	Tcl_NewWideIntObj implementations below. We provide two
+ *	implementations so that the Tcl core can be compiled to do memory
+ *	debugging of the core even if a client does not request it for itself.
  *
  * Results:
- *	The newly created object is returned. This object will have an
- *	invalid string representation. The returned object has ref count 0.
+ *	The newly created object is returned. This object will have an invalid
+ *	string representation. The returned object has ref count 0.
  *
  * Side effects:
  *	None.
@@ -2785,9 +2837,10 @@ UpdateStringOfWideInt(objPtr)
 #undef Tcl_NewWideIntObj
 
 Tcl_Obj *
-Tcl_NewWideIntObj(wideValue)
-    register Tcl_WideInt wideValue;	/* Wide integer used to initialize
-					 * the new object. */
+Tcl_NewWideIntObj(
+    register Tcl_WideInt wideValue)
+				/* Wide integer used to initialize the new
+				 * object. */
 {
     return Tcl_DbNewWideIntObj(wideValue, "unknown", 0);
 }
@@ -2795,17 +2848,15 @@ Tcl_NewWideIntObj(wideValue)
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_NewWideIntObj(wideValue)
-    register Tcl_WideInt wideValue;	/* Wide integer used to initialize
-					 * the new object. */
+Tcl_NewWideIntObj(
+    register Tcl_WideInt wideValue)
+				/* Wide integer used to initialize the new
+				 * object. */
 {
     register Tcl_Obj *objPtr;
 
     TclNewObj(objPtr);
-    objPtr->bytes = NULL;
-    
-    objPtr->internalRep.wideValue = wideValue;
-    objPtr->typePtr = &tclWideIntType;
+    Tcl_SetWideIntObj(objPtr, wideValue);
     return objPtr;
 }
 #endif /* if TCL_MEM_DEBUG */
@@ -2816,27 +2867,25 @@ Tcl_NewWideIntObj(wideValue)
  * Tcl_DbNewWideIntObj --
  *
  *	If a client is compiled with TCL_MEM_DEBUG defined, calls to
- *	Tcl_NewWideIntObj to create new wide integer end up calling
- *	the debugging procedure Tcl_DbNewWideIntObj instead. We
- *	provide two implementations of Tcl_DbNewWideIntObj so that
- *	whether the Tcl core is compiled to do memory debugging of the
- *	core is independent of whether a client requests debugging for
- *	itself.
+ *	Tcl_NewWideIntObj to create new wide integer end up calling the
+ *	debugging function Tcl_DbNewWideIntObj instead. We provide two
+ *	implementations of Tcl_DbNewWideIntObj so that whether the Tcl core is
+ *	compiled to do memory debugging of the core is independent of whether
+ *	a client requests debugging for itself.
  *
  *	When the core is compiled with TCL_MEM_DEBUG defined,
- *	Tcl_DbNewWideIntObj calls Tcl_DbCkalloc directly with the file
- *	name and line number from its caller. This simplifies
- *	debugging since then the checkmem command will report the
- *	caller's file name and line number when reporting objects that
- *	haven't been freed.
+ *	Tcl_DbNewWideIntObj calls Tcl_DbCkalloc directly with the file name
+ *	and line number from its caller. This simplifies debugging since then
+ *	the checkmem command will report the caller's file name and line
+ *	number when reporting objects that haven't been freed.
  *
  *	Otherwise, when the core is compiled without TCL_MEM_DEBUG defined,
- *	this procedure just returns the result of calling Tcl_NewWideIntObj.
+ *	this function just returns the result of calling Tcl_NewWideIntObj.
  *
  * Results:
- *	The newly created wide integer object is returned. This object
- *	will have an invalid string representation. The returned object has
- *	ref count 0.
+ *	The newly created wide integer object is returned. This object will
+ *	have an invalid string representation. The returned object has ref
+ *	count 0.
  *
  * Side effects:
  *	Allocates memory.
@@ -2847,36 +2896,33 @@ Tcl_NewWideIntObj(wideValue)
 #ifdef TCL_MEM_DEBUG
 
 Tcl_Obj *
-Tcl_DbNewWideIntObj(wideValue, file, line)
-    register Tcl_WideInt wideValue;	/* Wide integer used to initialize
-					 * the new object. */
-    CONST char *file;			/* The name of the source file
-					 * calling this procedure; used for
-					 * debugging. */
-    int line;				/* Line number in the source file;
-					 * used for debugging. */
+Tcl_DbNewWideIntObj(
+    register Tcl_WideInt wideValue,
+				/* Wide integer used to initialize the new
+				 * object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     register Tcl_Obj *objPtr;
 
     TclDbNewObj(objPtr, file, line);
-    objPtr->bytes = NULL;
-    
-    objPtr->internalRep.wideValue = wideValue;
-    objPtr->typePtr = &tclWideIntType;
+    Tcl_SetWideIntObj(objPtr, wideValue);
     return objPtr;
 }
 
 #else /* if not TCL_MEM_DEBUG */
 
 Tcl_Obj *
-Tcl_DbNewWideIntObj(wideValue, file, line)
-    register Tcl_WideInt wideValue;	/* Long integer used to initialize
-					 * the new object. */
-    CONST char *file;			/* The name of the source file
-					 * calling this procedure; used for
-					 * debugging. */
-    int line;				/* Line number in the source file;
-					 * used for debugging. */
+Tcl_DbNewWideIntObj(
+    register Tcl_WideInt wideValue,
+				/* Long integer used to initialize the new
+				 * object. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewWideIntObj(wideValue);
 }
@@ -2887,38 +2933,43 @@ Tcl_DbNewWideIntObj(wideValue, file, line)
  *
  * Tcl_SetWideIntObj --
  *
- *	Modify an object to be a wide integer object and to have the
- *	specified wide integer value.
+ *	Modify an object to be a wide integer object and to have the specified
+ *	wide integer value.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The object's old string rep, if any, is freed. Also, any old
- *	internal rep is freed. 
+ *	The object's old string rep, if any, is freed. Also, any old internal
+ *	rep is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetWideIntObj(objPtr, wideValue)
-    register Tcl_Obj *objPtr;		/* Object w. internal rep to init. */
-    register Tcl_WideInt wideValue;	/* Wide integer used to initialize
-					 * the object's value. */
+Tcl_SetWideIntObj(
+    register Tcl_Obj *objPtr,	/* Object w. internal rep to init. */
+    register Tcl_WideInt wideValue)
+				/* Wide integer used to initialize the
+				 * object's value. */
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetWideIntObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetWideIntObj");
     }
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
+    if ((wideValue >= (Tcl_WideInt) LONG_MIN)
+	    && (wideValue <= (Tcl_WideInt) LONG_MAX)) {
+	TclSetLongObj(objPtr, (long) wideValue);
+    } else {
+#ifndef NO_WIDE_TYPE
+	TclSetWideIntObj(objPtr, wideValue);
+#else
+	mp_int big;
+
+	TclBNInitBignumFromWideInt(&big, wideValue);
+	Tcl_SetBignumObj(objPtr, &big);
+#endif
     }
-    
-    objPtr->internalRep.wideValue = wideValue;
-    objPtr->typePtr = &tclWideIntType;
-    Tcl_InvalidateStringRep(objPtr);
 }
 
 /*
@@ -2926,9 +2977,9 @@ Tcl_SetWideIntObj(objPtr, wideValue)
  *
  * Tcl_GetWideIntFromObj --
  *
- *	Attempt to return a wide integer from the Tcl object "objPtr". If
- *	the object is not already a wide int object, an attempt will be made
- *	to convert it to one.
+ *	Attempt to return a wide integer from the Tcl object "objPtr". If the
+ *	object is not already a wide int object, an attempt will be made to
+ *	convert it to one.
  *
  * Results:
  *	The return value is a standard Tcl object result. If an error occurs
@@ -2943,33 +2994,589 @@ Tcl_SetWideIntObj(objPtr, wideValue)
  */
 
 int
-Tcl_GetWideIntFromObj(interp, objPtr, wideIntPtr)
-    Tcl_Interp *interp; 	/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* Object from which to get a wide int. */
-    register Tcl_WideInt *wideIntPtr; /* Place to store resulting long. */
+Tcl_GetWideIntFromObj(
+    Tcl_Interp *interp, 	/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr,	/* Object from which to get a wide int. */
+    register Tcl_WideInt *wideIntPtr)
+				/* Place to store resulting long. */
+{
+    do {
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    *wideIntPtr = objPtr->internalRep.wideValue;
+	    return TCL_OK;
+	}
+#endif
+	if (objPtr->typePtr == &tclIntType) {
+	    *wideIntPtr = (Tcl_WideInt) objPtr->internalRep.longValue;
+	    return TCL_OK;
+	}
+        if (objPtr->typePtr == &tclDoubleType) {
+            if (interp != NULL) {
+		Tcl_Obj *msg;
+
+		TclNewLiteralStringObj(msg, "expected integer but got \"");
+		Tcl_AppendObjToObj(msg, objPtr);
+		Tcl_AppendToObj(msg, "\"", -1);
+		Tcl_SetObjResult(interp, msg);
+	    }
+	    return TCL_ERROR;
+	}
+        if (objPtr->typePtr == &tclBignumType) {
+	    /*
+	     * Must check for those bignum values that can fit in a
+	     * Tcl_WideInt, even when auto-narrowing is enabled.
+	     */
+
+	    mp_int big;
+
+	    UNPACK_BIGNUM(objPtr, big);
+	    if ((size_t)(big.used) <= (CHAR_BIT * sizeof(Tcl_WideInt)
+		     + DIGIT_BIT - 1) / DIGIT_BIT) {
+		Tcl_WideUInt value = 0;
+		unsigned long numBytes = sizeof(Tcl_WideInt);
+		Tcl_WideInt scratch;
+		unsigned char *bytes = (unsigned char *) &scratch;
+
+		if (mp_to_unsigned_bin_n(&big, bytes, &numBytes) == MP_OKAY) {
+		    while (numBytes-- > 0) {
+			value = (value << CHAR_BIT) | *bytes++;
+		    }
+		    if (big.sign) {
+			*wideIntPtr = - (Tcl_WideInt) value;
+		    } else {
+			*wideIntPtr = (Tcl_WideInt) value;
+		    }
+		    return TCL_OK;
+		}
+	    }
+	    if (interp != NULL) {
+		char *s = "integer value too large to represent";
+		Tcl_Obj* msg = Tcl_NewStringObj(s, -1);
+
+		Tcl_SetObjResult(interp, msg);
+		Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
+	    }
+	    return TCL_ERROR;
+	}
+    } while (TclParseNumber(interp, objPtr, "integer", NULL, -1, NULL,
+	    TCL_PARSE_INTEGER_ONLY)==TCL_OK);
+    return TCL_ERROR;
+}
+#ifndef NO_WIDE_TYPE
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SetWideIntFromAny --
+ *
+ *	Attempts to force the internal representation for a Tcl object to
+ *	tclWideIntType, specifically.
+ *
+ * Results:
+ *	The return value is a standard object Tcl result. If an error occurs
+ *	during conversion, an error message is left in the interpreter's
+ *	result unless "interp" is NULL.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+SetWideIntFromAny(
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    Tcl_Obj *objPtr)		/* Pointer to the object to convert */
 {
-    register int result;
+    Tcl_WideInt w;
+    return Tcl_GetWideIntFromObj(interp, objPtr, &w);
+}
+#endif /* !NO_WIDE_TYPE */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeBignum --
+ *
+ *	This function frees the internal rep of a bignum.
+ *
+ * Results:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    if (objPtr->typePtr == &tclWideIntType) {
-    gotWide:
-	*wideIntPtr = objPtr->internalRep.wideValue;
-	return TCL_OK;
+static void
+FreeBignum(
+    Tcl_Obj *objPtr)
+{
+    mp_int toFree;		/* Bignum to free */
+
+    UNPACK_BIGNUM(objPtr, toFree);
+    mp_clear(&toFree);
+    if ((long)(objPtr->internalRep.ptrAndLongRep.value) < 0) {
+	ckfree((char *)objPtr->internalRep.ptrAndLongRep.ptr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DupBignum --
+ *
+ *	This function duplicates the internal rep of a bignum.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The destination object receies a copy of the source object
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DupBignum(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *copyPtr)
+{
+    mp_int bignumVal;
+    mp_int bignumCopy;
+
+    copyPtr->typePtr = &tclBignumType;
+    UNPACK_BIGNUM(srcPtr, bignumVal);
+    if (mp_init_copy(&bignumCopy, &bignumVal) != MP_OKAY) {
+	Tcl_Panic("initialization failure in DupBignum");
+    }
+    PACK_BIGNUM(bignumCopy, copyPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * UpdateStringOfBignum --
+ *
+ *	This function updates the string representation of a bignum object.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The object's string is set to whatever results from the bignum-
+ *	to-string conversion.
+ *
+ * The object's existing string representation is NOT freed; memory will leak
+ * if the string rep is still valid at the time this function is called.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+UpdateStringOfBignum(
+    Tcl_Obj *objPtr)
+{
+    mp_int bignumVal;
+    int size;
+    int status;
+    char* stringVal;
+
+    UNPACK_BIGNUM(objPtr, bignumVal);
+    status = mp_radix_size(&bignumVal, 10, &size);
+    if (status != MP_OKAY) {
+	Tcl_Panic("radix size failure in UpdateStringOfBignum");
     }
-    if (objPtr->typePtr == &tclIntType) {
+    if (size == 3) {
 	/*
-	 * This cast is safe; all valid ints/longs are wides.
+	 * mp_radix_size() returns 3 when more than INT_MAX bytes would be
+	 * needed to hold the string rep (because mp_radix_size ignores
+	 * integer overflow issues). When we know the string rep will be more
+	 * than 3, we can conclude the string rep would overflow our string
+	 * length limits.
+	 *
+	 * Note that so long as we enforce our bignums to the size that fits
+	 * in a packed bignum, this branch will never be taken.
 	 */
 
-	objPtr->internalRep.wideValue =
-		Tcl_LongAsWide(objPtr->internalRep.longValue);
-	objPtr->typePtr = &tclWideIntType;
-	goto gotWide;
+	Tcl_Panic("UpdateStringOfBignum: string length limit exceeded");
     }
-    result = SetWideIntFromAny(interp, objPtr);
-    if (result == TCL_OK) {
-	*wideIntPtr = objPtr->internalRep.wideValue;
+    stringVal = ckalloc((size_t) size);
+    status = mp_toradix_n(&bignumVal, stringVal, 10, size);
+    if (status != MP_OKAY) {
+	Tcl_Panic("conversion failure in UpdateStringOfBignum");
     }
-    return result;
+    objPtr->bytes = stringVal;
+    objPtr->length = size - 1;	/* size includes a trailing null byte */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_NewBignumObj --
+ *
+ *	Creates an initializes a bignum object.
+ *
+ * Results:
+ *	Returns the newly created object.
+ *
+ * Side effects:
+ *	The bignum value is cleared, since ownership has transferred to Tcl.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef TCL_MEM_DEBUG
+#undef Tcl_NewBignumObj
+
+Tcl_Obj *
+Tcl_NewBignumObj(
+    mp_int *bignumValue)
+{
+    return Tcl_DbNewBignumObj(bignumValue, "unknown", 0);
+}
+#else
+Tcl_Obj *
+Tcl_NewBignumObj(
+    mp_int *bignumValue)
+{
+    Tcl_Obj* objPtr;
+
+    TclNewObj(objPtr);
+    Tcl_SetBignumObj(objPtr, bignumValue);
+    return objPtr;
+}
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DbNewBignumObj --
+ *
+ *	This function is normally called when debugging: that is, when
+ *	TCL_MEM_DEBUG is defined. It constructs a bignum object, recording the
+ *	creation point so that [memory active] can report it.
+ *
+ * Results:
+ *	Returns the newly created object.
+ *
+ * Side effects:
+ *	The bignum value is cleared, since ownership has transferred to Tcl.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef TCL_MEM_DEBUG
+Tcl_Obj *
+Tcl_DbNewBignumObj(
+    mp_int *bignumValue,
+    CONST char *file,
+    int line)
+{
+    Tcl_Obj *objPtr;
+
+    TclDbNewObj(objPtr, file, line);
+    Tcl_SetBignumObj(objPtr, bignumValue);
+    return objPtr;
+}
+#else
+Tcl_Obj *
+Tcl_DbNewBignumObj(
+    mp_int *bignumValue,
+    CONST char *file,
+    int line)
+{
+    return Tcl_NewBignumObj(bignumValue);
+}
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetBignumFromObj --
+ *
+ *	This function retrieves a 'bignum' value from a Tcl object, converting
+ *	the object if necessary. Either copies or transfers the mp_int value
+ *	depending on the copy flag value passed in.
+ *
+ * Results:
+ *	Returns TCL_OK if the conversion is successful, TCL_ERROR otherwise.
+ *
+ * Side effects:
+ *	A copy of bignum is stored in *bignumValue, which is expected to be
+ *	uninitialized or cleared. If conversion fails, and the 'interp'
+ *	argument is not NULL, an error message is stored in the interpreter
+ *	result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+GetBignumFromObj(
+    Tcl_Interp *interp,		/* Tcl interpreter for error reporting */
+    Tcl_Obj *objPtr,		/* Object to read */
+    int copy,			/* Whether to copy the returned bignum value */
+    mp_int *bignumValue)	/* Returned bignum value. */
+{
+    do {
+	if (objPtr->typePtr == &tclBignumType) {
+	    if (copy || Tcl_IsShared(objPtr)) {
+		mp_int temp;
+		UNPACK_BIGNUM(objPtr, temp);
+		mp_init_copy(bignumValue, &temp);
+	    } else {
+		UNPACK_BIGNUM(objPtr, *bignumValue);
+		objPtr->internalRep.ptrAndLongRep.ptr = NULL;
+		objPtr->internalRep.ptrAndLongRep.value = 0;
+		objPtr->typePtr = NULL;
+		if (objPtr->bytes == NULL) {
+		    TclInitStringRep(objPtr, tclEmptyStringRep, 0);
+		}
+	    }
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclIntType) {
+	    TclBNInitBignumFromLong(bignumValue, objPtr->internalRep.longValue);
+	    return TCL_OK;
+	}
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    TclBNInitBignumFromWideInt(bignumValue,
+		    objPtr->internalRep.wideValue);
+	    return TCL_OK;
+	}
+#endif
+	if (objPtr->typePtr == &tclDoubleType) {
+	    if (interp != NULL) {
+		Tcl_Obj *msg;
+
+		TclNewLiteralStringObj(msg, "expected integer but got \"");
+		Tcl_AppendObjToObj(msg, objPtr);
+		Tcl_AppendToObj(msg, "\"", -1);
+		Tcl_SetObjResult(interp, msg);
+	    }
+	    return TCL_ERROR;
+	}
+    } while (TclParseNumber(interp, objPtr, "integer", NULL, -1, NULL,
+	    TCL_PARSE_INTEGER_ONLY)==TCL_OK);
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetBignumFromObj --
+ *
+ *	This function retrieves a 'bignum' value from a Tcl object, converting
+ *	the object if necessary.
+ *
+ * Results:
+ *	Returns TCL_OK if the conversion is successful, TCL_ERROR otherwise.
+ *
+ * Side effects:
+ *	A copy of bignum is stored in *bignumValue, which is expected to be
+ *	uninitialized or cleared. If conversion fails, an the 'interp'
+ *	argument is not NULL, an error message is stored in the interpreter
+ *	result.
+ *
+ *	It is expected that the caller will NOT have invoked mp_init on the
+ *	bignum value before passing it in. Tcl will initialize the mp_int as
+ *	it sets the value. The value is a copy of the value in objPtr, so it
+ *	becomes the responsibility of the caller to call mp_clear on it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_GetBignumFromObj(
+    Tcl_Interp *interp,		/* Tcl interpreter for error reporting */
+    Tcl_Obj *objPtr,		/* Object to read */
+    mp_int *bignumValue)	/* Returned bignum value. */
+{
+    return GetBignumFromObj(interp, objPtr, 1, bignumValue);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_TakeBignumFromObj --
+ *
+ *	This function retrieves a 'bignum' value from a Tcl object, converting
+ *	the object if necessary.
+ *
+ * Results:
+ *	Returns TCL_OK if the conversion is successful, TCL_ERROR otherwise.
+ *
+ * Side effects:
+ *	A copy of bignum is stored in *bignumValue, which is expected to be
+ *	uninitialized or cleared. If conversion fails, an the 'interp'
+ *	argument is not NULL, an error message is stored in the interpreter
+ *	result.
+ *
+ *	It is expected that the caller will NOT have invoked mp_init on the
+ *	bignum value before passing it in. Tcl will initialize the mp_int as
+ *	it sets the value. The value is transferred from the internals of
+ *	objPtr to the caller, passing responsibility of the caller to call
+ *	mp_clear on it. The objPtr is cleared to hold an empty value.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_TakeBignumFromObj(
+    Tcl_Interp *interp,		/* Tcl interpreter for error reporting */
+    Tcl_Obj *objPtr,		/* Object to read */
+    mp_int *bignumValue)	/* Returned bignum value. */
+{
+    return GetBignumFromObj(interp, objPtr, 0, bignumValue);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SetBignumObj --
+ *
+ *	This function sets the value of a Tcl_Obj to a large integer.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Object value is stored. The bignum value is cleared, since ownership
+ *	has transferred to Tcl.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_SetBignumObj(
+    Tcl_Obj *objPtr,		/* Object to set */
+    mp_int *bignumValue)	/* Value to store */
+{
+    if (Tcl_IsShared(objPtr)) {
+	Tcl_Panic("%s called with shared object", "Tcl_SetBignumObj");
+    }
+    if ((size_t)(bignumValue->used)
+	    <= (CHAR_BIT * sizeof(long) + DIGIT_BIT - 1) / DIGIT_BIT) {
+	unsigned long value = 0, numBytes = sizeof(long);
+	long scratch;
+	unsigned char *bytes = (unsigned char *)&scratch;
+	if (mp_to_unsigned_bin_n(bignumValue, bytes, &numBytes) != MP_OKAY) {
+	    goto tooLargeForLong;
+	}
+	while (numBytes-- > 0) {
+	    value = (value << CHAR_BIT) | *bytes++;
+	}
+	if (value > (((~(unsigned long)0) >> 1) + bignumValue->sign)) {
+	    goto tooLargeForLong;
+	}
+	if (bignumValue->sign) {
+	    TclSetLongObj(objPtr, -(long)value);
+	} else {
+	    TclSetLongObj(objPtr, (long)value);
+	}
+	mp_clear(bignumValue);
+	return;
+    }
+  tooLargeForLong:
+#ifndef NO_WIDE_TYPE
+    if ((size_t)(bignumValue->used)
+	    <= (CHAR_BIT * sizeof(Tcl_WideInt) + DIGIT_BIT - 1) / DIGIT_BIT) {
+	Tcl_WideUInt value = 0;
+	unsigned long numBytes = sizeof(Tcl_WideInt);
+	Tcl_WideInt scratch;
+	unsigned char *bytes = (unsigned char *)&scratch;
+	if (mp_to_unsigned_bin_n(bignumValue, bytes, &numBytes) != MP_OKAY) {
+	    goto tooLargeForWide;
+	}
+	while (numBytes-- > 0) {
+	    value = (value << CHAR_BIT) | *bytes++;
+	}
+	if (value > (((~(Tcl_WideUInt)0) >> 1) + bignumValue->sign)) {
+	    goto tooLargeForWide;
+	}
+	if (bignumValue->sign) {
+	    TclSetWideIntObj(objPtr, -(Tcl_WideInt)value);
+	} else {
+	    TclSetWideIntObj(objPtr, (Tcl_WideInt)value);
+	}
+	mp_clear(bignumValue);
+	return;
+    }
+  tooLargeForWide:
+#endif
+    TclInvalidateStringRep(objPtr);
+    TclFreeIntRep(objPtr);
+    TclSetBignumIntRep(objPtr, bignumValue);
+}
+
+void
+TclSetBignumIntRep(
+    Tcl_Obj *objPtr,
+    mp_int *bignumValue)
+{
+    objPtr->typePtr = &tclBignumType;
+    PACK_BIGNUM(*bignumValue, objPtr);
+
+    /*
+     * Clear the mp_int value.
+     * Don't call mp_clear() because it would free the digit array
+     * we just packed into the Tcl_Obj.
+     */
+
+    bignumValue->dp = NULL;
+    bignumValue->alloc = bignumValue->used = 0;
+    bignumValue->sign = MP_NEG;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetNumberFromObj --
+ *
+ * Results:
+ *
+ * Side effects:
+ *
+ *----------------------------------------------------------------------
+ */
+
+int TclGetNumberFromObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr,
+    ClientData *clientDataPtr,
+    int *typePtr)
+{
+    do {
+	if (objPtr->typePtr == &tclDoubleType) {
+	    if (TclIsNaN(objPtr->internalRep.doubleValue)) {
+		*typePtr = TCL_NUMBER_NAN;
+	    } else {
+		*typePtr = TCL_NUMBER_DOUBLE;
+	    }
+	    *clientDataPtr = &(objPtr->internalRep.doubleValue);
+	    return TCL_OK;
+	}
+	if (objPtr->typePtr == &tclIntType) {
+	    *typePtr = TCL_NUMBER_LONG;
+	    *clientDataPtr = &(objPtr->internalRep.longValue);
+	    return TCL_OK;
+	}
+#ifndef NO_WIDE_TYPE
+	if (objPtr->typePtr == &tclWideIntType) {
+	    *typePtr = TCL_NUMBER_WIDE;
+	    *clientDataPtr = &(objPtr->internalRep.wideValue);
+	    return TCL_OK;
+	}
+#endif
+	if (objPtr->typePtr == &tclBignumType) {
+	    static Tcl_ThreadDataKey bignumKey;
+	    mp_int *bigPtr = Tcl_GetThreadData(&bignumKey,
+		    (int) sizeof(mp_int));
+	    UNPACK_BIGNUM( objPtr, *bigPtr );
+	    *typePtr = TCL_NUMBER_BIG;
+	    *clientDataPtr = bigPtr;
+	    return TCL_OK;
+	}
+    } while (TCL_OK ==
+	    TclParseNumber(interp, objPtr, "number", NULL, -1, NULL, 0));
+    return TCL_ERROR;
 }
 
 /*
@@ -2977,12 +3584,12 @@ Tcl_GetWideIntFromObj(interp, objPtr, wideIntPtr)
  *
  * Tcl_DbIncrRefCount --
  *
- *	This procedure is normally called when debugging: i.e., when
- *	TCL_MEM_DEBUG is defined. This checks to see whether or not
- *	the memory has been freed before incrementing the ref count.
+ *	This function is normally called when debugging: i.e., when
+ *	TCL_MEM_DEBUG is defined. This checks to see whether or not the memory
+ *	has been freed before incrementing the ref count.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just increments
- *	the reference count of the object.
+ *	When TCL_MEM_DEBUG is not defined, this function just increments the
+ *	reference count of the object.
  *
  * Results:
  *	None.
@@ -2994,20 +3601,45 @@ Tcl_GetWideIntFromObj(interp, objPtr, wideIntPtr)
  */
 
 void
-Tcl_DbIncrRefCount(objPtr, file, line)
-    register Tcl_Obj *objPtr;	/* The object we are registering a
-				 * reference to. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbIncrRefCount(
+    register Tcl_Obj *objPtr,	/* The object we are registering a reference
+				 * to. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
 #ifdef TCL_MEM_DEBUG
     if (objPtr->refCount == 0x61616161) {
 	fprintf(stderr, "file = %s, line = %d\n", file, line);
 	fflush(stderr);
-	panic("Trying to increment refCount of previously disposed object.");
+	Tcl_Panic("incrementing refCount of previously disposed object");
     }
+
+# ifdef TCL_THREADS
+    /*
+     * Check to make sure that the Tcl_Obj was allocated by the current
+     * thread. Don't do this check when shutting down since thread local
+     * storage can be finalized before the last Tcl_Obj is freed.
+     */
+
+    if (!TclInExit()) {
+	Tcl_HashTable *tablePtr;
+	Tcl_HashEntry *hPtr;
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	tablePtr = tsdPtr->objThreadMap;
+	if (!tablePtr) {
+	    Tcl_Panic("object table not initialized");
+	}
+	hPtr = Tcl_FindHashEntry(tablePtr, (char *) objPtr);
+	if (!hPtr) {
+	    Tcl_Panic("%s%s",
+		    "Trying to incr ref count of "
+		    "Tcl_Obj allocated in another thread");
+	}
+    }
+# endif
 #endif
     ++(objPtr)->refCount;
 }
@@ -3017,12 +3649,12 @@ Tcl_DbIncrRefCount(objPtr, file, line)
  *
  * Tcl_DbDecrRefCount --
  *
- *	This procedure is normally called when debugging: i.e., when
- *	TCL_MEM_DEBUG is defined. This checks to see whether or not
- *	the memory has been freed before decrementing the ref count.
+ *	This function is normally called when debugging: i.e., when
+ *	TCL_MEM_DEBUG is defined. This checks to see whether or not the memory
+ *	has been freed before decrementing the ref count.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just decrements
- *	the reference count of the object.
+ *	When TCL_MEM_DEBUG is not defined, this function just decrements the
+ *	reference count of the object.
  *
  * Results:
  *	None.
@@ -3034,20 +3666,59 @@ Tcl_DbIncrRefCount(objPtr, file, line)
  */
 
 void
-Tcl_DbDecrRefCount(objPtr, file, line)
-    register Tcl_Obj *objPtr;	/* The object we are releasing a reference
+Tcl_DbDecrRefCount(
+    register Tcl_Obj *objPtr,	/* The object we are releasing a reference
 				 * to. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
 #ifdef TCL_MEM_DEBUG
     if (objPtr->refCount == 0x61616161) {
 	fprintf(stderr, "file = %s, line = %d\n", file, line);
 	fflush(stderr);
-	panic("Trying to decrement refCount of previously disposed object.");
+	Tcl_Panic("decrementing refCount of previously disposed object");
     }
+
+# ifdef TCL_THREADS
+    /*
+     * Check to make sure that the Tcl_Obj was allocated by the current
+     * thread. Don't do this check when shutting down since thread local
+     * storage can be finalized before the last Tcl_Obj is freed.
+     */
+
+    if (!TclInExit()) {
+	Tcl_HashTable *tablePtr;
+	Tcl_HashEntry *hPtr;
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+
+	tablePtr = tsdPtr->objThreadMap;
+	if (!tablePtr) {
+	    Tcl_Panic("object table not initialized");
+	}
+	hPtr = Tcl_FindHashEntry(tablePtr, (char *) objPtr);
+	if (!hPtr) {
+	    Tcl_Panic("%s%s",
+		    "Trying to decr ref count of "
+		    "Tcl_Obj allocated in another thread");
+	}
+
+	/*
+	 * If the Tcl_Obj is going to be deleted, remove the entry.
+	 */
+
+	if ((objPtr->refCount - 1) <= 0) {
+	    ObjData *objData = Tcl_GetHashValue(hPtr);
+
+	    if (objData != NULL) {
+		ckfree((char *) objData);
+	    }
+
+	    Tcl_DeleteHashEntry(hPtr);
+	}
+    }
+# endif
 #endif
     if (--(objPtr)->refCount <= 0) {
 	TclFreeObj(objPtr);
@@ -3059,12 +3730,12 @@ Tcl_DbDecrRefCount(objPtr, file, line)
  *
  * Tcl_DbIsShared --
  *
- *	This procedure is normally called when debugging: i.e., when
- *	TCL_MEM_DEBUG is defined. It tests whether the object has a ref
- *	count greater than one.
+ *	This function is normally called when debugging: i.e., when
+ *	TCL_MEM_DEBUG is defined. It tests whether the object has a ref count
+ *	greater than one.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just tests
- *	if the object has a ref count greater than one.
+ *	When TCL_MEM_DEBUG is not defined, this function just tests if the
+ *	object has a ref count greater than one.
  *
  * Results:
  *	None.
@@ -3076,20 +3747,45 @@ Tcl_DbDecrRefCount(objPtr, file, line)
  */
 
 int
-Tcl_DbIsShared(objPtr, file, line)
-    register Tcl_Obj *objPtr;	/* The object to test for being shared. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+Tcl_DbIsShared(
+    register Tcl_Obj *objPtr,	/* The object to test for being shared. */
+    CONST char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
 #ifdef TCL_MEM_DEBUG
     if (objPtr->refCount == 0x61616161) {
 	fprintf(stderr, "file = %s, line = %d\n", file, line);
 	fflush(stderr);
-	panic("Trying to check whether previously disposed object is shared.");
+	Tcl_Panic("checking whether previously disposed object is shared");
+    }
+
+# ifdef TCL_THREADS
+    /*
+     * Check to make sure that the Tcl_Obj was allocated by the current
+     * thread. Don't do this check when shutting down since thread local
+     * storage can be finalized before the last Tcl_Obj is freed.
+     */
+
+    if (!TclInExit()) {
+	Tcl_HashTable *tablePtr;
+	Tcl_HashEntry *hPtr;
+	ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+	tablePtr = tsdPtr->objThreadMap;
+	if (!tablePtr) {
+	    Tcl_Panic("object table not initialized");
+	}
+	hPtr = Tcl_FindHashEntry(tablePtr, (char *) objPtr);
+	if (!hPtr) {
+	    Tcl_Panic("%s%s",
+		    "Trying to check shared status of"
+		    "Tcl_Obj allocated in another thread");
+	}
     }
+# endif
 #endif
+
 #ifdef TCL_COMPILE_STATS
     Tcl_MutexLock(&tclObjMutex);
     if ((objPtr)->refCount <= 1) {
@@ -3101,6 +3797,7 @@ Tcl_DbIsShared(objPtr, file, line)
     }
     Tcl_MutexUnlock(&tclObjMutex);
 #endif
+
     return ((objPtr)->refCount > 1);
 }
 
@@ -3109,8 +3806,8 @@ Tcl_DbIsShared(objPtr, file, line)
  *
  * Tcl_InitObjHashTable --
  *
- *	Given storage for a hash table, set up the fields to prepare
- *	the hash table for use, the keys are Tcl_Obj *.
+ *	Given storage for a hash table, set up the fields to prepare the hash
+ *	table for use, the keys are Tcl_Obj *.
  *
  * Results:
  *	None.
@@ -3123,9 +3820,10 @@ Tcl_DbIsShared(objPtr, file, line)
  */
 
 void
-Tcl_InitObjHashTable(tablePtr)
-    register Tcl_HashTable *tablePtr;	/* Pointer to table record, which
-					 * is supplied by the caller. */
+Tcl_InitObjHashTable(
+    register Tcl_HashTable *tablePtr)
+				/* Pointer to table record, which is supplied
+				 * by the caller. */
 {
     Tcl_InitCustomHashTable(tablePtr, TCL_CUSTOM_PTR_KEYS,
 	    &tclObjHashKeyType);
@@ -3148,16 +3846,17 @@ Tcl_InitObjHashTable(tablePtr)
  */
 
 static Tcl_HashEntry *
-AllocObjEntry(tablePtr, keyPtr)
-    Tcl_HashTable *tablePtr;	/* Hash table. */
-    VOID *keyPtr;		/* Key to store in the hash table entry. */
+AllocObjEntry(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    void *keyPtr)		/* Key to store in the hash table entry. */
 {
     Tcl_Obj *objPtr = (Tcl_Obj *) keyPtr;
     Tcl_HashEntry *hPtr;
 
     hPtr = (Tcl_HashEntry *) ckalloc((unsigned) (sizeof(Tcl_HashEntry)));
     hPtr->key.oneWordValue = (char *) objPtr;
-    Tcl_IncrRefCount (objPtr);
+    Tcl_IncrRefCount(objPtr);
+    hPtr->clientData = NULL;
 
     return hPtr;
 }
@@ -3165,13 +3864,13 @@ AllocObjEntry(tablePtr, keyPtr)
 /*
  *----------------------------------------------------------------------
  *
- * CompareObjKeys --
+ * TclCompareObjKeys --
  *
  *	Compares two Tcl_Obj * keys.
  *
  * Results:
- *	The return value is 0 if they are different and 1 if they are
- *	the same.
+ *	The return value is 0 if they are different and 1 if they are the
+ *	same.
  *
  * Side effects:
  *	None.
@@ -3179,10 +3878,10 @@ AllocObjEntry(tablePtr, keyPtr)
  *----------------------------------------------------------------------
  */
 
-static int
-CompareObjKeys(keyPtr, hPtr)
-    VOID *keyPtr;		/* New key to compare. */
-    Tcl_HashEntry *hPtr;		/* Existing key to compare. */
+int
+TclCompareObjKeys(
+    void *keyPtr,		/* New key to compare. */
+    Tcl_HashEntry *hPtr)	/* Existing key to compare. */
 {
     Tcl_Obj *objPtr1 = (Tcl_Obj *) keyPtr;
     Tcl_Obj *objPtr2 = (Tcl_Obj *) hPtr->key.oneWordValue;
@@ -3192,6 +3891,7 @@ CompareObjKeys(keyPtr, hPtr)
     /*
      * If the object pointers are the same then they match.
      */
+
     if (objPtr1 == objPtr2) {
 	return 1;
     }
@@ -3200,14 +3900,16 @@ CompareObjKeys(keyPtr, hPtr)
      * Don't use Tcl_GetStringFromObj as it would prevent l1 and l2 being
      * in a register.
      */
+
     p1 = TclGetString(objPtr1);
     l1 = objPtr1->length;
     p2 = TclGetString(objPtr2);
     l2 = objPtr2->length;
-    
+
     /*
      * Only compare if the string representations are of the same length.
      */
+
     if (l1 == l2) {
 	for (;; p1++, p2++, l1--) {
 	    if (*p1 != *p2) {
@@ -3225,7 +3927,7 @@ CompareObjKeys(keyPtr, hPtr)
 /*
  *----------------------------------------------------------------------
  *
- * FreeObjEntry --
+ * TclFreeObjEntry --
  *
  *	Frees space for a Tcl_HashEntry containing the Tcl_Obj * key.
  *
@@ -3238,27 +3940,27 @@ CompareObjKeys(keyPtr, hPtr)
  *----------------------------------------------------------------------
  */
 
-static void
-FreeObjEntry(hPtr)
-    Tcl_HashEntry *hPtr;	/* Hash entry to free. */
+void
+TclFreeObjEntry(
+    Tcl_HashEntry *hPtr)	/* Hash entry to free. */
 {
     Tcl_Obj *objPtr = (Tcl_Obj *) hPtr->key.oneWordValue;
 
-    Tcl_DecrRefCount (objPtr);
-    ckfree ((char *) hPtr);
+    Tcl_DecrRefCount(objPtr);
+    ckfree((char *) hPtr);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * HashObjKey --
+ * TclHashObjKey --
  *
  *	Compute a one-word summary of the string representation of the
  *	Tcl_Obj, which can be used to generate a hash index.
  *
  * Results:
- *	The return value is a one-word summary of the information in
- *	the string representation of the Tcl_Obj.
+ *	The return value is a one-word summary of the information in the
+ *	string representation of the Tcl_Obj.
  *
  * Side effects:
  *	None.
@@ -3266,36 +3968,35 @@ FreeObjEntry(hPtr)
  *----------------------------------------------------------------------
  */
 
-static unsigned int
-HashObjKey(tablePtr, keyPtr)
-    Tcl_HashTable *tablePtr;	/* Hash table. */
-    VOID *keyPtr;		/* Key from which to compute hash value. */
+unsigned int
+TclHashObjKey(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    void *keyPtr)		/* Key from which to compute hash value. */
 {
     Tcl_Obj *objPtr = (Tcl_Obj *) keyPtr;
     CONST char *string = TclGetString(objPtr);
     int length = objPtr->length;
-    unsigned int result;
+    unsigned int result = 0;
     int i;
 
     /*
-     * I tried a zillion different hash functions and asked many other
-     * people for advice.  Many people had their own favorite functions,
-     * all different, but no-one had much idea why they were good ones.
-     * I chose the one below (multiply by 9 and add new character)
-     * because of the following reasons:
+     * I tried a zillion different hash functions and asked many other people
+     * for advice. Many people had their own favorite functions, all
+     * different, but no-one had much idea why they were good ones. I chose
+     * the one below (multiply by 9 and add new character) because of the
+     * following reasons:
      *
-     * 1. Multiplying by 10 is perfect for keys that are decimal strings,
-     *    and multiplying by 9 is just about as good.
-     * 2. Times-9 is (shift-left-3) plus (old).  This means that each
-     *    character's bits hang around in the low-order bits of the
-     *    hash value for ever, plus they spread fairly rapidly up to
-     *    the high-order bits to fill out the hash value.  This seems
-     *    works well both for decimal and non-decimal strings.
+     * 1. Multiplying by 10 is perfect for keys that are decimal strings, and
+     *	  multiplying by 9 is just about as good.
+     * 2. Times-9 is (shift-left-3) plus (old). This means that each
+     *	  character's bits hang around in the low-order bits of the hash value
+     *	  for ever, plus they spread fairly rapidly up to the high-order bits
+     *	  to fill out the hash value. This seems works well both for decimal
+     *	  and *non-decimal strings.
      */
 
-    result = 0;
     for (i=0 ; i<length ; i++) {
-	result += (result<<3) + string[i];
+	result += (result << 3) + string[i];
     }
     return result;
 }
@@ -3305,111 +4006,78 @@ HashObjKey(tablePtr, keyPtr)
  *
  * Tcl_GetCommandFromObj --
  *
- *      Returns the command specified by the name in a Tcl_Obj.
+ *	Returns the command specified by the name in a Tcl_Obj.
  *
  * Results:
- *	Returns a token for the command if it is found. Otherwise, if it
- *	can't be found or there is an error, returns NULL.
+ *	Returns a token for the command if it is found. Otherwise, if it can't
+ *	be found or there is an error, returns NULL.
  *
  * Side effects:
- *      May update the internal representation for the object, caching
- *      the command reference so that the next time this procedure is
- *	called with the same object, the command can be found quickly.
+ *	May update the internal representation for the object, caching the
+ *	command reference so that the next time this function is called with
+ *	the same object, the command can be found quickly.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Command
-Tcl_GetCommandFromObj(interp, objPtr)
-    Tcl_Interp *interp;		/* The interpreter in which to resolve the
+Tcl_GetCommandFromObj(
+    Tcl_Interp *interp,		/* The interpreter in which to resolve the
 				 * command and to report errors. */
-    register Tcl_Obj *objPtr;	/* The object containing the command's
-				 * name. If the name starts with "::", will
-				 * be looked up in global namespace. Else,
-				 * looked up first in the current namespace,
-				 * then in global namespace. */
+    register Tcl_Obj *objPtr)	/* The object containing the command's name.
+				 * If the name starts with "::", will be
+				 * looked up in global namespace. Else, looked
+				 * up first in the current namespace, then in
+				 * global namespace. */
 {
-    Interp *iPtr = (Interp *) interp;
     register ResolvedCmdName *resPtr;
     register Command *cmdPtr;
-    Namespace *currNsPtr;
+    Namespace *refNsPtr;
     int result;
-    CallFrame *savedFramePtr;
-    char *name;
-
-    /*
-     * If the variable name is fully qualified, do as if the lookup were
-     * done from the global namespace; this helps avoid repeated lookups 
-     * of fully qualified names. It costs close to nothing, and may be very
-     * helpful for OO applications which pass along a command name ("this"),
-     * [Patch 456668]
-     */
-
-    savedFramePtr = iPtr->varFramePtr;
-    name = Tcl_GetString(objPtr);
-    if ((*name++ == ':') && (*name == ':')) {
-	iPtr->varFramePtr = NULL;
-    }
 
     /*
      * Get the internal representation, converting to a command type if
-     * needed. The internal representation is a ResolvedCmdName that points
-     * to the actual command.
+     * needed. The internal representation is a ResolvedCmdName that points to
+     * the actual command.
+     *
+     * Check the context namespace and the namespace epoch of the resolved
+     * symbol to make sure that it is fresh. Note that we verify that the
+     * namespace id of the context namespace is the same as the one we cached;
+     * this insures that the namespace wasn't deleted and a new one created at
+     * the same address with the same command epoch. Note that fully qualified
+     * names have a NULL refNsPtr, these checks needn't be made.
+     *
+     * Check also that the command's epoch is up to date, and that the command
+     * is not deleted.
+     *
+     * If any check fails, then force another conversion to the command type,
+     * to discard the old rep and create a new one.      
      */
-    
-    if (objPtr->typePtr != &tclCmdNameType) {
-        result = tclCmdNameType.setFromAnyProc(interp, objPtr);
-        if (result != TCL_OK) {
-	    iPtr->varFramePtr = savedFramePtr;
-            return (Tcl_Command) NULL;
-        }
-    }
-    resPtr = (ResolvedCmdName *) objPtr->internalRep.twoPtrValue.ptr1;
 
-    /*
-     * Get the current namespace.
-     */
-    
-    if (iPtr->varFramePtr != NULL) {
-	currNsPtr = iPtr->varFramePtr->nsPtr;
-    } else {
-	currNsPtr = iPtr->globalNsPtr;
+    resPtr = (ResolvedCmdName *) objPtr->internalRep.twoPtrValue.ptr1;
+    if ((objPtr->typePtr != &tclCmdNameType)
+	    || (resPtr == NULL)
+	    || (cmdPtr = resPtr->cmdPtr, cmdPtr->cmdEpoch != resPtr->cmdEpoch)
+	    || (cmdPtr->flags & CMD_IS_DELETED)
+	    || (interp != cmdPtr->nsPtr->interp)
+	    || (cmdPtr->nsPtr->flags & 	NS_DYING)
+	    || ((resPtr->refNsPtr != NULL) && 
+		     (((refNsPtr = (Namespace *) TclGetCurrentNamespace(interp))
+			     != resPtr->refNsPtr)
+		     || (resPtr->refNsId != refNsPtr->nsId)
+		     || (resPtr->refNsCmdEpoch != refNsPtr->cmdRefEpoch)))
+	) {
+	
+	result = tclCmdNameType.setFromAnyProc(interp, objPtr);
+	
+	resPtr = (ResolvedCmdName *) objPtr->internalRep.twoPtrValue.ptr1;
+	if ((result == TCL_OK) && resPtr) {
+	    cmdPtr = resPtr->cmdPtr;
+	} else {
+	    cmdPtr = NULL;
+	}
     }
-
-    /*
-     * Check the context namespace and the namespace epoch of the resolved
-     * symbol to make sure that it is fresh. If not, then force another
-     * conversion to the command type, to discard the old rep and create a
-     * new one. Note that we verify that the namespace id of the context
-     * namespace is the same as the one we cached; this insures that the
-     * namespace wasn't deleted and a new one created at the same address
-     * with the same command epoch.
-     */
     
-    cmdPtr = NULL;
-    if ((resPtr != NULL)
-	    && (resPtr->refNsPtr == currNsPtr)
-	    && (resPtr->refNsId == currNsPtr->nsId)
-	    && (resPtr->refNsCmdEpoch == currNsPtr->cmdRefEpoch)) {
-        cmdPtr = resPtr->cmdPtr;
-        if (cmdPtr->cmdEpoch != resPtr->cmdEpoch
-		|| (cmdPtr->flags & CMD_IS_DELETED)) {
-            cmdPtr = NULL;
-        }
-    }
-
-    if (cmdPtr == NULL) {
-        result = tclCmdNameType.setFromAnyProc(interp, objPtr);
-        if (result != TCL_OK) {
-	    iPtr->varFramePtr = savedFramePtr;
-            return (Tcl_Command) NULL;
-        }
-        resPtr = (ResolvedCmdName *) objPtr->internalRep.twoPtrValue.ptr1;
-        if (resPtr != NULL) {
-            cmdPtr = resPtr->cmdPtr;
-        }
-    }
-    iPtr->varFramePtr = savedFramePtr;
     return (Tcl_Command) cmdPtr;
 }
 
@@ -3426,54 +4094,59 @@ Tcl_GetCommandFromObj(interp, objPtr)
  *
  * Side effects:
  *	The object's old internal rep is freed. It's string rep is not
- *	changed. The refcount in the Command structure is incremented to
- *	keep it from being freed if the command is later deleted until
+ *	changed. The refcount in the Command structure is incremented to keep
+ *	it from being freed if the command is later deleted until
  *	TclExecuteByteCode has a chance to recognize that it was deleted.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclSetCmdNameObj(interp, objPtr, cmdPtr)
-    Tcl_Interp *interp;		/* Points to interpreter containing command
+TclSetCmdNameObj(
+    Tcl_Interp *interp,		/* Points to interpreter containing command
 				 * that should be cached in objPtr. */
-    register Tcl_Obj *objPtr;	/* Points to Tcl object to be changed to
-				 * a CmdName object. */
-    Command *cmdPtr;		/* Points to Command structure that the
+    register Tcl_Obj *objPtr,	/* Points to Tcl object to be changed to a
+				 * CmdName object. */
+    Command *cmdPtr)		/* Points to Command structure that the
 				 * CmdName object should refer to. */
 {
     Interp *iPtr = (Interp *) interp;
     register ResolvedCmdName *resPtr;
-    Tcl_ObjType *oldTypePtr = objPtr->typePtr;
     register Namespace *currNsPtr;
+    char *name;
 
-    if (oldTypePtr == &tclCmdNameType) {
+    if (objPtr->typePtr == &tclCmdNameType) {
 	return;
     }
-    
-    /*
-     * Get the current namespace.
-     */
-    
-    if (iPtr->varFramePtr != NULL) {
-	currNsPtr = iPtr->varFramePtr->nsPtr;
-    } else {
-	currNsPtr = iPtr->globalNsPtr;
-    }
-    
+
     cmdPtr->refCount++;
     resPtr = (ResolvedCmdName *) ckalloc(sizeof(ResolvedCmdName));
     resPtr->cmdPtr = cmdPtr;
-    resPtr->refNsPtr = currNsPtr;
-    resPtr->refNsId  = currNsPtr->nsId;
-    resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
     resPtr->cmdEpoch = cmdPtr->cmdEpoch;
     resPtr->refCount = 1;
-    
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
+
+    name = TclGetString(objPtr);
+    if ((*name++ == ':') && (*name == ':')) {
+	/*
+	 * The name is fully qualified: set the referring namespace to
+	 * NULL. 
+	 */
+
+	resPtr->refNsPtr = NULL;
+    } else {
+	/*
+	 * Get the current namespace.
+	 */
+
+	currNsPtr = iPtr->varFramePtr->nsPtr;
+	
+	resPtr->refNsPtr = currNsPtr;
+	resPtr->refNsId = currNsPtr->nsId;
+	resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
     }
-    objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) resPtr;
+
+    TclFreeIntRep(objPtr);
+    objPtr->internalRep.twoPtrValue.ptr1 = (void *) resPtr;
     objPtr->internalRep.twoPtrValue.ptr2 = NULL;
     objPtr->typePtr = &tclCmdNameType;
 }
@@ -3491,17 +4164,17 @@ TclSetCmdNameObj(interp, objPtr, cmdPtr)
  *
  * Side effects:
  *	Decrements the ref count of any cached ResolvedCmdName structure
- *	pointed to by the cmdName's internal representation. If this is 
- *	the last use of the ResolvedCmdName, it is freed. This in turn
- *	decrements the ref count of the Command structure pointed to by 
- *	the ResolvedSymbol, which may free the Command structure.
+ *	pointed to by the cmdName's internal representation. If this is the
+ *	last use of the ResolvedCmdName, it is freed. This in turn decrements
+ *	the ref count of the Command structure pointed to by the
+ *	ResolvedSymbol, which may free the Command structure.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeCmdNameInternalRep(objPtr)
-    register Tcl_Obj *objPtr;	/* CmdName object with internal
+FreeCmdNameInternalRep(
+    register Tcl_Obj *objPtr)	/* CmdName object with internal
 				 * representation to free. */
 {
     register ResolvedCmdName *resPtr =
@@ -3509,23 +4182,24 @@ FreeCmdNameInternalRep(objPtr)
 
     if (resPtr != NULL) {
 	/*
-	 * Decrement the reference count of the ResolvedCmdName structure.
-	 * If there are no more uses, free the ResolvedCmdName structure.
+	 * Decrement the reference count of the ResolvedCmdName structure. If
+	 * there are no more uses, free the ResolvedCmdName structure.
 	 */
-    
-        resPtr->refCount--;
-        if (resPtr->refCount == 0) {
-            /*
-	     * Now free the cached command, unless it is still in its
-             * hash table or if there are other references to it
-             * from other cmdName objects.
+
+	resPtr->refCount--;
+	if (resPtr->refCount == 0) {
+	    /*
+	     * Now free the cached command, unless it is still in its hash
+	     * table or if there are other references to it from other cmdName
+	     * objects.
 	     */
-	    
-            Command *cmdPtr = resPtr->cmdPtr;
-            TclCleanupCommand(cmdPtr);
-            ckfree((char *) resPtr);
-        }
+
+	    Command *cmdPtr = resPtr->cmdPtr;
+	    TclCleanupCommandMacro(cmdPtr);
+	    ckfree((char *) resPtr);
+	}
     }
+    objPtr->typePtr = NULL;
 }
 
 /*
@@ -3533,33 +4207,33 @@ FreeCmdNameInternalRep(objPtr)
  *
  * DupCmdNameInternalRep --
  *
- *	Initialize the internal representation of an cmdName Tcl_Obj to a
- *	copy of the internal representation of an existing cmdName object. 
+ *	Initialize the internal representation of an cmdName Tcl_Obj to a copy
+ *	of the internal representation of an existing cmdName object.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	"copyPtr"s internal rep is set to point to the ResolvedCmdName
- *	structure corresponding to "srcPtr"s internal rep. Increments the
- *	ref count of the ResolvedCmdName structure pointed to by the
- *	cmdName's internal representation.
+ *	structure corresponding to "srcPtr"s internal rep. Increments the ref
+ *	count of the ResolvedCmdName structure pointed to by the cmdName's
+ *	internal representation.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-DupCmdNameInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;		/* Object with internal rep to copy. */
-    register Tcl_Obj *copyPtr;	/* Object with internal rep to set. */
+DupCmdNameInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    register Tcl_Obj *copyPtr)	/* Object with internal rep to set. */
 {
-    register ResolvedCmdName *resPtr =
-        (ResolvedCmdName *) srcPtr->internalRep.twoPtrValue.ptr1;
+    register ResolvedCmdName *resPtr = (ResolvedCmdName *)
+	    srcPtr->internalRep.twoPtrValue.ptr1;
 
-    copyPtr->internalRep.twoPtrValue.ptr1 = (VOID *) resPtr;
+    copyPtr->internalRep.twoPtrValue.ptr1 = (void *) resPtr;
     copyPtr->internalRep.twoPtrValue.ptr2 = NULL;
     if (resPtr != NULL) {
-        resPtr->refCount++;
+	resPtr->refCount++;
     }
     copyPtr->typePtr = &tclCmdNameType;
 }
@@ -3577,22 +4251,21 @@ DupCmdNameInternalRep(srcPtr, copyPtr)
  *
  * Side effects:
  *	A pointer to a ResolvedCmdName structure that holds a cached pointer
- *	to the command with a name that matches objPtr's string rep is
- *	stored as objPtr's internal representation. This ResolvedCmdName
- *	pointer will be NULL if no matching command was found. The ref count
- *	of the cached Command's structure (if any) is also incremented.
+ *	to the command with a name that matches objPtr's string rep is stored
+ *	as objPtr's internal representation. This ResolvedCmdName pointer will
+ *	be NULL if no matching command was found. The ref count of the cached
+ *	Command's structure (if any) is also incremented.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetCmdNameFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
+SetCmdNameFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
 {
     Interp *iPtr = (Interp *) interp;
     char *name;
-    Tcl_Command cmd;
     register Command *cmdPtr;
     Namespace *currNsPtr;
     register ResolvedCmdName *resPtr;
@@ -3602,15 +4275,6 @@ SetCmdNameFromAny(interp, objPtr)
     }
 
     /*
-     * Get "objPtr"s string representation. Make it up-to-date if necessary.
-     */
-
-    name = objPtr->bytes;
-    if (name == NULL) {
-	name = Tcl_GetString(objPtr);
-    }
-
-    /*
      * Find the Command structure, if any, that describes the command called
      * "name". Build a ResolvedCmdName that holds a cached pointer to this
      * Command, and bump the reference count in the referenced Command
@@ -3618,47 +4282,62 @@ SetCmdNameFromAny(interp, objPtr)
      * referenced from a CmdName object.
      */
 
-    cmd = Tcl_FindCommand(interp, name, (Tcl_Namespace *) NULL,
-	    /*flags*/ 0);
-    cmdPtr = (Command *) cmd;
-    if (cmdPtr != NULL) {
-	/*
-	 * Get the current namespace.
-	 */
-	
-	if (iPtr->varFramePtr != NULL) {
-	    currNsPtr = iPtr->varFramePtr->nsPtr;
-	} else {
-	    currNsPtr = iPtr->globalNsPtr;
-	}
-	
-	cmdPtr->refCount++;
-        resPtr = (ResolvedCmdName *) ckalloc(sizeof(ResolvedCmdName));
-        resPtr->cmdPtr        = cmdPtr;
-        resPtr->refNsPtr      = currNsPtr;
-        resPtr->refNsId       = currNsPtr->nsId;
-        resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
-        resPtr->cmdEpoch      = cmdPtr->cmdEpoch;
-        resPtr->refCount      = 1;
-    } else {
-	resPtr = NULL;	/* no command named "name" was found */
-    }
+    name = TclGetString(objPtr);
+    cmdPtr = (Command *) Tcl_FindCommand(interp, name, /*ns*/ NULL, /*flags*/ 0);
 
     /*
-     * Free the old internalRep before setting the new one. We do this as
-     * late as possible to allow the conversion code, in particular
-     * GetStringFromObj, to use that old internalRep. If no Command
-     * structure was found, leave NULL as the cached value.
+     * Free the old internalRep before setting the new one. Do this after
+     * getting the string rep to allow the conversion code (in particular,
+     * Tcl_GetStringFromObj) to use that old internalRep.
      */
 
-    if ((objPtr->typePtr != NULL)
-	    && (objPtr->typePtr->freeIntRepProc != NULL)) {
-	objPtr->typePtr->freeIntRepProc(objPtr);
+    if (cmdPtr) {
+	cmdPtr->refCount++;
+	resPtr = (ResolvedCmdName *) objPtr->internalRep.twoPtrValue.ptr1;
+	if ((objPtr->typePtr == &tclCmdNameType)
+		&& resPtr && (resPtr->refCount == 1)) {
+	    /*
+	     * Reuse the old ResolvedCmdName struct instead of freeing it
+	     */
+	    
+	    Command *oldCmdPtr = resPtr->cmdPtr;
+	    if (--oldCmdPtr->refCount == 0) {
+		TclCleanupCommandMacro(oldCmdPtr);
+	    }
+	} else {
+	    TclFreeIntRep(objPtr);
+	    resPtr = (ResolvedCmdName *) ckalloc(sizeof(ResolvedCmdName));
+	    resPtr->refCount = 1;
+	    objPtr->internalRep.twoPtrValue.ptr1 = (void *) resPtr;
+	    objPtr->internalRep.twoPtrValue.ptr2 = NULL;
+	    objPtr->typePtr = &tclCmdNameType;
+	}
+	resPtr->cmdPtr = cmdPtr;
+	resPtr->cmdEpoch = cmdPtr->cmdEpoch;
+	if ((*name++ == ':') && (*name == ':')) {
+	    /*
+	     * The name is fully qualified: set the referring namespace to 
+	     * NULL. 
+	     */
+
+	    resPtr->refNsPtr = NULL;
+	} else {
+	    /*
+	     * Get the current namespace.
+	     */
+
+	    currNsPtr = iPtr->varFramePtr->nsPtr;
+	    
+	    resPtr->refNsPtr = currNsPtr;
+	    resPtr->refNsId = currNsPtr->nsId;
+	    resPtr->refNsCmdEpoch = currNsPtr->cmdRefEpoch;
+	}
+    } else {
+	TclFreeIntRep(objPtr);
+	objPtr->internalRep.twoPtrValue.ptr1 = NULL;
+	objPtr->internalRep.twoPtrValue.ptr2 = NULL;
+	objPtr->typePtr = &tclCmdNameType;
     }
-    
-    objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) resPtr;
-    objPtr->internalRep.twoPtrValue.ptr2 = NULL;
-    objPtr->typePtr = &tclCmdNameType;
     return TCL_OK;
 }
 
@@ -3669,4 +4348,3 @@ SetCmdNameFromAny(interp, objPtr)
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclPanic.c b/generic/tclPanic.c
index 4614edc..600307e 100644
--- a/generic/tclPanic.c
+++ b/generic/tclPanic.c
@@ -1,43 +1,40 @@
-/* 
+/*
  * tclPanic.c --
  *
- *	Source code for the "Tcl_Panic" library procedure for Tcl;
- *	individual applications will probably call Tcl_SetPanicProc()
- *	to set an application-specific panic procedure.
+ *	Source code for the "Tcl_Panic" library procedure for Tcl; individual
+ *	applications will probably call Tcl_SetPanicProc() to set an
+ *	application-specific panic procedure.
  *
  * Copyright (c) 1988-1993 The Regents of the University of California.
  * Copyright (c) 1994 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * The panicProc variable contains a pointer to an application
- * specific panic procedure.
+ * The panicProc variable contains a pointer to an application specific panic
+ * procedure.
  */
 
 static Tcl_PanicProc *panicProc = NULL;
 
 /*
- * The platformPanicProc variable contains a pointer to a platform
- * specific panic procedure, if any.  ( TclpPanic may be NULL via
- * a macro. )
+ * The platformPanicProc variable contains a pointer to a platform specific
+ * panic procedure, if any. (TclpPanic may be NULL via a macro.)
  */
 
-static Tcl_PanicProc * CONST platformPanicProc = TclpPanic;
-
+static Tcl_PanicProc *CONST platformPanicProc = TclpPanic;
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_SetPanicProc --
  *
- *	Replace the default panic behavior with the specified functiion.
+ *	Replace the default panic behavior with the specified function.
  *
  * Results:
  *	None.
@@ -49,8 +46,8 @@ static Tcl_PanicProc * CONST platformPanicProc = TclpPanic;
  */
 
 void
-Tcl_SetPanicProc(proc)
-    Tcl_PanicProc *proc;
+Tcl_SetPanicProc(
+    Tcl_PanicProc *proc)
 {
     panicProc = proc;
 }
@@ -72,10 +69,10 @@ Tcl_SetPanicProc(proc)
  */
 
 void
-Tcl_PanicVA (format, argList)
-    CONST char *format;		/* Format string, suitable for passing to
+Tcl_PanicVA(
+    CONST char *format,		/* Format string, suitable for passing to
 				 * fprintf. */
-    va_list argList;		/* Variable argument list. */
+    va_list argList)		/* Variable argument list. */
 {
     char *arg1, *arg2, *arg3, *arg4;	/* Additional arguments (variable in
 					 * number) to pass to fprintf. */
@@ -89,7 +86,7 @@ Tcl_PanicVA (format, argList)
     arg6 = va_arg(argList, char *);
     arg7 = va_arg(argList, char *);
     arg8 = va_arg(argList, char *);
-    
+
     if (panicProc != NULL) {
 	(void) (*panicProc)(format, arg1, arg2, arg3, arg4,
 		arg5, arg6, arg7, arg8);
@@ -121,14 +118,23 @@ Tcl_PanicVA (format, argList)
  *----------------------------------------------------------------------
  */
 
-	/* VARARGS ARGSUSED */
+	/* ARGSUSED */
 void
-Tcl_Panic TCL_VARARGS_DEF(CONST char *,arg1)
+Tcl_Panic(
+    CONST char *format,
+    ...)
 {
     va_list argList;
-    CONST char *format;
 
-    format = TCL_VARARGS_START(CONST char *,arg1,argList);
+    va_start(argList, format);
     Tcl_PanicVA(format, argList);
     va_end (argList);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclParse.c b/generic/tclParse.c
index a3f8433..96c2a10 100644
--- a/generic/tclParse.c
+++ b/generic/tclParse.c
@@ -1,61 +1,58 @@
-/* 
+/*
  * tclParse.c --
  *
- *	This file contains procedures that parse Tcl scripts.  They
- *	do so in a general-purpose fashion that can be used for many
- *	different purposes, including compilation, direct execution,
- *	code analysis, etc.  
+ *	This file contains functions that parse Tcl scripts. They do so in a
+ *	general-purpose fashion that can be used for many different purposes,
+ *	including compilation, direct execution, code analysis, etc.
  *
  * Copyright (c) 1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-2000 Ajuba Solutions.
  * Contributions from Don Porter, NIST, 2002. (not subject to US copyright)
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * The following table provides parsing information about each possible
- * 8-bit character.  The table is designed to be referenced with either
- * signed or unsigned characters, so it has 384 entries.  The first 128
- * entries correspond to negative character values, the next 256 correspond
- * to positive character values.  The last 128 entries are identical to the
- * first 128.  The table is always indexed with a 128-byte offset (the 128th
- * entry corresponds to a character value of 0).
- *
- * The macro CHAR_TYPE is used to index into the table and return
- * information about its character argument.  The following return
- * values are defined.
- *
- * TYPE_NORMAL -        All characters that don't have special significance
- *                      to the Tcl parser.
- * TYPE_SPACE -         The character is a whitespace character other
- *                      than newline.
- * TYPE_COMMAND_END -   Character is newline or semicolon.
- * TYPE_SUBS -          Character begins a substitution or has other
- *                      special meaning in ParseTokens: backslash, dollar
- *                      sign, or open bracket.
- * TYPE_QUOTE -         Character is a double quote.
- * TYPE_CLOSE_PAREN -   Character is a right parenthesis.
- * TYPE_CLOSE_BRACK -   Character is a right square bracket.
- * TYPE_BRACE -         Character is a curly brace (either left or right).
+ * The following table provides parsing information about each possible 8-bit
+ * character. The table is designed to be referenced with either signed or
+ * unsigned characters, so it has 384 entries. The first 128 entries
+ * correspond to negative character values, the next 256 correspond to
+ * positive character values. The last 128 entries are identical to the first
+ * 128. The table is always indexed with a 128-byte offset (the 128th entry
+ * corresponds to a character value of 0).
+ *
+ * The macro CHAR_TYPE is used to index into the table and return information
+ * about its character argument. The following return values are defined.
+ *
+ * TYPE_NORMAL -	All characters that don't have special significance to
+ *			the Tcl parser.
+ * TYPE_SPACE -		The character is a whitespace character other than
+ *			newline.
+ * TYPE_COMMAND_END -	Character is newline or semicolon.
+ * TYPE_SUBS -		Character begins a substitution or has other special
+ *			meaning in ParseTokens: backslash, dollar sign, or
+ *			open bracket.
+ * TYPE_QUOTE -		Character is a double quote.
+ * TYPE_CLOSE_PAREN -	Character is a right parenthesis.
+ * TYPE_CLOSE_BRACK -	Character is a right square bracket.
+ * TYPE_BRACE -		Character is a curly brace (either left or right).
  */
 
-#define TYPE_NORMAL             0
-#define TYPE_SPACE              0x1
-#define TYPE_COMMAND_END        0x2
-#define TYPE_SUBS               0x4
-#define TYPE_QUOTE              0x8
-#define TYPE_CLOSE_PAREN        0x10
-#define TYPE_CLOSE_BRACK        0x20
-#define TYPE_BRACE              0x40
+#define TYPE_NORMAL		0
+#define TYPE_SPACE		0x1
+#define TYPE_COMMAND_END	0x2
+#define TYPE_SUBS		0x4
+#define TYPE_QUOTE		0x8
+#define TYPE_CLOSE_PAREN	0x10
+#define TYPE_CLOSE_BRACK	0x20
+#define TYPE_BRACE		0x40
 
 #define CHAR_TYPE(c) (charTypeTable+128)[(int)(c)]
 
-static CONST char charTypeTable[] = {
+static const char charTypeTable[] = {
     /*
      * Negative character values, from -128 to -1:
      */
@@ -169,96 +166,120 @@ static CONST char charTypeTable[] = {
 };
 
 /*
- * Prototypes for local procedures defined in this file:
+ * Prototypes for local functions defined in this file:
  */
 
-static int		CommandComplete _ANSI_ARGS_((CONST char *script,
-			    int numBytes));
-static int		ParseComment _ANSI_ARGS_((CONST char *src, int numBytes,
-			    Tcl_Parse *parsePtr));
-static int		ParseTokens _ANSI_ARGS_((CONST char *src, int numBytes,
-			    int mask, Tcl_Parse *parsePtr));
+static inline int	CommandComplete(const char *script, int numBytes);
+static int		ParseComment(const char *src, int numBytes,
+			    Tcl_Parse *parsePtr);
+static int		ParseTokens(const char *src, int numBytes, int mask,
+			    int flags, Tcl_Parse *parsePtr);
+static int		ParseWhiteSpace(const char *src, int numBytes,
+			    int *incompletePtr, char *typePtr);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclParseInit --
+ *
+ * 	Initialize the fields of a Tcl_Parse struct.
+ *
+ * Results:
+ * 	None.
+ *
+ * Side effects:
+ * 	The Tcl_Parse struct pointed to by parsePtr gets initialized.
+ *
+ *----------------------------------------------------------------------
+ */
 
+void
+TclParseInit(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting */
+    const char *start,		/* Start of string to be parsed. */
+    int numBytes,		/* Total number of bytes in string. If < 0,
+				 * the script consists of all bytes up to the
+				 * first null character. */
+    Tcl_Parse *parsePtr)	/* Points to struct to initialize */
+{
+    parsePtr->numWords = 0;
+    parsePtr->tokenPtr = parsePtr->staticTokens;
+    parsePtr->numTokens = 0;
+    parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
+    parsePtr->string = start;
+    parsePtr->end = start + numBytes;
+    parsePtr->term = parsePtr->end;
+    parsePtr->interp = interp;
+    parsePtr->incomplete = 0;
+    parsePtr->errorType = TCL_PARSE_SUCCESS;
+}
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_ParseCommand --
  *
- *	Given a string, this procedure parses the first Tcl command
- *	in the string and returns information about the structure of
- *	the command.
+ *	Given a string, this function parses the first Tcl command in the
+ *	string and returns information about the structure of the command.
  *
  * Results:
- *	The return value is TCL_OK if the command was parsed
- *	successfully and TCL_ERROR otherwise.  If an error occurs
- *	and interp isn't NULL then an error message is left in
- *	its result.  On a successful return, parsePtr is filled in
- *	with information about the command that was parsed.
+ *	The return value is TCL_OK if the command was parsed successfully and
+ *	TCL_ERROR otherwise. If an error occurs and interp isn't NULL then an
+ *	error message is left in its result. On a successful return, parsePtr
+ *	is filled in with information about the command that was parsed.
  *
  * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the command, then additional space is
- *	malloc-ed.  If the procedure returns TCL_OK then the caller must
- *	eventually invoke Tcl_FreeParse to release any additional space
- *	that was allocated.
+ *	If there is insufficient space in parsePtr to hold all the information
+ *	about the command, then additional space is malloc-ed. If the function
+ *	returns TCL_OK then the caller must eventually invoke Tcl_FreeParse to
+ *	release any additional space that was allocated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting;
-				 * if NULL, then no error message is
-				 * provided. */
-    CONST char *string;		/* First character of string containing
-				 * one or more Tcl commands. */
-    register int numBytes;	/* Total number of bytes in string.  If < 0,
-				 * the script consists of all bytes up to 
-				 * the first null character. */
-    int nested;			/* Non-zero means this is a nested command:
-				 * close bracket should be considered
-				 * a command terminator. If zero, then close
+Tcl_ParseCommand(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting; if
+				 * NULL, then no error message is provided. */
+    const char *start,		/* First character of string containing one or
+				 * more Tcl commands. */
+    register int numBytes,	/* Total number of bytes in string. If < 0,
+				 * the script consists of all bytes up to the
+				 * first null character. */
+    int nested,			/* Non-zero means this is a nested command:
+				 * close bracket should be considered a
+				 * command terminator. If zero, then close
 				 * bracket has no special meaning. */
-    register Tcl_Parse *parsePtr;
-    				/* Structure to fill in with information
-				 * about the parsed command; any previous
-				 * information in the structure is
-				 * ignored. */
+    register Tcl_Parse *parsePtr)
+    				/* Structure to fill in with information about
+				 * the parsed command; any previous
+				 * information in the structure is ignored. */
 {
-    register CONST char *src;	/* Points to current character
-				 * in the command. */
+    register const char *src;	/* Points to current character in the
+				 * command. */
     char type;			/* Result returned by CHAR_TYPE(*src). */
     Tcl_Token *tokenPtr;	/* Pointer to token being filled in. */
     int wordIndex;		/* Index of word token for current word. */
-    int terminators;		/* CHAR_TYPE bits that indicate the end
-				 * of a command. */
-    CONST char *termPtr;	/* Set by Tcl_ParseBraces/QuotedString to
+    int terminators;		/* CHAR_TYPE bits that indicate the end of a
+				 * command. */
+    const char *termPtr;	/* Set by Tcl_ParseBraces/QuotedString to
 				 * point to char after terminating one. */
     int scanned;
-    
-    if ((string == NULL) && (numBytes!=0)) {
+
+    if ((start == NULL) && (numBytes != 0)) {
 	if (interp != NULL) {
 	    Tcl_SetResult(interp, "can't parse a NULL pointer", TCL_STATIC);
 	}
 	return TCL_ERROR;
     }
     if (numBytes < 0) {
-	numBytes = strlen(string);
+	numBytes = strlen(start);
     }
+    TclParseInit(interp, start, numBytes, parsePtr);
     parsePtr->commentStart = NULL;
     parsePtr->commentSize = 0;
     parsePtr->commandStart = NULL;
     parsePtr->commandSize = 0;
-    parsePtr->numWords = 0;
-    parsePtr->tokenPtr = parsePtr->staticTokens;
-    parsePtr->numTokens = 0;
-    parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
-    parsePtr->string = string;
-    parsePtr->end = string + numBytes;
-    parsePtr->term = parsePtr->end;
-    parsePtr->interp = interp;
-    parsePtr->incomplete = 0;
-    parsePtr->errorType = TCL_PARSE_SUCCESS;
     if (nested != 0) {
 	terminators = TYPE_COMMAND_END | TYPE_CLOSE_BRACK;
     } else {
@@ -270,8 +291,9 @@ Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
      * command.
      */
 
-    scanned = ParseComment(string, numBytes, parsePtr);
-    src = (string + scanned); numBytes -= scanned;
+    scanned = ParseComment(start, numBytes, parsePtr);
+    src = (start + scanned);
+    numBytes -= scanned;
     if (numBytes == 0) {
 	if (nested) {
 	    parsePtr->incomplete = nested;
@@ -279,19 +301,19 @@ Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
     }
 
     /*
-     * The following loop parses the words of the command, one word
-     * in each iteration through the loop.
+     * The following loop parses the words of the command, one word in each
+     * iteration through the loop.
      */
 
     parsePtr->commandStart = src;
     while (1) {
+	int expandWord = 0;
+
 	/*
 	 * Create the token for the word.
 	 */
 
-	if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
+	TclGrowParseTokenArray(parsePtr, 1);
 	wordIndex = parsePtr->numTokens;
 	tokenPtr = &parsePtr->tokenPtr[wordIndex];
 	tokenPtr->type = TCL_TOKEN_WORD;
@@ -301,8 +323,9 @@ Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
 	 * sequence: it should be treated just like white space.
 	 */
 
-	scanned = TclParseWhiteSpace(src, numBytes, parsePtr, &type);
-	src += scanned; numBytes -= scanned;
+	scanned = ParseWhiteSpace(src,numBytes, &parsePtr->incomplete, &type);
+	src += scanned;
+	numBytes -= scanned;
 	if (numBytes == 0) {
 	    parsePtr->term = src;
 	    break;
@@ -317,60 +340,229 @@ Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
 	parsePtr->numWords++;
 
 	/*
-	 * At this point the word can have one of three forms: something
-	 * enclosed in quotes, something enclosed in braces, or an
-	 * unquoted word (anything else).
+	 * At this point the word can have one of four forms: something
+	 * enclosed in quotes, something enclosed in braces, and expanding
+	 * word, or an unquoted word (anything else).
 	 */
 
+    parseWord:
 	if (*src == '"') {
-	    if (Tcl_ParseQuotedString(interp, src, numBytes,
-		    parsePtr, 1, &termPtr) != TCL_OK) {
+	    if (Tcl_ParseQuotedString(interp, src, numBytes, parsePtr, 1,
+		    &termPtr) != TCL_OK) {
 		goto error;
 	    }
-	    src = termPtr; numBytes = parsePtr->end - src;
+	    src = termPtr;
+	    numBytes = parsePtr->end - src;
 	} else if (*src == '{') {
-	    if (Tcl_ParseBraces(interp, src, numBytes,
-		    parsePtr, 1, &termPtr) != TCL_OK) {
+	    int expIdx = wordIndex + 1;
+	    Tcl_Token *expPtr;
+
+	    if (Tcl_ParseBraces(interp, src, numBytes, parsePtr, 1,
+		    &termPtr) != TCL_OK) {
 		goto error;
 	    }
-	    src = termPtr; numBytes = parsePtr->end - src;
+	    src = termPtr;
+	    numBytes = parsePtr->end - src;
+
+	    /*
+	     * Check whether the braces contained the word expansion prefix
+	     * {*}
+	     */
+
+	    expPtr = &parsePtr->tokenPtr[expIdx];
+	    if ((0 == expandWord)
+		    /* Haven't seen prefix already */
+		    && (1 == parsePtr->numTokens - expIdx)
+		    /* Only one token */
+		    && (((1 == (size_t) expPtr->size)
+			    /* Same length as prefix */
+			    && (expPtr->start[0] == '*')))
+			    /* Is the prefix */
+		    && (numBytes > 0) && (0 == ParseWhiteSpace(termPtr,
+			    numBytes, &parsePtr->incomplete, &type))
+		    && (type != TYPE_COMMAND_END)
+		    /* Non-whitespace follows */) {
+		expandWord = 1;
+		parsePtr->numTokens--;
+		goto parseWord;
+	    }
 	} else {
 	    /*
-	     * This is an unquoted word.  Call ParseTokens and let it do
-	     * all of the work.
+	     * This is an unquoted word. Call ParseTokens and let it do all of
+	     * the work.
 	     */
 
 	    if (ParseTokens(src, numBytes, TYPE_SPACE|terminators,
-		    parsePtr) != TCL_OK) {
+		    TCL_SUBST_ALL, parsePtr) != TCL_OK) {
 		goto error;
 	    }
-	    src = parsePtr->term; numBytes = parsePtr->end - src;
+	    src = parsePtr->term;
+	    numBytes = parsePtr->end - src;
 	}
 
 	/*
-	 * Finish filling in the token for the word and check for the
-	 * special case of a word consisting of a single range of
-	 * literal text.
+	 * Finish filling in the token for the word and check for the special
+	 * case of a word consisting of a single range of literal text.
 	 */
 
 	tokenPtr = &parsePtr->tokenPtr[wordIndex];
 	tokenPtr->size = src - tokenPtr->start;
 	tokenPtr->numComponents = parsePtr->numTokens - (wordIndex + 1);
-	if ((tokenPtr->numComponents == 1)
+	if (expandWord) {
+	    int i, isLiteral = 1;
+
+	    /*
+	     * When a command includes a word that is an expanded literal; for
+	     * example, {*}{1 2 3}, the parser performs that expansion
+	     * immediately, generating several TCL_TOKEN_SIMPLE_WORDs instead
+	     * of a single TCL_TOKEN_EXPAND_WORD that the Tcl_ParseCommand()
+	     * caller might have to expand. This notably makes it simpler for
+	     * those callers that wish to track line endings, such as those
+	     * that implement key parts of TIP 280.
+	     *
+	     * First check whether the thing to be expanded is a literal,
+	     * in the sense of being composed entirely of TCL_TOKEN_TEXT
+	     * tokens.
+	     */
+
+	    for (i = 1; i <= tokenPtr->numComponents; i++) {
+		if (tokenPtr[i].type != TCL_TOKEN_TEXT) {
+		    isLiteral = 0;
+		    break;
+		}
+	    }
+
+	    if (isLiteral) {
+		int elemCount = 0, code = TCL_OK, literal = 1;
+		const char *nextElem, *listEnd, *elemStart;
+
+		/*
+		 * The word to be expanded is a literal, so determine the
+		 * boundaries of the literal string to be treated as a list
+		 * and expanded. That literal string starts at
+		 * tokenPtr[1].start, and includes all bytes up to, but not
+		 * including (tokenPtr[tokenPtr->numComponents].start +
+		 * tokenPtr[tokenPtr->numComponents].size)
+		 */
+
+		listEnd = (tokenPtr[tokenPtr->numComponents].start +
+			tokenPtr[tokenPtr->numComponents].size);
+		nextElem = tokenPtr[1].start;
+
+		/*
+		 * Step through the literal string, parsing and counting list
+		 * elements.
+		 */
+
+		while (nextElem < listEnd) {
+		    int size;
+
+		    code = TclFindElement(NULL, nextElem, listEnd - nextElem,
+			    &elemStart, &nextElem, &size, &literal);
+		    if ((code != TCL_OK) || !literal) {
+			break;
+		    }
+		    if (elemStart < listEnd) {
+			elemCount++;
+		    }
+		}
+
+		if ((code != TCL_OK) || !literal) {
+		    /*
+		     * Some list element could not be parsed, or is not
+		     * present as a literal substring of the script.  The
+		     * compiler cannot handle list elements that get generated
+		     * by a call to TclCopyAndCollapse(). Defer  the
+		     * handling of  this to  compile/eval time, where  code is
+		     * already  in place to  report the  "attempt to  expand a
+		     * non-list" error or expand lists that require
+		     * substitution.
+		     */
+
+		    tokenPtr->type = TCL_TOKEN_EXPAND_WORD;
+		} else if (elemCount == 0) {
+		    /*
+		     * We are expanding a literal empty list. This means that
+		     * the expanding word completely disappears, leaving no
+		     * word generated this pass through the loop. Adjust
+		     * accounting appropriately.
+		     */
+
+		    parsePtr->numWords--;
+		    parsePtr->numTokens = wordIndex;
+		} else {
+		    /*
+		     * Recalculate the number of Tcl_Tokens needed to store
+		     * tokens representing the expanded list.
+		     */
+
+		    CONST char *listStart;
+		    int growthNeeded = wordIndex + 2*elemCount
+			    - parsePtr->numTokens;
+		    parsePtr->numWords += elemCount - 1;
+		    if (growthNeeded > 0) {
+			TclGrowParseTokenArray(parsePtr, growthNeeded);
+			tokenPtr = &parsePtr->tokenPtr[wordIndex];
+		    }
+		    parsePtr->numTokens = wordIndex + 2*elemCount;
+
+		    /*
+		     * Generate a TCL_TOKEN_SIMPLE_WORD token sequence for
+		     * each element of the literal list we are expanding in
+		     * place. Take care with the start and size fields of each
+		     * token so they point to the right literal characters in
+		     * the original script to represent the right expanded
+		     * word value.
+		     */
+
+		    listStart = nextElem = tokenPtr[1].start;
+		    while (nextElem < listEnd) {
+			int quoted;
+	
+			tokenPtr->type = TCL_TOKEN_SIMPLE_WORD;
+			tokenPtr->numComponents = 1;
+
+			tokenPtr++;
+			tokenPtr->type = TCL_TOKEN_TEXT;
+			tokenPtr->numComponents = 0;
+			TclFindElement(NULL, nextElem, listEnd - nextElem,
+				&(tokenPtr->start), &nextElem,
+				&(tokenPtr->size), NULL);
+
+			quoted = (tokenPtr->start[-1] == '{'
+				|| tokenPtr->start[-1] == '"')
+				&& tokenPtr->start > listStart;
+			tokenPtr[-1].start = tokenPtr->start - quoted;
+			tokenPtr[-1].size = tokenPtr->start + tokenPtr->size
+				- tokenPtr[-1].start + quoted;
+
+			tokenPtr++;
+		    }
+		}
+	    } else {
+		/*
+		 * The word to be expanded is not a literal, so defer
+		 * expansion to compile/eval time by marking with a
+		 * TCL_TOKEN_EXPAND_WORD token.
+		 */
+
+		tokenPtr->type = TCL_TOKEN_EXPAND_WORD;
+	    }
+	} else if ((tokenPtr->numComponents == 1)
 		&& (tokenPtr[1].type == TCL_TOKEN_TEXT)) {
 	    tokenPtr->type = TCL_TOKEN_SIMPLE_WORD;
 	}
 
 	/*
-	 * Do two additional checks: (a) make sure we're really at the
-	 * end of a word (there might have been garbage left after a
-	 * quoted or braced word), and (b) check for the end of the
-	 * command.
+	 * Do two additional checks: (a) make sure we're really at the end of
+	 * a word (there might have been garbage left after a quoted or braced
+	 * word), and (b) check for the end of the command.
 	 */
 
-	scanned = TclParseWhiteSpace(src, numBytes, parsePtr, &type);
+	scanned = ParseWhiteSpace(src,numBytes, &parsePtr->incomplete, &type);
 	if (scanned) {
-	    src += scanned; numBytes -= scanned;
+	    src += scanned;
+	    numBytes -= scanned;
 	    continue;
 	}
 
@@ -380,10 +572,10 @@ Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
 	}
 	if ((type & terminators) != 0) {
 	    parsePtr->term = src;
-	    src++; 
+	    src++;
 	    break;
 	}
-	if (src[-1] == '"') { 
+	if (src[-1] == '"') {
 	    if (interp != NULL) {
 		Tcl_SetResult(interp, "extra characters after close-quote",
 			TCL_STATIC);
@@ -403,51 +595,72 @@ Tcl_ParseCommand(interp, string, numBytes, nested, parsePtr)
     parsePtr->commandSize = src - parsePtr->commandStart;
     return TCL_OK;
 
-    error:
+  error:
     Tcl_FreeParse(parsePtr);
-    if (parsePtr->commandStart == NULL) {
-	parsePtr->commandStart = string;
-    }
     parsePtr->commandSize = parsePtr->end - parsePtr->commandStart;
     return TCL_ERROR;
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
- * TclParseWhiteSpace --
+ * TclIsSpaceProc --
  *
- *	Scans up to numBytes bytes starting at src, consuming white
- *	space as defined by Tcl's parsing rules.  
+ *	Report whether byte is in the set of whitespace characters used by
+ *	Tcl to separate words in scripts or elements in lists.
  *
  * Results:
- *	Returns the number of bytes recognized as white space.  Records
- *	at parsePtr, information about the parse.  Records at typePtr
- *	the character type of the non-whitespace character that terminated
- *	the scan.
+ *	Returns 1, if byte is in the set, 0 otherwise.
  *
  * Side effects:
  *	None.
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclParseWhiteSpace(src, numBytes, parsePtr, typePtr)
-    CONST char *src;		/* First character to parse. */
-    register int numBytes;	/* Max number of bytes to scan. */
-    Tcl_Parse *parsePtr;	/* Information about parse in progress.
-				 * Updated if parsing indicates
-				 * an incomplete command. */
-    char *typePtr;		/* Points to location to store character
-				 * type of character that ends run
-				 * of whitespace */
+TclIsSpaceProc(
+    char byte)
+{
+    return CHAR_TYPE(byte) & (TYPE_SPACE) || byte == '\n';
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ParseWhiteSpace --
+ *
+ *	Scans up to numBytes bytes starting at src, consuming white space
+ *	between words as defined by Tcl's parsing rules.
+ *
+ * Results:
+ *	Returns the number of bytes recognized as white space. Records at
+ *	parsePtr, information about the parse. Records at typePtr the
+ *	character type of the non-whitespace character that terminated the
+ *	scan.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ParseWhiteSpace(
+    const char *src,		/* First character to parse. */
+    register int numBytes,	/* Max number of bytes to scan. */
+    int *incompletePtr,		/* Set this boolean memory to true if parsing
+				 * indicates an incomplete command. */
+    char *typePtr)		/* Points to location to store character type
+				 * of character that ends run of whitespace */
 {
     register char type = TYPE_NORMAL;
-    register CONST char *p = src;
+    register const char *p = src;
 
     while (1) {
 	while (numBytes && ((type = CHAR_TYPE(*p)) & TYPE_SPACE)) {
-	    numBytes--; p++;
+	    numBytes--;
+	    p++;
 	}
 	if (numBytes && (type & TYPE_SUBS)) {
 	    if (*p != '\\') {
@@ -461,7 +674,7 @@ TclParseWhiteSpace(src, numBytes, parsePtr, typePtr)
 	    }
 	    p+=2;
 	    if (--numBytes == 0) {
-		parsePtr->incomplete = 1;
+		*incompletePtr = 1;
 		break;
 	    }
 	    continue;
@@ -475,42 +688,74 @@ TclParseWhiteSpace(src, numBytes, parsePtr, typePtr)
 /*
  *----------------------------------------------------------------------
  *
+ * TclParseAllWhiteSpace --
+ *
+ *	Scans up to numBytes bytes starting at src, consuming all white space
+ *	including the command-terminating newline characters.
+ *
+ * Results:
+ *	Returns the number of bytes recognized as white space.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclParseAllWhiteSpace(
+    const char *src,		/* First character to parse. */
+    int numBytes)		/* Max number of byes to scan */
+{
+    int dummy;
+    char type;
+    const char *p = src;
+
+    do {
+	int scanned = ParseWhiteSpace(p, numBytes, &dummy, &type);
+
+	p += scanned;
+	numBytes -= scanned;
+    } while (numBytes && (*p == '\n') && (p++, --numBytes));
+    return (p-src);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TclParseHex --
  *
- *	Scans a hexadecimal number as a Tcl_UniChar value.
- *	(e.g., for parsing \x and \u escape sequences).
- *	At most numBytes bytes are scanned.
+ *	Scans a hexadecimal number as a Tcl_UniChar value (e.g., for parsing
+ *	\x and \u escape sequences). At most numBytes bytes are scanned.
  *
  * Results:
- *	The numeric value is stored in *resultPtr.
- *	Returns the number of bytes consumed.
+ *	The numeric value is stored in *resultPtr. Returns the number of bytes
+ *	consumed.
  *
  * Notes:
- *	Relies on the following properties of the ASCII
- *	character set, with which UTF-8 is compatible:
+ *	Relies on the following properties of the ASCII character set, with
+ *	which UTF-8 is compatible:
  *
- *	The digits '0' .. '9' and the letters 'A' .. 'Z' and 'a' .. 'z' 
- *	occupy consecutive code points, and '0' < 'A' < 'a'.
+ *	The digits '0' .. '9' and the letters 'A' .. 'Z' and 'a' .. 'z' occupy
+ *	consecutive code points, and '0' < 'A' < 'a'.
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclParseHex(src, numBytes, resultPtr)
-    CONST char *src;		/* First character to parse. */
-    int numBytes;		/* Max number of byes to scan */
-    Tcl_UniChar *resultPtr;	/* Points to storage provided by
-				 * caller where the Tcl_UniChar
-				 * resulting from the conversion is
-				 * to be written. */
+TclParseHex(
+    const char *src,		/* First character to parse. */
+    int numBytes,		/* Max number of byes to scan */
+    Tcl_UniChar *resultPtr)	/* Points to storage provided by caller where
+				 * the Tcl_UniChar resulting from the
+				 * conversion is to be written. */
 {
     Tcl_UniChar result = 0;
-    register CONST char *p = src;
+    register const char *p = src;
 
     while (numBytes--) {
 	unsigned char digit = UCHAR(*p);
 
-	if (!isxdigit(digit))
+	if (!isxdigit(digit)) {
 	    break;
+	}
 
 	++p;
 	result <<= 4;
@@ -533,35 +778,35 @@ TclParseHex(src, numBytes, resultPtr)
  *
  * TclParseBackslash --
  *
- *	Scans up to numBytes bytes starting at src, consuming a
- *	backslash sequence as defined by Tcl's parsing rules.  
+ *	Scans up to numBytes bytes starting at src, consuming a backslash
+ *	sequence as defined by Tcl's parsing rules.
  *
  * Results:
  * 	Records at readPtr the number of bytes making up the backslash
- * 	sequence.  Records at dst the UTF-8 encoded equivalent of
- * 	that backslash sequence.  Returns the number of bytes written
- * 	to dst, at most TCL_UTF_MAX.  Either readPtr or dst may be
- * 	NULL, if the results are not needed, but the return value is
- * 	the same either way.
+ * 	sequence. Records at dst the UTF-8 encoded equivalent of that
+ * 	backslash sequence. Returns the number of bytes written to dst, at
+ * 	most TCL_UTF_MAX. Either readPtr or dst may be NULL, if the results
+ * 	are not needed, but the return value is the same either way.
  *
  * Side effects:
  * 	None.
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclParseBackslash(src, numBytes, readPtr, dst)
-    CONST char * src;	/* Points to the backslash character of a
-			 * a backslash sequence */
-    int numBytes;	/* Max number of bytes to scan */
-    int *readPtr;	/* NULL, or points to storage where the
-			 * number of bytes scanned should be written. */
-    char *dst;		/* NULL, or points to buffer where the UTF-8
-			 * encoding of the backslash sequence is to be
-			 * written.  At most TCL_UTF_MAX bytes will be
-			 * written there. */
+TclParseBackslash(
+    const char *src,		/* Points to the backslash character of a a
+				 * backslash sequence. */
+    int numBytes,		/* Max number of bytes to scan. */
+    int *readPtr,		/* NULL, or points to storage where the number
+				 * of bytes scanned should be written. */
+    char *dst)			/* NULL, or points to buffer where the UTF-8
+				 * encoding of the backslash sequence is to be
+				 * written. At most TCL_UTF_MAX bytes will be
+				 * written there. */
 {
-    register CONST char *p = src+1;
+    register const char *p = src+1;
     Tcl_UniChar result;
     int count;
     char buf[TCL_UTF_MAX];
@@ -574,11 +819,14 @@ TclParseBackslash(src, numBytes, readPtr, dst)
     }
 
     if (dst == NULL) {
-        dst = buf;
+	dst = buf;
     }
 
     if (numBytes == 1) {
-	/* Can only scan the backslash.  Return it. */
+	/*
+	 * Can only scan the backslash, so return it.
+	 */
+
 	result = '\\';
 	count = 1;
 	goto done;
@@ -586,105 +834,117 @@ TclParseBackslash(src, numBytes, readPtr, dst)
 
     count = 2;
     switch (*p) {
-        /*
-         * Note: in the conversions below, use absolute values (e.g.,
-         * 0xa) rather than symbolic values (e.g. \n) that get converted
-         * by the compiler.  It's possible that compilers on some
-         * platforms will do the symbolic conversions differently, which
-         * could result in non-portable Tcl scripts.
-         */
-
-        case 'a':
-            result = 0x7;
-            break;
-        case 'b':
-            result = 0x8;
-            break;
-        case 'f':
-            result = 0xc;
-            break;
-        case 'n':
-            result = 0xa;
-            break;
-        case 'r':
-            result = 0xd;
-            break;
-        case 't':
-            result = 0x9;
-            break;
-        case 'v':
-            result = 0xb;
-            break;
-        case 'x':
-	    count += TclParseHex(p+1, numBytes-2, &result);
-	    if (count == 2) {
-		/* No hexadigits -> This is just "x". */
-		result = 'x';
-	    } else {
-		/* Keep only the last byte (2 hex digits) */
-		result = (unsigned char) result;
-	    }
-            break;
-        case 'u':
-	    count += TclParseHex(p+1, (numBytes > 5) ? 4 : numBytes-2, &result);
-	    if (count == 2) {
-		/* No hexadigits -> This is just "u". */
-		result = 'u';
+	/*
+	 * Note: in the conversions below, use absolute values (e.g., 0xa)
+	 * rather than symbolic values (e.g. \n) that get converted by the
+	 * compiler. It's possible that compilers on some platforms will do
+	 * the symbolic conversions differently, which could result in
+	 * non-portable Tcl scripts.
+	 */
+
+    case 'a':
+	result = 0x7;
+	break;
+    case 'b':
+	result = 0x8;
+	break;
+    case 'f':
+	result = 0xc;
+	break;
+    case 'n':
+	result = 0xa;
+	break;
+    case 'r':
+	result = 0xd;
+	break;
+    case 't':
+	result = 0x9;
+	break;
+    case 'v':
+	result = 0xb;
+	break;
+    case 'x':
+	count += TclParseHex(p+1, numBytes-2, &result);
+	if (count == 2) {
+	    /*
+	     * No hexadigits -> This is just "x".
+	     */
+
+	    result = 'x';
+	} else {
+	    /*
+	     * Keep only the last byte (2 hex digits).
+	     */
+	    result = (unsigned char) result;
+	}
+	break;
+    case 'u':
+	count += TclParseHex(p+1, (numBytes > 5) ? 4 : numBytes-2, &result);
+	if (count == 2) {
+	    /*
+	     * No hexadigits -> This is just "u".
+	     */
+	    result = 'u';
+	}
+	break;
+    case '\n':
+	count--;
+	do {
+	    p++;
+	    count++;
+	} while ((count < numBytes) && ((*p == ' ') || (*p == '\t')));
+	result = ' ';
+	break;
+    case 0:
+	result = '\\';
+	count = 1;
+	break;
+    default:
+	/*
+	 * Check for an octal number \oo?o?
+	 */
+
+	if (isdigit(UCHAR(*p)) && (UCHAR(*p) < '8')) {	/* INTL: digit */
+	    result = (unsigned char)(*p - '0');
+	    p++;
+	    if ((numBytes == 2) || !isdigit(UCHAR(*p))	/* INTL: digit */
+		    || (UCHAR(*p) >= '8')) {
+		break;
 	    }
-            break;
-        case '\n':
-            count--;
-            do {
-                p++; count++;
-            } while ((count < numBytes) && ((*p == ' ') || (*p == '\t')));
-            result = ' ';
-            break;
-        case 0:
-            result = '\\';
-            count = 1;
-            break;
-        default:
-            /*
-             * Check for an octal number \oo?o?
-             */
-            if (isdigit(UCHAR(*p)) && (UCHAR(*p) < '8')) { /* INTL: digit */
-                result = (unsigned char)(*p - '0');
-                p++;
-                if ((numBytes == 2) || !isdigit(UCHAR(*p)) /* INTL: digit */
-			|| (UCHAR(*p) >= '8')) { 
-                    break;
-                }
-                count = 3;
-                result = (unsigned char)((result << 3) + (*p - '0'));
-                p++;
-                if ((numBytes == 3) || !isdigit(UCHAR(*p)) /* INTL: digit */
-			|| (UCHAR(*p) >= '8')) {
-                    break;
-                }
-                count = 4;
-                result = (unsigned char)((result << 3) + (*p - '0'));
-                break;
-            }
-            /*
-             * We have to convert here in case the user has put a
-             * backslash in front of a multi-byte utf-8 character.
-             * While this means nothing special, we shouldn't break up
-             * a correct utf-8 character. [Bug #217987] test subst-3.2
-             */
-	    if (Tcl_UtfCharComplete(p, numBytes - 1)) {
-	        count = Tcl_UtfToUniChar(p, &result) + 1; /* +1 for '\' */
-	    } else {
-		char utfBytes[TCL_UTF_MAX];
-		memcpy(utfBytes, p, (size_t) (numBytes - 1));
-		utfBytes[numBytes - 1] = '\0';
-	        count = Tcl_UtfToUniChar(utfBytes, &result) + 1;
+	    count = 3;
+	    result = (unsigned char)((result << 3) + (*p - '0'));
+	    p++;
+	    if ((numBytes == 3) || !isdigit(UCHAR(*p))	/* INTL: digit */
+		    || (UCHAR(*p) >= '8')) {
+		break;
 	    }
-            break;
+	    count = 4;
+	    result = (unsigned char)((result << 3) + (*p - '0'));
+	    break;
+	}
+
+	/*
+	 * We have to convert here in case the user has put a backslash in
+	 * front of a multi-byte utf-8 character. While this means nothing
+	 * special, we shouldn't break up a correct utf-8 character. [Bug
+	 * #217987] test subst-3.2
+	 */
+
+	if (Tcl_UtfCharComplete(p, numBytes - 1)) {
+	    count = Tcl_UtfToUniChar(p, &result) + 1;	/* +1 for '\' */
+	} else {
+	    char utfBytes[TCL_UTF_MAX];
+
+	    memcpy(utfBytes, p, (size_t) (numBytes - 1));
+	    utfBytes[numBytes - 1] = '\0';
+	    count = Tcl_UtfToUniChar(utfBytes, &result) + 1;
+	}
+	break;
     }
 
-    done:
+  done:
     if (readPtr != NULL) {
-        *readPtr = count;
+	*readPtr = count;
     }
     return Tcl_UniCharToUtf((int) result, dst);
 }
@@ -694,57 +954,69 @@ TclParseBackslash(src, numBytes, readPtr, dst)
  *
  * ParseComment --
  *
- *	Scans up to numBytes bytes starting at src, consuming a
- *	Tcl comment as defined by Tcl's parsing rules.  
+ *	Scans up to numBytes bytes starting at src, consuming a Tcl comment as
+ *	defined by Tcl's parsing rules.
  *
  * Results:
- * 	Records in parsePtr information about the parse.  Returns the
- * 	number of bytes consumed.
+ * 	Records in parsePtr information about the parse. Returns the number of
+ * 	bytes consumed.
  *
  * Side effects:
  * 	None.
  *
  *----------------------------------------------------------------------
  */
+
 static int
-ParseComment(src, numBytes, parsePtr)
-    CONST char *src;		/* First character to parse. */
-    register int numBytes;	/* Max number of bytes to scan. */
-    Tcl_Parse *parsePtr;	/* Information about parse in progress.
-				 * Updated if parsing indicates
-				 * an incomplete command. */
+ParseComment(
+    const char *src,		/* First character to parse. */
+    register int numBytes,	/* Max number of bytes to scan. */
+    Tcl_Parse *parsePtr)	/* Information about parse in progress.
+				 * Updated if parsing indicates an incomplete
+				 * command. */
 {
-    register CONST char *p = src;
+    register const char *p = src;
+
     while (numBytes) {
 	char type;
 	int scanned;
+
 	do {
-	    scanned = TclParseWhiteSpace(p, numBytes, parsePtr, &type);
-	    p += scanned; numBytes -= scanned;
+	    scanned = ParseWhiteSpace(p, numBytes,
+		    &parsePtr->incomplete, &type);
+	    p += scanned;
+	    numBytes -= scanned;
 	} while (numBytes && (*p == '\n') && (p++,numBytes--));
+
 	if ((numBytes == 0) || (*p != '#')) {
 	    break;
 	}
 	if (parsePtr->commentStart == NULL) {
 	    parsePtr->commentStart = p;
 	}
+
 	while (numBytes) {
 	    if (*p == '\\') {
-		scanned = TclParseWhiteSpace(p, numBytes, parsePtr, &type);
+		scanned = ParseWhiteSpace(p, numBytes, &parsePtr->incomplete,
+			&type);
 		if (scanned) {
-		    p += scanned; numBytes -= scanned;
+		    p += scanned;
+		    numBytes -= scanned;
 		} else {
 		    /*
-		     * General backslash substitution in comments isn't
-		     * part of the formal spec, but test parse-15.47
-		     * and history indicate that it has been the de facto
-		     * rule.  Don't change it now.
+		     * General backslash substitution in comments isn't part
+		     * of the formal spec, but test parse-15.47 and history
+		     * indicate that it has been the de facto rule. Don't
+		     * change it now.
 		     */
+
 		    TclParseBackslash(p, numBytes, &scanned, NULL);
-		    p += scanned; numBytes -= scanned;
+		    p += scanned;
+		    numBytes -= scanned;
 		}
 	    } else {
-		p++; numBytes--;
+		p++;
+		numBytes--;
 		if (p[-1] == '\n') {
 		    break;
 		}
@@ -754,27 +1026,25 @@ ParseComment(src, numBytes, parsePtr)
     }
     return (p - src);
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * ParseTokens --
  *
- *	This procedure forms the heart of the Tcl parser.  It parses one
- *	or more tokens from a string, up to a termination point
- *	specified by the caller.  This procedure is used to parse
- *	unquoted command words (those not in quotes or braces), words in
- *	quotes, and array indices for variables.  No more than numBytes
- *	bytes will be scanned.
+ *	This function forms the heart of the Tcl parser. It parses one or more
+ *	tokens from a string, up to a termination point specified by the
+ *	caller. This function is used to parse unquoted command words (those
+ *	not in quotes or braces), words in quotes, and array indices for
+ *	variables. No more than numBytes bytes will be scanned.
  *
  * Results:
- *	Tokens are added to parsePtr and parsePtr->term is filled in
- *	with the address of the character that terminated the parse (the
- *	first one whose CHAR_TYPE matched mask or the character at
- *	parsePtr->end).  The return value is TCL_OK if the parse
- *	completed successfully and TCL_ERROR otherwise.  If a parse
- *	error occurs and parsePtr->interp isn't NULL, then an error
- *	message is left in the interpreter's result.
+ *	Tokens are added to parsePtr and parsePtr->term is filled in with the
+ *	address of the character that terminated the parse (the first one
+ *	whose CHAR_TYPE matched mask or the character at parsePtr->end). The
+ *	return value is TCL_OK if the parse completed successfully and
+ *	TCL_ERROR otherwise. If a parse error occurs and parsePtr->interp is
+ *	not NULL, then an error message is left in the interpreter's result.
  *
  * Side effects:
  *	None.
@@ -783,45 +1053,49 @@ ParseComment(src, numBytes, parsePtr)
  */
 
 static int
-ParseTokens(src, numBytes, mask, parsePtr)
-    register CONST char *src;	/* First character to parse. */
-    register int numBytes;	/* Max number of bytes to scan. */
-    int mask;			/* Specifies when to stop parsing.  The
-				 * parse stops at the first unquoted
-				 * character whose CHAR_TYPE contains
-				 * any of the bits in mask. */
-    Tcl_Parse *parsePtr;	/* Information about parse in progress.
+ParseTokens(
+    register const char *src,	/* First character to parse. */
+    register int numBytes,	/* Max number of bytes to scan. */
+    int mask,			/* Specifies when to stop parsing. The parse
+				 * stops at the first unquoted character whose
+				 * CHAR_TYPE contains any of the bits in
+				 * mask. */
+    int flags,			/* OR-ed bits indicating what substitutions to
+				 * perform: TCL_SUBST_COMMANDS,
+				 * TCL_SUBST_VARIABLES, and
+				 * TCL_SUBST_BACKSLASHES */
+    Tcl_Parse *parsePtr)	/* Information about parse in progress.
 				 * Updated with additional tokens and
 				 * termination information. */
 {
-    char type; 
-    int originalTokens, varToken;
+    char type;
+    int originalTokens;
+    int noSubstCmds = !(flags & TCL_SUBST_COMMANDS);
+    int noSubstVars = !(flags & TCL_SUBST_VARIABLES);
+    int noSubstBS = !(flags & TCL_SUBST_BACKSLASHES);
     Tcl_Token *tokenPtr;
-    Tcl_Parse nested;
 
     /*
-     * Each iteration through the following loop adds one token of
-     * type TCL_TOKEN_TEXT, TCL_TOKEN_BS, TCL_TOKEN_COMMAND, or
-     * TCL_TOKEN_VARIABLE to parsePtr.  For TCL_TOKEN_VARIABLE tokens,
-     * additional tokens are added for the parsed variable name.
+     * Each iteration through the following loop adds one token of type
+     * TCL_TOKEN_TEXT, TCL_TOKEN_BS, TCL_TOKEN_COMMAND, or TCL_TOKEN_VARIABLE
+     * to parsePtr. For TCL_TOKEN_VARIABLE tokens, additional tokens are added
+     * for the parsed variable name.
      */
 
     originalTokens = parsePtr->numTokens;
     while (numBytes && !((type = CHAR_TYPE(*src)) & mask)) {
-	if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
+	TclGrowParseTokenArray(parsePtr, 1);
 	tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
 	tokenPtr->start = src;
 	tokenPtr->numComponents = 0;
 
 	if ((type & TYPE_SUBS) == 0) {
 	    /*
-	     * This is a simple range of characters.  Scan to find the end
-	     * of the range.
+	     * This is a simple range of characters. Scan to find the end of
+	     * the range.
 	     */
 
-	    while ((++src, --numBytes) 
+	    while ((++src, --numBytes)
 		    && !(CHAR_TYPE(*src) & (mask | TYPE_SUBS))) {
 		/* empty loop */
 	    }
@@ -829,81 +1103,116 @@ ParseTokens(src, numBytes, mask, parsePtr)
 	    tokenPtr->size = src - tokenPtr->start;
 	    parsePtr->numTokens++;
 	} else if (*src == '$') {
+	    int varToken;
+
+	    if (noSubstVars) {
+		tokenPtr->type = TCL_TOKEN_TEXT;
+		tokenPtr->size = 1;
+		parsePtr->numTokens++;
+		src++;
+		numBytes--;
+		continue;
+	    }
+
 	    /*
-	     * This is a variable reference.  Call Tcl_ParseVarName to do
-	     * all the dirty work of parsing the name.
+	     * This is a variable reference.  Call Tcl_ParseVarName to do all
+	     * the dirty work of parsing the name.
 	     */
 
 	    varToken = parsePtr->numTokens;
-	    if (Tcl_ParseVarName(parsePtr->interp, src, numBytes,
-		    parsePtr, 1) != TCL_OK) {
+	    if (Tcl_ParseVarName(parsePtr->interp, src, numBytes, parsePtr,
+		    1) != TCL_OK) {
 		return TCL_ERROR;
 	    }
 	    src += parsePtr->tokenPtr[varToken].size;
 	    numBytes -= parsePtr->tokenPtr[varToken].size;
 	} else if (*src == '[') {
+	    Tcl_Parse *nestedPtr;
+
+	    if (noSubstCmds) {
+		tokenPtr->type = TCL_TOKEN_TEXT;
+		tokenPtr->size = 1;
+		parsePtr->numTokens++;
+		src++;
+		numBytes--;
+		continue;
+	    }
+
 	    /*
-	     * Command substitution.  Call Tcl_ParseCommand recursively
-	     * (and repeatedly) to parse the nested command(s), then
-	     * throw away the parse information.
+	     * Command substitution.  Call Tcl_ParseCommand recursively (and
+	     * repeatedly) to parse the nested command(s), then throw away the
+	     * parse information.
 	     */
 
-	    src++; numBytes--;
+	    src++;
+	    numBytes--;
+	    nestedPtr = (Tcl_Parse *)
+		    TclStackAlloc(parsePtr->interp, sizeof(Tcl_Parse));
 	    while (1) {
-		if (Tcl_ParseCommand(parsePtr->interp, src,
-			numBytes, 1, &nested) != TCL_OK) {
-		    parsePtr->errorType = nested.errorType;
-		    parsePtr->term = nested.term;
-		    parsePtr->incomplete = nested.incomplete;
+		if (Tcl_ParseCommand(parsePtr->interp, src, numBytes, 1,
+			nestedPtr) != TCL_OK) {
+		    parsePtr->errorType = nestedPtr->errorType;
+		    parsePtr->term = nestedPtr->term;
+		    parsePtr->incomplete = nestedPtr->incomplete;
+		    TclStackFree(parsePtr->interp, nestedPtr);
 		    return TCL_ERROR;
 		}
-		src = nested.commandStart + nested.commandSize;
+		src = nestedPtr->commandStart + nestedPtr->commandSize;
 		numBytes = parsePtr->end - src;
-
-		/*
-		 * This is equivalent to Tcl_FreeParse(&nested), but
-		 * presumably inlined here for sake of runtime optimization
-		 */
-
-		if (nested.tokenPtr != nested.staticTokens) {
-		    ckfree((char *) nested.tokenPtr);
-		}
+		Tcl_FreeParse(nestedPtr);
 
 		/*
 		 * Check for the closing ']' that ends the command
-		 * substitution.  It must have been the last character of
-		 * the parsed command.
+		 * substitution. It must have been the last character of the
+		 * parsed command.
 		 */
 
-		if ((nested.term < parsePtr->end) && (*nested.term == ']')
-			&& !nested.incomplete) {
+		if ((nestedPtr->term < parsePtr->end)
+			&& (*(nestedPtr->term) == ']')
+			&& !(nestedPtr->incomplete)) {
 		    break;
 		}
 		if (numBytes == 0) {
 		    if (parsePtr->interp != NULL) {
 			Tcl_SetResult(parsePtr->interp,
-			    "missing close-bracket", TCL_STATIC);
+				"missing close-bracket", TCL_STATIC);
 		    }
 		    parsePtr->errorType = TCL_PARSE_MISSING_BRACKET;
 		    parsePtr->term = tokenPtr->start;
 		    parsePtr->incomplete = 1;
+		    TclStackFree(parsePtr->interp, nestedPtr);
 		    return TCL_ERROR;
 		}
 	    }
+	    TclStackFree(parsePtr->interp, nestedPtr);
 	    tokenPtr->type = TCL_TOKEN_COMMAND;
 	    tokenPtr->size = src - tokenPtr->start;
 	    parsePtr->numTokens++;
 	} else if (*src == '\\') {
+	    if (noSubstBS) {
+		tokenPtr->type = TCL_TOKEN_TEXT;
+		tokenPtr->size = 1;
+		parsePtr->numTokens++;
+		src++;
+		numBytes--;
+		continue;
+	    }
+
 	    /*
 	     * Backslash substitution.
 	     */
+
 	    TclParseBackslash(src, numBytes, &tokenPtr->size, NULL);
 
 	    if (tokenPtr->size == 1) {
-		/* Just a backslash, due to end of string */
+		/*
+		 * Just a backslash, due to end of string.
+		 */
+
 		tokenPtr->type = TCL_TOKEN_TEXT;
 		parsePtr->numTokens++;
-		src++; numBytes--;
+		src++;
+		numBytes--;
 		continue;
 	    }
 
@@ -913,9 +1222,9 @@ ParseTokens(src, numBytes, mask, parsePtr)
 		}
 
 		/*
-		 * Note: backslash-newline is special in that it is
-		 * treated the same as a space character would be.  This
-		 * means that it could terminate the token.
+		 * Note: backslash-newline is special in that it is treated
+		 * the same as a space character would be. This means that it
+		 * could terminate the token.
 		 */
 
 		if (mask & TYPE_SPACE) {
@@ -934,25 +1243,24 @@ ParseTokens(src, numBytes, mask, parsePtr)
 	    tokenPtr->type = TCL_TOKEN_TEXT;
 	    tokenPtr->size = 1;
 	    parsePtr->numTokens++;
-	    src++; numBytes--;
+	    src++;
+	    numBytes--;
 	} else {
-	    panic("ParseTokens encountered unknown character");
+	    Tcl_Panic("ParseTokens encountered unknown character");
 	}
     }
     if (parsePtr->numTokens == originalTokens) {
 	/*
-	 * There was nothing in this range of text.  Add an empty token
-	 * for the empty range, so that there is always at least one
-	 * token added.
+	 * There was nothing in this range of text. Add an empty token for the
+	 * empty range, so that there is always at least one token added.
 	 */
-	if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
+
+	TclGrowParseTokenArray(parsePtr, 1);
 	tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
 	tokenPtr->start = src;
 	tokenPtr->numComponents = 0;
 
-	finishToken:
+    finishToken:
 	tokenPtr->type = TCL_TOKEN_TEXT;
 	tokenPtr->size = 0;
 	parsePtr->numTokens++;
@@ -960,171 +1268,112 @@ ParseTokens(src, numBytes, mask, parsePtr)
     parsePtr->term = src;
     return TCL_OK;
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_FreeParse --
  *
- *	This procedure is invoked to free any dynamic storage that may
- *	have been allocated by a previous call to Tcl_ParseCommand.
+ *	This function is invoked to free any dynamic storage that may have
+ *	been allocated by a previous call to Tcl_ParseCommand.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If there is any dynamically allocated memory in *parsePtr,
- *	it is freed.
+ *	If there is any dynamically allocated memory in *parsePtr, it is
+ *	freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_FreeParse(parsePtr)
-    Tcl_Parse *parsePtr;	/* Structure that was filled in by a
-				 * previous call to Tcl_ParseCommand. */
+Tcl_FreeParse(
+    Tcl_Parse *parsePtr)	/* Structure that was filled in by a previous
+				 * call to Tcl_ParseCommand. */
 {
     if (parsePtr->tokenPtr != parsePtr->staticTokens) {
 	ckfree((char *) parsePtr->tokenPtr);
 	parsePtr->tokenPtr = parsePtr->staticTokens;
     }
 }
-
-/*
- *----------------------------------------------------------------------
- *
- * TclExpandTokenArray --
- *
- *	This procedure is invoked when the current space for tokens in
- *	a Tcl_Parse structure fills up; it allocates memory to grow the
- *	token array
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Memory is allocated for a new larger token array; the memory
- *	for the old array is freed, if it had been dynamically allocated.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclExpandTokenArray(parsePtr)
-    Tcl_Parse *parsePtr;	/* Parse structure whose token space
-				 * has overflowed. */
-{
-    int newCount;
-    Tcl_Token *newPtr;
-
-#define MAX_TOKENS (int)(UINT_MAX / sizeof(Tcl_Token))
-
-    if (parsePtr->tokensAvailable == MAX_TOKENS) {
-	Tcl_Panic("max # of tokens for a Tcl parse (%d) exceeded", MAX_TOKENS);
-    }
-    newCount = parsePtr->tokensAvailable*2;
-    if (newCount > MAX_TOKENS) {
-	newCount = MAX_TOKENS;
-    }
-    newPtr = (Tcl_Token *) ckalloc((unsigned) (newCount * sizeof(Tcl_Token)));
-    memcpy((VOID *) newPtr, (VOID *) parsePtr->tokenPtr,
-	    (size_t) (parsePtr->tokensAvailable * sizeof(Tcl_Token)));
-    if (parsePtr->tokenPtr != parsePtr->staticTokens) {
-	ckfree((char *) parsePtr->tokenPtr);
-    }
-    parsePtr->tokenPtr = newPtr;
-    parsePtr->tokensAvailable = newCount;
-}
-
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_ParseVarName --
  *
- *	Given a string starting with a $ sign, parse off a variable
- *	name and return information about the parse.  No more than
- *	numBytes bytes will be scanned.
+ *	Given a string starting with a $ sign, parse off a variable name and
+ *	return information about the parse. No more than numBytes bytes will
+ *	be scanned.
  *
  * Results:
- *	The return value is TCL_OK if the command was parsed
- *	successfully and TCL_ERROR otherwise.  If an error occurs and
- *	interp isn't NULL then an error message is left in its result. 
- *	On a successful return, tokenPtr and numTokens fields of
- *	parsePtr are filled in with information about the variable name
- *	that was parsed.  The "size" field of the first new token gives
- *	the total number of bytes in the variable name.  Other fields in
- *	parsePtr are undefined.
+ *	The return value is TCL_OK if the command was parsed successfully and
+ *	TCL_ERROR otherwise. If an error occurs and interp isn't NULL then an
+ *	error message is left in its result. On a successful return, tokenPtr
+ *	and numTokens fields of parsePtr are filled in with information about
+ *	the variable name that was parsed. The "size" field of the first new
+ *	token gives the total number of bytes in the variable name. Other
+ *	fields in parsePtr are undefined.
  *
  * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the command, then additional space is
- *	malloc-ed.  If the procedure returns TCL_OK then the caller must
- *	eventually invoke Tcl_FreeParse to release any additional space
- *	that was allocated.
+ *	If there is insufficient space in parsePtr to hold all the information
+ *	about the command, then additional space is malloc-ed. If the function
+ *	returns TCL_OK then the caller must eventually invoke Tcl_FreeParse to
+ *	release any additional space that was allocated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting;
-				 * if NULL, then no error message is
-				 * provided. */
-    CONST char *string;		/* String containing variable name.  First
-				 * character must be "$". */
-    register int numBytes;	/* Total number of bytes in string.  If < 0,
+Tcl_ParseVarName(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting; if
+				 * NULL, then no error message is provided. */
+    const char *start,		/* Start of variable substitution string.
+				 * First character must be "$". */
+    register int numBytes,	/* Total number of bytes in string. If < 0,
 				 * the string consists of all bytes up to the
 				 * first null character. */
-    Tcl_Parse *parsePtr;	/* Structure to fill in with information
-				 * about the variable name. */
-    int append;			/* Non-zero means append tokens to existing
+    Tcl_Parse *parsePtr,	/* Structure to fill in with information about
+				 * the variable name. */
+    int append)			/* Non-zero means append tokens to existing
 				 * information in parsePtr; zero means ignore
-				 * existing tokens in parsePtr and reinitialize
-				 * it. */
+				 * existing tokens in parsePtr and
+				 * reinitialize it. */
 {
     Tcl_Token *tokenPtr;
-    register CONST char *src;
+    register const char *src;
     unsigned char c;
     int varIndex, offset;
     Tcl_UniChar ch;
     unsigned array;
 
-    if ((numBytes == 0) || (string == NULL)) {
+    if ((numBytes == 0) || (start == NULL)) {
 	return TCL_ERROR;
     }
     if (numBytes < 0) {
-	numBytes = strlen(string);
+	numBytes = strlen(start);
     }
 
     if (!append) {
-	parsePtr->numWords = 0;
-	parsePtr->tokenPtr = parsePtr->staticTokens;
-	parsePtr->numTokens = 0;
-	parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
-	parsePtr->string = string;
-	parsePtr->end = (string + numBytes);
-	parsePtr->interp = interp;
-	parsePtr->errorType = TCL_PARSE_SUCCESS;
-	parsePtr->incomplete = 0;
+	TclParseInit(interp, start, numBytes, parsePtr);
     }
 
     /*
-     * Generate one token for the variable, an additional token for the
-     * name, plus any number of additional tokens for the index, if
-     * there is one.
+     * Generate one token for the variable, an additional token for the name,
+     * plus any number of additional tokens for the index, if there is one.
      */
 
-    src = string;
-    if ((parsePtr->numTokens + 2) > parsePtr->tokensAvailable) {
-	TclExpandTokenArray(parsePtr);
-    }
+    src = start;
+    TclGrowParseTokenArray(parsePtr, 2);
     tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
     tokenPtr->type = TCL_TOKEN_VARIABLE;
     tokenPtr->start = src;
     varIndex = parsePtr->numTokens;
     parsePtr->numTokens++;
     tokenPtr++;
-    src++; numBytes--;
+    src++;
+    numBytes--;
     if (numBytes == 0) {
 	goto justADollarSign;
     }
@@ -1134,29 +1383,30 @@ Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
 
     /*
      * The name of the variable can have three forms:
-     * 1. The $ sign is followed by an open curly brace.  Then 
-     *    the variable name is everything up to the next close
-     *    curly brace, and the variable is a scalar variable.
-     * 2. The $ sign is not followed by an open curly brace.  Then
-     *    the variable name is everything up to the next
-     *    character that isn't a letter, digit, or underscore.
-     *    :: sequences are also considered part of the variable
-     *    name, in order to support namespaces. If the following
-     *    character is an open parenthesis, then the information
-     *    between parentheses is the array element name.
-     * 3. The $ sign is followed by something that isn't a letter,
-     *    digit, or underscore:  in this case, there is no variable
-     *    name and the token is just "$".
+     * 1. The $ sign is followed by an open curly brace. Then the variable
+     *	  name is everything up to the next close curly brace, and the
+     *	  variable is a scalar variable.
+     * 2. The $ sign is not followed by an open curly brace. Then the variable
+     *	  name is everything up to the next character that isn't a letter,
+     *	  digit, or underscore. :: sequences are also considered part of the
+     *	  variable name, in order to support namespaces. If the following
+     *	  character is an open parenthesis, then the information between
+     *	  parentheses is the array element name.
+     * 3. The $ sign is followed by something that isn't a letter, digit, or
+     *	  underscore: in this case, there is no variable name and the token is
+     *	  just "$".
      */
 
     if (*src == '{') {
-	src++; numBytes--;
+	src++;
+	numBytes--;
 	tokenPtr->type = TCL_TOKEN_TEXT;
 	tokenPtr->start = src;
 	tokenPtr->numComponents = 0;
 
 	while (numBytes && (*src != '}')) {
-	    numBytes--; src++;
+	    numBytes--;
+	    src++;
 	}
 	if (numBytes == 0) {
 	    if (parsePtr->interp != NULL) {
@@ -1176,24 +1426,29 @@ Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
 	tokenPtr->type = TCL_TOKEN_TEXT;
 	tokenPtr->start = src;
 	tokenPtr->numComponents = 0;
+
 	while (numBytes) {
 	    if (Tcl_UtfCharComplete(src, numBytes)) {
-	        offset = Tcl_UtfToUniChar(src, &ch);
+		offset = Tcl_UtfToUniChar(src, &ch);
 	    } else {
 		char utfBytes[TCL_UTF_MAX];
+
 		memcpy(utfBytes, src, (size_t) numBytes);
 		utfBytes[numBytes] = '\0';
-	        offset = Tcl_UtfToUniChar(utfBytes, &ch);
+		offset = Tcl_UtfToUniChar(utfBytes, &ch);
 	    }
 	    c = UCHAR(ch);
-	    if (isalnum(c) || (c == '_')) { /* INTL: ISO only, UCHAR. */
-		src += offset;  numBytes -= offset;
+	    if (isalnum(c) || (c == '_')) {	/* INTL: ISO only, UCHAR. */
+		src += offset;
+		numBytes -= offset;
 		continue;
 	    }
 	    if ((c == ':') && (numBytes != 1) && (src[1] == ':')) {
-		src += 2; numBytes -= 2;
+		src += 2;
+		numBytes -= 2;
 		while (numBytes && (*src == ':')) {
-		    src++; numBytes--; 
+		    src++;
+		    numBytes--;
 		}
 		continue;
 	    }
@@ -1203,6 +1458,7 @@ Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
 	/*
 	 * Support for empty array names here.
 	 */
+
 	array = (numBytes && (*src == '('));
 	tokenPtr->size = src - tokenPtr->start;
 	if ((tokenPtr->size == 0) && !array) {
@@ -1211,17 +1467,16 @@ Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
 	parsePtr->numTokens++;
 	if (array) {
 	    /*
-	     * This is a reference to an array element.  Call
-	     * ParseTokens recursively to parse the element name,
-	     * since it could contain any number of substitutions.
+	     * This is a reference to an array element. Call ParseTokens
+	     * recursively to parse the element name, since it could contain
+	     * any number of substitutions.
 	     */
 
-	    if (ParseTokens(src+1, numBytes-1, TYPE_CLOSE_PAREN, parsePtr)
-		    != TCL_OK) {
+	    if (TCL_OK != ParseTokens(src+1, numBytes-1, TYPE_CLOSE_PAREN,
+		    TCL_SUBST_ALL, parsePtr)) {
 		goto error;
 	    }
-	    if ((parsePtr->term == (src + numBytes)) 
-		    || (*parsePtr->term != ')')) { 
+	    if ((parsePtr->term == src+numBytes) || (*parsePtr->term != ')')){
 		if (parsePtr->interp != NULL) {
 		    Tcl_SetResult(parsePtr->interp, "missing )",
 			    TCL_STATIC);
@@ -1240,38 +1495,37 @@ Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
     return TCL_OK;
 
     /*
-     * The dollar sign isn't followed by a variable name.
-     * replace the TCL_TOKEN_VARIABLE token with a
-     * TCL_TOKEN_TEXT token for the dollar sign.
+     * The dollar sign isn't followed by a variable name. Replace the
+     * TCL_TOKEN_VARIABLE token with a TCL_TOKEN_TEXT token for the dollar
+     * sign.
      */
 
-    justADollarSign:
+  justADollarSign:
     tokenPtr = &parsePtr->tokenPtr[varIndex];
     tokenPtr->type = TCL_TOKEN_TEXT;
     tokenPtr->size = 1;
     tokenPtr->numComponents = 0;
     return TCL_OK;
 
-    error:
+  error:
     Tcl_FreeParse(parsePtr);
     return TCL_ERROR;
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_ParseVar --
  *
- *	Given a string starting with a $ sign, parse off a variable
- *	name and return its value.
+ *	Given a string starting with a $ sign, parse off a variable name and
+ *	return its value.
  *
  * Results:
- *	The return value is the contents of the variable given by
- *	the leading characters of string.  If termPtr isn't NULL,
- *	*termPtr gets filled in with the address of the character
- *	just after the last one in the variable specifier.  If the
- *	variable doesn't exist, then the return value is NULL and
- *	an error message will be left in interp's result.
+ *	The return value is the contents of the variable given by the leading
+ *	characters of string. If termPtr isn't NULL, *termPtr gets filled in
+ *	with the address of the character just after the last one in the
+ *	variable specifier. If the variable doesn't exist, then the return
+ *	value is NULL and an error message will be left in interp's result.
  *
  * Side effects:
  *	None.
@@ -1279,50 +1533,54 @@ Tcl_ParseVarName(interp, string, numBytes, parsePtr, append)
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_ParseVar(interp, string, termPtr)
-    Tcl_Interp *interp;			/* Context for looking up variable. */
-    register CONST char *string;	/* String containing variable name.
-					 * First character must be "$". */
-    CONST char **termPtr;		/* If non-NULL, points to word to fill
-					 * in with character just after last
-					 * one in the variable specifier. */
-
+const char *
+Tcl_ParseVar(
+    Tcl_Interp *interp,		/* Context for looking up variable. */
+    register const char *start,	/* Start of variable substitution. First
+				 * character must be "$". */
+    const char **termPtr)	/* If non-NULL, points to word to fill in with
+				 * character just after last one in the
+				 * variable specifier. */
 {
-    Tcl_Parse parse;
     register Tcl_Obj *objPtr;
     int code;
+    Tcl_Parse *parsePtr = (Tcl_Parse *)
+	    TclStackAlloc(interp, sizeof(Tcl_Parse));
 
-    if (Tcl_ParseVarName(interp, string, -1, &parse, 0) != TCL_OK) {
+    if (Tcl_ParseVarName(interp, start, -1, parsePtr, 0) != TCL_OK) {
+	TclStackFree(interp, parsePtr);
 	return NULL;
     }
 
     if (termPtr != NULL) {
-	*termPtr = string + parse.tokenPtr->size;
+	*termPtr = start + parsePtr->tokenPtr->size;
     }
-    if (parse.numTokens == 1) {
+    if (parsePtr->numTokens == 1) {
 	/*
 	 * There isn't a variable name after all: the $ is just a $.
 	 */
 
+	TclStackFree(interp, parsePtr);
 	return "$";
     }
 
-    code = Tcl_EvalTokensStandard(interp, parse.tokenPtr, parse.numTokens);
+    code = TclSubstTokens(interp, parsePtr->tokenPtr, parsePtr->numTokens,
+	    NULL, 1, NULL, NULL);
+    TclStackFree(interp, parsePtr);
     if (code != TCL_OK) {
 	return NULL;
     }
     objPtr = Tcl_GetObjResult(interp);
 
     /*
-     * At this point we should have an object containing the value of
-     * a variable.  Just return the string from that object.
+     * At this point we should have an object containing the value of a
+     * variable. Just return the string from that object.
      *
      * This should have returned the object for the user to manage, but
-     * instead we have some weak reference to the string value in the
-     * object, which is why we make sure the object exists after resetting
-     * the result.  This isn't ideal, but it's the best we can do with the
-     * current documented interface. -- hobbs
+     * instead we have some weak reference to the string value in the object,
+     * which is why we make sure the object exists after resetting the result.
+     * This isn't ideal, but it's the best we can do with the current
+     * documented interface. -- hobbs
      */
 
     if (!Tcl_IsShared(objPtr)) {
@@ -1331,87 +1589,75 @@ Tcl_ParseVar(interp, string, termPtr)
     Tcl_ResetResult(interp);
     return TclGetString(objPtr);
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_ParseBraces --
  *
  *	Given a string in braces such as a Tcl command argument or a string
- *	value in a Tcl expression, this procedure parses the string and
- *	returns information about the parse.  No more than numBytes bytes
- *	will be scanned.
+ *	value in a Tcl expression, this function parses the string and returns
+ *	information about the parse. No more than numBytes bytes will be
+ *	scanned.
  *
  * Results:
  *	The return value is TCL_OK if the string was parsed successfully and
- *	TCL_ERROR otherwise. If an error occurs and interp isn't NULL then
- *	an error message is left in its result. On a successful return,
- *	tokenPtr and numTokens fields of parsePtr are filled in with
- *	information about the string that was parsed. Other fields in
- *	parsePtr are undefined. termPtr is set to point to the character
- *	just after the last one in the braced string.
+ *	TCL_ERROR otherwise. If an error occurs and interp isn't NULL then an
+ *	error message is left in its result. On a successful return, tokenPtr
+ *	and numTokens fields of parsePtr are filled in with information about
+ *	the string that was parsed. Other fields in parsePtr are undefined.
+ *	termPtr is set to point to the character just after the last one in
+ *	the braced string.
  *
  * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the command, then additional space is
- *	malloc-ed. If the procedure returns TCL_OK then the caller must
- *	eventually invoke Tcl_FreeParse to release any additional space
- *	that was allocated.
+ *	If there is insufficient space in parsePtr to hold all the information
+ *	about the command, then additional space is malloc-ed. If the function
+ *	returns TCL_OK then the caller must eventually invoke Tcl_FreeParse to
+ *	release any additional space that was allocated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ParseBraces(interp, string, numBytes, parsePtr, append, termPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting;
-				 * if NULL, then no error message is
-				 * provided. */
-    CONST char *string;		/* String containing the string in braces.
-				 * The first character must be '{'. */
-    register int numBytes;	/* Total number of bytes in string. If < 0,
-				 * the string consists of all bytes up to
-				 * the first null character. */
-    register Tcl_Parse *parsePtr;
-    				/* Structure to fill in with information
-				 * about the string. */
-    int append;			/* Non-zero means append tokens to existing
-				 * information in parsePtr; zero means
-				 * ignore existing tokens in parsePtr and
+Tcl_ParseBraces(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting; if
+				 * NULL, then no error message is provided. */
+    const char *start,		/* Start of string enclosed in braces. The
+				 * first character must be {'. */
+    register int numBytes,	/* Total number of bytes in string. If < 0,
+				 * the string consists of all bytes up to the
+				 * first null character. */
+    register Tcl_Parse *parsePtr,
+    				/* Structure to fill in with information about
+				 * the string. */
+    int append,			/* Non-zero means append tokens to existing
+				 * information in parsePtr; zero means ignore
+				 * existing tokens in parsePtr and
 				 * reinitialize it. */
-    CONST char **termPtr;	/* If non-NULL, points to word in which to
-				 * store a pointer to the character just
-				 * after the terminating '}' if the parse
-				 * was successful. */
-
+    const char **termPtr)	/* If non-NULL, points to word in which to
+				 * store a pointer to the character just after
+				 * the terminating '}' if the parse was
+				 * successful. */
 {
     Tcl_Token *tokenPtr;
-    register CONST char *src;
+    register const char *src;
     int startIndex, level, length;
 
-    if ((numBytes == 0) || (string == NULL)) {
+    if ((numBytes == 0) || (start == NULL)) {
 	return TCL_ERROR;
     }
     if (numBytes < 0) {
-	numBytes = strlen(string);
+	numBytes = strlen(start);
     }
 
     if (!append) {
-	parsePtr->numWords = 0;
-	parsePtr->tokenPtr = parsePtr->staticTokens;
-	parsePtr->numTokens = 0;
-	parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
-	parsePtr->string = string;
-	parsePtr->end = (string + numBytes);
-	parsePtr->interp = interp;
-	parsePtr->errorType = TCL_PARSE_SUCCESS;
+	TclParseInit(interp, start, numBytes, parsePtr);
     }
 
-    src = string;
+    src = start;
     startIndex = parsePtr->numTokens;
 
-    if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	TclExpandTokenArray(parsePtr);
-    }
+    TclGrowParseTokenArray(parsePtr, 1);
     tokenPtr = &parsePtr->tokenPtr[startIndex];
     tokenPtr->type = TCL_TOKEN_TEXT;
     tokenPtr->start = src+1;
@@ -1424,195 +1670,189 @@ Tcl_ParseBraces(interp, string, numBytes, parsePtr, append, termPtr)
 	    }
 	}
 	if (numBytes == 0) {
-	    register int openBrace = 0;
+	    goto missingBraceError;
+	}
 
-	    parsePtr->errorType = TCL_PARSE_MISSING_BRACE;
-	    parsePtr->term = string;
-	    parsePtr->incomplete = 1;
-	    if (parsePtr->interp == NULL) {
+	switch (*src) {
+	case '{':
+	    level++;
+	    break;
+	case '}':
+	    if (--level == 0) {
 		/*
-		 * Skip straight to the exit code since we have no
-		 * interpreter to put error message in.
+		 * Decide if we need to finish emitting a partially-finished
+		 * token. There are 3 cases:
+		 *     {abc \newline xyz} or {xyz}
+		 *		- finish emitting "xyz" token
+		 *     {abc \newline}
+		 *		- don't emit token after \newline
+		 *     {}	- finish emitting zero-sized token
+		 *
+		 * The last case ensures that there is a token (even if empty)
+		 * that describes the braced string.
 		 */
-		goto error;
-	    }
-
-	    Tcl_SetResult(parsePtr->interp, "missing close-brace", TCL_STATIC);
-
-	    /*
-	     *  Guess if the problem is due to comments by searching
-	     *  the source string for a possible open brace within the
-	     *  context of a comment.  Since we aren't performing a
-	     *  full Tcl parse, just look for an open brace preceded
-	     *  by a '<whitespace>#' on the same line.
-	     */
 
-	    while (--src > string) {
-		switch (*src) {
-		    case '{':
-			openBrace = 1;
-			break;
-		    case '\n':
-			openBrace = 0;
-			break;
-		    case '#' :
-			if (openBrace && (isspace(UCHAR(src[-1])))) {
-			    Tcl_AppendResult(parsePtr->interp,
-				    ": possible unbalanced brace in comment",
-				    (char *) NULL);
-			    goto error;
-			}
-			break;
+		if ((src != tokenPtr->start)
+			|| (parsePtr->numTokens == startIndex)) {
+		    tokenPtr->size = (src - tokenPtr->start);
+		    parsePtr->numTokens++;
 		}
+		if (termPtr != NULL) {
+		    *termPtr = src+1;
+		}
+		return TCL_OK;
 	    }
+	    break;
+	case '\\':
+	    TclParseBackslash(src, numBytes, &length, NULL);
+	    if ((length > 1) && (src[1] == '\n')) {
+		/*
+		 * A backslash-newline sequence must be collapsed, even inside
+		 * braces, so we have to split the word into multiple tokens
+		 * so that the backslash-newline can be represented
+		 * explicitly.
+		 */
 
-	    error:
-	    Tcl_FreeParse(parsePtr);
-	    return TCL_ERROR;
+		if (numBytes == 2) {
+		    parsePtr->incomplete = 1;
+		}
+		tokenPtr->size = (src - tokenPtr->start);
+		if (tokenPtr->size != 0) {
+		    parsePtr->numTokens++;
+		}
+		TclGrowParseTokenArray(parsePtr, 2);
+		tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
+		tokenPtr->type = TCL_TOKEN_BS;
+		tokenPtr->start = src;
+		tokenPtr->size = length;
+		tokenPtr->numComponents = 0;
+		parsePtr->numTokens++;
+
+		src += length - 1;
+		numBytes -= length - 1;
+		tokenPtr++;
+		tokenPtr->type = TCL_TOKEN_TEXT;
+		tokenPtr->start = src + 1;
+		tokenPtr->numComponents = 0;
+	    } else {
+		src += length - 1;
+		numBytes -= length - 1;
+	    }
+	    break;
 	}
-	switch (*src) {
+    }
+
+  missingBraceError:
+    parsePtr->errorType = TCL_PARSE_MISSING_BRACE;
+    parsePtr->term = start;
+    parsePtr->incomplete = 1;
+    if (parsePtr->interp == NULL) {
+	/*
+	 * Skip straight to the exit code since we have no interpreter to put
+	 * error message in.
+	 */
+
+	goto error;
+    }
+
+    Tcl_SetResult(parsePtr->interp, "missing close-brace", TCL_STATIC);
+
+    /*
+     * Guess if the problem is due to comments by searching the source string
+     * for a possible open brace within the context of a comment. Since we
+     * aren't performing a full Tcl parse, just look for an open brace
+     * preceded by a '<whitespace>#' on the same line.
+     */
+
+    {
+	register int openBrace = 0;
+
+	while (--src > start) {
+	    switch (*src) {
 	    case '{':
-		level++;
+		openBrace = 1;
 		break;
-	    case '}':
-		if (--level == 0) {
-
-		    /*
-		     * Decide if we need to finish emitting a
-		     * partially-finished token.  There are 3 cases:
-		     *     {abc \newline xyz} or {xyz}
-		     *		- finish emitting "xyz" token
-		     *     {abc \newline}
-		     *		- don't emit token after \newline
-		     *     {}	- finish emitting zero-sized token
-		     *
-		     * The last case ensures that there is a token
-		     * (even if empty) that describes the braced string.
-		     */
-    
-		    if ((src != tokenPtr->start)
-			    || (parsePtr->numTokens == startIndex)) {
-			tokenPtr->size = (src - tokenPtr->start);
-			parsePtr->numTokens++;
-		    }
-		    if (termPtr != NULL) {
-			*termPtr = src+1;
-		    }
-		    return TCL_OK;
-		}
+	    case '\n':
+		openBrace = 0;
 		break;
-	    case '\\':
-		TclParseBackslash(src, numBytes, &length, NULL);
-		if ((length > 1) && (src[1] == '\n')) {
-		    /*
-		     * A backslash-newline sequence must be collapsed, even
-		     * inside braces, so we have to split the word into
-		     * multiple tokens so that the backslash-newline can be
-		     * represented explicitly.
-		     */
-		
-		    if (numBytes == 2) {
-			parsePtr->incomplete = 1;
-		    }
-		    tokenPtr->size = (src - tokenPtr->start);
-		    if (tokenPtr->size != 0) {
-			parsePtr->numTokens++;
-		    }
-		    if ((parsePtr->numTokens+1) >= parsePtr->tokensAvailable) {
-			TclExpandTokenArray(parsePtr);
-		    }
-		    tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
-		    tokenPtr->type = TCL_TOKEN_BS;
-		    tokenPtr->start = src;
-		    tokenPtr->size = length;
-		    tokenPtr->numComponents = 0;
-		    parsePtr->numTokens++;
-		
-		    src += length - 1;
-		    numBytes -= length - 1;
-		    tokenPtr++;
-		    tokenPtr->type = TCL_TOKEN_TEXT;
-		    tokenPtr->start = src + 1;
-		    tokenPtr->numComponents = 0;
-		} else {
-		    src += length - 1;
-		    numBytes -= length - 1;
+	    case '#' :
+		if (openBrace && TclIsSpaceProc(src[-1])) {
+		    Tcl_AppendResult(parsePtr->interp,
+			    ": possible unbalanced brace in comment", NULL);
+		    goto error;
 		}
 		break;
+	    }
 	}
     }
-}
 
+  error:
+    Tcl_FreeParse(parsePtr);
+    return TCL_ERROR;
+}
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_ParseQuotedString --
  *
- *	Given a double-quoted string such as a quoted Tcl command argument
- *	or a quoted value in a Tcl expression, this procedure parses the
- *	string and returns information about the parse.  No more than
- *	numBytes bytes will be scanned.
+ *	Given a double-quoted string such as a quoted Tcl command argument or
+ *	a quoted value in a Tcl expression, this function parses the string
+ *	and returns information about the parse. No more than numBytes bytes
+ *	will be scanned.
  *
  * Results:
  *	The return value is TCL_OK if the string was parsed successfully and
- *	TCL_ERROR otherwise. If an error occurs and interp isn't NULL then
- *	an error message is left in its result. On a successful return,
- *	tokenPtr and numTokens fields of parsePtr are filled in with
- *	information about the string that was parsed. Other fields in
- *	parsePtr are undefined. termPtr is set to point to the character
- *	just after the quoted string's terminating close-quote.
+ *	TCL_ERROR otherwise. If an error occurs and interp isn't NULL then an
+ *	error message is left in its result. On a successful return, tokenPtr
+ *	and numTokens fields of parsePtr are filled in with information about
+ *	the string that was parsed. Other fields in parsePtr are undefined.
+ *	termPtr is set to point to the character just after the quoted
+ *	string's terminating close-quote.
  *
  * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the command, then additional space is
- *	malloc-ed. If the procedure returns TCL_OK then the caller must
- *	eventually invoke Tcl_FreeParse to release any additional space
- *	that was allocated.
+ *	If there is insufficient space in parsePtr to hold all the information
+ *	about the command, then additional space is malloc-ed. If the function
+ *	returns TCL_OK then the caller must eventually invoke Tcl_FreeParse to
+ *	release any additional space that was allocated.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_ParseQuotedString(interp, string, numBytes, parsePtr, append, termPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting;
-				 * if NULL, then no error message is
-				 * provided. */
-    CONST char *string;		/* String containing the quoted string. 
-				 * The first character must be '"'. */
-    register int numBytes;	/* Total number of bytes in string. If < 0,
-				 * the string consists of all bytes up to
-				 * the first null character. */
-    register Tcl_Parse *parsePtr;
-    				/* Structure to fill in with information
-				 * about the string. */
-    int append;			/* Non-zero means append tokens to existing
-				 * information in parsePtr; zero means
-				 * ignore existing tokens in parsePtr and
+Tcl_ParseQuotedString(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting; if
+				 * NULL, then no error message is provided. */
+    const char *start,		/* Start of the quoted string. The first
+				 * character must be '"'. */
+    register int numBytes,	/* Total number of bytes in string. If < 0,
+				 * the string consists of all bytes up to the
+				 * first null character. */
+    register Tcl_Parse *parsePtr,
+    				/* Structure to fill in with information about
+				 * the string. */
+    int append,			/* Non-zero means append tokens to existing
+				 * information in parsePtr; zero means ignore
+				 * existing tokens in parsePtr and
 				 * reinitialize it. */
-    CONST char **termPtr;	/* If non-NULL, points to word in which to
-				 * store a pointer to the character just
-				 * after the quoted string's terminating
-				 * close-quote if the parse succeeds. */
+    const char **termPtr)	/* If non-NULL, points to word in which to
+				 * store a pointer to the character just after
+				 * the quoted string's terminating close-quote
+				 * if the parse succeeds. */
 {
-    if ((numBytes == 0) || (string == NULL)) {
+    if ((numBytes == 0) || (start == NULL)) {
 	return TCL_ERROR;
     }
     if (numBytes < 0) {
-	numBytes = strlen(string);
+	numBytes = strlen(start);
     }
 
     if (!append) {
-	parsePtr->numWords = 0;
-	parsePtr->tokenPtr = parsePtr->staticTokens;
-	parsePtr->numTokens = 0;
-	parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
-	parsePtr->string = string;
-	parsePtr->end = (string + numBytes);
-	parsePtr->interp = interp;
-	parsePtr->errorType = TCL_PARSE_SUCCESS;
+	TclParseInit(interp, start, numBytes, parsePtr);
     }
-    
-    if (ParseTokens(string+1, numBytes-1, TYPE_QUOTE, parsePtr) != TCL_OK) {
+
+    if (TCL_OK != ParseTokens(start+1, numBytes-1, TYPE_QUOTE, TCL_SUBST_ALL,
+	    parsePtr)) {
 	goto error;
     }
     if (*parsePtr->term != '"') {
@@ -1620,7 +1860,7 @@ Tcl_ParseQuotedString(interp, string, numBytes, parsePtr, append, termPtr)
 	    Tcl_SetResult(parsePtr->interp, "missing \"", TCL_STATIC);
 	}
 	parsePtr->errorType = TCL_PARSE_MISSING_QUOTE;
-	parsePtr->term = string;
+	parsePtr->term = start;
 	parsePtr->incomplete = 1;
 	goto error;
     }
@@ -1629,24 +1869,579 @@ Tcl_ParseQuotedString(interp, string, numBytes, parsePtr, append, termPtr)
     }
     return TCL_OK;
 
-    error:
+  error:
     Tcl_FreeParse(parsePtr);
     return TCL_ERROR;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SubstObj --
+ *
+ *	This function performs the substitutions specified on the given string
+ *	as described in the user documentation for the "subst" Tcl command.
+ *
+ * Results:
+ *	A Tcl_Obj* containing the substituted string, or NULL to indicate that
+ *	an error occurred.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_SubstObj(
+    Tcl_Interp *interp,		/* Interpreter in which substitution occurs */
+    Tcl_Obj *objPtr,		/* The value to be substituted. */
+    int flags)			/* What substitutions to do. */
+{
+    int length, tokensLeft, code;
+    Tcl_Token *endTokenPtr;
+    Tcl_Obj *result, *errMsg = NULL;
+    const char *p = TclGetStringFromObj(objPtr, &length);
+    Tcl_Parse *parsePtr = (Tcl_Parse *)
+	    TclStackAlloc(interp, sizeof(Tcl_Parse));
+
+    TclParseInit(interp, p, length, parsePtr);
+
+    /*
+     * First parse the string rep of objPtr, as if it were enclosed as a
+     * "-quoted word in a normal Tcl command. Honor flags that selectively
+     * inhibit types of substitution.
+     */
+
+    if (TCL_OK != ParseTokens(p, length, /* mask */ 0, flags, parsePtr)) {
+	/*
+	 * There was a parse error. Save the error message for possible
+	 * reporting later.
+	 */
+
+	errMsg = Tcl_GetObjResult(interp);
+	Tcl_IncrRefCount(errMsg);
+
+	/*
+	 * We need to re-parse to get the portion of the string we can [subst]
+	 * before the parse error. Sadly, all the Tcl_Token's created by the
+	 * first parse attempt are gone, freed according to the public spec
+	 * for the Tcl_Parse* routines. The only clue we have is parse.term,
+	 * which points to either the unmatched opener, or to characters that
+	 * follow a close brace or close quote.
+	 *
+	 * Call ParseTokens again, working on the string up to parse.term.
+	 * Keep repeating until we get a good parse on a prefix.
+	 */
+
+	do {
+	    parsePtr->numTokens = 0;
+	    parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
+	    parsePtr->end = parsePtr->term;
+	    parsePtr->incomplete = 0;
+	    parsePtr->errorType = TCL_PARSE_SUCCESS;
+	} while (TCL_OK !=
+		ParseTokens(p, parsePtr->end - p, 0, flags, parsePtr));
+
+	/*
+	 * The good parse will have to be followed by {, (, or [.
+	 */
+
+	switch (*(parsePtr->term)) {
+	case '{':
+	    /*
+	     * Parse error was a missing } in a ${varname} variable
+	     * substitution at the toplevel. We will subst everything up to
+	     * that broken variable substitution before reporting the parse
+	     * error. Substituting the leftover '$' will have no side-effects,
+	     * so the current token stream is fine.
+	     */
+	    break;
+
+	case '(':
+	    /*
+	     * Parse error was during the parsing of the index part of an
+	     * array variable substitution at the toplevel.
+	     */
+
+	    if (*(parsePtr->term - 1) == '$') {
+		/*
+		 * Special case where removing the array index left us with
+		 * just a dollar sign (array variable with name the empty
+		 * string as its name), instead of with a scalar variable
+		 * reference.
+		 *
+		 * As in the previous case, existing token stream is OK.
+		 */
+	    } else {
+		/*
+		 * The current parse includes a successful parse of a scalar
+		 * variable substitution where there should have been an array
+		 * variable substitution. We remove that mistaken part of the
+		 * parse before moving on. A scalar variable substitution is
+		 * two tokens.
+		 */
+
+		Tcl_Token *varTokenPtr =
+			parsePtr->tokenPtr + parsePtr->numTokens - 2;
+
+		if (varTokenPtr->type != TCL_TOKEN_VARIABLE) {
+		    Tcl_Panic("Tcl_SubstObj: programming error");
+		}
+		if (varTokenPtr[1].type != TCL_TOKEN_TEXT) {
+		    Tcl_Panic("Tcl_SubstObj: programming error");
+		}
+		parsePtr->numTokens -= 2;
+	    }
+	    break;
+	case '[':
+	    /*
+	     * Parse error occurred during parsing of a toplevel command
+	     * substitution.
+	     */
+
+	    parsePtr->end = p + length;
+	    p = parsePtr->term + 1;
+	    length = parsePtr->end - p;
+	    if (length == 0) {
+		/*
+		 * No commands, just an unmatched [. As in previous cases,
+		 * existing token stream is OK.
+		 */
+	    } else {
+		/*
+		 * We want to add the parsing of as many commands as we can
+		 * within that substitution until we reach the actual parse
+		 * error. We'll do additional parsing to determine what length
+		 * to claim for the final TCL_TOKEN_COMMAND token.
+		 */
+
+		Tcl_Token *tokenPtr;
+		const char *lastTerm = parsePtr->term;
+		Tcl_Parse *nestedPtr = (Tcl_Parse *)
+			TclStackAlloc(interp, sizeof(Tcl_Parse));
+
+		while (TCL_OK ==
+			Tcl_ParseCommand(NULL, p, length, 0, nestedPtr)) {
+		    Tcl_FreeParse(nestedPtr);
+		    p = nestedPtr->term + (nestedPtr->term < nestedPtr->end);
+		    length = nestedPtr->end - p;
+		    if ((length == 0) && (nestedPtr->term == nestedPtr->end)) {
+			/*
+			 * If we run out of string, blame the missing close
+			 * bracket on the last command, and do not evaluate it
+			 * during substitution.
+			 */
+
+			break;
+		    }
+		    lastTerm = nestedPtr->term;
+		}
+		TclStackFree(interp, nestedPtr);
+
+		if (lastTerm == parsePtr->term) {
+		    /*
+		     * Parse error in first command. No commands to subst, add
+		     * no more tokens.
+		     */
+		    break;
+		}
+
+		/*
+		 * Create a command substitution token for whatever commands
+		 * got parsed.
+		 */
+
+		TclGrowParseTokenArray(parsePtr, 1);
+		tokenPtr = &(parsePtr->tokenPtr[parsePtr->numTokens]);
+		tokenPtr->start = parsePtr->term;
+		tokenPtr->numComponents = 0;
+		tokenPtr->type = TCL_TOKEN_COMMAND;
+		tokenPtr->size = lastTerm - tokenPtr->start + 1;
+		parsePtr->numTokens++;
+	    }
+	    break;
+
+	default:
+	    Tcl_Panic("bad parse in Tcl_SubstObj: %c", p[length]);
+	}
+    }
 
+    /*
+     * Next, substitute the parsed tokens just as in normal Tcl evaluation.
+     */
+
+    endTokenPtr = parsePtr->tokenPtr + parsePtr->numTokens;
+    tokensLeft = parsePtr->numTokens;
+    code = TclSubstTokens(interp, endTokenPtr - tokensLeft, tokensLeft,
+	    &tokensLeft, 1, NULL, NULL);
+    if (code == TCL_OK) {
+	Tcl_FreeParse(parsePtr);
+	TclStackFree(interp, parsePtr);
+	if (errMsg != NULL) {
+	    Tcl_SetObjResult(interp, errMsg);
+	    Tcl_DecrRefCount(errMsg);
+	    return NULL;
+	}
+	return Tcl_GetObjResult(interp);
+    }
+
+    result = Tcl_NewObj();
+    while (1) {
+	switch (code) {
+	case TCL_ERROR:
+	    Tcl_FreeParse(parsePtr);
+	    TclStackFree(interp, parsePtr);
+	    Tcl_DecrRefCount(result);
+	    if (errMsg != NULL) {
+		Tcl_DecrRefCount(errMsg);
+	    }
+	    return NULL;
+	case TCL_BREAK:
+	    tokensLeft = 0;		/* Halt substitution */
+	default:
+	    Tcl_AppendObjToObj(result, Tcl_GetObjResult(interp));
+	}
+
+	if (tokensLeft == 0) {
+	    Tcl_FreeParse(parsePtr);
+	    TclStackFree(interp, parsePtr);
+	    if (errMsg != NULL) {
+		if (code != TCL_BREAK) {
+		    Tcl_DecrRefCount(result);
+		    Tcl_SetObjResult(interp, errMsg);
+		    Tcl_DecrRefCount(errMsg);
+		    return NULL;
+		}
+		Tcl_DecrRefCount(errMsg);
+	    }
+	    return result;
+	}
+
+	code = TclSubstTokens(interp, endTokenPtr - tokensLeft, tokensLeft,
+		&tokensLeft, 1, NULL, NULL);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSubstTokens --
+ *
+ *	Accepts an array of count Tcl_Token's, and creates a result value in
+ *	the interp from concatenating the results of performing Tcl
+ *	substitution on each Tcl_Token. Substitution is interrupted if any
+ *	non-TCL_OK completion code arises.
+ *
+ * Results:
+ * 	The return value is a standard Tcl completion code. The result in
+ * 	interp is the substituted value, or an error message if TCL_ERROR is
+ * 	returned. If tokensLeftPtr is not NULL, then it points to an int where
+ * 	the number of tokens remaining to be processed is written.
+ *
+ * Side effects:
+ * 	Can be anything, depending on the types of substitution done.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclSubstTokens(
+    Tcl_Interp *interp,		/* Interpreter in which to lookup variables,
+				 * execute nested commands, and report
+				 * errors. */
+    Tcl_Token *tokenPtr,	/* Pointer to first in an array of tokens to
+				 * evaluate and concatenate. */
+    int count,			/* Number of tokens to consider at tokenPtr.
+				 * Must be at least 1. */
+    int *tokensLeftPtr,		/* If not NULL, points to memory where an
+				 * integer representing the number of tokens
+				 * left to be substituted will be written */
+    int line,			/* The line the script starts on. */
+    int*  clNextOuter,       /* Information about an outer context for */
+    CONST char* outerScript) /* continuation line data. This is set by
+			      * EvalEx() to properly handle [...]-nested
+			      * commands. The 'outerScript' refers to the
+			      * most-outer script containing the embedded
+			      * command, which is refered to by 'script'. The
+			      * 'clNextOuter' refers to the current entry in
+			      * the table of continuation lines in this
+			      * "master script", and the character offsets are
+			      * relative to the 'outerScript' as well.
+			      *
+			      * If outerScript == script, then this call is for
+			      * words in the outer-most script/command. See
+			      * Tcl_EvalEx() and TclEvalObjEx() for the places
+			      * generating arguments for which this is true.
+			      */
+{
+    Tcl_Obj *result;
+    int code = TCL_OK;
+#define NUM_STATIC_POS 20
+    int isLiteral, maxNumCL, numCL, i, adjust;
+    int* clPosition = NULL;
+    Interp* iPtr = (Interp*) interp;
+    int inFile = iPtr->evalFlags & TCL_EVAL_FILE;
+
+    /*
+     * Each pass through this loop will substitute one token, and its
+     * components, if any. The only thing tricky here is that we go to some
+     * effort to pass Tcl_Obj's through untouched, to avoid string copying and
+     * Tcl_Obj creation if possible, to aid performance and limit shimmering.
+     *
+     * Further optimization opportunities might be to check for the equivalent
+     * of Tcl_SetObjResult(interp, Tcl_GetObjResult(interp)) and omit them.
+     */
+
+    /*
+     * For the handling of continuation lines in literals we first check if
+     * this is actually a literal. For if not we can forego the additional
+     * processing. Otherwise we pre-allocate a small table to store the
+     * locations of all continuation lines we find in this literal, if
+     * any. The table is extended if needed.
+     */
+
+    numCL     = 0;
+    maxNumCL  = 0;
+    isLiteral = 1;
+    for (i=0 ; i < count; i++) {
+	if ((tokenPtr[i].type != TCL_TOKEN_TEXT) &&
+	    (tokenPtr[i].type != TCL_TOKEN_BS)) {
+	    isLiteral = 0;
+	    break;
+	}
+    }
+
+    if (isLiteral) {
+	maxNumCL   = NUM_STATIC_POS;
+	clPosition = (int*) ckalloc (maxNumCL*sizeof(int));
+    }
+
+    adjust = 0;
+    result = NULL;
+    for (; count>0 && code==TCL_OK ; count--, tokenPtr++) {
+	Tcl_Obj *appendObj = NULL;
+	const char *append = NULL;
+	int appendByteLength = 0;
+	char utfCharBytes[TCL_UTF_MAX];
+
+	switch (tokenPtr->type) {
+	case TCL_TOKEN_TEXT:
+	    append = tokenPtr->start;
+	    appendByteLength = tokenPtr->size;
+	    break;
+
+	case TCL_TOKEN_BS:
+	    appendByteLength = TclParseBackslash(tokenPtr->start,
+		    tokenPtr->size, NULL, utfCharBytes);
+	    append = utfCharBytes;
+	    /*
+	     * If the backslash sequence we found is in a literal, and
+	     * represented a continuation line, we compute and store its
+	     * location (as char offset to the beginning of the _result_
+	     * script). We may have to extend the table of locations.
+	     *
+	     * Note that the continuation line information is relevant even if
+	     * the word we are processing is not a literal, as it can affect
+	     * nested commands. See the branch for TCL_TOKEN_COMMAND below,
+	     * where the adjustment we are tracking here is taken into
+	     * account. The good thing is that we do not need a table of
+	     * everything, just the number of lines we have to add as
+	     * correction.
+	     */
+
+	    if ((appendByteLength == 1) && (utfCharBytes[0] == ' ') &&
+		(tokenPtr->start[1] == '\n')) {
+		if (isLiteral) {
+		    int clPos;
+		    if (result == 0) {
+			clPos = 0;
+		    } else {
+			Tcl_GetStringFromObj(result, &clPos);
+		    }
+
+		    if (numCL >= maxNumCL) {
+			maxNumCL *= 2;
+			clPosition = (int*) ckrealloc ((char*)clPosition,
+						       maxNumCL*sizeof(int));
+		    }
+		    clPosition[numCL] = clPos;
+		    numCL ++;
+		}
+		adjust ++;
+	    }
+	    break;
+
+	case TCL_TOKEN_COMMAND: {
+	    Interp *iPtr = (Interp *) interp;
+
+	    iPtr->numLevels++;
+	    code = TclInterpReady(interp);
+	    if (code == TCL_OK) {
+		/*
+		 * Test cases: info-30.{6,8,9}
+		 */
+
+		int theline;
+		TclAdvanceContinuations (&line, &clNextOuter,
+					 tokenPtr->start - outerScript);
+		theline = line + adjust;
+		/* TIP #280: Transfer line information to nested command */
+		code = TclEvalEx(interp, tokenPtr->start+1, tokenPtr->size-2,
+			0, theline, clNextOuter, outerScript);
+		/*
+		 * Restore flag reset by nested eval for future bracketed
+		 * commands and their cmdframe setup
+		 */
+	        if (inFile) {
+		    iPtr->evalFlags |= TCL_EVAL_FILE;
+		}
+	    }
+	    iPtr->numLevels--;
+	    appendObj = Tcl_GetObjResult(interp);
+	    break;
+	}
+
+	case TCL_TOKEN_VARIABLE: {
+	    Tcl_Obj *arrayIndex = NULL;
+	    Tcl_Obj *varName = NULL;
+
+	    if (tokenPtr->numComponents > 1) {
+		/*
+		 * Subst the index part of an array variable reference.
+		 */
+
+		code = TclSubstTokens(interp, tokenPtr+2,
+			tokenPtr->numComponents - 1, NULL, line, NULL, NULL);
+		arrayIndex = Tcl_GetObjResult(interp);
+		Tcl_IncrRefCount(arrayIndex);
+	    }
+
+	    if (code == TCL_OK) {
+		varName = Tcl_NewStringObj(tokenPtr[1].start,
+			tokenPtr[1].size);
+		appendObj = Tcl_ObjGetVar2(interp, varName, arrayIndex,
+			TCL_LEAVE_ERR_MSG);
+		Tcl_DecrRefCount(varName);
+		if (appendObj == NULL) {
+		    code = TCL_ERROR;
+		}
+	    }
+
+	    switch (code) {
+	    case TCL_OK:	/* Got value */
+	    case TCL_ERROR:	/* Already have error message */
+	    case TCL_BREAK:	/* Will not substitute anyway */
+	    case TCL_CONTINUE:	/* Will not substitute anyway */
+		break;
+	    default:
+		/*
+		 * All other return codes, we will subst the result from the
+		 * code-throwing evaluation.
+		 */
+
+		appendObj = Tcl_GetObjResult(interp);
+	    }
+
+	    if (arrayIndex != NULL) {
+		Tcl_DecrRefCount(arrayIndex);
+	    }
+	    count -= tokenPtr->numComponents;
+	    tokenPtr += tokenPtr->numComponents;
+	    break;
+	}
+
+	default:
+	    Tcl_Panic("unexpected token type in TclSubstTokens: %d",
+		    tokenPtr->type);
+	}
+
+	if ((code == TCL_BREAK) || (code == TCL_CONTINUE)) {
+	    /*
+	     * Inhibit substitution.
+	     */
+	    continue;
+	}
+
+	if (result == NULL) {
+	    /*
+	     * First pass through. If we have a Tcl_Obj, just use it. If not,
+	     * create one from our string.
+	     */
+
+	    if (appendObj != NULL) {
+		result = appendObj;
+	    } else {
+		result = Tcl_NewStringObj(append, appendByteLength);
+	    }
+	    Tcl_IncrRefCount(result);
+	} else {
+	    /*
+	     * Subsequent passes. Append to result.
+	     */
+
+	    if (Tcl_IsShared(result)) {
+		Tcl_DecrRefCount(result);
+		result = Tcl_DuplicateObj(result);
+		Tcl_IncrRefCount(result);
+	    }
+	    if (appendObj != NULL) {
+		Tcl_AppendObjToObj(result, appendObj);
+	    } else {
+		Tcl_AppendToObj(result, append, appendByteLength);
+	    }
+	}
+    }
+
+    if (code != TCL_ERROR) {		/* Keep error message in result! */
+	if (result != NULL) {
+	    Tcl_SetObjResult(interp, result);
+	    /*
+	     * If the code found continuation lines (which implies that this
+	     * word is a literal), then we store the accumulated table of
+	     * locations in the thread-global data structure for the bytecode
+	     * compiler to find later, assuming that the literal is a script
+	     * which will be compiled.
+	     */
+
+	    if (numCL) {
+		TclContinuationsEnter(result, numCL, clPosition);
+	    }
+
+	    /*
+	     * Release the temp table we used to collect the locations of
+	     * continuation lines, if any.
+	     */
+
+	    if (maxNumCL) {
+		ckfree ((char*) clPosition);
+	    }
+	} else {
+	    Tcl_ResetResult(interp);
+	}
+    }
+    if (tokensLeftPtr != NULL) {
+	*tokensLeftPtr = count;
+    }
+    if (result != NULL) {
+	Tcl_DecrRefCount(result);
+    }
+    return code;
+}
+
 /*
  *----------------------------------------------------------------------
  *
  * CommandComplete --
  *
- *	This procedure is shared by TclCommandComplete and
- *	Tcl_ObjCommandcoComplete; it does all the real work of seeing
- *	whether a script is complete
+ *	This function is shared by TclCommandComplete and
+ *	Tcl_ObjCommandComplete; it does all the real work of seeing whether a
+ *	script is complete
  *
  * Results:
  *	1 is returned if the script is complete, 0 if there are open
- *	delimiters such as " or (. 1 is also returned if there is a
- *	parse error in the script other than unmatched delimiters.
+ *	delimiters such as " or (. 1 is also returned if there is a parse
+ *	error in the script other than unmatched delimiters.
  *
  * Side effects:
  *	None.
@@ -1654,19 +2449,18 @@ Tcl_ParseQuotedString(interp, string, numBytes, parsePtr, append, termPtr)
  *----------------------------------------------------------------------
  */
 
-static int
-CommandComplete(script, numBytes)
-    CONST char *script;			/* Script to check. */
-    int numBytes;			/* Number of bytes in script. */
+static inline int
+CommandComplete(
+    const char *script,		/* Script to check. */
+    int numBytes)		/* Number of bytes in script. */
 {
     Tcl_Parse parse;
-    CONST char *p, *end;
+    const char *p, *end;
     int result;
 
     p = script;
     end = p + numBytes;
-    while (Tcl_ParseCommand((Tcl_Interp *) NULL, p, end - p, 0, &parse)
-	    == TCL_OK) {
+    while (Tcl_ParseCommand(NULL, p, end - p, 0, &parse) == TCL_OK) {
 	p = parse.commandStart + parse.commandSize;
 	if (p >= end) {
 	    break;
@@ -1681,20 +2475,20 @@ CommandComplete(script, numBytes)
     Tcl_FreeParse(&parse);
     return result;
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_CommandComplete --
  *
- *	Given a partial or complete Tcl script, this procedure
- *	determines whether the script is complete in the sense
- *	of having matched braces and quotes and brackets.
+ *	Given a partial or complete Tcl script, this function determines
+ *	whether the script is complete in the sense of having matched braces
+ *	and quotes and brackets.
  *
  * Results:
- *	1 is returned if the script is complete, 0 otherwise.
- *	1 is also returned if there is a parse error in the script
- *	other than unmatched delimiters.
+ *	1 is returned if the script is complete, 0 otherwise. 1 is also
+ *	returned if there is a parse error in the script other than unmatched
+ *	delimiters.
  *
  * Side effects:
  *	None.
@@ -1703,20 +2497,20 @@ CommandComplete(script, numBytes)
  */
 
 int
-Tcl_CommandComplete(script)
-    CONST char *script;			/* Script to check. */
+Tcl_CommandComplete(
+    const char *script)		/* Script to check. */
 {
     return CommandComplete(script, (int) strlen(script));
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * TclObjCommandComplete --
  *
- *	Given a partial or complete Tcl command in a Tcl object, this
- *	procedure determines whether the command is complete in the sense of
- *	having matched braces and quotes and brackets.
+ *	Given a partial or complete Tcl command in a Tcl object, this function
+ *	determines whether the command is complete in the sense of having
+ *	matched braces and quotes and brackets.
  *
  * Results:
  *	1 is returned if the command is complete, 0 otherwise.
@@ -1728,24 +2522,23 @@ Tcl_CommandComplete(script)
  */
 
 int
-TclObjCommandComplete(objPtr)
-    Tcl_Obj *objPtr;			/* Points to object holding script
-					 * to check. */
+TclObjCommandComplete(
+    Tcl_Obj *objPtr)		/* Points to object holding script to
+				 * check. */
 {
-    CONST char *script;
     int length;
+    const char *script = Tcl_GetStringFromObj(objPtr, &length);
 
-    script = Tcl_GetStringFromObj(objPtr, &length);
     return CommandComplete(script, length);
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * TclIsLocalScalar --
  *
- *	Check to see if a given string is a legal scalar variable
- *	name with no namespace qualifiers or substitutions.
+ *	Check to see if a given string is a legal scalar variable name with no
+ *	namespace qualifiers or substitutions.
  *
  * Results:
  *	Returns 1 if the variable is a local scalar.
@@ -1757,34 +2550,42 @@ TclObjCommandComplete(objPtr)
  */
 
 int
-TclIsLocalScalar(src, len)
-    CONST char *src;
-    int len;
+TclIsLocalScalar(
+    const char *src,
+    int len)
 {
-    CONST char *p;
-    CONST char *lastChar = src + (len - 1);
+    const char *p;
+    const char *lastChar = src + (len - 1);
 
-    for (p = src; p <= lastChar; p++) {
+    for (p=src ; p<=lastChar ; p++) {
 	if ((CHAR_TYPE(*p) != TYPE_NORMAL) &&
 		(CHAR_TYPE(*p) != TYPE_COMMAND_END)) {
 	    /*
-	     * TCL_COMMAND_END is returned for the last character
-	     * of the string.  By this point we know it isn't
-	     * an array or namespace reference.
+	     * TCL_COMMAND_END is returned for the last character of the
+	     * string. By this point we know it isn't an array or namespace
+	     * reference.
 	     */
 
 	    return 0;
 	}
-	if  (*p == '(') {
-	    if (*lastChar == ')') { /* we have an array element */
+	if (*p == '(') {
+	    if (*lastChar == ')') {	/* We have an array element */
 		return 0;
 	    }
 	} else if (*p == ':') {
-	    if ((p != lastChar) && *(p+1) == ':') { /* qualified name */
+	    if ((p != lastChar) && *(p+1) == ':') {	/* qualified name */
 		return 0;
 	    }
 	}
     }
-	
+
     return 1;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclParseExpr.c b/generic/tclParseExpr.c
deleted file mode 100644
index e07b7e7..0000000
--- a/generic/tclParseExpr.c
+++ /dev/null
@@ -1,2083 +0,0 @@
-/* 
- * tclParseExpr.c --
- *
- *	This file contains procedures that parse Tcl expressions. They
- *	do so in a general-purpose fashion that can be used for many
- *	different purposes, including compilation, direct execution,
- *	code analysis, etc.
- *
- * Copyright (c) 1997 Sun Microsystems, Inc.
- * Copyright (c) 1998-2000 by Scriptics Corporation.
- * Contributions from Don Porter, NIST, 2002.  (not subject to US copyright)
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- */
-
-#include "tclInt.h"
-
-/*
- * The stuff below is a bit of a hack so that this file can be used in
- * environments that include no UNIX, i.e. no errno: just arrange to use
- * the errno from tclExecute.c here.
- */
-
-#ifndef TCL_GENERIC_ONLY
-#include "tclPort.h"
-#else
-#define NO_ERRNO_H
-#endif
-
-#ifdef NO_ERRNO_H
-extern int errno;			/* Use errno from tclExecute.c. */
-#define ERANGE 34
-#endif
-
-/*
- * Boolean variable that controls whether expression parse tracing
- * is enabled.
- */
-
-#ifdef TCL_COMPILE_DEBUG
-static int traceParseExpr = 0;
-#endif /* TCL_COMPILE_DEBUG */
-
-/*
- * The ParseInfo structure holds state while parsing an expression.
- * A pointer to an ParseInfo record is passed among the routines in
- * this module.
- */
-
-typedef struct ParseInfo {
-    Tcl_Parse *parsePtr;	/* Points to structure to fill in with
-				 * information about the expression. */
-    int lexeme;			/* Type of last lexeme scanned in expr.
-				 * See below for definitions. Corresponds to
-				 * size characters beginning at start. */
-    CONST char *start;		/* First character in lexeme. */
-    int size;			/* Number of bytes in lexeme. */
-    CONST char *next;		/* Position of the next character to be
-				 * scanned in the expression string. */
-    CONST char *prevEnd;	/* Points to the character just after the
-				 * last one in the previous lexeme. Used to
-				 * compute size of subexpression tokens. */
-    CONST char *originalExpr;	/* Points to the start of the expression
-				 * originally passed to Tcl_ParseExpr. */
-    CONST char *lastChar;	/* Points just after last byte of expr. */
-} ParseInfo;
-
-/*
- * Definitions of the different lexemes that appear in expressions. The
- * order of these must match the corresponding entries in the
- * operatorStrings array below.
- *
- * Basic lexemes:
- */
-
-#define LITERAL		0
-#define FUNC_NAME	1
-#define OPEN_BRACKET	2
-#define OPEN_BRACE	3
-#define OPEN_PAREN	4
-#define CLOSE_PAREN	5
-#define DOLLAR		6
-#define QUOTE		7
-#define COMMA		8
-#define END		9
-#define UNKNOWN		10
-#define UNKNOWN_CHAR	11
-
-/*
- * Binary numeric operators:
- */
-
-#define MULT		12
-#define DIVIDE		13
-#define MOD		14
-#define PLUS		15
-#define MINUS		16
-#define LEFT_SHIFT	17
-#define RIGHT_SHIFT	18
-#define LESS		19
-#define GREATER		20
-#define LEQ		21
-#define GEQ		22
-#define EQUAL		23
-#define NEQ		24
-#define BIT_AND		25
-#define BIT_XOR		26
-#define BIT_OR		27
-#define AND		28
-#define OR		29
-#define QUESTY		30
-#define COLON		31
-
-/*
- * Unary operators. Unary minus and plus are represented by the (binary)
- * lexemes MINUS and PLUS.
- */
-
-#define NOT		32
-#define BIT_NOT		33
-
-/*
- * Binary string operators:
- */
-
-#define STREQ		34
-#define STRNEQ		35
-
-/*
- * Mapping from lexemes to strings; used for debugging messages. These
- * entries must match the order and number of the lexeme definitions above.
- */
-
-static CONST char *CONST lexemeStrings[] = {
-    "LITERAL", "FUNCNAME",
-    "[", "{", "(", ")", "$", "\"", ",", "END", "UNKNOWN", "UNKNOWN_CHAR",
-    "*", "/", "%", "+", "-",
-    "<<", ">>", "<", ">", "<=", ">=", "==", "!=",
-    "&", "^", "|", "&&", "||", "?", ":",
-    "!", "~", "eq", "ne",
-};
-
-/*
- * Declarations for local procedures to this file:
- */
-
-static int		GetLexeme _ANSI_ARGS_((ParseInfo *infoPtr));
-static void		LogSyntaxError _ANSI_ARGS_((ParseInfo *infoPtr,
-				CONST char *extraInfo));
-static int		ParseAddExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseBitAndExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseBitOrExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseBitXorExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseCondExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseEqualityExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseLandExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseLorExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseMaxDoubleLength _ANSI_ARGS_((CONST char *string,
-				CONST char *end));
-static int		ParseMultiplyExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParsePrimaryExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseRelationalExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseShiftExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static int		ParseUnaryExpr _ANSI_ARGS_((ParseInfo *infoPtr));
-static void		PrependSubExprTokens _ANSI_ARGS_((CONST char *op,
-				int opBytes, CONST char *src, int srcBytes,
-				int firstIndex, ParseInfo *infoPtr));
-
-/*
- * Macro used to debug the execution of the recursive descent parser used
- * to parse expressions.
- */
-
-#ifdef TCL_COMPILE_DEBUG
-#define HERE(production, level) \
-    if (traceParseExpr) { \
-	fprintf(stderr, "%*s%s: lexeme=%s, next=\"%.20s\"\n", \
-		(level), " ", (production), \
-		lexemeStrings[infoPtr->lexeme], infoPtr->next); \
-    }
-#else
-#define HERE(production, level)
-#endif /* TCL_COMPILE_DEBUG */
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_ParseExpr --
- *
- *	Given a string, this procedure parses the first Tcl expression
- *	in the string and returns information about the structure of
- *	the expression. This procedure is the top-level interface to the
- *	the expression parsing module.  No more that numBytes bytes will
- *	be scanned.
- *
- * Results:
- *	The return value is TCL_OK if the command was parsed successfully
- *	and TCL_ERROR otherwise. If an error occurs and interp isn't NULL
- *	then an error message is left in its result. On a successful return,
- *	parsePtr is filled in with information about the expression that 
- *	was parsed.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the expression, then additional space is
- *	malloc-ed. If the procedure returns TCL_OK then the caller must
- *	eventually invoke Tcl_FreeParse to release any additional space
- *	that was allocated.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_ParseExpr(interp, string, numBytes, parsePtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    CONST char *string;		/* The source string to parse. */
-    int numBytes;		/* Number of bytes in string. If < 0, the
-				 * string consists of all bytes up to the
-				 * first null character. */
-    Tcl_Parse *parsePtr;	/* Structure to fill with information about
-				 * the parsed expression; any previous
-				 * information in the structure is
-				 * ignored. */
-{
-    ParseInfo info;
-    int code;
-
-    if (numBytes < 0) {
-	numBytes = (string? strlen(string) : 0);
-    }
-#ifdef TCL_COMPILE_DEBUG
-    if (traceParseExpr) {
-	fprintf(stderr, "Tcl_ParseExpr: string=\"%.*s\"\n",
-	        numBytes, string);
-    }
-#endif /* TCL_COMPILE_DEBUG */
-    
-    parsePtr->commentStart = NULL;
-    parsePtr->commentSize = 0;
-    parsePtr->commandStart = NULL;
-    parsePtr->commandSize = 0;
-    parsePtr->numWords = 0;
-    parsePtr->tokenPtr = parsePtr->staticTokens;
-    parsePtr->numTokens = 0;
-    parsePtr->tokensAvailable = NUM_STATIC_TOKENS;
-    parsePtr->string = string;
-    parsePtr->end = (string + numBytes);
-    parsePtr->interp = interp;
-    parsePtr->term = string;
-    parsePtr->incomplete = 0;
-
-    /*
-     * Initialize the ParseInfo structure that holds state while parsing
-     * the expression.
-     */
-
-    info.parsePtr = parsePtr;
-    info.lexeme = UNKNOWN;
-    info.start = NULL;
-    info.size = 0;
-    info.next = string;
-    info.prevEnd = string;
-    info.originalExpr = string;
-    info.lastChar = (string + numBytes); /* just after last char of expr */
-
-    /*
-     * Get the first lexeme then parse the expression.
-     */
-
-    code = GetLexeme(&info);
-    if (code != TCL_OK) {
-	goto error;
-    }
-    code = ParseCondExpr(&info);
-    if (code != TCL_OK) {
-	goto error;
-    }
-    if (info.lexeme != END) {
-	LogSyntaxError(&info, "extra tokens at end of expression");
-	goto error;
-    }
-    return TCL_OK;
-    
-    error:
-    if (parsePtr->tokenPtr != parsePtr->staticTokens) {
-	ckfree((char *) parsePtr->tokenPtr);
-    }
-    return TCL_ERROR;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseCondExpr --
- *
- *	This procedure parses a Tcl conditional expression:
- *	condExpr ::= lorExpr ['?' condExpr ':' condExpr]
- *
- *	Note that this is the topmost recursive-descent parsing routine used
- *	by Tcl_ParseExpr to parse expressions. This avoids an extra procedure
- *	call since such a procedure would only return the result of calling
- *	ParseCondExpr. Other recursive-descent procedures that need to parse
- *	complete expressions also call ParseCondExpr.
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseCondExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    Tcl_Token *tokenPtr, *firstTokenPtr, *condTokenPtr;
-    int firstIndex, numToMove, code;
-    CONST char *srcStart;
-    
-    HERE("condExpr", 1);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseLorExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-    
-    if (infoPtr->lexeme == QUESTY) {
-	/*
-	 * Emit two tokens: one TCL_TOKEN_SUB_EXPR token for the entire
-	 * conditional expression, and a TCL_TOKEN_OPERATOR token for 
-	 * the "?" operator. Note that these two tokens must be inserted
-	 * before the LOR operand tokens generated above.
-	 */
-
-	if ((parsePtr->numTokens + 1) >= parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
-	firstTokenPtr = &parsePtr->tokenPtr[firstIndex];
-	tokenPtr = (firstTokenPtr + 2);
-	numToMove = (parsePtr->numTokens - firstIndex);
-	memmove((VOID *) tokenPtr, (VOID *) firstTokenPtr,
-	        (size_t) (numToMove * sizeof(Tcl_Token)));
-	parsePtr->numTokens += 2;
-	
-	tokenPtr = firstTokenPtr;
-	tokenPtr->type = TCL_TOKEN_SUB_EXPR;
-	tokenPtr->start = srcStart;
-	
-	tokenPtr++;
-	tokenPtr->type = TCL_TOKEN_OPERATOR;
-	tokenPtr->start = infoPtr->start;
-	tokenPtr->size = 1;
-	tokenPtr->numComponents = 0;
-    
-	/*
-	 * Skip over the '?'.
-	 */
-	
-	code = GetLexeme(infoPtr); 
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Parse the "then" expression.
-	 */
-
-	code = ParseCondExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	if (infoPtr->lexeme != COLON) {
-	    LogSyntaxError(infoPtr, "missing colon from ternary conditional");
-	    return TCL_ERROR;
-	}
-	code = GetLexeme(infoPtr); /* skip over the ':' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Parse the "else" expression.
-	 */
-
-	code = ParseCondExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Now set the size-related fields in the '?' subexpression token.
-	 */
-
-	condTokenPtr = &parsePtr->tokenPtr[firstIndex];
-	condTokenPtr->size = (infoPtr->prevEnd - srcStart);
-	condTokenPtr->numComponents = parsePtr->numTokens - (firstIndex+1);
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseLorExpr --
- *
- *	This procedure parses a Tcl logical or expression:
- *	lorExpr ::= landExpr {'||' landExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseLorExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, code;
-    CONST char *srcStart, *operator;
-    
-    HERE("lorExpr", 2);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseLandExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    while (infoPtr->lexeme == OR) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over the '||' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseLandExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the LOR subexpression and the '||' operator.
-	 */
-
-	PrependSubExprTokens(operator, 2, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseLandExpr --
- *
- *	This procedure parses a Tcl logical and expression:
- *	landExpr ::= bitOrExpr {'&&' bitOrExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseLandExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, code;
-    CONST char *srcStart, *operator;
-
-    HERE("landExpr", 3);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseBitOrExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    while (infoPtr->lexeme == AND) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over the '&&' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseBitOrExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the LAND subexpression and the '&&' operator.
-	 */
-
-	PrependSubExprTokens(operator, 2, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseBitOrExpr --
- *
- *	This procedure parses a Tcl bitwise or expression:
- *	bitOrExpr ::= bitXorExpr {'|' bitXorExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseBitOrExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, code;
-    CONST char *srcStart, *operator;
-
-    HERE("bitOrExpr", 4);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseBitXorExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-    
-    while (infoPtr->lexeme == BIT_OR) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over the '|' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	code = ParseBitXorExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	
-	/*
-	 * Generate tokens for the BITOR subexpression and the '|' operator.
-	 */
-
-	PrependSubExprTokens(operator, 1, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseBitXorExpr --
- *
- *	This procedure parses a Tcl bitwise exclusive or expression:
- *	bitXorExpr ::= bitAndExpr {'^' bitAndExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseBitXorExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, code;
-    CONST char *srcStart, *operator;
-
-    HERE("bitXorExpr", 5);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseBitAndExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-    
-    while (infoPtr->lexeme == BIT_XOR) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over the '^' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	code = ParseBitAndExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	
-	/*
-	 * Generate tokens for the XOR subexpression and the '^' operator.
-	 */
-
-	PrependSubExprTokens(operator, 1, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseBitAndExpr --
- *
- *	This procedure parses a Tcl bitwise and expression:
- *	bitAndExpr ::= equalityExpr {'&' equalityExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseBitAndExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, code;
-    CONST char *srcStart, *operator;
-
-    HERE("bitAndExpr", 6);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseEqualityExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-    
-    while (infoPtr->lexeme == BIT_AND) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over the '&' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseEqualityExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	
-	/*
-	 * Generate tokens for the BITAND subexpression and '&' operator.
-	 */
-
-	PrependSubExprTokens(operator, 1, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseEqualityExpr --
- *
- *	This procedure parses a Tcl equality (inequality) expression:
- *	equalityExpr ::= relationalExpr
- *		{('==' | '!=' | 'ne' | 'eq') relationalExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseEqualityExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, lexeme, code;
-    CONST char *srcStart, *operator;
-
-    HERE("equalityExpr", 7);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseRelationalExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    lexeme = infoPtr->lexeme;
-    while ((lexeme == EQUAL) || (lexeme == NEQ)
-	    || (lexeme == STREQ) || (lexeme == STRNEQ)) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over ==, !=, 'eq' or 'ne'  */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseRelationalExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the subexpression and '==', '!=', 'eq' or 'ne'
-	 * operator.
-	 */
-
-	PrependSubExprTokens(operator, 2, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-	lexeme = infoPtr->lexeme;
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseRelationalExpr --
- *
- *	This procedure parses a Tcl relational expression:
- *	relationalExpr ::= shiftExpr {('<' | '>' | '<=' | '>=') shiftExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseRelationalExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, lexeme, operatorSize, code;
-    CONST char *srcStart, *operator;
-
-    HERE("relationalExpr", 8);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseShiftExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    lexeme = infoPtr->lexeme;
-    while ((lexeme == LESS) || (lexeme == GREATER) || (lexeme == LEQ)
-            || (lexeme == GEQ)) {
-	operator = infoPtr->start;
-	if ((lexeme == LEQ) || (lexeme == GEQ)) {
-	    operatorSize = 2;
-	} else {
-	    operatorSize = 1;
-	}
-	code = GetLexeme(infoPtr); /* skip over the operator */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseShiftExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the subexpression and the operator.
-	 */
-
-	PrependSubExprTokens(operator, operatorSize, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-	lexeme = infoPtr->lexeme;
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseShiftExpr --
- *
- *	This procedure parses a Tcl shift expression:
- *	shiftExpr ::= addExpr {('<<' | '>>') addExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseShiftExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, lexeme, code;
-    CONST char *srcStart, *operator;
-
-    HERE("shiftExpr", 9);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseAddExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    lexeme = infoPtr->lexeme;
-    while ((lexeme == LEFT_SHIFT) || (lexeme == RIGHT_SHIFT)) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over << or >> */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseAddExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the subexpression and '<<' or '>>' operator.
-	 */
-
-	PrependSubExprTokens(operator, 2, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-	lexeme = infoPtr->lexeme;
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseAddExpr --
- *
- *	This procedure parses a Tcl addition expression:
- *	addExpr ::= multiplyExpr {('+' | '-') multiplyExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseAddExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, lexeme, code;
-    CONST char *srcStart, *operator;
-
-    HERE("addExpr", 10);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseMultiplyExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    lexeme = infoPtr->lexeme;
-    while ((lexeme == PLUS) || (lexeme == MINUS)) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over + or - */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseMultiplyExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the subexpression and '+' or '-' operator.
-	 */
-
-	PrependSubExprTokens(operator, 1, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-	lexeme = infoPtr->lexeme;
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseMultiplyExpr --
- *
- *	This procedure parses a Tcl multiply expression:
- *	multiplyExpr ::= unaryExpr {('*' | '/' | '%') unaryExpr}
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseMultiplyExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, lexeme, code;
-    CONST char *srcStart, *operator;
-
-    HERE("multiplyExpr", 11);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    code = ParseUnaryExpr(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-
-    lexeme = infoPtr->lexeme;
-    while ((lexeme == MULT) || (lexeme == DIVIDE) || (lexeme == MOD)) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over * or / or % */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseUnaryExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the subexpression and * or / or % operator.
-	 */
-
-	PrependSubExprTokens(operator, 1, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-	lexeme = infoPtr->lexeme;
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseUnaryExpr --
- *
- *	This procedure parses a Tcl unary expression:
- *	unaryExpr ::= ('+' | '-' | '~' | '!') unaryExpr | primaryExpr
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseUnaryExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    int firstIndex, lexeme, code;
-    CONST char *srcStart, *operator;
-
-    HERE("unaryExpr", 12);
-    srcStart = infoPtr->start;
-    firstIndex = parsePtr->numTokens;
-    
-    lexeme = infoPtr->lexeme;
-    if ((lexeme == PLUS) || (lexeme == MINUS) || (lexeme == BIT_NOT)
-            || (lexeme == NOT)) {
-	operator = infoPtr->start;
-	code = GetLexeme(infoPtr); /* skip over the unary operator */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseUnaryExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	/*
-	 * Generate tokens for the subexpression and the operator.
-	 */
-
-	PrependSubExprTokens(operator, 1, srcStart,
-	        (infoPtr->prevEnd - srcStart), firstIndex, infoPtr);
-    } else {			/* must be a primaryExpr */
-	code = ParsePrimaryExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-    }
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParsePrimaryExpr --
- *
- *	This procedure parses a Tcl primary expression:
- *	primaryExpr ::= literal | varReference | quotedString |
- *			'[' command ']' | mathFuncCall | '(' condExpr ')'
- *
- * Results:
- *	The return value is TCL_OK on a successful parse and TCL_ERROR
- *	on failure. If TCL_ERROR is returned, then the interpreter's result
- *	contains an error message.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParsePrimaryExpr(infoPtr)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    Tcl_Interp *interp = parsePtr->interp;
-    Tcl_Token *tokenPtr, *exprTokenPtr;
-    Tcl_Parse nested;
-    CONST char *dollarPtr, *stringStart, *termPtr, *src;
-    int lexeme, exprIndex, firstIndex, numToMove, code;
-
-    /*
-     * We simply recurse on parenthesized subexpressions.
-     */
-
-    HERE("primaryExpr", 13);
-    lexeme = infoPtr->lexeme;
-    if (lexeme == OPEN_PAREN) {
-	code = GetLexeme(infoPtr); /* skip over the '(' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	code = ParseCondExpr(infoPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	if (infoPtr->lexeme != CLOSE_PAREN) {
-	    LogSyntaxError(infoPtr, "looking for close parenthesis");
-	    return TCL_ERROR;
-	}
-	code = GetLexeme(infoPtr); /* skip over the ')' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	return TCL_OK;
-    }
-
-    /*
-     * Start a TCL_TOKEN_SUB_EXPR token for the primary.
-     */
-
-    if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	TclExpandTokenArray(parsePtr);
-    }
-    exprIndex = parsePtr->numTokens;
-    exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-    exprTokenPtr->type = TCL_TOKEN_SUB_EXPR;
-    exprTokenPtr->start = infoPtr->start;
-    parsePtr->numTokens++;
-
-    /*
-     * Process the primary then finish setting the fields of the
-     * TCL_TOKEN_SUB_EXPR token. Note that we can't use the pointer now
-     * stored in "exprTokenPtr" in the code below since the token array
-     * might be reallocated.
-     */
-
-    firstIndex = parsePtr->numTokens;
-    switch (lexeme) {
-    case LITERAL:
-	/*
-	 * Int or double number.
-	 */
-	
-	tokenizeLiteral:
-	if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
-	tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
-	tokenPtr->type = TCL_TOKEN_TEXT;
-	tokenPtr->start = infoPtr->start;
-	tokenPtr->size = infoPtr->size;
-	tokenPtr->numComponents = 0;
-	parsePtr->numTokens++;
-
-	exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	exprTokenPtr->size = infoPtr->size;
-	exprTokenPtr->numComponents = 1;
-	break;
-
-    case DOLLAR:
-	/*
-	 * $var variable reference.
-	 */
-	
-	dollarPtr = (infoPtr->next - 1);
-	code = Tcl_ParseVarName(interp, dollarPtr,
-	        (infoPtr->lastChar - dollarPtr), parsePtr, 1);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	infoPtr->next = dollarPtr + parsePtr->tokenPtr[firstIndex].size;
-
-	exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	exprTokenPtr->size = parsePtr->tokenPtr[firstIndex].size;
-	exprTokenPtr->numComponents =
-	        (parsePtr->tokenPtr[firstIndex].numComponents + 1);
-	break;
-	
-    case QUOTE:
-	/*
-	 * '"' string '"'
-	 */
-	
-	stringStart = infoPtr->next;
-	code = Tcl_ParseQuotedString(interp, infoPtr->start,
-	        (infoPtr->lastChar - stringStart), parsePtr, 1, &termPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	infoPtr->next = termPtr;
-
-	exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	exprTokenPtr->size = (termPtr - exprTokenPtr->start);
-	exprTokenPtr->numComponents = parsePtr->numTokens - firstIndex;
-
-	/*
-	 * If parsing the quoted string resulted in more than one token,
-	 * insert a TCL_TOKEN_WORD token before them. This indicates that
-	 * the quoted string represents a concatenation of multiple tokens.
-	 */
-
-	if (exprTokenPtr->numComponents > 1) {
-	    if (parsePtr->numTokens >= parsePtr->tokensAvailable) {
-		TclExpandTokenArray(parsePtr);
-	    }
-	    tokenPtr = &parsePtr->tokenPtr[firstIndex];
-	    numToMove = (parsePtr->numTokens - firstIndex);
-	    memmove((VOID *) (tokenPtr + 1), (VOID *) tokenPtr,
-	            (size_t) (numToMove * sizeof(Tcl_Token)));
-	    parsePtr->numTokens++;
-
-	    exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	    exprTokenPtr->numComponents++;
-
-	    tokenPtr->type = TCL_TOKEN_WORD;
-	    tokenPtr->start = exprTokenPtr->start;
-	    tokenPtr->size = exprTokenPtr->size;
-	    tokenPtr->numComponents = (exprTokenPtr->numComponents - 1);
-	}
-	break;
-	
-    case OPEN_BRACKET:
-	/*
-	 * '[' command {command} ']'
-	 */
-
-	if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
-	tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
-	tokenPtr->type = TCL_TOKEN_COMMAND;
-	tokenPtr->start = infoPtr->start;
-	tokenPtr->numComponents = 0;
-	parsePtr->numTokens++;
-
-	/*
-	 * Call Tcl_ParseCommand repeatedly to parse the nested command(s)
-	 * to find their end, then throw away that parse information.
-	 */
-	
-	src = infoPtr->next;
-	while (1) {
-	    if (Tcl_ParseCommand(interp, src, (parsePtr->end - src), 1,
-		    &nested) != TCL_OK) {
-		parsePtr->term = nested.term;
-		parsePtr->errorType = nested.errorType;
-		parsePtr->incomplete = nested.incomplete;
-		return TCL_ERROR;
-	    }
-	    src = (nested.commandStart + nested.commandSize);
-
-	    /*
-	     * This is equivalent to Tcl_FreeParse(&nested), but
-	     * presumably inlined here for sake of runtime optimization
-	     */
-
-	    if (nested.tokenPtr != nested.staticTokens) {
-		ckfree((char *) nested.tokenPtr);
-	    }
-
-	    /*
-	     * Check for the closing ']' that ends the command substitution.
-	     * It must have been the last character of the parsed command.
-	     */
-
-	    if ((nested.term < parsePtr->end) && (*nested.term == ']') 
-		    && !nested.incomplete) {
-		break;
-	    }
-	    if (src == parsePtr->end) {
-		if (parsePtr->interp != NULL) {
-		    Tcl_SetResult(interp, "missing close-bracket",
-			    TCL_STATIC);
-		}
-		parsePtr->term = tokenPtr->start;
-		parsePtr->errorType = TCL_PARSE_MISSING_BRACKET;
-		parsePtr->incomplete = 1;
-		return TCL_ERROR;
-	    }
-	}
-	tokenPtr->size = (src - tokenPtr->start);
-	infoPtr->next = src;
-
-	exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	exprTokenPtr->size = (src - tokenPtr->start);
-	exprTokenPtr->numComponents = 1;
-	break;
-
-    case OPEN_BRACE:
-	/*
-	 * '{' string '}'
-	 */
-
-	code = Tcl_ParseBraces(interp, infoPtr->start,
-	        (infoPtr->lastChar - infoPtr->start), parsePtr, 1,
-		&termPtr);
-	if (code != TCL_OK) {
-	    return code;
-	}
-	infoPtr->next = termPtr;
-
-	exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	exprTokenPtr->size = (termPtr - infoPtr->start);
-	exprTokenPtr->numComponents = parsePtr->numTokens - firstIndex;
-
-	/*
-	 * If parsing the braced string resulted in more than one token,
-	 * insert a TCL_TOKEN_WORD token before them. This indicates that
-	 * the braced string represents a concatenation of multiple tokens.
-	 */
-
-	if (exprTokenPtr->numComponents > 1) {
-	    if (parsePtr->numTokens >= parsePtr->tokensAvailable) {
-		TclExpandTokenArray(parsePtr);
-	    }
-	    tokenPtr = &parsePtr->tokenPtr[firstIndex];
-	    numToMove = (parsePtr->numTokens - firstIndex);
-	    memmove((VOID *) (tokenPtr + 1), (VOID *) tokenPtr,
-	            (size_t) (numToMove * sizeof(Tcl_Token)));
-	    parsePtr->numTokens++;
-
-	    exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	    exprTokenPtr->numComponents++;
-	    
-	    tokenPtr->type = TCL_TOKEN_WORD;
-	    tokenPtr->start = exprTokenPtr->start;
-	    tokenPtr->size = exprTokenPtr->size;
-	    tokenPtr->numComponents = exprTokenPtr->numComponents-1;
-	}
-	break;
-	
-/*
- *	Disable attempt to support functions named "eq" or "ne".  This
- *	is unworkable in the Tcl 8.4.* releases.  See Tcl Bugs 1971879
- *	and 1201589.
- *
-    case STREQ:
-    case STRNEQ:
-*/
-    case FUNC_NAME: {
-	/*
-	 * math_func '(' expr {',' expr} ')'
-	 */
-
-	ParseInfo savedInfo = *infoPtr;
-	
-	code = GetLexeme(infoPtr); /* skip over function name */
-	if (code != TCL_OK) {
-	    return code;
-	}
-	if (infoPtr->lexeme != OPEN_PAREN) {
-	    int code;
-	    Tcl_DString functionName;
-	    Tcl_HashEntry *hPtr;
-	    Interp *iPtr = (Interp *) infoPtr->parsePtr->interp;
-	    Tcl_Obj *objPtr = Tcl_NewStringObj(savedInfo.start, savedInfo.size);
-
-	    /* Check for boolean literals (true, false, yes, no, on, off) */
-	    Tcl_IncrRefCount(objPtr);
-	    code = Tcl_ConvertToType(NULL, objPtr, &tclBooleanType);
-	    Tcl_DecrRefCount(objPtr);
-	    if (code == TCL_OK) {
-		*infoPtr = savedInfo;
-		goto tokenizeLiteral;
-	    }
-
-	    /*
-	     * Guess what kind of error we have by trying to tell
-	     * whether we have a function or variable name here.
-	     * Alas, this makes the parser more tightly bound with the
-	     * rest of the interpreter, but that is the only way to
-	     * give a sensible message here.  Still, it is not too
-	     * serious as this is only done when generating an error.
-	     */
-
-	    /*
-	     * Look up the name as a function name.  We need a writable
-	     * copy (DString) so we can terminate it with a NULL for
-	     * the benefit of Tcl_FindHashEntry which operates on
-	     * NULL-terminated string keys.
-	     */
-	    Tcl_DStringInit(&functionName);
-	    hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, 
-	    	Tcl_DStringAppend(&functionName,
-			savedInfo.start, savedInfo.size));
-	    Tcl_DStringFree(&functionName);
-
-	    /*
-	     * Assume that we have an attempted variable reference
-	     * unless we've got a function name, as the set of
-	     * potential function names is typically much smaller.
-	     */
-	    if (hPtr != NULL) {
-		LogSyntaxError(infoPtr,
-			"expected parenthesis enclosing function arguments");
-	    } else {
-		LogSyntaxError(infoPtr,
-			"variable references require preceding $");
-	    }
-	    return TCL_ERROR;
-	}
-
-	if (parsePtr->numTokens == parsePtr->tokensAvailable) {
-	    TclExpandTokenArray(parsePtr);
-	}
-	tokenPtr = &parsePtr->tokenPtr[parsePtr->numTokens];
-	tokenPtr->type = TCL_TOKEN_OPERATOR;
-	tokenPtr->start = savedInfo.start;
-	tokenPtr->size = savedInfo.size;
-	tokenPtr->numComponents = 0;
-	parsePtr->numTokens++;
-	
-	code = GetLexeme(infoPtr); /* skip over '(' */
-	if (code != TCL_OK) {
-	    return code;
-	}
-
-	while (infoPtr->lexeme != CLOSE_PAREN) {
-	    code = ParseCondExpr(infoPtr);
-	    if (code != TCL_OK) {
-		return code;
-	    }
-	    
-	    if (infoPtr->lexeme == COMMA) {
-		code = GetLexeme(infoPtr); /* skip over , */
-		if (code != TCL_OK) {
-		    return code;
-		}
-	    } else if (infoPtr->lexeme != CLOSE_PAREN) {
-		LogSyntaxError(infoPtr,
-			"missing close parenthesis at end of function call");
-		return TCL_ERROR;
-	    }
-	}
-
-	exprTokenPtr = &parsePtr->tokenPtr[exprIndex];
-	exprTokenPtr->size = (infoPtr->next - exprTokenPtr->start);
-	exprTokenPtr->numComponents = parsePtr->numTokens - firstIndex;
-	break;
-    }
-
-    case COMMA:
-	LogSyntaxError(infoPtr,
-		"commas can only separate function arguments");
-	return TCL_ERROR;
-    case END:
-	LogSyntaxError(infoPtr, "premature end of expression");
-	return TCL_ERROR;
-    case UNKNOWN:
-	LogSyntaxError(infoPtr, "single equality character not legal in expressions");
-	return TCL_ERROR;
-    case UNKNOWN_CHAR:
-	LogSyntaxError(infoPtr, "character not legal in expressions");
-	return TCL_ERROR;
-    case QUESTY:
-	LogSyntaxError(infoPtr, "unexpected ternary 'then' separator");
-	return TCL_ERROR;
-    case COLON:
-	LogSyntaxError(infoPtr, "unexpected ternary 'else' separator");
-	return TCL_ERROR;
-    case CLOSE_PAREN:
-	LogSyntaxError(infoPtr, "unexpected close parenthesis");
-	return TCL_ERROR;
-
-    default: {
-	char buf[64];
-
-	sprintf(buf, "unexpected operator %s", lexemeStrings[lexeme]);
-	LogSyntaxError(infoPtr, buf);
-	return TCL_ERROR;
-	}
-    }
-
-    /*
-     * Advance to the next lexeme before returning.
-     */
-    
-    code = GetLexeme(infoPtr);
-    if (code != TCL_OK) {
-	return code;
-    }
-    parsePtr->term = infoPtr->next;
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * GetLexeme --
- *
- *	Lexical scanner for Tcl expressions: scans a single operator or
- *	other syntactic element from an expression string.
- *
- * Results:
- *	TCL_OK is returned unless an error occurred. In that case a standard
- *	Tcl error code is returned and, if infoPtr->parsePtr->interp is
- *	non-NULL, the interpreter's result is set to hold an error
- *	message. TCL_ERROR is returned if an integer overflow, or a
- *	floating-point overflow or underflow occurred while reading in a
- *	number. If the lexical analysis is successful, infoPtr->lexeme
- *	refers to the next symbol in the expression string, and
- *	infoPtr->next is advanced past the lexeme. Also, if the lexeme is a
- *	LITERAL or FUNC_NAME, then infoPtr->start is set to the first
- *	character of the lexeme; otherwise it is set NULL.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold all the
- *	information about the subexpression, then additional space is
- *	malloc-ed..
- *
- *----------------------------------------------------------------------
- */
-
-static int
-GetLexeme(infoPtr)
-    ParseInfo *infoPtr;		/* Holds state needed to parse the expr,
-				 * including the resulting lexeme. */
-{
-    register CONST char *src;	/* Points to current source char. */
-    char c;
-    int offset, length, numBytes;
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    Tcl_Interp *interp = parsePtr->interp;
-    Tcl_UniChar ch;
-
-    /*
-     * Record where the previous lexeme ended. Since we always read one
-     * lexeme ahead during parsing, this helps us know the source length of
-     * subexpression tokens.
-     */
-
-    infoPtr->prevEnd = infoPtr->next;
-
-    /*
-     * Scan over leading white space at the start of a lexeme. 
-     */
-
-    src = infoPtr->next;
-    numBytes = parsePtr->end - src;
-    do {
-	char type;
-	int scanned = TclParseWhiteSpace(src, numBytes, parsePtr, &type);
-	src += scanned; numBytes -= scanned;
-    } while  (numBytes && (*src == '\n') && (src++,numBytes--));
-    parsePtr->term = src;
-    if (numBytes == 0) {
-	infoPtr->lexeme = END;
-	infoPtr->next = src;
-	return TCL_OK;
-    }
-
-    /*
-     * Try to parse the lexeme first as an integer or floating-point
-     * number. Don't check for a number if the first character c is
-     * "+" or "-". If we did, we might treat a binary operator as unary
-     * by mistake, which would eventually cause a syntax error.
-     */
-
-    c = *src;
-    if ((c != '+') && (c != '-')) {
-	CONST char *end = infoPtr->lastChar;
-	if ((length = TclParseInteger(src, (end - src)))) {
-	    /*
-	     * First length bytes look like an integer.  Verify by
-	     * attempting the conversion to the largest integer we have.
-	     */
-	    int code;
-	    Tcl_WideInt wide;
-	    Tcl_Obj *value = Tcl_NewStringObj(src, length);
-
-	    Tcl_IncrRefCount(value);
-	    code = Tcl_GetWideIntFromObj(interp, value, &wide);
-	    Tcl_DecrRefCount(value);
-	    if (code == TCL_ERROR) {
-		parsePtr->errorType = TCL_PARSE_BAD_NUMBER;
-		return TCL_ERROR;
-	    }
-            infoPtr->lexeme = LITERAL;
-	    infoPtr->start = src;
-	    infoPtr->size = length;
-            infoPtr->next = (src + length);
-	    parsePtr->term = infoPtr->next;
-            return TCL_OK;
-	} else if ((length = ParseMaxDoubleLength(src, end))) {
-	    /*
-	     * There are length characters that could be a double.
-	     * Let strtod() tells us for sure.  Need a writable copy
-	     * so we can set an terminating NULL to keep strtod from
-	     * scanning too far.
-	     */
-	    char *startPtr, *termPtr;
-	    double doubleValue;
-	    Tcl_DString toParse;
-
-	    errno = 0;
-	    Tcl_DStringInit(&toParse);
-	    startPtr = Tcl_DStringAppend(&toParse, src, length);
-	    doubleValue = strtod(startPtr, &termPtr);
-	    Tcl_DStringFree(&toParse);
-	    if (termPtr != startPtr) {
-		if (errno != 0) {
-		    if (interp != NULL) {
-			TclExprFloatError(interp, doubleValue);
-		    }
-		    parsePtr->errorType = TCL_PARSE_BAD_NUMBER;
-		    return TCL_ERROR;
-		}
-		
-		/*
-                 * startPtr was the start of a valid double, copied
-		 * from src.
-                 */
-		
-		infoPtr->lexeme = LITERAL;
-		infoPtr->start = src;
-		if ((termPtr - startPtr) > length) {
-		    infoPtr->size = length;
-		} else {
-		    infoPtr->size = (termPtr - startPtr);
-		}
-		infoPtr->next = src + infoPtr->size;
-		parsePtr->term = infoPtr->next;
-		return TCL_OK;
-	    }
-	}
-    }
-
-    /*
-     * Not an integer or double literal. Initialize the lexeme's fields
-     * assuming the common case of a single character lexeme.
-     */
-
-    infoPtr->start = src;
-    infoPtr->size = 1;
-    infoPtr->next = src+1;
-    parsePtr->term = infoPtr->next;
-    
-    switch (*src) {
-	case '[':
-	    infoPtr->lexeme = OPEN_BRACKET;
-	    return TCL_OK;
-
-        case '{':
-	    infoPtr->lexeme = OPEN_BRACE;
-	    return TCL_OK;
-
-	case '(':
-	    infoPtr->lexeme = OPEN_PAREN;
-	    return TCL_OK;
-
-	case ')':
-	    infoPtr->lexeme = CLOSE_PAREN;
-	    return TCL_OK;
-
-	case '$':
-	    infoPtr->lexeme = DOLLAR;
-	    return TCL_OK;
-
-	case '\"':
-	    infoPtr->lexeme = QUOTE;
-	    return TCL_OK;
-
-	case ',':
-	    infoPtr->lexeme = COMMA;
-	    return TCL_OK;
-
-	case '*':
-	    infoPtr->lexeme = MULT;
-	    return TCL_OK;
-
-	case '/':
-	    infoPtr->lexeme = DIVIDE;
-	    return TCL_OK;
-
-	case '%':
-	    infoPtr->lexeme = MOD;
-	    return TCL_OK;
-
-	case '+':
-	    infoPtr->lexeme = PLUS;
-	    return TCL_OK;
-
-	case '-':
-	    infoPtr->lexeme = MINUS;
-	    return TCL_OK;
-
-	case '?':
-	    infoPtr->lexeme = QUESTY;
-	    return TCL_OK;
-
-	case ':':
-	    infoPtr->lexeme = COLON;
-	    return TCL_OK;
-
-	case '<':
-	    infoPtr->lexeme = LESS;
-	    if ((infoPtr->lastChar - src) > 1) {
-		switch (src[1]) {
-		    case '<':
-			infoPtr->lexeme = LEFT_SHIFT;
-			infoPtr->size = 2;
-			infoPtr->next = src+2;
-			break;
-		    case '=':
-			infoPtr->lexeme = LEQ;
-			infoPtr->size = 2;
-			infoPtr->next = src+2;
-			break;
-		}
-	    }
-	    parsePtr->term = infoPtr->next;
-	    return TCL_OK;
-
-	case '>':
-	    infoPtr->lexeme = GREATER;
-	    if ((infoPtr->lastChar - src) > 1) {
-		switch (src[1]) {
-		    case '>':
-			infoPtr->lexeme = RIGHT_SHIFT;
-			infoPtr->size = 2;
-			infoPtr->next = src+2;
-			break;
-		    case '=':
-			infoPtr->lexeme = GEQ;
-			infoPtr->size = 2;
-			infoPtr->next = src+2;
-			break;
-		}
-	    }
-	    parsePtr->term = infoPtr->next;
-	    return TCL_OK;
-
-	case '=':
-	    infoPtr->lexeme = UNKNOWN;
-	    if ((src[1] == '=') && ((infoPtr->lastChar - src) > 1)) {
-		infoPtr->lexeme = EQUAL;
-		infoPtr->size = 2;
-		infoPtr->next = src+2;
-	    }
-	    parsePtr->term = infoPtr->next;
-	    return TCL_OK;
-
-	case '!':
-	    infoPtr->lexeme = NOT;
-	    if ((src[1] == '=') && ((infoPtr->lastChar - src) > 1)) {
-		infoPtr->lexeme = NEQ;
-		infoPtr->size = 2;
-		infoPtr->next = src+2;
-	    }
-	    parsePtr->term = infoPtr->next;
-	    return TCL_OK;
-
-	case '&':
-	    infoPtr->lexeme = BIT_AND;
-	    if ((src[1] == '&') && ((infoPtr->lastChar - src) > 1)) {
-		infoPtr->lexeme = AND;
-		infoPtr->size = 2;
-		infoPtr->next = src+2;
-	    }
-	    parsePtr->term = infoPtr->next;
-	    return TCL_OK;
-
-	case '^':
-	    infoPtr->lexeme = BIT_XOR;
-	    return TCL_OK;
-
-	case '|':
-	    infoPtr->lexeme = BIT_OR;
-	    if ((src[1] == '|') && ((infoPtr->lastChar - src) > 1)) {
-		infoPtr->lexeme = OR;
-		infoPtr->size = 2;
-		infoPtr->next = src+2;
-	    }
-	    parsePtr->term = infoPtr->next;
-	    return TCL_OK;
-
-	case '~':
-	    infoPtr->lexeme = BIT_NOT;
-	    return TCL_OK;
-
-	case 'e':
-	    if ((src[1] == 'q') && ((infoPtr->lastChar - src) > 1)) {
-		infoPtr->lexeme = STREQ;
-		infoPtr->size = 2;
-		infoPtr->next = src+2;
-		parsePtr->term = infoPtr->next;
-		return TCL_OK;
-	    } else {
-		goto checkFuncName;
-	    }
-
-	case 'n':
-	    if ((src[1] == 'e') && ((infoPtr->lastChar - src) > 1)) {
-		infoPtr->lexeme = STRNEQ;
-		infoPtr->size = 2;
-		infoPtr->next = src+2;
-		parsePtr->term = infoPtr->next;
-		return TCL_OK;
-	    } else {
-		goto checkFuncName;
-	    }
-
-	default:
-	checkFuncName:
-	    length = (infoPtr->lastChar - src);
-	    if (Tcl_UtfCharComplete(src, length)) {
-		offset = Tcl_UtfToUniChar(src, &ch);
-	    } else {
-		char utfBytes[TCL_UTF_MAX];
-		memcpy(utfBytes, src, (size_t) length);
-		utfBytes[length] = '\0';
-		offset = Tcl_UtfToUniChar(utfBytes, &ch);
-	    }
-	    c = UCHAR(ch);
-	    if (isalpha(UCHAR(c))) {	/* INTL: ISO only. */
-		infoPtr->lexeme = FUNC_NAME;
-		while (isalnum(UCHAR(c)) || (c == '_')) { /* INTL: ISO only. */
-		    src += offset; length -= offset;
-		    if (Tcl_UtfCharComplete(src, length)) {
-			offset = Tcl_UtfToUniChar(src, &ch);
-		    } else {
-			char utfBytes[TCL_UTF_MAX];
-			memcpy(utfBytes, src, (size_t) length);
-			utfBytes[length] = '\0';
-			offset = Tcl_UtfToUniChar(utfBytes, &ch);
-		    }
-		    c = UCHAR(ch);
-		}
-		infoPtr->size = (src - infoPtr->start);
-		infoPtr->next = src;
-		parsePtr->term = infoPtr->next;
-		return TCL_OK;
-	    }
-	    infoPtr->lexeme = UNKNOWN_CHAR;
-	    return TCL_OK;
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclParseInteger --
- *
- *	Scans up to numBytes bytes starting at src, and checks whether
- *	the leading bytes look like an integer's string representation.
- *
- * Results:
- *	Returns 0 if the leading bytes do not look like an integer.
- *	Otherwise, returns the number of bytes examined that look
- *	like an integer.  This may be less than numBytes if the integer
- *	is only the leading part of the string.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclParseInteger(string, numBytes)
-    register CONST char *string;/* The string to examine. */
-    register int numBytes;	/* Max number of bytes to scan. */
-{
-    register CONST char *p = string;
-
-    /* Take care of introductory "0x" */
-    if ((numBytes > 1) && (p[0] == '0') && ((p[1] == 'x') || (p[1] == 'X'))) {
-	int scanned;
-	Tcl_UniChar ch;
-	p+=2; numBytes -= 2;
- 	scanned = TclParseHex(p, numBytes, &ch);
-	if (scanned) {
-	    return scanned + 2;
-	}
-
-	/* Recognize the 0 as valid integer, but x is left behind */
-	return 1;
-    }
-    while (numBytes && isdigit(UCHAR(*p))) {	/* INTL: digit */
-	numBytes--; p++;
-    }
-    if (numBytes == 0) {
-        return (p - string);
-    }
-    if ((*p != '.') && (*p != 'e') && (*p != 'E')) {
-        return (p - string);
-    }
-    return 0;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * ParseMaxDoubleLength --
- *
- *      Scans a sequence of bytes checking that the characters could
- *	be in a string rep of a double.
- *
- * Results:
- *	Returns the number of bytes starting with string, runing to, but
- *	not including end, all of which could be part of a string rep.
- *	of a double.  Only character identity is used, no actual
- *	parsing is done.
- *
- *	The legal bytes are '0' - '9', 'A' - 'F', 'a' - 'f', 
- *	'.', '+', '-', 'i', 'I', 'n', 'N', 'p', 'P', 'x',  and 'X'.
- *	This covers the values "Inf" and "Nan" as well as the
- *	decimal and hexadecimal representations recognized by a
- *	C99-compliant strtod().
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-ParseMaxDoubleLength(string, end)
-    register CONST char *string;/* The string to examine. */
-    CONST char *end;		/* Point to the first character past the end
-				 * of the string we are examining. */
-{
-    CONST char *p = string;
-    while (p < end) {
-	switch (*p) {
-	    case '0': case '1': case '2': case '3': case '4': case '5':
-	    case '6': case '7': case '8': case '9': case 'A': case 'B':
-	    case 'C': case 'D': case 'E': case 'F': case 'I': case 'N':
-	    case 'P': case 'X': case 'a': case 'b': case 'c': case 'd':
-	    case 'e': case 'f': case 'i': case 'n': case 'p': case 'x':
-	    case '.': case '+': case '-':
-		p++;
-		break;
-	    default:
-		goto done;
-	}
-    }
-    done:
-    return (p - string);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * PrependSubExprTokens --
- *
- *	This procedure is called after the operands of an subexpression have
- *	been parsed. It generates two tokens: a TCL_TOKEN_SUB_EXPR token for
- *	the subexpression, and a TCL_TOKEN_OPERATOR token for its operator.
- *	These two tokens are inserted before the operand tokens.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	If there is insufficient space in parsePtr to hold the new tokens,
- *	additional space is malloc-ed.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-PrependSubExprTokens(op, opBytes, src, srcBytes, firstIndex, infoPtr)
-    CONST char *op;		/* Points to first byte of the operator
-				 * in the source script. */
-    int opBytes;		/* Number of bytes in the operator. */
-    CONST char *src;		/* Points to first byte of the subexpression
-				 * in the source script. */
-    int srcBytes;		/* Number of bytes in subexpression's
-				 * source. */
-    int firstIndex;		/* Index of first token already emitted for
-				 * operator's first (or only) operand. */
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-{
-    Tcl_Parse *parsePtr = infoPtr->parsePtr;
-    Tcl_Token *tokenPtr, *firstTokenPtr;
-    int numToMove;
-
-    if ((parsePtr->numTokens + 1) >= parsePtr->tokensAvailable) {
-	TclExpandTokenArray(parsePtr);
-    }
-    firstTokenPtr = &parsePtr->tokenPtr[firstIndex];
-    tokenPtr = (firstTokenPtr + 2);
-    numToMove = (parsePtr->numTokens - firstIndex);
-    memmove((VOID *) tokenPtr, (VOID *) firstTokenPtr,
-            (size_t) (numToMove * sizeof(Tcl_Token)));
-    parsePtr->numTokens += 2;
-    
-    tokenPtr = firstTokenPtr;
-    tokenPtr->type = TCL_TOKEN_SUB_EXPR;
-    tokenPtr->start = src;
-    tokenPtr->size = srcBytes;
-    tokenPtr->numComponents = parsePtr->numTokens - (firstIndex + 1);
-    
-    tokenPtr++;
-    tokenPtr->type = TCL_TOKEN_OPERATOR;
-    tokenPtr->start = op;
-    tokenPtr->size = opBytes;
-    tokenPtr->numComponents = 0;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * LogSyntaxError --
- *
- *	This procedure is invoked after an error occurs when parsing an
- *	expression. It sets the interpreter result to an error message
- *	describing the error.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Sets the interpreter result to an error message describing the
- *	expression that was being parsed when the error occurred, and why
- *	the parser considers that to be a syntax error at all.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-LogSyntaxError(infoPtr, extraInfo)
-    ParseInfo *infoPtr;		/* Holds the parse state for the
-				 * expression being parsed. */
-    CONST char *extraInfo;	/* String to provide extra information
-				 * about the syntax error. */
-{
-    int numBytes = (infoPtr->lastChar - infoPtr->originalExpr);
-    char buffer[100];
-
-    if (numBytes > 60) {
-	sprintf(buffer, "syntax error in expression \"%.60s...\"",
-		infoPtr->originalExpr);
-    } else {
-	sprintf(buffer, "syntax error in expression \"%.*s\"",
-		numBytes, infoPtr->originalExpr);
-    }
-    Tcl_ResetResult(infoPtr->parsePtr->interp);
-    Tcl_AppendStringsToObj(Tcl_GetObjResult(infoPtr->parsePtr->interp),
-	    buffer, ": ", extraInfo, (char *) NULL);
-    infoPtr->parsePtr->errorType = TCL_PARSE_SYNTAX;
-    infoPtr->parsePtr->term = infoPtr->start;
-}
diff --git a/generic/tclPathObj.c b/generic/tclPathObj.c
new file mode 100644
index 0000000..95c57bf
--- /dev/null
+++ b/generic/tclPathObj.c
@@ -0,0 +1,2761 @@
+/*
+ * tclPathObj.c --
+ *
+ *	This file contains the implementation of Tcl's "path" object type used
+ *	to represent and manipulate a general (virtual) filesystem entity in
+ *	an efficient manner.
+ *
+ * Copyright (c) 2003 Vince Darley.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include "tclFileSystem.h"
+
+/*
+ * Prototypes for functions defined later in this file.
+ */
+
+static Tcl_Obj *	AppendPath(Tcl_Obj *head, Tcl_Obj *tail);
+static void		DupFsPathInternalRep(Tcl_Obj *srcPtr,
+			    Tcl_Obj *copyPtr);
+static void		FreeFsPathInternalRep(Tcl_Obj *pathPtr);
+static void		UpdateStringOfFsPath(Tcl_Obj *pathPtr);
+static int		SetFsPathFromAny(Tcl_Interp *interp, Tcl_Obj *pathPtr);
+static int		FindSplitPos(const char *path, int separator);
+static int		IsSeparatorOrNull(int ch);
+static Tcl_Obj *	GetExtension(Tcl_Obj *pathPtr);
+static int		MakePathFromNormalized(Tcl_Interp *interp,
+			    Tcl_Obj *pathPtr);
+
+/*
+ * Define the 'path' object type, which Tcl uses to represent file paths
+ * internally.
+ */
+
+static Tcl_ObjType tclFsPathType = {
+    "path",				/* name */
+    FreeFsPathInternalRep,		/* freeIntRepProc */
+    DupFsPathInternalRep,		/* dupIntRepProc */
+    UpdateStringOfFsPath,		/* updateStringProc */
+    SetFsPathFromAny			/* setFromAnyProc */
+};
+
+/*
+ * struct FsPath --
+ *
+ * Internal representation of a Tcl_Obj of "path" type. This can be used to
+ * represent relative or absolute paths, and has certain optimisations when
+ * used to represent paths which are already normalized and absolute.
+ *
+ * Note that both 'translatedPathPtr' and 'normPathPtr' can be a circular
+ * reference to the container Tcl_Obj of this FsPath.
+ *
+ * There are two cases, with the first being the most common:
+ *
+ * (i) flags == 0, => Ordinary path.
+ *
+ * translatedPathPtr contains the translated path (which may be a circular
+ * reference to the object itself). If it is NULL then the path is pure
+ * normalized (and the normPathPtr will be a circular reference). cwdPtr is
+ * null for an absolute path, and non-null for a relative path (unless the cwd
+ * has never been set, in which case the cwdPtr may also be null for a
+ * relative path).
+ *
+ * (ii) flags != 0, => Special path, see TclNewFSPathObj
+ *
+ * Now, this is a path like 'file join $dir $tail' where, cwdPtr is the $dir
+ * and normPathPtr is the $tail.
+ *
+ */
+
+typedef struct FsPath {
+    Tcl_Obj *translatedPathPtr; /* Name without any ~user sequences. If this
+				 * is NULL, then this is a pure normalized,
+				 * absolute path object, in which the parent
+				 * Tcl_Obj's string rep is already both
+				 * translated and normalized. */
+    Tcl_Obj *normPathPtr;	/* Normalized absolute path, without ., .. or
+				 * ~user sequences. If the Tcl_Obj containing
+				 * this FsPath is already normalized, this may
+				 * be a circular reference back to the
+				 * container. If that is NOT the case, we have
+				 * a refCount on the object. */
+    Tcl_Obj *cwdPtr;		/* If null, path is absolute, else this points
+				 * to the cwd object used for this path. We
+				 * have a refCount on the object. */
+    int flags;			/* Flags to describe interpretation - see
+				 * below. */
+    ClientData nativePathPtr;	/* Native representation of this path, which
+				 * is filesystem dependent. */
+    int filesystemEpoch;	/* Used to ensure the path representation was
+				 * generated during the correct filesystem
+				 * epoch. The epoch changes when
+				 * filesystem-mounts are changed. */
+    Tcl_Filesystem *fsPtr;	/* The Tcl_Filesystem that claims this path */
+} FsPath;
+
+/*
+ * Flag values for FsPath->flags.
+ */
+
+#define TCLPATH_APPENDED 1
+#define TCLPATH_NEEDNORM 4
+
+/*
+ * Define some macros to give us convenient access to path-object specific
+ * fields.
+ */
+
+#define PATHOBJ(pathPtr) ((FsPath *) (pathPtr)->internalRep.twoPtrValue.ptr1)
+#define SETPATHOBJ(pathPtr,fsPathPtr) \
+	((pathPtr)->internalRep.twoPtrValue.ptr1 = (void *) (fsPathPtr))
+#define PATHFLAGS(pathPtr) (PATHOBJ(pathPtr)->flags)
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclFSNormalizeAbsolutePath --
+ *
+ *	Takes an absolute path specification and computes a 'normalized' path
+ *	from it.
+ *
+ *	A normalized path is one which has all '../', './' removed. Also it is
+ *	one which is in the 'standard' format for the native platform. On
+ *	Unix, this means the path must be free of symbolic links/aliases, and
+ *	on Windows it means we want the long form, with that long form's
+ *	case-dependence (which gives us a unique, case-dependent path).
+ *
+ *	The behaviour of this function if passed a non-absolute path is NOT
+ *	defined.
+ *
+ *	pathPtr may have a refCount of zero, or may be a shared object.
+ *
+ * Results:
+ *	The result is returned in a Tcl_Obj with a refCount of 1, which is
+ *	therefore owned by the caller. It must be freed (with
+ *	Tcl_DecrRefCount) by the caller when no longer needed.
+ *
+ * Side effects:
+ *	None (beyond the memory allocation for the result).
+ *
+ * Special note:
+ *	This code was originally based on code from Matt Newman and
+ *	Jean-Claude Wippler, but has since been totally rewritten by Vince
+ *	Darley to deal with symbolic links.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclFSNormalizeAbsolutePath(
+    Tcl_Interp *interp,		/* Interpreter to use */
+    Tcl_Obj *pathPtr)		/* Absolute path to normalize */
+{
+    const char *dirSep, *oldDirSep;
+    int first = 1;		/* Set to zero once we've passed the first
+				 * directory separator - we can't use '..' to
+				 * remove the volume in a path. */
+    Tcl_Obj *retVal = NULL;
+    dirSep = TclGetString(pathPtr);
+
+    if (tclPlatform == TCL_PLATFORM_WINDOWS) {
+	if (   (dirSep[0] == '/' || dirSep[0] == '\\')
+	    && (dirSep[1] == '/' || dirSep[1] == '\\')
+	    && (dirSep[2] == '?')
+	    && (dirSep[3] == '/' || dirSep[3] == '\\')) {
+	    /* NT extended path */
+	    dirSep += 4;
+
+	    if (   (dirSep[0] == 'U' || dirSep[0] == 'u')
+		&& (dirSep[1] == 'N' || dirSep[1] == 'n')
+		&& (dirSep[2] == 'C' || dirSep[2] == 'c')
+		&& (dirSep[3] == '/' || dirSep[3] == '\\')) {
+		/* NT extended UNC path */
+		dirSep += 4;
+	    }
+	}
+	if (dirSep[0] != 0 && dirSep[1] == ':' &&
+		(dirSep[2] == '/' || dirSep[2] == '\\')) {
+	    /* Do nothing */
+	} else if ((dirSep[0] == '/' || dirSep[0] == '\\')
+		&& (dirSep[1] == '/' || dirSep[1] == '\\')) {
+	    /*
+	     * UNC style path, where we must skip over the first separator,
+	     * since the first two segments are actually inseparable.
+	     */
+
+	    dirSep += 2;
+	    dirSep += FindSplitPos(dirSep, '/');
+	    if (*dirSep != 0) {
+		dirSep++;
+	    }
+	}
+    }
+
+    /*
+     * Scan forward from one directory separator to the next, checking for
+     * '..' and '.' sequences which must be handled specially. In particular
+     * handling of '..' can be complicated if the directory before is a link,
+     * since we will have to expand the link to be able to back up one level.
+     */
+
+    while (*dirSep != 0) {
+	oldDirSep = dirSep;
+	if (!first) {
+	    dirSep++;
+	}
+	dirSep += FindSplitPos(dirSep, '/');
+	if (dirSep[0] == 0 || dirSep[1] == 0) {
+	    if (retVal != NULL) {
+		Tcl_AppendToObj(retVal, oldDirSep, dirSep - oldDirSep);
+	    }
+	    break;
+	}
+	if (dirSep[1] == '.') {
+	    if (retVal != NULL) {
+		Tcl_AppendToObj(retVal, oldDirSep, dirSep - oldDirSep);
+		oldDirSep = dirSep;
+	    }
+	again:
+	    if (IsSeparatorOrNull(dirSep[2])) {
+		/*
+		 * Need to skip '.' in the path.
+		 */
+		int curLen;
+
+		if (retVal == NULL) {
+		    const char *path = TclGetString(pathPtr);
+		    retVal = Tcl_NewStringObj(path, dirSep - path);
+		    Tcl_IncrRefCount(retVal);
+		}
+		(void) Tcl_GetStringFromObj(retVal, &curLen);
+		if (curLen == 0) {
+		    Tcl_AppendToObj(retVal, dirSep, 1);
+		}
+		dirSep += 2;
+		oldDirSep = dirSep;
+		if (dirSep[0] != 0 && dirSep[1] == '.') {
+		    goto again;
+		}
+		continue;
+	    }
+	    if (dirSep[2] == '.' && IsSeparatorOrNull(dirSep[3])) {
+		Tcl_Obj *link;
+		int curLen;
+		char *linkStr;
+
+		/*
+		 * Have '..' so need to skip previous directory.
+		 */
+
+		if (retVal == NULL) {
+		    const char *path = TclGetString(pathPtr);
+
+		    retVal = Tcl_NewStringObj(path, dirSep - path);
+		    Tcl_IncrRefCount(retVal);
+		}
+		(void) Tcl_GetStringFromObj(retVal, &curLen);
+		if (curLen == 0) {
+		    Tcl_AppendToObj(retVal, dirSep, 1);
+		}
+		if (!first || (tclPlatform == TCL_PLATFORM_UNIX)) {
+		    link = Tcl_FSLink(retVal, NULL, 0);
+
+		    /* Safety check in case driver caused sharing */
+		    if (Tcl_IsShared(retVal)) {
+			TclDecrRefCount(retVal);
+			retVal = Tcl_DuplicateObj(retVal);
+			Tcl_IncrRefCount(retVal);
+		    }
+
+		    if (link != NULL) {
+			/*
+			 * Got a link. Need to check if the link is relative
+			 * or absolute, for those platforms where relative
+			 * links exist.
+			 */
+
+			if (tclPlatform != TCL_PLATFORM_WINDOWS &&
+				Tcl_FSGetPathType(link) == TCL_PATH_RELATIVE) {
+			    /*
+			     * We need to follow this link which is relative
+			     * to retVal's directory. This means concatenating
+			     * the link onto the directory of the path so far.
+			     */
+
+			    const char *path =
+				    Tcl_GetStringFromObj(retVal, &curLen);
+
+			    while (--curLen >= 0) {
+				if (IsSeparatorOrNull(path[curLen])) {
+				    break;
+				}
+			    }
+
+			    /*
+			     * We want the trailing slash.
+			     */
+
+			    Tcl_SetObjLength(retVal, curLen+1);
+			    Tcl_AppendObjToObj(retVal, link);
+			    TclDecrRefCount(link);
+			    linkStr = Tcl_GetStringFromObj(retVal, &curLen);
+			} else {
+			    /*
+			     * Absolute link.
+			     */
+
+			    TclDecrRefCount(retVal);
+			    if (Tcl_IsShared(link)) {
+				retVal = Tcl_DuplicateObj(link);
+				TclDecrRefCount(link);
+			    } else {
+				retVal = link;
+			    }
+			    linkStr = Tcl_GetStringFromObj(retVal, &curLen);
+
+			    /*
+			     * Convert to forward-slashes on windows.
+			     */
+
+			    if (tclPlatform == TCL_PLATFORM_WINDOWS) {
+				int i;
+
+				for (i = 0; i < curLen; i++) {
+				    if (linkStr[i] == '\\') {
+					linkStr[i] = '/';
+				    }
+				}
+			    }
+			}
+		    } else {
+			linkStr = Tcl_GetStringFromObj(retVal, &curLen);
+		    }
+
+		    /*
+		     * Either way, we now remove the last path element.
+		     * (but not the first character of the path)
+		     */
+
+		    while (--curLen >= 0) {
+			if (IsSeparatorOrNull(linkStr[curLen])) {
+			    if (curLen) {
+				Tcl_SetObjLength(retVal, curLen);
+			    } else {
+				Tcl_SetObjLength(retVal, 1);
+			    }
+			    break;
+			}
+		    }
+		}
+		dirSep += 3;
+		oldDirSep = dirSep;
+
+		if ((curLen == 0) && (dirSep[0] != 0)) {
+		    Tcl_SetObjLength(retVal, 0);
+		}
+
+		if (dirSep[0] != 0 && dirSep[1] == '.') {
+		    goto again;
+		}
+		continue;
+	    }
+	}
+	first = 0;
+	if (retVal != NULL) {
+	    Tcl_AppendToObj(retVal, oldDirSep, dirSep - oldDirSep);
+	}
+    }
+
+    /*
+     * If we didn't make any changes, just use the input path.
+     */
+
+    if (retVal == NULL) {
+	retVal = pathPtr;
+	Tcl_IncrRefCount(retVal);
+
+	if (Tcl_IsShared(retVal)) {
+	    /*
+	     * Unfortunately, the platform-specific normalization code which
+	     * will be called below has no way of dealing with the case where
+	     * an object is shared. It is expecting to modify an object in
+	     * place. So, we must duplicate this here to ensure an object with
+	     * a single ref-count.
+	     *
+	     * If that changes in the future (e.g. the normalize proc is given
+	     * one object and is able to return a different one), then we
+	     * could remove this code.
+	     */
+
+	    TclDecrRefCount(retVal);
+	    retVal = Tcl_DuplicateObj(pathPtr);
+	    Tcl_IncrRefCount(retVal);
+	}
+    }
+
+    /*
+     * Ensure a windows drive like C:/ has a trailing separator
+     */
+
+    if (tclPlatform == TCL_PLATFORM_WINDOWS) {
+	int len;
+	const char *path = Tcl_GetStringFromObj(retVal, &len);
+
+	if (len == 2 && path[0] != 0 && path[1] == ':') {
+	    if (Tcl_IsShared(retVal)) {
+		TclDecrRefCount(retVal);
+		retVal = Tcl_DuplicateObj(retVal);
+		Tcl_IncrRefCount(retVal);
+	    }
+	    Tcl_AppendToObj(retVal, "/", 1);
+	}
+    }
+
+    /*
+     * Now we have an absolute path, with no '..', '.' sequences, but it still
+     * may not be in 'unique' form, depending on the platform. For instance,
+     * Unix is case-sensitive, so the path is ok. Windows is case-insensitive,
+     * and also has the weird 'longname/shortname' thing (e.g. C:/Program
+     * Files/ and C:/Progra~1/ are equivalent).
+     *
+     * Virtual file systems which may be registered may have other criteria
+     * for normalizing a path.
+     */
+
+    TclFSNormalizeToUniquePath(interp, retVal, 0);
+
+    /*
+     * Since we know it is a normalized path, we can actually convert this
+     * object into an FsPath for greater efficiency
+     */
+
+    MakePathFromNormalized(interp, retVal);
+
+    /*
+     * This has a refCount of 1 for the caller, unlike many Tcl_Obj APIs.
+     */
+
+    return retVal;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FSGetPathType --
+ *
+ *	Determines whether a given path is relative to the current directory,
+ *	relative to the current volume, or absolute.
+ *
+ * Results:
+ *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
+ *	TCL_PATH_VOLUME_RELATIVE.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_PathType
+Tcl_FSGetPathType(
+    Tcl_Obj *pathPtr)
+{
+    return TclFSGetPathType(pathPtr, NULL, NULL);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFSGetPathType --
+ *
+ *	Determines whether a given path is relative to the current directory,
+ *	relative to the current volume, or absolute. If the caller wishes to
+ *	know which filesystem claimed the path (in the case for which the path
+ *	is absolute), then a reference to a filesystem pointer can be passed
+ *	in (but passing NULL is acceptable).
+ *
+ * Results:
+ *	Returns one of TCL_PATH_ABSOLUTE, TCL_PATH_RELATIVE, or
+ *	TCL_PATH_VOLUME_RELATIVE. The filesystem reference will be set if and
+ *	only if it is non-NULL and the function's return value is
+ *	TCL_PATH_ABSOLUTE.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_PathType
+TclFSGetPathType(
+    Tcl_Obj *pathPtr,
+    Tcl_Filesystem **filesystemPtrPtr,
+    int *driveNameLengthPtr)
+{
+    FsPath *fsPathPtr;
+
+    if (Tcl_FSConvertToPathType(NULL, pathPtr) != TCL_OK) {
+	return TclGetPathType(pathPtr, filesystemPtrPtr, driveNameLengthPtr,
+		NULL);
+    }
+
+    fsPathPtr = PATHOBJ(pathPtr);
+    if (fsPathPtr->cwdPtr == NULL) {
+	return TclGetPathType(pathPtr, filesystemPtrPtr, driveNameLengthPtr,
+		NULL);
+    }
+
+    if (PATHFLAGS(pathPtr) == 0) {
+	/* The path is not absolute... */
+#ifdef __WIN32__
+	/* ... on Windows we must make another call to determine whether
+	 * it's relative or volumerelative [Bug 2571597]. */
+	return TclGetPathType(pathPtr, filesystemPtrPtr, driveNameLengthPtr,
+		NULL);
+#else
+	/* On other systems, quickly deduce !absolute -> relative */
+	return TCL_PATH_RELATIVE;
+#endif
+    }
+    return TclFSGetPathType(fsPathPtr->cwdPtr, filesystemPtrPtr,
+	    driveNameLengthPtr);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclPathPart
+ *
+ *	This function calculates the requested part of the given path, which
+ *	can be:
+ *
+ *	- the directory above ('file dirname')
+ *	- the tail            ('file tail')
+ *	- the extension       ('file extension')
+ *	- the root            ('file root')
+ *
+ *	The 'portion' parameter dictates which of these to calculate. There
+ *	are a number of special cases both to be more efficient, and because
+ *	the behaviour when given a path with only a single element is defined
+ *	to require the expansion of that single element, where possible.
+ *
+ *	Should look into integrating 'FileBasename' in tclFCmd.c into this
+ *	function.
+ *
+ * Results:
+ *	NULL if an error occurred, otherwise a Tcl_Obj owned by the caller
+ *	(i.e. most likely with refCount 1).
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclPathPart(
+    Tcl_Interp *interp,		/* Used for error reporting */
+    Tcl_Obj *pathPtr,		/* Path to take dirname of */
+    Tcl_PathPart portion)	/* Requested portion of name */
+{
+    if (pathPtr->typePtr == &tclFsPathType) {
+	FsPath *fsPathPtr = PATHOBJ(pathPtr);
+
+	if (PATHFLAGS(pathPtr) != 0) {
+	    switch (portion) {
+	    case TCL_PATH_DIRNAME: {
+		/*
+		 * Check if the joined-on bit has any directory delimiters in
+		 * it. If so, the 'dirname' would be a joining of the main
+		 * part with the dirname of the joined-on bit. We could handle
+		 * that special case here, but we don't, and instead just use
+		 * the standardPath code.
+		 */
+
+		int numBytes;
+		const char *rest =
+			Tcl_GetStringFromObj(fsPathPtr->normPathPtr, &numBytes);
+
+		if (strchr(rest, '/') != NULL) {
+		    goto standardPath;
+		}
+		/*
+		 * If the joined-on bit is empty, then [file dirname] is
+		 * documented to return all but the last non-empty element
+		 * of the path, so we need to split apart the main part to
+		 * get the right answer.  We could do that here, but it's
+		 * simpler to fall back to the standardPath code.
+		 * [Bug 2710920]
+		 */
+		if (numBytes == 0) {
+		    goto standardPath;
+		}
+		if (tclPlatform == TCL_PLATFORM_WINDOWS
+			&& strchr(rest, '\\') != NULL) {
+		    goto standardPath;
+		}
+
+		/*
+		 * The joined-on path is simple, so we can just return here.
+		 */
+
+		Tcl_IncrRefCount(fsPathPtr->cwdPtr);
+		return fsPathPtr->cwdPtr;
+	    }
+	    case TCL_PATH_TAIL: {
+		/*
+		 * Check if the joined-on bit has any directory delimiters in
+		 * it. If so, the 'tail' would be only the part following the
+		 * last delimiter. We could handle that special case here, but
+		 * we don't, and instead just use the standardPath code.
+		 */
+
+		int numBytes;
+		const char *rest =
+			Tcl_GetStringFromObj(fsPathPtr->normPathPtr, &numBytes);
+
+		if (strchr(rest, '/') != NULL) {
+		    goto standardPath;
+		}
+		/*
+		 * If the joined-on bit is empty, then [file tail] is
+		 * documented to return the last non-empty element
+		 * of the path, so we need to split off the last element
+		 * of the main part to get the right answer.  We could do
+		 * that here, but it's simpler to fall back to the
+		 * standardPath code.  [Bug 2710920]
+		 */
+		if (numBytes == 0) {
+		    goto standardPath;
+		}
+		if (tclPlatform == TCL_PLATFORM_WINDOWS
+			&& strchr(rest, '\\') != NULL) {
+		    goto standardPath;
+		}
+		Tcl_IncrRefCount(fsPathPtr->normPathPtr);
+		return fsPathPtr->normPathPtr;
+	    }
+	    case TCL_PATH_EXTENSION:
+		return GetExtension(fsPathPtr->normPathPtr);
+	    case TCL_PATH_ROOT: {
+		const char *fileName, *extension;
+		int length;
+
+		fileName = Tcl_GetStringFromObj(fsPathPtr->normPathPtr,
+			&length);
+		extension = TclGetExtension(fileName);
+		if (extension == NULL) {
+		    /*
+		     * There is no extension so the root is the same as the
+		     * path we were given.
+		     */
+
+		    Tcl_IncrRefCount(pathPtr);
+		    return pathPtr;
+		} else {
+		    /*
+		     * Need to return the whole path with the extension
+		     * suffix removed.  Do that by joining our "head" to
+		     * our "tail" with the extension suffix removed from
+		     * the tail.
+		     */
+
+		    Tcl_Obj *resultPtr =
+			    TclNewFSPathObj(fsPathPtr->cwdPtr, fileName,
+			    (int)(length - strlen(extension)));
+
+		    Tcl_IncrRefCount(resultPtr);
+		    return resultPtr;
+		}
+	    }
+	    default:
+		/* We should never get here */
+		Tcl_Panic("Bad portion to TclPathPart");
+		/* For less clever compilers */
+		return NULL;
+	    }
+	} else if (fsPathPtr->cwdPtr != NULL) {
+	    /* Relative path */
+	    goto standardPath;
+	} else {
+	    /* Absolute path */
+	    goto standardPath;
+	}
+    } else {
+	int splitElements;
+	Tcl_Obj *splitPtr, *resultPtr;
+
+    standardPath:
+	resultPtr = NULL;
+	if (portion == TCL_PATH_EXTENSION) {
+	    return GetExtension(pathPtr);
+	} else if (portion == TCL_PATH_ROOT) {
+	    int length;
+	    const char *fileName, *extension;
+
+	    fileName = Tcl_GetStringFromObj(pathPtr, &length);
+	    extension = TclGetExtension(fileName);
+	    if (extension == NULL) {
+		Tcl_IncrRefCount(pathPtr);
+		return pathPtr;
+	    } else {
+		Tcl_Obj *root = Tcl_NewStringObj(fileName,
+			(int) (length - strlen(extension)));
+
+		Tcl_IncrRefCount(root);
+		return root;
+	    }
+	}
+
+	/*
+	 * The behaviour we want here is slightly different to the standard
+	 * Tcl_FSSplitPath in the handling of home directories;
+	 * Tcl_FSSplitPath preserves the "~" while this code computes the
+	 * actual full path name, if we had just a single component.
+	 */
+
+	splitPtr = Tcl_FSSplitPath(pathPtr, &splitElements);
+	Tcl_IncrRefCount(splitPtr);
+	if (splitElements == 1  &&  TclGetString(pathPtr)[0] == '~') {
+	    Tcl_Obj *norm;
+
+	    TclDecrRefCount(splitPtr);
+	    norm = Tcl_FSGetNormalizedPath(interp, pathPtr);
+	    if (norm == NULL) {
+		return NULL;
+	    }
+	    splitPtr = Tcl_FSSplitPath(norm, &splitElements);
+	    Tcl_IncrRefCount(splitPtr);
+	}
+	if (portion == TCL_PATH_TAIL) {
+	    /*
+	     * Return the last component, unless it is the only component, and
+	     * it is the root of an absolute path.
+	     */
+
+	    if ((splitElements > 0) && ((splitElements > 1) ||
+		    (Tcl_FSGetPathType(pathPtr) == TCL_PATH_RELATIVE))) {
+		Tcl_ListObjIndex(NULL, splitPtr, splitElements-1, &resultPtr);
+	    } else {
+		resultPtr = Tcl_NewObj();
+	    }
+	} else {
+	    /*
+	     * Return all but the last component. If there is only one
+	     * component, return it if the path was non-relative, otherwise
+	     * return the current directory.
+	     */
+
+	    if (splitElements > 1) {
+		resultPtr = Tcl_FSJoinPath(splitPtr, splitElements - 1);
+	    } else if (splitElements == 0 ||
+		    (Tcl_FSGetPathType(pathPtr) == TCL_PATH_RELATIVE)) {
+		TclNewLiteralStringObj(resultPtr, ".");
+	    } else {
+		Tcl_ListObjIndex(NULL, splitPtr, 0, &resultPtr);
+	    }
+	}
+	Tcl_IncrRefCount(resultPtr);
+	TclDecrRefCount(splitPtr);
+	return resultPtr;
+    }
+}
+
+/*
+ * Simple helper function
+ */
+
+static Tcl_Obj *
+GetExtension(
+    Tcl_Obj *pathPtr)
+{
+    const char *tail, *extension;
+    Tcl_Obj *ret;
+
+    tail = TclGetString(pathPtr);
+    extension = TclGetExtension(tail);
+    if (extension == NULL) {
+	ret = Tcl_NewObj();
+    } else {
+	ret = Tcl_NewStringObj(extension, -1);
+    }
+    Tcl_IncrRefCount(ret);
+    return ret;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSJoinPath --
+ *
+ *	This function takes the given Tcl_Obj, which should be a valid list,
+ *	and returns the path object given by considering the first 'elements'
+ *	elements as valid path segments (each path segment may be a complete
+ *	path, a partial path or just a single possible directory or file
+ *	name). If any path segment is actually an absolute path, then all
+ *	prior path segments are discarded.
+ *
+ *	If elements < 0, we use the entire list that was given.
+ *
+ *	It is possible that the returned object is actually an element of the
+ *	given list, so the caller should be careful to store a refCount to it
+ *	before freeing the list.
+ *
+ * Results:
+ *	Returns object with refCount of zero, (or if non-zero, it has
+ *	references elsewhere in Tcl). Either way, the caller must increment
+ *	its refCount before use. Note that in the case where the caller has
+ *	asked to join zero elements of the list, the return value will be an
+ *	empty-string Tcl_Obj.
+ *
+ *	If the given listObj was invalid, then the calling routine has a bug,
+ *	and this function will just return NULL.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_FSJoinPath(
+    Tcl_Obj *listObj,		/* Path elements to join, may have a zero
+				 * reference count. */
+    int elements)		/* Number of elements to use (-1 = all) */
+{
+    Tcl_Obj *res;
+    int i;
+    Tcl_Filesystem *fsPtr = NULL;
+
+    if (elements < 0) {
+	if (Tcl_ListObjLength(NULL, listObj, &elements) != TCL_OK) {
+	    return NULL;
+	}
+    } else {
+	/*
+	 * Just make sure it is a valid list.
+	 */
+
+	int listTest;
+
+	if (Tcl_ListObjLength(NULL, listObj, &listTest) != TCL_OK) {
+	    return NULL;
+	}
+
+	/*
+	 * Correct this if it is too large, otherwise we will waste our time
+	 * joining null elements to the path.
+	 */
+
+	if (elements > listTest) {
+	    elements = listTest;
+	}
+    }
+
+    res = NULL;
+
+    for (i = 0; i < elements; i++) {
+	Tcl_Obj *elt, *driveName = NULL;
+	int driveNameLength, strEltLen, length;
+	Tcl_PathType type;
+	char *strElt, *ptr;
+
+	Tcl_ListObjIndex(NULL, listObj, i, &elt);
+
+	/*
+	 * This is a special case where we can be much more efficient, where
+	 * we are joining a single relative path onto an object that is
+	 * already of path type. The 'TclNewFSPathObj' call below creates an
+	 * object which can be normalized more efficiently. Currently we only
+	 * use the special case when we have exactly two elements, but we
+	 * could expand that in the future.
+	 */
+
+	if ((i == (elements-2)) && (i == 0) && (elt->typePtr == &tclFsPathType)
+		&& !(elt->bytes != NULL && (elt->bytes[0] == '\0'))) {
+	    Tcl_Obj *tail;
+
+	    Tcl_ListObjIndex(NULL, listObj, i+1, &tail);
+	    type = TclGetPathType(tail, NULL, NULL, NULL);
+	    if (type == TCL_PATH_RELATIVE) {
+		const char *str;
+		int len;
+
+		str = Tcl_GetStringFromObj(tail, &len);
+		if (len == 0) {
+		    /*
+		     * This happens if we try to handle the root volume '/'.
+		     * There's no need to return a special path object, when
+		     * the base itself is just fine!
+		     */
+
+		    if (res != NULL) {
+			TclDecrRefCount(res);
+		    }
+		    return elt;
+		}
+
+		/*
+		 * If it doesn't begin with '.' and is a unix path or it a
+		 * windows path without backslashes, then we can be very
+		 * efficient here. (In fact even a windows path with
+		 * backslashes can be joined efficiently, but the path object
+		 * would not have forward slashes only, and this would
+		 * therefore contradict our 'file join' documentation).
+		 */
+
+		if (str[0] != '.' && ((tclPlatform != TCL_PLATFORM_WINDOWS)
+			|| (strchr(str, '\\') == NULL))) {
+		    /*
+		     * Finally, on Windows, 'file join' is defined to convert
+		     * all backslashes to forward slashes, so the base part
+		     * cannot have backslashes either.
+		     */
+
+		    if ((tclPlatform != TCL_PLATFORM_WINDOWS)
+			    || (strchr(Tcl_GetString(elt), '\\') == NULL)) {
+			if (res != NULL) {
+			    TclDecrRefCount(res);
+			}
+			return TclNewFSPathObj(elt, str, len);
+		    }
+		}
+
+		/*
+		 * Otherwise we don't have an easy join, and we must let the
+		 * more general code below handle things.
+		 */
+	    } else if (tclPlatform == TCL_PLATFORM_UNIX) {
+		if (res != NULL) {
+		    TclDecrRefCount(res);
+		}
+		return tail;
+	    } else {
+		const char *str = TclGetString(tail);
+
+		if (tclPlatform == TCL_PLATFORM_WINDOWS) {
+		    if (strchr(str, '\\') == NULL) {
+			if (res != NULL) {
+			    TclDecrRefCount(res);
+			}
+			return tail;
+		    }
+		}
+	    }
+	}
+	strElt = Tcl_GetStringFromObj(elt, &strEltLen);
+	type = TclGetPathType(elt, &fsPtr, &driveNameLength, &driveName);
+	if (type != TCL_PATH_RELATIVE) {
+	    /*
+	     * Zero out the current result.
+	     */
+
+	    if (res != NULL) {
+		TclDecrRefCount(res);
+	    }
+
+	    if (driveName != NULL) {
+		/*
+		 * We've been given a separate drive-name object, because the
+		 * prefix in 'elt' is not in a suitable format for us (e.g. it
+		 * may contain irrelevant multiple separators, like
+		 * C://///foo).
+		 */
+
+		res = Tcl_DuplicateObj(driveName);
+		TclDecrRefCount(driveName);
+
+		/*
+		 * Do not set driveName to NULL, because we will check its
+		 * value below (but we won't access the contents, since those
+		 * have been cleaned-up).
+		 */
+	    } else {
+		res = Tcl_NewStringObj(strElt, driveNameLength);
+	    }
+	    strElt += driveNameLength;
+	} else if (driveName != NULL) {
+	    Tcl_DecrRefCount(driveName);
+	}
+
+	/*
+	 * Optimisation block: if this is the last element to be examined, and
+	 * it is absolute or the only element, and the drive-prefix was ok (if
+	 * there is one), it might be that the path is already in a suitable
+	 * form to be returned. Then we can short-cut the rest of this
+	 * function.
+	 */
+
+	if ((driveName == NULL) && (i == (elements - 1))
+		&& (type != TCL_PATH_RELATIVE || res == NULL)) {
+	    /*
+	     * It's the last path segment. Perform a quick check if the path
+	     * is already in a suitable form.
+	     */
+
+	    if (tclPlatform == TCL_PLATFORM_WINDOWS) {
+		if (strchr(strElt, '\\') != NULL) {
+		    goto noQuickReturn;
+		}
+	    }
+	    ptr = strElt;
+	    while (*ptr != '\0') {
+		if (*ptr == '/' && (ptr[1] == '/' || ptr[1] == '\0')) {
+		    /*
+		     * We have a repeated file separator, which means the path
+		     * is not in normalized form
+		     */
+
+		    goto noQuickReturn;
+		}
+		ptr++;
+	    }
+	    if (res != NULL) {
+		TclDecrRefCount(res);
+	    }
+
+	    /*
+	     * This element is just what we want to return already - no
+	     * further manipulation is requred.
+	     */
+
+	    return elt;
+	}
+
+	/*
+	 * The path element was not of a suitable form to be returned as is.
+	 * We need to perform a more complex operation here.
+	 */
+
+    noQuickReturn:
+	if (res == NULL) {
+	    res = Tcl_NewObj();
+	    ptr = Tcl_GetStringFromObj(res, &length);
+	} else {
+	    ptr = Tcl_GetStringFromObj(res, &length);
+	}
+
+	/*
+	 * Strip off any './' before a tilde, unless this is the beginning of
+	 * the path.
+	 */
+
+	if (length > 0 && strEltLen > 0 && (strElt[0] == '.') &&
+		(strElt[1] == '/') && (strElt[2] == '~')) {
+	    strElt += 2;
+	}
+
+	/*
+	 * A NULL value for fsPtr at this stage basically means we're trying
+	 * to join a relative path onto something which is also relative (or
+	 * empty). There's nothing particularly wrong with that.
+	 */
+
+	if (*strElt == '\0') {
+	    continue;
+	}
+
+	if (fsPtr == &tclNativeFilesystem || fsPtr == NULL) {
+	    TclpNativeJoinPath(res, strElt);
+	} else {
+	    char separator = '/';
+	    int needsSep = 0;
+
+	    if (fsPtr->filesystemSeparatorProc != NULL) {
+		Tcl_Obj *sep = (*fsPtr->filesystemSeparatorProc)(res);
+
+		if (sep != NULL) {
+		    separator = TclGetString(sep)[0];
+		}
+		/* Safety check in case the VFS driver caused sharing */
+		if (Tcl_IsShared(res)) {
+		    TclDecrRefCount(res);
+		    res = Tcl_DuplicateObj(res);
+		    Tcl_IncrRefCount(res);
+		}
+	    }
+
+	    if (length > 0 && ptr[length -1] != '/') {
+		Tcl_AppendToObj(res, &separator, 1);
+		Tcl_GetStringFromObj(res, &length);
+	    }
+	    Tcl_SetObjLength(res, length + (int) strlen(strElt));
+
+	    ptr = TclGetString(res) + length;
+	    for (; *strElt != '\0'; strElt++) {
+		if (*strElt == separator) {
+		    while (strElt[1] == separator) {
+			strElt++;
+		    }
+		    if (strElt[1] != '\0') {
+			if (needsSep) {
+			    *ptr++ = separator;
+			}
+		    }
+		} else {
+		    *ptr++ = *strElt;
+		    needsSep = 1;
+		}
+	    }
+	    length = ptr - TclGetString(res);
+	    Tcl_SetObjLength(res, length);
+	}
+    }
+    if (res == NULL) {
+	res = Tcl_NewObj();
+    }
+    return res;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSConvertToPathType --
+ *
+ *	This function tries to convert the given Tcl_Obj to a valid Tcl path
+ *	type, taking account of the fact that the cwd may have changed even if
+ *	this object is already supposedly of the correct type.
+ *
+ *	The filename may begin with "~" (to indicate current user's home
+ *	directory) or "~<user>" (to indicate any user's home directory).
+ *
+ * Results:
+ *	Standard Tcl error code.
+ *
+ * Side effects:
+ *	The old representation may be freed, and new memory allocated.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+Tcl_FSConvertToPathType(
+    Tcl_Interp *interp,		/* Interpreter in which to store error message
+				 * (if necessary). */
+    Tcl_Obj *pathPtr)		/* Object to convert to a valid, current path
+				 * type. */
+{
+    /*
+     * While it is bad practice to examine an object's type directly, this is
+     * actually the best thing to do here. The reason is that if we are
+     * converting this object to FsPath type for the first time, we don't need
+     * to worry whether the 'cwd' has changed. On the other hand, if this
+     * object is already of FsPath type, and is a relative path, we do have to
+     * worry about the cwd. If the cwd has changed, we must recompute the
+     * path.
+     */
+
+    if (pathPtr->typePtr == &tclFsPathType) {
+	if (TclFSEpochOk(PATHOBJ(pathPtr)->filesystemEpoch)) {
+	    return TCL_OK;
+	}
+
+	if (pathPtr->bytes == NULL) {
+	    UpdateStringOfFsPath(pathPtr);
+	}
+	FreeFsPathInternalRep(pathPtr);
+    }
+
+    return Tcl_ConvertToType(interp, pathPtr, &tclFsPathType);
+
+    /*
+     * We used to have more complex code here:
+     *
+     * FsPath *fsPathPtr = PATHOBJ(pathPtr);
+     * if (fsPathPtr->cwdPtr == NULL || PATHFLAGS(pathPtr) != 0) {
+     *     return TCL_OK;
+     * } else {
+     *     if (TclFSCwdPointerEquals(&fsPathPtr->cwdPtr)) {
+     *         return TCL_OK;
+     *     } else {
+     *         if (pathPtr->bytes == NULL) {
+     *             UpdateStringOfFsPath(pathPtr);
+     *         }
+     *         FreeFsPathInternalRep(pathPtr);
+     *         return Tcl_ConvertToType(interp, pathPtr, &tclFsPathType);
+     *     }
+     * }
+     *
+     * But we no longer believe this is necessary.
+     */
+}
+
+/*
+ * Helper function for normalization.
+ */
+
+static int
+IsSeparatorOrNull(
+    int ch)
+{
+    if (ch == 0) {
+	return 1;
+    }
+    switch (tclPlatform) {
+    case TCL_PLATFORM_UNIX:
+	return (ch == '/' ? 1 : 0);
+    case TCL_PLATFORM_WINDOWS:
+	return ((ch == '/' || ch == '\\') ? 1 : 0);
+    }
+    return 0;
+}
+
+/*
+ * Helper function for SetFsPathFromAny. Returns position of first directory
+ * delimiter in the path. If no separator is found, then returns the position
+ * of the end of the string.
+ */
+
+static int
+FindSplitPos(
+    const char *path,
+    int separator)
+{
+    int count = 0;
+    switch (tclPlatform) {
+    case TCL_PLATFORM_UNIX:
+	while (path[count] != 0) {
+	    if (path[count] == separator) {
+		return count;
+	    }
+	    count++;
+	}
+	break;
+
+    case TCL_PLATFORM_WINDOWS:
+	while (path[count] != 0) {
+	    if (path[count] == separator || path[count] == '\\') {
+		return count;
+	    }
+	    count++;
+	}
+	break;
+    }
+    return count;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclNewFSPathObj --
+ *
+ *	Creates a path object whose string representation is '[file join
+ *	dirPtr addStrRep]', but does so in a way that allows for more
+ *	efficient creation and caching of normalized paths, and more efficient
+ *	'file dirname', 'file tail', etc.
+ *
+ * Assumptions:
+ *	'dirPtr' must be an absolute path. 'len' may not be zero.
+ *
+ * Results:
+ *	The new Tcl object, with refCount zero.
+ *
+ * Side effects:
+ *	Memory is allocated. 'dirPtr' gets an additional refCount.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclNewFSPathObj(
+    Tcl_Obj *dirPtr,
+    const char *addStrRep,
+    int len)
+{
+    FsPath *fsPathPtr;
+    Tcl_Obj *pathPtr;
+    const char *p;
+    int state = 0, count = 0;
+
+    /* [Bug 2806250] - this is only a partial solution of the problem.
+     * The PATHFLAGS != 0 representation assumes in many places that
+     * the "tail" part stored in the normPathPtr field is itself a
+     * relative path.  Strings that begin with "~" are not relative paths,
+     * so we must prevent their storage in the normPathPtr field.
+     *
+     * More generally we ought to be testing "addStrRep" for any value
+     * that is not a relative path, but in an unconstrained VFS world
+     * that could be just about anything, and testing could be expensive.
+     * Since this routine plays a big role in [glob], anything that slows
+     * it down would be unwelcome.  For now, continue the risk of further
+     * bugs when some Tcl_Filesystem uses otherwise relative path strings
+     * as absolute path strings.  Sensible Tcl_Filesystems will avoid
+     * that by mounting on path prefixes like foo:// which cannot be the
+     * name of a file or directory read from a native [glob] operation.
+     */
+    if (addStrRep[0] == '~') {
+	Tcl_Obj *tail = Tcl_NewStringObj(addStrRep, len);
+
+	pathPtr = AppendPath(dirPtr, tail);
+	Tcl_DecrRefCount(tail);
+	return pathPtr;
+    }
+
+    pathPtr = Tcl_NewObj();
+    fsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
+
+    /*
+     * Set up the path.
+     */
+
+    fsPathPtr->translatedPathPtr = NULL;
+    fsPathPtr->normPathPtr = Tcl_NewStringObj(addStrRep, len);
+    Tcl_IncrRefCount(fsPathPtr->normPathPtr);
+    fsPathPtr->cwdPtr = dirPtr;
+    Tcl_IncrRefCount(dirPtr);
+    fsPathPtr->nativePathPtr = NULL;
+    fsPathPtr->fsPtr = NULL;
+    fsPathPtr->filesystemEpoch = 0;
+
+    SETPATHOBJ(pathPtr, fsPathPtr);
+    PATHFLAGS(pathPtr) = TCLPATH_APPENDED;
+    pathPtr->typePtr = &tclFsPathType;
+    pathPtr->bytes = NULL;
+    pathPtr->length = 0;
+
+    /*
+     * Look for path components made up of only "."
+     * This is overly conservative analysis to keep simple.  It may
+     * mark some things as needing more aggressive normalization
+     * that don't actually need it.  No harm done.
+     */
+    for (p = addStrRep; len > 0; p++, len--) {
+       switch (state) {
+       case 0: /* So far only "." since last dirsep or start */
+           switch (*p) {
+           case '.':
+               count++;
+               break;
+           case '/':
+           case '\\':
+           case ':':
+               if (count) {
+                   PATHFLAGS(pathPtr) |= TCLPATH_NEEDNORM;
+                   len = 0;
+               }
+               break;
+           default:
+               count = 0;
+               state = 1;
+           }
+       case 1: /* Scanning for next dirsep */
+           switch (*p) {
+           case '/':
+           case '\\':
+           case ':':
+               state = 0;
+               break;
+           }
+       }
+    }
+    if (len == 0 && count) {
+       PATHFLAGS(pathPtr) |= TCLPATH_NEEDNORM;
+    }
+
+    return pathPtr;
+}
+
+static Tcl_Obj *
+AppendPath(
+    Tcl_Obj *head,
+    Tcl_Obj *tail)
+{
+    int numBytes;
+    const char *bytes;
+    Tcl_Obj *copy = Tcl_DuplicateObj(head);
+
+    /*
+     * This is likely buggy when dealing with virtual filesystem drivers
+     * that use some character other than "/" as a path separator.  I know
+     * of no evidence that such a foolish thing exists.  This solution was
+     * chosen so that "JoinPath" operations that pass through either path
+     * intrep produce the same results; that is, bugward compatibility.  If
+     * we need to fix that bug here, it needs fixing in Tcl_FSJoinPath() too.
+     */
+    bytes = Tcl_GetStringFromObj(tail, &numBytes);
+    if (numBytes == 0) {
+	Tcl_AppendToObj(copy, "/", 1);
+    } else {
+	TclpNativeJoinPath(copy, bytes);
+    }
+    return copy;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclFSMakePathRelative --
+ *
+ *	Only for internal use.
+ *
+ *	Takes a path and a directory, where we _assume_ both path and
+ *	directory are absolute, normalized and that the path lies inside the
+ *	directory. Returns a Tcl_Obj representing filename of the path
+ *	relative to the directory.
+ *
+ * Results:
+ *	NULL on error, otherwise a valid object, typically with refCount of
+ *	zero, which it is assumed the caller will increment.
+ *
+ * Side effects:
+ *	The old representation may be freed, and new memory allocated.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclFSMakePathRelative(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *pathPtr,		/* The path we have. */
+    Tcl_Obj *cwdPtr)		/* Make it relative to this. */
+{
+    int cwdLen, len;
+    const char *tempStr;
+
+    if (pathPtr->typePtr == &tclFsPathType) {
+	FsPath *fsPathPtr = PATHOBJ(pathPtr);
+
+	if (PATHFLAGS(pathPtr) != 0
+		&& fsPathPtr->cwdPtr == cwdPtr) {
+	    pathPtr = fsPathPtr->normPathPtr;
+
+	    /* TODO: Determine how much, if any, of this forcing
+	     * the relative path tail into the "path" Tcl_ObjType
+	     * with a recorded cwdPtr context has any actual value.
+	     *
+	     * Nothing is getting cached.  Not normPathPtr, not nativePathPtr,
+	     * nor fsPtr, so storing the cwdPtr context against which such
+	     * cached values might later be validated appears to be of no
+	     * value.  Take that away, and all this code is just a mildly
+	     * optimized equivalent of a call to SetFsPathFromAny().  That
+	     * optimization may have some value, *if* these value in fact
+	     * get used as "path" values before used as something else.
+	     * If not, though, whatever cost we pay below to convert to
+	     * one of the "path" intreps is just a waste, it seems.  The
+	     * usual convention in the core is to delay ObjType conversion
+	     * until it is needed and demanded, and I don't see why this
+	     * section of code should be an exception to that.  Leaving it
+	     * in place for the rest of the 8.5.* releases just for sake
+	     * of stability.
+	     */
+
+	    /*
+	     * Free old representation.
+	     */
+
+	    if (pathPtr->typePtr != NULL) {
+		if (pathPtr->bytes == NULL) {
+		    if (pathPtr->typePtr->updateStringProc == NULL) {
+			if (interp != NULL) {
+			    Tcl_ResetResult(interp);
+			    Tcl_AppendResult(interp, "can't find object"
+				    "string representation", NULL);
+			}
+			return NULL;
+		    }
+		    pathPtr->typePtr->updateStringProc(pathPtr);
+		}
+		TclFreeIntRep(pathPtr);
+	    }
+
+	    /*
+	     * Now pathPtr is a string object.
+	     */
+
+	    fsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
+
+	    /*
+	     * Circular reference, by design.
+	     */
+
+	    fsPathPtr->translatedPathPtr = pathPtr;
+	    fsPathPtr->normPathPtr = NULL;
+	    fsPathPtr->cwdPtr = cwdPtr;
+	    Tcl_IncrRefCount(cwdPtr);
+	    fsPathPtr->nativePathPtr = NULL;
+	    fsPathPtr->fsPtr = NULL;
+	    fsPathPtr->filesystemEpoch = 0;
+
+	    SETPATHOBJ(pathPtr, fsPathPtr);
+	    PATHFLAGS(pathPtr) = 0;
+	    pathPtr->typePtr = &tclFsPathType;
+
+	    return pathPtr;
+	}
+    }
+
+    /*
+     * We know the cwd is a normalised object which does not end in a
+     * directory delimiter, unless the cwd is the name of a volume, in which
+     * case it will end in a delimiter! We handle this situation here. A
+     * better test than the '!= sep' might be to simply check if 'cwd' is a
+     * root volume.
+     *
+     * Note that if we get this wrong, we will strip off either too much or
+     * too little below, leading to wrong answers returned by glob.
+     */
+
+    tempStr = Tcl_GetStringFromObj(cwdPtr, &cwdLen);
+
+    /*
+     * Should we perhaps use 'Tcl_FSPathSeparator'? But then what about the
+     * Windows special case? Perhaps we should just check if cwd is a root
+     * volume.
+     */
+
+    switch (tclPlatform) {
+    case TCL_PLATFORM_UNIX:
+	if (tempStr[cwdLen-1] != '/') {
+	    cwdLen++;
+	}
+	break;
+    case TCL_PLATFORM_WINDOWS:
+	if (tempStr[cwdLen-1] != '/' && tempStr[cwdLen-1] != '\\') {
+	    cwdLen++;
+	}
+	break;
+    }
+    tempStr = Tcl_GetStringFromObj(pathPtr, &len);
+
+    return Tcl_NewStringObj(tempStr + cwdLen, len - cwdLen);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * MakePathFromNormalized --
+ *
+ *	Like SetFsPathFromAny, but assumes the given object is an absolute
+ *	normalized path. Only for internal use.
+ *
+ * Results:
+ *	Standard Tcl error code.
+ *
+ * Side effects:
+ *	The old representation may be freed, and new memory allocated.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+MakePathFromNormalized(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *pathPtr)		/* The object to convert. */
+{
+    FsPath *fsPathPtr;
+
+    if (pathPtr->typePtr == &tclFsPathType) {
+	return TCL_OK;
+    }
+
+    /*
+     * Free old representation
+     */
+
+    if (pathPtr->typePtr != NULL) {
+	if (pathPtr->bytes == NULL) {
+	    if (pathPtr->typePtr->updateStringProc == NULL) {
+		if (interp != NULL) {
+		    Tcl_ResetResult(interp);
+		    Tcl_AppendResult(interp, "can't find object"
+			    "string representation", NULL);
+		}
+		return TCL_ERROR;
+	    }
+	    pathPtr->typePtr->updateStringProc(pathPtr);
+	}
+	TclFreeIntRep(pathPtr);
+    }
+
+    fsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
+
+    /*
+     * It's a pure normalized absolute path.
+     */
+
+    fsPathPtr->translatedPathPtr = NULL;
+
+    /*
+     * Circular reference by design.
+     */
+
+    fsPathPtr->normPathPtr = pathPtr;
+    fsPathPtr->cwdPtr = NULL;
+    fsPathPtr->nativePathPtr = NULL;
+    fsPathPtr->fsPtr = NULL;
+    /* Remember the epoch under which we decided pathPtr was normalized */
+    fsPathPtr->filesystemEpoch = TclFSEpoch();
+
+    SETPATHOBJ(pathPtr, fsPathPtr);
+    PATHFLAGS(pathPtr) = 0;
+    pathPtr->typePtr = &tclFsPathType;
+
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSNewNativePath --
+ *
+ *	This function performs the something like the reverse of the usual
+ *	obj->path->nativerep conversions. If some code retrieves a path in
+ *	native form (from, e.g. readlink or a native dialog), and that path is
+ *	to be used at the Tcl level, then calling this function is an
+ *	efficient way of creating the appropriate path object type.
+ *
+ *	Any memory which is allocated for 'clientData' should be retained
+ *	until clientData is passed to the filesystem's freeInternalRepProc
+ *	when it can be freed. The built in platform-specific filesystems use
+ *	'ckalloc' to allocate clientData, and ckfree to free it.
+ *
+ * Results:
+ *	NULL or a valid path object pointer, with refCount zero.
+ *
+ * Side effects:
+ *	New memory may be allocated.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_FSNewNativePath(
+    Tcl_Filesystem *fromFilesystem,
+    ClientData clientData)
+{
+    Tcl_Obj *pathPtr = NULL;
+    FsPath *fsPathPtr;
+
+
+    if (fromFilesystem->internalToNormalizedProc != NULL) {
+	pathPtr = (*fromFilesystem->internalToNormalizedProc)(clientData);
+    }
+    if (pathPtr == NULL) {
+	return NULL;
+    }
+
+    /*
+     * Free old representation; shouldn't normally be any, but best to be
+     * safe.
+     */
+
+    if (pathPtr->typePtr != NULL) {
+	if (pathPtr->bytes == NULL) {
+	    if (pathPtr->typePtr->updateStringProc == NULL) {
+		return NULL;
+	    }
+	    pathPtr->typePtr->updateStringProc(pathPtr);
+	}
+	TclFreeIntRep(pathPtr);
+    }
+
+    fsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
+
+    fsPathPtr->translatedPathPtr = NULL;
+
+    /*
+     * Circular reference, by design.
+     */
+
+    fsPathPtr->normPathPtr = pathPtr;
+    fsPathPtr->cwdPtr = NULL;
+    fsPathPtr->nativePathPtr = clientData;
+    fsPathPtr->fsPtr = fromFilesystem;
+    fsPathPtr->filesystemEpoch = TclFSEpoch();
+
+    SETPATHOBJ(pathPtr, fsPathPtr);
+    PATHFLAGS(pathPtr) = 0;
+    pathPtr->typePtr = &tclFsPathType;
+
+    return pathPtr;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSGetTranslatedPath --
+ *
+ *	This function attempts to extract the translated path from the given
+ *	Tcl_Obj. If the translation succeeds (i.e. the object is a valid
+ *	path), then it is returned. Otherwise NULL will be returned, and an
+ *	error message may be left in the interpreter (if it is non-NULL)
+ *
+ * Results:
+ *	NULL or a valid Tcl_Obj pointer.
+ *
+ * Side effects:
+ *	Only those of 'Tcl_FSConvertToPathType'
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_FSGetTranslatedPath(
+    Tcl_Interp *interp,
+    Tcl_Obj *pathPtr)
+{
+    Tcl_Obj *retObj = NULL;
+    FsPath *srcFsPathPtr;
+
+    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
+	return NULL;
+    }
+    srcFsPathPtr = PATHOBJ(pathPtr);
+    if (srcFsPathPtr->translatedPathPtr == NULL) {
+	if (PATHFLAGS(pathPtr) != 0) {
+	    /*
+	     * We lack a translated path result, but we have a directory
+	     * (cwdPtr) and a tail (normPathPtr), and if we join the
+	     * translated version of cwdPtr to normPathPtr, we'll get the
+	     * translated result we need, and can store it for future use.
+	     */
+
+	    Tcl_Obj *translatedCwdPtr = Tcl_FSGetTranslatedPath(interp,
+		    srcFsPathPtr->cwdPtr);
+	    if (translatedCwdPtr == NULL) {
+		return NULL;
+	    }
+
+	    retObj = Tcl_FSJoinToPath(translatedCwdPtr, 1,
+		    &(srcFsPathPtr->normPathPtr));
+	    srcFsPathPtr->translatedPathPtr = retObj;
+	    if (translatedCwdPtr->typePtr == &tclFsPathType) {
+		srcFsPathPtr->filesystemEpoch
+			= PATHOBJ(translatedCwdPtr)->filesystemEpoch;
+	    } else {
+		srcFsPathPtr->filesystemEpoch = 0;
+	    }
+	    Tcl_IncrRefCount(retObj);
+	    Tcl_DecrRefCount(translatedCwdPtr);
+	} else {
+	    /*
+	     * It is a pure absolute, normalized path object. This is
+	     * something like being a 'pure list'. The object's string,
+	     * translatedPath and normalizedPath are all identical.
+	     */
+
+	    retObj = srcFsPathPtr->normPathPtr;
+	}
+    } else {
+	/*
+	 * It is an ordinary path object.
+	 */
+
+	retObj = srcFsPathPtr->translatedPathPtr;
+    }
+
+    if (retObj != NULL) {
+	Tcl_IncrRefCount(retObj);
+    }
+    return retObj;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSGetTranslatedStringPath --
+ *
+ *	This function attempts to extract the translated path from the given
+ *	Tcl_Obj. If the translation succeeds (i.e. the object is a valid
+ *	path), then the path is returned. Otherwise NULL will be returned, and
+ *	an error message may be left in the interpreter (if it is non-NULL)
+ *
+ * Results:
+ *	NULL or a valid string.
+ *
+ * Side effects:
+ *	Only those of 'Tcl_FSConvertToPathType'
+ *
+ *---------------------------------------------------------------------------
+ */
+
+const char *
+Tcl_FSGetTranslatedStringPath(
+    Tcl_Interp *interp,
+    Tcl_Obj *pathPtr)
+{
+    Tcl_Obj *transPtr = Tcl_FSGetTranslatedPath(interp, pathPtr);
+
+    if (transPtr != NULL) {
+	int len;
+	const char *orig = Tcl_GetStringFromObj(transPtr, &len);
+	char *result = (char *) ckalloc((unsigned) len+1);
+
+	memcpy(result, orig, (size_t) len+1);
+	TclDecrRefCount(transPtr);
+	return result;
+    }
+
+    return NULL;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSGetNormalizedPath --
+ *
+ *	This important function attempts to extract from the given Tcl_Obj a
+ *	unique normalised path representation, whose string value can be used
+ *	as a unique identifier for the file.
+ *
+ * Results:
+ *	NULL or a valid path object pointer.
+ *
+ * Side effects:
+ *	New memory may be allocated. The Tcl 'errno' may be modified in the
+ *	process of trying to examine various path possibilities.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_FSGetNormalizedPath(
+    Tcl_Interp *interp,
+    Tcl_Obj *pathPtr)
+{
+    FsPath *fsPathPtr;
+
+    if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
+	return NULL;
+    }
+    fsPathPtr = PATHOBJ(pathPtr);
+
+    if (PATHFLAGS(pathPtr) != 0) {
+	/*
+	 * This is a special path object which is the result of something like
+	 * 'file join'
+	 */
+
+	Tcl_Obj *dir, *copy;
+	int tailLen, cwdLen, pathType;
+
+	pathType = Tcl_FSGetPathType(fsPathPtr->cwdPtr);
+	dir = Tcl_FSGetNormalizedPath(interp, fsPathPtr->cwdPtr);
+	if (dir == NULL) {
+	    return NULL;
+	}
+	/* TODO: Figure out why this is needed. */
+	if (pathPtr->bytes == NULL) {
+	    UpdateStringOfFsPath(pathPtr);
+	}
+
+	Tcl_GetStringFromObj(fsPathPtr->normPathPtr, &tailLen);
+	if (tailLen) {
+	    copy = AppendPath(dir, fsPathPtr->normPathPtr);
+	} else {
+	    copy = Tcl_DuplicateObj(dir);
+	}
+	Tcl_IncrRefCount(dir);
+	Tcl_IncrRefCount(copy);
+
+	/*
+	 * We now own a reference on both 'dir' and 'copy'
+	 */
+
+	(void) Tcl_GetStringFromObj(dir, &cwdLen);
+	cwdLen += (Tcl_GetString(copy)[cwdLen] == '/');
+
+	/* Normalize the combined string. */
+
+	if (PATHFLAGS(pathPtr) & TCLPATH_NEEDNORM) {
+	    /*
+	     * If the "tail" part has components (like /../) that cause
+	     * the combined path to need more complete normalizing,
+	     * call on the more powerful routine to accomplish that so
+	     * we avoid [Bug 2385549] ...
+	     */
+
+	    Tcl_Obj *newCopy = TclFSNormalizeAbsolutePath(interp, copy);
+	    Tcl_DecrRefCount(copy);
+	    copy = newCopy;
+	} else {
+	    /*
+	     * ... but in most cases where we join a trouble free tail
+	     * to a normalized head, we can more efficiently normalize the
+	     * combined path by passing over only the unnormalized tail
+	     * portion.  When this is sufficient, prior developers claim
+	     * this should be much faster.  We use 'cwdLen-1' so that we are
+	     * already pointing at the dir-separator that we know about.
+	     * The normalization code will actually start off directly
+	     * after that separator.
+	     */
+
+	    TclFSNormalizeToUniquePath(interp, copy, cwdLen-1);
+	}
+
+	/* Now we need to construct the new path object. */
+
+	if (pathType == TCL_PATH_RELATIVE) {
+	    Tcl_Obj *origDir = fsPathPtr->cwdPtr;
+
+	    /*
+	     * NOTE: here we are (dangerously?) assuming that origDir points
+	     * to a Tcl_Obj with Tcl_ObjType == &tclFsPathType .  The
+	     *     pathType = Tcl_FSGetPathType(fsPathPtr->cwdPtr);
+	     * above that set the pathType value should have established
+	     * that, but it's far less clear on what basis we know there's
+	     * been no shimmering since then.
+	     */
+
+	    FsPath *origDirFsPathPtr = PATHOBJ(origDir);
+
+	    fsPathPtr->cwdPtr = origDirFsPathPtr->cwdPtr;
+	    Tcl_IncrRefCount(fsPathPtr->cwdPtr);
+
+	    TclDecrRefCount(fsPathPtr->normPathPtr);
+	    fsPathPtr->normPathPtr = copy;
+
+	    /*
+	     * That's our reference to copy used.
+	     */
+
+	    TclDecrRefCount(dir);
+	    TclDecrRefCount(origDir);
+	} else {
+	    TclDecrRefCount(fsPathPtr->cwdPtr);
+	    fsPathPtr->cwdPtr = NULL;
+	    TclDecrRefCount(fsPathPtr->normPathPtr);
+	    fsPathPtr->normPathPtr = copy;
+
+	    /*
+	     * That's our reference to copy used.
+	     */
+
+	    TclDecrRefCount(dir);
+	}
+	PATHFLAGS(pathPtr) = 0;
+    }
+
+    /*
+     * Ensure cwd hasn't changed.
+     */
+
+    if (fsPathPtr->cwdPtr != NULL) {
+	if (!TclFSCwdPointerEquals(&fsPathPtr->cwdPtr)) {
+	    if (pathPtr->bytes == NULL) {
+		UpdateStringOfFsPath(pathPtr);
+	    }
+	    FreeFsPathInternalRep(pathPtr);
+	    if (Tcl_ConvertToType(interp, pathPtr, &tclFsPathType) != TCL_OK) {
+		return NULL;
+	    }
+	    fsPathPtr = PATHOBJ(pathPtr);
+	} else if (fsPathPtr->normPathPtr == NULL) {
+	    int cwdLen;
+	    Tcl_Obj *copy;
+
+	    copy = AppendPath(fsPathPtr->cwdPtr, pathPtr);
+
+	    (void) Tcl_GetStringFromObj(fsPathPtr->cwdPtr, &cwdLen);
+	    cwdLen += (Tcl_GetString(copy)[cwdLen] == '/');
+
+	    /*
+	     * Normalize the combined string, but only starting after the end
+	     * of the previously normalized 'dir'. This should be much faster!
+	     */
+
+	    TclFSNormalizeToUniquePath(interp, copy, cwdLen-1);
+	    fsPathPtr->normPathPtr = copy;
+	    Tcl_IncrRefCount(fsPathPtr->normPathPtr);
+	}
+    }
+    if (fsPathPtr->normPathPtr == NULL) {
+	Tcl_Obj *useThisCwd = NULL;
+	int pureNormalized = 1;
+
+	/*
+	 * Since normPathPtr is NULL, but this is a valid path object, we know
+	 * that the translatedPathPtr cannot be NULL.
+	 */
+
+	Tcl_Obj *absolutePath = fsPathPtr->translatedPathPtr;
+	const char *path = TclGetString(absolutePath);
+
+	Tcl_IncrRefCount(absolutePath);
+
+	/*
+	 * We have to be a little bit careful here to avoid infinite loops
+	 * we're asking Tcl_FSGetPathType to return the path's type, but that
+	 * call can actually result in a lot of other filesystem action, which
+	 * might loop back through here.
+	 */
+
+	if (path[0] == '\0') {
+	    /*
+	     * Special handling for the empty string value.  This one is
+	     * very weird with [file normalize {}] => {}.  (The reasoning
+	     * supporting this is unknown to DGP, but he fears changing it.)
+	     * Attempt here to keep the expectations of other parts of
+	     * Tcl_Filesystem code about state of the FsPath fields satisfied.
+	     *
+	     * In particular, capture the cwd value and save so it can be
+	     * stored in the cwdPtr field below.
+	     */
+
+	    useThisCwd = Tcl_FSGetCwd(interp);
+	} else {
+	    /*
+	     * We don't ask for the type of 'pathPtr' here, because that is
+	     * not correct for our purposes when we have a path like '~'. Tcl
+	     * has a bit of a contradiction in that '~' paths are defined as
+	     * 'absolute', but in reality can be just about anything,
+	     * depending on how env(HOME) is set.
+	     */
+
+	    Tcl_PathType type = Tcl_FSGetPathType(absolutePath);
+
+	    if (type == TCL_PATH_RELATIVE) {
+		useThisCwd = Tcl_FSGetCwd(interp);
+
+		if (useThisCwd == NULL) {
+		    return NULL;
+		}
+
+		pureNormalized = 0;
+		Tcl_DecrRefCount(absolutePath);
+		absolutePath = Tcl_FSJoinToPath(useThisCwd, 1, &absolutePath);
+		Tcl_IncrRefCount(absolutePath);
+
+		/*
+		 * We have a refCount on the cwd.
+		 */
+#ifdef __WIN32__
+	    } else if (type == TCL_PATH_VOLUME_RELATIVE) {
+		/*
+		 * Only Windows has volume-relative paths.
+		 */
+
+		Tcl_DecrRefCount(absolutePath);
+		absolutePath = TclWinVolumeRelativeNormalize(interp,
+			path, &useThisCwd);
+		if (absolutePath == NULL) {
+		    return NULL;
+		}
+		pureNormalized = 0;
+#endif /* __WIN32__ */
+	    }
+	}
+
+	/*
+	 * Already has refCount incremented.
+	 */
+
+	fsPathPtr->normPathPtr = TclFSNormalizeAbsolutePath(interp,
+		absolutePath);
+
+	/*
+	 * Check if path is pure normalized (this can only be the case if it
+	 * is an absolute path).
+	 */
+
+	if (pureNormalized) {
+	    if (!strcmp(TclGetString(fsPathPtr->normPathPtr),
+		    TclGetString(pathPtr))) {
+		/*
+		 * The path was already normalized. Get rid of the duplicate.
+		 */
+
+		TclDecrRefCount(fsPathPtr->normPathPtr);
+
+		/*
+		 * We do *not* increment the refCount for this circular
+		 * reference.
+		 */
+
+		fsPathPtr->normPathPtr = pathPtr;
+	    }
+	}
+	if (useThisCwd != NULL) {
+	    /*
+	     * We just need to free an object we allocated above for relative
+	     * paths (this was returned by Tcl_FSJoinToPath above), and then
+	     * of course store the cwd.
+	     */
+
+	    fsPathPtr->cwdPtr = useThisCwd;
+	}
+	TclDecrRefCount(absolutePath);
+    }
+
+    return fsPathPtr->normPathPtr;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSGetInternalRep --
+ *
+ *	Extract the internal representation of a given path object, in the
+ *	given filesystem. If the path object belongs to a different
+ *	filesystem, we return NULL.
+ *
+ *	If the internal representation is currently NULL, we attempt to
+ *	generate it, by calling the filesystem's
+ *	'Tcl_FSCreateInternalRepProc'.
+ *
+ * Results:
+ *	NULL or a valid internal representation.
+ *
+ * Side effects:
+ *	An attempt may be made to convert the object.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+ClientData
+Tcl_FSGetInternalRep(
+    Tcl_Obj *pathPtr,
+    Tcl_Filesystem *fsPtr)
+{
+    FsPath *srcFsPathPtr;
+
+    if (Tcl_FSConvertToPathType(NULL, pathPtr) != TCL_OK) {
+	return NULL;
+    }
+    srcFsPathPtr = PATHOBJ(pathPtr);
+
+    /*
+     * We will only return the native representation for the caller's
+     * filesystem. Otherwise we will simply return NULL. This means that there
+     * must be a unique bi-directional mapping between paths and filesystems,
+     * and that this mapping will not allow 'remapped' files -- files which
+     * are in one filesystem but mapped into another. Another way of putting
+     * this is that 'stacked' filesystems are not allowed. We recognise that
+     * this is a potentially useful feature for the future.
+     *
+     * Even something simple like a 'pass through' filesystem which logs all
+     * activity and passes the calls onto the native system would be nice, but
+     * not easily achievable with the current implementation.
+     */
+
+    if (srcFsPathPtr->fsPtr == NULL) {
+	/*
+	 * This only usually happens in wrappers like TclpStat which create a
+	 * string object and pass it to TclpObjStat. Code which calls the
+	 * Tcl_FS.. functions should always have a filesystem already set.
+	 * Whether this code path is legal or not depends on whether we decide
+	 * to allow external code to call the native filesystem directly. It
+	 * is at least safer to allow this sub-optimal routing.
+	 */
+
+	Tcl_FSGetFileSystemForPath(pathPtr);
+
+	/*
+	 * If we fail through here, then the path is probably not a valid path
+	 * in the filesystsem, and is most likely to be a use of the empty
+	 * path "" via a direct call to one of the objectified interfaces
+	 * (e.g. from the Tcl testsuite).
+	 */
+
+	srcFsPathPtr = PATHOBJ(pathPtr);
+	if (srcFsPathPtr->fsPtr == NULL) {
+	    return NULL;
+	}
+    }
+
+    /*
+     * There is still one possibility we should consider; if the file belongs
+     * to a different filesystem, perhaps it is actually linked through to a
+     * file in our own filesystem which we do care about. The way we can check
+     * for this is we ask what filesystem this path belongs to.
+     */
+
+    if (fsPtr != srcFsPathPtr->fsPtr) {
+	const Tcl_Filesystem *actualFs = Tcl_FSGetFileSystemForPath(pathPtr);
+
+	if (actualFs == fsPtr) {
+	    return Tcl_FSGetInternalRep(pathPtr, fsPtr);
+	}
+	return NULL;
+    }
+
+    if (srcFsPathPtr->nativePathPtr == NULL) {
+	Tcl_FSCreateInternalRepProc *proc;
+	char *nativePathPtr;
+
+	proc = srcFsPathPtr->fsPtr->createInternalRepProc;
+	if (proc == NULL) {
+	    return NULL;
+	}
+
+	nativePathPtr = (*proc)(pathPtr);
+	srcFsPathPtr = PATHOBJ(pathPtr);
+	srcFsPathPtr->nativePathPtr = nativePathPtr;
+    }
+
+    return srcFsPathPtr->nativePathPtr;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclFSEnsureEpochOk --
+ *
+ *	This will ensure the pathPtr is up to date and can be converted into a
+ *	"path" type, and that we are able to generate a complete normalized
+ *	path which is used to determine the filesystem match.
+ *
+ * Results:
+ *	Standard Tcl return code.
+ *
+ * Side effects:
+ *	An attempt may be made to convert the object.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclFSEnsureEpochOk(
+    Tcl_Obj *pathPtr,
+    Tcl_Filesystem **fsPtrPtr)
+{
+    FsPath *srcFsPathPtr;
+
+    if (pathPtr->typePtr != &tclFsPathType) {
+	return TCL_OK;
+    }
+
+    srcFsPathPtr = PATHOBJ(pathPtr);
+
+    /*
+     * Check if the filesystem has changed in some way since this object's
+     * internal representation was calculated.
+     */
+
+    if (!TclFSEpochOk(srcFsPathPtr->filesystemEpoch)) {
+	/*
+	 * We have to discard the stale representation and recalculate it.
+	 */
+
+	if (pathPtr->bytes == NULL) {
+	    UpdateStringOfFsPath(pathPtr);
+	}
+	FreeFsPathInternalRep(pathPtr);
+	if (SetFsPathFromAny(NULL, pathPtr) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	srcFsPathPtr = PATHOBJ(pathPtr);
+    }
+
+    /*
+     * Check whether the object is already assigned to a fs.
+     */
+
+    if (srcFsPathPtr->fsPtr != NULL) {
+	*fsPtrPtr = srcFsPathPtr->fsPtr;
+    }
+    return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclFSSetPathDetails --
+ *
+ *	???
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	???
+ *
+ *---------------------------------------------------------------------------
+ */
+
+void
+TclFSSetPathDetails(
+    Tcl_Obj *pathPtr,
+    Tcl_Filesystem *fsPtr,
+    ClientData clientData)
+{
+    FsPath *srcFsPathPtr;
+
+    /*
+     * Make sure pathPtr is of the correct type.
+     */
+
+    if (pathPtr->typePtr != &tclFsPathType) {
+	if (SetFsPathFromAny(NULL, pathPtr) != TCL_OK) {
+	    return;
+	}
+    }
+
+    srcFsPathPtr = PATHOBJ(pathPtr);
+    srcFsPathPtr->fsPtr = fsPtr;
+    srcFsPathPtr->nativePathPtr = clientData;
+    srcFsPathPtr->filesystemEpoch = TclFSEpoch();
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_FSEqualPaths --
+ *
+ *	This function tests whether the two paths given are equal path
+ *	objects. If either or both is NULL, 0 is always returned.
+ *
+ * Results:
+ *	1 or 0.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+Tcl_FSEqualPaths(
+    Tcl_Obj *firstPtr,
+    Tcl_Obj *secondPtr)
+{
+    char *firstStr, *secondStr;
+    int firstLen, secondLen, tempErrno;
+
+    if (firstPtr == secondPtr) {
+	return 1;
+    }
+
+    if (firstPtr == NULL || secondPtr == NULL) {
+	return 0;
+    }
+    firstStr = Tcl_GetStringFromObj(firstPtr, &firstLen);
+    secondStr = Tcl_GetStringFromObj(secondPtr, &secondLen);
+    if ((firstLen == secondLen) && (strcmp(firstStr, secondStr) == 0)) {
+	return 1;
+    }
+
+    /*
+     * Try the most thorough, correct method of comparing fully normalized
+     * paths.
+     */
+
+    tempErrno = Tcl_GetErrno();
+    firstPtr = Tcl_FSGetNormalizedPath(NULL, firstPtr);
+    secondPtr = Tcl_FSGetNormalizedPath(NULL, secondPtr);
+    Tcl_SetErrno(tempErrno);
+
+    if (firstPtr == NULL || secondPtr == NULL) {
+	return 0;
+    }
+
+    firstStr = Tcl_GetStringFromObj(firstPtr, &firstLen);
+    secondStr = Tcl_GetStringFromObj(secondPtr, &secondLen);
+    return (firstLen == secondLen) && (strcmp(firstStr, secondStr) == 0);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * SetFsPathFromAny --
+ *
+ *	This function tries to convert the given Tcl_Obj to a valid Tcl path
+ *	type.
+ *
+ *	The filename may begin with "~" (to indicate current user's home
+ *	directory) or "~<user>" (to indicate any user's home directory).
+ *
+ * Results:
+ *	Standard Tcl error code.
+ *
+ * Side effects:
+ *	The old representation may be freed, and new memory allocated.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static int
+SetFsPathFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *pathPtr)		/* The object to convert. */
+{
+    int len;
+    FsPath *fsPathPtr;
+    Tcl_Obj *transPtr;
+    char *name;
+
+    if (pathPtr->typePtr == &tclFsPathType) {
+	return TCL_OK;
+    }
+
+    /*
+     * First step is to translate the filename. This is similar to
+     * Tcl_TranslateFilename, but shouldn't convert everything to windows
+     * backslashes on that platform. The current implementation of this piece
+     * is a slightly optimised version of the various Tilde/Split/Join stuff
+     * to avoid multiple split/join operations.
+     *
+     * We remove any trailing directory separator.
+     *
+     * However, the split/join routines are quite complex, and one has to make
+     * sure not to break anything on Unix or Win (fCmd.test, fileName.test and
+     * cmdAH.test exercise most of the code).
+     */
+
+    name = Tcl_GetStringFromObj(pathPtr, &len);
+
+    /*
+     * Handle tilde substitutions, if needed.
+     */
+
+    if (name[0] == '~') {
+	char *expandedUser;
+	Tcl_DString temp;
+	int split;
+	char separator = '/';
+
+	split = FindSplitPos(name, separator);
+	if (split != len) {
+	    /*
+	     * We have multiple pieces '~user/foo/bar...'
+	     */
+
+	    name[split] = '\0';
+	}
+
+	/*
+	 * Do some tilde substitution.
+	 */
+
+	if (name[1] == '\0') {
+	    /*
+	     * We have just '~'
+	     */
+
+	    const char *dir;
+	    Tcl_DString dirString;
+
+	    if (split != len) {
+		name[split] = separator;
+	    }
+
+	    dir = TclGetEnv("HOME", &dirString);
+	    if (dir == NULL) {
+		if (interp) {
+		    Tcl_ResetResult(interp);
+		    Tcl_AppendResult(interp, "couldn't find HOME environment "
+			    "variable to expand path", NULL);
+		}
+		return TCL_ERROR;
+	    }
+	    Tcl_DStringInit(&temp);
+	    Tcl_JoinPath(1, &dir, &temp);
+	    Tcl_DStringFree(&dirString);
+	} else {
+	    /*
+	     * We have a user name '~user'
+	     */
+
+	    Tcl_DStringInit(&temp);
+	    if (TclpGetUserHome(name+1, &temp) == NULL) {
+		if (interp != NULL) {
+		    Tcl_ResetResult(interp);
+		    Tcl_AppendResult(interp, "user \"", name+1,
+			    "\" doesn't exist", NULL);
+		}
+		Tcl_DStringFree(&temp);
+		if (split != len) {
+		    name[split] = separator;
+		}
+		return TCL_ERROR;
+	    }
+	    if (split != len) {
+		name[split] = separator;
+	    }
+	}
+
+	expandedUser = Tcl_DStringValue(&temp);
+	transPtr = Tcl_NewStringObj(expandedUser, Tcl_DStringLength(&temp));
+
+	if (split != len) {
+	    /*
+	     * Join up the tilde substitution with the rest.
+	     */
+
+	    if (name[split+1] == separator) {
+		/*
+		 * Somewhat tricky case like ~//foo/bar. Make use of
+		 * Split/Join machinery to get it right. Assumes all paths
+		 * beginning with ~ are part of the native filesystem.
+		 */
+
+		int objc;
+		Tcl_Obj **objv;
+		Tcl_Obj *parts = TclpNativeSplitPath(pathPtr, NULL);
+
+		Tcl_ListObjGetElements(NULL, parts, &objc, &objv);
+
+		/*
+		 * Skip '~'. It's replaced by its expansion.
+		 */
+
+		objc--; objv++;
+		while (objc--) {
+		    TclpNativeJoinPath(transPtr, Tcl_GetString(*objv++));
+		}
+		TclDecrRefCount(parts);
+	    } else {
+		/*
+		 * Simple case. "rest" is relative path. Just join it. The
+		 * "rest" object will be freed when Tcl_FSJoinToPath returns
+		 * (unless something else claims a refCount on it).
+		 */
+
+		Tcl_Obj *joined;
+		Tcl_Obj *rest = Tcl_NewStringObj(name+split+1, -1);
+
+		Tcl_IncrRefCount(transPtr);
+		joined = Tcl_FSJoinToPath(transPtr, 1, &rest);
+		TclDecrRefCount(transPtr);
+		transPtr = joined;
+	    }
+	}
+	Tcl_DStringFree(&temp);
+    } else {
+	/* Bug 3479689: protect 0-refcount pathPth from getting freed */
+	pathPtr->refCount++;
+	transPtr = Tcl_FSJoinToPath(pathPtr, 0, NULL);
+	pathPtr->refCount--;
+    }
+
+    /*
+     * Now we have a translated filename in 'transPtr'. This will have forward
+     * slashes on Windows, and will not contain any ~user sequences.
+     */
+
+    fsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
+
+    fsPathPtr->translatedPathPtr = transPtr;
+    if (transPtr != pathPtr) {
+	Tcl_IncrRefCount(fsPathPtr->translatedPathPtr);
+	/* Redo translation when $env(HOME) changes */
+	fsPathPtr->filesystemEpoch = TclFSEpoch();
+    } else {
+	fsPathPtr->filesystemEpoch = 0;
+    }
+    fsPathPtr->normPathPtr = NULL;
+    fsPathPtr->cwdPtr = NULL;
+    fsPathPtr->nativePathPtr = NULL;
+    fsPathPtr->fsPtr = NULL;
+
+    /*
+     * Free old representation before installing our new one.
+     */
+
+    TclFreeIntRep(pathPtr);
+    SETPATHOBJ(pathPtr, fsPathPtr);
+    PATHFLAGS(pathPtr) = 0;
+    pathPtr->typePtr = &tclFsPathType;
+    return TCL_OK;
+}
+
+static void
+FreeFsPathInternalRep(
+    Tcl_Obj *pathPtr)		/* Path object with internal rep to free. */
+{
+    FsPath *fsPathPtr = PATHOBJ(pathPtr);
+
+    if (fsPathPtr->translatedPathPtr != NULL) {
+	if (fsPathPtr->translatedPathPtr != pathPtr) {
+	    TclDecrRefCount(fsPathPtr->translatedPathPtr);
+	}
+    }
+    if (fsPathPtr->normPathPtr != NULL) {
+	if (fsPathPtr->normPathPtr != pathPtr) {
+	    TclDecrRefCount(fsPathPtr->normPathPtr);
+	}
+	fsPathPtr->normPathPtr = NULL;
+    }
+    if (fsPathPtr->cwdPtr != NULL) {
+	TclDecrRefCount(fsPathPtr->cwdPtr);
+    }
+    if (fsPathPtr->nativePathPtr != NULL && fsPathPtr->fsPtr != NULL) {
+	Tcl_FSFreeInternalRepProc *freeProc =
+		fsPathPtr->fsPtr->freeInternalRepProc;
+
+	if (freeProc != NULL) {
+	    (*freeProc)(fsPathPtr->nativePathPtr);
+	    fsPathPtr->nativePathPtr = NULL;
+	}
+    }
+
+    ckfree((char *) fsPathPtr);
+    pathPtr->typePtr = NULL;
+}
+
+static void
+DupFsPathInternalRep(
+    Tcl_Obj *srcPtr,		/* Path obj with internal rep to copy. */
+    Tcl_Obj *copyPtr)		/* Path obj with internal rep to set. */
+{
+    FsPath *srcFsPathPtr = PATHOBJ(srcPtr);
+    FsPath *copyFsPathPtr = (FsPath *) ckalloc(sizeof(FsPath));
+
+    SETPATHOBJ(copyPtr, copyFsPathPtr);
+
+    if (srcFsPathPtr->translatedPathPtr == srcPtr) {
+	/* Cycle in src -> make cycle in copy. */
+	copyFsPathPtr->translatedPathPtr = copyPtr;
+    } else {
+	copyFsPathPtr->translatedPathPtr = srcFsPathPtr->translatedPathPtr;
+	if (copyFsPathPtr->translatedPathPtr != NULL) {
+	    Tcl_IncrRefCount(copyFsPathPtr->translatedPathPtr);
+	}
+    }
+
+    if (srcFsPathPtr->normPathPtr == srcPtr) {
+	/* Cycle in src -> make cycle in copy. */
+	copyFsPathPtr->normPathPtr = copyPtr;
+    } else {
+	copyFsPathPtr->normPathPtr = srcFsPathPtr->normPathPtr;
+	if (copyFsPathPtr->normPathPtr != NULL) {
+	    Tcl_IncrRefCount(copyFsPathPtr->normPathPtr);
+	}
+    }
+
+    copyFsPathPtr->cwdPtr = srcFsPathPtr->cwdPtr;
+    if (copyFsPathPtr->cwdPtr != NULL) {
+	Tcl_IncrRefCount(copyFsPathPtr->cwdPtr);
+    }
+
+    copyFsPathPtr->flags = srcFsPathPtr->flags;
+
+    if (srcFsPathPtr->fsPtr != NULL
+	    && srcFsPathPtr->nativePathPtr != NULL) {
+	Tcl_FSDupInternalRepProc *dupProc =
+		srcFsPathPtr->fsPtr->dupInternalRepProc;
+
+	if (dupProc != NULL) {
+	    copyFsPathPtr->nativePathPtr =
+		    (*dupProc)(srcFsPathPtr->nativePathPtr);
+	} else {
+	    copyFsPathPtr->nativePathPtr = NULL;
+	}
+    } else {
+	copyFsPathPtr->nativePathPtr = NULL;
+    }
+    copyFsPathPtr->fsPtr = srcFsPathPtr->fsPtr;
+    copyFsPathPtr->filesystemEpoch = srcFsPathPtr->filesystemEpoch;
+
+    copyPtr->typePtr = &tclFsPathType;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * UpdateStringOfFsPath --
+ *
+ *	Gives an object a valid string rep.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Memory may be allocated.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+UpdateStringOfFsPath(
+    register Tcl_Obj *pathPtr)	/* path obj with string rep to update. */
+{
+    FsPath *fsPathPtr = PATHOBJ(pathPtr);
+    int cwdLen;
+    Tcl_Obj *copy;
+
+    if (PATHFLAGS(pathPtr) == 0 || fsPathPtr->cwdPtr == NULL) {
+	Tcl_Panic("Called UpdateStringOfFsPath with invalid object");
+    }
+
+    copy = AppendPath(fsPathPtr->cwdPtr, fsPathPtr->normPathPtr);
+
+    pathPtr->bytes = Tcl_GetStringFromObj(copy, &cwdLen);
+    pathPtr->length = cwdLen;
+    copy->bytes = tclEmptyStringRep;
+    copy->length = 0;
+    TclDecrRefCount(copy);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclNativePathInFilesystem --
+ *
+ *	Any path object is acceptable to the native filesystem, by default (we
+ *	will throw errors when illegal paths are actually tried to be used).
+ *
+ *	However, this behavior means the native filesystem must be the last
+ *	filesystem in the lookup list (otherwise it will claim all files
+ *	belong to it, and other filesystems will never get a look in).
+ *
+ * Results:
+ *	TCL_OK, to indicate 'yes', -1 to indicate no.
+ *
+ * Side effects:
+ *	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclNativePathInFilesystem(
+    Tcl_Obj *pathPtr,
+    ClientData *clientDataPtr)
+{
+    /*
+     * A special case is required to handle the empty path "". This is a valid
+     * path (i.e. the user should be able to do 'file exists ""' without
+     * throwing an error), but equally the path doesn't exist. Those are the
+     * semantics of Tcl (at present anyway), so we have to abide by them here.
+     */
+
+    if (pathPtr->typePtr == &tclFsPathType) {
+	if (pathPtr->bytes != NULL && pathPtr->bytes[0] == '\0') {
+	    /*
+	     * We reject the empty path "".
+	     */
+
+	    return -1;
+	}
+
+	/*
+	 * Otherwise there is no way this path can be empty.
+	 */
+    } else {
+	/*
+	 * It is somewhat unusual to reach this code path without the object
+	 * being of tclFsPathType. However, we do our best to deal with the
+	 * situation.
+	 */
+
+	int len;
+
+	(void) Tcl_GetStringFromObj(pathPtr, &len);
+	if (len == 0) {
+	    /*
+	     * We reject the empty path "".
+	     */
+
+	    return -1;
+	}
+    }
+
+    /*
+     * Path is of correct type, or is of non-zero length, so we accept it.
+     */
+
+    return TCL_OK;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclPipe.c b/generic/tclPipe.c
index 6e7029e..698f85d 100644
--- a/generic/tclPipe.c
+++ b/generic/tclPipe.c
@@ -1,60 +1,56 @@
-/* 
+/*
  * tclPipe.c --
  *
- *	This file contains the generic portion of the command channel
- *	driver as well as various utility routines used in managing
- *	subprocesses.
+ *	This file contains the generic portion of the command channel driver
+ *	as well as various utility routines used in managing subprocesses.
  *
  * Copyright (c) 1997 by Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
- * A linked list of the following structures is used to keep track
- * of child processes that have been detached but haven't exited
- * yet, so we can make sure that they're properly "reaped" (officially
- * waited for) and don't lie around as zombies cluttering the
- * system.
+ * A linked list of the following structures is used to keep track of child
+ * processes that have been detached but haven't exited yet, so we can make
+ * sure that they're properly "reaped" (officially waited for) and don't lie
+ * around as zombies cluttering the system.
  */
 
 typedef struct Detached {
-    Tcl_Pid pid;			/* Id of process that's been detached
-					 * but isn't known to have exited. */
-    struct Detached *nextPtr;		/* Next in list of all detached
-					 * processes. */
+    Tcl_Pid pid;		/* Id of process that's been detached but
+				 * isn't known to have exited. */
+    struct Detached *nextPtr;	/* Next in list of all detached processes. */
 } Detached;
 
-static Detached *detList = NULL;	/* List of all detached proceses. */
-TCL_DECLARE_MUTEX(pipeMutex)		/* Guard access to detList. */
+static Detached *detList = NULL;/* List of all detached proceses. */
+TCL_DECLARE_MUTEX(pipeMutex)	/* Guard access to detList. */
 
 /*
- * Declarations for local procedures defined in this file:
+ * Declarations for local functions defined in this file:
  */
 
-static TclFile	FileForRedirect _ANSI_ARGS_((Tcl_Interp *interp,
-	            CONST char *spec, int atOk, CONST char *arg, 
-		    CONST char *nextArg, int flags, int *skipPtr,
-		    int *closePtr, int *releasePtr));
+static TclFile		FileForRedirect(Tcl_Interp *interp, CONST char *spec,
+			    int atOk, CONST char *arg, CONST char *nextArg,
+			    int flags, int *skipPtr, int *closePtr,
+			    int *releasePtr);
 
 /*
  *----------------------------------------------------------------------
  *
  * FileForRedirect --
  *
- *	This procedure does much of the work of parsing redirection
- *	operators.  It handles "@" if specified and allowed, and a file
- *	name, and opens the file if necessary.
+ *	This function does much of the work of parsing redirection operators.
+ *	It handles "@" if specified and allowed, and a file name, and opens
+ *	the file if necessary.
  *
  * Results:
- *	The return value is the descriptor number for the file.  If an
- *	error occurs then NULL is returned and an error message is left
- *	in the interp's result.  Several arguments are side-effected; see
- *	the argument list below for details.
+ *	The return value is the descriptor number for the file. If an error
+ *	occurs then NULL is returned and an error message is left in the
+ *	interp's result. Several arguments are side-effected; see the argument
+ *	list below for details.
  *
  * Side effects:
  *	None.
@@ -63,34 +59,33 @@ static TclFile	FileForRedirect _ANSI_ARGS_((Tcl_Interp *interp,
  */
 
 static TclFile
-FileForRedirect(interp, spec, atOK, arg, nextArg, flags, skipPtr, closePtr,
-	releasePtr)
-    Tcl_Interp *interp;		/* Intepreter to use for error reporting. */
-    CONST char *spec;		/* Points to character just after
-				 * redirection character. */
-    int atOK;			/* Non-zero means that '@' notation can be 
+FileForRedirect(
+    Tcl_Interp *interp,		/* Intepreter to use for error reporting. */
+    CONST char *spec,		/* Points to character just after redirection
+				 * character. */
+    int atOK,			/* Non-zero means that '@' notation can be
 				 * used to specify a channel, zero means that
 				 * it isn't. */
-    CONST char *arg;		/* Pointer to entire argument containing 
-				 * spec:  used for error reporting. */
-    CONST char *nextArg;	/* Next argument in argc/argv array, if needed 
-				 * for file name or channel name.  May be 
+    CONST char *arg,		/* Pointer to entire argument containing spec:
+				 * used for error reporting. */
+    CONST char *nextArg,	/* Next argument in argc/argv array, if needed
+				 * for file name or channel name. May be
 				 * NULL. */
-    int flags;			/* Flags to use for opening file or to 
-				 * specify mode for channel. */
-    int *skipPtr;		/* Filled with 1 if redirection target was
-				 * in spec, 2 if it was in nextArg. */
-    int *closePtr;		/* Filled with one if the caller should 
-				 * close the file when done with it, zero
+    int flags,			/* Flags to use for opening file or to specify
+				 * mode for channel. */
+    int *skipPtr,		/* Filled with 1 if redirection target was in
+				 * spec, 2 if it was in nextArg. */
+    int *closePtr,		/* Filled with one if the caller should close
+				 * the file when done with it, zero
 				 * otherwise. */
-    int *releasePtr;
+    int *releasePtr)
 {
     int writing = (flags & O_WRONLY);
     Tcl_Channel chan;
     TclFile file;
 
     *skipPtr = 1;
-    if ((atOK != 0)  && (*spec == '@')) {
+    if ((atOK != 0) && (*spec == '@')) {
 	spec++;
 	if (*spec == '\0') {
 	    spec = nextArg;
@@ -105,18 +100,22 @@ FileForRedirect(interp, spec, atOK, arg, nextArg, flags, skipPtr, closePtr,
         }
 	file = TclpMakeFile(chan, writing ? TCL_WRITABLE : TCL_READABLE);
         if (file == NULL) {
-	    Tcl_AppendResult(interp, "channel \"", Tcl_GetChannelName(chan),
-		    "\" wasn't opened for ",
-		    ((writing) ? "writing" : "reading"), (char *) NULL);
+	    Tcl_Obj* msg;
+	    Tcl_GetChannelError(chan, &msg);
+	    if (msg) {
+		Tcl_SetObjResult (interp, msg);
+	    } else {
+		Tcl_AppendResult(interp, "channel \"", Tcl_GetChannelName(chan),
+				 "\" wasn't opened for ",
+				 ((writing) ? "writing" : "reading"), NULL);
+	    }
             return NULL;
         }
 	*releasePtr = 1;
 	if (writing) {
-
 	    /*
-	     * Be sure to flush output to the file, so that anything
-	     * written by the child appears after stuff we've already
-	     * written.
+	     * Be sure to flush output to the file, so that anything written
+	     * by the child appears after stuff we've already written.
 	     */
 
             Tcl_Flush(chan);
@@ -141,16 +140,16 @@ FileForRedirect(interp, spec, atOK, arg, nextArg, flags, skipPtr, closePtr,
 	if (file == NULL) {
 	    Tcl_AppendResult(interp, "couldn't ",
 		    ((writing) ? "write" : "read"), " file \"", spec, "\": ",
-		    Tcl_PosixError(interp), (char *) NULL);
+		    Tcl_PosixError(interp), NULL);
 	    return NULL;
 	}
         *closePtr = 1;
     }
     return file;
 
-    badLastArg:
+  badLastArg:
     Tcl_AppendResult(interp, "can't specify \"", arg,
-	    "\" as last word in command", (char *) NULL);
+	    "\" as last word in command", NULL);
     return NULL;
 }
 
@@ -159,10 +158,9 @@ FileForRedirect(interp, spec, atOK, arg, nextArg, flags, skipPtr, closePtr,
  *
  * Tcl_DetachPids --
  *
- *	This procedure is called to indicate that one or more child
- *	processes have been placed in background and will never be
- *	waited for;  they should eventually be reaped by
- *	Tcl_ReapDetachedProcs.
+ *	This function is called to indicate that one or more child processes
+ *	have been placed in background and will never be waited for; they
+ *	should eventually be reaped by Tcl_ReapDetachedProcs.
  *
  * Results:
  *	None.
@@ -174,10 +172,10 @@ FileForRedirect(interp, spec, atOK, arg, nextArg, flags, skipPtr, closePtr,
  */
 
 void
-Tcl_DetachPids(numPids, pidPtr)
-    int numPids;		/* Number of pids to detach:  gives size
-				 * of array pointed to by pidPtr. */
-    Tcl_Pid *pidPtr;		/* Array of pids to detach. */
+Tcl_DetachPids(
+    int numPids,		/* Number of pids to detach: gives size of
+				 * array pointed to by pidPtr. */
+    Tcl_Pid *pidPtr)		/* Array of pids to detach. */
 {
     register Detached *detPtr;
     int i;
@@ -198,23 +196,22 @@ Tcl_DetachPids(numPids, pidPtr)
  *
  * Tcl_ReapDetachedProcs --
  *
- *	This procedure checks to see if any detached processes have
- *	exited and, if so, it "reaps" them by officially waiting on
- *	them.  It should be called "occasionally" to make sure that
- *	all detached processes are eventually reaped.
+ *	This function checks to see if any detached processes have exited and,
+ *	if so, it "reaps" them by officially waiting on them. It should be
+ *	called "occasionally" to make sure that all detached processes are
+ *	eventually reaped.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Processes are waited on, so that they can be reaped by the
- *	system.
+ *	Processes are waited on, so that they can be reaped by the system.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_ReapDetachedProcs()
+Tcl_ReapDetachedProcs(void)
 {
     register Detached *detPtr;
     Detached *nextPtr, *prevPtr;
@@ -246,30 +243,30 @@ Tcl_ReapDetachedProcs()
  *
  * TclCleanupChildren --
  *
- *	This is a utility procedure used to wait for child processes
- *	to exit, record information about abnormal exits, and then
- *	collect any stderr output generated by them.
+ *	This is a utility function used to wait for child processes to exit,
+ *	record information about abnormal exits, and then collect any stderr
+ *	output generated by them.
  *
  * Results:
- *	The return value is a standard Tcl result.  If anything at
- *	weird happened with the child processes, TCL_ERROR is returned
- *	and a message is left in the interp's result.
+ *	The return value is a standard Tcl result. If anything at weird
+ *	happened with the child processes, TCL_ERROR is returned and a message
+ *	is left in the interp's result.
  *
  * Side effects:
- *	If the last character of the interp's result is a newline, then it
- *	is removed unless keepNewline is non-zero.  File errorId gets
- *	closed, and pidPtr is freed back to the storage allocator.
+ *	If the last character of the interp's result is a newline, then it is
+ *	removed unless keepNewline is non-zero. File errorId gets closed, and
+ *	pidPtr is freed back to the storage allocator.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclCleanupChildren(interp, numPids, pidPtr, errorChan)
-    Tcl_Interp *interp;		/* Used for error messages. */
-    int numPids;		/* Number of entries in pidPtr array. */
-    Tcl_Pid *pidPtr;		/* Array of process ids of children. */
-    Tcl_Channel errorChan;	/* Channel for file containing stderr output
-				 * from pipeline.  NULL means there isn't any
+TclCleanupChildren(
+    Tcl_Interp *interp,		/* Used for error messages. */
+    int numPids,		/* Number of entries in pidPtr array. */
+    Tcl_Pid *pidPtr,		/* Array of process ids of children. */
+    Tcl_Channel errorChan)	/* Channel for file containing stderr output
+				 * from pipeline. NULL means there isn't any
 				 * stderr output. */
 {
     int result = TCL_OK;
@@ -282,93 +279,83 @@ TclCleanupChildren(interp, numPids, pidPtr, errorChan)
     abnormalExit = 0;
     for (i = 0; i < numPids; i++) {
 	/*
-	 * We need to get the resolved pid before we wait on it as
-	 * the windows implementation of Tcl_WaitPid deletes the
-	 * information such that any following calls to TclpGetPid
-	 * fail.
+	 * We need to get the resolved pid before we wait on it as the windows
+	 * implementation of Tcl_WaitPid deletes the information such that any
+	 * following calls to TclpGetPid fail.
 	 */
+
 	resolvedPid = TclpGetPid(pidPtr[i]);
         pid = Tcl_WaitPid(pidPtr[i], (int *) &waitStatus, 0);
 	if (pid == (Tcl_Pid) -1) {
 	    result = TCL_ERROR;
-            if (interp != (Tcl_Interp *) NULL) {
+            if (interp != NULL) {
                 msg = Tcl_PosixError(interp);
                 if (errno == ECHILD) {
 		    /*
-                     * This changeup in message suggested by Mark Diekhans
-                     * to remind people that ECHILD errors can occur on
-                     * some systems if SIGCHLD isn't in its default state.
+                     * This changeup in message suggested by Mark Diekhans to
+                     * remind people that ECHILD errors can occur on some
+                     * systems if SIGCHLD isn't in its default state.
                      */
 
                     msg =
                         "child process lost (is SIGCHLD ignored or trapped?)";
                 }
                 Tcl_AppendResult(interp, "error waiting for process to exit: ",
-                        msg, (char *) NULL);
+                        msg, NULL);
             }
 	    continue;
 	}
 
 	/*
-	 * Create error messages for unusual process exits.  An
-	 * extra newline gets appended to each error message, but
-	 * it gets removed below (in the same fashion that an
-	 * extra newline in the command's output is removed).
+	 * Create error messages for unusual process exits. An extra newline
+	 * gets appended to each error message, but it gets removed below (in
+	 * the same fashion that an extra newline in the command's output is
+	 * removed).
 	 */
 
 	if (!WIFEXITED(waitStatus) || (WEXITSTATUS(waitStatus) != 0)) {
 	    char msg1[TCL_INTEGER_SPACE], msg2[TCL_INTEGER_SPACE];
 
 	    result = TCL_ERROR;
-	    TclFormatInt(msg1, (long) resolvedPid);
+	    sprintf(msg1, "%lu", resolvedPid);
 	    if (WIFEXITED(waitStatus)) {
                 if (interp != (Tcl_Interp *) NULL) {
-		    TclFormatInt(msg2, WEXITSTATUS(waitStatus));
-                    Tcl_SetErrorCode(interp, "CHILDSTATUS", msg1, msg2,
-                            (char *) NULL);
+		    sprintf(msg2, "%lu",
+			    (unsigned long) WEXITSTATUS(waitStatus));
+                    Tcl_SetErrorCode(interp, "CHILDSTATUS", msg1, msg2, NULL);
                 }
 		abnormalExit = 1;
-	    } else if (WIFSIGNALED(waitStatus)) {
-                if (interp != (Tcl_Interp *) NULL) {
-                    CONST char *p;
-                    
+	    } else if (interp != NULL) {
+		CONST char *p;
+
+		if (WIFSIGNALED(waitStatus)) {
                     p = Tcl_SignalMsg((int) (WTERMSIG(waitStatus)));
                     Tcl_SetErrorCode(interp, "CHILDKILLED", msg1,
                             Tcl_SignalId((int) (WTERMSIG(waitStatus))), p,
-                            (char *) NULL);
-                    Tcl_AppendResult(interp, "child killed: ", p, "\n",
-                            (char *) NULL);
-                }
-	    } else if (WIFSTOPPED(waitStatus)) {
-                if (interp != (Tcl_Interp *) NULL) {
-                    CONST char *p;
-
+                            NULL);
+                    Tcl_AppendResult(interp, "child killed: ", p, "\n", NULL);
+		} else if (WIFSTOPPED(waitStatus)) {
                     p = Tcl_SignalMsg((int) (WSTOPSIG(waitStatus)));
                     Tcl_SetErrorCode(interp, "CHILDSUSP", msg1,
-                            Tcl_SignalId((int) (WSTOPSIG(waitStatus))),
-                            p, (char *) NULL);
+                            Tcl_SignalId((int) (WSTOPSIG(waitStatus))), p,
+			    NULL);
                     Tcl_AppendResult(interp, "child suspended: ", p, "\n",
-                            (char *) NULL);
-                }
-	    } else {
-                if (interp != (Tcl_Interp *) NULL) {
+                            NULL);
+		} else {
                     Tcl_AppendResult(interp,
-                            "child wait status didn't make sense\n",
-                            (char *) NULL);
+                            "child wait status didn't make sense\n", NULL);
                 }
 	    }
 	}
     }
 
     /*
-     * Read the standard error file.  If there's anything there,
-     * then return an error and add the file's contents to the result
-     * string.
+     * Read the standard error file. If there's anything there, then return an
+     * error and add the file's contents to the result string.
      */
 
     anyErrorInfo = 0;
     if (errorChan != NULL) {
-
 	/*
 	 * Make sure we start at the beginning of the file.
 	 */
@@ -376,7 +363,7 @@ TclCleanupChildren(interp, numPids, pidPtr, errorChan)
         if (interp != NULL) {
 	    int count;
 	    Tcl_Obj *objPtr;
-	    
+
 	    Tcl_Seek(errorChan, (Tcl_WideInt)0, SEEK_SET);
 	    objPtr = Tcl_NewObj();
 	    count = Tcl_ReadChars(errorChan, objPtr, -1, 0);
@@ -398,13 +385,12 @@ TclCleanupChildren(interp, numPids, pidPtr, errorChan)
     }
 
     /*
-     * If a child exited abnormally but didn't output any error information
-     * at all, generate an error message here.
+     * If a child exited abnormally but didn't output any error information at
+     * all, generate an error message here.
      */
 
     if ((abnormalExit != 0) && (anyErrorInfo == 0) && (interp != NULL)) {
-	Tcl_AppendResult(interp, "child process exited abnormally",
-		(char *) NULL);
+	Tcl_AppendResult(interp, "child process exited abnormally", NULL);
     }
     return result;
 }
@@ -414,25 +400,23 @@ TclCleanupChildren(interp, numPids, pidPtr, errorChan)
  *
  * TclCreatePipeline --
  *
- *	Given an argc/argv array, instantiate a pipeline of processes
- *	as described by the argv.
+ *	Given an argc/argv array, instantiate a pipeline of processes as
+ *	described by the argv.
  *
- *	This procedure is unofficially exported for use by BLT.
+ *	This function is unofficially exported for use by BLT.
  *
  * Results:
- *	The return value is a count of the number of new processes
- *	created, or -1 if an error occurred while creating the pipeline.
- *	*pidArrayPtr is filled in with the address of a dynamically
- *	allocated array giving the ids of all of the processes.  It
- *	is up to the caller to free this array when it isn't needed
- *	anymore.  If inPipePtr is non-NULL, *inPipePtr is filled in
- *	with the file id for the input pipe for the pipeline (if any):
- *	the caller must eventually close this file.  If outPipePtr
- *	isn't NULL, then *outPipePtr is filled in with the file id
- *	for the output pipe from the pipeline:  the caller must close
- *	this file.  If errFilePtr isn't NULL, then *errFilePtr is filled
- *	with a file id that may be used to read error output after the
- *	pipeline completes.
+ *	The return value is a count of the number of new processes created, or
+ *	-1 if an error occurred while creating the pipeline. *pidArrayPtr is
+ *	filled in with the address of a dynamically allocated array giving the
+ *	ids of all of the processes. It is up to the caller to free this array
+ *	when it isn't needed anymore. If inPipePtr is non-NULL, *inPipePtr is
+ *	filled in with the file id for the input pipe for the pipeline (if
+ *	any): the caller must eventually close this file. If outPipePtr isn't
+ *	NULL, then *outPipePtr is filled in with the file id for the output
+ *	pipe from the pipeline: the caller must close this file. If errFilePtr
+ *	isn't NULL, then *errFilePtr is filled with a file id that may be used
+ *	to read error output after the pipeline completes.
  *
  * Side effects:
  *	Processes and pipes are created.
@@ -441,67 +425,66 @@ TclCleanupChildren(interp, numPids, pidPtr, errorChan)
  */
 
 int
-TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
-	outPipePtr, errFilePtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. */
-    int argc;			/* Number of entries in argv. */
-    CONST char **argv;		/* Array of strings describing commands in
-				 * pipeline plus I/O redirection with <,
-				 * <<,  >, etc.  Argv[argc] must be NULL. */
-    Tcl_Pid **pidArrayPtr;	/* Word at *pidArrayPtr gets filled in with
-				 * address of array of pids for processes
-				 * in pipeline (first pid is first process
-				 * in pipeline). */
-    TclFile *inPipePtr;		/* If non-NULL, input to the pipeline comes
+TclCreatePipeline(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. */
+    int argc,			/* Number of entries in argv. */
+    CONST char **argv,		/* Array of strings describing commands in
+				 * pipeline plus I/O redirection with <, <<,
+				 * >, etc. Argv[argc] must be NULL. */
+    Tcl_Pid **pidArrayPtr,	/* Word at *pidArrayPtr gets filled in with
+				 * address of array of pids for processes in
+				 * pipeline (first pid is first process in
+				 * pipeline). */
+    TclFile *inPipePtr,		/* If non-NULL, input to the pipeline comes
 				 * from a pipe (unless overridden by
-				 * redirection in the command).  The file
-				 * id with which to write to this pipe is
-				 * stored at *inPipePtr.  NULL means command
-				 * specified its own input source. */
-    TclFile *outPipePtr;	/* If non-NULL, output to the pipeline goes
-				 * to a pipe, unless overriden by redirection
-				 * in the command.  The file id with which to
-				 * read frome this pipe is stored at
-				 * *outPipePtr.  NULL means command specified
-				 * its own output sink. */
-    TclFile *errFilePtr;	/* If non-NULL, all stderr output from the
+				 * redirection in the command). The file id
+				 * with which to write to this pipe is stored
+				 * at *inPipePtr. NULL means command specified
+				 * its own input source. */
+    TclFile *outPipePtr,	/* If non-NULL, output to the pipeline goes to
+				 * a pipe, unless overriden by redirection in
+				 * the command. The file id with which to read
+				 * frome this pipe is stored at *outPipePtr.
+				 * NULL means command specified its own output
+				 * sink. */
+    TclFile *errFilePtr)	/* If non-NULL, all stderr output from the
 				 * pipeline will go to a temporary file
-				 * created here, and a descriptor to read
-				 * the file will be left at *errFilePtr.
-				 * The file will be removed already, so
-				 * closing this descriptor will be the end
-				 * of the file.  If this is NULL, then
-				 * all stderr output goes to our stderr.
-				 * If the pipeline specifies redirection
-				 * then the file will still be created
-				 * but it will never get any data. */
+				 * created here, and a descriptor to read the
+				 * file will be left at *errFilePtr. The file
+				 * will be removed already, so closing this
+				 * descriptor will be the end of the file. If
+				 * this is NULL, then all stderr output goes
+				 * to our stderr. If the pipeline specifies
+				 * redirection then the file will still be
+				 * created but it will never get any data. */
 {
-    Tcl_Pid *pidPtr = NULL;	/* Points to malloc-ed array holding all
-				 * the pids of child processes. */
-    int numPids;		/* Actual number of processes that exist
-				 * at *pidPtr right now. */
-    int cmdCount;		/* Count of number of distinct commands
-				 * found in argc/argv. */
-    CONST char *inputLiteral = NULL;	/* If non-null, then this points to a
-				 * string containing input data (specified
-				 * via <<) to be piped to the first process
-				 * in the pipeline. */
+    Tcl_Pid *pidPtr = NULL;	/* Points to malloc-ed array holding all the
+				 * pids of child processes. */
+    int numPids;		/* Actual number of processes that exist at
+				 * *pidPtr right now. */
+    int cmdCount;		/* Count of number of distinct commands found
+				 * in argc/argv. */
+    CONST char *inputLiteral = NULL;
+				/* If non-null, then this points to a string
+				 * containing input data (specified via <<) to
+				 * be piped to the first process in the
+				 * pipeline. */
     TclFile inputFile = NULL;	/* If != NULL, gives file to use as input for
 				 * first process in pipeline (specified via <
 				 * or <@). */
-    int inputClose = 0;		/* If non-zero, then inputFile should be 
+    int inputClose = 0;		/* If non-zero, then inputFile should be
     				 * closed when cleaning up. */
     int inputRelease = 0;
     TclFile outputFile = NULL;	/* Writable file for output from last command
-				 * in pipeline (could be file or pipe).  NULL
+				 * in pipeline (could be file or pipe). NULL
 				 * means use stdout. */
-    int outputClose = 0;	/* If non-zero, then outputFile should be 
+    int outputClose = 0;	/* If non-zero, then outputFile should be
     				 * closed when cleaning up. */
     int outputRelease = 0;
     TclFile errorFile = NULL;	/* Writable file for error output from all
-				 * commands in pipeline.  NULL means use
+				 * commands in pipeline. NULL means use
 				 * stderr. */
-    int errorClose = 0;		/* If non-zero, then errorFile should be 
+    int errorClose = 0;		/* If non-zero, then errorFile should be
     				 * closed when cleaning up. */
     int errorRelease = 0;
     CONST char *p;
@@ -523,23 +506,23 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
     }
 
     Tcl_DStringInit(&execBuffer);
-    
+
     pipeIn = NULL;
     curInFile = NULL;
     curOutFile = NULL;
     numPids = 0;
 
     /*
-     * First, scan through all the arguments to figure out the structure
-     * of the pipeline.  Process all of the input and output redirection
-     * arguments and remove them from the argument list in the pipeline.
-     * Count the number of distinct processes (it's the number of "|"
-     * arguments plus one) but don't remove the "|" arguments because 
-     * they'll be used in the second pass to seperate the individual 
-     * child processes.  Cannot start the child processes in this pass 
-     * because the redirection symbols may appear anywhere in the 
-     * command line -- e.g., the '<' that specifies the input to the 
-     * entire pipe may appear at the very end of the argument list.
+     * First, scan through all the arguments to figure out the structure of
+     * the pipeline. Process all of the input and output redirection arguments
+     * and remove them from the argument list in the pipeline. Count the
+     * number of distinct processes (it's the number of "|" arguments plus
+     * one) but don't remove the "|" arguments because they'll be used in the
+     * second pass to seperate the individual child processes. Cannot start
+     * the child processes in this pass because the redirection symbols may
+     * appear anywhere in the command line - e.g., the '<' that specifies the
+     * input to the entire pipe may appear at the very end of the argument
+     * list.
      */
 
     lastBar = -1;
@@ -556,8 +539,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    }
 	    if (*p == '\0') {
 		if ((i == (lastBar + 1)) || (i == (argc - 1))) {
-		    Tcl_SetResult(interp,
-			    "illegal use of | or |& in command",
+		    Tcl_SetResult(interp, "illegal use of | or |& in command",
 			    TCL_STATIC);
 		    goto error;
 		}
@@ -584,7 +566,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 		    inputLiteral = ((i + 1) == argc) ? NULL : argv[i + 1];
 		    if (inputLiteral == NULL) {
 			Tcl_AppendResult(interp, "can't specify \"", argv[i],
-				"\" as last word in command", (char *) NULL);
+				"\" as last word in command", NULL);
 			goto error;
 		    }
 		    skip = 2;
@@ -592,8 +574,8 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    } else {
 		nextArg = ((i + 1) == argc) ? NULL : argv[i + 1];
 		inputLiteral = NULL;
-		inputFile = FileForRedirect(interp, p, 1, argv[i], 
-			nextArg, O_RDONLY, &skip, &inputClose, &inputRelease);
+		inputFile = FileForRedirect(interp, p, 1, argv[i], nextArg,
+			O_RDONLY, &skip, &inputClose, &inputRelease);
 		if (inputFile == NULL) {
 		    goto error;
 		}
@@ -624,8 +606,8 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    }
 
 	    /*
-	     * Close the old output file, but only if the error file is
-	     * not also using it.
+	     * Close the old output file, but only if the error file is not
+	     * also using it.
 	     */
 
 	    if (outputClose != 0) {
@@ -645,8 +627,8 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 		}
 	    }
 	    nextArg = ((i + 1) == argc) ? NULL : argv[i + 1];
-	    outputFile = FileForRedirect(interp, p, atOK, argv[i], 
-		    nextArg, flags, &skip, &outputClose, &outputRelease);
+	    outputFile = FileForRedirect(interp, p, atOK, argv[i], nextArg,
+		    flags, &skip, &outputClose, &outputRelease);
 	    if (outputFile == NULL) {
 		goto error;
 	    }
@@ -686,12 +668,13 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    if (atOK && p[0] == '@' && p[1] == '1' && p[2] == '\0') {
 		/*
 		 * Special case handling of 2>@1 to redirect stderr to the
-		 * exec/open output pipe as well.  This is meant for the end
-		 * of the command string, otherwise use |& between commands.
+		 * exec/open output pipe as well. This is meant for the end of
+		 * the command string, otherwise use |& between commands.
 		 */
-		if (i != argc - 1) {
+
+		if (i != argc-1) {
 		    Tcl_AppendResult(interp, "must specify \"", argv[i],
-			    "\" as last word in command", (char *) NULL);
+			    "\" as last word in command", NULL);
 		    goto error;
 		}
 		errorFile = outputFile;
@@ -699,7 +682,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 		skip = 1;
 	    } else {
 		nextArg = ((i + 1) == argc) ? NULL : argv[i + 1];
-		errorFile = FileForRedirect(interp, p, atOK, argv[i], 
+		errorFile = FileForRedirect(interp, p, atOK, argv[i],
 			nextArg, flags, &skip, &errorClose, &errorRelease);
 		if (errorFile == NULL) {
 		    goto error;
@@ -723,7 +706,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
     }
 
     if (needCmd) {
-        /* We had a bar followed only by redirections. */
+	/* We had a bar followed only by redirections. */
 
         Tcl_SetResult(interp,
 		      "illegal use of | or |& in command",
@@ -735,27 +718,28 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	if (inputLiteral != NULL) {
 	    /*
 	     * The input for the first process is immediate data coming from
-	     * Tcl.  Create a temporary file for it and put the data into the
+	     * Tcl. Create a temporary file for it and put the data into the
 	     * file.
 	     */
+
 	    inputFile = TclpCreateTempFile(inputLiteral);
 	    if (inputFile == NULL) {
 		Tcl_AppendResult(interp,
 			"couldn't create input file for command: ",
-			Tcl_PosixError(interp), (char *) NULL);
+			Tcl_PosixError(interp), NULL);
 		goto error;
 	    }
 	    inputClose = 1;
 	} else if (inPipePtr != NULL) {
 	    /*
-	     * The input for the first process in the pipeline is to
-	     * come from a pipe that can be written from by the caller.
+	     * The input for the first process in the pipeline is to come from
+	     * a pipe that can be written from by the caller.
 	     */
 
 	    if (TclpCreatePipe(&inputFile, inPipePtr) == 0) {
-		Tcl_AppendResult(interp, 
+		Tcl_AppendResult(interp,
 			"couldn't create input pipe for command: ",
-			Tcl_PosixError(interp), (char *) NULL);
+			Tcl_PosixError(interp), NULL);
 		goto error;
 	    }
 	    inputClose = 1;
@@ -777,14 +761,14 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
     if (outputFile == NULL) {
 	if (outPipePtr != NULL) {
 	    /*
-	     * Output from the last process in the pipeline is to go to a
-	     * pipe that can be read by the caller.
+	     * Output from the last process in the pipeline is to go to a pipe
+	     * that can be read by the caller.
 	     */
 
 	    if (TclpCreatePipe(outPipePtr, &outputFile) == 0) {
-		Tcl_AppendResult(interp, 
+		Tcl_AppendResult(interp,
 			"couldn't create output pipe for command: ",
-			Tcl_PosixError(interp), (char *) NULL);
+			Tcl_PosixError(interp), NULL);
 		goto error;
 	    }
 	    outputClose = 1;
@@ -806,16 +790,17 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
     if (errorFile == NULL) {
 	if (errorToOutput == 2) {
 	    /*
-	     * Handle 2>@1 special case at end of cmd line
+	     * Handle 2>@1 special case at end of cmd line.
 	     */
+
 	    errorFile = outputFile;
 	} else if (errFilePtr != NULL) {
 	    /*
 	     * Set up the standard error output sink for the pipeline, if
-	     * requested.  Use a temporary file which is opened, then deleted.
+	     * requested. Use a temporary file which is opened, then deleted.
 	     * Could potentially just use pipe, but if it filled up it could
-	     * cause the pipeline to deadlock:  we'd be waiting for processes
-	     * to complete before reading stderr, and processes couldn't 
+	     * cause the pipeline to deadlock: we'd be waiting for processes
+	     * to complete before reading stderr, and processes couldn't
 	     * complete because stderr was backed up.
 	     */
 
@@ -823,7 +808,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    if (errorFile == NULL) {
 		Tcl_AppendResult(interp,
 			"couldn't create error file for command: ",
-			Tcl_PosixError(interp), (char *) NULL);
+			Tcl_PosixError(interp), NULL);
 		goto error;
 	    }
 	    *errFilePtr = errorFile;
@@ -841,10 +826,10 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    }
 	}
     }
-	
+
     /*
-     * Scan through the argc array, creating a process for each
-     * group of arguments between the "|" characters.
+     * Scan through the argc array, creating a process for each group of
+     * arguments between the "|" characters.
      */
 
     Tcl_ReapDetachedProcs();
@@ -852,13 +837,13 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 
     curInFile = inputFile;
 
-    for (i = 0; i < argc; i = lastArg + 1) { 
+    for (i = 0; i < argc; i = lastArg + 1) {
 	int result, joinThisError;
 	Tcl_Pid pid;
 	CONST char *oldName;
 
 	/*
-	 * Convert the program name into native form. 
+	 * Convert the program name into native form.
 	 */
 
 	if (Tcl_TranslateFileName(interp, argv[i], &execBuffer) == NULL) {
@@ -871,20 +856,21 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 
 	joinThisError = 0;
 	for (lastArg = i; lastArg < argc; lastArg++) {
-	    if (argv[lastArg][0] == '|') { 
-		if (argv[lastArg][1] == '\0') { 
-		    break;
-		}
-		if ((argv[lastArg][1] == '&') && (argv[lastArg][2] == '\0')) {
-		    joinThisError = 1;
-		    break;
-		}
+	    if (argv[lastArg][0] != '|') {
+		continue;
+	    }
+	    if (argv[lastArg][1] == '\0') {
+		break;
+	    }
+	    if ((argv[lastArg][1] == '&') && (argv[lastArg][2] == '\0')) {
+		joinThisError = 1;
+		break;
 	    }
 	}
 
 	/*
 	 * If this is the last segment, use the specified outputFile.
-	 * Otherwise create an intermediate pipe.  pipeIn will become the
+	 * Otherwise create an intermediate pipe. pipeIn will become the
 	 * curInFile for the next segment of the pipe.
 	 */
 
@@ -894,7 +880,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	    argv[lastArg] = NULL;
 	    if (TclpCreatePipe(&pipeIn, &curOutFile) == 0) {
 		Tcl_AppendResult(interp, "couldn't create pipe: ",
-			Tcl_PosixError(interp), (char *) NULL);
+			Tcl_PosixError(interp), NULL);
 		goto error;
 	    }
 	}
@@ -909,7 +895,7 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	 * Restore argv[i], since a caller wouldn't expect the contents of
 	 * argv to be modified.
 	 */
-	 
+
 	oldName = argv[i];
 	argv[i] = Tcl_DStringValue(&execBuffer);
 	result = TclpCreateProcess(interp, lastArg - i, argv + i,
@@ -924,8 +910,8 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
 	numPids++;
 
 	/*
-	 * Close off our copies of file descriptors that were set up for
-	 * this child, then set up the input for the next child.
+	 * Close off our copies of file descriptors that were set up for this
+	 * child, then set up the input for the next child.
 	 */
 
 	if ((curInFile != NULL) && (curInFile != inputFile)) {
@@ -943,10 +929,10 @@ TclCreatePipeline(interp, argc, argv, pidArrayPtr, inPipePtr,
     *pidArrayPtr = pidPtr;
 
     /*
-     * All done.  Cleanup open files lying around and then return.
+     * All done. Cleanup open files lying around and then return.
      */
 
-cleanup:
+  cleanup:
     Tcl_DStringFree(&execBuffer);
 
     if (inputClose) {
@@ -967,12 +953,12 @@ cleanup:
     return numPids;
 
     /*
-     * An error occurred.  There could have been extra files open, such
-     * as pipes between children.  Clean them all up.  Detach any child
-     * processes that have been created.
+     * An error occurred. There could have been extra files open, such as
+     * pipes between children. Clean them all up. Detach any child processes
+     * that have been created.
      */
 
-error:
+  error:
     if (pipeIn != NULL) {
 	TclpCloseFile(pipeIn);
     }
@@ -1011,28 +997,26 @@ error:
  *
  * Tcl_OpenCommandChannel --
  *
- *	Opens an I/O channel to one or more subprocesses specified
- *	by argc and argv.  The flags argument determines the
- *	disposition of the stdio handles.  If the TCL_STDIN flag is
- *	set then the standard input for the first subprocess will
- *	be tied to the channel:  writing to the channel will provide
- *	input to the subprocess.  If TCL_STDIN is not set, then
- *	standard input for the first subprocess will be the same as
- *	this application's standard input.  If TCL_STDOUT is set then
- *	standard output from the last subprocess can be read from the
- *	channel;  otherwise it goes to this application's standard
- *	output.  If TCL_STDERR is set, standard error output for all
- *	subprocesses is returned to the channel and results in an error
- *	when the channel is closed;  otherwise it goes to this
- *	application's standard error.  If TCL_ENFORCE_MODE is not set,
- *	then argc and argv can redirect the stdio handles to override
- *	TCL_STDIN, TCL_STDOUT, and TCL_STDERR;  if it is set, then it 
- *	is an error for argc and argv to override stdio channels for
- *	which TCL_STDIN, TCL_STDOUT, and TCL_STDERR have been set.
+ *	Opens an I/O channel to one or more subprocesses specified by argc and
+ *	argv. The flags argument determines the disposition of the stdio
+ *	handles. If the TCL_STDIN flag is set then the standard input for the
+ *	first subprocess will be tied to the channel: writing to the channel
+ *	will provide input to the subprocess. If TCL_STDIN is not set, then
+ *	standard input for the first subprocess will be the same as this
+ *	application's standard input. If TCL_STDOUT is set then standard
+ *	output from the last subprocess can be read from the channel;
+ *	otherwise it goes to this application's standard output. If TCL_STDERR
+ *	is set, standard error output for all subprocesses is returned to the
+ *	channel and results in an error when the channel is closed; otherwise
+ *	it goes to this application's standard error. If TCL_ENFORCE_MODE is
+ *	not set, then argc and argv can redirect the stdio handles to override
+ *	TCL_STDIN, TCL_STDOUT, and TCL_STDERR; if it is set, then it is an
+ *	error for argc and argv to override stdio channels for which
+ *	TCL_STDIN, TCL_STDOUT, and TCL_STDERR have been set.
  *
  * Results:
- *	A new command channel, or NULL on failure with an error
- *	message left in interp.
+ *	A new command channel, or NULL on failure with an error message left
+ *	in interp.
  *
  * Side effects:
  *	Creates processes, opens pipes.
@@ -1041,12 +1025,12 @@ error:
  */
 
 Tcl_Channel
-Tcl_OpenCommandChannel(interp, argc, argv, flags)
-    Tcl_Interp *interp;		/* Interpreter for error reporting. Can
-                                 * NOT be NULL. */
-    int argc;			/* How many arguments. */
-    CONST char **argv;		/* Array of arguments for command pipe. */
-    int flags;			/* Or'ed combination of TCL_STDIN, TCL_STDOUT,
+Tcl_OpenCommandChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting. Can NOT be
+                                 * NULL. */
+    int argc,			/* How many arguments. */
+    CONST char **argv,		/* Array of arguments for command pipe. */
+    int flags)			/* Or'ed combination of TCL_STDIN, TCL_STDOUT,
 				 * TCL_STDERR, and TCL_ENFORCE_MODE. */
 {
     TclFile *inPipePtr, *outPipePtr, *errFilePtr;
@@ -1060,7 +1044,7 @@ Tcl_OpenCommandChannel(interp, argc, argv, flags)
     inPipePtr = (flags & TCL_STDIN) ? &inPipe : NULL;
     outPipePtr = (flags & TCL_STDOUT) ? &outPipe : NULL;
     errFilePtr = (flags & TCL_STDERR) ? &errFile : NULL;
-    
+
     numPids = TclCreatePipeline(interp, argc, argv, &pidPtr, inPipePtr,
             outPipePtr, errFilePtr);
 
@@ -1069,34 +1053,34 @@ Tcl_OpenCommandChannel(interp, argc, argv, flags)
     }
 
     /*
-     * Verify that the pipes that were created satisfy the
-     * readable/writable constraints. 
+     * Verify that the pipes that were created satisfy the readable/writable
+     * constraints.
      */
 
     if (flags & TCL_ENFORCE_MODE) {
 	if ((flags & TCL_STDOUT) && (outPipe == NULL)) {
-	    Tcl_AppendResult(interp, "can't read output from command:",
-		    " standard output was redirected", (char *) NULL);
+	    Tcl_AppendResult(interp, "can't read output from command:"
+		    " standard output was redirected", NULL);
 	    goto error;
 	}
 	if ((flags & TCL_STDIN) && (inPipe == NULL)) {
-	    Tcl_AppendResult(interp, "can't write input to command:",
-		    " standard input was redirected", (char *) NULL);
+	    Tcl_AppendResult(interp, "can't write input to command:"
+		    " standard input was redirected", NULL);
 	    goto error;
 	}
     }
-    
+
     channel = TclpCreateCommandChannel(outPipe, inPipe, errFile,
 	    numPids, pidPtr);
 
     if (channel == (Tcl_Channel) NULL) {
         Tcl_AppendResult(interp, "pipe for command could not be created",
-                (char *) NULL);
+                NULL);
 	goto error;
     }
     return channel;
 
-error:
+  error:
     if (numPids > 0) {
 	Tcl_DetachPids(numPids, pidPtr);
 	ckfree((char *) pidPtr);
@@ -1112,3 +1096,11 @@ error:
     }
     return NULL;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclPkg.c b/generic/tclPkg.c
index 940d011..b3396e6 100644
--- a/generic/tclPkg.c
+++ b/generic/tclPkg.c
@@ -1,14 +1,14 @@
-/* 
+/*
  * tclPkg.c --
  *
- *	This file implements package and version control for Tcl via
- *	the "package" command and a few C APIs.
+ *	This file implements package and version control for Tcl via the
+ *	"package" command and a few C APIs.
  *
  * Copyright (c) 1996 Sun Microsystems, Inc.
  * Copyright (c) 2006 Andreas Kupries <andreas_kupries@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
  * TIP #268.
  * Heavily rewritten to handle the extend version numbers, and extended
@@ -18,70 +18,60 @@
 #include "tclInt.h"
 
 /*
- * Each invocation of the "package ifneeded" command creates a structure
- * of the following type, which is used to load the package into the
- * interpreter if it is requested with a "package require" command.
+ * Each invocation of the "package ifneeded" command creates a structure of
+ * the following type, which is used to load the package into the interpreter
+ * if it is requested with a "package require" command.
  */
 
 typedef struct PkgAvail {
     char *version;		/* Version string; malloc'ed. */
-    char *script;		/* Script to invoke to provide this version
-				 * of the package.  Malloc'ed and protected
-				 * by Tcl_Preserve and Tcl_Release. */
-    struct PkgAvail *nextPtr;	/* Next in list of available versions of
-				 * the same package. */
+    char *script;		/* Script to invoke to provide this version of
+				 * the package. Malloc'ed and protected by
+				 * Tcl_Preserve and Tcl_Release. */
+    struct PkgAvail *nextPtr;	/* Next in list of available versions of the
+				 * same package. */
 } PkgAvail;
 
 /*
- * For each package that is known in any way to an interpreter, there
- * is one record of the following type.  These records are stored in
- * the "packageTable" hash table in the interpreter, keyed by
- * package name such as "Tk" (no version number).
+ * For each package that is known in any way to an interpreter, there is one
+ * record of the following type. These records are stored in the
+ * "packageTable" hash table in the interpreter, keyed by package name such as
+ * "Tk" (no version number).
  */
 
 typedef struct Package {
     char *version;		/* Version that has been supplied in this
 				 * interpreter via "package provide"
-				 * (malloc'ed).  NULL means the package doesn't
+				 * (malloc'ed). NULL means the package doesn't
 				 * exist in this interpreter yet. */
-    PkgAvail *availPtr;		/* First in list of all available versions
-				 * of this package. */
+    PkgAvail *availPtr;		/* First in list of all available versions of
+				 * this package. */
     ClientData clientData;	/* Client data. */
 } Package;
 
 /*
- * Prototypes for procedures defined in this file:
+ * Prototypes for functions defined in this file:
  */
 
-#ifndef TCL_TIP268
-static int		CheckVersion _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *string));
-static int		ComparePkgVersions _ANSI_ARGS_((CONST char *v1, 
-                            CONST char *v2,
-			    int *satPtr));
-static Package *	FindPackage _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *name));
-#else
 static int		CheckVersionAndConvert(Tcl_Interp *interp,
-			    CONST char *string, char** internal, int* stable);
-static int		CompareVersions(CONST char *v1i, CONST char *v2i,
+			    const char *string, char **internal, int *stable);
+static int		CompareVersions(char *v1i, char *v2i,
 			    int *isMajorPtr);
 static int		CheckRequirement(Tcl_Interp *interp,
-			    CONST char *string);
-static int		CheckAllRequirements(Tcl_Interp* interp, int reqc,
-			    Tcl_Obj *CONST reqv[]);
-static int		RequirementSatisfied(char *havei, CONST char *req);
+			    const char *string);
+static int		CheckAllRequirements(Tcl_Interp *interp, int reqc,
+			    Tcl_Obj *const reqv[]);
+static int		RequirementSatisfied(char *havei, const char *req);
 static int		SomeRequirementSatisfied(char *havei, int reqc,
-			    Tcl_Obj *CONST reqv[]);
-static void		AddRequirementsToResult(Tcl_Interp* interp, int reqc,
-			    Tcl_Obj *CONST reqv[]);
-static void		AddRequirementsToDString(Tcl_DString* dstring,
-			    int reqc, Tcl_Obj *CONST reqv[]);
-static Package *	FindPackage(Tcl_Interp *interp, CONST char *name);
-static CONST char *	PkgRequireCore(Tcl_Interp *interp, CONST char *name,
-			    int reqx, Tcl_Obj *CONST reqv[],
+			    Tcl_Obj *const reqv[]);
+static void		AddRequirementsToResult(Tcl_Interp *interp, int reqc,
+			    Tcl_Obj *const reqv[]);
+static void		AddRequirementsToDString(Tcl_DString *dstring,
+			    int reqc, Tcl_Obj *const reqv[]);
+static Package *	FindPackage(Tcl_Interp *interp, const char *name);
+static const char *	PkgRequireCore(Tcl_Interp *interp, const char *name,
+			    int reqc, Tcl_Obj *const reqv[],
 			    ClientData *clientDataPtr);
-#endif
 
 /*
  * Helper macros.
@@ -94,56 +84,50 @@ static CONST char *	PkgRequireCore(Tcl_Interp *interp, CONST char *name,
 	unsigned local__len = (unsigned) (strlen(s) + 1); \
 	DupBlock((v),(s),local__len); \
     } while (0)
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_PkgProvide / Tcl_PkgProvideEx --
  *
- *	This procedure is invoked to declare that a particular version
- *	of a particular package is now present in an interpreter.  There
- *	must not be any other version of this package already
- *	provided in the interpreter.
+ *	This function is invoked to declare that a particular version of a
+ *	particular package is now present in an interpreter. There must not be
+ *	any other version of this package already provided in the interpreter.
  *
  * Results:
- *	Normally returns TCL_OK;  if there is already another version
- *	of the package loaded then TCL_ERROR is returned and an error
- *	message is left in the interp's result.
+ *	Normally returns TCL_OK; if there is already another version of the
+ *	package loaded then TCL_ERROR is returned and an error message is left
+ *	in the interp's result.
  *
  * Side effects:
- *	The interpreter remembers that this package is available,
- *	so that no other version of the package may be provided for
- *	the interpreter.
+ *	The interpreter remembers that this package is available, so that no
+ *	other version of the package may be provided for the interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_PkgProvide(interp, name, version)
-     Tcl_Interp *interp;	/* Interpreter in which package is now
+Tcl_PkgProvide(
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     CONST char *name;		/* Name of package. */
-     CONST char *version;	/* Version string for package. */
+    const char *name,		/* Name of package. */
+    const char *version)	/* Version string for package. */
 {
-    return Tcl_PkgProvideEx(interp, name, version, (ClientData) NULL);
+    return Tcl_PkgProvideEx(interp, name, version, NULL);
 }
 
 int
-Tcl_PkgProvideEx(interp, name, version, clientData)
-     Tcl_Interp *interp;	/* Interpreter in which package is now
+Tcl_PkgProvideEx(
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     CONST char *name;		/* Name of package. */
-     CONST char *version;	/* Version string for package. */
-     ClientData clientData;     /* clientdata for this package (normally
-				 * used for C callback function table) */
+    const char *name,		/* Name of package. */
+    const char *version,	/* Version string for package. */
+    ClientData clientData)	/* clientdata for this package (normally used
+				 * for C callback function table) */
 {
     Package *pkgPtr;
-#ifdef TCL_TIP268
-    char* pvi;
-    char* vi;
+    char *pvi, *vi;
     int res;
-#endif
 
     pkgPtr = FindPackage(interp, name);
     if (pkgPtr->version == NULL) {
@@ -151,12 +135,11 @@ Tcl_PkgProvideEx(interp, name, version, clientData)
 	pkgPtr->clientData = clientData;
 	return TCL_OK;
     }
-#ifndef TCL_TIP268
-    if (ComparePkgVersions(pkgPtr->version, version, (int *) NULL) == 0) {
-#else
-    if (CheckVersionAndConvert (interp, pkgPtr->version, &pvi, NULL) != TCL_OK) {
+
+    if (CheckVersionAndConvert(interp, pkgPtr->version, &pvi,
+	    NULL) != TCL_OK) {
 	return TCL_ERROR;
-    } else if (CheckVersionAndConvert (interp, version, &vi, NULL) != TCL_OK) {
+    } else if (CheckVersionAndConvert(interp, version, &vi, NULL) != TCL_OK) {
 	ckfree(pvi);
 	return TCL_ERROR;
     }
@@ -166,14 +149,13 @@ Tcl_PkgProvideEx(interp, name, version, clientData)
     ckfree(vi);
 
     if (res == 0) {
-#endif
 	if (clientData != NULL) {
 	    pkgPtr->clientData = clientData;
 	}
 	return TCL_OK;
     }
     Tcl_AppendResult(interp, "conflicting versions provided for package \"",
-		     name, "\": ", pkgPtr->version, ", then ", version, (char *) NULL);
+	    name, "\": ", pkgPtr->version, ", then ", version, NULL);
     return TCL_ERROR;
 }
 
@@ -182,166 +164,134 @@ Tcl_PkgProvideEx(interp, name, version, clientData)
  *
  * Tcl_PkgRequire / Tcl_PkgRequireEx / Tcl_PkgRequireProc --
  *
- *	This procedure is called by code that depends on a particular
- *	version of a particular package.  If the package is not already
- *	provided in the interpreter, this procedure invokes a Tcl script
- *	to provide it.  If the package is already provided, this
- *	procedure makes sure that the caller's needs don't conflict with
- *	the version that is present.
+ *	This function is called by code that depends on a particular version
+ *	of a particular package. If the package is not already provided in the
+ *	interpreter, this function invokes a Tcl script to provide it. If the
+ *	package is already provided, this function makes sure that the
+ *	caller's needs don't conflict with the version that is present.
  *
  * Results:
- *	If successful, returns the version string for the currently
- *	provided version of the package, which may be different from
- *	the "version" argument.  If the caller's requirements
- *	cannot be met (e.g. the version requested conflicts with
- *	a currently provided version, or the required version cannot
- *	be found, or the script to provide the required version
- *	generates an error), NULL is returned and an error
- *	message is left in the interp's result.
+ *	If successful, returns the version string for the currently provided
+ *	version of the package, which may be different from the "version"
+ *	argument. If the caller's requirements cannot be met (e.g. the version
+ *	requested conflicts with a currently provided version, or the required
+ *	version cannot be found, or the script to provide the required version
+ *	generates an error), NULL is returned and an error message is left in
+ *	the interp's result.
  *
  * Side effects:
- *	The script from some previous "package ifneeded" command may
- *	be invoked to provide the package.
+ *	The script from some previous "package ifneeded" command may be
+ *	invoked to provide the package.
  *
  *----------------------------------------------------------------------
  */
 
-#ifndef TCL_TIP268
-/*
- * Empty definition for Stubs when TIP 268 is not activated.
- */
-int
-Tcl_PkgRequireProc(interp,name,reqc,reqv,clientDataPtr)
-     Tcl_Interp *interp;	/* Interpreter in which package is now
-				 * available. */
-     CONST char *name;		/* Name of desired package. */
-     int reqc;                  /* Requirements constraining the desired version. */
-     Tcl_Obj *CONST reqv[];     /* 0 means to use the latest version available. */
-     ClientData *clientDataPtr;
-{
-    return TCL_ERROR;
-}
-#endif
-
-CONST char *
-Tcl_PkgRequire(interp, name, version, exact)
-    Tcl_Interp *interp;	        /* Interpreter in which package is now
+const char *
+Tcl_PkgRequire(
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     CONST char *name;		/* Name of desired package. */
-     CONST char *version;	/* Version string for desired version; NULL
+    const char *name,		/* Name of desired package. */
+    const char *version,	/* Version string for desired version; NULL
 				 * means use the latest version available. */
-     int exact;			/* Non-zero means that only the particular
+    int exact)			/* Non-zero means that only the particular
 				 * version given is acceptable. Zero means use
 				 * the latest compatible version. */
 {
-    return Tcl_PkgRequireEx(interp, name, version, exact, (ClientData *) NULL);
+    return Tcl_PkgRequireEx(interp, name, version, exact, NULL);
 }
 
-CONST char *
-Tcl_PkgRequireEx(interp, name, version, exact, clientDataPtr)
-     Tcl_Interp *interp;	/* Interpreter in which package is now
-				 * available. */
-     CONST char *name;		/* Name of desired package. */
-     CONST char *version;	/* Version string for desired version;
-				 * NULL means use the latest version
+const char *
+Tcl_PkgRequireEx(
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     int exact;			/* Non-zero means that only the particular
-				 * version given is acceptable. Zero means
-				 * use the latest compatible version. */
-     ClientData *clientDataPtr;	/* Used to return the client data for this
-				 * package. If it is NULL then the client
-				 * data is not returned. This is unchanged
-				 * if this call fails for any reason. */
+    const char *name,		/* Name of desired package. */
+    const char *version,	/* Version string for desired version; NULL
+				 * means use the latest version available. */
+    int exact,			/* Non-zero means that only the particular
+				 * version given is acceptable. Zero means use
+				 * the latest compatible version. */
+    ClientData *clientDataPtr)	/* Used to return the client data for this
+				 * package. If it is NULL then the client data
+				 * is not returned. This is unchanged if this
+				 * call fails for any reason. */
 {
-#ifndef TCL_TIP268
-    Package *pkgPtr;
-    PkgAvail *availPtr, *bestPtr;
-    char *script;
-    int code, satisfies, result, pass;
-    Tcl_DString command;
-#else
     Tcl_Obj *ov;
-    CONST char *result = NULL;
-#endif
+    const char *result = NULL;
 
     /*
      * If an attempt is being made to load this into a standalone executable
-     * on a platform where backlinking is not supported then this must be
-     * a shared version of Tcl (Otherwise the load would have failed).
-     * Detect this situation by checking that this library has been correctly
+     * on a platform where backlinking is not supported then this must be a
+     * shared version of Tcl (Otherwise the load would have failed). Detect
+     * this situation by checking that this library has been correctly
      * initialised. If it has not been then return immediately as nothing will
      * work.
      */
-    
-    if (tclEmptyStringRep == NULL) {
 
+    if (tclEmptyStringRep == NULL) {
 	/*
 	 * OK, so what's going on here?
 	 *
-	 * First, what are we doing?  We are performing a check on behalf of
-	 * one particular caller, Tcl_InitStubs().  When a package is
-	 * stub-enabled, it is statically linked to libtclstub.a, which
-	 * contains a copy of Tcl_InitStubs().  When a stub-enabled package
-	 * is loaded, its *_Init() function is supposed to call
-	 * Tcl_InitStubs() before calling any other functions in the Tcl
-	 * library.  The first Tcl function called by Tcl_InitStubs() through
-	 * the stub table is Tcl_PkgRequireEx(), so this code right here is
-	 * the first code that is part of the original Tcl library in the
-	 * executable that gets executed on behalf of a newly loaded
-	 * stub-enabled package.
+	 * First, what are we doing? We are performing a check on behalf of
+	 * one particular caller, Tcl_InitStubs(). When a package is stub-
+	 * enabled, it is statically linked to libtclstub.a, which contains a
+	 * copy of Tcl_InitStubs(). When a stub-enabled package is loaded, its
+	 * *_Init() function is supposed to call Tcl_InitStubs() before
+	 * calling any other functions in the Tcl library. The first Tcl
+	 * function called by Tcl_InitStubs() through the stub table is
+	 * Tcl_PkgRequireEx(), so this code right here is the first code that
+	 * is part of the original Tcl library in the executable that gets
+	 * executed on behalf of a newly loaded stub-enabled package.
 	 *
 	 * One easy error for the developer/builder of a stub-enabled package
 	 * to make is to forget to define USE_TCL_STUBS when compiling the
-	 * package.  When that happens, the package will contain symbols
-	 * that are references to the Tcl library, rather than function
-	 * pointers referencing the stub table.  On platforms that lack
-	 * backlinking, those unresolved references may cause the loading
-	 * of the package to also load a second copy of the Tcl library,
-	 * leading to all kinds of trouble.  We would like to catch that
-	 * error and report a useful message back to the user.  That's
-	 * what we're doing.
+	 * package. When that happens, the package will contain symbols that
+	 * are references to the Tcl library, rather than function pointers
+	 * referencing the stub table. On platforms that lack backlinking,
+	 * those unresolved references may cause the loading of the package to
+	 * also load a second copy of the Tcl library, leading to all kinds of
+	 * trouble. We would like to catch that error and report a useful
+	 * message back to the user. That's what we're doing.
 	 *
-	 * Second, how does this work?  If we reach this point, then the
-	 * global variable tclEmptyStringRep has the value NULL.  Compare
-	 * that with the definition of tclEmptyStringRep near the top of
-	 * the file generic/tclObj.c.  It clearly should not have the value
-	 * NULL; it should point to the char tclEmptyString.  If we see it
-	 * having the value NULL, then somehow we are seeing a Tcl library
-	 * that isn't completely initialized, and that's an indicator for the
-	 * error condition described above.  (Further explanation is welcome.)
+	 * Second, how does this work? If we reach this point, then the global
+	 * variable tclEmptyStringRep has the value NULL. Compare that with
+	 * the definition of tclEmptyStringRep near the top of the file
+	 * generic/tclObj.c. It clearly should not have the value NULL; it
+	 * should point to the char tclEmptyString. If we see it having the
+	 * value NULL, then somehow we are seeing a Tcl library that isn't
+	 * completely initialized, and that's an indicator for the error
+	 * condition described above. (Further explanation is welcome.)
 	 *
-	 * Third, so what do we do about it?  This situation indicates
-	 * the package we just loaded wasn't properly compiled to be
-	 * stub-enabled, yet it thinks it is stub-enabled (it called
-	 * Tcl_InitStubs()).  We want to report that the package just
-	 * loaded is broken, so we want to place an error message in
-	 * the interpreter result and return NULL to indicate failure
-	 * to Tcl_InitStubs() so that it will also fail.  (Further
-	 * explanation why we don't want to Tcl_Panic() is welcome.
+	 * Third, so what do we do about it? This situation indicates the
+	 * package we just loaded wasn't properly compiled to be stub-enabled,
+	 * yet it thinks it is stub-enabled (it called Tcl_InitStubs()). We
+	 * want to report that the package just loaded is broken, so we want
+	 * to place an error message in the interpreter result and return NULL
+	 * to indicate failure to Tcl_InitStubs() so that it will also fail.
+	 * (Further explanation why we don't want to Tcl_Panic() is welcome.
 	 * After all, two Tcl libraries can't be a good thing!)
 	 *
-	 * Trouble is that's going to be tricky.  We're now using a Tcl
-	 * library that's not fully initialized.  In particular, it 
-	 * doesn't have a proper value for tclEmptyStringRep.  The
-	 * Tcl_Obj system heavily depends on the value of tclEmptyStringRep
-	 * and all of Tcl depends (increasingly) on the Tcl_Obj system, we
-	 * need to correct that flaw before making the calls to set the 
-	 * interpreter result to the error message.  That's the only flaw
-	 * corrected; other problems with initialization of the Tcl library
-	 * are not remedied, so be very careful about adding any other calls
-	 * here without checking how they behave when initialization is
-	 * incomplete.
+	 * Trouble is that's going to be tricky. We're now using a Tcl library
+	 * that's not fully initialized. In particular, it doesn't have a
+	 * proper value for tclEmptyStringRep. The Tcl_Obj system heavily
+	 * depends on the value of tclEmptyStringRep and all of Tcl depends
+	 * (increasingly) on the Tcl_Obj system, we need to correct that flaw
+	 * before making the calls to set the interpreter result to the error
+	 * message. That's the only flaw corrected; other problems with
+	 * initialization of the Tcl library are not remedied, so be very
+	 * careful about adding any other calls here without checking how they
+	 * behave when initialization is incomplete.
 	 */
 
 	tclEmptyStringRep = &tclEmptyString;
-        Tcl_AppendResult(interp, "Cannot load package \"", name, 
-			 "\" in standalone executable: This package is not ",
-			 "compiled with stub support", NULL);
-        return NULL;
+	Tcl_AppendResult(interp, "Cannot load package \"", name,
+		"\" in standalone executable: This package is not "
+		"compiled with stub support", NULL);
+	return NULL;
     }
 
-#ifdef TCL_TIP268
-    /* Translate between old and new API, and defer to the new function. */
+    /*
+     * Translate between old and new API, and defer to the new function.
+     */
 
     if (version == NULL) {
 	result = PkgRequireCore(interp, name, 0, NULL, clientDataPtr);
@@ -354,9 +304,9 @@ Tcl_PkgRequireEx(interp, name, version, exact, clientDataPtr)
 	if (exact) {
 	    Tcl_AppendStringsToObj(ov, "-", version, NULL);
 	}
-	Tcl_IncrRefCount (ov);
+	Tcl_IncrRefCount(ov);
 	result = PkgRequireCore(interp, name, 1, &ov, clientDataPtr);
-	Tcl_DecrRefCount (ov);
+	TclDecrRefCount(ov);
     }
 
     return result;
@@ -364,16 +314,16 @@ Tcl_PkgRequireEx(interp, name, version, exact, clientDataPtr)
 
 int
 Tcl_PkgRequireProc(
-     Tcl_Interp *interp,	/* Interpreter in which package is now
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     CONST char *name,		/* Name of desired package. */
-     int reqc,                  /* Requirements constraining the desired
+    const char *name,		/* Name of desired package. */
+    int reqc,			/* Requirements constraining the desired
 				 * version. */
-     Tcl_Obj *CONST reqv[],     /* 0 means to use the latest version
+    Tcl_Obj *const reqv[],	/* 0 means to use the latest version
 				 * available. */
-     ClientData *clientDataPtr)
+    ClientData *clientDataPtr)
 {
-    CONST char *result =
+    const char *result =
 	    PkgRequireCore(interp, name, reqc, reqv, clientDataPtr);
 
     if (result == NULL) {
@@ -383,28 +333,30 @@ Tcl_PkgRequireProc(
     return TCL_OK;
 }
 
-static CONST char *
+static const char *
 PkgRequireCore(
-     Tcl_Interp *interp,	/* Interpreter in which package is now
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     CONST char *name,		/* Name of desired package. */
-     int reqc,                  /* Requirements constraining the desired
+    const char *name,		/* Name of desired package. */
+    int reqc,			/* Requirements constraining the desired
 				 * version. */
-     Tcl_Obj *CONST reqv[],     /* 0 means to use the latest version
+    Tcl_Obj *const reqv[],	/* 0 means to use the latest version
 				 * available. */
-     ClientData *clientDataPtr)
+    ClientData *clientDataPtr)
 {
     Interp *iPtr = (Interp *) interp;
     Package *pkgPtr;
     PkgAvail *availPtr, *bestPtr, *bestStablePtr;
-    char *availVersion, *bestVersion;	/* Internal rep. of versions */
-    int availStable;
-    char *script;
-    int code, satisfies, pass;
+    char *availVersion, *bestVersion;
+				/* Internal rep. of versions */
+    int availStable, code, satisfies, pass;
+    char *script, *pkgVersionI;
     Tcl_DString command;
-    char* pkgVersionI;
 
-#endif
+    if (TCL_OK != CheckAllRequirements(interp, reqc, reqv)) {
+	return NULL;
+    }
+
     /*
      * It can take up to three passes to find the package: one pass to run the
      * "package unknown" script, one to run the "package ifneeded" script for
@@ -412,45 +364,32 @@ PkgRequireCore(
      * the "package ifneeded" script.
      */
 
-    for (pass = 1; ; pass++) {
+    for (pass=1 ;; pass++) {
 	pkgPtr = FindPackage(interp, name);
 	if (pkgPtr->version != NULL) {
 	    break;
 	}
 
-	/* 
-	 * Check whether we're already attempting to load some version
-	 * of this package (circular dependency detection).
+	/*
+	 * Check whether we're already attempting to load some version of this
+	 * package (circular dependency detection).
 	 */
 
 	if (pkgPtr->clientData != NULL) {
-	    Tcl_AppendResult(interp, "circular package dependency: ",
+	    Tcl_AppendResult(interp, "circular package dependency: "
 		    "attempt to provide ", name, " ",
-		    (char *)(pkgPtr->clientData), " requires ", name, NULL);
-#ifndef TCL_TIP268
-	    if (version != NULL) {
-		Tcl_AppendResult(interp, " ", version, NULL);
-	    }
-#else
-	    AddRequirementsToResult (interp, reqc, reqv);
-#endif
+		    (char *) pkgPtr->clientData, " requires ", name, NULL);
+	    AddRequirementsToResult(interp, reqc, reqv);
 	    return NULL;
 	}
 
 	/*
 	 * The package isn't yet present. Search the list of available
-	 * versions and invoke the script for the best available version.
-	 *
-	 * For TIP 268 we are actually locating the best, and the best stable
-	 * version.  One of them is then chosen based on the selection mode.
+	 * versions and invoke the script for the best available version. We
+	 * are actually locating the best, and the best stable version. One of
+	 * them is then chosen based on the selection mode.
 	 */
-#ifndef TCL_TIP268    
-	bestPtr = NULL;
-	for (availPtr = pkgPtr->availPtr; availPtr != NULL;
-		availPtr = availPtr->nextPtr) {
-	    if ((bestPtr != NULL) && (ComparePkgVersions(availPtr->version,
-		    bestPtr->version, (int *) NULL) <= 0)) {
-#else
+
 	bestPtr = NULL;
 	bestStablePtr = NULL;
 	bestVersion = NULL;
@@ -459,34 +398,32 @@ PkgRequireCore(
 		availPtr = availPtr->nextPtr) {
 	    if (CheckVersionAndConvert(interp, availPtr->version,
 		    &availVersion, &availStable) != TCL_OK) {
-		/* The provided version number has invalid syntax. This
+		/*
+		 * The provided version number has invalid syntax. This
 		 * should not happen. This should have been caught by the
 		 * 'package ifneeded' registering the package.
 		 */
-#endif
+
 		continue;
 	    }
-#ifndef TCL_TIP268
-	    if (version != NULL) {
-		result = ComparePkgVersions(availPtr->version, version,
-			&satisfies);
-		if ((result != 0) && exact) {
-#else
+
 	    if (bestPtr != NULL) {
-		int res = CompareVersions (availVersion, bestVersion, NULL);
+		int res = CompareVersions(availVersion, bestVersion, NULL);
+
+		/*
+		 * Note: Use internal reps!
+		 */
 
-		/* Note: Use internal reps! */
 		if (res <= 0) {
 		    /*
 		     * The version of the package sought is not as good as the
 		     * currently selected version. Ignore it.
 		     */
+
 		    ckfree(availVersion);
 		    availVersion = NULL;
-#endif
 		    continue;
 		}
-#ifdef TCL_TIP268
 	    }
 
 	    /* We have found a version which is better than our max. */
@@ -495,24 +432,19 @@ PkgRequireCore(
 		/* Check satisfaction of requirements. */
 
 		satisfies = SomeRequirementSatisfied(availVersion, reqc, reqv);
-#endif
 		if (!satisfies) {
-#ifdef TCL_TIP268
 		    ckfree(availVersion);
 		    availVersion = NULL;
-#endif
 		    continue;
 		}
 	    }
 
 	    bestPtr = availPtr;
 
-#ifdef TCL_TIP268
 	    if (bestVersion != NULL) {
 		ckfree(bestVersion);
 	    }
 	    bestVersion = availVersion;
-	    availVersion = NULL;
 
 	    /*
 	     * If this new best version is stable then it also has to be
@@ -525,10 +457,11 @@ PkgRequireCore(
 	}
 
 	if (bestVersion != NULL) {
-	   ckfree(bestVersion);
+	    ckfree(bestVersion);
 	}
 
-	/* Now choose a version among the two best. For 'latest' we simply
+	/*
+	 * Now choose a version among the two best. For 'latest' we simply
 	 * take (actually keep) the best. For 'stable' we take the best
 	 * stable, if there is any, or the best if there is nothing stable.
 	 */
@@ -536,8 +469,8 @@ PkgRequireCore(
 	if ((iPtr->packagePrefer == PKG_PREFER_STABLE)
 		&& (bestStablePtr != NULL)) {
 	    bestPtr = bestStablePtr;
-#endif
 	}
+
 	if (bestPtr != NULL) {
 	    /*
 	     * We found an ifneeded script for the package. Be careful while
@@ -546,7 +479,7 @@ PkgRequireCore(
 	     * will still exist when the script completes.
 	     */
 
-	    CONST char *versionToProvide = bestPtr->version;
+	    const char *versionToProvide = bestPtr->version;
 	    script = bestPtr->script;
 
 	    pkgPtr->clientData = (ClientData) versionToProvide;
@@ -557,60 +490,15 @@ PkgRequireCore(
 
 	    pkgPtr = FindPackage(interp, name);
 	    if (code == TCL_OK) {
-#ifdef TCL_TIP268
 		Tcl_ResetResult(interp);
-#endif
 		if (pkgPtr->version == NULL) {
-#ifndef TCL_TIP268
-		    Tcl_ResetResult(interp);
-#endif
 		    code = TCL_ERROR;
 		    Tcl_AppendResult(interp, "attempt to provide package ",
 			    name, " ", versionToProvide,
 			    " failed: no version of package ", name,
 			    " provided", NULL);
-#ifndef TCL_TIP268
-		} else if (0 != ComparePkgVersions(
-			pkgPtr->version, versionToProvide, NULL)) {
-		    /* At this point, it is clear that a prior
-		     * [package ifneeded] command lied to us.  It said
-		     * that to get a particular version of a particular
-		     * package, we needed to evaluate a particular script.
-		     * However, we evaluated that script and got a different
-		     * version than we were told.  This is an error, and we
-		     * ought to report it.
-		     *
-		     * However, we've been letting this type of error slide
-		     * for a long time, and as a result, a lot of packages
-		     * suffer from them.
-		     *
-		     * It's a bit too harsh to make a large number of
-		     * existing packages start failing by releasing a
-		     * new patch release, so we forgive this type of error
-		     * for the rest of the Tcl 8.4 series.
-		     *
-		     * We considered reporting a warning, but in practice
-		     * even that appears too harsh a change for a patch release.
-		     *
-		     * We limit the error reporting to only
-		     * the situation where a broken ifneeded script leads
-		     * to a failure to satisfy the requirement.
-		     */
-		    if (version) {
-			result = ComparePkgVersions(
-				pkgPtr->version, version, &satisfies);
-			if (result && (exact || !satisfies)) {
-			    Tcl_ResetResult(interp);
-			    code = TCL_ERROR;
-			    Tcl_AppendResult(interp,
-				    "attempt to provide package ", name, " ",
-				    versionToProvide, " failed: package ",
-				    name, " ", pkgPtr->version,
-				    " provided instead", NULL);
-#else
 		} else {
 		    char *pvi, *vi;
-		    int res;
 
 		    if (CheckVersionAndConvert(interp, pkgPtr->version, &pvi,
 			    NULL) != TCL_OK) {
@@ -620,66 +508,36 @@ PkgRequireCore(
 			ckfree(pvi);
 			code = TCL_ERROR;
 		    } else {
-			res = CompareVersions(pvi, vi, NULL);
-			ckfree(vi);
+			int res = CompareVersions(pvi, vi, NULL);
 
+			ckfree(pvi);
+			ckfree(vi);
 			if (res != 0) {
-			    /* At this point, it is clear that a prior
-			     * [package ifneeded] command lied to us.  It said
-			     * that to get a particular version of a particular
-			     * package, we needed to evaluate a particular
-			     * script.  However, we evaluated that script and
-			     * got a different version than we were told.
-			     * This is an error, and we ought to report it.
-			     *
-			     * However, we've been letting this type of error
-			     * slide for a long time, and as a result, a lot
-			     * of packages suffer from them.
-			     *
-			     * It's a bit too harsh to make a large number of
-			     * existing packages start failing by releasing a
-			     * new patch release, so we forgive this type of
-			     * error for the rest of the Tcl 8.4 series.
-			     *
-			     * We considered reporting a warning, but in
-			     * practice even that appears too harsh a change
-			     * for a patch release.
-			     *
-			     * We limit the error reporting to only the
-			     * situation where a broken ifneeded script leads
-			     * to a failure to satisfy the requirement.
-			     */
-
-			    if (reqc > 0) {
-			        satisfies = SomeRequirementSatisfied(pvi,
-					reqc, reqv);
-				if (!satisfies) {
-				    code = TCL_ERROR;
-				    Tcl_AppendResult(interp,
-					    "attempt to provide package ",
-					    name, " ", versionToProvide,
-					    " failed: package ", name, " ",
-					    pkgPtr->version,
-					    " provided instead", NULL);
-				}
-			    }
-#endif
+			    code = TCL_ERROR;
+			    Tcl_AppendResult(interp,
+				    "attempt to provide package ", name, " ",
+				    versionToProvide, " failed: package ",
+				    name, " ", pkgPtr->version,
+				    " provided instead", NULL);
 			}
-#ifdef TCL_TIP268
-			ckfree(pvi);
-#endif
 		    }
 		}
 	    } else if (code != TCL_ERROR) {
 		Tcl_Obj *codePtr = Tcl_NewIntObj(code);
+
 		Tcl_ResetResult(interp);
-		Tcl_AppendResult(interp, "attempt to provide package ",
-			name, " ", versionToProvide, " failed: ",
-			"bad return code: ", Tcl_GetString(codePtr), NULL);
-		Tcl_DecrRefCount(codePtr);
+		Tcl_AppendResult(interp, "attempt to provide package ", name,
+			" ", versionToProvide, " failed: bad return code: ",
+			TclGetString(codePtr), NULL);
+		TclDecrRefCount(codePtr);
 		code = TCL_ERROR;
 	    }
 
+	    if (code == TCL_ERROR) {
+		Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+			"\n    (\"package ifneeded %s %s\" script)",
+			name, versionToProvide));
+	    }
 	    Tcl_Release((ClientData) versionToProvide);
 
 	    if (code != TCL_OK) {
@@ -688,12 +546,12 @@ PkgRequireCore(
 		 * package wasn't loaded properly, so the package system
 		 * should not remember an improper load.
 		 *
-		 * This is consistent with our returning NULL.  If we're not
+		 * This is consistent with our returning NULL. If we're not
 		 * willing to tell our caller we got a particular version, we
 		 * shouldn't store that version for telling future callers
 		 * either.
 		 */
-		Tcl_AddErrorInfo(interp, "\n    (\"package ifneeded\" script)");
+
 		if (pkgPtr->version != NULL) {
 		    ckfree(pkgPtr->version);
 		    pkgPtr->version = NULL;
@@ -720,30 +578,23 @@ PkgRequireCore(
 	    Tcl_DStringInit(&command);
 	    Tcl_DStringAppend(&command, script, -1);
 	    Tcl_DStringAppendElement(&command, name);
-#ifndef TCL_TIP268
-	    Tcl_DStringAppend(&command, " ", 1);
-	    Tcl_DStringAppend(&command, (version != NULL) ? version : "{}",
-		    -1);
-	    if (exact) {
-		Tcl_DStringAppend(&command, " -exact", 7);
-	    }
-#else
 	    AddRequirementsToDString(&command, reqc, reqv);
-#endif
+
 	    code = Tcl_EvalEx(interp, Tcl_DStringValue(&command),
-			      Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
+		    Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
 	    Tcl_DStringFree(&command);
 
 	    if ((code != TCL_OK) && (code != TCL_ERROR)) {
 		Tcl_Obj *codePtr = Tcl_NewIntObj(code);
 		Tcl_ResetResult(interp);
 		Tcl_AppendResult(interp, "bad return code: ",
-			Tcl_GetString(codePtr), NULL);
+			TclGetString(codePtr), NULL);
 		Tcl_DecrRefCount(codePtr);
 		code = TCL_ERROR;
 	    }
 	    if (code == TCL_ERROR) {
-		Tcl_AddErrorInfo(interp, "\n    (\"package unknown\" script)");
+		Tcl_AddErrorInfo(interp,
+			"\n    (\"package unknown\" script)");
 		return NULL;
 	    }
 	    Tcl_ResetResult(interp);
@@ -751,14 +602,8 @@ PkgRequireCore(
     }
 
     if (pkgPtr->version == NULL) {
-	Tcl_AppendResult(interp, "can't find package ", name, (char *) NULL);
-#ifndef TCL_TIP268
-	if (version != NULL) {
-	    Tcl_AppendResult(interp, " ", version, (char *) NULL);
-	}
-#else
+	Tcl_AppendResult(interp, "can't find package ", name, NULL);
 	AddRequirementsToResult(interp, reqc, reqv);
-#endif
 	return NULL;
     }
 
@@ -767,13 +612,6 @@ PkgRequireCore(
      * provided version meets the current requirements.
      */
 
-#ifndef TCL_TIP268
-    if (version == NULL) {
-        if (clientDataPtr) {
-	    *clientDataPtr = pkgPtr->clientData;
-	}
-	return pkgPtr->version;
-#else
     if (reqc == 0) {
 	satisfies = 1;
     } else {
@@ -781,27 +619,18 @@ PkgRequireCore(
 	satisfies = SomeRequirementSatisfied(pkgVersionI, reqc, reqv);
 
 	ckfree(pkgVersionI);
-#endif
     }
-#ifndef TCL_TIP268
-    result = ComparePkgVersions(pkgPtr->version, version, &satisfies);
-    if ((satisfies && !exact) || (result == 0)) {
-#else
+
     if (satisfies) {
-#endif
 	if (clientDataPtr) {
 	    *clientDataPtr = pkgPtr->clientData;
 	}
 	return pkgPtr->version;
     }
+
     Tcl_AppendResult(interp, "version conflict for package \"", name,
-	    "\": have ", pkgPtr->version,
-#ifndef TCL_TIP268
-	    ", need ", version, (char *) NULL);
-#else
-	    ", need", (char*) NULL);
-    AddRequirementsToResult (interp, reqc, reqv);
-#endif
+	    "\": have ", pkgPtr->version, ", need", NULL);
+    AddRequirementsToResult(interp, reqc, reqv);
     return NULL;
 }
 
@@ -810,16 +639,15 @@ PkgRequireCore(
  *
  * Tcl_PkgPresent / Tcl_PkgPresentEx --
  *
- *	Checks to see whether the specified package is present. If it
- *	is not then no additional action is taken.
+ *	Checks to see whether the specified package is present. If it is not
+ *	then no additional action is taken.
  *
  * Results:
- *	If successful, returns the version string for the currently
- *	provided version of the package, which may be different from
- *	the "version" argument.  If the caller's requirements
- *	cannot be met (e.g. the version requested conflicts with
- *	a currently provided version), NULL is returned and an error
- *	message is left in interp->result.
+ *	If successful, returns the version string for the currently provided
+ *	version of the package, which may be different from the "version"
+ *	argument. If the caller's requirements cannot be met (e.g. the version
+ *	requested conflicts with a currently provided version), NULL is
+ *	returned and an error message is left in interp->result.
  *
  * Side effects:
  *	None.
@@ -827,36 +655,34 @@ PkgRequireCore(
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_PkgPresent(interp, name, version, exact)
-     Tcl_Interp *interp;	/* Interpreter in which package is now
-				 * available. */
-     CONST char *name;		/* Name of desired package. */
-     CONST char *version;	/* Version string for desired version;
-				 * NULL means use the latest version
+const char *
+Tcl_PkgPresent(
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     int exact;			/* Non-zero means that only the particular
-				 * version given is acceptable. Zero means
-				 * use the latest compatible version. */
+    const char *name,		/* Name of desired package. */
+    const char *version,	/* Version string for desired version; NULL
+				 * means use the latest version available. */
+    int exact)			/* Non-zero means that only the particular
+				 * version given is acceptable. Zero means use
+				 * the latest compatible version. */
 {
-    return Tcl_PkgPresentEx(interp, name, version, exact, (ClientData *) NULL);
+    return Tcl_PkgPresentEx(interp, name, version, exact, NULL);
 }
 
-CONST char *
-Tcl_PkgPresentEx(interp, name, version, exact, clientDataPtr)
-     Tcl_Interp *interp;	/* Interpreter in which package is now
-				 * available. */
-     CONST char *name;		/* Name of desired package. */
-     CONST char *version;	/* Version string for desired version;
-				 * NULL means use the latest version
+const char *
+Tcl_PkgPresentEx(
+    Tcl_Interp *interp,		/* Interpreter in which package is now
 				 * available. */
-     int exact;			/* Non-zero means that only the particular
-				 * version given is acceptable. Zero means
-				 * use the latest compatible version. */
-     ClientData *clientDataPtr;	/* Used to return the client data for this
-				 * package. If it is NULL then the client
-				 * data is not returned. This is unchanged
-				 * if this call fails for any reason. */
+    const char *name,		/* Name of desired package. */
+    const char *version,	/* Version string for desired version; NULL
+				 * means use the latest version available. */
+    int exact,			/* Non-zero means that only the particular
+				 * version given is acceptable. Zero means use
+				 * the latest compatible version. */
+    ClientData *clientDataPtr)	/* Used to return the client data for this
+				 * package. If it is NULL then the client data
+				 * is not returned. This is unchanged if this
+				 * call fails for any reason. */
 {
     Interp *iPtr = (Interp *) interp;
     Tcl_HashEntry *hPtr;
@@ -864,17 +690,22 @@ Tcl_PkgPresentEx(interp, name, version, exact, clientDataPtr)
 
     hPtr = Tcl_FindHashEntry(&iPtr->packageTable, name);
     if (hPtr) {
-	pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+	pkgPtr = Tcl_GetHashValue(hPtr);
 	if (pkgPtr->version != NULL) {
-	    
 	    /*
-	     * At this point we know that the package is present.  Make sure
+	     * At this point we know that the package is present. Make sure
 	     * that the provided version meets the current requirement by
 	     * calling Tcl_PkgRequireEx() to check for us.
 	     */
 
-	    return Tcl_PkgRequireEx(interp, name, version, exact,
-		    clientDataPtr);
+	    const char *foundVersion = Tcl_PkgRequireEx(interp, name, version,
+		    exact, clientDataPtr);
+
+	    if (foundVersion == NULL) {
+		Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "PACKAGE", name,
+			NULL);
+	    }
+	    return foundVersion;
 	}
     }
 
@@ -884,6 +715,7 @@ Tcl_PkgPresentEx(interp, name, version, exact, clientDataPtr)
     } else {
 	Tcl_AppendResult(interp, "package ", name, " is not present", NULL);
     }
+    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "PACKAGE", name, NULL);
     return NULL;
 }
 
@@ -892,8 +724,8 @@ Tcl_PkgPresentEx(interp, name, version, exact, clientDataPtr)
  *
  * Tcl_PackageObjCmd --
  *
- *	This procedure is invoked to process the "package" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "package" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -904,29 +736,23 @@ Tcl_PkgPresentEx(interp, name, version, exact, clientDataPtr)
  *----------------------------------------------------------------------
  */
 
-/* ARGSUSED */
+	/* ARGSUSED */
 int
-Tcl_PackageObjCmd(dummy, interp, objc, objv)
-     ClientData dummy;		/* Not used. */
-     Tcl_Interp *interp;	/* Current interpreter. */
-     int objc;			/* Number of arguments. */
-     Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_PackageObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    static CONST char *pkgOptions[] = {
-	"forget", "ifneeded", "names",
-#ifdef TCL_TIP268
-	"prefer",
-#endif
-	"present", "provide", "require", "unknown", "vcompare",
-	"versions", "vsatisfies", (char *) NULL
+    static const char *pkgOptions[] = {
+	"forget",  "ifneeded", "names",   "prefer",   "present",
+	"provide", "require",  "unknown", "vcompare", "versions",
+	"vsatisfies", NULL
     };
     enum pkgOptions {
-	PKG_FORGET, PKG_IFNEEDED, PKG_NAMES,
-#ifdef TCL_TIP268
-	PKG_PREFER,
-#endif
-	PKG_PRESENT, PKG_PROVIDE, PKG_REQUIRE, PKG_UNKNOWN, PKG_VCOMPARE,
-	PKG_VERSIONS, PKG_VSATISFIES
+	PKG_FORGET,  PKG_IFNEEDED, PKG_NAMES,   PKG_PREFER,   PKG_PRESENT,
+	PKG_PROVIDE, PKG_REQUIRE,  PKG_UNKNOWN, PKG_VCOMPARE, PKG_VERSIONS,
+	PKG_VSATISFIES
     };
     Interp *iPtr = (Interp *) interp;
     int optionIndex, exact, i, satisfies;
@@ -935,32 +761,29 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
     Tcl_HashEntry *hPtr;
     Tcl_HashSearch search;
     Tcl_HashTable *tablePtr;
-    CONST char *version;
-    char *argv2, *argv3, *argv4;
-#ifdef TCL_TIP268
-    char* iva = NULL;
-    char* ivb = NULL;
-#endif
+    const char *version;
+    char *argv2, *argv3, *argv4, *iva = NULL, *ivb = NULL;
 
     if (objc < 2) {
-        Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
+	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
 	return TCL_ERROR;
     }
 
     if (Tcl_GetIndexFromObj(interp, objv[1], pkgOptions, "option", 0,
-			    &optionIndex) != TCL_OK) {
+	    &optionIndex) != TCL_OK) {
 	return TCL_ERROR;
     }
     switch ((enum pkgOptions) optionIndex) {
     case PKG_FORGET: {
 	char *keyString;
+
 	for (i = 2; i < objc; i++) {
-	    keyString = Tcl_GetString(objv[i]);
+	    keyString = TclGetString(objv[i]);
 	    hPtr = Tcl_FindHashEntry(&iPtr->packageTable, keyString);
 	    if (hPtr == NULL) {
-		continue;	
+		continue;
 	    }
-	    pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+	    pkgPtr = Tcl_GetHashValue(hPtr);
 	    Tcl_DeleteHashEntry(hPtr);
 	    if (pkgPtr->version != NULL) {
 		ckfree(pkgPtr->version);
@@ -977,43 +800,32 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	break;
     }
     case PKG_IFNEEDED: {
-	int length;
-#ifdef TCL_TIP268
-	int res;
+	int length, res;
 	char *argv3i, *avi;
-#endif
 
 	if ((objc != 4) && (objc != 5)) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "package version ?script?");
 	    return TCL_ERROR;
 	}
-	argv3 = Tcl_GetString(objv[3]);
-#ifdef TCL_TIP268
+	argv3 = TclGetString(objv[3]);
 	if (CheckVersionAndConvert(interp, argv3, &argv3i, NULL) != TCL_OK) {
-#else
-	if (CheckVersion(interp, argv3) != TCL_OK) {
-#endif
 	    return TCL_ERROR;
 	}
-	argv2 = Tcl_GetString(objv[2]);
+	argv2 = TclGetString(objv[2]);
 	if (objc == 4) {
 	    hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
 	    if (hPtr == NULL) {
-#ifdef TCL_TIP268
 		ckfree(argv3i);
-#endif
 		return TCL_OK;
 	    }
-	    pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+	    pkgPtr = Tcl_GetHashValue(hPtr);
 	} else {
 	    pkgPtr = FindPackage(interp, argv2);
 	}
 	argv3 = Tcl_GetStringFromObj(objv[3], &length);
 
 	for (availPtr = pkgPtr->availPtr, prevPtr = NULL; availPtr != NULL;
-	     prevPtr = availPtr, availPtr = availPtr->nextPtr) {
-
-#ifdef TCL_TIP268
+		prevPtr = availPtr, availPtr = availPtr->nextPtr) {
 	    if (CheckVersionAndConvert(interp, availPtr->version, &avi,
 		    NULL) != TCL_OK) {
 		ckfree(argv3i);
@@ -1024,14 +836,8 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	    ckfree(avi);
 
 	    if (res == 0){
-#else
-	    if (ComparePkgVersions(availPtr->version, argv3, (int *) NULL)
-		    == 0) {
-#endif
 		if (objc == 4) {
-#ifdef TCL_TIP268
 		    ckfree(argv3i);
-#endif
 		    Tcl_SetResult(interp, availPtr->script, TCL_VOLATILE);
 		    return TCL_OK;
 		}
@@ -1039,9 +845,8 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 		break;
 	    }
 	}
-#ifdef TCL_TIP268
 	ckfree(argv3i);
-#endif
+
 	if (objc == 4) {
 	    return TCL_OK;
 	}
@@ -1061,27 +866,26 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	DupBlock(availPtr->script, argv4, (unsigned) length + 1);
 	break;
     }
-    case PKG_NAMES: {
+    case PKG_NAMES:
 	if (objc != 2) {
 	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
 	    return TCL_ERROR;
 	}
 	tablePtr = &iPtr->packageTable;
 	for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr != NULL;
-	     hPtr = Tcl_NextHashEntry(&search)) {
-	    pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+		hPtr = Tcl_NextHashEntry(&search)) {
+	    pkgPtr = Tcl_GetHashValue(hPtr);
 	    if ((pkgPtr->version != NULL) || (pkgPtr->availPtr != NULL)) {
 		Tcl_AppendElement(interp, Tcl_GetHashKey(tablePtr, hPtr));
 	    }
 	}
 	break;
-    }
     case PKG_PRESENT: {
-	CONST char *name;
+	const char *name;
 	if (objc < 3) {
 	    goto require;
 	}
-	argv2 = Tcl_GetString(objv[2]);
+	argv2 = TclGetString(objv[2]);
 	if ((argv2[0] == '-') && (strcmp(argv2, "-exact") == 0)) {
 	    if (objc != 5) {
 		goto requireSyntax;
@@ -1100,138 +904,98 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 		goto require;
 	    }
 	}
-#ifndef TCL_TIP268
-	version = NULL;
-	if (objc == (4 + exact)) {
-	    version =  Tcl_GetString(objv[3 + exact]);
-	    if (CheckVersion(interp, version) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	} else if ((objc != 3) || exact) {
-	    goto requireSyntax;
-	}
-#else
+
 	version = NULL;
 	if (exact) {
-	    version = Tcl_GetString(objv[4]);
-	    if (CheckVersionAndConvert(interp, version, NULL, NULL) != TCL_OK) {
+	    version = TclGetString(objv[4]);
+	    if (CheckVersionAndConvert(interp, version, NULL,
+		    NULL) != TCL_OK) {
 		return TCL_ERROR;
 	    }
 	} else {
 	    if (CheckAllRequirements(interp, objc-3, objv+3) != TCL_OK) {
 		return TCL_ERROR;
-	    } 
+	    }
 	    if ((objc > 3) && (CheckVersionAndConvert(interp,
 		    TclGetString(objv[3]), NULL, NULL) == TCL_OK)) {
 		version = TclGetString(objv[3]);
 	    }
 	}
-#endif
 	Tcl_PkgPresent(interp, name, version, exact);
 	return TCL_ERROR;
 	break;
     }
-    case PKG_PROVIDE: {
+    case PKG_PROVIDE:
 	if ((objc != 3) && (objc != 4)) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "package ?version?");
 	    return TCL_ERROR;
 	}
-	argv2 = Tcl_GetString(objv[2]);
+	argv2 = TclGetString(objv[2]);
 	if (objc == 3) {
 	    hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
 	    if (hPtr != NULL) {
-		pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+		pkgPtr = Tcl_GetHashValue(hPtr);
 		if (pkgPtr->version != NULL) {
 		    Tcl_SetResult(interp, pkgPtr->version, TCL_VOLATILE);
 		}
 	    }
 	    return TCL_OK;
 	}
-	argv3 = Tcl_GetString(objv[3]);
-#ifndef TCL_TIP268
-	if (CheckVersion(interp, argv3) != TCL_OK) {
-#else
+	argv3 = TclGetString(objv[3]);
 	if (CheckVersionAndConvert(interp, argv3, NULL, NULL) != TCL_OK) {
-#endif
 	    return TCL_ERROR;
 	}
 	return Tcl_PkgProvide(interp, argv2, argv3);
-    }
-    case PKG_REQUIRE: {
+    case PKG_REQUIRE:
     require:
 	if (objc < 3) {
 	requireSyntax:
-#ifndef TCL_TIP268
-	    Tcl_WrongNumArgs(interp, 2, objv, "?-exact? package ?version?");
-#else
 	    Tcl_WrongNumArgs(interp, 2, objv,
 		    "?-exact? package ?requirement...?");
-#endif
-	    return TCL_ERROR;
-	}
-#ifndef TCL_TIP268
-	argv2 = Tcl_GetString(objv[2]);
-	if ((argv2[0] == '-') && (strcmp(argv2, "-exact") == 0)) {
-	    exact = 1;
-	} else {
-	    exact = 0;
-	}
-	version = NULL;
-	if (objc == (4 + exact)) {
-	    version =  Tcl_GetString(objv[3 + exact]);
-	    if (CheckVersion(interp, version) != TCL_OK) {
-		return TCL_ERROR;
-	    }
-	} else if ((objc != 3) || exact) {
-	    goto requireSyntax;
-	}
-	if (exact) {
-	    argv3 =  Tcl_GetString(objv[3]);
-	    version = Tcl_PkgRequire(interp, argv3, version, exact);
-	} else {
-	    version = Tcl_PkgRequire(interp, argv2, version, exact);
-	}
-	if (version == NULL) {
 	    return TCL_ERROR;
 	}
-	Tcl_SetObjResult( interp, Tcl_NewStringObj( version, -1 ) );
-#else
+
 	version = NULL;
-	argv2 = Tcl_GetString(objv[2]);
+
+	argv2 = TclGetString(objv[2]);
 	if ((argv2[0] == '-') && (strcmp(argv2, "-exact") == 0)) {
-	    Tcl_Obj* ov;
+	    Tcl_Obj *ov;
 	    int res;
 
 	    if (objc != 5) {
 		goto requireSyntax;
 	    }
-	    version = Tcl_GetString(objv[4]);
-	    if (CheckVersionAndConvert(interp, version, NULL, NULL) != TCL_OK) {
+
+	    version = TclGetString(objv[4]);
+	    if (CheckVersionAndConvert(interp, version, NULL,
+		    NULL) != TCL_OK) {
 		return TCL_ERROR;
 	    }
 
-	    /* Create a new-style requirement for the exact version. */
+	    /*
+	     * Create a new-style requirement for the exact version.
+	     */
 
 	    ov = Tcl_NewStringObj(version, -1);
 	    Tcl_AppendStringsToObj(ov, "-", version, NULL);
 	    version = NULL;
-	    argv3   = Tcl_GetString(objv[3]);
+	    argv3 = TclGetString(objv[3]);
 
-	    Tcl_IncrRefCount (ov);
+	    Tcl_IncrRefCount(ov);
 	    res = Tcl_PkgRequireProc(interp, argv3, 1, &ov, NULL);
-	    Tcl_DecrRefCount (ov);
+	    TclDecrRefCount(ov);
 	    return res;
 	} else {
-	    if (CheckAllRequirements (interp, objc-3, objv+3) != TCL_OK) {
+	    if (CheckAllRequirements(interp, objc-3, objv+3) != TCL_OK) {
 		return TCL_ERROR;
 	    }
+
 	    return Tcl_PkgRequireProc(interp, argv2, objc-3, objv+3, NULL);
 	}
-#endif
 	break;
-    }
     case PKG_UNKNOWN: {
 	int length;
+
 	if (objc == 2) {
 	    if (iPtr->packageUnknown != NULL) {
 		Tcl_SetResult(interp, iPtr->packageUnknown, TCL_VOLATILE);
@@ -1244,7 +1008,7 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	    if (argv2[0] == 0) {
 		iPtr->packageUnknown = NULL;
 	    } else {
-		DupBlock(iPtr->packageUnknown, argv2, (unsigned) length + 1);
+		DupBlock(iPtr->packageUnknown, argv2, (unsigned) length+1);
 	    }
 	} else {
 	    Tcl_WrongNumArgs(interp, 2, objv, "?command?");
@@ -1252,85 +1016,89 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	}
 	break;
     }
-#ifdef TCL_TIP268
     case PKG_PREFER: {
-	/* See tclInt.h for the enum, just before Interp */
-	static CONST char *pkgPreferOptions[] = {
+	static const char *pkgPreferOptions[] = {
 	    "latest", "stable", NULL
 	};
 
+	/*
+	 * See tclInt.h for the enum, just before Interp.
+	 */
+
 	if (objc > 3) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "?latest|stable?");
 	    return TCL_ERROR;
 	} else if (objc == 3) {
-	    /* Set value. */
-	    int new;
+	    /*
+	     * Seting the value.
+	     */
+
+	    int newPref;
+
 	    if (Tcl_GetIndexFromObj(interp, objv[2], pkgPreferOptions,
-		    "preference", 0, &new) != TCL_OK) {
+		    "preference", 0, &newPref) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    if (new < iPtr->packagePrefer) {
-		iPtr->packagePrefer = new;
+
+	    if (newPref < iPtr->packagePrefer) {
+		iPtr->packagePrefer = newPref;
 	    }
 	}
-	/* Always return current value. */
+
+	/*
+	 * Always return current value.
+	 */
+
 	Tcl_SetObjResult(interp,
 		Tcl_NewStringObj(pkgPreferOptions[iPtr->packagePrefer], -1));
 	break;
     }
-#endif
-    case PKG_VCOMPARE: {
+    case PKG_VCOMPARE:
 	if (objc != 4) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "version1 version2");
 	    return TCL_ERROR;
 	}
-	argv3 = Tcl_GetString(objv[3]);
-	argv2 = Tcl_GetString(objv[2]);
-#ifndef TCL_TIP268
-	if ((CheckVersion(interp, argv2) != TCL_OK)
-		|| (CheckVersion(interp, argv3) != TCL_OK)) {
-	    return TCL_ERROR;
-	}
-	Tcl_SetObjResult(interp, Tcl_NewIntObj(
-		ComparePkgVersions(argv2, argv3, (int *) NULL)));
-#else
-	if ((CheckVersionAndConvert (interp, argv2, &iva, NULL) != TCL_OK)
-		|| (CheckVersionAndConvert (interp, argv3, &ivb, NULL)
-		!= TCL_OK)) {
+	argv3 = TclGetString(objv[3]);
+	argv2 = TclGetString(objv[2]);
+	if (CheckVersionAndConvert(interp, argv2, &iva, NULL) != TCL_OK ||
+		CheckVersionAndConvert(interp, argv3, &ivb, NULL) != TCL_OK) {
 	    if (iva != NULL) {
 		ckfree(iva);
 	    }
-	    /* ivb cannot be set in this branch */
+
+	    /*
+	     * ivb cannot be set in this branch.
+	     */
+
 	    return TCL_ERROR;
 	}
 
-	/* Comparison is done on the internal representation */
+	/*
+	 * Comparison is done on the internal representation.
+	 */
+
 	Tcl_SetObjResult(interp,
 		Tcl_NewIntObj(CompareVersions(iva, ivb, NULL)));
 	ckfree(iva);
 	ckfree(ivb);
-#endif
 	break;
-    }
-    case PKG_VERSIONS: {
+    case PKG_VERSIONS:
 	if (objc != 3) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "package");
 	    return TCL_ERROR;
 	}
-	argv2 = Tcl_GetString(objv[2]);
+	argv2 = TclGetString(objv[2]);
 	hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
 	if (hPtr != NULL) {
-	    pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+	    pkgPtr = Tcl_GetHashValue(hPtr);
 	    for (availPtr = pkgPtr->availPtr; availPtr != NULL;
-		 availPtr = availPtr->nextPtr) {
+		    availPtr = availPtr->nextPtr) {
 		Tcl_AppendElement(interp, availPtr->version);
 	    }
 	}
 	break;
-    }
     case PKG_VSATISFIES: {
-#ifdef TCL_TIP268
-	char* argv2i = NULL;
+	char *argv2i = NULL;
 
 	if (objc < 4) {
 	    Tcl_WrongNumArgs(interp, 2, objv,
@@ -1338,8 +1106,8 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	    return TCL_ERROR;
 	}
 
-	argv2 = Tcl_GetString(objv[2]);
-	if ((CheckVersionAndConvert(interp, argv2, &argv2i, NULL) != TCL_OK)) {
+	argv2 = TclGetString(objv[2]);
+	if (CheckVersionAndConvert(interp, argv2, &argv2i, NULL) != TCL_OK) {
 	    return TCL_ERROR;
 	} else if (CheckAllRequirements(interp, objc-3, objv+3) != TCL_OK) {
 	    ckfree(argv2i);
@@ -1347,27 +1115,13 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
 	}
 
 	satisfies = SomeRequirementSatisfied(argv2i, objc-3, objv+3);
-	ckfree (argv2i);
-#else
-	if (objc != 4) {
-	    Tcl_WrongNumArgs(interp, 2, objv, "version1 version2");
-	    return TCL_ERROR;
-	}
-	argv3 = Tcl_GetString(objv[3]);
-	argv2 = Tcl_GetString(objv[2]);
-	if ((CheckVersion(interp, argv2) != TCL_OK)
-		|| (CheckVersion(interp, argv3) != TCL_OK)) {
-	    return TCL_ERROR;
-	}
-	ComparePkgVersions(argv2, argv3, &satisfies);
-#endif
+	ckfree(argv2i);
 
-	Tcl_SetObjResult(interp, Tcl_NewIntObj(satisfies));
+	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(satisfies));
 	break;
     }
-    default: {
-	panic("Tcl_PackageObjCmd: bad option index to pkgOptions");
-    }
+    default:
+	Tcl_Panic("Tcl_PackageObjCmd: bad option index to pkgOptions");
     }
     return TCL_OK;
 }
@@ -1377,13 +1131,12 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
  *
  * FindPackage --
  *
- *	This procedure finds the Package record for a particular package
- *	in a particular interpreter, creating a record if one doesn't
- *	already exist.
+ *	This function finds the Package record for a particular package in a
+ *	particular interpreter, creating a record if one doesn't already
+ *	exist.
  *
  * Results:
- *	The return value is a pointer to the Package record for the
- *	package.
+ *	The return value is a pointer to the Package record for the package.
  *
  * Side effects:
  *	A new Package record may be created.
@@ -1392,24 +1145,24 @@ Tcl_PackageObjCmd(dummy, interp, objc, objv)
  */
 
 static Package *
-FindPackage(interp, name)
-     Tcl_Interp *interp;	/* Interpreter to use for package lookup. */
-     CONST char *name;		/* Name of package to fine. */
+FindPackage(
+    Tcl_Interp *interp,		/* Interpreter to use for package lookup. */
+    const char *name)		/* Name of package to fine. */
 {
     Interp *iPtr = (Interp *) interp;
     Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
     Package *pkgPtr;
 
-    hPtr = Tcl_CreateHashEntry(&iPtr->packageTable, name, &new);
-    if (new) {
+    hPtr = Tcl_CreateHashEntry(&iPtr->packageTable, name, &isNew);
+    if (isNew) {
 	pkgPtr = (Package *) ckalloc(sizeof(Package));
 	pkgPtr->version = NULL;
 	pkgPtr->availPtr = NULL;
 	pkgPtr->clientData = NULL;
 	Tcl_SetHashValue(hPtr, pkgPtr);
     } else {
-	pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+	pkgPtr = Tcl_GetHashValue(hPtr);
     }
     return pkgPtr;
 }
@@ -1419,9 +1172,8 @@ FindPackage(interp, name)
  *
  * TclFreePackageInfo --
  *
- *	This procedure is called during interpreter deletion to
- *	free all of the package-related information for the
- *	interpreter.
+ *	This function is called during interpreter deletion to free all of the
+ *	package-related information for the interpreter.
  *
  * Results:
  *	None.
@@ -1433,8 +1185,8 @@ FindPackage(interp, name)
  */
 
 void
-TclFreePackageInfo(iPtr)
-     Interp *iPtr;	/* Interpreter that is being deleted. */
+TclFreePackageInfo(
+    Interp *iPtr)		/* Interpereter that is being deleted. */
 {
     Package *pkgPtr;
     Tcl_HashSearch search;
@@ -1442,8 +1194,8 @@ TclFreePackageInfo(iPtr)
     PkgAvail *availPtr;
 
     for (hPtr = Tcl_FirstHashEntry(&iPtr->packageTable, &search);
-	 hPtr != NULL;  hPtr = Tcl_NextHashEntry(&search)) {
-	pkgPtr = (Package *) Tcl_GetHashValue(hPtr);
+	    hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
+	pkgPtr = Tcl_GetHashValue(hPtr);
 	if (pkgPtr->version != NULL) {
 	    ckfree(pkgPtr->version);
 	}
@@ -1465,15 +1217,16 @@ TclFreePackageInfo(iPtr)
 /*
  *----------------------------------------------------------------------
  *
- * CheckVersion / CheckVersionAndConvert --
+ * CheckVersionAndConvert --
  *
- *	This procedure checks to see whether a version number has
- *	valid syntax.
+ *	This function checks to see whether a version number has valid syntax.
+ *	It also generates a semi-internal representation (string rep of a list
+ *	of numbers).
  *
  * Results:
- *	If string is a properly formed version number the TCL_OK
- *	is returned.  Otherwise TCL_ERROR is returned and an error
- *	message is left in the interp's result.
+ *	If string is a properly formed version number the TCL_OK is returned.
+ *	Otherwise TCL_ERROR is returned and an error message is left in the
+ *	interp's result.
  *
  * Side effects:
  *	None.
@@ -1481,60 +1234,31 @@ TclFreePackageInfo(iPtr)
  *----------------------------------------------------------------------
  */
 
-#ifndef TCL_TIP268
 static int
-CheckVersion(interp, string)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    CONST char *string;		/* Supposedly a version number, which is
-				 * groups of decimal digits separated
-				 * by dots. */
-{
-    CONST char *p = string;
-    char prevChar;
-    if (!isdigit(UCHAR(*p))) {	/* INTL: digit */
-	goto error;
-    }
-    for (prevChar = *p, p++; *p != 0; p++) {
-	if (!isdigit(UCHAR(*p)) &&
-		((*p != '.') || (prevChar == '.'))) { /* INTL: digit */
-	    goto error;
-	}
-	prevChar = *p;
-    }
-    if (prevChar != '.') {
-	return TCL_OK;
-    }
-
- error:
-    Tcl_AppendResult(interp, "expected version number but got \"",
-	    string, "\"", (char *) NULL);
-    return TCL_ERROR;
-}
-#else
-static int
-CheckVersionAndConvert(interp, string, internal, stable)
-     Tcl_Interp *interp;	/* Used for error reporting. */
-     CONST char *string;	/* Supposedly a version number, which is
+CheckVersionAndConvert(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    const char *string,		/* Supposedly a version number, which is
 				 * groups of decimal digits separated by
 				 * dots. */
-     char** internal;    /* Internal normalized representation */
-     int* stable;      /* Flag: Version is (un)stable. */
+    char **internal,		/* Internal normalized representation */
+    int *stable)		/* Flag: Version is (un)stable. */
 {
-    CONST char *p = string;
+    const char *p = string;
     char prevChar;
     int hasunstable = 0;
     /*
      * 4* assuming that each char is a separator (a,b become ' -x ').
      * 4+ to have spce for an additional -2 at the end
      */
-    char* ibuf = ckalloc(4+4*strlen(string));
-    char* ip = ibuf;
+    char *ibuf = ckalloc(4 + 4*strlen(string));
+    char *ip = ibuf;
 
-    /* Basic rules
+    /*
+     * Basic rules
      * (1) First character has to be a digit.
      * (2) All other characters have to be a digit or '.'
      * (3) Two '.'s may not follow each other.
-
+     *
      * TIP 268, Modified rules
      * (1) s.a.
      * (2) All other characters have to be a digit, 'a', 'b', or '.'
@@ -1543,20 +1267,23 @@ CheckVersionAndConvert(interp, string, internal, stable)
      * (5) Neither 'a', nor 'b' may occur before or after a '.'
      */
 
-    if (!isdigit(UCHAR(*p))) {	/* INTL: digit */
+    if (!isdigit(UCHAR(*p))) {				/* INTL: digit */
 	goto error;
     }
+
     *ip++ = *p;
+
     for (prevChar = *p, p++; *p != 0; p++) {
-	if ((!isdigit(UCHAR(*p))) && (((*p != '.') && (*p != 'a')
-		&& (*p != 'b')) || ((hasunstable && ((*p == 'a')
-		|| (*p == 'b'))) || (((prevChar == 'a') || (prevChar == 'b')
-		|| (prevChar == '.')) && (*p == '.')) || (((*p == 'a')
-		|| (*p == 'b') || (*p == '.')) && (prevChar == '.'))))) {
-	    /* INTL: digit */
+	if (!isdigit(UCHAR(*p)) &&			/* INTL: digit */
+		((*p!='.' && *p!='a' && *p!='b') ||
+		((hasunstable && (*p=='a' || *p=='b')) ||
+		((prevChar=='a' || prevChar=='b' || prevChar=='.')
+			&& (*p=='.')) ||
+		((*p=='a' || *p=='b' || *p=='.') && prevChar=='.')))) {
 	    goto error;
 	}
-	if ((*p == 'a') || (*p == 'b')) {
+
+	if (*p == 'a' || *p == 'b') {
 	    hasunstable = 1;
 	}
 
@@ -1583,9 +1310,10 @@ CheckVersionAndConvert(interp, string, internal, stable)
 	} else {
 	    *ip++ = *p;
 	}
+
 	prevChar = *p;
     }
-    if ((prevChar != '.') && (prevChar != 'a') && (prevChar != 'b')) {
+    if (prevChar!='.' && prevChar!='a' && prevChar!='b') {
 	*ip = '\0';
 	if (internal != NULL) {
 	    *internal = ibuf;
@@ -1598,27 +1326,25 @@ CheckVersionAndConvert(interp, string, internal, stable)
 	return TCL_OK;
     }
 
- error:
+  error:
     ckfree(ibuf);
-    Tcl_AppendResult(interp, "expected version number but got \"",
-	    string, "\"", (char *) NULL);
+    Tcl_AppendResult(interp, "expected version number but got \"", string,
+	    "\"", NULL);
     return TCL_ERROR;
 }
-#endif
 
 /*
  *----------------------------------------------------------------------
  *
- * ComparePkgVersions / CompareVersions --
+ * CompareVersions --
  *
- *	This procedure compares two version numbers. (268: in internal rep).
+ *	This function compares two version numbers (in internal rep).
  *
  * Results:
- *	The return value is -1 if v1 is less than v2, 0 if the two
- *	version numbers are the same, and 1 if v1 is greater than v2.
- *	If *satPtr is non-NULL, the word it points to is filled in
- *	with 1 if v2 >= v1 and both numbers have the same major number
- *	or 0 otherwise.
+ *	The return value is -1 if v1 is less than v2, 0 if the two version
+ *	numbers are the same, and 1 if v1 is greater than v2. If *satPtr is
+ *	non-NULL, the word it points to is filled in with 1 if v2 >= v1 and
+ *	both numbers have the same major number or 0 otherwise.
  *
  * Side effects:
  *	None.
@@ -1626,142 +1352,157 @@ CheckVersionAndConvert(interp, string, internal, stable)
  *----------------------------------------------------------------------
  */
 
-#ifndef TCL_TIP268
 static int
-ComparePkgVersions(v1, v2, satPtr)
-    CONST char *v1;
-    CONST char *v2;		/* Versions strings, of form 2.1.3 (any
-				 * number of version numbers). */
-    int *satPtr;		/* If non-null, the word pointed to is
-				 * filled in with a 0/1 value.  1 means
-				 * v1 "satisfies" v2:  v1 is greater than
-				 * or equal to v2 and both version numbers
-				 * have the same major number. */
+CompareVersions(
+    char *v1, char *v2,		/* Versions strings, of form 2.1.3 (any number
+				 * of version numbers). */
+    int *isMajorPtr)		/* If non-null, the word pointed to is filled
+				 * in with a 0/1 value. 1 means that the
+				 * difference occured in the first element. */
 {
-    int thisIsMajor, n1, n2;
+    int thisIsMajor, res, flip;
+    char *s1, *e1, *s2, *e2, o1, o2;
 
     /*
      * Each iteration of the following loop processes one number from each
      * string, terminated by a " " (space). If those numbers don't match then
      * the comparison is over; otherwise, we loop back for the next number.
+     *
+     * TIP 268.
+     * This is identical the function 'ComparePkgVersion', but using the new
+     * space separator as used by the internal rep of version numbers. The
+     * special separators 'a' and 'b' have already been dealt with in
+     * 'CheckVersionAndConvert', they were translated into numbers as well.
+     * This keeps the comparison sane. Otherwise we would have to compare
+     * numerics, the separators, and also deal with the special case of
+     * end-of-string compared to separators. The semi-list rep we get here is
+     * much easier to handle, as it is still regular.
+     *
+     * Rewritten to not compute a numeric value for the extracted version
+     * number, but do string comparison. Skip any leading zeros for that to
+     * work. This change breaks through the 32bit-limit on version numbers.
      */
 
     thisIsMajor = 1;
+    s1 = v1;
+    s2 = v2;
+
     while (1) {
-	/* Parse one decimal number from the front of each string. */
+	/*
+	 * Parse one decimal number from the front of each string. Skip
+	 * leading zeros. Terminate found number for upcoming string-wise
+	 * comparison, if needed.
+	 */
 
-	n1 = n2 = 0;
-	while ((*v1 != 0) && (*v1 != '.')) {
-	    n1 = 10*n1 + (*v1 - '0');
-	    v1++;
+	while ((*s1 != 0) && (*s1 == '0')) {
+	    s1++;
 	}
-	while ((*v2 != 0) && (*v2 != '.')) {
-	    n2 = 10*n2 + (*v2 - '0');
-	    v2++;
+	while ((*s2 != 0) && (*s2 == '0')) {
+	    s2++;
 	}
 
 	/*
-	 * Compare and go on to the next version number if the current numbers
-	 * match.
+	 * s1, s2 now point to the beginnings of the numbers to compare. Test
+	 * for their signs first, as shortcut to the result (different signs),
+	 * or determines if result has to be flipped (both negative). If there
+	 * is no shortcut we have to insert terminators later to limit the
+	 * strcmp.
 	 */
 
-	if (n1 != n2) {
+	if ((*s1 == '-') && (*s2 != '-')) {
+	    /* s1 < 0, s2 >= 0 => s1 < s2 */
+	    res = -1;
 	    break;
 	}
-	if (*v1 != 0) {
-	    v1++;
-	} else if (*v2 == 0) {
+	if ((*s1 != '-') && (*s2 == '-')) {
+	    /* s1 >= 0, s2 < 0 => s1 > s2 */
+	    res = 1;
 	    break;
 	}
-	if (*v2 != 0) {
-	    v2++;
+
+	if ((*s1 == '-') && (*s2 == '-')) {
+	    /* a < b => -a > -b, etc. */
+	    s1++;
+	    s2++;
+	    flip = 1;
+	} else {
+	    flip = 0;
 	}
-	thisIsMajor = 0;
-    }
-    if (satPtr != NULL) {
-	*satPtr = (n1 == n2) || ((n1 > n2) && !thisIsMajor);
-    }
-    if (n1 > n2) {
-	return 1;
-    } else if (n1 == n2) {
-	return 0;
-    } else {
-	return -1;
-    }
-}
-#else
-static int
-CompareVersions(v1, v2, isMajorPtr)
-     CONST char *v1;	/* Versions strings, of form 2.1.3 (any number */
-     CONST char *v2;	/* of version numbers). */
-     int *isMajorPtr;   /* If non-null, the word pointed to is filled
-			 * in with a 0/1 value. 1 means that the difference
-			 * occured in the first element. */
-{
-    int thisIsMajor, n1, n2;
-    int res, flip;
 
-    /*
-     * Each iteration of the following loop processes one number from each
-     * string, terminated by a " " (space). If those numbers don't match then
-     * the comparison is over; otherwise, we loop back for the next number.
-     *
-     * TIP 268.
-     * This is identical the function 'ComparePkgVersion', but using the new
-     * space separator as used by the internal rep of version numbers. The
-     * special separators 'a' and 'b' have already been dealt with in
-     * 'CheckVersionAndConvert', they were translated into numbers as
-     * well. This keeps the comparison sane. Otherwise we would have to
-     * compare numerics, the separators, and also deal with the special case
-     * of end-of-string compared to separators. The semi-list rep we get here
-     * is much easier to handle, as it is still regular.
-     */
+	/*
+	 * The string comparison is needed, so now we determine where the
+	 * numbers end.
+	 */
 
-    thisIsMajor = 1;
-    while (1) {
-	/* Parse one decimal number from the front of each string. */
-
-	n1 = n2 = 0;
-	flip = 0;
-	while ((*v1 != 0) && (*v1 != ' ')) {
-	    if (*v1 == '-') {flip = 1 ; v1++ ; continue;}
-	    n1 = 10*n1 + (*v1 - '0');
-	    v1++;
+	e1 = s1;
+	while ((*e1 != 0) && (*e1 != ' ')) {
+	    e1++;
+	}
+	e2 = s2;
+	while ((*e2 != 0) && (*e2 != ' ')) {
+	    e2++;
 	}
-	if (flip) n1 = -n1;
-	flip = 0;
-	while ((*v2 != 0) && (*v2 != ' ')) {
-	    if (*v2 == '-') {flip = 1; v2++ ; continue;}
-	    n2 = 10*n2 + (*v2 - '0');
-	    v2++;
+
+	/*
+	 * s1 .. e1 and s2 .. e2 now bracket the numbers to compare. Insert
+	 * terminators, compare, and restore actual contents. First however
+	 * another shortcut. Compare lengths. Shorter string is smaller
+	 * number! Thus we strcmp only strings of identical length.
+	 */
+
+	if ((e1-s1) < (e2-s2)) {
+	    res = -1;
+	} else if ((e2-s2) < (e1-s1)) {
+	    res = 1;
+	} else {
+	    o1 = *e1;
+	    *e1 = '\0';
+	    o2 = *e2;
+	    *e2 = '\0';
+
+	    res = strcmp(s1, s2);
+	    res = (res < 0) ? -1 : (res ? 1 : 0);
+
+	    *e1 = o1;
+	    *e2 = o2;
 	}
-	if (flip) n2 = -n2;
 
 	/*
-	 * Compare and go on to the next version number if the current numbers
-	 * match.
+	 * Stop comparing segments when a difference has been found. Here we
+	 * may have to flip the result to account for signs.
 	 */
 
-	if (n1 != n2) {
+	if (res != 0) {
+	    if (flip) {
+		res = -res;
+	    }
 	    break;
 	}
-	if (*v1 != 0) {
-	    v1++;
-	} else if (*v2 == 0) {
+
+	/*
+	 * Go on to the next version number if the current numbers match.
+	 * However stop processing if the end of both numbers has been
+	 * reached.
+	 */
+
+	s1 = e1;
+	s2 = e2;
+
+	if (*s1 != 0) {
+	    s1++;
+	} else if (*s2 == 0) {
+	    /*
+	     * s1, s2 both at the end => identical
+	     */
+
+	    res = 0;
 	    break;
 	}
-	if (*v2 != 0) {
-	    v2++;
+	if (*s2 != 0) {
+	    s2++;
 	}
 	thisIsMajor = 0;
     }
-    if (n1 > n2) {
-	res = 1;
-    } else if (n1 == n2) {
-	res = 0;
-    } else {
-	res = -1;
-    }
 
     if (isMajorPtr != NULL) {
 	*isMajorPtr = thisIsMajor;
@@ -1775,13 +1516,12 @@ CompareVersions(v1, v2, isMajorPtr)
  *
  * CheckAllRequirements --
  *
- *	This function checks to see whether all requirements in a set
- *	have valid syntax.
+ *	This function checks to see whether all requirements in a set have
+ *	valid syntax.
  *
  * Results:
- *	TCL_OK is returned if all requirements are valid.
- *	Otherwise TCL_ERROR is returned and an error message
- *	is left in the interp's result.
+ *	TCL_OK is returned if all requirements are valid. Otherwise TCL_ERROR
+ *	is returned and an error message is left in the interp's result.
  *
  * Side effects:
  *	May modify the interpreter result.
@@ -1790,14 +1530,15 @@ CompareVersions(v1, v2, isMajorPtr)
  */
 
 static int
-CheckAllRequirements(interp, reqc, reqv)
-     Tcl_Interp* interp;
-     int reqc;                   /* Requirements to check. */
-     Tcl_Obj *CONST reqv[];
+CheckAllRequirements(
+    Tcl_Interp *interp,
+    int reqc,			/* Requirements to check. */
+    Tcl_Obj *const reqv[])
 {
     int i;
+
     for (i = 0; i < reqc; i++) {
-	if ((CheckRequirement(interp, Tcl_GetString(reqv[i])) != TCL_OK)) {
+	if ((CheckRequirement(interp, TclGetString(reqv[i])) != TCL_OK)) {
 	    return TCL_ERROR;
 	}
     }
@@ -1823,43 +1564,52 @@ CheckAllRequirements(interp, reqc, reqv)
  */
 
 static int
-CheckRequirement(interp, string)
-     Tcl_Interp *interp;	/* Used for error reporting. */
-     CONST char *string;	/* Supposedly a requirement. */
+CheckRequirement(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    const char *string)		/* Supposedly a requirement. */
 {
-    /* Syntax of requirement = version
-     *                       = version-version
-     *                       = version-
+    /*
+     * Syntax of requirement = version
+     *			     = version-version
+     *			     = version-
      */
 
-    char* dash = NULL;
-    char* buf;
+    char *dash = NULL, *buf;
 
-    dash = strchr (string, '-');
+    dash = strchr(string, '-');
     if (dash == NULL) {
-	/* no dash found, has to be a simple version */
-	return CheckVersionAndConvert (interp, string, NULL, NULL);
+	/*
+	 * No dash found, has to be a simple version.
+	 */
+
+	return CheckVersionAndConvert(interp, string, NULL, NULL);
     }
-    if (strchr (dash+1, '-') != NULL) {
-	/* More dashes found after the first. This is wrong. */
+
+    if (strchr(dash+1, '-') != NULL) {
+	/*
+	 * More dashes found after the first. This is wrong.
+	 */
+
 	Tcl_AppendResult(interp, "expected versionMin-versionMax but got \"",
 		string, "\"", NULL);
 	return TCL_ERROR;
     }
 
-    /* Exactly one dash is present. Copy the string, split at the location of
+    /*
+     * Exactly one dash is present. Copy the string, split at the location of
      * dash and check that both parts are versions. Note that the max part can
-     * be empty.
+     * be empty. Also note that the string allocated with strdup() must be
+     * freed with free() and not ckfree().
      */
 
     DupString(buf, string);
-    dash = buf + (dash - string);  
-    *dash = '\0';     /* buf  now <=> min part */
-    dash ++;          /* dash now <=> max part */
+    dash = buf + (dash - string);
+    *dash = '\0';		/* buf now <=> min part */
+    dash++;			/* dash now <=> max part */
 
-    if ((CheckVersionAndConvert(interp, buf, NULL, NULL) != TCL_OK)
-	    || ((*dash != '\0')
-	    && (CheckVersionAndConvert(interp, dash, NULL, NULL) != TCL_OK))) {
+    if ((CheckVersionAndConvert(interp, buf, NULL, NULL) != TCL_OK) ||
+	    ((*dash != '\0') &&
+	    (CheckVersionAndConvert(interp, dash, NULL, NULL) != TCL_OK))) {
 	ckfree(buf);
 	return TCL_ERROR;
     }
@@ -1885,20 +1635,23 @@ CheckRequirement(interp, string)
  */
 
 static void
-AddRequirementsToResult(interp, reqc, reqv)
-     Tcl_Interp* interp;
-     int reqc;		/* Requirements constraining the desired version. */
-     Tcl_Obj *CONST reqv[];	/* 0 means use the latest version available. */
+AddRequirementsToResult(
+    Tcl_Interp *interp,
+    int reqc,			/* Requirements constraining the desired
+				 * version. */
+    Tcl_Obj *const reqv[])	/* 0 means to use the latest version
+				 * available. */
 {
     if (reqc > 0) {
 	int i;
+
 	for (i = 0; i < reqc; i++) {
 	    int length;
 	    char *v = Tcl_GetStringFromObj(reqv[i], &length);
 
 	    if ((length & 0x1) && (v[length/2] == '-')
 		    && (strncmp(v, v+((length+1)/2), length/2) == 0)) {
-		Tcl_AppendResult(interp, " ", v+((length+1)/2), NULL);
+		Tcl_AppendResult(interp, " exactly ", v+((length+1)/2), NULL);
 	    } else {
 		Tcl_AppendResult(interp, " ", v, NULL);
 	    }
@@ -1923,19 +1676,22 @@ AddRequirementsToResult(interp, reqc, reqv)
  */
 
 static void
-AddRequirementsToDString(dstring, reqc, reqv)
-     Tcl_DString* dstring;
-     int reqc;		/* Requirements constraining the desired version. */
-     Tcl_Obj *CONST reqv[];	/* 0 means use the latest version available. */
+AddRequirementsToDString(
+    Tcl_DString *dsPtr,
+    int reqc,			/* Requirements constraining the desired
+				 * version. */
+    Tcl_Obj *const reqv[])	/* 0 means to use the latest version
+				 * available. */
 {
     if (reqc > 0) {
 	int i;
+
 	for (i = 0; i < reqc; i++) {
-	    Tcl_DStringAppend(dstring, " ", 1);
-	    Tcl_DStringAppend(dstring, TclGetString(reqv[i]), -1);
+	    Tcl_DStringAppend(dsPtr, " ", 1);
+	    Tcl_DStringAppend(dsPtr, TclGetString(reqv[i]), -1);
 	}
     } else {
-	Tcl_DStringAppend(dstring, " 0-", -1);
+	Tcl_DStringAppend(dsPtr, " 0-", -1);
     }
 }
 
@@ -1944,14 +1700,13 @@ AddRequirementsToDString(dstring, reqc, reqv)
  *
  * SomeRequirementSatisfied --
  *
- *	This function checks to see whether a version satisfies at
- *	least one of a set of requirements.
+ *	This function checks to see whether a version satisfies at least one
+ *	of a set of requirements.
  *
  * Results:
- *	If the requirements are satisfied 1 is returned.
- *	Otherwise 0 is returned. The function assumes
- *	that all pieces have valid syntax. And is allowed
- *	to make that assumption.
+ *	If the requirements are satisfied 1 is returned. Otherwise 0 is
+ *	returned. The function assumes that all pieces have valid syntax. And
+ *	is allowed to make that assumption.
  *
  * Side effects:
  *	None.
@@ -1960,17 +1715,18 @@ AddRequirementsToDString(dstring, reqc, reqv)
  */
 
 static int
-SomeRequirementSatisfied(availVersionI, reqc, reqv)
-     char *availVersionI;	/* Candidate version to check against the
+SomeRequirementSatisfied(
+    char *availVersionI,	/* Candidate version to check against the
 				 * requirements. */
-     int reqc;			/* Requirements constraining the desired
+    int reqc,			/* Requirements constraining the desired
 				 * version. */
-     Tcl_Obj *CONST reqv[];	/* 0 means use the latest version available. */
+    Tcl_Obj *const reqv[])	/* 0 means to use the latest version
+				 * available. */
 {
     int i;
 
     for (i = 0; i < reqc; i++) {
-	if (RequirementSatisfied(availVersionI, Tcl_GetString(reqv[i]))) {
+	if (RequirementSatisfied(availVersionI, TclGetString(reqv[i]))) {
 	    return 1;
 	}
     }
@@ -1985,10 +1741,9 @@ SomeRequirementSatisfied(availVersionI, reqc, reqv)
  *	This function checks to see whether a version satisfies a requirement.
  *
  * Results:
- *	If the requirement is satisfied 1 is returned.
- *	Otherwise 0 is returned. The function assumes
- *	that all pieces have valid syntax. And is allowed
- *	to make that assumption.
+ *	If the requirement is satisfied 1 is returned. Otherwise 0 is
+ *	returned. The function assumes that all pieces have valid syntax, and
+ *	is allowed to make that assumption.
  *
  * Side effects:
  *	None.
@@ -1997,75 +1752,80 @@ SomeRequirementSatisfied(availVersionI, reqc, reqv)
  */
 
 static int
-RequirementSatisfied(havei, req)
-     char *havei; /* Version string, of candidate package we have */
-     CONST char *req;   /* Requirement string the candidate has to satisfy */
+RequirementSatisfied(
+    char *havei,		/* Version string, of candidate package we
+				 * have. */
+    const char *req)		/* Requirement string the candidate has to
+				 * satisfy. */
 {
-    /* The have candidate is already in internal rep. */
+    /*
+     * The have candidate is already in internal rep.
+     */
 
     int satisfied, res;
-    char* dash = NULL;
-    char* buf, *min, *max;
+    char *dash = NULL, *buf, *min, *max;
 
-    dash = strchr (req, '-');
+    dash = strchr(req, '-');
     if (dash == NULL) {
-	/* No dash found, is a simple version, fallback to regular check.
-	 * The 'CheckVersionAndConvert' cannot fail. We pad the requirement with
+	/*
+	 * No dash found, is a simple version, fallback to regular check. The
+	 * 'CheckVersionAndConvert' cannot fail. We pad the requirement with
 	 * 'a0', i.e '-2' before doing the comparison to properly accept
 	 * unstables as well.
 	 */
 
-	char* reqi = NULL;
+	char *reqi = NULL;
 	int thisIsMajor;
 
-	CheckVersionAndConvert (NULL, req, &reqi, NULL);
-	strcat (reqi, " -2");
+	CheckVersionAndConvert(NULL, req, &reqi, NULL);
+	strcat(reqi, " -2");
 	res = CompareVersions(havei, reqi, &thisIsMajor);
 	satisfied = (res == 0) || ((res == 1) && !thisIsMajor);
 	ckfree(reqi);
 	return satisfied;
     }
 
-    /* Exactly one dash is present (Assumption of valid syntax). Copy the req,
-     * split at the location of dash and check that both parts are
-     * versions. Note that the max part can be empty.
+    /*
+     * Exactly one dash is present (Assumption of valid syntax). Copy the req,
+     * split at the location of dash and check that both parts are versions.
+     * Note that the max part can be empty.
      */
 
     DupString(buf, req);
-    dash  = buf + (dash - req);  
-    *dash = '\0';     /* buf  now <=> min part */
-    dash ++;          /* dash now <=> max part */
+    dash = buf + (dash - req);
+    *dash = '\0';		/* buf now <=> min part */
+    dash++;			/* dash now <=> max part */
 
     if (*dash == '\0') {
-	/* We have a min, but no max. For the comparison we generate the
+	/*
+	 * We have a min, but no max. For the comparison we generate the
 	 * internal rep, padded with 'a0' i.e. '-2'.
 	 */
 
-	/* No max part, unbound */
-
-	CheckVersionAndConvert (NULL, buf, &min, NULL);
-	strcat (min, " -2");
+	CheckVersionAndConvert(NULL, buf, &min, NULL);
+	strcat(min, " -2");
 	satisfied = (CompareVersions(havei, min, NULL) >= 0);
 	ckfree(min);
 	ckfree(buf);
 	return satisfied;
     }
 
-    /* We have both min and max, and generate their internal reps.
-     * When identical we compare as is, otherwise we pad with 'a0'
-     * to ove the range a bit.
+    /*
+     * We have both min and max, and generate their internal reps. When
+     * identical we compare as is, otherwise we pad with 'a0' to ove the range
+     * a bit.
      */
 
-    CheckVersionAndConvert (NULL, buf,  &min, NULL);
-    CheckVersionAndConvert (NULL, dash, &max, NULL);
+    CheckVersionAndConvert(NULL, buf, &min, NULL);
+    CheckVersionAndConvert(NULL, dash, &max, NULL);
 
     if (CompareVersions(min, max, NULL) == 0) {
 	satisfied = (CompareVersions(min, havei, NULL) == 0);
     } else {
-	strcat (min, " -2");
-	strcat (max, " -2");
+	strcat(min, " -2");
+	strcat(max, " -2");
 	satisfied = ((CompareVersions(min, havei, NULL) <= 0) &&
-		     (CompareVersions(havei, max, NULL) < 0));
+		(CompareVersions(havei, max, NULL) < 0));
     }
 
     ckfree(min);
@@ -2075,10 +1835,55 @@ RequirementSatisfied(havei, req)
 }
 
 /*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_PkgInitStubsCheck --
+ *
+ *	This is a replacement routine for Tcl_InitStubs() that is called
+ *	from code where -DUSE_TCL_STUBS has not been enabled.
+ *
+ * Results:
+ *	Returns the version of a conforming stubs table, or NULL, if
+ *	the table version doesn't satisfy the requested requirements,
+ *	according to historical practice.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+const char *
+Tcl_PkgInitStubsCheck(
+    Tcl_Interp *interp,
+    const char * version,
+    int exact)
+{
+    const char *actualVersion = Tcl_PkgPresent(interp, "Tcl", version, 0);
+
+    if (exact && actualVersion) {
+	const char *p = version;
+	int count = 0;
+
+	while (*p) {
+	    count += !isdigit(UCHAR(*p++));
+	}
+	if (count == 1) {
+	    if (0 != strncmp(version, actualVersion, strlen(version))) {
+		/* Construct error message */
+		Tcl_PkgPresent(interp, "Tcl", version, 1);
+		return NULL;
+	    }
+	} else {
+	    return Tcl_PkgPresent(interp, "Tcl", version, 1);
+	}
+    }
+    return actualVersion;
+}
+/*
  * Local Variables:
  * mode: c
  * c-basic-offset: 4
  * fill-column: 78
  * End:
  */
-#endif
diff --git a/generic/tclPkgConfig.c b/generic/tclPkgConfig.c
new file mode 100644
index 0000000..840ebed
--- /dev/null
+++ b/generic/tclPkgConfig.c
@@ -0,0 +1,135 @@
+/*
+ * tclPkgConfig.c --
+ *
+ *	This file contains the configuration information to embed into the tcl
+ *	binary library.
+ *
+ * Copyright (c) 2002 Andreas Kupries <andreas_kupries@users.sourceforge.net>
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+/* Note, the definitions in this module are influenced by the following C
+ * preprocessor macros:
+ *
+ * OSCMa  = shortcut for "old style configuration macro activates"
+ * NSCMdt = shortcut for "new style configuration macro declares that"
+ *
+ * - TCL_THREADS		OSCMa compilation as threaded core.
+ * - TCL_MEM_DEBUG		OSCMa memory debugging.
+ * - TCL_COMPILE_DEBUG		OSCMa debugging of bytecode compiler.
+ * - TCL_COMPILE_STATS		OSCMa bytecode compiler statistics.
+ *
+ * - TCL_CFG_DO64BIT		NSCMdt tcl is compiled for a 64bit system.
+ * - NDEBUG		NSCMdt tcl is compiled with symbol info off.
+ * - TCL_CFG_OPTIMIZED		NSCMdt tcl is compiled with cc optimizations on
+ * - TCL_CFG_PROFILED		NSCMdt tcl is compiled with profiling info.
+ *
+ * - CFG_RUNTIME_*		Paths to various stuff at runtime.
+ * - CFG_INSTALL_*		Paths to various stuff at installation time.
+ *
+ * - TCL_CFGVAL_ENCODING	string containing the encoding used for the
+ *				configuration values.
+ */
+
+#include "tclInt.h"
+
+/*
+ * Use C preprocessor statements to define the various values for the embedded
+ * configuration information.
+ */
+
+#ifdef TCL_THREADS
+#  define  CFG_THREADED		"1"
+#else
+#  define  CFG_THREADED		"0"
+#endif
+
+#ifdef TCL_MEM_DEBUG
+#  define CFG_MEMDEBUG		"1"
+#else
+#  define CFG_MEMDEBUG		"0"
+#endif
+
+#ifdef TCL_COMPILE_DEBUG
+#  define CFG_COMPILE_DEBUG	"1"
+#else
+#  define CFG_COMPILE_DEBUG	"0"
+#endif
+
+#ifdef TCL_COMPILE_STATS
+#  define CFG_COMPILE_STATS	"1"
+#else
+#  define CFG_COMPILE_STATS	"0"
+#endif
+
+#ifdef TCL_CFG_DO64BIT
+#  define CFG_64		"1"
+#else
+#  define CFG_64		"0"
+#endif
+
+#ifndef NDEBUG
+#  define CFG_DEBUG		"1"
+#else
+#  define CFG_DEBUG		"0"
+#endif
+
+#ifdef TCL_CFG_OPTIMIZED
+#  define CFG_OPTIMIZED		"1"
+#else
+#  define CFG_OPTIMIZED		"0"
+#endif
+
+#ifdef TCL_CFG_PROFILED
+#  define CFG_PROFILED		"1"
+#else
+#  define CFG_PROFILED		"0"
+#endif
+
+static Tcl_Config cfg[] = {
+    {"debug",			CFG_DEBUG},
+    {"threaded",		CFG_THREADED},
+    {"profiled",		CFG_PROFILED},
+    {"64bit",			CFG_64},
+    {"optimized",		CFG_OPTIMIZED},
+    {"mem_debug",		CFG_MEMDEBUG},
+    {"compile_debug",		CFG_COMPILE_DEBUG},
+    {"compile_stats",		CFG_COMPILE_STATS},
+
+    /* Runtime paths to various stuff */
+
+    {"libdir,runtime",		CFG_RUNTIME_LIBDIR},
+    {"bindir,runtime",		CFG_RUNTIME_BINDIR},
+    {"scriptdir,runtime",	CFG_RUNTIME_SCRDIR},
+    {"includedir,runtime",	CFG_RUNTIME_INCDIR},
+    {"docdir,runtime",		CFG_RUNTIME_DOCDIR},
+
+    /* Installation paths to various stuff */
+
+    {"libdir,install",		CFG_INSTALL_LIBDIR},
+    {"bindir,install",		CFG_INSTALL_BINDIR},
+    {"scriptdir,install",	CFG_INSTALL_SCRDIR},
+    {"includedir,install",	CFG_INSTALL_INCDIR},
+    {"docdir,install",		CFG_INSTALL_DOCDIR},
+
+    /* Last entry, closes the array */
+    {NULL, NULL}
+};
+
+void
+TclInitEmbeddedConfigurationInformation(
+    Tcl_Interp* interp)		/* Interpreter the configuration command is
+				 * registered in. */
+{
+    Tcl_RegisterConfig(interp, "tcl", cfg, TCL_CFGVAL_ENCODING);
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclPlatDecls.h b/generic/tclPlatDecls.h
index b339795..8652e8d 100644
--- a/generic/tclPlatDecls.h
+++ b/generic/tclPlatDecls.h
@@ -10,6 +10,17 @@
 #ifndef _TCLPLATDECLS
 #define _TCLPLATDECLS
 
+#undef TCL_STORAGE_CLASS
+#ifdef BUILD_tcl
+#   define TCL_STORAGE_CLASS DLLEXPORT
+#else
+#   ifdef USE_TCL_STUBS
+#      define TCL_STORAGE_CLASS
+#   else
+#      define TCL_STORAGE_CLASS DLLIMPORT
+#   endif
+#endif
+
 /*
  * TCHAR is needed here for win32, so if it is not defined yet do it here.
  * This way, we don't need to include <tchar.h> just for one define.
@@ -30,25 +41,36 @@
  */
 
 #if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
+#ifndef Tcl_WinUtfToTChar_TCL_DECLARED
+#define Tcl_WinUtfToTChar_TCL_DECLARED
 /* 0 */
-EXTERN TCHAR *		Tcl_WinUtfToTChar _ANSI_ARGS_((CONST char *str,
-				int len, Tcl_DString *dsPtr));
+EXTERN TCHAR *		Tcl_WinUtfToTChar(CONST char *str, int len,
+				Tcl_DString *dsPtr);
+#endif
+#ifndef Tcl_WinTCharToUtf_TCL_DECLARED
+#define Tcl_WinTCharToUtf_TCL_DECLARED
 /* 1 */
-EXTERN char *		Tcl_WinTCharToUtf _ANSI_ARGS_((CONST TCHAR *str,
-				int len, Tcl_DString *dsPtr));
+EXTERN char *		Tcl_WinTCharToUtf(CONST TCHAR *str, int len,
+				Tcl_DString *dsPtr);
+#endif
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
+#ifndef Tcl_MacOSXOpenBundleResources_TCL_DECLARED
+#define Tcl_MacOSXOpenBundleResources_TCL_DECLARED
 /* 0 */
-EXTERN int		Tcl_MacOSXOpenBundleResources _ANSI_ARGS_((
-				Tcl_Interp *interp, CONST char *bundleName,
-				int hasResourceFile, int maxPathLen,
-				char *libraryPath));
+EXTERN int		Tcl_MacOSXOpenBundleResources(Tcl_Interp *interp,
+				CONST char *bundleName, int hasResourceFile,
+				int maxPathLen, char *libraryPath);
+#endif
+#ifndef Tcl_MacOSXOpenVersionedBundleResources_TCL_DECLARED
+#define Tcl_MacOSXOpenVersionedBundleResources_TCL_DECLARED
 /* 1 */
-EXTERN int		Tcl_MacOSXOpenVersionedBundleResources _ANSI_ARGS_((
+EXTERN int		Tcl_MacOSXOpenVersionedBundleResources(
 				Tcl_Interp *interp, CONST char *bundleName,
 				CONST char *bundleVersion,
 				int hasResourceFile, int maxPathLen,
-				char *libraryPath));
+				char *libraryPath);
+#endif
 #endif /* MACOSX */
 
 typedef struct TclPlatStubs {
@@ -56,12 +78,12 @@ typedef struct TclPlatStubs {
     struct TclPlatStubHooks *hooks;
 
 #if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
-    TCHAR * (*tcl_WinUtfToTChar) _ANSI_ARGS_((CONST char *str, int len, Tcl_DString *dsPtr)); /* 0 */
-    char * (*tcl_WinTCharToUtf) _ANSI_ARGS_((CONST TCHAR *str, int len, Tcl_DString *dsPtr)); /* 1 */
+    TCHAR * (*tcl_WinUtfToTChar) (CONST char *str, int len, Tcl_DString *dsPtr); /* 0 */
+    char * (*tcl_WinTCharToUtf) (CONST TCHAR *str, int len, Tcl_DString *dsPtr); /* 1 */
 #endif /* WIN */
 #ifdef MAC_OSX_TCL /* MACOSX */
-    int (*tcl_MacOSXOpenBundleResources) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *bundleName, int hasResourceFile, int maxPathLen, char *libraryPath)); /* 0 */
-    int (*tcl_MacOSXOpenVersionedBundleResources) _ANSI_ARGS_((Tcl_Interp *interp, CONST char *bundleName, CONST char *bundleVersion, int hasResourceFile, int maxPathLen, char *libraryPath)); /* 1 */
+    int (*tcl_MacOSXOpenBundleResources) (Tcl_Interp *interp, CONST char *bundleName, int hasResourceFile, int maxPathLen, char *libraryPath); /* 0 */
+    int (*tcl_MacOSXOpenVersionedBundleResources) (Tcl_Interp *interp, CONST char *bundleName, CONST char *bundleVersion, int hasResourceFile, int maxPathLen, char *libraryPath); /* 1 */
 #endif /* MACOSX */
 } TclPlatStubs;
 
@@ -104,6 +126,9 @@ extern TclPlatStubs *tclPlatStubsPtr;
 
 /* !END!: Do not edit above this line. */
 
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLIMPORT
+
 #endif /* _TCLPLATDECLS */
 
 
diff --git a/generic/tclPort.h b/generic/tclPort.h
index c5d8b71..12a60db 100644
--- a/generic/tclPort.h
+++ b/generic/tclPort.h
@@ -14,13 +14,15 @@
 #ifndef _TCLPORT
 #define _TCLPORT
 
-#include "tcl.h"
-
-#if defined(__WIN32__)
+#ifdef HAVE_TCL_CONFIG_H
+#include "tclConfig.h"
+#endif
+#if defined(_WIN32)
 #   include "tclWinPort.h"
 #else
 #   include "tclUnixPort.h"
 #endif
+#include "tcl.h"
 
 #if !defined(LLONG_MIN)
 #   ifdef TCL_WIDE_INT_IS_LONG
diff --git a/generic/tclPosixStr.c b/generic/tclPosixStr.c
index 258996f..a11b532 100644
--- a/generic/tclPosixStr.c
+++ b/generic/tclPosixStr.c
@@ -1,9 +1,8 @@
-/* 
+/*
  * tclPosixStr.c --
  *
- *	This file contains procedures that generate strings
- *	corresponding to various POSIX-related codes, such
- *	as errno and signals.
+ *	This file contains procedures that generate strings corresponding to
+ *	various POSIX-related codes, such as errno and signals.
  *
  * Copyright (c) 1991-1994 The Regents of the University of California.
  * Copyright (c) 1994-1996 Sun Microsystems, Inc.
@@ -13,7 +12,6 @@
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
  *----------------------------------------------------------------------
@@ -23,9 +21,9 @@
  *	Return a textual identifier for the current errno value.
  *
  * Results:
- *	This procedure returns a machine-readable textual identifier
- *	that corresponds to the current errno value (e.g. "EPERM").
- *	The identifier is the same as the #define name in errno.h.
+ *	This procedure returns a machine-readable textual identifier that
+ *	corresponds to the current errno value (e.g. "EPERM"). The identifier
+ *	is the same as the #define name in errno.h.
  *
  * Side effects:
  *	None.
@@ -34,425 +32,425 @@
  */
 
 CONST char *
-Tcl_ErrnoId()
+Tcl_ErrnoId(void)
 {
     switch (errno) {
 #if defined(E2BIG) && (!defined(EOVERFLOW) || (E2BIG != EOVERFLOW))
-	case E2BIG: return "E2BIG";
+    case E2BIG: return "E2BIG";
 #endif
 #ifdef EACCES
-	case EACCES: return "EACCES";
+    case EACCES: return "EACCES";
 #endif
 #ifdef EADDRINUSE
-	case EADDRINUSE: return "EADDRINUSE";
+    case EADDRINUSE: return "EADDRINUSE";
 #endif
 #ifdef EADDRNOTAVAIL
-	case EADDRNOTAVAIL: return "EADDRNOTAVAIL";
+    case EADDRNOTAVAIL: return "EADDRNOTAVAIL";
 #endif
 #ifdef EADV
-	case EADV: return "EADV";
+    case EADV: return "EADV";
 #endif
 #ifdef EAFNOSUPPORT
-	case EAFNOSUPPORT: return "EAFNOSUPPORT";
+    case EAFNOSUPPORT: return "EAFNOSUPPORT";
 #endif
 #ifdef EAGAIN
-	case EAGAIN: return "EAGAIN";
+    case EAGAIN: return "EAGAIN";
 #endif
 #ifdef EALIGN
-	case EALIGN: return "EALIGN";
+    case EALIGN: return "EALIGN";
 #endif
 #if defined(EALREADY) && (!defined(EBUSY) || (EALREADY != EBUSY))
-	case EALREADY: return "EALREADY";
+    case EALREADY: return "EALREADY";
 #endif
 #ifdef EBADE
-	case EBADE: return "EBADE";
+    case EBADE: return "EBADE";
 #endif
 #ifdef EBADF
-	case EBADF: return "EBADF";
+    case EBADF: return "EBADF";
 #endif
 #ifdef EBADFD
-	case EBADFD: return "EBADFD";
+    case EBADFD: return "EBADFD";
 #endif
 #ifdef EBADMSG
-	case EBADMSG: return "EBADMSG";
+    case EBADMSG: return "EBADMSG";
 #endif
 #ifdef EBADR
-	case EBADR: return "EBADR";
+    case EBADR: return "EBADR";
 #endif
 #ifdef EBADRPC
-	case EBADRPC: return "EBADRPC";
+    case EBADRPC: return "EBADRPC";
 #endif
 #ifdef EBADRQC
-	case EBADRQC: return "EBADRQC";
+    case EBADRQC: return "EBADRQC";
 #endif
 #ifdef EBADSLT
-	case EBADSLT: return "EBADSLT";
+    case EBADSLT: return "EBADSLT";
 #endif
 #ifdef EBFONT
-	case EBFONT: return "EBFONT";
+    case EBFONT: return "EBFONT";
 #endif
 #ifdef EBUSY
-	case EBUSY: return "EBUSY";
+    case EBUSY: return "EBUSY";
 #endif
 #ifdef ECHILD
-	case ECHILD: return "ECHILD";
+    case ECHILD: return "ECHILD";
 #endif
 #ifdef ECHRNG
-	case ECHRNG: return "ECHRNG";
+    case ECHRNG: return "ECHRNG";
 #endif
 #ifdef ECOMM
-	case ECOMM: return "ECOMM";
+    case ECOMM: return "ECOMM";
 #endif
 #ifdef ECONNABORTED
-	case ECONNABORTED: return "ECONNABORTED";
+    case ECONNABORTED: return "ECONNABORTED";
 #endif
 #ifdef ECONNREFUSED
-	case ECONNREFUSED: return "ECONNREFUSED";
+    case ECONNREFUSED: return "ECONNREFUSED";
 #endif
 #ifdef ECONNRESET
-	case ECONNRESET: return "ECONNRESET";
+    case ECONNRESET: return "ECONNRESET";
 #endif
 #if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
-	case EDEADLK: return "EDEADLK";
+    case EDEADLK: return "EDEADLK";
 #endif
 #if defined(EDEADLOCK) && (!defined(EDEADLK) || (EDEADLOCK != EDEADLK))
-	case EDEADLOCK: return "EDEADLOCK";
+    case EDEADLOCK: return "EDEADLOCK";
 #endif
 #ifdef EDESTADDRREQ
-	case EDESTADDRREQ: return "EDESTADDRREQ";
+    case EDESTADDRREQ: return "EDESTADDRREQ";
 #endif
 #ifdef EDIRTY
-	case EDIRTY: return "EDIRTY";
+    case EDIRTY: return "EDIRTY";
 #endif
 #ifdef EDOM
-	case EDOM: return "EDOM";
+    case EDOM: return "EDOM";
 #endif
 #ifdef EDOTDOT
-	case EDOTDOT: return "EDOTDOT";
+    case EDOTDOT: return "EDOTDOT";
 #endif
 #ifdef EDQUOT
-	case EDQUOT: return "EDQUOT";
+    case EDQUOT: return "EDQUOT";
 #endif
 #ifdef EDUPPKG
-	case EDUPPKG: return "EDUPPKG";
+    case EDUPPKG: return "EDUPPKG";
 #endif
 #ifdef EEXIST
-	case EEXIST: return "EEXIST";
+    case EEXIST: return "EEXIST";
 #endif
 #ifdef EFAULT
-	case EFAULT: return "EFAULT";
+    case EFAULT: return "EFAULT";
 #endif
 #ifdef EFBIG
-	case EFBIG: return "EFBIG";
+    case EFBIG: return "EFBIG";
 #endif
 #ifdef EHOSTDOWN
-	case EHOSTDOWN: return "EHOSTDOWN";
+    case EHOSTDOWN: return "EHOSTDOWN";
 #endif
 #ifdef EHOSTUNREACH
-	case EHOSTUNREACH: return "EHOSTUNREACH";
+    case EHOSTUNREACH: return "EHOSTUNREACH";
 #endif
 #if defined(EIDRM) && (!defined(EINPROGRESS) || (EIDRM != EINPROGRESS))
-	case EIDRM: return "EIDRM";
+    case EIDRM: return "EIDRM";
 #endif
 #ifdef EINIT
-	case EINIT: return "EINIT";
+    case EINIT: return "EINIT";
 #endif
 #ifdef EINPROGRESS
-	case EINPROGRESS: return "EINPROGRESS";
+    case EINPROGRESS: return "EINPROGRESS";
 #endif
 #ifdef EINTR
-	case EINTR: return "EINTR";
+    case EINTR: return "EINTR";
 #endif
 #ifdef EINVAL
-	case EINVAL: return "EINVAL";
+    case EINVAL: return "EINVAL";
 #endif
 #ifdef EIO
-	case EIO: return "EIO";
+    case EIO: return "EIO";
 #endif
 #ifdef EISCONN
-	case EISCONN: return "EISCONN";
+    case EISCONN: return "EISCONN";
 #endif
 #ifdef EISDIR
-	case EISDIR: return "EISDIR";
+    case EISDIR: return "EISDIR";
 #endif
 #ifdef EISNAME
-	case EISNAM: return "EISNAM";
+    case EISNAM: return "EISNAM";
 #endif
 #ifdef ELBIN
-	case ELBIN: return "ELBIN";
+    case ELBIN: return "ELBIN";
 #endif
 #ifdef EL2HLT
-	case EL2HLT: return "EL2HLT";
+    case EL2HLT: return "EL2HLT";
 #endif
 #ifdef EL2NSYNC
-	case EL2NSYNC: return "EL2NSYNC";
+    case EL2NSYNC: return "EL2NSYNC";
 #endif
 #ifdef EL3HLT
-	case EL3HLT: return "EL3HLT";
+    case EL3HLT: return "EL3HLT";
 #endif
 #ifdef EL3RST
-	case EL3RST: return "EL3RST";
+    case EL3RST: return "EL3RST";
 #endif
 #ifdef ELIBACC
-	case ELIBACC: return "ELIBACC";
+    case ELIBACC: return "ELIBACC";
 #endif
 #ifdef ELIBBAD
-	case ELIBBAD: return "ELIBBAD";
+    case ELIBBAD: return "ELIBBAD";
 #endif
 #ifdef ELIBEXEC
-	case ELIBEXEC: return "ELIBEXEC";
+    case ELIBEXEC: return "ELIBEXEC";
 #endif
 #ifdef ELIBMAX
-	case ELIBMAX: return "ELIBMAX";
+    case ELIBMAX: return "ELIBMAX";
 #endif
 #ifdef ELIBSCN
-	case ELIBSCN: return "ELIBSCN";
+    case ELIBSCN: return "ELIBSCN";
 #endif
 #ifdef ELNRNG
-	case ELNRNG: return "ELNRNG";
+    case ELNRNG: return "ELNRNG";
 #endif
 #if defined(ELOOP) && (!defined(ENOENT) || (ELOOP != ENOENT))
-	case ELOOP: return "ELOOP";
+    case ELOOP: return "ELOOP";
 #endif
 #ifdef EMFILE
-	case EMFILE: return "EMFILE";
+    case EMFILE: return "EMFILE";
 #endif
 #ifdef EMLINK
-	case EMLINK: return "EMLINK";
+    case EMLINK: return "EMLINK";
 #endif
 #ifdef EMSGSIZE
-	case EMSGSIZE: return "EMSGSIZE";
+    case EMSGSIZE: return "EMSGSIZE";
 #endif
 #ifdef EMULTIHOP
-	case EMULTIHOP: return "EMULTIHOP";
+    case EMULTIHOP: return "EMULTIHOP";
 #endif
 #ifdef ENAMETOOLONG
-	case ENAMETOOLONG: return "ENAMETOOLONG";
+    case ENAMETOOLONG: return "ENAMETOOLONG";
 #endif
 #ifdef ENAVAIL
-	case ENAVAIL: return "ENAVAIL";
+    case ENAVAIL: return "ENAVAIL";
 #endif
 #ifdef ENET
-	case ENET: return "ENET";
+    case ENET: return "ENET";
 #endif
 #ifdef ENETDOWN
-	case ENETDOWN: return "ENETDOWN";
+    case ENETDOWN: return "ENETDOWN";
 #endif
 #ifdef ENETRESET
-	case ENETRESET: return "ENETRESET";
+    case ENETRESET: return "ENETRESET";
 #endif
 #ifdef ENETUNREACH
-	case ENETUNREACH: return "ENETUNREACH";
+    case ENETUNREACH: return "ENETUNREACH";
 #endif
 #ifdef ENFILE
-	case ENFILE: return "ENFILE";
+    case ENFILE: return "ENFILE";
 #endif
 #ifdef ENOANO
-	case ENOANO: return "ENOANO";
+    case ENOANO: return "ENOANO";
 #endif
 #if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
-	case ENOBUFS: return "ENOBUFS";
+    case ENOBUFS: return "ENOBUFS";
 #endif
 #ifdef ENOCSI
-	case ENOCSI: return "ENOCSI";
+    case ENOCSI: return "ENOCSI";
 #endif
 #if defined(ENODATA) && (!defined(ECONNREFUSED) || (ENODATA != ECONNREFUSED))
-	case ENODATA: return "ENODATA";
+    case ENODATA: return "ENODATA";
 #endif
 #ifdef ENODEV
-	case ENODEV: return "ENODEV";
+    case ENODEV: return "ENODEV";
 #endif
 #ifdef ENOENT
-	case ENOENT: return "ENOENT";
+    case ENOENT: return "ENOENT";
 #endif
 #ifdef ENOEXEC
-	case ENOEXEC: return "ENOEXEC";
+    case ENOEXEC: return "ENOEXEC";
 #endif
 #ifdef ENOLCK
-	case ENOLCK: return "ENOLCK";
+    case ENOLCK: return "ENOLCK";
 #endif
 #if defined(ENOLINK) && (!defined(ESOCKTNOSUPPORT) || (ESOCKTNOSUPPORT != ENOLINK))
-	case ENOLINK: return "ENOLINK";
+    case ENOLINK: return "ENOLINK";
 #endif
 #ifdef ENOMEM
-	case ENOMEM: return "ENOMEM";
+    case ENOMEM: return "ENOMEM";
 #endif
 #ifdef ENOMSG
-	case ENOMSG: return "ENOMSG";
+    case ENOMSG: return "ENOMSG";
 #endif
 #ifdef ENONET
-	case ENONET: return "ENONET";
+    case ENONET: return "ENONET";
 #endif
 #ifdef ENOPKG
-	case ENOPKG: return "ENOPKG";
+    case ENOPKG: return "ENOPKG";
 #endif
 #if defined(ENOPROTOOPT) && (!defined(EPFNOSUPPORT) || (EPFNOSUPPORT != ENOPROTOOPT))
-	case ENOPROTOOPT: return "ENOPROTOOPT";
+    case ENOPROTOOPT: return "ENOPROTOOPT";
 #endif
 #ifdef ENOSPC
-	case ENOSPC: return "ENOSPC";
+    case ENOSPC: return "ENOSPC";
 #endif
 #if defined(ENOSR) && (!defined(ENAMETOOLONG) || (ENAMETOOLONG != ENOSR))
-	case ENOSR: return "ENOSR";
+    case ENOSR: return "ENOSR";
 #endif
 #if defined(ENOSTR) && (!defined(ENOTTY) || (ENOTTY != ENOSTR))
-	case ENOSTR: return "ENOSTR";
+    case ENOSTR: return "ENOSTR";
 #endif
 #ifdef ENOSYM
-	case ENOSYM: return "ENOSYM";
+    case ENOSYM: return "ENOSYM";
 #endif
 #ifdef ENOSYS
-	case ENOSYS: return "ENOSYS";
+    case ENOSYS: return "ENOSYS";
 #endif
 #ifdef ENOTBLK
-	case ENOTBLK: return "ENOTBLK";
+    case ENOTBLK: return "ENOTBLK";
 #endif
 #ifdef ENOTCONN
-	case ENOTCONN: return "ENOTCONN";
+    case ENOTCONN: return "ENOTCONN";
 #endif
 #ifdef ENOTDIR
-	case ENOTDIR: return "ENOTDIR";
+    case ENOTDIR: return "ENOTDIR";
 #endif
 #if defined(ENOTEMPTY) && (!defined(EEXIST) || (ENOTEMPTY != EEXIST))
-	case ENOTEMPTY: return "ENOTEMPTY";
+    case ENOTEMPTY: return "ENOTEMPTY";
 #endif
 #ifdef ENOTNAM
-	case ENOTNAM: return "ENOTNAM";
+    case ENOTNAM: return "ENOTNAM";
 #endif
 #ifdef ENOTSOCK
-	case ENOTSOCK: return "ENOTSOCK";
+    case ENOTSOCK: return "ENOTSOCK";
 #endif
 #ifdef ENOTSUP
-	case ENOTSUP: return "ENOTSUP";
+    case ENOTSUP: return "ENOTSUP";
 #endif
 #ifdef ENOTTY
-	case ENOTTY: return "ENOTTY";
+    case ENOTTY: return "ENOTTY";
 #endif
 #ifdef ENOTUNIQ
-	case ENOTUNIQ: return "ENOTUNIQ";
+    case ENOTUNIQ: return "ENOTUNIQ";
 #endif
 #ifdef ENXIO
-	case ENXIO: return "ENXIO";
+    case ENXIO: return "ENXIO";
 #endif
 #if defined(EOPNOTSUPP) &&  (!defined(ENOTSUP) || (ENOTSUP != EOPNOTSUPP))
-	case EOPNOTSUPP: return "EOPNOTSUPP";
+    case EOPNOTSUPP: return "EOPNOTSUPP";
 #endif
 #if defined(EOVERFLOW) && (!defined(EFBIG) || (EOVERFLOW != EFBIG)) && (!defined(EINVAL) || (EOVERFLOW != EINVAL))
-        case EOVERFLOW: return "EOVERFLOW";
+    case EOVERFLOW: return "EOVERFLOW";
 #endif
 #ifdef EPERM
-	case EPERM: return "EPERM";
+    case EPERM: return "EPERM";
 #endif
 #if defined(EPFNOSUPPORT) && (!defined(ENOLCK) || (ENOLCK != EPFNOSUPPORT))
-	case EPFNOSUPPORT: return "EPFNOSUPPORT";
+    case EPFNOSUPPORT: return "EPFNOSUPPORT";
 #endif
 #ifdef EPIPE
-	case EPIPE: return "EPIPE";
+    case EPIPE: return "EPIPE";
 #endif
 #ifdef EPROCLIM
-	case EPROCLIM: return "EPROCLIM";
+    case EPROCLIM: return "EPROCLIM";
 #endif
 #ifdef EPROCUNAVAIL
-	case EPROCUNAVAIL: return "EPROCUNAVAIL";
+    case EPROCUNAVAIL: return "EPROCUNAVAIL";
 #endif
 #ifdef EPROGMISMATCH
-	case EPROGMISMATCH: return "EPROGMISMATCH";
+    case EPROGMISMATCH: return "EPROGMISMATCH";
 #endif
 #ifdef EPROGUNAVAIL
-	case EPROGUNAVAIL: return "EPROGUNAVAIL";
+    case EPROGUNAVAIL: return "EPROGUNAVAIL";
 #endif
 #ifdef EPROTO
-	case EPROTO: return "EPROTO";
+    case EPROTO: return "EPROTO";
 #endif
 #ifdef EPROTONOSUPPORT
-	case EPROTONOSUPPORT: return "EPROTONOSUPPORT";
+    case EPROTONOSUPPORT: return "EPROTONOSUPPORT";
 #endif
 #ifdef EPROTOTYPE
-	case EPROTOTYPE: return "EPROTOTYPE";
+    case EPROTOTYPE: return "EPROTOTYPE";
 #endif
 #ifdef ERANGE
-	case ERANGE: return "ERANGE";
+    case ERANGE: return "ERANGE";
 #endif
 #if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
-	case EREFUSED: return "EREFUSED";
+    case EREFUSED: return "EREFUSED";
 #endif
 #ifdef EREMCHG
-	case EREMCHG: return "EREMCHG";
+    case EREMCHG: return "EREMCHG";
 #endif
 #ifdef EREMDEV
-	case EREMDEV: return "EREMDEV";
+    case EREMDEV: return "EREMDEV";
 #endif
 #ifdef EREMOTE
-	case EREMOTE: return "EREMOTE";
+    case EREMOTE: return "EREMOTE";
 #endif
 #ifdef EREMOTEIO
-	case EREMOTEIO: return "EREMOTEIO";
+    case EREMOTEIO: return "EREMOTEIO";
 #endif
 #ifdef EREMOTERELEASE
-	case EREMOTERELEASE: return "EREMOTERELEASE";
+    case EREMOTERELEASE: return "EREMOTERELEASE";
 #endif
 #ifdef EROFS
-	case EROFS: return "EROFS";
+    case EROFS: return "EROFS";
 #endif
 #ifdef ERPCMISMATCH
-	case ERPCMISMATCH: return "ERPCMISMATCH";
+    case ERPCMISMATCH: return "ERPCMISMATCH";
 #endif
 #ifdef ERREMOTE
-	case ERREMOTE: return "ERREMOTE";
+    case ERREMOTE: return "ERREMOTE";
 #endif
 #ifdef ESHUTDOWN
-	case ESHUTDOWN: return "ESHUTDOWN";
+    case ESHUTDOWN: return "ESHUTDOWN";
 #endif
 #ifdef ESOCKTNOSUPPORT
-	case ESOCKTNOSUPPORT: return "ESOCKTNOSUPPORT";
+    case ESOCKTNOSUPPORT: return "ESOCKTNOSUPPORT";
 #endif
 #ifdef ESPIPE
-	case ESPIPE: return "ESPIPE";
+    case ESPIPE: return "ESPIPE";
 #endif
 #ifdef ESRCH
-	case ESRCH: return "ESRCH";
+    case ESRCH: return "ESRCH";
 #endif
 #ifdef ESRMNT
-	case ESRMNT: return "ESRMNT";
+    case ESRMNT: return "ESRMNT";
 #endif
 #ifdef ESTALE
-	case ESTALE: return "ESTALE";
+    case ESTALE: return "ESTALE";
 #endif
 #ifdef ESUCCESS
-	case ESUCCESS: return "ESUCCESS";
+    case ESUCCESS: return "ESUCCESS";
 #endif
 #if defined(ETIME) && (!defined(ELOOP) || (ETIME != ELOOP))
-	case ETIME: return "ETIME";
+    case ETIME: return "ETIME";
 #endif
 #if defined(ETIMEDOUT) && (!defined(ENOSTR) || (ETIMEDOUT != ENOSTR))
-	case ETIMEDOUT: return "ETIMEDOUT";
+    case ETIMEDOUT: return "ETIMEDOUT";
 #endif
 #ifdef ETOOMANYREFS
-	case ETOOMANYREFS: return "ETOOMANYREFS";
+    case ETOOMANYREFS: return "ETOOMANYREFS";
 #endif
 #ifdef ETXTBSY
-	case ETXTBSY: return "ETXTBSY";
+    case ETXTBSY: return "ETXTBSY";
 #endif
 #ifdef EUCLEAN
-	case EUCLEAN: return "EUCLEAN";
+    case EUCLEAN: return "EUCLEAN";
 #endif
 #ifdef EUNATCH
-	case EUNATCH: return "EUNATCH";
+    case EUNATCH: return "EUNATCH";
 #endif
 #ifdef EUSERS
-	case EUSERS: return "EUSERS";
+    case EUSERS: return "EUSERS";
 #endif
 #ifdef EVERSION
-	case EVERSION: return "EVERSION";
+    case EVERSION: return "EVERSION";
 #endif
 #if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
-	case EWOULDBLOCK: return "EWOULDBLOCK";
+    case EWOULDBLOCK: return "EWOULDBLOCK";
 #endif
 #ifdef EXDEV
-	case EXDEV: return "EXDEV";
+    case EXDEV: return "EXDEV";
 #endif
 #ifdef EXFULL
-	case EXFULL: return "EXFULL";
+    case EXFULL: return "EXFULL";
 #endif
     }
     return "unknown error";
@@ -463,17 +461,15 @@ Tcl_ErrnoId()
  *
  * Tcl_ErrnoMsg --
  *
- *	Return a human-readable message corresponding to a given
- *	errno value.
+ *	Return a human-readable message corresponding to a given errno value.
  *
  * Results:
- *	The return value is the standard POSIX error message for
- *	errno.  This procedure is used instead of strerror because
- *	strerror returns slightly different values on different
- *	machines (e.g. different capitalizations), which cause
- *	problems for things such as regression tests.  This procedure
- *	provides messages for most standard errors, then it calls
- *	strerror for things it doesn't understand.
+ *	The return value is the standard POSIX error message for errno.  This
+ *	procedure is used instead of strerror because strerror returns
+ *	slightly different values on different machines (e.g. different
+ *	capitalizations), which cause problems for things such as regression
+ *	tests. This procedure provides messages for most standard errors, then
+ *	it calls strerror for things it doesn't understand.
  *
  * Side effects:
  *	None.
@@ -482,433 +478,433 @@ Tcl_ErrnoId()
  */
 
 CONST char *
-Tcl_ErrnoMsg(err)
-    int err;			/* Error number (such as in errno variable). */
+Tcl_ErrnoMsg(
+     int err)			/* Error number (such as in errno variable). */
 {
     switch (err) {
 #if defined(E2BIG) && (!defined(EOVERFLOW) || (E2BIG != EOVERFLOW))
-	case E2BIG: return "argument list too long";
+    case E2BIG: return "argument list too long";
 #endif
 #ifdef EACCES
-	case EACCES: return "permission denied";
+    case EACCES: return "permission denied";
 #endif
 #ifdef EADDRINUSE
-	case EADDRINUSE: return "address already in use";
+    case EADDRINUSE: return "address already in use";
 #endif
 #ifdef EADDRNOTAVAIL
-	case EADDRNOTAVAIL: return "can't assign requested address";
+    case EADDRNOTAVAIL: return "can't assign requested address";
 #endif
 #ifdef EADV
-	case EADV: return "advertise error";
+    case EADV: return "advertise error";
 #endif
 #ifdef EAFNOSUPPORT
-	case EAFNOSUPPORT: return "address family not supported by protocol family";
+    case EAFNOSUPPORT: return "address family not supported by protocol family";
 #endif
 #ifdef EAGAIN
-	case EAGAIN: return "resource temporarily unavailable";
+    case EAGAIN: return "resource temporarily unavailable";
 #endif
 #ifdef EALIGN
-	case EALIGN: return "EALIGN";
+    case EALIGN: return "EALIGN";
 #endif
 #if defined(EALREADY) && (!defined(EBUSY) || (EALREADY != EBUSY))
-	case EALREADY: return "operation already in progress";
+    case EALREADY: return "operation already in progress";
 #endif
 #ifdef EBADE
-	case EBADE: return "bad exchange descriptor";
+    case EBADE: return "bad exchange descriptor";
 #endif
 #ifdef EBADF
-	case EBADF: return "bad file number";
+    case EBADF: return "bad file number";
 #endif
 #ifdef EBADFD
-	case EBADFD: return "file descriptor in bad state";
+    case EBADFD: return "file descriptor in bad state";
 #endif
 #ifdef EBADMSG
-	case EBADMSG: return "not a data message";
+    case EBADMSG: return "not a data message";
 #endif
 #ifdef EBADR
-	case EBADR: return "bad request descriptor";
+    case EBADR: return "bad request descriptor";
 #endif
 #ifdef EBADRPC
-	case EBADRPC: return "RPC structure is bad";
+    case EBADRPC: return "RPC structure is bad";
 #endif
 #ifdef EBADRQC
-	case EBADRQC: return "bad request code";
+    case EBADRQC: return "bad request code";
 #endif
 #ifdef EBADSLT
-	case EBADSLT: return "invalid slot";
+    case EBADSLT: return "invalid slot";
 #endif
 #ifdef EBFONT
-	case EBFONT: return "bad font file format";
+    case EBFONT: return "bad font file format";
 #endif
 #ifdef EBUSY
-	case EBUSY: return "file busy";
+    case EBUSY: return "file busy";
 #endif
 #ifdef ECHILD
-	case ECHILD: return "no children";
+    case ECHILD: return "no children";
 #endif
 #ifdef ECHRNG
-	case ECHRNG: return "channel number out of range";
+    case ECHRNG: return "channel number out of range";
 #endif
 #ifdef ECOMM
-	case ECOMM: return "communication error on send";
+    case ECOMM: return "communication error on send";
 #endif
 #ifdef ECONNABORTED
-	case ECONNABORTED: return "software caused connection abort";
+    case ECONNABORTED: return "software caused connection abort";
 #endif
 #ifdef ECONNREFUSED
-	case ECONNREFUSED: return "connection refused";
+    case ECONNREFUSED: return "connection refused";
 #endif
 #ifdef ECONNRESET
-	case ECONNRESET: return "connection reset by peer";
+    case ECONNRESET: return "connection reset by peer";
 #endif
 #if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
-	case EDEADLK: return "resource deadlock avoided";
+    case EDEADLK: return "resource deadlock avoided";
 #endif
 #if defined(EDEADLOCK) && (!defined(EDEADLK) || (EDEADLOCK != EDEADLK))
-	case EDEADLOCK: return "resource deadlock avoided";
+    case EDEADLOCK: return "resource deadlock avoided";
 #endif
 #ifdef EDESTADDRREQ
-	case EDESTADDRREQ: return "destination address required";
+    case EDESTADDRREQ: return "destination address required";
 #endif
 #ifdef EDIRTY
-	case EDIRTY: return "mounting a dirty fs w/o force";
+    case EDIRTY: return "mounting a dirty fs w/o force";
 #endif
 #ifdef EDOM
-	case EDOM: return "math argument out of range";
+    case EDOM: return "math argument out of range";
 #endif
 #ifdef EDOTDOT
-	case EDOTDOT: return "cross mount point";
+    case EDOTDOT: return "cross mount point";
 #endif
 #ifdef EDQUOT
-	case EDQUOT: return "disk quota exceeded";
+    case EDQUOT: return "disk quota exceeded";
 #endif
 #ifdef EDUPPKG
-	case EDUPPKG: return "duplicate package name";
+    case EDUPPKG: return "duplicate package name";
 #endif
 #ifdef EEXIST
-	case EEXIST: return "file already exists";
+    case EEXIST: return "file already exists";
 #endif
 #ifdef EFAULT
-	case EFAULT: return "bad address in system call argument";
+    case EFAULT: return "bad address in system call argument";
 #endif
 #ifdef EFBIG
-	case EFBIG: return "file too large";
+    case EFBIG: return "file too large";
 #endif
 #ifdef EHOSTDOWN
-	case EHOSTDOWN: return "host is down";
+    case EHOSTDOWN: return "host is down";
 #endif
 #ifdef EHOSTUNREACH
-	case EHOSTUNREACH: return "host is unreachable";
+    case EHOSTUNREACH: return "host is unreachable";
 #endif
 #if defined(EIDRM) && (!defined(EINPROGRESS) || (EIDRM != EINPROGRESS))
-	case EIDRM: return "identifier removed";
+    case EIDRM: return "identifier removed";
 #endif
 #ifdef EINIT
-	case EINIT: return "initialization error";
+    case EINIT: return "initialization error";
 #endif
 #ifdef EINPROGRESS
-	case EINPROGRESS: return "operation now in progress";
+    case EINPROGRESS: return "operation now in progress";
 #endif
 #ifdef EINTR
-	case EINTR: return "interrupted system call";
+    case EINTR: return "interrupted system call";
 #endif
 #ifdef EINVAL
-	case EINVAL: return "invalid argument";
+    case EINVAL: return "invalid argument";
 #endif
 #ifdef EIO
-	case EIO: return "I/O error";
+    case EIO: return "I/O error";
 #endif
 #ifdef EISCONN
-	case EISCONN: return "socket is already connected";
+    case EISCONN: return "socket is already connected";
 #endif
 #ifdef EISDIR
-	case EISDIR: return "illegal operation on a directory";
+    case EISDIR: return "illegal operation on a directory";
 #endif
 #ifdef EISNAME
-	case EISNAM: return "is a name file";
+    case EISNAM: return "is a name file";
 #endif
 #ifdef ELBIN
-	case ELBIN: return "ELBIN";
+    case ELBIN: return "ELBIN";
 #endif
 #ifdef EL2HLT
-	case EL2HLT: return "level 2 halted";
+    case EL2HLT: return "level 2 halted";
 #endif
 #ifdef EL2NSYNC
-	case EL2NSYNC: return "level 2 not synchronized";
+    case EL2NSYNC: return "level 2 not synchronized";
 #endif
 #ifdef EL3HLT
-	case EL3HLT: return "level 3 halted";
+    case EL3HLT: return "level 3 halted";
 #endif
 #ifdef EL3RST
-	case EL3RST: return "level 3 reset";
+    case EL3RST: return "level 3 reset";
 #endif
 #ifdef ELIBACC
-	case ELIBACC: return "can not access a needed shared library";
+    case ELIBACC: return "can not access a needed shared library";
 #endif
 #ifdef ELIBBAD
-	case ELIBBAD: return "accessing a corrupted shared library";
+    case ELIBBAD: return "accessing a corrupted shared library";
 #endif
 #ifdef ELIBEXEC
-	case ELIBEXEC: return "can not exec a shared library directly";
+    case ELIBEXEC: return "can not exec a shared library directly";
 #endif
 #ifdef ELIBMAX
-	case ELIBMAX: return
-		"attempting to link in more shared libraries than system limit";
+    case ELIBMAX: return
+	    "attempting to link in more shared libraries than system limit";
 #endif
 #ifdef ELIBSCN
-	case ELIBSCN: return ".lib section in a.out corrupted";
+    case ELIBSCN: return ".lib section in a.out corrupted";
 #endif
 #ifdef ELNRNG
-	case ELNRNG: return "link number out of range";
+    case ELNRNG: return "link number out of range";
 #endif
 #if defined(ELOOP) && (!defined(ENOENT) || (ELOOP != ENOENT))
-	case ELOOP: return "too many levels of symbolic links";
+    case ELOOP: return "too many levels of symbolic links";
 #endif
 #ifdef EMFILE
-	case EMFILE: return "too many open files";
+    case EMFILE: return "too many open files";
 #endif
 #ifdef EMLINK
-	case EMLINK: return "too many links";
+    case EMLINK: return "too many links";
 #endif
 #ifdef EMSGSIZE
-	case EMSGSIZE: return "message too long";
+    case EMSGSIZE: return "message too long";
 #endif
 #ifdef EMULTIHOP
-	case EMULTIHOP: return "multihop attempted";
+    case EMULTIHOP: return "multihop attempted";
 #endif
 #ifdef ENAMETOOLONG
-	case ENAMETOOLONG: return "file name too long";
+    case ENAMETOOLONG: return "file name too long";
 #endif
 #ifdef ENAVAIL
-	case ENAVAIL: return "not available";
+    case ENAVAIL: return "not available";
 #endif
 #ifdef ENET
-	case ENET: return "ENET";
+    case ENET: return "ENET";
 #endif
 #ifdef ENETDOWN
-	case ENETDOWN: return "network is down";
+    case ENETDOWN: return "network is down";
 #endif
 #ifdef ENETRESET
-	case ENETRESET: return "network dropped connection on reset";
+    case ENETRESET: return "network dropped connection on reset";
 #endif
 #ifdef ENETUNREACH
-	case ENETUNREACH: return "network is unreachable";
+    case ENETUNREACH: return "network is unreachable";
 #endif
 #ifdef ENFILE
-	case ENFILE: return "file table overflow";
+    case ENFILE: return "file table overflow";
 #endif
 #ifdef ENOANO
-	case ENOANO: return "anode table overflow";
+    case ENOANO: return "anode table overflow";
 #endif
 #if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
-	case ENOBUFS: return "no buffer space available";
+    case ENOBUFS: return "no buffer space available";
 #endif
 #ifdef ENOCSI
-	case ENOCSI: return "no CSI structure available";
+    case ENOCSI: return "no CSI structure available";
 #endif
 #if defined(ENODATA) && (!defined(ECONNREFUSED) || (ENODATA != ECONNREFUSED))
-	case ENODATA: return "no data available";
+    case ENODATA: return "no data available";
 #endif
 #ifdef ENODEV
-	case ENODEV: return "no such device";
+    case ENODEV: return "no such device";
 #endif
 #ifdef ENOENT
-	case ENOENT: return "no such file or directory";
+    case ENOENT: return "no such file or directory";
 #endif
 #ifdef ENOEXEC
-	case ENOEXEC: return "exec format error";
+    case ENOEXEC: return "exec format error";
 #endif
 #ifdef ENOLCK
-	case ENOLCK: return "no locks available";
+    case ENOLCK: return "no locks available";
 #endif
 #if defined(ENOLINK) && (!defined(ESOCKTNOSUPPORT) || (ESOCKTNOSUPPORT != ENOLINK))
-	case ENOLINK: return "link has been severed";
+    case ENOLINK: return "link has been severed";
 #endif
 #ifdef ENOMEM
-	case ENOMEM: return "not enough memory";
+    case ENOMEM: return "not enough memory";
 #endif
 #ifdef ENOMSG
-	case ENOMSG: return "no message of desired type";
+    case ENOMSG: return "no message of desired type";
 #endif
 #ifdef ENONET
-	case ENONET: return "machine is not on the network";
+    case ENONET: return "machine is not on the network";
 #endif
 #ifdef ENOPKG
-	case ENOPKG: return "package not installed";
+    case ENOPKG: return "package not installed";
 #endif
 #if defined(ENOPROTOOPT) && (!defined(EPFNOSUPPORT) || (EPFNOSUPPORT != ENOPROTOOPT))
-	case ENOPROTOOPT: return "bad protocol option";
+    case ENOPROTOOPT: return "bad protocol option";
 #endif
 #ifdef ENOSPC
-	case ENOSPC: return "no space left on device";
+    case ENOSPC: return "no space left on device";
 #endif
 #if defined(ENOSR) && (!defined(ENAMETOOLONG) || (ENAMETOOLONG != ENOSR))
-	case ENOSR: return "out of stream resources";
+    case ENOSR: return "out of stream resources";
 #endif
 #if defined(ENOSTR) && (!defined(ENOTTY) || (ENOTTY != ENOSTR))
-	case ENOSTR: return "not a stream device";
+    case ENOSTR: return "not a stream device";
 #endif
 #ifdef ENOSYM
-	case ENOSYM: return "unresolved symbol name";
+    case ENOSYM: return "unresolved symbol name";
 #endif
 #ifdef ENOSYS
-	case ENOSYS: return "function not implemented";
+    case ENOSYS: return "function not implemented";
 #endif
 #ifdef ENOTBLK
-	case ENOTBLK: return "block device required";
+    case ENOTBLK: return "block device required";
 #endif
 #ifdef ENOTCONN
-	case ENOTCONN: return "socket is not connected";
+    case ENOTCONN: return "socket is not connected";
 #endif
 #ifdef ENOTDIR
-	case ENOTDIR: return "not a directory";
+    case ENOTDIR: return "not a directory";
 #endif
 #if defined(ENOTEMPTY) && (!defined(EEXIST) || (ENOTEMPTY != EEXIST))
-	case ENOTEMPTY: return "directory not empty";
+    case ENOTEMPTY: return "directory not empty";
 #endif
 #ifdef ENOTNAM
-	case ENOTNAM: return "not a name file";
+    case ENOTNAM: return "not a name file";
 #endif
 #ifdef ENOTSOCK
-	case ENOTSOCK: return "socket operation on non-socket";
+    case ENOTSOCK: return "socket operation on non-socket";
 #endif
 #ifdef ENOTSUP
-	case ENOTSUP: return "operation not supported";
+    case ENOTSUP: return "operation not supported";
 #endif
 #ifdef ENOTTY
-	case ENOTTY: return "inappropriate device for ioctl";
+    case ENOTTY: return "inappropriate device for ioctl";
 #endif
 #ifdef ENOTUNIQ
-	case ENOTUNIQ: return "name not unique on network";
+    case ENOTUNIQ: return "name not unique on network";
 #endif
 #ifdef ENXIO
-	case ENXIO: return "no such device or address";
+    case ENXIO: return "no such device or address";
 #endif
 #if defined(EOPNOTSUPP) &&  (!defined(ENOTSUP) || (ENOTSUP != EOPNOTSUPP))
-	case EOPNOTSUPP: return "operation not supported on socket";
+    case EOPNOTSUPP: return "operation not supported on socket";
 #endif
 #if defined(EOVERFLOW) && (!defined(EFBIG) || (EOVERFLOW != EFBIG)) && (!defined(EINVAL) || (EOVERFLOW != EINVAL))
-        case EOVERFLOW: return "file too big";
+    case EOVERFLOW: return "file too big";
 #endif
 #ifdef EPERM
-	case EPERM: return "not owner";
+    case EPERM: return "not owner";
 #endif
 #if defined(EPFNOSUPPORT) && (!defined(ENOLCK) || (ENOLCK != EPFNOSUPPORT))
-	case EPFNOSUPPORT: return "protocol family not supported";
+    case EPFNOSUPPORT: return "protocol family not supported";
 #endif
 #ifdef EPIPE
-	case EPIPE: return "broken pipe";
+    case EPIPE: return "broken pipe";
 #endif
 #ifdef EPROCLIM
-	case EPROCLIM: return "too many processes";
+    case EPROCLIM: return "too many processes";
 #endif
 #ifdef EPROCUNAVAIL
-	case EPROCUNAVAIL: return "bad procedure for program";
+    case EPROCUNAVAIL: return "bad procedure for program";
 #endif
 #ifdef EPROGMISMATCH
-	case EPROGMISMATCH: return "program version wrong";
+    case EPROGMISMATCH: return "program version wrong";
 #endif
 #ifdef EPROGUNAVAIL
-	case EPROGUNAVAIL: return "RPC program not available";
+    case EPROGUNAVAIL: return "RPC program not available";
 #endif
 #ifdef EPROTO
-	case EPROTO: return "protocol error";
+    case EPROTO: return "protocol error";
 #endif
 #ifdef EPROTONOSUPPORT
-	case EPROTONOSUPPORT: return "protocol not supported";
+    case EPROTONOSUPPORT: return "protocol not supported";
 #endif
 #ifdef EPROTOTYPE
-	case EPROTOTYPE: return "protocol wrong type for socket";
+    case EPROTOTYPE: return "protocol wrong type for socket";
 #endif
 #ifdef ERANGE
-	case ERANGE: return "math result unrepresentable";
+    case ERANGE: return "math result unrepresentable";
 #endif
 #if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
-	case EREFUSED: return "EREFUSED";
+    case EREFUSED: return "EREFUSED";
 #endif
 #ifdef EREMCHG
-	case EREMCHG: return "remote address changed";
+    case EREMCHG: return "remote address changed";
 #endif
 #ifdef EREMDEV
-	case EREMDEV: return "remote device";
+    case EREMDEV: return "remote device";
 #endif
 #ifdef EREMOTE
-	case EREMOTE: return "pathname hit remote file system";
+    case EREMOTE: return "pathname hit remote file system";
 #endif
 #ifdef EREMOTEIO
-	case EREMOTEIO: return "remote i/o error";
+    case EREMOTEIO: return "remote i/o error";
 #endif
 #ifdef EREMOTERELEASE
-	case EREMOTERELEASE: return "EREMOTERELEASE";
+    case EREMOTERELEASE: return "EREMOTERELEASE";
 #endif
 #ifdef EROFS
-	case EROFS: return "read-only file system";
+    case EROFS: return "read-only file system";
 #endif
 #ifdef ERPCMISMATCH
-	case ERPCMISMATCH: return "RPC version is wrong";
+    case ERPCMISMATCH: return "RPC version is wrong";
 #endif
 #ifdef ERREMOTE
-	case ERREMOTE: return "object is remote";
+    case ERREMOTE: return "object is remote";
 #endif
 #ifdef ESHUTDOWN
-	case ESHUTDOWN: return "can't send after socket shutdown";
+    case ESHUTDOWN: return "can't send after socket shutdown";
 #endif
 #ifdef ESOCKTNOSUPPORT
-	case ESOCKTNOSUPPORT: return "socket type not supported";
+    case ESOCKTNOSUPPORT: return "socket type not supported";
 #endif
 #ifdef ESPIPE
-	case ESPIPE: return "invalid seek";
+    case ESPIPE: return "invalid seek";
 #endif
 #ifdef ESRCH
-	case ESRCH: return "no such process";
+    case ESRCH: return "no such process";
 #endif
 #ifdef ESRMNT
-	case ESRMNT: return "srmount error";
+    case ESRMNT: return "srmount error";
 #endif
 #ifdef ESTALE
-	case ESTALE: return "stale remote file handle";
+    case ESTALE: return "stale remote file handle";
 #endif
 #ifdef ESUCCESS
-	case ESUCCESS: return "Error 0";
+    case ESUCCESS: return "Error 0";
 #endif
 #if defined(ETIME) && (!defined(ELOOP) || (ETIME != ELOOP))
-	case ETIME: return "timer expired";
+    case ETIME: return "timer expired";
 #endif
 #if defined(ETIMEDOUT) && (!defined(ENOSTR) || (ETIMEDOUT != ENOSTR))
-	case ETIMEDOUT: return "connection timed out";
+    case ETIMEDOUT: return "connection timed out";
 #endif
 #ifdef ETOOMANYREFS
-	case ETOOMANYREFS: return "too many references: can't splice";
+    case ETOOMANYREFS: return "too many references: can't splice";
 #endif
 #ifdef ETXTBSY
-	case ETXTBSY: return "text file or pseudo-device busy";
+    case ETXTBSY: return "text file or pseudo-device busy";
 #endif
 #ifdef EUCLEAN
-	case EUCLEAN: return "structure needs cleaning";
+    case EUCLEAN: return "structure needs cleaning";
 #endif
 #ifdef EUNATCH
-	case EUNATCH: return "protocol driver not attached";
+    case EUNATCH: return "protocol driver not attached";
 #endif
 #ifdef EUSERS
-	case EUSERS: return "too many users";
+    case EUSERS: return "too many users";
 #endif
 #ifdef EVERSION
-	case EVERSION: return "version mismatch";
+    case EVERSION: return "version mismatch";
 #endif
 #if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
-	case EWOULDBLOCK: return "operation would block";
+    case EWOULDBLOCK: return "operation would block";
 #endif
 #ifdef EXDEV
-	case EXDEV: return "cross-domain link";
+    case EXDEV: return "cross-domain link";
 #endif
 #ifdef EXFULL
-	case EXFULL: return "message tables full";
+    case EXFULL: return "message tables full";
 #endif
-	default:
+    default:
 #ifdef NO_STRERROR
-	    return "unknown POSIX error";
+	return "unknown POSIX error";
 #else
-	    return strerror(err);
+	return strerror(err);
 #endif
     }
 }
@@ -921,9 +917,9 @@ Tcl_ErrnoMsg(err)
  *	Return a textual identifier for a signal number.
  *
  * Results:
- *	This procedure returns a machine-readable textual identifier
- *	that corresponds to sig.  The identifier is the same as the
- *	#define name in signal.h.
+ *	This procedure returns a machine-readable textual identifier that
+ *	corresponds to sig.  The identifier is the same as the #define name in
+ *	signal.h.
  *
  * Side effects:
  *	None.
@@ -932,114 +928,117 @@ Tcl_ErrnoMsg(err)
  */
 
 CONST char *
-Tcl_SignalId(sig)
-    int sig;			/* Number of signal. */
+Tcl_SignalId(
+     int sig)			/* Number of signal. */
 {
     switch (sig) {
 #ifdef SIGABRT
-	case SIGABRT: return "SIGABRT";
+    case SIGABRT: return "SIGABRT";
 #endif
 #ifdef SIGALRM
-	case SIGALRM: return "SIGALRM";
+    case SIGALRM: return "SIGALRM";
 #endif
 #ifdef SIGBUS
-	case SIGBUS: return "SIGBUS";
+    case SIGBUS: return "SIGBUS";
 #endif
 #ifdef SIGCHLD
-	case SIGCHLD: return "SIGCHLD";
+    case SIGCHLD: return "SIGCHLD";
 #endif
 #if defined(SIGCLD) && (!defined(SIGCHLD) || (SIGCLD != SIGCHLD))
-	case SIGCLD: return "SIGCLD";
+    case SIGCLD: return "SIGCLD";
 #endif
 #ifdef SIGCONT
-	case SIGCONT: return "SIGCONT";
+    case SIGCONT: return "SIGCONT";
 #endif
 #if defined(SIGEMT) && (!defined(SIGXCPU) || (SIGEMT != SIGXCPU))
-	case SIGEMT: return "SIGEMT";
+    case SIGEMT: return "SIGEMT";
 #endif
 #ifdef SIGFPE
-	case SIGFPE: return "SIGFPE";
+    case SIGFPE: return "SIGFPE";
 #endif
 #ifdef SIGHUP
-	case SIGHUP: return "SIGHUP";
+    case SIGHUP: return "SIGHUP";
 #endif
 #ifdef SIGILL
-	case SIGILL: return "SIGILL";
+    case SIGILL: return "SIGILL";
 #endif
 #ifdef SIGINT
-	case SIGINT: return "SIGINT";
+    case SIGINT: return "SIGINT";
 #endif
 #ifdef SIGIO
-	case SIGIO: return "SIGIO";
+    case SIGIO: return "SIGIO";
 #endif
 #if defined(SIGIOT) && (!defined(SIGABRT) || (SIGIOT != SIGABRT))
-	case SIGIOT: return "SIGIOT";
+    case SIGIOT: return "SIGIOT";
 #endif
 #ifdef SIGKILL
-	case SIGKILL: return "SIGKILL";
+    case SIGKILL: return "SIGKILL";
 #endif
 #if defined(SIGLOST) && (!defined(SIGIOT) || (SIGLOST != SIGIOT)) && (!defined(SIGURG) || (SIGLOST != SIGURG)) && (!defined(SIGPROF) || (SIGLOST != SIGPROF)) && (!defined(SIGIO) || (SIGLOST != SIGIO))
-	case SIGLOST: return "SIGLOST";
+    case SIGLOST: return "SIGLOST";
 #endif
 #ifdef SIGPIPE
-	case SIGPIPE: return "SIGPIPE";
+    case SIGPIPE: return "SIGPIPE";
 #endif
 #if defined(SIGPOLL) && (!defined(SIGIO) || (SIGPOLL != SIGIO))
-	case SIGPOLL: return "SIGPOLL";
+    case SIGPOLL: return "SIGPOLL";
 #endif
 #ifdef SIGPROF
-	case SIGPROF: return "SIGPROF";
+    case SIGPROF: return "SIGPROF";
 #endif
 #if defined(SIGPWR) && (!defined(SIGXFSZ) || (SIGPWR != SIGXFSZ)) && (!defined(SIGLOST) || (SIGPWR != SIGLOST))
-	case SIGPWR: return "SIGPWR";
+    case SIGPWR: return "SIGPWR";
 #endif
 #ifdef SIGQUIT
-	case SIGQUIT: return "SIGQUIT";
+    case SIGQUIT: return "SIGQUIT";
 #endif
 #if defined(SIGSEGV) && (!defined(SIGBUS) || (SIGSEGV != SIGBUS))
-	case SIGSEGV: return "SIGSEGV";
+    case SIGSEGV: return "SIGSEGV";
 #endif
 #ifdef SIGSTOP
-	case SIGSTOP: return "SIGSTOP";
+    case SIGSTOP: return "SIGSTOP";
 #endif
 #ifdef SIGSYS
-	case SIGSYS: return "SIGSYS";
+    case SIGSYS: return "SIGSYS";
 #endif
 #ifdef SIGTERM
-	case SIGTERM: return "SIGTERM";
+    case SIGTERM: return "SIGTERM";
 #endif
 #ifdef SIGTRAP
-	case SIGTRAP: return "SIGTRAP";
+    case SIGTRAP: return "SIGTRAP";
 #endif
 #ifdef SIGTSTP
-	case SIGTSTP: return "SIGTSTP";
+    case SIGTSTP: return "SIGTSTP";
 #endif
 #ifdef SIGTTIN
-	case SIGTTIN: return "SIGTTIN";
+    case SIGTTIN: return "SIGTTIN";
 #endif
 #ifdef SIGTTOU
-	case SIGTTOU: return "SIGTTOU";
+    case SIGTTOU: return "SIGTTOU";
 #endif
 #if defined(SIGURG) && (!defined(SIGIO) || (SIGURG != SIGIO))
-	case SIGURG: return "SIGURG";
+    case SIGURG: return "SIGURG";
 #endif
 #if defined(SIGUSR1) && (!defined(SIGIO) || (SIGUSR1 != SIGIO))
-	case SIGUSR1: return "SIGUSR1";
+    case SIGUSR1: return "SIGUSR1";
 #endif
 #if defined(SIGUSR2) && (!defined(SIGURG) || (SIGUSR2 != SIGURG))
-	case SIGUSR2: return "SIGUSR2";
+    case SIGUSR2: return "SIGUSR2";
 #endif
 #ifdef SIGVTALRM
-	case SIGVTALRM: return "SIGVTALRM";
+    case SIGVTALRM: return "SIGVTALRM";
 #endif
 #ifdef SIGWINCH
-	case SIGWINCH: return "SIGWINCH";
+    case SIGWINCH: return "SIGWINCH";
 #endif
 #ifdef SIGXCPU
-	case SIGXCPU: return "SIGXCPU";
+    case SIGXCPU: return "SIGXCPU";
 #endif
 #ifdef SIGXFSZ
-	case SIGXFSZ: return "SIGXFSZ";
+    case SIGXFSZ: return "SIGXFSZ";
+#endif
+#if defined(SIGINFO) && (!defined(SIGPWR) || (SIGINFO != SIGPWR))
+    case SIGINFO: return "SIGINFO";
 #endif
     }
     return "unknown signal";
@@ -1053,9 +1052,8 @@ Tcl_SignalId(sig)
  *	Return a human-readable message describing a signal.
  *
  * Results:
- *	This procedure returns a string describing sig that should
- *	make sense to a human.  It may not be easy for a machine
- *	to parse.
+ *	This procedure returns a string describing sig that should make sense
+ *	to a human.  It may not be easy for a machine to parse.
  *
  * Side effects:
  *	None.
@@ -1064,115 +1062,126 @@ Tcl_SignalId(sig)
  */
 
 CONST char *
-Tcl_SignalMsg(sig)
-    int sig;			/* Number of signal. */
+Tcl_SignalMsg(
+     int sig)			/* Number of signal. */
 {
     switch (sig) {
 #ifdef SIGABRT
-	case SIGABRT: return "SIGABRT";
+    case SIGABRT: return "SIGABRT";
 #endif
 #ifdef SIGALRM
-	case SIGALRM: return "alarm clock";
+    case SIGALRM: return "alarm clock";
 #endif
 #ifdef SIGBUS
-	case SIGBUS: return "bus error";
+    case SIGBUS: return "bus error";
 #endif
 #ifdef SIGCHLD
-	case SIGCHLD: return "child status changed";
+    case SIGCHLD: return "child status changed";
 #endif
 #if defined(SIGCLD) && (!defined(SIGCHLD) || (SIGCLD != SIGCHLD))
-	case SIGCLD: return "child status changed";
+    case SIGCLD: return "child status changed";
 #endif
 #ifdef SIGCONT
-	case SIGCONT: return "continue after stop";
+    case SIGCONT: return "continue after stop";
 #endif
 #if defined(SIGEMT) && (!defined(SIGXCPU) || (SIGEMT != SIGXCPU))
-	case SIGEMT: return "EMT instruction";
+    case SIGEMT: return "EMT instruction";
 #endif
 #ifdef SIGFPE
-	case SIGFPE: return "floating-point exception";
+    case SIGFPE: return "floating-point exception";
 #endif
 #ifdef SIGHUP
-	case SIGHUP: return "hangup";
+    case SIGHUP: return "hangup";
 #endif
 #ifdef SIGILL
-	case SIGILL: return "illegal instruction";
+    case SIGILL: return "illegal instruction";
 #endif
 #ifdef SIGINT
-	case SIGINT: return "interrupt";
+    case SIGINT: return "interrupt";
 #endif
 #ifdef SIGIO
-	case SIGIO: return "input/output possible on file";
+    case SIGIO: return "input/output possible on file";
 #endif
 #if defined(SIGIOT) && (!defined(SIGABRT) || (SIGABRT != SIGIOT))
-	case SIGIOT: return "IOT instruction";
+    case SIGIOT: return "IOT instruction";
 #endif
 #ifdef SIGKILL
-	case SIGKILL: return "kill signal";
+    case SIGKILL: return "kill signal";
 #endif
 #if defined(SIGLOST) && (!defined(SIGIOT) || (SIGLOST != SIGIOT)) && (!defined(SIGURG) || (SIGLOST != SIGURG)) && (!defined(SIGPROF) || (SIGLOST != SIGPROF)) && (!defined(SIGIO) || (SIGLOST != SIGIO))
-	case SIGLOST: return "resource lost";
+    case SIGLOST: return "resource lost";
 #endif
 #ifdef SIGPIPE
-	case SIGPIPE: return "write on pipe with no readers";
+    case SIGPIPE: return "write on pipe with no readers";
 #endif
 #if defined(SIGPOLL) && (!defined(SIGIO) || (SIGPOLL != SIGIO))
-	case SIGPOLL: return "input/output possible on file";
+    case SIGPOLL: return "input/output possible on file";
 #endif
 #ifdef SIGPROF
-	case SIGPROF: return "profiling alarm";
+    case SIGPROF: return "profiling alarm";
 #endif
 #if defined(SIGPWR) && (!defined(SIGXFSZ) || (SIGPWR != SIGXFSZ)) && (!defined(SIGLOST) || (SIGPWR != SIGLOST))
-	case SIGPWR: return "power-fail restart";
+    case SIGPWR: return "power-fail restart";
 #endif
 #ifdef SIGQUIT
-	case SIGQUIT: return "quit signal";
+    case SIGQUIT: return "quit signal";
 #endif
 #if defined(SIGSEGV) && (!defined(SIGBUS) || (SIGSEGV != SIGBUS))
-	case SIGSEGV: return "segmentation violation";
+    case SIGSEGV: return "segmentation violation";
 #endif
 #ifdef SIGSTOP
-	case SIGSTOP: return "stop";
+    case SIGSTOP: return "stop";
 #endif
 #ifdef SIGSYS
-	case SIGSYS: return "bad argument to system call";
+    case SIGSYS: return "bad argument to system call";
 #endif
 #ifdef SIGTERM
-	case SIGTERM: return "software termination signal";
+    case SIGTERM: return "software termination signal";
 #endif
 #ifdef SIGTRAP
-	case SIGTRAP: return "trace trap";
+    case SIGTRAP: return "trace trap";
 #endif
 #ifdef SIGTSTP
-	case SIGTSTP: return "stop signal from tty";
+    case SIGTSTP: return "stop signal from tty";
 #endif
 #ifdef SIGTTIN
-	case SIGTTIN: return "background tty read";
+    case SIGTTIN: return "background tty read";
 #endif
 #ifdef SIGTTOU
-	case SIGTTOU: return "background tty write";
+    case SIGTTOU: return "background tty write";
 #endif
 #if defined(SIGURG) && (!defined(SIGIO) || (SIGURG != SIGIO))
-	case SIGURG: return "urgent I/O condition";
+    case SIGURG: return "urgent I/O condition";
 #endif
 #if defined(SIGUSR1) && (!defined(SIGIO) || (SIGUSR1 != SIGIO))
-	case SIGUSR1: return "user-defined signal 1";
+    case SIGUSR1: return "user-defined signal 1";
 #endif
 #if defined(SIGUSR2) && (!defined(SIGURG) || (SIGUSR2 != SIGURG))
-	case SIGUSR2: return "user-defined signal 2";
+    case SIGUSR2: return "user-defined signal 2";
 #endif
 #ifdef SIGVTALRM
-	case SIGVTALRM: return "virtual time alarm";
+    case SIGVTALRM: return "virtual time alarm";
 #endif
 #ifdef SIGWINCH
-	case SIGWINCH: return "window changed";
+    case SIGWINCH: return "window changed";
 #endif
 #ifdef SIGXCPU
-	case SIGXCPU: return "exceeded CPU time limit";
+    case SIGXCPU: return "exceeded CPU time limit";
 #endif
 #ifdef SIGXFSZ
-	case SIGXFSZ: return "exceeded file size limit";
+    case SIGXFSZ: return "exceeded file size limit";
+#endif
+#if defined(SIGINFO) && (!defined(SIGPWR) || (SIGINFO != SIGPWR))
+    case SIGINFO: return "information request";
 #endif
     }
     return "unknown signal";
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclPreserve.c b/generic/tclPreserve.c
index 006c92b..0dc669c 100644
--- a/generic/tclPreserve.c
+++ b/generic/tclPreserve.c
@@ -1,69 +1,71 @@
-/* 
+/*
  * tclPreserve.c --
  *
- *	This file contains a collection of procedures that are used
- *	to make sure that widget records and other data structures
- *	aren't reallocated when there are nested procedures that
- *	depend on their existence.
+ *	This file contains a collection of functions that are used to make
+ *	sure that widget records and other data structures aren't reallocated
+ *	when there are nested functions that depend on their existence.
  *
  * Copyright (c) 1991-1994 The Regents of the University of California.
  * Copyright (c) 1994-1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * The following data structure is used to keep track of all the
- * Tcl_Preserve calls that are still in effect.  It grows as needed
- * to accommodate any number of calls in effect.
+ * The following data structure is used to keep track of all the Tcl_Preserve
+ * calls that are still in effect. It grows as needed to accommodate any
+ * number of calls in effect.
  */
 
 typedef struct {
     ClientData clientData;	/* Address of preserved block. */
-    int refCount;		/* Number of Tcl_Preserve calls in effect
-				 * for block. */
+    int refCount;		/* Number of Tcl_Preserve calls in effect for
+				 * block. */
     int mustFree;		/* Non-zero means Tcl_EventuallyFree was
 				 * called while a Tcl_Preserve call was in
-				 * effect, so the structure must be freed
-				 * when refCount becomes zero. */
-    Tcl_FreeProc *freeProc;	/* Procedure to call to free. */
+				 * effect, so the structure must be freed when
+				 * refCount becomes zero. */
+    Tcl_FreeProc *freeProc;	/* Function to call to free. */
 } Reference;
 
-static Reference *refArray;	/* First in array of references. */
-static int spaceAvl = 0;	/* Total number of structures available
-				 * at *firstRefPtr. */
-static int inUse = 0;		/* Count of structures currently in use
-				 * in refArray. */
-#define INITIAL_SIZE 2
+/*
+ * Global data structures used to hold the list of preserved data references.
+ * These variables are protected by "preserveMutex".
+ */
+
+static Reference *refArray = NULL;	/* First in array of references. */
+static int spaceAvl = 0;	/* Total number of structures available at
+				 * *firstRefPtr. */
+static int inUse = 0;		/* Count of structures currently in use in
+				 * refArray. */
 TCL_DECLARE_MUTEX(preserveMutex)/* To protect the above statics */
 
+#define INITIAL_SIZE	2	/* Initial number of reference slots to make */
+
 /*
- * The following data structure is used to keep track of whether an
- * arbitrary block of memory has been deleted.  This is used by the
- * TclHandle code to avoid the more time-expensive algorithm of
- * Tcl_Preserve().  This mechanism is mainly used when we have lots of
- * references to a few big, expensive objects that we don't want to live
- * any longer than necessary.
+ * The following data structure is used to keep track of whether an arbitrary
+ * block of memory has been deleted. This is used by the TclHandle code to
+ * avoid the more time-expensive algorithm of Tcl_Preserve(). This mechanism
+ * is mainly used when we have lots of references to a few big, expensive
+ * objects that we don't want to live any longer than necessary.
  */
 
 typedef struct HandleStruct {
-    VOID *ptr;			/* Pointer to the memory block being
-				 * tracked.  This field will become NULL when
-				 * the memory block is deleted.  This field
-				 * must be the first in the structure. */
+    void *ptr;			/* Pointer to the memory block being tracked.
+				 * This field will become NULL when the memory
+				 * block is deleted. This field must be the
+				 * first in the structure. */
 #ifdef TCL_MEM_DEBUG
-    VOID *ptr2;			/* Backup copy of the abpve pointer used to
+    void *ptr2;			/* Backup copy of the above pointer used to
 				 * ensure that the contents of the handle are
 				 * not changed by anyone else. */
 #endif
     int refCount;		/* Number of TclHandlePreserve() calls in
 				 * effect on this handle. */
 } HandleStruct;
-
-
 
 /*
  *----------------------------------------------------------------------
@@ -83,12 +85,12 @@ typedef struct HandleStruct {
 
 	/* ARGSUSED */
 void
-TclFinalizePreserve()
+TclFinalizePreserve(void)
 {
     Tcl_MutexLock(&preserveMutex);
     if (spaceAvl != 0) {
         ckfree((char *) refArray);
-        refArray = (Reference *) NULL;
+        refArray = NULL;
         inUse = 0;
         spaceAvl = 0;
     }
@@ -100,34 +102,34 @@ TclFinalizePreserve()
  *
  * Tcl_Preserve --
  *
- *	This procedure is used by a procedure to declare its interest
- *	in a particular block of memory, so that the block will not be
- *	reallocated until a matching call to Tcl_Release has been made.
+ *	This function is used by a function to declare its interest in a
+ *	particular block of memory, so that the block will not be reallocated
+ *	until a matching call to Tcl_Release has been made.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Information is retained so that the block of memory will
- *	not be freed until at least the matching call to Tcl_Release.
+ *	Information is retained so that the block of memory will not be freed
+ *	until at least the matching call to Tcl_Release.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_Preserve(clientData)
-    ClientData clientData;	/* Pointer to malloc'ed block of memory. */
+Tcl_Preserve(
+    ClientData clientData)	/* Pointer to malloc'ed block of memory. */
 {
     Reference *refPtr;
     int i;
 
     /*
-     * See if there is already a reference for this pointer.  If so,
-     * just increment its reference count.
+     * See if there is already a reference for this pointer. If so, just
+     * increment its reference count.
      */
 
     Tcl_MutexLock(&preserveMutex);
-    for (i = 0, refPtr = refArray; i < inUse; i++, refPtr++) {
+    for (i=0, refPtr=refArray ; i<inUse ; i++, refPtr++) {
 	if (refPtr->clientData == clientData) {
 	    refPtr->refCount++;
 	    Tcl_MutexUnlock(&preserveMutex);
@@ -136,26 +138,14 @@ Tcl_Preserve(clientData)
     }
 
     /*
-     * Make a reference array if it doesn't already exist, or make it
-     * bigger if it is full.
+     * Make a reference array if it doesn't already exist, or make it bigger
+     * if it is full.
      */
 
     if (inUse == spaceAvl) {
-	if (spaceAvl == 0) {
-	    refArray = (Reference *) ckalloc((unsigned)
-		    (INITIAL_SIZE*sizeof(Reference)));
-	    spaceAvl = INITIAL_SIZE;
-	} else {
-	    Reference *new;
-
-	    new = (Reference *) ckalloc((unsigned)
-		    (2*spaceAvl*sizeof(Reference)));
-	    memcpy((VOID *) new, (VOID *) refArray,
-                    spaceAvl*sizeof(Reference));
-	    ckfree((char *) refArray);
-	    refArray = new;
-	    spaceAvl *= 2;
-	}
+	spaceAvl = spaceAvl ? 2*spaceAvl : INITIAL_SIZE;
+	refArray = (Reference *) ckrealloc((char *) refArray,
+		spaceAvl * sizeof(Reference));
     }
 
     /*
@@ -176,71 +166,79 @@ Tcl_Preserve(clientData)
  *
  * Tcl_Release --
  *
- *	This procedure is called to cancel a previous call to
- *	Tcl_Preserve, thereby allowing a block of memory to be
- *	freed (if no one else cares about it).
+ *	This function is called to cancel a previous call to Tcl_Preserve,
+ *	thereby allowing a block of memory to be freed (if no one else cares
+ *	about it).
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If Tcl_EventuallyFree has been called for clientData, and if
- *	no other call to Tcl_Preserve is still in effect, the block of
- *	memory is freed.
+ *	If Tcl_EventuallyFree has been called for clientData, and if no other
+ *	call to Tcl_Preserve is still in effect, the block of memory is freed.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_Release(clientData)
-    ClientData clientData;	/* Pointer to malloc'ed block of memory. */
+Tcl_Release(
+    ClientData clientData)	/* Pointer to malloc'ed block of memory. */
 {
     Reference *refPtr;
-    int mustFree;
-    Tcl_FreeProc *freeProc;
     int i;
 
     Tcl_MutexLock(&preserveMutex);
-    for (i = 0, refPtr = refArray; i < inUse; i++, refPtr++) {
+    for (i=0, refPtr=refArray ; i<inUse ; i++, refPtr++) {
+	int mustFree;
+	Tcl_FreeProc *freeProc;
+
 	if (refPtr->clientData != clientData) {
 	    continue;
 	}
-	refPtr->refCount--;
-	if (refPtr->refCount == 0) {
-
-            /*
-             * Must remove information from the slot before calling freeProc
-             * to avoid reentrancy problems if the freeProc calls Tcl_Preserve
-             * on the same clientData. Copy down the last reference in the
-             * array to overwrite the current slot.
-             */
-
-            freeProc = refPtr->freeProc;
-            mustFree = refPtr->mustFree;
-	    inUse--;
-	    if (i < inUse) {
-		refArray[i] = refArray[inUse];
-	    }
-	    if (mustFree) {
-		if (freeProc == TCL_DYNAMIC) {
-		    ckfree((char *) clientData);
-		} else {
-		    Tcl_MutexUnlock(&preserveMutex);
-		    (*freeProc)((char *) clientData);
-		    return;
-		}
-	    }
+
+	if (--refPtr->refCount != 0) {
+	    Tcl_MutexUnlock(&preserveMutex);
+	    return;
 	}
+
+	/*
+	 * Must remove information from the slot before calling freeProc to
+	 * avoid reentrancy problems if the freeProc calls Tcl_Preserve on the
+	 * same clientData. Copy down the last reference in the array to
+	 * overwrite the current slot.
+	 */
+
+	freeProc = refPtr->freeProc;
+	mustFree = refPtr->mustFree;
+	inUse--;
+	if (i < inUse) {
+	    refArray[i] = refArray[inUse];
+	}
+
+	/*
+	 * Now committed to disposing the data. But first, we've patched up
+	 * all the global data structures so we should release the mutex now.
+	 * Only then should we dabble around with potentially-slow memory
+	 * managers...
+	 */
+
 	Tcl_MutexUnlock(&preserveMutex);
+	if (mustFree) {
+	    if (freeProc == TCL_DYNAMIC) {
+		ckfree((char *) clientData);
+	    } else {
+		(*freeProc)((char *) clientData);
+	    }
+	}
 	return;
     }
     Tcl_MutexUnlock(&preserveMutex);
 
     /*
-     * Reference not found.  This is a bug in the caller.
+     * Reference not found. This is a bug in the caller.
      */
 
-    panic("Tcl_Release couldn't find reference for 0x%x", clientData);
+    Tcl_Panic("Tcl_Release couldn't find reference for 0x%x", PTR2UINT(clientData));
 }
 
 /*
@@ -248,10 +246,9 @@ Tcl_Release(clientData)
  *
  * Tcl_EventuallyFree --
  *
- *	Free up a block of memory, unless a call to Tcl_Preserve is in
- *	effect for that block.  In this case, defer the free until all
- *	calls to Tcl_Preserve have been undone by matching calls to
- *	Tcl_Release.
+ *	Free up a block of memory, unless a call to Tcl_Preserve is in effect
+ *	for that block. In this case, defer the free until all calls to
+ *	Tcl_Preserve have been undone by matching calls to Tcl_Release.
  *
  * Results:
  *	None.
@@ -263,16 +260,16 @@ Tcl_Release(clientData)
  */
 
 void
-Tcl_EventuallyFree(clientData, freeProc)
-    ClientData clientData;	/* Pointer to malloc'ed block of memory. */
-    Tcl_FreeProc *freeProc;	/* Procedure to actually do free. */
+Tcl_EventuallyFree(
+    ClientData clientData,	/* Pointer to malloc'ed block of memory. */
+    Tcl_FreeProc *freeProc)	/* Function to actually do free. */
 {
     Reference *refPtr;
     int i;
 
     /*
-     * See if there is a reference for this pointer.  If so, set its
-     * "mustFree" flag (the flag had better not be set already!).
+     * See if there is a reference for this pointer. If so, set its "mustFree"
+     * flag (the flag had better not be set already!).
      */
 
     Tcl_MutexLock(&preserveMutex);
@@ -281,7 +278,8 @@ Tcl_EventuallyFree(clientData, freeProc)
 	    continue;
 	}
 	if (refPtr->mustFree) {
-	    panic("Tcl_EventuallyFree called twice for 0x%x\n", clientData);
+	    Tcl_Panic("Tcl_EventuallyFree called twice for 0x%x",
+		    PTR2UINT(clientData));
         }
         refPtr->mustFree = 1;
 	refPtr->freeProc = freeProc;
@@ -306,31 +304,29 @@ Tcl_EventuallyFree(clientData, freeProc)
  *
  * TclHandleCreate --
  *
- *	Allocate a handle that contains enough information to determine
- *	if an arbitrary malloc'd block has been deleted.  This is 
- *	used to avoid the more time-expensive algorithm of Tcl_Preserve().
+ *	Allocate a handle that contains enough information to determine if an
+ *	arbitrary malloc'd block has been deleted. This is used to avoid the
+ *	more time-expensive algorithm of Tcl_Preserve().
  *
  * Results:
  *	The return value is a TclHandle that refers to the given malloc'd
- *	block.  Doubly dereferencing the returned handle will give
- *	back the pointer to the block, or will give NULL if the block has
- *	been deleted.
+ *	block. Doubly dereferencing the returned handle will give back the
+ *	pointer to the block, or will give NULL if the block has been deleted.
  *
  * Side effects:
- *	The caller must keep track of this handle (generally by storing
- *	it in a field in the malloc'd block) and call TclHandleFree()
- *	on this handle when the block is deleted.  Everything else that
- *	wishes to keep track of whether the malloc'd block has been deleted
- *	should use calls to TclHandlePreserve() and TclHandleRelease()
- *	on the associated handle.
+ *	The caller must keep track of this handle (generally by storing it in
+ *	a field in the malloc'd block) and call TclHandleFree() on this handle
+ *	when the block is deleted. Everything else that wishes to keep track
+ *	of whether the malloc'd block has been deleted should use calls to
+ *	TclHandlePreserve() and TclHandleRelease() on the associated handle.
  *
  *---------------------------------------------------------------------------
  */
 
 TclHandle
-TclHandleCreate(ptr)
-    VOID *ptr;			/* Pointer to an arbitrary block of memory
-				 * to be tracked for deletion.  Must not be
+TclHandleCreate(
+    void *ptr)			/* Pointer to an arbitrary block of memory to
+				 * be tracked for deletion. Must not be
 				 * NULL. */
 {
     HandleStruct *handlePtr;
@@ -349,11 +345,10 @@ TclHandleCreate(ptr)
  *
  * TclHandleFree --
  *
- *	Called when the arbitrary malloc'd block associated with the
- *	handle is being deleted.  Modifies the handle so that doubly
- *	dereferencing it will give NULL.  This informs any user of the
- *	handle that the block of memory formerly referenced by the
- *	handle has been freed.
+ *	Called when the arbitrary malloc'd block associated with the handle is
+ *	being deleted. Modifies the handle so that doubly dereferencing it
+ *	will give NULL. This informs any user of the handle that the block of
+ *	memory formerly referenced by the handle has been freed.
  *
  * Results:
  *	None.
@@ -365,21 +360,21 @@ TclHandleCreate(ptr)
  */
 
 void
-TclHandleFree(handle)
-    TclHandle handle;		/* Previously created handle associated
-				 * with a malloc'd block that is being
-				 * deleted.  The handle is modified so that
-				 * doubly dereferencing it will give NULL. */
+TclHandleFree(
+    TclHandle handle)		/* Previously created handle associated with a
+				 * malloc'd block that is being deleted. The
+				 * handle is modified so that doubly
+				 * dereferencing it will give NULL. */
 {
     HandleStruct *handlePtr;
 
     handlePtr = (HandleStruct *) handle;
 #ifdef TCL_MEM_DEBUG
     if (handlePtr->refCount == 0x61616161) {
-	panic("using previously disposed TclHandle %x", handlePtr);
+	Tcl_Panic("using previously disposed TclHandle %x", handlePtr);
     }
     if (handlePtr->ptr2 != handlePtr->ptr) {
-	panic("someone has changed the block referenced by the handle %x\nfrom %x to %x",
+	Tcl_Panic("someone has changed the block referenced by the handle %x\nfrom %x to %x",
 		handlePtr, handlePtr->ptr2, handlePtr->ptr);
     }
 #endif
@@ -394,36 +389,35 @@ TclHandleFree(handle)
  *
  * TclHandlePreserve --
  *
- *	Declare an interest in the arbitrary malloc'd block associated
- *	with the handle.  
+ *	Declare an interest in the arbitrary malloc'd block associated with
+ *	the handle.
  *
  * Results:
  *	The return value is the handle argument, with its ref count
  *	incremented.
  *
  * Side effects:
- *	For each call to TclHandlePreserve(), there should be a matching
- *	call to TclHandleRelease() when the caller is no longer interested
- *	in the malloc'd block associated with the handle.
+ *	For each call to TclHandlePreserve(), there should be a matching call
+ *	to TclHandleRelease() when the caller is no longer interested in the
+ *	malloc'd block associated with the handle.
  *
  *---------------------------------------------------------------------------
  */
 
 TclHandle
-TclHandlePreserve(handle)
-    TclHandle handle;		/* Declare an interest in the block of
-				 * memory referenced by this handle. */
+TclHandlePreserve(
+    TclHandle handle)		/* Declare an interest in the block of memory
+				 * referenced by this handle. */
 {
     HandleStruct *handlePtr;
 
     handlePtr = (HandleStruct *) handle;
 #ifdef TCL_MEM_DEBUG
     if (handlePtr->refCount == 0x61616161) {
-	panic("using previously disposed TclHandle %x", handlePtr);
+	Tcl_Panic("using previously disposed TclHandle %x", handlePtr);
     }
-    if ((handlePtr->ptr != NULL)
-	    && (handlePtr->ptr != handlePtr->ptr2)) {
-	panic("someone has changed the block referenced by the handle %x\nfrom %x to %x",
+    if ((handlePtr->ptr != NULL) && (handlePtr->ptr != handlePtr->ptr2)) {
+	Tcl_Panic("someone has changed the block referenced by the handle %x\nfrom %x to %x",
 		handlePtr, handlePtr->ptr2, handlePtr->ptr);
     }
 #endif
@@ -437,35 +431,34 @@ TclHandlePreserve(handle)
  *
  * TclHandleRelease --
  *
- *	This procedure is called to release an interest in the malloc'd
- *	block associated with the handle.
+ *	This function is called to release an interest in the malloc'd block
+ *	associated with the handle.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The ref count of the handle is decremented.  If the malloc'd block
- *	has been freed and if no one is using the handle any more, the
- *	handle will be reclaimed.
+ *	The ref count of the handle is decremented. If the malloc'd block has
+ *	been freed and if no one is using the handle any more, the handle will
+ *	be reclaimed.
  *
  *---------------------------------------------------------------------------
  */
- 
+
 void
-TclHandleRelease(handle)
-    TclHandle handle;		/* Unregister interest in the block of
-				 * memory referenced by this handle. */
+TclHandleRelease(
+    TclHandle handle)		/* Unregister interest in the block of memory
+				 * referenced by this handle. */
 {
     HandleStruct *handlePtr;
 
     handlePtr = (HandleStruct *) handle;
 #ifdef TCL_MEM_DEBUG
     if (handlePtr->refCount == 0x61616161) {
-	panic("using previously disposed TclHandle %x", handlePtr);
+	Tcl_Panic("using previously disposed TclHandle %x", handlePtr);
     }
-    if ((handlePtr->ptr != NULL)
-	    && (handlePtr->ptr != handlePtr->ptr2)) {
-	panic("someone has changed the block referenced by the handle %x\nfrom %x to %x",
+    if ((handlePtr->ptr != NULL) && (handlePtr->ptr != handlePtr->ptr2)) {
+	Tcl_Panic("someone has changed the block referenced by the handle %x\nfrom %x to %x",
 		handlePtr, handlePtr->ptr2, handlePtr->ptr);
     }
 #endif
@@ -474,4 +467,11 @@ TclHandleRelease(handle)
 	ckfree((char *) handlePtr);
     }
 }
-    
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclProc.c b/generic/tclProc.c
index abfd152..d58e8da 100644
--- a/generic/tclProc.c
+++ b/generic/tclProc.c
@@ -1,15 +1,16 @@
 /*
  * tclProc.c --
  *
- *	This file contains routines that implement Tcl procedures,
- *	including the "proc" and "uplevel" commands.
+ *	This file contains routines that implement Tcl procedures, including
+ *	the "proc" and "uplevel" commands.
  *
  * Copyright (c) 1987-1993 The Regents of the University of California.
  * Copyright (c) 1994-1998 Sun Microsystems, Inc.
+ * Copyright (c) 2004-2006 Miguel Sofer
  * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
@@ -19,19 +20,30 @@
  * Prototypes for static functions in this file
  */
 
-static void	ProcBodyDup _ANSI_ARGS_((Tcl_Obj *srcPtr, Tcl_Obj *dupPtr));
-static void	ProcBodyFree _ANSI_ARGS_((Tcl_Obj *objPtr));
-static int	ProcBodySetFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-		Tcl_Obj *objPtr));
-static void	ProcBodyUpdateString _ANSI_ARGS_((Tcl_Obj *objPtr));
-static int	ProcCompileProc _ANSI_ARGS_((Tcl_Interp *interp,
-		    Proc *procPtr, Tcl_Obj *bodyPtr, Namespace *nsPtr,
-		    CONST char *description, CONST char *procName,
-		    Proc **procPtrPtr));
-static  int	ProcessProcResultCode _ANSI_ARGS_((Tcl_Interp *interp,
-		    char *procName, int nameLen, int returnCode));
-static int	TclCompileNoOp _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Parse *parsePtr, struct CompileEnv *envPtr));
+static void		DupLambdaInternalRep(Tcl_Obj *objPtr,
+			    Tcl_Obj *copyPtr);
+static void		FreeLambdaInternalRep(Tcl_Obj *objPtr);
+static int		InitArgsAndLocals(Tcl_Interp *interp,
+			    Tcl_Obj *procNameObj, int skip);
+static void		InitResolvedLocals(Tcl_Interp *interp,
+			    ByteCode *codePtr, Var *defPtr,
+	                    Namespace *nsPtr);
+static void             InitLocalCache(Proc *procPtr);
+static int		PushProcCallFrame(ClientData clientData,
+			    register Tcl_Interp *interp, int objc,
+			    Tcl_Obj *CONST objv[], int isLambda);
+static void		ProcBodyDup(Tcl_Obj *srcPtr, Tcl_Obj *dupPtr);
+static void		ProcBodyFree(Tcl_Obj *objPtr);
+static int              ProcWrongNumArgs(Tcl_Interp *interp, int skip);
+static void		MakeProcError(Tcl_Interp *interp,
+			    Tcl_Obj *procNameObj);
+static void		MakeLambdaError(Tcl_Interp *interp,
+			    Tcl_Obj *procNameObj);
+static int		SetLambdaFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
+static int		ProcCompileProc(Tcl_Interp *interp, Proc *procPtr,
+			    Tcl_Obj *bodyPtr, Namespace *nsPtr,
+			    CONST char *description, CONST char *procName,
+			    Proc **procPtrPtr);
 
 /*
  * The ProcBodyObjType type
@@ -39,10 +51,44 @@ static int	TclCompileNoOp _ANSI_ARGS_((Tcl_Interp *interp,
 
 Tcl_ObjType tclProcBodyType = {
     "procbody",			/* name for this type */
-    ProcBodyFree,		/* FreeInternalRep procedure */
-    ProcBodyDup,		/* DupInternalRep procedure */
-    ProcBodyUpdateString,	/* UpdateString procedure */
-    ProcBodySetFromAny		/* SetFromAny procedure */
+    ProcBodyFree,		/* FreeInternalRep function */
+    ProcBodyDup,		/* DupInternalRep function */
+    NULL,			/* UpdateString function; Tcl_GetString and
+				 * Tcl_GetStringFromObj should panic
+				 * instead. */
+    NULL			/* SetFromAny function; Tcl_ConvertToType
+				 * should panic instead. */
+};
+
+/*
+ * The [upvar]/[uplevel] level reference type. Uses the twoPtrValue field,
+ * encoding the type of level reference in ptr1 and the actual parsed out
+ * offset in ptr2.
+ *
+ * Uses the default behaviour throughout, and never disposes of the string
+ * rep; it's just a cache type.
+ */
+
+static Tcl_ObjType levelReferenceType = {
+    "levelReference",
+    NULL, NULL, NULL, NULL
+};
+
+/*
+ * The type of lambdas. Note that every lambda will *always* have a string
+ * representation.
+ *
+ * Internally, ptr1 is a pointer to a Proc instance that is not bound to a
+ * command name, and ptr2 is a pointer to the namespace that the Proc instance
+ * will execute within.
+ */
+
+static Tcl_ObjType lambdaType = {
+    "lambdaExpr",		/* name */
+    FreeLambdaInternalRep,	/* freeIntRepProc */
+    DupLambdaInternalRep,	/* dupIntRepProc */
+    NULL,			/* updateStringProc */
+    SetLambdaFromAny		/* setFromAnyProc */
 };
 
 /*
@@ -50,7 +96,7 @@ Tcl_ObjType tclProcBodyType = {
  *
  * Tcl_ProcObjCmd --
  *
- *	This object-based procedure is invoked to process the "proc" Tcl
+ *	This object-based function is invoked to process the "proc" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
@@ -64,11 +110,11 @@ Tcl_ObjType tclProcBodyType = {
 
 	/* ARGSUSED */
 int
-Tcl_ProcObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ProcObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
     register Interp *iPtr = (Interp *) interp;
     Proc *procPtr;
@@ -84,47 +130,48 @@ Tcl_ProcObjCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * Determine the namespace where the procedure should reside. Unless
-     * the command name includes namespace qualifiers, this will be the
-     * current namespace.
+     * Determine the namespace where the procedure should reside. Unless the
+     * command name includes namespace qualifiers, this will be the current
+     * namespace.
      */
 
     fullName = TclGetString(objv[1]);
-    TclGetNamespaceForQualName(interp, fullName, (Namespace *) NULL,
-	    0, &nsPtr, &altNsPtr, &cxtNsPtr, &procName);
+    TclGetNamespaceForQualName(interp, fullName, NULL, 0,
+	    &nsPtr, &altNsPtr, &cxtNsPtr, &procName);
 
     if (nsPtr == NULL) {
-        Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"can't create procedure \"", fullName,
-		"\": unknown namespace", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "can't create procedure \"", fullName,
+		"\": unknown namespace", NULL);
+	return TCL_ERROR;
     }
     if (procName == NULL) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"can't create procedure \"", fullName,
-		"\": bad procedure name", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "can't create procedure \"", fullName,
+		"\": bad procedure name", NULL);
+	return TCL_ERROR;
     }
     if ((nsPtr != iPtr->globalNsPtr)
 	    && (procName != NULL) && (procName[0] == ':')) {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"can't create procedure \"", procName,
+	Tcl_AppendResult(interp, "can't create procedure \"", procName,
 		"\" in non-global namespace with name starting with \":\"",
-	        (char *) NULL);
-        return TCL_ERROR;
+		NULL);
+	return TCL_ERROR;
     }
 
     /*
-     *  Create the data structure to represent the procedure.
+     * Create the data structure to represent the procedure.
      */
+
     if (TclCreateProc(interp, nsPtr, procName, objv[2], objv[3],
-        &procPtr) != TCL_OK) {
-        return TCL_ERROR;
+	    &procPtr) != TCL_OK) {
+	Tcl_AddErrorInfo(interp, "\n    (creating proc \"");
+	Tcl_AddErrorInfo(interp, procName);
+	Tcl_AddErrorInfo(interp, "\")");
+	return TCL_ERROR;
     }
 
     /*
-     * Now create a command for the procedure. This will initially be in
-     * the current namespace unless the procedure's name included namespace
+     * Now create a command for the procedure. This will initially be in the
+     * current namespace unless the procedure's name included namespace
      * qualifiers. To create the new command in the right namespace, we
      * generate a fully qualified name for it.
      */
@@ -136,12 +183,11 @@ Tcl_ProcObjCmd(dummy, interp, objc, objv)
     }
     Tcl_DStringAppend(&ds, procName, -1);
 
-    Tcl_CreateCommand(interp, Tcl_DStringValue(&ds), TclProcInterpProc,
-	    (ClientData) procPtr, TclProcDeleteProc);
     cmd = Tcl_CreateObjCommand(interp, Tcl_DStringValue(&ds),
 	    TclObjInterpProc, (ClientData) procPtr, TclProcDeleteProc);
 
     Tcl_DStringFree(&ds);
+
     /*
      * Now initialize the new procedure's cmdPtr field. This will be used
      * later when the procedure is called to determine what namespace the
@@ -151,113 +197,133 @@ Tcl_ProcObjCmd(dummy, interp, objc, objv)
 
     procPtr->cmdPtr = (Command *) cmd;
 
-#ifdef TCL_TIP280
-    /* TIP #280 Remember the line the procedure body is starting on. In a
-     * Byte code context we ask the engine to provide us with the necessary
+    /*
+     * TIP #280: Remember the line the procedure body is starting on. In a
+     * bytecode context we ask the engine to provide us with the necessary
      * information. This is for the initialization of the byte code compiler
      * when the body is used for the first time.
+     *
+     * This code is nearly identical to the #280 code in SetLambdaFromAny, see
+     * this file. The differences are the different index of the body in the
+     * line array of the context, and the lamdba code requires some special
+     * processing. Find a way to factor the common elements into a single
+     * function.
      */
 
     if (iPtr->cmdFramePtr) {
-        CmdFrame context = *iPtr->cmdFramePtr;
-
-	if (context.type == TCL_LOCATION_BC) {
-	    TclGetSrcInfoForPc (&context);
-	    /* May get path in context */
-	} else if (context.type == TCL_LOCATION_SOURCE) {
-	    /* context now holds another reference */
-	    Tcl_IncrRefCount (context.data.eval.path);
-	}
+	CmdFrame *contextPtr;
 
-	/* type == TCL_LOCATION_PREBC implies that 'line' is NULL here!  We
-	 * cannot assume that 'line' is valid here, we have to check. If the
-	 * outer context is an eval (bc, prebc, eval) we do not save any
-	 * information. Counting relative to the beginning of the proc body is
-	 * more sensible than counting relative to the outer eval block.
-	 */
+	contextPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame));
+	*contextPtr = *iPtr->cmdFramePtr;
 
-	if ((context.type == TCL_LOCATION_SOURCE) &&
-	    context.line &&
-	    (context.nline >= 4) &&
-	    (context.line [3] >= 0)) {
-	    int       isNew;
-	    Tcl_HashEntry* hePtr;
-	    CmdFrame* cfPtr = (CmdFrame*) ckalloc (sizeof (CmdFrame));
-
-	    cfPtr->level    = -1;
-	    cfPtr->type     = context.type;
-	    cfPtr->line     = (int*) ckalloc (sizeof (int));
-	    cfPtr->line [0] = context.line [3];
-	    cfPtr->nline    = 1;
-	    cfPtr->framePtr = NULL;
-	    cfPtr->nextPtr  = NULL;
-
-	    if (context.type == TCL_LOCATION_SOURCE) {
-	        cfPtr->data.eval.path = context.data.eval.path;
-		/* Transfer of reference. The reference going away (release of
-		 * the context) is replaced by the reference in the
-		 * constructed cmdframe */
-	    } else {
-	        cfPtr->type = TCL_LOCATION_EVAL;
-		cfPtr->data.eval.path = NULL;
-	    }
+	if (contextPtr->type == TCL_LOCATION_BC) {
+	    /*
+	     * Retrieve source information from the bytecode, if possible. If
+	     * the information is retrieved successfully, context.type will be
+	     * TCL_LOCATION_SOURCE and the reference held by
+	     * context.data.eval.path will be counted.
+	     */
 
-	    cfPtr->cmd.str.cmd = NULL;
-	    cfPtr->cmd.str.len = 0;
+	    TclGetSrcInfoForPc(contextPtr);
+	} else if (contextPtr->type == TCL_LOCATION_SOURCE) {
+	    /*
+	     * The copy into 'context' up above has created another reference
+	     * to 'context.data.eval.path'; account for it.
+	     */
 
-	    hePtr = Tcl_CreateHashEntry (iPtr->linePBodyPtr, (char*) procPtr,
-					 &isNew);
-	    if (!isNew) {
-		/*
-		 * Get the old command frame and release it.  See also
-		 * TclProcCleanupProc in this file. Currently it seems as if
-		 * only the procbodytest::proc command of the testsuite is
-		 * able to trigger this situation.
-		 */
+	    Tcl_IncrRefCount(contextPtr->data.eval.path);
+	}
+
+	if (contextPtr->type == TCL_LOCATION_SOURCE) {
+	    /*
+	     * We can account for source location within a proc only if the
+	     * proc body was not created by substitution.
+	     */
+
+	    if (contextPtr->line
+		    && (contextPtr->nline >= 4) && (contextPtr->line[3] >= 0)) {
+		int isNew;
+		Tcl_HashEntry* hePtr;
+		CmdFrame *cfPtr = (CmdFrame *) ckalloc(sizeof(CmdFrame));
+
+		cfPtr->level = -1;
+		cfPtr->type = contextPtr->type;
+		cfPtr->line = (int *) ckalloc(sizeof(int));
+		cfPtr->line[0] = contextPtr->line[3];
+		cfPtr->nline = 1;
+		cfPtr->framePtr = NULL;
+		cfPtr->nextPtr = NULL;
+
+		cfPtr->data.eval.path = contextPtr->data.eval.path;
+		Tcl_IncrRefCount(cfPtr->data.eval.path);
+
+		cfPtr->cmd.str.cmd = NULL;
+		cfPtr->cmd.str.len = 0;
+
+		hePtr = Tcl_CreateHashEntry(iPtr->linePBodyPtr, (char *) procPtr, &isNew);
+		if (!isNew) {
+		    /*
+		     * Get the old command frame and release it.  See also
+		     * TclProcCleanupProc in this file. Currently it seems as
+		     * if only the procbodytest::proc command of the testsuite
+		     * is able to trigger this situation.
+		     */
 
-		CmdFrame* cfOldPtr = (CmdFrame *) Tcl_GetHashValue(hePtr);
+		    CmdFrame* cfOldPtr = (CmdFrame *) Tcl_GetHashValue(hePtr);
 
-		if (cfOldPtr->type == TCL_LOCATION_SOURCE) {
-		    Tcl_DecrRefCount(cfOldPtr->data.eval.path);
-		    cfOldPtr->data.eval.path = NULL;
+		    if (cfOldPtr->type == TCL_LOCATION_SOURCE) {
+			Tcl_DecrRefCount(cfOldPtr->data.eval.path);
+			cfOldPtr->data.eval.path = NULL;
+		    }
+		    ckfree((char *) cfOldPtr->line);
+		    cfOldPtr->line = NULL;
+		    ckfree((char *) cfOldPtr);
 		}
-		ckfree((char *) cfOldPtr->line);
-		cfOldPtr->line = NULL;
-		ckfree((char *) cfOldPtr);
+		Tcl_SetHashValue(hePtr, cfPtr);
 	    }
-	    Tcl_SetHashValue (hePtr, cfPtr);
+
+	    /*
+	     * 'contextPtr' is going out of scope; account for the reference that
+	     * it's holding to the path name.
+	     */
+
+	    Tcl_DecrRefCount(contextPtr->data.eval.path);
+	    contextPtr->data.eval.path = NULL;
 	}
+	TclStackFree(interp, contextPtr);
     }
-#endif
 
     /*
-     * Optimize for noop procs: if the body is not precompiled (like a TclPro
+     * Optimize for no-op procs: if the body is not precompiled (like a TclPro
      * procbody), and the argument list is just "args" and the body is empty,
-     * define a compileProc to compile a noop.
+     * define a compileProc to compile a no-op.
      *
      * Notes:
-     *   - cannot be done for any argument list without having different
-     *     compiled/not-compiled behaviour in the "wrong argument #" case,
-     *     or making this code much more complicated. In any case, it doesn't
-     *     seem to make a lot of sense to verify the number of arguments we
-     *     are about to ignore ...
-     *   - could be enhanced to handle also non-empty bodies that contain
-     *     only comments; however, parsing the body will slow down the
-     *     compilation of all procs whose argument list is just _args_ */
+     *	 - cannot be done for any argument list without having different
+     *	   compiled/not-compiled behaviour in the "wrong argument #" case, or
+     *	   making this code much more complicated. In any case, it doesn't
+     *	   seem to make a lot of sense to verify the number of arguments we
+     *	   are about to ignore ...
+     *	 - could be enhanced to handle also non-empty bodies that contain only
+     *	   comments; however, parsing the body will slow down the compilation
+     *	   of all procs whose argument list is just _args_
+     */
 
     if (objv[3]->typePtr == &tclProcBodyType) {
 	goto done;
     }
 
-    procArgs = Tcl_GetString(objv[2]);
+    procArgs = TclGetString(objv[2]);
 
     while (*procArgs == ' ') {
 	procArgs++;
     }
 
     if ((procArgs[0] == 'a') && (strncmp(procArgs, "args", 4) == 0)) {
+	int numBytes;
+
 	procArgs +=4;
-	while(*procArgs != '\0') {
+	while (*procArgs != '\0') {
 	    if (*procArgs != ' ') {
 		goto done;
 	    }
@@ -268,12 +334,9 @@ Tcl_ProcObjCmd(dummy, interp, objc, objv)
 	 * The argument list is just "args"; check the body
 	 */
 
-	procBody = Tcl_GetString(objv[3]);
-	while (*procBody != '\0') {
-	    if (!isspace(UCHAR(*procBody))) {
-		goto done;
-	    }
-	    procBody++;
+	procBody = Tcl_GetStringFromObj(objv[3], &numBytes);
+	if (TclParseAllWhiteSpace(procBody, numBytes) < numBytes) {
+	    goto done;
 	}
 
 	/*
@@ -283,7 +346,7 @@ Tcl_ProcObjCmd(dummy, interp, objc, objv)
 	((Command *) cmd)->compileProc = TclCompileNoOp;
     }
 
- done:
+  done:
     return TCL_OK;
 }
 
@@ -292,34 +355,35 @@ Tcl_ProcObjCmd(dummy, interp, objc, objv)
  *
  * TclCreateProc --
  *
- *	Creates the data associated with a Tcl procedure definition.
- *	This procedure knows how to handle two types of body objects:
- *	strings and procbody. Strings are the traditional (and common) value
- *	for bodies, procbody are values created by extensions that have
- *	loaded a previously compiled script.
+ *	Creates the data associated with a Tcl procedure definition. This
+ *	function knows how to handle two types of body objects: strings and
+ *	procbody. Strings are the traditional (and common) value for bodies,
+ *	procbody are values created by extensions that have loaded a
+ *	previously compiled script.
  *
  * Results:
- *	Returns TCL_OK on success, along with a pointer to a Tcl
- *	procedure definition in procPtrPtr.  This definition should
- *	be freed by calling TclCleanupProc() when it is no longer
- *	needed.  Returns TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK on success, along with a pointer to a Tcl procedure
+ *	definition in procPtrPtr where the cmdPtr field is not initialised.
+ *	This definition should be freed by calling TclProcCleanupProc() when
+ *	it is no longer needed. Returns TCL_ERROR if anything goes wrong.
  *
  * Side effects:
- *	If anything goes wrong, this procedure returns an error
- *	message in the interpreter.
+ *	If anything goes wrong, this function returns an error message in the
+ *	interpreter.
  *
  *----------------------------------------------------------------------
  */
+
 int
-TclCreateProc(interp, nsPtr, procName, argsPtr, bodyPtr, procPtrPtr)
-    Tcl_Interp *interp;         /* interpreter containing proc */
-    Namespace *nsPtr;           /* namespace containing this proc */
-    CONST char *procName;       /* unqualified name of this proc */
-    Tcl_Obj *argsPtr;           /* description of arguments */
-    Tcl_Obj *bodyPtr;           /* command body */
-    Proc **procPtrPtr;          /* returns:  pointer to proc data */
+TclCreateProc(
+    Tcl_Interp *interp,		/* Interpreter containing proc. */
+    Namespace *nsPtr,		/* Namespace containing this proc. */
+    CONST char *procName,	/* Unqualified name of this proc. */
+    Tcl_Obj *argsPtr,		/* Description of arguments. */
+    Tcl_Obj *bodyPtr,		/* Command body. */
+    Proc **procPtrPtr)		/* Returns: pointer to proc data. */
 {
-    Interp *iPtr = (Interp*)interp;
+    Interp *iPtr = (Interp *) interp;
     CONST char **argArray = NULL;
 
     register Proc *procPtr;
@@ -330,46 +394,44 @@ TclCreateProc(interp, nsPtr, procName, argsPtr, bodyPtr, procPtrPtr)
     int precompiled = 0;
 
     if (bodyPtr->typePtr == &tclProcBodyType) {
-        /*
-         * Because the body is a TclProProcBody, the actual body is already
-         * compiled, and it is not shared with anyone else, so it's OK not to
-         * unshare it (as a matter of fact, it is bad to unshare it, because
-         * there may be no source code).
-         *
-         * We don't create and initialize a Proc structure for the procedure;
-         * rather, we use what is in the body object. Note that
-         * we initialize its cmdPtr field below after we've created the command
-         * for the procedure. We increment the ref count of the Proc struct
-         * since the command (soon to be created) will be holding a reference
-         * to it.
-         */
-
-        procPtr = (Proc *) bodyPtr->internalRep.otherValuePtr;
-        procPtr->iPtr = iPtr;
-        procPtr->refCount++;
-        precompiled = 1;
+	/*
+	 * Because the body is a TclProProcBody, the actual body is already
+	 * compiled, and it is not shared with anyone else, so it's OK not to
+	 * unshare it (as a matter of fact, it is bad to unshare it, because
+	 * there may be no source code).
+	 *
+	 * We don't create and initialize a Proc structure for the procedure;
+	 * rather, we use what is in the body object. We increment the ref
+	 * count of the Proc struct since the command (soon to be created)
+	 * will be holding a reference to it.
+	 */
+
+	procPtr = bodyPtr->internalRep.twoPtrValue.ptr1;
+	procPtr->iPtr = iPtr;
+	procPtr->refCount++;
+	precompiled = 1;
     } else {
-        /*
-         * If the procedure's body object is shared because its string value is
-         * identical to, e.g., the body of another procedure, we must create a
-         * private copy for this procedure to use. Such sharing of procedure
-         * bodies is rare but can cause problems. A procedure body is compiled
-         * in a context that includes the number of compiler-allocated "slots"
-         * for local variables. Each formal parameter is given a local variable
-         * slot (the "procPtr->numCompiledLocals = numArgs" assignment
-         * below). This means that the same code can not be shared by two
-         * procedures that have a different number of arguments, even if their
-         * bodies are identical. Note that we don't use Tcl_DuplicateObj since
-         * we would not want any bytecode internal representation.
-         */
-
-        if (Tcl_IsShared(bodyPtr)) {
-#ifdef TCL_TIP280
+	/*
+	 * If the procedure's body object is shared because its string value
+	 * is identical to, e.g., the body of another procedure, we must
+	 * create a private copy for this procedure to use. Such sharing of
+	 * procedure bodies is rare but can cause problems. A procedure body
+	 * is compiled in a context that includes the number of "slots"
+	 * allocated by the compiler for local variables. There is a local
+	 * variable slot for each formal parameter (the
+	 * "procPtr->numCompiledLocals = numArgs" assignment below). This
+	 * means that the same code can not be shared by two procedures that
+	 * have a different number of arguments, even if their bodies are
+	 * identical. Note that we don't use Tcl_DuplicateObj since we would
+	 * not want any bytecode internal representation.
+	 */
+
+	if (Tcl_IsShared(bodyPtr)) {
 	    Tcl_Obj* sharedBodyPtr = bodyPtr;
-#endif
-            bytes = Tcl_GetStringFromObj(bodyPtr, &length);
-            bodyPtr = Tcl_NewStringObj(bytes, length);
-#ifdef TCL_TIP280
+
+	    bytes = TclGetStringFromObj(bodyPtr, &length);
+	    bodyPtr = Tcl_NewStringObj(bytes, length);
+
 	    /*
 	     * TIP #280.
 	     * Ensure that the continuation line data for the original body is
@@ -377,121 +439,111 @@ TclCreateProc(interp, nsPtr, procName, argsPtr, bodyPtr, procPtrPtr)
 	     */
 
 	    TclContinuationsCopy (bodyPtr, sharedBodyPtr);
-#endif
-        }
+	}
 
-        /*
-         * Create and initialize a Proc structure for the procedure. Note that
-         * we initialize its cmdPtr field below after we've created the command
-         * for the procedure. We increment the ref count of the procedure's
-         * body object since there will be a reference to it in the Proc
-         * structure.
-         */
+	/*
+	 * Create and initialize a Proc structure for the procedure. We
+	 * increment the ref count of the procedure's body object since there
+	 * will be a reference to it in the Proc structure.
+	 */
 
-        Tcl_IncrRefCount(bodyPtr);
+	Tcl_IncrRefCount(bodyPtr);
 
-        procPtr = (Proc *) ckalloc(sizeof(Proc));
-        procPtr->iPtr = iPtr;
-        procPtr->refCount = 1;
-        procPtr->bodyPtr = bodyPtr;
-        procPtr->numArgs  = 0;	/* actual argument count is set below. */
-        procPtr->numCompiledLocals = 0;
-        procPtr->firstLocalPtr = NULL;
-        procPtr->lastLocalPtr = NULL;
+	procPtr = (Proc *) ckalloc(sizeof(Proc));
+	procPtr->iPtr = iPtr;
+	procPtr->refCount = 1;
+	procPtr->bodyPtr = bodyPtr;
+	procPtr->numArgs = 0;	/* Actual argument count is set below. */
+	procPtr->numCompiledLocals = 0;
+	procPtr->firstLocalPtr = NULL;
+	procPtr->lastLocalPtr = NULL;
     }
 
     /*
-     * Break up the argument list into argument specifiers, then process
-     * each argument specifier.
-     * If the body is precompiled, processing is limited to checking that
-     * the the parsed argument is consistent with the one stored in the
-     * Proc.
-     * THIS FAILS IF THE ARG LIST OBJECT'S STRING REP CONTAINS NULLS.
+     * Break up the argument list into argument specifiers, then process each
+     * argument specifier. If the body is precompiled, processing is limited
+     * to checking that the parsed argument is consistent with the one stored
+     * in the Proc.
+     *
+     * THIS FAILS IF THE ARG LIST OBJECT'S STRING REP CONTAINS NULS.
      */
 
-    args = Tcl_GetStringFromObj(argsPtr, &length);
+    args = TclGetStringFromObj(argsPtr, &length);
     result = Tcl_SplitList(interp, args, &numArgs, &argArray);
     if (result != TCL_OK) {
-        goto procError;
+	goto procError;
     }
 
     if (precompiled) {
-        if (numArgs > procPtr->numArgs) {
-            char buf[64 + TCL_INTEGER_SPACE + TCL_INTEGER_SPACE];
-            sprintf(buf, "\": arg list contains %d entries, precompiled header expects %d",
-                    numArgs, procPtr->numArgs);
-            Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                    "procedure \"", procName,
-                    buf, (char *) NULL);
-            goto procError;
-        }
-        localPtr = procPtr->firstLocalPtr;
+	if (numArgs > procPtr->numArgs) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "procedure \"%s\": arg list contains %d entries, "
+		    "precompiled header expects %d", procName, numArgs,
+		    procPtr->numArgs));
+	    goto procError;
+	}
+	localPtr = procPtr->firstLocalPtr;
     } else {
-        procPtr->numArgs = numArgs;
-        procPtr->numCompiledLocals = numArgs;
-    }
-    for (i = 0;  i < numArgs;  i++) {
-        int fieldCount, nameLength, valueLength;
-        CONST char **fieldValues;
-
-        /*
-         * Now divide the specifier up into name and default.
-         */
-
-        result = Tcl_SplitList(interp, argArray[i], &fieldCount,
-                &fieldValues);
-        if (result != TCL_OK) {
-            goto procError;
-        }
-        if (fieldCount > 2) {
-            ckfree((char *) fieldValues);
-            Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                    "too many fields in argument specifier \"",
-                    argArray[i], "\"", (char *) NULL);
-            goto procError;
-        }
-        if ((fieldCount == 0) || (*fieldValues[0] == 0)) {
-            ckfree((char *) fieldValues);
-            Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                    "procedure \"", procName,
-                    "\" has argument with no name", (char *) NULL);
-            goto procError;
-        }
-
-        nameLength = strlen(fieldValues[0]);
-        if (fieldCount == 2) {
-            valueLength = strlen(fieldValues[1]);
-        } else {
-            valueLength = 0;
-        }
-
-        /*
-         * Check that the formal parameter name is a scalar.
-         */
-
-        p = fieldValues[0];
-        while (*p != '\0') {
-            if (*p == '(') {
-                CONST char *q = p;
-                do {
+	procPtr->numArgs = numArgs;
+	procPtr->numCompiledLocals = numArgs;
+    }
+
+    for (i = 0; i < numArgs; i++) {
+	int fieldCount, nameLength, valueLength;
+	CONST char **fieldValues;
+
+	/*
+	 * Now divide the specifier up into name and default.
+	 */
+
+	result = Tcl_SplitList(interp, argArray[i], &fieldCount,
+		&fieldValues);
+	if (result != TCL_OK) {
+	    goto procError;
+	}
+	if (fieldCount > 2) {
+	    ckfree((char *) fieldValues);
+	    Tcl_AppendResult(interp,
+		    "too many fields in argument specifier \"",
+		    argArray[i], "\"", NULL);
+	    goto procError;
+	}
+	if ((fieldCount == 0) || (*fieldValues[0] == 0)) {
+	    ckfree((char *) fieldValues);
+	    Tcl_AppendResult(interp, "argument with no name", NULL);
+	    goto procError;
+	}
+
+	nameLength = strlen(fieldValues[0]);
+	if (fieldCount == 2) {
+	    valueLength = strlen(fieldValues[1]);
+	} else {
+	    valueLength = 0;
+	}
+
+	/*
+	 * Check that the formal parameter name is a scalar.
+	 */
+
+	p = fieldValues[0];
+	while (*p != '\0') {
+	    if (*p == '(') {
+		CONST char *q = p;
+		do {
 		    q++;
 		} while (*q != '\0');
 		q--;
-		if (*q == ')') { /* we have an array element */
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		            "procedure \"", procName,
-		            "\" has formal parameter \"", fieldValues[0],
-			    "\" that is an array element",
-			    (char *) NULL);
+		if (*q == ')') {	/* We have an array element. */
+		    Tcl_AppendResult(interp, "formal parameter \"",
+			    fieldValues[0],
+			    "\" is an array element", NULL);
 		    ckfree((char *) fieldValues);
 		    goto procError;
 		}
 	    } else if ((*p == ':') && (*(p+1) == ':')) {
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		        "procedure \"", procName,
-		        "\" has formal parameter \"", fieldValues[0],
-			"\" that is not a simple name",
-			(char *) NULL);
+		Tcl_AppendResult(interp, "formal parameter \"",
+			fieldValues[0],
+			"\" is not a simple name", NULL);
 		ckfree((char *) fieldValues);
 		goto procError;
 	    }
@@ -500,116 +552,117 @@ TclCreateProc(interp, nsPtr, procName, argsPtr, bodyPtr, procPtrPtr)
 
 	if (precompiled) {
 	    /*
-	     * Compare the parsed argument with the stored one.
-	     * For the flags, we and out VAR_UNDEFINED to support bridging
-	     * precompiled <= 8.3 code in 8.4 where this is now used as an
-	     * optimization indicator.	Yes, this is a hack. -- hobbs
+	     * Compare the parsed argument with the stored one. Note that the
+	     * only flag value that makes sense at this point is VAR_ARGUMENT
+	     * (its value was kept the same as pre VarReform to simplify
+	     * tbcload's processing of older byetcodes).
+	     *
+	     * The only other flag vlaue that is important to retrieve from
+	     * precompiled procs is VAR_TEMPORARY (also unchanged). It is
+	     * needed later when retrieving the variable names.
 	     */
 
 	    if ((localPtr->nameLength != nameLength)
 		    || (strcmp(localPtr->name, fieldValues[0]))
 		    || (localPtr->frameIndex != i)
-		    || ((localPtr->flags & ~VAR_UNDEFINED)
-			    != (VAR_SCALAR | VAR_ARGUMENT))
-		    || ((localPtr->defValuePtr == NULL)
-			    && (fieldCount == 2))
-		    || ((localPtr->defValuePtr != NULL)
-			    && (fieldCount != 2))) {
-		char buf[80 + TCL_INTEGER_SPACE];
-		sprintf(buf, "\": formal parameter %d is inconsistent with precompiled body",
-			i);
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"procedure \"", procName,
-			buf, (char *) NULL);
+		    || !(localPtr->flags & VAR_ARGUMENT)
+		    || (localPtr->defValuePtr == NULL && fieldCount == 2)
+		    || (localPtr->defValuePtr != NULL && fieldCount != 2)) {
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"procedure \"%s\": formal parameter %d is "
+			"inconsistent with precompiled body", procName, i));
 		ckfree((char *) fieldValues);
 		goto procError;
 	    }
 
-            /*
-             * compare the default value if any
-             */
-
-            if (localPtr->defValuePtr != NULL) {
-                int tmpLength;
-                char *tmpPtr = Tcl_GetStringFromObj(localPtr->defValuePtr,
-                        &tmpLength);
-                if ((valueLength != tmpLength)
-                        || (strncmp(fieldValues[1], tmpPtr,
-                                (size_t) tmpLength))) {
-                    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-                            "procedure \"", procName,
-                            "\": formal parameter \"",
-                            fieldValues[0],
-                            "\" has default value inconsistent with precompiled body",
-                            (char *) NULL);
-                    ckfree((char *) fieldValues);
-                    goto procError;
-                }
-            }
-
-            localPtr = localPtr->nextPtr;
-        } else {
-            /*
-             * Allocate an entry in the runtime procedure frame's array of
-             * local variables for the argument.
-             */
-
-            localPtr = (CompiledLocal *) ckalloc((unsigned)
-                    (sizeof(CompiledLocal) - sizeof(localPtr->name)
-                            + nameLength+1));
-            if (procPtr->firstLocalPtr == NULL) {
-                procPtr->firstLocalPtr = procPtr->lastLocalPtr = localPtr;
-            } else {
-                procPtr->lastLocalPtr->nextPtr = localPtr;
-                procPtr->lastLocalPtr = localPtr;
-            }
-            localPtr->nextPtr = NULL;
-            localPtr->nameLength = nameLength;
-            localPtr->frameIndex = i;
-            localPtr->flags = VAR_SCALAR | VAR_ARGUMENT;
-            localPtr->resolveInfo = NULL;
-
-            if (fieldCount == 2) {
-                localPtr->defValuePtr =
-		    Tcl_NewStringObj(fieldValues[1], valueLength);
-                Tcl_IncrRefCount(localPtr->defValuePtr);
-            } else {
-                localPtr->defValuePtr = NULL;
-            }
-            memcpy(localPtr->name, fieldValues[0], nameLength + 1);
+	    /*
+	     * Compare the default value if any.
+	     */
+
+	    if (localPtr->defValuePtr != NULL) {
+		int tmpLength;
+		char *tmpPtr = TclGetStringFromObj(localPtr->defValuePtr,
+			&tmpLength);
+
+		if ((valueLength != tmpLength) ||
+			strncmp(fieldValues[1], tmpPtr, (size_t) tmpLength)) {
+		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			    "procedure \"%s\": formal parameter \"%s\" has "
+			    "default value inconsistent with precompiled body",
+			    procName, fieldValues[0]));
+		    ckfree((char *) fieldValues);
+		    goto procError;
+		}
+	    }
+	    if ((i == numArgs - 1)
+		    && (localPtr->nameLength == 4)
+		    && (localPtr->name[0] == 'a')
+		    && (strcmp(localPtr->name, "args") == 0)) {
+		localPtr->flags |= VAR_IS_ARGS;
+	    }
+
+	    localPtr = localPtr->nextPtr;
+	} else {
+	    /*
+	     * Allocate an entry in the runtime procedure frame's array of
+	     * local variables for the argument.
+	     */
+
+	    localPtr = (CompiledLocal *) ckalloc((unsigned)
+		    (sizeof(CompiledLocal) - sizeof(localPtr->name)
+			    + nameLength + 1));
+	    if (procPtr->firstLocalPtr == NULL) {
+		procPtr->firstLocalPtr = procPtr->lastLocalPtr = localPtr;
+	    } else {
+		procPtr->lastLocalPtr->nextPtr = localPtr;
+		procPtr->lastLocalPtr = localPtr;
+	    }
+	    localPtr->nextPtr = NULL;
+	    localPtr->nameLength = nameLength;
+	    localPtr->frameIndex = i;
+	    localPtr->flags = VAR_ARGUMENT;
+	    localPtr->resolveInfo = NULL;
+
+	    if (fieldCount == 2) {
+		localPtr->defValuePtr =
+			Tcl_NewStringObj(fieldValues[1], valueLength);
+		Tcl_IncrRefCount(localPtr->defValuePtr);
+	    } else {
+		localPtr->defValuePtr = NULL;
+	    }
+	    memcpy(localPtr->name, fieldValues[0], nameLength + 1);
+	    if ((i == numArgs - 1)
+		    && (localPtr->nameLength == 4)
+		    && (localPtr->name[0] == 'a')
+		    && (strcmp(localPtr->name, "args") == 0)) {
+		localPtr->flags |= VAR_IS_ARGS;
+	    }
 	}
 
-        ckfree((char *) fieldValues);
+	ckfree((char *) fieldValues);
     }
 
-    /*
-     * Now initialize the new procedure's cmdPtr field. This will be used
-     * later when the procedure is called to determine what namespace the
-     * procedure will run in. This will be different than the current
-     * namespace if the proc was renamed into a different namespace.
-     */
-
     *procPtrPtr = procPtr;
     ckfree((char *) argArray);
     return TCL_OK;
 
-procError:
+  procError:
     if (precompiled) {
-        procPtr->refCount--;
+	procPtr->refCount--;
     } else {
-        Tcl_DecrRefCount(bodyPtr);
-        while (procPtr->firstLocalPtr != NULL) {
-            localPtr = procPtr->firstLocalPtr;
-            procPtr->firstLocalPtr = localPtr->nextPtr;
+	Tcl_DecrRefCount(bodyPtr);
+	while (procPtr->firstLocalPtr != NULL) {
+	    localPtr = procPtr->firstLocalPtr;
+	    procPtr->firstLocalPtr = localPtr->nextPtr;
 
-            defPtr = localPtr->defValuePtr;
-            if (defPtr != NULL) {
-                Tcl_DecrRefCount(defPtr);
-            }
+	    defPtr = localPtr->defValuePtr;
+	    if (defPtr != NULL) {
+		Tcl_DecrRefCount(defPtr);
+	    }
 
-            ckfree((char *) localPtr);
-        }
-        ckfree((char *) procPtr);
+	    ckfree((char *) localPtr);
+	}
+	ckfree((char *) procPtr);
     }
     if (argArray != NULL) {
 	ckfree((char *) argArray);
@@ -622,19 +675,19 @@ procError:
  *
  * TclGetFrame --
  *
- *	Given a description of a procedure frame, such as the first
- *	argument to an "uplevel" or "upvar" command, locate the
- *	call frame for the appropriate level of procedure.
+ *	Given a description of a procedure frame, such as the first argument
+ *	to an "uplevel" or "upvar" command, locate the call frame for the
+ *	appropriate level of procedure.
  *
  * Results:
- *	The return value is -1 if an error occurred in finding the frame
- *	(in this case an error message is left in the interp's result).
- *	1 is returned if string was either a number or a number preceded
- *	by "#" and it specified a valid frame.  0 is returned if string
- *	isn't one of the two things above (in this case, the lookup
- *	acts as if string were "1").  The variable pointed to by
- *	framePtrPtr is filled in with the address of the desired frame
- *	(unless an error occurs, in which case it isn't modified).
+ *	The return value is -1 if an error occurred in finding the frame (in
+ *	this case an error message is left in the interp's result). 1 is
+ *	returned if string was either a number or a number preceded by "#" and
+ *	it specified a valid frame. 0 is returned if string isn't one of the
+ *	two things above (in this case, the lookup acts as if string were
+ *	"1"). The variable pointed to by framePtrPtr is filled in with the
+ *	address of the desired frame (unless an error occurs, in which case it
+ *	isn't modified).
  *
  * Side effects:
  *	None.
@@ -643,11 +696,11 @@ procError:
  */
 
 int
-TclGetFrame(interp, string, framePtrPtr)
-    Tcl_Interp *interp;		/* Interpreter in which to find frame. */
-    CONST char *string;		/* String describing frame. */
-    CallFrame **framePtrPtr;	/* Store pointer to frame here (or NULL
-				 * if global frame indicated). */
+TclGetFrame(
+    Tcl_Interp *interp,		/* Interpreter in which to find frame. */
+    CONST char *name,		/* String describing frame. */
+    CallFrame **framePtrPtr)	/* Store pointer to frame here (or NULL if
+				 * global frame indicated). */
 {
     register Interp *iPtr = (Interp *) interp;
     int curLevel, level, result;
@@ -658,47 +711,166 @@ TclGetFrame(interp, string, framePtrPtr)
      */
 
     result = 1;
-    curLevel = (iPtr->varFramePtr == NULL) ? 0 : iPtr->varFramePtr->level;
-    if (*string == '#') {
-	if (Tcl_GetInt(interp, string+1, &level) != TCL_OK) {
-	    return -1;
+    curLevel = iPtr->varFramePtr->level;
+    if (*name== '#') {
+	if (Tcl_GetInt(interp, name+1, &level) != TCL_OK || level < 0) {
+	    goto levelError;
+	}
+    } else if (isdigit(UCHAR(*name))) { /* INTL: digit */
+	if (Tcl_GetInt(interp, name, &level) != TCL_OK) {
+	    goto levelError;
+	}
+	level = curLevel - level;
+    } else {
+	level = curLevel - 1;
+	result = 0;
+    }
+
+    /*
+     * Figure out which frame to use, and return it to the caller.
+     */
+
+    for (framePtr = iPtr->varFramePtr; framePtr != NULL;
+	    framePtr = framePtr->callerVarPtr) {
+	if (framePtr->level == level) {
+	    break;
+	}
+    }
+    if (framePtr == NULL) {
+	goto levelError;
+    }
+
+    *framePtrPtr = framePtr;
+    return result;
+
+  levelError:
+    Tcl_ResetResult(interp);
+    Tcl_AppendResult(interp, "bad level \"", name, "\"", NULL);
+    return -1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclObjGetFrame --
+ *
+ *	Given a description of a procedure frame, such as the first argument
+ *	to an "uplevel" or "upvar" command, locate the call frame for the
+ *	appropriate level of procedure.
+ *
+ * Results:
+ *	The return value is -1 if an error occurred in finding the frame (in
+ *	this case an error message is left in the interp's result). 1 is
+ *	returned if objPtr was either a number or a number preceded by "#" and
+ *	it specified a valid frame. 0 is returned if objPtr isn't one of the
+ *	two things above (in this case, the lookup acts as if objPtr were
+ *	"1"). The variable pointed to by framePtrPtr is filled in with the
+ *	address of the desired frame (unless an error occurs, in which case it
+ *	isn't modified).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclObjGetFrame(
+    Tcl_Interp *interp,		/* Interpreter in which to find frame. */
+    Tcl_Obj *objPtr,		/* Object describing frame. */
+    CallFrame **framePtrPtr)	/* Store pointer to frame here (or NULL if
+				 * global frame indicated). */
+{
+    register Interp *iPtr = (Interp *) interp;
+    int curLevel, level, result;
+    CallFrame *framePtr;
+    CONST char *name = TclGetString(objPtr);
+
+    /*
+     * Parse object to figure out which level number to go to.
+     */
+
+    result = 1;
+    curLevel = iPtr->varFramePtr->level;
+    if (objPtr->typePtr == &levelReferenceType) {
+	if (PTR2INT(objPtr->internalRep.twoPtrValue.ptr1)) {
+	    level = curLevel - PTR2INT(objPtr->internalRep.twoPtrValue.ptr2);
+	} else {
+	    level = PTR2INT(objPtr->internalRep.twoPtrValue.ptr2);
 	}
 	if (level < 0) {
-	    levelError:
-	    Tcl_AppendResult(interp, "bad level \"", string, "\"",
-		    (char *) NULL);
-	    return -1;
+	    goto levelError;
+	}
+	/* TODO: Consider skipping the typePtr checks */
+    } else if (objPtr->typePtr == &tclIntType
+#ifndef NO_WIDE_TYPE
+	    || objPtr->typePtr == &tclWideIntType
+#endif
+	    ) {
+	if (TclGetIntFromObj(NULL, objPtr, &level) != TCL_OK || level < 0) {
+	    goto levelError;
+	}
+	level = curLevel - level;
+    } else if (*name == '#') {
+	if (Tcl_GetInt(interp, name+1, &level) != TCL_OK || level < 0) {
+	    goto levelError;
 	}
-    } else if (isdigit(UCHAR(*string))) { /* INTL: digit */
-	if (Tcl_GetInt(interp, string, &level) != TCL_OK) {
+
+	/*
+	 * Cache for future reference.
+	 *
+	 * TODO: Use the new ptrAndLongRep intrep
+	 */
+
+	TclFreeIntRep(objPtr);
+	objPtr->typePtr = &levelReferenceType;
+	objPtr->internalRep.twoPtrValue.ptr1 = (void *) 0;
+	objPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(level);
+    } else if (isdigit(UCHAR(*name))) { /* INTL: digit */
+	if (Tcl_GetInt(interp, name, &level) != TCL_OK) {
 	    return -1;
 	}
+
+	/*
+	 * Cache for future reference.
+	 *
+	 * TODO: Use the new ptrAndLongRep intrep
+	 */
+
+	TclFreeIntRep(objPtr);
+	objPtr->typePtr = &levelReferenceType;
+	objPtr->internalRep.twoPtrValue.ptr1 = (void *) 1;
+	objPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(level);
 	level = curLevel - level;
     } else {
+	/*
+	 * Don't cache as the object *isn't* a level reference.
+	 */
+
 	level = curLevel - 1;
 	result = 0;
     }
 
     /*
-     * Figure out which frame to use, and modify the interpreter so
-     * its variables come from that frame.
+     * Figure out which frame to use, and return it to the caller.
      */
 
-    if (level == 0) {
-	framePtr = NULL;
-    } else {
-	for (framePtr = iPtr->varFramePtr; framePtr != NULL;
-		framePtr = framePtr->callerVarPtr) {
-	    if (framePtr->level == level) {
-		break;
-	    }
-	}
-	if (framePtr == NULL) {
-	    goto levelError;
+    for (framePtr = iPtr->varFramePtr; framePtr != NULL;
+	    framePtr = framePtr->callerVarPtr) {
+	if (framePtr->level == level) {
+	    break;
 	}
     }
+    if (framePtr == NULL) {
+	goto levelError;
+    }
     *framePtrPtr = framePtr;
     return result;
+
+  levelError:
+    Tcl_ResetResult(interp);
+    Tcl_AppendResult(interp, "bad level \"", name, "\"", NULL);
+    return -1;
 }
 
 /*
@@ -706,8 +878,8 @@ TclGetFrame(interp, string, framePtrPtr)
  *
  * Tcl_UplevelObjCmd --
  *
- *	This object procedure is invoked to process the "uplevel" Tcl
- *	command. See the user documentation for details on what it does.
+ *	This object function is invoked to process the "uplevel" Tcl command.
+ *	See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result value.
@@ -720,19 +892,18 @@ TclGetFrame(interp, string, framePtrPtr)
 
 	/* ARGSUSED */
 int
-Tcl_UplevelObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_UplevelObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
     register Interp *iPtr = (Interp *) interp;
-    char *optLevel;
     int result;
     CallFrame *savedVarFramePtr, *framePtr;
 
     if (objc < 2) {
-	uplevelSyntax:
+    uplevelSyntax:
 	Tcl_WrongNumArgs(interp, 1, objv, "?level? command ?arg ...?");
 	return TCL_ERROR;
     }
@@ -741,8 +912,7 @@ Tcl_UplevelObjCmd(dummy, interp, objc, objv)
      * Find the level to use for executing the command.
      */
 
-    optLevel = TclGetString(objv[1]);
-    result = TclGetFrame(interp, optLevel, &framePtr);
+    result = TclObjGetFrame(interp, objv[1], &framePtr);
     if (result == -1) {
 	return TCL_ERROR;
     }
@@ -764,30 +934,30 @@ Tcl_UplevelObjCmd(dummy, interp, objc, objv)
      */
 
     if (objc == 1) {
-#ifdef TCL_TIP280
-	/* TIP #280. Make argument location available to eval'd script */
+	/*
+	 * TIP #280. Make argument location available to eval'd script
+	 */
+
 	CmdFrame* invoker = NULL;
 	int word          = 0;
+
 	TclArgumentGet (interp, objv[0], &invoker, &word);
-	result = TclEvalObjEx(interp, objv[0], TCL_EVAL_DIRECT, invoker, word);
-#else
-	result = Tcl_EvalObjEx(interp, objv[0], TCL_EVAL_DIRECT);
-#endif
+	result = TclEvalObjEx(interp, objv[0], 0, invoker, word);
     } else {
 	/*
 	 * More than one argument: concatenate them together with spaces
-	 * between, then evaluate the result.  Tcl_EvalObjEx will delete
-	 * the object when it decrements its refcount after eval'ing it.
+	 * between, then evaluate the result. Tcl_EvalObjEx will delete the
+	 * object when it decrements its refcount after eval'ing it.
 	 */
+
 	Tcl_Obj *objPtr;
 
 	objPtr = Tcl_ConcatObj(objc, objv);
 	result = Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_DIRECT);
     }
     if (result == TCL_ERROR) {
-	char msg[32 + TCL_INTEGER_SPACE];
-	sprintf(msg, "\n    (\"uplevel\" body line %d)", interp->errorLine);
-	Tcl_AddObjErrorInfo(interp, msg, -1);
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (\"uplevel\" body line %d)", interp->errorLine));
     }
 
     /*
@@ -803,18 +973,17 @@ Tcl_UplevelObjCmd(dummy, interp, objc, objv)
  *
  * TclFindProc --
  *
- *	Given the name of a procedure, return a pointer to the
- *	record describing the procedure. The procedure will be
- *	looked up using the usual rules: first in the current
- *	namespace and then in the global namespace.
+ *	Given the name of a procedure, return a pointer to the record
+ *	describing the procedure. The procedure will be looked up using the
+ *	usual rules: first in the current namespace and then in the global
+ *	namespace.
  *
  * Results:
- *	NULL is returned if the name doesn't correspond to any
- *	procedure. Otherwise, the return value is a pointer to
- *	the procedure's record. If the name is found but refers
- *	to an imported command that points to a "real" procedure
- *	defined in another namespace, a pointer to that "real"
- *	procedure's structure is returned.
+ *	NULL is returned if the name doesn't correspond to any procedure.
+ *	Otherwise, the return value is a pointer to the procedure's record. If
+ *	the name is found but refers to an imported command that points to a
+ *	"real" procedure defined in another namespace, a pointer to that
+ *	"real" procedure's structure is returned.
  *
  * Side effects:
  *	None.
@@ -823,18 +992,17 @@ Tcl_UplevelObjCmd(dummy, interp, objc, objv)
  */
 
 Proc *
-TclFindProc(iPtr, procName)
-    Interp *iPtr;		/* Interpreter in which to look. */
-    CONST char *procName;		/* Name of desired procedure. */
+TclFindProc(
+    Interp *iPtr,		/* Interpreter in which to look. */
+    CONST char *procName)	/* Name of desired procedure. */
 {
     Tcl_Command cmd;
     Tcl_Command origCmd;
     Command *cmdPtr;
 
-    cmd = Tcl_FindCommand((Tcl_Interp *) iPtr, procName,
-            (Tcl_Namespace *) NULL, /*flags*/ 0);
+    cmd = Tcl_FindCommand((Tcl_Interp *) iPtr, procName, NULL, /*flags*/ 0);
     if (cmd == (Tcl_Command) NULL) {
-        return NULL;
+	return NULL;
     }
     cmdPtr = (Command *) cmd;
 
@@ -842,10 +1010,10 @@ TclFindProc(iPtr, procName)
     if (origCmd != NULL) {
 	cmdPtr = (Command *) origCmd;
     }
-    if (cmdPtr->proc != TclProcInterpProc) {
+    if (cmdPtr->objProc != TclObjInterpProc) {
 	return NULL;
     }
-    return (Proc *) cmdPtr->clientData;
+    return (Proc *) cmdPtr->objClientData;
 }
 
 /*
@@ -856,9 +1024,9 @@ TclFindProc(iPtr, procName)
  *	Tells whether a command is a Tcl procedure or not.
  *
  * Results:
- *	If the given command is actually a Tcl procedure, the
- *	return value is the address of the record describing
- *	the procedure.  Otherwise the return value is 0.
+ *	If the given command is actually a Tcl procedure, the return value is
+ *	the address of the record describing the procedure. Otherwise the
+ *	return value is 0.
  *
  * Side effects:
  *	None.
@@ -867,8 +1035,8 @@ TclFindProc(iPtr, procName)
  */
 
 Proc *
-TclIsProc(cmdPtr)
-    Command *cmdPtr;		/* Command to test. */
+TclIsProc(
+    Command *cmdPtr)		/* Command to test. */
 {
     Tcl_Command origCmd;
 
@@ -876,8 +1044,8 @@ TclIsProc(cmdPtr)
     if (origCmd != NULL) {
 	cmdPtr = (Command *) origCmd;
     }
-    if (cmdPtr->proc == TclProcInterpProc) {
-	return (Proc *) cmdPtr->clientData;
+    if (cmdPtr->objProc == TclObjInterpProc) {
+	return (Proc *) cmdPtr->objClientData;
     }
     return (Proc *) 0;
 }
@@ -885,310 +1053,659 @@ TclIsProc(cmdPtr)
 /*
  *----------------------------------------------------------------------
  *
- * TclProcInterpProc --
+ * InitArgsAndLocals --
  *
- *	When a Tcl procedure gets invoked with an argc/argv array of
- *	strings, this routine gets invoked to interpret the procedure.
+ *	This routine is invoked in order to initialize the arguments and other
+ *	compiled locals table for a new call frame.
  *
  * Results:
- *	A standard Tcl result value, usually TCL_OK.
+ *	A standard Tcl result.
  *
  * Side effects:
- *	Depends on the commands in the procedure.
+ *	Allocates memory on the stack for the compiled local variables, the
+ *	caller is responsible for freeing them. Initialises all variables. May
+ *	invoke various name resolvers in order to determine which variables
+ *	are being referenced at runtime.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclProcInterpProc(clientData, interp, argc, argv)
-    ClientData clientData;	/* Record describing procedure to be
-				 * interpreted. */
-    Tcl_Interp *interp;		/* Interpreter in which procedure was
-				 * invoked. */
-    int argc;			/* Count of number of arguments to this
-				 * procedure. */
-    register CONST char **argv;	/* Argument values. */
+static int
+ProcWrongNumArgs(
+    Tcl_Interp *interp, int skip)
 {
-    register Tcl_Obj *objPtr;
-    register int i;
-    int result;
+    CallFrame *framePtr = ((Interp *)interp)->varFramePtr;
+    register Proc *procPtr = framePtr->procPtr;
+    register Var *defPtr;
+    int localCt = procPtr->numCompiledLocals, numArgs, i;
+    Tcl_Obj **desiredObjs;
+    const char *final = NULL;
 
     /*
-     * This procedure generates an objv array for object arguments that hold
-     * the argv strings. It starts out with stack-allocated space but uses
-     * dynamically-allocated storage if needed.
+     * Build up desired argument list for Tcl_WrongNumArgs
      */
 
-#define NUM_ARGS 20
-    Tcl_Obj *(objStorage[NUM_ARGS]);
-    register Tcl_Obj **objv = objStorage;
+    numArgs = framePtr->procPtr->numArgs;
+    desiredObjs = (Tcl_Obj **) TclStackAlloc(interp,
+	    (int) sizeof(Tcl_Obj *) * (numArgs+1));
 
-    /*
-     * Create the object argument array "objv". Make sure objv is large
-     * enough to hold the objc arguments plus 1 extra for the zero
-     * end-of-objv word.
-     */
+    if (framePtr->isProcCallFrame & FRAME_IS_LAMBDA) {
+	desiredObjs[0] = Tcl_NewStringObj("lambdaExpr", -1);
+    } else {
+	((Interp *) interp)->ensembleRewrite.numInsertedObjs -= skip - 1;
 
-    if ((argc + 1) > NUM_ARGS) {
-	objv = (Tcl_Obj **)
-	    ckalloc((unsigned)(argc + 1) * sizeof(Tcl_Obj *));
+#ifdef AVOID_HACKS_FOR_ITCL
+	desiredObjs[0] = framePtr->objv[skip-1];
+#else
+	desiredObjs[0] = Tcl_NewListObj(skip, framePtr->objv);
+#endif /* AVOID_HACKS_FOR_ITCL */
     }
-
-    for (i = 0;  i < argc;  i++) {
-	objv[i] = Tcl_NewStringObj(argv[i], -1);
-	Tcl_IncrRefCount(objv[i]);
+    Tcl_IncrRefCount(desiredObjs[0]);
+
+    defPtr = (Var *) (&framePtr->localCachePtr->varName0 + localCt);
+    for (i=1 ; i<=numArgs ; i++, defPtr++) {
+	Tcl_Obj *argObj;
+	Tcl_Obj *namePtr = localName(framePtr, i-1);
+
+	if (defPtr->value.objPtr != NULL) {
+	    TclNewObj(argObj);
+	    Tcl_AppendStringsToObj(argObj, "?", TclGetString(namePtr), "?", NULL);
+	} else if (defPtr->flags & VAR_IS_ARGS) {
+	    numArgs--;
+	    final = "...";
+	    break;
+	} else {
+	    argObj = namePtr;
+	    Tcl_IncrRefCount(namePtr);
+	}
+	desiredObjs[i] = argObj;
     }
-    objv[argc] = 0;
-
-    /*
-     * Use TclObjInterpProc to actually interpret the procedure.
-     */
-
-    result = TclObjInterpProc(clientData, interp, argc, objv);
 
-    /*
-     * Move the interpreter's object result to the string result,
-     * then reset the object result.
-     */
+    Tcl_ResetResult(interp);
+    Tcl_WrongNumArgs(interp, numArgs+1, desiredObjs, final);
 
-    Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	    TCL_VOLATILE);
+    for (i=0 ; i<=numArgs ; i++) {
+	Tcl_DecrRefCount(desiredObjs[i]);
+    }
+    TclStackFree(interp, desiredObjs);
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitCompiledLocals --
+ *
+ *	This routine is invoked in order to initialize the compiled locals
+ *	table for a new call frame.
+ *
+ *	DEPRECATED: functionality has been inlined elsewhere; this function
+ *	remains to insure binary compatibility with Itcl.
+ *
 
-    /*
-     * Decrement the ref counts on the objv elements since we are done
-     * with them.
-     */
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May invoke various name resolvers in order to determine which
+ *	variables are being referenced at runtime.
+ *
+ *----------------------------------------------------------------------
+ */
+void
+TclInitCompiledLocals(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    CallFrame *framePtr,	/* Call frame to initialize. */
+    Namespace *nsPtr)		/* Pointer to current namespace. */
+{
+    Var *varPtr = framePtr->compiledLocals;
+    Tcl_Obj *bodyPtr;
+    ByteCode *codePtr;
 
-    for (i = 0;  i < argc;  i++) {
-	objPtr = objv[i];
-	TclDecrRefCount(objPtr);
+    bodyPtr = framePtr->procPtr->bodyPtr;
+    if (bodyPtr->typePtr != &tclByteCodeType) {
+	Tcl_Panic("body object for proc attached to frame is not a byte code type");
     }
+    codePtr = bodyPtr->internalRep.twoPtrValue.ptr1;
 
-    /*
-     * Free the objv array if malloc'ed storage was used.
-     */
-
-    if (objv != objStorage) {
-	ckfree((char *) objv);
+    if (framePtr->numCompiledLocals) {
+	if (!codePtr->localCachePtr) {
+	    InitLocalCache(framePtr->procPtr) ;
+	}
+	framePtr->localCachePtr = codePtr->localCachePtr;
+	framePtr->localCachePtr->refCount++;
     }
-    return result;
-#undef NUM_ARGS
+
+    InitResolvedLocals(interp, codePtr, varPtr, nsPtr);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclObjInterpProc --
+ * InitResolvedLocals --
  *
- *	When a Tcl procedure gets invoked during bytecode evaluation, this
- *	object-based routine gets invoked to interpret the procedure.
+ *	This routine is invoked in order to initialize the compiled locals
+ *	table for a new call frame.
  *
  * Results:
- *	A standard Tcl object result value.
+ *	None.
  *
  * Side effects:
- *	Depends on the commands in the procedure.
+ *	May invoke various name resolvers in order to determine which
+ *	variables are being referenced at runtime.
  *
  *----------------------------------------------------------------------
  */
 
-int
-TclObjInterpProc(clientData, interp, objc, objv)
-    ClientData clientData; 	 /* Record describing procedure to be
-				  * interpreted. */
-    register Tcl_Interp *interp; /* Interpreter in which procedure was
-				  * invoked. */
-    int objc;			 /* Count of number of arguments to this
-				  * procedure. */
-    Tcl_Obj *CONST objv[];	 /* Argument value objects. */
+static void
+InitResolvedLocals(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    ByteCode *codePtr,
+    Var *varPtr,
+    Namespace *nsPtr)		/* Pointer to current namespace. */
 {
     Interp *iPtr = (Interp *) interp;
-    Proc *procPtr = (Proc *) clientData;
-    Namespace *nsPtr = procPtr->cmdPtr->nsPtr;
-    CallFrame frame;
-    register CallFrame *framePtr = &frame;
-    register Var *varPtr;
-    register CompiledLocal *localPtr;
-    char *procName;
-    int nameLen, localCt, numArgs, argCt, i, result;
+    int haveResolvers = (nsPtr->compiledVarResProc || iPtr->resolverPtr);
+    CompiledLocal *firstLocalPtr, *localPtr;
+    int varNum;
+    Tcl_ResolvedVarInfo *resVarInfo;
 
     /*
-     * This procedure generates an array "compiledLocals" that holds the
-     * storage for local variables. It starts out with stack-allocated space
-     * but uses dynamically-allocated storage if needed.
+     * Find the localPtr corresponding to varPtr
      */
 
-#define NUM_LOCALS 20
-    Var localStorage[NUM_LOCALS];
-    Var *compiledLocals = localStorage;
+    varNum = varPtr - iPtr->framePtr->compiledLocals;
+    localPtr = iPtr->framePtr->procPtr->firstLocalPtr;
+    while (varNum--) {
+	localPtr = localPtr->nextPtr;
+    }
 
-    /*
-     * Get the procedure's name.
-     */
+    if (!(haveResolvers && (codePtr->flags & TCL_BYTECODE_RESOLVE_VARS))) {
+	/*
+	 * Initialize the array of local variables stored in the call frame.
+	 * Some variables may have special resolution rules. In that case, we
+	 * call their "resolver" procs to get our hands on the variable, and
+	 * we make the compiled local a link to the real variable.
+	 */
 
-    procName = Tcl_GetStringFromObj(objv[0], &nameLen);
+    doInitResolvedLocals:
+	for (; localPtr != NULL; varPtr++, localPtr = localPtr->nextPtr) {
+	    varPtr->flags = 0;
+	    varPtr->value.objPtr = NULL;
+
+	    /*
+	     * Now invoke the resolvers to determine the exact variables
+	     * that should be used.
+	     */
+
+	    resVarInfo = localPtr->resolveInfo;
+	    if (resVarInfo && resVarInfo->fetchProc) {
+		Var *resolvedVarPtr = (Var *)
+		    (*resVarInfo->fetchProc)(interp, resVarInfo);
+		if (resolvedVarPtr) {
+		    if (TclIsVarInHash(resolvedVarPtr)) {
+			VarHashRefCount(resolvedVarPtr)++;
+		    }
+		    varPtr->flags = VAR_LINK;
+		    varPtr->value.linkPtr = resolvedVarPtr;
+		}
+	    }
+	}
+	return;
+    }
 
     /*
-     * If necessary, compile the procedure's body. The compiler will
-     * allocate frame slots for the procedure's non-argument local
-     * variables.  Note that compiling the body might increase
-     * procPtr->numCompiledLocals if new local variables are found
-     * while compiling.
+     * This is the first run after a recompile, or else the resolver epoch
+     * has changed: update the resolver cache.
      */
 
-    result = ProcCompileProc(interp, procPtr, procPtr->bodyPtr, nsPtr,
-	    "body of proc", procName, &procPtr);
+    firstLocalPtr = localPtr;
+    for (; localPtr != NULL; localPtr = localPtr->nextPtr) {
+	if (localPtr->resolveInfo) {
+	    if (localPtr->resolveInfo->deleteProc) {
+		localPtr->resolveInfo->deleteProc(localPtr->resolveInfo);
+	    } else {
+		ckfree((char *) localPtr->resolveInfo);
+	    }
+	    localPtr->resolveInfo = NULL;
+	}
+	localPtr->flags &= ~VAR_RESOLVED;
+
+	if (haveResolvers &&
+		!(localPtr->flags & (VAR_ARGUMENT|VAR_TEMPORARY))) {
+	    ResolverScheme *resPtr = iPtr->resolverPtr;
+	    Tcl_ResolvedVarInfo *vinfo;
+	    int result;
+
+	    if (nsPtr->compiledVarResProc) {
+		result = (*nsPtr->compiledVarResProc)(nsPtr->interp,
+			localPtr->name, localPtr->nameLength,
+			(Tcl_Namespace *) nsPtr, &vinfo);
+	    } else {
+		result = TCL_CONTINUE;
+	    }
 
-    if (result != TCL_OK) {
-        return result;
+	    while ((result == TCL_CONTINUE) && resPtr) {
+		if (resPtr->compiledVarResProc) {
+		    result = (*resPtr->compiledVarResProc)(nsPtr->interp,
+			    localPtr->name, localPtr->nameLength,
+			    (Tcl_Namespace *) nsPtr, &vinfo);
+		}
+		resPtr = resPtr->nextPtr;
+	    }
+	    if (result == TCL_OK) {
+		localPtr->resolveInfo = vinfo;
+		localPtr->flags |= VAR_RESOLVED;
+	    }
+	}
     }
+    localPtr = firstLocalPtr;
+    codePtr->flags &= ~TCL_BYTECODE_RESOLVE_VARS;
+    goto doInitResolvedLocals;
+}
 
-    /*
-     * Create the "compiledLocals" array. Make sure it is large enough to
-     * hold all the procedure's compiled local variables, including its
-     * formal parameters.
-     */
+void
+TclFreeLocalCache(
+    Tcl_Interp *interp,
+    LocalCache *localCachePtr)
+{
+    int i;
+    Tcl_Obj **namePtrPtr = &localCachePtr->varName0;
 
-    localCt = procPtr->numCompiledLocals;
-    if (localCt > NUM_LOCALS) {
-	compiledLocals = (Var *) ckalloc((unsigned) localCt * sizeof(Var));
+    for (i = 0; i < localCachePtr->numVars; i++, namePtrPtr++) {
+	Tcl_Obj *objPtr = *namePtrPtr;
+	/*
+	 * Note that this can be called with interp==NULL, on interp
+	 * deletion. In that case, the literal table and objects go away
+	 * on their own.
+	 */
+	if (objPtr) {
+	    if (interp) {
+		TclReleaseLiteral(interp, objPtr);
+	    } else {
+		Tcl_DecrRefCount(objPtr);
+	    }
+	}
     }
+    ckfree((char *) localCachePtr);
+}
+
+static void
+InitLocalCache(Proc *procPtr)
+{
+    Interp *iPtr = procPtr->iPtr;
+    ByteCode *codePtr = procPtr->bodyPtr->internalRep.twoPtrValue.ptr1;
+    int localCt = procPtr->numCompiledLocals;
+    int numArgs = procPtr->numArgs, i = 0;
+
+    Tcl_Obj **namePtr;
+    Var *varPtr;
+    LocalCache *localCachePtr;
+    CompiledLocal *localPtr;
+    int new;
 
     /*
-     * Set up and push a new call frame for the new procedure invocation.
-     * This call frame will execute in the proc's namespace, which might
-     * be different than the current namespace. The proc's namespace is
-     * that of its command, which can change if the command is renamed
-     * from one namespace to another.
+     * Cache the names and initial values of local variables; store the
+     * cache in both the framePtr for this execution and in the codePtr
+     * for future calls.
      */
 
-    result = Tcl_PushCallFrame(interp, (Tcl_CallFrame *) framePtr,
-            (Tcl_Namespace *) nsPtr, /*isProcCallFrame*/ 1);
+    localCachePtr = (LocalCache *) ckalloc(sizeof(LocalCache)
+	    + (localCt-1)*sizeof(Tcl_Obj *)
+	    + numArgs*sizeof(Var));
 
-    if (result != TCL_OK) {
-        return result;
+    namePtr = &localCachePtr->varName0;
+    varPtr = (Var *) (namePtr + localCt);
+    localPtr = procPtr->firstLocalPtr;
+    while (localPtr) {
+	if (TclIsVarTemporary(localPtr)) {
+	    *namePtr = NULL;
+	} else {
+	    *namePtr = TclCreateLiteral(iPtr, localPtr->name,
+		    localPtr->nameLength, /* hash */ (unsigned int) -1,
+		    &new, /* nsPtr */ NULL, 0, NULL);
+	    Tcl_IncrRefCount(*namePtr);
+	}
+
+	if (i < numArgs) {
+	    varPtr->flags = (localPtr->flags & VAR_IS_ARGS);
+	    varPtr->value.objPtr = localPtr->defValuePtr;
+	    varPtr++;
+	    i++;
+	}
+	namePtr++;
+	localPtr=localPtr->nextPtr;
     }
+    codePtr->localCachePtr = localCachePtr;
+    localCachePtr->refCount = 1;
+    localCachePtr->numVars  = localCt;
+}
 
-    framePtr->objc = objc;
-    framePtr->objv = objv;  /* ref counts for args are incremented below */
+static int
+InitArgsAndLocals(
+    register Tcl_Interp *interp,/* Interpreter in which procedure was
+				 * invoked. */
+    Tcl_Obj *procNameObj,	/* Procedure name for error reporting. */
+    int skip)			/* Number of initial arguments to be skipped,
+				 * i.e., words in the "command name". */
+{
+    CallFrame *framePtr = ((Interp *)interp)->varFramePtr;
+    register Proc *procPtr = framePtr->procPtr;
+    ByteCode *codePtr = procPtr->bodyPtr->internalRep.twoPtrValue.ptr1;
+    register Var *varPtr, *defPtr;
+    int localCt = procPtr->numCompiledLocals, numArgs, argCt, i, imax;
+    Tcl_Obj *const *argObjs;
 
     /*
-     * Initialize and resolve compiled variable references.
+     * Make sure that the local cache of variable names and initial values has
+     * been initialised properly .
      */
 
-    framePtr->procPtr = procPtr;
-    framePtr->numCompiledLocals = localCt;
-    framePtr->compiledLocals = compiledLocals;
+    if (localCt) {
+	if (!codePtr->localCachePtr) {
+	    InitLocalCache(procPtr) ;
+	}
+	framePtr->localCachePtr = codePtr->localCachePtr;
+	framePtr->localCachePtr->refCount++;
+	defPtr = (Var *) (&framePtr->localCachePtr->varName0 + localCt);
+    } else {
+	defPtr = NULL;
+    }
+
+    /*
+     * Create the "compiledLocals" array. Make sure it is large enough to hold
+     * all the procedure's compiled local variables, including its formal
+     * parameters.
+     */
 
-    TclInitCompiledLocals(interp, framePtr, nsPtr);
+    varPtr = (Var*) TclStackAlloc(interp, (int)(localCt*sizeof(Var)));
+    framePtr->compiledLocals = varPtr;
+    framePtr->numCompiledLocals = localCt;
 
     /*
-     * Match and assign the call's actual parameters to the procedure's
-     * formal arguments. The formal arguments are described by the first
-     * numArgs entries in both the Proc structure's local variable list and
-     * the call frame's local variable array.
+     * Match and assign the call's actual parameters to the procedure's formal
+     * arguments. The formal arguments are described by the first numArgs
+     * entries in both the Proc structure's local variable list and the call
+     * frame's local variable array.
      */
 
     numArgs = procPtr->numArgs;
-    varPtr = framePtr->compiledLocals;
-    localPtr = procPtr->firstLocalPtr;
-    argCt = objc;
-    for (i = 1, argCt -= 1;  i <= numArgs;  i++, argCt--) {
-	if (!TclIsVarArgument(localPtr)) {
-	    panic("TclObjInterpProc: local variable %s is not argument but should be",
-		  localPtr->name);
-	    return TCL_ERROR;
-	}
-	if (TclIsVarTemporary(localPtr)) {
-	    panic("TclObjInterpProc: local variable %d is temporary but should be an argument", i);
-	    return TCL_ERROR;
+    argCt = framePtr->objc - skip;	/* Set it to the number of args to the
+					 * procedure. */
+    argObjs = framePtr->objv + skip;
+    if (numArgs == 0) {
+	if (argCt) {
+	    goto incorrectArgs;
+	} else {
+	    goto correctArgs;
 	}
+    }
+    imax = ((argCt < numArgs-1) ? argCt : numArgs-1);
+    for (i = 0; i < imax; i++, varPtr++, defPtr++) {
+	/*
+	 * "Normal" arguments; last formal is special, depends on it being
+	 * 'args'.
+	 */
+
+	Tcl_Obj *objPtr = argObjs[i];
 
+	varPtr->flags = 0;
+	varPtr->value.objPtr = objPtr;
+	Tcl_IncrRefCount(objPtr);	/* Local var is a reference. */
+    }
+    for (; i < numArgs-1; i++, varPtr++, defPtr++) {
 	/*
-	 * Handle the special case of the last formal being "args".  When
-	 * it occurs, assign it a list consisting of all the remaining
-	 * actual arguments.
+	 * This loop is entered if argCt < (numArgs-1). Set default values;
+	 * last formal is special.
 	 */
 
-	if ((i == numArgs) && ((localPtr->name[0] == 'a')
-	        && (strcmp(localPtr->name, "args") == 0))) {
-	    Tcl_Obj *listPtr = Tcl_NewListObj(argCt, &(objv[i]));
-	    varPtr->value.objPtr = listPtr;
-	    Tcl_IncrRefCount(listPtr); /* local var is a reference */
-	    TclClearVarUndefined(varPtr);
-	    argCt = 0;
-	    break;		/* done processing args */
-	} else if (argCt > 0) {
-	    Tcl_Obj *objPtr = objv[i];
-	    varPtr->value.objPtr = objPtr;
-	    TclClearVarUndefined(varPtr);
-	    Tcl_IncrRefCount(objPtr);  /* since the local variable now has
-					* another reference to object. */
-	} else if (localPtr->defValuePtr != NULL) {
-	    Tcl_Obj *objPtr = localPtr->defValuePtr;
+	Tcl_Obj *objPtr = defPtr->value.objPtr;
+
+	if (objPtr) {
+	    varPtr->flags = 0;
 	    varPtr->value.objPtr = objPtr;
-	    TclClearVarUndefined(varPtr);
-	    Tcl_IncrRefCount(objPtr);  /* since the local variable now has
-					* another reference to object. */
+	    Tcl_IncrRefCount(objPtr);	/* Local var reference. */
 	} else {
 	    goto incorrectArgs;
 	}
-	varPtr++;
-	localPtr = localPtr->nextPtr;
     }
-    if (argCt > 0) {
-	Tcl_Obj *objResult;
-	int len, flags;
 
-	incorrectArgs:
-	/*
-	 * Build up equivalent to Tcl_WrongNumArgs message for proc
-	 */
+    /*
+     * When we get here, the last formal argument remains to be defined:
+     * defPtr and varPtr point to the last argument to be initialized.
+     */
 
-	Tcl_ResetResult(interp);
-	objResult = Tcl_GetObjResult(interp);
-	Tcl_AppendToObj(objResult, "wrong # args: should be \"", -1);
 
-	/*
-	 * Quote the proc name if it contains spaces (Bug 942757).
-	 */
+    varPtr->flags = 0;
+    if (defPtr->flags & VAR_IS_ARGS) {
+	Tcl_Obj *listPtr = Tcl_NewListObj(argCt-i, argObjs+i);
+
+	varPtr->value.objPtr = listPtr;
+	Tcl_IncrRefCount(listPtr);	/* Local var is a reference. */
+    } else if (argCt == numArgs) {
+	Tcl_Obj *objPtr = argObjs[i];
 
-	len = Tcl_ScanCountedElement(procName, nameLen, &flags);
-	if (len != nameLen) {
-	    char *procName1 = ckalloc((unsigned) len + 1);
-	    len = Tcl_ConvertCountedElement(procName, nameLen, procName1, flags);
-	    Tcl_AppendToObj(objResult, procName1, len);
-	    ckfree(procName1);
+	varPtr->value.objPtr = objPtr;
+	Tcl_IncrRefCount(objPtr);	/* Local var is a reference. */
+    } else if ((argCt < numArgs) && (defPtr->value.objPtr != NULL)) {
+	Tcl_Obj *objPtr = defPtr->value.objPtr;
+
+	varPtr->value.objPtr = objPtr;
+	Tcl_IncrRefCount(objPtr);	/* Local var is a reference. */
+    } else {
+	goto incorrectArgs;
+    }
+    varPtr++;
+
+    /*
+     * Initialise and resolve the remaining compiledLocals. In the absence of
+     * resolvers, they are undefined local vars: (flags=0, value=NULL).
+     */
+
+  correctArgs:
+    if (numArgs < localCt) {
+	if (!framePtr->nsPtr->compiledVarResProc && !((Interp *)interp)->resolverPtr) {
+	    memset(varPtr, 0, (localCt - numArgs)*sizeof(Var));
 	} else {
-	    Tcl_AppendToObj(objResult, procName, len);
+	    InitResolvedLocals(interp, codePtr, varPtr, framePtr->nsPtr);
 	}
+    }
 
-	localPtr = procPtr->firstLocalPtr;
-	for (i = 1;  i <= numArgs;  i++) {
-	    if (localPtr->defValuePtr != NULL) {
-		Tcl_AppendStringsToObj(objResult,
-			" ?", localPtr->name, "?", (char *) NULL);
-	    } else {
-		Tcl_AppendStringsToObj(objResult,
-			" ", localPtr->name, (char *) NULL);
-	    }
-	    localPtr = localPtr->nextPtr;
-	}
-	Tcl_AppendStringsToObj(objResult, "\"", (char *) NULL);
+    return TCL_OK;
 
-	result = TCL_ERROR;
-	goto procDone;
+
+    incorrectArgs:
+    /*
+     * Initialise all compiled locals to avoid problems at DeleteLocalVars.
+     */
+
+    memset(varPtr, 0, ((framePtr->compiledLocals + localCt)-varPtr)*sizeof(Var));
+    return ProcWrongNumArgs(interp, skip);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * PushProcCallFrame --
+ *
+ *	Compiles a proc body if necessary, then pushes a CallFrame suitable
+ *	for executing it.
+ *
+ * Results:
+ *	A standard Tcl object result value.
+ *
+ * Side effects:
+ *	The proc's body may be recompiled. A CallFrame is pushed, it will have
+ *	to be popped by the caller.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+PushProcCallFrame(
+    ClientData clientData, 	/* Record describing procedure to be
+				 * interpreted. */
+    register Tcl_Interp *interp,/* Interpreter in which procedure was
+				 * invoked. */
+    int objc,			/* Count of number of arguments to this
+				 * procedure. */
+    Tcl_Obj *CONST objv[],	/* Argument value objects. */
+    int isLambda)		/* 1 if this is a call by ApplyObjCmd: it
+				 * needs special rules for error msg */
+{
+    Proc *procPtr = (Proc *) clientData;
+    Namespace *nsPtr = procPtr->cmdPtr->nsPtr;
+    CallFrame *framePtr, **framePtrPtr;
+    int result;
+    ByteCode *codePtr;
+
+    /*
+     * If necessary (i.e. if we haven't got a suitable compilation already
+     * cached) compile the procedure's body. The compiler will allocate frame
+     * slots for the procedure's non-argument local variables. Note that
+     * compiling the body might increase procPtr->numCompiledLocals if new
+     * local variables are found while compiling.
+     */
+
+    if (procPtr->bodyPtr->typePtr == &tclByteCodeType) {
+	Interp *iPtr = (Interp *) interp;
+
+	/*
+	 * When we've got bytecode, this is the check for validity. That is,
+	 * the bytecode must be for the right interpreter (no cross-leaks!),
+	 * the code must be from the current epoch (so subcommand compilation
+	 * is up-to-date), the namespace must match (so variable handling
+	 * is right) and the resolverEpoch must match (so that new shadowed
+	 * commands and/or resolver changes are considered).
+	 */
+
+	codePtr = procPtr->bodyPtr->internalRep.twoPtrValue.ptr1;
+ 	if (((Interp *) *codePtr->interpHandle != iPtr)
+		|| (codePtr->compileEpoch != iPtr->compileEpoch)
+		|| (codePtr->nsPtr != nsPtr)
+		|| (codePtr->nsEpoch != nsPtr->resolverEpoch)) {
+	    goto doCompilation;
+	}
+    } else {
+    doCompilation:
+	result = ProcCompileProc(interp, procPtr, procPtr->bodyPtr, nsPtr,
+		(isLambda ? "body of lambda term" : "body of proc"),
+		TclGetString(objv[isLambda]), &procPtr);
+	if (result != TCL_OK) {
+	    return result;
+	}
     }
 
     /*
-     * Invoke the commands in the procedure's body.
+     * Set up and push a new call frame for the new procedure invocation.
+     * This call frame will execute in the proc's namespace, which might be
+     * different than the current namespace. The proc's namespace is that of
+     * its command, which can change if the command is renamed from one
+     * namespace to another.
      */
 
-#ifdef TCL_COMPILE_DEBUG
+    framePtrPtr = &framePtr;
+    result = TclPushStackFrame(interp, (Tcl_CallFrame **) framePtrPtr,
+	    (Tcl_Namespace *) nsPtr,
+	    (isLambda? (FRAME_IS_PROC|FRAME_IS_LAMBDA) : FRAME_IS_PROC));
+    if (result != TCL_OK) {
+	return result;
+    }
+
+    framePtr->objc = objc;
+    framePtr->objv = objv;
+    framePtr->procPtr = procPtr;
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclObjInterpProc --
+ *
+ *	When a Tcl procedure gets invoked during bytecode evaluation, this
+ *	object-based routine gets invoked to interpret the procedure.
+ *
+ * Results:
+ *	A standard Tcl object result value.
+ *
+ * Side effects:
+ *	Depends on the commands in the procedure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclObjInterpProc(
+    ClientData clientData, 	/* Record describing procedure to be
+				 * interpreted. */
+    register Tcl_Interp *interp,/* Interpreter in which procedure was
+				 * invoked. */
+    int objc,			/* Count of number of arguments to this
+				 * procedure. */
+    Tcl_Obj *CONST objv[])	/* Argument value objects. */
+{
+    int result;
+
+    result = PushProcCallFrame(clientData, interp, objc, objv, /*isLambda*/ 0);
+    if (result == TCL_OK) {
+	return TclObjInterpProcCore(interp, objv[0], 1, &MakeProcError);
+    } else {
+	return TCL_ERROR;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclObjInterpProcCore --
+ *
+ *	When a Tcl procedure, lambda term or anything else that works like a
+ *	procedure gets invoked during bytecode evaluation, this object-based
+ *	routine gets invoked to interpret the body.
+ *
+ * Results:
+ *	A standard Tcl object result value.
+ *
+ * Side effects:
+ *	Nearly anything; depends on the commands in the procedure body.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclObjInterpProcCore(
+    register Tcl_Interp *interp,/* Interpreter in which procedure was
+				 * invoked. */
+    Tcl_Obj *procNameObj,	/* Procedure name for error reporting. */
+    int skip,			/* Number of initial arguments to be skipped,
+				 * i.e., words in the "command name". */
+    ProcErrorProc errorProc)	/* How to convert results from the script into
+				 * results of the overall procedure. */
+{
+    Interp *iPtr = (Interp *) interp;
+    register Proc *procPtr = iPtr->varFramePtr->procPtr;
+    int result;
+    CallFrame *freePtr;
+
+    result = InitArgsAndLocals(interp, procNameObj, skip);
+    if (result != TCL_OK) {
+	goto procDone;
+    }
+
+#if defined(TCL_COMPILE_DEBUG)
     if (tclTraceExec >= 1) {
-	fprintf(stdout, "Calling proc ");
-	for (i = 0;  i < objc;  i++) {
-	    TclPrintObject(stdout, objv[i], 15);
+	register CallFrame *framePtr = iPtr->varFramePtr;
+	register int i;
+
+	if (framePtr->isProcCallFrame & FRAME_IS_LAMBDA) {
+	    fprintf(stdout, "Calling lambda ");
+	} else {
+	    fprintf(stdout, "Calling proc ");
+	}
+	for (i = 0; i < framePtr->objc; i++) {
+	    TclPrintObject(stdout, framePtr->objv[i], 15);
 	    fprintf(stdout, " ");
 	}
 	fprintf(stdout, "\n");
@@ -1200,40 +1717,117 @@ TclObjInterpProc(clientData, interp, objc, objv)
     if (TCL_DTRACE_PROC_ARGS_ENABLED()) {
 	char *a[10];
 	int i = 0;
+	int l = iPtr->varFramePtr->isProcCallFrame & FRAME_IS_LAMBDA ? 1 : 0;
 
 	while (i < 10) {
-	    a[i] = i < objc ? TclGetString(objv[i]) : NULL; i++;
+	    a[i] = (l < iPtr->varFramePtr->objc ?
+		    TclGetString(iPtr->varFramePtr->objv[l]) : NULL); i++; l++;
 	}
 	TCL_DTRACE_PROC_ARGS(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
 		a[8], a[9]);
     }
-#endif /* USE_DTRACE */
+    if (TCL_DTRACE_PROC_INFO_ENABLED() && iPtr->cmdFramePtr) {
+	Tcl_Obj *info = TclInfoFrame(interp, iPtr->cmdFramePtr);
+	char *a[4]; int i[2];
 
-    iPtr->returnCode = TCL_OK;
-    procPtr->refCount++;
-    if (TCL_DTRACE_PROC_ENTRY_ENABLED()) {
-	TCL_DTRACE_PROC_ENTRY(TclGetString(objv[0]), objc - 1,
-		(Tcl_Obj **)(objv + 1));
+	TclDTraceInfo(info, a, i);
+	TCL_DTRACE_PROC_INFO(a[0], a[1], a[2], a[3], i[0], i[1]);
+	TclDecrRefCount(info);
     }
-#ifndef TCL_TIP280
-    result = TclCompEvalObj(interp, procPtr->bodyPtr);
-#else
-    /* TIP #280: No need to set the invoking context here. The body has
-     * already been compiled, so the part of CompEvalObj using it is bypassed.
+#endif /* USE_DTRACE */
+
+    /*
+     * Invoke the commands in the procedure's body.
      */
 
-    result = TclCompEvalObj(interp, procPtr->bodyPtr, NULL, 0);
-#endif
-    if (TCL_DTRACE_PROC_RETURN_ENABLED()) {
-	TCL_DTRACE_PROC_RETURN(TclGetString(objv[0]), result);
+    procPtr->refCount++;
+    iPtr->numLevels++;
+
+    if (TclInterpReady(interp) == TCL_ERROR) {
+	result = TCL_ERROR;
+    } else {
+	register ByteCode *codePtr =
+		procPtr->bodyPtr->internalRep.twoPtrValue.ptr1;
+
+	codePtr->refCount++;
+#ifdef USE_DTRACE
+	if (TCL_DTRACE_PROC_ENTRY_ENABLED()) {
+	    int l;
+
+	    l = iPtr->varFramePtr->isProcCallFrame & FRAME_IS_LAMBDA ? 2 : 1;
+	    TCL_DTRACE_PROC_ENTRY(TclGetString(procNameObj),
+		    iPtr->varFramePtr->objc - l,
+		    (Tcl_Obj **)(iPtr->varFramePtr->objv + l));
+	}
+#endif /* USE_DTRACE */
+	result = TclExecuteByteCode(interp, codePtr);
+	if (TCL_DTRACE_PROC_RETURN_ENABLED()) {
+	    TCL_DTRACE_PROC_RETURN(TclGetString(procNameObj), result);
+	}
+	codePtr->refCount--;
+	if (codePtr->refCount <= 0) {
+	    TclCleanupByteCode(codePtr);
+	}
     }
+
+    iPtr->numLevels--;
     procPtr->refCount--;
     if (procPtr->refCount <= 0) {
 	TclProcCleanupProc(procPtr);
     }
 
-    if (result != TCL_OK) {
-	result = ProcessProcResultCode(interp, procName, nameLen, result);
+    /*
+     * Process the result code.
+     */
+
+    switch (result) {
+    case TCL_RETURN:
+	/*
+	 * If it is a 'return', do the TIP#90 processing now.
+	 */
+
+	result = TclUpdateReturnInfo((Interp *) interp);
+	break;
+
+    case TCL_CONTINUE:
+    case TCL_BREAK:
+	/*
+	 * It's an error to get to this point from a 'break' or 'continue', so
+	 * transform to an error now.
+	 */
+
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "invoked \"",
+		((result == TCL_BREAK) ? "break" : "continue"),
+		"\" outside of a loop", NULL);
+	result = TCL_ERROR;
+
+	/*
+	 * Fall through to the TCL_ERROR handling code.
+	 */
+
+    case TCL_ERROR:
+	/*
+	 * Now it _must_ be an error, so we need to log it as such. This means
+	 * filling out the error trace. Luckily, we just hand this off to the
+	 * function handed to us as an argument.
+	 */
+
+	(*errorProc)(interp, procNameObj);
+
+    default:
+	/*
+	 * Process other results (OK and non-standard) by doing nothing
+	 * special, skipping directly to the code afterwards that cleans up
+	 * associated memory.
+	 *
+	 * Non-standard results are processed by passing them through quickly.
+	 * This means they all work as exceptions, unwinding the stack quickly
+	 * and neatly. Who knows how well they are handled by third-party code
+	 * though...
+	 */
+
+	(void) 0;		/* do nothing */
     }
 
 #ifdef USE_DTRACE
@@ -1241,23 +1835,26 @@ TclObjInterpProc(clientData, interp, objc, objv)
 	Tcl_Obj *r;
 
 	r = Tcl_GetObjResult(interp);
-	TCL_DTRACE_PROC_RESULT(TclGetString(objv[0]), result,
+	TCL_DTRACE_PROC_RESULT(TclGetString(procNameObj), result,
 		TclGetString(r), r);
     }
 #endif /* USE_DTRACE */
 
+  procDone:
     /*
-     * Pop and free the call frame for this procedure invocation, then
-     * free the compiledLocals array if malloc'ed storage was used.
+     * Free the stack-allocated compiled locals and CallFrame. It is important
+     * to pop the call frame without freeing it first: the compiledLocals
+     * cannot be freed before the frame is popped, as the local variables must
+     * be deleted. But the compiledLocals must be freed first, as they were
+     * allocated later on the stack.
      */
 
-    procDone:
-    Tcl_PopCallFrame(interp);
-    if (compiledLocals != localStorage) {
-	ckfree((char *) compiledLocals);
-    }
+    freePtr = iPtr->framePtr;
+    Tcl_PopCallFrame(interp);		/* Pop but do not free. */
+    TclStackFree(interp, freePtr->compiledLocals);
+					/* Free compiledLocals. */
+    TclStackFree(interp, freePtr);	/* Free CallFrame. */
     return result;
-#undef NUM_LOCALS
 }
 
 /*
@@ -1265,150 +1862,149 @@ TclObjInterpProc(clientData, interp, objc, objv)
  *
  * TclProcCompileProc --
  *
- *	Called just before a procedure is executed to compile the
- *	body to byte codes.  If the type of the body is not
- *	"byte code" or if the compile conditions have changed
- *	(namespace context, epoch counters, etc.) then the body
- *	is recompiled.  Otherwise, this procedure does nothing.
+ *	Called just before a procedure is executed to compile the body to byte
+ *	codes. If the type of the body is not "byte code" or if the compile
+ *	conditions have changed (namespace context, epoch counters, etc.) then
+ *	the body is recompiled. Otherwise, this function does nothing.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	May change the internal representation of the body object
- *	to compiled code.
+ *	May change the internal representation of the body object to compiled
+ *	code.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclProcCompileProc(interp, procPtr, bodyPtr, nsPtr, description, procName)
-    Tcl_Interp *interp;		/* Interpreter containing procedure. */
-    Proc *procPtr;		/* Data associated with procedure. */
-    Tcl_Obj *bodyPtr;		/* Body of proc. (Usually procPtr->bodyPtr,
- 				 * but could be any code fragment compiled
- 				 * in the context of this procedure.) */
-    Namespace *nsPtr;		/* Namespace containing procedure. */
-    CONST char *description;	/* string describing this body of code. */
-    CONST char *procName;	/* Name of this procedure. */
+TclProcCompileProc(
+    Tcl_Interp *interp,		/* Interpreter containing procedure. */
+    Proc *procPtr,		/* Data associated with procedure. */
+    Tcl_Obj *bodyPtr,		/* Body of proc. (Usually procPtr->bodyPtr,
+ 				 * but could be any code fragment compiled in
+ 				 * the context of this procedure.) */
+    Namespace *nsPtr,		/* Namespace containing procedure. */
+    CONST char *description,	/* string describing this body of code. */
+    CONST char *procName)	/* Name of this procedure. */
 {
-    return ProcCompileProc(interp, procPtr, bodyPtr, nsPtr,
-	    description, procName, NULL);
+    return ProcCompileProc(interp, procPtr, bodyPtr, nsPtr, description,
+	    procName, NULL);
 }
 
 static int
-ProcCompileProc(interp, procPtr, bodyPtr, nsPtr, description,
-		procName, procPtrPtr)
-    Tcl_Interp *interp;		/* Interpreter containing procedure. */
-    Proc *procPtr;		/* Data associated with procedure. */
-    Tcl_Obj *bodyPtr;		/* Body of proc. (Usually procPtr->bodyPtr,
- 				 * but could be any code fragment compiled
- 				 * in the context of this procedure.) */
-    Namespace *nsPtr;		/* Namespace containing procedure. */
-    CONST char *description;	/* string describing this body of code. */
-    CONST char *procName;	/* Name of this procedure. */
-    Proc **procPtrPtr;		/* points to storage where a replacement
-				 * (Proc *) value may be written, when
-				 * appropriate */
+ProcCompileProc(
+    Tcl_Interp *interp,		/* Interpreter containing procedure. */
+    Proc *procPtr,		/* Data associated with procedure. */
+    Tcl_Obj *bodyPtr,		/* Body of proc. (Usually procPtr->bodyPtr,
+ 				 * but could be any code fragment compiled in
+ 				 * the context of this procedure.) */
+    Namespace *nsPtr,		/* Namespace containing procedure. */
+    CONST char *description,	/* string describing this body of code. */
+    CONST char *procName,	/* Name of this procedure. */
+    Proc **procPtrPtr)		/* Points to storage where a replacement
+				 * (Proc *) value may be written. */
 {
-    Interp *iPtr = (Interp*)interp;
-    int i, result;
-    Tcl_CallFrame frame;
-    ByteCode *codePtr = (ByteCode *) bodyPtr->internalRep.otherValuePtr;
+    Interp *iPtr = (Interp *) interp;
+    int i;
+    Tcl_CallFrame *framePtr;
+    ByteCode *codePtr = bodyPtr->internalRep.twoPtrValue.ptr1;
     CompiledLocal *localPtr;
 
     /*
-     * If necessary, compile the procedure's body. The compiler will
-     * allocate frame slots for the procedure's non-argument local
-     * variables. If the ByteCode already exists, make sure it hasn't been
-     * invalidated by someone redefining a core command (this might make the
-     * compiled code wrong). Also, if the code was compiled in/for a
-     * different interpreter, we recompile it. Note that compiling the body
-     * might increase procPtr->numCompiledLocals if new local variables are
-     * found while compiling.
+     * If necessary, compile the procedure's body. The compiler will allocate
+     * frame slots for the procedure's non-argument local variables. If the
+     * ByteCode already exists, make sure it hasn't been invalidated by
+     * someone redefining a core command (this might make the compiled code
+     * wrong). Also, if the code was compiled in/for a different interpreter,
+     * we recompile it. Note that compiling the body might increase
+     * procPtr->numCompiledLocals if new local variables are found while
+     * compiling.
      *
-     * Precompiled procedure bodies, however, are immutable and therefore
-     * they are not recompiled, even if things have changed.
+     * Precompiled procedure bodies, however, are immutable and therefore they
+     * are not recompiled, even if things have changed.
      */
 
     if (bodyPtr->typePtr == &tclByteCodeType) {
- 	if (((Interp *) *codePtr->interpHandle != iPtr)
- 	        || (codePtr->compileEpoch != iPtr->compileEpoch)
- 	        || (codePtr->nsPtr != nsPtr)) {
-            if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
-                if ((Interp *) *codePtr->interpHandle != iPtr) {
-                    Tcl_AppendResult(interp,
-                            "a precompiled script jumped interps", NULL);
-                    return TCL_ERROR;
-                }
-	        codePtr->compileEpoch = iPtr->compileEpoch;
-                codePtr->nsPtr = nsPtr;
-            } else {
-                (*tclByteCodeType.freeIntRepProc)(bodyPtr);
-                bodyPtr->typePtr = (Tcl_ObjType *) NULL;
-            }
+ 	if (((Interp *) *codePtr->interpHandle == iPtr)
+		&& (codePtr->compileEpoch == iPtr->compileEpoch)
+		&& (codePtr->nsPtr == nsPtr)
+		&& (codePtr->nsEpoch == nsPtr->resolverEpoch)) {
+	    return TCL_OK;
+	} else {
+	    if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) {
+		if ((Interp *) *codePtr->interpHandle != iPtr) {
+		    Tcl_AppendResult(interp,
+			    "a precompiled script jumped interps", NULL);
+		    return TCL_ERROR;
+		}
+		codePtr->compileEpoch = iPtr->compileEpoch;
+		codePtr->nsPtr = nsPtr;
+	    } else {
+		bodyPtr->typePtr->freeIntRepProc(bodyPtr);
+		bodyPtr->typePtr = NULL;
+	    }
  	}
     }
     if (bodyPtr->typePtr != &tclByteCodeType) {
- 	int numChars;
- 	char *ellipsis;
+	Tcl_HashEntry *hePtr;
 
 #ifdef TCL_COMPILE_DEBUG
  	if (tclTraceCompile >= 1) {
  	    /*
- 	     * Display a line summarizing the top level command we
- 	     * are about to compile.
+ 	     * Display a line summarizing the top level command we are about
+ 	     * to compile.
  	     */
 
- 	    numChars = strlen(procName);
- 	    ellipsis = "";
- 	    if (numChars > 50) {
- 		numChars = 50;
- 		ellipsis = "...";
- 	    }
- 	    fprintf(stdout, "Compiling %s \"%.*s%s\"\n",
- 		    description, numChars, procName, ellipsis);
+	    Tcl_Obj *message;
+
+	    TclNewLiteralStringObj(message, "Compiling ");
+	    Tcl_IncrRefCount(message);
+	    Tcl_AppendStringsToObj(message, description, " \"", NULL);
+	    Tcl_AppendLimitedToObj(message, procName, -1, 50, NULL);
+ 	    fprintf(stdout, "%s\"\n", TclGetString(message));
+	    Tcl_DecrRefCount(message);
  	}
 #endif
 
  	/*
- 	 * Plug the current procPtr into the interpreter and coerce
- 	 * the code body to byte codes.  The interpreter needs to
- 	 * know which proc it's compiling so that it can access its
- 	 * list of compiled locals.
+ 	 * Plug the current procPtr into the interpreter and coerce the code
+ 	 * body to byte codes. The interpreter needs to know which proc it's
+ 	 * compiling so that it can access its list of compiled locals.
  	 *
- 	 * TRICKY NOTE:  Be careful to push a call frame with the
- 	 *   proper namespace context, so that the byte codes are
- 	 *   compiled in the appropriate class context.
+ 	 * TRICKY NOTE: Be careful to push a call frame with the proper
+ 	 *   namespace context, so that the byte codes are compiled in the
+ 	 *   appropriate class context.
  	 */
 
 	if (procPtrPtr != NULL && procPtr->refCount > 1) {
 	    Tcl_Command token;
 	    Tcl_CmdInfo info;
-	    Proc *new = (Proc *) ckalloc(sizeof(Proc));
-
-	    new->iPtr = procPtr->iPtr;
-	    new->refCount = 1;
-	    new->cmdPtr = procPtr->cmdPtr;
-	    token = (Tcl_Command) new->cmdPtr;
-	    new->bodyPtr = Tcl_DuplicateObj(bodyPtr);
-	    bodyPtr = new->bodyPtr;
+	    Proc *newProc = (Proc *) ckalloc(sizeof(Proc));
+
+	    newProc->iPtr = procPtr->iPtr;
+	    newProc->refCount = 1;
+	    newProc->cmdPtr = procPtr->cmdPtr;
+	    token = (Tcl_Command) newProc->cmdPtr;
+	    newProc->bodyPtr = Tcl_DuplicateObj(bodyPtr);
+	    bodyPtr = newProc->bodyPtr;
 	    Tcl_IncrRefCount(bodyPtr);
-	    new->numArgs = procPtr->numArgs;
+	    newProc->numArgs = procPtr->numArgs;
 
-	    new->numCompiledLocals = new->numArgs;
-	    new->firstLocalPtr = NULL;
-	    new->lastLocalPtr = NULL;
+	    newProc->numCompiledLocals = newProc->numArgs;
+	    newProc->firstLocalPtr = NULL;
+	    newProc->lastLocalPtr = NULL;
 	    localPtr = procPtr->firstLocalPtr;
-	    for (i = 0; i < new->numArgs; i++, localPtr = localPtr->nextPtr) {
+	    for (i=0; i<newProc->numArgs; i++, localPtr=localPtr->nextPtr) {
 		CompiledLocal *copy = (CompiledLocal *) ckalloc((unsigned)
-			(sizeof(CompiledLocal) -sizeof(localPtr->name)
-			 + localPtr->nameLength + 1));
-		if (new->firstLocalPtr == NULL) {
-		    new->firstLocalPtr = new->lastLocalPtr = copy;
+			(sizeof(CompiledLocal) - sizeof(localPtr->name)
+			+ localPtr->nameLength + 1));
+
+		if (newProc->firstLocalPtr == NULL) {
+		    newProc->firstLocalPtr = newProc->lastLocalPtr = copy;
 		} else {
-		    new->lastLocalPtr->nextPtr = copy;
-		    new->lastLocalPtr = copy;
+		    newProc->lastLocalPtr->nextPtr = copy;
+		    newProc->lastLocalPtr = copy;
 		}
 		copy->nextPtr = NULL;
 		copy->nameLength = localPtr->nameLength;
@@ -1419,97 +2015,58 @@ ProcCompileProc(interp, procPtr, bodyPtr, nsPtr, description,
 		    Tcl_IncrRefCount(copy->defValuePtr);
 		}
 		copy->resolveInfo = localPtr->resolveInfo;
-		memcpy(copy->name, localPtr->name,  localPtr->nameLength + 1);
+		memcpy(copy->name, localPtr->name, localPtr->nameLength + 1);
 	    }
 
+	    /*
+	     * Reset the ClientData
+	     */
 
-	    /* Reset the ClientData */
 	    Tcl_GetCommandInfoFromToken(token, &info);
 	    if (info.objClientData == (ClientData) procPtr) {
-	        info.objClientData = (ClientData) new;
+		info.objClientData = (ClientData) newProc;
 	    }
 	    if (info.clientData == (ClientData) procPtr) {
-	        info.clientData = (ClientData) new;
+		info.clientData = (ClientData) newProc;
 	    }
 	    if (info.deleteData == (ClientData) procPtr) {
-	        info.deleteData = (ClientData) new;
+		info.deleteData = (ClientData) newProc;
 	    }
 	    Tcl_SetCommandInfoFromToken(token, &info);
 
 	    procPtr->refCount--;
-	    *procPtrPtr = procPtr = new;
+	    *procPtrPtr = procPtr = newProc;
 	}
  	iPtr->compiledProcPtr = procPtr;
 
- 	result = Tcl_PushCallFrame(interp, &frame,
-		(Tcl_Namespace*)nsPtr, /* isProcCallFrame */ 0);
+ 	(void) TclPushStackFrame(interp, &framePtr,
+		(Tcl_Namespace *) nsPtr, /* isProcCallFrame */ 0);
 
- 	if (result == TCL_OK) {
-#ifdef TCL_TIP280
-	    /* TIP #280. We get the invoking context from the cmdFrame
-	     * which was saved by 'Tcl_ProcObjCmd' (using linePBodyPtr).
-	     */
+	/*
+	 * TIP #280: We get the invoking context from the cmdFrame which
+	 * was saved by 'Tcl_ProcObjCmd' (using linePBodyPtr).
+	 */
 
-	    Tcl_HashEntry* hePtr = Tcl_FindHashEntry (iPtr->linePBodyPtr, (char *) procPtr);
+	hePtr = Tcl_FindHashEntry(iPtr->linePBodyPtr, (char *) procPtr);
 
-	    /* Constructed saved frame has body as word 0. See Tcl_ProcObjCmd.
-	     */
-	    iPtr->invokeWord        = 0;
-	    iPtr->invokeCmdFramePtr = (hePtr
-				       ? (CmdFrame*) Tcl_GetHashValue (hePtr)
-				       : NULL);
-#endif
-	    result = tclByteCodeType.setFromAnyProc(interp, bodyPtr);
-#ifdef TCL_TIP280
-	    iPtr->invokeCmdFramePtr = NULL;
-#endif
-	    Tcl_PopCallFrame(interp);
-	}
+	/*
+	 * Constructed saved frame has body as word 0. See Tcl_ProcObjCmd.
+	 */
 
- 	if (result != TCL_OK) {
- 	    if (result == TCL_ERROR) {
-		char buf[100 + TCL_INTEGER_SPACE];
-
-		numChars = strlen(procName);
- 		ellipsis = "";
- 		if (numChars > 50) {
- 		    numChars = 50;
- 		    ellipsis = "...";
- 		}
-		while ( (procName[numChars] & 0xC0) == 0x80 ) {
-	            /*
-		     * Back up truncation point so that we don't truncate
-		     * in the middle of a multi-byte character (in UTF-8)
-		     */
-		    numChars--;
-		    ellipsis = "...";
-		}
- 		sprintf(buf, "\n    (compiling %s \"%.*s%s\", line %d)",
- 			description, numChars, procName, ellipsis,
- 			interp->errorLine);
- 		Tcl_AddObjErrorInfo(interp, buf, -1);
- 	    }
- 	    return result;
- 	}
+	iPtr->invokeWord = 0;
+	iPtr->invokeCmdFramePtr =
+		(hePtr ? (CmdFrame *) Tcl_GetHashValue(hePtr) : NULL);
+	(void) tclByteCodeType.setFromAnyProc(interp, bodyPtr);
+	iPtr->invokeCmdFramePtr = NULL;
+	TclPopStackFrame(interp);
     } else if (codePtr->nsEpoch != nsPtr->resolverEpoch) {
-
 	/*
-	 * The resolver epoch has changed, but we only need to invalidate
-	 * the resolver cache.
+	 * The resolver epoch has changed, but we only need to invalidate the
+	 * resolver cache.
 	 */
 
-	for (localPtr = procPtr->firstLocalPtr;  localPtr != NULL;
-	    localPtr = localPtr->nextPtr) {
-	    localPtr->flags &= ~(VAR_RESOLVED);
-	    if (localPtr->resolveInfo) {
-		if (localPtr->resolveInfo->deleteProc) {
-		    localPtr->resolveInfo->deleteProc(localPtr->resolveInfo);
-		} else {
-		    ckfree((char*)localPtr->resolveInfo);
-		}
-		localPtr->resolveInfo = NULL;
-	    }
-	}
+	codePtr->nsEpoch = nsPtr->resolverEpoch;
+	codePtr->flags |= TCL_BYTECODE_RESOLVE_VARS;
     }
     return TCL_OK;
 }
@@ -1517,68 +2074,36 @@ ProcCompileProc(interp, procPtr, bodyPtr, nsPtr, description,
 /*
  *----------------------------------------------------------------------
  *
- * ProcessProcResultCode --
+ * MakeProcError --
  *
- *	Procedure called by TclObjInterpProc to process a return code other
- *	than TCL_OK returned by a Tcl procedure.
+ *	Function called by TclObjInterpProc to create the stack information
+ *	upon an error from a procedure.
  *
  * Results:
- *	Depending on the argument return code, the result returned is
- *	another return code and the interpreter's result is set to a value
- *	to supplement that return code.
+ *	The interpreter's error info trace is set to a value that supplements
+ *	the error code.
  *
  * Side effects:
- *	If the result returned is TCL_ERROR, traceback information about
- *	the procedure just executed is appended to the interpreter's
- *	"errorInfo" variable.
+ *	none.
  *
  *----------------------------------------------------------------------
  */
 
-static int
-ProcessProcResultCode(interp, procName, nameLen, returnCode)
-    Tcl_Interp *interp;		/* The interpreter in which the procedure
-				 * was called and returned returnCode. */
-    char *procName;		/* Name of the procedure. Used for error
+static void
+MakeProcError(
+    Tcl_Interp *interp,		/* The interpreter in which the procedure was
+				 * called. */
+    Tcl_Obj *procNameObj)	/* Name of the procedure. Used for error
 				 * messages and trace information. */
-    int nameLen;		/* Number of bytes in procedure's name. */
-    int returnCode;		/* The unexpected result code. */
 {
-    Interp *iPtr = (Interp *) interp;
-    char msg[100 + TCL_INTEGER_SPACE];
-    char *ellipsis = "";
-
-    if (returnCode == TCL_OK) {
-	return TCL_OK;
-    }
-    if ((returnCode > TCL_CONTINUE) || (returnCode < TCL_OK)) {
-	return returnCode;
-    }
-    if (returnCode == TCL_RETURN) {
-	return TclUpdateReturnInfo(iPtr);
-    }
-    if (returnCode != TCL_ERROR) {
-	Tcl_ResetResult(interp);
-	Tcl_AppendToObj(Tcl_GetObjResult(interp), ((returnCode == TCL_BREAK)
-		? "invoked \"break\" outside of a loop"
-		: "invoked \"continue\" outside of a loop"), -1);
-    }
-    if (nameLen > 60) {
-	nameLen = 60;
-	ellipsis = "...";
-    }
-    while ( (procName[nameLen] & 0xC0) == 0x80 ) {
-        /*
-	 * Back up truncation point so that we don't truncate in the
-	 * middle of a multi-byte character (in UTF-8)
-	 */
-	nameLen--;
-	ellipsis = "...";
-    }
-    sprintf(msg, "\n    (procedure \"%.*s%s\" line %d)", nameLen, procName,
-	    ellipsis, iPtr->errorLine);
-    Tcl_AddObjErrorInfo(interp, msg, -1);
-    return TCL_ERROR;
+    int overflow, limit = 60, nameLen;
+    const char *procName = Tcl_GetStringFromObj(procNameObj, &nameLen);
+
+    overflow = (nameLen > limit);
+    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+	    "\n    (procedure \"%.*s%s\" line %d)",
+	    (overflow ? limit : nameLen), procName,
+	    (overflow ? "..." : ""), interp->errorLine));
 }
 
 /*
@@ -1586,24 +2111,24 @@ ProcessProcResultCode(interp, procName, nameLen, returnCode)
  *
  * TclProcDeleteProc --
  *
- *	This procedure is invoked just before a command procedure is
- *	removed from an interpreter.  Its job is to release all the
- *	resources allocated to the procedure.
+ *	This function is invoked just before a command procedure is removed
+ *	from an interpreter. Its job is to release all the resources allocated
+ *	to the procedure.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Memory gets freed, unless the procedure is actively being
- *	executed.  In this case the cleanup is delayed until the
- *	last call to the current procedure completes.
+ *	Memory gets freed, unless the procedure is actively being executed.
+ *	In this case the cleanup is delayed until the last call to the current
+ *	procedure completes.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclProcDeleteProc(clientData)
-    ClientData clientData;		/* Procedure to be deleted. */
+TclProcDeleteProc(
+    ClientData clientData)	/* Procedure to be deleted. */
 {
     Proc *procPtr = (Proc *) clientData;
 
@@ -1618,9 +2143,8 @@ TclProcDeleteProc(clientData)
  *
  * TclProcCleanupProc --
  *
- *	This procedure does all the real work of freeing up a Proc
- *	structure.  It's called only when the structure's reference
- *	count becomes zero.
+ *	This function does all the real work of freeing up a Proc structure.
+ *	It's called only when the structure's reference count becomes zero.
  *
  * Results:
  *	None.
@@ -1632,33 +2156,31 @@ TclProcDeleteProc(clientData)
  */
 
 void
-TclProcCleanupProc(procPtr)
-    register Proc *procPtr;		/* Procedure to be deleted. */
+TclProcCleanupProc(
+    register Proc *procPtr)	/* Procedure to be deleted. */
 {
     register CompiledLocal *localPtr;
     Tcl_Obj *bodyPtr = procPtr->bodyPtr;
     Tcl_Obj *defPtr;
     Tcl_ResolvedVarInfo *resVarInfo;
-#ifdef TCL_TIP280
-    Tcl_HashEntry* hePtr = NULL;
-    CmdFrame*      cfPtr = NULL;
-    Interp*        iPtr  = procPtr->iPtr;
-#endif
+    Tcl_HashEntry *hePtr = NULL;
+    CmdFrame *cfPtr = NULL;
+    Interp *iPtr = procPtr->iPtr;
 
     if (bodyPtr != NULL) {
 	Tcl_DecrRefCount(bodyPtr);
     }
-    for (localPtr = procPtr->firstLocalPtr;  localPtr != NULL;  ) {
+    for (localPtr = procPtr->firstLocalPtr; localPtr != NULL; ) {
 	CompiledLocal *nextPtr = localPtr->nextPtr;
 
-        resVarInfo = localPtr->resolveInfo;
+	resVarInfo = localPtr->resolveInfo;
 	if (resVarInfo) {
 	    if (resVarInfo->deleteProc) {
 		(*resVarInfo->deleteProc)(resVarInfo);
 	    } else {
 		ckfree((char *) resVarInfo);
 	    }
-        }
+	}
 
 	if (localPtr->defValuePtr != NULL) {
 	    defPtr = localPtr->defValuePtr;
@@ -1669,27 +2191,34 @@ TclProcCleanupProc(procPtr)
     }
     ckfree((char *) procPtr);
 
-#ifdef TCL_TIP280
-    /* TIP #280. Release the location data associated with this Proc
+    /*
+     * TIP #280: Release the location data associated with this Proc
      * structure, if any. The interpreter may not exist (For example for
-     * procbody structurues created by tbcload.
+     * procbody structures created by tbcload. See also Tcl_ProcObjCmd(), when
+     * the same ProcPtr is overwritten with a new CmdFrame.
      */
 
-    if (!iPtr) return;
+    if (iPtr == NULL) {
+	return;
+    }
 
-    hePtr = Tcl_FindHashEntry (iPtr->linePBodyPtr, (char *) procPtr);
-    if (!hePtr) return;
+    hePtr = Tcl_FindHashEntry(iPtr->linePBodyPtr, (char *) procPtr);
+    if (!hePtr) {
+	return;
+    }
 
-    cfPtr = (CmdFrame*) Tcl_GetHashValue (hePtr);
+    cfPtr = (CmdFrame *) Tcl_GetHashValue(hePtr);
 
-    if (cfPtr->type == TCL_LOCATION_SOURCE) {
-        Tcl_DecrRefCount (cfPtr->data.eval.path);
-	cfPtr->data.eval.path = NULL;
+    if (cfPtr) {
+	if (cfPtr->type == TCL_LOCATION_SOURCE) {
+	    Tcl_DecrRefCount(cfPtr->data.eval.path);
+	    cfPtr->data.eval.path = NULL;
+	}
+	ckfree((char *) cfPtr->line);
+	cfPtr->line = NULL;
+	ckfree((char *) cfPtr);
     }
-    ckfree ((char*) cfPtr->line); cfPtr->line = NULL;
-    ckfree ((char*) cfPtr);
-    Tcl_DeleteHashEntry (hePtr);
-#endif
+    Tcl_DeleteHashEntry(hePtr);
 }
 
 /*
@@ -1697,47 +2226,44 @@ TclProcCleanupProc(procPtr)
  *
  * TclUpdateReturnInfo --
  *
- *	This procedure is called when procedures return, and at other
- *	points where the TCL_RETURN code is used.  It examines fields
- *	such as iPtr->returnCode and iPtr->errorCode and modifies
- *	the real return status accordingly.
+ *	This function is called when procedures return, and at other points
+ *	where the TCL_RETURN code is used. It examines the returnLevel and
+ *	returnCode to determine the real return status.
  *
  * Results:
- *	The return value is the true completion code to use for
- *	the procedure, instead of TCL_RETURN.
+ *	The return value is the true completion code to use for the procedure
+ *	or script, instead of TCL_RETURN.
  *
  * Side effects:
- *	The errorInfo and errorCode variables may get modified.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclUpdateReturnInfo(iPtr)
-    Interp *iPtr;		/* Interpreter for which TCL_RETURN
-				 * exception is being processed. */
+TclUpdateReturnInfo(
+    Interp *iPtr)		/* Interpreter for which TCL_RETURN exception
+				 * is being processed. */
 {
-    int code;
-    char *errorCode;
-    Tcl_Obj *objPtr;
+    int code = TCL_RETURN;
+
+    iPtr->returnLevel--;
+    if (iPtr->returnLevel < 0) {
+	Tcl_Panic("TclUpdateReturnInfo: negative return level");
+    }
+    if (iPtr->returnLevel == 0) {
+	/*
+	 * Now we've reached the level to return the requested -code.
+	 * Since iPtr->returnLevel and iPtr->returnCode have completed
+	 * their task, we now reset them to default values so that any
+	 * bare "return TCL_RETURN" that may follow will work [Bug 2152286].
+	 */
 
-    code = iPtr->returnCode;
-    iPtr->returnCode = TCL_OK;
-    if (code == TCL_ERROR) {
-	errorCode = ((iPtr->errorCode != NULL) ? iPtr->errorCode : "NONE");
-	objPtr = Tcl_NewStringObj(errorCode, -1);
-	Tcl_IncrRefCount(objPtr);
-	Tcl_ObjSetVar2((Tcl_Interp *) iPtr, iPtr->execEnvPtr->errorCode,
-	        NULL, objPtr, TCL_GLOBAL_ONLY);
-	Tcl_DecrRefCount(objPtr);
-	iPtr->flags |= ERROR_CODE_SET;
-	if (iPtr->errorInfo != NULL) {
-	    objPtr = Tcl_NewStringObj(iPtr->errorInfo, -1);
-	    Tcl_IncrRefCount(objPtr);
-	    Tcl_ObjSetVar2((Tcl_Interp *) iPtr, iPtr->execEnvPtr->errorInfo,
-		    NULL, objPtr, TCL_GLOBAL_ONLY);
-	    Tcl_DecrRefCount(objPtr);
-	    iPtr->flags |= ERR_IN_PROGRESS;
+	code = iPtr->returnCode;
+	iPtr->returnLevel = 1;
+	iPtr->returnCode = TCL_OK;
+	if (code == TCL_ERROR) {
+	    iPtr->flags |= ERR_LEGACY_COPY;
 	}
     }
     return code;
@@ -1746,49 +2272,24 @@ TclUpdateReturnInfo(iPtr)
 /*
  *----------------------------------------------------------------------
  *
- * TclGetInterpProc --
- *
- *  Returns a pointer to the TclProcInterpProc procedure; this is different
- *  from the value obtained from the TclProcInterpProc reference on systems
- *  like Windows where import and export versions of a procedure exported
- *  by a DLL exist.
- *
- * Results:
- *  Returns the internal address of the TclProcInterpProc procedure.
- *
- * Side effects:
- *  None.
- *
- *----------------------------------------------------------------------
- */
-
-TclCmdProcType
-TclGetInterpProc()
-{
-    return (TclCmdProcType) TclProcInterpProc;
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * TclGetObjInterpProc --
  *
- *  Returns a pointer to the TclObjInterpProc procedure; this is different
- *  from the value obtained from the TclObjInterpProc reference on systems
- *  like Windows where import and export versions of a procedure exported
- *  by a DLL exist.
+ *	Returns a pointer to the TclObjInterpProc function; this is different
+ *	from the value obtained from the TclObjInterpProc reference on systems
+ *	like Windows where import and export versions of a function exported
+ *	by a DLL exist.
  *
  * Results:
- *  Returns the internal address of the TclObjInterpProc procedure.
+ *	Returns the internal address of the TclObjInterpProc function.
  *
  * Side effects:
- *  None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 TclObjCmdProcType
-TclGetObjInterpProc()
+TclGetObjInterpProc(void)
 {
     return (TclObjCmdProcType) TclObjInterpProc;
 }
@@ -1798,38 +2299,37 @@ TclGetObjInterpProc()
  *
  * TclNewProcBodyObj --
  *
- *  Creates a new object, of type "procbody", whose internal
- *  representation is the given Proc struct.
- *  The newly created object's reference count is 0.
+ *	Creates a new object, of type "procbody", whose internal
+ *	representation is the given Proc struct. The newly created object's
+ *	reference count is 0.
  *
  * Results:
- *  Returns a pointer to a newly allocated Tcl_Obj, 0 on error.
+ *	Returns a pointer to a newly allocated Tcl_Obj, NULL on error.
  *
  * Side effects:
- *  The reference count in the ByteCode attached to the Proc is bumped up
- *  by one, since the internal rep stores a pointer to it.
+ *	The reference count in the ByteCode attached to the Proc is bumped up
+ *	by one, since the internal rep stores a pointer to it.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-TclNewProcBodyObj(procPtr)
-    Proc *procPtr;	/* the Proc struct to store as the internal
-                         * representation. */
+TclNewProcBodyObj(
+    Proc *procPtr)		/* the Proc struct to store as the internal
+				 * representation. */
 {
     Tcl_Obj *objPtr;
 
     if (!procPtr) {
-        return (Tcl_Obj *) NULL;
+	return NULL;
     }
 
-    objPtr = Tcl_NewStringObj("", 0);
-
+    TclNewObj(objPtr);
     if (objPtr) {
-        objPtr->typePtr = &tclProcBodyType;
-        objPtr->internalRep.otherValuePtr = (VOID *) procPtr;
+	objPtr->typePtr = &tclProcBodyType;
+	objPtr->internalRep.twoPtrValue.ptr1 = procPtr;
 
-        procPtr->refCount++;
+	procPtr->refCount++;
     }
 
     return objPtr;
@@ -1840,27 +2340,27 @@ TclNewProcBodyObj(procPtr)
  *
  * ProcBodyDup --
  *
- *  Tcl_ObjType's Dup function for the proc body object.
- *  Bumps the reference count on the Proc stored in the internal
- *  representation.
+ *	Tcl_ObjType's Dup function for the proc body object. Bumps the
+ *	reference count on the Proc stored in the internal representation.
  *
  * Results:
- *  None.
+ *	None.
  *
  * Side effects:
- *  Sets up the object in dupPtr to be a duplicate of the one in srcPtr.
+ *	Sets up the object in dupPtr to be a duplicate of the one in srcPtr.
  *
  *----------------------------------------------------------------------
  */
 
-static void ProcBodyDup(srcPtr, dupPtr)
-    Tcl_Obj *srcPtr;		/* object to copy */
-    Tcl_Obj *dupPtr;		/* target object for the duplication */
+static void
+ProcBodyDup(
+    Tcl_Obj *srcPtr,		/* Object to copy. */
+    Tcl_Obj *dupPtr)		/* Target object for the duplication. */
 {
-    Proc *procPtr = (Proc *) srcPtr->internalRep.otherValuePtr;
+    Proc *procPtr = srcPtr->internalRep.twoPtrValue.ptr1;
 
     dupPtr->typePtr = &tclProcBodyType;
-    dupPtr->internalRep.otherValuePtr = (VOID *) procPtr;
+    dupPtr->internalRep.twoPtrValue.ptr1 = procPtr;
     procPtr->refCount++;
 }
 
@@ -1869,130 +2369,539 @@ static void ProcBodyDup(srcPtr, dupPtr)
  *
  * ProcBodyFree --
  *
- *  Tcl_ObjType's Free function for the proc body object.
- *  The reference count on its Proc struct is decreased by 1; if the count
- *  reaches 0, the proc is freed.
+ *	Tcl_ObjType's Free function for the proc body object. The reference
+ *	count on its Proc struct is decreased by 1; if the count reaches 0,
+ *	the proc is freed.
  *
  * Results:
- *  None.
+ *	None.
  *
  * Side effects:
- *  If the reference count on the Proc struct reaches 0, the struct is freed.
+ *	If the reference count on the Proc struct reaches 0, the struct is
+ *	freed.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-ProcBodyFree(objPtr)
-    Tcl_Obj *objPtr;		/* the object to clean up */
+ProcBodyFree(
+    Tcl_Obj *objPtr)		/* The object to clean up. */
 {
-    Proc *procPtr = (Proc *) objPtr->internalRep.otherValuePtr;
-    procPtr->refCount--;
-    if (procPtr->refCount <= 0) {
-        TclProcCleanupProc(procPtr);
+    Proc *procPtr = objPtr->internalRep.twoPtrValue.ptr1;
+
+    if (procPtr->refCount-- < 2) {
+	TclProcCleanupProc(procPtr);
     }
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * ProcBodySetFromAny --
- *
- *  Tcl_ObjType's SetFromAny function for the proc body object.
- *  Calls panic.
- *
- * Results:
- *  Theoretically returns a TCL result code.
+ * DupLambdaInternalRep, FreeLambdaInternalRep, SetLambdaFromAny --
  *
- * Side effects:
- *  Calls panic, since we can't set the value of the object from a string
- *  representation (or any other internal ones).
+ *	How to manage the internal representations of lambda term objects.
+ *	Syntactically they look like a two- or three-element list, where the
+ *	first element is the formal arguments, the second is the the body, and
+ *	the (optional) third is the namespace to execute the lambda term
+ *	within (the global namespace is assumed if it is absent).
  *
  *----------------------------------------------------------------------
  */
 
+static void
+DupLambdaInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    register Tcl_Obj *copyPtr)	/* Object with internal rep to set. */
+{
+    Proc *procPtr = srcPtr->internalRep.twoPtrValue.ptr1;
+    Tcl_Obj *nsObjPtr = srcPtr->internalRep.twoPtrValue.ptr2;
+
+    copyPtr->internalRep.twoPtrValue.ptr1 = procPtr;
+    copyPtr->internalRep.twoPtrValue.ptr2 = nsObjPtr;
+
+    procPtr->refCount++;
+    Tcl_IncrRefCount(nsObjPtr);
+    copyPtr->typePtr = &lambdaType;
+}
+
+static void
+FreeLambdaInternalRep(
+    register Tcl_Obj *objPtr)	/* CmdName object with internal representation
+				 * to free. */
+{
+    Proc *procPtr = objPtr->internalRep.twoPtrValue.ptr1;
+    Tcl_Obj *nsObjPtr = objPtr->internalRep.twoPtrValue.ptr2;
+
+    procPtr->refCount--;
+    if (procPtr->refCount == 0) {
+	TclProcCleanupProc(procPtr);
+    }
+    TclDecrRefCount(nsObjPtr);
+    objPtr->typePtr = NULL;
+}
+
 static int
-ProcBodySetFromAny(interp, objPtr)
-    Tcl_Interp *interp;			/* current interpreter */
-    Tcl_Obj *objPtr;			/* object pointer */
+SetLambdaFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
 {
-    panic("called ProcBodySetFromAny");
+    Interp *iPtr = (Interp *) interp;
+    char *name;
+    Tcl_Obj *argsPtr, *bodyPtr, *nsObjPtr, **objv, *errPtr;
+    int isNew, objc, result;
+    CmdFrame *cfPtr = NULL;
+    Proc *procPtr;
+
+    if (interp == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Convert objPtr to list type first; if it cannot be converted, or if its
+     * length is not 2, then it cannot be converted to lambdaType.
+     */
+
+    result = TclListObjGetElements(NULL, objPtr, &objc, &objv);
+    if ((result != TCL_OK) || ((objc != 2) && (objc != 3))) {
+	TclNewLiteralStringObj(errPtr, "can't interpret \"");
+	Tcl_AppendObjToObj(errPtr, objPtr);
+	Tcl_AppendToObj(errPtr, "\" as a lambda expression", -1);
+	Tcl_SetObjResult(interp, errPtr);
+	return TCL_ERROR;
+    }
+
+    argsPtr = objv[0];
+    bodyPtr = objv[1];
+
+    /*
+     * Create and initialize the Proc struct. The cmdPtr field is set to NULL
+     * to signal that this is an anonymous function.
+     */
+
+    name = TclGetString(objPtr);
+
+    if (TclCreateProc(interp, /*ignored nsPtr*/ NULL, name, argsPtr, bodyPtr,
+	    &procPtr) != TCL_OK) {
+	Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+		"\n    (parsing lambda expression \"%s\")", name));
+	return TCL_ERROR;
+    }
+
+    /*
+     * CAREFUL: TclCreateProc returns refCount==1! [Bug 1578454]
+     * procPtr->refCount = 1;
+     */
+
+    procPtr->cmdPtr = NULL;
+
+    /*
+     * TIP #280: Remember the line the apply body is starting on. In a Byte
+     * code context we ask the engine to provide us with the necessary
+     * information. This is for the initialization of the byte code compiler
+     * when the body is used for the first time.
+     *
+     * NOTE: The body is the second word in the 'objPtr'. Its location,
+     * accessible through 'context.line[1]' (see below) is therefore only the
+     * first approximation of the actual line the body is on. We have to use
+     * the string rep of the 'objPtr' to determine the exact line. This is
+     * available already through 'name'. Use 'TclListLines', see 'switch'
+     * (tclCmdMZ.c).
+     *
+     * This code is nearly identical to the #280 code in Tcl_ProcObjCmd, see
+     * this file. The differences are the different index of the body in the
+     * line array of the context, and the special processing mentioned in the
+     * previous paragraph to track into the list. Find a way to factor the
+     * common elements into a single function.
+     */
+
+    if (iPtr->cmdFramePtr) {
+	CmdFrame *contextPtr;
+
+	contextPtr = (CmdFrame *) TclStackAlloc(interp, sizeof(CmdFrame));
+	*contextPtr = *iPtr->cmdFramePtr;
+
+	if (contextPtr->type == TCL_LOCATION_BC) {
+	    /*
+	     * Retrieve the source context from the bytecode. This call
+	     * accounts for the reference to the source file, if any, held in
+	     * 'context.data.eval.path'.
+	     */
+
+	    TclGetSrcInfoForPc(contextPtr);
+	} else if (contextPtr->type == TCL_LOCATION_SOURCE) {
+	    /*
+	     * We created a new reference to the source file path name when we
+	     * created 'context' above. Account for the reference.
+	     */
+
+	    Tcl_IncrRefCount(contextPtr->data.eval.path);
+
+	}
+
+	if (contextPtr->type == TCL_LOCATION_SOURCE) {
+	    /*
+	     * We can record source location within a lambda only if the body
+	     * was not created by substitution.
+	     */
+
+	    if (contextPtr->line
+		    && (contextPtr->nline >= 2) && (contextPtr->line[1] >= 0)) {
+		int buf[2];
+
+		/*
+		 * Move from approximation (line of list cmd word) to actual
+		 * location (line of 2nd list element).
+		 */
+
+		cfPtr = (CmdFrame *) ckalloc(sizeof(CmdFrame));
+		TclListLines(objPtr, contextPtr->line[1], 2, buf, NULL);
+
+		cfPtr->level = -1;
+		cfPtr->type = contextPtr->type;
+		cfPtr->line = (int *) ckalloc(sizeof(int));
+		cfPtr->line[0] = buf[1];
+		cfPtr->nline = 1;
+		cfPtr->framePtr = NULL;
+		cfPtr->nextPtr = NULL;
+
+		cfPtr->data.eval.path = contextPtr->data.eval.path;
+		Tcl_IncrRefCount(cfPtr->data.eval.path);
+
+		cfPtr->cmd.str.cmd = NULL;
+		cfPtr->cmd.str.len = 0;
+	    }
+
+	    /*
+	     * 'contextPtr' is going out of scope. Release the reference that
+	     * it's holding to the source file path
+	     */
+
+	    Tcl_DecrRefCount(contextPtr->data.eval.path);
+	}
+	TclStackFree(interp, contextPtr);
+    }
+    Tcl_SetHashValue(Tcl_CreateHashEntry(iPtr->linePBodyPtr, (char *) procPtr,
+	    &isNew), cfPtr);
+
+    /*
+     * Set the namespace for this lambda: given by objv[2] understood as a
+     * global reference, or else global per default.
+     */
+
+    if (objc == 2) {
+	TclNewLiteralStringObj(nsObjPtr, "::");
+    } else {
+	char *nsName = TclGetString(objv[2]);
+
+	if ((*nsName != ':') || (*(nsName+1) != ':')) {
+	    TclNewLiteralStringObj(nsObjPtr, "::");
+	    Tcl_AppendObjToObj(nsObjPtr, objv[2]);
+	} else {
+	    nsObjPtr = objv[2];
+	}
+    }
+
+    Tcl_IncrRefCount(nsObjPtr);
 
     /*
-     * this to keep compilers happy.
+     * Free the list internalrep of objPtr - this will free argsPtr, but
+     * bodyPtr retains a reference from the Proc structure. Then finish the
+     * conversion to lambdaType.
      */
 
+    objPtr->typePtr->freeIntRepProc(objPtr);
+
+    objPtr->internalRep.twoPtrValue.ptr1 = procPtr;
+    objPtr->internalRep.twoPtrValue.ptr2 = nsObjPtr;
+    objPtr->typePtr = &lambdaType;
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * ProcBodyUpdateString --
+ * Tcl_ApplyObjCmd --
  *
- *  Tcl_ObjType's UpdateString function for the proc body object.
- *  Calls panic.
+ *	This object-based function is invoked to process the "apply" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
- *  None.
+ *	A standard Tcl object result value.
  *
  * Side effects:
- *  Calls panic, since we this type has no string representation.
+ *	Depends on the content of the lambda term (i.e., objv[1]).
  *
  *----------------------------------------------------------------------
  */
 
-static void
-ProcBodyUpdateString(objPtr)
-    Tcl_Obj *objPtr;		/* the object to update */
+int
+Tcl_ApplyObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
-    panic("called ProcBodyUpdateString");
-}
+    Interp *iPtr = (Interp *) interp;
+    Proc *procPtr = NULL;
+    Tcl_Obj *lambdaPtr, *nsObjPtr;
+    int result, isRootEnsemble;
+    Command cmd;
+    Tcl_Namespace *nsPtr;
+    ExtraFrameInfo efi;
+
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "lambdaExpr ?arg1 arg2 ...?");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Set lambdaPtr, convert it to lambdaType in the current interp if
+     * necessary.
+     */
+
+    lambdaPtr = objv[1];
+    if (lambdaPtr->typePtr == &lambdaType) {
+	procPtr = lambdaPtr->internalRep.twoPtrValue.ptr1;
+    }
+
+#define JOE_EXTENSION 0
+#if JOE_EXTENSION
+    else {
+	/*
+	 * Joe English's suggestion to allow cmdNames to function as lambdas.
+	 * Also requires making tclCmdNameType non-static in tclObj.c
+	 */
+
+	Tcl_Obj *elemPtr;
+	int numElem;
+
+	if ((lambdaPtr->typePtr == &tclCmdNameType) ||
+		(TclListObjGetElements(interp, lambdaPtr, &numElem,
+		&elemPtr) == TCL_OK && numElem == 1)) {
+	    return Tcl_EvalObjv(interp, objc-1, objv+1, 0);
+	}
+    }
+#endif
+
+    if ((procPtr == NULL) || (procPtr->iPtr != iPtr)) {
+	result = SetLambdaFromAny(interp, lambdaPtr);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	procPtr = lambdaPtr->internalRep.twoPtrValue.ptr1;
+    }
 
+    memset(&cmd, 0, sizeof(Command));
+    procPtr->cmdPtr = &cmd;
 
+    /*
+     * TIP#280 (semi-)HACK!
+     *
+     * Using cmd.clientData to tell [info frame] how to render the
+     * 'lambdaPtr'. The InfoFrameCmd will detect this case by testing cmd.hPtr
+     * for NULL. This condition holds here because of the 'memset' above, and
+     * nowhere else (in the core). Regular commands always have a valid
+     * 'hPtr', and lambda's never.
+     */
+
+    efi.length = 1;
+    efi.fields[0].name = "lambda";
+    efi.fields[0].proc = NULL;
+    efi.fields[0].clientData = lambdaPtr;
+    cmd.clientData = &efi;
+
+    /*
+     * Find the namespace where this lambda should run, and push a call frame
+     * for that namespace. Note that TclObjInterpProc() will pop it.
+     */
+
+    nsObjPtr = lambdaPtr->internalRep.twoPtrValue.ptr2;
+    result = TclGetNamespaceFromObj(interp, nsObjPtr, &nsPtr);
+    if (result != TCL_OK) {
+	return result;
+    }
+
+    cmd.nsPtr = (Namespace *) nsPtr;
+
+    isRootEnsemble = (iPtr->ensembleRewrite.sourceObjs == NULL);
+    if (isRootEnsemble) {
+	iPtr->ensembleRewrite.sourceObjs = objv;
+	iPtr->ensembleRewrite.numRemovedObjs = 1;
+	iPtr->ensembleRewrite.numInsertedObjs = 0;
+    } else {
+	iPtr->ensembleRewrite.numInsertedObjs -= 1;
+    }
+
+    result = PushProcCallFrame((ClientData) procPtr, interp, objc, objv, 1);
+    if (result == TCL_OK) {
+	result = TclObjInterpProcCore(interp, objv[1], 2, &MakeLambdaError);
+    }
+
+    if (isRootEnsemble) {
+	iPtr->ensembleRewrite.sourceObjs = NULL;
+	iPtr->ensembleRewrite.numRemovedObjs = 0;
+	iPtr->ensembleRewrite.numInsertedObjs = 0;
+    }
+
+    return result;
+}
+
 /*
  *----------------------------------------------------------------------
  *
- * TclCompileNoOp --
+ * MakeLambdaError --
  *
- *	Procedure called to compile noOp's
+ *	Function called by TclObjInterpProc to create the stack information
+ *	upon an error from a lambda term.
  *
  * Results:
- *	The return value is TCL_OK, indicating successful compilation.
+ *	The interpreter's error info trace is set to a value that supplements
+ *	the error code.
  *
  * Side effects:
- *	Instructions are added to envPtr to execute a noOp at runtime.
+ *	none.
  *
  *----------------------------------------------------------------------
  */
 
-static int
-TclCompileNoOp(interp, parsePtr, envPtr)
-    Tcl_Interp *interp;         /* Used for error reporting. */
-    Tcl_Parse *parsePtr;        /* Points to a parse structure for the
-                                 * command created by Tcl_ParseCommand. */
-    CompileEnv *envPtr;         /* Holds resulting instructions. */
+static void
+MakeLambdaError(
+    Tcl_Interp *interp,		/* The interpreter in which the procedure was
+				 * called. */
+    Tcl_Obj *procNameObj)	/* Name of the procedure. Used for error
+				 * messages and trace information. */
+{
+    int overflow, limit = 60, nameLen;
+    const char *procName = Tcl_GetStringFromObj(procNameObj, &nameLen);
+
+    overflow = (nameLen > limit);
+    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
+	    "\n    (lambda term \"%.*s%s\" line %d)",
+	    (overflow ? limit : nameLen), procName,
+	    (overflow ? "..." : ""), interp->errorLine));
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DisassembleObjCmd --
+ *
+ *	Implementation of the "::tcl::unsupported::disassemble" command. This
+ *	command is not documented, but will disassemble procedures, lambda
+ *	terms and general scripts. Note that will compile terms if necessary
+ *	in order to disassemble them.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_DisassembleObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
-    Tcl_Token *tokenPtr;
-    int i, code;
-    int savedStackDepth = envPtr->currStackDepth;
-
-    tokenPtr = parsePtr->tokenPtr;
-    for(i = 1; i < parsePtr->numWords; i++) {
-	tokenPtr = tokenPtr + tokenPtr->numComponents + 1;
-	envPtr->currStackDepth = savedStackDepth;
-
-	if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
-	    code = TclCompileTokens(interp, tokenPtr+1,
-	            tokenPtr->numComponents, envPtr);
-	    if (code != TCL_OK) {
-		return code;
+    static const char *types[] = {
+	"lambda", "proc", "script", NULL
+    };
+    enum Types {
+	DISAS_LAMBDA, DISAS_PROC, DISAS_SCRIPT
+    };
+    int idx, result;
+
+    if (objc != 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "type procName|lambdaTerm|script");
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIndexFromObj(interp, objv[1], types, "type", 0, &idx)!=TCL_OK){
+	return TCL_ERROR;
+    }
+
+    switch ((enum Types) idx) {
+    case DISAS_LAMBDA: {
+	Proc *procPtr = NULL;
+	Command cmd;
+	Tcl_Obj *nsObjPtr;
+	Tcl_Namespace *nsPtr;
+
+	/*
+	 * Compile (if uncompiled) and disassemble a lambda term.
+	 */
+
+	if (objv[2]->typePtr == &lambdaType) {
+	    procPtr = objv[2]->internalRep.twoPtrValue.ptr1;
+	}
+	if (procPtr == NULL || procPtr->iPtr != (Interp *) interp) {
+	    result = SetLambdaFromAny(interp, objv[2]);
+	    if (result != TCL_OK) {
+		return result;
 	    }
-	    TclEmitOpcode(INST_POP, envPtr);
+	    procPtr = objv[2]->internalRep.twoPtrValue.ptr1;
 	}
+
+	memset(&cmd, 0, sizeof(Command));
+	nsObjPtr = objv[2]->internalRep.twoPtrValue.ptr2;
+	result = TclGetNamespaceFromObj(interp, nsObjPtr, &nsPtr);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	cmd.nsPtr = (Namespace *) nsPtr;
+	procPtr->cmdPtr = &cmd;
+	result = PushProcCallFrame(procPtr, interp, objc, objv, 1);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	TclPopStackFrame(interp);
+	if (((ByteCode *) procPtr->bodyPtr->internalRep.twoPtrValue.ptr1)->flags
+		& TCL_BYTECODE_PRECOMPILED) {
+	    Tcl_AppendResult(interp, "may not disassemble prebuilt bytecode",
+		    NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, TclDisassembleByteCodeObj(procPtr->bodyPtr));
+	break;
+    }
+    case DISAS_PROC: {
+	Proc *procPtr = TclFindProc((Interp *) interp, TclGetString(objv[2]));
+
+	if (procPtr == NULL) {
+	    Tcl_AppendResult(interp, "\"", TclGetString(objv[2]),
+		    "\" isn't a procedure", NULL);
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Compile (if uncompiled) and disassemble a procedure.
+	 */
+
+	result = PushProcCallFrame(procPtr, interp, 2, objv+1, 1);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	TclPopStackFrame(interp);
+	if (((ByteCode *) procPtr->bodyPtr->internalRep.twoPtrValue.ptr1)->flags
+		& TCL_BYTECODE_PRECOMPILED) {
+	    Tcl_AppendResult(interp, "may not disassemble prebuilt bytecode",
+		    NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, TclDisassembleByteCodeObj(procPtr->bodyPtr));
+	break;
+    }
+    case DISAS_SCRIPT:
+	/*
+	 * Compile and disassemble a script.
+	 */
+
+	if (objv[2]->typePtr != &tclByteCodeType) {
+	    if (TclSetByteCodeFromAny(interp, objv[2], NULL, NULL) != TCL_OK){
+		return TCL_ERROR;
+	    }
+	}
+	Tcl_SetObjResult(interp, TclDisassembleByteCodeObj(objv[2]));
+	break;
     }
-    envPtr->currStackDepth = savedStackDepth;
-    TclEmitPush(TclRegisterLiteral(envPtr, "", 0, /*onHeap*/ 0), envPtr);
     return TCL_OK;
 }
 
@@ -2003,4 +2912,3 @@ TclCompileNoOp(interp, parsePtr, envPtr)
  * fill-column: 78
  * End:
  */
-
diff --git a/generic/tclRegexp.c b/generic/tclRegexp.c
index c161d69..dac6aba 100644
--- a/generic/tclRegexp.c
+++ b/generic/tclRegexp.c
@@ -1,24 +1,23 @@
-/* 
+/*
  * tclRegexp.c --
  *
- *	This file contains the public interfaces to the Tcl regular
- *	expression mechanism.
+ *	This file contains the public interfaces to the Tcl regular expression
+ *	mechanism.
  *
  * Copyright (c) 1998 by Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 #include "tclRegexp.h"
 
 /*
  *----------------------------------------------------------------------
- * The routines in this file use Henry Spencer's regular expression
- * package contained in the following additional source files:
+ * The routines in this file use Henry Spencer's regular expression package
+ * contained in the following additional source files:
  *
  *	regc_color.c	regc_cvec.c	regc_lex.c
  *	regc_nfa.c	regcomp.c	regcustom.h
@@ -27,23 +26,23 @@
  *	regfronts.c	regguts.h
  *
  * Copyright (c) 1998 Henry Spencer.  All rights reserved.
- * 
+ *
  * Development of this software was funded, in part, by Cray Research Inc.,
  * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results.  The author
- * thanks all of them. 
- * 
+ * Corporation, none of whom are responsible for the results. The author
+ * thanks all of them.
+ *
  * Redistribution and use in source and binary forms -- with or without
  * modification -- are permitted for any purpose, provided that
  * redistributions in source form retain this entire copyright notice and
  * indicate the origin and nature of any modifications.
- * 
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- * 
+ *
+ * I'd appreciate being given credit for this package in the documentation of
+ * software which uses it, but that is not a requirement.
+ *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
@@ -67,15 +66,14 @@
 
 typedef struct ThreadSpecificData {
     int initialized;		/* Set to 1 when the module is initialized. */
-    char *patterns[NUM_REGEXPS];/* Strings corresponding to compiled
-				 * regular expression patterns.	 NULL
-				 * means that this slot isn't used.
-				 * Malloc-ed. */
+    char *patterns[NUM_REGEXPS];/* Strings corresponding to compiled regular
+				 * expression patterns. NULL means that this
+				 * slot isn't used. Malloc-ed. */
     int patLengths[NUM_REGEXPS];/* Number of non-null characters in
-				 * corresponding entry in patterns.
-				 * -1 means entry isn't used. */
+				 * corresponding entry in patterns. -1 means
+				 * entry isn't used. */
     struct TclRegexp *regexps[NUM_REGEXPS];
-				/* Compiled forms of above strings.  Also
+				/* Compiled forms of above strings. Also
 				 * malloc-ed, or NULL if not in use yet. */
 } ThreadSpecificData;
 
@@ -85,49 +83,46 @@ static Tcl_ThreadDataKey dataKey;
  * Declarations for functions used only in this file.
  */
 
-static TclRegexp *	CompileRegexp _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *pattern, int length, int flags));
-static void		DupRegexpInternalRep _ANSI_ARGS_((Tcl_Obj *srcPtr,
-			    Tcl_Obj *copyPtr));
-static void		FinalizeRegexp _ANSI_ARGS_((ClientData clientData));
-static void		FreeRegexp _ANSI_ARGS_((TclRegexp *regexpPtr));
-static void		FreeRegexpInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr));
-static int		RegExpExecUniChar _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_RegExp re, CONST Tcl_UniChar *uniString,
-			    int numChars, int nmatches, int flags));
-static int		SetRegexpFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
+static TclRegexp *	CompileRegexp(Tcl_Interp *interp, const char *pattern,
+			    int length, int flags);
+static void		DupRegexpInternalRep(Tcl_Obj *srcPtr,
+			    Tcl_Obj *copyPtr);
+static void		FinalizeRegexp(ClientData clientData);
+static void		FreeRegexp(TclRegexp *regexpPtr);
+static void		FreeRegexpInternalRep(Tcl_Obj *objPtr);
+static int		RegExpExecUniChar(Tcl_Interp *interp, Tcl_RegExp re,
+			    const Tcl_UniChar *uniString, int numChars,
+			    int nmatches, int flags);
+static int		SetRegexpFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
 
 /*
- * The regular expression Tcl object type.  This serves as a cache
- * of the compiled form of the regular expression.
+ * The regular expression Tcl object type. This serves as a cache of the
+ * compiled form of the regular expression.
  */
 
-static Tcl_ObjType tclRegexpType = {
+Tcl_ObjType tclRegexpType = {
     "regexp",				/* name */
     FreeRegexpInternalRep,		/* freeIntRepProc */
     DupRegexpInternalRep,		/* dupIntRepProc */
     NULL,				/* updateStringProc */
     SetRegexpFromAny			/* setFromAnyProc */
 };
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_RegExpCompile --
  *
- *	Compile a regular expression into a form suitable for fast
- *	matching.  This procedure is DEPRECATED in favor of the
- *	object version of the command.
+ *	Compile a regular expression into a form suitable for fast matching.
+ *	This function is DEPRECATED in favor of the object version of the
+ *	command.
  *
  * Results:
- *	The return value is a pointer to the compiled form of string,
- *	suitable for passing to Tcl_RegExpExec.  This compiled form
- *	is only valid up until the next call to this procedure, so
- *	don't keep these around for a long time!  If an error occurred
- *	while compiling the pattern, then NULL is returned and an error
- *	message is left in the interp's result.
+ *	The return value is a pointer to the compiled form of string, suitable
+ *	for passing to Tcl_RegExpExec. This compiled form is only valid up
+ *	until the next call to this function, so don't keep these around for a
+ *	long time! If an error occurred while compiling the pattern, then NULL
+ *	is returned and an error message is left in the interp's result.
  *
  * Side effects:
  *	Updates the cache of compiled regexps.
@@ -136,13 +131,13 @@ static Tcl_ObjType tclRegexpType = {
  */
 
 Tcl_RegExp
-Tcl_RegExpCompile(interp, string)
-    Tcl_Interp *interp;		/* For use in error reporting and
-				 * to access the interp regexp cache. */
-    CONST char *string;		/* String for which to produce
-				 * compiled regular expression. */
+Tcl_RegExpCompile(
+    Tcl_Interp *interp,		/* For use in error reporting and to access
+				 * the interp regexp cache. */
+    const char *pattern)	/* String for which to produce compiled
+				 * regular expression. */
 {
-    return (Tcl_RegExp) CompileRegexp(interp, string, (int) strlen(string),
+    return (Tcl_RegExp) CompileRegexp(interp, pattern, (int) strlen(pattern),
 	    REG_ADVANCED);
 }
 
@@ -151,15 +146,14 @@ Tcl_RegExpCompile(interp, string)
  *
  * Tcl_RegExpExec --
  *
- *	Execute the regular expression matcher using a compiled form
- *	of a regular expression and save information about any match
- *	that is found.
+ *	Execute the regular expression matcher using a compiled form of a
+ *	regular expression and save information about any match that is found.
  *
  * Results:
- *	If an error occurs during the matching operation then -1
- *	is returned and the interp's result contains an error message.
- *	Otherwise the return value is 1 if a matching range is
- *	found and 0 if there is no matching range.
+ *	If an error occurs during the matching operation then -1 is returned
+ *	and the interp's result contains an error message. Otherwise the
+ *	return value is 1 if a matching range is found and 0 if there is no
+ *	matching range.
  *
  * Side effects:
  *	None.
@@ -168,27 +162,27 @@ Tcl_RegExpCompile(interp, string)
  */
 
 int
-Tcl_RegExpExec(interp, re, string, start)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. */
-    Tcl_RegExp re;		/* Compiled regular expression;  must have
-				 * been returned by previous call to
+Tcl_RegExpExec(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. */
+    Tcl_RegExp re,		/* Compiled regular expression; must have been
+				 * returned by previous call to
 				 * Tcl_GetRegExpFromObj. */
-    CONST char *string;		/* String against which to match re. */
-    CONST char *start;		/* If string is part of a larger string,
-				 * this identifies beginning of larger
-				 * string, so that "^" won't match. */
+    const char *text,		/* Text against which to match re. */
+    const char *start)		/* If text is part of a larger string, this
+				 * identifies beginning of larger string, so
+				 * that "^" won't match. */
 {
     int flags, result, numChars;
     TclRegexp *regexp = (TclRegexp *)re;
     Tcl_DString ds;
-    CONST Tcl_UniChar *ustr;
+    const Tcl_UniChar *ustr;
 
     /*
-     * If the starting point is offset from the beginning of the buffer,
-     * then we need to tell the regexp engine not to match "^".
+     * If the starting point is offset from the beginning of the buffer, then
+     * we need to tell the regexp engine not to match "^".
      */
 
-    if (string > start) {
+    if (text > start) {
 	flags = REG_NOTBOL;
     } else {
 	flags = 0;
@@ -198,7 +192,7 @@ Tcl_RegExpExec(interp, re, string, start)
      * Remember the string for use by Tcl_RegExpRange().
      */
 
-    regexp->string = string;
+    regexp->string = text;
     regexp->objPtr = NULL;
 
     /*
@@ -206,10 +200,10 @@ Tcl_RegExpExec(interp, re, string, start)
      */
 
     Tcl_DStringInit(&ds);
-    ustr = Tcl_UtfToUniCharDString(string, -1, &ds);
+    ustr = Tcl_UtfToUniCharDString(text, -1, &ds);
     numChars = Tcl_DStringLength(&ds) / sizeof(Tcl_UniChar);
-    result = RegExpExecUniChar(interp, re, ustr, numChars,
-	    -1 /* nmatches */, flags);
+    result = RegExpExecUniChar(interp, re, ustr, numChars, -1 /* nmatches */,
+	    flags);
     Tcl_DStringFree(&ds);
 
     return result;
@@ -225,7 +219,7 @@ Tcl_RegExpExec(interp, re, string, start)
  *
  * Results:
  *	The variables at *startPtr and *endPtr are modified to hold the
- *	addresses of the endpoints of the range given by index.  If the
+ *	addresses of the endpoints of the range given by index. If the
  *	specified range doesn't exist then NULLs are returned.
  *
  * Side effects:
@@ -235,19 +229,19 @@ Tcl_RegExpExec(interp, re, string, start)
  */
 
 void
-Tcl_RegExpRange(re, index, startPtr, endPtr)
-    Tcl_RegExp re;		/* Compiled regular expression that has
-				 * been passed to Tcl_RegExpExec. */
-    int index;			/* 0 means give the range of the entire
-				 * match, > 0 means give the range of
-				 * a matching subrange. */
-    CONST char **startPtr;	/* Store address of first character in
-				 * (sub-) range here. */
-    CONST char **endPtr;	/* Store address of character just after last
-				 * in (sub-) range here. */
+Tcl_RegExpRange(
+    Tcl_RegExp re,		/* Compiled regular expression that has been
+				 * passed to Tcl_RegExpExec. */
+    int index,			/* 0 means give the range of the entire match,
+				 * > 0 means give the range of a matching
+				 * subrange. */
+    const char **startPtr,	/* Store address of first character in
+				 * (sub-)range here. */
+    const char **endPtr)	/* Store address of character just after last
+				 * in (sub-)range here. */
 {
     TclRegexp *regexpPtr = (TclRegexp *) re;
-    CONST char *string;
+    const char *string;
 
     if ((size_t) index > regexpPtr->re.re_nsub) {
 	*startPtr = *endPtr = NULL;
@@ -255,7 +249,7 @@ Tcl_RegExpRange(re, index, startPtr, endPtr)
 	*startPtr = *endPtr = NULL;
     } else {
 	if (regexpPtr->objPtr) {
-	    string = Tcl_GetString(regexpPtr->objPtr);
+	    string = TclGetString(regexpPtr->objPtr);
 	} else {
 	    string = regexpPtr->string;
 	}
@@ -270,14 +264,13 @@ Tcl_RegExpRange(re, index, startPtr, endPtr)
  * RegExpExecUniChar --
  *
  *	Execute the regular expression matcher using a compiled form of a
- *	regular expression and save information about any match that is
- *	found.
+ *	regular expression and save information about any match that is found.
  *
  * Results:
- *	If an error occurs during the matching operation then -1 is
- *	returned and an error message is left in interp's result.
- *	Otherwise the return value is 1 if a matching range was found or
- *	0 if there was no matching range.
+ *	If an error occurs during the matching operation then -1 is returned
+ *	and an error message is left in interp's result. Otherwise the return
+ *	value is 1 if a matching range was found or 0 if there was no matching
+ *	range.
  *
  * Side effects:
  *	None.
@@ -286,17 +279,17 @@ Tcl_RegExpRange(re, index, startPtr, endPtr)
  */
 
 static int
-RegExpExecUniChar(interp, re, wString, numChars, nmatches, flags)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. */
-    Tcl_RegExp re;		/* Compiled regular expression; returned by
-				 * a previous call to Tcl_GetRegExpFromObj */
-    CONST Tcl_UniChar *wString;	/* String against which to match re. */
-    int numChars;		/* Length of Tcl_UniChar string (must
-				 * be >= 0). */
-    int nmatches;		/* How many subexpression matches (counting
-				 * the whole match as subexpression 0) are
-				 * of interest.  -1 means "don't know". */
-    int flags;			/* Regular expression flags. */
+RegExpExecUniChar(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. */
+    Tcl_RegExp re,		/* Compiled regular expression; returned by a
+				 * previous call to Tcl_GetRegExpFromObj */
+    const Tcl_UniChar *wString,	/* String against which to match re. */
+    int numChars,		/* Length of Tcl_UniChar string (must be
+				 * >=0). */
+    int nmatches,		/* How many subexpression matches (counting
+				 * the whole match as subexpression 0) are of
+				 * interest. -1 means "don't know". */
+    int flags)			/* Regular expression flags. */
 {
     int status;
     TclRegexp *regexpPtr = (TclRegexp *) re;
@@ -338,8 +331,8 @@ RegExpExecUniChar(interp, re, wString, numChars, nmatches, flags)
  *
  * Results:
  *	The variables at *startPtr and *endPtr are modified to hold the
- *	offsets of the endpoints of the range given by index.  If the
- *	specified range doesn't exist then -1s are supplied.
+ *	offsets of the endpoints of the range given by index. If the specified
+ *	range doesn't exist then -1s are supplied.
  *
  * Side effects:
  *	None.
@@ -348,17 +341,17 @@ RegExpExecUniChar(interp, re, wString, numChars, nmatches, flags)
  */
 
 void
-TclRegExpRangeUniChar(re, index, startPtr, endPtr)
-    Tcl_RegExp re;		/* Compiled regular expression that has
-				 * been passed to Tcl_RegExpExec. */
-    int index;			/* 0 means give the range of the entire
-				 * match, > 0 means give the range of
-				 * a matching subrange, -1 means the
-				 * range of the rm_extend field. */
-    int *startPtr;		/* Store address of first character in
-				 * (sub-) range here. */
-    int *endPtr;		/* Store address of character just after last
-				 * in (sub-) range here. */
+TclRegExpRangeUniChar(
+    Tcl_RegExp re,		/* Compiled regular expression that has been
+				 * passed to Tcl_RegExpExec. */
+    int index,			/* 0 means give the range of the entire match,
+				 * > 0 means give the range of a matching
+				 * subrange, -1 means the range of the
+				 * rm_extend field. */
+    int *startPtr,		/* Store address of first character in
+				 * (sub-)range here. */
+    int *endPtr)		/* Store address of character just after last
+				 * in (sub-)range here. */
 {
     TclRegexp *regexpPtr = (TclRegexp *) re;
 
@@ -382,10 +375,9 @@ TclRegExpRangeUniChar(re, index, startPtr, endPtr)
  *	See if a string matches a regular expression.
  *
  * Results:
- *	If an error occurs during the matching operation then -1
- *	is returned and the interp's result contains an error message.
- *	Otherwise the return value is 1 if "string" matches "pattern"
- *	and 0 otherwise.
+ *	If an error occurs during the matching operation then -1 is returned
+ *	and the interp's result contains an error message. Otherwise the
+ *	return value is 1 if "text" matches "pattern" and 0 otherwise.
  *
  * Side effects:
  *	None.
@@ -394,11 +386,10 @@ TclRegExpRangeUniChar(re, index, startPtr, endPtr)
  */
 
 int
-Tcl_RegExpMatch(interp, string, pattern)
-    Tcl_Interp *interp;		/* Used for error reporting. May be NULL. */
-    CONST char *string;		/* String. */
-    CONST char *pattern;	/* Regular expression to match against
-				 * string. */
+Tcl_RegExpMatch(
+    Tcl_Interp *interp,		/* Used for error reporting. May be NULL. */
+    const char *text,		/* Text to search for pattern matches. */
+    const char *pattern)	/* Regular expression to match against text. */
 {
     Tcl_RegExp re;
 
@@ -406,7 +397,7 @@ Tcl_RegExpMatch(interp, string, pattern)
     if (re == NULL) {
 	return -1;
     }
-    return Tcl_RegExpExec(interp, re, string, string);
+    return Tcl_RegExpExec(interp, re, text, text);
 }
 
 /*
@@ -417,10 +408,9 @@ Tcl_RegExpMatch(interp, string, pattern)
  *	Execute a precompiled regexp against the given object.
  *
  * Results:
- *	If an error occurs during the matching operation then -1
- *	is returned and the interp's result contains an error message.
- *	Otherwise the return value is 1 if "string" matches "pattern"
- *	and 0 otherwise.
+ *	If an error occurs during the matching operation then -1 is returned
+ *	and the interp's result contains an error message. Otherwise the
+ *	return value is 1 if "string" matches "pattern" and 0 otherwise.
  *
  * Side effects:
  *	Converts the object to a Unicode object.
@@ -429,38 +419,59 @@ Tcl_RegExpMatch(interp, string, pattern)
  */
 
 int
-Tcl_RegExpExecObj(interp, re, objPtr, offset, nmatches, flags)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. */
-    Tcl_RegExp re;		/* Compiled regular expression;  must have
-				 * been returned by previous call to
+Tcl_RegExpExecObj(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. */
+    Tcl_RegExp re,		/* Compiled regular expression; must have been
+				 * returned by previous call to
 				 * Tcl_GetRegExpFromObj. */
-    Tcl_Obj *objPtr;		/* String against which to match re. */
-    int offset;			/* Character index that marks where matching
+    Tcl_Obj *textObj,		/* Text against which to match re. */
+    int offset,			/* Character index that marks where matching
 				 * should begin. */
-    int nmatches;		/* How many subexpression matches (counting
-				 * the whole match as subexpression 0) are
-				 * of interest.  -1 means all of them. */
-    int flags;			/* Regular expression execution flags. */
+    int nmatches,		/* How many subexpression matches (counting
+				 * the whole match as subexpression 0) are of
+				 * interest. -1 means all of them. */
+    int flags)			/* Regular expression execution flags. */
 {
     TclRegexp *regexpPtr = (TclRegexp *) re;
     Tcl_UniChar *udata;
     int length;
+    int reflags = regexpPtr->flags;
+#define TCL_REG_GLOBOK_FLAGS (TCL_REG_ADVANCED | TCL_REG_NOSUB | TCL_REG_NOCASE)
+
+    /*
+     * Take advantage of the equivalent glob pattern, if one exists.
+     * This is possible based only on the right mix of incoming flags (0)
+     * and regexp compile flags.
+     */
+    if ((offset == 0) && (nmatches == 0) && (flags == 0)
+	    && !(reflags & ~TCL_REG_GLOBOK_FLAGS)
+	    && (regexpPtr->globObjPtr != NULL)) {
+	int nocase = (reflags & TCL_REG_NOCASE) ? TCL_MATCH_NOCASE : 0;
+
+	/*
+	 * Pass to TclStringMatchObj for obj-specific handling.
+	 * XXX: Currently doesn't take advantage of exact-ness that
+	 * XXX: TclReToGlob tells us about
+	 */
+
+	return TclStringMatchObj(textObj, regexpPtr->globObjPtr, nocase);
+    }
 
     /*
      * Save the target object so we can extract strings from it later.
      */
 
     regexpPtr->string = NULL;
-    regexpPtr->objPtr = objPtr;
+    regexpPtr->objPtr = textObj;
 
-    udata = Tcl_GetUnicodeFromObj(objPtr, &length);
+    udata = Tcl_GetUnicodeFromObj(textObj, &length);
 
     if (offset > length) {
 	offset = length;
     }
     udata += offset;
     length -= offset;
-    
+
     return RegExpExecUniChar(interp, re, udata, length, nmatches, flags);
 }
 
@@ -472,10 +483,9 @@ Tcl_RegExpExecObj(interp, re, objPtr, offset, nmatches, flags)
  *	See if an object matches a regular expression.
  *
  * Results:
- *	If an error occurs during the matching operation then -1
- *	is returned and the interp's result contains an error message.
- *	Otherwise the return value is 1 if "string" matches "pattern"
- *	and 0 otherwise.
+ *	If an error occurs during the matching operation then -1 is returned
+ *	and the interp's result contains an error message. Otherwise the
+ *	return value is 1 if "text" matches "pattern" and 0 otherwise.
  *
  * Side effects:
  *	Changes the internal rep of the pattern and string objects.
@@ -484,10 +494,10 @@ Tcl_RegExpExecObj(interp, re, objPtr, offset, nmatches, flags)
  */
 
 int
-Tcl_RegExpMatchObj(interp, stringObj, patternObj)
-    Tcl_Interp *interp;		/* Used for error reporting. May be NULL. */
-    Tcl_Obj *stringObj;		/* Object containing the String to search. */
-    Tcl_Obj *patternObj;	/* Regular expression to match against
+Tcl_RegExpMatchObj(
+    Tcl_Interp *interp,		/* Used for error reporting. May be NULL. */
+    Tcl_Obj *textObj,		/* Object containing the String to search. */
+    Tcl_Obj *patternObj)	/* Regular expression to match against
 				 * string. */
 {
     Tcl_RegExp re;
@@ -497,7 +507,7 @@ Tcl_RegExpMatchObj(interp, stringObj, patternObj)
     if (re == NULL) {
 	return -1;
     }
-    return Tcl_RegExpExecObj(interp, re, stringObj, 0 /* offset */,
+    return Tcl_RegExpExecObj(interp, re, textObj, 0 /* offset */,
 	    0 /* nmatches */, 0 /* flags */);
 }
 
@@ -518,9 +528,9 @@ Tcl_RegExpMatchObj(interp, stringObj, patternObj)
  */
 
 void
-Tcl_RegExpGetInfo(regexp, infoPtr)
-    Tcl_RegExp regexp;		/* Pattern from which to get subexpressions. */
-    Tcl_RegExpInfo *infoPtr;	/* Match information is stored here.  */
+Tcl_RegExpGetInfo(
+    Tcl_RegExp regexp,		/* Pattern from which to get subexpressions. */
+    Tcl_RegExpInfo *infoPtr)	/* Match information is stored here. */
 {
     TclRegexp *regexpPtr = (TclRegexp *) regexp;
 
@@ -534,14 +544,14 @@ Tcl_RegExpGetInfo(regexp, infoPtr)
  *
  * Tcl_GetRegExpFromObj --
  *
- *	Compile a regular expression into a form suitable for fast
- *	matching.  This procedure caches the result in a Tcl_Obj.
+ *	Compile a regular expression into a form suitable for fast matching.
+ *	This function caches the result in a Tcl_Obj.
  *
  * Results:
- *	The return value is a pointer to the compiled form of string,
- *	suitable for passing to Tcl_RegExpExec.  If an error occurred
- *	while compiling the pattern, then NULL is returned and an error
- *	message is left in the interp's result.
+ *	The return value is a pointer to the compiled form of string, suitable
+ *	for passing to Tcl_RegExpExec. If an error occurred while compiling
+ *	the pattern, then NULL is returned and an error message is left in the
+ *	interp's result.
  *
  * Side effects:
  *	Updates the native rep of the Tcl_Obj.
@@ -550,25 +560,28 @@ Tcl_RegExpGetInfo(regexp, infoPtr)
  */
 
 Tcl_RegExp
-Tcl_GetRegExpFromObj(interp, objPtr, flags)
-    Tcl_Interp *interp;		/* For use in error reporting, and to access
+Tcl_GetRegExpFromObj(
+    Tcl_Interp *interp,		/* For use in error reporting, and to access
 				 * the interp regexp cache. */
-    Tcl_Obj *objPtr;		/* Object whose string rep contains regular
-				 * expression pattern.  Internal rep will be
+    Tcl_Obj *objPtr,		/* Object whose string rep contains regular
+				 * expression pattern. Internal rep will be
 				 * changed to compiled form of this regular
 				 * expression. */
-    int flags;			/* Regular expression compilation flags. */
+    int flags)			/* Regular expression compilation flags. */
 {
     int length;
-    Tcl_ObjType *typePtr;
     TclRegexp *regexpPtr;
     char *pattern;
 
-    typePtr = objPtr->typePtr;
-    regexpPtr = (TclRegexp *) objPtr->internalRep.otherValuePtr;
+    /*
+     * This is OK because we only actually interpret this value properly as a
+     * TclRegexp* when the type is tclRegexpType.
+     */
+
+    regexpPtr = (TclRegexp *) objPtr->internalRep.twoPtrValue.ptr1;
 
-    if ((typePtr != &tclRegexpType) || (regexpPtr->flags != flags)) {
-	pattern = Tcl_GetStringFromObj(objPtr, &length);
+    if ((objPtr->typePtr != &tclRegexpType) || (regexpPtr->flags != flags)) {
+	pattern = TclGetStringFromObj(objPtr, &length);
 
 	regexpPtr = CompileRegexp(interp, pattern, length, flags);
 	if (regexpPtr == NULL) {
@@ -577,7 +590,7 @@ Tcl_GetRegExpFromObj(interp, objPtr, flags)
 
 	/*
 	 * Add a reference to the regexp so it will persist even if it is
-	 * pushed out of the current thread's regexp cache.  This reference
+	 * pushed out of the current thread's regexp cache. This reference
 	 * will be removed when the object's internal rep is freed.
 	 */
 
@@ -587,10 +600,8 @@ Tcl_GetRegExpFromObj(interp, objPtr, flags)
 	 * Free the old representation and set our type.
 	 */
 
-	if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
-	    (*typePtr->freeIntRepProc)(objPtr);
-	}
-	objPtr->internalRep.otherValuePtr = (VOID *) regexpPtr;
+	TclFreeIntRep(objPtr);
+	objPtr->internalRep.twoPtrValue.ptr1 = (void *) regexpPtr;
 	objPtr->typePtr = &tclRegexpType;
     }
     return (Tcl_RegExp) regexpPtr;
@@ -604,10 +615,10 @@ Tcl_GetRegExpFromObj(interp, objPtr, flags)
  *	Return information about a compiled regular expression.
  *
  * Results:
- *	The return value is -1 for failure, 0 for success, although at
- *	the moment there's nothing that could fail.  On success, a list
- *	is left in the interp's result:  first element is the subexpression
- *	count, second is a list of re_info bit names.
+ *	The return value is -1 for failure, 0 for success, although at the
+ *	moment there's nothing that could fail. On success, a list is left in
+ *	the interp's result: first element is the subexpression count, second
+ *	is a list of re_info bit names.
  *
  * Side effects:
  *	None.
@@ -616,16 +627,16 @@ Tcl_GetRegExpFromObj(interp, objPtr, flags)
  */
 
 int
-TclRegAbout(interp, re)
-    Tcl_Interp *interp;		/* For use in variable assignment. */
-    Tcl_RegExp re;		/* The compiled regular expression. */
+TclRegAbout(
+    Tcl_Interp *interp,		/* For use in variable assignment. */
+    Tcl_RegExp re)		/* The compiled regular expression. */
 {
-    TclRegexp *regexpPtr = (TclRegexp *)re;
-    char buf[TCL_INTEGER_SPACE];
-    static struct infoname {
+    TclRegexp *regexpPtr = (TclRegexp *) re;
+    struct infoname {
 	int bit;
-	char *text;
-    } infonames[] = {
+	const char *text;
+    };
+    static const struct infoname infonames[] = {
 	{REG_UBACKREF,		"REG_UBACKREF"},
 	{REG_ULOOKAHEAD,	"REG_ULOOKAHEAD"},
 	{REG_UBOUNDS,		"REG_UBOUNDS"},
@@ -640,37 +651,40 @@ TclRegAbout(interp, re)
 	{REG_UEMPTYMATCH,	"REG_UEMPTYMATCH"},
 	{REG_UIMPOSSIBLE,	"REG_UIMPOSSIBLE"},
 	{REG_USHORTEST,		"REG_USHORTEST"},
-	{0,			""}
+	{0,			NULL}
     };
-    struct infoname *inf;
-    int n;
+    const struct infoname *inf;
+    Tcl_Obj *infoObj;
+
+    /*
+     * The reset here guarantees that the interpreter result is empty and
+     * unshared. This means that we can use Tcl_ListObjAppendElement on the
+     * result object quite safely.
+     */
 
     Tcl_ResetResult(interp);
 
-    sprintf(buf, "%u", (unsigned)(regexpPtr->re.re_nsub));
-    Tcl_AppendElement(interp, buf);
+    /*
+     * Assume that there will never be more than INT_MAX subexpressions. This
+     * is a pretty reasonable assumption; the RE engine doesn't scale _that_
+     * well and Tcl has other limits that constrain things as well...
+     */
+
+    Tcl_ListObjAppendElement(NULL, Tcl_GetObjResult(interp),
+	    Tcl_NewIntObj((int) regexpPtr->re.re_nsub));
 
     /*
-     * Must count bits before generating list, because we must know
-     * whether {} are needed before we start appending names.
+     * Now append a list of all the bit-flags set for the RE.
      */
-    n = 0;
-    for (inf = infonames; inf->bit != 0; inf++) {
-	if (regexpPtr->re.re_info&inf->bit) {
-	    n++;
-	}
-    }
-    if (n != 1) {
-	Tcl_AppendResult(interp, " {", NULL);
-    }
-    for (inf = infonames; inf->bit != 0; inf++) {
-	if (regexpPtr->re.re_info&inf->bit) {
-	    Tcl_AppendElement(interp, inf->text);
+
+    TclNewObj(infoObj);
+    for (inf=infonames ; inf->bit != 0 ; inf++) {
+	if (regexpPtr->re.re_info & inf->bit) {
+	    Tcl_ListObjAppendElement(NULL, infoObj,
+		    Tcl_NewStringObj(inf->text, -1));
 	}
     }
-    if (n != 1) {
-	Tcl_AppendResult(interp, "}", NULL);
-    }
+    Tcl_ListObjAppendElement(NULL, Tcl_GetObjResult(interp), infoObj);
 
     return 0;
 }
@@ -692,26 +706,25 @@ TclRegAbout(interp, re)
  */
 
 void
-TclRegError(interp, msg, status)
-    Tcl_Interp *interp;		/* Interpreter for error reporting. */
-    CONST char *msg;		/* Message to prepend to error. */
-    int status;			/* Status code to report. */
+TclRegError(
+    Tcl_Interp *interp,		/* Interpreter for error reporting. */
+    const char *msg,		/* Message to prepend to error. */
+    int status)			/* Status code to report. */
 {
     char buf[100];		/* ample in practice */
     char cbuf[100];		/* lots in practice */
     size_t n;
-    char *p;
+    const char *p;
 
     Tcl_ResetResult(interp);
-    n = TclReError(status, (regex_t *)NULL, buf, sizeof(buf));
+    n = TclReError(status, NULL, buf, sizeof(buf));
     p = (n > sizeof(buf)) ? "..." : "";
     Tcl_AppendResult(interp, msg, buf, p, NULL);
 
     sprintf(cbuf, "%d", status);
-    (VOID) TclReError(REG_ITOA, (regex_t *)NULL, cbuf, sizeof(cbuf));
+    (void) TclReError(REG_ITOA, NULL, cbuf, sizeof(cbuf));
     Tcl_SetErrorCode(interp, "REGEXP", cbuf, buf, NULL);
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -731,10 +744,10 @@ TclRegError(interp, msg, status)
  */
 
 static void
-FreeRegexpInternalRep(objPtr)
-    Tcl_Obj *objPtr;		/* Regexp object with internal rep to free. */
+FreeRegexpInternalRep(
+    Tcl_Obj *objPtr)		/* Regexp object with internal rep to free. */
 {
-    TclRegexp *regexpRepPtr = (TclRegexp *) objPtr->internalRep.otherValuePtr;
+    TclRegexp *regexpRepPtr = (TclRegexp *) objPtr->internalRep.twoPtrValue.ptr1;
 
     /*
      * If this is the last reference to the regexp, free it.
@@ -743,6 +756,7 @@ FreeRegexpInternalRep(objPtr)
     if (--(regexpRepPtr->refCount) <= 0) {
 	FreeRegexp(regexpRepPtr);
     }
+    objPtr->typePtr = NULL;
 }
 
 /*
@@ -750,8 +764,8 @@ FreeRegexpInternalRep(objPtr)
  *
  * DupRegexpInternalRep --
  *
- *	We copy the reference to the compiled regexp and bump its
- *	reference count.
+ *	We copy the reference to the compiled regexp and bump its reference
+ *	count.
  *
  * Results:
  *	None.
@@ -763,13 +777,14 @@ FreeRegexpInternalRep(objPtr)
  */
 
 static void
-DupRegexpInternalRep(srcPtr, copyPtr)
-    Tcl_Obj *srcPtr;		/* Object with internal rep to copy. */
-    Tcl_Obj *copyPtr;		/* Object with internal rep to set. */
+DupRegexpInternalRep(
+    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
+    Tcl_Obj *copyPtr)		/* Object with internal rep to set. */
 {
-    TclRegexp *regexpPtr = (TclRegexp *) srcPtr->internalRep.otherValuePtr;
+    TclRegexp *regexpPtr = (TclRegexp *) srcPtr->internalRep.twoPtrValue.ptr1;
+
     regexpPtr->refCount++;
-    copyPtr->internalRep.otherValuePtr = srcPtr->internalRep.otherValuePtr;
+    copyPtr->internalRep.twoPtrValue.ptr1 = srcPtr->internalRep.twoPtrValue.ptr1;
     copyPtr->typePtr = &tclRegexpType;
 }
 
@@ -794,9 +809,9 @@ DupRegexpInternalRep(srcPtr, copyPtr)
  */
 
 static int
-SetRegexpFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    Tcl_Obj *objPtr;		/* The object to convert. */
+SetRegexpFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    Tcl_Obj *objPtr)		/* The object to convert. */
 {
     if (Tcl_GetRegExpFromObj(interp, objPtr, REG_ADVANCED) == NULL) {
 	return TCL_ERROR;
@@ -809,37 +824,36 @@ SetRegexpFromAny(interp, objPtr)
  *
  * CompileRegexp --
  *
- *	Attempt to compile the given regexp pattern.  If the compiled
- *	regular expression can be found in the per-thread cache, it
- *	will be used instead of compiling a new copy.
+ *	Attempt to compile the given regexp pattern. If the compiled regular
+ *	expression can be found in the per-thread cache, it will be used
+ *	instead of compiling a new copy.
  *
  * Results:
- *	The return value is a pointer to a newly allocated TclRegexp
- *	that represents the compiled pattern, or NULL if the pattern
- *	could not be compiled.  If NULL is returned, an error message is
- *	left in the interp's result.
+ *	The return value is a pointer to a newly allocated TclRegexp that
+ *	represents the compiled pattern, or NULL if the pattern could not be
+ *	compiled. If NULL is returned, an error message is left in the
+ *	interp's result.
  *
  * Side effects:
- *	The thread-local regexp cache is updated and a new TclRegexp may
- *	be allocated.
+ *	The thread-local regexp cache is updated and a new TclRegexp may be
+ *	allocated.
  *
  *----------------------------------------------------------------------
  */
 
 static TclRegexp *
-CompileRegexp(interp, string, length, flags)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    CONST char *string;		/* The regexp to compile (UTF-8). */
-    int length;			/* The length of the string in bytes. */
-    int flags;			/* Compilation flags. */
+CompileRegexp(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    const char *string,		/* The regexp to compile (UTF-8). */
+    int length,			/* The length of the string in bytes. */
+    int flags)			/* Compilation flags. */
 {
     TclRegexp *regexpPtr;
-    CONST Tcl_UniChar *uniString;
-    int numChars;
+    const Tcl_UniChar *uniString;
+    int numChars, status, i, exact;
     Tcl_DString stringBuf;
-    int status, i;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
- 
+
     if (!tsdPtr->initialized) {
 	tsdPtr->initialized = 1;
 	Tcl_CreateThreadExitHandler(FinalizeRegexp, NULL);
@@ -847,14 +861,14 @@ CompileRegexp(interp, string, length, flags)
 
     /*
      * This routine maintains a second-level regular expression cache in
-     * addition to the per-object regexp cache.  The per-thread cache is needed
+     * addition to the per-object regexp cache. The per-thread cache is needed
      * to handle the case where for various reasons the object is lost between
      * invocations of the regexp command, but the literal pattern is the same.
      */
 
     /*
-     * Check the per-thread compiled regexp cache.  We can only reuse
-     * a regexp if it has the same pattern and the same flags.
+     * Check the per-thread compiled regexp cache. We can only reuse a regexp
+     * if it has the same pattern and the same flags.
      */
 
     for (i = 0; (i < NUM_REGEXPS) && (tsdPtr->patterns[i] != NULL); i++) {
@@ -862,8 +876,8 @@ CompileRegexp(interp, string, length, flags)
 		&& (tsdPtr->regexps[i]->flags == flags)
 		&& (strcmp(string, tsdPtr->patterns[i]) == 0)) {
 	    /*
-	     * Move the matched pattern to the first slot in the
-	     * cache and shift the other patterns down one position.
+	     * Move the matched pattern to the first slot in the cache and
+	     * shift the other patterns down one position.
 	     */
 
 	    if (i != 0) {
@@ -888,7 +902,7 @@ CompileRegexp(interp, string, length, flags)
     /*
      * This is a new expression, so compile it and add it to the cache.
      */
-    
+
     regexpPtr = (TclRegexp *) ckalloc(sizeof(TclRegexp));
     regexpPtr->objPtr = NULL;
     regexpPtr->string = NULL;
@@ -919,15 +933,29 @@ CompileRegexp(interp, string, length, flags)
 	ckfree((char *)regexpPtr);
 	if (interp) {
 	    TclRegError(interp,
-		    "couldn't compile regular expression pattern: ",
-		    status);
+		    "couldn't compile regular expression pattern: ", status);
 	}
 	return NULL;
     }
 
     /*
-     * Allocate enough space for all of the subexpressions, plus one
-     * extra for the entire pattern.
+     * Convert RE to a glob pattern equivalent, if any, and cache it.  If this
+     * is not possible, then globObjPtr will be NULL.  This is used by
+     * Tcl_RegExpExecObj to optionally do a fast match (avoids RE engine).
+     */
+
+    if (TclReToGlob(NULL, string, length, &stringBuf, &exact) == TCL_OK) {
+	regexpPtr->globObjPtr = Tcl_NewStringObj(Tcl_DStringValue(&stringBuf),
+		Tcl_DStringLength(&stringBuf));
+	Tcl_IncrRefCount(regexpPtr->globObjPtr);
+	Tcl_DStringFree(&stringBuf);
+    } else {
+	regexpPtr->globObjPtr = NULL;
+    }
+
+    /*
+     * Allocate enough space for all of the subexpressions, plus one extra for
+     * the entire pattern.
      */
 
     regexpPtr->matches = (regmatch_t *) ckalloc(
@@ -981,10 +1009,13 @@ CompileRegexp(interp, string, length, flags)
  */
 
 static void
-FreeRegexp(regexpPtr)
-    TclRegexp *regexpPtr;	/* Compiled regular expression to free. */
+FreeRegexp(
+    TclRegexp *regexpPtr)	/* Compiled regular expression to free. */
 {
     TclReFree(&regexpPtr->re);
+    if (regexpPtr->globObjPtr) {
+	TclDecrRefCount(regexpPtr->globObjPtr);
+    }
     if (regexpPtr->matches) {
 	ckfree((char *) regexpPtr->matches);
     }
@@ -996,8 +1027,7 @@ FreeRegexp(regexpPtr)
  *
  * FinalizeRegexp --
  *
- *	Release the storage associated with the per-thread regexp
- *	cache.
+ *	Release the storage associated with the per-thread regexp cache.
  *
  * Results:
  *	None.
@@ -1009,8 +1039,8 @@ FreeRegexp(regexpPtr)
  */
 
 static void
-FinalizeRegexp(clientData)
-    ClientData clientData;	/* Not used. */
+FinalizeRegexp(
+    ClientData clientData)	/* Not used. */
 {
     int i;
     TclRegexp *regexpPtr;
@@ -1030,3 +1060,11 @@ FinalizeRegexp(clientData)
      */
     tsdPtr->initialized = 0;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclRegexp.h b/generic/tclRegexp.h
index f4c4cb6..8650776 100644
--- a/generic/tclRegexp.h
+++ b/generic/tclRegexp.h
@@ -1,14 +1,14 @@
-/* 
+/*
  * tclRegexp.h --
  *
- * 	This file contains definitions used internally by Henry
- *	Spencer's regular expression code.
+ *	This file contains definitions used internally by Henry Spencer's
+ *	regular expression code.
  *
  * Copyright (c) 1998 by Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #ifndef _TCLREGEXP
@@ -16,18 +16,12 @@
 
 #include "regex.h"
 
-#ifdef BUILD_tcl
-# undef TCL_STORAGE_CLASS
-# define TCL_STORAGE_CLASS DLLEXPORT
-#endif
-
 /*
- * The TclRegexp structure encapsulates a compiled regex_t,
- * the flags that were used to compile it, and an array of pointers
- * that are used to indicate subexpressions after a call to Tcl_RegExpExec.
- * Note that the string and objPtr are mutually exclusive.  These values
- * are needed by Tcl_RegExpRange in order to return pointers into the
- * original string.
+ * The TclRegexp structure encapsulates a compiled regex_t, the flags that
+ * were used to compile it, and an array of pointers that are used to indicate
+ * subexpressions after a call to Tcl_RegExpExec. Note that the string and
+ * objPtr are mutually exclusive. These values are needed by Tcl_RegExpRange
+ * in order to return pointers into the original string.
  */
 
 typedef struct TclRegexp {
@@ -36,6 +30,7 @@ typedef struct TclRegexp {
 				 * subexpressions. */
     CONST char *string;		/* Last string passed to Tcl_RegExpExec. */
     Tcl_Obj *objPtr;		/* Last object passed to Tcl_RegExpExecObj. */
+    Tcl_Obj *globObjPtr;	/* Glob pattern rep of RE or NULL if none. */
     regmatch_t *matches;	/* Array of indices into the Tcl_UniChar
 				 * representation of the last string matched
 				 * with this regexp to indicate the location
@@ -47,3 +42,11 @@ typedef struct TclRegexp {
 } TclRegexp;
 
 #endif /* _TCLREGEXP */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclResolve.c b/generic/tclResolve.c
index 4463436..8bb5e2b 100644
--- a/generic/tclResolve.c
+++ b/generic/tclResolve.c
@@ -1,111 +1,107 @@
 /*
  * tclResolve.c --
  *
- *      Contains hooks for customized command/variable name resolution
- *      schemes.  These hooks allow extensions like [incr Tcl] to add
- *      their own name resolution rules to the Tcl language.  Rules can
- *      be applied to a particular namespace, to the interpreter as a
- *      whole, or both.
+ *	Contains hooks for customized command/variable name resolution
+ *	schemes. These hooks allow extensions like [incr Tcl] to add their own
+ *	name resolution rules to the Tcl language. Rules can be applied to a
+ *	particular namespace, to the interpreter as a whole, or both.
  *
  * Copyright (c) 1998 Lucent Technologies, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * Declarations for procedures local to this file:
+ * Declarations for functions local to this file:
  */
 
-static void		BumpCmdRefEpochs _ANSI_ARGS_((Namespace *nsPtr));
-
+static void		BumpCmdRefEpochs(Namespace *nsPtr);
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_AddInterpResolvers --
  *
- *	Adds a set of command/variable resolution procedures to an
- *	interpreter.  These procedures are consulted when commands
- *	are resolved in Tcl_FindCommand, and when variables are
- *	resolved in TclLookupVar and LookupCompiledLocal.  Each
- *	namespace may also have its own set of resolution procedures
- *	which take precedence over those for the interpreter.
+ *	Adds a set of command/variable resolution functions to an interpreter.
+ *	These functions are consulted when commands are resolved in
+ *	Tcl_FindCommand, and when variables are resolved in TclLookupVar and
+ *	LookupCompiledLocal. Each namespace may also have its own set of
+ *	resolution functions which take precedence over those for the
+ *	interpreter.
  *
- *	When a name is resolved, it is handled as follows.  First,
- *	the name is passed to the resolution procedures for the
- *	namespace.  If not resolved, the name is passed to each of
- *	the resolution procedures added to the interpreter.  Finally,
- *	if still not resolved, the name is handled using the default
- *	Tcl rules for name resolution.
+ *	When a name is resolved, it is handled as follows. First, the name is
+ *	passed to the resolution functions for the namespace. If not resolved,
+ *	the name is passed to each of the resolution functions added to the
+ *	interpreter. Finally, if still not resolved, the name is handled using
+ *	the default Tcl rules for name resolution.
  *
  * Results:
- *	Returns pointers to the current name resolution procedures
- *	in the cmdProcPtr, varProcPtr and compiledVarProcPtr
- *	arguments.
+ *	Returns pointers to the current name resolution functions in the
+ *	cmdProcPtr, varProcPtr and compiledVarProcPtr arguments.
  *
  * Side effects:
- *	If a compiledVarProc is specified, this procedure bumps the
- *	compileEpoch for the interpreter, forcing all code to be
- *	recompiled.  If a cmdProc is specified, this procedure bumps
- *	the cmdRefEpoch in all namespaces, forcing commands to be
- *	resolved again using the new rules.
+ *	If a compiledVarProc is specified, this function bumps the
+ *	compileEpoch for the interpreter, forcing all code to be recompiled.
+ *	If a cmdProc is specified, this function bumps the cmdRefEpoch in all
+ *	namespaces, forcing commands to be resolved again using the new rules.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AddInterpResolvers(interp, name, cmdProc, varProc, compiledVarProc)
-
-    Tcl_Interp *interp;			/* Interpreter whose name resolution
-					 * rules are being modified. */
-    CONST char *name;			/* Name of this resolution scheme. */
-    Tcl_ResolveCmdProc *cmdProc;	/* New procedure for command
-					 * resolution */
-    Tcl_ResolveVarProc *varProc;	/* Procedure for variable resolution
-					 * at runtime */
-    Tcl_ResolveCompiledVarProc *compiledVarProc;
-					/* Procedure for variable resolution
-					 * at compile time. */
+Tcl_AddInterpResolvers(
+    Tcl_Interp *interp,		/* Interpreter whose name resolution rules are
+				 * being modified. */
+    CONST char *name,		/* Name of this resolution scheme. */
+    Tcl_ResolveCmdProc *cmdProc,/* New function for command resolution. */
+    Tcl_ResolveVarProc *varProc,/* Function for variable resolution at
+				 * runtime. */
+    Tcl_ResolveCompiledVarProc *compiledVarProc)
+				/* Function for variable resolution at compile
+				 * time. */
 {
-    Interp *iPtr = (Interp*)interp;
+    Interp *iPtr = (Interp *) interp;
     ResolverScheme *resPtr;
 
     /*
-     *  Since we're adding a new name resolution scheme, we must force
-     *  all code to be recompiled to use the new scheme.  If there
-     *  are new compiled variable resolution rules, bump the compiler
-     *  epoch to invalidate compiled code.  If there are new command
-     *  resolution rules, bump the cmdRefEpoch in all namespaces.
+     * Since we're adding a new name resolution scheme, we must force all code
+     * to be recompiled to use the new scheme. If there are new compiled
+     * variable resolution rules, bump the compiler epoch to invalidate
+     * compiled code. If there are new command resolution rules, bump the
+     * cmdRefEpoch in all namespaces.
      */
+
     if (compiledVarProc) {
-        iPtr->compileEpoch++;
+	iPtr->compileEpoch++;
     }
     if (cmdProc) {
-        BumpCmdRefEpochs(iPtr->globalNsPtr);
+	BumpCmdRefEpochs(iPtr->globalNsPtr);
     }
 
     /*
-     *  Look for an existing scheme with the given name.  If found,
-     *  then replace its rules.
+     * Look for an existing scheme with the given name. If found, then replace
+     * its rules.
      */
-    for (resPtr = iPtr->resolverPtr; resPtr != NULL; resPtr = resPtr->nextPtr) {
-        if (*name == *resPtr->name && strcmp(name, resPtr->name) == 0) {
-            resPtr->cmdResProc = cmdProc;
-            resPtr->varResProc = varProc;
-            resPtr->compiledVarResProc = compiledVarProc;
-            return;
-        }
+
+    for (resPtr=iPtr->resolverPtr ; resPtr!=NULL ; resPtr=resPtr->nextPtr) {
+	if (*name == *resPtr->name && strcmp(name, resPtr->name) == 0) {
+	    resPtr->cmdResProc = cmdProc;
+	    resPtr->varResProc = varProc;
+	    resPtr->compiledVarResProc = compiledVarProc;
+	    return;
+	}
     }
 
     /*
-     *  Otherwise, this is a new scheme.  Add it to the FRONT
-     *  of the linked list, so that it overrides existing schemes.
+     * Otherwise, this is a new scheme. Add it to the FRONT of the linked
+     * list, so that it overrides existing schemes.
      */
+
     resPtr = (ResolverScheme *) ckalloc(sizeof(ResolverScheme));
-    resPtr->name = (char*)ckalloc((unsigned)(strlen(name)+1));
+    resPtr->name = (char *) ckalloc((unsigned)(strlen(name) + 1));
     strcpy(resPtr->name, name);
     resPtr->cmdResProc = cmdProc;
     resPtr->varResProc = varProc;
@@ -119,15 +115,14 @@ Tcl_AddInterpResolvers(interp, name, cmdProc, varProc, compiledVarProc)
  *
  * Tcl_GetInterpResolvers --
  *
- *	Looks for a set of command/variable resolution procedures with
- *	the given name in an interpreter.  These procedures are
- *	registered by calling Tcl_AddInterpResolvers.
+ *	Looks for a set of command/variable resolution functions with the
+ *	given name in an interpreter. These functions are registered by
+ *	calling Tcl_AddInterpResolvers.
  *
  * Results:
- *	If the name is recognized, this procedure returns non-zero,
- *	along with pointers to the name resolution procedures in
- *	the Tcl_ResolverInfo structure.  If the name is not recognized,
- *	this procedure returns zero.
+ *	If the name is recognized, this function returns non-zero, along with
+ *	pointers to the name resolution functions in the Tcl_ResolverInfo
+ *	structure. If the name is not recognized, this function returns zero.
  *
  * Side effects:
  *	None.
@@ -136,28 +131,29 @@ Tcl_AddInterpResolvers(interp, name, cmdProc, varProc, compiledVarProc)
  */
 
 int
-Tcl_GetInterpResolvers(interp, name, resInfoPtr)
-
-    Tcl_Interp *interp;			/* Interpreter whose name resolution
-					 * rules are being queried. */
-    CONST char *name;                   /* Look for a scheme with this name. */
-    Tcl_ResolverInfo *resInfoPtr;	/* Returns pointers to the procedures,
-					 * if found */
+Tcl_GetInterpResolvers(
+    Tcl_Interp *interp,		/* Interpreter whose name resolution rules are
+				 * being queried. */
+    CONST char *name,		/* Look for a scheme with this name. */
+    Tcl_ResolverInfo *resInfoPtr)
+				/* Returns pointers to the functions, if
+				 * found */
 {
-    Interp *iPtr = (Interp*)interp;
+    Interp *iPtr = (Interp *) interp;
     ResolverScheme *resPtr;
 
     /*
-     *  Look for an existing scheme with the given name.  If found,
-     *  then return pointers to its procedures.
+     * Look for an existing scheme with the given name. If found, then return
+     * pointers to its functions.
      */
-    for (resPtr = iPtr->resolverPtr; resPtr != NULL; resPtr = resPtr->nextPtr) {
-        if (*name == *resPtr->name && strcmp(name, resPtr->name) == 0) {
+
+    for (resPtr=iPtr->resolverPtr ; resPtr!=NULL ; resPtr=resPtr->nextPtr) {
+	if (*name == *resPtr->name && strcmp(name, resPtr->name) == 0) {
 	    resInfoPtr->cmdResProc = resPtr->cmdResProc;
 	    resInfoPtr->varResProc = resPtr->varResProc;
 	    resInfoPtr->compiledVarResProc = resPtr->compiledVarResProc;
-            return 1;
-        }
+	    return 1;
+	}
     }
 
     return 0;
@@ -168,68 +164,69 @@ Tcl_GetInterpResolvers(interp, name, resInfoPtr)
  *
  * Tcl_RemoveInterpResolvers --
  *
- *	Removes a set of command/variable resolution procedures
- *	previously added by Tcl_AddInterpResolvers.  The next time
- *	a command/variable name is resolved, these procedures
- *	won't be consulted.
+ *	Removes a set of command/variable resolution functions previously
+ *	added by Tcl_AddInterpResolvers. The next time a command/variable name
+ *	is resolved, these functions won't be consulted.
  *
  * Results:
- *	Returns non-zero if the name was recognized and the
- *	resolution scheme was deleted.  Returns zero otherwise.
+ *	Returns non-zero if the name was recognized and the resolution scheme
+ *	was deleted. Returns zero otherwise.
  *
  * Side effects:
- *	If a scheme with a compiledVarProc was deleted, this procedure
- *	bumps the compileEpoch for the interpreter, forcing all code
- *	to be recompiled.  If a scheme with a cmdProc was deleted,
- *	this procedure bumps the cmdRefEpoch in all namespaces,
- *	forcing commands to be resolved again using the new rules.
+ *	If a scheme with a compiledVarProc was deleted, this function bumps
+ *	the compileEpoch for the interpreter, forcing all code to be
+ *	recompiled. If a scheme with a cmdProc was deleted, this function
+ *	bumps the cmdRefEpoch in all namespaces, forcing commands to be
+ *	resolved again using the new rules.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_RemoveInterpResolvers(interp, name)
-
-    Tcl_Interp *interp;			/* Interpreter whose name resolution
-					 * rules are being modified. */
-    CONST char *name;                   /* Name of the scheme to be removed. */
+Tcl_RemoveInterpResolvers(
+    Tcl_Interp *interp,		/* Interpreter whose name resolution rules are
+				 * being modified. */
+    CONST char *name)		/* Name of the scheme to be removed. */
 {
-    Interp *iPtr = (Interp*)interp;
+    Interp *iPtr = (Interp *) interp;
     ResolverScheme **prevPtrPtr, *resPtr;
 
     /*
-     *  Look for an existing scheme with the given name.
+     * Look for an existing scheme with the given name.
      */
+
     prevPtrPtr = &iPtr->resolverPtr;
-    for (resPtr = iPtr->resolverPtr; resPtr != NULL; resPtr = resPtr->nextPtr) {
-        if (*name == *resPtr->name && strcmp(name, resPtr->name) == 0) {
-            break;
-        }
-        prevPtrPtr = &resPtr->nextPtr;
+    for (resPtr=iPtr->resolverPtr ; resPtr!=NULL ; resPtr=resPtr->nextPtr) {
+	if (*name == *resPtr->name && strcmp(name, resPtr->name) == 0) {
+	    break;
+	}
+	prevPtrPtr = &resPtr->nextPtr;
     }
 
     /*
-     *  If we found the scheme, delete it.
+     * If we found the scheme, delete it.
      */
+
     if (resPtr) {
-        /*
-         *  If we're deleting a scheme with compiled variable resolution
-         *  rules, bump the compiler epoch to invalidate compiled code.
-         *  If we're deleting a scheme with command resolution rules,
-         *  bump the cmdRefEpoch in all namespaces.
-         */
-        if (resPtr->compiledVarResProc) {
-            iPtr->compileEpoch++;
-        }
-        if (resPtr->cmdResProc) {
-            BumpCmdRefEpochs(iPtr->globalNsPtr);
-        }
-
-        *prevPtrPtr = resPtr->nextPtr;
-        ckfree(resPtr->name);
-        ckfree((char *) resPtr);
-
-        return 1;
+	/*
+	 * If we're deleting a scheme with compiled variable resolution rules,
+	 * bump the compiler epoch to invalidate compiled code. If we're
+	 * deleting a scheme with command resolution rules, bump the
+	 * cmdRefEpoch in all namespaces.
+	 */
+
+	if (resPtr->compiledVarResProc) {
+	    iPtr->compileEpoch++;
+	}
+	if (resPtr->cmdResProc) {
+	    BumpCmdRefEpochs(iPtr->globalNsPtr);
+	}
+
+	*prevPtrPtr = resPtr->nextPtr;
+	ckfree(resPtr->name);
+	ckfree((char *) resPtr);
+
+	return 1;
     }
     return 0;
 }
@@ -239,134 +236,127 @@ Tcl_RemoveInterpResolvers(interp, name)
  *
  * BumpCmdRefEpochs --
  *
- *	This procedure is used to bump the cmdRefEpoch counters in
- *	the specified namespace and all of its child namespaces.
- *	It is used whenever name resolution schemes are added/removed
- *	from an interpreter, to invalidate all command references.
+ *	This function is used to bump the cmdRefEpoch counters in the
+ *	specified namespace and all of its child namespaces. It is used
+ *	whenever name resolution schemes are added/removed from an
+ *	interpreter, to invalidate all command references.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Bumps the cmdRefEpoch in the specified namespace and its
- *	children, recursively.
+ *	Bumps the cmdRefEpoch in the specified namespace and its children,
+ *	recursively.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-BumpCmdRefEpochs(nsPtr)
-    Namespace *nsPtr;			/* Namespace being modified. */
+BumpCmdRefEpochs(
+    Namespace *nsPtr)		/* Namespace being modified. */
 {
     Tcl_HashEntry *entry;
     Tcl_HashSearch search;
-    Namespace *childNsPtr;
 
     nsPtr->cmdRefEpoch++;
 
     for (entry = Tcl_FirstHashEntry(&nsPtr->childTable, &search);
-	    entry != NULL;
-	    entry = Tcl_NextHashEntry(&search)) {
-
-        childNsPtr = (Namespace *) Tcl_GetHashValue(entry);
-        BumpCmdRefEpochs(childNsPtr);
+	    entry != NULL; entry = Tcl_NextHashEntry(&search)) {
+	Namespace *childNsPtr = (Namespace *) Tcl_GetHashValue(entry);
+	BumpCmdRefEpochs(childNsPtr);
     }
+    TclInvalidateNsPath(nsPtr);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_SetNamespaceResolvers --
  *
- *	Sets the command/variable resolution procedures for a namespace,
- *	thereby changing the way that command/variable names are
- *	interpreted.  This allows extension writers to support different
- *	name resolution schemes, such as those for object-oriented
- *	packages.
- *
- *	Command resolution is handled by a procedure of the following
- *	type:
- *
- *	  typedef int (Tcl_ResolveCmdProc) _ANSI_ARGS_((
- *		Tcl_Interp* interp, CONST char* name, Tcl_Namespace *context,
- *              int flags, Tcl_Command *rPtr));
- *          
- *	Whenever a command is executed or Tcl_FindCommand is invoked
- *	within the namespace, this procedure is called to resolve the
- *	command name.  If this procedure is able to resolve the name,
- *	it should return the status code TCL_OK, along with the
- *	corresponding Tcl_Command in the rPtr argument.  Otherwise,
- *	the procedure can return TCL_CONTINUE, and the command will
- *	be treated under the usual name resolution rules.  Or, it can
- *	return TCL_ERROR, and the command will be considered invalid.
- *
- *	Variable resolution is handled by two procedures.  The first
- *	is called whenever a variable needs to be resolved at compile
- *	time:
- *
- *        typedef int (Tcl_ResolveCompiledVarProc) _ANSI_ARGS_((
- *	        Tcl_Interp* interp, CONST char* name, Tcl_Namespace *context,
- *	        Tcl_ResolvedVarInfo *rPtr));
- *
- *      If this procedure is able to resolve the name, it should return
- *      the status code TCL_OK, along with variable resolution info in
- *      the rPtr argument; this info will be used to set up compiled
- *	locals in the call frame at runtime.  The procedure may also
- *	return TCL_CONTINUE, and the variable will be treated under
- *	the usual name resolution rules.  Or, it can return TCL_ERROR,
- *	and the variable will be considered invalid.
- *
- *	Another procedure is used whenever a variable needs to be
- *	resolved at runtime but it is not recognized as a compiled local.
- *	(For example, the variable may be requested via
- *	Tcl_FindNamespaceVar.) This procedure has the following type:
- *
- *	  typedef int (Tcl_ResolveVarProc) _ANSI_ARGS_((
- *	        Tcl_Interp* interp, CONST char* name, Tcl_Namespace *context,
- *	        int flags, Tcl_Var *rPtr));
- *
- *	This procedure is quite similar to the compile-time version.
- *	It returns the same status codes, but if variable resolution
- *	succeeds, this procedure returns a Tcl_Var directly via the
- *	rPtr argument.
+ *	Sets the command/variable resolution functions for a namespace,
+ *	thereby changing the way that command/variable names are interpreted.
+ *	This allows extension writers to support different name resolution
+ *	schemes, such as those for object-oriented packages.
+ *
+ *	Command resolution is handled by a function of the following type:
+ *
+ *	  typedef int (*Tcl_ResolveCmdProc)(Tcl_Interp *interp,
+ *		  CONST char *name, Tcl_Namespace *context,
+ *		  int flags, Tcl_Command *rPtr);
+ *
+ *	Whenever a command is executed or Tcl_FindCommand is invoked within
+ *	the namespace, this function is called to resolve the command name. If
+ *	this function is able to resolve the name, it should return the status
+ *	code TCL_OK, along with the corresponding Tcl_Command in the rPtr
+ *	argument. Otherwise, the function can return TCL_CONTINUE, and the
+ *	command will be treated under the usual name resolution rules. Or, it
+ *	can return TCL_ERROR, and the command will be considered invalid.
+ *
+ *	Variable resolution is handled by two functions. The first is called
+ *	whenever a variable needs to be resolved at compile time:
+ *
+ *	  typedef int (*Tcl_ResolveCompiledVarProc)(Tcl_Interp *interp,
+ *		  CONST char *name, Tcl_Namespace *context,
+ *		  Tcl_ResolvedVarInfo *rPtr);
+ *
+ *	If this function is able to resolve the name, it should return the
+ *	status code TCL_OK, along with variable resolution info in the rPtr
+ *	argument; this info will be used to set up compiled locals in the call
+ *	frame at runtime. The function may also return TCL_CONTINUE, and the
+ *	variable will be treated under the usual name resolution rules. Or, it
+ *	can return TCL_ERROR, and the variable will be considered invalid.
+ *
+ *	Another function is used whenever a variable needs to be resolved at
+ *	runtime but it is not recognized as a compiled local. (For example,
+ *	the variable may be requested via Tcl_FindNamespaceVar.) This function
+ *	has the following type:
+ *
+ *	  typedef int (*Tcl_ResolveVarProc)(Tcl_Interp *interp,
+ *		  CONST char *name, Tcl_Namespace *context,
+ *		  int flags, Tcl_Var *rPtr);
+ *
+ *	This function is quite similar to the compile-time version. It returns
+ *	the same status codes, but if variable resolution succeeds, this
+ *	function returns a Tcl_Var directly via the rPtr argument.
  *
  * Results:
  *	Nothing.
  *
  * Side effects:
- *	Bumps the command epoch counter for the namespace, invalidating
- *	all command references in that namespace.  Also bumps the
- *	resolver epoch counter for the namespace, forcing all code
- *	in the namespace to be recompiled.
+ *	Bumps the command epoch counter for the namespace, invalidating all
+ *	command references in that namespace. Also bumps the resolver epoch
+ *	counter for the namespace, forcing all code in the namespace to be
+ *	recompiled.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetNamespaceResolvers(namespacePtr, cmdProc, varProc, compiledVarProc)
-    Tcl_Namespace *namespacePtr;	/* Namespace whose resolution rules
-					 * are being modified. */
-    Tcl_ResolveCmdProc *cmdProc;	/* Procedure for command resolution */
-    Tcl_ResolveVarProc *varProc;	/* Procedure for variable resolution
-					 * at runtime */
-    Tcl_ResolveCompiledVarProc *compiledVarProc;
-					/* Procedure for variable resolution
-					 * at compile time. */
+Tcl_SetNamespaceResolvers(
+    Tcl_Namespace *namespacePtr,/* Namespace whose resolution rules are being
+				 * modified. */
+    Tcl_ResolveCmdProc *cmdProc,/* Function for command resolution */
+    Tcl_ResolveVarProc *varProc,/* Function for variable resolution at
+				 * run-time */
+    Tcl_ResolveCompiledVarProc *compiledVarProc)
+				/* Function for variable resolution at compile
+				 * time. */
 {
-    Namespace *nsPtr = (Namespace*)namespacePtr;
+    Namespace *nsPtr = (Namespace *) namespacePtr;
 
     /*
-     *  Plug in the new command resolver, and bump the epoch counters
-     *  so that all code will have to be recompiled and all commands
-     *  will have to be resolved again using the new policy.
+     * Plug in the new command resolver, and bump the epoch counters so that
+     * all code will have to be recompiled and all commands will have to be
+     * resolved again using the new policy.
      */
+
     nsPtr->cmdResProc = cmdProc;
     nsPtr->varResProc = varProc;
     nsPtr->compiledVarResProc = compiledVarProc;
 
     nsPtr->cmdRefEpoch++;
     nsPtr->resolverEpoch++;
+    TclInvalidateNsPath(nsPtr);
 }
 
 /*
@@ -374,17 +364,15 @@ Tcl_SetNamespaceResolvers(namespacePtr, cmdProc, varProc, compiledVarProc)
  *
  * Tcl_GetNamespaceResolvers --
  *
- *	Returns the current command/variable resolution procedures
- *	for a namespace.  By default, these procedures are NULL.
- *	New procedures can be installed by calling
- *	Tcl_SetNamespaceResolvers, to provide new name resolution
- *	rules.
+ *	Returns the current command/variable resolution functions for a
+ *	namespace. By default, these functions are NULL. New functions can be
+ *	installed by calling Tcl_SetNamespaceResolvers, to provide new name
+ *	resolution rules.
  *
  * Results:
- *	Returns non-zero if any name resolution procedures have been
- *	assigned to this namespace; also returns pointers to the
- *	procedures in the Tcl_ResolverInfo structure.  Returns zero
- *	otherwise.
+ *	Returns non-zero if any name resolution functions have been assigned
+ *	to this namespace; also returns pointers to the functions in the
+ *	Tcl_ResolverInfo structure. Returns zero otherwise.
  *
  * Side effects:
  *	None.
@@ -393,24 +381,30 @@ Tcl_SetNamespaceResolvers(namespacePtr, cmdProc, varProc, compiledVarProc)
  */
 
 int
-Tcl_GetNamespaceResolvers(namespacePtr, resInfoPtr)
-
-    Tcl_Namespace *namespacePtr;	/* Namespace whose resolution rules
-					 * are being modified. */
-    Tcl_ResolverInfo *resInfoPtr;	/* Returns: pointers for all
-					 * name resolution procedures
-					 * assigned to this namespace. */
+Tcl_GetNamespaceResolvers(
+    Tcl_Namespace *namespacePtr,/* Namespace whose resolution rules are being
+				 * modified. */
+    Tcl_ResolverInfo *resInfoPtr)
+				/* Returns: pointers for all name resolution
+				 * functions assigned to this namespace. */
 {
-    Namespace *nsPtr = (Namespace*)namespacePtr;
+    Namespace *nsPtr = (Namespace *) namespacePtr;
 
     resInfoPtr->cmdResProc = nsPtr->cmdResProc;
     resInfoPtr->varResProc = nsPtr->varResProc;
     resInfoPtr->compiledVarResProc = nsPtr->compiledVarResProc;
 
-    if (nsPtr->cmdResProc != NULL ||
-        nsPtr->varResProc != NULL ||
-        nsPtr->compiledVarResProc != NULL) {
+    if (nsPtr->cmdResProc != NULL || nsPtr->varResProc != NULL ||
+	    nsPtr->compiledVarResProc != NULL) {
 	return 1;
     }
     return 0;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclResult.c b/generic/tclResult.c
index 6dbdd90..7b58d44 100644
--- a/generic/tclResult.c
+++ b/generic/tclResult.c
@@ -1,39 +1,207 @@
-/* 
+/*
  * tclResult.c --
  *
  *	This file contains code to manage the interpreter result.
  *
  * Copyright (c) 1997 by Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * Function prototypes for local procedures in this file:
+ * Indices of the standard return options dictionary keys.
+ */
+
+enum returnKeys {
+    KEY_CODE,	KEY_ERRORCODE,	KEY_ERRORINFO,	KEY_ERRORLINE,
+    KEY_LEVEL,	KEY_OPTIONS,	KEY_LAST
+};
+
+/*
+ * Function prototypes for local functions in this file:
  */
 
-static void             ResetObjResult _ANSI_ARGS_((Interp *iPtr));
-static void		SetupAppendBuffer _ANSI_ARGS_((Interp *iPtr,
-			    int newSpace));
+static Tcl_Obj **	GetKeys(void);
+static void		ReleaseKeys(ClientData clientData);
+static void		ResetObjResult(Interp *iPtr);
+static void		SetupAppendBuffer(Interp *iPtr, int newSpace);
 
+/*
+ * This structure is used to take a snapshot of the interpreter state in
+ * Tcl_SaveInterpState. You can snapshot the state, execute a command, and
+ * then back up to the result or the error that was previously in progress.
+ */
+
+typedef struct InterpState {
+    int status;			/* return code status */
+    int flags;			/* Each remaining field saves the */
+    int returnLevel;		/* corresponding field of the Interp */
+    int returnCode;		/* struct. These fields taken together are */
+    Tcl_Obj *errorInfo;		/* the "state" of the interp. */
+    Tcl_Obj *errorCode;
+    Tcl_Obj *returnOpts;
+    Tcl_Obj *objResult;
+} InterpState;
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_SaveInterpState --
+ *
+ *	Fills a token with a snapshot of the current state of the interpreter.
+ *	The snapshot can be restored at any point by TclRestoreInterpState.
+ *
+ *	The token returned must be eventally passed to one of the routines
+ *	TclRestoreInterpState or TclDiscardInterpState, or there will be a
+ *	memory leak.
+ *
+ * Results:
+ *	Returns a token representing the interp state.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_InterpState
+Tcl_SaveInterpState(
+    Tcl_Interp *interp,		/* Interpreter's state to be saved */
+    int status)			/* status code for current operation */
+{
+    Interp *iPtr = (Interp *)interp;
+    InterpState *statePtr = (InterpState *)ckalloc(sizeof(InterpState));
+
+    statePtr->status = status;
+    statePtr->flags = iPtr->flags & ERR_ALREADY_LOGGED;
+    statePtr->returnLevel = iPtr->returnLevel;
+    statePtr->returnCode = iPtr->returnCode;
+    statePtr->errorInfo = iPtr->errorInfo;
+    if (statePtr->errorInfo) {
+	Tcl_IncrRefCount(statePtr->errorInfo);
+    }
+    statePtr->errorCode = iPtr->errorCode;
+    if (statePtr->errorCode) {
+	Tcl_IncrRefCount(statePtr->errorCode);
+    }
+    statePtr->returnOpts = iPtr->returnOpts;
+    if (statePtr->returnOpts) {
+	Tcl_IncrRefCount(statePtr->returnOpts);
+    }
+    statePtr->objResult = Tcl_GetObjResult(interp);
+    Tcl_IncrRefCount(statePtr->objResult);
+    return (Tcl_InterpState) statePtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_RestoreInterpState --
+ *
+ *	Accepts an interp and a token previously returned by
+ *	Tcl_SaveInterpState. Restore the state of the interp to what it was at
+ *	the time of the Tcl_SaveInterpState call.
+ *
+ * Results:
+ *	Returns the status value originally passed in to Tcl_SaveInterpState.
+ *
+ * Side effects:
+ *	Restores the interp state and frees memory held by token.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_RestoreInterpState(
+    Tcl_Interp *interp,		/* Interpreter's state to be restored. */
+    Tcl_InterpState state)	/* Saved interpreter state. */
+{
+    Interp *iPtr = (Interp *)interp;
+    InterpState *statePtr = (InterpState *)state;
+    int status = statePtr->status;
+
+    iPtr->flags &= ~ERR_ALREADY_LOGGED;
+    iPtr->flags |= (statePtr->flags & ERR_ALREADY_LOGGED);
+
+    iPtr->returnLevel = statePtr->returnLevel;
+    iPtr->returnCode = statePtr->returnCode;
+    if (iPtr->errorInfo) {
+	Tcl_DecrRefCount(iPtr->errorInfo);
+    }
+    iPtr->errorInfo = statePtr->errorInfo;
+    if (iPtr->errorInfo) {
+	Tcl_IncrRefCount(iPtr->errorInfo);
+    }
+    if (iPtr->errorCode) {
+	Tcl_DecrRefCount(iPtr->errorCode);
+    }
+    iPtr->errorCode = statePtr->errorCode;
+    if (iPtr->errorCode) {
+	Tcl_IncrRefCount(iPtr->errorCode);
+    }
+    if (iPtr->returnOpts) {
+	Tcl_DecrRefCount(iPtr->returnOpts);
+    }
+    iPtr->returnOpts = statePtr->returnOpts;
+    if (iPtr->returnOpts) {
+	Tcl_IncrRefCount(iPtr->returnOpts);
+    }
+    Tcl_SetObjResult(interp, statePtr->objResult);
+    Tcl_DiscardInterpState(state);
+    return status;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DiscardInterpState --
+ *
+ *	Accepts a token previously returned by Tcl_SaveInterpState. Frees the
+ *	memory it uses.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Frees memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_DiscardInterpState(
+    Tcl_InterpState state)	/* saved interpreter state */
+{
+    InterpState *statePtr = (InterpState *)state;
+
+    if (statePtr->errorInfo) {
+	Tcl_DecrRefCount(statePtr->errorInfo);
+    }
+    if (statePtr->errorCode) {
+	Tcl_DecrRefCount(statePtr->errorCode);
+    }
+    if (statePtr->returnOpts) {
+	Tcl_DecrRefCount(statePtr->returnOpts);
+    }
+    Tcl_DecrRefCount(statePtr->objResult);
+    ckfree((char *) statePtr);
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_SaveResult --
  *
- *      Takes a snapshot of the current result state of the interpreter.
- *      The snapshot can be restored at any point by
- *      Tcl_RestoreResult. Note that this routine does not 
- *	preserve the errorCode, errorInfo, or flags fields so it
- *	should not be used if an error is in progress.
+ *	Takes a snapshot of the current result state of the interpreter. The
+ *	snapshot can be restored at any point by Tcl_RestoreResult. Note that
+ *	this routine does not preserve the errorCode, errorInfo, or flags
+ *	fields so it should not be used if an error is in progress.
  *
- *      Once a snapshot is saved, it must be restored by calling
- *      Tcl_RestoreResult, or discarded by calling
- *      Tcl_DiscardResult.
+ *	Once a snapshot is saved, it must be restored by calling
+ *	Tcl_RestoreResult, or discarded by calling Tcl_DiscardResult.
  *
  * Results:
  *	None.
@@ -45,24 +213,24 @@ static void		SetupAppendBuffer _ANSI_ARGS_((Interp *iPtr,
  */
 
 void
-Tcl_SaveResult(interp, statePtr)
-    Tcl_Interp *interp;		/* Interpreter to save. */
-    Tcl_SavedResult *statePtr;	/* Pointer to state structure. */
+Tcl_SaveResult(
+    Tcl_Interp *interp,		/* Interpreter to save. */
+    Tcl_SavedResult *statePtr)	/* Pointer to state structure. */
 {
     Interp *iPtr = (Interp *) interp;
 
     /*
-     * Move the result object into the save state.  Note that we don't need
-     * to change its refcount because we're moving it, not adding a new
-     * reference.  Put an empty object into the interpreter.
+     * Move the result object into the save state. Note that we don't need to
+     * change its refcount because we're moving it, not adding a new
+     * reference. Put an empty object into the interpreter.
      */
 
     statePtr->objResultPtr = iPtr->objResultPtr;
-    iPtr->objResultPtr = Tcl_NewObj(); 
-    Tcl_IncrRefCount(iPtr->objResultPtr); 
+    iPtr->objResultPtr = Tcl_NewObj();
+    Tcl_IncrRefCount(iPtr->objResultPtr);
 
     /*
-     * Save the string result. 
+     * Save the string result.
      */
 
     statePtr->freeProc = iPtr->freeProc;
@@ -105,23 +273,23 @@ Tcl_SaveResult(interp, statePtr)
  *
  * Tcl_RestoreResult --
  *
- *      Restores the state of the interpreter to a snapshot taken
- *      by Tcl_SaveResult.  After this call, the token for
- *      the interpreter state is no longer valid.
+ *	Restores the state of the interpreter to a snapshot taken by
+ *	Tcl_SaveResult. After this call, the token for the interpreter state
+ *	is no longer valid.
  *
  * Results:
- *      None.
+ *	None.
  *
  * Side effects:
- *      Restores the interpreter result.
+ *	Restores the interpreter result.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_RestoreResult(interp, statePtr)
-    Tcl_Interp* interp;		/* Interpreter being restored. */
-    Tcl_SavedResult *statePtr;	/* State returned by Tcl_SaveResult. */
+Tcl_RestoreResult(
+    Tcl_Interp *interp,		/* Interpreter being restored. */
+    Tcl_SavedResult *statePtr)	/* State returned by Tcl_SaveResult. */
 {
     Interp *iPtr = (Interp *) interp;
 
@@ -145,7 +313,7 @@ Tcl_RestoreResult(interp, statePtr)
 	 */
 
 	if (iPtr->appendResult != NULL) {
-	    ckfree((char *)iPtr->appendResult);
+	    ckfree((char *) iPtr->appendResult);
 	}
 
 	iPtr->appendResult = statePtr->appendResult;
@@ -173,23 +341,22 @@ Tcl_RestoreResult(interp, statePtr)
  *
  * Tcl_DiscardResult --
  *
- *      Frees the memory associated with an interpreter snapshot
- *      taken by Tcl_SaveResult.  If the snapshot is not
- *      restored, this procedure must be called to discard it,
- *      or the memory will be lost.
+ *	Frees the memory associated with an interpreter snapshot taken by
+ *	Tcl_SaveResult. If the snapshot is not restored, this function must be
+ *	called to discard it, or the memory will be lost.
  *
  * Results:
- *      None.
+ *	None.
  *
  * Side effects:
- *      None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DiscardResult(statePtr)
-    Tcl_SavedResult *statePtr;	/* State returned by Tcl_SaveResult. */
+Tcl_DiscardResult(
+    Tcl_SavedResult *statePtr)	/* State returned by Tcl_SaveResult. */
 {
     TclDecrRefCount(statePtr->objResultPtr);
 
@@ -209,39 +376,39 @@ Tcl_DiscardResult(statePtr)
  *
  * Tcl_SetResult --
  *
- *	Arrange for "string" to be the Tcl return value.
+ *	Arrange for "result" to be the Tcl return value.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	interp->result is left pointing either to "string" (if "copy" is 0)
- *	or to a copy of string. Also, the object result is reset.
+ *	interp->result is left pointing either to "result" or to a copy of it.
+ *	Also, the object result is reset.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetResult(interp, string, freeProc)
-    Tcl_Interp *interp;		/* Interpreter with which to associate the
+Tcl_SetResult(
+    Tcl_Interp *interp,		/* Interpreter with which to associate the
 				 * return value. */
-    register char *string;	/* Value to be returned.  If NULL, the
-				 * result is set to an empty string. */
-    Tcl_FreeProc *freeProc;	/* Gives information about the string:
-				 * TCL_STATIC, TCL_VOLATILE, or the address
-				 * of a Tcl_FreeProc such as free. */
+    register char *result,	/* Value to be returned. If NULL, the result
+				 * is set to an empty string. */
+    Tcl_FreeProc *freeProc)	/* Gives information about the string:
+				 * TCL_STATIC, TCL_VOLATILE, or the address of
+				 * a Tcl_FreeProc such as free. */
 {
     Interp *iPtr = (Interp *) interp;
     int length;
     register Tcl_FreeProc *oldFreeProc = iPtr->freeProc;
     char *oldResult = iPtr->result;
 
-    if (string == NULL) {
+    if (result == NULL) {
 	iPtr->resultSpace[0] = 0;
 	iPtr->result = iPtr->resultSpace;
 	iPtr->freeProc = 0;
     } else if (freeProc == TCL_VOLATILE) {
-	length = strlen(string);
+	length = strlen(result);
 	if (length > TCL_RESULT_SIZE) {
 	    iPtr->result = (char *) ckalloc((unsigned) length+1);
 	    iPtr->freeProc = TCL_DYNAMIC;
@@ -249,16 +416,16 @@ Tcl_SetResult(interp, string, freeProc)
 	    iPtr->result = iPtr->resultSpace;
 	    iPtr->freeProc = 0;
 	}
-	strcpy(iPtr->result, string);
+	strcpy(iPtr->result, result);
     } else {
-	iPtr->result = string;
+	iPtr->result = result;
 	iPtr->freeProc = freeProc;
     }
 
     /*
-     * If the old result was dynamically-allocated, free it up.  Do it
-     * here, rather than at the beginning, in case the new result value
-     * was part of the old result value.
+     * If the old result was dynamically-allocated, free it up. Do it here,
+     * rather than at the beginning, in case the new result value was part of
+     * the old result value.
      */
 
     if (oldFreeProc != 0) {
@@ -294,17 +461,17 @@ Tcl_SetResult(interp, string, freeProc)
  */
 
 CONST char *
-Tcl_GetStringResult(interp)
-     register Tcl_Interp *interp; /* Interpreter whose result to return. */
+Tcl_GetStringResult(
+    register Tcl_Interp *interp)/* Interpreter whose result to return. */
 {
     /*
-     * If the string result is empty, move the object result to the
-     * string result, then reset the object result.
+     * If the string result is empty, move the object result to the string
+     * result, then reset the object result.
      */
-    
+
     if (*(interp->result) == 0) {
 	Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	        TCL_VOLATILE);
+		TCL_VOLATILE);
     }
     return interp->result;
 }
@@ -320,22 +487,20 @@ Tcl_GetStringResult(interp)
  *	None.
  *
  * Side effects:
- *	interp->objResultPtr is left pointing to the object referenced
- *	by objPtr. The object's reference count is incremented since
- *	there is now a new reference to it. The reference count for any
- *	old objResultPtr value is decremented. Also, the string result
- *	is reset.
+ *	interp->objResultPtr is left pointing to the object referenced by
+ *	objPtr. The object's reference count is incremented since there is now
+ *	a new reference to it. The reference count for any old objResultPtr
+ *	value is decremented. Also, the string result is reset.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetObjResult(interp, objPtr)
-    Tcl_Interp *interp;		/* Interpreter with which to associate the
+Tcl_SetObjResult(
+    Tcl_Interp *interp,		/* Interpreter with which to associate the
 				 * return object value. */
-    register Tcl_Obj *objPtr;	/* Tcl object to be returned. If NULL, the
-				 * obj result is made an empty string
-				 * object. */
+    register Tcl_Obj *objPtr)	/* Tcl object to be returned. If NULL, the obj
+				 * result is made an empty string object. */
 {
     register Interp *iPtr = (Interp *) interp;
     register Tcl_Obj *oldObjResult = iPtr->objResultPtr;
@@ -344,10 +509,10 @@ Tcl_SetObjResult(interp, objPtr)
     Tcl_IncrRefCount(objPtr);	/* since interp result is a reference */
 
     /*
-     * We wait until the end to release the old object result, in case
-     * we are setting the result to itself.
+     * We wait until the end to release the old object result, in case we are
+     * setting the result to itself.
      */
-    
+
     TclDecrRefCount(oldObjResult);
 
     /*
@@ -372,41 +537,41 @@ Tcl_SetObjResult(interp, objPtr)
  * Tcl_GetObjResult --
  *
  *	Returns an interpreter's result value as a Tcl object. The object's
- *	reference count is not modified; the caller must do that if it
- *	needs to hold on to a long-term reference to it.
+ *	reference count is not modified; the caller must do that if it needs
+ *	to hold on to a long-term reference to it.
  *
  * Results:
  *	The interpreter's result as an object.
  *
  * Side effects:
- *	If the interpreter has a non-empty string result, the result object
- *	is either empty or stale because some procedure set interp->result
- *	directly. If so, the string result is moved to the result object
- *	then the string result is reset.
+ *	If the interpreter has a non-empty string result, the result object is
+ *	either empty or stale because some function set interp->result
+ *	directly. If so, the string result is moved to the result object then
+ *	the string result is reset.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_GetObjResult(interp)
-    Tcl_Interp *interp;		/* Interpreter whose result to return. */
+Tcl_GetObjResult(
+    Tcl_Interp *interp)		/* Interpreter whose result to return. */
 {
     register Interp *iPtr = (Interp *) interp;
     Tcl_Obj *objResultPtr;
     int length;
 
     /*
-     * If the string result is non-empty, move the string result to the
-     * object result, then reset the string result.
+     * If the string result is non-empty, move the string result to the object
+     * result, then reset the string result.
      */
-    
+
     if (*(iPtr->result) != 0) {
 	ResetObjResult(iPtr);
-	
+
 	objResultPtr = iPtr->objResultPtr;
 	length = strlen(iPtr->result);
 	TclInitStringRep(objResultPtr, iPtr->result, length);
-	
+
 	if (iPtr->freeProc != NULL) {
 	    if (iPtr->freeProc == TCL_DYNAMIC) {
 		ckfree(iPtr->result);
@@ -426,110 +591,51 @@ Tcl_GetObjResult(interp)
  *
  * Tcl_AppendResultVA --
  *
- *	Append a variable number of strings onto the interpreter's string
- *	result.
+ *	Append a variable number of strings onto the interpreter's result.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The result of the interpreter given by the first argument is
- *	extended by the strings in the va_list (up to a terminating NULL
- *	argument).
+ *	The result of the interpreter given by the first argument is extended
+ *	by the strings in the va_list (up to a terminating NULL argument).
  *
- *	If the string result is empty, the object result is moved to the
- *	string result, then the object result is reset.
+ *	If the string result is non-empty, the object result forced to be a
+ *	duplicate of it first. There will be a string result afterwards.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AppendResultVA (interp, argList)
-    Tcl_Interp *interp;		/* Interpreter with which to associate the
+Tcl_AppendResultVA(
+    Tcl_Interp *interp,		/* Interpreter with which to associate the
 				 * return value. */
-    va_list argList;		/* Variable argument list. */
+    va_list argList)		/* Variable argument list. */
 {
-#define STATIC_LIST_SIZE 16
-    Interp *iPtr = (Interp *) interp;
-    char *string, *static_list[STATIC_LIST_SIZE];
-    char **args = static_list;
-    int nargs_space = STATIC_LIST_SIZE;
-    int nargs, newSpace, i;
-
-    /*
-     * If the string result is empty, move the object result to the
-     * string result, then reset the object result.
-     */
+    Tcl_Obj *objPtr = Tcl_GetObjResult(interp);
 
-    if (*(iPtr->result) == 0) {
-	Tcl_SetResult((Tcl_Interp *) iPtr,
-	        TclGetString(Tcl_GetObjResult((Tcl_Interp *) iPtr)),
-	        TCL_VOLATILE);
-    }
-    
-    /*
-     * Scan through all the arguments to see how much space is needed
-     * and save pointers to the arguments in the args array,
-     * reallocating as necessary.
-     */
-
-    nargs = 0;
-    newSpace = 0;
-    while (1) {
- 	string = va_arg(argList, char *);
-	if (string == NULL) {
-	    break;
-	}
- 	if (nargs >= nargs_space) {
- 	    /* 
- 	     * Expand the args buffer
- 	     */
- 	    nargs_space += STATIC_LIST_SIZE;
- 	    if (args == static_list) {
- 	    	args = (void *)ckalloc(nargs_space * sizeof(char *));
- 		for (i = 0; i < nargs; ++i) {
- 		    args[i] = static_list[i];
- 		}
- 	    } else {
- 		args = (void *)ckrealloc((void *)args,
-			nargs_space * sizeof(char *));
- 	    }
- 	}
-  	newSpace += strlen(string);
-	args[nargs++] = string;
+    if (Tcl_IsShared(objPtr)) {
+	objPtr = Tcl_DuplicateObj(objPtr);
     }
+    Tcl_AppendStringsToObjVA(objPtr, argList);
+    Tcl_SetObjResult(interp, objPtr);
 
     /*
-     * If the append buffer isn't already setup and large enough to hold
-     * the new data, set it up.
+     * Strictly we should call Tcl_GetStringResult(interp) here to make sure
+     * that interp->result is correct according to the old contract, but that
+     * makes the performance of much code (e.g. in Tk) absolutely awful. So we
+     * leave it out; code that really wants interp->result can just insert the
+     * calls to Tcl_GetStringResult() itself. [Patch 1041072 discussion]
      */
 
-    if ((iPtr->result != iPtr->appendResult)
-	    || (iPtr->appendResult[iPtr->appendUsed] != 0)
-	    || ((newSpace + iPtr->appendUsed) >= iPtr->appendAvl)) {
-       SetupAppendBuffer(iPtr, newSpace);
-    }
-
+#ifdef USE_DIRECT_INTERP_RESULT_ACCESS
     /*
-     * Now go through all the argument strings again, copying them into the
-     * buffer.
+     * Ensure that the interp->result is legal so old Tcl 7.* code still
+     * works. There's still embarrasingly much of it about...
      */
 
-    for (i = 0; i < nargs; ++i) {
- 	string = args[i];
-  	strcpy(iPtr->appendResult + iPtr->appendUsed, string);
-  	iPtr->appendUsed += strlen(string);
-    }
- 
-    /*
-     * If we had to allocate a buffer from the heap, 
-     * free it now.
-     */
- 
-    if (args != static_list) {
-     	ckfree((void *)args);
-    }
-#undef STATIC_LIST_SIZE
+    (void) Tcl_GetStringResult(interp);
+#endif /* USE_DIRECT_INTERP_RESULT_ACCESS */
 }
 
 /*
@@ -537,30 +643,29 @@ Tcl_AppendResultVA (interp, argList)
  *
  * Tcl_AppendResult --
  *
- *	Append a variable number of strings onto the interpreter's string
- *	result.
+ *	Append a variable number of strings onto the interpreter's result.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The result of the interpreter given by the first argument is
- *	extended by the strings given by the second and following arguments
- *	(up to a terminating NULL argument).
+ *	The result of the interpreter given by the first argument is extended
+ *	by the strings given by the second and following arguments (up to a
+ *	terminating NULL argument).
  *
- *	If the string result is empty, the object result is moved to the
- *	string result, then the object result is reset.
+ *	If the string result is non-empty, the object result forced to be a
+ *	duplicate of it first. There will be a string result afterwards.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AppendResult TCL_VARARGS_DEF(Tcl_Interp *,arg1)
+Tcl_AppendResult(
+    Tcl_Interp *interp, ...)
 {
-    Tcl_Interp *interp;
     va_list argList;
 
-    interp = TCL_VARARGS_START(Tcl_Interp *,arg1,argList);
+    va_start(argList, interp);
     Tcl_AppendResultVA(interp, argList);
     va_end(argList);
 }
@@ -577,10 +682,10 @@ Tcl_AppendResult TCL_VARARGS_DEF(Tcl_Interp *,arg1)
  *	None.
  *
  * Side effects:
- *	The result in the interpreter given by the first argument is
- *	extended with a list element converted from string. A separator
- *	space is added before the converted list element unless the current
- *	result is empty, contains the single character "{", or ends in " {".
+ *	The result in the interpreter given by the first argument is extended
+ *	with a list element converted from string. A separator space is added
+ *	before the converted list element unless the current result is empty,
+ *	contains the single character "{", or ends in " {".
  *
  *	If the string result is empty, the object result is moved to the
  *	string result, then the object result is reset.
@@ -589,11 +694,11 @@ Tcl_AppendResult TCL_VARARGS_DEF(Tcl_Interp *,arg1)
  */
 
 void
-Tcl_AppendElement(interp, string)
-    Tcl_Interp *interp;		/* Interpreter whose result is to be
+Tcl_AppendElement(
+    Tcl_Interp *interp,		/* Interpreter whose result is to be
 				 * extended. */
-    CONST char *string;		/* String to convert to list element and
-				 * add to result. */
+    CONST char *element)	/* String to convert to list element and add
+				 * to result. */
 {
     Interp *iPtr = (Interp *) interp;
     char *dst;
@@ -601,30 +706,27 @@ Tcl_AppendElement(interp, string)
     int flags;
 
     /*
-     * If the string result is empty, move the object result to the
-     * string result, then reset the object result.
+     * If the string result is empty, move the object result to the string
+     * result, then reset the object result.
      */
 
-    if (*(iPtr->result) == 0) {
-	Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	        TCL_VOLATILE);
-    }
+    (void) Tcl_GetStringResult(interp);
 
     /*
-     * See how much space is needed, and grow the append buffer if
-     * needed to accommodate the list element.
+     * See how much space is needed, and grow the append buffer if needed to
+     * accommodate the list element.
      */
 
-    size = Tcl_ScanElement(string, &flags) + 1;
+    size = Tcl_ScanElement(element, &flags) + 1;
     if ((iPtr->result != iPtr->appendResult)
 	    || (iPtr->appendResult[iPtr->appendUsed] != 0)
 	    || ((size + iPtr->appendUsed) >= iPtr->appendAvl)) {
-       SetupAppendBuffer(iPtr, size+iPtr->appendUsed);
+	SetupAppendBuffer(iPtr, size+iPtr->appendUsed);
     }
 
     /*
-     * Convert the string into a list element and copy it to the
-     * buffer that's forming, with a space separator if needed.
+     * Convert the string into a list element and copy it to the buffer that's
+     * forming, with a space separator if needed.
      */
 
     dst = iPtr->appendResult + iPtr->appendUsed;
@@ -632,8 +734,16 @@ Tcl_AppendElement(interp, string)
 	iPtr->appendUsed++;
 	*dst = ' ';
 	dst++;
+
+	/*
+	 * If we need a space to separate this element from preceding stuff,
+	 * then this element will not lead a list, and need not have it's
+	 * leading '#' quoted.
+	 */
+
+	flags |= TCL_DONT_QUOTE_HASH;
     }
-    iPtr->appendUsed += Tcl_ConvertElement(string, dst, flags);
+    iPtr->appendUsed += Tcl_ConvertElement(element, dst, flags);
 }
 
 /*
@@ -641,10 +751,10 @@ Tcl_AppendElement(interp, string)
  *
  * SetupAppendBuffer --
  *
- *	This procedure makes sure that there is an append buffer properly
- *	initialized, if necessary, from the interpreter's result, and
- *	that it has at least enough room to accommodate newSpace new
- *	bytes of information.
+ *	This function makes sure that there is an append buffer properly
+ *	initialized, if necessary, from the interpreter's result, and that it
+ *	has at least enough room to accommodate newSpace new bytes of
+ *	information.
  *
  * Results:
  *	None.
@@ -656,10 +766,10 @@ Tcl_AppendElement(interp, string)
  */
 
 static void
-SetupAppendBuffer(iPtr, newSpace)
-    Interp *iPtr;		/* Interpreter whose result is being set up. */
-    int newSpace;		/* Make sure that at least this many bytes
-				 * of new information may be added. */
+SetupAppendBuffer(
+    Interp *iPtr,		/* Interpreter whose result is being set up. */
+    int newSpace)		/* Make sure that at least this many bytes of
+				 * new information may be added. */
 {
     int totalSpace;
 
@@ -671,9 +781,9 @@ SetupAppendBuffer(iPtr, newSpace)
 
     if (iPtr->result != iPtr->appendResult) {
 	/*
-	 * If an oversized buffer was used recently, then free it up
-	 * so we go back to a smaller buffer.  This avoids tying up
-	 * memory forever after a large operation.
+	 * If an oversized buffer was used recently, then free it up so we go
+	 * back to a smaller buffer. This avoids tying up memory forever after
+	 * a large operation.
 	 */
 
 	if (iPtr->appendAvl > 500) {
@@ -685,13 +795,13 @@ SetupAppendBuffer(iPtr, newSpace)
     } else if (iPtr->result[iPtr->appendUsed] != 0) {
 	/*
 	 * Most likely someone has modified a result created by
-	 * Tcl_AppendResult et al. so that it has a different size.
-	 * Just recompute the size.
+	 * Tcl_AppendResult et al. so that it has a different size. Just
+	 * recompute the size.
 	 */
 
 	iPtr->appendUsed = strlen(iPtr->result);
     }
-    
+
     totalSpace = newSpace + iPtr->appendUsed;
     if (totalSpace >= iPtr->appendAvl) {
 	char *new;
@@ -711,7 +821,7 @@ SetupAppendBuffer(iPtr, newSpace)
     } else if (iPtr->result != iPtr->appendResult) {
 	strcpy(iPtr->appendResult, iPtr->result);
     }
-    
+
     Tcl_FreeResult((Tcl_Interp *) iPtr);
     iPtr->result = iPtr->appendResult;
 }
@@ -721,9 +831,9 @@ SetupAppendBuffer(iPtr, newSpace)
  *
  * Tcl_FreeResult --
  *
- *	This procedure frees up the memory associated with an interpreter's
+ *	This function frees up the memory associated with an interpreter's
  *	string result. It also resets the interpreter's result object.
- *	Tcl_FreeResult is most commonly used when a procedure is about to
+ *	Tcl_FreeResult is most commonly used when a function is about to
  *	replace one result value with another.
  *
  * Results:
@@ -731,19 +841,19 @@ SetupAppendBuffer(iPtr, newSpace)
  *
  * Side effects:
  *	Frees the memory associated with interp's string result and sets
- *	interp->freeProc to zero, but does not change interp->result or
- *	clear error state. Resets interp's result object to an unshared
- *	empty object.
+ *	interp->freeProc to zero, but does not change interp->result or clear
+ *	error state. Resets interp's result object to an unshared empty
+ *	object.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_FreeResult(interp)
-    register Tcl_Interp *interp; /* Interpreter for which to free result. */
+Tcl_FreeResult(
+    register Tcl_Interp *interp)/* Interpreter for which to free result. */
 {
     register Interp *iPtr = (Interp *) interp;
-    
+
     if (iPtr->freeProc != NULL) {
 	if (iPtr->freeProc == TCL_DYNAMIC) {
 	    ckfree(iPtr->result);
@@ -752,7 +862,7 @@ Tcl_FreeResult(interp)
 	}
 	iPtr->freeProc = 0;
     }
-    
+
     ResetObjResult(iPtr);
 }
 
@@ -761,24 +871,23 @@ Tcl_FreeResult(interp)
  *
  * Tcl_ResetResult --
  *
- *	This procedure resets both the interpreter's string and object
- *	results.
+ *	This function resets both the interpreter's string and object results.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	It resets the result object to an unshared empty object. It
- *	then restores the interpreter's string result area to its default
- *	initialized state, freeing up any memory that may have been
- *	allocated. It also clears any error information for the interpreter.
+ *	It resets the result object to an unshared empty object. It then
+ *	restores the interpreter's string result area to its default
+ *	initialized state, freeing up any memory that may have been allocated.
+ *	It also clears any error information for the interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_ResetResult(interp)
-    register Tcl_Interp *interp; /* Interpreter for which to clear result. */
+Tcl_ResetResult(
+    register Tcl_Interp *interp)/* Interpreter for which to clear result. */
 {
     register Interp *iPtr = (Interp *) interp;
 
@@ -793,7 +902,31 @@ Tcl_ResetResult(interp)
     }
     iPtr->result = iPtr->resultSpace;
     iPtr->resultSpace[0] = 0;
-    iPtr->flags &= ~(ERR_ALREADY_LOGGED | ERR_IN_PROGRESS | ERROR_CODE_SET);
+    if (iPtr->errorCode) {
+	/* Legacy support */
+	if (iPtr->flags & ERR_LEGACY_COPY) {
+	    Tcl_ObjSetVar2(interp, iPtr->ecVar, NULL,
+		    iPtr->errorCode, TCL_GLOBAL_ONLY);
+	}
+	Tcl_DecrRefCount(iPtr->errorCode);
+	iPtr->errorCode = NULL;
+    }
+    if (iPtr->errorInfo) {
+	/* Legacy support */
+	if (iPtr->flags & ERR_LEGACY_COPY) {
+	    Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL,
+		    iPtr->errorInfo, TCL_GLOBAL_ONLY);
+	}
+	Tcl_DecrRefCount(iPtr->errorInfo);
+	iPtr->errorInfo = NULL;
+    }
+    iPtr->returnLevel = 1;
+    iPtr->returnCode = TCL_OK;
+    if (iPtr->returnOpts) {
+	Tcl_DecrRefCount(iPtr->returnOpts);
+	iPtr->returnOpts = NULL;
+    }
+    iPtr->flags &= ~(ERR_ALREADY_LOGGED | ERR_LEGACY_COPY);
 }
 
 /*
@@ -801,22 +934,22 @@ Tcl_ResetResult(interp)
  *
  * ResetObjResult --
  *
- *	Procedure used to reset an interpreter's Tcl result object.
+ *	Function used to reset an interpreter's Tcl result object.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	Resets the interpreter's result object to an unshared empty string
- *	object with ref count one. It does not clear any error information
- *	in the interpreter.
+ *	object with ref count one. It does not clear any error information in
+ *	the interpreter.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-ResetObjResult(iPtr)
-    register Interp *iPtr;	/* Points to the interpreter whose result
+ResetObjResult(
+    register Interp *iPtr)	/* Points to the interpreter whose result
 				 * object should be reset. */
 {
     register Tcl_Obj *objResultPtr = iPtr->objResultPtr;
@@ -827,17 +960,15 @@ ResetObjResult(iPtr)
 	Tcl_IncrRefCount(objResultPtr);
 	iPtr->objResultPtr = objResultPtr;
     } else {
-	if ((objResultPtr->bytes != NULL)
-	        && (objResultPtr->bytes != tclEmptyStringRep)) {
-	    ckfree((char *) objResultPtr->bytes);
-	}
-	objResultPtr->bytes  = tclEmptyStringRep;
-	objResultPtr->length = 0;
-	if ((objResultPtr->typePtr != NULL)
-	        && (objResultPtr->typePtr->freeIntRepProc != NULL)) {
-	    objResultPtr->typePtr->freeIntRepProc(objResultPtr);
+	if (objResultPtr->bytes != tclEmptyStringRep) {
+	    if (objResultPtr->bytes) {
+		ckfree((char *) objResultPtr->bytes);
+	    }
+	    objResultPtr->bytes = tclEmptyStringRep;
+	    objResultPtr->length = 0;
 	}
-	objResultPtr->typePtr = (Tcl_ObjType *) NULL;
+	TclFreeIntRep(objResultPtr);
+	objResultPtr->typePtr = NULL;
     }
 }
 
@@ -846,48 +977,40 @@ ResetObjResult(iPtr)
  *
  * Tcl_SetErrorCodeVA --
  *
- *	This procedure is called to record machine-readable information
- *	about an error that is about to be returned.
+ *	This function is called to record machine-readable information about
+ *	an error that is about to be returned.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The errorCode global variable is modified to hold all of the
- *	arguments to this procedure, in a list form with each argument
- *	becoming one element of the list.  A flag is set internally
- *	to remember that errorCode has been set, so the variable doesn't
- *	get set automatically when the error is returned.
+ *	The errorCode field of the interp is modified to hold all of the
+ *	arguments to this function, in a list form with each argument becoming
+ *	one element of the list.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetErrorCodeVA (interp, argList)
-    Tcl_Interp *interp;		/* Interpreter in which to access the errorCode
-				 * variable. */
-    va_list argList;		/* Variable argument list. */
+Tcl_SetErrorCodeVA(
+    Tcl_Interp *interp,		/* Interpreter in which to set errorCode */
+    va_list argList)		/* Variable argument list. */
 {
-    char *string;
-    int flags;
-    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *errorObj = Tcl_NewObj();
 
     /*
-     * Scan through the arguments one at a time, appending them to
-     * $errorCode as list elements.
+     * Scan through the arguments one at a time, appending them to the
+     * errorCode field as list elements.
      */
 
-    flags = TCL_GLOBAL_ONLY | TCL_LIST_ELEMENT;
     while (1) {
-	string = va_arg(argList, char *);
-	if (string == NULL) {
+	char *elem = va_arg(argList, char *);
+	if (elem == NULL) {
 	    break;
 	}
-	(void) Tcl_SetVar2((Tcl_Interp *) iPtr, "errorCode",
-		(char *) NULL, string, flags);
-	flags |= TCL_APPEND_VALUE;
+	Tcl_ListObjAppendElement(NULL, errorObj, Tcl_NewStringObj(elem, -1));
     }
-    iPtr->flags |= ERROR_CODE_SET;
+    Tcl_SetObjErrorCode(interp, errorObj);
 }
 
 /*
@@ -895,34 +1018,32 @@ Tcl_SetErrorCodeVA (interp, argList)
  *
  * Tcl_SetErrorCode --
  *
- *	This procedure is called to record machine-readable information
- *	about an error that is about to be returned.
+ *	This function is called to record machine-readable information about
+ *	an error that is about to be returned.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The errorCode global variable is modified to hold all of the
- *	arguments to this procedure, in a list form with each argument
- *	becoming one element of the list.  A flag is set internally
- *	to remember that errorCode has been set, so the variable doesn't
- *	get set automatically when the error is returned.
+ *	The errorCode field of the interp is modified to hold all of the
+ *	arguments to this function, in a list form with each argument becoming
+ *	one element of the list.
  *
  *----------------------------------------------------------------------
  */
-	/* VARARGS2 */
+
 void
-Tcl_SetErrorCode TCL_VARARGS_DEF(Tcl_Interp *,arg1)
+Tcl_SetErrorCode(
+    Tcl_Interp *interp, ...)
 {
-    Tcl_Interp *interp;
     va_list argList;
 
     /*
-     * Scan through the arguments one at a time, appending them to
-     * $errorCode as list elements.
+     * Scan through the arguments one at a time, appending them to the
+     * errorCode field as list elements.
      */
 
-    interp = TCL_VARARGS_START(Tcl_Interp *,arg1,argList);
+    va_start(argList, interp);
     Tcl_SetErrorCodeVA(interp, argList);
     va_end(argList);
 }
@@ -932,32 +1053,484 @@ Tcl_SetErrorCode TCL_VARARGS_DEF(Tcl_Interp *,arg1)
  *
  * Tcl_SetObjErrorCode --
  *
- *	This procedure is called to record machine-readable information
- *	about an error that is about to be returned. The caller should
- *	build a list object up and pass it to this routine.
+ *	This function is called to record machine-readable information about
+ *	an error that is about to be returned. The caller should build a list
+ *	object up and pass it to this routine.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The errorCode global variable is modified to be the new value.
- *	A flag is set internally to remember that errorCode has been
- *	set, so the variable doesn't get set automatically when the
- *	error is returned.
+ *	The errorCode field of the interp is set to the new value.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetObjErrorCode(interp, errorObjPtr)
-    Tcl_Interp *interp;
-    Tcl_Obj *errorObjPtr;
+Tcl_SetObjErrorCode(
+    Tcl_Interp *interp,
+    Tcl_Obj *errorObjPtr)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    if (iPtr->errorCode) {
+	Tcl_DecrRefCount(iPtr->errorCode);
+    }
+    iPtr->errorCode = errorObjPtr;
+    Tcl_IncrRefCount(iPtr->errorCode);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetKeys --
+ *
+ *	Returns a Tcl_Obj * array of the standard keys used in the return
+ *	options dictionary.
+ *
+ *	Broadly sharing one copy of these key values helps with both memory
+ *	efficiency and dictionary lookup times.
+ *
+ * Results:
+ *	A Tcl_Obj * array.
+ *
+ * Side effects:
+ * 	First time called in a thread, creates the keys (allocating memory)
+ * 	and arranges for their cleanup at thread exit.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_Obj **
+GetKeys(void)
 {
-    Interp *iPtr;
-    
-    iPtr = (Interp *) interp;
-    Tcl_SetVar2Ex(interp, "errorCode", NULL, errorObjPtr, TCL_GLOBAL_ONLY);
-    iPtr->flags |= ERROR_CODE_SET;
+    static Tcl_ThreadDataKey returnKeysKey;
+    Tcl_Obj **keys = Tcl_GetThreadData(&returnKeysKey,
+	    (int) (KEY_LAST * sizeof(Tcl_Obj *)));
+
+    if (keys[0] == NULL) {
+	/*
+	 * First call in this thread, create the keys...
+	 */
+
+	int i;
+
+	TclNewLiteralStringObj(keys[KEY_CODE],	    "-code");
+	TclNewLiteralStringObj(keys[KEY_ERRORCODE], "-errorcode");
+	TclNewLiteralStringObj(keys[KEY_ERRORINFO], "-errorinfo");
+	TclNewLiteralStringObj(keys[KEY_ERRORLINE], "-errorline");
+	TclNewLiteralStringObj(keys[KEY_LEVEL],	    "-level");
+	TclNewLiteralStringObj(keys[KEY_OPTIONS],   "-options");
+
+	for (i = KEY_CODE; i < KEY_LAST; i++) {
+	    Tcl_IncrRefCount(keys[i]);
+	}
+
+	/*
+	 * ... and arrange for their clenaup.
+	 */
+
+	Tcl_CreateThreadExitHandler(ReleaseKeys, (ClientData) keys);
+    }
+    return keys;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ReleaseKeys --
+ *
+ *	Called as a thread exit handler to cleanup return options dictionary
+ *	keys.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ * 	Frees memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ReleaseKeys(
+    ClientData clientData)
+{
+    Tcl_Obj **keys = (Tcl_Obj **)clientData;
+    int i;
+
+    for (i = KEY_CODE; i < KEY_LAST; i++) {
+	Tcl_DecrRefCount(keys[i]);
+	keys[i] = NULL;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclProcessReturn --
+ *
+ *	Does the work of the [return] command based on the code, level, and
+ *	returnOpts arguments. Note that the code argument must agree with the
+ *	-code entry in returnOpts and the level argument must agree with the
+ *	-level entry in returnOpts, as is the case for values returned from
+ *	TclMergeReturnOptions.
+ *
+ * Results:
+ *	Returns the return code the [return] command should return.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclProcessReturn(
+    Tcl_Interp *interp,
+    int code,
+    int level,
+    Tcl_Obj *returnOpts)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *valuePtr;
+    Tcl_Obj **keys = GetKeys();
+
+    /*
+     * Store the merged return options.
+     */
+
+    if (iPtr->returnOpts != returnOpts) {
+	if (iPtr->returnOpts) {
+	    Tcl_DecrRefCount(iPtr->returnOpts);
+	}
+	iPtr->returnOpts = returnOpts;
+	Tcl_IncrRefCount(iPtr->returnOpts);
+    }
+
+    if (code == TCL_ERROR) {
+	if (iPtr->errorInfo) {
+	    Tcl_DecrRefCount(iPtr->errorInfo);
+	    iPtr->errorInfo = NULL;
+	}
+	Tcl_DictObjGet(NULL, iPtr->returnOpts, keys[KEY_ERRORINFO], &valuePtr);
+	if (valuePtr != NULL) {
+	    int infoLen;
+
+	    (void) TclGetStringFromObj(valuePtr, &infoLen);
+	    if (infoLen) {
+		iPtr->errorInfo = valuePtr;
+		Tcl_IncrRefCount(iPtr->errorInfo);
+		iPtr->flags |= ERR_ALREADY_LOGGED;
+	    }
+	}
+	Tcl_DictObjGet(NULL, iPtr->returnOpts, keys[KEY_ERRORCODE], &valuePtr);
+	if (valuePtr != NULL) {
+	    Tcl_SetObjErrorCode(interp, valuePtr);
+	} else {
+	    Tcl_SetErrorCode(interp, "NONE", NULL);
+	}
+
+	Tcl_DictObjGet(NULL, iPtr->returnOpts, keys[KEY_ERRORLINE], &valuePtr);
+	if (valuePtr != NULL) {
+	    TclGetIntFromObj(NULL, valuePtr, &iPtr->errorLine);
+	}
+    }
+    if (level != 0) {
+	iPtr->returnLevel = level;
+	iPtr->returnCode = code;
+	return TCL_RETURN;
+    }
+    if (code == TCL_ERROR) {
+	iPtr->flags |= ERR_LEGACY_COPY;
+    }
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclMergeReturnOptions --
+ *
+ *	Parses, checks, and stores the options to the [return] command.
+ *
+ * Results:
+ *	Returns TCL_ERROR is any of the option values are invalid. Otherwise,
+ *	returns TCL_OK, and writes the returnOpts, code, and level values to
+ *	the pointers provided.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclMergeReturnOptions(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[],	/* Argument objects. */
+    Tcl_Obj **optionsPtrPtr,	/* If not NULL, points to space for a (Tcl_Obj
+				 * *) where the pointer to the merged return
+				 * options dictionary should be written */
+    int *codePtr,		/* If not NULL, points to space where the
+				 * -code value should be written */
+    int *levelPtr)		/* If not NULL, points to space where the
+				 * -level value should be written */
+{
+    int code=TCL_OK;
+    int level = 1;
+    Tcl_Obj *valuePtr;
+    Tcl_Obj *returnOpts = Tcl_NewObj();
+    Tcl_Obj **keys = GetKeys();
+
+    for (;  objc > 1;  objv += 2, objc -= 2) {
+	int optLen;
+	CONST char *opt = TclGetStringFromObj(objv[0], &optLen);
+	int compareLen;
+	CONST char *compare =
+		TclGetStringFromObj(keys[KEY_OPTIONS], &compareLen);
+
+	if ((optLen == compareLen) && (strcmp(opt, compare) == 0)) {
+	    Tcl_DictSearch search;
+	    int done = 0;
+	    Tcl_Obj *keyPtr;
+	    Tcl_Obj *dict = objv[1];
+
+	nestedOptions:
+	    if (TCL_ERROR == Tcl_DictObjFirst(NULL, dict, &search,
+		    &keyPtr, &valuePtr, &done)) {
+		/*
+		 * Value is not a legal dictionary.
+		 */
+
+		Tcl_ResetResult(interp);
+		Tcl_AppendResult(interp, "bad ", compare,
+			" value: expected dictionary but got \"",
+			TclGetString(objv[1]), "\"", NULL);
+		goto error;
+	    }
+
+	    while (!done) {
+		Tcl_DictObjPut(NULL, returnOpts, keyPtr, valuePtr);
+		Tcl_DictObjNext(&search, &keyPtr, &valuePtr, &done);
+	    }
+
+	    Tcl_DictObjGet(NULL, returnOpts, keys[KEY_OPTIONS], &valuePtr);
+	    if (valuePtr != NULL) {
+		dict = valuePtr;
+		Tcl_DictObjRemove(NULL, returnOpts, keys[KEY_OPTIONS]);
+		goto nestedOptions;
+	    }
+
+	} else {
+	    Tcl_DictObjPut(NULL, returnOpts, objv[0], objv[1]);
+	}
+    }
+
+    /*
+     * Check for bogus -code value.
+     */
+
+    Tcl_DictObjGet(NULL, returnOpts, keys[KEY_CODE], &valuePtr);
+    if ((valuePtr != NULL)
+	    && (TCL_ERROR == TclGetIntFromObj(NULL, valuePtr, &code))) {
+	static CONST char *returnCodes[] = {
+	    "ok", "error", "return", "break", "continue", NULL
+	};
+
+	if (TCL_ERROR == Tcl_GetIndexFromObj(NULL, valuePtr, returnCodes,
+		NULL, TCL_EXACT, &code)) {
+	    /*
+	     * Value is not a legal return code.
+	     */
+
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "bad completion code \"",
+		    TclGetString(valuePtr),
+		    "\": must be ok, error, return, break, "
+		    "continue, or an integer", NULL);
+	    goto error;
+	}
+    }
+    if (valuePtr != NULL) {
+	Tcl_DictObjRemove(NULL, returnOpts, keys[KEY_CODE]);
+    }
+
+    /*
+     * Check for bogus -level value.
+     */
+
+    Tcl_DictObjGet(NULL, returnOpts, keys[KEY_LEVEL], &valuePtr);
+    if (valuePtr != NULL) {
+	if ((TCL_ERROR == TclGetIntFromObj(NULL, valuePtr, &level))
+		|| (level < 0)) {
+	    /*
+	     * Value is not a legal level.
+	     */
+
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "bad -level value: "
+		    "expected non-negative integer but got \"",
+		    TclGetString(valuePtr), "\"", NULL);
+	    goto error;
+	}
+	Tcl_DictObjRemove(NULL, returnOpts, keys[KEY_LEVEL]);
+    }
+
+    /*
+     * Check for bogus -errorcode value.
+     */
+
+    Tcl_DictObjGet(NULL, returnOpts, keys[KEY_ERRORCODE], &valuePtr);
+    if (valuePtr != NULL) {
+	int length;
+
+	if (TCL_ERROR == Tcl_ListObjLength(NULL, valuePtr, &length )) {
+	    /*
+	     * Value is not a list, which is illegal for -errorcode.
+	     */
+	    Tcl_ResetResult(interp);
+	    Tcl_AppendResult(interp, "bad -errorcode value: "
+			     "expected a list but got \"",
+			     TclGetString(valuePtr), "\"", NULL);
+	    goto error;
+	}
+    }
+
+    /*
+     * Convert [return -code return -level X] to [return -code ok -level X+1]
+     */
+
+    if (code == TCL_RETURN) {
+	level++;
+	code = TCL_OK;
+    }
+
+    if (codePtr != NULL) {
+	*codePtr = code;
+    }
+    if (levelPtr != NULL) {
+	*levelPtr = level;
+    }
+
+    if (optionsPtrPtr == NULL) {
+	/*
+	 * Not passing back the options (?!), so clean them up.
+	 */
+
+	Tcl_DecrRefCount(returnOpts);
+    } else {
+	*optionsPtrPtr = returnOpts;
+    }
+    return TCL_OK;
+
+  error:
+    Tcl_DecrRefCount(returnOpts);
+    return TCL_ERROR;
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * Tcl_GetReturnOptions --
+ *
+ *	Packs up the interp state into a dictionary of return options.
+ *
+ * Results:
+ *	A dictionary of return options.
+ *
+ * Side effects:
+ *	None.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_GetReturnOptions(
+    Tcl_Interp *interp,
+    int result)
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *options;
+    Tcl_Obj **keys = GetKeys();
+
+    if (iPtr->returnOpts) {
+	options = Tcl_DuplicateObj(iPtr->returnOpts);
+    } else {
+	options = Tcl_NewObj();
+    }
+
+    if (result == TCL_RETURN) {
+	Tcl_DictObjPut(NULL, options, keys[KEY_CODE],
+		Tcl_NewIntObj(iPtr->returnCode));
+	Tcl_DictObjPut(NULL, options, keys[KEY_LEVEL],
+		Tcl_NewIntObj(iPtr->returnLevel));
+    } else {
+	Tcl_DictObjPut(NULL, options, keys[KEY_CODE],
+		Tcl_NewIntObj(result));
+	Tcl_DictObjPut(NULL, options, keys[KEY_LEVEL],
+		Tcl_NewIntObj(0));
+    }
+
+    if (result == TCL_ERROR) {
+	Tcl_AddObjErrorInfo(interp, "", -1);
+    }
+    if (iPtr->errorCode) {
+	Tcl_DictObjPut(NULL, options, keys[KEY_ERRORCODE], iPtr->errorCode);
+    }
+    if (iPtr->errorInfo) {
+	Tcl_DictObjPut(NULL, options, keys[KEY_ERRORINFO], iPtr->errorInfo);
+	Tcl_DictObjPut(NULL, options, keys[KEY_ERRORLINE],
+		Tcl_NewIntObj(iPtr->errorLine));
+    }
+    return options;
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * Tcl_SetReturnOptions --
+ *
+ *	Accepts an interp and a dictionary of return options, and sets the
+ *	return options of the interp to match the dictionary.
+ *
+ * Results:
+ *	A standard status code. Usually TCL_OK, but TCL_ERROR if an invalid
+ *	option value was found in the dictionary. If a -level value of 0 is in
+ *	the dictionary, then the -code value in the dictionary will be
+ *	returned (TCL_OK default).
+ *
+ * Side effects:
+ *	Sets the state of the interp.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+int
+Tcl_SetReturnOptions(
+    Tcl_Interp *interp,
+    Tcl_Obj *options)
+{
+    int objc, level, code;
+    Tcl_Obj **objv, *mergedOpts;
+
+    Tcl_IncrRefCount(options);
+    if (TCL_ERROR == TclListObjGetElements(interp, options, &objc, &objv)
+	    || (objc % 2)) {
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "expected dict but got \"",
+		TclGetString(options), "\"", NULL);
+	code = TCL_ERROR;
+    } else if (TCL_ERROR == TclMergeReturnOptions(interp, objc, objv,
+	    &mergedOpts, &code, &level)) {
+	code = TCL_ERROR;
+    } else {
+	code = TclProcessReturn(interp, code, level, mergedOpts);
+    }
+
+    Tcl_DecrRefCount(options);
+    return code;
 }
 
 /*
@@ -965,83 +1538,72 @@ Tcl_SetObjErrorCode(interp, errorObjPtr)
  *
  * TclTransferResult --
  *
- *	Copy the result (and error information) from one interp to 
- *	another.  Used when one interp has caused another interp to 
- *	evaluate a script and then wants to transfer the results back
- *	to itself.
+ *	Copy the result (and error information) from one interp to another.
+ *	Used when one interp has caused another interp to evaluate a script
+ *	and then wants to transfer the results back to itself.
  *
- *	This routine copies the string reps of the result and error 
- *	information.  It does not simply increment the refcounts of the
- *	result and error information objects themselves.
- *	It is not legal to exchange objects between interps, because an
- *	object may be kept alive by one interp, but have an internal rep 
- *	that is only valid while some other interp is alive.  
+ *	This routine copies the string reps of the result and error
+ *	information. It does not simply increment the refcounts of the result
+ *	and error information objects themselves. It is not legal to exchange
+ *	objects between interps, because an object may be kept alive by one
+ *	interp, but have an internal rep that is only valid while some other
+ *	interp is alive.
  *
  * Results:
  *	The target interp's result is set to a copy of the source interp's
- *	result.  The source's error information "$errorInfo" may be
- *	appended to the target's error information and the source's error
- *	code "$errorCode" may be stored in the target's error code.
+ *	result. The source's errorInfo field may be transferred to the
+ *	target's errorInfo field, and the source's errorCode field may be
+ *	transferred to the target's errorCode field.
  *
  * Side effects:
  *	None.
  *
  *-------------------------------------------------------------------------
  */
-	
+
 void
-TclTransferResult(sourceInterp, result, targetInterp)
-    Tcl_Interp *sourceInterp;	/* Interp whose result and error information
-				 * should be moved to the target interp.  
-				 * After moving result, this interp's result 
+TclTransferResult(
+    Tcl_Interp *sourceInterp,	/* Interp whose result and error information
+				 * should be moved to the target interp.
+				 * After moving result, this interp's result
 				 * is reset. */
-    int result;			/* TCL_OK if just the result should be copied, 
-				 * TCL_ERROR if both the result and error 
+    int result,			/* TCL_OK if just the result should be copied,
+				 * TCL_ERROR if both the result and error
 				 * information should be copied. */
-    Tcl_Interp *targetInterp;	/* Interp where result and error information 
-				 * should be stored.  If source and target
-				 * are the same, nothing is done. */
+    Tcl_Interp *targetInterp)	/* Interp where result and error information
+				 * should be stored. If source and target are
+				 * the same, nothing is done. */
 {
-    Interp *iPtr;
-    Tcl_Obj *objPtr;
+    Interp *tiPtr = (Interp *) targetInterp;
+    Interp *siPtr = (Interp *) sourceInterp;
 
     if (sourceInterp == targetInterp) {
 	return;
     }
 
-    if (result == TCL_ERROR) {
+    if (result == TCL_OK && siPtr->returnOpts == NULL) {
 	/*
-	 * An error occurred, so transfer error information from the source
-	 * interpreter to the target interpreter.  Setting the flags tells
-	 * the target interp that it has inherited a partial traceback
-	 * chain, not just a simple error message.
+	 * Special optimization for the common case of normal command return
+	 * code and no explicit return options.
 	 */
 
-	iPtr = (Interp *) sourceInterp;
-        if ((iPtr->flags & ERR_ALREADY_LOGGED) == 0) {
-            Tcl_AddErrorInfo(sourceInterp, "");
-        }
-        iPtr->flags &= ~(ERR_ALREADY_LOGGED);
-        
-        Tcl_ResetResult(targetInterp);
-        
-	objPtr = Tcl_GetVar2Ex(sourceInterp, "errorInfo", NULL,
-		TCL_GLOBAL_ONLY);
-	if (objPtr) {
-	    Tcl_SetVar2Ex(targetInterp, "errorInfo", NULL, objPtr,
-		    TCL_GLOBAL_ONLY);
-	    ((Interp *) targetInterp)->flags |= ERR_IN_PROGRESS;
+	if (tiPtr->returnOpts) {
+	    Tcl_DecrRefCount(tiPtr->returnOpts);
+	    tiPtr->returnOpts = NULL;
 	}
-
-	objPtr = Tcl_GetVar2Ex(sourceInterp, "errorCode", NULL,
-		TCL_GLOBAL_ONLY);
-	if (objPtr) {
-	    Tcl_SetObjErrorCode(targetInterp, objPtr);
-	}
-
+    } else {
+	Tcl_SetReturnOptions(targetInterp,
+		Tcl_GetReturnOptions(sourceInterp, result));
+	tiPtr->flags &= ~(ERR_ALREADY_LOGGED);
     }
-
-    ((Interp *) targetInterp)->returnCode = ((Interp *) sourceInterp)->returnCode;
     Tcl_SetObjResult(targetInterp, Tcl_GetObjResult(sourceInterp));
     Tcl_ResetResult(sourceInterp);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclScan.c b/generic/tclScan.c
index b72bd88..d83c8c9 100644
--- a/generic/tclScan.c
+++ b/generic/tclScan.c
@@ -1,41 +1,31 @@
-/* 
+/*
  * tclScan.c --
  *
  *	This file contains the implementation of the "scan" command.
  *
  * Copyright (c) 1998 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-/*
- * For strtoll() and strtoull() declarations on some platforms...
- */
-#include "tclPort.h"
 
 /*
  * Flag values used by Tcl_ScanObjCmd.
  */
 
-#define SCAN_NOSKIP	0x1		  /* Don't skip blanks. */
-#define SCAN_SUPPRESS	0x2		  /* Suppress assignment. */
-#define SCAN_UNSIGNED	0x4		  /* Read an unsigned value. */
-#define SCAN_WIDTH	0x8		  /* A width value was supplied. */
-
-#define SCAN_SIGNOK	0x10		  /* A +/- character is allowed. */
-#define SCAN_NODIGITS	0x20		  /* No digits have been scanned. */
-#define SCAN_NOZERO	0x40		  /* No zero digits have been scanned. */
-#define SCAN_XOK	0x80		  /* An 'x' is allowed. */
-#define SCAN_PTOK	0x100		  /* Decimal point is allowed. */
-#define SCAN_EXPOK	0x200		  /* An exponent is allowed. */
+#define SCAN_NOSKIP	0x1		/* Don't skip blanks. */
+#define SCAN_SUPPRESS	0x2		/* Suppress assignment. */
+#define SCAN_UNSIGNED	0x4		/* Read an unsigned value. */
+#define SCAN_WIDTH	0x8		/* A width value was supplied. */
 
-#define SCAN_LONGER	0x400		  /* Asked for a wide value. */
+#define SCAN_LONGER	0x400		/* Asked for a wide value. */
+#define SCAN_BIG	0x800		/* Asked for a bignum value. */
 
 /*
- * The following structure contains the information associated with
- * a character set.
+ * The following structure contains the information associated with a
+ * character set.
  */
 
 typedef struct CharSet {
@@ -53,20 +43,20 @@ typedef struct CharSet {
  * Declarations for functions used only in this file.
  */
 
-static char *	BuildCharSet _ANSI_ARGS_((CharSet *cset, char *format));
-static int	CharInSet _ANSI_ARGS_((CharSet *cset, int ch));
-static void	ReleaseCharSet _ANSI_ARGS_((CharSet *cset));
-static int	ValidateFormat _ANSI_ARGS_((Tcl_Interp *interp, char *format,
-		    int numVars, int *totalVars));
+static char *		BuildCharSet(CharSet *cset, char *format);
+static int		CharInSet(CharSet *cset, int ch);
+static void		ReleaseCharSet(CharSet *cset);
+static int		ValidateFormat(Tcl_Interp *interp, char *format,
+			    int numVars, int *totalVars);
 
 /*
  *----------------------------------------------------------------------
  *
  * BuildCharSet --
  *
- *	This function examines a character set format specification
- *	and builds a CharSet containing the individual characters and
- *	character ranges specified.
+ *	This function examines a character set format specification and builds
+ *	a CharSet containing the individual characters and character ranges
+ *	specified.
  *
  * Results:
  *	Returns the next format position.
@@ -78,16 +68,16 @@ static int	ValidateFormat _ANSI_ARGS_((Tcl_Interp *interp, char *format,
  */
 
 static char *
-BuildCharSet(cset, format)
-    CharSet *cset;
-    char *format;		/* Points to first char of set. */
+BuildCharSet(
+    CharSet *cset,
+    char *format)		/* Points to first char of set. */
 {
     Tcl_UniChar ch, start;
     int offset, nranges;
     char *end;
 
     memset(cset, 0, sizeof(CharSet));
-    
+
     offset = Tcl_UtfToUniChar(format, &ch);
     if (ch == '^') {
 	cset->exclude = 1;
@@ -111,8 +101,8 @@ BuildCharSet(cset, format)
 	end += Tcl_UtfToUniChar(end, &ch);
     }
 
-    cset->chars = (Tcl_UniChar *) ckalloc(sizeof(Tcl_UniChar)
-	    * (end - format - 1));
+    cset->chars = (Tcl_UniChar *)
+	    ckalloc(sizeof(Tcl_UniChar) * (end - format - 1));
     if (nranges > 0) {
 	cset->ranges = (struct Range *) ckalloc(sizeof(struct Range)*nranges);
     } else {
@@ -133,8 +123,8 @@ BuildCharSet(cset, format)
     while (ch != ']') {
 	if (*format == '-') {
 	    /*
-	     * This may be the first character of a range, so don't add
-	     * it yet.
+	     * This may be the first character of a range, so don't add it
+	     * yet.
 	     */
 
 	    start = ch;
@@ -161,7 +151,7 @@ BuildCharSet(cset, format)
 		} else {
 		    cset->ranges[cset->nranges].start = ch;
 		    cset->ranges[cset->nranges].end = start;
-		}		    
+		}
 		cset->nranges++;
 	    }
 	} else {
@@ -189,13 +179,14 @@ BuildCharSet(cset, format)
  */
 
 static int
-CharInSet(cset, c)
-    CharSet *cset;
-    int c;			/* Character to test, passed as int because
-				 * of non-ANSI prototypes. */
+CharInSet(
+    CharSet *cset,
+    int c)			/* Character to test, passed as int because of
+				 * non-ANSI prototypes. */
 {
     Tcl_UniChar ch = (Tcl_UniChar) c;
     int i, match = 0;
+
     for (i = 0; i < cset->nchars; i++) {
 	if (cset->chars[i] == ch) {
 	    match = 1;
@@ -204,14 +195,13 @@ CharInSet(cset, c)
     }
     if (!match) {
 	for (i = 0; i < cset->nranges; i++) {
-	    if ((cset->ranges[i].start <= ch)
-		    && (ch <= cset->ranges[i].end)) {
+	    if ((cset->ranges[i].start <= ch) && (ch <= cset->ranges[i].end)) {
 		match = 1;
 		break;
 	    }
 	}
     }
-    return (cset->exclude ? !match : match);    
+    return (cset->exclude ? !match : match);
 }
 
 /*
@@ -231,8 +221,8 @@ CharInSet(cset, c)
  */
 
 static void
-ReleaseCharSet(cset)
-    CharSet *cset;
+ReleaseCharSet(
+    CharSet *cset)
 {
     ckfree((char *)cset->chars);
     if (cset->ranges) {
@@ -245,8 +235,8 @@ ReleaseCharSet(cset)
  *
  * ValidateFormat --
  *
- *	Parse the format string and verify that it is properly formed
- *	and that there are exactly enough variables on the command line.
+ *	Parse the format string and verify that it is properly formed and that
+ *	there are exactly enough variables on the command line.
  *
  * Results:
  *	A standard Tcl result.
@@ -258,33 +248,27 @@ ReleaseCharSet(cset)
  */
 
 static int
-ValidateFormat(interp, format, numVars, totalSubs)
-    Tcl_Interp *interp;		/* Current interpreter. */
-    char *format;		/* The format string. */
-    int numVars;		/* The number of variables passed to the
-				 * scan command. */
-    int *totalSubs;		/* The number of variables that will be
+ValidateFormat(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    char *format,		/* The format string. */
+    int numVars,		/* The number of variables passed to the scan
+				 * command. */
+    int *totalSubs)		/* The number of variables that will be
 				 * required. */
 {
-#define STATIC_LIST_SIZE 16
     int gotXpg, gotSequential, value, i, flags;
     char *end;
     Tcl_UniChar ch;
-    int staticAssign[STATIC_LIST_SIZE];
-    int *nassign = staticAssign;
-    int objIndex, xpgSize, nspace = STATIC_LIST_SIZE;
+    int objIndex, xpgSize, nspace = numVars;
+    int *nassign = (int *) TclStackAlloc(interp, nspace * sizeof(int));
     char buf[TCL_UTF_MAX+1];
 
     /*
-     * Initialize an array that records the number of times a variable
-     * is assigned to by the format string.  We use this to detect if
-     * a variable is multiply assigned or left unassigned.
+     * Initialize an array that records the number of times a variable is
+     * assigned to by the format string. We use this to detect if a variable
+     * is multiply assigned or left unassigned.
      */
 
-    if (numVars > nspace) {
-	nassign = (int*)ckalloc(sizeof(int) * numVars);
-	nspace = numVars;
-    }
     for (i = 0; i < nspace; i++) {
 	nassign[i] = 0;
     }
@@ -309,14 +293,14 @@ ValidateFormat(interp, format, numVars, totalSubs)
 	    goto xpgCheckDone;
 	}
 
-	if ((ch < 0x80) && isdigit(UCHAR(ch))) { /* INTL: "C" locale. */
+	if ((ch < 0x80) && isdigit(UCHAR(ch))) {	/* INTL: "C" locale. */
 	    /*
-	     * Check for an XPG3-style %n$ specification.  Note: there
-	     * must not be a mixture of XPG3 specs and non-XPG3 specs
-	     * in the same format string.
+	     * Check for an XPG3-style %n$ specification. Note: there must
+	     * not be a mixture of XPG3 specs and non-XPG3 specs in the same
+	     * format string.
 	     */
 
-	    value = strtoul(format-1, &end, 10); /* INTL: "C" locale. */
+	    value = strtoul(format-1, &end, 10);	/* INTL: "C" locale. */
 	    if (*end != '$') {
 		goto notXpg;
 	    }
@@ -333,31 +317,31 @@ ValidateFormat(interp, format, numVars, totalSubs)
 		/*
 		 * In the case where no vars are specified, the user can
 		 * specify %9999$ legally, so we have to consider special
-		 * rules for growing the assign array.  'value' is
-		 * guaranteed to be > 0.
+		 * rules for growing the assign array. 'value' is guaranteed
+		 * to be > 0.
 		 */
 		xpgSize = (xpgSize > value) ? xpgSize : value;
 	    }
 	    goto xpgCheckDone;
 	}
 
-	notXpg:
+    notXpg:
 	gotSequential = 1;
 	if (gotXpg) {
-	    mixedXPG:
+	mixedXPG:
 	    Tcl_SetResult(interp,
 		    "cannot mix \"%\" and \"%n$\" conversion specifiers",
 		    TCL_STATIC);
 	    goto error;
 	}
 
-	xpgCheckDone:
+    xpgCheckDone:
 	/*
 	 * Parse any width specifier.
 	 */
 
-	if ((ch < 0x80) && isdigit(UCHAR(ch))) { /* INTL: "C" locale. */
-	    value = strtoul(format-1, &format, 10); /* INTL: "C" locale. */
+	if ((ch < 0x80) && isdigit(UCHAR(ch))) {	/* INTL: "C" locale. */
+	    value = strtoul(format-1, &format, 10);	/* INTL: "C" locale. */
 	    flags |= SCAN_WIDTH;
 	    format += Tcl_UtfToUniChar(format, &ch);
 	}
@@ -368,6 +352,12 @@ ValidateFormat(interp, format, numVars, totalSubs)
 
 	switch (ch) {
 	case 'l':
+	    if (*format == 'l') {
+		flags |= SCAN_BIG;
+		format += 1;
+		format += Tcl_UtfToUniChar(format, &ch);
+		break;
+	    }
 	case 'L':
 	    flags |= SCAN_LONGER;
 	case 'h':
@@ -383,104 +373,104 @@ ValidateFormat(interp, format, numVars, totalSubs)
 	 */
 
 	switch (ch) {
-	    case 'c':
-                if (flags & SCAN_WIDTH) {
-		    Tcl_SetResult(interp,
-			    "field width may not be specified in %c conversion",
-			    TCL_STATIC);
-		    goto error;
-                }
-		/*
-		 * Fall through!
-		 */
-	    case 'n':
-	    case 's':
-		if (flags & SCAN_LONGER) {
-		invalidLonger:
-		    buf[Tcl_UniCharToUtf(ch, buf)] = '\0';
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			   "'l' modifier may not be specified in %", buf,
-			   " conversion", NULL);
-		    goto error;
-		}
-		/*
-		 * Fall through!
-		 */
-	    case 'd':
-	    case 'e':
-	    case 'f':
-	    case 'g':
-	    case 'i':
-	    case 'o':
-	    case 'u':
-	    case 'x':
- 		break;
-		/*
-		 * Bracket terms need special checking
-		 */
-	    case '[':
-		if (flags & SCAN_LONGER) {
-		    goto invalidLonger;
-		}
+	case 'c':
+	    if (flags & SCAN_WIDTH) {
+		Tcl_SetResult(interp,
+			"field width may not be specified in %c conversion",
+			TCL_STATIC);
+		goto error;
+	    }
+	    /*
+	     * Fall through!
+	     */
+	case 'n':
+	case 's':
+	    if (flags & (SCAN_LONGER|SCAN_BIG)) {
+	    invalidFieldSize:
+		buf[Tcl_UniCharToUtf(ch, buf)] = '\0';
+		Tcl_AppendResult(interp,
+			"field size modifier may not be specified in %", buf,
+			" conversion", NULL);
+		goto error;
+	    }
+	    /*
+	     * Fall through!
+	     */
+	case 'd':
+	case 'e':
+	case 'f':
+	case 'g':
+	case 'i':
+	case 'o':
+	case 'x':
+	    break;
+	case 'u':
+	    if (flags & SCAN_BIG) {
+		Tcl_SetResult(interp,
+			"unsigned bignum scans are invalid", TCL_STATIC);
+		goto error;
+	    }
+	    break;
+	    /*
+	     * Bracket terms need special checking
+	     */
+	case '[':
+	    if (flags & (SCAN_LONGER|SCAN_BIG)) {
+		goto invalidFieldSize;
+	    }
+	    if (*format == '\0') {
+		goto badSet;
+	    }
+	    format += Tcl_UtfToUniChar(format, &ch);
+	    if (ch == '^') {
 		if (*format == '\0') {
 		    goto badSet;
 		}
 		format += Tcl_UtfToUniChar(format, &ch);
-		if (ch == '^') {
-		    if (*format == '\0') {
-			goto badSet;
-		    }
-		    format += Tcl_UtfToUniChar(format, &ch);
-		}
-		if (ch == ']') {
-		    if (*format == '\0') {
-			goto badSet;
-		    }
-		    format += Tcl_UtfToUniChar(format, &ch);
+	    }
+	    if (ch == ']') {
+		if (*format == '\0') {
+		    goto badSet;
 		}
-		while (ch != ']') {
-		    if (*format == '\0') {
-			goto badSet;
-		    }
-		    format += Tcl_UtfToUniChar(format, &ch);
+		format += Tcl_UtfToUniChar(format, &ch);
+	    }
+	    while (ch != ']') {
+		if (*format == '\0') {
+		    goto badSet;
 		}
-		break;
-	    badSet:
-		Tcl_SetResult(interp, "unmatched [ in format string",
-			TCL_STATIC);
-		goto error;
-	    default:
+		format += Tcl_UtfToUniChar(format, &ch);
+	    }
+	    break;
+	badSet:
+	    Tcl_SetResult(interp, "unmatched [ in format string",
+		    TCL_STATIC);
+	    goto error;
+	default:
 	    {
 		char buf[TCL_UTF_MAX+1];
 
 		buf[Tcl_UniCharToUtf(ch, buf)] = '\0';
-		Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			"bad scan conversion character \"", buf, "\"", NULL);
+		Tcl_AppendResult(interp, "bad scan conversion character \"",
+			buf, "\"", NULL);
 		goto error;
 	    }
 	}
 	if (!(flags & SCAN_SUPPRESS)) {
 	    if (objIndex >= nspace) {
 		/*
-		 * Expand the nassign buffer.  If we are using XPG specifiers,
-		 * make sure that we grow to a large enough size.  xpgSize is
+		 * Expand the nassign buffer. If we are using XPG specifiers,
+		 * make sure that we grow to a large enough size. xpgSize is
 		 * guaranteed to be at least one larger than objIndex.
 		 */
+
 		value = nspace;
 		if (xpgSize) {
 		    nspace = xpgSize;
 		} else {
-		    nspace += STATIC_LIST_SIZE;
-		}
-		if (nassign == staticAssign) {
-		    nassign = (void *)ckalloc(nspace * sizeof(int));
-		    for (i = 0; i < STATIC_LIST_SIZE; ++i) {
-			nassign[i] = staticAssign[i];
-		    }
-		} else {
-		    nassign = (void *)ckrealloc((void *)nassign,
-			    nspace * sizeof(int));
+		    nspace += 16;	/* formerly STATIC_LIST_SIZE */
 		}
+		nassign = (int *) TclStackRealloc(interp, nassign,
+			nspace * sizeof(int));
 		for (i = value; i < nspace; i++) {
 		    nassign[i] = 0;
 		}
@@ -506,39 +496,39 @@ ValidateFormat(interp, format, numVars, totalSubs)
     }
     for (i = 0; i < numVars; i++) {
 	if (nassign[i] > 1) {
-	    Tcl_SetResult(interp, "variable is assigned by multiple \"%n$\" conversion specifiers", TCL_STATIC);
+	    Tcl_SetResult(interp,
+		    "variable is assigned by multiple \"%n$\" conversion specifiers",
+		    TCL_STATIC);
 	    goto error;
 	} else if (!xpgSize && (nassign[i] == 0)) {
 	    /*
-	     * If the space is empty, and xpgSize is 0 (means XPG wasn't
-	     * used, and/or numVars != 0), then too many vars were given
+	     * If the space is empty, and xpgSize is 0 (means XPG wasn't used,
+	     * and/or numVars != 0), then too many vars were given
 	     */
-	    Tcl_SetResult(interp, "variable is not assigned by any conversion specifiers", TCL_STATIC);
+
+	    Tcl_SetResult(interp,
+		    "variable is not assigned by any conversion specifiers",
+		    TCL_STATIC);
 	    goto error;
 	}
     }
 
-    if (nassign != staticAssign) {
-	ckfree((char *)nassign);
-    }
+    TclStackFree(interp, nassign);
     return TCL_OK;
 
-    badIndex:
+  badIndex:
     if (gotXpg) {
 	Tcl_SetResult(interp, "\"%n$\" argument index out of range",
 		TCL_STATIC);
     } else {
-	Tcl_SetResult(interp, 
+	Tcl_SetResult(interp,
 		"different numbers of variable names and field specifiers",
 		TCL_STATIC);
     }
 
-    error:
-    if (nassign != staticAssign) {
-	ckfree((char *)nassign);
-    }
+  error:
+    TclStackFree(interp, nassign);
     return TCL_ERROR;
-#undef STATIC_LIST_SIZE
 }
 
 /*
@@ -546,8 +536,8 @@ ValidateFormat(interp, format, numVars, totalSubs)
  *
  * Tcl_ScanObjCmd --
  *
- *	This procedure is invoked to process the "scan" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "scan" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -560,35 +550,29 @@ ValidateFormat(interp, format, numVars, totalSubs)
 
 	/* ARGSUSED */
 int
-Tcl_ScanObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;    	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ScanObjCmd(
+    ClientData dummy,    	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
     char *format;
     int numVars, nconversions, totalVars = -1;
     int objIndex, offset, i, result, code;
     long value;
-    char *string, *end, *baseString;
+    CONST char *string, *end, *baseString;
     char op = 0;
-    int base = 0;
-    int underflow = 0;
-    size_t width;
-    long (*fn)() = NULL;
-#ifndef TCL_WIDE_INT_IS_LONG
-    Tcl_WideInt (*lfn)() = NULL;
+    int width, underflow = 0;
     Tcl_WideInt wideValue;
-#endif
     Tcl_UniChar ch, sch;
     Tcl_Obj **objs = NULL, *objPtr = NULL;
     int flags;
-    char buf[513];			  /* Temporary buffer to hold scanned
-					   * number strings before they are
-					   * passed to strtoul. */
+    char buf[513];		/* Temporary buffer to hold scanned number
+				 * strings before they are passed to
+				 * strtoul. */
 
     if (objc < 3) {
-        Tcl_WrongNumArgs(interp, 1, objv,
+	Tcl_WrongNumArgs(interp, 1, objv,
 		"string format ?varName varName ...?");
 	return TCL_ERROR;
     }
@@ -599,7 +583,7 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
     /*
      * Check for errors in the format string.
      */
-    
+
     if (ValidateFormat(interp, format, numVars, &totalVars) == TCL_ERROR) {
 	return TCL_ERROR;
     }
@@ -619,14 +603,15 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
     baseString = string;
 
     /*
-     * Iterate over the format string filling in the result objects until
-     * we reach the end of input, the end of the format string, or there
-     * is a mismatch.
+     * Iterate over the format string filling in the result objects until we
+     * reach the end of input, the end of the format string, or there is a
+     * mismatch.
      */
 
     objIndex = 0;
     nconversions = 0;
     while (*format != '\0') {
+	int parseFlag = TCL_PARSE_NO_WHITESPACE;
 	format += Tcl_UtfToUniChar(format, &ch);
 
 	flags = 0;
@@ -646,9 +631,9 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 	    }
 	    continue;
 	}
-	    
+
 	if (ch != '%') {
-	    literal:
+	literal:
 	    if (*string == '\0') {
 		underflow = 1;
 		goto done;
@@ -666,17 +651,18 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 	}
 
 	/*
-	 * Check for assignment suppression ('*') or an XPG3-style
-	 * assignment ('%n$').
+	 * Check for assignment suppression ('*') or an XPG3-style assignment
+	 * ('%n$').
 	 */
 
 	if (ch == '*') {
 	    flags |= SCAN_SUPPRESS;
 	    format += Tcl_UtfToUniChar(format, &ch);
-	} else if ((ch < 0x80) && isdigit(UCHAR(ch))) { /* INTL: "C" locale. */
-	    value = strtoul(format-1, &end, 10); /* INTL: "C" locale. */
-	    if (*end == '$') {
-		format = end+1;
+	} else if ((ch < 0x80) && isdigit(UCHAR(ch))) {	/* INTL: "C" locale. */
+	    char *formatEnd;
+	    value = strtoul(format-1, &formatEnd, 10);/* INTL: "C" locale. */
+	    if (*formatEnd == '$') {
+		format = formatEnd+1;
 		format += Tcl_UtfToUniChar(format, &ch);
 		objIndex = (int) value - 1;
 	    }
@@ -686,8 +672,8 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 	 * Parse any width specifier.
 	 */
 
-	if ((ch < 0x80) && isdigit(UCHAR(ch))) { /* INTL: "C" locale. */
-	    width = strtoul(format-1, &format, 10); /* INTL: "C" locale. */
+	if ((ch < 0x80) && isdigit(UCHAR(ch))) {	/* INTL: "C" locale. */
+	    width = (int) strtoul(format-1, &format, 10);/* INTL: "C" locale. */
 	    format += Tcl_UtfToUniChar(format, &ch);
 	} else {
 	    width = 0;
@@ -699,6 +685,12 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 
 	switch (ch) {
 	case 'l':
+	    if (*format == 'l') {
+		flags |= SCAN_BIG;
+		format += 1;
+		format += Tcl_UtfToUniChar(format, &ch);
+		break;
+	    }
 	case 'L':
 	    flags |= SCAN_LONGER;
 	    /*
@@ -713,90 +705,70 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 	 */
 
 	switch (ch) {
-	    case 'n':
-		if (!(flags & SCAN_SUPPRESS)) {
-		    objPtr = Tcl_NewIntObj(string - baseString);
-		    Tcl_IncrRefCount(objPtr);
-		    objs[objIndex++] = objPtr;
-		}
-		nconversions++;
-		continue;
+	case 'n':
+	    if (!(flags & SCAN_SUPPRESS)) {
+		objPtr = Tcl_NewIntObj(string - baseString);
+		Tcl_IncrRefCount(objPtr);
+		objs[objIndex++] = objPtr;
+	    }
+	    nconversions++;
+	    continue;
 
-	    case 'd':
-		op = 'i';
-		base = 10;
-		fn = (long (*)())strtol;
-#ifndef TCL_WIDE_INT_IS_LONG
-		lfn = (Tcl_WideInt (*)())strtoll;
-#endif
-		break;
-	    case 'i':
-		op = 'i';
-		base = 0;
-		fn = (long (*)())strtol;
-#ifndef TCL_WIDE_INT_IS_LONG
-		lfn = (Tcl_WideInt (*)())strtoll;
-#endif
-		break;
-	    case 'o':
-		op = 'i';
-		base = 8;
-		fn = (long (*)())strtoul;
-#ifndef TCL_WIDE_INT_IS_LONG
-		lfn = (Tcl_WideInt (*)())strtoull;
-#endif
-		break;
-	    case 'x':
-		op = 'i';
-		base = 16;
-		fn = (long (*)())strtoul;
-#ifndef TCL_WIDE_INT_IS_LONG
-		lfn = (Tcl_WideInt (*)())strtoull;
-#endif
-		break;
-	    case 'u':
-		op = 'i';
-		base = 10;
-		flags |= SCAN_UNSIGNED;
-		fn = (long (*)())strtoul;
-#ifndef TCL_WIDE_INT_IS_LONG
-		lfn = (Tcl_WideInt (*)())strtoull;
-#endif
-		break;
+	case 'd':
+	    op = 'i';
+	    parseFlag |= TCL_PARSE_DECIMAL_ONLY;
+	    break;
+	case 'i':
+	    op = 'i';
+	    parseFlag |= TCL_PARSE_SCAN_PREFIXES;
+	    break;
+	case 'o':
+	    op = 'i';
+	    parseFlag |= TCL_PARSE_OCTAL_ONLY | TCL_PARSE_SCAN_PREFIXES;
+	    break;
+	case 'x':
+	    op = 'i';
+	    parseFlag |= TCL_PARSE_HEXADECIMAL_ONLY;
+	    break;
+	case 'u':
+	    op = 'i';
+	    parseFlag |= TCL_PARSE_DECIMAL_ONLY;
+	    flags |= SCAN_UNSIGNED;
+	    break;
 
-	    case 'f':
-	    case 'e':
-	    case 'g':
-		op = 'f';
-		break;
+	case 'f':
+	case 'e':
+	case 'g':
+	    op = 'f';
+	    break;
 
-	    case 's':
-		op = 's';
-		break;
+	case 's':
+	    op = 's';
+	    break;
 
-	    case 'c':
-		op = 'c';
-		flags |= SCAN_NOSKIP;
-		break;
-	    case '[':
-		op = '[';
-		flags |= SCAN_NOSKIP;
-		break;
+	case 'c':
+	    op = 'c';
+	    flags |= SCAN_NOSKIP;
+	    break;
+	case '[':
+	    op = '[';
+	    flags |= SCAN_NOSKIP;
+	    break;
 	}
 
 	/*
-	 * At this point, we will need additional characters from the
-	 * string to proceed.
+	 * At this point, we will need additional characters from the string
+	 * to proceed.
 	 */
 
 	if (*string == '\0') {
 	    underflow = 1;
 	    goto done;
 	}
-	
+
 	/*
-	 * Skip any leading whitespace at the beginning of a field unless
-	 * the format suppresses this behavior.
+	 * Skip any leading whitespace at the beginning of a field unless the
+	 * format suppresses this behavior.
 	 */
 
 	if (!(flags & SCAN_NOSKIP)) {
@@ -816,373 +788,217 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 	/*
 	 * Perform the requested scanning operation.
 	 */
-	
+
 	switch (op) {
-	    case 's':
-		/*
-		 * Scan a string up to width characters or whitespace.
-		 */
+	case 's':
+	    /*
+	     * Scan a string up to width characters or whitespace.
+	     */
 
-		if (width == 0) {
-		    width = (size_t) ~0;
-		}
-		end = string;
-		while (*end != '\0') {
-		    offset = Tcl_UtfToUniChar(end, &sch);
-		    if (Tcl_UniCharIsSpace(sch)) {
-			break;
-		    }
-		    end += offset;
-		    if (--width == 0) {
-			break;
-		    }
+	    if (width == 0) {
+		width = ~0;
+	    }
+	    end = string;
+	    while (*end != '\0') {
+		offset = Tcl_UtfToUniChar(end, &sch);
+		if (Tcl_UniCharIsSpace(sch)) {
+		    break;
 		}
-		if (!(flags & SCAN_SUPPRESS)) {
-		    objPtr = Tcl_NewStringObj(string, end-string);
-		    Tcl_IncrRefCount(objPtr);
-		    objs[objIndex++] = objPtr;
+		end += offset;
+		if (--width == 0) {
+		    break;
 		}
-		string = end;
-		break;
-
-	    case '[': {
-		CharSet cset;
+	    }
+	    if (!(flags & SCAN_SUPPRESS)) {
+		objPtr = Tcl_NewStringObj(string, end-string);
+		Tcl_IncrRefCount(objPtr);
+		objs[objIndex++] = objPtr;
+	    }
+	    string = end;
+	    break;
 
-		if (width == 0) {
-		    width = (size_t) ~0;
-		}
-		end = string;
+	case '[': {
+	    CharSet cset;
 
-		format = BuildCharSet(&cset, format);
-		while (*end != '\0') {
-		    offset = Tcl_UtfToUniChar(end, &sch);
-		    if (!CharInSet(&cset, (int)sch)) {
-			break;
-		    }
-		    end += offset;
-		    if (--width == 0) {
-			break;
-		    }
-		}
-		ReleaseCharSet(&cset);
+	    if (width == 0) {
+		width = ~0;
+	    }
+	    end = string;
 
-		if (string == end) {
-		    /*
-		     * Nothing matched the range, stop processing
-		     */
-		    goto done;
+	    format = BuildCharSet(&cset, format);
+	    while (*end != '\0') {
+		offset = Tcl_UtfToUniChar(end, &sch);
+		if (!CharInSet(&cset, (int)sch)) {
+		    break;
 		}
-		if (!(flags & SCAN_SUPPRESS)) {
-		    objPtr = Tcl_NewStringObj(string, end-string);
-		    Tcl_IncrRefCount(objPtr);
-		    objs[objIndex++] = objPtr;
+		end += offset;
+		if (--width == 0) {
+		    break;
 		}
-		string = end;
-		
-		break;
 	    }
-	    case 'c':
-		/*
-		 * Scan a single Unicode character.
-		 */
-
-		string += Tcl_UtfToUniChar(string, &sch);
-		if (!(flags & SCAN_SUPPRESS)) {
-		    objPtr = Tcl_NewIntObj((int)sch);
-		    Tcl_IncrRefCount(objPtr);
-		    objs[objIndex++] = objPtr;
-		}
-		break;
+	    ReleaseCharSet(&cset);
 
-	    case 'i':
+	    if (string == end) {
 		/*
-		 * Scan an unsigned or signed integer.
+		 * Nothing matched the range, stop processing.
 		 */
+		goto done;
+	    }
+	    if (!(flags & SCAN_SUPPRESS)) {
+		objPtr = Tcl_NewStringObj(string, end-string);
+		Tcl_IncrRefCount(objPtr);
+		objs[objIndex++] = objPtr;
+	    }
+	    string = end;
 
-		if ((width == 0) || (width > sizeof(buf) - 1)) {
-		    width = sizeof(buf) - 1;
-		}
-		flags |= SCAN_SIGNOK | SCAN_NODIGITS | SCAN_NOZERO;
-		for (end = buf; width > 0; width--) {
-		    switch (*string) {
-			/*
-			 * The 0 digit has special meaning at the beginning of
-			 * a number.  If we are unsure of the base, it
-			 * indicates that we are in base 8 or base 16 (if it is
-			 * followed by an 'x').
-			 *
-			 * 8.1 - 8.3.4 incorrectly handled 0x... base-16
-			 * cases for %x by not reading the 0x as the
-			 * auto-prelude for base-16. [Bug #495213]
-			 */
-			case '0':
-			    if (base == 0) {
-				base = 8;
-				flags |= SCAN_XOK;
-			    }
-			    if (base == 16) {
-				flags |= SCAN_XOK;
-			    }
-			    if (flags & SCAN_NOZERO) {
-				flags &= ~(SCAN_SIGNOK | SCAN_NODIGITS
-					| SCAN_NOZERO);
-			    } else {
-				flags &= ~(SCAN_SIGNOK | SCAN_XOK
-					| SCAN_NODIGITS);
-			    }
-			    goto addToInt;
-
-			case '1': case '2': case '3': case '4':
-			case '5': case '6': case '7':
-			    if (base == 0) {
-				base = 10;
-			    }
-			    flags &= ~(SCAN_SIGNOK | SCAN_XOK | SCAN_NODIGITS);
-			    goto addToInt;
-
-			case '8': case '9':
-			    if (base == 0) {
-				base = 10;
-			    }
-			    if (base <= 8) {
-				break;
-			    }
-			    flags &= ~(SCAN_SIGNOK | SCAN_XOK | SCAN_NODIGITS);
-			    goto addToInt;
-
-			case 'A': case 'B': case 'C':
-			case 'D': case 'E': case 'F': 
-			case 'a': case 'b': case 'c':
-			case 'd': case 'e': case 'f':
-			    if (base <= 10) {
-				break;
-			    }
-			    flags &= ~(SCAN_SIGNOK | SCAN_XOK | SCAN_NODIGITS);
-			    goto addToInt;
-
-			case '+': case '-':
-			    if (flags & SCAN_SIGNOK) {
-				flags &= ~SCAN_SIGNOK;
-				goto addToInt;
-			    }
-			    break;
-
-			case 'x': case 'X':
-			    if ((flags & SCAN_XOK) && (end == buf+1)) {
-				base = 16;
-				flags &= ~SCAN_XOK;
-				goto addToInt;
-			    }
-			    break;
-		    }
-
-		    /*
-		     * We got an illegal character so we are done accumulating.
-		     */
-
-		    break;
+	    break;
+	}
+	case 'c':
+	    /*
+	     * Scan a single Unicode character.
+	     */
 
-		    addToInt:
-		    /*
-		     * Add the character to the temporary buffer.
-		     */
+	    string += Tcl_UtfToUniChar(string, &sch);
+	    if (!(flags & SCAN_SUPPRESS)) {
+		objPtr = Tcl_NewIntObj((int)sch);
+		Tcl_IncrRefCount(objPtr);
+		objs[objIndex++] = objPtr;
+	    }
+	    break;
 
-		    *end++ = *string++;
-		    if (*string == '\0') {
-			break;
+	case 'i':
+	    /*
+	     * Scan an unsigned or signed integer.
+	     */
+	    objPtr = Tcl_NewLongObj(0);
+	    Tcl_IncrRefCount(objPtr);
+	    if (width == 0) {
+		width = ~0;
+	    }
+	    if (TCL_OK != TclParseNumber(NULL, objPtr, NULL, string, width,
+		    &end, TCL_PARSE_INTEGER_ONLY | parseFlag)) {
+		Tcl_DecrRefCount(objPtr);
+		if (width < 0) {
+		    if (*end == '\0') {
+			underflow = 1;
 		    }
-		}
-
-		/*
-		 * Check to see if we need to back up because we only got a
-		 * sign or a trailing x after a 0.
-		 */
-
-		if (flags & SCAN_NODIGITS) {
-		    if (*string == '\0') {
+		} else {
+		    if (end == string + width) {
 			underflow = 1;
 		    }
-		    goto done;
-		} else if (end[-1] == 'x' || end[-1] == 'X') {
-		    end--;
-		    string--;
 		}
-
-
-		/*
-		 * Scan the value from the temporary buffer.  If we are
-		 * returning a large unsigned value, we have to convert it back
-		 * to a string since Tcl only supports signed values.
-		 */
-
-		if (!(flags & SCAN_SUPPRESS)) {
-		    *end = '\0';
-#ifndef TCL_WIDE_INT_IS_LONG
-		    if (flags & SCAN_LONGER) {
-			wideValue = (Tcl_WideInt) (*lfn)(buf, NULL, base);
-			if ((flags & SCAN_UNSIGNED) && (wideValue < 0)) {
-			    /* INTL: ISO digit */
-			    sprintf(buf, "%" TCL_LL_MODIFIER "u",
-				    (Tcl_WideUInt)wideValue);
-			    objPtr = Tcl_NewStringObj(buf, -1);
-			} else {
-			    objPtr = Tcl_NewWideIntObj(wideValue);
-			}
-		    } else {
-#endif /* !TCL_WIDE_INT_IS_LONG */
-			value = (long) (*fn)(buf, NULL, base);
-			if ((flags & SCAN_UNSIGNED) && (value < 0)) {
-			    sprintf(buf, "%lu", value); /* INTL: ISO digit */
-			    objPtr = Tcl_NewStringObj(buf, -1);
-			} else if ((flags & SCAN_LONGER)
-				|| (unsigned long) value > UINT_MAX) {
-			    objPtr = Tcl_NewLongObj(value);
-			} else {
-			    objPtr = Tcl_NewIntObj(value);
-			}
-#ifndef TCL_WIDE_INT_IS_LONG
+		goto done;
+	    }
+	    string = end;
+	    if (flags & SCAN_SUPPRESS) {
+		Tcl_DecrRefCount(objPtr);
+		break;
+	    }
+	    if (flags & SCAN_LONGER) {
+		if (Tcl_GetWideIntFromObj(NULL, objPtr, &wideValue) != TCL_OK) {
+		    wideValue = ~(Tcl_WideUInt)0 >> 1;	/* WIDE_MAX */
+		    if (TclGetString(objPtr)[0] == '-') {
+			wideValue++;	/* WIDE_MAX + 1 = WIDE_MIN */
 		    }
-#endif
-		    Tcl_IncrRefCount(objPtr);
-		    objs[objIndex++] = objPtr;
 		}
-
-		break;
-
-	    case 'f':
-		/*
-		 * Scan a floating point number
-		 */
-
-		if ((width == 0) || (width > sizeof(buf) - 1)) {
-		    width = sizeof(buf) - 1;
+		if ((flags & SCAN_UNSIGNED) && (wideValue < 0)) {
+		    sprintf(buf, "%" TCL_LL_MODIFIER "u",
+			    (Tcl_WideUInt)wideValue);
+		    Tcl_SetStringObj(objPtr, buf, -1);
+		} else {
+		    Tcl_SetWideIntObj(objPtr, wideValue);
 		}
-		flags &= ~SCAN_LONGER;
-		flags |= SCAN_SIGNOK | SCAN_NODIGITS | SCAN_PTOK | SCAN_EXPOK;
-		for (end = buf; width > 0; width--) {
-		    switch (*string) {
-			case '0': case '1': case '2': case '3':
-			case '4': case '5': case '6': case '7':
-			case '8': case '9':
-			    flags &= ~(SCAN_SIGNOK | SCAN_NODIGITS);
-			    goto addToFloat;
-			case '+': case '-':
-			    if (flags & SCAN_SIGNOK) {
-				flags &= ~SCAN_SIGNOK;
-				goto addToFloat;
-			    }
-			    break;
-			case '.':
-			    if (flags & SCAN_PTOK) {
-				flags &= ~(SCAN_SIGNOK | SCAN_PTOK);
-				goto addToFloat;
-			    }
-			    break;
-			case 'e': case 'E':
-			    /*
-			     * An exponent is not allowed until there has
-			     * been at least one digit.
-			     */
-
-			    if ((flags & (SCAN_NODIGITS | SCAN_EXPOK))
-				    == SCAN_EXPOK) {
-				flags = (flags & ~(SCAN_EXPOK|SCAN_PTOK))
-				    | SCAN_SIGNOK | SCAN_NODIGITS;
-				goto addToFloat;
-			    }
-			    break;
-		    }
-
-		    /*
-		     * We got an illegal character so we are done accumulating.
-		     */
-
-		    break;
-
-		    addToFloat:
-		    /*
-		     * Add the character to the temporary buffer.
-		     */
-
-		    *end++ = *string++;
-		    if (*string == '\0') {
-			break;
+	    } else if (!(flags & SCAN_BIG)) {
+		if (TclGetLongFromObj(NULL, objPtr, &value) != TCL_OK) {
+		    if (TclGetString(objPtr)[0] == '-') {
+			value = LONG_MIN;
+		    } else {
+			value = LONG_MAX;
 		    }
 		}
+		if ((flags & SCAN_UNSIGNED) && (value < 0)) {
+		    sprintf(buf, "%lu", value);	/* INTL: ISO digit */
+		    Tcl_SetStringObj(objPtr, buf, -1);
+		} else {
+		    Tcl_SetLongObj(objPtr, value);
+		}
+	    }
+	    objs[objIndex++] = objPtr;
+	    break;
 
-		/*
-		 * Check to see if we need to back up because we saw a
-		 * trailing 'e' or sign.
-		 */
+	case 'f':
+	    /*
+	     * Scan a floating point number
+	     */
 
-		if (flags & SCAN_NODIGITS) {
-		    if (flags & SCAN_EXPOK) {
-			/*
-			 * There were no digits at all so scanning has
-			 * failed and we are done.
-			 */
-			if (*string == '\0') {
-			    underflow = 1;
-			}
-			goto done;
+	    objPtr = Tcl_NewDoubleObj(0.0);
+	    Tcl_IncrRefCount(objPtr);
+	    if (width == 0) {
+		width = ~0;
+	    }
+	    if (TCL_OK != TclParseNumber(NULL, objPtr, NULL, string, width,
+		    &end, TCL_PARSE_DECIMAL_ONLY | TCL_PARSE_NO_WHITESPACE)) {
+		Tcl_DecrRefCount(objPtr);
+		if (width < 0) {
+		    if (*end == '\0') {
+			underflow = 1;
 		    }
-
-		    /*
-		     * We got a bad exponent ('e' and maybe a sign).
-		     */
-
-		    end--;
-		    string--;
-		    if (*end != 'e' && *end != 'E') {
-			end--;
-			string--;
+		} else {
+		    if (end == string + width) {
+			underflow = 1;
 		    }
 		}
-
-		/*
-		 * Scan the value from the temporary buffer.
-		 */
-
-		if (!(flags & SCAN_SUPPRESS)) {
-		    double dvalue;
-		    *end = '\0';
-		    dvalue = strtod(buf, NULL);
-		    objPtr = Tcl_NewDoubleObj(dvalue);
-		    Tcl_IncrRefCount(objPtr);
-		    objs[objIndex++] = objPtr;
+		goto done;
+	    } else if (flags & SCAN_SUPPRESS) {
+		Tcl_DecrRefCount(objPtr);
+		string = end;
+	    } else {
+		double dvalue;
+		if (Tcl_GetDoubleFromObj(NULL, objPtr, &dvalue) != TCL_OK) {
+#ifdef ACCEPT_NAN
+		    if (objPtr->typePtr == &tclDoubleType) {
+			dvalue = objPtr->internalRep.doubleValue;
+		    } else
+#endif
+		    {
+			Tcl_DecrRefCount(objPtr);
+			goto done;
+		    }
 		}
-		break;
+		Tcl_SetDoubleObj(objPtr, dvalue);
+		objs[objIndex++] = objPtr;
+		string = end;
+	    }
 	}
 	nconversions++;
     }
 
-    done:
+  done:
     result = 0;
     code = TCL_OK;
 
     if (numVars) {
 	/*
-	 * In this case, variables were specified (classic scan)
+	 * In this case, variables were specified (classic scan).
 	 */
+
 	for (i = 0; i < totalVars; i++) {
-	    if (objs[i] != NULL) {
-		Tcl_Obj *tmpPtr;
-		
-		result++;
-		tmpPtr = Tcl_ObjSetVar2(interp, objv[i+3], NULL, objs[i], 0);
-		Tcl_DecrRefCount(objs[i]);
-		if (tmpPtr == NULL) {
-		    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-			    "couldn't set variable \"",
-			    Tcl_GetString(objv[i+3]), "\"", (char *) NULL);
-		    code = TCL_ERROR;
-		}
+	    if (objs[i] == NULL) {
+		continue;
+	    }
+	    result++;
+	    if (Tcl_ObjSetVar2(interp, objv[i+3], NULL, objs[i], 0) == NULL) {
+		Tcl_AppendResult(interp, "couldn't set variable \"",
+			TclGetString(objv[i+3]), "\"", NULL);
+		code = TCL_ERROR;
 	    }
+	    Tcl_DecrRefCount(objs[i]);
 	}
     } else {
 	/*
 	 * Here no vars were specified, we want a list returned (inline scan)
 	 */
+
 	objPtr = Tcl_NewObj();
 	for (i = 0; i < totalVars; i++) {
 	    if (objs[i] != NULL) {
@@ -1190,9 +1006,10 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
 		Tcl_DecrRefCount(objs[i]);
 	    } else {
 		/*
-		 * More %-specifiers than matching chars, so we
-		 * just spit out empty strings for these
+		 * More %-specifiers than matching chars, so we just spit out
+		 * empty strings for these.
 		 */
+
 		Tcl_ListObjAppendElement(NULL, objPtr, Tcl_NewObj());
 	    }
 	}
@@ -1218,3 +1035,11 @@ Tcl_ScanObjCmd(dummy, interp, objc, objv)
     }
     return code;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclStrToD.c b/generic/tclStrToD.c
new file mode 100755
index 0000000..76adf75
--- /dev/null
+++ b/generic/tclStrToD.c
@@ -0,0 +1,4991 @@
+/*
+ *----------------------------------------------------------------------
+ *
+ * tclStrToD.c --
+ *
+ *	This file contains a collection of procedures for managing conversions
+ *	to/from floating-point in Tcl. They include TclParseNumber, which
+ *	parses numbers from strings; TclDoubleDigits, which formats numbers
+ *	into strings of digits, and procedures for interconversion among
+ *	'double' and 'mp_int' types.
+ *
+ * Copyright (c) 2005 by Kevin B. Kenny. All rights reserved.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *----------------------------------------------------------------------
+ */
+
+#include "tclInt.h"
+#include "tommath.h"
+#include <math.h>
+
+/*
+ * Define KILL_OCTAL to suppress interpretation of numbers with leading zero
+ * as octal. (Ceterum censeo: numeros octonarios delendos esse.)
+ */
+
+#undef	KILL_OCTAL
+
+/*
+ * This code supports (at least hypothetically), IBM, Cray, VAX and IEEE-754
+ * floating point; of these, only IEEE-754 can represent NaN. IEEE-754 can be
+ * uniquely determined by radix and by the widths of significand and exponent.
+ */
+
+#if (FLT_RADIX == 2) && (DBL_MANT_DIG == 53) && (DBL_MAX_EXP == 1024)
+#   define IEEE_FLOATING_POINT
+#endif
+
+/*
+ * gcc on x86 needs access to rounding controls, because of a questionable
+ * feature where it retains intermediate results as IEEE 'long double' values
+ * somewhat unpredictably. It is tempting to include fpu_control.h, but that
+ * file exists only on Linux; it is missing on Cygwin and MinGW. Most gcc-isms
+ * and ix86-isms are factored out here.
+ */
+
+#if defined(__GNUC__) && defined(__i386)
+typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
+#define _FPU_GETCW(cw) __asm__ __volatile__ ("fnstcw %0" : "=m" (*&cw))
+#define _FPU_SETCW(cw) __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw))
+#   define FPU_IEEE_ROUNDING	0x027f
+#   define ADJUST_FPU_CONTROL_WORD
+#endif
+
+/* Sun ProC needs sunmath for rounding control on x86 like gcc above.
+ *
+ *
+ */
+#if defined(__sun) && defined(__i386) && !defined(__GNUC__)
+#include <sunmath.h>
+#endif
+
+/*
+ * MIPS floating-point units need special settings in control registers
+ * to use gradual underflow as we expect.  This fix is for the MIPSpro
+ * compiler.  
+ */
+#if defined(__sgi) && defined(_COMPILER_VERSION)
+#include <sys/fpu.h>
+#endif
+/*
+ * HP's PA_RISC architecture uses 7ff4000000000000 to represent a quiet NaN.
+ * Everyone else uses 7ff8000000000000. (Why, HP, why?)
+ */
+
+#ifdef __hppa
+#   define NAN_START 0x7ff4
+#   define NAN_MASK (((Tcl_WideUInt) 1) << 50)
+#else
+#   define NAN_START 0x7ff8
+#   define NAN_MASK (((Tcl_WideUInt) 1) << 51)
+#endif
+
+/*
+ * Constants used by this file (most of which are only ever calculated at
+ * runtime).
+ */
+
+/* Magic constants */
+
+#define LOG10_2 0.3010299956639812
+#define TWO_OVER_3LOG10 0.28952965460216784
+#define LOG10_3HALVES_PLUS_FUDGE 0.1760912590558
+
+/* Definitions of the parts of an IEEE754-format floating point number */
+
+#define SIGN_BIT 		0x80000000
+				/* Mask for the sign bit in the first
+				 * word of a double */
+#define EXP_MASK	     	0x7ff00000
+				/* Mask for the exponent field in the
+				 * first word of a double */
+#define EXP_SHIFT		20
+				/* Shift count to make the exponent an 
+				 * integer */
+#define HIDDEN_BIT		(((Tcl_WideUInt) 0x00100000) << 32)
+				/* Hidden 1 bit for the significand */
+#define HI_ORDER_SIG_MASK	0x000fffff
+				/* Mask for the high-order part of the
+				 * significand in the first word of a
+				 * double */
+#define SIG_MASK		(((Tcl_WideUInt) HI_ORDER_SIG_MASK << 32) \
+				 | 0xffffffff)
+				/* Mask for the 52-bit significand. */
+#define FP_PRECISION		53
+				/* Number of bits of significand plus the
+				 * hidden bit */
+#define EXPONENT_BIAS		0x3ff
+				/* Bias of the exponent 0 */
+
+/* Derived quantities */
+
+#define TEN_PMAX		22
+				/* floor(FP_PRECISION*log(2)/log(5)) */
+#define QUICK_MAX		14
+				/* floor((FP_PRECISION-1)*log(2)/log(10)) - 1 */
+#define BLETCH			0x10
+				/* Highest power of two that is greater than
+				 * DBL_MAX_10_EXP, divided by 16 */
+#define DIGIT_GROUP		8
+				/* floor(DIGIT_BIT*log(2)/log(10)) */
+
+/* Union used to dismantle floating point numbers. */
+
+typedef union Double {
+    struct {
+#ifdef WORDS_BIGENDIAN
+	int word0;
+	int word1;
+#else
+	int word1;
+	int word0;
+#endif
+    } w;
+    double d;
+    Tcl_WideUInt q;
+} Double;
+
+static int maxpow10_wide;	/* The powers of ten that can be represented
+				 * exactly as wide integers. */
+static Tcl_WideUInt *pow10_wide;
+#define MAXPOW	22
+static double pow10vals[MAXPOW+1];
+				/* The powers of ten that can be represented
+				 * exactly as IEEE754 doubles. */
+static int mmaxpow;		/* Largest power of ten that can be
+				 * represented exactly in a 'double'. */
+static int log10_DIGIT_MAX;	/* The number of decimal digits that fit in an
+				 * mp_digit. */
+static int log2FLT_RADIX;	/* Logarithm of the floating point radix. */
+static int mantBits;		/* Number of bits in a double's significand */
+static mp_int pow5[9];		/* Table of powers of 5**(2**n), up to
+				 * 5**256 */
+static double tiny = 0.0;		/* The smallest representable double */
+static int maxDigits;		/* The maximum number of digits to the left of
+				 * the decimal point of a double. */
+static int minDigits;		/* The maximum number of digits to the right
+				 * of the decimal point in a double. */
+static const double pow_10_2_n[] = {	/* Inexact higher powers of ten. */
+    1.0,
+    100.0,
+    10000.0,
+    1.0e+8,
+    1.0e+16,
+    1.0e+32,
+    1.0e+64,
+    1.0e+128,
+    1.0e+256
+};
+
+static int n770_fp;		/* Flag is 1 on Nokia N770 floating point.
+				 * Nokia's floating point has the words
+				 * reversed: if big-endian is 7654 3210,
+				 * and little-endian is       0123 4567,
+				 * then Nokia's FP is         4567 0123;
+				 * little-endian within the 32-bit words
+				 * but big-endian between them. */
+
+/* Table of powers of 5 that are small enough to fit in an mp_digit. */
+
+static const mp_digit dpow5[13] = {
+               1,              5,             25,            125,
+             625,           3125,          15625,          78125,
+          390625,        1953125,        9765625,       48828125,
+       244140625
+};
+
+/* Table of powers: pow5_13[n] = 5**(13*2**(n+1)) */
+static mp_int pow5_13[5];	/* Table of powers: 5**13, 5**26, 5**52,
+				 * 5**104, 5**208 */
+static const double tens[] = {
+    1e00, 1e01, 1e02, 1e03, 1e04, 1e05, 1e06, 1e07, 1e08, 1e09,
+    1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
+    1e20, 1e21, 1e22
+};
+
+static const int itens [] = {
+    1,
+    10,
+    100,
+    1000,
+    10000,
+    100000,
+    1000000,
+    10000000,
+    100000000
+};
+
+static const double bigtens[] = {
+    1e016, 1e032, 1e064, 1e128, 1e256
+};
+#define N_BIGTENS 5
+
+static const int log2pow5[27] = {
+    01,  3,  5,  7, 10, 12, 14, 17, 19, 21,
+    24, 26, 28, 31, 33, 35, 38, 40, 42, 45,
+    47, 49, 52, 54, 56, 59, 61
+};
+#define N_LOG2POW5 27
+
+static const Tcl_WideUInt wuipow5[27] = {
+    (Tcl_WideUInt) 1,		/* 5**0 */
+    (Tcl_WideUInt) 5,
+    (Tcl_WideUInt) 25,
+    (Tcl_WideUInt) 125,
+    (Tcl_WideUInt) 625,
+    (Tcl_WideUInt) 3125,	/* 5**5 */
+    (Tcl_WideUInt) 3125*5,
+    (Tcl_WideUInt) 3125*25,
+    (Tcl_WideUInt) 3125*125,
+    (Tcl_WideUInt) 3125*625,
+    (Tcl_WideUInt) 3125*3125,	/* 5**10 */
+    (Tcl_WideUInt) 3125*3125*5,
+    (Tcl_WideUInt) 3125*3125*25,
+    (Tcl_WideUInt) 3125*3125*125,
+    (Tcl_WideUInt) 3125*3125*625,
+    (Tcl_WideUInt) 3125*3125*3125, /* 5**15 */
+    (Tcl_WideUInt) 3125*3125*3125*5,
+    (Tcl_WideUInt) 3125*3125*3125*25,
+    (Tcl_WideUInt) 3125*3125*3125*125,
+    (Tcl_WideUInt) 3125*3125*3125*625,
+    (Tcl_WideUInt) 3125*3125*3125*3125,	/* 5**20 */
+    (Tcl_WideUInt) 3125*3125*3125*3125*5,
+    (Tcl_WideUInt) 3125*3125*3125*3125*25,
+    (Tcl_WideUInt) 3125*3125*3125*3125*125,
+    (Tcl_WideUInt) 3125*3125*3125*3125*625,
+    (Tcl_WideUInt) 3125*3125*3125*3125*3125,  /* 5**25 */
+    (Tcl_WideUInt) 3125*3125*3125*3125*3125*5 /* 5**26 */
+};
+
+/*
+ * Static functions defined in this file.
+ */
+
+static int		AccumulateDecimalDigit(unsigned, int, 
+			    Tcl_WideUInt *, mp_int *, int);
+static double		MakeHighPrecisionDouble(int signum,
+			    mp_int *significand, int nSigDigs, int exponent);
+static double		MakeLowPrecisionDouble(int signum,
+			    Tcl_WideUInt significand, int nSigDigs,
+			    int exponent);
+static double		MakeNaN(int signum, Tcl_WideUInt tag);
+static double		RefineApproximation(double approx,
+			    mp_int *exactSignificand, int exponent);
+static void		MulPow5(mp_int*, unsigned, mp_int*);
+static int 		NormalizeRightward(Tcl_WideUInt*);
+static int		RequiredPrecision(Tcl_WideUInt);
+static void		DoubleToExpAndSig(double, Tcl_WideUInt*, int*, int*);
+static void		TakeAbsoluteValue(Double*, int*);
+static char*		FormatInfAndNaN(Double*, int*, char**);
+static char*		FormatZero(int*, char**);
+static int		ApproximateLog10(Tcl_WideUInt, int, int);
+static int		BetterLog10(double, int, int*);
+static void		ComputeScale(int, int, int*, int*, int*, int*);
+static void		SetPrecisionLimits(int, int, int*, int*, int*, int*);
+static char*		BumpUp(char*, char*, int*);
+static int		AdjustRange(double*, int);
+static char*		ShorteningQuickFormat(double, int, int, double, 
+			    char*, int*);
+static char*		StrictQuickFormat(double, int, int, double,
+			    char*, int*);
+static char*		QuickConversion(double, int, int, int, int, int, int,
+			    int*, char**);
+static void		CastOutPowersOf2(int*, int*, int*);
+static char*		ShorteningInt64Conversion(Double*, int, Tcl_WideUInt,
+			    int, int, int, int, int, int, int, int, int,
+			    int, int, int*, char**);
+static char*		StrictInt64Conversion(Double*, int, Tcl_WideUInt,
+			    int, int, int, int, int, int,
+			    int, int, int*, char**);
+static int		ShouldBankerRoundUpPowD(mp_int*, int, int);
+static int		ShouldBankerRoundUpToNextPowD(mp_int*, mp_int*,
+			    int, int, int, mp_int*);
+static char*		ShorteningBignumConversionPowD(Double* dPtr, 
+			    int convType, Tcl_WideUInt bw, int b2, int b5,
+			    int m2plus, int m2minus, int m5,
+			    int sd, int k, int len, 
+			    int ilim, int ilim1, int* decpt,
+			    char** endPtr);
+static char*		StrictBignumConversionPowD(Double* dPtr, int convType,
+			    Tcl_WideUInt bw, int b2, int b5,
+			    int sd, int k, int len, 
+			    int ilim, int ilim1, int* decpt,
+			    char** endPtr);
+static int		ShouldBankerRoundUp(mp_int*, mp_int*, int);
+static int		ShouldBankerRoundUpToNext(mp_int*, mp_int*, mp_int*,
+			    int, int, mp_int*);
+static char*		ShorteningBignumConversion(Double* dPtr, int convType,
+			    Tcl_WideUInt bw, int b2,
+			    int m2plus, int m2minus,
+			    int s2, int s5, int k, int len, 
+			    int ilim, int ilim1, int* decpt,
+			    char** endPtr);
+static char*		StrictBignumConversion(Double* dPtr, int convType,
+			    Tcl_WideUInt bw, int b2,
+			    int s2, int s5, int k, int len, 
+			    int ilim, int ilim1, int* decpt,
+			    char** endPtr);
+static double		BignumToBiasedFrExp(mp_int *big, int *machexp);
+static double		Pow10TimesFrExp(int exponent, double fraction,
+			    int *machexp);
+static double		SafeLdExp(double fraction, int exponent);
+static Tcl_WideUInt	Nokia770Twiddle(Tcl_WideUInt w);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclParseNumber --
+ *
+ *	Scans bytes, interpreted as characters in Tcl's internal encoding, and
+ *	parses the longest prefix that is the string representation of a
+ *	number in a format recognized by Tcl.
+ *
+ *	The arguments bytes, numBytes, and objPtr are the inputs which
+ *	determine the string to be parsed. If bytes is non-NULL, it points to
+ *	the first byte to be scanned. If bytes is NULL, then objPtr must be
+ *	non-NULL, and the string representation of objPtr will be scanned
+ *	(generated first, if necessary). The numBytes argument determines the
+ *	number of bytes to be scanned. If numBytes is negative, the first NUL
+ *	byte encountered will terminate the scan. If numBytes is non-negative,
+ *	then no more than numBytes bytes will be scanned.
+ *
+ *	The argument flags is an input that controls the numeric formats
+ *	recognized by the parser. The flag bits are:
+ *
+ *	- TCL_PARSE_INTEGER_ONLY:	accept only integer values; reject
+ *		strings that denote floating point values (or accept only the
+ *		leading portion of them that are integer values).
+ *	- TCL_PARSE_SCAN_PREFIXES:	ignore the prefixes 0b and 0o that are
+ *		not part of the [scan] command's vocabulary. Use only in
+ *		combination with TCL_PARSE_INTEGER_ONLY.
+ * 	- TCL_PARSE_OCTAL_ONLY:		parse only in the octal format, whether
+ *		or not a prefix is present that would lead to octal parsing.
+ *		Use only in combination with TCL_PARSE_INTEGER_ONLY.
+ * 	- TCL_PARSE_HEXADECIMAL_ONLY:	parse only in the hexadecimal format,
+ *		whether or not a prefix is present that would lead to
+ *		hexadecimal parsing. Use only in combination with
+ *		TCL_PARSE_INTEGER_ONLY.
+ * 	- TCL_PARSE_DECIMAL_ONLY:	parse only in the decimal format, no
+ *		matter whether a 0 prefix would normally force a different
+ *		base.
+ *	- TCL_PARSE_NO_WHITESPACE:	reject any leading/trailing whitespace
+ *
+ *	The arguments interp and expected are inputs that control error
+ *	message generation. If interp is NULL, no error message will be
+ *	generated. If interp is non-NULL, then expected must also be non-NULL.
+ *	When TCL_ERROR is returned, an error message will be left in the
+ *	result of interp, and the expected argument will appear in the error
+ *	message as the thing TclParseNumber expected, but failed to find in
+ *	the string.
+ *
+ *	The arguments objPtr and endPtrPtr as well as the return code are the
+ *	outputs.
+ *
+ *	When the parser cannot find any prefix of the string that matches a
+ *	format it is looking for, TCL_ERROR is returned and an error message
+ *	may be generated and returned as described above. The contents of
+ *	objPtr will not be changed. If endPtrPtr is non-NULL, a pointer to the
+ *	character in the string that terminated the scan will be written to
+ *	*endPtrPtr.
+ *
+ *	When the parser determines that the entire string matches a format it
+ *	is looking for, TCL_OK is returned, and if objPtr is non-NULL, then
+ *	the internal rep and Tcl_ObjType of objPtr are set to the "canonical"
+ *	numeric value that matches the scanned string. If endPtrPtr is not
+ *	NULL, a pointer to the end of the string will be written to *endPtrPtr
+ *	(that is, either bytes+numBytes or a pointer to a terminating NUL
+ *	byte).
+ *
+ *	When the parser determines that a partial string matches a format it
+ *	is looking for, the value of endPtrPtr determines what happens:
+ *
+ *	- If endPtrPtr is NULL, then TCL_ERROR is returned, with error message
+ *		generation as above.
+ *
+ *	- If endPtrPtr is non-NULL, then TCL_OK is returned and objPtr
+ *		internals are set as above. Also, a pointer to the first
+ *		character following the parsed numeric string is written to
+ *		*endPtrPtr.
+ *
+ *	In some cases where the string being scanned is the string rep of
+ *	objPtr, this routine can leave objPtr in an inconsistent state where
+ *	its string rep and its internal rep do not agree. In these cases the
+ *	internal rep will be in agreement with only some substring of the
+ *	string rep. This might happen if the caller passes in a non-NULL bytes
+ *	value that points somewhere into the string rep. It might happen if
+ *	the caller passes in a numBytes value that limits the scan to only a
+ *	prefix of the string rep. Or it might happen if a non-NULL value of
+ *	endPtrPtr permits a TCL_OK return from only a partial string match. It
+ *	is the responsibility of the caller to detect and correct such
+ *	inconsistencies when they can and do arise.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	The string representaton of objPtr may be generated.
+ *
+ *	The internal representation and Tcl_ObjType of objPtr may be changed.
+ *	This may involve allocation and/or freeing of memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclParseNumber(
+    Tcl_Interp *interp,		/* Used for error reporting. May be NULL. */
+    Tcl_Obj *objPtr,		/* Object to receive the internal rep. */
+    const char *expected,	/* Description of the type of number the
+				 * caller expects to be able to parse
+				 * ("integer", "boolean value", etc.). */
+    const char *bytes,		/* Pointer to the start of the string to
+				 * scan. */
+    int numBytes,		/* Maximum number of bytes to scan, see
+				 * above. */
+    const char **endPtrPtr,	/* Place to store pointer to the character
+				 * that terminated the scan. */
+    int flags)			/* Flags governing the parse. */
+{
+    enum State {
+	INITIAL, SIGNUM, ZERO, ZERO_X,
+	ZERO_O, ZERO_B, BINARY,
+	HEXADECIMAL, OCTAL, BAD_OCTAL, DECIMAL,
+	LEADING_RADIX_POINT, FRACTION,
+	EXPONENT_START, EXPONENT_SIGNUM, EXPONENT,
+	sI, sIN, sINF, sINFI, sINFIN, sINFINI, sINFINIT, sINFINITY
+#ifdef IEEE_FLOATING_POINT
+	, sN, sNA, sNAN, sNANPAREN, sNANHEX, sNANFINISH
+#endif
+    } state = INITIAL;
+    enum State acceptState = INITIAL;
+
+    int signum = 0;		/* Sign of the number being parsed */
+    Tcl_WideUInt significandWide = 0;
+				/* Significand of the number being parsed (if
+				 * no overflow) */
+    mp_int significandBig;	/* Significand of the number being parsed (if
+				 * it overflows significandWide) */
+    int significandOverflow = 0;/* Flag==1 iff significandBig is used */
+    Tcl_WideUInt octalSignificandWide = 0;
+				/* Significand of an octal number; needed
+				 * because we don't know whether a number with
+				 * a leading zero is octal or decimal until
+				 * we've scanned forward to a '.' or 'e' */
+    mp_int octalSignificandBig;	/* Significand of octal number once
+				 * octalSignificandWide overflows */
+    int octalSignificandOverflow = 0;
+				/* Flag==1 if octalSignificandBig is used */
+    int numSigDigs = 0;		/* Number of significant digits in the decimal
+				 * significand */
+    int numTrailZeros = 0;	/* Number of trailing zeroes at the current
+				 * point in the parse. */
+    int numDigitsAfterDp = 0;	/* Number of digits scanned after the decimal
+				 * point */
+    int exponentSignum = 0;	/* Signum of the exponent of a floating point
+				 * number */
+    long exponent = 0;		/* Exponent of a floating point number */
+    const char *p;		/* Pointer to next character to scan */
+    size_t len;			/* Number of characters remaining after p */
+    const char *acceptPoint;	/* Pointer to position after last character in
+				 * an acceptable number */
+    size_t acceptLen;		/* Number of characters following that
+				 * point. */
+    int status = TCL_OK;	/* Status to return to caller */
+    char d = 0;			/* Last hexadecimal digit scanned; initialized
+				 * to avoid a compiler warning. */
+    int shift = 0;		/* Amount to shift when accumulating binary */
+    int explicitOctal = 0;
+
+#define ALL_BITS	(~(Tcl_WideUInt)0)
+#define MOST_BITS	(ALL_BITS >> 1)
+
+    /*
+     * Initialize bytes to start of the object's string rep if the caller
+     * didn't pass anything else.
+     */
+
+    if (bytes == NULL) {
+	bytes = TclGetString(objPtr);
+    }
+
+    p = bytes;
+    len = numBytes;
+    acceptPoint = p;
+    acceptLen = len;
+    while (1) {
+	char c = len ? *p : '\0';
+	switch (state) {
+
+	case INITIAL:
+	    /*
+	     * Initial state. Acceptable characters are +, -, digits, period,
+	     * I, N, and whitespace.
+	     */
+
+	    if (TclIsSpaceProc(c)) {
+		if (flags & TCL_PARSE_NO_WHITESPACE) {
+		    goto endgame;
+		}
+		break;
+	    } else if (c == '+') {
+		state = SIGNUM;
+		break;
+	    } else if (c == '-') {
+		signum = 1;
+		state = SIGNUM;
+		break;
+	    }
+	    /* FALLTHROUGH */
+
+	case SIGNUM:
+	    /*
+	     * Scanned a leading + or -. Acceptable characters are digits,
+	     * period, I, and N.
+	     */
+
+	    if (c == '0') {
+		if (flags & TCL_PARSE_DECIMAL_ONLY) {
+		    state = DECIMAL;
+		} else {
+		    state = ZERO;
+		}
+		break;
+	    } else if (flags & TCL_PARSE_HEXADECIMAL_ONLY) {
+		goto zerox;
+	    } else if (flags & TCL_PARSE_OCTAL_ONLY) {
+		goto zeroo;
+	    } else if (isdigit(UCHAR(c))) {
+		significandWide = c - '0';
+		numSigDigs = 1;
+		state = DECIMAL;
+		break;
+	    } else if (flags & TCL_PARSE_INTEGER_ONLY) {
+		goto endgame;
+	    } else if (c == '.') {
+		state = LEADING_RADIX_POINT;
+		break;
+	    } else if (c == 'I' || c == 'i') {
+		state = sI;
+		break;
+#ifdef IEEE_FLOATING_POINT
+	    } else if (c == 'N' || c == 'n') {
+		state = sN;
+		break;
+#endif
+	    }
+	    goto endgame;
+
+	case ZERO:
+	    /*
+	     * Scanned a leading zero (perhaps with a + or -). Acceptable
+	     * inputs are digits, period, X, b, and E. If 8 or 9 is encountered,
+	     * the number can't be octal. This state and the OCTAL state
+	     * differ only in whether they recognize 'X' and 'b'.
+	     */
+
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    if (c == 'x' || c == 'X') {
+		state = ZERO_X;
+		break;
+	    }
+	    if (flags & TCL_PARSE_HEXADECIMAL_ONLY) {
+		goto zerox;
+	    }
+	    if (flags & TCL_PARSE_SCAN_PREFIXES) {
+		goto zeroo;
+	    }
+	    if (c == 'b' || c == 'B') {
+		state = ZERO_B;
+		break;
+	    }
+	    if (c == 'o' || c == 'O') {
+		explicitOctal = 1;
+		state = ZERO_O;
+		break;
+	    }
+#ifdef KILL_OCTAL
+	    goto decimal;
+#endif
+	    /* FALLTHROUGH */
+
+	case OCTAL:
+	    /*
+	     * Scanned an optional + or -, followed by a string of octal
+	     * digits. Acceptable inputs are more digits, period, or E. If 8
+	     * or 9 is encountered, commit to floating point.
+	     */
+
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    /* FALLTHROUGH */
+	case ZERO_O:
+	zeroo:
+	    if (c == '0') {
+		numTrailZeros++;
+		state = OCTAL;
+		break;
+	    } else if (c >= '1' && c <= '7') {
+		if (objPtr != NULL) {
+		    shift = 3 * (numTrailZeros + 1);
+		    significandOverflow = AccumulateDecimalDigit(
+			    (unsigned)(c-'0'), numTrailZeros,
+			    &significandWide, &significandBig,
+			    significandOverflow);
+
+		    if (!octalSignificandOverflow) {
+			/*
+			 * Shifting by more bits than are in the value being
+			 * shifted is at least de facto nonportable. Check for
+			 * too large shifts first.
+			 */
+
+			if ((octalSignificandWide != 0)
+				&& (((size_t)shift >=
+					CHAR_BIT*sizeof(Tcl_WideUInt))
+				|| (octalSignificandWide >
+					(~(Tcl_WideUInt)0 >> shift)))) {
+			    octalSignificandOverflow = 1;
+			    TclBNInitBignumFromWideUInt(&octalSignificandBig,
+				    octalSignificandWide);
+			}
+		    }
+		    if (!octalSignificandOverflow) {
+			octalSignificandWide =
+				(octalSignificandWide << shift) + (c - '0');
+		    } else {
+			mp_mul_2d(&octalSignificandBig, shift,
+				&octalSignificandBig);
+			mp_add_d(&octalSignificandBig, (mp_digit)(c - '0'),
+				&octalSignificandBig);
+		    }
+		}
+		if (numSigDigs != 0) {
+		    numSigDigs += numTrailZeros+1;
+		} else {
+		    numSigDigs = 1;
+		}
+		numTrailZeros = 0;
+		state = OCTAL;
+		break;
+	    }
+	    /* FALLTHROUGH */
+
+	case BAD_OCTAL:
+	    if (explicitOctal) {
+		/*
+		 * No forgiveness for bad digits in explicitly octal numbers.
+		 */
+
+		goto endgame;
+	    }
+	    if (flags & TCL_PARSE_INTEGER_ONLY) {
+		/*
+		 * No seeking floating point when parsing only integer.
+		 */
+
+		goto endgame;
+	    }
+#ifndef KILL_OCTAL
+
+	    /*
+	     * Scanned a number with a leading zero that contains an 8, 9,
+	     * radix point or E. This is an invalid octal number, but might
+	     * still be floating point.
+	     */
+
+	    if (c == '0') {
+		numTrailZeros++;
+		state = BAD_OCTAL;
+		break;
+	    } else if (isdigit(UCHAR(c))) {
+		if (objPtr != NULL) {
+		    significandOverflow = AccumulateDecimalDigit(
+			    (unsigned)(c-'0'), numTrailZeros,
+			    &significandWide, &significandBig,
+			    significandOverflow);
+		}
+		if (numSigDigs != 0) {
+		    numSigDigs += (numTrailZeros + 1);
+		} else {
+		    numSigDigs = 1;
+		}
+		numTrailZeros = 0;
+		state = BAD_OCTAL;
+		break;
+	    } else if (c == '.') {
+		state = FRACTION;
+		break;
+	    } else if (c == 'E' || c == 'e') {
+		state = EXPONENT_START;
+		break;
+	    }
+#endif
+	    goto endgame;
+
+	    /*
+	     * Scanned 0x. If state is HEXADECIMAL, scanned at least one
+	     * character following the 0x. The only acceptable inputs are
+	     * hexadecimal digits.
+	     */
+
+	case HEXADECIMAL:
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    /* FALLTHROUGH */
+
+	case ZERO_X:
+	zerox:
+	    if (c == '0') {
+		numTrailZeros++;
+		state = HEXADECIMAL;
+		break;
+	    } else if (isdigit(UCHAR(c))) {
+		d = (c-'0');
+	    } else if (c >= 'A' && c <= 'F') {
+		d = (c-'A'+10);
+	    } else if (c >= 'a' && c <= 'f') {
+		d = (c-'a'+10);
+	    } else {
+		goto endgame;
+	    }
+	    if (objPtr != NULL) {
+		shift = 4 * (numTrailZeros + 1);
+		if (!significandOverflow) {
+		    /*
+		     * Shifting by more bits than are in the value being
+		     * shifted is at least de facto nonportable. Check for too
+		     * large shifts first.
+		     */
+
+		    if (significandWide != 0 &&
+			    ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideUInt) ||
+			    significandWide > (~(Tcl_WideUInt)0 >> shift))) {
+			significandOverflow = 1;
+			TclBNInitBignumFromWideUInt(&significandBig,
+				significandWide);
+		    }
+		}
+		if (!significandOverflow) {
+		    significandWide = (significandWide << shift) + d;
+		} else {
+		    mp_mul_2d(&significandBig, shift, &significandBig);
+		    mp_add_d(&significandBig, (mp_digit) d, &significandBig);
+		}
+	    }
+	    numTrailZeros = 0;
+	    state = HEXADECIMAL;
+	    break;
+
+	case BINARY:
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	case ZERO_B:
+	    if (c == '0') {
+		numTrailZeros++;
+		state = BINARY;
+		break;
+	    } else if (c != '1') {
+		goto endgame;
+	    }
+	    if (objPtr != NULL) {
+		shift = numTrailZeros + 1;
+		if (!significandOverflow) {
+		    /*
+		     * Shifting by more bits than are in the value being
+		     * shifted is at least de facto nonportable. Check for too
+		     * large shifts first.
+		     */
+
+		    if (significandWide != 0 &&
+			    ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideUInt) ||
+			    significandWide > (~(Tcl_WideUInt)0 >> shift))) {
+			significandOverflow = 1;
+			TclBNInitBignumFromWideUInt(&significandBig,
+				significandWide);
+		    }
+		}
+		if (!significandOverflow) {
+		    significandWide = (significandWide << shift) + 1;
+		} else {
+		    mp_mul_2d(&significandBig, shift, &significandBig);
+		    mp_add_d(&significandBig, (mp_digit) 1, &significandBig);
+		}
+	    }
+	    numTrailZeros = 0;
+	    state = BINARY;
+	    break;
+
+	case DECIMAL:
+	    /*
+	     * Scanned an optional + or - followed by a string of decimal
+	     * digits.
+	     */
+
+#ifdef KILL_OCTAL
+	decimal:
+#endif
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    if (c == '0') {
+		numTrailZeros++;
+		state = DECIMAL;
+		break;
+	    } else if (isdigit(UCHAR(c))) {
+		if (objPtr != NULL) {
+		    significandOverflow = AccumulateDecimalDigit(
+			    (unsigned)(c - '0'), numTrailZeros,
+			    &significandWide, &significandBig,
+			    significandOverflow);
+		}
+		numSigDigs += numTrailZeros+1;
+		numTrailZeros = 0;
+		state = DECIMAL;
+		break;
+	    } else if (flags & TCL_PARSE_INTEGER_ONLY) {
+		goto endgame;
+	    } else if (c == '.') {
+		state = FRACTION;
+		break;
+	    } else if (c == 'E' || c == 'e') {
+		state = EXPONENT_START;
+		break;
+	    }
+	    goto endgame;
+
+	    /*
+	     * Found a decimal point. If no digits have yet been scanned, E is
+	     * not allowed; otherwise, it introduces the exponent. If at least
+	     * one digit has been found, we have a possible complete number.
+	     */
+
+	case FRACTION:
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    if (c == 'E' || c=='e') {
+		state = EXPONENT_START;
+		break;
+	    }
+	    /* FALLTHROUGH */
+
+	case LEADING_RADIX_POINT:
+	    if (c == '0') {
+		numDigitsAfterDp++;
+		numTrailZeros++;
+		state = FRACTION;
+		break;
+	    } else if (isdigit(UCHAR(c))) {
+		numDigitsAfterDp++;
+		if (objPtr != NULL) {
+		    significandOverflow = AccumulateDecimalDigit(
+			    (unsigned)(c-'0'), numTrailZeros,
+			    &significandWide, &significandBig,
+			    significandOverflow);
+		}
+		if (numSigDigs != 0) {
+		    numSigDigs += numTrailZeros+1;
+		} else {
+		    numSigDigs = 1;
+		}
+		numTrailZeros = 0;
+		state = FRACTION;
+		break;
+	    }
+	    goto endgame;
+
+	case EXPONENT_START:
+	    /*
+	     * Scanned the E at the start of an exponent. Make sure a legal
+	     * character follows before using the C library strtol routine,
+	     * which allows whitespace.
+	     */
+
+	    if (c == '+') {
+		state = EXPONENT_SIGNUM;
+		break;
+	    } else if (c == '-') {
+		exponentSignum = 1;
+		state = EXPONENT_SIGNUM;
+		break;
+	    }
+	    /* FALLTHROUGH */
+
+	case EXPONENT_SIGNUM:
+	    /*
+	     * Found the E at the start of the exponent, followed by a sign
+	     * character.
+	     */
+
+	    if (isdigit(UCHAR(c))) {
+		exponent = c - '0';
+		state = EXPONENT;
+		break;
+	    }
+	    goto endgame;
+
+	case EXPONENT:
+	    /*
+	     * Found an exponent with at least one digit. Accumulate it,
+	     * making sure to hard-pin it to LONG_MAX on overflow.
+	     */
+
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    if (isdigit(UCHAR(c))) {
+		if (exponent < (LONG_MAX - 9) / 10) {
+		    exponent = 10 * exponent + (c - '0');
+		} else {
+		    exponent = LONG_MAX;
+		}
+		state = EXPONENT;
+		break;
+	    }
+	    goto endgame;
+
+	    /*
+	     * Parse out INFINITY by simply spelling it out. INF is accepted
+	     * as an abbreviation; other prefices are not.
+	     */
+
+	case sI:
+	    if (c == 'n' || c == 'N') {
+		state = sIN;
+		break;
+	    }
+	    goto endgame;
+	case sIN:
+	    if (c == 'f' || c == 'F') {
+		state = sINF;
+		break;
+	    }
+	    goto endgame;
+	case sINF:
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    if (c == 'i' || c == 'I') {
+		state = sINFI;
+		break;
+	    }
+	    goto endgame;
+	case sINFI:
+	    if (c == 'n' || c == 'N') {
+		state = sINFIN;
+		break;
+	    }
+	    goto endgame;
+	case sINFIN:
+	    if (c == 'i' || c == 'I') {
+		state = sINFINI;
+		break;
+	    }
+	    goto endgame;
+	case sINFINI:
+	    if (c == 't' || c == 'T') {
+		state = sINFINIT;
+		break;
+	    }
+	    goto endgame;
+	case sINFINIT:
+	    if (c == 'y' || c == 'Y') {
+		state = sINFINITY;
+		break;
+	    }
+	    goto endgame;
+
+	    /*
+	     * Parse NaN's.
+	     */
+#ifdef IEEE_FLOATING_POINT
+	case sN:
+	    if (c == 'a' || c == 'A') {
+		state = sNA;
+		break;
+	    }
+	    goto endgame;
+	case sNA:
+	    if (c == 'n' || c == 'N') {
+		state = sNAN;
+		break;
+	    }
+	    goto endgame;
+	case sNAN:
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    if (c == '(') {
+		state = sNANPAREN;
+		break;
+	    }
+	    goto endgame;
+
+	    /*
+	     * Parse NaN(hexdigits)
+	     */
+	case sNANHEX:
+	    if (c == ')') {
+		state = sNANFINISH;
+		break;
+	    }
+	    /* FALLTHROUGH */
+	case sNANPAREN:
+	    if (TclIsSpaceProc(c)) {
+		break;
+	    }
+	    if (numSigDigs < 13) {
+		if (c >= '0' && c <= '9') {
+		    d = c - '0';
+		} else if (c >= 'a' && c <= 'f') {
+		    d = 10 + c - 'a';
+		} else if (c >= 'A' && c <= 'F') {
+		    d = 10 + c - 'A';
+		} else {
+		    goto endgame;
+		}
+		numSigDigs++;
+		significandWide = (significandWide << 4) + d;
+		state = sNANHEX;
+		break;
+	    }
+	    goto endgame;
+	case sNANFINISH:
+#endif
+
+	case sINFINITY:
+	    acceptState = state;
+	    acceptPoint = p;
+	    acceptLen = len;
+	    goto endgame;
+	}
+	p++;
+	len--;
+    }
+
+  endgame:
+    if (acceptState == INITIAL) {
+	/*
+	 * No numeric string at all found.
+	 */
+
+	status = TCL_ERROR;
+	if (endPtrPtr != NULL) {
+	    *endPtrPtr = p;
+	}
+    } else {
+	/*
+	 * Back up to the last accepting state in the lexer.
+	 */
+
+	p = acceptPoint;
+	len = acceptLen;
+	if (!(flags & TCL_PARSE_NO_WHITESPACE)) {
+	    /*
+	     * Accept trailing whitespace.
+	     */
+
+	    while (len != 0 && TclIsSpaceProc(*p)) {
+		p++;
+		len--;
+	    }
+	}
+	if (endPtrPtr == NULL) {
+	    if ((len != 0) && ((numBytes > 0) || (*p != '\0'))) {
+		status = TCL_ERROR;
+	    }
+	} else {
+	    *endPtrPtr = p;
+	}
+    }
+
+    /*
+     * Generate and store the appropriate internal rep.
+     */
+
+    if (status == TCL_OK && objPtr != NULL) {
+	TclFreeIntRep(objPtr);
+	switch (acceptState) {
+	case SIGNUM:
+	case BAD_OCTAL:
+	case ZERO_X:
+	case ZERO_O:
+	case ZERO_B:
+	case LEADING_RADIX_POINT:
+	case EXPONENT_START:
+	case EXPONENT_SIGNUM:
+	case sI:
+	case sIN:
+	case sINFI:
+	case sINFIN:
+	case sINFINI:
+	case sINFINIT:
+#ifdef IEEE_FLOATING_POINT
+	case sN:
+	case sNA:
+	case sNANPAREN:
+	case sNANHEX:
+	    Tcl_Panic("TclParseNumber: bad acceptState %d parsing '%s'",
+		    acceptState, bytes);
+#endif
+	case BINARY:
+	    shift = numTrailZeros;
+	    if (!significandOverflow && significandWide != 0 &&
+		    ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideUInt) ||
+		    significandWide > (MOST_BITS + signum) >> shift)) {
+		significandOverflow = 1;
+		TclBNInitBignumFromWideUInt(&significandBig, significandWide);
+	    }
+	    if (shift) {
+		if (!significandOverflow) {
+		    significandWide <<= shift;
+		} else {
+		    mp_mul_2d(&significandBig, shift, &significandBig);
+		}
+	    }
+	    goto returnInteger;
+
+	case HEXADECIMAL:
+	    /*
+	     * Returning a hex integer. Final scaling step.
+	     */
+
+	    shift = 4 * numTrailZeros;
+	    if (!significandOverflow && significandWide !=0 &&
+		    ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideUInt) ||
+		    significandWide > (MOST_BITS + signum) >> shift)) {
+		significandOverflow = 1;
+		TclBNInitBignumFromWideUInt(&significandBig, significandWide);
+	    }
+	    if (shift) {
+		if (!significandOverflow) {
+		    significandWide <<= shift;
+		} else {
+		    mp_mul_2d(&significandBig, shift, &significandBig);
+		}
+	    }
+	    goto returnInteger;
+
+	case OCTAL:
+	    /*
+	     * Returning an octal integer. Final scaling step
+	     */
+
+	    shift = 3 * numTrailZeros;
+	    if (!octalSignificandOverflow && octalSignificandWide != 0 &&
+		    ((size_t)shift >= CHAR_BIT*sizeof(Tcl_WideUInt) ||
+		    octalSignificandWide > (MOST_BITS + signum) >> shift)) {
+		octalSignificandOverflow = 1;
+		TclBNInitBignumFromWideUInt(&octalSignificandBig,
+			octalSignificandWide);
+	    }
+	    if (shift) {
+		if (!octalSignificandOverflow) {
+		    octalSignificandWide <<= shift;
+		} else {
+		    mp_mul_2d(&octalSignificandBig, shift,
+			    &octalSignificandBig);
+		}
+	    }
+	    if (!octalSignificandOverflow) {
+		if (octalSignificandWide >
+			(Tcl_WideUInt)(((~(unsigned long)0) >> 1) + signum)) {
+#ifndef NO_WIDE_TYPE
+		    if (octalSignificandWide <= (MOST_BITS + signum)) {
+			objPtr->typePtr = &tclWideIntType;
+			if (signum) {
+			    objPtr->internalRep.wideValue =
+				    - (Tcl_WideInt) octalSignificandWide;
+			} else {
+			    objPtr->internalRep.wideValue =
+				    (Tcl_WideInt) octalSignificandWide;
+			}
+			break;
+		    }
+#endif
+		    TclBNInitBignumFromWideUInt(&octalSignificandBig,
+			    octalSignificandWide);
+		    octalSignificandOverflow = 1;
+		} else {
+		    objPtr->typePtr = &tclIntType;
+		    if (signum) {
+			objPtr->internalRep.longValue =
+				- (long) octalSignificandWide;
+		    } else {
+			objPtr->internalRep.longValue =
+				(long) octalSignificandWide;
+		    }
+		}
+	    }
+	    if (octalSignificandOverflow) {
+		if (signum) {
+		    mp_neg(&octalSignificandBig, &octalSignificandBig);
+		}
+		TclSetBignumIntRep(objPtr, &octalSignificandBig);
+	    }
+	    break;
+
+	case ZERO:
+	case DECIMAL:
+	    significandOverflow = AccumulateDecimalDigit(0, numTrailZeros-1,
+		    &significandWide, &significandBig, significandOverflow);
+	    if (!significandOverflow && (significandWide > MOST_BITS+signum)) {
+		significandOverflow = 1;
+		TclBNInitBignumFromWideUInt(&significandBig, significandWide);
+	    }
+	returnInteger:
+	    if (!significandOverflow) {
+		if (significandWide >
+			(Tcl_WideUInt)(((~(unsigned long)0) >> 1) + signum)) {
+#ifndef NO_WIDE_TYPE
+		    if (significandWide <= MOST_BITS+signum) {
+			objPtr->typePtr = &tclWideIntType;
+			if (signum) {
+			    objPtr->internalRep.wideValue =
+				    - (Tcl_WideInt) significandWide;
+			} else {
+			    objPtr->internalRep.wideValue =
+				    (Tcl_WideInt) significandWide;
+			}
+			break;
+		    }
+#endif
+		    TclBNInitBignumFromWideUInt(&significandBig,
+			    significandWide);
+		    significandOverflow = 1;
+		} else {
+		    objPtr->typePtr = &tclIntType;
+		    if (signum) {
+			objPtr->internalRep.longValue =
+				- (long) significandWide;
+		    } else {
+			objPtr->internalRep.longValue =
+				(long) significandWide;
+		    }
+		}
+	    }
+	    if (significandOverflow) {
+		if (signum) {
+		    mp_neg(&significandBig, &significandBig);
+		}
+		TclSetBignumIntRep(objPtr, &significandBig);
+	    }
+	    break;
+
+	case FRACTION:
+	case EXPONENT:
+
+	    /*
+	     * Here, we're parsing a floating-point number. 'significandWide'
+	     * or 'significandBig' contains the exact significand, according
+	     * to whether 'significandOverflow' is set. The desired floating
+	     * point value is significand * 10**k, where
+	     * k = numTrailZeros+exponent-numDigitsAfterDp.
+	     */
+
+	    objPtr->typePtr = &tclDoubleType;
+	    if (exponentSignum) {
+		exponent = - exponent;
+	    }
+	    if (!significandOverflow) {
+		objPtr->internalRep.doubleValue = MakeLowPrecisionDouble(
+			signum, significandWide, numSigDigs,
+			(numTrailZeros + exponent - numDigitsAfterDp));
+	    } else {
+		objPtr->internalRep.doubleValue = MakeHighPrecisionDouble(
+			signum, &significandBig, numSigDigs,
+			(numTrailZeros + exponent - numDigitsAfterDp));
+	    }
+	    break;
+
+	case sINF:
+	case sINFINITY:
+	    if (signum) {
+		objPtr->internalRep.doubleValue = -HUGE_VAL;
+	    } else {
+		objPtr->internalRep.doubleValue = HUGE_VAL;
+	    }
+	    objPtr->typePtr = &tclDoubleType;
+	    break;
+
+#ifdef IEEE_FLOATING_POINT
+	case sNAN:
+	case sNANFINISH:
+	    objPtr->internalRep.doubleValue = MakeNaN(signum, significandWide);
+	    objPtr->typePtr = &tclDoubleType;
+	    break;
+#endif
+	case INITIAL:
+	    /* This case only to silence compiler warning */
+	    Tcl_Panic("TclParseNumber: state INITIAL can't happen here");
+	}
+    }
+
+    /*
+     * Format an error message when an invalid number is encountered.
+     */
+
+    if (status != TCL_OK) {
+	if (interp != NULL) {
+	    Tcl_Obj *msg;
+
+	    TclNewLiteralStringObj(msg, "expected ");
+	    Tcl_AppendToObj(msg, expected, -1);
+	    Tcl_AppendToObj(msg, " but got \"", -1);
+	    Tcl_AppendLimitedToObj(msg, bytes, numBytes, 50, "");
+	    Tcl_AppendToObj(msg, "\"", -1);
+	    if (state == BAD_OCTAL) {
+		Tcl_AppendToObj(msg, " (looks like invalid octal number)", -1);
+	    }
+	    Tcl_SetObjResult(interp, msg);
+	    Tcl_SetErrorCode(interp, "TCL", "VALUE", "NUMBER", NULL);
+	}
+    }
+
+    /*
+     * Free memory.
+     */
+
+    if (octalSignificandOverflow) {
+	mp_clear(&octalSignificandBig);
+    }
+    if (significandOverflow) {
+	mp_clear(&significandBig);
+    }
+    return status;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AccumulateDecimalDigit --
+ *
+ *	Consume a decimal digit in a number being scanned.
+ *
+ * Results:
+ *	Returns 1 if the number has overflowed to a bignum, 0 if it still fits
+ *	in a wide integer.
+ *
+ * Side effects:
+ *	Updates either the wide or bignum representation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+AccumulateDecimalDigit(
+    unsigned digit,		/* Digit being scanned. */
+    int numZeros,		/* Count of zero digits preceding the digit
+				 * being scanned. */
+    Tcl_WideUInt *wideRepPtr,	/* Representation of the partial number as a
+				 * wide integer. */
+    mp_int *bignumRepPtr,	/* Representation of the partial number as a
+				 * bignum. */
+    int bignumFlag)		/* Flag == 1 if the number overflowed previous
+				 * to this digit. */
+{
+    int i, n;
+    Tcl_WideUInt w;
+
+    /*
+     * Try wide multiplication first
+     */
+
+    if (!bignumFlag) {
+	w = *wideRepPtr;
+	if (w == 0) {
+	    /*
+	     * There's no need to multiply if the multiplicand is zero.
+	     */
+
+	    *wideRepPtr = digit;
+	    return 0;
+	} else if (numZeros >= maxpow10_wide
+		  || w > ((~(Tcl_WideUInt)0)-digit)/pow10_wide[numZeros+1]) {
+	    /*
+	     * Wide multiplication will overflow.  Expand the
+	     * number to a bignum and fall through into the bignum case.
+	     */
+
+	    TclBNInitBignumFromWideUInt(bignumRepPtr, w);
+	} else {
+	    /*
+	     * Wide multiplication.
+	     */
+	    *wideRepPtr = w * pow10_wide[numZeros+1] + digit;
+	    return 0;
+	}
+    }
+
+    /*
+     * Bignum multiplication.
+     */
+
+    if (numZeros < log10_DIGIT_MAX) {
+	/*
+	 * Up to about 8 zeros - single digit multiplication.
+	 */
+
+	mp_mul_d(bignumRepPtr, (mp_digit) pow10_wide[numZeros+1],
+		bignumRepPtr);
+	mp_add_d(bignumRepPtr, (mp_digit) digit, bignumRepPtr);
+    } else {
+	/*
+	 * More than single digit multiplication. Multiply by the appropriate
+	 * small powers of 5, and then shift. Large strings of zeroes are
+	 * eaten 256 at a time; this is less efficient than it could be, but
+	 * seems implausible. We presume that DIGIT_BIT is at least 27. The
+	 * first multiplication, by up to 10**7, is done with a one-DIGIT
+	 * multiply (this presumes that DIGIT_BIT >= 24).
+	 */
+
+	n = numZeros + 1;
+	mp_mul_d(bignumRepPtr, (mp_digit) pow10_wide[n&0x7], bignumRepPtr);
+	for (i=3; i<=7; ++i) {
+	    if (n & (1 << i)) {
+		mp_mul(bignumRepPtr, pow5+i, bignumRepPtr);
+	    }
+	}
+	while (n >= 256) {
+	    mp_mul(bignumRepPtr, pow5+8, bignumRepPtr);
+	    n -= 256;
+	}
+	mp_mul_2d(bignumRepPtr, (int)(numZeros+1)&~0x7, bignumRepPtr);
+	mp_add_d(bignumRepPtr, (mp_digit) digit, bignumRepPtr);
+    }
+
+    return 1;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MakeLowPrecisionDouble --
+ *
+ *	Makes the double precision number, signum*significand*10**exponent.
+ *
+ * Results:
+ *	Returns the constructed number.
+ *
+ *	Common cases, where there are few enough digits that the number can be
+ *	represented with at most roundoff, are handled specially here. If the
+ *	number requires more than one rounded operation to compute, the code
+ *	promotes the significand to a bignum and calls MakeHighPrecisionDouble
+ *	to do it instead.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static double
+MakeLowPrecisionDouble(
+    int signum,			/* 1 if the number is negative, 0 otherwise */
+    Tcl_WideUInt significand,	/* Significand of the number */
+    int numSigDigs,		/* Number of digits in the significand */
+    int exponent)		/* Power of ten */
+{
+    double retval;		/* Value of the number */
+    mp_int significandBig;	/* Significand expressed as a bignum */
+
+    /*
+     * With gcc on x86, the floating point rounding mode is double-extended.
+     * This causes the result of double-precision calculations to be rounded
+     * twice: once to the precision of double-extended and then again to the
+     * precision of double. Double-rounding introduces gratuitous errors of 1
+     * ulp, so we need to change rounding mode to 53-bits.
+     */
+
+#if defined(__GNUC__) && defined(__i386)
+    fpu_control_t roundTo53Bits = 0x027f;
+    fpu_control_t oldRoundingMode;
+    _FPU_GETCW(oldRoundingMode);
+    _FPU_SETCW(roundTo53Bits);
+#endif
+#if defined(__sun) && defined(__i386) && !defined(__GNUC__)
+    ieee_flags("set","precision","double",NULL);
+#endif
+
+    /*
+     * Test for the easy cases.
+     */
+
+    if (numSigDigs <= DBL_DIG) {
+	if (exponent >= 0) {
+	    if (exponent <= mmaxpow) {
+		/*
+		 * The significand is an exact integer, and so is
+		 * 10**exponent. The product will be correct to within 1/2 ulp
+		 * without special handling.
+		 */
+
+		retval = (double)(Tcl_WideInt)significand * pow10vals[exponent];
+		goto returnValue;
+	    } else {
+		int diff = DBL_DIG - numSigDigs;
+		if (exponent-diff <= mmaxpow) {
+		    /*
+		     * 10**exponent is not an exact integer, but
+		     * 10**(exponent-diff) is exact, and so is
+		     * significand*10**diff, so we can still compute the value
+		     * with only one roundoff.
+		     */
+
+		    volatile double factor =
+			    (double)(Tcl_WideInt)significand * pow10vals[diff];
+		    retval = factor * pow10vals[exponent-diff];
+		    goto returnValue;
+		}
+	    }
+	} else {
+	    if (exponent >= -mmaxpow) {
+		/*
+		 * 10**-exponent is an exact integer, and so is the
+		 * significand. Compute the result by one division, again with
+		 * only one rounding.
+		 */
+
+		retval = (double)(Tcl_WideInt)significand / pow10vals[-exponent];
+		goto returnValue;
+	    }
+	}
+    }
+
+    /*
+     * All the easy cases have failed. Promote ths significand to bignum and
+     * call MakeHighPrecisionDouble to do it the hard way.
+     */
+
+    TclBNInitBignumFromWideUInt(&significandBig, significand);
+    retval = MakeHighPrecisionDouble(0, &significandBig, numSigDigs,
+	    exponent);
+    mp_clear(&significandBig);
+
+    /*
+     * Come here to return the computed value.
+     */
+
+  returnValue:
+    if (signum) {
+	retval = -retval;
+    }
+
+    /*
+     * On gcc on x86, restore the floating point mode word.
+     */
+
+#if defined(__GNUC__) && defined(__i386)
+    _FPU_SETCW(oldRoundingMode);
+#endif
+#if defined(__sun) && defined(__i386) && !defined(__GNUC__)
+    ieee_flags("clear","precision",NULL,NULL);
+#endif
+
+    return retval;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MakeHighPrecisionDouble --
+ *
+ *	Makes the double precision number, signum*significand*10**exponent.
+ *
+ * Results:
+ *	Returns the constructed number.
+ *
+ *	MakeHighPrecisionDouble is used when arbitrary-precision arithmetic is
+ *	needed to ensure correct rounding. It begins by calculating a
+ *	low-precision approximation to the desired number, and then refines
+ *	the answer in high precision.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static double
+MakeHighPrecisionDouble(
+    int signum,			/* 1=negative, 0=nonnegative */
+    mp_int *significand,	/* Exact significand of the number */
+    int numSigDigs,		/* Number of significant digits */
+    int exponent)		/* Power of 10 by which to multiply */
+{
+    double retval;
+    int machexp;		/* Machine exponent of a power of 10 */
+
+    /*
+     * With gcc on x86, the floating point rounding mode is double-extended.
+     * This causes the result of double-precision calculations to be rounded
+     * twice: once to the precision of double-extended and then again to the
+     * precision of double. Double-rounding introduces gratuitous errors of 1
+     * ulp, so we need to change rounding mode to 53-bits.
+     */
+
+#if defined(__GNUC__) && defined(__i386)
+    fpu_control_t roundTo53Bits = 0x027f;
+    fpu_control_t oldRoundingMode;
+    _FPU_GETCW(oldRoundingMode);
+    _FPU_SETCW(roundTo53Bits);
+#endif
+#if defined(__sun) && defined(__i386) && !defined(__GNUC__)
+    ieee_flags("set","precision","double",NULL);
+#endif
+
+    /*
+     * Quick checks for over/underflow.
+     */
+
+    if (numSigDigs+exponent-1 > maxDigits) {
+	retval = HUGE_VAL;
+	goto returnValue;
+    }
+    if (numSigDigs+exponent-1 < minDigits) {
+	retval = 0;
+	goto returnValue;
+    }
+
+    /*
+     * Develop a first approximation to the significand. It is tempting simply
+     * to force bignum to double, but that will overflow on input numbers like
+     * 1.[string repeat 0 1000]1; while this is a not terribly likely
+     * scenario, we still have to deal with it. Use fraction and exponent
+     * instead. Once we have the significand, multiply by 10**exponent. Test
+     * for overflow. Convert back to a double, and test for underflow.
+     */
+
+    retval = BignumToBiasedFrExp(significand, &machexp);
+    retval = Pow10TimesFrExp(exponent, retval, &machexp);
+    if (machexp > DBL_MAX_EXP*log2FLT_RADIX) {
+	retval = HUGE_VAL;
+	goto returnValue;
+    }
+    retval = SafeLdExp(retval, machexp);
+    if (tiny == 0.0) {
+	tiny = SafeLdExp(1.0, DBL_MIN_EXP * log2FLT_RADIX - mantBits);
+    }
+    if (retval < tiny) {
+	retval = tiny;
+    }
+
+    /*
+     * Refine the result twice. (The second refinement should be necessary
+     * only if the best approximation is a power of 2 minus 1/2 ulp).
+     */
+
+    retval = RefineApproximation(retval, significand, exponent);
+    retval = RefineApproximation(retval, significand, exponent);
+
+    /*
+     * Come here to return the computed value.
+     */
+
+  returnValue:
+    if (signum) {
+	retval = -retval;
+    }
+
+    /*
+     * On gcc on x86, restore the floating point mode word.
+     */
+
+#if defined(__GNUC__) && defined(__i386)
+    _FPU_SETCW(oldRoundingMode);
+#endif
+#if defined(__sun) && defined(__i386) && !defined(__GNUC__)
+    ieee_flags("clear","precision",NULL,NULL);
+#endif
+    return retval;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * MakeNaN --
+ *
+ *	Makes a "Not a Number" given a set of bits to put in the tag bits
+ *
+ *	Note that a signalling NaN is never returned.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef IEEE_FLOATING_POINT
+static double
+MakeNaN(
+    int signum,			/* Sign bit (1=negative, 0=nonnegative */
+    Tcl_WideUInt tags)	 	/* Tag bits to put in the NaN */
+{
+    union {
+	Tcl_WideUInt iv;
+	double dv;
+    } theNaN;
+
+    theNaN.iv = tags;
+    theNaN.iv &= (((Tcl_WideUInt) 1) << 51) - 1;
+    if (signum) {
+	theNaN.iv |= ((Tcl_WideUInt) (0x8000 | NAN_START)) << 48;
+    } else {
+	theNaN.iv |= ((Tcl_WideUInt) NAN_START) << 48;
+    }
+    if (n770_fp) {
+	theNaN.iv = Nokia770Twiddle(theNaN.iv);
+    }
+    return theNaN.dv;
+}
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * RefineApproximation --
+ *
+ *	Given a poor approximation to a floating point number, returns a
+ *	better one. (The better approximation is correct to within 1 ulp, and
+ *	is entirely correct if the poor approximation is correct to 1 ulp.)
+ *
+ * Results:
+ *	Returns the improved result.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static double
+RefineApproximation(
+    double approxResult,	/* Approximate result of conversion */
+    mp_int *exactSignificand,	/* Integer significand */
+    int exponent)		/* Power of 10 to multiply by significand */
+{
+    int M2, M5;			/* Powers of 2 and of 5 needed to put the
+				 * decimal and binary numbers over a common
+				 * denominator. */
+    double significand;		/* Sigificand of the binary number */
+    int binExponent;		/* Exponent of the binary number */
+    int msb;			/* Most significant bit position of an
+				 * intermediate result */
+    int nDigits;		/* Number of mp_digit's in an intermediate
+				 * result */
+    mp_int twoMv;		/* Approx binary value expressed as an exact
+				 * integer scaled by the multiplier 2M */
+    mp_int twoMd;		/* Exact decimal value expressed as an exact
+				 * integer scaled by the multiplier 2M */
+    int scale;			/* Scale factor for M */
+    int multiplier;		/* Power of two to scale M */
+    double num, den;		/* Numerator and denominator of the correction
+				 * term */
+    double quot;		/* Correction term */
+    double minincr;		/* Lower bound on the absolute value of the
+				 * correction term. */
+    int i;
+
+    /*
+     * The first approximation is always low. If we find that it's HUGE_VAL,
+     * we're done.
+     */
+
+    if (approxResult == HUGE_VAL) {
+	return approxResult;
+    }
+
+    /*
+     * Find a common denominator for the decimal and binary fractions. The
+     * common denominator will be 2**M2 + 5**M5.
+     */
+
+    significand = frexp(approxResult, &binExponent);
+    i = mantBits - binExponent;
+    if (i < 0) {
+	M2 = 0;
+    } else {
+	M2 = i;
+    }
+    if (exponent > 0) {
+	M5 = 0;
+    } else {
+	M5 = -exponent;
+	if ((M5-1) > M2) {
+	    M2 = M5-1;
+	}
+    }
+
+    /*
+     * The floating point number is significand*2**binExponent. Compute the
+     * large integer significand*2**(binExponent+M2+1). The 2**-1 bit of the
+     * significand (the most significant) corresponds to the
+     * 2**(binExponent+M2 + 1) bit of 2*M2*v. Allocate enough digits to hold
+     * that quantity, then convert the significand to a large integer, scaled
+     * appropriately. Then multiply by the appropriate power of 5.
+     */
+
+    msb = binExponent + M2;	/* 1008 */
+    nDigits = msb / DIGIT_BIT + 1;
+    mp_init_size(&twoMv, nDigits);
+    i = (msb % DIGIT_BIT + 1);
+    twoMv.used = nDigits;
+    significand *= SafeLdExp(1.0, i);
+    while (--nDigits >= 0) {
+	twoMv.dp[nDigits] = (mp_digit) significand;
+	significand -= (mp_digit) significand;
+	significand = SafeLdExp(significand, DIGIT_BIT);
+    }
+    for (i = 0; i <= 8; ++i) {
+	if (M5 & (1 << i)) {
+	    mp_mul(&twoMv, pow5+i, &twoMv);
+	}
+    }
+
+    /*
+     * Collect the decimal significand as a high precision integer. The least
+     * significant bit corresponds to bit M2+exponent+1 so it will need to be
+     * shifted left by that many bits after being multiplied by
+     * 5**(M5+exponent).
+     */
+
+    mp_init_copy(&twoMd, exactSignificand);
+    for (i=0; i<=8; ++i) {
+	if ((M5+exponent) & (1 << i)) {
+	    mp_mul(&twoMd, pow5+i, &twoMd);
+	}
+    }
+    mp_mul_2d(&twoMd, M2+exponent+1, &twoMd);
+    mp_sub(&twoMd, &twoMv, &twoMd);
+
+    /*
+     * The result, 2Mv-2Md, needs to be divided by 2M to yield a correction
+     * term. Because 2M may well overflow a double, we need to scale the
+     * denominator by a factor of 2**binExponent-mantBits
+     */
+
+    scale = binExponent - mantBits - 1;
+
+    mp_set(&twoMv, 1);
+    for (i=0; i<=8; ++i) {
+	if (M5 & (1 << i)) {
+	    mp_mul(&twoMv, pow5+i, &twoMv);
+	}
+    }
+    multiplier = M2 + scale + 1;
+    if (multiplier > 0) {
+	mp_mul_2d(&twoMv, multiplier, &twoMv);
+    } else if (multiplier < 0) {
+	mp_div_2d(&twoMv, -multiplier, &twoMv, NULL);
+    }
+
+    /*
+     * If the result is less than unity, the error is less than 1/2 unit in
+     * the last place, so there's no correction to make.
+     */
+
+    if (mp_cmp_mag(&twoMd, &twoMv) == MP_LT) {
+        mp_clear(&twoMd);
+        mp_clear(&twoMv);
+	return approxResult;
+    }
+
+    /*
+     * Convert the numerator and denominator of the corrector term accurately
+     * to floating point numbers.
+     */
+
+    num = TclBignumToDouble(&twoMd);
+    den = TclBignumToDouble(&twoMv);
+
+    quot = SafeLdExp(num/den, scale);
+    minincr = SafeLdExp(1.0, binExponent-mantBits);
+
+    if (quot<0. && quot>-minincr) {
+	quot = -minincr;
+    } else if (quot>0. && quot<minincr) {
+	quot = minincr;
+    }
+
+    mp_clear(&twoMd);
+    mp_clear(&twoMv);
+
+    return approxResult + quot;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * MultPow5 --
+ *
+ *	Multiply a bignum by a power of 5.
+ *
+ * Side effects:
+ *	Stores base*5**n in result
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static void
+MulPow5(mp_int* base, 		/* Number to multiply */
+	 unsigned n,		/* Power of 5 to multiply by */
+	 mp_int* result)	/* Place to store the result */
+{
+    mp_int* p = base;
+    int n13 = n / 13;
+    int r = n % 13;
+    if (r != 0) {
+	mp_mul_d(p, dpow5[r], result);
+	p = result;
+    }
+    r = 0;
+    while (n13 != 0) {
+	if (n13 & 1) {
+	    mp_mul(p, pow5_13+r, result);
+	    p = result;
+	}
+	n13 >>= 1;
+	++r;
+    }
+    if (p != result) {
+	mp_copy(p, result);
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * NormalizeRightward --
+ *
+ *	Shifts a number rightward until it is odd (that is, until the
+ *	least significant bit is nonzero.
+ *
+ * Results:
+ *	Returns the number of bit positions by which the number was shifted.
+ *
+ * Side effects:
+ *	Shifts the number in place; *wPtr is replaced by the shifted number.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+NormalizeRightward(Tcl_WideUInt* wPtr)
+				/* INOUT: Number to shift */
+{
+    int rv = 0;
+    Tcl_WideUInt w = *wPtr;
+    if (!(w & (Tcl_WideUInt) 0xffffffff)) {
+	w >>= 32; rv += 32;
+    } 
+    if (!(w & (Tcl_WideUInt) 0xffff)) {
+	w >>= 16; rv += 16;
+    }
+    if (!(w & (Tcl_WideUInt) 0xff)) {
+	w >>= 8; rv += 8;
+    }
+    if (!(w & (Tcl_WideUInt) 0xf)) {
+	w >>= 4; rv += 4;
+    }
+    if (!(w & 0x3)) {
+	w >>= 2; rv += 2;
+    }
+    if (!(w & 0x1)) {
+	w >>= 1; ++rv;
+    }
+    *wPtr = w;
+    return rv;
+}
+
+/*
+ *-----------------------------------------------------------------------------0
+ *
+ * RequiredPrecision --
+ *
+ *	Determines the number of bits needed to hold an intger.
+ *
+ * Results:
+ *	Returns the position of the most significant bit (0 - 63).
+ *	Returns 0 if the number is zero.
+ *
+ *----------------------------------------------------------------------------
+ */
+
+static int
+RequiredPrecision(Tcl_WideUInt w)
+				/* Number to interrogate */
+{
+    int rv;
+    unsigned long wi;
+    if (w & ((Tcl_WideUInt) 0xffffffff << 32)) {
+	wi = (unsigned long) (w >> 32); rv = 32;
+    } else {
+	wi = (unsigned long) w; rv = 0;
+    }
+    if (wi & 0xffff0000) {
+	wi >>= 16; rv += 16;
+    }
+    if (wi & 0xff00) {
+	wi >>= 8; rv += 8;
+    }
+    if (wi & 0xf0) {
+	wi >>= 4; rv += 4;
+    }
+    if (wi & 0xc) {
+	wi >>= 2; rv += 2;
+    }
+    if (wi & 0x2) {
+	wi >>= 1; ++rv;
+    }
+    if (wi & 0x1) {
+	++rv;
+    }
+    return rv;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * DoubleToExpAndSig --
+ *
+ *	Separates a 'double' into exponent and significand.
+ *
+ * Side effects:
+ *	Stores the significand in '*significand' and the exponent in
+ *	'*expon' so that dv == significand * 2.0**expon, and significand
+ *	is odd.  Also stores the position of the leftmost 1-bit in 'significand'
+ *	in 'bits'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static void
+DoubleToExpAndSig(double dv,	/* Number to convert */
+		  Tcl_WideUInt* significand,
+				/* OUTPUT: Significand of the number */
+		  int* expon,	/* OUTPUT: Exponent to multiply the number by */
+		  int* bits)	/* OUTPUT: Number of significant bits */
+{
+    Double d;			/* Number being converted */
+    Tcl_WideUInt z;		/* Significand under construction */
+    int de;			/* Exponent of the number */
+    int k;			/* Bit count */
+
+    d.d = dv;
+
+    /* Extract exponent and significand */
+
+    de = (d.w.word0 & EXP_MASK) >> EXP_SHIFT;
+    z = d.q & SIG_MASK;
+    if (de != 0) {
+	z |= HIDDEN_BIT;
+	k = NormalizeRightward(&z);
+	*bits = FP_PRECISION - k;
+	*expon = k + (de - EXPONENT_BIAS) - (FP_PRECISION-1);
+    } else {
+	k = NormalizeRightward(&z);
+	*expon = k + (de - EXPONENT_BIAS) - (FP_PRECISION-1) + 1;
+	*bits = RequiredPrecision(z);
+    }
+    *significand = z;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * TakeAbsoluteValue --
+ *
+ *	Takes the absolute value of a 'double' including 0, Inf and NaN
+ *
+ * Side effects:
+ *	The 'double' in *d is replaced with its absolute value. The
+ *	signum is stored in 'sign': 1 for negative, 0 for nonnegative.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static void
+TakeAbsoluteValue(Double* d,	/* Number to replace with absolute value */
+		  int* sign)	/* Place to put the signum */
+{
+    if (d->w.word0 & SIGN_BIT) {
+	*sign = 1;
+	d->w.word0 &= ~SIGN_BIT;
+    } else {
+	*sign = 0;
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FormatInfAndNaN --
+ *
+ *	Bailout for formatting infinities and Not-A-Number.
+ *
+ * Results:
+ *	Returns one of the strings 'Infinity' and 'NaN'.
+ *
+ * Side effects:
+ *	Stores 9999 in *decpt, and sets '*endPtr' to designate the
+ *	terminating NUL byte of the string if 'endPtr' is not NULL. 
+ *
+ * The string returned must be freed by the caller using 'ckfree'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+FormatInfAndNaN(Double* d,	/* Exceptional number to format */
+		int* decpt,	/* Decimal point to set to a bogus value */
+		char** endPtr)	/* Pointer to the end of the formatted data */
+{
+    char* retval;
+    *decpt = 9999;
+    if (!(d->w.word1) && !(d->w.word0 & HI_ORDER_SIG_MASK)) {
+	retval = ckalloc(9);
+	strcpy(retval, "Infinity");
+	if (endPtr) {
+	    *endPtr = retval + 8;
+	}
+    } else {
+	retval = ckalloc(4);
+	strcpy(retval, "NaN");
+	if (endPtr) {
+	    *endPtr = retval + 3;
+	}
+    }
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * FormatZero --
+ *
+ *	Bailout to format a zero floating-point number.
+ *
+ * Results:
+ *	Returns the constant string "0"
+ *
+ * Side effects:
+ *	Stores 1 in '*decpt' and puts a pointer to the NUL byte terminating
+ *	the string in '*endPtr' if 'endPtr' is not NULL.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+FormatZero(int* decpt,		/* Location of the decimal point */
+	   char** endPtr)	/* Pointer to the end of the formatted data */
+{
+    char* retval = ckalloc(2);
+    strcpy(retval, "0");
+    if (endPtr) {
+	*endPtr = retval+1;
+    }
+    *decpt = 0;
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ApproximateLog10 --
+ *
+ *	Computes a two-term Taylor series approximation to the common
+ *	log of a number, and computes the number's binary log.
+ *
+ * Results:
+ *	Return an approximation to floor(log10(bw*2**be)) that is either
+ *	exact or 1 too high.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+ApproximateLog10(Tcl_WideUInt bw,
+				/* Integer significand of the number */
+		 int be,	/* Power of two to scale bw */
+		 int bbits)	/* Number of bits of precision in bw */
+{
+    int i;			/* Log base 2 of the number */
+    int k;			/* Floor(Log base 10 of the number) */
+    double ds;			/* Mantissa of the number */
+    Double d2;
+
+    /*
+     * Compute i and d2 such that d = d2*2**i, and 1 < d2 < 2.
+     * Compute an approximation to log10(d), 
+     *   log10(d) ~ log10(2) * i + log10(1.5) 
+     *            + (significand-1.5)/(1.5 * log(10))
+     */
+
+    d2.q = bw << (FP_PRECISION - bbits) & SIG_MASK;
+    d2.w.word0 |= (EXPONENT_BIAS) << EXP_SHIFT;
+    i = be + bbits - 1;
+    ds = (d2.d - 1.5) * TWO_OVER_3LOG10
+	+ LOG10_3HALVES_PLUS_FUDGE
+	+ LOG10_2 * i;
+    k = (int) ds;
+    if (k > ds) {
+	--k;
+    }
+    return k;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * BetterLog10 --
+ *
+ *	Improves the result of ApproximateLog10 for numbers in the range
+ *	1 .. 10**(TEN_PMAX)-1
+ *
+ * Side effects:
+ *	Sets k_check to 0 if the new result is known to be exact, and to
+ *	1 if it may still be one too high.
+ *
+ * Results:
+ *	Returns the improved approximation to log10(d)
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+BetterLog10(double d,		/* Original number to format */
+	  int k,		/* Characteristic(Log base 10) of the number */
+	  int* k_check)		/* Flag == 1 if k is inexact */
+{
+    /* 
+     * Performance hack. If k is in the range 0..TEN_PMAX, then we can
+     * use a powers-of-ten table to check it.
+     */
+    if (k >= 0 && k <= TEN_PMAX) {
+	if (d < tens[k]) {
+	    k--;
+	}
+	*k_check = 0;
+    } else {
+	*k_check = 1;
+    }
+    return k;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ComputeScale --
+ *
+ *	Prepares to format a floating-point number as decimal.
+ *
+ * Parameters:
+ *	floor(log10*x) is k (or possibly k-1).  floor(log2(x) is i.
+ *	The significand of x requires bbits bits to represent.
+ *
+ * Results:
+ *	Determines integers b2, b5, s2, s5 so that sig*2**b2*5**b5/2**s2*2**s5
+ *	exactly represents the value of the x/10**k. This value will lie
+ *	in the range [1 .. 10), and allows for computing successive digits
+ *	by multiplying sig%10 by 10.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static void
+ComputeScale(int be,		/* Exponent part of number: d = bw * 2**be */
+	     int k,		/* Characteristic of log10(number) */
+	     int* b2,		/* OUTPUT: Power of 2 in the numerator */
+	     int* b5,		/* OUTPUT: Power of 5 in the numerator */
+	     int* s2,		/* OUTPUT: Power of 2 in the denominator */
+	     int* s5)		/* OUTPUT: Power of 5 in the denominator */
+{
+
+    /* 
+     * Scale numerator and denominator powers of 2 so that the
+     * input binary number is the ratio of integers
+     */
+    if (be <= 0) {
+	*b2 = 0;
+	*s2 = -be;
+    } else {
+	*b2 = be;
+	*s2 = 0;
+    }
+
+    /* 
+     * Scale numerator and denominator so that the output decimal number
+     * is the ratio of integers
+     */
+    if (k >= 0) {
+	*b5 = 0;
+	*s5 = k;
+	*s2 += k;
+    } else {
+	*b2 -= k;
+	*b5 = -k;
+	*s5 = 0;
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * SetPrecisionLimits --
+ *
+ *	Determines how many digits of significance should be computed
+ *	(and, hence, how much memory need be allocated) for formatting a
+ *	floating point number.
+ *
+ * Given that 'k' is floor(log10(x)):
+ * if 'shortest' format is used, there will be at most 18 digits in the result.
+ * if 'F' format is used, there will be at most 'ndigits' + k + 1 digits
+ * if 'E' format is used, there will be exactly 'ndigits' digits.
+ *
+ * Side effects:
+ *	Adjusts '*ndigitsPtr' to have a valid value.
+ *	Stores the maximum memory allocation needed in *iPtr.
+ *	Sets '*iLimPtr' to the limiting number of digits to convert if k
+ *	has been guessed correctly, and '*iLim1Ptr' to the limiting number
+ *	of digits to convert if k has been guessed to be one too high.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static void
+SetPrecisionLimits(int convType,
+				/* Type of conversion:
+				 *   TCL_DD_SHORTEST
+				 *   TCL_DD_STEELE0
+				 *   TCL_DD_E_FMT
+				 *   TCL_DD_F_FMT */
+		   int k,	/* Floor(log10(number to convert)) */
+		   int* ndigitsPtr,
+				/* IN/OUT: Number of digits requested
+				 *         (Will be adjusted if needed) */
+		   int* iPtr,	/* OUT: Maximum number of digits
+				 *      to return */
+		   int *iLimPtr,/* OUT: Number of digits of significance
+				 *      if the bignum method is used.*/
+		   int *iLim1Ptr)
+				/* OUT: Number of digits of significance
+				 *      if the quick method is used. */
+{
+    switch(convType) {
+    case TCL_DD_SHORTEST0:
+    case TCL_DD_STEELE0:
+	*iLimPtr = *iLim1Ptr = -1;
+	*iPtr = 18;
+	*ndigitsPtr = 0;
+	break;
+    case TCL_DD_E_FORMAT:
+	if (*ndigitsPtr <= 0) {
+	    *ndigitsPtr = 1;
+	}
+	*iLimPtr = *iLim1Ptr = *iPtr = *ndigitsPtr;
+	break;
+    case TCL_DD_F_FORMAT:
+	*iPtr = *ndigitsPtr + k + 1;
+	*iLimPtr = *iPtr;
+	*iLim1Ptr = *iPtr - 1;
+	if (*iPtr <= 0) {
+	    *iPtr = 1;
+	}
+	break;
+    default:
+	*iPtr = -1;
+	*iLimPtr = -1;
+	*iLim1Ptr = -1;
+	Tcl_Panic("impossible conversion type in TclDoubleDigits");
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * BumpUp --
+ *
+ *	Increases a string of digits ending in a series of nines to
+ *	designate the next higher number.  xxxxb9999... -> xxxx(b+1)0000...
+ *
+ * Results:
+ *	Returns a pointer to the end of the adjusted string.
+ *
+ * Side effects:
+ *	In the case that the string consists solely of '999999', sets it
+ *	to "1" and moves the decimal point (*kPtr) one place to the right.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+
+inline static char*
+BumpUp(char* s,		    	/* Cursor pointing one past the end of the
+				 * string */ 
+       char* retval,		/* Start of the string of digits */
+       int* kPtr)		/* Position of the decimal point */
+{
+    while (*--s == '9') {
+	if (s == retval) {
+	    ++(*kPtr);
+	    *s = '1';
+	    return s+1;
+	}
+    }
+    ++*s;
+    ++s;
+    return s;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * AdjustRange --
+ *
+ *	Rescales a 'double' in preparation for formatting it using the
+ *	'quick' double-to-string method.
+ *
+ * Results:
+ *	Returns the precision that has been lost in the prescaling as
+ *	a count of units in the least significant place.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+AdjustRange(double* dPtr,	/* INOUT: Number to adjust */
+	    int k)		/* IN: floor(log10(d)) */
+{
+    int ieps;			/* Number of roundoff errors that have
+				 * accumulated */
+    double d = *dPtr;		/* Number to adjust */
+    double ds;
+    int i, j, j1;
+
+    ieps = 2;
+
+    if (k > 0) {
+	/*
+	 * The number must be reduced to bring it into range.
+	 */
+	ds = tens[k & 0xf];
+	j = k >> 4;
+	if (j & BLETCH) {
+	    j &= (BLETCH-1);
+	    d /= bigtens[N_BIGTENS - 1];
+	    ieps++;
+	}
+	i = 0;
+	for (; j != 0; j>>=1) {
+	    if (j & 1) {
+		ds *= bigtens[i];
+		++ieps;
+	    }
+	    ++i;
+	}
+	d /= ds;
+    } else if ((j1 = -k) != 0) {
+	/*
+	 * The number must be increased to bring it into range
+	 */
+	d *= tens[j1 & 0xf];
+	i = 0;
+	for (j = j1>>4; j; j>>=1) {
+	    if (j & 1) {
+		ieps++;
+		d *= bigtens[i];
+	    }
+	    ++i;
+	}
+    }
+
+    *dPtr = d;
+    return ieps;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShorteningQuickFormat --
+ *
+ *	Returns a 'quick' format of a double precision number to a string
+ *	of digits, preferring a shorter string of digits if the shorter
+ *	string is still within 1/2 ulp of the number. 
+ *
+ * Results:
+ *	Returns the string of digits. Returns NULL if the 'quick' method
+ *	fails and the bignum method must be used.
+ *
+ * Side effects:
+ *	Stores the position of the decimal point at '*kPtr'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+ShorteningQuickFormat(double d,	/* Number to convert */
+		      int k,	/* floor(log10(d)) */
+		      int ilim,	/* Number of significant digits to return */
+		      double eps,
+		      		/* Estimated roundoff error */
+		      char* retval,
+		      		/* Buffer to receive the digit string */
+		      int* kPtr)
+				/* Pointer to stash the position of
+				 * the decimal point */
+{
+    char* s = retval;		/* Cursor in the return value */
+    int digit;			/* Current digit */
+    int i;
+
+    eps = 0.5 / tens[ilim-1] - eps;
+    i = 0;
+    for (;;) {
+	/* Convert a digit */
+
+	digit = (int) d;
+	d -= digit;
+	*s++ = '0' + digit;
+
+	/*
+	 * Truncate the conversion if the string of digits is within
+	 * 1/2 ulp of the actual value.
+	 */
+
+	if (d < eps) {
+	    *kPtr = k;
+	    return s;
+	}
+	if ((1. - d) < eps) {
+	    *kPtr = k;
+	    return BumpUp(s, retval, kPtr);
+	}
+
+	/*
+	 * Bail out if the conversion fails to converge to a sufficiently
+	 * precise value
+	 */
+
+	if (++i >= ilim) {
+	    return NULL;
+	}
+
+	/*
+	 * Bring the next digit to the integer part.
+	 */
+
+	eps *= 10;
+	d *= 10.0;
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * StrictQuickFormat --
+ *
+ *	Convert a double precision number of a string of a precise number
+ *	of digits, using the 'quick' double precision method.
+ *
+ * Results:
+ *	Returns the digit string, or NULL if the bignum method must be
+ *	used to do the formatting.
+ *
+ * Side effects:
+ *	Stores the position of the decimal point in '*kPtr'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+StrictQuickFormat(double d,	/* Number to convert */
+		  int k,	/* floor(log10(d)) */
+		  int ilim,	/* Number of significant digits to return */
+		  double eps,	/* Estimated roundoff error */
+		  char* retval,	/* Start of the digit string */
+		  int* kPtr)	/* Pointer to stash the position of
+				 * the decimal point */
+{
+    char* s = retval;		/* Cursor in the return value */
+    int digit;			/* Current digit of the answer */
+    int i;
+
+    eps *= tens[ilim-1];
+    i = 1;
+    for (;;) {
+	/* Extract a digit */
+	digit = (int) d;
+	d -= digit;
+	if (d == 0.0) {
+	    ilim = i;
+	}
+	*s++ = '0' + digit;
+
+	/* 
+	 * When the given digit count is reached, handle trailing strings
+	 * of 0 and 9.
+	 */
+	if (i == ilim) {
+	    if (d > 0.5 + eps) {
+		*kPtr = k;
+		return BumpUp(s, retval, kPtr);
+	    } else if (d < 0.5 - eps) {
+		while (*--s == '0') {
+		    /* do nothing */
+		}
+		s++;
+		*kPtr = k;
+		return s;
+	    } else {
+		return NULL;
+	    }
+	}
+
+	/* Advance to the next digit */
+	++i;
+	d *= 10.0;
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * QuickConversion --
+ *
+ *	Converts a floating point number the 'quick' way, when only a limited
+ *	number of digits is required and floating point arithmetic can
+ *	therefore be used for the intermediate results.
+ *
+ * Results:
+ *	Returns the converted string, or NULL if the bignum method must
+ *	be used.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+QuickConversion(double e,	/* Number to format */
+		int k,		/* floor(log10(d)), approximately */
+		int k_check,	/* 0 if k is exact, 1 if it may be too high */
+		int flags,	/* Flags passed to dtoa:
+				 *    TCL_DD_SHORTEN_FLAG */
+		int len,	/* Length of the return value */
+		int ilim,	/* Number of digits to store */
+		int ilim1,	/* Number of digits to store if we
+				 * musguessed k */
+		int* decpt,	/* OUTPUT: Location of the decimal point */
+		char** endPtr)	/* OUTPUT: Pointer to the terminal null byte */
+{
+    int ieps;			/* Number of 1-ulp roundoff errors that have
+				 * accumulated in the calculation*/
+    Double eps;			/* Estimated roundoff error */
+    char* retval;		/* Returned string */
+    char* end;			/* Pointer to the terminal null byte in the
+				 * returned string */
+    volatile double d;		/* Workaround for a bug in mingw gcc 3.4.5 */
+
+    /*
+     * Bring d into the range [1 .. 10)
+     */
+    ieps = AdjustRange(&e, k);
+    d = e;
+
+    /*
+     * If the guessed value of k didn't get d into range, adjust it
+     * by one. If that leaves us outside the range in which quick format
+     * is accurate, bail out.
+     */
+    if (k_check && d < 1. && ilim > 0) {
+	if (ilim1 < 0) {
+	    return NULL;
+	}
+	ilim = ilim1;
+	--k;
+	d *= 10.0;
+	++ieps;
+    }
+
+    /*
+     * Compute estimated roundoff error
+     */
+    eps.d = ieps * d + 7.;
+    eps.w.word0 -= (FP_PRECISION-1) << EXP_SHIFT;
+
+    /*
+     * Handle the peculiar case where the result has no significant
+     * digits.
+     */
+    retval = ckalloc(len + 1);
+    if (ilim == 0) {
+	d -= 5.;
+	if (d > eps.d) {
+	    *retval = '1';
+	    *decpt = k;
+	    return retval;
+	} else if (d < -eps.d) {
+	    *decpt = k;
+	    return retval;
+	} else {
+	    ckfree(retval);
+	    return NULL;
+	}
+    }
+
+    /* Format the digit string */
+
+    if (flags & TCL_DD_SHORTEN_FLAG) {
+	end = ShorteningQuickFormat(d, k, ilim, eps.d, retval, decpt);
+    } else {
+	end = StrictQuickFormat(d, k, ilim, eps.d, retval, decpt);
+    }
+    if (end == NULL) {
+	ckfree(retval);
+	return NULL;
+    }
+    *end = '\0';
+    if (endPtr != NULL) {
+	*endPtr = end;
+    }
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * CastOutPowersOf2 --
+ *
+ *	Adjust the factors 'b2', 'm2', and 's2' to cast out common powers
+ *	of 2 from numerator and denominator in preparation for the 'bignum'
+ *	method of floating point conversion.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static void
+CastOutPowersOf2(int* b2,	/* Power of 2 to multiply the significand  */
+		 int* m2,	/* Power of 2 to multiply 1/2 ulp  */
+		 int* s2)	/* Power of 2 to multiply the common
+				 * denominator */
+{
+    int i;
+    if (*m2 > 0 && *s2 > 0) {	/* Find the smallest power of 2 in the
+				 * numerator */
+        if (*m2 < *s2) {	/* Find the lowest common denominatorr */
+	    i = *m2;
+	} else {
+	    i = *s2;
+	}
+	*b2 -= i;		/* Reduce to lowest terms */
+	*m2 -= i;
+	*s2 -= i;
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShorteningInt64Conversion --
+ *
+ *	Converts a double-precision number to the shortest string of
+ *	digits that reconverts exactly to the given number, or to
+ *	'ilim' digits if that will yield a shorter result. The numerator and
+ *	denominator in David Gay's conversion algorithm are known to fit
+ *	in Tcl_WideUInt, giving considerably faster arithmetic than mp_int's.
+ *
+ * Results:
+ *	Returns the string of significant decimal digits, in newly
+ *	allocated memory
+ *
+ * Side effects:
+ *	Stores the location of the decimal point in '*decpt' and the
+ *      location of the terminal null byte in '*endPtr'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+ShorteningInt64Conversion(Double* dPtr,
+				/* Original number to convert */
+			  int convType,
+				/* Type of conversion (shortest, Steele,
+				   E format, F format) */
+			  Tcl_WideUInt bw,
+				/* Integer significand */
+			  int b2, int b5,
+				/* Scale factor for the significand
+				 * in the numerator */
+			  int m2plus, int m2minus, int m5,
+				/* Scale factors for 1/2 ulp in
+				 * the numerator (will be different if
+				 * bw == 1 */
+			  int s2, int s5,
+				/* Scale factors for the denominator */
+			  int k,
+				/* Number of output digits before the decimal
+				 * point */
+			  int len,
+				/* Number of digits to allocate */
+			  int ilim,
+				/* Number of digits to convert if b >= s */
+			  int ilim1,
+				/* Number of digits to convert if b < s */
+			  int* decpt,
+				/* OUTPUT: Position of the decimal point */
+			  char** endPtr)
+				/* OUTPUT: Position of the terminal '\0'
+				 *         at the end of the returned string */
+{
+    
+    char* retval = ckalloc(len + 1);
+				/* Output buffer */
+    Tcl_WideUInt b = (bw * wuipow5[b5]) << b2;
+				/* Numerator of the fraction being converted */
+    Tcl_WideUInt S = wuipow5[s5] << s2;
+				/* Denominator of the fraction being 
+				 * converted */
+    Tcl_WideUInt mplus, mminus;	/* Ranges for testing whether the result
+				 * is within roundoff of being exact */
+    int digit;			/* Current output digit */
+    char* s = retval;		/* Cursor in the output buffer */
+    int i;			/* Current position in the output buffer */
+
+    /* Adjust if the logarithm was guessed wrong */
+
+    if (b < S) {
+	b = 10 * b;
+	++m2plus; ++m2minus; ++m5;
+	ilim = ilim1;
+	--k;
+    }
+
+    /* Compute roundoff ranges */
+
+    mplus = wuipow5[m5] << m2plus;
+    mminus = wuipow5[m5] << m2minus;
+
+    /* Loop through the digits */
+
+    i = 1;
+    for (;;) {
+	digit = (int)(b / S);
+	if (digit > 10) {
+	    Tcl_Panic("wrong digit!");
+	}
+	b = b % S;
+
+	/* 
+	 * Does the current digit put us on the low side of the exact value
+	 * but within within roundoff of being exact?
+	 */
+	if (b < mplus
+	    || (b == mplus
+		&& convType != TCL_DD_STEELE0
+		&& (dPtr->w.word1 & 1) == 0)) {
+	    /*
+	     * Make sure we shouldn't be rounding *up* instead,
+	     * in case the next number above is closer
+	     */
+	    if (2 * b > S
+		|| (2 * b == S
+		    && (digit & 1) != 0)) {
+		++digit;
+		if (digit == 10) {
+		    *s++ = '9';
+		    s = BumpUp(s, retval, &k);
+		    break;
+		}
+	    }
+
+	    /* Stash the current digit */
+
+	    *s++ = '0' + digit;
+	    break;
+	}
+
+	/*
+	 * Does one plus the current digit put us within roundoff of the
+	 * number?
+	 */
+	if (b > S - mminus
+	    || (b == S - mminus
+		&& convType != TCL_DD_STEELE0
+		&& (dPtr->w.word1 & 1) == 0)) {
+	    if (digit == 9) {
+		*s++ = '9';
+		s = BumpUp(s, retval, &k);
+		break;
+	    }
+	    ++digit;
+	    *s++ = '0' + digit;
+	    break;
+	}
+
+	/*
+	 * Have we converted all the requested digits?
+	 */
+	*s++ = '0' + digit;
+	if (i == ilim) {
+	    if (2*b > S
+		|| (2*b == S && (digit & 1) != 0)) {
+		s = BumpUp(s, retval, &k);
+	    }
+	    break;
+	}
+	
+	/* Advance to the next digit */
+	
+	b = 10 * b;
+	mplus = 10 * mplus;
+	mminus = 10 * mminus;
+	++i;
+    }
+
+    /* 
+     * Endgame - store the location of the decimal point and the end of the
+     * string.
+     */
+    *s = '\0';
+    *decpt = k;
+    if (endPtr) {
+	*endPtr = s;
+    }
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * StrictInt64Conversion --
+ *
+ *	Converts a double-precision number to a fixed-length string of
+ *	'ilim' digits that reconverts exactly to the given number.
+ *	('ilim' should be replaced with 'ilim1' in the case where
+ *	log10(d) has been overestimated).  The numerator and
+ *	denominator in David Gay's conversion algorithm are known to fit
+ *	in Tcl_WideUInt, giving considerably faster arithmetic than mp_int's.
+ *
+ * Results:
+ *	Returns the string of significant decimal digits, in newly
+ *	allocated memory
+ *
+ * Side effects:
+ *	Stores the location of the decimal point in '*decpt' and the
+ *      location of the terminal null byte in '*endPtr'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+StrictInt64Conversion(Double* dPtr,
+				/* Original number to convert */
+		      int convType,
+				/* Type of conversion (shortest, Steele,
+				   E format, F format) */
+		      Tcl_WideUInt bw,
+				/* Integer significand */
+		      int b2, int b5,
+				/* Scale factor for the significand
+				 * in the numerator */
+		      int s2, int s5,
+				/* Scale factors for the denominator */
+		      int k,
+				/* Number of output digits before the decimal
+				 * point */
+		      int len,
+				/* Number of digits to allocate */
+		      int ilim,
+				/* Number of digits to convert if b >= s */
+		      int ilim1,
+				/* Number of digits to convert if b < s */
+		      int* decpt,
+				/* OUTPUT: Position of the decimal point */
+		      char** endPtr)
+				/* OUTPUT: Position of the terminal '\0'
+				 *         at the end of the returned string */
+{
+    
+    char* retval = ckalloc(len + 1);
+				/* Output buffer */
+    Tcl_WideUInt b = (bw * wuipow5[b5]) << b2;
+				/* Numerator of the fraction being converted */
+    Tcl_WideUInt S = wuipow5[s5] << s2;
+				/* Denominator of the fraction being 
+				 * converted */
+    int digit;			/* Current output digit */
+    char* s = retval;		/* Cursor in the output buffer */
+    int i;			/* Current position in the output buffer */
+
+    /* Adjust if the logarithm was guessed wrong */
+
+    if (b < S) {
+	b = 10 * b;
+	ilim = ilim1;
+	--k;
+    }
+
+    /* Loop through the digits */
+
+    i = 1;
+    for (;;) {
+	digit = (int)(b / S);
+	if (digit > 10) {
+	    Tcl_Panic("wrong digit!");
+	}
+	b = b % S;
+
+	/*
+	 * Have we converted all the requested digits?
+	 */
+	*s++ = '0' + digit;
+	if (i == ilim) {
+	    if (2*b > S
+		|| (2*b == S && (digit & 1) != 0)) {
+		s = BumpUp(s, retval, &k);
+	    } else {
+		while (*--s == '0') {
+		    /* do nothing */
+		}
+		++s;
+	    }
+	    break;
+	}
+	
+	/* Advance to the next digit */
+	
+	b = 10 * b;
+	++i;
+    }
+
+    /* 
+     * Endgame - store the location of the decimal point and the end of the
+     * string.
+     */
+    *s = '\0';
+    *decpt = k;
+    if (endPtr) {
+	*endPtr = s;
+    }
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShouldBankerRoundUpPowD --
+ *
+ *	Test whether bankers' rounding should round a digit up. Assumption
+ *	is made that the denominator of the fraction being tested is
+ *	a power of 2**DIGIT_BIT.
+ *
+ * Results:
+ *	Returns 1 iff the fraction is more than 1/2, or if the fraction
+ *	is exactly 1/2 and the digit is odd.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+ShouldBankerRoundUpPowD(mp_int* b,
+				/* Numerator of the fraction */
+			int sd,	/* Denominator is 2**(sd*DIGIT_BIT) */
+			int isodd)
+				/* 1 if the digit is odd, 0 if even */
+{
+    int i;
+    static const mp_digit topbit = (1<<(DIGIT_BIT-1));
+    if (b->used < sd || (b->dp[sd-1] & topbit) == 0) {
+	return 0;
+    }
+    if (b->dp[sd-1] != topbit) {
+	return 1;
+    }
+    for (i = sd-2; i >= 0; --i) {
+	if (b->dp[i] != 0) {
+	    return 1;
+	}
+    }
+    return isodd;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShouldBankerRoundUpToNextPowD --
+ *
+ *	Tests whether bankers' rounding will round down in the
+ *	"denominator is a power of 2**MP_DIGIT" case.
+ *
+ * Results:
+ *	Returns 1 if the rounding will be performed - which increases the
+ *	digit by one - and 0 otherwise.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+ShouldBankerRoundUpToNextPowD(mp_int* b,
+				/* Numerator of the fraction */
+			      mp_int* m,
+				/* Numerator of the rounding tolerance */
+			      int sd, 
+				/* Common denominator is 2**(sd*DIGIT_BIT) */
+			      int convType,
+				/* Conversion type: STEELE defeats 
+				 * round-to-even (Not sure why one wants to
+				 * do this; I copied it from Gay) FIXME */
+			      int isodd,
+				/* 1 if the integer significand is odd */
+			      mp_int* temp)
+				/* Work area for the calculation */
+{
+    int i;
+
+    /* 
+     * Compare B and S-m -- which is the same as comparing B+m and S --
+     * which we do by computing b+m and doing a bitwhack compare against
+     * 2**(DIGIT_BIT*sd)
+     */
+    mp_add(b, m, temp);
+    if (temp->used <= sd) {	/* too few digits to be > S */
+	return 0;
+    }
+    if (temp->used > sd+1 || temp->dp[sd] > 1) {
+				/* >= 2s */
+	return 1;
+    }
+    for (i = sd-1; i >= 0; --i) {
+				/* check for ==s */
+	if (temp->dp[i] != 0) {	/* > s */
+	    return 1;
+	}
+    }
+    if (convType == TCL_DD_STEELE0) {
+				/* biased rounding */
+	return 0;
+    }
+    return isodd;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShorteningBignumConversionPowD --
+ *
+ *	Converts a double-precision number to the shortest string of
+ *	digits that reconverts exactly to the given number, or to
+ *	'ilim' digits if that will yield a shorter result. The denominator
+ *	in David Gay's conversion algorithm is known to be a power of
+ *	2**DIGIT_BIT, and hence the division in the main loop may be replaced
+ *	by a digit shift and mask.
+ *
+ * Results:
+ *	Returns the string of significant decimal digits, in newly
+ *	allocated memory
+ *
+ * Side effects:
+ *	Stores the location of the decimal point in '*decpt' and the
+ *      location of the terminal null byte in '*endPtr'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+ShorteningBignumConversionPowD(Double* dPtr,
+				/* Original number to convert */
+			       int convType,
+				/* Type of conversion (shortest, Steele,
+				   E format, F format) */
+			       Tcl_WideUInt bw,
+				/* Integer significand */
+			       int b2, int b5,
+				/* Scale factor for the significand
+				 * in the numerator */
+			       int m2plus, int m2minus, int m5,
+				/* Scale factors for 1/2 ulp in
+				 * the numerator (will be different if
+				 * bw == 1 */
+			       int sd,
+				/* Scale factor for the denominator */
+			       int k,
+				/* Number of output digits before the decimal
+				 * point */
+			       int len,
+				/* Number of digits to allocate */
+			       int ilim,
+				/* Number of digits to convert if b >= s */
+			       int ilim1,
+				/* Number of digits to convert if b < s */
+			       int* decpt,
+				/* OUTPUT: Position of the decimal point */
+			       char** endPtr)
+				/* OUTPUT: Position of the terminal '\0'
+				 *         at the end of the returned string */
+{
+    
+    char* retval = ckalloc(len + 1);
+				/* Output buffer */
+    mp_int b;			/* Numerator of the fraction being converted */
+    mp_int mplus, mminus;	/* Bounds for roundoff */
+    mp_digit digit;		/* Current output digit */
+    char* s = retval;		/* Cursor in the output buffer */
+    int i;			/* Index in the output buffer */
+    mp_int temp;
+    int r1;
+
+    /* 
+     * b = bw * 2**b2 * 5**b5
+     * mminus = 5**m5
+     */
+
+    TclBNInitBignumFromWideUInt(&b, bw);
+    mp_init_set_int(&mminus, 1);
+    MulPow5(&b, b5, &b);
+    mp_mul_2d(&b, b2, &b);
+
+    /* Adjust if the logarithm was guessed wrong */
+
+    if (b.used <= sd) {
+	mp_mul_d(&b, 10, &b);
+	++m2plus; ++m2minus; ++m5;
+	ilim = ilim1;
+	--k;
+    }
+
+    /*
+     * mminus = 5**m5 * 2**m2minus
+     * mplus = 5**m5 * 2**m2plus
+     */
+
+    mp_mul_2d(&mminus, m2minus, &mminus);
+    MulPow5(&mminus, m5, &mminus);
+    if (m2plus > m2minus) {
+	mp_init_copy(&mplus, &mminus);
+	mp_mul_2d(&mplus, m2plus-m2minus, &mplus);
+    }
+    mp_init(&temp);
+
+    /* Loop through the digits. Do division and mod by s == 2**(sd*DIGIT_BIT)
+     * by mp_digit extraction */
+
+    i = 0;
+    for (;;) {
+	if (b.used <= sd) {
+	    digit = 0;
+	} else {
+	    digit = b.dp[sd];
+	    if (b.used > sd+1 || digit >= 10) {
+		Tcl_Panic("wrong digit!");
+	    }
+	    --b.used; mp_clamp(&b);
+	}
+
+	/* 
+	 * Does the current digit put us on the low side of the exact value
+	 * but within within roundoff of being exact?
+	 */
+	
+	r1 = mp_cmp_mag(&b, (m2plus > m2minus)? &mplus : &mminus);
+	if (r1 == MP_LT
+	    || (r1 == MP_EQ
+		&& convType != TCL_DD_STEELE0
+		&& (dPtr->w.word1 & 1) == 0)) {
+	    /*
+	     * Make sure we shouldn't be rounding *up* instead,
+	     * in case the next number above is closer
+	     */
+	    if (ShouldBankerRoundUpPowD(&b, sd, digit&1)) {
+		++digit;
+		if (digit == 10) {
+		    *s++ = '9';
+		    s = BumpUp(s, retval, &k);
+		    break;
+		}
+	    }
+
+	    /* Stash the last digit */
+
+	    *s++ = '0' + digit;
+	    break;
+	}
+
+	/*
+	 * Does one plus the current digit put us within roundoff of the
+	 * number?
+	 */
+	
+	if (ShouldBankerRoundUpToNextPowD(&b, &mminus, sd, 
+					   convType, dPtr->w.word1 & 1,
+					   &temp)) {
+	    if (digit == 9) {
+		*s++ = '9';
+		s = BumpUp(s, retval, &k);
+		break;
+	    }
+	    ++digit;
+	    *s++ = '0' + digit;
+	    break;
+	}
+
+	/*
+	 * Have we converted all the requested digits?
+	 */
+	*s++ = '0' + digit;
+	if (i == ilim) {
+	    if (ShouldBankerRoundUpPowD(&b, sd, digit&1)) {
+		s = BumpUp(s, retval, &k);
+	    }
+	    break;
+	}
+	
+	/* Advance to the next digit */
+	
+	mp_mul_d(&b, 10, &b);
+	mp_mul_d(&mminus, 10, &mminus);
+	if (m2plus > m2minus) {
+	    mp_mul_2d(&mminus, m2plus-m2minus, &mplus);
+	}
+	++i;
+    }
+
+    /* 
+     * Endgame - store the location of the decimal point and the end of the
+     * string.
+     */
+    if (m2plus > m2minus) {
+	mp_clear(&mplus);
+    }
+    mp_clear_multi(&b, &mminus, &temp, NULL);
+    *s = '\0';
+    *decpt = k;
+    if (endPtr) {
+	*endPtr = s;
+    }
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * StrictBignumConversionPowD --
+ *
+ *	Converts a double-precision number to a fixed-lengt string of
+ *	'ilim' digits (or 'ilim1' if log10(d) has been overestimated.)
+ *	The denominator in David Gay's conversion algorithm is known to
+ *	be a power of 2**DIGIT_BIT, and hence the division in the main 
+ *	loop may be replaced by a digit shift and mask.
+ *
+ * Results:
+ *	Returns the string of significant decimal digits, in newly
+ *	allocated memory.
+ *
+ * Side effects:
+ *	Stores the location of the decimal point in '*decpt' and the
+ *      location of the terminal null byte in '*endPtr'.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+StrictBignumConversionPowD(Double* dPtr,
+				/* Original number to convert */
+			   int convType,
+				/* Type of conversion (shortest, Steele,
+				   E format, F format) */
+			   Tcl_WideUInt bw,
+				/* Integer significand */
+			   int b2, int b5,
+				/* Scale factor for the significand
+				 * in the numerator */
+			   int sd,
+				/* Scale factor for the denominator */
+			   int k,
+				/* Number of output digits before the decimal
+				 * point */
+			   int len,
+				/* Number of digits to allocate */
+			   int ilim,
+				/* Number of digits to convert if b >= s */
+			   int ilim1,
+				/* Number of digits to convert if b < s */
+			   int* decpt,
+				/* OUTPUT: Position of the decimal point */
+			   char** endPtr)
+				/* OUTPUT: Position of the terminal '\0'
+				 *         at the end of the returned string */
+{
+    
+    char* retval = ckalloc(len + 1);
+				/* Output buffer */
+    mp_int b;			/* Numerator of the fraction being converted */
+    mp_digit digit;		/* Current output digit */
+    char* s = retval;		/* Cursor in the output buffer */
+    int i;			/* Index in the output buffer */
+    mp_int temp;
+
+    /* 
+     * b = bw * 2**b2 * 5**b5
+     */
+
+    TclBNInitBignumFromWideUInt(&b, bw);
+    MulPow5(&b, b5, &b);
+    mp_mul_2d(&b, b2, &b);
+
+    /* Adjust if the logarithm was guessed wrong */
+
+    if (b.used <= sd) {
+	mp_mul_d(&b, 10, &b);
+	ilim = ilim1;
+	--k;
+    }
+    mp_init(&temp);
+
+    /* 
+     * Loop through the digits. Do division and mod by s == 2**(sd*DIGIT_BIT)
+     * by mp_digit extraction 
+     */
+
+    i = 1;
+    for (;;) {
+	if (b.used <= sd) {
+	    digit = 0;
+	} else {
+	    digit = b.dp[sd];
+	    if (b.used > sd+1 || digit >= 10) {
+		Tcl_Panic("wrong digit!");
+	    }
+	    --b.used; mp_clamp(&b);
+	}
+
+	/*
+	 * Have we converted all the requested digits?
+	 */
+	*s++ = '0' + digit;
+	if (i == ilim) {
+	    if (ShouldBankerRoundUpPowD(&b, sd, digit&1)) {
+		s = BumpUp(s, retval, &k);
+	    } else {
+		while (*--s == '0') {
+		    /* do nothing */
+		}
+		++s;
+	    }
+	    break;
+	}
+	
+	/* Advance to the next digit */
+	
+	mp_mul_d(&b, 10, &b);
+	++i;
+    }
+
+    /* 
+     * Endgame - store the location of the decimal point and the end of the
+     * string.
+     */
+    mp_clear_multi(&b, &temp, NULL);
+    *s = '\0';
+    *decpt = k;
+    if (endPtr) {
+	*endPtr = s;
+    }
+    return retval;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShouldBankerRoundUp --
+ *
+ *	Tests whether a digit should be rounded up or down when finishing
+ *	bignum-based floating point conversion.
+ *
+ * Results:
+ *	Returns 1 if the number needs to be rounded up, 0 otherwise.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+ShouldBankerRoundUp(mp_int* twor,
+				/* 2x the remainder from thd division that
+				 * produced the last digit */
+		    mp_int* S,	/* Denominator */
+		    int isodd)	/* Flag == 1 if the last digit is odd */
+{
+    int r = mp_cmp_mag(twor, S);
+    switch (r) {
+    case MP_LT:
+	return 0;
+    case MP_EQ:
+	return isodd;
+    case MP_GT:
+	return 1;
+    }
+    Tcl_Panic("in ShouldBankerRoundUp, trichotomy fails!");
+    return 0;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShouldBankerRoundUpToNext --
+ *
+ *	Tests whether the remainder is great enough to force rounding
+ *	to the next higher digit.
+ *
+ * Results:
+ *	Returns 1 if the number should be rounded up, 0 otherwise.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static int
+ShouldBankerRoundUpToNext(mp_int* b,
+				/* Remainder from the division that produced
+				 * the last digit. */
+			  mp_int* m,
+				/* Numerator of the rounding tolerance */
+			  mp_int* S,
+				/* Denominator */
+			  int convType,
+				/* Conversion type: STEELE0 defeats
+				 * round-to-even. (Not sure why one would
+				 * want this; I coped it from Gay. FIXME */
+			  int isodd,
+				/* 1 if the integer significand is odd */
+			  mp_int* temp)
+				/* Work area needed for the calculation */
+{
+    int r;
+    /* Compare b and S-m: this is the same as comparing B+m and S. */
+    mp_add(b, m, temp);
+    r = mp_cmp_mag(temp, S);
+    switch(r) {
+    case MP_LT:
+	return 0;
+    case MP_EQ:
+	if (convType == TCL_DD_STEELE0) {
+	    return 0;
+	} else {
+	    return isodd;
+	}
+    case MP_GT:
+	return 1;
+    }
+    Tcl_Panic("in ShouldBankerRoundUpToNext, trichotomy fails!");
+    return 0;
+}
+		 
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * ShorteningBignumConversion --
+ *
+ *	Convert a floating point number to a variable-length digit string
+ *	using the multiprecision method.
+ *
+ * Results:
+ *	Returns the string of digits.
+ *
+ * Side effects:
+ *	Stores the position of the decimal point in *decpt.
+ *	Stores a pointer to the end of the number in *endPtr.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+ShorteningBignumConversion(Double* dPtr,
+				/* Original number being converted */
+			   int convType,
+				/* Conversion type */
+			   Tcl_WideUInt bw,
+				/* Integer significand and exponent */
+			   int b2,
+				/* Scale factor for the significand */
+			   int m2plus, int m2minus,
+				/* Scale factors for 1/2 ulp in numerator */
+			   int s2, int s5,
+				/* Scale factors for denominator */
+			   int k,
+				/* Guessed position of the decimal point */
+			   int len,
+				/* Size of the digit buffer to allocate */
+			   int ilim,
+				/* Number of digits to convert if b >= s */
+			   int ilim1,
+				/* Number of digits to convert if b < s */
+			   int* decpt,
+				/* OUTPUT: Position of the decimal point */
+			   char** endPtr)
+				/* OUTPUT: Pointer to the end of the number */
+{
+    char* retval = ckalloc(len+1);
+				/* Buffer of digits to return */
+    char* s = retval;		/* Cursor in the return value */
+    mp_int b;			/* Numerator of the result */
+    mp_int mminus;		/* 1/2 ulp below the result */
+    mp_int mplus;		/* 1/2 ulp above the result */
+    mp_int S;			/* Denominator of the result */
+    mp_int dig;			/* Current digit of the result */
+    int digit;			/* Current digit of the result */
+    mp_int temp;		/* Work area */
+    int minit = 1;		/* Fudge factor for when we misguess k */
+    int i;
+    int r1;
+
+    /*
+     * b = bw * 2**b2 * 5**b5
+     * S = 2**s2 * 5*s5
+     */
+
+    TclBNInitBignumFromWideUInt(&b, bw);
+    mp_mul_2d(&b, b2, &b);
+    mp_init_set_int(&S, 1);
+    MulPow5(&S, s5, &S); mp_mul_2d(&S, s2, &S);
+
+    /*
+     * Handle the case where we guess the position of the decimal point 
+     * wrong. 
+     */
+    
+    if (mp_cmp_mag(&b, &S) == MP_LT) {
+	mp_mul_d(&b, 10, &b);
+	minit = 10;
+	ilim =ilim1;
+	--k;
+    }
+
+    /* mminus = 2**m2minus * 5**m5 */
+
+    mp_init_set_int(&mminus, minit);
+    mp_mul_2d(&mminus, m2minus, &mminus);
+    if (m2plus > m2minus) {
+	mp_init_copy(&mplus, &mminus);
+	mp_mul_2d(&mplus, m2plus-m2minus, &mplus);
+    }
+    mp_init(&temp);
+
+    /* Loop through the digits */
+
+    mp_init(&dig);
+    i = 1;
+    for (;;) {
+	mp_div(&b, &S, &dig, &b);
+	if (dig.used > 1 || dig.dp[0] >= 10) {
+	    Tcl_Panic("wrong digit!");
+	}
+	digit = dig.dp[0];
+
+	/* 
+	 * Does the current digit leave us with a remainder small enough to
+	 * round to it?
+	 */
+
+	r1 = mp_cmp_mag(&b, (m2plus > m2minus)? &mplus : &mminus);
+	if (r1 == MP_LT
+	    || (r1 == MP_EQ
+		&& convType != TCL_DD_STEELE0
+		&& (dPtr->w.word1 & 1) == 0)) {
+	    mp_mul_2d(&b, 1, &b);
+	    if (ShouldBankerRoundUp(&b, &S, digit&1)) {
+		++digit;
+		if (digit == 10) {
+		    *s++ = '9';
+		    s = BumpUp(s, retval, &k);
+		    break;
+		}
+	    }
+	    *s++ = '0' + digit;
+	    break;
+	}
+
+	/*
+	 * Does the current digit leave us with a remainder large enough
+	 * to commit to rounding up to the next higher digit?
+	 */
+
+	if (ShouldBankerRoundUpToNext(&b, &mminus, &S, convType,
+				      dPtr->w.word1 & 1, &temp)) {
+	    ++digit;
+	    if (digit == 10) {
+		*s++ = '9';
+		s = BumpUp(s, retval, &k);
+		break;
+	    }
+	    *s++ = '0' + digit;
+	    break;
+	}
+
+	/* Have we converted all the requested digits? */
+
+	*s++ = '0' + digit;
+	if (i == ilim) {
+	    mp_mul_2d(&b, 1, &b);
+	    if (ShouldBankerRoundUp(&b, &S, digit&1)) {
+		s = BumpUp(s, retval, &k);  
+	    }
+	    break;
+	}
+
+	/* Advance to the next digit */
+
+	if (s5 > 0) {
+
+	    /* Can possibly shorten the denominator */
+	    mp_mul_2d(&b, 1, &b);
+	    mp_mul_2d(&mminus, 1, &mminus);
+	    if (m2plus > m2minus) {
+		mp_mul_2d(&mplus, 1, &mplus);
+	    }
+	    mp_div_d(&S, 5, &S, NULL);
+	    --s5;
+	    /* 
+	     * IDEA: It might possibly be a win to fall back to
+	     *       int64 arithmetic here if S < 2**64/10. But it's
+	     *       a win only for a fairly narrow range of magnitudes
+	     *       so perhaps not worth bothering. We already know that
+	     *       we shorten the denominator by at least 1 mp_digit, perhaps
+	     *       2. as we do the conversion for 17 digits of significance.
+	     * Possible savings:
+	     * 10**26   1 trip through loop before fallback possible
+	     * 10**27   1 trip
+	     * 10**28   2 trips     
+	     * 10**29   3 trips
+	     * 10**30   4 trips
+	     * 10**31   5 trips
+	     * 10**32   6 trips
+	     * 10**33   7 trips
+	     * 10**34   8 trips
+	     * 10**35   9 trips
+	     * 10**36  10 trips
+	     * 10**37  11 trips
+	     * 10**38  12 trips
+	     * 10**39  13 trips
+	     * 10**40  14 trips
+	     * 10**41  15 trips
+	     * 10**42  16 trips
+	     * thereafter  no gain.
+	     */
+	} else {
+	    mp_mul_d(&b, 10, &b);
+	    mp_mul_d(&mminus, 10, &mminus);
+	    if (m2plus > m2minus) {
+		mp_mul_2d(&mplus, 10, &mplus);
+	    }
+	}
+
+	++i;
+    }
+
+
+    /* 
+     * Endgame - store the location of the decimal point and the end of the
+     * string.
+     */
+    if (m2plus > m2minus) {
+	mp_clear(&mplus);
+    }
+    mp_clear_multi(&b, &mminus, &temp, &dig, &S, NULL);
+    *s = '\0';
+    *decpt = k;
+    if (endPtr) {
+	*endPtr = s;
+    }
+    return retval;
+
+}
+		 
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * StrictBignumConversion --
+ *
+ *	Convert a floating point number to a fixed-length digit string
+ *	using the multiprecision method.
+ *
+ * Results:
+ *	Returns the string of digits.
+ *
+ * Side effects:
+ *	Stores the position of the decimal point in *decpt.
+ *	Stores a pointer to the end of the number in *endPtr.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+inline static char*
+StrictBignumConversion(Double* dPtr,
+				/* Original number being converted */
+		       int convType,
+				/* Conversion type */
+		       Tcl_WideUInt bw,
+				/* Integer significand and exponent */
+		       int b2,	/* Scale factor for the significand */
+		       int s2, int s5,
+				/* Scale factors for denominator */
+		       int k,	/* Guessed position of the decimal point */
+		       int len,	/* Size of the digit buffer to allocate */
+		       int ilim,
+				/* Number of digits to convert if b >= s */
+		       int ilim1,
+				/* Number of digits to convert if b < s */
+		       int* decpt,
+				/* OUTPUT: Position of the decimal point */
+		       char** endPtr)
+				/* OUTPUT: Pointer to the end of the number */
+{
+    char* retval = ckalloc(len+1);
+				/* Buffer of digits to return */
+    char* s = retval;		/* Cursor in the return value */
+    mp_int b;			/* Numerator of the result */
+    mp_int S;			/* Denominator of the result */
+    mp_int dig;			/* Current digit of the result */
+    int digit;			/* Current digit of the result */
+    mp_int temp;		/* Work area */
+    int g;			/* Size of the current digit groun */
+    int i, j;
+    
+    /*
+     * b = bw * 2**b2 * 5**b5
+     * S = 2**s2 * 5*s5
+     */
+
+    mp_init_multi(&temp, &dig, NULL);
+    TclBNInitBignumFromWideUInt(&b, bw);
+    mp_mul_2d(&b, b2, &b);
+    mp_init_set_int(&S, 1);
+    MulPow5(&S, s5, &S); mp_mul_2d(&S, s2, &S);
+
+    /*
+     * Handle the case where we guess the position of the decimal point 
+     * wrong. 
+     */
+    
+    if (mp_cmp_mag(&b, &S) == MP_LT) {
+	mp_mul_d(&b, 10, &b);
+	ilim =ilim1;
+	--k;
+    }
+
+    /* Convert the leading digit */
+
+    i = 0;
+    mp_div(&b, &S, &dig, &b);
+    if (dig.used > 1 || dig.dp[0] >= 10) {
+	Tcl_Panic("wrong digit!");
+    }
+    digit = dig.dp[0];
+
+    /* Is a single digit all that was requested? */
+
+    *s++ = '0' + digit;
+    if (++i >= ilim) {
+	mp_mul_2d(&b, 1, &b);
+	if (ShouldBankerRoundUp(&b, &S, digit&1)) {
+	    s = BumpUp(s, retval, &k);  
+	}
+    } else {
+
+	for (;;) {
+
+	    /* Shift by a group of digits. */
+
+	    g = ilim - i;
+	    if (g > DIGIT_GROUP) {
+		g = DIGIT_GROUP;
+	    }
+	    if (s5 >= g) {
+		mp_div_d(&S, dpow5[g], &S, NULL);
+		s5 -= g;
+	    } else if (s5 > 0) {
+		mp_div_d(&S, dpow5[s5], &S, NULL);
+		mp_mul_d(&b, dpow5[g - s5], &b);
+		s5 = 0;
+	    } else {
+		mp_mul_d(&b, dpow5[g], &b);
+	    }
+	    mp_mul_2d(&b, g, &b);
+	    
+	    /*
+	     * As with the shortening bignum conversion, it's possible at
+	     * this point that we will have reduced the denominator to
+	     * less than 2**64/10, at which point it would be possible to
+	     * fall back to to int64 arithmetic. But the potential payoff
+	     * is tremendously less - unless we're working in F format -
+	     * because we know that three groups of digits will always
+	     * suffice for %#.17e, the longest format that doesn't introduce
+	     * empty precision.
+	     */
+
+	    /* Extract the next group of digits */
+	    
+	    mp_div(&b, &S, &dig, &b);
+	    if (dig.used > 1) {
+		Tcl_Panic("wrong digit!");
+	    }
+	    digit = dig.dp[0];
+	    for (j = g-1; j >= 0; --j) {
+		int t = itens[j];
+		*s++ = digit / t + '0';
+		digit %= t;
+	    }
+	    i += g;
+	    
+	    /* Have we converted all the requested digits? */
+	    
+	    if (i == ilim) {
+		mp_mul_2d(&b, 1, &b);
+		if (ShouldBankerRoundUp(&b, &S, digit&1)) {
+		    s = BumpUp(s, retval, &k);  
+		} else {
+		    while (*--s == '0') {
+			/* do nothing */
+		    }
+		    ++s;
+		}	
+	    break;
+	    }
+	}
+    }
+    /* 
+     * Endgame - store the location of the decimal point and the end of the
+     * string.
+     */
+    mp_clear_multi(&b, &S, &temp, &dig, NULL);
+    *s = '\0';
+    *decpt = k;
+    if (endPtr) {
+	*endPtr = s;
+    }
+    return retval;
+
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * TclDoubleDigits --
+ *
+ *	Core of Tcl's conversion of double-precision floating point numbers
+ *	to decimal.
+ *
+ * Results:
+ *	Returns a newly-allocated string of digits.
+ *
+ * Side effects:
+ *	Sets *decpt to the index of the character in the string before the
+ *	place that the decimal point should go. If 'endPtr' is not NULL,
+ *	sets endPtr to point to the terminating '\0' byte of the string.
+ *	Sets *sign to 1 if a minus sign should be printed with the number,
+ *	or 0 if a plus sign (or no sign) should appear.
+ *
+ * This function is a service routine that produces the string of digits
+ * for floating-point-to-decimal conversion. It can do a number of things
+ * according to the 'flags' argument. Valid values for 'flags' include:
+ *	TCL_DD_SHORTEST - This is the default for floating point conversion
+ *		if ::tcl_precision is 0. It constructs the shortest string
+ *		of digits that will reconvert to the given number when scanned.
+ *		For floating point numbers that are exactly between two
+ *		decimal numbers, it resolves using the 'round to even' rule.
+ *		With this value, the 'ndigits' parameter is ignored.
+ *	TCL_DD_STEELE - This value is not recommended and may be removed
+ *		in the future. It follows the conversion algorithm outlined
+ *		in "How to Print Floating-Point Numbers Accurately" by
+ *		Guy L. Steele, Jr. and Jon L. White [Proc. ACM SIGPLAN '90, 
+ *		pp. 112-126]. This rule has the effect of rendering 1e23
+ *		as 9.9999999999999999e22 - which is a 'better' approximation
+ *		in the sense that it will reconvert correctly even if
+ *		a subsequent input conversion is 'round up' or 'round down'
+ *		rather than 'round to nearest', but is surprising otherwise.
+ *	TCL_DD_E_FORMAT - This value is used to prepare numbers for %e
+ *		format conversion (or for default floating->string if
+ *		tcl_precision is not 0). It constructs a string of at most
+ *		'ndigits' digits, choosing the one that is closest to the
+ *		given number (and resolving ties with 'round to even').
+ *		It is allowed to return fewer than 'ndigits' if the number
+ *		converts exactly; if the TCL_DD_E_FORMAT|TCL_DD_SHORTEN_FLAG 
+ *		is supplied instead, it also returns fewer digits if the 
+ *		shorter string will still reconvert to the given input number.
+ *		In any case, strings of trailing zeroes are suppressed.
+ *	TCL_DD_F_FORMAT - This value is used to prepare numbers for %f
+ *		format conversion. It requests that conversion proceed until
+ *		'ndigits' digits after the decimal point have been converted.
+ *		It is possible for this format to result in a zero-length 
+ *		string if the number is sufficiently small. Again, it
+ *		is permissible for TCL_DD_F_FORMAT to return fewer digits
+ *		for a number that converts exactly, and changing the
+ *		argument to TCL_DD_F_FORMAT|TCL_DD_SHORTEN_FLAG will allow
+ *		the routine also to return fewer digits if the shorter string
+ *		will still reconvert without loss to the given input number.
+ *		Strings of trailing zeroes are suppressed.
+ *
+ *	To any of these flags may be OR'ed TCL_DD_NO_QUICK; this flag
+ *	requires all calculations to be done in exact arithmetic. Normally,
+ *	E and F format with fewer than about 14 digits will be done with
+ *	a quick floating point approximation and fall back on the exact
+ *	arithmetic only if the input number is close enough to the
+ *	midpoint between two decimal strings that more precision is needed
+ *	to resolve which string is correct.
+ *
+ * The value stored in the 'decpt' argument on return may be negative 
+ * (indicating that the decimal point falls to the left of the string) 
+ * or greater than the length of the string.  In addition, the value -9999
+ * is used as a sentinel to indicate that the string is one of the special
+ * values "Infinity" and "NaN", and that no decimal point should be inserted.
+ * 
+ *-----------------------------------------------------------------------------
+ */
+char*
+TclDoubleDigits(double dv,	/* Number to convert */
+		int ndigits,	/* Number of digits requested */
+		int flags,	/* Conversion flags */
+		int* decpt,	/* OUTPUT: Position of the decimal point */
+		int* sign,	/* OUTPUT: 1 if the result is negative */
+		char** endPtr)	/* OUTPUT: If not NULL, receives a pointer
+				 *         to one character beyond the end
+				 *         of the returned string */
+{
+    int convType = (flags & TCL_DD_CONVERSION_TYPE_MASK);
+				/* Type of conversion being performed
+				 * TCL_DD_SHORTEST0
+				 * TCL_DD_STEELE0
+				 * TCL_DD_E_FORMAT
+				 * TCL_DD_F_FORMAT */
+    Double d;			/* Union for deconstructing doubles */
+    Tcl_WideUInt bw;		/* Integer significand */
+    int be;			/* Power of 2 by which b must be multiplied */
+    int bbits;			/* Number of bits needed to represent b */
+    int denorm;			/* Flag == 1 iff the input number was
+				 * denormalized */
+    int k;			/* Estimate of floor(log10(d)) */
+    int k_check;		/* Flag == 1 if d is near enough to a 
+				 * power of ten that k must be checked */
+    int b2, b5, s2, s5;		/* Powers of 2 and 5 in the numerator and
+				 * denominator of intermediate results */
+    int ilim = -1, ilim1 = -1;	/* Number of digits to convert, and number
+				 * to convert if log10(d) has been 
+				 * overestimated */
+    char* retval;		/* Return value from this function */
+    int i = -1;
+
+    /* Put the input number into a union for bit-whacking */
+
+    d.d = dv;
+
+    /* 
+     * Handle the cases of negative numbers (by taking the absolute value:
+     * this includes -Inf and -NaN!), infinity, Not a Number, and zero.
+     */
+
+    TakeAbsoluteValue(&d, sign);
+    if ((d.w.word0 & EXP_MASK) == EXP_MASK) {
+	return FormatInfAndNaN(&d, decpt, endPtr);
+    }
+    if (d.d == 0.0) {
+	return FormatZero(decpt, endPtr);
+    }
+
+    /* 
+     * Unpack the floating point into a wide integer and an exponent.
+     * Determine the number of bits that the big integer requires, and
+     * compute a quick approximation (which may be one too high) of
+     * ceil(log10(d.d)).
+     */
+    denorm = ((d.w.word0 & EXP_MASK) == 0);
+    DoubleToExpAndSig(d.d, &bw, &be, &bbits);
+    k = ApproximateLog10(bw, be, bbits);
+    k = BetterLog10(d.d, k, &k_check);
+
+    /* At this point, we have:
+     *	  d is the number to convert.
+     *    bw are significand and exponent: d == bw*2**be, 
+     *    bbits is the length of bw: 2**bbits-1 <= bw < 2**bbits
+     *	  k is either ceil(log10(d)) or ceil(log10(d))+1. k_check is 0
+     *      if we know that k is exactly ceil(log10(d)) and 1 if we need to
+     *	    check.
+     *    We want a rational number 
+     *      r = b * 10**(1-k) = bw * 2**b2 * 5**b5 / (2**s2 / 5**s5),
+     *    with b2, b5, s2, s5 >= 0.  Note that the most significant decimal
+     *    digit is floor(r) and that successive digits can be obtained
+     *    by setting r <- 10*floor(r) (or b <= 10 * (b % S)).
+     *    Find appropriate b2, b5, s2, s5.
+     */
+
+    ComputeScale(be, k, &b2, &b5, &s2, &s5);
+
+    /*
+     * Correct an incorrect caller-supplied 'ndigits'.
+     * Also determine:
+     *	i = The maximum number of decimal digits that will be returned in the
+     *      formatted string.  This is k + 1 + ndigits for F format, 18 for
+     *	    shortest and Steele, and ndigits for E format.
+     *  ilim = The number of significant digits to convert if
+     *         k has been guessed correctly. This is -1 for shortest and Steele
+     *         (which stop when all significance has been lost), 'ndigits'
+     *	       for E format, and 'k + 1 + ndigits' for F format.
+     *  ilim1 = The minimum number of significant digits to convert if
+     *	        k has been guessed 1 too high. This, too, is -1 for shortest
+     *	        and Steele, and 'ndigits' for E format, but it's 'ndigits-1'
+     *	        for F format.
+     */
+
+    SetPrecisionLimits(convType, k, &ndigits, &i, &ilim, &ilim1);
+
+    /* 
+     * Try to do low-precision conversion in floating point rather
+     * than resorting to expensive multiprecision arithmetic
+     */
+    if (ilim >= 0 && ilim <= QUICK_MAX && !(flags & TCL_DD_NO_QUICK)) {
+	if ((retval = QuickConversion(d.d, k, k_check, flags,
+				      i, ilim, ilim1,
+				      decpt, endPtr)) != NULL) {
+	    return retval;
+	}
+    }
+
+    /* 
+     * For shortening conversions, determine the upper and lower bounds
+     * for the remainder at which we can stop.
+     *   m+ = (2**m2plus * 5**m5) / (2**s2 * 5**s5) is the limit on the
+     *        high side, and
+     *   m- = (2**m2minus * 5**m5) / (2**s2 * 5**s5) is the limit on the
+     *        low side.
+     *   We may need to increase s2 to put m2plus, m2minus, b2 over a
+     *   common denominator.
+     */
+
+    if (flags & TCL_DD_SHORTEN_FLAG) {
+	int m2minus = b2;
+	int m2plus;
+	int m5 = b5;
+	int len = i;
+
+	/* 
+	 * Find the quantity i so that (2**i*5**b5)/(2**s2*5**s5)
+	 * is 1/2 unit in the least significant place of the floating 
+	 * point number.
+	 */
+	if (denorm) {
+	    i = be + EXPONENT_BIAS + (FP_PRECISION-1);
+	} else {
+	    i = 1 + FP_PRECISION - bbits;
+	}
+	b2 += i;
+	s2 += i;
+
+	/* 
+	 * Reduce the fractions to lowest terms, since the above calculation
+	 * may have left excess powers of 2 in numerator and denominator
+	 */
+	CastOutPowersOf2(&b2, &m2minus, &s2);
+
+	/*
+	 * In the special case where bw==1, the nearest floating point number
+	 * to it on the low side is 1/4 ulp below it. Adjust accordingly.
+	 */
+	m2plus = m2minus;
+	if (!denorm && bw == 1) {
+	    ++b2;
+	    ++s2;
+	    ++m2plus;
+	}
+
+	if (s5+1 < N_LOG2POW5
+	    && s2+1 + log2pow5[s5+1] <= 64) {
+	    /*
+	     * If 10*2**s2*5**s5 == 2**(s2+1)+5**(s5+1) fits in a 64-bit
+	     * word, then all our intermediate calculations can be done
+	     * using exact 64-bit arithmetic with no need for expensive
+	     * multiprecision operations. (This will be true for all numbers
+	     * in the range [1.0e-3 .. 1.0e+24]).
+	     */
+
+	    return ShorteningInt64Conversion(&d, convType, bw, b2, b5,
+					     m2plus, m2minus, m5,
+					     s2, s5, k, len, ilim, ilim1, 
+					     decpt, endPtr);
+	} else if (s5 == 0) {
+	    /*
+	     * The denominator is a power of 2, so we can replace division
+	     * by digit shifts. First we round up s2 to a multiple of
+	     * DIGIT_BIT, and adjust m2 and b2 accordingly. Then we launch
+	     * into a version of the comparison that's specialized for
+	     * the 'power of mp_digit in the denominator' case.
+	     */
+	    if (s2 % DIGIT_BIT != 0) {
+		int delta = DIGIT_BIT - (s2 % DIGIT_BIT);
+		b2 += delta;
+		m2plus += delta;
+		m2minus += delta;
+		s2 += delta;
+	    }
+	    return ShorteningBignumConversionPowD(&d, convType, bw, b2, b5,
+						  m2plus, m2minus, m5,
+						  s2/DIGIT_BIT, k, len, 
+						  ilim, ilim1, decpt, endPtr);
+	} else {
+
+	    /* 
+	     * Alas, there's no helpful special case; use full-up
+	     * bignum arithmetic for the conversion
+	     */
+
+	    return ShorteningBignumConversion(&d, convType, bw,
+					      b2, m2plus, m2minus,
+					      s2, s5, k, len,
+					      ilim, ilim1, decpt, endPtr);
+
+	}
+
+    } else {
+
+	/* Non-shortening conversion */
+
+	int len = i;
+
+	/* Reduce numerator and denominator to lowest terms */
+
+	if (b2 >= s2 && s2 > 0) {
+	    b2 -= s2; s2 = 0;
+	} else if (s2 >= b2 && b2 > 0) {
+	    s2 -= b2; b2 = 0;
+	}
+
+	if (s5+1 < N_LOG2POW5
+	    && s2+1 + log2pow5[s5+1] <= 64) {
+	    /*
+	     * If 10*2**s2*5**s5 == 2**(s2+1)+5**(s5+1) fits in a 64-bit
+	     * word, then all our intermediate calculations can be done
+	     * using exact 64-bit arithmetic with no need for expensive
+	     * multiprecision operations.
+	     */
+
+	    return StrictInt64Conversion(&d, convType, bw, b2, b5,
+					 s2, s5, k, len, ilim, ilim1, 
+					 decpt, endPtr);
+
+	} else if (s5 == 0) {
+	    /*
+	     * The denominator is a power of 2, so we can replace division
+	     * by digit shifts. First we round up s2 to a multiple of
+	     * DIGIT_BIT, and adjust m2 and b2 accordingly. Then we launch
+	     * into a version of the comparison that's specialized for
+	     * the 'power of mp_digit in the denominator' case.
+	     */
+	    if (s2 % DIGIT_BIT != 0) {
+		int delta = DIGIT_BIT - (s2 % DIGIT_BIT);
+		b2 += delta;
+		s2 += delta;
+	    }
+	    return StrictBignumConversionPowD(&d, convType, bw, b2, b5,
+					      s2/DIGIT_BIT, k, len, 
+					      ilim, ilim1, decpt, endPtr);
+	} else {
+	    /*
+	     * There are no helpful special cases, but at least we know
+	     * in advance how many digits we will convert. We can run the
+	     * conversion in steps of DIGIT_GROUP digits, so as to
+	     * have many fewer mp_int divisions.
+	     */
+	    return StrictBignumConversion(&d, convType, bw, b2, s2, s5,
+					  k, len, ilim, ilim1, decpt, endPtr);
+	}
+    } 
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitDoubleConversion --
+ *
+ *	Initializes constants that are needed for conversions to and from
+ *	'double'
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The log base 2 of the floating point radix, the number of bits in a
+ *	double mantissa, and a table of the powers of five and ten are
+ *	computed and stored.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclInitDoubleConversion(void)
+{
+    int i;
+    int x;
+    Tcl_WideUInt u;
+    double d;
+
+#ifdef IEEE_FLOATING_POINT
+    union {
+	double dv;
+	Tcl_WideUInt iv;
+    } bitwhack;
+#endif
+
+#if defined(__sgi) && defined(_COMPILER_VERSION)
+    union fpc_csr mipsCR;
+
+    mipsCR.fc_word = get_fpc_csr();
+    mipsCR.fc_struct.flush = 0;
+    set_fpc_csr(mipsCR.fc_word);
+#endif
+
+    /*
+     * Initialize table of powers of 10 expressed as wide integers.
+     */
+
+    maxpow10_wide = (int)
+	    floor(sizeof(Tcl_WideUInt) * CHAR_BIT * log(2.) / log(10.));
+    pow10_wide = (Tcl_WideUInt *)
+	    ckalloc((maxpow10_wide + 1) * sizeof(Tcl_WideUInt));
+    u = 1;
+    for (i = 0; i < maxpow10_wide; ++i) {
+	pow10_wide[i] = u;
+	u *= 10;
+    }
+    pow10_wide[i] = u;
+
+    /*
+     * Determine how many bits of precision a double has, and how many
+     * decimal digits that represents.
+     */
+
+    if (frexp((double) FLT_RADIX, &log2FLT_RADIX) != 0.5) {
+	Tcl_Panic("This code doesn't work on a decimal machine!");
+    }
+    log2FLT_RADIX--;
+    mantBits = DBL_MANT_DIG * log2FLT_RADIX;
+    d = 1.0;
+
+    /*
+     * Initialize a table of powers of ten that can be exactly represented
+     * in a double.
+     */
+
+    x = (int) (DBL_MANT_DIG * log((double) FLT_RADIX) / log(5.0));
+    if (x < MAXPOW) {
+	mmaxpow = x;
+    } else {
+	mmaxpow = MAXPOW;
+    }
+    for (i=0 ; i<=mmaxpow ; ++i) {
+	pow10vals[i] = d;
+	d *= 10.0;
+    }
+
+    /*
+     * Initialize a table of large powers of five.
+     */
+
+    for (i=0; i<9; ++i) {
+	mp_init(pow5 + i);
+    }
+    mp_set(pow5, 5);
+    for (i=0; i<8; ++i) {
+	mp_sqr(pow5+i, pow5+i+1);
+    }
+    mp_init_set_int(pow5_13, 1220703125);
+    for (i = 1; i < 5; ++i) {
+	mp_init(pow5_13 + i);
+	mp_sqr(pow5_13 + i - 1, pow5_13 + i);
+    }
+
+    /*
+     * Determine the number of decimal digits to the left and right of the
+     * decimal point in the largest and smallest double, the smallest double
+     * that differs from zero, and the number of mp_digits needed to represent
+     * the significand of a double.
+     */
+
+    maxDigits = (int) ((DBL_MAX_EXP * log((double) FLT_RADIX)
+	    + 0.5 * log(10.)) / log(10.));
+    minDigits = (int) floor((DBL_MIN_EXP - DBL_MANT_DIG)
+	    * log((double) FLT_RADIX) / log(10.));
+    log10_DIGIT_MAX = (int) floor(DIGIT_BIT * log(2.) / log(10.));
+
+    /*
+     * Nokia 770's software-emulated floating point is "middle endian": the
+     * bytes within a 32-bit word are little-endian (like the native
+     * integers), but the two words of a 'double' are presented most
+     * significant word first.
+     */
+
+#ifdef IEEE_FLOATING_POINT
+    bitwhack.dv = 1.000000238418579;
+				/* 3ff0 0000 4000 0000 */
+    if ((bitwhack.iv >> 32) == 0x3ff00000) {
+	n770_fp = 0;
+    } else if ((bitwhack.iv & 0xffffffff) == 0x3ff00000) {
+	n770_fp = 1;
+    } else {
+	Tcl_Panic("unknown floating point word order on this machine");
+    }
+#endif
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFinalizeDoubleConversion --
+ *
+ *	Cleans up this file on exit.
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	Memory allocated by TclInitDoubleConversion is freed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclFinalizeDoubleConversion(void)
+{
+    int i;
+
+    ckfree((char *) pow10_wide);
+    for (i=0; i<9; ++i) {
+	mp_clear(pow5 + i);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_InitBignumFromDouble --
+ *
+ *	Extracts the integer part of a double and converts it to an arbitrary
+ *	precision integer.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Initializes the bignum supplied, and stores the converted number in
+ *	it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_InitBignumFromDouble(
+    Tcl_Interp *interp,		/* For error message */
+    double d,			/* Number to convert */
+    mp_int *b)			/* Place to store the result */
+{
+    double fract;
+    int expt;
+
+    /*
+     * Infinite values can't convert to bignum.
+     */
+
+    if (TclIsInfinite(d)) {
+	if (interp != NULL) {
+	    const char *s = "integer value too large to represent";
+
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(s, -1));
+	    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW", s, NULL);
+	}
+	return TCL_ERROR;
+    }
+
+    fract = frexp(d,&expt);
+    if (expt <= 0) {
+	mp_init(b);
+	mp_zero(b);
+    } else {
+	Tcl_WideInt w = (Tcl_WideInt) ldexp(fract, mantBits);
+	int shift = expt - mantBits;
+
+	TclBNInitBignumFromWideInt(b, w);
+	if (shift < 0) {
+	    mp_div_2d(b, -shift, b, NULL);
+	} else if (shift > 0) {
+	    mp_mul_2d(b, shift, b);
+	}
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBignumToDouble --
+ *
+ *	Convert an arbitrary-precision integer to a native floating point
+ *	number.
+ *
+ * Results:
+ *	Returns the converted number. Sets errno to ERANGE if the number is
+ *	too large to convert.
+ *
+ *----------------------------------------------------------------------
+ */
+
+double
+TclBignumToDouble(
+    mp_int *a)			/* Integer to convert. */
+{
+    mp_int b;
+    int bits, shift, i, lsb;
+    double r;
+
+
+    /*
+     * We need a 'mantBits'-bit significand.  Determine what shift will 
+     * give us that.
+     */
+
+    bits = mp_count_bits(a);
+    if (bits > DBL_MAX_EXP*log2FLT_RADIX) {
+	errno = ERANGE;
+	if (a->sign == MP_ZPOS) {
+	    return HUGE_VAL;
+	} else {
+	    return -HUGE_VAL;
+	}
+    }
+    shift = mantBits - bits;
+
+    /* 
+     * If shift > 0, shift the significand left by the requisite number of
+     * bits.  If shift == 0, the significand is already exactly 'mantBits'
+     * in length.  If shift < 0, we will need to shift the significand right
+     * by the requisite number of bits, and round it. If the '1-shift'
+     * least significant bits are 0, but the 'shift'th bit is nonzero,
+     * then the significand lies exactly between two values and must be
+     * 'rounded to even'.
+     */
+
+    mp_init(&b);
+    if (shift == 0) {
+	mp_copy(a, &b);
+    } else if (shift > 0) {
+	mp_mul_2d(a, shift, &b);
+    } else if (shift < 0) {
+	lsb = mp_cnt_lsb(a);
+	if (lsb == -1-shift) {
+
+	    /*
+	     * Round to even
+	     */
+
+	    mp_div_2d(a, -shift, &b, NULL);
+	    if (mp_isodd(&b)) {
+		if (b.sign == MP_ZPOS) {
+		    mp_add_d(&b, 1, &b);
+		} else {
+		    mp_sub_d(&b, 1, &b);
+		}
+	    }
+	} else {
+
+	    /*
+	     * Ordinary rounding
+	     */
+
+	    mp_div_2d(a, -1-shift, &b, NULL);
+	    if (b.sign == MP_ZPOS) {
+		mp_add_d(&b, 1, &b);
+	    } else {
+		mp_sub_d(&b, 1, &b);
+	    }
+	    mp_div_2d(&b, 1, &b, NULL);
+	}
+    }
+
+    /*
+     * Accumulate the result, one mp_digit at a time.
+     */
+
+    r = 0.0;
+    for (i=b.used-1 ; i>=0 ; --i) {
+	r = ldexp(r, DIGIT_BIT) + b.dp[i];
+    }
+    mp_clear(&b);
+
+    /*
+     * Scale the result to the correct number of bits.
+     */
+
+    r = ldexp(r, bits - mantBits);
+
+    /*
+     * Return the result with the appropriate sign.
+     */
+
+    if (a->sign == MP_ZPOS) {
+	return r;
+    } else {
+	return -r;
+    }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * TclCeil --
+ *
+ *	Computes the smallest floating point number that is at least the
+ *	mp_int argument.
+ *
+ * Results:
+ *	Returns the floating point number.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+double
+TclCeil(
+    mp_int *a)			/* Integer to convert. */
+{
+    double r = 0.0;
+    mp_int b;
+
+    mp_init(&b);
+    if (mp_cmp_d(a, 0) == MP_LT) {
+	mp_neg(a, &b);
+	r = -TclFloor(&b);
+    } else {
+	int bits = mp_count_bits(a);
+
+	if (bits > DBL_MAX_EXP*log2FLT_RADIX) {
+	    r = HUGE_VAL;
+	} else {
+	    int i, exact = 1, shift = mantBits - bits;
+
+	    if (shift > 0) {
+		mp_mul_2d(a, shift, &b);
+	    } else if (shift < 0) {
+		mp_int d;
+		mp_init(&d);
+		mp_div_2d(a, -shift, &b, &d);
+		exact = mp_iszero(&d);
+		mp_clear(&d);
+	    } else {
+		mp_copy(a, &b);
+	    }
+	    if (!exact) {
+		mp_add_d(&b, 1, &b);
+	    }
+	    for (i=b.used-1 ; i>=0 ; --i) {
+		r = ldexp(r, DIGIT_BIT) + b.dp[i];
+	    }
+	    r = ldexp(r, bits - mantBits);
+	}
+    }
+    mp_clear(&b);
+    return r;
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ *
+ * TclFloor --
+ *
+ *	Computes the largest floating point number less than or equal to
+ *	the mp_int argument.
+ *
+ * Results:
+ *	Returns the floating point value.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+double
+TclFloor(
+    mp_int *a)			/* Integer to convert. */
+{
+    double r = 0.0;
+    mp_int b;
+
+    mp_init(&b);
+    if (mp_cmp_d(a, 0) == MP_LT) {
+	mp_neg(a, &b);
+	r = -TclCeil(&b);
+    } else {
+	int bits = mp_count_bits(a);
+
+	if (bits > DBL_MAX_EXP*log2FLT_RADIX) {
+	    r = DBL_MAX;
+	} else {
+	    int i, shift = mantBits - bits;
+
+	    if (shift > 0) {
+		mp_mul_2d(a, shift, &b);
+	    } else if (shift < 0) {
+		mp_div_2d(a, -shift, &b, NULL);
+	    } else {
+		mp_copy(a, &b);
+	    }
+	    for (i=b.used-1 ; i>=0 ; --i) {
+		r = ldexp(r, DIGIT_BIT) + b.dp[i];
+	    }
+	    r = ldexp(r, bits - mantBits);
+	}
+    }
+    mp_clear(&b);
+    return r;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * BignumToBiasedFrExp --
+ *
+ *	Convert an arbitrary-precision integer to a native floating point
+ *	number in the range [0.5,1) times a power of two. NOTE: Intentionally
+ *	converts to a number that's a few ulp too small, so that
+ *	RefineApproximation will not overflow near the high end of the
+ *	machine's arithmetic range.
+ *
+ * Results:
+ *	Returns the converted number.
+ *
+ * Side effects:
+ *	Stores the exponent of two in 'machexp'.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static double
+BignumToBiasedFrExp(
+    mp_int *a,			/* Integer to convert */
+    int *machexp)		/* Power of two */
+{
+    mp_int b;
+    int bits;
+    int shift;
+    int i;
+    double r;
+
+    /*
+     * Determine how many bits we need, and extract that many from the input.
+     * Round to nearest unit in the last place.
+     */
+
+    bits = mp_count_bits(a);
+    shift = mantBits - 2 - bits;
+    mp_init(&b);
+    if (shift > 0) {
+	mp_mul_2d(a, shift, &b);
+    } else if (shift < 0) {
+	mp_div_2d(a, -shift, &b, NULL);
+    } else {
+	mp_copy(a, &b);
+    }
+
+    /*
+     * Accumulate the result, one mp_digit at a time.
+     */
+
+    r = 0.0;
+    for (i=b.used-1; i>=0; --i) {
+	r = ldexp(r, DIGIT_BIT) + b.dp[i];
+    }
+    mp_clear(&b);
+
+    /*
+     * Return the result with the appropriate sign.
+     */
+
+    *machexp = bits - mantBits + 2;
+    return ((a->sign == MP_ZPOS) ? r : -r);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Pow10TimesFrExp --
+ *
+ *	Multiply a power of ten by a number expressed as fraction and
+ *	exponent.
+ *
+ * Results:
+ *	Returns the significand of the result.
+ *
+ * Side effects:
+ *	Overwrites the 'machexp' parameter with the exponent of the result.
+ *
+ * Assumes that 'exponent' is such that 10**exponent would be a double, even
+ * though 'fraction*10**(machexp+exponent)' might overflow.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static double
+Pow10TimesFrExp(
+    int exponent,	 	/* Power of 10 to multiply by */
+    double fraction,		/* Significand of multiplicand */
+    int *machexp)		/* On input, exponent of multiplicand. On
+				 * output, exponent of result. */
+{
+    int i, j;
+    int expt = *machexp;
+    double retval = fraction;
+
+    if (exponent > 0) {
+	/*
+	 * Multiply by 10**exponent
+	 */
+
+	retval = frexp(retval * pow10vals[exponent&0xf], &j);
+	expt += j;
+	for (i=4; i<9; ++i) {
+	    if (exponent & (1<<i)) {
+		retval = frexp(retval * pow_10_2_n[i], &j);
+		expt += j;
+	    }
+	}
+    } else if (exponent < 0) {
+	/*
+	 * Divide by 10**-exponent
+	 */
+
+	retval = frexp(retval / pow10vals[(-exponent) & 0xf], &j);
+	expt += j;
+	for (i=4; i<9; ++i) {
+	    if ((-exponent) & (1<<i)) {
+		retval = frexp(retval / pow_10_2_n[i], &j);
+		expt += j;
+	    }
+	}
+    }
+
+    *machexp = expt;
+    return retval;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SafeLdExp --
+ *
+ *	Do an 'ldexp' operation, but handle denormals gracefully.
+ *
+ * Results:
+ *	Returns the appropriately scaled value.
+ *
+ *	On some platforms, 'ldexp' fails when presented with a number too
+ *	small to represent as a normalized double. This routine does 'ldexp'
+ *	in two steps for those numbers, to return correctly denormalized
+ *	values.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static double
+SafeLdExp(
+    double fract,
+    int expt)
+{
+    int minexpt = DBL_MIN_EXP * log2FLT_RADIX;
+    volatile double a, b, retval;
+
+    if (expt < minexpt) {
+	a = ldexp(fract, expt - mantBits - minexpt);
+	b = ldexp(1.0, mantBits + minexpt);
+	retval = a * b;
+    } else {
+	retval = ldexp(fract, expt);
+    }
+    return retval;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFormatNaN --
+ *
+ *	Makes the string representation of a "Not a Number"
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Stores the string representation in the supplied buffer, which must be
+ *	at least TCL_DOUBLE_SPACE characters.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclFormatNaN(
+    double value,		/* The Not-a-Number to format. */
+    char *buffer)		/* String representation. */
+{
+#ifndef IEEE_FLOATING_POINT
+    strcpy(buffer, "NaN");
+    return;
+#else
+    union {
+	double dv;
+	Tcl_WideUInt iv;
+    } bitwhack;
+
+    bitwhack.dv = value;
+    if (n770_fp) {
+	bitwhack.iv = Nokia770Twiddle(bitwhack.iv);
+    }
+    if (bitwhack.iv & ((Tcl_WideUInt) 1 << 63)) {
+	bitwhack.iv &= ~ ((Tcl_WideUInt) 1 << 63);
+	*buffer++ = '-';
+    }
+    *buffer++ = 'N';
+    *buffer++ = 'a';
+    *buffer++ = 'N';
+    bitwhack.iv &= (((Tcl_WideUInt) 1) << 51) - 1;
+    if (bitwhack.iv != 0) {
+	sprintf(buffer, "(%" TCL_LL_MODIFIER "x)", bitwhack.iv);
+    } else {
+	*buffer = '\0';
+    }
+#endif /* IEEE_FLOATING_POINT */
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Nokia770Twiddle --
+ *
+ * 	Transpose the two words of a number for Nokia 770 floating
+ *	point handling.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_WideUInt
+Nokia770Twiddle(
+    Tcl_WideUInt w)		/* Number to transpose */
+{
+    return (((w >> 32) & 0xffffffff) | (w << 32));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclNokia770Doubles --
+ *
+ * 	Transpose the two words of a number for Nokia 770 floating
+ *	point handling.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclNokia770Doubles(void)
+{
+    return n770_fp;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c
index 8dba3c1..a929d04 100644
--- a/generic/tclStringObj.c
+++ b/generic/tclStringObj.c
@@ -1,108 +1,111 @@
-/* 
+/*
  * tclStringObj.c --
  *
- *	This file contains procedures that implement string operations on Tcl
- *	objects.  Some string operations work with UTF strings and others
- *	require Unicode format.  Functions that require knowledge of the width
+ *	This file contains functions that implement string operations on Tcl
+ *	objects. Some string operations work with UTF strings and others
+ *	require Unicode format. Functions that require knowledge of the width
  *	of each character, such as indexing, operate on Unicode data.
  *
- *	A Unicode string is an internationalized string.  Conceptually, a
- *	Unicode string is an array of 16-bit quantities organized as a sequence
- *	of properly formed UTF-8 characters.  There is a one-to-one map between
- *	Unicode and UTF characters.  Because Unicode characters have a fixed
- *	width, operations such as indexing operate on Unicode data.  The String
- *	object is optimized for the case where each UTF char in a string is
- *	only one byte.  In this case, we store the value of numChars, but we
- *	don't store the Unicode data (unless Tcl_GetUnicode is explicitly
- *	called).
- *
- *	The String object type stores one or both formats.  The default
- *	behavior is to store UTF.  Once Unicode is calculated by a function, it
+ *	A Unicode string is an internationalized string. Conceptually, a
+ *	Unicode string is an array of 16-bit quantities organized as a
+ *	sequence of properly formed UTF-8 characters. There is a one-to-one
+ *	map between Unicode and UTF characters. Because Unicode characters
+ *	have a fixed width, operations such as indexing operate on Unicode
+ *	data. The String object is optimized for the case where each UTF char
+ *	in a string is only one byte. In this case, we store the value of
+ *	numChars, but we don't store the Unicode data (unless Tcl_GetUnicode
+ *	is explicitly called).
+ *
+ *	The String object type stores one or both formats. The default
+ *	behavior is to store UTF. Once Unicode is calculated by a function, it
  *	is stored in the internal rep for future access (without an additional
  *	O(n) cost).
  *
  *	To allow many appends to be done to an object without constantly
  *	reallocating the space for the string or Unicode representation, we
  *	allocate double the space for the string or Unicode and use the
- *	internal representation to keep track of how much space is used
- *	vs. allocated.
+ *	internal representation to keep track of how much space is used vs.
+ *	allocated.
  *
  * Copyright (c) 1995-1997 Sun Microsystems, Inc.
  * Copyright (c) 1999 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
+#include "tommath.h"
 
 /*
- * Prototypes for procedures defined later in this file:
+ * Prototypes for functions defined later in this file:
  */
 
-static void		AppendUnicodeToUnicodeRep _ANSI_ARGS_((
-    			    Tcl_Obj *objPtr, CONST Tcl_UniChar *unicode,
-			    int appendNumChars));
-static void		AppendUnicodeToUtfRep _ANSI_ARGS_((
-    			    Tcl_Obj *objPtr, CONST Tcl_UniChar *unicode,
-			    int numChars));
-static void		AppendUtfToUnicodeRep _ANSI_ARGS_((Tcl_Obj *objPtr,
-    			    CONST char *bytes, int numBytes));
-static void		AppendUtfToUtfRep _ANSI_ARGS_((Tcl_Obj *objPtr,
-    			    CONST char *bytes, int numBytes));
-static void		DupStringInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr,
-			    Tcl_Obj *copyPtr));
-static void		FillUnicodeRep _ANSI_ARGS_((Tcl_Obj *objPtr));
-static void		FreeStringInternalRep _ANSI_ARGS_((Tcl_Obj *objPtr));
-static void		GrowUnicodeBuffer _ANSI_ARGS_((Tcl_Obj *objPtr,
-			    int needed));
-static int		SetStringFromAny _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
+static void		AppendPrintfToObjVA(Tcl_Obj *objPtr,
+			    const char *format, va_list argList);
+static void		AppendUnicodeToUnicodeRep(Tcl_Obj *objPtr,
+			    const Tcl_UniChar *unicode, int appendNumChars);
+static void		AppendUnicodeToUtfRep(Tcl_Obj *objPtr,
+			    const Tcl_UniChar *unicode, int numChars);
+static void		AppendUtfToUnicodeRep(Tcl_Obj *objPtr,
+			    const char *bytes, int numBytes);
+static void		AppendUtfToUtfRep(Tcl_Obj *objPtr,
+			    const char *bytes, int numBytes);
+static void		DupStringInternalRep(Tcl_Obj *objPtr,
+			    Tcl_Obj *copyPtr);
+static void		FillUnicodeRep(Tcl_Obj *objPtr);
+static void		FreeStringInternalRep(Tcl_Obj *objPtr);
+static void		GrowUnicodeBuffer(Tcl_Obj *objPtr, int needed);
+static int		SetStringFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
 static void		SetUnicodeObj(Tcl_Obj *objPtr,
-			    CONST Tcl_UniChar *unicode, int numChars);
-static int		UnicodeLength _ANSI_ARGS_((CONST Tcl_UniChar *unicode));
-static void		UpdateStringOfString _ANSI_ARGS_((Tcl_Obj *objPtr));
+			    const Tcl_UniChar *unicode, int numChars);
+static int		UnicodeLength(const Tcl_UniChar *unicode);
+static void		UpdateStringOfString(Tcl_Obj *objPtr);
 
 /*
  * The structure below defines the string Tcl object type by means of
- * procedures that can be invoked by generic object code.
+ * functions that can be invoked by generic object code.
  */
 
 Tcl_ObjType tclStringType = {
-    "string",				/* name */
-    FreeStringInternalRep,		/* freeIntRepPro */
-    DupStringInternalRep,		/* dupIntRepProc */
-    UpdateStringOfString,		/* updateStringProc */
-    SetStringFromAny			/* setFromAnyProc */
+    "string",			/* name */
+    FreeStringInternalRep,	/* freeIntRepPro */
+    DupStringInternalRep,	/* dupIntRepProc */
+    UpdateStringOfString,	/* updateStringProc */
+    SetStringFromAny		/* setFromAnyProc */
 };
 
 /*
- * The following structure is the internal rep for a String object.
- * It keeps track of how much memory has been used and how much has been
- * allocated for the Unicode and UTF string to enable growing and
- * shrinking of the UTF and Unicode reps of the String object with fewer
- * mallocs.  To optimize string length and indexing operations, this
- * structure also stores the number of characters (same of UTF and Unicode!)
- * once that value has been computed.
+ * The following structure is the internal rep for a String object. It keeps
+ * track of how much memory has been used and how much has been allocated for
+ * the Unicode and UTF string to enable growing and shrinking of the UTF and
+ * Unicode reps of the String object with fewer mallocs. To optimize string
+ * length and indexing operations, this structure also stores the number of
+ * characters (same of UTF and Unicode!) once that value has been computed.
+ *
+ * Under normal configurations, what Tcl calls "Unicode" is actually UTF-16
+ * restricted to the Basic Multilingual Plane (i.e. U+00000 to U+0FFFF). This
+ * can be officially modified by altering the definition of Tcl_UniChar in
+ * tcl.h, but do not do that unless you are sure what you're doing!
  */
 
 typedef struct String {
-    int numChars;		/* The number of chars in the string.
-				 * -1 means this value has not been
-				 * calculated. >= 0 means that there is a
-				 * valid Unicode rep, or that the number
-				 * of UTF bytes == the number of chars. */
-    size_t allocated;		/* The amount of space actually allocated
-				 * for the UTF string (minus 1 byte for
-				 * the termination char). */
-    size_t uallocated;		/* The amount of space actually allocated
-				 * for the Unicode string (minus 2 bytes for
-				 * the termination char). */
-    int hasUnicode;		/* Boolean determining whether the string
-				 * has a Unicode representation. */
-    Tcl_UniChar unicode[2];	/* The array of Unicode chars.  The actual
-				 * size of this field depends on the
-				 * 'uallocated' field above. */
+    int numChars;		/* The number of chars in the string. -1 means
+				 * this value has not been calculated. >= 0
+				 * means that there is a valid Unicode rep, or
+				 * that the number of UTF bytes == the number
+				 * of chars. */
+    size_t allocated;		/* The amount of space actually allocated for
+				 * the UTF string (minus 1 byte for the
+				 * termination char). */
+    size_t uallocated;		/* The amount of space actually allocated for
+				 * the Unicode string (minus 2 bytes for the
+				 * termination char). */
+    int hasUnicode;		/* Boolean determining whether the string has
+				 * a Unicode representation. */
+    Tcl_UniChar unicode[2];	/* The array of Unicode chars. The actual size
+				 * of this field depends on the 'uallocated'
+				 * field above. */
 } String;
 
 #define STRING_MAXCHARS \
@@ -114,7 +117,7 @@ typedef struct String {
 	? (sizeof(String) - sizeof(Tcl_UniChar) + (ualloc)) \
 	: sizeof(String)))
 #define stringCheckLimits(numChars) \
-    if ((unsigned)(numChars) > (unsigned)(STRING_MAXCHARS)) { \
+    if ((numChars) < 0 || (numChars) > STRING_MAXCHARS) { \
 	Tcl_Panic("max length for a Tcl unicode value (%d chars) exceeded", \
 		STRING_MAXCHARS); \
     }
@@ -125,9 +128,9 @@ typedef struct String {
 	(String *) attemptckrealloc((char *) ptr, \
 		(unsigned) STRING_SIZE(STRING_UALLOC(numChars)) )
 #define GET_STRING(objPtr) \
-		((String *) (objPtr)->internalRep.otherValuePtr)
+	((String *) (objPtr)->internalRep.twoPtrValue.ptr1)
 #define SET_STRING(objPtr, stringPtr) \
-		(objPtr)->internalRep.otherValuePtr = (VOID *) (stringPtr)
+	((objPtr)->internalRep.twoPtrValue.ptr1 = (void *) (stringPtr))
 
 /*
  * TCL STRING GROWTH ALGORITHM
@@ -138,31 +141,31 @@ typedef struct String {
  *   Attempt to allocate 2 * (originalLength + appendLength)
  *   On failure:
  *	attempt to allocate originalLength + 2*appendLength +
- *			TCL_GROWTH_MIN_ALLOC 
+ *			TCL_GROWTH_MIN_ALLOC
  *
  * This algorithm allows very good performance, as it rapidly increases the
  * memory allocated for a given string, which minimizes the number of
- * reallocations that must be performed.  However, using only the doubling
- * algorithm can lead to a significant waste of memory.  In particular, it
- * may fail even when there is sufficient memory available to complete the
- * append request (but there is not 2 * totalLength memory available).  So when
- * the doubling fails (because there is not enough memory available), the
+ * reallocations that must be performed. However, using only the doubling
+ * algorithm can lead to a significant waste of memory. In particular, it may
+ * fail even when there is sufficient memory available to complete the append
+ * request (but there is not 2*totalLength memory available). So when the
+ * doubling fails (because there is not enough memory available), the
  * algorithm requests a smaller amount of memory, which is still enough to
- * cover the request, but which hopefully will be less than the total available
- * memory.
- * 
- * The addition of TCL_GROWTH_MIN_ALLOC allows for efficient handling
- * of very small appends.  Without this extra slush factor, a sequence
- * of several small appends would cause several memory allocations.
- * As long as TCL_GROWTH_MIN_ALLOC is a reasonable size, we can
- * avoid that behavior.
+ * cover the request, but which hopefully will be less than the total
+ * available memory.
+ *
+ * The addition of TCL_GROWTH_MIN_ALLOC allows for efficient handling of very
+ * small appends. Without this extra slush factor, a sequence of several small
+ * appends would cause several memory allocations. As long as
+ * TCL_GROWTH_MIN_ALLOC is a reasonable size, we can avoid that behavior.
  *
  * The growth algorithm can be tuned by adjusting the following parameters:
  *
  * TCL_GROWTH_MIN_ALLOC		Additional space, in bytes, to allocate when
- *				the double allocation has failed.
- *				Default is 1024 (1 kilobyte).
+ *				the double allocation has failed. Default is
+ *				1024 (1 kilobyte).
  */
+
 #ifndef TCL_GROWTH_MIN_ALLOC
 #define TCL_GROWTH_MIN_ALLOC	1024
 #endif
@@ -215,60 +218,55 @@ GrowUnicodeBuffer(
  *
  * Tcl_NewStringObj --
  *
- *	This procedure is normally called when not debugging: i.e., when
+ *	This function is normally called when not debugging: i.e., when
  *	TCL_MEM_DEBUG is not defined. It creates a new string object and
  *	initializes it from the byte pointer and length arguments.
  *
- *	When TCL_MEM_DEBUG is defined, this procedure just returns the
- *	result of calling the debugging version Tcl_DbNewStringObj.
+ *	When TCL_MEM_DEBUG is defined, this function just returns the result
+ *	of calling the debugging version Tcl_DbNewStringObj.
  *
  * Results:
  *	A newly created string object is returned that has ref count zero.
  *
  * Side effects:
- *	The new object's internal string representation will be set to a
- *	copy of the length bytes starting at "bytes". If "length" is
- *	negative, use bytes up to the first NULL byte; i.e., assume "bytes"
- *	points to a C-style NULL-terminated string. The object's type is set
- *	to NULL. An extra NULL is added to the end of the new object's byte
- *	array.
+ *	The new object's internal string representation will be set to a copy
+ *	of the length bytes starting at "bytes". If "length" is negative, use
+ *	bytes up to the first NUL byte; i.e., assume "bytes" points to a
+ *	C-style NUL-terminated string. The object's type is set to NULL. An
+ *	extra NUL is added to the end of the new object's byte array.
  *
  *----------------------------------------------------------------------
  */
 
 #ifdef TCL_MEM_DEBUG
 #undef Tcl_NewStringObj
-
 Tcl_Obj *
-Tcl_NewStringObj(bytes, length)
-    CONST char *bytes;		/* Points to the first of the length bytes
+Tcl_NewStringObj(
+    const char *bytes,		/* Points to the first of the length bytes
 				 * used to initialize the new object. */
-    int length;			/* The number of bytes to copy from "bytes"
-				 * when initializing the new object. If 
-				 * negative, use bytes up to the first
-				 * NULL byte. */
+    int length)			/* The number of bytes to copy from "bytes"
+				 * when initializing the new object. If
+				 * negative, use bytes up to the first NUL
+				 * byte. */
 {
     return Tcl_DbNewStringObj(bytes, length, "unknown", 0);
 }
-
 #else /* if not TCL_MEM_DEBUG */
-
 Tcl_Obj *
-Tcl_NewStringObj(bytes, length)
-    CONST char *bytes;		/* Points to the first of the length bytes
+Tcl_NewStringObj(
+    const char *bytes,		/* Points to the first of the length bytes
 				 * used to initialize the new object. */
-    int length;			/* The number of bytes to copy from "bytes"
-				 * when initializing the new object. If 
-				 * negative, use bytes up to the first
-				 * NULL byte. */
+    int length)			/* The number of bytes to copy from "bytes"
+				 * when initializing the new object. If
+				 * negative, use bytes up to the first NUL
+				 * byte. */
 {
     register Tcl_Obj *objPtr;
 
     if (length < 0) {
 	length = (bytes? strlen(bytes) : 0);
     }
-    TclNewObj(objPtr);
-    TclInitStringRep(objPtr, bytes, length);
+    TclNewStringObj(objPtr, bytes, length);
     return objPtr;
 }
 #endif /* TCL_MEM_DEBUG */
@@ -278,45 +276,43 @@ Tcl_NewStringObj(bytes, length)
  *
  * Tcl_DbNewStringObj --
  *
- *	This procedure is normally called when debugging: i.e., when
+ *	This function is normally called when debugging: i.e., when
  *	TCL_MEM_DEBUG is defined. It creates new string objects. It is the
- *	same as the Tcl_NewStringObj procedure above except that it calls
+ *	same as the Tcl_NewStringObj function above except that it calls
  *	Tcl_DbCkalloc directly with the file name and line number from its
  *	caller. This simplifies debugging since then the [memory active]
- *	command	will report the correct file name and line number when
+ *	command will report the correct file name and line number when
  *	reporting objects that haven't been freed.
  *
- *	When TCL_MEM_DEBUG is not defined, this procedure just returns the
+ *	When TCL_MEM_DEBUG is not defined, this function just returns the
  *	result of calling Tcl_NewStringObj.
  *
  * Results:
  *	A newly created string object is returned that has ref count zero.
  *
  * Side effects:
- *	The new object's internal string representation will be set to a
- *	copy of the length bytes starting at "bytes". If "length" is
- *	negative, use bytes up to the first NULL byte; i.e., assume "bytes"
- *	points to a C-style NULL-terminated string. The object's type is set
- *	to NULL. An extra NULL is added to the end of the new object's byte
- *	array.
+ *	The new object's internal string representation will be set to a copy
+ *	of the length bytes starting at "bytes". If "length" is negative, use
+ *	bytes up to the first NUL byte; i.e., assume "bytes" points to a
+ *	C-style NUL-terminated string. The object's type is set to NULL. An
+ *	extra NUL is added to the end of the new object's byte array.
  *
  *----------------------------------------------------------------------
  */
 
 #ifdef TCL_MEM_DEBUG
-
 Tcl_Obj *
-Tcl_DbNewStringObj(bytes, length, file, line)
-    CONST char *bytes;		/* Points to the first of the length bytes
+Tcl_DbNewStringObj(
+    const char *bytes,		/* Points to the first of the length bytes
 				 * used to initialize the new object. */
-    int length;			/* The number of bytes to copy from "bytes"
-				 * when initializing the new object. If 
-				 * negative, use bytes up to the first
-				 * NULL byte. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+    int length,			/* The number of bytes to copy from "bytes"
+				 * when initializing the new object. If
+				 * negative, use bytes up to the first NUL
+				 * byte. */
+    const char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     register Tcl_Obj *objPtr;
 
@@ -327,21 +323,19 @@ Tcl_DbNewStringObj(bytes, length, file, line)
     TclInitStringRep(objPtr, bytes, length);
     return objPtr;
 }
-
 #else /* if not TCL_MEM_DEBUG */
-
 Tcl_Obj *
-Tcl_DbNewStringObj(bytes, length, file, line)
-    CONST char *bytes;		/* Points to the first of the length bytes
+Tcl_DbNewStringObj(
+    const char *bytes,		/* Points to the first of the length bytes
 				 * used to initialize the new object. */
-    register int length;	/* The number of bytes to copy from "bytes"
-				 * when initializing the new object. If 
-				 * negative, use bytes up to the first
-				 * NULL byte. */
-    CONST char *file;		/* The name of the source file calling this
-				 * procedure; used for debugging. */
-    int line;			/* Line number in the source file; used
-				 * for debugging. */
+    register int length,	/* The number of bytes to copy from "bytes"
+				 * when initializing the new object. If
+				 * negative, use bytes up to the first NUL
+				 * byte. */
+    const char *file,		/* The name of the source file calling this
+				 * function; used for debugging. */
+    int line)			/* Line number in the source file; used for
+				 * debugging. */
 {
     return Tcl_NewStringObj(bytes, length);
 }
@@ -352,14 +346,13 @@ Tcl_DbNewStringObj(bytes, length, file, line)
  *
  * Tcl_NewUnicodeObj --
  *
- *	This procedure is creates a new String object and initializes
- *	it from the given Unicode String.  If the Utf String is the same size
- *	as the Unicode string, don't duplicate the data.
+ *	This function is creates a new String object and initializes it from
+ *	the given Unicode String. If the Utf String is the same size as the
+ *	Unicode string, don't duplicate the data.
  *
  * Results:
- *	The newly created object is returned.  This object will have no
- *	initial string representation.  The returned object has a ref count
- *	of 0.
+ *	The newly created object is returned. This object will have no initial
+ *	string representation. The returned object has a ref count of 0.
  *
  * Side effects:
  *	Memory allocated for new object and copy of Unicode argument.
@@ -368,10 +361,10 @@ Tcl_DbNewStringObj(bytes, length, file, line)
  */
 
 Tcl_Obj *
-Tcl_NewUnicodeObj(unicode, numChars)
-    CONST Tcl_UniChar *unicode;	/* The unicode string used to initialize
-				 * the new object. */
-    int numChars;		/* Number of characters in the unicode
+Tcl_NewUnicodeObj(
+    const Tcl_UniChar *unicode,	/* The unicode string used to initialize the
+				 * new object. */
+    int numChars)		/* Number of characters in the unicode
 				 * string. */
 {
     Tcl_Obj *objPtr;
@@ -392,60 +385,63 @@ Tcl_NewUnicodeObj(unicode, numChars)
  *	Pointer to unicode string representing the unicode object.
  *
  * Side effects:
- *	Frees old internal rep.  Allocates memory for new "String"
- *	internal rep.
+ *	Frees old internal rep. Allocates memory for new "String" internal
+ *	rep.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_GetCharLength(objPtr)
-    Tcl_Obj *objPtr;	/* The String object to get the num chars of. */
+Tcl_GetCharLength(
+    Tcl_Obj *objPtr)		/* The String object to get the num chars
+				 * of. */
 {
     String *stringPtr;
-    
+
     SetStringFromAny(NULL, objPtr);
     stringPtr = GET_STRING(objPtr);
 
     /*
-     * If numChars is unknown, then calculate the number of characaters
-     * while populating the Unicode string.
+     * If numChars is unknown, then calculate the number of characaters while
+     * populating the Unicode string.
      */
-    
+
     if (stringPtr->numChars == -1) {
 	register int i = objPtr->length;
 	register unsigned char *str = (unsigned char *) objPtr->bytes;
 
 	/*
 	 * This is a speed sensitive function, so run specially over the
-	 * string to count continuous ascii characters before resorting
-	 * to the Tcl_NumUtfChars call.  This is a long form of:
-	 stringPtr->numChars = Tcl_NumUtfChars(objPtr->bytes, objPtr->length);
-	*/
+	 * string to count continuous ascii characters before resorting to the
+	 * Tcl_NumUtfChars call. This is a long form of:
+	 stringPtr->numChars = Tcl_NumUtfChars(objPtr->bytes,objPtr->length);
+	 *
+	 * TODO: Consider macro-izing this.
+	 */
 
-	while (i && (*str < 0xC0)) { i--; str++; }
+	while (i && (*str < 0xC0)) {
+	    i--;
+	    str++;
+	}
 	stringPtr->numChars = objPtr->length - i;
 	if (i) {
 	    stringPtr->numChars += Tcl_NumUtfChars(objPtr->bytes
 		    + (objPtr->length - i), i);
 	}
 
- 	if (stringPtr->numChars == objPtr->length) {
-
+	if (stringPtr->numChars == objPtr->length) {
 	    /*
-	     * Since we've just calculated the number of chars, and all
-	     * UTF chars are 1-byte long, we don't need to store the
-	     * unicode string.
+	     * Since we've just calculated the number of chars, and all UTF
+	     * chars are 1-byte long, we don't need to store the unicode
+	     * string.
 	     */
 
 	    stringPtr->hasUnicode = 0;
-
 	} else {
-    
 	    /*
-	     * Since we've just calucalated the number of chars, and not
-	     * all UTF chars are 1-byte long, go ahead and populate the
-	     * unicode string.
+	     * Since we've just calucalated the number of chars, and not all
+	     * UTF chars are 1-byte long, go ahead and populate the unicode
+	     * string.
 	     */
 
 	    FillUnicodeRep(objPtr);
@@ -454,7 +450,7 @@ Tcl_GetCharLength(objPtr)
 	     * We need to fetch the pointer again because we have just
 	     * reallocated the structure to make room for the Unicode data.
 	     */
-	    
+
 	    stringPtr = GET_STRING(objPtr);
 	}
     }
@@ -466,8 +462,8 @@ Tcl_GetCharLength(objPtr)
  *
  * Tcl_GetUniChar --
  *
- *	Get the index'th Unicode character from the String object.  The
- *	index is assumed to be in the appropriate range.
+ *	Get the index'th Unicode character from the String object. The index
+ *	is assumed to be in the appropriate range.
  *
  * Results:
  *	Returns the index'th Unicode character in the Object.
@@ -479,22 +475,21 @@ Tcl_GetCharLength(objPtr)
  */
 
 Tcl_UniChar
-Tcl_GetUniChar(objPtr, index)
-    Tcl_Obj *objPtr;	/* The object to get the Unicode charater from. */
-    int index;		/* Get the index'th Unicode character. */
+Tcl_GetUniChar(
+    Tcl_Obj *objPtr,		/* The object to get the Unicode charater
+				 * from. */
+    int index)			/* Get the index'th Unicode character. */
 {
     Tcl_UniChar unichar;
     String *stringPtr;
-    
+
     SetStringFromAny(NULL, objPtr);
     stringPtr = GET_STRING(objPtr);
 
     if (stringPtr->numChars == -1) {
-
 	/*
-	 * We haven't yet calculated the length, so we don't have the
-	 * Unicode str.  We need to know the number of chars before we
-	 * can do indexing.
+	 * We haven't yet calculated the length, so we don't have the Unicode
+	 * str. We need to know the number of chars before we can do indexing.
 	 */
 
 	Tcl_GetCharLength(objPtr);
@@ -503,15 +498,14 @@ Tcl_GetUniChar(objPtr, index)
 	 * We need to fetch the pointer again because we may have just
 	 * reallocated the structure.
 	 */
-	
+
 	stringPtr = GET_STRING(objPtr);
     }
     if (stringPtr->hasUnicode == 0) {
-
 	/*
-	 * All of the characters in the Utf string are 1 byte chars,
-	 * so we don't store the unicode char.  We get the Utf string
-	 * and convert the index'th byte to a Unicode character.
+	 * All of the characters in the Utf string are 1 byte chars, so we
+	 * don't store the unicode char. We get the Utf string and convert the
+	 * index'th byte to a Unicode character.
 	 */
 
 	unichar = (Tcl_UniChar) objPtr->bytes[index];
@@ -526,10 +520,10 @@ Tcl_GetUniChar(objPtr, index)
  *
  * Tcl_GetUnicode --
  *
- *	Get the Unicode form of the String object.  If
- *	the object is not already a String object, it will be converted
- *	to one.  If the String object does not have a Unicode rep, then
- *	one is create from the UTF string format.
+ *	Get the Unicode form of the String object. If the object is not
+ *	already a String object, it will be converted to one. If the String
+ *	object does not have a Unicode rep, then one is create from the UTF
+ *	string format.
  *
  * Results:
  *	Returns a pointer to the object's internal Unicode string.
@@ -541,31 +535,31 @@ Tcl_GetUniChar(objPtr, index)
  */
 
 Tcl_UniChar *
-Tcl_GetUnicode(objPtr)
-    Tcl_Obj *objPtr;	/* The object to find the unicode string for. */
+Tcl_GetUnicode(
+    Tcl_Obj *objPtr)		/* The object to find the unicode string
+				 * for. */
 {
     String *stringPtr;
-    
+
     SetStringFromAny(NULL, objPtr);
     stringPtr = GET_STRING(objPtr);
-    
-    if ((stringPtr->numChars == -1) || (stringPtr->hasUnicode == 0)) {
 
+    if ((stringPtr->numChars == -1) || (stringPtr->hasUnicode == 0)) {
 	/*
-	 * We haven't yet calculated the length, or all of the characters
-	 * in the Utf string are 1 byte chars (so we didn't store the
-	 * unicode str).  Since this function must return a unicode string,
-	 * and one has not yet been stored, force the Unicode to be
-	 * calculated and stored now.
+	 * We haven't yet calculated the length, or all of the characters in
+	 * the Utf string are 1 byte chars (so we didn't store the unicode
+	 * str). Since this function must return a unicode string, and one has
+	 * not yet been stored, force the Unicode to be calculated and stored
+	 * now.
 	 */
 
 	FillUnicodeRep(objPtr);
 
 	/*
-	 * We need to fetch the pointer again because we have just
-	 * reallocated the structure to make room for the Unicode data.
+	 * We need to fetch the pointer again because we have just reallocated
+	 * the structure to make room for the Unicode data.
 	 */
-	
+
 	stringPtr = GET_STRING(objPtr);
     }
     return stringPtr->unicode;
@@ -576,10 +570,10 @@ Tcl_GetUnicode(objPtr)
  *
  * Tcl_GetUnicodeFromObj --
  *
- *	Get the Unicode form of the String object with length.  If
- *	the object is not already a String object, it will be converted
- *	to one.  If the String object does not have a Unicode rep, then
- *	one is create from the UTF string format.
+ *	Get the Unicode form of the String object with length. If the object
+ *	is not already a String object, it will be converted to one. If the
+ *	String object does not have a Unicode rep, then one is create from the
+ *	UTF string format.
  *
  * Results:
  *	Returns a pointer to the object's internal Unicode string.
@@ -591,34 +585,34 @@ Tcl_GetUnicode(objPtr)
  */
 
 Tcl_UniChar *
-Tcl_GetUnicodeFromObj(objPtr, lengthPtr)
-    Tcl_Obj *objPtr;	/* The object to find the unicode string for. */
-    int *lengthPtr;	/* If non-NULL, the location where the
-			 * string rep's unichar length should be
-			 * stored. If NULL, no length is stored. */
+Tcl_GetUnicodeFromObj(
+    Tcl_Obj *objPtr,		/* The object to find the unicode string
+				 * for. */
+    int *lengthPtr)		/* If non-NULL, the location where the string
+				 * rep's unichar length should be stored. If
+				 * NULL, no length is stored. */
 {
     String *stringPtr;
-    
+
     SetStringFromAny(NULL, objPtr);
     stringPtr = GET_STRING(objPtr);
-    
-    if ((stringPtr->numChars == -1) || (stringPtr->hasUnicode == 0)) {
 
+    if ((stringPtr->numChars == -1) || (stringPtr->hasUnicode == 0)) {
 	/*
-	 * We haven't yet calculated the length, or all of the characters
-	 * in the Utf string are 1 byte chars (so we didn't store the
-	 * unicode str).  Since this function must return a unicode string,
-	 * and one has not yet been stored, force the Unicode to be
-	 * calculated and stored now.
+	 * We haven't yet calculated the length, or all of the characters in
+	 * the Utf string are 1 byte chars (so we didn't store the unicode
+	 * str). Since this function must return a unicode string, and one has
+	 * not yet been stored, force the Unicode to be calculated and stored
+	 * now.
 	 */
 
 	FillUnicodeRep(objPtr);
 
 	/*
-	 * We need to fetch the pointer again because we have just
-	 * reallocated the structure to make room for the Unicode data.
+	 * We need to fetch the pointer again because we have just reallocated
+	 * the structure to make room for the Unicode data.
 	 */
-	
+
 	stringPtr = GET_STRING(objPtr);
     }
 
@@ -633,10 +627,10 @@ Tcl_GetUnicodeFromObj(objPtr, lengthPtr)
  *
  * Tcl_GetRange --
  *
- *	Create a Tcl Object that contains the chars between first and last
- *	of the object indicated by "objPtr".  If the object is not already
- *	a String object, convert it to one.  The first and last indices
- *	are assumed to be in the appropriate range.
+ *	Create a Tcl Object that contains the chars between first and last of
+ *	the object indicated by "objPtr". If the object is not already a
+ *	String object, convert it to one. The first and last indices are
+ *	assumed to be in the appropriate range.
  *
  * Results:
  *	Returns a new Tcl Object of the String type.
@@ -648,23 +642,21 @@ Tcl_GetUnicodeFromObj(objPtr, lengthPtr)
  */
 
 Tcl_Obj *
-Tcl_GetRange(objPtr, first, last)
-    Tcl_Obj *objPtr;		/* The Tcl object to find the range of. */
-    int first;			/* First index of the range. */
-    int last;			/* Last index of the range. */
+Tcl_GetRange(
+    Tcl_Obj *objPtr,		/* The Tcl object to find the range of. */
+    int first,			/* First index of the range. */
+    int last)			/* Last index of the range. */
 {
     Tcl_Obj *newObjPtr;		/* The Tcl object to find the range of. */
     String *stringPtr;
-    
+
     SetStringFromAny(NULL, objPtr);
     stringPtr = GET_STRING(objPtr);
 
     if (stringPtr->numChars == -1) {
-    
 	/*
-	 * We haven't yet calculated the length, so we don't have the
-	 * Unicode str.  We need to know the number of chars before we
-	 * can do indexing.
+	 * We haven't yet calculated the length, so we don't have the Unicode
+	 * str. We need to know the number of chars before we can do indexing.
 	 */
 
 	Tcl_GetCharLength(objPtr);
@@ -673,26 +665,26 @@ Tcl_GetRange(objPtr, first, last)
 	 * We need to fetch the pointer again because we may have just
 	 * reallocated the structure.
 	 */
-	
+
 	stringPtr = GET_STRING(objPtr);
     }
 
-    if (objPtr->bytes && stringPtr->numChars == objPtr->length) {
-	char *str = Tcl_GetString(objPtr);
+    if (objPtr->bytes && (stringPtr->numChars == objPtr->length)) {
+	char *str = TclGetString(objPtr);
 
 	/*
-	 * All of the characters in the Utf string are 1 byte chars,
-	 * so we don't store the unicode char.  Create a new string
-	 * object containing the specified range of chars.
+	 * All of the characters in the Utf string are 1 byte chars, so we
+	 * don't store the unicode char. Create a new string object containing
+	 * the specified range of chars.
 	 */
-	
+
 	newObjPtr = Tcl_NewStringObj(&str[first], last-first+1);
 
 	/*
-	 * Since we know the new string only has 1-byte chars, we
-	 * can set it's numChars field.
+	 * Since we know the new string only has 1-byte chars, we can set it's
+	 * numChars field.
 	 */
-	
+
 	SetStringFromAny(NULL, newObjPtr);
 	stringPtr = GET_STRING(newObjPtr);
 	stringPtr->numChars = last-first+1;
@@ -709,52 +701,47 @@ Tcl_GetRange(objPtr, first, last)
  * Tcl_SetStringObj --
  *
  *	Modify an object to hold a string that is a copy of the bytes
- *	indicated by the byte pointer and length arguments. 
+ *	indicated by the byte pointer and length arguments.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The object's string representation will be set to a copy of
- *	the "length" bytes starting at "bytes". If "length" is negative, use
- *	bytes up to the first NULL byte; i.e., assume "bytes" points to a
- *	C-style NULL-terminated string. The object's old string and internal
+ *	The object's string representation will be set to a copy of the
+ *	"length" bytes starting at "bytes". If "length" is negative, use bytes
+ *	up to the first NUL byte; i.e., assume "bytes" points to a C-style
+ *	NUL-terminated string. The object's old string and internal
  *	representations are freed and the object's type is set NULL.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetStringObj(objPtr, bytes, length)
-    register Tcl_Obj *objPtr;	/* Object whose internal rep to init. */
-    CONST char *bytes;		/* Points to the first of the length bytes
+Tcl_SetStringObj(
+    register Tcl_Obj *objPtr,	/* Object whose internal rep to init. */
+    const char *bytes,		/* Points to the first of the length bytes
 				 * used to initialize the object. */
-    register int length;	/* The number of bytes to copy from "bytes"
-				 * when initializing the object. If 
-				 * negative, use bytes up to the first
-				 * NULL byte.*/
+    register int length)	/* The number of bytes to copy from "bytes"
+				 * when initializing the object. If negative,
+				 * use bytes up to the first NUL byte.*/
 {
-    register Tcl_ObjType *oldTypePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetStringObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetStringObj");
     }
 
     /*
      * Set the type to NULL and free any internal rep for the old type.
      */
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
+    TclFreeIntRep(objPtr);
     objPtr->typePtr = NULL;
 
     /*
-     * Free any old string rep, then set the string rep to a copy of
-     * the length bytes starting at "bytes".
+     * Free any old string rep, then set the string rep to a copy of the
+     * length bytes starting at "bytes".
      */
 
-    Tcl_InvalidateStringRep(objPtr);
+    TclInvalidateStringRep(objPtr);
     if (length < 0) {
 	length = (bytes? strlen(bytes) : 0);
     }
@@ -766,30 +753,29 @@ Tcl_SetStringObj(objPtr, bytes, length)
  *
  * Tcl_SetObjLength --
  *
- *	This procedure changes the length of the string representation
- *	of an object.
+ *	This function changes the length of the string representation of an
+ *	object.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If the size of objPtr's string representation is greater than
- *	length, then it is reduced to length and a new terminating null
- *	byte is stored in the strength.  If the length of the string
- *	representation is greater than length, the storage space is
- *	reallocated to the given length; a null byte is stored at the
- *	end, but other bytes past the end of the original string
- *	representation are undefined.  The object's internal
+ *	If the size of objPtr's string representation is greater than length,
+ *	then it is reduced to length and a new terminating null byte is stored
+ *	in the strength. If the length of the string representation is greater
+ *	than length, the storage space is reallocated to the given length; a
+ *	null byte is stored at the end, but other bytes past the end of the
+ *	original string representation are undefined. The object's internal
  *	representation is changed to "expendable string".
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_SetObjLength(objPtr, length)
-    register Tcl_Obj *objPtr;	/* Pointer to object.  This object must
-				 * not currently be shared. */
-    register int length;	/* Number of bytes desired for string
+Tcl_SetObjLength(
+    register Tcl_Obj *objPtr,	/* Pointer to object. This object must not
+				 * currently be shared. */
+    register int length)	/* Number of bytes desired for string
 				 * representation of object, not including
 				 * terminating null byte. */
 {
@@ -804,64 +790,83 @@ Tcl_SetObjLength(objPtr, length)
 		"%d (integer overflow?)", length);
     }
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_SetObjLength called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_SetObjLength");
     }
     SetStringFromAny(NULL, objPtr);
-    
+
     stringPtr = GET_STRING(objPtr);
-    
-    /* Check that we're not extending a pure unicode string */
-    
-    if ((size_t)length > stringPtr->allocated && 
-	    (objPtr->bytes != NULL || stringPtr->hasUnicode == 0)) {
-	char *new;
 
+    /*
+     * Check that we're not extending a pure unicode string.
+     */
+
+    if ((size_t)length > stringPtr->allocated &&
+	    (objPtr->bytes != NULL || stringPtr->hasUnicode == 0)) {
 	/*
-	 * Not enough space in current string. Reallocate the string
-	 * space and free the old string.
+	 * Not enough space in current string. Reallocate the string space and
+	 * free the old string.
 	 */
-	if (objPtr->bytes != tclEmptyStringRep && objPtr->bytes != NULL) {
-	    new = (char *) ckrealloc((char *)objPtr->bytes,
-		    (unsigned)(length+1));
+
+	if (objPtr->bytes != tclEmptyStringRep) {
+	    objPtr->bytes = ckrealloc((char *) objPtr->bytes,
+		    (unsigned) (length + 1));
 	} else {
-	    new = (char *) ckalloc((unsigned) (length+1));
+	    char *newBytes = ckalloc((unsigned) (length+1));
+
 	    if (objPtr->bytes != NULL && objPtr->length != 0) {
-		memcpy((VOID *) new, (VOID *) objPtr->bytes,
-			(size_t) objPtr->length);
-		Tcl_InvalidateStringRep(objPtr);
+		memcpy(newBytes, objPtr->bytes, (size_t) objPtr->length);
+		TclInvalidateStringRep(objPtr);
 	    }
+	    objPtr->bytes = newBytes;
 	}
-	objPtr->bytes = new;
 	stringPtr->allocated = length;
-	/* Invalidate the unicode data. */
+
+	/*
+	 * Invalidate the unicode data.
+	 */
+
 	stringPtr->hasUnicode = 0;
     }
-    
+
     if (objPtr->bytes != NULL) {
-        objPtr->length = length;
-        if (objPtr->bytes != tclEmptyStringRep) {
-            /* Ensure the string is NULL-terminated */
-            objPtr->bytes[length] = 0;
-        }
-        /* Invalidate the unicode data. */
-        stringPtr->numChars = -1;
-        stringPtr->hasUnicode = 0;
+	objPtr->length = length;
+	if (objPtr->bytes != tclEmptyStringRep) {
+	    /*
+	     * Ensure the string is NUL-terminated.
+	     */
+
+	    objPtr->bytes[length] = 0;
+	}
+
+	/*
+	 * Invalidate the unicode data.
+	 */
+
+	stringPtr->numChars = -1;
+	stringPtr->hasUnicode = 0;
     } else {
-        /* Changing length of pure unicode string */
-        size_t uallocated = STRING_UALLOC(length);
+	/*
+	 * Changing length of pure unicode string.
+	 */
+
+	size_t uallocated = STRING_UALLOC(length);
 
 	stringCheckLimits(length);
-        if (uallocated > stringPtr->uallocated) {
+	if (uallocated > stringPtr->uallocated) {
 	    stringPtr = stringRealloc(stringPtr, length);
-            SET_STRING(objPtr, stringPtr);
-            stringPtr->uallocated = uallocated;
-        }
-        stringPtr->numChars = length;
-        stringPtr->hasUnicode = (length > 0);
-        /* Ensure the string is NULL-terminated */
-        stringPtr->unicode[length] = 0;
-        stringPtr->allocated = 0;
-        objPtr->length = 0;
+	    SET_STRING(objPtr, stringPtr);
+	    stringPtr->uallocated = uallocated;
+	}
+	stringPtr->numChars = length;
+	stringPtr->hasUnicode = (length > 0);
+
+	/*
+	 * Ensure the string is NUL-terminated.
+	 */
+
+	stringPtr->unicode[length] = 0;
+	stringPtr->allocated = 0;
+	objPtr->length = 0;
     }
 }
 
@@ -870,30 +875,29 @@ Tcl_SetObjLength(objPtr, length)
  *
  * Tcl_AttemptSetObjLength --
  *
- *	This procedure changes the length of the string representation
- *	of an object.  It uses the attempt* (non-panic'ing) memory allocators.
+ *	This function changes the length of the string representation of an
+ *	object. It uses the attempt* (non-panic'ing) memory allocators.
  *
  * Results:
  *	1 if the requested memory was allocated, 0 otherwise.
  *
  * Side effects:
- *	If the size of objPtr's string representation is greater than
- *	length, then it is reduced to length and a new terminating null
- *	byte is stored in the strength.  If the length of the string
- *	representation is greater than length, the storage space is
- *	reallocated to the given length; a null byte is stored at the
- *	end, but other bytes past the end of the original string
- *	representation are undefined.  The object's internal
+ *	If the size of objPtr's string representation is greater than length,
+ *	then it is reduced to length and a new terminating null byte is stored
+ *	in the strength. If the length of the string representation is greater
+ *	than length, the storage space is reallocated to the given length; a
+ *	null byte is stored at the end, but other bytes past the end of the
+ *	original string representation are undefined. The object's internal
  *	representation is changed to "expendable string".
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_AttemptSetObjLength(objPtr, length)
-    register Tcl_Obj *objPtr;	/* Pointer to object.  This object must
-				 * not currently be shared. */
-    register int length;	/* Number of bytes desired for string
+Tcl_AttemptSetObjLength(
+    register Tcl_Obj *objPtr,	/* Pointer to object. This object must not
+				 * currently be shared. */
+    register int length)	/* Number of bytes desired for string
 				 * representation of object, not including
 				 * terminating null byte. */
 {
@@ -907,56 +911,72 @@ Tcl_AttemptSetObjLength(objPtr, length)
 	return 0;
     }
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_AttemptSetObjLength called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_AttemptSetObjLength");
     }
     SetStringFromAny(NULL, objPtr);
-        
+
     stringPtr = GET_STRING(objPtr);
 
-    /* Check that we're not extending a pure unicode string */
+    /*
+     * Check that we're not extending a pure unicode string.
+     */
 
-    if (length > (int) stringPtr->allocated && 
+    if (length > (int) stringPtr->allocated &&
 	    (objPtr->bytes != NULL || stringPtr->hasUnicode == 0)) {
-	char *new;
+	char *newBytes;
 
 	/*
-	 * Not enough space in current string. Reallocate the string
-	 * space and free the old string.
+	 * Not enough space in current string. Reallocate the string space and
+	 * free the old string.
 	 */
-	if (objPtr->bytes != tclEmptyStringRep && objPtr->bytes != NULL) {
-	    new = (char *) attemptckrealloc((char *)objPtr->bytes,
-		    (unsigned)(length+1));
-	    if (new == NULL) {
+
+	if (objPtr->bytes != tclEmptyStringRep) {
+	    newBytes = attemptckrealloc(objPtr->bytes,
+		    (unsigned)(length + 1));
+	    if (newBytes == NULL) {
 		return 0;
 	    }
 	} else {
-	    new = (char *) attemptckalloc((unsigned) (length+1));
-	    if (new == NULL) {
+	    newBytes = attemptckalloc((unsigned) (length + 1));
+	    if (newBytes == NULL) {
 		return 0;
 	    }
 	    if (objPtr->bytes != NULL && objPtr->length != 0) {
- 	    	memcpy((VOID *) new, (VOID *) objPtr->bytes,
- 		    	(size_t) objPtr->length);
- 	    	Tcl_InvalidateStringRep(objPtr);
+		memcpy(newBytes, objPtr->bytes, (size_t) objPtr->length);
+		TclInvalidateStringRep(objPtr);
 	    }
 	}
-	objPtr->bytes = new;
+	objPtr->bytes = newBytes;
 	stringPtr->allocated = length;
-	/* Invalidate the unicode data. */
+
+	/*
+	 * Invalidate the unicode data.
+	 */
+
 	stringPtr->hasUnicode = 0;
     }
-    
+
     if (objPtr->bytes != NULL) {
 	objPtr->length = length;
 	if (objPtr->bytes != tclEmptyStringRep) {
-	    /* Ensure the string is NULL-terminated */
+	    /*
+	     * Ensure the string is NULL-terminated.
+	     */
+
 	    objPtr->bytes[length] = 0;
 	}
-	/* Invalidate the unicode data. */
+
+	/*
+	 * Invalidate the unicode data.
+	 */
+
 	stringPtr->numChars = -1;
 	stringPtr->hasUnicode = 0;
     } else {
-	/* Changing length of pure unicode string */
+	/*
+	 * Changing length of pure unicode string.
+	 */
+
 	size_t uallocated = STRING_UALLOC(length);
 	if (length > STRING_MAXCHARS) {
 	    return 0;
@@ -965,14 +985,18 @@ Tcl_AttemptSetObjLength(objPtr, length)
 	if (uallocated > stringPtr->uallocated) {
 	    stringPtr = stringAttemptRealloc(stringPtr, length);
 	    if (stringPtr == NULL) {
-	        return 0;
+		return 0;
 	    }
 	    SET_STRING(objPtr, stringPtr);
 	    stringPtr->uallocated = uallocated;
 	}
 	stringPtr->numChars = length;
 	stringPtr->hasUnicode = (length > 0);
-	/* Ensure the string is NULL-terminated */
+
+	/*
+	 * Ensure the string is NUL-terminated.
+	 */
+
 	stringPtr->unicode[length] = 0;
 	stringPtr->allocated = 0;
 	objPtr->length = 0;
@@ -997,27 +1021,23 @@ Tcl_AttemptSetObjLength(objPtr, length)
  */
 
 void
-Tcl_SetUnicodeObj(objPtr, unicode, numChars)
-    Tcl_Obj *objPtr;		/* The object to set the string of. */
-    CONST Tcl_UniChar *unicode;	/* The unicode string used to initialize
-				 * the object. */
-    int numChars;		/* Number of characters in the unicode
+Tcl_SetUnicodeObj(
+    Tcl_Obj *objPtr,		/* The object to set the string of. */
+    const Tcl_UniChar *unicode,	/* The unicode string used to initialize the
+				 * object. */
+    int numChars)		/* Number of characters in the unicode
 				 * string. */
 {
-    Tcl_ObjType *typePtr = objPtr->typePtr;
-
     if (Tcl_IsShared(objPtr)) {
 	Tcl_Panic("%s called with shared object", "Tcl_SetUnicodeObj");
     }
-    if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
-	typePtr->freeIntRepProc(objPtr);
-    }
+    TclFreeIntRep(objPtr);
     SetUnicodeObj(objPtr, unicode, numChars);
 }
 
 static int
 UnicodeLength(
-    CONST Tcl_UniChar *unicode)
+    const Tcl_UniChar *unicode)
 {
     int numChars = 0;
 
@@ -1031,11 +1051,11 @@ UnicodeLength(
 }
 
 static void
-SetUnicodeObj(objPtr, unicode, numChars)
-    Tcl_Obj *objPtr;		/* The object to set the string of. */
-    CONST Tcl_UniChar *unicode;	/* The unicode string used to initialize
-				 * the object. */
-    int numChars;		/* Number of characters in the unicode
+SetUnicodeObj(
+    Tcl_Obj *objPtr,		/* The object to set the string of. */
+    const Tcl_UniChar *unicode,	/* The unicode string used to initialize the
+				 * object. */
+    int numChars)		/* Number of characters in the unicode
 				 * string. */
 {
     String *stringPtr;
@@ -1048,7 +1068,7 @@ SetUnicodeObj(objPtr, unicode, numChars)
     /*
      * Allocate enough space for the String structure + Unicode string.
      */
-	
+
     stringCheckLimits(numChars);
     uallocated = STRING_UALLOC(numChars);
     stringPtr = (String *) ckalloc(STRING_SIZE(uallocated));
@@ -1057,10 +1077,10 @@ SetUnicodeObj(objPtr, unicode, numChars)
     stringPtr->uallocated = uallocated;
     stringPtr->hasUnicode = (numChars > 0);
     stringPtr->allocated = 0;
-    memcpy((VOID *) stringPtr->unicode, (VOID *) unicode, uallocated);
+    memcpy(stringPtr->unicode, unicode, uallocated);
     stringPtr->unicode[numChars] = 0;
 
-    Tcl_InvalidateStringRep(objPtr);
+    TclInvalidateStringRep(objPtr);
     objPtr->typePtr = &tclStringType;
     SET_STRING(objPtr, stringPtr);
 }
@@ -1068,35 +1088,42 @@ SetUnicodeObj(objPtr, unicode, numChars)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_AppendToObj --
+ * Tcl_AppendLimitedToObj --
  *
- *	This procedure appends a sequence of bytes to an object.
+ *	This function appends a limited number of bytes from a sequence of
+ *	bytes to an object, marking any limitation with an ellipsis.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The bytes at *bytes are appended to the string representation
- *	of objPtr.
+ *	The bytes at *bytes are appended to the string representation of
+ *	objPtr.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AppendToObj(objPtr, bytes, length)
-    register Tcl_Obj *objPtr;	/* Points to the object to append to. */
-    CONST char *bytes;		/* Points to the bytes to append to the
+Tcl_AppendLimitedToObj(
+    register Tcl_Obj *objPtr,	/* Points to the object to append to. */
+    const char *bytes,		/* Points to the bytes to append to the
 				 * object. */
-    register int length;	/* The number of bytes to append from
-				 * "bytes". If < 0, then append all bytes
-				 * up to NULL byte. */
+    register int length,	/* The number of bytes available to be
+				 * appended from "bytes". If < 0, then all
+				 * bytes up to a NUL byte are available. */
+    register int limit,		/* The maximum number of bytes to append to
+				 * the object. */
+    const char *ellipsis)	/* Ellipsis marker string, appended to the
+				 * object to indicate not all available bytes
+				 * at "bytes" were appended. */
 {
     String *stringPtr;
+    int toCopy = 0;
 
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_AppendToObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_AppendLimitedToObj");
     }
-    
+
     SetStringFromAny(NULL, objPtr);
 
     if (length < 0) {
@@ -1106,29 +1133,76 @@ Tcl_AppendToObj(objPtr, bytes, length)
 	return;
     }
 
+    if (length <= limit) {
+	toCopy = length;
+    } else {
+	if (ellipsis == NULL) {
+	    ellipsis = "...";
+	}
+	toCopy = Tcl_UtfPrev(bytes+limit+1-strlen(ellipsis), bytes) - bytes;
+    }
+
     /*
-     * If objPtr has a valid Unicode rep, then append the Unicode
-     * conversion of "bytes" to the objPtr's Unicode rep, otherwise
-     * append "bytes" to objPtr's string rep.
+     * If objPtr has a valid Unicode rep, then append the Unicode conversion
+     * of "bytes" to the objPtr's Unicode rep, otherwise append "bytes" to
+     * objPtr's string rep.
      */
 
     stringPtr = GET_STRING(objPtr);
     if (stringPtr->hasUnicode != 0) {
-	AppendUtfToUnicodeRep(objPtr, bytes, length);
+	AppendUtfToUnicodeRep(objPtr, bytes, toCopy);
+    } else {
+	AppendUtfToUtfRep(objPtr, bytes, toCopy);
+    }
 
-	stringPtr = GET_STRING(objPtr);
+    if (length <= limit) {
+	return;
+    }
+
+    stringPtr = GET_STRING(objPtr);
+    if (stringPtr->hasUnicode != 0) {
+	AppendUtfToUnicodeRep(objPtr, ellipsis, -1);
     } else {
-	AppendUtfToUtfRep(objPtr, bytes, length);
+	AppendUtfToUtfRep(objPtr, ellipsis, -1);
     }
 }
 
 /*
  *----------------------------------------------------------------------
  *
+ * Tcl_AppendToObj --
+ *
+ *	This function appends a sequence of bytes to an object.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The bytes at *bytes are appended to the string representation of
+ *	objPtr.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_AppendToObj(
+    register Tcl_Obj *objPtr,	/* Points to the object to append to. */
+    const char *bytes,		/* Points to the bytes to append to the
+				 * object. */
+    register int length)	/* The number of bytes to append from "bytes".
+				 * If < 0, then append all bytes up to NUL
+				 * byte. */
+{
+    Tcl_AppendLimitedToObj(objPtr, bytes, length, INT_MAX, NULL);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_AppendUnicodeToObj --
  *
- *	This procedure appends a Unicode string to an object in the
- *	most efficient manner possible.  Length must be >= 0.
+ *	This function appends a Unicode string to an object in the most
+ *	efficient manner possible. Length must be >= 0.
  *
  * Results:
  *	None.
@@ -1140,16 +1214,16 @@ Tcl_AppendToObj(objPtr, bytes, length)
  */
 
 void
-Tcl_AppendUnicodeToObj(objPtr, unicode, length)
-    register Tcl_Obj *objPtr;	/* Points to the object to append to. */
-    CONST Tcl_UniChar *unicode;	/* The unicode string to append to the
-			         * object. */
-    int length;			/* Number of chars in "unicode". */
+Tcl_AppendUnicodeToObj(
+    register Tcl_Obj *objPtr,	/* Points to the object to append to. */
+    const Tcl_UniChar *unicode,	/* The unicode string to append to the
+				 * object. */
+    int length)			/* Number of chars in "unicode". */
 {
     String *stringPtr;
 
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_AppendUnicodeToObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_AppendUnicodeToObj");
     }
 
     if (length == 0) {
@@ -1160,9 +1234,9 @@ Tcl_AppendUnicodeToObj(objPtr, unicode, length)
     stringPtr = GET_STRING(objPtr);
 
     /*
-     * If objPtr has a valid Unicode rep, then append the "unicode"
-     * to the objPtr's Unicode rep, otherwise the UTF conversion of
-     * "unicode" to objPtr's string rep.
+     * If objPtr has a valid Unicode rep, then append the "unicode" to the
+     * objPtr's Unicode rep, otherwise the UTF conversion of "unicode" to
+     * objPtr's string rep.
      */
 
     if (stringPtr->hasUnicode != 0) {
@@ -1177,23 +1251,23 @@ Tcl_AppendUnicodeToObj(objPtr, unicode, length)
  *
  * Tcl_AppendObjToObj --
  *
- *	This procedure appends the string rep of one object to another.
+ *	This function appends the string rep of one object to another.
  *	"objPtr" cannot be a shared object.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The string rep of appendObjPtr is appended to the string 
+ *	The string rep of appendObjPtr is appended to the string
  *	representation of objPtr.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AppendObjToObj(objPtr, appendObjPtr)
-    Tcl_Obj *objPtr;		/* Points to the object to append to. */
-    Tcl_Obj *appendObjPtr;	/* Object to append. */
+Tcl_AppendObjToObj(
+    Tcl_Obj *objPtr,		/* Points to the object to append to. */
+    Tcl_Obj *appendObjPtr)	/* Object to append. */
 {
     String *stringPtr;
     int length, numChars, allOneByteChars;
@@ -1202,25 +1276,22 @@ Tcl_AppendObjToObj(objPtr, appendObjPtr)
     SetStringFromAny(NULL, objPtr);
 
     /*
-     * If objPtr has a valid Unicode rep, then get a Unicode string
-     * from appendObjPtr and append it.
+     * If objPtr has a valid Unicode rep, then get a Unicode string from
+     * appendObjPtr and append it.
      */
 
     stringPtr = GET_STRING(objPtr);
     if (stringPtr->hasUnicode != 0) {
-	
 	/*
 	 * If appendObjPtr is not of the "String" type, don't convert it.
 	 */
 
 	if (appendObjPtr->typePtr == &tclStringType) {
 	    stringPtr = GET_STRING(appendObjPtr);
-	    if ((stringPtr->numChars == -1)
-		    || (stringPtr->hasUnicode == 0)) {
-		
+	    if ((stringPtr->numChars == -1) || (stringPtr->hasUnicode == 0)) {
 		/*
-		 * If appendObjPtr is a string obj with no valid Unicode
-		 * rep, then fill its unicode rep.
+		 * If appendObjPtr is a string obj with no valid Unicode rep,
+		 * then fill its unicode rep.
 		 */
 
 		FillUnicodeRep(appendObjPtr);
@@ -1229,19 +1300,19 @@ Tcl_AppendObjToObj(objPtr, appendObjPtr)
 	    AppendUnicodeToUnicodeRep(objPtr, stringPtr->unicode,
 		    stringPtr->numChars);
 	} else {
-	    bytes = Tcl_GetStringFromObj(appendObjPtr, &length);
+	    bytes = TclGetStringFromObj(appendObjPtr, &length);
 	    AppendUtfToUnicodeRep(objPtr, bytes, length);
 	}
 	return;
     }
 
     /*
-     * Append to objPtr's UTF string rep.  If we know the number of
-     * characters in both objects before appending, then set the combined
-     * number of characters in the final (appended-to) object.
+     * Append to objPtr's UTF string rep. If we know the number of characters
+     * in both objects before appending, then set the combined number of
+     * characters in the final (appended-to) object.
      */
 
-    bytes = Tcl_GetStringFromObj(appendObjPtr, &length);
+    bytes = TclGetStringFromObj(appendObjPtr, &length);
 
     allOneByteChars = 0;
     numChars = stringPtr->numChars;
@@ -1266,8 +1337,8 @@ Tcl_AppendObjToObj(objPtr, appendObjPtr)
  *
  * AppendUnicodeToUnicodeRep --
  *
- *	This procedure appends the contents of "unicode" to the Unicode
- *	rep of "objPtr".  objPtr must already have a valid Unicode rep.
+ *	This function appends the contents of "unicode" to the Unicode rep of
+ *	"objPtr". objPtr must already have a valid Unicode rep.
  *
  * Results:
  *	None.
@@ -1279,13 +1350,13 @@ Tcl_AppendObjToObj(objPtr, appendObjPtr)
  */
 
 static void
-AppendUnicodeToUnicodeRep(objPtr, unicode, appendNumChars)
-    Tcl_Obj *objPtr;	        /* Points to the object to append to. */
-    CONST Tcl_UniChar *unicode; /* String to append. */
-    int appendNumChars;	        /* Number of chars of "unicode" to append. */
+AppendUnicodeToUnicodeRep(
+    Tcl_Obj *objPtr,		/* Points to the object to append to. */
+    const Tcl_UniChar *unicode,	/* String to append. */
+    int appendNumChars)		/* Number of chars of "unicode" to append. */
 {
     String *stringPtr;
-    size_t numChars;
+    int numChars;
 
     if (appendNumChars < 0) {
 	appendNumChars = UnicodeLength(unicode);
@@ -1298,11 +1369,11 @@ AppendUnicodeToUnicodeRep(objPtr, unicode, appendNumChars)
     stringPtr = GET_STRING(objPtr);
 
     /*
-     * If not enough space has been allocated for the unicode rep,
-     * reallocate the internal rep object with additional space.  First
-     * try to double the required allocation; if that fails, try a more
-     * modest increase.  See the "TCL STRING GROWTH ALGORITHM" comment at
-     * the top of this file for an explanation of this growth algorithm.
+     * If not enough space has been allocated for the unicode rep, reallocate
+     * the internal rep object with additional space. First try to double the
+     * required allocation; if that fails, try a more modest increase. See the
+     * "TCL STRING GROWTH ALGORITHM" comment at the top of this file for an
+     * explanation of this growth algorithm.
      */
 
     numChars = stringPtr->numChars + appendNumChars;
@@ -1315,11 +1386,11 @@ AppendUnicodeToUnicodeRep(objPtr, unicode, appendNumChars)
 	 * due to the reallocs below.
 	 */
 	int offset = -1;
-	if (unicode >= stringPtr->unicode && unicode <= stringPtr->unicode
+	if (unicode >= stringPtr->unicode && unicode <= stringPtr->unicode 
 		+ stringPtr->uallocated / sizeof(Tcl_UniChar)) {
 	    offset = unicode - stringPtr->unicode;
 	}
-
+	
 	GrowUnicodeBuffer(objPtr, numChars);
 	stringPtr = GET_STRING(objPtr);
 
@@ -1334,13 +1405,13 @@ AppendUnicodeToUnicodeRep(objPtr, unicode, appendNumChars)
      * trailing null.
      */
 
-    memcpy((VOID*) (stringPtr->unicode + stringPtr->numChars), unicode,
+    memcpy(stringPtr->unicode + stringPtr->numChars, unicode,
 	    appendNumChars * sizeof(Tcl_UniChar));
     stringPtr->unicode[numChars] = 0;
     stringPtr->numChars = numChars;
     stringPtr->allocated = 0;
 
-    Tcl_InvalidateStringRep(objPtr);
+    TclInvalidateStringRep(objPtr);
 }
 
 /*
@@ -1348,8 +1419,8 @@ AppendUnicodeToUnicodeRep(objPtr, unicode, appendNumChars)
  *
  * AppendUnicodeToUtfRep --
  *
- *	This procedure converts the contents of "unicode" to UTF and
- *	appends the UTF to the string rep of "objPtr".
+ *	This function converts the contents of "unicode" to UTF and appends
+ *	the UTF to the string rep of "objPtr".
  *
  * Results:
  *	None.
@@ -1361,14 +1432,14 @@ AppendUnicodeToUnicodeRep(objPtr, unicode, appendNumChars)
  */
 
 static void
-AppendUnicodeToUtfRep(objPtr, unicode, numChars)
-    Tcl_Obj *objPtr;	        /* Points to the object to append to. */
-    CONST Tcl_UniChar *unicode; /* String to convert to UTF. */
-    int numChars;	        /* Number of chars of "unicode" to convert. */
+AppendUnicodeToUtfRep(
+    Tcl_Obj *objPtr,		/* Points to the object to append to. */
+    const Tcl_UniChar *unicode,	/* String to convert to UTF. */
+    int numChars)		/* Number of chars of "unicode" to convert. */
 {
     Tcl_DString dsPtr;
-    CONST char *bytes;
-    
+    const char *bytes;
+
     if (numChars < 0) {
 	numChars = UnicodeLength(unicode);
     }
@@ -1387,9 +1458,9 @@ AppendUnicodeToUtfRep(objPtr, unicode, numChars)
  *
  * AppendUtfToUnicodeRep --
  *
- *	This procedure converts the contents of "bytes" to Unicode and
- *	appends the Unicode to the Unicode rep of "objPtr".  objPtr must
- *	already have a valid Unicode rep.
+ *	This function converts the contents of "bytes" to Unicode and appends
+ *	the Unicode to the Unicode rep of "objPtr". objPtr must already have a
+ *	valid Unicode rep.
  *
  * Results:
  *	None.
@@ -1401,10 +1472,10 @@ AppendUnicodeToUtfRep(objPtr, unicode, numChars)
  */
 
 static void
-AppendUtfToUnicodeRep(objPtr, bytes, numBytes)
-    Tcl_Obj *objPtr;	/* Points to the object to append to. */
-    CONST char *bytes;	/* String to convert to Unicode. */
-    int numBytes;	/* Number of bytes of "bytes" to convert. */
+AppendUtfToUnicodeRep(
+    Tcl_Obj *objPtr,		/* Points to the object to append to. */
+    const char *bytes,		/* String to convert to Unicode. */
+    int numBytes)		/* Number of bytes of "bytes" to convert. */
 {
     Tcl_DString dsPtr;
     int numChars;
@@ -1416,7 +1487,7 @@ AppendUtfToUnicodeRep(objPtr, bytes, numBytes)
     if (numBytes == 0) {
 	return;
     }
-    
+
     Tcl_DStringInit(&dsPtr);
     numChars = Tcl_NumUtfChars(bytes, numBytes);
     unicode = (Tcl_UniChar *)Tcl_UtfToUniCharDString(bytes, numBytes, &dsPtr);
@@ -1429,8 +1500,8 @@ AppendUtfToUnicodeRep(objPtr, bytes, numBytes)
  *
  * AppendUtfToUtfRep --
  *
- *	This procedure appends "numBytes" bytes of "bytes" to the UTF string
- *	rep of "objPtr".  objPtr must already have a valid String rep.
+ *	This function appends "numBytes" bytes of "bytes" to the UTF string
+ *	rep of "objPtr". objPtr must already have a valid String rep.
  *
  * Results:
  *	None.
@@ -1442,10 +1513,10 @@ AppendUtfToUnicodeRep(objPtr, bytes, numBytes)
  */
 
 static void
-AppendUtfToUtfRep(objPtr, bytes, numBytes)
-    Tcl_Obj *objPtr;	/* Points to the object to append to. */
-    CONST char *bytes;	/* String to append. */
-    int numBytes;	/* Number of bytes of "bytes" to append. */
+AppendUtfToUtfRep(
+    Tcl_Obj *objPtr,		/* Points to the object to append to. */
+    const char *bytes,		/* String to append. */
+    int numBytes)		/* Number of bytes of "bytes" to append. */
 {
     String *stringPtr;
     int newLength, oldLength;
@@ -1470,7 +1541,7 @@ AppendUtfToUtfRep(objPtr, bytes, numBytes)
 
     stringPtr = GET_STRING(objPtr);
     if (newLength > (int) stringPtr->allocated) {
-        /*
+	/*
 	 * Protect against case where unicode points into the existing
 	 * stringPtr->unicode array.  Force it to follow any relocations
 	 * due to the reallocs below.
@@ -1482,10 +1553,10 @@ AppendUtfToUtfRep(objPtr, bytes, numBytes)
 	}
 
 	/*
-	 * There isn't currently enough space in the string representation
-	 * so allocate additional space.  First, try to double the length
-	 * required.  If that fails, try a more modest allocation.  See the
-	 * "TCL STRING GROWTH ALGORITHM" comment at the top of this file for an
+	 * There isn't currently enough space in the string representation so
+	 * allocate additional space. First, try to double the length
+	 * required. If that fails, try a more modest allocation. See the "TCL
+	 * STRING GROWTH ALGORITHM" comment at the top of this file for an
 	 * explanation of this growth algorithm.
 	 */
 
@@ -1497,7 +1568,7 @@ AppendUtfToUtfRep(objPtr, bytes, numBytes)
 	    unsigned int limit = INT_MAX - newLength;
 	    unsigned int extra = numBytes + TCL_GROWTH_MIN_ALLOC;
 	    int growth = (int) ((extra > limit) ? limit : extra);
-
+	
 	    Tcl_SetObjLength(objPtr, newLength + growth);
 	}
 
@@ -1510,12 +1581,11 @@ AppendUtfToUtfRep(objPtr, bytes, numBytes)
     /*
      * Invalidate the unicode data.
      */
-    
+
     stringPtr->numChars = -1;
     stringPtr->hasUnicode = 0;
-    
-    memcpy((VOID *) (objPtr->bytes + oldLength), (VOID *) bytes,
-	    (size_t) numBytes);
+
+    memcpy(objPtr->bytes + oldLength, bytes, (size_t) numBytes);
     objPtr->bytes[newLength] = 0;
     objPtr->length = newLength;
 }
@@ -1525,23 +1595,23 @@ AppendUtfToUtfRep(objPtr, bytes, numBytes)
  *
  * Tcl_AppendStringsToObjVA --
  *
- *	This procedure appends one or more null-terminated strings
- *	to an object.
+ *	This function appends one or more null-terminated strings to an
+ *	object.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The contents of all the string arguments are appended to the
- *	string representation of objPtr.
+ *	The contents of all the string arguments are appended to the string
+ *	representation of objPtr.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AppendStringsToObjVA (objPtr, argList)
-    Tcl_Obj *objPtr;		/* Points to the object to append to. */
-    va_list argList;		/* Variable argument list. */
+Tcl_AppendStringsToObjVA(
+    Tcl_Obj *objPtr,		/* Points to the object to append to. */
+    va_list argList)		/* Variable argument list. */
 {
 #define STATIC_LIST_SIZE 16
     String *stringPtr;
@@ -1553,7 +1623,7 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
     int nargs, i;
 
     if (Tcl_IsShared(objPtr)) {
-	panic("Tcl_AppendStringsToObj called with shared object");
+	Tcl_Panic("%s called with shared object", "Tcl_AppendStringsToObj");
     }
 
     SetStringFromAny(NULL, objPtr);
@@ -1566,10 +1636,10 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
     (void) Tcl_GetStringFromObj(objPtr, &oldLength);
 
     /*
-     * Figure out how much space is needed for all the strings, and
-     * expand the string representation if it isn't big enough. If no
-     * bytes would be appended, just return.  Note that on some platforms
-     * (notably OS/390) the argList is an array so we need to use memcpy.
+     * Figure out how much space is needed for all the strings, and expand the
+     * string representation if it isn't big enough. If no bytes would be
+     * appended, just return. Note that on some platforms (notably OS/390) the
+     * argList is an array so we need to use memcpy.
      */
 
     nargs = 0;
@@ -1579,21 +1649,22 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
 	if (string == NULL) {
 	    break;
 	}
- 	if (nargs >= nargs_space) {
- 	    /* 
- 	     * Expand the args buffer
- 	     */
- 	    nargs_space += STATIC_LIST_SIZE;
- 	    if (args == static_list) {
- 	    	args = (void *)ckalloc(nargs_space * sizeof(char *));
- 		for (i = 0; i < nargs; ++i) {
- 		    args[i] = static_list[i];
- 		}
- 	    } else {
- 		args = (void *)ckrealloc((void *)args,
+	if (nargs >= nargs_space) {
+	    /*
+	     * Expand the args buffer.
+	     */
+
+	    nargs_space += STATIC_LIST_SIZE;
+	    if (args == static_list) {
+		args = (void *) ckalloc(nargs_space * sizeof(char *));
+		for (i = 0; i < nargs; ++i) {
+		    args[i] = static_list[i];
+		}
+	    } else {
+		args = (void *) ckrealloc((void *) args,
 			nargs_space * sizeof(char *));
- 	    }
- 	}
+	    }
+	}
 	newLength += strlen(string);
 	args[nargs++] = string;
     }
@@ -1603,17 +1674,16 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
 
     stringPtr = GET_STRING(objPtr);
     if (oldLength + newLength > (int) stringPtr->allocated) {
-
 	/*
-	 * There isn't currently enough space in the string
-	 * representation, so allocate additional space.  If the current
-	 * string representation isn't empty (i.e. it looks like we're
-	 * doing a series of appends) then try to allocate extra space to
-	 * accomodate future growth: first try to double the required memory;
-	 * if that fails, try a more modest allocation.  See the "TCL STRING
-	 * GROWTH ALGORITHM" comment at the top of this file for an explanation
-	 * of this growth algorithm.  Otherwise, if the current string
-	 * representation is empty, exactly enough memory is allocated.
+	 * There isn't currently enough space in the string representation, so
+	 * allocate additional space. If the current string representation
+	 * isn't empty (i.e. it looks like we're doing a series of appends)
+	 * then try to allocate extra space to accomodate future growth: first
+	 * try to double the required memory; if that fails, try a more modest
+	 * allocation. See the "TCL STRING GROWTH ALGORITHM" comment at the
+	 * top of this file for an explanation of this growth algorithm.
+	 * Otherwise, if the current string representation is empty, exactly
+	 * enough memory is allocated.
 	 */
 
 	if (oldLength == 0) {
@@ -1622,20 +1692,20 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
 	    attemptLength = 2 * (oldLength + newLength);
 	    if (Tcl_AttemptSetObjLength(objPtr, attemptLength) == 0) {
 		attemptLength = oldLength + (2 * newLength) +
-		    TCL_GROWTH_MIN_ALLOC;
+			TCL_GROWTH_MIN_ALLOC;
 		Tcl_SetObjLength(objPtr, attemptLength);
 	    }
 	}
     }
 
     /*
-     * Make a second pass through the arguments, appending all the
-     * strings to the object.
+     * Make a second pass through the arguments, appending all the strings to
+     * the object.
      */
 
     dst = objPtr->bytes + oldLength;
     for (i = 0; i < nargs; ++i) {
- 	string = args[i];
+	string = args[i];
 	if (string == NULL) {
 	    break;
 	}
@@ -1647,10 +1717,10 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
     }
 
     /*
-     * Add a null byte to terminate the string.  However, be careful:
-     * it's possible that the object is totally empty (if it was empty
-     * originally and there was nothing to append).  In this case dst is
-     * NULL; just leave everything alone.
+     * Add a null byte to terminate the string. However, be careful: it's
+     * possible that the object is totally empty (if it was empty originally
+     * and there was nothing to append). In this case dst is NULL; just leave
+     * everything alone.
      */
 
     if (dst != NULL) {
@@ -1658,14 +1728,13 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
     }
     objPtr->length = oldLength + newLength;
 
-    done:
+  done:
     /*
-     * If we had to allocate a buffer from the heap, 
-     * free it now.
+     * If we had to allocate a buffer from the heap, free it now.
      */
- 
+
     if (args != static_list) {
-     	ckfree((void *)args);
+	ckfree((void *) args);
     }
 #undef STATIC_LIST_SIZE
 }
@@ -1675,37 +1744,1051 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
  *
  * Tcl_AppendStringsToObj --
  *
- *	This procedure appends one or more null-terminated strings
- *	to an object.
+ *	This function appends one or more null-terminated strings to an
+ *	object.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The contents of all the string arguments are appended to the
- *	string representation of objPtr.
+ *	The contents of all the string arguments are appended to the string
+ *	representation of objPtr.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_AppendStringsToObj TCL_VARARGS_DEF(Tcl_Obj *,arg1)
+Tcl_AppendStringsToObj(
+    Tcl_Obj *objPtr,
+    ...)
 {
-    register Tcl_Obj *objPtr;
     va_list argList;
 
-    objPtr = TCL_VARARGS_START(Tcl_Obj *,arg1,argList);
+    va_start(argList, objPtr);
     Tcl_AppendStringsToObjVA(objPtr, argList);
     va_end(argList);
 }
 
 /*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_AppendFormatToObj --
+ *
+ *	This function appends a list of Tcl_Obj's to a Tcl_Obj according to
+ *	the formatting instructions embedded in the format string. The
+ *	formatting instructions are inspired by sprintf(). Returns TCL_OK when
+ *	successful. If there's an error in the arguments, TCL_ERROR is
+ *	returned, and an error message is written to the interp, if non-NULL.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_AppendFormatToObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *appendObj,
+    const char *format,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    const char *span = format, *msg;
+    int numBytes = 0, objIndex = 0, gotXpg = 0, gotSequential = 0;
+    int originalLength, limit;
+    static const char *mixedXPG =
+	    "cannot mix \"%\" and \"%n$\" conversion specifiers";
+    static const char *badIndex[2] = {
+	"not enough arguments for all format specifiers",
+	"\"%n$\" argument index out of range"
+    };
+    static const char *overflow = "max size for a Tcl value exceeded";
+
+    if (Tcl_IsShared(appendObj)) {
+	Tcl_Panic("%s called with shared object", "Tcl_AppendFormatToObj");
+    }
+    TclGetStringFromObj(appendObj, &originalLength);
+    limit = INT_MAX - originalLength;
+
+    /*
+     * Format string is NUL-terminated.
+     */
+
+    while (*format != '\0') {
+	char *end;
+	int gotMinus, gotHash, gotZero, gotSpace, gotPlus, sawFlag;
+	int width, gotPrecision, precision, useShort, useWide, useBig;
+	int newXpg, numChars, allocSegment = 0, segmentLimit, segmentNumBytes;
+	Tcl_Obj *segment;
+	Tcl_UniChar ch;
+	int step = Tcl_UtfToUniChar(format, &ch);
+
+	format += step;
+	if (ch != '%') {
+	    numBytes += step;
+	    continue;
+	}
+	if (numBytes) {
+	    if (numBytes > limit) {
+		msg = overflow;
+		goto errorMsg;
+	    }
+	    Tcl_AppendToObj(appendObj, span, numBytes);
+	    limit -= numBytes;
+	    numBytes = 0;
+	}
+
+	/*
+	 * Saw a % : process the format specifier.
+	 *
+	 * Step 0. Handle special case of escaped format marker (i.e., %%).
+	 */
+
+	step = Tcl_UtfToUniChar(format, &ch);
+	if (ch == '%') {
+	    span = format;
+	    numBytes = step;
+	    format += step;
+	    continue;
+	}
+
+	/*
+	 * Step 1. XPG3 position specifier
+	 */
+
+	newXpg = 0;
+	if (isdigit(UCHAR(ch))) {
+	    int position = strtoul(format, &end, 10);
+	    if (*end == '$') {
+		newXpg = 1;
+		objIndex = position - 1;
+		format = end + 1;
+		step = Tcl_UtfToUniChar(format, &ch);
+	    }
+	}
+	if (newXpg) {
+	    if (gotSequential) {
+		msg = mixedXPG;
+		goto errorMsg;
+	    }
+	    gotXpg = 1;
+	} else {
+	    if (gotXpg) {
+		msg = mixedXPG;
+		goto errorMsg;
+	    }
+	    gotSequential = 1;
+	}
+	if ((objIndex < 0) || (objIndex >= objc)) {
+	    msg = badIndex[gotXpg];
+	    goto errorMsg;
+	}
+
+	/*
+	 * Step 2. Set of flags.
+	 */
+
+	gotMinus = gotHash = gotZero = gotSpace = gotPlus = 0;
+	sawFlag = 1;
+	do {
+	    switch (ch) {
+	    case '-':
+		gotMinus = 1;
+		break;
+	    case '#':
+		gotHash = 1;
+		break;
+	    case '0':
+		gotZero = 1;
+		break;
+	    case ' ':
+		gotSpace = 1;
+		break;
+	    case '+':
+		gotPlus = 1;
+		break;
+	    default:
+		sawFlag = 0;
+	    }
+	    if (sawFlag) {
+		format += step;
+		step = Tcl_UtfToUniChar(format, &ch);
+	    }
+	} while (sawFlag);
+
+	/*
+	 * Step 3. Minimum field width.
+	 */
+
+	width = 0;
+	if (isdigit(UCHAR(ch))) {
+	    width = strtoul(format, &end, 10);
+	    format = end;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	} else if (ch == '*') {
+	    if (objIndex >= objc - 1) {
+		msg = badIndex[gotXpg];
+		goto errorMsg;
+	    }
+	    if (TclGetIntFromObj(interp, objv[objIndex], &width) != TCL_OK) {
+		goto error;
+	    }
+	    if (width < 0) {
+		width = -width;
+		gotMinus = 1;
+	    }
+	    objIndex++;
+	    format += step;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	}
+	if (width > limit) {
+	    msg = overflow;
+	    goto errorMsg;
+	}
+
+	/*
+	 * Step 4. Precision.
+	 */
+
+	gotPrecision = precision = 0;
+	if (ch == '.') {
+	    gotPrecision = 1;
+	    format += step;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	}
+	if (isdigit(UCHAR(ch))) {
+	    precision = strtoul(format, &end, 10);
+	    format = end;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	} else if (ch == '*') {
+	    if (objIndex >= objc - 1) {
+		msg = badIndex[gotXpg];
+		goto errorMsg;
+	    }
+	    if (TclGetIntFromObj(interp, objv[objIndex], &precision)
+		    != TCL_OK) {
+		goto error;
+	    }
+
+	    /*
+	     * TODO: Check this truncation logic.
+	     */
+
+	    if (precision < 0) {
+		precision = 0;
+	    }
+	    objIndex++;
+	    format += step;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	}
+
+	/*
+	 * Step 5. Length modifier.
+	 */
+
+	useShort = useWide = useBig = 0;
+	if (ch == 'h') {
+	    useShort = 1;
+	    format += step;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	} else if (ch == 'l') {
+	    format += step;
+	    step = Tcl_UtfToUniChar(format, &ch);
+	    if (ch == 'l') {
+		useBig = 1;
+		format += step;
+		step = Tcl_UtfToUniChar(format, &ch);
+	    } else {
+#ifndef TCL_WIDE_INT_IS_LONG
+		useWide = 1;
+#endif
+	    }
+	}
+
+	format += step;
+	span = format;
+
+	/*
+	 * Step 6. The actual conversion character.
+	 */
+
+	segment = objv[objIndex];
+	numChars = -1;
+	if (ch == 'i') {
+	    ch = 'd';
+	}
+	switch (ch) {
+	case '\0':
+	    msg = "format string ended in middle of field specifier";
+	    goto errorMsg;
+	case 's':
+	    if (gotPrecision) {
+		numChars = Tcl_GetCharLength(segment);
+		if (precision < numChars) {
+		    segment = Tcl_GetRange(segment, 0, precision - 1);
+		    numChars = precision;
+		    Tcl_IncrRefCount(segment);
+		    allocSegment = 1;
+		}
+	    }
+	    break;
+	case 'c': {
+	    char buf[TCL_UTF_MAX];
+	    int code, length;
+
+	    if (TclGetIntFromObj(interp, segment, &code) != TCL_OK) {
+		goto error;
+	    }
+	    length = Tcl_UniCharToUtf(code, buf);
+	    segment = Tcl_NewStringObj(buf, length);
+	    Tcl_IncrRefCount(segment);
+	    allocSegment = 1;
+	    break;
+	}
+
+	case 'u':
+	    if (useBig) {
+		msg = "unsigned bignum format is invalid";
+		goto errorMsg;
+	    }
+	case 'd':
+	case 'o':
+	case 'x':
+	case 'X': {
+	    short int s = 0;	/* Silence compiler warning; only defined and
+				 * used when useShort is true. */
+	    long l;
+	    Tcl_WideInt w;
+	    mp_int big;
+	    int toAppend, isNegative = 0;
+
+	    if (useBig) {
+		if (Tcl_GetBignumFromObj(interp, segment, &big) != TCL_OK) {
+		    goto error;
+		}
+		isNegative = (mp_cmp_d(&big, 0) == MP_LT);
+	    } else if (useWide) {
+		if (Tcl_GetWideIntFromObj(NULL, segment, &w) != TCL_OK) {
+		    Tcl_Obj *objPtr;
+
+		    if (Tcl_GetBignumFromObj(interp,segment,&big) != TCL_OK) {
+			goto error;
+		    }
+		    mp_mod_2d(&big, (int) CHAR_BIT*sizeof(Tcl_WideInt), &big);
+		    objPtr = Tcl_NewBignumObj(&big);
+		    Tcl_IncrRefCount(objPtr);
+		    Tcl_GetWideIntFromObj(NULL, objPtr, &w);
+		    Tcl_DecrRefCount(objPtr);
+		}
+		isNegative = (w < (Tcl_WideInt)0);
+	    } else if (TclGetLongFromObj(NULL, segment, &l) != TCL_OK) {
+		if (Tcl_GetWideIntFromObj(NULL, segment, &w) != TCL_OK) {
+		    Tcl_Obj *objPtr;
+
+		    if (Tcl_GetBignumFromObj(interp,segment,&big) != TCL_OK) {
+			goto error;
+		    }
+		    mp_mod_2d(&big, (int) CHAR_BIT * sizeof(long), &big);
+		    objPtr = Tcl_NewBignumObj(&big);
+		    Tcl_IncrRefCount(objPtr);
+		    TclGetLongFromObj(NULL, objPtr, &l);
+		    Tcl_DecrRefCount(objPtr);
+		} else {
+		    l = Tcl_WideAsLong(w);
+		}
+		if (useShort) {
+		    s = (short int) l;
+		    isNegative = (s < (short int)0);
+		} else {
+		    isNegative = (l < (long)0);
+		}
+	    } else if (useShort) {
+		s = (short int) l;
+		isNegative = (s < (short int)0);
+	    } else {
+		isNegative = (l < (long)0);
+	    }
+
+	    segment = Tcl_NewObj();
+	    allocSegment = 1;
+	    segmentLimit = INT_MAX;
+	    Tcl_IncrRefCount(segment);
+
+	    if ((isNegative || gotPlus || gotSpace) && (useBig || (ch == 'd'))) {
+		Tcl_AppendToObj(segment, (isNegative ? "-" : gotPlus ? "+" : " "), 1);
+		segmentLimit -= 1;
+	    }
+
+	    if (gotHash) {
+		switch (ch) {
+		case 'o':
+		    Tcl_AppendToObj(segment, "0", 1);
+		    segmentLimit -= 1;
+		    precision--;
+		    break;
+		case 'x':
+		case 'X':
+		    Tcl_AppendToObj(segment, "0x", 2);
+		    segmentLimit -= 2;
+		    break;
+		}
+	    }
+
+	    switch (ch) {
+	    case 'd': {
+		int length;
+		Tcl_Obj *pure;
+		const char *bytes;
+
+		if (useShort) {
+		    pure = Tcl_NewIntObj((int)(s));
+		} else if (useWide) {
+		    pure = Tcl_NewWideIntObj(w);
+		} else if (useBig) {
+		    pure = Tcl_NewBignumObj(&big);
+		} else {
+		    pure = Tcl_NewLongObj(l);
+		}
+		Tcl_IncrRefCount(pure);
+		bytes = TclGetStringFromObj(pure, &length);
+
+		/*
+		 * Already did the sign above.
+		 */
+
+		if (*bytes == '-') {
+		    length--;
+		    bytes++;
+		}
+		toAppend = length;
+
+		/*
+		 * Canonical decimal string reps for integers are composed
+		 * entirely of one-byte encoded characters, so "length" is the
+		 * number of chars.
+		 */
+
+		if (gotPrecision) {
+		    if (length < precision) {
+			segmentLimit -= (precision - length);
+		    }
+		    while (length < precision) {
+			Tcl_AppendToObj(segment, "0", 1);
+			length++;
+		    }
+		    gotZero = 0;
+		}
+		if (gotZero) {
+		    length += Tcl_GetCharLength(segment);
+		    if (length < width) {
+			segmentLimit -= (width - length);
+		    }
+		    while (length < width) {
+			Tcl_AppendToObj(segment, "0", 1);
+			length++;
+		    }
+		}
+		if (toAppend > segmentLimit) {
+		    msg = overflow;
+		    goto errorMsg;
+		}
+		Tcl_AppendToObj(segment, bytes, toAppend);
+		Tcl_DecrRefCount(pure);
+		break;
+	    }
+
+	    case 'u':
+	    case 'o':
+	    case 'x':
+	    case 'X': {
+		Tcl_WideUInt bits = (Tcl_WideUInt)0;
+		Tcl_WideInt numDigits = (Tcl_WideInt)0;
+		int length, numBits = 4, base = 16;
+		int index = 0, shift = 0;
+		Tcl_Obj *pure;
+		char *bytes;
+
+		if (ch == 'u') {
+		    base = 10;
+		}
+		if (ch == 'o') {
+		    base = 8;
+		    numBits = 3;
+		}
+		if (useShort) {
+		    unsigned short int us = (unsigned short int) s;
+
+		    bits = (Tcl_WideUInt) us;
+		    while (us) {
+			numDigits++;
+			us /= base;
+		    }
+		} else if (useWide) {
+		    Tcl_WideUInt uw = (Tcl_WideUInt) w;
+
+		    bits = uw;
+		    while (uw) {
+			numDigits++;
+			uw /= base;
+		    }
+		} else if (useBig && big.used) {
+		    int leftover = (big.used * DIGIT_BIT) % numBits;
+		    mp_digit mask = (~(mp_digit)0) << (DIGIT_BIT-leftover);
+
+		    numDigits = 1 +
+			    (((Tcl_WideInt)big.used * DIGIT_BIT) / numBits);
+		    while ((mask & big.dp[big.used-1]) == 0) {
+			numDigits--;
+			mask >>= numBits;
+		    }
+		    if (numDigits > INT_MAX) {
+			msg = overflow;
+			goto errorMsg;
+		    }
+		} else if (!useBig) {
+		    unsigned long int ul = (unsigned long int) l;
+
+		    bits = (Tcl_WideUInt) ul;
+		    while (ul) {
+			numDigits++;
+			ul /= base;
+		    }
+		}
+
+		/*
+		 * Need to be sure zero becomes "0", not "".
+		 */
+
+		if ((numDigits == 0) && !((ch == 'o') && gotHash)) {
+		    numDigits = 1;
+		}
+		pure = Tcl_NewObj();
+		Tcl_SetObjLength(pure, (int)numDigits);
+		bytes = TclGetString(pure);
+		toAppend = length = (int)numDigits;
+		while (numDigits--) {
+		    int digitOffset;
+
+		    if (useBig && big.used) {
+			if (index < big.used && (size_t) shift <
+				CHAR_BIT*sizeof(Tcl_WideUInt) - DIGIT_BIT) {
+			    bits |= (((Tcl_WideUInt)big.dp[index++]) <<shift);
+			    shift += DIGIT_BIT;
+			}
+			shift -= numBits;
+		    }
+		    digitOffset = (int) (bits % base);
+		    if (digitOffset > 9) {
+			bytes[numDigits] = 'a' + digitOffset - 10;
+		    } else {
+			bytes[numDigits] = '0' + digitOffset;
+		    }
+		    bits /= base;
+		}
+		if (useBig) {
+		    mp_clear(&big);
+		}
+		if (gotPrecision) {
+		    if (length < precision) {
+			segmentLimit -= (precision - length);
+		    }
+		    while (length < precision) {
+			Tcl_AppendToObj(segment, "0", 1);
+			length++;
+		    }
+		    gotZero = 0;
+		}
+		if (gotZero) {
+		    length += Tcl_GetCharLength(segment);
+		    if (length < width) {
+			segmentLimit -= (width - length);
+		    }
+		    while (length < width) {
+			Tcl_AppendToObj(segment, "0", 1);
+			length++;
+		    }
+		}
+		if (toAppend > segmentLimit) {
+		    msg = overflow;
+		    goto errorMsg;
+		}
+		Tcl_AppendObjToObj(segment, pure);
+		Tcl_DecrRefCount(pure);
+		break;
+	    }
+
+	    }
+	    break;
+	}
+
+	case 'e':
+	case 'E':
+	case 'f':
+	case 'g':
+	case 'G': {
+#define MAX_FLOAT_SIZE 320
+	    char spec[2*TCL_INTEGER_SPACE + 9], *p = spec;
+	    double d;
+	    int length = MAX_FLOAT_SIZE;
+	    char *bytes;
+
+	    if (Tcl_GetDoubleFromObj(interp, segment, &d) != TCL_OK) {
+		/* TODO: Figure out ACCEPT_NAN here */
+		goto error;
+	    }
+	    *p++ = '%';
+	    if (gotMinus) {
+		*p++ = '-';
+	    }
+	    if (gotHash) {
+		*p++ = '#';
+	    }
+	    if (gotZero) {
+		*p++ = '0';
+	    }
+	    if (gotSpace) {
+		*p++ = ' ';
+	    }
+	    if (gotPlus) {
+		*p++ = '+';
+	    }
+	    if (width) {
+		p += sprintf(p, "%d", width);
+		if (width > length) {
+		    length = width;
+		}
+	    }
+	    if (gotPrecision) {
+		*p++ = '.';
+		p += sprintf(p, "%d", precision);
+		if (precision > INT_MAX - length) {
+		    msg=overflow;
+		    goto errorMsg;
+		}
+		length += precision;
+	    }
+
+	    /*
+	     * Don't pass length modifiers!
+	     */
+
+	    *p++ = (char) ch;
+	    *p = '\0';
+
+	    segment = Tcl_NewObj();
+	    allocSegment = 1;
+	    if (!Tcl_AttemptSetObjLength(segment, length)) {
+		msg = overflow;
+		goto errorMsg;
+	    }
+	    bytes = TclGetString(segment);
+	    if (!Tcl_AttemptSetObjLength(segment, sprintf(bytes, spec, d))) {
+		msg = overflow;
+		goto errorMsg;
+	    }
+	    break;
+	}
+	default:
+	    if (interp != NULL) {
+		Tcl_SetObjResult(interp,
+			Tcl_ObjPrintf("bad field specifier \"%c\"", ch));
+	    }
+	    goto error;
+	}
+
+	switch (ch) {
+	case 'E':
+	case 'G':
+	case 'X': {
+	    Tcl_SetObjLength(segment, Tcl_UtfToUpper(TclGetString(segment)));
+	}
+	}
+
+	if (width > 0) {
+	    if (numChars < 0) {
+		numChars = Tcl_GetCharLength(segment);
+	    }
+	    if (!gotMinus) {
+		if (numChars < width) {
+		    limit -= (width - numChars);
+		}
+		while (numChars < width) {
+		    Tcl_AppendToObj(appendObj, (gotZero ? "0" : " "), 1);
+		    numChars++;
+		}
+	    }
+	}
+
+	Tcl_GetStringFromObj(segment, &segmentNumBytes);
+	if (segmentNumBytes > limit) {
+	    if (allocSegment) {
+		Tcl_DecrRefCount(segment);
+	    }
+	    msg = overflow;
+	    goto errorMsg;
+	}
+	Tcl_AppendObjToObj(appendObj, segment);
+	limit -= segmentNumBytes;
+	if (allocSegment) {
+	    Tcl_DecrRefCount(segment);
+	}
+	if (width > 0) {
+	    if (numChars < width) {
+		limit -= (width - numChars);
+	    }
+	    while (numChars < width) {
+		Tcl_AppendToObj(appendObj, (gotZero ? "0" : " "), 1);
+		numChars++;
+	    }
+	}
+
+	objIndex += gotSequential;
+    }
+    if (numBytes) {
+	if (numBytes > limit) {
+	    msg = overflow;
+	    goto errorMsg;
+	}
+	Tcl_AppendToObj(appendObj, span, numBytes);
+	limit -= numBytes;
+	numBytes = 0;
+    }
+
+    return TCL_OK;
+
+  errorMsg:
+    if (interp != NULL) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(msg, -1));
+    }
+  error:
+    Tcl_SetObjLength(appendObj, originalLength);
+    return TCL_ERROR;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_Format--
+ *
+ * Results:
+ *	A refcount zero Tcl_Obj.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_Format(
+    Tcl_Interp *interp,
+    const char *format,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    int result;
+    Tcl_Obj *objPtr = Tcl_NewObj();
+    result = Tcl_AppendFormatToObj(interp, objPtr, format, objc, objv);
+    if (result != TCL_OK) {
+	Tcl_DecrRefCount(objPtr);
+	return NULL;
+    }
+    return objPtr;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * AppendPrintfToObjVA --
+ *
+ * Results:
+ *
+ * Side effects:
+ *
+ *---------------------------------------------------------------------------
+ */
+
+static void
+AppendPrintfToObjVA(
+    Tcl_Obj *objPtr,
+    const char *format,
+    va_list argList)
+{
+    int code, objc;
+    Tcl_Obj **objv, *list = Tcl_NewObj();
+    const char *p;
+    char *end;
+
+    p = format;
+    Tcl_IncrRefCount(list);
+    while (*p != '\0') {
+	int size = 0, seekingConversion = 1, gotPrecision = 0;
+	int lastNum = -1;
+
+	if (*p++ != '%') {
+	    continue;
+	}
+	if (*p == '%') {
+	    p++;
+	    continue;
+	}
+	do {
+	    switch (*p) {
+
+	    case '\0':
+		seekingConversion = 0;
+		break;
+	    case 's': {
+		const char *q, *end, *bytes = va_arg(argList, char *);
+		seekingConversion = 0;
+
+		/*
+		 * The buffer to copy characters from starts at bytes and ends
+		 * at either the first NUL byte, or after lastNum bytes, when
+		 * caller has indicated a limit.
+		 */
+
+		end = bytes;
+		while ((!gotPrecision || lastNum--) && (*end != '\0')) {
+		    end++;
+		}
+
+		/*
+		 * Within that buffer, we trim both ends if needed so that we
+		 * copy only whole characters, and avoid copying any partial
+		 * multi-byte characters.
+		 */
+
+		q = Tcl_UtfPrev(end, bytes);
+		if (!Tcl_UtfCharComplete(q, (int)(end - q))) {
+		    end = q;
+		}
+
+		q = bytes + TCL_UTF_MAX;
+		while ((bytes < end) && (bytes < q)
+			&& ((*bytes & 0xC0) == 0x80)) {
+		    bytes++;
+		}
+
+		Tcl_ListObjAppendElement(NULL, list,
+			Tcl_NewStringObj(bytes , (int)(end - bytes)));
+
+		break;
+	    }
+	    case 'c':
+	    case 'i':
+	    case 'u':
+	    case 'd':
+	    case 'o':
+	    case 'x':
+	    case 'X':
+		seekingConversion = 0;
+		switch (size) {
+		case -1:
+		case 0:
+		    Tcl_ListObjAppendElement(NULL, list, Tcl_NewLongObj(
+			    (long int)va_arg(argList, int)));
+		    break;
+		case 1:
+		    Tcl_ListObjAppendElement(NULL, list, Tcl_NewLongObj(
+			    va_arg(argList, long int)));
+		    break;
+		}
+		break;
+	    case 'e':
+	    case 'E':
+	    case 'f':
+	    case 'g':
+	    case 'G':
+		Tcl_ListObjAppendElement(NULL, list, Tcl_NewDoubleObj(
+			va_arg(argList, double)));
+		seekingConversion = 0;
+		break;
+	    case '*':
+		lastNum = (int)va_arg(argList, int);
+		Tcl_ListObjAppendElement(NULL, list, Tcl_NewIntObj(lastNum));
+		p++;
+		break;
+	    case '0': case '1': case '2': case '3': case '4':
+	    case '5': case '6': case '7': case '8': case '9':
+		lastNum = (int) strtoul(p, &end, 10);
+		p = end;
+		break;
+	    case '.':
+		gotPrecision = 1;
+		p++;
+		break;
+	    /* TODO: support for wide (and bignum?) arguments */
+	    case 'l':
+		size = 1;
+		p++;
+		break;
+	    case 'h':
+		size = -1;
+	    default:
+		p++;
+	    }
+	} while (seekingConversion);
+    }
+    TclListObjGetElements(NULL, list, &objc, &objv);
+    code = Tcl_AppendFormatToObj(NULL, objPtr, format, objc, objv);
+    if (code != TCL_OK) {
+	Tcl_AppendPrintfToObj(objPtr,
+		"Unable to format \"%s\" with supplied arguments: %s",
+		format, Tcl_GetString(list));
+    }
+    Tcl_DecrRefCount(list);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_AppendPrintfToObj --
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+void
+Tcl_AppendPrintfToObj(
+    Tcl_Obj *objPtr,
+    const char *format,
+    ...)
+{
+    va_list argList;
+
+    va_start(argList, format);
+    AppendPrintfToObjVA(objPtr, format, argList);
+    va_end(argList);
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * Tcl_ObjPrintf --
+ *
+ * Results:
+ *	A refcount zero Tcl_Obj.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+Tcl_ObjPrintf(
+    const char *format,
+    ...)
+{
+    va_list argList;
+    Tcl_Obj *objPtr = Tcl_NewObj();
+
+    va_start(argList, format);
+    AppendPrintfToObjVA(objPtr, format, argList);
+    va_end(argList);
+    return objPtr;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclStringObjReverse --
+ *
+ *	Implements the [string reverse] operation.
+ *
+ * Results:
+ *	An unshared Tcl value which is the [string reverse] of the argument
+ *	supplied.  When sharing rules permit, the returned value might be
+ *	the argument with modifications done in place.
+ *
+ * Side effects:
+ *	May allocate a new Tcl_Obj.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclStringObjReverse(
+    Tcl_Obj *objPtr)
+{
+    String *stringPtr;
+    int numChars = Tcl_GetCharLength(objPtr);
+    int i = 0, lastCharIdx = numChars - 1;
+    char *bytes;
+
+    if (numChars <= 1) {
+	return objPtr;
+    }
+
+    stringPtr = GET_STRING(objPtr);
+    if (stringPtr->hasUnicode) {
+	Tcl_UniChar *source = stringPtr->unicode;
+
+	if (Tcl_IsShared(objPtr)) {
+	    Tcl_UniChar *dest, ch = 0;
+
+	    /*
+	     * Create a non-empty, pure unicode value, so we can coax
+	     * Tcl_SetObjLength into growing the unicode rep buffer.
+	     */
+
+	    Tcl_Obj *resultPtr = Tcl_NewUnicodeObj(&ch, 1);
+	    Tcl_SetObjLength(resultPtr, numChars);
+	    dest = Tcl_GetUnicode(resultPtr);
+
+	    while (i < numChars) {
+		dest[i++] = source[lastCharIdx--];
+	    }
+	    return resultPtr;
+	}
+
+	while (i < lastCharIdx) {
+	    Tcl_UniChar tmp = source[lastCharIdx];
+	    source[lastCharIdx--] = source[i];
+	    source[i++] = tmp;
+	}
+	TclInvalidateStringRep(objPtr);
+	stringPtr->allocated = 0;
+	return objPtr;
+    }
+
+    bytes = TclGetString(objPtr);
+    if (Tcl_IsShared(objPtr)) {
+	char *dest;
+	Tcl_Obj *resultPtr = Tcl_NewObj();
+	Tcl_SetObjLength(resultPtr, numChars);
+	dest = TclGetString(resultPtr);
+	while (i < numChars) {
+	    dest[i++] = bytes[lastCharIdx--];
+	}
+	return resultPtr;
+    }
+
+    while (i < lastCharIdx) {
+	char tmp = bytes[lastCharIdx];
+	bytes[lastCharIdx--] = bytes[i];
+	bytes[i++] = tmp;
+    }
+    return objPtr;
+}
+
+/*
  *---------------------------------------------------------------------------
  *
  * FillUnicodeRep --
  *
  *	Populate the Unicode internal rep with the Unicode form of its string
- *	rep.  The object must alread have a "String" internal rep.
+ *	rep. The object must alread have a "String" internal rep.
  *
  * Results:
  *	None.
@@ -1717,15 +2800,15 @@ Tcl_AppendStringsToObj TCL_VARARGS_DEF(Tcl_Obj *,arg1)
  */
 
 static void
-FillUnicodeRep(objPtr)
-    Tcl_Obj *objPtr;	/* The object in which to fill the unicode rep. */
+FillUnicodeRep(
+    Tcl_Obj *objPtr)		/* The object in which to fill the unicode
+				 * rep. */
 {
     String *stringPtr;
     size_t uallocated;
-    char *src, *srcEnd;
+    char *srcEnd, *src = objPtr->bytes;
     Tcl_UniChar *dst;
-    src = objPtr->bytes;
-    
+
     stringPtr = GET_STRING(objPtr);
     if (stringPtr->numChars == -1) {
 	stringPtr->numChars = Tcl_NumUtfChars(src, objPtr->length);
@@ -1742,13 +2825,13 @@ FillUnicodeRep(objPtr)
     /*
      * Convert src to Unicode and store the coverted data in "unicode".
      */
-    
+
     srcEnd = src + objPtr->length;
     for (dst = stringPtr->unicode; src < srcEnd; dst++) {
 	src += TclUtfToUniChar(src, dst);
     }
     *dst = 0;
-    
+
     SET_STRING(objPtr, stringPtr);
 }
 
@@ -1757,8 +2840,8 @@ FillUnicodeRep(objPtr)
  *
  * DupStringInternalRep --
  *
- *	Initialize the internal representation of a new Tcl_Obj to a
- *	copy of the internal representation of an existing string object.
+ *	Initialize the internal representation of a new Tcl_Obj to a copy of
+ *	the internal representation of an existing string object.
  *
  * Results:
  *	None.
@@ -1771,32 +2854,31 @@ FillUnicodeRep(objPtr)
  */
 
 static void
-DupStringInternalRep(srcPtr, copyPtr)
-    register Tcl_Obj *srcPtr;	/* Object with internal rep to copy.  Must
-				 * have an internal rep of type "String". */
-    register Tcl_Obj *copyPtr;	/* Object with internal rep to set.  Must
-				 * not currently have an internal rep.*/
+DupStringInternalRep(
+    register Tcl_Obj *srcPtr,	/* Object with internal rep to copy. Must have
+				 * an internal rep of type "String". */
+    register Tcl_Obj *copyPtr)	/* Object with internal rep to set. Must not
+				 * currently have an internal rep.*/
 {
     String *srcStringPtr = GET_STRING(srcPtr);
     String *copyStringPtr = NULL;
 
     /*
-     * If the src obj is a string of 1-byte Utf chars, then copy the
-     * string rep of the source object and create an "empty" Unicode
-     * internal rep for the new object.  Otherwise, copy Unicode
-     * internal rep, and invalidate the string rep of the new object.
+     * If the src obj is a string of 1-byte Utf chars, then copy the string
+     * rep of the source object and create an "empty" Unicode internal rep for
+     * the new object. Otherwise, copy Unicode internal rep, and invalidate
+     * the string rep of the new object.
      */
-    
+
     if (srcStringPtr->hasUnicode == 0) {
-    	copyStringPtr = (String *) ckalloc(sizeof(String));
+	copyStringPtr = (String *) ckalloc(sizeof(String));
 	copyStringPtr->uallocated = 0;
     } else {
 	copyStringPtr = (String *) ckalloc(
-	    STRING_SIZE(srcStringPtr->uallocated));
+		STRING_SIZE(srcStringPtr->uallocated));
 	copyStringPtr->uallocated = srcStringPtr->uallocated;
 
-	memcpy((VOID *) copyStringPtr->unicode,
-		(VOID *) srcStringPtr->unicode,
+	memcpy(copyStringPtr->unicode, srcStringPtr->unicode,
 		(size_t) srcStringPtr->numChars * sizeof(Tcl_UniChar));
 	copyStringPtr->unicode[srcStringPtr->numChars] = 0;
     }
@@ -1805,9 +2887,9 @@ DupStringInternalRep(srcPtr, copyPtr)
     copyStringPtr->allocated = srcStringPtr->allocated;
 
     /*
-     * Tricky point: the string value was copied by generic object
-     * management code, so it doesn't contain any extra bytes that
-     * might exist in the source object.
+     * Tricky point: the string value was copied by generic object management
+     * code, so it doesn't contain any extra bytes that might exist in the
+     * source object.
      */
 
     copyStringPtr->allocated = copyPtr->length;
@@ -1827,21 +2909,21 @@ DupStringInternalRep(srcPtr, copyPtr)
  *	This operation always succeeds and returns TCL_OK.
  *
  * Side effects:
- *	Any old internal reputation for objPtr is freed and the
- *	internal representation is set to "String".
+ *	Any old internal reputation for objPtr is freed and the internal
+ *	representation is set to "String".
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetStringFromAny(interp, objPtr)
-    Tcl_Interp *interp;		/* Used for error reporting if not NULL. */
-    register Tcl_Obj *objPtr;	/* The object to convert. */
+SetStringFromAny(
+    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
+    register Tcl_Obj *objPtr)	/* The object to convert. */
 {
     /*
-     * The Unicode object is optimized for the case where each UTF char
-     * in a string is only one byte.  In this case, we store the value of
-     * numChars, but we don't copy the bytes to the unicodeObj->unicode.
+     * The Unicode object is optimized for the case where each UTF char in a
+     * string is only one byte. In this case, we store the value of numChars,
+     * but we don't copy the bytes to the unicodeObj->unicode.
      */
 
     if (objPtr->typePtr != &tclStringType) {
@@ -1851,9 +2933,7 @@ SetStringFromAny(interp, objPtr)
 	    if (objPtr->bytes == NULL) {
 		objPtr->typePtr->updateStringProc(objPtr);
 	    }
-	    if ((objPtr->typePtr->freeIntRepProc) != NULL) {
-		(*objPtr->typePtr->freeIntRepProc)(objPtr);
-	    }
+	    TclFreeIntRep(objPtr);
 	}
 	objPtr->typePtr = &tclStringType;
 
@@ -1867,10 +2947,10 @@ SetStringFromAny(interp, objPtr)
 	stringPtr->hasUnicode = 0;
 
 	if (objPtr->bytes != NULL) {
-	    stringPtr->allocated = objPtr->length;	    
-	    if (objPtr->bytes != tclEmptyStringRep) {
-		objPtr->bytes[objPtr->length] = 0;
-	    }
+	    stringPtr->allocated = objPtr->length;
+            if (objPtr->bytes != tclEmptyStringRep) {
+	        objPtr->bytes[objPtr->length] = 0;
+            }
 	} else {
 	    objPtr->length = 0;
 	}
@@ -1891,15 +2971,15 @@ SetStringFromAny(interp, objPtr)
  *	None.
  *
  * Side effects:
- *	The object's string may be set by converting its Unicode
- *	represention to UTF format.
+ *	The object's string may be set by converting its Unicode represention
+ *	to UTF format.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfString(objPtr)
-    Tcl_Obj *objPtr;		/* Object with string rep to update. */
+UpdateStringOfString(
+    Tcl_Obj *objPtr)		/* Object with string rep to update. */
 {
     int i, size;
     Tcl_UniChar *unicode;
@@ -1909,12 +2989,10 @@ UpdateStringOfString(objPtr)
 
     stringPtr = GET_STRING(objPtr);
     if ((objPtr->bytes == NULL) || (stringPtr->allocated == 0)) {
-
 	if (stringPtr->numChars <= 0) {
-
 	    /*
-	     * If there is no Unicode rep, or the string has 0 chars,
-	     * then set the string rep to an empty string.
+	     * If there is no Unicode rep, or the string has 0 chars, then set
+	     * the string rep to an empty string.
 	     */
 
 	    objPtr->bytes = tclEmptyStringRep;
@@ -1925,12 +3003,12 @@ UpdateStringOfString(objPtr)
 	unicode = stringPtr->unicode;
 
 	/*
-	 * Translate the Unicode string to UTF.  "size" will hold the
-	 * amount of space the UTF string needs.
+	 * Translate the Unicode string to UTF. "size" will hold the amount of
+	 * space the UTF string needs.
 	 */
 
 	if (stringPtr->numChars <= INT_MAX/TCL_UTF_MAX
-		&& stringPtr->allocated >= (size_t) (stringPtr->numChars * TCL_UTF_MAX)) {
+	    && stringPtr->allocated >= stringPtr->numChars * (size_t)TCL_UTF_MAX) {
 	    goto copyBytes;
 	}
 
@@ -1961,21 +3039,30 @@ UpdateStringOfString(objPtr)
  *
  * FreeStringInternalRep --
  *
- *	Deallocate the storage associated with a String data object's
- *	internal representation.
+ *	Deallocate the storage associated with a String data object's internal
+ *	representation.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Frees memory. 
+ *	Frees memory.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-FreeStringInternalRep(objPtr)
-    Tcl_Obj *objPtr;		/* Object with internal rep to free. */
+FreeStringInternalRep(
+    Tcl_Obj *objPtr)		/* Object with internal rep to free. */
 {
     ckfree((char *) GET_STRING(objPtr));
+    objPtr->typePtr = NULL;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclStubInit.c b/generic/tclStubInit.c
index 85dfe1c..fd4a222 100644
--- a/generic/tclStubInit.c
+++ b/generic/tclStubInit.c
@@ -10,7 +10,7 @@
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
+#include "tommath.h"
 
 /*
  * Remove macros that will interfere with the definitions below.
@@ -66,12 +66,26 @@ int TclSockMinimumBuffersOld(sock, size)
     int sock;
     int size;
 {
-    return TclSockMinimumBuffers((void *) (size_t) sock, size);
+    return TclSockMinimumBuffers(INT2PTR(sock), size);
+}
+#endif
+
+MODULE_SCOPE TclIntStubs tclIntStubs;
+MODULE_SCOPE TclIntPlatStubs tclIntPlatStubs;
+MODULE_SCOPE TclPlatStubs tclPlatStubs;
+MODULE_SCOPE TclStubs tclStubs;
+MODULE_SCOPE TclTomMathStubs tclTomMathStubs;
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+#undef TclWinNToHS
+unsigned short TclWinNToHS(unsigned short ns) {
+	return ntohs(ns);
 }
 #endif
 
 #ifdef __WIN32__
 #   define TclUnixWaitForFile 0
+#   define TclUnixCopyFile 0
 #   define TclpReaddir 0
 #   define TclpIsAtty 0
 #elif defined(__CYGWIN__)
@@ -98,12 +112,6 @@ TclWinGetPlatformId()
     return 2; /* VER_PLATFORM_WIN32_NT */;
 }
 
-TclPlatformType *
-TclWinGetPlatform()
-{
-    return &tclPlatform;
-}
-
 void *TclWinGetTclInstance()
 {
     void *hInstance = NULL;
@@ -112,12 +120,6 @@ void *TclWinGetTclInstance()
     return hInstance;
 }
 
-unsigned short
-TclWinNToHS(unsigned short ns)
-{
-    return ntohs(ns);
-}
-
 int
 TclWinSetSockOpt(SOCKET s, int level, int optname,
 	    const char *optval, int optlen)
@@ -190,7 +192,6 @@ Tcl_WinTCharToUtf(
 }
 
 #else /* UNIX and MAC */
-#   define TclpGetPid 0
 #   define TclpLocaltime_unix TclpLocaltime
 #   define TclpGmtime_unix TclpGmtime
 #endif
@@ -207,8 +208,8 @@ TclIntStubs tclIntStubs = {
     TCL_STUB_MAGIC,
     NULL,
     NULL, /* 0 */
-    TclAccessDeleteProc, /* 1 */
-    TclAccessInsertProc, /* 2 */
+    NULL, /* 1 */
+    NULL, /* 2 */
     TclAllocateFreeObjects, /* 3 */
     NULL, /* 4 */
     TclCleanupChildren, /* 5 */
@@ -219,7 +220,7 @@ TclIntStubs tclIntStubs = {
     TclCreateProc, /* 10 */
     TclDeleteCompiledLocalVars, /* 11 */
     TclDeleteVars, /* 12 */
-    TclDoGlob, /* 13 */
+    NULL, /* 13 */
     TclDumpMemoryInfo, /* 14 */
     NULL, /* 15 */
     TclExprFloatError, /* 16 */
@@ -233,13 +234,13 @@ TclIntStubs tclIntStubs = {
     TclFormatInt, /* 24 */
     TclFreePackageInfo, /* 25 */
     NULL, /* 26 */
-    TclGetDate, /* 27 */
+    NULL, /* 27 */
     TclpGetDefaultStdChannel, /* 28 */
     NULL, /* 29 */
     NULL, /* 30 */
     TclGetExtension, /* 31 */
     TclGetFrame, /* 32 */
-    TclGetInterpProc, /* 33 */
+    NULL, /* 33 */
     TclGetIntForIndex, /* 34 */
     NULL, /* 35 */
     TclGetLong, /* 36 */
@@ -249,16 +250,16 @@ TclIntStubs tclIntStubs = {
     TclGetOpenMode, /* 40 */
     TclGetOriginalCommand, /* 41 */
     TclpGetUserHome, /* 42 */
-    TclGlobalInvoke, /* 43 */
+    NULL, /* 43 */
     TclGuessPackageName, /* 44 */
     TclHideUnsafeCommands, /* 45 */
     TclInExit, /* 46 */
     NULL, /* 47 */
     NULL, /* 48 */
-    TclIncrVar2, /* 49 */
+    NULL, /* 49 */
     TclInitCompiledLocals, /* 50 */
     TclInterpInit, /* 51 */
-    TclInvoke, /* 52 */
+    NULL, /* 52 */
     TclInvokeObjectCommand, /* 53 */
     TclInvokeStringCommand, /* 54 */
     TclIsProc, /* 55 */
@@ -271,9 +272,9 @@ TclIntStubs tclIntStubs = {
     TclObjCommandComplete, /* 62 */
     TclObjInterpProc, /* 63 */
     TclObjInvoke, /* 64 */
-    TclObjInvokeGlobal, /* 65 */
-    TclOpenFileChannelDeleteProc, /* 66 */
-    TclOpenFileChannelInsertProc, /* 67 */
+    NULL, /* 65 */
+    NULL, /* 66 */
+    NULL, /* 67 */
     NULL, /* 68 */
     TclpAlloc, /* 69 */
     NULL, /* 70 */
@@ -300,7 +301,7 @@ TclIntStubs tclIntStubs = {
     TclProcCleanupProc, /* 91 */
     TclProcCompileProc, /* 92 */
     TclProcDeleteProc, /* 93 */
-    TclProcInterpProc, /* 94 */
+    NULL, /* 94 */
     NULL, /* 95 */
     TclRenameCommand, /* 96 */
     TclResetShadowedCmdRefs, /* 97 */
@@ -312,8 +313,8 @@ TclIntStubs tclIntStubs = {
     TclSockGetPort, /* 103 */
     TclSockMinimumBuffersOld, /* 104 */
     NULL, /* 105 */
-    TclStatDeleteProc, /* 106 */
-    TclStatInsertProc, /* 107 */
+    NULL, /* 106 */
+    NULL, /* 107 */
     TclTeardownNamespace, /* 108 */
     TclUpdateReturnInfo, /* 109 */
     TclSockMinimumBuffers, /* 110 */
@@ -340,13 +341,13 @@ TclIntStubs tclIntStubs = {
     Tcl_SetNamespaceResolvers, /* 131 */
     TclpHasSockets, /* 132 */
     TclpGetDate, /* 133 */
-    TclpStrftime, /* 134 */
-    TclpCheckStackSpace, /* 135 */
+    NULL, /* 134 */
+    NULL, /* 135 */
     NULL, /* 136 */
     NULL, /* 137 */
     TclGetEnv, /* 138 */
     NULL, /* 139 */
-    TclLooksLikeInt, /* 140 */
+    NULL, /* 140 */
     TclpGetCwd, /* 141 */
     TclSetByteCodeFromAny, /* 142 */
     TclAddLiteralObj, /* 143 */
@@ -381,11 +382,11 @@ TclIntStubs tclIntStubs = {
     TclInThreadExit, /* 172 */
     TclUniCharMatch, /* 173 */
     NULL, /* 174 */
-    NULL, /* 175 */
-    NULL, /* 176 */
-    NULL, /* 177 */
-    NULL, /* 178 */
-    NULL, /* 179 */
+    TclCallVarTraces, /* 175 */
+    TclCleanupVar, /* 176 */
+    TclVarErrMsg, /* 177 */
+    Tcl_SetStartupScript, /* 178 */
+    Tcl_GetStartupScript, /* 179 */
     NULL, /* 180 */
     NULL, /* 181 */
     TclpLocaltime, /* 182 */
@@ -404,58 +405,58 @@ TclIntStubs tclIntStubs = {
     NULL, /* 195 */
     NULL, /* 196 */
     NULL, /* 197 */
-    NULL, /* 198 */
-    TclMatchIsTrivial, /* 199 */
-    NULL, /* 200 */
-    NULL, /* 201 */
-    NULL, /* 202 */
-    NULL, /* 203 */
-    NULL, /* 204 */
-    NULL, /* 205 */
-    NULL, /* 206 */
-    NULL, /* 207 */
-    NULL, /* 208 */
+    TclObjGetFrame, /* 198 */
+    NULL, /* 199 */
+    TclpObjRemoveDirectory, /* 200 */
+    TclpObjCopyDirectory, /* 201 */
+    TclpObjCreateDirectory, /* 202 */
+    TclpObjDeleteFile, /* 203 */
+    TclpObjCopyFile, /* 204 */
+    TclpObjRenameFile, /* 205 */
+    TclpObjStat, /* 206 */
+    TclpObjAccess, /* 207 */
+    TclpOpenFileChannel, /* 208 */
     NULL, /* 209 */
     NULL, /* 210 */
     NULL, /* 211 */
-    NULL, /* 212 */
-    NULL, /* 213 */
-    NULL, /* 214 */
-    NULL, /* 215 */
-    NULL, /* 216 */
-    NULL, /* 217 */
-    NULL, /* 218 */
+    TclpFindExecutable, /* 212 */
+    TclGetObjNameOfExecutable, /* 213 */
+    TclSetObjNameOfExecutable, /* 214 */
+    TclStackAlloc, /* 215 */
+    TclStackFree, /* 216 */
+    TclPushStackFrame, /* 217 */
+    TclPopStackFrame, /* 218 */
     NULL, /* 219 */
     NULL, /* 220 */
     NULL, /* 221 */
     NULL, /* 222 */
     NULL, /* 223 */
-    NULL, /* 224 */
-    NULL, /* 225 */
-    NULL, /* 226 */
-    NULL, /* 227 */
-    NULL, /* 228 */
-    NULL, /* 229 */
-    NULL, /* 230 */
-    NULL, /* 231 */
-    NULL, /* 232 */
-    NULL, /* 233 */
-    NULL, /* 234 */
-    NULL, /* 235 */
-    NULL, /* 236 */
+    TclGetPlatform, /* 224 */
+    TclTraceDictPath, /* 225 */
+    TclObjBeingDeleted, /* 226 */
+    TclSetNsPath, /* 227 */
+    TclObjInterpProcCore, /* 228 */
+    TclPtrMakeUpvar, /* 229 */
+    TclObjLookupVar, /* 230 */
+    TclGetNamespaceFromObj, /* 231 */
+    TclEvalObjEx, /* 232 */
+    TclGetSrcInfoForPc, /* 233 */
+    TclVarHashCreateVar, /* 234 */
+    TclInitVarHashTable, /* 235 */
+    TclBackgroundException, /* 236 */
     NULL, /* 237 */
     NULL, /* 238 */
     NULL, /* 239 */
     NULL, /* 240 */
     NULL, /* 241 */
     NULL, /* 242 */
-    NULL, /* 243 */
+    TclDbDumpActiveObjects, /* 243 */
     NULL, /* 244 */
     NULL, /* 245 */
     NULL, /* 246 */
     NULL, /* 247 */
     NULL, /* 248 */
-    TclUnusedStubEntry, /* 249 */
+    TclDoubleDigits, /* 249 */
 };
 
 TclIntPlatStubs tclIntPlatStubs = {
@@ -476,7 +477,7 @@ TclIntPlatStubs tclIntPlatStubs = {
     TclpLocaltime_unix, /* 11 */
     TclpGmtime_unix, /* 12 */
     TclpInetNtoa, /* 13 */
-    NULL, /* 14 */
+    TclUnixCopyFile, /* 14 */
     NULL, /* 15 */
     NULL, /* 16 */
     NULL, /* 17 */
@@ -511,7 +512,7 @@ TclIntPlatStubs tclIntPlatStubs = {
     TclpCreatePipe, /* 14 */
     TclpCreateProcess, /* 15 */
     TclpIsAtty, /* 16 */
-    NULL, /* 17 */
+    TclUnixCopyFile, /* 17 */
     TclpMakeFile, /* 18 */
     TclpOpenFile, /* 19 */
     TclWinAddProcess, /* 20 */
@@ -519,7 +520,7 @@ TclIntPlatStubs tclIntPlatStubs = {
     TclpCreateTempFile, /* 22 */
     TclpGetTZName, /* 23 */
     TclWinNoBackslash, /* 24 */
-    TclWinGetPlatform, /* 25 */
+    NULL, /* 25 */
     TclWinSetInterfaces, /* 26 */
     TclWinFlushDirtyChannels, /* 27 */
     TclWinResetInterfaces, /* 28 */
@@ -540,12 +541,12 @@ TclIntPlatStubs tclIntPlatStubs = {
     TclpLocaltime_unix, /* 11 */
     TclpGmtime_unix, /* 12 */
     TclpInetNtoa, /* 13 */
-    NULL, /* 14 */
-    NULL, /* 15 */
-    NULL, /* 16 */
-    NULL, /* 17 */
-    NULL, /* 18 */
-    NULL, /* 19 */
+    TclUnixCopyFile, /* 14 */
+    TclMacOSXGetFileAttribute, /* 15 */
+    TclMacOSXSetFileAttribute, /* 16 */
+    TclMacOSXCopyFileAttributes, /* 17 */
+    TclMacOSXMatchType, /* 18 */
+    TclMacOSXNotifierAddRunLoopMode, /* 19 */
     NULL, /* 20 */
     NULL, /* 21 */
     NULL, /* 22 */
@@ -572,6 +573,75 @@ TclPlatStubs tclPlatStubs = {
 #endif /* MACOSX */
 };
 
+TclTomMathStubs tclTomMathStubs = {
+    TCL_STUB_MAGIC,
+    NULL,
+    TclBN_epoch, /* 0 */
+    TclBN_revision, /* 1 */
+    TclBN_mp_add, /* 2 */
+    TclBN_mp_add_d, /* 3 */
+    TclBN_mp_and, /* 4 */
+    TclBN_mp_clamp, /* 5 */
+    TclBN_mp_clear, /* 6 */
+    TclBN_mp_clear_multi, /* 7 */
+    TclBN_mp_cmp, /* 8 */
+    TclBN_mp_cmp_d, /* 9 */
+    TclBN_mp_cmp_mag, /* 10 */
+    TclBN_mp_copy, /* 11 */
+    TclBN_mp_count_bits, /* 12 */
+    TclBN_mp_div, /* 13 */
+    TclBN_mp_div_d, /* 14 */
+    TclBN_mp_div_2, /* 15 */
+    TclBN_mp_div_2d, /* 16 */
+    TclBN_mp_div_3, /* 17 */
+    TclBN_mp_exch, /* 18 */
+    TclBN_mp_expt_d, /* 19 */
+    TclBN_mp_grow, /* 20 */
+    TclBN_mp_init, /* 21 */
+    TclBN_mp_init_copy, /* 22 */
+    TclBN_mp_init_multi, /* 23 */
+    TclBN_mp_init_set, /* 24 */
+    TclBN_mp_init_size, /* 25 */
+    TclBN_mp_lshd, /* 26 */
+    TclBN_mp_mod, /* 27 */
+    TclBN_mp_mod_2d, /* 28 */
+    TclBN_mp_mul, /* 29 */
+    TclBN_mp_mul_d, /* 30 */
+    TclBN_mp_mul_2, /* 31 */
+    TclBN_mp_mul_2d, /* 32 */
+    TclBN_mp_neg, /* 33 */
+    TclBN_mp_or, /* 34 */
+    TclBN_mp_radix_size, /* 35 */
+    TclBN_mp_read_radix, /* 36 */
+    TclBN_mp_rshd, /* 37 */
+    TclBN_mp_shrink, /* 38 */
+    TclBN_mp_set, /* 39 */
+    TclBN_mp_sqr, /* 40 */
+    TclBN_mp_sqrt, /* 41 */
+    TclBN_mp_sub, /* 42 */
+    TclBN_mp_sub_d, /* 43 */
+    TclBN_mp_to_unsigned_bin, /* 44 */
+    TclBN_mp_to_unsigned_bin_n, /* 45 */
+    TclBN_mp_toradix_n, /* 46 */
+    TclBN_mp_unsigned_bin_size, /* 47 */
+    TclBN_mp_xor, /* 48 */
+    TclBN_mp_zero, /* 49 */
+    TclBN_reverse, /* 50 */
+    TclBN_fast_s_mp_mul_digs, /* 51 */
+    TclBN_fast_s_mp_sqr, /* 52 */
+    TclBN_mp_karatsuba_mul, /* 53 */
+    TclBN_mp_karatsuba_sqr, /* 54 */
+    TclBN_mp_toom_mul, /* 55 */
+    TclBN_mp_toom_sqr, /* 56 */
+    TclBN_s_mp_add, /* 57 */
+    TclBN_s_mp_mul_digs, /* 58 */
+    TclBN_s_mp_sqr, /* 59 */
+    TclBN_s_mp_sub, /* 60 */
+    TclBN_mp_init_set_int, /* 61 */
+    TclBN_mp_set_int, /* 62 */
+    TclBN_mp_cnt_lsb, /* 63 */
+};
+
 static TclStubHooks tclStubHooks = {
     &tclPlatStubs,
     &tclIntStubs,
@@ -1099,92 +1169,92 @@ TclStubs tclStubs = {
     Tcl_Seek, /* 491 */
     Tcl_Tell, /* 492 */
     Tcl_ChannelWideSeekProc, /* 493 */
-    NULL, /* 494 */
-    NULL, /* 495 */
-    NULL, /* 496 */
-    NULL, /* 497 */
-    NULL, /* 498 */
-    NULL, /* 499 */
-    NULL, /* 500 */
-    NULL, /* 501 */
-    NULL, /* 502 */
-    NULL, /* 503 */
-    NULL, /* 504 */
-    NULL, /* 505 */
-    NULL, /* 506 */
-    NULL, /* 507 */
-    NULL, /* 508 */
-    NULL, /* 509 */
-    NULL, /* 510 */
-    NULL, /* 511 */
-    NULL, /* 512 */
-    NULL, /* 513 */
-    NULL, /* 514 */
-    NULL, /* 515 */
-    NULL, /* 516 */
-    NULL, /* 517 */
-    NULL, /* 518 */
-    NULL, /* 519 */
-    NULL, /* 520 */
-    NULL, /* 521 */
-    NULL, /* 522 */
-    NULL, /* 523 */
-    NULL, /* 524 */
-    NULL, /* 525 */
-    NULL, /* 526 */
-    NULL, /* 527 */
-    NULL, /* 528 */
-    NULL, /* 529 */
-    NULL, /* 530 */
-    NULL, /* 531 */
-    NULL, /* 532 */
-    NULL, /* 533 */
-    NULL, /* 534 */
-    NULL, /* 535 */
-    NULL, /* 536 */
-    NULL, /* 537 */
-    NULL, /* 538 */
-    NULL, /* 539 */
-    NULL, /* 540 */
-    NULL, /* 541 */
-    NULL, /* 542 */
-    NULL, /* 543 */
-    NULL, /* 544 */
-    NULL, /* 545 */
-    NULL, /* 546 */
-    NULL, /* 547 */
-    NULL, /* 548 */
-    NULL, /* 549 */
-    NULL, /* 550 */
-    NULL, /* 551 */
-    NULL, /* 552 */
-    NULL, /* 553 */
+    Tcl_DictObjPut, /* 494 */
+    Tcl_DictObjGet, /* 495 */
+    Tcl_DictObjRemove, /* 496 */
+    Tcl_DictObjSize, /* 497 */
+    Tcl_DictObjFirst, /* 498 */
+    Tcl_DictObjNext, /* 499 */
+    Tcl_DictObjDone, /* 500 */
+    Tcl_DictObjPutKeyList, /* 501 */
+    Tcl_DictObjRemoveKeyList, /* 502 */
+    Tcl_NewDictObj, /* 503 */
+    Tcl_DbNewDictObj, /* 504 */
+    Tcl_RegisterConfig, /* 505 */
+    Tcl_CreateNamespace, /* 506 */
+    Tcl_DeleteNamespace, /* 507 */
+    Tcl_AppendExportList, /* 508 */
+    Tcl_Export, /* 509 */
+    Tcl_Import, /* 510 */
+    Tcl_ForgetImport, /* 511 */
+    Tcl_GetCurrentNamespace, /* 512 */
+    Tcl_GetGlobalNamespace, /* 513 */
+    Tcl_FindNamespace, /* 514 */
+    Tcl_FindCommand, /* 515 */
+    Tcl_GetCommandFromObj, /* 516 */
+    Tcl_GetCommandFullName, /* 517 */
+    Tcl_FSEvalFileEx, /* 518 */
+    Tcl_SetExitProc, /* 519 */
+    Tcl_LimitAddHandler, /* 520 */
+    Tcl_LimitRemoveHandler, /* 521 */
+    Tcl_LimitReady, /* 522 */
+    Tcl_LimitCheck, /* 523 */
+    Tcl_LimitExceeded, /* 524 */
+    Tcl_LimitSetCommands, /* 525 */
+    Tcl_LimitSetTime, /* 526 */
+    Tcl_LimitSetGranularity, /* 527 */
+    Tcl_LimitTypeEnabled, /* 528 */
+    Tcl_LimitTypeExceeded, /* 529 */
+    Tcl_LimitTypeSet, /* 530 */
+    Tcl_LimitTypeReset, /* 531 */
+    Tcl_LimitGetCommands, /* 532 */
+    Tcl_LimitGetTime, /* 533 */
+    Tcl_LimitGetGranularity, /* 534 */
+    Tcl_SaveInterpState, /* 535 */
+    Tcl_RestoreInterpState, /* 536 */
+    Tcl_DiscardInterpState, /* 537 */
+    Tcl_SetReturnOptions, /* 538 */
+    Tcl_GetReturnOptions, /* 539 */
+    Tcl_IsEnsemble, /* 540 */
+    Tcl_CreateEnsemble, /* 541 */
+    Tcl_FindEnsemble, /* 542 */
+    Tcl_SetEnsembleSubcommandList, /* 543 */
+    Tcl_SetEnsembleMappingDict, /* 544 */
+    Tcl_SetEnsembleUnknownHandler, /* 545 */
+    Tcl_SetEnsembleFlags, /* 546 */
+    Tcl_GetEnsembleSubcommandList, /* 547 */
+    Tcl_GetEnsembleMappingDict, /* 548 */
+    Tcl_GetEnsembleUnknownHandler, /* 549 */
+    Tcl_GetEnsembleFlags, /* 550 */
+    Tcl_GetEnsembleNamespace, /* 551 */
+    Tcl_SetTimeProc, /* 552 */
+    Tcl_QueryTimeProc, /* 553 */
     Tcl_ChannelThreadActionProc, /* 554 */
-    NULL, /* 555 */
-    NULL, /* 556 */
-    NULL, /* 557 */
-    NULL, /* 558 */
-    NULL, /* 559 */
-    NULL, /* 560 */
-    NULL, /* 561 */
-    NULL, /* 562 */
-    NULL, /* 563 */
-    NULL, /* 564 */
-    NULL, /* 565 */
-    NULL, /* 566 */
-    NULL, /* 567 */
-    NULL, /* 568 */
-    NULL, /* 569 */
-    NULL, /* 570 */
-    NULL, /* 571 */
-    NULL, /* 572 */
+    Tcl_NewBignumObj, /* 555 */
+    Tcl_DbNewBignumObj, /* 556 */
+    Tcl_SetBignumObj, /* 557 */
+    Tcl_GetBignumFromObj, /* 558 */
+    Tcl_TakeBignumFromObj, /* 559 */
+    Tcl_TruncateChannel, /* 560 */
+    Tcl_ChannelTruncateProc, /* 561 */
+    Tcl_SetChannelErrorInterp, /* 562 */
+    Tcl_GetChannelErrorInterp, /* 563 */
+    Tcl_SetChannelError, /* 564 */
+    Tcl_GetChannelError, /* 565 */
+    Tcl_InitBignumFromDouble, /* 566 */
+    Tcl_GetNamespaceUnknownHandler, /* 567 */
+    Tcl_SetNamespaceUnknownHandler, /* 568 */
+    Tcl_GetEncodingFromObj, /* 569 */
+    Tcl_GetEncodingSearchPath, /* 570 */
+    Tcl_SetEncodingSearchPath, /* 571 */
+    Tcl_GetEncodingNameFromEnvironment, /* 572 */
     Tcl_PkgRequireProc, /* 573 */
-    NULL, /* 574 */
-    NULL, /* 575 */
-    NULL, /* 576 */
-    NULL, /* 577 */
-    NULL, /* 578 */
-    NULL, /* 579 */
+    Tcl_AppendObjToErrorInfo, /* 574 */
+    Tcl_AppendLimitedToObj, /* 575 */
+    Tcl_Format, /* 576 */
+    Tcl_AppendFormatToObj, /* 577 */
+    Tcl_ObjPrintf, /* 578 */
+    Tcl_AppendPrintfToObj, /* 579 */
     NULL, /* 580 */
     NULL, /* 581 */
     NULL, /* 582 */
diff --git a/generic/tclStubLib.c b/generic/tclStubLib.c
index 7b62f5e..31fc865 100644
--- a/generic/tclStubLib.c
+++ b/generic/tclStubLib.c
@@ -12,12 +12,12 @@
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 TclStubs *tclStubsPtr = NULL;
 TclPlatStubs *tclPlatStubsPtr = NULL;
 TclIntStubs *tclIntStubsPtr = NULL;
 TclIntPlatStubs *tclIntPlatStubsPtr = NULL;
+TclTomMathStubs* tclTomMathStubsPtr = NULL;
 
 /*
  * Use our own ISDIGIT to avoid linking to libc on windows
@@ -44,10 +44,10 @@ TclIntPlatStubs *tclIntPlatStubsPtr = NULL;
  */
 #undef Tcl_InitStubs
 CONST char *
-Tcl_InitStubs(interp, version, exact)
-    Tcl_Interp *interp;
-    CONST char *version;
-    int exact;
+Tcl_InitStubs(
+    Tcl_Interp *interp,
+    CONST char *version,
+    int exact)
 {
     Interp *iPtr = (Interp *) interp;
     CONST char *actualVersion = NULL;
@@ -112,6 +112,61 @@ Tcl_InitStubs(interp, version, exact)
 }
 
 /*
+ *----------------------------------------------------------------------
+ *
+ * TclTomMathInitStubs --
+ *
+ *	Initializes the Stubs table for Tcl's subset of libtommath
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * This procedure should not be called directly, but rather through
+ * the TclTomMath_InitStubs macro, to insure that the Stubs table
+ * matches the header files used in compilation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#undef TclTomMathInitializeStubs
+
+CONST char*
+TclTomMathInitializeStubs(
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    CONST char* version,	/* Tcl version needed */
+    int epoch,			/* Stubs table epoch from the header files */
+    int revision		/* Stubs table revision number from the
+				 * header files */
+) {
+    int exact = 0;
+    const char* packageName = "tcl::tommath";
+    const char* errMsg = NULL;
+    ClientData pkgClientData = NULL;
+    const char* actualVersion = 
+	tclStubsPtr->tcl_PkgRequireEx(interp, packageName, version, exact, &pkgClientData);
+    TclTomMathStubs* stubsPtr = (TclTomMathStubs*) pkgClientData;
+    if (actualVersion == NULL) {
+	return NULL;
+    }
+    if (pkgClientData == NULL) {
+	errMsg = "missing stub table pointer";
+    } else if ((stubsPtr->tclBN_epoch)() != epoch) {
+	errMsg = "epoch number mismatch";
+    } else if ((stubsPtr->tclBN_revision)() != revision) {
+	errMsg = "requires a later revision";
+    } else {
+	tclTomMathStubsPtr = stubsPtr;
+	return actualVersion;
+    }
+    tclStubsPtr->tcl_ResetResult(interp);
+    tclStubsPtr->tcl_AppendResult(interp, "error loading ", packageName,
+		     " (requested version ", version,
+		     ", actual version ", actualVersion,
+		     "): ", errMsg, NULL);
+    return NULL;
+}
+
+/*
  * Local Variables:
  * mode: c
  * c-basic-offset: 4
diff --git a/generic/tclTest.c b/generic/tclTest.c
index 51051bd..1ba73e7 100644
--- a/generic/tclTest.c
+++ b/generic/tclTest.c
@@ -1,29 +1,24 @@
-/* 
+/*
  * tclTest.c --
  *
- *	This file contains C command procedures for a bunch of additional
- *	Tcl commands that are used for testing out Tcl's C interfaces.
- *	These commands are not normally included in Tcl applications;
- *	they're only used for testing.
+ *	This file contains C command functions for a bunch of additional Tcl
+ *	commands that are used for testing out Tcl's C interfaces. These
+ *	commands are not normally included in Tcl applications; they're only
+ *	used for testing.
  *
  * Copyright (c) 1993-1994 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-2000 Ajuba Solutions.
  * Copyright (c) 2003 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-#ifndef _WIN64
-/* See [Bug 3354324]: file mtime sets wrong time */
-#   define _USE_32BIT_TIME_T
-#endif
-
 #define TCL_TEST
-#include <sys/stat.h>
 #include "tclInt.h"
-#include "tclPort.h"
+
+#include <math.h>
 
 /*
  * Required for Testregexp*Cmd
@@ -45,24 +40,25 @@
  */
 
 /*
- * Dynamic string shared by TestdcallCmd and DelCallbackProc;  used
- * to collect the results of the various deletion callbacks.
+ * Dynamic string shared by TestdcallCmd and DelCallbackProc; used to collect
+ * the results of the various deletion callbacks.
  */
 
 static Tcl_DString delString;
 static Tcl_Interp *delInterp;
 
 /*
- * One of the following structures exists for each asynchronous
- * handler created by the "testasync" command".
+ * One of the following structures exists for each asynchronous handler
+ * created by the "testasync" command".
  */
 
 typedef struct TestAsyncHandler {
-    int id;				/* Identifier for this handler. */
-    Tcl_AsyncHandler handler;		/* Tcl's token for the handler. */
-    char *command;			/* Command to invoke when the
-					 * handler is invoked. */
-    struct TestAsyncHandler *nextPtr;	/* Next is list of handlers. */
+    int id;			/* Identifier for this handler. */
+    Tcl_AsyncHandler handler;	/* Tcl's token for the handler. */
+    char *command;		/* Command to invoke when the handler is
+				 * invoked. */
+    struct TestAsyncHandler *nextPtr;
+				/* Next is list of handlers. */
 } TestAsyncHandler;
 
 TCL_DECLARE_MUTEX(asyncTestMutex);
@@ -70,33 +66,33 @@ TCL_DECLARE_MUTEX(asyncTestMutex);
 static TestAsyncHandler *firstHandler = NULL;
 
 /*
- * The dynamic string below is used by the "testdstring" command
- * to test the dynamic string facilities.
+ * The dynamic string below is used by the "testdstring" command to test the
+ * dynamic string facilities.
  */
 
 static Tcl_DString dstring;
 
 /*
- * The command trace below is used by the "testcmdtraceCmd" command
- * to test the command tracing facilities.
+ * The command trace below is used by the "testcmdtraceCmd" command to test
+ * the command tracing facilities.
  */
 
 static Tcl_Trace cmdTrace;
 
 /*
- * One of the following structures exists for each command created
- * by TestdelCmd:
+ * One of the following structures exists for each command created by
+ * TestdelCmd:
  */
 
 typedef struct DelCmd {
     Tcl_Interp *interp;		/* Interpreter in which command exists. */
-    char *deleteCmd;		/* Script to execute when command is
-				 * deleted.  Malloc'ed. */
+    char *deleteCmd;		/* Script to execute when command is deleted.
+				 * Malloc'ed. */
 } DelCmd;
 
 /*
  * The following is used to keep track of an encoding that invokes a Tcl
- * command. 
+ * command.
  */
 
 typedef struct TclEncoding {
@@ -106,337 +102,347 @@ typedef struct TclEncoding {
 } TclEncoding;
 
 /*
- * The counter below is used to determine if the TestsaveresultFree
- * routine was called for a result.
+ * The counter below is used to determine if the TestsaveresultFree routine
+ * was called for a result.
  */
 
 static int freeCount;
 
 /*
- * Boolean flag used by the "testsetmainloop" and "testexitmainloop"
- * commands.
+ * Boolean flag used by the "testsetmainloop" and "testexitmainloop" commands.
  */
+
 static int exitMainLoop = 0;
 
 /*
  * Event structure used in testing the event queue management procedures.
  */
+
 typedef struct TestEvent {
     Tcl_Event header;		/* Header common to all events */
-    Tcl_Interp* interp;		/* Interpreter that will handle the event */
-    Tcl_Obj* command;		/* Command to evaluate when the event occurs */
-    Tcl_Obj* tag;		/* Tag for this event used to delete it */
+    Tcl_Interp *interp;		/* Interpreter that will handle the event */
+    Tcl_Obj *command;		/* Command to evaluate when the event occurs */
+    Tcl_Obj *tag;		/* Tag for this event used to delete it */
 } TestEvent;
 
 /*
+ * Simple detach/attach facility for testchannel cut|splice. Allow testing of
+ * channel transfer in core testsuite.
+ */
+
+typedef struct TestChannel {
+    Tcl_Channel chan;		/* Detached channel */
+    struct TestChannel *nextPtr;/* Next in detached channel pool */
+} TestChannel;
+
+static TestChannel *firstDetached;
+
+/*
  * Forward declarations for procedures defined later in this file:
  */
 
-int			Tcltest_Init _ANSI_ARGS_((Tcl_Interp *interp));
-static int		AsyncHandlerProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int code));
-static void		CleanupTestSetassocdataTests _ANSI_ARGS_((
-			    ClientData clientData, Tcl_Interp *interp));
-static void		CmdDelProc1 _ANSI_ARGS_((ClientData clientData));
-static void		CmdDelProc2 _ANSI_ARGS_((ClientData clientData));
-static int		CmdProc1 _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		CmdProc2 _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static void		CmdTraceDeleteProc _ANSI_ARGS_((
+int			Tcltest_Init(Tcl_Interp *interp);
+static int		AsyncHandlerProc(ClientData clientData,
+			    Tcl_Interp *interp, int code);
+#ifdef TCL_THREADS
+static Tcl_ThreadCreateType AsyncThreadProc(ClientData);
+#endif
+static void		CleanupTestSetassocdataTests(
+			    ClientData clientData, Tcl_Interp *interp);
+static void		CmdDelProc1(ClientData clientData);
+static void		CmdDelProc2(ClientData clientData);
+static int		CmdProc1(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		CmdProc2(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static void		CmdTraceDeleteProc(
 			    ClientData clientData, Tcl_Interp *interp,
 			    int level, char *command, Tcl_CmdProc *cmdProc,
 			    ClientData cmdClientData, int argc,
-			    char **argv));
-static void		CmdTraceProc _ANSI_ARGS_((ClientData clientData,
+			    char **argv);
+static void		CmdTraceProc(ClientData clientData,
 			    Tcl_Interp *interp, int level, char *command,
 			    Tcl_CmdProc *cmdProc, ClientData cmdClientData,
-                            int argc, char **argv));
-static int		CreatedCommandProc _ANSI_ARGS_((
+			    int argc, char **argv);
+static int		CreatedCommandProc(
 			    ClientData clientData, Tcl_Interp *interp,
-			    int argc, CONST char **argv));
-static int		CreatedCommandProc2 _ANSI_ARGS_((
+			    int argc, const char **argv);
+static int		CreatedCommandProc2(
 			    ClientData clientData, Tcl_Interp *interp,
-			    int argc, CONST char **argv));
-static void		DelCallbackProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp));
-static int		DelCmdProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static void		DelDeleteProc _ANSI_ARGS_((ClientData clientData));
-static void		EncodingFreeProc _ANSI_ARGS_((ClientData clientData));
-static int		EncodingToUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int argc, const char **argv);
+static void		DelCallbackProc(ClientData clientData,
+			    Tcl_Interp *interp);
+static int		DelCmdProc(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static void		DelDeleteProc(ClientData clientData);
+static void		EncodingFreeProc(ClientData clientData);
+static int		EncodingToUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst,
 			    int dstLen, int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static int		EncodingFromUtfProc _ANSI_ARGS_((ClientData clientData,
-			    CONST char *src, int srcLen, int flags,
+			    int *dstCharsPtr);
+static int		EncodingFromUtfProc(ClientData clientData,
+			    const char *src, int srcLen, int flags,
 			    Tcl_EncodingState *statePtr, char *dst,
 			    int dstLen, int *srcReadPtr, int *dstWrotePtr,
-			    int *dstCharsPtr));
-static void		ExitProcEven _ANSI_ARGS_((ClientData clientData));
-static void		ExitProcOdd _ANSI_ARGS_((ClientData clientData));
-static int              GetTimesCmd _ANSI_ARGS_((ClientData clientData,
-                            Tcl_Interp *interp, int argc, CONST char **argv));
-static void		MainLoop _ANSI_ARGS_((void));
-static int              NoopCmd _ANSI_ARGS_((ClientData clientData,
-                            Tcl_Interp *interp, int argc, CONST char **argv));
-static int              NoopObjCmd _ANSI_ARGS_((ClientData clientData,
-                            Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		ObjTraceProc _ANSI_ARGS_(( ClientData clientData,
-						   Tcl_Interp* interp,
-						   int level,
-						   CONST char* command,
-						   Tcl_Command commandToken,
-						   int objc,
-						   Tcl_Obj *CONST objv[] ));
-static void		ObjTraceDeleteProc _ANSI_ARGS_(( ClientData ));
-static void		PrintParse _ANSI_ARGS_((Tcl_Interp *interp,
-						Tcl_Parse *parsePtr));
-static void		SpecialFree _ANSI_ARGS_((char *blockPtr));
-static int		StaticInitProc _ANSI_ARGS_((Tcl_Interp *interp));
-static int		TestaccessprocCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		PretendTclpAccess _ANSI_ARGS_((CONST char *path,
-			   int mode));
-static int		TestAccessProc1 _ANSI_ARGS_((CONST char *path,
-			   int mode));
-static int		TestAccessProc2 _ANSI_ARGS_((CONST char *path,
-			   int mode));
-static int		TestAccessProc3 _ANSI_ARGS_((CONST char *path,
-			   int mode));
-static int		TestasyncCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestcmdinfoCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestcmdtokenCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestcmdtraceCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestcreatecommandCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestdcallCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestdelCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestdelassocdataCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestdstringCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestencodingObjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc, 
-			    Tcl_Obj *CONST objv[]));
-static int		TestevalexObjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc, 
-			    Tcl_Obj *CONST objv[]));
-static int		TestevalobjvObjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc, 
-			    Tcl_Obj *CONST objv[]));
-static int		TesteventObjCmd _ANSI_ARGS_((ClientData unused,
-						     Tcl_Interp* interp,
-						     int argc,
-						     Tcl_Obj *CONST objv[]));
-static int		TesteventProc _ANSI_ARGS_((Tcl_Event* event,
-						   int flags));
-static int		TesteventDeleteProc _ANSI_ARGS_((
-			    Tcl_Event* event,
-			    ClientData clientData));
-static int		TestexithandlerCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestexprlongCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestexprlongobjCmd _ANSI_ARGS_((ClientData dummy,
+			    int *dstCharsPtr);
+static void		ExitProcEven(ClientData clientData);
+static void		ExitProcOdd(ClientData clientData);
+static int		GetTimesCmd(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static void		MainLoop(void);
+static int		NoopCmd(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		NoopObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		ObjTraceProc(ClientData clientData,
+			    Tcl_Interp *interp, int level, const char *command,
+			    Tcl_Command commandToken, int objc,
+			    Tcl_Obj *const objv[]);
+static void		ObjTraceDeleteProc(ClientData clientData);
+static void		PrintParse(Tcl_Interp *interp, Tcl_Parse *parsePtr);
+static void		SpecialFree(char *blockPtr);
+static int		StaticInitProc(Tcl_Interp *interp);
+#undef USE_OBSOLETE_FS_HOOKS
+#ifdef USE_OBSOLETE_FS_HOOKS
+static int		TestaccessprocCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestopenfilechannelprocCmd(
+			    ClientData dummy, Tcl_Interp *interp, int argc,
+			    const char **argv);
+static int		TeststatprocCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		PretendTclpAccess(const char *path, int mode);
+static int		TestAccessProc1(const char *path, int mode);
+static int		TestAccessProc2(const char *path, int mode);
+static int		TestAccessProc3(const char *path, int mode);
+static Tcl_Channel	PretendTclpOpenFileChannel(
+			    Tcl_Interp *interp, const char *fileName,
+			    const char *modeString, int permissions);
+static Tcl_Channel	TestOpenFileChannelProc1(
+			    Tcl_Interp *interp, const char *fileName,
+			    const char *modeString, int permissions);
+static Tcl_Channel	TestOpenFileChannelProc2(
+			    Tcl_Interp *interp, const char *fileName,
+			    const char *modeString, int permissions);
+static Tcl_Channel	TestOpenFileChannelProc3(
+			    Tcl_Interp *interp, const char *fileName,
+			    const char *modeString, int permissions);
+static int		PretendTclpStat(const char *path, struct stat *buf);
+static int		TestStatProc1(const char *path, struct stat *buf);
+static int		TestStatProc2(const char *path, struct stat *buf);
+static int		TestStatProc3(const char *path, struct stat *buf);
+#endif
+static int		TestasyncCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestcmdinfoCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestcmdtokenCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestcmdtraceCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestconcatobjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestcreatecommandCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestdcallCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestdelCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestdelassocdataCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestdoubledigitsObjCmd(ClientData dummy,
+					       Tcl_Interp* interp,
+					       int objc, Tcl_Obj* const objv[]);
+static int		TestdstringCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestencodingObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TestevalexObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TestevalobjvObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TesteventObjCmd(ClientData unused,
+			    Tcl_Interp *interp, int argc,
+			    Tcl_Obj *const objv[]);
+static int		TesteventProc(Tcl_Event *event, int flags);
+static int		TesteventDeleteProc(Tcl_Event *event,
+			    ClientData clientData);
+static int		TestexithandlerCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestexprlongCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestexprlongobjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestexprparserObjCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Obj *const objv[]);
+static int		TestexprdoubleCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestexprdoubleobjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestexprstringCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestfileCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-static int		TestfilelinkCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-static int		TestfeventCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestgetassocdataCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestgetplatformCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestgetvarfullnameCmd _ANSI_ARGS_((
+			    Tcl_Obj *const objv[]);
+static int		TestexprparserObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TestexprstringCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestfileCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int		TestfilelinkCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
+static int		TestfeventCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestgetassocdataCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestgetintCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestgetplatformCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestgetvarfullnameCmd(
 			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		TestinterpdeleteCmd _ANSI_ARGS_((ClientData dummy,
-		            Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestlinkCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestlocaleCmd _ANSI_ARGS_((ClientData dummy,
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestinterpdeleteCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestlinkCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestlocaleCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestMathFunc _ANSI_ARGS_((ClientData clientData,
+			    Tcl_Obj *const objv[]);
+static int		TestMathFunc(ClientData clientData,
 			    Tcl_Interp *interp, Tcl_Value *args,
-			    Tcl_Value *resultPtr));
-static int		TestMathFunc2 _ANSI_ARGS_((ClientData clientData,
+			    Tcl_Value *resultPtr);
+static int		TestMathFunc2(ClientData clientData,
 			    Tcl_Interp *interp, Tcl_Value *args,
-			    Tcl_Value *resultPtr));
-static int		TestmainthreadCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestsetmainloopCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestexitmainloopCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static Tcl_Channel	PretendTclpOpenFileChannel _ANSI_ARGS_((
-			    Tcl_Interp *interp, CONST char *fileName,
-			    CONST char *modeString, int permissions));
-static Tcl_Channel	TestOpenFileChannelProc1 _ANSI_ARGS_((
-			    Tcl_Interp *interp, CONST char *fileName,
-			    CONST char *modeString, int permissions));
-static Tcl_Channel	TestOpenFileChannelProc2 _ANSI_ARGS_((
-			    Tcl_Interp *interp, CONST char *fileName,
-			    CONST char *modeString, int permissions));
-static Tcl_Channel	TestOpenFileChannelProc3 _ANSI_ARGS_((
-			    Tcl_Interp *interp, CONST char *fileName,
-			    CONST char *modeString, int permissions));
-static int		TestpanicCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestparserObjCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Value *resultPtr);
+static int		TestmainthreadCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestsetmainloopCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestexitmainloopCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestpanicCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestparserObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TestparsevarObjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestparsevarObjCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Obj *const objv[]);
+static int		TestparsevarnameObjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestparsevarnameObjCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Obj *const objv[]);
+static int		TestregexpObjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestregexpObjCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Obj *const objv[]);
+static int		TestreturnObjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static void		TestregexpXflags _ANSI_ARGS_((char *string,
-			    int length, int *cflagsPtr, int *eflagsPtr));
-static int		TestsaveresultCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Obj *const objv[]);
+static void		TestregexpXflags(char *string,
+			    int length, int *cflagsPtr, int *eflagsPtr);
+static int		TestsaveresultCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static void		TestsaveresultFree _ANSI_ARGS_((char *blockPtr));
-static int		TestsetassocdataCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestsetCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestseterrorcodeCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestsetobjerrorcodeCmd _ANSI_ARGS_((
+			    Tcl_Obj *const objv[]);
+static void		TestsaveresultFree(char *blockPtr);
+static int		TestsetassocdataCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestsetCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		Testset2Cmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestseterrorcodeCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestsetobjerrorcodeCmd(
 			    ClientData dummy, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		TestopenfilechannelprocCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp, int argc,
-			    CONST char **argv));
-static int		TestsetplatformCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TeststaticpkgCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		PretendTclpStat _ANSI_ARGS_((CONST char *path,
-			    Tcl_StatBuf *buf));
-static int		TestStatProc1 _ANSI_ARGS_((CONST char *path,
-			    Tcl_StatBuf *buf));
-static int		TestStatProc2 _ANSI_ARGS_((CONST char *path,
-			    Tcl_StatBuf *buf));
-static int		TestStatProc3 _ANSI_ARGS_((CONST char *path,
-			    Tcl_StatBuf *buf));
-static int		TeststatprocCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TesttranslatefilenameCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestupvarCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int              TestWrongNumArgsObjCmd _ANSI_ARGS_((
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestsetplatformCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TeststaticpkgCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TesttranslatefilenameCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestupvarCmd(ClientData dummy,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestWrongNumArgsObjCmd(
 			    ClientData clientData, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int              TestGetIndexFromObjStructObjCmd _ANSI_ARGS_((
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestGetIndexFromObjStructObjCmd(
 			    ClientData clientData, Tcl_Interp *interp,
-			    int objc, Tcl_Obj *CONST objv[]));
-static int		TestChannelCmd _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-static int		TestChannelEventCmd _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp, int argc, CONST char **argv));
-/* Filesystem testing */
-
-static int		TestFilesystemObjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc, 
-			    Tcl_Obj *CONST objv[]));
-static int		TestSimpleFilesystemObjCmd _ANSI_ARGS_((
-			    ClientData dummy, Tcl_Interp *interp, int objc, 
-			    Tcl_Obj *CONST objv[]));
-
-static void             TestReport _ANSI_ARGS_ ((CONST char* cmd, Tcl_Obj* arg1, 
-			    Tcl_Obj* arg2));
-
-static Tcl_Obj*         TestReportGetNativePath _ANSI_ARGS_ ((
-			    Tcl_Obj* pathObjPtr));
-
-static int		TestReportStat _ANSI_ARGS_ ((Tcl_Obj *path,
-			    Tcl_StatBuf *buf));
-static int		TestReportAccess _ANSI_ARGS_ ((Tcl_Obj *path,
-			    int mode));
-static Tcl_Channel	TestReportOpenFileChannel _ANSI_ARGS_ ((
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestChannelCmd(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestChannelEventCmd(ClientData clientData,
+			    Tcl_Interp *interp, int argc, const char **argv);
+static int		TestFilesystemObjCmd(ClientData dummy,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TestSimpleFilesystemObjCmd(
+			    ClientData dummy, Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static void		TestReport(const char *cmd, Tcl_Obj *arg1,
+			    Tcl_Obj *arg2);
+static Tcl_Obj *	TestReportGetNativePath(Tcl_Obj *pathPtr);
+static int		TestReportStat(Tcl_Obj *path, Tcl_StatBuf *buf);
+static int		TestReportAccess(Tcl_Obj *path, int mode);
+static Tcl_Channel	TestReportOpenFileChannel(
 			    Tcl_Interp *interp, Tcl_Obj *fileName,
-			    int mode, int permissions));
-static int		TestReportMatchInDirectory _ANSI_ARGS_ ((
+			    int mode, int permissions);
+static int		TestReportMatchInDirectory(Tcl_Interp *interp,
+			    Tcl_Obj *resultPtr, Tcl_Obj *dirPtr,
+			    const char *pattern, Tcl_GlobTypeData *types);
+static int		TestReportChdir(Tcl_Obj *dirName);
+static int		TestReportLstat(Tcl_Obj *path, Tcl_StatBuf *buf);
+static int		TestReportCopyFile(Tcl_Obj *src, Tcl_Obj *dst);
+static int		TestReportDeleteFile(Tcl_Obj *path);
+static int		TestReportRenameFile(Tcl_Obj *src, Tcl_Obj *dst);
+static int		TestReportCreateDirectory(Tcl_Obj *path);
+static int		TestReportCopyDirectory(Tcl_Obj *src,
+			    Tcl_Obj *dst, Tcl_Obj **errorPtr);
+static int		TestReportRemoveDirectory(Tcl_Obj *path,
+			    int recursive, Tcl_Obj **errorPtr);
+static int		TestReportLoadFile(Tcl_Interp *interp,
+			    Tcl_Obj *fileName, Tcl_LoadHandle *handlePtr,
+			    Tcl_FSUnloadFileProc **unloadProcPtr);
+static Tcl_Obj *	TestReportLink(Tcl_Obj *path,
+			    Tcl_Obj *to, int linkType);
+static const char **	TestReportFileAttrStrings(
+			    Tcl_Obj *fileName, Tcl_Obj **objPtrRef);
+static int		TestReportFileAttrsGet(Tcl_Interp *interp,
+			    int index, Tcl_Obj *fileName, Tcl_Obj **objPtrRef);
+static int		TestReportFileAttrsSet(Tcl_Interp *interp,
+			    int index, Tcl_Obj *fileName, Tcl_Obj *objPtr);
+static int		TestReportUtime(Tcl_Obj *fileName,
+			    struct utimbuf *tval);
+static int		TestReportNormalizePath(Tcl_Interp *interp,
+			    Tcl_Obj *pathPtr, int nextCheckpoint);
+static int		TestReportInFilesystem(Tcl_Obj *pathPtr, ClientData *clientDataPtr);
+static void		TestReportFreeInternalRep(ClientData clientData);
+static ClientData	TestReportDupInternalRep(ClientData clientData);
+
+static int		SimpleStat(Tcl_Obj *path, Tcl_StatBuf *buf);
+static int		SimpleAccess(Tcl_Obj *path, int mode);
+static Tcl_Channel	SimpleOpenFileChannel(Tcl_Interp *interp,
+			    Tcl_Obj *fileName, int mode, int permissions);
+static Tcl_Obj *	SimpleListVolumes(void);
+static int		SimplePathInFilesystem(
+			    Tcl_Obj *pathPtr, ClientData *clientDataPtr);
+static Tcl_Obj *	SimpleRedirect(Tcl_Obj *pathPtr);
+static int		SimpleMatchInDirectory(
 			    Tcl_Interp *interp, Tcl_Obj *resultPtr,
-			    Tcl_Obj *dirPtr, CONST char *pattern,
-			    Tcl_GlobTypeData *types));
-static int		TestReportChdir _ANSI_ARGS_ ((Tcl_Obj *dirName));
-static int		TestReportLstat _ANSI_ARGS_ ((Tcl_Obj *path,
-			    Tcl_StatBuf *buf));
-static int		TestReportCopyFile _ANSI_ARGS_ ((Tcl_Obj *src,
-			    Tcl_Obj *dst));
-static int		TestReportDeleteFile _ANSI_ARGS_ ((Tcl_Obj *path));
-static int		TestReportRenameFile _ANSI_ARGS_ ((Tcl_Obj *src,
-			    Tcl_Obj *dst));
-static int		TestReportCreateDirectory _ANSI_ARGS_ ((Tcl_Obj *path));
-static int		TestReportCopyDirectory _ANSI_ARGS_ ((Tcl_Obj *src,
-			    Tcl_Obj *dst, Tcl_Obj **errorPtr));
-static int		TestReportRemoveDirectory _ANSI_ARGS_ ((Tcl_Obj *path,
-			    int recursive, Tcl_Obj **errorPtr));
-static int		TestReportLoadFile _ANSI_ARGS_ ((Tcl_Interp *interp,
-			    Tcl_Obj *fileName, 
-			    Tcl_LoadHandle *handlePtr,
-			    Tcl_FSUnloadFileProc **unloadProcPtr));
-static Tcl_Obj *	TestReportLink _ANSI_ARGS_ ((Tcl_Obj *path,
-			    Tcl_Obj *to, int linkType));
-static CONST char**	TestReportFileAttrStrings _ANSI_ARGS_ ((
-			    Tcl_Obj *fileName, Tcl_Obj **objPtrRef));
-static int		TestReportFileAttrsGet _ANSI_ARGS_ ((Tcl_Interp *interp,
-			    int index, Tcl_Obj *fileName, Tcl_Obj **objPtrRef));
-static int		TestReportFileAttrsSet _ANSI_ARGS_ ((Tcl_Interp *interp,
-			    int index, Tcl_Obj *fileName, Tcl_Obj *objPtr));
-static int		TestReportUtime _ANSI_ARGS_ ((Tcl_Obj *fileName,
-			    struct utimbuf *tval));
-static int		TestReportNormalizePath _ANSI_ARGS_ ((
-			    Tcl_Interp *interp, Tcl_Obj *pathPtr,
-			    int nextCheckpoint));
-static int		TestReportInFilesystem _ANSI_ARGS_ ((Tcl_Obj *pathPtr, ClientData *clientDataPtr));
-static void		TestReportFreeInternalRep _ANSI_ARGS_ ((ClientData clientData));
-static ClientData	TestReportDupInternalRep _ANSI_ARGS_ ((ClientData clientData));
-
-static int		SimpleStat _ANSI_ARGS_ ((Tcl_Obj *path,
-			    Tcl_StatBuf *buf));
-static int		SimpleAccess _ANSI_ARGS_ ((Tcl_Obj *path,
-			    int mode));
-static Tcl_Channel	SimpleOpenFileChannel _ANSI_ARGS_ ((
-			    Tcl_Interp *interp, Tcl_Obj *fileName,
-			    int mode, int permissions));
-static Tcl_Obj*         SimpleListVolumes _ANSI_ARGS_ ((void));
-static int              SimplePathInFilesystem _ANSI_ARGS_ ((
-			    Tcl_Obj *pathPtr, ClientData *clientDataPtr));
-static Tcl_Obj*         SimpleCopy _ANSI_ARGS_ ((Tcl_Obj *pathPtr));
-static int              TestNumUtfCharsCmd _ANSI_ARGS_((ClientData clientData,
-                            Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
+			    Tcl_Obj *dirPtr, const char *pattern,
+			    Tcl_GlobTypeData *types);
+static int		TestNumUtfCharsCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+static int		TestHashSystemHashCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
 #if defined(HAVE_CPUID) || defined(__WIN32__)
-static int	TestcpuidCmd _ANSI_ARGS_(( ClientData dummy,
-					      Tcl_Interp* interp,
-					      int objc,
-					      Tcl_Obj *CONST objv[] ));
+static int		TestcpuidCmd (ClientData dummy,
+			    Tcl_Interp* interp, int objc,
+			    Tcl_Obj *CONST objv[]);
 #endif
 
 static Tcl_Filesystem testReportingFilesystem = {
@@ -462,11 +468,11 @@ static Tcl_Filesystem testReportingFilesystem = {
     &TestReportFileAttrsGet,
     &TestReportFileAttrsSet,
     &TestReportCreateDirectory,
-    &TestReportRemoveDirectory, 
+    &TestReportRemoveDirectory,
     &TestReportDeleteFile,
     &TestReportCopyFile,
     &TestReportRenameFile,
-    &TestReportCopyDirectory, 
+    &TestReportCopyDirectory,
     &TestReportLstat,
     (Tcl_FSLoadFileProc *) &TestReportLoadFile,
     NULL /* cwd */,
@@ -494,7 +500,7 @@ static Tcl_Filesystem simpleFilesystem = {
     &SimpleStat,
     &SimpleAccess,
     &SimpleOpenFileChannel,
-    NULL,
+    &SimpleMatchInDirectory,
     NULL,
     /* We choose not to support symbolic links inside our vfs's */
     NULL,
@@ -503,14 +509,14 @@ static Tcl_Filesystem simpleFilesystem = {
     NULL,
     NULL,
     NULL,
-    NULL, 
+    NULL,
     NULL,
     /* No copy file - fallback will occur at Tcl level */
     NULL,
     /* No rename file - fallback will occur at Tcl level */
     NULL,
     /* No copy directory - fallback will occur at Tcl level */
-    NULL, 
+    NULL,
     /* Use stat for lstat */
     NULL,
     /* No load - fallback on core implementation */
@@ -523,25 +529,25 @@ static Tcl_Filesystem simpleFilesystem = {
 
 /*
  * External (platform specific) initialization routine, these declarations
- * explicitly don't use EXTERN since this code does not get compiled
- * into the library:
+ * explicitly don't use EXTERN since this code does not get compiled into the
+ * library:
  */
 
-extern int		TclplatformtestInit _ANSI_ARGS_((Tcl_Interp *interp));
-extern int		TclThread_Init _ANSI_ARGS_((Tcl_Interp *interp));
+extern int		TclplatformtestInit(Tcl_Interp *interp);
+extern int		TclThread_Init(Tcl_Interp *interp);
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcltest_Init --
  *
- *	This procedure performs application-specific initialization.
- *	Most applications, especially those that incorporate additional
- *	packages, will have their own version of this procedure.
+ *	This procedure performs application-specific initialization. Most
+ *	applications, especially those that incorporate additional packages,
+ *	will have their own version of this procedure.
  *
  * Results:
- *	Returns a standard Tcl completion code, and leaves an error
- *	message in the interp's result if an error occurs.
+ *	Returns a standard Tcl completion code, and leaves an error message in
+ *	the interp's result if an error occurs.
  *
  * Side effects:
  *	Depends on the startup script.
@@ -550,162 +556,160 @@ extern int		TclThread_Init _ANSI_ARGS_((Tcl_Interp *interp));
  */
 
 int
-Tcltest_Init(interp)
-    Tcl_Interp *interp;		/* Interpreter for application. */
+Tcltest_Init(
+    Tcl_Interp *interp)		/* Interpreter for application. */
 {
     Tcl_ValueType t3ArgTypes[2];
 
     Tcl_Obj *listPtr;
     Tcl_Obj **objv;
     int objc, index;
-    static CONST char *specialOptions[] = {
+    static const char *specialOptions[] = {
 	"-appinitprocerror", "-appinitprocdeleteinterp",
-	"-appinitprocclosestderr", "-appinitprocsetrcfile", (char *) NULL
+	"-appinitprocclosestderr", "-appinitprocsetrcfile", NULL
     };
 
-#ifndef TCL_TIP268
-    if (Tcl_PkgProvide(interp, "Tcltest", TCL_VERSION) == TCL_ERROR) {
-#else
     /* TIP #268: Full patchlevel instead of just major.minor */
+
     if (Tcl_PkgProvide(interp, "Tcltest", TCL_PATCH_LEVEL) == TCL_ERROR) {
-#endif
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
      * Create additional commands and math functions for testing Tcl.
      */
 
-    Tcl_CreateCommand(interp, "gettimes", GetTimesCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "noop", NoopCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "noop", NoopObjCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+    Tcl_CreateCommand(interp, "gettimes", GetTimesCmd, (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "noop", NoopCmd, (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "noop", NoopObjCmd, (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testwrongnumargs", TestWrongNumArgsObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "testfilesystem", TestFilesystemObjCmd, 
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "testsimplefilesystem", TestSimpleFilesystemObjCmd, 
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testfilesystem", TestFilesystemObjCmd,
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testsimplefilesystem", TestSimpleFilesystemObjCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testgetindexfromobjstruct",
-			 TestGetIndexFromObjStructObjCmd, (ClientData) 0,
-			 (Tcl_CmdDeleteProc *) NULL);
+	    TestGetIndexFromObjStructObjCmd, (ClientData) 0, NULL);
+#ifdef USE_OBSOLETE_FS_HOOKS
     Tcl_CreateCommand(interp, "testaccessproc", TestaccessprocCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testasync", TestasyncCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
+    Tcl_CreateCommand(interp, "testopenfilechannelproc",
+    	    TestopenfilechannelprocCmd, (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "teststatproc", TeststatprocCmd, (ClientData) 0,
+	    NULL);
+#endif
+    Tcl_CreateCommand(interp, "testasync", TestasyncCmd, (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testchannel", TestChannelCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testchannelevent", TestChannelEventCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testcmdtoken", TestcmdtokenCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
     Tcl_CreateCommand(interp, "testcmdinfo", TestcmdinfoCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
     Tcl_CreateCommand(interp, "testcmdtrace", TestcmdtraceCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testconcatobj", TestconcatobjCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testcreatecommand", TestcreatecommandCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testdcall", TestdcallCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testdel", TestdelCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testdcall", TestdcallCmd, (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testdel", TestdelCmd, (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testdelassocdata", TestdelassocdataCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testdoubledigits", TestdoubledigitsObjCmd,
+			 NULL, NULL);
     Tcl_DStringInit(&dstring);
     Tcl_CreateCommand(interp, "testdstring", TestdstringCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
     Tcl_CreateObjCommand(interp, "testencoding", TestencodingObjCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
     Tcl_CreateObjCommand(interp, "testevalex", TestevalexObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testevalobjv", TestevalobjvObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand( interp, "testevent", TesteventObjCmd,
-			  (ClientData) 0, (Tcl_CmdDeleteProc*) NULL );
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testevent", TesteventObjCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testexithandler", TestexithandlerCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testexprlong", TestexprlongCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testexprlongobj", TestexprlongobjCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testexprdouble", TestexprdoubleCmd,
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testexprdoubleobj", TestexprdoubleobjCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testexprparser", TestexprparserObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testexprstring", TestexprstringCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testfevent", TestfeventCmd, (ClientData) 0,
-            (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "testfilelink", TestfilelinkCmd, 
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
+    Tcl_CreateObjCommand(interp, "testfilelink", TestfilelinkCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testfile", TestfileCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testhashsystemhash",
+	    TestHashSystemHashCmd, (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testgetassocdata", TestgetassocdataCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testgetint", TestgetintCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testgetplatform", TestgetplatformCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testgetvarfullname",
-	    TestgetvarfullnameCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    TestgetvarfullnameCmd, (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testinterpdelete", TestinterpdeleteCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testlink", TestlinkCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testlink", TestlinkCmd, (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testlocale", TestlocaleCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testopenfilechannelproc",
-    	    TestopenfilechannelprocCmd, (ClientData) 0, 
-    	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testpanic", TestpanicCmd, (ClientData) 0,
-            (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
+    Tcl_CreateCommand(interp, "testpanic", TestpanicCmd, (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testparser", TestparserObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testparsevar", TestparsevarObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testparsevarname", TestparsevarnameObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testregexp", TestregexpObjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testreturn", TestreturnObjCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testsaveresult", TestsaveresultCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testsetassocdata", TestsetassocdataCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testsetnoerr", TestsetCmd,
-            (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testseterr", TestsetCmd,
-            (ClientData) TCL_LEAVE_ERR_MSG, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) TCL_LEAVE_ERR_MSG, NULL);
+    Tcl_CreateCommand(interp, "testset2", Testset2Cmd,
+	    (ClientData) TCL_LEAVE_ERR_MSG, NULL);
     Tcl_CreateCommand(interp, "testseterrorcode", TestseterrorcodeCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "testsetobjerrorcode", 
-	    TestsetobjerrorcodeCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testsetobjerrorcode",
+	    TestsetobjerrorcodeCmd, (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testnumutfchars",
-	    TestNumUtfCharsCmd, (ClientData) 0, 
-	    (Tcl_CmdDeleteProc *) NULL);
+	    TestNumUtfCharsCmd, (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testsetplatform", TestsetplatformCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "teststaticpkg", TeststaticpkgCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateCommand(interp, "testtranslatefilename",
-            TesttranslatefilenameCmd, (ClientData) 0,
-            (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateCommand(interp, "testupvar", TestupvarCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateMathFunc(interp, "T1", 0, (Tcl_ValueType *) NULL, TestMathFunc,
-	    (ClientData) 123);
-    Tcl_CreateMathFunc(interp, "T2", 0, (Tcl_ValueType *) NULL, TestMathFunc,
-	    (ClientData) 345);
-    Tcl_CreateCommand(interp, "teststatproc", TeststatprocCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    TesttranslatefilenameCmd, (ClientData) 0, NULL);
+    Tcl_CreateCommand(interp, "testupvar", TestupvarCmd, (ClientData) 0, NULL);
+    Tcl_CreateMathFunc(interp, "T1", 0, NULL, TestMathFunc, (ClientData) 123);
+    Tcl_CreateMathFunc(interp, "T2", 0, NULL, TestMathFunc, (ClientData) 345);
     Tcl_CreateCommand(interp, "testmainthread", TestmainthreadCmd, (ClientData) 0,
-	    (Tcl_CmdDeleteProc *) NULL);
+	    NULL);
     Tcl_CreateCommand(interp, "testsetmainloop", TestsetmainloopCmd,
-	    (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) NULL, NULL);
     Tcl_CreateCommand(interp, "testexitmainloop", TestexitmainloopCmd,
-	    (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) NULL, NULL);
 #if defined(HAVE_CPUID) || defined(__WIN32__)
     Tcl_CreateObjCommand(interp, "testcpuid", TestcpuidCmd,
-			 (ClientData) 0, (Tcl_CmdDeleteProc*) NULL );
+	    (ClientData) 0, NULL);
 #endif
     t3ArgTypes[0] = TCL_EITHER;
     t3ArgTypes[1] = TCL_EITHER;
@@ -724,40 +728,37 @@ Tcltest_Init(interp)
 
     listPtr = Tcl_GetVar2Ex(interp, "argv", NULL, TCL_GLOBAL_ONLY);
     if (listPtr != NULL) {
-        if (Tcl_ListObjGetElements(interp, listPtr, &objc, &objv) != TCL_OK) {
+	if (Tcl_ListObjGetElements(interp, listPtr, &objc, &objv) != TCL_OK) {
 	    return TCL_ERROR;
-        }
-        if (objc && (Tcl_GetIndexFromObj(NULL, objv[0], specialOptions, NULL,
+	}
+	if (objc && (Tcl_GetIndexFromObj(NULL, objv[0], specialOptions, NULL,
 		TCL_EXACT, &index) == TCL_OK)) {
 	    switch (index) {
-	        case 0: {
-		    return TCL_ERROR;
-	        }
-	        case 1: {
-		    Tcl_DeleteInterp(interp);
-		    return TCL_ERROR;
-	        }
-	        case 2: {
-		    int mode;
-		    Tcl_UnregisterChannel(interp, 
-			    Tcl_GetChannel(interp, "stderr", &mode));
-		    return TCL_ERROR;
-	        }
-	        case 3: {
-		    if (objc-1) {
-		        Tcl_SetVar2Ex(interp, "tcl_rcFileName", NULL,
-			       objv[1], TCL_GLOBAL_ONLY);
-		    }
-		    return TCL_ERROR;
-	        }
+	    case 0:
+		return TCL_ERROR;
+	    case 1:
+		Tcl_DeleteInterp(interp);
+		return TCL_ERROR;
+	    case 2: {
+		int mode;
+		Tcl_UnregisterChannel(interp,
+			Tcl_GetChannel(interp, "stderr", &mode));
+		return TCL_ERROR;
 	    }
-        }
+	    case 3:
+		if (objc-1) {
+		    Tcl_SetVar2Ex(interp, "tcl_rcFileName", NULL, objv[1],
+			    TCL_GLOBAL_ONLY);
+		}
+		return TCL_ERROR;
+	    }
+	}
     }
-	
+
     /*
      * And finally add any platform specific test commands.
      */
-    
+
     return TclplatformtestInit(interp);
 }
 
@@ -780,11 +781,11 @@ Tcltest_Init(interp)
 
 	/* ARGSUSED */
 static int
-TestasyncCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestasyncCmd(
+    ClientData dummy,			/* Not used. */
+    Tcl_Interp *interp,			/* Current interpreter. */
+    int argc,				/* Number of arguments. */
+    const char **argv)			/* Argument strings. */
 {
     TestAsyncHandler *asyncPtr, *prevPtr;
     int id, code;
@@ -801,21 +802,21 @@ TestasyncCmd(dummy, interp, argc, argv)
 	    goto wrongNumArgs;
 	}
 	asyncPtr = (TestAsyncHandler *) ckalloc(sizeof(TestAsyncHandler));
-	asyncPtr->command = (char *) ckalloc((unsigned) (strlen(argv[2]) + 1));
+	asyncPtr->command = ckalloc(strlen(argv[2]) + 1);
 	strcpy(asyncPtr->command, argv[2]);
-	Tcl_MutexLock(&asyncTestMutex);
+        Tcl_MutexLock(&asyncTestMutex);
 	asyncPtr->id = nextId;
 	nextId++;
 	asyncPtr->handler = Tcl_AsyncCreate(AsyncHandlerProc,
-		(ClientData) asyncPtr->id);
+                                            INT2PTR(asyncPtr->id));
 	asyncPtr->nextPtr = firstHandler;
 	firstHandler = asyncPtr;
+        Tcl_MutexUnlock(&asyncTestMutex);
 	TclFormatInt(buf, asyncPtr->id);
-	Tcl_MutexUnlock(&asyncTestMutex);
 	Tcl_SetResult(interp, buf, TCL_VOLATILE);
     } else if (strcmp(argv[1], "delete") == 0) {
 	if (argc == 2) {
-	    Tcl_MutexLock(&asyncTestMutex);
+            Tcl_MutexLock(&asyncTestMutex);
 	    while (firstHandler != NULL) {
 		asyncPtr = firstHandler;
 		firstHandler = asyncPtr->nextPtr;
@@ -823,7 +824,7 @@ TestasyncCmd(dummy, interp, argc, argv)
 		ckfree(asyncPtr->command);
 		ckfree((char *) asyncPtr);
 	    }
-	    Tcl_MutexUnlock(&asyncTestMutex);
+            Tcl_MutexUnlock(&asyncTestMutex);
 	    return TCL_OK;
 	}
 	if (argc != 3) {
@@ -832,7 +833,7 @@ TestasyncCmd(dummy, interp, argc, argv)
 	if (Tcl_GetInt(interp, argv[2], &id) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-	Tcl_MutexLock(&asyncTestMutex);
+        Tcl_MutexLock(&asyncTestMutex);
 	for (prevPtr = NULL, asyncPtr = firstHandler; asyncPtr != NULL;
 		prevPtr = asyncPtr, asyncPtr = asyncPtr->nextPtr) {
 	    if (asyncPtr->id != id) {
@@ -848,7 +849,7 @@ TestasyncCmd(dummy, interp, argc, argv)
 	    ckfree((char *) asyncPtr);
 	    break;
 	}
-	Tcl_MutexUnlock(&asyncTestMutex);
+        Tcl_MutexUnlock(&asyncTestMutex);
     } else if (strcmp(argv[1], "mark") == 0) {
 	if (argc != 5) {
 	    goto wrongNumArgs;
@@ -857,7 +858,7 @@ TestasyncCmd(dummy, interp, argc, argv)
 		|| (Tcl_GetInt(interp, argv[4], &code) != TCL_OK)) {
 	    return TCL_ERROR;
 	}
-	Tcl_MutexLock(&asyncTestMutex);
+        Tcl_MutexLock(&asyncTestMutex);
 	for (asyncPtr = firstHandler; asyncPtr != NULL;
 		asyncPtr = asyncPtr->nextPtr) {
 	    if (asyncPtr->id == id) {
@@ -865,29 +866,58 @@ TestasyncCmd(dummy, interp, argc, argv)
 		break;
 	    }
 	}
-	Tcl_MutexUnlock(&asyncTestMutex);
+        Tcl_MutexUnlock(&asyncTestMutex);
 	Tcl_SetResult(interp, (char *)argv[3], TCL_VOLATILE);
 	return code;
+#ifdef TCL_THREADS
+    } else if (strcmp(argv[1], "marklater") == 0) {
+	if (argc != 3) {
+	    goto wrongNumArgs;
+	}
+	if (Tcl_GetInt(interp, argv[2], &id) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+        Tcl_MutexLock(&asyncTestMutex);
+	for (asyncPtr = firstHandler; asyncPtr != NULL;
+		asyncPtr = asyncPtr->nextPtr) {
+	    if (asyncPtr->id == id) {
+		Tcl_ThreadId threadID;
+		if (Tcl_CreateThread(&threadID, AsyncThreadProc,
+			(ClientData) INT2PTR(id), TCL_THREAD_STACK_DEFAULT,
+			TCL_THREAD_NOFLAGS) != TCL_OK) {
+		    Tcl_SetResult(interp, "can't create thread", TCL_STATIC);
+		    Tcl_MutexUnlock(&asyncTestMutex);
+		    return TCL_ERROR;
+		}
+		break;
+	    }
+	}
+        Tcl_MutexUnlock(&asyncTestMutex);
+    } else {
+	Tcl_AppendResult(interp, "bad option \"", argv[1],
+		"\": must be create, delete, int, mark, or marklater", NULL);
+	return TCL_ERROR;
+#else /* !TCL_THREADS */
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": must be create, delete, int, or mark",
-		(char *) NULL);
+		"\": must be create, delete, int, or mark", NULL);
 	return TCL_ERROR;
+#endif
     }
     return TCL_OK;
 }
 
 static int
-AsyncHandlerProc(clientData, interp, code)
-    ClientData clientData;	/* Id of TestAsyncHandler structure. 
+AsyncHandlerProc(
+    ClientData clientData,	/* If of TestAsyncHandler structure. 
                                  * in global list. */
-    Tcl_Interp *interp;		/* Interpreter in which command was
+    Tcl_Interp *interp,		/* Interpreter in which command was
 				 * executed, or NULL. */
-    int code;			/* Current return code from command. */
+    int code)			/* Current return code from command. */
 {
     TestAsyncHandler *asyncPtr;
-    int id = (int)clientData;
-    CONST char *listArgv[4], *cmd;
+    int id = PTR2INT(clientData);
+    const char *listArgv[4], *cmd;
     char string[TCL_INTEGER_SPACE];
 
     Tcl_MutexLock(&asyncTestMutex);
@@ -912,9 +942,8 @@ AsyncHandlerProc(clientData, interp, code)
 	code = Tcl_Eval(interp, cmd);
     } else {
 	/*
-	 * this should not happen, but by definition of how async
-	 * handlers are invoked, it's possible.  Better error
-	 * checking is needed here.
+	 * this should not happen, but by definition of how async handlers are
+	 * invoked, it's possible.  Better error checking is needed here.
 	 */
     }
     ckfree((char *)cmd);
@@ -924,11 +953,51 @@ AsyncHandlerProc(clientData, interp, code)
 /*
  *----------------------------------------------------------------------
  *
+ * AsyncThreadProc --
+ *
+ *	Delivers an asynchronous event to a handler in another thread.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Invokes Tcl_AsyncMark on the handler
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef TCL_THREADS
+static Tcl_ThreadCreateType
+AsyncThreadProc(
+    ClientData clientData)	/* Parameter is the id of a
+				 * TestAsyncHandler, defined above. */
+{
+    TestAsyncHandler *asyncPtr;
+    int id = PTR2INT(clientData);
+
+    Tcl_Sleep(1);
+    Tcl_MutexLock(&asyncTestMutex);
+    for (asyncPtr = firstHandler; asyncPtr != NULL;
+         asyncPtr = asyncPtr->nextPtr) {
+        if (asyncPtr->id == id) {
+            Tcl_AsyncMark(asyncPtr->handler);
+            break;
+        }
+    }
+    Tcl_MutexUnlock(&asyncTestMutex);
+    Tcl_ExitThread(TCL_OK);
+    TCL_THREAD_CREATE_RETURN;
+}
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TestcmdinfoCmd --
  *
- *	This procedure implements the "testcmdinfo" command.  It is used
- *	to test Tcl_GetCommandInfo, Tcl_SetCommandInfo, and command creation
- *	and deletion.
+ *	This procedure implements the "testcmdinfo" command.  It is used to
+ *	test Tcl_GetCommandInfo, Tcl_SetCommandInfo, and command creation and
+ *	deletion.
  *
  * Results:
  *	A standard Tcl result.
@@ -941,17 +1010,17 @@ AsyncHandlerProc(clientData, interp, code)
 
 	/* ARGSUSED */
 static int
-TestcmdinfoCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestcmdinfoCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_CmdInfo info;
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" option cmdName\"", (char *) NULL);
+		" option cmdName\"", NULL);
 	return TCL_ERROR;
     }
     if (strcmp(argv[1], "create") == 0) {
@@ -968,34 +1037,33 @@ TestcmdinfoCmd(dummy, interp, argc, argv)
 	}
 	if (info.proc == CmdProc1) {
 	    Tcl_AppendResult(interp, "CmdProc1", " ",
-		    (char *) info.clientData, (char *) NULL);
+		    (char *) info.clientData, NULL);
 	} else if (info.proc == CmdProc2) {
 	    Tcl_AppendResult(interp, "CmdProc2", " ",
-		    (char *) info.clientData, (char *) NULL);
+		    (char *) info.clientData, NULL);
 	} else {
-	    Tcl_AppendResult(interp, "unknown", (char *) NULL);
+	    Tcl_AppendResult(interp, "unknown", NULL);
 	}
 	if (info.deleteProc == CmdDelProc1) {
 	    Tcl_AppendResult(interp, " CmdDelProc1", " ",
-		    (char *) info.deleteData, (char *) NULL);
+		    (char *) info.deleteData, NULL);
 	} else if (info.deleteProc == CmdDelProc2) {
 	    Tcl_AppendResult(interp, " CmdDelProc2", " ",
-		    (char *) info.deleteData, (char *) NULL);
+		    (char *) info.deleteData, NULL);
 	} else {
-	    Tcl_AppendResult(interp, " unknown", (char *) NULL);
+	    Tcl_AppendResult(interp, " unknown", NULL);
 	}
-	Tcl_AppendResult(interp, " ", info.namespacePtr->fullName,
-	        (char *) NULL);
+	Tcl_AppendResult(interp, " ", info.namespacePtr->fullName, NULL);
 	if (info.isNativeObjectProc) {
-	    Tcl_AppendResult(interp, " nativeObjectProc", (char *) NULL);
+	    Tcl_AppendResult(interp, " nativeObjectProc", NULL);
 	} else {
-	    Tcl_AppendResult(interp, " stringProc", (char *) NULL);
+	    Tcl_AppendResult(interp, " stringProc", NULL);
 	}
     } else if (strcmp(argv[1], "modify") == 0) {
 	info.proc = CmdProc2;
 	info.clientData = (ClientData) "new_command_data";
 	info.objProc = NULL;
-        info.objClientData = (ClientData) NULL;
+	info.objClientData = (ClientData) NULL;
 	info.deleteProc = CmdDelProc2;
 	info.deleteData = (ClientData) "new_delete_data";
 	if (Tcl_SetCommandInfo(interp, argv[2], &info) == 0) {
@@ -1005,8 +1073,7 @@ TestcmdinfoCmd(dummy, interp, argc, argv)
 	}
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": must be create, delete, get, or modify",
-		(char *) NULL);
+		"\": must be create, delete, get, or modify", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -1014,33 +1081,31 @@ TestcmdinfoCmd(dummy, interp, argc, argv)
 
 	/*ARGSUSED*/
 static int
-CmdProc1(clientData, interp, argc, argv)
-    ClientData clientData;		/* String to return. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
-{
-    Tcl_AppendResult(interp, "CmdProc1 ", (char *) clientData,
-	    (char *) NULL);
+CmdProc1(
+    ClientData clientData,	/* String to return. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    Tcl_AppendResult(interp, "CmdProc1 ", (char *) clientData, NULL);
     return TCL_OK;
 }
 
 	/*ARGSUSED*/
 static int
-CmdProc2(clientData, interp, argc, argv)
-    ClientData clientData;		/* String to return. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
-{
-    Tcl_AppendResult(interp, "CmdProc2 ", (char *) clientData,
-	    (char *) NULL);
+CmdProc2(
+    ClientData clientData,	/* String to return. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    Tcl_AppendResult(interp, "CmdProc2 ", (char *) clientData, NULL);
     return TCL_OK;
 }
 
 static void
-CmdDelProc1(clientData)
-    ClientData clientData;		/* String to save. */
+CmdDelProc1(
+    ClientData clientData)	/* String to save. */
 {
     Tcl_DStringInit(&delString);
     Tcl_DStringAppend(&delString, "CmdDelProc1 ", -1);
@@ -1048,8 +1113,8 @@ CmdDelProc1(clientData)
 }
 
 static void
-CmdDelProc2(clientData)
-    ClientData clientData;		/* String to save. */
+CmdDelProc2(
+    ClientData clientData)	/* String to save. */
 {
     Tcl_DStringInit(&delString);
     Tcl_DStringAppend(&delString, "CmdDelProc2 ", -1);
@@ -1061,9 +1126,8 @@ CmdDelProc2(clientData)
  *
  * TestcmdtokenCmd --
  *
- *	This procedure implements the "testcmdtoken" command. It is used
- *	to test Tcl_Command tokens and procedures such as
- *	Tcl_GetCommandFullName.
+ *	This procedure implements the "testcmdtoken" command. It is used to
+ *	test Tcl_Command tokens and procedures such as Tcl_GetCommandFullName.
  *
  * Results:
  *	A standard Tcl result.
@@ -1076,11 +1140,11 @@ CmdDelProc2(clientData)
 
 	/* ARGSUSED */
 static int
-TestcmdtokenCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestcmdtokenCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_Command token;
     int *l;
@@ -1088,20 +1152,20 @@ TestcmdtokenCmd(dummy, interp, argc, argv)
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" option arg\"", (char *) NULL);
+		" option arg\"", NULL);
 	return TCL_ERROR;
     }
     if (strcmp(argv[1], "create") == 0) {
 	token = Tcl_CreateCommand(interp, argv[2], CmdProc1,
-		(ClientData) "original", (Tcl_CmdDeleteProc *) NULL);
-	sprintf(buf, "%p", (VOID *)token);
+		(ClientData) "original", NULL);
+	sprintf(buf, "%p", (void *)token);
 	Tcl_SetResult(interp, buf, TCL_VOLATILE);
     } else if (strcmp(argv[1], "name") == 0) {
 	Tcl_Obj *objPtr;
 
 	if (sscanf(argv[2], "%p", &l) != 1) {
 	    Tcl_AppendResult(interp, "bad command token \"", argv[2],
-		    "\"", (char *) NULL);
+		    "\"", NULL);
 	    return TCL_ERROR;
 	}
 
@@ -1109,12 +1173,12 @@ TestcmdtokenCmd(dummy, interp, argc, argv)
 	Tcl_GetCommandFullName(interp, (Tcl_Command) l, objPtr);
 
 	Tcl_AppendElement(interp,
-	        Tcl_GetCommandName(interp, (Tcl_Command) l));
+		Tcl_GetCommandName(interp, (Tcl_Command) l));
 	Tcl_AppendElement(interp, Tcl_GetString(objPtr));
 	Tcl_DecrRefCount(objPtr);
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": must be create or name", (char *) NULL);
+		"\": must be create or name", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -1140,25 +1204,25 @@ TestcmdtokenCmd(dummy, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestcmdtraceCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestcmdtraceCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_DString buffer;
     int result;
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" option script\"", (char *) NULL);
+		" option script\"", NULL);
 	return TCL_ERROR;
     }
 
     if (strcmp(argv[1], "tracetest") == 0) {
 	Tcl_DStringInit(&buffer);
 	cmdTrace = Tcl_CreateTrace(interp, 50000,
-	        (Tcl_CmdTraceProc *) CmdTraceProc, (ClientData) &buffer);
+		(Tcl_CmdTraceProc *) CmdTraceProc, (ClientData) &buffer);
 	result = Tcl_Eval(interp, argv[2]);
 	if (result == TCL_OK) {
 	    Tcl_ResetResult(interp);
@@ -1169,13 +1233,13 @@ TestcmdtraceCmd(dummy, interp, argc, argv)
     } else if (strcmp(argv[1], "deletetest") == 0) {
 	/*
 	 * Create a command trace then eval a script to check whether it is
-	 * called. Note that this trace procedure removes itself as a
-	 * further check of the robustness of the trace proc calling code in
+	 * called. Note that this trace procedure removes itself as a further
+	 * check of the robustness of the trace proc calling code in
 	 * TclExecuteByteCode.
 	 */
-	
+
 	cmdTrace = Tcl_CreateTrace(interp, 50000,
-	        (Tcl_CmdTraceProc *) CmdTraceDeleteProc, (ClientData) NULL);
+		(Tcl_CmdTraceProc *) CmdTraceDeleteProc, (ClientData) NULL);
 	Tcl_Eval(interp, argv[2]);
     } else if (strcmp(argv[1], "leveltest") == 0) {
 	Interp *iPtr = (Interp *) interp;
@@ -1189,26 +1253,26 @@ TestcmdtraceCmd(dummy, interp, argc, argv)
 	}
 	Tcl_DeleteTrace(interp, cmdTrace);
 	Tcl_DStringFree(&buffer);
-    } else if ( strcmp(argv[1], "resulttest" ) == 0 ) {
+    } else if (strcmp(argv[1], "resulttest") == 0) {
 	/* Create an object-based trace, then eval a script. This is used
 	 * to test return codes other than TCL_OK from the trace engine.
 	 */
+
 	static int deleteCalled;
+
 	deleteCalled = 0;
-	cmdTrace = Tcl_CreateObjTrace( interp, 50000,
-				       TCL_ALLOW_INLINE_COMPILATION,
-				       ObjTraceProc,
-				       (ClientData) &deleteCalled,
-				       ObjTraceDeleteProc );
-	result = Tcl_Eval( interp, argv[ 2 ] );
-	Tcl_DeleteTrace( interp, cmdTrace );
-	if ( !deleteCalled ) {
-	    Tcl_SetResult( interp, "Delete wasn't called", TCL_STATIC );
+	cmdTrace = Tcl_CreateObjTrace(interp, 50000,
+		TCL_ALLOW_INLINE_COMPILATION, ObjTraceProc,
+		(ClientData) &deleteCalled, ObjTraceDeleteProc);
+	result = Tcl_Eval(interp, argv[2]);
+	Tcl_DeleteTrace(interp, cmdTrace);
+	if (!deleteCalled) {
+	    Tcl_SetResult(interp, "Delete wasn't called", TCL_STATIC);
 	    return TCL_ERROR;
 	} else {
 	    return result;
 	}
-    } else if ( strcmp(argv[1], "doubletest" ) == 0 ) {
+    } else if (strcmp(argv[1], "doubletest") == 0) {
 	Tcl_Trace t1, t2;
 
 	Tcl_DStringInit(&buffer);
@@ -1226,28 +1290,26 @@ TestcmdtraceCmd(dummy, interp, argc, argv)
 	Tcl_DStringFree(&buffer);
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-			 "\": must be tracetest, deletetest, doubletest or resulttest",
-			 (char *) NULL);
+		"\": must be tracetest, deletetest, doubletest or resulttest", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
 }
 
 static void
-CmdTraceProc(clientData, interp, level, command, cmdProc, cmdClientData,
-        argc, argv)
-    ClientData clientData;	/* Pointer to buffer in which the
+CmdTraceProc(
+    ClientData clientData,	/* Pointer to buffer in which the
 				 * command and arguments are appended.
 				 * Accumulates test result. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int level;			/* Current trace level. */
-    char *command;		/* The command being traced (after
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int level,			/* Current trace level. */
+    char *command,		/* The command being traced (after
 				 * substitutions). */
-    Tcl_CmdProc *cmdProc;	/* Points to command's command procedure. */
-    ClientData cmdClientData;	/* Client data associated with command
+    Tcl_CmdProc *cmdProc,	/* Points to command's command procedure. */
+    ClientData cmdClientData,	/* Client data associated with command
 				 * procedure. */
-    int argc;			/* Number of arguments. */
-    char **argv;		/* Argument strings. */
+    int argc,			/* Number of arguments. */
+    char **argv)		/* Argument strings. */
 {
     Tcl_DString *bufPtr = (Tcl_DString *) clientData;
     int i;
@@ -1262,49 +1324,49 @@ CmdTraceProc(clientData, interp, level, command, cmdProc, cmdClientData,
 }
 
 static void
-CmdTraceDeleteProc(clientData, interp, level, command, cmdProc,
-	cmdClientData, argc, argv)
-    ClientData clientData;	/* Unused. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int level;			/* Current trace level. */
-    char *command;		/* The command being traced (after
+CmdTraceDeleteProc(
+    ClientData clientData,	/* Unused. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int level,			/* Current trace level. */
+    char *command,		/* The command being traced (after
 				 * substitutions). */
-    Tcl_CmdProc *cmdProc;	/* Points to command's command procedure. */
-    ClientData cmdClientData;	/* Client data associated with command
+    Tcl_CmdProc *cmdProc,	/* Points to command's command procedure. */
+    ClientData cmdClientData,	/* Client data associated with command
 				 * procedure. */
-    int argc;			/* Number of arguments. */
-    char **argv;		/* Argument strings. */
+    int argc,			/* Number of arguments. */
+    char **argv)		/* Argument strings. */
 {
     /*
-     * Remove ourselves to test whether calling Tcl_DeleteTrace within
-     * a trace callback causes the for loop in TclExecuteByteCode that
-     * calls traces to reference freed memory.
+     * Remove ourselves to test whether calling Tcl_DeleteTrace within a trace
+     * callback causes the for loop in TclExecuteByteCode that calls traces to
+     * reference freed memory.
      */
-    
+
     Tcl_DeleteTrace(interp, cmdTrace);
 }
 
 static int
-ObjTraceProc( clientData, interp, level, command, token, objc, objv )
-    ClientData clientData;	/* unused */
-    Tcl_Interp* interp;		/* Tcl interpreter */
-    int level;			/* Execution level */
-    CONST char* command;	/* Command being executed */
-    Tcl_Command token;		/* Command information */
-    int objc;			/* Parameter count */
-    Tcl_Obj *CONST objv[];	/* Parameter list */
-{
-    CONST char* word = Tcl_GetString( objv[ 0 ] );
-    if ( !strcmp( word, "Error" ) ) {
-	Tcl_SetObjResult( interp, Tcl_NewStringObj( command, -1 ) );
+ObjTraceProc(
+    ClientData clientData,	/* unused */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int level,			/* Execution level */
+    const char *command,	/* Command being executed */
+    Tcl_Command token,		/* Command information */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const objv[])	/* Parameter list */
+{
+    const char *word = Tcl_GetString(objv[0]);
+
+    if (!strcmp(word, "Error")) {
+	Tcl_SetObjResult(interp, Tcl_NewStringObj(command, -1));
 	return TCL_ERROR;
-    } else if ( !strcmp( word, "Break" ) ) {
+    } else if (!strcmp(word, "Break")) {
 	return TCL_BREAK;
-    } else if ( !strcmp( word, "Continue" ) ) {
+    } else if (!strcmp(word, "Continue")) {
 	return TCL_CONTINUE;
-    } else if ( !strcmp( word, "Return" ) ) {
+    } else if (!strcmp(word, "Return")) {
 	return TCL_RETURN;
-    } else if ( !strcmp( word, "OtherStatus" ) ) {
+    } else if (!strcmp(word, "OtherStatus")) {
 	return 6;
     } else {
 	return TCL_OK;
@@ -1312,10 +1374,10 @@ ObjTraceProc( clientData, interp, level, command, token, objc, objv )
 }
 
 static void
-ObjTraceDeleteProc( clientData )
-    ClientData clientData;
+ObjTraceDeleteProc(
+    ClientData clientData)
 {
-    int * intPtr = (int *) clientData;
+    int *intPtr = (int *) clientData;
     *intPtr = 1;		/* Record that the trace was deleted */
 }
 
@@ -1324,11 +1386,11 @@ ObjTraceDeleteProc( clientData )
  *
  * TestcreatecommandCmd --
  *
- *	This procedure implements the "testcreatecommand" command. It is
- *	used to test that the Tcl_CreateCommand creates a new command in
- *	the namespace specified as part of its name, if any. It also
- *	checks that the namespace code ignore single ":"s in the middle
- *	or end of a command name.
+ *	This procedure implements the "testcreatecommand" command. It is used
+ *	to test that the Tcl_CreateCommand creates a new command in the
+ *	namespace specified as part of its name, if any. It also checks that
+ *	the namespace code ignore single ":"s in the middle or end of a
+ *	command name.
  *
  * Results:
  *	A standard Tcl result.
@@ -1341,44 +1403,41 @@ ObjTraceDeleteProc( clientData )
  */
 
 static int
-TestcreatecommandCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestcreatecommandCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     if (argc != 2) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" option\"", (char *) NULL);
+		" option\"", NULL);
 	return TCL_ERROR;
     }
     if (strcmp(argv[1], "create") == 0) {
 	Tcl_CreateCommand(interp, "test_ns_basic::createdcommand",
-		CreatedCommandProc, (ClientData) NULL,
-		(Tcl_CmdDeleteProc *) NULL);
+		CreatedCommandProc, (ClientData) NULL, NULL);
     } else if (strcmp(argv[1], "delete") == 0) {
 	Tcl_DeleteCommand(interp, "test_ns_basic::createdcommand");
     } else if (strcmp(argv[1], "create2") == 0) {
 	Tcl_CreateCommand(interp, "value:at:",
-		CreatedCommandProc2, (ClientData) NULL,
-		(Tcl_CmdDeleteProc *) NULL);
+		CreatedCommandProc2, (ClientData) NULL, NULL);
     } else if (strcmp(argv[1], "delete2") == 0) {
 	Tcl_DeleteCommand(interp, "value:at:");
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": must be create, delete, create2, or delete2",
-		(char *) NULL);
+		"\": must be create, delete, create2, or delete2", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
 }
 
 static int
-CreatedCommandProc(clientData, interp, argc, argv)
-    ClientData clientData;		/* String to return. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+CreatedCommandProc(
+    ClientData clientData,	/* String to return. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_CmdInfo info;
     int found;
@@ -1387,20 +1446,20 @@ CreatedCommandProc(clientData, interp, argc, argv)
 	    &info);
     if (!found) {
 	Tcl_AppendResult(interp, "CreatedCommandProc could not get command info for test_ns_basic::createdcommand",
-	        (char *) NULL);
+		NULL);
 	return TCL_ERROR;
     }
     Tcl_AppendResult(interp, "CreatedCommandProc in ",
-	    info.namespacePtr->fullName, (char *) NULL);
+	    info.namespacePtr->fullName, NULL);
     return TCL_OK;
 }
 
 static int
-CreatedCommandProc2(clientData, interp, argc, argv)
-    ClientData clientData;		/* String to return. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+CreatedCommandProc2(
+    ClientData clientData,	/* String to return. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_CmdInfo info;
     int found;
@@ -1408,11 +1467,11 @@ CreatedCommandProc2(clientData, interp, argc, argv)
     found = Tcl_GetCommandInfo(interp, "value:at:", &info);
     if (!found) {
 	Tcl_AppendResult(interp, "CreatedCommandProc2 could not get command info for test_ns_basic::createdcommand",
-	        (char *) NULL);
+		NULL);
 	return TCL_ERROR;
     }
     Tcl_AppendResult(interp, "CreatedCommandProc2 in ",
-	    info.namespacePtr->fullName, (char *) NULL);
+	    info.namespacePtr->fullName, NULL);
     return TCL_OK;
 }
 
@@ -1435,11 +1494,11 @@ CreatedCommandProc2(clientData, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestdcallCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestdcallCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     int i, id;
 
@@ -1451,10 +1510,10 @@ TestdcallCmd(dummy, interp, argc, argv)
 	}
 	if (id < 0) {
 	    Tcl_DontCallWhenDeleted(delInterp, DelCallbackProc,
-		    (ClientData) (-id));
+		    (ClientData) INT2PTR(-id));
 	} else {
 	    Tcl_CallWhenDeleted(delInterp, DelCallbackProc,
-		    (ClientData) id);
+		    (ClientData) INT2PTR(id));
 	}
     }
     Tcl_DeleteInterp(delInterp);
@@ -1467,12 +1526,11 @@ TestdcallCmd(dummy, interp, argc, argv)
  */
 
 static void
-DelCallbackProc(clientData, interp)
-    ClientData clientData;		/* Numerical value to append to
-					 * delString. */
-    Tcl_Interp *interp;			/* Interpreter being deleted. */
+DelCallbackProc(
+    ClientData clientData,	/* Numerical value to append to delString. */
+    Tcl_Interp *interp)		/* Interpreter being deleted. */
 {
-    int id = (int) clientData;
+    int id = PTR2INT(clientData);
     char buffer[TCL_INTEGER_SPACE];
 
     TclFormatInt(buffer, id);
@@ -1501,11 +1559,11 @@ DelCallbackProc(clientData, interp)
 
 	/* ARGSUSED */
 static int
-TestdelCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestdelCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     DelCmd *dPtr;
     Tcl_Interp *slave;
@@ -1531,23 +1589,23 @@ TestdelCmd(dummy, interp, argc, argv)
 }
 
 static int
-DelCmdProc(clientData, interp, argc, argv)
-    ClientData clientData;		/* String result to return. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+DelCmdProc(
+    ClientData clientData,	/* String result to return. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     DelCmd *dPtr = (DelCmd *) clientData;
 
-    Tcl_AppendResult(interp, dPtr->deleteCmd, (char *) NULL);
+    Tcl_AppendResult(interp, dPtr->deleteCmd, NULL);
     ckfree(dPtr->deleteCmd);
     ckfree((char *) dPtr);
     return TCL_OK;
 }
 
 static void
-DelDeleteProc(clientData)
-    ClientData clientData;		/* String command to evaluate. */
+DelDeleteProc(
+    ClientData clientData)	/* String command to evaluate. */
 {
     DelCmd *dPtr = (DelCmd *) clientData;
 
@@ -1576,22 +1634,118 @@ DelDeleteProc(clientData)
  */
 
 static int
-TestdelassocdataCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestdelassocdataCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     if (argc != 2) {
-        Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-                " data_key\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" data_key\"", NULL);
+	return TCL_ERROR;
     }
     Tcl_DeleteAssocData(interp, argv[1]);
     return TCL_OK;
 }
 
 /*
+ *-----------------------------------------------------------------------------
+ *
+ * TestdoubledigitsCmd --
+ *
+ *	This procedure implements the 'testdoubledigits' command. It is
+ *	used to test the low-level floating-point formatting primitives
+ *	in Tcl.
+ *
+ * Usage:
+ *	testdoubledigits fpval ndigits type ?shorten"
+ *
+ * Parameters:
+ *	fpval - Floating-point value to format.
+ *	ndigits - Digit count to request from Tcl_DoubleDigits
+ *	type - One of 'shortest', 'Steele', 'e', 'f'
+ *	shorten - Indicates that the 'shorten' flag should be passed in.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+static int
+TestdoubledigitsObjCmd(ClientData unused,
+				/* NULL */
+		       Tcl_Interp* interp,
+				/* Tcl interpreter */
+		       int objc,
+				/* Parameter count */
+		       Tcl_Obj* const objv[])
+				/* Parameter vector */
+{
+    static const char* options[] = {
+	"shortest",
+	"Steele",
+	"e",
+	"f",
+	NULL
+    };
+    static const int types[] = {
+	TCL_DD_SHORTEST,
+	TCL_DD_STEELE,
+	TCL_DD_E_FORMAT,
+	TCL_DD_F_FORMAT
+    };
+
+    const Tcl_ObjType* doubleType;
+    double d;
+    int status;
+    int ndigits;
+    int type;
+    int decpt;
+    int signum;
+    char* str;
+    char* endPtr;
+    Tcl_Obj* strObj;
+    Tcl_Obj* retval;
+
+    if (objc < 4 || objc > 5) {
+	Tcl_WrongNumArgs(interp, 1, objv, "fpval ndigits type ?shorten?");
+	return TCL_ERROR;
+    }
+    status = Tcl_GetDoubleFromObj(interp, objv[1], &d);
+    if (status != TCL_OK) {
+	doubleType = Tcl_GetObjType("double");
+	if (objv[1]->typePtr == doubleType
+	    || TclIsNaN(objv[1]->internalRep.doubleValue)) {
+	    status = TCL_OK;
+	    memcpy(&d, &(objv[1]->internalRep.doubleValue), sizeof(double));
+	}
+    }
+    if (status != TCL_OK
+	|| Tcl_GetIntFromObj(interp, objv[2], &ndigits) != TCL_OK
+	|| Tcl_GetIndexFromObj(interp, objv[3], options, "conversion type",
+			       TCL_EXACT, &type) != TCL_OK) {
+	fprintf(stderr, "bad value? %g\n", d);
+	return TCL_ERROR;
+    }
+    type = types[type];
+    if (objc > 4) {
+	if (strcmp(Tcl_GetString(objv[4]), "shorten")) {
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj("bad flag", -1));
+	    return TCL_ERROR;
+	}
+	type |= TCL_DD_SHORTEN_FLAG;
+    }
+    str = TclDoubleDigits(d, ndigits, type, &decpt, &signum, &endPtr);
+    strObj = Tcl_NewStringObj(str, endPtr-str);
+    ckfree(str);
+    retval = Tcl_NewListObj(1, &strObj);
+    Tcl_ListObjAppendElement(NULL, retval, Tcl_NewIntObj(decpt));
+    strObj = Tcl_NewStringObj(signum ? "-" : "+", 1);
+    Tcl_ListObjAppendElement(NULL, retval, strObj);
+    Tcl_SetObjResult(interp, retval);
+    return TCL_OK;
+}
+
+/*
  *----------------------------------------------------------------------
  *
  * TestdstringCmd --
@@ -1610,11 +1764,11 @@ TestdelassocdataCmd(clientData, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestdstringCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestdstringCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     int count;
 
@@ -1670,13 +1824,13 @@ TestdstringCmd(dummy, interp, argc, argv)
 	} else {
 	    Tcl_AppendResult(interp, "bad gresult option \"", argv[2],
 		    "\": must be staticsmall, staticlarge, free, or special",
-		    (char *) NULL);
+		    NULL);
 	    return TCL_ERROR;
 	}
 	Tcl_DStringGetResult(interp, &dstring);
     } else if (strcmp(argv[1], "length") == 0) {
 	char buf[TCL_INTEGER_SPACE];
-	
+
 	if (argc != 2) {
 	    goto wrongNumArgs;
 	}
@@ -1702,8 +1856,8 @@ TestdstringCmd(dummy, interp, argc, argv)
 	Tcl_DStringStartSublist(&dstring);
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": must be append, element, end, free, get, length, ",
-		"result, trunc, or start", (char *) NULL);
+		"\": must be append, element, end, free, get, length, "
+		"result, trunc, or start", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -1739,92 +1893,82 @@ static void SpecialFree(blockPtr)
 
 	/* ARGSUSED */
 static int
-TestencodingObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestencodingObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Encoding encoding;
     int index, length;
     char *string;
     TclEncoding *encodingPtr;
-    static CONST char *optionStrings[] = {
-	"create",	"delete",	"path",
-	NULL
+    static const char *optionStrings[] = {
+	"create",	"delete",	NULL
     };
     enum options {
-	ENC_CREATE,	ENC_DELETE,	ENC_PATH
+	ENC_CREATE,	ENC_DELETE
     };
-    
+
     if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
 	    &index) != TCL_OK) {
 	return TCL_ERROR;
     }
 
     switch ((enum options) index) {
-	case ENC_CREATE: {
-	    Tcl_EncodingType type;
+    case ENC_CREATE: {
+	Tcl_EncodingType type;
 
-	    if (objc != 5) {
-		return TCL_ERROR;
-	    }
-	    encodingPtr = (TclEncoding *) ckalloc(sizeof(TclEncoding));
-	    encodingPtr->interp = interp;
+	if (objc != 5) {
+	    return TCL_ERROR;
+	}
+	encodingPtr = (TclEncoding *) ckalloc(sizeof(TclEncoding));
+	encodingPtr->interp = interp;
 
-	    string = Tcl_GetStringFromObj(objv[3], &length);
-	    encodingPtr->toUtfCmd = (char *) ckalloc((unsigned) (length + 1));
-	    memcpy(encodingPtr->toUtfCmd, string, (unsigned) length + 1);
+	string = Tcl_GetStringFromObj(objv[3], &length);
+	encodingPtr->toUtfCmd = (char *) ckalloc((unsigned) (length + 1));
+	memcpy(encodingPtr->toUtfCmd, string, (unsigned) length + 1);
 
-	    string = Tcl_GetStringFromObj(objv[4], &length);
-	    encodingPtr->fromUtfCmd = (char *) ckalloc((unsigned) (length + 1));
-	    memcpy(encodingPtr->fromUtfCmd, string, (unsigned) (length + 1));
+	string = Tcl_GetStringFromObj(objv[4], &length);
+	encodingPtr->fromUtfCmd = (char *) ckalloc((unsigned) (length + 1));
+	memcpy(encodingPtr->fromUtfCmd, string, (unsigned) (length + 1));
 
-	    string = Tcl_GetStringFromObj(objv[2], &length);
+	string = Tcl_GetStringFromObj(objv[2], &length);
 
-	    type.encodingName = string;
-	    type.toUtfProc = EncodingToUtfProc;
-	    type.fromUtfProc = EncodingFromUtfProc;
-	    type.freeProc = EncodingFreeProc;
-	    type.clientData = (ClientData) encodingPtr;
-	    type.nullSize = 1;
+	type.encodingName = string;
+	type.toUtfProc = EncodingToUtfProc;
+	type.fromUtfProc = EncodingFromUtfProc;
+	type.freeProc = EncodingFreeProc;
+	type.clientData = (ClientData) encodingPtr;
+	type.nullSize = 1;
 
-	    Tcl_CreateEncoding(&type);
-	    break;
-	}
-	case ENC_DELETE: {
-	    if (objc != 3) {
-		return TCL_ERROR;
-	    }
-	    encoding = Tcl_GetEncoding(NULL, Tcl_GetString(objv[2]));
-	    Tcl_FreeEncoding(encoding);
-	    Tcl_FreeEncoding(encoding);
-	    break;
-	}
-	case ENC_PATH: {
-	    if (objc == 2) {
-		Tcl_SetObjResult(interp, TclGetLibraryPath());
-	    } else {
-		TclSetLibraryPath(objv[2]);
-	    }
-	    break;
+	Tcl_CreateEncoding(&type);
+	break;
+    }
+    case ENC_DELETE:
+	if (objc != 3) {
+	    return TCL_ERROR;
 	}
+	encoding = Tcl_GetEncoding(NULL, Tcl_GetString(objv[2]));
+	Tcl_FreeEncoding(encoding);
+	Tcl_FreeEncoding(encoding);
+	break;
     }
     return TCL_OK;
 }
-static int 
-EncodingToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* TclEncoding structure. */
-    CONST char *src;		/* Source string in specified encoding. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Current state. */
-    char *dst;			/* Output buffer. */
-    int dstLen;			/* The maximum length of output buffer. */
-    int *srcReadPtr;		/* Filled with number of bytes read. */
-    int *dstWrotePtr;		/* Filled with number of bytes stored. */
-    int *dstCharsPtr;		/* Filled with number of chars stored. */
+
+static int
+EncodingToUtfProc(
+    ClientData clientData,	/* TclEncoding structure. */
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Current state. */
+    char *dst,			/* Output buffer. */
+    int dstLen,			/* The maximum length of output buffer. */
+    int *srcReadPtr,		/* Filled with number of bytes read. */
+    int *dstWrotePtr,		/* Filled with number of bytes stored. */
+    int *dstCharsPtr)		/* Filled with number of chars stored. */
 {
     int len;
     TclEncoding *encodingPtr;
@@ -1844,19 +1988,19 @@ EncodingToUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
     *dstCharsPtr = len;
     return TCL_OK;
 }
-static int 
-EncodingFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
-	srcReadPtr, dstWrotePtr, dstCharsPtr)
-    ClientData clientData;	/* TclEncoding structure. */
-    CONST char *src;		/* Source string in specified encoding. */
-    int srcLen;			/* Source string length in bytes. */
-    int flags;			/* Conversion control flags. */
-    Tcl_EncodingState *statePtr;/* Current state. */
-    char *dst;			/* Output buffer. */
-    int dstLen;			/* The maximum length of output buffer. */
-    int *srcReadPtr;		/* Filled with number of bytes read. */
-    int *dstWrotePtr;		/* Filled with number of bytes stored. */
-    int *dstCharsPtr;		/* Filled with number of chars stored. */
+
+static int
+EncodingFromUtfProc(
+    ClientData clientData,	/* TclEncoding structure. */
+    const char *src,		/* Source string in specified encoding. */
+    int srcLen,			/* Source string length in bytes. */
+    int flags,			/* Conversion control flags. */
+    Tcl_EncodingState *statePtr,/* Current state. */
+    char *dst,			/* Output buffer. */
+    int dstLen,			/* The maximum length of output buffer. */
+    int *srcReadPtr,		/* Filled with number of bytes read. */
+    int *dstWrotePtr,		/* Filled with number of bytes stored. */
+    int *dstCharsPtr)		/* Filled with number of chars stored. */
 {
     int len;
     TclEncoding *encodingPtr;
@@ -1876,9 +2020,10 @@ EncodingFromUtfProc(clientData, src, srcLen, flags, statePtr, dst, dstLen,
     *dstCharsPtr = len;
     return TCL_OK;
 }
+
 static void
-EncodingFreeProc(clientData)
-    ClientData clientData;	/* ClientData associated with type. */
+EncodingFreeProc(
+    ClientData clientData)	/* ClientData associated with type. */
 {
     TclEncoding *encodingPtr;
 
@@ -1906,60 +2051,31 @@ EncodingFreeProc(clientData)
  */
 
 static int
-TestevalexObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+TestevalexObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    Interp *iPtr = (Interp *) interp;
-    int code, oldFlags, length, flags;
-    char *string;
-
-    if (objc == 1) {
-	/*
-	 * The command was invoked with no arguments, so just toggle
-	 * the flag that determines whether we use Tcl_EvalEx.
-	 */
-
-	if (iPtr->flags & USE_EVAL_DIRECT) {
-	    iPtr->flags &= ~USE_EVAL_DIRECT;
-	    Tcl_SetResult(interp, "disabling direct evaluation", TCL_STATIC);
-	} else {
-	    iPtr->flags |= USE_EVAL_DIRECT;
-	    Tcl_SetResult(interp, "enabling direct evaluation", TCL_STATIC);
-	}
-	return TCL_OK;
-    }
+    int length, flags;
+    char *script;
 
     flags = 0;
     if (objc == 3) {
-	string = Tcl_GetStringFromObj(objv[2], &length);
-	if (strcmp(string, "global") != 0) {
-	    Tcl_AppendResult(interp, "bad value \"", string,
-		    "\": must be global", (char *) NULL);
+	char *global = Tcl_GetStringFromObj(objv[2], &length);
+	if (strcmp(global, "global") != 0) {
+	    Tcl_AppendResult(interp, "bad value \"", global,
+		    "\": must be global", NULL);
 	    return TCL_ERROR;
 	}
 	flags = TCL_EVAL_GLOBAL;
     } else if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "script ?global?");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    Tcl_SetResult(interp, "xxx", TCL_STATIC);
 
-    /*
-     * Note, we have to set the USE_EVAL_DIRECT flag in the interpreter
-     * in addition to calling Tcl_EvalEx.  This is needed so that even nested
-     * commands are evaluated directly.
-     */
-
-    oldFlags = iPtr->flags;
-    iPtr->flags |= USE_EVAL_DIRECT;
-    string = Tcl_GetStringFromObj(objv[1], &length);
-    code = Tcl_EvalEx(interp, string, length, flags); 
-    iPtr->flags = (iPtr->flags & ~USE_EVAL_DIRECT)
-	    | (oldFlags & USE_EVAL_DIRECT);
-    return code;
+    script = Tcl_GetStringFromObj(objv[1], &length);
+    return Tcl_EvalEx(interp, script, length, flags);
 }
 
 /*
@@ -1980,17 +2096,17 @@ TestevalexObjCmd(dummy, interp, objc, objv)
  */
 
 static int
-TestevalobjvObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+TestevalobjvObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int evalGlobal;
 
     if (objc < 3) {
 	Tcl_WrongNumArgs(interp, 1, objv, "global word ?word ...?");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
     if (Tcl_GetIntFromObj(interp, objv[1], &evalGlobal) != TCL_OK) {
 	return TCL_ERROR;
@@ -2029,74 +2145,67 @@ TestevalobjvObjCmd(dummy, interp, objc, objv)
  */
 
 static int
-TesteventObjCmd( ClientData unused,      /* Not used */
-		 Tcl_Interp* interp,     /* Tcl interpreter */
-		 int objc,               /* Parameter count */
-		 Tcl_Obj *CONST objv[] ) /* Parameter vector */
-{
-    
-    static CONST char* subcommands[] = { /* Possible subcommands */
-	"queue",
-	"delete",
-	NULL
+TesteventObjCmd(
+    ClientData unused,		/* Not used */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const objv[])	/* Parameter vector */
+{
+    static const char *subcommands[] = { /* Possible subcommands */
+	"queue", "delete", NULL
     };
     int subCmdIndex;		/* Index of the chosen subcommand */
-    static CONST char* positions[] = { /* Possible queue positions */
-	"head",
-	"tail",
-	"mark",
-	NULL
+    static const char *positions[] = { /* Possible queue positions */
+	"head", "tail", "mark", NULL
     };
     int posIndex;		/* Index of the chosen position */
-    static CONST Tcl_QueuePosition posNum[] = { 
-	    			/* Interpretation of the chosen position */
+    static const Tcl_QueuePosition posNum[] = {
+				/* Interpretation of the chosen position */
 	TCL_QUEUE_HEAD,
 	TCL_QUEUE_TAIL,
 	TCL_QUEUE_MARK
     };
-    TestEvent* ev;		/* Event to be queued */
+    TestEvent *ev;		/* Event to be queued */
 
-    if ( objc < 2 ) {
-	Tcl_WrongNumArgs( interp, 1, objv, "subcommand ?args?" );
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?args?");
 	return TCL_ERROR;
     }
-    if ( Tcl_GetIndexFromObj( interp, objv[1], subcommands, "subcommand",
-			      TCL_EXACT, &subCmdIndex ) != TCL_OK ) {
+    if (Tcl_GetIndexFromObj(interp, objv[1], subcommands, "subcommand",
+	    TCL_EXACT, &subCmdIndex) != TCL_OK) {
 	return TCL_ERROR;
     }
-    switch ( subCmdIndex ) {
+    switch (subCmdIndex) {
     case 0:			/* queue */
-	if ( objc != 5 ) {
-	    Tcl_WrongNumArgs( interp, 2, objv, "name position script" );
+	if (objc != 5) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name position script");
 	    return TCL_ERROR;
 	}
-	if ( Tcl_GetIndexFromObj( interp, objv[3], positions,
-				  "position specifier", TCL_EXACT,
-				  &posIndex ) != TCL_OK ) {
+	if (Tcl_GetIndexFromObj(interp, objv[3], positions,
+		"position specifier", TCL_EXACT, &posIndex) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-	ev = (TestEvent*) ckalloc( sizeof( TestEvent ) );
+	ev = (TestEvent *) ckalloc(sizeof(TestEvent));
 	ev->header.proc = TesteventProc;
 	ev->header.nextPtr = NULL;
 	ev->interp = interp;
-	ev->command = objv[ 4 ];
-	Tcl_IncrRefCount( ev->command );
-	ev->tag = objv[ 2 ];
-	Tcl_IncrRefCount( ev->tag );
-	Tcl_QueueEvent( (Tcl_Event*) ev, posNum[ posIndex ] );
+	ev->command = objv[4];
+	Tcl_IncrRefCount(ev->command);
+	ev->tag = objv[2];
+	Tcl_IncrRefCount(ev->tag);
+	Tcl_QueueEvent((Tcl_Event *) ev, posNum[posIndex]);
 	break;
 
     case 1:			/* delete */
-	if ( objc != 3 ) {
-	    Tcl_WrongNumArgs( interp, 2, objv, "name" );
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name");
 	    return TCL_ERROR;
 	}
-	Tcl_DeleteEvents( TesteventDeleteProc, objv[ 2 ] );
+	Tcl_DeleteEvents(TesteventDeleteProc, objv[2]);
 	break;
     }
 
     return TCL_OK;
-
 }
 
 /*
@@ -2106,49 +2215,49 @@ TesteventObjCmd( ClientData unused,      /* Not used */
  *
  *	Delivers a test event to the Tcl interpreter as part of event
  *	queue testing.
- * 
+ *
  * Results:
  *	Returns 1 if the event has been serviced, 0 otherwise.
  *
  * Side effects:
- *	Evaluates the event's callback script, so has whatever
- *	side effects the callback has.  The return value of the
- *	callback script becomes the return value of this function.
- *	If the callback script reports an error, it is reported as
- *	a background error.
+ *	Evaluates the event's callback script, so has whatever side effects
+ *	the callback has.  The return value of the callback script becomes the
+ *	return value of this function.  If the callback script reports an
+ *	error, it is reported as a background error.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-TesteventProc( Tcl_Event* event, /* Event to deliver */
-	       int flags )	/* Current flags for Tcl_ServiceEvent */
-{
-    TestEvent * ev = (TestEvent *) event;
-    Tcl_Interp* interp = ev->interp;
-    Tcl_Obj* command = ev->command;
-    int result = Tcl_EvalObjEx( interp, command,
-				TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT );
+TesteventProc(
+    Tcl_Event *event,		/* Event to deliver */
+    int flags)			/* Current flags for Tcl_ServiceEvent */
+{
+    TestEvent *ev = (TestEvent *) event;
+    Tcl_Interp *interp = ev->interp;
+    Tcl_Obj *command = ev->command;
+    int result = Tcl_EvalObjEx(interp, command,
+	    TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT);
     int retval;
-    if ( result != TCL_OK ) {
-	Tcl_AddErrorInfo( interp,
-			  "    (command bound to \"testevent\" callback)" );
-	Tcl_BackgroundError( interp );
+
+    if (result != TCL_OK) {
+	Tcl_AddErrorInfo(interp,
+		"    (command bound to \"testevent\" callback)");
+	Tcl_BackgroundError(interp);
 	return 1;		/* Avoid looping on errors */
     }
-    if ( Tcl_GetBooleanFromObj( interp,
-				Tcl_GetObjResult( interp ),
-				&retval ) != TCL_OK ) {
-	Tcl_AddErrorInfo( interp, 
-			  "    (return value from \"testevent\" callback)" );
-	Tcl_BackgroundError( interp );
+    if (Tcl_GetBooleanFromObj(interp, Tcl_GetObjResult(interp),
+	    &retval) != TCL_OK) {
+	Tcl_AddErrorInfo(interp,
+		"    (return value from \"testevent\" callback)");
+	Tcl_BackgroundError(interp);
 	return 1;
     }
-    if ( retval ) {
-	Tcl_DecrRefCount( ev->tag );
-	Tcl_DecrRefCount( ev->command );
+    if (retval) {
+	Tcl_DecrRefCount(ev->tag);
+	Tcl_DecrRefCount(ev->command);
     }
-	
+
     return retval;
 }
 
@@ -2171,25 +2280,26 @@ TesteventProc( Tcl_Event* event, /* Event to deliver */
  */
 
 static int
-TesteventDeleteProc( Tcl_Event* event, /* Event to examine */
-		     ClientData clientData ) /* Tcl_Obj containing the name
-					      * of the event(s) to remove */
+TesteventDeleteProc(
+    Tcl_Event *event,		/* Event to examine */
+    ClientData clientData)	/* Tcl_Obj containing the name of the event(s)
+				 * to remove */
 {
-    TestEvent* ev;		/* Event to examine */
-    char* evNameStr;
-    Tcl_Obj* targetName;	/* Name of the event(s) to delete */
-    char* targetNameStr;
+    TestEvent *ev;		/* Event to examine */
+    char *evNameStr;
+    Tcl_Obj *targetName;	/* Name of the event(s) to delete */
+    char *targetNameStr;
 
-    if ( event->proc != TesteventProc ) {
+    if (event->proc != TesteventProc) {
 	return 0;
     }
-    targetName = (Tcl_Obj*) clientData;
-    targetNameStr = (char*) Tcl_GetStringFromObj( targetName, NULL );
-    ev = (TestEvent*) event;
-    evNameStr = Tcl_GetStringFromObj( ev->tag, NULL );
-    if ( strcmp( evNameStr, targetNameStr ) == 0 ) {
-	Tcl_DecrRefCount( ev->tag );
-	Tcl_DecrRefCount( ev->command );
+    targetName = (Tcl_Obj *) clientData;
+    targetNameStr = (char *) Tcl_GetStringFromObj(targetName, NULL);
+    ev = (TestEvent *) event;
+    evNameStr = Tcl_GetStringFromObj(ev->tag, NULL);
+    if (strcmp(evNameStr, targetNameStr) == 0) {
+	Tcl_DecrRefCount(ev->tag);
+	Tcl_DecrRefCount(ev->command);
 	return 1;
     } else {
 	return 0;
@@ -2214,54 +2324,62 @@ TesteventDeleteProc( Tcl_Event* event, /* Event to examine */
  */
 
 static int
-TestexithandlerCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestexithandlerCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     int value;
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-                " create|delete value\"", (char *) NULL);
-        return TCL_ERROR;
+		" create|delete value\"", NULL);
+	return TCL_ERROR;
     }
     if (Tcl_GetInt(interp, argv[2], &value) != TCL_OK) {
 	return TCL_ERROR;
     }
     if (strcmp(argv[1], "create") == 0) {
 	Tcl_CreateExitHandler((value & 1) ? ExitProcOdd : ExitProcEven,
-		(ClientData) value);
+		(ClientData) INT2PTR(value));
     } else if (strcmp(argv[1], "delete") == 0) {
 	Tcl_DeleteExitHandler((value & 1) ? ExitProcOdd : ExitProcEven,
-		(ClientData) value);
+		(ClientData) INT2PTR(value));
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": must be create or delete", (char *) NULL);
+		"\": must be create or delete", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
 }
 
 static void
-ExitProcOdd(clientData)
-    ClientData clientData;		/* Integer value to print. */
+ExitProcOdd(
+    ClientData clientData)	/* Integer value to print. */
 {
     char buf[16 + TCL_INTEGER_SPACE];
+    size_t len;
 
-    sprintf(buf, "odd %d\n", (int) clientData);
-    write(1, buf, strlen(buf));
+    sprintf(buf, "odd %d\n", PTR2INT(clientData));
+    len = strlen(buf);
+    if (len != (size_t) write(1, buf, len)) {
+	Tcl_Panic("ExitProcOdd: unable to write to stdout");
+    }
 }
 
 static void
-ExitProcEven(clientData)
-    ClientData clientData;		/* Integer value to print. */
+ExitProcEven(
+    ClientData clientData)	/* Integer value to print. */
 {
     char buf[16 + TCL_INTEGER_SPACE];
+    size_t len;
 
-    sprintf(buf, "even %d\n", (int) clientData);
-    write(1, buf, strlen(buf));
+    sprintf(buf, "even %d\n", PTR2INT(clientData));
+    len = strlen(buf);
+    if (len != (size_t) write(1, buf, len)) {
+	Tcl_Panic("ExitProcEven: unable to write to stdout");
+    }
 }
 
 /*
@@ -2282,20 +2400,25 @@ ExitProcEven(clientData)
  */
 
 static int
-TestexprlongCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestexprlongCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     long exprResult;
     char buf[4 + TCL_INTEGER_SPACE];
     int result;
-    
+
+    if (argc != 2) {
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" expression\"", NULL);
+	return TCL_ERROR;
+    }
     Tcl_SetResult(interp, "This is a result", TCL_STATIC);
-    result = Tcl_ExprLong(interp, "4+1", &exprResult);
+    result = Tcl_ExprLong(interp, argv[1], &exprResult);
     if (result != TCL_OK) {
-        return result;
+	return result;
     }
     sprintf(buf, ": %ld", exprResult);
     Tcl_AppendResult(interp, buf, NULL);
@@ -2320,11 +2443,11 @@ TestexprlongCmd(clientData, interp, argc, argv)
  */
 
 static int
-TestexprlongobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST *objv;		/* Argument objects. */
+TestexprlongobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const *objv)	/* Argument objects. */
 {
     long exprResult;
     char buf[4 + TCL_INTEGER_SPACE];
@@ -2337,7 +2460,7 @@ TestexprlongobjCmd(clientData, interp, objc, objv)
     Tcl_SetResult(interp, "This is a result", TCL_STATIC);
     result = Tcl_ExprLongObj(interp, objv[1], &exprResult);
     if (result != TCL_OK) {
-        return result;
+	return result;
     }
     sprintf(buf, ": %ld", exprResult);
     Tcl_AppendResult(interp, buf, NULL);
@@ -2347,6 +2470,93 @@ TestexprlongobjCmd(clientData, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
+ * TestexprdoubleCmd --
+ *
+ *	This procedure verifies that Tcl_ExprDouble does not modify the
+ *	interpreter result if there is no error.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestexprdoubleCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    double exprResult;
+    char buf[4 + TCL_DOUBLE_SPACE];
+    int result;
+
+    if (argc != 2) {
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" expression\"", NULL);
+	return TCL_ERROR;
+    }
+    Tcl_SetResult(interp, "This is a result", TCL_STATIC);
+    result = Tcl_ExprDouble(interp, argv[1], &exprResult);
+    if (result != TCL_OK) {
+	return result;
+    }
+    strcpy(buf, ": ");
+    Tcl_PrintDouble(interp, exprResult, buf+2);
+    Tcl_AppendResult(interp, buf, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestexprdoubleobjCmd --
+ *
+ *	This procedure verifies that Tcl_ExprLongObj does not modify the
+ *	interpreter result if there is no error.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestexprdoubleobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const *objv)	/* Argument objects. */
+{
+    double exprResult;
+    char buf[4 + TCL_DOUBLE_SPACE];
+    int result;
+
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "expression");
+	return TCL_ERROR;
+    }
+    Tcl_SetResult(interp, "This is a result", TCL_STATIC);
+    result = Tcl_ExprDoubleObj(interp, objv[1], &exprResult);
+    if (result != TCL_OK) {
+	return result;
+    }
+    strcpy(buf, ": ");
+    Tcl_PrintDouble(interp, exprResult, buf+2);
+    Tcl_AppendResult(interp, buf, NULL);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TestexprstringCmd --
  *
  *	This procedure tests the basic operation of Tcl_ExprString.
@@ -2361,16 +2571,16 @@ TestexprlongobjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestexprstringCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestexprstringCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     if (argc != 2) {
-        Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-                " expression\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" expression\"", NULL);
+	return TCL_ERROR;
     }
     return Tcl_ExprString(interp, argv[1]);
 }
@@ -2380,9 +2590,8 @@ TestexprstringCmd(clientData, interp, argc, argv)
  *
  * TestfilelinkCmd --
  *
- *	This procedure implements the "testfilelink" command.  It is used
- *	to test the effects of creating and manipulating filesystem links
- *	in Tcl.
+ *	This procedure implements the "testfilelink" command.  It is used to
+ *	test the effects of creating and manipulating filesystem links in Tcl.
  *
  * Results:
  *	A standard Tcl result.
@@ -2394,11 +2603,11 @@ TestexprstringCmd(clientData, interp, argc, argv)
  */
 
 static int
-TestfilelinkCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestfilelinkCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     Tcl_Obj *contents;
 
@@ -2406,35 +2615,35 @@ TestfilelinkCmd(clientData, interp, objc, objv)
 	Tcl_WrongNumArgs(interp, 1, objv, "source ?target?");
 	return TCL_ERROR;
     }
-    
+
     if (Tcl_FSConvertToPathType(interp, objv[1]) != TCL_OK) {
 	return TCL_ERROR;
     }
-    
+
     if (objc == 3) {
 	/* Create link from source to target */
-	contents = Tcl_FSLink(objv[1], objv[2], 
-			TCL_CREATE_SYMBOLIC_LINK|TCL_CREATE_HARD_LINK);
+	contents = Tcl_FSLink(objv[1], objv[2],
+		TCL_CREATE_SYMBOLIC_LINK|TCL_CREATE_HARD_LINK);
 	if (contents == NULL) {
-	    Tcl_AppendResult(interp, "could not create link from \"", 
-		    Tcl_GetString(objv[1]), "\" to \"", 
-		    Tcl_GetString(objv[2]), "\": ", 
-		    Tcl_PosixError(interp), (char *) NULL);
+	    Tcl_AppendResult(interp, "could not create link from \"",
+		    Tcl_GetString(objv[1]), "\" to \"",
+		    Tcl_GetString(objv[2]), "\": ",
+		    Tcl_PosixError(interp), NULL);
 	    return TCL_ERROR;
 	}
     } else {
 	/* Read link */
 	contents = Tcl_FSLink(objv[1], NULL, 0);
 	if (contents == NULL) {
-	    Tcl_AppendResult(interp, "could not read link \"", 
-		    Tcl_GetString(objv[1]), "\": ", 
-		    Tcl_PosixError(interp), (char *) NULL);
+	    Tcl_AppendResult(interp, "could not read link \"",
+		    Tcl_GetString(objv[1]), "\": ",
+		    Tcl_PosixError(interp), NULL);
 	    return TCL_ERROR;
 	}
     }
     Tcl_SetObjResult(interp, contents);
     if (objc == 2) {
-	/* 
+	/*
 	 * If we are creating a link, this will actually just
 	 * be objv[3], and we don't own it
 	 */
@@ -2461,22 +2670,22 @@ TestfilelinkCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestgetassocdataCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestgetassocdataCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     char *res;
-    
+
     if (argc != 2) {
-        Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-                " data_key\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" data_key\"", NULL);
+	return TCL_ERROR;
     }
     res = (char *) Tcl_GetAssocData(interp, argv[1], NULL);
     if (res != NULL) {
-        Tcl_AppendResult(interp, res, NULL);
+	Tcl_AppendResult(interp, res, NULL);
     }
     return TCL_OK;
 }
@@ -2499,25 +2708,21 @@ TestgetassocdataCmd(clientData, interp, argc, argv)
  */
 
 static int
-TestgetplatformCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestgetplatformCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
-    static CONST char *platformStrings[] = { "unix", "mac", "windows" };
+    static const char *platformStrings[] = { "unix", "mac", "windows" };
     TclPlatformType *platform;
 
-#if defined(__WIN32__) || defined(__CYGWIN__)
-    platform = TclWinGetPlatform();
-#else
-    platform = &tclPlatform;
-#endif
-    
+    platform = TclGetPlatform();
+
     if (argc != 1) {
-        Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-		(char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		NULL);
+	return TCL_ERROR;
     }
 
     Tcl_AppendResult(interp, platformStrings[*platform], NULL);
@@ -2544,22 +2749,22 @@ TestgetplatformCmd(clientData, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestinterpdeleteCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestinterpdeleteCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_Interp *slaveToDelete;
 
     if (argc != 2) {
-        Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                " path\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		" path\"", NULL);
+	return TCL_ERROR;
     }
     slaveToDelete = Tcl_GetSlave(interp, argv[1]);
-    if (slaveToDelete == (Tcl_Interp *) NULL) {
-        return TCL_ERROR;
+    if (slaveToDelete == NULL) {
+	return TCL_ERROR;
     }
     Tcl_DeleteInterp(slaveToDelete);
     return TCL_OK;
@@ -2585,17 +2790,26 @@ TestinterpdeleteCmd(dummy, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestlinkCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestlinkCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     static int intVar = 43;
     static int boolVar = 4;
     static double realVar = 1.23;
     static Tcl_WideInt wideVar = Tcl_LongAsWide(79);
     static char *stringVar = NULL;
+    static char charVar = '@';
+    static unsigned char ucharVar = 130;
+    static short shortVar = 3000;
+    static unsigned short ushortVar = 60000;
+    static unsigned int uintVar = 0xbeeffeed;
+    static long longVar = 123456789L;
+    static unsigned long ulongVar = 3456789012UL;
+    static float floatVar = 4.5;
+    static Tcl_WideUInt uwideVar = (Tcl_WideUInt) Tcl_LongAsWide(123);
     static int created = 0;
     char buffer[2*TCL_DOUBLE_SPACE];
     int writable, flag;
@@ -2603,14 +2817,16 @@ TestlinkCmd(dummy, interp, argc, argv)
 
     if (argc < 2) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" option ?arg arg arg arg arg?\"", (char *) NULL);
+		" option ?arg arg arg arg arg arg arg arg arg arg arg arg"
+		" arg arg?\"", NULL);
 	return TCL_ERROR;
     }
     if (strcmp(argv[1], "create") == 0) {
-	if (argc != 7) {
+	if (argc != 16) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"",
 		argv[0], " ", argv[1],
-		" intRO realRO boolRO stringRO wideRO\"", (char *) NULL);
+		" intRO realRO boolRO stringRO wideRO charRO ucharRO shortRO"
+		" ushortRO uintRO longRO ulongRO floatRO uwideRO\"", NULL);
 	    return TCL_ERROR;
 	}
 	if (created) {
@@ -2619,6 +2835,15 @@ TestlinkCmd(dummy, interp, argc, argv)
 	    Tcl_UnlinkVar(interp, "bool");
 	    Tcl_UnlinkVar(interp, "string");
 	    Tcl_UnlinkVar(interp, "wide");
+	    Tcl_UnlinkVar(interp, "char");
+	    Tcl_UnlinkVar(interp, "uchar");
+	    Tcl_UnlinkVar(interp, "short");
+	    Tcl_UnlinkVar(interp, "ushort");
+	    Tcl_UnlinkVar(interp, "uint");
+	    Tcl_UnlinkVar(interp, "long");
+	    Tcl_UnlinkVar(interp, "ulong");
+	    Tcl_UnlinkVar(interp, "float");
+	    Tcl_UnlinkVar(interp, "uwide");
 	}
 	created = 1;
 	if (Tcl_GetBoolean(interp, argv[2], &writable) != TCL_OK) {
@@ -2661,17 +2886,99 @@ TestlinkCmd(dummy, interp, argc, argv)
 			TCL_LINK_WIDE_INT | flag) != TCL_OK) {
 	    return TCL_ERROR;
 	}
+	if (Tcl_GetBoolean(interp, argv[7], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "char", (char *) &charVar,
+		TCL_LINK_CHAR | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[8], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "uchar", (char *) &ucharVar,
+		TCL_LINK_UCHAR | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[9], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "short", (char *) &shortVar,
+		TCL_LINK_SHORT | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[10], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "ushort", (char *) &ushortVar,
+		TCL_LINK_USHORT | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[11], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "uint", (char *) &uintVar,
+		TCL_LINK_UINT | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[12], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "long", (char *) &longVar,
+		TCL_LINK_LONG | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[13], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "ulong", (char *) &ulongVar,
+		TCL_LINK_ULONG | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[14], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "float", (char *) &floatVar,
+		TCL_LINK_FLOAT | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBoolean(interp, argv[15], &writable) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	flag = (writable != 0) ? 0 : TCL_LINK_READ_ONLY;
+	if (Tcl_LinkVar(interp, "uwide", (char *) &uwideVar,
+		TCL_LINK_WIDE_UINT | flag) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+
     } else if (strcmp(argv[1], "delete") == 0) {
 	Tcl_UnlinkVar(interp, "int");
 	Tcl_UnlinkVar(interp, "real");
 	Tcl_UnlinkVar(interp, "bool");
 	Tcl_UnlinkVar(interp, "string");
 	Tcl_UnlinkVar(interp, "wide");
+	Tcl_UnlinkVar(interp, "char");
+	Tcl_UnlinkVar(interp, "uchar");
+	Tcl_UnlinkVar(interp, "short");
+	Tcl_UnlinkVar(interp, "ushort");
+	Tcl_UnlinkVar(interp, "uint");
+	Tcl_UnlinkVar(interp, "long");
+	Tcl_UnlinkVar(interp, "ulong");
+	Tcl_UnlinkVar(interp, "float");
+	Tcl_UnlinkVar(interp, "uwide");
 	created = 0;
     } else if (strcmp(argv[1], "get") == 0) {
 	TclFormatInt(buffer, intVar);
 	Tcl_AppendElement(interp, buffer);
-	Tcl_PrintDouble((Tcl_Interp *) NULL, realVar, buffer);
+	Tcl_PrintDouble(NULL, realVar, buffer);
 	Tcl_AppendElement(interp, buffer);
 	TclFormatInt(buffer, boolVar);
 	Tcl_AppendElement(interp, buffer);
@@ -2682,12 +2989,36 @@ TestlinkCmd(dummy, interp, argc, argv)
 	tmp = Tcl_NewWideIntObj(wideVar);
 	Tcl_AppendElement(interp, Tcl_GetString(tmp));
 	Tcl_DecrRefCount(tmp);
+	TclFormatInt(buffer, (int) charVar);
+	Tcl_AppendElement(interp, buffer);
+	TclFormatInt(buffer, (int) ucharVar);
+	Tcl_AppendElement(interp, buffer);
+	TclFormatInt(buffer, (int) shortVar);
+	Tcl_AppendElement(interp, buffer);
+	TclFormatInt(buffer, (int) ushortVar);
+	Tcl_AppendElement(interp, buffer);
+	TclFormatInt(buffer, (int) uintVar);
+	Tcl_AppendElement(interp, buffer);
+	tmp = Tcl_NewLongObj(longVar);
+	Tcl_AppendElement(interp, Tcl_GetString(tmp));
+	Tcl_DecrRefCount(tmp);
+	tmp = Tcl_NewLongObj((long)ulongVar);
+	Tcl_AppendElement(interp, Tcl_GetString(tmp));
+	Tcl_DecrRefCount(tmp);
+	Tcl_PrintDouble(NULL, (double)floatVar, buffer);
+	Tcl_AppendElement(interp, buffer);
+	tmp = Tcl_NewWideIntObj((Tcl_WideInt)uwideVar);
+	Tcl_AppendElement(interp, Tcl_GetString(tmp));
+	Tcl_DecrRefCount(tmp);
     } else if (strcmp(argv[1], "set") == 0) {
-	if (argc != 7) {
+	int v;
+
+	if (argc != 16) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"",
 		    argv[0], " ", argv[1],
-		    " intValue realValue boolValue stringValue wideValue\"",
-		    (char *) NULL);
+		    " intValue realValue boolValue stringValue wideValue"
+		    " charValue ucharValue shortValue ushortValue uintValue"
+		    " longValue ulongValue floatValue uwideValue\"", NULL);
 	    return TCL_ERROR;
 	}
 	if (argv[2][0] != 0) {
@@ -2724,12 +3055,74 @@ TestlinkCmd(dummy, interp, argc, argv)
 	    }
 	    Tcl_DecrRefCount(tmp);
 	}
+	if (argv[7][0]) {
+	    if (Tcl_GetInt(interp, argv[7], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    charVar = (char) v;
+	}
+	if (argv[8][0]) {
+	    if (Tcl_GetInt(interp, argv[8], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    ucharVar = (unsigned char) v;
+	}
+	if (argv[9][0]) {
+	    if (Tcl_GetInt(interp, argv[9], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    shortVar = (short) v;
+	}
+	if (argv[10][0]) {
+	    if (Tcl_GetInt(interp, argv[10], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    ushortVar = (unsigned short) v;
+	}
+	if (argv[11][0]) {
+	    if (Tcl_GetInt(interp, argv[11], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    uintVar = (unsigned int) v;
+	}
+	if (argv[12][0]) {
+	    if (Tcl_GetInt(interp, argv[12], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    longVar = (long) v;
+	}
+	if (argv[13][0]) {
+	    if (Tcl_GetInt(interp, argv[13], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    ulongVar = (unsigned long) v;
+	}
+	if (argv[14][0]) {
+	    double d;
+	    if (Tcl_GetDouble(interp, argv[14], &d) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    floatVar = (float) d;
+	}
+	if (argv[15][0]) {
+	    Tcl_WideInt w;
+	    tmp = Tcl_NewStringObj(argv[15], -1);
+	    if (Tcl_GetWideIntFromObj(interp, tmp, &w) != TCL_OK) {
+		Tcl_DecrRefCount(tmp);
+		return TCL_ERROR;
+	    }
+	    Tcl_DecrRefCount(tmp);
+	    uwideVar = (Tcl_WideUInt) w;
+	}
     } else if (strcmp(argv[1], "update") == 0) {
-	if (argc != 7) {
+	int v;
+
+	if (argc != 16) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"",
 		    argv[0], " ", argv[1],
-		    "intValue realValue boolValue stringValue wideValue\"",
-		    (char *) NULL);
+		    " intValue realValue boolValue stringValue wideValue"
+		    " charValue ucharValue shortValue ushortValue uintValue"
+		    " longValue ulongValue floatValue uwideValue\"", NULL);
 	    return TCL_ERROR;
 	}
 	if (argv[2][0] != 0) {
@@ -2771,10 +3164,77 @@ TestlinkCmd(dummy, interp, argc, argv)
 	    Tcl_DecrRefCount(tmp);
 	    Tcl_UpdateLinkedVar(interp, "wide");
 	}
+	if (argv[7][0]) {
+	    if (Tcl_GetInt(interp, argv[7], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    charVar = (char) v;
+	    Tcl_UpdateLinkedVar(interp, "char");
+	}
+	if (argv[8][0]) {
+	    if (Tcl_GetInt(interp, argv[8], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    ucharVar = (unsigned char) v;
+	    Tcl_UpdateLinkedVar(interp, "uchar");
+	}
+	if (argv[9][0]) {
+	    if (Tcl_GetInt(interp, argv[9], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    shortVar = (short) v;
+	    Tcl_UpdateLinkedVar(interp, "short");
+	}
+	if (argv[10][0]) {
+	    if (Tcl_GetInt(interp, argv[10], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    ushortVar = (unsigned short) v;
+	    Tcl_UpdateLinkedVar(interp, "ushort");
+	}
+	if (argv[11][0]) {
+	    if (Tcl_GetInt(interp, argv[11], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    uintVar = (unsigned int) v;
+	    Tcl_UpdateLinkedVar(interp, "uint");
+	}
+	if (argv[12][0]) {
+	    if (Tcl_GetInt(interp, argv[12], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    longVar = (long) v;
+	    Tcl_UpdateLinkedVar(interp, "long");
+	}
+	if (argv[13][0]) {
+	    if (Tcl_GetInt(interp, argv[13], &v) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    ulongVar = (unsigned long) v;
+	    Tcl_UpdateLinkedVar(interp, "ulong");
+	}
+	if (argv[14][0]) {
+	    double d;
+	    if (Tcl_GetDouble(interp, argv[14], &d) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    floatVar = (float) d;
+	    Tcl_UpdateLinkedVar(interp, "float");
+	}
+	if (argv[15][0]) {
+	    Tcl_WideInt w;
+	    tmp = Tcl_NewStringObj(argv[15], -1);
+	    if (Tcl_GetWideIntFromObj(interp, tmp, &w) != TCL_OK) {
+		Tcl_DecrRefCount(tmp);
+		return TCL_ERROR;
+	    }
+	    Tcl_DecrRefCount(tmp);
+	    uwideVar = (Tcl_WideUInt) w;
+	    Tcl_UpdateLinkedVar(interp, "uwide");
+	}
     } else {
 	Tcl_AppendResult(interp, "bad option \"", argv[1],
-		"\": should be create, delete, get, set, or update",
-		(char *) NULL);
+		"\": should be create, delete, get, set, or update", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -2798,17 +3258,17 @@ TestlinkCmd(dummy, interp, argc, argv)
  */
 
 static int
-TestlocaleCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestlocaleCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     int index;
     char *locale;
 
-    static CONST char *optionStrings[] = {
-    	"ctype", "numeric", "time", "collate", "monetary", 
+    static const char *optionStrings[] = {
+    	"ctype", "numeric", "time", "collate", "monetary",
 	"all",	NULL
     };
     static CONST int lcTypes[] = {
@@ -2824,7 +3284,7 @@ TestlocaleCmd(clientData, interp, objc, objv)
 	Tcl_WrongNumArgs(interp, 1, objv, "category ?locale?");
 	return TCL_ERROR;
     }
-    
+
     if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
 	    &index) != TCL_OK) {
 	return TCL_ERROR;
@@ -2861,14 +3321,14 @@ TestlocaleCmd(clientData, interp, objc, objv)
 
 	/* ARGSUSED */
 static int
-TestMathFunc(clientData, interp, args, resultPtr)
-    ClientData clientData;		/* Integer value to return. */
-    Tcl_Interp *interp;			/* Not used. */
-    Tcl_Value *args;			/* Not used. */
-    Tcl_Value *resultPtr;		/* Where to store result. */
+TestMathFunc(
+    ClientData clientData,	/* Integer value to return. */
+    Tcl_Interp *interp,		/* Not used. */
+    Tcl_Value *args,		/* Not used. */
+    Tcl_Value *resultPtr)	/* Where to store result. */
 {
     resultPtr->type = TCL_INT;
-    resultPtr->intValue = (int) clientData;
+    resultPtr->intValue = PTR2INT(clientData);
     return TCL_OK;
 }
 
@@ -2891,26 +3351,25 @@ TestMathFunc(clientData, interp, args, resultPtr)
 
 	/* ARGSUSED */
 static int
-TestMathFunc2(clientData, interp, args, resultPtr)
-    ClientData clientData;		/* Integer value to return. */
-    Tcl_Interp *interp;			/* Used to report errors. */
-    Tcl_Value *args;			/* Points to an array of two
-					 * Tcl_Value structs for the 
-					 * two arguments. */
-    Tcl_Value *resultPtr;		/* Where to store the result. */
+TestMathFunc2(
+    ClientData clientData,	/* Integer value to return. */
+    Tcl_Interp *interp,		/* Used to report errors. */
+    Tcl_Value *args,		/* Points to an array of two Tcl_Value structs
+				 * for the two arguments. */
+    Tcl_Value *resultPtr)	/* Where to store the result. */
 {
     int result = TCL_OK;
-    
+
     /*
      * Return the maximum of the two arguments with the correct type.
      */
-    
+
     if (args[0].type == TCL_INT) {
 	int i0 = args[0].intValue;
-	
+
 	if (args[1].type == TCL_INT) {
 	    int i1 = args[1].intValue;
-	    
+
 	    resultPtr->type = TCL_INT;
 	    resultPtr->intValue = ((i0 > i1)? i0 : i1);
 	} else if (args[1].type == TCL_DOUBLE) {
@@ -2931,10 +3390,10 @@ TestMathFunc2(clientData, interp, args, resultPtr)
 	}
     } else if (args[0].type == TCL_DOUBLE) {
 	double d0 = args[0].doubleValue;
-	
+
 	if (args[1].type == TCL_INT) {
 	    double d1 = args[1].intValue;
-	    
+
 	    resultPtr->type = TCL_DOUBLE;
 	    resultPtr->doubleValue = ((d0 > d1)? d0 : d1);
 	} else if (args[1].type == TCL_DOUBLE) {
@@ -2953,10 +3412,10 @@ TestMathFunc2(clientData, interp, args, resultPtr)
 	}
     } else if (args[0].type == TCL_WIDE_INT) {
 	Tcl_WideInt w0 = args[0].wideValue;
-	
+
 	if (args[1].type == TCL_INT) {
 	    Tcl_WideInt w1 = Tcl_LongAsWide(args[1].intValue);
-	    
+
 	    resultPtr->type = TCL_WIDE_INT;
 	    resultPtr->wideValue = ((w0 > w1)? w0 : w1);
 	} else if (args[1].type == TCL_DOUBLE) {
@@ -2999,9 +3458,9 @@ TestMathFunc2(clientData, interp, args, resultPtr)
  */
 	/* ARGSUSED */
 static void
-CleanupTestSetassocdataTests(clientData, interp)
-    ClientData clientData;		/* Data to be released. */
-    Tcl_Interp *interp;			/* Interpreter being deleted. */
+CleanupTestSetassocdataTests(
+    ClientData clientData,	/* Data to be released. */
+    Tcl_Interp *interp)		/* Interpreter being deleted. */
 {
     ckfree((char *) clientData);
 }
@@ -3024,11 +3483,11 @@ CleanupTestSetassocdataTests(clientData, interp)
  */
 
 static int
-TestparserObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestparserObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     char *script;
     int length, dummy;
@@ -3080,11 +3539,11 @@ TestparserObjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestexprparserObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestexprparserObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     char *script;
     int length, dummy;
@@ -3101,6 +3560,10 @@ TestexprparserObjCmd(clientData, interp, objc, objv)
     if (length == 0) {
 	length = dummy;
     }
+    parse.commentStart = NULL;
+    parse.commentSize = 0;
+    parse.commandStart = NULL;
+    parse.commandSize = 0;
     if (Tcl_ParseExpr(interp, script, length, &parse) != TCL_OK) {
 	Tcl_AddErrorInfo(interp, "\n    (remainder of expr: \"");
 	Tcl_AddErrorInfo(interp, parse.term);
@@ -3137,10 +3600,10 @@ TestexprparserObjCmd(clientData, interp, objc, objv)
  */
 
 static void
-PrintParse(interp, parsePtr)
-    Tcl_Interp *interp;		/* Interpreter whose result is to be set to
+PrintParse(
+    Tcl_Interp *interp,		/* Interpreter whose result is to be set to
 				 * the contents of a parse structure. */
-    Tcl_Parse *parsePtr;	/* Parse structure to print out. */
+    Tcl_Parse *parsePtr)	/* Parse structure to print out. */
 {
     Tcl_Obj *objPtr;
     char *typeString;
@@ -3149,56 +3612,58 @@ PrintParse(interp, parsePtr)
 
     objPtr = Tcl_GetObjResult(interp);
     if (parsePtr->commentSize > 0) {
-	Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+	Tcl_ListObjAppendElement(NULL, objPtr,
 		Tcl_NewStringObj(parsePtr->commentStart,
 			parsePtr->commentSize));
     } else {
-	Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
-		Tcl_NewStringObj("-", 1));
+	Tcl_ListObjAppendElement(NULL, objPtr, Tcl_NewStringObj("-", 1));
     }
-    Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+    Tcl_ListObjAppendElement(NULL, objPtr,
 	    Tcl_NewStringObj(parsePtr->commandStart, parsePtr->commandSize));
-    Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+    Tcl_ListObjAppendElement(NULL, objPtr,
 	    Tcl_NewIntObj(parsePtr->numWords));
     for (i = 0; i < parsePtr->numTokens; i++) {
 	tokenPtr = &parsePtr->tokenPtr[i];
 	switch (tokenPtr->type) {
-	    case TCL_TOKEN_WORD:
-		typeString = "word";
-		break;
-	    case TCL_TOKEN_SIMPLE_WORD:
-		typeString = "simple";
-		break;
-	    case TCL_TOKEN_TEXT:
-		typeString = "text";
-		break;
-	    case TCL_TOKEN_BS:
-		typeString = "backslash";
-		break;
-	    case TCL_TOKEN_COMMAND:
-		typeString = "command";
-		break;
-	    case TCL_TOKEN_VARIABLE:
-		typeString = "variable";
-		break;
-	    case TCL_TOKEN_SUB_EXPR:
-		typeString = "subexpr";
-		break;
-	    case TCL_TOKEN_OPERATOR:
-		typeString = "operator";
-		break;
-	    default:
-		typeString = "??";
-		break;
+	case TCL_TOKEN_EXPAND_WORD:
+	    typeString = "expand";
+	    break;
+	case TCL_TOKEN_WORD:
+	    typeString = "word";
+	    break;
+	case TCL_TOKEN_SIMPLE_WORD:
+	    typeString = "simple";
+	    break;
+	case TCL_TOKEN_TEXT:
+	    typeString = "text";
+	    break;
+	case TCL_TOKEN_BS:
+	    typeString = "backslash";
+	    break;
+	case TCL_TOKEN_COMMAND:
+	    typeString = "command";
+	    break;
+	case TCL_TOKEN_VARIABLE:
+	    typeString = "variable";
+	    break;
+	case TCL_TOKEN_SUB_EXPR:
+	    typeString = "subexpr";
+	    break;
+	case TCL_TOKEN_OPERATOR:
+	    typeString = "operator";
+	    break;
+	default:
+	    typeString = "??";
+	    break;
 	}
-	Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+	Tcl_ListObjAppendElement(NULL, objPtr,
 		Tcl_NewStringObj(typeString, -1));
-	Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+	Tcl_ListObjAppendElement(NULL, objPtr,
 		Tcl_NewStringObj(tokenPtr->start, tokenPtr->size));
-	Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+	Tcl_ListObjAppendElement(NULL, objPtr,
 		Tcl_NewIntObj(tokenPtr->numComponents));
     }
-    Tcl_ListObjAppendElement((Tcl_Interp *) NULL, objPtr,
+    Tcl_ListObjAppendElement(NULL, objPtr,
 	    Tcl_NewStringObj(parsePtr->commandStart + parsePtr->commandSize,
 	    -1));
 }
@@ -3221,14 +3686,13 @@ PrintParse(interp, parsePtr)
  */
 
 static int
-TestparsevarObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestparsevarObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
-    CONST char *value;
-    CONST char *name, *termPtr;
+    const char *value, *name, *termPtr;
 
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "varName");
@@ -3263,11 +3727,11 @@ TestparsevarObjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestparsevarnameObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestparsevarnameObjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     char *script;
     int append, length, dummy;
@@ -3312,10 +3776,10 @@ TestparsevarnameObjCmd(clientData, interp, objc, objv)
  *
  * TestregexpObjCmd --
  *
- *	This procedure implements the "testregexp" command. It is
- *	used to give a direct interface for regexp flags.  It's identical
- *	to Tcl_RegexpObjCmd except for the -xflags option, and the
- *	consequences thereof (including the REG_EXPECT kludge).
+ *	This procedure implements the "testregexp" command. It is used to give
+ *	a direct interface for regexp flags. It's identical to
+ *	Tcl_RegexpObjCmd except for the -xflags option, and the consequences
+ *	thereof (including the REG_EXPECT kludge).
  *
  * Results:
  *	A standard Tcl result.
@@ -3328,11 +3792,11 @@ TestparsevarnameObjCmd(clientData, interp, objc, objv)
 
 	/* ARGSUSED */
 static int
-TestregexpObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+TestregexpObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int i, ii, indices, stringLength, match, about;
     int hasxflags, cflags, eflags;
@@ -3340,11 +3804,11 @@ TestregexpObjCmd(dummy, interp, objc, objv)
     char *string;
     Tcl_Obj *objPtr;
     Tcl_RegExpInfo info;
-    static CONST char *options[] = {
+    static const char *options[] = {
 	"-indices",	"-nocase",	"-about",	"-expanded",
 	"-line",	"-linestop",	"-lineanchor",
 	"-xflags",
-	"--",		(char *) NULL
+	"--",		NULL
     };
     enum options {
 	REGEXP_INDICES, REGEXP_NOCASE,	REGEXP_ABOUT,	REGEXP_EXPANDED,
@@ -3358,7 +3822,7 @@ TestregexpObjCmd(dummy, interp, objc, objv)
     cflags = REG_ADVANCED;
     eflags = 0;
     hasxflags = 0;
-    
+
     for (i = 1; i < objc; i++) {
 	char *name;
 	int index;
@@ -3372,46 +3836,37 @@ TestregexpObjCmd(dummy, interp, objc, objv)
 	    return TCL_ERROR;
 	}
 	switch ((enum options) index) {
-	    case REGEXP_INDICES: {
-		indices = 1;
-		break;
-	    }
-	    case REGEXP_NOCASE: {
-		cflags |= REG_ICASE;
-		break;
-	    }
-	    case REGEXP_ABOUT: {
-		about = 1;
-		break;
-	    }
-	    case REGEXP_EXPANDED: {
-		cflags |= REG_EXPANDED;
-		break;
-	    }
-	    case REGEXP_MULTI: {
-		cflags |= REG_NEWLINE;
-		break;
-	    }
-	    case REGEXP_NOCROSS: {
-		cflags |= REG_NLSTOP;
-		break;
-	    }
-	    case REGEXP_NEWL: {
-		cflags |= REG_NLANCH;
-		break;
-	    }
-	    case REGEXP_XFLAGS: {
-		hasxflags = 1;
-		break;
-	    }
-	    case REGEXP_LAST: {
-		i++;
-		goto endOfForLoop;
-	    }
+	case REGEXP_INDICES:
+	    indices = 1;
+	    break;
+	case REGEXP_NOCASE:
+	    cflags |= REG_ICASE;
+	    break;
+	case REGEXP_ABOUT:
+	    about = 1;
+	    break;
+	case REGEXP_EXPANDED:
+	    cflags |= REG_EXPANDED;
+	    break;
+	case REGEXP_MULTI:
+	    cflags |= REG_NEWLINE;
+	    break;
+	case REGEXP_NOCROSS:
+	    cflags |= REG_NLSTOP;
+	    break;
+	case REGEXP_NEWL:
+	    cflags |= REG_NLANCH;
+	    break;
+	case REGEXP_XFLAGS:
+	    hasxflags = 1;
+	    break;
+	case REGEXP_LAST:
+	    i++;
+	    goto endOfForLoop;
 	}
     }
 
-    endOfForLoop:
+  endOfForLoop:
     if (objc - i < hasxflags + 2 - about) {
 	Tcl_WrongNumArgs(interp, 1, objv,
 		"?switches? exp string ?matchVar? ?subMatchVar subMatchVar ...?");
@@ -3431,7 +3886,6 @@ TestregexpObjCmd(dummy, interp, objc, objv)
     if (regExpr == NULL) {
 	return TCL_ERROR;
     }
-    objPtr = objv[1];
 
     if (about) {
 	if (TclRegAbout(interp, regExpr) < 0) {
@@ -3440,6 +3894,7 @@ TestregexpObjCmd(dummy, interp, objc, objv)
 	return TCL_OK;
     }
 
+    objPtr = objv[1];
     match = Tcl_RegExpExecObj(interp, regExpr, objPtr, 0 /* offset */,
 	    objc-2 /* nmatches */, eflags);
 
@@ -3449,13 +3904,13 @@ TestregexpObjCmd(dummy, interp, objc, objv)
     if (match == 0) {
 	/*
 	 * Set the interpreter's object result to an integer object w/
-	 * value 0. 
+	 * value 0.
 	 */
-	
+
 	Tcl_SetIntObj(Tcl_GetObjResult(interp), 0);
 	if (objc > 2 && (cflags&REG_EXPECT) && indices) {
 	    char *varName;
-	    CONST char *value;
+	    const char *value;
 	    int start, end;
 	    char resinfo[TCL_INTEGER_SPACE * 2];
 
@@ -3465,12 +3920,12 @@ TestregexpObjCmd(dummy, interp, objc, objv)
 	    value = Tcl_SetVar(interp, varName, resinfo, 0);
 	    if (value == NULL) {
 		Tcl_AppendResult(interp, "couldn't set variable \"",
-			varName, "\"", (char *) NULL);
+			varName, "\"", NULL);
 		return TCL_ERROR;
 	    }
 	} else if (cflags & TCL_REG_CANMATCH) {
 	    char *varName;
-	    CONST char *value;
+	    const char *value;
 	    char resinfo[TCL_INTEGER_SPACE * 2];
 
 	    Tcl_RegExpGetInfo(regExpr, &info);
@@ -3479,7 +3934,7 @@ TestregexpObjCmd(dummy, interp, objc, objv)
 	    value = Tcl_SetVar(interp, varName, resinfo, 0);
 	    if (value == NULL) {
 		Tcl_AppendResult(interp, "couldn't set variable \"",
-			varName, "\"", (char *) NULL);
+			varName, "\"", NULL);
 		return TCL_ERROR;
 	    }
 	}
@@ -3498,7 +3953,7 @@ TestregexpObjCmd(dummy, interp, objc, objv)
     for (i = 0; i < objc; i++) {
 	int start, end;
 	Tcl_Obj *newPtr, *varPtr, *valuePtr;
-	
+
 	varPtr = objv[i];
 	ii = ((cflags&REG_EXPECT) && i == objc-1) ? -1 : i;
 	if (indices) {
@@ -3515,10 +3970,10 @@ TestregexpObjCmd(dummy, interp, objc, objv)
 	    }
 
 	    /*
-	     * Adjust index so it refers to the last character in the
-	     * match instead of the first character after the match.
+	     * Adjust index so it refers to the last character in the match
+	     * instead of the first character after the match.
 	     */
-	    
+
 	    if (end >= 0) {
 		end--;
 	    }
@@ -3538,20 +3993,18 @@ TestregexpObjCmd(dummy, interp, objc, objv)
 			info.matches[ii].end - 1);
 	    }
 	}
-	Tcl_IncrRefCount(newPtr);
 	valuePtr = Tcl_ObjSetVar2(interp, varPtr, NULL, newPtr, 0);
-	Tcl_DecrRefCount(newPtr);
 	if (valuePtr == NULL) {
 	    Tcl_AppendResult(interp, "couldn't set variable \"",
-		    Tcl_GetString(varPtr), "\"", (char *) NULL);
+		    Tcl_GetString(varPtr), "\"", NULL);
 	    return TCL_ERROR;
 	}
     }
 
     /*
-     * Set the interpreter's object result to an integer object w/ value 1. 
+     * Set the interpreter's object result to an integer object w/ value 1.
      */
-	
+
     Tcl_SetIntObj(Tcl_GetObjResult(interp), 1);
     return TCL_OK;
 }
@@ -3574,86 +4027,68 @@ TestregexpObjCmd(dummy, interp, objc, objv)
  */
 
 static void
-TestregexpXflags(string, length, cflagsPtr, eflagsPtr)
-    char *string;		/* The string of flags. */
-    int length;			/* The length of the string in bytes. */
-    int *cflagsPtr;		/* compile flags word */
-    int *eflagsPtr;		/* exec flags word */
+TestregexpXflags(
+    char *string,		/* The string of flags. */
+    int length,			/* The length of the string in bytes. */
+    int *cflagsPtr,		/* compile flags word */
+    int *eflagsPtr)		/* exec flags word */
 {
-    int i;
-    int cflags;
-    int eflags;
+    int i, cflags, eflags;
 
     cflags = *cflagsPtr;
     eflags = *eflagsPtr;
     for (i = 0; i < length; i++) {
 	switch (string[i]) {
-	    case 'a': {
-		cflags |= REG_ADVF;
-		break;
-	    }
-	    case 'b': {
-		cflags &= ~REG_ADVANCED;
-		break;
-	    }
-	    case 'c': {
-		cflags |= TCL_REG_CANMATCH;
-		break;
-	    }
-	    case 'e': {
-		cflags &= ~REG_ADVANCED;
-		cflags |= REG_EXTENDED;
-		break;
-	    }
-	    case 'q': {
-		cflags &= ~REG_ADVANCED;
-		cflags |= REG_QUOTE;
-		break;
-	    }
-	    case 'o': {			/* o for opaque */
-		cflags |= REG_NOSUB;
-		break;
-	    }
-	    case 's': {			/* s for start */
-		cflags |= REG_BOSONLY;
-		break;
-	    }
-	    case '+': {
-		cflags |= REG_FAKE;
-		break;
-	    }
-	    case ',': {
-		cflags |= REG_PROGRESS;
-		break;
-	    }
-	    case '.': {
-		cflags |= REG_DUMP;
-		break;
-	    }
-	    case ':': {
-		eflags |= REG_MTRACE;
-		break;
-	    }
-	    case ';': {
-		eflags |= REG_FTRACE;
-		break;
-	    }
-	    case '^': {
-		eflags |= REG_NOTBOL;
-		break;
-	    }
-	    case '$': {
-		eflags |= REG_NOTEOL;
-		break;
-	    }
-	    case 't': {
-		cflags |= REG_EXPECT;
-		break;
-	    }
-	    case '%': {
-		eflags |= REG_SMALL;
-		break;
-	    }
+	case 'a':
+	    cflags |= REG_ADVF;
+	    break;
+	case 'b':
+	    cflags &= ~REG_ADVANCED;
+	    break;
+	case 'c':
+	    cflags |= TCL_REG_CANMATCH;
+	    break;
+	case 'e':
+	    cflags &= ~REG_ADVANCED;
+	    cflags |= REG_EXTENDED;
+	    break;
+	case 'q':
+	    cflags &= ~REG_ADVANCED;
+	    cflags |= REG_QUOTE;
+	    break;
+	case 'o':			/* o for opaque */
+	    cflags |= REG_NOSUB;
+	    break;
+	case 's':			/* s for start */
+	    cflags |= REG_BOSONLY;
+	    break;
+	case '+':
+	    cflags |= REG_FAKE;
+	    break;
+	case ',':
+	    cflags |= REG_PROGRESS;
+	    break;
+	case '.':
+	    cflags |= REG_DUMP;
+	    break;
+	case ':':
+	    eflags |= REG_MTRACE;
+	    break;
+	case ';':
+	    eflags |= REG_FTRACE;
+	    break;
+	case '^':
+	    eflags |= REG_NOTBOL;
+	    break;
+	case '$':
+	    eflags |= REG_NOTEOL;
+	    break;
+	case 't':
+	    cflags |= REG_EXPECT;
+	    break;
+	case '%':
+	    eflags |= REG_SMALL;
+	    break;
 	}
     }
 
@@ -3664,6 +4099,37 @@ TestregexpXflags(string, length, cflagsPtr, eflagsPtr)
 /*
  *----------------------------------------------------------------------
  *
+ * TestreturnObjCmd --
+ *
+ *	This procedure implements the "testreturn" command. It is
+ *	used to verify that a
+ *		return TCL_RETURN;
+ *	has same behavior as
+ *		return Tcl_SetReturnOptions(interp, Tcl_NewObj());
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+TestreturnObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    return TCL_RETURN;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TestsetassocdataCmd --
  *
  *	This procedure implements the "testsetassocdata" command. It is used
@@ -3680,20 +4146,19 @@ TestregexpXflags(string, length, cflagsPtr, eflagsPtr)
  */
 
 static int
-TestsetassocdataCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
-{
-    char *buf;
-    char *oldData;
+TestsetassocdataCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    char *buf, *oldData;
     Tcl_InterpDeleteProc *procPtr;
-    
+
     if (argc != 3) {
-        Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-                " data_key data_item\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" data_key data_item\"", NULL);
+	return TCL_ERROR;
     }
 
     buf = ckalloc((unsigned) strlen(argv[2]) + 1);
@@ -3708,8 +4173,8 @@ TestsetassocdataCmd(clientData, interp, argc, argv)
     if ((oldData != NULL) && (procPtr == CleanupTestSetassocdataTests)) {
 	ckfree(oldData);
     }
-    
-    Tcl_SetAssocData(interp, argv[1], CleanupTestSetassocdataTests, 
+
+    Tcl_SetAssocData(interp, argv[1], CleanupTestSetassocdataTests,
 	(ClientData) buf);
     return TCL_OK;
 }
@@ -3733,25 +4198,21 @@ TestsetassocdataCmd(clientData, interp, argc, argv)
  */
 
 static int
-TestsetplatformCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestsetplatformCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     size_t length;
     TclPlatformType *platform;
 
-#if defined(__WIN32__) || defined(__CYGWIN__)
-    platform = TclWinGetPlatform();
-#else
-    platform = &tclPlatform;
-#endif
-    
+    platform = TclGetPlatform();
+
     if (argc != 2) {
-        Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
-                " platform\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
+		" platform\"", NULL);
+	return TCL_ERROR;
     }
 
     length = strlen(argv[1]);
@@ -3760,8 +4221,8 @@ TestsetplatformCmd(clientData, interp, argc, argv)
     } else if (strncmp(argv[1], "windows", length) == 0) {
 	*platform = TCL_PLATFORM_WINDOWS;
     } else {
-        Tcl_AppendResult(interp, "unsupported platform: should be one of ",
-		"unix, mac, or windows", (char *) NULL);
+	Tcl_AppendResult(interp, "unsupported platform: should be one of "
+		"unix, or windows", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -3786,17 +4247,17 @@ TestsetplatformCmd(clientData, interp, argc, argv)
  */
 
 static int
-TeststaticpkgCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TeststaticpkgCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     int safe, loaded;
 
     if (argc != 4) {
 	Tcl_AppendResult(interp, "wrong # arguments: should be \"",
-		argv[0], " pkgName safe loaded\"", (char *) NULL);
+		argv[0], " pkgName safe loaded\"", NULL);
 	return TCL_ERROR;
     }
     if (Tcl_GetInt(interp, argv[2], &safe) != TCL_OK) {
@@ -3811,9 +4272,9 @@ TeststaticpkgCmd(dummy, interp, argc, argv)
 }
 
 static int
-StaticInitProc(interp)
-    Tcl_Interp *interp;			/* Interpreter in which package
-					 * is supposedly being loaded. */
+StaticInitProc(
+    Tcl_Interp *interp)		/* Interpreter in which package is supposedly
+				 * being loaded. */
 {
     Tcl_SetVar(interp, "x", "loaded", TCL_GLOBAL_ONLY);
     return TCL_OK;
@@ -3837,18 +4298,18 @@ StaticInitProc(interp)
  */
 
 static int
-TesttranslatefilenameCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TesttranslatefilenameCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_DString buffer;
-    CONST char *result;
+    const char *result;
 
     if (argc != 2) {
 	Tcl_AppendResult(interp, "wrong # arguments: should be \"",
-		argv[0], " path\"", (char *) NULL);
+		argv[0], " path\"", NULL);
 	return TCL_ERROR;
     }
     result = Tcl_TranslateFileName(interp, argv[1], &buffer);
@@ -3879,17 +4340,17 @@ TesttranslatefilenameCmd(dummy, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestupvarCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestupvarCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     int flags = 0;
-    
+
     if ((argc != 5) && (argc != 6)) {
 	Tcl_AppendResult(interp, "wrong # arguments: should be \"",
-		argv[0], " level name ?name2? dest global\"", (char *) NULL);
+		argv[0], " level name ?name2? dest global\"", NULL);
 	return TCL_ERROR;
     }
 
@@ -3906,8 +4367,8 @@ TestupvarCmd(dummy, interp, argc, argv)
 	} else if (strcmp(argv[5], "namespace") == 0) {
 	    flags = TCL_NAMESPACE_ONLY;
 	}
-	return Tcl_UpVar2(interp, argv[1], argv[2], 
-		(argv[3][0] == 0) ? (char *) NULL : argv[3], argv[4],
+	return Tcl_UpVar2(interp, argv[1], argv[2],
+		(argv[3][0] == 0) ? NULL : argv[3], argv[4],
 		flags);
     }
 }
@@ -3917,9 +4378,8 @@ TestupvarCmd(dummy, interp, argc, argv)
  *
  * TestseterrorcodeCmd --
  *
- *	This procedure implements the "testseterrorcodeCmd".
- *	This tests up to five elements passed to the
- *	Tcl_SetErrorCode command.
+ *	This procedure implements the "testseterrorcodeCmd".  This tests up to
+ *	five elements passed to the Tcl_SetErrorCode command.
  *
  * Results:
  *	A standard Tcl result. Always returns TCL_ERROR so that
@@ -3933,11 +4393,11 @@ TestupvarCmd(dummy, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestseterrorcodeCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestseterrorcodeCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     if (argc > 6) {
 	Tcl_SetResult(interp, "too many args", TCL_STATIC);
@@ -3968,22 +4428,13 @@ TestseterrorcodeCmd(dummy, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestsetobjerrorcodeCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestsetobjerrorcodeCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
-    Tcl_Obj *listObjPtr;
-
-    if (objc > 1) {
-	listObjPtr = Tcl_ConcatObj(objc - 1, objv + 1);
-    } else {
-	listObjPtr = Tcl_NewObj();
-    }
-    Tcl_IncrRefCount(listObjPtr);
-    Tcl_SetObjErrorCode(interp, listObjPtr);
-    Tcl_DecrRefCount(listObjPtr);
+    Tcl_SetObjErrorCode(interp, Tcl_ConcatObj(objc - 1, objv + 1));
     return TCL_ERROR;
 }
 
@@ -4006,11 +4457,11 @@ TestsetobjerrorcodeCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 static int
-TestfeventCmd(clientData, interp, argc, argv)
-    ClientData clientData;		/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestfeventCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     static Tcl_Interp *interp2 = NULL;
     int code;
@@ -4018,46 +4469,46 @@ TestfeventCmd(clientData, interp, argc, argv)
 
     if (argc < 2) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		" option ?arg arg ...?", (char *) NULL);
+		" option ?arg arg ...?", NULL);
 	return TCL_ERROR;
     }
     if (strcmp(argv[1], "cmd") == 0) {
 	if (argc != 3) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		    " cmd script", (char *) NULL);
+		    " cmd script", NULL);
 	    return TCL_ERROR;
 	}
-        if (interp2 != (Tcl_Interp *) NULL) {
-            code = Tcl_GlobalEval(interp2, argv[2]);
+	if (interp2 != NULL) {
+	    code = Tcl_GlobalEval(interp2, argv[2]);
 	    Tcl_SetObjResult(interp, Tcl_GetObjResult(interp2));
-            return code;
-        } else {
-            Tcl_AppendResult(interp,
-                    "called \"testfevent code\" before \"testfevent create\"",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
+	    return code;
+	} else {
+	    Tcl_AppendResult(interp,
+		    "called \"testfevent code\" before \"testfevent create\"",
+		    NULL);
+	    return TCL_ERROR;
+	}
     } else if (strcmp(argv[1], "create") == 0) {
 	if (interp2 != NULL) {
-            Tcl_DeleteInterp(interp2);
+	    Tcl_DeleteInterp(interp2);
 	}
-        interp2 = Tcl_CreateInterp();
+	interp2 = Tcl_CreateInterp();
 	return Tcl_Init(interp2);
     } else if (strcmp(argv[1], "delete") == 0) {
 	if (interp2 != NULL) {
-            Tcl_DeleteInterp(interp2);
+	    Tcl_DeleteInterp(interp2);
 	}
 	interp2 = NULL;
     } else if (strcmp(argv[1], "share") == 0) {
-        if (interp2 != NULL) {
-            chan = Tcl_GetChannel(interp, argv[2], NULL);
-            if (chan == (Tcl_Channel) NULL) {
-                return TCL_ERROR;
-            }
-            Tcl_RegisterChannel(interp2, chan);
-        }
+	if (interp2 != NULL) {
+	    chan = Tcl_GetChannel(interp, argv[2], NULL);
+	    if (chan == (Tcl_Channel) NULL) {
+		return TCL_ERROR;
+	    }
+	    Tcl_RegisterChannel(interp2, chan);
+	}
     }
-    
+
     return TCL_OK;
 }
 
@@ -4069,7 +4520,7 @@ TestfeventCmd(clientData, interp, argc, argv)
  *	Calls the panic routine.
  *
  * Results:
- *      Always returns TCL_OK. 
+ *	Always returns TCL_OK.
  *
  * Side effects:
  *	May exit application.
@@ -4078,37 +4529,37 @@ TestfeventCmd(clientData, interp, argc, argv)
  */
 
 static int
-TestpanicCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
-{
-    CONST char *argString;
-    
+TestpanicCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    const char *argString;
+
     /*
      *  Put the arguments into a var args structure
      *  Append all of the arguments together separated by spaces
      */
 
     argString = Tcl_Merge(argc-1, argv+1);
-    panic(argString);
+    Tcl_Panic("%s", argString);
     ckfree((char *)argString);
- 
+
     return TCL_OK;
 }
-
+
 static int
-TestfileCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;			/* Number of arguments. */
-    Tcl_Obj *CONST argv[];	/* The argument objects. */
+TestfileCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    Tcl_Obj *const argv[])	/* The argument objects. */
 {
     int force, i, j, result;
     Tcl_Obj *error = NULL;
     char *subcmd;
-    
+
     if (argc < 3) {
 	return TCL_ERROR;
     }
@@ -4116,7 +4567,7 @@ TestfileCmd(dummy, interp, argc, argv)
     force = 0;
     i = 2;
     if (strcmp(Tcl_GetString(argv[2]), "-force") == 0) {
-        force = 1;
+	force = 1;
 	i = 3;
     }
 
@@ -4125,30 +4576,30 @@ TestfileCmd(dummy, interp, argc, argv)
     }
 
     for (j = i; j < argc; j++) {
-        if (Tcl_FSGetNormalizedPath(interp, argv[j]) == NULL) {
+	if (Tcl_FSGetNormalizedPath(interp, argv[j]) == NULL) {
 	    return TCL_ERROR;
 	}
     }
 
     subcmd = Tcl_GetString(argv[1]);
-    
+
     if (strcmp(subcmd, "mv") == 0) {
 	result = TclpObjRenameFile(argv[i], argv[i + 1]);
     } else if (strcmp(subcmd, "cp") == 0) {
-        result = TclpObjCopyFile(argv[i], argv[i + 1]);
+	result = TclpObjCopyFile(argv[i], argv[i + 1]);
     } else if (strcmp(subcmd, "rm") == 0) {
-        result = TclpObjDeleteFile(argv[i]);
+	result = TclpObjDeleteFile(argv[i]);
     } else if (strcmp(subcmd, "mkdir") == 0) {
-        result = TclpObjCreateDirectory(argv[i]);
+	result = TclpObjCreateDirectory(argv[i]);
     } else if (strcmp(subcmd, "cpdir") == 0) {
-        result = TclpObjCopyDirectory(argv[i], argv[i + 1], &error);
+	result = TclpObjCopyDirectory(argv[i], argv[i + 1], &error);
     } else if (strcmp(subcmd, "rmdir") == 0) {
-        result = TclpObjRemoveDirectory(argv[i], force, &error);
+	result = TclpObjRemoveDirectory(argv[i], force, &error);
     } else {
-        result = TCL_ERROR;
+	result = TCL_ERROR;
 	goto end;
     }
-	
+
     if (result != TCL_OK) {
 	if (error != NULL) {
 	    if (Tcl_GetString(error)[0] != '\0') {
@@ -4156,11 +4607,10 @@ TestfileCmd(dummy, interp, argc, argv)
 	    }
 	    Tcl_DecrRefCount(error);
 	}
-	Tcl_AppendResult(interp, Tcl_ErrnoId(), (char *) NULL);
+	Tcl_AppendResult(interp, Tcl_ErrnoId(), NULL);
     }
 
-    end:
-
+  end:
     return result;
 }
 
@@ -4182,24 +4632,24 @@ TestfileCmd(dummy, interp, argc, argv)
  */
 
 static int
-TestgetvarfullnameCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestgetvarfullnameCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     char *name, *arg;
     int flags = 0;
     Tcl_Namespace *namespacePtr;
-    Tcl_CallFrame frame;
+    Tcl_CallFrame *framePtr;
     Tcl_Var variable;
     int result;
 
     if (objc != 3) {
 	Tcl_WrongNumArgs(interp, 1, objv, "name scope");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
-    
+
     name = Tcl_GetString(objv[1]);
 
     arg = Tcl_GetString(objv[2]);
@@ -4210,30 +4660,29 @@ TestgetvarfullnameCmd(dummy, interp, objc, objv)
     }
 
     /*
-     * This command, like any other created with Tcl_Create[Obj]Command,
-     * runs in the global namespace. As a "namespace-aware" command that
-     * needs to run in a particular namespace, it must activate that
-     * namespace itself.
+     * This command, like any other created with Tcl_Create[Obj]Command, runs
+     * in the global namespace. As a "namespace-aware" command that needs to
+     * run in a particular namespace, it must activate that namespace itself.
      */
 
     if (flags == TCL_NAMESPACE_ONLY) {
-	namespacePtr = Tcl_FindNamespace(interp, "::test_ns_var",
-	        (Tcl_Namespace *) NULL, TCL_LEAVE_ERR_MSG);
+	namespacePtr = Tcl_FindNamespace(interp, "::test_ns_var", NULL,
+		TCL_LEAVE_ERR_MSG);
 	if (namespacePtr == NULL) {
 	    return TCL_ERROR;
 	}
-	result = Tcl_PushCallFrame(interp, &frame, namespacePtr,
-                /*isProcCallFrame*/ 0);
+	result = TclPushStackFrame(interp, &framePtr, namespacePtr,
+		/*isProcCallFrame*/ 0);
 	if (result != TCL_OK) {
 	    return result;
 	}
     }
-    
-    variable = Tcl_FindNamespaceVar(interp, name, (Tcl_Namespace *) NULL,
+
+    variable = Tcl_FindNamespaceVar(interp, name, NULL,
 	    (flags | TCL_LEAVE_ERR_MSG));
 
     if (flags == TCL_NAMESPACE_ONLY) {
-	Tcl_PopCallFrame(interp);
+	TclPopStackFrame(interp);
     }
     if (variable == (Tcl_Var) NULL) {
 	return TCL_ERROR;
@@ -4247,10 +4696,9 @@ TestgetvarfullnameCmd(dummy, interp, objc, objv)
  *
  * GetTimesCmd --
  *
- *	This procedure implements the "gettimes" command.  It is
- *	used for computing the time needed for various basic operations
- *	such as reading variables, allocating memory, sprintf, converting
- *	variables, etc.
+ *	This procedure implements the "gettimes" command.  It is used for
+ *	computing the time needed for various basic operations such as reading
+ *	variables, allocating memory, sprintf, converting variables, etc.
  *
  * Results:
  *	A standard Tcl result.
@@ -4262,19 +4710,18 @@ TestgetvarfullnameCmd(dummy, interp, objc, objv)
  */
 
 static int
-GetTimesCmd(unused, interp, argc, argv)
-    ClientData unused;		/* Unused. */
-    Tcl_Interp *interp;		/* The current interpreter. */
-    int argc;			/* The number of arguments. */
-    CONST char **argv;		/* The argument strings. */
+GetTimesCmd(
+    ClientData unused,		/* Unused. */
+    Tcl_Interp *interp,		/* The current interpreter. */
+    int argc,			/* The number of arguments. */
+    const char **argv)		/* The argument strings. */
 {
     Interp *iPtr = (Interp *) interp;
     int i, n;
     double timePer;
     Tcl_Time start, stop;
-    Tcl_Obj *objPtr;
-    Tcl_Obj **objv;
-    CONST char *s;
+    Tcl_Obj *objPtr, **objv;
+    const char *s;
     char newString[TCL_INTEGER_SPACE];
 
     /* alloc & free 100000 times */
@@ -4287,7 +4734,7 @@ GetTimesCmd(unused, interp, argc, argv)
     Tcl_GetTime(&stop);
     timePer = (stop.sec - start.sec)*1000000 + (stop.usec - start.usec);
     fprintf(stderr, "   %.3f usec per alloc+free\n", timePer/100000);
-    
+
     /* alloc 5000 times */
     fprintf(stderr, "alloc 5000 6 word items\n");
     objv = (Tcl_Obj **) ckalloc(5000 * sizeof(Tcl_Obj *));
@@ -4298,7 +4745,7 @@ GetTimesCmd(unused, interp, argc, argv)
     Tcl_GetTime(&stop);
     timePer = (stop.sec - start.sec)*1000000 + (stop.usec - start.usec);
     fprintf(stderr, "   %.3f usec per alloc\n", timePer/5000);
-    
+
     /* free 5000 times */
     fprintf(stderr, "free 5000 6 word items\n");
     Tcl_GetTime(&start);
@@ -4318,7 +4765,7 @@ GetTimesCmd(unused, interp, argc, argv)
     Tcl_GetTime(&stop);
     timePer = (stop.sec - start.sec)*1000000 + (stop.usec - start.usec);
     fprintf(stderr, "   %.3f usec per Tcl_NewObj\n", timePer/5000);
-    
+
     /* Tcl_DecrRefCount 5000 times */
     fprintf(stderr, "Tcl_DecrRefCount 5000 times\n");
     Tcl_GetTime(&start);
@@ -4356,7 +4803,7 @@ GetTimesCmd(unused, interp, argc, argv)
     fprintf(stderr, "   %.3f usec per Tcl_GetIntFromObj of \"12345\"\n",
 	    timePer/100000);
     Tcl_DecrRefCount(objPtr);
-    
+
     /* Tcl_GetInt 100000 times */
     fprintf(stderr, "Tcl_GetInt of \"12345\" 100000 times\n");
     Tcl_GetTime(&start);
@@ -4419,7 +4866,7 @@ GetTimesCmd(unused, interp, argc, argv)
     timePer = (stop.sec - start.sec)*1000000 + (stop.usec - start.usec);
     fprintf(stderr, "   %.3f usec per Tcl_GetVar of a==\"12345\"\n",
 	    timePer/100000);
-    
+
     Tcl_ResetResult(interp);
     return TCL_OK;
 }
@@ -4442,11 +4889,11 @@ GetTimesCmd(unused, interp, argc, argv)
  */
 
 static int
-NoopCmd(unused, interp, argc, argv)
-    ClientData unused;		/* Unused. */
-    Tcl_Interp *interp;		/* The current interpreter. */
-    int argc;			/* The number of arguments. */
-    CONST char **argv;		/* The argument strings. */
+NoopCmd(
+    ClientData unused,		/* Unused. */
+    Tcl_Interp *interp,		/* The current interpreter. */
+    int argc,			/* The number of arguments. */
+    const char **argv)		/* The argument strings. */
 {
     return TCL_OK;
 }
@@ -4469,11 +4916,11 @@ NoopCmd(unused, interp, argc, argv)
  */
 
 static int
-NoopObjCmd(unused, interp, objc, objv)
-    ClientData unused;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+NoopObjCmd(
+    ClientData unused,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     return TCL_OK;
 }
@@ -4497,34 +4944,66 @@ NoopObjCmd(unused, interp, objc, objv)
 
 	/* ARGSUSED */
 static int
-TestsetCmd(data, interp, argc, argv)
-    ClientData data;			/* Additional flags for Get/SetVar2. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestsetCmd(
+    ClientData data,		/* Additional flags for Get/SetVar2. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
-    int flags = (int) data;
-    CONST char *value;
+    int flags = PTR2INT(data);
+    const char *value;
 
     if (argc == 2) {
-        Tcl_SetResult(interp, "before get", TCL_STATIC);
-	value = Tcl_GetVar2(interp, argv[1], (char *) NULL, flags);
-        if (value == NULL) {
-            return TCL_ERROR;
-        }
+	Tcl_SetResult(interp, "before get", TCL_STATIC);
+	value = Tcl_GetVar2(interp, argv[1], NULL, flags);
+	if (value == NULL) {
+	    return TCL_ERROR;
+	}
 	Tcl_AppendElement(interp, value);
-        return TCL_OK;
+	return TCL_OK;
     } else if (argc == 3) {
 	Tcl_SetResult(interp, "before set", TCL_STATIC);
-        value = Tcl_SetVar2(interp, argv[1], (char *) NULL, argv[2], flags);
-        if (value == NULL) {
-            return TCL_ERROR;
-        }
+	value = Tcl_SetVar2(interp, argv[1], NULL, argv[2], flags);
+	if (value == NULL) {
+	    return TCL_ERROR;
+	}
 	Tcl_AppendElement(interp, value);
 	return TCL_OK;
     } else {
 	Tcl_AppendResult(interp, "wrong # args: should be \"",
-		argv[0], " varName ?newValue?\"", (char *) NULL);
+		argv[0], " varName ?newValue?\"", NULL);
+	return TCL_ERROR;
+    }
+}
+static int
+Testset2Cmd(
+    ClientData data,		/* Additional flags for Get/SetVar2. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    int flags = PTR2INT(data);
+    const char *value;
+
+    if (argc == 3) {
+	Tcl_SetResult(interp, "before get", TCL_STATIC);
+	value = Tcl_GetVar2(interp, argv[1], argv[2], flags);
+	if (value == NULL) {
+	    return TCL_ERROR;
+	}
+	Tcl_AppendElement(interp, value);
+	return TCL_OK;
+    } else if (argc == 4) {
+	Tcl_SetResult(interp, "before set", TCL_STATIC);
+	value = Tcl_SetVar2(interp, argv[1], argv[2], argv[3], flags);
+	if (value == NULL) {
+	    return TCL_ERROR;
+	}
+	Tcl_AppendElement(interp, value);
+	return TCL_OK;
+    } else {
+	Tcl_AppendResult(interp, "wrong # args: should be \"",
+		argv[0], " varName elemName ?newValue?\"", NULL);
 	return TCL_ERROR;
     }
 }
@@ -4534,9 +5013,8 @@ TestsetCmd(data, interp, argc, argv)
  *
  * TestsaveresultCmd --
  *
- *	Implements the "testsaveresult" cmd that is used when testing
- *	the Tcl_SaveResult, Tcl_RestoreResult, and
- *	Tcl_DiscardResult interfaces.
+ *	Implements the "testsaveresult" cmd that is used when testing the
+ *	Tcl_SaveResult, Tcl_RestoreResult, and Tcl_DiscardResult interfaces.
  *
  * Results:
  *	A standard Tcl result.
@@ -4549,16 +5027,16 @@ TestsetCmd(data, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestsaveresultCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* The argument objects. */
+TestsaveresultCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* The argument objects. */
 {
     int discard, result, index;
     Tcl_SavedResult state;
     Tcl_Obj *objPtr;
-    static CONST char *optionStrings[] = {
+    static const char *optionStrings[] = {
 	"append", "dynamic", "free", "object", "small", NULL
     };
     enum options {
@@ -4571,7 +5049,7 @@ TestsaveresultCmd(dummy, interp, objc, objv)
 
     if (objc != 4) {
 	Tcl_WrongNumArgs(interp, 1, objv, "type script discard");
-        return TCL_ERROR;
+	return TCL_ERROR;
     }
     if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
 	    &index) != TCL_OK) {
@@ -4583,25 +5061,26 @@ TestsaveresultCmd(dummy, interp, objc, objv)
 
     objPtr = NULL;		/* Lint. */
     switch ((enum options) index) {
-	case RESULT_SMALL:
-	    Tcl_SetResult(interp, "small result", TCL_VOLATILE);
-	    break;
-	case RESULT_APPEND:
-	    Tcl_AppendResult(interp, "append result", NULL);
-	    break;
-	case RESULT_FREE: {
-	    char *buf = ckalloc(200);
-	    strcpy(buf, "free result");
-	    Tcl_SetResult(interp, buf, TCL_DYNAMIC);
-	    break;
-	}
-	case RESULT_DYNAMIC:
-	    Tcl_SetResult(interp, "dynamic result", TestsaveresultFree);
-	    break;
-	case RESULT_OBJECT:
-	    objPtr = Tcl_NewStringObj("object result", -1);
-	    Tcl_SetObjResult(interp, objPtr);
-	    break;
+    case RESULT_SMALL:
+	Tcl_SetResult(interp, "small result", TCL_VOLATILE);
+	break;
+    case RESULT_APPEND:
+	Tcl_AppendResult(interp, "append result", NULL);
+	break;
+    case RESULT_FREE: {
+	char *buf = ckalloc(200);
+
+	strcpy(buf, "free result");
+	Tcl_SetResult(interp, buf, TCL_DYNAMIC);
+	break;
+    }
+    case RESULT_DYNAMIC:
+	Tcl_SetResult(interp, "dynamic result", TestsaveresultFree);
+	break;
+    case RESULT_OBJECT:
+	objPtr = Tcl_NewStringObj("object result", -1);
+	Tcl_SetObjResult(interp, objPtr);
+	break;
     }
 
     freeCount = 0;
@@ -4621,19 +5100,20 @@ TestsaveresultCmd(dummy, interp, objc, objv)
     }
 
     switch ((enum options) index) {
-	case RESULT_DYNAMIC: {
-	    int present = interp->freeProc == TestsaveresultFree;
-	    int called = freeCount;
-	    Tcl_AppendElement(interp, called ? "called" : "notCalled");
-	    Tcl_AppendElement(interp, present ? "present" : "missing");
-	    break;
-	}
-	case RESULT_OBJECT:
-	    Tcl_AppendElement(interp, Tcl_GetObjResult(interp) == objPtr
-		    ? "same" : "different");
-	    break;
-	default:
-	    break;
+    case RESULT_DYNAMIC: {
+	int present = interp->freeProc == TestsaveresultFree;
+	int called = freeCount;
+
+	Tcl_AppendElement(interp, called ? "called" : "notCalled");
+	Tcl_AppendElement(interp, present ? "present" : "missing");
+	break;
+    }
+    case RESULT_OBJECT:
+	Tcl_AppendElement(interp, Tcl_GetObjResult(interp) == objPtr
+		? "same" : "different");
+	break;
+    default:
+	break;
     }
     return result;
 }
@@ -4655,11 +5135,12 @@ TestsaveresultCmd(dummy, interp, objc, objv)
  */
 
 static void
-TestsaveresultFree(blockPtr)
-    char *blockPtr;
+TestsaveresultFree(
+    char *blockPtr)
 {
     freeCount++;
 }
+#ifdef USE_OBSOLETE_FS_HOOKS
 
 /*
  *----------------------------------------------------------------------
@@ -4679,18 +5160,18 @@ TestsaveresultFree(blockPtr)
  */
 
 static int
-TeststatprocCmd (dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TeststatprocCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     TclStatProc_ *proc;
     int retVal;
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"",
-		argv[0], " option arg\"", (char *) NULL);
+		argv[0], " option arg\"", NULL);
 	return TCL_ERROR;
     }
 
@@ -4703,41 +5184,40 @@ TeststatprocCmd (dummy, interp, argc, argv)
     } else if (strcmp(argv[2], "TestStatProc3") == 0) {
 	proc = TestStatProc3;
     } else {
-	Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": ",
-		"must be TclpStat, ",
-		"TestStatProc1, TestStatProc2, or TestStatProc3",
-		(char *) NULL);
+	Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": "
+		"must be TclpStat, "
+		"TestStatProc1, TestStatProc2, or TestStatProc3", NULL);
 	return TCL_ERROR;
     }
 
     if (strcmp(argv[1], "insert") == 0) {
 	if (proc == PretendTclpStat) {
-	    Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": ",
-		   "must be ",
-		   "TestStatProc1, TestStatProc2, or TestStatProc3",
-		   (char *) NULL);
+	    Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": "
+		   "must be "
+		   "TestStatProc1, TestStatProc2, or TestStatProc3", NULL);
 	    return TCL_ERROR;
 	}
 	retVal = TclStatInsertProc(proc);
     } else if (strcmp(argv[1], "delete") == 0) {
 	retVal = TclStatDeleteProc(proc);
     } else {
-	Tcl_AppendResult(interp, "bad option \"", argv[1], "\": ",
-		"must be insert or delete", (char *) NULL);
+	Tcl_AppendResult(interp, "bad option \"", argv[1], "\": "
+		"must be insert or delete", NULL);
 	return TCL_ERROR;
     }
 
     if (retVal == TCL_ERROR) {
-	Tcl_AppendResult(interp, "\"", argv[2], "\": ",
-		"could not be ", argv[1], "ed", (char *) NULL);
+	Tcl_AppendResult(interp, "\"", argv[2], "\": "
+		"could not be ", argv[1], "ed", NULL);
     }
 
     return retVal;
 }
 
-static int PretendTclpStat(path, buf)
-    CONST char *path;
-    Tcl_StatBuf *buf;
+static int
+PretendTclpStat(
+    const char *path,
+    struct stat *buf)
 {
     int ret;
     Tcl_Obj *pathPtr = Tcl_NewStringObj(path, -1);
@@ -4775,8 +5255,8 @@ static int PretendTclpStat(path, buf)
 	 * Note that ino_t/ino64_t is unsigned...
 	 */
 
-        if (OUT_OF_URANGE(realBuf.st_ino) || OUT_OF_RANGE(realBuf.st_size)
-#   ifdef HAVE_ST_BLOCKS
+	if (OUT_OF_URANGE(realBuf.st_ino) || OUT_OF_RANGE(realBuf.st_size)
+#   ifdef HAVE_STRUCT_STAT_ST_BLOCKS
 		|| OUT_OF_RANGE(realBuf.st_blocks)
 #   endif
 	    ) {
@@ -4784,9 +5264,9 @@ static int PretendTclpStat(path, buf)
 	    errno = EOVERFLOW;
 #   else
 #       ifdef EFBIG
-            errno = EFBIG;
+	    errno = EFBIG;
 #       else
-#           error "what error should be returned for a value out of range?"
+#	    error "what error should be returned for a value out of range?"
 #       endif
 #   endif
 	    return -1;
@@ -4796,11 +5276,11 @@ static int PretendTclpStat(path, buf)
 #   undef OUT_OF_URANGE
 
 	/*
-	 * Copy across all supported fields, with possible type
-	 * coercions on those fields that change between the normal
-	 * and lf64 versions of the stat structure (on Solaris at
-	 * least.)  This is slow when the structure sizes coincide,
-	 * but that's what you get for mixing interfaces...
+	 * Copy across all supported fields, with possible type coercions on
+	 * those fields that change between the normal and lf64 versions of
+	 * the stat structure (on Solaris at least.) This is slow when the
+	 * structure sizes coincide, but that's what you get for mixing
+	 * interfaces...
 	 */
 
 	buf->st_mode    = realBuf.st_mode;
@@ -4814,8 +5294,10 @@ static int PretendTclpStat(path, buf)
 	buf->st_atime   = realBuf.st_atime;
 	buf->st_mtime   = realBuf.st_mtime;
 	buf->st_ctime   = realBuf.st_ctime;
-#   ifdef HAVE_ST_BLOCKS
+#   ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
 	buf->st_blksize = realBuf.st_blksize;
+#   endif
+#   ifdef HAVE_STRUCT_STAT_ST_BLOCKS
 	buf->st_blocks  = (blkcnt_t) realBuf.st_blocks;
 #   endif
     }
@@ -4824,36 +5306,35 @@ static int PretendTclpStat(path, buf)
 }
 
 static int
-TestStatProc1(path, buf)
-    CONST char *path;
-    Tcl_StatBuf *buf;
+TestStatProc1(
+    const char *path,
+    struct stat *buf)
 {
-    memset(buf, 0, sizeof(Tcl_StatBuf));
+    memset(buf, 0, sizeof(struct stat));
     buf->st_size = 1234;
     return ((strstr(path, "testStat1%.fil") == NULL) ? -1 : 0);
 }
 
-
 static int
-TestStatProc2(path, buf)
-    CONST char *path;
-    Tcl_StatBuf *buf;
+TestStatProc2(
+    const char *path,
+    struct stat *buf)
 {
-    memset(buf, 0, sizeof(Tcl_StatBuf));
+    memset(buf, 0, sizeof(struct stat));
     buf->st_size = 2345;
     return ((strstr(path, "testStat2%.fil") == NULL) ? -1 : 0);
 }
 
-
 static int
-TestStatProc3(path, buf)
-    CONST char *path;
-    Tcl_StatBuf *buf;
+TestStatProc3(
+    const char *path,
+    struct stat *buf)
 {
-    memset(buf, 0, sizeof(Tcl_StatBuf));
+    memset(buf, 0, sizeof(struct stat));
     buf->st_size = 3456;
     return ((strstr(path, "testStat3%.fil") == NULL) ? -1 : 0);
 }
+#endif
 
 /*
  *----------------------------------------------------------------------
@@ -4873,14 +5354,14 @@ TestStatProc3(path, buf)
  */
 
 static int
-TestmainthreadCmd (dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestmainthreadCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
   if (argc == 1) {
-      Tcl_Obj *idObj = Tcl_NewLongObj((long)Tcl_GetCurrentThread());
+      Tcl_Obj *idObj = Tcl_NewLongObj((long)(size_t)Tcl_GetCurrentThread());
       Tcl_SetObjResult(interp, idObj);
       return TCL_OK;
   } else {
@@ -4933,11 +5414,11 @@ MainLoop(void)
  */
 
 static int
-TestsetmainloopCmd (dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestsetmainloopCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
   exitMainLoop = 0;
   Tcl_SetMainLoop(MainLoop);
@@ -4962,15 +5443,16 @@ TestsetmainloopCmd (dummy, interp, argc, argv)
  */
 
 static int
-TestexitmainloopCmd (dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestexitmainloopCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
   exitMainLoop = 1;
   return TCL_OK;
 }
+#ifdef USE_OBSOLETE_FS_HOOKS
 
 /*
  *----------------------------------------------------------------------
@@ -4990,18 +5472,18 @@ TestexitmainloopCmd (dummy, interp, argc, argv)
  */
 
 static int
-TestaccessprocCmd (dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestaccessprocCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     TclAccessProc_ *proc;
     int retVal;
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"",
-		argv[0], " option arg\"", (char *) NULL);
+		argv[0], " option arg\"", NULL);
 	return TCL_ERROR;
     }
 
@@ -5014,41 +5496,40 @@ TestaccessprocCmd (dummy, interp, argc, argv)
     } else if (strcmp(argv[2], "TestAccessProc3") == 0) {
 	proc = TestAccessProc3;
     } else {
-	Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": ",
-		"must be TclpAccess, ",
-		"TestAccessProc1, TestAccessProc2, or TestAccessProc3",
-		(char *) NULL);
+	Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": "
+		"must be TclpAccess, "
+		"TestAccessProc1, TestAccessProc2, or TestAccessProc3", NULL);
 	return TCL_ERROR;
     }
 
     if (strcmp(argv[1], "insert") == 0) {
 	if (proc == PretendTclpAccess) {
-	    Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": ",
-		   "must be ",
-		   "TestAccessProc1, TestAccessProc2, or TestAccessProc3",
-		   (char *) NULL);
+	    Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": must be "
+		   "TestAccessProc1, TestAccessProc2, or TestAccessProc3"
+		   NULL);
 	    return TCL_ERROR;
 	}
 	retVal = TclAccessInsertProc(proc);
     } else if (strcmp(argv[1], "delete") == 0) {
 	retVal = TclAccessDeleteProc(proc);
     } else {
-	Tcl_AppendResult(interp, "bad option \"", argv[1], "\": ",
-		"must be insert or delete", (char *) NULL);
+	Tcl_AppendResult(interp, "bad option \"", argv[1], "\": "
+		"must be insert or delete", NULL);
 	return TCL_ERROR;
     }
 
     if (retVal == TCL_ERROR) {
-	Tcl_AppendResult(interp, "\"", argv[2], "\": ",
-		"could not be ", argv[1], "ed", (char *) NULL);
+	Tcl_AppendResult(interp, "\"", argv[2], "\": "
+		"could not be ", argv[1], "ed", NULL);
     }
 
     return retVal;
 }
 
-static int PretendTclpAccess(path, mode)
-    CONST char *path;
-    int mode;
+static int
+PretendTclpAccess(
+    const char *path,
+    int mode)
 {
     int ret;
     Tcl_Obj *pathPtr = Tcl_NewStringObj(path, -1);
@@ -5059,27 +5540,25 @@ static int PretendTclpAccess(path, mode)
 }
 
 static int
-TestAccessProc1(path, mode)
-    CONST char *path;
-    int mode;
+TestAccessProc1(
+    const char *path,
+    int mode)
 {
     return ((strstr(path, "testAccess1%.fil") == NULL) ? -1 : 0);
 }
 
-
 static int
-TestAccessProc2(path, mode)
-    CONST char *path;
-    int mode;
+TestAccessProc2(
+    const char *path,
+    int mode)
 {
     return ((strstr(path, "testAccess2%.fil") == NULL) ? -1 : 0);
 }
 
-
 static int
-TestAccessProc3(path, mode)
-    CONST char *path;
-    int mode;
+TestAccessProc3(
+    const char *path,
+    int mode)
 {
     return ((strstr(path, "testAccess3%.fil") == NULL) ? -1 : 0);
 }
@@ -5089,8 +5568,9 @@ TestAccessProc3(path, mode)
  *
  * TestopenfilechannelprocCmd  --
  *
- *	Implements the "testTclOpenFileChannelProc" cmd that is used to test the
- *	'TclOpenFileChannelInsertProc' & 'TclOpenFileChannelDeleteProc' C Apis.
+ *	Implements the "testTclOpenFileChannelProc" cmd that is used to test
+ *	the 'TclOpenFileChannelInsertProc' & 'TclOpenFileChannelDeleteProc' C
+ *	Apis.
  *
  * Results:
  *	A standard Tcl result.
@@ -5102,18 +5582,18 @@ TestAccessProc3(path, mode)
  */
 
 static int
-TestopenfilechannelprocCmd (dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestopenfilechannelprocCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     TclOpenFileChannelProc_ *proc;
     int retVal;
 
     if (argc != 3) {
 	Tcl_AppendResult(interp, "wrong # args: should be \"",
-		argv[0], " option arg\"", (char *) NULL);
+		argv[0], " option arg\"", NULL);
 	return TCL_ERROR;
     }
 
@@ -5126,50 +5606,47 @@ TestopenfilechannelprocCmd (dummy, interp, argc, argv)
     } else if (strcmp(argv[2], "TestOpenFileChannelProc3") == 0) {
 	proc = TestOpenFileChannelProc3;
     } else {
-	Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": ",
-		"must be TclpOpenFileChannel, ",
-		"TestOpenFileChannelProc1, TestOpenFileChannelProc2, or ",
-		"TestOpenFileChannelProc3",
-		(char *) NULL);
+	Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": "
+		"must be TclpOpenFileChannel, "
+		"TestOpenFileChannelProc1, TestOpenFileChannelProc2, or "
+		"TestOpenFileChannelProc3", NULL);
 	return TCL_ERROR;
     }
 
     if (strcmp(argv[1], "insert") == 0) {
 	if (proc == PretendTclpOpenFileChannel) {
-	    Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": ",
-		   "must be ",
-		   "TestOpenFileChannelProc1, TestOpenFileChannelProc2, or ",
-		   "TestOpenFileChannelProc3",
-		   (char *) NULL);
+	    Tcl_AppendResult(interp, "bad arg \"", argv[1], "\": "
+		   "must be "
+		   "TestOpenFileChannelProc1, TestOpenFileChannelProc2, or "
+		   "TestOpenFileChannelProc3", NULL);
 	    return TCL_ERROR;
 	}
 	retVal = TclOpenFileChannelInsertProc(proc);
     } else if (strcmp(argv[1], "delete") == 0) {
 	retVal = TclOpenFileChannelDeleteProc(proc);
     } else {
-	Tcl_AppendResult(interp, "bad option \"", argv[1], "\": ",
-		"must be insert or delete", (char *) NULL);
+	Tcl_AppendResult(interp, "bad option \"", argv[1], "\": "
+		"must be insert or delete", NULL);
 	return TCL_ERROR;
     }
 
     if (retVal == TCL_ERROR) {
-	Tcl_AppendResult(interp, "\"", argv[2], "\": ",
-		"could not be ", argv[1], "ed", (char *) NULL);
+	Tcl_AppendResult(interp, "\"", argv[2], "\": "
+		"could not be ", argv[1], "ed", NULL);
     }
 
     return retVal;
 }
 
 static Tcl_Channel
-PretendTclpOpenFileChannel(interp, fileName, modeString, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-					 * can be NULL. */
-    CONST char *fileName;               /* Name of file to open. */
-    CONST char *modeString;             /* A list of POSIX open modes or
-					 * a string such as "rw". */
-    int permissions;                    /* If the open involves creating a
-					 * file, with what modes to create
-					 * it? */
+PretendTclpOpenFileChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    const char *fileName,	/* Name of file to open. */
+    const char *modeString,	/* A list of POSIX open modes or
+				 * a string such as "rw". */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
 {
     Tcl_Channel ret;
     int mode, seekFlag;
@@ -5185,11 +5662,10 @@ PretendTclpOpenFileChannel(interp, fileName, modeString, permissions)
     if (ret != NULL) {
 	if (seekFlag) {
 	    if (Tcl_Seek(ret, (Tcl_WideInt)0, SEEK_END) < (Tcl_WideInt)0) {
-		if (interp != (Tcl_Interp *) NULL) {
+		if (interp != NULL) {
 		    Tcl_AppendResult(interp,
-		      "could not seek to end of file while opening \"",
-		      fileName, "\": ", 
-		      Tcl_PosixError(interp), (char *) NULL);
+			    "could not seek to end of file while opening \"",
+			    fileName, "\": ", Tcl_PosixError(interp), NULL);
 		}
 		Tcl_Close(NULL, ret);
 		return NULL;
@@ -5200,53 +5676,52 @@ PretendTclpOpenFileChannel(interp, fileName, modeString, permissions)
 }
 
 static Tcl_Channel
-TestOpenFileChannelProc1(interp, fileName, modeString, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-                                         * can be NULL. */
-    CONST char *fileName;               /* Name of file to open. */
-    CONST char *modeString;             /* A list of POSIX open modes or
-                                         * a string such as "rw". */
-    int permissions;                    /* If the open involves creating a
-                                         * file, with what modes to create
-                                         * it? */
-{
-    CONST char *expectname="testOpenFileChannel1%.fil";
+TestOpenFileChannelProc1(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    const char *fileName,	/* Name of file to open. */
+    const char *modeString,	/* A list of POSIX open modes or
+				 * a string such as "rw". */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
+{
+    const char *expectname = "testOpenFileChannel1%.fil";
     Tcl_DString ds;
-    
+
     Tcl_DStringInit(&ds);
     Tcl_JoinPath(1, &expectname, &ds);
 
     if (!strcmp(Tcl_DStringValue(&ds), fileName)) {
 	Tcl_DStringFree(&ds);
-	return (PretendTclpOpenFileChannel(interp, "__testOpenFileChannel1%__.fil",
+	return (PretendTclpOpenFileChannel(interp,
+		"__testOpenFileChannel1%__.fil",
 		modeString, permissions));
     } else {
 	Tcl_DStringFree(&ds);
-	return (NULL);
+	return NULL;
     }
 }
 
-
 static Tcl_Channel
-TestOpenFileChannelProc2(interp, fileName, modeString, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-                                         * can be NULL. */
-    CONST char *fileName;               /* Name of file to open. */
-    CONST char *modeString;             /* A list of POSIX open modes or
-                                         * a string such as "rw". */
-    int permissions;                    /* If the open involves creating a
-                                         * file, with what modes to create
-                                         * it? */
-{
-    CONST char *expectname="testOpenFileChannel2%.fil";
+TestOpenFileChannelProc2(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    const char *fileName,	/* Name of file to open. */
+    const char *modeString,	/* A list of POSIX open modes or
+				 * a string such as "rw". */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
+{
+    const char *expectname = "testOpenFileChannel2%.fil";
     Tcl_DString ds;
-    
+
     Tcl_DStringInit(&ds);
     Tcl_JoinPath(1, &expectname, &ds);
 
     if (!strcmp(Tcl_DStringValue(&ds), fileName)) {
 	Tcl_DStringFree(&ds);
-	return (PretendTclpOpenFileChannel(interp, "__testOpenFileChannel2%__.fil",
+	return (PretendTclpOpenFileChannel(interp,
+		"__testOpenFileChannel2%__.fil",
 		modeString, permissions));
     } else {
 	Tcl_DStringFree(&ds);
@@ -5254,21 +5729,19 @@ TestOpenFileChannelProc2(interp, fileName, modeString, permissions)
     }
 }
 
-
 static Tcl_Channel
-TestOpenFileChannelProc3(interp, fileName, modeString, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-                                         * can be NULL. */
-    CONST char *fileName;               /* Name of file to open. */
-    CONST char *modeString;             /* A list of POSIX open modes or
-                                         * a string such as "rw". */
-    int permissions;                    /* If the open involves creating a
-                                         * file, with what modes to create
-                                         * it? */
-{
-    CONST char *expectname="testOpenFileChannel3%.fil";
+TestOpenFileChannelProc3(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    const char *fileName,	/* Name of file to open. */
+    const char *modeString,	/* A list of POSIX open modes or a string such
+				 * as "rw". */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
+{
+    const char *expectname = "testOpenFileChannel3%.fil";
     Tcl_DString ds;
-    
+
     Tcl_DStringInit(&ds);
     Tcl_JoinPath(1, &expectname, &ds);
 
@@ -5281,6 +5754,7 @@ TestOpenFileChannelProc3(interp, fileName, modeString, permissions)
 	return (NULL);
     }
 }
+#endif
 
 /*
  *----------------------------------------------------------------------
@@ -5301,13 +5775,13 @@ TestOpenFileChannelProc3(interp, fileName, modeString, permissions)
 
 	/* ARGSUSED */
 static int
-TestChannelCmd(clientData, interp, argc, argv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Interpreter for result. */
-    int argc;			/* Count of additional args. */
-    CONST char **argv;		/* Additional arg strings. */
+TestChannelCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Interpreter for result. */
+    int argc,			/* Count of additional args. */
+    const char **argv)		/* Additional arg strings. */
 {
-    CONST char *cmdName;	/* Sub command. */
+    const char *cmdName;	/* Sub command. */
     Tcl_HashTable *hTblPtr;	/* Hash table of channels. */
     Tcl_HashSearch hSearch;	/* Search variable. */
     Tcl_HashEntry *hPtr;	/* Search variable. */
@@ -5316,28 +5790,49 @@ TestChannelCmd(clientData, interp, argc, argv)
     Tcl_Channel chan;		/* The opaque type. */
     size_t len;			/* Length of subcommand string. */
     int IOQueued;		/* How much IO is queued inside channel? */
-    ChannelBuffer *bufPtr;	/* For iterating over queued IO. */
     char buf[TCL_INTEGER_SPACE];/* For sprintf. */
     int mode;			/* rw mode of the channel */
-    
+
     if (argc < 2) {
-        Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                " subcommand ?additional args..?\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		" subcommand ?additional args..?\"", NULL);
+	return TCL_ERROR;
     }
     cmdName = argv[1];
     len = strlen(cmdName);
 
-    chanPtr = (Channel *) NULL;
+    chanPtr = NULL;
 
     if (argc > 2) {
-        chan = Tcl_GetChannel(interp, argv[2], &mode);
-        if (chan == (Tcl_Channel) NULL) {
-            return TCL_ERROR;
-        }
-        chanPtr		= (Channel *) chan;
+	if ((cmdName[0] == 's') && (strncmp(cmdName, "splice", len) == 0)) {
+	    /* For splice access the pool of detached channels.
+	     * Locate channel, remove from the list.
+	     */
+
+	    TestChannel **nextPtrPtr, *curPtr;
+
+	    chan = (Tcl_Channel) NULL;
+	    for (nextPtrPtr = &firstDetached, curPtr = firstDetached;
+		 curPtr != NULL;
+		 nextPtrPtr = &(curPtr->nextPtr), curPtr = curPtr->nextPtr) {
+
+		if (strcmp(argv[2], Tcl_GetChannelName(curPtr->chan)) == 0) {
+		    *nextPtrPtr = curPtr->nextPtr;
+		    curPtr->nextPtr = NULL;
+		    chan = curPtr->chan;
+		    ckfree((char *) curPtr);
+		    break;
+		}
+	    }
+	} else {
+	    chan = Tcl_GetChannel(interp, argv[2], &mode);
+	}
+	if (chan == (Tcl_Channel) NULL) {
+	    return TCL_ERROR;
+	}
+	chanPtr		= (Channel *) chan;
 	statePtr	= chanPtr->state;
-        chanPtr		= statePtr->topChanPtr;
+	chanPtr		= statePtr->topChanPtr;
 	chan		= (Tcl_Channel) chanPtr;
     } else {
 	/* lint */
@@ -5345,329 +5840,350 @@ TestChannelCmd(clientData, interp, argc, argv)
 	chan		= NULL;
     }
 
+    if ((cmdName[0] == 's') && (strncmp(cmdName, "setchannelerror", len) == 0)) {
+
+	Tcl_Obj *msg = Tcl_NewStringObj(argv[3],-1);
+
+	Tcl_IncrRefCount(msg);
+	Tcl_SetChannelError(chan, msg);
+	Tcl_DecrRefCount(msg);
+
+	Tcl_GetChannelError(chan, &msg);
+	Tcl_SetObjResult(interp, msg);
+	Tcl_DecrRefCount(msg);
+	return TCL_OK;
+    }
+    if ((cmdName[0] == 's') && (strncmp(cmdName, "setchannelerrorinterp", len) == 0)) {
+
+	Tcl_Obj *msg = Tcl_NewStringObj(argv[3],-1);
+
+	Tcl_IncrRefCount(msg);
+	Tcl_SetChannelErrorInterp(interp, msg);
+	Tcl_DecrRefCount(msg);
+
+	Tcl_GetChannelErrorInterp(interp, &msg);
+	Tcl_SetObjResult(interp, msg);
+	Tcl_DecrRefCount(msg);
+	return TCL_OK;
+    }
+
+    /*
+     * "cut" is actually more a simplified detach facility as provided by the
+     * Thread package. Without the safeguards of a regular command (no
+     * checking that the command is truly cut'able, no mutexes for
+     * thread-safety). Its complementary command is "splice", see below.
+     */
+
     if ((cmdName[0] == 'c') && (strncmp(cmdName, "cut", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " cut channelName\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        Tcl_CutChannel(chan);
-        return TCL_OK;
+	TestChannel *det;
+
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " cut channelName\"", NULL);
+	    return TCL_ERROR;
+	}
+
+	Tcl_RegisterChannel(NULL, chan); /* prevent closing */
+	Tcl_UnregisterChannel(interp, chan);
+
+	Tcl_CutChannel(chan);
+
+	/* Remember the channel in the pool of detached channels */
+
+	det = (TestChannel *) ckalloc(sizeof(TestChannel));
+	det->chan     = chan;
+	det->nextPtr  = firstDetached;
+	firstDetached = det;
+
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'c') &&
 	    (strncmp(cmdName, "clearchannelhandlers", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " clearchannelhandlers channelName\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        Tcl_ClearChannelHandlers(chan);
-        return TCL_OK;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " clearchannelhandlers channelName\"", NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_ClearChannelHandlers(chan);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'i') && (strncmp(cmdName, "info", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " info channelName\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        Tcl_AppendElement(interp, argv[2]);
-        Tcl_AppendElement(interp, Tcl_ChannelName(chanPtr->typePtr));
-        if (statePtr->flags & TCL_READABLE) {
-            Tcl_AppendElement(interp, "read");
-        } else {
-            Tcl_AppendElement(interp, "");
-        }
-        if (statePtr->flags & TCL_WRITABLE) {
-            Tcl_AppendElement(interp, "write");
-        } else {
-            Tcl_AppendElement(interp, "");
-        }
-        if (statePtr->flags & CHANNEL_NONBLOCKING) {
-            Tcl_AppendElement(interp, "nonblocking");
-        } else {
-            Tcl_AppendElement(interp, "blocking");
-        }
-        if (statePtr->flags & CHANNEL_LINEBUFFERED) {
-            Tcl_AppendElement(interp, "line");
-        } else if (statePtr->flags & CHANNEL_UNBUFFERED) {
-            Tcl_AppendElement(interp, "none");
-        } else {
-            Tcl_AppendElement(interp, "full");
-        }
-        if (statePtr->flags & BG_FLUSH_SCHEDULED) {
-            Tcl_AppendElement(interp, "async_flush");
-        } else {
-            Tcl_AppendElement(interp, "");
-        }
-        if (statePtr->flags & CHANNEL_EOF) {
-            Tcl_AppendElement(interp, "eof");
-        } else {
-            Tcl_AppendElement(interp, "");
-        }
-        if (statePtr->flags & CHANNEL_BLOCKED) {
-            Tcl_AppendElement(interp, "blocked");
-        } else {
-            Tcl_AppendElement(interp, "unblocked");
-        }
-        if (statePtr->inputTranslation == TCL_TRANSLATE_AUTO) {
-            Tcl_AppendElement(interp, "auto");
-            if (statePtr->flags & INPUT_SAW_CR) {
-                Tcl_AppendElement(interp, "saw_cr");
-            } else {
-                Tcl_AppendElement(interp, "");
-            }
-        } else if (statePtr->inputTranslation == TCL_TRANSLATE_LF) {
-            Tcl_AppendElement(interp, "lf");
-            Tcl_AppendElement(interp, "");
-        } else if (statePtr->inputTranslation == TCL_TRANSLATE_CR) {
-            Tcl_AppendElement(interp, "cr");
-            Tcl_AppendElement(interp, "");
-        } else if (statePtr->inputTranslation == TCL_TRANSLATE_CRLF) {
-            Tcl_AppendElement(interp, "crlf");
-            if (statePtr->flags & INPUT_SAW_CR) {
-                Tcl_AppendElement(interp, "queued_cr");
-            } else {
-                Tcl_AppendElement(interp, "");
-            }
-        }
-        if (statePtr->outputTranslation == TCL_TRANSLATE_AUTO) {
-            Tcl_AppendElement(interp, "auto");
-        } else if (statePtr->outputTranslation == TCL_TRANSLATE_LF) {
-            Tcl_AppendElement(interp, "lf");
-        } else if (statePtr->outputTranslation == TCL_TRANSLATE_CR) {
-            Tcl_AppendElement(interp, "cr");
-        } else if (statePtr->outputTranslation == TCL_TRANSLATE_CRLF) {
-            Tcl_AppendElement(interp, "crlf");
-        }
-        for (IOQueued = 0, bufPtr = statePtr->inQueueHead;
-	     bufPtr != (ChannelBuffer *) NULL;
-	     bufPtr = bufPtr->nextPtr) {
-            IOQueued += bufPtr->nextAdded - bufPtr->nextRemoved;
-        }
-        TclFormatInt(buf, IOQueued);
-        Tcl_AppendElement(interp, buf);
-        
-        IOQueued = 0;
-        if (statePtr->curOutPtr != (ChannelBuffer *) NULL) {
-            IOQueued = statePtr->curOutPtr->nextAdded -
-                statePtr->curOutPtr->nextRemoved;
-        }
-        for (bufPtr = statePtr->outQueueHead;
-	     bufPtr != (ChannelBuffer *) NULL;
-	     bufPtr = bufPtr->nextPtr) {
-            IOQueued += (bufPtr->nextAdded - bufPtr->nextRemoved);
-        }
-        TclFormatInt(buf, IOQueued);
-        Tcl_AppendElement(interp, buf);
-        
-        TclFormatInt(buf, (int)Tcl_Tell((Tcl_Channel) chanPtr));
-        Tcl_AppendElement(interp, buf);
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " info channelName\"", NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_AppendElement(interp, argv[2]);
+	Tcl_AppendElement(interp, Tcl_ChannelName(chanPtr->typePtr));
+	if (statePtr->flags & TCL_READABLE) {
+	    Tcl_AppendElement(interp, "read");
+	} else {
+	    Tcl_AppendElement(interp, "");
+	}
+	if (statePtr->flags & TCL_WRITABLE) {
+	    Tcl_AppendElement(interp, "write");
+	} else {
+	    Tcl_AppendElement(interp, "");
+	}
+	if (statePtr->flags & CHANNEL_NONBLOCKING) {
+	    Tcl_AppendElement(interp, "nonblocking");
+	} else {
+	    Tcl_AppendElement(interp, "blocking");
+	}
+	if (statePtr->flags & CHANNEL_LINEBUFFERED) {
+	    Tcl_AppendElement(interp, "line");
+	} else if (statePtr->flags & CHANNEL_UNBUFFERED) {
+	    Tcl_AppendElement(interp, "none");
+	} else {
+	    Tcl_AppendElement(interp, "full");
+	}
+	if (statePtr->flags & BG_FLUSH_SCHEDULED) {
+	    Tcl_AppendElement(interp, "async_flush");
+	} else {
+	    Tcl_AppendElement(interp, "");
+	}
+	if (statePtr->flags & CHANNEL_EOF) {
+	    Tcl_AppendElement(interp, "eof");
+	} else {
+	    Tcl_AppendElement(interp, "");
+	}
+	if (statePtr->flags & CHANNEL_BLOCKED) {
+	    Tcl_AppendElement(interp, "blocked");
+	} else {
+	    Tcl_AppendElement(interp, "unblocked");
+	}
+	if (statePtr->inputTranslation == TCL_TRANSLATE_AUTO) {
+	    Tcl_AppendElement(interp, "auto");
+	    if (statePtr->flags & INPUT_SAW_CR) {
+		Tcl_AppendElement(interp, "saw_cr");
+	    } else {
+		Tcl_AppendElement(interp, "");
+	    }
+	} else if (statePtr->inputTranslation == TCL_TRANSLATE_LF) {
+	    Tcl_AppendElement(interp, "lf");
+	    Tcl_AppendElement(interp, "");
+	} else if (statePtr->inputTranslation == TCL_TRANSLATE_CR) {
+	    Tcl_AppendElement(interp, "cr");
+	    Tcl_AppendElement(interp, "");
+	} else if (statePtr->inputTranslation == TCL_TRANSLATE_CRLF) {
+	    Tcl_AppendElement(interp, "crlf");
+	    if (statePtr->flags & INPUT_SAW_CR) {
+		Tcl_AppendElement(interp, "queued_cr");
+	    } else {
+		Tcl_AppendElement(interp, "");
+	    }
+	}
+	if (statePtr->outputTranslation == TCL_TRANSLATE_AUTO) {
+	    Tcl_AppendElement(interp, "auto");
+	} else if (statePtr->outputTranslation == TCL_TRANSLATE_LF) {
+	    Tcl_AppendElement(interp, "lf");
+	} else if (statePtr->outputTranslation == TCL_TRANSLATE_CR) {
+	    Tcl_AppendElement(interp, "cr");
+	} else if (statePtr->outputTranslation == TCL_TRANSLATE_CRLF) {
+	    Tcl_AppendElement(interp, "crlf");
+	}
+	IOQueued = Tcl_InputBuffered(chan);
+	TclFormatInt(buf, IOQueued);
+	Tcl_AppendElement(interp, buf);
 
-        TclFormatInt(buf, statePtr->refCount);
-        Tcl_AppendElement(interp, buf);
+	IOQueued = Tcl_OutputBuffered(chan);
+	TclFormatInt(buf, IOQueued);
+	Tcl_AppendElement(interp, buf);
 
-        return TCL_OK;
+	TclFormatInt(buf, (int)Tcl_Tell(chan));
+	Tcl_AppendElement(interp, buf);
+
+	TclFormatInt(buf, statePtr->refCount);
+	Tcl_AppendElement(interp, buf);
+
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'i') &&
-            (strncmp(cmdName, "inputbuffered", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
-        
-        for (IOQueued = 0, bufPtr = statePtr->inQueueHead;
-	     bufPtr != (ChannelBuffer *) NULL;
-	     bufPtr = bufPtr->nextPtr) {
-            IOQueued += bufPtr->nextAdded - bufPtr->nextRemoved;
-        }
-        TclFormatInt(buf, IOQueued);
-        Tcl_AppendResult(interp, buf, (char *) NULL);
-        return TCL_OK;
+	    (strncmp(cmdName, "inputbuffered", len) == 0)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
+	IOQueued = Tcl_InputBuffered(chan);
+	TclFormatInt(buf, IOQueued);
+	Tcl_AppendResult(interp, buf, NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'i') && (strncmp(cmdName, "isshared", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required", (char *) NULL);
-            return TCL_ERROR;
-        }
-        
-        TclFormatInt(buf, Tcl_IsChannelShared(chan));
-        Tcl_AppendResult(interp, buf, (char *) NULL);
-        return TCL_OK;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
+
+	TclFormatInt(buf, Tcl_IsChannelShared(chan));
+	Tcl_AppendResult(interp, buf, NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'i') && (strncmp(cmdName, "isstandard", len) == 0)) {
 	if (argc != 3) {
-	    Tcl_AppendResult(interp, "channel name required", (char *) NULL);
+	    Tcl_AppendResult(interp, "channel name required", NULL);
 	    return TCL_ERROR;
 	}
-	
+
 	TclFormatInt(buf, Tcl_IsStandardChannel(chan));
-	Tcl_AppendResult(interp, buf, (char *) NULL);
+	Tcl_AppendResult(interp, buf, NULL);
 	return TCL_OK;
     }
 
     if ((cmdName[0] == 'm') && (strncmp(cmdName, "mode", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
-        
-        if (statePtr->flags & TCL_READABLE) {
-            Tcl_AppendElement(interp, "read");
-        } else {
-            Tcl_AppendElement(interp, "");
-        }
-        if (statePtr->flags & TCL_WRITABLE) {
-            Tcl_AppendElement(interp, "write");
-        } else {
-            Tcl_AppendElement(interp, "");
-        }
-        return TCL_OK;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
+
+	if (statePtr->flags & TCL_READABLE) {
+	    Tcl_AppendElement(interp, "read");
+	} else {
+	    Tcl_AppendElement(interp, "");
+	}
+	if (statePtr->flags & TCL_WRITABLE) {
+	    Tcl_AppendElement(interp, "write");
+	} else {
+	    Tcl_AppendElement(interp, "");
+	}
+	return TCL_OK;
     }
-    
+
     if ((cmdName[0] == 'm') && (strncmp(cmdName, "mthread", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
 
-        TclFormatInt(buf, (long) Tcl_GetChannelThread(chan));
-        Tcl_AppendResult(interp, buf, (char *) NULL);
-        return TCL_OK;
+	TclFormatInt(buf, (long)(size_t)Tcl_GetChannelThread(chan));
+	Tcl_AppendResult(interp, buf, NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'n') && (strncmp(cmdName, "name", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
-        Tcl_AppendResult(interp, statePtr->channelName, (char *) NULL);
-        return TCL_OK;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_AppendResult(interp, statePtr->channelName, NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'o') && (strncmp(cmdName, "open", len) == 0)) {
-        hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
-        if (hTblPtr == (Tcl_HashTable *) NULL) {
-            return TCL_OK;
-        }
-        for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-	     hPtr != (Tcl_HashEntry *) NULL;
+	hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
+	if (hTblPtr == NULL) {
+	    return TCL_OK;
+	}
+	for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
+	     hPtr != NULL;
 	     hPtr = Tcl_NextHashEntry(&hSearch)) {
-            Tcl_AppendElement(interp, Tcl_GetHashKey(hTblPtr, hPtr));
-        }
-        return TCL_OK;
+	    Tcl_AppendElement(interp, Tcl_GetHashKey(hTblPtr, hPtr));
+	}
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'o') &&
-            (strncmp(cmdName, "outputbuffered", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
+	    (strncmp(cmdName, "outputbuffered", len) == 0)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
 
-        IOQueued = 0;
-        if (statePtr->curOutPtr != (ChannelBuffer *) NULL) {
-            IOQueued = statePtr->curOutPtr->nextAdded -
-                statePtr->curOutPtr->nextRemoved;
-        }
-        for (bufPtr = statePtr->outQueueHead;
-	     bufPtr != (ChannelBuffer *) NULL;
-	     bufPtr = bufPtr->nextPtr) {
-            IOQueued += (bufPtr->nextAdded - bufPtr->nextRemoved);
-        }
-        TclFormatInt(buf, IOQueued);
-        Tcl_AppendResult(interp, buf, (char *) NULL);
-        return TCL_OK;
+	IOQueued = Tcl_OutputBuffered(chan);
+	TclFormatInt(buf, IOQueued);
+	Tcl_AppendResult(interp, buf, NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'q') &&
-            (strncmp(cmdName, "queuedcr", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
+	    (strncmp(cmdName, "queuedcr", len) == 0)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
 
-        Tcl_AppendResult(interp,
-                (statePtr->flags & INPUT_SAW_CR) ? "1" : "0",
-                (char *) NULL);
-        return TCL_OK;
+	Tcl_AppendResult(interp,
+		(statePtr->flags & INPUT_SAW_CR) ? "1" : "0", NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'r') && (strncmp(cmdName, "readable", len) == 0)) {
-        hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
-        if (hTblPtr == (Tcl_HashTable *) NULL) {
-            return TCL_OK;
-        }
-        for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-	     hPtr != (Tcl_HashEntry *) NULL;
+	hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
+	if (hTblPtr == NULL) {
+	    return TCL_OK;
+	}
+	for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
+	     hPtr != NULL;
 	     hPtr = Tcl_NextHashEntry(&hSearch)) {
-            chanPtr  = (Channel *) Tcl_GetHashValue(hPtr);
+	    chanPtr  = (Channel *) Tcl_GetHashValue(hPtr);
 	    statePtr = chanPtr->state;
-            if (statePtr->flags & TCL_READABLE) {
-                Tcl_AppendElement(interp, Tcl_GetHashKey(hTblPtr, hPtr));
-            }
-        }
-        return TCL_OK;
+	    if (statePtr->flags & TCL_READABLE) {
+		Tcl_AppendElement(interp, Tcl_GetHashKey(hTblPtr, hPtr));
+	    }
+	}
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'r') && (strncmp(cmdName, "refcount", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
-        
-        TclFormatInt(buf, statePtr->refCount);
-        Tcl_AppendResult(interp, buf, (char *) NULL);
-        return TCL_OK;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
+
+	TclFormatInt(buf, statePtr->refCount);
+	Tcl_AppendResult(interp, buf, NULL);
+	return TCL_OK;
     }
 
+    /*
+     * "splice" is actually more a simplified attach facility as provided by
+     * the Thread package. Without the safeguards of a regular command (no
+     * checking that the command is truly cut'able, no mutexes for
+     * thread-safety). Its complementary command is "cut", see above.
+     */
+
     if ((cmdName[0] == 's') && (strncmp(cmdName, "splice", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required", (char *) NULL);
-            return TCL_ERROR;
-        }
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
 
-        Tcl_SpliceChannel(chan);
-        return TCL_OK;
+	Tcl_SpliceChannel(chan);
+
+	Tcl_RegisterChannel(interp, chan);
+	Tcl_UnregisterChannel(NULL, chan);
+
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 't') && (strncmp(cmdName, "type", len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "channel name required",
-                    (char *) NULL);
-            return TCL_ERROR;
-        }
-        Tcl_AppendResult(interp, Tcl_ChannelName(chanPtr->typePtr),
-		(char *) NULL);
-        return TCL_OK;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "channel name required", NULL);
+	    return TCL_ERROR;
+	}
+	Tcl_AppendResult(interp, Tcl_ChannelName(chanPtr->typePtr), NULL);
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 'w') && (strncmp(cmdName, "writable", len) == 0)) {
-        hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
-        if (hTblPtr == (Tcl_HashTable *) NULL) {
-            return TCL_OK;
-        }
-        for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
-	     hPtr != (Tcl_HashEntry *) NULL;
-	     hPtr = Tcl_NextHashEntry(&hSearch)) {
-            chanPtr = (Channel *) Tcl_GetHashValue(hPtr);
+	hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, "tclIO", NULL);
+	if (hTblPtr == NULL) {
+	    return TCL_OK;
+	}
+	for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
+		hPtr != NULL; hPtr = Tcl_NextHashEntry(&hSearch)) {
+	    chanPtr = (Channel *) Tcl_GetHashValue(hPtr);
 	    statePtr = chanPtr->state;
-            if (statePtr->flags & TCL_WRITABLE) {
-                Tcl_AppendElement(interp, Tcl_GetHashKey(hTblPtr, hPtr));
-            }
-        }
-        return TCL_OK;
+	    if (statePtr->flags & TCL_WRITABLE) {
+		Tcl_AppendElement(interp, Tcl_GetHashKey(hTblPtr, hPtr));
+	    }
+	}
+	return TCL_OK;
     }
 
     if ((cmdName[0] == 't') && (strncmp(cmdName, "transform", len) == 0)) {
@@ -5675,14 +6191,14 @@ TestChannelCmd(clientData, interp, argc, argv)
 	 * Syntax: transform channel -command command
 	 */
 
-        if (argc != 5) {
+	if (argc != 5) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		    " transform channelId -command cmd\"", (char *) NULL);
-            return TCL_ERROR;
-        }
+		    " transform channelId -command cmd\"", NULL);
+	    return TCL_ERROR;
+	}
 	if (strcmp(argv[3], "-command") != 0) {
 	    Tcl_AppendResult(interp, "bad argument \"", argv[3],
-		    "\": should be \"-command\"", (char *) NULL);
+		    "\": should be \"-command\"", NULL);
 	    return TCL_ERROR;
 	}
 
@@ -5695,18 +6211,17 @@ TestChannelCmd(clientData, interp, argc, argv)
 	 * Syntax: unstack channel
 	 */
 
-        if (argc != 3) {
+	if (argc != 3) {
 	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-		    " unstack channel\"", (char *) NULL);
-            return TCL_ERROR;
-        }
+		    " unstack channel\"", NULL);
+	    return TCL_ERROR;
+	}
 	return Tcl_UnstackChannel(interp, chan);
     }
 
-    Tcl_AppendResult(interp, "bad option \"", cmdName, "\": should be ",
-            "cut, clearchannelhandlers, info, isshared, mode, open, "
-	    "readable, splice, writable, transform, unstack",
-            (char *) NULL);
+    Tcl_AppendResult(interp, "bad option \"", cmdName, "\": should be "
+	    "cut, clearchannelhandlers, info, isshared, mode, open, "
+	    "readable, splice, writable, transform, unstack", NULL);
     return TCL_ERROR;
 }
 
@@ -5715,8 +6230,8 @@ TestChannelCmd(clientData, interp, argc, argv)
  *
  * TestChannelEventCmd --
  *
- *	This procedure implements the "testchannelevent" command. It is
- *	used to test the Tcl channel event mechanism.
+ *	This procedure implements the "testchannelevent" command. It is used
+ *	to test the Tcl channel event mechanism.
  *
  * Results:
  *	A standard Tcl result.
@@ -5729,198 +6244,198 @@ TestChannelCmd(clientData, interp, argc, argv)
 
 	/* ARGSUSED */
 static int
-TestChannelEventCmd(dummy, interp, argc, argv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int argc;				/* Number of arguments. */
-    CONST char **argv;			/* Argument strings. */
+TestChannelEventCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
 {
     Tcl_Obj *resultListPtr;
     Channel *chanPtr;
     ChannelState *statePtr;	/* state info for channel */
     EventScriptRecord *esPtr, *prevEsPtr, *nextEsPtr;
-    CONST char *cmd;
+    const char *cmd;
     int index, i, mask, len;
 
     if ((argc < 3) || (argc > 5)) {
-        Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                " channelName cmd ?arg1? ?arg2?\"", (char *) NULL);
-        return TCL_ERROR;
+	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		" channelName cmd ?arg1? ?arg2?\"", NULL);
+	return TCL_ERROR;
     }
     chanPtr = (Channel *) Tcl_GetChannel(interp, argv[1], NULL);
-    if (chanPtr == (Channel *) NULL) {
-        return TCL_ERROR;
+    if (chanPtr == NULL) {
+	return TCL_ERROR;
     }
     statePtr = chanPtr->state;
 
     cmd = argv[2];
     len = strlen(cmd);
     if ((cmd[0] == 'a') && (strncmp(cmd, "add", (unsigned) len) == 0)) {
-        if (argc != 5) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " channelName add eventSpec script\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        if (strcmp(argv[3], "readable") == 0) {
-            mask = TCL_READABLE;
-        } else if (strcmp(argv[3], "writable") == 0) {
-            mask = TCL_WRITABLE;
-        } else if (strcmp(argv[3], "none") == 0) {
-            mask = 0;
+	if (argc != 5) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " channelName add eventSpec script\"", NULL);
+	    return TCL_ERROR;
+	}
+	if (strcmp(argv[3], "readable") == 0) {
+	    mask = TCL_READABLE;
+	} else if (strcmp(argv[3], "writable") == 0) {
+	    mask = TCL_WRITABLE;
+	} else if (strcmp(argv[3], "none") == 0) {
+	    mask = 0;
 	} else {
-            Tcl_AppendResult(interp, "bad event name \"", argv[3],
-                    "\": must be readable, writable, or none", (char *) NULL);
-            return TCL_ERROR;
-        }
+	    Tcl_AppendResult(interp, "bad event name \"", argv[3],
+		    "\": must be readable, writable, or none", NULL);
+	    return TCL_ERROR;
+	}
+
+	esPtr = (EventScriptRecord *) ckalloc((unsigned)
+		sizeof(EventScriptRecord));
+	esPtr->nextPtr = statePtr->scriptRecordPtr;
+	statePtr->scriptRecordPtr = esPtr;
 
-        esPtr = (EventScriptRecord *) ckalloc((unsigned)
-                sizeof(EventScriptRecord));
-        esPtr->nextPtr = statePtr->scriptRecordPtr;
-        statePtr->scriptRecordPtr = esPtr;
-        
-        esPtr->chanPtr = chanPtr;
-        esPtr->interp = interp;
-        esPtr->mask = mask;
+	esPtr->chanPtr = chanPtr;
+	esPtr->interp = interp;
+	esPtr->mask = mask;
 	esPtr->scriptPtr = Tcl_NewStringObj(argv[4], -1);
 	Tcl_IncrRefCount(esPtr->scriptPtr);
 
-        Tcl_CreateChannelHandler((Tcl_Channel) chanPtr, mask,
-                TclChannelEventScriptInvoker, (ClientData) esPtr);
-        
-        return TCL_OK;
+	Tcl_CreateChannelHandler((Tcl_Channel) chanPtr, mask,
+		TclChannelEventScriptInvoker, (ClientData) esPtr);
+
+	return TCL_OK;
     }
 
     if ((cmd[0] == 'd') && (strncmp(cmd, "delete", (unsigned) len) == 0)) {
-        if (argc != 4) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " channelName delete index\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        if (Tcl_GetInt(interp, argv[3], &index) == TCL_ERROR) {
-            return TCL_ERROR;
-        }
-        if (index < 0) {
-            Tcl_AppendResult(interp, "bad event index: ", argv[3],
-                    ": must be nonnegative", (char *) NULL);
-            return TCL_ERROR;
-        }
-        for (i = 0, esPtr = statePtr->scriptRecordPtr;
-	     (i < index) && (esPtr != (EventScriptRecord *) NULL);
+	if (argc != 4) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " channelName delete index\"", NULL);
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetInt(interp, argv[3], &index) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
+	if (index < 0) {
+	    Tcl_AppendResult(interp, "bad event index: ", argv[3],
+		    ": must be nonnegative", NULL);
+	    return TCL_ERROR;
+	}
+	for (i = 0, esPtr = statePtr->scriptRecordPtr;
+	     (i < index) && (esPtr != NULL);
 	     i++, esPtr = esPtr->nextPtr) {
 	    /* Empty loop body. */
-        }
-        if (esPtr == (EventScriptRecord *) NULL) {
-            Tcl_AppendResult(interp, "bad event index ", argv[3],
-                    ": out of range", (char *) NULL);
-            return TCL_ERROR;
-        }
-        if (esPtr == statePtr->scriptRecordPtr) {
-            statePtr->scriptRecordPtr = esPtr->nextPtr;
-        } else {
-            for (prevEsPtr = statePtr->scriptRecordPtr;
-		 (prevEsPtr != (EventScriptRecord *) NULL) &&
+	}
+	if (esPtr == NULL) {
+	    Tcl_AppendResult(interp, "bad event index ", argv[3],
+		    ": out of range", NULL);
+	    return TCL_ERROR;
+	}
+	if (esPtr == statePtr->scriptRecordPtr) {
+	    statePtr->scriptRecordPtr = esPtr->nextPtr;
+	} else {
+	    for (prevEsPtr = statePtr->scriptRecordPtr;
+		 (prevEsPtr != NULL) &&
 		     (prevEsPtr->nextPtr != esPtr);
 		 prevEsPtr = prevEsPtr->nextPtr) {
-                /* Empty loop body. */
-            }
-            if (prevEsPtr == (EventScriptRecord *) NULL) {
-                panic("TestChannelEventCmd: damaged event script list");
-            }
-            prevEsPtr->nextPtr = esPtr->nextPtr;
-        }
-        Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
-                TclChannelEventScriptInvoker, (ClientData) esPtr);
+		/* Empty loop body. */
+	    }
+	    if (prevEsPtr == NULL) {
+		Tcl_Panic("TestChannelEventCmd: damaged event script list");
+	    }
+	    prevEsPtr->nextPtr = esPtr->nextPtr;
+	}
+	Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
+		TclChannelEventScriptInvoker, (ClientData) esPtr);
 	Tcl_DecrRefCount(esPtr->scriptPtr);
-        ckfree((char *) esPtr);
+	ckfree((char *) esPtr);
 
-        return TCL_OK;
+	return TCL_OK;
     }
 
     if ((cmd[0] == 'l') && (strncmp(cmd, "list", (unsigned) len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " channelName list\"", (char *) NULL);
-            return TCL_ERROR;
-        }
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " channelName list\"", NULL);
+	    return TCL_ERROR;
+	}
 	resultListPtr = Tcl_GetObjResult(interp);
-        for (esPtr = statePtr->scriptRecordPtr;
-	     esPtr != (EventScriptRecord *) NULL;
+	for (esPtr = statePtr->scriptRecordPtr;
+	     esPtr != NULL;
 	     esPtr = esPtr->nextPtr) {
 	    if (esPtr->mask) {
- 	        Tcl_ListObjAppendElement(interp, resultListPtr, Tcl_NewStringObj(
+		Tcl_ListObjAppendElement(interp, resultListPtr, Tcl_NewStringObj(
 		    (esPtr->mask == TCL_READABLE) ? "readable" : "writable", -1));
- 	    } else {
- 	        Tcl_ListObjAppendElement(interp, resultListPtr, 
+	    } else {
+		Tcl_ListObjAppendElement(interp, resultListPtr,
 			Tcl_NewStringObj("none", -1));
 	    }
-  	    Tcl_ListObjAppendElement(interp, resultListPtr, esPtr->scriptPtr);
-        }
+	    Tcl_ListObjAppendElement(interp, resultListPtr, esPtr->scriptPtr);
+	}
 	Tcl_SetObjResult(interp, resultListPtr);
-        return TCL_OK;
+	return TCL_OK;
     }
 
     if ((cmd[0] == 'r') && (strncmp(cmd, "removeall", (unsigned) len) == 0)) {
-        if (argc != 3) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " channelName removeall\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        for (esPtr = statePtr->scriptRecordPtr;
-	     esPtr != (EventScriptRecord *) NULL;
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " channelName removeall\"", NULL);
+	    return TCL_ERROR;
+	}
+	for (esPtr = statePtr->scriptRecordPtr;
+	     esPtr != NULL;
 	     esPtr = nextEsPtr) {
-            nextEsPtr = esPtr->nextPtr;
-            Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
-                    TclChannelEventScriptInvoker, (ClientData) esPtr);
+	    nextEsPtr = esPtr->nextPtr;
+	    Tcl_DeleteChannelHandler((Tcl_Channel) chanPtr,
+		    TclChannelEventScriptInvoker, (ClientData) esPtr);
 	    Tcl_DecrRefCount(esPtr->scriptPtr);
-            ckfree((char *) esPtr);
-        }
-        statePtr->scriptRecordPtr = (EventScriptRecord *) NULL;
-        return TCL_OK;
+	    ckfree((char *) esPtr);
+	}
+	statePtr->scriptRecordPtr = NULL;
+	return TCL_OK;
     }
 
-    if  ((cmd[0] == 's') && (strncmp(cmd, "set", (unsigned) len) == 0)) {
-        if (argc != 5) {
-            Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-                    " channelName delete index event\"", (char *) NULL);
-            return TCL_ERROR;
-        }
-        if (Tcl_GetInt(interp, argv[3], &index) == TCL_ERROR) {
-            return TCL_ERROR;
-        }
-        if (index < 0) {
-            Tcl_AppendResult(interp, "bad event index: ", argv[3],
-                    ": must be nonnegative", (char *) NULL);
-            return TCL_ERROR;
-        }
-        for (i = 0, esPtr = statePtr->scriptRecordPtr;
-	     (i < index) && (esPtr != (EventScriptRecord *) NULL);
+    if	((cmd[0] == 's') && (strncmp(cmd, "set", (unsigned) len) == 0)) {
+	if (argc != 5) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+		    " channelName delete index event\"", NULL);
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetInt(interp, argv[3], &index) == TCL_ERROR) {
+	    return TCL_ERROR;
+	}
+	if (index < 0) {
+	    Tcl_AppendResult(interp, "bad event index: ", argv[3],
+		    ": must be nonnegative", NULL);
+	    return TCL_ERROR;
+	}
+	for (i = 0, esPtr = statePtr->scriptRecordPtr;
+	     (i < index) && (esPtr != NULL);
 	     i++, esPtr = esPtr->nextPtr) {
 	    /* Empty loop body. */
-        }
-        if (esPtr == (EventScriptRecord *) NULL) {
-            Tcl_AppendResult(interp, "bad event index ", argv[3],
-                    ": out of range", (char *) NULL);
-            return TCL_ERROR;
-        }
+	}
+	if (esPtr == NULL) {
+	    Tcl_AppendResult(interp, "bad event index ", argv[3],
+		    ": out of range", NULL);
+	    return TCL_ERROR;
+	}
 
-        if (strcmp(argv[4], "readable") == 0) {
-            mask = TCL_READABLE;
-        } else if (strcmp(argv[4], "writable") == 0) {
-            mask = TCL_WRITABLE;
-        } else if (strcmp(argv[4], "none") == 0) {
-            mask = 0;
+	if (strcmp(argv[4], "readable") == 0) {
+	    mask = TCL_READABLE;
+	} else if (strcmp(argv[4], "writable") == 0) {
+	    mask = TCL_WRITABLE;
+	} else if (strcmp(argv[4], "none") == 0) {
+	    mask = 0;
 	} else {
-            Tcl_AppendResult(interp, "bad event name \"", argv[4],
-                    "\": must be readable, writable, or none", (char *) NULL);
-            return TCL_ERROR;
-        }
+	    Tcl_AppendResult(interp, "bad event name \"", argv[4],
+		    "\": must be readable, writable, or none", NULL);
+	    return TCL_ERROR;
+	}
 	esPtr->mask = mask;
-        Tcl_CreateChannelHandler((Tcl_Channel) chanPtr, mask,
-                TclChannelEventScriptInvoker, (ClientData) esPtr);
+	Tcl_CreateChannelHandler((Tcl_Channel) chanPtr, mask,
+		TclChannelEventScriptInvoker, (ClientData) esPtr);
 	return TCL_OK;
-    }    
-    Tcl_AppendResult(interp, "bad command ", cmd, ", must be one of ",
-            "add, delete, list, set, or removeall", (char *) NULL);
+    }
+    Tcl_AppendResult(interp, "bad command ", cmd, ", must be one of "
+	    "add, delete, list, set, or removeall", NULL);
     return TCL_ERROR;
 }
 
@@ -5941,11 +6456,11 @@ TestChannelEventCmd(dummy, interp, argc, argv)
  */
 
 static int
-TestWrongNumArgsObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+TestWrongNumArgsObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int i, length;
     char *msg;
@@ -5958,7 +6473,7 @@ TestWrongNumArgsObjCmd(dummy, interp, objc, objv)
 	Tcl_SetResult(interp, "insufficient arguments", TCL_STATIC);
 	return TCL_ERROR;
     }
-    
+
     if (Tcl_GetIntFromObj(interp, objv[1], &i) != TCL_OK) {
 	return TCL_ERROR;
     }
@@ -5967,7 +6482,7 @@ TestWrongNumArgsObjCmd(dummy, interp, objc, objv)
     if (length == 0) {
 	msg = NULL;
     }
-    
+
     if (i > objc - 3) {
 	/*
 	 * Asked for more arguments than were given.
@@ -5997,14 +6512,14 @@ TestWrongNumArgsObjCmd(dummy, interp, objc, objv)
  */
 
 static int
-TestGetIndexFromObjStructObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+TestGetIndexFromObjStructObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     char *ary[] = {
-	"a", "b", "c", "d", "e", "f", (char *)NULL,(char *)NULL
+	"a", "b", "c", "d", "e", "f", NULL, NULL
     };
     int idx,target;
 
@@ -6013,7 +6528,7 @@ TestGetIndexFromObjStructObjCmd(dummy, interp, objc, objv)
 	return TCL_ERROR;
     }
     if (Tcl_GetIndexFromObjStruct(interp, objv[1], ary, 2*sizeof(char *),
-				  "dummy", 0, &idx) != TCL_OK) {
+	    "dummy", 0, &idx) != TCL_OK) {
 	return TCL_ERROR;
     }
     if (Tcl_GetIntFromObj(interp, objv[2], &target) != TCL_OK) {
@@ -6023,7 +6538,7 @@ TestGetIndexFromObjStructObjCmd(dummy, interp, objc, objv)
 	char buffer[64];
 	sprintf(buffer, "%d", idx);
 	Tcl_AppendResult(interp, "index value comparison failed: got ",
-			 buffer, NULL);
+		buffer, NULL);
 	sprintf(buffer, "%d", target);
 	Tcl_AppendResult(interp, " when ", buffer, " expected", NULL);
 	return TCL_ERROR;
@@ -6037,9 +6552,9 @@ TestGetIndexFromObjStructObjCmd(dummy, interp, objc, objv)
  *
  * TestFilesystemObjCmd --
  *
- *	This procedure implements the "testfilesystem" command.  It is
- *	used to test Tcl_FSRegister, Tcl_FSUnregister, and can be used
- *	to test that the pluggable filesystem works.
+ *	This procedure implements the "testfilesystem" command. It is used to
+ *	test Tcl_FSRegister, Tcl_FSUnregister, and can be used to test that
+ *	the pluggable filesystem works.
  *
  * Results:
  *	A standard Tcl result.
@@ -6051,15 +6566,15 @@ TestGetIndexFromObjStructObjCmd(dummy, interp, objc, objv)
  */
 
 static int
-TestFilesystemObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;
-    Tcl_Interp *interp;
-    int		objc;
-    Tcl_Obj	*CONST objv[];
+TestFilesystemObjCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
 {
     int res, boolVal;
     char *msg;
-    
+
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "boolean");
 	return TCL_ERROR;
@@ -6078,78 +6593,90 @@ TestFilesystemObjCmd(dummy, interp, objc, objv)
     return res;
 }
 
-static int 
-TestReportInFilesystem(Tcl_Obj *pathPtr, ClientData *clientDataPtr)
+static int
+TestReportInFilesystem(
+    Tcl_Obj *pathPtr,
+    ClientData *clientDataPtr)
 {
-    static Tcl_Obj* lastPathPtr = NULL;
-    
+    static Tcl_Obj *lastPathPtr = NULL;
+    Tcl_Obj *newPathPtr;
+
     if (pathPtr == lastPathPtr) {
 	/* Reject all files second time around */
-        return -1;
-    } else {
-	Tcl_Obj * newPathPtr;
-	/* Try to claim all files first time around */
-
-	newPathPtr = Tcl_DuplicateObj(pathPtr);
-	lastPathPtr = newPathPtr;
-	Tcl_IncrRefCount(newPathPtr);
-	if (Tcl_FSGetFileSystemForPath(newPathPtr) == NULL) {
-	    /* Nothing claimed it.  Therefore we don't either */
-	    Tcl_DecrRefCount(newPathPtr);
-	    lastPathPtr = NULL;
-	    return -1;
-	} else {
-	    lastPathPtr = NULL;
-	    *clientDataPtr = (ClientData) newPathPtr;
-	    return TCL_OK;
-	}
+	return -1;
+    }
+
+    /* Try to claim all files first time around */
+
+    newPathPtr = Tcl_DuplicateObj(pathPtr);
+    lastPathPtr = newPathPtr;
+    Tcl_IncrRefCount(newPathPtr);
+    if (Tcl_FSGetFileSystemForPath(newPathPtr) == NULL) {
+	/* Nothing claimed it. Therefore we don't either */
+	Tcl_DecrRefCount(newPathPtr);
+	lastPathPtr = NULL;
+	return -1;
     }
+    lastPathPtr = NULL;
+    *clientDataPtr = (ClientData) newPathPtr;
+    return TCL_OK;
 }
 
-/* 
- * Simple helper function to extract the native vfs representation of a
- * path object, or NULL if no such representation exists.
+/*
+ * Simple helper function to extract the native vfs representation of a path
+ * object, or NULL if no such representation exists.
  */
-static Tcl_Obj* 
-TestReportGetNativePath(Tcl_Obj* pathObjPtr) {
-    return (Tcl_Obj*) Tcl_FSGetInternalRep(pathObjPtr, &testReportingFilesystem);
+
+static Tcl_Obj *
+TestReportGetNativePath(
+    Tcl_Obj *pathPtr)
+{
+    return (Tcl_Obj*) Tcl_FSGetInternalRep(pathPtr, &testReportingFilesystem);
 }
 
-static void 
-TestReportFreeInternalRep(ClientData clientData) {
-    Tcl_Obj *nativeRep = (Tcl_Obj*)clientData;
+static void
+TestReportFreeInternalRep(
+    ClientData clientData)
+{
+    Tcl_Obj *nativeRep = (Tcl_Obj *) clientData;
+
     if (nativeRep != NULL) {
 	/* Free the path */
 	Tcl_DecrRefCount(nativeRep);
     }
 }
 
-static ClientData 
-TestReportDupInternalRep(ClientData clientData) {
-    Tcl_Obj *original = (Tcl_Obj*)clientData;
+static ClientData
+TestReportDupInternalRep(
+    ClientData clientData)
+{
+    Tcl_Obj *original = (Tcl_Obj *) clientData;
+
     Tcl_IncrRefCount(original);
     return clientData;
 }
 
 static void
-TestReport(cmd, path, arg2)
-    CONST char* cmd;
-    Tcl_Obj* path;
-    Tcl_Obj* arg2;
+TestReport(
+    const char *cmd,
+    Tcl_Obj *path,
+    Tcl_Obj *arg2)
 {
-    Tcl_Interp* interp = (Tcl_Interp*) Tcl_FSData(&testReportingFilesystem);
+    Tcl_Interp *interp = (Tcl_Interp *) Tcl_FSData(&testReportingFilesystem);
+
     if (interp == NULL) {
 	/* This is bad, but not much we can do about it */
     } else {
-	/* 
-	 * No idea why I decided to program this up using the
-	 * old string-based API, but there you go.  We should
-	 * convert it to objects.
+	/*
+	 * No idea why I decided to program this up using the old string-based
+	 * API, but there you go. We should convert it to objects.
 	 */
+
 	Tcl_SavedResult savedResult;
 	Tcl_DString ds;
+
 	Tcl_DStringInit(&ds);
-	Tcl_DStringAppend(&ds, "lappend filesystemReport ",-1);
+	Tcl_DStringAppend(&ds, "lappend filesystemReport ", -1);
 	Tcl_DStringStartSublist(&ds);
 	Tcl_DStringAppendElement(&ds, cmd);
 	if (path != NULL) {
@@ -6167,254 +6694,259 @@ TestReport(cmd, path, arg2)
 }
 
 static int
-TestReportStat(path, buf)
-    Tcl_Obj *path;		/* Path of file to stat (in current CP). */
-    Tcl_StatBuf *buf;		/* Filled with results of stat call. */
+TestReportStat(
+    Tcl_Obj *path,		/* Path of file to stat (in current CP). */
+    Tcl_StatBuf *buf)		/* Filled with results of stat call. */
 {
-    TestReport("stat",path, NULL);
-    return Tcl_FSStat(TestReportGetNativePath(path),buf);
+    TestReport("stat", path, NULL);
+    return Tcl_FSStat(TestReportGetNativePath(path), buf);
 }
+
 static int
-TestReportLstat(path, buf)
-    Tcl_Obj *path;		/* Path of file to stat (in current CP). */
-    Tcl_StatBuf *buf;		/* Filled with results of stat call. */
+TestReportLstat(
+    Tcl_Obj *path,		/* Path of file to stat (in current CP). */
+    Tcl_StatBuf *buf)		/* Filled with results of stat call. */
 {
-    TestReport("lstat",path, NULL);
-    return Tcl_FSLstat(TestReportGetNativePath(path),buf);
+    TestReport("lstat", path, NULL);
+    return Tcl_FSLstat(TestReportGetNativePath(path), buf);
 }
+
 static int
-TestReportAccess(path, mode)
-    Tcl_Obj *path;		/* Path of file to access (in current CP). */
-    int mode;                   /* Permission setting. */
+TestReportAccess(
+    Tcl_Obj *path,		/* Path of file to access (in current CP). */
+    int mode)			/* Permission setting. */
 {
-    TestReport("access",path,NULL);
-    return Tcl_FSAccess(TestReportGetNativePath(path),mode);
+    TestReport("access", path, NULL);
+    return Tcl_FSAccess(TestReportGetNativePath(path), mode);
 }
+
 static Tcl_Channel
-TestReportOpenFileChannel(interp, fileName, mode, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-					 * can be NULL. */
-    Tcl_Obj *fileName;                  /* Name of file to open. */
-    int mode;                           /* POSIX open mode. */
-    int permissions;                    /* If the open involves creating a
-					 * file, with what modes to create
-					 * it? */
-{
-    TestReport("open",fileName, NULL);
+TestReportOpenFileChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    Tcl_Obj *fileName,		/* Name of file to open. */
+    int mode,			/* POSIX open mode. */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
+{
+    TestReport("open", fileName, NULL);
     return TclpOpenFileChannel(interp, TestReportGetNativePath(fileName),
-				 mode, permissions);
+	    mode, permissions);
 }
 
 static int
-TestReportMatchInDirectory(interp, resultPtr, dirPtr, pattern, types)
-    Tcl_Interp *interp;		/* Interpreter to receive results. */
-    Tcl_Obj *resultPtr;		/* Object to lappend results. */
-    Tcl_Obj *dirPtr;	        /* Contains path to directory to search. */
-    CONST char *pattern;	/* Pattern to match against. */
-    Tcl_GlobTypeData *types;	/* Object containing list of acceptable types.
+TestReportMatchInDirectory(
+    Tcl_Interp *interp,		/* Interpreter for error messages. */
+    Tcl_Obj *resultPtr,		/* Object to lappend results. */
+    Tcl_Obj *dirPtr,		/* Contains path to directory to search. */
+    const char *pattern,	/* Pattern to match against. */
+    Tcl_GlobTypeData *types)	/* Object containing list of acceptable types.
 				 * May be NULL. */
 {
     if (types != NULL && types->type & TCL_GLOB_TYPE_MOUNT) {
-	TestReport("matchmounts",dirPtr, NULL);
+	TestReport("matchmounts", dirPtr, NULL);
 	return TCL_OK;
     } else {
-	TestReport("matchindirectory",dirPtr, NULL);
-	return Tcl_FSMatchInDirectory(interp, resultPtr, 
-				      TestReportGetNativePath(dirPtr), pattern, 
-				      types);
+	TestReport("matchindirectory", dirPtr, NULL);
+	return Tcl_FSMatchInDirectory(interp, resultPtr,
+		TestReportGetNativePath(dirPtr), pattern, types);
     }
 }
+
 static int
-TestReportChdir(dirName)
-    Tcl_Obj *dirName;
+TestReportChdir(
+    Tcl_Obj *dirName)
 {
-    TestReport("chdir",dirName,NULL);
+    TestReport("chdir", dirName, NULL);
     return Tcl_FSChdir(TestReportGetNativePath(dirName));
 }
+
 static int
-TestReportLoadFile(interp, fileName,  
-		   handlePtr, unloadProcPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Obj *fileName;		/* Name of the file containing the desired
+TestReportLoadFile(
+    Tcl_Interp *interp,		/* Used for error reporting. */
+    Tcl_Obj *fileName,		/* Name of the file containing the desired
 				 * code. */
-    Tcl_LoadHandle *handlePtr;	/* Filled with token for dynamically loaded
-				 * file which will be passed back to 
+    Tcl_LoadHandle *handlePtr,	/* Filled with token for dynamically loaded
+				 * file which will be passed back to
 				 * (*unloadProcPtr)() to unload the file. */
-    Tcl_FSUnloadFileProc **unloadProcPtr;	
+    Tcl_FSUnloadFileProc **unloadProcPtr)
 				/* Filled with address of Tcl_FSUnloadFileProc
 				 * function which should be used for
 				 * this file. */
 {
-    TestReport("loadfile",fileName,NULL);
-    return Tcl_FSLoadFile(interp, TestReportGetNativePath(fileName), NULL, NULL,
-			  NULL, NULL, handlePtr, unloadProcPtr);
+    TestReport("loadfile", fileName, NULL);
+    return Tcl_FSLoadFile(interp, TestReportGetNativePath(fileName), NULL,
+	    NULL, NULL, NULL, handlePtr, unloadProcPtr);
 }
+
 static Tcl_Obj *
-TestReportLink(path, to, linkType)
-    Tcl_Obj *path;		/* Path of file to readlink or link */
-    Tcl_Obj *to;		/* Path of file to link to, or NULL */
-    int linkType;
+TestReportLink(
+    Tcl_Obj *path,		/* Path of file to readlink or link */
+    Tcl_Obj *to,		/* Path of file to link to, or NULL */
+    int linkType)
 {
-    TestReport("link",path,to);
+    TestReport("link", path, to);
     return Tcl_FSLink(TestReportGetNativePath(path), to, linkType);
 }
+
 static int
-TestReportRenameFile(src, dst)
-    Tcl_Obj *src;		/* Pathname of file or dir to be renamed
+TestReportRenameFile(
+    Tcl_Obj *src,		/* Pathname of file or dir to be renamed
 				 * (UTF-8). */
-    Tcl_Obj *dst;		/* New pathname of file or directory
+    Tcl_Obj *dst)		/* New pathname of file or directory
 				 * (UTF-8). */
 {
-    TestReport("renamefile",src,dst);
-    return Tcl_FSRenameFile(TestReportGetNativePath(src), 
-			    TestReportGetNativePath(dst));
+    TestReport("renamefile", src, dst);
+    return Tcl_FSRenameFile(TestReportGetNativePath(src),
+	    TestReportGetNativePath(dst));
 }
-static int 
-TestReportCopyFile(src, dst)
-    Tcl_Obj *src;		/* Pathname of file to be copied (UTF-8). */
-    Tcl_Obj *dst;		/* Pathname of file to copy to (UTF-8). */
+
+static int
+TestReportCopyFile(
+    Tcl_Obj *src,		/* Pathname of file to be copied (UTF-8). */
+    Tcl_Obj *dst)		/* Pathname of file to copy to (UTF-8). */
 {
-    TestReport("copyfile",src,dst);
-    return Tcl_FSCopyFile(TestReportGetNativePath(src), 
-			    TestReportGetNativePath(dst));
+    TestReport("copyfile", src, dst);
+    return Tcl_FSCopyFile(TestReportGetNativePath(src),
+	    TestReportGetNativePath(dst));
 }
+
 static int
-TestReportDeleteFile(path)
-    Tcl_Obj *path;		/* Pathname of file to be removed (UTF-8). */
+TestReportDeleteFile(
+    Tcl_Obj *path)		/* Pathname of file to be removed (UTF-8). */
 {
-    TestReport("deletefile",path,NULL);
+    TestReport("deletefile", path, NULL);
     return Tcl_FSDeleteFile(TestReportGetNativePath(path));
 }
+
 static int
-TestReportCreateDirectory(path)
-    Tcl_Obj *path;		/* Pathname of directory to create (UTF-8). */
+TestReportCreateDirectory(
+    Tcl_Obj *path)		/* Pathname of directory to create (UTF-8). */
 {
-    TestReport("createdirectory",path,NULL);
+    TestReport("createdirectory", path, NULL);
     return Tcl_FSCreateDirectory(TestReportGetNativePath(path));
 }
+
 static int
-TestReportCopyDirectory(src, dst, errorPtr)
-    Tcl_Obj *src;		/* Pathname of directory to be copied
+TestReportCopyDirectory(
+    Tcl_Obj *src,		/* Pathname of directory to be copied
 				 * (UTF-8). */
-    Tcl_Obj *dst;		/* Pathname of target directory (UTF-8). */
-    Tcl_Obj **errorPtr;	        /* If non-NULL, to be filled with UTF-8 name 
-                       	         * of file causing error. */
+    Tcl_Obj *dst,		/* Pathname of target directory (UTF-8). */
+    Tcl_Obj **errorPtr)		/* If non-NULL, to be filled with UTF-8 name
+				 * of file causing error. */
 {
-    TestReport("copydirectory",src,dst);
-    return Tcl_FSCopyDirectory(TestReportGetNativePath(src), 
-			    TestReportGetNativePath(dst), errorPtr);
+    TestReport("copydirectory", src, dst);
+    return Tcl_FSCopyDirectory(TestReportGetNativePath(src),
+	    TestReportGetNativePath(dst), errorPtr);
 }
+
 static int
-TestReportRemoveDirectory(path, recursive, errorPtr)
-    Tcl_Obj *path;		/* Pathname of directory to be removed
+TestReportRemoveDirectory(
+    Tcl_Obj *path,		/* Pathname of directory to be removed
 				 * (UTF-8). */
-    int recursive;		/* If non-zero, removes directories that
+    int recursive,		/* If non-zero, removes directories that
 				 * are nonempty.  Otherwise, will only remove
 				 * empty directories. */
-    Tcl_Obj **errorPtr;	        /* If non-NULL, to be filled with UTF-8 name 
-                       	         * of file causing error. */
+    Tcl_Obj **errorPtr)		/* If non-NULL, to be filled with UTF-8 name
+				 * of file causing error. */
 {
-    TestReport("removedirectory",path,NULL);
-    return Tcl_FSRemoveDirectory(TestReportGetNativePath(path), recursive, 
-				 errorPtr);
+    TestReport("removedirectory", path, NULL);
+    return Tcl_FSRemoveDirectory(TestReportGetNativePath(path), recursive,
+	    errorPtr);
 }
-static CONST char**
-TestReportFileAttrStrings(fileName, objPtrRef)
-    Tcl_Obj* fileName;
-    Tcl_Obj** objPtrRef;
+
+static const char **
+TestReportFileAttrStrings(
+    Tcl_Obj *fileName,
+    Tcl_Obj **objPtrRef)
 {
-    TestReport("fileattributestrings",fileName,NULL);
+    TestReport("fileattributestrings", fileName, NULL);
     return Tcl_FSFileAttrStrings(TestReportGetNativePath(fileName), objPtrRef);
 }
+
 static int
-TestReportFileAttrsGet(interp, index, fileName, objPtrRef)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int index;			/* index of the attribute command. */
-    Tcl_Obj *fileName;		/* filename we are operating on. */
-    Tcl_Obj **objPtrRef;	/* for output. */
+TestReportFileAttrsGet(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int index,			/* index of the attribute command. */
+    Tcl_Obj *fileName,		/* filename we are operating on. */
+    Tcl_Obj **objPtrRef)	/* for output. */
 {
-    TestReport("fileattributesget",fileName,NULL);
-    return Tcl_FSFileAttrsGet(interp, index, 
-			      TestReportGetNativePath(fileName), objPtrRef);
+    TestReport("fileattributesget", fileName, NULL);
+    return Tcl_FSFileAttrsGet(interp, index,
+	    TestReportGetNativePath(fileName), objPtrRef);
 }
+
 static int
-TestReportFileAttrsSet(interp, index, fileName, objPtr)
-    Tcl_Interp *interp;		/* The interpreter for error reporting. */
-    int index;			/* index of the attribute command. */
-    Tcl_Obj *fileName;		/* filename we are operating on. */
-    Tcl_Obj *objPtr;		/* for input. */
-{
-    TestReport("fileattributesset",fileName,objPtr);
-    return Tcl_FSFileAttrsSet(interp, index, 
-			      TestReportGetNativePath(fileName), objPtr);
-}
-static int 
-TestReportUtime (fileName, tval)
-    Tcl_Obj* fileName;
-    struct utimbuf *tval;
-{
-    TestReport("utime",fileName,NULL);
+TestReportFileAttrsSet(
+    Tcl_Interp *interp,		/* The interpreter for error reporting. */
+    int index,			/* index of the attribute command. */
+    Tcl_Obj *fileName,		/* filename we are operating on. */
+    Tcl_Obj *objPtr)		/* for input. */
+{
+    TestReport("fileattributesset", fileName, objPtr);
+    return Tcl_FSFileAttrsSet(interp, index,
+	    TestReportGetNativePath(fileName), objPtr);
+}
+
+static int
+TestReportUtime(
+    Tcl_Obj *fileName,
+    struct utimbuf *tval)
+{
+    TestReport("utime", fileName, NULL);
     return Tcl_FSUtime(TestReportGetNativePath(fileName), tval);
 }
+
 static int
-TestReportNormalizePath(interp, pathPtr, nextCheckpoint)
-    Tcl_Interp *interp;
-    Tcl_Obj *pathPtr;
-    int nextCheckpoint;
+TestReportNormalizePath(
+    Tcl_Interp *interp,
+    Tcl_Obj *pathPtr,
+    int nextCheckpoint)
 {
-    TestReport("normalizepath",pathPtr,NULL);
+    TestReport("normalizepath", pathPtr, NULL);
     return nextCheckpoint;
 }
 
-static int 
-SimplePathInFilesystem(Tcl_Obj *pathPtr, ClientData *clientDataPtr) {
-    CONST char *str = Tcl_GetString(pathPtr);
-    if (strncmp(str,"simplefs:/",10)) {
+static int
+SimplePathInFilesystem(
+    Tcl_Obj *pathPtr,
+    ClientData *clientDataPtr)
+{
+    const char *str = Tcl_GetString(pathPtr);
+
+    if (strncmp(str, "simplefs:/", 10)) {
 	return -1;
     }
     return TCL_OK;
 }
 
-/* 
- * Since TclCopyChannel insists on an interpreter, we use this
- * to simplify our test scripts.  Would be better if it could
- * copy without an interp
- */
-static Tcl_Interp *simpleInterpPtr = NULL;
-/* We use this to ensure we clean up after ourselves */
-static Tcl_Obj *tempFile = NULL;
-
-/* 
- * This is a very 'hacky' filesystem which is used just to 
- * test two important features of the vfs code: (1) that
- * you can load a shared library from a vfs, (2) that when
- * copying files from one fs to another, the 'mtime' is
- * preserved.
- * 
- * It treats any file in 'simplefs:/' as a file, and
- * artificially creates a real file on the fly which it uses
- * to extract information from.  The real file it uses is
- * whatever follows the trailing '/' (e.g. 'foo' in 'simplefs:/foo'),
- * and that file is assumed to exist in the native pwd, and is
- * copied over to the native temporary directory where it is
- * accessed.
- * 
- * Please do not consider this filesystem a model of how
- * things are to be done.  It is quite the opposite!  But, it
- * does allow us to test two important features.
- * 
- * Finally: this fs can only be used from one interpreter.
+/*
+ * This is a slightly 'hacky' filesystem which is used just to test a few
+ * important features of the vfs code: (1) that you can load a shared library
+ * from a vfs, (2) that when copying files from one fs to another, the 'mtime'
+ * is preserved. (3) that recursive cross-filesystem directory copies have the
+ * correct behaviour with/without -force.
+ *
+ * It treats any file in 'simplefs:/' as a file, which it routes to the
+ * current directory. The real file it uses is whatever follows the trailing
+ * '/' (e.g. 'foo' in 'simplefs:/foo'), and that file exists or not according
+ * to what is in the native pwd.
+ *
+ * Please do not consider this filesystem a model of how things are to be
+ * done. It is quite the opposite!  But, it does allow us to test some
+ * important features.
  */
+
 static int
-TestSimpleFilesystemObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;
-    Tcl_Interp *interp;
-    int		objc;
-    Tcl_Obj	*CONST objv[];
+TestSimpleFilesystemObjCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
 {
     int res, boolVal;
     char *msg;
-    
+
     if (objc != 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "boolean");
 	return TCL_ERROR;
@@ -6425,129 +6957,138 @@ TestSimpleFilesystemObjCmd(dummy, interp, objc, objv)
     if (boolVal) {
 	res = Tcl_FSRegister((ClientData)interp, &simpleFilesystem);
 	msg = (res == TCL_OK) ? "registered" : "failed";
-	simpleInterpPtr = interp;
     } else {
-	if (tempFile != NULL) {
-	    Tcl_FSDeleteFile(tempFile);
-	    Tcl_DecrRefCount(tempFile);
-	    tempFile = NULL;
-	}
 	res = Tcl_FSUnregister(&simpleFilesystem);
 	msg = (res == TCL_OK) ? "unregistered" : "failed";
-	simpleInterpPtr = NULL;
     }
     Tcl_SetResult(interp, msg, TCL_VOLATILE);
     return res;
 }
 
-/* 
- * Treats a file name 'simplefs:/foo' by copying the file 'foo'
- * in the current (native) directory to a temporary native file,
- * and then returns that native file.
+/*
+ * Treats a file name 'simplefs:/foo' by using the file 'foo' in the current
+ * (native) directory.
  */
-static Tcl_Obj*
-SimpleCopy(pathPtr)
-    Tcl_Obj *pathPtr;                   /* Name of file to copy. */
+
+static Tcl_Obj *
+SimpleRedirect(
+    Tcl_Obj *pathPtr)		/* Name of file to copy. */
 {
-    int res;
-    CONST char *str;
+    int len;
+    const char *str;
     Tcl_Obj *origPtr;
-    Tcl_Obj *tempPtr;
-
-    tempPtr = TclpTempFileName();
-    Tcl_IncrRefCount(tempPtr);
 
-    /* 
+    /*
      * We assume the same name in the current directory is ok.
      */
-    str = Tcl_GetString(pathPtr);
+
+    str = Tcl_GetStringFromObj(pathPtr, &len);
+    if (len < 10 || strncmp(str, "simplefs:/", 10)) {
+	/* Probably shouldn't ever reach here */
+	Tcl_IncrRefCount(pathPtr);
+	return pathPtr;
+    }
     origPtr = Tcl_NewStringObj(str+10,-1);
     Tcl_IncrRefCount(origPtr);
+    return origPtr;
+}
 
-    res = TclCrossFilesystemCopy(simpleInterpPtr, origPtr, tempPtr);
-    Tcl_DecrRefCount(origPtr);
+static int
+SimpleMatchInDirectory(
+    Tcl_Interp *interp,		/* Interpreter for error
+				 * messages. */
+    Tcl_Obj *resultPtr,		/* Object to lappend results. */
+    Tcl_Obj *dirPtr,		/* Contains path to directory to search. */
+    const char *pattern,	/* Pattern to match against. */
+    Tcl_GlobTypeData *types)	/* Object containing list of acceptable types.
+				 * May be NULL. */
+{
+    int res;
+    Tcl_Obj *origPtr;
+    Tcl_Obj *resPtr;
 
-    if (res != TCL_OK) {
-	Tcl_FSDeleteFile(tempPtr);
-	Tcl_DecrRefCount(tempPtr);
-	return NULL;
+    /* We only provide a new volume, therefore no mounts at all */
+    if (types != NULL && types->type & TCL_GLOB_TYPE_MOUNT) {
+	return TCL_OK;
     }
-    return tempPtr;
+
+    /*
+     * We assume the same name in the current directory is ok.
+     */
+    resPtr = Tcl_NewObj();
+    Tcl_IncrRefCount(resPtr);
+    origPtr = SimpleRedirect(dirPtr);
+    res = Tcl_FSMatchInDirectory(interp, resPtr, origPtr, pattern, types);
+    if (res == TCL_OK) {
+	int gLength, j;
+	Tcl_ListObjLength(NULL, resPtr, &gLength);
+	for (j = 0; j < gLength; j++) {
+	    Tcl_Obj *gElt, *nElt;
+	    Tcl_ListObjIndex(NULL, resPtr, j, &gElt);
+	    nElt = Tcl_NewStringObj("simplefs:/",10);
+	    Tcl_AppendObjToObj(nElt, gElt);
+	    Tcl_ListObjAppendElement(NULL, resultPtr, nElt);
+	}
+    }
+    Tcl_DecrRefCount(origPtr);
+    Tcl_DecrRefCount(resPtr);
+    return res;
 }
 
 static Tcl_Channel
-SimpleOpenFileChannel(interp, pathPtr, mode, permissions)
-    Tcl_Interp *interp;                 /* Interpreter for error reporting;
-					 * can be NULL. */
-    Tcl_Obj *pathPtr;                   /* Name of file to open. */
-    int mode;             		/* POSIX open mode. */
-    int permissions;                    /* If the open involves creating a
-					 * file, with what modes to create
-					 * it? */
+SimpleOpenFileChannel(
+    Tcl_Interp *interp,		/* Interpreter for error reporting; can be
+				 * NULL. */
+    Tcl_Obj *pathPtr,		/* Name of file to open. */
+    int mode,			/* POSIX open mode. */
+    int permissions)		/* If the open involves creating a file, with
+				 * what modes to create it? */
 {
     Tcl_Obj *tempPtr;
     Tcl_Channel chan;
-    
+
     if ((mode != 0) && !(mode & O_RDONLY)) {
-	Tcl_AppendResult(interp, "read-only", 
-		(char *) NULL);
-	return NULL;
-    }
-    
-    tempPtr = SimpleCopy(pathPtr);
-    
-    if (tempPtr == NULL) {
+	Tcl_AppendResult(interp, "read-only", NULL);
 	return NULL;
     }
-    
-    chan = Tcl_FSOpenFileChannel(interp, tempPtr, "r", permissions);
 
-    if (tempFile != NULL) {
-        Tcl_FSDeleteFile(tempFile);
-	Tcl_DecrRefCount(tempFile);
-	tempFile = NULL;
-    }
-    /* 
-     * Store file pointer in this global variable so we can delete
-     * it later 
-     */
-    tempFile = tempPtr;
+    tempPtr = SimpleRedirect(pathPtr);
+    chan = Tcl_FSOpenFileChannel(interp, tempPtr, "r", permissions);
+    Tcl_DecrRefCount(tempPtr);
     return chan;
 }
 
 static int
-SimpleAccess(pathPtr, mode)
-    Tcl_Obj *pathPtr;		/* Path of file to access (in current CP). */
-    int mode;                   /* Permission setting. */
+SimpleAccess(
+    Tcl_Obj *pathPtr,		/* Path of file to access (in current CP). */
+    int mode)			/* Permission setting. */
 {
-    /* All files exist */
-    return TCL_OK;
+    Tcl_Obj *tempPtr = SimpleRedirect(pathPtr);
+    int res = Tcl_FSAccess(tempPtr, mode);
+
+    Tcl_DecrRefCount(tempPtr);
+    return res;
 }
 
 static int
-SimpleStat(pathPtr, bufPtr)
-    Tcl_Obj *pathPtr;		/* Path of file to stat (in current CP). */
-    Tcl_StatBuf *bufPtr;	/* Filled with results of stat call. */
+SimpleStat(
+    Tcl_Obj *pathPtr,		/* Path of file to stat (in current CP). */
+    Tcl_StatBuf *bufPtr)	/* Filled with results of stat call. */
 {
-    Tcl_Obj *tempPtr = SimpleCopy(pathPtr);
-    if (tempPtr == NULL) {
-	/* We just pretend the file exists anyway */
-	return TCL_OK;
-    } else {
-	int res = Tcl_FSStat(tempPtr, bufPtr);
-	Tcl_FSDeleteFile(tempPtr);
-	Tcl_DecrRefCount(tempPtr);
-	return res;
-    }
+    Tcl_Obj *tempPtr = SimpleRedirect(pathPtr);
+    int res = Tcl_FSStat(tempPtr, bufPtr);
+
+    Tcl_DecrRefCount(tempPtr);
+    return res;
 }
 
-static Tcl_Obj*
+static Tcl_Obj *
 SimpleListVolumes(void)
 {
     /* Add one new volume */
     Tcl_Obj *retVal;
 
-    retVal = Tcl_NewStringObj("simplefs:/",-1);
+    retVal = Tcl_NewStringObj("simplefs:/", -1);
     Tcl_IncrRefCount(retVal);
     return retVal;
 }
@@ -6555,15 +7096,17 @@ SimpleListVolumes(void)
 /*
  * Used to check correct string-length determining in Tcl_NumUtfChars
  */
+
 static int
-TestNumUtfCharsCmd(clientData, interp, objc, objv)
-    ClientData clientData;
-    Tcl_Interp *interp;
-    int objc;
-    Tcl_Obj *CONST objv[];
+TestNumUtfCharsCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
 {
     if (objc > 1) {
 	int len = -1;
+
 	if (objc > 2) {
 	    (void) Tcl_GetStringFromObj(objv[1], &len);
 	}
@@ -6582,14 +7125,14 @@ TestNumUtfCharsCmd(clientData, interp, objc, objv)
  *	Retrieves CPU ID information.
  *
  * Usage:
- *	testcpuid <eax>
+ *	testwincpuid <eax>
  *
  * Parameters:
  *	eax - The value to pass in the EAX register to a CPUID instruction.
  *
  * Results:
- *	Returns a four-element list containing the values from the
- *	EAX, EBX, ECX and EDX registers returned from the CPUID instruction.
+ *	Returns a four-element list containing the values from the EAX, EBX,
+ *	ECX and EDX registers returned from the CPUID instruction.
  *
  * Side effects:
  *	None.
@@ -6598,35 +7141,453 @@ TestNumUtfCharsCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestcpuidCmd( ClientData dummy,
-		 Tcl_Interp* interp, /* Tcl interpreter */
-		 int objc,	/* Parameter count */
-		 Tcl_Obj *CONST * objv ) /* Parameter vector */
+TestcpuidCmd(
+    ClientData dummy,
+    Tcl_Interp* interp,		/* Tcl interpreter */
+    int objc,			/* Parameter count */
+    Tcl_Obj *const * objv)	/* Parameter vector */
 {
-    int status;
-    int index;
+    int status, index, i;
     unsigned int regs[4];
-    Tcl_Obj * regsObjs[4];
-    int i;
+    Tcl_Obj *regsObjs[4];
 
-    if ( objc != 2 ) {
-	Tcl_WrongNumArgs( interp, 1, objv, "eax" );
+    if (objc != 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "eax");
 	return TCL_ERROR;
     }
-    if ( Tcl_GetIntFromObj( interp, objv[1], &index ) != TCL_OK ) {
+    if (Tcl_GetIntFromObj(interp, objv[1], &index) != TCL_OK) {
 	return TCL_ERROR;
     }
-    status = TclWinCPUID( (unsigned int) index, regs );
-    if ( status != TCL_OK ) {
-	Tcl_SetObjResult( interp, Tcl_NewStringObj( "operation not available",
-						    -1 ) );
+    status = TclWinCPUID((unsigned) index, regs);
+    if (status != TCL_OK) {
+	Tcl_SetObjResult(interp,
+		Tcl_NewStringObj("operation not available", -1));
 	return status;
     }
-    for ( i = 0; i < 4; ++i ) {
-	regsObjs[i] = Tcl_NewIntObj( (int) regs[i] );
+    for (i=0 ; i<4 ; ++i) {
+	regsObjs[i] = Tcl_NewIntObj((int) regs[i]);
     }
-    Tcl_SetObjResult( interp, Tcl_NewListObj( 4, regsObjs ) );
+    Tcl_SetObjResult(interp, Tcl_NewListObj(4, regsObjs));
     return TCL_OK;
-
 }
 #endif
+
+/*
+ * Used to do basic checks of the TCL_HASH_KEY_SYSTEM_HASH flag
+ */
+
+static int
+TestHashSystemHashCmd(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int objc,
+    Tcl_Obj *const objv[])
+{
+    static Tcl_HashKeyType hkType = {
+	TCL_HASH_KEY_TYPE_VERSION, TCL_HASH_KEY_SYSTEM_HASH,
+	NULL, NULL, NULL, NULL
+    };
+    Tcl_HashTable hash;
+    Tcl_HashEntry *hPtr;
+    int i, isNew, limit = 100;
+
+    if (objc>1 && Tcl_GetIntFromObj(interp, objv[1], &limit)!=TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    Tcl_InitCustomHashTable(&hash, TCL_CUSTOM_TYPE_KEYS, &hkType);
+
+    if (hash.numEntries != 0) {
+	Tcl_AppendResult(interp, "non-zero initial size", NULL);
+	Tcl_DeleteHashTable(&hash);
+	return TCL_ERROR;
+    }
+
+    for (i=0 ; i<limit ; i++) {
+	hPtr = Tcl_CreateHashEntry(&hash, (char *) INT2PTR(i), &isNew);
+	if (!isNew) {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(i));
+	    Tcl_AppendToObj(Tcl_GetObjResult(interp)," creation problem",-1);
+	    Tcl_DeleteHashTable(&hash);
+	    return TCL_ERROR;
+	}
+	Tcl_SetHashValue(hPtr, (ClientData) INT2PTR(i+42));
+    }
+
+    if (hash.numEntries != limit) {
+	Tcl_AppendResult(interp, "unexpected maximal size", NULL);
+	Tcl_DeleteHashTable(&hash);
+	return TCL_ERROR;
+    }
+
+    for (i=0 ; i<limit ; i++) {
+	hPtr = Tcl_FindHashEntry(&hash, (char *) INT2PTR(i));
+	if (hPtr == NULL) {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(i));
+	    Tcl_AppendToObj(Tcl_GetObjResult(interp)," lookup problem",-1);
+	    Tcl_DeleteHashTable(&hash);
+	    return TCL_ERROR;
+	}
+	if (PTR2INT(Tcl_GetHashValue(hPtr)) != i+42) {
+	    Tcl_SetObjResult(interp, Tcl_NewIntObj(i));
+	    Tcl_AppendToObj(Tcl_GetObjResult(interp)," value problem",-1);
+	    Tcl_DeleteHashTable(&hash);
+	    return TCL_ERROR;
+	}
+	Tcl_DeleteHashEntry(hPtr);
+    }
+
+    if (hash.numEntries != 0) {
+	Tcl_AppendResult(interp, "non-zero final size", NULL);
+	Tcl_DeleteHashTable(&hash);
+	return TCL_ERROR;
+    }
+
+    Tcl_DeleteHashTable(&hash);
+    Tcl_AppendResult(interp, "OK", NULL);
+    return TCL_OK;
+}
+
+/*
+ * Used for testing Tcl_GetInt which is no longer used directly by the
+ * core very much.
+ */
+static int
+TestgetintCmd(
+    ClientData dummy,
+    Tcl_Interp *interp,
+    int argc,
+    const char **argv)
+{
+    if (argc < 2) {
+	Tcl_SetResult(interp, "wrong # args", TCL_STATIC);
+	return TCL_ERROR;
+    } else {
+	int val, i, total=0;
+	char buf[TCL_INTEGER_SPACE];
+
+	for (i=1 ; i<argc ; i++) {
+	    if (Tcl_GetInt(interp, argv[i], &val) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    total += val;
+	}
+	TclFormatInt(buf, total);
+	Tcl_SetResult(interp, buf, TCL_VOLATILE);
+	return TCL_OK;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TestconcatobjCmd --
+ *
+ *	This procedure implements the "testconcatobj" command. It is used
+ *	to test that Tcl_ConcatObj does indeed return a fresh Tcl_Obj in all
+ *	cases and thet it never corrupts its arguments. In other words, that
+ *	[Bug 1447328] was fixed properly.
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TestconcatobjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    const char **argv)		/* Argument strings. */
+{
+    Tcl_Obj *list1Ptr, *list2Ptr, *emptyPtr, *concatPtr, *tmpPtr;
+    int result = TCL_OK, len;
+    Tcl_Obj *objv[3];
+
+    /*
+     * Set the start of the error message as obj result; it will be cleared at
+     * the end if no errors were found.
+     */
+
+    Tcl_SetObjResult(interp,
+	    Tcl_NewStringObj("Tcl_ConcatObj is unsafe:", -1));
+
+    emptyPtr = Tcl_NewObj();
+
+    list1Ptr = Tcl_NewStringObj("foo bar sum", -1);
+    Tcl_ListObjLength(NULL, list1Ptr, &len);
+    if (list1Ptr->bytes != NULL) {
+	ckfree((char *) list1Ptr->bytes);
+	list1Ptr->bytes = NULL;
+    }
+
+    list2Ptr = Tcl_NewStringObj("eeny meeny", -1);
+    Tcl_ListObjLength(NULL, list2Ptr, &len);
+    if (list2Ptr->bytes != NULL) {
+	ckfree((char *) list2Ptr->bytes);
+	list2Ptr->bytes = NULL;
+    }
+
+    /*
+     * Verify that concat'ing a list obj with one or more empty strings does
+     * return a fresh Tcl_Obj (see also [Bug 2055782]).
+     */
+
+    tmpPtr = Tcl_DuplicateObj(list1Ptr);
+
+    objv[0] = tmpPtr;
+    objv[1] = emptyPtr;
+    concatPtr = Tcl_ConcatObj(2, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (a) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (a) concatObj is not a new obj ",
+		NULL);
+	switch (tmpPtr->refCount) {
+	case 0:
+	    Tcl_AppendResult(interp, "(no new refCount)", NULL);
+	    break;
+	case 1:
+	    Tcl_AppendResult(interp, "(refCount added)", NULL);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(more than one refCount added!)", NULL);
+	    Tcl_Panic("extremely unsafe behaviour by Tcl_ConcatObj()");
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[0] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    Tcl_IncrRefCount(tmpPtr);
+    concatPtr = Tcl_ConcatObj(2, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (b) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (b) concatObj is not a new obj ",
+		NULL);
+	switch (tmpPtr->refCount) {
+	case 0:
+	    Tcl_AppendResult(interp, "(refCount removed?)", NULL);
+	    Tcl_Panic("extremely unsafe behaviour by Tcl_ConcatObj()");
+	    break;
+	case 1:
+	    Tcl_AppendResult(interp, "(no new refCount)", NULL);
+	    break;
+	case 2:
+	    Tcl_AppendResult(interp, "(refCount added)", NULL);
+	    Tcl_DecrRefCount(tmpPtr);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(more than one refCount added!)", NULL);
+	    Tcl_Panic("extremely unsafe behaviour by Tcl_ConcatObj()");
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[0] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    objv[0] = emptyPtr;
+    objv[1] = tmpPtr;
+    objv[2] = emptyPtr;
+    concatPtr = Tcl_ConcatObj(3, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (c) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (c) concatObj is not a new obj ",
+		NULL);
+	switch (tmpPtr->refCount) {
+	case 0:
+	    Tcl_AppendResult(interp, "(no new refCount)", NULL);
+	    break;
+	case 1:
+	    Tcl_AppendResult(interp, "(refCount added)", NULL);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(more than one refCount added!)", NULL);
+	    Tcl_Panic("extremely unsafe behaviour by Tcl_ConcatObj()");
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[1] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    Tcl_IncrRefCount(tmpPtr);
+    concatPtr = Tcl_ConcatObj(3, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (d) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (d) concatObj is not a new obj ",
+		NULL);
+	switch (tmpPtr->refCount) {
+	case 0:
+	    Tcl_AppendResult(interp, "(refCount removed?)", NULL);
+	    Tcl_Panic("extremely unsafe behaviour by Tcl_ConcatObj()");
+	    break;
+	case 1:
+	    Tcl_AppendResult(interp, "(no new refCount)", NULL);
+	    break;
+	case 2:
+	    Tcl_AppendResult(interp, "(refCount added)", NULL);
+	    Tcl_DecrRefCount(tmpPtr);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(more than one refCount added!)", NULL);
+	    Tcl_Panic("extremely unsafe behaviour by Tcl_ConcatObj()");
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[1] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    /*
+     * Verify that an unshared list is not corrupted when concat'ing things to
+     * it.
+     */
+
+    objv[0] = tmpPtr;
+    objv[1] = list2Ptr;
+    concatPtr = Tcl_ConcatObj(2, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (e) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	int len;
+
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (e) concatObj is not a new obj ",
+		NULL);
+
+	(void) Tcl_ListObjLength(NULL, concatPtr, &len);
+	switch (tmpPtr->refCount) {
+	case 3:
+	    Tcl_AppendResult(interp, "(failed to concat)", NULL);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(corrupted input!)", NULL);
+	}
+	if (Tcl_IsShared(tmpPtr)) {
+	    Tcl_DecrRefCount(tmpPtr);
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[0] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    objv[0] = tmpPtr;
+    objv[1] = list2Ptr;
+    Tcl_IncrRefCount(tmpPtr);
+    concatPtr = Tcl_ConcatObj(2, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (f) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	int len;
+
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (f) concatObj is not a new obj ",
+		NULL);
+
+	(void) Tcl_ListObjLength(NULL, concatPtr, &len);
+	switch (tmpPtr->refCount) {
+	case 3:
+	    Tcl_AppendResult(interp, "(failed to concat)", NULL);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(corrupted input!)", NULL);
+	}
+	if (Tcl_IsShared(tmpPtr)) {
+	    Tcl_DecrRefCount(tmpPtr);
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[0] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    objv[0] = tmpPtr;
+    objv[1] = list2Ptr;
+    Tcl_IncrRefCount(tmpPtr);
+    Tcl_IncrRefCount(tmpPtr);
+    concatPtr = Tcl_ConcatObj(2, objv);
+    if (concatPtr->refCount != 0) {
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp,
+		"\n\t* (g) concatObj does not have refCount 0", NULL);
+    }
+    if (concatPtr == tmpPtr) {
+	int len;
+
+	result = TCL_ERROR;
+	Tcl_AppendResult(interp, "\n\t* (g) concatObj is not a new obj ",
+		NULL);
+
+	(void) Tcl_ListObjLength(NULL, concatPtr, &len);
+	switch (tmpPtr->refCount) {
+	case 3:
+	    Tcl_AppendResult(interp, "(failed to concat)", NULL);
+	    break;
+	default:
+	    Tcl_AppendResult(interp, "(corrupted input!)", NULL);
+	}
+	Tcl_DecrRefCount(tmpPtr);
+	if (Tcl_IsShared(tmpPtr)) {
+	    Tcl_DecrRefCount(tmpPtr);
+	}
+	tmpPtr = Tcl_DuplicateObj(list1Ptr);
+	objv[0] = tmpPtr;
+    }
+    Tcl_DecrRefCount(concatPtr);
+
+    /*
+     * Clean everything up. Note that we don't actually know how many
+     * references there are to tmpPtr here; in the no-error case, it should be
+     * five... [Bug 2895367]
+     */
+
+    Tcl_DecrRefCount(list1Ptr);
+    Tcl_DecrRefCount(list2Ptr);
+    Tcl_DecrRefCount(emptyPtr);
+    while (tmpPtr->refCount > 1) {
+	Tcl_DecrRefCount(tmpPtr);
+    }
+    Tcl_DecrRefCount(tmpPtr);
+
+    if (result == TCL_OK) {
+	Tcl_ResetResult(interp);
+    }
+    return result;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/generic/tclTestObj.c b/generic/tclTestObj.c
index 8e9dc93..f113cfe 100644
--- a/generic/tclTestObj.c
+++ b/generic/tclTestObj.c
@@ -1,61 +1,57 @@
-/* 
+/*
  * tclTestObj.c --
  *
- *	This file contains C command procedures for the additional Tcl
- *	commands that are used for testing implementations of the Tcl object
- *	types. These commands are not normally included in Tcl
- *	applications; they're only used for testing.
+ *	This file contains C command functions for the additional Tcl commands
+ *	that are used for testing implementations of the Tcl object types.
+ *	These commands are not normally included in Tcl applications; they're
+ *	only used for testing.
  *
  * Copyright (c) 1995-1998 Sun Microsystems, Inc.
  * Copyright (c) 1999 by Scriptics Corporation.
+ * Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
+#include "tommath.h"
 
 /*
  * An array of Tcl_Obj pointers used in the commands that operate on or get
- * the values of Tcl object-valued variables. varPtr[i] is the i-th
- * variable's Tcl_Obj *.
+ * the values of Tcl object-valued variables. varPtr[i] is the i-th variable's
+ * Tcl_Obj *.
  */
 
 #define NUMBER_OF_OBJECT_VARS 20
 static Tcl_Obj *varPtr[NUMBER_OF_OBJECT_VARS];
 
 /*
- * Forward declarations for procedures defined later in this file:
+ * Forward declarations for functions defined later in this file:
  */
 
-static int		CheckIfVarUnset _ANSI_ARGS_((Tcl_Interp *interp,
-			    int varIndex));
-static int		GetVariableIndex _ANSI_ARGS_((Tcl_Interp *interp,
-			    char *string, int *indexPtr));
-static void		SetVarToObj _ANSI_ARGS_((int varIndex,
-			    Tcl_Obj *objPtr));
-int			TclObjTest_Init _ANSI_ARGS_((Tcl_Interp *interp));
-static int		TestbooleanobjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestconvertobjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestdoubleobjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestindexobjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestintobjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TestobjCmd _ANSI_ARGS_((ClientData dummy,
-			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
-static int		TeststringobjCmd _ANSI_ARGS_((ClientData dummy,
+static int		CheckIfVarUnset(Tcl_Interp *interp, int varIndex);
+static int		GetVariableIndex(Tcl_Interp *interp,
+			    const char *string, int *indexPtr);
+static void		SetVarToObj(int varIndex, Tcl_Obj *objPtr);
+int			TclObjTest_Init(Tcl_Interp *interp);
+static int		TestbignumobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestbooleanobjCmd(ClientData dummy,
 			    Tcl_Interp *interp, int objc,
-			    Tcl_Obj *CONST objv[]));
+			    Tcl_Obj *const objv[]);
+static int		TestdoubleobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestindexobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestintobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int 		TestlistobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		TestobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
+static int		TeststringobjCmd(ClientData dummy, Tcl_Interp *interp,
+			    int objc, Tcl_Obj *const objv[]);
 
 typedef struct TestString {
     int numChars;
@@ -63,14 +59,13 @@ typedef struct TestString {
     size_t uallocated;
     Tcl_UniChar unicode[2];
 } TestString;
-
 
 /*
  *----------------------------------------------------------------------
  *
  * TclObjTest_Init --
  *
- *	This procedure creates additional commands that are used to test the
+ *	This function creates additional commands that are used to test the
  *	Tcl object support.
  *
  * Results:
@@ -84,154 +79,213 @@ typedef struct TestString {
  */
 
 int
-TclObjTest_Init(interp)
-    Tcl_Interp *interp;
+TclObjTest_Init(
+    Tcl_Interp *interp)
 {
     register int i;
-    
+
     for (i = 0;  i < NUMBER_OF_OBJECT_VARS;  i++) {
         varPtr[i] = NULL;
     }
-	
+
+    Tcl_CreateObjCommand(interp, "testbignumobj", TestbignumobjCmd,
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testbooleanobj", TestbooleanobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "testconvertobj", TestconvertobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testdoubleobj", TestdoubleobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testintobj", TestintobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "testindexobj", TestindexobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
-    Tcl_CreateObjCommand(interp, "testobj", TestobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testlistobj", TestlistobjCmd,
+	    (ClientData) 0, NULL);
+    Tcl_CreateObjCommand(interp, "testobj", TestobjCmd, (ClientData) 0, NULL);
     Tcl_CreateObjCommand(interp, "teststringobj", TeststringobjCmd,
-	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
+	    (ClientData) 0, NULL);
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TestbooleanobjCmd --
+ * TestbignumobjCmd --
  *
- *	This procedure implements the "testbooleanobj" command.  It is used
- *	to test the boolean Tcl object type implementation.
+ *	This function implmenets the "testbignumobj" command.  It is used
+ *	to exercise the bignum Tcl object type implementation.
  *
  * Results:
- *	A standard Tcl object result.
+ *	Returns a standard Tcl object result.
  *
  * Side effects:
- *	Creates and frees boolean objects, and also converts objects to
- *	have boolean type.
+ *	Creates and frees bignum objects; converts objects to have bignum
+ *	type.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-TestbooleanobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestbignumobjCmd(
+    ClientData clientData,	/* unused */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int objc,			/* Argument count */
+    Tcl_Obj *const objv[])	/* Argument vector */
 {
-    int varIndex, boolValue;
-    char *index, *subCmd;
+    const char * subcmds[] = {
+	"set",      "get",      "mult10",      "div10", NULL
+    };
+    enum options {
+	BIGNUM_SET, BIGNUM_GET, BIGNUM_MULT10, BIGNUM_DIV10
+    };
+
+    int index, varIndex;
+    char* string;
+    mp_int bignumValue, newValue;
 
     if (objc < 3) {
-	wrongNumArgs:
-	Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?");
+	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg?...");
 	return TCL_ERROR;
     }
-
-    index = Tcl_GetString(objv[2]);
-    if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) {
+    if (Tcl_GetIndexFromObj(interp, objv[1], subcmds, "option", 0,
+	    &index) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    string = Tcl_GetString(objv[2]);
+    if (GetVariableIndex(interp, string, &varIndex) != TCL_OK) {
 	return TCL_ERROR;
     }
 
-    subCmd = Tcl_GetString(objv[1]);
-    if (strcmp(subCmd, "set") == 0) {
+    switch (index) {
+    case BIGNUM_SET:
 	if (objc != 4) {
-	    goto wrongNumArgs;
+	    Tcl_WrongNumArgs(interp, 2, objv, "var value");
+	    return TCL_ERROR;
 	}
-	if (Tcl_GetBooleanFromObj(interp, objv[3], &boolValue) != TCL_OK) {
+	string = Tcl_GetString(objv[3]);
+	if (mp_init(&bignumValue) != MP_OKAY) {
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("error in mp_init", -1));
+	    return TCL_ERROR;
+	}
+	if (mp_read_radix(&bignumValue, string, 10) != MP_OKAY) {
+	    mp_clear(&bignumValue);
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("error in mp_read_radix", -1));
 	    return TCL_ERROR;
 	}
 
 	/*
 	 * If the object currently bound to the variable with index varIndex
 	 * has ref count 1 (i.e. the object is unshared) we can modify that
-	 * object directly. Otherwise, if RC>1 (i.e. the object is shared),
+	 * object directly.  Otherwise, if RC>1 (i.e. the object is shared),
 	 * we must create a new object to modify/set and decrement the old
 	 * formerly-shared object's ref count. This is "copy on write".
 	 */
 
 	if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
-	    Tcl_SetBooleanObj(varPtr[varIndex], boolValue);
+	    Tcl_SetBignumObj(varPtr[varIndex], &bignumValue);
 	} else {
-	    SetVarToObj(varIndex, Tcl_NewBooleanObj(boolValue));
+	    SetVarToObj(varIndex, Tcl_NewBignumObj(&bignumValue));
 	}
-	Tcl_SetObjResult(interp, varPtr[varIndex]);
-    } else if (strcmp(subCmd, "get") == 0) {
+	break;
+
+    case BIGNUM_GET:
 	if (objc != 3) {
-	    goto wrongNumArgs;
+	    Tcl_WrongNumArgs(interp, 2, objv, "varIndex");
+	    return TCL_ERROR;
 	}
 	if (CheckIfVarUnset(interp, varIndex)) {
 	    return TCL_ERROR;
 	}
-	Tcl_SetObjResult(interp, varPtr[varIndex]);
-    } else if (strcmp(subCmd, "not") == 0) {
+	break;
+
+    case BIGNUM_MULT10:
 	if (objc != 3) {
-	    goto wrongNumArgs;
+	    Tcl_WrongNumArgs(interp, 2, objv, "varIndex");
+	    return TCL_ERROR;
 	}
 	if (CheckIfVarUnset(interp, varIndex)) {
 	    return TCL_ERROR;
 	}
-	if (Tcl_GetBooleanFromObj(interp, varPtr[varIndex],
-				  &boolValue) != TCL_OK) {
+	if (Tcl_GetBignumFromObj(interp, varPtr[varIndex],
+		&bignumValue) != TCL_OK) {
 	    return TCL_ERROR;
 	}
+	if (mp_init(&newValue) != MP_OKAY
+		|| (mp_mul_d(&bignumValue, 10, &newValue) != MP_OKAY)) {
+	    mp_clear(&bignumValue);
+	    mp_clear(&newValue);
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("error in mp_mul_d", -1));
+	    return TCL_ERROR;
+	}
+	mp_clear(&bignumValue);
 	if (!Tcl_IsShared(varPtr[varIndex])) {
-	    Tcl_SetBooleanObj(varPtr[varIndex], !boolValue);
+	    Tcl_SetBignumObj(varPtr[varIndex], &newValue);
 	} else {
-	    SetVarToObj(varIndex, Tcl_NewBooleanObj(!boolValue));
+	    SetVarToObj(varIndex, Tcl_NewBignumObj(&newValue));
+	}
+	break;
+
+    case BIGNUM_DIV10:
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "varIndex");
+	    return TCL_ERROR;
+	}
+	if (CheckIfVarUnset(interp, varIndex)) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBignumFromObj(interp, varPtr[varIndex],
+		&bignumValue) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (mp_init(&newValue) != MP_OKAY
+		|| (mp_div_d(&bignumValue, 10, &newValue, NULL) != MP_OKAY)) {
+	    mp_clear(&bignumValue);
+	    mp_clear(&newValue);
+	    Tcl_SetObjResult(interp,
+		    Tcl_NewStringObj("error in mp_div_d", -1));
+	    return TCL_ERROR;
+	}
+	mp_clear(&bignumValue);
+	if (!Tcl_IsShared(varPtr[varIndex])) {
+	    Tcl_SetBignumObj(varPtr[varIndex], &newValue);
+	} else {
+	    SetVarToObj(varIndex, Tcl_NewBignumObj(&newValue));
 	}
-	Tcl_SetObjResult(interp, varPtr[varIndex]);
-    } else {
-	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"bad option \"", Tcl_GetString(objv[1]),
-		"\": must be set, get, or not", (char *) NULL);
-	return TCL_ERROR;
     }
+
+    Tcl_SetObjResult(interp, varPtr[varIndex]);
     return TCL_OK;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TestconvertobjCmd --
+ * TestbooleanobjCmd --
  *
- *	This procedure implements the "testconvertobj" command. It is used
- *	to test converting objects to new types.
+ *	This function implements the "testbooleanobj" command.  It is used to
+ *	test the boolean Tcl object type implementation.
  *
  * Results:
  *	A standard Tcl object result.
  *
  * Side effects:
- *	Converts objects to new types.
+ *	Creates and frees boolean objects, and also converts objects to
+ *	have boolean type.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-TestconvertobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestbooleanobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    char *subCmd;
-    char buf[20];
+    int varIndex, boolValue;
+    char *index, *subCmd;
 
     if (objc < 3) {
 	wrongNumArgs:
@@ -239,22 +293,63 @@ TestconvertobjCmd(clientData, interp, objc, objv)
 	return TCL_ERROR;
     }
 
+    index = Tcl_GetString(objv[2]);
+    if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
     subCmd = Tcl_GetString(objv[1]);
-    if (strcmp(subCmd, "double") == 0) {
-	double d;
+    if (strcmp(subCmd, "set") == 0) {
+	if (objc != 4) {
+	    goto wrongNumArgs;
+	}
+	if (Tcl_GetBooleanFromObj(interp, objv[3], &boolValue) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * If the object currently bound to the variable with index varIndex
+	 * has ref count 1 (i.e. the object is unshared) we can modify that
+	 * object directly. Otherwise, if RC>1 (i.e. the object is shared),
+	 * we must create a new object to modify/set and decrement the old
+	 * formerly-shared object's ref count. This is "copy on write".
+	 */
 
+	if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
+	    Tcl_SetBooleanObj(varPtr[varIndex], boolValue);
+	} else {
+	    SetVarToObj(varIndex, Tcl_NewBooleanObj(boolValue));
+	}
+	Tcl_SetObjResult(interp, varPtr[varIndex]);
+    } else if (strcmp(subCmd, "get") == 0) {
 	if (objc != 3) {
 	    goto wrongNumArgs;
 	}
-	if (Tcl_GetDoubleFromObj(interp, objv[2], &d) != TCL_OK) {
+	if (CheckIfVarUnset(interp, varIndex)) {
 	    return TCL_ERROR;
 	}
-	sprintf(buf, "%f", d);
-        Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1);
+	Tcl_SetObjResult(interp, varPtr[varIndex]);
+    } else if (strcmp(subCmd, "not") == 0) {
+	if (objc != 3) {
+	    goto wrongNumArgs;
+	}
+	if (CheckIfVarUnset(interp, varIndex)) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetBooleanFromObj(interp, varPtr[varIndex],
+				  &boolValue) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (!Tcl_IsShared(varPtr[varIndex])) {
+	    Tcl_SetBooleanObj(varPtr[varIndex], !boolValue);
+	} else {
+	    SetVarToObj(varIndex, Tcl_NewBooleanObj(!boolValue));
+	}
+	Tcl_SetObjResult(interp, varPtr[varIndex]);
     } else {
 	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
 		"bad option \"", Tcl_GetString(objv[1]),
-		"\": must be double", (char *) NULL);
+		"\": must be set, get, or not", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -265,8 +360,8 @@ TestconvertobjCmd(clientData, interp, objc, objv)
  *
  * TestdoubleobjCmd --
  *
- *	This procedure implements the "testdoubleobj" command.  It is used
- *	to test the double-precision floating point Tcl object type
+ *	This function implements the "testdoubleobj" command.  It is used to
+ *	test the double-precision floating point Tcl object type
  *	implementation.
  *
  * Results:
@@ -280,16 +375,16 @@ TestconvertobjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestdoubleobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestdoubleobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int varIndex;
     double doubleValue;
     char *index, *subCmd, *string;
-	
+
     if (objc < 3) {
 	wrongNumArgs:
 	Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?");
@@ -314,8 +409,8 @@ TestdoubleobjCmd(clientData, interp, objc, objv)
 	/*
 	 * If the object currently bound to the variable with index varIndex
 	 * has ref count 1 (i.e. the object is unshared) we can modify that
-	 * object directly. Otherwise, if RC>1 (i.e. the object is shared),
-	 * we must create a new object to modify/set and decrement the old
+	 * object directly. Otherwise, if RC>1 (i.e. the object is shared), we
+	 * must create a new object to modify/set and decrement the old
 	 * formerly-shared object's ref count. This is "copy on write".
 	 */
 
@@ -370,7 +465,7 @@ TestdoubleobjCmd(clientData, interp, objc, objv)
     } else {
 	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
 		"bad option \"", Tcl_GetString(objv[1]),
-		"\": must be set, get, mult10, or div10", (char *) NULL);
+		"\": must be set, get, mult10, or div10", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -381,7 +476,7 @@ TestdoubleobjCmd(clientData, interp, objc, objv)
  *
  * TestindexobjCmd --
  *
- *	This procedure implements the "testindexobj" command. It is used to
+ *	This function implements the "testindexobj" command. It is used to
  *	test the index Tcl object type implementation.
  *
  * Results:
@@ -395,15 +490,15 @@ TestdoubleobjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestindexobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestindexobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int allowAbbrev, index, index2, setError, i, result;
-    CONST char **argv;
-    static CONST char *tablePtr[] = {"a", "b", "check", (char *) NULL};
+    const char **argv;
+    static const char *tablePtr[] = {"a", "b", "check", NULL};
     /*
      * Keep this structure declaration in sync with tclIndexObj.c
      */
@@ -417,20 +512,19 @@ TestindexobjCmd(clientData, interp, objc, objv)
     if ((objc == 3) && (strcmp(Tcl_GetString(objv[1]),
 	    "check") == 0)) {
 	/*
-	 * This code checks to be sure that the results of
-	 * Tcl_GetIndexFromObj are properly cached in the object and
-	 * returned on subsequent lookups.
+	 * This code checks to be sure that the results of Tcl_GetIndexFromObj
+	 * are properly cached in the object and returned on subsequent
+	 * lookups.
 	 */
 
 	if (Tcl_GetIntFromObj(interp, objv[2], &index2) != TCL_OK) {
 	    return TCL_ERROR;
 	}
 
-	Tcl_GetIndexFromObj((Tcl_Interp *) NULL, objv[1], tablePtr,
-		"token", 0, &index);
-	indexRep = (struct IndexRep *) objv[1]->internalRep.otherValuePtr;
+	Tcl_GetIndexFromObj(NULL, objv[1], tablePtr, "token", 0, &index);
+	indexRep = (struct IndexRep *) objv[1]->internalRep.twoPtrValue.ptr1;
 	indexRep->index = index2;
-	result = Tcl_GetIndexFromObj((Tcl_Interp *) NULL, objv[1],
+	result = Tcl_GetIndexFromObj(NULL, objv[1],
 		tablePtr, "token", 0, &index);
 	if (result == TCL_OK) {
 	    Tcl_SetIntObj(Tcl_GetObjResult(interp), index);
@@ -450,22 +544,22 @@ TestindexobjCmd(clientData, interp, objc, objv)
 	return TCL_ERROR;
     }
 
-    argv = (CONST char **) ckalloc((unsigned) ((objc-3) * sizeof(char *)));
+    argv = (const char **) ckalloc((unsigned) ((objc-3) * sizeof(char *)));
     for (i = 4; i < objc; i++) {
 	argv[i-4] = Tcl_GetString(objv[i]);
     }
     argv[objc-4] = NULL;
-    
+
     /*
-     * Tcl_GetIndexFromObj assumes that the table is statically-allocated
-     * so that its address is different for each index object. If we
-     * accidently allocate a table at the same address as that cached in
-     * the index object, clear out the object's cached state.
+     * Tcl_GetIndexFromObj assumes that the table is statically-allocated so
+     * that its address is different for each index object. If we accidently
+     * allocate a table at the same address as that cached in the index
+     * object, clear out the object's cached state.
      */
 
     if ( objv[3]->typePtr != NULL
 	 && !strcmp( "index", objv[3]->typePtr->name ) ) {
-	indexRep = (struct IndexRep *) objv[3]->internalRep.otherValuePtr;
+	indexRep = (struct IndexRep *) objv[3]->internalRep.twoPtrValue.ptr1;
 	if (indexRep->tablePtr == (VOID *) argv) {
 	    objv[3]->typePtr->freeIntRepProc(objv[3]);
 	    objv[3]->typePtr = NULL;
@@ -486,7 +580,7 @@ TestindexobjCmd(clientData, interp, objc, objv)
  *
  * TestintobjCmd --
  *
- *	This procedure implements the "testintobj" command. It is used to
+ *	This function implements the "testintobj" command. It is used to
  *	test the int Tcl object type implementation.
  *
  * Results:
@@ -500,16 +594,16 @@ TestindexobjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestintobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestintobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int intValue, varIndex, i;
     long longValue;
     char *index, *subCmd, *string;
-	
+
     if (objc < 3) {
 	wrongNumArgs:
 	Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?");
@@ -535,8 +629,8 @@ TestintobjCmd(clientData, interp, objc, objv)
 	/*
 	 * If the object currently bound to the variable with index varIndex
 	 * has ref count 1 (i.e. the object is unshared) we can modify that
-	 * object directly. Otherwise, if RC>1 (i.e. the object is shared),
-	 * we must create a new object to modify/set and decrement the old
+	 * object directly. Otherwise, if RC>1 (i.e. the object is shared), we
+	 * must create a new object to modify/set and decrement the old
 	 * formerly-shared object's ref count. This is "copy on write".
 	 */
 
@@ -616,18 +710,18 @@ TestintobjCmd(clientData, interp, objc, objv)
 	Tcl_AppendToObj(Tcl_GetObjResult(interp), string, -1);
     } else if (strcmp(subCmd, "inttoobigtest") == 0) {
 	/*
-	 * If long ints have more bits than ints on this platform, verify
-	 * that Tcl_GetIntFromObj returns an error if the long int held
-	 * in an integer object's internal representation is too large
-	 * to fit in an int.
+	 * If long ints have more bits than ints on this platform, verify that
+	 * Tcl_GetIntFromObj returns an error if the long int held in an
+	 * integer object's internal representation is too large to fit in an
+	 * int.
 	 */
-	
+
 	if (objc != 3) {
 	    goto wrongNumArgs;
 	}
 #if (INT_MAX == LONG_MAX)   /* int is same size as long int */
 	Tcl_AppendToObj(Tcl_GetObjResult(interp), "1", -1);
-#else 
+#else
 	if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
 	    Tcl_SetLongObj(varPtr[varIndex], LONG_MAX);
 	} else {
@@ -677,19 +771,114 @@ TestintobjCmd(clientData, interp, objc, objv)
     } else {
 	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
 		"bad option \"", Tcl_GetString(objv[1]),
-		"\": must be set, get, get2, mult10, or div10",
-		(char *) NULL);
+		"\": must be set, get, get2, mult10, or div10", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
 }
 
 /*
+ *-----------------------------------------------------------------------------
+ *
+ * TestlistobjCmd --
+ *
+ *	This function implements the 'testlistobj' command. It is used to
+ *	test a few possible corner cases in list object manipulation from
+ *	C code that cannot occur at the Tcl level.
+ *
+ * Results:
+ *	A standard Tcl object result.
+ *
+ * Side effects:
+ *	Creates, manipulates and frees list objects.
+ *
+ *-----------------------------------------------------------------------------
+ */
+
+static int
+TestlistobjCmd(
+    ClientData clientData,	/* Not used */
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int objc,			/* Number of arguments */
+    Tcl_Obj *const objv[])	/* Argument objects */
+{
+    /* Subcommands supported by this command */
+    const char* subcommands[] = {
+	"set",
+	"get",
+	"replace"
+    };
+    enum listobjCmdIndex {
+	LISTOBJ_SET,
+	LISTOBJ_GET,
+	LISTOBJ_REPLACE
+    };
+
+    const char* index;		/* Argument giving the variable number */
+    int varIndex;		/* Variable number converted to binary */
+    int cmdIndex;		/* Ordinal number of the subcommand */
+    int first;			/* First index in the list */
+    int count;			/* Count of elements in a list */
+
+    if (objc < 3) {
+	Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg...?");
+	return TCL_ERROR;
+    }
+    index = Tcl_GetString(objv[2]);
+    if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    if (Tcl_GetIndexFromObj(interp, objv[1], subcommands, "command",
+			    0, &cmdIndex) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    switch(cmdIndex) {
+    case LISTOBJ_SET:
+	if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) {
+	    Tcl_SetListObj(varPtr[varIndex], objc-3, objv+3);
+	} else {
+	    SetVarToObj(varIndex, Tcl_NewListObj(objc-3, objv+3));
+	}
+	Tcl_SetObjResult(interp, varPtr[varIndex]);
+	break;
+
+    case LISTOBJ_GET:
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "varIndex");
+	    return TCL_ERROR;
+	}
+	if (CheckIfVarUnset(interp, varIndex)) {
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, varPtr[varIndex]);
+	break;
+
+    case LISTOBJ_REPLACE:
+	if (objc < 5) {
+	    Tcl_WrongNumArgs(interp, 2, objv,
+			     "varIndex start count ?element...?");
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetIntFromObj(interp, objv[3], &first) != TCL_OK
+	    || Tcl_GetIntFromObj(interp, objv[4], &count) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (Tcl_IsShared(varPtr[varIndex])) {
+	    SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex]));
+	}
+	Tcl_ResetResult(interp);
+	return Tcl_ListObjReplace(interp, varPtr[varIndex], first, count,
+				  objc-5, objv+5);
+    }
+    return TCL_OK;
+}
+
+/*
  *----------------------------------------------------------------------
  *
  * TestobjCmd --
  *
- *	This procedure implements the "testobj" command. It is used to test
+ *	This function implements the "testobj" command. It is used to test
  *	the type-independent portions of the Tcl object type implementation.
  *
  * Results:
@@ -702,16 +891,16 @@ TestintobjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TestobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TestobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int varIndex, destIndex, i;
     char *index, *subCmd, *string;
     Tcl_ObjType *targetType;
-	
+
     if (objc < 2) {
 	wrongNumArgs:
 	Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?");
@@ -762,7 +951,7 @@ TestobjCmd(clientData, interp, objc, objv)
         typeName = Tcl_GetString(objv[3]);
         if ((targetType = Tcl_GetObjType(typeName)) == NULL) {
 	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		    "no type ", typeName, " found", (char *) NULL);
+		    "no type ", typeName, " found", NULL);
             return TCL_ERROR;
         }
         if (Tcl_ConvertToType(interp, varPtr[varIndex], targetType)
@@ -821,13 +1010,13 @@ TestobjCmd(clientData, interp, objc, objv)
         SetVarToObj(varIndex, Tcl_NewObj());
 	Tcl_SetObjResult(interp, varPtr[varIndex]);
     } else if (strcmp(subCmd, "objtype") == 0) {
-	char *typeName;
+	const char *typeName;
 
 	/*
 	 * return an object containing the name of the argument's type
 	 * of internal rep.  If none exists, return "none".
 	 */
-	
+
         if (objc != 3) {
             goto wrongNumArgs;
         }
@@ -879,11 +1068,9 @@ TestobjCmd(clientData, interp, objc, objv)
 	}
     } else {
 	Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"bad option \"",
-		Tcl_GetString(objv[1]),
-		"\": must be assign, convert, duplicate, freeallvars, ",
-		"newobj, objcount, objtype, refcount, type, or types",
-		(char *) NULL);
+		"bad option \"", Tcl_GetString(objv[1]),
+		"\": must be assign, convert, duplicate, freeallvars, "
+		"newobj, objcount, objtype, refcount, type, or types", NULL);
 	return TCL_ERROR;
     }
     return TCL_OK;
@@ -894,7 +1081,7 @@ TestobjCmd(clientData, interp, objc, objv)
  *
  * TeststringobjCmd --
  *
- *	This procedure implements the "teststringobj" command. It is used to
+ *	This function implements the "teststringobj" command. It is used to
  *	test the string Tcl object type implementation.
  *
  * Results:
@@ -908,21 +1095,21 @@ TestobjCmd(clientData, interp, objc, objv)
  */
 
 static int
-TeststringobjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+TeststringobjCmd(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     int varIndex, option, i, length;
     Tcl_UniChar *unicode;
 #define MAX_STRINGS 11
     char *index, *string, *strings[MAX_STRINGS+1];
     TestString *strPtr;
-    static CONST char *options[] = {
+    static const char *options[] = {
 	"append", "appendstrings", "get", "get2", "length", "length2",
-	"set", "set2", "setlength", "ualloc", "getunicode", 
-	"appendself", "appendself2", (char *) NULL
+	"set", "set2", "setlength", "ualloc", "getunicode",
+	"appendself", "appendself2", NULL
     };
 
     if (objc < 3) {
@@ -951,12 +1138,12 @@ TeststringobjCmd(clientData, interp, objc, objv)
 	    if (varPtr[varIndex] == NULL) {
 		SetVarToObj(varIndex, Tcl_NewObj());
 	    }
-	    
+
 	    /*
 	     * If the object bound to variable "varIndex" is shared, we must
-	     * "copy on write" and append to a copy of the object. 
+	     * "copy on write" and append to a copy of the object.
 	     */
-	    
+
 	    if (Tcl_IsShared(varPtr[varIndex])) {
 		SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex]));
 	    }
@@ -974,7 +1161,7 @@ TeststringobjCmd(clientData, interp, objc, objv)
 
 	    /*
 	     * If the object bound to variable "varIndex" is shared, we must
-	     * "copy on write" and append to a copy of the object. 
+	     * "copy on write" and append to a copy of the object.
 	     */
 
 	    if (Tcl_IsShared(varPtr[varIndex])) {
@@ -1024,7 +1211,7 @@ TeststringobjCmd(clientData, interp, objc, objv)
 	    }
 	    if (varPtr[varIndex] != NULL) {
 		strPtr = (TestString *)
-		    (varPtr[varIndex])->internalRep.otherValuePtr;
+		    (varPtr[varIndex])->internalRep.twoPtrValue.ptr1;
 		length = (int) strPtr->allocated;
 	    } else {
 		length = -1;
@@ -1038,13 +1225,13 @@ TeststringobjCmd(clientData, interp, objc, objv)
 
 	    /*
 	     * If the object currently bound to the variable with index
-	     * varIndex has ref count 1 (i.e. the object is unshared) we
-	     * can modify that object directly. Otherwise, if RC>1 (i.e.
-	     * the object is shared), we must create a new object to
-	     * modify/set and decrement the old formerly-shared object's
-	     * ref count. This is "copy on write".
+	     * varIndex has ref count 1 (i.e. the object is unshared) we can
+	     * modify that object directly. Otherwise, if RC>1 (i.e. the
+	     * object is shared), we must create a new object to modify/set
+	     * and decrement the old formerly-shared object's ref count. This
+	     * is "copy on write".
 	     */
-    
+
 	    string = Tcl_GetStringFromObj(objv[3], &length);
 	    if ((varPtr[varIndex] != NULL)
 		    && !Tcl_IsShared(varPtr[varIndex])) {
@@ -1077,7 +1264,7 @@ TeststringobjCmd(clientData, interp, objc, objv)
 	    }
 	    if (varPtr[varIndex] != NULL) {
 		strPtr = (TestString *)
-		    (varPtr[varIndex])->internalRep.otherValuePtr;
+		    (varPtr[varIndex])->internalRep.twoPtrValue.ptr1;
 		length = (int) strPtr->uallocated;
 	    } else {
 		length = -1;
@@ -1169,17 +1356,17 @@ TeststringobjCmd(clientData, interp, objc, objv)
  *	None.
  *
  * Side effects:
- *	This routine handles ref counting details for assignment:
- *	i.e. the old value's ref count must be decremented (if not NULL) and
- *	the new one incremented (also if not NULL).
+ *	This routine handles ref counting details for assignment: i.e. the old
+ *	value's ref count must be decremented (if not NULL) and the new one
+ *	incremented (also if not NULL).
  *
  *----------------------------------------------------------------------
  */
 
 static void
-SetVarToObj(varIndex, objPtr)
-    int varIndex;		/* Designates the assignment variable. */
-    Tcl_Obj *objPtr;		/* Points to object to assign to var. */
+SetVarToObj(
+    int varIndex,		/* Designates the assignment variable. */
+    Tcl_Obj *objPtr)		/* Points to object to assign to var. */
 {
     if (varPtr[varIndex] != NULL) {
 	Tcl_DecrRefCount(varPtr[varIndex]);
@@ -1207,15 +1394,15 @@ SetVarToObj(varIndex, objPtr)
  */
 
 static int
-GetVariableIndex(interp, string, indexPtr)
-    Tcl_Interp *interp;         /* Interpreter for error reporting. */
-    char *string;               /* String containing a variable index
-				 * specified as a nonnegative number less
-				 * than NUMBER_OF_OBJECT_VARS. */
-    int *indexPtr;              /* Place to store converted result. */
+GetVariableIndex(
+    Tcl_Interp *interp,		/* Interpreter for error reporting. */
+    const char *string,		/* String containing a variable index
+				 * specified as a nonnegative number less than
+				 * NUMBER_OF_OBJECT_VARS. */
+    int *indexPtr)		/* Place to store converted result. */
 {
     int index;
-    
+
     if (Tcl_GetInt(interp, string, &index) != TCL_OK) {
 	return TCL_ERROR;
     }
@@ -1234,7 +1421,7 @@ GetVariableIndex(interp, string, indexPtr)
  *
  * CheckIfVarUnset --
  *
- *	Utility procedure that checks whether a test variable is readable:
+ *	Utility function that checks whether a test variable is readable:
  *	i.e., that varPtr[varIndex] is non-NULL.
  *
  * Results:
@@ -1248,13 +1435,13 @@ GetVariableIndex(interp, string, indexPtr)
  */
 
 static int
-CheckIfVarUnset(interp, varIndex)
-    Tcl_Interp *interp;		/* Interpreter for error reporting. */
-    int varIndex;		/* Index of the test variable to check. */
+CheckIfVarUnset(
+    Tcl_Interp *interp,		/* Interpreter for error reporting. */
+    int varIndex)		/* Index of the test variable to check. */
 {
     if (varPtr[varIndex] == NULL) {
 	char buf[32 + TCL_INTEGER_SPACE];
-	
+
 	sprintf(buf, "variable %d is unset (NULL)", varIndex);
 	Tcl_ResetResult(interp);
 	Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1);
@@ -1262,3 +1449,11 @@ CheckIfVarUnset(interp, varIndex)
     }
     return 0;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclTestProcBodyObj.c b/generic/tclTestProcBodyObj.c
index c85b303..644179b 100644
--- a/generic/tclTestProcBodyObj.c
+++ b/generic/tclTestProcBodyObj.c
@@ -1,14 +1,14 @@
-/* 
+/*
  * tclTestProcBodyObj.c --
  *
- *	Implements the "procbodytest" package, which contains commands
- *	to test creation of Tcl procedures whose body argument is a
- *	Tcl_Obj of type "procbody" rather than a string.
+ *	Implements the "procbodytest" package, which contains commands to test
+ *	creation of Tcl procedures whose body argument is a Tcl_Obj of type
+ *	"procbody" rather than a string.
  *
  * Copyright (c) 1998 by Scriptics Corporation.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
@@ -17,14 +17,14 @@
  * name and version of this package
  */
 
-static CONST char packageName[] = "procbodytest";
-static CONST char packageVersion[] = "1.0";
+static const char packageName[] = "procbodytest";
+static const char packageVersion[] = "1.0";
 
 /*
  * Name of the commands exported by this package
  */
 
-static CONST char procCommand[] = "proc";
+static const char procCommand[] = "proc";
 
 /*
  * this struct describes an entry in the table of command names and command
@@ -33,7 +33,7 @@ static CONST char procCommand[] = "proc";
 
 typedef struct CmdTable
 {
-    CONST char *cmdName;	/* command name */
+    const char *cmdName;	/* command name */
     Tcl_ObjCmdProc *proc;	/* command proc */
     int exportIt;		/* if 1, export the command */
 } CmdTable;
@@ -42,31 +42,26 @@ typedef struct CmdTable
  * Declarations for functions defined in this file.
  */
 
-static int	ProcBodyTestProcObjCmd _ANSI_ARGS_((ClientData dummy,
-			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-static int	ProcBodyTestInitInternal _ANSI_ARGS_((Tcl_Interp *interp,
-			int isSafe));
-static int	RegisterCommand _ANSI_ARGS_((Tcl_Interp* interp,
-			CONST char *namespace, CONST CmdTable *cmdTablePtr));
-int             Procbodytest_Init _ANSI_ARGS_((Tcl_Interp * interp));
-int             Procbodytest_SafeInit _ANSI_ARGS_((Tcl_Interp * interp));
+static int	ProcBodyTestProcObjCmd(ClientData dummy,
+			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);
+static int	ProcBodyTestInitInternal(Tcl_Interp *interp, int isSafe);
+static int	RegisterCommand(Tcl_Interp* interp,
+			const char *namespace, const CmdTable *cmdTablePtr);
+int             Procbodytest_Init(Tcl_Interp * interp);
+int             Procbodytest_SafeInit(Tcl_Interp * interp);
 
 /*
  * List of commands to create when the package is loaded; must go after the
  * declarations of the enable command procedure.
  */
 
-static CONST CmdTable commands[] =
-{
+static CONST CmdTable commands[] = {
     { procCommand,	ProcBodyTestProcObjCmd,	1 },
-
     { 0, 0, 0 }
 };
 
-static CONST CmdTable safeCommands[] =
-{
+static CONST CmdTable safeCommands[] = {
     { procCommand,	ProcBodyTestProcObjCmd,	1 },
-
     { 0, 0, 0 }
 };
 
@@ -75,7 +70,7 @@ static CONST CmdTable safeCommands[] =
  *
  * Procbodytest_Init --
  *
- *  This procedure initializes the "procbodytest" package.
+ *  This function initializes the "procbodytest" package.
  *
  * Results:
  *  A standard Tcl result.
@@ -87,8 +82,8 @@ static CONST CmdTable safeCommands[] =
  */
 
 int
-Procbodytest_Init(interp)
-    Tcl_Interp *interp;		/* the Tcl interpreter for which the package
+Procbodytest_Init(
+    Tcl_Interp *interp)		/* the Tcl interpreter for which the package
                                  * is initialized */
 {
     return ProcBodyTestInitInternal(interp, 0);
@@ -99,7 +94,7 @@ Procbodytest_Init(interp)
  *
  * Procbodytest_SafeInit --
  *
- *  This procedure initializes the "procbodytest" package.
+ *  This function initializes the "procbodytest" package.
  *
  * Results:
  *  A standard Tcl result.
@@ -111,8 +106,8 @@ Procbodytest_Init(interp)
  */
 
 int
-Procbodytest_SafeInit(interp)
-    Tcl_Interp *interp;		/* the Tcl interpreter for which the package
+Procbodytest_SafeInit(
+    Tcl_Interp *interp)		/* the Tcl interpreter for which the package
                                  * is initialized */
 {
     return ProcBodyTestInitInternal(interp, 1);
@@ -123,7 +118,7 @@ Procbodytest_SafeInit(interp)
  *
  * RegisterCommand --
  *
- *  This procedure registers a command in the context of the given namespace.
+ *  This function registers a command in the context of the given namespace.
  *
  * Results:
  *  A standard Tcl result.
@@ -135,11 +130,11 @@ Procbodytest_SafeInit(interp)
  */
 
 static int RegisterCommand(interp, namespace, cmdTablePtr)
-    Tcl_Interp* interp;			/* the Tcl interpreter for which the
-                                         * operation is performed */
-    CONST char *namespace;		/* the namespace in which the command
-                                         * is registered */
-    CONST CmdTable *cmdTablePtr;	/* the command to register */
+    Tcl_Interp* interp;		/* the Tcl interpreter for which the operation
+				 * is performed */
+    const char *namespace;		/* the namespace in which the command is
+				 * registered */
+    const CmdTable *cmdTablePtr;/* the command to register */
 {
     char buf[128];
 
@@ -149,7 +144,7 @@ static int RegisterCommand(interp, namespace, cmdTablePtr)
         if (Tcl_Eval(interp, buf) != TCL_OK)
             return TCL_ERROR;
     }
-    
+
     sprintf(buf, "%s::%s", namespace, cmdTablePtr->cmdName);
     Tcl_CreateObjCommand(interp, buf, cmdTablePtr->proc, 0, 0);
 
@@ -161,7 +156,7 @@ static int RegisterCommand(interp, namespace, cmdTablePtr)
  *
  * ProcBodyTestInitInternal --
  *
- *  This procedure initializes the Loader package.
+ *  This function initializes the Loader package.
  *  The isSafe flag is 1 if the interpreter is safe, 0 otherwise.
  *
  * Results:
@@ -174,10 +169,10 @@ static int RegisterCommand(interp, namespace, cmdTablePtr)
  */
 
 static int
-ProcBodyTestInitInternal(interp, isSafe)
-    Tcl_Interp *interp;		/* the Tcl interpreter for which the package
+ProcBodyTestInitInternal(
+    Tcl_Interp *interp,		/* the Tcl interpreter for which the package
                                  * is initialized */
-    int isSafe;			/* 1 if this is a safe interpreter */
+    int isSafe)			/* 1 if this is a safe interpreter */
 {
     CONST CmdTable *cmdTablePtr;
 
@@ -187,7 +182,7 @@ ProcBodyTestInitInternal(interp, isSafe)
             return TCL_ERROR;
         }
     }
-    
+
     return Tcl_PkgProvide(interp, packageName, packageVersion);
 }
 
@@ -225,20 +220,20 @@ ProcBodyTestInitInternal(interp, isSafe)
  */
 
 static int
-ProcBodyTestProcObjCmd (dummy, interp, objc, objv)
-    ClientData dummy;		/* context; not used */
-    Tcl_Interp *interp;		/* the current interpreter */
-    int objc;			/* argument count */
-    Tcl_Obj *CONST objv[];	/* arguments */
+ProcBodyTestProcObjCmd(
+    ClientData dummy,		/* context; not used */
+    Tcl_Interp *interp,		/* the current interpreter */
+    int objc,			/* argument count */
+    Tcl_Obj *const objv[])	/* arguments */
 {
     char *fullName;
     Tcl_Command procCmd;
     Command *cmdPtr;
-    Proc *procPtr = (Proc *) NULL;
+    Proc *procPtr = NULL;
     Tcl_Obj *bodyObjPtr;
     Tcl_Obj *myobjv[5];
     int result;
-    
+
     if (objc != 4) {
 	Tcl_WrongNumArgs(interp, 1, objv, "newName argsList bodyName");
 	return TCL_ERROR;
@@ -247,10 +242,9 @@ ProcBodyTestProcObjCmd (dummy, interp, objc, objv)
     /*
      * Find the Command pointer to this procedure
      */
-    
-    fullName = Tcl_GetStringFromObj(objv[3], (int *) NULL);
-    procCmd = Tcl_FindCommand(interp, fullName, (Tcl_Namespace *) NULL,
-            TCL_LEAVE_ERR_MSG);
+
+    fullName = Tcl_GetStringFromObj(objv[3], NULL);
+    procCmd = Tcl_FindCommand(interp, fullName, NULL, TCL_LEAVE_ERR_MSG);
     if (procCmd == NULL) {
         return TCL_ERROR;
     }
@@ -259,38 +253,27 @@ ProcBodyTestProcObjCmd (dummy, interp, objc, objv)
 
     /*
      * check that this is a procedure and not a builtin command:
-     * If a procedure, cmdPtr->objProc is either 0 or TclObjInterpProc,
-     * and cmdPtr->proc is either 0 or TclProcInterpProc.
-     * Also, the compile proc should be 0, but we don't check for that.
+     * If a procedure, cmdPtr->objProc is TclObjInterpProc.
      */
 
-    if (((cmdPtr->objProc != NULL)
-            && (cmdPtr->objProc != TclGetObjInterpProc()))
-            || ((cmdPtr->proc != NULL)
-                    && (cmdPtr->proc != TclGetInterpProc()))) {
+    if (cmdPtr->objProc != TclGetObjInterpProc()) {
         Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-		"command \"", fullName,
-		"\" is not a Tcl procedure", (char *) NULL);
+		"command \"", fullName, "\" is not a Tcl procedure", NULL);
         return TCL_ERROR;
     }
 
     /*
      * it is a Tcl procedure: the client data is the Proc structure
      */
-    
-    if (cmdPtr->objProc != NULL) {
-        procPtr = (Proc *) cmdPtr->objClientData;
-    } else if (cmdPtr->proc != NULL) {
-        procPtr = (Proc *) cmdPtr->clientData;
-    }
 
+    procPtr = (Proc *) cmdPtr->objClientData;
     if (procPtr == NULL) {
         Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
 		"procedure \"", fullName,
-		"\" does not have a Proc struct!", (char *) NULL);
+		"\" does not have a Proc struct!", NULL);
         return TCL_ERROR;
     }
-        
+
     /*
      * create a new object, initialize our argument vector, call into Tcl
      */
@@ -299,7 +282,7 @@ ProcBodyTestProcObjCmd (dummy, interp, objc, objv)
     if (bodyObjPtr == NULL) {
         Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
 		"failed to create a procbody object for procedure \"",
-                fullName, "\"", (char *) NULL);
+                fullName, "\"", NULL);
         return TCL_ERROR;
     }
     Tcl_IncrRefCount(bodyObjPtr);
@@ -308,10 +291,18 @@ ProcBodyTestProcObjCmd (dummy, interp, objc, objv)
     myobjv[1] = objv[1];
     myobjv[2] = objv[2];
     myobjv[3] = bodyObjPtr;
-    myobjv[4] = (Tcl_Obj *) NULL;
+    myobjv[4] = NULL;
 
     result = Tcl_ProcObjCmd((ClientData) NULL, interp, objc, myobjv);
     Tcl_DecrRefCount(bodyObjPtr);
 
     return result;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclThread.c b/generic/tclThread.c
index c2f769d..8384107 100644
--- a/generic/tclThread.c
+++ b/generic/tclThread.c
@@ -1,22 +1,21 @@
-/* 
+/*
  * tclThread.c --
  *
- *	This file implements   Platform independent thread operations.
- *	Most of the real work is done in the platform dependent files.
+ *	This file implements Platform independent thread operations. Most of
+ *	the real work is done in the platform dependent files.
  *
  * Copyright (c) 1998 by Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
 /*
- * There are three classes of synchronization objects:
- * mutexes, thread data keys, and condition variables.
- * The following are used to record the memory used for these
- * objects so they can be finalized.
+ * There are three classes of synchronization objects: mutexes, thread data
+ * keys, and condition variables. The following are used to record the memory
+ * used for these objects so they can be finalized.
  *
  * These statics are guarded by the mutex in the caller of
  * TclRememberThreadData, e.g., TclpThreadDataKeyInit
@@ -33,19 +32,19 @@ static SyncObjRecord mutexRecord = {0, 0, NULL};
 static SyncObjRecord condRecord = {0, 0, NULL};
 
 /*
- * Prototypes of functions used only in this file
+ * Prototypes of functions used only in this file.
  */
- 
-static void		RememberSyncObject _ANSI_ARGS_((char *objPtr,
-			    SyncObjRecord *recPtr));
-static void		ForgetSyncObject _ANSI_ARGS_((char *objPtr,
-			    SyncObjRecord *recPtr));
 
-/* 
+static void		ForgetSyncObject(char *objPtr, SyncObjRecord *recPtr);
+static void		RememberSyncObject(char *objPtr,
+			    SyncObjRecord *recPtr);
+
+/*
  * Several functions are #defined to nothing in tcl.h if TCL_THREADS is not
- * specified.  Here we undo that so the procedures are defined in the
- * stubs table.
+ * specified. Here we undo that so the functions are defined in the stubs
+ * table.
  */
+
 #ifndef TCL_THREADS
 #undef Tcl_MutexLock
 #undef Tcl_MutexUnlock
@@ -54,61 +53,51 @@ static void		ForgetSyncObject _ANSI_ARGS_((char *objPtr,
 #undef Tcl_ConditionWait
 #undef Tcl_ConditionFinalize
 #endif
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_GetThreadData --
  *
- *	This procedure allocates and initializes a chunk of thread
- *	local storage.
+ *	This function allocates and initializes a chunk of thread local
+ *	storage.
  *
  * Results:
  *	A thread-specific pointer to the data structure.
  *
  * Side effects:
- *	Will allocate memory the first time this thread calls for
- *	this chunk of storage.
+ *	Will allocate memory the first time this thread calls for this chunk
+ *	of storage.
  *
  *----------------------------------------------------------------------
  */
 
-VOID *
-Tcl_GetThreadData(keyPtr, size)
-    Tcl_ThreadDataKey *keyPtr;	/* Identifier for the data chunk */
-    int size;			/* Size of storage block */
+void *
+Tcl_GetThreadData(
+    Tcl_ThreadDataKey *keyPtr,	/* Identifier for the data chunk */
+    int size)			/* Size of storage block */
 {
-    VOID *result;
+    void *result;
 #ifdef TCL_THREADS
-
-    /*
-     * See if this is the first thread to init this key.
-     */
-
-    if (*keyPtr == NULL) {
-	TclpThreadDataKeyInit(keyPtr);
-    }
-
     /*
      * Initialize the key for this thread.
      */
-
     result = TclpThreadDataKeyGet(keyPtr);
+
     if (result == NULL) {
-	result  = (VOID *)ckalloc((size_t)size);
-	memset(result, 0, (size_t)size);
+	result = ckalloc((size_t) size);
+	memset(result, 0, (size_t) size);
 	TclpThreadDataKeySet(keyPtr, result);
     }
-#else
+#else /* TCL_THREADS */
     if (*keyPtr == NULL) {
-	result = (VOID *)ckalloc((size_t)size);
-	memset((char *)result, 0, (size_t)size);
+	result = ckalloc((size_t) size);
+	memset(result, 0, (size_t) size);
 	*keyPtr = (Tcl_ThreadDataKey)result;
-	TclRememberDataKey(keyPtr);
+	RememberSyncObject((char *) keyPtr, &keyRecord);
     }
-    result = *(VOID **)keyPtr;
-#endif
+    result = * (void **) keyPtr;
+#endif /* TCL_THREADS */
     return result;
 }
 
@@ -117,11 +106,11 @@ Tcl_GetThreadData(keyPtr, size)
  *
  * TclThreadDataKeyGet --
  *
- *	This procedure returns a pointer to a block of thread local storage.
+ *	This function returns a pointer to a block of thread local storage.
  *
  * Results:
- *	A thread-specific pointer to the data structure, or NULL
- *	if the memory has not been assigned to this key for this thread.
+ *	A thread-specific pointer to the data structure, or NULL if the memory
+ *	has not been assigned to this key for this thread.
  *
  * Side effects:
  *	None.
@@ -129,61 +118,27 @@ Tcl_GetThreadData(keyPtr, size)
  *----------------------------------------------------------------------
  */
 
-VOID *
-TclThreadDataKeyGet(keyPtr)
-    Tcl_ThreadDataKey *keyPtr;	/* Identifier for the data chunk,
-				 * really (pthread_key_t **) */
-{
-#ifdef TCL_THREADS
-    return (VOID *)TclpThreadDataKeyGet(keyPtr);
-#else
-    char *result = *(char **)keyPtr;
-    return (VOID *)result;
-#endif /* TCL_THREADS */
-}
-
-
-/*
- *----------------------------------------------------------------------
- *
- * TclThreadDataKeySet --
- *
- *	This procedure sets a thread local storage pointer.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	The assigned value will be returned by TclpThreadDataKeyGet.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclThreadDataKeySet(keyPtr, data)
-    Tcl_ThreadDataKey *keyPtr;	/* Identifier for the data chunk,
-				 * really (pthread_key_t **) */
-    VOID *data;			/* Thread local storage */
+void *
+TclThreadDataKeyGet(
+    Tcl_ThreadDataKey *keyPtr)	/* Identifier for the data chunk, really
+				 * (pthread_key_t **) */
 {
 #ifdef TCL_THREADS
-    if (*keyPtr == NULL) {
-	TclpThreadDataKeyInit(keyPtr);
-    }
-    TclpThreadDataKeySet(keyPtr, data);
-#else
-    *keyPtr = (Tcl_ThreadDataKey)data;
+    return TclpThreadDataKeyGet(keyPtr);
+#else /* TCL_THREADS */
+    char *result = *(char **) keyPtr;
+    return result;
 #endif /* TCL_THREADS */
 }
 
-
 
 /*
  *----------------------------------------------------------------------
  *
  * RememberSyncObject
  *
- *      Keep a list of (mutexes/condition variable/data key)
- *	used during finalization.
+ *	Keep a list of (mutexes/condition variable/data key) used during
+ *	finalization.
  *
  *	Assume master lock is held.
  *
@@ -197,22 +152,23 @@ TclThreadDataKeySet(keyPtr, data)
  */
 
 static void
-RememberSyncObject(objPtr, recPtr)
-    char *objPtr;		/* Pointer to sync object */
-    SyncObjRecord *recPtr;	/* Record of sync objects */
+RememberSyncObject(
+    char *objPtr,		/* Pointer to sync object */
+    SyncObjRecord *recPtr)	/* Record of sync objects */
 {
     char **newList;
     int i, j;
 
+
     /*
-     * Reuse any free slot in the list. 
+     * Reuse any free slot in the list.
      */
 
     for (i=0 ; i < recPtr->num ; ++i) {
 	if (recPtr->list[i] == NULL) {
 	    recPtr->list[i] = objPtr;
 	    return;
-	} 
+	}
     }
 
     /*
@@ -222,14 +178,14 @@ RememberSyncObject(objPtr, recPtr)
 
     if (recPtr->num >= recPtr->max) {
 	recPtr->max += 8;
-	newList = (char **)ckalloc(recPtr->max * sizeof(char *));
-	for (i=0, j=0 ; i < recPtr->num ; i++) {
-            if (recPtr->list[i] != NULL) {
+	newList = (char **) ckalloc(recPtr->max * sizeof(char *));
+	for (i=0,j=0 ; i<recPtr->num ; i++) {
+	    if (recPtr->list[i] != NULL) {
 		newList[j++] = recPtr->list[i];
-            }
+	    }
 	}
 	if (recPtr->list != NULL) {
-	    ckfree((char *)recPtr->list);
+	    ckfree((char *) recPtr->list);
 	}
 	recPtr->list = newList;
 	recPtr->num = j;
@@ -244,7 +200,7 @@ RememberSyncObject(objPtr, recPtr)
  *
  * ForgetSyncObject
  *
- *      Remove a single object from the list.
+ *	Remove a single object from the list.
  *	Assume master lock is held.
  *
  * Results:
@@ -257,9 +213,9 @@ RememberSyncObject(objPtr, recPtr)
  */
 
 static void
-ForgetSyncObject(objPtr, recPtr)
-    char *objPtr;		/* Pointer to sync object */
-    SyncObjRecord *recPtr;	/* Record of sync objects */
+ForgetSyncObject(
+    char *objPtr,		/* Pointer to sync object */
+    SyncObjRecord *recPtr)	/* Record of sync objects */
 {
     int i;
 
@@ -276,7 +232,7 @@ ForgetSyncObject(objPtr, recPtr)
  *
  * TclRememberMutex
  *
- *      Keep a list of mutexes used during finalization.
+ *	Keep a list of mutexes used during finalization.
  *	Assume master lock is held.
  *
  * Results:
@@ -289,8 +245,8 @@ ForgetSyncObject(objPtr, recPtr)
  */
 
 void
-TclRememberMutex(mutexPtr)
-    Tcl_Mutex *mutexPtr;
+TclRememberMutex(
+    Tcl_Mutex *mutexPtr)
 {
     RememberSyncObject((char *)mutexPtr, &mutexRecord);
 }
@@ -298,10 +254,10 @@ TclRememberMutex(mutexPtr)
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_MutexFinalize
+ * Tcl_MutexFinalize --
  *
- *      Finalize a single mutex and remove it from the
- *	list of remembered objects.
+ *	Finalize a single mutex and remove it from the list of remembered
+ *	objects.
  *
  * Results:
  *	None.
@@ -313,47 +269,23 @@ TclRememberMutex(mutexPtr)
  */
 
 void
-Tcl_MutexFinalize(mutexPtr)
-    Tcl_Mutex *mutexPtr;
+Tcl_MutexFinalize(
+    Tcl_Mutex *mutexPtr)
 {
 #ifdef TCL_THREADS
     TclpFinalizeMutex(mutexPtr);
 #endif
     TclpMasterLock();
-    ForgetSyncObject((char *)mutexPtr, &mutexRecord);
+    ForgetSyncObject((char *) mutexPtr, &mutexRecord);
     TclpMasterUnlock();
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclRememberDataKey
- *
- *      Keep a list of thread data keys used during finalization.
- *	Assume master lock is held.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Add to the key list.
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclRememberDataKey(keyPtr)
-    Tcl_ThreadDataKey *keyPtr;
-{
-    RememberSyncObject((char *)keyPtr, &keyRecord);
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * TclRememberCondition
  *
- *      Keep a list of condition variables used during finalization.
+ *	Keep a list of condition variables used during finalization.
  *	Assume master lock is held.
  *
  * Results:
@@ -366,19 +298,19 @@ TclRememberDataKey(keyPtr)
  */
 
 void
-TclRememberCondition(condPtr)
-    Tcl_Condition *condPtr;
+TclRememberCondition(
+    Tcl_Condition *condPtr)
 {
-    RememberSyncObject((char *)condPtr, &condRecord);
+    RememberSyncObject((char *) condPtr, &condRecord);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * Tcl_ConditionFinalize
+ * Tcl_ConditionFinalize --
  *
- *      Finalize a single condition variable and remove it from the
- *	list of remembered objects.
+ *	Finalize a single condition variable and remove it from the list of
+ *	remembered objects.
  *
  * Results:
  *	None.
@@ -390,14 +322,14 @@ TclRememberCondition(condPtr)
  */
 
 void
-Tcl_ConditionFinalize(condPtr)
-    Tcl_Condition *condPtr;
+Tcl_ConditionFinalize(
+    Tcl_Condition *condPtr)
 {
 #ifdef TCL_THREADS
     TclpFinalizeCondition(condPtr);
 #endif
     TclpMasterLock();
-    ForgetSyncObject((char *)condPtr, &condRecord);
+    ForgetSyncObject((char *) condPtr, &condRecord);
     TclpMasterUnlock();
 }
 
@@ -406,8 +338,8 @@ Tcl_ConditionFinalize(condPtr)
  *
  * TclFinalizeThreadData --
  *
- *	This procedure cleans up the thread-local storage.  This is
- *	called once for each thread.
+ *	This function cleans up the thread-local storage. This is called once
+ *	for each thread.
  *
  * Results:
  *	None.
@@ -419,24 +351,9 @@ Tcl_ConditionFinalize(condPtr)
  */
 
 void
-TclFinalizeThreadData()
+TclFinalizeThreadData(void)
 {
-    int i;
-    Tcl_ThreadDataKey *keyPtr;
-
-    TclpMasterLock();
-    for (i=0 ; i<keyRecord.num ; i++) {
-	keyPtr = (Tcl_ThreadDataKey *) keyRecord.list[i];
-#ifdef TCL_THREADS
-	TclpFinalizeThreadData(keyPtr);
-#else
-	if (*keyPtr != NULL) {
-	    ckfree((char *)*keyPtr);
-	    *keyPtr = NULL;
-	}
-#endif
-    }
-    TclpMasterUnlock();
+    TclpFinalizeThreadDataThread();
 }
 
 /*
@@ -444,8 +361,8 @@ TclFinalizeThreadData()
  *
  * TclFinalizeSynchronization --
  *
- *      This procedure cleans up all synchronization objects:
- *      mutexes, condition variables, and thread-local storage.
+ *	This function cleans up all synchronization objects: mutexes,
+ *	condition variables, and thread-local storage.
  *
  * Results:
  *	None.
@@ -457,25 +374,41 @@ TclFinalizeThreadData()
  */
 
 void
-TclFinalizeSynchronization()
+TclFinalizeSynchronization(void)
 {
-#ifdef TCL_THREADS
+    int i;
+    void *blockPtr;
     Tcl_ThreadDataKey *keyPtr;
+#ifdef TCL_THREADS
     Tcl_Mutex *mutexPtr;
     Tcl_Condition *condPtr;
-    int i;
 
     TclpMasterLock();
-    for (i=0 ; i<keyRecord.num ; i++) {
-	keyPtr = (Tcl_ThreadDataKey *)keyRecord.list[i];
-	TclpFinalizeThreadDataKey(keyPtr);
-    }
+#endif
+
+    /*
+     * If we're running unthreaded, the TSD blocks are simply stored inside
+     * their thread data keys. Free them here.
+     */
+
     if (keyRecord.list != NULL) {
-	ckfree((char *)keyRecord.list);
+	for (i=0 ; i<keyRecord.num ; i++) {
+	    keyPtr = (Tcl_ThreadDataKey *) keyRecord.list[i];
+	    blockPtr = (void *) *keyPtr;
+	    ckfree(blockPtr);
+	}
+	ckfree((char *) keyRecord.list);
 	keyRecord.list = NULL;
     }
     keyRecord.max = 0;
     keyRecord.num = 0;
+    
+#ifdef TCL_THREADS
+    /*
+     * Call thread storage master cleanup.
+     */
+
+    TclFinalizeThreadStorage();
 
     for (i=0 ; i<mutexRecord.num ; i++) {
 	mutexPtr = (Tcl_Mutex *)mutexRecord.list[i];
@@ -484,45 +417,37 @@ TclFinalizeSynchronization()
 	}
     }
     if (mutexRecord.list != NULL) {
-	ckfree((char *)mutexRecord.list);
+	ckfree((char *) mutexRecord.list);
 	mutexRecord.list = NULL;
     }
     mutexRecord.max = 0;
     mutexRecord.num = 0;
 
     for (i=0 ; i<condRecord.num ; i++) {
-	condPtr = (Tcl_Condition *)condRecord.list[i];
+	condPtr = (Tcl_Condition *) condRecord.list[i];
 	if (condPtr != NULL) {
 	    TclpFinalizeCondition(condPtr);
 	}
     }
     if (condRecord.list != NULL) {
-	ckfree((char *)condRecord.list);
+	ckfree((char *) condRecord.list);
 	condRecord.list = NULL;
     }
     condRecord.max = 0;
     condRecord.num = 0;
 
     TclpMasterUnlock();
-#else
-    if (keyRecord.list != NULL) {
-	ckfree((char *)keyRecord.list);
-	keyRecord.list = NULL;
-    }
-    keyRecord.max = 0;
-    keyRecord.num = 0;
-#endif
+#endif /* TCL_THREADS */
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_ExitThread --
  *
- *	This procedure is called to terminate the current thread.
- *	This should be used by extensions that create threads with
- *	additional interpreters in them.
+ *	This function is called to terminate the current thread. This should
+ *	be used by extensions that create threads with additional interpreters
+ *	in them.
  *
  * Results:
  *	None.
@@ -534,8 +459,8 @@ TclFinalizeSynchronization()
  */
 
 void
-Tcl_ExitThread(status)
-    int status;
+Tcl_ExitThread(
+    int status)
 {
     Tcl_FinalizeThread();
 #ifdef TCL_THREADS
@@ -550,10 +475,9 @@ Tcl_ExitThread(status)
  *
  * Tcl_ConditionWait, et al. --
  *
- *	These noop procedures are provided so the stub table does
- *	not have to be conditionalized for threads.  The real
- *	implementations of these functions live in the platform
- *	specific files.
+ *	These noop functions are provided so the stub table does not have to
+ *	be conditionalized for threads. The real implementations of these
+ *	functions live in the platform specific files.
  *
  * Results:
  *	None.
@@ -566,31 +490,39 @@ Tcl_ExitThread(status)
 
 #undef Tcl_ConditionWait
 void
-Tcl_ConditionWait(condPtr, mutexPtr, timePtr)
-    Tcl_Condition *condPtr;	/* Really (pthread_cond_t **) */
-    Tcl_Mutex *mutexPtr;	/* Really (pthread_mutex_t **) */
-    Tcl_Time *timePtr;		/* Timeout on waiting period */
+Tcl_ConditionWait(
+    Tcl_Condition *condPtr,	/* Really (pthread_cond_t **) */
+    Tcl_Mutex *mutexPtr,	/* Really (pthread_mutex_t **) */
+    Tcl_Time *timePtr)		/* Timeout on waiting period */
 {
 }
 
 #undef Tcl_ConditionNotify
 void
-Tcl_ConditionNotify(condPtr)
-    Tcl_Condition *condPtr;
+Tcl_ConditionNotify(
+    Tcl_Condition *condPtr)
 {
 }
 
 #undef Tcl_MutexLock
 void
-Tcl_MutexLock(mutexPtr)
-    Tcl_Mutex *mutexPtr;
+Tcl_MutexLock(
+    Tcl_Mutex *mutexPtr)
 {
 }
 
 #undef Tcl_MutexUnlock
 void
-Tcl_MutexUnlock(mutexPtr)
-    Tcl_Mutex *mutexPtr;
+Tcl_MutexUnlock(
+    Tcl_Mutex *mutexPtr)
 {
 }
-#endif
+#endif /* !TCL_THREADS */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclThreadAlloc.c b/generic/tclThreadAlloc.c
index ad9f0a0..2e74fa7 100755..100644
--- a/generic/tclThreadAlloc.c
+++ b/generic/tclThreadAlloc.c
@@ -2,31 +2,22 @@
  * tclThreadAlloc.c --
  *
  *	This is a very fast storage allocator for used with threads (designed
- *	avoid lock contention).  The basic strategy is to allocate memory in
- *  	fixed size blocks from block caches.
- * 
+ *	avoid lock contention). The basic strategy is to allocate memory in
+ *	fixed size blocks from block caches.
+ *
  * The Initial Developer of the Original Code is America Online, Inc.
  * Portions created by AOL are Copyright (C) 1999 America Online, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-
-#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC) && !defined(TCL_MEM_DEBUG)
-
-#ifdef WIN32
-#include "tclWinInt.h"
-#else
-extern Tcl_Mutex *TclpNewAllocMutex(void);
-extern void *TclpGetAllocCache(void);
-extern void TclpSetAllocCache(void *);
-#endif
+#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
 
 /*
- * If range checking is enabled, an additional byte will be allocated
- * to store the magic number at the end of the requested memory.
+ * If range checking is enabled, an additional byte will be allocated to store
+ * the magic number at the end of the requested memory.
  */
 
 #ifndef RCHECK
@@ -38,33 +29,21 @@ extern void TclpSetAllocCache(void *);
 #endif
 
 /*
- * The following define the number of Tcl_Obj's to allocate/move
- * at a time and the high water mark to prune a per-thread cache.
- * On a 32 bit system, sizeof(Tcl_Obj) = 24 so 800 * 24 = ~16k.
- *
+ * The following define the number of Tcl_Obj's to allocate/move at a time and
+ * the high water mark to prune a per-thread cache. On a 32 bit system,
+ * sizeof(Tcl_Obj) = 24 so 800 * 24 = ~16k.
  */
- 
-#define NOBJALLOC	 800
+
+#define NOBJALLOC	800
 #define NOBJHIGH	1200
 
 /*
- * Alignment for allocated memory.
+ * The following union stores accounting information for each block including
+ * two small magic numbers and a bucket number when in use or a next pointer
+ * when free. The original requested size (not including the Block overhead)
+ * is also maintained.
  */
 
-#if defined(__APPLE__)
-#define ALLOCALIGN	16
-#else
-#define ALLOCALIGN	8
-#endif
-
-/*
- * The following union stores accounting information for
- * each block including two small magic numbers and
- * a bucket number when in use or a next pointer when
- * free.  The original requested size (not including
- * the Block overhead) is also maintained.
- */
- 
 typedef union Block {
     struct {
 	union {
@@ -78,93 +57,95 @@ typedef union Block {
 	} u;
 	size_t reqSize;			/* Requested allocation size. */
     } b;
-    unsigned char padding[ALLOCALIGN];
+    unsigned char padding[TCL_ALLOCALIGN];
 } Block;
-#define b_next		b.u.next
-#define b_bucket	b.u.s.bucket
-#define b_magic1	b.u.s.magic1
-#define b_magic2	b.u.s.magic2
-#define MAGIC		0xef
-#define b_reqsize	b.reqSize
+#define nextBlock	b.u.next
+#define sourceBucket	b.u.s.bucket
+#define magicNum1	b.u.s.magic1
+#define magicNum2	b.u.s.magic2
+#define MAGIC		0xEF
+#define blockReqSize	b.reqSize
 
 /*
  * The following defines the minimum and and maximum block sizes and the number
  * of buckets in the bucket cache.
  */
 
-#define MINALLOC	((sizeof(Block) + 8 + (ALLOCALIGN-1)) & ~(ALLOCALIGN-1))
+#define MINALLOC	((sizeof(Block) + 8 + (TCL_ALLOCALIGN-1)) & ~(TCL_ALLOCALIGN-1))
 #define NBUCKETS	(11 - (MINALLOC >> 5))
 #define MAXALLOC	(MINALLOC << (NBUCKETS - 1))
 
 /*
- * The following structure defines a bucket of blocks with
- * various accounting and statistics information.
+ * The following structure defines a bucket of blocks with various accounting
+ * and statistics information.
  */
 
 typedef struct Bucket {
-    Block *firstPtr;
-    long nfree;
-    long nget;
-    long nput;
-    long nwait;
-    long nlock;
-    long nrequest;
+    Block *firstPtr;		/* First block available */
+    long numFree;		/* Number of blocks available */
+
+    /* All fields below for accounting only */
+
+    long numRemoves;		/* Number of removes from bucket */
+    long numInserts;		/* Number of inserts into bucket */
+    long numWaits;		/* Number of waits to acquire a lock */
+    long numLocks;		/* Number of locks acquired */
+    long totalAssigned;		/* Total space assigned to bucket */
 } Bucket;
 
 /*
- * The following structure defines a cache of buckets and objs.
+ * The following structure defines a cache of buckets and objs, of which there
+ * will be (at most) one per thread.
  */
 
 typedef struct Cache {
-    struct Cache  *nextPtr;
-    Tcl_ThreadId   owner;
-    Tcl_Obj       *firstObjPtr;
-    int            nobjs;
-    int	           nsysalloc;
-    Bucket         buckets[NBUCKETS];
+    struct Cache *nextPtr;	/* Linked list of cache entries */
+    Tcl_ThreadId owner;		/* Which thread's cache is this? */
+    Tcl_Obj *firstObjPtr;	/* List of free objects for thread */
+    int numObjects;		/* Number of objects for thread */
+    int totalAssigned;		/* Total space assigned to thread */
+    Bucket buckets[NBUCKETS];	/* The buckets for this thread */
 } Cache;
 
 /*
- * The following array specifies various per-bucket 
- * limits and locks.  The values are statically initialized
- * to avoid calculating them repeatedly.
+ * The following array specifies various per-bucket limits and locks. The
+ * values are statically initialized to avoid calculating them repeatedly.
  */
 
-struct binfo {
-    size_t blocksize;	/* Bucket blocksize. */
-    int maxblocks;	/* Max blocks before move to share. */
-    int nmove;		/* Num blocks to move to share. */
-    Tcl_Mutex *lockPtr; /* Share bucket lock. */
-} binfo[NBUCKETS];
+static struct {
+    size_t blockSize;		/* Bucket blocksize. */
+    int maxBlocks;		/* Max blocks before move to share. */
+    int numMove;		/* Num blocks to move to share. */
+    Tcl_Mutex *lockPtr;		/* Share bucket lock. */
+} bucketInfo[NBUCKETS];
 
 /*
  * Static functions defined in this file.
  */
 
-static void LockBucket(Cache *cachePtr, int bucket);
-static void UnlockBucket(Cache *cachePtr, int bucket);
-static void PutBlocks(Cache *cachePtr, int bucket, int nmove);
-static int  GetBlocks(Cache *cachePtr, int bucket);
-static Block *Ptr2Block(char *ptr);
-static char *Block2Ptr(Block *blockPtr, int bucket, unsigned int reqsize);
-static void MoveObjs(Cache *fromPtr, Cache *toPtr, int nmove);
+static Cache *	GetCache(void);
+static void	LockBucket(Cache *cachePtr, int bucket);
+static void	UnlockBucket(Cache *cachePtr, int bucket);
+static void	PutBlocks(Cache *cachePtr, int bucket, int numMove);
+static int	GetBlocks(Cache *cachePtr, int bucket);
+static Block *	Ptr2Block(char *ptr);
+static char *	Block2Ptr(Block *blockPtr, int bucket, unsigned int reqSize);
+static void	MoveObjs(Cache *fromPtr, Cache *toPtr, int numMove);
 
 /*
- * Local variables defined in this file and initialized at
- * startup.
+ * Local variables defined in this file and initialized at startup.
  */
 
 static Tcl_Mutex *listLockPtr;
 static Tcl_Mutex *objLockPtr;
-static Cache     sharedCache;
-static Cache    *sharedPtr = &sharedCache;
-static Cache    *firstCachePtr = &sharedCache;
-
+static Cache sharedCache;
+static Cache *sharedPtr = &sharedCache;
+static Cache *firstCachePtr = &sharedCache;
 
 /*
  *----------------------------------------------------------------------
  *
- *  GetCache ---
+ * GetCache ---
  *
  *	Gets per-thread memory cache, allocating it if necessary.
  *
@@ -172,7 +153,7 @@ static Cache    *firstCachePtr = &sharedCache;
  *	Pointer to cache.
  *
  * Side effects:
- *  	None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
@@ -196,10 +177,11 @@ GetCache(void)
 	    listLockPtr = TclpNewAllocMutex();
 	    objLockPtr = TclpNewAllocMutex();
 	    for (i = 0; i < NBUCKETS; ++i) {
-		binfo[i].blocksize = MINALLOC << i;
-		binfo[i].maxblocks = 1 << (NBUCKETS - 1 - i);
-		binfo[i].nmove = i < NBUCKETS-1 ? 1 << (NBUCKETS - 2 - i) : 1;
-	        binfo[i].lockPtr = TclpNewAllocMutex();
+		bucketInfo[i].blockSize = MINALLOC << i;
+		bucketInfo[i].maxBlocks = 1 << (NBUCKETS - 1 - i);
+		bucketInfo[i].numMove = i < NBUCKETS - 1 ?
+			1 << (NBUCKETS - 2 - i) : 1;
+		bucketInfo[i].lockPtr = TclpNewAllocMutex();
 	    }
 	}
 	Tcl_MutexUnlock(initLockPtr);
@@ -211,25 +193,24 @@ GetCache(void)
 
     cachePtr = TclpGetAllocCache();
     if (cachePtr == NULL) {
-    	cachePtr = calloc(1, sizeof(Cache));
-    	if (cachePtr == NULL) {
-	    panic("alloc: could not allocate new cache");
-    	}
-    	Tcl_MutexLock(listLockPtr);
-    	cachePtr->nextPtr = firstCachePtr;
-    	firstCachePtr = cachePtr;
-    	Tcl_MutexUnlock(listLockPtr);
-    	cachePtr->owner = Tcl_GetCurrentThread();
+	cachePtr = calloc(1, sizeof(Cache));
+	if (cachePtr == NULL) {
+	    Tcl_Panic("alloc: could not allocate new cache");
+	}
+	Tcl_MutexLock(listLockPtr);
+	cachePtr->nextPtr = firstCachePtr;
+	firstCachePtr = cachePtr;
+	Tcl_MutexUnlock(listLockPtr);
+	cachePtr->owner = Tcl_GetCurrentThread();
 	TclpSetAllocCache(cachePtr);
     }
     return cachePtr;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  TclFreeAllocCache --
+ * TclFreeAllocCache --
  *
  *	Flush and delete a cache, removing from list of caches.
  *
@@ -243,7 +224,8 @@ GetCache(void)
  */
 
 void
-TclFreeAllocCache(void *arg)
+TclFreeAllocCache(
+    void *arg)
 {
     Cache *cachePtr = arg;
     Cache **nextPtrPtr;
@@ -254,8 +236,8 @@ TclFreeAllocCache(void *arg)
      */
 
     for (bucket = 0; bucket < NBUCKETS; ++bucket) {
-	if (cachePtr->buckets[bucket].nfree > 0) {
-	    PutBlocks(cachePtr, bucket, cachePtr->buckets[bucket].nfree);
+	if (cachePtr->buckets[bucket].numFree > 0) {
+	    PutBlocks(cachePtr, bucket, cachePtr->buckets[bucket].numFree);
 	}
     }
 
@@ -263,10 +245,10 @@ TclFreeAllocCache(void *arg)
      * Flush objs.
      */
 
-    if (cachePtr->nobjs > 0) {
-    	Tcl_MutexLock(objLockPtr);
-    	MoveObjs(cachePtr, sharedPtr, cachePtr->nobjs);
-    	Tcl_MutexUnlock(objLockPtr);
+    if (cachePtr->numObjects > 0) {
+	Tcl_MutexLock(objLockPtr);
+	MoveObjs(cachePtr, sharedPtr, cachePtr->numObjects);
+	Tcl_MutexUnlock(objLockPtr);
     }
 
     /*
@@ -283,12 +265,11 @@ TclFreeAllocCache(void *arg)
     Tcl_MutexUnlock(listLockPtr);
     free(cachePtr);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  TclpAlloc --
+ * TclpAlloc --
  *
  *	Allocate memory.
  *
@@ -302,72 +283,73 @@ TclFreeAllocCache(void *arg)
  */
 
 char *
-TclpAlloc(unsigned int reqsize)
+TclpAlloc(
+    unsigned int reqSize)
 {
-    Cache         *cachePtr;
-    Block         *blockPtr;
-    register int   bucket;
-    size_t  	   size;
+    Cache *cachePtr;
+    Block *blockPtr;
+    register int bucket;
+    size_t size;
 
+#ifndef __LP64__
     if (sizeof(int) >= sizeof(size_t)) {
 	/* An unsigned int overflow can also be a size_t overflow */
 	const size_t zero = 0;
 	const size_t max = ~zero;
 
-	if (((size_t) reqsize) > max - sizeof(Block) - RCHECK) {
+	if (((size_t) reqSize) > max - sizeof(Block) - RCHECK) {
 	    /* Requested allocation exceeds memory */
 	    return NULL;
 	}
     }
+#endif
 
     cachePtr = TclpGetAllocCache();
     if (cachePtr == NULL) {
 	cachePtr = GetCache();
     }
-    
+
     /*
-     * Increment the requested size to include room for 
-     * the Block structure.  Call malloc() directly if the
-     * required amount is greater than the largest block,
-     * otherwise pop the smallest block large enough,
+     * Increment the requested size to include room for the Block structure.
+     * Call malloc() directly if the required amount is greater than the
+     * largest block, otherwise pop the smallest block large enough,
      * allocating more blocks if necessary.
      */
 
-    blockPtr = NULL;     
-    size = reqsize + sizeof(Block);
+    blockPtr = NULL;
+    size = reqSize + sizeof(Block);
 #if RCHECK
     ++size;
 #endif
     if (size > MAXALLOC) {
 	bucket = NBUCKETS;
-    	blockPtr = malloc(size);
+	blockPtr = malloc(size);
 	if (blockPtr != NULL) {
-	    cachePtr->nsysalloc += reqsize;
+	    cachePtr->totalAssigned += reqSize;
 	}
     } else {
-    	bucket = 0;
-    	while (binfo[bucket].blocksize < size) {
-    	    ++bucket;
-    	}
-    	if (cachePtr->buckets[bucket].nfree || GetBlocks(cachePtr, bucket)) {
+	bucket = 0;
+	while (bucketInfo[bucket].blockSize < size) {
+	    ++bucket;
+	}
+	if (cachePtr->buckets[bucket].numFree || GetBlocks(cachePtr, bucket)) {
 	    blockPtr = cachePtr->buckets[bucket].firstPtr;
-	    cachePtr->buckets[bucket].firstPtr = blockPtr->b_next;
-	    --cachePtr->buckets[bucket].nfree;
-    	    ++cachePtr->buckets[bucket].nget;
-	    cachePtr->buckets[bucket].nrequest += reqsize;
+	    cachePtr->buckets[bucket].firstPtr = blockPtr->nextBlock;
+	    --cachePtr->buckets[bucket].numFree;
+	    ++cachePtr->buckets[bucket].numRemoves;
+	    cachePtr->buckets[bucket].totalAssigned += reqSize;
 	}
     }
     if (blockPtr == NULL) {
-    	return NULL;
+	return NULL;
     }
-    return Block2Ptr(blockPtr, bucket, reqsize);
+    return Block2Ptr(blockPtr, bucket, reqSize);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  TclpFree --
+ * TclpFree --
  *
  *	Return blocks to the thread block cache.
  *
@@ -381,49 +363,52 @@ TclpAlloc(unsigned int reqsize)
  */
 
 void
-TclpFree(char *ptr)
+TclpFree(
+    char *ptr)
 {
-    if (ptr != NULL) {
-	Cache  *cachePtr = TclpGetAllocCache();
-	Block *blockPtr;
-	int bucket;
+    Cache *cachePtr;
+    Block *blockPtr;
+    int bucket;
 
-	if (cachePtr == NULL) {
-	    cachePtr = GetCache();
-	}
- 
-	/*
-	 * Get the block back from the user pointer and
-	 * call system free directly for large blocks.
-	 * Otherwise, push the block back on the bucket and
-	 * move blocks to the shared cache if there are now
-	 * too many free.
-	 */
+    if (ptr == NULL) {
+	return;
+    }
 
-	blockPtr = Ptr2Block(ptr);
-	bucket = blockPtr->b_bucket;
-	if (bucket == NBUCKETS) {
-	    cachePtr->nsysalloc -= blockPtr->b_reqsize;
-	    free(blockPtr);
-	} else {
-	    cachePtr->buckets[bucket].nrequest -= blockPtr->b_reqsize;
-	    blockPtr->b_next = cachePtr->buckets[bucket].firstPtr;
-	    cachePtr->buckets[bucket].firstPtr = blockPtr;
-	    ++cachePtr->buckets[bucket].nfree;
-	    ++cachePtr->buckets[bucket].nput;
-	    if (cachePtr != sharedPtr &&
-		    cachePtr->buckets[bucket].nfree > binfo[bucket].maxblocks) {
-		PutBlocks(cachePtr, bucket, binfo[bucket].nmove);
-	    }
-	}
+    cachePtr = TclpGetAllocCache();
+    if (cachePtr == NULL) {
+	cachePtr = GetCache();
     }
-}
 
+    /*
+     * Get the block back from the user pointer and call system free directly
+     * for large blocks. Otherwise, push the block back on the bucket and move
+     * blocks to the shared cache if there are now too many free.
+     */
+
+    blockPtr = Ptr2Block(ptr);
+    bucket = blockPtr->sourceBucket;
+    if (bucket == NBUCKETS) {
+	cachePtr->totalAssigned -= blockPtr->blockReqSize;
+	free(blockPtr);
+	return;
+    }
+
+    cachePtr->buckets[bucket].totalAssigned -= blockPtr->blockReqSize;
+    blockPtr->nextBlock = cachePtr->buckets[bucket].firstPtr;
+    cachePtr->buckets[bucket].firstPtr = blockPtr;
+    ++cachePtr->buckets[bucket].numFree;
+    ++cachePtr->buckets[bucket].numInserts;
+
+    if (cachePtr != sharedPtr &&
+	    cachePtr->buckets[bucket].numFree > bucketInfo[bucket].maxBlocks) {
+	PutBlocks(cachePtr, bucket, bucketInfo[bucket].numMove);
+    }
+}
 
 /*
  *----------------------------------------------------------------------
  *
- *  TclpRealloc --
+ * TclpRealloc --
  *
  *	Re-allocate memory to a larger or smaller size.
  *
@@ -437,28 +422,32 @@ TclpFree(char *ptr)
  */
 
 char *
-TclpRealloc(char *ptr, unsigned int reqsize)
+TclpRealloc(
+    char *ptr,
+    unsigned int reqSize)
 {
     Cache *cachePtr;
     Block *blockPtr;
-    void *new;
+    void *newPtr;
     size_t size, min;
     int bucket;
 
     if (ptr == NULL) {
-	return TclpAlloc(reqsize);
+	return TclpAlloc(reqSize);
     }
 
+#ifndef __LP64__
     if (sizeof(int) >= sizeof(size_t)) {
 	/* An unsigned int overflow can also be a size_t overflow */
 	const size_t zero = 0;
 	const size_t max = ~zero;
 
-	if (((size_t) reqsize) > max - sizeof(Block) - RCHECK) {
+	if (((size_t) reqSize) > max - sizeof(Block) - RCHECK) {
 	    /* Requested allocation exceeds memory */
 	    return NULL;
 	}
     }
+#endif
 
     cachePtr = TclpGetAllocCache();
     if (cachePtr == NULL) {
@@ -466,54 +455,52 @@ TclpRealloc(char *ptr, unsigned int reqsize)
     }
 
     /*
-     * If the block is not a system block and fits in place,
-     * simply return the existing pointer.  Otherwise, if the block
-     * is a system block and the new size would also require a system
-     * block, call realloc() directly.
+     * If the block is not a system block and fits in place, simply return the
+     * existing pointer. Otherwise, if the block is a system block and the new
+     * size would also require a system block, call realloc() directly.
      */
 
     blockPtr = Ptr2Block(ptr);
-    size = reqsize + sizeof(Block);
+    size = reqSize + sizeof(Block);
 #if RCHECK
     ++size;
 #endif
-    bucket = blockPtr->b_bucket;
+    bucket = blockPtr->sourceBucket;
     if (bucket != NBUCKETS) {
 	if (bucket > 0) {
-	    min = binfo[bucket-1].blocksize;
+	    min = bucketInfo[bucket-1].blockSize;
 	} else {
 	    min = 0;
 	}
-	if (size > min && size <= binfo[bucket].blocksize) {
-	    cachePtr->buckets[bucket].nrequest -= blockPtr->b_reqsize;
-	    cachePtr->buckets[bucket].nrequest += reqsize;
-	    return Block2Ptr(blockPtr, bucket, reqsize);
+	if (size > min && size <= bucketInfo[bucket].blockSize) {
+	    cachePtr->buckets[bucket].totalAssigned -= blockPtr->blockReqSize;
+	    cachePtr->buckets[bucket].totalAssigned += reqSize;
+	    return Block2Ptr(blockPtr, bucket, reqSize);
 	}
     } else if (size > MAXALLOC) {
-	cachePtr->nsysalloc -= blockPtr->b_reqsize;
-	cachePtr->nsysalloc += reqsize;
+	cachePtr->totalAssigned -= blockPtr->blockReqSize;
+	cachePtr->totalAssigned += reqSize;
 	blockPtr = realloc(blockPtr, size);
 	if (blockPtr == NULL) {
 	    return NULL;
 	}
-	return Block2Ptr(blockPtr, NBUCKETS, reqsize);
+	return Block2Ptr(blockPtr, NBUCKETS, reqSize);
     }
 
     /*
      * Finally, perform an expensive malloc/copy/free.
      */
 
-    new = TclpAlloc(reqsize);
-    if (new != NULL) {
-	if (reqsize > blockPtr->b_reqsize) {
-	    reqsize = blockPtr->b_reqsize;
+    newPtr = TclpAlloc(reqSize);
+    if (newPtr != NULL) {
+	if (reqSize > blockPtr->blockReqSize) {
+	    reqSize = blockPtr->blockReqSize;
 	}
-    	memcpy(new, ptr, reqsize);
-    	TclpFree(ptr);
+	memcpy(newPtr, ptr, reqSize);
+	TclpFree(ptr);
     }
-    return new;
+    return newPtr;
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -526,8 +513,8 @@ TclpRealloc(char *ptr, unsigned int reqsize)
  *	Pointer to uninitialized Tcl_Obj.
  *
  * Side effects:
- *	May move Tcl_Obj's from shared cached or allocate new Tcl_Obj's
- *  	if list is empty.
+ *	May move Tcl_Obj's from shared cached or allocate new Tcl_Obj's if
+ *	list is empty.
  *
  *----------------------------------------------------------------------
  */
@@ -536,38 +523,40 @@ Tcl_Obj *
 TclThreadAllocObj(void)
 {
     register Cache *cachePtr = TclpGetAllocCache();
-    register int nmove;
     register Tcl_Obj *objPtr;
-    Tcl_Obj *newObjsPtr;
 
     if (cachePtr == NULL) {
 	cachePtr = GetCache();
     }
 
     /*
-     * Get this thread's obj list structure and move
-     * or allocate new objs if necessary.
+     * Get this thread's obj list structure and move or allocate new objs if
+     * necessary.
      */
-     
-    if (cachePtr->nobjs == 0) {
-    	Tcl_MutexLock(objLockPtr);
-	nmove = sharedPtr->nobjs;
-	if (nmove > 0) {
-	    if (nmove > NOBJALLOC) {
-		nmove = NOBJALLOC;
+
+    if (cachePtr->numObjects == 0) {
+	register int numMove;
+
+	Tcl_MutexLock(objLockPtr);
+	numMove = sharedPtr->numObjects;
+	if (numMove > 0) {
+	    if (numMove > NOBJALLOC) {
+		numMove = NOBJALLOC;
 	    }
-	    MoveObjs(sharedPtr, cachePtr, nmove);
+	    MoveObjs(sharedPtr, cachePtr, numMove);
 	}
-    	Tcl_MutexUnlock(objLockPtr);
-	if (cachePtr->nobjs == 0) {
-	    cachePtr->nobjs = nmove = NOBJALLOC;
-	    newObjsPtr = malloc(sizeof(Tcl_Obj) * nmove);
+	Tcl_MutexUnlock(objLockPtr);
+	if (cachePtr->numObjects == 0) {
+	    Tcl_Obj *newObjsPtr;
+
+	    cachePtr->numObjects = numMove = NOBJALLOC;
+	    newObjsPtr = malloc(sizeof(Tcl_Obj) * numMove);
 	    if (newObjsPtr == NULL) {
-		panic("alloc: could not allocate %d new objects", nmove);
+		Tcl_Panic("alloc: could not allocate %d new objects", numMove);
 	    }
-	    while (--nmove >= 0) {
-		objPtr = &newObjsPtr[nmove];
-		objPtr->internalRep.otherValuePtr = cachePtr->firstObjPtr;
+	    while (--numMove >= 0) {
+		objPtr = &newObjsPtr[numMove];
+		objPtr->internalRep.twoPtrValue.ptr1 = cachePtr->firstObjPtr;
 		cachePtr->firstObjPtr = objPtr;
 	    }
 	}
@@ -578,11 +567,10 @@ TclThreadAllocObj(void)
      */
 
     objPtr = cachePtr->firstObjPtr;
-    cachePtr->firstObjPtr = objPtr->internalRep.otherValuePtr;
-    --cachePtr->nobjs;
+    cachePtr->firstObjPtr = objPtr->internalRep.twoPtrValue.ptr1;
+    --cachePtr->numObjects;
     return objPtr;
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -595,14 +583,14 @@ TclThreadAllocObj(void)
  *	None.
  *
  * Side effects:
- *	May move free Tcl_Obj's to shared list upon hitting high
- *  	water mark.
+ *	May move free Tcl_Obj's to shared list upon hitting high water mark.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclThreadFreeObj(Tcl_Obj *objPtr)
+TclThreadFreeObj(
+    Tcl_Obj *objPtr)
 {
     Cache *cachePtr = TclpGetAllocCache();
 
@@ -613,23 +601,22 @@ TclThreadFreeObj(Tcl_Obj *objPtr)
     /*
      * Get this thread's list and push on the free Tcl_Obj.
      */
-     
-    objPtr->internalRep.otherValuePtr = cachePtr->firstObjPtr;
+
+    objPtr->internalRep.twoPtrValue.ptr1 = cachePtr->firstObjPtr;
     cachePtr->firstObjPtr = objPtr;
-    ++cachePtr->nobjs;
-    
+    ++cachePtr->numObjects;
+
     /*
-     * If the number of free objects has exceeded the high
-     * water mark, move some blocks to the shared list.
+     * If the number of free objects has exceeded the high water mark, move
+     * some blocks to the shared list.
      */
-     
-    if (cachePtr->nobjs > NOBJHIGH) {
+
+    if (cachePtr->numObjects > NOBJHIGH) {
 	Tcl_MutexLock(objLockPtr);
 	MoveObjs(cachePtr, sharedPtr, NOBJALLOC);
 	Tcl_MutexUnlock(objLockPtr);
     }
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -642,13 +629,14 @@ TclThreadFreeObj(Tcl_Obj *objPtr)
  *	None.
  *
  * Side effects:
- *  	List appended to given dstring.
+ *	List appended to given dstring.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_GetMemoryInfo(Tcl_DString *dsPtr)
+Tcl_GetMemoryInfo(
+    Tcl_DString *dsPtr)
 {
     Cache *cachePtr;
     char buf[200];
@@ -659,28 +647,27 @@ Tcl_GetMemoryInfo(Tcl_DString *dsPtr)
     while (cachePtr != NULL) {
 	Tcl_DStringStartSublist(dsPtr);
 	if (cachePtr == sharedPtr) {
-    	    Tcl_DStringAppendElement(dsPtr, "shared");
+	    Tcl_DStringAppendElement(dsPtr, "shared");
 	} else {
-	    sprintf(buf, "thread%d", (int) cachePtr->owner);
-    	    Tcl_DStringAppendElement(dsPtr, buf);
+	    sprintf(buf, "thread%p", cachePtr->owner);
+	    Tcl_DStringAppendElement(dsPtr, buf);
 	}
 	for (n = 0; n < NBUCKETS; ++n) {
-    	    sprintf(buf, "%lu %ld %ld %ld %ld %ld %ld",
-		(unsigned long) binfo[n].blocksize,
-		cachePtr->buckets[n].nfree,
-		cachePtr->buckets[n].nget,
-		cachePtr->buckets[n].nput,
-		cachePtr->buckets[n].nrequest,
-		cachePtr->buckets[n].nlock,
-		cachePtr->buckets[n].nwait);
+	    sprintf(buf, "%lu %ld %ld %ld %ld %ld %ld",
+		    (unsigned long) bucketInfo[n].blockSize,
+		    cachePtr->buckets[n].numFree,
+		    cachePtr->buckets[n].numRemoves,
+		    cachePtr->buckets[n].numInserts,
+		    cachePtr->buckets[n].totalAssigned,
+		    cachePtr->buckets[n].numLocks,
+		    cachePtr->buckets[n].numWaits);
 	    Tcl_DStringAppendElement(dsPtr, buf);
 	}
 	Tcl_DStringEndSublist(dsPtr);
-	    cachePtr = cachePtr->nextPtr;
+	cachePtr = cachePtr->nextPtr;
     }
     Tcl_MutexUnlock(listLockPtr);
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -693,45 +680,46 @@ Tcl_GetMemoryInfo(Tcl_DString *dsPtr)
  *	None.
  *
  * Side effects:
- *  	None.
+ *	None.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-MoveObjs(Cache *fromPtr, Cache *toPtr, int nmove)
+MoveObjs(
+    Cache *fromPtr,
+    Cache *toPtr,
+    int numMove)
 {
     register Tcl_Obj *objPtr = fromPtr->firstObjPtr;
     Tcl_Obj *fromFirstObjPtr = objPtr;
 
-    toPtr->nobjs += nmove;
-    fromPtr->nobjs -= nmove;
+    toPtr->numObjects += numMove;
+    fromPtr->numObjects -= numMove;
 
     /*
-     * Find the last object to be moved; set the next one
-     * (the first one not to be moved) as the first object
-     * in the 'from' cache.
+     * Find the last object to be moved; set the next one (the first one not
+     * to be moved) as the first object in the 'from' cache.
      */
 
-    while (--nmove) {
-	objPtr = objPtr->internalRep.otherValuePtr;
+    while (--numMove) {
+	objPtr = objPtr->internalRep.twoPtrValue.ptr1;
     }
-    fromPtr->firstObjPtr = objPtr->internalRep.otherValuePtr;    
+    fromPtr->firstObjPtr = objPtr->internalRep.twoPtrValue.ptr1;
 
     /*
-     * Move all objects as a block - they are already linked to
-     * each other, we just have to update the first and last.
+     * Move all objects as a block - they are already linked to each other, we
+     * just have to update the first and last.
      */
 
-    objPtr->internalRep.otherValuePtr = toPtr->firstObjPtr;
+    objPtr->internalRep.twoPtrValue.ptr1 = toPtr->firstObjPtr;
     toPtr->firstObjPtr = fromFirstObjPtr;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  Block2Ptr, Ptr2Block --
+ * Block2Ptr, Ptr2Block --
  *
  *	Convert between internal blocks and user pointers.
  *
@@ -745,84 +733,91 @@ MoveObjs(Cache *fromPtr, Cache *toPtr, int nmove)
  */
 
 static char *
-Block2Ptr(Block *blockPtr, int bucket, unsigned int reqsize) 
+Block2Ptr(
+    Block *blockPtr,
+    int bucket,
+    unsigned int reqSize)
 {
     register void *ptr;
 
-    blockPtr->b_magic1 = blockPtr->b_magic2 = MAGIC;
-    blockPtr->b_bucket = bucket;
-    blockPtr->b_reqsize = reqsize;
+    blockPtr->magicNum1 = blockPtr->magicNum2 = MAGIC;
+    blockPtr->sourceBucket = bucket;
+    blockPtr->blockReqSize = reqSize;
     ptr = ((void *) (blockPtr + 1));
 #if RCHECK
-    ((unsigned char *)(ptr))[reqsize] = MAGIC;
+    ((unsigned char *)(ptr))[reqSize] = MAGIC;
 #endif
     return (char *) ptr;
 }
 
 static Block *
-Ptr2Block(char *ptr)
+Ptr2Block(
+    char *ptr)
 {
     register Block *blockPtr;
 
     blockPtr = (((Block *) ptr) - 1);
-    if (blockPtr->b_magic1 != MAGIC
+    if (blockPtr->magicNum1 != MAGIC || blockPtr->magicNum2 != MAGIC) {
+	Tcl_Panic("alloc: invalid block: %p: %x %x",
+		blockPtr, blockPtr->magicNum1, blockPtr->magicNum2);
+    }
 #if RCHECK
-	|| ((unsigned char *) ptr)[blockPtr->b_reqsize] != MAGIC
-#endif
-	|| blockPtr->b_magic2 != MAGIC) {
-	panic("alloc: invalid block: %p: %x %x %x\n",
-	    blockPtr, blockPtr->b_magic1, blockPtr->b_magic2,
-	    ((unsigned char *) ptr)[blockPtr->b_reqsize]);
+    if (((unsigned char *) ptr)[blockPtr->blockReqSize] != MAGIC) {
+	Tcl_Panic("alloc: invalid block: %p: %x %x %x",
+		blockPtr, blockPtr->magicNum1, blockPtr->magicNum2,
+		((unsigned char *) ptr)[blockPtr->blockReqSize]);
     }
+#endif
     return blockPtr;
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  LockBucket, UnlockBucket --
+ * LockBucket, UnlockBucket --
  *
  *	Set/unset the lock to access a bucket in the shared cache.
  *
  * Results:
- *  	None.
+ *	None.
  *
  * Side effects:
- *	Lock activity and contention are monitored globally and on
- *  	a per-cache basis.
+ *	Lock activity and contention are monitored globally and on a per-cache
+ *	basis.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-LockBucket(Cache *cachePtr, int bucket)
+LockBucket(
+    Cache *cachePtr,
+    int bucket)
 {
 #if 0
-    if (Tcl_MutexTryLock(binfo[bucket].lockPtr) != TCL_OK) {
-	Tcl_MutexLock(binfo[bucket].lockPtr);
-    	++cachePtr->buckets[bucket].nwait;
-    	++sharedPtr->buckets[bucket].nwait;
+    if (Tcl_MutexTryLock(bucketInfo[bucket].lockPtr) != TCL_OK) {
+	Tcl_MutexLock(bucketInfo[bucket].lockPtr);
+	++cachePtr->buckets[bucket].numWaits;
+	++sharedPtr->buckets[bucket].numWaits;
     }
 #else
-    Tcl_MutexLock(binfo[bucket].lockPtr);
+    Tcl_MutexLock(bucketInfo[bucket].lockPtr);
 #endif
-    ++cachePtr->buckets[bucket].nlock;
-    ++sharedPtr->buckets[bucket].nlock;
+    ++cachePtr->buckets[bucket].numLocks;
+    ++sharedPtr->buckets[bucket].numLocks;
 }
 
-
 static void
-UnlockBucket(Cache *cachePtr, int bucket)
+UnlockBucket(
+    Cache *cachePtr,
+    int bucket)
 {
-    Tcl_MutexUnlock(binfo[bucket].lockPtr);
+    Tcl_MutexUnlock(bucketInfo[bucket].lockPtr);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  PutBlocks --
+ * PutBlocks --
  *
  *	Return unused blocks to the shared cache.
  *
@@ -836,40 +831,42 @@ UnlockBucket(Cache *cachePtr, int bucket)
  */
 
 static void
-PutBlocks(Cache *cachePtr, int bucket, int nmove)
+PutBlocks(
+    Cache *cachePtr,
+    int bucket,
+    int numMove)
 {
     register Block *lastPtr, *firstPtr;
-    register int n = nmove;
+    register int n = numMove;
 
     /*
-     * Before acquiring the lock, walk the block list to find
-     * the last block to be moved.
+     * Before acquiring the lock, walk the block list to find the last block
+     * to be moved.
      */
 
     firstPtr = lastPtr = cachePtr->buckets[bucket].firstPtr;
     while (--n > 0) {
-	lastPtr = lastPtr->b_next;
+	lastPtr = lastPtr->nextBlock;
     }
-    cachePtr->buckets[bucket].firstPtr = lastPtr->b_next;
-    cachePtr->buckets[bucket].nfree -= nmove;
+    cachePtr->buckets[bucket].firstPtr = lastPtr->nextBlock;
+    cachePtr->buckets[bucket].numFree -= numMove;
 
     /*
-     * Aquire the lock and place the list of blocks at the front
-     * of the shared cache bucket.
+     * Aquire the lock and place the list of blocks at the front of the shared
+     * cache bucket.
      */
 
     LockBucket(cachePtr, bucket);
-    lastPtr->b_next = sharedPtr->buckets[bucket].firstPtr;
+    lastPtr->nextBlock = sharedPtr->buckets[bucket].firstPtr;
     sharedPtr->buckets[bucket].firstPtr = firstPtr;
-    sharedPtr->buckets[bucket].nfree += nmove;
+    sharedPtr->buckets[bucket].numFree += numMove;
     UnlockBucket(cachePtr, bucket);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
- *  GetBlocks --
+ * GetBlocks --
  *
  *	Get more blocks for a bucket.
  *
@@ -883,67 +880,69 @@ PutBlocks(Cache *cachePtr, int bucket, int nmove)
  */
 
 static int
-GetBlocks(Cache *cachePtr, int bucket)
+GetBlocks(
+    Cache *cachePtr,
+    int bucket)
 {
     register Block *blockPtr;
     register int n;
-    register size_t size;
 
     /*
-     * First, atttempt to move blocks from the shared cache.  Note
-     * the potentially dirty read of nfree before acquiring the lock
-     * which is a slight performance enhancement.  The value is
-     * verified after the lock is actually acquired.
+     * First, atttempt to move blocks from the shared cache. Note the
+     * potentially dirty read of numFree before acquiring the lock which is a
+     * slight performance enhancement. The value is verified after the lock is
+     * actually acquired.
      */
-     
-    if (cachePtr != sharedPtr && sharedPtr->buckets[bucket].nfree > 0) {
+
+    if (cachePtr != sharedPtr && sharedPtr->buckets[bucket].numFree > 0) {
 	LockBucket(cachePtr, bucket);
-	if (sharedPtr->buckets[bucket].nfree > 0) {
+	if (sharedPtr->buckets[bucket].numFree > 0) {
 
 	    /*
-	     * Either move the entire list or walk the list to find
-	     * the last block to move.
+	     * Either move the entire list or walk the list to find the last
+	     * block to move.
 	     */
 
-	    n = binfo[bucket].nmove;
-	    if (n >= sharedPtr->buckets[bucket].nfree) {
+	    n = bucketInfo[bucket].numMove;
+	    if (n >= sharedPtr->buckets[bucket].numFree) {
 		cachePtr->buckets[bucket].firstPtr =
-		    sharedPtr->buckets[bucket].firstPtr;
-		cachePtr->buckets[bucket].nfree =
-		    sharedPtr->buckets[bucket].nfree;
+			sharedPtr->buckets[bucket].firstPtr;
+		cachePtr->buckets[bucket].numFree =
+			sharedPtr->buckets[bucket].numFree;
 		sharedPtr->buckets[bucket].firstPtr = NULL;
-		sharedPtr->buckets[bucket].nfree = 0;
+		sharedPtr->buckets[bucket].numFree = 0;
 	    } else {
 		blockPtr = sharedPtr->buckets[bucket].firstPtr;
 		cachePtr->buckets[bucket].firstPtr = blockPtr;
-		sharedPtr->buckets[bucket].nfree -= n;
-		cachePtr->buckets[bucket].nfree = n;
+		sharedPtr->buckets[bucket].numFree -= n;
+		cachePtr->buckets[bucket].numFree = n;
 		while (--n > 0) {
-    		    blockPtr = blockPtr->b_next;
+		    blockPtr = blockPtr->nextBlock;
 		}
-		sharedPtr->buckets[bucket].firstPtr = blockPtr->b_next;
-		blockPtr->b_next = NULL;
+		sharedPtr->buckets[bucket].firstPtr = blockPtr->nextBlock;
+		blockPtr->nextBlock = NULL;
 	    }
 	}
 	UnlockBucket(cachePtr, bucket);
     }
-    
-    if (cachePtr->buckets[bucket].nfree == 0) {
+
+    if (cachePtr->buckets[bucket].numFree == 0) {
+	register size_t size;
 
 	/*
-	 * If no blocks could be moved from shared, first look for a
-	 * larger block in this cache to split up.
+	 * If no blocks could be moved from shared, first look for a larger
+	 * block in this cache to split up.
 	 */
 
-    	blockPtr = NULL;
+	blockPtr = NULL;
 	n = NBUCKETS;
 	size = 0; /* lint */
 	while (--n > bucket) {
-    	    if (cachePtr->buckets[n].nfree > 0) {
-		size = binfo[n].blocksize;
+	    if (cachePtr->buckets[n].numFree > 0) {
+		size = bucketInfo[n].blockSize;
 		blockPtr = cachePtr->buckets[n].firstPtr;
-		cachePtr->buckets[n].firstPtr = blockPtr->b_next;
-		--cachePtr->buckets[n].nfree;
+		cachePtr->buckets[n].firstPtr = blockPtr->nextBlock;
+		--cachePtr->buckets[n].numFree;
 		break;
 	    }
 	}
@@ -964,26 +963,26 @@ GetBlocks(Cache *cachePtr, int bucket)
 	 * Split the larger block into smaller blocks for this bucket.
 	 */
 
-	n = size / binfo[bucket].blocksize;
-	cachePtr->buckets[bucket].nfree = n;
+	n = size / bucketInfo[bucket].blockSize;
+	cachePtr->buckets[bucket].numFree = n;
 	cachePtr->buckets[bucket].firstPtr = blockPtr;
 	while (--n > 0) {
-	    blockPtr->b_next = (Block *) 
-		((char *) blockPtr + binfo[bucket].blocksize);
-	    blockPtr = blockPtr->b_next;
+	    blockPtr->nextBlock = (Block *)
+		((char *) blockPtr + bucketInfo[bucket].blockSize);
+	    blockPtr = blockPtr->nextBlock;
 	}
-	blockPtr->b_next = NULL;
+	blockPtr->nextBlock = NULL;
     }
     return 1;
 }
-
+
 /*
  *----------------------------------------------------------------------
  *
  * TclFinalizeThreadAlloc --
  *
- *	This procedure is used to destroy all private resources used in
- *	this file.
+ *	This procedure is used to destroy all private resources used in this
+ *	file.
  *
  * Results:
  *	None.
@@ -995,13 +994,13 @@ GetBlocks(Cache *cachePtr, int bucket)
  */
 
 void
-TclFinalizeThreadAlloc()
+TclFinalizeThreadAlloc(void)
 {
     unsigned int i;
 
     for (i = 0; i < NBUCKETS; ++i) {
-        TclpFreeAllocMutex(binfo[i].lockPtr); 
-        binfo[i].lockPtr = NULL;
+        TclpFreeAllocMutex(bucketInfo[i].lockPtr);
+        bucketInfo[i].lockPtr = NULL;
     }
 
     TclpFreeAllocMutex(objLockPtr);
@@ -1013,15 +1012,37 @@ TclFinalizeThreadAlloc()
     TclpFreeAllocCache(NULL);
 }
 
-#else /* ! defined(TCL_THREADS) && ! defined(USE_THREAD_ALLOC) */
+#else /* !(TCL_THREADS && USE_THREAD_ALLOC) */
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_GetMemoryInfo --
+ *
+ *	Return a list-of-lists of memory stats.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	List appended to given dstring.
+ *
+ *----------------------------------------------------------------------
+ */
 
+void
+Tcl_GetMemoryInfo(
+    Tcl_DString *dsPtr)
+{
+    Tcl_Panic("Tcl_GetMemoryInfo called when threaded memory allocator not in use");
+}
+
 /*
  *----------------------------------------------------------------------
  *
  * TclFinalizeThreadAlloc --
  *
- *	This procedure is used to destroy all private resources used in
- *	this file.
+ *	This procedure is used to destroy all private resources used in this
+ *	file.
  *
  * Results:
  *	None.
@@ -1033,9 +1054,16 @@ TclFinalizeThreadAlloc()
  */
 
 void
-TclFinalizeThreadAlloc()
+TclFinalizeThreadAlloc(void)
 {
-    Tcl_Panic("TclFinalizeThreadAlloc called when threaded memory allocator not in use.");
+    Tcl_Panic("TclFinalizeThreadAlloc called when threaded memory allocator not in use");
 }
-
-#endif /* TCL_THREADS */
+#endif /* TCL_THREADS && USE_THREAD_ALLOC */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclThreadJoin.c b/generic/tclThreadJoin.c
index f097924..3a905b5 100644
--- a/generic/tclThreadJoin.c
+++ b/generic/tclThreadJoin.c
@@ -1,69 +1,66 @@
-/* 
+/*
  * tclThreadJoin.c --
  *
- *	This file implements a platform independent emulation layer for
- *	the handling of joinable threads. The Mac and Windows platforms
- *	use this code to provide the functionality of joining threads.
- *	This code is currently not necessary on Unix.
+ *	This file implements a platform independent emulation layer for the
+ *	handling of joinable threads. The Windows platform uses this code to
+ *	provide the functionality of joining threads.  This code is currently
+ *	not necessary on Unix.
  *
  * Copyright (c) 2000 by Scriptics Corporation
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
-#if defined(WIN32)
+#ifdef WIN32
 
-/* The information about each joinable thread is remembered in a
- * structure as defined below.
+/*
+ * The information about each joinable thread is remembered in a structure as
+ * defined below.
  */
 
 typedef struct JoinableThread {
-  Tcl_ThreadId  id;                     /* The id of the joinable thread */
-  int           result;                 /* A place for the result after the
-					 * demise of the thread */
-  int           done;                   /* Boolean flag. Initialized to 0
-					 * and set to 1 after the exit of
-					 * the thread. This allows a thread
-					 * requesting a join to detect when
-					 * waiting is not necessary. */
-  int           waitedUpon;             /* Boolean flag. Initialized to 0
-					 * and set to 1 by the thread waiting
-					 * for this one via Tcl_JoinThread.
-					 * Used to lock any other thread
-					 * trying to wait on this one.
-					 */
-  Tcl_Mutex     threadMutex;            /* The mutex used to serialize access
-					 * to this structure. */
-  Tcl_Condition cond;                   /* This is the condition a thread has
-					 * to wait upon to get notified of the
-					 * end of the described thread. It is
-					 * signaled indirectly by
-					 * Tcl_ExitThread. */
-  struct JoinableThread* nextThreadPtr; /* Reference to the next thread in the
-					 * list of joinable threads */
+    Tcl_ThreadId  id;		/* The id of the joinable thread. */
+    int result;			/* A place for the result after the demise of
+				 * the thread. */
+    int done;			/* Boolean flag. Initialized to 0 and set to 1
+				 * after the exit of the thread. This allows a
+				 * thread requesting a join to detect when
+				 * waiting is not necessary. */
+    int waitedUpon;		/* Boolean flag. Initialized to 0 and set to 1
+				 * by the thread waiting for this one via
+				 * Tcl_JoinThread.  Used to lock any other
+				 * thread trying to wait on this one. */
+    Tcl_Mutex threadMutex;	/* The mutex used to serialize access to this
+				 * structure. */
+    Tcl_Condition cond;		/* This is the condition a thread has to wait
+				 * upon to get notified of the end of the
+				 * described thread. It is signaled indirectly
+				 * by Tcl_ExitThread. */
+    struct JoinableThread *nextThreadPtr;
+				/* Reference to the next thread in the list of
+				 * joinable threads. */
 } JoinableThread;
 
-/* The following variable is used to maintain the global list of all
- * joinable threads. Usage by a thread is allowed only if the
- * thread acquired the 'joinMutex'.
+/*
+ * The following variable is used to maintain the global list of all joinable
+ * threads. Usage by a thread is allowed only if the thread acquired the
+ * 'joinMutex'.
  */
 
 TCL_DECLARE_MUTEX(joinMutex)
 
 static JoinableThread* firstThreadPtr;
-
-
 
 /*
  *----------------------------------------------------------------------
  *
  * TclJoinThread --
  *
- *	This procedure waits for the exit of the thread with the specified
- *	id and returns its result.
+ *	This procedure waits for the exit of the thread with the specified id
+ *	and returns its result.
  *
  * Results:
  *	A standard tcl result signaling the overall success/failure of the
@@ -72,135 +69,139 @@ static JoinableThread* firstThreadPtr;
  *
  * Side effects:
  *	Deallocates the memory allocated by TclRememberJoinableThread.
- *	Removes the data associated to the thread waited upon from the
- *	list of joinable threads.
+ *	Removes the data associated to the thread waited upon from the list of
+ *	joinable threads.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclJoinThread(id, result)
-    Tcl_ThreadId id;     /* The id of the thread to wait upon. */
-    int*         result; /* Reference to a location for the result
-			  * of the thread we are waiting upon. */
+TclJoinThread(
+    Tcl_ThreadId id,		/* The id of the thread to wait upon. */
+    int *result)		/* Reference to a location for the result of
+				 * the thread we are waiting upon. */
 {
-    /* Steps done here:
+    JoinableThread *threadPtr;
+
+    /*
+     * Steps done here:
      * i.    Acquire the joinMutex and search for the thread.
      * ii.   Error out if it could not be found.
      * iii.  If found, switch from exclusive access to the list to exclusive
-     *       access to the thread structure.
+     *	     access to the thread structure.
      * iv.   Error out if some other is already waiting.
      * v.    Skip the waiting part of the thread is already done.
      * vi.   Wait for the thread to exit, mark it as waited upon too.
-     * vii.  Get the result form the structure, 
+     * vii.  Get the result form the structure,
      * viii. switch to exclusive access of the list,
      * ix.   remove the structure from the list,
      * x.    then switch back to exclusive access to the structure
      * xi.   and delete it.
      */
 
-    JoinableThread* threadPtr;
+    Tcl_MutexLock(&joinMutex);
 
-    Tcl_MutexLock (&joinMutex);
-
-    for (threadPtr = firstThreadPtr;
-	 (threadPtr != (JoinableThread*) NULL) && (threadPtr->id != id);
-	 threadPtr = threadPtr->nextThreadPtr)
-        /* empty body */
-      ;
+    threadPtr = firstThreadPtr;
+    while (threadPtr!=NULL && threadPtr->id!=id) {
+	threadPtr = threadPtr->nextThreadPtr;
+    }
 
-    if (threadPtr == (JoinableThread*) NULL) {
-        /* Thread not found. Either not joinable, or already waited
-	 * upon and exited. Whatever, an error is in order.
+    if (threadPtr == NULL) {
+	/*
+	 * Thread not found. Either not joinable, or already waited upon and
+	 * exited. Whatever, an error is in order.
 	 */
 
-      Tcl_MutexUnlock (&joinMutex);
-      return TCL_ERROR;
+	Tcl_MutexUnlock(&joinMutex);
+	return TCL_ERROR;
     }
 
-    /* [1] If we don't lock the structure before giving up exclusive access
-     * to the list some other thread just completing its wait on the same
-     * thread can delete the structure from under us, leaving us with a
-     * dangling pointer.
+    /*
+     * [1] If we don't lock the structure before giving up exclusive access to
+     * the list some other thread just completing its wait on the same thread
+     * can delete the structure from under us, leaving us with a dangling
+     * pointer.
      */
 
-    Tcl_MutexLock   (&threadPtr->threadMutex);
-    Tcl_MutexUnlock (&joinMutex);
+    Tcl_MutexLock(&threadPtr->threadMutex);
+    Tcl_MutexUnlock(&joinMutex);
 
-    /* [2] Now that we have the structure mutex any other thread that just
-     * tries to delete structure will wait at location [3] until we are
-     * done with the structure. And in that case we are done with it
-     * rather quickly as 'waitedUpon' will be set and we will have to
-     * error out.
+    /*
+     * [2] Now that we have the structure mutex any other thread that just
+     * tries to delete structure will wait at location [3] until we are done
+     * with the structure. And in that case we are done with it rather quickly
+     * as 'waitedUpon' will be set and we will have to error out.
      */
 
     if (threadPtr->waitedUpon) {
-        Tcl_MutexUnlock (&threadPtr->threadMutex);
+	Tcl_MutexUnlock(&threadPtr->threadMutex);
 	return TCL_ERROR;
     }
 
-    /* We are waiting now, let other threads recognize this
+    /*
+     * We are waiting now, let other threads recognize this.
      */
 
     threadPtr->waitedUpon = 1;
 
     while (!threadPtr->done) {
-      Tcl_ConditionWait (&threadPtr->cond, &threadPtr->threadMutex, NULL);
+	Tcl_ConditionWait(&threadPtr->cond, &threadPtr->threadMutex, NULL);
     }
 
-    /* We have to release the structure before trying to access the list
-     * again or we can run into deadlock with a thread at [1] (see above)
-     * because of us holding the structure and the other holding the list.
-     * There is no problem with dangling pointers here as 'waitedUpon == 1'
-     * is still valid and any other thread will error out and not come to
-     * this place. IOW, the fact that we are here also means that no other
-     * thread came here before us and is able to delete the structure.
+    /*
+     * We have to release the structure before trying to access the list again
+     * or we can run into deadlock with a thread at [1] (see above) because of
+     * us holding the structure and the other holding the list.  There is no
+     * problem with dangling pointers here as 'waitedUpon == 1' is still valid
+     * and any other thread will error out and not come to this place. IOW,
+     * the fact that we are here also means that no other thread came here
+     * before us and is able to delete the structure.
      */
 
-    Tcl_MutexUnlock (&threadPtr->threadMutex);
-    Tcl_MutexLock   (&joinMutex);
+    Tcl_MutexUnlock(&threadPtr->threadMutex);
+    Tcl_MutexLock(&joinMutex);
 
-    /* We have to search the list again as its structure may (may, almost
+    /*
+     * We have to search the list again as its structure may (may, almost
      * certainly) have changed while we were waiting. Especially now is the
-     * time to compute the predecessor in the list. Any earlier result can
-     * be dangling by now.
+     * time to compute the predecessor in the list. Any earlier result can be
+     * dangling by now.
      */
 
     if (firstThreadPtr == threadPtr) {
-        firstThreadPtr = threadPtr->nextThreadPtr;
+	firstThreadPtr = threadPtr->nextThreadPtr;
     } else {
-        JoinableThread* prevThreadPtr;
-
-	for (prevThreadPtr = firstThreadPtr;
-	     prevThreadPtr->nextThreadPtr != threadPtr;
-	     prevThreadPtr = prevThreadPtr->nextThreadPtr)
-	    /* empty body */
-	  ;
+	JoinableThread *prevThreadPtr = firstThreadPtr;
 
+	while (prevThreadPtr->nextThreadPtr != threadPtr) {
+	    prevThreadPtr = prevThreadPtr->nextThreadPtr;
+	}
 	prevThreadPtr->nextThreadPtr = threadPtr->nextThreadPtr;
     }
 
-    Tcl_MutexUnlock (&joinMutex);
+    Tcl_MutexUnlock(&joinMutex);
 
-    /* [3] Now that the structure is not part of the list anymore no other
+    /*
+     * [3] Now that the structure is not part of the list anymore no other
      * thread can acquire its mutex from now on. But it is possible that
-     * another thread is still holding the mutex though, see location [2].
-     * So we have to acquire the mutex one more time to wait for that thread
-     * to finish. We can (and have to) release the mutex immediately.
+     * another thread is still holding the mutex though, see location [2].  So
+     * we have to acquire the mutex one more time to wait for that thread to
+     * finish. We can (and have to) release the mutex immediately.
      */
 
-    Tcl_MutexLock   (&threadPtr->threadMutex);
-    Tcl_MutexUnlock (&threadPtr->threadMutex);
+    Tcl_MutexLock(&threadPtr->threadMutex);
+    Tcl_MutexUnlock(&threadPtr->threadMutex);
 
-    /* Copy the result to us, finalize the synchronisation objects, then
-     * free the structure and return.
+    /*
+     * Copy the result to us, finalize the synchronisation objects, then free
+     * the structure and return.
      */
 
     *result = threadPtr->result;
 
-    Tcl_ConditionFinalize (&threadPtr->cond);
-    Tcl_MutexFinalize (&threadPtr->threadMutex);
-    ckfree ((VOID*) threadPtr);
+    Tcl_ConditionFinalize(&threadPtr->cond);
+    Tcl_MutexFinalize(&threadPtr->threadMutex);
+    ckfree((char *) threadPtr);
 
     return TCL_OK;
 }
@@ -211,39 +212,37 @@ TclJoinThread(id, result)
  * TclRememberJoinableThread --
  *
  *	This procedure remebers a thread as joinable. Only a call to
- *	TclJoinThread will remove the structre created (and initialized)
- *	here. IOW, not waiting upon a joinable thread will cause memory
- *	leaks.
+ *	TclJoinThread will remove the structre created (and initialized) here.
+ *	IOW, not waiting upon a joinable thread will cause memory leaks.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Allocates memory, adds it to the global list of all joinable
- *	threads.
+ *	Allocates memory, adds it to the global list of all joinable threads.
  *
  *----------------------------------------------------------------------
  */
 
-VOID
-TclRememberJoinableThread(id)
-    Tcl_ThreadId id; /* The thread to remember as joinable */
+void
+TclRememberJoinableThread(
+    Tcl_ThreadId id)		/* The thread to remember as joinable */
 {
-    JoinableThread* threadPtr;
+    JoinableThread *threadPtr;
 
-    threadPtr = (JoinableThread*) ckalloc (sizeof (JoinableThread));
-    threadPtr->id          = id;
-    threadPtr->done        = 0;
-    threadPtr->waitedUpon  = 0;
+    threadPtr = (JoinableThread *) ckalloc(sizeof(JoinableThread));
+    threadPtr->id = id;
+    threadPtr->done = 0;
+    threadPtr->waitedUpon = 0;
     threadPtr->threadMutex = (Tcl_Mutex) NULL;
-    threadPtr->cond        = (Tcl_Condition) NULL;
+    threadPtr->cond = (Tcl_Condition) NULL;
 
-    Tcl_MutexLock (&joinMutex);
+    Tcl_MutexLock(&joinMutex);
 
     threadPtr->nextThreadPtr = firstThreadPtr;
-    firstThreadPtr           = threadPtr;
+    firstThreadPtr = threadPtr;
 
-    Tcl_MutexUnlock (&joinMutex);
+    Tcl_MutexUnlock(&joinMutex);
 }
 
 /*
@@ -251,9 +250,9 @@ TclRememberJoinableThread(id)
  *
  * TclSignalExitThread --
  *
- *	This procedure signals that the specified thread is done with
- *	its work. If the thread is joinable this signal is propagated
- *	to the thread waiting upon it.
+ *	This procedure signals that the specified thread is done with its
+ *	work. If the thread is joinable this signal is propagated to the
+ *	thread waiting upon it.
  *
  * Results:
  *	None.
@@ -264,46 +263,54 @@ TclRememberJoinableThread(id)
  *----------------------------------------------------------------------
  */
 
-VOID
-TclSignalExitThread(id,result)
-    Tcl_ThreadId id;     /* Id of the thread signaling its exit */
-    int          result; /* The result from the thread */
+void
+TclSignalExitThread(
+    Tcl_ThreadId id,		/* Id of the thread signaling its exit. */
+    int result)			/* The result from the thread. */
 {
-    JoinableThread* threadPtr;
+    JoinableThread *threadPtr;
 
-    Tcl_MutexLock (&joinMutex);
+    Tcl_MutexLock(&joinMutex);
 
-    for (threadPtr = firstThreadPtr;
-	 (threadPtr != (JoinableThread*) NULL) && (threadPtr->id != id);
-	 threadPtr = threadPtr->nextThreadPtr)
-        /* empty body */
-      ;
+    threadPtr = firstThreadPtr;
+    while ((threadPtr != NULL) && (threadPtr->id != id)) {
+	threadPtr = threadPtr->nextThreadPtr;
+    }
 
-    if (threadPtr == (JoinableThread*) NULL) {
-        /* Thread not found. Not joinable. No problem, nothing to do.
+    if (threadPtr == NULL) {
+	/*
+	 * Thread not found. Not joinable. No problem, nothing to do.
 	 */
 
-        Tcl_MutexUnlock (&joinMutex);
+	Tcl_MutexUnlock(&joinMutex);
 	return;
     }
 
-    /* Switch over the exclusive access from the list to the structure,
-     * then store the result, set the flag and notify the waiting thread,
-     * provided that it exists. The order of lock/unlock ensures that a
-     * thread entering 'TclJoinThread' will not interfere with us.
+    /*
+     * Switch over the exclusive access from the list to the structure, then
+     * store the result, set the flag and notify the waiting thread, provided
+     * that it exists. The order of lock/unlock ensures that a thread entering
+     * 'TclJoinThread' will not interfere with us.
      */
 
-    Tcl_MutexLock   (&threadPtr->threadMutex);
-    Tcl_MutexUnlock (&joinMutex);
+    Tcl_MutexLock(&threadPtr->threadMutex);
+    Tcl_MutexUnlock(&joinMutex);
 
-    threadPtr->done   = 1;
+    threadPtr->done = 1;
     threadPtr->result = result;
 
     if (threadPtr->waitedUpon) {
-      Tcl_ConditionNotify (&threadPtr->cond);
+	Tcl_ConditionNotify(&threadPtr->cond);
     }
 
-    Tcl_MutexUnlock (&threadPtr->threadMutex);
+    Tcl_MutexUnlock(&threadPtr->threadMutex);
 }
-
 #endif /* WIN32 */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclThreadStorage.c b/generic/tclThreadStorage.c
new file mode 100644
index 0000000..f1df888
--- /dev/null
+++ b/generic/tclThreadStorage.c
@@ -0,0 +1,597 @@
+/*
+ * tclThreadStorage.c --
+ *
+ *	This file implements platform independent thread storage operations.
+ *
+ * Copyright (c) 2003-2004 by Joe Mistachkin
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+#if defined(TCL_THREADS)
+
+/*
+ * This is the thread storage cache array and it's accompanying mutex. The
+ * elements are pairs of thread Id and an associated hash table pointer; the
+ * hash table being pointed to contains the thread storage for it's associated
+ * thread. The purpose of this cache is to minimize the number of hash table
+ * lookups in the master thread storage hash table.
+ */
+
+static Tcl_Mutex threadStorageLock;
+
+/*
+ * This is the struct used for a thread storage cache slot. It contains the
+ * owning thread Id and the associated hash table pointer.
+ */
+
+typedef struct ThreadStorage {
+    Tcl_ThreadId id;		/* the owning thread id */
+    Tcl_HashTable *hashTablePtr;/* the hash table for the thread */
+} ThreadStorage;
+
+/*
+ * These are the prototypes for the custom hash table allocation functions
+ * used by the thread storage subsystem.
+ */
+
+static Tcl_HashEntry *	AllocThreadStorageEntry(Tcl_HashTable *tablePtr,
+			    void *keyPtr);
+static void		FreeThreadStorageEntry(Tcl_HashEntry *hPtr);
+static Tcl_HashTable *	ThreadStorageGetHashTable(Tcl_ThreadId id);
+
+/*
+ * This is the hash key type for thread storage. We MUST use this in
+ * combination with the new hash key type flag TCL_HASH_KEY_SYSTEM_HASH
+ * because these hash tables MAY be used by the threaded memory allocator.
+ */
+
+static Tcl_HashKeyType tclThreadStorageHashKeyType = {
+    TCL_HASH_KEY_TYPE_VERSION,		/* version */
+    TCL_HASH_KEY_SYSTEM_HASH | TCL_HASH_KEY_RANDOMIZE_HASH,
+				        /* flags */
+    NULL,				/* hashKeyProc */
+    NULL,				/* compareKeysProc */
+    AllocThreadStorageEntry,		/* allocEntryProc */
+    FreeThreadStorageEntry		/* freeEntryProc */
+};
+
+/*
+ * This is an invalid thread value.
+ */
+
+#define STORAGE_INVALID_THREAD  (Tcl_ThreadId)0
+
+/*
+ * This is the value for an invalid thread storage key.
+ */
+
+#define STORAGE_INVALID_KEY	0
+
+/*
+ * This is the first valid key for use by external callers. All the values
+ * below this are RESERVED for future use.
+ */
+
+#define STORAGE_FIRST_KEY	1
+
+/*
+ * This is the default number of thread storage cache slots. This define may
+ * need to be fine tuned for maximum performance.
+ */
+
+#define STORAGE_CACHE_SLOTS	97
+
+/*
+ * This is the master thread storage hash table. It is keyed on thread Id and
+ * contains values that are hash tables for each thread. The thread specific
+ * hash tables contain the actual thread storage.
+ */
+
+static Tcl_HashTable threadStorageHashTable;
+
+/*
+ * This is the next thread data key value to use. We increment this everytime
+ * we "allocate" one. It is initially set to 1 in TclInitThreadStorage.
+ */
+
+static int nextThreadStorageKey = STORAGE_INVALID_KEY;
+
+/*
+ * This is the master thread storage cache. Per Kevin Kenny's idea, this
+ * prevents unnecessary lookups for threads that use a lot of thread storage.
+ */
+
+static volatile ThreadStorage threadStorageCache[STORAGE_CACHE_SLOTS];
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AllocThreadStorageEntry --
+ *
+ *	Allocate space for a Tcl_HashEntry using TclpSysAlloc (not ckalloc).
+ *	We do this because the threaded memory allocator MAY use the thread
+ *	storage hash tables.
+ *
+ * Results:
+ *	The return value is a pointer to the created entry.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_HashEntry *
+AllocThreadStorageEntry(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    void *keyPtr)		/* Key to store in the hash table entry. */
+{
+    Tcl_HashEntry *hPtr;
+
+    hPtr = (Tcl_HashEntry *) TclpSysAlloc(sizeof(Tcl_HashEntry), 0);
+    hPtr->key.oneWordValue = keyPtr;
+    hPtr->clientData = NULL;
+    
+    return hPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeThreadStorageEntry --
+ *
+ *	Frees space for a Tcl_HashEntry using TclpSysFree (not ckfree). We do
+ *	this because the threaded memory allocator MAY use the thread storage
+ *	hash tables.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeThreadStorageEntry(
+    Tcl_HashEntry *hPtr)	/* Hash entry to free. */
+{
+    TclpSysFree((char *) hPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * ThreadStorageGetHashTable --
+ *
+ *	This procedure returns a hash table pointer to be used for thread
+ *	storage for the specified thread. 
+ *
+ * Results:
+ *	A hash table pointer for the specified thread, or NULL if the hash
+ *	table has not been created yet.
+ *
+ * Side effects:
+ *	May change an entry in the master thread storage cache to point to the
+ *	specified thread and it's associated hash table.
+ *
+ * Thread safety:
+ *	This function assumes that integer operations are safe (atomic)
+ *	on all (currently) supported Tcl platforms.  Hence there are 
+ * 	places where shared integer arithmetic is done w/o protective locks.    
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_HashTable *
+ThreadStorageGetHashTable(
+    Tcl_ThreadId id)		/* Id of thread to get hash table for */
+{
+    int index = PTR2UINT(id) % STORAGE_CACHE_SLOTS;
+    Tcl_HashEntry *hPtr;
+    int isNew;
+    Tcl_HashTable *hashTablePtr;
+
+    /*
+     * It's important that we pick up the hash table pointer BEFORE comparing
+     * thread Id in case another thread is in the critical region changing
+     * things out from under you.
+     *
+     * Thread safety: threadStorageCache is accessed w/o locks in order to
+     * avoid serialization of all threads at this hot-spot. It is safe to
+     * do this here because (threadStorageCache[index].id != id) test below
+     * should be atomic on all (currently) supported platforms and there 
+     * are no devastatig side effects of the test.
+     *
+     * Note Valgrind users: this place will show up as a race-condition in
+     * helgrind-tool output. To silence this warnings, define VALGRIND
+     * symbol at compilation time. 
+     */
+
+#if !defined(VALGRIND)
+    hashTablePtr = threadStorageCache[index].hashTablePtr;
+    if (threadStorageCache[index].id != id) {
+	Tcl_MutexLock(&threadStorageLock);
+#else
+    Tcl_MutexLock(&threadStorageLock);
+    hashTablePtr = threadStorageCache[index].hashTablePtr;
+    if (threadStorageCache[index].id != id) {
+#endif
+
+	/*
+	 * It's not in the cache, so we look it up...
+	 */
+
+	hPtr = Tcl_FindHashEntry(&threadStorageHashTable, (char *) id);
+
+	if (hPtr != NULL) {
+	    /*
+	     * We found it, extract the hash table pointer.
+	     */
+
+	    hashTablePtr = Tcl_GetHashValue(hPtr);
+	} else {
+	    /*
+	     * The thread specific hash table is not found.
+	     */
+
+	    hashTablePtr = NULL;
+	}
+
+	if (hashTablePtr == NULL) {
+	    hashTablePtr = (Tcl_HashTable *)
+		    TclpSysAlloc(sizeof(Tcl_HashTable), 0);
+
+	    if (hashTablePtr == NULL) {
+		Tcl_Panic("could not allocate thread specific hash table, "
+			"TclpSysAlloc failed from ThreadStorageGetHashTable!");
+	    }
+	    Tcl_InitCustomHashTable(hashTablePtr, TCL_CUSTOM_TYPE_KEYS,
+		    &tclThreadStorageHashKeyType);
+
+	    /*
+	     * Add new thread storage hash table to the master hash table.
+	     */
+
+	    hPtr = Tcl_CreateHashEntry(&threadStorageHashTable, (char *) id,
+		    &isNew);
+
+	    if (hPtr == NULL) {
+		Tcl_Panic("Tcl_CreateHashEntry failed from "
+			"ThreadStorageGetHashTable!");
+	    }
+	    Tcl_SetHashValue(hPtr, hashTablePtr);
+	}
+
+	/*
+	 * Now, we put it in the cache since it is highly likely it will be
+	 * needed again shortly.
+	 */
+
+	threadStorageCache[index].id = id;
+	threadStorageCache[index].hashTablePtr = hashTablePtr;
+#if !defined(VALGRIND)
+	Tcl_MutexUnlock(&threadStorageLock);
+    }
+#else
+    }
+    Tcl_MutexUnlock(&threadStorageLock);
+#endif
+
+    return hashTablePtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInitThreadStorage --
+ *
+ *	Initializes the thread storage allocator.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	This procedure initializes the master hash table that maps thread ID
+ *	onto the individual index tables that map thread data key to thread
+ *	data. It also creates a cache that enables fast lookup of the thread
+ *	data block array for a recently executing thread without using
+ *	spinlocks.
+ *
+ * This procedure is called from an extremely early point in Tcl's
+ * initialization. In particular, it may not use ckalloc/ckfree because they
+ * may depend on thread-local storage (it uses TclpSysAlloc and TclpSysFree
+ * instead). It may not depend on synchronization primitives - but no threads
+ * other than the master thread have yet been launched.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclInitThreadStorage(void)
+{
+    Tcl_InitCustomHashTable(&threadStorageHashTable, TCL_CUSTOM_TYPE_KEYS,
+	    &tclThreadStorageHashKeyType);
+
+    /*
+     * We also initialize the cache.
+     */
+
+    memset((void*) &threadStorageCache, 0,
+	    sizeof(ThreadStorage) * STORAGE_CACHE_SLOTS);
+
+    /*
+     * Now, we set the first value to be used for a thread data key.
+     */
+
+    nextThreadStorageKey = STORAGE_FIRST_KEY;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpThreadDataKeyGet --
+ *
+ *	This procedure returns a pointer to a block of thread local storage.
+ *
+ * Results:
+ *	A thread-specific pointer to the data structure, or NULL if the memory
+ *	has not been assigned to this key for this thread.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void *
+TclpThreadDataKeyGet(
+    Tcl_ThreadDataKey *keyPtr)	/* Identifier for the data chunk, really
+				 * (int**) */
+{
+    Tcl_HashTable *hashTablePtr =
+	    ThreadStorageGetHashTable(Tcl_GetCurrentThread());
+    Tcl_HashEntry *hPtr = Tcl_FindHashEntry(hashTablePtr, (char *) keyPtr);
+
+    if (hPtr == NULL) {
+	return NULL;
+    }
+    return Tcl_GetHashValue(hPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpThreadDataKeySet --
+ *
+ *	This procedure sets the pointer to a block of thread local storage.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets up the thread so future calls to TclpThreadDataKeyGet with this
+ *	key will return the data pointer.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpThreadDataKeySet(
+    Tcl_ThreadDataKey *keyPtr,	/* Identifier for the data chunk, really
+				 * (pthread_key_t **) */
+    void *data)			/* Thread local storage */
+{
+    Tcl_HashTable *hashTablePtr;
+    Tcl_HashEntry *hPtr;
+    int dummy;
+
+    hashTablePtr = ThreadStorageGetHashTable(Tcl_GetCurrentThread());
+    hPtr = Tcl_CreateHashEntry(hashTablePtr, (char *)keyPtr, &dummy);
+
+    Tcl_SetHashValue(hPtr, data);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclpFinalizeThreadDataThread --
+ *
+ *	This procedure cleans up the thread storage hash table for the
+ *	current thread.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Frees all associated thread storage, all hash table entries for
+ *	the thread's thread storage, and the hash table itself.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclpFinalizeThreadDataThread(void)
+{
+    Tcl_ThreadId id = Tcl_GetCurrentThread();
+				/* Id of the thread to finalize. */
+    int index = PTR2UINT(id) % STORAGE_CACHE_SLOTS;
+    Tcl_HashEntry *hPtr;	/* Hash entry for current thread in master
+				 * table. */
+    Tcl_HashTable* hashTablePtr;/* Pointer to the hash table holding TSD
+				 * blocks for the current thread*/
+    Tcl_HashSearch search;	/* Search object to walk the TSD blocks in the
+				 * designated thread */
+    Tcl_HashEntry *hPtr2;	/* Hash entry for a TSD block in the
+				 * designated thread. */
+
+    Tcl_MutexLock(&threadStorageLock);
+    hPtr = Tcl_FindHashEntry(&threadStorageHashTable, (char*)id);
+    if (hPtr == NULL) {
+	hashTablePtr = NULL;
+    } else {
+	/*
+	 * We found it, extract the hash table pointer.
+	 */
+
+	hashTablePtr = Tcl_GetHashValue(hPtr);
+	Tcl_DeleteHashEntry(hPtr);
+
+	/*
+	 * Make sure cache entry for this thread is NULL.
+	 */
+
+	if (threadStorageCache[index].id == id) {
+	    /*
+	     * We do not step on another thread's cache entry. This is
+	     * especially important if we are creating and exiting a lot of
+	     * threads.
+	     */
+
+	    threadStorageCache[index].id = STORAGE_INVALID_THREAD;
+	    threadStorageCache[index].hashTablePtr = NULL;
+	}
+    }
+    Tcl_MutexUnlock(&threadStorageLock);
+
+    /*
+     * The thread's hash table has been extracted and removed from the master
+     * hash table. Now clean up the thread.
+     */
+
+    if (hashTablePtr != NULL) {
+	/*
+	 * Free all TSD
+	 */
+
+	for (hPtr2 = Tcl_FirstHashEntry(hashTablePtr, &search); hPtr2 != NULL;
+		hPtr2 = Tcl_NextHashEntry(&search)) {
+	    void *blockPtr = Tcl_GetHashValue(hPtr2);
+
+	    if (blockPtr != NULL) {
+		/*
+		 * The block itself was allocated in Tcl_GetThreadData using
+		 * ckalloc; use ckfree to dispose of it.
+		 */
+
+		ckfree(blockPtr);
+	    }
+	}
+
+	/*
+	 * Delete thread specific hash table and free the struct.
+	 */
+
+	Tcl_DeleteHashTable(hashTablePtr);
+	TclpSysFree((char *) hashTablePtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFinalizeThreadStorage --
+ *
+ *	This procedure cleans up the master thread storage hash table, all
+ *	thread specific hash tables, and the thread storage cache.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The master thread storage hash table and thread storage cache are
+ *	reset to their initial (empty) state.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclFinalizeThreadStorage(void)
+{
+    Tcl_HashSearch search;	/* We need to hit every thread with this
+				 * search. */
+    Tcl_HashEntry *hPtr;	/* Hash entry for current thread in master
+				 * table. */
+    Tcl_MutexLock(&threadStorageLock);
+
+    /*
+     * We are going to delete the hash table for every thread now. This hash
+     * table should be empty at this point, except for one entry for the
+     * current thread.
+     */
+
+    for (hPtr = Tcl_FirstHashEntry(&threadStorageHashTable, &search);
+	    hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
+	Tcl_HashTable *hashTablePtr = Tcl_GetHashValue(hPtr);
+
+	if (hashTablePtr != NULL) {
+	    /*
+	     * Delete thread specific hash table for the thread in question
+	     * and free the struct.
+	     */
+
+	    Tcl_DeleteHashTable(hashTablePtr);
+	    TclpSysFree((char *)hashTablePtr);
+	}
+
+	/*
+	 * Delete thread specific entry from master hash table.
+	 */
+
+	Tcl_SetHashValue(hPtr, NULL);
+    }
+
+    Tcl_DeleteHashTable(&threadStorageHashTable);
+
+    /*
+     * Clear out the thread storage cache as well.
+     */
+
+    memset((void*) &threadStorageCache, 0,
+	    sizeof(ThreadStorage) * STORAGE_CACHE_SLOTS);
+
+    /*
+     * Reset this to zero, it will be set to STORAGE_FIRST_KEY if the thread
+     * storage subsystem gets reinitialized
+     */
+
+    nextThreadStorageKey = STORAGE_INVALID_KEY;
+
+    Tcl_MutexUnlock(&threadStorageLock);
+}
+
+#else /* !defined(TCL_THREADS) */
+
+/*
+ * Stub functions for non-threaded builds
+ */
+
+void
+TclInitThreadStorage(void)
+{
+}
+
+void
+TclpFinalizeThreadDataThread(void)
+{
+}
+
+void
+TclFinalizeThreadStorage(void)
+{
+}
+
+#endif /* defined(TCL_THREADS) && defined(USE_THREAD_STORAGE) */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclThreadTest.c b/generic/tclThreadTest.c
index 9d17f56..d032cc6 100644
--- a/generic/tclThreadTest.c
+++ b/generic/tclThreadTest.c
@@ -1,29 +1,31 @@
-/* 
+/*
  * tclThreadTest.c --
  *
- *	This file implements the testthread command.  Eventually this
- *	should be tclThreadCmd.c
+ *	This file implements the testthread command. Eventually this should be
+ *	tclThreadCmd.c
  *	Some of this code is based on work done by Richard Hipp on behalf of
  *	Conservation Through Innovation, Limited, with their permission.
  *
  * Copyright (c) 1998 by Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
 
+extern int	Tcltest_Init(Tcl_Interp *interp);
+
 #ifdef TCL_THREADS
 /*
- * Each thread has an single instance of the following structure.  There
- * is one instance of this structure per thread even if that thread contains
- * multiple interpreters.  The interpreter identified by this structure is
- * the main interpreter for the thread.  
- *
- * The main interpreter is the one that will process any messages 
- * received by a thread.  Any thread can send messages but only the
- * main interpreter can receive them.
+ * Each thread has an single instance of the following structure. There is one
+ * instance of this structure per thread even if that thread contains multiple
+ * interpreters. The interpreter identified by this structure is the main
+ * interpreter for the thread.
+ *
+ * The main interpreter is the one that will process any messages received by
+ * a thread. Any thread can send messages but only the main interpreter can
+ * receive them.
  */
 
 typedef struct ThreadSpecificData {
@@ -36,8 +38,8 @@ typedef struct ThreadSpecificData {
 static Tcl_ThreadDataKey dataKey;
 
 /*
- * This list is used to list all threads that have interpreters.
- * This is protected by threadMutex.
+ * This list is used to list all threads that have interpreters. This is
+ * protected by threadMutex.
  */
 
 static struct ThreadSpecificData *threadList;
@@ -55,16 +57,18 @@ static struct ThreadSpecificData *threadList;
  */
 
 typedef struct ThreadCtrl {
-    char *script;    /* The TCL command this thread should execute */
-    int flags;        /* Initial value of the "flags" field in the 
-                       * ThreadSpecificData structure for the new thread.
-                       * Might contain TP_Detached or TP_TclThread. */
-    Tcl_Condition condWait;
-    /* This condition variable is used to synchronize
-     * the parent and child threads.  The child won't run
-     * until it acquires threadMutex, and the parent function
-     * won't complete until signaled on this condition
-     * variable. */
+    const char *script;	/* The Tcl command this thread should
+				 * execute */
+    int flags;			/* Initial value of the "flags" field in the
+				 * ThreadSpecificData structure for the new
+				 * thread. Might contain TP_Detached or
+				 * TP_TclThread. */
+    Tcl_Condition condWait;	/* This condition variable is used to
+				 * synchronize the parent and child threads.
+				 * The child won't run until it acquires
+				 * threadMutex, and the parent function won't
+				 * complete until signaled on this condition
+				 * variable. */
 } ThreadCtrl;
 
 /*
@@ -75,8 +79,8 @@ typedef struct ThreadEvent {
     Tcl_Event event;		/* Must be first */
     char *script;		/* The script to execute. */
     struct ThreadEventResult *resultPtr;
-				/* To communicate the result.  This is
-				 * NULL if we don't care about it. */
+				/* To communicate the result. This is NULL if
+				 * we don't care about it. */
 } ThreadEvent;
 
 typedef struct ThreadEventResult {
@@ -102,9 +106,9 @@ static ThreadEventResult *resultList;
 static Tcl_ThreadId errorThreadId;
 static char *errorProcString;
 
-/* 
- * Access to the list of threads and to the thread send results is
- * guarded by this mutex. 
+/*
+ * Access to the list of threads and to the thread send results is guarded by
+ * this mutex.
  */
 
 TCL_DECLARE_MUTEX(threadMutex)
@@ -112,28 +116,28 @@ TCL_DECLARE_MUTEX(threadMutex)
 #undef TCL_STORAGE_CLASS
 #define TCL_STORAGE_CLASS DLLEXPORT
 
-EXTERN int	TclThread_Init _ANSI_ARGS_((Tcl_Interp *interp));
-EXTERN int	Tcl_ThreadObjCmd _ANSI_ARGS_((ClientData clientData,
-	Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
-EXTERN int	TclCreateThread _ANSI_ARGS_((Tcl_Interp *interp,
-	char *script, int joinable));
-EXTERN int	TclThreadList _ANSI_ARGS_((Tcl_Interp *interp));
-EXTERN int	TclThreadSend _ANSI_ARGS_((Tcl_Interp *interp, Tcl_ThreadId id,
-	char *script, int wait));
+EXTERN int		TclThread_Init(Tcl_Interp *interp);
+EXTERN int		Tcl_ThreadObjCmd(ClientData clientData,
+			    Tcl_Interp *interp, int objc,
+			    Tcl_Obj *const objv[]);
+EXTERN int		TclCreateThread(Tcl_Interp *interp, const char *script,
+			    int joinable);
+EXTERN int		TclThreadList(Tcl_Interp *interp);
+EXTERN int		TclThreadSend(Tcl_Interp *interp, Tcl_ThreadId id,
+			    const char *script, int wait);
 
 #undef TCL_STORAGE_CLASS
 #define TCL_STORAGE_CLASS DLLIMPORT
 
-Tcl_ThreadCreateType	NewTestThread _ANSI_ARGS_((ClientData clientData));
-static void	ListRemove _ANSI_ARGS_((ThreadSpecificData *tsdPtr));
-static void	ListUpdateInner _ANSI_ARGS_((ThreadSpecificData *tsdPtr));
-static int	ThreadEventProc _ANSI_ARGS_((Tcl_Event *evPtr, int mask));
-static void	ThreadErrorProc _ANSI_ARGS_((Tcl_Interp *interp));
-static void	ThreadFreeProc _ANSI_ARGS_((ClientData clientData));
-static int	ThreadDeleteEvent _ANSI_ARGS_((Tcl_Event *eventPtr,
-	ClientData clientData));
-static void	ThreadExitProc _ANSI_ARGS_((ClientData clientData));
-
+Tcl_ThreadCreateType	NewTestThread(ClientData clientData);
+static void		ListRemove(ThreadSpecificData *tsdPtr);
+static void		ListUpdateInner(ThreadSpecificData *tsdPtr);
+static int		ThreadEventProc(Tcl_Event *evPtr, int mask);
+static void		ThreadErrorProc(Tcl_Interp *interp);
+static void		ThreadFreeProc(ClientData clientData);
+static int		ThreadDeleteEvent(Tcl_Event *eventPtr,
+			    ClientData clientData);
+static void		ThreadExitProc(ClientData clientData);
 
 /*
  *----------------------------------------------------------------------
@@ -152,15 +156,12 @@ static void	ThreadExitProc _ANSI_ARGS_((ClientData clientData));
  */
 
 int
-TclThread_Init(interp)
-    Tcl_Interp *interp; /* The current Tcl interpreter */
+TclThread_Init(
+    Tcl_Interp *interp)		/* The current Tcl interpreter */
 {
-    
-    Tcl_CreateObjCommand(interp,"testthread", Tcl_ThreadObjCmd, 
-	    (ClientData)NULL ,NULL);
-    if (Tcl_PkgProvide(interp, "Thread", "1.0" ) != TCL_OK) {
-	return TCL_ERROR;
-    }
+
+    Tcl_CreateObjCommand(interp, "testthread", Tcl_ThreadObjCmd,
+	    (ClientData) NULL, NULL);
     return TCL_OK;
 }
 
@@ -170,8 +171,8 @@ TclThread_Init(interp)
  *
  * Tcl_ThreadObjCmd --
  *
- *	This procedure is invoked to process the "testthread" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This procedure is invoked to process the "testthread" Tcl command. See
+ *	the user documentation for details on what it does.
  *
  *	thread create ?-joinable? ?script?
  *	thread send id ?-async? script
@@ -193,30 +194,33 @@ TclThread_Init(interp)
 
 	/* ARGSUSED */
 int
-Tcl_ThreadObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    Tcl_Interp *interp;			/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_ThreadObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     int option;
-    static CONST char *threadOptions[] = {"create", "exit", "id", "join", "names",
-				    "send", "wait", "errorproc",
-				    (char *) NULL};
-    enum options {THREAD_CREATE, THREAD_EXIT, THREAD_ID, THREAD_JOIN,
-		  THREAD_NAMES, THREAD_SEND, THREAD_WAIT, THREAD_ERRORPROC};
+    static const char *threadOptions[] = {
+	"create", "exit", "id", "join", "names",
+	"send", "wait", "errorproc", NULL
+    };
+    enum options {
+	THREAD_CREATE, THREAD_EXIT, THREAD_ID, THREAD_JOIN, THREAD_NAMES,
+	THREAD_SEND, THREAD_WAIT, THREAD_ERRORPROC
+    };
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "option ?args?");
 	return TCL_ERROR;
     }
-    if (Tcl_GetIndexFromObj(interp, objv[1], threadOptions,
-	    "option", 0, &option) != TCL_OK) {
+    if (Tcl_GetIndexFromObj(interp, objv[1], threadOptions, "option", 0,
+	    &option) != TCL_OK) {
 	return TCL_ERROR;
     }
 
-    /* 
+    /*
      * Make sure the initial thread is on the list before doing anything.
      */
 
@@ -229,158 +233,158 @@ Tcl_ThreadObjCmd(dummy, interp, objc, objv)
     }
 
     switch ((enum options)option) {
-	case THREAD_CREATE: {
-	    char *script;
-	    int   joinable, len;
-
-	    if (objc == 2) {
-	        /* Neither joinable nor special script
-		 */
+    case THREAD_CREATE: {
+	const char *script;
+	int joinable, len;
 
-	        joinable = 0;
-		script   = "testthread wait";	/* Just enter the event loop */
+	if (objc == 2) {
+	    /*
+	     * Neither joinable nor special script
+	     */
 
-	    } else if (objc == 3) {
-	        /* Possibly -joinable, then no special script,
-		 * no joinable, then its a script.
-		 */
+	    joinable = 0;
+	    script = "testthread wait";		/* Just enter event loop */
+	} else if (objc == 3) {
+	    /*
+	     * Possibly -joinable, then no special script, no joinable, then
+	     * its a script.
+	     */
 
-	        script = Tcl_GetString(objv[2]);
-		len    = strlen (script);
+	    script = Tcl_GetStringFromObj(objv[2], &len);
 
-		if ((len > 1) &&
+	    if ((len > 1) &&
 		    (script [0] == '-') && (script [1] == 'j') &&
 		    (0 == strncmp (script, "-joinable", (size_t) len))) {
-		    joinable = 1;
-		    script   = "testthread wait"; /* Just enter the event loop
-						   */
-		} else {
-		    /* Remember the script */
-		    joinable = 0;
-		}
-	    } else if (objc == 4) {
-	        /* Definitely a script available, but is the flag
-		 * -joinable ?
+		joinable = 1;
+		script = "testthread wait";	/* Just enter event loop */
+	    } else {
+		/*
+		 * Remember the script
 		 */
 
-	        script = Tcl_GetString(objv[2]);
-		len    = strlen (script);
+		joinable = 0;
+	    }
+	} else if (objc == 4) {
+	    /*
+	     * Definitely a script available, but is the flag -joinable?
+	     */
 
-		joinable = ((len > 1) &&
-			    (script [0] == '-') && (script [1] == 'j') &&
-			    (0 == strncmp (script, "-joinable", (size_t) len)));
+	    script = Tcl_GetStringFromObj(objv[2], &len);
 
-		script = Tcl_GetString(objv[3]);
-	    } else {
-		Tcl_WrongNumArgs(interp, 2, objv, "?-joinable? ?script?");
-		return TCL_ERROR;
-	    }
-	    return TclCreateThread(interp, script, joinable);
+	    joinable = ((len > 1) &&
+		    (script [0] == '-') && (script [1] == 'j') &&
+		    (0 == strncmp(script, "-joinable", (size_t) len)));
+
+	    script = Tcl_GetString(objv[3]);
+	} else {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?-joinable? ?script?");
+	    return TCL_ERROR;
 	}
-	case THREAD_EXIT: {
-	    if (objc > 2) {
-		Tcl_WrongNumArgs(interp, 1, objv, NULL);
-		return TCL_ERROR;
-	    }
-	    ListRemove(NULL);
-	    Tcl_ExitThread(0);
-	    return TCL_OK;
+	return TclCreateThread(interp, script, joinable);
+    }
+    case THREAD_EXIT:
+	if (objc > 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
 	}
-	case THREAD_ID:
-	    if (objc == 2) {
-		Tcl_Obj *idObj = Tcl_NewLongObj((long)Tcl_GetCurrentThread());
-		Tcl_SetObjResult(interp, idObj);
-		return TCL_OK;
-	    } else {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-        case THREAD_JOIN: {
-	    long id;
-	    int result, status;
+	ListRemove(NULL);
+	Tcl_ExitThread(0);
+	return TCL_OK;
+    case THREAD_ID:
+	if (objc == 2) {
+	    Tcl_Obj *idObj = Tcl_NewLongObj((long) Tcl_GetCurrentThread());
 
-	    if (objc != 3) {
-		Tcl_WrongNumArgs(interp, 1, objv, "join id");
-		return TCL_ERROR;
-	    }
-	    if (Tcl_GetLongFromObj(interp, objv[2], &id) != TCL_OK) {
-		return TCL_ERROR;
-	    }
+	    Tcl_SetObjResult(interp, idObj);
+	    return TCL_OK;
+	} else {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
+	}
+    case THREAD_JOIN: {
+	long id;
+	int result, status;
 
-	    result = Tcl_JoinThread ((Tcl_ThreadId) id, &status);
-	    if (result == TCL_OK) {
-	        Tcl_SetIntObj (Tcl_GetObjResult (interp), status);
-	    } else {
-	        char buf [20];
-		sprintf (buf, "%ld", id);
-		Tcl_AppendResult (interp, "cannot join thread ", buf, NULL);
-	    }
-	    return result;
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "id");
+	    return TCL_ERROR;
 	}
-	case THREAD_NAMES: {
-	    if (objc > 2) {
-		Tcl_WrongNumArgs(interp, 2, objv, NULL);
-		return TCL_ERROR;
-	    }
-	    return TclThreadList(interp);
+	if (Tcl_GetLongFromObj(interp, objv[2], &id) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	case THREAD_SEND: {
-	    long id;
-	    char *script;
-	    int wait, arg;
 
-	    if ((objc != 4) && (objc != 5)) {
-		Tcl_WrongNumArgs(interp, 1, objv, "send ?-async? id script");
-		return TCL_ERROR;
-	    }
-	    if (objc == 5) {
-		if (strcmp("-async", Tcl_GetString(objv[2])) != 0) {
-		    Tcl_WrongNumArgs(interp, 1, objv, "send ?-async? id script");
-		    return TCL_ERROR;
-		}
-		wait = 0;
-		arg = 3;
-	    } else {
-		wait = 1;
-		arg = 2;
-	    }
-	    if (Tcl_GetLongFromObj(interp, objv[arg], &id) != TCL_OK) {
+	result = Tcl_JoinThread ((Tcl_ThreadId) id, &status);
+	if (result == TCL_OK) {
+	    Tcl_SetIntObj (Tcl_GetObjResult (interp), status);
+	} else {
+	    char buf [20];
+
+	    sprintf(buf, "%ld", id);
+	    Tcl_AppendResult(interp, "cannot join thread ", buf, NULL);
+	}
+	return result;
+    }
+    case THREAD_NAMES:
+	if (objc > 2) {
+	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
+	    return TCL_ERROR;
+	}
+	return TclThreadList(interp);
+    case THREAD_SEND: {
+	long id;
+	const char *script;
+	int wait, arg;
+
+	if ((objc != 4) && (objc != 5)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?-async? id script");
+	    return TCL_ERROR;
+	}
+	if (objc == 5) {
+	    if (strcmp("-async", Tcl_GetString(objv[2])) != 0) {
+		Tcl_WrongNumArgs(interp, 2, objv, "?-async? id script");
 		return TCL_ERROR;
 	    }
-	    arg++;
-	    script = Tcl_GetString(objv[arg]);
-	    return TclThreadSend(interp, (Tcl_ThreadId) id, script, wait);
+	    wait = 0;
+	    arg = 3;
+	} else {
+	    wait = 1;
+	    arg = 2;
 	}
-	case THREAD_WAIT: {
-	    while (1) {
-		(void) Tcl_DoOneEvent(TCL_ALL_EVENTS);
-	    }
+	if (Tcl_GetLongFromObj(interp, objv[arg], &id) != TCL_OK) {
+	    return TCL_ERROR;
 	}
-	case THREAD_ERRORPROC: {
-	    /*
-	     * Arrange for this proc to handle thread death errors.
-	     */
+	arg++;
+	script = Tcl_GetString(objv[arg]);
+	return TclThreadSend(interp, (Tcl_ThreadId) id, script, wait);
+    }
+    case THREAD_ERRORPROC: {
+	/*
+	 * Arrange for this proc to handle thread death errors.
+	 */
 
-	    char *proc;
-	    if (objc != 3) {
-		Tcl_WrongNumArgs(interp, 1, objv, "errorproc proc");
-		return TCL_ERROR;
-	    }
-	    Tcl_MutexLock(&threadMutex);
-	    errorThreadId = Tcl_GetCurrentThread();
-	    if (errorProcString) {
-		ckfree(errorProcString);
-	    }
-	    proc = Tcl_GetString(objv[2]);
-	    errorProcString = ckalloc(strlen(proc)+1);
-	    strcpy(errorProcString, proc);
-	    Tcl_MutexUnlock(&threadMutex);
-	    return TCL_OK;
+	char *proc;
+
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "proc");
+	    return TCL_ERROR;
+	}
+	Tcl_MutexLock(&threadMutex);
+	errorThreadId = Tcl_GetCurrentThread();
+	if (errorProcString) {
+	    ckfree(errorProcString);
+	}
+	proc = Tcl_GetString(objv[2]);
+	errorProcString = ckalloc(strlen(proc)+1);
+	strcpy(errorProcString, proc);
+	Tcl_MutexUnlock(&threadMutex);
+	return TCL_OK;
+    }
+    case THREAD_WAIT:
+	while (1) {
+	    (void) Tcl_DoOneEvent(TCL_ALL_EVENTS);
 	}
     }
     return TCL_OK;
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -388,7 +392,7 @@ Tcl_ThreadObjCmd(dummy, interp, objc, objv)
  * TclCreateThread --
  *
  *	This procedure is invoked to create a thread containing an interp to
- *	run a script.  This returns after the thread has started executing.
+ *	run a script. This returns after the thread has started executing.
  *
  * Results:
  *	A standard Tcl result, which is the thread ID.
@@ -401,10 +405,10 @@ Tcl_ThreadObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-TclCreateThread(interp, script, joinable)
-    Tcl_Interp *interp;			/* Current interpreter. */
-    char *script;			/* Script to execute */
-    int         joinable;		/* Flag, joinable thread or not */
+TclCreateThread(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    const char *script,		/* Script to execute */
+    int joinable)		/* Flag, joinable thread or not */
 {
     ThreadCtrl ctrl;
     Tcl_ThreadId id;
@@ -417,9 +421,9 @@ TclCreateThread(interp, script, joinable)
 
     Tcl_MutexLock(&threadMutex);
     if (Tcl_CreateThread(&id, NewTestThread, (ClientData) &ctrl,
-		 TCL_THREAD_STACK_DEFAULT, joinable) != TCL_OK) {
+	    TCL_THREAD_STACK_DEFAULT, joinable) != TCL_OK) {
 	Tcl_MutexUnlock(&threadMutex);
-        Tcl_AppendResult(interp,"can't create a new thread",NULL);
+        Tcl_AppendResult(interp, "can't create a new thread", NULL);
 	return TCL_ERROR;
     }
 
@@ -439,32 +443,32 @@ TclCreateThread(interp, script, joinable)
  *
  * NewTestThread --
  *
- *    This routine is the "main()" for a new thread whose task is to
- *    execute a single TCL script.  The argument to this function is
- *    a pointer to a structure that contains the text of the TCL script
- *    to be executed.
- *
- *    Space to hold the script field of the ThreadControl structure passed 
- *    in as the only argument was obtained from malloc() and must be freed 
- *    by this function before it exits.  Space to hold the ThreadControl
- *    structure itself is released by the calling function, and the
- *    two condition variables in the ThreadControl structure are destroyed
- *    by the calling function.  The calling function will destroy the
- *    ThreadControl structure and the condition variable as soon as
- *    ctrlPtr->condWait is signaled, so this routine must make copies of
- *    any data it might need after that point.
+ *	This routine is the "main()" for a new thread whose task is to execute
+ *	a single Tcl script. The argument to this function is a pointer to a
+ *	structure that contains the text of the TCL script to be executed.
+ *
+ *	Space to hold the script field of the ThreadControl structure passed
+ *	in as the only argument was obtained from malloc() and must be freed
+ *	by this function before it exits. Space to hold the ThreadControl
+ *	structure itself is released by the calling function, and the two
+ *	condition variables in the ThreadControl structure are destroyed by
+ *	the calling function. The calling function will destroy the
+ *	ThreadControl structure and the condition variable as soon as
+ *	ctrlPtr->condWait is signaled, so this routine must make copies of any
+ *	data it might need after that point.
  *
  * Results:
- *    none
+ *	None
  *
  * Side effects:
- *    A TCL script is executed in a new thread.
+ *	A Tcl script is executed in a new thread.
  *
  *------------------------------------------------------------------------
  */
+
 Tcl_ThreadCreateType
-NewTestThread(clientData)
-    ClientData clientData;
+NewTestThread(
+    ClientData clientData)
 {
     ThreadCtrl *ctrlPtr = (ThreadCtrl*)clientData;
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -480,16 +484,25 @@ NewTestThread(clientData)
     result = TclThread_Init(tsdPtr->interp);
 
     /*
+     * This is part of the test facility. Initialize _ALL_ test commands for
+     * use by the new thread.
+     */
+
+    result = Tcltest_Init(tsdPtr->interp);
+
+    /*
      * Update the list of threads.
      */
 
     Tcl_MutexLock(&threadMutex);
     ListUpdateInner(tsdPtr);
+
     /*
-     * We need to keep a pointer to the alloc'ed mem of the script
-     * we are eval'ing, for the case that we exit during evaluation
+     * We need to keep a pointer to the alloc'ed mem of the script we are
+     * eval'ing, for the case that we exit during evaluation
      */
-    threadEvalScript = (char *) ckalloc(strlen(ctrlPtr->script)+1);
+
+    threadEvalScript = ckalloc(strlen(ctrlPtr->script)+1);
     strcpy(threadEvalScript, ctrlPtr->script);
 
     Tcl_CreateThreadExitHandler(ThreadExitProc, (ClientData) threadEvalScript);
@@ -528,22 +541,23 @@ NewTestThread(clientData)
  *
  * ThreadErrorProc --
  *
- *    Send a message to the thread willing to hear about errors.
+ *	Send a message to the thread willing to hear about errors.
  *
  * Results:
- *    none
+ *	None
  *
  * Side effects:
- *    Send an event.
+ *	Send an event.
  *
  *------------------------------------------------------------------------
  */
+
 static void
-ThreadErrorProc(interp)
-    Tcl_Interp *interp;		/* Interp that failed */
+ThreadErrorProc(
+    Tcl_Interp *interp)		/* Interp that failed */
 {
     Tcl_Channel errChannel;
-    CONST char *errorInfo, *argv[3];
+    const char *errorInfo, *argv[3];
     char *script;
     char buf[TCL_DOUBLE_SPACE+1];
     sprintf(buf, "%ld", (long) Tcl_GetCurrentThread());
@@ -572,20 +586,21 @@ ThreadErrorProc(interp)
  *
  * ListUpdateInner --
  *
- *    Add the thread local storage to the list.  This assumes
- *	the caller has obtained the mutex.
+ *	Add the thread local storage to the list. This assumes the caller has
+ *	obtained the mutex.
  *
  * Results:
- *    none
+ *	None
  *
  * Side effects:
- *    Add the thread local storage to its list.
+ *	Add the thread local storage to its list.
  *
  *------------------------------------------------------------------------
  */
+
 static void
-ListUpdateInner(tsdPtr)
-    ThreadSpecificData *tsdPtr;
+ListUpdateInner(
+    ThreadSpecificData *tsdPtr)
 {
     if (tsdPtr == NULL) {
 	tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -604,20 +619,21 @@ ListUpdateInner(tsdPtr)
  *
  * ListRemove --
  *
- *    Remove the thread local storage from its list.  This grabs the
- *	mutex to protect the list.
+ *	Remove the thread local storage from its list. This grabs the mutex to
+ *	protect the list.
  *
  * Results:
- *    none
+ *	None
  *
  * Side effects:
- *    Remove the thread local storage from its list.
+ *	Remove the thread local storage from its list.
  *
  *------------------------------------------------------------------------
  */
+
 static void
-ListRemove(tsdPtr)
-    ThreadSpecificData *tsdPtr;
+ListRemove(
+    ThreadSpecificData *tsdPtr)
 {
     if (tsdPtr == NULL) {
 	tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -634,7 +650,6 @@ ListRemove(tsdPtr)
     tsdPtr->nextPtr = tsdPtr->prevPtr = 0;
     Tcl_MutexUnlock(&threadMutex);
 }
-
 
 /*
  *------------------------------------------------------------------------
@@ -652,8 +667,8 @@ ListRemove(tsdPtr)
  *------------------------------------------------------------------------
  */
 int
-TclThreadList(interp)
-    Tcl_Interp *interp;
+TclThreadList(
+    Tcl_Interp *interp)
 {
     ThreadSpecificData *tsdPtr;
     Tcl_Obj *listPtr;
@@ -662,13 +677,12 @@ TclThreadList(interp)
     Tcl_MutexLock(&threadMutex);
     for (tsdPtr = threadList ; tsdPtr ; tsdPtr = tsdPtr->nextPtr) {
 	Tcl_ListObjAppendElement(interp, listPtr,
-		Tcl_NewLongObj((long)tsdPtr->threadId));
+		Tcl_NewLongObj((long) tsdPtr->threadId));
     }
     Tcl_MutexUnlock(&threadMutex);
     Tcl_SetObjResult(interp, listPtr);
     return TCL_OK;
 }
-
 
 /*
  *------------------------------------------------------------------------
@@ -685,12 +699,13 @@ TclThreadList(interp)
  *
  *------------------------------------------------------------------------
  */
+
 int
-TclThreadSend(interp, id, script, wait)
-    Tcl_Interp *interp;		/* The current interpreter. */
-    Tcl_ThreadId id;		/* Thread Id of other interpreter. */
-    char *script;		/* The script to evaluate. */
-    int wait;			/* If 1, we block for the result. */
+TclThreadSend(
+    Tcl_Interp *interp,		/* The current interpreter. */
+    Tcl_ThreadId id,		/* Thread Id of other interpreter. */
+    const char *script,		/* The script to evaluate. */
+    int wait)			/* If 1, we block for the result. */
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     ThreadEvent *threadEventPtr;
@@ -698,7 +713,7 @@ TclThreadSend(interp, id, script, wait)
     int found, code;
     Tcl_ThreadId threadId = (Tcl_ThreadId) id;
 
-    /* 
+    /*
      * Verify the thread exists.
      */
 
@@ -717,8 +732,8 @@ TclThreadSend(interp, id, script, wait)
     }
 
     /*
-     * Short circut sends to ourself.  Ought to do something with -async,
-     * like run in an idle handler.
+     * Short circut sends to ourself. Ought to do something with -async, like
+     * run in an idle handler.
      */
 
     if (threadId == Tcl_GetCurrentThread()) {
@@ -726,7 +741,7 @@ TclThreadSend(interp, id, script, wait)
 	return Tcl_GlobalEval(interp, script);
     }
 
-    /* 
+    /*
      * Create the event for its event queue.
      */
 
@@ -749,7 +764,7 @@ TclThreadSend(interp, id, script, wait)
 	resultPtr->errorInfo = NULL;
 	resultPtr->errorCode = NULL;
 
-	/* 
+	/*
 	 * Maintain the cleanup list.
 	 */
 
@@ -769,7 +784,7 @@ TclThreadSend(interp, id, script, wait)
      */
 
     threadEventPtr->event.proc = ThreadEventProc;
-    Tcl_ThreadQueueEvent(threadId, (Tcl_Event *)threadEventPtr, 
+    Tcl_ThreadQueueEvent(threadId, (Tcl_Event *)threadEventPtr,
 	    TCL_QUEUE_TAIL);
     Tcl_ThreadAlert(threadId);
 
@@ -778,7 +793,7 @@ TclThreadSend(interp, id, script, wait)
 	return TCL_OK;
     }
 
-    /* 
+    /*
      * Block on the results and then get them.
      */
 
@@ -823,7 +838,6 @@ TclThreadSend(interp, id, script, wait)
 
     return code;
 }
-
 
 /*
  *------------------------------------------------------------------------
@@ -840,17 +854,18 @@ TclThreadSend(interp, id, script, wait)
  *
  *------------------------------------------------------------------------
  */
+
 static int
-ThreadEventProc(evPtr, mask)
-    Tcl_Event *evPtr;		/* Really ThreadEvent */
-    int mask;
+ThreadEventProc(
+    Tcl_Event *evPtr,		/* Really ThreadEvent */
+    int mask)
 {
     ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
     ThreadEvent *threadEventPtr = (ThreadEvent *)evPtr;
     ThreadEventResult *resultPtr = threadEventPtr->resultPtr;
     Tcl_Interp *interp = tsdPtr->interp;
     int code;
-    CONST char *result, *errorCode, *errorInfo;
+    const char *result, *errorCode, *errorInfo;
 
     if (interp == NULL) {
 	code = TCL_ERROR;
@@ -912,10 +927,11 @@ ThreadEventProc(evPtr, mask)
  *
  *------------------------------------------------------------------------
  */
+
      /* ARGSUSED */
 static void
-ThreadFreeProc(clientData)
-    ClientData clientData;
+ThreadFreeProc(
+    ClientData clientData)
 {
     if (clientData) {
 	ckfree((char *) clientData);
@@ -938,20 +954,23 @@ ThreadFreeProc(clientData)
  *
  *------------------------------------------------------------------------
  */
+
      /* ARGSUSED */
 static int
-ThreadDeleteEvent(eventPtr, clientData)
-    Tcl_Event *eventPtr;		/* Really ThreadEvent */
-    ClientData clientData;		/* dummy */
+ThreadDeleteEvent(
+    Tcl_Event *eventPtr,	/* Really ThreadEvent */
+    ClientData clientData)	/* dummy */
 {
     if (eventPtr->proc == ThreadEventProc) {
 	ckfree((char *) ((ThreadEvent *) eventPtr)->script);
 	return 1;
     }
+
     /*
-     * If it was NULL, we were in the middle of servicing the event
-     * and it should be removed
+     * If it was NULL, we were in the middle of servicing the event and it
+     * should be removed
      */
+
     return (eventPtr->proc == NULL);
 }
 
@@ -960,21 +979,22 @@ ThreadDeleteEvent(eventPtr, clientData)
  *
  * ThreadExitProc --
  *
- *    This is called when the thread exits.  
+ *    This is called when the thread exits.
  *
  * Results:
  *    None.
  *
  * Side effects:
- *	It unblocks anyone that is waiting on a send to this thread.
- *	It cleans up any events in the event queue for this thread.
+ *	It unblocks anyone that is waiting on a send to this thread. It cleans
+ *	up any events in the event queue for this thread.
  *
  *------------------------------------------------------------------------
  */
+
      /* ARGSUSED */
 static void
-ThreadExitProc(clientData)
-    ClientData clientData;
+ThreadExitProc(
+    ClientData clientData)
 {
     char *threadEvalScript = (char *) clientData;
     ThreadEventResult *resultPtr, *nextPtr;
@@ -992,9 +1012,10 @@ ThreadExitProc(clientData)
 	nextPtr = resultPtr->nextPtr;
 	if (resultPtr->srcThreadId == self) {
 	    /*
-	     * We are going away.  By freeing up the result we signal
-	     * to the other thread we don't care about the result.
+	     * We are going away. By freeing up the result we signal to the
+	     * other thread we don't care about the result.
 	     */
+
 	    if (resultPtr->prevPtr) {
 		resultPtr->prevPtr->nextPtr = resultPtr->nextPtr;
 	    } else {
@@ -1005,15 +1026,16 @@ ThreadExitProc(clientData)
 	    }
 	    resultPtr->nextPtr = resultPtr->prevPtr = 0;
 	    resultPtr->eventPtr->resultPtr = NULL;
-	    ckfree((char *)resultPtr);
+	    ckfree((char *) resultPtr);
 	} else if (resultPtr->dstThreadId == self) {
 	    /*
-	     * Dang.  The target is going away.  Unblock the caller.
-	     * The result string must be dynamically allocated because
-	     * the main thread is going to call free on it.
+	     * Dang. The target is going away. Unblock the caller. The result
+	     * string must be dynamically allocated because the main thread is
+	     * going to call free on it.
 	     */
 
-	    char *msg = "target thread died";
+	    const char *msg = "target thread died";
+
 	    resultPtr->result = ckalloc(strlen(msg)+1);
 	    strcpy(resultPtr->result, msg);
 	    resultPtr->code = TCL_ERROR;
@@ -1022,5 +1044,12 @@ ThreadExitProc(clientData)
     }
     Tcl_MutexUnlock(&threadMutex);
 }
-
 #endif /* TCL_THREADS */
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclTimer.c b/generic/tclTimer.c
index d472b17..33838ec 100644
--- a/generic/tclTimer.c
+++ b/generic/tclTimer.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * tclTimer.c --
  *
  *	This file provides timer event management facilities for Tcl,
@@ -6,75 +6,73 @@
  *
  * Copyright (c) 1997 by Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
 /*
  * For each timer callback that's pending there is one record of the following
- * type.  The normal handlers (created by Tcl_CreateTimerHandler) are chained
+ * type. The normal handlers (created by Tcl_CreateTimerHandler) are chained
  * together in a list sorted by time (earliest event first).
  */
 
 typedef struct TimerHandler {
-    Tcl_Time time;			/* When timer is to fire. */
-    Tcl_TimerProc *proc;		/* Procedure to call. */
-    ClientData clientData;		/* Argument to pass to proc. */
-    Tcl_TimerToken token;		/* Identifies handler so it can be
-					 * deleted. */
-    struct TimerHandler *nextPtr;	/* Next event in queue, or NULL for
-					 * end of queue. */
+    Tcl_Time time;		/* When timer is to fire. */
+    Tcl_TimerProc *proc;	/* Function to call. */
+    ClientData clientData;	/* Argument to pass to proc. */
+    Tcl_TimerToken token;	/* Identifies handler so it can be deleted. */
+    struct TimerHandler *nextPtr;
+				/* Next event in queue, or NULL for end of
+				 * queue. */
 } TimerHandler;
 
 /*
- * The data structure below is used by the "after" command to remember
- * the command to be executed later.  All of the pending "after" commands
- * for an interpreter are linked together in a list.
+ * The data structure below is used by the "after" command to remember the
+ * command to be executed later. All of the pending "after" commands for an
+ * interpreter are linked together in a list.
  */
 
 typedef struct AfterInfo {
     struct AfterAssocData *assocPtr;
-				/* Pointer to the "tclAfter" assocData for
-				 * the interp in which command will be
+				/* Pointer to the "tclAfter" assocData for the
+				 * interp in which command will be
 				 * executed. */
     Tcl_Obj *commandPtr;	/* Command to execute. */
-    int id;			/* Integer identifier for command;  used to
+    int id;			/* Integer identifier for command; used to
 				 * cancel it. */
-    Tcl_TimerToken token;	/* Used to cancel the "after" command.  NULL
-				 * means that the command is run as an
-				 * idle handler rather than as a timer
-				 * handler.  NULL means this is an "after
-				 * idle" handler rather than a
-                                 * timer handler. */
+    Tcl_TimerToken token;	/* Used to cancel the "after" command. NULL
+				 * means that the command is run as an idle
+				 * handler rather than as a timer handler.
+				 * NULL means this is an "after idle" handler
+				 * rather than a timer handler. */
     struct AfterInfo *nextPtr;	/* Next in list of all "after" commands for
 				 * this interpreter. */
 } AfterInfo;
 
 /*
- * One of the following structures is associated with each interpreter
- * for which an "after" command has ever been invoked.  A pointer to
- * this structure is stored in the AssocData for the "tclAfter" key.
+ * One of the following structures is associated with each interpreter for
+ * which an "after" command has ever been invoked. A pointer to this structure
+ * is stored in the AssocData for the "tclAfter" key.
  */
 
 typedef struct AfterAssocData {
     Tcl_Interp *interp;		/* The interpreter for which this data is
 				 * registered. */
-    AfterInfo *firstAfterPtr;	/* First in list of all "after" commands
-				 * still pending for this interpreter, or
-				 * NULL if none. */
+    AfterInfo *firstAfterPtr;	/* First in list of all "after" commands still
+				 * pending for this interpreter, or NULL if
+				 * none. */
 } AfterAssocData;
 
 /*
- * There is one of the following structures for each of the
- * handlers declared in a call to Tcl_DoWhenIdle.  All of the
- * currently-active handlers are linked together into a list.
+ * There is one of the following structures for each of the handlers declared
+ * in a call to Tcl_DoWhenIdle. All of the currently-active handlers are
+ * linked together into a list.
  */
 
 typedef struct IdleHandler {
-    Tcl_IdleProc (*proc);	/* Procedure to call. */
+    Tcl_IdleProc (*proc);	/* Function to call. */
     ClientData clientData;	/* Value to pass to proc. */
     int generation;		/* Used to distinguish older handlers from
 				 * recently-created ones. */
@@ -82,53 +80,69 @@ typedef struct IdleHandler {
 } IdleHandler;
 
 /*
- * The timer and idle queues are per-thread because they are associated
- * with the notifier, which is also per-thread.
+ * The timer and idle queues are per-thread because they are associated with
+ * the notifier, which is also per-thread.
  *
- * All static variables used in this file are collected into a single
- * instance of the following structure.  For multi-threaded implementations,
- * there is one instance of this structure for each thread.
+ * All static variables used in this file are collected into a single instance
+ * of the following structure. For multi-threaded implementations, there is
+ * one instance of this structure for each thread.
  *
- * Notice that different structures with the same name appear in other
- * files.  The structure defined below is used in this file only.
+ * Notice that different structures with the same name appear in other files.
+ * The structure defined below is used in this file only.
  */
 
 typedef struct ThreadSpecificData {
     TimerHandler *firstTimerHandlerPtr;	/* First event in queue. */
-    int lastTimerId;		/* Timer identifier of most recently
-				 * created timer. */
+    int lastTimerId;		/* Timer identifier of most recently created
+				 * timer. */
     int timerPending;		/* 1 if a timer event is in the queue. */
     IdleHandler *idleList;	/* First in list of all idle handlers. */
     IdleHandler *lastIdlePtr;	/* Last in list (or NULL for empty list). */
-    int idleGeneration;		/* Used to fill in the "generation" fields
-				 * of IdleHandler structures.  Increments
-				 * each time Tcl_DoOneEvent starts calling
-				 * idle handlers, so that all old handlers
-				 * can be called without calling any of the
-				 * new ones created by old ones. */
+    int idleGeneration;		/* Used to fill in the "generation" fields of
+				 * IdleHandler structures. Increments each
+				 * time Tcl_DoOneEvent starts calling idle
+				 * handlers, so that all old handlers can be
+				 * called without calling any of the new ones
+				 * created by old ones. */
     int afterId;		/* For unique identifiers of after events. */
 } ThreadSpecificData;
 
 static Tcl_ThreadDataKey dataKey;
 
 /*
- * Prototypes for procedures referenced only in this file:
+ * Helper macros for working with times. TCL_TIME_BEFORE encodes how to write
+ * the ordering relation on (normalized) times, and TCL_TIME_DIFF_MS computes
+ * the number of milliseconds difference between two times. Both macros use
+ * both of their arguments multiple times, so make sure they are cheap and
+ * side-effect free. The "prototypes" for these macros are:
+ *
+ * static int	TCL_TIME_BEFORE(Tcl_Time t1, Tcl_Time t2);
+ * static long	TCL_TIME_DIFF_MS(Tcl_Time t1, Tcl_Time t2);
+ */
+
+#define TCL_TIME_BEFORE(t1, t2) \
+    (((t1).sec<(t2).sec) || ((t1).sec==(t2).sec && (t1).usec<(t2).usec))
+
+#define TCL_TIME_DIFF_MS(t1, t2) \
+    (1000*((Tcl_WideInt)(t1).sec - (Tcl_WideInt)(t2).sec) + \
+	    ((long)(t1).usec - (long)(t2).usec)/1000)
+
+/*
+ * Prototypes for functions referenced only in this file:
  */
 
-static void		AfterCleanupProc _ANSI_ARGS_((ClientData clientData,
-			    Tcl_Interp *interp));
-static void		AfterProc _ANSI_ARGS_((ClientData clientData));
-static void		FreeAfterPtr _ANSI_ARGS_((AfterInfo *afterPtr));
-static AfterInfo *	GetAfterEvent _ANSI_ARGS_((AfterAssocData *assocPtr,
-			    Tcl_Obj *commandPtr));
-static ThreadSpecificData *InitTimer _ANSI_ARGS_((void));
-static void		TimerExitProc _ANSI_ARGS_((ClientData clientData));
-static int		TimerHandlerEventProc _ANSI_ARGS_((Tcl_Event *evPtr,
-			    int flags));
-static void		TimerCheckProc _ANSI_ARGS_((ClientData clientData,
-			    int flags));
-static void		TimerSetupProc _ANSI_ARGS_((ClientData clientData,
-			    int flags));
+static void		AfterCleanupProc(ClientData clientData,
+			    Tcl_Interp *interp);
+static int		AfterDelay(Tcl_Interp *interp, Tcl_WideInt ms);
+static void		AfterProc(ClientData clientData);
+static void		FreeAfterPtr(AfterInfo *afterPtr);
+static AfterInfo *	GetAfterEvent(AfterAssocData *assocPtr,
+			    Tcl_Obj *commandPtr);
+static ThreadSpecificData *InitTimer(void);
+static void		TimerExitProc(ClientData clientData);
+static int		TimerHandlerEventProc(Tcl_Event *evPtr, int flags);
+static void		TimerCheckProc(ClientData clientData, int flags);
+static void		TimerSetupProc(ClientData clientData, int flags);
 
 /*
  *----------------------------------------------------------------------
@@ -147,10 +161,10 @@ static void		TimerSetupProc _ANSI_ARGS_((ClientData clientData,
  */
 
 static ThreadSpecificData *
-InitTimer()
+InitTimer(void)
 {
-    ThreadSpecificData *tsdPtr = 
-	(ThreadSpecificData *) TclThreadDataKeyGet(&dataKey);
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+	    TclThreadDataKeyGet(&dataKey);
 
     if (tsdPtr == NULL) {
 	tsdPtr = TCL_TSD_INIT(&dataKey);
@@ -165,8 +179,8 @@ InitTimer()
  *
  * TimerExitProc --
  *
- *	This function is call at exit or unload time to remove the
- *	timer and idle event sources.
+ *	This function is call at exit or unload time to remove the timer and
+ *	idle event sources.
  *
  * Results:
  *	None.
@@ -178,15 +192,16 @@ InitTimer()
  */
 
 static void
-TimerExitProc(clientData)
-    ClientData clientData;	/* Not used. */
+TimerExitProc(
+    ClientData clientData)	/* Not used. */
 {
-    ThreadSpecificData *tsdPtr =
-	(ThreadSpecificData *) TclThreadDataKeyGet(&dataKey);
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+	    TclThreadDataKeyGet(&dataKey);
 
     Tcl_DeleteEventSource(TimerSetupProc, TimerCheckProc, NULL);
     if (tsdPtr != NULL) {
 	register TimerHandler *timerHandlerPtr;
+
 	timerHandlerPtr = tsdPtr->firstTimerHandlerPtr;
 	while (timerHandlerPtr != NULL) {
 	    tsdPtr->firstTimerHandlerPtr = timerHandlerPtr->nextPtr;
@@ -201,55 +216,82 @@ TimerExitProc(clientData)
  *
  * Tcl_CreateTimerHandler --
  *
- *	Arrange for a given procedure to be invoked at a particular
- *	time in the future.
+ *	Arrange for a given function to be invoked at a particular time in the
+ *	future.
  *
  * Results:
- *	The return value is a token for the timer event, which
- *	may be used to delete the event before it fires.
+ *	The return value is a token for the timer event, which may be used to
+ *	delete the event before it fires.
  *
  * Side effects:
- *	When milliseconds have elapsed, proc will be invoked
- *	exactly once.
+ *	When milliseconds have elapsed, proc will be invoked exactly once.
  *
  *--------------------------------------------------------------
  */
 
 Tcl_TimerToken
-Tcl_CreateTimerHandler(milliseconds, proc, clientData)
-    int milliseconds;		/* How many milliseconds to wait
-				 * before invoking proc. */
-    Tcl_TimerProc *proc;	/* Procedure to invoke. */
-    ClientData clientData;	/* Arbitrary data to pass to proc. */
+Tcl_CreateTimerHandler(
+    int milliseconds,		/* How many milliseconds to wait before
+				 * invoking proc. */
+    Tcl_TimerProc *proc,	/* Function to invoke. */
+    ClientData clientData)	/* Arbitrary data to pass to proc. */
 {
-    register TimerHandler *timerHandlerPtr, *tPtr2, *prevPtr;
     Tcl_Time time;
-    ThreadSpecificData *tsdPtr;
-
-    tsdPtr = InitTimer();
-
-    timerHandlerPtr = (TimerHandler *) ckalloc(sizeof(TimerHandler));
 
     /*
      * Compute when the event should fire.
      */
 
     Tcl_GetTime(&time);
-    timerHandlerPtr->time.sec = time.sec + milliseconds/1000;
-    timerHandlerPtr->time.usec = time.usec + (milliseconds%1000)*1000;
-    if (timerHandlerPtr->time.usec >= 1000000) {
-	timerHandlerPtr->time.usec -= 1000000;
-	timerHandlerPtr->time.sec += 1;
+    time.sec += milliseconds/1000;
+    time.usec += (milliseconds%1000)*1000;
+    if (time.usec >= 1000000) {
+	time.usec -= 1000000;
+	time.sec += 1;
     }
+    return TclCreateAbsoluteTimerHandler(&time, proc, clientData);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * TclCreateAbsoluteTimerHandler --
+ *
+ *	Arrange for a given function to be invoked at a particular time in the
+ *	future.
+ *
+ * Results:
+ *	The return value is a token for the timer event, which may be used to
+ *	delete the event before it fires.
+ *
+ * Side effects:
+ *	When the time in timePtr has been reached, proc will be invoked
+ *	exactly once.
+ *
+ *--------------------------------------------------------------
+ */
+
+Tcl_TimerToken
+TclCreateAbsoluteTimerHandler(
+    Tcl_Time *timePtr,
+    Tcl_TimerProc *proc,
+    ClientData clientData)
+{
+    register TimerHandler *timerHandlerPtr, *tPtr2, *prevPtr;
+    ThreadSpecificData *tsdPtr;
+
+    tsdPtr = InitTimer();
+    timerHandlerPtr = (TimerHandler *) ckalloc(sizeof(TimerHandler));
 
     /*
-     * Fill in other fields for the event.
+     * Fill in fields for the event.
      */
 
+    memcpy((void *)&timerHandlerPtr->time, (void *)timePtr, sizeof(Tcl_Time));
     timerHandlerPtr->proc = proc;
     timerHandlerPtr->clientData = clientData;
     tsdPtr->lastTimerId++;
-    timerHandlerPtr->token = (Tcl_TimerToken) tsdPtr->lastTimerId;
+    timerHandlerPtr->token = (Tcl_TimerToken) INT2PTR(tsdPtr->lastTimerId);
 
     /*
      * Add the event to the queue in the correct position
@@ -258,9 +300,7 @@ Tcl_CreateTimerHandler(milliseconds, proc, clientData)
 
     for (tPtr2 = tsdPtr->firstTimerHandlerPtr, prevPtr = NULL; tPtr2 != NULL;
 	    prevPtr = tPtr2, tPtr2 = tPtr2->nextPtr) {
-	if ((tPtr2->time.sec > timerHandlerPtr->time.sec)
-		|| ((tPtr2->time.sec == timerHandlerPtr->time.sec)
-		&& (tPtr2->time.usec > timerHandlerPtr->time.usec))) {
+	if (TCL_TIME_BEFORE(timerHandlerPtr->time, tPtr2->time)) {
 	    break;
 	}
     }
@@ -287,17 +327,16 @@ Tcl_CreateTimerHandler(milliseconds, proc, clientData)
  *	None.
  *
  * Side effects:
- *	Destroy the timer callback identified by TimerToken,
- *	so that its associated procedure will not be called.
- *	If the callback has already fired, or if the given
- *	token doesn't exist, then nothing happens.
+ *	Destroy the timer callback identified by TimerToken, so that its
+ *	associated function will not be called. If the callback has already
+ *	fired, or if the given token doesn't exist, then nothing happens.
  *
  *--------------------------------------------------------------
  */
 
 void
-Tcl_DeleteTimerHandler(token)
-    Tcl_TimerToken token;	/* Result previously returned by
+Tcl_DeleteTimerHandler(
+    Tcl_TimerToken token)	/* Result previously returned by
 				 * Tcl_DeleteTimerHandler. */
 {
     register TimerHandler *timerHandlerPtr, *prevPtr;
@@ -328,9 +367,9 @@ Tcl_DeleteTimerHandler(token)
  *
  * TimerSetupProc --
  *
- *	This function is called by Tcl_DoOneEvent to setup the timer
- *	event source for before blocking.  This routine checks both the
- *	idle and after timer lists.
+ *	This function is called by Tcl_DoOneEvent to setup the timer event
+ *	source for before blocking. This routine checks both the idle and
+ *	after timer lists.
  *
  * Results:
  *	None.
@@ -342,9 +381,9 @@ Tcl_DeleteTimerHandler(token)
  */
 
 static void
-TimerSetupProc(data, flags)
-    ClientData data;		/* Not used. */
-    int flags;			/* Event flags as passed to Tcl_DoOneEvent. */
+TimerSetupProc(
+    ClientData data,		/* Not used. */
+    int flags)			/* Event flags as passed to Tcl_DoOneEvent. */
 {
     Tcl_Time blockTime;
     ThreadSpecificData *tsdPtr = InitTimer();
@@ -378,7 +417,7 @@ TimerSetupProc(data, flags)
     } else {
 	return;
     }
-	
+
     Tcl_SetMaxBlockTime(&blockTime);
 }
 
@@ -387,9 +426,9 @@ TimerSetupProc(data, flags)
  *
  * TimerCheckProc --
  *
- *	This function is called by Tcl_DoOneEvent to check the timer
- *	event source for events.  This routine checks both the
- *	idle and after timer lists.
+ *	This function is called by Tcl_DoOneEvent to check the timer event
+ *	source for events. This routine checks both the idle and after timer
+ *	lists.
  *
  * Results:
  *	None.
@@ -401,9 +440,9 @@ TimerSetupProc(data, flags)
  */
 
 static void
-TimerCheckProc(data, flags)
-    ClientData data;		/* Not used. */
-    int flags;			/* Event flags as passed to Tcl_DoOneEvent. */
+TimerCheckProc(
+    ClientData data,		/* Not used. */
+    int flags)			/* Event flags as passed to Tcl_DoOneEvent. */
 {
     Tcl_Event *timerEvPtr;
     Tcl_Time blockTime;
@@ -446,28 +485,27 @@ TimerCheckProc(data, flags)
  *
  * TimerHandlerEventProc --
  *
- *	This procedure is called by Tcl_ServiceEvent when a timer event
- *	reaches the front of the event queue.  This procedure handles
- *	the event by invoking the callbacks for all timers that are
- *	ready.
+ *	This function is called by Tcl_ServiceEvent when a timer event reaches
+ *	the front of the event queue. This function handles the event by
+ *	invoking the callbacks for all timers that are ready.
  *
  * Results:
- *	Returns 1 if the event was handled, meaning it should be removed
- *	from the queue.  Returns 0 if the event was not handled, meaning
- *	it should stay on the queue.  The only time the event isn't
- *	handled is if the TCL_TIMER_EVENTS flag bit isn't set.
+ *	Returns 1 if the event was handled, meaning it should be removed from
+ *	the queue. Returns 0 if the event was not handled, meaning it should
+ *	stay on the queue. The only time the event isn't handled is if the
+ *	TCL_TIMER_EVENTS flag bit isn't set.
  *
  * Side effects:
- *	Whatever the timer handler callback procedures do.
+ *	Whatever the timer handler callback functions do.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-TimerHandlerEventProc(evPtr, flags)
-    Tcl_Event *evPtr;		/* Event to service. */
-    int flags;			/* Flags that indicate what events to
-				 * handle, such as TCL_FILE_EVENTS. */
+TimerHandlerEventProc(
+    Tcl_Event *evPtr,		/* Event to service. */
+    int flags)			/* Flags that indicate what events to handle,
+				 * such as TCL_FILE_EVENTS. */
 {
     TimerHandler *timerHandlerPtr, **nextPtrPtr;
     Tcl_Time time;
@@ -475,9 +513,9 @@ TimerHandlerEventProc(evPtr, flags)
     ThreadSpecificData *tsdPtr = InitTimer();
 
     /*
-     * Do nothing if timers aren't enabled.  This leaves the event on the
-     * queue, so we will get to it as soon as ServiceEvents() is called
-     * with timers enabled.
+     * Do nothing if timers aren't enabled. This leaves the event on the
+     * queue, so we will get to it as soon as ServiceEvents() is called with
+     * timers enabled.
      */
 
     if (!(flags & TCL_TIMER_EVENTS)) {
@@ -485,30 +523,28 @@ TimerHandlerEventProc(evPtr, flags)
     }
 
     /*
-     * The code below is trickier than it may look, for the following
-     * reasons:
+     * The code below is trickier than it may look, for the following reasons:
      *
-     * 1. New handlers can get added to the list while the current
-     *    one is being processed.  If new ones get added, we don't
-     *    want to process them during this pass through the list to avoid
-     *	  starving other event sources.  This is implemented using the
-     *	  token number in the handler:  new handlers will have a
-     *    newer token than any of the ones currently on the list.
-     * 2. The handler can call Tcl_DoOneEvent, so we have to remove
-     *    the handler from the list before calling it. Otherwise an
-     *    infinite loop could result.
-     * 3. Tcl_DeleteTimerHandler can be called to remove an element from
-     *    the list while a handler is executing, so the list could
-     *    change structure during the call.
-     * 4. Because we only fetch the current time before entering the loop,
-     *    the only way a new timer will even be considered runnable is if
-     *	  its expiration time is within the same millisecond as the
-     *	  current time.  This is fairly likely on Windows, since it has
-     *	  a course granularity clock.  Since timers are placed
-     *	  on the queue in time order with the most recently created
-     *    handler appearing after earlier ones with the same expiration
-     *	  time, we don't have to worry about newer generation timers
-     *	  appearing before later ones.
+     * 1. New handlers can get added to the list while the current one is
+     *	  being processed. If new ones get added, we don't want to process
+     *	  them during this pass through the list to avoid starving other event
+     *	  sources. This is implemented using the token number in the handler:
+     *	  new handlers will have a newer token than any of the ones currently
+     *	  on the list.
+     * 2. The handler can call Tcl_DoOneEvent, so we have to remove the
+     *	  handler from the list before calling it. Otherwise an infinite loop
+     *	  could result.
+     * 3. Tcl_DeleteTimerHandler can be called to remove an element from the
+     *	  list while a handler is executing, so the list could change
+     *	  structure during the call.
+     * 4. Because we only fetch the current time before entering the loop, the
+     *	  only way a new timer will even be considered runnable is if its
+     *	  expiration time is within the same millisecond as the current time.
+     *	  This is fairly likely on Windows, since it has a course granularity
+     *	  clock. Since timers are placed on the queue in time order with the
+     *	  most recently created handler appearing after earlier ones with the
+     *	  same expiration time, we don't have to worry about newer generation
+     *	  timers appearing before later ones.
      */
 
     tsdPtr->timerPending = 0;
@@ -520,10 +556,8 @@ TimerHandlerEventProc(evPtr, flags)
 	if (timerHandlerPtr == NULL) {
 	    break;
 	}
-	    
-	if ((timerHandlerPtr->time.sec > time.sec)
-		|| ((timerHandlerPtr->time.sec == time.sec)
-			&& (timerHandlerPtr->time.usec > time.usec))) {
+
+	if (TCL_TIME_BEFORE(time, timerHandlerPtr->time)) {
 	    break;
 	}
 
@@ -531,13 +565,13 @@ TimerHandlerEventProc(evPtr, flags)
 	 * Bail out if the next timer is of a newer generation.
 	 */
 
-	if ((currentTimerId - (int)timerHandlerPtr->token) < 0) {
+	if ((currentTimerId - PTR2INT(timerHandlerPtr->token)) < 0) {
 	    break;
 	}
 
 	/*
-	 * Remove the handler from the queue before invoking it,
-	 * to avoid potential reentrancy problems.
+	 * Remove the handler from the queue before invoking it, to avoid
+	 * potential reentrancy problems.
 	 */
 
 	(*nextPtrPtr) = timerHandlerPtr->nextPtr;
@@ -553,24 +587,24 @@ TimerHandlerEventProc(evPtr, flags)
  *
  * Tcl_DoWhenIdle --
  *
- *	Arrange for proc to be invoked the next time the system is
- *	idle (i.e., just before the next time that Tcl_DoOneEvent
- *	would have to wait for something to happen).
+ *	Arrange for proc to be invoked the next time the system is idle (i.e.,
+ *	just before the next time that Tcl_DoOneEvent would have to wait for
+ *	something to happen).
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Proc will eventually be called, with clientData as argument.
- *	See the manual entry for details.
+ *	Proc will eventually be called, with clientData as argument. See the
+ *	manual entry for details.
  *
  *--------------------------------------------------------------
  */
 
 void
-Tcl_DoWhenIdle(proc, clientData)
-    Tcl_IdleProc *proc;		/* Procedure to invoke. */
-    ClientData clientData;	/* Arbitrary value to pass to proc. */
+Tcl_DoWhenIdle(
+    Tcl_IdleProc *proc,		/* Function to invoke. */
+    ClientData clientData)	/* Arbitrary value to pass to proc. */
 {
     register IdleHandler *idlePtr;
     Tcl_Time blockTime;
@@ -598,23 +632,23 @@ Tcl_DoWhenIdle(proc, clientData)
  *
  * Tcl_CancelIdleCall --
  *
- *	If there are any when-idle calls requested to a given procedure
- *	with given clientData, cancel all of them.
+ *	If there are any when-idle calls requested to a given function with
+ *	given clientData, cancel all of them.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If the proc/clientData combination were on the when-idle list,
- *	they are removed so that they will never be called.
+ *	If the proc/clientData combination were on the when-idle list, they
+ *	are removed so that they will never be called.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_CancelIdleCall(proc, clientData)
-    Tcl_IdleProc *proc;		/* Procedure that was previously registered. */
-    ClientData clientData;	/* Arbitrary value to pass to proc. */
+Tcl_CancelIdleCall(
+    Tcl_IdleProc *proc,		/* Function that was previously registered. */
+    ClientData clientData)	/* Arbitrary value to pass to proc. */
 {
     register IdleHandler *idlePtr, *prevPtr;
     IdleHandler *nextPtr;
@@ -645,14 +679,13 @@ Tcl_CancelIdleCall(proc, clientData)
  *
  * TclServiceIdle --
  *
- *	This procedure is invoked by the notifier when it becomes
- *	idle.  It will invoke all idle handlers that are present at
- *	the time the call is invoked, but not those added during idle
- *	processing.
+ *	This function is invoked by the notifier when it becomes idle. It will
+ *	invoke all idle handlers that are present at the time the call is
+ *	invoked, but not those added during idle processing.
  *
  * Results:
- *	The return value is 1 if TclServiceIdle found something to
- *	do, otherwise return value is 0.
+ *	The return value is 1 if TclServiceIdle found something to do,
+ *	otherwise return value is 0.
  *
  * Side effects:
  *	Invokes all pending idle handlers.
@@ -661,7 +694,7 @@ Tcl_CancelIdleCall(proc, clientData)
  */
 
 int
-TclServiceIdle()
+TclServiceIdle(void)
 {
     IdleHandler *idlePtr;
     int oldGeneration;
@@ -676,22 +709,20 @@ TclServiceIdle()
     tsdPtr->idleGeneration++;
 
     /*
-     * The code below is trickier than it may look, for the following
-     * reasons:
+     * The code below is trickier than it may look, for the following reasons:
      *
-     * 1. New handlers can get added to the list while the current
-     *    one is being processed.  If new ones get added, we don't
-     *    want to process them during this pass through the list (want
-     *    to check for other work to do first).  This is implemented
-     *    using the generation number in the handler:  new handlers
-     *    will have a different generation than any of the ones currently
-     *    on the list.
-     * 2. The handler can call Tcl_DoOneEvent, so we have to remove
-     *    the handler from the list before calling it. Otherwise an
-     *    infinite loop could result.
-     * 3. Tcl_CancelIdleCall can be called to remove an element from
-     *    the list while a handler is executing, so the list could
-     *    change structure during the call.
+     * 1. New handlers can get added to the list while the current one is
+     *	  being processed. If new ones get added, we don't want to process
+     *	  them during this pass through the list (want to check for other work
+     *	  to do first). This is implemented using the generation number in the
+     *	  handler: new handlers will have a different generation than any of
+     *	  the ones currently on the list.
+     * 2. The handler can call Tcl_DoOneEvent, so we have to remove the
+     *	  handler from the list before calling it. Otherwise an infinite loop
+     *	  could result.
+     * 3. Tcl_CancelIdleCall can be called to remove an element from the list
+     *	  while a handler is executing, so the list could change structure
+     *	  during the call.
      */
 
     for (idlePtr = tsdPtr->idleList;
@@ -718,8 +749,8 @@ TclServiceIdle()
  *
  * Tcl_AfterObjCmd --
  *
- *	This procedure is invoked to process the "after" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "after" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result.
@@ -732,21 +763,21 @@ TclServiceIdle()
 
 	/* ARGSUSED */
 int
-Tcl_AfterObjCmd(clientData, interp, objc, objv)
-    ClientData clientData;	/* Unused */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_AfterObjCmd(
+    ClientData clientData,	/* Unused */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *CONST objv[])	/* Argument objects. */
 {
-    int ms;
+    Tcl_WideInt ms;		/* Number of milliseconds to wait */
+    Tcl_Time wakeup;
     AfterInfo *afterPtr;
     AfterAssocData *assocPtr;
     int length;
-    char *argString;
     int index;
     char buf[16 + TCL_INTEGER_SPACE];
     static CONST char *afterSubCmds[] = {
-	"cancel", "idle", "info", (char *) NULL
+	"cancel", "idle", "info", NULL
     };
     enum afterSubCmds {AFTER_CANCEL, AFTER_IDLE, AFTER_INFO};
     ThreadSpecificData *tsdPtr = InitTimer();
@@ -757,11 +788,11 @@ Tcl_AfterObjCmd(clientData, interp, objc, objv)
     }
 
     /*
-     * Create the "after" information associated for this interpreter,
-     * if it doesn't already exist.  
+     * Create the "after" information associated for this interpreter, if it
+     * doesn't already exist.
      */
 
-    assocPtr = Tcl_GetAssocData( interp, "tclAfter", NULL );
+    assocPtr = Tcl_GetAssocData(interp, "tclAfter", NULL);
     if (assocPtr == NULL) {
 	assocPtr = (AfterAssocData *) ckalloc(sizeof(AfterAssocData));
 	assocPtr->interp = interp;
@@ -774,23 +805,35 @@ Tcl_AfterObjCmd(clientData, interp, objc, objv)
      * First lets see if the command was passed a number as the first argument.
      */
 
-    if (objv[1]->typePtr == &tclIntType) {
-	ms = (int) objv[1]->internalRep.longValue;
-	goto processInteger;
-    }
-    argString = Tcl_GetStringFromObj(objv[1], &length);
-    if (argString[0] == '+' || argString[0] == '-'
-	|| isdigit(UCHAR(argString[0]))) {	/* INTL: digit */
-	if (Tcl_GetIntFromObj(interp, objv[1], &ms) != TCL_OK) {
+    if (objv[1]->typePtr == &tclIntType
+#ifndef NO_WIDE_TYPE
+	|| objv[1]->typePtr == &tclWideIntType
+#endif
+	|| objv[1]->typePtr == &tclBignumType
+	|| ( Tcl_GetIndexFromObj(NULL, objv[1], afterSubCmds, "", 0, 
+				 &index) != TCL_OK )) {
+	index = -1;
+	if (Tcl_GetWideIntFromObj(NULL, objv[1], &ms) != TCL_OK) {
+	    Tcl_AppendResult(interp, "bad argument \"",
+			     Tcl_GetString(objv[1]),
+			     "\": must be cancel, idle, info, or an integer",
+			     NULL);
 	    return TCL_ERROR;
 	}
-processInteger:
+    }
+
+    /* 
+     * At this point, either index = -1 and ms contains the number of ms
+     * to wait, or else index is the index of a subcommand.
+     */
+
+    switch (index) {
+    case -1: {
 	if (ms < 0) {
 	    ms = 0;
 	}
 	if (objc == 2) {
-	    Tcl_Sleep(ms);
-	    return TCL_OK;
+	    return AfterDelay(interp, ms);
 	}
 	afterPtr = (AfterInfo *) ckalloc((unsigned) (sizeof(AfterInfo)));
 	afterPtr->assocPtr = assocPtr;
@@ -800,135 +843,202 @@ processInteger:
  	    afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
 	}
 	Tcl_IncrRefCount(afterPtr->commandPtr);
+
 	/*
-	 * The variable below is used to generate unique identifiers for
-	 * after commands.  This id can wrap around, which can potentially
-	 * cause problems.  However, there are not likely to be problems
-	 * in practice, because after commands can only be requested to
-	 * about a month in the future, and wrap-around is unlikely to
-	 * occur in less than about 1-10 years.  Thus it's unlikely that
-	 * any old ids will still be around when wrap-around occurs.
+	 * The variable below is used to generate unique identifiers for after
+	 * commands. This id can wrap around, which can potentially cause
+	 * problems. However, there are not likely to be problems in practice,
+	 * because after commands can only be requested to about a month in
+	 * the future, and wrap-around is unlikely to occur in less than about
+	 * 1-10 years. Thus it's unlikely that any old ids will still be
+	 * around when wrap-around occurs.
 	 */
+
 	afterPtr->id = tsdPtr->afterId;
 	tsdPtr->afterId += 1;
-	afterPtr->token = Tcl_CreateTimerHandler(ms, AfterProc,
-		(ClientData) afterPtr);
+	Tcl_GetTime(&wakeup);
+	wakeup.sec += (long)(ms / 1000);
+	wakeup.usec += ((long)(ms % 1000)) * 1000;
+	if (wakeup.usec > 1000000) {
+	    wakeup.sec++;
+	    wakeup.usec -= 1000000;
+	}
+	afterPtr->token = TclCreateAbsoluteTimerHandler(&wakeup, AfterProc,
+							(ClientData) afterPtr);
 	afterPtr->nextPtr = assocPtr->firstAfterPtr;
 	assocPtr->firstAfterPtr = afterPtr;
-	sprintf(buf, "after#%d", afterPtr->id);
-	Tcl_AppendResult(interp, buf, (char *) NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf("after#%d", afterPtr->id));
 	return TCL_OK;
     }
+    case AFTER_CANCEL: {
+	Tcl_Obj *commandPtr;
+	char *command, *tempCommand;
+	int tempLength;
 
-    /*
-     * If it's not a number it must be a subcommand.
-     */
-
-    if (Tcl_GetIndexFromObj(NULL, objv[1], afterSubCmds, "argument",
-            0, &index) != TCL_OK) {
-	Tcl_AppendResult(interp, "bad argument \"", argString,
-		"\": must be cancel, idle, info, or a number",
-		(char *) NULL);
-	return TCL_ERROR;
-    }
-    switch ((enum afterSubCmds) index) {
-        case AFTER_CANCEL: {
-	    Tcl_Obj *commandPtr;
-	    char *command, *tempCommand;
-	    int tempLength;
-
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "id|command");
-		return TCL_ERROR;
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "id|command");
+	    return TCL_ERROR;
+	}
+	if (objc == 3) {
+	    commandPtr = objv[2];
+	} else {
+	    commandPtr = Tcl_ConcatObj(objc-2, objv+2);;
+	}
+	command = Tcl_GetStringFromObj(commandPtr, &length);
+	for (afterPtr = assocPtr->firstAfterPtr;  afterPtr != NULL;
+		afterPtr = afterPtr->nextPtr) {
+	    tempCommand = Tcl_GetStringFromObj(afterPtr->commandPtr,
+		    &tempLength);
+	    if ((length == tempLength)
+		    && (memcmp((void*) command, (void*) tempCommand,
+			    (unsigned) length) == 0)) {
+		break;
 	    }
-	    if (objc == 3) {
-		commandPtr = objv[2];
+	}
+	if (afterPtr == NULL) {
+	    afterPtr = GetAfterEvent(assocPtr, commandPtr);
+	}
+	if (objc != 3) {
+	    Tcl_DecrRefCount(commandPtr);
+	}
+	if (afterPtr != NULL) {
+	    if (afterPtr->token != NULL) {
+		Tcl_DeleteTimerHandler(afterPtr->token);
 	    } else {
-		commandPtr = Tcl_ConcatObj(objc-2, objv+2);;
+		Tcl_CancelIdleCall(AfterProc, (ClientData) afterPtr);
 	    }
-	    command = Tcl_GetStringFromObj(commandPtr, &length);
-	    for (afterPtr = assocPtr->firstAfterPtr;  afterPtr != NULL;
+	    FreeAfterPtr(afterPtr);
+	}
+	break;
+    }
+    case AFTER_IDLE:
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "script script ...");
+	    return TCL_ERROR;
+	}
+	afterPtr = (AfterInfo *) ckalloc((unsigned) (sizeof(AfterInfo)));
+	afterPtr->assocPtr = assocPtr;
+	if (objc == 3) {
+	    afterPtr->commandPtr = objv[2];
+	} else {
+	    afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
+	}
+	Tcl_IncrRefCount(afterPtr->commandPtr);
+	afterPtr->id = tsdPtr->afterId;
+	tsdPtr->afterId += 1;
+	afterPtr->token = NULL;
+	afterPtr->nextPtr = assocPtr->firstAfterPtr;
+	assocPtr->firstAfterPtr = afterPtr;
+	Tcl_DoWhenIdle(AfterProc, (ClientData) afterPtr);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf("after#%d", afterPtr->id));
+	break;
+    case AFTER_INFO: {
+	Tcl_Obj *resultListPtr;
+
+	if (objc == 2) {
+	    for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
 		    afterPtr = afterPtr->nextPtr) {
-		tempCommand = Tcl_GetStringFromObj(afterPtr->commandPtr,
-			&tempLength);
-		if ((length == tempLength)
-		        && (memcmp((void*) command, (void*) tempCommand,
-			        (unsigned) length) == 0)) {
-		    break;
-		}
-	    }
-	    if (afterPtr == NULL) {
-		afterPtr = GetAfterEvent(assocPtr, commandPtr);
-	    }
-	    if (objc != 3) {
-		Tcl_DecrRefCount(commandPtr);
-	    }
-	    if (afterPtr != NULL) {
-		if (afterPtr->token != NULL) {
-		    Tcl_DeleteTimerHandler(afterPtr->token);
-		} else {
-		    Tcl_CancelIdleCall(AfterProc, (ClientData) afterPtr);
+		if (assocPtr->interp == interp) {
+		    sprintf(buf, "after#%d", afterPtr->id);
+		    Tcl_AppendElement(interp, buf);
 		}
-		FreeAfterPtr(afterPtr);
 	    }
-	    break;
+	    return TCL_OK;
+	}
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "?id?");
+	    return TCL_ERROR;
+	}
+	afterPtr = GetAfterEvent(assocPtr, objv[2]);
+	if (afterPtr == NULL) {
+	    Tcl_AppendResult(interp, "event \"", TclGetString(objv[2]),
+		    "\" doesn't exist", NULL);
+	    return TCL_ERROR;
 	}
-	case AFTER_IDLE:
-	    if (objc < 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "script script ...");
+	resultListPtr = Tcl_NewObj();
+	Tcl_ListObjAppendElement(interp, resultListPtr, afterPtr->commandPtr);
+	Tcl_ListObjAppendElement(interp, resultListPtr, Tcl_NewStringObj(
+ 		(afterPtr->token == NULL) ? "idle" : "timer", -1));
+	Tcl_SetObjResult(interp, resultListPtr);
+	break;
+    }
+    default:
+	Tcl_Panic("Tcl_AfterObjCmd: bad subcommand index to afterSubCmds");
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AfterDelay --
+ *
+ *	Implements the blocking delay behaviour of [after $time]. Tricky
+ *	because it has to take into account any time limit that has been set.
+ *
+ * Results:
+ *	Standard Tcl result code (with error set if an error occurred due to a
+ *	time limit being exceeded).
+ *
+ * Side effects:
+ *	May adjust the time limit granularity marker.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+AfterDelay(
+    Tcl_Interp *interp,
+    Tcl_WideInt ms)
+{
+    Interp *iPtr = (Interp *) interp;
+
+    Tcl_Time endTime, now;
+    Tcl_WideInt diff;
+
+    Tcl_GetTime(&endTime);
+    endTime.sec += (long)(ms/1000);
+    endTime.usec += ((int)(ms%1000))*1000;
+    if (endTime.usec >= 1000000) {
+	endTime.sec++;
+	endTime.usec -= 1000000;
+    }
+
+    do {
+	Tcl_GetTime(&now);
+	if (iPtr->limit.timeEvent != NULL
+	    && TCL_TIME_BEFORE(iPtr->limit.time, now)) {
+	    iPtr->limit.granularityTicker = 0;
+	    if (Tcl_LimitCheck(interp) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    afterPtr = (AfterInfo *) ckalloc((unsigned) (sizeof(AfterInfo)));
-	    afterPtr->assocPtr = assocPtr;
-	    if (objc == 3) {
- 		afterPtr->commandPtr = objv[2];
-	    } else {
-		afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
+	}
+	if (iPtr->limit.timeEvent == NULL
+	    || TCL_TIME_BEFORE(endTime, iPtr->limit.time)) {
+	    diff = TCL_TIME_DIFF_MS(endTime, now);
+#ifndef TCL_WIDE_INT_IS_LONG
+	    if (diff > LONG_MAX) {
+		diff = LONG_MAX;
 	    }
-	    Tcl_IncrRefCount(afterPtr->commandPtr);
-	    afterPtr->id = tsdPtr->afterId;
-	    tsdPtr->afterId += 1;
-	    afterPtr->token = NULL;
-	    afterPtr->nextPtr = assocPtr->firstAfterPtr;
-	    assocPtr->firstAfterPtr = afterPtr;
-	    Tcl_DoWhenIdle(AfterProc, (ClientData) afterPtr);
-	    sprintf(buf, "after#%d", afterPtr->id);
-	    Tcl_AppendResult(interp, buf, (char *) NULL);
-	    break;
-	case AFTER_INFO: {
-	    Tcl_Obj *resultListPtr;
-
-	    if (objc == 2) {
-		for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
-		     afterPtr = afterPtr->nextPtr) {
-		    if (assocPtr->interp == interp) {
-			sprintf(buf, "after#%d", afterPtr->id);
-			Tcl_AppendElement(interp, buf);
-		    }
-		}
-		return TCL_OK;
+#endif
+	    if (diff > 0) {
+		Tcl_Sleep((long)diff);
 	    }
-	    if (objc != 3) {
-		Tcl_WrongNumArgs(interp, 2, objv, "?id?");
-		return TCL_ERROR;
+	} else {
+	    diff = TCL_TIME_DIFF_MS(iPtr->limit.time, now);
+#ifndef TCL_WIDE_INT_IS_LONG
+	    if (diff > LONG_MAX) {
+		diff = LONG_MAX;
 	    }
-	    afterPtr = GetAfterEvent(assocPtr, objv[2]);
-	    if (afterPtr == NULL) {
-		Tcl_AppendResult(interp, "event \"", Tcl_GetString(objv[2]),
-			"\" doesn't exist", (char *) NULL);
+#endif
+	    if (diff > 0) {
+		Tcl_Sleep((long)diff);
+	    }
+	    if (Tcl_LimitCheck(interp) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    resultListPtr = Tcl_GetObjResult(interp);
- 	    Tcl_ListObjAppendElement(interp, resultListPtr, afterPtr->commandPtr);
- 	    Tcl_ListObjAppendElement(interp, resultListPtr, Tcl_NewStringObj(
- 		(afterPtr->token == NULL) ? "idle" : "timer", -1));
-	    Tcl_SetObjResult(interp, resultListPtr);
-	    break;
-	}
-	default: {
-	    panic("Tcl_AfterObjCmd: bad subcommand index to afterSubCmds");
 	}
-    }
+    } while (TCL_TIME_BEFORE(now, endTime));
     return TCL_OK;
 }
 
@@ -937,13 +1047,13 @@ processInteger:
  *
  * GetAfterEvent --
  *
- *	This procedure parses an "after" id such as "after#4" and
- *	returns a pointer to the AfterInfo structure.
+ *	This function parses an "after" id such as "after#4" and returns a
+ *	pointer to the AfterInfo structure.
  *
  * Results:
- *	The return value is either a pointer to an AfterInfo structure,
- *	if one is found that corresponds to "cmdString" and is for interp,
- *	or NULL if no corresponding after event can be found.
+ *	The return value is either a pointer to an AfterInfo structure, if one
+ *	is found that corresponds to "cmdString" and is for interp, or NULL if
+ *	no corresponding after event can be found.
  *
  * Side effects:
  *	None.
@@ -952,18 +1062,18 @@ processInteger:
  */
 
 static AfterInfo *
-GetAfterEvent(assocPtr, commandPtr)
-    AfterAssocData *assocPtr;	/* Points to "after"-related information for
+GetAfterEvent(
+    AfterAssocData *assocPtr,	/* Points to "after"-related information for
 				 * this interpreter. */
-    Tcl_Obj *commandPtr;
+    Tcl_Obj *commandPtr)
 {
-    char *cmdString;		/* Textual identifier for after event, such
-				 * as "after#6". */
+    char *cmdString;		/* Textual identifier for after event, such as
+				 * "after#6". */
     AfterInfo *afterPtr;
     int id;
     char *end;
 
-    cmdString = Tcl_GetString(commandPtr);
+    cmdString = TclGetString(commandPtr);
     if (strncmp(cmdString, "after#", 6) != 0) {
 	return NULL;
     }
@@ -986,37 +1096,34 @@ GetAfterEvent(assocPtr, commandPtr)
  *
  * AfterProc --
  *
- *	Timer callback to execute commands registered with the
- *	"after" command.
+ *	Timer callback to execute commands registered with the "after"
+ *	command.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Executes whatever command was specified.  If the command
- *	returns an error, then the command "bgerror" is invoked
- *	to process the error;  if bgerror fails then information
- *	about the error is output on stderr.
+ *	Executes whatever command was specified. If the command returns an
+ *	error, then the command "bgerror" is invoked to process the error; if
+ *	bgerror fails then information about the error is output on stderr.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-AfterProc(clientData)
-    ClientData clientData;	/* Describes command to execute. */
+AfterProc(
+    ClientData clientData)	/* Describes command to execute. */
 {
     AfterInfo *afterPtr = (AfterInfo *) clientData;
     AfterAssocData *assocPtr = afterPtr->assocPtr;
     AfterInfo *prevPtr;
     int result;
     Tcl_Interp *interp;
-    char *script;
-    int numBytes;
 
     /*
-     * First remove the callback from our list of callbacks;  otherwise
-     * someone could delete the callback while it's being executed, which
-     * could cause a core dump.
+     * First remove the callback from our list of callbacks; otherwise someone
+     * could delete the callback while it's being executed, which could cause
+     * a core dump.
      */
 
     if (assocPtr->firstAfterPtr == afterPtr) {
@@ -1035,14 +1142,13 @@ AfterProc(clientData)
 
     interp = assocPtr->interp;
     Tcl_Preserve((ClientData) interp);
-    script = Tcl_GetStringFromObj(afterPtr->commandPtr, &numBytes);
-    result = Tcl_EvalEx(interp, script, numBytes, TCL_EVAL_GLOBAL);
+    result = Tcl_EvalObjEx(interp, afterPtr->commandPtr, TCL_EVAL_GLOBAL);
     if (result != TCL_OK) {
 	Tcl_AddErrorInfo(interp, "\n    (\"after\" script)");
-	Tcl_BackgroundError(interp);
+	TclBackgroundException(interp, result);
     }
     Tcl_Release((ClientData) interp);
-    
+
     /*
      * Free the memory for the callback.
      */
@@ -1056,10 +1162,9 @@ AfterProc(clientData)
  *
  * FreeAfterPtr --
  *
- *	This procedure removes an "after" command from the list of
- *	those that are pending and frees its resources.  This procedure
- *	does *not* cancel the timer handler;  if that's needed, the
- *	caller must do it.
+ *	This function removes an "after" command from the list of those that
+ *	are pending and frees its resources. This function does *not* cancel
+ *	the timer handler; if that's needed, the caller must do it.
  *
  * Results:
  *	None.
@@ -1071,8 +1176,8 @@ AfterProc(clientData)
  */
 
 static void
-FreeAfterPtr(afterPtr)
-    AfterInfo *afterPtr;		/* Command to be deleted. */
+FreeAfterPtr(
+    AfterInfo *afterPtr)		/* Command to be deleted. */
 {
     AfterInfo *prevPtr;
     AfterAssocData *assocPtr = afterPtr->assocPtr;
@@ -1095,7 +1200,7 @@ FreeAfterPtr(afterPtr)
  *
  * AfterCleanupProc --
  *
- *	This procedure is invoked whenever an interpreter is deleted
+ *	This function is invoked whenever an interpreter is deleted
  *	to cleanup the AssocData for "tclAfter".
  *
  * Results:
@@ -1109,10 +1214,10 @@ FreeAfterPtr(afterPtr)
 
 	/* ARGSUSED */
 static void
-AfterCleanupProc(clientData, interp)
-    ClientData clientData;	/* Points to AfterAssocData for the
+AfterCleanupProc(
+    ClientData clientData,	/* Points to AfterAssocData for the
 				 * interpreter. */
-    Tcl_Interp *interp;		/* Interpreter that is being deleted. */
+    Tcl_Interp *interp)		/* Interpreter that is being deleted. */
 {
     AfterAssocData *assocPtr = (AfterAssocData *) clientData;
     AfterInfo *afterPtr;
@@ -1130,3 +1235,11 @@ AfterCleanupProc(clientData, interp)
     }
     ckfree((char *) assocPtr);
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclTomMath.decls b/generic/tclTomMath.decls
new file mode 100644
index 0000000..1bfc443
--- /dev/null
+++ b/generic/tclTomMath.decls
@@ -0,0 +1,222 @@
+# tclTomMath.decls --
+#
+#	This file contains the declarations for the functions in
+#	'libtommath' that are contained within the Tcl library.
+#	This file is used to generate the 'tclTomMathDecls.h' and
+#	'tclTomMathStub.c' files.
+#
+# If you edit this file, advance the revision number (and the epoch
+# if the new stubs are not backward compatible) in tclTomMathDecls.h
+#
+# Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
+#
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+
+library tcl
+
+# Define the unsupported generic interfaces.
+
+interface tclTomMath
+# hooks {tclTomMathInt}
+
+# Declare each of the functions in the Tcl tommath interface
+
+declare 0 generic {
+    int TclBN_epoch(void)
+}
+declare 1 generic {
+    int TclBN_revision(void)
+}
+
+declare 2 generic {
+    int TclBN_mp_add(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 3 generic {
+    int TclBN_mp_add_d(mp_int *a, mp_digit b, mp_int *c)
+}
+declare 4 generic {
+    int TclBN_mp_and(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 5 generic {
+    void TclBN_mp_clamp(mp_int *a)
+}
+declare 6 generic {
+    void TclBN_mp_clear(mp_int *a)
+}
+declare 7 generic {
+    void TclBN_mp_clear_multi(mp_int *a, ...)
+}
+declare 8 generic {
+    int TclBN_mp_cmp(mp_int *a, mp_int *b)
+}
+declare 9 generic {
+    int TclBN_mp_cmp_d(mp_int *a, mp_digit b)
+}
+declare 10 generic {
+    int TclBN_mp_cmp_mag(mp_int *a, mp_int *b)
+}
+declare 11 generic {
+    int TclBN_mp_copy(mp_int *a, mp_int *b)
+}
+declare 12 generic {
+    int TclBN_mp_count_bits(mp_int *a)
+}
+declare 13 generic {
+    int TclBN_mp_div(mp_int *a, mp_int *b, mp_int *q, mp_int *r)
+}
+declare 14 generic {
+    int TclBN_mp_div_d(mp_int *a, mp_digit b, mp_int *q, mp_digit *r)
+}
+declare 15 generic {
+    int TclBN_mp_div_2(mp_int *a, mp_int *q)
+}
+declare 16 generic {
+    int TclBN_mp_div_2d(mp_int *a, int b, mp_int *q, mp_int *r)
+}
+declare 17 generic {
+    int TclBN_mp_div_3(mp_int *a, mp_int *q, mp_digit *r)
+}
+declare 18 generic {
+    void TclBN_mp_exch(mp_int *a, mp_int *b)
+}
+declare 19 generic {
+    int TclBN_mp_expt_d(mp_int *a, mp_digit b, mp_int *c)
+}
+declare 20 generic {
+    int TclBN_mp_grow(mp_int *a, int size)
+}
+declare 21 generic {
+    int TclBN_mp_init(mp_int *a)
+}
+declare 22 generic {
+    int TclBN_mp_init_copy(mp_int *a, mp_int *b)
+}
+declare 23 generic {
+    int TclBN_mp_init_multi(mp_int *a, ...)
+}
+declare 24 generic {
+    int TclBN_mp_init_set(mp_int *a, mp_digit b)
+}
+declare 25 generic {
+    int TclBN_mp_init_size(mp_int *a, int size)
+}
+declare 26 generic {
+    int TclBN_mp_lshd(mp_int *a, int shift)
+}
+declare 27 generic {
+    int TclBN_mp_mod(mp_int *a, mp_int *b, mp_int *r)
+}
+declare 28 generic {
+    int TclBN_mp_mod_2d(mp_int *a, int b, mp_int *r)
+}
+declare 29 generic {
+    int TclBN_mp_mul(mp_int *a, mp_int *b, mp_int *p)
+}
+declare 30 generic {
+    int TclBN_mp_mul_d(mp_int *a, mp_digit b, mp_int *p)
+}
+declare 31 generic {
+    int TclBN_mp_mul_2(mp_int *a, mp_int *p)
+}
+declare 32 generic {
+    int TclBN_mp_mul_2d(mp_int *a, int d, mp_int *p)
+}
+declare 33 generic {
+    int TclBN_mp_neg(mp_int *a, mp_int *b)
+}
+declare 34 generic {
+    int TclBN_mp_or(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 35 generic {
+    int TclBN_mp_radix_size(mp_int *a, int radix, int *size)
+}
+declare 36 generic {
+    int TclBN_mp_read_radix(mp_int *a, const char *str, int radix)
+}
+declare 37 generic {
+    void TclBN_mp_rshd(mp_int *a, int shift)
+}
+declare 38 generic {
+    int TclBN_mp_shrink(mp_int *a)
+}
+declare 39 generic {
+    void TclBN_mp_set(mp_int *a, mp_digit b)
+}
+declare 40 generic {
+    int TclBN_mp_sqr(mp_int *a, mp_int *b)
+}
+declare 41 generic {
+    int TclBN_mp_sqrt(mp_int *a, mp_int *b)
+}
+declare 42 generic {
+    int TclBN_mp_sub(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 43 generic {
+    int TclBN_mp_sub_d(mp_int *a, mp_digit b, mp_int *c)
+}
+declare 44 generic {
+    int TclBN_mp_to_unsigned_bin(mp_int *a, unsigned char *b)
+}
+declare 45 generic {
+    int TclBN_mp_to_unsigned_bin_n(mp_int *a, unsigned char *b,
+	    unsigned long *outlen)
+}
+declare 46 generic {
+    int TclBN_mp_toradix_n(mp_int *a, char *str, int radix, int maxlen)
+}
+declare 47 generic {
+    int TclBN_mp_unsigned_bin_size(mp_int *a)
+}
+declare 48 generic {
+    int TclBN_mp_xor(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 49 generic {
+    void TclBN_mp_zero(mp_int *a)
+}
+
+# internal routines to libtommath - should not be called but must be
+# exported to accommodate the "tommath" extension
+
+declare 50 generic {
+    void TclBN_reverse(unsigned char *s, int len)
+}
+declare 51 generic {
+    int TclBN_fast_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs)
+}
+declare 52 generic {
+    int TclBN_fast_s_mp_sqr(mp_int *a, mp_int *b)
+}
+declare 53 generic {
+    int TclBN_mp_karatsuba_mul(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 54 generic {
+    int TclBN_mp_karatsuba_sqr(mp_int *a, mp_int *b)
+}
+declare 55 generic {
+    int TclBN_mp_toom_mul(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 56 generic {
+    int TclBN_mp_toom_sqr(mp_int *a, mp_int *b)
+}
+declare 57 generic {
+    int TclBN_s_mp_add(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 58 generic {
+    int TclBN_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs)
+}
+declare 59 generic {
+    int TclBN_s_mp_sqr(mp_int *a, mp_int *b)
+}
+declare 60 generic {
+    int TclBN_s_mp_sub(mp_int *a, mp_int *b, mp_int *c)
+}
+declare 61 {
+    int TclBN_mp_init_set_int(mp_int *a, unsigned long i)
+}
+declare 62 {
+    int TclBN_mp_set_int(mp_int *a, unsigned long i)
+}
+declare 63 {
+    int TclBN_mp_cnt_lsb(mp_int *a)
+}
diff --git a/generic/tclTomMath.h b/generic/tclTomMath.h
new file mode 100644
index 0000000..550dafa
--- /dev/null
+++ b/generic/tclTomMath.h
@@ -0,0 +1,836 @@
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
+ */
+#ifndef BN_H_
+#define BN_H_
+
+#include <tclTomMathDecls.h>
+#ifndef MODULE_SCOPE
+#define MODULE_SCOPE extern
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <limits.h>
+
+#ifndef MIN
+   #define MIN(x,y) ((x)<(y)?(x):(y))
+#endif
+
+#ifndef MAX
+   #define MAX(x,y) ((x)>(y)?(x):(y))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+
+/* C++ compilers don't like assigning void * to mp_digit * */
+#define  OPT_CAST(x)  (x *)
+
+#else
+
+/* C on the other hand doesn't care */
+#define  OPT_CAST(x)
+
+#endif
+
+
+/* detect 64-bit mode if possible */
+#if defined(NEVER)  /* 128-bit ints fail in too many places */
+   #if !(defined(MP_64BIT) && defined(MP_16BIT) && defined(MP_8BIT))
+      #define MP_64BIT
+   #endif
+#endif
+
+/* some default configurations.
+ *
+ * A "mp_digit" must be able to hold DIGIT_BIT + 1 bits
+ * A "mp_word" must be able to hold 2*DIGIT_BIT + 1 bits
+ *
+ * At the very least a mp_digit must be able to hold 7 bits
+ * [any size beyond that is ok provided it doesn't overflow the data type]
+ */
+#ifdef MP_8BIT
+#ifndef MP_DIGIT_DECLARED
+   typedef unsigned char      mp_digit;
+#define MP_DIGIT_DECLARED
+#endif
+   typedef unsigned short     mp_word;
+#elif defined(MP_16BIT)
+#ifndef MP_DIGIT_DECLARED
+   typedef unsigned short     mp_digit;
+#define MP_DIGIT_DECLARED
+#endif
+   typedef unsigned long      mp_word;
+#elif defined(MP_64BIT)
+   /* for GCC only on supported platforms */
+#ifndef CRYPT
+   typedef unsigned long long ulong64;
+   typedef signed long long   long64;
+#endif
+
+#ifndef MP_DIGIT_DECLARED
+   typedef unsigned long      mp_digit;
+#define MP_DIGIT_DECLARED
+#endif
+   typedef unsigned long      mp_word __attribute__ ((mode(TI)));
+
+   #define DIGIT_BIT          60
+#else
+   /* this is the default case, 28-bit digits */
+   
+   /* this is to make porting into LibTomCrypt easier :-) */
+#ifndef CRYPT
+   #if defined(_MSC_VER) || defined(__BORLANDC__) 
+      typedef unsigned __int64   ulong64;
+      typedef signed __int64     long64;
+   #else
+      typedef unsigned long long ulong64;
+      typedef signed long long   long64;
+   #endif
+#endif
+
+#ifndef MP_DIGIT_DECLARED
+   typedef unsigned int      mp_digit;
+#define MP_DIGIT_DECLARED
+#endif
+   typedef ulong64            mp_word;
+
+#ifdef MP_31BIT   
+   /* this is an extension that uses 31-bit digits */
+   #define DIGIT_BIT          31
+#else
+   /* default case is 28-bit digits, defines MP_28BIT as a handy macro to test */
+   #define DIGIT_BIT          28
+   #define MP_28BIT
+#endif   
+#endif
+
+/* define heap macros */
+#if 0 /* these are macros in tclTomMathDecls.h */
+#ifndef CRYPT
+   /* default to libc stuff */
+   #ifndef XMALLOC 
+       #define XMALLOC  malloc
+       #define XFREE    free
+       #define XREALLOC realloc
+       #define XCALLOC  calloc
+   #else
+      /* prototypes for our heap functions */
+      extern void *XMALLOC(size_t n);
+      extern void *XREALLOC(void *p, size_t n);
+      extern void *XCALLOC(size_t n, size_t s);
+      extern void XFREE(void *p);
+   #endif
+#endif
+#endif
+
+
+/* otherwise the bits per digit is calculated automatically from the size of a mp_digit */
+#ifndef DIGIT_BIT
+   #define DIGIT_BIT     ((int)((CHAR_BIT * sizeof(mp_digit) - 1)))  /* bits per digit */
+#endif
+
+#define MP_DIGIT_BIT     DIGIT_BIT
+#define MP_MASK          ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1))
+#define MP_DIGIT_MAX     MP_MASK
+
+/* equalities */
+#define MP_LT        -1   /* less than */
+#define MP_EQ         0   /* equal to */
+#define MP_GT         1   /* greater than */
+
+#define MP_ZPOS       0   /* positive integer */
+#define MP_NEG        1   /* negative */
+
+#define MP_OKAY       0   /* ok result */
+#define MP_MEM        -2  /* out of mem */
+#define MP_VAL        -3  /* invalid input */
+#define MP_RANGE      MP_VAL
+
+#define MP_YES        1   /* yes response */
+#define MP_NO         0   /* no response */
+
+/* Primality generation flags */
+#define LTM_PRIME_BBS      0x0001 /* BBS style prime */
+#define LTM_PRIME_SAFE     0x0002 /* Safe prime (p-1)/2 == prime */
+#define LTM_PRIME_2MSB_ON  0x0008 /* force 2nd MSB to 1 */
+
+typedef int           mp_err;
+
+/* you'll have to tune these... */
+#if defined(BUILD_tcl) || !defined(_WIN32)
+MODULE_SCOPE int KARATSUBA_MUL_CUTOFF,
+           KARATSUBA_SQR_CUTOFF,
+           TOOM_MUL_CUTOFF,
+           TOOM_SQR_CUTOFF;
+#endif
+
+/* define this to use lower memory usage routines (exptmods mostly) */
+/* #define MP_LOW_MEM */
+
+/* default precision */
+#ifndef MP_PREC
+   #ifndef MP_LOW_MEM
+      #define MP_PREC                 32     /* default digits of precision */
+   #else
+      #define MP_PREC                 8      /* default digits of precision */
+   #endif   
+#endif
+
+/* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - BITS_PER_DIGIT*2) */
+#define MP_WARRAY               (1 << (sizeof(mp_word) * CHAR_BIT - 2 * DIGIT_BIT + 1))
+
+/* the infamous mp_int structure */
+#ifndef MP_INT_DECLARED
+#define MP_INT_DECLARED
+typedef struct mp_int mp_int;
+#endif
+struct mp_int {
+    int used, alloc, sign;
+    mp_digit *dp;
+};
+
+/* callback for mp_prime_random, should fill dst with random bytes and return how many read [upto len] */
+typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
+
+
+#define USED(m)    ((m)->used)
+#define DIGIT(m,k) ((m)->dp[(k)])
+#define SIGN(m)    ((m)->sign)
+
+/* error code to char* string */
+/*
+char *mp_error_to_string(int code);
+*/
+
+/* ---> init and deinit bignum functions <--- */
+/* init a bignum */
+/*
+int mp_init(mp_int *a);
+*/
+
+/* free a bignum */
+/*
+void mp_clear(mp_int *a);
+*/
+
+/* init a null terminated series of arguments */
+/*
+int mp_init_multi(mp_int *mp, ...);
+*/
+
+/* clear a null terminated series of arguments */
+/*
+void mp_clear_multi(mp_int *mp, ...);
+*/
+
+/* exchange two ints */
+/*
+void mp_exch(mp_int *a, mp_int *b);
+*/
+
+/* shrink ram required for a bignum */
+/*
+int mp_shrink(mp_int *a);
+*/
+
+/* grow an int to a given size */
+/*
+int mp_grow(mp_int *a, int size);
+*/
+
+/* init to a given number of digits */
+/*
+int mp_init_size(mp_int *a, int size);
+*/
+
+/* ---> Basic Manipulations <--- */
+#define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
+#define mp_iseven(a) (((a)->used == 0 || (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
+#define mp_isodd(a)  (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
+
+/* set to zero */
+/*
+void mp_zero(mp_int *a);
+*/
+
+/* set to a digit */
+/*
+void mp_set(mp_int *a, mp_digit b);
+*/
+
+/* set a 32-bit const */
+/*
+int mp_set_int(mp_int *a, unsigned long b);
+*/
+
+/* get a 32-bit value */
+unsigned long mp_get_int(mp_int * a);
+
+/* initialize and set a digit */
+/*
+int mp_init_set (mp_int * a, mp_digit b);
+*/
+
+/* initialize and set 32-bit value */
+/*
+int mp_init_set_int (mp_int * a, unsigned long b);
+*/
+
+/* copy, b = a */
+/*
+int mp_copy(mp_int *a, mp_int *b);
+*/
+
+/* inits and copies, a = b */
+/*
+int mp_init_copy(mp_int *a, mp_int *b);
+*/
+
+/* trim unused digits */
+/*
+void mp_clamp(mp_int *a);
+*/
+
+/* ---> digit manipulation <--- */
+
+/* right shift by "b" digits */
+/*
+void mp_rshd(mp_int *a, int b);
+*/
+
+/* left shift by "b" digits */
+/*
+int mp_lshd(mp_int *a, int b);
+*/
+
+/* c = a / 2**b */
+/*
+int mp_div_2d(mp_int *a, int b, mp_int *c, mp_int *d);
+*/
+
+/* b = a/2 */
+/*
+int mp_div_2(mp_int *a, mp_int *b);
+*/
+
+/* c = a * 2**b */
+/*
+int mp_mul_2d(mp_int *a, int b, mp_int *c);
+*/
+
+/* b = a*2 */
+/*
+int mp_mul_2(mp_int *a, mp_int *b);
+*/
+
+/* c = a mod 2**d */
+/*
+int mp_mod_2d(mp_int *a, int b, mp_int *c);
+*/
+
+/* computes a = 2**b */
+/*
+int mp_2expt(mp_int *a, int b);
+*/
+
+/* Counts the number of lsbs which are zero before the first zero bit */
+/*
+int mp_cnt_lsb(mp_int *a);
+*/
+
+/* I Love Earth! */
+
+/* makes a pseudo-random int of a given size */
+/*
+int mp_rand(mp_int *a, int digits);
+*/
+
+/* ---> binary operations <--- */
+/* c = a XOR b  */
+/*
+int mp_xor(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* c = a OR b */
+/*
+int mp_or(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* c = a AND b */
+/*
+int mp_and(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* ---> Basic arithmetic <--- */
+
+/* b = -a */
+/*
+int mp_neg(mp_int *a, mp_int *b);
+*/
+
+/* b = |a| */
+/*
+int mp_abs(mp_int *a, mp_int *b);
+*/
+
+/* compare a to b */
+/*
+int mp_cmp(mp_int *a, mp_int *b);
+*/
+
+/* compare |a| to |b| */
+/*
+int mp_cmp_mag(mp_int *a, mp_int *b);
+*/
+
+/* c = a + b */
+/*
+int mp_add(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* c = a - b */
+/*
+int mp_sub(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* c = a * b */
+/*
+int mp_mul(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* b = a*a  */
+/*
+int mp_sqr(mp_int *a, mp_int *b);
+*/
+
+/* a/b => cb + d == a */
+/*
+int mp_div(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
+*/
+
+/* c = a mod b, 0 <= c < b  */
+/*
+int mp_mod(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* ---> single digit functions <--- */
+
+/* compare against a single digit */
+/*
+int mp_cmp_d(mp_int *a, mp_digit b);
+*/
+
+/* c = a + b */
+/*
+int mp_add_d(mp_int *a, mp_digit b, mp_int *c);
+*/
+
+/* c = a - b */
+/*
+int mp_sub_d(mp_int *a, mp_digit b, mp_int *c);
+*/
+
+/* c = a * b */
+/*
+int mp_mul_d(mp_int *a, mp_digit b, mp_int *c);
+*/
+
+/* a/b => cb + d == a */
+/*
+int mp_div_d(mp_int *a, mp_digit b, mp_int *c, mp_digit *d);
+*/
+
+/* a/3 => 3c + d == a */
+/*
+int mp_div_3(mp_int *a, mp_int *c, mp_digit *d);
+*/
+
+/* c = a**b */
+/*
+int mp_expt_d(mp_int *a, mp_digit b, mp_int *c);
+*/
+
+/* c = a mod b, 0 <= c < b  */
+/*
+int mp_mod_d(mp_int *a, mp_digit b, mp_digit *c);
+*/
+
+/* ---> number theory <--- */
+
+/* d = a + b (mod c) */
+/*
+int mp_addmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
+*/
+
+/* d = a - b (mod c) */
+/*
+int mp_submod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
+*/
+
+/* d = a * b (mod c) */
+/*
+int mp_mulmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
+*/
+
+/* c = a * a (mod b) */
+/*
+int mp_sqrmod(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* c = 1/a (mod b) */
+/*
+int mp_invmod(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* c = (a, b) */
+/*
+int mp_gcd(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* produces value such that U1*a + U2*b = U3 */
+/*
+int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3);
+*/
+
+/* c = [a, b] or (a*b)/(a, b) */
+/*
+int mp_lcm(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* finds one of the b'th root of a, such that |c|**b <= |a|
+ *
+ * returns error if a < 0 and b is even
+ */
+/*
+int mp_n_root(mp_int *a, mp_digit b, mp_int *c);
+*/
+
+/* special sqrt algo */
+/*
+int mp_sqrt(mp_int *arg, mp_int *ret);
+*/
+
+/* is number a square? */
+/*
+int mp_is_square(mp_int *arg, int *ret);
+*/
+
+/* computes the jacobi c = (a | n) (or Legendre if b is prime)  */
+/*
+int mp_jacobi(mp_int *a, mp_int *n, int *c);
+*/
+
+/* used to setup the Barrett reduction for a given modulus b */
+/*
+int mp_reduce_setup(mp_int *a, mp_int *b);
+*/
+
+/* Barrett Reduction, computes a (mod b) with a precomputed value c
+ *
+ * Assumes that 0 < a <= b*b, note if 0 > a > -(b*b) then you can merely
+ * compute the reduction as -1 * mp_reduce(mp_abs(a)) [pseudo code].
+ */
+/*
+int mp_reduce(mp_int *a, mp_int *b, mp_int *c);
+*/
+
+/* setups the montgomery reduction */
+/*
+int mp_montgomery_setup(mp_int *a, mp_digit *mp);
+*/
+
+/* computes a = B**n mod b without division or multiplication useful for
+ * normalizing numbers in a Montgomery system.
+ */
+/*
+int mp_montgomery_calc_normalization(mp_int *a, mp_int *b);
+*/
+
+/* computes x/R == x (mod N) via Montgomery Reduction */
+/*
+int mp_montgomery_reduce(mp_int *a, mp_int *m, mp_digit mp);
+*/
+
+/* returns 1 if a is a valid DR modulus */
+/*
+int mp_dr_is_modulus(mp_int *a);
+*/
+
+/* sets the value of "d" required for mp_dr_reduce */
+/*
+void mp_dr_setup(mp_int *a, mp_digit *d);
+*/
+
+/* reduces a modulo b using the Diminished Radix method */
+/*
+int mp_dr_reduce(mp_int *a, mp_int *b, mp_digit mp);
+*/
+
+/* returns true if a can be reduced with mp_reduce_2k */
+/*
+int mp_reduce_is_2k(mp_int *a);
+*/
+
+/* determines k value for 2k reduction */
+/*
+int mp_reduce_2k_setup(mp_int *a, mp_digit *d);
+*/
+
+/* reduces a modulo b where b is of the form 2**p - k [0 <= a] */
+/*
+int mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d);
+*/
+
+/* returns true if a can be reduced with mp_reduce_2k_l */
+/*
+int mp_reduce_is_2k_l(mp_int *a);
+*/
+
+/* determines k value for 2k reduction */
+/*
+int mp_reduce_2k_setup_l(mp_int *a, mp_int *d);
+*/
+
+/* reduces a modulo b where b is of the form 2**p - k [0 <= a] */
+/*
+int mp_reduce_2k_l(mp_int *a, mp_int *n, mp_int *d);
+*/
+
+/* d = a**b (mod c) */
+/*
+int mp_exptmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
+*/
+
+/* ---> Primes <--- */
+
+/* number of primes */
+#ifdef MP_8BIT
+   #define PRIME_SIZE      31
+#else
+   #define PRIME_SIZE      256
+#endif
+
+/* table of first PRIME_SIZE primes */
+#if defined(BUILD_tcl) || !defined(_WIN32)
+MODULE_SCOPE const mp_digit ltm_prime_tab[];
+#endif
+
+/* result=1 if a is divisible by one of the first PRIME_SIZE primes */
+/*
+int mp_prime_is_divisible(mp_int *a, int *result);
+*/
+
+/* performs one Fermat test of "a" using base "b".
+ * Sets result to 0 if composite or 1 if probable prime
+ */
+/*
+int mp_prime_fermat(mp_int *a, mp_int *b, int *result);
+*/
+
+/* performs one Miller-Rabin test of "a" using base "b".
+ * Sets result to 0 if composite or 1 if probable prime
+ */
+/*
+int mp_prime_miller_rabin(mp_int *a, mp_int *b, int *result);
+*/
+
+/* This gives [for a given bit size] the number of trials required
+ * such that Miller-Rabin gives a prob of failure lower than 2^-96 
+ */
+/*
+int mp_prime_rabin_miller_trials(int size);
+*/
+
+/* performs t rounds of Miller-Rabin on "a" using the first
+ * t prime bases.  Also performs an initial sieve of trial
+ * division.  Determines if "a" is prime with probability
+ * of error no more than (1/4)**t.
+ *
+ * Sets result to 1 if probably prime, 0 otherwise
+ */
+/*
+int mp_prime_is_prime(mp_int *a, int t, int *result);
+*/
+
+/* finds the next prime after the number "a" using "t" trials
+ * of Miller-Rabin.
+ *
+ * bbs_style = 1 means the prime must be congruent to 3 mod 4
+ */
+/*
+int mp_prime_next_prime(mp_int *a, int t, int bbs_style);
+*/
+
+/* makes a truly random prime of a given size (bytes),
+ * call with bbs = 1 if you want it to be congruent to 3 mod 4 
+ *
+ * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
+ * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
+ * so it can be NULL
+ *
+ * The prime generated will be larger than 2^(8*size).
+ */
+#define mp_prime_random(a, t, size, bbs, cb, dat) mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?LTM_PRIME_BBS:0, cb, dat)
+
+/* makes a truly random prime of a given size (bits),
+ *
+ * Flags are as follows:
+ * 
+ *   LTM_PRIME_BBS      - make prime congruent to 3 mod 4
+ *   LTM_PRIME_SAFE     - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS)
+ *   LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero
+ *   LTM_PRIME_2MSB_ON  - make the 2nd highest bit one
+ *
+ * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
+ * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
+ * so it can be NULL
+ *
+ */
+/*
+int mp_prime_random_ex(mp_int *a, int t, int size, int flags, ltm_prime_callback cb, void *dat);
+*/
+
+/* ---> radix conversion <--- */
+/*
+int mp_count_bits(mp_int *a);
+*/
+
+/*
+int mp_unsigned_bin_size(mp_int *a);
+*/
+/*
+int mp_read_unsigned_bin(mp_int *a, const unsigned char *b, int c);
+*/
+/*
+int mp_to_unsigned_bin(mp_int *a, unsigned char *b);
+*/
+/*
+int mp_to_unsigned_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen);
+*/
+
+/*
+int mp_signed_bin_size(mp_int *a);
+*/
+/*
+int mp_read_signed_bin(mp_int *a, const unsigned char *b, int c);
+*/
+/*
+int mp_to_signed_bin(mp_int *a,  unsigned char *b);
+*/
+/*
+int mp_to_signed_bin_n (mp_int * a, unsigned char *b, unsigned long *outlen);
+*/
+
+/*
+int mp_read_radix(mp_int *a, const char *str, int radix);
+*/
+/*
+int mp_toradix(mp_int *a, char *str, int radix);
+*/
+/*
+int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen);
+*/
+/*
+int mp_radix_size(mp_int *a, int radix, int *size);
+*/
+
+/*
+int mp_fread(mp_int *a, int radix, FILE *stream);
+*/
+/*
+int mp_fwrite(mp_int *a, int radix, FILE *stream);
+*/
+
+#define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
+#define mp_raw_size(mp)           mp_signed_bin_size(mp)
+#define mp_toraw(mp, str)         mp_to_signed_bin((mp), (str))
+#define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
+#define mp_mag_size(mp)           mp_unsigned_bin_size(mp)
+#define mp_tomag(mp, str)         mp_to_unsigned_bin((mp), (str))
+
+#define mp_tobinary(M, S)  mp_toradix((M), (S), 2)
+#define mp_tooctal(M, S)   mp_toradix((M), (S), 8)
+#define mp_todecimal(M, S) mp_toradix((M), (S), 10)
+#define mp_tohex(M, S)     mp_toradix((M), (S), 16)
+
+/* lowlevel functions, do not call! */
+/*
+int s_mp_add(mp_int *a, mp_int *b, mp_int *c);
+*/
+/*
+int s_mp_sub(mp_int *a, mp_int *b, mp_int *c);
+*/
+#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
+/*
+int fast_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+*/
+/*
+int s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+*/
+/*
+int fast_s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+*/
+/*
+int s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
+*/
+/*
+int fast_s_mp_sqr(mp_int *a, mp_int *b);
+*/
+/*
+int s_mp_sqr(mp_int *a, mp_int *b);
+*/
+/*
+int mp_karatsuba_mul(mp_int *a, mp_int *b, mp_int *c);
+*/
+/*
+int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c);
+*/
+/*
+int mp_karatsuba_sqr(mp_int *a, mp_int *b);
+*/
+/*
+int mp_toom_sqr(mp_int *a, mp_int *b);
+*/
+/*
+int fast_mp_invmod(mp_int *a, mp_int *b, mp_int *c);
+*/
+/*
+int mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c);
+*/
+/*
+int fast_mp_montgomery_reduce(mp_int *a, mp_int *m, mp_digit mp);
+*/
+/*
+int mp_exptmod_fast(mp_int *G, mp_int *X, mp_int *P, mp_int *Y, int mode);
+*/
+/*
+int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int mode);
+*/
+/*
+void bn_reverse(unsigned char *s, int len);
+*/
+
+#if defined(BUILD_tcl) || !defined(_WIN32)
+MODULE_SCOPE const char *mp_s_rmap;
+#endif
+
+#ifdef __cplusplus
+   }
+#endif
+
+#endif
diff --git a/generic/tclTomMathDecls.h b/generic/tclTomMathDecls.h
new file mode 100644
index 0000000..04a23f3
--- /dev/null
+++ b/generic/tclTomMathDecls.h
@@ -0,0 +1,819 @@
+/*
+ *----------------------------------------------------------------------
+ *
+ * tclTomMathDecls.h --
+ *
+ *	This file contains the declarations for the 'libtommath'
+ *	functions that are exported by the Tcl library.
+ *
+ * Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef _TCLTOMMATHDECLS
+#define _TCLTOMMATHDECLS
+
+#include "tcl.h"
+
+/*
+ * Define the version of the Stubs table that's exported for tommath
+ */
+
+#define TCLTOMMATH_EPOCH 0
+#define TCLTOMMATH_REVISION 0
+
+#define Tcl_TomMath_InitStubs(interp,version) \
+    (TclTomMathInitializeStubs((interp),(version),\
+                               TCLTOMMATH_EPOCH,TCLTOMMATH_REVISION))
+
+/* Define custom memory allocation for libtommath */
+
+/* MODULE_SCOPE void* TclBNAlloc( size_t ); */
+#define TclBNAlloc(s) ((void*)ckalloc((size_t)(s)))
+/* MODULE_SCOPE void* TclBNRealloc( void*, size_t ); */
+#define TclBNRealloc(x,s) ((void*)ckrealloc((char*)(x),(size_t)(s)))
+/* MODULE_SCOPE void  TclBNFree( void* ); */
+#define TclBNFree(x) (ckfree((char*)(x)))
+/* MODULE_SCOPE void* TclBNCalloc( size_t, size_t ); */
+/* unused - no macro */
+
+#define XMALLOC(x) TclBNAlloc(x)
+#define XFREE(x) TclBNFree(x)
+#define XREALLOC(x,n) TclBNRealloc(x,n)
+#define XCALLOC(n,x) TclBNCalloc(n,x)
+
+/* Rename the global symbols in libtommath to avoid linkage conflicts */
+
+#define KARATSUBA_MUL_CUTOFF TclBNKaratsubaMulCutoff
+#define KARATSUBA_SQR_CUTOFF TclBNKaratsubaSqrCutoff
+#define TOOM_MUL_CUTOFF TclBNToomMulCutoff
+#define TOOM_SQR_CUTOFF TclBNToomSqrCutoff
+
+#define bn_reverse TclBN_reverse
+#define fast_s_mp_mul_digs TclBN_fast_s_mp_mul_digs
+#define fast_s_mp_sqr TclBN_fast_s_mp_sqr
+#define mp_add TclBN_mp_add
+#define mp_add_d TclBN_mp_add_d
+#define mp_and TclBN_mp_and
+#define mp_clamp TclBN_mp_clamp
+#define mp_clear TclBN_mp_clear
+#define mp_clear_multi TclBN_mp_clear_multi
+#define mp_cmp TclBN_mp_cmp
+#define mp_cmp_d TclBN_mp_cmp_d
+#define mp_cmp_mag TclBN_mp_cmp_mag
+#define mp_cnt_lsb TclBN_mp_cnt_lsb
+#define mp_copy TclBN_mp_copy
+#define mp_count_bits TclBN_mp_count_bits
+#define mp_div TclBN_mp_div
+#define mp_div_2 TclBN_mp_div_2
+#define mp_div_2d TclBN_mp_div_2d
+#define mp_div_3 TclBN_mp_div_3
+#define mp_div_d TclBN_mp_div_d
+#define mp_exch TclBN_mp_exch
+#define mp_expt_d TclBN_mp_expt_d
+#define mp_grow TclBN_mp_grow
+#define mp_init TclBN_mp_init
+#define mp_init_copy TclBN_mp_init_copy
+#define mp_init_multi TclBN_mp_init_multi
+#define mp_init_set TclBN_mp_init_set
+#define mp_init_set_int TclBN_mp_init_set_int
+#define mp_init_size TclBN_mp_init_size
+#define mp_karatsuba_mul TclBN_mp_karatsuba_mul
+#define mp_karatsuba_sqr TclBN_mp_karatsuba_sqr
+#define mp_lshd TclBN_mp_lshd
+#define mp_mod TclBN_mp_mod
+#define mp_mod_2d TclBN_mp_mod_2d
+#define mp_mul TclBN_mp_mul
+#define mp_mul_2 TclBN_mp_mul_2
+#define mp_mul_2d TclBN_mp_mul_2d
+#define mp_mul_d TclBN_mp_mul_d
+#define mp_neg TclBN_mp_neg
+#define mp_or TclBN_mp_or
+#define mp_radix_size TclBN_mp_radix_size
+#define mp_read_radix TclBN_mp_read_radix
+#define mp_rshd TclBN_mp_rshd
+#define mp_s_rmap TclBNMpSRmap
+#define mp_set TclBN_mp_set
+#define mp_set_int TclBN_mp_set_int
+#define mp_shrink TclBN_mp_shrink
+#define mp_sqr TclBN_mp_sqr
+#define mp_sqrt TclBN_mp_sqrt
+#define mp_sub TclBN_mp_sub
+#define mp_sub_d TclBN_mp_sub_d
+#define mp_to_unsigned_bin TclBN_mp_to_unsigned_bin
+#define mp_to_unsigned_bin_n TclBN_mp_to_unsigned_bin_n
+#define mp_toom_mul TclBN_mp_toom_mul
+#define mp_toom_sqr TclBN_mp_toom_sqr
+#define mp_toradix_n TclBN_mp_toradix_n
+#define mp_unsigned_bin_size TclBN_mp_unsigned_bin_size
+#define mp_xor TclBN_mp_xor
+#define mp_zero TclBN_mp_zero
+#define s_mp_add TclBN_s_mp_add
+#define s_mp_mul_digs TclBN_s_mp_mul_digs
+#define s_mp_sqr TclBN_s_mp_sqr
+#define s_mp_sub TclBN_s_mp_sub
+
+#undef TCL_STORAGE_CLASS
+#ifdef BUILD_tcl
+#   define TCL_STORAGE_CLASS DLLEXPORT
+#else
+#   ifdef USE_TCL_STUBS
+#      define TCL_STORAGE_CLASS
+#   else
+#      define TCL_STORAGE_CLASS DLLIMPORT
+#   endif
+#endif
+
+/*
+ * WARNING: This file is automatically generated by the tools/genStubs.tcl
+ * script.  Any modifications to the function declarations below should be made
+ * in the generic/tclInt.decls script.
+ */
+
+/* !BEGIN!: Do not edit below this line. */
+
+/*
+ * Exported function declarations:
+ */
+
+#ifndef TclBN_epoch_TCL_DECLARED
+#define TclBN_epoch_TCL_DECLARED
+/* 0 */
+EXTERN int		TclBN_epoch(void);
+#endif
+#ifndef TclBN_revision_TCL_DECLARED
+#define TclBN_revision_TCL_DECLARED
+/* 1 */
+EXTERN int		TclBN_revision(void);
+#endif
+#ifndef TclBN_mp_add_TCL_DECLARED
+#define TclBN_mp_add_TCL_DECLARED
+/* 2 */
+EXTERN int		TclBN_mp_add(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_add_d_TCL_DECLARED
+#define TclBN_mp_add_d_TCL_DECLARED
+/* 3 */
+EXTERN int		TclBN_mp_add_d(mp_int *a, mp_digit b, mp_int *c);
+#endif
+#ifndef TclBN_mp_and_TCL_DECLARED
+#define TclBN_mp_and_TCL_DECLARED
+/* 4 */
+EXTERN int		TclBN_mp_and(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_clamp_TCL_DECLARED
+#define TclBN_mp_clamp_TCL_DECLARED
+/* 5 */
+EXTERN void		TclBN_mp_clamp(mp_int *a);
+#endif
+#ifndef TclBN_mp_clear_TCL_DECLARED
+#define TclBN_mp_clear_TCL_DECLARED
+/* 6 */
+EXTERN void		TclBN_mp_clear(mp_int *a);
+#endif
+#ifndef TclBN_mp_clear_multi_TCL_DECLARED
+#define TclBN_mp_clear_multi_TCL_DECLARED
+/* 7 */
+EXTERN void		TclBN_mp_clear_multi(mp_int *a, ...);
+#endif
+#ifndef TclBN_mp_cmp_TCL_DECLARED
+#define TclBN_mp_cmp_TCL_DECLARED
+/* 8 */
+EXTERN int		TclBN_mp_cmp(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_cmp_d_TCL_DECLARED
+#define TclBN_mp_cmp_d_TCL_DECLARED
+/* 9 */
+EXTERN int		TclBN_mp_cmp_d(mp_int *a, mp_digit b);
+#endif
+#ifndef TclBN_mp_cmp_mag_TCL_DECLARED
+#define TclBN_mp_cmp_mag_TCL_DECLARED
+/* 10 */
+EXTERN int		TclBN_mp_cmp_mag(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_copy_TCL_DECLARED
+#define TclBN_mp_copy_TCL_DECLARED
+/* 11 */
+EXTERN int		TclBN_mp_copy(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_count_bits_TCL_DECLARED
+#define TclBN_mp_count_bits_TCL_DECLARED
+/* 12 */
+EXTERN int		TclBN_mp_count_bits(mp_int *a);
+#endif
+#ifndef TclBN_mp_div_TCL_DECLARED
+#define TclBN_mp_div_TCL_DECLARED
+/* 13 */
+EXTERN int		TclBN_mp_div(mp_int *a, mp_int *b, mp_int *q,
+				mp_int *r);
+#endif
+#ifndef TclBN_mp_div_d_TCL_DECLARED
+#define TclBN_mp_div_d_TCL_DECLARED
+/* 14 */
+EXTERN int		TclBN_mp_div_d(mp_int *a, mp_digit b, mp_int *q,
+				mp_digit *r);
+#endif
+#ifndef TclBN_mp_div_2_TCL_DECLARED
+#define TclBN_mp_div_2_TCL_DECLARED
+/* 15 */
+EXTERN int		TclBN_mp_div_2(mp_int *a, mp_int *q);
+#endif
+#ifndef TclBN_mp_div_2d_TCL_DECLARED
+#define TclBN_mp_div_2d_TCL_DECLARED
+/* 16 */
+EXTERN int		TclBN_mp_div_2d(mp_int *a, int b, mp_int *q,
+				mp_int *r);
+#endif
+#ifndef TclBN_mp_div_3_TCL_DECLARED
+#define TclBN_mp_div_3_TCL_DECLARED
+/* 17 */
+EXTERN int		TclBN_mp_div_3(mp_int *a, mp_int *q, mp_digit *r);
+#endif
+#ifndef TclBN_mp_exch_TCL_DECLARED
+#define TclBN_mp_exch_TCL_DECLARED
+/* 18 */
+EXTERN void		TclBN_mp_exch(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_expt_d_TCL_DECLARED
+#define TclBN_mp_expt_d_TCL_DECLARED
+/* 19 */
+EXTERN int		TclBN_mp_expt_d(mp_int *a, mp_digit b, mp_int *c);
+#endif
+#ifndef TclBN_mp_grow_TCL_DECLARED
+#define TclBN_mp_grow_TCL_DECLARED
+/* 20 */
+EXTERN int		TclBN_mp_grow(mp_int *a, int size);
+#endif
+#ifndef TclBN_mp_init_TCL_DECLARED
+#define TclBN_mp_init_TCL_DECLARED
+/* 21 */
+EXTERN int		TclBN_mp_init(mp_int *a);
+#endif
+#ifndef TclBN_mp_init_copy_TCL_DECLARED
+#define TclBN_mp_init_copy_TCL_DECLARED
+/* 22 */
+EXTERN int		TclBN_mp_init_copy(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_init_multi_TCL_DECLARED
+#define TclBN_mp_init_multi_TCL_DECLARED
+/* 23 */
+EXTERN int		TclBN_mp_init_multi(mp_int *a, ...);
+#endif
+#ifndef TclBN_mp_init_set_TCL_DECLARED
+#define TclBN_mp_init_set_TCL_DECLARED
+/* 24 */
+EXTERN int		TclBN_mp_init_set(mp_int *a, mp_digit b);
+#endif
+#ifndef TclBN_mp_init_size_TCL_DECLARED
+#define TclBN_mp_init_size_TCL_DECLARED
+/* 25 */
+EXTERN int		TclBN_mp_init_size(mp_int *a, int size);
+#endif
+#ifndef TclBN_mp_lshd_TCL_DECLARED
+#define TclBN_mp_lshd_TCL_DECLARED
+/* 26 */
+EXTERN int		TclBN_mp_lshd(mp_int *a, int shift);
+#endif
+#ifndef TclBN_mp_mod_TCL_DECLARED
+#define TclBN_mp_mod_TCL_DECLARED
+/* 27 */
+EXTERN int		TclBN_mp_mod(mp_int *a, mp_int *b, mp_int *r);
+#endif
+#ifndef TclBN_mp_mod_2d_TCL_DECLARED
+#define TclBN_mp_mod_2d_TCL_DECLARED
+/* 28 */
+EXTERN int		TclBN_mp_mod_2d(mp_int *a, int b, mp_int *r);
+#endif
+#ifndef TclBN_mp_mul_TCL_DECLARED
+#define TclBN_mp_mul_TCL_DECLARED
+/* 29 */
+EXTERN int		TclBN_mp_mul(mp_int *a, mp_int *b, mp_int *p);
+#endif
+#ifndef TclBN_mp_mul_d_TCL_DECLARED
+#define TclBN_mp_mul_d_TCL_DECLARED
+/* 30 */
+EXTERN int		TclBN_mp_mul_d(mp_int *a, mp_digit b, mp_int *p);
+#endif
+#ifndef TclBN_mp_mul_2_TCL_DECLARED
+#define TclBN_mp_mul_2_TCL_DECLARED
+/* 31 */
+EXTERN int		TclBN_mp_mul_2(mp_int *a, mp_int *p);
+#endif
+#ifndef TclBN_mp_mul_2d_TCL_DECLARED
+#define TclBN_mp_mul_2d_TCL_DECLARED
+/* 32 */
+EXTERN int		TclBN_mp_mul_2d(mp_int *a, int d, mp_int *p);
+#endif
+#ifndef TclBN_mp_neg_TCL_DECLARED
+#define TclBN_mp_neg_TCL_DECLARED
+/* 33 */
+EXTERN int		TclBN_mp_neg(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_or_TCL_DECLARED
+#define TclBN_mp_or_TCL_DECLARED
+/* 34 */
+EXTERN int		TclBN_mp_or(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_radix_size_TCL_DECLARED
+#define TclBN_mp_radix_size_TCL_DECLARED
+/* 35 */
+EXTERN int		TclBN_mp_radix_size(mp_int *a, int radix, int *size);
+#endif
+#ifndef TclBN_mp_read_radix_TCL_DECLARED
+#define TclBN_mp_read_radix_TCL_DECLARED
+/* 36 */
+EXTERN int		TclBN_mp_read_radix(mp_int *a, CONST char *str,
+				int radix);
+#endif
+#ifndef TclBN_mp_rshd_TCL_DECLARED
+#define TclBN_mp_rshd_TCL_DECLARED
+/* 37 */
+EXTERN void		TclBN_mp_rshd(mp_int *a, int shift);
+#endif
+#ifndef TclBN_mp_shrink_TCL_DECLARED
+#define TclBN_mp_shrink_TCL_DECLARED
+/* 38 */
+EXTERN int		TclBN_mp_shrink(mp_int *a);
+#endif
+#ifndef TclBN_mp_set_TCL_DECLARED
+#define TclBN_mp_set_TCL_DECLARED
+/* 39 */
+EXTERN void		TclBN_mp_set(mp_int *a, mp_digit b);
+#endif
+#ifndef TclBN_mp_sqr_TCL_DECLARED
+#define TclBN_mp_sqr_TCL_DECLARED
+/* 40 */
+EXTERN int		TclBN_mp_sqr(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_sqrt_TCL_DECLARED
+#define TclBN_mp_sqrt_TCL_DECLARED
+/* 41 */
+EXTERN int		TclBN_mp_sqrt(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_sub_TCL_DECLARED
+#define TclBN_mp_sub_TCL_DECLARED
+/* 42 */
+EXTERN int		TclBN_mp_sub(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_sub_d_TCL_DECLARED
+#define TclBN_mp_sub_d_TCL_DECLARED
+/* 43 */
+EXTERN int		TclBN_mp_sub_d(mp_int *a, mp_digit b, mp_int *c);
+#endif
+#ifndef TclBN_mp_to_unsigned_bin_TCL_DECLARED
+#define TclBN_mp_to_unsigned_bin_TCL_DECLARED
+/* 44 */
+EXTERN int		TclBN_mp_to_unsigned_bin(mp_int *a, unsigned char *b);
+#endif
+#ifndef TclBN_mp_to_unsigned_bin_n_TCL_DECLARED
+#define TclBN_mp_to_unsigned_bin_n_TCL_DECLARED
+/* 45 */
+EXTERN int		TclBN_mp_to_unsigned_bin_n(mp_int *a,
+				unsigned char *b, unsigned long *outlen);
+#endif
+#ifndef TclBN_mp_toradix_n_TCL_DECLARED
+#define TclBN_mp_toradix_n_TCL_DECLARED
+/* 46 */
+EXTERN int		TclBN_mp_toradix_n(mp_int *a, char *str, int radix,
+				int maxlen);
+#endif
+#ifndef TclBN_mp_unsigned_bin_size_TCL_DECLARED
+#define TclBN_mp_unsigned_bin_size_TCL_DECLARED
+/* 47 */
+EXTERN int		TclBN_mp_unsigned_bin_size(mp_int *a);
+#endif
+#ifndef TclBN_mp_xor_TCL_DECLARED
+#define TclBN_mp_xor_TCL_DECLARED
+/* 48 */
+EXTERN int		TclBN_mp_xor(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_zero_TCL_DECLARED
+#define TclBN_mp_zero_TCL_DECLARED
+/* 49 */
+EXTERN void		TclBN_mp_zero(mp_int *a);
+#endif
+#ifndef TclBN_reverse_TCL_DECLARED
+#define TclBN_reverse_TCL_DECLARED
+/* 50 */
+EXTERN void		TclBN_reverse(unsigned char *s, int len);
+#endif
+#ifndef TclBN_fast_s_mp_mul_digs_TCL_DECLARED
+#define TclBN_fast_s_mp_mul_digs_TCL_DECLARED
+/* 51 */
+EXTERN int		TclBN_fast_s_mp_mul_digs(mp_int *a, mp_int *b,
+				mp_int *c, int digs);
+#endif
+#ifndef TclBN_fast_s_mp_sqr_TCL_DECLARED
+#define TclBN_fast_s_mp_sqr_TCL_DECLARED
+/* 52 */
+EXTERN int		TclBN_fast_s_mp_sqr(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_karatsuba_mul_TCL_DECLARED
+#define TclBN_mp_karatsuba_mul_TCL_DECLARED
+/* 53 */
+EXTERN int		TclBN_mp_karatsuba_mul(mp_int *a, mp_int *b,
+				mp_int *c);
+#endif
+#ifndef TclBN_mp_karatsuba_sqr_TCL_DECLARED
+#define TclBN_mp_karatsuba_sqr_TCL_DECLARED
+/* 54 */
+EXTERN int		TclBN_mp_karatsuba_sqr(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_mp_toom_mul_TCL_DECLARED
+#define TclBN_mp_toom_mul_TCL_DECLARED
+/* 55 */
+EXTERN int		TclBN_mp_toom_mul(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_toom_sqr_TCL_DECLARED
+#define TclBN_mp_toom_sqr_TCL_DECLARED
+/* 56 */
+EXTERN int		TclBN_mp_toom_sqr(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_s_mp_add_TCL_DECLARED
+#define TclBN_s_mp_add_TCL_DECLARED
+/* 57 */
+EXTERN int		TclBN_s_mp_add(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_s_mp_mul_digs_TCL_DECLARED
+#define TclBN_s_mp_mul_digs_TCL_DECLARED
+/* 58 */
+EXTERN int		TclBN_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c,
+				int digs);
+#endif
+#ifndef TclBN_s_mp_sqr_TCL_DECLARED
+#define TclBN_s_mp_sqr_TCL_DECLARED
+/* 59 */
+EXTERN int		TclBN_s_mp_sqr(mp_int *a, mp_int *b);
+#endif
+#ifndef TclBN_s_mp_sub_TCL_DECLARED
+#define TclBN_s_mp_sub_TCL_DECLARED
+/* 60 */
+EXTERN int		TclBN_s_mp_sub(mp_int *a, mp_int *b, mp_int *c);
+#endif
+#ifndef TclBN_mp_init_set_int_TCL_DECLARED
+#define TclBN_mp_init_set_int_TCL_DECLARED
+/* 61 */
+EXTERN int		TclBN_mp_init_set_int(mp_int *a, unsigned long i);
+#endif
+#ifndef TclBN_mp_set_int_TCL_DECLARED
+#define TclBN_mp_set_int_TCL_DECLARED
+/* 62 */
+EXTERN int		TclBN_mp_set_int(mp_int *a, unsigned long i);
+#endif
+#ifndef TclBN_mp_cnt_lsb_TCL_DECLARED
+#define TclBN_mp_cnt_lsb_TCL_DECLARED
+/* 63 */
+EXTERN int		TclBN_mp_cnt_lsb(mp_int *a);
+#endif
+
+typedef struct TclTomMathStubs {
+    int magic;
+    struct TclTomMathStubHooks *hooks;
+
+    int (*tclBN_epoch) (void); /* 0 */
+    int (*tclBN_revision) (void); /* 1 */
+    int (*tclBN_mp_add) (mp_int *a, mp_int *b, mp_int *c); /* 2 */
+    int (*tclBN_mp_add_d) (mp_int *a, mp_digit b, mp_int *c); /* 3 */
+    int (*tclBN_mp_and) (mp_int *a, mp_int *b, mp_int *c); /* 4 */
+    void (*tclBN_mp_clamp) (mp_int *a); /* 5 */
+    void (*tclBN_mp_clear) (mp_int *a); /* 6 */
+    void (*tclBN_mp_clear_multi) (mp_int *a, ...); /* 7 */
+    int (*tclBN_mp_cmp) (mp_int *a, mp_int *b); /* 8 */
+    int (*tclBN_mp_cmp_d) (mp_int *a, mp_digit b); /* 9 */
+    int (*tclBN_mp_cmp_mag) (mp_int *a, mp_int *b); /* 10 */
+    int (*tclBN_mp_copy) (mp_int *a, mp_int *b); /* 11 */
+    int (*tclBN_mp_count_bits) (mp_int *a); /* 12 */
+    int (*tclBN_mp_div) (mp_int *a, mp_int *b, mp_int *q, mp_int *r); /* 13 */
+    int (*tclBN_mp_div_d) (mp_int *a, mp_digit b, mp_int *q, mp_digit *r); /* 14 */
+    int (*tclBN_mp_div_2) (mp_int *a, mp_int *q); /* 15 */
+    int (*tclBN_mp_div_2d) (mp_int *a, int b, mp_int *q, mp_int *r); /* 16 */
+    int (*tclBN_mp_div_3) (mp_int *a, mp_int *q, mp_digit *r); /* 17 */
+    void (*tclBN_mp_exch) (mp_int *a, mp_int *b); /* 18 */
+    int (*tclBN_mp_expt_d) (mp_int *a, mp_digit b, mp_int *c); /* 19 */
+    int (*tclBN_mp_grow) (mp_int *a, int size); /* 20 */
+    int (*tclBN_mp_init) (mp_int *a); /* 21 */
+    int (*tclBN_mp_init_copy) (mp_int *a, mp_int *b); /* 22 */
+    int (*tclBN_mp_init_multi) (mp_int *a, ...); /* 23 */
+    int (*tclBN_mp_init_set) (mp_int *a, mp_digit b); /* 24 */
+    int (*tclBN_mp_init_size) (mp_int *a, int size); /* 25 */
+    int (*tclBN_mp_lshd) (mp_int *a, int shift); /* 26 */
+    int (*tclBN_mp_mod) (mp_int *a, mp_int *b, mp_int *r); /* 27 */
+    int (*tclBN_mp_mod_2d) (mp_int *a, int b, mp_int *r); /* 28 */
+    int (*tclBN_mp_mul) (mp_int *a, mp_int *b, mp_int *p); /* 29 */
+    int (*tclBN_mp_mul_d) (mp_int *a, mp_digit b, mp_int *p); /* 30 */
+    int (*tclBN_mp_mul_2) (mp_int *a, mp_int *p); /* 31 */
+    int (*tclBN_mp_mul_2d) (mp_int *a, int d, mp_int *p); /* 32 */
+    int (*tclBN_mp_neg) (mp_int *a, mp_int *b); /* 33 */
+    int (*tclBN_mp_or) (mp_int *a, mp_int *b, mp_int *c); /* 34 */
+    int (*tclBN_mp_radix_size) (mp_int *a, int radix, int *size); /* 35 */
+    int (*tclBN_mp_read_radix) (mp_int *a, CONST char *str, int radix); /* 36 */
+    void (*tclBN_mp_rshd) (mp_int *a, int shift); /* 37 */
+    int (*tclBN_mp_shrink) (mp_int *a); /* 38 */
+    void (*tclBN_mp_set) (mp_int *a, mp_digit b); /* 39 */
+    int (*tclBN_mp_sqr) (mp_int *a, mp_int *b); /* 40 */
+    int (*tclBN_mp_sqrt) (mp_int *a, mp_int *b); /* 41 */
+    int (*tclBN_mp_sub) (mp_int *a, mp_int *b, mp_int *c); /* 42 */
+    int (*tclBN_mp_sub_d) (mp_int *a, mp_digit b, mp_int *c); /* 43 */
+    int (*tclBN_mp_to_unsigned_bin) (mp_int *a, unsigned char *b); /* 44 */
+    int (*tclBN_mp_to_unsigned_bin_n) (mp_int *a, unsigned char *b, unsigned long *outlen); /* 45 */
+    int (*tclBN_mp_toradix_n) (mp_int *a, char *str, int radix, int maxlen); /* 46 */
+    int (*tclBN_mp_unsigned_bin_size) (mp_int *a); /* 47 */
+    int (*tclBN_mp_xor) (mp_int *a, mp_int *b, mp_int *c); /* 48 */
+    void (*tclBN_mp_zero) (mp_int *a); /* 49 */
+    void (*tclBN_reverse) (unsigned char *s, int len); /* 50 */
+    int (*tclBN_fast_s_mp_mul_digs) (mp_int *a, mp_int *b, mp_int *c, int digs); /* 51 */
+    int (*tclBN_fast_s_mp_sqr) (mp_int *a, mp_int *b); /* 52 */
+    int (*tclBN_mp_karatsuba_mul) (mp_int *a, mp_int *b, mp_int *c); /* 53 */
+    int (*tclBN_mp_karatsuba_sqr) (mp_int *a, mp_int *b); /* 54 */
+    int (*tclBN_mp_toom_mul) (mp_int *a, mp_int *b, mp_int *c); /* 55 */
+    int (*tclBN_mp_toom_sqr) (mp_int *a, mp_int *b); /* 56 */
+    int (*tclBN_s_mp_add) (mp_int *a, mp_int *b, mp_int *c); /* 57 */
+    int (*tclBN_s_mp_mul_digs) (mp_int *a, mp_int *b, mp_int *c, int digs); /* 58 */
+    int (*tclBN_s_mp_sqr) (mp_int *a, mp_int *b); /* 59 */
+    int (*tclBN_s_mp_sub) (mp_int *a, mp_int *b, mp_int *c); /* 60 */
+    int (*tclBN_mp_init_set_int) (mp_int *a, unsigned long i); /* 61 */
+    int (*tclBN_mp_set_int) (mp_int *a, unsigned long i); /* 62 */
+    int (*tclBN_mp_cnt_lsb) (mp_int *a); /* 63 */
+} TclTomMathStubs;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+extern TclTomMathStubs *tclTomMathStubsPtr;
+#ifdef __cplusplus
+}
+#endif
+
+#if defined(USE_TCL_STUBS) && !defined(USE_TCL_STUB_PROCS)
+
+/*
+ * Inline function declarations:
+ */
+
+#ifndef TclBN_epoch
+#define TclBN_epoch \
+	(tclTomMathStubsPtr->tclBN_epoch) /* 0 */
+#endif
+#ifndef TclBN_revision
+#define TclBN_revision \
+	(tclTomMathStubsPtr->tclBN_revision) /* 1 */
+#endif
+#ifndef TclBN_mp_add
+#define TclBN_mp_add \
+	(tclTomMathStubsPtr->tclBN_mp_add) /* 2 */
+#endif
+#ifndef TclBN_mp_add_d
+#define TclBN_mp_add_d \
+	(tclTomMathStubsPtr->tclBN_mp_add_d) /* 3 */
+#endif
+#ifndef TclBN_mp_and
+#define TclBN_mp_and \
+	(tclTomMathStubsPtr->tclBN_mp_and) /* 4 */
+#endif
+#ifndef TclBN_mp_clamp
+#define TclBN_mp_clamp \
+	(tclTomMathStubsPtr->tclBN_mp_clamp) /* 5 */
+#endif
+#ifndef TclBN_mp_clear
+#define TclBN_mp_clear \
+	(tclTomMathStubsPtr->tclBN_mp_clear) /* 6 */
+#endif
+#ifndef TclBN_mp_clear_multi
+#define TclBN_mp_clear_multi \
+	(tclTomMathStubsPtr->tclBN_mp_clear_multi) /* 7 */
+#endif
+#ifndef TclBN_mp_cmp
+#define TclBN_mp_cmp \
+	(tclTomMathStubsPtr->tclBN_mp_cmp) /* 8 */
+#endif
+#ifndef TclBN_mp_cmp_d
+#define TclBN_mp_cmp_d \
+	(tclTomMathStubsPtr->tclBN_mp_cmp_d) /* 9 */
+#endif
+#ifndef TclBN_mp_cmp_mag
+#define TclBN_mp_cmp_mag \
+	(tclTomMathStubsPtr->tclBN_mp_cmp_mag) /* 10 */
+#endif
+#ifndef TclBN_mp_copy
+#define TclBN_mp_copy \
+	(tclTomMathStubsPtr->tclBN_mp_copy) /* 11 */
+#endif
+#ifndef TclBN_mp_count_bits
+#define TclBN_mp_count_bits \
+	(tclTomMathStubsPtr->tclBN_mp_count_bits) /* 12 */
+#endif
+#ifndef TclBN_mp_div
+#define TclBN_mp_div \
+	(tclTomMathStubsPtr->tclBN_mp_div) /* 13 */
+#endif
+#ifndef TclBN_mp_div_d
+#define TclBN_mp_div_d \
+	(tclTomMathStubsPtr->tclBN_mp_div_d) /* 14 */
+#endif
+#ifndef TclBN_mp_div_2
+#define TclBN_mp_div_2 \
+	(tclTomMathStubsPtr->tclBN_mp_div_2) /* 15 */
+#endif
+#ifndef TclBN_mp_div_2d
+#define TclBN_mp_div_2d \
+	(tclTomMathStubsPtr->tclBN_mp_div_2d) /* 16 */
+#endif
+#ifndef TclBN_mp_div_3
+#define TclBN_mp_div_3 \
+	(tclTomMathStubsPtr->tclBN_mp_div_3) /* 17 */
+#endif
+#ifndef TclBN_mp_exch
+#define TclBN_mp_exch \
+	(tclTomMathStubsPtr->tclBN_mp_exch) /* 18 */
+#endif
+#ifndef TclBN_mp_expt_d
+#define TclBN_mp_expt_d \
+	(tclTomMathStubsPtr->tclBN_mp_expt_d) /* 19 */
+#endif
+#ifndef TclBN_mp_grow
+#define TclBN_mp_grow \
+	(tclTomMathStubsPtr->tclBN_mp_grow) /* 20 */
+#endif
+#ifndef TclBN_mp_init
+#define TclBN_mp_init \
+	(tclTomMathStubsPtr->tclBN_mp_init) /* 21 */
+#endif
+#ifndef TclBN_mp_init_copy
+#define TclBN_mp_init_copy \
+	(tclTomMathStubsPtr->tclBN_mp_init_copy) /* 22 */
+#endif
+#ifndef TclBN_mp_init_multi
+#define TclBN_mp_init_multi \
+	(tclTomMathStubsPtr->tclBN_mp_init_multi) /* 23 */
+#endif
+#ifndef TclBN_mp_init_set
+#define TclBN_mp_init_set \
+	(tclTomMathStubsPtr->tclBN_mp_init_set) /* 24 */
+#endif
+#ifndef TclBN_mp_init_size
+#define TclBN_mp_init_size \
+	(tclTomMathStubsPtr->tclBN_mp_init_size) /* 25 */
+#endif
+#ifndef TclBN_mp_lshd
+#define TclBN_mp_lshd \
+	(tclTomMathStubsPtr->tclBN_mp_lshd) /* 26 */
+#endif
+#ifndef TclBN_mp_mod
+#define TclBN_mp_mod \
+	(tclTomMathStubsPtr->tclBN_mp_mod) /* 27 */
+#endif
+#ifndef TclBN_mp_mod_2d
+#define TclBN_mp_mod_2d \
+	(tclTomMathStubsPtr->tclBN_mp_mod_2d) /* 28 */
+#endif
+#ifndef TclBN_mp_mul
+#define TclBN_mp_mul \
+	(tclTomMathStubsPtr->tclBN_mp_mul) /* 29 */
+#endif
+#ifndef TclBN_mp_mul_d
+#define TclBN_mp_mul_d \
+	(tclTomMathStubsPtr->tclBN_mp_mul_d) /* 30 */
+#endif
+#ifndef TclBN_mp_mul_2
+#define TclBN_mp_mul_2 \
+	(tclTomMathStubsPtr->tclBN_mp_mul_2) /* 31 */
+#endif
+#ifndef TclBN_mp_mul_2d
+#define TclBN_mp_mul_2d \
+	(tclTomMathStubsPtr->tclBN_mp_mul_2d) /* 32 */
+#endif
+#ifndef TclBN_mp_neg
+#define TclBN_mp_neg \
+	(tclTomMathStubsPtr->tclBN_mp_neg) /* 33 */
+#endif
+#ifndef TclBN_mp_or
+#define TclBN_mp_or \
+	(tclTomMathStubsPtr->tclBN_mp_or) /* 34 */
+#endif
+#ifndef TclBN_mp_radix_size
+#define TclBN_mp_radix_size \
+	(tclTomMathStubsPtr->tclBN_mp_radix_size) /* 35 */
+#endif
+#ifndef TclBN_mp_read_radix
+#define TclBN_mp_read_radix \
+	(tclTomMathStubsPtr->tclBN_mp_read_radix) /* 36 */
+#endif
+#ifndef TclBN_mp_rshd
+#define TclBN_mp_rshd \
+	(tclTomMathStubsPtr->tclBN_mp_rshd) /* 37 */
+#endif
+#ifndef TclBN_mp_shrink
+#define TclBN_mp_shrink \
+	(tclTomMathStubsPtr->tclBN_mp_shrink) /* 38 */
+#endif
+#ifndef TclBN_mp_set
+#define TclBN_mp_set \
+	(tclTomMathStubsPtr->tclBN_mp_set) /* 39 */
+#endif
+#ifndef TclBN_mp_sqr
+#define TclBN_mp_sqr \
+	(tclTomMathStubsPtr->tclBN_mp_sqr) /* 40 */
+#endif
+#ifndef TclBN_mp_sqrt
+#define TclBN_mp_sqrt \
+	(tclTomMathStubsPtr->tclBN_mp_sqrt) /* 41 */
+#endif
+#ifndef TclBN_mp_sub
+#define TclBN_mp_sub \
+	(tclTomMathStubsPtr->tclBN_mp_sub) /* 42 */
+#endif
+#ifndef TclBN_mp_sub_d
+#define TclBN_mp_sub_d \
+	(tclTomMathStubsPtr->tclBN_mp_sub_d) /* 43 */
+#endif
+#ifndef TclBN_mp_to_unsigned_bin
+#define TclBN_mp_to_unsigned_bin \
+	(tclTomMathStubsPtr->tclBN_mp_to_unsigned_bin) /* 44 */
+#endif
+#ifndef TclBN_mp_to_unsigned_bin_n
+#define TclBN_mp_to_unsigned_bin_n \
+	(tclTomMathStubsPtr->tclBN_mp_to_unsigned_bin_n) /* 45 */
+#endif
+#ifndef TclBN_mp_toradix_n
+#define TclBN_mp_toradix_n \
+	(tclTomMathStubsPtr->tclBN_mp_toradix_n) /* 46 */
+#endif
+#ifndef TclBN_mp_unsigned_bin_size
+#define TclBN_mp_unsigned_bin_size \
+	(tclTomMathStubsPtr->tclBN_mp_unsigned_bin_size) /* 47 */
+#endif
+#ifndef TclBN_mp_xor
+#define TclBN_mp_xor \
+	(tclTomMathStubsPtr->tclBN_mp_xor) /* 48 */
+#endif
+#ifndef TclBN_mp_zero
+#define TclBN_mp_zero \
+	(tclTomMathStubsPtr->tclBN_mp_zero) /* 49 */
+#endif
+#ifndef TclBN_reverse
+#define TclBN_reverse \
+	(tclTomMathStubsPtr->tclBN_reverse) /* 50 */
+#endif
+#ifndef TclBN_fast_s_mp_mul_digs
+#define TclBN_fast_s_mp_mul_digs \
+	(tclTomMathStubsPtr->tclBN_fast_s_mp_mul_digs) /* 51 */
+#endif
+#ifndef TclBN_fast_s_mp_sqr
+#define TclBN_fast_s_mp_sqr \
+	(tclTomMathStubsPtr->tclBN_fast_s_mp_sqr) /* 52 */
+#endif
+#ifndef TclBN_mp_karatsuba_mul
+#define TclBN_mp_karatsuba_mul \
+	(tclTomMathStubsPtr->tclBN_mp_karatsuba_mul) /* 53 */
+#endif
+#ifndef TclBN_mp_karatsuba_sqr
+#define TclBN_mp_karatsuba_sqr \
+	(tclTomMathStubsPtr->tclBN_mp_karatsuba_sqr) /* 54 */
+#endif
+#ifndef TclBN_mp_toom_mul
+#define TclBN_mp_toom_mul \
+	(tclTomMathStubsPtr->tclBN_mp_toom_mul) /* 55 */
+#endif
+#ifndef TclBN_mp_toom_sqr
+#define TclBN_mp_toom_sqr \
+	(tclTomMathStubsPtr->tclBN_mp_toom_sqr) /* 56 */
+#endif
+#ifndef TclBN_s_mp_add
+#define TclBN_s_mp_add \
+	(tclTomMathStubsPtr->tclBN_s_mp_add) /* 57 */
+#endif
+#ifndef TclBN_s_mp_mul_digs
+#define TclBN_s_mp_mul_digs \
+	(tclTomMathStubsPtr->tclBN_s_mp_mul_digs) /* 58 */
+#endif
+#ifndef TclBN_s_mp_sqr
+#define TclBN_s_mp_sqr \
+	(tclTomMathStubsPtr->tclBN_s_mp_sqr) /* 59 */
+#endif
+#ifndef TclBN_s_mp_sub
+#define TclBN_s_mp_sub \
+	(tclTomMathStubsPtr->tclBN_s_mp_sub) /* 60 */
+#endif
+#ifndef TclBN_mp_init_set_int
+#define TclBN_mp_init_set_int \
+	(tclTomMathStubsPtr->tclBN_mp_init_set_int) /* 61 */
+#endif
+#ifndef TclBN_mp_set_int
+#define TclBN_mp_set_int \
+	(tclTomMathStubsPtr->tclBN_mp_set_int) /* 62 */
+#endif
+#ifndef TclBN_mp_cnt_lsb
+#define TclBN_mp_cnt_lsb \
+	(tclTomMathStubsPtr->tclBN_mp_cnt_lsb) /* 63 */
+#endif
+
+#endif /* defined(USE_TCL_STUBS) && !defined(USE_TCL_STUB_PROCS) */
+
+/* !END!: Do not edit above this line. */
+
+#undef TCL_STORAGE_CLASS
+#define TCL_STORAGE_CLASS DLLIMPORT
+
+#endif /* _TCLINTDECLS */
diff --git a/generic/tclTomMathInt.h b/generic/tclTomMathInt.h
new file mode 100644
index 0000000..1b9eb64
--- /dev/null
+++ b/generic/tclTomMathInt.h
@@ -0,0 +1,2 @@
+#include "tclTomMath.h"
+#include "tommath_class.h"
diff --git a/generic/tclTomMathInterface.c b/generic/tclTomMathInterface.c
new file mode 100644
index 0000000..89c1132
--- /dev/null
+++ b/generic/tclTomMathInterface.c
@@ -0,0 +1,311 @@
+/*
+ *----------------------------------------------------------------------
+ *
+ * tclTomMathInterface.c --
+ *
+ *	This file contains procedures that are used as a 'glue' layer between
+ *	Tcl and libtommath.
+ *
+ * Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+#include "tommath.h"
+#include <limits.h>
+
+extern TclTomMathStubs tclTomMathStubs;
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclTommath_Init --
+ *
+ *	Initializes the TclTomMath 'package', which exists as a
+ *	placeholder so that the package data can be used to hold
+ *	a stub table pointer.
+ *
+ * Results:
+ *	Returns a standard Tcl result.
+ *
+ * Side effects:
+ *	Installs the stub table for tommath.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclTommath_Init(
+    Tcl_Interp* interp		/* Tcl interpreter */
+) {
+    /* TIP #268: Full patchlevel instead of just major.minor */
+
+    if (Tcl_PkgProvideEx(interp, "tcl::tommath", TCL_PATCH_LEVEL,
+			 (ClientData)&tclTomMathStubs) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBN_epoch --
+ *
+ *	Return the epoch number of the TclTomMath stubs table
+ *
+ * Results:
+ *	Returns an arbitrary integer that does not decrease with
+ *	release.  Stubs tables with different epochs are incompatible.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclBN_epoch(void)
+{
+    return TCLTOMMATH_EPOCH;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBN_revision --
+ *
+ *	Returns the revision level of the TclTomMath stubs table
+ *
+ * Results:
+ *	Returns an arbitrary integer that increases with revisions.
+ *	If a client requires a given epoch and revision, any Stubs table
+ *	with the same epoch and an equal or higher revision satisfies
+ *	the request.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclBN_revision(void)
+{
+    return TCLTOMMATH_REVISION;
+}
+#if 0
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBNAlloc --
+ *
+ *	Allocate memory for libtommath.
+ *
+ * Results:
+ *	Returns a pointer to the allocated block.
+ *
+ * This procedure is a wrapper around Tcl_Alloc, needed because of a
+ * mismatched type signature between Tcl_Alloc and malloc.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void *
+TclBNAlloc(
+    size_t x)
+{
+    return (void *) ckalloc((unsigned int) x);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBNRealloc --
+ *
+ *	Change the size of an allocated block of memory in libtommath
+ *
+ * Results:
+ *	Returns a pointer to the allocated block.
+ *
+ * This procedure is a wrapper around Tcl_Realloc, needed because of a
+ * mismatched type signature between Tcl_Realloc and realloc.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void *
+TclBNRealloc(
+    void *p,
+    size_t s)
+{
+    return (void *) ckrealloc((char *) p, (unsigned int) s);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBNFree --
+ *
+ *	Free allocated memory in libtommath.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Memory is freed.
+ *
+ * This function is simply a wrapper around Tcl_Free, needed in libtommath
+ * because of a type mismatch between free and Tcl_Free.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void
+TclBNFree(
+    void *p)
+{
+    ckfree((char *) p);
+}
+#endif
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBNInitBignumFromLong --
+ *
+ *	Allocate and initialize a 'bignum' from a native 'long'.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The 'bignum' is constructed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void
+TclBNInitBignumFromLong(
+    mp_int *a,
+    long initVal)
+{
+    int status;
+    unsigned long v;
+    mp_digit* p;
+
+    /*
+     * Allocate enough memory to hold the largest possible long
+     */
+
+    status = mp_init_size(a,
+	    (CHAR_BIT * sizeof(long) + DIGIT_BIT - 1) / DIGIT_BIT);
+    if (status != MP_OKAY) {
+	Tcl_Panic("initialization failure in TclBNInitBignumFromLong");
+    }
+
+    /*
+     * Convert arg to sign and magnitude.
+     */
+
+    if (initVal < 0) {
+	a->sign = MP_NEG;
+	v = -initVal;
+    } else {
+	a->sign = MP_ZPOS;
+	v = initVal;
+    }
+
+    /*
+     * Store the magnitude in the bignum.
+     */
+
+    p = a->dp;
+    while (v) {
+	*p++ = (mp_digit) (v & MP_MASK);
+	v >>= MP_DIGIT_BIT;
+    }
+    a->used = p - a->dp;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBNInitBignumFromWideInt --
+ *
+ *	Allocate and initialize a 'bignum' from a Tcl_WideInt
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The 'bignum' is constructed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void
+TclBNInitBignumFromWideInt(
+    mp_int *a,			/* Bignum to initialize */
+    Tcl_WideInt v)		/* Initial value */
+{
+    if (v < (Tcl_WideInt)0) {
+	TclBNInitBignumFromWideUInt(a, (Tcl_WideUInt)(-v));
+	mp_neg(a, a);
+    } else {
+	TclBNInitBignumFromWideUInt(a, (Tcl_WideUInt)v);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclBNInitBignumFromWideUInt --
+ *
+ *	Allocate and initialize a 'bignum' from a Tcl_WideUInt
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The 'bignum' is constructed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+extern void
+TclBNInitBignumFromWideUInt(
+    mp_int *a,			/* Bignum to initialize */
+    Tcl_WideUInt v)		/* Initial value */
+{
+    int status;
+    mp_digit *p;
+
+    /*
+     * Allocate enough memory to hold the largest possible Tcl_WideUInt.
+     */
+
+    status = mp_init_size(a,
+	    (CHAR_BIT * sizeof(Tcl_WideUInt) + DIGIT_BIT - 1) / DIGIT_BIT);
+    if (status != MP_OKAY) {
+	Tcl_Panic("initialization failure in TclBNInitBignumFromWideUInt");
+    }
+
+    a->sign = MP_ZPOS;
+
+    /*
+     * Store the magnitude in the bignum.
+     */
+
+    p = a->dp;
+    while (v) {
+	*p++ = (mp_digit) (v & MP_MASK);
+	v >>= MP_DIGIT_BIT;
+    }
+    a->used = p - a->dp;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclTrace.c b/generic/tclTrace.c
new file mode 100644
index 0000000..9298897
--- /dev/null
+++ b/generic/tclTrace.c
@@ -0,0 +1,3253 @@
+/*
+ * tclTrace.c --
+ *
+ *	This file contains code to handle most trace management.
+ *
+ * Copyright (c) 1987-1993 The Regents of the University of California.
+ * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ * Copyright (c) 1998-2000 Scriptics Corporation.
+ * Copyright (c) 2002 ActiveState Corporation.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclInt.h"
+
+/*
+ * Structures used to hold information about variable traces:
+ */
+
+typedef struct {
+    int flags;			/* Operations for which Tcl command is to be
+				 * invoked. */
+    size_t length;		/* Number of non-NUL chars. in command. */
+    char command[4];		/* Space for Tcl command to invoke. Actual
+				 * size will be as large as necessary to hold
+				 * command. This field must be the last in the
+				 * structure, so that it can be larger than 4
+				 * bytes. */
+} TraceVarInfo;
+
+typedef struct {
+    VarTrace traceInfo;
+    TraceVarInfo traceCmdInfo;
+} CombinedTraceVarInfo;
+
+/*
+ * Structure used to hold information about command traces:
+ */
+
+typedef struct {
+    int flags;			/* Operations for which Tcl command is to be
+				 * invoked. */
+    size_t length;		/* Number of non-NUL chars. in command. */
+    Tcl_Trace stepTrace;	/* Used for execution traces, when tracing
+				 * inside the given command */
+    int startLevel;		/* Used for bookkeeping with step execution
+				 * traces, store the level at which the step
+				 * trace was invoked */
+    char *startCmd;		/* Used for bookkeeping with step execution
+				 * traces, store the command name which
+				 * invoked step trace */
+    int curFlags;		/* Trace flags for the current command */
+    int curCode;		/* Return code for the current command */
+    int refCount;		/* Used to ensure this structure is not
+				 * deleted too early. Keeps track of how many
+				 * pieces of code have a pointer to this
+				 * structure. */
+    char command[4];		/* Space for Tcl command to invoke. Actual
+				 * size will be as large as necessary to hold
+				 * command. This field must be the last in the
+				 * structure, so that it can be larger than 4
+				 * bytes. */
+} TraceCommandInfo;
+
+/*
+ * Used by command execution traces. Note that we assume in the code that
+ * TCL_TRACE_ENTER_DURING_EXEC == 4 * TCL_TRACE_ENTER_EXEC and that
+ * TCL_TRACE_LEAVE_DURING_EXEC == 4 * TCL_TRACE_LEAVE_EXEC.
+ *
+ * TCL_TRACE_ENTER_DURING_EXEC  - Trace each command inside the command
+ *				  currently being traced, before execution.
+ * TCL_TRACE_LEAVE_DURING_EXEC  - Trace each command inside the command
+ *				  currently being traced, after execution.
+ * TCL_TRACE_ANY_EXEC		- OR'd combination of all EXEC flags.
+ * TCL_TRACE_EXEC_IN_PROGRESS   - The callback function on this trace is
+ *				  currently executing. Therefore we don't let
+ *				  further traces execute.
+ * TCL_TRACE_EXEC_DIRECT	- This execution trace is triggered directly
+ *				  by the command being traced, not because of
+ *				  an internal trace.
+ * The flags 'TCL_TRACE_DESTROYED' and 'TCL_INTERP_DESTROYED' may also be used
+ * in command execution traces.
+ */
+
+#define TCL_TRACE_ENTER_DURING_EXEC	4
+#define TCL_TRACE_LEAVE_DURING_EXEC	8
+#define TCL_TRACE_ANY_EXEC		15
+#define TCL_TRACE_EXEC_IN_PROGRESS	0x10
+#define TCL_TRACE_EXEC_DIRECT		0x20
+
+/*
+ * Forward declarations for functions defined in this file:
+ */
+
+typedef int (Tcl_TraceTypeObjCmd)(Tcl_Interp *interp, int optionIndex,
+	int objc, Tcl_Obj *const objv[]);
+
+static Tcl_TraceTypeObjCmd TraceVariableObjCmd;
+static Tcl_TraceTypeObjCmd TraceCommandObjCmd;
+static Tcl_TraceTypeObjCmd TraceExecutionObjCmd;
+
+/*
+ * Each subcommand has a number of 'types' to which it can apply. Currently
+ * 'execution', 'command' and 'variable' are the only types supported. These
+ * three arrays MUST be kept in sync! In the future we may provide an API to
+ * add to the list of supported trace types.
+ */
+
+static const char *traceTypeOptions[] = {
+    "execution", "command", "variable", NULL
+};
+static Tcl_TraceTypeObjCmd *const traceSubCmds[] = {
+    TraceExecutionObjCmd,
+    TraceCommandObjCmd,
+    TraceVariableObjCmd
+};
+
+/*
+ * Declarations for local functions to this file:
+ */
+
+static int		CallTraceFunction(Tcl_Interp *interp, Trace *tracePtr,
+			    Command *cmdPtr, const char *command, int numChars,
+			    int objc, Tcl_Obj *const objv[]);
+static char *		TraceVarProc(ClientData clientData, Tcl_Interp *interp,
+			    const char *name1, const char *name2, int flags);
+static void		TraceCommandProc(ClientData clientData,
+			    Tcl_Interp *interp, const char *oldName,
+			    const char *newName, int flags);
+static Tcl_CmdObjTraceProc TraceExecutionProc;
+static int		StringTraceProc(ClientData clientData,
+			    Tcl_Interp *interp, int level,
+			    const char *command, Tcl_Command commandInfo,
+			    int objc, Tcl_Obj *const objv[]);
+static void		StringTraceDeleteProc(ClientData clientData);
+static void		DisposeTraceResult(int flags, char *result);
+static int		TraceVarEx(Tcl_Interp *interp, const char *part1,
+			    const char *part2, register VarTrace *tracePtr);
+
+/*
+ * The following structure holds the client data for string-based
+ * trace procs
+ */
+
+typedef struct StringTraceData {
+    ClientData clientData;	/* Client data from Tcl_CreateTrace */
+    Tcl_CmdTraceProc *proc;	/* Trace function from Tcl_CreateTrace */
+} StringTraceData;
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_TraceObjCmd --
+ *
+ *	This function is invoked to process the "trace" Tcl command. See the
+ *	user documentation for details on what it does.
+ *
+ *	Standard syntax as of Tcl 8.4 is:
+ *	    trace {add|info|remove} {command|variable} name ops cmd
+ *
+ * Results:
+ *	A standard Tcl result.
+ *
+ * Side effects:
+ *	See the user documentation.
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+int
+Tcl_TraceObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int optionIndex;
+    char *name, *flagOps, *p;
+    /* Main sub commands to 'trace' */
+    static const char *traceOptions[] = {
+	"add", "info", "remove",
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+	"variable", "vdelete", "vinfo",
+#endif
+	NULL
+    };
+    /* 'OLD' options are pre-Tcl-8.4 style */
+    enum traceOptions {
+	TRACE_ADD, TRACE_INFO, TRACE_REMOVE,
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+	TRACE_OLD_VARIABLE, TRACE_OLD_VDELETE, TRACE_OLD_VINFO
+#endif
+    };
+
+    if (objc < 2) {
+	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
+	return TCL_ERROR;
+    }
+
+    if (Tcl_GetIndexFromObj(interp, objv[1], traceOptions,
+		"option", 0, &optionIndex) != TCL_OK) {
+	return TCL_ERROR;
+    }
+    switch ((enum traceOptions) optionIndex) {
+    case TRACE_ADD:
+    case TRACE_REMOVE: {
+	/*
+	 * All sub commands of trace add/remove must take at least one more
+	 * argument. Beyond that we let the subcommand itself control the
+	 * argument structure.
+	 */
+
+	int typeIndex;
+
+	if (objc < 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "type ?arg arg ...?");
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetIndexFromObj(interp, objv[2], traceTypeOptions, "option",
+		0, &typeIndex) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	return (traceSubCmds[typeIndex])(interp, optionIndex, objc, objv);
+    }
+    case TRACE_INFO: {
+	/*
+	 * All sub commands of trace info must take exactly two more arguments
+	 * which name the type of thing being traced and the name of the thing
+	 * being traced.
+	 */
+
+	int typeIndex;
+	if (objc < 3) {
+	    /*
+	     * Delegate other complaints to the type-specific code which can
+	     * give a better error message.
+	     */
+
+	    Tcl_WrongNumArgs(interp, 2, objv, "type name");
+	    return TCL_ERROR;
+	}
+	if (Tcl_GetIndexFromObj(interp, objv[2], traceTypeOptions, "option",
+		0, &typeIndex) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	return (traceSubCmds[typeIndex])(interp, optionIndex, objc, objv);
+	break;
+    }
+
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+    case TRACE_OLD_VARIABLE:
+    case TRACE_OLD_VDELETE: {
+	Tcl_Obj *copyObjv[6];
+	Tcl_Obj *opsList;
+	int code, numFlags;
+
+	if (objc != 5) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name ops command");
+	    return TCL_ERROR;
+	}
+
+	opsList = Tcl_NewObj();
+	Tcl_IncrRefCount(opsList);
+	flagOps = Tcl_GetStringFromObj(objv[3], &numFlags);
+	if (numFlags == 0) {
+	    Tcl_DecrRefCount(opsList);
+	    goto badVarOps;
+	}
+	for (p = flagOps; *p != 0; p++) {
+	    Tcl_Obj *opObj;
+
+	    if (*p == 'r') {
+		TclNewLiteralStringObj(opObj, "read");
+	    } else if (*p == 'w') {
+		TclNewLiteralStringObj(opObj, "write");
+	    } else if (*p == 'u') {
+		TclNewLiteralStringObj(opObj, "unset");
+	    } else if (*p == 'a') {
+		TclNewLiteralStringObj(opObj, "array");
+	    } else {
+		Tcl_DecrRefCount(opsList);
+		goto badVarOps;
+	    }
+	    Tcl_ListObjAppendElement(NULL, opsList, opObj);
+	}
+	copyObjv[0] = NULL;
+	memcpy(copyObjv+1, objv, objc*sizeof(Tcl_Obj *));
+	copyObjv[4] = opsList;
+	if (optionIndex == TRACE_OLD_VARIABLE) {
+	    code = (traceSubCmds[2])(interp, TRACE_ADD, objc+1, copyObjv);
+	} else {
+	    code = (traceSubCmds[2])(interp, TRACE_REMOVE, objc+1, copyObjv);
+	}
+	Tcl_DecrRefCount(opsList);
+	return code;
+    }
+    case TRACE_OLD_VINFO: {
+	ClientData clientData;
+	char ops[5];
+	Tcl_Obj *resultListPtr, *pairObjPtr, *elemObjPtr;
+
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "name");
+	    return TCL_ERROR;
+	}
+	resultListPtr = Tcl_NewObj();
+	clientData = 0;
+	name = Tcl_GetString(objv[2]);
+	while ((clientData = Tcl_VarTraceInfo(interp, name, 0,
+		TraceVarProc, clientData)) != 0) {
+
+	    TraceVarInfo *tvarPtr = (TraceVarInfo *) clientData;
+
+	    pairObjPtr = Tcl_NewListObj(0, NULL);
+	    p = ops;
+	    if (tvarPtr->flags & TCL_TRACE_READS) {
+		*p = 'r';
+		p++;
+	    }
+	    if (tvarPtr->flags & TCL_TRACE_WRITES) {
+		*p = 'w';
+		p++;
+	    }
+	    if (tvarPtr->flags & TCL_TRACE_UNSETS) {
+		*p = 'u';
+		p++;
+	    }
+	    if (tvarPtr->flags & TCL_TRACE_ARRAY) {
+		*p = 'a';
+		p++;
+	    }
+	    *p = '\0';
+
+	    /*
+	     * Build a pair (2-item list) with the ops string as the first obj
+	     * element and the tvarPtr->command string as the second obj
+	     * element. Append the pair (as an element) to the end of the
+	     * result object list.
+	     */
+
+	    elemObjPtr = Tcl_NewStringObj(ops, -1);
+	    Tcl_ListObjAppendElement(NULL, pairObjPtr, elemObjPtr);
+	    elemObjPtr = Tcl_NewStringObj(tvarPtr->command, -1);
+	    Tcl_ListObjAppendElement(NULL, pairObjPtr, elemObjPtr);
+	    Tcl_ListObjAppendElement(interp, resultListPtr, pairObjPtr);
+	}
+	Tcl_SetObjResult(interp, resultListPtr);
+	break;
+    }
+#endif /* TCL_REMOVE_OBSOLETE_TRACES */
+    }
+    return TCL_OK;
+
+  badVarOps:
+    Tcl_AppendResult(interp, "bad operations \"", flagOps,
+	    "\": should be one or more of rwua", NULL);
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceExecutionObjCmd --
+ *
+ *	Helper function for Tcl_TraceObjCmd; implements the [trace
+ *	{add|remove|info} execution ...] subcommands. See the user
+ *	documentation for details on what these do.
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	Depends on the operation (add, remove, or info) being performed; may
+ *	add or remove command traces on a command.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraceExecutionObjCmd(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int optionIndex,		/* Add, info or remove */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int commandLength, index;
+    char *name, *command;
+    size_t length;
+    enum traceOptions {
+	TRACE_ADD, TRACE_INFO, TRACE_REMOVE
+    };
+    static const char *opStrings[] = {
+	"enter", "leave", "enterstep", "leavestep", NULL
+    };
+    enum operations {
+	TRACE_EXEC_ENTER, TRACE_EXEC_LEAVE,
+	TRACE_EXEC_ENTER_STEP, TRACE_EXEC_LEAVE_STEP
+    };
+
+    switch ((enum traceOptions) optionIndex) {
+    case TRACE_ADD:
+    case TRACE_REMOVE: {
+	int flags = 0;
+	int i, listLen, result;
+	Tcl_Obj **elemPtrs;
+
+	if (objc != 6) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "name opList command");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Make sure the ops argument is a list object; get its length and a
+	 * pointer to its array of element pointers.
+	 */
+
+	result = Tcl_ListObjGetElements(interp, objv[4], &listLen, &elemPtrs);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	if (listLen == 0) {
+	    Tcl_SetResult(interp, "bad operation list \"\": must be "
+		    "one or more of enter, leave, enterstep, or leavestep",
+		    TCL_STATIC);
+	    return TCL_ERROR;
+	}
+	for (i = 0; i < listLen; i++) {
+	    if (Tcl_GetIndexFromObj(interp, elemPtrs[i], opStrings,
+		    "operation", TCL_EXACT, &index) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch ((enum operations) index) {
+	    case TRACE_EXEC_ENTER:
+		flags |= TCL_TRACE_ENTER_EXEC;
+		break;
+	    case TRACE_EXEC_LEAVE:
+		flags |= TCL_TRACE_LEAVE_EXEC;
+		break;
+	    case TRACE_EXEC_ENTER_STEP:
+		flags |= TCL_TRACE_ENTER_DURING_EXEC;
+		break;
+	    case TRACE_EXEC_LEAVE_STEP:
+		flags |= TCL_TRACE_LEAVE_DURING_EXEC;
+		break;
+	    }
+	}
+	command = Tcl_GetStringFromObj(objv[5], &commandLength);
+	length = (size_t) commandLength;
+	if ((enum traceOptions) optionIndex == TRACE_ADD) {
+	    TraceCommandInfo *tcmdPtr;
+
+	    tcmdPtr = (TraceCommandInfo *) ckalloc((unsigned)
+		    (sizeof(TraceCommandInfo) - sizeof(tcmdPtr->command)
+			    + length + 1));
+	    tcmdPtr->flags = flags;
+	    tcmdPtr->stepTrace = NULL;
+	    tcmdPtr->startLevel = 0;
+	    tcmdPtr->startCmd = NULL;
+	    tcmdPtr->length = length;
+	    tcmdPtr->refCount = 1;
+	    flags |= TCL_TRACE_DELETE;
+	    if (flags & (TCL_TRACE_ENTER_DURING_EXEC |
+		    TCL_TRACE_LEAVE_DURING_EXEC)) {
+		flags |= (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC);
+	    }
+	    memcpy(tcmdPtr->command, command, length+1);
+	    name = Tcl_GetString(objv[3]);
+	    if (Tcl_TraceCommand(interp, name, flags, TraceCommandProc,
+		    (ClientData) tcmdPtr) != TCL_OK) {
+		ckfree((char *) tcmdPtr);
+		return TCL_ERROR;
+	    }
+	} else {
+	    /*
+	     * Search through all of our traces on this command to see if
+	     * there's one with the given command. If so, then delete the
+	     * first one that matches.
+	     */
+
+	    TraceCommandInfo *tcmdPtr;
+	    ClientData clientData = NULL;
+	    name = Tcl_GetString(objv[3]);
+
+	    /*
+	     * First ensure the name given is valid.
+	     */
+
+	    if (Tcl_FindCommand(interp,name,NULL,TCL_LEAVE_ERR_MSG) == NULL) {
+		return TCL_ERROR;
+	    }
+
+	    while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
+		    TraceCommandProc, clientData)) != NULL) {
+		tcmdPtr = (TraceCommandInfo *) clientData;
+
+		/*
+		 * In checking the 'flags' field we must remove any extraneous
+		 * flags which may have been temporarily added by various
+		 * pieces of the trace mechanism.
+		 */
+
+		if ((tcmdPtr->length == length)
+			&& ((tcmdPtr->flags & (TCL_TRACE_ANY_EXEC |
+				TCL_TRACE_RENAME | TCL_TRACE_DELETE)) == flags)
+			&& (strncmp(command, tcmdPtr->command,
+				(size_t) length) == 0)) {
+		    flags |= TCL_TRACE_DELETE;
+		    if (flags & (TCL_TRACE_ENTER_DURING_EXEC |
+			    TCL_TRACE_LEAVE_DURING_EXEC)) {
+			flags |= (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC);
+		    }
+		    Tcl_UntraceCommand(interp, name, flags,
+			    TraceCommandProc, clientData);
+		    if (tcmdPtr->stepTrace != NULL) {
+			/*
+			 * We need to remove the interpreter-wide trace which
+			 * we created to allow 'step' traces.
+			 */
+
+			Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
+			tcmdPtr->stepTrace = NULL;
+			if (tcmdPtr->startCmd != NULL) {
+			    ckfree((char *) tcmdPtr->startCmd);
+			}
+		    }
+		    if (tcmdPtr->flags & TCL_TRACE_EXEC_IN_PROGRESS) {
+			/*
+			 * Postpone deletion.
+			 */
+
+			tcmdPtr->flags = 0;
+		    }
+		    if ((--tcmdPtr->refCount) <= 0) {
+			ckfree((char *) tcmdPtr);
+		    }
+		    break;
+		}
+	    }
+	}
+	break;
+    }
+    case TRACE_INFO: {
+	ClientData clientData;
+	Tcl_Obj *resultListPtr, *eachTraceObjPtr, *elemObjPtr;
+
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "name");
+	    return TCL_ERROR;
+	}
+
+	clientData = NULL;
+	name = Tcl_GetString(objv[3]);
+
+	/*
+	 * First ensure the name given is valid.
+	 */
+
+	if (Tcl_FindCommand(interp, name, NULL, TCL_LEAVE_ERR_MSG) == NULL) {
+	    return TCL_ERROR;
+	}
+
+	resultListPtr = Tcl_NewListObj(0, NULL);
+	while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
+		TraceCommandProc, clientData)) != NULL) {
+	    int numOps = 0;
+	    Tcl_Obj *opObj;
+	    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+
+	    /*
+	     * Build a list with the ops list as the first obj element and the
+	     * tcmdPtr->command string as the second obj element. Append this
+	     * list (as an element) to the end of the result object list.
+	     */
+
+	    elemObjPtr = Tcl_NewListObj(0, NULL);
+	    Tcl_IncrRefCount(elemObjPtr);
+	    if (tcmdPtr->flags & TCL_TRACE_ENTER_EXEC) {
+		TclNewLiteralStringObj(opObj, "enter");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tcmdPtr->flags & TCL_TRACE_LEAVE_EXEC) {
+		TclNewLiteralStringObj(opObj, "leave");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tcmdPtr->flags & TCL_TRACE_ENTER_DURING_EXEC) {
+		TclNewLiteralStringObj(opObj, "enterstep");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tcmdPtr->flags & TCL_TRACE_LEAVE_DURING_EXEC) {
+		TclNewLiteralStringObj(opObj, "leavestep");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    Tcl_ListObjLength(NULL, elemObjPtr, &numOps);
+	    if (0 == numOps) {
+		Tcl_DecrRefCount(elemObjPtr);
+		continue;
+	    }
+	    eachTraceObjPtr = Tcl_NewListObj(0, NULL);
+	    Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
+	    Tcl_DecrRefCount(elemObjPtr);
+	    elemObjPtr = NULL;
+
+	    Tcl_ListObjAppendElement(NULL, eachTraceObjPtr,
+		    Tcl_NewStringObj(tcmdPtr->command, -1));
+	    Tcl_ListObjAppendElement(interp, resultListPtr, eachTraceObjPtr);
+	}
+	Tcl_SetObjResult(interp, resultListPtr);
+	break;
+    }
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceCommandObjCmd --
+ *
+ *	Helper function for Tcl_TraceObjCmd; implements the [trace
+ *	{add|info|remove} command ...] subcommands. See the user documentation
+ *	for details on what these do.
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	Depends on the operation (add, remove, or info) being performed; may
+ *	add or remove command traces on a command.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraceCommandObjCmd(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int optionIndex,		/* Add, info or remove */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int commandLength, index;
+    char *name, *command;
+    size_t length;
+    enum traceOptions { TRACE_ADD, TRACE_INFO, TRACE_REMOVE };
+    static const char *opStrings[] = { "delete", "rename", NULL };
+    enum operations { TRACE_CMD_DELETE, TRACE_CMD_RENAME };
+
+    switch ((enum traceOptions) optionIndex) {
+    case TRACE_ADD:
+    case TRACE_REMOVE: {
+	int flags = 0;
+	int i, listLen, result;
+	Tcl_Obj **elemPtrs;
+
+	if (objc != 6) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "name opList command");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Make sure the ops argument is a list object; get its length and a
+	 * pointer to its array of element pointers.
+	 */
+
+	result = Tcl_ListObjGetElements(interp, objv[4], &listLen, &elemPtrs);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	if (listLen == 0) {
+	    Tcl_SetResult(interp, "bad operation list \"\": must be "
+		    "one or more of delete or rename", TCL_STATIC);
+	    return TCL_ERROR;
+	}
+
+	for (i = 0; i < listLen; i++) {
+	    if (Tcl_GetIndexFromObj(interp, elemPtrs[i], opStrings,
+		    "operation", TCL_EXACT, &index) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch ((enum operations) index) {
+	    case TRACE_CMD_RENAME:
+		flags |= TCL_TRACE_RENAME;
+		break;
+	    case TRACE_CMD_DELETE:
+		flags |= TCL_TRACE_DELETE;
+		break;
+	    }
+	}
+
+	command = Tcl_GetStringFromObj(objv[5], &commandLength);
+	length = (size_t) commandLength;
+	if ((enum traceOptions) optionIndex == TRACE_ADD) {
+	    TraceCommandInfo *tcmdPtr;
+
+	    tcmdPtr = (TraceCommandInfo *) ckalloc((unsigned)
+		    (sizeof(TraceCommandInfo) - sizeof(tcmdPtr->command)
+			    + length + 1));
+	    tcmdPtr->flags = flags;
+	    tcmdPtr->stepTrace = NULL;
+	    tcmdPtr->startLevel = 0;
+	    tcmdPtr->startCmd = NULL;
+	    tcmdPtr->length = length;
+	    tcmdPtr->refCount = 1;
+	    flags |= TCL_TRACE_DELETE;
+	    memcpy(tcmdPtr->command, command, length+1);
+	    name = Tcl_GetString(objv[3]);
+	    if (Tcl_TraceCommand(interp, name, flags, TraceCommandProc,
+		    (ClientData) tcmdPtr) != TCL_OK) {
+		ckfree((char *) tcmdPtr);
+		return TCL_ERROR;
+	    }
+	} else {
+	    /*
+	     * Search through all of our traces on this command to see if
+	     * there's one with the given command. If so, then delete the
+	     * first one that matches.
+	     */
+
+	    TraceCommandInfo *tcmdPtr;
+	    ClientData clientData = NULL;
+	    name = Tcl_GetString(objv[3]);
+
+	    /*
+	     * First ensure the name given is valid.
+	     */
+
+	    if (Tcl_FindCommand(interp,name,NULL,TCL_LEAVE_ERR_MSG) == NULL) {
+		return TCL_ERROR;
+	    }
+
+	    while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
+		    TraceCommandProc, clientData)) != NULL) {
+		tcmdPtr = (TraceCommandInfo *) clientData;
+		if ((tcmdPtr->length == length)
+			&& (tcmdPtr->flags == flags)
+			&& (strncmp(command, tcmdPtr->command,
+				(size_t) length) == 0)) {
+		    Tcl_UntraceCommand(interp, name, flags | TCL_TRACE_DELETE,
+			    TraceCommandProc, clientData);
+		    tcmdPtr->flags |= TCL_TRACE_DESTROYED;
+		    if ((--tcmdPtr->refCount) <= 0) {
+			ckfree((char *) tcmdPtr);
+		    }
+		    break;
+		}
+	    }
+	}
+	break;
+    }
+    case TRACE_INFO: {
+	ClientData clientData;
+	Tcl_Obj *resultListPtr, *eachTraceObjPtr, *elemObjPtr;
+
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "name");
+	    return TCL_ERROR;
+	}
+
+	clientData = NULL;
+	name = Tcl_GetString(objv[3]);
+
+	/*
+	 * First ensure the name given is valid.
+	 */
+
+	if (Tcl_FindCommand(interp, name, NULL, TCL_LEAVE_ERR_MSG) == NULL) {
+	    return TCL_ERROR;
+	}
+
+	resultListPtr = Tcl_NewListObj(0, NULL);
+	while ((clientData = Tcl_CommandTraceInfo(interp, name, 0,
+		TraceCommandProc, clientData)) != NULL) {
+	    int numOps = 0;
+	    Tcl_Obj *opObj;
+	    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+
+	    /*
+	     * Build a list with the ops list as the first obj element and the
+	     * tcmdPtr->command string as the second obj element. Append this
+	     * list (as an element) to the end of the result object list.
+	     */
+
+	    elemObjPtr = Tcl_NewListObj(0, NULL);
+	    Tcl_IncrRefCount(elemObjPtr);
+	    if (tcmdPtr->flags & TCL_TRACE_RENAME) {
+		TclNewLiteralStringObj(opObj, "rename");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tcmdPtr->flags & TCL_TRACE_DELETE) {
+		TclNewLiteralStringObj(opObj, "delete");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    Tcl_ListObjLength(NULL, elemObjPtr, &numOps);
+	    if (0 == numOps) {
+		Tcl_DecrRefCount(elemObjPtr);
+		continue;
+	    }
+	    eachTraceObjPtr = Tcl_NewListObj(0, NULL);
+	    Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
+	    Tcl_DecrRefCount(elemObjPtr);
+
+	    elemObjPtr = Tcl_NewStringObj(tcmdPtr->command, -1);
+	    Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
+	    Tcl_ListObjAppendElement(interp, resultListPtr, eachTraceObjPtr);
+	}
+	Tcl_SetObjResult(interp, resultListPtr);
+	break;
+    }
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceVariableObjCmd --
+ *
+ *	Helper function for Tcl_TraceObjCmd; implements the [trace
+ *	{add|info|remove} variable ...] subcommands. See the user
+ *	documentation for details on what these do.
+ *
+ * Results:
+ *	Standard Tcl result.
+ *
+ * Side effects:
+ *	Depends on the operation (add, remove, or info) being performed; may
+ *	add or remove variable traces on a variable.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraceVariableObjCmd(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int optionIndex,		/* Add, info or remove */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    int commandLength, index;
+    char *name, *command;
+    size_t length;
+    enum traceOptions { TRACE_ADD, TRACE_INFO, TRACE_REMOVE };
+    static const char *opStrings[] = {
+	"array", "read", "unset", "write", NULL
+    };
+    enum operations {
+	TRACE_VAR_ARRAY, TRACE_VAR_READ, TRACE_VAR_UNSET, TRACE_VAR_WRITE
+    };
+
+    switch ((enum traceOptions) optionIndex) {
+    case TRACE_ADD:
+    case TRACE_REMOVE: {
+	int flags = 0;
+	int i, listLen, result;
+	Tcl_Obj **elemPtrs;
+
+	if (objc != 6) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "name opList command");
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Make sure the ops argument is a list object; get its length and a
+	 * pointer to its array of element pointers.
+	 */
+
+	result = Tcl_ListObjGetElements(interp, objv[4], &listLen, &elemPtrs);
+	if (result != TCL_OK) {
+	    return result;
+	}
+	if (listLen == 0) {
+	    Tcl_SetResult(interp, "bad operation list \"\": must be "
+		    "one or more of array, read, unset, or write", TCL_STATIC);
+	    return TCL_ERROR;
+	}
+	for (i = 0; i < listLen ; i++) {
+	    if (Tcl_GetIndexFromObj(interp, elemPtrs[i], opStrings,
+		    "operation", TCL_EXACT, &index) != TCL_OK) {
+		return TCL_ERROR;
+	    }
+	    switch ((enum operations) index) {
+	    case TRACE_VAR_ARRAY:
+		flags |= TCL_TRACE_ARRAY;
+		break;
+	    case TRACE_VAR_READ:
+		flags |= TCL_TRACE_READS;
+		break;
+	    case TRACE_VAR_UNSET:
+		flags |= TCL_TRACE_UNSETS;
+		break;
+	    case TRACE_VAR_WRITE:
+		flags |= TCL_TRACE_WRITES;
+		break;
+	    }
+	}
+	command = Tcl_GetStringFromObj(objv[5], &commandLength);
+	length = (size_t) commandLength;
+	if ((enum traceOptions) optionIndex == TRACE_ADD) {
+	    CombinedTraceVarInfo *ctvarPtr;
+
+	    ctvarPtr = (CombinedTraceVarInfo *) ckalloc((unsigned)
+		    (sizeof(CombinedTraceVarInfo) + length + 1
+		    - sizeof(ctvarPtr->traceCmdInfo.command)));
+	    ctvarPtr->traceCmdInfo.flags = flags;
+	    if (objv[0] == NULL) {
+		ctvarPtr->traceCmdInfo.flags |= TCL_TRACE_OLD_STYLE;
+	    }
+	    ctvarPtr->traceCmdInfo.length = length;
+	    flags |= TCL_TRACE_UNSETS | TCL_TRACE_RESULT_OBJECT;
+	    memcpy(ctvarPtr->traceCmdInfo.command, command, length+1);
+	    ctvarPtr->traceInfo.traceProc = TraceVarProc;
+	    ctvarPtr->traceInfo.clientData = (ClientData)
+		    &ctvarPtr->traceCmdInfo;
+	    ctvarPtr->traceInfo.flags = flags;
+	    name = Tcl_GetString(objv[3]);
+	    if (TraceVarEx(interp,name,NULL,(VarTrace*)ctvarPtr) != TCL_OK) {
+		ckfree((char *) ctvarPtr);
+		return TCL_ERROR;
+	    }
+	} else {
+	    /*
+	     * Search through all of our traces on this variable to see if
+	     * there's one with the given command. If so, then delete the
+	     * first one that matches.
+	     */
+
+	    TraceVarInfo *tvarPtr;
+	    ClientData clientData = 0;
+	    name = Tcl_GetString(objv[3]);
+	    while ((clientData = Tcl_VarTraceInfo(interp, name, 0,
+		    TraceVarProc, clientData)) != 0) {
+		tvarPtr = (TraceVarInfo *) clientData;
+		if ((tvarPtr->length == length)
+			&& ((tvarPtr->flags & ~TCL_TRACE_OLD_STYLE)==flags)
+			&& (strncmp(command, tvarPtr->command,
+				(size_t) length) == 0)) {
+		    Tcl_UntraceVar2(interp, name, NULL,
+			    flags | TCL_TRACE_UNSETS | TCL_TRACE_RESULT_OBJECT,
+			    TraceVarProc, clientData);
+		    break;
+		}
+	    }
+	}
+	break;
+    }
+    case TRACE_INFO: {
+	ClientData clientData;
+	Tcl_Obj *resultListPtr, *eachTraceObjPtr, *elemObjPtr;
+
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 3, objv, "name");
+	    return TCL_ERROR;
+	}
+
+	resultListPtr = Tcl_NewObj();
+	clientData = 0;
+	name = Tcl_GetString(objv[3]);
+	while ((clientData = Tcl_VarTraceInfo(interp, name, 0, TraceVarProc,
+		clientData)) != 0) {
+	    Tcl_Obj *opObj;
+	    TraceVarInfo *tvarPtr = (TraceVarInfo *) clientData;
+
+	    /*
+	     * Build a list with the ops list as the first obj element and the
+	     * tcmdPtr->command string as the second obj element. Append this
+	     * list (as an element) to the end of the result object list.
+	     */
+
+	    elemObjPtr = Tcl_NewListObj(0, NULL);
+	    if (tvarPtr->flags & TCL_TRACE_ARRAY) {
+		TclNewLiteralStringObj(opObj, "array");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tvarPtr->flags & TCL_TRACE_READS) {
+		TclNewLiteralStringObj(opObj, "read");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tvarPtr->flags & TCL_TRACE_WRITES) {
+		TclNewLiteralStringObj(opObj, "write");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    if (tvarPtr->flags & TCL_TRACE_UNSETS) {
+		TclNewLiteralStringObj(opObj, "unset");
+		Tcl_ListObjAppendElement(NULL, elemObjPtr, opObj);
+	    }
+	    eachTraceObjPtr = Tcl_NewListObj(0, NULL);
+	    Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
+
+	    elemObjPtr = Tcl_NewStringObj(tvarPtr->command, -1);
+	    Tcl_ListObjAppendElement(NULL, eachTraceObjPtr, elemObjPtr);
+	    Tcl_ListObjAppendElement(interp, resultListPtr,
+		    eachTraceObjPtr);
+	}
+	Tcl_SetObjResult(interp, resultListPtr);
+	break;
+    }
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CommandTraceInfo --
+ *
+ *	Return the clientData value associated with a trace on a command.
+ *	This function can also be used to step through all of the traces on a
+ *	particular command that have the same trace function.
+ *
+ * Results:
+ *	The return value is the clientData value associated with a trace on
+ *	the given command. Information will only be returned for a trace with
+ *	proc as trace function. If the clientData argument is NULL then the
+ *	first such trace is returned; otherwise, the next relevant one after
+ *	the one given by clientData will be returned. If the command doesn't
+ *	exist then an error message is left in the interpreter and NULL is
+ *	returned. Also, if there are no (more) traces for the given command,
+ *	NULL is returned.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ClientData
+Tcl_CommandTraceInfo(
+    Tcl_Interp *interp,		/* Interpreter containing command. */
+    const char *cmdName,	/* Name of command. */
+    int flags,			/* OR-ed combo or TCL_GLOBAL_ONLY,
+				 * TCL_NAMESPACE_ONLY (can be 0). */
+    Tcl_CommandTraceProc *proc,	/* Function assocated with trace. */
+    ClientData prevClientData)	/* If non-NULL, gives last value returned by
+				 * this function, so this call will return the
+				 * next trace after that one. If NULL, this
+				 * call will return the first trace. */
+{
+    Command *cmdPtr;
+    register CommandTrace *tracePtr;
+
+    cmdPtr = (Command *) Tcl_FindCommand(interp, cmdName, NULL,
+	    TCL_LEAVE_ERR_MSG);
+    if (cmdPtr == NULL) {
+	return NULL;
+    }
+
+    /*
+     * Find the relevant trace, if any, and return its clientData.
+     */
+
+    tracePtr = cmdPtr->tracePtr;
+    if (prevClientData != NULL) {
+	for (; tracePtr!=NULL ; tracePtr=tracePtr->nextPtr) {
+	    if ((tracePtr->clientData == prevClientData)
+		    && (tracePtr->traceProc == proc)) {
+		tracePtr = tracePtr->nextPtr;
+		break;
+	    }
+	}
+    }
+    for (; tracePtr!=NULL ; tracePtr=tracePtr->nextPtr) {
+	if (tracePtr->traceProc == proc) {
+	    return tracePtr->clientData;
+	}
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_TraceCommand --
+ *
+ *	Arrange for rename/deletes to a command to cause a function to be
+ *	invoked, which can monitor the operations.
+ *
+ *	Also optionally arrange for execution of that command to cause a
+ *	function to be invoked.
+ *
+ * Results:
+ *	A standard Tcl return value.
+ *
+ * Side effects:
+ *	A trace is set up on the command given by cmdName, such that future
+ *	changes to the command will be intermediated by proc. See the manual
+ *	entry for complete details on the calling sequence for proc.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_TraceCommand(
+    Tcl_Interp *interp,		/* Interpreter in which command is to be
+				 * traced. */
+    const char *cmdName,	/* Name of command. */
+    int flags,			/* OR-ed collection of bits, including any of
+				 * TCL_TRACE_RENAME, TCL_TRACE_DELETE, and any
+				 * of the TRACE_*_EXEC flags */
+    Tcl_CommandTraceProc *proc,	/* Function to call when specified ops are
+				 * invoked upon cmdName. */
+    ClientData clientData)	/* Arbitrary argument to pass to proc. */
+{
+    Command *cmdPtr;
+    register CommandTrace *tracePtr;
+
+    cmdPtr = (Command *) Tcl_FindCommand(interp, cmdName, NULL,
+	    TCL_LEAVE_ERR_MSG);
+    if (cmdPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Set up trace information.
+     */
+
+    tracePtr = (CommandTrace *) ckalloc(sizeof(CommandTrace));
+    tracePtr->traceProc = proc;
+    tracePtr->clientData = clientData;
+    tracePtr->flags = flags &
+	    (TCL_TRACE_RENAME | TCL_TRACE_DELETE | TCL_TRACE_ANY_EXEC);
+    tracePtr->nextPtr = cmdPtr->tracePtr;
+    tracePtr->refCount = 1;
+    cmdPtr->tracePtr = tracePtr;
+    if (tracePtr->flags & TCL_TRACE_ANY_EXEC) {
+	/*
+	 * Bug 3484621: up the interp's epoch if this is a BC'ed command
+	 */
+	
+	if ((cmdPtr->compileProc != NULL) && !(cmdPtr->flags & CMD_HAS_EXEC_TRACES)){
+	    Interp *iPtr = (Interp *) interp;
+	    iPtr->compileEpoch++;
+	}
+	cmdPtr->flags |= CMD_HAS_EXEC_TRACES;
+    }
+
+    
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_UntraceCommand --
+ *
+ *	Remove a previously-created trace for a command.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If there exists a trace for the command given by cmdName with the
+ *	given flags, proc, and clientData, then that trace is removed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_UntraceCommand(
+    Tcl_Interp *interp,		/* Interpreter containing command. */
+    const char *cmdName,	/* Name of command. */
+    int flags,			/* OR-ed collection of bits, including any of
+				 * TCL_TRACE_RENAME, TCL_TRACE_DELETE, and any
+				 * of the TRACE_*_EXEC flags */
+    Tcl_CommandTraceProc *proc,	/* Function assocated with trace. */
+    ClientData clientData)	/* Arbitrary argument to pass to proc. */
+{
+    register CommandTrace *tracePtr;
+    CommandTrace *prevPtr;
+    Command *cmdPtr;
+    Interp *iPtr = (Interp *) interp;
+    ActiveCommandTrace *activePtr;
+    int hasExecTraces = 0;
+
+    cmdPtr = (Command *) Tcl_FindCommand(interp, cmdName, NULL,
+	    TCL_LEAVE_ERR_MSG);
+    if (cmdPtr == NULL) {
+	return;
+    }
+
+    flags &= (TCL_TRACE_RENAME | TCL_TRACE_DELETE | TCL_TRACE_ANY_EXEC);
+
+    for (tracePtr = cmdPtr->tracePtr, prevPtr = NULL; ;
+	    prevPtr = tracePtr, tracePtr = tracePtr->nextPtr) {
+	if (tracePtr == NULL) {
+	    return;
+	}
+	if ((tracePtr->traceProc == proc)
+		&& ((tracePtr->flags & (TCL_TRACE_RENAME | TCL_TRACE_DELETE |
+			TCL_TRACE_ANY_EXEC)) == flags)
+		&& (tracePtr->clientData == clientData)) {
+	    if (tracePtr->flags & TCL_TRACE_ANY_EXEC) {
+		hasExecTraces = 1;
+	    }
+	    break;
+	}
+    }
+
+    /*
+     * The code below makes it possible to delete traces while traces are
+     * active: it makes sure that the deleted trace won't be processed by
+     * CallCommandTraces.
+     */
+
+    for (activePtr = iPtr->activeCmdTracePtr;  activePtr != NULL;
+	    activePtr = activePtr->nextPtr) {
+	if (activePtr->nextTracePtr == tracePtr) {
+	    if (activePtr->reverseScan) {
+		activePtr->nextTracePtr = prevPtr;
+	    } else {
+		activePtr->nextTracePtr = tracePtr->nextPtr;
+	    }
+	}
+    }
+    if (prevPtr == NULL) {
+	cmdPtr->tracePtr = tracePtr->nextPtr;
+    } else {
+	prevPtr->nextPtr = tracePtr->nextPtr;
+    }
+    tracePtr->flags = 0;
+
+    if ((--tracePtr->refCount) <= 0) {
+	ckfree((char *) tracePtr);
+    }
+
+    if (hasExecTraces) {
+	for (tracePtr = cmdPtr->tracePtr, prevPtr = NULL; tracePtr != NULL ;
+		prevPtr = tracePtr, tracePtr = tracePtr->nextPtr) {
+	    if (tracePtr->flags & TCL_TRACE_ANY_EXEC) {
+		return;
+	    }
+	}
+
+	/*
+	 * None of the remaining traces on this command are execution traces.
+	 * We therefore remove this flag:
+	 */
+
+	cmdPtr->flags &= ~CMD_HAS_EXEC_TRACES;
+
+        /*
+	 * Bug 3484621: up the interp's epoch if this is a BC'ed command
+	 */
+	
+	if (cmdPtr->compileProc != NULL) {
+	    Interp *iPtr = (Interp *) interp;
+	    iPtr->compileEpoch++;
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceCommandProc --
+ *
+ *	This function is called to handle command changes that have been
+ *	traced using the "trace" command, when using the 'rename' or 'delete'
+ *	options.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Depends on the command associated with the trace.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static void
+TraceCommandProc(
+    ClientData clientData,	/* Information about the command trace. */
+    Tcl_Interp *interp,		/* Interpreter containing command. */
+    const char *oldName,	/* Name of command being changed. */
+    const char *newName,	/* New name of command. Empty string or NULL
+				 * means command is being deleted (renamed to
+				 * ""). */
+    int flags)			/* OR-ed bits giving operation and other
+				 * information. */
+{
+    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+    int code;
+    Tcl_DString cmd;
+
+    tcmdPtr->refCount++;
+
+    if ((tcmdPtr->flags & flags) && !Tcl_InterpDeleted(interp)
+	    && !Tcl_LimitExceeded(interp)) {
+	/*
+	 * Generate a command to execute by appending list elements for the
+	 * old and new command name and the operation.
+	 */
+
+	Tcl_DStringInit(&cmd);
+	Tcl_DStringAppend(&cmd, tcmdPtr->command, (int) tcmdPtr->length);
+	Tcl_DStringAppendElement(&cmd, oldName);
+	Tcl_DStringAppendElement(&cmd, (newName ? newName : ""));
+	if (flags & TCL_TRACE_RENAME) {
+	    Tcl_DStringAppend(&cmd, " rename", 7);
+	} else if (flags & TCL_TRACE_DELETE) {
+	    Tcl_DStringAppend(&cmd, " delete", 7);
+	}
+
+	/*
+	 * Execute the command. We discard any object result the command
+	 * returns.
+	 *
+	 * Add the TCL_TRACE_DESTROYED flag to tcmdPtr to indicate to other
+	 * areas that this will be destroyed by us, otherwise a double-free
+	 * might occur depending on what the eval does.
+	 */
+
+	if (flags & TCL_TRACE_DESTROYED) {
+	    tcmdPtr->flags |= TCL_TRACE_DESTROYED;
+	}
+	code = Tcl_EvalEx(interp, Tcl_DStringValue(&cmd),
+		Tcl_DStringLength(&cmd), 0);
+	if (code != TCL_OK) {
+	    /* We ignore errors in these traced commands */
+	    /*** QUESTION: Use Tcl_BackgroundError(interp); instead? ***/
+	}
+	Tcl_DStringFree(&cmd);
+    }
+
+    /*
+     * We delete when the trace was destroyed or if this is a delete trace,
+     * because command deletes are unconditional, so the trace must go away.
+     */
+
+    if (flags & (TCL_TRACE_DESTROYED | TCL_TRACE_DELETE)) {
+	int untraceFlags = tcmdPtr->flags;
+	Tcl_InterpState state;
+
+	if (tcmdPtr->stepTrace != NULL) {
+	    Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
+	    tcmdPtr->stepTrace = NULL;
+	    if (tcmdPtr->startCmd != NULL) {
+		ckfree((char *) tcmdPtr->startCmd);
+	    }
+	}
+	if (tcmdPtr->flags & TCL_TRACE_EXEC_IN_PROGRESS) {
+	    /*
+	     * Postpone deletion, until exec trace returns.
+	     */
+
+	    tcmdPtr->flags = 0;
+	}
+
+	/*
+	 * We need to construct the same flags for Tcl_UntraceCommand as were
+	 * passed to Tcl_TraceCommand. Reproduce the processing of [trace add
+	 * execution/command]. Be careful to keep this code in sync with that.
+	 */
+
+	if (untraceFlags & TCL_TRACE_ANY_EXEC) {
+	    untraceFlags |= TCL_TRACE_DELETE;
+	    if (untraceFlags & (TCL_TRACE_ENTER_DURING_EXEC
+		    | TCL_TRACE_LEAVE_DURING_EXEC)) {
+		untraceFlags |= (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC);
+	    }
+	} else if (untraceFlags & TCL_TRACE_RENAME) {
+	    untraceFlags |= TCL_TRACE_DELETE;
+	}
+
+	/*
+	 * Remove the trace since TCL_TRACE_DESTROYED tells us to, or the
+	 * command we're tracing has just gone away. Then decrement the
+	 * clientData refCount that was set up by trace creation.
+	 *
+	 * Note that we save the (return) state of the interpreter to prevent
+	 * bizarre error messages.
+	 */
+
+	state = Tcl_SaveInterpState(interp, TCL_OK);
+	Tcl_UntraceCommand(interp, oldName, untraceFlags,
+		TraceCommandProc, clientData);
+	(void) Tcl_RestoreInterpState(interp, state);
+	tcmdPtr->refCount--;
+    }
+    if ((--tcmdPtr->refCount) <= 0) {
+	ckfree((char *) tcmdPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCheckExecutionTraces --
+ *
+ *	Checks on all current command execution traces, and invokes functions
+ *	which have been registered. This function can be used by other code
+ *	which performs execution to unify the tracing system, so that
+ *	execution traces will function for that other code.
+ *
+ *	For instance extensions like [incr Tcl] which use their own execution
+ *	technique can make use of Tcl's tracing.
+ *
+ *	This function is called by 'TclEvalObjvInternal'
+ *
+ * Results:
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR, etc.
+ *
+ * Side effects:
+ *	Those side effects made by any trace functions called.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCheckExecutionTraces(
+    Tcl_Interp *interp,		/* The current interpreter. */
+    const char *command,	/* Pointer to beginning of the current command
+				 * string. */
+    int numChars,		/* The number of characters in 'command' which
+				 * are part of the command string. */
+    Command *cmdPtr,		/* Points to command's Command struct. */
+    int code,			/* The current result code. */
+    int traceFlags,		/* Current tracing situation. */
+    int objc,			/* Number of arguments for the command. */
+    Tcl_Obj *const objv[])	/* Pointers to Tcl_Obj of each argument. */
+{
+    Interp *iPtr = (Interp *) interp;
+    CommandTrace *tracePtr, *lastTracePtr;
+    ActiveCommandTrace active;
+    int curLevel;
+    int traceCode = TCL_OK;
+    Tcl_InterpState state = NULL;
+
+    if (cmdPtr->tracePtr == NULL) {
+	return traceCode;
+    }
+
+    curLevel = iPtr->varFramePtr->level;
+
+    active.nextPtr = iPtr->activeCmdTracePtr;
+    iPtr->activeCmdTracePtr = &active;
+
+    active.cmdPtr = cmdPtr;
+    lastTracePtr = NULL;
+    for (tracePtr = cmdPtr->tracePtr;
+	    (traceCode == TCL_OK) && (tracePtr != NULL);
+	    tracePtr = active.nextTracePtr) {
+	if (traceFlags & TCL_TRACE_LEAVE_EXEC) {
+	    /*
+	     * Execute the trace command in order of creation for "leave".
+	     */
+
+	    active.reverseScan = 1;
+	    active.nextTracePtr = NULL;
+	    tracePtr = cmdPtr->tracePtr;
+	    while (tracePtr->nextPtr != lastTracePtr) {
+		active.nextTracePtr = tracePtr;
+		tracePtr = tracePtr->nextPtr;
+	    }
+	} else {
+	    active.reverseScan = 0;
+	    active.nextTracePtr = tracePtr->nextPtr;
+	}
+	if (tracePtr->traceProc == TraceCommandProc) {
+	    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *)
+		    tracePtr->clientData;
+
+	    if (tcmdPtr->flags != 0) {
+		tcmdPtr->curFlags = traceFlags | TCL_TRACE_EXEC_DIRECT;
+		tcmdPtr->curCode  = code;
+		tcmdPtr->refCount++;
+		if (state == NULL) {
+		    state = Tcl_SaveInterpState(interp, code);
+		}
+		traceCode = TraceExecutionProc((ClientData) tcmdPtr, interp,
+			curLevel, command, (Tcl_Command) cmdPtr, objc, objv);
+		if ((--tcmdPtr->refCount) <= 0) {
+		    ckfree((char *) tcmdPtr);
+		}
+	    }
+	}
+	if (active.nextTracePtr) {
+	    lastTracePtr = active.nextTracePtr->nextPtr;
+	}
+    }
+    iPtr->activeCmdTracePtr = active.nextPtr;
+    if (state) {
+	if (traceCode == TCL_OK) {
+	    (void) Tcl_RestoreInterpState(interp, state);
+	} else {
+	    Tcl_DiscardInterpState(state);
+	}
+    }
+
+    return(traceCode);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCheckInterpTraces --
+ *
+ *	Checks on all current traces, and invokes functions which have been
+ *	registered. This function can be used by other code which performs
+ *	execution to unify the tracing system. For instance extensions like
+ *	[incr Tcl] which use their own execution technique can make use of
+ *	Tcl's tracing.
+ *
+ *	This function is called by 'TclEvalObjvInternal'
+ *
+ * Results:
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR, etc.
+ *
+ * Side effects:
+ *	Those side effects made by any trace functions called.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclCheckInterpTraces(
+    Tcl_Interp *interp,		/* The current interpreter. */
+    const char *command,	/* Pointer to beginning of the current command
+				 * string. */
+    int numChars,		/* The number of characters in 'command' which
+				 * are part of the command string. */
+    Command *cmdPtr,		/* Points to command's Command struct. */
+    int code,			/* The current result code. */
+    int traceFlags,		/* Current tracing situation. */
+    int objc,			/* Number of arguments for the command. */
+    Tcl_Obj *const objv[])	/* Pointers to Tcl_Obj of each argument. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Trace *tracePtr, *lastTracePtr;
+    ActiveInterpTrace active;
+    int curLevel;
+    int traceCode = TCL_OK;
+    Tcl_InterpState state = NULL;
+
+    if ((iPtr->tracePtr == NULL)
+	    || (iPtr->flags & INTERP_TRACE_IN_PROGRESS)) {
+	return(traceCode);
+    }
+
+    curLevel = iPtr->numLevels;
+
+    active.nextPtr = iPtr->activeInterpTracePtr;
+    iPtr->activeInterpTracePtr = &active;
+
+    lastTracePtr = NULL;
+    for (tracePtr = iPtr->tracePtr;
+	    (traceCode == TCL_OK) && (tracePtr != NULL);
+	    tracePtr = active.nextTracePtr) {
+	if (traceFlags & TCL_TRACE_ENTER_EXEC) {
+	    /*
+	     * Execute the trace command in reverse order of creation for
+	     * "enterstep" operation. The order is changed for "enterstep"
+	     * instead of for "leavestep" as was done in
+	     * TclCheckExecutionTraces because for step traces,
+	     * Tcl_CreateObjTrace creates one more linked list of traces which
+	     * results in one more reversal of trace invocation.
+	     */
+
+	    active.reverseScan = 1;
+	    active.nextTracePtr = NULL;
+	    tracePtr = iPtr->tracePtr;
+	    while (tracePtr->nextPtr != lastTracePtr) {
+		active.nextTracePtr = tracePtr;
+		tracePtr = tracePtr->nextPtr;
+	    }
+	    if (active.nextTracePtr) {
+		lastTracePtr = active.nextTracePtr->nextPtr;
+	    }
+	} else {
+	    active.reverseScan = 0;
+	    active.nextTracePtr = tracePtr->nextPtr;
+	}
+
+	if (tracePtr->level > 0 && curLevel > tracePtr->level) {
+	    continue;
+	}
+
+	if (!(tracePtr->flags & TCL_TRACE_EXEC_IN_PROGRESS)) {
+	    /*
+	     * The proc invoked might delete the traced command which which
+	     * might try to free tracePtr. We want to use tracePtr until the
+	     * end of this if section, so we use Tcl_Preserve() and
+	     * Tcl_Release() to be sure it is not freed while we still need
+	     * it.
+	     */
+
+	    Tcl_Preserve((ClientData) tracePtr);
+	    tracePtr->flags |= TCL_TRACE_EXEC_IN_PROGRESS;
+	    if (state == NULL) {
+		state = Tcl_SaveInterpState(interp, code);
+	    }
+
+	    if (tracePtr->flags &
+		    (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC)) {
+		/*
+		 * New style trace.
+		 */
+
+		if (tracePtr->flags & traceFlags) {
+		    if (tracePtr->proc == TraceExecutionProc) {
+			TraceCommandInfo *tcmdPtr = (TraceCommandInfo *)
+				tracePtr->clientData;
+
+			tcmdPtr->curFlags = traceFlags;
+			tcmdPtr->curCode = code;
+		    }
+		    traceCode = (tracePtr->proc)(tracePtr->clientData,
+			    interp, curLevel, command, (Tcl_Command) cmdPtr,
+			    objc, objv);
+		}
+	    } else {
+		/*
+		 * Old-style trace.
+		 */
+
+		if (traceFlags & TCL_TRACE_ENTER_EXEC) {
+		    /*
+		     * Old-style interpreter-wide traces only trigger before
+		     * the command is executed.
+		     */
+
+		    traceCode = CallTraceFunction(interp, tracePtr, cmdPtr,
+			    command, numChars, objc, objv);
+		}
+	    }
+	    tracePtr->flags &= ~TCL_TRACE_EXEC_IN_PROGRESS;
+	    Tcl_Release((ClientData) tracePtr);
+	}
+    }
+    iPtr->activeInterpTracePtr = active.nextPtr;
+    if (state) {
+	if (traceCode == TCL_OK) {
+	    (void) Tcl_RestoreInterpState(interp, state);
+	} else {
+	    Tcl_DiscardInterpState(state);
+	}
+    }
+
+    return(traceCode);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CallTraceFunction --
+ *
+ *	Invokes a trace function registered with an interpreter. These
+ *	functions trace command execution. Currently this trace function is
+ *	called with the address of the string-based Tcl_CmdProc for the
+ *	command, not the Tcl_ObjCmdProc.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Those side effects made by the trace function.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+CallTraceFunction(
+    Tcl_Interp *interp,		/* The current interpreter. */
+    register Trace *tracePtr,	/* Describes the trace function to call. */
+    Command *cmdPtr,		/* Points to command's Command struct. */
+    const char *command,	/* Points to the first character of the
+				 * command's source before substitutions. */
+    int numChars,		/* The number of characters in the command's
+				 * source. */
+    register int objc,		/* Number of arguments for the command. */
+    Tcl_Obj *const objv[])	/* Pointers to Tcl_Obj of each argument. */
+{
+    Interp *iPtr = (Interp *) interp;
+    char *commandCopy;
+    int traceCode;
+
+    /*
+     * Copy the command characters into a new string.
+     */
+
+    commandCopy = TclStackAlloc(interp, (unsigned) (numChars + 1));
+    memcpy(commandCopy, command, (size_t) numChars);
+    commandCopy[numChars] = '\0';
+
+    /*
+     * Call the trace function then free allocated storage.
+     */
+
+    traceCode = (tracePtr->proc)(tracePtr->clientData, (Tcl_Interp *) iPtr,
+	    iPtr->numLevels, commandCopy, (Tcl_Command) cmdPtr, objc, objv);
+
+    TclStackFree(interp, commandCopy);
+    return traceCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * CommandObjTraceDeleted --
+ *
+ *	Ensure the trace is correctly deleted by decrementing its refCount and
+ *	only deleting if no other references exist.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May release memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+CommandObjTraceDeleted(
+    ClientData clientData)
+{
+    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+
+    if ((--tcmdPtr->refCount) <= 0) {
+	ckfree((char *) tcmdPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceExecutionProc --
+ *
+ *	This function is invoked whenever code relevant to a 'trace execution'
+ *	command is executed. It is called in one of two ways in Tcl's core:
+ *
+ *	(i) by the TclCheckExecutionTraces, when an execution trace has been
+ *	triggered.
+ *	(ii) by TclCheckInterpTraces, when a prior execution trace has created
+ *	a trace of the internals of a procedure, passing in this function as
+ *	the one to be called.
+ *
+ * Results:
+ *	The return value is a standard Tcl completion code such as TCL_OK or
+ *	TCL_ERROR, etc.
+ *
+ * Side effects:
+ *	May invoke an arbitrary Tcl procedure, and may create or delete an
+ *	interpreter-wide trace.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraceExecutionProc(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int level,
+    const char *command,
+    Tcl_Command cmdInfo,
+    int objc,
+    struct Tcl_Obj *const objv[])
+{
+    int call = 0;
+    Interp *iPtr = (Interp *) interp;
+    TraceCommandInfo *tcmdPtr = (TraceCommandInfo *) clientData;
+    int flags = tcmdPtr->curFlags;
+    int code = tcmdPtr->curCode;
+    int traceCode = TCL_OK;
+
+    if (tcmdPtr->flags & TCL_TRACE_EXEC_IN_PROGRESS) {
+	/*
+	 * Inside any kind of execution trace callback, we do not allow any
+	 * further execution trace callbacks to be called for the same trace.
+	 */
+
+	return traceCode;
+    }
+
+    if (!Tcl_InterpDeleted(interp) && !Tcl_LimitExceeded(interp)) {
+	/*
+	 * Check whether the current call is going to eval arbitrary Tcl code
+	 * with a generated trace, or whether we are only going to setup
+	 * interpreter-wide traces to implement the 'step' traces. This latter
+	 * situation can happen if we create a command trace without either
+	 * before or after operations, but with either of the step operations.
+	 */
+
+	if (flags & TCL_TRACE_EXEC_DIRECT) {
+	    call = flags & tcmdPtr->flags &
+		    (TCL_TRACE_ENTER_EXEC | TCL_TRACE_LEAVE_EXEC);
+	} else {
+	    call = 1;
+	}
+
+	/*
+	 * First, if we have returned back to the level at which we created an
+	 * interpreter trace for enterstep and/or leavestep execution traces,
+	 * we remove it here.
+	 */
+
+	if ((flags & TCL_TRACE_LEAVE_EXEC) && (tcmdPtr->stepTrace != NULL)
+		&& (level == tcmdPtr->startLevel)
+		&& (strcmp(command, tcmdPtr->startCmd) == 0)) {
+	    Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
+	    tcmdPtr->stepTrace = NULL;
+	    if (tcmdPtr->startCmd != NULL) {
+		ckfree((char *) tcmdPtr->startCmd);
+	    }
+	}
+
+	/*
+	 * Second, create the tcl callback, if required.
+	 */
+
+	if (call) {
+	    Tcl_DString cmd;
+	    Tcl_DString sub;
+	    int i, saveInterpFlags;
+
+	    Tcl_DStringInit(&cmd);
+	    Tcl_DStringAppend(&cmd, tcmdPtr->command, (int)tcmdPtr->length);
+
+	    /*
+	     * Append command with arguments.
+	     */
+
+	    Tcl_DStringInit(&sub);
+	    for (i = 0; i < objc; i++) {
+		Tcl_DStringAppendElement(&sub, Tcl_GetString(objv[i]));
+	    }
+	    Tcl_DStringAppendElement(&cmd, Tcl_DStringValue(&sub));
+	    Tcl_DStringFree(&sub);
+
+	    if (flags & TCL_TRACE_ENTER_EXEC) {
+		/*
+		 * Append trace operation.
+		 */
+
+		if (flags & TCL_TRACE_EXEC_DIRECT) {
+		    Tcl_DStringAppendElement(&cmd, "enter");
+		} else {
+		    Tcl_DStringAppendElement(&cmd, "enterstep");
+		}
+	    } else if (flags & TCL_TRACE_LEAVE_EXEC) {
+		Tcl_Obj *resultCode;
+		char *resultCodeStr;
+
+		/*
+		 * Append result code.
+		 */
+
+		resultCode = Tcl_NewIntObj(code);
+		resultCodeStr = Tcl_GetString(resultCode);
+		Tcl_DStringAppendElement(&cmd, resultCodeStr);
+		Tcl_DecrRefCount(resultCode);
+
+		/*
+		 * Append result string.
+		 */
+
+		Tcl_DStringAppendElement(&cmd, Tcl_GetStringResult(interp));
+
+		/*
+		 * Append trace operation.
+		 */
+
+		if (flags & TCL_TRACE_EXEC_DIRECT) {
+		    Tcl_DStringAppendElement(&cmd, "leave");
+		} else {
+		    Tcl_DStringAppendElement(&cmd, "leavestep");
+		}
+	    } else {
+		Tcl_Panic("TraceExecutionProc: bad flag combination");
+	    }
+
+	    /*
+	     * Execute the command. We discard any object result the command
+	     * returns.
+	     */
+
+	    saveInterpFlags = iPtr->flags;
+	    iPtr->flags    |= INTERP_TRACE_IN_PROGRESS;
+	    tcmdPtr->flags |= TCL_TRACE_EXEC_IN_PROGRESS;
+	    tcmdPtr->refCount++;
+
+	    /*
+	     * This line can have quite arbitrary side-effects, including
+	     * deleting the trace, the command being traced, or even the
+	     * interpreter.
+	     */
+
+	    traceCode = Tcl_Eval(interp, Tcl_DStringValue(&cmd));
+	    tcmdPtr->flags &= ~TCL_TRACE_EXEC_IN_PROGRESS;
+
+	    /*
+	     * Restore the interp tracing flag to prevent cmd traces from
+	     * affecting interp traces.
+	     */
+
+	    iPtr->flags = saveInterpFlags;
+	    if (tcmdPtr->flags == 0) {
+		flags |= TCL_TRACE_DESTROYED;
+	    }
+	    Tcl_DStringFree(&cmd);
+	}
+
+	/*
+	 * Third, if there are any step execution traces for this proc, we
+	 * register an interpreter trace to invoke enterstep and/or leavestep
+	 * traces. We also need to save the current stack level and the proc
+	 * string in startLevel and startCmd so that we can delete this
+	 * interpreter trace when it reaches the end of this proc.
+	 */
+
+	if ((flags & TCL_TRACE_ENTER_EXEC) && (tcmdPtr->stepTrace == NULL)
+		&& (tcmdPtr->flags & (TCL_TRACE_ENTER_DURING_EXEC |
+			TCL_TRACE_LEAVE_DURING_EXEC))) {
+	    register unsigned len = strlen(command) + 1;
+
+	    tcmdPtr->startLevel = level;
+	    tcmdPtr->startCmd = ckalloc(len);
+	    memcpy(tcmdPtr->startCmd, command, len);
+	    tcmdPtr->refCount++;
+	    tcmdPtr->stepTrace = Tcl_CreateObjTrace(interp, 0,
+		   (tcmdPtr->flags & TCL_TRACE_ANY_EXEC) >> 2,
+		   TraceExecutionProc, (ClientData)tcmdPtr,
+		   CommandObjTraceDeleted);
+	}
+    }
+    if (flags & TCL_TRACE_DESTROYED) {
+	if (tcmdPtr->stepTrace != NULL) {
+	    Tcl_DeleteTrace(interp, tcmdPtr->stepTrace);
+	    tcmdPtr->stepTrace = NULL;
+	    if (tcmdPtr->startCmd != NULL) {
+		ckfree(tcmdPtr->startCmd);
+	    }
+	}
+    }
+    if (call) {
+	if ((--tcmdPtr->refCount) <= 0) {
+	    ckfree((char *) tcmdPtr);
+	}
+    }
+    return traceCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceVarProc --
+ *
+ *	This function is called to handle variable accesses that have been
+ *	traced using the "trace" command.
+ *
+ * Results:
+ *	Normally returns NULL. If the trace command returns an error, then
+ *	this function returns an error string.
+ *
+ * Side effects:
+ *	Depends on the command associated with the trace.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static char *
+TraceVarProc(
+    ClientData clientData,	/* Information about the variable trace. */
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    const char *name1,		/* Name of variable or array. */
+    const char *name2,		/* Name of element within array; NULL means
+				 * scalar variable is being referenced. */
+    int flags)			/* OR-ed bits giving operation and other
+				 * information. */
+{
+    TraceVarInfo *tvarPtr = (TraceVarInfo *) clientData;
+    char *result;
+    int code, destroy = 0;
+    Tcl_DString cmd;
+
+    /*
+     * We might call Tcl_Eval() below, and that might evaluate [trace vdelete]
+     * which might try to free tvarPtr. We want to use tvarPtr until the end
+     * of this function, so we use Tcl_Preserve() and Tcl_Release() to be sure
+     * it is not freed while we still need it.
+     */
+
+    result = NULL;
+    if ((tvarPtr->flags & flags) && !Tcl_InterpDeleted(interp)
+	    && !Tcl_LimitExceeded(interp)) {
+	if (tvarPtr->length != (size_t) 0) {
+	    /*
+	     * Generate a command to execute by appending list elements for
+	     * the two variable names and the operation.
+	     */
+
+	    Tcl_DStringInit(&cmd);
+	    Tcl_DStringAppend(&cmd, tvarPtr->command, (int) tvarPtr->length);
+	    Tcl_DStringAppendElement(&cmd, name1);
+	    Tcl_DStringAppendElement(&cmd, (name2 ? name2 : ""));
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+	    if (tvarPtr->flags & TCL_TRACE_OLD_STYLE) {
+		if (flags & TCL_TRACE_ARRAY) {
+		    Tcl_DStringAppend(&cmd, " a", 2);
+		} else if (flags & TCL_TRACE_READS) {
+		    Tcl_DStringAppend(&cmd, " r", 2);
+		} else if (flags & TCL_TRACE_WRITES) {
+		    Tcl_DStringAppend(&cmd, " w", 2);
+		} else if (flags & TCL_TRACE_UNSETS) {
+		    Tcl_DStringAppend(&cmd, " u", 2);
+		}
+	    } else {
+#endif
+		if (flags & TCL_TRACE_ARRAY) {
+		    Tcl_DStringAppend(&cmd, " array", 6);
+		} else if (flags & TCL_TRACE_READS) {
+		    Tcl_DStringAppend(&cmd, " read", 5);
+		} else if (flags & TCL_TRACE_WRITES) {
+		    Tcl_DStringAppend(&cmd, " write", 6);
+		} else if (flags & TCL_TRACE_UNSETS) {
+		    Tcl_DStringAppend(&cmd, " unset", 6);
+		}
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+	    }
+#endif
+
+	    /*
+	     * Execute the command. We discard any object result the command
+	     * returns.
+	     *
+	     * Add the TCL_TRACE_DESTROYED flag to tvarPtr to indicate to
+	     * other areas that this will be destroyed by us, otherwise a
+	     * double-free might occur depending on what the eval does.
+	     */
+
+	    if ((flags & TCL_TRACE_DESTROYED)
+		    && !(tvarPtr->flags & TCL_TRACE_DESTROYED)) {
+		destroy = 1;
+		tvarPtr->flags |= TCL_TRACE_DESTROYED;
+	    }
+	    code = Tcl_EvalEx(interp, Tcl_DStringValue(&cmd),
+		    Tcl_DStringLength(&cmd), 0);
+	    if (code != TCL_OK) {		/* copy error msg to result */
+		Tcl_Obj *errMsgObj = Tcl_GetObjResult(interp);
+		Tcl_IncrRefCount(errMsgObj);
+		result = (char *) errMsgObj;
+	    }
+	    Tcl_DStringFree(&cmd);
+	}
+    }
+    if (destroy && result != NULL) {
+	register Tcl_Obj *errMsgObj = (Tcl_Obj *) result;
+
+	Tcl_DecrRefCount(errMsgObj);
+	result = NULL;
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CreateObjTrace --
+ *
+ *	Arrange for a function to be called to trace command execution.
+ *
+ * Results:
+ *	The return value is a token for the trace, which may be passed to
+ *	Tcl_DeleteTrace to eliminate the trace.
+ *
+ * Side effects:
+ *	From now on, proc will be called just before a command function is
+ *	called to execute a Tcl command. Calls to proc will have the following
+ *	form:
+ *
+ *	void proc(ClientData	 clientData,
+ *		  Tcl_Interp *	 interp,
+ *		  int		 level,
+ *		  const char *	 command,
+ *		  Tcl_Command	 commandInfo,
+ *		  int		 objc,
+ *		  Tcl_Obj *const objv[]);
+ *
+ *	The 'clientData' and 'interp' arguments to 'proc' will be the same as
+ *	the arguments to Tcl_CreateObjTrace. The 'level' argument gives the
+ *	nesting depth of command interpretation within the interpreter. The
+ *	'command' argument is the ASCII text of the command being evaluated -
+ *	before any substitutions are performed. The 'commandInfo' argument
+ *	gives a handle to the command procedure that will be evaluated. The
+ *	'objc' and 'objv' parameters give the parameter vector that will be
+ *	passed to the command procedure. Proc does not return a value.
+ *
+ *	It is permissible for 'proc' to call Tcl_SetCommandTokenInfo to change
+ *	the command procedure or client data for the command being evaluated,
+ *	and these changes will take effect with the current evaluation.
+ *
+ *	The 'level' argument specifies the maximum nesting level of calls to
+ *	be traced. If the execution depth of the interpreter exceeds 'level',
+ *	the trace callback is not executed.
+ *
+ *	The 'flags' argument is either zero or the value,
+ *	TCL_ALLOW_INLINE_COMPILATION. If the TCL_ALLOW_INLINE_COMPILATION flag
+ *	is not present, the bytecode compiler will not generate inline code
+ *	for Tcl's built-in commands. This behavior will have a significant
+ *	impact on performance, but will ensure that all command evaluations
+ *	are traced. If the TCL_ALLOW_INLINE_COMPILATION flag is present, the
+ *	bytecode compiler will have its normal behavior of compiling in-line
+ *	code for some of Tcl's built-in commands. In this case, the tracing
+ *	will be imprecise - in-line code will not be traced - but run-time
+ *	performance will be improved. The latter behavior is desired for many
+ *	applications such as profiling of run time.
+ *
+ *	When the trace is deleted, the 'delProc' function will be invoked,
+ *	passing it the original client data.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Trace
+Tcl_CreateObjTrace(
+    Tcl_Interp *interp,		/* Tcl interpreter */
+    int level,			/* Maximum nesting level */
+    int flags,			/* Flags, see above */
+    Tcl_CmdObjTraceProc *proc,	/* Trace callback */
+    ClientData clientData,	/* Client data for the callback */
+    Tcl_CmdObjTraceDeleteProc *delProc)
+				/* Function to call when trace is deleted */
+{
+    register Trace *tracePtr;
+    register Interp *iPtr = (Interp *) interp;
+
+    /*
+     * Test if this trace allows inline compilation of commands.
+     */
+
+    if (!(flags & TCL_ALLOW_INLINE_COMPILATION)) {
+	if (iPtr->tracesForbiddingInline == 0) {
+	    /*
+	     * When the first trace forbidding inline compilation is created,
+	     * invalidate existing compiled code for this interpreter and
+	     * arrange (by setting the DONT_COMPILE_CMDS_INLINE flag) that
+	     * when compiling new code, no commands will be compiled inline
+	     * (i.e., into an inline sequence of instructions). We do this
+	     * because commands that were compiled inline will never result in
+	     * a command trace being called.
+	     */
+
+	    iPtr->compileEpoch++;
+	    iPtr->flags |= DONT_COMPILE_CMDS_INLINE;
+	}
+	iPtr->tracesForbiddingInline++;
+    }
+
+    tracePtr = (Trace *) ckalloc(sizeof(Trace));
+    tracePtr->level = level;
+    tracePtr->proc = proc;
+    tracePtr->clientData = clientData;
+    tracePtr->delProc = delProc;
+    tracePtr->nextPtr = iPtr->tracePtr;
+    tracePtr->flags = flags;
+    iPtr->tracePtr = tracePtr;
+
+    return (Tcl_Trace) tracePtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_CreateTrace --
+ *
+ *	Arrange for a function to be called to trace command execution.
+ *
+ * Results:
+ *	The return value is a token for the trace, which may be passed to
+ *	Tcl_DeleteTrace to eliminate the trace.
+ *
+ * Side effects:
+ *	From now on, proc will be called just before a command procedure is
+ *	called to execute a Tcl command. Calls to proc will have the following
+ *	form:
+ *
+ *	void
+ *	proc(clientData, interp, level, command, cmdProc, cmdClientData,
+ *		argc, argv)
+ *	    ClientData clientData;
+ *	    Tcl_Interp *interp;
+ *	    int level;
+ *	    char *command;
+ *	    int (*cmdProc)();
+ *	    ClientData cmdClientData;
+ *	    int argc;
+ *	    char **argv;
+ *	{
+ *	}
+ *
+ *	The clientData and interp arguments to proc will be the same as the
+ *	corresponding arguments to this function. Level gives the nesting
+ *	level of command interpretation for this interpreter (0 corresponds to
+ *	top level). Command gives the ASCII text of the raw command, cmdProc
+ *	and cmdClientData give the function that will be called to process the
+ *	command and the ClientData value it will receive, and argc and argv
+ *	give the arguments to the command, after any argument parsing and
+ *	substitution. Proc does not return a value.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Trace
+Tcl_CreateTrace(
+    Tcl_Interp *interp,		/* Interpreter in which to create trace. */
+    int level,			/* Only call proc for commands at nesting
+				 * level<=argument level (1=>top level). */
+    Tcl_CmdTraceProc *proc,	/* Function to call before executing each
+				 * command. */
+    ClientData clientData)	/* Arbitrary value word to pass to proc. */
+{
+    StringTraceData *data = (StringTraceData *)
+	    ckalloc(sizeof(StringTraceData));
+
+    data->clientData = clientData;
+    data->proc = proc;
+    return Tcl_CreateObjTrace(interp, level, 0, StringTraceProc,
+	    (ClientData) data, StringTraceDeleteProc);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringTraceProc --
+ *
+ *	Invoke a string-based trace function from an object-based callback.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Whatever the string-based trace function does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+StringTraceProc(
+    ClientData clientData,
+    Tcl_Interp *interp,
+    int level,
+    const char *command,
+    Tcl_Command commandInfo,
+    int objc,
+    Tcl_Obj *const *objv)
+{
+    StringTraceData *data = (StringTraceData *) clientData;
+    Command *cmdPtr = (Command *) commandInfo;
+    const char **argv;		/* Args to pass to string trace proc */
+    int i;
+
+    /*
+     * This is a bit messy because we have to emulate the old trace interface,
+     * which uses strings for everything.
+     */
+
+    argv = (const char **) TclStackAlloc(interp,
+	    (unsigned) ((objc + 1) * sizeof(const char *)));
+    for (i = 0; i < objc; i++) {
+	argv[i] = Tcl_GetString(objv[i]);
+    }
+    argv[objc] = 0;
+
+    /*
+     * Invoke the command function. Note that we cast away const-ness on two
+     * parameters for compatibility with legacy code; the code MUST NOT modify
+     * either command or argv.
+     */
+
+    (data->proc)(data->clientData, interp, level, (char *) command,
+	    cmdPtr->proc, cmdPtr->clientData, objc, argv);
+    TclStackFree(interp, (void *) argv);
+
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * StringTraceDeleteProc --
+ *
+ *	Clean up memory when a string-based trace is deleted.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Allocated memory is returned to the system.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+StringTraceDeleteProc(
+    ClientData clientData)
+{
+    ckfree((char *) clientData);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_DeleteTrace --
+ *
+ *	Remove a trace.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	From now on there will be no more calls to the function given in
+ *	trace.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_DeleteTrace(
+    Tcl_Interp *interp,		/* Interpreter that contains trace. */
+    Tcl_Trace trace)		/* Token for trace (returned previously by
+				 * Tcl_CreateTrace). */
+{
+    Interp *iPtr = (Interp *) interp;
+    Trace *prevPtr, *tracePtr = (Trace *) trace;
+    register Trace **tracePtr2 = &(iPtr->tracePtr);
+    ActiveInterpTrace *activePtr;
+
+    /*
+     * Locate the trace entry in the interpreter's trace list, and remove it
+     * from the list.
+     */
+
+    prevPtr = NULL;
+    while ((*tracePtr2) != NULL && (*tracePtr2) != tracePtr) {
+	prevPtr = *tracePtr2;
+	tracePtr2 = &((*tracePtr2)->nextPtr);
+    }
+    if (*tracePtr2 == NULL) {
+	return;
+    }
+    (*tracePtr2) = (*tracePtr2)->nextPtr;
+
+    /*
+     * The code below makes it possible to delete traces while traces are
+     * active: it makes sure that the deleted trace won't be processed by
+     * TclCheckInterpTraces.
+     */
+
+    for (activePtr = iPtr->activeInterpTracePtr;  activePtr != NULL;
+	    activePtr = activePtr->nextPtr) {
+	if (activePtr->nextTracePtr == tracePtr) {
+	    if (activePtr->reverseScan) {
+		activePtr->nextTracePtr = prevPtr;
+	    } else {
+		activePtr->nextTracePtr = tracePtr->nextPtr;
+	    }
+	}
+    }
+
+    /*
+     * If the trace forbids bytecode compilation, change the interpreter's
+     * state. If bytecode compilation is now permitted, flag the fact and
+     * advance the compilation epoch so that procs will be recompiled to take
+     * advantage of it.
+     */
+
+    if (!(tracePtr->flags & TCL_ALLOW_INLINE_COMPILATION)) {
+	iPtr->tracesForbiddingInline--;
+	if (iPtr->tracesForbiddingInline == 0) {
+	    iPtr->flags &= ~DONT_COMPILE_CMDS_INLINE;
+	    iPtr->compileEpoch++;
+	}
+    }
+
+    /*
+     * Execute any delete callback.
+     */
+
+    if (tracePtr->delProc != NULL) {
+	(tracePtr->delProc)(tracePtr->clientData);
+    }
+
+    /*
+     * Delete the trace object.
+     */
+
+    Tcl_EventuallyFree((char *) tracePtr, TCL_DYNAMIC);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclTraceVarExists --
+ *
+ *	This is called from info exists. We need to trigger read and/or array
+ *	traces because they may end up creating a variable that doesn't
+ *	currently exist.
+ *
+ * Results:
+ *	A pointer to the Var structure, or NULL.
+ *
+ * Side effects:
+ *	May fill in error messages in the interp.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Var *
+TclVarTraceExists(
+    Tcl_Interp *interp,		/* The interpreter */
+    const char *varName)	/* The variable name */
+{
+    Var *varPtr;
+    Var *arrayPtr;
+
+    /*
+     * The choice of "create" flag values is delicate here, and matches the
+     * semantics of GetVar. Things are still not perfect, however, because if
+     * you do "info exists x" you get a varPtr and therefore trigger traces.
+     * However, if you do "info exists x(i)", then you only get a varPtr if x
+     * is already known to be an array. Otherwise you get NULL, and no trace
+     * is triggered. This matches Tcl 7.6 semantics.
+     */
+
+    varPtr = TclLookupVar(interp, varName, NULL, 0, "access",
+	    /*createPart1*/ 0, /*createPart2*/ 1, &arrayPtr);
+
+    if (varPtr == NULL) {
+	return NULL;
+    }
+
+    if ((varPtr->flags & VAR_TRACED_READ)
+	    || (arrayPtr && (arrayPtr->flags & VAR_TRACED_READ))) {
+	TclCallVarTraces((Interp *)interp, arrayPtr, varPtr, varName, NULL,
+		TCL_TRACE_READS, /* leaveErrMsg */ 0);
+    }
+
+    /*
+     * If the variable doesn't exist anymore and no-one's using it, then free
+     * up the relevant structures and hash table entries.
+     */
+
+    if (TclIsVarUndefined(varPtr)) {
+	TclCleanupVar(varPtr, arrayPtr);
+	return NULL;
+    }
+
+    return varPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCallVarTraces --
+ *
+ *	This function is invoked to find and invoke relevant trace functions
+ *	associated with a particular operation on a variable. This function
+ *	invokes traces both on the variable and on its containing array (where
+ *	relevant).
+ *
+ * Results:
+ *	Returns TCL_OK to indicate normal operation. Returns TCL_ERROR if
+ *	invocation of a trace function indicated an error. When TCL_ERROR is
+ *	returned and leaveErrMsg is true, then the errorInfo field of iPtr has
+ *	information about the error placed in it.
+ *
+ * Side effects:
+ *	Almost anything can happen, depending on trace; this function itself
+ *	doesn't have any side effects.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclObjCallVarTraces(
+    Interp *iPtr,		/* Interpreter containing variable. */
+    register Var *arrayPtr,	/* Pointer to array variable that contains the
+				 * variable, or NULL if the variable isn't an
+				 * element of an array. */
+    Var *varPtr,		/* Variable whose traces are to be invoked. */
+    Tcl_Obj *part1Ptr,
+    Tcl_Obj *part2Ptr,		/* Variable's two-part name. */
+    int flags,			/* Flags passed to trace functions: indicates
+				 * what's happening to variable, plus maybe
+				 * TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY */
+    int leaveErrMsg,		/* If true, and one of the traces indicates an
+				 * error, then leave an error message and
+				 * stack trace information in *iPTr. */
+    int index)			/* Index into the local variable table of the
+				 * variable, or -1. Only used when part1Ptr is
+				 * NULL. */
+{
+    char *part1, *part2;
+
+    if (!part1Ptr) {
+	part1Ptr = localName(iPtr->varFramePtr, index);
+    }
+    part1 = TclGetString(part1Ptr);
+    part2 = part2Ptr? TclGetString(part2Ptr) : NULL;
+
+    return TclCallVarTraces(iPtr, arrayPtr, varPtr, part1, part2, flags,
+	    leaveErrMsg);
+}
+
+int
+TclCallVarTraces(
+    Interp *iPtr,		/* Interpreter containing variable. */
+    register Var *arrayPtr,	/* Pointer to array variable that contains the
+				 * variable, or NULL if the variable isn't an
+				 * element of an array. */
+    Var *varPtr,		/* Variable whose traces are to be invoked. */
+    const char *part1,
+    const char *part2,		/* Variable's two-part name. */
+    int flags,			/* Flags passed to trace functions: indicates
+				 * what's happening to variable, plus maybe
+				 * TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY */
+    int leaveErrMsg)		/* If true, and one of the traces indicates an
+				 * error, then leave an error message and
+				 * stack trace information in *iPTr. */
+{
+    register VarTrace *tracePtr;
+    ActiveVarTrace active;
+    char *result;
+    const char *openParen, *p;
+    Tcl_DString nameCopy;
+    int copiedName;
+    int code = TCL_OK;
+    int disposeFlags = 0;
+    Tcl_InterpState state = NULL;
+    Tcl_HashEntry *hPtr;
+    int traceflags = flags & VAR_ALL_TRACES;
+
+    /*
+     * If there are already similar trace functions active for the variable,
+     * don't call them again.
+     */
+
+    if (TclIsVarTraceActive(varPtr)) {
+	return code;
+    }
+    TclSetVarTraceActive(varPtr);
+    if (TclIsVarInHash(varPtr)) {
+	VarHashRefCount(varPtr)++;
+    }
+    if (arrayPtr && TclIsVarInHash(arrayPtr)) {
+	VarHashRefCount(arrayPtr)++;
+    }
+
+    /*
+     * If the variable name hasn't been parsed into array name and element, do
+     * it here. If there really is an array element, make a copy of the
+     * original name so that NULLs can be inserted into it to separate the
+     * names (can't modify the name string in place, because the string might
+     * get used by the callbacks we invoke).
+     */
+
+    copiedName = 0;
+    if (part2 == NULL) {
+	for (p = part1; *p ; p++) {
+	    if (*p == '(') {
+		openParen = p;
+		do {
+		    p++;
+		} while (*p != '\0');
+		p--;
+		if (*p == ')') {
+		    int offset = (openParen - part1);
+		    char *newPart1;
+
+		    Tcl_DStringInit(&nameCopy);
+		    Tcl_DStringAppend(&nameCopy, part1, (p-part1));
+		    newPart1 = Tcl_DStringValue(&nameCopy);
+		    newPart1[offset] = 0;
+		    part1 = newPart1;
+		    part2 = newPart1 + offset + 1;
+		    copiedName = 1;
+		}
+		break;
+	    }
+	}
+    }
+
+    /*
+     * Ignore any caller-provided TCL_INTERP_DESTROYED flag.  Only we can
+     * set it correctly.
+     */
+
+    flags &= ~TCL_INTERP_DESTROYED;
+
+    /*
+     * Invoke traces on the array containing the variable, if relevant.
+     */
+
+    result = NULL;
+    active.nextPtr = iPtr->activeVarTracePtr;
+    iPtr->activeVarTracePtr = &active;
+    Tcl_Preserve((ClientData) iPtr);
+    if (arrayPtr && !TclIsVarTraceActive(arrayPtr)
+	    && (arrayPtr->flags & traceflags)) {
+	hPtr = Tcl_FindHashEntry(&iPtr->varTraces, (char *) arrayPtr);
+	active.varPtr = arrayPtr;
+	for (tracePtr = (VarTrace *) Tcl_GetHashValue(hPtr);
+	     tracePtr != NULL; tracePtr = active.nextTracePtr) {
+	    active.nextTracePtr = tracePtr->nextPtr;
+	    if (!(tracePtr->flags & flags)) {
+		continue;
+	    }
+	    Tcl_Preserve((ClientData) tracePtr);
+	    if (state == NULL) {
+		state = Tcl_SaveInterpState((Tcl_Interp *)iPtr, code);
+	    }
+	    if (Tcl_InterpDeleted((Tcl_Interp *)iPtr)) {
+		flags |= TCL_INTERP_DESTROYED;
+	    }
+	    result = (*tracePtr->traceProc)(tracePtr->clientData,
+		    (Tcl_Interp *) iPtr, part1, part2, flags);
+	    if (result != NULL) {
+		if (flags & TCL_TRACE_UNSETS) {
+		    /*
+		     * Ignore errors in unset traces.
+		     */
+
+		    DisposeTraceResult(tracePtr->flags, result);
+		} else {
+		    disposeFlags = tracePtr->flags;
+		    code = TCL_ERROR;
+		}
+	    }
+	    Tcl_Release((ClientData) tracePtr);
+	    if (code == TCL_ERROR) {
+		goto done;
+	    }
+	}
+    }
+
+    /*
+     * Invoke traces on the variable itself.
+     */
+
+    if (flags & TCL_TRACE_UNSETS) {
+	flags |= TCL_TRACE_DESTROYED;
+    }
+    active.varPtr = varPtr;
+    if (varPtr->flags & traceflags) {
+	hPtr = Tcl_FindHashEntry(&iPtr->varTraces, (char *) varPtr);
+	for (tracePtr = (VarTrace *) Tcl_GetHashValue(hPtr);
+	     tracePtr != NULL; tracePtr = active.nextTracePtr) {
+	    active.nextTracePtr = tracePtr->nextPtr;
+	    if (!(tracePtr->flags & flags)) {
+		continue;
+	    }
+	    Tcl_Preserve((ClientData) tracePtr);
+	    if (state == NULL) {
+		state = Tcl_SaveInterpState((Tcl_Interp *)iPtr, code);
+	    }
+	    if (Tcl_InterpDeleted((Tcl_Interp *)iPtr)) {
+		flags |= TCL_INTERP_DESTROYED;
+	    }
+	    result = (*tracePtr->traceProc)(tracePtr->clientData,
+		    (Tcl_Interp *) iPtr, part1, part2, flags);
+	    if (result != NULL) {
+		if (flags & TCL_TRACE_UNSETS) {
+		    /*
+		     * Ignore errors in unset traces.
+		     */
+
+		    DisposeTraceResult(tracePtr->flags, result);
+		} else {
+		    disposeFlags = tracePtr->flags;
+		    code = TCL_ERROR;
+		}
+	    }
+	    Tcl_Release((ClientData) tracePtr);
+	    if (code == TCL_ERROR) {
+		goto done;
+	    }
+	}
+    }
+
+    /*
+     * Restore the variable's flags, remove the record of our active traces,
+     * and then return.
+     */
+
+  done:
+    if (code == TCL_ERROR) {
+	if (leaveErrMsg) {
+	    const char *verb = "";
+	    const char *type = "";
+
+	    switch (flags&(TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_ARRAY)) {
+	    case TCL_TRACE_READS:
+		verb = "read";
+		type = verb;
+		break;
+	    case TCL_TRACE_WRITES:
+		verb = "set";
+		type = "write";
+		break;
+	    case TCL_TRACE_ARRAY:
+		verb = "trace array";
+		type = "array";
+		break;
+	    }
+
+	    if (disposeFlags & TCL_TRACE_RESULT_OBJECT) {
+		Tcl_SetObjResult((Tcl_Interp *)iPtr, (Tcl_Obj *) result);
+	    } else {
+		Tcl_SetResult((Tcl_Interp *)iPtr, result, TCL_STATIC);
+	    }
+	    Tcl_AddErrorInfo((Tcl_Interp *)iPtr, "");
+
+	    Tcl_AppendObjToErrorInfo((Tcl_Interp *)iPtr, Tcl_ObjPrintf(
+		    "\n    (%s trace on \"%s%s%s%s\")", type, part1,
+		    (part2 ? "(" : ""), (part2 ? part2 : ""),
+		    (part2 ? ")" : "") ));
+	    if (disposeFlags & TCL_TRACE_RESULT_OBJECT) {
+		TclVarErrMsg((Tcl_Interp *) iPtr, part1, part2, verb,
+			Tcl_GetString((Tcl_Obj *) result));
+	    } else {
+		TclVarErrMsg((Tcl_Interp *) iPtr, part1, part2, verb, result);
+	    }
+	    iPtr->flags &= ~(ERR_ALREADY_LOGGED);
+	    Tcl_DiscardInterpState(state);
+	} else {
+	    (void) Tcl_RestoreInterpState((Tcl_Interp *)iPtr, state);
+	}
+	DisposeTraceResult(disposeFlags,result);
+    } else if (state) {
+	if (code == TCL_OK) {
+	    code = Tcl_RestoreInterpState((Tcl_Interp *)iPtr, state);
+	} else {
+	    Tcl_DiscardInterpState(state);
+	}
+    }
+
+    if (arrayPtr && TclIsVarInHash(arrayPtr)) {
+	VarHashRefCount(arrayPtr)--;
+    }
+    if (copiedName) {
+	Tcl_DStringFree(&nameCopy);
+    }
+    TclClearVarTraceActive(varPtr);
+    if (TclIsVarInHash(varPtr)) {
+	VarHashRefCount(varPtr)--;
+    }
+    iPtr->activeVarTracePtr = active.nextPtr;
+    Tcl_Release((ClientData) iPtr);
+    return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * DisposeTraceResult--
+ *
+ *	This function is called to dispose of the result returned from a trace
+ *	function. The disposal method appropriate to the type of result is
+ *	determined by flags.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	The memory allocated for the trace result may be freed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DisposeTraceResult(
+    int flags,			/* Indicates type of result to determine
+				 * proper disposal method. */
+    char *result)		/* The result returned from a trace function
+				 * to be disposed. */
+{
+    if (flags & TCL_TRACE_RESULT_DYNAMIC) {
+	ckfree(result);
+    } else if (flags & TCL_TRACE_RESULT_OBJECT) {
+	Tcl_DecrRefCount((Tcl_Obj *) result);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_UntraceVar --
+ *
+ *	Remove a previously-created trace for a variable.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If there exists a trace for the variable given by varName with the
+ *	given flags, proc, and clientData, then that trace is removed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_UntraceVar(
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    const char *varName,	/* Name of variable; may end with "(index)" to
+				 * signify an array reference. */
+    int flags,			/* OR-ed collection of bits describing current
+				 * trace, including any of TCL_TRACE_READS,
+				 * TCL_TRACE_WRITES, TCL_TRACE_UNSETS,
+				 * TCL_GLOBAL_ONLY and TCL_NAMESPACE_ONLY. */
+    Tcl_VarTraceProc *proc,	/* Function assocated with trace. */
+    ClientData clientData)	/* Arbitrary argument to pass to proc. */
+{
+    Tcl_UntraceVar2(interp, varName, NULL, flags, proc, clientData);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_UntraceVar2 --
+ *
+ *	Remove a previously-created trace for a variable.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If there exists a trace for the variable given by part1 and part2 with
+ *	the given flags, proc, and clientData, then that trace is removed.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+Tcl_UntraceVar2(
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    const char *part1,		/* Name of variable or array. */
+    const char *part2,		/* Name of element within array; NULL means
+				 * trace applies to scalar variable or array
+				 * as-a-whole. */
+    int flags,			/* OR-ed collection of bits describing current
+				 * trace, including any of TCL_TRACE_READS,
+				 * TCL_TRACE_WRITES, TCL_TRACE_UNSETS,
+				 * TCL_GLOBAL_ONLY, and TCL_NAMESPACE_ONLY. */
+    Tcl_VarTraceProc *proc,	/* Function assocated with trace. */
+    ClientData clientData)	/* Arbitrary argument to pass to proc. */
+{
+    register VarTrace *tracePtr;
+    VarTrace *prevPtr, *nextPtr;
+    Var *varPtr, *arrayPtr;
+    Interp *iPtr = (Interp *) interp;
+    ActiveVarTrace *activePtr;
+    int flagMask, allFlags = 0;
+    Tcl_HashEntry *hPtr;
+
+    /*
+     * Set up a mask to mask out the parts of the flags that we are not
+     * interested in now.
+     */
+
+    flagMask = TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY;
+    varPtr = TclLookupVar(interp, part1, part2, flags & flagMask, /*msg*/ NULL,
+	    /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
+    if (varPtr == NULL || !(varPtr->flags & VAR_ALL_TRACES & flags)) {
+	return;
+    }
+
+    /*
+     * Set up a mask to mask out the parts of the flags that we are not
+     * interested in now.
+     */
+
+    flagMask = TCL_TRACE_READS | TCL_TRACE_WRITES | TCL_TRACE_UNSETS |
+	  TCL_TRACE_ARRAY | TCL_TRACE_RESULT_DYNAMIC | TCL_TRACE_RESULT_OBJECT;
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+    flagMask |= TCL_TRACE_OLD_STYLE;
+#endif
+    flags &= flagMask;
+
+    hPtr = Tcl_FindHashEntry(&iPtr->varTraces,
+	    (char *) varPtr);
+    for (tracePtr = (VarTrace *) Tcl_GetHashValue(hPtr), prevPtr = NULL; ;
+	    prevPtr = tracePtr, tracePtr = tracePtr->nextPtr) {
+	if (tracePtr == NULL) {
+	    goto updateFlags;
+	}
+	if ((tracePtr->traceProc == proc) && (tracePtr->flags == flags)
+		&& (tracePtr->clientData == clientData)) {
+	    break;
+	}
+	allFlags |= tracePtr->flags;
+    }
+
+    /*
+     * The code below makes it possible to delete traces while traces are
+     * active: it makes sure that the deleted trace won't be processed by
+     * TclCallVarTraces.
+     *
+     * Caveat (Bug 3062331): When an unset trace handler on a variable
+     * tries to delete a different unset trace handler on the same variable,
+     * the results may be surprising.  When variable unset traces fire, the
+     * traced variable is already gone.  So the TclLookupVar() call above
+     * will not find that variable, and not finding it will never reach here
+     * to perform the deletion.  This means callers of Tcl_UntraceVar*()
+     * attempting to delete unset traces from within the handler of another
+     * unset trace have to account for the possibility that their call to
+     * Tcl_UntraceVar*() is a no-op.
+     */
+
+    for (activePtr = iPtr->activeVarTracePtr;  activePtr != NULL;
+	    activePtr = activePtr->nextPtr) {
+	if (activePtr->nextTracePtr == tracePtr) {
+	    activePtr->nextTracePtr = tracePtr->nextPtr;
+	}
+    }
+    nextPtr = tracePtr->nextPtr;
+    if (prevPtr == NULL) {
+	if (nextPtr) {
+	    Tcl_SetHashValue(hPtr, nextPtr);
+	} else {
+	    Tcl_DeleteHashEntry(hPtr);
+	}
+    } else {
+	prevPtr->nextPtr = nextPtr;
+    }
+    tracePtr->nextPtr = NULL;
+    Tcl_EventuallyFree((ClientData) tracePtr, TCL_DYNAMIC);
+
+    for (tracePtr = nextPtr; tracePtr != NULL;
+	    tracePtr = tracePtr->nextPtr) {
+	allFlags |= tracePtr->flags;
+    }
+
+  updateFlags:
+    varPtr->flags &= ~VAR_ALL_TRACES;
+    if (allFlags & VAR_ALL_TRACES) {
+	varPtr->flags |= (allFlags & VAR_ALL_TRACES);
+    } else if (TclIsVarUndefined(varPtr)) {
+	/*
+	 * If this is the last trace on the variable, and the variable is
+	 * unset and unused, then free up the variable.
+	 */
+
+	TclCleanupVar(varPtr, NULL);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_VarTraceInfo --
+ *
+ *	Return the clientData value associated with a trace on a variable.
+ *	This function can also be used to step through all of the traces on a
+ *	particular variable that have the same trace function.
+ *
+ * Results:
+ *	The return value is the clientData value associated with a trace on
+ *	the given variable. Information will only be returned for a trace with
+ *	proc as trace function. If the clientData argument is NULL then the
+ *	first such trace is returned; otherwise, the next relevant one after
+ *	the one given by clientData will be returned. If the variable doesn't
+ *	exist, or if there are no (more) traces for it, then NULL is returned.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ClientData
+Tcl_VarTraceInfo(
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    const char *varName,	/* Name of variable; may end with "(index)" to
+				 * signify an array reference. */
+    int flags,			/* OR-ed combo or TCL_GLOBAL_ONLY,
+				 * TCL_NAMESPACE_ONLY (can be 0). */
+    Tcl_VarTraceProc *proc,	/* Function assocated with trace. */
+    ClientData prevClientData)	/* If non-NULL, gives last value returned by
+				 * this function, so this call will return the
+				 * next trace after that one. If NULL, this
+				 * call will return the first trace. */
+{
+    return Tcl_VarTraceInfo2(interp, varName, NULL, flags, proc,
+	    prevClientData);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_VarTraceInfo2 --
+ *
+ *	Same as Tcl_VarTraceInfo, except takes name in two pieces instead of
+ *	one.
+ *
+ * Results:
+ *	Same as Tcl_VarTraceInfo.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+ClientData
+Tcl_VarTraceInfo2(
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    const char *part1,		/* Name of variable or array. */
+    const char *part2,		/* Name of element within array; NULL means
+				 * trace applies to scalar variable or array
+				 * as-a-whole. */
+    int flags,			/* OR-ed combination of TCL_GLOBAL_ONLY,
+				 * TCL_NAMESPACE_ONLY. */
+    Tcl_VarTraceProc *proc,	/* Function assocated with trace. */
+    ClientData prevClientData)	/* If non-NULL, gives last value returned by
+				 * this function, so this call will return the
+				 * next trace after that one. If NULL, this
+				 * call will return the first trace. */
+{
+    Interp *iPtr = (Interp *) interp;
+    register VarTrace *tracePtr;
+    Var *varPtr, *arrayPtr;
+    Tcl_HashEntry *hPtr;
+
+    varPtr = TclLookupVar(interp, part1, part2,
+	    flags & (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY), /*msg*/ NULL,
+	    /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
+    if (varPtr == NULL) {
+	return NULL;
+    }
+
+    /*
+     * Find the relevant trace, if any, and return its clientData.
+     */
+
+    hPtr = Tcl_FindHashEntry(&iPtr->varTraces,
+	    (char *) varPtr);
+
+    if (hPtr) {
+	tracePtr = Tcl_GetHashValue(hPtr);
+
+	if (prevClientData != NULL) {
+	    for ( ;  tracePtr != NULL;  tracePtr = tracePtr->nextPtr) {
+		if ((tracePtr->clientData == prevClientData)
+			&& (tracePtr->traceProc == proc)) {
+		    tracePtr = tracePtr->nextPtr;
+		    break;
+		}
+	    }
+	}
+	for (; tracePtr!=NULL ; tracePtr=tracePtr->nextPtr) {
+	    if (tracePtr->traceProc == proc) {
+		return tracePtr->clientData;
+	    }
+	}
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_TraceVar --
+ *
+ *	Arrange for reads and/or writes to a variable to cause a function to
+ *	be invoked, which can monitor the operations and/or change their
+ *	actions.
+ *
+ * Results:
+ *	A standard Tcl return value.
+ *
+ * Side effects:
+ *	A trace is set up on the variable given by varName, such that future
+ *	references to the variable will be intermediated by proc. See the
+ *	manual entry for complete details on the calling sequence for proc.
+ *     The variable's flags are updated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_TraceVar(
+    Tcl_Interp *interp,		/* Interpreter in which variable is to be
+				 * traced. */
+    const char *varName,	/* Name of variable; may end with "(index)" to
+				 * signify an array reference. */
+    int flags,			/* OR-ed collection of bits, including any of
+				 * TCL_TRACE_READS, TCL_TRACE_WRITES,
+				 * TCL_TRACE_UNSETS, TCL_GLOBAL_ONLY, and
+				 * TCL_NAMESPACE_ONLY. */
+    Tcl_VarTraceProc *proc,	/* Function to call when specified ops are
+				 * invoked upon varName. */
+    ClientData clientData)	/* Arbitrary argument to pass to proc. */
+{
+    return Tcl_TraceVar2(interp, varName, NULL, flags, proc, clientData);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_TraceVar2 --
+ *
+ *	Arrange for reads and/or writes to a variable to cause a function to
+ *	be invoked, which can monitor the operations and/or change their
+ *	actions.
+ *
+ * Results:
+ *	A standard Tcl return value.
+ *
+ * Side effects:
+ *	A trace is set up on the variable given by part1 and part2, such that
+ *	future references to the variable will be intermediated by proc. See
+ *	the manual entry for complete details on the calling sequence for
+ *	proc. The variable's flags are updated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_TraceVar2(
+    Tcl_Interp *interp,		/* Interpreter in which variable is to be
+				 * traced. */
+    const char *part1,		/* Name of scalar variable or array. */
+    const char *part2,		/* Name of element within array; NULL means
+				 * trace applies to scalar variable or array
+				 * as-a-whole. */
+    int flags,			/* OR-ed collection of bits, including any of
+				 * TCL_TRACE_READS, TCL_TRACE_WRITES,
+				 * TCL_TRACE_UNSETS, TCL_GLOBAL_ONLY, and
+				 * TCL_NAMESPACE_ONLY. */
+    Tcl_VarTraceProc *proc,	/* Function to call when specified ops are
+				 * invoked upon varName. */
+    ClientData clientData)	/* Arbitrary argument to pass to proc. */
+{
+    register VarTrace *tracePtr;
+    int result;
+
+    tracePtr = (VarTrace *) ckalloc(sizeof(VarTrace));
+    tracePtr->traceProc = proc;
+    tracePtr->clientData = clientData;
+    tracePtr->flags = flags;
+
+    result = TraceVarEx(interp, part1, part2, tracePtr);
+
+    if (result != TCL_OK) {
+	ckfree((char *) tracePtr);
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TraceVarEx --
+ *
+ *	Arrange for reads and/or writes to a variable to cause a function to
+ *	be invoked, which can monitor the operations and/or change their
+ *	actions.
+ *
+ * Results:
+ *	A standard Tcl return value.
+ *
+ * Side effects:
+ *	A trace is set up on the variable given by part1 and part2, such that
+ *	future references to the variable will be intermediated by the
+ *	traceProc listed in tracePtr. See the manual entry for complete
+ *	details on the calling sequence for proc.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TraceVarEx(
+    Tcl_Interp *interp,		/* Interpreter in which variable is to be
+				 * traced. */
+    const char *part1,		/* Name of scalar variable or array. */
+    const char *part2,		/* Name of element within array; NULL means
+				 * trace applies to scalar variable or array
+				 * as-a-whole. */
+    register VarTrace *tracePtr)/* Structure containing flags, traceProc and
+				 * clientData fields. Others should be left
+				 * blank. Will be ckfree()d (eventually) if
+				 * this function returns TCL_OK, and up to
+				 * caller to free if this function returns
+				 * TCL_ERROR. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Var *varPtr, *arrayPtr;
+    int flagMask, isNew;
+    Tcl_HashEntry *hPtr;
+
+    /*
+     * We strip 'flags' down to just the parts which are relevant to
+     * TclLookupVar, to avoid conflicts between trace flags and internal
+     * namespace flags such as 'TCL_FIND_ONLY_NS'. This can now occur since we
+     * have trace flags with values 0x1000 and higher.
+     */
+
+    flagMask = TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY;
+    varPtr = TclLookupVar(interp, part1, part2,
+	    (tracePtr->flags & flagMask) | TCL_LEAVE_ERR_MSG,
+	    "trace", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
+    if (varPtr == NULL) {
+	return TCL_ERROR;
+    }
+
+    /*
+     * Check for a nonsense flag combination. Note that this is a Tcl_Panic()
+     * because there should be no code path that ever sets both flags.
+     */
+
+    if ((tracePtr->flags&TCL_TRACE_RESULT_DYNAMIC)
+	    && (tracePtr->flags&TCL_TRACE_RESULT_OBJECT)) {
+	Tcl_Panic("bad result flag combination");
+    }
+
+    /*
+     * Set up trace information.
+     */
+
+    flagMask = TCL_TRACE_READS | TCL_TRACE_WRITES | TCL_TRACE_UNSETS |
+	  TCL_TRACE_ARRAY | TCL_TRACE_RESULT_DYNAMIC | TCL_TRACE_RESULT_OBJECT;
+#ifndef TCL_REMOVE_OBSOLETE_TRACES
+    flagMask |= TCL_TRACE_OLD_STYLE;
+#endif
+    tracePtr->flags = tracePtr->flags & flagMask;
+
+    hPtr = Tcl_CreateHashEntry(&iPtr->varTraces, (char *) varPtr, &isNew);
+    if (isNew) {
+	tracePtr->nextPtr = NULL;
+    } else {
+	tracePtr->nextPtr = (VarTrace *) Tcl_GetHashValue(hPtr);
+    }
+    Tcl_SetHashValue(hPtr, (char *) tracePtr);
+
+    /*
+     * Mark the variable as traced so we know to call them.
+     */
+
+    varPtr->flags |= (tracePtr->flags & VAR_ALL_TRACES);
+
+    return TCL_OK;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclUniData.c b/generic/tclUniData.c
index bbe1204..5c88639 100644
--- a/generic/tclUniData.c
+++ b/generic/tclUniData.c
@@ -23,7 +23,7 @@
  * to the same alternate page number.
  */
 
-static CONST unsigned short pageMap[] = {
+static const unsigned short pageMap[] = {
     0, 32, 64, 96, 0, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416,
     448, 224, 480, 512, 544, 576, 608, 640, 672, 704, 704, 736, 768, 800,
     832, 864, 896, 928, 960, 992, 224, 1024, 224, 1056, 224, 224, 1088,
@@ -546,7 +546,7 @@ static CONST unsigned short pageMap[] = {
  * set of character attributes.
  */
 
-static CONST unsigned char groupMap[] = {
+static const unsigned char groupMap[] = {
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
     1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 3, 3, 4, 3, 3, 3, 5, 6, 3, 7, 3, 8,
     3, 3, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 7, 7, 7, 3, 3, 10, 10, 10,
@@ -1354,7 +1354,7 @@ static CONST unsigned char groupMap[] = {
  *			    highest field so we can easily sign extend.
  */
 
-static CONST int groups[] = {
+static const int groups[] = {
     0, 15, 12, 25, 27, 21, 22, 26, 20, 9, 8257, 28, 19, 8322, 29,
     5, 23, 16, 11, -190078, 24, 2, -30846, 321, 386, -50879, 59522,
     -30911, 76930, -49790, 53825, 52801, 52545, 20289, 51777, 52033,
diff --git a/generic/tclUtf.c b/generic/tclUtf.c
index b6da7c3..83900e9 100644
--- a/generic/tclUtf.c
+++ b/generic/tclUtf.c
@@ -5,8 +5,8 @@
  *
  * Copyright (c) 1997-1998 Sun Microsystems, Inc.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
@@ -18,45 +18,45 @@
 #include "tclUniData.c"
 
 /*
- * The following macros are used for fast character category tests.  The
- * x_BITS values are shifted right by the category value to determine whether
- * the given category is included in the set.
+ * The following macros are used for fast character category tests. The x_BITS
+ * values are shifted right by the category value to determine whether the
+ * given category is included in the set.
  */
 
 #define ALPHA_BITS ((1 << UPPERCASE_LETTER) | (1 << LOWERCASE_LETTER) \
-    | (1 << TITLECASE_LETTER) | (1 << MODIFIER_LETTER) | (1 << OTHER_LETTER))
+	| (1 << TITLECASE_LETTER) | (1 << MODIFIER_LETTER) | (1<<OTHER_LETTER))
 
 #define CONTROL_BITS ((1 << CONTROL) | (1 << FORMAT) | (1 << PRIVATE_USE))
 
 #define DIGIT_BITS (1 << DECIMAL_DIGIT_NUMBER)
 
 #define SPACE_BITS ((1 << SPACE_SEPARATOR) | (1 << LINE_SEPARATOR) \
-    | (1 << PARAGRAPH_SEPARATOR))
+	| (1 << PARAGRAPH_SEPARATOR))
 
 #define WORD_BITS (ALPHA_BITS | DIGIT_BITS | (1 << CONNECTOR_PUNCTUATION))
 
 #define PUNCT_BITS ((1 << CONNECTOR_PUNCTUATION) | \
-	    (1 << DASH_PUNCTUATION) | (1 << OPEN_PUNCTUATION) | \
-	    (1 << CLOSE_PUNCTUATION) | (1 << INITIAL_QUOTE_PUNCTUATION) | \
-	    (1 << FINAL_QUOTE_PUNCTUATION) | (1 << OTHER_PUNCTUATION))
+	(1 << DASH_PUNCTUATION) | (1 << OPEN_PUNCTUATION) | \
+	(1 << CLOSE_PUNCTUATION) | (1 << INITIAL_QUOTE_PUNCTUATION) | \
+	(1 << FINAL_QUOTE_PUNCTUATION) | (1 << OTHER_PUNCTUATION))
 
 #define GRAPH_BITS (WORD_BITS | PUNCT_BITS | \
-	    (1 << NON_SPACING_MARK) | (1 << ENCLOSING_MARK) | \
-	    (1 << COMBINING_SPACING_MARK) | (1 << LETTER_NUMBER) | \
-	    (1 << OTHER_NUMBER) | \
-	    (1 << MATH_SYMBOL) | (1 << CURRENCY_SYMBOL) | \
-	    (1 << MODIFIER_SYMBOL) | (1 << OTHER_SYMBOL))
+	(1 << NON_SPACING_MARK) | (1 << ENCLOSING_MARK) | \
+	(1 << COMBINING_SPACING_MARK) | (1 << LETTER_NUMBER) | \
+	(1 << OTHER_NUMBER) | \
+	(1 << MATH_SYMBOL) | (1 << CURRENCY_SYMBOL) | \
+	(1 << MODIFIER_SYMBOL) | (1 << OTHER_SYMBOL))
 
 /*
- * Unicode characters less than this value are represented by themselves
- * in UTF-8 strings.
+ * Unicode characters less than this value are represented by themselves in
+ * UTF-8 strings.
  */
 
 #define UNICODE_SELF	0x80
 
 /*
- * The following structures are used when mapping between Unicode (UCS-2)
- * and UTF-8.
+ * The following structures are used when mapping between Unicode (UCS-2) and
+ * UTF-8.
  */
 
 static CONST unsigned char totalBytes[256] = {
@@ -86,11 +86,10 @@ static CONST unsigned char totalBytes[256] = {
 };
 
 /*
- * Procedures used only in this module.
+ * Functions used only in this module.
  */
 
-static int UtfCount _ANSI_ARGS_((int ch));
-
+static int		UtfCount(int ch);
 
 /*
  *---------------------------------------------------------------------------
@@ -109,8 +108,8 @@ static int UtfCount _ANSI_ARGS_((int ch));
  */
 
 INLINE static int
-UtfCount(ch)
-    int ch;			/* The Tcl_UniChar whose size is returned. */
+UtfCount(
+    int ch)			/* The Tcl_UniChar whose size is returned. */
 {
     if ((ch > 0) && (ch < UNICODE_SELF)) {
 	return 1;
@@ -141,11 +140,11 @@ UtfCount(ch)
  * Tcl_UniCharToUtf --
  *
  *	Store the given Tcl_UniChar as a sequence of UTF-8 bytes in the
- *	provided buffer.  Equivalent to Plan 9 runetochar().
+ *	provided buffer. Equivalent to Plan 9 runetochar().
  *
  * Results:
- *	The return values is the number of bytes in the buffer that
- *	were consumed.
+ *	The return values is the number of bytes in the buffer that were
+ *	consumed.
  *
  * Side effects:
  *	None.
@@ -154,55 +153,55 @@ UtfCount(ch)
  */
 
 INLINE int
-Tcl_UniCharToUtf(ch, str)
-    int ch;			/* The Tcl_UniChar to be stored in the
+Tcl_UniCharToUtf(
+    int ch,			/* The Tcl_UniChar to be stored in the
 				 * buffer. */
-    char *str;			/* Buffer in which the UTF-8 representation
-				 * of the Tcl_UniChar is stored.  Buffer must
-				 * be large enough to hold the UTF-8 character
+    char *buf)			/* Buffer in which the UTF-8 representation of
+				 * the Tcl_UniChar is stored. Buffer must be
+				 * large enough to hold the UTF-8 character
 				 * (at most TCL_UTF_MAX bytes). */
 {
     if ((ch > 0) && (ch < UNICODE_SELF)) {
-	str[0] = (char) ch;
+	buf[0] = (char) ch;
 	return 1;
     }
     if (ch >= 0) {
 	if (ch <= 0x7FF) {
-	    str[1] = (char) ((ch | 0x80) & 0xBF);
-	    str[0] = (char) ((ch >> 6) | 0xC0);
+	    buf[1] = (char) ((ch | 0x80) & 0xBF);
+	    buf[0] = (char) ((ch >> 6) | 0xC0);
 	    return 2;
 	}
 	if (ch <= 0xFFFF) {
 	three:
-	    str[2] = (char) ((ch | 0x80) & 0xBF);
-	    str[1] = (char) (((ch >> 6) | 0x80) & 0xBF);
-	    str[0] = (char) ((ch >> 12) | 0xE0);
+	    buf[2] = (char) ((ch | 0x80) & 0xBF);
+	    buf[1] = (char) (((ch >> 6) | 0x80) & 0xBF);
+	    buf[0] = (char) ((ch >> 12) | 0xE0);
 	    return 3;
 	}
 
 #if TCL_UTF_MAX > 3
 	if (ch <= 0x1FFFFF) {
-	    str[3] = (char) ((ch | 0x80) & 0xBF);
-	    str[2] = (char) (((ch >> 6) | 0x80) & 0xBF);
-	    str[1] = (char) (((ch >> 12) | 0x80) & 0xBF);
-	    str[0] = (char) ((ch >> 18) | 0xF0);
+	    buf[3] = (char) ((ch | 0x80) & 0xBF);
+	    buf[2] = (char) (((ch >> 6) | 0x80) & 0xBF);
+	    buf[1] = (char) (((ch >> 12) | 0x80) & 0xBF);
+	    buf[0] = (char) ((ch >> 18) | 0xF0);
 	    return 4;
 	}
 	if (ch <= 0x3FFFFFF) {
-	    str[4] = (char) ((ch | 0x80) & 0xBF);
-	    str[3] = (char) (((ch >> 6) | 0x80) & 0xBF);
-	    str[2] = (char) (((ch >> 12) | 0x80) & 0xBF);
-	    str[1] = (char) (((ch >> 18) | 0x80) & 0xBF);
-	    str[0] = (char) ((ch >> 24) | 0xF8);
+	    buf[4] = (char) ((ch | 0x80) & 0xBF);
+	    buf[3] = (char) (((ch >> 6) | 0x80) & 0xBF);
+	    buf[2] = (char) (((ch >> 12) | 0x80) & 0xBF);
+	    buf[1] = (char) (((ch >> 18) | 0x80) & 0xBF);
+	    buf[0] = (char) ((ch >> 24) | 0xF8);
 	    return 5;
 	}
 	if (ch <= 0x7FFFFFFF) {
-	    str[5] = (char) ((ch | 0x80) & 0xBF);
-	    str[4] = (char) (((ch >> 6) | 0x80) & 0xBF);
-	    str[3] = (char) (((ch >> 12) | 0x80) & 0xBF);
-	    str[2] = (char) (((ch >> 18) | 0x80) & 0xBF);
-	    str[1] = (char) (((ch >> 24) | 0x80) & 0xBF);
-	    str[0] = (char) ((ch >> 30) | 0xFC);
+	    buf[5] = (char) ((ch | 0x80) & 0xBF);
+	    buf[4] = (char) (((ch >> 6) | 0x80) & 0xBF);
+	    buf[3] = (char) (((ch >> 12) | 0x80) & 0xBF);
+	    buf[2] = (char) (((ch >> 18) | 0x80) & 0xBF);
+	    buf[1] = (char) (((ch >> 24) | 0x80) & 0xBF);
+	    buf[0] = (char) ((ch >> 30) | 0xFC);
 	    return 6;
 	}
 #endif
@@ -221,8 +220,8 @@ Tcl_UniCharToUtf(ch, str)
  *
  * Results:
  *	The return value is a pointer to the UTF-8 representation of the
- *	Unicode string.  Storage for the return value is appended to the
- *	end of dsPtr.
+ *	Unicode string. Storage for the return value is appended to the end of
+ *	dsPtr.
  *
  * Side effects:
  *	None.
@@ -231,13 +230,12 @@ Tcl_UniCharToUtf(ch, str)
  */
 
 char *
-Tcl_UniCharToUtfDString(wString, numChars, dsPtr)
-    CONST Tcl_UniChar *wString;	/* Unicode string to convert to UTF-8. */
-    int numChars;		/* Length of Unicode string in Tcl_UniChars
+Tcl_UniCharToUtfDString(
+    CONST Tcl_UniChar *uniStr,	/* Unicode string to convert to UTF-8. */
+    int uniLength,		/* Length of Unicode string in Tcl_UniChars
 				 * (must be >= 0). */
-    Tcl_DString *dsPtr;		/* UTF-8 representation of string is
-				 * appended to this previously initialized
-				 * DString. */
+    Tcl_DString *dsPtr)		/* UTF-8 representation of string is appended
+				 * to this previously initialized DString. */
 {
     CONST Tcl_UniChar *w, *wEnd;
     char *p, *string;
@@ -249,12 +247,12 @@ Tcl_UniCharToUtfDString(wString, numChars, dsPtr)
      */
 
     oldLength = Tcl_DStringLength(dsPtr);
-    Tcl_DStringSetLength(dsPtr, (oldLength + numChars + 1) * TCL_UTF_MAX);
+    Tcl_DStringSetLength(dsPtr, (oldLength + uniLength + 1) * TCL_UTF_MAX);
     string = Tcl_DStringValue(dsPtr) + oldLength;
 
     p = string;
-    wEnd = wString + numChars;
-    for (w = wString; w < wEnd; ) {
+    wEnd = uniStr + uniLength;
+    for (w = uniStr; w < wEnd; ) {
 	p += Tcl_UniCharToUtf(*w, p);
 	w++;
     }
@@ -268,16 +266,16 @@ Tcl_UniCharToUtfDString(wString, numChars, dsPtr)
  *
  * Tcl_UtfToUniChar --
  *
- *	Extract the Tcl_UniChar represented by the UTF-8 string.  Bad
- *	UTF-8 sequences are converted to valid Tcl_UniChars and processing
- *	continues.  Equivalent to Plan 9 chartorune().
+ *	Extract the Tcl_UniChar represented by the UTF-8 string. Bad UTF-8
+ *	sequences are converted to valid Tcl_UniChars and processing
+ *	continues. Equivalent to Plan 9 chartorune().
  *
- *	The caller must ensure that the source buffer is long enough that
- *	this routine does not run off the end and dereference non-existent
- *	memory looking for trail bytes.  If the source buffer is known to
- *	be '\0' terminated, this cannot happen.  Otherwise, the caller
- *	should call Tcl_UtfCharComplete() before calling this routine to
- *	ensure that enough bytes remain in the string.
+ *	The caller must ensure that the source buffer is long enough that this
+ *	routine does not run off the end and dereference non-existent memory
+ *	looking for trail bytes. If the source buffer is known to be '\0'
+ *	terminated, this cannot happen. Otherwise, the caller should call
+ *	Tcl_UtfCharComplete() before calling this routine to ensure that
+ *	enough bytes remain in the string.
  *
  * Results:
  *	*chPtr is filled with the Tcl_UniChar, and the return value is the
@@ -290,10 +288,10 @@ Tcl_UniCharToUtfDString(wString, numChars, dsPtr)
  */
 
 int
-Tcl_UtfToUniChar(str, chPtr)
-    register CONST char *str;	 /* The UTF-8 string. */
-    register Tcl_UniChar *chPtr; /* Filled with the Tcl_UniChar represented
-				  * by the UTF-8 string. */
+Tcl_UtfToUniChar(
+    register CONST char *src,	/* The UTF-8 string. */
+    register Tcl_UniChar *chPtr)/* Filled with the Tcl_UniChar represented by
+				 * the UTF-8 string. */
 {
     register int byte;
 
@@ -301,7 +299,7 @@ Tcl_UtfToUniChar(str, chPtr)
      * Unroll 1 to 3 byte UTF-8 sequences, use loop to handle longer ones.
      */
 
-    byte = *((unsigned char *) str);
+    byte = *((unsigned char *) src);
     if (byte < 0xC0) {
 	/*
 	 * Handles properly formed UTF-8 characters between 0x01 and 0x7F.
@@ -312,14 +310,15 @@ Tcl_UtfToUniChar(str, chPtr)
 	*chPtr = (Tcl_UniChar) byte;
 	return 1;
     } else if (byte < 0xE0) {
-	if ((str[1] & 0xC0) == 0x80) {
+	if ((src[1] & 0xC0) == 0x80) {
 	    /*
 	     * Two-byte-character lead-byte followed by a trail-byte.
 	     */
 
-	    *chPtr = (Tcl_UniChar) (((byte & 0x1F) << 6) | (str[1] & 0x3F));
+	    *chPtr = (Tcl_UniChar) (((byte & 0x1F) << 6) | (src[1] & 0x3F));
 	    return 2;
 	}
+
 	/*
 	 * A two-byte-character lead-byte not followed by trail-byte
 	 * represents itself.
@@ -328,15 +327,16 @@ Tcl_UtfToUniChar(str, chPtr)
 	*chPtr = (Tcl_UniChar) byte;
 	return 1;
     } else if (byte < 0xF0) {
-	if (((str[1] & 0xC0) == 0x80) && ((str[2] & 0xC0) == 0x80)) {
+	if (((src[1] & 0xC0) == 0x80) && ((src[2] & 0xC0) == 0x80)) {
 	    /*
 	     * Three-byte-character lead byte followed by two trail bytes.
 	     */
 
 	    *chPtr = (Tcl_UniChar) (((byte & 0x0F) << 12)
-		    | ((str[1] & 0x3F) << 6) | (str[2] & 0x3F));
+		    | ((src[1] & 0x3F) << 6) | (src[2] & 0x3F));
 	    return 3;
 	}
+
 	/*
 	 * A three-byte-character lead-byte not followed by two trail-bytes
 	 * represents itself.
@@ -346,7 +346,7 @@ Tcl_UtfToUniChar(str, chPtr)
 	return 1;
     }
 #if TCL_UTF_MAX > 3
-    else {
+    {
 	int ch, total, trail;
 
 	total = totalBytes[byte];
@@ -354,13 +354,13 @@ Tcl_UtfToUniChar(str, chPtr)
 	if (trail > 0) {
 	    ch = byte & (0x3F >> trail);
 	    do {
-		str++;
-		if ((*str & 0xC0) != 0x80) {
+		src++;
+		if ((*src & 0xC0) != 0x80) {
 		    *chPtr = byte;
 		    return 1;
 		}
 		ch <<= 6;
-		ch |= (*str & 0x3F);
+		ch |= (*src & 0x3F);
 		trail--;
 	    } while (trail > 0);
 	    *chPtr = ch;
@@ -382,9 +382,8 @@ Tcl_UtfToUniChar(str, chPtr)
  *
  * Results:
  *	The return value is a pointer to the Unicode representation of the
- *	UTF-8 string.  Storage for the return value is appended to the
- *	end of dsPtr.  The Unicode string is terminated with a Unicode
- *	NULL character.
+ *	UTF-8 string. Storage for the return value is appended to the end of
+ *	dsPtr. The Unicode string is terminated with a Unicode NULL character.
  *
  * Side effects:
  *	None.
@@ -393,11 +392,11 @@ Tcl_UtfToUniChar(str, chPtr)
  */
 
 Tcl_UniChar *
-Tcl_UtfToUniCharDString(string, length, dsPtr)
-    CONST char *string;		/* UTF-8 string to convert to Unicode. */
-    int length;			/* Length of UTF-8 string in bytes, or -1
-				 * for strlen(). */
-    Tcl_DString *dsPtr;		/* Unicode representation of string is
+Tcl_UtfToUniCharDString(
+    CONST char *src,		/* UTF-8 string to convert to Unicode. */
+    int length,			/* Length of UTF-8 string in bytes, or -1 for
+				 * strlen(). */
+    Tcl_DString *dsPtr)		/* Unicode representation of string is
 				 * appended to this previously initialized
 				 * DString. */
 {
@@ -406,12 +405,12 @@ Tcl_UtfToUniCharDString(string, length, dsPtr)
     int oldLength;
 
     if (length < 0) {
-	length = strlen(string);
+	length = strlen(src);
     }
 
     /*
-     * Unicode string length in Tcl_UniChars will be <= UTF-8 string length
-     * in bytes.
+     * Unicode string length in Tcl_UniChars will be <= UTF-8 string length in
+     * bytes.
      */
 
     oldLength = Tcl_DStringLength(dsPtr);
@@ -420,8 +419,8 @@ Tcl_UtfToUniCharDString(string, length, dsPtr)
     wString = (Tcl_UniChar *) (Tcl_DStringValue(dsPtr) + oldLength);
 
     w = wString;
-    end = string + length;
-    for (p = string; p < end; ) {
+    end = src + length;
+    for (p = src; p < end; ) {
 	p += TclUtfToUniChar(p, w);
 	w++;
     }
@@ -437,9 +436,9 @@ Tcl_UtfToUniCharDString(string, length, dsPtr)
  *
  * Tcl_UtfCharComplete --
  *
- *	Determine if the UTF-8 string of the given length is long enough
- *	to be decoded by Tcl_UtfToUniChar().  This does not ensure that the
- *	UTF-8 string is properly formed.  Equivalent to Plan 9 fullrune().
+ *	Determine if the UTF-8 string of the given length is long enough to be
+ *	decoded by Tcl_UtfToUniChar(). This does not ensure that the UTF-8
+ *	string is properly formed. Equivalent to Plan 9 fullrune().
  *
  * Results:
  *	The return value is 0 if the string is not long enough, non-zero
@@ -452,15 +451,15 @@ Tcl_UtfToUniCharDString(string, length, dsPtr)
  */
 
 int
-Tcl_UtfCharComplete(str, len)
-    CONST char *str;		/* String to check if first few bytes
-				 * contain a complete UTF-8 character. */
-    int len;			/* Length of above string in bytes. */
+Tcl_UtfCharComplete(
+    CONST char *src,		/* String to check if first few bytes contain
+				 * a complete UTF-8 character. */
+    int length)			/* Length of above string in bytes. */
 {
     int ch;
 
-    ch = *((unsigned char *) str);
-    return len >= totalBytes[ch];
+    ch = *((unsigned char *) src);
+    return length >= totalBytes[ch];
 }
 
 /*
@@ -468,9 +467,9 @@ Tcl_UtfCharComplete(str, len)
  *
  * Tcl_NumUtfChars --
  *
- *	Returns the number of characters (not bytes) in the UTF-8 string,
- *	not including the terminating NULL byte.  This is equivalent to
- *	Plan 9 utflen() and utfnlen().
+ *	Returns the number of characters (not bytes) in the UTF-8 string, not
+ *	including the terminating NULL byte. This is equivalent to Plan 9
+ *	utflen() and utfnlen().
  *
  * Results:
  *	As above.
@@ -482,9 +481,9 @@ Tcl_UtfCharComplete(str, len)
  */
 
 int
-Tcl_NumUtfChars(str, len)
-    register CONST char *str;	/* The UTF-8 string to measure. */
-    int len;			/* The length of the string in bytes, or -1
+Tcl_NumUtfChars(
+    register CONST char *src,	/* The UTF-8 string to measure. */
+    int length)			/* The length of the string in bytes, or -1
 				 * for strlen(string). */
 {
     Tcl_UniChar ch;
@@ -494,27 +493,27 @@ Tcl_NumUtfChars(str, len)
     /*
      * The separate implementations are faster.
      *
-     * Since this is a time-sensitive function, we also do the check for
-     * the single-byte char case specially.
+     * Since this is a time-sensitive function, we also do the check for the
+     * single-byte char case specially.
      */
 
     i = 0;
-    if (len < 0) {
-	while (*str != '\0') {
-	    str += TclUtfToUniChar(str, chPtr);
+    if (length < 0) {
+	while (*src != '\0') {
+	    src += TclUtfToUniChar(src, chPtr);
 	    i++;
 	}
     } else {
 	register int n;
 
-	while (len > 0) {
-	    if (UCHAR(*str) < 0xC0) {
-		len--;
-		str++;
+	while (length > 0) {
+	    if (UCHAR(*src) < 0xC0) {
+		length--;
+		src++;
 	    } else {
-		n = Tcl_UtfToUniChar(str, chPtr);
-		len -= n;
-		str += n;
+		n = Tcl_UtfToUniChar(src, chPtr);
+		length -= n;
+		src += n;
 	    }
 	    i++;
 	}
@@ -527,37 +526,37 @@ Tcl_NumUtfChars(str, len)
  *
  * Tcl_UtfFindFirst --
  *
- *	Returns a pointer to the first occurance of the given Tcl_UniChar
- *	in the NULL-terminated UTF-8 string.  The NULL terminator is
- *	considered part of the UTF-8 string.  Equivalent to Plan 9
- *	utfrune().
+ *	Returns a pointer to the first occurance of the given Tcl_UniChar in
+ *	the NULL-terminated UTF-8 string. The NULL terminator is considered
+ *	part of the UTF-8 string. Equivalent to Plan 9 utfrune().
  *
  * Results:
- *	As above.  If the Tcl_UniChar does not exist in the given string,
- *	the return value is NULL.
+ *	As above. If the Tcl_UniChar does not exist in the given string, the
+ *	return value is NULL.
  *
  * Side effects:
  *	None.
  *
  *---------------------------------------------------------------------------
  */
+
 CONST char *
-Tcl_UtfFindFirst(string, ch)
-    CONST char *string;		/* The UTF-8 string to be searched. */
-    int ch;			/* The Tcl_UniChar to search for. */
+Tcl_UtfFindFirst(
+    CONST char *src,		/* The UTF-8 string to be searched. */
+    int ch)			/* The Tcl_UniChar to search for. */
 {
     int len;
     Tcl_UniChar find;
 
     while (1) {
-	len = TclUtfToUniChar(string, &find);
+	len = TclUtfToUniChar(src, &find);
 	if (find == ch) {
-	    return string;
+	    return src;
 	}
-	if (*string == '\0') {
+	if (*src == '\0') {
 	    return NULL;
 	}
-	string += len;
+	src += len;
     }
 }
 
@@ -566,14 +565,13 @@ Tcl_UtfFindFirst(string, ch)
  *
  * Tcl_UtfFindLast --
  *
- *	Returns a pointer to the last occurance of the given Tcl_UniChar
- *	in the NULL-terminated UTF-8 string.  The NULL terminator is
- *	considered part of the UTF-8 string.  Equivalent to Plan 9
- *	utfrrune().
+ *	Returns a pointer to the last occurance of the given Tcl_UniChar in
+ *	the NULL-terminated UTF-8 string. The NULL terminator is considered
+ *	part of the UTF-8 string. Equivalent to Plan 9 utfrrune().
  *
  * Results:
- *	As above.  If the Tcl_UniChar does not exist in the given string,
- *	the return value is NULL.
+ *	As above. If the Tcl_UniChar does not exist in the given string, the
+ *	return value is NULL.
  *
  * Side effects:
  *	None.
@@ -582,9 +580,9 @@ Tcl_UtfFindFirst(string, ch)
  */
 
 CONST char *
-Tcl_UtfFindLast(string, ch)
-    CONST char *string;		/* The UTF-8 string to be searched. */
-    int ch;			/* The Tcl_UniChar to search for. */
+Tcl_UtfFindLast(
+    CONST char *src,		/* The UTF-8 string to be searched. */
+    int ch)			/* The Tcl_UniChar to search for. */
 {
     int len;
     Tcl_UniChar find;
@@ -592,14 +590,14 @@ Tcl_UtfFindLast(string, ch)
 
     last = NULL;
     while (1) {
-	len = TclUtfToUniChar(string, &find);
+	len = TclUtfToUniChar(src, &find);
 	if (find == ch) {
-	    last = string;
+	    last = src;
 	}
-	if (*string == '\0') {
+	if (*src == '\0') {
 	    break;
 	}
-	string += len;
+	src += len;
     }
     return last;
 }
@@ -609,14 +607,13 @@ Tcl_UtfFindLast(string, ch)
  *
  * Tcl_UtfNext --
  *
- *	Given a pointer to some current location in a UTF-8 string,
- *	move forward one character.  The caller must ensure that they
- *	are not asking for the next character after the last character
- *	in the string.
+ *	Given a pointer to some current location in a UTF-8 string, move
+ *	forward one character. The caller must ensure that they are not asking
+ *	for the next character after the last character in the string.
  *
  * Results:
- *	The return value is the pointer to the next character in
- *	the UTF-8 string.
+ *	The return value is the pointer to the next character in the UTF-8
+ *	string.
  *
  * Side effects:
  *	None.
@@ -625,12 +622,12 @@ Tcl_UtfFindLast(string, ch)
  */
 
 CONST char *
-Tcl_UtfNext(str)
-    CONST char *str;		    /* The current location in the string. */
+Tcl_UtfNext(
+    CONST char *src)		/* The current location in the string. */
 {
     Tcl_UniChar ch;
 
-    return str + TclUtfToUniChar(str, &ch);
+    return src + TclUtfToUniChar(src, &ch);
 }
 
 /*
@@ -638,15 +635,15 @@ Tcl_UtfNext(str)
  *
  * Tcl_UtfPrev --
  *
- *	Given a pointer to some current location in a UTF-8 string,
- *	move backwards one character.  This works correctly when the
- *	pointer is in the middle of a UTF-8 character.
+ *	Given a pointer to some current location in a UTF-8 string, move
+ *	backwards one character. This works correctly when the pointer is in
+ *	the middle of a UTF-8 character.
  *
  * Results:
- *	The return value is a pointer to the previous character in the
- *	UTF-8 string.  If the current location was already at the
- *	beginning of the string, the return value will also be a
- *	pointer to the beginning of the string.
+ *	The return value is a pointer to the previous character in the UTF-8
+ *	string. If the current location was already at the beginning of the
+ *	string, the return value will also be a pointer to the beginning of
+ *	the string.
  *
  * Side effects:
  *	None.
@@ -655,21 +652,20 @@ Tcl_UtfNext(str)
  */
 
 CONST char *
-Tcl_UtfPrev(str, start)
-    CONST char *str;		    /* The current location in the string. */
-    CONST char *start;		    /* Pointer to the beginning of the
-				     * string, to avoid going backwards too
-				     * far. */
+Tcl_UtfPrev(
+    CONST char *src,		/* The current location in the string. */
+    CONST char *start)		/* Pointer to the beginning of the string, to
+				 * avoid going backwards too far. */
 {
     CONST char *look;
     int i, byte;
 
-    str--;
-    look = str;
+    src--;
+    look = src;
     for (i = 0; i < TCL_UTF_MAX; i++) {
 	if (look < start) {
-	    if (str < start) {
-		str = start;
+	    if (src < start) {
+		src = start;
 	    }
 	    break;
 	}
@@ -682,7 +678,7 @@ Tcl_UtfPrev(str, start)
 	}
 	look--;
     }
-    return str;
+    return src;
 }
 
 /*
@@ -690,8 +686,8 @@ Tcl_UtfPrev(str, start)
  *
  * Tcl_UniCharAtIndex --
  *
- *	Returns the Unicode character represented at the specified
- *	character (not byte) position in the UTF-8 string.
+ *	Returns the Unicode character represented at the specified character
+ *	(not byte) position in the UTF-8 string.
  *
  * Results:
  *	As above.
@@ -703,9 +699,9 @@ Tcl_UtfPrev(str, start)
  */
 
 Tcl_UniChar
-Tcl_UniCharAtIndex(src, index)
-    register CONST char *src;	/* The UTF-8 string to dereference. */
-    register int index;		/* The position of the desired character. */
+Tcl_UniCharAtIndex(
+    register CONST char *src,	/* The UTF-8 string to dereference. */
+    register int index)		/* The position of the desired character. */
 {
     Tcl_UniChar ch;
 
@@ -721,8 +717,8 @@ Tcl_UniCharAtIndex(src, index)
  *
  * Tcl_UtfAtIndex --
  *
- *	Returns a pointer to the specified character (not byte) position
- *	in the UTF-8 string.
+ *	Returns a pointer to the specified character (not byte) position in
+ *	the UTF-8 string.
  *
  * Results:
  *	As above.
@@ -734,9 +730,9 @@ Tcl_UniCharAtIndex(src, index)
  */
 
 CONST char *
-Tcl_UtfAtIndex(src, index)
-    register CONST char *src;	/* The UTF-8 string. */
-    register int index;		/* The position of the desired character. */
+Tcl_UtfAtIndex(
+    register CONST char *src,	/* The UTF-8 string. */
+    register int index)		/* The position of the desired character. */
 {
     Tcl_UniChar ch;
 
@@ -756,31 +752,30 @@ Tcl_UtfAtIndex(src, index)
  *
  * Results:
  *	Stores the bytes represented by the backslash sequence in dst and
- *	returns the number of bytes written to dst.  At most TCL_UTF_MAX
- *	bytes are written to dst; dst must have been large enough to accept
- *	those bytes.  If readPtr isn't NULL then it is filled in with a
- *	count of the number of bytes in the backslash sequence.
+ *	returns the number of bytes written to dst. At most TCL_UTF_MAX bytes
+ *	are written to dst; dst must have been large enough to accept those
+ *	bytes. If readPtr isn't NULL then it is filled in with a count of the
+ *	number of bytes in the backslash sequence.
  *
  * Side effects:
- *	The maximum number of bytes it takes to represent a Unicode
- *	character in UTF-8 is guaranteed to be less than the number of
- *	bytes used to express the backslash sequence that represents
- *	that Unicode character.  If the target buffer into which the
- *	caller is going to store the bytes that represent the Unicode
- *	character is at least as large as the source buffer from which
- *	the backslashed sequence was extracted, no buffer overruns should
- *	occur.
+ *	The maximum number of bytes it takes to represent a Unicode character
+ *	in UTF-8 is guaranteed to be less than the number of bytes used to
+ *	express the backslash sequence that represents that Unicode character.
+ *	If the target buffer into which the caller is going to store the bytes
+ *	that represent the Unicode character is at least as large as the
+ *	source buffer from which the backslashed sequence was extracted, no
+ *	buffer overruns should occur.
  *
  *---------------------------------------------------------------------------
  */
 
 int
-Tcl_UtfBackslash(src, readPtr, dst)
-    CONST char *src;		/* Points to the backslash character of
-				 * a backslash sequence. */
-    int *readPtr;		/* Fill in with number of characters read
-				 * from src, unless NULL. */
-    char *dst;			/* Filled with the bytes represented by the
+Tcl_UtfBackslash(
+    CONST char *src,		/* Points to the backslash character of a
+				 * backslash sequence. */
+    int *readPtr,		/* Fill in with number of characters read from
+				 * src, unless NULL. */
+    char *dst)			/* Filled with the bytes represented by the
 				 * backslash sequence. */
 {
 #define LINE_LENGTH 128
@@ -789,7 +784,10 @@ Tcl_UtfBackslash(src, readPtr, dst)
 
     result = TclParseBackslash(src, LINE_LENGTH, &numRead, dst);
     if (numRead == LINE_LENGTH) {
-	/* We ate a whole line.  Pay the price of a strlen() */
+	/*
+	 * We ate a whole line. Pay the price of a strlen()
+	 */
+
 	result = TclParseBackslash(src, (int)strlen(src), &numRead, dst);
     }
     if (readPtr != NULL) {
@@ -803,12 +801,12 @@ Tcl_UtfBackslash(src, readPtr, dst)
  *
  * Tcl_UtfToUpper --
  *
- *	Convert lowercase characters to uppercase characters in a UTF
- *	string in place.  The conversion may shrink the UTF string.
+ *	Convert lowercase characters to uppercase characters in a UTF string
+ *	in place. The conversion may shrink the UTF string.
  *
  * Results:
- *	Returns the number of bytes in the resulting string
- *	excluding the trailing null.
+ *	Returns the number of bytes in the resulting string excluding the
+ *	trailing null.
  *
  * Side effects:
  *	Writes a terminating null after the last converted character.
@@ -817,8 +815,8 @@ Tcl_UtfBackslash(src, readPtr, dst)
  */
 
 int
-Tcl_UtfToUpper(str)
-    char *str;			/* String to convert in place. */
+Tcl_UtfToUpper(
+    char *str)			/* String to convert in place. */
 {
     Tcl_UniChar ch, upChar;
     char *src, *dst;
@@ -830,13 +828,13 @@ Tcl_UtfToUpper(str)
 
     src = dst = str;
     while (*src) {
-        bytes = TclUtfToUniChar(src, &ch);
+	bytes = TclUtfToUniChar(src, &ch);
 	upChar = Tcl_UniCharToUpper(ch);
 
 	/*
-	 * To keep badly formed Utf strings from getting inflated by
-	 * the conversion (thereby causing a segfault), only copy the
-	 * upper case char to dst if its size is <= the original char.
+	 * To keep badly formed Utf strings from getting inflated by the
+	 * conversion (thereby causing a segfault), only copy the upper case
+	 * char to dst if its size is <= the original char.
 	 */
 
 	if (bytes < UtfCount(upChar)) {
@@ -856,12 +854,12 @@ Tcl_UtfToUpper(str)
  *
  * Tcl_UtfToLower --
  *
- *	Convert uppercase characters to lowercase characters in a UTF
- *	string in place.  The conversion may shrink the UTF string.
+ *	Convert uppercase characters to lowercase characters in a UTF string
+ *	in place. The conversion may shrink the UTF string.
  *
  * Results:
- *	Returns the number of bytes in the resulting string
- *	excluding the trailing null.
+ *	Returns the number of bytes in the resulting string excluding the
+ *	trailing null.
  *
  * Side effects:
  *	Writes a terminating null after the last converted character.
@@ -870,8 +868,8 @@ Tcl_UtfToUpper(str)
  */
 
 int
-Tcl_UtfToLower(str)
-    char *str;			/* String to convert in place. */
+Tcl_UtfToLower(
+    char *str)			/* String to convert in place. */
 {
     Tcl_UniChar ch, lowChar;
     char *src, *dst;
@@ -887,9 +885,9 @@ Tcl_UtfToLower(str)
 	lowChar = Tcl_UniCharToLower(ch);
 
 	/*
-	 * To keep badly formed Utf strings from getting inflated by
-	 * the conversion (thereby causing a segfault), only copy the
-	 * lower case char to dst if its size is <= the original char.
+	 * To keep badly formed Utf strings from getting inflated by the
+	 * conversion (thereby causing a segfault), only copy the lower case
+	 * char to dst if its size is <= the original char.
 	 */
 
 	if (bytes < UtfCount(lowChar)) {
@@ -909,13 +907,13 @@ Tcl_UtfToLower(str)
  *
  * Tcl_UtfToTitle --
  *
- *	Changes the first character of a UTF string to title case or
- *	uppercase and the rest of the string to lowercase.  The
- *	conversion happens in place and may shrink the UTF string.
+ *	Changes the first character of a UTF string to title case or uppercase
+ *	and the rest of the string to lowercase. The conversion happens in
+ *	place and may shrink the UTF string.
  *
  * Results:
- *	Returns the number of bytes in the resulting string
- *	excluding the trailing null.
+ *	Returns the number of bytes in the resulting string excluding the
+ *	trailing null.
  *
  * Side effects:
  *	Writes a terminating null after the last converted character.
@@ -924,8 +922,8 @@ Tcl_UtfToLower(str)
  */
 
 int
-Tcl_UtfToTitle(str)
-    char *str;			/* String to convert in place. */
+Tcl_UtfToTitle(
+    char *str)			/* String to convert in place. */
 {
     Tcl_UniChar ch, titleChar, lowChar;
     char *src, *dst;
@@ -971,8 +969,8 @@ Tcl_UtfToTitle(str)
  *
  * TclpUtfNcmp2 --
  *
- *	Compare at most n bytes of utf-8 strings cs and ct.  Both cs
- *	and ct are assumed to be at least n bytes long.
+ *	Compare at most numBytes bytes of utf-8 strings cs and ct. Both cs and
+ *	ct are assumed to be at least numBytes bytes long.
  *
  * Results:
  *	Return <0 if cs < ct, 0 if cs == ct, or >0 if cs > ct.
@@ -984,26 +982,28 @@ Tcl_UtfToTitle(str)
  */
 
 int
-TclpUtfNcmp2(cs, ct, n)
-    CONST char *cs;		/* UTF string to compare to ct. */
-    CONST char *ct;		/* UTF string cs is compared to. */
-    unsigned long n;		/* Number of *bytes* to compare. */
+TclpUtfNcmp2(
+    CONST char *cs,		/* UTF string to compare to ct. */
+    CONST char *ct,		/* UTF string cs is compared to. */
+    unsigned long numBytes)	/* Number of *bytes* to compare. */
 {
     /*
-     * We can't simply call 'memcmp(cs, ct, n);' because we need to check
-     * for Tcl's \xC0\x80 non-utf-8 null encoding.
-     * Otherwise utf-8 lexes fine in the strcmp manner.
+     * We can't simply call 'memcmp(cs, ct, numBytes);' because we need to
+     * check for Tcl's \xC0\x80 non-utf-8 null encoding. Otherwise utf-8 lexes
+     * fine in the strcmp manner.
      */
+
     register int result = 0;
 
-    for ( ; n != 0; n--, cs++, ct++) {
+    for ( ; numBytes != 0; numBytes--, cs++, ct++) {
 	if (*cs != *ct) {
 	    result = UCHAR(*cs) - UCHAR(*ct);
 	    break;
 	}
     }
-    if (n && ((UCHAR(*cs) == 0xC0) || (UCHAR(*ct) == 0xC0))) {
+    if (numBytes && ((UCHAR(*cs) == 0xC0) || (UCHAR(*ct) == 0xC0))) {
 	unsigned char c1, c2;
+
 	c1 = ((UCHAR(*cs) == 0xC0) && (UCHAR(cs[1]) == 0x80)) ? 0 : UCHAR(*cs);
 	c2 = ((UCHAR(*ct) == 0xC0) && (UCHAR(ct[1]) == 0x80)) ? 0 : UCHAR(*ct);
 	result = (c1 - c2);
@@ -1016,8 +1016,8 @@ TclpUtfNcmp2(cs, ct, n)
  *
  * Tcl_UtfNcmp --
  *
- *	Compare at most n UTF chars of string cs to string ct.  Both cs
- *	and ct are assumed to be at least n UTF chars long.
+ *	Compare at most numChars UTF chars of string cs to string ct. Both cs
+ *	and ct are assumed to be at least numChars UTF chars long.
  *
  * Results:
  *	Return <0 if cs < ct, 0 if cs == ct, or >0 if cs > ct.
@@ -1029,23 +1029,26 @@ TclpUtfNcmp2(cs, ct, n)
  */
 
 int
-Tcl_UtfNcmp(cs, ct, n)
-    CONST char *cs;		/* UTF string to compare to ct. */
-    CONST char *ct;		/* UTF string cs is compared to. */
-    unsigned long n;		/* Number of UTF chars to compare. */
+Tcl_UtfNcmp(
+    CONST char *cs,		/* UTF string to compare to ct. */
+    CONST char *ct,		/* UTF string cs is compared to. */
+    unsigned long numChars)	/* Number of UTF chars to compare. */
 {
     Tcl_UniChar ch1, ch2;
+
     /*
-     * Cannot use 'memcmp(cs, ct, n);' as byte representation of
-     * \u0000 (the pair of bytes 0xc0,0x80) is larger than byte
-     * representation of \u0001 (the byte 0x01.)
+     * Cannot use 'memcmp(cs, ct, n);' as byte representation of \u0000 (the
+     * pair of bytes 0xc0,0x80) is larger than byte representation of \u0001
+     * (the byte 0x01.)
      */
-    while (n-- > 0) {
+
+    while (numChars-- > 0) {
 	/*
-	 * n must be interpreted as chars, not bytes.
-	 * This should be called only when both strings are of
-	 * at least n chars long (no need for \0 check)
+	 * n must be interpreted as chars, not bytes. This should be called
+	 * only when both strings are of at least n chars long (no need for \0
+	 * check)
 	 */
+
 	cs += TclUtfToUniChar(cs, &ch1);
 	ct += TclUtfToUniChar(ct, &ch2);
 	if (ch1 != ch2) {
@@ -1060,9 +1063,9 @@ Tcl_UtfNcmp(cs, ct, n)
  *
  * Tcl_UtfNcasecmp --
  *
- *	Compare at most n UTF chars of string cs to string ct case
- *	insensitive.  Both cs and ct are assumed to be at least n
- *	UTF chars long.
+ *	Compare at most numChars UTF chars of string cs to string ct case
+ *	insensitive. Both cs and ct are assumed to be at least numChars UTF
+ *	chars long.
  *
  * Results:
  *	Return <0 if cs < ct, 0 if cs == ct, or >0 if cs > ct.
@@ -1074,13 +1077,13 @@ Tcl_UtfNcmp(cs, ct, n)
  */
 
 int
-Tcl_UtfNcasecmp(cs, ct, n)
-    CONST char *cs;		/* UTF string to compare to ct. */
-    CONST char *ct;		/* UTF string cs is compared to. */
-    unsigned long n;			/* Number of UTF chars to compare. */
+Tcl_UtfNcasecmp(
+    CONST char *cs,		/* UTF string to compare to ct. */
+    CONST char *ct,		/* UTF string cs is compared to. */
+    unsigned long numChars)	/* Number of UTF chars to compare. */
 {
     Tcl_UniChar ch1, ch2;
-    while (n-- > 0) {
+    while (numChars-- > 0) {
 	/*
 	 * n must be interpreted as chars, not bytes.
 	 * This should be called only when both strings are of
@@ -1116,8 +1119,8 @@ Tcl_UtfNcasecmp(cs, ct, n)
  */
 
 Tcl_UniChar
-Tcl_UniCharToUpper(ch)
-    int ch;			/* Unicode character to convert. */
+Tcl_UniCharToUpper(
+    int ch)			/* Unicode character to convert. */
 {
     int info = GetUniCharInfo(ch);
 
@@ -1144,8 +1147,8 @@ Tcl_UniCharToUpper(ch)
  */
 
 Tcl_UniChar
-Tcl_UniCharToLower(ch)
-    int ch;			/* Unicode character to convert. */
+Tcl_UniCharToLower(
+    int ch)			/* Unicode character to convert. */
 {
     int info = GetUniCharInfo(ch);
 
@@ -1172,8 +1175,8 @@ Tcl_UniCharToLower(ch)
  */
 
 Tcl_UniChar
-Tcl_UniCharToTitle(ch)
-    int ch;			/* Unicode character to convert. */
+Tcl_UniCharToTitle(
+    int ch)			/* Unicode character to convert. */
 {
     int info = GetUniCharInfo(ch);
     int mode = GetCaseType(info);
@@ -1195,7 +1198,7 @@ Tcl_UniCharToTitle(ch)
  *
  * Tcl_UniCharLen --
  *
- *	Find the length of a UniChar string.  The str input must be null
+ *	Find the length of a UniChar string. The str input must be null
  *	terminated.
  *
  * Results:
@@ -1208,14 +1211,14 @@ Tcl_UniCharToTitle(ch)
  */
 
 int
-Tcl_UniCharLen(str)
-    CONST Tcl_UniChar *str;	/* Unicode string to find length of. */
+Tcl_UniCharLen(
+    CONST Tcl_UniChar *uniStr)	/* Unicode string to find length of. */
 {
     int len = 0;
 
-    while (*str != '\0') {
+    while (*uniStr != '\0') {
 	len++;
-	str++;
+	uniStr++;
     }
     return len;
 }
@@ -1225,11 +1228,11 @@ Tcl_UniCharLen(str)
  *
  * Tcl_UniCharNcmp --
  *
- *	Compare at most n unichars of string cs to string ct.  Both cs
- *	and ct are assumed to be at least n unichars long.
+ *	Compare at most numChars unichars of string ucs to string uct.
+ *	Both ucs and uct are assumed to be at least numChars unichars long.
  *
  * Results:
- *	Return <0 if cs < ct, 0 if cs == ct, or >0 if cs > ct.
+ *	Return <0 if ucs < uct, 0 if ucs == uct, or >0 if ucs > uct.
  *
  * Side effects:
  *	None.
@@ -1238,24 +1241,26 @@ Tcl_UniCharLen(str)
  */
 
 int
-Tcl_UniCharNcmp(cs, ct, n)
-    CONST Tcl_UniChar *cs;		/* Unicode string to compare to ct. */
-    CONST Tcl_UniChar *ct;		/* Unicode string cs is compared to. */
-    unsigned long n;			/* Number of unichars to compare. */
+Tcl_UniCharNcmp(
+    CONST Tcl_UniChar *ucs,	/* Unicode string to compare to uct. */
+    CONST Tcl_UniChar *uct,	/* Unicode string ucs is compared to. */
+    unsigned long numChars)	/* Number of unichars to compare. */
 {
 #ifdef WORDS_BIGENDIAN
     /*
      * We are definitely on a big-endian machine; memcmp() is safe
      */
-    return memcmp(cs, ct, n*sizeof(Tcl_UniChar));
+
+    return memcmp(ucs, uct, numChars*sizeof(Tcl_UniChar));
 
 #else /* !WORDS_BIGENDIAN */
     /*
      * We can't simply call memcmp() because that is not lexically correct.
      */
-    for ( ; n != 0; cs++, ct++, n--) {
-	if (*cs != *ct) {
-	    return (*cs - *ct);
+
+    for ( ; numChars != 0; ucs++, uct++, numChars--) {
+	if (*ucs != *uct) {
+	    return (*ucs - *uct);
 	}
     }
     return 0;
@@ -1267,12 +1272,12 @@ Tcl_UniCharNcmp(cs, ct, n)
  *
  * Tcl_UniCharNcasecmp --
  *
- *	Compare at most n unichars of string cs to string ct case
- *	insensitive.  Both cs and ct are assumed to be at least n
+ *	Compare at most numChars unichars of string ucs to string uct case
+ *	insensitive. Both ucs and uct are assumed to be at least numChars
  *	unichars long.
  *
  * Results:
- *	Return <0 if cs < ct, 0 if cs == ct, or >0 if cs > ct.
+ *	Return <0 if ucs < uct, 0 if ucs == uct, or >0 if ucs > uct.
  *
  * Side effects:
  *	None.
@@ -1281,15 +1286,16 @@ Tcl_UniCharNcmp(cs, ct, n)
  */
 
 int
-Tcl_UniCharNcasecmp(cs, ct, n)
-    CONST Tcl_UniChar *cs;		/* Unicode string to compare to ct. */
-    CONST Tcl_UniChar *ct;		/* Unicode string cs is compared to. */
-    unsigned long n;			/* Number of unichars to compare. */
+Tcl_UniCharNcasecmp(
+    CONST Tcl_UniChar *ucs,	/* Unicode string to compare to uct. */
+    CONST Tcl_UniChar *uct,	/* Unicode string ucs is compared to. */
+    unsigned long numChars)	/* Number of unichars to compare. */
 {
-    for ( ; n != 0; n--, cs++, ct++) {
-	if (*cs != *ct) {
-	    Tcl_UniChar lcs = Tcl_UniCharToLower(*cs);
-	    Tcl_UniChar lct = Tcl_UniCharToLower(*ct);
+    for ( ; numChars != 0; numChars--, ucs++, uct++) {
+	if (*ucs != *uct) {
+	    Tcl_UniChar lcs = Tcl_UniCharToLower(*ucs);
+	    Tcl_UniChar lct = Tcl_UniCharToLower(*uct);
+
 	    if (lcs != lct) {
 		return (lcs - lct);
 	    }
@@ -1315,8 +1321,8 @@ Tcl_UniCharNcasecmp(cs, ct, n)
  */
 
 int
-Tcl_UniCharIsAlnum(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsAlnum(
+    int ch)			/* Unicode character to test. */
 {
     return (((ALPHA_BITS | DIGIT_BITS) >> GetCategory(ch)) & 1);
 }
@@ -1338,8 +1344,8 @@ Tcl_UniCharIsAlnum(ch)
  */
 
 int
-Tcl_UniCharIsAlpha(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsAlpha(
+    int ch)			/* Unicode character to test. */
 {
     return ((ALPHA_BITS >> GetCategory(ch)) & 1);
 }
@@ -1361,8 +1367,8 @@ Tcl_UniCharIsAlpha(ch)
  */
 
 int
-Tcl_UniCharIsControl(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsControl(
+    int ch)			/* Unicode character to test. */
 {
     return ((CONTROL_BITS >> GetCategory(ch)) & 1);
 }
@@ -1384,8 +1390,8 @@ Tcl_UniCharIsControl(ch)
  */
 
 int
-Tcl_UniCharIsDigit(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsDigit(
+    int ch)			/* Unicode character to test. */
 {
     return (GetCategory(ch) == DECIMAL_DIGIT_NUMBER);
 }
@@ -1407,8 +1413,8 @@ Tcl_UniCharIsDigit(ch)
  */
 
 int
-Tcl_UniCharIsGraph(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsGraph(
+    int ch)			/* Unicode character to test. */
 {
     return ((GRAPH_BITS >> GetCategory(ch)) & 1);
 }
@@ -1430,8 +1436,8 @@ Tcl_UniCharIsGraph(ch)
  */
 
 int
-Tcl_UniCharIsLower(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsLower(
+    int ch)			/* Unicode character to test. */
 {
     return (GetCategory(ch) == LOWERCASE_LETTER);
 }
@@ -1453,8 +1459,8 @@ Tcl_UniCharIsLower(ch)
  */
 
 int
-Tcl_UniCharIsPrint(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsPrint(
+    int ch)			/* Unicode character to test. */
 {
     return (((GRAPH_BITS|SPACE_BITS) >> GetCategory(ch)) & 1);
 }
@@ -1476,8 +1482,8 @@ Tcl_UniCharIsPrint(ch)
  */
 
 int
-Tcl_UniCharIsPunct(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsPunct(
+    int ch)			/* Unicode character to test. */
 {
     return ((PUNCT_BITS >> GetCategory(ch)) & 1);
 }
@@ -1499,8 +1505,8 @@ Tcl_UniCharIsPunct(ch)
  */
 
 int
-Tcl_UniCharIsSpace(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsSpace(
+    int ch)			/* Unicode character to test. */
 {
     /*
      * If the character is within the first 127 characters, just use the
@@ -1531,8 +1537,8 @@ Tcl_UniCharIsSpace(ch)
  */
 
 int
-Tcl_UniCharIsUpper(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsUpper(
+    int ch)			/* Unicode character to test. */
 {
     return (GetCategory(ch) == UPPERCASE_LETTER);
 }
@@ -1542,8 +1548,7 @@ Tcl_UniCharIsUpper(ch)
  *
  * Tcl_UniCharIsWordChar --
  *
- *	Test if a character is alphanumeric or a connector punctuation
- *	mark.
+ *	Test if a character is alphanumeric or a connector punctuation mark.
  *
  * Results:
  *	Returns 1 if character is a word character.
@@ -1555,8 +1560,8 @@ Tcl_UniCharIsUpper(ch)
  */
 
 int
-Tcl_UniCharIsWordChar(ch)
-    int ch;			/* Unicode character to test. */
+Tcl_UniCharIsWordChar(
+    int ch)			/* Unicode character to test. */
 {
     return ((WORD_BITS >> GetCategory(ch)) & 1);
 }
@@ -1567,17 +1572,16 @@ Tcl_UniCharIsWordChar(ch)
  * Tcl_UniCharCaseMatch --
  *
  *	See if a particular Unicode string matches a particular pattern.
- *	Allows case insensitivity.  This is the Unicode equivalent of
- *	the char* Tcl_StringCaseMatch.  The UniChar strings must be
- *	NULL-terminated.  This has no provision for counted UniChar
- *	strings, thus should not be used where NULLs are expected in the
- *	UniChar string.  Use TclUniCharMatch where possible.
+ *	Allows case insensitivity. This is the Unicode equivalent of the char*
+ *	Tcl_StringCaseMatch. The UniChar strings must be NULL-terminated.
+ *	This has no provision for counted UniChar strings, thus should not be
+ *	used where NULLs are expected in the UniChar string. Use
+ *	TclUniCharMatch where possible.
  *
  * Results:
- *	The return value is 1 if string matches pattern, and
- *	0 otherwise.  The matching operation permits the following
- *	special characters in the pattern: *?\[] (see the manual
- *	entry for details on what these mean).
+ *	The return value is 1 if string matches pattern, and 0 otherwise. The
+ *	matching operation permits the following special characters in the
+ *	pattern: *?\[] (see the manual entry for details on what these mean).
  *
  * Side effects:
  *	None.
@@ -1586,33 +1590,34 @@ Tcl_UniCharIsWordChar(ch)
  */
 
 int
-Tcl_UniCharCaseMatch(string, pattern, nocase)
-    CONST Tcl_UniChar *string;	/* Unicode String. */
-    CONST Tcl_UniChar *pattern;	/* Pattern, which may contain special
+Tcl_UniCharCaseMatch(
+    CONST Tcl_UniChar *uniStr,	/* Unicode String. */
+    CONST Tcl_UniChar *uniPattern,
+				/* Pattern, which may contain special
 				 * characters. */
-    int nocase;			/* 0 for case sensitive, 1 for insensitive */
+    int nocase)			/* 0 for case sensitive, 1 for insensitive */
 {
     Tcl_UniChar ch1, p;
 
     while (1) {
-	p = *pattern;
+	p = *uniPattern;
 
 	/*
-	 * See if we're at the end of both the pattern and the string.  If
-	 * so, we succeeded.  If we're at the end of the pattern but not at
-	 * the end of the string, we failed.
+	 * See if we're at the end of both the pattern and the string. If so,
+	 * we succeeded. If we're at the end of the pattern but not at the end
+	 * of the string, we failed.
 	 */
 
 	if (p == 0) {
-	    return (*string == 0);
+	    return (*uniStr == 0);
 	}
-	if ((*string == 0) && (p != '*')) {
+	if ((*uniStr == 0) && (p != '*')) {
 	    return 0;
 	}
 
 	/*
-	 * Check for a "*" as the next pattern character.  It matches any
-	 * substring.  We handle this by skipping all the characters up to the
+	 * Check for a "*" as the next pattern character. It matches any
+	 * substring. We handle this by skipping all the characters up to the
 	 * next matching one in the pattern, and then calling ourselves
 	 * recursively for each postfix of string, until either we match or we
 	 * reach the end of the string.
@@ -1622,8 +1627,11 @@ Tcl_UniCharCaseMatch(string, pattern, nocase)
 	    /*
 	     * Skip all successive *'s in the pattern
 	     */
-	    while (*(++pattern) == '*') {}
-	    p = *pattern;
+
+	    while (*(++uniPattern) == '*') {
+		/* empty body */
+	    }
+	    p = *uniPattern;
 	    if (p == 0) {
 		return 1;
 	    }
@@ -1636,63 +1644,67 @@ Tcl_UniCharCaseMatch(string, pattern, nocase)
 		 * quickly if the next char in the pattern isn't a special
 		 * character
 		 */
+
 		if ((p != '[') && (p != '?') && (p != '\\')) {
 		    if (nocase) {
-			while (*string && (p != *string)
-				&& (p != Tcl_UniCharToLower(*string))) {
-			    string++;
+			while (*uniStr && (p != *uniStr)
+				&& (p != Tcl_UniCharToLower(*uniStr))) {
+			    uniStr++;
 			}
 		    } else {
-			while (*string && (p != *string)) { string++; }
+			while (*uniStr && (p != *uniStr)) {
+			    uniStr++;
+			}
 		    }
 		}
-		if (Tcl_UniCharCaseMatch(string, pattern, nocase)) {
+		if (Tcl_UniCharCaseMatch(uniStr, uniPattern, nocase)) {
 		    return 1;
 		}
-		if (*string == 0) {
+		if (*uniStr == 0) {
 		    return 0;
 		}
-		string++;
+		uniStr++;
 	    }
 	}
 
 	/*
-	 * Check for a "?" as the next pattern character.  It matches
-	 * any single character.
+	 * Check for a "?" as the next pattern character. It matches any
+	 * single character.
 	 */
 
 	if (p == '?') {
-	    pattern++;
-	    string++;
+	    uniPattern++;
+	    uniStr++;
 	    continue;
 	}
 
 	/*
-	 * Check for a "[" as the next pattern character.  It is followed
-	 * by a list of characters that are acceptable, or by a range
-	 * (two characters separated by "-").
+	 * Check for a "[" as the next pattern character. It is followed by a
+	 * list of characters that are acceptable, or by a range (two
+	 * characters separated by "-").
 	 */
 
 	if (p == '[') {
 	    Tcl_UniChar startChar, endChar;
 
-	    pattern++;
-	    ch1 = (nocase ? Tcl_UniCharToLower(*string) : *string);
-	    string++;
+	    uniPattern++;
+	    ch1 = (nocase ? Tcl_UniCharToLower(*uniStr) : *uniStr);
+	    uniStr++;
 	    while (1) {
-		if ((*pattern == ']') || (*pattern == 0)) {
+		if ((*uniPattern == ']') || (*uniPattern == 0)) {
 		    return 0;
 		}
-		startChar = (nocase ? Tcl_UniCharToLower(*pattern) : *pattern);
-		pattern++;
-		if (*pattern == '-') {
-		    pattern++;
-		    if (*pattern == 0) {
+		startChar = (nocase ? Tcl_UniCharToLower(*uniPattern)
+			: *uniPattern);
+		uniPattern++;
+		if (*uniPattern == '-') {
+		    uniPattern++;
+		    if (*uniPattern == 0) {
 			return 0;
 		    }
-		    endChar = (nocase ? Tcl_UniCharToLower(*pattern)
-			    : *pattern);
-		    pattern++;
+		    endChar = (nocase ? Tcl_UniCharToLower(*uniPattern)
+			    : *uniPattern);
+		    uniPattern++;
 		    if (((startChar <= ch1) && (ch1 <= endChar))
 			    || ((endChar <= ch1) && (ch1 <= startChar))) {
 			/*
@@ -1704,42 +1716,43 @@ Tcl_UniCharCaseMatch(string, pattern, nocase)
 		    break;
 		}
 	    }
-	    while (*pattern != ']') {
-		if (*pattern == 0) {
-		    pattern--;
+	    while (*uniPattern != ']') {
+		if (*uniPattern == 0) {
+		    uniPattern--;
 		    break;
 		}
-		pattern++;
+		uniPattern++;
 	    }
-	    pattern++;
+	    uniPattern++;
 	    continue;
 	}
 
 	/*
-	 * If the next pattern character is '\', just strip off the '\'
-	 * so we do exact matching on the character that follows.
+	 * If the next pattern character is '\', just strip off the '\' so we
+	 * do exact matching on the character that follows.
 	 */
 
 	if (p == '\\') {
-	    if (*(++pattern) == '\0') {
+	    if (*(++uniPattern) == '\0') {
 		return 0;
 	    }
 	}
 
 	/*
-	 * There's no special character.  Just make sure that the next
-	 * bytes of each string match.
+	 * There's no special character. Just make sure that the next bytes of
+	 * each string match.
 	 */
 
 	if (nocase) {
-	    if (Tcl_UniCharToLower(*string) != Tcl_UniCharToLower(*pattern)) {
+	    if (Tcl_UniCharToLower(*uniStr) !=
+		    Tcl_UniCharToLower(*uniPattern)) {
 		return 0;
 	    }
-	} else if (*string != *pattern) {
+	} else if (*uniStr != *uniPattern) {
 	    return 0;
 	}
-	string++;
-	pattern++;
+	uniStr++;
+	uniPattern++;
     }
 }
 
@@ -1749,15 +1762,14 @@ Tcl_UniCharCaseMatch(string, pattern, nocase)
  * TclUniCharMatch --
  *
  *	See if a particular Unicode string matches a particular pattern.
- *	Allows case insensitivity.  This is the Unicode equivalent of the
- *	char* Tcl_StringCaseMatch.  This variant of Tcl_UniCharCaseMatch
- *	uses counted Strings, so embedded NULLs are allowed.
+ *	Allows case insensitivity. This is the Unicode equivalent of the char*
+ *	Tcl_StringCaseMatch. This variant of Tcl_UniCharCaseMatch uses counted
+ *	Strings, so embedded NULLs are allowed.
  *
  * Results:
- *	The return value is 1 if string matches pattern, and
- *	0 otherwise.  The matching operation permits the following
- *	special characters in the pattern: *?\[] (see the manual
- *	entry for details on what these mean).
+ *	The return value is 1 if string matches pattern, and 0 otherwise. The
+ *	matching operation permits the following special characters in the
+ *	pattern: *?\[] (see the manual entry for details on what these mean).
  *
  * Side effects:
  *	None.
@@ -1766,25 +1778,25 @@ Tcl_UniCharCaseMatch(string, pattern, nocase)
  */
 
 int
-TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
-    CONST Tcl_UniChar *string;	/* Unicode String. */
-    int strLen;			/* length of String */
-    CONST Tcl_UniChar *pattern;	/* Pattern, which may contain special
+TclUniCharMatch(
+    CONST Tcl_UniChar *string,	/* Unicode String. */
+    int strLen,			/* Length of String */
+    CONST Tcl_UniChar *pattern,	/* Pattern, which may contain special
 				 * characters. */
-    int ptnLen;			/* length of Pattern */
-    int nocase;			/* 0 for case sensitive, 1 for insensitive */
+    int ptnLen,			/* Length of Pattern */
+    int nocase)			/* 0 for case sensitive, 1 for insensitive */
 {
     CONST Tcl_UniChar *stringEnd, *patternEnd;
     Tcl_UniChar p;
 
-    stringEnd  = string + strLen;
+    stringEnd = string + strLen;
     patternEnd = pattern + ptnLen;
 
     while (1) {
 	/*
-	 * See if we're at the end of both the pattern and the string.  If
-	 * so, we succeeded.  If we're at the end of the pattern but not at
-	 * the end of the string, we failed.
+	 * See if we're at the end of both the pattern and the string. If so,
+	 * we succeeded. If we're at the end of the pattern but not at the end
+	 * of the string, we failed.
 	 */
 
 	if (pattern == patternEnd) {
@@ -1796,8 +1808,8 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 	}
 
 	/*
-	 * Check for a "*" as the next pattern character.  It matches any
-	 * substring.  We handle this by skipping all the characters up to the
+	 * Check for a "*" as the next pattern character. It matches any
+	 * substring. We handle this by skipping all the characters up to the
 	 * next matching one in the pattern, and then calling ourselves
 	 * recursively for each postfix of string, until either we match or we
 	 * reach the end of the string.
@@ -1805,9 +1817,12 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 
 	if (p == '*') {
 	    /*
-	     * Skip all successive *'s in the pattern
+	     * Skip all successive *'s in the pattern.
 	     */
-	    while (*(++pattern) == '*') {}
+
+	    while (*(++pattern) == '*') {
+		/* empty body */
+	    }
 	    if (pattern == patternEnd) {
 		return 1;
 	    }
@@ -1819,8 +1834,9 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 		/*
 		 * Optimization for matching - cruise through the string
 		 * quickly if the next char in the pattern isn't a special
-		 * character
+		 * character.
 		 */
+
 		if ((p != '[') && (p != '?') && (p != '\\')) {
 		    if (nocase) {
 			while ((string < stringEnd) && (p != *string)
@@ -1845,8 +1861,8 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 	}
 
 	/*
-	 * Check for a "?" as the next pattern character.  It matches
-	 * any single character.
+	 * Check for a "?" as the next pattern character. It matches any
+	 * single character.
 	 */
 
 	if (p == '?') {
@@ -1856,9 +1872,9 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 	}
 
 	/*
-	 * Check for a "[" as the next pattern character.  It is followed
-	 * by a list of characters that are acceptable, or by a range
-	 * (two characters separated by "-").
+	 * Check for a "[" as the next pattern character. It is followed by a
+	 * list of characters that are acceptable, or by a range (two
+	 * characters separated by "-").
 	 */
 
 	if (p == '[') {
@@ -1904,8 +1920,8 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 	}
 
 	/*
-	 * If the next pattern character is '\', just strip off the '\'
-	 * so we do exact matching on the character that follows.
+	 * If the next pattern character is '\', just strip off the '\' so we
+	 * do exact matching on the character that follows.
 	 */
 
 	if (p == '\\') {
@@ -1915,8 +1931,8 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 	}
 
 	/*
-	 * There's no special character.  Just make sure that the next
-	 * bytes of each string match.
+	 * There's no special character. Just make sure that the next bytes of
+	 * each string match.
 	 */
 
 	if (nocase) {
@@ -1930,3 +1946,11 @@ TclUniCharMatch(string, strLen, pattern, ptnLen, nocase)
 	pattern++;
     }
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclUtil.c b/generic/tclUtil.c
index b327b99..5f4cdae 100644
--- a/generic/tclUtil.c
+++ b/generic/tclUtil.c
@@ -1,118 +1,466 @@
-/* 
+/*
  * tclUtil.c --
  *
- *	This file contains utility procedures that are used by many Tcl
+ *	This file contains utility functions that are used by many Tcl
  *	commands.
  *
  * Copyright (c) 1987-1993 The Regents of the University of California.
  * Copyright (c) 1994-1998 Sun Microsystems, Inc.
- * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+ * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
+#include <float.h>
+#include <math.h>
 
 /*
- * The following variable holds the full path name of the binary
- * from which this application was executed, or NULL if it isn't
- * know.  The value of the variable is set by the procedure
- * Tcl_FindExecutable.  The storage space is dynamically allocated.
+ * The absolute pathname of the executable in which this Tcl library is
+ * running.
  */
 
-char *tclExecutableName = NULL;
-char *tclNativeExecutableName = NULL;
+static ProcessGlobalValue executableName = {
+    0, 0, NULL, NULL, NULL, NULL, NULL
+};
 
 /*
- * The following values are used in the flags returned by Tcl_ScanElement
- * and used by Tcl_ConvertElement.  The value TCL_DONT_USE_BRACES is also
- * defined in tcl.h;  make sure its value doesn't overlap with any of the
- * values below.
- *
- * TCL_DONT_USE_BRACES -	1 means the string mustn't be enclosed in
- *				braces (e.g. it contains unmatched braces,
- *				or ends in a backslash character, or user
- *				just doesn't want braces);  handle all
- *				special characters by adding backslashes.
- * USE_BRACES -			1 means the string contains a special
- *				character that can be handled simply by
- *				enclosing the entire argument in braces.
- * BRACES_UNMATCHED -		1 means that braces aren't properly matched
- *				in the argument.
+ * The following values are used in the flags arguments of Tcl*Scan*Element and
+ * Tcl*Convert*Element. The values TCL_DONT_USE_BRACES and TCL_DONT_QUOTE_HASH
+ * are defined in tcl.h, like so:
+ *
+#define TCL_DONT_USE_BRACES     1
+#define TCL_DONT_QUOTE_HASH     8
+ *
+ * Those are public flag bits which callers of the public routines
+ * Tcl_Convert*Element() can use to indicate:
+ *
+ * TCL_DONT_USE_BRACES -	1 means the caller is insisting that brace
+ *				quoting not be used when converting the list
+ *				element.
+ * TCL_DONT_QUOTE_HASH -	1 means the caller insists that a leading hash
+ * 				character ('#') should *not* be quoted. This
+ * 				is appropriate when the caller can guarantee
+ * 				the element is not the first element of a
+ * 				list, so [eval] cannot mis-parse the element
+ * 				as a comment.
+ *
+ * The remaining values which can be carried by the flags of these routines
+ * are for internal use only.  Make sure they do not overlap with the public
+ * values above.
+ *
+ * The Tcl*Scan*Element() routines make a determination which of 4 modes of
+ * conversion is most appropriate for Tcl*Convert*Element() to perform, and
+ * sets two bits of the flags value to indicate the mode selected.
+ *
+ * CONVERT_NONE		The element needs no quoting.  Its literal string
+ *			is suitable as is.
+ * CONVERT_BRACE	The conversion should be enclosing the literal string
+ *			in braces.
+ * CONVERT_ESCAPE	The conversion should be using backslashes to escape
+ *			any characters in the string that require it.
+ * CONVERT_MASK		A mask value used to extract the conversion mode from
+ *			the flags argument.
+ *			Also indicates a strange conversion mode where all
+ *			special characters are escaped with backslashes 
+ *			*except for braces*.  This is a strange and unnecessary
+ *			case, but it's part of the historical way in which
+ *			lists have been formatted in Tcl.  To experiment with
+ *			removing this case, set the value of COMPAT to 0.
+ *
+ * One last flag value is used only by callers of TclScanElement().  The flag
+ * value produced by a call to Tcl*Scan*Element() will never leave this bit
+ * set.
+ *
+ * CONVERT_ANY		The caller of TclScanElement() declares it can make
+ *			no promise about what public flags will be passed to
+ *			the matching call of TclConvertElement().  As such,
+ *			TclScanElement() has to determine the worst case
+ *			destination buffer length over all possibilities, and
+ *			in other cases this means an overestimate of the
+ *			required size.
+ *
+ * For more details, see the comments on the Tcl*Scan*Element and 
+ * Tcl*Convert*Element routines.
  */
 
-#define USE_BRACES		2
-#define BRACES_UNMATCHED	4
+#define COMPAT 1
+#define CONVERT_NONE	0
+#define CONVERT_BRACE	2
+#define CONVERT_ESCAPE	4
+#define CONVERT_MASK	(CONVERT_BRACE | CONVERT_ESCAPE)
+#define CONVERT_ANY	16
 
 /*
- * The following values determine the precision used when converting
- * floating-point values to strings.  This information is linked to all
- * of the tcl_precision variables in all interpreters via the procedure
- * TclPrecTraceProc.
+ * The following key is used by Tcl_PrintDouble and TclPrecTraceProc to
+ * access the precision to be used for double formatting.
  */
 
-static char precisionString[10] = "12";
-				/* The string value of all the tcl_precision
-				 * variables. */
-static char precisionFormat[10] = "%.12g";
-				/* The format string actually used in calls
-				 * to sprintf. */
-TCL_DECLARE_MUTEX(precisionMutex)
+static Tcl_ThreadDataKey precisionKey;
 
 /*
- * Prototypes for procedures defined later in this file.
+ * Prototypes for functions defined later in this file.
  */
 
-static void UpdateStringOfEndOffset _ANSI_ARGS_((Tcl_Obj* objPtr));
-static int SetEndOffsetFromAny _ANSI_ARGS_((Tcl_Interp* interp,
-					    Tcl_Obj* objPtr));
+static void		ClearHash(Tcl_HashTable *tablePtr);
+static void		FreeProcessGlobalValue(ClientData clientData);
+static void		FreeThreadHash(ClientData clientData);
+static Tcl_HashTable *	GetThreadHash(Tcl_ThreadDataKey *keyPtr);
+static int		SetEndOffsetFromAny(Tcl_Interp* interp,
+			    Tcl_Obj* objPtr);
+static void		UpdateStringOfEndOffset(Tcl_Obj* objPtr);
 
 /*
- * The following is the Tcl object type definition for an object
- * that represents a list index in the form, "end-offset".  It is
- * used as a performance optimization in TclGetIntForIndex.  The
- * internal rep is an integer, so no memory management is required
- * for it.
+ * The following is the Tcl object type definition for an object that
+ * represents a list index in the form, "end-offset". It is used as a
+ * performance optimization in TclGetIntForIndex. The internal rep is an
+ * integer, so no memory management is required for it.
  */
 
 Tcl_ObjType tclEndOffsetType = {
     "end-offset",			/* name */
-    (Tcl_FreeInternalRepProc*) NULL,    /* freeIntRepProc */
-    (Tcl_DupInternalRepProc*) NULL,     /* dupIntRepProc */
+    NULL,				/* freeIntRepProc */
+    NULL,				/* dupIntRepProc */
     UpdateStringOfEndOffset,		/* updateStringProc */
-    SetEndOffsetFromAny    
+    SetEndOffsetFromAny
 };
+
+/*
+ *	*	STRING REPRESENTATION OF LISTS	*	*	*
+ *
+ * The next several routines implement the conversions of strings to and
+ * from Tcl lists.  To understand their operation, the rules of parsing
+ * and generating the string representation of lists must be known.  Here
+ * we describe them in one place.
+ *
+ * A list is made up of zero or more elements.  Any string is a list if
+ * it is made up of alternating substrings of element-separating ASCII
+ * whitespace and properly formatted elements.
+ *
+ * The ASCII characters which can make up the whitespace between list
+ * elements are:
+ *
+ *	\u0009	\t	TAB
+ *	\u000A	\n	NEWLINE
+ *	\u000B	\v	VERTICAL TAB
+ *	\u000C	\f	FORM FEED
+ * 	\u000D	\r	CARRIAGE RETURN
+ *	\u0020		SPACE
+ *
+ * NOTE: differences between this and other places where Tcl defines a role
+ * for "whitespace".
+ *
+ *	* Unlike command parsing, here NEWLINE is just another whitespace
+ *	  character; its role as a command terminator in a script has no
+ *	  importance here.
+ *
+ *	* Unlike command parsing, the BACKSLASH NEWLINE sequence is not
+ *	  considered to be a whitespace character.
+ *
+ *	* Other Unicode whitespace characters (recognized by
+ *	  [string is space] or Tcl_UniCharIsSpace()) do not play any role
+ *	  as element separators in Tcl lists.
+ *
+ *	* The NUL byte ought not appear, as it is not in strings properly
+ *	  encoded for Tcl, but if it is present, it is not treated as
+ *	  separating whitespace, or a string terminator.  It is just
+ *	  another character in a list element.
+ *
+ * The interpretation of a formatted substring as a list element follows
+ * rules similar to the parsing of the words of a command in a Tcl script.
+ * Backslash substitution plays a key role, and is defined exactly as it is
+ * in command parsing.  The same routine, TclParseBackslash() is used in both
+ * command parsing and list parsing.  
+ *
+ * NOTE:  This means that if and when backslash substitution rules ever
+ * change for command parsing, the interpretation of strings as lists also
+ * changes.
+ * 
+ * Backslash substitution replaces an "escape sequence" of one or more
+ * characters starting with
+ *		\u005c	\	BACKSLASH
+ * with a single character.  The one character escape sequence case happens
+ * only when BACKSLASH is the last character in the string.  In all other
+ * cases, the escape sequence is at least two characters long.
+ *
+ * The formatted substrings are interpreted as element values according to
+ * the following cases:
+ *
+ * * If the first character of a formatted substring is
+ *		\u007b	{	OPEN BRACE
+ *   then the end of the substring is the matching 
+ *		\u007d	}	CLOSE BRACE
+ *   character, where matching is determined by counting nesting levels,
+ *   and not including any brace characters that are contained within a
+ *   backslash escape sequence in the nesting count.  Having found the
+ *   matching brace, all characters between the braces are the string
+ *   value of the element.  If no matching close brace is found before the
+ *   end of the string, the string is not a Tcl list.  If the character
+ *   following the close brace is not an element separating whitespace
+ *   character, or the end of the string, then the string is not a Tcl list.
+ *
+ *   NOTE: this differs from a brace-quoted word in the parsing of a
+ *   Tcl command only in its treatment of the backslash-newline sequence.
+ *   In a list element, the literal characters in the backslash-newline
+ *   sequence become part of the element value.  In a script word,
+ *   conversion to a single SPACE character is done.
+ *
+ *   NOTE: Most list element values can be represented by a formatted
+ *   substring using brace quoting.  The exceptions are any element value
+ *   that includes an unbalanced brace not in a backslash escape sequence,
+ *   and any value that ends with a backslash not itself in a backslash
+ *   escape sequence.
+ * 
+ * * If the first character of a formatted substring is
+ *		\u0022	"	QUOTE
+ *   then the end of the substring is the next QUOTE character, not counting
+ *   any QUOTE characters that are contained within a backslash escape
+ *   sequence.  If no next QUOTE is found before the end of the string, the
+ *   string is not a Tcl list.  If the character following the closing QUOTE
+ *   is not an element separating whitespace character, or the end of the
+ *   string, then the string is not a Tcl list.  Having found the limits
+ *   of the substring, the element value is produced by performing backslash
+ *   substitution on the character sequence between the open and close QUOTEs.
+ *
+ *   NOTE: Any element value can be represented by this style of formatting,
+ *   given suitable choice of backslash escape sequences.
+ *
+ * * All other formatted substrings are terminated by the next element
+ *   separating whitespace character in the string.  Having found the limits
+ *   of the substring, the element value is produced by performing backslash
+ *   substitution on it.
+ *
+ *   NOTE:  Any element value can be represented by this style of formatting,
+ *   given suitable choice of backslash escape sequences, with one exception.
+ *   The empty string cannot be represented as a list element without the use
+ *   of either braces or quotes to delimit it.
+ *
+ * This collection of parsing rules is implemented in the routine
+ * TclFindElement().
+ *
+ * In order to produce lists that can be parsed by these rules, we need
+ * the ability to distinguish between characters that are part of a list
+ * element value from characters providing syntax that define the structure
+ * of the list.  This means that our code that generates lists must at a
+ * minimum be able to produce escape sequences for the 10 characters
+ * identified above that have significance to a list parser.
+ *
+ *	*	*	CANONICAL LISTS	*	*	*	*	*	
+ *
+ * In addition to the basic rules for parsing strings into Tcl lists, there
+ * are additional properties to be met by the set of list values that are
+ * generated by Tcl.  Such list values are often said to be in "canonical
+ * form":
+ *
+ * * When any canonical list is evaluated as a Tcl script, it is a script
+ *   of either zero commands (an empty list) or exactly one command.  The
+ *   command word is exactly the first element of the list, and each argument
+ *   word is exactly one of the following elements of the list.  This means
+ *   that any characters that have special meaning during script evaluation
+ *   need special treatment when canonical lists are produced:
+ *
+ *	* Whitespace between elements may not include NEWLINE.
+ *	* The command terminating character,
+ *		\u003b	;	SEMICOLON
+ *	  must be BRACEd, QUOTEd, or escaped so that it does not terminate
+ * 	  the command prematurely.
+ *	* Any of the characters that begin substitutions in scripts,
+ *		\u0024	$	DOLLAR
+ *		\u005b	[	OPEN BRACKET
+ *		\u005c	\	BACKSLASH
+ *	  need to be BRACEd or escaped.
+ *	* In any list where the first character of the first element is
+ *		\u0023	#	HASH
+ *	  that HASH character must be BRACEd, QUOTEd, or escaped so that it
+ *	  does not convert the command into a comment.
+ *	* Any list element that contains the character sequence
+ *	  BACKSLASH NEWLINE cannot be formatted with BRACEs.  The
+ *	  BACKSLASH character must be represented by an escape
+ *	  sequence, and unless QUOTEs are used, the NEWLINE must
+ *	  be as well.
+ *
+ * * It is also guaranteed that one can use a canonical list as a building
+ *   block of a larger script within command substitution, as in this example:
+ *	set script "puts \[[list $cmd $arg]]"; eval $script
+ *   To support this usage, any appearance of the character
+ *		\u005d	]	CLOSE BRACKET
+ *   in a list element must be BRACEd, QUOTEd, or escaped.
+ *
+ * * Finally it is guaranteed that enclosing a canonical list in braces
+ *   produces a new value that is also a canonical list.  This new list has
+ *   length 1, and its only element is the original canonical list.  This
+ *   same guarantee also makes it possible to construct scripts where an
+ *   argument word is given a list value by enclosing the canonical form
+ *   of that list in braces:
+ *	set script "puts {[list $one $two $three]}"; eval $script
+ *   This sort of coding was once fairly common, though it's become more
+ *   idiomatic to see the following instead:
+ *	set script [list puts [list $one $two $three]]; eval $script
+ *   In order to support this guarantee, every canonical list must have 
+ *   balance when counting those braces that are not in escape sequences.
+ *
+ * Within these constraints, the canonical list generation routines
+ * TclScanElement() and TclConvertElement() attempt to generate the string
+ * for any list that is easiest to read.  When an element value is itself
+ * acceptable as the formatted substring, it is usually used (CONVERT_NONE).
+ * When some quoting or escaping is required, use of BRACEs (CONVERT_BRACE)
+ * is usually preferred over the use of escape sequences (CONVERT_ESCAPE).
+ * There are some exceptions to both of these preferences for reasons of
+ * code simplicity, efficiency, and continuation of historical habits.
+ * Canonical lists never use the QUOTE formatting to delimit their elements
+ * because that form of quoting does not nest, which makes construction of
+ * nested lists far too much trouble.  Canonical lists always use only a
+ * single SPACE character for element-separating whitespace.
+ *
+ *	*	*	FUTURE CONSIDERATIONS	*	*	*
+ *
+ * When a list element requires quoting or escaping due to a CLOSE BRACKET
+ * character or an internal QUOTE character, a strange formatting mode is
+ * recommended.  For example, if the value "a{b]c}d" is converted by the
+ * usual modes:
+ *
+ *	CONVERT_BRACE:	a{b]c}d		=> {a{b]c}d}
+ *	CONVERT_ESCAPE:	a{b]c}d		=> a\{b\]c\}d
+ *
+ * we get perfectly usable formatted list elements.  However, this is not
+ * what Tcl releases have been producing.  Instead, we have:
+ *
+ *	CONVERT_MASK:	a{b]c}d		=> a{b\]c}d
+ *
+ * where the CLOSE BRACKET is escaped, but the BRACEs are not.  The same
+ * effect can be seen replacing ] with " in this example.  There does not
+ * appear to be any functional or aesthetic purpose for this strange
+ * additional mode.  The sole purpose I can see for preserving it is to
+ * keep generating the same formatted lists programmers have become accustomed
+ * to, and perhaps written tests to expect.  That is, compatibility only.
+ * The additional code complexity required to support this mode is significant.
+ * The lines of code supporting it are delimited in the routines below with
+ * #if COMPAT directives.  This makes it easy to experiment with eliminating
+ * this formatting mode simply with "#define COMPAT 0" above.  I believe
+ * this is worth considering.
+ * 
+ * Another consideration is the treatment of QUOTE characters in list elements.
+ * TclConvertElement() must have the ability to produce the escape sequence
+ * \" so that when a list element begins with a QUOTE we do not confuse
+ * that first character with a QUOTE used as list syntax to define list
+ * structure.  However, that is the only place where QUOTE characters need
+ * quoting.  In this way, handling QUOTE could really be much more like
+ * the way we handle HASH which also needs quoting and escaping only in
+ * particular situations.  Following up this could increase the set of
+ * list elements that can use the CONVERT_NONE formatting mode.
+ *
+ * More speculative is that the demands of canonical list form require brace
+ * balance for the list as a whole, while the current implementation achieves
+ * this by establishing brace balance for every element.
+ *
+ * Finally, a reminder that the rules for parsing and formatting lists are
+ * closely tied together with the rules for parsing and evaluating scripts,
+ * and will need to evolve in sync.
+ */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclMaxListLength --
+ *
+ *	Given 'bytes' pointing to 'numBytes' bytes, scan through them and
+ *	count the number of whitespace runs that could be list element
+ *	separators.  If 'numBytes' is -1, scan to the terminating '\0'.
+ *	Not a full list parser.  Typically used to get a quick and dirty
+ *	overestimate of length size in order to allocate space for an
+ *	actual list parser to operate with.
+ *
+ * Results:
+ *	Returns the largest number of list elements that could possibly
+ *	be in this string, interpreted as a Tcl list.  If 'endPtr' is not
+ *	NULL, writes a pointer to the end of the string scanned there.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclMaxListLength(
+    CONST char *bytes,
+    int numBytes,
+    CONST char **endPtr)
+{
+    int count = 0;
+
+    if ((numBytes == 0) || ((numBytes == -1) && (*bytes == '\0'))) {
+	/* Empty string case - quick exit */
+	goto done;
+    }
 
+    /* No list element before leading white space */
+    count += 1 - TclIsSpaceProc(*bytes); 
+
+    /* Count white space runs as potential element separators */
+    while (numBytes) {
+	if ((numBytes == -1) && (*bytes == '\0')) {
+	    break;
+	}
+	if (TclIsSpaceProc(*bytes)) {
+	    /* Space run started; bump count */
+	    count++;
+	    do {
+		bytes++;
+		numBytes -= (numBytes != -1);
+	    } while (numBytes && TclIsSpaceProc(*bytes));
+	    if ((numBytes == 0) || ((numBytes == -1) && (*bytes == '\0'))) {
+		break;
+	    }
+	    /* (*bytes) is non-space; return to counting state */
+	}
+	bytes++;
+	numBytes -= (numBytes != -1);
+    }
+
+    /* No list element following trailing white space */
+    count -= TclIsSpaceProc(bytes[-1]); 
+
+    done:
+    if (endPtr) {
+	*endPtr = bytes;
+    }
+    return count;
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * TclFindElement --
  *
- *	Given a pointer into a Tcl list, locate the first (or next)
- *	element in the list.
+ *	Given a pointer into a Tcl list, locate the first (or next) element in
+ *	the list.
  *
  * Results:
- *	The return value is normally TCL_OK, which means that the
- *	element was successfully located.  If TCL_ERROR is returned
- *	it means that list didn't have proper list structure;
- *	the interp's result contains a more detailed error message.
+ *	The return value is normally TCL_OK, which means that the element was
+ *	successfully located. If TCL_ERROR is returned it means that list
+ *	didn't have proper list structure; the interp's result contains a more
+ *	detailed error message.
  *
  *	If TCL_OK is returned, then *elementPtr will be set to point to the
  *	first element of list, and *nextPtr will be set to point to the
  *	character just after any white space following the last character
- *	that's part of the element. If this is the last argument in the
- *	list, then *nextPtr will point just after the last character in the
- *	list (i.e., at the character at list+listLength). If sizePtr is
- *	non-NULL, *sizePtr is filled in with the number of characters in the
- *	element.  If the element is in braces, then *elementPtr will point
- *	to the character after the opening brace and *sizePtr will not
- *	include either of the braces. If there isn't an element in the list,
- *	*sizePtr will be zero, and both *elementPtr and *termPtr will point
- *	just after the last character in the list. Note: this procedure does
- *	NOT collapse backslash sequences.
+ *	that's part of the element. If this is the last argument in the list,
+ *	then *nextPtr will point just after the last character in the list
+ *	(i.e., at the character at list+listLength). If sizePtr is non-NULL,
+ *	*sizePtr is filled in with the number of bytes in the element. If
+ *	the element is in braces, then *elementPtr will point to the character
+ *	after the opening brace and *sizePtr will not include either of the
+ *	braces. If there isn't an element in the list, *sizePtr will be zero,
+ *	and both *elementPtr and *nextPtr will point just after the last
+ *	character in the list. If literalPtr is non-NULL, *literalPtr is set
+ *	to a boolean value indicating whether the substring returned as
+ *	the values of **elementPtr and *sizePtr is the literal value of
+ *	a list element.  If not, a call to TclCopyAndCollapse() is needed
+ *	to produce the actual value of the list element.  Note: this function
+ *	does NOT collapse backslash sequences, but uses *literalPtr to tell
+ * 	callers when it is required for them to do so.
  *
  * Side effects:
  *	None.
@@ -121,25 +469,27 @@ Tcl_ObjType tclEndOffsetType = {
  */
 
 int
-TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
-	       bracePtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. 
-				 * If NULL, then no error message is left
-				 * after errors. */
-    CONST char *list;		/* Points to the first byte of a string
+TclFindElement(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. If
+				 * NULL, then no error message is left after
+				 * errors. */
+    CONST char *list,		/* Points to the first byte of a string
 				 * containing a Tcl list with zero or more
 				 * elements (possibly in braces). */
-    int listLength;		/* Number of bytes in the list's string. */
-    CONST char **elementPtr;	/* Where to put address of first significant
+    int listLength,		/* Number of bytes in the list's string. */
+    CONST char **elementPtr,	/* Where to put address of first significant
 				 * character in first element of list. */
-    CONST char **nextPtr;	/* Fill in with location of character just
+    CONST char **nextPtr,	/* Fill in with location of character just
 				 * after all white space following end of
 				 * argument (next arg or end of list). */
-    int *sizePtr;		/* If non-zero, fill in with size of
+    int *sizePtr,		/* If non-zero, fill in with size of
 				 * element. */
-    int *bracePtr;		/* If non-zero, fill in with non-zero/zero
-				 * to indicate that arg was/wasn't
-				 * in braces. */
+    int *literalPtr)		/* If non-zero, fill in with non-zero/zero to
+				 * indicate that the substring of *sizePtr
+				 * bytes starting at **elementPtr is/is not
+				 * the literal list element and therefore
+				 * does not/does require a call to 
+				 * TclCopyAndCollapse() by the caller. */
 {
     CONST char *p = list;
     CONST char *elemStart;	/* Points to first byte of first element. */
@@ -148,16 +498,17 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
     int inQuotes = 0;
     int size = 0;		/* lint. */
     int numChars;
+    int literal = 1;
     CONST char *p2;
-    
+
     /*
-     * Skim off leading white space and check for an opening brace or
-     * quote. We treat embedded NULLs in the list as bytes belonging to
-     * a list element.
+     * Skim off leading white space and check for an opening brace or quote.
+     * We treat embedded NULLs in the list as bytes belonging to a list
+     * element.
      */
 
     limit = (list + listLength);
-    while ((p < limit) && (isspace(UCHAR(*p)))) { /* INTL: ISO space. */
+    while ((p < limit) && (TclIsSpaceProc(*p))) {
 	p++;
     }
     if (p == limit) {		/* no element found */
@@ -173,9 +524,6 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
 	p++;
     }
     elemStart = p;
-    if (bracePtr != 0) {
-	*bracePtr = openBraces;
-    }
 
     /*
      * Find element's end (a space, close brace, or the end of the string).
@@ -183,123 +531,119 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
 
     while (p < limit) {
 	switch (*p) {
-
 	    /*
 	     * Open brace: don't treat specially unless the element is in
 	     * braces. In this case, keep a nesting count.
 	     */
 
-	    case '{':
-		if (openBraces != 0) {
-		    openBraces++;
-		}
-		break;
+	case '{':
+	    if (openBraces != 0) {
+		openBraces++;
+	    }
+	    break;
 
 	    /*
 	     * Close brace: if element is in braces, keep nesting count and
 	     * quit when the last close brace is seen.
 	     */
 
-	    case '}':
-		if (openBraces > 1) {
-		    openBraces--;
-		} else if (openBraces == 1) {
-		    size = (p - elemStart);
-		    p++;
-		    if ((p >= limit)
-			    || isspace(UCHAR(*p))) { /* INTL: ISO space. */
-			goto done;
-		    }
+	case '}':
+	    if (openBraces > 1) {
+		openBraces--;
+	    } else if (openBraces == 1) {
+		size = (p - elemStart);
+		p++;
+		if ((p >= limit) || TclIsSpaceProc(*p)) {
+		    goto done;
+		}
 
-		    /*
-		     * Garbage after the closing brace; return an error.
-		     */
-		    
-		    if (interp != NULL) {
-			char buf[100];
-			
-			p2 = p;
-			while ((p2 < limit)
-				&& (!isspace(UCHAR(*p2))) /* INTL: ISO space. */
-			        && (p2 < p+20)) {
-			    p2++;
-			}
-			sprintf(buf,
-				"list element in braces followed by \"%.*s\" instead of space",
-				(int) (p2-p), p);
-			Tcl_SetResult(interp, buf, TCL_VOLATILE);
+		/*
+		 * Garbage after the closing brace; return an error.
+		 */
+
+		if (interp != NULL) {
+		    p2 = p;
+		    while ((p2 < limit) && (!TclIsSpaceProc(*p2))
+			    && (p2 < p+20)) {
+			p2++;
 		    }
-		    return TCL_ERROR;
+		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			    "list element in braces followed by \"%.*s\" "
+			    "instead of space", (int) (p2-p), p));
 		}
-		break;
+		return TCL_ERROR;
+	    }
+	    break;
 
 	    /*
-	     * Backslash:  skip over everything up to the end of the
-	     * backslash sequence.
+	     * Backslash: skip over everything up to the end of the backslash
+	     * sequence.
 	     */
 
-	    case '\\': {
-		TclParseBackslash(p, limit - p, &numChars, NULL);
-		p += (numChars - 1);
-		break;
+	case '\\':
+	    if (openBraces == 0) {
+		/*
+		 * A backslash sequence not within a brace quoted element
+		 * means the value of the element is different from the
+		 * substring we are parsing.  A call to TclCopyAndCollapse()
+		 * is needed to produce the element value.  Inform the caller.
+		 */
+		literal = 0;
 	    }
+	    TclParseBackslash(p, limit - p, &numChars, NULL);
+	    p += (numChars - 1);
+	    break;
 
 	    /*
 	     * Space: ignore if element is in braces or quotes; otherwise
 	     * terminate element.
 	     */
 
-	    case ' ':
-	    case '\f':
-	    case '\n':
-	    case '\r':
-	    case '\t':
-	    case '\v':
-		if ((openBraces == 0) && !inQuotes) {
-		    size = (p - elemStart);
-		    goto done;
-		}
-		break;
+	case ' ':
+	case '\f':
+	case '\n':
+	case '\r':
+	case '\t':
+	case '\v':
+	    if ((openBraces == 0) && !inQuotes) {
+		size = (p - elemStart);
+		goto done;
+	    }
+	    break;
 
 	    /*
 	     * Double-quote: if element is in quotes then terminate it.
 	     */
 
-	    case '"':
-		if (inQuotes) {
-		    size = (p - elemStart);
-		    p++;
-		    if ((p >= limit)
-			    || isspace(UCHAR(*p))) { /* INTL: ISO space */
-			goto done;
-		    }
+	case '"':
+	    if (inQuotes) {
+		size = (p - elemStart);
+		p++;
+		if ((p >= limit) || TclIsSpaceProc(*p)) {
+		    goto done;
+		}
 
-		    /*
-		     * Garbage after the closing quote; return an error.
-		     */
-		    
-		    if (interp != NULL) {
-			char buf[100];
-			
-			p2 = p;
-			while ((p2 < limit)
-				&& (!isspace(UCHAR(*p2))) /* INTL: ISO space */
-				 && (p2 < p+20)) {
-			    p2++;
-			}
-			sprintf(buf,
-				"list element in quotes followed by \"%.*s\" %s",
-				(int) (p2-p), p, "instead of space");
-			Tcl_SetResult(interp, buf, TCL_VOLATILE);
+		/*
+		 * Garbage after the closing quote; return an error.
+		 */
+
+		if (interp != NULL) {
+		    p2 = p;
+		    while ((p2 < limit) && (!TclIsSpaceProc(*p2))
+			    && (p2 < p+20)) {
+			p2++;
 		    }
-		    return TCL_ERROR;
+		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			    "list element in quotes followed by \"%.*s\" "
+			    "instead of space", (int) (p2-p), p));
 		}
-		break;
+		return TCL_ERROR;
+	    }
+	    break;
 	}
 	p++;
     }
 
-
     /*
      * End of list: terminate element.
      */
@@ -321,8 +665,8 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
 	size = (p - elemStart);
     }
 
-    done:
-    while ((p < limit) && (isspace(UCHAR(*p)))) { /* INTL: ISO space. */
+  done:
+    while ((p < limit) && (TclIsSpaceProc(*p))) {
 	p++;
     }
     *elementPtr = elemStart;
@@ -330,6 +674,9 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
     if (sizePtr != 0) {
 	*sizePtr = size;
     }
+    if (literalPtr != 0) {
+	*literalPtr = literal;
+    }
     return TCL_OK;
 }
 
@@ -338,7 +685,7 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
  *
  * TclCopyAndCollapse --
  *
- *	Copy a string and eliminate any backslashes that aren't in braces.
+ *	Copy a string and substitute all backslash escape sequences
  *
  * Results:
  *	Count bytes get copied from src to dst. Along the way, backslash
@@ -353,10 +700,10 @@ TclFindElement(interp, list, listLength, elementPtr, nextPtr, sizePtr,
  */
 
 int
-TclCopyAndCollapse(count, src, dst)
-    int count;			/* Number of bytes to copy from src. */
-    CONST char *src;		/* Copy from here... */
-    char *dst;			/* ... to here. */
+TclCopyAndCollapse(
+    int count,			/* Number of byte to copy from src. */
+    CONST char *src,		/* Copy from here... */
+    char *dst)			/* ... to here. */
 {
     int newCount = 0;
 
@@ -390,21 +737,19 @@ TclCopyAndCollapse(count, src, dst)
  *	Splits a list up into its constituent fields.
  *
  * Results
- *	The return value is normally TCL_OK, which means that
- *	the list was successfully split up.  If TCL_ERROR is
- *	returned, it means that "list" didn't have proper list
- *	structure;  the interp's result will contain a more detailed
- *	error message.
- *
- *	*argvPtr will be filled in with the address of an array
- *	whose elements point to the elements of list, in order.
- *	*argcPtr will get filled in with the number of valid elements
- *	in the array.  A single block of memory is dynamically allocated
- *	to hold both the argv array and a copy of the list (with
- *	backslashes and braces removed in the standard way).
- *	The caller must eventually free this memory by calling free()
- *	on *argvPtr.  Note:  *argvPtr and *argcPtr are only modified
- *	if the procedure returns normally.
+ *	The return value is normally TCL_OK, which means that the list was
+ *	successfully split up. If TCL_ERROR is returned, it means that "list"
+ *	didn't have proper list structure; the interp's result will contain a
+ *	more detailed error message.
+ *
+ *	*argvPtr will be filled in with the address of an array whose elements
+ *	point to the elements of list, in order. *argcPtr will get filled in
+ *	with the number of valid elements in the array. A single block of
+ *	memory is dynamically allocated to hold both the argv array and a copy
+ *	of the list (with backslashes and braces removed in the standard way).
+ *	The caller must eventually free this memory by calling free() on
+ *	*argvPtr. Note: *argvPtr and *argcPtr are only modified if the
+ *	function returns normally.
  *
  * Side effects:
  *	Memory is allocated.
@@ -413,54 +758,40 @@ TclCopyAndCollapse(count, src, dst)
  */
 
 int
-Tcl_SplitList(interp, list, argcPtr, argvPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. 
-				 * If NULL, no error message is left. */
-    CONST char *list;		/* Pointer to string with list structure. */
-    int *argcPtr;		/* Pointer to location to fill in with
-				 * the number of elements in the list. */
-    CONST char ***argvPtr;	/* Pointer to place to store pointer to
-				 * array of pointers to list elements. */
+Tcl_SplitList(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. If
+				 * NULL, no error message is left. */
+    CONST char *list,		/* Pointer to string with list structure. */
+    int *argcPtr,		/* Pointer to location to fill in with the
+				 * number of elements in the list. */
+    CONST char ***argvPtr)	/* Pointer to place to store pointer to array
+				 * of pointers to list elements. */
 {
-    CONST char **argv;
-    CONST char *l;
+    CONST char **argv, *end, *element;
     char *p;
-    int length, size, i, result, elSize, brace;
-    CONST char *element;
+    int length, size, i, result, elSize;
 
     /*
-     * Figure out how much space to allocate.  There must be enough
-     * space for both the array of pointers and also for a copy of
-     * the list.  To estimate the number of pointers needed, count
-     * the number of space characters in the list.
+     * Allocate enough space to work in. A (CONST char *) for each
+     * (possible) list element plus one more for terminating NULL,
+     * plus as many bytes as in the original string value, plus one
+     * more for a terminating '\0'.  Space used to hold element separating
+     * white space in the original string gets re-purposed to hold '\0'
+     * characters in the argv array.
      */
 
-    for (size = 2, l = list; *l != 0; l++) {
-	if (isspace(UCHAR(*l))) { /* INTL: ISO space. */
-	    size++;
-	    /* Consecutive space can only count as a single list delimiter */
-	    while (1) {
-		char next = *(l + 1);
-		if (next == '\0') {
-		    break;
-		}
-		++l;
-		if (isspace(UCHAR(next))) {
-		    continue;
-		}
-		break;
-	    }
-	}
-    }
-    length = l - list;
+    size = TclMaxListLength(list, -1, &end) + 1;
+    length = end - list;
     argv = (CONST char **) ckalloc((unsigned)
 	    ((size * sizeof(char *)) + length + 1));
+
     for (i = 0, p = ((char *) argv) + size*sizeof(char *);
 	    *list != 0;  i++) {
 	CONST char *prevList = list;
-	
-	result = TclFindElement(interp, list, length, &element,
-				&list, &elSize, &brace);
+	int literal;
+
+	result = TclFindElement(interp, list, length, &element, &list,
+		&elSize, &literal);
 	length -= (list - prevList);
 	if (result != TCL_OK) {
 	    ckfree((char *) argv);
@@ -478,14 +809,13 @@ Tcl_SplitList(interp, list, argcPtr, argvPtr)
 	    return TCL_ERROR;
 	}
 	argv[i] = p;
-	if (brace) {
-	    memcpy((VOID *) p, (VOID *) element, (size_t) elSize);
+	if (literal) {
+	    memcpy(p, element, (size_t) elSize);
 	    p += elSize;
 	    *p = 0;
 	    p++;
 	} else {
-	    TclCopyAndCollapse(elSize, element, p);
-	    p += elSize+1;
+	    p += 1 + TclCopyAndCollapse(elSize, element, p);
 	}
     }
 
@@ -500,17 +830,15 @@ Tcl_SplitList(interp, list, argcPtr, argvPtr)
  *
  * Tcl_ScanElement --
  *
- *	This procedure is a companion procedure to Tcl_ConvertElement.
- *	It scans a string to see what needs to be done to it (e.g. add
- *	backslashes or enclosing braces) to make the string into a
- *	valid Tcl list element.
+ *	This function is a companion function to Tcl_ConvertElement. It scans
+ *	a string to see what needs to be done to it (e.g. add backslashes or
+ *	enclosing braces) to make the string into a valid Tcl list element.
  *
  * Results:
- *	The return value is an overestimate of the number of characters
- *	that will be needed by Tcl_ConvertElement to produce a valid
- *	list element from string.  The word at *flagPtr is filled in
- *	with a value needed by Tcl_ConvertElement when doing the actual
- *	conversion.
+ *	The return value is an overestimate of the number of bytes that
+ *	will be needed by Tcl_ConvertElement to produce a valid list element
+ *	from src. The word at *flagPtr is filled in with a value needed by
+ *	Tcl_ConvertElement when doing the actual conversion.
  *
  * Side effects:
  *	None.
@@ -519,12 +847,12 @@ Tcl_SplitList(interp, list, argcPtr, argvPtr)
  */
 
 int
-Tcl_ScanElement(string, flagPtr)
-    register CONST char *string; /* String to convert to list element. */
-    register int *flagPtr;	 /* Where to store information to guide
-				  * Tcl_ConvertCountedElement. */
+Tcl_ScanElement(
+    register CONST char *src,	/* String to convert to list element. */
+    register int *flagPtr)	/* Where to store information to guide
+				 * Tcl_ConvertCountedElement. */
 {
-    return Tcl_ScanCountedElement(string, -1, flagPtr);
+    return Tcl_ScanCountedElement(src, -1, flagPtr);
 }
 
 /*
@@ -532,19 +860,17 @@ Tcl_ScanElement(string, flagPtr)
  *
  * Tcl_ScanCountedElement --
  *
- *	This procedure is a companion procedure to
- *	Tcl_ConvertCountedElement.  It scans a string to see what
- *	needs to be done to it (e.g. add backslashes or enclosing
- *	braces) to make the string into a valid Tcl list element.
- *	If length is -1, then the string is scanned up to the first
- *	null byte.
+ *	This function is a companion function to Tcl_ConvertCountedElement. It
+ *	scans a string to see what needs to be done to it (e.g. add
+ *	backslashes or enclosing braces) to make the string into a valid Tcl
+ *	list element. If length is -1, then the string is scanned from src up
+ *	to the first null byte.
  *
  * Results:
- *	The return value is an overestimate of the number of characters
- *	that will be needed by Tcl_ConvertCountedElement to produce a
- *	valid list element from string.  The word at *flagPtr is
- *	filled in with a value needed by Tcl_ConvertCountedElement
- *	when doing the actual conversion.
+ *	The return value is an overestimate of the number of bytes that
+ *	will be needed by Tcl_ConvertCountedElement to produce a valid list
+ *	element from src. The word at *flagPtr is filled in with a value
+ *	needed by Tcl_ConvertCountedElement when doing the actual conversion.
  *
  * Side effects:
  *	None.
@@ -553,115 +879,266 @@ Tcl_ScanElement(string, flagPtr)
  */
 
 int
-Tcl_ScanCountedElement(string, length, flagPtr)
-    CONST char *string;		/* String to convert to Tcl list element. */
-    int length;			/* Number of bytes in string, or -1. */
-    int *flagPtr;		/* Where to store information to guide
+Tcl_ScanCountedElement(
+    CONST char *src,		/* String to convert to Tcl list element. */
+    int length,			/* Number of bytes in src, or -1. */
+    int *flagPtr)		/* Where to store information to guide
 				 * Tcl_ConvertElement. */
 {
-    int flags, nestingLevel;
-    register CONST char *p, *lastChar;
+    int flags = CONVERT_ANY;
+    int numBytes = TclScanElement(src, length, &flags);
 
-    /*
-     * This procedure and Tcl_ConvertElement together do two things:
-     *
-     * 1. They produce a proper list, one that will yield back the
-     * argument strings when evaluated or when disassembled with
-     * Tcl_SplitList.  This is the most important thing.
-     * 
-     * 2. They try to produce legible output, which means minimizing the
-     * use of backslashes (using braces instead).  However, there are
-     * some situations where backslashes must be used (e.g. an element
-     * like "{abc": the leading brace will have to be backslashed.
-     * For each element, one of three things must be done:
-     *
-     * (a) Use the element as-is (it doesn't contain any special
-     * characters).  This is the most desirable option.
-     *
-     * (b) Enclose the element in braces, but leave the contents alone.
-     * This happens if the element contains embedded space, or if it
-     * contains characters with special interpretation ($, [, ;, or \),
-     * or if it starts with a brace or double-quote, or if there are
-     * no characters in the element.
-     *
-     * (c) Don't enclose the element in braces, but add backslashes to
-     * prevent special interpretation of special characters.  This is a
-     * last resort used when the argument would normally fall under case
-     * (b) but contains unmatched braces.  It also occurs if the last
-     * character of the argument is a backslash or if the element contains
-     * a backslash followed by newline.
-     *
-     * The procedure figures out how many bytes will be needed to store
-     * the result (actually, it overestimates). It also collects information
-     * about the element in the form of a flags word.
-     *
-     * Note: list elements produced by this procedure and
-     * Tcl_ConvertCountedElement must have the property that they can be
-     * enclosing in curly braces to make sub-lists.  This means, for
-     * example, that we must not leave unmatched curly braces in the
-     * resulting list element.  This property is necessary in order for
-     * procedures like Tcl_DStringStartSublist to work.
-     */
+    *flagPtr = flags;
+    return numBytes;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclScanElement --
+ *
+ *	This function is a companion function to TclConvertElement. It
+ *	scans a string to see what needs to be done to it (e.g. add
+ *	backslashes or enclosing braces) to make the string into a valid Tcl
+ *	list element. If length is -1, then the string is scanned from src up
+ *	to the first null byte.  A NULL value for src is treated as an
+ *	empty string.  The incoming value of *flagPtr is a report from the
+ *	caller what additional flags it will pass to TclConvertElement().
+ *
+ * Results:
+ *	The recommended formatting mode for the element is determined and
+ *	a value is written to *flagPtr indicating that recommendation.  This
+ *	recommendation is combined with the incoming flag values in *flagPtr
+ *	set by the caller to determine how many bytes will be needed by
+ *	TclConvertElement() in which to write the formatted element following
+ *	the recommendation modified by the flag values.  This number of bytes
+ *	is the return value of the routine.  In some situations it may be
+ *	an overestimate, but so long as the caller passes the same flags
+ *	to TclConvertElement(), it will be large enough.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    nestingLevel = 0;
-    flags = 0;
-    if (string == NULL) {
-	string = "";
-    }
-    if (length == -1) {
-	length = strlen(string);
+int
+TclScanElement(
+    CONST char *src,		/* String to convert to Tcl list element. */
+    int length,			/* Number of bytes in src, or -1. */
+    int *flagPtr)		/* Where to store information to guide
+				 * Tcl_ConvertElement. */
+{
+    CONST char *p = src;
+    int nestingLevel = 0;	/* Brace nesting count */
+    int forbidNone = 0;		/* Do not permit CONVERT_NONE mode. Something
+				   needs protection or escape. */
+    int requireEscape = 0;	/* Force use of CONVERT_ESCAPE mode.  For some
+				 * reason bare or brace-quoted form fails. */
+    int extra = 0;		/* Count of number of extra bytes needed for
+				 * formatted element, assuming we use escape
+				 * sequences in formatting. */
+    int bytesNeeded;		/* Buffer length computed to complete the
+				 * element formatting in the selected mode. */
+#if COMPAT
+    int preferEscape = 0;	/* Use preferences to track whether to use */
+    int preferBrace = 0;	/* CONVERT_MASK mode. */
+    int braceCount = 0;		/* Count of all braces '{' '}' seen. */
+#endif
+    
+    if ((p == NULL) || (length == 0) || ((*p == '\0') && (length == -1))) {
+	/* Empty string element must be brace quoted. */
+	*flagPtr = CONVERT_BRACE;
+	return 2;
     }
-    lastChar = string + length;
-    p = string;
-    if ((p == lastChar) || (*p == '{') || (*p == '"')) {
-	flags |= USE_BRACES;
+
+    if ((*p == '{') || (*p == '"')) {
+	/*
+	 * Must escape or protect so leading character of value is not
+	 * misinterpreted as list element delimiting syntax.
+	 */
+	forbidNone = 1;
+#if COMPAT
+	preferBrace = 1;
+#endif
     }
-    for ( ; p < lastChar; p++) {
+
+    while (length) {
 	switch (*p) {
-	    case '{':
-		nestingLevel++;
-		break;
-	    case '}':
-		nestingLevel--;
-		if (nestingLevel < 0) {
-		    flags |= TCL_DONT_USE_BRACES|BRACES_UNMATCHED;
-		}
-		break;
-	    case '[':
-	    case '$':
-	    case ';':
-	    case ' ':
-	    case '\f':
-	    case '\n':
-	    case '\r':
-	    case '\t':
-	    case '\v':
-		flags |= USE_BRACES;
+	case '{':
+#if COMPAT
+	    braceCount++;
+#endif
+	    extra++;				/* Escape '{' => '\{' */
+	    nestingLevel++;
+	    break;
+	case '}':
+#if COMPAT
+	    braceCount++;
+#endif
+	    extra++;				/* Escape '}' => '\}' */
+	    nestingLevel--;
+	    if (nestingLevel < 0) {
+		/* Unbalanced braces!  Cannot format with brace quoting. */
+		requireEscape = 1;
+	    }
+	    break;
+	case ']':
+	case '"':
+#if COMPAT
+	    forbidNone = 1;
+	    extra++;		/* Escapes all just prepend a backslash */
+	    preferEscape = 1;
+	    break;
+#else
+	    /* FLOW THROUGH */
+#endif
+	case '[':
+	case '$':
+	case ';':
+	case ' ':
+	case '\f':
+	case '\n':
+	case '\r':
+	case '\t':
+	case '\v':
+	    forbidNone = 1;
+	    extra++;		/* Escape sequences all one byte longer. */
+#if COMPAT
+	    preferBrace = 1;
+#endif
+	    break;
+	case '\\':
+	    extra++;				/* Escape '\' => '\\' */
+	    if ((length == 1) || ((length == -1) && (p[1] == '\0'))) {
+		/* Final backslash. Cannot format with brace quoting. */
+		requireEscape = 1;		
 		break;
-	    case '\\':
-		if ((p+1 == lastChar) || (p[1] == '\n')) {
-		    flags = TCL_DONT_USE_BRACES | BRACES_UNMATCHED;
-		} else {
-		    int size;
-
-		    TclParseBackslash(p, lastChar - p, &size, NULL);
-		    p += size-1;
-		    flags |= USE_BRACES;
-		}
+	    }
+	    if (p[1] == '\n') {
+		extra++;	/* Escape newline => '\n', one byte longer */
+		/* Backslash newline sequence.  Brace quoting not permitted. */
+		requireEscape = 1;
+		length -= (length > 0);
+		p++;
 		break;
+	    }
+	    if ((p[1] == '{') || (p[1] == '}') || (p[1] == '\\')) {
+		extra++;	/* Escape sequences all one byte longer. */
+		length -= (length > 0);
+		p++;
+	    }
+	    forbidNone = 1;
+#if COMPAT
+	    preferBrace = 1;
+#endif
+	    break;
+	case '\0':
+	    if (length == -1) {
+		goto endOfString;
+	    }
+	    /* TODO: Panic on improper encoding? */
+	    break;
 	}
+	length -= (length > 0);
+	p++;
     }
+
+    endOfString:
     if (nestingLevel != 0) {
-	flags = TCL_DONT_USE_BRACES | BRACES_UNMATCHED;
+	/* Unbalanced braces!  Cannot format with brace quoting. */
+	requireEscape = 1;
     }
-    *flagPtr = flags;
 
-    /*
-     * Allow enough space to backslash every character plus leave
-     * two spaces for braces.
-     */
+    /* We need at least as many bytes as are in the element value... */
+    bytesNeeded = p - src;
 
-    return 2*(p-string) + 2;
+    if (requireEscape) {
+	/*
+	 * We must use escape sequences.  Add all the extra bytes needed
+	 * to have room to create them.
+	 */
+	bytesNeeded += extra;
+	/* Make room to escape leading #, if needed. */
+	if ((*src == '#') && !(*flagPtr & TCL_DONT_QUOTE_HASH)) {
+	    bytesNeeded++;
+	}
+	*flagPtr = CONVERT_ESCAPE;
+	goto overflowCheck;
+    }
+    if (*flagPtr & CONVERT_ANY) {
+	/*
+	 * The caller has not let us know what flags it will pass to
+	 * TclConvertElement() so compute the max size we might need for
+	 * any possible choice.  Normally the formatting using escape
+	 * sequences is the longer one, and a minimum "extra" value of 2
+	 * makes sure we don't request too small a buffer in those edge
+	 * cases where that's not true.
+	 */
+	if (extra < 2) {
+	    extra = 2;
+	}
+	*flagPtr &= ~CONVERT_ANY;
+	*flagPtr |= TCL_DONT_USE_BRACES;
+    }
+    if (forbidNone) {
+	/* We must request some form of quoting of escaping... */
+#if COMPAT
+	if (preferEscape && !preferBrace) {
+	    /*
+	     * If we are quoting solely due to ] or internal " characters
+	     * use the CONVERT_MASK mode where we escape all special 
+	     * characters except for braces.  "extra" counted space needed
+	     * to escape braces too, so substract "braceCount" to get our
+	     * actual needs.
+	     */
+	    bytesNeeded += (extra - braceCount);
+	    /* Make room to escape leading #, if needed. */
+	    if ((*src == '#') && !(*flagPtr & TCL_DONT_QUOTE_HASH)) {
+		bytesNeeded++;
+	    }
+	    /*
+	     * If the caller reports it will direct TclConvertElement() to
+	     * use full escapes on the element, add back the bytes needed to
+	     * escape the braces.
+	     */
+	    if (*flagPtr & TCL_DONT_USE_BRACES) {
+		bytesNeeded += braceCount;
+	    }
+	    *flagPtr = CONVERT_MASK;
+	    goto overflowCheck;
+	}
+#endif
+	if (*flagPtr & TCL_DONT_USE_BRACES) {
+	    /*
+	     * If the caller reports it will direct TclConvertElement() to
+	     * use escapes, add the extra bytes needed to have room for them.
+	     */
+	    bytesNeeded += extra;
+	    /* Make room to escape leading #, if needed. */
+	    if ((*src == '#') && !(*flagPtr & TCL_DONT_QUOTE_HASH)) {
+		bytesNeeded++;
+	    }
+	} else {
+	    /* Add 2 bytes for room for the enclosing braces. */
+	    bytesNeeded += 2;
+	}
+	*flagPtr = CONVERT_BRACE;
+	goto overflowCheck;
+    }
+
+    /* So far, no need to quote or escape anything. */
+    if ((*src == '#') && !(*flagPtr & TCL_DONT_QUOTE_HASH)) {
+	/* If we need to quote a leading #, make room to enclose in braces. */
+	bytesNeeded += 2;
+    }
+    *flagPtr = CONVERT_NONE;
+
+    overflowCheck:
+    if (bytesNeeded < 0) {
+	Tcl_Panic("TclScanElement: string length overflow");
+    }
+    return bytesNeeded;
 }
 
 /*
@@ -669,16 +1146,15 @@ Tcl_ScanCountedElement(string, length, flagPtr)
  *
  * Tcl_ConvertElement --
  *
- *	This is a companion procedure to Tcl_ScanElement.  Given
- *	the information produced by Tcl_ScanElement, this procedure
- *	converts a string to a list element equal to that string.
+ *	This is a companion function to Tcl_ScanElement. Given the information
+ *	produced by Tcl_ScanElement, this function converts a string to a list
+ *	element equal to that string.
  *
  * Results:
- *	Information is copied to *dst in the form of a list element
- *	identical to src (i.e. if Tcl_SplitList is applied to dst it
- *	will produce a string identical to src).  The return value is
- *	a count of the number of characters copied (not including the
- *	terminating NULL character).
+ *	Information is copied to *dst in the form of a list element identical
+ *	to src (i.e. if Tcl_SplitList is applied to dst it will produce a
+ *	string identical to src). The return value is a count of the number of
+ *	characters copied (not including the terminating NULL character).
  *
  * Side effects:
  *	None.
@@ -687,10 +1163,10 @@ Tcl_ScanCountedElement(string, length, flagPtr)
  */
 
 int
-Tcl_ConvertElement(src, dst, flags)
-    register CONST char *src;	/* Source information for list element. */
-    register char *dst;		/* Place to put list-ified element. */
-    register int flags;		/* Flags produced by Tcl_ScanElement. */
+Tcl_ConvertElement(
+    register CONST char *src,	/* Source information for list element. */
+    register char *dst,		/* Place to put list-ified element. */
+    register int flags)		/* Flags produced by Tcl_ScanElement. */
 {
     return Tcl_ConvertCountedElement(src, -1, dst, flags);
 }
@@ -700,17 +1176,15 @@ Tcl_ConvertElement(src, dst, flags)
  *
  * Tcl_ConvertCountedElement --
  *
- *	This is a companion procedure to Tcl_ScanCountedElement.  Given
- *	the information produced by Tcl_ScanCountedElement, this
- *	procedure converts a string to a list element equal to that
- *	string.
+ *	This is a companion function to Tcl_ScanCountedElement. Given the
+ *	information produced by Tcl_ScanCountedElement, this function converts
+ *	a string to a list element equal to that string.
  *
  * Results:
- *	Information is copied to *dst in the form of a list element
- *	identical to src (i.e. if Tcl_SplitList is applied to dst it
- *	will produce a string identical to src).  The return value is
- *	a count of the number of characters copied (not including the
- *	terminating NULL character).
+ *	Information is copied to *dst in the form of a list element identical
+ *	to src (i.e. if Tcl_SplitList is applied to dst it will produce a
+ *	string identical to src). The return value is a count of the number of
+ *	characters copied (not including the terminating NULL character).
  *
  * Side effects:
  *	None.
@@ -719,118 +1193,177 @@ Tcl_ConvertElement(src, dst, flags)
  */
 
 int
-Tcl_ConvertCountedElement(src, length, dst, flags)
-    register CONST char *src;	/* Source information for list element. */
-    int length;			/* Number of bytes in src, or -1. */
-    char *dst;			/* Place to put list-ified element. */
-    int flags;			/* Flags produced by Tcl_ScanElement. */
+Tcl_ConvertCountedElement(
+    register CONST char *src,	/* Source information for list element. */
+    int length,			/* Number of bytes in src, or -1. */
+    char *dst,			/* Place to put list-ified element. */
+    int flags)			/* Flags produced by Tcl_ScanElement. */
 {
-    register char *p = dst;
-    register CONST char *lastChar;
+    int numBytes = TclConvertElement(src, length, dst, flags);
+    dst[numBytes] = '\0';
+    return numBytes;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclConvertElement --
+ *
+ *	This is a companion function to TclScanElement. Given the
+ *	information produced by TclScanElement, this function converts
+ *	a string to a list element equal to that string.
+ *
+ * Results:
+ *	Information is copied to *dst in the form of a list element identical
+ *	to src (i.e. if Tcl_SplitList is applied to dst it will produce a
+ *	string identical to src). The return value is a count of the number of
+ *	characters copied (not including the terminating NULL character).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
 
-    /*
-     * See the comment block at the beginning of the Tcl_ScanElement
-     * code for details of how this works.
-     */
+int TclConvertElement(
+    register CONST char *src,	/* Source information for list element. */
+    int length,			/* Number of bytes in src, or -1. */
+    char *dst,			/* Place to put list-ified element. */
+    int flags)			/* Flags produced by Tcl_ScanElement. */
+{
+    int conversion = flags & CONVERT_MASK;
+    char *p = dst;
 
-    if (src && length == -1) {
-	length = strlen(src);
+    /* Let the caller demand we use escape sequences rather than braces. */
+    if ((flags & TCL_DONT_USE_BRACES) && (conversion & CONVERT_BRACE)) {
+	conversion = CONVERT_ESCAPE;
     }
-    if ((src == NULL) || (length == 0)) {
-	p[0] = '{';
-	p[1] = '}';
-	p[2] = 0;
-	return 2;
+
+    /* No matter what the caller demands, empty string must be braced! */
+    if ((src == NULL) || (length == 0) || ((*src == '\0') && (length == -1))) {
+	src = tclEmptyStringRep;
+	length = 0;
+	conversion = CONVERT_BRACE;
+    }
+
+    /* Escape leading hash as needed and requested. */
+    if ((*src == '#') && !(flags & TCL_DONT_QUOTE_HASH)) {
+	if (conversion == CONVERT_ESCAPE) {
+	    p[0] = '\\';
+	    p[1] = '#';
+	    p += 2;
+	    src++;
+	    length -= (length > 0);
+	} else {
+	    conversion = CONVERT_BRACE;
+	}
     }
-    lastChar = src + length;
-    if ((flags & USE_BRACES) && !(flags & TCL_DONT_USE_BRACES)) {
+
+    /* No escape or quoting needed.  Copy the literal string value. */
+    if (conversion == CONVERT_NONE) {
+	if (length == -1) {
+	    /* TODO: INT_MAX overflow? */
+	    while (*src) {
+		*p++ = *src++;
+	    }
+	    return p - dst;
+	} else {
+	    memcpy(dst, src, length);
+	    return length;
+	}
+    }
+
+    /* Formatted string is original string enclosed in braces. */
+    if (conversion == CONVERT_BRACE) {
 	*p = '{';
 	p++;
-	for ( ; src != lastChar; src++, p++) {
-	    *p = *src;
+	if (length == -1) {
+	    /* TODO: INT_MAX overflow? */
+	    while (*src) {
+		*p++ = *src++;
+	    }
+	} else {
+	    memcpy(p, src, length);
+	    p += length;
 	}
 	*p = '}';
 	p++;
-    } else {
-	if (*src == '{') {
-	    /*
-	     * Can't have a leading brace unless the whole element is
-	     * enclosed in braces.  Add a backslash before the brace.
-	     * Furthermore, this may destroy the balance between open
-	     * and close braces, so set BRACES_UNMATCHED.
-	     */
+	return p - dst;
+    }
 
-	    p[0] = '\\';
-	    p[1] = '{';
-	    p += 2;
-	    src++;
-	    flags |= BRACES_UNMATCHED;
-	}
-	for (; src != lastChar; src++) {
-	    switch (*src) {
-		case ']':
-		case '[':
-		case '$':
-		case ';':
-		case ' ':
-		case '\\':
-		case '"':
-		    *p = '\\';
-		    p++;
-		    break;
-		case '{':
-		case '}':
-		    /*
-		     * It may not seem necessary to backslash braces, but
-		     * it is.  The reason for this is that the resulting
-		     * list element may actually be an element of a sub-list
-		     * enclosed in braces (e.g. if Tcl_DStringStartSublist
-		     * has been invoked), so there may be a brace mismatch
-		     * if the braces aren't backslashed.
-		     */
-
-		    if (flags & BRACES_UNMATCHED) {
-			*p = '\\';
-			p++;
-		    }
-		    break;
-		case '\f':
-		    *p = '\\';
-		    p++;
-		    *p = 'f';
-		    p++;
-		    continue;
-		case '\n':
-		    *p = '\\';
-		    p++;
-		    *p = 'n';
-		    p++;
-		    continue;
-		case '\r':
-		    *p = '\\';
-		    p++;
-		    *p = 'r';
-		    p++;
-		    continue;
-		case '\t':
-		    *p = '\\';
-		    p++;
-		    *p = 't';
-		    p++;
-		    continue;
-		case '\v':
-		    *p = '\\';
-		    p++;
-		    *p = 'v';
-		    p++;
-		    continue;
+    /* conversion == CONVERT_ESCAPE or CONVERT_MASK */
+
+    /* Formatted string is original string converted to escape sequences. */
+    for ( ; length; src++, length -= (length > 0)) {
+	switch (*src) {
+	case ']':
+	case '[':
+	case '$':
+	case ';':
+	case ' ':
+	case '\\':
+	case '"':
+	    *p = '\\';
+	    p++;
+	    break;
+	case '{':
+	case '}':
+#if COMPAT
+	    if (conversion == CONVERT_ESCAPE) {
+#endif
+		*p = '\\';
+		p++;
+#if COMPAT
 	    }
-	    *p = *src;
+#endif
+	    break;
+	case '\f':
+	    *p = '\\';
+	    p++;
+	    *p = 'f';
+	    p++;
+	    continue;
+	case '\n':
+	    *p = '\\';
+	    p++;
+	    *p = 'n';
+	    p++;
+	    continue;
+	case '\r':
+	    *p = '\\';
 	    p++;
+	    *p = 'r';
+	    p++;
+	    continue;
+	case '\t':
+	    *p = '\\';
+	    p++;
+	    *p = 't';
+	    p++;
+	    continue;
+	case '\v':
+	    *p = '\\';
+	    p++;
+	    *p = 'v';
+	    p++;
+	    continue;
+	case '\0':
+	    if (length == -1) {
+		return p - dst;
+	    }
+	    /* 
+	     * If we reach this point, there's an embedded NULL in the
+	     * string range being processed, which should not happen when
+	     * the encoding rules for Tcl strings are properly followed.
+	     * If the day ever comes when we stop tolerating such things,
+	     * this is where to put the Tcl_Panic().
+	     */
+	    break;
 	}
+	*p = *src;
+	p++;
     }
-    *p = '\0';
-    return p-dst;
+    return p - dst;
 }
 
 /*
@@ -838,15 +1371,14 @@ Tcl_ConvertCountedElement(src, length, dst, flags)
  *
  * Tcl_Merge --
  *
- *	Given a collection of strings, merge them together into a
- *	single string that has proper Tcl list structured (i.e.
- *	Tcl_SplitList may be used to retrieve strings equal to the
- *	original elements, and Tcl_Eval will parse the string back
- *	into its original elements).
+ *	Given a collection of strings, merge them together into a single
+ *	string that has proper Tcl list structured (i.e. Tcl_SplitList may be
+ *	used to retrieve strings equal to the original elements, and Tcl_Eval
+ *	will parse the string back into its original elements).
  *
  * Results:
- *	The return value is the address of a dynamically-allocated
- *	string containing the merged list.
+ *	The return value is the address of a dynamically-allocated string
+ *	containing the merged list.
  *
  * Side effects:
  *	None.
@@ -855,16 +1387,25 @@ Tcl_ConvertCountedElement(src, length, dst, flags)
  */
 
 char *
-Tcl_Merge(argc, argv)
-    int argc;			/* How many strings to merge. */
-    CONST char * CONST *argv;	/* Array of string values. */
+Tcl_Merge(
+    int argc,			/* How many strings to merge. */
+    CONST char * CONST *argv)	/* Array of string values. */
 {
 #   define LOCAL_SIZE 20
-    int localFlags[LOCAL_SIZE], *flagPtr;
-    int numChars;
-    char *result;
-    char *dst;
-    int i;
+    int localFlags[LOCAL_SIZE], *flagPtr = NULL;
+    int i, bytesNeeded = 0;
+    char *result, *dst;
+    const int maxFlags = UINT_MAX / sizeof(int);
+
+    if (argc == 0) {
+	/*
+	 * Handle empty list case first, so logic of the general case
+	 * can be simpler.
+	 */
+	result = ckalloc(1);
+	result[0] = '\0';
+	return result;
+    }
 
     /*
      * Pass 1: estimate space, gather flags.
@@ -872,31 +1413,48 @@ Tcl_Merge(argc, argv)
 
     if (argc <= LOCAL_SIZE) {
 	flagPtr = localFlags;
+    } else if (argc > maxFlags) {
+	/*
+	 * We cannot allocate a large enough flag array to format this
+	 * list in one pass.  We could imagine converting this routine
+	 * to a multi-pass implementation, but for sizeof(int) == 4, 
+	 * the limit is a max of 2^30 list elements and since each element
+	 * is at least one byte formatted, and requires one byte space
+	 * between it and the next one, that a minimum space requirement
+	 * of 2^31 bytes, which is already INT_MAX. If we tried to format
+	 * a list of > maxFlags elements, we're just going to overflow
+	 * the size limits on the formatted string anyway, so just issue
+	 * that same panic early.
+	 */
+	Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
     } else {
 	flagPtr = (int *) ckalloc((unsigned) argc*sizeof(int));
     }
-    numChars = 1;
     for (i = 0; i < argc; i++) {
-	numChars += Tcl_ScanElement(argv[i], &flagPtr[i]) + 1;
+	flagPtr[i] = ( i ? TCL_DONT_QUOTE_HASH : 0 );
+	bytesNeeded += TclScanElement(argv[i], -1, &flagPtr[i]);
+	if (bytesNeeded < 0) {
+	    Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
+	}
+    }
+    if (bytesNeeded > INT_MAX - argc + 1) {
+	Tcl_Panic("max size for a Tcl value (%d bytes) exceeded", INT_MAX);
     }
+    bytesNeeded += argc;
 
     /*
      * Pass two: copy into the result area.
      */
 
-    result = (char *) ckalloc((unsigned) numChars);
+    result = ckalloc((unsigned) bytesNeeded);
     dst = result;
     for (i = 0; i < argc; i++) {
-	numChars = Tcl_ConvertElement(argv[i], dst, flagPtr[i]);
-	dst += numChars;
+	flagPtr[i] |= ( i ? TCL_DONT_QUOTE_HASH : 0 );
+	dst += TclConvertElement(argv[i], -1, dst, flagPtr[i]);
 	*dst = ' ';
 	dst++;
     }
-    if (dst == result) {
-	*dst = 0;
-    } else {
-	dst[-1] = 0;
-    }
+    dst[-1] = 0;
 
     if (flagPtr != localFlags) {
 	ckfree((char *) flagPtr);
@@ -912,10 +1470,10 @@ Tcl_Merge(argc, argv)
  *	Figure out how to handle a backslash sequence.
  *
  * Results:
- *	The return value is the character that should be substituted
- *	in place of the backslash sequence that starts at src.  If
- *	readPtr isn't NULL then it is filled in with a count of the
- *	number of characters in the backslash sequence.
+ *	The return value is the character that should be substituted in place
+ *	of the backslash sequence that starts at src. If readPtr isn't NULL
+ *	then it is filled in with a count of the number of characters in the
+ *	backslash sequence.
  *
  * Side effects:
  *	None.
@@ -924,11 +1482,11 @@ Tcl_Merge(argc, argv)
  */
 
 char
-Tcl_Backslash(src, readPtr)
-    CONST char *src;		/* Points to the backslash character of
-				 * a backslash sequence. */
-    int *readPtr;		/* Fill in with number of characters read
-				 * from src, unless NULL. */
+Tcl_Backslash(
+    CONST char *src,		/* Points to the backslash character of a
+				 * backslash sequence. */
+    int *readPtr)		/* Fill in with number of characters read from
+				 * src, unless NULL. */
 {
     char buf[TCL_UTF_MAX];
     Tcl_UniChar ch;
@@ -941,73 +1499,228 @@ Tcl_Backslash(src, readPtr)
 /*
  *----------------------------------------------------------------------
  *
+ * TclTrimRight --
+ *	Takes two counted strings in the Tcl encoding which must both be
+ *	null terminated.  Conceptually trims from the right side of the
+ *	first string all characters found in the second string.
+ *
+ * Results:
+ *	The number of bytes to be removed from the end of the string.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclTrimRight(
+    const char *bytes,	/* String to be trimmed... */
+    int numBytes,	/* ...and its length in bytes */
+    const char *trim,	/* String of trim characters... */
+    int numTrim)	/* ...and its length in bytes */
+{
+    const char *p = bytes + numBytes;
+    int pInc;
+
+    if ((bytes[numBytes] != '\0') || (trim[numTrim] != '\0')) {
+	Tcl_Panic("TclTrimRight works only on null-terminated strings");
+    }
+
+    /* Empty strings -> nothing to do */
+    if ((numBytes == 0) || (numTrim == 0)) {
+	return 0;
+    }
+
+    /* Outer loop: iterate over string to be trimmed */
+    do {
+	Tcl_UniChar ch1;
+	const char *q = trim;
+	int bytesLeft = numTrim;
+
+	p = Tcl_UtfPrev(p, bytes);
+ 	pInc = TclUtfToUniChar(p, &ch1);
+
+	/* Inner loop: scan trim string for match to current character */
+	do {
+	    Tcl_UniChar ch2;
+	    int qInc = TclUtfToUniChar(q, &ch2);
+
+	    if (ch1 == ch2) {
+		break;
+	    }
+
+	    q += qInc;
+	    bytesLeft -= qInc;
+	} while (bytesLeft);
+
+	if (bytesLeft == 0) {
+	    /* No match; trim task done; *p is last non-trimmed char */
+	    p += pInc;
+	    break;
+	}
+    } while (p > bytes);
+
+    return numBytes - (p - bytes);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclTrimLeft --
+ *	Takes two counted strings in the Tcl encoding which must both be
+ *	null terminated.  Conceptually trims from the left side of the
+ *	first string all characters found in the second string.
+ *
+ * Results:
+ *	The number of bytes to be removed from the start of the string.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclTrimLeft(
+    const char *bytes,	/* String to be trimmed... */
+    int numBytes,	/* ...and its length in bytes */
+    const char *trim,	/* String of trim characters... */
+    int numTrim)	/* ...and its length in bytes */
+{
+    const char *p = bytes;
+
+    if ((bytes[numBytes] != '\0') || (trim[numTrim] != '\0')) {
+	Tcl_Panic("TclTrimLeft works only on null-terminated strings");
+    }
+
+    /* Empty strings -> nothing to do */
+    if ((numBytes == 0) || (numTrim == 0)) {
+	return 0;
+    }
+
+    /* Outer loop: iterate over string to be trimmed */
+    do {
+	Tcl_UniChar ch1;
+	int pInc = TclUtfToUniChar(p, &ch1);
+	const char *q = trim;
+	int bytesLeft = numTrim;
+
+	/* Inner loop: scan trim string for match to current character */
+	do {
+	    Tcl_UniChar ch2;
+	    int qInc = TclUtfToUniChar(q, &ch2);
+
+	    if (ch1 == ch2) {
+		break;
+	    }
+
+	    q += qInc;
+	    bytesLeft -= qInc;
+	} while (bytesLeft);
+
+	if (bytesLeft == 0) {
+	    /* No match; trim task done; *p is first non-trimmed char */
+	    break;
+	}
+
+	p += pInc;
+	numBytes -= pInc;
+    } while (numBytes);
+
+    return p - bytes;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_Concat --
  *
  *	Concatenate a set of strings into a single large string.
  *
  * Results:
- *	The return value is dynamically-allocated string containing
- *	a concatenation of all the strings in argv, with spaces between
- *	the original argv elements.
+ *	The return value is dynamically-allocated string containing a
+ *	concatenation of all the strings in argv, with spaces between the
+ *	original argv elements.
  *
  * Side effects:
- *	Memory is allocated for the result;  the caller is responsible
- *	for freeing the memory.
+ *	Memory is allocated for the result; the caller is responsible for
+ *	freeing the memory.
  *
  *----------------------------------------------------------------------
  */
 
+/* The whitespace characters trimmed during [concat] operations */
+#define CONCAT_WS " \f\v\r\t\n"
+#define CONCAT_WS_SIZE (int) (sizeof(CONCAT_WS "") - 1)
+
 char *
-Tcl_Concat(argc, argv)
-    int argc;			/* Number of strings to concatenate. */
-    CONST char * CONST *argv;	/* Array of strings to concatenate. */
+Tcl_Concat(
+    int argc,			/* Number of strings to concatenate. */
+    CONST char * CONST *argv)	/* Array of strings to concatenate. */
 {
-    int totalSize, i;
-    char *p;
-    char *result;
+    int i, needSpace = 0, bytesNeeded = 0;
+    char *result, *p;
 
-    for (totalSize = 1, i = 0; i < argc; i++) {
-	totalSize += strlen(argv[i]) + 1;
-    }
-    result = (char *) ckalloc((unsigned) totalSize);
+    /* Dispose of the empty result corner case first to simplify later code */
     if (argc == 0) {
-	*result = '\0';
+	result = (char *) ckalloc(1);
+	result[0] = '\0';
 	return result;
     }
-    for (p = result, i = 0; i < argc; i++) {
-	CONST char *element;
-	int length;
 
+    /* First allocate the result buffer at the size required */
+    for (i = 0;  i < argc;  i++) {
+	bytesNeeded += strlen(argv[i]);
+	if (bytesNeeded < 0) {
+	    Tcl_Panic("Tcl_Concat: max size of Tcl value exceeded");
+	}
+    }
+    if (bytesNeeded + argc - 1 < 0) {
 	/*
-	 * Clip white space off the front and back of the string
-	 * to generate a neater result, and ignore any empty
-	 * elements.
+	 * Panic test could be tighter, but not going to bother for 
+	 * this legacy routine.
 	 */
+	Tcl_Panic("Tcl_Concat: max size of Tcl value exceeded");
+    }
+    /* All element bytes + (argc - 1) spaces + 1 terminating NULL */
+    result = (char *) ckalloc((unsigned) (bytesNeeded + argc));
 
+    for (p = result, i = 0;  i < argc;  i++) {
+	int trim, elemLength;
+	const char *element;
+	
 	element = argv[i];
-	while (isspace(UCHAR(*element))) { /* INTL: ISO space. */
-	    element++;
-	}
-	for (length = strlen(element);
-		(length > 0)
-		&& (isspace(UCHAR(element[length-1]))) /* INTL: ISO space. */
-		&& ((length < 2) || (element[length-2] != '\\'));
-	        length--) {
-	    /* Null loop body. */
-	}
-	if (length == 0) {
+	elemLength = strlen(argv[i]);
+
+	/* Trim away the leading whitespace */
+	trim = TclTrimLeft(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
+	element += trim;
+	elemLength -= trim;
+
+	/*
+	 * Trim away the trailing whitespace.  Do not permit trimming
+	 * to expose a final backslash character.
+	 */
+
+	trim = TclTrimRight(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
+	trim -= trim && (element[elemLength - trim - 1] == '\\');
+	elemLength -= trim;
+
+	/* If we're left with empty element after trimming, do nothing */
+	if (elemLength == 0) {
 	    continue;
 	}
-	memcpy((VOID *) p, (VOID *) element, (size_t) length);
-	p += length;
-	*p = ' ';
-	p++;
-    }
-    if (p != result) {
-	p[-1] = 0;
-    } else {
-	*p = 0;
+
+	/* Append to the result with space if needed */
+	if (needSpace) {
+	    *p++ = ' ';
+	}
+	memcpy(p, element, (size_t) elemLength);
+	p += elemLength;
+	needSpace = 1;
     }
+    *p = '\0';
     return result;
 }
 
@@ -1020,8 +1733,8 @@ Tcl_Concat(argc, argv)
  *	object with spaces between the original strings.
  *
  * Results:
- *	The return value is a new string object containing a concatenation
- *	of the strings in objv. Its ref count is zero.
+ *	The return value is a new string object containing a concatenation of
+ *	the strings in objv. Its ref count is zero.
  *
  * Side effects:
  *	A new object is created.
@@ -1030,27 +1743,29 @@ Tcl_Concat(argc, argv)
  */
 
 Tcl_Obj *
-Tcl_ConcatObj(objc, objv)
-    int objc;			/* Number of objects to concatenate. */
-    Tcl_Obj *CONST objv[];	/* Array of objects to concatenate. */
+Tcl_ConcatObj(
+    int objc,			/* Number of objects to concatenate. */
+    Tcl_Obj *CONST objv[])	/* Array of objects to concatenate. */
 {
-    int allocSize, finalSize, length, elemLength, i;
-    char *p;
-    char *element;
-    char *concatStr;
-    Tcl_Obj *objPtr;
+    int i, elemLength, needSpace = 0, bytesNeeded = 0;
+    const char *element;
+    Tcl_Obj *objPtr, *resPtr;
 
     /*
-     * Check first to see if all the items are of list type.  If so,
-     * we will concat them together as lists, and return a list object.
-     * This is only valid when the lists have no current string
-     * representation, since we don't know what the original type was.
-     * An original string rep may have lost some whitespace info when
-     * converted which could be important.
+     * Check first to see if all the items are of list type or empty. If so,
+     * we will concat them together as lists, and return a list object. This
+     * is only valid when the lists are in canonical form.
      */
+
     for (i = 0;  i < objc;  i++) {
+	int length;
+
 	objPtr = objv[i];
-	if ((objPtr->typePtr != &tclListType) || (objPtr->bytes != NULL)) {
+	if (TclListObjIsCanonical(objPtr)) {
+	    continue;
+	}
+	Tcl_GetStringFromObj(objPtr, &length);
+	if (length > 0) {
 	    break;
 	}
     }
@@ -1058,92 +1773,90 @@ Tcl_ConcatObj(objc, objv)
 	Tcl_Obj **listv;
 	int listc;
 
-	objPtr = Tcl_NewListObj(0, NULL);
+	resPtr = NULL;
 	for (i = 0;  i < objc;  i++) {
 	    /*
-	     * Tcl_ListObjAppendList could be used here, but this saves
-	     * us a bit of type checking (since we've already done it)
-	     * Use of INT_MAX tells us to always put the new stuff on
-	     * the end.  It will be set right in Tcl_ListObjReplace.
+	     * Tcl_ListObjAppendList could be used here, but this saves us a
+	     * bit of type checking (since we've already done it). Use of
+	     * INT_MAX tells us to always put the new stuff on the end. It
+	     * will be set right in Tcl_ListObjReplace.
+	     * Note that all objs at this point are either lists or have an
+	     * empty string rep.
 	     */
-	    Tcl_ListObjGetElements(NULL, objv[i], &listc, &listv);
-	    Tcl_ListObjReplace(NULL, objPtr, INT_MAX, 0, listc, listv);
-	}
-	return objPtr;
-    }
 
-    allocSize = 0;
-    for (i = 0;  i < objc;  i++) {
-	objPtr = objv[i];
-	element = Tcl_GetStringFromObj(objPtr, &length);
-	if ((element != NULL) && (length > 0)) {
-	    allocSize += (length + 1);
+	    objPtr = objv[i];
+	    if (objPtr->bytes && objPtr->length == 0) {
+		continue;
+	    }
+	    TclListObjGetElements(NULL, objPtr, &listc, &listv);
+	    if (listc) {
+		if (resPtr) {
+		    Tcl_ListObjReplace(NULL, resPtr, INT_MAX, 0, listc, listv);
+		} else {
+		    resPtr = TclListObjCopy(NULL, objPtr);
+		}
+	    }
 	}
-    }
-    if (allocSize == 0) {
-	allocSize = 1;		/* enough for the NULL byte at end */
+	if (!resPtr) {
+	    resPtr = Tcl_NewObj();
+	}
+	return resPtr;
     }
 
     /*
-     * Allocate storage for the concatenated result. Note that allocSize
-     * is one more than the total number of characters, and so includes
-     * room for the terminating NULL byte.
+     * Something cannot be determined to be safe, so build the concatenation
+     * the slow way, using the string representations.
      */
-    
-    concatStr = (char *) ckalloc((unsigned) allocSize);
 
+    /* First try to pre-allocate the size required */
+    for (i = 0;  i < objc;  i++) {
+	element = TclGetStringFromObj(objv[i], &elemLength);
+	bytesNeeded += elemLength;
+	if (bytesNeeded < 0) {
+	    break;
+	}
+    }
     /*
-     * Now concatenate the elements. Clip white space off the front and back
-     * to generate a neater result, and ignore any empty elements. Also put
-     * a null byte at the end.
+     * Does not matter if this fails, will simply try later to build up
+     * the string with each Append reallocating as needed with the usual
+     * string append algorithm.  When that fails it will report the error.
      */
+    TclNewObj(resPtr);
+    Tcl_AttemptSetObjLength(resPtr, bytesNeeded + objc - 1);
+    Tcl_SetObjLength(resPtr, 0);
 
-    finalSize = 0;
-    if (objc == 0) {
-	*concatStr = '\0';
-    } else {
-	p = concatStr;
-        for (i = 0;  i < objc;  i++) {
-	    objPtr = objv[i];
-	    element = Tcl_GetStringFromObj(objPtr, &elemLength);
-	    while ((elemLength > 0) && (UCHAR(*element) < 127)
-		    && isspace(UCHAR(*element))) { /* INTL: ISO C space. */
-	         element++;
-		 elemLength--;
-	    }
+    for (i = 0;  i < objc;  i++) {
+	int trim;
+	
+	element = TclGetStringFromObj(objv[i], &elemLength);
 
-	    /*
-	     * Trim trailing white space.  But, be careful not to trim
-	     * a space character if it is preceded by a backslash: in
-	     * this case it could be significant.
-	     */
+	/* Trim away the leading whitespace */
+	trim = TclTrimLeft(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
+	element += trim;
+	elemLength -= trim;
 
-	    while ((elemLength > 0) && (UCHAR(element[elemLength-1]) < 127)
-		    && isspace(UCHAR(element[elemLength-1])) /* INTL: ISO C space. */
-		    && ((elemLength < 2) || (element[elemLength-2] != '\\'))) {
-		elemLength--;
-	    }
-	    if (elemLength == 0) {
-	         continue;	/* nothing left of this element */
-	    }
-	    memcpy((VOID *) p, (VOID *) element, (size_t) elemLength);
-	    p += elemLength;
-	    *p = ' ';
-	    p++;
-	    finalSize += (elemLength + 1);
-        }
-        if (p != concatStr) {
-	    p[-1] = 0;
-	    finalSize -= 1;	/* we overwrote the final ' ' */
-        } else {
-	    *p = 0;
-        }
+	/*
+	 * Trim away the trailing whitespace.  Do not permit trimming
+	 * to expose a final backslash character.
+	 */
+
+	trim = TclTrimRight(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
+	trim -= trim && (element[elemLength - trim - 1] == '\\');
+	elemLength -= trim;
+
+	/* If we're left with empty element after trimming, do nothing */
+	if (elemLength == 0) {
+	    continue;
+	}
+
+	/* Append to the result with space if needed */
+	if (needSpace) {
+	    Tcl_AppendToObj(resPtr, " ", 1);
+	}
+	Tcl_AppendToObj(resPtr, element, elemLength);
+	needSpace = 1;
     }
-    
-    TclNewObj(objPtr);
-    objPtr->bytes  = concatStr;
-    objPtr->length = finalSize;
-    return objPtr;
+    return resPtr;
 }
 
 /*
@@ -1154,10 +1867,9 @@ Tcl_ConcatObj(objc, objv)
  *	See if a particular string matches a particular pattern.
  *
  * Results:
- *	The return value is 1 if string matches pattern, and
- *	0 otherwise.  The matching operation permits the following
- *	special characters in the pattern: *?\[] (see the manual
- *	entry for details on what these mean).
+ *	The return value is 1 if string matches pattern, and 0 otherwise. The
+ *	matching operation permits the following special characters in the
+ *	pattern: *?\[] (see the manual entry for details on what these mean).
  *
  * Side effects:
  *	None.
@@ -1166,12 +1878,12 @@ Tcl_ConcatObj(objc, objv)
  */
 
 int
-Tcl_StringMatch(string, pattern)
-    CONST char *string;		/* String. */
-    CONST char *pattern;	/* Pattern, which may contain special
+Tcl_StringMatch(
+    CONST char *str,		/* String. */
+    CONST char *pattern)	/* Pattern, which may contain special
 				 * characters. */
 {
-    return Tcl_StringCaseMatch(string, pattern, 0);
+    return Tcl_StringCaseMatch(str, pattern, 0);
 }
 
 /*
@@ -1179,14 +1891,13 @@ Tcl_StringMatch(string, pattern)
  *
  * Tcl_StringCaseMatch --
  *
- *	See if a particular string matches a particular pattern.
- *	Allows case insensitivity.
+ *	See if a particular string matches a particular pattern. Allows case
+ *	insensitivity.
  *
  * Results:
- *	The return value is 1 if string matches pattern, and
- *	0 otherwise.  The matching operation permits the following
- *	special characters in the pattern: *?\[] (see the manual
- *	entry for details on what these mean).
+ *	The return value is 1 if string matches pattern, and 0 otherwise. The
+ *	matching operation permits the following special characters in the
+ *	pattern: *?\[] (see the manual entry for details on what these mean).
  *
  * Side effects:
  *	None.
@@ -1195,127 +1906,133 @@ Tcl_StringMatch(string, pattern)
  */
 
 int
-Tcl_StringCaseMatch(string, pattern, nocase)
-    CONST char *string;		/* String. */
-    CONST char *pattern;	/* Pattern, which may contain special
+Tcl_StringCaseMatch(
+    CONST char *str,		/* String. */
+    CONST char *pattern,	/* Pattern, which may contain special
 				 * characters. */
-    int nocase;			/* 0 for case sensitive, 1 for insensitive */
+    int nocase)			/* 0 for case sensitive, 1 for insensitive */
 {
     int p, charLen;
     CONST char *pstart = pattern;
     Tcl_UniChar ch1, ch2;
-    
+
     while (1) {
 	p = *pattern;
-	
+
 	/*
-	 * See if we're at the end of both the pattern and the string.  If
-	 * so, we succeeded.  If we're at the end of the pattern but not at
-	 * the end of the string, we failed.
+	 * See if we're at the end of both the pattern and the string. If so,
+	 * we succeeded. If we're at the end of the pattern but not at the end
+	 * of the string, we failed.
 	 */
-	
+
 	if (p == '\0') {
-	    return (*string == '\0');
+	    return (*str == '\0');
 	}
-	if ((*string == '\0') && (p != '*')) {
+	if ((*str == '\0') && (p != '*')) {
 	    return 0;
 	}
 
 	/*
-	 * Check for a "*" as the next pattern character.  It matches
-	 * any substring.  We handle this by calling ourselves
-	 * recursively for each postfix of string, until either we
-	 * match or we reach the end of the string.
+	 * Check for a "*" as the next pattern character. It matches any
+	 * substring. We handle this by calling ourselves recursively for each
+	 * postfix of string, until either we match or we reach the end of the
+	 * string.
 	 */
-	
+
 	if (p == '*') {
 	    /*
 	     * Skip all successive *'s in the pattern
 	     */
+
 	    while (*(++pattern) == '*') {}
 	    p = *pattern;
 	    if (p == '\0') {
 		return 1;
 	    }
+
 	    /*
 	     * This is a special case optimization for single-byte utf.
 	     */
+
 	    if (UCHAR(*pattern) < 0x80) {
 		ch2 = (Tcl_UniChar)
-		    (nocase ? tolower(UCHAR(*pattern)) : UCHAR(*pattern));
+			(nocase ? tolower(UCHAR(*pattern)) : UCHAR(*pattern));
 	    } else {
 		Tcl_UtfToUniChar(pattern, &ch2);
 		if (nocase) {
 		    ch2 = Tcl_UniCharToLower(ch2);
 		}
 	    }
+
 	    while (1) {
 		/*
 		 * Optimization for matching - cruise through the string
 		 * quickly if the next char in the pattern isn't a special
 		 * character
 		 */
+
 		if ((p != '[') && (p != '?') && (p != '\\')) {
 		    if (nocase) {
-			while (*string) {
-			    charLen = TclUtfToUniChar(string, &ch1);
+			while (*str) {
+			    charLen = TclUtfToUniChar(str, &ch1);
 			    if (ch2==ch1 || ch2==Tcl_UniCharToLower(ch1)) {
 				break;
 			    }
-			    string += charLen;
+			    str += charLen;
 			}
 		    } else {
 			/*
 			 * There's no point in trying to make this code
-			 * shorter, as the number of bytes you want to
-			 * compare each time is non-constant.
+			 * shorter, as the number of bytes you want to compare
+			 * each time is non-constant.
 			 */
-			while (*string) {
-			    charLen = TclUtfToUniChar(string, &ch1);
+
+			while (*str) {
+			    charLen = TclUtfToUniChar(str, &ch1);
 			    if (ch2 == ch1) {
 				break;
 			    }
-			    string += charLen;
+			    str += charLen;
 			}
 		    }
 		}
-		if (Tcl_StringCaseMatch(string, pattern, nocase)) {
+		if (Tcl_StringCaseMatch(str, pattern, nocase)) {
 		    return 1;
 		}
-		if (*string == '\0') {
+		if (*str == '\0') {
 		    return 0;
 		}
-		string += TclUtfToUniChar(string, &ch1);
+		str += TclUtfToUniChar(str, &ch1);
 	    }
 	}
 
 	/*
-	 * Check for a "?" as the next pattern character.  It matches
-	 * any single character.
+	 * Check for a "?" as the next pattern character. It matches any
+	 * single character.
 	 */
 
 	if (p == '?') {
 	    pattern++;
-	    string += TclUtfToUniChar(string, &ch1);
+	    str += TclUtfToUniChar(str, &ch1);
 	    continue;
 	}
 
 	/*
-	 * Check for a "[" as the next pattern character.  It is followed
-	 * by a list of characters that are acceptable, or by a range
-	 * (two characters separated by "-").
+	 * Check for a "[" as the next pattern character. It is followed by a
+	 * list of characters that are acceptable, or by a range (two
+	 * characters separated by "-").
 	 */
 
 	if (p == '[') {
 	    Tcl_UniChar startChar, endChar;
 
 	    pattern++;
-	    if (UCHAR(*string) < 0x80) {
+	    if (UCHAR(*str) < 0x80) {
 		ch1 = (Tcl_UniChar)
-		    (nocase ? tolower(UCHAR(*string)) : UCHAR(*string));
-		string++;
+			(nocase ? tolower(UCHAR(*str)) : UCHAR(*str));
+		str++;
 	    } else {
-		string += Tcl_UtfToUniChar(string, &ch1);
+		str += Tcl_UtfToUniChar(str, &ch1);
 		if (nocase) {
 		    ch1 = Tcl_UniCharToLower(ch1);
 		}
@@ -1325,8 +2042,8 @@ Tcl_StringCaseMatch(string, pattern, nocase)
 		    return 0;
 		}
 		if (UCHAR(*pattern) < 0x80) {
-		    startChar = (Tcl_UniChar)
-			(nocase ? tolower(UCHAR(*pattern)) : UCHAR(*pattern));
+		    startChar = (Tcl_UniChar) (nocase
+			    ? tolower(UCHAR(*pattern)) : UCHAR(*pattern));
 		    pattern++;
 		} else {
 		    pattern += Tcl_UtfToUniChar(pattern, &startChar);
@@ -1340,9 +2057,8 @@ Tcl_StringCaseMatch(string, pattern, nocase)
 			return 0;
 		    }
 		    if (UCHAR(*pattern) < 0x80) {
-			endChar = (Tcl_UniChar)
-			    (nocase ? tolower(UCHAR(*pattern))
-				    : UCHAR(*pattern));
+			endChar = (Tcl_UniChar) (nocase
+				? tolower(UCHAR(*pattern)) : UCHAR(*pattern));
 			pattern++;
 		    } else {
 			pattern += Tcl_UtfToUniChar(pattern, &endChar);
@@ -1374,8 +2090,8 @@ Tcl_StringCaseMatch(string, pattern, nocase)
 	}
 
 	/*
-	 * If the next pattern character is '\', just strip off the '\'
-	 * so we do exact matching on the character that follows.
+	 * If the next pattern character is '\', just strip off the '\' so we
+	 * do exact matching on the character that follows.
 	 */
 
 	if (p == '\\') {
@@ -1386,11 +2102,11 @@ Tcl_StringCaseMatch(string, pattern, nocase)
 	}
 
 	/*
-	 * There's no special character.  Just make sure that the next
-	 * bytes of each string match.
+	 * There's no special character. Just make sure that the next bytes of
+	 * each string match.
 	 */
 
-	string  += TclUtfToUniChar(string, &ch1);
+	str += TclUtfToUniChar(str, &ch1);
 	pattern += TclUtfToUniChar(pattern, &ch2);
 	if (nocase) {
 	    if (Tcl_UniCharToLower(ch1) != Tcl_UniCharToLower(ch2)) {
@@ -1405,14 +2121,16 @@ Tcl_StringCaseMatch(string, pattern, nocase)
 /*
  *----------------------------------------------------------------------
  *
- * TclMatchIsTrivial --
+ * TclByteArrayMatch --
  *
- *	Test whether a particular glob pattern is a trivial pattern.
- *	(i.e. where matching is the same as equality testing).
+ *	See if a particular string matches a particular pattern.  Does not
+ *	allow for case insensitivity.
+ *	Parallels tclUtf.c:TclUniCharMatch, adjusted for char* and sans nocase.
  *
  * Results:
- *	A boolean indicating whether the pattern is free of all of the
- *	glob special chars.
+ *	The return value is 1 if string matches pattern, and 0 otherwise. The
+ *	matching operation permits the following special characters in the
+ *	pattern: *?\[] (see the manual entry for details on what these mean).
  *
  * Side effects:
  *	None.
@@ -1421,32 +2139,222 @@ Tcl_StringCaseMatch(string, pattern, nocase)
  */
 
 int
-TclMatchIsTrivial(pattern)
-    CONST char *pattern;
+TclByteArrayMatch(
+    const unsigned char *string,	/* String. */
+    int strLen,				/* Length of String */
+    const unsigned char *pattern,	/* Pattern, which may contain special
+					 * characters. */
+    int ptnLen,				/* Length of Pattern */
+    int flags)
 {
-    CONST char *p = pattern;
+    const unsigned char *stringEnd, *patternEnd;
+    unsigned char p;
+
+    stringEnd = string + strLen;
+    patternEnd = pattern + ptnLen;
 
     while (1) {
-	switch (*p++) {
-	case '\0':
-	    return 1;
-	case '*':
-	case '?':
-	case '[':
-	case '\\':
+	/*
+	 * See if we're at the end of both the pattern and the string. If so,
+	 * we succeeded. If we're at the end of the pattern but not at the end
+	 * of the string, we failed.
+	 */
+
+	if (pattern == patternEnd) {
+	    return (string == stringEnd);
+	}
+	p = *pattern;
+	if ((string == stringEnd) && (p != '*')) {
+	    return 0;
+	}
+
+	/*
+	 * Check for a "*" as the next pattern character. It matches any
+	 * substring. We handle this by skipping all the characters up to the
+	 * next matching one in the pattern, and then calling ourselves
+	 * recursively for each postfix of string, until either we match or we
+	 * reach the end of the string.
+	 */
+
+	if (p == '*') {
+	    /*
+	     * Skip all successive *'s in the pattern.
+	     */
+
+	    while ((++pattern < patternEnd) && (*pattern == '*')) {
+		/* empty body */
+	    }
+	    if (pattern == patternEnd) {
+		return 1;
+	    }
+	    p = *pattern;
+	    while (1) {
+		/*
+		 * Optimization for matching - cruise through the string
+		 * quickly if the next char in the pattern isn't a special
+		 * character.
+		 */
+
+		if ((p != '[') && (p != '?') && (p != '\\')) {
+		    while ((string < stringEnd) && (p != *string)) {
+			string++;
+		    }
+		}
+		if (TclByteArrayMatch(string, stringEnd - string,
+				pattern, patternEnd - pattern, 0)) {
+		    return 1;
+		}
+		if (string == stringEnd) {
+		    return 0;
+		}
+		string++;
+	    }
+	}
+
+	/*
+	 * Check for a "?" as the next pattern character. It matches any
+	 * single character.
+	 */
+
+	if (p == '?') {
+	    pattern++;
+	    string++;
+	    continue;
+	}
+
+	/*
+	 * Check for a "[" as the next pattern character. It is followed by a
+	 * list of characters that are acceptable, or by a range (two
+	 * characters separated by "-").
+	 */
+
+	if (p == '[') {
+	    unsigned char ch1, startChar, endChar;
+
+	    pattern++;
+	    ch1 = *string;
+	    string++;
+	    while (1) {
+		if ((*pattern == ']') || (pattern == patternEnd)) {
+		    return 0;
+		}
+		startChar = *pattern;
+		pattern++;
+		if (*pattern == '-') {
+		    pattern++;
+		    if (pattern == patternEnd) {
+			return 0;
+		    }
+		    endChar = *pattern;
+		    pattern++;
+		    if (((startChar <= ch1) && (ch1 <= endChar))
+			    || ((endChar <= ch1) && (ch1 <= startChar))) {
+			/*
+			 * Matches ranges of form [a-z] or [z-a].
+			 */
+			break;
+		    }
+		} else if (startChar == ch1) {
+		    break;
+		}
+	    }
+	    while (*pattern != ']') {
+		if (pattern == patternEnd) {
+		    pattern--;
+		    break;
+		}
+		pattern++;
+	    }
+	    pattern++;
+	    continue;
+	}
+
+	/*
+	 * If the next pattern character is '\', just strip off the '\' so we
+	 * do exact matching on the character that follows.
+	 */
+
+	if (p == '\\') {
+	    if (++pattern == patternEnd) {
+		return 0;
+	    }
+	}
+
+	/*
+	 * There's no special character. Just make sure that the next bytes of
+	 * each string match.
+	 */
+
+	if (*string != *pattern) {
 	    return 0;
 	}
+	string++;
+	pattern++;
     }
 }
 
 /*
  *----------------------------------------------------------------------
  *
+ * TclStringMatchObj --
+ *
+ *	See if a particular string matches a particular pattern.
+ *	Allows case insensitivity.  This is the generic multi-type handler
+ *	for the various matching algorithms.
+ *
+ * Results:
+ *	The return value is 1 if string matches pattern, and 0 otherwise. The
+ *	matching operation permits the following special characters in the
+ *	pattern: *?\[] (see the manual entry for details on what these mean).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclStringMatchObj(
+    Tcl_Obj *strObj,	/* string object. */
+    Tcl_Obj *ptnObj,	/* pattern object. */
+    int flags)		/* Only TCL_MATCH_NOCASE should be passed or 0. */
+{
+    int match, length, plen;
+
+    /*
+     * Promote based on the type of incoming object.
+     * XXX: Currently doesn't take advantage of exact-ness that
+     * XXX: TclReToGlob tells us about
+    trivial = nocase ? 0 : TclMatchIsTrivial(TclGetString(ptnObj));
+     */
+
+    if (strObj->typePtr == &tclStringType) {
+	Tcl_UniChar *udata, *uptn;
+
+	udata = Tcl_GetUnicodeFromObj(strObj, &length);
+	uptn  = Tcl_GetUnicodeFromObj(ptnObj, &plen);
+	match = TclUniCharMatch(udata, length, uptn, plen, flags);
+    } else if ((strObj->typePtr == &tclByteArrayType) && !flags) {
+	unsigned char *data, *ptn;
+
+	data = Tcl_GetByteArrayFromObj(strObj, &length);
+	ptn  = Tcl_GetByteArrayFromObj(ptnObj, &plen);
+	match = TclByteArrayMatch(data, length, ptn, plen, 0);
+    } else {
+	match = Tcl_StringCaseMatch(TclGetString(strObj),
+		TclGetString(ptnObj), flags);
+    }
+    return match;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_DStringInit --
  *
- *	Initializes a dynamic string, discarding any previous contents
- *	of the string (Tcl_DStringFree should have been called already
- *	if the dynamic string was previously in use).
+ *	Initializes a dynamic string, discarding any previous contents of the
+ *	string (Tcl_DStringFree should have been called already if the dynamic
+ *	string was previously in use).
  *
  * Results:
  *	None.
@@ -1458,8 +2366,8 @@ TclMatchIsTrivial(pattern)
  */
 
 void
-Tcl_DStringInit(dsPtr)
-    Tcl_DString *dsPtr;		/* Pointer to structure for dynamic string. */
+Tcl_DStringInit(
+    Tcl_DString *dsPtr)		/* Pointer to structure for dynamic string. */
 {
     dsPtr->string = dsPtr->staticSpace;
     dsPtr->length = 0;
@@ -1472,66 +2380,63 @@ Tcl_DStringInit(dsPtr)
  *
  * Tcl_DStringAppend --
  *
- *	Append more characters to the current value of a dynamic string.
+ *	Append more bytes to the current value of a dynamic string.
  *
  * Results:
  *	The return value is a pointer to the dynamic string's new value.
  *
  * Side effects:
- *	Length bytes from string (or all of string if length is less
- *	than zero) are added to the current value of the string. Memory
- *	gets reallocated if needed to accomodate the string's new size.
+ *	Length bytes from "bytes" (or all of "bytes" if length is less than
+ *	zero) are added to the current value of the string. Memory gets
+ *	reallocated if needed to accomodate the string's new size.
  *
  *----------------------------------------------------------------------
  */
 
 char *
-Tcl_DStringAppend(dsPtr, string, length)
-    Tcl_DString *dsPtr;		/* Structure describing dynamic string. */
-    CONST char *string;		/* String to append.  If length is -1 then
-				 * this must be null-terminated. */
-    int length;			/* Number of characters from string to
-				 * append.  If < 0, then append all of string,
-				 * up to null at end. */
+Tcl_DStringAppend(
+    Tcl_DString *dsPtr,		/* Structure describing dynamic string. */
+    CONST char *bytes,		/* String to append. If length is -1 then this
+				 * must be null-terminated. */
+    int length)			/* Number of bytes from "bytes" to append. If
+				 * < 0, then append all of bytes, up to null
+				 * at end. */
 {
     int newSize;
     char *dst;
     CONST char *end;
 
     if (length < 0) {
-	length = strlen(string);
+	length = strlen(bytes);
     }
     newSize = length + dsPtr->length;
 
     /*
-     * Allocate a larger buffer for the string if the current one isn't
-     * large enough. Allocate extra space in the new buffer so that there
-     * will be room to grow before we have to allocate again.
+     * Allocate a larger buffer for the string if the current one isn't large
+     * enough. Allocate extra space in the new buffer so that there will be
+     * room to grow before we have to allocate again.
      */
 
     if (newSize >= dsPtr->spaceAvl) {
 	dsPtr->spaceAvl = newSize * 2;
 	if (dsPtr->string == dsPtr->staticSpace) {
-	    char *newString;
+	    char *newString = ckalloc((unsigned) dsPtr->spaceAvl);
 
-	    newString = (char *) ckalloc((unsigned) dsPtr->spaceAvl);
-	    memcpy((VOID *) newString, (VOID *) dsPtr->string,
-		    (size_t) dsPtr->length);
+	    memcpy(newString, dsPtr->string, (size_t) dsPtr->length);
 	    dsPtr->string = newString;
 	} else {
-	    dsPtr->string = (char *) ckrealloc((VOID *) dsPtr->string,
+	    dsPtr->string = ckrealloc((void *) dsPtr->string,
 		    (size_t) dsPtr->spaceAvl);
 	}
     }
 
     /*
-     * Copy the new string into the buffer at the end of the old
-     * one.
+     * Copy the new string into the buffer at the end of the old one.
      */
 
-    for (dst = dsPtr->string + dsPtr->length, end = string+length;
-	    string < end; string++, dst++) {
-	*dst = *string;
+    for (dst = dsPtr->string + dsPtr->length, end = bytes+length;
+	    bytes < end; bytes++, dst++) {
+	*dst = *bytes;
     }
     *dst = '\0';
     dsPtr->length += length;
@@ -1549,62 +2454,67 @@ Tcl_DStringAppend(dsPtr, string, length)
  *	The return value is a pointer to the dynamic string's new value.
  *
  * Side effects:
- *	String is reformatted as a list element and added to the current
- *	value of the string.  Memory gets reallocated if needed to
- *	accomodate the string's new size.
+ *	String is reformatted as a list element and added to the current value
+ *	of the string. Memory gets reallocated if needed to accomodate the
+ *	string's new size.
  *
  *----------------------------------------------------------------------
  */
 
 char *
-Tcl_DStringAppendElement(dsPtr, string)
-    Tcl_DString *dsPtr;		/* Structure describing dynamic string. */
-    CONST char *string;		/* String to append.  Must be
+Tcl_DStringAppendElement(
+    Tcl_DString *dsPtr,		/* Structure describing dynamic string. */
+    CONST char *element)	/* String to append. Must be
 				 * null-terminated. */
 {
-    int newSize, flags, strSize;
-    char *dst;
-
-    strSize = ((string == NULL) ? 0 : strlen(string));
-    newSize = Tcl_ScanCountedElement(string, strSize, &flags)
-	+ dsPtr->length + 1;
+    char *dst = dsPtr->string + dsPtr->length;
+    int needSpace = TclNeedSpace(dsPtr->string, dst);
+    int flags = needSpace ? TCL_DONT_QUOTE_HASH : 0;
+    int newSize = dsPtr->length + needSpace
+	    + TclScanElement(element, -1, &flags);
 
     /*
-     * Allocate a larger buffer for the string if the current one isn't
-     * large enough.  Allocate extra space in the new buffer so that there
-     * will be room to grow before we have to allocate again.
-     * SPECIAL NOTE: must use memcpy, not strcpy, to copy the string
-     * to a larger buffer, since there may be embedded NULLs in the
-     * string in some cases.
+     * Allocate a larger buffer for the string if the current one isn't large
+     * enough. Allocate extra space in the new buffer so that there will be
+     * room to grow before we have to allocate again. SPECIAL NOTE: must use
+     * memcpy, not strcpy, to copy the string to a larger buffer, since there
+     * may be embedded NULLs in the string in some cases.
      */
 
     if (newSize >= dsPtr->spaceAvl) {
 	dsPtr->spaceAvl = newSize * 2;
 	if (dsPtr->string == dsPtr->staticSpace) {
-	    char *newString;
+	    char *newString = ckalloc((unsigned) dsPtr->spaceAvl);
 
-	    newString = (char *) ckalloc((unsigned) dsPtr->spaceAvl);
-	    memcpy((VOID *) newString, (VOID *) dsPtr->string,
-		    (size_t) dsPtr->length);
+	    memcpy(newString, dsPtr->string, (size_t) dsPtr->length);
 	    dsPtr->string = newString;
 	} else {
-	    dsPtr->string = (char *) ckrealloc((VOID *) dsPtr->string,
+	    dsPtr->string = (char *) ckrealloc((void *) dsPtr->string,
 		    (size_t) dsPtr->spaceAvl);
 	}
+	dst = dsPtr->string + dsPtr->length;
     }
 
     /*
-     * Convert the new string to a list element and copy it into the
-     * buffer at the end, with a space, if needed.
+     * Convert the new string to a list element and copy it into the buffer at
+     * the end, with a space, if needed.
      */
 
-    dst = dsPtr->string + dsPtr->length;
-    if (TclNeedSpace(dsPtr->string, dst)) {
+    if (needSpace) {
 	*dst = ' ';
 	dst++;
 	dsPtr->length++;
+
+	/*
+	 * If we need a space to separate this element from preceding stuff,
+	 * then this element will not lead a list, and need not have it's
+	 * leading '#' quoted.
+	 */
+
+	flags |= TCL_DONT_QUOTE_HASH;
     }
-    dsPtr->length += Tcl_ConvertCountedElement(string, strSize, dst, flags);
+    dsPtr->length += TclConvertElement(element, -1, dst, flags);
+    dsPtr->string[dsPtr->length] = '\0';
     return dsPtr->string;
 }
 
@@ -1613,25 +2523,24 @@ Tcl_DStringAppendElement(dsPtr, string)
  *
  * Tcl_DStringSetLength --
  *
- *	Change the length of a dynamic string.  This can cause the
- *	string to either grow or shrink, depending on the value of
- *	length.
+ *	Change the length of a dynamic string. This can cause the string to
+ *	either grow or shrink, depending on the value of length.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The length of dsPtr is changed to length and a null byte is
- *	stored at that position in the string.  If length is larger
- *	than the space allocated for dsPtr, then a panic occurs.
+ *	The length of dsPtr is changed to length and a null byte is stored at
+ *	that position in the string. If length is larger than the space
+ *	allocated for dsPtr, then a panic occurs.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DStringSetLength(dsPtr, length)
-    Tcl_DString *dsPtr;		/* Structure describing dynamic string. */
-    int length;			/* New length for dynamic string. */
+Tcl_DStringSetLength(
+    Tcl_DString *dsPtr,		/* Structure describing dynamic string. */
+    int length)			/* New length for dynamic string. */
 {
     int newsize;
 
@@ -1640,15 +2549,15 @@ Tcl_DStringSetLength(dsPtr, length)
     }
     if (length >= dsPtr->spaceAvl) {
 	/*
-	 * There are two interesting cases here.  In the first case, the user
-	 * may be trying to allocate a large buffer of a specific size.  It
+	 * There are two interesting cases here. In the first case, the user
+	 * may be trying to allocate a large buffer of a specific size. It
 	 * would be wasteful to overallocate that buffer, so we just allocate
-	 * enough for the requested size plus the trailing null byte.  In the
+	 * enough for the requested size plus the trailing null byte. In the
 	 * second case, we are growing the buffer incrementally, so we need
-	 * behavior similar to Tcl_DStringAppend.  The requested length will
-	 * usually be a small delta above the current spaceAvl, so we'll end up
-	 * doubling the old size.  This won't grow the buffer quite as quickly,
-	 * but it should be close enough.
+	 * behavior similar to Tcl_DStringAppend. The requested length will
+	 * usually be a small delta above the current spaceAvl, so we'll end
+	 * up doubling the old size. This won't grow the buffer quite as
+	 * quickly, but it should be close enough.
 	 */
 
 	newsize = dsPtr->spaceAvl * 2;
@@ -1658,14 +2567,12 @@ Tcl_DStringSetLength(dsPtr, length)
 	    dsPtr->spaceAvl = length + 1;
 	}
 	if (dsPtr->string == dsPtr->staticSpace) {
-	    char *newString;
+	    char *newString = ckalloc((unsigned) dsPtr->spaceAvl);
 
-	    newString = (char *) ckalloc((unsigned) dsPtr->spaceAvl);
-	    memcpy((VOID *) newString, (VOID *) dsPtr->string,
-		    (size_t) dsPtr->length);
+	    memcpy(newString, dsPtr->string, (size_t) dsPtr->length);
 	    dsPtr->string = newString;
 	} else {
-	    dsPtr->string = (char *) ckrealloc((VOID *) dsPtr->string,
+	    dsPtr->string = (char *) ckrealloc((void *) dsPtr->string,
 		    (size_t) dsPtr->spaceAvl);
 	}
     }
@@ -1678,21 +2585,22 @@ Tcl_DStringSetLength(dsPtr, length)
  *
  * Tcl_DStringFree --
  *
- *	Frees up any memory allocated for the dynamic string and
- *	reinitializes the string to an empty state.
+ *	Frees up any memory allocated for the dynamic string and reinitializes
+ *	the string to an empty state.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The previous contents of the dynamic string are lost, and
- *	the new value is an empty string.
+ *	The previous contents of the dynamic string are lost, and the new
+ *	value is an empty string.
  *
- *---------------------------------------------------------------------- */
+ *----------------------------------------------------------------------
+ */
 
 void
-Tcl_DStringFree(dsPtr)
-    Tcl_DString *dsPtr;		/* Structure describing dynamic string. */
+Tcl_DStringFree(
+    Tcl_DString *dsPtr)		/* Structure describing dynamic string. */
 {
     if (dsPtr->string != dsPtr->staticSpace) {
 	ckfree(dsPtr->string);
@@ -1708,29 +2616,28 @@ Tcl_DStringFree(dsPtr)
  *
  * Tcl_DStringResult --
  *
- *	This procedure moves the value of a dynamic string into an
- *	interpreter as its string result. Afterwards, the dynamic string
- *	is reset to an empty string.
+ *	This function moves the value of a dynamic string into an interpreter
+ *	as its string result. Afterwards, the dynamic string is reset to an
+ *	empty string.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The string is "moved" to interp's result, and any existing
- *	string result for interp is freed. dsPtr is reinitialized to
- *	an empty string.
+ *	The string is "moved" to interp's result, and any existing string
+ *	result for interp is freed. dsPtr is reinitialized to an empty string.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_DStringResult(interp, dsPtr)
-    Tcl_Interp *interp;		/* Interpreter whose result is to be reset. */
-    Tcl_DString *dsPtr;		/* Dynamic string that is to become the
+Tcl_DStringResult(
+    Tcl_Interp *interp,		/* Interpreter whose result is to be reset. */
+    Tcl_DString *dsPtr)		/* Dynamic string that is to become the
 				 * result of interp. */
 {
     Tcl_ResetResult(interp);
-    
+
     if (dsPtr->string != dsPtr->staticSpace) {
 	interp->result = dsPtr->string;
 	interp->freeProc = TCL_DYNAMIC;
@@ -1740,7 +2647,7 @@ Tcl_DStringResult(interp, dsPtr)
     } else {
 	Tcl_SetResult(interp, dsPtr->string, TCL_VOLATILE);
     }
-    
+
     dsPtr->string = dsPtr->staticSpace;
     dsPtr->length = 0;
     dsPtr->spaceAvl = TCL_DSTRING_STATIC_SIZE;
@@ -1752,14 +2659,14 @@ Tcl_DStringResult(interp, dsPtr)
  *
  * Tcl_DStringGetResult --
  *
- *	This procedure moves an interpreter's result into a dynamic string.
+ *	This function moves an interpreter's result into a dynamic string.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	The interpreter's string result is cleared, and the previous
- *	contents of dsPtr are freed.
+ *	The interpreter's string result is cleared, and the previous contents
+ *	of dsPtr are freed.
  *
  *	If the string result is empty, the object result is moved to the
  *	string result, then the object result is reset.
@@ -1768,26 +2675,23 @@ Tcl_DStringResult(interp, dsPtr)
  */
 
 void
-Tcl_DStringGetResult(interp, dsPtr)
-    Tcl_Interp *interp;		/* Interpreter whose result is to be reset. */
-    Tcl_DString *dsPtr;		/* Dynamic string that is to become the
-				 * result of interp. */
+Tcl_DStringGetResult(
+    Tcl_Interp *interp,		/* Interpreter whose result is to be reset. */
+    Tcl_DString *dsPtr)		/* Dynamic string that is to become the result
+				 * of interp. */
 {
     Interp *iPtr = (Interp *) interp;
-    
+
     if (dsPtr->string != dsPtr->staticSpace) {
 	ckfree(dsPtr->string);
     }
 
     /*
-     * If the string result is empty, move the object result to the
-     * string result, then reset the object result.
+     * If the string result is empty, move the object result to the string
+     * result, then reset the object result.
      */
 
-    if (*(iPtr->result) == 0) {
-	Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)),
-	        TCL_VOLATILE);
-    }
+    (void) Tcl_GetStringResult(interp);
 
     dsPtr->length = strlen(iPtr->result);
     if (iPtr->freeProc != NULL) {
@@ -1796,7 +2700,7 @@ Tcl_DStringGetResult(interp, dsPtr)
 	    dsPtr->spaceAvl = dsPtr->length+1;
 	} else {
 	    dsPtr->string = (char *) ckalloc((unsigned) (dsPtr->length+1));
-	    strcpy(dsPtr->string, iPtr->result);
+	    memcpy(dsPtr->string, iPtr->result, (unsigned) dsPtr->length+1);
 	    (*iPtr->freeProc)(iPtr->result);
 	}
 	dsPtr->spaceAvl = dsPtr->length+1;
@@ -1809,9 +2713,9 @@ Tcl_DStringGetResult(interp, dsPtr)
 	    dsPtr->string = (char *) ckalloc((unsigned) (dsPtr->length + 1));
 	    dsPtr->spaceAvl = dsPtr->length + 1;
 	}
-	strcpy(dsPtr->string, iPtr->result);
+	memcpy(dsPtr->string, iPtr->result, (unsigned) dsPtr->length+1);
     }
-    
+
     iPtr->result = iPtr->resultSpace;
     iPtr->resultSpace[0] = 0;
 }
@@ -1821,9 +2725,9 @@ Tcl_DStringGetResult(interp, dsPtr)
  *
  * Tcl_DStringStartSublist --
  *
- *	This procedure adds the necessary information to a dynamic
- *	string (e.g. " {" to start a sublist.  Future element
- *	appends will be in the sublist rather than the main list.
+ *	This function adds the necessary information to a dynamic string
+ *	(e.g. " {") to start a sublist. Future element appends will be in the
+ *	sublist rather than the main list.
  *
  * Results:
  *	None.
@@ -1835,8 +2739,8 @@ Tcl_DStringGetResult(interp, dsPtr)
  */
 
 void
-Tcl_DStringStartSublist(dsPtr)
-    Tcl_DString *dsPtr;			/* Dynamic string. */
+Tcl_DStringStartSublist(
+    Tcl_DString *dsPtr)		/* Dynamic string. */
 {
     if (TclNeedSpace(dsPtr->string, dsPtr->string + dsPtr->length)) {
 	Tcl_DStringAppend(dsPtr, " {", -1);
@@ -1850,10 +2754,9 @@ Tcl_DStringStartSublist(dsPtr)
  *
  * Tcl_DStringEndSublist --
  *
- *	This procedure adds the necessary characters to a dynamic
- *	string to end a sublist (e.g. "}").  Future element appends
- *	will be in the enclosing (sub)list rather than the current
- *	sublist.
+ *	This function adds the necessary characters to a dynamic string to end
+ *	a sublist (e.g. "}"). Future element appends will be in the enclosing
+ *	(sub)list rather than the current sublist.
  *
  * Results:
  *	None.
@@ -1865,8 +2768,8 @@ Tcl_DStringStartSublist(dsPtr)
  */
 
 void
-Tcl_DStringEndSublist(dsPtr)
-    Tcl_DString *dsPtr;			/* Dynamic string. */
+Tcl_DStringEndSublist(
+    Tcl_DString *dsPtr)		/* Dynamic string. */
 {
     Tcl_DStringAppend(dsPtr, "}", -1);
 }
@@ -1876,14 +2779,14 @@ Tcl_DStringEndSublist(dsPtr)
  *
  * Tcl_PrintDouble --
  *
- *	Given a floating-point value, this procedure converts it to
- *	an ASCII string using.
+ *	Given a floating-point value, this function converts it to an ASCII
+ *	string using.
  *
  * Results:
- *	The ASCII equivalent of "value" is written at "dst".  It is
- *	written using the current precision, and it is guaranteed to
- *	contain a decimal point or exponent, so that it looks like
- *	a floating-point value and not an integer.
+ *	The ASCII equivalent of "value" is written at "dst". It is written
+ *	using the current precision, and it is guaranteed to contain a decimal
+ *	point or exponent, so that it looks like a floating-point value and
+ *	not an integer.
  *
  * Side effects:
  *	None.
@@ -1892,43 +2795,158 @@ Tcl_DStringEndSublist(dsPtr)
  */
 
 void
-Tcl_PrintDouble(interp, value, dst)
-    Tcl_Interp *interp;			/* Interpreter whose tcl_precision
-					 * variable used to be used to control
-					 * printing.  It's ignored now. */
-    double value;			/* Value to print as string. */
-    char *dst;				/* Where to store converted value;
-					 * must have at least TCL_DOUBLE_SPACE
-					 * characters. */
+Tcl_PrintDouble(
+    Tcl_Interp *interp,		/* Interpreter whose tcl_precision variable
+				 * used to be used to control printing. It's
+				 * ignored now. */
+    double value,		/* Value to print as string. */
+    char *dst)			/* Where to store converted value; must have
+				 * at least TCL_DOUBLE_SPACE characters. */
 {
     char *p, c;
-    Tcl_UniChar ch;
+    int exponent;
+    int signum;
+    char* digits;
+    char* end;
 
-    Tcl_MutexLock(&precisionMutex);
-    sprintf(dst, precisionFormat, value);
-    Tcl_MutexUnlock(&precisionMutex);
+    int *precisionPtr = Tcl_GetThreadData(&precisionKey, (int)sizeof(int));
 
     /*
-     * If the ASCII result looks like an integer, add ".0" so that it
-     * doesn't look like an integer anymore.  This prevents floating-point
-     * values from being converted to integers unintentionally.
-     * Check for ASCII specifically to speed up the function.
-     */
+	 * Handle NaN.
+	 */
 
-    for (p = dst; *p != 0; ) {
-	if (UCHAR(*p) < 0x80) {
-	    c = *p++;
-	} else {
-	    p += Tcl_UtfToUniChar(p, &ch);
-	    c = UCHAR(ch);
+	if (TclIsNaN(value)) {
+	    TclFormatNaN(value, dst);
+	    return;
 	}
-	if ((c == '.') || isalpha(UCHAR(c))) {	/* INTL: ISO only. */
+
+	/*
+	 * Handle infinities.
+	 */
+
+	if (TclIsInfinite(value)) {
+	/*
+	 * Remember to copy the terminating NUL too.
+	 */
+	
+	    if (value < 0) {
+	    memcpy(dst, "-Inf", 5);
+	    } else {
+	    memcpy(dst, "Inf", 4);
+	    }
 	    return;
 	}
+
+	/*
+	 * Ordinary (normal and denormal) values.
+	 */
+
+    if (*precisionPtr == 0) {
+	digits = TclDoubleDigits(value, -1, TCL_DD_SHORTEST,
+				 &exponent, &signum, &end);
+    } else {
+	/*
+	 * There are at least two possible interpretations for tcl_precision.
+	 *
+	 * The first is, "choose the decimal representation having
+	 * $tcl_precision digits of significance that is nearest to the
+	 * given number, breaking ties by rounding to even, and then
+	 * trimming trailing zeros." This gives the greatest possible
+	 * precision in the decimal string, but offers the anomaly that
+	 * [expr 0.1] will be "0.10000000000000001".
+	 *
+	 * The second is "choose the decimal representation having at
+	 * most $tcl_precision digits of significance that is nearest
+	 * to the given number. If no such representation converts
+	 * exactly to the given number, choose the one that is closest,
+	 * breaking ties by rounding to even. If more than one such
+	 * representation converts exactly to the given number, choose
+	 * the shortest, breaking ties in favour of the nearest, breaking
+	 * remaining ties in favour of the one ending in an even digit."
+	 *
+	 * Tcl 8.4 implements the first of these, which gives rise to
+	 * anomalies in formatting:
+	 *
+	 * % expr 0.1
+	 * 0.10000000000000001
+	 * % expr 0.01
+	 * 0.01
+	 * % expr 1e-7
+	 * 9.9999999999999995e-08
+	 *
+	 * For human readability, it appears better to choose the second rule,
+	 * and let [expr 0.1] return 0.1. But for 8.4 compatibility, we
+	 * prefer the first (the recommended zero value for tcl_precision
+	 * avoids the problem entirely).
+	 *
+	 * Uncomment TCL_DD_SHORTEN_FLAG in the next call to prefer the
+	 * method that allows floating point values to be shortened if
+	 * it can be done without loss of precision.
+	 */
+
+	digits = TclDoubleDigits(value, *precisionPtr,
+				 TCL_DD_E_FORMAT /* | TCL_DD_SHORTEN_FLAG */, 
+				 &exponent, &signum, &end);
+    }
+	if (signum) {
+	    *dst++ = '-';
+	}
+    p = digits;
+    if (exponent < -4 || exponent > 16) {
+	/*
+	 * E format for numbers < 1e-3 or >= 1e17.
+	 */
+	
+	*dst++ = *p++;
+	c = *p;
+	if (c != '\0') {
+	    *dst++ = '.';
+	    while (c != '\0') {
+		*dst++ = c;
+		c = *++p;
+	    }
+	}
+	/* 
+	 * Tcl 8.4 appears to format with at least a two-digit exponent; \
+	 * preserve that behaviour when tcl_precision != 0
+	 */
+	if (*precisionPtr == 0) {
+	    sprintf(dst, "e%+d", exponent);
+	} else {
+	    sprintf(dst, "e%+03d", exponent);
+	}
+    } else {
+	/*
+	 * F format for others.
+	 */
+	
+	if (exponent < 0) {
+	    *dst++ = '0';
+	}
+	c = *p;
+	while (exponent-- >= 0) {
+	    if (c != '\0') {
+		*dst++ = c;
+		c = *++p;
+	    } else {
+		*dst++ = '0';
+	    }
+	}
+	*dst++ = '.';
+	if (c == '\0') {
+	    *dst++ = '0';
+	} else {
+	    while (++exponent < -1) {
+		*dst++ = '0';
+	    }
+	    while (c != '\0') {
+		*dst++ = c;
+		c = *++p;
+	    }
+	}
+	*dst++ = '\0';
     }
-    p[0] = '.';
-    p[1] = '0';
-    p[2] = 0;
+    ckfree(digits);
 }
 
 /*
@@ -1936,33 +2954,33 @@ Tcl_PrintDouble(interp, value, dst)
  *
  * TclPrecTraceProc --
  *
- *	This procedure is invoked whenever the variable "tcl_precision"
- *	is written.
+ *	This function is invoked whenever the variable "tcl_precision" is
+ *	written.
  *
  * Results:
- *	Returns NULL if all went well, or an error message if the
- *	new value for the variable doesn't make sense.
+ *	Returns NULL if all went well, or an error message if the new value
+ *	for the variable doesn't make sense.
  *
  * Side effects:
- *	If the new value doesn't make sense then this procedure
- *	undoes the effect of the variable modification.  Otherwise
- *	it modifies the format string that's used by Tcl_PrintDouble.
+ *	If the new value doesn't make sense then this function undoes the
+ *	effect of the variable modification. Otherwise it modifies the format
+ *	string that's used by Tcl_PrintDouble.
  *
  *----------------------------------------------------------------------
  */
 
 	/* ARGSUSED */
 char *
-TclPrecTraceProc(clientData, interp, name1, name2, flags)
-    ClientData clientData;	/* Not used. */
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *name1;		/* Name of variable. */
-    CONST char *name2;		/* Second part of variable name. */
-    int flags;			/* Information about what happened. */
+TclPrecTraceProc(
+    ClientData clientData,	/* Not used. */
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    CONST char *name1,		/* Name of variable. */
+    CONST char *name2,		/* Second part of variable name. */
+    int flags)			/* Information about what happened. */
 {
-    CONST char *value;
-    char *end;
+    Tcl_Obj* value;
     int prec;
+    int *precisionPtr = Tcl_GetThreadData(&precisionKey, (int) sizeof(int));
 
     /*
      * If the variable is unset, then recreate the trace.
@@ -1974,54 +2992,39 @@ TclPrecTraceProc(clientData, interp, name1, name2, flags)
 		    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES
 		    |TCL_TRACE_UNSETS, TclPrecTraceProc, clientData);
 	}
-	return (char *) NULL;
+	return NULL;
     }
 
     /*
-     * When the variable is read, reset its value from our shared
-     * value.  This is needed in case the variable was modified in
-     * some other interpreter so that this interpreter's value is
-     * out of date.
+     * When the variable is read, reset its value from our shared value. This
+     * is needed in case the variable was modified in some other interpreter
+     * so that this interpreter's value is out of date.
      */
 
-    Tcl_MutexLock(&precisionMutex);
 
     if (flags & TCL_TRACE_READS) {
-	Tcl_SetVar2(interp, name1, name2, precisionString,
+	Tcl_SetVar2Ex(interp, name1, name2, Tcl_NewIntObj(*precisionPtr),
 		flags & TCL_GLOBAL_ONLY);
-	Tcl_MutexUnlock(&precisionMutex);
-	return (char *) NULL;
+	return NULL;
     }
 
     /*
-     * The variable is being written.  Check the new value and disallow
-     * it if it isn't reasonable or if this is a safe interpreter (we
-     * don't want safe interpreters messing up the precision of other
-     * interpreters).
+     * The variable is being written. Check the new value and disallow it if
+     * it isn't reasonable or if this is a safe interpreter (we don't want
+     * safe interpreters messing up the precision of other interpreters).
      */
 
     if (Tcl_IsSafe(interp)) {
-	Tcl_SetVar2(interp, name1, name2, precisionString,
-		flags & TCL_GLOBAL_ONLY);
-	Tcl_MutexUnlock(&precisionMutex);
 	return "can't modify precision from a safe interpreter";
     }
-    value = Tcl_GetVar2(interp, name1, name2, flags & TCL_GLOBAL_ONLY);
-    if (value == NULL) {
-	value = "";
-    }
-    prec = strtoul(value, &end, 10);
-    if ((prec <= 0) || (prec > TCL_MAX_PREC) || (prec > 100) ||
-	    (end == value) || (*end != 0)) {
-	Tcl_SetVar2(interp, name1, name2, precisionString,
-		flags & TCL_GLOBAL_ONLY);
-	Tcl_MutexUnlock(&precisionMutex);
+    value = Tcl_GetVar2Ex(interp, name1, name2, flags & TCL_GLOBAL_ONLY);
+    if (value == NULL
+	    || Tcl_GetIntFromObj((Tcl_Interp*) NULL, value, &prec) != TCL_OK
+	    || prec < 0 || prec > TCL_MAX_PREC) {
 	return "improper value for precision";
     }
-    TclFormatInt(precisionString, prec);
-    sprintf(precisionFormat, "%%.%dg", prec);
-    Tcl_MutexUnlock(&precisionMutex);
-    return (char *) NULL;
+    *precisionPtr = prec;
+    return NULL;
 }
 
 /*
@@ -2029,9 +3032,8 @@ TclPrecTraceProc(clientData, interp, name1, name2, flags)
  *
  * TclNeedSpace --
  *
- *	This procedure checks to see whether it is appropriate to
- *	add a space before appending a new list element to an
- *	existing string.
+ *	This function checks to see whether it is appropriate to add a space
+ *	before appending a new list element to an existing string.
  *
  * Results:
  *	The return value is 1 if a space is appropriate, 0 otherwise.
@@ -2043,24 +3045,25 @@ TclPrecTraceProc(clientData, interp, name1, name2, flags)
  */
 
 int
-TclNeedSpace(start, end)
-    CONST char *start;		/* First character in string. */
-    CONST char *end;		/* End of string (place where space will
-				 * be added, if appropriate). */
+TclNeedSpace(
+    CONST char *start,		/* First character in string. */
+    CONST char *end)		/* End of string (place where space will be
+				 * added, if appropriate). */
 {
     /*
-     * A space is needed unless either
+     * A space is needed unless either:
      * (a) we're at the start of the string, or
      */
+
     if (end == start) {
 	return 0;
     }
 
     /*
-     * (b) we're at the start of a nested list-element, quoted with an
-     *     open curly brace; we can be nested arbitrarily deep, so long
-     *     as the first curly brace starts an element, so backtrack over
-     *     open curly braces that are trailing characters of the string; and
+     * (b) we're at the start of a nested list-element, quoted with an open
+     *	   curly brace; we can be nested arbitrarily deep, so long as the
+     *	   first curly brace starts an element, so backtrack over open curly
+     *	   braces that are trailing characters of the string; and
      */
 
     end = Tcl_UtfPrev(end, start);
@@ -2073,39 +3076,39 @@ TclNeedSpace(start, end)
 
     /*
      * (c) the trailing character of the string is already a list-element
-     *     separator (according to TclFindElement); that is, one of these
-     *     characters:
-     *     	\u0009	\t	TAB
-     *     	\u000A	\n	NEWLINE
-     *     	\u000B	\v	VERTICAL TAB
-     *     	\u000C	\f	FORM FEED
-     *     	\u000D	\r	CARRIAGE RETURN
-     *     	\u0020		SPACE
-     *     with the condition that the penultimate character is not a
-     *     backslash.
+     *	   separator (according to TclFindElement); that is, one of these
+     *	   characters:
+     *		\u0009	\t	TAB
+     *		\u000A	\n	NEWLINE
+     *		\u000B	\v	VERTICAL TAB
+     *		\u000C	\f	FORM FEED
+     *		\u000D	\r	CARRIAGE RETURN
+     *		\u0020		SPACE
+     *	   with the condition that the penultimate character is not a
+     *	   backslash.
      */
 
     if (*end > 0x20) {
 	/*
-	 * Performance tweak.  All ASCII spaces are <= 0x20. So get
-	 * a quick answer for most characters before comparing against
-	 * all spaces in the switch below.
+	 * Performance tweak. All ASCII spaces are <= 0x20. So get a quick
+	 * answer for most characters before comparing against all spaces in
+	 * the switch below.
 	 *
-	 * NOTE: Remove this if other Unicode spaces ever get accepted
-	 * as list-element separators.
+	 * NOTE: Remove this if other Unicode spaces ever get accepted as
+	 * list-element separators.
 	 */
 	return 1;
     }
     switch (*end) {
-	case ' ':
-        case '\t':
-        case '\n':
-        case '\r':
-        case '\v':
-        case '\f':
-	    if ((end == start) || (end[-1] != '\\')) {
-		return 0;
-	    }
+    case ' ':
+    case '\t':
+    case '\n':
+    case '\r':
+    case '\v':
+    case '\f':
+	if ((end == start) || (end[-1] != '\\')) {
+	    return 0;
+	}
     }
     return 1;
 }
@@ -2120,7 +3123,9 @@ TclNeedSpace(start, end)
  *	inserted at the start of the buffer. A null character is inserted at
  *	the end of the formatted characters. It is the caller's
  *	responsibility to ensure that enough storage is available. This
- *	procedure has the effect of sprintf(buffer, "%d", n) but is faster.
+ *	procedure has the effect of sprintf(buffer, "%ld", n) but is faster
+ *	as proven in benchmarks.  This is key to UpdateStringOfInt, which
+ *	is a common path for a lot of code (e.g. int-indexed arrays).
  *
  * Results:
  *	An integer representing the number of characters formatted, not
@@ -2162,8 +3167,7 @@ TclFormatInt(buffer, n)
 
     intVal = -n;			/* [Bug 3390638] Workaround for*/
     if (n == -n || intVal == n) {	/* broken compiler optimizers. */
-	sprintf(buffer, "%ld", n);
-	return strlen(buffer);
+	return sprintf(buffer, "%ld", n);
     }
 
     /*
@@ -2199,133 +3203,119 @@ TclFormatInt(buffer, n)
 /*
  *----------------------------------------------------------------------
  *
- * TclLooksLikeInt --
- *
- *	This procedure decides whether the leading characters of a
- *	string look like an integer or something else (such as a
- *	floating-point number or string).
- *
- * Results:
- *	The return value is 1 if the leading characters of p look
- *	like a valid Tcl integer.  If they look like a floating-point
- *	number (e.g. "e01" or "2.4"), or if they don't look like a
- *	number at all, then 0 is returned.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclLooksLikeInt(bytes, length)
-    register CONST char *bytes;	/* Points to first byte of the string. */
-    int length;			/* Number of bytes in the string. If < 0
-				 * bytes up to the first null byte are
-				 * considered (if they may appear in an 
-				 * integer). */
-{
-    register CONST char *p;
-
-    if ((bytes == NULL) && (length > 0)) {
-	Tcl_Panic("TclLooksLikeInt: cannot scan %d bytes from NULL", length);
-    }
-
-    if (length < 0) {
-        length = (bytes? strlen(bytes) : 0);
-    }
-
-    p = bytes;
-    while (length && isspace(UCHAR(*p))) { /* INTL: ISO space. */
-	length--; p++;
-    }
-    if (length == 0) {
-        return 0;
-    }
-    if ((*p == '+') || (*p == '-')) {
-        p++; length--;
-    }
-
-    return (0 != TclParseInteger(p, length));
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * TclGetIntForIndex --
  *
- *	This procedure returns an integer corresponding to the list index
- *	held in a Tcl object. The Tcl object's value is expected to be
- *	either an integer or a string of the form "end([+-]integer)?". 
+ *	This function returns an integer corresponding to the list index held
+ *	in a Tcl object. The Tcl object's value is expected to be in the
+ *	format integer([+-]integer)? or the format end([+-]integer)?.
  *
  * Results:
  *	The return value is normally TCL_OK, which means that the index was
- *	successfully stored into the location referenced by "indexPtr".  If
- *	the Tcl object referenced by "objPtr" has the value "end", the
- *	value stored is "endValue". If "objPtr"s values is not of the form
- *	"end([+-]integer)?" and
- *	can not be converted to an integer, TCL_ERROR is returned and, if
- *	"interp" is non-NULL, an error message is left in the interpreter's
- *	result object.
+ *	successfully stored into the location referenced by "indexPtr". If the
+ *	Tcl object referenced by "objPtr" has the value "end", the value
+ *	stored is "endValue". If "objPtr"s values is not of one of the
+ *	expected formats, TCL_ERROR is returned and, if "interp" is non-NULL,
+ *	an error message is left in the interpreter's result object.
  *
  * Side effects:
- *	The object referenced by "objPtr" might be converted to an
- *	integer, wide integer, or end-based-index object.
+ *	The object referenced by "objPtr" might be converted to an integer,
+ *	wide integer, or end-based-index object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclGetIntForIndex(interp, objPtr, endValue, indexPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. 
-				 * If NULL, then no error message is left
-				 * after errors. */
-    Tcl_Obj *objPtr;		/* Points to an object containing either
-				 * "end" or an integer. */
-    int endValue;		/* The value to be stored at "indexPtr" if
+TclGetIntForIndex(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. If
+				 * NULL, then no error message is left after
+				 * errors. */
+    Tcl_Obj *objPtr,		/* Points to an object containing either "end"
+				 * or an integer. */
+    int endValue,		/* The value to be stored at "indexPtr" if
 				 * "objPtr" holds "end". */
-    int *indexPtr;		/* Location filled in with an integer
+    int *indexPtr)		/* Location filled in with an integer
 				 * representing an index. */
 {
-    if (Tcl_GetIntFromObj(NULL, objPtr, indexPtr) == TCL_OK) {
+    int length;
+    char *opPtr, *bytes;
+
+    if (TclGetIntFromObj(NULL, objPtr, indexPtr) == TCL_OK) {
 	return TCL_OK;
     }
 
     if (SetEndOffsetFromAny(NULL, objPtr) == TCL_OK) {
 	/*
-	 * If the object is already an offset from the end of the
-	 * list, or can be converted to one, use it.
+	 * If the object is already an offset from the end of the list, or can
+	 * be converted to one, use it.
 	 */
 
 	*indexPtr = endValue + objPtr->internalRep.longValue;
+	return TCL_OK;
+    }
+
+    bytes = TclGetStringFromObj(objPtr, &length);
+
+    /*
+     * Leading whitespace is acceptable in an index.
+     */
+
+    while (length && TclIsSpaceProc(*bytes)) {
+	bytes++;
+	length--;
+    }
+
+    if (TclParseNumber(NULL, NULL, NULL, bytes, length, (const char **)&opPtr,
+	    TCL_PARSE_INTEGER_ONLY | TCL_PARSE_NO_WHITESPACE) == TCL_OK) {
+	int code, first, second;
+	char savedOp = *opPtr;
+
+	if ((savedOp != '+') && (savedOp != '-')) {
+	    goto parseError;
+	}
+	if (TclIsSpaceProc(opPtr[1])) {
+	    goto parseError;
+	}
+	*opPtr = '\0';
+	code = Tcl_GetInt(interp, bytes, &first);
+	*opPtr = savedOp;
+	if (code == TCL_ERROR) {
+	    goto parseError;
+	}
+	if (TCL_ERROR == Tcl_GetInt(interp, opPtr+1, &second)) {
+	    goto parseError;
+	}
+	if (savedOp == '+') {
+	    *indexPtr = first + second;
+	} else {
+	    *indexPtr = first - second;
+	}
+	return TCL_OK;
+    }
+
+    /*
+     * Report a parse error.
+     */
+
+  parseError:
+    if (interp != NULL) {
+	char *bytes = Tcl_GetString(objPtr);
 
-    } else {
 	/*
-	 * Report a parse error.
+	 * The result might not be empty; this resets it which should be both
+	 * a cheap operation, and of little problem because this is an
+	 * error-generation path anyway.
 	 */
 
-	if (interp != NULL) {
-	    char *bytes = Tcl_GetString(objPtr);
-	    /*
-	     * The result might not be empty; this resets it which
-	     * should be both a cheap operation, and of little problem
-	     * because this is an error-generation path anyway.
-	     */
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-				   "bad index \"", bytes,
-				   "\": must be integer or end?-integer?",
-				   (char *) NULL);
-	    if (!strncmp(bytes, "end-", 3)) {
-		bytes += 3;
-	    }
-	    TclCheckBadOctal(interp, bytes);
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "bad index \"", bytes,
+		"\": must be integer?[+-]integer? or end?[+-]integer?", NULL);
+	if (!strncmp(bytes, "end-", 4)) {
+	    bytes += 4;
 	}
-
-	return TCL_ERROR;
+	TclCheckBadOctal(interp, bytes);
     }
-	    
-    return TCL_OK;
+
+    return TCL_ERROR;
 }
 
 /*
@@ -2342,16 +3332,15 @@ TclGetIntForIndex(interp, objPtr, endValue, indexPtr)
  * Side effects:
  *	Stores a valid string in the object's string rep.
  *
- * This procedure does NOT free any earlier string rep.  If it is
- * called on an object that already has a valid string rep, it will
- * leak memory.
+ * This function does NOT free any earlier string rep. If it is called on an
+ * object that already has a valid string rep, it will leak memory.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UpdateStringOfEndOffset(objPtr)
-    register Tcl_Obj* objPtr;
+UpdateStringOfEndOffset(
+    register Tcl_Obj* objPtr)
 {
     char buffer[TCL_INTEGER_SPACE + sizeof("end") + 1];
     register int len;
@@ -2362,8 +3351,8 @@ UpdateStringOfEndOffset(objPtr)
 	buffer[len++] = '-';
 	len += TclFormatInt(buffer+len, -(objPtr->internalRep.longValue));
     }
-    objPtr->bytes = ckalloc((unsigned) (len+1));
-    strcpy(objPtr->bytes, buffer);
+    objPtr->bytes = ckalloc((unsigned) len+1);
+    memcpy(objPtr->bytes, buffer, (unsigned) len+1);
     objPtr->length = len;
 }
 
@@ -2372,100 +3361,104 @@ UpdateStringOfEndOffset(objPtr)
  *
  * SetEndOffsetFromAny --
  *
- *	Look for a string of the form "end-offset" and convert it
- *	to an internal representation holding the offset.
+ *	Look for a string of the form "end[+-]offset" and convert it to an
+ *	internal representation holding the offset.
  *
  * Results:
  *	Returns TCL_OK if ok, TCL_ERROR if the string was badly formed.
  *
  * Side effects:
- *	If interp is not NULL, stores an error message in the
- *	interpreter result.
+ *	If interp is not NULL, stores an error message in the interpreter
+ *	result.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetEndOffsetFromAny(interp, objPtr)
-     Tcl_Interp* interp;	/* Tcl interpreter or NULL */
-     Tcl_Obj* objPtr;		/* Pointer to the object to parse */
+SetEndOffsetFromAny(
+    Tcl_Interp *interp,		/* Tcl interpreter or NULL */
+    Tcl_Obj *objPtr)		/* Pointer to the object to parse */
 {
     int offset;			/* Offset in the "end-offset" expression */
-    Tcl_ObjType* oldTypePtr = objPtr->typePtr;
-				/* Old internal rep type of the object */
     register char* bytes;	/* String rep of the object */
     int length;			/* Length of the object's string rep */
 
-    /* If it's already the right type, we're fine. */
+    /*
+     * If it's already the right type, we're fine.
+     */
 
     if (objPtr->typePtr == &tclEndOffsetType) {
 	return TCL_OK;
     }
 
-    /* Check for a string rep of the right form. */
+    /*
+     * Check for a string rep of the right form.
+     */
 
-    bytes = Tcl_GetStringFromObj(objPtr, &length);
+    bytes = TclGetStringFromObj(objPtr, &length);
     if ((*bytes != 'e') || (strncmp(bytes, "end",
 	    (size_t)((length > 3) ? 3 : length)) != 0)) {
 	if (interp != NULL) {
 	    Tcl_ResetResult(interp);
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-				   "bad index \"", bytes,
-				   "\": must be end?-integer?",
-				   (char*) NULL);
+	    Tcl_AppendResult(interp, "bad index \"", bytes,
+		    "\": must be end?[+-]integer?", NULL);
 	}
 	return TCL_ERROR;
     }
 
-    /* Convert the string rep */
+    /*
+     * Convert the string rep.
+     */
 
     if (length <= 3) {
 	offset = 0;
-    } else if ((length > 4) && (bytes[3] == '-')) {
+    } else if ((length > 4) && ((bytes[3] == '-') || (bytes[3] == '+'))) {
 	/*
-	 * This is our limited string expression evaluator.  Pass everything
+	 * This is our limited string expression evaluator. Pass everything
 	 * after "end-" to Tcl_GetInt, then reverse for offset.
 	 */
+
+	if (TclIsSpaceProc(bytes[4])) {
+	    return TCL_ERROR;
+	}
 	if (Tcl_GetInt(interp, bytes+4, &offset) != TCL_OK) {
 	    return TCL_ERROR;
 	}
-	offset = -offset;
+	if (bytes[3] == '-') {
+	    offset = -offset;
+	}
     } else {
 	/*
-	 * Conversion failed.  Report the error.
+	 * Conversion failed. Report the error.
 	 */
+
 	if (interp != NULL) {
 	    Tcl_ResetResult(interp);
-	    Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
-				   "bad index \"", bytes,
-				   "\": must be integer or end?-integer?",
-				   (char *) NULL);
+	    Tcl_AppendResult(interp, "bad index \"", bytes,
+		    "\": must be end?[+-]integer?", NULL);
 	}
 	return TCL_ERROR;
     }
 
     /*
-     * The conversion succeeded. Free the old internal rep and set
-     * the new one.
+     * The conversion succeeded. Free the old internal rep and set the new
+     * one.
      */
 
-    if ((oldTypePtr != NULL) && (oldTypePtr->freeIntRepProc != NULL)) {
-	oldTypePtr->freeIntRepProc(objPtr);
-    }
-    
+    TclFreeIntRep(objPtr);
     objPtr->internalRep.longValue = offset;
     objPtr->typePtr = &tclEndOffsetType;
 
     return TCL_OK;
-}    
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * TclCheckBadOctal --
  *
- *	This procedure checks for a bad octal value and appends a
- *	meaningful error to the interp's result.
+ *	This function checks for a bad octal value and appends a meaningful
+ *	error to the interp's result.
  *
  * Results:
  *	1 if the argument was a bad octal, else 0.
@@ -2477,41 +3470,48 @@ SetEndOffsetFromAny(interp, objPtr)
  */
 
 int
-TclCheckBadOctal(interp, value)
-    Tcl_Interp *interp;		/* Interpreter to use for error reporting. 
-				 * If NULL, then no error message is left
-				 * after errors. */
-    CONST char *value;		/* String to check. */
+TclCheckBadOctal(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. If
+				 * NULL, then no error message is left after
+				 * errors. */
+    CONST char *value)		/* String to check. */
 {
     register CONST char *p = value;
 
     /*
-     * A frequent mistake is invalid octal values due to an unwanted
-     * leading zero. Try to generate a meaningful error message.
+     * A frequent mistake is invalid octal values due to an unwanted leading
+     * zero. Try to generate a meaningful error message.
      */
 
-    while (isspace(UCHAR(*p))) {	/* INTL: ISO space. */
+    while (TclIsSpaceProc(*p)) {
 	p++;
     }
     if (*p == '+' || *p == '-') {
 	p++;
     }
     if (*p == '0') {
+	if ((p[1] == 'o') || p[1] == 'O') {
+	    p+=2;
+	}
 	while (isdigit(UCHAR(*p))) {	/* INTL: digit. */
 	    p++;
 	}
-	while (isspace(UCHAR(*p))) {	/* INTL: ISO space. */
+	while (TclIsSpaceProc(*p)) {
 	    p++;
 	}
 	if (*p == '\0') {
-	    /* Reached end of string */
+	    /*
+	     * Reached end of string.
+	     */
+
 	    if (interp != NULL) {
 		/*
-		 * Don't reset the result here because we want this result
-		 * to be added to an existing error message as extra info.
+		 * Don't reset the result here because we want this result to
+		 * be added to an existing error message as extra info.
 		 */
+
 		Tcl_AppendResult(interp, " (looks like invalid octal number)",
-			(char *) NULL);
+			NULL);
 	    }
 	    return 1;
 	}
@@ -2522,28 +3522,353 @@ TclCheckBadOctal(interp, value)
 /*
  *----------------------------------------------------------------------
  *
+ * ClearHash --
+ *
+ *	Remove all the entries in the hash table *tablePtr.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+ClearHash(
+    Tcl_HashTable *tablePtr)
+{
+    Tcl_HashSearch search;
+    Tcl_HashEntry *hPtr;
+
+    for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr != NULL;
+	    hPtr = Tcl_NextHashEntry(&search)) {
+	Tcl_Obj *objPtr = (Tcl_Obj *) Tcl_GetHashValue(hPtr);
+	Tcl_DecrRefCount(objPtr);
+	Tcl_DeleteHashEntry(hPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * GetThreadHash --
+ *
+ *	Get a thread-specific (Tcl_HashTable *) associated with a thread data
+ *	key.
+ *
+ * Results:
+ *	The Tcl_HashTable * corresponding to *keyPtr.
+ *
+ * Side effects:
+ *	The first call on a keyPtr in each thread creates a new Tcl_HashTable,
+ *	and registers a thread exit handler to dispose of it.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static Tcl_HashTable *
+GetThreadHash(
+    Tcl_ThreadDataKey *keyPtr)
+{
+    Tcl_HashTable **tablePtrPtr = (Tcl_HashTable **)
+	    Tcl_GetThreadData(keyPtr, (int) sizeof(Tcl_HashTable *));
+
+    if (NULL == *tablePtrPtr) {
+	*tablePtrPtr = (Tcl_HashTable *)ckalloc(sizeof(Tcl_HashTable));
+	Tcl_CreateThreadExitHandler(FreeThreadHash, (ClientData)*tablePtrPtr);
+	Tcl_InitHashTable(*tablePtrPtr, TCL_ONE_WORD_KEYS);
+    }
+    return *tablePtrPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeThreadHash --
+ *
+ *	Thread exit handler used by GetThreadHash to dispose of a thread hash
+ *	table.
+ *
+ * Side effects:
+ *	Frees a Tcl_HashTable.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeThreadHash(
+    ClientData clientData)
+{
+    Tcl_HashTable *tablePtr = (Tcl_HashTable *) clientData;
+
+    ClearHash(tablePtr);
+    Tcl_DeleteHashTable(tablePtr);
+    ckfree((char *) tablePtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FreeProcessGlobalValue --
+ *
+ *	Exit handler used by Tcl(Set|Get)ProcessGlobalValue to cleanup a
+ *	ProcessGlobalValue at exit.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+FreeProcessGlobalValue(
+    ClientData clientData)
+{
+    ProcessGlobalValue *pgvPtr = (ProcessGlobalValue *) clientData;
+
+    pgvPtr->epoch++;
+    pgvPtr->numBytes = 0;
+    ckfree(pgvPtr->value);
+    pgvPtr->value = NULL;
+    if (pgvPtr->encoding) {
+	Tcl_FreeEncoding(pgvPtr->encoding);
+	pgvPtr->encoding = NULL;
+    }
+    Tcl_MutexFinalize(&pgvPtr->mutex);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetProcessGlobalValue --
+ *
+ *	Utility routine to set a global value shared by all threads in the
+ *	process while keeping a thread-local copy as well.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclSetProcessGlobalValue(
+    ProcessGlobalValue *pgvPtr,
+    Tcl_Obj *newValue,
+    Tcl_Encoding encoding)
+{
+    CONST char *bytes;
+    Tcl_HashTable *cacheMap;
+    Tcl_HashEntry *hPtr;
+    int dummy;
+
+    Tcl_MutexLock(&pgvPtr->mutex);
+
+    /*
+     * Fill the global string value.
+     */
+
+    pgvPtr->epoch++;
+    if (NULL != pgvPtr->value) {
+	ckfree(pgvPtr->value);
+    } else {
+	Tcl_CreateExitHandler(FreeProcessGlobalValue, (ClientData) pgvPtr);
+    }
+    bytes = Tcl_GetStringFromObj(newValue, &pgvPtr->numBytes);
+    pgvPtr->value = ckalloc((unsigned) pgvPtr->numBytes + 1);
+    memcpy(pgvPtr->value, bytes, (unsigned) pgvPtr->numBytes + 1);
+    if (pgvPtr->encoding) {
+	Tcl_FreeEncoding(pgvPtr->encoding);
+    }
+    pgvPtr->encoding = encoding;
+
+    /*
+     * Fill the local thread copy directly with the Tcl_Obj value to avoid
+     * loss of the intrep. Increment newValue refCount early to handle case
+     * where we set a PGV to itself.
+     */
+
+    Tcl_IncrRefCount(newValue);
+    cacheMap = GetThreadHash(&pgvPtr->key);
+    ClearHash(cacheMap);
+    hPtr = Tcl_CreateHashEntry(cacheMap,
+	    (char *) INT2PTR(pgvPtr->epoch), &dummy);
+    Tcl_SetHashValue(hPtr, (ClientData) newValue);
+    Tcl_MutexUnlock(&pgvPtr->mutex);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetProcessGlobalValue --
+ *
+ *	Retrieve a global value shared among all threads of the process,
+ *	preferring a thread-local copy as long as it remains valid.
+ *
+ * Results:
+ *	Returns a (Tcl_Obj *) that holds a copy of the global value.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclGetProcessGlobalValue(
+    ProcessGlobalValue *pgvPtr)
+{
+    Tcl_Obj *value = NULL;
+    Tcl_HashTable *cacheMap;
+    Tcl_HashEntry *hPtr;
+    int epoch = pgvPtr->epoch;
+
+    if (pgvPtr->encoding) {
+	Tcl_Encoding current = Tcl_GetEncoding(NULL, NULL);
+
+	if (pgvPtr->encoding != current) {
+	    /*
+	     * The system encoding has changed since the master string value
+	     * was saved. Convert the master value to be based on the new
+	     * system encoding.
+	     */
+
+	    Tcl_DString native, newValue;
+
+	    Tcl_MutexLock(&pgvPtr->mutex);
+	    pgvPtr->epoch++;
+	    epoch = pgvPtr->epoch;
+	    Tcl_UtfToExternalDString(pgvPtr->encoding, pgvPtr->value,
+		    pgvPtr->numBytes, &native);
+	    Tcl_ExternalToUtfDString(current, Tcl_DStringValue(&native),
+	    Tcl_DStringLength(&native), &newValue);
+	    Tcl_DStringFree(&native);
+	    ckfree(pgvPtr->value);
+	    pgvPtr->value = ckalloc((unsigned int)
+		    Tcl_DStringLength(&newValue) + 1);
+	    memcpy(pgvPtr->value, Tcl_DStringValue(&newValue),
+		    (size_t) Tcl_DStringLength(&newValue) + 1);
+	    Tcl_DStringFree(&newValue);
+	    Tcl_FreeEncoding(pgvPtr->encoding);
+	    pgvPtr->encoding = current;
+	    Tcl_MutexUnlock(&pgvPtr->mutex);
+	} else {
+	    Tcl_FreeEncoding(current);
+	}
+    }
+    cacheMap = GetThreadHash(&pgvPtr->key);
+    hPtr = Tcl_FindHashEntry(cacheMap, (char *) INT2PTR(epoch));
+    if (NULL == hPtr) {
+	int dummy;
+
+	/*
+	 * No cache for the current epoch - must be a new one.
+	 *
+	 * First, clear the cacheMap, as anything in it must refer to some
+	 * expired epoch.
+	 */
+
+	ClearHash(cacheMap);
+
+	/*
+	 * If no thread has set the shared value, call the initializer.
+	 */
+
+	Tcl_MutexLock(&pgvPtr->mutex);
+	if ((NULL == pgvPtr->value) && (pgvPtr->proc)) {
+	    pgvPtr->epoch++;
+	    (*(pgvPtr->proc))(&pgvPtr->value, &pgvPtr->numBytes,
+		    &pgvPtr->encoding);
+	    if (pgvPtr->value == NULL) {
+		Tcl_Panic("PGV Initializer did not initialize");
+	    }
+	    Tcl_CreateExitHandler(FreeProcessGlobalValue, (ClientData)pgvPtr);
+	}
+
+	/*
+	 * Store a copy of the shared value in our epoch-indexed cache.
+	 */
+
+	value = Tcl_NewStringObj(pgvPtr->value, pgvPtr->numBytes);
+	hPtr = Tcl_CreateHashEntry(cacheMap,
+		(char *) INT2PTR(pgvPtr->epoch), &dummy);
+	Tcl_MutexUnlock(&pgvPtr->mutex);
+	Tcl_SetHashValue(hPtr, (ClientData) value);
+	Tcl_IncrRefCount(value);
+    }
+    return (Tcl_Obj *) Tcl_GetHashValue(hPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclSetObjNameOfExecutable --
+ *
+ *	This function stores the absolute pathname of the executable file
+ *	(normally as computed by TclpFindExecutable).
+ *
+ * Results:
+ * 	None.
+ *
+ * Side effects:
+ *	Stores the executable name.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TclSetObjNameOfExecutable(
+    Tcl_Obj *name,
+    Tcl_Encoding encoding)
+{
+    TclSetProcessGlobalValue(&executableName, name, encoding);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetObjNameOfExecutable --
+ *
+ *	This function retrieves the absolute pathname of the application in
+ *	which the Tcl library is running, usually as previously stored by
+ *	TclpFindExecutable(). This function call is the C API equivalent to
+ *	the "info nameofexecutable" command.
+ *
+ * Results:
+ *	A pointer to an "fsPath" Tcl_Obj, or to an empty Tcl_Obj if the
+ *	pathname of the application is unknown.
+ *
+ * Side effects:
+ * 	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclGetObjNameOfExecutable(void)
+{
+    return TclGetProcessGlobalValue(&executableName);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * Tcl_GetNameOfExecutable --
  *
- *	This procedure simply returns a pointer to the internal full
- *	path name of the executable file as computed by
- *	Tcl_FindExecutable.  This procedure call is the C API
- *	equivalent to the "info nameofexecutable" command.
+ *	This function retrieves the absolute pathname of the application in
+ *	which the Tcl library is running, and returns it in string form.
+ *
+ * 	The returned string belongs to Tcl and should be copied if the caller
+ * 	plans to keep it, to guard against it becoming invalid.
  *
  * Results:
- *	A pointer to the internal string or NULL if the internal full
- *	path name has not been computed or unknown.
+ *	A pointer to the internal string or NULL if the internal full path
+ *	name has not been computed or unknown.
  *
  * Side effects:
- *	The object referenced by "objPtr" might be converted to an
- *	integer object.
+ * 	None.
  *
  *----------------------------------------------------------------------
  */
 
 CONST char *
-Tcl_GetNameOfExecutable()
+Tcl_GetNameOfExecutable(void)
 {
-    return tclExecutableName;
+    int numBytes;
+    const char *bytes =
+	    Tcl_GetStringFromObj(TclGetObjNameOfExecutable(), &numBytes);
+
+    if (numBytes == 0) {
+	return NULL;
+    }
+    return bytes;
 }
 
 /*
@@ -2551,7 +3876,9 @@ Tcl_GetNameOfExecutable()
  *
  * TclpGetTime --
  *
- *	Deprecated synonym for Tcl_GetTime.
+ *	Deprecated synonym for Tcl_GetTime. This function is provided for the
+ *	benefit of extensions written before Tcl_GetTime was exported from the
+ *	library.
  *
  * Results:
  *	None.
@@ -2559,15 +3886,265 @@ Tcl_GetNameOfExecutable()
  * Side effects:
  *	Stores current time in the buffer designated by "timePtr"
  *
- * This procedure is provided for the benefit of extensions written
- * before Tcl_GetTime was exported from the library.
- *
  *----------------------------------------------------------------------
  */
 
 void
-TclpGetTime(timePtr)
-    Tcl_Time* timePtr;
+TclpGetTime(
+    Tcl_Time *timePtr)
 {
     Tcl_GetTime(timePtr);
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclGetPlatform --
+ *
+ *	This is a kludge that allows the test library to get access the
+ *	internal tclPlatform variable.
+ *
+ * Results:
+ *	Returns a pointer to the tclPlatform variable.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TclPlatformType *
+TclGetPlatform(void)
+{
+    return &tclPlatform;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclReToGlob --
+ *
+ *	Attempt to convert a regular expression to an equivalent glob pattern.
+ *
+ * Results:
+ *	Returns TCL_OK on success, TCL_ERROR on failure. If interp is not
+ *	NULL, an error message is placed in the result. On success, the
+ *	DString will contain an exact equivalent glob pattern. The caller is
+ *	responsible for calling Tcl_DStringFree on success. If exactPtr is not
+ *	NULL, it will be 1 if an exact match qualifies.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclReToGlob(
+    Tcl_Interp *interp,
+    const char *reStr,
+    int reStrLen,
+    Tcl_DString *dsPtr,
+    int *exactPtr)
+{
+    int anchorLeft, anchorRight, lastIsStar, numStars;
+    char *dsStr, *dsStrStart, *msg;
+    const char *p, *strEnd;
+
+    strEnd = reStr + reStrLen;
+    Tcl_DStringInit(dsPtr);
+
+    /*
+     * "***=xxx" == "*xxx*", watch for glob-sensitive chars.
+     */
+
+    if ((reStrLen >= 4) && (memcmp("***=", reStr, 4) == 0)) {
+	/*
+	 * At most, the glob pattern has length 2*reStrLen + 2 to
+	 * backslash escape every character and have * at each end.
+	 */
+	Tcl_DStringSetLength(dsPtr, 2*reStrLen + 2);
+	dsStr = dsStrStart = Tcl_DStringValue(dsPtr);
+	*dsStr++ = '*';
+	for (p = reStr + 4; p < strEnd; p++) {
+	    switch (*p) {
+	    case '\\': case '*': case '[': case ']': case '?':
+		/* Only add \ where necessary for glob */
+		*dsStr++ = '\\';
+		/* fall through */
+	    default:
+		*dsStr++ = *p;
+		break;
+	    }
+	}
+	*dsStr++ = '*';
+	Tcl_DStringSetLength(dsPtr, dsStr - dsStrStart);
+	if (exactPtr) {
+	    *exactPtr = 0;
+	}
+	return TCL_OK;
+    }
+
+    /*
+     * At most, the glob pattern has length reStrLen + 2 to account
+     * for possible * at each end.
+     */
+
+    Tcl_DStringSetLength(dsPtr, reStrLen + 2);
+    dsStr = dsStrStart = Tcl_DStringValue(dsPtr);
+
+    /*
+     * Check for anchored REs (ie ^foo$), so we can use string equal if
+     * possible. Do not alter the start of str so we can free it correctly.
+     *
+     * Keep track of the last char being an unescaped star to prevent
+     * multiple instances.  Simpler than checking that the last star
+     * may be escaped.
+     */
+
+    msg = NULL;
+    p = reStr;
+    anchorRight = 0;
+    lastIsStar = 0;
+    numStars = 0;
+
+    if (*p == '^') {
+	anchorLeft = 1;
+	p++;
+    } else {
+	anchorLeft = 0;
+	*dsStr++ = '*';
+	lastIsStar = 1;
+    }
+
+    for ( ; p < strEnd; p++) {
+	switch (*p) {
+	case '\\':
+	    p++;
+	    switch (*p) {
+	    case 'a':
+		*dsStr++ = '\a';
+		break;
+	    case 'b':
+		*dsStr++ = '\b';
+		break;
+	    case 'f':
+		*dsStr++ = '\f';
+		break;
+	    case 'n':
+		*dsStr++ = '\n';
+		break;
+	    case 'r':
+		*dsStr++ = '\r';
+		break;
+	    case 't':
+		*dsStr++ = '\t';
+		break;
+	    case 'v':
+		*dsStr++ = '\v';
+		break;
+	    case 'B': case '\\':
+		*dsStr++ = '\\';
+		*dsStr++ = '\\';
+		anchorLeft = 0; /* prevent exact match */
+		break;
+	    case '*': case '[': case ']': case '?':
+		/* Only add \ where necessary for glob */
+		*dsStr++ = '\\';
+		anchorLeft = 0; /* prevent exact match */
+		/* fall through */
+	    case '{': case '}': case '(': case ')': case '+':
+	    case '.': case '|': case '^': case '$':
+		*dsStr++ = *p;
+		break;
+	    default:
+		msg = "invalid escape sequence";
+		goto invalidGlob;
+	    }
+	    break;
+	case '.':
+	    anchorLeft = 0; /* prevent exact match */
+	    if (p+1 < strEnd) {
+		if (p[1] == '*') {
+		    p++;
+		    if (!lastIsStar) {
+			*dsStr++ = '*';
+			lastIsStar = 1;
+			numStars++;
+		    }
+		    continue;
+		} else if (p[1] == '+') {
+		    p++;
+		    *dsStr++ = '?';
+		    *dsStr++ = '*';
+		    lastIsStar = 1;
+		    numStars++;
+		    continue;
+		}
+	    }
+	    *dsStr++ = '?';
+	    break;
+	case '$':
+	    if (p+1 != strEnd) {
+		msg = "$ not anchor";
+		goto invalidGlob;
+	    }
+	    anchorRight = 1;
+	    break;
+	case '*': case '+': case '?': case '|': case '^':
+	case '{': case '}': case '(': case ')': case '[': case ']':
+	    msg = "unhandled RE special char";
+	    goto invalidGlob;
+	    break;
+	default:
+	    *dsStr++ = *p;
+	    break;
+	}
+	lastIsStar = 0;
+    }
+    if (numStars > 1) {
+	/*
+	 * Heuristic: if >1 non-anchoring *, the risk is large that glob
+	 * matching is slower than the RE engine, so report invalid.
+	 */
+	msg = "excessive recursive glob backtrack potential";
+	goto invalidGlob;
+    }
+
+    if (!anchorRight && !lastIsStar) {
+	*dsStr++ = '*';
+    }
+    Tcl_DStringSetLength(dsPtr, dsStr - dsStrStart);
+
+    if (exactPtr) {
+	*exactPtr = (anchorLeft && anchorRight);
+    }
+
+#if 0
+    fprintf(stderr, "INPUT RE '%.*s' OUTPUT GLOB '%s' anchor %d:%d \n",
+	    reStrLen, reStr,
+	    Tcl_DStringValue(dsPtr), anchorLeft, anchorRight);
+    fflush(stderr);
+#endif
+    return TCL_OK;
+
+  invalidGlob:
+#if 0
+    fprintf(stderr, "INPUT RE '%.*s' NO OUTPUT GLOB %s (%c)\n",
+	    reStrLen, reStr, msg, *p);
+    fflush(stderr);
+#endif
+    if (interp != NULL) {
+	Tcl_AppendResult(interp, msg, NULL);
+    }
+    Tcl_DStringFree(dsPtr);
+    return TCL_ERROR;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tclVar.c b/generic/tclVar.c
index c029877..f4f83a4 100644
--- a/generic/tclVar.c
+++ b/generic/tclVar.c
@@ -1,8 +1,8 @@
-/* 
+/*
  * tclVar.c --
  *
- *	This file contains routines that implement Tcl variables
- *	(both scalars and arrays).
+ *	This file contains routines that implement Tcl variables (both scalars
+ *	and arrays).
  *
  *	The implementation of arrays is modelled after an initial
  *	implementation by Mark Diekhans and Karl Lehenbauer.
@@ -10,147 +10,355 @@
  * Copyright (c) 1987-1994 The Regents of the University of California.
  * Copyright (c) 1994-1997 Sun Microsystems, Inc.
  * Copyright (c) 1998-1999 by Scriptics Corporation.
- * Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
+ * Copyright (c) 2001 by Kevin B. Kenny. All rights reserved.
+ * Copyright (c) 2007 Miguel Sofer
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
 #include "tclInt.h"
-#include "tclPort.h"
 
+/*
+ * Prototypes for the variable hash key methods.
+ */
+
+static Tcl_HashEntry *	AllocVarEntry(Tcl_HashTable *tablePtr, void *keyPtr);
+static void		FreeVarEntry(Tcl_HashEntry *hPtr);
+static int		CompareVarKeys(void *keyPtr, Tcl_HashEntry *hPtr);
+static unsigned int	HashVarKey(Tcl_HashTable *tablePtr, void *keyPtr);
+
+static Tcl_HashKeyType tclVarHashKeyType = {
+    TCL_HASH_KEY_TYPE_VERSION,	/* version */
+    0,				/* flags */
+    HashVarKey,			/* hashKeyProc */
+    CompareVarKeys,		/* compareKeysProc */
+    AllocVarEntry,		/* allocEntryProc */
+    FreeVarEntry		/* freeEntryProc */
+};
+
+static inline Var *	VarHashCreateVar(TclVarHashTable *tablePtr,
+			    Tcl_Obj *key, int *newPtr);
+static inline Var *	VarHashFirstVar(TclVarHashTable *tablePtr,
+			    Tcl_HashSearch *searchPtr);
+static inline Var *	VarHashNextVar(Tcl_HashSearch *searchPtr);
+static inline void	CleanupVar(Var *varPtr, Var *arrayPtr);
+
+#define VarHashGetValue(hPtr) \
+    ((Var *) ((char *)hPtr - TclOffset(VarInHash, entry)))
+
+/*
+ * NOTE: VarHashCreateVar increments the recount of its key argument.
+ * All callers that will call Tcl_DecrRefCount on that argument must
+ * call Tcl_IncrRefCount on it before passing it in.  This requirement
+ * can bubble up to callers of callers .... etc.
+ */
+
+static inline Var *
+VarHashCreateVar(
+    TclVarHashTable *tablePtr,
+    Tcl_Obj *key,
+    int *newPtr)
+{
+    Tcl_HashEntry *hPtr = Tcl_CreateHashEntry((Tcl_HashTable *) tablePtr,
+	    (char *) key, newPtr);
+
+    if (hPtr) {
+	return VarHashGetValue(hPtr);
+    } else {
+	return NULL;
+    }
+}
+
+#define VarHashFindVar(tablePtr, key) \
+    VarHashCreateVar((tablePtr), (key), NULL)
+#define VarHashInvalidateEntry(varPtr) \
+    ((varPtr)->flags |= VAR_DEAD_HASH)
+#define VarHashDeleteEntry(varPtr) \
+    Tcl_DeleteHashEntry(&(((VarInHash *) varPtr)->entry))
+
+#define VarHashFirstEntry(tablePtr, searchPtr) \
+    Tcl_FirstHashEntry((Tcl_HashTable *) (tablePtr), (searchPtr))
+
+#define VarHashNextEntry(searchPtr) \
+    Tcl_NextHashEntry((searchPtr))
+
+static inline Var *
+VarHashFirstVar(
+    TclVarHashTable *tablePtr,
+    Tcl_HashSearch *searchPtr)
+{
+    Tcl_HashEntry *hPtr = VarHashFirstEntry(tablePtr, searchPtr);
+
+    if (hPtr) {
+	return VarHashGetValue(hPtr);
+    } else {
+	return NULL;
+    }
+}
+
+static inline Var *
+VarHashNextVar(
+    Tcl_HashSearch *searchPtr)
+{
+    Tcl_HashEntry *hPtr = VarHashNextEntry(searchPtr);
+
+    if (hPtr) {
+	return VarHashGetValue(hPtr);
+    } else {
+	return NULL;
+    }
+}
+
+#define VarHashGetKey(varPtr) \
+    (((VarInHash *)(varPtr))->entry.key.objPtr)
+
+#define VarHashDeleteTable(tablePtr) \
+    Tcl_DeleteHashTable((Tcl_HashTable *) (tablePtr))
 
 /*
- * The strings below are used to indicate what went wrong when a
- * variable access is denied.
+ * The strings below are used to indicate what went wrong when a variable
+ * access is denied.
  */
 
-static CONST char *noSuchVar =		"no such variable";
-static CONST char *isArray =		"variable is array";
-static CONST char *needArray =		"variable isn't array";
-static CONST char *noSuchElement =	"no such element in array";
-static CONST char *danglingElement =
-				"upvar refers to element in deleted array";
-static CONST char *danglingVar =	
-				"upvar refers to variable in deleted namespace";
-static CONST char *badNamespace =	"parent namespace doesn't exist";
-static CONST char *missingName =	"missing variable name";
-static CONST char *isArrayElement =	"name refers to an element in an array";
+static const char *noSuchVar =		"no such variable";
+static const char *isArray =		"variable is array";
+static const char *needArray =		"variable isn't array";
+static const char *noSuchElement =	"no such element in array";
+static const char *danglingElement =
+	"upvar refers to element in deleted array";
+static const char *danglingVar =
+	"upvar refers to variable in deleted namespace";
+static const char *badNamespace =	"parent namespace doesn't exist";
+static const char *missingName =	"missing variable name";
+static const char *isArrayElement =
+	"name refers to an element in an array";
 
 /*
- * Forward references to procedures defined later in this file:
+ * A test to see if we are in a call frame that has local variables. This is
+ * true if we are inside a procedure body.
  */
 
-static int		CallVarTraces _ANSI_ARGS_((Interp *iPtr, Var *arrayPtr,
-			    Var *varPtr, CONST char *part1, CONST char *part2,
-			    int flags, CONST int leaveErrMsg));
-static void		CleanupVar _ANSI_ARGS_((Var *varPtr,
-			    Var *arrayPtr));
-static void		DeleteSearches _ANSI_ARGS_((Var *arrayVarPtr));
-static void		DeleteArray _ANSI_ARGS_((Interp *iPtr,
-			    CONST char *arrayName, Var *varPtr, int flags));
-static void		DisposeTraceResult _ANSI_ARGS_((int flags,
-			    char *result));
-static int              ObjMakeUpvar _ANSI_ARGS_((Tcl_Interp *interp, 
-                            CallFrame *framePtr, Tcl_Obj *otherP1Ptr, 
-                            CONST char *otherP2, CONST int otherFlags,
-		            CONST char *myName, int myFlags, int index));
-static Var *		NewVar _ANSI_ARGS_((void));
-static ArraySearch *	ParseSearchId _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST Var *varPtr, CONST char *varName,
-			    Tcl_Obj *handleObj));
-static void		VarErrMsg _ANSI_ARGS_((Tcl_Interp *interp,
-			    CONST char *part1, CONST char *part2,
-			    CONST char *operation, CONST char *reason));
-static int		SetArraySearchObj _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *objPtr));
-static void		UnsetVarStruct _ANSI_ARGS_((Var *varPtr, Var *arrayPtr,
-			    Interp *iPtr, CONST char *part1, CONST char *part2,
-			    int flags));
+#define HasLocalVars(framePtr) ((framePtr)->isProcCallFrame & FRAME_IS_PROC)
 
 /*
- * Functions defined in this file that may be exported in the future
- * for use by the bytecode compiler and engine or to the public interface.
+ * The following structure describes an enumerative search in progress on an
+ * array variable; this are invoked with options to the "array" command.
  */
 
-Var *		TclLookupSimpleVar _ANSI_ARGS_((Tcl_Interp *interp,
-		    CONST char *varName, int flags, CONST int create,
-		    CONST char **errMsgPtr, int *indexPtr));
-int		TclObjUnsetVar2 _ANSI_ARGS_((Tcl_Interp *interp,
-		    Tcl_Obj *part1Ptr, CONST char *part2, int flags));
+typedef struct ArraySearch {
+    int id;			/* Integer id used to distinguish among
+				 * multiple concurrent searches for the same
+				 * array. */
+    struct Var *varPtr;		/* Pointer to array variable that's being
+				 * searched. */
+    Tcl_HashSearch search;	/* Info kept by the hash module about progress
+				 * through the array. */
+    Tcl_HashEntry *nextEntry;	/* Non-null means this is the next element to
+				 * be enumerated (it's leftover from the
+				 * Tcl_FirstHashEntry call or from an "array
+				 * anymore" command). NULL means must call
+				 * Tcl_NextHashEntry to get value to
+				 * return. */
+    struct ArraySearch *nextPtr;/* Next in list of all active searches for
+				 * this variable, or NULL if this is the last
+				 * one. */
+} ArraySearch;
 
-static Tcl_FreeInternalRepProc FreeLocalVarName;
-static Tcl_DupInternalRepProc DupLocalVarName;
-static Tcl_UpdateStringProc UpdateLocalVarName;
-static Tcl_FreeInternalRepProc FreeNsVarName;
-static Tcl_DupInternalRepProc DupNsVarName;
-static Tcl_FreeInternalRepProc FreeParsedVarName;
-static Tcl_DupInternalRepProc DupParsedVarName;
-static Tcl_UpdateStringProc UpdateParsedVarName;
+/*
+ * Forward references to functions defined later in this file:
+ */
+
+static void		AppendLocals(Tcl_Interp *interp, Tcl_Obj *listPtr,
+			    Tcl_Obj *patternPtr, int includeLinks);
+static void		DeleteSearches(Interp *iPtr, Var *arrayVarPtr);
+static void		DeleteArray(Interp *iPtr, Tcl_Obj *arrayNamePtr,
+			    Var *varPtr, int flags);
+static Tcl_Var          ObjFindNamespaceVar(Tcl_Interp *interp,
+			    Tcl_Obj *namePtr, Tcl_Namespace *contextNsPtr,
+			    int flags);
+static int		ObjMakeUpvar(Tcl_Interp *interp,
+			    CallFrame *framePtr, Tcl_Obj *otherP1Ptr,
+			    const char *otherP2, const int otherFlags,
+			    Tcl_Obj *myNamePtr, int myFlags, int index);
+static ArraySearch *	ParseSearchId(Tcl_Interp *interp, const Var *varPtr,
+			    Tcl_Obj *varNamePtr, Tcl_Obj *handleObj);
+static void		UnsetVarStruct(Var *varPtr, Var *arrayPtr,
+			    Interp *iPtr, Tcl_Obj *part1Ptr,
+			    Tcl_Obj *part2Ptr, int flags);
+static int		SetArraySearchObj(Tcl_Interp *interp,
+			    Tcl_Obj *objPtr);
+
+/*
+ * Functions defined in this file that may be exported in the future for use
+ * by the bytecode compiler and engine or to the public interface.
+ */
+
+MODULE_SCOPE Var *	TclLookupSimpleVar(Tcl_Interp *interp,
+			    Tcl_Obj *varNamePtr, int flags, const int create,
+			    const char **errMsgPtr, int *indexPtr);
+
+static Tcl_DupInternalRepProc	DupLocalVarName;
+static Tcl_FreeInternalRepProc	FreeLocalVarName;
+static Tcl_UpdateStringProc	PanicOnUpdateVarName;
+
+static Tcl_FreeInternalRepProc	FreeParsedVarName;
+static Tcl_DupInternalRepProc	DupParsedVarName;
+static Tcl_UpdateStringProc	UpdateParsedVarName;
+
+static Tcl_UpdateStringProc	PanicOnUpdateVarName;
+static Tcl_SetFromAnyProc	PanicOnSetVarName;
 
 /*
  * Types of Tcl_Objs used to cache variable lookups.
  *
- * 
  * localVarName - INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1 = pointer to the corresponding Proc 
- *   twoPtrValue.ptr2 = index into locals table
+ *   ptrAndLongRep.ptr:   pointer to name obj in varFramePtr->localCache
+ *                        or NULL if it is this same obj
+ *   ptrAndLongRep.value: index into locals table
  *
  * nsVarName - INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1: pointer to the namespace containing the 
- *                     reference
- *   twoPtrValue.ptr2: pointer to the corresponding Var 
+ *   twoPtrValue.ptr1:	pointer to the namespace containing the reference
+ *   twoPtrValue.ptr2:	pointer to the corresponding Var
  *
  * parsedVarName - INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1 = pointer to the array name Tcl_Obj, 
- *                      or NULL if it is a scalar variable
- *   twoPtrValue.ptr2 = pointer to the element name string
- *                      (owned by this Tcl_Obj), or NULL if 
- *                      it is a scalar variable
+ *   twoPtrValue.ptr1:	pointer to the array name Tcl_Obj, or NULL if it is a
+ *			scalar variable
+ *   twoPtrValue.ptr2:	pointer to the element name string (owned by this
+ *			Tcl_Obj), or NULL if it is a scalar variable
  */
 
-static Tcl_ObjType tclLocalVarNameType = {
+static Tcl_ObjType localVarNameType = {
     "localVarName",
-    FreeLocalVarName, DupLocalVarName, UpdateLocalVarName, NULL
+    FreeLocalVarName, DupLocalVarName, PanicOnUpdateVarName, PanicOnSetVarName
 };
 
+/*
+ * Caching of namespace variables disabled: no simple way was found to avoid
+ * interfering with the resolver's idea of variable existence. A cached
+ * varName may keep a variable's name in the namespace's hash table, which is
+ * the resolver's criterion for existence (see test namespace-17.10).
+ */
+
+#define ENABLE_NS_VARNAME_CACHING 0
+
+#if ENABLE_NS_VARNAME_CACHING
+static Tcl_FreeInternalRepProc FreeNsVarName;
+static Tcl_DupInternalRepProc DupNsVarName;
+
 static Tcl_ObjType tclNsVarNameType = {
     "namespaceVarName",
-    FreeNsVarName, DupNsVarName, NULL, NULL
+    FreeNsVarName, DupNsVarName, PanicOnUpdateVarName, PanicOnSetVarName
 };
+#endif
 
 static Tcl_ObjType tclParsedVarNameType = {
     "parsedVarName",
-    FreeParsedVarName, DupParsedVarName, UpdateParsedVarName, NULL
+    FreeParsedVarName, DupParsedVarName, UpdateParsedVarName, PanicOnSetVarName
 };
 
 /*
  * Type of Tcl_Objs used to speed up array searches.
  *
  * INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1 = searchIdNumber as offset from (char*)NULL
- *   twoPtrValue.ptr2 = variableNameStartInString as offset from (char*)NULL
+ *   twoPtrValue.ptr1:	searchIdNumber (cast to pointer)
+ *   twoPtrValue.ptr2:	variableNameStartInString (cast to pointer)
  *
- * Note that the value stored in ptr2 is the offset into the string of
- * the start of the variable name and not the address of the variable
- * name itself, as this can be safely copied.
+ * Note that the value stored in ptr2 is the offset into the string of the
+ * start of the variable name and not the address of the variable name itself,
+ * as this can be safely copied.
  */
+
 Tcl_ObjType tclArraySearchType = {
     "array search",
     NULL, NULL, NULL, SetArraySearchObj
 };
+
+Var *
+TclVarHashCreateVar(
+    TclVarHashTable *tablePtr,
+    const char *key,
+    int *newPtr)
+{
+    Tcl_Obj *keyPtr;
+    Var *varPtr;
+
+    keyPtr = Tcl_NewStringObj(key, -1);
+    Tcl_IncrRefCount(keyPtr);
+    varPtr = VarHashCreateVar(tablePtr, keyPtr, newPtr);
+    Tcl_DecrRefCount(keyPtr);
+
+    return varPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclCleanupVar --
+ *
+ *	This function is called when it looks like it may be OK to free up a
+ *	variable's storage. If the variable is in a hashtable, its Var
+ *	structure and hash table entry will be freed along with those of its
+ *	containing array, if any. This function is called, for example, when
+ *	a trace on a variable deletes a variable.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	If the variable (or its containing array) really is dead and in a
+ *	hashtable, then its Var structure, and possibly its hash table entry,
+ *	is freed up.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static inline void
+CleanupVar(
+    Var *varPtr,		/* Pointer to variable that may be a candidate
+				 * for being expunged. */
+    Var *arrayPtr)		/* Array that contains the variable, or NULL
+				 * if this variable isn't an array element. */
+{
+    if (TclIsVarUndefined(varPtr) && TclIsVarInHash(varPtr)
+	    && !TclIsVarTraced(varPtr)
+	    && (VarHashRefCount(varPtr) == !TclIsVarDeadHash(varPtr))) {
+	if (VarHashRefCount(varPtr) == 0) {
+	    ckfree((char *) varPtr);
+	} else {
+	    VarHashDeleteEntry(varPtr);
+	}
+    }
+    if (arrayPtr != NULL && TclIsVarUndefined(arrayPtr) &&
+	    TclIsVarInHash(arrayPtr) && !TclIsVarTraced(arrayPtr) &&
+	    (VarHashRefCount(arrayPtr) == !TclIsVarDeadHash(arrayPtr))) {
+	if (VarHashRefCount(arrayPtr) == 0) {
+	    ckfree((char *) arrayPtr);
+	} else {
+	    VarHashDeleteEntry(arrayPtr);
+	}
+    }
+}
 
+void
+TclCleanupVar(
+    Var *varPtr,		/* Pointer to variable that may be a candidate
+				 * for being expunged. */
+    Var *arrayPtr)		/* Array that contains the variable, or NULL
+				 * if this variable isn't an array element. */
+{
+    CleanupVar(varPtr, arrayPtr);
+}
 
 /*
  *----------------------------------------------------------------------
  *
  * TclLookupVar --
  *
- *	This procedure is used to locate a variable given its name(s). It
- *      has been mostly superseded by TclObjLookupVar, it is now only used 
- *      by the string-based interfaces. It is kept in tcl8.4 mainly because 
- *      it is in the internal stubs table, so that some extension may be 
- *      calling it. 
+ *	This function is used to locate a variable given its name(s). It has
+ *	been mostly superseded by TclObjLookupVar, it is now only used by the
+ *	trace code. It is kept in tcl8.5 mainly because it is in the internal
+ *	stubs table, so that some extension may be calling it.
  *
  * Results:
  *	The return value is a pointer to the variable structure indicated by
@@ -164,14 +372,14 @@ Tcl_ObjType tclArraySearchType = {
  *
  *	If the variable isn't found and creation wasn't specified, or some
  *	other error occurs, NULL is returned and an error message is left in
- *	the interp's result if TCL_LEAVE_ERR_MSG is set in flags. 
+ *	the interp's result if TCL_LEAVE_ERR_MSG is set in flags.
  *
- *	Note: it's possible for the variable returned to be VAR_UNDEFINED
- *	even if createPart1 or createPart2 are 1 (these only cause the hash
- *	table entry or array to be created). For example, the variable might
- *	be a global that has been unset but is still referenced by a
- *	procedure, or a variable that has been unset but it only being kept
- *	in existence (if VAR_UNDEFINED) by a trace.
+ *	Note: it's possible for the variable returned to be VAR_UNDEFINED even
+ *	if createPart1 or createPart2 are 1 (these only cause the hash table
+ *	entry or array to be created). For example, the variable might be a
+ *	global that has been unset but is still referenced by a procedure, or
+ *	a variable that has been unset but it only being kept in existence (if
+ *	VAR_UNDEFINED) by a trace.
  *
  * Side effects:
  *	New hashtable entries may be created if createPart1 or createPart2
@@ -179,132 +387,59 @@ Tcl_ObjType tclArraySearchType = {
  *
  *----------------------------------------------------------------------
  */
+
 Var *
-TclLookupVar(interp, part1, part2, flags, msg, createPart1, createPart2,
-        arrayPtrPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for lookup. */
-    CONST char *part1;	        /* If part2 isn't NULL, this is the name of
-				 * an array. Otherwise, this
-				 * is a full variable name that could
-				 * include a parenthesized array element. */
-    CONST char *part2;		/* Name of element within array, or NULL. */
-    int flags;			/* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+TclLookupVar(
+    Tcl_Interp *interp,		/* Interpreter to use for lookup. */
+    const char *part1,		/* If part2 isn't NULL, this is the name of an
+				 * array. Otherwise, this is a full variable
+				 * name that could include a parenthesized
+				 * array element. */
+    const char *part2,		/* Name of element within array, or NULL. */
+    int flags,			/* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
 				 * and TCL_LEAVE_ERR_MSG bits matter. */
-    CONST char *msg;			/* Verb to use in error messages, e.g.
-				 * "read" or "set". Only needed if
-				 * TCL_LEAVE_ERR_MSG is set in flags. */
-    int createPart1;		/* If 1, create hash table entry for part 1
-				 * of name, if it doesn't already exist. If
-				 * 0, return error if it doesn't exist. */
-    int createPart2;		/* If 1, create hash table entry for part 2
-				 * of name, if it doesn't already exist. If
-				 * 0, return error if it doesn't exist. */
-    Var **arrayPtrPtr;		/* If the name refers to an element of an
+    const char *msg,		/* Verb to use in error messages, e.g. "read"
+				 * or "set". Only needed if TCL_LEAVE_ERR_MSG
+				 * is set in flags. */
+    int createPart1,		/* If 1, create hash table entry for part 1 of
+				 * name, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    int createPart2,		/* If 1, create hash table entry for part 2 of
+				 * name, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    Var **arrayPtrPtr)		/* If the name refers to an element of an
 				 * array, *arrayPtrPtr gets filled in with
-				 * address of array variable. Otherwise
-				 * this is set to NULL. */
+				 * address of array variable. Otherwise this
+				 * is set to NULL. */
 {
     Var *varPtr;
-    CONST char *elName;		/* Name of array element or NULL; may be
-				 * same as part2, or may be openParen+1. */
-    int openParen, closeParen;
-                                /* If this procedure parses a name into
-				 * array and index, these are the offsets to 
-				 * the parens around the index.  Otherwise 
-				 * they are -1. */
-    register CONST char *p;
-    CONST char *errMsg = NULL;
-    int index;
-#define VAR_NAME_BUF_SIZE 26
-    char buffer[VAR_NAME_BUF_SIZE];
-    char *newVarName = buffer;
+    Tcl_Obj *part1Ptr = Tcl_NewStringObj(part1, -1);
 
-    varPtr = NULL;
-    *arrayPtrPtr = NULL;
-    openParen = closeParen = -1;
-
-    /*
-     * Parse part1 into array name and index.
-     * Always check if part1 is an array element name and allow it only if
-     * part2 is not given.   
-     * (if one does not care about creating array elements that can't be used
-     *  from tcl, and prefer slightly better performance, one can put
-     *  the following in an   if (part2 == NULL) { ... } block and remove
-     *  the part2's test and error reporting  or move that code in array set)
-     */
-
-    elName = part2;
-    for (p = part1; *p ; p++) {
-	if (*p == '(') {
-	    openParen = p - part1;
-	    do {
-		p++;
-	    } while (*p != '\0');
-	    p--;
-	    if (*p == ')') {
-		if (part2 != NULL) {
-		    if (flags & TCL_LEAVE_ERR_MSG) {
-			VarErrMsg(interp, part1, part2, msg, needArray);
-		    }
-		    return NULL;
-		}
-		closeParen = p - part1;
-	    } else {
-		openParen = -1;
-	    }
-	    break;
-	}
-    }
-    if (openParen != -1) {
-	if (closeParen >= VAR_NAME_BUF_SIZE) {
-	    newVarName = ckalloc((unsigned int) (closeParen+1));
-	}
-	memcpy(newVarName, part1, (unsigned int) closeParen);
-	newVarName[openParen] = '\0';
-	newVarName[closeParen] = '\0';
-	part1 = newVarName;
-	elName = newVarName + openParen + 1;
+    if (createPart1) {
+	Tcl_IncrRefCount(part1Ptr);
     }
 
-    varPtr = TclLookupSimpleVar(interp, part1, flags, 
-            createPart1, &errMsg, &index);
-    if (varPtr == NULL) {
-	if ((errMsg != NULL) && (flags & TCL_LEAVE_ERR_MSG)) {
-	    VarErrMsg(interp, part1, elName, msg, errMsg);
-	}
-    } else {
-	while (TclIsVarLink(varPtr)) {
-	    varPtr = varPtr->value.linkPtr;
-	}
-	if (elName != NULL) {
-	    *arrayPtrPtr = varPtr;
-	    varPtr = TclLookupArrayElement(interp, part1, elName, flags, 
-		    msg, createPart1, createPart2, varPtr);
-	}
-    }
-    if (newVarName != buffer) {
-	ckfree(newVarName);
-    }
+    varPtr = TclObjLookupVar(interp, part1Ptr, part2, flags, msg,
+	    createPart1, createPart2, arrayPtrPtr);
 
+    TclDecrRefCount(part1Ptr);
     return varPtr;
-	
-#undef VAR_NAME_BUF_SIZE
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclObjLookupVar --
+ * TclObjLookupVar, TclObjLookupVarEx --
  *
- *	This procedure is used by virtually all of the variable code to
- *	locate a variable given its name(s). The parsing into array/element
- *      components and (if possible) the lookup results are cached in 
- *      part1Ptr, which is converted to one of the varNameTypes.
+ *	This function is used by virtually all of the variable code to locate
+ *	a variable given its name(s). The parsing into array/element
+ *	components and (if possible) the lookup results are cached in
+ *	part1Ptr, which is converted to one of the varNameTypes.
  *
  * Results:
  *	The return value is a pointer to the variable structure indicated by
- *	part1Ptr and part2, or NULL if the variable couldn't be found. If 
- *      the variable is found, *arrayPtrPtr is filled with the address of the
+ *	part1Ptr and part2, or NULL if the variable couldn't be found. If *
+ *	the variable is found, *arrayPtrPtr is filled with the address of the
  *	variable structure for the array that contains the variable (or NULL
  *	if the variable is a scalar). If the variable can't be found and
  *	either createPart1 or createPart2 are 1, a new as-yet-undefined
@@ -313,48 +448,99 @@ TclLookupVar(interp, part1, part2, flags, msg, createPart1, createPart2,
  *
  *	If the variable isn't found and creation wasn't specified, or some
  *	other error occurs, NULL is returned and an error message is left in
- *	the interp's result if TCL_LEAVE_ERR_MSG is set in flags. 
+ *	the interp's result if TCL_LEAVE_ERR_MSG is set in flags.
  *
- *	Note: it's possible for the variable returned to be VAR_UNDEFINED
- *	even if createPart1 or createPart2 are 1 (these only cause the hash
- *	table entry or array to be created). For example, the variable might
- *	be a global that has been unset but is still referenced by a
- *	procedure, or a variable that has been unset but it only being kept
- *	in existence (if VAR_UNDEFINED) by a trace.
+ *	Note: it's possible for the variable returned to be VAR_UNDEFINED even
+ *	if createPart1 or createPart2 are 1 (these only cause the hash table
+ *	entry or array to be created). For example, the variable might be a
+ *	global that has been unset but is still referenced by a procedure, or
+ *	a variable that has been unset but it only being kept in existence (if
+ *	VAR_UNDEFINED) by a trace.
  *
  * Side effects:
  *	New hashtable entries may be created if createPart1 or createPart2
- *	are 1.
- *      The object part1Ptr is converted to one of tclLocalVarNameType, 
- *      tclNsVarNameType or tclParsedVarNameType and caches as much of the
- *      lookup as it can.
+ *	are 1. The object part1Ptr is converted to one of localVarNameType,
+ *	tclNsVarNameType or tclParsedVarNameType and caches as much of the
+ *	lookup as it can.
+ *	When createPart1 is 1, callers must IncrRefCount part1Ptr if they
+ *	plan to DecrRefCount it.
  *
  *----------------------------------------------------------------------
  */
+
 Var *
-TclObjLookupVar(interp, part1Ptr, part2, flags, msg, createPart1, createPart2,
-        arrayPtrPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for lookup. */
-    register Tcl_Obj *part1Ptr;	/* If part2 isn't NULL, this is the name 
-				 * of an array. Otherwise, this is a full 
-				 * variable name that could include a parenthesized 
+TclObjLookupVar(
+    Tcl_Interp *interp,		/* Interpreter to use for lookup. */
+    register Tcl_Obj *part1Ptr,	/* If part2 isn't NULL, this is the name of an
+				 * array. Otherwise, this is a full variable
+				 * name that could include a parenthesized
 				 * array element. */
-    CONST char *part2;		/* Name of element within array, or NULL. */
-    int flags;		        /* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+    const char *part2,		/* Name of element within array, or NULL. */
+    int flags,			/* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * and TCL_LEAVE_ERR_MSG bits matter. */
+    const char *msg,		/* Verb to use in error messages, e.g. "read"
+				 * or "set". Only needed if TCL_LEAVE_ERR_MSG
+				 * is set in flags. */
+    const int createPart1,	/* If 1, create hash table entry for part 1 of
+				 * name, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    const int createPart2,	/* If 1, create hash table entry for part 2 of
+				 * name, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    Var **arrayPtrPtr)		/* If the name refers to an element of an
+				 * array, *arrayPtrPtr gets filled in with
+				 * address of array variable. Otherwise this
+				 * is set to NULL. */
+{
+    Tcl_Obj *part2Ptr = NULL;
+    Var *resPtr;
+
+    if (part2) {
+	part2Ptr = Tcl_NewStringObj(part2, -1);
+	if (createPart2) {
+	    Tcl_IncrRefCount(part2Ptr);
+	}
+    }
+
+    resPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr,
+	    flags, msg, createPart1, createPart2, arrayPtrPtr);
+
+    if (part2Ptr) {
+	Tcl_DecrRefCount(part2Ptr);
+    }
+
+    return resPtr;
+}
+
+/*
+ *	When createPart1 is 1, callers must IncrRefCount part1Ptr if they
+ *	plan to DecrRefCount it.
+ *	When createPart2 is 1, callers must IncrRefCount part2Ptr if they
+ *	plan to DecrRefCount it.
+ */
+Var *
+TclObjLookupVarEx(
+    Tcl_Interp *interp,		/* Interpreter to use for lookup. */
+    Tcl_Obj *part1Ptr,		/* If part2Ptr isn't NULL, this is the name of
+				 * an array. Otherwise, this is a full
+				 * variable name that could include a
+				 * parenthesized array element. */
+    Tcl_Obj *part2Ptr,		/* Name of element within array, or NULL. */
+    int flags,			/* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
 				 * and TCL_LEAVE_ERR_MSG bits matter. */
-    CONST char *msg;		/* Verb to use in error messages, e.g.
-				 * "read" or "set". Only needed if
-				 * TCL_LEAVE_ERR_MSG is set in flags. */
-    CONST int createPart1;	/* If 1, create hash table entry for part 1
-				 * of name, if it doesn't already exist. If
-				 * 0, return error if it doesn't exist. */
-    CONST int createPart2;	/* If 1, create hash table entry for part 2
-				 * of name, if it doesn't already exist. If
-				 * 0, return error if it doesn't exist. */
-    Var **arrayPtrPtr;		/* If the name refers to an element of an
+    const char *msg,		/* Verb to use in error messages, e.g. "read"
+				 * or "set". Only needed if TCL_LEAVE_ERR_MSG
+				 * is set in flags. */
+    const int createPart1,	/* If 1, create hash table entry for part 1 of
+				 * name, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    const int createPart2,	/* If 1, create hash table entry for part 2 of
+				 * name, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    Var **arrayPtrPtr)		/* If the name refers to an element of an
 				 * array, *arrayPtrPtr gets filled in with
-				 * address of array variable. Otherwise
-				 * this is set to NULL. */
+				 * address of array variable. Otherwise this
+				 * is set to NULL. */
 {
     Interp *iPtr = (Interp *) interp;
     register Var *varPtr;	/* Points to the variable's in-frame Var
@@ -363,117 +549,150 @@ TclObjLookupVar(interp, part1Ptr, part2, flags, msg, createPart1, createPart2,
     int index, len1, len2;
     int parsed = 0;
     Tcl_Obj *objPtr;
-    Tcl_ObjType *typePtr = part1Ptr->typePtr;
-    CONST char *errMsg = NULL;
+    const Tcl_ObjType *typePtr = part1Ptr->typePtr;
+    const char *errMsg = NULL;
     CallFrame *varFramePtr = iPtr->varFramePtr;
+#if ENABLE_NS_VARNAME_CACHING
     Namespace *nsPtr;
-
-    /*
-     * If part1Ptr is a tclParsedVarNameType, separate it into the 
-     * pre-parsed parts.
-     */
+#endif
+    char *part2 = part2Ptr? TclGetString(part2Ptr):NULL;
+    char *newPart2 = NULL;
 
     *arrayPtrPtr = NULL;
-    if (typePtr == &tclParsedVarNameType) {
-	if (part1Ptr->internalRep.twoPtrValue.ptr1 != NULL) {
-	    if (part2 != NULL) {
-		/*
-		 * ERROR: part1Ptr is already an array element, cannot 
-		 * specify a part2.
-		 */
 
-		if (flags & TCL_LEAVE_ERR_MSG) {
-		    part1 = TclGetString(part1Ptr);
-		    VarErrMsg(interp, part1, part2, msg, needArray);
-		}
-		return NULL;
-	    }
-	    part2 = (char *) part1Ptr->internalRep.twoPtrValue.ptr2;
-	    part1Ptr = (Tcl_Obj *) part1Ptr->internalRep.twoPtrValue.ptr1;
-	    typePtr = part1Ptr->typePtr;
-	}
-	parsed = 1;
-    }
-    part1 = Tcl_GetStringFromObj(part1Ptr, &len1);    
+#if ENABLE_NS_VARNAME_CACHING
+    if (varFramePtr) {
+	nsPtr = varFramePtr->nsPtr;
+    } else {
+	/*
+	 * Some variables in the global ns have to be initialized before the
+	 * root call frame is in place.
+	 */
 
-    nsPtr = ((varFramePtr == NULL)? iPtr->globalNsPtr : varFramePtr->nsPtr);
-    if (nsPtr->varResProc != NULL || iPtr->resolverPtr != NULL) {
-	goto doParse;
+	nsPtr = NULL;
     }
-    
-    if (typePtr == &tclLocalVarNameType) {
-	Proc *procPtr = (Proc *) part1Ptr->internalRep.twoPtrValue.ptr1;
-	int localIndex = (int) part1Ptr->internalRep.twoPtrValue.ptr2;
-	int useLocal;
+#endif
 
-	useLocal = ((varFramePtr != NULL) && varFramePtr->isProcCallFrame
-	        && !(flags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY)));
-	if (useLocal && (procPtr == varFramePtr->procPtr)) {
+    if (typePtr == &localVarNameType) {
+	int localIndex;
+
+    localVarNameTypeHandling:
+	localIndex = (int) part1Ptr->internalRep.ptrAndLongRep.value;
+	if (HasLocalVars(varFramePtr)
+		&& !(flags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY))
+		&& (localIndex < varFramePtr->numCompiledLocals)) {
 	    /*
-	     * part1Ptr points to an indexed local variable of the
-	     * correct procedure: use the cached value.
+	     * Use the cached index if the names coincide.
 	     */
-	    
-	    varPtr = &(varFramePtr->compiledLocals[localIndex]);
-	    goto donePart1;
+
+	    Tcl_Obj *namePtr = (Tcl_Obj *)
+		    part1Ptr->internalRep.ptrAndLongRep.ptr;
+	    Tcl_Obj *checkNamePtr = localName(iPtr->varFramePtr, localIndex);
+
+	    if ((!namePtr && (checkNamePtr == part1Ptr)) ||
+		    (namePtr && (checkNamePtr == namePtr))) {
+		varPtr = (Var *) &(varFramePtr->compiledLocals[localIndex]);
+		goto donePart1;
+	    }
 	}
 	goto doneParsing;
+#if ENABLE_NS_VARNAME_CACHING
     } else if (typePtr == &tclNsVarNameType) {
-	Namespace *cachedNsPtr;
 	int useGlobal, useReference;
+	Namespace *cachedNsPtr = part1Ptr->internalRep.twoPtrValue.ptr1;
+	varPtr = part1Ptr->internalRep.twoPtrValue.ptr2;
+
+	useGlobal = (cachedNsPtr == iPtr->globalNsPtr) && (
+		(flags & TCL_GLOBAL_ONLY) ||
+		(part1[0]==':' && part1[1]==':') ||
+		(!HasLocalVars(varFramePtr) && (nsPtr==iPtr->globalNsPtr)));
+
+	useReference = useGlobal || ((cachedNsPtr == nsPtr) && (
+		(flags & TCL_NAMESPACE_ONLY) ||
+		(!HasLocalVars(varFramePtr) && !(flags & TCL_GLOBAL_ONLY) &&
+		/*
+		 * Careful: an undefined ns variable could be hiding a valid
+		 * global reference.
+		 */
+		!TclIsVarUndefined(varPtr))));
 
-	varPtr = (Var *) part1Ptr->internalRep.twoPtrValue.ptr2;
-	cachedNsPtr = (Namespace *) part1Ptr->internalRep.twoPtrValue.ptr1;
-	useGlobal = (cachedNsPtr == iPtr->globalNsPtr) 
-	    && ((flags & TCL_GLOBAL_ONLY) 
-		|| ((*part1 == ':') && (*(part1+1) == ':'))
-		|| (varFramePtr == NULL) 
-		|| (!varFramePtr->isProcCallFrame 
-		    && (nsPtr == iPtr->globalNsPtr)));
-	useReference = useGlobal || ((cachedNsPtr == nsPtr) 
-	        && ((flags & TCL_NAMESPACE_ONLY) 
-		    || (varFramePtr && !varFramePtr->isProcCallFrame 
-			&& !(flags & TCL_GLOBAL_ONLY)
-			/* careful: an undefined ns variable could
-			 * be hiding a valid global reference. */
-			&& !(varPtr->flags & VAR_UNDEFINED))));
-	if (useReference && (varPtr->hPtr != NULL)) {
+	if (useReference && !TclIsVarDeadHash(varPtr)) {
 	    /*
-	     * A straight global or namespace reference, use it. It isn't 
-	     * so simple to deal with 'implicit' namespace references, i.e., 
-	     * those where the reference could be to either a namespace 
-	     * or a global variable. Those we lookup again.
+	     * A straight global or namespace reference, use it. It isn't so
+	     * simple to deal with 'implicit' namespace references, i.e.,
+	     * those where the reference could be to either a namespace or a
+	     * global variable. Those we lookup again.
 	     *
-	     * If (varPtr->hPtr == NULL), this might be a reference to a
+	     * If TclIsVarDeadHash(varPtr), this might be a reference to a
 	     * variable in a deleted namespace, kept alive by e.g. part1Ptr.
 	     * We could conceivably be so unlucky that a new namespace was
-	     * created at the same address as the deleted one, so to be 
-	     * safe we test for a valid hPtr.
+	     * created at the same address as the deleted one, so to be safe
+	     * we test for a valid hPtr.
 	     */
+
 	    goto donePart1;
 	}
 	goto doneParsing;
+#endif
+    }
+
+    /*
+     * If part1Ptr is a tclParsedVarNameType, separate it into the pre-parsed
+     * parts.
+     */
+
+    if (typePtr == &tclParsedVarNameType) {
+	if (part1Ptr->internalRep.twoPtrValue.ptr1 != NULL) {
+	    if (part2Ptr != NULL) {
+		/*
+		 * ERROR: part1Ptr is already an array element, cannot specify
+		 * a part2.
+		 */
+
+		if (flags & TCL_LEAVE_ERR_MSG) {
+		    TclObjVarErrMsg(interp, part1Ptr, part2Ptr, msg,
+			    noSuchVar, -1);
+		}
+		return NULL;
+	    }
+	    part2 = newPart2 = part1Ptr->internalRep.twoPtrValue.ptr2;
+	    if (newPart2) {
+		part2Ptr = Tcl_NewStringObj(newPart2, -1);
+		if (createPart2) {
+		    Tcl_IncrRefCount(part2Ptr);
+		}
+	    }
+	    part1Ptr = part1Ptr->internalRep.twoPtrValue.ptr1;
+	    typePtr = part1Ptr->typePtr;
+	    if (typePtr == &localVarNameType) {
+		goto localVarNameTypeHandling;
+	    }
+	}
+	parsed = 1;
     }
+    part1 = TclGetStringFromObj(part1Ptr, &len1);
 
-    doParse:
     if (!parsed && (*(part1 + len1 - 1) == ')')) {
 	/*
 	 * part1Ptr is possibly an unparsed array element.
 	 */
+
 	register int i;
-	char *newPart2;
+
 	len2 = -1;
 	for (i = 0; i < len1; i++) {
 	    if (*(part1 + i) == '(') {
-		if (part2 != NULL) {
+		if (part2Ptr != NULL) {
 		    if (flags & TCL_LEAVE_ERR_MSG) {
-			VarErrMsg(interp, part1, part2, msg, needArray);
+			TclObjVarErrMsg(interp, part1Ptr, part2Ptr, msg,
+				needArray, -1);
 		    }
-		}			
+		    return NULL;
+		}
 
 		/*
-		 * part1Ptr points to an array element; first copy 
-		 * the element name to a new string part2.
+		 * part1Ptr points to an array element; first copy the element
+		 * name to a new string part2.
 		 */
 
 		part2 = part1 + i + 1;
@@ -484,30 +703,32 @@ TclObjLookupVar(interp, part1Ptr, part2, flags, msg, createPart1, createPart2,
 		memcpy(newPart2, part2, (unsigned int) len2);
 		*(newPart2+len2) = '\0';
 		part2 = newPart2;
+		part2Ptr = Tcl_NewStringObj(newPart2, -1);
+		if (createPart2) {
+		    Tcl_IncrRefCount(part2Ptr);
+		}
 
 		/*
-		 * Free the internal rep of the original part1Ptr, now
-		 * renamed objPtr, and set it to tclParsedVarNameType.
+		 * Free the internal rep of the original part1Ptr, now renamed
+		 * objPtr, and set it to tclParsedVarNameType.
 		 */
 
 		objPtr = part1Ptr;
-		if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
-		    typePtr->freeIntRepProc(objPtr);
-		}
+		TclFreeIntRep(objPtr);
 		objPtr->typePtr = &tclParsedVarNameType;
 
 		/*
-		 * Define a new string object to hold the new part1Ptr, i.e., 
+		 * Define a new string object to hold the new part1Ptr, i.e.,
 		 * the array name. Set the internal rep of objPtr, reset
-		 * typePtr and part1 to contain the references to the
-		 * array name.
+		 * typePtr and part1 to contain the references to the array
+		 * name.
 		 */
 
-		part1Ptr = Tcl_NewStringObj(part1, len1);
+		TclNewStringObj(part1Ptr, part1, len1);
 		Tcl_IncrRefCount(part1Ptr);
 
-		objPtr->internalRep.twoPtrValue.ptr1 = (VOID *) part1Ptr;
-		objPtr->internalRep.twoPtrValue.ptr2 = (VOID *) part2;		
+		objPtr->internalRep.twoPtrValue.ptr1 = part1Ptr;
+		objPtr->internalRep.twoPtrValue.ptr2 = (void *) part2;
 
 		typePtr = part1Ptr->typePtr;
 		part1 = TclGetString(part1Ptr);
@@ -515,23 +736,24 @@ TclObjLookupVar(interp, part1Ptr, part2, flags, msg, createPart1, createPart2,
 	    }
 	}
     }
-    
-    doneParsing:
+
+  doneParsing:
     /*
-     * part1Ptr is not an array element; look it up, and convert 
-     * it to one of the cached types if possible.
+     * part1Ptr is not an array element; look it up, and convert it to one of
+     * the cached types if possible.
      */
 
-    if ((typePtr != NULL) && (typePtr->freeIntRepProc != NULL)) {
-	typePtr->freeIntRepProc(part1Ptr);
-	part1Ptr->typePtr = NULL;
-    }
+    TclFreeIntRep(part1Ptr);
+    part1Ptr->typePtr = NULL;
 
-    varPtr = TclLookupSimpleVar(interp, part1, flags, 
-            createPart1, &errMsg, &index);
+    varPtr = TclLookupSimpleVar(interp, part1Ptr, flags, createPart1,
+	    &errMsg, &index);
     if (varPtr == NULL) {
 	if ((errMsg != NULL) && (flags & TCL_LEAVE_ERR_MSG)) {
-	    VarErrMsg(interp, part1, part2, msg, errMsg);
+	    TclObjVarErrMsg(interp, part1Ptr, part2Ptr, msg, errMsg, -1);
+	}
+	if (newPart2) {
+	    Tcl_DecrRefCount(part2Ptr);
 	}
 	return NULL;
     }
@@ -541,52 +763,51 @@ TclObjLookupVar(interp, part1Ptr, part2, flags, msg, createPart1, createPart2,
      */
 
     if (index >= 0) {
-        /*
+	/*
 	 * An indexed local variable.
 	 */
 
-	Proc *procPtr = ((Interp *) interp)->varFramePtr->procPtr;
-
-	part1Ptr->typePtr = &tclLocalVarNameType;
-	procPtr->refCount++;
-	part1Ptr->internalRep.twoPtrValue.ptr1 = (VOID *) procPtr;
-	part1Ptr->internalRep.twoPtrValue.ptr2 = (VOID *) index;
-#if 0
-    /*
-     * TEMPORARYLY DISABLED tclNsVarNameType
-     *
-     * This optimisation will hopefully be turned back on soon.
-     *      Miguel Sofer, 2004-05-22
-     */
-
+	part1Ptr->typePtr = &localVarNameType;
+	if (part1Ptr != localName(iPtr->varFramePtr, index)) {
+	    part1Ptr->internalRep.ptrAndLongRep.ptr =
+		    localName(iPtr->varFramePtr, index);
+	    Tcl_IncrRefCount((Tcl_Obj *)
+		    part1Ptr->internalRep.ptrAndLongRep.ptr);
+	} else {
+	    part1Ptr->internalRep.ptrAndLongRep.ptr = NULL;
+	}
+	part1Ptr->internalRep.ptrAndLongRep.value = (long) index;
+#if ENABLE_NS_VARNAME_CACHING
     } else if (index > -3) {
 	/*
 	 * A cacheable namespace or global variable.
 	 */
+
 	Namespace *nsPtr;
-    
-	nsPtr = ((index == -1)? iPtr->globalNsPtr : varFramePtr->nsPtr);
+
+	nsPtr = ((index == -1) ? iPtr->globalNsPtr : varFramePtr->nsPtr);
 	varPtr->refCount++;
 	part1Ptr->typePtr = &tclNsVarNameType;
-	part1Ptr->internalRep.twoPtrValue.ptr1 = (VOID *) nsPtr;
-	part1Ptr->internalRep.twoPtrValue.ptr2 = (VOID *) varPtr;
+	part1Ptr->internalRep.twoPtrValue.ptr1 = nsPtr;
+	part1Ptr->internalRep.twoPtrValue.ptr2 = varPtr;
 #endif
     } else {
 	/*
 	 * At least mark part1Ptr as already parsed.
 	 */
+
 	part1Ptr->typePtr = &tclParsedVarNameType;
 	part1Ptr->internalRep.twoPtrValue.ptr1 = NULL;
 	part1Ptr->internalRep.twoPtrValue.ptr2 = NULL;
     }
-    
-    donePart1:
+
+  donePart1:
 #if 0
     if (varPtr == NULL) {
 	if (flags & TCL_LEAVE_ERR_MSG) {
 	    part1 = TclGetString(part1Ptr);
-	    VarErrMsg(interp, part1, part2, msg, 
-		    "Cached variable reference is NULL.");
+	    TclObjVarErrMsg(interp, part1Ptr, part2Ptr, msg,
+		    "Cached variable reference is NULL.", -1);
 	}
 	return NULL;
     }
@@ -595,271 +816,265 @@ TclObjLookupVar(interp, part1Ptr, part2, flags, msg, createPart1, createPart2,
 	varPtr = varPtr->value.linkPtr;
     }
 
-    if (part2 != NULL) {
+    if (part2Ptr != NULL) {
 	/*
 	 * Array element sought: look it up.
 	 */
 
-	part1 = TclGetString(part1Ptr);
 	*arrayPtrPtr = varPtr;
-	varPtr = TclLookupArrayElement(interp, part1, part2, 
-                flags, msg, createPart1, createPart2, varPtr);
+	varPtr = TclLookupArrayElement(interp, part1Ptr, part2Ptr, flags, msg,
+		createPart1, createPart2, varPtr, -1);
+	if (newPart2) {
+	    Tcl_DecrRefCount(part2Ptr);
+	}
     }
     return varPtr;
 }
 
 /*
- * This flag bit should not interfere with TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
- * or TCL_LEAVE_ERR_MSG; it signals that the variable lookup is performed for 
- * upvar (or similar) purposes, with slightly different rules:
- *   - Bug #696893 - variable is either proc-local or in the current
- *     namespace; never follow the second (global) resolution path 
- *   - Bug #631741 - do not use special namespace or interp resolvers
+ * This flag bit should not interfere with TCL_GLOBAL_ONLY,
+ * TCL_NAMESPACE_ONLY, or TCL_LEAVE_ERR_MSG; it signals that the variable
+ * lookup is performed for upvar (or similar) purposes, with slightly
+ * different rules:
+ *    - Bug #696893 - variable is either proc-local or in the current
+ *	namespace; never follow the second (global) resolution path
+ *    - Bug #631741 - do not use special namespace or interp resolvers
+ *
+ * It should also not collide with the (deprecated) TCL_PARSE_PART1 flag
+ * (Bug #835020)
  */
-#define LOOKUP_FOR_UPVAR 0x40000
+
+#define AVOID_RESOLVERS 0x40000
 
 /*
  *----------------------------------------------------------------------
  *
  * TclLookupSimpleVar --
  *
- *	This procedure is used by to locate a simple variable (i.e., not
- *      an array element) given its name.
+ *	This function is used by to locate a simple variable (i.e., not an
+ *	array element) given its name.
  *
  * Results:
  *	The return value is a pointer to the variable structure indicated by
- *	varName, or NULL if the variable couldn't be found. If the variable 
- *      can't be found and create is 1, a new as-yet-undefined (VAR_UNDEFINED) 
- *      variable structure is created, entered into a hash table, and returned.
- *
- *      If the current CallFrame corresponds to a proc and the variable found is
- *      one of the compiledLocals, its index is placed in *indexPtr. Otherwise,
- *      *indexPtr will be set to (according to the needs of TclObjLookupVar):
- *               -1 a global reference
- *               -2 a reference to a namespace variable
- *               -3 a non-cachable reference, i.e., one of:
- *                    . non-indexed local var
- *                    . a reference of unknown origin;
- *                    . resolution by a namespace or interp resolver
+ *	varName, or NULL if the variable couldn't be found. If the variable
+ *	can't be found and create is 1, a new as-yet-undefined (VAR_UNDEFINED)
+ *	variable structure is created, entered into a hash table, and
+ *	returned.
+ *
+ *	If the current CallFrame corresponds to a proc and the variable found
+ *	is one of the compiledLocals, its index is placed in *indexPtr.
+ *	Otherwise, *indexPtr will be set to (according to the needs of
+ *	TclObjLookupVar):
+ *	    -1 a global reference
+ *	    -2 a reference to a namespace variable
+ *	    -3 a non-cachable reference, i.e., one of:
+ *		. non-indexed local var
+ *		. a reference of unknown origin;
+ *		. resolution by a namespace or interp resolver
  *
  *	If the variable isn't found and creation wasn't specified, or some
  *	other error occurs, NULL is returned and the corresponding error
- *	message is left in *errMsgPtr. 
+ *	message is left in *errMsgPtr.
  *
- *	Note: it's possible for the variable returned to be VAR_UNDEFINED
- *	even if create is 1 (this only causes the hash table entry to be
- *	created).  For example, the variable might be a global that has been
- *	unset but is still referenced by a procedure, or a variable that has
- *	been unset but it only being kept in existence (if VAR_UNDEFINED) by
- *	a trace.
+ *	Note: it's possible for the variable returned to be VAR_UNDEFINED even
+ *	if create is 1 (this only causes the hash table entry to be created).
+ *	For example, the variable might be a global that has been unset but is
+ *	still referenced by a procedure, or a variable that has been unset but
+ *	it only being kept in existence (if VAR_UNDEFINED) by a trace.
  *
  * Side effects:
  *	A new hashtable entry may be created if create is 1.
+ *	Callers must Incr varNamePtr if they plan to Decr it if create is 1.
  *
  *----------------------------------------------------------------------
  */
 
 Var *
-TclLookupSimpleVar(interp, varName, flags, create, errMsgPtr, indexPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for lookup. */
-    CONST char *varName;        /* This is a simple variable name that could
-				 * representa scalar or an array. */
-    int flags;		        /* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
-				 * LOOKUP_FOR_UPVAR and TCL_LEAVE_ERR_MSG bits 
+TclLookupSimpleVar(
+    Tcl_Interp *interp,		/* Interpreter to use for lookup. */
+    Tcl_Obj *varNamePtr,	/* This is a simple variable name that could
+				 * represent a scalar or an array. */
+    int flags,			/* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * AVOID_RESOLVERS and TCL_LEAVE_ERR_MSG bits
 				 * matter. */
-    CONST int create;		/* If 1, create hash table entry for varname,
-				 * if it doesn't already exist. If 0, return 
+    const int create,		/* If 1, create hash table entry for varname,
+				 * if it doesn't already exist. If 0, return
 				 * error if it doesn't exist. */
-    CONST char **errMsgPtr;
-    int *indexPtr;
-{    
+    const char **errMsgPtr,
+    int *indexPtr)
+{
     Interp *iPtr = (Interp *) interp;
     CallFrame *varFramePtr = iPtr->varFramePtr;
 				/* Points to the procedure call frame whose
-				 * variables are currently in use. Same as
-				 * the current procedure's frame, if any,
-				 * unless an "uplevel" is executing. */
-    Tcl_HashTable *tablePtr;	/* Points to the hashtable, if any, in which
+				 * variables are currently in use. Same as the
+				 * current procedure's frame, if any, unless
+				 * an "uplevel" is executing. */
+    TclVarHashTable *tablePtr;	/* Points to the hashtable, if any, in which
 				 * to look up the variable. */
-    Tcl_Var var;                /* Used to search for global names. */
+    Tcl_Var var;		/* Used to search for global names. */
     Var *varPtr;		/* Points to the Var structure returned for
 				 * the variable. */
     Namespace *varNsPtr, *cxtNsPtr, *dummy1Ptr, *dummy2Ptr;
     ResolverScheme *resPtr;
-    Tcl_HashEntry *hPtr;
-    int new, i, result;
+    int isNew, i, result;
+    const char *varName = TclGetString(varNamePtr);
 
     varPtr = NULL;
-    varNsPtr = NULL;		/* set non-NULL if a nonlocal variable */
+    varNsPtr = NULL;		/* Set non-NULL if a nonlocal variable. */
     *indexPtr = -3;
 
-    if ((flags & TCL_GLOBAL_ONLY) || iPtr->varFramePtr == NULL) {
-        cxtNsPtr = iPtr->globalNsPtr;
+    if (flags & TCL_GLOBAL_ONLY) {
+	cxtNsPtr = iPtr->globalNsPtr;
     } else {
-        cxtNsPtr = iPtr->varFramePtr->nsPtr;
+	cxtNsPtr = iPtr->varFramePtr->nsPtr;
     }
 
     /*
-     * If this namespace has a variable resolver, then give it first
-     * crack at the variable resolution.  It may return a Tcl_Var
-     * value, it may signal to continue onward, or it may signal
-     * an error.
+     * If this namespace has a variable resolver, then give it first crack at
+     * the variable resolution. It may return a Tcl_Var value, it may signal
+     * to continue onward, or it may signal an error.
      */
 
-    if ((cxtNsPtr->varResProc != NULL || iPtr->resolverPtr != NULL) 
-	    && !(flags & LOOKUP_FOR_UPVAR)) {
-        resPtr = iPtr->resolverPtr;
-
-        if (cxtNsPtr->varResProc) {
-            result = (*cxtNsPtr->varResProc)(interp, varName,
+    if ((cxtNsPtr->varResProc != NULL || iPtr->resolverPtr != NULL)
+	    && !(flags & AVOID_RESOLVERS)) {
+	resPtr = iPtr->resolverPtr;
+	if (cxtNsPtr->varResProc) {
+	    result = (*cxtNsPtr->varResProc)(interp, varName,
 		    (Tcl_Namespace *) cxtNsPtr, flags, &var);
-        } else {
-            result = TCL_CONTINUE;
-        }
+	} else {
+	    result = TCL_CONTINUE;
+	}
 
-        while (result == TCL_CONTINUE && resPtr) {
-            if (resPtr->varResProc) {
-                result = (*resPtr->varResProc)(interp, varName,
+	while (result == TCL_CONTINUE && resPtr) {
+	    if (resPtr->varResProc) {
+		result = (*resPtr->varResProc)(interp, varName,
 			(Tcl_Namespace *) cxtNsPtr, flags, &var);
-            }
-            resPtr = resPtr->nextPtr;
-        }
-
-        if (result == TCL_OK) {
-            varPtr = (Var *) var;
-	    return varPtr;
-        } else if (result != TCL_CONTINUE) {
+	    }
+	    resPtr = resPtr->nextPtr;
+	}
+
+	if (result == TCL_OK) {
+	    return (Var *) var;
+	} else if (result != TCL_CONTINUE) {
 	    return NULL;
-        }
+	}
     }
 
     /*
      * Look up varName. Look it up as either a namespace variable or as a
-     * local variable in a procedure call frame (varFramePtr).
-     * Interpret varName as a namespace variable if:
+     * local variable in a procedure call frame (varFramePtr). Interpret
+     * varName as a namespace variable if:
      *    1) so requested by a TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY flag,
      *    2) there is no active frame (we're at the global :: scope),
-     *    3) the active frame was pushed to define the namespace context
-     *       for a "namespace eval" or "namespace inscope" command,
+     *    3) the active frame was pushed to define the namespace context for a
+     *	     "namespace eval" or "namespace inscope" command,
      *    4) the name has namespace qualifiers ("::"s).
-     * Otherwise, if varName is a local variable, search first in the
-     * frame's array of compiler-allocated local variables, then in its
-     * hashtable for runtime-created local variables.
+     * Otherwise, if varName is a local variable, search first in the frame's
+     * array of compiler-allocated local variables, then in its hashtable for
+     * runtime-created local variables.
      *
-     * If create and the variable isn't found, create the variable and,
-     * if necessary, create varFramePtr's local var hashtable.
+     * If create and the variable isn't found, create the variable and, if
+     * necessary, create varFramePtr's local var hashtable.
      */
 
     if (((flags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY)) != 0)
-	    || (varFramePtr == NULL)
-	    || !varFramePtr->isProcCallFrame
+	    || !HasLocalVars(varFramePtr)
 	    || (strstr(varName, "::") != NULL)) {
-	CONST char *tail;
-	int lookGlobal;
-	
-	lookGlobal = (flags & TCL_GLOBAL_ONLY) 
-	    || (cxtNsPtr == iPtr->globalNsPtr)
-	    || ((*varName == ':') && (*(varName+1) == ':'));
+	const char *tail;
+	int lookGlobal = (flags & TCL_GLOBAL_ONLY)
+		|| (cxtNsPtr == iPtr->globalNsPtr)
+		|| ((*varName == ':') && (*(varName+1) == ':'));
+
 	if (lookGlobal) {
 	    *indexPtr = -1;
-	    flags = (flags | TCL_GLOBAL_ONLY) & ~(TCL_NAMESPACE_ONLY|LOOKUP_FOR_UPVAR);
+	    flags = (flags | TCL_GLOBAL_ONLY) & ~TCL_NAMESPACE_ONLY;
 	} else {
-	    if (flags & LOOKUP_FOR_UPVAR) {
-		flags = (flags | TCL_NAMESPACE_ONLY) & ~LOOKUP_FOR_UPVAR;
+	    if (flags & AVOID_RESOLVERS) {
+		flags = (flags | TCL_NAMESPACE_ONLY);
 	    }
 	    if (flags & TCL_NAMESPACE_ONLY) {
 		*indexPtr = -2;
 	    }
-	} 
+	}
 
 	/*
-	 * Don't pass TCL_LEAVE_ERR_MSG, we may yet create the variable,
-	 * or otherwise generate our own error!
+	 * Don't pass TCL_LEAVE_ERR_MSG, we may yet create the variable, or
+	 * otherwise generate our own error!
 	 */
-	var = Tcl_FindNamespaceVar(interp, varName, (Tcl_Namespace *) cxtNsPtr,
-		flags & ~TCL_LEAVE_ERR_MSG);
-	if (var != (Tcl_Var) NULL) {
-            varPtr = (Var *) var;
-        }
+
+	varPtr = (Var *) ObjFindNamespaceVar(interp, varNamePtr,
+		(Tcl_Namespace *) cxtNsPtr,
+		(flags | AVOID_RESOLVERS) & ~TCL_LEAVE_ERR_MSG);
 	if (varPtr == NULL) {
-	    if (create) {   /* var wasn't found so create it  */
+	    Tcl_Obj *tailPtr;
+
+	    if (create) {	/* Var wasn't found so create it. */
 		TclGetNamespaceForQualName(interp, varName, cxtNsPtr,
 			flags, &varNsPtr, &dummy1Ptr, &dummy2Ptr, &tail);
 		if (varNsPtr == NULL) {
 		    *errMsgPtr = badNamespace;
 		    return NULL;
-		}
-		if (tail == NULL) {
+		} else if (tail == NULL) {
 		    *errMsgPtr = missingName;
 		    return NULL;
 		}
-		hPtr = Tcl_CreateHashEntry(&varNsPtr->varTable, tail, &new);
-		varPtr = NewVar();
-		Tcl_SetHashValue(hPtr, varPtr);
-		varPtr->hPtr = hPtr;
-		varPtr->nsPtr = varNsPtr;
-		if ((lookGlobal)  || (varNsPtr == NULL)) {
+		if (tail != varName) {
+		    tailPtr = Tcl_NewStringObj(tail, -1);
+		} else {
+		    tailPtr = varNamePtr;
+		}
+		varPtr = VarHashCreateVar(&varNsPtr->varTable, tailPtr,
+			&isNew);
+		if (lookGlobal) {
 		    /*
 		     * The variable was created starting from the global
-		     * namespace: a global reference is returned even if 
-		     * it wasn't explicitly requested.
+		     * namespace: a global reference is returned even if it
+		     * wasn't explicitly requested.
 		     */
+
 		    *indexPtr = -1;
 		} else {
 		    *indexPtr = -2;
 		}
-	    } else {		/* var wasn't found and not to create it */
+	    } else {		/* Var wasn't found and not to create it. */
 		*errMsgPtr = noSuchVar;
 		return NULL;
 	    }
 	}
-    } else {			/* local var: look in frame varFramePtr */
-	Proc *procPtr = varFramePtr->procPtr;
-	int localCt = procPtr->numCompiledLocals;
-	CompiledLocal *localPtr = procPtr->firstLocalPtr;
-	Var *localVarPtr = varFramePtr->compiledLocals;
-	int varNameLen = strlen(varName);
-	
-	for (i = 0;  i < localCt;  i++) {
-	    if (!TclIsVarTemporary(localPtr)) {
-		register char *localName = localVarPtr->name;
+    } else {			/* Local var: look in frame varFramePtr. */
+	int localCt = varFramePtr->numCompiledLocals;
+	Tcl_Obj **objPtrPtr = &varFramePtr->localCachePtr->varName0;
+
+	for (i=0 ; i<localCt ; i++, objPtrPtr++) {
+	    register Tcl_Obj *objPtr = *objPtrPtr;
+
+	    if (objPtr) {
+		char *localName = TclGetString(objPtr);
+
 		if ((varName[0] == localName[0])
-		        && (varNameLen == localPtr->nameLength)
-		        && (strcmp(varName, localName) == 0)) {
+			&& (strcmp(varName, localName) == 0)) {
 		    *indexPtr = i;
-		    return localVarPtr;
+		    return (Var *) &varFramePtr->compiledLocals[i];
 		}
 	    }
-	    localVarPtr++;
-	    localPtr = localPtr->nextPtr;
 	}
 	tablePtr = varFramePtr->varTablePtr;
 	if (create) {
 	    if (tablePtr == NULL) {
-		tablePtr = (Tcl_HashTable *)
-		    ckalloc(sizeof(Tcl_HashTable));
-		Tcl_InitHashTable(tablePtr, TCL_STRING_KEYS);
+		tablePtr = (TclVarHashTable *)
+			ckalloc(sizeof(TclVarHashTable));
+		TclInitVarHashTable(tablePtr, NULL);
 		varFramePtr->varTablePtr = tablePtr;
 	    }
-	    hPtr = Tcl_CreateHashEntry(tablePtr, varName, &new);
-	    if (new) {
-		varPtr = NewVar();
-		Tcl_SetHashValue(hPtr, varPtr);
-		varPtr->hPtr = hPtr;
-		varPtr->nsPtr = NULL; /* a local variable */
-	    } else {
-		varPtr = (Var *) Tcl_GetHashValue(hPtr);
-	    }
+	    varPtr = VarHashCreateVar(tablePtr, varNamePtr, &isNew);
 	} else {
-	    hPtr = NULL;
+	    varPtr = NULL;
 	    if (tablePtr != NULL) {
-		hPtr = Tcl_FindHashEntry(tablePtr, varName);
+		varPtr = VarHashFindVar(tablePtr, varNamePtr);
 	    }
-	    if (hPtr == NULL) {
+	    if (varPtr == NULL) {
 		*errMsgPtr = noSuchVar;
-		return NULL;
 	    }
-	    varPtr = (Var *) Tcl_GetHashValue(hPtr);
 	}
     }
     return varPtr;
@@ -870,69 +1085,75 @@ TclLookupSimpleVar(interp, varName, flags, create, errMsgPtr, indexPtr)
  *
  * TclLookupArrayElement --
  *
- *	This procedure is used to locate a variable which is in an array's 
- *      hashtable given a pointer to the array's Var structure and the 
- *      element's name.
+ *	This function is used to locate a variable which is in an array's
+ *	hashtable given a pointer to the array's Var structure and the
+ *	element's name.
  *
  * Results:
- *	The return value is a pointer to the variable structure , or NULL if 
- *      the variable couldn't be found. 
+ *	The return value is a pointer to the variable structure , or NULL if
+ *	the variable couldn't be found.
  *
- *      If arrayPtr points to a variable that isn't an array and createPart1 
- *      is 1, the corresponding variable will be converted to an array. 
- *      Otherwise, NULL is returned and an error message is left in
- *	the interp's result if TCL_LEAVE_ERR_MSG is set in flags.
+ *	If arrayPtr points to a variable that isn't an array and createPart1
+ *	is 1, the corresponding variable will be converted to an array.
+ *	Otherwise, NULL is returned and an error message is left in the
+ *	interp's result if TCL_LEAVE_ERR_MSG is set in flags.
  *
- *      If the variable is not found and createPart2 is 1, the variable is
- *      created. Otherwise, NULL is returned and an error message is left in
+ *	If the variable is not found and createPart2 is 1, the variable is
+ *	created. Otherwise, NULL is returned and an error message is left in
  *	the interp's result if TCL_LEAVE_ERR_MSG is set in flags.
  *
- *	Note: it's possible for the variable returned to be VAR_UNDEFINED
- *	even if createPart1 or createPart2 are 1 (these only cause the hash
- *	table entry or array to be created). For example, the variable might
- *	be a global that has been unset but is still referenced by a
- *	procedure, or a variable that has been unset but it only being kept
- *	in existence (if VAR_UNDEFINED) by a trace.
+ *	Note: it's possible for the variable returned to be VAR_UNDEFINED even
+ *	if createPart1 or createPart2 are 1 (these only cause the hash table
+ *	entry or array to be created). For example, the variable might be a
+ *	global that has been unset but is still referenced by a procedure, or
+ *	a variable that has been unset but it only being kept in existence (if
+ *	VAR_UNDEFINED) by a trace.
  *
  * Side effects:
- *      The variable at arrayPtr may be converted to be an array if 
- *      createPart1 is 1. A new hashtable entry may be created if createPart2 
- *      is 1.
+ *	The variable at arrayPtr may be converted to be an array if
+ *	createPart1 is 1. A new hashtable entry may be created if createPart2
+ *	is 1.
+ *	When createElem is 1, callers must incr elNamePtr if they plan
+ *	to decr it.
  *
  *----------------------------------------------------------------------
  */
 
 Var *
-TclLookupArrayElement(interp, arrayName, elName, flags, msg, createArray, createElem, arrayPtr)
-    Tcl_Interp *interp;		/* Interpreter to use for lookup. */
-    CONST char *arrayName;	        /* This is the name of the array. */
-    CONST char *elName;		/* Name of element within array. */
-    CONST int flags;		/* Only TCL_LEAVE_ERR_MSG bit matters. */
-    CONST char *msg;			/* Verb to use in error messages, e.g.
-				 * "read" or "set". Only needed if
-				 * TCL_LEAVE_ERR_MSG is set in flags. */
-    CONST int createArray;	/* If 1, transform arrayName to be an array
-				 * if it isn't one yet and the transformation 
-				 * is possible. If 0, return error if it 
-				 * isn't already an array. */
-    CONST int createElem;	/* If 1, create hash table entry for the 
-				 * element, if it doesn't already exist. If
-				 * 0, return error if it doesn't exist. */
-    Var *arrayPtr;	        /* Pointer to the array's Var structure. */
+TclLookupArrayElement(
+    Tcl_Interp *interp,		/* Interpreter to use for lookup. */
+    Tcl_Obj *arrayNamePtr,	/* This is the name of the array, or NULL if
+				 * index>= 0. */
+    Tcl_Obj *elNamePtr,		/* Name of element within array. */
+    const int flags,		/* Only TCL_LEAVE_ERR_MSG bit matters. */
+    const char *msg,		/* Verb to use in error messages, e.g. "read"
+				 * or "set". Only needed if TCL_LEAVE_ERR_MSG
+				 * is set in flags. */
+    const int createArray,	/* If 1, transform arrayName to be an array if
+				 * it isn't one yet and the transformation is
+				 * possible. If 0, return error if it isn't
+				 * already an array. */
+    const int createElem,	/* If 1, create hash table entry for the
+				 * element, if it doesn't already exist. If 0,
+				 * return error if it doesn't exist. */
+    Var *arrayPtr,		/* Pointer to the array's Var structure. */
+    int index)			/* If >=0, the index of the local array. */
 {
-    Tcl_HashEntry *hPtr;
-    int new;
+    int isNew;
     Var *varPtr;
+    TclVarHashTable *tablePtr;
+    Namespace *nsPtr;
 
     /*
-     * We're dealing with an array element. Make sure the variable is an
-     * array and look up the element (create the element if desired).
+     * We're dealing with an array element. Make sure the variable is an array
+     * and look up the element (create the element if desired).
      */
 
     if (TclIsVarUndefined(arrayPtr) && !TclIsVarArrayElement(arrayPtr)) {
 	if (!createArray) {
 	    if (flags & TCL_LEAVE_ERR_MSG) {
-		VarErrMsg(interp, arrayName, elName, msg, noSuchVar);
+		TclObjVarErrMsg(interp, arrayNamePtr, elNamePtr, msg,
+			noSuchVar, index);
 	    }
 	    return NULL;
 	}
@@ -941,47 +1162,54 @@ TclLookupArrayElement(interp, arrayName, elName, flags, msg, createArray, create
 	 * Make sure we are not resurrecting a namespace variable from a
 	 * deleted namespace!
 	 */
-	if ((arrayPtr->flags & VAR_IN_HASHTABLE) && (arrayPtr->hPtr == NULL)) {
+
+	if (TclIsVarDeadHash(arrayPtr)) {
 	    if (flags & TCL_LEAVE_ERR_MSG) {
-		VarErrMsg(interp, arrayName, elName, msg, danglingVar);
+		TclObjVarErrMsg(interp, arrayNamePtr, elNamePtr, msg,
+			danglingVar, index);
 	    }
 	    return NULL;
 	}
 
 	TclSetVarArray(arrayPtr);
-	TclClearVarUndefined(arrayPtr);
-	arrayPtr->value.tablePtr =
-	    (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
-	Tcl_InitHashTable(arrayPtr->value.tablePtr, TCL_STRING_KEYS);
+	tablePtr = (TclVarHashTable *) ckalloc(sizeof(TclVarHashTable));
+	arrayPtr->value.tablePtr = tablePtr;
+
+	if (TclIsVarInHash(arrayPtr) && TclGetVarNsPtr(arrayPtr)) {
+	    nsPtr = TclGetVarNsPtr(arrayPtr);
+	} else {
+	    nsPtr = NULL;
+	}
+	TclInitVarHashTable(arrayPtr->value.tablePtr, nsPtr);
     } else if (!TclIsVarArray(arrayPtr)) {
 	if (flags & TCL_LEAVE_ERR_MSG) {
-	    VarErrMsg(interp, arrayName, elName, msg, needArray);
+	    TclObjVarErrMsg(interp, arrayNamePtr, elNamePtr, msg, needArray,
+		    index);
 	}
 	return NULL;
     }
 
     if (createElem) {
-	hPtr = Tcl_CreateHashEntry(arrayPtr->value.tablePtr, elName, &new);
-	if (new) {
-	    if (arrayPtr->searchPtr != NULL) {
-		DeleteSearches(arrayPtr);
+	varPtr = VarHashCreateVar(arrayPtr->value.tablePtr, elNamePtr,
+		&isNew);
+	if (isNew) {
+	    if (arrayPtr->flags & VAR_SEARCH_ACTIVE) {
+		DeleteSearches((Interp *) interp, arrayPtr);
 	    }
-	    varPtr = NewVar();
-	    Tcl_SetHashValue(hPtr, varPtr);
-	    varPtr->hPtr = hPtr;
-	    varPtr->nsPtr = arrayPtr->nsPtr;
 	    TclSetVarArrayElement(varPtr);
 	}
     } else {
-	hPtr = Tcl_FindHashEntry(arrayPtr->value.tablePtr, elName);
-	if (hPtr == NULL) {
+	varPtr = VarHashFindVar(arrayPtr->value.tablePtr, elNamePtr);
+	if (varPtr == NULL) {
 	    if (flags & TCL_LEAVE_ERR_MSG) {
-		VarErrMsg(interp, arrayName, elName, msg, noSuchElement);
+		TclObjVarErrMsg(interp, arrayNamePtr, elNamePtr, msg,
+			noSuchElement, index);
+		Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ELEMENT",
+			TclGetString(elNamePtr), NULL);
 	    }
-	    return NULL;
 	}
     }
-    return (Var *) Tcl_GetHashValue(hPtr);
+    return varPtr;
 }
 
 /*
@@ -993,9 +1221,9 @@ TclLookupArrayElement(interp, arrayName, elName, flags, msg, createArray, create
  *
  * Results:
  *	The return value points to the current value of varName as a string.
- *	If the variable is not defined or can't be read because of a clash
- *	in array usage then a NULL pointer is returned and an error message
- *	is left in the interp's result if the TCL_LEAVE_ERR_MSG flag is set.
+ *	If the variable is not defined or can't be read because of a clash in
+ *	array usage then a NULL pointer is returned and an error message is
+ *	left in the interp's result if the TCL_LEAVE_ERR_MSG flag is set.
  *	Note: the return value is only valid up until the next change to the
  *	variable; if you depend on the value lasting longer than that, then
  *	make yourself a private copy.
@@ -1006,16 +1234,16 @@ TclLookupArrayElement(interp, arrayName, elName, flags, msg, createArray, create
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_GetVar(interp, varName, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which varName is
-				 * to be looked up. */
-    CONST char *varName;	/* Name of a variable in interp. */
-    int flags;			/* OR-ed combination of TCL_GLOBAL_ONLY,
+const char *
+Tcl_GetVar(
+    Tcl_Interp *interp,		/* Command interpreter in which varName is to
+				 * be looked up. */
+    const char *varName,	/* Name of a variable in interp. */
+    int flags)			/* OR-ed combination of TCL_GLOBAL_ONLY,
 				 * TCL_NAMESPACE_ONLY or TCL_LEAVE_ERR_MSG
 				 * bits. */
 {
-    return Tcl_GetVar2(interp, varName, (char *) NULL, flags);
+    return Tcl_GetVar2(interp, varName, NULL, flags);
 }
 
 /*
@@ -1023,17 +1251,17 @@ Tcl_GetVar(interp, varName, flags)
  *
  * Tcl_GetVar2 --
  *
- *	Return the value of a Tcl variable as a string, given a two-part
- *	name consisting of array name and element within array.
+ *	Return the value of a Tcl variable as a string, given a two-part name
+ *	consisting of array name and element within array.
  *
  * Results:
- *	The return value points to the current value of the variable given
- *	by part1 and part2 as a string. If the specified variable doesn't
- *	exist, or if there is a clash in array usage, then NULL is returned
- *	and a message will be left in the interp's result if the
- *	TCL_LEAVE_ERR_MSG flag is set. Note: the return value is only valid
- *	up until the next change to the variable; if you depend on the value
- *	lasting longer than that, then make yourself a private copy.
+ *	The return value points to the current value of the variable given by
+ *	part1 and part2 as a string. If the specified variable doesn't exist,
+ *	or if there is a clash in array usage, then NULL is returned and a
+ *	message will be left in the interp's result if the TCL_LEAVE_ERR_MSG
+ *	flag is set. Note: the return value is only valid up until the next
+ *	change to the variable; if you depend on the value lasting longer than
+ *	that, then make yourself a private copy.
  *
  * Side effects:
  *	None.
@@ -1041,17 +1269,17 @@ Tcl_GetVar(interp, varName, flags)
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_GetVar2(interp, part1, part2, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be looked up. */
-    CONST char *part1;		/* Name of an array (if part2 is non-NULL)
-				 * or the name of a variable. */
-    CONST char *part2;		/* If non-NULL, gives the name of an element
+const char *
+Tcl_GetVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be looked up. */
+    const char *part1,		/* Name of an array (if part2 is non-NULL) or
+				 * the name of a variable. */
+    const char *part2,		/* If non-NULL, gives the name of an element
 				 * in the array part1. */
-    int flags;			/* OR-ed combination of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY and TCL_LEAVE_ERR_MSG
-                                 * bits. */
+    int flags)			/* OR-ed combination of TCL_GLOBAL_ONLY,
+				 * TCL_NAMESPACE_ONLY and TCL_LEAVE_ERR_MSG *
+				 * bits. */
 {
     Tcl_Obj *objPtr;
 
@@ -1067,8 +1295,8 @@ Tcl_GetVar2(interp, part1, part2, flags)
  *
  * Tcl_GetVar2Ex --
  *
- *	Return the value of a Tcl variable as a Tcl object, given a
- *	two-part name consisting of array name and element within array.
+ *	Return the value of a Tcl variable as a Tcl object, given a two-part
+ *	name consisting of array name and element within array.
  *
  * Results:
  *	The return value points to the current object value of the variable
@@ -1078,35 +1306,39 @@ Tcl_GetVar2(interp, part1, part2, flags)
  *	TCL_LEAVE_ERR_MSG flag is set.
  *
  * Side effects:
- *	The ref count for the returned object is _not_ incremented to
- *	reflect the returned reference; if you want to keep a reference to
- *	the object you must increment its ref count yourself.
+ *	The ref count for the returned object is _not_ incremented to reflect
+ *	the returned reference; if you want to keep a reference to the object
+ *	you must increment its ref count yourself.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_GetVar2Ex(interp, part1, part2, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be looked up. */
-    CONST char *part1;		/* Name of an array (if part2 is non-NULL)
-				 * or the name of a variable. */
-    CONST char *part2;		/* If non-NULL, gives the name of an element
+Tcl_GetVar2Ex(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be looked up. */
+    const char *part1,		/* Name of an array (if part2 is non-NULL) or
+				 * the name of a variable. */
+    const char *part2,		/* If non-NULL, gives the name of an element
 				 * in the array part1. */
-    int flags;			/* OR-ed combination of TCL_GLOBAL_ONLY,
-				 * and TCL_LEAVE_ERR_MSG bits. */
+    int flags)			/* OR-ed combination of TCL_GLOBAL_ONLY, and
+				 * TCL_LEAVE_ERR_MSG bits. */
 {
-    Var *varPtr, *arrayPtr;
+    Tcl_Obj *resPtr, *part2Ptr = NULL, *part1Ptr = Tcl_NewStringObj(part1, -1);
 
-    /* Filter to pass through only the flags this interface supports. */
-    flags &= (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG);
-    varPtr = TclLookupVar(interp, part1, part2, flags, "read",
-            /*createPart1*/ 0, /*createPart2*/ 1, &arrayPtr);
-    if (varPtr == NULL) {
-	return NULL;
+    if (part2) {
+	part2Ptr = Tcl_NewStringObj(part2, -1);
+	Tcl_IncrRefCount(part2Ptr);
     }
 
-    return TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags);
+    resPtr = Tcl_ObjGetVar2(interp, part1Ptr, part2Ptr, flags);
+
+    Tcl_DecrRefCount(part1Ptr);
+    if (part2Ptr) {
+	Tcl_DecrRefCount(part2Ptr);
+    }
+
+    return resPtr;
 }
 
 /*
@@ -1114,8 +1346,8 @@ Tcl_GetVar2Ex(interp, part1, part2, flags)
  *
  * Tcl_ObjGetVar2 --
  *
- *	Return the value of a Tcl variable as a Tcl object, given a
- *	two-part name consisting of array name and element within array.
+ *	Return the value of a Tcl variable as a Tcl object, given a two-part
+ *	name consisting of array name and element within array.
  *
  * Results:
  *	The return value points to the current object value of the variable
@@ -1125,41 +1357,43 @@ Tcl_GetVar2Ex(interp, part1, part2, flags)
  *	TCL_LEAVE_ERR_MSG flag is set.
  *
  * Side effects:
- *	The ref count for the returned object is _not_ incremented to
- *	reflect the returned reference; if you want to keep a reference to
- *	the object you must increment its ref count yourself.
+ *	The ref count for the returned object is _not_ incremented to reflect
+ *	the returned reference; if you want to keep a reference to the object
+ *	you must increment its ref count yourself.
+ *
+ *	Callers must incr part2Ptr if they plan to decr it.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_ObjGetVar2(interp, part1Ptr, part2Ptr, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be looked up. */
-    register Tcl_Obj *part1Ptr;	/* Points to an object holding the name of
-				 * an array (if part2 is non-NULL) or the
-				 * name of a variable. */
-    register Tcl_Obj *part2Ptr;	/* If non-null, points to an object holding
+Tcl_ObjGetVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be looked up. */
+    register Tcl_Obj *part1Ptr,	/* Points to an object holding the name of an
+				 * array (if part2 is non-NULL) or the name of
+				 * a variable. */
+    register Tcl_Obj *part2Ptr,	/* If non-null, points to an object holding
 				 * the name of an element in the array
 				 * part1Ptr. */
-    int flags;			/* OR-ed combination of TCL_GLOBAL_ONLY and
+    int flags)			/* OR-ed combination of TCL_GLOBAL_ONLY and
 				 * TCL_LEAVE_ERR_MSG bits. */
 {
     Var *varPtr, *arrayPtr;
-    char *part1, *part2;
 
-    part1 = Tcl_GetString(part1Ptr);
-    part2 = ((part2Ptr == NULL) ? NULL : Tcl_GetString(part2Ptr));
-    
-    /* Filter to pass through only the flags this interface supports. */
+    /*
+     * Filter to pass through only the flags this interface supports.
+     */
+
     flags &= (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG);
-    varPtr = TclObjLookupVar(interp, part1Ptr, part2, flags, "read",
-            /*createPart1*/ 0, /*createPart2*/ 1, &arrayPtr);
+    varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, flags, "read",
+	    /*createPart1*/ 0, /*createPart2*/ 1, &arrayPtr);
     if (varPtr == NULL) {
 	return NULL;
     }
 
-    return TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags);
+    return TclPtrGetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr,
+	    flags, -1);
 }
 
 /*
@@ -1167,50 +1401,53 @@ Tcl_ObjGetVar2(interp, part1Ptr, part2Ptr, flags)
  *
  * TclPtrGetVar --
  *
- *	Return the value of a Tcl variable as a Tcl object, given the
- *      pointers to the variable's (and possibly containing array's) 
- *      VAR structure.
+ *	Return the value of a Tcl variable as a Tcl object, given the pointers
+ *	to the variable's (and possibly containing array's) VAR structure.
  *
  * Results:
  *	The return value points to the current object value of the variable
- *	given by varPtr. If the specified variable doesn't exist, or if there 
- *      is a clash in array usage, then NULL is returned and a message will be 
- *      left in the interpreter's result if the TCL_LEAVE_ERR_MSG flag is set.
+ *	given by varPtr. If the specified variable doesn't exist, or if there
+ *	is a clash in array usage, then NULL is returned and a message will be
+ *	left in the interpreter's result if the TCL_LEAVE_ERR_MSG flag is set.
  *
  * Side effects:
- *	The ref count for the returned object is _not_ incremented to
- *	reflect the returned reference; if you want to keep a reference to
- *	the object you must increment its ref count yourself.
+ *	The ref count for the returned object is _not_ incremented to reflect
+ *	the returned reference; if you want to keep a reference to the object
+ *	you must increment its ref count yourself.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be looked up. */
-    register Var *varPtr;       /* The variable to be read.*/
-    Var *arrayPtr;              /* NULL for scalar variables, pointer to
-				 * the containing array otherwise. */
-    CONST char *part1;		/* Name of an array (if part2 is non-NULL)
-				 * or the name of a variable. */
-    CONST char *part2;		/* If non-NULL, gives the name of an element
+TclPtrGetVar(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be looked up. */
+    register Var *varPtr,	/* The variable to be read.*/
+    Var *arrayPtr,		/* NULL for scalar variables, pointer to the
+				 * containing array otherwise. */
+    Tcl_Obj *part1Ptr,		/* Name of an array (if part2 is non-NULL) or
+				 * the name of a variable. */
+    Tcl_Obj *part2Ptr,		/* If non-NULL, gives the name of an element
 				 * in the array part1. */
-    CONST int flags;		/* OR-ed combination of TCL_GLOBAL_ONLY,
-				 * and TCL_LEAVE_ERR_MSG bits. */
+    const int flags,		/* OR-ed combination of TCL_GLOBAL_ONLY, and
+				 * TCL_LEAVE_ERR_MSG bits. */
+    int index)			/* Index into the local variable table of the
+				 * variable, or -1. Only used when part1Ptr is
+				 * NULL. */
 {
     Interp *iPtr = (Interp *) interp;
-    CONST char *msg;
+    const char *msg;
 
     /*
-     * Invoke any traces that have been set for the variable.
+     * Invoke any read traces that have been set for the variable.
      */
 
-    if ((varPtr->tracePtr != NULL)
-	    || ((arrayPtr != NULL) && (arrayPtr->tracePtr != NULL))) {
-	if (TCL_ERROR == CallVarTraces(iPtr, arrayPtr, varPtr, part1, part2,
+    if ((varPtr->flags & VAR_TRACED_READ)
+	    || (arrayPtr && (arrayPtr->flags & VAR_TRACED_READ))) {
+	if (TCL_ERROR == TclObjCallVarTraces(iPtr, arrayPtr, varPtr,
+		part1Ptr, part2Ptr,
 		(flags & (TCL_NAMESPACE_ONLY|TCL_GLOBAL_ONLY))
-		| TCL_TRACE_READS, (flags & TCL_LEAVE_ERR_MSG))) {
+		| TCL_TRACE_READS, (flags & TCL_LEAVE_ERR_MSG), index)) {
 	    goto errorReturn;
 	}
     }
@@ -1218,31 +1455,31 @@ TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags)
     /*
      * Return the element if it's an existing scalar variable.
      */
-    
+
     if (TclIsVarScalar(varPtr) && !TclIsVarUndefined(varPtr)) {
 	return varPtr->value.objPtr;
     }
-    
+
     if (flags & TCL_LEAVE_ERR_MSG) {
-	if (TclIsVarUndefined(varPtr) && (arrayPtr != NULL)
-	        && !TclIsVarUndefined(arrayPtr)) {
+	if (TclIsVarUndefined(varPtr) && arrayPtr
+		&& !TclIsVarUndefined(arrayPtr)) {
 	    msg = noSuchElement;
 	} else if (TclIsVarArray(varPtr)) {
 	    msg = isArray;
 	} else {
 	    msg = noSuchVar;
 	}
-	VarErrMsg(interp, part1, part2, "read", msg);
+	TclObjVarErrMsg(interp, part1Ptr, part2Ptr, "read", msg, index);
     }
 
     /*
-     * An error. If the variable doesn't exist anymore and no-one's using
-     * it, then free up the relevant structures and hash table entries.
+     * An error. If the variable doesn't exist anymore and no-one's using it,
+     * then free up the relevant structures and hash table entries.
      */
 
-    errorReturn:
+  errorReturn:
     if (TclIsVarUndefined(varPtr)) {
-	CleanupVar(varPtr, arrayPtr);
+	TclCleanupVar(varPtr, arrayPtr);
     }
     return NULL;
 }
@@ -1252,8 +1489,8 @@ TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags)
  *
  * Tcl_SetObjCmd --
  *
- *	This procedure is invoked to process the "set" Tcl command.
- *	See the user documentation for details on what it does.
+ *	This function is invoked to process the "set" Tcl command. See the
+ *	user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl result value.
@@ -1266,23 +1503,22 @@ TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags)
 
 	/* ARGSUSED */
 int
-Tcl_SetObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;			/* Not used. */
-    register Tcl_Interp *interp;	/* Current interpreter. */
-    int objc;				/* Number of arguments. */
-    Tcl_Obj *CONST objv[];		/* Argument objects. */
+Tcl_SetObjCmd(
+    ClientData dummy,		/* Not used. */
+    register Tcl_Interp *interp,/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Obj *varValueObj;
 
     if (objc == 2) {
-	varValueObj = Tcl_ObjGetVar2(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG);
+	varValueObj = Tcl_ObjGetVar2(interp, objv[1], NULL,TCL_LEAVE_ERR_MSG);
 	if (varValueObj == NULL) {
 	    return TCL_ERROR;
 	}
 	Tcl_SetObjResult(interp, varValueObj);
 	return TCL_OK;
     } else if (objc == 3) {
-
 	varValueObj = Tcl_ObjSetVar2(interp, objv[1], NULL, objv[2],
 		TCL_LEAVE_ERR_MSG);
 	if (varValueObj == NULL) {
@@ -1305,33 +1541,33 @@ Tcl_SetObjCmd(dummy, interp, objc, objv)
  *
  * Results:
  *	Returns a pointer to the malloc'ed string which is the character
- *	representation of the variable's new value. The caller must not
- *	modify this string. If the write operation was disallowed then NULL
- *	is returned; if the TCL_LEAVE_ERR_MSG flag is set, then an
- *	explanatory message will be left in the interp's result. Note that the
- *	returned string may not be the same as newValue; this is because
- *	variable traces may modify the variable's value.
+ *	representation of the variable's new value. The caller must not modify
+ *	this string. If the write operation was disallowed then NULL is
+ *	returned; if the TCL_LEAVE_ERR_MSG flag is set, then an explanatory
+ *	message will be left in the interp's result. Note that the returned
+ *	string may not be the same as newValue; this is because variable
+ *	traces may modify the variable's value.
  *
  * Side effects:
- *	If varName is defined as a local or global variable in interp,
- *	its value is changed to newValue. If varName isn't currently
- *	defined, then a new global variable by that name is created.
+ *	If varName is defined as a local or global variable in interp, its
+ *	value is changed to newValue. If varName isn't currently defined, then
+ *	a new global variable by that name is created.
  *
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_SetVar(interp, varName, newValue, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which varName is
-				 * to be looked up. */
-    CONST char *varName;	/* Name of a variable in interp. */
-    CONST char *newValue;	/* New value for varName. */
-    int flags;			/* Various flags that tell how to set value:
-				 * any of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY, TCL_APPEND_VALUE,
-				 * TCL_LIST_ELEMENT, TCL_LEAVE_ERR_MSG. */
+const char *
+Tcl_SetVar(
+    Tcl_Interp *interp,		/* Command interpreter in which varName is to
+				 * be looked up. */
+    const char *varName,	/* Name of a variable in interp. */
+    const char *newValue,	/* New value for varName. */
+    int flags)			/* Various flags that tell how to set value:
+				 * any of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * TCL_APPEND_VALUE, TCL_LIST_ELEMENT,
+				 * TCL_LEAVE_ERR_MSG. */
 {
-    return Tcl_SetVar2(interp, varName, (char *) NULL, newValue, flags);
+    return Tcl_SetVar2(interp, varName, NULL, newValue, flags);
 }
 
 /*
@@ -1339,57 +1575,45 @@ Tcl_SetVar(interp, varName, newValue, flags)
  *
  * Tcl_SetVar2 --
  *
- *      Given a two-part variable name, which may refer either to a
- *      scalar variable or an element of an array, change the value
- *      of the variable.  If the named scalar or array or element
- *      doesn't exist then create one.
+ *	Given a two-part variable name, which may refer either to a scalar
+ *	variable or an element of an array, change the value of the variable.
+ *	If the named scalar or array or element doesn't exist then create one.
  *
  * Results:
  *	Returns a pointer to the malloc'ed string which is the character
- *	representation of the variable's new value. The caller must not
- *	modify this string. If the write operation was disallowed because an
- *	array was expected but not found (or vice versa), then NULL is
- *	returned; if the TCL_LEAVE_ERR_MSG flag is set, then an explanatory
- *	message will be left in the interp's result. Note that the returned
- *	string may not be the same as newValue; this is because variable
- *	traces may modify the variable's value.
+ *	representation of the variable's new value. The caller must not modify
+ *	this string. If the write operation was disallowed because an array
+ *	was expected but not found (or vice versa), then NULL is returned; if
+ *	the TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will be
+ *	left in the interp's result. Note that the returned string may not be
+ *	the same as newValue; this is because variable traces may modify the
+ *	variable's value.
  *
  * Side effects:
- *      The value of the given variable is set. If either the array
- *      or the entry didn't exist then a new one is created.
+ *	The value of the given variable is set. If either the array or the
+ *	entry didn't exist then a new one is created.
  *
  *----------------------------------------------------------------------
  */
 
-CONST char *
-Tcl_SetVar2(interp, part1, part2, newValue, flags)
-    Tcl_Interp *interp;         /* Command interpreter in which variable is
-                                 * to be looked up. */
-    CONST char *part1;          /* If part2 is NULL, this is name of scalar
-                                 * variable. Otherwise it is the name of
-                                 * an array. */
-    CONST char *part2;		/* Name of an element within an array, or
+const char *
+Tcl_SetVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be looked up. */
+    const char *part1,		/* If part2 is NULL, this is name of scalar
+				 * variable. Otherwise it is the name of an
+				 * array. */
+    const char *part2,		/* Name of an element within an array, or
 				 * NULL. */
-    CONST char *newValue;       /* New value for variable. */
-    int flags;                  /* Various flags that tell how to set value:
-				 * any of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY, TCL_APPEND_VALUE,
-				 * TCL_LIST_ELEMENT, or TCL_LEAVE_ERR_MSG */
+    const char *newValue,	/* New value for variable. */
+    int flags)			/* Various flags that tell how to set value:
+				 * any of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * TCL_APPEND_VALUE, TCL_LIST_ELEMENT, or
+				 * TCL_LEAVE_ERR_MSG. */
 {
-    register Tcl_Obj *valuePtr;
-    Tcl_Obj *varValuePtr;
+    Tcl_Obj *varValuePtr = Tcl_SetVar2Ex(interp, part1, part2,
+	    Tcl_NewStringObj(newValue, -1), flags);
 
-    /*
-     * Create an object holding the variable's new value and use
-     * Tcl_SetVar2Ex to actually set the variable.
-     */
-
-    valuePtr = Tcl_NewStringObj(newValue, -1);
-    Tcl_IncrRefCount(valuePtr);
-
-    varValuePtr = Tcl_SetVar2Ex(interp, part1, part2, valuePtr, flags);
-    Tcl_DecrRefCount(valuePtr); /* done with the object */
-    
     if (varValuePtr == NULL) {
 	return NULL;
     }
@@ -1409,10 +1633,10 @@ Tcl_SetVar2(interp, part1, part2, newValue, flags)
  * Results:
  *	Returns a pointer to the Tcl_Obj holding the new value of the
  *	variable. If the write operation was disallowed because an array was
- *	expected but not found (or vice versa), then NULL is returned; if
- *	the TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will
- *	be left in the interpreter's result. Note that the returned object
- *	may not be the same one referenced by newValuePtr; this is because
+ *	expected but not found (or vice versa), then NULL is returned; if the
+ *	TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will be
+ *	left in the interpreter's result. Note that the returned object may
+ *	not be the same one referenced by newValuePtr; this is because
  *	variable traces may modify the variable's value.
  *
  * Side effects:
@@ -1421,46 +1645,49 @@ Tcl_SetVar2(interp, part1, part2, newValue, flags)
  *
  *	The reference count is decremented for any old value of the variable
  *	and incremented for its new value. If the new value for the variable
- *	is not the same one referenced by newValuePtr (perhaps as a result
- *	of a variable trace), then newValuePtr's ref count is left unchanged
- *	by Tcl_SetVar2Ex. newValuePtr's ref count is also left unchanged if
- *	we are appending it as a string value: that is, if "flags" includes
+ *	is not the same one referenced by newValuePtr (perhaps as a result of
+ *	a variable trace), then newValuePtr's ref count is left unchanged by
+ *	Tcl_SetVar2Ex. newValuePtr's ref count is also left unchanged if we
+ *	are appending it as a string value: that is, if "flags" includes
  *	TCL_APPEND_VALUE but not TCL_LIST_ELEMENT.
  *
  *	The reference count for the returned object is _not_ incremented: if
- *	you want to keep a reference to the object you must increment its
- *	ref count yourself.
+ *	you want to keep a reference to the object you must increment its ref
+ *	count yourself.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_SetVar2Ex(interp, part1, part2, newValuePtr, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be found. */
-    CONST char *part1;		/* Name of an array (if part2 is non-NULL)
-				 * or the name of a variable. */
-    CONST char *part2;		/* If non-NULL, gives the name of an element
+Tcl_SetVar2Ex(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be found. */
+    const char *part1,		/* Name of an array (if part2 is non-NULL) or
+				 * the name of a variable. */
+    const char *part2,		/* If non-NULL, gives the name of an element
 				 * in the array part1. */
-    Tcl_Obj *newValuePtr;	/* New value for variable. */
-    int flags;			/* Various flags that tell how to set value:
-				 * any of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY, TCL_APPEND_VALUE,
-				 * TCL_LIST_ELEMENT or TCL_LEAVE_ERR_MSG. */
+    Tcl_Obj *newValuePtr,	/* New value for variable. */
+    int flags)			/* Various flags that tell how to set value:
+				 * any of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * TCL_APPEND_VALUE, TCL_LIST_ELEMENT or
+				 * TCL_LEAVE_ERR_MSG. */
 {
-    Var *varPtr, *arrayPtr;
+    Tcl_Obj *resPtr, *part2Ptr = NULL, *part1Ptr = Tcl_NewStringObj(part1, -1);
 
-    /* Filter to pass through only the flags this interface supports. */
-    flags &= (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG
-	    |TCL_APPEND_VALUE|TCL_LIST_ELEMENT);
-    varPtr = TclLookupVar(interp, part1, part2, flags, "set",
-	    /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
-    if (varPtr == NULL) {
-	return NULL;
+    Tcl_IncrRefCount(part1Ptr);
+    if (part2) {
+	part2Ptr = Tcl_NewStringObj(part2, -1);
+	Tcl_IncrRefCount(part2Ptr);
+    }
+
+    resPtr = Tcl_ObjSetVar2(interp, part1Ptr, part2Ptr, newValuePtr, flags);
+
+    Tcl_DecrRefCount(part1Ptr);
+    if (part2Ptr) {
+	Tcl_DecrRefCount(part2Ptr);
     }
 
-    return TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, 
-            newValuePtr, flags);
+    return resPtr;
 }
 
 /*
@@ -1468,100 +1695,107 @@ Tcl_SetVar2Ex(interp, part1, part2, newValuePtr, flags)
  *
  * Tcl_ObjSetVar2 --
  *
- *	This function is the same as Tcl_SetVar2Ex above, except the
- *	variable names are passed in Tcl object instead of strings.
+ *	This function is the same as Tcl_SetVar2Ex above, except the variable
+ *	names are passed in Tcl object instead of strings.
  *
  * Results:
  *	Returns a pointer to the Tcl_Obj holding the new value of the
  *	variable. If the write operation was disallowed because an array was
- *	expected but not found (or vice versa), then NULL is returned; if
- *	the TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will
- *	be left in the interpreter's result. Note that the returned object
- *	may not be the same one referenced by newValuePtr; this is because
+ *	expected but not found (or vice versa), then NULL is returned; if the
+ *	TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will be
+ *	left in the interpreter's result. Note that the returned object may
+ *	not be the same one referenced by newValuePtr; this is because
  *	variable traces may modify the variable's value.
  *
  * Side effects:
  *	The value of the given variable is set. If either the array or the
  *	entry didn't exist then a new variable is created.
+ *	Callers must Incr part1Ptr if they plan to Decr it.
+ *	Callers must Incr part2Ptr if they plan to Decr it.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-Tcl_ObjSetVar2(interp, part1Ptr, part2Ptr, newValuePtr, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be found. */
-    register Tcl_Obj *part1Ptr;	/* Points to an object holding the name of
-				 * an array (if part2 is non-NULL) or the
-				 * name of a variable. */
-    register Tcl_Obj *part2Ptr;	/* If non-null, points to an object holding
+Tcl_ObjSetVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be found. */
+    register Tcl_Obj *part1Ptr,	/* Points to an object holding the name of an
+				 * array (if part2 is non-NULL) or the name of
+				 * a variable. */
+    register Tcl_Obj *part2Ptr,	/* If non-NULL, points to an object holding
 				 * the name of an element in the array
 				 * part1Ptr. */
-    Tcl_Obj *newValuePtr;	/* New value for variable. */
-    int flags;			/* Various flags that tell how to set value:
-				 * any of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY, TCL_APPEND_VALUE,
-				 * TCL_LIST_ELEMENT, or TCL_LEAVE_ERR_MSG. */
+    Tcl_Obj *newValuePtr,	/* New value for variable. */
+    int flags)			/* Various flags that tell how to set value:
+				 * any of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * TCL_APPEND_VALUE, TCL_LIST_ELEMENT, or
+				 * TCL_LEAVE_ERR_MSG. */
 {
     Var *varPtr, *arrayPtr;
-    char *part1, *part2;
 
-    part1 = TclGetString(part1Ptr);
-    part2 = ((part2Ptr == NULL) ? NULL : Tcl_GetString(part2Ptr));    
+    /*
+     * Filter to pass through only the flags this interface supports.
+     */
 
-    /* Filter to pass through only the flags this interface supports. */
     flags &= (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG
 	    |TCL_APPEND_VALUE|TCL_LIST_ELEMENT);
-    varPtr = TclObjLookupVar(interp, part1Ptr, part2, flags, "set",
+    varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, flags, "set",
 	    /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
     if (varPtr == NULL) {
+	if (newValuePtr->refCount == 0) {
+	    Tcl_DecrRefCount(newValuePtr);
+	}
 	return NULL;
     }
 
-    return TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, 
-            newValuePtr, flags);
+    return TclPtrSetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr,
+	    newValuePtr, flags, -1);
 }
 
-
 /*
  *----------------------------------------------------------------------
  *
  * TclPtrSetVar --
  *
- *	This function is the same as Tcl_SetVar2Ex above, except that
- *      it requires pointers to the variable's Var structs in addition
- *	to the variable names.
+ *	This function is the same as Tcl_SetVar2Ex above, except that it
+ *	requires pointers to the variable's Var structs in addition to the
+ *	variable names.
  *
  * Results:
  *	Returns a pointer to the Tcl_Obj holding the new value of the
  *	variable. If the write operation was disallowed because an array was
- *	expected but not found (or vice versa), then NULL is returned; if
- *	the TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will
- *	be left in the interpreter's result. Note that the returned object
- *	may not be the same one referenced by newValuePtr; this is because
+ *	expected but not found (or vice versa), then NULL is returned; if the
+ *	TCL_LEAVE_ERR_MSG flag is set, then an explanatory message will be
+ *	left in the interpreter's result. Note that the returned object may
+ *	not be the same one referenced by newValuePtr; this is because
  *	variable traces may modify the variable's value.
  *
  * Side effects:
  *	The value of the given variable is set. If either the array or the
  *	entry didn't exist then a new variable is created.
-
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be looked up. */
-    register Var *varPtr;
-    Var *arrayPtr;
-    CONST char *part1;		/* Name of an array (if part2 is non-NULL)
-				 * or the name of a variable. */
-    CONST char *part2;		/* If non-NULL, gives the name of an element
+TclPtrSetVar(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be looked up. */
+    register Var *varPtr,	/* Reference to the variable to set. */
+    Var *arrayPtr,		/* Reference to the array containing the
+				 * variable, or NULL if the variable is a
+				 * scalar. */
+    Tcl_Obj *part1Ptr,		/* Name of an array (if part2 is non-NULL) or
+				 * the name of a variable. NULL if the 'index'
+				 * parameter is >= 0 */
+    Tcl_Obj *part2Ptr,		/* If non-NULL, gives the name of an element
 				 * in the array part1. */
-    Tcl_Obj *newValuePtr;	/* New value for variable. */
-    CONST int flags;		/* OR-ed combination of TCL_GLOBAL_ONLY,
-				 * and TCL_LEAVE_ERR_MSG bits. */
+    Tcl_Obj *newValuePtr,	/* New value for variable. */
+    const int flags,		/* OR-ed combination of TCL_GLOBAL_ONLY, and
+				 * TCL_LEAVE_ERR_MSG bits. */
+    int index)			/* Index of local var where part1 is to be
+				 * found. */
 {
     Interp *iPtr = (Interp *) interp;
     Tcl_Obj *oldValuePtr;
@@ -1570,85 +1804,93 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
 
     /*
      * If the variable is in a hashtable and its hPtr field is NULL, then we
-     * may have an upvar to an array element where the array was deleted
-     * or an upvar to a namespace variable whose namespace was deleted.
-     * Generate an error (allowing the variable to be reset would screw up
-     * our storage allocation and is meaningless anyway).
+     * may have an upvar to an array element where the array was deleted or an
+     * upvar to a namespace variable whose namespace was deleted. Generate an
+     * error (allowing the variable to be reset would screw up our storage
+     * allocation and is meaningless anyway).
      */
 
-    if ((varPtr->flags & VAR_IN_HASHTABLE) && (varPtr->hPtr == NULL)) {
+    if (TclIsVarDeadHash(varPtr)) {
 	if (flags & TCL_LEAVE_ERR_MSG) {
 	    if (TclIsVarArrayElement(varPtr)) {
-		VarErrMsg(interp, part1, part2, "set", danglingElement);
+		TclObjVarErrMsg(interp, part1Ptr, part2Ptr, "set",
+			danglingElement, index);
 	    } else {
-		VarErrMsg(interp, part1, part2, "set", danglingVar);
+		TclObjVarErrMsg(interp, part1Ptr, part2Ptr, "set",
+			danglingVar, index);
 	    }
 	}
-	return NULL;
+	goto earlyError;
     }
 
     /*
      * It's an error to try to set an array variable itself.
      */
 
-    if (TclIsVarArray(varPtr) && !TclIsVarUndefined(varPtr)) {
+    if (TclIsVarArray(varPtr)) {
 	if (flags & TCL_LEAVE_ERR_MSG) {
-	    VarErrMsg(interp, part1, part2, "set", isArray);
+	    TclObjVarErrMsg(interp, part1Ptr, part2Ptr, "set", isArray,index);
 	}
-	return NULL;
+	goto earlyError;
     }
 
     /*
-     * Invoke any read traces that have been set for the variable if it
+     * Invoke any read traces that have been set for the variable if it is
      * requested. This was done for INST_LAPPEND_* but that was inconsistent
      * with the non-bc instruction, and would cause failures trying to
      * lappend to any non-existing ::env var, which is inconsistent with
-     * documented behavior. [Bug #3057639].
+     * documented behavior.  [Bug #3057639]
      */
 
-    if ((flags & TCL_TRACE_READS) && ((varPtr->tracePtr != NULL) 
-	    || ((arrayPtr != NULL) && (arrayPtr->tracePtr != NULL)))) {
-	if (TCL_ERROR == CallVarTraces(iPtr, arrayPtr, varPtr, part1, part2,
-		TCL_TRACE_READS, (flags & TCL_LEAVE_ERR_MSG))) {
-	    return NULL;
+    if ((flags & TCL_TRACE_READS) && ((varPtr->flags & VAR_TRACED_READ)
+	    || (arrayPtr && (arrayPtr->flags & VAR_TRACED_READ)))) {
+	if (TCL_ERROR == TclObjCallVarTraces(iPtr, arrayPtr, varPtr,
+		part1Ptr, part2Ptr,
+		TCL_TRACE_READS, (flags & TCL_LEAVE_ERR_MSG), index)) {
+	    goto earlyError;
 	}
     }
 
     /*
-     * Set the variable's new value. If appending, append the new value to
-     * the variable, either as a list element or as a string. Also, if
-     * appending, then if the variable's old value is unshared we can modify
-     * it directly, otherwise we must create a new copy to modify: this is
-     * "copy on write".
+     * Set the variable's new value. If appending, append the new value to the
+     * variable, either as a list element or as a string. Also, if appending,
+     * then if the variable's old value is unshared we can modify it directly,
+     * otherwise we must create a new copy to modify: this is "copy on write".
      */
 
+    oldValuePtr = varPtr->value.objPtr;
     if (flags & TCL_LIST_ELEMENT && !(flags & TCL_APPEND_VALUE)) {
-	TclSetVarUndefined(varPtr);
+	varPtr->value.objPtr = NULL;
     }
-    oldValuePtr = varPtr->value.objPtr;
     if (flags & (TCL_APPEND_VALUE|TCL_LIST_ELEMENT)) {
+#if 0
+	/*
+	 * Can't happen now!
+	 */
+
 	if (TclIsVarUndefined(varPtr) && (oldValuePtr != NULL)) {
-	    Tcl_DecrRefCount(oldValuePtr);     /* discard old value */
+	    TclDecrRefCount(oldValuePtr);	/* Discard old value. */
 	    varPtr->value.objPtr = NULL;
 	    oldValuePtr = NULL;
 	}
-	if (flags & TCL_LIST_ELEMENT) {	       /* append list element */
+#endif
+	if (flags & TCL_LIST_ELEMENT) {		/* Append list element. */
 	    if (oldValuePtr == NULL) {
 		TclNewObj(oldValuePtr);
 		varPtr->value.objPtr = oldValuePtr;
-		Tcl_IncrRefCount(oldValuePtr); /* since var is referenced */
+		Tcl_IncrRefCount(oldValuePtr);	/* Since var is referenced. */
 	    } else if (Tcl_IsShared(oldValuePtr)) {
 		varPtr->value.objPtr = Tcl_DuplicateObj(oldValuePtr);
-		Tcl_DecrRefCount(oldValuePtr);
+		TclDecrRefCount(oldValuePtr);
 		oldValuePtr = varPtr->value.objPtr;
-		Tcl_IncrRefCount(oldValuePtr); /* since var is referenced */
+		Tcl_IncrRefCount(oldValuePtr);	/* Since var is referenced. */
 	    }
 	    result = Tcl_ListObjAppendElement(interp, oldValuePtr,
 		    newValuePtr);
 	    if (result != TCL_OK) {
-		return NULL;
+		goto earlyError;
 	    }
-	} else {		               /* append string */
+	} else {				/* Append string. */
 	    /*
 	     * We append newValuePtr's bytes but don't change its ref count.
 	     */
@@ -1657,51 +1899,45 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
 		varPtr->value.objPtr = newValuePtr;
 		Tcl_IncrRefCount(newValuePtr);
 	    } else {
-		if (Tcl_IsShared(oldValuePtr)) {   /* append to copy */
+		if (Tcl_IsShared(oldValuePtr)) {	/* Append to copy. */
 		    varPtr->value.objPtr = Tcl_DuplicateObj(oldValuePtr);
-#ifdef TCL_TIP280
+
 		    /*
 		     * TIP #280.
-		     * Ensure that the continuation line data for the
-		     * string is not lost and applies to the extended
-		     * script as well.
+		     * Ensure that the continuation line data for the string
+		     * is not lost and applies to the extended script as well.
 		     */
 		    TclContinuationsCopy (varPtr->value.objPtr, oldValuePtr);
-#endif
+
 		    TclDecrRefCount(oldValuePtr);
 		    oldValuePtr = varPtr->value.objPtr;
-		    Tcl_IncrRefCount(oldValuePtr); /* since var is ref */
+		    Tcl_IncrRefCount(oldValuePtr);	/* Since var is ref */
 		}
 		Tcl_AppendObjToObj(oldValuePtr, newValuePtr);
 	    }
 	}
     } else if (newValuePtr != oldValuePtr) {
 	/*
-	 * In this case we are replacing the value, so we don't need to
-	 * do more than swap the objects.
+	 * In this case we are replacing the value, so we don't need to do
+	 * more than swap the objects.
 	 */
 
 	varPtr->value.objPtr = newValuePtr;
-	Tcl_IncrRefCount(newValuePtr);      /* var is another ref */
+	Tcl_IncrRefCount(newValuePtr);		/* Var is another ref. */
 	if (oldValuePtr != NULL) {
-	    TclDecrRefCount(oldValuePtr);   /* discard old value */
+	    TclDecrRefCount(oldValuePtr);	/* Discard old value. */
 	}
     }
-    TclSetVarScalar(varPtr);
-    TclClearVarUndefined(varPtr);
-    if (arrayPtr != NULL) {
-	TclClearVarUndefined(arrayPtr);
-    }
 
     /*
      * Invoke any write traces for the variable.
      */
 
-    if ((varPtr->tracePtr != NULL)
-	    || ((arrayPtr != NULL) && (arrayPtr->tracePtr != NULL))) {
-	if (TCL_ERROR == CallVarTraces(iPtr, arrayPtr, varPtr, part1, part2,
-	        (flags & (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY))
-		| TCL_TRACE_WRITES, (flags & TCL_LEAVE_ERR_MSG))) {
+    if ((varPtr->flags & VAR_TRACED_WRITE)
+	    || (arrayPtr && (arrayPtr->flags & VAR_TRACED_WRITE))) {
+	if (TCL_ERROR == TclObjCallVarTraces(iPtr, arrayPtr, varPtr, part1Ptr,
+		part2Ptr, (flags & (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY))
+		| TCL_TRACE_WRITES, (flags & TCL_LEAVE_ERR_MSG), index)) {
 	    goto cleanup;
 	}
     }
@@ -1709,7 +1945,7 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
     /*
      * Return the variable's value unless the variable was changed in some
      * gross way by a trace (e.g. it was unset and then recreated as an
-     * array). 
+     * array).
      */
 
     if (TclIsVarScalar(varPtr) && !TclIsVarUndefined(varPtr)) {
@@ -1720,36 +1956,42 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
      * A trace changed the value in some gross way. Return an empty string
      * object.
      */
-    
+
     resultPtr = iPtr->emptyObjPtr;
 
     /*
-     * If the variable doesn't exist anymore and no-one's using it, then
-     * free up the relevant structures and hash table entries.
+     * If the variable doesn't exist anymore and no-one's using it, then free
+     * up the relevant structures and hash table entries.
      */
 
-    cleanup:
+  cleanup:
     if (TclIsVarUndefined(varPtr)) {
-	CleanupVar(varPtr, arrayPtr);
+	TclCleanupVar(varPtr, arrayPtr);
     }
     return resultPtr;
+
+  earlyError:
+    if (newValuePtr->refCount == 0) {
+	Tcl_DecrRefCount(newValuePtr);
+    }
+    goto cleanup;
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclIncrVar2 --
+ * TclIncrObjVar2 --
  *
  *	Given a two-part variable name, which may refer either to a scalar
- *	variable or an element of an array, increment the Tcl object value
- *	of the variable by a specified amount.
+ *	variable or an element of an array, increment the Tcl object value of
+ *	the variable by a specified Tcl_Obj increment value.
  *
  * Results:
  *	Returns a pointer to the Tcl_Obj holding the new value of the
- *	variable. If the specified variable doesn't exist, or there is a
- *	clash in array usage, or an error occurs while executing variable
- *	traces, then NULL is returned and a message will be left in
- *	the interpreter's result.
+ *	variable. If the specified variable doesn't exist, or there is a clash
+ *	in array usage, or an error occurs while executing variable traces,
+ *	then NULL is returned and a message will be left in the interpreter's
+ *	result.
  *
  * Side effects:
  *	The value of the given variable is incremented by the specified
@@ -1757,58 +1999,55 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
  *	variable is created. The ref count for the returned object is _not_
  *	incremented to reflect the returned reference; if you want to keep a
  *	reference to the object you must increment its ref count yourself.
+ *	Callers must Incr part1Ptr if they plan to Decr it.
+ *	Callers must Incr part2Ptr if they plan to Decr it.
  *
  *----------------------------------------------------------------------
  */
 
 Tcl_Obj *
-TclIncrVar2(interp, part1Ptr, part2Ptr, incrAmount, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be found. */
-    Tcl_Obj *part1Ptr;		/* Points to an object holding the name of
-				 * an array (if part2 is non-NULL) or the
-				 * name of a variable. */
-    Tcl_Obj *part2Ptr;		/* If non-null, points to an object holding
+TclIncrObjVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be found. */
+    Tcl_Obj *part1Ptr,		/* Points to an object holding the name of an
+				 * array (if part2 is non-NULL) or the name of
+				 * a variable. */
+    Tcl_Obj *part2Ptr,		/* If non-null, points to an object holding
 				 * the name of an element in the array
 				 * part1Ptr. */
-    long incrAmount;		/* Amount to be added to variable. */
-    int flags;                  /* Various flags that tell how to incr value:
-				 * any of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY, TCL_APPEND_VALUE,
-				 * TCL_LIST_ELEMENT, TCL_LEAVE_ERR_MSG. */
+    Tcl_Obj *incrPtr,		/* Amount to be added to variable. */
+    int flags)			/* Various flags that tell how to incr value:
+				 * any of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * TCL_APPEND_VALUE, TCL_LIST_ELEMENT,
+				 * TCL_LEAVE_ERR_MSG. */
 {
     Var *varPtr, *arrayPtr;
-    char *part1, *part2;
-
-    part1 = TclGetString(part1Ptr);
-    part2 = ((part2Ptr == NULL)? NULL : TclGetString(part2Ptr));
 
-    varPtr = TclObjLookupVar(interp, part1Ptr, part2, flags, "read",
-	    0, 1, &arrayPtr);
+    varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, flags, "read",
+	    1, 1, &arrayPtr);
     if (varPtr == NULL) {
 	Tcl_AddObjErrorInfo(interp,
 		"\n    (reading value of variable to increment)", -1);
 	return NULL;
     }
-    return TclPtrIncrVar(interp, varPtr, arrayPtr, part1, part2,
-	    incrAmount, flags);
+    return TclPtrIncrObjVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr,
+	    incrPtr, flags, -1);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclPtrIncrVar --
+ * TclPtrIncrObjVar --
  *
- *	Given the pointers to a variable and possible containing array, 
- *      increment the Tcl object value of the variable by a specified 
- *      amount.
+ *	Given the pointers to a variable and possible containing array,
+ *	increment the Tcl object value of the variable by a Tcl_Obj increment.
  *
  * Results:
  *	Returns a pointer to the Tcl_Obj holding the new value of the
- *	variable. If the specified variable doesn't exist, or there is a
- *	clash in array usage, or an error occurs while executing variable
- *	traces, then NULL is returned and a message will be left in
- *	the interpreter's result.
+ *	variable. If the specified variable doesn't exist, or there is a clash
+ *	in array usage, or an error occurs while executing variable traces,
+ *	then NULL is returned and a message will be left in the interpreter's
+ *	result.
  *
  * Side effects:
  *	The value of the given variable is incremented by the specified
@@ -1821,81 +2060,70 @@ TclIncrVar2(interp, part1Ptr, part2Ptr, incrAmount, flags)
  */
 
 Tcl_Obj *
-TclPtrIncrVar(interp, varPtr, arrayPtr, part1, part2, incrAmount, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which variable is
-				 * to be found. */
-    Var *varPtr;
-    Var *arrayPtr;
-    CONST char *part1;		/* Points to an object holding the name of
-				 * an array (if part2 is non-NULL) or the
-				 * name of a variable. */
-    CONST char *part2;		/* If non-null, points to an object holding
+TclPtrIncrObjVar(
+    Tcl_Interp *interp,		/* Command interpreter in which variable is to
+				 * be found. */
+    Var *varPtr,		/* Reference to the variable to set. */
+    Var *arrayPtr,		/* Reference to the array containing the
+				 * variable, or NULL if the variable is a
+				 * scalar. */
+    Tcl_Obj *part1Ptr,		/* Points to an object holding the name of an
+				 * array (if part2 is non-NULL) or the name of
+				 * a variable. */
+    Tcl_Obj *part2Ptr,		/* If non-null, points to an object holding
 				 * the name of an element in the array
 				 * part1Ptr. */
-    CONST long incrAmount;	/* Amount to be added to variable. */
-    CONST int flags;            /* Various flags that tell how to incr value:
-				 * any of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY, TCL_APPEND_VALUE,
-				 * TCL_LIST_ELEMENT, TCL_LEAVE_ERR_MSG. */
+    Tcl_Obj *incrPtr,		/* Increment value. */
+/* TODO: Which of these flag values really make sense? */
+    const int flags,		/* Various flags that tell how to incr value:
+				 * any of TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
+				 * TCL_APPEND_VALUE, TCL_LIST_ELEMENT,
+				 * TCL_LEAVE_ERR_MSG. */
+    int index)			/* Index into the local variable table of the
+				 * variable, or -1. Only used when part1Ptr is
+				 * NULL. */
 {
     register Tcl_Obj *varValuePtr;
-    int createdNewObj;		/* Set 1 if var's value object is shared
-				 * so we must increment a copy (i.e. copy
-				 * on write). */
-    long i;
-
-    varValuePtr = TclPtrGetVar(interp, varPtr, arrayPtr, part1, part2, flags);
 
+    if (TclIsVarInHash(varPtr)) {
+	VarHashRefCount(varPtr)++;
+    }
+    varValuePtr = TclPtrGetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr,
+	    flags, index);
+    if (TclIsVarInHash(varPtr)) {
+	VarHashRefCount(varPtr)--;
+    }
     if (varValuePtr == NULL) {
-	Tcl_AddObjErrorInfo(interp,
-		"\n    (reading value of variable to increment)", -1);
-	return NULL;
+	varValuePtr = Tcl_NewIntObj(0);
     }
-
-    /*
-     * Increment the variable's value. If the object is unshared we can
-     * modify it directly, otherwise we must create a new copy to modify:
-     * this is "copy on write". Then free the variable's old string
-     * representation, if any, since it will no longer be valid.
-     */
-
-    createdNewObj = 0;
     if (Tcl_IsShared(varValuePtr)) {
+	/* Copy on write */
 	varValuePtr = Tcl_DuplicateObj(varValuePtr);
-	createdNewObj = 1;
-    }
-    if (varValuePtr->typePtr == &tclWideIntType) {
-	Tcl_WideInt wide;
-	TclGetWide(wide,varValuePtr);
-	Tcl_SetWideIntObj(varValuePtr, wide + Tcl_LongAsWide(incrAmount));
-    } else if (varValuePtr->typePtr == &tclIntType) {
-	i = varValuePtr->internalRep.longValue;
-	Tcl_SetIntObj(varValuePtr, i + incrAmount);
-    } else {
-	/*
-	 * Not an integer or wide internal-rep...
-	 */
-	Tcl_WideInt wide;
-	if (Tcl_GetWideIntFromObj(interp, varValuePtr, &wide) != TCL_OK) {
-	    if (createdNewObj) {
-		Tcl_DecrRefCount(varValuePtr); /* free unneeded copy */
-	    }
+	
+	if (TCL_OK == TclIncrObj(interp, varValuePtr, incrPtr)) {
+	    return TclPtrSetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr,
+		    varValuePtr, flags, index);
+	} else {
+	    Tcl_DecrRefCount(varValuePtr);
 	    return NULL;
 	}
-	if (wide <= Tcl_LongAsWide(LONG_MAX)
-		&& wide >= Tcl_LongAsWide(LONG_MIN)) {
-	    Tcl_SetLongObj(varValuePtr, Tcl_WideAsLong(wide) + incrAmount);
+    } else {
+	/* Unshared - can Incr in place */
+	if (TCL_OK == TclIncrObj(interp, varValuePtr, incrPtr)) {
+
+	    /*
+	     * This seems dumb to write the incremeted value into the var
+	     * after we just adjusted the value in place, but the spec for
+	     * [incr] requires that write traces fire, and making this call
+	     * is the way to make that happen.
+	     */
+
+	    return TclPtrSetVar(interp, varPtr, arrayPtr, part1Ptr, part2Ptr,
+		    varValuePtr, flags, index);
 	} else {
-	    Tcl_SetWideIntObj(varValuePtr, wide + Tcl_LongAsWide(incrAmount));
+	    return NULL;
 	}
     }
-
-    /*
-     * Store the variable's new value and run any write traces.
-     */
-    
-    return TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2,
-	    varValuePtr, flags);
 }
 
 /*
@@ -1906,30 +2134,30 @@ TclPtrIncrVar(interp, varPtr, arrayPtr, part1, part2, incrAmount, flags)
  *	Delete a variable, so that it may not be accessed anymore.
  *
  * Results:
- *	Returns TCL_OK if the variable was successfully deleted, TCL_ERROR
- *	if the variable can't be unset.  In the event of an error,
- *	if the TCL_LEAVE_ERR_MSG flag is set then an error message
- *	is left in the interp's result.
+ *	Returns TCL_OK if the variable was successfully deleted, TCL_ERROR if
+ *	the variable can't be unset. In the event of an error, if the
+ *	TCL_LEAVE_ERR_MSG flag is set then an error message is left in the
+ *	interp's result.
  *
  * Side effects:
- *	If varName is defined as a local or global variable in interp,
- *	it is deleted.
+ *	If varName is defined as a local or global variable in interp, it is
+ *	deleted.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_UnsetVar(interp, varName, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which varName is
-				 * to be looked up. */
-    CONST char *varName;	/* Name of a variable in interp.  May be
-				 * either a scalar name or an array name
-				 * or an element in an array. */
-    int flags;			/* OR-ed combination of any of
+Tcl_UnsetVar(
+    Tcl_Interp *interp,		/* Command interpreter in which varName is to
+				 * be looked up. */
+    const char *varName,	/* Name of a variable in interp. May be either
+				 * a scalar name or an array name or an
+				 * element in an array. */
+    int flags)			/* OR-ed combination of any of
 				 * TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY or
 				 * TCL_LEAVE_ERR_MSG. */
 {
-    return Tcl_UnsetVar2(interp, varName, (char *) NULL, flags);
+    return Tcl_UnsetVar2(interp, varName, NULL, flags);
 }
 
 /*
@@ -1940,42 +2168,49 @@ Tcl_UnsetVar(interp, varName, flags)
  *	Delete a variable, given a 2-part name.
  *
  * Results:
- *	Returns TCL_OK if the variable was successfully deleted, TCL_ERROR
- *	if the variable can't be unset.  In the event of an error,
- *	if the TCL_LEAVE_ERR_MSG flag is set then an error message
- *	is left in the interp's result.
+ *	Returns TCL_OK if the variable was successfully deleted, TCL_ERROR if
+ *	the variable can't be unset. In the event of an error, if the
+ *	TCL_LEAVE_ERR_MSG flag is set then an error message is left in the
+ *	interp's result.
  *
  * Side effects:
- *	If part1 and part2 indicate a local or global variable in interp,
- *	it is deleted.  If part1 is an array name and part2 is NULL, then
- *	the whole array is deleted.
+ *	If part1 and part2 indicate a local or global variable in interp, it
+ *	is deleted. If part1 is an array name and part2 is NULL, then the
+ *	whole array is deleted.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_UnsetVar2(interp, part1, part2, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which varName is
-				 * to be looked up. */
-    CONST char *part1;		/* Name of variable or array. */
-    CONST char *part2;		/* Name of element within array or NULL. */
-    int flags;			/* OR-ed combination of any of
+Tcl_UnsetVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which varName is to
+				 * be looked up. */
+    const char *part1,		/* Name of variable or array. */
+    const char *part2,		/* Name of element within array or NULL. */
+    int flags)			/* OR-ed combination of any of
 				 * TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
 				 * TCL_LEAVE_ERR_MSG. */
 {
     int result;
-    Tcl_Obj *part1Ptr;
+    Tcl_Obj *part2Ptr = NULL, *part1Ptr = Tcl_NewStringObj(part1, -1);
+
+    if (part2) {
+	part2Ptr = Tcl_NewStringObj(part2, -1);
+    }
+
+    /*
+     * Filter to pass through only the flags this interface supports.
+     */
 
-    part1Ptr = Tcl_NewStringObj(part1, -1);
-    Tcl_IncrRefCount(part1Ptr);
-    /* Filter to pass through only the flags this interface supports. */
     flags &= (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG);
-    result = TclObjUnsetVar2(interp, part1Ptr, part2, flags);
-    TclDecrRefCount(part1Ptr);
+    result = TclObjUnsetVar2(interp, part1Ptr, part2Ptr, flags);
 
+    Tcl_DecrRefCount(part1Ptr);
+    if (part2Ptr) {
+	Tcl_DecrRefCount(part2Ptr);
+    }
     return result;
 }
-
 
 /*
  *----------------------------------------------------------------------
@@ -1985,26 +2220,26 @@ Tcl_UnsetVar2(interp, part1, part2, flags)
  *	Delete a variable, given a 2-object name.
  *
  * Results:
- *	Returns TCL_OK if the variable was successfully deleted, TCL_ERROR
- *	if the variable can't be unset.  In the event of an error,
- *	if the TCL_LEAVE_ERR_MSG flag is set then an error message
- *	is left in the interp's result.
+ *	Returns TCL_OK if the variable was successfully deleted, TCL_ERROR if
+ *	the variable can't be unset. In the event of an error, if the
+ *	TCL_LEAVE_ERR_MSG flag is set then an error message is left in the
+ *	interp's result.
  *
  * Side effects:
- *	If part1ptr and part2Ptr indicate a local or global variable in interp,
- *	it is deleted.  If part1Ptr is an array name and part2Ptr is NULL, then
- *	the whole array is deleted.
+ *	If part1ptr and part2Ptr indicate a local or global variable in
+ *	interp, it is deleted. If part1Ptr is an array name and part2Ptr is
+ *	NULL, then the whole array is deleted.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclObjUnsetVar2(interp, part1Ptr, part2, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which varName is
-				 * to be looked up. */
-    Tcl_Obj *part1Ptr;		/* Name of variable or array. */
-    CONST char *part2;		/* Name of element within array or NULL. */
-    int flags;			/* OR-ed combination of any of
+TclObjUnsetVar2(
+    Tcl_Interp *interp,		/* Command interpreter in which varName is to
+				 * be looked up. */
+    Tcl_Obj *part1Ptr,		/* Name of variable or array. */
+    Tcl_Obj *part2Ptr,		/* Name of element within array or NULL. */
+    int flags)			/* OR-ed combination of any of
 				 * TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
 				 * TCL_LEAVE_ERR_MSG. */
 {
@@ -2012,49 +2247,51 @@ TclObjUnsetVar2(interp, part1Ptr, part2, flags)
     Interp *iPtr = (Interp *) interp;
     Var *arrayPtr;
     int result;
-    char *part1;
 
-    part1 = TclGetString(part1Ptr);
-    varPtr = TclObjLookupVar(interp, part1Ptr, part2, flags, "unset",
+    varPtr = TclObjLookupVarEx(interp, part1Ptr, part2Ptr, flags, "unset",
 	    /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
     if (varPtr == NULL) {
 	return TCL_ERROR;
     }
- 
+
     result = (TclIsVarUndefined(varPtr)? TCL_ERROR : TCL_OK);
 
     /*
      * Keep the variable alive until we're done with it. We used to
-     * increase/decrease the refCount for each operation, making it
-     * hard to find [Bug 735335] - caused by unsetting the variable
-     * whose value was the variable's name.
+     * increase/decrease the refCount for each operation, making it hard to
+     * find [Bug 735335] - caused by unsetting the variable whose value was
+     * the variable's name.
      */
-    
-    varPtr->refCount++;
 
-    UnsetVarStruct(varPtr, arrayPtr, iPtr, part1, part2, flags);
+    if (TclIsVarInHash(varPtr)) {
+	VarHashRefCount(varPtr)++;
+    }
+
+    UnsetVarStruct(varPtr, arrayPtr, iPtr, part1Ptr, part2Ptr, flags);
 
     /*
      * It's an error to unset an undefined variable.
      */
-	
+
     if (result != TCL_OK) {
 	if (flags & TCL_LEAVE_ERR_MSG) {
-	    VarErrMsg(interp, part1, part2, "unset", 
-		    ((arrayPtr == NULL) ? noSuchVar : noSuchElement));
+	    TclObjVarErrMsg(interp, part1Ptr, part2Ptr, "unset",
+		    ((arrayPtr == NULL) ? noSuchVar : noSuchElement), -1);
 	}
     }
 
+#if ENABLE_NS_VARNAME_CACHING
     /*
-     * Try to avoid keeping the Var struct allocated due to a tclNsVarNameType 
+     * Try to avoid keeping the Var struct allocated due to a tclNsVarNameType
      * keeping a reference. This removes some additional exteriorisations of
      * [Bug 736729], but may be a good thing independently of the bug.
      */
 
     if (part1Ptr->typePtr == &tclNsVarNameType) {
-	part1Ptr->typePtr->freeIntRepProc(part1Ptr);
+	TclFreeIntRep(part1Ptr);
 	part1Ptr->typePtr = NULL;
     }
+#endif
 
     /*
      * Finally, if the variable is truly not in use then free up its Var
@@ -2062,8 +2299,10 @@ TclObjUnsetVar2(interp, part1Ptr, part2, flags)
      * its value object, if any, was decremented above.
      */
 
-    varPtr->refCount--;
-    CleanupVar(varPtr, arrayPtr);
+    if (TclIsVarInHash(varPtr)) {
+	VarHashRefCount(varPtr)--;
+	CleanupVar(varPtr, arrayPtr);
+    }
     return result;
 }
 
@@ -2081,492 +2320,166 @@ TclObjUnsetVar2(interp, part1Ptr, part2, flags)
  *
  * Side effects:
  *	If the arguments indicate a local or global variable in iPtr, it is
- *      unset and deleted.   
+ *	unset and deleted.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-UnsetVarStruct(varPtr, arrayPtr, iPtr, part1, part2, flags)
-    Var *varPtr;
-    Var *arrayPtr;
-    Interp *iPtr;
-    CONST char *part1;
-    CONST char *part2;
-    int flags;
+UnsetVarStruct(
+    Var *varPtr,
+    Var *arrayPtr,
+    Interp *iPtr,
+    Tcl_Obj *part1Ptr,
+    Tcl_Obj *part2Ptr,
+    int flags)
 {
     Var dummyVar;
-    Var *dummyVarPtr;
-    ActiveVarTrace *activePtr;
+    int traced = TclIsVarTraced(varPtr)
+	    || (arrayPtr && (arrayPtr->flags & VAR_TRACED_UNSET));
 
-    if ((arrayPtr != NULL) && (arrayPtr->searchPtr != NULL)) {
-	DeleteSearches(arrayPtr);
+    if (arrayPtr && (arrayPtr->flags & VAR_SEARCH_ACTIVE)) {
+	DeleteSearches(iPtr, arrayPtr);
+    } else if (varPtr->flags & VAR_SEARCH_ACTIVE) {
+	DeleteSearches(iPtr, varPtr);
     }
 
     /*
-     * For global/upvar variables referenced in procedures, decrement
-     * the reference count on the variable referred to, and free
-     * the referenced variable if it's no longer needed. 
-     */
-
-    if (TclIsVarLink(varPtr)) {
-	Var *linkPtr = varPtr->value.linkPtr;
-	linkPtr->refCount--;
-	if ((linkPtr->refCount == 0) && TclIsVarUndefined(linkPtr)
-		&& (linkPtr->tracePtr == NULL)
-		&& (linkPtr->flags & VAR_IN_HASHTABLE)) {
-	    if (linkPtr->hPtr != NULL) {
-		Tcl_DeleteHashEntry(linkPtr->hPtr);
-	    }
-	    ckfree((char *) linkPtr);
-	}
-    }
-
-    /*
-     * The code below is tricky, because of the possibility that
-     * a trace procedure might try to access a variable being
-     * deleted. To handle this situation gracefully, do things
-     * in three steps:
-     * 1. Copy the contents of the variable to a dummy variable
-     *    structure, and mark the original Var structure as undefined.
+     * The code below is tricky, because of the possibility that a trace
+     * function might try to access a variable being deleted. To handle this
+     * situation gracefully, do things in three steps:
+     * 1. Copy the contents of the variable to a dummy variable structure, and
+     *    mark the original Var structure as undefined.
      * 2. Invoke traces and clean up the variable, using the dummy copy.
-     * 3. If at the end of this the original variable is still
-     *    undefined and has no outstanding references, then delete
-     *	  it (but it could have gotten recreated by a trace).
+     * 3. If at the end of this the original variable is still undefined and
+     *    has no outstanding references, then delete it (but it could have
+     *    gotten recreated by a trace).
      */
 
     dummyVar = *varPtr;
+    dummyVar.flags &= ~VAR_ALL_HASH;
     TclSetVarUndefined(varPtr);
-    TclSetVarScalar(varPtr);
-    varPtr->value.objPtr = NULL; /* dummyVar points to any value object */
-    varPtr->tracePtr = NULL;
-    varPtr->searchPtr = NULL;
 
     /*
-     * Call trace procedures for the variable being deleted. Then delete
-     * its traces. Be sure to abort any other traces for the variable
-     * that are still pending. Special tricks:
-     * 1. We need to increment varPtr's refCount around this: CallVarTraces
+     * Call trace functions for the variable being deleted. Then delete its
+     * traces. Be sure to abort any other traces for the variable that are
+     * still pending. Special tricks:
+     * 1. We need to increment varPtr's refCount around this: TclCallVarTraces
      *    will use dummyVar so it won't increment varPtr's refCount itself.
-     * 2. Turn off the VAR_TRACE_ACTIVE flag in dummyVar: we want to
-     *    call unset traces even if other traces are pending.
+     * 2. Turn off the VAR_TRACE_ACTIVE flag in dummyVar: we want to call
+     *    unset traces even if other traces are pending.
      */
 
-    if ((dummyVar.tracePtr != NULL)
-	    || ((arrayPtr != NULL) && (arrayPtr->tracePtr != NULL))) {
-	dummyVar.flags &= ~VAR_TRACE_ACTIVE;
-	CallVarTraces(iPtr, arrayPtr, &dummyVar, part1, part2,
-		(flags & (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY))
-		| TCL_TRACE_UNSETS, /* leaveErrMsg */ 0);
-	while (dummyVar.tracePtr != NULL) {
-	    VarTrace *tracePtr = dummyVar.tracePtr;
-	    dummyVar.tracePtr = tracePtr->nextPtr;
-	    Tcl_EventuallyFree((ClientData) tracePtr, TCL_DYNAMIC);
-	}
-	for (activePtr = iPtr->activeVarTracePtr;  activePtr != NULL;
-	     activePtr = activePtr->nextPtr) {
-	    if (activePtr->varPtr == varPtr) {
-		activePtr->nextTracePtr = NULL;
-	    }
-	}
-    }
+    if (traced) {
+	VarTrace *tracePtr = NULL;
+	Tcl_HashEntry *tPtr = NULL;
 
-    /*
-     * If the variable is an array, delete all of its elements. This must be
-     * done after calling the traces on the array, above (that's the way
-     * traces are defined). If it is a scalar, "discard" its object
-     * (decrement the ref count of its object, if any).
-     */
-
-    dummyVarPtr = &dummyVar;
-    if (TclIsVarArray(dummyVarPtr) && !TclIsVarUndefined(dummyVarPtr)) {
-	DeleteArray(iPtr, part1, dummyVarPtr, (flags
-		& (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY)) | TCL_TRACE_UNSETS);
-    }
-    if (TclIsVarScalar(dummyVarPtr)
-	    && (dummyVarPtr->value.objPtr != NULL)) {
-	Tcl_Obj *objPtr = dummyVarPtr->value.objPtr;
-	TclDecrRefCount(objPtr);
-	dummyVarPtr->value.objPtr = NULL;
-    }
-
-    /*
-     * If the variable was a namespace variable, decrement its reference count.
-     */
-    
-    if (varPtr->flags & VAR_NAMESPACE_VAR) {
-	varPtr->flags &= ~VAR_NAMESPACE_VAR;
-	varPtr->refCount--;
-    }
-
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_TraceVar --
- *
- *	Arrange for reads and/or writes to a variable to cause a
- *	procedure to be invoked, which can monitor the operations
- *	and/or change their actions.
- *
- * Results:
- *	A standard Tcl return value.
- *
- * Side effects:
- *	A trace is set up on the variable given by varName, such that
- *	future references to the variable will be intermediated by
- *	proc.  See the manual entry for complete details on the calling
- *	sequence for proc.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_TraceVar(interp, varName, flags, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter in which variable is
-				 * to be traced. */
-    CONST char *varName;	/* Name of variable;  may end with "(index)"
-				 * to signify an array reference. */
-    int flags;			/* OR-ed collection of bits, including any
-				 * of TCL_TRACE_READS, TCL_TRACE_WRITES,
-				 * TCL_TRACE_UNSETS, TCL_GLOBAL_ONLY, and
-				 * TCL_NAMESPACE_ONLY. */
-    Tcl_VarTraceProc *proc;	/* Procedure to call when specified ops are
-				 * invoked upon varName. */
-    ClientData clientData;	/* Arbitrary argument to pass to proc. */
-{
-    return Tcl_TraceVar2(interp, varName, (char *) NULL, 
-	    flags, proc, clientData);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_TraceVar2 --
- *
- *	Arrange for reads and/or writes to a variable to cause a
- *	procedure to be invoked, which can monitor the operations
- *	and/or change their actions.
- *
- * Results:
- *	A standard Tcl return value.
- *
- * Side effects:
- *	A trace is set up on the variable given by part1 and part2, such
- *	that future references to the variable will be intermediated by
- *	proc.  See the manual entry for complete details on the calling
- *	sequence for proc.
- *
- *----------------------------------------------------------------------
- */
+	if (TclIsVarTraced(&dummyVar)) {
+	    /*
+	     * Transfer any existing traces on var, IF there are unset traces.
+	     * Otherwise just delete them.
+	     */
 
-int
-Tcl_TraceVar2(interp, part1, part2, flags, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter in which variable is
-				 * to be traced. */
-    CONST char *part1;		/* Name of scalar variable or array. */
-    CONST char *part2;		/* Name of element within array;  NULL means
-				 * trace applies to scalar variable or array
-				 * as-a-whole. */
-    int flags;			/* OR-ed collection of bits, including any
-				 * of TCL_TRACE_READS, TCL_TRACE_WRITES,
-				 * TCL_TRACE_UNSETS, TCL_GLOBAL_ONLY,
-				 * and TCL_NAMESPACE_ONLY. */
-    Tcl_VarTraceProc *proc;	/* Procedure to call when specified ops are
-				 * invoked upon varName. */
-    ClientData clientData;	/* Arbitrary argument to pass to proc. */
-{
-    Var *varPtr, *arrayPtr;
-    register VarTrace *tracePtr;
-    int flagMask;
-    
-    /* 
-     * We strip 'flags' down to just the parts which are relevant to
-     * TclLookupVar, to avoid conflicts between trace flags and
-     * internal namespace flags such as 'FIND_ONLY_NS'.  This can
-     * now occur since we have trace flags with values 0x1000 and higher.
-     */
-    flagMask = TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY;
-    varPtr = TclLookupVar(interp, part1, part2,
-	    (flags & flagMask) | TCL_LEAVE_ERR_MSG,
-	    "trace", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
-    if (varPtr == NULL) {
-	return TCL_ERROR;
-    }
+	    int isNew;
+	    Tcl_HashEntry *tPtr =
+		    Tcl_FindHashEntry(&iPtr->varTraces, (char *) varPtr);
+
+	    tracePtr = Tcl_GetHashValue(tPtr);
+	    varPtr->flags &= ~VAR_ALL_TRACES;
+	    Tcl_DeleteHashEntry(tPtr);
+	    if (dummyVar.flags & VAR_TRACED_UNSET) {
+		tPtr = Tcl_CreateHashEntry(&iPtr->varTraces,
+			(char *) &dummyVar, &isNew);
+		Tcl_SetHashValue(tPtr, tracePtr);
+	    } else {
+		tPtr = NULL;
+	    }
+	}
 
-    /*
-     * Check for a nonsense flag combination.  Note that this is a
-     * panic() because there should be no code path that ever sets
-     * both flags.
-     */
-    if ((flags&TCL_TRACE_RESULT_DYNAMIC) && (flags&TCL_TRACE_RESULT_OBJECT)) {
-	panic("bad result flag combination");
-    }
+	if ((dummyVar.flags & VAR_TRACED_UNSET)
+		|| (arrayPtr && (arrayPtr->flags & VAR_TRACED_UNSET))) {
+	    dummyVar.flags &= ~VAR_TRACE_ACTIVE;
+	    TclObjCallVarTraces(iPtr, arrayPtr, &dummyVar, part1Ptr, part2Ptr,
+		    (flags & (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY))
+			    | TCL_TRACE_UNSETS,
+		    /* leaveErrMsg */ 0, -1);
 
-    /*
-     * Set up trace information.
-     */
+	    /*
+	     * The traces that we just called may have triggered a change in
+	     * the set of traces. [Bug 2629338]
+	     */
 
-    flagMask = TCL_TRACE_READS | TCL_TRACE_WRITES | TCL_TRACE_UNSETS | 
-	TCL_TRACE_ARRAY | TCL_TRACE_RESULT_DYNAMIC | TCL_TRACE_RESULT_OBJECT;
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-    flagMask |= TCL_TRACE_OLD_STYLE;
-#endif
-    tracePtr = (VarTrace *) ckalloc(sizeof(VarTrace));
-    tracePtr->traceProc		= proc;
-    tracePtr->clientData	= clientData;
-    tracePtr->flags		= flags & flagMask;
-    tracePtr->nextPtr		= varPtr->tracePtr;
-    varPtr->tracePtr		= tracePtr;
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_UntraceVar --
- *
- *	Remove a previously-created trace for a variable.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	If there exists a trace for the variable given by varName
- *	with the given flags, proc, and clientData, then that trace
- *	is removed.
- *
- *----------------------------------------------------------------------
- */
+	    tracePtr = NULL;
+	    if (TclIsVarTraced(&dummyVar)) {
+		tPtr = Tcl_FindHashEntry(&iPtr->varTraces, (char *) &dummyVar);
+		tracePtr = Tcl_GetHashValue(tPtr);
+	    }
 
-void
-Tcl_UntraceVar(interp, varName, flags, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *varName;	/* Name of variable; may end with "(index)"
-				 * to signify an array reference. */
-    int flags;			/* OR-ed collection of bits describing
-				 * current trace, including any of
-				 * TCL_TRACE_READS, TCL_TRACE_WRITES,
-				 * TCL_TRACE_UNSETS, TCL_GLOBAL_ONLY
-				 * and TCL_NAMESPACE_ONLY. */
-    Tcl_VarTraceProc *proc;	/* Procedure assocated with trace. */
-    ClientData clientData;	/* Arbitrary argument to pass to proc. */
-{
-    Tcl_UntraceVar2(interp, varName, (char *) NULL, flags, proc, clientData);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_UntraceVar2 --
- *
- *	Remove a previously-created trace for a variable.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	If there exists a trace for the variable given by part1
- *	and part2 with the given flags, proc, and clientData, then
- *	that trace is removed.
- *
- *----------------------------------------------------------------------
- */
+	    if (tPtr) {
+		Tcl_DeleteHashEntry(tPtr);
+	    }
+	}
 
-void
-Tcl_UntraceVar2(interp, part1, part2, flags, proc, clientData)
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *part1;		/* Name of variable or array. */
-    CONST char *part2;		/* Name of element within array;  NULL means
-				 * trace applies to scalar variable or array
-				 * as-a-whole. */
-    int flags;			/* OR-ed collection of bits describing
-				 * current trace, including any of
-				 * TCL_TRACE_READS, TCL_TRACE_WRITES,
-				 * TCL_TRACE_UNSETS, TCL_GLOBAL_ONLY,
-				 * and TCL_NAMESPACE_ONLY. */
-    Tcl_VarTraceProc *proc;	/* Procedure assocated with trace. */
-    ClientData clientData;	/* Arbitrary argument to pass to proc. */
-{
-    register VarTrace *tracePtr;
-    VarTrace *prevPtr;
-    Var *varPtr, *arrayPtr;
-    Interp *iPtr = (Interp *) interp;
-    ActiveVarTrace *activePtr;
-    int flagMask;
-    
-    /*
-     * Set up a mask to mask out the parts of the flags that we are not
-     * interested in now.
-     */
-    flagMask = TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY;
-    varPtr = TclLookupVar(interp, part1, part2, flags & flagMask,
-	    /*msg*/ (char *) NULL,
-	    /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
-    if (varPtr == NULL) {
-	return;
-    }
+	if (tracePtr) {
+	    ActiveVarTrace *activePtr;
 
+	    while (tracePtr) {
+		VarTrace *prevPtr = tracePtr;
 
-    /*
-     * Set up a mask to mask out the parts of the flags that we are not
-     * interested in now.
-     */
-    flagMask = TCL_TRACE_READS | TCL_TRACE_WRITES | TCL_TRACE_UNSETS |
-	TCL_TRACE_ARRAY | TCL_TRACE_RESULT_DYNAMIC | TCL_TRACE_RESULT_OBJECT; 
-#ifndef TCL_REMOVE_OBSOLETE_TRACES
-    flagMask |= TCL_TRACE_OLD_STYLE;
-#endif
-    flags &= flagMask;
-    for (tracePtr = varPtr->tracePtr, prevPtr = NULL;  ;
-	 prevPtr = tracePtr, tracePtr = tracePtr->nextPtr) {
-	if (tracePtr == NULL) {
-	    return;
-	}
-	if ((tracePtr->traceProc == proc) && (tracePtr->flags == flags)
-		&& (tracePtr->clientData == clientData)) {
-	    break;
+		tracePtr = tracePtr->nextPtr;
+		prevPtr->nextPtr = NULL;
+		Tcl_EventuallyFree((ClientData) prevPtr, TCL_DYNAMIC);
+	    }
+	    for (activePtr = iPtr->activeVarTracePtr;  activePtr != NULL;
+		    activePtr = activePtr->nextPtr) {
+		if (activePtr->varPtr == varPtr) {
+		    activePtr->nextTracePtr = NULL;
+		}
+	    }
+	    dummyVar.flags &= ~VAR_ALL_TRACES;
 	}
     }
 
-    /*
-     * The code below makes it possible to delete traces while traces
-     * are active: it makes sure that the deleted trace won't be
-     * processed by CallVarTraces.
-     */
-
-    for (activePtr = iPtr->activeVarTracePtr;  activePtr != NULL;
-	 activePtr = activePtr->nextPtr) {
-	if (activePtr->nextTracePtr == tracePtr) {
-	    activePtr->nextTracePtr = tracePtr->nextPtr;
-	}
-    }
-    if (prevPtr == NULL) {
-	varPtr->tracePtr = tracePtr->nextPtr;
-    } else {
-	prevPtr->nextPtr = tracePtr->nextPtr;
-    }
-    Tcl_EventuallyFree((ClientData) tracePtr, TCL_DYNAMIC);
+    if (TclIsVarScalar(&dummyVar) && (dummyVar.value.objPtr != NULL)) {
+	/*
+	 * Decrement the ref count of the var's value.
+	 */
 
-    /*
-     * If this is the last trace on the variable, and the variable is
-     * unset and unused, then free up the variable.
-     */
+	Tcl_Obj *objPtr = dummyVar.value.objPtr;
 
-    if (TclIsVarUndefined(varPtr)) {
-	CleanupVar(varPtr, (Var *) NULL);
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_VarTraceInfo --
- *
- *	Return the clientData value associated with a trace on a
- *	variable.  This procedure can also be used to step through
- *	all of the traces on a particular variable that have the
- *	same trace procedure.
- *
- * Results:
- *	The return value is the clientData value associated with
- *	a trace on the given variable.  Information will only be
- *	returned for a trace with proc as trace procedure.  If
- *	the clientData argument is NULL then the first such trace is
- *	returned;  otherwise, the next relevant one after the one
- *	given by clientData will be returned.  If the variable
- *	doesn't exist, or if there are no (more) traces for it,
- *	then NULL is returned.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
+	TclDecrRefCount(objPtr);
+    } else if (TclIsVarArray(&dummyVar)) {
+	/*
+	 * If the variable is an array, delete all of its elements. This must
+	 * be done after calling and deleting the traces on the array, above
+	 * (that's the way traces are defined). If the array name is not
+	 * present and is required for a trace on some element, it will be
+	 * computed at DeleteArray.
+	 */
 
-ClientData
-Tcl_VarTraceInfo(interp, varName, flags, proc, prevClientData)
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *varName;	/* Name of variable;  may end with "(index)"
-				 * to signify an array reference. */
-    int flags;			/* OR-ed combo or TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY (can be 0). */
-    Tcl_VarTraceProc *proc;	/* Procedure assocated with trace. */
-    ClientData prevClientData;	/* If non-NULL, gives last value returned
-				 * by this procedure, so this call will
-				 * return the next trace after that one.
-				 * If NULL, this call will return the
-				 * first trace. */
-{
-    return Tcl_VarTraceInfo2(interp, varName, (char *) NULL,
-	    flags, proc, prevClientData);
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_VarTraceInfo2 --
- *
- *	Same as Tcl_VarTraceInfo, except takes name in two pieces
- *	instead of one.
- *
- * Results:
- *	Same as Tcl_VarTraceInfo.
- *
- * Side effects:
- *	None.
- *
- *----------------------------------------------------------------------
- */
+	DeleteArray(iPtr, part1Ptr, (Var *) &dummyVar, (flags
+		& (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY)) | TCL_TRACE_UNSETS);
+    } else if (TclIsVarLink(&dummyVar)) {
+	/*
+	 * For global/upvar variables referenced in procedures, decrement the
+	 * reference count on the variable referred to, and free the
+	 * referenced variable if it's no longer needed.
+	 */
 
-ClientData
-Tcl_VarTraceInfo2(interp, part1, part2, flags, proc, prevClientData)
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST char *part1;		/* Name of variable or array. */
-    CONST char *part2;		/* Name of element within array;  NULL means
-				 * trace applies to scalar variable or array
-				 * as-a-whole. */
-    int flags;			/* OR-ed combination of TCL_GLOBAL_ONLY,
-				 * TCL_NAMESPACE_ONLY. */
-    Tcl_VarTraceProc *proc;	/* Procedure assocated with trace. */
-    ClientData prevClientData;	/* If non-NULL, gives last value returned
-				 * by this procedure, so this call will
-				 * return the next trace after that one.
-				 * If NULL, this call will return the
-				 * first trace. */
-{
-    register VarTrace *tracePtr;
-    Var *varPtr, *arrayPtr;
+	Var *linkPtr = dummyVar.value.linkPtr;
 
-    varPtr = TclLookupVar(interp, part1, part2,
-	    flags & (TCL_GLOBAL_ONLY|TCL_NAMESPACE_ONLY),
-	    /*msg*/ (char *) NULL,
-	    /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
-    if (varPtr == NULL) {
-	return NULL;
+	if (TclIsVarInHash(linkPtr)) {
+	    VarHashRefCount(linkPtr)--;
+	    CleanupVar(linkPtr, NULL);
+	}
     }
 
     /*
-     * Find the relevant trace, if any, and return its clientData.
+     * If the variable was a namespace variable, decrement its reference
+     * count.
      */
 
-    tracePtr = varPtr->tracePtr;
-    if (prevClientData != NULL) {
-	for ( ;  tracePtr != NULL;  tracePtr = tracePtr->nextPtr) {
-	    if ((tracePtr->clientData == prevClientData)
-		    && (tracePtr->traceProc == proc)) {
-		tracePtr = tracePtr->nextPtr;
-		break;
-	    }
-	}
-    }
-    for ( ;  tracePtr != NULL;  tracePtr = tracePtr->nextPtr) {
-	if (tracePtr->traceProc == proc) {
-	    return tracePtr->clientData;
-	}
-    }
-    return NULL;
+    TclClearVarNamespaceVar(varPtr);
 }
 
 /*
@@ -2574,7 +2487,7 @@ Tcl_VarTraceInfo2(interp, part1, part2, flags, proc, prevClientData)
  *
  * Tcl_UnsetObjCmd --
  *
- *	This object-based procedure is invoked to process the "unset" Tcl
+ *	This object-based function is invoked to process the "unset" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
@@ -2588,49 +2501,47 @@ Tcl_VarTraceInfo2(interp, part1, part2, flags, proc, prevClientData)
 
 	/* ARGSUSED */
 int
-Tcl_UnsetObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_UnsetObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     register int i, flags = TCL_LEAVE_ERR_MSG;
     register char *name;
 
-    if (objc < 1) {
-	Tcl_WrongNumArgs(interp, 1, objv,
-		"?-nocomplain? ?--? ?varName varName ...?");
-	return TCL_ERROR;
-    } else if (objc == 1) {
+    if (objc == 1) {
 	/*
-	 * Do nothing if no arguments supplied, so as to match
-	 * command documentation.
+	 * Do nothing if no arguments supplied, so as to match command
+	 * documentation.
 	 */
+
 	return TCL_OK;
     }
 
     /*
-     * Simple, restrictive argument parsing.  The only options are --
-     * and -nocomplain (which must come first and be given exactly to
-     * be an option).
+     * Simple, restrictive argument parsing. The only options are -- and
+     * -nocomplain (which must come first and be given exactly to be an
+     * option).
      */
+
     i = 1;
     name = TclGetString(objv[i]);
     if (name[0] == '-') {
- 	if (strcmp("-nocomplain", name) == 0) {
+	if (strcmp("-nocomplain", name) == 0) {
 	    i++;
- 	    if (i == objc) {
+	    if (i == objc) {
 		return TCL_OK;
 	    }
- 	    flags = 0;
- 	    name = TclGetString(objv[i]);
- 	}
- 	if (strcmp("--", name) == 0) {
- 	    i++;
- 	}
+	    flags = 0;
+	    name = TclGetString(objv[i]);
+	}
+	if (strcmp("--", name) == 0) {
+	    i++;
+	}
     }
 
-    for (; i < objc;  i++) {
+    for (; i < objc; i++) {
 	if ((TclObjUnsetVar2(interp, objv[i], NULL, flags) != TCL_OK)
 		&& (flags == TCL_LEAVE_ERR_MSG)) {
 	    return TCL_ERROR;
@@ -2644,8 +2555,8 @@ Tcl_UnsetObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_AppendObjCmd --
  *
- *	This object-based procedure is invoked to process the "append" 
- *	Tcl command. See the user documentation for details on what it does.
+ *	This object-based function is invoked to process the "append" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result value.
@@ -2658,18 +2569,15 @@ Tcl_UnsetObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_AppendObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_AppendObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Var *varPtr, *arrayPtr;
-    char *part1;
-
     register Tcl_Obj *varValuePtr = NULL;
-    					/* Initialized to avoid compiler
-				         * warning. */
+				/* Initialized to avoid compiler warning. */
     int i;
 
     if (objc < 2) {
@@ -2678,27 +2586,26 @@ Tcl_AppendObjCmd(dummy, interp, objc, objv)
     }
 
     if (objc == 2) {
-	varValuePtr = Tcl_ObjGetVar2(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG);
+	varValuePtr = Tcl_ObjGetVar2(interp, objv[1], NULL,TCL_LEAVE_ERR_MSG);
 	if (varValuePtr == NULL) {
 	    return TCL_ERROR;
 	}
     } else {
-	varPtr = TclObjLookupVar(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG,
+	varPtr = TclObjLookupVarEx(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG,
 		"set", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
-	part1 = TclGetString(objv[1]);
 	if (varPtr == NULL) {
 	    return TCL_ERROR;
 	}
-	for (i = 2;  i < objc;  i++) {	  
+	for (i=2 ; i<objc ; i++) {
 	    /*
-	     * Note that we do not need to increase the refCount of
-	     * the Var pointers: should a trace delete the variable,
-	     * the return value of TclPtrSetVar will be NULL, and we 
-	     * will not access the variable again.
+	     * Note that we do not need to increase the refCount of the Var
+	     * pointers: should a trace delete the variable, the return value
+	     * of TclPtrSetVar will be NULL or emptyObjPtr, and we will not
+	     * access the variable again.
 	     */
 
-	    varValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, part1, NULL, 
-	            objv[i], (TCL_APPEND_VALUE | TCL_LEAVE_ERR_MSG));
+	    varValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, objv[1],
+		    NULL, objv[i], TCL_APPEND_VALUE|TCL_LEAVE_ERR_MSG, -1);
 	    if ((varValuePtr == NULL) ||
 		    (varValuePtr == ((Interp *) interp)->emptyObjPtr)) {
 		return TCL_ERROR;
@@ -2714,8 +2621,8 @@ Tcl_AppendObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_LappendObjCmd --
  *
- *	This object-based procedure is invoked to process the "lappend" 
- *	Tcl command. See the user documentation for details on what it does.
+ *	This object-based function is invoked to process the "lappend" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result value.
@@ -2728,157 +2635,114 @@ Tcl_AppendObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_LappendObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_LappendObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Tcl_Obj *varValuePtr, *newValuePtr;
-    register List *listRepPtr;
-    register Tcl_Obj **elemPtrs;
-    int numElems, numRequired, createdNewObj, i, j;
+    int numElems, createdNewObj;
     Var *varPtr, *arrayPtr;
-    char *part1;
+    int result;
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "varName ?value value ...?");
 	return TCL_ERROR;
     }
     if (objc == 2) {
-	newValuePtr = Tcl_ObjGetVar2(interp, objv[1], (Tcl_Obj *) NULL, 0);
+	newValuePtr = Tcl_ObjGetVar2(interp, objv[1], NULL, 0);
 	if (newValuePtr == NULL) {
 	    /*
 	     * The variable doesn't exist yet. Just create it with an empty
 	     * initial value.
 	     */
-	    
-	    varValuePtr = Tcl_NewObj();
-	    Tcl_IncrRefCount(varValuePtr);
+
+	    TclNewObj(varValuePtr);
 	    newValuePtr = Tcl_ObjSetVar2(interp, objv[1], NULL, varValuePtr,
 		    TCL_LEAVE_ERR_MSG);
-	    Tcl_DecrRefCount(varValuePtr);
 	    if (newValuePtr == NULL) {
 		return TCL_ERROR;
 	    }
 	} else {
-	    int result;
-	    
-	    result = Tcl_ListObjLength(interp, newValuePtr, &numElems);
+	    result = TclListObjLength(interp, newValuePtr, &numElems);
 	    if (result != TCL_OK) {
 		return result;
 	    }
-	}	    
+	}
     } else {
 	/*
-	 * We have arguments to append. We used to call Tcl_SetVar2 to
-	 * append each argument one at a time to ensure that traces were run
-	 * for each append step. We now append the arguments all at once
-	 * because it's faster. Note that a read trace and a write trace for
-	 * the variable will now each only be called once. Also, if the
-	 * variable's old value is unshared we modify it directly, otherwise
-	 * we create a new copy to modify: this is "copy on write".
-	 *
-	 * Note that you have to protect the variable pointers around
-	 * the TclPtrGetVar call to insure that they remain valid 
-	 * even if the variable was undefined and unused.
+	 * We have arguments to append. We used to call Tcl_SetVar2 to append
+	 * each argument one at a time to ensure that traces were run for each
+	 * append step. We now append the arguments all at once because it's
+	 * faster. Note that a read trace and a write trace for the variable
+	 * will now each only be called once. Also, if the variable's old
+	 * value is unshared we modify it directly, otherwise we create a new
+	 * copy to modify: this is "copy on write".
 	 */
 
-	varPtr = TclObjLookupVar(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG,
+	createdNewObj = 0;
+
+	/*
+	 * Protect the variable pointers around the TclPtrGetVar call
+	 * to insure that they remain valid even if the variable was undefined
+	 * and unused.
+	 */
+
+	varPtr = TclObjLookupVarEx(interp, objv[1], NULL, TCL_LEAVE_ERR_MSG,
 		"set", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
 	if (varPtr == NULL) {
 	    return TCL_ERROR;
 	}
-	varPtr->refCount++;
-	if (arrayPtr != NULL) {
-	    arrayPtr->refCount++;
+	if (TclIsVarInHash(varPtr)) {
+	    VarHashRefCount(varPtr)++;
 	}
-	part1 = TclGetString(objv[1]);
-	varValuePtr = TclPtrGetVar(interp, varPtr, arrayPtr, part1, NULL, 
-	        TCL_LEAVE_ERR_MSG);
-	varPtr->refCount--;
-	if (arrayPtr != NULL) {
-	    arrayPtr->refCount--;
+	if (arrayPtr && TclIsVarInHash(arrayPtr)) {
+	    VarHashRefCount(arrayPtr)++;
+	}
+	varValuePtr = TclPtrGetVar(interp, varPtr, arrayPtr, objv[1], NULL,
+		TCL_LEAVE_ERR_MSG, -1);
+	if (TclIsVarInHash(varPtr)) {
+	    VarHashRefCount(varPtr)--;
+	}
+	if (arrayPtr && TclIsVarInHash(arrayPtr)) {
+	    VarHashRefCount(arrayPtr)--;
 	}
 
-	createdNewObj = 0;
 	if (varValuePtr == NULL) {
 	    /*
 	     * We couldn't read the old value: either the var doesn't yet
-	     * exist or it's an array element.  If it's new, we will try to
+	     * exist or it's an array element. If it's new, we will try to
 	     * create it with Tcl_ObjSetVar2 below.
 	     */
-	    
-	    varValuePtr = Tcl_NewObj();
+
+	    TclNewObj(varValuePtr);
 	    createdNewObj = 1;
-	} else if (Tcl_IsShared(varValuePtr)) {	
+	} else if (Tcl_IsShared(varValuePtr)) {
 	    varValuePtr = Tcl_DuplicateObj(varValuePtr);
 	    createdNewObj = 1;
 	}
 
-	/*
-	 * Convert the variable's old value to a list object if necessary.
-	 */
-
-	if (varValuePtr->typePtr != &tclListType) {
-	    int result = tclListType.setFromAnyProc(interp, varValuePtr);
-	    if (result != TCL_OK) {
-		if (createdNewObj) {
-		    Tcl_DecrRefCount(varValuePtr); /* free unneeded obj. */
-		}
-		return result;
-	    }
+	result = TclListObjLength(interp, varValuePtr, &numElems);
+	if (result == TCL_OK) {
+	    result = Tcl_ListObjReplace(interp, varValuePtr, numElems, 0,
+		    (objc-2), (objv+2));
 	}
-	listRepPtr = (List *) varValuePtr->internalRep.twoPtrValue.ptr1;
-	elemPtrs = listRepPtr->elements;
-	numElems = listRepPtr->elemCount;
-
-	/*
-	 * If there is no room in the current array of element pointers,
-	 * allocate a new, larger array and copy the pointers to it.
-	 */
-	
-	numRequired = numElems + (objc-2);
-	if (numRequired > listRepPtr->maxElemCount) {
-	    int newMax = (2 * numRequired);
-	    Tcl_Obj **newElemPtrs = (Tcl_Obj **)
-		ckalloc((unsigned) (newMax * sizeof(Tcl_Obj *)));
-	    
-	    memcpy((VOID *) newElemPtrs, (VOID *) elemPtrs,
-		    (size_t) (numElems * sizeof(Tcl_Obj *)));
-	    listRepPtr->maxElemCount = newMax;
-	    listRepPtr->elements = newElemPtrs;
-	    ckfree((char *) elemPtrs);
-	    elemPtrs = newElemPtrs;
+	if (result != TCL_OK) {
+	    if (createdNewObj) {
+		TclDecrRefCount(varValuePtr); /* Free unneeded obj. */
+	    }
+	    return result;
 	}
 
 	/*
-	 * Insert the new elements at the end of the list.
-	 */
-
-	for (i = 2, j = numElems;  i < objc;  i++, j++) {
-            elemPtrs[j] = objv[i];
-            Tcl_IncrRefCount(objv[i]);
-        }
-	listRepPtr->elemCount = numRequired;
-
-	/*
-	 * Invalidate and free any old string representation since it no
-	 * longer reflects the list's internal representation.
-	 */
-
-	Tcl_InvalidateStringRep(varValuePtr);
-
-	/*
 	 * Now store the list object back into the variable. If there is an
-	 * error setting the new value, decrement its ref count if it
-	 * was new and we didn't create the variable.
+	 * error setting the new value, decrement its ref count if it was new
+	 * and we didn't create the variable.
 	 */
-	
-	Tcl_IncrRefCount(varValuePtr);
-	newValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, part1, NULL, 
-	            varValuePtr, TCL_LEAVE_ERR_MSG);	
-	Tcl_DecrRefCount(varValuePtr);
+
+	newValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, objv[1], NULL,
+		varValuePtr, TCL_LEAVE_ERR_MSG, -1);
 	if (newValuePtr == NULL) {
 	    return TCL_ERROR;
 	}
@@ -2898,7 +2762,7 @@ Tcl_LappendObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_ArrayObjCmd --
  *
- *	This object-based procedure is invoked to process the "array" Tcl
+ *	This object-based function is invoked to process the "array" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
@@ -2912,34 +2776,34 @@ Tcl_LappendObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_ArrayObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_ArrayObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     /*
      * The list of constants below should match the arrayOptions string array
      * below.
      */
 
-    enum {ARRAY_ANYMORE, ARRAY_DONESEARCH,  ARRAY_EXISTS, ARRAY_GET,
-	  ARRAY_NAMES, ARRAY_NEXTELEMENT, ARRAY_SET, ARRAY_SIZE,
-	  ARRAY_STARTSEARCH, ARRAY_STATISTICS, ARRAY_UNSET}; 
-    static CONST char *arrayOptions[] = {
+    enum {
+	ARRAY_ANYMORE, ARRAY_DONESEARCH, ARRAY_EXISTS, ARRAY_GET,
+	ARRAY_NAMES, ARRAY_NEXTELEMENT, ARRAY_SET, ARRAY_SIZE,
+	ARRAY_STARTSEARCH, ARRAY_STATISTICS, ARRAY_UNSET
+    };
+    static const char *arrayOptions[] = {
 	"anymore", "donesearch", "exists", "get", "names", "nextelement",
-	"set", "size", "startsearch", "statistics", "unset", (char *) NULL
+	"set", "size", "startsearch", "statistics", "unset", NULL
     };
 
     Interp *iPtr = (Interp *) interp;
     Var *varPtr, *arrayPtr;
     Tcl_HashEntry *hPtr;
-    Tcl_Obj *resultPtr, *varNamePtr;
+    Tcl_Obj *varNamePtr;
     int notArray;
-    char *varName;
     int index, result;
 
-
     if (objc < 3) {
 	Tcl_WrongNumArgs(interp, 1, objv, "option arrayName ?arg ...?");
 	return TCL_ERROR;
@@ -2947,36 +2811,35 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
 
     if (Tcl_GetIndexFromObj(interp, objv[1], arrayOptions, "option",
 	    0, &index) != TCL_OK) {
-    	return TCL_ERROR;
+	return TCL_ERROR;
     }
 
     /*
      * Locate the array variable
      */
-    
+
     varNamePtr = objv[2];
-    varName = TclGetString(varNamePtr);
-    varPtr = TclObjLookupVar(interp, varNamePtr, NULL, /*flags*/ 0,
-            /*msg*/ 0, /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
+    varPtr = TclObjLookupVarEx(interp, varNamePtr, NULL, /*flags*/ 0,
+	    /*msg*/ 0, /*createPart1*/ 0, /*createPart2*/ 0, &arrayPtr);
 
     /*
-     * Special array trace used to keep the env array in sync for
-     * array names, array get, etc.
+     * Special array trace used to keep the env array in sync for array names,
+     * array get, etc.
      */
 
-    if (varPtr != NULL && varPtr->tracePtr != NULL
+    if (varPtr && (varPtr->flags & VAR_TRACED_ARRAY)
 	    && (TclIsVarArray(varPtr) || TclIsVarUndefined(varPtr))) {
-	if (TCL_ERROR == CallVarTraces(iPtr, arrayPtr, varPtr, varName, NULL,
+	if (TclObjCallVarTraces(iPtr, arrayPtr, varPtr, varNamePtr, NULL,
 		(TCL_LEAVE_ERR_MSG|TCL_NAMESPACE_ONLY|TCL_GLOBAL_ONLY|
-		TCL_TRACE_ARRAY), /* leaveErrMsg */ 1)) {
+		TCL_TRACE_ARRAY), /* leaveErrMsg */ 1, -1) == TCL_ERROR) {
 	    return TCL_ERROR;
 	}
     }
 
     /*
-     * Verify that it is indeed an array variable. This test comes after
-     * the traces - the variable may actually become an array as an effect 
-     * of said traces.
+     * Verify that it is indeed an array variable. This test comes after the
+     * traces - the variable may actually become an array as an effect of said
+     * traces.
      */
 
     notArray = 0;
@@ -2985,424 +2848,505 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
 	notArray = 1;
     }
 
-    /*
-     * We have to wait to get the resultPtr until here because
-     * CallVarTraces can affect the result.
-     */
+    switch (index) {
+    case ARRAY_ANYMORE: {
+	ArraySearch *searchPtr;
 
-    resultPtr = Tcl_GetObjResult(interp);
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName searchId");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    goto error;
+	}
+	searchPtr = ParseSearchId(interp, varPtr, varNamePtr, objv[3]);
+	if (searchPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	while (1) {
+	    Var *varPtr2;
 
-    switch (index) {
-        case ARRAY_ANYMORE: {
-	    ArraySearch *searchPtr;
-	    
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, 
-                        "arrayName searchId");
-		return TCL_ERROR;
-	    }
-	    if (notArray) {
-	        goto error;
+	    if (searchPtr->nextEntry != NULL) {
+		varPtr2 = VarHashGetValue(searchPtr->nextEntry);
+		if (!TclIsVarUndefined(varPtr2)) {
+		    break;
+		}
 	    }
-	    searchPtr = ParseSearchId(interp, varPtr, varName, objv[3]);
-	    if (searchPtr == NULL) {
-	        return TCL_ERROR;
+	    searchPtr->nextEntry = Tcl_NextHashEntry(&searchPtr->search);
+	    if (searchPtr->nextEntry == NULL) {
+		Tcl_SetObjResult(interp, iPtr->execEnvPtr->constants[0]);
+		return TCL_OK;
 	    }
-	    while (1) {
-	        Var *varPtr2;
+	}
+	Tcl_SetObjResult(interp, iPtr->execEnvPtr->constants[1]);
+	break;
+    }
+    case ARRAY_DONESEARCH: {
+	ArraySearch *searchPtr, *prevPtr;
 
-		if (searchPtr->nextEntry != NULL) {
-		    varPtr2 = (Var *) Tcl_GetHashValue(searchPtr->nextEntry);
-		    if (!TclIsVarUndefined(varPtr2)) {
-		        break;
-		    }
-		}
-		searchPtr->nextEntry = Tcl_NextHashEntry(&searchPtr->search);
-		if (searchPtr->nextEntry == NULL) {
-		    Tcl_SetIntObj(resultPtr, 0);
-		    return TCL_OK;
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName searchId");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    goto error;
+	}
+	searchPtr = ParseSearchId(interp, varPtr, varNamePtr, objv[3]);
+	if (searchPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	hPtr = Tcl_FindHashEntry(&iPtr->varSearches,(char *) varPtr);
+	if (searchPtr == Tcl_GetHashValue(hPtr)) {
+	    if (searchPtr->nextPtr) {
+		Tcl_SetHashValue(hPtr, searchPtr->nextPtr);
+	    } else {
+		varPtr->flags &= ~VAR_SEARCH_ACTIVE;
+		Tcl_DeleteHashEntry(hPtr);
+	    }
+	} else {
+	    for (prevPtr=Tcl_GetHashValue(hPtr) ;; prevPtr=prevPtr->nextPtr) {
+		if (prevPtr->nextPtr == searchPtr) {
+		    prevPtr->nextPtr = searchPtr->nextPtr;
+		    break;
 		}
 	    }
-	    Tcl_SetIntObj(resultPtr, 1);
-	    break;
 	}
-        case ARRAY_DONESEARCH: {
-	    ArraySearch *searchPtr, *prevPtr;
+	ckfree((char *) searchPtr);
+	break;
+    }
+    case ARRAY_NEXTELEMENT: {
+	ArraySearch *searchPtr;
+	Tcl_HashEntry *hPtr;
+	Var *varPtr2;
 
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, 
-                        "arrayName searchId");
-		return TCL_ERROR;
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName searchId");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    goto error;
+	}
+	searchPtr = ParseSearchId(interp, varPtr, varNamePtr, objv[3]);
+	if (searchPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	while (1) {
+	    hPtr = searchPtr->nextEntry;
+	    if (hPtr == NULL) {
+		hPtr = Tcl_NextHashEntry(&searchPtr->search);
+		if (hPtr == NULL) {
+		    return TCL_OK;
+		}
+	    } else {
+		searchPtr->nextEntry = NULL;
 	    }
-	    if (notArray) {
-	        goto error;
+	    varPtr2 = VarHashGetValue(hPtr);
+	    if (!TclIsVarUndefined(varPtr2)) {
+		break;
 	    }
-	    searchPtr = ParseSearchId(interp, varPtr, varName, objv[3]);
-	    if (searchPtr == NULL) {
-	        return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, VarHashGetKey(varPtr2));
+	break;
+    }
+    case ARRAY_STARTSEARCH: {
+	ArraySearch *searchPtr;
+	int isNew;
+	char *varName = TclGetString(varNamePtr);
+
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    goto error;
+	}
+	searchPtr = (ArraySearch *) ckalloc(sizeof(ArraySearch));
+	hPtr = Tcl_CreateHashEntry(&iPtr->varSearches,
+		(char *) varPtr, &isNew);
+	if (isNew) {
+	    searchPtr->id = 1;
+	    Tcl_AppendResult(interp, "s-1-", varName, NULL);
+	    varPtr->flags |= VAR_SEARCH_ACTIVE;
+	    searchPtr->nextPtr = NULL;
+	} else {
+	    char string[TCL_INTEGER_SPACE];
+
+	    searchPtr->id = ((ArraySearch *) Tcl_GetHashValue(hPtr))->id + 1;
+	    TclFormatInt(string, searchPtr->id);
+	    Tcl_AppendResult(interp, "s-", string, "-", varName, NULL);
+	    searchPtr->nextPtr = Tcl_GetHashValue(hPtr);
+	}
+	searchPtr->varPtr = varPtr;
+	searchPtr->nextEntry = VarHashFirstEntry(varPtr->value.tablePtr,
+		&searchPtr->search);
+	Tcl_SetHashValue(hPtr, searchPtr);
+	break;
+    }
+
+    case ARRAY_EXISTS:
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
+	    return TCL_ERROR;
+	}
+	Tcl_SetObjResult(interp, iPtr->execEnvPtr->constants[!notArray]);
+	break;
+    case ARRAY_GET: {
+	Tcl_HashSearch search;
+	Var *varPtr2;
+	char *pattern = NULL;
+	char *name;
+	Tcl_Obj *namePtr, *valuePtr, *nameLstPtr, *tmpResPtr, **namePtrPtr;
+	int i, count;
+
+	if ((objc != 3) && (objc != 4)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName ?pattern?");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    return TCL_OK;
+	}
+	if (objc == 4) {
+	    pattern = TclGetString(objv[3]);
+	}
+
+	/*
+	 * Store the array names in a new object.
+	 */
+
+	TclNewObj(nameLstPtr);
+	Tcl_IncrRefCount(nameLstPtr);
+	if ((pattern != NULL) && TclMatchIsTrivial(pattern)) {
+	    varPtr2 = VarHashFindVar(varPtr->value.tablePtr, objv[3]);
+	    if (varPtr2 == NULL) {
+		goto searchDone;
 	    }
-	    if (varPtr->searchPtr == searchPtr) {
-	        varPtr->searchPtr = searchPtr->nextPtr;
-	    } else {
-	        for (prevPtr = varPtr->searchPtr;  ;
-		     prevPtr = prevPtr->nextPtr) {
-		    if (prevPtr->nextPtr == searchPtr) {
-		        prevPtr->nextPtr = searchPtr->nextPtr;
-			break;
-		    }
-		}
+	    if (TclIsVarUndefined(varPtr2)) {
+		goto searchDone;
 	    }
-	    ckfree((char *) searchPtr);
-	    break;
-	}
-        case ARRAY_EXISTS: {
-	    if (objc != 3) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
-	        return TCL_ERROR;
+	    result = Tcl_ListObjAppendElement(interp, nameLstPtr,
+		    VarHashGetKey(varPtr2));
+	    if (result != TCL_OK) {
+		TclDecrRefCount(nameLstPtr);
+		return result;
 	    }
-	    Tcl_SetIntObj(resultPtr, !notArray);
-	    break;
+	    goto searchDone;
 	}
-        case ARRAY_GET: {
-	    Tcl_HashSearch search;
-	    Var *varPtr2;
-	    char *pattern = NULL;
-	    char *name;
-	    Tcl_Obj *namePtr, *valuePtr, *nameLstPtr, *tmpResPtr, **namePtrPtr;
-	    int i, count;
-	    
-	    if ((objc != 3) && (objc != 4)) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "arrayName ?pattern?");
-		return TCL_ERROR;
-	    }
-	    if (notArray) {
-	        return TCL_OK;
+	for (varPtr2 = VarHashFirstVar(varPtr->value.tablePtr, &search);
+		varPtr2; varPtr2 = VarHashNextVar(&search)) {
+	    if (TclIsVarUndefined(varPtr2)) {
+		continue;
 	    }
-	    if (objc == 4) {
-	        pattern = TclGetString(objv[3]);
+	    namePtr = VarHashGetKey(varPtr2);
+	    name = TclGetString(namePtr);
+	    if ((objc == 4) && !Tcl_StringMatch(name, pattern)) {
+		continue;	/* Element name doesn't match pattern. */
 	    }
 
-	    /*
-	     * Store the array names in a new object.
-	     */
+	    result = Tcl_ListObjAppendElement(interp, nameLstPtr, namePtr);
+	    if (result != TCL_OK) {
+		TclDecrRefCount(nameLstPtr);
+		return result;
+	    }
+	}
 
-	    nameLstPtr = Tcl_NewObj();
-	    Tcl_IncrRefCount(nameLstPtr);
+    searchDone:
+	/*
+	 * Make sure the Var structure of the array is not removed by a trace
+	 * while we're working.
+	 */
 
-	    for (hPtr = Tcl_FirstHashEntry(varPtr->value.tablePtr, &search);
-		 hPtr != NULL;  hPtr = Tcl_NextHashEntry(&search)) {
-	        varPtr2 = (Var *) Tcl_GetHashValue(hPtr);
-		if (TclIsVarUndefined(varPtr2)) {
-		    continue;
-		}
-		name = Tcl_GetHashKey(varPtr->value.tablePtr, hPtr);
-		if ((objc == 4) && !Tcl_StringMatch(name, pattern)) {
-		    continue;	/* element name doesn't match pattern */
-		}
-		
-		namePtr = Tcl_NewStringObj(name, -1);
-		result = Tcl_ListObjAppendElement(interp, nameLstPtr,
-		        namePtr);
-		if (result != TCL_OK) {
-		    Tcl_DecrRefCount(namePtr); /* free unneeded name obj */
-		    Tcl_DecrRefCount(nameLstPtr);
-		    return result;
-		}
-	    }
+	if (TclIsVarInHash(varPtr)) {
+	    VarHashRefCount(varPtr)++;
+	}
 
-	    /*
-	     * Make sure the Var structure of the array is not removed by
-	     * a trace while we're working.
-	     */
+	/*
+	 * Get the array values corresponding to each element name.
+	 */
 
-	    varPtr->refCount++;
+	TclNewObj(tmpResPtr);
+	result = Tcl_ListObjGetElements(interp, nameLstPtr, &count,
+		&namePtrPtr);
+	if (result != TCL_OK) {
+	    goto errorInArrayGet;
+	}
 
-	    /*
-	     * Get the array values corresponding to each element name 
-	     */
+	for (i=0 ; i<count ; i++) {
+	    namePtr = *namePtrPtr++;
+	    valuePtr = Tcl_ObjGetVar2(interp, objv[2], namePtr,
+		    TCL_LEAVE_ERR_MSG);
+	    if (valuePtr == NULL) {
+		/*
+		 * Some trace played a trick on us; we need to diagnose to
+		 * adapt our behaviour: was the array element unset, or did
+		 * the modification modify the complete array?
+		 */
 
-	    tmpResPtr = Tcl_NewObj();
-	    result = Tcl_ListObjGetElements(interp, nameLstPtr,
-		    &count, &namePtrPtr);
-	    if (result != TCL_OK) {
-		goto errorInArrayGet;
-	    }
-	    
-	    for (i = 0; i < count; i++) { 
-		namePtr = *namePtrPtr++;
-		valuePtr = Tcl_ObjGetVar2(interp, objv[2], namePtr,
-	                TCL_LEAVE_ERR_MSG);
-		if (valuePtr == NULL) {
+		if (TclIsVarArray(varPtr)) {
 		    /*
-		     * Some trace played a trick on us; we need to diagnose to
-		     * adapt our behaviour: was the array element unset, or did
-		     * the modification modify the complete array?
+		     * The array itself looks OK, the variable was undefined:
+		     * forget it.
 		     */
 
-		    if (TclIsVarArray(varPtr) && !TclIsVarUndefined(varPtr)) {
-			/*
-			 * The array itself looks OK, the variable was
-			 * undefined: forget it.
-			 */
-			
-			continue;
-		    } else {
-			result = TCL_ERROR;
-			goto errorInArrayGet;
-		    }
-		}
-		result = Tcl_ListObjAppendElement(interp, tmpResPtr, namePtr);
-		if (result != TCL_OK) {
-		    goto errorInArrayGet;
-		}
-		result = Tcl_ListObjAppendElement(interp, tmpResPtr, valuePtr);
-		if (result != TCL_OK) {
+		    continue;
+		} else {
+		    result = TCL_ERROR;
 		    goto errorInArrayGet;
 		}
 	    }
-	    varPtr->refCount--;
-	    Tcl_SetObjResult(interp, tmpResPtr);
-	    Tcl_DecrRefCount(nameLstPtr);
-	    break;
+	    result = Tcl_DictObjPut(interp, tmpResPtr, namePtr, valuePtr);
+	    if (result != TCL_OK) {
+		goto errorInArrayGet;
+	    }
+	}
+	if (TclIsVarInHash(varPtr)) {
+	    VarHashRefCount(varPtr)--;
+	}
+	Tcl_SetObjResult(interp, tmpResPtr);
+	TclDecrRefCount(nameLstPtr);
+	break;
 
-	    errorInArrayGet:
-	    varPtr->refCount--;
-	    Tcl_DecrRefCount(nameLstPtr);
-	    Tcl_DecrRefCount(tmpResPtr); /* free unneeded temp result obj */
-	    return result;
+    errorInArrayGet:
+	if (TclIsVarInHash(varPtr)) {
+	    VarHashRefCount(varPtr)--;
 	}
-        case ARRAY_NAMES: {
-	    Tcl_HashSearch search;
-	    Var *varPtr2;
-	    char *pattern = NULL;
-	    char *name;
-	    Tcl_Obj *namePtr;
-	    int mode, matched = 0;
-	    static CONST char *options[] = {
-		"-exact", "-glob", "-regexp", (char *) NULL
-	    };
-	    enum options { OPT_EXACT, OPT_GLOB, OPT_REGEXP };
-
-	    mode = OPT_GLOB;
-	    
-	    if ((objc < 3) || (objc > 5)) {
-  	        Tcl_WrongNumArgs(interp, 2, objv,
-			"arrayName ?mode? ?pattern?");
+	TclDecrRefCount(nameLstPtr);
+	TclDecrRefCount(tmpResPtr);	/* Free unneeded temp result. */
+	return result;
+    }
+    case ARRAY_NAMES: {
+	Tcl_HashSearch search;
+	Var *varPtr2;
+	char *pattern;
+	char *name;
+	Tcl_Obj *namePtr, *resultPtr, *patternPtr;
+	int mode, matched = 0;
+	static const char *options[] = {
+	    "-exact", "-glob", "-regexp", NULL
+	};
+	enum options { OPT_EXACT, OPT_GLOB, OPT_REGEXP };
+
+	mode = OPT_GLOB;
+
+	if ((objc < 3) || (objc > 5)) {
+	    Tcl_WrongNumArgs(interp, 2,objv, "arrayName ?mode? ?pattern?");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    return TCL_OK;
+	}
+	if (objc == 4) {
+	    patternPtr = objv[3];
+	    pattern = TclGetString(patternPtr);
+	} else if (objc == 5) {
+	    patternPtr = objv[4];
+	    pattern = TclGetString(patternPtr);
+	    if (Tcl_GetIndexFromObj(interp, objv[3], options, "option", 0,
+		    &mode) != TCL_OK) {
 		return TCL_ERROR;
 	    }
-	    if (notArray) {
-	        return TCL_OK;
-	    }
-	    if (objc == 4) {
-	        pattern = Tcl_GetString(objv[3]);
-	    } else if (objc == 5) {
-		pattern = Tcl_GetString(objv[4]);
-		if (Tcl_GetIndexFromObj(interp, objv[3], options, "option",
-			0, &mode) != TCL_OK) {
-		    return TCL_ERROR;
-		}
-	    }       		
-	    for (hPtr = Tcl_FirstHashEntry(varPtr->value.tablePtr, &search);
-		 hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
-	        varPtr2 = (Var *) Tcl_GetHashValue(hPtr);
-		if (TclIsVarUndefined(varPtr2)) {
-		    continue;
-		}
-		name = Tcl_GetHashKey(varPtr->value.tablePtr, hPtr);
-		if (objc > 3) {
-		    switch ((enum options) mode) {
-			case OPT_EXACT:
-			    matched = (strcmp(name, pattern) == 0);
-			    break;
-			case OPT_GLOB:
-			    matched = Tcl_StringMatch(name, pattern);
-			    break;
-			case OPT_REGEXP:
-			    matched = Tcl_RegExpMatch(interp, name,
-				    pattern);
-			    if (matched < 0) {
-				return TCL_ERROR;
-			    }
-			    break;
-		    }
-		    if (matched == 0) {
-			continue;
-		    }
-		}
-		
-		namePtr = Tcl_NewStringObj(name, -1);
-		result = Tcl_ListObjAppendElement(interp, resultPtr, namePtr);
+	} else {
+	    patternPtr = NULL;
+	    pattern = NULL;
+	}
+	TclNewObj(resultPtr);
+	if (((enum options) mode)==OPT_GLOB && pattern!=NULL &&
+		TclMatchIsTrivial(pattern)) {
+	    varPtr2 = VarHashFindVar(varPtr->value.tablePtr, patternPtr);
+	    if ((varPtr2 != NULL) && !TclIsVarUndefined(varPtr2)) {
+		result = Tcl_ListObjAppendElement(interp, resultPtr,
+			VarHashGetKey(varPtr2));
 		if (result != TCL_OK) {
-		    Tcl_DecrRefCount(namePtr); /* free unneeded name obj */
+		    TclDecrRefCount(resultPtr);
 		    return result;
 		}
 	    }
-	    break;
+	    Tcl_SetObjResult(interp, resultPtr);
+	    return TCL_OK;
 	}
-        case ARRAY_NEXTELEMENT: {
-	    ArraySearch *searchPtr;
-	    Tcl_HashEntry *hPtr;
-	    
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, 
-                        "arrayName searchId");
-		return TCL_ERROR;
-	    }
-	    if (notArray) {
-  	        goto error;
-	    }
-	    searchPtr = ParseSearchId(interp, varPtr, varName, objv[3]);
-	    if (searchPtr == NULL) {
-	        return TCL_ERROR;
+	for (varPtr2=VarHashFirstVar(varPtr->value.tablePtr, &search);
+		varPtr2!=NULL ; varPtr2=VarHashNextVar(&search)) {
+	    if (TclIsVarUndefined(varPtr2)) {
+		continue;
 	    }
-	    while (1) {
-	        Var *varPtr2;
-
-		hPtr = searchPtr->nextEntry;
-		if (hPtr == NULL) {
-		    hPtr = Tcl_NextHashEntry(&searchPtr->search);
-		    if (hPtr == NULL) {
-		        return TCL_OK;
+	    namePtr = VarHashGetKey(varPtr2);
+	    name = TclGetString(namePtr);
+	    if (objc > 3) {
+		switch ((enum options) mode) {
+		case OPT_EXACT:
+		    matched = (strcmp(name, pattern) == 0);
+		    break;
+		case OPT_GLOB:
+		    matched = Tcl_StringMatch(name, pattern);
+		    break;
+		case OPT_REGEXP:
+		    matched = Tcl_RegExpMatch(interp, name, pattern);
+		    if (matched < 0) {
+			TclDecrRefCount(resultPtr);
+			return TCL_ERROR;
 		    }
-		} else {
-		    searchPtr->nextEntry = NULL;
-		}
-		varPtr2 = (Var *) Tcl_GetHashValue(hPtr);
-		if (!TclIsVarUndefined(varPtr2)) {
 		    break;
 		}
+		if (matched == 0) {
+		    continue;
+		}
 	    }
-	    Tcl_SetStringObj(resultPtr,
-	            Tcl_GetHashKey(varPtr->value.tablePtr, hPtr), -1);
-	    break;
-	}
-        case ARRAY_SET: {
-	    if (objc != 4) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "arrayName list");
-		return TCL_ERROR;
+
+	    result = Tcl_ListObjAppendElement(interp, resultPtr, namePtr);
+	    if (result != TCL_OK) {
+		TclDecrRefCount(namePtr);	/* Free unneeded name obj. */
+		return result;
 	    }
-	    return(TclArraySet(interp, objv[2], objv[3]));
 	}
-        case ARRAY_SIZE: {
+	Tcl_SetObjResult(interp, resultPtr);
+	break;
+    }
+    case ARRAY_SET:
+	if (objc != 4) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName list");
+	    return TCL_ERROR;
+	}
+	return TclArraySet(interp, objv[2], objv[3]);
+    case ARRAY_UNSET:
+	if ((objc != 3) && (objc != 4)) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName ?pattern?");
+	    return TCL_ERROR;
+	}
+	if (notArray) {
+	    return TCL_OK;
+	}
+	if (objc == 3) {
+	    /*
+	     * When no pattern is given, just unset the whole array.
+	     */
+
+	    return TclObjUnsetVar2(interp, varNamePtr, NULL, 0);
+	} else {
 	    Tcl_HashSearch search;
-	    Var *varPtr2;
-	    int size;
+	    Var *varPtr2, *protectedVarPtr;
+	    const char *pattern = TclGetString(objv[3]);
 
-	    if (objc != 3) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
-		return TCL_ERROR;
-	    }
-	    size = 0;
-	    if (!notArray) {
-	        for (hPtr = Tcl_FirstHashEntry(varPtr->value.tablePtr, 
-                        &search);
-		     hPtr != NULL;  hPtr = Tcl_NextHashEntry(&search)) {
-		    varPtr2 = (Var *) Tcl_GetHashValue(hPtr);
-		    if (TclIsVarUndefined(varPtr2)) {
-		        continue;
-		    }
-		    size++;
-		}
-	    }
-	    Tcl_SetIntObj(resultPtr, size);
-	    break;
-	}
-        case ARRAY_STARTSEARCH: {
-	    ArraySearch *searchPtr;
+	    /*
+	     * With a trivial pattern, we can just unset.
+	     */
 
-	    if (objc != 3) {
-	        Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
-		return TCL_ERROR;
-	    }
-	    if (notArray) {
-	        goto error;
+	    if (TclMatchIsTrivial(pattern)) {
+		varPtr2 = VarHashFindVar(varPtr->value.tablePtr, objv[3]);
+		if (varPtr2 != NULL && !TclIsVarUndefined(varPtr2)) {
+		    return TclObjUnsetVar2(interp, varNamePtr, objv[3], 0);
+		}
+		return TCL_OK;
 	    }
-	    searchPtr = (ArraySearch *) ckalloc(sizeof(ArraySearch));
-	    if (varPtr->searchPtr == NULL) {
-	        searchPtr->id = 1;
-		Tcl_AppendStringsToObj(resultPtr, "s-1-", varName,
-		        (char *) NULL);
-	    } else {
-	        char string[TCL_INTEGER_SPACE];
 
-		searchPtr->id = varPtr->searchPtr->id + 1;
-		TclFormatInt(string, searchPtr->id);
-		Tcl_AppendStringsToObj(resultPtr, "s-", string, "-", varName,
-			(char *) NULL);
-	    }
-	    searchPtr->varPtr = varPtr;
-	    searchPtr->nextEntry = Tcl_FirstHashEntry(varPtr->value.tablePtr,
-		    &searchPtr->search);
-	    searchPtr->nextPtr = varPtr->searchPtr;
-	    varPtr->searchPtr = searchPtr;
-	    break;
-	}
+	    /*
+	     * Non-trivial case (well, deeply tricky really). We peek inside
+	     * the hash iterator in order to allow us to guarantee that the
+	     * following element in the array will not be scrubbed until we
+	     * have dealt with it. This stops the overall iterator from ending
+	     * up pointing into deallocated memory. [Bug 2939073]
+	     */
 
-	case ARRAY_STATISTICS: {
-	    char *stats;
+	    protectedVarPtr = NULL;
+	    for (varPtr2=VarHashFirstVar(varPtr->value.tablePtr, &search);
+		    varPtr2!=NULL ; varPtr2=VarHashNextVar(&search)) {
+		/*
+		 * Drop the extra ref immediately. We don't need to free it at
+		 * this point though; we'll be unsetting it if necessary soon.
+		 */
 
-	    if (notArray) {
-		goto error;
-	    }
+		if (varPtr2 == protectedVarPtr) {
+		    VarHashRefCount(varPtr2)--;
+		}
 
-	    stats = Tcl_HashStats(varPtr->value.tablePtr);
-	    if (stats != NULL) {
-		Tcl_SetStringObj(Tcl_GetObjResult(interp), stats, -1);
-		ckfree((void *)stats);
-	    } else {
-		Tcl_SetResult(interp, "error reading array statistics",
-			TCL_STATIC);
-		return TCL_ERROR;
-	    }
-	    break;
-        }
-	
-	case ARRAY_UNSET: {
-	    Tcl_HashSearch search;
-	    Var *varPtr2;
-	    char *pattern = NULL;
-	    char *name;
-          
-	    if ((objc != 3) && (objc != 4)) {
-		Tcl_WrongNumArgs(interp, 2, objv, "arrayName ?pattern?");
-		return TCL_ERROR;
-	    }
-	    if (notArray) {
-		return TCL_OK;
-	    }
-	    if (objc == 3) {
 		/*
-		 * When no pattern is given, just unset the whole array
+		 * Guard the next item in the search chain by incrementing its
+		 * refcount. This guarantees that the hash table iterator
+		 * won't be dangling on the next time through the loop.
 		 */
-		if (TclObjUnsetVar2(interp, varNamePtr, NULL, 0)
-			!= TCL_OK) {
-		    return TCL_ERROR;
+
+		if (search.nextEntryPtr != NULL) {
+		    protectedVarPtr = VarHashGetValue(search.nextEntryPtr);
+		    VarHashRefCount(protectedVarPtr)++;
+		} else {
+		    protectedVarPtr = NULL;
 		}
-	    } else {
-		pattern = Tcl_GetString(objv[3]);
-		for (hPtr = Tcl_FirstHashEntry(varPtr->value.tablePtr,
-			&search);
-		     hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
-		    varPtr2 = (Var *) Tcl_GetHashValue(hPtr);
-		    if (TclIsVarUndefined(varPtr2)) {
-			continue;
-		    }
-		    name = Tcl_GetHashKey(varPtr->value.tablePtr, hPtr);
-		    if (Tcl_StringMatch(name, pattern) &&
-			    (TclObjUnsetVar2(interp, varNamePtr, name, 0)
-				    != TCL_OK)) {
+
+		if (!TclIsVarUndefined(varPtr2)) {
+		    Tcl_Obj *namePtr = VarHashGetKey(varPtr2);
+
+		    if (Tcl_StringMatch(TclGetString(namePtr), pattern)
+			    && TclObjUnsetVar2(interp, varNamePtr, namePtr,
+				    0) != TCL_OK) {
+			/*
+			 * If we incremented a refcount, we must decrement it
+			 * here as we will not be coming back properly due to
+			 * the error.
+			 */
+
+			if (protectedVarPtr) {
+			    VarHashRefCount(protectedVarPtr)--;
+			    CleanupVar(protectedVarPtr, varPtr);
+			}
 			return TCL_ERROR;
 		    }
+		} else {
+		    CleanupVar(varPtr2, varPtr);
 		}
 	    }
 	    break;
 	}
+
+    case ARRAY_SIZE: {
+	Tcl_HashSearch search;
+	Var *varPtr2;
+	int size;
+
+	if (objc != 3) {
+	    Tcl_WrongNumArgs(interp, 2, objv, "arrayName");
+	    return TCL_ERROR;
+	}
+	size = 0;
+
+	/*
+	 * Must iterate in order to get chance to check for present but
+	 * "undefined" entries.
+	 */
+
+	if (!notArray) {
+	    for (varPtr2=VarHashFirstVar(varPtr->value.tablePtr, &search);
+		    varPtr2!=NULL ; varPtr2=VarHashNextVar(&search)) {
+		if (TclIsVarUndefined(varPtr2)) {
+		    continue;
+		}
+		size++;
+	    }
+	}
+	Tcl_SetObjResult(interp, Tcl_NewIntObj(size));
+	break;
+    }
+
+    case ARRAY_STATISTICS: {
+	const char *stats;
+
+	if (notArray) {
+	    goto error;
+	}
+
+	stats = Tcl_HashStats((Tcl_HashTable *) varPtr->value.tablePtr);
+	if (stats != NULL) {
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(stats, -1));
+	    ckfree((void *)stats);
+	} else {
+	    Tcl_SetResult(interp,"error reading array statistics",TCL_STATIC);
+	    return TCL_ERROR;
+	}
+	break;
+    }
     }
     return TCL_OK;
 
-    error:
-    Tcl_AppendStringsToObj(resultPtr, "\"", varName, "\" isn't an array",
-	    (char *) NULL);
+  error:
+    Tcl_AppendResult(interp, "\"", TclGetString(varNamePtr),
+	    "\" isn't an array", NULL);
     return TCL_ERROR;
 }
 
@@ -3411,118 +3355,164 @@ Tcl_ArrayObjCmd(dummy, interp, objc, objv)
  *
  * TclArraySet --
  *
- *	Set the elements of an array.  If there are no elements to
- *	set, create an empty array.  This routine is used by the
- *	Tcl_ArrayObjCmd and by the TclSetupEnv routine.
+ *	Set the elements of an array. If there are no elements to set, create
+ *	an empty array. This routine is used by the Tcl_ArrayObjCmd and by the
+ *	TclSetupEnv routine.
  *
  * Results:
  *	A standard Tcl result object.
  *
  * Side effects:
  *	A variable will be created if one does not already exist.
+ *	Callers must Incr arrayNameObj if they pland to Decr it.
  *
  *----------------------------------------------------------------------
  */
 
 int
-TclArraySet(interp, arrayNameObj, arrayElemObj)
-    Tcl_Interp *interp;		/* Current interpreter. */
-    Tcl_Obj *arrayNameObj;	/* The array name. */
-    Tcl_Obj *arrayElemObj;	/* The array elements list.  If this is
+TclArraySet(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Obj *arrayNameObj,	/* The array name. */
+    Tcl_Obj *arrayElemObj)	/* The array elements list or dict. If this is
 				 * NULL, create an empty array. */
 {
     Var *varPtr, *arrayPtr;
-    Tcl_Obj **elemPtrs;
-    int result, elemLen, i, nameLen;
-    char *varName, *p;
-    
-    varName = Tcl_GetStringFromObj(arrayNameObj, &nameLen);
-    p = varName + nameLen - 1;
-    if (*p == ')') {
-	while (--p >= varName) {
-	    if (*p == '(') {
-		VarErrMsg(interp, varName, NULL, "set", needArray);
-		return TCL_ERROR;
-	    }
-	}
-    }
+    int result, i;
 
-    varPtr = TclObjLookupVar(interp, arrayNameObj, NULL,
+    varPtr = TclObjLookupVarEx(interp, arrayNameObj, NULL,
 	    /*flags*/ TCL_LEAVE_ERR_MSG, /*msg*/ "set", /*createPart1*/ 1,
-	    /*createPart2*/ 0, &arrayPtr);
+	    /*createPart2*/ 1, &arrayPtr);
     if (varPtr == NULL) {
 	return TCL_ERROR;
     }
+    if (arrayPtr) {
+	CleanupVar(varPtr, arrayPtr);
+	TclObjVarErrMsg(interp, arrayNameObj, NULL, "set", needArray, -1);
+	return TCL_ERROR;
+    }
+
+    if (arrayElemObj == NULL) {
+	goto ensureArray;
+    }
+
+    /*
+     * Install the contents of the dictionary or list into the array.
+     */
+
+    if (arrayElemObj->typePtr == &tclDictType) {
+	Tcl_Obj *keyPtr, *valuePtr;
+	Tcl_DictSearch search;
+	int done;
+
+	if (Tcl_DictObjSize(interp, arrayElemObj, &done) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (done == 0) {
+	    /*
+	     * Empty, so we'll just force the array to be properly existing
+	     * instead.
+	     */
+
+	    goto ensureArray;
+	}
+
+	/*
+	 * Don't need to look at result of Tcl_DictObjFirst as we've just
+	 * successfully used a dictionary operation on the same object.
+	 */
+
+	for (Tcl_DictObjFirst(interp, arrayElemObj, &search,
+		&keyPtr, &valuePtr, &done) ; !done ;
+		Tcl_DictObjNext(&search, &keyPtr, &valuePtr, &done)) {
+	    /*
+	     * At this point, it would be nice if the key was directly usable
+	     * by the array. This isn't the case though.
+	     */
+
+	    Var *elemVarPtr = TclLookupArrayElement(interp, arrayNameObj,
+		    keyPtr, TCL_LEAVE_ERR_MSG, "set", 1, 1, varPtr, -1);
+
+	    if ((elemVarPtr == NULL) ||
+		    (TclPtrSetVar(interp, elemVarPtr, varPtr, arrayNameObj,
+		    keyPtr, valuePtr, TCL_LEAVE_ERR_MSG, -1) == NULL)) {
+		Tcl_DictObjDone(&search);
+		return TCL_ERROR;
+	    }
+	}
+	return TCL_OK;
+    } else {
+	/*
+	 * Not a dictionary, so assume (and convert to, for backward-
+	 * -compatability reasons) a list.
+	 */
 
-    if (arrayElemObj != NULL) {
-	result = Tcl_ListObjGetElements(interp, arrayElemObj,
+	int elemLen;
+	Tcl_Obj **elemPtrs, *copyListObj;
+
+	result = TclListObjGetElements(interp, arrayElemObj,
 		&elemLen, &elemPtrs);
 	if (result != TCL_OK) {
 	    return result;
 	}
 	if (elemLen & 1) {
-	    Tcl_ResetResult(interp);
-	    Tcl_AppendToObj(Tcl_GetObjResult(interp),
-		    "list must have an even number of elements", -1);
+	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
+		    "list must have an even number of elements", -1));
 	    return TCL_ERROR;
 	}
-	if (elemLen > 0) {
-	    /*
-	     * We needn't worry about traces invalidating arrayPtr:
-	     * should that be the case, TclPtrSetVar will return NULL
-	     * so that we break out of the loop and return an error.
-	     */
+	if (elemLen == 0) {
+	    goto ensureArray;
+	}
 
-	    for (i = 0;  i < elemLen;  i += 2) {
-		char *part2 = TclGetString(elemPtrs[i]);
-		Var *elemVarPtr = TclLookupArrayElement(interp, varName, 
-                        part2, TCL_LEAVE_ERR_MSG, "set", 1, 1, varPtr);
-		if ((elemVarPtr == NULL) ||
-		        (TclPtrSetVar(interp, elemVarPtr, varPtr, varName,
-			 part2, elemPtrs[i+1], TCL_LEAVE_ERR_MSG) == NULL)) {
-		    result = TCL_ERROR;
-		    break;
-		}
+	/*
+	 * We needn't worry about traces invalidating arrayPtr: should that be
+	 * the case, TclPtrSetVar will return NULL so that we break out of the
+	 * loop and return an error.
+	 */
 
-		/*
-		 * The TclPtrSetVar call might have shimmered
-		 * arrayElemObj to another type, so re-fetch
-		 * the pointers for safety.
-		 */
-		Tcl_ListObjGetElements(NULL, arrayElemObj,
-			&elemLen, &elemPtrs);
+	copyListObj = TclListObjCopy(NULL, arrayElemObj);
+	for (i=0 ; i<elemLen ; i+=2) {
+	    Var *elemVarPtr = TclLookupArrayElement(interp, arrayNameObj,
+		    elemPtrs[i], TCL_LEAVE_ERR_MSG, "set", 1, 1, varPtr, -1);
+
+	    if ((elemVarPtr == NULL) ||
+		    (TclPtrSetVar(interp, elemVarPtr, varPtr, arrayNameObj,
+		    elemPtrs[i],elemPtrs[i+1],TCL_LEAVE_ERR_MSG,-1) == NULL)){
+		result = TCL_ERROR;
+		break;
 	    }
-	    return result;
 	}
+	Tcl_DecrRefCount(copyListObj);
+	return result;
     }
-    
+
     /*
-     * The list is empty make sure we have an array, or create
-     * one if necessary.
+     * The list is empty make sure we have an array, or create one if
+     * necessary.
      */
-    
+
+  ensureArray:
     if (varPtr != NULL) {
-	if (!TclIsVarUndefined(varPtr) && TclIsVarArray(varPtr)) {
+	if (TclIsVarArray(varPtr)) {
 	    /*
 	     * Already an array, done.
 	     */
-	    
+
 	    return TCL_OK;
 	}
 	if (TclIsVarArrayElement(varPtr) || !TclIsVarUndefined(varPtr)) {
 	    /*
 	     * Either an array element, or a scalar: lose!
 	     */
-	    
-	    VarErrMsg(interp, varName, (char *)NULL, "array set", needArray);
+
+	    TclObjVarErrMsg(interp, arrayNameObj, NULL, "array set",
+		    needArray, -1);
 	    return TCL_ERROR;
 	}
     }
     TclSetVarArray(varPtr);
-    TclClearVarUndefined(varPtr);
-    varPtr->value.tablePtr =
-	(Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
-    Tcl_InitHashTable(varPtr->value.tablePtr, TCL_STRING_KEYS);
+    varPtr->value.tablePtr = (TclVarHashTable *)
+	    ckalloc(sizeof(TclVarHashTable));
+    TclInitVarHashTable(varPtr->value.tablePtr, TclGetVarNsPtr(varPtr));
     return TCL_OK;
 }
 
@@ -3531,56 +3521,61 @@ TclArraySet(interp, arrayNameObj, arrayElemObj)
  *
  * ObjMakeUpvar --
  *
- *	This procedure does all of the work of the "global" and "upvar"
+ *	This function does all of the work of the "global" and "upvar"
  *	commands.
  *
  * Results:
- *	A standard Tcl completion code. If an error occurs then an
- *	error message is left in iPtr->result.
+ *	A standard Tcl completion code. If an error occurs then an error
+ *	message is left in iPtr->result.
  *
  * Side effects:
  *	The variable given by myName is linked to the variable in framePtr
  *	given by otherP1 and otherP2, so that references to myName are
  *	redirected to the other variable like a symbolic link.
+ *	Callers must Incr myNamePtr if they plan to Decr it.
+ *	Callers must Incr otherP1Ptr if they plan to Decr it.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-ObjMakeUpvar(interp, framePtr, otherP1Ptr, otherP2, otherFlags, myName, myFlags, index)
-    Tcl_Interp *interp;		/* Interpreter containing variables. Used
-			         * for error messages, too. */
-    CallFrame *framePtr;	/* Call frame containing "other" variable.
+ObjMakeUpvar(
+    Tcl_Interp *interp,		/* Interpreter containing variables. Used for
+				 * error messages, too. */
+    CallFrame *framePtr,	/* Call frame containing "other" variable.
 				 * NULL means use global :: context. */
-    Tcl_Obj *otherP1Ptr;
-    CONST char *otherP2;	/* Two-part name of variable in framePtr. */
-    CONST int otherFlags;	/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
+    Tcl_Obj *otherP1Ptr,
+    const char *otherP2,	/* Two-part name of variable in framePtr. */
+    const int otherFlags,	/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
 				 * indicates scope of "other" variable. */
-    CONST char *myName;		/* Name of variable which will refer to
+    Tcl_Obj *myNamePtr,		/* Name of variable which will refer to
 				 * otherP1/otherP2. Must be a scalar. */
-    int myFlags;		/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
+    int myFlags,		/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
 				 * indicates scope of myName. */
-    int index;                  /* If the variable to be linked is an indexed
-				 * scalar, this is its index. Otherwise, -1. */
+    int index)			/* If the variable to be linked is an indexed
+				 * scalar, this is its index. Otherwise, -1 */
 {
     Interp *iPtr = (Interp *) interp;
-    Var *otherPtr, *varPtr, *arrayPtr;
+    Var *otherPtr, *arrayPtr;
     CallFrame *varFramePtr;
-    CONST char *errMsg;
 
     /*
-     * Find "other" in "framePtr". If not looking up other in just the
-     * current namespace, temporarily replace the current var frame
-     * pointer in the interpreter in order to use TclObjLookupVar.
+     * Find "other" in "framePtr". If not looking up other in just the current
+     * namespace, temporarily replace the current var frame pointer in the
+     * interpreter in order to use TclObjLookupVar.
      */
 
+    if (framePtr == NULL) {
+	framePtr = iPtr->rootFramePtr;
+    }
+
     varFramePtr = iPtr->varFramePtr;
     if (!(otherFlags & TCL_NAMESPACE_ONLY)) {
 	iPtr->varFramePtr = framePtr;
     }
     otherPtr = TclObjLookupVar(interp, otherP1Ptr, otherP2,
 	    (otherFlags | TCL_LEAVE_ERR_MSG), "access",
-            /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
+	    /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
     if (!(otherFlags & TCL_NAMESPACE_ONLY)) {
 	iPtr->varFramePtr = varFramePtr;
     }
@@ -3588,63 +3583,161 @@ ObjMakeUpvar(interp, framePtr, otherP1Ptr, otherP2, otherFlags, myName, myFlags,
 	return TCL_ERROR;
     }
 
+    /*
+     * Check that we are not trying to create a namespace var linked to a
+     * local variable in a procedure. If we allowed this, the local
+     * variable in the shorter-lived procedure frame could go away leaving
+     * the namespace var's reference invalid.
+     */
+
+    if (index < 0) {
+	if (!(arrayPtr != NULL
+		     ? (TclIsVarInHash(arrayPtr) && TclGetVarNsPtr(arrayPtr))
+		     : (TclIsVarInHash(otherPtr) && TclGetVarNsPtr(otherPtr)))
+		&& ((myFlags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY))
+			|| (varFramePtr == NULL)
+			|| !HasLocalVars(varFramePtr)
+			|| (strstr(TclGetString(myNamePtr), "::") != NULL))) {
+	    Tcl_AppendResult((Tcl_Interp *) iPtr, "bad variable name \"",
+		    TclGetString(myNamePtr), "\": upvar won't create "
+		    "namespace variable that refers to procedure variable",
+		    NULL);
+	    return TCL_ERROR;
+	}
+    }
+
+    return TclPtrObjMakeUpvar(interp, otherPtr, myNamePtr, myFlags, index);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclPtrMakeUpvar --
+ *
+ *	This procedure does all of the work of the "global" and "upvar"
+ *	commands.
+ *
+ * Results:
+ *	A standard Tcl completion code. If an error occurs then an error
+ *	message is left in iPtr->result.
+ *
+ * Side effects:
+ *	The variable given by myName is linked to the variable in framePtr
+ *	given by otherP1 and otherP2, so that references to myName are
+ *	redirected to the other variable like a symbolic link.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclPtrMakeUpvar(
+    Tcl_Interp *interp,		/* Interpreter containing variables. Used for
+				 * error messages, too. */
+    Var *otherPtr,		/* Pointer to the variable being linked-to. */
+    const char *myName,		/* Name of variable which will refer to
+				 * otherP1/otherP2. Must be a scalar. */
+    int myFlags,		/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
+				 * indicates scope of myName. */
+    int index)			/* If the variable to be linked is an indexed
+				 * scalar, this is its index. Otherwise, -1 */
+{
+    Tcl_Obj *myNamePtr = NULL;
+    int result;
+
+    if (myName) {
+	myNamePtr = Tcl_NewStringObj(myName, -1);
+	Tcl_IncrRefCount(myNamePtr);
+    }
+    result = TclPtrObjMakeUpvar(interp, otherPtr, myNamePtr, myFlags, index);
+    if (myNamePtr) {
+	Tcl_DecrRefCount(myNamePtr);
+    }
+    return result;
+}
+
+/* Callers must Incr myNamePtr if they plan to Decr it. */
+ 
+int
+TclPtrObjMakeUpvar(
+    Tcl_Interp *interp,		/* Interpreter containing variables. Used for
+				 * error messages, too. */
+    Var *otherPtr,		/* Pointer to the variable being linked-to. */
+    Tcl_Obj *myNamePtr,		/* Name of variable which will refer to
+				 * otherP1/otherP2. Must be a scalar. */
+    int myFlags,		/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
+				 * indicates scope of myName. */
+    int index)			/* If the variable to be linked is an indexed
+				 * scalar, this is its index. Otherwise, -1 */
+{
+    Interp *iPtr = (Interp *) interp;
+    CallFrame *varFramePtr = iPtr->varFramePtr;
+    const char *errMsg, *p, *myName;
+    Var *varPtr;
+
     if (index >= 0) {
-	if (!varFramePtr->isProcCallFrame) {
-	    panic("ObjMakeUpvar called with an index outside from a proc.\n");
+	if (!HasLocalVars(varFramePtr)) {
+	    Tcl_Panic("ObjMakeUpvar called with an index outside from a proc");
 	}
-	varPtr = &(varFramePtr->compiledLocals[index]);
+	varPtr = (Var *) &(varFramePtr->compiledLocals[index]);
+	myNamePtr = localName(iPtr->varFramePtr, index);
+	myName = myNamePtr? TclGetString(myNamePtr) : NULL;
     } else {
 	/*
-	 * Check that we are not trying to create a namespace var linked to
-	 * a local variable in a procedure. If we allowed this, the local
-	 * variable in the shorter-lived procedure frame could go away
-	 * leaving the namespace var's reference invalid.
+	 * Do not permit the new variable to look like an array reference, as
+	 * it will not be reachable in that case [Bug 600812, TIP 184]. The
+	 * "definition" of what "looks like an array reference" is consistent
+	 * (and must remain consistent) with the code in TclObjLookupVar().
 	 */
-	
-	if (((otherP2 ? arrayPtr->nsPtr : otherPtr->nsPtr) == NULL) 
-	    && ((myFlags & (TCL_GLOBAL_ONLY | TCL_NAMESPACE_ONLY))
-		|| (varFramePtr == NULL)
-		|| !varFramePtr->isProcCallFrame
-		|| (strstr(myName, "::") != NULL))) {
-	    Tcl_AppendResult((Tcl_Interp *) iPtr, "bad variable name \"",
-		    myName, "\": upvar won't create namespace variable that ",
-		    "refers to procedure variable", (char *) NULL);
-	    return TCL_ERROR;
+
+	myName = TclGetString(myNamePtr);
+	p = strstr(myName, "(");
+	if (p != NULL) {
+	    p += strlen(p)-1;
+	    if (*p == ')') {
+		/*
+		 * myName looks like an array reference.
+		 */
+
+		Tcl_AppendResult((Tcl_Interp *) iPtr, "bad variable name \"",
+			myName, "\": upvar won't create a scalar variable "
+			"that looks like an array element", NULL);
+		return TCL_ERROR;
+	    }
 	}
-	
+
 	/*
 	 * Lookup and eventually create the new variable. Set the flag bit
-	 * LOOKUP_FOR_UPVAR to indicate the special resolution rules for 
-	 * upvar purposes: 
+	 * AVOID_RESOLVERS to indicate the special resolution rules for upvar
+	 * purposes:
 	 *   - Bug #696893 - variable is either proc-local or in the current
-	 *     namespace; never follow the second (global) resolution path 
-	 *   - Bug #631741 - do not use special namespace or interp resolvers
+	 *     namespace; never follow the second (global) resolution path.
+	 *   - Bug #631741 - do not use special namespace or interp resolvers.
 	 */
-	
-	varPtr = TclLookupSimpleVar(interp, myName, (myFlags | LOOKUP_FOR_UPVAR), 
-	        /* create */ 1, &errMsg, &index);
+
+	varPtr = TclLookupSimpleVar(interp, myNamePtr,
+		myFlags|AVOID_RESOLVERS, /* create */ 1, &errMsg, &index);
 	if (varPtr == NULL) {
-	    VarErrMsg(interp, myName, NULL, "create", errMsg);
+	    TclObjVarErrMsg(interp, myNamePtr, NULL, "create", errMsg, -1);
 	    return TCL_ERROR;
 	}
     }
 
     if (varPtr == otherPtr) {
 	Tcl_SetResult((Tcl_Interp *) iPtr,
-		      "can't upvar from variable to itself", TCL_STATIC);
+		"can't upvar from variable to itself", TCL_STATIC);
 	return TCL_ERROR;
     }
 
-    if (varPtr->tracePtr != NULL) {
+    if (TclIsVarTraced(varPtr)) {
 	Tcl_AppendResult((Tcl_Interp *) iPtr, "variable \"", myName,
-	        "\" has traces: can't use for upvar", (char *) NULL);
+		"\" has traces: can't use for upvar", NULL);
 	return TCL_ERROR;
     } else if (!TclIsVarUndefined(varPtr)) {
 	/*
 	 * The variable already existed. Make sure this variable "varPtr"
-	 * isn't the same as "otherPtr" (avoid circular links). Also, if
-	 * it's not an upvar then it's an error. If it is an upvar, then
-	 * just disconnect it from the thing it currently refers to.
+	 * isn't the same as "otherPtr" (avoid circular links). Also, if it's
+	 * not an upvar then it's an error. If it is an upvar, then just
+	 * disconnect it from the thing it currently refers to.
 	 */
 
 	if (TclIsVarLink(varPtr)) {
@@ -3652,20 +3745,23 @@ ObjMakeUpvar(interp, framePtr, otherP1Ptr, otherP2, otherFlags, myName, myFlags,
 	    if (linkPtr == otherPtr) {
 		return TCL_OK;
 	    }
-	    linkPtr->refCount--;
-	    if (TclIsVarUndefined(linkPtr)) {
-		CleanupVar(linkPtr, (Var *) NULL);
+	    if (TclIsVarInHash(linkPtr)) {
+		VarHashRefCount(linkPtr)--;
+		if (TclIsVarUndefined(linkPtr)) {
+		    CleanupVar(linkPtr, NULL);
+		}
 	    }
 	} else {
 	    Tcl_AppendResult((Tcl_Interp *) iPtr, "variable \"", myName,
-		    "\" already exists", (char *) NULL);
+		    "\" already exists", NULL);
 	    return TCL_ERROR;
 	}
     }
     TclSetVarLink(varPtr);
-    TclClearVarUndefined(varPtr);
     varPtr->value.linkPtr = otherPtr;
-    otherPtr->refCount++;
+    if (TclIsVarInHash(otherPtr)) {
+	VarHashRefCount(otherPtr)++;
+    }
     return TCL_OK;
 }
 
@@ -3674,33 +3770,32 @@ ObjMakeUpvar(interp, framePtr, otherP1Ptr, otherP2, otherFlags, myName, myFlags,
  *
  * Tcl_UpVar --
  *
- *	This procedure links one variable to another, just like
- *	the "upvar" command.
+ *	This function links one variable to another, just like the "upvar"
+ *	command.
  *
  * Results:
- *	A standard Tcl completion code.  If an error occurs then
- *	an error message is left in the interp's result.
+ *	A standard Tcl completion code. If an error occurs then an error
+ *	message is left in the interp's result.
  *
  * Side effects:
  *	The variable in frameName whose name is given by varName becomes
- *	accessible under the name localName, so that references to
- *	localName are redirected to the other variable like a symbolic
- *	link.
+ *	accessible under the name localName, so that references to localName
+ *	are redirected to the other variable like a symbolic link.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_UpVar(interp, frameName, varName, localName, flags)
-    Tcl_Interp *interp;		/* Command interpreter in which varName is
-				 * to be looked up. */
-    CONST char *frameName;	/* Name of the frame containing the source
+Tcl_UpVar(
+    Tcl_Interp *interp,		/* Command interpreter in which varName is to
+				 * be looked up. */
+    const char *frameName,	/* Name of the frame containing the source
 				 * variable, such as "1" or "#0". */
-    CONST char *varName;	/* Name of a variable in interp to link to.
-				 * May be either a scalar name or an
-				 * element in an array. */
-    CONST char *localName;	/* Name of link variable. */
-    int flags;			/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
+    const char *varName,	/* Name of a variable in interp to link to.
+				 * May be either a scalar name or an element
+				 * in an array. */
+    const char *localName,	/* Name of link variable. */
+    int flags)			/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
 				 * indicates scope of localName. */
 {
     return Tcl_UpVar2(interp, frameName, varName, NULL, localName, flags);
@@ -3711,38 +3806,37 @@ Tcl_UpVar(interp, frameName, varName, localName, flags)
  *
  * Tcl_UpVar2 --
  *
- *	This procedure links one variable to another, just like
- *	the "upvar" command.
+ *	This function links one variable to another, just like the "upvar"
+ *	command.
  *
  * Results:
- *	A standard Tcl completion code.  If an error occurs then
- *	an error message is left in the interp's result.
+ *	A standard Tcl completion code. If an error occurs then an error
+ *	message is left in the interp's result.
  *
  * Side effects:
- *	The variable in frameName whose name is given by part1 and
- *	part2 becomes accessible under the name localName, so that
- *	references to localName are redirected to the other variable
- *	like a symbolic link.
+ *	The variable in frameName whose name is given by part1 and part2
+ *	becomes accessible under the name localName, so that references to
+ *	localName are redirected to the other variable like a symbolic link.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_UpVar2(interp, frameName, part1, part2, localName, flags)
-    Tcl_Interp *interp;		/* Interpreter containing variables.  Used
-				 * for error messages too. */
-    CONST char *frameName;	/* Name of the frame containing the source
+Tcl_UpVar2(
+    Tcl_Interp *interp,		/* Interpreter containing variables. Used for
+				 * error messages too. */
+    const char *frameName,	/* Name of the frame containing the source
 				 * variable, such as "1" or "#0". */
-    CONST char *part1;
-    CONST char *part2;		/* Two parts of source variable name to
-				 * link to. */
-    CONST char *localName;	/* Name of link variable. */
-    int flags;			/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
+    const char *part1,
+    const char *part2,		/* Two parts of source variable name to link
+				 * to. */
+    const char *localName,	/* Name of link variable. */
+    int flags)			/* 0, TCL_GLOBAL_ONLY or TCL_NAMESPACE_ONLY:
 				 * indicates scope of localName. */
 {
     int result;
     CallFrame *framePtr;
-    Tcl_Obj *part1Ptr;
+    Tcl_Obj *part1Ptr, *localNamePtr;
 
     if (TclGetFrame(interp, frameName, &framePtr) == -1) {
 	return TCL_ERROR;
@@ -3750,10 +3844,13 @@ Tcl_UpVar2(interp, frameName, part1, part2, localName, flags)
 
     part1Ptr = Tcl_NewStringObj(part1, -1);
     Tcl_IncrRefCount(part1Ptr);
-    result = ObjMakeUpvar(interp, framePtr, part1Ptr, part2, 0,
-	    localName, flags, -1);
-    TclDecrRefCount(part1Ptr);
+    localNamePtr = Tcl_NewStringObj(localName, -1);
+    Tcl_IncrRefCount(localNamePtr);
 
+    result = ObjMakeUpvar(interp, framePtr, part1Ptr, part2, 0,
+	    localNamePtr, flags, -1);
+    Tcl_DecrRefCount(part1Ptr);
+    Tcl_DecrRefCount(localNamePtr);
     return result;
 }
 
@@ -3762,50 +3859,59 @@ Tcl_UpVar2(interp, frameName, part1, part2, localName, flags)
  *
  * Tcl_GetVariableFullName --
  *
- *	Given a Tcl_Var token returned by Tcl_FindNamespaceVar, this
- *	procedure appends to an object the namespace variable's full
- *	name, qualified by a sequence of parent namespace names.
+ *	Given a Tcl_Var token returned by Tcl_FindNamespaceVar, this function
+ *	appends to an object the namespace variable's full name, qualified by
+ *	a sequence of parent namespace names.
  *
  * Results:
- *      None.
+ *	None.
  *
  * Side effects:
- *      The variable's fully-qualified name is appended to the string
+ *	The variable's fully-qualified name is appended to the string
  *	representation of objPtr.
  *
  *----------------------------------------------------------------------
  */
 
 void
-Tcl_GetVariableFullName(interp, variable, objPtr)
-    Tcl_Interp *interp;	        /* Interpreter containing the variable. */
-    Tcl_Var variable;		/* Token for the variable returned by a
+Tcl_GetVariableFullName(
+    Tcl_Interp *interp,		/* Interpreter containing the variable. */
+    Tcl_Var variable,		/* Token for the variable returned by a
 				 * previous call to Tcl_FindNamespaceVar. */
-    Tcl_Obj *objPtr;		/* Points to the object onto which the
+    Tcl_Obj *objPtr)		/* Points to the object onto which the
 				 * variable's full name is appended. */
 {
     Interp *iPtr = (Interp *) interp;
     register Var *varPtr = (Var *) variable;
-    char *name;
+    Tcl_Obj *namePtr;
+    Namespace *nsPtr;
 
     /*
-     * Add the full name of the containing namespace (if any), followed by
-     * the "::" separator, then the variable name.
+     * Add the full name of the containing namespace (if any), followed by the
+     * "::" separator, then the variable name.
      */
 
-    if (varPtr != NULL) {
+    if (varPtr) {
 	if (!TclIsVarArrayElement(varPtr)) {
-	    if (varPtr->nsPtr != NULL) {
-		Tcl_AppendToObj(objPtr, varPtr->nsPtr->fullName, -1);
-		if (varPtr->nsPtr != iPtr->globalNsPtr) {
+	    nsPtr = TclGetVarNsPtr(varPtr);
+	    if (nsPtr) {
+		Tcl_AppendToObj(objPtr, nsPtr->fullName, -1);
+		if (nsPtr != iPtr->globalNsPtr) {
 		    Tcl_AppendToObj(objPtr, "::", 2);
 		}
 	    }
-	    if (varPtr->name != NULL) {
-		Tcl_AppendToObj(objPtr, varPtr->name, -1);
-	    } else if (varPtr->hPtr != NULL) {
-		name = Tcl_GetHashKey(varPtr->hPtr->tablePtr, varPtr->hPtr);
-		Tcl_AppendToObj(objPtr, name, -1);
+	    if (TclIsVarInHash(varPtr)) {
+		if (!TclIsVarDeadHash(varPtr)) {
+		    namePtr = VarHashGetKey(varPtr);
+		    Tcl_AppendObjToObj(objPtr, namePtr);
+		}
+	    } else if (iPtr->varFramePtr->procPtr) {
+		int index = varPtr - iPtr->varFramePtr->compiledLocals;
+
+		if (index < iPtr->varFramePtr->numCompiledLocals) {
+		    namePtr = localName(iPtr->varFramePtr, index);
+		    Tcl_AppendObjToObj(objPtr, namePtr);
+		}
 	    }
 	}
     }
@@ -3816,7 +3922,7 @@ Tcl_GetVariableFullName(interp, variable, objPtr)
  *
  * Tcl_GlobalObjCmd --
  *
- *	This object-based procedure is invoked to process the "global" Tcl
+ *	This object-based function is invoked to process the "global" Tcl
  *	command. See the user documentation for details on what it does.
  *
  * Results:
@@ -3829,14 +3935,14 @@ Tcl_GetVariableFullName(interp, variable, objPtr)
  */
 
 int
-Tcl_GlobalObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_GlobalObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
-    register Tcl_Obj *objPtr;
+    register Tcl_Obj *objPtr, *tailPtr;
     char *varName;
     register char *tail;
     int result, i;
@@ -3849,43 +3955,53 @@ Tcl_GlobalObjCmd(dummy, interp, objc, objv)
     /*
      * If we are not executing inside a Tcl procedure, just return.
      */
-    
-    if ((iPtr->varFramePtr == NULL)
-	    || !iPtr->varFramePtr->isProcCallFrame) {
+
+    if (!HasLocalVars(iPtr->varFramePtr)) {
 	return TCL_OK;
     }
 
-    for (i = 1;  i < objc;  i++) {
+    for (i=1 ; i<objc ; i++) {
 	/*
 	 * Make a local variable linked to its counterpart in the global ::
 	 * namespace.
 	 */
-	
+
 	objPtr = objv[i];
 	varName = TclGetString(objPtr);
 
 	/*
 	 * The variable name might have a scope qualifier, but the name for
-         * the local "link" variable must be the simple name at the tail.
+	 * the local "link" variable must be the simple name at the tail.
 	 */
 
-	for (tail = varName;  *tail != '\0';  tail++) {
+	for (tail=varName ; *tail!='\0' ; tail++) {
 	    /* empty body */
 	}
-        while ((tail > varName) && ((*tail != ':') || (*(tail-1) != ':'))) {
-            tail--;
+	while ((tail > varName) && ((*tail != ':') || (*(tail-1) != ':'))) {
+	    tail--;
+	}
+	if ((*tail == ':') && (tail > varName)) {
+	    tail++;
 	}
-        if ((*tail == ':') && (tail > varName)) {
-            tail++;
+
+	if (tail == varName) {
+	    tailPtr = objPtr;
+	} else {
+	    tailPtr = Tcl_NewStringObj(tail, -1);
+	    Tcl_IncrRefCount(tailPtr);
 	}
 
 	/*
 	 * Link to the variable "varName" in the global :: namespace.
 	 */
-	
-	result = ObjMakeUpvar(interp, (CallFrame *) NULL,
-		objPtr, NULL, /*otherFlags*/ TCL_GLOBAL_ONLY,
-	        /*myName*/ tail, /*myFlags*/ 0, -1);
+
+	result = ObjMakeUpvar(interp, NULL, objPtr, NULL,
+		TCL_GLOBAL_ONLY, /*myName*/ tailPtr, /*myFlags*/ 0, -1);
+
+	if (tail != varName) {
+	    Tcl_DecrRefCount(tailPtr);
+	}
+
 	if (result != TCL_OK) {
 	    return result;
 	}
@@ -3908,104 +4024,100 @@ Tcl_GlobalObjCmd(dummy, interp, objc, objv)
  *	optional.
  *
  *	If the variable does not exist, it is created and given the optional
- *	value. If it already exists, it is simply set to the optional
- *	value. Normally, "name" is an unqualified name, so it is created in
- *	the current namespace. If it includes namespace qualifiers, it can
- *	be created in another namespace.
+ *	value. If it already exists, it is simply set to the optional value.
+ *	Normally, "name" is an unqualified name, so it is created in the
+ *	current namespace. If it includes namespace qualifiers, it can be
+ *	created in another namespace.
  *
- *	If the variable command is executed inside a Tcl procedure, it
- *	creates a local variable linked to the newly-created namespace
- *	variable.
+ *	If the variable command is executed inside a Tcl procedure, it creates
+ *	a local variable linked to the newly-created namespace variable.
  *
  * Results:
- *	Returns TCL_OK if the variable is found or created. Returns
- *	TCL_ERROR if anything goes wrong.
+ *	Returns TCL_OK if the variable is found or created. Returns TCL_ERROR
+ *	if anything goes wrong.
  *
  * Side effects:
- *	If anything goes wrong, this procedure returns an error message
- *	as the result in the interpreter's result object.
+ *	If anything goes wrong, this function returns an error message as the
+ *	result in the interpreter's result object.
  *
  *----------------------------------------------------------------------
  */
 
 int
-Tcl_VariableObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_VariableObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     Interp *iPtr = (Interp *) interp;
     char *varName, *tail, *cp;
     Var *varPtr, *arrayPtr;
     Tcl_Obj *varValuePtr;
     int i, result;
-    Tcl_Obj *varNamePtr;
+    Tcl_Obj *varNamePtr, *tailPtr;
 
     if (objc < 2) {
 	Tcl_WrongNumArgs(interp, 1, objv, "?name value...? name ?value?");
 	return TCL_ERROR;
     }
 
-    for (i = 1;  i < objc;  i = i+2) {
+    for (i=1 ; i<objc ; i+=2) {
 	/*
-	 * Look up each variable in the current namespace context, creating
-	 * it if necessary.
+	 * Look up each variable in the current namespace context, creating it
+	 * if necessary.
 	 */
-	
+
 	varNamePtr = objv[i];
 	varName = TclGetString(varNamePtr);
-	varPtr = TclObjLookupVar(interp, varNamePtr, NULL,
-                (TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "define",
-                /*createPart1*/ 1, /*createPart2*/ 0, &arrayPtr);
-	
-        if (arrayPtr != NULL) {
-            /*
-             * Variable cannot be an element in an array.  If arrayPtr is
-             * non-null, it is, so throw up an error and return.
-             */
-            VarErrMsg(interp, varName, NULL, "define", isArrayElement);
-            return TCL_ERROR;
-        }
+	varPtr = TclObjLookupVarEx(interp, varNamePtr, NULL,
+		(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "define",
+		/*createPart1*/ 1, /*createPart2*/ 0, &arrayPtr);
+
+	if (arrayPtr != NULL) {
+	    /*
+	     * Variable cannot be an element in an array. If arrayPtr is
+	     * non-NULL, it is, so throw up an error and return.
+	     */
+
+	    TclObjVarErrMsg(interp, varNamePtr, NULL, "define",
+		    isArrayElement, -1);
+	    return TCL_ERROR;
+	}
 
 	if (varPtr == NULL) {
 	    return TCL_ERROR;
 	}
 
 	/*
-	 * Mark the variable as a namespace variable and increment its 
+	 * Mark the variable as a namespace variable and increment its
 	 * reference count so that it will persist until its namespace is
 	 * destroyed or until the variable is unset.
 	 */
 
-	if (!(varPtr->flags & VAR_NAMESPACE_VAR)) {
-	    varPtr->flags |= VAR_NAMESPACE_VAR;
-	    varPtr->refCount++;
-	}
+	TclSetVarNamespaceVar(varPtr);
 
 	/*
 	 * If a value was specified, set the variable to that value.
-	 * Otherwise, if the variable is new, leave it undefined.
-	 * (If the variable already exists and no value was specified,
-	 * leave its value unchanged; just create the local link if
-	 * we're in a Tcl procedure).
+	 * Otherwise, if the variable is new, leave it undefined. (If the
+	 * variable already exists and no value was specified, leave its value
+	 * unchanged; just create the local link if we're in a Tcl procedure).
 	 */
 
-	if (i+1 < objc) {	/* a value was specified */
-	    varValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, varName, NULL,
-		    objv[i+1], (TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG));
+	if (i+1 < objc) {	/* A value was specified. */
+	    varValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, varNamePtr,
+		    NULL, objv[i+1], TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG,-1);
 	    if (varValuePtr == NULL) {
 		return TCL_ERROR;
 	    }
 	}
 
 	/*
-	 * If we are executing inside a Tcl procedure, create a local
-	 * variable linked to the new namespace variable "varName".
+	 * If we are executing inside a Tcl procedure, create a local variable
+	 * linked to the new namespace variable "varName".
 	 */
 
-	if ((iPtr->varFramePtr != NULL)
-	        && iPtr->varFramePtr->isProcCallFrame) {
+	if (HasLocalVars(iPtr->varFramePtr)) {
 	    /*
 	     * varName might have a scope qualifier, but the name for the
 	     * local "link" variable must be the simple name at the tail.
@@ -4014,23 +4126,34 @@ Tcl_VariableObjCmd(dummy, interp, objc, objv)
 	     * consecutive ":" characters).
 	     */
 
-	    for (tail = cp = varName;  *cp != '\0'; ) {
+	    for (tail=cp=varName ; *cp!='\0' ;) {
 		if (*cp++ == ':') {
 		    while (*cp == ':') {
 			tail = ++cp;
 		    }
 		}
 	    }
-	    
+
 	    /*
 	     * Create a local link "tail" to the variable "varName" in the
 	     * current namespace.
 	     */
-	    
-	    result = ObjMakeUpvar(interp, (CallFrame *) NULL,
-		    /*otherP1*/ varNamePtr, /*otherP2*/ NULL,
-                    /*otherFlags*/ TCL_NAMESPACE_ONLY,
-		    /*myName*/ tail, /*myFlags*/ 0, -1);
+
+	    if (tail == varName) {
+		tailPtr = varNamePtr;
+	    } else {
+		tailPtr = Tcl_NewStringObj(tail, -1);
+		Tcl_IncrRefCount(tailPtr);
+	    }
+
+	    result = ObjMakeUpvar(interp, NULL, varNamePtr, /*otherP2*/ NULL,
+		    /*otherFlags*/ TCL_NAMESPACE_ONLY,
+		    /*myName*/ tailPtr, /*myFlags*/ 0, -1);
+
+	    if (tail != varName) {
+		Tcl_DecrRefCount(tailPtr);
+	    }
+
 	    if (result != TCL_OK) {
 		return result;
 	    }
@@ -4044,8 +4167,8 @@ Tcl_VariableObjCmd(dummy, interp, objc, objv)
  *
  * Tcl_UpvarObjCmd --
  *
- *	This object-based procedure is invoked to process the "upvar"
- *	Tcl command. See the user documentation for details on what it does.
+ *	This object-based function is invoked to process the "upvar" Tcl
+ *	command. See the user documentation for details on what it does.
  *
  * Results:
  *	A standard Tcl object result value.
@@ -4058,18 +4181,17 @@ Tcl_VariableObjCmd(dummy, interp, objc, objv)
 
 	/* ARGSUSED */
 int
-Tcl_UpvarObjCmd(dummy, interp, objc, objv)
-    ClientData dummy;		/* Not used. */
-    Tcl_Interp *interp;		/* Current interpreter. */
-    int objc;			/* Number of arguments. */
-    Tcl_Obj *CONST objv[];	/* Argument objects. */
+Tcl_UpvarObjCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
 {
     CallFrame *framePtr;
-    char *frameSpec, *localName;
     int result;
 
     if (objc < 3) {
-	upvarSyntax:
+    upvarSyntax:
 	Tcl_WrongNumArgs(interp, 1, objv,
 		"?level? otherVar localVar ?otherVar localVar ...?");
 	return TCL_ERROR;
@@ -4077,11 +4199,10 @@ Tcl_UpvarObjCmd(dummy, interp, objc, objv)
 
     /*
      * Find the call frame containing each of the "other variables" to be
-     * linked to. 
+     * linked to.
      */
 
-    frameSpec = TclGetString(objv[1]);
-    result = TclGetFrame(interp, frameSpec, &framePtr);
+    result = TclObjGetFrame(interp, objv[1], &framePtr);
     if (result == -1) {
 	return TCL_ERROR;
     }
@@ -4092,15 +4213,14 @@ Tcl_UpvarObjCmd(dummy, interp, objc, objv)
     objv += result+1;
 
     /*
-     * Iterate over each (other variable, local variable) pair.
-     * Divide the other variable name into two parts, then call
-     * MakeUpvar to do all the work of linking it to the local variable.
+     * Iterate over each (other variable, local variable) pair. Divide the
+     * other variable name into two parts, then call MakeUpvar to do all the
+     * work of linking it to the local variable.
      */
 
-    for ( ;  objc > 0;  objc -= 2, objv += 2) {
-	localName = TclGetString(objv[1]);
+    for (; objc>0 ; objc-=2, objv+=2) {
 	result = ObjMakeUpvar(interp, framePtr, /* othervarName */ objv[0],
-		NULL, 0, /* myVarName */ localName, /*flags*/ 0, -1);
+		NULL, 0, /* myVarName */ objv[1], /*flags*/ 0, -1);
 	if (result != TCL_OK) {
 	    return TCL_ERROR;
 	}
@@ -4111,321 +4231,27 @@ Tcl_UpvarObjCmd(dummy, interp, objc, objv)
 /*
  *----------------------------------------------------------------------
  *
- * DisposeTraceResult--
- *
- *	This procedure is called to dispose of the result returned from
- *	a trace procedure.  The disposal method appropriate to the type
- *	of result is determined by flags.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	The memory allocated for the trace result may be freed.
- *
- *----------------------------------------------------------------------
- */
-
-static void
-DisposeTraceResult(flags, result)
-    int flags;			/* Indicates type of result to determine
-				 * proper disposal method */
-    char *result;		/* The result returned from a trace
-				 * procedure to be disposed */
-{
-    if (flags & TCL_TRACE_RESULT_DYNAMIC) {
-	ckfree(result);
-    } else if (flags & TCL_TRACE_RESULT_OBJECT) {
-	Tcl_DecrRefCount((Tcl_Obj *) result);
-    }
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * CallVarTraces --
- *
- *	This procedure is invoked to find and invoke relevant
- *	trace procedures associated with a particular operation on
- *	a variable. This procedure invokes traces both on the
- *	variable and on its containing array (where relevant).
- *
- * Results:
- *      Returns TCL_OK to indicate normal operation.  Returns TCL_ERROR
- *      if invocation of a trace procedure indicated an error.  When
- *      TCL_ERROR is returned and leaveErrMsg is true, then the
- *      ::errorInfo variable of iPtr has information about the error
- *      appended to it.
- *
- * Side effects:
- *	Almost anything can happen, depending on trace; this procedure
- *	itself doesn't have any side effects.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-CallVarTraces(iPtr, arrayPtr, varPtr, part1, part2, flags, leaveErrMsg)
-    Interp *iPtr;		/* Interpreter containing variable. */
-    register Var *arrayPtr;	/* Pointer to array variable that contains
-				 * the variable, or NULL if the variable
-				 * isn't an element of an array. */
-    Var *varPtr;		/* Variable whose traces are to be
-				 * invoked. */
-    CONST char *part1;
-    CONST char *part2;		/* Variable's two-part name. */
-    int flags;			/* Flags passed to trace procedures:
-				 * indicates what's happening to variable,
-				 * plus other stuff like TCL_GLOBAL_ONLY,
-				 * or TCL_NAMESPACE_ONLY. */
-    CONST int leaveErrMsg;	/* If true, and one of the traces indicates an
-				 * error, then leave an error message and stack
-				 * trace information in *iPTr. */
-{
-    register VarTrace *tracePtr;
-    ActiveVarTrace active;
-    char *result;
-    CONST char *openParen, *p;
-    Tcl_DString nameCopy;
-    int copiedName;
-    int code = TCL_OK;
-    int disposeFlags = 0;
-    int saveErrFlags = iPtr->flags 
-	    & (ERR_IN_PROGRESS | ERR_ALREADY_LOGGED | ERROR_CODE_SET);
-
-    /*
-     * If there are already similar trace procedures active for the
-     * variable, don't call them again.
-     */
-
-    if (varPtr->flags & VAR_TRACE_ACTIVE) {
-	return code;
-    }
-    varPtr->flags |= VAR_TRACE_ACTIVE;
-    varPtr->refCount++;
-    if (arrayPtr != NULL) {
-	arrayPtr->refCount++;
-    }
-
-    /*
-     * If the variable name hasn't been parsed into array name and
-     * element, do it here.  If there really is an array element,
-     * make a copy of the original name so that NULLs can be
-     * inserted into it to separate the names (can't modify the name
-     * string in place, because the string might get used by the
-     * callbacks we invoke).
-     */
-
-    copiedName = 0;
-    if (part2 == NULL) {
-	for (p = part1; *p ; p++) {
-	    if (*p == '(') {
-		openParen = p;
-		do {
-		    p++;
-		} while (*p != '\0');
-		p--;
-		if (*p == ')') {
-		    int offset = (openParen - part1);
-		    char *newPart1;
-		    Tcl_DStringInit(&nameCopy);
-		    Tcl_DStringAppend(&nameCopy, part1, (p-part1));
-		    newPart1 = Tcl_DStringValue(&nameCopy);
-		    newPart1[offset] = 0;
-		    part1 = newPart1;
-		    part2 = newPart1 + offset + 1;
-		    copiedName = 1;
-		}
-		break;
-	    }
-	}
-    }
-
-    /*
-     * Invoke traces on the array containing the variable, if relevant.
-     */
-
-    result = NULL;
-    active.nextPtr = iPtr->activeVarTracePtr;
-    iPtr->activeVarTracePtr = &active;
-    Tcl_Preserve((ClientData) iPtr);
-    if (arrayPtr != NULL && !(arrayPtr->flags & VAR_TRACE_ACTIVE)) {
-	active.varPtr = arrayPtr;
-	for (tracePtr = arrayPtr->tracePtr;  tracePtr != NULL;
-	     tracePtr = active.nextTracePtr) {
-	    active.nextTracePtr = tracePtr->nextPtr;
-	    if (!(tracePtr->flags & flags)) {
-		continue;
-	    }
-	    Tcl_Preserve((ClientData) tracePtr);
-	    if (Tcl_InterpDeleted((Tcl_Interp *)iPtr)) {
-		flags |= TCL_INTERP_DESTROYED;
-	    }
-	    result = (*tracePtr->traceProc)(tracePtr->clientData,
-		    (Tcl_Interp *) iPtr, part1, part2, flags);
-	    if (result != NULL) {
-		if (flags & TCL_TRACE_UNSETS) {
-		    /* Ignore errors in unset traces */
-		    DisposeTraceResult(tracePtr->flags, result);
-		} else {
-	            disposeFlags = tracePtr->flags;
-		    code = TCL_ERROR;
-		}
-	    }
-	    Tcl_Release((ClientData) tracePtr);
-	    if (code == TCL_ERROR) {
-		goto done;
-	    }
-	}
-    }
-
-    /*
-     * Invoke traces on the variable itself.
-     */
-
-    if (flags & TCL_TRACE_UNSETS) {
-	flags |= TCL_TRACE_DESTROYED;
-    }
-    active.varPtr = varPtr;
-    for (tracePtr = varPtr->tracePtr; tracePtr != NULL;
-	 tracePtr = active.nextTracePtr) {
-	active.nextTracePtr = tracePtr->nextPtr;
-	if (!(tracePtr->flags & flags)) {
-	    continue;
-	}
-	Tcl_Preserve((ClientData) tracePtr);
-	if (Tcl_InterpDeleted((Tcl_Interp *)iPtr)) {
-	    flags |= TCL_INTERP_DESTROYED;
-	}
-	result = (*tracePtr->traceProc)(tracePtr->clientData,
-		(Tcl_Interp *) iPtr, part1, part2, flags);
-	if (result != NULL) {
-	    if (flags & TCL_TRACE_UNSETS) {
-		/* Ignore errors in unset traces */
-		DisposeTraceResult(tracePtr->flags, result);
-	    } else {
-		disposeFlags = tracePtr->flags;
-		code = TCL_ERROR;
-	    }
-	}
-	Tcl_Release((ClientData) tracePtr);
-	if (code == TCL_ERROR) {
-	    goto done;
-	}
-    }
-
-    /*
-     * Restore the variable's flags, remove the record of our active
-     * traces, and then return.
-     */
-
-    done:
-    if (code == TCL_OK) {
-	iPtr->flags |= saveErrFlags;
-    }
-    if (code == TCL_ERROR) {
-	if (leaveErrMsg) {
-	    CONST char *type = "";
-	    switch (flags&(TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_ARRAY)) {
-		case TCL_TRACE_READS: {
-		    type = "read";
-		    break;
-		}
-		case TCL_TRACE_WRITES: {
-		    type = "set";
-		    break;
-		}
-		case TCL_TRACE_ARRAY: {
-		    type = "trace array";
-		    break;
-		}
-	    }
-	    if (disposeFlags & TCL_TRACE_RESULT_OBJECT) {
-		VarErrMsg((Tcl_Interp *) iPtr, part1, part2, type,
-			Tcl_GetString((Tcl_Obj *) result));
-	    } else {
-		VarErrMsg((Tcl_Interp *) iPtr, part1, part2, type, result);
-	    }
-	}
-	DisposeTraceResult(disposeFlags,result);
-    }
-
-    if (arrayPtr != NULL) {
-	arrayPtr->refCount--;
-    }
-    if (copiedName) {
-	Tcl_DStringFree(&nameCopy);
-    }
-    varPtr->flags &= ~VAR_TRACE_ACTIVE;
-    varPtr->refCount--;
-    iPtr->activeVarTracePtr = active.nextPtr;
-    Tcl_Release((ClientData) iPtr);
-    return code;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * NewVar --
- *
- *	Create a new heap-allocated variable that will eventually be
- *	entered into a hashtable.
- *
- * Results:
- *	The return value is a pointer to the new variable structure. It is
- *	marked as a scalar variable (and not a link or array variable). Its
- *	value initially is NULL. The variable is not part of any hash table
- *	yet. Since it will be in a hashtable and not in a call frame, its
- *	name field is set NULL. It is initially marked as undefined.
- *
- * Side effects:
- *	Storage gets allocated.
- *
- *----------------------------------------------------------------------
- */
-
-static Var *
-NewVar()
-{
-    register Var *varPtr;
-
-    varPtr = (Var *) ckalloc(sizeof(Var));
-    varPtr->value.objPtr = NULL;
-    varPtr->name = NULL;
-    varPtr->nsPtr = NULL;
-    varPtr->hPtr = NULL;
-    varPtr->refCount = 0;
-    varPtr->tracePtr = NULL;
-    varPtr->searchPtr = NULL;
-    varPtr->flags = (VAR_SCALAR | VAR_UNDEFINED | VAR_IN_HASHTABLE);
-    return varPtr;
-}
-
-/*
- *----------------------------------------------------------------------
- *
  * SetArraySearchObj --
  *
- *	This function converts the given tcl object into one that
- *	has the "array search" internal type.
+ *	This function converts the given tcl object into one that has the
+ *	"array search" internal type.
  *
  * Results:
- *	TCL_OK if the conversion succeeded, and TCL_ERROR if it failed
- *	(when an error message will be placed in the interpreter's
- *	result.)
+ *	TCL_OK if the conversion succeeded, and TCL_ERROR if it failed (when
+ *	an error message will be placed in the interpreter's result.)
  *
  * Side effects:
- *	Updates the internal type and representation of the object to
- *	make this an array-search object.  See the tclArraySearchType
- *	declaration above for details of the internal representation.
+ *	Updates the internal type and representation of the object to make
+ *	this an array-search object. See the tclArraySearchType declaration
+ *	above for details of the internal representation.
  *
  *----------------------------------------------------------------------
  */
 
 static int
-SetArraySearchObj(interp, objPtr)
-    Tcl_Interp *interp;
-    Tcl_Obj *objPtr;
+SetArraySearchObj(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr)
 {
     char *string;
     char *end;
@@ -4436,35 +4262,37 @@ SetArraySearchObj(interp, objPtr)
      * Get the string representation. Make it up-to-date if necessary.
      */
 
-    string = Tcl_GetString(objPtr);
+    string = TclGetString(objPtr);
 
     /*
      * Parse the id into the three parts separated by dashes.
      */
+
     if ((string[0] != 's') || (string[1] != '-')) {
-	syntax:
-	Tcl_AppendResult(interp, "illegal search identifier \"", string,
-		"\"", (char *) NULL);
-	return TCL_ERROR;
+	goto syntax;
     }
     id = strtoul(string+2, &end, 10);
     if ((end == (string+2)) || (*end != '-')) {
 	goto syntax;
     }
+
     /*
-     * Can't perform value check in this context, so place reference
-     * to place in string to use for the check in the object instead.
+     * Can't perform value check in this context, so place reference to place
+     * in string to use for the check in the object instead.
      */
+
     end++;
     offset = end - string;
 
-    if (objPtr->typePtr != NULL && objPtr->typePtr->freeIntRepProc != NULL) {
-	objPtr->typePtr->freeIntRepProc(objPtr);
-    }
+    TclFreeIntRep(objPtr);
     objPtr->typePtr = &tclArraySearchType;
-    objPtr->internalRep.twoPtrValue.ptr1 = (VOID *)(((char *)NULL)+id);
-    objPtr->internalRep.twoPtrValue.ptr2 = (VOID *)(((char *)NULL)+offset);
+    objPtr->internalRep.twoPtrValue.ptr1 = INT2PTR(id);
+    objPtr->internalRep.twoPtrValue.ptr2 = INT2PTR(offset);
     return TCL_OK;
+
+  syntax:
+    Tcl_AppendResult(interp, "illegal search identifier \"",string,"\"",NULL);
+    return TCL_ERROR;
 }
 
 /*
@@ -4472,13 +4300,13 @@ SetArraySearchObj(interp, objPtr)
  *
  * ParseSearchId --
  *
- *	This procedure translates from a tcl object to a pointer to an
- *	active array search (if there is one that matches the string).
+ *	This function translates from a tcl object to a pointer to an active
+ *	array search (if there is one that matches the string).
  *
  * Results:
- *	The return value is a pointer to the array search indicated
- *	by string, or NULL if there isn't one.  If NULL is returned,
- *	the interp's result contains an error message.
+ *	The return value is a pointer to the array search indicated by string,
+ *	or NULL if there isn't one. If NULL is returned, the interp's result
+ *	contains an error message.
  *
  * Side effects:
  *	The tcl object might have its internal type and representation
@@ -4488,62 +4316,81 @@ SetArraySearchObj(interp, objPtr)
  */
 
 static ArraySearch *
-ParseSearchId(interp, varPtr, varName, handleObj)
-    Tcl_Interp *interp;		/* Interpreter containing variable. */
-    CONST Var *varPtr;		/* Array variable search is for. */
-    CONST char *varName;	/* Name of array variable that search is
+ParseSearchId(
+    Tcl_Interp *interp,		/* Interpreter containing variable. */
+    const Var *varPtr,		/* Array variable search is for. */
+    Tcl_Obj *varNamePtr,	/* Name of array variable that search is
 				 * supposed to be for. */
-    Tcl_Obj *handleObj;		/* Object containing id of search. Must have
+    Tcl_Obj *handleObj)		/* Object containing id of search. Must have
 				 * form "search-num-var" where "num" is a
 				 * decimal number and "var" is a variable
 				 * name. */
 {
+    Interp *iPtr = (Interp *) interp;
     register char *string;
     register size_t offset;
     int id;
     ArraySearch *searchPtr;
+    char *varName = TclGetString(varNamePtr);
 
     /*
      * Parse the id.
      */
+
     if (Tcl_ConvertToType(interp, handleObj, &tclArraySearchType) != TCL_OK) {
 	return NULL;
     }
+
     /*
-     * Cast is safe, since always came from an int in the first place.
+     * Extract the information out of the Tcl_Obj.
      */
-    id = (int)(((char*)handleObj->internalRep.twoPtrValue.ptr1) -
-	       ((char*)NULL));
-    string = Tcl_GetString(handleObj);
-    offset = (((char*)handleObj->internalRep.twoPtrValue.ptr2) -
-	      ((char*)NULL));
+
+#if 1
+    id = PTR2INT(handleObj->internalRep.twoPtrValue.ptr1);
+    string = TclGetString(handleObj);
+    offset = PTR2INT(handleObj->internalRep.twoPtrValue.ptr2);
+#else
+    id = (int)(((char *) handleObj->internalRep.twoPtrValue.ptr1) -
+	    ((char *) NULL));
+    string = TclGetString(handleObj);
+    offset = (((char *) handleObj->internalRep.twoPtrValue.ptr2) -
+	    ((char *) NULL));
+#endif
+
     /*
-     * This test cannot be placed inside the Tcl_Obj machinery, since
-     * it is dependent on the variable context.
+     * This test cannot be placed inside the Tcl_Obj machinery, since it is
+     * dependent on the variable context.
      */
+
     if (strcmp(string+offset, varName) != 0) {
 	Tcl_AppendResult(interp, "search identifier \"", string,
-		"\" isn't for variable \"", varName, "\"", (char *) NULL);
-	return NULL;
+		"\" isn't for variable \"", varName, "\"", NULL);
+	goto badLookup;
     }
 
     /*
-     * Search through the list of active searches on the interpreter
-     * to see if the desired one exists.
+     * Search through the list of active searches on the interpreter to see if
+     * the desired one exists.
      *
-     * Note that we cannot store the searchPtr directly in the Tcl_Obj
-     * as that would run into trouble when DeleteSearches() was called
-     * so we must scan this list every time.
+     * Note that we cannot store the searchPtr directly in the Tcl_Obj as that
+     * would run into trouble when DeleteSearches() was called so we must scan
+     * this list every time.
      */
 
-    for (searchPtr = varPtr->searchPtr; searchPtr != NULL;
-	 searchPtr = searchPtr->nextPtr) {
-	if (searchPtr->id == id) {
-	    return searchPtr;
+    if (varPtr->flags & VAR_SEARCH_ACTIVE) {
+	Tcl_HashEntry *hPtr =
+		Tcl_FindHashEntry(&iPtr->varSearches, (char *) varPtr);
+
+	for (searchPtr = (ArraySearch *) Tcl_GetHashValue(hPtr);
+		searchPtr != NULL; searchPtr = searchPtr->nextPtr) {
+	    if (searchPtr->id == id) {
+		return searchPtr;
+	    }
 	}
     }
-    Tcl_AppendResult(interp, "couldn't find search \"", string, "\"",
-	    (char *) NULL);
+    Tcl_AppendResult(interp, "couldn't find search \"", string, "\"", NULL);
+  badLookup:
+    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ARRAYSEARCH", string, NULL);
     return NULL;
 }
 
@@ -4552,8 +4399,8 @@ ParseSearchId(interp, varPtr, varName, handleObj)
  *
  * DeleteSearches --
  *
- *	This procedure is called to free up all of the searches
- *	associated with an array variable.
+ *	This function is called to free up all of the searches associated
+ *	with an array variable.
  *
  * Results:
  *	None.
@@ -4565,16 +4412,23 @@ ParseSearchId(interp, varPtr, varName, handleObj)
  */
 
 static void
-DeleteSearches(arrayVarPtr)
-    register Var *arrayVarPtr;		/* Variable whose searches are
-					 * to be deleted. */
+DeleteSearches(
+    Interp *iPtr,
+    register Var *arrayVarPtr)	/* Variable whose searches are to be
+				 * deleted. */
 {
-    ArraySearch *searchPtr;
-
-    while (arrayVarPtr->searchPtr != NULL) {
-	searchPtr = arrayVarPtr->searchPtr;
-	arrayVarPtr->searchPtr = searchPtr->nextPtr;
-	ckfree((char *) searchPtr);
+    ArraySearch *searchPtr, *nextPtr;
+    Tcl_HashEntry *sPtr;
+
+    if (arrayVarPtr->flags & VAR_SEARCH_ACTIVE) {
+	sPtr = Tcl_FindHashEntry(&iPtr->varSearches, (char *) arrayVarPtr);
+	for (searchPtr = (ArraySearch *) Tcl_GetHashValue(sPtr);
+		searchPtr != NULL; searchPtr = nextPtr) {
+	    nextPtr = searchPtr->nextPtr;
+	    ckfree((char *) searchPtr);
+	}
+	arrayVarPtr->flags &= ~VAR_SEARCH_ACTIVE;
+	Tcl_DeleteHashEntry(sPtr);
     }
 }
 
@@ -4583,108 +4437,118 @@ DeleteSearches(arrayVarPtr)
  *
  * TclDeleteNamespaceVars --
  *
- *	This procedure is called to recycle all the storage space
- *	associated with a namespace's table of variables. 
+ *	This function is called to recycle all the storage space associated
+ *	with a namespace's table of variables.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Variables are deleted and trace procedures are invoked, if
- *	any are declared.
+ *	Variables are deleted and trace functions are invoked, if any are
+ *	declared.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclDeleteNamespaceVars(nsPtr)
-    Namespace *nsPtr;
+TclDeleteNamespaceVars(
+    Namespace *nsPtr)
 {
-    Tcl_HashTable *tablePtr = &nsPtr->varTable;
+    TclVarHashTable *tablePtr = &nsPtr->varTable;
     Tcl_Interp *interp = nsPtr->interp;
     Interp *iPtr = (Interp *)interp;
     Tcl_HashSearch search;
-    Tcl_HashEntry *hPtr;
     int flags = 0;
-    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+    Var *varPtr;
 
     /*
-     * Determine what flags to pass to the trace callback procedures.
+     * Determine what flags to pass to the trace callback functions.
      */
 
     if (nsPtr == iPtr->globalNsPtr) {
 	flags = TCL_GLOBAL_ONLY;
-    } else if (nsPtr == currNsPtr) {
+    } else if (nsPtr == (Namespace *) TclGetCurrentNamespace(interp)) {
 	flags = TCL_NAMESPACE_ONLY;
     }
 
-    for (hPtr = Tcl_FirstHashEntry(tablePtr, &search);  hPtr != NULL;
-	 hPtr = Tcl_FirstHashEntry(tablePtr, &search)) {
-	register Var *varPtr = (Var *) Tcl_GetHashValue(hPtr);
+    for (varPtr = VarHashFirstVar(tablePtr, &search);  varPtr != NULL;
+	    varPtr = VarHashFirstVar(tablePtr, &search)) {
 	Tcl_Obj *objPtr = Tcl_NewObj();
-	varPtr->refCount++;	/* Make sure we get to remove from hash */
-	Tcl_IncrRefCount(objPtr); 
+
+	VarHashRefCount(varPtr)++;	/* Make sure we get to remove from
+					 * hash. */
 	Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr, objPtr);
-	UnsetVarStruct(varPtr, NULL, iPtr, Tcl_GetString(objPtr), NULL, flags);
+	UnsetVarStruct(varPtr, NULL, iPtr, /* part1 */ objPtr,
+		NULL, flags);
 	Tcl_DecrRefCount(objPtr); /* free no longer needed obj */
-	varPtr->refCount--;
 
-	/* Remove the variable from the table and force it undefined
-	 * in case an unset trace brought it back from the dead */
-	Tcl_DeleteHashEntry(hPtr);
-	varPtr->hPtr = NULL;
-	TclSetVarUndefined(varPtr);
-	TclSetVarScalar(varPtr);
-	while (varPtr->tracePtr != NULL) {
-	    VarTrace *tracePtr = varPtr->tracePtr;
-	    varPtr->tracePtr = tracePtr->nextPtr;
-	    Tcl_EventuallyFree((ClientData) tracePtr, TCL_DYNAMIC);
+	/*
+	 * Remove the variable from the table and force it undefined in case
+	 * an unset trace brought it back from the dead.
+	 */
+
+	if (TclIsVarTraced(varPtr)) {
+	    ActiveVarTrace *activePtr;
+	    Tcl_HashEntry *tPtr = Tcl_FindHashEntry(&iPtr->varTraces,
+		    (char *) varPtr);
+	    VarTrace *tracePtr = (VarTrace *) Tcl_GetHashValue(tPtr);
+
+	    while (tracePtr) {
+		VarTrace *prevPtr = tracePtr;
+
+		tracePtr = tracePtr->nextPtr;
+		prevPtr->nextPtr = NULL;
+		Tcl_EventuallyFree((ClientData) prevPtr, TCL_DYNAMIC);
+	    }
+	    Tcl_DeleteHashEntry(tPtr);
+	    varPtr->flags &= ~VAR_ALL_TRACES;
+	    for (activePtr = iPtr->activeVarTracePtr; activePtr != NULL;
+		    activePtr = activePtr->nextPtr) {
+		if (activePtr->varPtr == varPtr) {
+		    activePtr->nextTracePtr = NULL;
+		}
+	    }
 	}
-	CleanupVar(varPtr, NULL);
+	VarHashRefCount(varPtr)--;
+	VarHashDeleteEntry(varPtr);
     }
-    Tcl_DeleteHashTable(tablePtr);
+    VarHashDeleteTable(tablePtr);
 }
-
 
 /*
  *----------------------------------------------------------------------
  *
  * TclDeleteVars --
  *
- *	This procedure is called to recycle all the storage space
- *	associated with a table of variables. For this procedure
- *	to work correctly, it must not be possible for any of the
- *	variables in the table to be accessed from Tcl commands
- *	(e.g. from trace procedures).
+ *	This function is called to recycle all the storage space associated
+ *	with a table of variables. For this function to work correctly, it
+ *	must not be possible for any of the variables in the table to be
+ *	accessed from Tcl commands (e.g. from trace functions).
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Variables are deleted and trace procedures are invoked, if
- *	any are declared.
+ *	Variables are deleted and trace functions are invoked, if any are
+ *	declared.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclDeleteVars(iPtr, tablePtr)
-    Interp *iPtr;		/* Interpreter to which variables belong. */
-    Tcl_HashTable *tablePtr;	/* Hash table containing variables to
+TclDeleteVars(
+    Interp *iPtr,		/* Interpreter to which variables belong. */
+    TclVarHashTable *tablePtr)	/* Hash table containing variables to
 				 * delete. */
 {
     Tcl_Interp *interp = (Tcl_Interp *) iPtr;
     Tcl_HashSearch search;
-    Tcl_HashEntry *hPtr;
     register Var *varPtr;
-    Var *linkPtr;
     int flags;
-    ActiveVarTrace *activePtr;
-    Tcl_Obj *objPtr;
-    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+    Namespace *currNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
 
     /*
-     * Determine what flags to pass to the trace callback procedures.
+     * Determine what flags to pass to the trace callback functions.
      */
 
     flags = TCL_TRACE_UNSETS;
@@ -4694,102 +4558,13 @@ TclDeleteVars(iPtr, tablePtr)
 	flags |= TCL_NAMESPACE_ONLY;
     }
 
-    for (hPtr = Tcl_FirstHashEntry(tablePtr, &search);  hPtr != NULL;
-	 hPtr = Tcl_NextHashEntry(&search)) {
-	varPtr = (Var *) Tcl_GetHashValue(hPtr);
-
-	/*
-	 * For global/upvar variables referenced in procedures, decrement
-	 * the reference count on the variable referred to, and free
-	 * the referenced variable if it's no longer needed. Don't delete
-	 * the hash entry for the other variable if it's in the same table
-	 * as us: this will happen automatically later on.
-	 */
-
-	if (TclIsVarLink(varPtr)) {
-	    linkPtr = varPtr->value.linkPtr;
-	    linkPtr->refCount--;
-	    if ((linkPtr->refCount == 0) && TclIsVarUndefined(linkPtr)
-		    && (linkPtr->tracePtr == NULL)
-		    && (linkPtr->flags & VAR_IN_HASHTABLE)) {
-		if (linkPtr->hPtr == NULL) {
-		    ckfree((char *) linkPtr);
-		} else if (linkPtr->hPtr->tablePtr != tablePtr) {
-		    Tcl_DeleteHashEntry(linkPtr->hPtr);
-		    ckfree((char *) linkPtr);
-		}
-	    }
-	}
+    for (varPtr = VarHashFirstVar(tablePtr, &search); varPtr != NULL;
+	     varPtr = VarHashFirstVar(tablePtr, &search)) {
 
-	/*
-	 * Invoke traces on the variable that is being deleted, then
-	 * free up the variable's space (no need to free the hash entry
-	 * here, unless we're dealing with a global variable: the
-	 * hash entries will be deleted automatically when the whole
-	 * table is deleted). Note that we give CallVarTraces the variable's
-	 * fully-qualified name so that any called trace procedures can
-	 * refer to these variables being deleted.
-	 */
-
-	if (varPtr->tracePtr != NULL) {
-	    objPtr = Tcl_NewObj();
-	    Tcl_IncrRefCount(objPtr); /* until done with traces */
-	    Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr, objPtr);
-	    CallVarTraces(iPtr, (Var *) NULL, varPtr, Tcl_GetString(objPtr),
-		    NULL, flags, /* leaveErrMsg */ 0);
-	    Tcl_DecrRefCount(objPtr); /* free no longer needed obj */
-
-	    while (varPtr->tracePtr != NULL) {
-		VarTrace *tracePtr = varPtr->tracePtr;
-		varPtr->tracePtr = tracePtr->nextPtr;
-		Tcl_EventuallyFree((ClientData) tracePtr, TCL_DYNAMIC);
-	    }
-	    for (activePtr = iPtr->activeVarTracePtr; activePtr != NULL;
-		 activePtr = activePtr->nextPtr) {
-		if (activePtr->varPtr == varPtr) {
-		    activePtr->nextTracePtr = NULL;
-		}
-	    }
-	}
-	    
-	if (TclIsVarArray(varPtr)) {
-	    DeleteArray(iPtr, Tcl_GetHashKey(tablePtr, hPtr), varPtr,
-	            flags);
-	    varPtr->value.tablePtr = NULL;
-	}
-	if (TclIsVarScalar(varPtr) && (varPtr->value.objPtr != NULL)) {
-	    objPtr = varPtr->value.objPtr;
-	    TclDecrRefCount(objPtr);
-	    varPtr->value.objPtr = NULL;
-	}
-	varPtr->hPtr = NULL;
-	varPtr->tracePtr = NULL;
-	TclSetVarUndefined(varPtr);
-	TclSetVarScalar(varPtr);
-
-	/*
-	 * If the variable was a namespace variable, decrement its 
-	 * reference count. We are in the process of destroying its
-	 * namespace so that namespace will no longer "refer" to the
-	 * variable.
-	 */
-
-	if (varPtr->flags & VAR_NAMESPACE_VAR) {
-	    varPtr->flags &= ~VAR_NAMESPACE_VAR;
-	    varPtr->refCount--;
-	}
-
-	/*
-	 * Recycle the variable's memory space if there aren't any upvar's
-	 * pointing to it. If there are upvars to this variable, then the
-	 * variable will get freed when the last upvar goes away.
-	 */
-
-	if (varPtr->refCount == 0) {
-	    ckfree((char *) varPtr); /* this Var must be VAR_IN_HASHTABLE */
-	}
+	UnsetVarStruct(varPtr, NULL, iPtr, VarHashGetKey(varPtr), NULL, flags);
+	VarHashDeleteEntry(varPtr);
     }
-    Tcl_DeleteHashTable(tablePtr);
+    VarHashDeleteTable(tablePtr);
 }
 
 /*
@@ -4797,104 +4572,41 @@ TclDeleteVars(iPtr, tablePtr)
  *
  * TclDeleteCompiledLocalVars --
  *
- *	This procedure is called to recycle storage space associated with
- *	the compiler-allocated array of local variables in a procedure call
- *	frame. This procedure resembles TclDeleteVars above except that each
- *	variable is stored in a call frame and not a hash table. For this
- *	procedure to work correctly, it must not be possible for any of the
- *	variable in the table to be accessed from Tcl commands (e.g. from
- *	trace procedures).
+ *	This function is called to recycle storage space associated with the
+ *	compiler-allocated array of local variables in a procedure call frame.
+ *	This function resembles TclDeleteVars above except that each variable
+ *	is stored in a call frame and not a hash table. For this function to
+ *	work correctly, it must not be possible for any of the variable in the
+ *	table to be accessed from Tcl commands (e.g. from trace functions).
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	Variables are deleted and trace procedures are invoked, if
- *	any are declared.
+ *	Variables are deleted and trace functions are invoked, if any are
+ *	declared.
  *
  *----------------------------------------------------------------------
  */
 
 void
-TclDeleteCompiledLocalVars(iPtr, framePtr)
-    Interp *iPtr;		/* Interpreter to which variables belong. */
-    CallFrame *framePtr;	/* Procedure call frame containing
-				 * compiler-assigned local variables to
-				 * delete. */
+TclDeleteCompiledLocalVars(
+    Interp *iPtr,		/* Interpreter to which variables belong. */
+    CallFrame *framePtr)	/* Procedure call frame containing compiler-
+				 * assigned local variables to delete. */
 {
     register Var *varPtr;
-    int flags;			/* Flags passed to trace procedures. */
-    Var *linkPtr;
-    ActiveVarTrace *activePtr;
     int numLocals, i;
+    Tcl_Obj **namePtrPtr;
 
-    flags = TCL_TRACE_UNSETS;
     numLocals = framePtr->numCompiledLocals;
     varPtr = framePtr->compiledLocals;
-    for (i = 0;  i < numLocals;  i++) {
-	/*
-	 * For global/upvar variables referenced in procedures, decrement
-	 * the reference count on the variable referred to, and free
-	 * the referenced variable if it's no longer needed. Don't delete
-	 * the hash entry for the other variable if it's in the same table
-	 * as us: this will happen automatically later on.
-	 */
-
-	if (TclIsVarLink(varPtr)) {
-	    linkPtr = varPtr->value.linkPtr;
-	    linkPtr->refCount--;
-	    if ((linkPtr->refCount == 0) && TclIsVarUndefined(linkPtr)
-		    && (linkPtr->tracePtr == NULL)
-		    && (linkPtr->flags & VAR_IN_HASHTABLE)) {
-		if (linkPtr->hPtr == NULL) {
-		    ckfree((char *) linkPtr);
-		} else {
-		    Tcl_DeleteHashEntry(linkPtr->hPtr);
-		    ckfree((char *) linkPtr);
-		}
-	    }
-	}
-
-	/*
-	 * Invoke traces on the variable that is being deleted. Then delete
-	 * the variable's trace records.
-	 */
-
-	if (varPtr->tracePtr != NULL) {
-	    CallVarTraces(iPtr, (Var *) NULL, varPtr, varPtr->name, NULL,
-		    flags, /* leaveErrMsg */ 0);
-	    while (varPtr->tracePtr != NULL) {
-		VarTrace *tracePtr = varPtr->tracePtr;
-		varPtr->tracePtr = tracePtr->nextPtr;
-		Tcl_EventuallyFree((ClientData) tracePtr, TCL_DYNAMIC);
-	    }
-	    for (activePtr = iPtr->activeVarTracePtr; activePtr != NULL;
-		 activePtr = activePtr->nextPtr) {
-		if (activePtr->varPtr == varPtr) {
-		    activePtr->nextTracePtr = NULL;
-		}
-	    }
-	}
-
-        /*
-	 * Now if the variable is an array, delete its element hash table.
-	 * Otherwise, if it's a scalar variable, decrement the ref count
-	 * of its value.
-	 */
-	    
-	if (TclIsVarArray(varPtr) && (varPtr->value.tablePtr != NULL)) {
-	    DeleteArray(iPtr, varPtr->name, varPtr, flags);
-	}
-	if (TclIsVarScalar(varPtr) && (varPtr->value.objPtr != NULL)) {
-	    TclDecrRefCount(varPtr->value.objPtr);
-	    varPtr->value.objPtr = NULL;
-	}
-	varPtr->hPtr = NULL;
-	varPtr->tracePtr = NULL;
-	TclSetVarUndefined(varPtr);
-	TclSetVarScalar(varPtr);
-	varPtr++;
+    namePtrPtr = &localName(framePtr, 0);
+    for (i=0 ; i<numLocals ; i++, namePtrPtr++, varPtr++) {
+	UnsetVarStruct(varPtr, NULL, iPtr, *namePtrPtr, NULL,
+		TCL_TRACE_UNSETS);
     }
+    framePtr->numCompiledLocals = 0;
 }
 
 /*
@@ -4902,384 +4614,303 @@ TclDeleteCompiledLocalVars(iPtr, framePtr)
  *
  * DeleteArray --
  *
- *	This procedure is called to free up everything in an array
- *	variable.  It's the caller's responsibility to make sure
- *	that the array is no longer accessible before this procedure
- *	is called.
+ *	This function is called to free up everything in an array variable.
+ *	It's the caller's responsibility to make sure that the array is no
+ *	longer accessible before this function is called.
  *
  * Results:
  *	None.
  *
  * Side effects:
  *	All storage associated with varPtr's array elements is deleted
- *	(including the array's hash table). Deletion trace procedures for
- *	array elements are invoked, then deleted. Any pending traces for
- *	array elements are also deleted.
+ *	(including the array's hash table). Deletion trace functions for
+ *	array elements are invoked, then deleted. Any pending traces for array
+ *	elements are also deleted.
  *
  *----------------------------------------------------------------------
  */
 
 static void
-DeleteArray(iPtr, arrayName, varPtr, flags)
-    Interp *iPtr;			/* Interpreter containing array. */
-    CONST char *arrayName;	        /* Name of array (used for trace
-					 * callbacks). */
-    Var *varPtr;			/* Pointer to variable structure. */
-    int flags;				/* Flags to pass to CallVarTraces:
-					 * TCL_TRACE_UNSETS and sometimes
-					 * TCL_NAMESPACE_ONLY, or
-					 * TCL_GLOBAL_ONLY. */
+DeleteArray(
+    Interp *iPtr,		/* Interpreter containing array. */
+    Tcl_Obj *arrayNamePtr,	/* Name of array (used for trace callbacks),
+				 * or NULL if it is to be computed on
+				 * demand. */
+    Var *varPtr,		/* Pointer to variable structure. */
+    int flags)			/* Flags to pass to TclCallVarTraces:
+				 * TCL_TRACE_UNSETS and sometimes
+				 * TCL_NAMESPACE_ONLY or TCL_GLOBAL_ONLY. */
 {
     Tcl_HashSearch search;
-    register Tcl_HashEntry *hPtr;
+    Tcl_HashEntry *tPtr;
     register Var *elPtr;
     ActiveVarTrace *activePtr;
     Tcl_Obj *objPtr;
+    VarTrace *tracePtr;
 
-    DeleteSearches(varPtr);
-    for (hPtr = Tcl_FirstHashEntry(varPtr->value.tablePtr, &search);
-	 hPtr != NULL;  hPtr = Tcl_NextHashEntry(&search)) {
-	elPtr = (Var *) Tcl_GetHashValue(hPtr);
+    if (varPtr->flags & VAR_SEARCH_ACTIVE) {
+	DeleteSearches(iPtr, varPtr);
+    }
+    for (elPtr = VarHashFirstVar(varPtr->value.tablePtr, &search);
+	    elPtr != NULL; elPtr = VarHashNextVar(&search)) {
 	if (TclIsVarScalar(elPtr) && (elPtr->value.objPtr != NULL)) {
 	    objPtr = elPtr->value.objPtr;
 	    TclDecrRefCount(objPtr);
 	    elPtr->value.objPtr = NULL;
 	}
-	elPtr->hPtr = NULL;
-	if (elPtr->tracePtr != NULL) {
-	    elPtr->flags &= ~VAR_TRACE_ACTIVE;
-	    CallVarTraces(iPtr, (Var *) NULL, elPtr, arrayName,
-		    Tcl_GetHashKey(varPtr->value.tablePtr, hPtr), flags,
-		    /* leaveErrMsg */ 0);
-	    while (elPtr->tracePtr != NULL) {
-		VarTrace *tracePtr = elPtr->tracePtr;
-		elPtr->tracePtr = tracePtr->nextPtr;
-		Tcl_EventuallyFree((ClientData) tracePtr,TCL_DYNAMIC);
+
+	/*
+	 * Lie about the validity of the hashtable entry. In this way the
+	 * variables will be deleted by VarHashDeleteTable.
+	 */
+
+	VarHashInvalidateEntry(elPtr);
+	if (TclIsVarTraced(elPtr)) {
+	    /*
+	     * Compute the array name if it was not supplied.
+	     */
+
+	    if (elPtr->flags & VAR_TRACED_UNSET) {
+		Tcl_Obj *elNamePtr = VarHashGetKey(elPtr);
+
+		elPtr->flags &= ~VAR_TRACE_ACTIVE;
+		TclObjCallVarTraces(iPtr, NULL, elPtr, arrayNamePtr,
+			elNamePtr, flags,/* leaveErrMsg */ 0, -1);
+	    }
+	    tPtr = Tcl_FindHashEntry(&iPtr->varTraces, (char *) elPtr);
+	    tracePtr = (VarTrace *) Tcl_GetHashValue(tPtr);
+	    while (tracePtr) {
+		VarTrace *prevPtr = tracePtr;
+
+		tracePtr = tracePtr->nextPtr;
+		Tcl_EventuallyFree((ClientData) prevPtr, TCL_DYNAMIC);
 	    }
+	    Tcl_DeleteHashEntry(tPtr);
+	    elPtr->flags &= ~VAR_ALL_TRACES;
 	    for (activePtr = iPtr->activeVarTracePtr; activePtr != NULL;
-		 activePtr = activePtr->nextPtr) {
+		    activePtr = activePtr->nextPtr) {
 		if (activePtr->varPtr == elPtr) {
 		    activePtr->nextTracePtr = NULL;
 		}
 	    }
 	}
 	TclSetVarUndefined(elPtr);
-	TclSetVarScalar(elPtr);
 
 	/*
 	 * Even though array elements are not supposed to be namespace
-	 * variables, some combinations of [upvar] and [variable] may
-	 * create such beasts - see [Bug 604239]. This is necessary to
-	 * avoid leaking the corresponding Var struct, and is otherwise
-	 * harmless. 
+	 * variables, some combinations of [upvar] and [variable] may create
+	 * such beasts - see [Bug 604239]. This is necessary to avoid leaking
+	 * the corresponding Var struct, and is otherwise harmless.
 	 */
 
-	if (elPtr->flags & VAR_NAMESPACE_VAR) {
-	    elPtr->flags &= ~VAR_NAMESPACE_VAR;
-	    elPtr->refCount--;
-	}
-	if (elPtr->refCount == 0) {
-	    ckfree((char *) elPtr); /* element Vars are VAR_IN_HASHTABLE */
-	}
+	TclClearVarNamespaceVar(elPtr);
     }
-    Tcl_DeleteHashTable(varPtr->value.tablePtr);
+    VarHashDeleteTable(varPtr->value.tablePtr);
     ckfree((char *) varPtr->value.tablePtr);
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * CleanupVar --
+ * TclTclObjVarErrMsg --
  *
- *	This procedure is called when it looks like it may be OK to free up
- *	a variable's storage. If the variable is in a hashtable, its Var
- *	structure and hash table entry will be freed along with those of its
- *	containing array, if any. This procedure is called, for example,
- *	when a trace on a variable deletes a variable.
+ *	Generate a reasonable error message describing why a variable
+ *	operation failed.
  *
  * Results:
  *	None.
  *
  * Side effects:
- *	If the variable (or its containing array) really is dead and in a
- *	hashtable, then its Var structure, and possibly its hash table
- *	entry, is freed up.
+ *	The interp's result is set to hold a message identifying the variable
+ *	given by part1 and part2 and describing why the variable operation
+ *	failed.
  *
  *----------------------------------------------------------------------
  */
 
-static void
-CleanupVar(varPtr, arrayPtr)
-    Var *varPtr;		/* Pointer to variable that may be a
-				 * candidate for being expunged. */
-    Var *arrayPtr;		/* Array that contains the variable, or
-				 * NULL if this variable isn't an array
-				 * element. */
+void
+TclVarErrMsg(
+    Tcl_Interp *interp,		/* Interpreter in which to record message. */
+    const char *part1,
+    const char *part2,		/* Variable's two-part name. */
+    const char *operation,	/* String describing operation that failed,
+				 * e.g. "read", "set", or "unset". */
+    const char *reason)		/* String describing why operation failed. */
 {
-    if (TclIsVarUndefined(varPtr) && (varPtr->refCount == 0)
-	    && (varPtr->tracePtr == NULL)
-	    && (varPtr->flags & VAR_IN_HASHTABLE)) {
-	if (varPtr->hPtr != NULL) {
-	    Tcl_DeleteHashEntry(varPtr->hPtr);
-	}
-	ckfree((char *) varPtr);
+    Tcl_Obj *part2Ptr = NULL, *part1Ptr = Tcl_NewStringObj(part1, -1);
+
+    if (part2) {
+	part2Ptr = Tcl_NewStringObj(part2, -1);
     }
-    if (arrayPtr != NULL) {
-	if (TclIsVarUndefined(arrayPtr) && (arrayPtr->refCount == 0)
-		&& (arrayPtr->tracePtr == NULL)
-	        && (arrayPtr->flags & VAR_IN_HASHTABLE)) {
-	    if (arrayPtr->hPtr != NULL) {
-		Tcl_DeleteHashEntry(arrayPtr->hPtr);
-	    }
-	    ckfree((char *) arrayPtr);
-	}
+
+    TclObjVarErrMsg(interp, part1Ptr, part2Ptr, operation, reason, -1);
+
+    Tcl_DecrRefCount(part1Ptr);
+    if (part2Ptr) {
+	Tcl_DecrRefCount(part2Ptr);
     }
 }
-/*
- *----------------------------------------------------------------------
- *
- * VarErrMsg --
- *
- *      Generate a reasonable error message describing why a variable
- *      operation failed.
- *
- * Results:
- *      None.
- *
- * Side effects:
- *      The interp's result is set to hold a message identifying the
- *      variable given by part1 and part2 and describing why the
- *      variable operation failed.
- *
- *----------------------------------------------------------------------
- */
 
-static void
-VarErrMsg(interp, part1, part2, operation, reason)
-    Tcl_Interp *interp;         /* Interpreter in which to record message. */
-    CONST char *part1;
-    CONST char *part2;		/* Variable's two-part name. */
-    CONST char *operation;      /* String describing operation that failed,
-                                 * e.g. "read", "set", or "unset". */
-    CONST char *reason;         /* String describing why operation failed. */
+void
+TclObjVarErrMsg(
+    Tcl_Interp *interp,		/* Interpreter in which to record message. */
+    Tcl_Obj *part1Ptr,		/* (may be NULL, if index >= 0) */
+    Tcl_Obj *part2Ptr,		/* Variable's two-part name. */
+    const char *operation,	/* String describing operation that failed,
+				 * e.g. "read", "set", or "unset". */
+    const char *reason,		/* String describing why operation failed. */
+    int index)			/* Index into the local variable table of the
+				 * variable, or -1. Only used when part1Ptr is
+				 * NULL. */
 {
-    Tcl_ResetResult(interp);
-    Tcl_AppendResult(interp, "can't ", operation, " \"", part1,
-	    (char *) NULL);
-    if (part2 != NULL) {
-        Tcl_AppendResult(interp, "(", part2, ")", (char *) NULL);
+    if (!part1Ptr) {
+	part1Ptr = localName(((Interp *)interp)->varFramePtr, index);
     }
-    Tcl_AppendResult(interp, "\": ", reason, (char *) NULL);
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf("can't %s \"%s%s%s%s\": %s",
+	    operation, TclGetString(part1Ptr), (part2Ptr ? "(" : ""),
+	    (part2Ptr ? TclGetString(part2Ptr) : ""), (part2Ptr ? ")" : ""),
+	    reason));
 }
 
 /*
  *----------------------------------------------------------------------
  *
- * TclTraceVarExists --
- *
- *	This is called from info exists.  We need to trigger read
- *	and/or array traces because they may end up creating a
- *	variable that doesn't currently exist.
- *
- * Results:
- *	A pointer to the Var structure, or NULL.
- *
- * Side effects:
- *	May fill in error messages in the interp.
+ * Internal functions for variable name object types --
  *
  *----------------------------------------------------------------------
  */
 
-Var *
-TclVarTraceExists(interp, varName)
-    Tcl_Interp *interp;		/* The interpreter */
-    CONST char *varName;	/* The variable name */
-{
-    Var *varPtr;
-    Var *arrayPtr;
-
-    /*
-     * The choice of "create" flag values is delicate here, and
-     * matches the semantics of GetVar.  Things are still not perfect,
-     * however, because if you do "info exists x" you get a varPtr
-     * and therefore trigger traces.  However, if you do 
-     * "info exists x(i)", then you only get a varPtr if x is already
-     * known to be an array.  Otherwise you get NULL, and no trace
-     * is triggered.  This matches Tcl 7.6 semantics.
-     */
-
-    varPtr = TclLookupVar(interp, varName, (char *) NULL,
-            0, "access", /*createPart1*/ 0, /*createPart2*/ 1, &arrayPtr);
-
-    if (varPtr == NULL) {
-	return NULL;
-    }
-
-    if ((varPtr->tracePtr != NULL)
-	    || ((arrayPtr != NULL) && (arrayPtr->tracePtr != NULL))) {
-	CallVarTraces((Interp *)interp, arrayPtr, varPtr, varName, NULL,
-		TCL_TRACE_READS, /* leaveErrMsg */ 0);
-    }
-
-    /*
-     * If the variable doesn't exist anymore and no-one's using
-     * it, then free up the relevant structures and hash table entries.
-     */
+/*
+ * Panic functions that should never be called in normal operation.
+ */
 
-    if (TclIsVarUndefined(varPtr)) {
-	CleanupVar(varPtr, arrayPtr);
-	return NULL;
-    }
+static void
+PanicOnUpdateVarName(
+    Tcl_Obj *objPtr)
+{
+    Tcl_Panic("%s of type %s should not be called", "updateStringProc",
+	    objPtr->typePtr->name);
+}
 
-    return varPtr;
+static int
+PanicOnSetVarName(
+    Tcl_Interp *interp,
+    Tcl_Obj *objPtr)
+{
+    Tcl_Panic("%s of type %s should not be called", "setFromAnyProc",
+	    objPtr->typePtr->name);
+    return TCL_ERROR;
 }
-
-/*
- *----------------------------------------------------------------------
- *
- * Internal functions for variable name object types --
- *
- *----------------------------------------------------------------------
- */
 
-/* 
+/*
  * localVarName -
  *
  * INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1 = pointer to the corresponding Proc 
- *   twoPtrValue.ptr2 = index into locals table
-*/
-
-static void 
-FreeLocalVarName(objPtr)
-    Tcl_Obj *objPtr;
-{
-    register Proc *procPtr = (Proc *) objPtr->internalRep.twoPtrValue.ptr1;
-    procPtr->refCount--;
-    if (procPtr->refCount <= 0) {
-	TclProcCleanupProc(procPtr);
-    }
-}
+ *   ptrAndLongRep.ptr:   pointer to name obj in varFramePtr->localCache
+ *                        or NULL if it is this same obj
+ *   ptrAndLongRep.value: index into locals table
+ */
 
 static void
-DupLocalVarName(srcPtr, dupPtr)
-    Tcl_Obj *srcPtr;
-    Tcl_Obj *dupPtr;
+FreeLocalVarName(
+    Tcl_Obj *objPtr)
 {
-    register Proc *procPtr = (Proc *) srcPtr->internalRep.twoPtrValue.ptr1;
-
-    dupPtr->internalRep.twoPtrValue.ptr1 = (VOID *) procPtr;
-    dupPtr->internalRep.twoPtrValue.ptr2 = srcPtr->internalRep.twoPtrValue.ptr2;
-    procPtr->refCount++;
-    dupPtr->typePtr = &tclLocalVarNameType;
+    Tcl_Obj *namePtr = (Tcl_Obj *) objPtr->internalRep.ptrAndLongRep.ptr;
+    if (namePtr) {
+	Tcl_DecrRefCount(namePtr);
+    }
+    objPtr->typePtr = NULL;
 }
 
 static void
-UpdateLocalVarName(objPtr)
-    Tcl_Obj *objPtr;
+DupLocalVarName(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *dupPtr)
 {
-    Proc *procPtr = (Proc *) objPtr->internalRep.twoPtrValue.ptr1;
-    unsigned int index = (unsigned int) objPtr->internalRep.twoPtrValue.ptr2;
-    CompiledLocal *localPtr = procPtr->firstLocalPtr;
-    unsigned int nameLen;
+    Tcl_Obj *namePtr = srcPtr->internalRep.ptrAndLongRep.ptr;
 
-    if (localPtr == NULL) {
-	goto emptyName;
-    }
-    while (index--) {
-	localPtr = localPtr->nextPtr;
-	if (localPtr == NULL) {
-	    goto emptyName;
-	}
+    if (!namePtr) {
+	namePtr = srcPtr;
     }
+    dupPtr->internalRep.ptrAndLongRep.ptr = namePtr;
+    Tcl_IncrRefCount(namePtr);
 
-    nameLen = (unsigned int) localPtr->nameLength;
-    objPtr->bytes = ckalloc(nameLen + 1);
-    memcpy(objPtr->bytes, localPtr->name, nameLen + 1);
-    objPtr->length = nameLen;
-    return;
-
-    emptyName:
-    objPtr->bytes = ckalloc(1);
-    *(objPtr->bytes) = '\0';
-    objPtr->length = 0;
+    dupPtr->internalRep.ptrAndLongRep.value =
+	    srcPtr->internalRep.ptrAndLongRep.value;
+    dupPtr->typePtr = &localVarNameType;
 }
 
-/* 
+#if ENABLE_NS_VARNAME_CACHING
+/*
  * nsVarName -
  *
  * INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1: pointer to the namespace containing the 
- *                     reference.
- *   twoPtrValue.ptr2: pointer to the corresponding Var 
-*/
+ *   twoPtrValue.ptr1: pointer to the namespace containing the reference.
+ *   twoPtrValue.ptr2: pointer to the corresponding Var
+ */
 
-static void 
-FreeNsVarName(objPtr)
-    Tcl_Obj *objPtr;
+static void
+FreeNsVarName(
+    Tcl_Obj *objPtr)
 {
-    register Var *varPtr = (Var *) objPtr->internalRep.twoPtrValue.ptr2;
+    register Var *varPtr = objPtr->internalRep.twoPtrValue.ptr2;
 
-    varPtr->refCount--;
-    if (TclIsVarUndefined(varPtr) && (varPtr->refCount <= 0)) {
-	if (TclIsVarLink(varPtr)) {
-	    Var *linkPtr = varPtr->value.linkPtr;
-	    linkPtr->refCount--;
-	    if (TclIsVarUndefined(linkPtr) && (linkPtr->refCount <= 0)) {
-		CleanupVar(linkPtr, (Var *) NULL);
-	    }
+    if (TclIsVarInHash(varPtr)) {
+	varPtr->refCount--;
+	if (TclIsVarUndefined(varPtr) && (varPtr->refCount == 0)) {
+	    CleanupVar(varPtr, NULL);
 	}
-	CleanupVar(varPtr, NULL);
     }
+    objPtr->typePtr = NULL;
 }
 
 static void
-DupNsVarName(srcPtr, dupPtr)
-    Tcl_Obj *srcPtr;
-    Tcl_Obj *dupPtr;
+DupNsVarName(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *dupPtr)
 {
-    Namespace *nsPtr = (Namespace *) srcPtr->internalRep.twoPtrValue.ptr1;
-    register Var *varPtr = (Var *) srcPtr->internalRep.twoPtrValue.ptr2;
+    Namespace *nsPtr = srcPtr->internalRep.twoPtrValue.ptr1;
+    register Var *varPtr = srcPtr->internalRep.twoPtrValue.ptr2;
 
-    dupPtr->internalRep.twoPtrValue.ptr1 =  (VOID *) nsPtr;
-    dupPtr->internalRep.twoPtrValue.ptr2 = (VOID *) varPtr;
-    varPtr->refCount++;
+    dupPtr->internalRep.twoPtrValue.ptr1 = nsPtr;
+    dupPtr->internalRep.twoPtrValue.ptr2 = varPtr;
+    if (TclIsVarInHash(varPtr)) {
+	varPtr->refCount++;
+    }
     dupPtr->typePtr = &tclNsVarNameType;
 }
+#endif
 
-/* 
+/*
  * parsedVarName -
  *
  * INTERNALREP DEFINITION:
- *   twoPtrValue.ptr1 = pointer to the array name Tcl_Obj
- *                      (NULL if scalar)
- *   twoPtrValue.ptr2 = pointer to the element name string
- *                      (owned by this Tcl_Obj), or NULL if 
- *                      it is a scalar variable
+ *   twoPtrValue.ptr1 = pointer to the array name Tcl_Obj (NULL if scalar)
+ *   twoPtrValue.ptr2 = pointer to the element name string (owned by this
+ *			Tcl_Obj), or NULL if it is a scalar variable
  */
 
-static void 
-FreeParsedVarName(objPtr)
-    Tcl_Obj *objPtr;
+static void
+FreeParsedVarName(
+    Tcl_Obj *objPtr)
 {
-    register Tcl_Obj *arrayPtr =
-	    (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr1;
-    register char *elem = (char *) objPtr->internalRep.twoPtrValue.ptr2;
-    
+    register Tcl_Obj *arrayPtr = objPtr->internalRep.twoPtrValue.ptr1;
+    register char *elem = objPtr->internalRep.twoPtrValue.ptr2;
+
     if (arrayPtr != NULL) {
 	TclDecrRefCount(arrayPtr);
 	ckfree(elem);
     }
+    objPtr->typePtr = NULL;
 }
 
 static void
-DupParsedVarName(srcPtr, dupPtr)
-    Tcl_Obj *srcPtr;
-    Tcl_Obj *dupPtr;
+DupParsedVarName(
+    Tcl_Obj *srcPtr,
+    Tcl_Obj *dupPtr)
 {
-    register Tcl_Obj *arrayPtr =
-	    (Tcl_Obj *) srcPtr->internalRep.twoPtrValue.ptr1;
-    register char *elem = (char *) srcPtr->internalRep.twoPtrValue.ptr2;
+    register Tcl_Obj *arrayPtr = srcPtr->internalRep.twoPtrValue.ptr1;
+    register char *elem = srcPtr->internalRep.twoPtrValue.ptr2;
     char *elemCopy;
     unsigned int elemLen;
 
@@ -5292,30 +4923,31 @@ DupParsedVarName(srcPtr, dupPtr)
 	elem = elemCopy;
     }
 
-    dupPtr->internalRep.twoPtrValue.ptr1 = (VOID *) arrayPtr;
-    dupPtr->internalRep.twoPtrValue.ptr2 = (VOID *) elem;
+    dupPtr->internalRep.twoPtrValue.ptr1 = arrayPtr;
+    dupPtr->internalRep.twoPtrValue.ptr2 = elem;
     dupPtr->typePtr = &tclParsedVarNameType;
 }
 
 static void
-UpdateParsedVarName(objPtr)
-    Tcl_Obj *objPtr;
+UpdateParsedVarName(
+    Tcl_Obj *objPtr)
 {
-    Tcl_Obj *arrayPtr = (Tcl_Obj *) objPtr->internalRep.twoPtrValue.ptr1;
-    char *part2 = (char *) objPtr->internalRep.twoPtrValue.ptr2;
+    Tcl_Obj *arrayPtr = objPtr->internalRep.twoPtrValue.ptr1;
+    char *part2 = objPtr->internalRep.twoPtrValue.ptr2;
     char *part1, *p;
     int len1, len2, totalLen;
 
     if (arrayPtr == NULL) {
 	/*
-	 * This is a parsed scalar name: what is it
-	 * doing here?
+	 * This is a parsed scalar name: what is it doing here?
 	 */
-	panic("ERROR: scalar parsedVarName without a string rep.\n");
+
+	Tcl_Panic("scalar parsedVarName without a string rep");
     }
-    part1 = Tcl_GetStringFromObj(arrayPtr, &len1);
+
+    part1 = TclGetStringFromObj(arrayPtr, &len1);
     len2 = strlen(part2);
-	
+
     totalLen = len1 + len2 + 2;
     p = ckalloc((unsigned int) totalLen + 1);
     objPtr->bytes = p;
@@ -5327,5 +4959,749 @@ UpdateParsedVarName(objPtr)
     memcpy(p, part2, (unsigned int) len2);
     p += len2;
     *p++ = ')';
-    *p   = '\0';
+    *p = '\0';
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_FindNamespaceVar -- MOVED OVER from tclNamesp.c
+ *
+ *	Searches for a namespace variable, a variable not local to a
+ *	procedure. The variable can be either a scalar or an array, but may
+ *	not be an element of an array.
+ *
+ * Results:
+ *	Returns a token for the variable if it is found. Otherwise, if it
+ *	can't be found or there is an error, returns NULL and leaves an error
+ *	message in the interpreter's result object if "flags" contains
+ *	TCL_LEAVE_ERR_MSG.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tcl_Var
+Tcl_FindNamespaceVar(
+    Tcl_Interp *interp,		/* The interpreter in which to find the
+				 * variable. */
+    const char *name,		/* Variable's name. If it starts with "::",
+				 * will be looked up in global namespace.
+				 * Else, looked up first in contextNsPtr
+				 * (current namespace if contextNsPtr is
+				 * NULL), then in global namespace. */
+    Tcl_Namespace *contextNsPtr,/* Ignored if TCL_GLOBAL_ONLY flag set.
+				 * Otherwise, points to namespace in which to
+				 * resolve name. If NULL, look up name in the
+				 * current namespace. */
+    int flags)			/* An OR'd combination of: AVOID_RESOLVERS,
+				 * TCL_GLOBAL_ONLY (look up name only in
+				 * global namespace), TCL_NAMESPACE_ONLY (look
+				 * up only in contextNsPtr, or the current
+				 * namespace if contextNsPtr is NULL), and
+				 * TCL_LEAVE_ERR_MSG. If both TCL_GLOBAL_ONLY
+				 * and TCL_NAMESPACE_ONLY are given,
+				 * TCL_GLOBAL_ONLY is ignored. */
+{
+    Tcl_Obj *namePtr = Tcl_NewStringObj(name, -1);
+    Tcl_Var var;
+
+    var = ObjFindNamespaceVar(interp, namePtr, contextNsPtr, flags);
+    Tcl_DecrRefCount(namePtr);
+    return var;
+}
+
+static Tcl_Var
+ObjFindNamespaceVar(
+    Tcl_Interp *interp,		/* The interpreter in which to find the
+				 * variable. */
+    Tcl_Obj *namePtr,		/* Variable's name. If it starts with "::",
+				 * will be looked up in global namespace.
+				 * Else, looked up first in contextNsPtr
+				 * (current namespace if contextNsPtr is
+				 * NULL), then in global namespace. */
+    Tcl_Namespace *contextNsPtr,/* Ignored if TCL_GLOBAL_ONLY flag set.
+				 * Otherwise, points to namespace in which to
+				 * resolve name. If NULL, look up name in the
+				 * current namespace. */
+    int flags)			/* An OR'd combination of: AVOID_RESOLVERS,
+				 * TCL_GLOBAL_ONLY (look up name only in
+				 * global namespace), TCL_NAMESPACE_ONLY (look
+				 * up only in contextNsPtr, or the current
+				 * namespace if contextNsPtr is NULL), and
+				 * TCL_LEAVE_ERR_MSG. If both TCL_GLOBAL_ONLY
+				 * and TCL_NAMESPACE_ONLY are given,
+				 * TCL_GLOBAL_ONLY is ignored. */
+{
+    Interp *iPtr = (Interp *) interp;
+    ResolverScheme *resPtr;
+    Namespace *nsPtr[2], *cxtNsPtr;
+    const char *simpleName;
+    Var *varPtr;
+    register int search;
+    int result;
+    Tcl_Var var;
+    Tcl_Obj *simpleNamePtr;
+    char *name = TclGetString(namePtr);
+
+    /*
+     * If this namespace has a variable resolver, then give it first crack at
+     * the variable resolution. It may return a Tcl_Var value, it may signal
+     * to continue onward, or it may signal an error.
+     */
+
+    if ((flags & TCL_GLOBAL_ONLY) != 0) {
+	cxtNsPtr = (Namespace *) TclGetGlobalNamespace(interp);
+    } else if (contextNsPtr != NULL) {
+	cxtNsPtr = (Namespace *) contextNsPtr;
+    } else {
+	cxtNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
+    }
+
+    if (!(flags & AVOID_RESOLVERS) &&
+	    (cxtNsPtr->varResProc != NULL || iPtr->resolverPtr != NULL)) {
+	resPtr = iPtr->resolverPtr;
+
+	if (cxtNsPtr->varResProc) {
+	    result = (*cxtNsPtr->varResProc)(interp, name,
+		    (Tcl_Namespace *) cxtNsPtr, flags, &var);
+	} else {
+	    result = TCL_CONTINUE;
+	}
+
+	while (result == TCL_CONTINUE && resPtr) {
+	    if (resPtr->varResProc) {
+		result = (*resPtr->varResProc)(interp, name,
+			(Tcl_Namespace *) cxtNsPtr, flags, &var);
+	    }
+	    resPtr = resPtr->nextPtr;
+	}
+
+	if (result == TCL_OK) {
+	    return var;
+	} else if (result != TCL_CONTINUE) {
+	    return (Tcl_Var) NULL;
+	}
+    }
+
+    /*
+     * Find the namespace(s) that contain the variable.
+     */
+
+    TclGetNamespaceForQualName(interp, name, (Namespace *) contextNsPtr,
+	    flags, &nsPtr[0], &nsPtr[1], &cxtNsPtr, &simpleName);
+
+    /*
+     * Look for the variable in the variable table of its namespace. Be sure
+     * to check both possible search paths: from the specified namespace
+     * context and from the global namespace.
+     */
+
+    varPtr = NULL;
+    if (simpleName != name) {
+	simpleNamePtr = Tcl_NewStringObj(simpleName, -1);
+    } else {
+	simpleNamePtr = namePtr;
+    }
+
+    for (search = 0;  (search < 2) && (varPtr == NULL);  search++) {
+	if ((nsPtr[search] != NULL) && (simpleName != NULL)) {
+	    varPtr = VarHashFindVar(&nsPtr[search]->varTable, simpleNamePtr);
+	}
+    }
+    if (simpleName != name) {
+	Tcl_DecrRefCount(simpleNamePtr);
+    }
+    if ((varPtr == NULL) && (flags & TCL_LEAVE_ERR_MSG)) {
+	Tcl_ResetResult(interp);
+	Tcl_AppendResult(interp, "unknown variable \"", name, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "VARIABLE", name, NULL);
+    }
+    return (Tcl_Var) varPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * InfoVarsCmd -- (moved over from tclCmdIL.c)
+ *
+ *	Called to implement the "info vars" command that returns the list of
+ *	variables in the interpreter that match an optional pattern. The
+ *	pattern, if any, consists of an optional sequence of namespace names
+ *	separated by "::" qualifiers, which is followed by a glob-style
+ *	pattern that restricts which variables are returned. Handles the
+ *	following syntax:
+ *
+ *	    info vars ?pattern?
+ *
+ * Results:
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *
+ * Side effects:
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclInfoVarsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Interp *iPtr = (Interp *) interp;
+    char *varName, *pattern;
+    const char *simplePattern;
+    Tcl_HashSearch search;
+    Var *varPtr;
+    Namespace *nsPtr;
+    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
+    Namespace *currNsPtr = (Namespace *) Tcl_GetCurrentNamespace(interp);
+    Tcl_Obj *listPtr, *elemObjPtr;
+    int specificNsInPattern = 0;/* Init. to avoid compiler warning. */
+    Tcl_Obj *simplePatternPtr = NULL, *varNamePtr;
+
+    /*
+     * Get the pattern and find the "effective namespace" in which to list
+     * variables. We only use this effective namespace if there's no active
+     * Tcl procedure frame.
+     */
+
+    if (objc == 1) {
+	simplePattern = NULL;
+	nsPtr = currNsPtr;
+	specificNsInPattern = 0;
+    } else if (objc == 2) {
+	/*
+	 * From the pattern, get the effective namespace and the simple
+	 * pattern (no namespace qualifiers or ::'s) at the end. If an error
+	 * was found while parsing the pattern, return it. Otherwise, if the
+	 * namespace wasn't found, just leave nsPtr NULL: we will return an
+	 * empty list since no variables there can be found.
+	 */
+
+	Namespace *dummy1NsPtr, *dummy2NsPtr;
+
+	pattern = TclGetString(objv[1]);
+	TclGetNamespaceForQualName(interp, pattern, (Namespace *) NULL,
+		/*flags*/ 0, &nsPtr, &dummy1NsPtr, &dummy2NsPtr,
+		&simplePattern);
+
+	if (nsPtr != NULL) {	/* We successfully found the pattern's ns. */
+	    specificNsInPattern = (strcmp(simplePattern, pattern) != 0);
+	    if (simplePattern == pattern) {
+		simplePatternPtr = objv[1];
+	    } else {
+		simplePatternPtr = Tcl_NewStringObj(simplePattern, -1);
+	    }
+	    Tcl_IncrRefCount(simplePatternPtr);
+	}
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "?pattern?");
+	return TCL_ERROR;
+    }
+
+    /*
+     * If the namespace specified in the pattern wasn't found, just return.
+     */
+
+    if (nsPtr == NULL) {
+	return TCL_OK;
+    }
+
+    listPtr = Tcl_NewListObj(0, NULL);
+
+    if (!(iPtr->varFramePtr->isProcCallFrame & FRAME_IS_PROC)
+	    || specificNsInPattern) {
+	/*
+	 * There is no frame pointer, the frame pointer was pushed only to
+	 * activate a namespace, or we are in a procedure call frame but a
+	 * specific namespace was specified. Create a list containing only the
+	 * variables in the effective namespace's variable table.
+	 */
+
+	if (simplePattern && TclMatchIsTrivial(simplePattern)) {
+	    /*
+	     * If we can just do hash lookups, that simplifies things a lot.
+	     */
+
+	    varPtr = VarHashFindVar(&nsPtr->varTable, simplePatternPtr);
+	    if (varPtr) {
+		if (!TclIsVarUndefined(varPtr)
+			|| TclIsVarNamespaceVar(varPtr)) {
+		    if (specificNsInPattern) {
+			elemObjPtr = Tcl_NewObj();
+			Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr,
+				elemObjPtr);
+		    } else {
+			elemObjPtr = VarHashGetKey(varPtr);
+		    }
+		    Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
+		}
+	    } else if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
+		varPtr = VarHashFindVar(&globalNsPtr->varTable,
+			simplePatternPtr);
+		if (varPtr) {
+		    if (!TclIsVarUndefined(varPtr)
+			    || TclIsVarNamespaceVar(varPtr)) {
+			Tcl_ListObjAppendElement(interp, listPtr,
+				VarHashGetKey(varPtr));
+		    }
+		}
+	    }
+	} else {
+	    /*
+	     * Have to scan the tables of variables.
+	     */
+
+	    varPtr = VarHashFirstVar(&nsPtr->varTable, &search);
+	    while (varPtr) {
+		if (!TclIsVarUndefined(varPtr)
+			|| TclIsVarNamespaceVar(varPtr)) {
+		    varNamePtr = VarHashGetKey(varPtr);
+		    varName = TclGetString(varNamePtr);
+		    if ((simplePattern == NULL)
+			    || Tcl_StringMatch(varName, simplePattern)) {
+			if (specificNsInPattern) {
+			    elemObjPtr = Tcl_NewObj();
+			    Tcl_GetVariableFullName(interp, (Tcl_Var) varPtr,
+				    elemObjPtr);
+			} else {
+			    elemObjPtr = varNamePtr;
+			}
+			Tcl_ListObjAppendElement(interp, listPtr, elemObjPtr);
+		    }
+		}
+		varPtr = VarHashNextVar(&search);
+	    }
+
+	    /*
+	     * If the effective namespace isn't the global :: namespace, and a
+	     * specific namespace wasn't requested in the pattern (i.e., the
+	     * pattern only specifies variable names), then add in all global
+	     * :: variables that match the simple pattern. Of course, add in
+	     * only those variables that aren't hidden by a variable in the
+	     * effective namespace.
+	     */
+
+	    if ((nsPtr != globalNsPtr) && !specificNsInPattern) {
+		varPtr = VarHashFirstVar(&globalNsPtr->varTable,&search);
+		while (varPtr) {
+		    if (!TclIsVarUndefined(varPtr)
+			    || TclIsVarNamespaceVar(varPtr)) {
+			varNamePtr = VarHashGetKey(varPtr);
+			varName = TclGetString(varNamePtr);
+			if ((simplePattern == NULL)
+				|| Tcl_StringMatch(varName, simplePattern)) {
+			    if (VarHashFindVar(&nsPtr->varTable,
+				    varNamePtr) == NULL) {
+				Tcl_ListObjAppendElement(interp, listPtr,
+					varNamePtr);
+			    }
+			}
+		    }
+		    varPtr = VarHashNextVar(&search);
+		}
+	    }
+	}
+    } else if (((Interp *)interp)->varFramePtr->procPtr != NULL) {
+	AppendLocals(interp, listPtr, simplePatternPtr, 1);
+    }
+
+    if (simplePatternPtr) {
+	Tcl_DecrRefCount(simplePatternPtr);
+    }
+    Tcl_SetObjResult(interp, listPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * InfoGlobalsCmd -- (moved over from tclCmdIL.c)
+ *
+ *	Called to implement the "info globals" command that returns the list
+ *	of global variables matching an optional pattern. Handles the
+ *	following syntax:
+ *
+ *	    info globals ?pattern?
+ *
+ * Results:
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *
+ * Side effects:
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclInfoGlobalsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    char *varName, *pattern;
+    Namespace *globalNsPtr = (Namespace *) Tcl_GetGlobalNamespace(interp);
+    Tcl_HashSearch search;
+    Var *varPtr;
+    Tcl_Obj *listPtr, *varNamePtr, *patternPtr;
+
+    if (objc == 1) {
+	pattern = NULL;
+    } else if (objc == 2) {
+	pattern = TclGetString(objv[1]);
+
+	/*
+	 * Strip leading global-namespace qualifiers. [Bug 1057461]
+	 */
+
+	if (pattern[0] == ':' && pattern[1] == ':') {
+	    while (*pattern == ':') {
+		pattern++;
+	    }
+	}
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "?pattern?");
+	return TCL_ERROR;
+    }
+
+    /*
+     * Scan through the global :: namespace's variable table and create a list
+     * of all global variables that match the pattern.
+     */
+
+    listPtr = Tcl_NewListObj(0, NULL);
+    if (pattern != NULL && TclMatchIsTrivial(pattern)) {
+	if (pattern == TclGetString(objv[1])) {
+	    patternPtr = objv[1];
+	} else {
+	    patternPtr = Tcl_NewStringObj(pattern, -1);
+	}
+	Tcl_IncrRefCount(patternPtr);
+
+	varPtr = VarHashFindVar(&globalNsPtr->varTable, patternPtr);
+	if (varPtr) {
+	    if (!TclIsVarUndefined(varPtr)) {
+		Tcl_ListObjAppendElement(interp, listPtr,
+			VarHashGetKey(varPtr));
+	    }
+	}
+	Tcl_DecrRefCount(patternPtr);
+    } else {
+	for (varPtr = VarHashFirstVar(&globalNsPtr->varTable, &search);
+		varPtr != NULL;
+		varPtr = VarHashNextVar(&search)) {
+	    if (TclIsVarUndefined(varPtr)) {
+		continue;
+	    }
+	    varNamePtr = VarHashGetKey(varPtr);
+	    varName = TclGetString(varNamePtr);
+	    if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) {
+		Tcl_ListObjAppendElement(interp, listPtr, varNamePtr);
+	    }
+	}
+    }
+    Tcl_SetObjResult(interp, listPtr);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclInfoLocalsCmd -- (moved over from tclCmdIl.c)
+ *
+ *	Called to implement the "info locals" command to return a list of
+ *	local variables that match an optional pattern. Handles the following
+ *	syntax:
+ *
+ *	    info locals ?pattern?
+ *
+ * Results:
+ *	Returns TCL_OK if successful and TCL_ERROR if there is an error.
+ *
+ * Side effects:
+ *	Returns a result in the interpreter's result object. If there is an
+ *	error, the result is an error message.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclInfoLocalsCmd(
+    ClientData dummy,		/* Not used. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int objc,			/* Number of arguments. */
+    Tcl_Obj *const objv[])	/* Argument objects. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Tcl_Obj *patternPtr;
+    Tcl_Obj *listPtr;
+
+    if (objc == 1) {
+	patternPtr = NULL;
+    } else if (objc == 2) {
+	patternPtr = objv[1];
+    } else {
+	Tcl_WrongNumArgs(interp, 1, objv, "?pattern?");
+	return TCL_ERROR;
+    }
+
+    if (!(iPtr->varFramePtr->isProcCallFrame & FRAME_IS_PROC )) {
+	return TCL_OK;
+    }
+
+    /*
+     * Return a list containing names of first the compiled locals (i.e. the
+     * ones stored in the call frame), then the variables in the local hash
+     * table (if one exists).
+     */
+
+    listPtr = Tcl_NewListObj(0, NULL);
+    AppendLocals(interp, listPtr, patternPtr, 0);
+    Tcl_SetObjResult(interp, listPtr);
+    return TCL_OK;
 }
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AppendLocals --
+ *
+ *	Append the local variables for the current frame to the specified list
+ *	object.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AppendLocals(
+    Tcl_Interp *interp,		/* Current interpreter. */
+    Tcl_Obj *listPtr,		/* List object to append names to. */
+    Tcl_Obj *patternPtr,	/* Pattern to match against. */
+    int includeLinks)		/* 1 if upvars should be included, else 0. */
+{
+    Interp *iPtr = (Interp *) interp;
+    Var *varPtr;
+    int i, localVarCt;
+    Tcl_Obj **varNamePtr;
+    char *varName;
+    TclVarHashTable *localVarTablePtr;
+    Tcl_HashSearch search;
+    const char *pattern = patternPtr? TclGetString(patternPtr) : NULL;
+    Tcl_Obj *objNamePtr;
+
+    localVarCt = iPtr->varFramePtr->numCompiledLocals;
+    varPtr = iPtr->varFramePtr->compiledLocals;
+    localVarTablePtr = iPtr->varFramePtr->varTablePtr;
+    varNamePtr = &iPtr->varFramePtr->localCachePtr->varName0;
+
+    for (i = 0; i < localVarCt; i++, varNamePtr++) {
+	/*
+	 * Skip nameless (temporary) variables and undefined variables.
+	 */
+
+	if (*varNamePtr && !TclIsVarUndefined(varPtr)
+		&& (includeLinks || !TclIsVarLink(varPtr))) {
+	    varName = TclGetString(*varNamePtr);
+	    if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) {
+		Tcl_ListObjAppendElement(interp, listPtr, *varNamePtr);
+	    }
+	}
+	varPtr++;
+    }
+
+    /*
+     * Do nothing if no local variables.
+     */
+
+    if (localVarTablePtr == NULL) {
+	return;
+    }
+
+    /*
+     * Check for the simple and fast case.
+     */
+
+    if ((pattern != NULL) && TclMatchIsTrivial(pattern)) {
+	varPtr = VarHashFindVar(localVarTablePtr, patternPtr);
+	if (varPtr != NULL) {
+	    if (!TclIsVarUndefined(varPtr)
+		    && (includeLinks || !TclIsVarLink(varPtr))) {
+		Tcl_ListObjAppendElement(interp, listPtr,
+			VarHashGetKey(varPtr));
+	    }
+	}
+	return;
+    }
+
+    /*
+     * Scan over and process all local variables.
+     */
+
+    for (varPtr = VarHashFirstVar(localVarTablePtr, &search);
+	    varPtr != NULL;
+	    varPtr = VarHashNextVar(&search)) {
+	if (!TclIsVarUndefined(varPtr)
+		&& (includeLinks || !TclIsVarLink(varPtr))) {
+	    objNamePtr = VarHashGetKey(varPtr);
+	    varName = TclGetString(objNamePtr);
+	    if ((pattern == NULL) || Tcl_StringMatch(varName, pattern)) {
+		Tcl_ListObjAppendElement(interp, listPtr, objNamePtr);
+	    }
+	}
+    }
+}
+
+/*
+ * Hash table implementation - first, just copy and adapt the obj key stuff
+ */
+
+void
+TclInitVarHashTable(
+    TclVarHashTable *tablePtr,
+    Namespace *nsPtr)
+{
+    Tcl_InitCustomHashTable(&tablePtr->table,
+	    TCL_CUSTOM_TYPE_KEYS, &tclVarHashKeyType);
+    tablePtr->nsPtr = nsPtr;
+}
+
+static Tcl_HashEntry *
+AllocVarEntry(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    void *keyPtr)		/* Key to store in the hash table entry. */
+{
+    Tcl_Obj *objPtr = (Tcl_Obj *) keyPtr;
+    Tcl_HashEntry *hPtr;
+    Var *varPtr;
+
+    varPtr = (Var *) ckalloc(sizeof(VarInHash));
+    varPtr->flags = VAR_IN_HASHTABLE;
+    varPtr->value.objPtr = NULL;
+    VarHashRefCount(varPtr) = 1;
+
+    hPtr = &(((VarInHash *)varPtr)->entry);
+    Tcl_SetHashValue(hPtr, varPtr);
+    hPtr->key.objPtr = objPtr;
+    Tcl_IncrRefCount(objPtr);
+
+    return hPtr;
+}
+
+static void
+FreeVarEntry(
+    Tcl_HashEntry *hPtr)
+{
+    Var *varPtr = VarHashGetValue(hPtr);
+    Tcl_Obj *objPtr = hPtr->key.objPtr;
+
+    if (TclIsVarUndefined(varPtr) && !TclIsVarTraced(varPtr)
+	    && (VarHashRefCount(varPtr) == 1)) {
+	ckfree((char *) varPtr);
+    } else {
+	VarHashInvalidateEntry(varPtr);
+	TclSetVarUndefined(varPtr);
+	VarHashRefCount(varPtr)--;
+    }
+    Tcl_DecrRefCount(objPtr);
+}
+
+static int
+CompareVarKeys(
+    void *keyPtr,		/* New key to compare. */
+    Tcl_HashEntry *hPtr)	/* Existing key to compare. */
+{
+    Tcl_Obj *objPtr1 = (Tcl_Obj *) keyPtr;
+    Tcl_Obj *objPtr2 = hPtr->key.objPtr;
+    register const char *p1, *p2;
+    register int l1, l2;
+
+    /*
+     * If the object pointers are the same then they match.
+     */
+
+    if (objPtr1 == objPtr2) {
+	return 1;
+    }
+
+    /*
+     * Don't use Tcl_GetStringFromObj as it would prevent l1 and l2 being in a
+     * register.
+     */
+
+    p1 = TclGetString(objPtr1);
+    l1 = objPtr1->length;
+    p2 = TclGetString(objPtr2);
+    l2 = objPtr2->length;
+
+    /*
+     * Only compare if the string representations are of the same length.
+     */
+
+    if (l1 == l2) {
+	for (;; p1++, p2++, l1--) {
+	    if (*p1 != *p2) {
+		break;
+	    }
+	    if (l1 == 0) {
+		return 1;
+	    }
+	}
+    }
+
+    return 0;
+}
+
+static unsigned int
+HashVarKey(
+    Tcl_HashTable *tablePtr,	/* Hash table. */
+    void *keyPtr)		/* Key from which to compute hash value. */
+{
+    Tcl_Obj *objPtr = (Tcl_Obj *) keyPtr;
+    const char *string = TclGetString(objPtr);
+    int length = objPtr->length;
+    unsigned int result = 0;
+    int i;
+
+    /*
+     * I tried a zillion different hash functions and asked many other people
+     * for advice. Many people had their own favorite functions, all
+     * different, but no-one had much idea why they were good ones. I chose
+     * the one below (multiply by 9 and add new character) because of the
+     * following reasons:
+     *
+     * 1. Multiplying by 10 is perfect for keys that are decimal strings, and
+     *	  multiplying by 9 is just about as good.
+     * 2. Times-9 is (shift-left-3) plus (old). This means that each
+     *	  character's bits hang around in the low-order bits of the hash value
+     *	  for ever, plus they spread fairly rapidly up to the high-order bits
+     *	  to fill out the hash value. This seems works well both for decimal
+     *	  and non-decimal strings.
+     */
+
+    for (i=0 ; i<length ; i++) {
+	result += (result << 3) + string[i];
+    }
+    return result;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */
diff --git a/generic/tommath.h b/generic/tommath.h
new file mode 100644
index 0000000..028a84d
--- /dev/null
+++ b/generic/tommath.h
@@ -0,0 +1 @@
+#include "tclTomMathInt.h"
diff --git a/library/auto.tcl b/library/auto.tcl
index 519388d..b0fb61d 100644
--- a/library/auto.tcl
+++ b/library/auto.tcl
@@ -14,24 +14,28 @@
 #
 # Destroy all cached information for auto-loading and auto-execution,
 # so that the information gets recomputed the next time it's needed.
-# Also delete any procedures that are listed in the auto-load index
-# except those defined in this file.
+# Also delete any commands that are listed in the auto-load index.
 #
 # Arguments: 
 # None.
 
 proc auto_reset {} {
-    global auto_execs auto_index auto_oldpath
-    foreach p [info procs] {
-	if {[info exists auto_index($p)] && ![string match auto_* $p]
-		&& ([lsearch -exact {unknown pkg_mkIndex tclPkgSetup
-			tcl_findLibrary pkg_compareExtension
-			tclPkgUnknown tcl::MacOSXPkgUnknown
-			tcl::MacPkgUnknown} $p] < 0)} {
-	    rename $p {}
+    global auto_execs auto_index auto_path
+    if {[array exists auto_index]} {
+	foreach cmdName [array names auto_index] {
+	    set fqcn [namespace which $cmdName]
+	    if {$fqcn eq ""} {continue}
+	    rename $fqcn {}
+	}
+    }
+    unset -nocomplain auto_execs auto_index ::tcl::auto_oldpath
+    if {[catch {llength $auto_path}]} {
+	set auto_path [list [info library]]
+    } else {
+	if {[info library] ni $auto_path} {
+	    lappend auto_path [info library]
 	}
     }
-    unset -nocomplain auto_execs auto_index auto_oldpath
 }
 
 # tcl_findLibrary --
@@ -50,7 +54,7 @@ proc auto_reset {} {
 
 proc tcl_findLibrary {basename version patch initScript enVarName varName} {
     upvar #0 $varName the_library
-    global env errorInfo
+    global auto_path env tcl_platform
 
     set dirs {}
     set errors {}
@@ -73,21 +77,20 @@ proc tcl_findLibrary {basename version patch initScript enVarName varName} {
 
 	# 2. In the package script directory registered within
 	#    the configuration of the package itself.
-	#
-	# Only do this for Tcl 8.5+, when Tcl_RegsiterConfig() is available.
-	#if {[catch {
-	#    ::${basename}::pkgconfig get scriptdir,runtime
-	#} value] == 0} {
-	#    lappend dirs $value
-	#}
+
+	if {[catch {
+	    ::${basename}::pkgconfig get scriptdir,runtime
+	} value] == 0} {
+	    lappend dirs $value
+	}
 
 	# 3. Relative to auto_path directories.  This checks relative to the
 	# Tcl library as well as allowing loading of libraries added to the
 	# auto_path that is not relative to the core library or binary paths.
-	foreach d $::auto_path {
+	foreach d $auto_path {
 	    lappend dirs [file join $d $basename$version]
-	    if {$::tcl_platform(platform) eq "unix"
-		&& $::tcl_platform(os) eq "Darwin"} {
+	    if {$tcl_platform(platform) eq "unix"
+		    && $tcl_platform(os) eq "Darwin"} {
 		# 4. On MacOSX, check the Resources/Scripts subdir too
 		lappend dirs [file join $d $basename$version Resources Scripts]
 	    }
@@ -97,24 +100,22 @@ proc tcl_findLibrary {basename version patch initScript enVarName varName} {
 	# ../lib/foo1.0		(From bin directory in install hierarchy)
 	# ../../lib/foo1.0	(From bin/arch directory in install hierarchy)
 	# ../library		(From unix directory in build hierarchy)
-        set parentDir [file dirname [file dirname [info nameofexecutable]]]
-        set grandParentDir [file dirname $parentDir]
-        lappend dirs [file join $parentDir lib $basename$version]
-        lappend dirs [file join $grandParentDir lib $basename$version]
-        lappend dirs [file join $parentDir library]
-
+	#
 	# Remaining locations are out of date (when relevant, they ought
-	# to be covered by the $::auto_path seach above).
+	# to be covered by the $::auto_path seach above) and disabled.
 	#
 	# ../../library		(From unix/arch directory in build hierarchy)
 	# ../../foo1.0.1/library
 	#		(From unix directory in parallel build hierarchy)
 	# ../../../foo1.0.1/library
 	#		(From unix/arch directory in parallel build hierarchy)
-	#
-	# For the sake of extra compatibility safety, we keep adding these
-	# paths during the 8.4.* release series.
-	if {1} {
+
+        set parentDir [file dirname [file dirname [info nameofexecutable]]]
+        set grandParentDir [file dirname $parentDir]
+        lappend dirs [file join $parentDir lib $basename$version]
+        lappend dirs [file join $grandParentDir lib $basename$version]
+        lappend dirs [file join $parentDir library]
+	if {0} {
 	    lappend dirs [file join $grandParentDir library]
 	    lappend dirs [file join $grandParentDir $basename$patch library]
 	    lappend dirs [file join [file dirname $grandParentDir] \
@@ -124,17 +125,11 @@ proc tcl_findLibrary {basename version patch initScript enVarName varName} {
     # uniquify $dirs in order
     array set seen {}
     foreach i $dirs {
-	# For Tcl 8.4.9, we've disabled the use of [file normalize] here.
-	# This means that two different path names that are the same path
-	# in normalized form, will both remain on the search path.  There
-	# should be no harm in that, just a bit more file system access
-	# than is strictly necessary.
-	#
-	# [file normalize] has been disabled because of reports it has
-	# caused difficulties with the freewrap utility.  To keep
-	# compatibility with freewrap's needs, we'll keep this disabled
-	# throughout the 8.4.x (x >= 9) releases.  See Bug 1072136.
-	if {1 || [interp issafe]} {
+	# Take note that the [file normalize] below has been noted to
+	# cause difficulties for the freewrap utility.  See Bug 1072136.
+	# Until freewrap resolves the matter, one might work around the
+	# problem by disabling that branch.
+	if {[interp issafe]} {
 	    set norm $i
 	} else {
 	    set norm [file normalize $i]
@@ -152,10 +147,11 @@ proc tcl_findLibrary {basename version patch initScript enVarName varName} {
 	# we have a source command, but no file exists command
 
         if {[interp issafe] || [file exists $file]} {
-            if {![catch {uplevel #0 [list source $file]} msg]} {
+            if {![catch {uplevel #0 [list source $file]} msg opts]} {
                 return
             } else {
-                append errors "$file: $msg\n$errorInfo\n"
+                append errors "$file: $msg\n"
+		append errors [dict get $opts -errorinfo]\n
             }
         }
     }
@@ -195,8 +191,6 @@ if {[interp issafe]} {
 #		are given auto_mkindex will look for *.tcl.
 
 proc auto_mkindex {dir args} {
-    global errorCode errorInfo
-
     if {[interp issafe]} {
         error "can't generate index within safe interpreter"
     }
@@ -217,14 +211,12 @@ proc auto_mkindex {dir args} {
     }
 
     auto_mkindex_parser::init
-    foreach file [eval [linsert $args 0 glob --]] {
-        if {[catch {auto_mkindex_parser::mkindex $file} msg] == 0} {
+    foreach file [glob -- {*}$args] {
+        if {[catch {auto_mkindex_parser::mkindex $file} msg opts] == 0} {
             append index $msg
         } else {
-            set code $errorCode
-            set info $errorInfo
             cd $oldDir
-            error $msg $info $code
+	    return -options $opts $msg
         }
     }
     auto_mkindex_parser::cleanup
@@ -239,7 +231,6 @@ proc auto_mkindex {dir args} {
 # code for "proc" at the beginning of the line.
 
 proc auto_mkindex_old {dir args} {
-    global errorCode errorInfo
     set oldDir [pwd]
     cd $dir
     set dir [pwd]
@@ -253,7 +244,7 @@ proc auto_mkindex_old {dir args} {
     if {[llength $args] == 0} {
 	set args *.tcl
     }
-    foreach file [eval [linsert $args 0 glob --]] {
+    foreach file [glob -- {*}$args] {
 	set f ""
 	set error [catch {
 	    set f [open $file]
@@ -265,13 +256,11 @@ proc auto_mkindex_old {dir args} {
 		}
 	    }
 	    close $f
-	} msg]
+	} msg opts]
 	if {$error} {
-	    set code $errorCode
-	    set info $errorInfo
 	    catch {close $f}
 	    cd $oldDir
-	    error $msg $info $code
+	    return -options $opts $msg
 	}
     }
     set f ""
@@ -280,13 +269,12 @@ proc auto_mkindex_old {dir args} {
 	puts -nonewline $f $index
 	close $f
 	cd $oldDir
-    } msg]
+    } msg opts]
     if {$error} {
-	set code $errorCode
-	set info $errorInfo
 	catch {close $f}
 	cd $oldDir
 	error $msg $info $code
+	return -options $opts $msg
     }
 }
 
@@ -301,7 +289,10 @@ namespace eval auto_mkindex_parser {
     variable scriptFile ""      ;# name of file being processed
     variable contextStack ""    ;# stack of namespace scopes
     variable imports ""         ;# keeps track of all imported cmds
-    variable initCommands ""    ;# list of commands that create aliases
+    variable initCommands       ;# list of commands that create aliases
+    if {![info exists initCommands]} {
+	set initCommands [list]
+    }
 
     proc init {} {
 	variable parser
@@ -371,8 +362,8 @@ proc auto_mkindex_parser::mkindex {file} {
     # in case there were any $ in the proc name.  This will cause a problem
     # if somebody actually tries to have a \0 in their proc name.  Too bad
     # for them.
-    set contents [string map "$ \u0000" $contents]
-    
+    set contents [string map [list \$ \0] $contents]
+
     set index ""
     set contextStack ""
     set imports ""
@@ -516,10 +507,14 @@ proc auto_mkindex_parser::fullname {name} {
     } elseif {![string match ::* $name]} {
         set name "::$name"
     }
-    
+
     # Earlier, mkindex replaced all $'s with \0.  Now, we have to reverse
     # that replacement.
-    return [string map "\u0000 $" $name]
+    return [string map [list \0 \$] $name]
+}
+
+if {[llength $::auto_mkindex_parser::initCommands]} {
+    return
 }
 
 # Register all of the procedures for the auto_mkindex parser that
diff --git a/library/clock.tcl b/library/clock.tcl
new file mode 100644
index 0000000..32911b3
--- /dev/null
+++ b/library/clock.tcl
@@ -0,0 +1,4695 @@
+#----------------------------------------------------------------------
+#
+# clock.tcl --
+#
+#	This file implements the portions of the [clock] ensemble that
+#	are coded in Tcl.  Refer to the users' manual to see the description
+#	of the [clock] command and its subcommands.
+#
+#
+#----------------------------------------------------------------------
+#
+# Copyright (c) 2004,2005,2006,2007 by Kevin B. Kenny
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+#
+#----------------------------------------------------------------------
+
+# We must have message catalogs that support the root locale, and
+# we need access to the Registry on Windows systems.
+
+uplevel \#0 {
+    package require msgcat 1.4
+    if { $::tcl_platform(platform) eq {windows} } {
+	if { [catch { package require registry 1.1 }] } {
+	    namespace eval ::tcl::clock [list variable NoRegistry {}]
+	}
+    }
+}
+
+# Put the library directory into the namespace for the ensemble
+# so that the library code can find message catalogs and time zone
+# definition files.
+
+namespace eval ::tcl::clock \
+    [list variable LibDir [file dirname [info script]]]
+
+#----------------------------------------------------------------------
+#
+# clock --
+#
+#	Manipulate times.
+#
+# The 'clock' command manipulates time.  Refer to the user documentation
+# for the available subcommands and what they do.
+#
+#----------------------------------------------------------------------	
+
+namespace eval ::tcl::clock {
+
+    # Export the subcommands
+
+    namespace export format
+    namespace export clicks
+    namespace export microseconds
+    namespace export milliseconds
+    namespace export scan
+    namespace export seconds
+    namespace export add
+
+    # Import the message catalog commands that we use.
+
+    namespace import ::msgcat::mcload
+    namespace import ::msgcat::mclocale
+
+}
+
+#----------------------------------------------------------------------
+#
+# ::tcl::clock::Initialize --
+#
+#	Finish initializing the 'clock' subsystem
+#
+# Results:
+#	None.
+#
+# Side effects:
+#	Namespace variable in the 'clock' subsystem are initialized.
+#
+# The '::tcl::clock::Initialize' procedure initializes the namespace
+# variables and root locale message catalog for the 'clock' subsystem.
+# It is broken into a procedure rather than simply evaluated as a script
+# so that it will be able to use local variables, avoiding the dangers
+# of 'creative writing' as in Bug 1185933.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::Initialize {} {
+
+    rename ::tcl::clock::Initialize {}
+
+    variable LibDir
+
+    # Define the Greenwich time zone
+
+    proc InitTZData {} {
+	variable TZData
+	array unset TZData
+	set TZData(:Etc/GMT) {
+	    {-9223372036854775808 0 0 GMT}
+	}
+	set TZData(:GMT) $TZData(:Etc/GMT)
+	set TZData(:Etc/UTC) {
+	    {-9223372036854775808 0 0 UTC}
+	}
+	set TZData(:UTC) $TZData(:Etc/UTC)
+	set TZData(:localtime) {}
+    }
+    InitTZData
+
+    # Define the message catalog for the root locale.
+
+    ::msgcat::mcmset {} {
+	AM {am}
+	BCE {B.C.E.}
+	CE {C.E.}
+	DATE_FORMAT {%m/%d/%Y}
+	DATE_TIME_FORMAT {%a %b %e %H:%M:%S %Y}
+	DAYS_OF_WEEK_ABBREV	{
+	    Sun Mon Tue Wed Thu Fri Sat
+	}
+	DAYS_OF_WEEK_FULL	{
+	    Sunday Monday Tuesday Wednesday Thursday Friday Saturday
+	}
+	GREGORIAN_CHANGE_DATE	2299161
+	LOCALE_DATE_FORMAT {%m/%d/%Y}
+	LOCALE_DATE_TIME_FORMAT {%a %b %e %H:%M:%S %Y}
+	LOCALE_ERAS {}
+	LOCALE_NUMERALS		{
+	    00 01 02 03 04 05 06 07 08 09
+	    10 11 12 13 14 15 16 17 18 19
+	    20 21 22 23 24 25 26 27 28 29
+	    30 31 32 33 34 35 36 37 38 39
+	    40 41 42 43 44 45 46 47 48 49
+	    50 51 52 53 54 55 56 57 58 59
+	    60 61 62 63 64 65 66 67 68 69
+	    70 71 72 73 74 75 76 77 78 79
+	    80 81 82 83 84 85 86 87 88 89
+	    90 91 92 93 94 95 96 97 98 99
+	}
+	LOCALE_TIME_FORMAT {%H:%M:%S}
+	LOCALE_YEAR_FORMAT {%EC%Ey}
+	MONTHS_ABBREV		{
+	    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
+	}
+	MONTHS_FULL		{
+	    	January		February	March
+	    	April		May		June
+	    	July		August		September
+		October		November	December
+	}
+	PM {pm}
+	TIME_FORMAT {%H:%M:%S}
+	TIME_FORMAT_12 {%I:%M:%S %P}
+	TIME_FORMAT_24 {%H:%M}
+	TIME_FORMAT_24_SECS {%H:%M:%S}
+    }
+
+    # Define a few Gregorian change dates for other locales.  In most cases
+    # the change date follows a language, because a nation's colonies changed
+    # at the same time as the nation itself.  In many cases, different
+    # national boundaries existed; the dominating rule is to follow the
+    # nation's capital.
+
+    # Italy, Spain, Portugal, Poland
+
+    ::msgcat::mcset it GREGORIAN_CHANGE_DATE 2299161
+    ::msgcat::mcset es GREGORIAN_CHANGE_DATE 2299161
+    ::msgcat::mcset pt GREGORIAN_CHANGE_DATE 2299161
+    ::msgcat::mcset pl GREGORIAN_CHANGE_DATE 2299161
+
+    # France, Austria
+
+    ::msgcat::mcset fr GREGORIAN_CHANGE_DATE 2299227
+
+    # For Belgium, we follow Southern Netherlands; Liege Diocese
+    # changed several weeks later.
+
+    ::msgcat::mcset fr_BE GREGORIAN_CHANGE_DATE 2299238
+    ::msgcat::mcset nl_BE GREGORIAN_CHANGE_DATE 2299238
+
+    # Austria
+
+    ::msgcat::mcset de_AT GREGORIAN_CHANGE_DATE 2299527
+
+    # Hungary
+
+    ::msgcat::mcset hu GREGORIAN_CHANGE_DATE 2301004
+
+    # Germany, Norway, Denmark (Catholic Germany changed earlier)
+
+    ::msgcat::mcset de_DE GREGORIAN_CHANGE_DATE 2342032
+    ::msgcat::mcset nb GREGORIAN_CHANGE_DATE 2342032    
+    ::msgcat::mcset nn GREGORIAN_CHANGE_DATE 2342032
+    ::msgcat::mcset no GREGORIAN_CHANGE_DATE 2342032
+    ::msgcat::mcset da GREGORIAN_CHANGE_DATE 2342032
+
+    # Holland (Brabant, Gelderland, Flanders, Friesland, etc. changed
+    # at various times)
+
+    ::msgcat::mcset nl GREGORIAN_CHANGE_DATE 2342165
+
+    # Protestant Switzerland (Catholic cantons changed earlier)
+
+    ::msgcat::mcset fr_CH GREGORIAN_CHANGE_DATE 2361342
+    ::msgcat::mcset it_CH GREGORIAN_CHANGE_DATE 2361342
+    ::msgcat::mcset de_CH GREGORIAN_CHANGE_DATE 2361342
+
+    # English speaking countries
+
+    ::msgcat::mcset en GREGORIAN_CHANGE_DATE 2361222
+
+    # Sweden (had several changes onto and off of the Gregorian calendar)
+
+    ::msgcat::mcset sv GREGORIAN_CHANGE_DATE 2361390
+
+    # Russia
+
+    ::msgcat::mcset ru GREGORIAN_CHANGE_DATE 2421639
+
+    # Romania (Transylvania changed earler - perhaps de_RO should show
+    # the earlier date?)
+
+    ::msgcat::mcset ro GREGORIAN_CHANGE_DATE 2422063
+
+    # Greece
+
+    ::msgcat::mcset el GREGORIAN_CHANGE_DATE 2423480
+    
+    #------------------------------------------------------------------
+    #
+    #				CONSTANTS
+    #
+    #------------------------------------------------------------------
+
+    # Paths at which binary time zone data for the Olson libraries
+    # are known to reside on various operating systems
+
+    variable ZoneinfoPaths {}
+    foreach path {
+	/usr/share/zoneinfo
+	/usr/share/lib/zoneinfo
+	/usr/lib/zoneinfo
+	/usr/local/etc/zoneinfo
+    } {
+	if { [file isdirectory $path] } {
+	    lappend ZoneinfoPaths $path
+	}
+    }
+
+    # Define the directories for time zone data and message catalogs.
+
+    variable DataDir [file join $LibDir tzdata]
+    variable MsgDir [file join $LibDir msgs]
+
+    # Number of days in the months, in common years and leap years.
+
+    variable DaysInRomanMonthInCommonYear \
+	{ 31 28 31 30 31 30 31 31 30 31 30 31 }
+    variable DaysInRomanMonthInLeapYear \
+	{ 31 29 31 30 31 30 31 31 30 31 30 31 }
+    variable DaysInPriorMonthsInCommonYear [list 0]
+    variable DaysInPriorMonthsInLeapYear [list 0]
+    set i 0
+    foreach j $DaysInRomanMonthInCommonYear {
+	lappend DaysInPriorMonthsInCommonYear [incr i $j]
+    }
+    set i 0
+    foreach j $DaysInRomanMonthInLeapYear {
+	lappend DaysInPriorMonthsInLeapYear [incr i $j]
+    }
+
+    # Another epoch (Hi, Jeff!)
+
+    variable Roddenberry 1946
+
+    # Integer ranges
+
+    variable MINWIDE -9223372036854775808
+    variable MAXWIDE 9223372036854775807
+
+    # Day before Leap Day
+
+    variable FEB_28	       58
+
+    # Translation table to map Windows TZI onto cities, so that
+    # the Olson rules can apply.  In some cases the mapping is ambiguous,
+    # so it's wise to specify $::env(TCL_TZ) rather than simply depending
+    # on the system time zone.
+
+    # The keys are long lists of values obtained from the time zone
+    # information in the Registry.  In order, the list elements are:
+    # 	Bias StandardBias DaylightBias
+    #   StandardDate.wYear StandardDate.wMonth StandardDate.wDayOfWeek
+    #   StandardDate.wDay StandardDate.wHour StandardDate.wMinute
+    #   StandardDate.wSecond StandardDate.wMilliseconds
+    #   DaylightDate.wYear DaylightDate.wMonth DaylightDate.wDayOfWeek
+    #   DaylightDate.wDay DaylightDate.wHour DaylightDate.wMinute
+    #   DaylightDate.wSecond DaylightDate.wMilliseconds
+    # The values are the names of time zones where those rules apply.
+    # There is considerable ambiguity in certain zones; an attempt has
+    # been made to make a reasonable guess, but this table needs to be
+    # taken with a grain of salt.
+
+    variable WinZoneInfo [dict create {*}{
+	{-43200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :Pacific/Kwajalein
+	{-39600 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}	 :Pacific/Midway
+	{-36000 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :Pacific/Honolulu
+        {-32400 0 3600 0 11 0 1 2 0 0 0 0 3 0 2 2 0 0 0} :America/Anchorage
+        {-28800 0 3600 0 11 0 1 2 0 0 0 0 3 0 2 2 0 0 0} :America/Los_Angeles
+        {-28800 0 3600 0 10 0 5 2 0 0 0 0 4 0 1 2 0 0 0} :America/Tijuana
+        {-25200 0 3600 0 11 0 1 2 0 0 0 0 3 0 2 2 0 0 0} :America/Denver
+        {-25200 0 3600 0 10 0 5 2 0 0 0 0 4 0 1 2 0 0 0} :America/Chihuahua
+	{-25200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :America/Phoenix
+	{-21600 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :America/Regina
+	{-21600 0 3600 0 11 0 1 2 0 0 0 0 3 0 2 2 0 0 0} :America/Chicago
+        {-21600 0 3600 0 10 0 5 2 0 0 0 0 4 0 1 2 0 0 0} :America/Mexico_City
+	{-18000 0 3600 0 11 0 1 2 0 0 0 0 3 0 2 2 0 0 0} :America/New_York
+	{-18000 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :America/Indianapolis
+	{-14400 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :America/Caracas
+        {-14400 0 3600 0 3 6 2 23 59 59 999 0 10 6 2 23 59 59 999}
+							 :America/Santiago
+        {-14400 0 3600 0 2 0 5 2 0 0 0 0 11 0 1 2 0 0 0} :America/Manaus
+        {-14400 0 3600 0 11 0 1 2 0 0 0 0 3 0 2 2 0 0 0} :America/Halifax
+	{-12600 0 3600 0 10 0 5 2 0 0 0 0 4 0 1 2 0 0 0} :America/St_Johns
+	{-10800 0 3600 0 2 0 2 2 0 0 0 0 10 0 3 2 0 0 0} :America/Sao_Paulo
+	{-10800 0 3600 0 10 0 5 2 0 0 0 0 4 0 1 2 0 0 0} :America/Godthab
+	{-10800 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}  :America/Buenos_Aires
+        {-10800 0 3600 0 2 0 5 2 0 0 0 0 11 0 1 2 0 0 0} :America/Brasilia
+        {-10800 0 3600 0 3 0 2 2 0 0 0 0 10 0 1 2 0 0 0} :America/Montevideo
+	{-7200 0 3600 0 9 0 5 2 0 0 0 0 3 0 5 2 0 0 0}   :America/Noronha
+	{-3600 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Atlantic/Azores
+	{-3600 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Atlantic/Cape_Verde
+	{0 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}       :UTC
+	{0 0 3600 0 10 0 5 2 0 0 0 0 3 0 5 1 0 0 0}      :Europe/London
+	{3600 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}    :Africa/Kinshasa
+	{3600 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}   :CET
+        {7200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}    :Africa/Harare
+        {7200 0 3600 0 9 4 5 23 59 59 0 0 4 4 5 23 59 59 0}
+			      				 :Africa/Cairo
+	{7200 0 3600 0 10 0 5 4 0 0 0 0 3 0 5 3 0 0 0}   :Europe/Helsinki
+        {7200 0 3600 0 9 0 3 2 0 0 0 0 3 5 5 2 0 0 0}    :Asia/Jerusalem
+	{7200 0 3600 0 9 0 5 1 0 0 0 0 3 0 5 0 0 0 0}    :Europe/Bucharest
+	{7200 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}   :Europe/Athens
+        {7200 0 3600 0 9 5 5 1 0 0 0 0 3 4 5 0 0 0 0}    :Asia/Amman
+        {7200 0 3600 0 10 6 5 23 59 59 999 0 3 0 5 0 0 0 0}
+							 :Asia/Beirut
+        {7200 0 -3600 0 4 0 1 2 0 0 0 0 9 0 1 2 0 0 0}   :Africa/Windhoek
+	{10800 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Riyadh
+	{10800 0 3600 0 10 0 1 4 0 0 0 0 4 0 1 3 0 0 0}  :Asia/Baghdad
+	{10800 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Europe/Moscow
+	{12600 0 3600 0 9 2 4 2 0 0 0 0 3 0 1 2 0 0 0}   :Asia/Tehran
+        {14400 0 3600 0 10 0 5 5 0 0 0 0 3 0 5 4 0 0 0}  :Asia/Baku
+	{14400 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Muscat
+	{14400 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Tbilisi
+	{16200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Kabul
+	{18000 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Karachi
+	{18000 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Yekaterinburg
+	{19800 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Calcutta
+	{20700 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Katmandu
+	{21600 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Dhaka
+	{21600 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Novosibirsk
+	{23400 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Rangoon
+	{25200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Bangkok
+	{25200 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Krasnoyarsk
+	{28800 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Chongqing
+	{28800 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Irkutsk
+	{32400 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Asia/Tokyo
+	{32400 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Yakutsk
+	{34200 0 3600 0 3 0 5 3 0 0 0 0 10 0 5 2 0 0 0}  :Australia/Adelaide
+	{34200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Australia/Darwin
+	{36000 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Australia/Brisbane
+	{36000 0 3600 0 10 0 5 3 0 0 0 0 3 0 5 2 0 0 0}  :Asia/Vladivostok
+	{36000 0 3600 0 3 0 5 3 0 0 0 0 10 0 1 2 0 0 0}  :Australia/Hobart
+	{36000 0 3600 0 3 0 5 3 0 0 0 0 10 0 5 2 0 0 0}  :Australia/Sydney
+	{39600 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Pacific/Noumea
+	{43200 0 3600 0 3 0 3 3 0 0 0 0 10 0 1 2 0 0 0}  :Pacific/Auckland
+	{43200 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Pacific/Fiji
+	{46800 0 3600 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0}   :Pacific/Tongatapu
+    }]
+
+    # Groups of fields that specify the date, priorities, and 
+    # code bursts that determine Julian Day Number given those groups.
+    # The code in [clock scan] will choose the highest priority
+    # (lowest numbered) set of fields that determines the date.
+
+    variable DateParseActions {
+
+	{ seconds } 0 {}
+
+	{ julianDay } 1 {}
+
+	{ era century yearOfCentury month dayOfMonth } 2 {
+	    dict set date year [expr { 100 * [dict get $date century]
+				       + [dict get $date yearOfCentury] }]
+	    set date [GetJulianDayFromEraYearMonthDay $date[set date {}] \
+			  $changeover]
+	}
+	{ era century yearOfCentury dayOfYear } 2 {
+	    dict set date year [expr { 100 * [dict get $date century]
+				       + [dict get $date yearOfCentury] }]
+	    set date [GetJulianDayFromEraYearDay $date[set date {}] \
+			  $changeover]
+	}
+
+	{ century yearOfCentury month dayOfMonth } 3 {
+	    dict set date era CE
+	    dict set date year [expr { 100 * [dict get $date century]
+				       + [dict get $date yearOfCentury] }]
+	    set date [GetJulianDayFromEraYearMonthDay $date[set date {}] \
+			  $changeover]
+	}
+	{ century yearOfCentury dayOfYear } 3 {
+	    dict set date era CE
+	    dict set date year [expr { 100 * [dict get $date century]
+				       + [dict get $date yearOfCentury] }]
+	    set date [GetJulianDayFromEraYearDay $date[set date {}] \
+			  $changeover]
+	}
+	{ iso8601Century iso8601YearOfCentury iso8601Week dayOfWeek } 3 {
+	    dict set date era CE
+	    dict set date iso8601Year \
+		[expr { 100 * [dict get $date iso8601Century]
+			+ [dict get $date iso8601YearOfCentury] }]
+	    set date [GetJulianDayFromEraYearWeekDay $date[set date {}] \
+			 $changeover]
+	}
+
+	{ yearOfCentury month dayOfMonth } 4 {
+	    set date [InterpretTwoDigitYear $date[set date {}] $baseTime]
+	    dict set date era CE
+	    set date [GetJulianDayFromEraYearMonthDay $date[set date {}] \
+			  $changeover]
+	}
+	{ yearOfCentury dayOfYear } 4 {
+	    set date [InterpretTwoDigitYear $date[set date {}] $baseTime]
+	    dict set date era CE
+	    set date [GetJulianDayFromEraYearDay $date[set date {}] \
+			  $changeover]
+	}
+	{ iso8601YearOfCentury iso8601Week dayOfWeek } 4 {
+	    set date [InterpretTwoDigitYear \
+			  $date[set date {}] $baseTime \
+			  iso8601YearOfCentury iso8601Year]
+	    dict set date era CE
+	    set date [GetJulianDayFromEraYearWeekDay $date[set date {}] \
+			 $changeover]
+	}
+
+	{ month dayOfMonth } 5 {
+	    set date [AssignBaseYear $date[set date {}] \
+			  $baseTime $timeZone $changeover]
+	    set date [GetJulianDayFromEraYearMonthDay $date[set date {}] \
+			  $changeover]
+	}
+	{ dayOfYear } 5 {
+	    set date [AssignBaseYear $date[set date {}] \
+			  $baseTime $timeZone $changeover]
+	    set date [GetJulianDayFromEraYearDay $date[set date {}] \
+			 $changeover]
+	}
+	{ iso8601Week dayOfWeek } 5 {
+	    set date [AssignBaseIso8601Year $date[set date {}] \
+			  $baseTime $timeZone $changeover]
+	    set date [GetJulianDayFromEraYearWeekDay $date[set date {}] \
+			 $changeover]
+	}
+
+	{ dayOfMonth } 6 {
+	    set date [AssignBaseMonth $date[set date {}] \
+			  $baseTime $timeZone $changeover]
+	    set date [GetJulianDayFromEraYearMonthDay $date[set date {}] \
+			  $changeover]
+	}
+
+	{ dayOfWeek } 7 {
+	    set date [AssignBaseWeek $date[set date {}] \
+			  $baseTime $timeZone $changeover]
+	    set date [GetJulianDayFromEraYearWeekDay $date[set date {}] \
+			 $changeover]
+	}
+
+	{} 8 {
+	    set date [AssignBaseJulianDay $date[set date {}] \
+			  $baseTime $timeZone $changeover]
+	}
+    }
+
+    # Groups of fields that specify time of day, priorities,
+    # and code that processes them
+
+    variable TimeParseActions {
+
+	seconds 1 {}
+
+	{ hourAMPM minute second amPmIndicator } 2 {
+	    dict set date secondOfDay [InterpretHMSP $date]
+	}
+	{ hour minute second } 2 {
+	    dict set date secondOfDay [InterpretHMS $date]
+	}
+
+	{ hourAMPM minute amPmIndicator } 3 {
+	    dict set date second 0
+	    dict set date secondOfDay [InterpretHMSP $date]
+	}
+	{ hour minute } 3 {
+	    dict set date second 0
+	    dict set date secondOfDay [InterpretHMS $date]
+	}
+
+	{ hourAMPM amPmIndicator } 4 {
+	    dict set date minute 0
+	    dict set date second 0
+	    dict set date secondOfDay [InterpretHMSP $date]
+	}
+	{ hour } 4 {
+	    dict set date minute 0
+	    dict set date second 0
+	    dict set date secondOfDay [InterpretHMS $date]
+	}
+
+	{ } 5 {
+	    dict set date secondOfDay 0
+	}
+    }
+
+    # Legacy time zones, used primarily for parsing RFC822 dates.
+
+    variable LegacyTimeZone [dict create \
+	gmt	+0000 \
+	ut	+0000 \
+	utc	+0000 \
+	bst	+0100 \
+	wet	+0000 \
+	wat	-0100 \
+	at	-0200 \
+	nft	-0330 \
+	nst	-0330 \
+	ndt	-0230 \
+	ast	-0400 \
+	adt	-0300 \
+	est	-0500 \
+	edt	-0400 \
+	cst	-0600 \
+	cdt	-0500 \
+	mst	-0700 \
+	mdt	-0600 \
+	pst	-0800 \
+	pdt	-0700 \
+	yst	-0900 \
+	ydt	-0800 \
+	hst	-1000 \
+	hdt	-0900 \
+	cat	-1000 \
+	ahst	-1000 \
+	nt	-1100 \
+	idlw	-1200 \
+	cet	+0100 \
+	cest	+0200 \
+	met	+0100 \
+	mewt	+0100 \
+	mest	+0200 \
+	swt	+0100 \
+	sst	+0200 \
+	fwt	+0100 \
+	fst	+0200 \
+	eet	+0200 \
+	eest	+0300 \
+	bt	+0300 \
+	it	+0330 \
+	zp4	+0400 \
+	zp5	+0500 \
+	ist	+0530 \
+	zp6	+0600 \
+	wast	+0700 \
+	wadt	+0800 \
+	jt	+0730 \
+	cct	+0800 \
+	jst	+0900 \
+	kst     +0900 \
+	cast	+0930 \
+        jdt     +1000 \
+        kdt     +1000 \
+	cadt	+1030 \
+	east	+1000 \
+	eadt	+1030 \
+	gst	+1000 \
+	nzt	+1200 \
+	nzst	+1200 \
+	nzdt	+1300 \
+	idle	+1200 \
+	a	+0100 \
+	b	+0200 \
+	c	+0300 \
+	d	+0400 \
+	e	+0500 \
+	f	+0600 \
+	g	+0700 \
+	h	+0800 \
+	i	+0900 \
+	k	+1000 \
+	l	+1100 \
+	m	+1200 \
+	n	-0100 \
+	o	-0200 \
+	p	-0300 \
+	q	-0400 \
+	r	-0500 \
+	s	-0600 \
+	t	-0700 \
+	u	-0800 \
+	v	-0900 \
+	w	-1000 \
+	x	-1100 \
+	y	-1200 \
+	z	+0000 \
+    ]
+
+    # Caches
+
+    variable LocaleNumeralCache {};	# Dictionary whose keys are locale
+					# names and whose values are pairs
+					# comprising regexes matching numerals
+					# in the given locales and dictionaries
+					# mapping the numerals to their numeric
+					# values.
+    variable McLoaded {};		# Dictionary whose keys are locales
+					# in which [mcload] has been executed
+					# and whose values are second-level
+    					# dictionaries indexed by message
+    					# name and giving message text.
+    # variable CachedSystemTimeZone;    # If 'CachedSystemTimeZone' exists,
+					# it contains the value of the
+					# system time zone, as determined from
+					# the environment.
+    variable TimeZoneBad {};	        # Dictionary whose keys are time zone
+    					# names and whose values are 1 if
+					# the time zone is unknown and 0
+    					# if it is known.
+    variable TZData;			# Array whose keys are time zone names
+					# and whose values are lists of quads
+					# comprising start time, UTC offset,
+					# Daylight Saving Time indicator, and
+					# time zone abbreviation.
+    variable FormatProc;		# Array mapping format group
+					# and locale to the name of a procedure
+					# that renders the given format
+}
+::tcl::clock::Initialize
+
+#----------------------------------------------------------------------
+#
+# clock format --
+#
+#	Formats a count of seconds since the Posix Epoch as a time
+#	of day.
+#
+# The 'clock format' command formats times of day for output.
+# Refer to the user documentation to see what it does.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::format { args } {
+
+    variable FormatProc
+    variable TZData
+
+    lassign [ParseFormatArgs {*}$args] format locale timezone
+    set locale [string tolower $locale]
+    set clockval [lindex $args 0]
+
+    # Get the data for time changes in the given zone
+    
+    if {$timezone eq ""} {
+	set timezone [GetSystemTimeZone]
+    }
+    if {![info exists TZData($timezone)]} {
+	if {[catch {SetupTimeZone $timezone} retval opts]} {
+	    dict unset opts -errorinfo
+	    return -options $opts $retval
+	}
+    }
+    
+    # Build a procedure to format the result. Cache the built procedure's
+    # name in the 'FormatProc' array to avoid losing its internal
+    # representation, which contains the name resolution.
+    
+    set procName formatproc'$format'$locale
+    set procName [namespace current]::[string map {: {\:} \\ {\\}} $procName]
+    if {[info exists FormatProc($procName)]} {
+	set procName $FormatProc($procName)
+    } else {
+	set FormatProc($procName) \
+	    [ParseClockFormatFormat $procName $format $locale]
+    }
+    
+    return [$procName $clockval $timezone]
+
+}
+
+#----------------------------------------------------------------------
+#
+# ParseClockFormatFormat --
+#
+#	Builds and caches a procedure that formats a time value.
+#
+# Parameters:
+#	format -- Format string to use
+#	locale -- Locale in which the format string is to be interpreted
+#
+# Results:
+#	Returns the name of the newly-built procedure.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ParseClockFormatFormat {procName format locale} {
+
+    if {[namespace which $procName] ne {}} {
+	return $procName
+    }
+
+    # Map away the locale-dependent composite format groups
+    
+    EnterLocale $locale oldLocale
+
+    # Change locale if a fresh locale has been given on the command line.
+
+    set status [catch {
+
+	ParseClockFormatFormat2 $format $locale $procName
+
+    } result opts]
+
+    # Restore the locale
+
+    if { [info exists oldLocale] } {
+	mclocale $oldLocale
+    }
+
+    # Return either the error or the proc name
+
+    if { $status == 1 } {
+	if { [lindex [dict get $opts -errorcode] 0] eq {clock} } {
+	    return -code error $result
+	} else {
+	    return -options $opts $result
+	}
+    } else {
+	return $result
+    }
+
+}
+
+proc ::tcl::clock::ParseClockFormatFormat2 {format locale procName} {
+
+    set didLocaleEra 0
+    set didLocaleNumerals 0
+    set preFormatCode \
+	[string map [list @GREGORIAN_CHANGE_DATE@ \
+				       [mc GREGORIAN_CHANGE_DATE]] \
+	     {
+		 variable TZData
+		 set date [GetDateFields $clockval \
+			       $TZData($timezone) \
+			       @GREGORIAN_CHANGE_DATE@]
+	     }]
+    set formatString {}
+    set substituents {}
+    set state {}
+	
+    set format [LocalizeFormat $locale $format]
+
+    foreach char [split $format {}] {
+	switch -exact -- $state {
+	    {} {
+		if { [string equal % $char] } {
+		    set state percent
+		} else {
+		    append formatString $char
+		}
+	    }
+	    percent {			# Character following a '%' character
+		set state {}
+		switch -exact -- $char {
+		    % {			# A literal character, '%'
+			append formatString %%
+		    }
+		    a {			# Day of week, abbreviated
+			append formatString %s
+			append substituents \
+			    [string map \
+				 [list @DAYS_OF_WEEK_ABBREV@ \
+				      [list [mc DAYS_OF_WEEK_ABBREV]]] \
+				 { [lindex @DAYS_OF_WEEK_ABBREV@ \
+					[expr {[dict get $date dayOfWeek] \
+						   % 7}]]}]
+		    }			 
+		    A {			# Day of week, spelt out.
+			append formatString %s
+			append substituents \
+			    [string map \
+				 [list @DAYS_OF_WEEK_FULL@ \
+				      [list [mc DAYS_OF_WEEK_FULL]]] \
+				 { [lindex @DAYS_OF_WEEK_FULL@ \
+					[expr {[dict get $date dayOfWeek] \
+						   % 7}]]}]
+		    }
+		    b - h {		# Name of month, abbreviated.
+			append formatString %s
+			append substituents \
+			    [string map \
+				 [list @MONTHS_ABBREV@ \
+				      [list [mc MONTHS_ABBREV]]] \
+				 { [lindex @MONTHS_ABBREV@ \
+					[expr {[dict get $date month]-1}]]}]
+		    }
+		    B {			# Name of month, spelt out
+			append formatString %s
+			append substituents \
+			    [string map \
+				 [list @MONTHS_FULL@ \
+				      [list [mc MONTHS_FULL]]] \
+				 { [lindex @MONTHS_FULL@ \
+					[expr {[dict get $date month]-1}]]}]
+		    }
+		    C {			# Century number
+			append formatString %02d
+			append substituents \
+			    { [expr {[dict get $date year] / 100}]}
+		    }
+		    d {			# Day of month, with leading zero
+			append formatString %02d
+			append substituents { [dict get $date dayOfMonth]}
+		    }
+		    e {			# Day of month, without leading zero
+			append formatString %2d
+			append substituents { [dict get $date dayOfMonth]}
+		    }
+		    E {			# Format group in a locale-dependent
+					# alternative era
+			set state percentE
+			if {!$didLocaleEra} {
+			    append preFormatCode \
+				[string map \
+				     [list @LOCALE_ERAS@ \
+					  [list [mc LOCALE_ERAS]]] \
+				     {
+					 set date [GetLocaleEra \
+						       $date[set date {}] \
+						       @LOCALE_ERAS@]}] \n
+			    set didLocaleEra 1
+			}
+			if {!$didLocaleNumerals} {
+			    append preFormatCode \
+				[list set localeNumerals \
+				     [mc LOCALE_NUMERALS]] \n
+			    set didLocaleNumerals 1
+			}
+		    }
+		    g {			# Two-digit year relative to ISO8601
+					# week number
+			append formatString %02d
+			append substituents \
+			    { [expr { [dict get $date iso8601Year] % 100 }]}
+		    }
+		    G {			# Four-digit year relative to ISO8601
+					# week number
+			append formatString %02d
+			append substituents { [dict get $date iso8601Year]}
+		    }
+		    H {			# Hour in the 24-hour day, leading zero
+			append formatString %02d
+			append substituents \
+			    { [expr { [dict get $date localSeconds] \
+					  / 3600 % 24}]}
+		    }
+		    I {			# Hour AM/PM, with leading zero
+			append formatString %02d
+			append substituents \
+			    { [expr { ( ( ( [dict get $date localSeconds] \
+					    % 86400 ) \
+					  + 86400 \
+					  - 3600 ) \
+					/ 3600 ) \
+				      % 12 + 1 }] }
+		    }
+		    j {			# Day of year (001-366)
+			append formatString %03d
+			append substituents { [dict get $date dayOfYear]}
+		    }
+		    J {			# Julian Day Number
+			append formatString %07ld
+			append substituents { [dict get $date julianDay]}
+		    }
+		    k {			# Hour (0-23), no leading zero
+			append formatString %2d
+			append substituents \
+			    { [expr { [dict get $date localSeconds] 
+				      / 3600
+				      % 24 }]}
+		    }
+		    l {			# Hour (12-11), no leading zero
+			append formatString %2d
+			append substituents \
+			    { [expr { ( ( ( [dict get $date localSeconds]
+					   % 86400 )
+					 + 86400
+					 - 3600 )
+				       / 3600 )
+				     % 12 + 1 }]}
+		    }
+		    m {			# Month number, leading zero
+			append formatString %02d
+			append substituents { [dict get $date month]}
+		    }
+		    M {			# Minute of the hour, leading zero
+			append formatString %02d
+			append substituents \
+			    { [expr { [dict get $date localSeconds] 
+				      / 60
+				      % 60 }]}
+		    }
+		    n {			# A literal newline
+			append formatString \n
+		    }
+		    N {			# Month number, no leading zero
+			append formatString %2d
+			append substituents { [dict get $date month]}
+		    }
+		    O {			# A format group in the locale's
+					# alternative numerals
+			set state percentO
+			if {!$didLocaleNumerals} {
+			    append preFormatCode \
+				[list set localeNumerals \
+				     [mc LOCALE_NUMERALS]] \n
+			    set didLocaleNumerals 1
+			}
+		    }
+		    p {			# Localized 'AM' or 'PM' indicator
+					# converted to uppercase
+			append formatString %s
+			append preFormatCode \
+			    [list set AM [string toupper [mc AM]]] \n \
+			    [list set PM [string toupper [mc PM]]] \n
+			append substituents \
+			    { [expr {(([dict get $date localSeconds]
+				       % 86400) < 43200) ?
+				     $AM : $PM}]}
+		    }
+		    P {			# Localized 'AM' or 'PM' indicator
+			append formatString %s
+			append preFormatCode \
+			    [list set am [mc AM]] \n \
+			    [list set pm [mc PM]] \n
+			append substituents \
+			    { [expr {(([dict get $date localSeconds]
+				       % 86400) < 43200) ?
+				     $am : $pm}]}
+			
+		    }
+		    Q {			# Hi, Jeff!
+			append formatString %s
+			append substituents { [FormatStarDate $date]}
+		    }
+		    s {			# Seconds from the Posix Epoch
+			append formatString %s
+			append substituents { [dict get $date seconds]}
+		    }
+		    S {			# Second of the minute, with 
+			# leading zero
+			append formatString %02d
+			append substituents \
+			    { [expr { [dict get $date localSeconds] 
+				      % 60 }]}
+		    }
+		    t {			# A literal tab character
+			append formatString \t
+		    }
+		    u {			# Day of the week (1-Monday, 7-Sunday)
+			append formatString %1d
+			append substituents { [dict get $date dayOfWeek]}
+		    }
+		    U {			# Week of the year (00-53). The
+					# first Sunday of the year is the
+					# first day of week 01
+			append formatString %02d
+			append preFormatCode {
+			    set dow [dict get $date dayOfWeek]
+			    if { $dow == 7 } {
+				set dow 0
+			    }
+			    incr dow
+			    set UweekNumber \
+				[expr { ( [dict get $date dayOfYear] 
+					  - $dow + 7 )
+					/ 7 }]
+			}
+			append substituents { $UweekNumber}
+		    }
+		    V {			# The ISO8601 week number
+			append formatString %02d
+			append substituents { [dict get $date iso8601Week]}
+		    }
+		    w {			# Day of the week (0-Sunday,
+					# 6-Saturday)
+			append formatString %1d
+			append substituents \
+			    { [expr { [dict get $date dayOfWeek] % 7 }]}
+		    }
+		    W {			# Week of the year (00-53). The first
+					# Monday of the year is the first day
+					# of week 01.
+			append preFormatCode {
+			    set WweekNumber \
+				[expr { ( [dict get $date dayOfYear]
+					  - [dict get $date dayOfWeek]
+					  + 7 ) 
+					/ 7 }]
+			}
+			append formatString %02d
+			append substituents { $WweekNumber}
+		    }
+		    y {			# The two-digit year of the century
+			append formatString %02d
+			append substituents \
+			    { [expr { [dict get $date year] % 100 }]}
+		    }
+		    Y {			# The four-digit year
+			append formatString %04d
+			append substituents { [dict get $date year]}
+		    }
+		    z {			# The time zone as hours and minutes
+					# east (+) or west (-) of Greenwich
+			append formatString %s
+			append substituents { [FormatNumericTimeZone \
+						   [dict get $date tzOffset]]}
+		    }
+		    Z {			# The name of the time zone
+			append formatString %s
+			append substituents { [dict get $date tzName]}
+		    }
+		    % {			# A literal percent character
+			append formatString %%
+		    }
+		    default {		# An unknown escape sequence
+			append formatString %% $char
+		    }
+		}
+	    }
+	    percentE {			# Character following %E
+		set state {}
+		switch -exact -- $char {
+		    E {
+			append formatString %s
+			append substituents { } \
+			    [string map \
+				 [list @BCE@ [list [mc BCE]] \
+				      @CE@ [list [mc CE]]] \
+				      {[dict get {BCE @BCE@ CE @CE@} \
+					    [dict get $date era]]}]
+		    }
+		    C {			# Locale-dependent era
+			append formatString %s
+			append substituents { [dict get $date localeEra]}
+		    }
+		    y {			# Locale-dependent year of the era
+			append preFormatCode {
+			    set y [dict get $date localeYear]
+			    if { $y >= 0 && $y < 100 } {
+				set Eyear [lindex $localeNumerals $y]
+			    } else {
+				set Eyear $y
+			    }
+			}
+			append formatString %s
+			append substituents { $Eyear}
+		    }
+		    default {		# Unknown %E format group
+			append formatString %%E $char
+		    }
+		}
+	    }
+	    percentO {			# Character following %O
+		set state {}
+		switch -exact -- $char {
+		    d - e {		# Day of the month in alternative 
+			# numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [dict get $date dayOfMonth]]}
+		    }
+		    H - k {		# Hour of the day in alternative
+					# numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [expr { [dict get $date localSeconds] 
+					   / 3600
+					   % 24 }]]}
+		    }
+		    I - l {		# Hour (12-11) AM/PM in alternative
+					# numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [expr { ( ( ( [dict get $date localSeconds]
+						 % 86400 )
+					       + 86400
+					       - 3600 )
+					     / 3600 )
+					   % 12 + 1 }]]}
+		    }
+		    m {			# Month number in alternative numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals [dict get $date month]]}
+		    }
+		    M {			# Minute of the hour in alternative
+					# numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [expr { [dict get $date localSeconds] 
+					   / 60
+					   % 60 }]]}
+		    }
+		    S {			# Second of the minute in alternative
+					# numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [expr { [dict get $date localSeconds] 
+					   % 60 }]]}
+		    }
+		    u {			# Day of the week (Monday=1,Sunday=7)
+					# in alternative numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [dict get $date dayOfWeek]]}
+			}
+		    w {			# Day of the week (Sunday=0,Saturday=6)
+					# in alternative numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [expr { [dict get $date dayOfWeek] % 7 }]]}
+		    }
+		    y {			# Year of the century in alternative
+					# numerals
+			append formatString %s
+			append substituents \
+			    { [lindex $localeNumerals \
+				   [expr { [dict get $date year] % 100 }]]}
+		    }
+		    default {	# Unknown format group
+			append formatString %%O $char
+		    }
+		}
+	    }
+	}
+    }
+	
+    # Clean up any improperly terminated groups
+    
+    switch -exact -- $state {
+	percent {
+	    append formatString %%
+	}
+	percentE {
+	    append retval %%E
+	}
+	percentO {
+	    append retval %%O
+	}
+    }
+
+    proc $procName {clockval timezone} "
+        $preFormatCode
+        return \[::format [list $formatString] $substituents\]
+    "
+
+    #    puts [list $procName [info args $procName] [info body $procName]]
+
+    return $procName
+}
+
+#----------------------------------------------------------------------
+#
+# clock scan --
+#
+#	Inputs a count of seconds since the Posix Epoch as a time
+#	of day.
+#
+# The 'clock format' command scans times of day on input.
+# Refer to the user documentation to see what it does.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::scan { args } {
+
+    set format {}
+
+    # Check the count of args
+
+    if { [llength $args] < 1 || [llength $args] % 2 != 1 } {
+	set cmdName "clock scan"
+	return -code error \
+	    -errorcode [list CLOCK wrongNumArgs] \
+	    "wrong \# args: should be\
+             \"$cmdName string\
+             ?-base seconds?\
+             ?-format string? ?-gmt boolean?\
+             ?-locale LOCALE? ?-timezone ZONE?\""
+    }
+
+    # Set defaults
+
+    set base [clock seconds]
+    set string [lindex $args 0]
+    set format {}
+    set gmt 0
+    set locale c
+    set timezone [GetSystemTimeZone]
+
+    # Pick up command line options.
+
+    foreach { flag value } [lreplace $args 0 0] {
+	set saw($flag) {}
+	switch -exact -- $flag {
+	    -b - -ba - -bas - -base {
+		set base $value
+	    }
+	    -f - -fo - -for - -form - -forma - -format {
+		set format $value
+	    }
+	    -g - -gm - -gmt {
+		set gmt $value
+	    }
+	    -l - -lo - -loc - -loca - -local - -locale {
+		set locale [string tolower $value]
+	    }
+	    -t - -ti - -tim - -time - -timez - -timezo - -timezon - -timezone {
+		set timezone $value
+	    }
+	    default {
+		return -code error \
+		    -errorcode [list CLOCK badSwitch $flag] \
+		    "bad switch \"$flag\",\
+                     must be -base, -format, -gmt, -locale or -timezone"
+	    }
+	}
+    }
+
+    # Check options for validity
+
+    if { [info exists saw(-gmt)] && [info exists saw(-timezone)] } {
+	return -code error \
+	    -errorcode [list CLOCK gmtWithTimezone] \
+	    "cannot use -gmt and -timezone in same call"
+    }
+    if { [catch { expr { wide($base) } } result] } {
+	return -code error \
+	    "expected integer but got \"$base\"" 
+    }
+    if { ![string is boolean $gmt] } {
+	return -code error \
+	    "expected boolean value but got \"$gmt\""
+    } else {
+	if { $gmt } {
+	    set timezone :GMT
+	}
+    }
+
+    if { ![info exists saw(-format)] } {
+	# Perhaps someday we'll localize the legacy code. Right now,
+	# it's not localized.
+	if { [info exists saw(-locale)] } {
+	    return -code error \
+		-errorcode [list CLOCK flagWithLegacyFormat] \
+		"legacy \[clock scan\] does not support -locale"
+
+	}
+	return [FreeScan $string $base $timezone $locale]
+    }
+
+    # Change locale if a fresh locale has been given on the command line.
+
+    EnterLocale $locale oldLocale
+
+    set status [catch {
+
+	# Map away the locale-dependent composite format groups
+
+	set scanner [ParseClockScanFormat $format $locale]
+	$scanner $string $base $timezone
+
+    } result opts]
+
+    # Restore the locale
+
+    if { [info exists oldLocale] } {
+	mclocale $oldLocale
+    }
+
+    if { $status == 1 } {
+	if { [lindex [dict get $opts -errorcode] 0] eq {clock} } {
+	    return -code error $result
+	} else {
+	    return -options $opts $result
+	}
+    } else {
+	return $result
+    }
+
+}
+
+#----------------------------------------------------------------------
+#
+# FreeScan --
+#
+#	Scans a time in free format
+#
+# Parameters:
+#	string - String containing the time to scan
+#	base - Base time, expressed in seconds from the Epoch
+#	timezone - Default time zone in which the time will be expressed
+#	locale - (Unused) Name of the locale where the time will be scanned.
+#
+# Results:
+#	Returns the date and time extracted from the string in seconds
+#	from the epoch
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::FreeScan { string base timezone locale } {
+
+    variable TZData
+
+    # Get the data for time changes in the given zone
+    
+    if {[catch {SetupTimeZone $timezone} retval opts]} {
+	dict unset opts -errorinfo
+	return -options $opts $retval
+    }
+
+    # Extract year, month and day from the base time for the
+    # parser to use as defaults
+
+    set date [GetDateFields \
+		  $base \
+		  $TZData($timezone) \
+		  2361222]
+    dict set date secondOfDay [expr { [dict get $date localSeconds] 
+				      % 86400 }]
+
+    # Parse the date.  The parser will return a list comprising
+    # date, time, time zone, relative month/day/seconds, relative
+    # weekday, ordinal month.
+
+    set status [catch {
+	Oldscan $string \
+	    [dict get $date year] \
+	    [dict get $date month] \
+	    [dict get $date dayOfMonth]
+    } result]
+    if { $status != 0 } {
+	return -code error "unable to convert date-time string \"$string\": $result"
+    }
+
+    lassign $result parseDate parseTime parseZone parseRel \
+	parseWeekday parseOrdinalMonth
+
+    # If the caller supplied a date in the string, update the 'date' dict
+    # with the value. If the caller didn't specify a time with the date,
+    # default to midnight.
+
+    if { [llength $parseDate] > 0 } {
+	lassign $parseDate y m d
+	if { $y < 100 } {
+	    if { $y >= 39 } {
+		incr y 1900
+	    } else {
+		incr y 2000
+	    }
+	}
+	dict set date era CE
+	dict set date year $y
+	dict set date month $m
+	dict set date dayOfMonth $d
+	if { $parseTime eq {} } {
+	    set parseTime 0
+	}
+    }
+
+    # If the caller supplied a time zone in the string, it comes back
+    # as a two-element list; the first element is the number of minutes
+    # east of Greenwich, and the second is a Daylight Saving Time
+    # indicator ( 1 == yes, 0 == no, -1 == unknown ). We make it into
+    # a time zone indicator of +-hhmm.
+    
+    if { [llength $parseZone] > 0 } {
+	lassign $parseZone minEast dstFlag
+	set timezone [FormatNumericTimeZone \
+			  [expr { 60 * $minEast + 3600 * $dstFlag }]]
+	SetupTimeZone $timezone
+    }
+    dict set date tzName $timezone
+
+    # Assemble date, time, zone into seconds-from-epoch
+
+    set date [GetJulianDayFromEraYearMonthDay $date[set date {}] 2361222]
+    if { $parseTime ne {} } {
+	dict set date secondOfDay $parseTime
+    } elseif { [llength $parseWeekday] != 0 
+	       || [llength $parseOrdinalMonth] != 0 
+	       || ( [llength $parseRel] != 0 
+		    && ( [lindex $parseRel 0] != 0
+			 || [lindex $parseRel 1] != 0 ) ) } {
+	dict set date secondOfDay 0
+    }
+
+    dict set date localSeconds \
+	[expr { -210866803200
+		+ ( 86400 * wide([dict get $date julianDay]) )
+		+ [dict get $date secondOfDay] }]
+    dict set date tzName $timezone
+    set date [ConvertLocalToUTC $date[set date {}] $TZData($timezone) 2361222]
+    set seconds [dict get $date seconds]
+
+    # Do relative times
+
+    if { [llength $parseRel] > 0 } {
+	lassign $parseRel relMonth relDay relSecond
+	set seconds [add $seconds \
+			 $relMonth months $relDay days $relSecond seconds \
+			 -timezone $timezone -locale $locale]
+    }	
+
+    # Do relative weekday
+    
+    if { [llength $parseWeekday] > 0 } {
+
+	lassign $parseWeekday dayOrdinal dayOfWeek
+	set date2 [GetDateFields $seconds $TZData($timezone) 2361222]
+	dict set date2 era CE
+	set jdwkday [WeekdayOnOrBefore $dayOfWeek \
+			 [expr { [dict get $date2 julianDay] 
+				 + 6 }]]
+	incr jdwkday [expr { 7 * $dayOrdinal }]
+	if { $dayOrdinal > 0 } {
+	    incr jdwkday -7
+	}
+	dict set date2 secondOfDay \
+	    [expr { [dict get $date2 localSeconds] % 86400 }]
+	dict set date2 julianDay $jdwkday
+	dict set date2 localSeconds \
+	    [expr { -210866803200
+		    + ( 86400 * wide([dict get $date2 julianDay]) )
+		    + [dict get $date secondOfDay] }]
+	dict set date2 tzName $timezone
+	set date2 [ConvertLocalToUTC $date2[set date2 {}] $TZData($timezone) \
+		       2361222]
+	set seconds [dict get $date2 seconds]
+
+    }
+
+    # Do relative month
+
+    if { [llength $parseOrdinalMonth] > 0 } {
+
+	lassign $parseOrdinalMonth monthOrdinal monthNumber
+	if { $monthOrdinal > 0 } {
+	    set monthDiff [expr { $monthNumber - [dict get $date month] }]
+	    if { $monthDiff <= 0 } {
+		incr monthDiff 12
+	    }
+	    incr monthOrdinal -1
+	} else {
+	    set monthDiff [expr { [dict get $date month] - $monthNumber }]
+	    if { $monthDiff >= 0 } {
+		incr monthDiff -12
+	    }
+	    incr monthOrdinal
+	}
+	set seconds [add $seconds $monthOrdinal years $monthDiff months \
+			 -timezone $timezone -locale $locale]
+
+    }
+
+    return $seconds
+}
+
+
+#----------------------------------------------------------------------
+#
+# ParseClockScanFormat --
+#
+#	Parses a format string given to [clock scan -format]
+#
+# Parameters:
+#	formatString - The format being parsed
+#	locale - The current locale
+#
+# Results:
+#	Constructs and returns a procedure that accepts the
+#	string being scanned, the base time, and the time zone.  
+#	The procedure will either return the scanned time or
+#	else throw an error that should be rethrown to the caller
+#	of [clock scan]
+#
+# Side effects:
+#	The given procedure is defined in the ::tcl::clock
+#	namespace.  Scan procedures are not deleted once installed.
+#
+# Why do we parse dates by defining a procedure to parse them?
+# The reason is that by doing so, we have one convenient place to
+# cache all the information: the regular expressions that match the
+# patterns (which will be compiled), the code that assembles the
+# date information, everything lands in one place.  In this way,
+# when a given format is reused at run time, all the information
+# of how to apply it is available in a single place.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ParseClockScanFormat {formatString locale} {
+
+    # Check whether the format has been parsed previously, and return
+    # the existing recognizer if it has.
+
+    set procName scanproc'$formatString'$locale
+    set procName [namespace current]::[string map {: {\:} \\ {\\}} $procName]
+    if { [namespace which $procName] != {} } {
+	return $procName
+    }
+
+    variable DateParseActions
+    variable TimeParseActions
+
+    # Localize the %x, %X, etc. groups
+
+    set formatString [LocalizeFormat $locale $formatString]
+
+    # Condense whitespace
+
+    regsub -all {[[:space:]]+} $formatString { } formatString
+
+    # Walk through the groups of the format string.  In this loop, we
+    # accumulate:
+    #	- a regular expression that matches the string,
+    #   - the count of capturing brackets in the regexp
+    #   - a set of code that post-processes the fields captured by the regexp,
+    #   - a dictionary whose keys are the names of fields that are present
+    #     in the format string.
+
+    set re {^[[:space:]]*}
+    set captureCount 0
+    set postcode {}
+    set fieldSet [dict create]
+    set fieldCount 0
+    set postSep {}
+    set state {}
+
+    foreach c [split $formatString {}] {
+	switch -exact -- $state {
+	    {} {
+		if { $c eq "%" } {
+		    set state %
+		} elseif { $c eq " " } {
+		    append re {[[:space:]]+}
+		} else {
+		    if { ! [string is alnum $c] } {
+			append re \\
+			}
+		    append re $c
+		}
+	    }
+	    % {
+		set state {}
+		switch -exact -- $c {
+		    % {
+			append re %
+		    }
+		    { } {
+			append re "\[\[:space:\]\]*"
+		    }
+		    a - A { 		# Day of week, in words
+			set l {}
+			foreach \
+			    i {7 1 2 3 4 5 6} \
+			    abr [mc DAYS_OF_WEEK_ABBREV] \
+			    full [mc DAYS_OF_WEEK_FULL] {
+				dict set l [string tolower $abr] $i
+				dict set l [string tolower $full] $i
+				incr i
+			    }
+			lassign [UniquePrefixRegexp $l] regex lookup
+			append re ( $regex )
+			dict set fieldSet dayOfWeek [incr fieldCount]
+			append postcode "dict set date dayOfWeek \[" \
+			    "dict get " [list $lookup] " " \
+			    \[ {string tolower $field} [incr captureCount] \] \
+			    "\]\n"
+		    }
+		    b - B - h {		# Name of month
+			set i 0
+			set l {}
+			foreach \
+			    abr [mc MONTHS_ABBREV] \
+			    full [mc MONTHS_FULL] {
+				incr i
+				dict set l [string tolower $abr] $i
+				dict set l [string tolower $full] $i
+			    }
+			lassign [UniquePrefixRegexp $l] regex lookup
+			append re ( $regex )
+			dict set fieldSet month [incr fieldCount]
+			append postcode "dict set date month \[" \
+			    "dict get " [list $lookup] \
+			    " " \[ {string tolower $field} \
+			    [incr captureCount] \] \
+			    "\]\n"
+		    }
+		    C {			# Gregorian century
+			append re \\s*(\\d\\d?)
+			dict set fieldSet century [incr fieldCount]
+			append postcode "dict set date century \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    d - e {		# Day of month
+			append re \\s*(\\d\\d?)
+			dict set fieldSet dayOfMonth [incr fieldCount]
+			append postcode "dict set date dayOfMonth \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    E {			# Prefix for locale-specific codes
+			set state %E
+		    }
+		    g {			# ISO8601 2-digit year
+			append re \\s*(\\d\\d)
+			dict set fieldSet iso8601YearOfCentury \
+			    [incr fieldCount]
+			append postcode \
+			    "dict set date iso8601YearOfCentury \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    G {			# ISO8601 4-digit year
+			append re \\s*(\\d\\d)(\\d\\d)
+			dict set fieldSet iso8601Century [incr fieldCount]
+			dict set fieldSet iso8601YearOfCentury \
+			    [incr fieldCount]
+			append postcode \
+			    "dict set date iso8601Century \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n" \
+			    "dict set date iso8601YearOfCentury \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    H - k {		# Hour of day
+			append re \\s*(\\d\\d?)
+			dict set fieldSet hour [incr fieldCount]
+			append postcode "dict set date hour \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    I - l {		# Hour, AM/PM
+			append re \\s*(\\d\\d?)
+			dict set fieldSet hourAMPM [incr fieldCount]
+			append postcode "dict set date hourAMPM \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    j {			# Day of year
+			append re \\s*(\\d\\d?\\d?)
+			dict set fieldSet dayOfYear [incr fieldCount]
+			append postcode "dict set date dayOfYear \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    J {			# Julian Day Number
+			append re \\s*(\\d+)
+			dict set fieldSet julianDay [incr fieldCount]
+			append postcode "dict set date julianDay \[" \
+			    "::scan \$field" [incr captureCount] " %ld" \
+			    "\]\n"
+		    }
+		    m - N {			# Month number
+			append re \\s*(\\d\\d?)
+			dict set fieldSet month [incr fieldCount]
+			append postcode "dict set date month \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    M {			# Minute
+			append re \\s*(\\d\\d?)
+			dict set fieldSet minute [incr fieldCount]
+			append postcode "dict set date minute \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    n {			# Literal newline
+			append re \\n
+		    }
+		    O {			# Prefix for locale numerics
+			set state %O
+		    }
+		    p - P { 		# AM/PM indicator
+			set l [list [string tolower [mc AM]] 0 \
+				   [string tolower [mc PM]] 1]
+			lassign [UniquePrefixRegexp $l] regex lookup
+			append re ( $regex )
+			dict set fieldSet amPmIndicator [incr fieldCount]
+			append postcode "dict set date amPmIndicator \[" \
+			    "dict get " [list $lookup] " \[string tolower " \
+			    "\$field" \
+			    [incr captureCount] \
+			    "\]\]\n"
+		    }
+		    Q {			# Hi, Jeff!
+			append re {Stardate\s+([-+]?\d+)(\d\d\d)[.](\d)}
+			incr captureCount
+			dict set fieldSet seconds [incr fieldCount]
+			append postcode {dict set date seconds } \[ \
+			    {ParseStarDate $field} [incr captureCount] \
+			    { $field} [incr captureCount] \
+			    { $field} [incr captureCount] \
+			    \] \n
+		    }
+		    s {			# Seconds from Posix Epoch
+			# This next case is insanely difficult,
+			# because it's problematic to determine
+			# whether the field is actually within
+			# the range of a wide integer.
+			append re {\s*([-+]?\d+)}
+			dict set fieldSet seconds [incr fieldCount]
+			append postcode {dict set date seconds } \[ \
+			    {ScanWide $field} [incr captureCount] \] \n
+		    }
+		    S {			# Second
+			append re \\s*(\\d\\d?)
+			dict set fieldSet second [incr fieldCount]
+			append postcode "dict set date second \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    t {			# Literal tab character
+			append re \\t
+		    }
+		    u - w {		# Day number within week, 0 or 7 == Sun
+					# 1=Mon, 6=Sat
+			append re \\s*(\\d)
+			dict set fieldSet dayOfWeek [incr fieldCount]
+			append postcode {::scan $field} [incr captureCount] \
+			    { %d dow} \n \
+			    {
+				if { $dow == 0 } {
+				    set dow 7
+				} elseif { $dow > 7 } {
+				    return -code error \
+					-errorcode [list CLOCK badDayOfWeek] \
+					"day of week is greater than 7"
+				}
+				dict set date dayOfWeek $dow
+			    }
+		    }
+		    U {			# Week of year. The
+					# first Sunday of the year is the
+					# first day of week 01. No scan rule
+					# uses this group.
+			append re \\s*\\d\\d?
+		    }
+		    V {			# Week of ISO8601 year
+			
+			append re \\s*(\\d\\d?)
+			dict set fieldSet iso8601Week [incr fieldCount]
+			append postcode "dict set date iso8601Week \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    W {			# Week of the year (00-53). The first
+					# Monday of the year is the first day
+					# of week 01. No scan rule uses this
+					# group.
+			append re \\s*\\d\\d?
+		    }
+		    y {			# Two-digit Gregorian year
+			append re \\s*(\\d\\d?)
+			dict set fieldSet yearOfCentury [incr fieldCount]
+			append postcode "dict set date yearOfCentury \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    Y {			# 4-digit Gregorian year
+			append re \\s*(\\d\\d)(\\d\\d)
+			dict set fieldSet century [incr fieldCount]
+			dict set fieldSet yearOfCentury [incr fieldCount]
+			append postcode \
+			    "dict set date century \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n" \
+			    "dict set date yearOfCentury \[" \
+			    "::scan \$field" [incr captureCount] " %d" \
+			    "\]\n"
+		    }
+		    z - Z {			# Time zone name
+			append re {(?:([-+]\d\d(?::?\d\d(?::?\d\d)?)?)|([[:alnum:]]{1,4}))}
+			dict set fieldSet tzName [incr fieldCount]
+			append postcode \
+			    {if } \{ { $field} [incr captureCount] \
+			    { ne "" } \} { } \{ \n \
+			    {dict set date tzName $field} \
+			    $captureCount \n \
+			    \} { else } \{ \n \
+			    {dict set date tzName } \[ \
+			    {ConvertLegacyTimeZone $field} \
+			    [incr captureCount] \] \n \
+			    \} \n \
+		    }
+		    % {			# Literal percent character
+			append re %
+		    }
+		    default {
+			append re %
+			if { ! [string is alnum $c] } {
+			    append re \\
+			    }
+			append re $c
+		    }
+		}
+	    }
+	    %E {
+		switch -exact -- $c {
+		    C {			# Locale-dependent era
+			set d {}
+			foreach triple [mc LOCALE_ERAS] {
+			    lassign $triple t symbol year
+			    dict set d [string tolower $symbol] $year
+			}
+			lassign [UniquePrefixRegexp $d] regex lookup
+			append re (?: $regex )
+		    }
+		    E {
+			set l {}
+			dict set l [string tolower [mc BCE]] BCE
+			dict set l [string tolower [mc CE]] CE
+			dict set l b.c.e. BCE
+			dict set l c.e. CE
+			dict set l b.c. BCE
+			dict set l a.d. CE
+			lassign [UniquePrefixRegexp $l] regex lookup
+			append re ( $regex )
+			dict set fieldSet era [incr fieldCount]
+			append postcode "dict set date era \["\
+			    "dict get " [list $lookup] \
+			    { } \[ {string tolower $field} \
+			    [incr captureCount] \] \
+			    "\]\n"
+		    }
+		    y {			# Locale-dependent year of the era
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			incr captureCount
+		    }
+		    default {
+			append re %E
+			if { ! [string is alnum $c] } {
+			    append re \\
+			    }
+			append re $c
+		    }
+		}
+		set state {}
+	    }
+	    %O {
+		switch -exact -- $c {
+		    d - e {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet dayOfMonth [incr fieldCount]
+			append postcode "dict set date dayOfMonth \[" \
+			    "dict get " [list $lookup] " \$field" \
+			    [incr captureCount] \
+			    "\]\n"
+		    }
+		    H - k {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet hour [incr fieldCount]
+			append postcode "dict set date hour \[" \
+			    "dict get " [list $lookup] " \$field" \
+			    [incr captureCount] \
+			    "\]\n"
+		    }
+		    I - l {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet hourAMPM [incr fieldCount]
+			append postcode "dict set date hourAMPM \[" \
+			    "dict get " [list $lookup] " \$field" \
+			    [incr captureCount] \
+			    "\]\n"
+		    }
+		    m {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet month [incr fieldCount]
+			append postcode "dict set date month \[" \
+			    "dict get " [list $lookup] " \$field" \
+			    [incr captureCount] \
+			    "\]\n"
+		    }
+		    M {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet minute [incr fieldCount]
+			append postcode "dict set date minute \[" \
+			    "dict get " [list $lookup] " \$field" \
+			    [incr captureCount] \
+			    "\]\n"
+		    }
+		    S {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet second [incr fieldCount]
+			append postcode "dict set date second \[" \
+			    "dict get " [list $lookup] " \$field" \
+			    [incr captureCount] \
+			    "\]\n"
+		    }
+		    u - w {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet dayOfWeek [incr fieldCount]
+			append postcode "set dow \[dict get " [list $lookup] \
+			    { $field} [incr captureCount] \] \n \
+			    {
+				if { $dow == 0 } {
+				    set dow 7
+				} elseif { $dow > 7 } {
+				    return -code error \
+					-errorcode [list CLOCK badDayOfWeek] \
+					"day of week is greater than 7"
+				}
+				dict set date dayOfWeek $dow
+			    }				
+		    }
+		    y {
+			lassign [LocaleNumeralMatcher $locale] regex lookup
+			append re $regex
+			dict set fieldSet yearOfCentury [incr fieldCount]
+			append postcode {dict set date yearOfCentury } \[ \
+			    {dict get } [list $lookup] { $field} \
+			    [incr captureCount] \] \n
+		    }
+		    default {
+			append re %O
+			if { ! [string is alnum $c] } {
+			    append re \\
+			    }
+			append re $c
+		    }
+		}
+		set state {}
+	    }
+	}
+    }
+
+    # Clean up any unfinished format groups
+
+    append re $state \\s*\$
+
+    # Build the procedure
+
+    set procBody {}
+    append procBody "variable ::tcl::clock::TZData" \n
+    append procBody "if \{ !\[ regexp -nocase [list $re] \$string ->"
+    for { set i 1 } { $i <= $captureCount } { incr i } {
+	append procBody " " field $i
+    }
+    append procBody "\] \} \{" \n
+    append procBody {
+	return -code error -errorcode [list CLOCK badInputString] \
+	    {input string does not match supplied format}
+    }
+    append procBody \}\n
+    append procBody "set date \[dict create\]" \n
+    append procBody {dict set date tzName $timeZone} \n
+    append procBody $postcode
+    append procBody [list set changeover [mc GREGORIAN_CHANGE_DATE]] \n
+
+    # Get time zone if needed
+
+    if { ![dict exists $fieldSet seconds] 
+	 && ![dict exists $fieldSet starDate] } {
+	if { [dict exists $fieldSet tzName] } {
+	    append procBody {
+		set timeZone [dict get $date tzName]
+	    }
+	}
+	append procBody {
+	    ::tcl::clock::SetupTimeZone $timeZone
+	}
+    }
+
+    # Add code that gets Julian Day Number from the fields.
+
+    append procBody [MakeParseCodeFromFields $fieldSet $DateParseActions]
+
+    # Get time of day
+
+    append procBody [MakeParseCodeFromFields $fieldSet $TimeParseActions]
+
+    # Assemble seconds, and convert local nominal time to UTC.
+
+    if { ![dict exists $fieldSet seconds] 
+         && ![dict exists $fieldSet starDate] } {
+	append procBody {
+	    if { [dict get $date julianDay] > 5373484 } {
+		return -code error -errorcode [list CLOCK dateTooLarge] \
+		    "requested date too large to represent"
+	    }
+	    dict set date localSeconds \
+		[expr { -210866803200
+			+ ( 86400 * wide([dict get $date julianDay]) )
+			+ [dict get $date secondOfDay] }]
+	}
+	append procBody {
+	    set date [::tcl::clock::ConvertLocalToUTC $date[set date {}] \
+			  $TZData($timeZone) \
+			  $changeover]
+	}
+    }
+
+    # Return result
+
+    append procBody {return [dict get $date seconds]} \n
+
+    proc $procName { string baseTime timeZone } $procBody
+
+    # puts [list proc $procName [list string baseTime timeZone] $procBody]
+
+    return $procName
+}
+	
+#----------------------------------------------------------------------
+#
+# LocaleNumeralMatcher --
+#
+#	Composes a regexp that captures the numerals in the given
+#	locale, and a dictionary to map them to conventional numerals.
+#
+# Parameters:
+#	locale - Name of the current locale
+#
+# Results:
+#	Returns a two-element list comprising the regexp and the
+#	dictionary.
+#
+# Side effects:
+#	Caches the result.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::LocaleNumeralMatcher {l} {
+
+    variable LocaleNumeralCache
+
+    if { ![dict exists $LocaleNumeralCache $l] } {
+	set d {}
+	set i 0
+	set sep \(
+	foreach n [mc LOCALE_NUMERALS] {
+	    dict set d $n $i
+	    regsub -all {[^[:alnum:]]} $n \\\\& subex
+	    append re $sep $subex
+	    set sep |
+	    incr i
+	}
+	append re \)
+	dict set LocaleNumeralCache $l [list $re $d]
+    }
+    return [dict get $LocaleNumeralCache $l]
+}
+	
+
+
+#----------------------------------------------------------------------
+#
+# UniquePrefixRegexp --
+#
+#	Composes a regexp that performs unique-prefix matching.  The
+#	RE matches one of a supplied set of strings, or any unique
+#	prefix thereof.
+#
+# Parameters:
+#	data - List of alternating match-strings and values.
+#	       Match-strings with distinct values are considered
+#	       distinct.
+#
+# Results:
+#	Returns a two-element list.  The first is a regexp that
+#	matches any unique prefix of any of the strings.  The second
+#	is a dictionary whose keys are match values from the regexp
+#	and whose values are the corresponding values from 'data'.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::UniquePrefixRegexp { data } {
+
+    # The 'successors' dictionary will contain, for each string that
+    # is a prefix of any key, all characters that may follow that
+    # prefix.  The 'prefixMapping' dictionary will have keys that
+    # are prefixes of keys and values that correspond to the keys.
+
+    set prefixMapping [dict create]
+    set successors [dict create {} {}]
+
+    # Walk the key-value pairs
+
+    foreach { key value } $data {
+
+	# Construct all prefixes of the key; 
+
+	set prefix {}
+	foreach char [split $key {}] {
+	    set oldPrefix $prefix
+	    dict set successors $oldPrefix $char {}
+	    append prefix $char
+
+	    # Put the prefixes in the 'prefixMapping' and 'successors'
+	    # dictionaries
+
+	    dict lappend prefixMapping $prefix $value
+	    if { ![dict exists $successors $prefix] } {
+		dict set successors $prefix {}
+	    }
+	}
+    }
+
+    # Identify those prefixes that designate unique values, and
+    # those that are the full keys
+
+    set uniquePrefixMapping {}
+    dict for { key valueList } $prefixMapping {
+	if { [llength $valueList] == 1 } {
+	    dict set uniquePrefixMapping $key [lindex $valueList 0]
+	}
+    }
+    foreach { key value } $data {
+	dict set uniquePrefixMapping $key $value
+    }
+
+    # Construct the re.
+
+    return [list \
+		[MakeUniquePrefixRegexp $successors $uniquePrefixMapping {}] \
+		$uniquePrefixMapping]
+}
+
+#----------------------------------------------------------------------
+#
+# MakeUniquePrefixRegexp --
+#
+#	Service procedure for 'UniquePrefixRegexp' that constructs
+#	a regular expresison that matches the unique prefixes.
+#
+# Parameters:
+#	successors - Dictionary whose keys are all prefixes
+#		     of keys passed to 'UniquePrefixRegexp' and whose
+#		     values are dictionaries whose keys are the characters
+#		     that may follow those prefixes.
+#	uniquePrefixMapping - Dictionary whose keys are the unique
+#			      prefixes and whose values are not examined.
+#	prefixString - Current prefix being processed.
+#
+# Results:
+#	Returns a constructed regular expression that matches the set
+#	of unique prefixes beginning with the 'prefixString'.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::MakeUniquePrefixRegexp { successors 
+					  uniquePrefixMapping
+					  prefixString } {
+
+    # Get the characters that may follow the current prefix string
+
+    set schars [lsort -ascii [dict keys [dict get $successors $prefixString]]]
+    if { [llength $schars] == 0 } {
+	return {}
+    }
+
+    # If there is more than one successor character, or if the current
+    # prefix is a unique prefix, surround the generated re with non-capturing
+    # parentheses.
+
+    set re {}
+    if { [dict exists $uniquePrefixMapping $prefixString]
+	 || [llength $schars] > 1 } {
+	append re "(?:"
+    }
+
+    # Generate a regexp that matches the successors.
+
+    set sep ""
+    foreach { c } $schars {
+	set nextPrefix $prefixString$c
+	regsub -all {[^[:alnum:]]} $c \\\\& rechar
+	append re $sep $rechar \
+	    [MakeUniquePrefixRegexp \
+		 $successors $uniquePrefixMapping $nextPrefix]
+	set sep |
+    }
+
+    # If the current prefix is a unique prefix, make all following text
+    # optional. Otherwise, if there is more than one successor character,
+    # close the non-capturing parentheses.
+
+    if { [dict exists $uniquePrefixMapping $prefixString] } {
+	append re ")?"
+    }  elseif { [llength $schars] > 1 } {
+	append re ")"
+    }
+
+    return $re
+}
+
+#----------------------------------------------------------------------
+#
+# MakeParseCodeFromFields --
+#
+#	Composes Tcl code to extract the Julian Day Number from a
+#	dictionary containing date fields.
+#
+# Parameters:
+#	dateFields -- Dictionary whose keys are fields of the date,
+#	              and whose values are the rightmost positions
+#		      at which those fields appear.
+#	parseActions -- List of triples: field set, priority, and
+#			code to emit.  Smaller priorities are better, and
+#			the list must be in ascending order by priority
+#
+# Results:
+#	Returns a burst of code that extracts the day number from the
+#	given date.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::MakeParseCodeFromFields { dateFields parseActions } {
+
+    set currPrio 999
+    set currFieldPos [list]
+    set currCodeBurst {
+	error "in ::tcl::clock::MakeParseCodeFromFields: can't happen"
+    }
+
+    foreach { fieldSet prio parseAction } $parseActions {
+
+	# If we've found an answer that's better than any that follow,
+	# quit now.
+
+	if { $prio > $currPrio } {
+	    break
+	}
+
+	# Accumulate the field positions that are used in the current
+	# field grouping.
+
+	set fieldPos [list]
+	set ok true
+	foreach field $fieldSet {
+	    if { ! [dict exists $dateFields $field] } {
+		set ok 0
+		break
+	    }
+	    lappend fieldPos [dict get $dateFields $field]
+	}
+
+	# Quit if we don't have a complete set of fields
+	if { !$ok } {
+	    continue
+	}
+
+	# Determine whether the current answer is better than the last.
+
+	set fPos [lsort -integer -decreasing $fieldPos]
+
+	if { $prio ==  $currPrio } {
+	    foreach currPos $currFieldPos newPos $fPos {
+		if { ![string is integer $newPos]
+		     || ![string is integer $currPos]
+		     || $newPos > $currPos } {
+		    break
+		}
+		if { $newPos < $currPos } {
+		    set ok 0
+		    break
+		}
+	    }
+	}
+	if { !$ok } {
+	    continue
+	}
+
+	# Remember the best possibility for extracting date information
+
+	set currPrio $prio
+	set currFieldPos $fPos
+	set currCodeBurst $parseAction
+	    
+    }
+
+    return $currCodeBurst
+
+}
+
+#----------------------------------------------------------------------
+#
+# EnterLocale --
+#
+#	Switch [mclocale] to a given locale if necessary
+#
+# Parameters:
+#	locale -- Desired locale
+#	oldLocaleVar -- Name of a variable in caller's scope that
+#		        tracks the previous locale name.
+#
+# Results:
+#	Returns the locale that was previously current.
+#
+# Side effects:
+#	Does [mclocale].  If necessary, uses [mcload] to load the
+#	designated locale's files, and tracks that it has done so
+#	in the 'McLoaded' variable.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::EnterLocale { locale oldLocaleVar } {
+
+    upvar 1 $oldLocaleVar oldLocale
+
+    variable MsgDir
+    variable McLoaded
+
+    set oldLocale [mclocale]
+    if { $locale eq {system} } {
+
+	if { $::tcl_platform(platform) ne {windows} } {
+
+	    # On a non-windows platform, the 'system' locale is
+	    # the same as the 'current' locale
+
+	    set locale current
+	} else {
+
+	    # On a windows platform, the 'system' locale is
+	    # adapted from the 'current' locale by applying the
+	    # date and time formats from the Control Panel.
+	    # First, load the 'current' locale if it's not yet loaded
+
+	    if {![dict exists $McLoaded $oldLocale] } {
+		mcload $MsgDir
+		dict set McLoaded $oldLocale {}
+	    }
+
+	    # Make a new locale string for the system locale, and
+	    # get the Control Panel information
+
+	    set locale ${oldLocale}_windows
+	    if { ![dict exists $McLoaded $locale] } {
+		LoadWindowsDateTimeFormats $locale
+		dict set McLoaded $locale {}
+	    }
+	}
+    }
+    if { $locale eq {current}} {
+	set locale $oldLocale
+	unset oldLocale
+    } elseif { $locale eq $oldLocale } {
+	unset oldLocale
+    } else {
+	mclocale $locale
+    }
+    if { ![dict exists $McLoaded $locale] } {
+	mcload $MsgDir
+	dict set McLoaded $locale {}
+    }
+
+}    
+
+#----------------------------------------------------------------------
+#
+# LoadWindowsDateTimeFormats --
+#
+#	Load the date/time formats from the Control Panel in Windows
+#	and convert them so that they're usable by Tcl.
+#
+# Parameters:
+#	locale - Name of the locale in whose message catalog
+#	         the converted formats are to be stored.
+#
+# Results:
+#	None.
+#
+# Side effects:
+#	Updates the given message catalog with the locale strings.
+#
+# Presumes that on entry, [mclocale] is set to the current locale,
+# so that default strings can be obtained if the Registry query
+# fails.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::LoadWindowsDateTimeFormats { locale } {
+
+    # Bail out if we can't find the Registry
+
+    variable NoRegistry
+    if { [info exists NoRegistry] } return
+
+    if { ![catch {
+	registry get "HKEY_CURRENT_USER\\Control Panel\\International" \
+	    sShortDate
+    } string] } {
+	set quote {}
+	set datefmt {}
+	foreach { unquoted quoted } [split $string '] {
+	    append datefmt $quote [string map {
+		dddd %A
+		ddd  %a
+		dd   %d
+		d    %e
+		MMMM %B
+		MMM  %b
+		MM   %m
+		M    %N
+		yyyy %Y
+		yy   %y
+                y    %y
+                gg   {}
+	    } $unquoted]
+	    if { $quoted eq {} } {
+		set quote '
+	    } else {
+		set quote $quoted
+	    }
+	}
+	::msgcat::mcset $locale DATE_FORMAT $datefmt
+    }
+
+    if { ![catch {
+	registry get "HKEY_CURRENT_USER\\Control Panel\\International" \
+	    sLongDate
+    } string] } {
+	set quote {}
+	set ldatefmt {}
+	foreach { unquoted quoted } [split $string '] {
+	    append ldatefmt $quote [string map {
+		dddd %A
+		ddd  %a
+		dd   %d
+		d    %e
+		MMMM %B
+		MMM  %b
+		MM   %m
+		M    %N
+		yyyy %Y
+		yy   %y
+                y    %y
+                gg   {}
+	    } $unquoted]
+	    if { $quoted eq {} } {
+		set quote '
+	    } else {
+		set quote $quoted
+	    }
+	}
+	::msgcat::mcset $locale LOCALE_DATE_FORMAT $ldatefmt
+    }
+
+    if { ![catch {
+	registry get "HKEY_CURRENT_USER\\Control Panel\\International" \
+	    sTimeFormat
+    } string] } {
+	set quote {}
+	set timefmt {}
+	foreach { unquoted quoted } [split $string '] {
+	    append timefmt $quote [string map {
+		HH    %H
+		H     %k
+		hh    %I
+		h     %l
+		mm    %M
+		m     %M
+		ss    %S
+		s     %S
+		tt    %p
+		t     %p
+	    } $unquoted]
+	    if { $quoted eq {} } {
+		set quote '
+	    } else {
+		set quote $quoted
+	    }
+	}
+	::msgcat::mcset $locale TIME_FORMAT $timefmt
+    }
+
+    catch {
+	::msgcat::mcset $locale DATE_TIME_FORMAT "$datefmt $timefmt"
+    }
+    catch {
+	::msgcat::mcset $locale LOCALE_DATE_TIME_FORMAT "$ldatefmt $timefmt"
+    }
+
+    return
+
+}
+
+#----------------------------------------------------------------------
+#
+# LocalizeFormat --
+#
+#	Map away locale-dependent format groups in a clock format.
+#
+# Parameters:
+#	locale -- Current [mclocale] locale, supplied to avoid
+#		  an extra call
+#	format -- Format supplied to [clock scan] or [clock format]
+#
+# Results:
+#	Returns the string with locale-dependent composite format
+#	groups substituted out.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::LocalizeFormat { locale format } {
+
+    variable McLoaded
+
+    if { [dict exists $McLoaded $locale FORMAT $format] } {
+	return [dict get $McLoaded $locale FORMAT $format]
+    }
+    set inFormat $format
+
+    # Handle locale-dependent format groups by mapping them out of the format
+    # string.  Note that the order of the [string map] operations is
+    # significant because later formats can refer to later ones; for example
+    # %c can refer to %X, which in turn can refer to %T.
+    
+    set list {
+	%% %%
+	%D %m/%d/%Y
+	%+ {%a %b %e %H:%M:%S %Z %Y}
+    }
+    lappend list %EY [string map $list [mc LOCALE_YEAR_FORMAT]]
+    lappend list %T  [string map $list [mc TIME_FORMAT_24_SECS]]
+    lappend list %R  [string map $list [mc TIME_FORMAT_24]]
+    lappend list %r  [string map $list [mc TIME_FORMAT_12]]
+    lappend list %X  [string map $list [mc TIME_FORMAT]]
+    lappend list %EX [string map $list [mc LOCALE_TIME_FORMAT]]
+    lappend list %x  [string map $list [mc DATE_FORMAT]]
+    lappend list %Ex [string map $list [mc LOCALE_DATE_FORMAT]]
+    lappend list %c  [string map $list [mc DATE_TIME_FORMAT]]
+    lappend list %Ec [string map $list [mc LOCALE_DATE_TIME_FORMAT]]
+    set format [string map $list $format]
+				       
+    dict set McLoaded $locale FORMAT $inFormat $format
+    return $format
+}
+
+#----------------------------------------------------------------------
+#
+# FormatNumericTimeZone --
+#
+#	Formats a time zone as +hhmmss
+#
+# Parameters:
+#	z - Time zone in seconds east of Greenwich
+#
+# Results:
+#	Returns the time zone formatted in a numeric form
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::FormatNumericTimeZone { z } {
+
+    if { $z < 0 } {
+	set z [expr { - $z }]
+	set retval -
+    } else {
+	set retval +
+    }
+    append retval [::format %02d [expr { $z / 3600 }]]
+    set z [expr { $z % 3600 }]
+    append retval [::format %02d [expr { $z / 60 }]]
+    set z [expr { $z % 60 }]
+    if { $z != 0 } {
+	append retval [::format %02d $z]
+    }
+    return $retval
+
+}
+
+#----------------------------------------------------------------------
+#
+# FormatStarDate --
+#
+#	Formats a date as a StarDate.
+#
+# Parameters:
+#	date - Dictionary containing 'year', 'dayOfYear', and
+#	       'localSeconds' fields.
+#
+# Results:
+#	Returns the given date formatted as a StarDate.
+#
+# Side effects:
+#	None.
+#
+# Jeff Hobbs put this in to support an atrocious pun about Tcl being
+# "Enterprise ready."  Now we're stuck with it.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::FormatStarDate { date } {
+
+    variable Roddenberry
+
+    # Get day of year, zero based
+
+    set doy [expr { [dict get $date dayOfYear] - 1 }]
+
+    # Determine whether the year is a leap year
+
+    set lp [IsGregorianLeapYear $date]
+
+    # Convert day of year to a fractional year
+
+    if { $lp } {
+	set fractYear [expr { 1000 * $doy / 366 }]
+    } else {
+	set fractYear [expr { 1000 * $doy / 365 }]
+    }
+
+    # Put together the StarDate
+
+    return [::format "Stardate %02d%03d.%1d" \
+		[expr { [dict get $date year] - $Roddenberry }] \
+		$fractYear \
+		[expr { [dict get $date localSeconds] % 86400
+			/ ( 86400 / 10 ) }]]
+}
+
+#----------------------------------------------------------------------
+#
+# ParseStarDate --
+#
+#	Parses a StarDate
+#
+# Parameters:
+#	year - Year from the Roddenberry epoch
+#	fractYear - Fraction of a year specifiying the day of year.
+#	fractDay - Fraction of a day
+#
+# Results:
+#	Returns a count of seconds from the Posix epoch.
+#
+# Side effects:
+#	None.
+#
+# Jeff Hobbs put this in to support an atrocious pun about Tcl being
+# "Enterprise ready."  Now we're stuck with it.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ParseStarDate { year fractYear fractDay } {
+
+    variable Roddenberry
+
+    # Build a tentative date from year and fraction.
+
+    set date [dict create \
+		  gregorian 1 \
+		  era CE \
+		  year [expr { $year + $Roddenberry }] \
+		  dayOfYear [expr { $fractYear * 365 / 1000 + 1 }]]
+    set date [GetJulianDayFromGregorianEraYearDay $date[set date {}]]
+
+    # Determine whether the given year is a leap year
+
+    set lp [IsGregorianLeapYear $date]
+
+    # Reconvert the fractional year according to whether the given
+    # year is a leap year
+
+    if { $lp } {
+	dict set date dayOfYear \
+	    [expr { $fractYear * 366 / 1000 + 1 }]
+    } else {
+	dict set date dayOfYear \
+	    [expr { $fractYear * 365 / 1000 + 1 }]
+    }
+    dict unset date julianDay
+    dict unset date gregorian
+    set date [GetJulianDayFromGregorianEraYearDay $date[set date {}]]
+
+    return [expr { 86400 * [dict get $date julianDay]
+		   - 210866803200
+		   + ( 86400 / 10 ) * $fractDay }]
+
+}
+
+#----------------------------------------------------------------------
+#
+# ScanWide --
+#
+#	Scans a wide integer from an input
+#
+# Parameters:
+#	str - String containing a decimal wide integer
+#
+# Results:
+#	Returns the string as a pure wide integer.  Throws an error if
+#	the string is misformatted or out of range.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ScanWide { str } {
+    set count [::scan $str {%ld %c} result junk]
+    if { $count != 1 } {
+	return -code error -errorcode [list CLOCK notAnInteger $str] \
+	    "\"$str\" is not an integer"
+    }
+    if { [incr result 0] != $str } {
+	return -code error -errorcode [list CLOCK integervalueTooLarge] \
+	    "integer value too large to represent"
+    }
+    return $result
+}
+
+#----------------------------------------------------------------------
+#
+# InterpretTwoDigitYear --
+#
+#	Given a date that contains only the year of the century,
+#	determines the target value of a two-digit year.
+#
+# Parameters:
+#	date - Dictionary containing fields of the date.
+#	baseTime - Base time relative to which the date is expressed.
+#	twoDigitField - Name of the field that stores the two-digit year.
+#			Default is 'yearOfCentury'
+#	fourDigitField - Name of the field that will receive the four-digit
+#	                 year.  Default is 'year'
+#
+# Results:
+#	Returns the dictionary augmented with the four-digit year, stored in
+#	the given key.
+#
+# Side effects:
+#	None.
+#
+# The current rule for interpreting a two-digit year is that the year
+# shall be between 1937 and 2037, thus staying within the range of a
+# 32-bit signed value for time.  This rule may change to a sliding
+# window in future versions, so the 'baseTime' parameter (which is
+# currently ignored) is provided in the procedure signature.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::InterpretTwoDigitYear { date baseTime 
+					   { twoDigitField yearOfCentury }
+					   { fourDigitField year } } {
+
+    set yr [dict get $date $twoDigitField]
+    if { $yr <= 37 } {
+	dict set date $fourDigitField [expr { $yr + 2000 }]
+    } else {
+	dict set date $fourDigitField [expr { $yr + 1900 }]
+    }
+    return $date
+
+}
+
+#----------------------------------------------------------------------
+#
+# AssignBaseYear --
+#
+#	Places the number of the current year into a dictionary.
+#
+# Parameters:
+#	date - Dictionary value to update
+#	baseTime - Base time from which to extract the year, expressed
+#		   in seconds from the Posix epoch
+#	timezone - the time zone in which the date is being scanned
+#	changeover - the Julian Day on which the Gregorian calendar
+#		     was adopted in the target locale.
+#
+# Results:
+#	Returns the dictionary with the current year assigned.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AssignBaseYear { date baseTime timezone changeover } {
+
+    variable TZData
+
+    # Find the Julian Day Number corresponding to the base time, and
+    # find the Gregorian year corresponding to that Julian Day.
+
+    set date2 [GetDateFields $baseTime $TZData($timezone) $changeover]
+
+    # Store the converted year
+
+    dict set date era [dict get $date2 era]
+    dict set date year [dict get $date2 year]
+
+    return $date
+
+}
+
+#----------------------------------------------------------------------
+#
+# AssignBaseIso8601Year --
+#
+#	Determines the base year in the ISO8601 fiscal calendar.
+#
+# Parameters:
+#	date - Dictionary containing the fields of the date that
+#	       is to be augmented with the base year.
+#	baseTime - Base time expressed in seconds from the Posix epoch.
+#	timeZone - Target time zone
+#	changeover - Julian Day of adoption of the Gregorian calendar in
+#		     the target locale.
+#
+# Results:
+#	Returns the given date with "iso8601Year" set to the
+#	base year.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AssignBaseIso8601Year {date baseTime timeZone changeover} {
+
+    variable TZData
+
+    # Find the Julian Day Number corresponding to the base time
+
+    set date2 [GetDateFields $baseTime $TZData($timeZone) $changeover]
+
+    # Calculate the ISO8601 date and transfer the year
+
+    dict set date era CE
+    dict set date iso8601Year [dict get $date2 iso8601Year]
+    return $date
+}
+
+#----------------------------------------------------------------------
+#
+# AssignBaseMonth --
+#
+#	Places the number of the current year and month into a 
+#	dictionary.
+#
+# Parameters:
+#	date - Dictionary value to update
+#	baseTime - Time from which the year and month are to be
+#	           obtained, expressed in seconds from the Posix epoch.
+#	timezone - Name of the desired time zone
+#	changeover - Julian Day on which the Gregorian calendar was adopted.
+#
+# Results:
+#	Returns the dictionary with the base year and month assigned.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AssignBaseMonth {date baseTime timezone changeover} {
+
+    variable TZData
+
+    # Find the year and month corresponding to the base time
+
+    set date2 [GetDateFields $baseTime $TZData($timezone) $changeover]
+    dict set date era [dict get $date2 era]
+    dict set date year [dict get $date2 year]
+    dict set date month [dict get $date2 month]
+    return $date
+
+}
+
+#----------------------------------------------------------------------
+#
+# AssignBaseWeek --
+#
+#	Determines the base year and week in the ISO8601 fiscal calendar.
+#
+# Parameters:
+#	date - Dictionary containing the fields of the date that
+#	       is to be augmented with the base year and week.
+#	baseTime - Base time expressed in seconds from the Posix epoch.
+#	changeover - Julian Day on which the Gregorian calendar was adopted
+#		     in the target locale.
+#
+# Results:
+#	Returns the given date with "iso8601Year" set to the
+#	base year and "iso8601Week" to the week number.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AssignBaseWeek {date baseTime timeZone changeover} {
+
+    variable TZData
+
+    # Find the Julian Day Number corresponding to the base time
+
+    set date2 [GetDateFields $baseTime $TZData($timeZone) $changeover]
+
+    # Calculate the ISO8601 date and transfer the year
+
+    dict set date era CE
+    dict set date iso8601Year [dict get $date2 iso8601Year]
+    dict set date iso8601Week [dict get $date2 iso8601Week]
+    return $date
+}
+
+#----------------------------------------------------------------------
+#
+# AssignBaseJulianDay --
+#
+#	Determines the base day for a time-of-day conversion.
+#
+# Parameters:
+#	date - Dictionary that is to get the base day
+#	baseTime - Base time expressed in seconds from the Posix epoch
+#	changeover - Julian day on which the Gregorian calendar was
+#		     adpoted in the target locale.
+#
+# Results:
+#	Returns the given dictionary augmented with a 'julianDay' field
+#	that contains the base day.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AssignBaseJulianDay { date baseTime timeZone changeover } {
+
+    variable TZData
+
+    # Find the Julian Day Number corresponding to the base time
+
+    set date2 [GetDateFields $baseTime $TZData($timeZone) $changeover]
+    dict set date julianDay [dict get $date2 julianDay]
+
+    return $date
+}
+
+#----------------------------------------------------------------------
+#
+# InterpretHMSP --
+#
+#	Interprets a time in the form "hh:mm:ss am".
+#
+# Parameters:
+#	date -- Dictionary containing "hourAMPM", "minute", "second"
+#	        and "amPmIndicator" fields.
+#
+# Results:
+#	Returns the number of seconds from local midnight.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::InterpretHMSP { date } {
+
+    set hr [dict get $date hourAMPM]
+    if { $hr == 12 } {
+	set hr 0
+    }
+    if { [dict get $date amPmIndicator] } {
+	incr hr 12
+    }
+    dict set date hour $hr
+    return [InterpretHMS $date[set date {}]]
+
+}
+
+#----------------------------------------------------------------------
+#
+# InterpretHMS --
+#
+#	Interprets a 24-hour time "hh:mm:ss"
+#
+# Parameters:
+#	date -- Dictionary containing the "hour", "minute" and "second"
+#	        fields.
+#
+# Results:
+#	Returns the given dictionary augmented with a "secondOfDay"
+#	field containing the number of seconds from local midnight.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::InterpretHMS { date } {
+
+    return [expr { ( [dict get $date hour] * 60
+		     + [dict get $date minute] ) * 60
+		   + [dict get $date second] }]
+
+}
+
+#----------------------------------------------------------------------
+#
+# GetSystemTimeZone --
+#
+#	Determines the system time zone, which is the default for the
+#	'clock' command if no other zone is supplied.
+#
+# Parameters:
+#	None.
+#
+# Results:
+#	Returns the system time zone.
+#
+# Side effects:
+#	Stores the sustem time zone in the 'CachedSystemTimeZone'
+#	variable, since determining it may be an expensive process.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::GetSystemTimeZone {} {
+
+    variable CachedSystemTimeZone
+    variable TimeZoneBad
+
+    if {[set result [getenv TCL_TZ]] ne {}} {
+	set timezone $result
+    } elseif {[set result [getenv TZ]] ne {}} {
+	set timezone $result
+    }
+    if {![info exists timezone]} {
+        # Cache the time zone only if it was detected by one of the
+        # expensive methods.
+        if { [info exists CachedSystemTimeZone] } {
+            set timezone $CachedSystemTimeZone
+        } elseif { $::tcl_platform(platform) eq {windows} } {
+            set timezone [GuessWindowsTimeZone]
+        } elseif { [file exists /etc/localtime]
+                   && ![catch {ReadZoneinfoFile \
+                                   Tcl/Localtime /etc/localtime}] } {
+            set timezone :Tcl/Localtime
+        } else {
+            set timezone :localtime
+        }
+	set CachedSystemTimeZone $timezone
+    }
+    if { ![dict exists $TimeZoneBad $timezone] } {
+	dict set TimeZoneBad $timezone [catch {SetupTimeZone $timezone}]
+    }
+    if { [dict get $TimeZoneBad $timezone] } {
+	return :localtime
+    } else {
+	return $timezone
+    }
+
+}
+
+#----------------------------------------------------------------------
+#
+# ConvertLegacyTimeZone --
+#
+#	Given an alphanumeric time zone identifier and the system
+#	time zone, convert the alphanumeric identifier to an
+#	unambiguous time zone.
+#
+# Parameters:
+#	tzname - Name of the time zone to convert
+#
+# Results:
+#	Returns a time zone name corresponding to tzname, but
+#	in an unambiguous form, generally +hhmm.
+#
+# This procedure is implemented primarily to allow the parsing of
+# RFC822 date/time strings.  Processing a time zone name on input
+# is not recommended practice, because there is considerable room
+# for ambiguity; for instance, is BST Brazilian Standard Time, or
+# British Summer Time?
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ConvertLegacyTimeZone { tzname } {
+
+    variable LegacyTimeZone
+
+    set tzname [string tolower $tzname]
+    if { ![dict exists $LegacyTimeZone $tzname] } {
+	return -code error -errorcode [list CLOCK badTZName $tzname] \
+	    "time zone \"$tzname\" not found"
+    } else {
+	return [dict get $LegacyTimeZone $tzname]
+    }
+
+}
+
+#----------------------------------------------------------------------
+#
+# SetupTimeZone --
+#
+#	Given the name or specification of a time zone, sets up
+#	its in-memory data.
+#
+# Parameters:
+#	tzname - Name of a time zone
+#
+# Results:
+#	Unless the time zone is ':localtime', sets the TZData array
+#	to contain the lookup table for local<->UTC conversion.
+#	Returns an error if the time zone cannot be parsed.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::SetupTimeZone { timezone } {
+
+    variable TZData
+
+    if {! [info exists TZData($timezone)] } {
+	variable MINWIDE
+	if { $timezone eq {:localtime} } {
+
+	    # Nothing to do, we'll convert using the localtime function
+
+	} elseif { [regexp {^([-+])(\d\d)(?::?(\d\d)(?::?(\d\d))?)?} $timezone \
+		    -> s hh mm ss] } {
+
+	    # Make a fixed offset
+
+	    ::scan $hh %d hh
+	    if { $mm eq {} } {
+		set mm 0
+	    } else {
+		::scan $mm %d mm
+	    }
+	    if { $ss eq {} } {
+		set ss 0
+	    } else {
+		::scan $ss %d ss
+	    }
+	    set offset [expr { ( $hh * 60 + $mm ) * 60 + $ss }]
+	    if { $s eq {-} } {
+		set offset [expr { - $offset }]
+	    }
+	    set TZData($timezone) [list [list $MINWIDE $offset -1 $timezone]]
+
+	} elseif { [string index $timezone 0] eq {:} } {
+	    
+	    # Convert using a time zone file
+
+	    if { 
+		[catch {
+		    LoadTimeZoneFile [string range $timezone 1 end]
+		}]
+		&& [catch {
+		    LoadZoneinfoFile [string range $timezone 1 end]
+		}]
+	    } {
+		return -code error \
+		    -errorcode [list CLOCK badTimeZone $timezone] \
+		    "time zone \"$timezone\" not found"
+	    }
+	    
+	} elseif { ![catch {ParsePosixTimeZone $timezone} tzfields] } {
+	    
+	    # This looks like a POSIX time zone - try to process it
+
+	    if { [catch {ProcessPosixTimeZone $tzfields} data opts] } {
+		if { [lindex [dict get $opts -errorcode] 0] eq {CLOCK} } {
+		    dict unset opts -errorinfo
+		}
+		return -options $opts $data
+	    } else {
+		set TZData($timezone) $data
+	    }
+
+	} else {
+
+	    # We couldn't parse this as a POSIX time zone.  Try
+	    # again with a time zone file - this time without a colon
+
+	    if { [catch { LoadTimeZoneFile $timezone }]
+		 && [catch { LoadZoneinfoFile $timezone } - opts] } {
+		dict unset opts -errorinfo
+		return -options $opts "time zone $timezone not found"
+	    }
+	    set TZData($timezone) $TZData(:$timezone)
+	}
+    }
+
+    return
+}
+
+#----------------------------------------------------------------------
+#
+# GuessWindowsTimeZone --
+#
+#	Determines the system time zone on windows.
+#
+# Parameters:
+#	None.
+#
+# Results:
+#	Returns a time zone specifier that corresponds to the system
+#	time zone information found in the Registry.
+#
+# Bugs:
+#	Fixed dates for DST change are unimplemented at present, because
+#	no time zone information supplied with Windows actually uses
+#	them!
+#
+# On a Windows system where neither $env(TCL_TZ) nor $env(TZ) is 
+# specified, GuessWindowsTimeZone looks in the Registry for the
+# system time zone information.  It then attempts to find an entry
+# in WinZoneInfo for a time zone that uses the same rules.  If
+# it finds one, it returns it; otherwise, it constructs a Posix-style
+# time zone string and returns that.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::GuessWindowsTimeZone {} {
+
+    variable WinZoneInfo
+    variable NoRegistry
+    variable TimeZoneBad
+
+    if { [info exists NoRegistry] } {
+	return :localtime
+    }
+
+    # Dredge time zone information out of the registry
+
+    if { [catch {
+	set rpath HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Control\\TimeZoneInformation
+	set data [list \
+		      [expr { -60
+			      * [registry get $rpath Bias] }] \
+		      [expr { -60
+				  * [registry get $rpath StandardBias] }] \
+		      [expr { -60 \
+				  * [registry get $rpath DaylightBias] }]]
+	set stdtzi [registry get $rpath StandardStart]
+	foreach ind {0 2 14 4 6 8 10 12} {
+	    binary scan $stdtzi @${ind}s val
+	    lappend data $val
+	}
+	set daytzi [registry get $rpath DaylightStart]
+	foreach ind {0 2 14 4 6 8 10 12} {
+	    binary scan $daytzi @${ind}s val
+	    lappend data $val
+	}
+    }] } {
+
+	# Missing values in the Registry - bail out
+
+	return :localtime
+    }
+
+    # Make up a Posix time zone specifier if we can't find one.
+    # Check here that the tzdata file exists, in case we're running
+    # in an environment (e.g. starpack) where tzdata is incomplete.
+    # (Bug 1237907)
+
+    if { [dict exists $WinZoneInfo $data] } {
+	set tzname [dict get $WinZoneInfo $data]
+	if { ! [dict exists $TimeZoneBad $tzname] } {
+	    dict set TimeZoneBad $tzname [catch {SetupTimeZone $tzname}]
+	}
+    } else {
+	set tzname {}
+    }
+    if { $tzname eq {} || [dict get $TimeZoneBad $tzname] } {
+	lassign $data \
+	    bias stdBias dstBias \
+	    stdYear stdMonth stdDayOfWeek stdDayOfMonth \
+	    stdHour stdMinute stdSecond stdMillisec \
+	    dstYear dstMonth dstDayOfWeek dstDayOfMonth \
+	    dstHour dstMinute dstSecond dstMillisec
+	set stdDelta [expr { $bias + $stdBias }]
+	set dstDelta [expr { $bias + $dstBias }]
+	if { $stdDelta <= 0 } {
+	    set stdSignum +
+	    set stdDelta [expr { - $stdDelta }]
+	    set dispStdSignum -
+	} else {
+	    set stdSignum -
+	    set dispStdSignum +
+	}
+	set hh [::format %02d [expr { $stdDelta / 3600 }]]
+	set mm [::format %02d [expr { ($stdDelta / 60 ) % 60 }]]
+	set ss [::format %02d [expr { $stdDelta % 60 }]]
+	set tzname {}
+	append tzname < $dispStdSignum $hh $mm > $stdSignum $hh : $mm : $ss
+	if { $stdMonth >= 0 } {
+	    if { $dstDelta <= 0 } {
+		set dstSignum +
+		set dstDelta [expr { - $dstDelta }]
+		set dispDstSignum -
+	    } else {
+		set dstSignum -
+		set dispDstSignum +
+	    }
+	    set hh [::format %02d [expr { $dstDelta / 3600 }]]
+	    set mm [::format %02d [expr { ($dstDelta / 60 ) % 60 }]]
+	    set ss [::format %02d [expr { $dstDelta % 60 }]]
+	    append tzname < $dispDstSignum $hh $mm > $dstSignum $hh : $mm : $ss
+	    if { $dstYear == 0 } {
+		append tzname ,M $dstMonth . $dstDayOfMonth . $dstDayOfWeek
+	    } else {
+		# I have not been able to find any locale on which
+		# Windows converts time zone on a fixed day of the year,
+		# hence don't know how to interpret the fields.
+		# If someone can inform me, I'd be glad to code it up.
+		# For right now, we bail out in such a case.
+		return :localtime
+	    }
+	    append tzname / [::format %02d $dstHour] \
+		: [::format %02d $dstMinute] \
+		: [::format %02d $dstSecond]
+	    if { $stdYear == 0 } {
+		append tzname ,M $stdMonth . $stdDayOfMonth . $stdDayOfWeek
+	    } else {
+		# I have not been able to find any locale on which
+		# Windows converts time zone on a fixed day of the year,
+		# hence don't know how to interpret the fields.
+		# If someone can inform me, I'd be glad to code it up.
+		# For right now, we bail out in such a case.
+		return :localtime
+	    }
+	    append tzname / [::format %02d $stdHour] \
+		: [::format %02d $stdMinute] \
+		: [::format %02d $stdSecond]
+	}
+	dict set WinZoneInfo $data $tzname
+    } 
+
+    return [dict get $WinZoneInfo $data]
+
+}
+
+#----------------------------------------------------------------------
+#
+# LoadTimeZoneFile --
+#
+#	Load the data file that specifies the conversion between a
+#	given time zone and Greenwich.
+#
+# Parameters:
+#	fileName -- Name of the file to load
+#
+# Results:
+#	None.
+#
+# Side effects:
+#	TZData(:fileName) contains the time zone data
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::LoadTimeZoneFile { fileName } {
+    variable DataDir
+    variable TZData
+
+    if { [info exists TZData($fileName)] } {
+	return
+    }
+
+    # Since an unsafe interp uses the [clock] command in the master,
+    # this code is security sensitive.  Make sure that the path name
+    # cannot escape the given directory.
+
+    if { ![regexp {^[[.-.][:alpha:]_]+(?:/[[.-.][:alpha:]_]+)*$} $fileName] } {
+	return -code error \
+	    -errorcode [list CLOCK badTimeZone $:fileName] \
+	    "time zone \":$fileName\" not valid"
+    }
+    if { [catch {
+	source -encoding utf-8 [file join $DataDir $fileName]
+    }] } {
+	return -code error \
+	    -errorcode [list CLOCK badTimeZone :$fileName] \
+	    "time zone \":$fileName\" not found"
+    }
+    return
+}
+
+#----------------------------------------------------------------------
+#
+# LoadZoneinfoFile --
+#
+#	Loads a binary time zone information file in Olson format.
+#
+# Parameters:
+#	fileName - Relative path name of the file to load.
+#
+# Results:
+#	Returns an empty result normally; returns an error if no
+#	Olson file was found or the file was malformed in some way.
+#
+# Side effects:
+#	TZData(:fileName) contains the time zone data
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::LoadZoneinfoFile { fileName } {
+
+    variable ZoneinfoPaths
+
+    # Since an unsafe interp uses the [clock] command in the master,
+    # this code is security sensitive.  Make sure that the path name
+    # cannot escape the given directory.
+
+    if { ![regexp {^[[.-.][:alpha:]_]+(?:/[[.-.][:alpha:]_]+)*$} $fileName] } {
+	return -code error \
+	    -errorcode [list CLOCK badTimeZone $:fileName] \
+	    "time zone \":$fileName\" not valid"
+    }
+    foreach d $ZoneinfoPaths {
+	set fname [file join $d $fileName]
+	if { [file readable $fname] && [file isfile $fname] } {
+	    break
+	}
+	unset fname
+    }
+    ReadZoneinfoFile $fileName $fname
+}
+
+#----------------------------------------------------------------------
+#
+# ReadZoneinfoFile --
+#
+#	Loads a binary time zone information file in Olson format.
+#
+# Parameters:
+#	fileName - Name of the time zone (relative path name of the
+#		   file).
+#	fname - Absolute path name of the file.
+#
+# Results:
+#	Returns an empty result normally; returns an error if no
+#	Olson file was found or the file was malformed in some way.
+#
+# Side effects:
+#	TZData(:fileName) contains the time zone data
+#
+#----------------------------------------------------------------------
+
+
+proc ::tcl::clock::ReadZoneinfoFile {fileName fname} {
+    variable MINWIDE
+    variable TZData
+    if { ![file exists $fname] } {
+	return -code error "$fileName not found"
+    }
+
+    if { [file size $fname] > 262144 } {
+	return -code error "$fileName too big"
+    }
+
+    # Suck in all the data from the file
+
+    set f [open $fname r]
+    fconfigure $f -translation binary
+    set d [read $f]
+    close $f
+
+    # The file begins with a magic number, sixteen reserved bytes,
+    # and then six 4-byte integers giving counts of fileds in the file.
+
+    binary scan $d a4a1x15IIIIII \
+	magic version nIsGMT nIsStd nLeap nTime nType nChar
+    set seek 44
+    set ilen 4
+    set iformat I
+    if { $magic != {TZif} } {
+	return -code error "$fileName not a time zone information file"
+    }
+    if { $nType > 255 } {
+	return -code error "$fileName contains too many time types"
+    }
+    # Accept only Posix-style zoneinfo.  Sorry, 'leaps' bigots.
+    if { $nLeap != 0 } {
+	return -code error "$fileName contains leap seconds"
+    }
+
+    # In a version 2 file, we use the second part of the file, which
+    # contains 64-bit transition times.
+
+    if {$version eq "2"} {
+	set seek [expr {44
+			+ 5 * $nTime 
+			+ 6 * $nType 
+			+ 4 * $nLeap
+			+ $nIsStd 
+			+ $nIsGMT
+			+ $nChar
+		    }]
+	binary scan $d @${seek}a4a1x15IIIIII \
+	    magic version nIsGMT nIsStd nLeap nTime nType nChar
+	if {$magic ne {TZif}} {
+	    return -code error "seek address $seek miscomputed, magic = $magic"
+	}
+	set iformat W
+	set ilen 8
+	incr seek 44
+    }
+
+    # Next come ${nTime} transition times, followed by ${nTime} time type
+    # codes.  The type codes are unsigned 1-byte quantities.  We insert an
+    # arbitrary start time in front of the transitions.
+
+    binary scan $d @${seek}${iformat}${nTime}c${nTime} times tempCodes
+    incr seek [expr { ($ilen + 1) * $nTime }]
+    set times [linsert $times 0 $MINWIDE]
+    set codes {}
+    foreach c $tempCodes {
+	lappend codes [expr { $c & 0xff }]
+    }
+    set codes [linsert $codes 0 0]
+
+    # Next come ${nType} time type descriptions, each of which has an
+    # offset (seconds east of GMT), a DST indicator, and an index into
+    # the abbreviation text.
+
+    for { set i 0 } { $i < $nType } { incr i } {
+	binary scan $d @${seek}Icc gmtOff isDst abbrInd
+	lappend types [list $gmtOff $isDst $abbrInd]
+	incr seek 6
+    }
+
+    # Next come $nChar characters of time zone name abbreviations,
+    # which are null-terminated.
+    # We build them up into a dictionary indexed by character index,
+    # because that's what's in the indices above.
+
+    binary scan $d @${seek}a${nChar} abbrs
+    incr seek ${nChar}
+    set abbrList [split $abbrs \0]
+    set i 0
+    set abbrevs {}
+    foreach a $abbrList {
+	for {set j 0} {$j <= [string length $a]} {incr j} {
+	    dict set abbrevs $i [string range $a $j end]
+	    incr i
+	}
+    }
+
+    # Package up a list of tuples, each of which contains transition time,
+    # seconds east of Greenwich, DST flag and time zone abbreviation.
+
+    set r {}
+    set lastTime $MINWIDE
+    foreach t $times c $codes {
+	if { $t < $lastTime } {
+	    return -code error "$fileName has times out of order"
+	}
+	set lastTime $t
+	lassign [lindex $types $c] gmtoff isDst abbrInd
+	set abbrev [dict get $abbrevs $abbrInd]
+	lappend r [list $t $gmtoff $isDst $abbrev]
+    }
+
+    # In a version 2 file, there is also a POSIX-style time zone description
+    # at the very end of the file.  To get to it, skip over
+    # nLeap leap second values (8 bytes each),
+    # nIsStd standard/DST indicators and nIsGMT UTC/local indicators.
+
+    if {$version eq {2}} {
+	set seek [expr {$seek + 8 * $nLeap + $nIsStd + $nIsGMT + 1}]
+	set last [string first \n $d $seek]
+	set posix [string range $d $seek [expr {$last-1}]]
+	if {[llength $posix] > 0} {
+	    set posixFields [ParsePosixTimeZone $posix]
+	    foreach tuple [ProcessPosixTimeZone $posixFields] {
+		lassign $tuple t gmtoff isDst abbrev
+		if {$t > $lastTime} {
+		    lappend r $tuple
+		}
+	    }
+	}
+    }
+
+    set TZData(:$fileName) $r
+
+    return
+}
+
+#----------------------------------------------------------------------
+#
+# ParsePosixTimeZone --
+#
+#	Parses the TZ environment variable in Posix form
+#
+# Parameters:
+#	tz	Time zone specifier to be interpreted
+#
+# Results:
+#	Returns a dictionary whose values contain the various pieces of
+#	the time zone specification.
+#
+# Side effects:
+#	None.
+#
+# Errors:
+#	Throws an error if the syntax of the time zone is incorrect.
+#
+# The following keys are present in the dictionary:
+#	stdName - Name of the time zone when Daylight Saving Time
+#		  is not in effect.
+#	stdSignum - Sign (+, -, or empty) of the offset from Greenwich 
+#		    to the given (non-DST) time zone.  + and the empty
+#		    string denote zones west of Greenwich, - denotes east
+#		    of Greenwich; this is contrary to the ISO convention
+#		    but follows Posix.
+#	stdHours - Hours part of the offset from Greenwich to the given
+#		   (non-DST) time zone.
+#	stdMinutes - Minutes part of the offset from Greenwich to the
+#		     given (non-DST) time zone. Empty denotes zero.
+#	stdSeconds - Seconds part of the offset from Greenwich to the
+#		     given (non-DST) time zone. Empty denotes zero.
+#	dstName - Name of the time zone when DST is in effect, or the
+#		  empty string if the time zone does not observe Daylight
+#		  Saving Time.
+#	dstSignum, dstHours, dstMinutes, dstSeconds -
+#		Fields corresponding to stdSignum, stdHours, stdMinutes,
+#		stdSeconds for the Daylight Saving Time version of the
+#		time zone.  If dstHours is empty, it is presumed to be 1.
+#	startDayOfYear - The ordinal number of the day of the year on which
+#			 Daylight Saving Time begins.  If this field is
+#			 empty, then DST begins on a given month-week-day,
+#			 as below.
+#	startJ - The letter J, or an empty string.  If a J is present in
+#		 this field, then startDayOfYear does not count February 29
+#		 even in leap years.
+#	startMonth - The number of the month in which Daylight Saving Time
+#		     begins, supplied if startDayOfYear is empty.  If both
+#		     startDayOfYear and startMonth are empty, then US rules
+#		     are presumed.
+#	startWeekOfMonth - The number of the week in the month in which
+#			   Daylight Saving Time begins, in the range 1-5.
+#			   5 denotes the last week of the month even in a
+#			   4-week month.
+#	startDayOfWeek - The number of the day of the week (Sunday=0,
+#			 Saturday=6) on which Daylight Saving Time begins.
+#	startHours - The hours part of the time of day at which Daylight
+#		     Saving Time begins. An empty string is presumed to be 2.
+#	startMinutes - The minutes part of the time of day at which DST begins.
+#		       An empty string is presumed zero.
+#	startSeconds - The seconds part of the time of day at which DST begins.
+#		       An empty string is presumed zero.
+#	endDayOfYear, endJ, endMonth, endWeekOfMonth, endDayOfWeek,
+#	endHours, endMinutes, endSeconds -
+#		Specify the end of DST in the same way that the start* fields
+#		specify the beginning of DST.
+#		
+# This procedure serves only to break the time specifier into fields.
+# No attempt is made to canonicalize the fields or supply default values.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ParsePosixTimeZone { tz } {
+
+    if {[regexp -expanded -nocase -- {
+	^
+	# 1 - Standard time zone name
+	([[:alpha:]]+ | <[-+[:alnum:]]+>)
+	# 2 - Standard time zone offset, signum
+	([-+]?)
+	# 3 - Standard time zone offset, hours
+	([[:digit:]]{1,2})
+	(?:
+	    # 4 - Standard time zone offset, minutes
+	    : ([[:digit:]]{1,2}) 
+	    (?: 
+	        # 5 - Standard time zone offset, seconds
+		: ([[:digit:]]{1,2} )
+	    )?
+	)?
+	(?:
+	    # 6 - DST time zone name
+	    ([[:alpha:]]+ | <[-+[:alnum:]]+>)
+	    (?:
+	        (?:
+		    # 7 - DST time zone offset, signum
+		    ([-+]?)
+		    # 8 - DST time zone offset, hours
+		    ([[:digit:]]{1,2})
+		    (?:
+			# 9 - DST time zone offset, minutes
+			: ([[:digit:]]{1,2}) 
+			(?: 
+		            # 10 - DST time zone offset, seconds
+			    : ([[:digit:]]{1,2})
+			)?
+		    )?
+		)?
+	        (?:
+		    ,
+		    (?:
+			# 11 - Optional J in n and Jn form 12 - Day of year
+		        ( J ? )	( [[:digit:]]+ )
+                        | M
+			# 13 - Month number 14 - Week of month 15 - Day of week
+			( [[:digit:]] + ) 
+			[.] ( [[:digit:]] + ) 
+			[.] ( [[:digit:]] + )
+		    )
+		    (?:
+			# 16 - Start time of DST - hours
+			/ ( [[:digit:]]{1,2} )
+		        (?:
+			    # 17 - Start time of DST - minutes
+			    : ( [[:digit:]]{1,2} )
+			    (?:
+				# 18 - Start time of DST - seconds
+				: ( [[:digit:]]{1,2} )
+			    )?
+			)?
+		    )?
+		    ,
+		    (?:
+			# 19 - Optional J in n and Jn form 20 - Day of year
+		        ( J ? )	( [[:digit:]]+ )
+                        | M
+			# 21 - Month number 22 - Week of month 23 - Day of week
+			( [[:digit:]] + ) 
+			[.] ( [[:digit:]] + ) 
+			[.] ( [[:digit:]] + )
+		    )
+		    (?:
+			# 24 - End time of DST - hours
+			/ ( [[:digit:]]{1,2} )
+		        (?:
+			    # 25 - End time of DST - minutes
+			    : ( [[:digit:]]{1,2} )
+			    (?:
+				# 26 - End time of DST - seconds
+				: ( [[:digit:]]{1,2} )
+			    )?
+			)?
+		    )?
+                )?
+	    )?
+        )?
+	$
+    } $tz -> x(stdName) x(stdSignum) x(stdHours) x(stdMinutes) x(stdSeconds) \
+	     x(dstName) x(dstSignum) x(dstHours) x(dstMinutes) x(dstSeconds) \
+	     x(startJ) x(startDayOfYear) \
+	     x(startMonth) x(startWeekOfMonth) x(startDayOfWeek) \
+	     x(startHours) x(startMinutes) x(startSeconds) \
+	     x(endJ) x(endDayOfYear) \
+	     x(endMonth) x(endWeekOfMonth) x(endDayOfWeek) \
+	     x(endHours) x(endMinutes) x(endSeconds)] } {
+
+	# it's a good timezone
+
+	return [array get x]
+
+    } else {
+
+	return -code error\
+	    -errorcode [list CLOCK badTimeZone $tz] \
+	    "unable to parse time zone specification \"$tz\""
+
+    }
+
+}
+
+#----------------------------------------------------------------------
+#
+# ProcessPosixTimeZone --
+#
+#	Handle a Posix time zone after it's been broken out into
+#	fields.
+#
+# Parameters:
+#	z - Dictionary returned from 'ParsePosixTimeZone'
+#
+# Results:
+#	Returns time zone information for the 'TZData' array.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ProcessPosixTimeZone { z } {
+
+    variable MINWIDE
+    variable TZData
+
+    # Determine the standard time zone name and seconds east of Greenwich
+
+    set stdName [dict get $z stdName]
+    if { [string index $stdName 0] eq {<} } {
+	set stdName [string range $stdName 1 end-1]
+    }
+    if { [dict get $z stdSignum] eq {-} } {
+	set stdSignum +1
+    } else {
+	set stdSignum -1
+    }
+    set stdHours [lindex [::scan [dict get $z stdHours] %d] 0] 
+    if { [dict get $z stdMinutes] ne {} } {
+	set stdMinutes [lindex [::scan [dict get $z stdMinutes] %d] 0] 
+    } else {
+	set stdMinutes 0
+    }
+    if { [dict get $z stdSeconds] ne {} } {
+	set stdSeconds [lindex [::scan [dict get $z stdSeconds] %d] 0] 
+    } else {
+	set stdSeconds 0
+    }
+    set stdOffset [expr { ( ( $stdHours * 60 + $stdMinutes )
+			    * 60 + $stdSeconds )
+			  * $stdSignum }]
+    set data [list [list $MINWIDE $stdOffset 0 $stdName]]
+
+    # If there's no daylight zone, we're done
+
+    set dstName [dict get $z dstName]
+    if { $dstName eq {} } {
+	return $data
+    }
+    if { [string index $dstName 0] eq {<} } {
+	set dstName [string range $dstName 1 end-1]
+    }
+
+    # Determine the daylight name
+
+    if { [dict get $z dstSignum] eq {-} } {
+	set dstSignum +1
+    } else {
+	set dstSignum -1
+    }
+    if { [dict get $z dstHours] eq {} } {
+	set dstOffset [expr { 3600 + $stdOffset }]
+    } else {
+	set dstHours [lindex [::scan [dict get $z dstHours] %d] 0] 
+	if { [dict get $z dstMinutes] ne {} } {
+	    set dstMinutes [lindex [::scan [dict get $z dstMinutes] %d] 0] 
+	} else {
+	    set dstMinutes 0
+	}
+	if { [dict get $z dstSeconds] ne {} } {
+	    set dstSeconds [lindex [::scan [dict get $z dstSeconds] %d] 0] 
+	} else {
+	    set dstSeconds 0
+	}
+	set dstOffset [expr { ( ( $dstHours * 60 + $dstMinutes )
+				* 60 + $dstSeconds )
+			      * $dstSignum }]
+    }
+
+    # Fill in defaults for European or US DST rules
+    # US start time is the second Sunday in March
+    # EU start time is the last Sunday in March
+    # US end time is the first Sunday in November.
+    # EU end time is the last Sunday in October
+
+    if { [dict get $z startDayOfYear] eq {} 
+	 && [dict get $z startMonth] eq {} } {
+	if {($stdSignum * $stdHours>=0) && ($stdSignum * $stdHours<=12)} {
+	    # EU
+	    dict set z startWeekOfMonth 5
+	    if {$stdHours>2} {
+		dict set z startHours 2
+	    } else {
+		dict set z startHours [expr {$stdHours+1}]
+	    }
+	} else {
+	    # US
+	    dict set z startWeekOfMonth 2
+	    dict set z startHours 2
+	}
+	dict set z startMonth 3
+	dict set z startDayOfWeek 0
+	dict set z startMinutes 0
+	dict set z startSeconds 0
+    }
+    if { [dict get $z endDayOfYear] eq {} 
+	 && [dict get $z endMonth] eq {} } {
+	if {($stdSignum * $stdHours>=0) && ($stdSignum * $stdHours<=12)} {
+	    # EU
+	    dict set z endMonth 10
+	    dict set z endWeekOfMonth 5
+	    if {$stdHours>2} {
+		dict set z endHours 3
+	    } else {
+		dict set z endHours [expr {$stdHours+2}]
+	    }
+	} else {
+	    # US
+	    dict set z endMonth 11
+	    dict set z endWeekOfMonth 1
+	    dict set z endHours 2
+	}
+	dict set z endDayOfWeek 0
+	dict set z endMinutes 0
+	dict set z endSeconds 0
+    }
+
+    # Put DST in effect in all years from 1916 to 2099.
+
+    for { set y 1916 } { $y < 2099 } { incr y } {
+	set startTime [DeterminePosixDSTTime $z start $y]
+	incr startTime [expr { - wide($stdOffset) }]
+	set endTime [DeterminePosixDSTTime $z end $y]
+	incr endTime [expr { - wide($dstOffset) }]
+	if { $startTime < $endTime } {
+	    lappend data \
+		[list $startTime $dstOffset 1 $dstName] \
+		[list $endTime $stdOffset 0 $stdName]
+	} else {
+	    lappend data \
+		[list $endTime $stdOffset 0 $stdName] \
+		[list $startTime $dstOffset 1 $dstName]
+	}
+    }
+
+    return $data
+    
+}    
+
+#----------------------------------------------------------------------
+#
+# DeterminePosixDSTTime --
+#
+#	Determines the time that Daylight Saving Time starts or ends
+#	from a Posix time zone specification.
+#
+# Parameters:
+#	z - Time zone data returned from ParsePosixTimeZone.
+#	    Missing fields are expected to be filled in with
+#	    default values.
+#	bound - The word 'start' or 'end'
+#	y - The year for which the transition time is to be determined.
+#
+# Results:
+#	Returns the transition time as a count of seconds from
+#	the epoch.  The time is relative to the wall clock, not UTC.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::DeterminePosixDSTTime { z bound y } {
+
+    variable FEB_28
+
+    # Determine the start or end day of DST
+
+    set date [dict create era CE year $y]
+    set doy [dict get $z ${bound}DayOfYear]
+    if { $doy ne {} } {
+
+	# Time was specified as a day of the year
+
+	if { [dict get $z ${bound}J] ne {}
+	     && [IsGregorianLeapYear $y] 
+	     && ( $doy > $FEB_28 ) } {
+	    incr doy
+	}
+	dict set date dayOfYear $doy
+	set date [GetJulianDayFromEraYearDay $date[set date {}] 2361222]
+    } else {
+
+	# Time was specified as a day of the week within a month
+
+	dict set date month [dict get $z ${bound}Month]
+	dict set date dayOfWeek [dict get $z ${bound}DayOfWeek]
+	set dowim [dict get $z ${bound}WeekOfMonth]
+	if { $dowim >= 5 } {
+	    set dowim -1
+	}
+	dict set date dayOfWeekInMonth $dowim
+	set date [GetJulianDayFromEraYearMonthWeekDay $date[set date {}] 2361222]
+
+    }
+
+    set jd [dict get $date julianDay]
+    set seconds [expr { wide($jd) * wide(86400)
+			- wide(210866803200) }]
+
+    set h [dict get $z ${bound}Hours]
+    if { $h eq {} } {
+	set h 2
+    } else {
+	set h [lindex [::scan $h %d] 0]
+    }
+    set m [dict get $z ${bound}Minutes]
+    if { $m eq {} } {
+	set m 0
+    } else {
+	set m [lindex [::scan $m %d] 0]
+    }
+    set s [dict get $z ${bound}Seconds]
+    if { $s eq {} } {
+	set s 0
+    } else {
+	set s [lindex [::scan $s %d] 0]
+    }
+    set tod [expr { ( $h * 60 + $m ) * 60 + $s }]
+    return [expr { $seconds + $tod }]
+
+}
+
+#----------------------------------------------------------------------
+#
+# GetLocaleEra --
+#
+#	Given local time expressed in seconds from the Posix epoch,
+#	determine localized era and year within the era.
+#
+# Parameters:
+#	date - Dictionary that must contain the keys, 'localSeconds',
+#	       whose value is expressed as the appropriate local time;
+#	       and 'year', whose value is the Gregorian year.
+#	etable - Value of the LOCALE_ERAS key in the message catalogue
+#	         for the target locale.
+#
+# Results:
+#	Returns the dictionary, augmented with the keys, 'localeEra'
+#	and 'localeYear'.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::GetLocaleEra { date etable } {
+
+    set index [BSearch $etable [dict get $date localSeconds]]
+    if { $index < 0} {
+	dict set date localeEra \
+	    [::format %02d [expr { [dict get $date year] / 100 }]]
+	dict set date localeYear \
+	    [expr { [dict get $date year] % 100 }]
+    } else {
+	dict set date localeEra [lindex $etable $index 1]
+	dict set date localeYear [expr { [dict get $date year] 
+					 - [lindex $etable $index 2] }]
+    }
+    return $date
+
+}
+
+#----------------------------------------------------------------------
+#
+# GetJulianDayFromEraYearDay --
+#
+#	Given a year, month and day on the Gregorian calendar, determines
+#	the Julian Day Number beginning at noon on that date.
+#
+# Parameters:
+#	date -- A dictionary in which the 'era', 'year', and
+#		'dayOfYear' slots are populated. The calendar in use
+#		is determined by the date itself relative to:
+#       changeover -- Julian day on which the Gregorian calendar was
+#		adopted in the current locale.
+#
+# Results:
+#	Returns the given dictionary augmented with a 'julianDay' key
+#	whose value is the desired Julian Day Number, and a 'gregorian'
+#	key that specifies whether the calendar is Gregorian (1) or
+#	Julian (0).
+#
+# Side effects:
+#	None.
+#
+# Bugs:
+#	This code needs to be moved to the C layer.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::GetJulianDayFromEraYearDay {date changeover} {
+
+    # Get absolute year number from the civil year
+
+    switch -exact -- [dict get $date era] {
+	BCE {
+	    set year [expr { 1 - [dict get $date year] }]
+	}
+	CE {
+	    set year [dict get $date year]
+	}
+    }
+    set ym1 [expr { $year - 1 }]
+
+    # Try the Gregorian calendar first.
+
+    dict set date gregorian 1
+    set jd [expr { 1721425
+		   + [dict get $date dayOfYear]
+		   + ( 365 * $ym1 )
+		   + ( $ym1 / 4 )
+		   - ( $ym1 / 100 )
+		   + ( $ym1 / 400 ) }]
+    
+    # If the date is before the Gregorian change, use the Julian calendar.
+
+    if { $jd < $changeover } {
+	dict set date gregorian 0
+	set jd [expr { 1721423
+		       + [dict get $date dayOfYear]
+		       + ( 365 * $ym1 )
+		       + ( $ym1 / 4 ) }]
+    }
+
+    dict set date julianDay $jd
+    return $date
+}
+
+#----------------------------------------------------------------------
+#
+# GetJulianDayFromEraYearMonthWeekDay --
+#
+#	Determines the Julian Day number corresponding to the nth
+#	given day-of-the-week in a given month.
+#
+# Parameters:
+#	date - Dictionary containing the keys, 'era', 'year', 'month'
+#	       'weekOfMonth', 'dayOfWeek', and 'dayOfWeekInMonth'.
+#	changeover - Julian Day of adoption of the Gregorian calendar
+#
+# Results:
+#	Returns the given dictionary, augmented with a 'julianDay' key.
+#
+# Side effects:
+#	None.
+#
+# Bugs:
+#	This code needs to be moved to the C layer.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::GetJulianDayFromEraYearMonthWeekDay {date changeover} {
+
+    # Come up with a reference day; either the zeroeth day of the
+    # given month (dayOfWeekInMonth >= 0) or the seventh day of the
+    # following month (dayOfWeekInMonth < 0)
+
+    set date2 $date
+    set week [dict get $date dayOfWeekInMonth]
+    if { $week >= 0 } {
+	dict set date2 dayOfMonth 0
+    } else {
+	dict incr date2 month
+	dict set date2 dayOfMonth 7
+    }
+    set date2 [GetJulianDayFromEraYearMonthDay $date2[set date2 {}] \
+		   $changeover]
+    set wd0 [WeekdayOnOrBefore [dict get $date dayOfWeek] \
+		 [dict get $date2 julianDay]]
+    dict set date julianDay [expr { $wd0 + 7 * $week }]
+    return $date
+
+}
+
+#----------------------------------------------------------------------
+#
+# IsGregorianLeapYear --
+#
+#	Determines whether a given date represents a leap year in the
+#	Gregorian calendar.
+#
+# Parameters:
+#	date -- The date to test.  The fields, 'era', 'year' and 'gregorian'
+#	        must be set.
+#
+# Results:
+#	Returns 1 if the year is a leap year, 0 otherwise.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::IsGregorianLeapYear { date } {
+
+    switch -exact -- [dict get $date era] {
+	BCE { 
+	    set year [expr { 1 - [dict get $date year]}]
+	}
+	CE {
+	    set year [dict get $date year]
+	}
+    }
+    if { $year % 4 != 0 } {
+	return 0
+    } elseif { ![dict get $date gregorian] } {
+	return 1
+    } elseif { $year % 400 == 0 } {
+	return 1
+    } elseif { $year % 100 == 0 } {
+	return 0
+    } else {
+	return 1
+    }
+
+}
+
+#----------------------------------------------------------------------
+#
+# WeekdayOnOrBefore --
+#
+#	Determine the nearest day of week (given by the 'weekday'
+#	parameter, Sunday==0) on or before a given Julian Day.
+#
+# Parameters:
+#	weekday -- Day of the week
+#	j -- Julian Day number
+#
+# Results:
+#	Returns the Julian Day Number of the desired date.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::WeekdayOnOrBefore { weekday j } {
+
+    set k [expr { ( $weekday + 6 )  % 7 }]
+    return [expr { $j - ( $j - $k ) % 7 }]
+
+}
+
+#----------------------------------------------------------------------
+#
+# BSearch --
+#
+#	Service procedure that does binary search in several places
+#	inside the 'clock' command.
+#
+# Parameters:
+#	list - List of lists, sorted in ascending order by the
+#	       first elements
+#	key - Value to search for
+#
+# Results:
+#	Returns the index of the greatest element in $list that is less
+#	than or equal to $key.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::BSearch { list key } {
+
+    if {[llength $list] == 0} {
+	return -1
+    }
+    if { $key < [lindex $list 0 0] } {
+	return -1
+    }
+
+    set l 0
+    set u [expr { [llength $list] - 1 }]
+
+    while { $l < $u } {
+
+	# At this point, we know that
+	#   $k >= [lindex $list $l 0]
+	#   Either $u == [llength $list] or else $k < [lindex $list $u+1 0]
+	# We find the midpoint of the interval {l,u} rounded UP, compare
+	# against it, and set l or u to maintain the invariant.  Note
+	# that the interval shrinks at each step, guaranteeing convergence.
+
+	set m [expr { ( $l + $u + 1 ) / 2 }]
+	if { $key >= [lindex $list $m 0] } {
+	    set l $m
+	} else {
+	    set u [expr { $m - 1 }]
+	}
+    }
+
+    return $l
+}
+
+#----------------------------------------------------------------------
+#
+# clock add --
+#
+#	Adds an offset to a given time.
+#
+# Syntax:
+#	clock add clockval ?count unit?... ?-option value?
+#
+# Parameters:
+#	clockval -- Starting time value
+#	count -- Amount of a unit of time to add
+#	unit -- Unit of time to add, must be one of:
+#			years year months month weeks week
+#			days day hours hour minutes minute
+#			seconds second
+#
+# Options:
+#	-gmt BOOLEAN
+#		(Deprecated) Flag synonymous with '-timezone :GMT'
+#	-timezone ZONE
+#		Name of the time zone in which calculations are to be done.
+#	-locale NAME
+#		Name of the locale in which calculations are to be done.
+#		Used to determine the Gregorian change date.
+#
+# Results:
+#	Returns the given time adjusted by the given offset(s) in
+#	order.
+#
+# Notes:
+#	It is possible that adding a number of months or years will adjust
+#	the day of the month as well.  For instance, the time at
+#	one month after 31 January is either 28 or 29 February, because
+#	February has fewer than 31 days.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::add { clockval args } {
+
+    if { [llength $args] % 2 != 0 } {
+	set cmdName "clock add"
+	return -code error \
+	    -errorcode [list CLOCK wrongNumArgs] \
+	    "wrong \# args: should be\
+             \"$cmdName clockval ?number units?...\
+             ?-gmt boolean? ?-locale LOCALE? ?-timezone ZONE?\""
+    }
+    if { [catch { expr {wide($clockval)} } result] } {
+	return -code error $result
+    }
+
+    set offsets {}
+    set gmt 0
+    set locale c
+    set timezone [GetSystemTimeZone]
+
+    foreach { a b } $args {
+
+	if { [string is integer -strict $a] } {
+
+	    lappend offsets $a $b
+
+	} else {
+
+	    switch -exact -- $a {
+
+		-g - -gm - -gmt {
+		    set gmt $b
+		}
+		-l - -lo - -loc - -loca - -local - -locale {
+		    set locale [string tolower $b]
+		}
+		-t - -ti - -tim - -time - -timez - -timezo - -timezon -
+		-timezone {
+		    set timezone $b
+		}
+		default {
+		    return -code error \
+			-errorcode [list CLOCK badSwitch $a] \
+			"bad switch \"$a\",\
+                         must be -gmt, -locale or -timezone"
+		}
+	    }
+	}
+    }
+
+    # Check options for validity
+
+    if { [info exists saw(-gmt)] && [info exists saw(-timezone)] } {
+	return -code error \
+	    -errorcode [list CLOCK gmtWithTimezone] \
+	    "cannot use -gmt and -timezone in same call"
+    }
+    if { [catch { expr { wide($clockval) } } result] } {
+	return -code error \
+	    "expected integer but got \"$clockval\"" 
+    }
+    if { ![string is boolean $gmt] } {
+	return -code error \
+	    "expected boolean value but got \"$gmt\""
+    } else {
+	if { $gmt } {
+	    set timezone :GMT
+	}
+    }
+
+    EnterLocale $locale oldLocale
+    
+    set changeover [mc GREGORIAN_CHANGE_DATE]
+
+    if {[catch {SetupTimeZone $timezone} retval opts]} {
+	dict unset opts -errorinfo
+	return -options $opts $retval
+    }
+
+    set status [catch {
+
+	foreach { quantity unit } $offsets {
+
+	    switch -exact -- $unit {
+
+		years - year {
+		    set clockval \
+			[AddMonths [expr { 12 * $quantity }] \
+			     $clockval $timezone $changeover]
+		}
+		months - month {
+		    set clockval [AddMonths $quantity $clockval $timezone \
+				     $changeover]
+		}
+
+		weeks - week {
+		    set clockval [AddDays [expr { 7 * $quantity }] \
+				      $clockval $timezone $changeover]
+		}
+		days - day {
+		    set clockval [AddDays $quantity $clockval $timezone \
+				      $changeover]
+		}
+
+		hours - hour {
+		    set clockval [expr { 3600 * $quantity + $clockval }]
+		}
+		minutes - minute {
+		    set clockval [expr { 60 * $quantity + $clockval }]
+		}
+		seconds - second {
+		    set clockval [expr { $quantity + $clockval }]
+		}
+
+		default {
+		    error "unknown unit \"$unit\", must be \
+                        years, months, weeks, days, hours, minutes or seconds" \
+			  "unknown unit \"$unit\", must be \
+                        years, months, weeks, days, hours, minutes or seconds" \
+			[list CLOCK badUnit $unit]
+		}
+	    }
+	}
+    } result opts]
+
+    # Restore the locale
+
+    if { [info exists oldLocale] } {
+	mclocale $oldLocale
+    }
+
+    if { $status == 1 } {
+	if { [lindex [dict get $opts -errorcode] 0] eq {CLOCK} } {
+	    dict unset opts -errorinfo
+	}
+	return -options $opts $result
+    } else {
+	return $clockval
+    }
+
+}
+
+#----------------------------------------------------------------------
+#
+# AddMonths --
+#
+#	Add a given number of months to a given clock value in a given
+#	time zone.
+#
+# Parameters:
+#	months - Number of months to add (may be negative)
+#	clockval - Seconds since the epoch before the operation
+#	timezone - Time zone in which the operation is to be performed
+#
+# Results:
+#	Returns the new clock value as a number of seconds since
+#	the epoch.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AddMonths { months clockval timezone changeover } {
+
+    variable DaysInRomanMonthInCommonYear
+    variable DaysInRomanMonthInLeapYear
+    variable TZData
+
+    # Convert the time to year, month, day, and fraction of day.
+
+    set date [GetDateFields $clockval $TZData($timezone) $changeover]
+    dict set date secondOfDay [expr { [dict get $date localSeconds]
+				      % 86400 }]
+    dict set date tzName $timezone
+
+    # Add the requisite number of months
+
+    set m [dict get $date month]
+    incr m $months
+    incr m -1
+    set delta [expr { $m / 12 }]
+    set mm [expr { $m % 12 }]
+    dict set date month [expr { $mm + 1 }]
+    dict incr date year $delta
+
+    # If the date doesn't exist in the current month, repair it
+
+    if { [IsGregorianLeapYear $date] } {
+	set hath [lindex $DaysInRomanMonthInLeapYear $mm]
+    } else {
+	set hath [lindex $DaysInRomanMonthInCommonYear $mm]
+    }
+    if { [dict get $date dayOfMonth] > $hath } {
+	dict set date dayOfMonth $hath
+    }
+
+    # Reconvert to a number of seconds
+
+    set date [GetJulianDayFromEraYearMonthDay \
+		  $date[set date {}]\
+		  $changeover]
+    dict set date localSeconds \
+	[expr { -210866803200
+		+ ( 86400 * wide([dict get $date julianDay]) )
+		+ [dict get $date secondOfDay] }]
+    set date [ConvertLocalToUTC $date[set date {}] $TZData($timezone) \
+		 $changeover]
+
+    return [dict get $date seconds]
+
+}
+
+#----------------------------------------------------------------------
+#
+# AddDays --
+#
+#	Add a given number of days to a given clock value in a given
+#	time zone.
+#
+# Parameters:
+#	days - Number of days to add (may be negative)
+#	clockval - Seconds since the epoch before the operation
+#	timezone - Time zone in which the operation is to be performed
+#	changeover - Julian Day on which the Gregorian calendar was adopted
+#		     in the target locale.
+#
+# Results:
+#	Returns the new clock value as a number of seconds since
+#	the epoch.
+#
+# Side effects:
+#	None.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::AddDays { days clockval timezone changeover } {
+
+    variable TZData
+
+    # Convert the time to Julian Day
+
+    set date [GetDateFields $clockval $TZData($timezone) $changeover]
+    dict set date secondOfDay [expr { [dict get $date localSeconds]
+				      % 86400 }]
+    dict set date tzName $timezone
+
+    # Add the requisite number of days
+
+    dict incr date julianDay $days
+
+    # Reconvert to a number of seconds
+
+    dict set date localSeconds \
+	[expr { -210866803200
+		+ ( 86400 * wide([dict get $date julianDay]) )
+		+ [dict get $date secondOfDay] }]
+    set date [ConvertLocalToUTC $date[set date {}] $TZData($timezone) \
+		  $changeover]
+
+    return [dict get $date seconds]
+
+}
+
+#----------------------------------------------------------------------
+#
+# mc --
+#
+#	Wrapper around ::msgcat::mc that caches the result according
+#	to the locale.
+#
+# Parameters:
+#	Accepts the name of the message to retrieve.
+#
+# Results:
+#	Returns the message text.
+#
+# Side effects:
+#	Caches the message text.
+#
+# Notes:
+#	Only the single-argument version of [mc] is supported.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::mc { name } {
+    variable McLoaded
+    set Locale [mclocale]
+    if { [dict exists $McLoaded $Locale $name] } {
+	return [dict get $McLoaded $Locale $name]
+    } else {
+	set val [::msgcat::mc $name]
+	dict set McLoaded $Locale $name $val
+	return $val
+    }
+}
+
+#----------------------------------------------------------------------
+#
+# ClearCaches --
+#
+#	Clears all caches to reclaim the memory used in [clock]
+#
+# Parameters:
+#	None.
+#
+# Results:
+#	None.
+#
+# Side effects:
+#	Caches are cleared.
+#
+#----------------------------------------------------------------------
+
+proc ::tcl::clock::ClearCaches {} {
+
+    variable FormatProc
+    variable LocaleNumeralCache
+    variable McLoaded
+    variable CachedSystemTimeZone
+    variable TimeZoneBad
+
+    foreach p [info procs [namespace current]::scanproc'*] {
+	rename $p {}
+    }
+    foreach p [info procs [namespace current]::formatproc'*] {
+	rename $p {}
+    }
+
+    catch {unset FormatProc}
+    set LocaleNumeralCache {}
+    set McLoaded {}
+    catch {unset CachedSystemTimeZone}
+    set TimeZoneBad {}
+    InitTZData
+
+}
diff --git a/library/dde/pkgIndex.tcl b/library/dde/pkgIndex.tcl
index 1450276..114dee6 100644
--- a/library/dde/pkgIndex.tcl
+++ b/library/dde/pkgIndex.tcl
@@ -1,7 +1,7 @@
 if {![package vsatisfies [package provide Tcl] 8]} return
 if {[info sharedlibextension] != ".dll"} return
 if {[info exists ::tcl_platform(debug)]} {
-    package ifneeded dde 1.2.5 [list load [file join $dir tcldde12g.dll] dde]
+    package ifneeded dde 1.3.3 [list load [file join $dir tcldde13g.dll] dde]
 } else {
-    package ifneeded dde 1.2.5 [list load [file join $dir tcldde12.dll] dde]
+    package ifneeded dde 1.3.3 [list load [file join $dir tcldde13.dll] dde]
 }
diff --git a/library/history.tcl b/library/history.tcl
index 1fbb4ed..888d144 100644
--- a/library/history.tcl
+++ b/library/history.tcl
@@ -254,7 +254,7 @@ proc history {args} {
 	if {![info exists history($i)]} {
 	    continue
 	}
-	set cmd [string map [list \n \n\t] [string trimright $history($i) \ \n]]
+        set cmd [string map [list \n \n\t] [string trimright $history($i) \ \n]]
 	append result $newline[format "%6d  %s" $i $cmd]
 	set newline \n
     }
diff --git a/library/http/http.tcl b/library/http/http.tcl
index ceef043..4a517ac 100644
--- a/library/http/http.tcl
+++ b/library/http/http.tcl
@@ -1,45 +1,38 @@
 # http.tcl --
 #
 #	Client-side HTTP for GET, POST, and HEAD commands. These routines can
-#	be used in untrusted code that uses the Safesock security policy. These
-#	procedures use a callback interface to avoid using vwait, which is not
-#	defined in the safe base.
+#	be used in untrusted code that uses the Safesock security policy.
+#	These procedures use a callback interface to avoid using vwait, which
+#	is not defined in the safe base.
 #
 # See the file "license.terms" for information on usage and redistribution of
 # this file, and for a DISCLAIMER OF ALL WARRANTIES.
 
-# Rough version history:
-# 1.0	Old http_get interface.
-# 2.0	http:: namespace and http::geturl.
-# 2.1	Added callbacks to handle arriving data, and timeouts.
-# 2.2	Added ability to fetch into a channel.
-# 2.3	Added SSL support, and ability to post from a channel. This version
-#	also cleans up error cases and eliminates the "ioerror" status in
-#	favor of raising an error
-# 2.4	Added -binary option to http::geturl and charset element to the state
-#	array.
-
 package require Tcl 8.4
-# Keep this in sync with pkgIndex.tcl and with the install directories
-# in Makefiles
-package provide http 2.5.7
+# Keep this in sync with pkgIndex.tcl and with the install directories in
+# Makefiles
+package provide http 2.7.11
 
 namespace eval http {
+    # Allow resourcing to not clobber existing data
+
     variable http
-    array set http {
-	-accept */*
-	-proxyhost {}
-	-proxyport {}
-	-proxyfilter http::ProxyRequired
-	-urlencoding utf-8
+    if {![info exists http]} {
+	array set http {
+	    -accept */*
+	    -proxyhost {}
+	    -proxyport {}
+	    -proxyfilter http::ProxyRequired
+	    -urlencoding utf-8
+	}
+	set http(-useragent) "Tcl http client package [package provide http]"
     }
-    set http(-useragent) "Tcl http client package [package provide http]"
 
     proc init {} {
 	# Set up the map for quoting chars. RFC3986 Section 2.3 say percent
-	# encode all except: "... percent-encoded octets in the ranges of ALPHA
-	# (%41-%5A and %61-%7A), DIGIT (%30-%39), hyphen (%2D), period (%2E),
-	# underscore (%5F), or tilde (%7E) should not be created by URI
+	# encode all except: "... percent-encoded octets in the ranges of
+	# ALPHA (%41-%5A and %61-%7A), DIGIT (%30-%39), hyphen (%2D), period
+	# (%2E), underscore (%5F), or tilde (%7E) should not be created by URI
 	# producers ..."
 	for {set i 0} {$i <= 256} {incr i} {
 	    set c [format %c $i]
@@ -50,33 +43,65 @@ namespace eval http {
 	# These are handled specially
 	set map(\n) %0D%0A
 	variable formMap [array get map]
+
+	# Create a map for HTTP/1.1 open sockets
+	variable socketmap
+	if {[info exists socketmap]} {
+	    # Close but don't remove open sockets on re-init
+	    foreach {url sock} [array get socketmap] {
+		catch {close $sock}
+	    }
+	}
+	array set socketmap {}
     }
     init
 
     variable urlTypes
-    array set urlTypes {
-	http	{80 ::socket}
+    if {![info exists urlTypes]} {
+	set urlTypes(http) [list 80 ::socket]
     }
 
     variable encodings [string tolower [encoding names]]
     # This can be changed, but iso8859-1 is the RFC standard.
-    variable defaultCharset "iso8859-1"
+    variable defaultCharset
+    if {![info exists defaultCharset]} {
+	set defaultCharset "iso8859-1"
+    }
+
+    # Force RFC 3986 strictness in geturl url verification?
+    variable strict
+    if {![info exists strict]} {
+	set strict 1
+    }
 
-    # Force RFC 3986 strictness in geturl url verification?  Not for 8.4.x
-    variable strict 0
+    # Let user control default keepalive for compatibility
+    variable defaultKeepalive
+    if {![info exists defaultKeepalive]} {
+	set defaultKeepalive 0
+    }
 
     namespace export geturl config reset wait formatQuery register unregister
     # Useful, but not exported: data size status code
 }
 
+# http::Log --
+#
+#	Debugging output -- define this to observe HTTP/1.1 socket usage.
+#	Should echo any args received.
+#
+# Arguments:
+#     msg	Message to output
+#
+proc http::Log {args} {}
+
 # http::register --
 #
 #     See documentation for details.
 #
 # Arguments:
-#     proto           URL protocol prefix, e.g. https
-#     port            Default port for protocol
-#     command         Command to use to create socket
+#     proto	URL protocol prefix, e.g. https
+#     port	Default port for protocol
+#     command	Command to use to create socket
 # Results:
 #     list of port and command that was registered.
 
@@ -90,7 +115,7 @@ proc http::register {proto port command} {
 #     Unregisters URL protocol handler
 #
 # Arguments:
-#     proto           URL protocol prefix, e.g. https
+#     proto	URL protocol prefix, e.g. https
 # Results:
 #     list of port and command that was unregistered.
 
@@ -125,21 +150,19 @@ proc http::config {args} {
 	return $result
     }
     set options [string map {- ""} $options]
-    set pat ^-([join $options |])$
+    set pat ^-(?:[join $options |])$
     if {[llength $args] == 1} {
 	set flag [lindex $args 0]
-	if {[regexp -- $pat $flag]} {
-	    return $http($flag)
-	} else {
+	if {![regexp -- $pat $flag]} {
 	    return -code error "Unknown option $flag, must be: $usage"
 	}
+	return $http($flag)
     } else {
 	foreach {flag value} $args {
-	    if {[regexp -- $pat $flag]} {
-		set http($flag) $value
-	    } else {
+	    if {![regexp -- $pat $flag]} {
 		return -code error "Unknown option $flag, must be: $usage"
 	    }
+	    set http($flag) $value
 	}
     }
 }
@@ -152,33 +175,79 @@ proc http::config {args} {
 #	token	    Connection token.
 #	errormsg    (optional) If set, forces status to error.
 #       skipCB      (optional) If set, don't call the -command callback. This
-#                   is useful when geturl wants to throw an exception instead
-#                   of calling the callback. That way, the same error isn't
-#                   reported to two places.
+#		    is useful when geturl wants to throw an exception instead
+#		    of calling the callback. That way, the same error isn't
+#		    reported to two places.
 #
 # Side Effects:
 #        Closes the socket
 
-proc http::Finish { token {errormsg ""} {skipCB 0}} {
+proc http::Finish {token {errormsg ""} {skipCB 0}} {
     variable $token
     upvar 0 $token state
     global errorInfo errorCode
-    if {[string length $errormsg] != 0} {
+    if {$errormsg ne ""} {
 	set state(error) [list $errormsg $errorInfo $errorCode]
-	set state(status) error
-    }
-    catch {close $state(sock)}
-    catch {after cancel $state(after)}
-    if {[info exists state(-command)] && !$skipCB} {
-	if {[catch {eval $state(-command) {$token}} err]} {
-	    if {[string length $errormsg] == 0} {
-		set state(error) [list $err $errorInfo $errorCode]
-		set state(status) error
-	    }
+	set state(status) "error"
+    }
+    if {
+	($state(status) eq "timeout") || ($state(status) eq "error") ||
+	([info exists state(connection)] && ($state(connection) eq "close"))
+    } then {
+        CloseSocket $state(sock) $token
+    }
+    if {[info exists state(after)]} {
+	after cancel $state(after)
+    }
+    if {[info exists state(-command)] && !$skipCB
+	    && ![info exists state(done-command-cb)]} {
+	set state(done-command-cb) yes
+	if {[catch {eval $state(-command) {$token}} err] && $errormsg eq ""} {
+	    set state(error) [list $err $errorInfo $errorCode]
+	    set state(status) error
+	}
+    }
+}
+
+# http::CloseSocket -
+#
+#	Close a socket and remove it from the persistent sockets table.  If
+#	possible an http token is included here but when we are called from a
+#	fileevent on remote closure we need to find the correct entry - hence
+#	the second section.
+
+proc ::http::CloseSocket {s {token {}}} {
+    variable socketmap
+    catch {fileevent $s readable {}}
+    set conn_id {}
+    if {$token ne ""} {
+        variable $token
+        upvar 0 $token state
+        if {[info exists state(socketinfo)]} {
+	    set conn_id $state(socketinfo)
+        }
+    } else {
+        set map [array get socketmap]
+        set ndx [lsearch -exact $map $s]
+        if {$ndx != -1} {
+	    incr ndx -1
+	    set conn_id [lindex $map $ndx]
+        }
+    }
+    if {$conn_id eq {} || ![info exists socketmap($conn_id)]} {
+        Log "Closing socket $s (no connection info)"
+        if {[catch {close $s} err]} {
+	    Log "Error: $err"
 	}
-	if {[info exists state(-command)]} {
-	    # Command callback may already have unset our state
-	    unset state(-command)
+    } else {
+	if {[info exists socketmap($conn_id)]} {
+	    Log "Closing connection $conn_id (sock $socketmap($conn_id))"
+	    if {[catch {close $socketmap($conn_id)} err]} {
+		Log "Error: $err"
+	    }
+	    unset socketmap($conn_id)
+	} else {
+	    Log "Cannot close connection $conn_id - no socket in socket map"
 	}
     }
 }
@@ -194,7 +263,7 @@ proc http::Finish { token {errormsg ""} {skipCB 0}} {
 # Side Effects:
 #       See Finish
 
-proc http::reset { token {why reset} } {
+proc http::reset {token {why reset}} {
     variable $token
     upvar 0 $token state
     set state(status) $why
@@ -217,13 +286,14 @@ proc http::reset { token {why reset} } {
 #       args		Option value pairs. Valid options include:
 #				-blocksize, -validate, -headers, -timeout
 # Results:
-#	Returns a token for this connection. This token is the name of an array
-#	that the caller should unset to garbage collect the state.
+#	Returns a token for this connection. This token is the name of an
+#	array that the caller should unset to garbage collect the state.
 
-proc http::geturl { url args } {
+proc http::geturl {url args} {
     variable http
     variable urlTypes
     variable defaultCharset
+    variable defaultKeepalive
     variable strict
 
     # Initialize the state variable, an array. We'll return the name of this
@@ -241,47 +311,58 @@ proc http::geturl { url args } {
 
     array set state {
 	-binary		false
-	-blocksize 	8192
+	-blocksize	8192
 	-queryblocksize 8192
-	-validate 	0
-	-headers 	{}
-	-timeout 	0
-	-type           application/x-www-form-urlencoded
+	-validate	0
+	-headers	{}
+	-timeout	0
+	-type		application/x-www-form-urlencoded
 	-queryprogress	{}
-	state		header
+	-protocol	1.1
+	binary		0
+	state		connecting
 	meta		{}
 	coding		{}
 	currentsize	0
 	totalsize	0
 	querylength	0
 	queryoffset	0
-        type            text/html
-        body            {}
+	type		text/html
+	body		{}
 	status		""
-	http            ""
+	http		""
+	connection	close
     }
+    set state(-keepalive) $defaultKeepalive
+    set state(-strict) $strict
     # These flags have their types verified [Bug 811170]
     array set type {
 	-binary		boolean
 	-blocksize	integer
 	-queryblocksize integer
-	-validate	boolean
+	-strict		boolean
 	-timeout	integer
+	-validate	boolean
     }
     set state(charset)	$defaultCharset
-    set options {-binary -blocksize -channel -command -handler -headers \
-	    -progress -query -queryblocksize -querychannel -queryprogress\
-	    -validate -timeout -type}
-    set usage [join $options ", "]
+    set options {
+	-binary -blocksize -channel -command -handler -headers -keepalive
+	-method -myaddr -progress -protocol -query -queryblocksize
+	-querychannel -queryprogress -strict -timeout -type -validate
+    }
+    set usage [join [lsort $options] ", "]
     set options [string map {- ""} $options]
-    set pat ^-([join $options |])$
+    set pat ^-(?:[join $options |])$
     foreach {flag value} $args {
-	if {[regexp $pat $flag]} {
+	if {[regexp -- $pat $flag]} {
 	    # Validate numbers
-	    if {[info exists type($flag)] && \
-		    ![string is $type($flag) -strict $value]} {
+	    if {
+		[info exists type($flag)] &&
+		![string is $type($flag) -strict $value]
+	    } then {
 		unset $token
-		return -code error "Bad value for $flag ($value), must be $type($flag)"
+		return -code error \
+		    "Bad value for $flag ($value), must be $type($flag)"
 	    }
 	    set state($flag) $value
 	} else {
@@ -320,7 +401,9 @@ proc http::geturl { url args } {
     #	pass it in here, but it's cheap to strip).
     #
     # An example of a URL that has all the parts:
-    #   http://jschmoe:xyzzy@www.bogus.net:8000/foo/bar.tml?q=foo#changes
+    #
+    #     http://jschmoe:xyzzy@www.bogus.net:8000/foo/bar.tml?q=foo#changes
+    #
     # The "http" is the protocol, the user is "jschmoe", the password is
     # "xyzzy", the host is "www.bogus.net", the port is "8000", the path is
     # "/foo/bar.tml", the query is "q=foo", and the fragment is "changes".
@@ -331,8 +414,8 @@ proc http::geturl { url args } {
     # Also note that we do not currently support IPv6 addresses.
     #
     # From a validation perspective, we need to ensure that the parts of the
-    # URL that are going to the server are correctly encoded.
-    # This is only done if $::http::strict is true (default 0 for compat).
+    # URL that are going to the server are correctly encoded.  This is only
+    # done if $state(-strict) is true (inherited from $::http::strict).
 
     set URLmatcher {(?x)		# this is _expanded_ syntax
 	^
@@ -346,7 +429,7 @@ proc http::geturl { url args } {
 	    ( [^/:\#?]+ )		# <host part of authority>
 	    (?: : (\d+) )?		# <port part of authority>
 	)?
-	( / [^\#?]* (?: \? [^\#?]* )?)?	# <path> (including query)
+	( / [^\#]*)?			# <path> (including query)
 	(?: \# (.*) )?			# <fragment>
 	$
     }
@@ -365,7 +448,7 @@ proc http::geturl { url args } {
 	# Note that we don't check the hostname for validity here; if it's
 	# invalid, we'll simply fail to resolve it later on.
     }
-    if {$port ne "" && $port>65535} {
+    if {$port ne "" && $port > 65535} {
 	unset $token
 	return -code error "Invalid port number: $port"
     }
@@ -378,7 +461,7 @@ proc http::geturl { url args } {
 	    (?: [-\w.~!$&'()*+,;=:] | %[0-9a-f][0-9a-f] )+
 	    $
 	}
-	if {$strict && ![regexp -- $validityRE $user]} {
+	if {$state(-strict) && ![regexp -- $validityRE $user]} {
 	    unset $token
 	    # Provide a better error message in this error case
 	    if {[regexp {(?i)%(?![0-9a-f][0-9a-f]).?.?} $user bad]} {
@@ -398,19 +481,19 @@ proc http::geturl { url args } {
 	    (?: \? (?: [-\w.~!$&'()*+,;=:@/?] | %[0-9a-f][0-9a-f] )* )?
 	    $
 	}
-	if {$strict && ![regexp -- $validityRE $srvurl]} {
+	if {$state(-strict) && ![regexp -- $validityRE $srvurl]} {
 	    unset $token
 	    # Provide a better error message in this error case
 	    if {[regexp {(?i)%(?![0-9a-f][0-9a-f])..} $srvurl bad]} {
 		return -code error \
-			"Illegal encoding character usage \"$bad\" in URL path"
+		    "Illegal encoding character usage \"$bad\" in URL path"
 	    }
 	    return -code error "Illegal characters in URL path"
 	}
     } else {
 	set srvurl /
     }
-    if {[string length $proto] == 0} {
+    if {$proto eq ""} {
 	set proto http
     }
     if {![info exists urlTypes($proto)]} {
@@ -420,7 +503,7 @@ proc http::geturl { url args } {
     set defport [lindex $urlTypes($proto) 0]
     set defcmd [lindex $urlTypes($proto) 1]
 
-    if {[string length $port] == 0} {
+    if {$port eq ""} {
 	set port $defport
     }
     if {![catch {$http(-proxyfilter) $host} proxy]} {
@@ -445,71 +528,120 @@ proc http::geturl { url args } {
     # If a timeout is specified we set up the after event and arrange for an
     # asynchronous socket connection.
 
+    set sockopts [list -async]
     if {$state(-timeout) > 0} {
 	set state(after) [after $state(-timeout) \
 		[list http::reset $token timeout]]
-	set async -async
-    } else {
-	set async ""
     }
 
     # If we are using the proxy, we must pass in the full URL that includes
     # the server name.
 
-    if {[info exists phost] && [string length $phost]} {
+    if {[info exists phost] && ($phost ne "")} {
 	set srvurl $url
-	set conStat [catch {eval $defcmd $async {$phost $pport}} s]
+	set targetAddr [list $phost $pport]
     } else {
-	set conStat [catch {eval $defcmd $async {$host $port}} s]
+	set targetAddr [list $host $port]
+    }
+    # Proxy connections aren't shared among different hosts.
+    set state(socketinfo) $host:$port
+
+    # See if we are supposed to use a previously opened channel.
+    if {$state(-keepalive)} {
+	variable socketmap
+	if {[info exists socketmap($state(socketinfo))]} {
+	    if {[catch {fconfigure $socketmap($state(socketinfo))}]} {
+		Log "WARNING: socket for $state(socketinfo) was closed"
+		unset socketmap($state(socketinfo))
+	    } else {
+		set sock $socketmap($state(socketinfo))
+		Log "reusing socket $sock for $state(socketinfo)"
+		catch {fileevent $sock writable {}}
+		catch {fileevent $sock readable {}}
+	    }
+	}
+	# don't automatically close this connection socket
+	set state(connection) {}
+    }
+    if {![info exists sock]} {
+	# Pass -myaddr directly to the socket command
+	if {[info exists state(-myaddr)]} {
+	    lappend sockopts -myaddr $state(-myaddr)
+	}
+        if {[catch {eval $defcmd $sockopts $targetAddr} sock]} {
+	    # something went wrong while trying to establish the connection.
+	    # Clean up after events and such, but DON'T call the command
+	    # callback (if available) because we're going to throw an
+	    # exception from here instead.
+
+	    set state(sock) $sock
+	    Finish $token "" 1
+	    cleanup $token
+	    return -code error $sock
+        }
+    }
+    set state(sock) $sock
+    Log "Using $sock for $state(socketinfo)" \
+        [expr {$state(-keepalive)?"keepalive":""}]
+    if {$state(-keepalive)} {
+        set socketmap($state(socketinfo)) $sock
     }
 
-    if {$conStat} {
-	# Something went wrong while trying to establish the connection. Clean
-	# up after events and such, but DON'T call the command callback (if
-	# available) because we're going to throw an exception from here
-	# instead.
-	Finish $token "" 1
-	cleanup $token
-	return -code error $s
+    if {![info exists phost]} {
+	set phost ""
     }
-    set state(sock) $s
+    fileevent $sock writable [list http::Connect $token $proto $phost $srvurl]
 
     # Wait for the connection to complete.
-
-    if {$state(-timeout) > 0} {
-	fileevent $s writable [list http::Connect $token]
+    if {![info exists state(-command)]} {
+	# geturl does EVERYTHING asynchronously, so if the user
+	# calls it synchronously, we just do a wait here.
 	http::wait $token
 
 	if {![info exists state]} {
 	    # If we timed out then Finish has been called and the users
-	    # command callback may have cleaned up the token. If so
-	    # we end up here with nothing left to do.
+	    # command callback may have cleaned up the token. If so we end up
+	    # here with nothing left to do.
 	    return $token
-	} else {
-	    if {$state(status) eq "error"} {
-		# Something went wrong while trying to establish the connection.
-		# Clean up after events and such, but DON'T call the command
-		# callback (if available) because we're going to throw an
-		# exception from here instead.
-		set err [lindex $state(error) 0]
-		cleanup $token
-		return -code error $err
-	    } elseif {$state(status) ne "connect"} {
-		# Likely to be connection timeout
-		return $token
-	    }
-	    set state(status) ""
+	} elseif {$state(status) eq "error"} {
+	    # Something went wrong while trying to establish the connection.
+	    # Clean up after events and such, but DON'T call the command
+	    # callback (if available) because we're going to throw an
+	    # exception from here instead.
+	    set err [lindex $state(error) 0]
+	    cleanup $token
+	    return -code error $err
 	}
     }
 
+    return $token
+}
+
+
+proc http::Connected { token proto phost srvurl} {
+    variable http
+    variable urlTypes
+
+    variable $token
+    upvar 0 $token state
+
+    # Set back the variables needed here
+    set sock $state(sock)
+    set isQueryChannel [info exists state(-querychannel)]
+    set isQuery [info exists state(-query)]
+    set host [lindex [split $state(socketinfo) :] 0]
+    set port [lindex [split $state(socketinfo) :] 1]
+
+    set defport [lindex $urlTypes($proto) 0]
+
     # Send data in cr-lf format, but accept any line terminators
 
-    fconfigure $s -translation {auto crlf} -buffersize $state(-blocksize)
+    fconfigure $sock -translation {auto crlf} -buffersize $state(-blocksize)
 
     # The following is disallowed in safe interpreters, but the socket is
     # already in non-blocking mode in that case.
 
-    catch {fconfigure $s -blocking off}
+    catch {fconfigure $sock -blocking off}
     set how GET
     if {$isQuery} {
 	set state(querylength) [string length $state(-query)]
@@ -530,29 +662,66 @@ proc http::geturl { url args } {
 	fconfigure $state(-querychannel) -blocking 1 -translation binary
 	set contDone 0
     }
+    if {[info exists state(-method)] && $state(-method) ne ""} {
+	set how $state(-method)
+    }
 
     if {[catch {
-	puts $s "$how $srvurl HTTP/1.0"
-	puts $s "Accept: $http(-accept)"
-	if {$port == $defport} {
+	puts $sock "$how $srvurl HTTP/$state(-protocol)"
+	puts $sock "Accept: $http(-accept)"
+	array set hdrs $state(-headers)
+	if {[info exists hdrs(Host)]} {
+	    # Allow Host spoofing. [Bug 928154]
+	    puts $sock "Host: $hdrs(Host)"
+	} elseif {$port == $defport} {
 	    # Don't add port in this case, to handle broken servers. [Bug
-	    # 504508]
-	    puts $s "Host: $host"
+	    # #504508]
+	    puts $sock "Host: $host"
 	} else {
-	    puts $s "Host: $host:$port"
+	    puts $sock "Host: $host:$port"
 	}
-	puts $s "User-Agent: $http(-useragent)"
+	unset hdrs
+	puts $sock "User-Agent: $http(-useragent)"
+        if {$state(-protocol) == 1.0 && $state(-keepalive)} {
+	    puts $sock "Connection: keep-alive"
+        }
+        if {$state(-protocol) > 1.0 && !$state(-keepalive)} {
+	    puts $sock "Connection: close" ;# RFC2616 sec 8.1.2.1
+        }
+        if {[info exists phost] && ($phost ne "") && $state(-keepalive)} {
+	    puts $sock "Proxy-Connection: Keep-Alive"
+        }
+        set accept_encoding_seen 0
+	set content_type_seen 0
 	foreach {key value} $state(-headers) {
+	    if {[string equal -nocase $key "host"]} {
+		continue
+	    }
+	    if {[string equal -nocase $key "accept-encoding"]} {
+		set accept_encoding_seen 1
+	    }
+	    if {[string equal -nocase $key "content-type"]} {
+		set content_type_seen 1
+	    }
 	    set value [string map [list \n "" \r ""] $value]
 	    set key [string trim $key]
-	    if {$key eq "Content-Length"} {
+	    if {[string equal -nocase $key "content-length"]} {
 		set contDone 1
 		set state(querylength) $value
 	    }
 	    if {[string length $key]} {
-		puts $s "$key: $value"
+		puts $sock "$key: $value"
 	    }
 	}
+	# Soft zlib dependency check - no package require
+        if {
+	    !$accept_encoding_seen &&
+	    ([package vsatisfies [package provide Tcl] 8.6]
+		|| [llength [package provide zlib]]) &&
+	    !([info exists state(-channel)] || [info exists state(-handler)])
+        } then {
+	    puts $sock "Accept-Encoding: gzip, identity, *;q=0.1"
+        }
 	if {$isQueryChannel && $state(querylength) == 0} {
 	    # Try to determine size of data in channel. If we cannot seek, the
 	    # surrounding catch will trap us
@@ -572,57 +741,42 @@ proc http::geturl { url args } {
 	# It is possible to have both the read and write fileevents active at
 	# this point. The only scenario it seems to affect is a server that
 	# closes the connection without reading the POST data. (e.g., early
-	# versions TclHttpd in various error cases). Depending on the platform,
-	# the client may or may not be able to get the response from the server
-	# because of the error it will get trying to write the post data.
-	# Having both fileevents active changes the timing and the behavior,
-	# but no two platforms (among Solaris, Linux, and NT) behave the same,
-	# and none behave all that well in any case. Servers should always read
-	# their POST data if they expect the client to read their response.
+	# versions TclHttpd in various error cases). Depending on the
+	# platform, the client may or may not be able to get the response from
+	# the server because of the error it will get trying to write the post
+	# data.  Having both fileevents active changes the timing and the
+	# behavior, but no two platforms (among Solaris, Linux, and NT) behave
+	# the same, and none behave all that well in any case. Servers should
+	# always read their POST data if they expect the client to read their
+	# response.
 
 	if {$isQuery || $isQueryChannel} {
-	    puts $s "Content-Type: $state(-type)"
+	    if {!$content_type_seen} {
+		puts $sock "Content-Type: $state(-type)"
+	    }
 	    if {!$contDone} {
-		puts $s "Content-Length: $state(querylength)"
+		puts $sock "Content-Length: $state(querylength)"
 	    }
-	    puts $s ""
-	    fconfigure $s -translation {auto binary}
-	    fileevent $s writable [list http::Write $token]
+	    puts $sock ""
+	    fconfigure $sock -translation {auto binary}
+	    fileevent $sock writable [list http::Write $token]
 	} else {
-	    puts $s ""
-	    flush $s
-	    fileevent $s readable [list http::Event $token]
+	    puts $sock ""
+	    flush $sock
+	    fileevent $sock readable [list http::Event $sock $token]
 	}
 
-	if {! [info exists state(-command)]} {
-	    # geturl does EVERYTHING asynchronously, so if the user calls it
-	    # synchronously, we just do a wait here.
-
-	    wait $token
-	    if {$state(status) eq "error"} {
-		# Something went wrong, so throw the exception, and the
-		# enclosing catch will do cleanup.
-		return -code error [lindex $state(error) 0]
-	    }
-	}
-    } err]} {
+    } err]} then {
 	# The socket probably was never connected, or the connection dropped
 	# later.
 
-	# Clean up after events and such, but DON'T call the command callback
-	# (if available) because we're going to throw an exception from here
-	# instead.
-
 	# if state(status) is error, it means someone's already called Finish
 	# to do the above-described clean up.
 	if {$state(status) ne "error"} {
-	    Finish $token $err 1
+	    Finish $token $err
 	}
-	cleanup $token
-	return -code error $err
     }
 
-    return $token
 }
 
 # Data access functions:
@@ -637,7 +791,9 @@ proc http::data {token} {
     return $state(body)
 }
 proc http::status {token} {
-    if {![info exists $token]} { return "error" }    
+    if {![info exists $token]} {
+	return "error"
+    }
     variable $token
     upvar 0 $token state
     return $state(status)
@@ -704,16 +860,18 @@ proc http::cleanup {token} {
 #	Sets the status of the connection, which unblocks
 # 	the waiting geturl call
 
-proc http::Connect {token} {
+proc http::Connect {token proto phost srvurl} {
     variable $token
     upvar 0 $token state
     set err "due to unexpected EOF"
-    if {[eof $state(sock)] ||
-	    [string length [set err [fconfigure $state(sock) -error]]]} {
-	Finish $token "connect failed $err" 1
+    if {
+	[eof $state(sock)] ||
+	[set err [fconfigure $state(sock) -error]] ne ""
+    } then {
+	Finish $token "connect failed $err"
     } else {
-	set state(status) connect
 	fileevent $state(sock) writable {}
+	::http::Connected $token $proto $phost $srvurl
     }
     return
 }
@@ -731,7 +889,7 @@ proc http::Connect {token} {
 proc http::Write {token} {
     variable $token
     upvar 0 $token state
-    set s $state(sock)
+    set sock $state(sock)
 
     # Output a block.  Tcl will buffer this if the socket blocks
     set done 0
@@ -742,9 +900,9 @@ proc http::Write {token} {
 	    # Chop up large query strings so queryprogress callback can give
 	    # smooth feedback.
 
-	    puts -nonewline $s \
-		    [string range $state(-query) $state(queryoffset) \
-		    [expr {$state(queryoffset) + $state(-queryblocksize) - 1}]]
+	    puts -nonewline $sock \
+		[string range $state(-query) $state(queryoffset) \
+		     [expr {$state(queryoffset) + $state(-queryblocksize) - 1}]]
 	    incr state(queryoffset) $state(-queryblocksize)
 	    if {$state(queryoffset) >= $state(querylength)} {
 		set state(queryoffset) $state(querylength)
@@ -754,13 +912,13 @@ proc http::Write {token} {
 	    # Copy blocks from the query channel
 
 	    set outStr [read $state(-querychannel) $state(-queryblocksize)]
-	    puts -nonewline $s $outStr
+	    puts -nonewline $sock $outStr
 	    incr state(queryoffset) [string length $outStr]
 	    if {[eof $state(-querychannel)]} {
 		set done 1
 	    }
 	}
-    } err]} {
+    } err]} then {
 	# Do not call Finish here, but instead let the read half of the socket
 	# process whatever server reply there is to get.
 
@@ -768,16 +926,16 @@ proc http::Write {token} {
 	set done 1
     }
     if {$done} {
-	catch {flush $s}
-	fileevent $s writable {}
-	fileevent $s readable [list http::Event $token]
+	catch {flush $sock}
+	fileevent $sock writable {}
+	fileevent $sock readable [list http::Event $sock $token]
     }
 
     # Callback to the client after we've completely handled everything.
 
     if {[string length $state(-queryprogress)]} {
-	eval $state(-queryprogress) [list $token $state(querylength)\
-		$state(queryoffset)]
+	eval $state(-queryprogress) \
+	    [list $token $state(querylength) $state(queryoffset)]
     }
 }
 
@@ -786,114 +944,248 @@ proc http::Write {token} {
 #	Handle input on the socket
 #
 # Arguments
+#	sock	The socket receiving input.
 #	token	The token returned from http::geturl
 #
 # Side Effects
 #	Read the socket and handle callbacks.
 
-proc http::Event {token} {
+proc http::Event {sock token} {
     variable $token
     upvar 0 $token state
-    set s $state(sock)
 
-    if {$state(state) eq "header"} {
-	if {[catch {gets $s line} n]} {
+    if {![info exists state]} {
+	Log "Event $sock with invalid token '$token' - remote close?"
+	if {![eof $sock]} {
+	    if {[set d [read $sock]] ne ""} {
+		Log "WARNING: additional data left on closed socket"
+	    }
+	}
+	CloseSocket $sock
+	return
+    }
+    if {$state(state) eq "connecting"} {
+	if {[catch {gets $sock state(http)} n]} {
+	    return [Finish $token $n]
+	} elseif {$n >= 0} {
+	    set state(state) "header"
+	}
+    } elseif {$state(state) eq "header"} {
+	if {[catch {gets $sock line} n]} {
 	    return [Finish $token $n]
 	} elseif {$n == 0} {
-	    variable encodings
+	    # We have now read all headers
+	    # We ignore HTTP/1.1 100 Continue returns. RFC2616 sec 8.2.3
+	    if {$state(http) == "" || ([regexp {^\S+\s(\d+)} $state(http) {} x] && $x == 100)} {
+		return
+	    }
+
 	    set state(state) body
-	    if {$state(-binary) || ![string match -nocase text* $state(type)]
-		    || [string match *gzip* $state(coding)]
-		    || [string match *compress* $state(coding)]} {
+
+	    # If doing a HEAD, then we won't get any body
+	    if {$state(-validate)} {
+		Eof $token
+		return
+	    }
+
+	    # For non-chunked transfer we may have no body - in this case we
+	    # may get no further file event if the connection doesn't close
+	    # and no more data is sent. We can tell and must finish up now -
+	    # not later.
+	    if {
+		!(([info exists state(connection)]
+			&& ($state(connection) eq "close"))
+		    || [info exists state(transfer)])
+		&& ($state(totalsize) == 0)
+	    } then {
+		Log "body size is 0 and no events likely - complete."
+		Eof $token
+		return
+	    }
+
+	    # We have to use binary translation to count bytes properly.
+	    fconfigure $sock -translation binary
+
+	    if {
+		$state(-binary) || ![string match -nocase text* $state(type)]
+	    } then {
 		# Turn off conversions for non-text data
-		fconfigure $s -translation binary
+		set state(binary) 1
+	    }
+	    if {
+		$state(binary) || [string match *gzip* $state(coding)] ||
+		[string match *compress* $state(coding)]
+	    } then {
 		if {[info exists state(-channel)]} {
 		    fconfigure $state(-channel) -translation binary
 		}
-	    } else {
-		# If we are getting text, set the incoming channel's encoding
-		# correctly. iso8859-1 is the RFC default, but this could be
-		# any IANA charset. However, we only know how to convert what
-		# we have encodings for.
-		set idx [lsearch -exact $encodings \
-			[string tolower $state(charset)]]
-		if {$idx >= 0} {
-		    fconfigure $s -encoding [lindex $encodings $idx]
-		}
 	    }
-	    if {[info exists state(-channel)] && \
-		    ![info exists state(-handler)]} {
+	    if {
+		[info exists state(-channel)] &&
+		![info exists state(-handler)]
+	    } then {
 		# Initiate a sequence of background fcopies
-		fileevent $s readable {}
-		CopyStart $s $token
+		fileevent $sock readable {}
+		CopyStart $sock $token
 		return
 	    }
 	} elseif {$n > 0} {
-	    if {[regexp -nocase {^content-type:(.+)$} $line x type]} {
-		set state(type) [string trim $type]
-		# grab the optional charset information
-		regexp -nocase {charset\s*=\s*(\S+)} $type x state(charset)
-	    }
-	    if {[regexp -nocase {^content-length:(.+)$} $line x length]} {
-		set state(totalsize) [string trim $length]
-	    }
-	    if {[regexp -nocase {^content-encoding:(.+)$} $line x coding]} {
-		set state(coding) [string trim $coding]
-	    }
+	    # Process header lines
 	    if {[regexp -nocase {^([^:]+):(.+)$} $line x key value]} {
+		switch -- [string tolower $key] {
+		    content-type {
+			set state(type) [string trim [string tolower $value]]
+			# grab the optional charset information
+			if {[regexp -nocase \
+				 {charset\s*=\s*\"((?:[^""]|\\\")*)\"} \
+				 $state(type) -> cs]} {
+			    set state(charset) [string map {{\"} \"} $cs]
+			} else {
+			    regexp -nocase {charset\s*=\s*(\S+?);?} \
+				$state(type) -> state(charset)
+			}
+		    }
+		    content-length {
+			set state(totalsize) [string trim $value]
+		    }
+		    content-encoding {
+			set state(coding) [string trim $value]
+		    }
+		    transfer-encoding {
+			set state(transfer) \
+			    [string trim [string tolower $value]]
+		    }
+		    proxy-connection -
+		    connection {
+			set state(connection) \
+			    [string trim [string tolower $value]]
+		    }
+		}
 		lappend state(meta) $key [string trim $value]
-	    } elseif {[string match HTTP* $line]} {
-		set state(http) $line
 	    }
 	}
     } else {
+	# Now reading body
 	if {[catch {
 	    if {[info exists state(-handler)]} {
-		set n [eval $state(-handler) {$s $token}]
+		set n [eval $state(-handler) [list $sock $token]]
+	    } elseif {[info exists state(transfer_final)]} {
+		set line [getTextLine $sock]
+		set n [string length $line]
+		if {$n > 0} {
+		    Log "found $n bytes following final chunk"
+		    append state(transfer_final) $line
+		} else {
+		    Log "final chunk part"
+		    Eof $token
+		}
+	    } elseif {
+		[info exists state(transfer)]
+		&& $state(transfer) eq "chunked"
+	    } then {
+		set size 0
+		set chunk [getTextLine $sock]
+		set n [string length $chunk]
+		if {[string trim $chunk] ne ""} {
+		    scan $chunk %x size
+		    if {$size != 0} {
+			set bl [fconfigure $sock -blocking]
+			fconfigure $sock -blocking 1
+			set chunk [read $sock $size]
+			fconfigure $sock -blocking $bl
+			set n [string length $chunk]
+			if {$n >= 0} {
+			    append state(body) $chunk
+			}
+			if {$size != [string length $chunk]} {
+			    Log "WARNING: mis-sized chunk:\
+				was [string length $chunk], should be $size"
+			}
+			getTextLine $sock
+		    } else {
+			set state(transfer_final) {}
+		    }
+		}
 	    } else {
-		set block [read $s $state(-blocksize)]
+		#Log "read non-chunk $state(currentsize) of $state(totalsize)"
+		set block [read $sock $state(-blocksize)]
 		set n [string length $block]
 		if {$n >= 0} {
 		    append state(body) $block
 		}
 	    }
-	    if {$n >= 0} {
-		incr state(currentsize) $n
+	    if {[info exists state]} {
+		if {$n >= 0} {
+		    incr state(currentsize) $n
+		}
+		# If Content-Length - check for end of data.
+		if {
+		    ($state(totalsize) > 0)
+		    && ($state(currentsize) >= $state(totalsize))
+		} then {
+		    Eof $token
+		}
 	    }
-	} err]} {
+	} err]} then {
 	    return [Finish $token $err]
 	} else {
 	    if {[info exists state(-progress)]} {
 		eval $state(-progress) \
-			{$token $state(totalsize) $state(currentsize)}
+		    [list $token $state(totalsize) $state(currentsize)]
 	    }
 	}
     }
 
-    if {[eof $s]} {
-	Eof $token
+    # catch as an Eof above may have closed the socket already
+    if {![catch {eof $sock} eof] && $eof} {
+	if {[info exists $token]} {
+	    set state(connection) close
+	    Eof $token
+	} else {
+	    # open connection closed on a token that has been cleaned up.
+	    CloseSocket $sock
+	}
 	return
     }
 }
 
+# http::getTextLine --
+#
+#	Get one line with the stream in blocking crlf mode
+#
+# Arguments
+#	sock	The socket receiving input.
+#
+# Results:
+#	The line of text, without trailing newline
+
+proc http::getTextLine {sock} {
+    set tr [fconfigure $sock -translation]
+    set bl [fconfigure $sock -blocking]
+    fconfigure $sock -translation crlf -blocking 1
+    set r [gets $sock]
+    fconfigure $sock -translation $tr -blocking $bl
+    return $r
+}
+
 # http::CopyStart
 #
 #	Error handling wrapper around fcopy
 #
 # Arguments
-#	s	The socket to copy from
+#	sock	The socket to copy from
 #	token	The token returned from http::geturl
 #
 # Side Effects
 #	This closes the connection upon error
 
-proc http::CopyStart {s token} {
+proc http::CopyStart {sock token} {
     variable $token
     upvar 0 $token state
     if {[catch {
-	fcopy $s $state(-channel) -size $state(-blocksize) -command \
+	fcopy $sock $state(-channel) -size $state(-blocksize) -command \
 	    [list http::CopyDone $token]
-    } err]} {
+    } err]} then {
 	Finish $token $err
     }
 }
@@ -912,18 +1204,19 @@ proc http::CopyStart {s token} {
 proc http::CopyDone {token count {error {}}} {
     variable $token
     upvar 0 $token state
-    set s $state(sock)
+    set sock $state(sock)
     incr state(currentsize) $count
     if {[info exists state(-progress)]} {
-	eval $state(-progress) {$token $state(totalsize) $state(currentsize)}
+	eval $state(-progress) \
+	    [list $token $state(totalsize) $state(currentsize)]
     }
     # At this point the token may have been reset
     if {[string length $error]} {
 	Finish $token $error
-    } elseif {[catch {eof $s} iseof] || $iseof} {
+    } elseif {[catch {eof $sock} iseof] || $iseof} {
 	Eof $token
     } else {
-	CopyStart $s $token
+	CopyStart $sock $token
     }
 }
 
@@ -937,7 +1230,7 @@ proc http::CopyDone {token count {error {}}} {
 # Side Effects
 #	Clean up the socket
 
-proc http::Eof {token} {
+proc http::Eof {token {force 0}} {
     variable $token
     upvar 0 $token state
     if {$state(state) eq "header"} {
@@ -946,7 +1239,35 @@ proc http::Eof {token} {
     } else {
 	set state(status) ok
     }
-    set state(state) eof
+
+    if {($state(coding) eq "gzip") && [string length $state(body)] > 0} {
+        if {[catch {
+	    if {[package vsatisfies [package present Tcl] 8.6]} {
+		# The zlib integration into 8.6 includes proper gzip support
+		set state(body) [zlib gunzip $state(body)]
+	    } else {
+		set state(body) [Gunzip $state(body)]
+	    }
+        } err]} then {
+	    return [Finish $token $err]
+        }
+    }
+
+    if {!$state(binary)} {
+        # If we are getting text, set the incoming channel's encoding
+        # correctly.  iso8859-1 is the RFC default, but this could be any IANA
+        # charset.  However, we only know how to convert what we have
+        # encodings for.
+
+        set enc [CharsetToEncoding $state(charset)]
+        if {$enc ne "binary"} {
+	    set state(body) [encoding convertfrom $enc $state(body)]
+        }
+
+        # Translate text line endings.
+        set state(body) [string map {\r\n \n \r \n} $state(body)]
+    }
+
     Finish $token
 }
 
@@ -964,9 +1285,9 @@ proc http::wait {token} {
     variable $token
     upvar 0 $token state
 
-    if {![info exists state(status)] || [string length $state(status)] == 0} {
+    if {![info exists state(status)] || $state(status) eq ""} {
 	# We must wait on the original variable name, not the upvar alias
-	vwait $token\(status)
+	vwait ${token}(status)
     }
 
     return [status $token]
@@ -974,7 +1295,7 @@ proc http::wait {token} {
 
 # http::formatQuery --
 #
-#	See documentation for details. Call http::formatQuery with an even
+#	See documentation for details.  Call http::formatQuery with an even
 #	number of arguments, where the first is a name, the second is a value,
 #	the third is another name, and so on.
 #
@@ -1042,14 +1363,110 @@ proc http::mapReply {string} {
 proc http::ProxyRequired {host} {
     variable http
     if {[info exists http(-proxyhost)] && [string length $http(-proxyhost)]} {
-	if {![info exists http(-proxyport)] || \
-		![string length $http(-proxyport)]} {
+	if {
+	    ![info exists http(-proxyport)] ||
+	    ![string length $http(-proxyport)]
+	} then {
 	    set http(-proxyport) 8080
 	}
 	return [list $http(-proxyhost) $http(-proxyport)]
     }
 }
 
+# http::CharsetToEncoding --
+#
+#	Tries to map a given IANA charset to a tcl encoding.  If no encoding
+#	can be found, returns binary.
+#
+
+proc http::CharsetToEncoding {charset} {
+    variable encodings
+
+    set charset [string tolower $charset]
+    if {[regexp {iso-?8859-([0-9]+)} $charset -> num]} {
+	set encoding "iso8859-$num"
+    } elseif {[regexp {iso-?2022-(jp|kr)} $charset -> ext]} {
+	set encoding "iso2022-$ext"
+    } elseif {[regexp {shift[-_]?js} $charset]} {
+	set encoding "shiftjis"
+    } elseif {[regexp {(?:windows|cp)-?([0-9]+)} $charset -> num]} {
+	set encoding "cp$num"
+    } elseif {$charset eq "us-ascii"} {
+	set encoding "ascii"
+    } elseif {[regexp {(?:iso-?)?lat(?:in)?-?([0-9]+)} $charset -> num]} {
+	switch -- $num {
+	    5 {set encoding "iso8859-9"}
+	    1 - 2 - 3 {
+		set encoding "iso8859-$num"
+	    }
+	}
+    } else {
+	# other charset, like euc-xx, utf-8,...  may directly map to encoding
+	set encoding $charset
+    }
+    set idx [lsearch -exact $encodings $encoding]
+    if {$idx >= 0} {
+	return $encoding
+    } else {
+	return "binary"
+    }
+}
+
+# http::Gunzip --
+#
+#	Decompress data transmitted using the gzip transfer coding.
+#
+
+# FIX ME: redo using zlib sinflate
+proc http::Gunzip {data} {
+    binary scan $data Scb5icc magic method flags time xfl os
+    set pos 10
+    if {$magic != 0x1f8b} {
+        return -code error "invalid data: supplied data is not in gzip format"
+    }
+    if {$method != 8} {
+        return -code error "invalid compression method"
+    }
+
+    # lassign [split $flags ""] f_text f_crc f_extra f_name f_comment
+    foreach {f_text f_crc f_extra f_name f_comment} [split $flags ""] break
+    set extra ""
+    if {$f_extra} {
+	binary scan $data @${pos}S xlen
+        incr pos 2
+        set extra [string range $data $pos $xlen]
+        set pos [incr xlen]
+    }
+
+    set name ""
+    if {$f_name} {
+        set ndx [string first \0 $data $pos]
+        set name [string range $data $pos $ndx]
+        set pos [incr ndx]
+    }
+
+    set comment ""
+    if {$f_comment} {
+        set ndx [string first \0 $data $pos]
+        set comment [string range $data $pos $ndx]
+        set pos [incr ndx]
+    }
+
+    set fcrc ""
+    if {$f_crc} {
+	set fcrc [string range $data $pos [incr pos]]
+        incr pos
+    }
+
+    binary scan [string range $data end-7 end] ii crc size
+    set inflated [zlib inflate [string range $data $pos end-8]]
+    set chk [zlib crc32 $inflated]
+    if {($crc & 0xffffffff) != ($chk & 0xffffffff)} {
+	return -code error "invalid data: checksum mismatch $crc != $chk"
+    }
+    return $inflated
+}
+
 # Local variables:
 # indent-tabs-mode: t
 # End:
diff --git a/library/http/pkgIndex.tcl b/library/http/pkgIndex.tcl
index c5d2928..73b2f36 100644
--- a/library/http/pkgIndex.tcl
+++ b/library/http/pkgIndex.tcl
@@ -1,12 +1,4 @@
 # Tcl package index file, version 1.1
-# This file is generated by the "pkg_mkIndex" command
-# and sourced either when an application starts up or
-# by a "package unknown" script.  It invokes the
-# "package ifneeded" command to set up package-related
-# information so that packages will be loaded automatically
-# in response to "package require" commands.  When this
-# script is sourced, the variable $dir must contain the
-# full path name of this file's directory.
 
 if {![package vsatisfies [package provide Tcl] 8.4]} {return}
-package ifneeded http 2.5.7 [list tclPkgSetup $dir http 2.5.7 {{http.tcl source {::http::config ::http::formatQuery ::http::geturl ::http::reset ::http::wait ::http::register ::http::unregister ::http::mapReply}}}]
+package ifneeded http 2.7.11 [list tclPkgSetup $dir http 2.7.11 {{http.tcl source {::http::config ::http::formatQuery ::http::geturl ::http::reset ::http::wait ::http::register ::http::unregister ::http::mapReply}}}]
diff --git a/library/init.tcl b/library/init.tcl
index cd02549..21e0370 100644
--- a/library/init.tcl
+++ b/library/init.tcl
@@ -6,15 +6,17 @@
 # Copyright (c) 1991-1993 The Regents of the University of California.
 # Copyright (c) 1994-1996 Sun Microsystems, Inc.
 # Copyright (c) 1998-1999 Scriptics Corporation.
+# Copyright (c) 2004 by Kevin B. Kenny.  All rights reserved.
 #
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
 
+# This test intentionally written in pre-7.5 Tcl 
 if {[info commands package] == ""} {
     error "version mismatch: library\nscripts expect Tcl version 7.5b1 or later but the loaded version is\nonly [info patchlevel]"
 }
-package require -exact Tcl 8.4
+package require -exact Tcl 8.5.13
 
 # Compute the auto path to use in this interpreter.
 # The values on the path come from several locations:
@@ -22,7 +24,7 @@ package require -exact Tcl 8.4
 # The environment variable TCLLIBPATH
 #
 # tcl_library, which is the directory containing this init.tcl script.
-# tclInitScript.h searches around for the directory containing this
+# [tclInit] (Tcl_Init()) searches around for the directory containing this
 # init.tcl and defines tcl_library to that location before sourcing it.
 #
 # The parent directory of tcl_library. Adding the parent
@@ -45,35 +47,80 @@ if {![info exists auto_path]} {
 }
 namespace eval tcl {
     variable Dir
-    if {[info library] ne ""} {
-	foreach Dir [list [info library] [file dirname [info library]]] {
-	    if {[lsearch -exact $::auto_path $Dir] < 0} {
-		lappend ::auto_path $Dir
-	    }
+    foreach Dir [list $::tcl_library [file dirname $::tcl_library]] {
+	if {$Dir ni $::auto_path} {
+	    lappend ::auto_path $Dir
 	}
     }
     set Dir [file join [file dirname [file dirname \
 	    [info nameofexecutable]]] lib]
-    if {[lsearch -exact $::auto_path $Dir] < 0} {
+    if {$Dir ni $::auto_path} {
 	lappend ::auto_path $Dir
     }
-    if {[info exists ::tcl_pkgPath]} {
+    catch {
 	foreach Dir $::tcl_pkgPath {
-	    if {[lsearch -exact $::auto_path $Dir] < 0} {
+	    if {$Dir ni $::auto_path} {
 		lappend ::auto_path $Dir
 	    }
 	}
     }
+
+    if {![interp issafe]} {
+        variable Path [encoding dirs]
+        set Dir [file join $::tcl_library encoding]
+        if {$Dir ni $Path} {
+	    lappend Path $Dir
+	    encoding dirs $Path
+        }
+    }
+
+    # TIP #255 min and max functions
+    namespace eval mathfunc {
+	proc min {args} {
+	    if {[llength $args] == 0} {
+		return -code error \
+		    "too few arguments to math function \"min\""
+	    }
+	    set val Inf
+	    foreach arg $args {
+		# This will handle forcing the numeric value without
+		# ruining the internal type of a numeric object
+		if {[catch {expr {double($arg)}} err]} {
+		    return -code error $err
+		}
+		if {$arg < $val} { set val $arg }
+	    }
+	    return $val
+	}
+	proc max {args} {
+	    if {[llength $args] == 0} {
+		return -code error \
+		    "too few arguments to math function \"max\""
+	    }
+	    set val -Inf
+	    foreach arg $args {
+		# This will handle forcing the numeric value without
+		# ruining the internal type of a numeric object
+		if {[catch {expr {double($arg)}} err]} {
+		    return -code error $err
+		}
+		if {$arg > $val} { set val $arg }
+	    }
+	    return $val
+	}
+	namespace export min max
+    }
 }
-  
+
 # Windows specific end of initialization
 
-if {(![interp issafe]) && $tcl_platform(platform) eq "windows"} {
+if {(![interp issafe]) && ($tcl_platform(platform) eq "windows")} {
     namespace eval tcl {
 	proc EnvTraceProc {lo n1 n2 op} {
-	    set x $::env($n2)
-	    set ::env($lo) $x
-	    set ::env([string toupper $lo]) $x
+	    global env
+	    set x $env($n2)
+	    set env($lo) $x
+	    set env([string toupper $lo]) $x
 	}
 	proc InitWinEnv {} {
 	    global env tcl_platform
@@ -108,23 +155,54 @@ if {(![interp issafe]) && $tcl_platform(platform) eq "windows"} {
 
 # Setup the unknown package handler
 
-package unknown tclPkgUnknown
 
-if {![interp issafe]} {
-    # setup platform specific unknown package handlers
-    if {$::tcl_platform(platform) eq "unix"
-	    && $::tcl_platform(os) eq "Darwin"} {
-	package unknown [list tcl::MacOSXPkgUnknown [package unknown]]
+if {[interp issafe]} {
+    package unknown {::tcl::tm::UnknownHandler ::tclPkgUnknown}
+} else {
+    # Set up search for Tcl Modules (TIP #189).
+    # and setup platform specific unknown package handlers
+    if {$tcl_platform(os) eq "Darwin"
+	    && $tcl_platform(platform) eq "unix"} {
+	package unknown {::tcl::tm::UnknownHandler \
+		{::tcl::MacOSXPkgUnknown ::tclPkgUnknown}}
+    } else {
+	package unknown {::tcl::tm::UnknownHandler ::tclPkgUnknown}
+    }
+
+    # Set up the 'clock' ensemble
+
+    namespace eval ::tcl::clock [list variable TclLibDir $::tcl_library]
+
+    proc clock args {
+	namespace eval ::tcl::clock [list namespace ensemble create -command \
+		[uplevel 1 [list namespace origin [lindex [info level 0] 0]]] \
+		-subcommands {
+		    add clicks format microseconds milliseconds scan seconds
+		}]
+	
+	# Auto-loading stubs for 'clock.tcl'
+	
+	foreach cmd {add format scan} {
+	    proc ::tcl::clock::$cmd args {
+		variable TclLibDir
+		source -encoding utf-8 [file join $TclLibDir clock.tcl]
+		return [uplevel 1 [info level 0]]
+	    }
+	}
+
+	return [uplevel 1 [info level 0]]
     }
 }
 
 # Conditionalize for presence of exec.
 
 if {[namespace which -command exec] eq ""} {
+
+    # Some machines do not have exec. Also, on all
+    # platforms, safe interpreters do not have exec.
+
     set auto_noexec 1
 }
-set errorCode ""
-set errorInfo ""
 
 # Define a log command (which can be overwitten to log errors
 # differently, specially when stderr is not available)
@@ -158,72 +236,74 @@ if {[namespace which -command tclLog] eq ""} {
 #		command, including the command name.
 
 proc unknown args {
-    global auto_noexec auto_noload env unknown_pending tcl_interactive
-    global errorCode errorInfo
+    variable ::tcl::UnknownPending
+    global auto_noexec auto_noload env tcl_interactive errorInfo errorCode
 
     # If the command word has the form "namespace inscope ns cmd"
     # then concatenate its arguments onto the end and evaluate it.
 
     set cmd [lindex $args 0]
     if {[regexp "^:*namespace\[ \t\n\]+inscope" $cmd] && [llength $cmd] == 4} {
+	#return -code error "You need an {*}"
         set arglist [lrange $args 1 end]
-	set ret [catch {uplevel 1 ::$cmd $arglist} result]
-        if {$ret == 0} {
-            return $result
-        } else {
-	    return -code $ret -errorcode $errorCode $result
-        }
+	set ret [catch {uplevel 1 ::$cmd $arglist} result opts]
+	dict unset opts -errorinfo
+	dict incr opts -level
+	return -options $opts $result
     }
 
-    # Save the values of errorCode and errorInfo variables, since they
-    # may get modified if caught errors occur below.  The variables will
-    # be restored just before re-executing the missing command.
-
-    # Safety check in case something unsets the variables 
-    # ::errorInfo or ::errorCode.  [Bug 1063707]
-    if {![info exists errorCode]} {
-	set errorCode ""
-    }
-    if {![info exists errorInfo]} {
-	set errorInfo ""
-    }
-    set savedErrorCode $errorCode
-    set savedErrorInfo $errorInfo
+    catch {set savedErrorInfo $errorInfo}
+    catch {set savedErrorCode $errorCode}
     set name $cmd
     if {![info exists auto_noload]} {
 	#
 	# Make sure we're not trying to load the same proc twice.
 	#
-	if {[info exists unknown_pending($name)]} {
-	    return -code error "self-referential recursion in \"unknown\" for command \"$name\"";
-	}
-	set unknown_pending($name) pending;
-	set ret [catch {auto_load $name [uplevel 1 {::namespace current}]} msg]
-	unset unknown_pending($name);
+	if {[info exists UnknownPending($name)]} {
+	    return -code error "self-referential recursion\
+		    in \"unknown\" for command \"$name\"";
+	}
+	set UnknownPending($name) pending;
+	set ret [catch {
+		auto_load $name [uplevel 1 {::namespace current}]
+	} msg opts]
+	unset UnknownPending($name);
 	if {$ret != 0} {
-	    append errorInfo "\n    (autoloading \"$name\")"
-	    return -code $ret -errorcode $errorCode -errorinfo $errorInfo $msg
+	    dict append opts -errorinfo "\n    (autoloading \"$name\")"
+	    return -options $opts $msg
 	}
-	if {![array size unknown_pending]} {
-	    unset unknown_pending
+	if {![array size UnknownPending]} {
+	    unset UnknownPending
 	}
 	if {$msg} {
-	    set errorCode $savedErrorCode
-	    set errorInfo $savedErrorInfo
-	    set code [catch {uplevel 1 $args} msg]
+	    if {[info exists savedErrorCode]} {
+		set ::errorCode $savedErrorCode
+	    } else {
+		unset -nocomplain ::errorCode
+	    }
+	    if {[info exists savedErrorInfo]} {
+		set errorInfo $savedErrorInfo
+	    } else {
+		unset -nocomplain errorInfo
+	    }
+	    set code [catch {uplevel 1 $args} msg opts]
 	    if {$code ==  1} {
 		#
 		# Compute stack trace contribution from the [uplevel].
 		# Note the dependence on how Tcl_AddErrorInfo, etc. 
 		# construct the stack trace.
 		#
+		set errInfo [dict get $opts -errorinfo]
+		set errCode [dict get $opts -errorcode]
 		set cinfo $args
-		set ellipsis ""
-		while {[string bytelength $cinfo] > 150} {
-		    set cinfo [string range $cinfo 0 end-1]
-		    set ellipsis "..."
+		if {[string bytelength $cinfo] > 150} {
+		    set cinfo [string range $cinfo 0 150]
+		    while {[string bytelength $cinfo] > 150} {
+			set cinfo [string range $cinfo 0 end-1]
+		    }
+		    append cinfo ...
 		}
-		append cinfo $ellipsis "\"\n    (\"uplevel\" body line 1)"
+		append cinfo "\"\n    (\"uplevel\" body line 1)"
 		append cinfo "\n    invoked from within"
 		append cinfo "\n\"uplevel 1 \$args\""
 		#
@@ -231,12 +311,14 @@ proc unknown args {
 		# and trim the extra contribution from the matching case
 		#
 		set expect "$msg\n    while executing\n\"$cinfo"
-		if {$errorInfo eq $expect} {
+		if {$errInfo eq $expect} {
 		    #
 		    # The stack has only the eval from the expanded command
 		    # Do not generate any stack trace here.
 		    #
-		    return -code error -errorcode $errorCode $msg
+		    dict unset opts -errorinfo
+		    dict incr opts -level
+		    return -options $opts $msg
 		}
 		#
 		# Stack trace is nested, trim off just the contribution
@@ -244,41 +326,42 @@ proc unknown args {
 		#
 		set expect "\n    invoked from within\n\"$cinfo"
 		set exlen [string length $expect]
-		set eilen [string length $errorInfo]
+		set eilen [string length $errInfo]
 		set i [expr {$eilen - $exlen - 1}]
-		set einfo [string range $errorInfo 0 $i]
+		set einfo [string range $errInfo 0 $i]
 		#
-		# For now verify that $errorInfo consists of what we are about
+		# For now verify that $errInfo consists of what we are about
 		# to return plus what we expected to trim off.
 		#
-		if {$errorInfo ne "$einfo$expect"} {
+		if {$errInfo ne "$einfo$expect"} {
 		    error "Tcl bug: unexpected stack trace in \"unknown\"" {} \
-			[list CORE UNKNOWN BADTRACE $expect $errorInfo]
+			[list CORE UNKNOWN BADTRACE $einfo $expect $errInfo]
 		}
-		return -code error -errorcode $errorCode \
+		return -code error -errorcode $errCode \
 			-errorinfo $einfo $msg
 	    } else {
-		return -code $code $msg
+		dict incr opts -level
+		return -options $opts $msg
 	    }
 	}
     }
 
-    if {([info level] == 1) && [info script] eq "" \
+    if {([info level] == 1) && ([info script] eq "") 
 	    && [info exists tcl_interactive] && $tcl_interactive} {
 	if {![info exists auto_noexec]} {
 	    set new [auto_execok $name]
 	    if {$new ne ""} {
-		set errorCode $savedErrorCode
-		set errorInfo $savedErrorInfo
 		set redir ""
 		if {[namespace which -command console] eq ""} {
 		    set redir ">&@stdout <@stdin"
 		}
-		return [uplevel 1 exec $redir $new [lrange $args 1 end]]
+		uplevel 1 [list ::catch \
+			[concat exec $redir $new [lrange $args 1 end]] \
+			::tcl::UnknownResult ::tcl::UnknownOptions]
+		dict incr ::tcl::UnknownOptions -level
+		return -options $::tcl::UnknownOptions $::tcl::UnknownResult
 	    }
 	}
-	set errorCode $savedErrorCode
-	set errorInfo $savedErrorInfo
 	if {$name eq "!!"} {
 	    set newcmd [history event]
 	} elseif {[regexp {^!(.+)$} $name -> event]} {
@@ -290,7 +373,10 @@ proc unknown args {
 	if {[info exists newcmd]} {
 	    tclLog $newcmd
 	    history change $newcmd 0
-	    return [uplevel 1 $newcmd]
+	    uplevel 1 [list ::catch $newcmd \
+		    ::tcl::UnknownResult ::tcl::UnknownOptions]
+	    dict incr ::tcl::UnknownOptions -level
+	    return -options $::tcl::UnknownOptions $::tcl::UnknownResult
 	}
 
 	set ret [catch {set candidates [info commands $name*]} msg]
@@ -298,9 +384,9 @@ proc unknown args {
 	    set name ""
 	}
 	if {$ret != 0} {
-	    return -code $ret -errorcode $errorCode \
-		"error in unknown while checking if \"$name\" is\
-		a unique command abbreviation:\n$msg"
+	    dict append opts -errorinfo \
+		    "\n    (expanding command prefix \"$name\" in unknown)"
+	    return -options $opts $msg
 	}
 	# Filter out bogus matches when $name contained
 	# a glob-special char [Bug 946952]
@@ -317,7 +403,10 @@ proc unknown args {
 	    }
 	}
 	if {[llength $cmds] == 1} {
-	    return [uplevel 1 [lreplace $args 0 0 [lindex $cmds 0]]]
+	    uplevel 1 [list ::catch [lreplace $args 0 0 [lindex $cmds 0]] \
+		    ::tcl::UnknownResult ::tcl::UnknownOptions]
+	    dict incr ::tcl::UnknownOptions -level
+	    return -options $::tcl::UnknownOptions $::tcl::UnknownResult
 	}
 	if {[llength $cmds]} {
 	    return -code error "ambiguous command name \"$name\": [lsort $cmds]"
@@ -339,7 +428,7 @@ proc unknown args {
 #                       for instance. If not given, namespace current is used.
 
 proc auto_load {cmd {namespace {}}} {
-    global auto_index auto_oldpath auto_path
+    global auto_index auto_path
 
     if {$namespace eq ""} {
 	set namespace [uplevel 1 [list ::namespace current]]
@@ -391,9 +480,10 @@ proc auto_load {cmd {namespace {}}} {
 # None.
 
 proc auto_load_index {} {
-    global auto_index auto_oldpath auto_path errorInfo errorCode
+    variable ::tcl::auto_oldpath
+    global auto_index auto_path
 
-    if {[info exists auto_oldpath] && $auto_oldpath eq $auto_path} {
+    if {[info exists auto_oldpath] && ($auto_oldpath eq $auto_path)} {
 	return 0
     }
     set auto_oldpath $auto_path
@@ -416,7 +506,7 @@ proc auto_load_index {} {
 		    eval [read $f]
 		} elseif {$id eq "# Tcl autoload index file: each line identifies a Tcl"} {
 		    while {[gets $f line] >= 0} {
-			if {[string index $line 0] eq "#" 
+			if {([string index $line 0] eq "#") \
 				|| ([llength $line] != 2)} {
 			    continue
 			}
@@ -427,12 +517,12 @@ proc auto_load_index {} {
 		} else {
 		    error "[file join $dir tclIndex] isn't a proper Tcl index file"
 		}
-	    } msg]
+	    } msg opts]
 	    if {$f ne ""} {
 		close $f
 	    }
 	    if {$error} {
-		error $msg $errorInfo $errorCode
+		return -options $opts $msg
 	    }
 	}
     }
@@ -569,10 +659,10 @@ proc auto_execok name {
 	# Add an initial ; to have the {} extension check first.
 	set execExtensions [split ";$env(PATHEXT)" ";"]
     } else {
-	set execExtensions [list {} .com .exe .bat]
+	set execExtensions [list {} .com .exe .bat .cmd]
     }
 
-    if {[lsearch -exact $shellBuiltins [string tolower $name]] != -1} {
+    if {[string tolower $name] in $shellBuiltins} {
 	# When this is command.com for some reason on Win2K, Tcl won't
 	# exec it unless the case is right, which this corrects.  COMSPEC
 	# may not point to a real file, so do the check.
@@ -614,7 +704,7 @@ proc auto_execok name {
 	unset -nocomplain checked
 	foreach dir [split $path {;}] {
 	    # Skip already checked directories
-	    if {[info exists checked($dir)] || $dir eq {}} {
+	    if {[info exists checked($dir)] || ($dir eq {})} {
 		continue
 	    }
 	    set checked($dir) {}
@@ -675,10 +765,11 @@ proc auto_execok name {
 proc tcl::CopyDirectory {action src dest} {
     set nsrc [file normalize $src]
     set ndest [file normalize $dest]
+
     if {$action eq "renaming"} {
 	# Can't rename volumes.  We could give a more precise
 	# error message here, but that would break the test suite.
-	if {[lsearch -exact [file volumes] $nsrc] != -1} {
+	if {$nsrc in [file volumes]} {
 	    return -code error "error $action \"$src\" to\
 	      \"$dest\": trying to rename a volume or move a directory\
 	      into itself"
@@ -691,19 +782,24 @@ proc tcl::CopyDirectory {action src dest} {
 	      into itself"
 	}
 	if {$action eq "copying"} {
-	    return -code error "error $action \"$src\" to\
-	      \"$dest\": file already exists"
+	    # We used to throw an error here, but, looking more closely
+	    # at the core copy code in tclFCmd.c, if the destination
+	    # exists, then we should only call this function if -force
+	    # is true, which means we just want to over-write.  So,
+	    # the following code is now commented out.
+	    # 
+	    # return -code error "error $action \"$src\" to\
+	    # \"$dest\": file already exists"
 	} else {
 	    # Depending on the platform, and on the current
 	    # working directory, the directories '.', '..'
 	    # can be returned in various combinations.  Anyway,
 	    # if any other file is returned, we must signal an error.
 	    set existing [glob -nocomplain -directory $dest * .*]
-	    eval [linsert \
-		    [glob -nocomplain -directory $dest -type hidden * .*] 0 \
-		    lappend existing]
+	    lappend existing {*}[glob -nocomplain -directory $dest \
+		    -type hidden * .*]
 	    foreach s $existing {
-		if {([file tail $s] ne ".") && ([file tail $s] ne "..")} {
+		if {[file tail $s] ni {. ..}} {
 		    return -code error "error $action \"$src\" to\
 		      \"$dest\": file already exists"
 		}
@@ -711,7 +807,7 @@ proc tcl::CopyDirectory {action src dest} {
 	}
     } else {
 	if {[string first $nsrc $ndest] != -1} {
-	    set srclen [expr {[llength [file split $nsrc]] -1}]
+	    set srclen [expr {[llength [file split $nsrc]] - 1}]
 	    set ndest [lindex [file split $ndest] $srclen]
 	    if {$ndest eq [file tail $nsrc]} {
 		return -code error "error $action \"$src\" to\
@@ -729,10 +825,10 @@ proc tcl::CopyDirectory {action src dest} {
     # or filesystems hidden files may have other interpretations.
     set filelist [concat [glob -nocomplain -directory $src *] \
       [glob -nocomplain -directory $src -types hidden *]]
-    
+
     foreach s [lsort -unique $filelist] {
-	if {([file tail $s] ne ".") && ([file tail $s] ne "..")} {
-	    file copy $s [file join $dest [file tail $s]]
+	if {[file tail $s] ni {. ..}} {
+	    file copy -force -- $s [file join $dest [file tail $s]]
 	}
     }
     return
diff --git a/library/ldAout.tcl b/library/ldAout.tcl
deleted file mode 100644
index bd520a3..0000000
--- a/library/ldAout.tcl
+++ /dev/null
@@ -1,231 +0,0 @@
-# ldAout.tcl --
-#
-#	This "tclldAout" procedure in this script acts as a replacement
-#	for the "ld" command when linking an object file that will be
-#	loaded dynamically into Tcl or Tk using pseudo-static linking.
-#
-# Parameters:
-#	The arguments to the script are the command line options for
-#	an "ld" command.
-#
-# Results:
-#	The "ld" command is parsed, and the "-o" option determines the
-#	module name.  ".a" and ".o" options are accumulated.
-#	The input archives and object files are examined with the "nm"
-#	command to determine whether the modules initialization
-#	entry and safe initialization entry are present.  A trivial
-#	C function that locates the entries is composed, compiled, and
-#	its .o file placed before all others in the command; then
-#	"ld" is executed to bind the objects together.
-#
-# Copyright (c) 1995, by General Electric Company. All rights reserved.
-#
-# See the file "license.terms" for information on usage and redistribution
-# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-#
-# This work was supported in part by the ARPA Manufacturing Automation
-# and Design Engineering (MADE) Initiative through ARPA contract
-# F33615-94-C-4400.
-
-proc tclLdAout {{cc {}} {shlib_suffix {}} {shlib_cflags none}} {
-    global env
-    global argv
-
-    if {[string equal $cc ""]} {
-	set cc $env(CC)
-    }
-
-    # if only two parameters are supplied there is assumed that the
-    # only shlib_suffix is missing. This parameter is anyway available
-    # as "info sharedlibextension" too, so there is no need to transfer
-    # 3 parameters to the function tclLdAout. For compatibility, this
-    # function now accepts both 2 and 3 parameters.
-
-    if {[string equal $shlib_suffix ""]} {
-	set shlib_cflags $env(SHLIB_CFLAGS)
-    } elseif {[string equal $shlib_cflags "none"]} {
-	set shlib_cflags $shlib_suffix
-    }
-
-    # seenDotO is nonzero if a .o or .a file has been seen
-    set seenDotO 0
-
-    # minusO is nonzero if the last command line argument was "-o".
-    set minusO 0
-
-    # head has command line arguments up to but not including the first
-    # .o or .a file. tail has the rest of the arguments.
-    set head {}
-    set tail {}
-
-    # nmCommand is the "nm" command that lists global symbols from the
-    # object files.
-    set nmCommand {|nm -g}
-
-    # entryProtos is the table of _Init and _SafeInit prototypes found in the
-    # module.
-    set entryProtos {}
-
-    # entryPoints is the table of _Init and _SafeInit entries found in the
-    # module.
-    set entryPoints {}
-
-    # libraries is the list of -L and -l flags to the linker.
-    set libraries {}
-    set libdirs {}
-
-    # Process command line arguments
-    foreach a $argv {
-	if {!$minusO && [regexp {\.[ao]$} $a]} {
-	    set seenDotO 1
-	    lappend nmCommand $a
-	}
-	if {$minusO} {
-	    set outputFile $a
-	    set minusO 0
-	} elseif {![string compare $a -o]} {
-	    set minusO 1
-	}
-	if {[regexp {^-[lL]} $a]} {
-	    lappend libraries $a
-	    if {[regexp {^-L} $a]} {
-		lappend libdirs [string range $a 2 end]
-	    }
-	} elseif {$seenDotO} {
-	    lappend tail $a
-	} else {
-	    lappend head $a
-	}
-    }
-    lappend libdirs /lib /usr/lib
-
-    # MIPS -- If there are corresponding G0 libraries, replace the
-    # ordinary ones with the G0 ones.
-
-    set libs {}
-    foreach lib $libraries {
-	if {[regexp {^-l} $lib]} {
-	    set lname [string range $lib 2 end]
-	    foreach dir $libdirs {
-		if {[file exists [file join $dir lib${lname}_G0.a]]} {
-		    set lname ${lname}_G0
-		    break
-		}
-	    }
-	    lappend libs -l$lname
-	} else {
-	    lappend libs $lib
-	}
-    }
-    set libraries $libs
-
-    # Extract the module name from the "-o" option
-
-    if {![info exists outputFile]} {
-	error "-o option must be supplied to link a Tcl load module"
-    }
-    set m [file tail $outputFile]
-    if {[regexp {\.a$} $outputFile]} {
-	set shlib_suffix .a
-    } else {
-	set shlib_suffix ""
-    }
-    if {[regexp {\..*$} $outputFile match]} {
-	set l [expr {[string length $m] - [string length $match]}]
-    } else {
-	error "Output file does not appear to have a suffix"
-    }
-    set modName [string tolower $m 0 [expr {$l-1}]]
-    if {[regexp {^lib} $modName]} {
-	set modName [string range $modName 3 end]
-    }
-    if {[regexp {[0-9\.]*(_g0)?$} $modName match]} {
-	set modName [string range $modName 0 [expr {[string length $modName]-[string length $match]-1}]]
-    }
-    set modName [string totitle $modName]
-
-    # Catalog initialization entry points found in the module
-
-    set f [open $nmCommand r]
-    while {[gets $f l] >= 0} {
-	if {[regexp {T[ 	]*_?([A-Z][a-z0-9_]*_(Safe)?Init(__FP10Tcl_Interp)?)$} $l trash symbol]} {
-	    if {![regexp {_?([A-Z][a-z0-9_]*_(Safe)?Init)} $symbol trash s]} {
-		set s $symbol
-	    }
-	    append entryProtos {extern int } $symbol { (); } \n
-	    append entryPoints {  } \{ { "} $s {", } $symbol { } \} , \n
-	}
-    }
-    close $f
-
-    if {[string equal $entryPoints ""]} {
-	error "No entry point found in objects"
-    }
-
-    # Compose a C function that resolves the initialization entry points and
-    # embeds the required libraries in the object code.
-
-    set C {#include <string.h>}
-    append C \n
-    append C {char TclLoadLibraries_} $modName { [] =} \n
-    append C {  "@LIBS: } $libraries {";} \n
-    append C $entryProtos
-    append C {static struct } \{ \n
-    append C {  char * name;} \n
-    append C {  int (*value)();} \n
-    append C \} {dictionary [] = } \{ \n
-    append C $entryPoints
-    append C {  0, 0 } \n \} \; \n
-    append C {typedef struct Tcl_Interp Tcl_Interp;} \n
-    append C {typedef int Tcl_PackageInitProc (Tcl_Interp *);} \n
-    append C {Tcl_PackageInitProc *} \n
-    append C TclLoadDictionary_ $modName { (symbol)} \n
-    append C {    CONST char * symbol;} \n
-    append C {
-	{
-	    int i;
-	    for (i = 0; dictionary [i] . name != 0; ++i) {
-		if (!strcmp (symbol, dictionary [i] . name)) {
-		    return dictionary [i].value;
-		}
-	    }
-	    return 0;
-	}
-    }
-    append C \n
-
-
-    # Write the C module and compile it
-
-    set cFile tcl$modName.c
-    set f [open $cFile w]
-    puts -nonewline $f $C
-    close $f
-    set ccCommand "$cc -c $shlib_cflags $cFile"
-    puts stderr $ccCommand
-    eval exec $ccCommand
-
-    # Now compose and execute the ld command that packages the module
-
-    if {[string equal $shlib_suffix ".a"]} {
-	set ldCommand "ar cr $outputFile"
-	regsub { -o} $tail {} tail
-    } else {
-	set ldCommand ld
-	foreach item $head {
-	    lappend ldCommand $item
-	}
-    }
-    lappend ldCommand tcl$modName.o
-    foreach item $tail {
-	lappend ldCommand $item
-    }
-    puts stderr $ldCommand
-    eval exec $ldCommand
-    if {[string equal $shlib_suffix ".a"]} {
-	exec ranlib $outputFile
-    }
-
-    # Clean up working files
-    exec /bin/rm $cFile [file rootname $cFile].o
-}
diff --git a/library/msgcat/msgcat.tcl b/library/msgcat/msgcat.tcl
index 3327bc6..5f0ba2e 100644
--- a/library/msgcat/msgcat.tcl
+++ b/library/msgcat/msgcat.tcl
@@ -10,14 +10,14 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 
-package require Tcl 8.2
+package require Tcl 8.5
 # When the version number changes, be sure to update the pkgIndex.tcl file,
 # and the installation directory in the Makefiles.
-package provide msgcat 1.3.5
+package provide msgcat 1.5.1
 
 namespace eval msgcat {
     namespace export mc mcload mclocale mcmax mcmset mcpreferences mcset \
-	    mcunknown
+	    mcunknown mcflset mcflmset
 
     # Records the current locale as passed to mclocale
     variable Locale ""
@@ -25,14 +25,18 @@ namespace eval msgcat {
     # Records the list of locales to search
     variable Loclist {}
 
+    # Records the locale of the currently sourced message catalogue file
+    variable FileLocale
+
     # Records the mapping between source strings and translated strings.  The
-    # array key is of the form "<locale>,<namespace>,<src>" and the value is
+    # dict key is of the form "<locale> <namespace> <src>", where locale and
+    # namespace should be themselves dict values and the value is
     # the translated string.
-    array set Msgs {}
+    variable Msgs [dict create]
 
     # Map of language codes used in Windows registry to those of ISO-639
     if {[info sharedlibextension] eq ".dll"} {
-	array set WinRegToISO639 {
+	variable WinRegToISO639 [dict create  {*}{
 	    01 ar 0401 ar_SA 0801 ar_IQ 0c01 ar_EG 1001 ar_LY 1401 ar_DZ
 		  1801 ar_MA 1c01 ar_TN 2001 ar_OM 2401 ar_YE 2801 ar_SY
 		  2c01 ar_JO 3001 ar_LB 3401 ar_KW 3801 ar_AE 3c01 ar_BH
@@ -158,7 +162,7 @@ namespace eval msgcat {
 	    77 so 0477 so_SO
 	    78 sit 0478 sit_CN
 	    79 pap 0479 pap_AN
-	}
+	}]
     }
 }
 
@@ -190,20 +194,19 @@ proc msgcat::mc {src args} {
 
     while {$ns != ""} {
 	foreach loc $Loclist {
-	    if {[info exists Msgs($loc,$ns,$src)]} {
+	    if {[dict exists $Msgs $loc $ns $src]} {
 		if {[llength $args] == 0} {
-		    return $Msgs($loc,$ns,$src)
+		    return [dict get $Msgs $loc $ns $src]
 		} else {
-		    return [uplevel 1 \
-			    [linsert $args 0 ::format $Msgs($loc,$ns,$src)]]
+		    return [format [dict get $Msgs $loc $ns $src] {*}$args]
 		}
 	    }
 	}
 	set ns [namespace parent $ns]
     }
     # we have not found the translation
-    return [uplevel 1 \
-	    [linsert $args 0 [::namespace origin mcunknown] $Locale $src]]
+    return [uplevel 1 [list [namespace origin mcunknown] \
+	    $Locale $src {*}$args]]
 }
 
 # msgcat::mclocale --
@@ -224,7 +227,8 @@ proc msgcat::mclocale {args} {
     set len [llength $args]
 
     if {$len > 1} {
-	error {wrong # args: should be "mclocale ?newLocale?"}
+	return -code error "wrong # args: should be\
+		\"[lindex [info level 0] 0] ?newLocale?\""
     }
 
     if {$len == 1} {
@@ -237,9 +241,13 @@ proc msgcat::mclocale {args} {
 	set Loclist {}
 	set word ""
 	foreach part [split $Locale _] {
-	    set word [string trimleft "${word}_${part}" _]
-	    set Loclist [linsert $Loclist 0 $word]
+	    set word [string trim "${word}_${part}" _]
+	    if {$word ne [lindex $Loclist 0]} {
+		set Loclist [linsert $Loclist 0 $word]
+	    }
 	}
+	lappend Loclist {}
+	set Locale [lindex $Loclist 0]
     }
     return $Locale
 }
@@ -272,17 +280,30 @@ proc msgcat::mcpreferences {} {
 #	Returns the number of message catalogs that were loaded.
 
 proc msgcat::mcload {langdir} {
+    variable FileLocale
+    # Save the file locale if we are recursively called
+    if {[info exists FileLocale]} {
+	set nestedFileLocale $FileLocale
+    }
     set x 0
     foreach p [mcpreferences] {
+	if {$p eq {}} {
+	    set p ROOT
+	}
 	set langfile [file join $langdir $p.msg]
 	if {[file exists $langfile]} {
 	    incr x
-	    set fid [open $langfile "r"]
-	    fconfigure $fid -encoding utf-8
-	    uplevel 1 [read $fid]
-	    close $fid
+	    set FileLocale [string tolower [file tail [file rootname $langfile]]]
+	    if {"root" eq $FileLocale} {
+		set FileLocale ""
+	    }
+	    uplevel 1 [list ::source -encoding utf-8 $langfile]
+	    unset FileLocale
 	}
     }
+    if {[info exists nestedFileLocale]} {
+	set FileLocale $nestedFileLocale
+    }
     return $x
 }
 
@@ -307,7 +328,38 @@ proc msgcat::mcset {locale src {dest ""}} {
 
     set ns [uplevel 1 [list ::namespace current]]
 
-    set Msgs([string tolower $locale],$ns,$src) $dest
+    set locale [string tolower $locale]
+
+    dict set Msgs $locale $ns $src $dest
+    return $dest
+}
+
+# msgcat::mcflset --
+#
+#	Set the translation for a given string in the current file locale.
+#
+# Arguments:
+#	src		The source string.
+#	dest		(Optional) The translated string.  If omitted,
+#			the source string is used.
+#
+# Results:
+#	Returns the new locale.
+
+proc msgcat::mcflset {src {dest ""}} {
+    variable FileLocale
+    variable Msgs
+
+    if {![info exists FileLocale]} {
+	return -code error \
+	    "must only be used inside a message catalog loaded with ::msgcat::mcload"
+    }
+    if {[llength [info level 0]] == 2} { ;# dest not specified
+	set dest $src
+    }
+
+    set ns [uplevel 1 [list ::namespace current]]
+    dict set Msgs $FileLocale $ns $src $dest
     return $dest
 }
 
@@ -322,22 +374,54 @@ proc msgcat::mcset {locale src {dest ""}} {
 # Results:
 #	Returns the number of pairs processed
 
-proc msgcat::mcmset {locale pairs } {
+proc msgcat::mcmset {locale pairs} {
     variable Msgs
 
     set length [llength $pairs]
     if {$length % 2} {
-	error {bad translation list: should be "mcmset locale {src dest ...}"}
+	return -code error "bad translation list:\
+		 should be \"[lindex [info level 0] 0] locale {src dest ...}\""
     }
 
     set locale [string tolower $locale]
     set ns [uplevel 1 [list ::namespace current]]
 
     foreach {src dest} $pairs {
-	set Msgs($locale,$ns,$src) $dest
+	dict set Msgs $locale $ns $src $dest
     }
 
-    return $length
+    return [expr {$length / 2}]
+}
+
+# msgcat::mcflmset --
+#
+#	Set the translation for multiple strings in the mc file locale.
+#
+# Arguments:
+#	pairs		One or more src/dest pairs (must be even length)
+#
+# Results:
+#	Returns the number of pairs processed
+
+proc msgcat::mcflmset {pairs} {
+    variable FileLocale
+    variable Msgs
+
+    if {![info exists FileLocale]} {
+	return -code error \
+	    "must only be used inside a message catalog loaded with ::msgcat::mcload"
+    }
+    set length [llength $pairs]
+    if {$length % 2} {
+	return -code error "bad translation list:\
+		should be \"[lindex [info level 0] 0] locale {src dest ...}\""
+    }
+
+    set ns [uplevel 1 [list ::namespace current]]
+    foreach {src dest} $pairs {
+	dict set Msgs $FileLocale $ns $src $dest
+    }
+    return [expr {$length / 2}]
 }
 
 # msgcat::mcunknown --
@@ -359,7 +443,7 @@ proc msgcat::mcmset {locale pairs } {
 
 proc msgcat::mcunknown {locale src args} {
     if {[llength $args]} {
-	return [uplevel 1 [linsert $args 0 ::format $src]]
+	return [format $src {*}$args]
     } else {
 	return $src
     }
@@ -425,9 +509,10 @@ proc msgcat::Init {} {
     # set default locale, try to get from environment
     #
     foreach varName {LC_ALL LC_MESSAGES LANG} {
-	if {[info exists env($varName)]
-		&& ![string equal "" $env($varName)]} {
-	    if {![catch {mclocale [ConvertLocale $env($varName)]}]} {
+	if {[info exists env($varName)] && ("" ne $env($varName))} {
+	    if {![catch {
+		mclocale [ConvertLocale $env($varName)]
+	    }]} {
 		return
 	    }
 	}
@@ -435,19 +520,19 @@ proc msgcat::Init {} {
     #
     # On Darwin, fallback to current CFLocale identifier if available.
     #
-    if {[string equal $::tcl_platform(os) Darwin]
-	    && [string equal $::tcl_platform(platform) unix]
-	    && [info exists ::tcl::mac::locale]
-	    && ![string equal $::tcl::mac::locale ""]} {
-	if {![catch {mclocale [ConvertLocale $::tcl::mac::locale]}]} {
+    if {[info exists ::tcl::mac::locale] && $::tcl::mac::locale ne ""} {
+	if {![catch {
+	    mclocale [ConvertLocale $::tcl::mac::locale]
+	}]} {
 	    return
 	}
     }
     #
-    # The rest of this routine is special processing for Windows;
-    # all other platforms, get out now.
+    # The rest of this routine is special processing for Windows or
+    # Cygwin. All other platforms, get out now.
     #
-    if {![string equal [info sharedlibextension] .dll]} {
+    if {([info sharedlibextension] ne ".dll")
+	    || [catch {package require registry}]} {
 	mclocale C
 	return
     }
@@ -455,9 +540,36 @@ proc msgcat::Init {} {
     # On Windows or Cygwin, try to set locale depending on registry
     # settings, or fall back on locale of "C".
     #
+
+    # First check registry value LocalName present from Windows Vista
+    # which contains the local string as RFC5646, composed of:
+    # [a-z]{2,3} : language
+    # -[a-z]{4}  : script (optional, translated by table Latn->latin)
+    # -[a-z]{2}|[0-9]{3} : territory (optional, numerical region codes not used)
+    # (-.*)* : variant, extension, private use (optional, not used)
+    # Those are translated to local strings.
+    # Examples: de-CH -> de_ch, sr-Latn-CS -> sr_cs@latin, es-419 -> es
+    #
     set key {HKEY_CURRENT_USER\Control Panel\International}
-    if {[catch {package require registry}] \
-	    || [catch {registry get $key "locale"} locale]} {
+    if {![catch {registry get $key LocaleName} localeName]
+	    && [regexp {^([a-z]{2,3})(?:-([a-z]{4}))?(?:-([a-z]{2}))?(?:-.+)?$}\
+	    [string tolower $localeName] match locale script territory]} {
+	if {"" ne $territory} {
+	    append locale _ $territory
+	}
+	set modifierDict [dict create latn latin cyrl cyrillic]
+	if {[dict exists $modifierDict $script]} {
+	    append locale @ [dict get $modifierDict $script]
+	}
+	if {![catch {mclocale [ConvertLocale $locale]}]} {
+	    return
+	}
+    }
+
+    # then check key locale which contains a numerical language ID
+    if {[catch {
+	set locale [registry get $key "locale"]
+    }]} {
 	mclocale C
 	return
     }
@@ -473,7 +585,9 @@ proc msgcat::Init {} {
     variable WinRegToISO639
     set locale [string tolower $locale]
     while {[string length $locale]} {
-	if {![catch {mclocale [ConvertLocale $WinRegToISO639($locale)]}]} {
+	if {![catch {
+	    mclocale [ConvertLocale [dict get $WinRegToISO639 $locale]]
+	}]} {
 	    return
 	}
 	set locale [string range $locale 1 end]
diff --git a/library/msgcat/pkgIndex.tcl b/library/msgcat/pkgIndex.tcl
index 280b8d2..3fdb25a 100644
--- a/library/msgcat/pkgIndex.tcl
+++ b/library/msgcat/pkgIndex.tcl
@@ -1,2 +1,2 @@
-if {![package vsatisfies [package provide Tcl] 8.2]} {return}
-package ifneeded msgcat 1.3.5 [list source [file join $dir msgcat.tcl]]
+if {![package vsatisfies [package provide Tcl] 8.5]} {return}
+package ifneeded msgcat 1.5.1 [list source [file join $dir msgcat.tcl]]
diff --git a/library/msgs/af.msg b/library/msgs/af.msg
new file mode 100755
index 0000000..0892615
--- /dev/null
+++ b/library/msgs/af.msg
@@ -0,0 +1,49 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset af DAYS_OF_WEEK_ABBREV [list \
+        "So"\
+        "Ma"\
+        "Di"\
+        "Wo"\
+        "Do"\
+        "Vr"\
+        "Sa"]
+    ::msgcat::mcset af DAYS_OF_WEEK_FULL [list \
+        "Sondag"\
+        "Maandag"\
+        "Dinsdag"\
+        "Woensdag"\
+        "Donderdag"\
+        "Vrydag"\
+        "Saterdag"]
+    ::msgcat::mcset af MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "Mar"\
+        "Apr"\
+        "Mei"\
+        "Jun"\
+        "Jul"\
+        "Aug"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Des"\
+        ""]
+    ::msgcat::mcset af MONTHS_FULL [list \
+        "Januarie"\
+        "Februarie"\
+        "Maart"\
+        "April"\
+        "Mei"\
+        "Junie"\
+        "Julie"\
+        "Augustus"\
+        "September"\
+        "Oktober"\
+        "November"\
+        "Desember"\
+        ""]
+    ::msgcat::mcset af AM "VM"
+    ::msgcat::mcset af PM "NM"
+}
diff --git a/library/msgs/af_za.msg b/library/msgs/af_za.msg
new file mode 100755
index 0000000..fef48ad
--- /dev/null
+++ b/library/msgs/af_za.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset af_ZA DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset af_ZA TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset af_ZA DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/ar.msg b/library/msgs/ar.msg
new file mode 100755
index 0000000..257157f
--- /dev/null
+++ b/library/msgs/ar.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ar DAYS_OF_WEEK_ABBREV [list \
+        "\u062d"\
+        "\u0646"\
+        "\u062b"\
+        "\u0631"\
+        "\u062e"\
+        "\u062c"\
+        "\u0633"]
+    ::msgcat::mcset ar DAYS_OF_WEEK_FULL [list \
+        "\u0627\u0644\u0623\u062d\u062f"\
+        "\u0627\u0644\u0627\u062b\u0646\u064a\u0646"\
+        "\u0627\u0644\u062b\u0644\u0627\u062b\u0627\u0621"\
+        "\u0627\u0644\u0623\u0631\u0628\u0639\u0627\u0621"\
+        "\u0627\u0644\u062e\u0645\u064a\u0633"\
+        "\u0627\u0644\u062c\u0645\u0639\u0629"\
+        "\u0627\u0644\u0633\u0628\u062a"]
+    ::msgcat::mcset ar MONTHS_ABBREV [list \
+        "\u064a\u0646\u0627"\
+        "\u0641\u0628\u0631"\
+        "\u0645\u0627\u0631"\
+        "\u0623\u0628\u0631"\
+        "\u0645\u0627\u064a"\
+        "\u064a\u0648\u0646"\
+        "\u064a\u0648\u0644"\
+        "\u0623\u063a\u0633"\
+        "\u0633\u0628\u062a"\
+        "\u0623\u0643\u062a"\
+        "\u0646\u0648\u0641"\
+        "\u062f\u064a\u0633"\
+        ""]
+    ::msgcat::mcset ar MONTHS_FULL [list \
+        "\u064a\u0646\u0627\u064a\u0631"\
+        "\u0641\u0628\u0631\u0627\u064a\u0631"\
+        "\u0645\u0627\u0631\u0633"\
+        "\u0623\u0628\u0631\u064a\u0644"\
+        "\u0645\u0627\u064a\u0648"\
+        "\u064a\u0648\u0646\u064a\u0648"\
+        "\u064a\u0648\u0644\u064a\u0648"\
+        "\u0623\u063a\u0633\u0637\u0633"\
+        "\u0633\u0628\u062a\u0645\u0628\u0631"\
+        "\u0623\u0643\u062a\u0648\u0628\u0631"\
+        "\u0646\u0648\u0641\u0645\u0628\u0631"\
+        "\u062f\u064a\u0633\u0645\u0628\u0631"\
+        ""]
+    ::msgcat::mcset ar BCE "\u0642.\u0645"
+    ::msgcat::mcset ar CE "\u0645"
+    ::msgcat::mcset ar AM "\u0635"
+    ::msgcat::mcset ar PM "\u0645"
+    ::msgcat::mcset ar DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset ar TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset ar DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/ar_in.msg b/library/msgs/ar_in.msg
new file mode 100755
index 0000000..185e49c
--- /dev/null
+++ b/library/msgs/ar_in.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ar_IN DATE_FORMAT "%A %d %B %Y"
+    ::msgcat::mcset ar_IN TIME_FORMAT_12 "%I:%M:%S  %z"
+    ::msgcat::mcset ar_IN DATE_TIME_FORMAT "%A %d %B %Y %I:%M:%S  %z %z"
+}
diff --git a/library/msgs/ar_jo.msg b/library/msgs/ar_jo.msg
new file mode 100755
index 0000000..0f5e269
--- /dev/null
+++ b/library/msgs/ar_jo.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ar_JO DAYS_OF_WEEK_ABBREV [list \
+        "\u0627\u0644\u0623\u062d\u062f"\
+        "\u0627\u0644\u0627\u062b\u0646\u064a\u0646"\
+        "\u0627\u0644\u062b\u0644\u0627\u062b\u0627\u0621"\
+        "\u0627\u0644\u0623\u0631\u0628\u0639\u0627\u0621"\
+        "\u0627\u0644\u062e\u0645\u064a\u0633"\
+        "\u0627\u0644\u062c\u0645\u0639\u0629"\
+        "\u0627\u0644\u0633\u0628\u062a"]
+    ::msgcat::mcset ar_JO MONTHS_ABBREV [list \
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0634\u0628\u0627\u0637"\
+        "\u0622\u0630\u0627\u0631"\
+        "\u0646\u064a\u0633\u0627\u0646"\
+        "\u0646\u0648\u0627\u0631"\
+        "\u062d\u0632\u064a\u0631\u0627\u0646"\
+        "\u062a\u0645\u0648\u0632"\
+        "\u0622\u0628"\
+        "\u0623\u064a\u0644\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        ""]
+    ::msgcat::mcset ar_JO MONTHS_FULL [list \
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0634\u0628\u0627\u0637"\
+        "\u0622\u0630\u0627\u0631"\
+        "\u0646\u064a\u0633\u0627\u0646"\
+        "\u0646\u0648\u0627\u0631"\
+        "\u062d\u0632\u064a\u0631\u0627\u0646"\
+        "\u062a\u0645\u0648\u0632"\
+        "\u0622\u0628"\
+        "\u0623\u064a\u0644\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        ""]
+}
diff --git a/library/msgs/ar_lb.msg b/library/msgs/ar_lb.msg
new file mode 100755
index 0000000..e62acd3
--- /dev/null
+++ b/library/msgs/ar_lb.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ar_LB DAYS_OF_WEEK_ABBREV [list \
+        "\u0627\u0644\u0623\u062d\u062f"\
+        "\u0627\u0644\u0627\u062b\u0646\u064a\u0646"\
+        "\u0627\u0644\u062b\u0644\u0627\u062b\u0627\u0621"\
+        "\u0627\u0644\u0623\u0631\u0628\u0639\u0627\u0621"\
+        "\u0627\u0644\u062e\u0645\u064a\u0633"\
+        "\u0627\u0644\u062c\u0645\u0639\u0629"\
+        "\u0627\u0644\u0633\u0628\u062a"]
+    ::msgcat::mcset ar_LB MONTHS_ABBREV [list \
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0634\u0628\u0627\u0637"\
+        "\u0622\u0630\u0627\u0631"\
+        "\u0646\u064a\u0633\u0627\u0646"\
+        "\u0646\u0648\u0627\u0631"\
+        "\u062d\u0632\u064a\u0631\u0627\u0646"\
+        "\u062a\u0645\u0648\u0632"\
+        "\u0622\u0628"\
+        "\u0623\u064a\u0644\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        ""]
+    ::msgcat::mcset ar_LB MONTHS_FULL [list \
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0634\u0628\u0627\u0637"\
+        "\u0622\u0630\u0627\u0631"\
+        "\u0646\u064a\u0633\u0627\u0646"\
+        "\u0646\u0648\u0627\u0631"\
+        "\u062d\u0632\u064a\u0631\u0627\u0646"\
+        "\u062a\u0645\u0648\u0632"\
+        "\u0622\u0628"\
+        "\u0623\u064a\u0644\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        ""]
+}
diff --git a/library/msgs/ar_sy.msg b/library/msgs/ar_sy.msg
new file mode 100755
index 0000000..d5e1c87
--- /dev/null
+++ b/library/msgs/ar_sy.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ar_SY DAYS_OF_WEEK_ABBREV [list \
+        "\u0627\u0644\u0623\u062d\u062f"\
+        "\u0627\u0644\u0627\u062b\u0646\u064a\u0646"\
+        "\u0627\u0644\u062b\u0644\u0627\u062b\u0627\u0621"\
+        "\u0627\u0644\u0623\u0631\u0628\u0639\u0627\u0621"\
+        "\u0627\u0644\u062e\u0645\u064a\u0633"\
+        "\u0627\u0644\u062c\u0645\u0639\u0629"\
+        "\u0627\u0644\u0633\u0628\u062a"]
+    ::msgcat::mcset ar_SY MONTHS_ABBREV [list \
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0634\u0628\u0627\u0637"\
+        "\u0622\u0630\u0627\u0631"\
+        "\u0646\u064a\u0633\u0627\u0646"\
+        "\u0646\u0648\u0627\u0631"\
+        "\u062d\u0632\u064a\u0631\u0627\u0646"\
+        "\u062a\u0645\u0648\u0632"\
+        "\u0622\u0628"\
+        "\u0623\u064a\u0644\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        ""]
+    ::msgcat::mcset ar_SY MONTHS_FULL [list \
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0634\u0628\u0627\u0637"\
+        "\u0622\u0630\u0627\u0631"\
+        "\u0646\u064a\u0633\u0627\u0646"\
+        "\u0646\u0648\u0627\u0631\u0627\u0646"\
+        "\u062d\u0632\u064a\u0631"\
+        "\u062a\u0645\u0648\u0632"\
+        "\u0622\u0628"\
+        "\u0623\u064a\u0644\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        "\u062a\u0634\u0631\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u064a"\
+        "\u0643\u0627\u0646\u0648\u0646 \u0627\u0644\u0623\u0648\u0644"\
+        ""]
+}
diff --git a/library/msgs/be.msg b/library/msgs/be.msg
new file mode 100755
index 0000000..379a1d7
--- /dev/null
+++ b/library/msgs/be.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset be DAYS_OF_WEEK_ABBREV [list \
+        "\u043d\u0434"\
+        "\u043f\u043d"\
+        "\u0430\u0442"\
+        "\u0441\u0440"\
+        "\u0447\u0446"\
+        "\u043f\u0442"\
+        "\u0441\u0431"]
+    ::msgcat::mcset be DAYS_OF_WEEK_FULL [list \
+        "\u043d\u044f\u0434\u0437\u0435\u043b\u044f"\
+        "\u043f\u0430\u043d\u044f\u0434\u0437\u0435\u043b\u0430\u043a"\
+        "\u0430\u045e\u0442\u043e\u0440\u0430\u043a"\
+        "\u0441\u0435\u0440\u0430\u0434\u0430"\
+        "\u0447\u0430\u0446\u0432\u0435\u0440"\
+        "\u043f\u044f\u0442\u043d\u0456\u0446\u0430"\
+        "\u0441\u0443\u0431\u043e\u0442\u0430"]
+    ::msgcat::mcset be MONTHS_ABBREV [list \
+        "\u0441\u0442\u0434"\
+        "\u043b\u044e\u0442"\
+        "\u0441\u043a\u0432"\
+        "\u043a\u0440\u0441"\
+        "\u043c\u0430\u0439"\
+        "\u0447\u0440\u0432"\
+        "\u043b\u043f\u043d"\
+        "\u0436\u043d\u0432"\
+        "\u0432\u0440\u0441"\
+        "\u043a\u0441\u0442"\
+        "\u043b\u0441\u0442"\
+        "\u0441\u043d\u0436"\
+        ""]
+    ::msgcat::mcset be MONTHS_FULL [list \
+        "\u0441\u0442\u0443\u0434\u0437\u0435\u043d\u044f"\
+        "\u043b\u044e\u0442\u0430\u0433\u0430"\
+        "\u0441\u0430\u043a\u0430\u0432\u0456\u043a\u0430"\
+        "\u043a\u0440\u0430\u0441\u0430\u0432\u0456\u043a\u0430"\
+        "\u043c\u0430\u044f"\
+        "\u0447\u0440\u0432\u0435\u043d\u044f"\
+        "\u043b\u0456\u043f\u0435\u043d\u044f"\
+        "\u0436\u043d\u0456\u045e\u043d\u044f"\
+        "\u0432\u0435\u0440\u0430\u0441\u043d\u044f"\
+        "\u043a\u0430\u0441\u0442\u0440\u044b\u0447\u043d\u0456\u043a\u0430"\
+        "\u043b\u0438\u0441\u0442\u0430\u043f\u0430\u0434\u0430"\
+        "\u0441\u043d\u0435\u0436\u043d\u044f"\
+        ""]
+    ::msgcat::mcset be BCE "\u0434\u0430 \u043d.\u0435."
+    ::msgcat::mcset be CE "\u043d.\u0435."
+    ::msgcat::mcset be DATE_FORMAT "%e.%m.%Y"
+    ::msgcat::mcset be TIME_FORMAT "%k.%M.%S"
+    ::msgcat::mcset be DATE_TIME_FORMAT "%e.%m.%Y %k.%M.%S %z"
+}
diff --git a/library/msgs/bg.msg b/library/msgs/bg.msg
new file mode 100755
index 0000000..ff17759
--- /dev/null
+++ b/library/msgs/bg.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset bg DAYS_OF_WEEK_ABBREV [list \
+        "\u041d\u0434"\
+        "\u041f\u043d"\
+        "\u0412\u0442"\
+        "\u0421\u0440"\
+        "\u0427\u0442"\
+        "\u041f\u0442"\
+        "\u0421\u0431"]
+    ::msgcat::mcset bg DAYS_OF_WEEK_FULL [list \
+        "\u041d\u0435\u0434\u0435\u043b\u044f"\
+        "\u041f\u043e\u043d\u0435\u0434\u0435\u043b\u043d\u0438\u043a"\
+        "\u0412\u0442\u043e\u0440\u043d\u0438\u043a"\
+        "\u0421\u0440\u044f\u0434\u0430"\
+        "\u0427\u0435\u0442\u0432\u044a\u0440\u0442\u044a\u043a"\
+        "\u041f\u0435\u0442\u044a\u043a"\
+        "\u0421\u044a\u0431\u043e\u0442\u0430"]
+    ::msgcat::mcset bg MONTHS_ABBREV [list \
+        "I"\
+        "II"\
+        "III"\
+        "IV"\
+        "V"\
+        "VI"\
+        "VII"\
+        "VIII"\
+        "IX"\
+        "X"\
+        "XI"\
+        "XII"\
+        ""]
+    ::msgcat::mcset bg MONTHS_FULL [list \
+        "\u042f\u043d\u0443\u0430\u0440\u0438"\
+        "\u0424\u0435\u0432\u0440\u0443\u0430\u0440\u0438"\
+        "\u041c\u0430\u0440\u0442"\
+        "\u0410\u043f\u0440\u0438\u043b"\
+        "\u041c\u0430\u0439"\
+        "\u042e\u043d\u0438"\
+        "\u042e\u043b\u0438"\
+        "\u0410\u0432\u0433\u0443\u0441\u0442"\
+        "\u0421\u0435\u043f\u0442\u0435\u043c\u0432\u0440\u0438"\
+        "\u041e\u043a\u0442\u043e\u043c\u0432\u0440\u0438"\
+        "\u041d\u043e\u0435\u043c\u0432\u0440\u0438"\
+        "\u0414\u0435\u043a\u0435\u043c\u0432\u0440\u0438"\
+        ""]
+    ::msgcat::mcset bg BCE "\u043f\u0440.\u043d.\u0435."
+    ::msgcat::mcset bg CE "\u043d.\u0435."
+    ::msgcat::mcset bg DATE_FORMAT "%Y-%m-%e"
+    ::msgcat::mcset bg TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset bg DATE_TIME_FORMAT "%Y-%m-%e %k:%M:%S %z"
+}
diff --git a/library/msgs/bn.msg b/library/msgs/bn.msg
new file mode 100755
index 0000000..664b9d8
--- /dev/null
+++ b/library/msgs/bn.msg
@@ -0,0 +1,49 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset bn DAYS_OF_WEEK_ABBREV [list \
+        "\u09b0\u09ac\u09bf"\
+        "\u09b8\u09cb\u09ae"\
+        "\u09ae\u0999\u0997\u09b2"\
+        "\u09ac\u09c1\u09a7"\
+        "\u09ac\u09c3\u09b9\u09b8\u09cd\u09aa\u09a4\u09bf"\
+        "\u09b6\u09c1\u0995\u09cd\u09b0"\
+        "\u09b6\u09a8\u09bf"]
+    ::msgcat::mcset bn DAYS_OF_WEEK_FULL [list \
+        "\u09b0\u09ac\u09bf\u09ac\u09be\u09b0"\
+        "\u09b8\u09cb\u09ae\u09ac\u09be\u09b0"\
+        "\u09ae\u0999\u0997\u09b2\u09ac\u09be\u09b0"\
+        "\u09ac\u09c1\u09a7\u09ac\u09be\u09b0"\
+        "\u09ac\u09c3\u09b9\u09b8\u09cd\u09aa\u09a4\u09bf\u09ac\u09be\u09b0"\
+        "\u09b6\u09c1\u0995\u09cd\u09b0\u09ac\u09be\u09b0"\
+        "\u09b6\u09a8\u09bf\u09ac\u09be\u09b0"]
+    ::msgcat::mcset bn MONTHS_ABBREV [list \
+        "\u099c\u09be\u09a8\u09c1\u09df\u09be\u09b0\u09c0"\
+        "\u09ab\u09c7\u09ac\u09cd\u09b0\u09c1\u09df\u09be\u09b0\u09c0"\
+        "\u09ae\u09be\u09b0\u09cd\u099a"\
+        "\u098f\u09aa\u09cd\u09b0\u09bf\u09b2"\
+        "\u09ae\u09c7"\
+        "\u099c\u09c1\u09a8"\
+        "\u099c\u09c1\u09b2\u09be\u0987"\
+        "\u0986\u0997\u09b8\u09cd\u099f"\
+        "\u09b8\u09c7\u09aa\u09cd\u099f\u09c7\u09ae\u09cd\u09ac\u09b0"\
+        "\u0985\u0995\u09cd\u099f\u09cb\u09ac\u09b0"\
+        "\u09a8\u09ad\u09c7\u09ae\u09cd\u09ac\u09b0"\
+        "\u09a1\u09bf\u09b8\u09c7\u09ae\u09cd\u09ac\u09b0"\
+        ""]
+    ::msgcat::mcset bn MONTHS_FULL [list \
+        "\u099c\u09be\u09a8\u09c1\u09df\u09be\u09b0\u09c0"\
+        "\u09ab\u09c7\u09ac\u09cd\u09b0\u09c1\u09df\u09be\u09b0\u09c0"\
+        "\u09ae\u09be\u09b0\u09cd\u099a"\
+        "\u098f\u09aa\u09cd\u09b0\u09bf\u09b2"\
+        "\u09ae\u09c7"\
+        "\u099c\u09c1\u09a8"\
+        "\u099c\u09c1\u09b2\u09be\u0987"\
+        "\u0986\u0997\u09b8\u09cd\u099f"\
+        "\u09b8\u09c7\u09aa\u09cd\u099f\u09c7\u09ae\u09cd\u09ac\u09b0"\
+        "\u0985\u0995\u09cd\u099f\u09cb\u09ac\u09b0"\
+        "\u09a8\u09ad\u09c7\u09ae\u09cd\u09ac\u09b0"\
+        "\u09a1\u09bf\u09b8\u09c7\u09ae\u09cd\u09ac\u09b0"\
+        ""]
+    ::msgcat::mcset bn AM "\u09aa\u09c2\u09b0\u09cd\u09ac\u09be\u09b9\u09cd\u09a3"
+    ::msgcat::mcset bn PM "\u0985\u09aa\u09b0\u09be\u09b9\u09cd\u09a3"
+}
diff --git a/library/msgs/bn_in.msg b/library/msgs/bn_in.msg
new file mode 100755
index 0000000..28c000f
--- /dev/null
+++ b/library/msgs/bn_in.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset bn_IN DATE_FORMAT "%A %d %b %Y"
+    ::msgcat::mcset bn_IN TIME_FORMAT_12 "%I:%M:%S  %z"
+    ::msgcat::mcset bn_IN DATE_TIME_FORMAT "%A %d %b %Y %I:%M:%S  %z %z"
+}
diff --git a/library/msgs/ca.msg b/library/msgs/ca.msg
new file mode 100755
index 0000000..36c9772
--- /dev/null
+++ b/library/msgs/ca.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ca DAYS_OF_WEEK_ABBREV [list \
+        "dg."\
+        "dl."\
+        "dt."\
+        "dc."\
+        "dj."\
+        "dv."\
+        "ds."]
+    ::msgcat::mcset ca DAYS_OF_WEEK_FULL [list \
+        "diumenge"\
+        "dilluns"\
+        "dimarts"\
+        "dimecres"\
+        "dijous"\
+        "divendres"\
+        "dissabte"]
+    ::msgcat::mcset ca MONTHS_ABBREV [list \
+        "gen."\
+        "feb."\
+        "mar\u00e7"\
+        "abr."\
+        "maig"\
+        "juny"\
+        "jul."\
+        "ag."\
+        "set."\
+        "oct."\
+        "nov."\
+        "des."\
+        ""]
+    ::msgcat::mcset ca MONTHS_FULL [list \
+        "gener"\
+        "febrer"\
+        "mar\u00e7"\
+        "abril"\
+        "maig"\
+        "juny"\
+        "juliol"\
+        "agost"\
+        "setembre"\
+        "octubre"\
+        "novembre"\
+        "desembre"\
+        ""]
+    ::msgcat::mcset ca DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset ca TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset ca DATE_TIME_FORMAT "%d/%m/%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/cs.msg b/library/msgs/cs.msg
new file mode 100755
index 0000000..8db8bdd
--- /dev/null
+++ b/library/msgs/cs.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset cs DAYS_OF_WEEK_ABBREV [list \
+        "Ne"\
+        "Po"\
+        "\u00dat"\
+        "St"\
+        "\u010ct"\
+        "P\u00e1"\
+        "So"]
+    ::msgcat::mcset cs DAYS_OF_WEEK_FULL [list \
+        "Ned\u011ble"\
+        "Pond\u011bl\u00ed"\
+        "\u00dater\u00fd"\
+        "St\u0159eda"\
+        "\u010ctvrtek"\
+        "P\u00e1tek"\
+        "Sobota"]
+    ::msgcat::mcset cs MONTHS_ABBREV [list \
+        "I"\
+        "II"\
+        "III"\
+        "IV"\
+        "V"\
+        "VI"\
+        "VII"\
+        "VIII"\
+        "IX"\
+        "X"\
+        "XI"\
+        "XII"\
+        ""]
+    ::msgcat::mcset cs MONTHS_FULL [list \
+        "leden"\
+        "\u00fanor"\
+        "b\u0159ezen"\
+        "duben"\
+        "kv\u011bten"\
+        "\u010derven"\
+        "\u010dervenec"\
+        "srpen"\
+        "z\u00e1\u0159\u00ed"\
+        "\u0159\u00edjen"\
+        "listopad"\
+        "prosinec"\
+        ""]
+    ::msgcat::mcset cs BCE "p\u0159.Kr."
+    ::msgcat::mcset cs CE "po Kr."
+    ::msgcat::mcset cs AM "dop."
+    ::msgcat::mcset cs PM "odp."
+    ::msgcat::mcset cs DATE_FORMAT "%e.%m.%Y"
+    ::msgcat::mcset cs TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset cs DATE_TIME_FORMAT "%e.%m.%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/da.msg b/library/msgs/da.msg
new file mode 100755
index 0000000..e4fec7f
--- /dev/null
+++ b/library/msgs/da.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset da DAYS_OF_WEEK_ABBREV [list \
+        "s\u00f8"\
+        "ma"\
+        "ti"\
+        "on"\
+        "to"\
+        "fr"\
+        "l\u00f8"]
+    ::msgcat::mcset da DAYS_OF_WEEK_FULL [list \
+        "s\u00f8ndag"\
+        "mandag"\
+        "tirsdag"\
+        "onsdag"\
+        "torsdag"\
+        "fredag"\
+        "l\u00f8rdag"]
+    ::msgcat::mcset da MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "maj"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset da MONTHS_FULL [list \
+        "januar"\
+        "februar"\
+        "marts"\
+        "april"\
+        "maj"\
+        "juni"\
+        "juli"\
+        "august"\
+        "september"\
+        "oktober"\
+        "november"\
+        "december"\
+        ""]
+    ::msgcat::mcset da BCE "f.Kr."
+    ::msgcat::mcset da CE "e.Kr."
+    ::msgcat::mcset da DATE_FORMAT "%d-%m-%Y"
+    ::msgcat::mcset da TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset da DATE_TIME_FORMAT "%d-%m-%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/de.msg b/library/msgs/de.msg
new file mode 100755
index 0000000..9eb3145
--- /dev/null
+++ b/library/msgs/de.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset de DAYS_OF_WEEK_ABBREV [list \
+        "So"\
+        "Mo"\
+        "Di"\
+        "Mi"\
+        "Do"\
+        "Fr"\
+        "Sa"]
+    ::msgcat::mcset de DAYS_OF_WEEK_FULL [list \
+        "Sonntag"\
+        "Montag"\
+        "Dienstag"\
+        "Mittwoch"\
+        "Donnerstag"\
+        "Freitag"\
+        "Samstag"]
+    ::msgcat::mcset de MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "Mrz"\
+        "Apr"\
+        "Mai"\
+        "Jun"\
+        "Jul"\
+        "Aug"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Dez"\
+        ""]
+    ::msgcat::mcset de MONTHS_FULL [list \
+        "Januar"\
+        "Februar"\
+        "M\u00e4rz"\
+        "April"\
+        "Mai"\
+        "Juni"\
+        "Juli"\
+        "August"\
+        "September"\
+        "Oktober"\
+        "November"\
+        "Dezember"\
+        ""]
+    ::msgcat::mcset de BCE "v. Chr."
+    ::msgcat::mcset de CE "n. Chr."
+    ::msgcat::mcset de AM "vorm."
+    ::msgcat::mcset de PM "nachm."
+    ::msgcat::mcset de DATE_FORMAT "%d.%m.%Y"
+    ::msgcat::mcset de TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset de DATE_TIME_FORMAT "%d.%m.%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/de_at.msg b/library/msgs/de_at.msg
new file mode 100755
index 0000000..61bc266
--- /dev/null
+++ b/library/msgs/de_at.msg
@@ -0,0 +1,35 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset de_AT MONTHS_ABBREV [list \
+        "J\u00e4n"\
+        "Feb"\
+        "M\u00e4r"\
+        "Apr"\
+        "Mai"\
+        "Jun"\
+        "Jul"\
+        "Aug"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Dez"\
+        ""]
+    ::msgcat::mcset de_AT MONTHS_FULL [list \
+        "J\u00e4nner"\
+        "Februar"\
+        "M\u00e4rz"\
+        "April"\
+        "Mai"\
+        "Juni"\
+        "Juli"\
+        "August"\
+        "September"\
+        "Oktober"\
+        "November"\
+        "Dezember"\
+        ""]
+    ::msgcat::mcset de_AT DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset de_AT TIME_FORMAT "%T"
+    ::msgcat::mcset de_AT TIME_FORMAT_12 "%T"
+    ::msgcat::mcset de_AT DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/de_be.msg b/library/msgs/de_be.msg
new file mode 100755
index 0000000..3614763
--- /dev/null
+++ b/library/msgs/de_be.msg
@@ -0,0 +1,53 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset de_BE DAYS_OF_WEEK_ABBREV [list \
+        "Son"\
+        "Mon"\
+        "Die"\
+        "Mit"\
+        "Don"\
+        "Fre"\
+        "Sam"]
+    ::msgcat::mcset de_BE DAYS_OF_WEEK_FULL [list \
+        "Sonntag"\
+        "Montag"\
+        "Dienstag"\
+        "Mittwoch"\
+        "Donnerstag"\
+        "Freitag"\
+        "Samstag"]
+    ::msgcat::mcset de_BE MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "M\u00e4r"\
+        "Apr"\
+        "Mai"\
+        "Jun"\
+        "Jul"\
+        "Aug"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Dez"\
+        ""]
+    ::msgcat::mcset de_BE MONTHS_FULL [list \
+        "Januar"\
+        "Februar"\
+        "M\u00e4rz"\
+        "April"\
+        "Mai"\
+        "Juni"\
+        "Juli"\
+        "August"\
+        "September"\
+        "Oktober"\
+        "November"\
+        "Dezember"\
+        ""]
+    ::msgcat::mcset de_BE AM "vorm"
+    ::msgcat::mcset de_BE PM "nachm"
+    ::msgcat::mcset de_BE DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset de_BE TIME_FORMAT "%T"
+    ::msgcat::mcset de_BE TIME_FORMAT_12 "%T"
+    ::msgcat::mcset de_BE DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/el.msg b/library/msgs/el.msg
new file mode 100755
index 0000000..ac19f62
--- /dev/null
+++ b/library/msgs/el.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset el DAYS_OF_WEEK_ABBREV [list \
+        "\u039a\u03c5\u03c1"\
+        "\u0394\u03b5\u03c5"\
+        "\u03a4\u03c1\u03b9"\
+        "\u03a4\u03b5\u03c4"\
+        "\u03a0\u03b5\u03bc"\
+        "\u03a0\u03b1\u03c1"\
+        "\u03a3\u03b1\u03b2"]
+    ::msgcat::mcset el DAYS_OF_WEEK_FULL [list \
+        "\u039a\u03c5\u03c1\u03b9\u03b1\u03ba\u03ae"\
+        "\u0394\u03b5\u03c5\u03c4\u03ad\u03c1\u03b1"\
+        "\u03a4\u03c1\u03af\u03c4\u03b7"\
+        "\u03a4\u03b5\u03c4\u03ac\u03c1\u03c4\u03b7"\
+        "\u03a0\u03ad\u03bc\u03c0\u03c4\u03b7"\
+        "\u03a0\u03b1\u03c1\u03b1\u03c3\u03ba\u03b5\u03c5\u03ae"\
+        "\u03a3\u03ac\u03b2\u03b2\u03b1\u03c4\u03bf"]
+    ::msgcat::mcset el MONTHS_ABBREV [list \
+        "\u0399\u03b1\u03bd"\
+        "\u03a6\u03b5\u03b2"\
+        "\u039c\u03b1\u03c1"\
+        "\u0391\u03c0\u03c1"\
+        "\u039c\u03b1\u03ca"\
+        "\u0399\u03bf\u03c5\u03bd"\
+        "\u0399\u03bf\u03c5\u03bb"\
+        "\u0391\u03c5\u03b3"\
+        "\u03a3\u03b5\u03c0"\
+        "\u039f\u03ba\u03c4"\
+        "\u039d\u03bf\u03b5"\
+        "\u0394\u03b5\u03ba"\
+        ""]
+    ::msgcat::mcset el MONTHS_FULL [list \
+        "\u0399\u03b1\u03bd\u03bf\u03c5\u03ac\u03c1\u03b9\u03bf\u03c2"\
+        "\u03a6\u03b5\u03b2\u03c1\u03bf\u03c5\u03ac\u03c1\u03b9\u03bf\u03c2"\
+        "\u039c\u03ac\u03c1\u03c4\u03b9\u03bf\u03c2"\
+        "\u0391\u03c0\u03c1\u03af\u03bb\u03b9\u03bf\u03c2"\
+        "\u039c\u03ac\u03ca\u03bf\u03c2"\
+        "\u0399\u03bf\u03cd\u03bd\u03b9\u03bf\u03c2"\
+        "\u0399\u03bf\u03cd\u03bb\u03b9\u03bf\u03c2"\
+        "\u0391\u03cd\u03b3\u03bf\u03c5\u03c3\u03c4\u03bf\u03c2"\
+        "\u03a3\u03b5\u03c0\u03c4\u03ad\u03bc\u03b2\u03c1\u03b9\u03bf\u03c2"\
+        "\u039f\u03ba\u03c4\u03ce\u03b2\u03c1\u03b9\u03bf\u03c2"\
+        "\u039d\u03bf\u03ad\u03bc\u03b2\u03c1\u03b9\u03bf\u03c2"\
+        "\u0394\u03b5\u03ba\u03ad\u03bc\u03b2\u03c1\u03b9\u03bf\u03c2"\
+        ""]
+    ::msgcat::mcset el AM "\u03c0\u03bc"
+    ::msgcat::mcset el PM "\u03bc\u03bc"
+    ::msgcat::mcset el DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset el TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset el DATE_TIME_FORMAT "%e/%m/%Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/en_au.msg b/library/msgs/en_au.msg
new file mode 100755
index 0000000..7f9870c
--- /dev/null
+++ b/library/msgs/en_au.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_AU DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset en_AU TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset en_AU TIME_FORMAT_12 "%I:%M:%S %P %z"
+    ::msgcat::mcset en_AU DATE_TIME_FORMAT "%e/%m/%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/en_be.msg b/library/msgs/en_be.msg
new file mode 100755
index 0000000..5072986
--- /dev/null
+++ b/library/msgs/en_be.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_BE DATE_FORMAT "%d %b %Y"
+    ::msgcat::mcset en_BE TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset en_BE TIME_FORMAT_12 "%k h %M min %S s %z"
+    ::msgcat::mcset en_BE DATE_TIME_FORMAT "%d %b %Y %k:%M:%S %z"
+}
diff --git a/library/msgs/en_bw.msg b/library/msgs/en_bw.msg
new file mode 100755
index 0000000..8fd20c7
--- /dev/null
+++ b/library/msgs/en_bw.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_BW DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset en_BW TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset en_BW DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/en_ca.msg b/library/msgs/en_ca.msg
new file mode 100755
index 0000000..278efe7
--- /dev/null
+++ b/library/msgs/en_ca.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_CA DATE_FORMAT "%d/%m/%y"
+    ::msgcat::mcset en_CA TIME_FORMAT "%r"
+    ::msgcat::mcset en_CA TIME_FORMAT_12 "%I:%M:%S %p"
+    ::msgcat::mcset en_CA DATE_TIME_FORMAT "%a %d %b %Y %r %z"
+}
diff --git a/library/msgs/en_gb.msg b/library/msgs/en_gb.msg
new file mode 100755
index 0000000..5c61c43
--- /dev/null
+++ b/library/msgs/en_gb.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_GB DATE_FORMAT "%d/%m/%y"
+    ::msgcat::mcset en_GB TIME_FORMAT "%T"
+    ::msgcat::mcset en_GB TIME_FORMAT_12 "%T"
+    ::msgcat::mcset en_GB DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/en_hk.msg b/library/msgs/en_hk.msg
new file mode 100755
index 0000000..8b33bc0
--- /dev/null
+++ b/library/msgs/en_hk.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_HK AM "AM"
+    ::msgcat::mcset en_HK PM "PM"
+    ::msgcat::mcset en_HK DATE_FORMAT "%B %e, %Y"
+    ::msgcat::mcset en_HK TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset en_HK DATE_TIME_FORMAT "%B %e, %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/en_ie.msg b/library/msgs/en_ie.msg
new file mode 100755
index 0000000..ba621cf
--- /dev/null
+++ b/library/msgs/en_ie.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_IE DATE_FORMAT "%d/%m/%y"
+    ::msgcat::mcset en_IE TIME_FORMAT "%T"
+    ::msgcat::mcset en_IE TIME_FORMAT_12 "%T"
+    ::msgcat::mcset en_IE DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/en_in.msg b/library/msgs/en_in.msg
new file mode 100755
index 0000000..a1f155d
--- /dev/null
+++ b/library/msgs/en_in.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_IN AM "AM"
+    ::msgcat::mcset en_IN PM "PM"
+    ::msgcat::mcset en_IN DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset en_IN TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset en_IN DATE_TIME_FORMAT "%d %B %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/en_nz.msg b/library/msgs/en_nz.msg
new file mode 100755
index 0000000..b419017
--- /dev/null
+++ b/library/msgs/en_nz.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_NZ DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset en_NZ TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset en_NZ TIME_FORMAT_12 "%I:%M:%S %P %z"
+    ::msgcat::mcset en_NZ DATE_TIME_FORMAT "%e/%m/%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/en_ph.msg b/library/msgs/en_ph.msg
new file mode 100755
index 0000000..682666d
--- /dev/null
+++ b/library/msgs/en_ph.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_PH AM "AM"
+    ::msgcat::mcset en_PH PM "PM"
+    ::msgcat::mcset en_PH DATE_FORMAT "%B %e, %Y"
+    ::msgcat::mcset en_PH TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset en_PH DATE_TIME_FORMAT "%B %e, %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/en_sg.msg b/library/msgs/en_sg.msg
new file mode 100755
index 0000000..4dc5b1d
--- /dev/null
+++ b/library/msgs/en_sg.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_SG DATE_FORMAT "%d %b %Y"
+    ::msgcat::mcset en_SG TIME_FORMAT_12 "%P %I:%M:%S"
+    ::msgcat::mcset en_SG DATE_TIME_FORMAT "%d %b %Y %P %I:%M:%S %z"
+}
diff --git a/library/msgs/en_za.msg b/library/msgs/en_za.msg
new file mode 100755
index 0000000..fe43797
--- /dev/null
+++ b/library/msgs/en_za.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_ZA DATE_FORMAT "%Y/%m/%d"
+    ::msgcat::mcset en_ZA TIME_FORMAT_12 "%I:%M:%S"
+    ::msgcat::mcset en_ZA DATE_TIME_FORMAT "%Y/%m/%d %I:%M:%S %z"
+}
diff --git a/library/msgs/en_zw.msg b/library/msgs/en_zw.msg
new file mode 100755
index 0000000..2a5804f
--- /dev/null
+++ b/library/msgs/en_zw.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset en_ZW DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset en_ZW TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset en_ZW DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/eo.msg b/library/msgs/eo.msg
new file mode 100755
index 0000000..1d2a24f
--- /dev/null
+++ b/library/msgs/eo.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset eo DAYS_OF_WEEK_ABBREV [list \
+        "di"\
+        "lu"\
+        "ma"\
+        "me"\
+        "\u0135a"\
+        "ve"\
+        "sa"]
+    ::msgcat::mcset eo DAYS_OF_WEEK_FULL [list \
+        "diman\u0109o"\
+        "lundo"\
+        "mardo"\
+        "merkredo"\
+        "\u0135a\u016ddo"\
+        "vendredo"\
+        "sabato"]
+    ::msgcat::mcset eo MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "maj"\
+        "jun"\
+        "jul"\
+        "a\u016dg"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset eo MONTHS_FULL [list \
+        "januaro"\
+        "februaro"\
+        "marto"\
+        "aprilo"\
+        "majo"\
+        "junio"\
+        "julio"\
+        "a\u016dgusto"\
+        "septembro"\
+        "oktobro"\
+        "novembro"\
+        "decembro"\
+        ""]
+    ::msgcat::mcset eo BCE "aK"
+    ::msgcat::mcset eo CE "pK"
+    ::msgcat::mcset eo AM "atm"
+    ::msgcat::mcset eo PM "ptm"
+    ::msgcat::mcset eo DATE_FORMAT "%Y-%b-%d"
+    ::msgcat::mcset eo TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset eo DATE_TIME_FORMAT "%Y-%b-%d %H:%M:%S %z"
+}
diff --git a/library/msgs/es.msg b/library/msgs/es.msg
new file mode 100755
index 0000000..a24f0a1
--- /dev/null
+++ b/library/msgs/es.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es DAYS_OF_WEEK_ABBREV [list \
+        "dom"\
+        "lun"\
+        "mar"\
+        "mi\u00e9"\
+        "jue"\
+        "vie"\
+        "s\u00e1b"]
+    ::msgcat::mcset es DAYS_OF_WEEK_FULL [list \
+        "domingo"\
+        "lunes"\
+        "martes"\
+        "mi\u00e9rcoles"\
+        "jueves"\
+        "viernes"\
+        "s\u00e1bado"]
+    ::msgcat::mcset es MONTHS_ABBREV [list \
+        "ene"\
+        "feb"\
+        "mar"\
+        "abr"\
+        "may"\
+        "jun"\
+        "jul"\
+        "ago"\
+        "sep"\
+        "oct"\
+        "nov"\
+        "dic"\
+        ""]
+    ::msgcat::mcset es MONTHS_FULL [list \
+        "enero"\
+        "febrero"\
+        "marzo"\
+        "abril"\
+        "mayo"\
+        "junio"\
+        "julio"\
+        "agosto"\
+        "septiembre"\
+        "octubre"\
+        "noviembre"\
+        "diciembre"\
+        ""]
+    ::msgcat::mcset es BCE "a.C."
+    ::msgcat::mcset es CE "d.C."
+    ::msgcat::mcset es DATE_FORMAT "%e de %B de %Y"
+    ::msgcat::mcset es TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset es DATE_TIME_FORMAT "%e de %B de %Y %k:%M:%S %z"
+}
diff --git a/library/msgs/es_ar.msg b/library/msgs/es_ar.msg
new file mode 100755
index 0000000..7d35027
--- /dev/null
+++ b/library/msgs/es_ar.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_AR DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_AR TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset es_AR DATE_TIME_FORMAT "%d/%m/%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/es_bo.msg b/library/msgs/es_bo.msg
new file mode 100755
index 0000000..498ad0d
--- /dev/null
+++ b/library/msgs/es_bo.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_BO DATE_FORMAT "%d-%m-%Y"
+    ::msgcat::mcset es_BO TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_BO DATE_TIME_FORMAT "%d-%m-%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_cl.msg b/library/msgs/es_cl.msg
new file mode 100755
index 0000000..31d465c
--- /dev/null
+++ b/library/msgs/es_cl.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_CL DATE_FORMAT "%d-%m-%Y"
+    ::msgcat::mcset es_CL TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_CL DATE_TIME_FORMAT "%d-%m-%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_co.msg b/library/msgs/es_co.msg
new file mode 100755
index 0000000..77e57f0
--- /dev/null
+++ b/library/msgs/es_co.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_CO DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset es_CO TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_CO DATE_TIME_FORMAT "%e/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_cr.msg b/library/msgs/es_cr.msg
new file mode 100755
index 0000000..7a652fa
--- /dev/null
+++ b/library/msgs/es_cr.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_CR DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_CR TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_CR DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_do.msg b/library/msgs/es_do.msg
new file mode 100755
index 0000000..0e283da
--- /dev/null
+++ b/library/msgs/es_do.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_DO DATE_FORMAT "%m/%d/%Y"
+    ::msgcat::mcset es_DO TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_DO DATE_TIME_FORMAT "%m/%d/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_ec.msg b/library/msgs/es_ec.msg
new file mode 100755
index 0000000..9e921e0
--- /dev/null
+++ b/library/msgs/es_ec.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_EC DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_EC TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_EC DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_gt.msg b/library/msgs/es_gt.msg
new file mode 100755
index 0000000..ecd6faf
--- /dev/null
+++ b/library/msgs/es_gt.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_GT DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset es_GT TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_GT DATE_TIME_FORMAT "%e/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_hn.msg b/library/msgs/es_hn.msg
new file mode 100755
index 0000000..a758ca2
--- /dev/null
+++ b/library/msgs/es_hn.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_HN DATE_FORMAT "%m-%d-%Y"
+    ::msgcat::mcset es_HN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_HN DATE_TIME_FORMAT "%m-%d-%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_mx.msg b/library/msgs/es_mx.msg
new file mode 100755
index 0000000..7cfb545
--- /dev/null
+++ b/library/msgs/es_mx.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_MX DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset es_MX TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_MX DATE_TIME_FORMAT "%e/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_ni.msg b/library/msgs/es_ni.msg
new file mode 100755
index 0000000..7c39495
--- /dev/null
+++ b/library/msgs/es_ni.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_NI DATE_FORMAT "%m-%d-%Y"
+    ::msgcat::mcset es_NI TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_NI DATE_TIME_FORMAT "%m-%d-%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_pa.msg b/library/msgs/es_pa.msg
new file mode 100755
index 0000000..cecacdc
--- /dev/null
+++ b/library/msgs/es_pa.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_PA DATE_FORMAT "%m/%d/%Y"
+    ::msgcat::mcset es_PA TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_PA DATE_TIME_FORMAT "%m/%d/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_pe.msg b/library/msgs/es_pe.msg
new file mode 100755
index 0000000..9f90595
--- /dev/null
+++ b/library/msgs/es_pe.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_PE DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_PE TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_PE DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_pr.msg b/library/msgs/es_pr.msg
new file mode 100755
index 0000000..8511b12
--- /dev/null
+++ b/library/msgs/es_pr.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_PR DATE_FORMAT "%m-%d-%Y"
+    ::msgcat::mcset es_PR TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_PR DATE_TIME_FORMAT "%m-%d-%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_py.msg b/library/msgs/es_py.msg
new file mode 100755
index 0000000..aa93d36
--- /dev/null
+++ b/library/msgs/es_py.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_PY DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_PY TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_PY DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_sv.msg b/library/msgs/es_sv.msg
new file mode 100755
index 0000000..fc7954d
--- /dev/null
+++ b/library/msgs/es_sv.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_SV DATE_FORMAT "%m-%d-%Y"
+    ::msgcat::mcset es_SV TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_SV DATE_TIME_FORMAT "%m-%d-%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_uy.msg b/library/msgs/es_uy.msg
new file mode 100755
index 0000000..b33525c
--- /dev/null
+++ b/library/msgs/es_uy.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_UY DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_UY TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_UY DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/es_ve.msg b/library/msgs/es_ve.msg
new file mode 100755
index 0000000..7c2a7b0
--- /dev/null
+++ b/library/msgs/es_ve.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset es_VE DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset es_VE TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset es_VE DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/et.msg b/library/msgs/et.msg
new file mode 100755
index 0000000..8d32e9e
--- /dev/null
+++ b/library/msgs/et.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset et DAYS_OF_WEEK_ABBREV [list \
+        "P"\
+        "E"\
+        "T"\
+        "K"\
+        "N"\
+        "R"\
+        "L"]
+    ::msgcat::mcset et DAYS_OF_WEEK_FULL [list \
+        "p\u00fchap\u00e4ev"\
+        "esmasp\u00e4ev"\
+        "teisip\u00e4ev"\
+        "kolmap\u00e4ev"\
+        "neljap\u00e4ev"\
+        "reede"\
+        "laup\u00e4ev"]
+    ::msgcat::mcset et MONTHS_ABBREV [list \
+        "Jaan"\
+        "Veebr"\
+        "M\u00e4rts"\
+        "Apr"\
+        "Mai"\
+        "Juuni"\
+        "Juuli"\
+        "Aug"\
+        "Sept"\
+        "Okt"\
+        "Nov"\
+        "Dets"\
+        ""]
+    ::msgcat::mcset et MONTHS_FULL [list \
+        "Jaanuar"\
+        "Veebruar"\
+        "M\u00e4rts"\
+        "Aprill"\
+        "Mai"\
+        "Juuni"\
+        "Juuli"\
+        "August"\
+        "September"\
+        "Oktoober"\
+        "November"\
+        "Detsember"\
+        ""]
+    ::msgcat::mcset et BCE "e.m.a."
+    ::msgcat::mcset et CE "m.a.j."
+    ::msgcat::mcset et DATE_FORMAT "%e-%m-%Y"
+    ::msgcat::mcset et TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset et DATE_TIME_FORMAT "%e-%m-%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/eu.msg b/library/msgs/eu.msg
new file mode 100755
index 0000000..cf708b6
--- /dev/null
+++ b/library/msgs/eu.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset eu DAYS_OF_WEEK_ABBREV [list \
+        "igandea"\
+        "astelehena"\
+        "asteartea"\
+        "asteazkena"\
+        "osteguna"\
+        "ostirala"\
+        "larunbata"]
+    ::msgcat::mcset eu DAYS_OF_WEEK_FULL [list \
+        "igandea"\
+        "astelehena"\
+        "asteartea"\
+        "asteazkena"\
+        "osteguna"\
+        "ostirala"\
+        "larunbata"]
+    ::msgcat::mcset eu MONTHS_ABBREV [list \
+        "urt"\
+        "ots"\
+        "mar"\
+        "api"\
+        "mai"\
+        "eka"\
+        "uzt"\
+        "abu"\
+        "ira"\
+        "urr"\
+        "aza"\
+        "abe"\
+        ""]
+    ::msgcat::mcset eu MONTHS_FULL [list \
+        "urtarrila"\
+        "otsaila"\
+        "martxoa"\
+        "apirila"\
+        "maiatza"\
+        "ekaina"\
+        "uztaila"\
+        "abuztua"\
+        "iraila"\
+        "urria"\
+        "azaroa"\
+        "abendua"\
+        ""]
+}
diff --git a/library/msgs/eu_es.msg b/library/msgs/eu_es.msg
new file mode 100755
index 0000000..2694418
--- /dev/null
+++ b/library/msgs/eu_es.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset eu_ES DATE_FORMAT "%a, %Yeko %bren %da"
+    ::msgcat::mcset eu_ES TIME_FORMAT "%T"
+    ::msgcat::mcset eu_ES TIME_FORMAT_12 "%T"
+    ::msgcat::mcset eu_ES DATE_TIME_FORMAT "%y-%m-%d %T %z"
+}
diff --git a/library/msgs/fa.msg b/library/msgs/fa.msg
new file mode 100755
index 0000000..89b2f90
--- /dev/null
+++ b/library/msgs/fa.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fa DAYS_OF_WEEK_ABBREV [list \
+        "\u06cc\u2214"\
+        "\u062f\u2214"\
+        "\u0633\u2214"\
+        "\u0686\u2214"\
+        "\u067e\u2214"\
+        "\u062c\u2214"\
+        "\u0634\u2214"]
+    ::msgcat::mcset fa DAYS_OF_WEEK_FULL [list \
+        "\u06cc\u06cc\u200c\u0634\u0646\u0628\u0647"\
+        "\u062f\u0648\u0634\u0646\u0628\u0647"\
+        "\u0633\u0647\u200c\u0634\u0646\u0628\u0647"\
+        "\u0686\u0647\u0627\u0631\u0634\u0646\u0628\u0647"\
+        "\u067e\u0646\u062c\u200c\u0634\u0646\u0628\u0647"\
+        "\u062c\u0645\u0639\u0647"\
+        "\u0634\u0646\u0628\u0647"]
+    ::msgcat::mcset fa MONTHS_ABBREV [list \
+        "\u0698\u0627\u0646"\
+        "\u0641\u0648\u0631"\
+        "\u0645\u0627\u0631"\
+        "\u0622\u0648\u0631"\
+        "\u0645\u0640\u0647"\
+        "\u0698\u0648\u0646"\
+        "\u0698\u0648\u06cc"\
+        "\u0627\u0648\u062a"\
+        "\u0633\u067e\u062a"\
+        "\u0627\u0643\u062a"\
+        "\u0646\u0648\u0627"\
+        "\u062f\u0633\u0627"\
+        ""]
+    ::msgcat::mcset fa MONTHS_FULL [list \
+        "\u0698\u0627\u0646\u0648\u06cc\u0647"\
+        "\u0641\u0648\u0631\u0648\u06cc\u0647"\
+        "\u0645\u0627\u0631\u0633"\
+        "\u0622\u0648\u0631\u06cc\u0644"\
+        "\u0645\u0647"\
+        "\u0698\u0648\u0626\u0646"\
+        "\u0698\u0648\u0626\u06cc\u0647"\
+        "\u0627\u0648\u062a"\
+        "\u0633\u067e\u062a\u0627\u0645\u0628\u0631"\
+        "\u0627\u0643\u062a\u0628\u0631"\
+        "\u0646\u0648\u0627\u0645\u0628\u0631"\
+        "\u062f\u0633\u0627\u0645\u0628\u0631"\
+        ""]
+}
diff --git a/library/msgs/fa_in.msg b/library/msgs/fa_in.msg
new file mode 100755
index 0000000..adc9e91
--- /dev/null
+++ b/library/msgs/fa_in.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fa_IN DAYS_OF_WEEK_ABBREV [list \
+        "\u06cc\u2214"\
+        "\u062f\u2214"\
+        "\u0633\u2214"\
+        "\u0686\u2214"\
+        "\u067e\u2214"\
+        "\u062c\u2214"\
+        "\u0634\u2214"]
+    ::msgcat::mcset fa_IN DAYS_OF_WEEK_FULL [list \
+        "\u06cc\u06cc\u200c\u0634\u0646\u0628\u0647"\
+        "\u062f\u0648\u0634\u0646\u0628\u0647"\
+        "\u0633\u0647\u200c\u0634\u0646\u0628\u0647"\
+        "\u0686\u0647\u0627\u0631\u0634\u0646\u0628\u0647"\
+        "\u067e\u0646\u062c\u200c\u0634\u0646\u0628\u0647"\
+        "\u062c\u0645\u0639\u0647"\
+        "\u0634\u0646\u0628\u0647"]
+    ::msgcat::mcset fa_IN MONTHS_ABBREV [list \
+        "\u0698\u0627\u0646"\
+        "\u0641\u0648\u0631"\
+        "\u0645\u0627\u0631"\
+        "\u0622\u0648\u0631"\
+        "\u0645\u0640\u0647"\
+        "\u0698\u0648\u0646"\
+        "\u0698\u0648\u06cc"\
+        "\u0627\u0648\u062a"\
+        "\u0633\u067e\u062a"\
+        "\u0627\u0643\u062a"\
+        "\u0646\u0648\u0627"\
+        "\u062f\u0633\u0627"\
+        ""]
+    ::msgcat::mcset fa_IN MONTHS_FULL [list \
+        "\u0698\u0627\u0646\u0648\u06cc\u0647"\
+        "\u0641\u0648\u0631\u0648\u06cc\u0647"\
+        "\u0645\u0627\u0631\u0633"\
+        "\u0622\u0648\u0631\u06cc\u0644"\
+        "\u0645\u0647"\
+        "\u0698\u0648\u0626\u0646"\
+        "\u0698\u0648\u0626\u06cc\u0647"\
+        "\u0627\u0648\u062a"\
+        "\u0633\u067e\u062a\u0627\u0645\u0628\u0631"\
+        "\u0627\u0643\u062a\u0628\u0631"\
+        "\u0646\u0648\u0627\u0645\u0628\u0631"\
+        "\u062f\u0633\u0627\u0645\u0628\u0631"\
+        ""]
+    ::msgcat::mcset fa_IN AM "\u0635\u0628\u062d"
+    ::msgcat::mcset fa_IN PM "\u0639\u0635\u0631"
+    ::msgcat::mcset fa_IN DATE_FORMAT "%A %d %B %Y"
+    ::msgcat::mcset fa_IN TIME_FORMAT_12 "%I:%M:%S  %z"
+    ::msgcat::mcset fa_IN DATE_TIME_FORMAT "%A %d %B %Y %I:%M:%S  %z %z"
+}
diff --git a/library/msgs/fa_ir.msg b/library/msgs/fa_ir.msg
new file mode 100755
index 0000000..597ce9d
--- /dev/null
+++ b/library/msgs/fa_ir.msg
@@ -0,0 +1,9 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fa_IR AM "\u0635\u0628\u062d"
+    ::msgcat::mcset fa_IR PM "\u0639\u0635\u0631"
+    ::msgcat::mcset fa_IR DATE_FORMAT "%d\u2044%m\u2044%Y"
+    ::msgcat::mcset fa_IR TIME_FORMAT "%S:%M:%H"
+    ::msgcat::mcset fa_IR TIME_FORMAT_12 "%S:%M:%l %P"
+    ::msgcat::mcset fa_IR DATE_TIME_FORMAT "%d\u2044%m\u2044%Y %S:%M:%H %z"
+}
diff --git a/library/msgs/fi.msg b/library/msgs/fi.msg
new file mode 100755
index 0000000..acabba0
--- /dev/null
+++ b/library/msgs/fi.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fi DAYS_OF_WEEK_ABBREV [list \
+        "su"\
+        "ma"\
+        "ti"\
+        "ke"\
+        "to"\
+        "pe"\
+        "la"]
+    ::msgcat::mcset fi DAYS_OF_WEEK_FULL [list \
+        "sunnuntai"\
+        "maanantai"\
+        "tiistai"\
+        "keskiviikko"\
+        "torstai"\
+        "perjantai"\
+        "lauantai"]
+    ::msgcat::mcset fi MONTHS_ABBREV [list \
+        "tammi"\
+        "helmi"\
+        "maalis"\
+        "huhti"\
+        "touko"\
+        "kes\u00e4"\
+        "hein\u00e4"\
+        "elo"\
+        "syys"\
+        "loka"\
+        "marras"\
+        "joulu"\
+        ""]
+    ::msgcat::mcset fi MONTHS_FULL [list \
+        "tammikuu"\
+        "helmikuu"\
+        "maaliskuu"\
+        "huhtikuu"\
+        "toukokuu"\
+        "kes\u00e4kuu"\
+        "hein\u00e4kuu"\
+        "elokuu"\
+        "syyskuu"\
+        "lokakuu"\
+        "marraskuu"\
+        "joulukuu"\
+        ""]
+    ::msgcat::mcset fi DATE_FORMAT "%e.%m.%Y"
+    ::msgcat::mcset fi TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset fi DATE_TIME_FORMAT "%e.%m.%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/fo.msg b/library/msgs/fo.msg
new file mode 100755
index 0000000..4696e62
--- /dev/null
+++ b/library/msgs/fo.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fo DAYS_OF_WEEK_ABBREV [list \
+        "sun"\
+        "m\u00e1n"\
+        "t\u00fds"\
+        "mik"\
+        "h\u00f3s"\
+        "fr\u00ed"\
+        "ley"]
+    ::msgcat::mcset fo DAYS_OF_WEEK_FULL [list \
+        "sunnudagur"\
+        "m\u00e1nadagur"\
+        "t\u00fdsdagur"\
+        "mikudagur"\
+        "h\u00f3sdagur"\
+        "fr\u00edggjadagur"\
+        "leygardagur"]
+    ::msgcat::mcset fo MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "mai"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "des"\
+        ""]
+    ::msgcat::mcset fo MONTHS_FULL [list \
+        "januar"\
+        "februar"\
+        "mars"\
+        "apr\u00edl"\
+        "mai"\
+        "juni"\
+        "juli"\
+        "august"\
+        "september"\
+        "oktober"\
+        "november"\
+        "desember"\
+        ""]
+}
diff --git a/library/msgs/fo_fo.msg b/library/msgs/fo_fo.msg
new file mode 100755
index 0000000..2392b8e
--- /dev/null
+++ b/library/msgs/fo_fo.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fo_FO DATE_FORMAT "%d/%m-%Y"
+    ::msgcat::mcset fo_FO TIME_FORMAT "%T"
+    ::msgcat::mcset fo_FO TIME_FORMAT_12 "%T"
+    ::msgcat::mcset fo_FO DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/fr.msg b/library/msgs/fr.msg
new file mode 100755
index 0000000..55b19bf
--- /dev/null
+++ b/library/msgs/fr.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fr DAYS_OF_WEEK_ABBREV [list \
+        "dim."\
+        "lun."\
+        "mar."\
+        "mer."\
+        "jeu."\
+        "ven."\
+        "sam."]
+    ::msgcat::mcset fr DAYS_OF_WEEK_FULL [list \
+        "dimanche"\
+        "lundi"\
+        "mardi"\
+        "mercredi"\
+        "jeudi"\
+        "vendredi"\
+        "samedi"]
+    ::msgcat::mcset fr MONTHS_ABBREV [list \
+        "janv."\
+        "f\u00e9vr."\
+        "mars"\
+        "avr."\
+        "mai"\
+        "juin"\
+        "juil."\
+        "ao\u00fbt"\
+        "sept."\
+        "oct."\
+        "nov."\
+        "d\u00e9c."\
+        ""]
+    ::msgcat::mcset fr MONTHS_FULL [list \
+        "janvier"\
+        "f\u00e9vrier"\
+        "mars"\
+        "avril"\
+        "mai"\
+        "juin"\
+        "juillet"\
+        "ao\u00fbt"\
+        "septembre"\
+        "octobre"\
+        "novembre"\
+        "d\u00e9cembre"\
+        ""]
+    ::msgcat::mcset fr BCE "av. J.-C."
+    ::msgcat::mcset fr CE "ap. J.-C."
+    ::msgcat::mcset fr DATE_FORMAT "%e %B %Y"
+    ::msgcat::mcset fr TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset fr DATE_TIME_FORMAT "%e %B %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/fr_be.msg b/library/msgs/fr_be.msg
new file mode 100755
index 0000000..cdb13bd
--- /dev/null
+++ b/library/msgs/fr_be.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fr_BE DATE_FORMAT "%d/%m/%y"
+    ::msgcat::mcset fr_BE TIME_FORMAT "%T"
+    ::msgcat::mcset fr_BE TIME_FORMAT_12 "%T"
+    ::msgcat::mcset fr_BE DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/fr_ca.msg b/library/msgs/fr_ca.msg
new file mode 100755
index 0000000..00ccfff
--- /dev/null
+++ b/library/msgs/fr_ca.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fr_CA DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset fr_CA TIME_FORMAT "%T"
+    ::msgcat::mcset fr_CA TIME_FORMAT_12 "%T"
+    ::msgcat::mcset fr_CA DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/fr_ch.msg b/library/msgs/fr_ch.msg
new file mode 100755
index 0000000..7e2bac7
--- /dev/null
+++ b/library/msgs/fr_ch.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset fr_CH DATE_FORMAT "%d. %m. %y"
+    ::msgcat::mcset fr_CH TIME_FORMAT "%T"
+    ::msgcat::mcset fr_CH TIME_FORMAT_12 "%T"
+    ::msgcat::mcset fr_CH DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/ga.msg b/library/msgs/ga.msg
new file mode 100755
index 0000000..6edf13a
--- /dev/null
+++ b/library/msgs/ga.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ga DAYS_OF_WEEK_ABBREV [list \
+        "Domh"\
+        "Luan"\
+        "M\u00e1irt"\
+        "C\u00e9ad"\
+        "D\u00e9ar"\
+        "Aoine"\
+        "Sath"]
+    ::msgcat::mcset ga DAYS_OF_WEEK_FULL [list \
+        "D\u00e9 Domhnaigh"\
+        "D\u00e9 Luain"\
+        "D\u00e9 M\u00e1irt"\
+        "D\u00e9 C\u00e9adaoin"\
+        "D\u00e9ardaoin"\
+        "D\u00e9 hAoine"\
+        "D\u00e9 Sathairn"]
+    ::msgcat::mcset ga MONTHS_ABBREV [list \
+        "Ean"\
+        "Feabh"\
+        "M\u00e1rta"\
+        "Aib"\
+        "Beal"\
+        "Meith"\
+        "I\u00fail"\
+        "L\u00fan"\
+        "MF\u00f3mh"\
+        "DF\u00f3mh"\
+        "Samh"\
+        "Noll"\
+        ""]
+    ::msgcat::mcset ga MONTHS_FULL [list \
+        "Ean\u00e1ir"\
+        "Feabhra"\
+        "M\u00e1rta"\
+        "Aibre\u00e1n"\
+        "M\u00ed na Bealtaine"\
+        "Meith"\
+        "I\u00fail"\
+        "L\u00fanasa"\
+        "Me\u00e1n F\u00f3mhair"\
+        "Deireadh F\u00f3mhair"\
+        "M\u00ed na Samhna"\
+        "M\u00ed na Nollag"\
+        ""]
+}
diff --git a/library/msgs/ga_ie.msg b/library/msgs/ga_ie.msg
new file mode 100755
index 0000000..b6acbbc
--- /dev/null
+++ b/library/msgs/ga_ie.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ga_IE DATE_FORMAT "%d.%m.%y"
+    ::msgcat::mcset ga_IE TIME_FORMAT "%T"
+    ::msgcat::mcset ga_IE TIME_FORMAT_12 "%T"
+    ::msgcat::mcset ga_IE DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/gl.msg b/library/msgs/gl.msg
new file mode 100755
index 0000000..4b869e8
--- /dev/null
+++ b/library/msgs/gl.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset gl DAYS_OF_WEEK_ABBREV [list \
+        "Dom"\
+        "Lun"\
+        "Mar"\
+        "M\u00e9r"\
+        "Xov"\
+        "Ven"\
+        "S\u00e1b"]
+    ::msgcat::mcset gl DAYS_OF_WEEK_FULL [list \
+        "Domingo"\
+        "Luns"\
+        "Martes"\
+        "M\u00e9rcores"\
+        "Xoves"\
+        "Venres"\
+        "S\u00e1bado"]
+    ::msgcat::mcset gl MONTHS_ABBREV [list \
+        "Xan"\
+        "Feb"\
+        "Mar"\
+        "Abr"\
+        "Mai"\
+        "Xu\u00f1"\
+        "Xul"\
+        "Ago"\
+        "Set"\
+        "Out"\
+        "Nov"\
+        "Dec"\
+        ""]
+    ::msgcat::mcset gl MONTHS_FULL [list \
+        "Xaneiro"\
+        "Febreiro"\
+        "Marzo"\
+        "Abril"\
+        "Maio"\
+        "Xu\u00f1o"\
+        "Xullo"\
+        "Agosto"\
+        "Setembro"\
+        "Outubro"\
+        "Novembro"\
+        "Decembro"\
+        ""]
+}
diff --git a/library/msgs/gl_es.msg b/library/msgs/gl_es.msg
new file mode 100755
index 0000000..d4ed270
--- /dev/null
+++ b/library/msgs/gl_es.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset gl_ES DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset gl_ES TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset gl_ES DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/gv.msg b/library/msgs/gv.msg
new file mode 100755
index 0000000..7d332ad
--- /dev/null
+++ b/library/msgs/gv.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset gv DAYS_OF_WEEK_ABBREV [list \
+        "Jed"\
+        "Jel"\
+        "Jem"\
+        "Jerc"\
+        "Jerd"\
+        "Jeh"\
+        "Jes"]
+    ::msgcat::mcset gv DAYS_OF_WEEK_FULL [list \
+        "Jedoonee"\
+        "Jelhein"\
+        "Jemayrt"\
+        "Jercean"\
+        "Jerdein"\
+        "Jeheiney"\
+        "Jesarn"]
+    ::msgcat::mcset gv MONTHS_ABBREV [list \
+        "J-guer"\
+        "T-arree"\
+        "Mayrnt"\
+        "Avrril"\
+        "Boaldyn"\
+        "M-souree"\
+        "J-souree"\
+        "Luanistyn"\
+        "M-fouyir"\
+        "J-fouyir"\
+        "M.Houney"\
+        "M.Nollick"\
+        ""]
+    ::msgcat::mcset gv MONTHS_FULL [list \
+        "Jerrey-geuree"\
+        "Toshiaght-arree"\
+        "Mayrnt"\
+        "Averil"\
+        "Boaldyn"\
+        "Mean-souree"\
+        "Jerrey-souree"\
+        "Luanistyn"\
+        "Mean-fouyir"\
+        "Jerrey-fouyir"\
+        "Mee Houney"\
+        "Mee ny Nollick"\
+        ""]
+}
diff --git a/library/msgs/gv_gb.msg b/library/msgs/gv_gb.msg
new file mode 100755
index 0000000..5e96e6f
--- /dev/null
+++ b/library/msgs/gv_gb.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset gv_GB DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset gv_GB TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset gv_GB DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/he.msg b/library/msgs/he.msg
new file mode 100755
index 0000000..4fd921d
--- /dev/null
+++ b/library/msgs/he.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset he DAYS_OF_WEEK_ABBREV [list \
+        "\u05d0"\
+        "\u05d1"\
+        "\u05d2"\
+        "\u05d3"\
+        "\u05d4"\
+        "\u05d5"\
+        "\u05e9"]
+    ::msgcat::mcset he DAYS_OF_WEEK_FULL [list \
+        "\u05d9\u05d5\u05dd \u05e8\u05d0\u05e9\u05d5\u05df"\
+        "\u05d9\u05d5\u05dd \u05e9\u05e0\u05d9"\
+        "\u05d9\u05d5\u05dd \u05e9\u05dc\u05d9\u05e9\u05d9"\
+        "\u05d9\u05d5\u05dd \u05e8\u05d1\u05d9\u05e2\u05d9"\
+        "\u05d9\u05d5\u05dd \u05d7\u05de\u05d9\u05e9\u05d9"\
+        "\u05d9\u05d5\u05dd \u05e9\u05d9\u05e9\u05d9"\
+        "\u05e9\u05d1\u05ea"]
+    ::msgcat::mcset he MONTHS_ABBREV [list \
+        "\u05d9\u05e0\u05d5"\
+        "\u05e4\u05d1\u05e8"\
+        "\u05de\u05e8\u05e5"\
+        "\u05d0\u05e4\u05e8"\
+        "\u05de\u05d0\u05d9"\
+        "\u05d9\u05d5\u05e0"\
+        "\u05d9\u05d5\u05dc"\
+        "\u05d0\u05d5\u05d2"\
+        "\u05e1\u05e4\u05d8"\
+        "\u05d0\u05d5\u05e7"\
+        "\u05e0\u05d5\u05d1"\
+        "\u05d3\u05e6\u05de"\
+        ""]
+    ::msgcat::mcset he MONTHS_FULL [list \
+        "\u05d9\u05e0\u05d5\u05d0\u05e8"\
+        "\u05e4\u05d1\u05e8\u05d5\u05d0\u05e8"\
+        "\u05de\u05e8\u05e5"\
+        "\u05d0\u05e4\u05e8\u05d9\u05dc"\
+        "\u05de\u05d0\u05d9"\
+        "\u05d9\u05d5\u05e0\u05d9"\
+        "\u05d9\u05d5\u05dc\u05d9"\
+        "\u05d0\u05d5\u05d2\u05d5\u05e1\u05d8"\
+        "\u05e1\u05e4\u05d8\u05de\u05d1\u05e8"\
+        "\u05d0\u05d5\u05e7\u05d8\u05d5\u05d1\u05e8"\
+        "\u05e0\u05d5\u05d1\u05de\u05d1\u05e8"\
+        "\u05d3\u05e6\u05de\u05d1\u05e8"\
+        ""]
+    ::msgcat::mcset he BCE "\u05dc\u05e1\u05d4\u0022\u05e0"
+    ::msgcat::mcset he CE "\u05dc\u05e4\u05e1\u05d4\u0022\u05e0"
+    ::msgcat::mcset he DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset he TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset he DATE_TIME_FORMAT "%d/%m/%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/hi.msg b/library/msgs/hi.msg
new file mode 100755
index 0000000..50c9fb8
--- /dev/null
+++ b/library/msgs/hi.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset hi DAYS_OF_WEEK_FULL [list \
+        "\u0930\u0935\u093f\u0935\u093e\u0930"\
+        "\u0938\u094b\u092e\u0935\u093e\u0930"\
+        "\u092e\u0902\u0917\u0932\u0935\u093e\u0930"\
+        "\u092c\u0941\u0927\u0935\u093e\u0930"\
+        "\u0917\u0941\u0930\u0941\u0935\u093e\u0930"\
+        "\u0936\u0941\u0915\u094d\u0930\u0935\u093e\u0930"\
+        "\u0936\u0928\u093f\u0935\u093e\u0930"]
+    ::msgcat::mcset hi MONTHS_ABBREV [list \
+        "\u091c\u0928\u0935\u0930\u0940"\
+        "\u092b\u093c\u0930\u0935\u0930\u0940"\
+        "\u092e\u093e\u0930\u094d\u091a"\
+        "\u0905\u092a\u094d\u0930\u0947\u0932"\
+        "\u092e\u0908"\
+        "\u091c\u0942\u0928"\
+        "\u091c\u0941\u0932\u093e\u0908"\
+        "\u0905\u0917\u0938\u094d\u0924"\
+        "\u0938\u093f\u0924\u092e\u094d\u092c\u0930"\
+        "\u0905\u0915\u094d\u091f\u0942\u092c\u0930"\
+        "\u0928\u0935\u092e\u094d\u092c\u0930"\
+        "\u0926\u093f\u0938\u092e\u094d\u092c\u0930"]
+    ::msgcat::mcset hi MONTHS_FULL [list \
+        "\u091c\u0928\u0935\u0930\u0940"\
+        "\u092b\u093c\u0930\u0935\u0930\u0940"\
+        "\u092e\u093e\u0930\u094d\u091a"\
+        "\u0905\u092a\u094d\u0930\u0947\u0932"\
+        "\u092e\u0908"\
+        "\u091c\u0942\u0928"\
+        "\u091c\u0941\u0932\u093e\u0908"\
+        "\u0905\u0917\u0938\u094d\u0924"\
+        "\u0938\u093f\u0924\u092e\u094d\u092c\u0930"\
+        "\u0905\u0915\u094d\u091f\u0942\u092c\u0930"\
+        "\u0928\u0935\u092e\u094d\u092c\u0930"\
+        "\u0926\u093f\u0938\u092e\u094d\u092c\u0930"]
+    ::msgcat::mcset hi AM "\u0908\u0938\u093e\u092a\u0942\u0930\u094d\u0935"
+    ::msgcat::mcset hi PM "."
+}
diff --git a/library/msgs/hi_in.msg b/library/msgs/hi_in.msg
new file mode 100755
index 0000000..239793f
--- /dev/null
+++ b/library/msgs/hi_in.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset hi_IN DATE_FORMAT "%d %M %Y"
+    ::msgcat::mcset hi_IN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset hi_IN DATE_TIME_FORMAT "%d %M %Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/hr.msg b/library/msgs/hr.msg
new file mode 100755
index 0000000..cec145b
--- /dev/null
+++ b/library/msgs/hr.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset hr DAYS_OF_WEEK_ABBREV [list \
+        "ned"\
+        "pon"\
+        "uto"\
+        "sri"\
+        "\u010det"\
+        "pet"\
+        "sub"]
+    ::msgcat::mcset hr DAYS_OF_WEEK_FULL [list \
+        "nedjelja"\
+        "ponedjeljak"\
+        "utorak"\
+        "srijeda"\
+        "\u010detvrtak"\
+        "petak"\
+        "subota"]
+    ::msgcat::mcset hr MONTHS_ABBREV [list \
+        "sij"\
+        "vel"\
+        "o\u017eu"\
+        "tra"\
+        "svi"\
+        "lip"\
+        "srp"\
+        "kol"\
+        "ruj"\
+        "lis"\
+        "stu"\
+        "pro"\
+        ""]
+    ::msgcat::mcset hr MONTHS_FULL [list \
+        "sije\u010danj"\
+        "velja\u010da"\
+        "o\u017eujak"\
+        "travanj"\
+        "svibanj"\
+        "lipanj"\
+        "srpanj"\
+        "kolovoz"\
+        "rujan"\
+        "listopad"\
+        "studeni"\
+        "prosinac"\
+        ""]
+    ::msgcat::mcset hr DATE_FORMAT "%Y.%m.%d"
+    ::msgcat::mcset hr TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset hr DATE_TIME_FORMAT "%Y.%m.%d %H:%M:%S %z"
+}
diff --git a/library/msgs/hu.msg b/library/msgs/hu.msg
new file mode 100755
index 0000000..e5e68d9
--- /dev/null
+++ b/library/msgs/hu.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset hu DAYS_OF_WEEK_ABBREV [list \
+        "V"\
+        "H"\
+        "K"\
+        "Sze"\
+        "Cs"\
+        "P"\
+        "Szo"]
+    ::msgcat::mcset hu DAYS_OF_WEEK_FULL [list \
+        "vas\u00e1rnap"\
+        "h\u00e9tf\u0151"\
+        "kedd"\
+        "szerda"\
+        "cs\u00fct\u00f6rt\u00f6k"\
+        "p\u00e9ntek"\
+        "szombat"]
+    ::msgcat::mcset hu MONTHS_ABBREV [list \
+        "jan."\
+        "febr."\
+        "m\u00e1rc."\
+        "\u00e1pr."\
+        "m\u00e1j."\
+        "j\u00fan."\
+        "j\u00fal."\
+        "aug."\
+        "szept."\
+        "okt."\
+        "nov."\
+        "dec."\
+        ""]
+    ::msgcat::mcset hu MONTHS_FULL [list \
+        "janu\u00e1r"\
+        "febru\u00e1r"\
+        "m\u00e1rcius"\
+        "\u00e1prilis"\
+        "m\u00e1jus"\
+        "j\u00fanius"\
+        "j\u00falius"\
+        "augusztus"\
+        "szeptember"\
+        "okt\u00f3ber"\
+        "november"\
+        "december"\
+        ""]
+    ::msgcat::mcset hu BCE "i.e."
+    ::msgcat::mcset hu CE "i.u."
+    ::msgcat::mcset hu AM "DE"
+    ::msgcat::mcset hu PM "DU"
+    ::msgcat::mcset hu DATE_FORMAT "%Y.%m.%d."
+    ::msgcat::mcset hu TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset hu DATE_TIME_FORMAT "%Y.%m.%d. %k:%M:%S %z"
+}
diff --git a/library/msgs/id.msg b/library/msgs/id.msg
new file mode 100755
index 0000000..17c6bb5
--- /dev/null
+++ b/library/msgs/id.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset id DAYS_OF_WEEK_ABBREV [list \
+        "Min"\
+        "Sen"\
+        "Sel"\
+        "Rab"\
+        "Kam"\
+        "Jum"\
+        "Sab"]
+    ::msgcat::mcset id DAYS_OF_WEEK_FULL [list \
+        "Minggu"\
+        "Senin"\
+        "Selasa"\
+        "Rabu"\
+        "Kamis"\
+        "Jumat"\
+        "Sabtu"]
+    ::msgcat::mcset id MONTHS_ABBREV [list \
+        "Jan"\
+        "Peb"\
+        "Mar"\
+        "Apr"\
+        "Mei"\
+        "Jun"\
+        "Jul"\
+        "Agu"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Des"\
+        ""]
+    ::msgcat::mcset id MONTHS_FULL [list \
+        "Januari"\
+        "Pebruari"\
+        "Maret"\
+        "April"\
+        "Mei"\
+        "Juni"\
+        "Juli"\
+        "Agustus"\
+        "September"\
+        "Oktober"\
+        "November"\
+        "Desember"\
+        ""]
+}
diff --git a/library/msgs/id_id.msg b/library/msgs/id_id.msg
new file mode 100755
index 0000000..bb672c1
--- /dev/null
+++ b/library/msgs/id_id.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset id_ID DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset id_ID TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset id_ID DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/is.msg b/library/msgs/is.msg
new file mode 100755
index 0000000..adc2d2a
--- /dev/null
+++ b/library/msgs/is.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset is DAYS_OF_WEEK_ABBREV [list \
+        "sun."\
+        "m\u00e1n."\
+        "\u00feri."\
+        "mi\u00f0."\
+        "fim."\
+        "f\u00f6s."\
+        "lau."]
+    ::msgcat::mcset is DAYS_OF_WEEK_FULL [list \
+        "sunnudagur"\
+        "m\u00e1nudagur"\
+        "\u00feri\u00f0judagur"\
+        "mi\u00f0vikudagur"\
+        "fimmtudagur"\
+        "f\u00f6studagur"\
+        "laugardagur"]
+    ::msgcat::mcset is MONTHS_ABBREV [list \
+        "jan."\
+        "feb."\
+        "mar."\
+        "apr."\
+        "ma\u00ed"\
+        "j\u00fan."\
+        "j\u00fal."\
+        "\u00e1g\u00fa."\
+        "sep."\
+        "okt."\
+        "n\u00f3v."\
+        "des."\
+        ""]
+    ::msgcat::mcset is MONTHS_FULL [list \
+        "jan\u00faar"\
+        "febr\u00faar"\
+        "mars"\
+        "apr\u00edl"\
+        "ma\u00ed"\
+        "j\u00fan\u00ed"\
+        "j\u00fal\u00ed"\
+        "\u00e1g\u00fast"\
+        "september"\
+        "okt\u00f3ber"\
+        "n\u00f3vember"\
+        "desember"\
+        ""]
+    ::msgcat::mcset is DATE_FORMAT "%e.%m.%Y"
+    ::msgcat::mcset is TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset is DATE_TIME_FORMAT "%e.%m.%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/it.msg b/library/msgs/it.msg
new file mode 100755
index 0000000..b641cde
--- /dev/null
+++ b/library/msgs/it.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset it DAYS_OF_WEEK_ABBREV [list \
+        "dom"\
+        "lun"\
+        "mar"\
+        "mer"\
+        "gio"\
+        "ven"\
+        "sab"]
+    ::msgcat::mcset it DAYS_OF_WEEK_FULL [list \
+        "domenica"\
+        "luned\u00ec"\
+        "marted\u00ec"\
+        "mercoled\u00ec"\
+        "gioved\u00ec"\
+        "venerd\u00ec"\
+        "sabato"]
+    ::msgcat::mcset it MONTHS_ABBREV [list \
+        "gen"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "mag"\
+        "giu"\
+        "lug"\
+        "ago"\
+        "set"\
+        "ott"\
+        "nov"\
+        "dic"\
+        ""]
+    ::msgcat::mcset it MONTHS_FULL [list \
+        "gennaio"\
+        "febbraio"\
+        "marzo"\
+        "aprile"\
+        "maggio"\
+        "giugno"\
+        "luglio"\
+        "agosto"\
+        "settembre"\
+        "ottobre"\
+        "novembre"\
+        "dicembre"\
+        ""]
+    ::msgcat::mcset it BCE "aC"
+    ::msgcat::mcset it CE "dC"
+    ::msgcat::mcset it AM "m."
+    ::msgcat::mcset it PM "p."
+    ::msgcat::mcset it DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset it TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset it DATE_TIME_FORMAT "%d %B %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/it_ch.msg b/library/msgs/it_ch.msg
new file mode 100755
index 0000000..b36ed36
--- /dev/null
+++ b/library/msgs/it_ch.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset it_CH DATE_FORMAT "%e. %B %Y"
+    ::msgcat::mcset it_CH TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset it_CH DATE_TIME_FORMAT "%e. %B %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/ja.msg b/library/msgs/ja.msg
new file mode 100755
index 0000000..2767665
--- /dev/null
+++ b/library/msgs/ja.msg
@@ -0,0 +1,44 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ja DAYS_OF_WEEK_ABBREV [list \
+        "\u65e5"\
+        "\u6708"\
+        "\u706b"\
+        "\u6c34"\
+        "\u6728"\
+        "\u91d1"\
+        "\u571f"]
+    ::msgcat::mcset ja DAYS_OF_WEEK_FULL [list \
+        "\u65e5\u66dc\u65e5"\
+        "\u6708\u66dc\u65e5"\
+        "\u706b\u66dc\u65e5"\
+        "\u6c34\u66dc\u65e5"\
+        "\u6728\u66dc\u65e5"\
+        "\u91d1\u66dc\u65e5"\
+        "\u571f\u66dc\u65e5"]
+    ::msgcat::mcset ja MONTHS_FULL [list \
+        "1\u6708"\
+        "2\u6708"\
+        "3\u6708"\
+        "4\u6708"\
+        "5\u6708"\
+        "6\u6708"\
+        "7\u6708"\
+        "8\u6708"\
+        "9\u6708"\
+        "10\u6708"\
+        "11\u6708"\
+        "12\u6708"]
+    ::msgcat::mcset ja BCE "\u7d00\u5143\u524d"
+    ::msgcat::mcset ja CE "\u897f\u66a6"
+    ::msgcat::mcset ja AM "\u5348\u524d"
+    ::msgcat::mcset ja PM "\u5348\u5f8c"
+    ::msgcat::mcset ja DATE_FORMAT "%Y/%m/%d"
+    ::msgcat::mcset ja TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset ja TIME_FORMAT_12 "%P %I:%M:%S"
+    ::msgcat::mcset ja DATE_TIME_FORMAT "%Y/%m/%d %k:%M:%S %z"
+    ::msgcat::mcset ja LOCALE_DATE_FORMAT "%EY\u5e74%m\u6708%d\u65e5"
+    ::msgcat::mcset ja LOCALE_TIME_FORMAT "%H\u6642%M\u5206%S\u79d2"
+    ::msgcat::mcset ja LOCALE_DATE_TIME_FORMAT "%EY\u5e74%m\u6708%d\u65e5 (%a) %H\u6642%M\u5206%S\u79d2 %z"
+    ::msgcat::mcset ja LOCALE_ERAS "\u007b-9223372036854775808 \u897f\u66a6 0\u007d \u007b-3061011600 \u660e\u6cbb 1867\u007d \u007b-1812186000 \u5927\u6b63 1911\u007d \u007b-1357635600 \u662d\u548c 1925\u007d \u007b600220800 \u5e73\u6210 1988\u007d"
+}
diff --git a/library/msgs/kl.msg b/library/msgs/kl.msg
new file mode 100755
index 0000000..d877bfe
--- /dev/null
+++ b/library/msgs/kl.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset kl DAYS_OF_WEEK_ABBREV [list \
+        "sab"\
+        "ata"\
+        "mar"\
+        "pin"\
+        "sis"\
+        "tal"\
+        "arf"]
+    ::msgcat::mcset kl DAYS_OF_WEEK_FULL [list \
+        "sabaat"\
+        "ataasinngorneq"\
+        "marlunngorneq"\
+        "pingasunngorneq"\
+        "sisamanngorneq"\
+        "tallimanngorneq"\
+        "arfininngorneq"]
+    ::msgcat::mcset kl MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "maj"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset kl MONTHS_FULL [list \
+        "januari"\
+        "februari"\
+        "martsi"\
+        "aprili"\
+        "maji"\
+        "juni"\
+        "juli"\
+        "augustusi"\
+        "septemberi"\
+        "oktoberi"\
+        "novemberi"\
+        "decemberi"\
+        ""]
+}
diff --git a/library/msgs/kl_gl.msg b/library/msgs/kl_gl.msg
new file mode 100755
index 0000000..403aa10
--- /dev/null
+++ b/library/msgs/kl_gl.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset kl_GL DATE_FORMAT "%d %b %Y"
+    ::msgcat::mcset kl_GL TIME_FORMAT "%T"
+    ::msgcat::mcset kl_GL TIME_FORMAT_12 "%T"
+    ::msgcat::mcset kl_GL DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/ko.msg b/library/msgs/ko.msg
new file mode 100755
index 0000000..0cd17a1
--- /dev/null
+++ b/library/msgs/ko.msg
@@ -0,0 +1,55 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ko DAYS_OF_WEEK_ABBREV [list \
+        "\uc77c"\
+        "\uc6d4"\
+        "\ud654"\
+        "\uc218"\
+        "\ubaa9"\
+        "\uae08"\
+        "\ud1a0"]
+    ::msgcat::mcset ko DAYS_OF_WEEK_FULL [list \
+        "\uc77c\uc694\uc77c"\
+        "\uc6d4\uc694\uc77c"\
+        "\ud654\uc694\uc77c"\
+        "\uc218\uc694\uc77c"\
+        "\ubaa9\uc694\uc77c"\
+        "\uae08\uc694\uc77c"\
+        "\ud1a0\uc694\uc77c"]
+    ::msgcat::mcset ko MONTHS_ABBREV [list \
+        "1\uc6d4"\
+        "2\uc6d4"\
+        "3\uc6d4"\
+        "4\uc6d4"\
+        "5\uc6d4"\
+        "6\uc6d4"\
+        "7\uc6d4"\
+        "8\uc6d4"\
+        "9\uc6d4"\
+        "10\uc6d4"\
+        "11\uc6d4"\
+        "12\uc6d4"\
+        ""]
+    ::msgcat::mcset ko MONTHS_FULL [list \
+        "1\uc6d4"\
+        "2\uc6d4"\
+        "3\uc6d4"\
+        "4\uc6d4"\
+        "5\uc6d4"\
+        "6\uc6d4"\
+        "7\uc6d4"\
+        "8\uc6d4"\
+        "9\uc6d4"\
+        "10\uc6d4"\
+        "11\uc6d4"\
+        "12\uc6d4"\
+        ""]
+    ::msgcat::mcset ko AM "\uc624\uc804"
+    ::msgcat::mcset ko PM "\uc624\ud6c4"
+    ::msgcat::mcset ko DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset ko TIME_FORMAT_12 "%P %l:%M:%S"
+    ::msgcat::mcset ko DATE_TIME_FORMAT "%Y-%m-%d %P %l:%M:%S %z"
+    ::msgcat::mcset ko LOCALE_DATE_FORMAT "%Y\ub144%B%Od\uc77c"
+    ::msgcat::mcset ko LOCALE_TIME_FORMAT "%H\uc2dc%M\ubd84%S\ucd08"
+    ::msgcat::mcset ko LOCALE_DATE_TIME_FORMAT "%A %Y\ub144%B%Od\uc77c%H\uc2dc%M\ubd84%S\ucd08 %z"
+}
diff --git a/library/msgs/ko_kr.msg b/library/msgs/ko_kr.msg
new file mode 100755
index 0000000..ea5bbd7
--- /dev/null
+++ b/library/msgs/ko_kr.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ko_KR BCE "\uae30\uc6d0\uc804"
+    ::msgcat::mcset ko_KR CE "\uc11c\uae30"
+    ::msgcat::mcset ko_KR DATE_FORMAT "%Y.%m.%d"
+    ::msgcat::mcset ko_KR TIME_FORMAT_12 "%P %l:%M:%S"
+    ::msgcat::mcset ko_KR DATE_TIME_FORMAT "%Y.%m.%d %P %l:%M:%S %z"
+}
diff --git a/library/msgs/kok.msg b/library/msgs/kok.msg
new file mode 100755
index 0000000..0869f20
--- /dev/null
+++ b/library/msgs/kok.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset kok DAYS_OF_WEEK_FULL [list \
+        "\u0906\u0926\u093f\u0924\u094d\u092f\u0935\u093e\u0930"\
+        "\u0938\u094b\u092e\u0935\u093e\u0930"\
+        "\u092e\u0902\u0917\u0933\u093e\u0930"\
+        "\u092c\u0941\u0927\u0935\u093e\u0930"\
+        "\u0917\u0941\u0930\u0941\u0935\u093e\u0930"\
+        "\u0936\u0941\u0915\u094d\u0930\u0935\u093e\u0930"\
+        "\u0936\u0928\u093f\u0935\u093e\u0930"]
+    ::msgcat::mcset kok MONTHS_ABBREV [list \
+        "\u091c\u093e\u0928\u0947\u0935\u093e\u0930\u0940"\
+        "\u092b\u0947\u092c\u0943\u0935\u093e\u0930\u0940"\
+        "\u092e\u093e\u0930\u094d\u091a"\
+        "\u090f\u092a\u094d\u0930\u093f\u0932"\
+        "\u092e\u0947"\
+        "\u091c\u0942\u0928"\
+        "\u091c\u0941\u0932\u0948"\
+        "\u0913\u0917\u0938\u094d\u091f"\
+        "\u0938\u0947\u092a\u094d\u091f\u0947\u0902\u092c\u0930"\
+        "\u0913\u0915\u094d\u091f\u094b\u092c\u0930"\
+        "\u0928\u094b\u0935\u094d\u0939\u0947\u0902\u092c\u0930"\
+        "\u0921\u093f\u0938\u0947\u0902\u092c\u0930"]
+    ::msgcat::mcset kok MONTHS_FULL [list \
+        "\u091c\u093e\u0928\u0947\u0935\u093e\u0930\u0940"\
+        "\u092b\u0947\u092c\u094d\u0930\u0941\u0935\u093e\u0930\u0940"\
+        "\u092e\u093e\u0930\u094d\u091a"\
+        "\u090f\u092a\u094d\u0930\u093f\u0932"\
+        "\u092e\u0947"\
+        "\u091c\u0942\u0928"\
+        "\u091c\u0941\u0932\u0948"\
+        "\u0913\u0917\u0938\u094d\u091f"\
+        "\u0938\u0947\u092a\u094d\u091f\u0947\u0902\u092c\u0930"\
+        "\u0913\u0915\u094d\u091f\u094b\u092c\u0930"\
+        "\u0928\u094b\u0935\u094d\u0939\u0947\u0902\u092c\u0930"\
+        "\u0921\u093f\u0938\u0947\u0902\u092c\u0930"]
+    ::msgcat::mcset kok AM "\u0915\u094d\u0930\u093f\u0938\u094d\u0924\u092a\u0942\u0930\u094d\u0935"
+    ::msgcat::mcset kok PM "\u0915\u094d\u0930\u093f\u0938\u094d\u0924\u0936\u0916\u093e"
+}
diff --git a/library/msgs/kok_in.msg b/library/msgs/kok_in.msg
new file mode 100755
index 0000000..abcb1ff
--- /dev/null
+++ b/library/msgs/kok_in.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset kok_IN DATE_FORMAT "%d %M %Y"
+    ::msgcat::mcset kok_IN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset kok_IN DATE_TIME_FORMAT "%d %M %Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/kw.msg b/library/msgs/kw.msg
new file mode 100755
index 0000000..aaf79b3
--- /dev/null
+++ b/library/msgs/kw.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset kw DAYS_OF_WEEK_ABBREV [list \
+        "Sul"\
+        "Lun"\
+        "Mth"\
+        "Mhr"\
+        "Yow"\
+        "Gwe"\
+        "Sad"]
+    ::msgcat::mcset kw DAYS_OF_WEEK_FULL [list \
+        "De Sul"\
+        "De Lun"\
+        "De Merth"\
+        "De Merher"\
+        "De Yow"\
+        "De Gwener"\
+        "De Sadorn"]
+    ::msgcat::mcset kw MONTHS_ABBREV [list \
+        "Gen"\
+        "Whe"\
+        "Mer"\
+        "Ebr"\
+        "Me"\
+        "Evn"\
+        "Gor"\
+        "Est"\
+        "Gwn"\
+        "Hed"\
+        "Du"\
+        "Kev"\
+        ""]
+    ::msgcat::mcset kw MONTHS_FULL [list \
+        "Mys Genver"\
+        "Mys Whevrel"\
+        "Mys Merth"\
+        "Mys Ebrel"\
+        "Mys Me"\
+        "Mys Evan"\
+        "Mys Gortheren"\
+        "Mye Est"\
+        "Mys Gwyngala"\
+        "Mys Hedra"\
+        "Mys Du"\
+        "Mys Kevardhu"\
+        ""]
+}
diff --git a/library/msgs/kw_gb.msg b/library/msgs/kw_gb.msg
new file mode 100755
index 0000000..2967680
--- /dev/null
+++ b/library/msgs/kw_gb.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset kw_GB DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset kw_GB TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset kw_GB DATE_TIME_FORMAT "%d %B %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/lt.msg b/library/msgs/lt.msg
new file mode 100755
index 0000000..27b0985
--- /dev/null
+++ b/library/msgs/lt.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset lt DAYS_OF_WEEK_ABBREV [list \
+        "Sk"\
+        "Pr"\
+        "An"\
+        "Tr"\
+        "Kt"\
+        "Pn"\
+        "\u0160t"]
+    ::msgcat::mcset lt DAYS_OF_WEEK_FULL [list \
+        "Sekmadienis"\
+        "Pirmadienis"\
+        "Antradienis"\
+        "Tre\u010diadienis"\
+        "Ketvirtadienis"\
+        "Penktadienis"\
+        "\u0160e\u0161tadienis"]
+    ::msgcat::mcset lt MONTHS_ABBREV [list \
+        "Sau"\
+        "Vas"\
+        "Kov"\
+        "Bal"\
+        "Geg"\
+        "Bir"\
+        "Lie"\
+        "Rgp"\
+        "Rgs"\
+        "Spa"\
+        "Lap"\
+        "Grd"\
+        ""]
+    ::msgcat::mcset lt MONTHS_FULL [list \
+        "Sausio"\
+        "Vasario"\
+        "Kovo"\
+        "Baland\u017eio"\
+        "Gegu\u017e\u0117s"\
+        "Bir\u017eelio"\
+        "Liepos"\
+        "Rugpj\u016b\u010dio"\
+        "Rugs\u0117jo"\
+        "Spalio"\
+        "Lapkri\u010dio"\
+        "Gruod\u017eio"\
+        ""]
+    ::msgcat::mcset lt BCE "pr.Kr."
+    ::msgcat::mcset lt CE "po.Kr."
+    ::msgcat::mcset lt DATE_FORMAT "%Y.%m.%e"
+    ::msgcat::mcset lt TIME_FORMAT "%H.%M.%S"
+    ::msgcat::mcset lt DATE_TIME_FORMAT "%Y.%m.%e %H.%M.%S %z"
+}
diff --git a/library/msgs/lv.msg b/library/msgs/lv.msg
new file mode 100755
index 0000000..a037b15
--- /dev/null
+++ b/library/msgs/lv.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset lv DAYS_OF_WEEK_ABBREV [list \
+        "Sv"\
+        "P"\
+        "O"\
+        "T"\
+        "C"\
+        "Pk"\
+        "S"]
+    ::msgcat::mcset lv DAYS_OF_WEEK_FULL [list \
+        "sv\u0113tdiena"\
+        "pirmdiena"\
+        "otrdiena"\
+        "tre\u0161diena"\
+        "ceturdien"\
+        "piektdiena"\
+        "sestdiena"]
+    ::msgcat::mcset lv MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "Mar"\
+        "Apr"\
+        "Maijs"\
+        "J\u016bn"\
+        "J\u016bl"\
+        "Aug"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Dec"\
+        ""]
+    ::msgcat::mcset lv MONTHS_FULL [list \
+        "janv\u0101ris"\
+        "febru\u0101ris"\
+        "marts"\
+        "apr\u012blis"\
+        "maijs"\
+        "j\u016bnijs"\
+        "j\u016blijs"\
+        "augusts"\
+        "septembris"\
+        "oktobris"\
+        "novembris"\
+        "decembris"\
+        ""]
+    ::msgcat::mcset lv BCE "pm\u0113"
+    ::msgcat::mcset lv CE "m\u0113"
+    ::msgcat::mcset lv DATE_FORMAT "%Y.%e.%m"
+    ::msgcat::mcset lv TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset lv DATE_TIME_FORMAT "%Y.%e.%m %H:%M:%S %z"
+}
diff --git a/library/msgs/mk.msg b/library/msgs/mk.msg
new file mode 100755
index 0000000..41cf60d
--- /dev/null
+++ b/library/msgs/mk.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset mk DAYS_OF_WEEK_ABBREV [list \
+        "\u043d\u0435\u0434."\
+        "\u043f\u043e\u043d."\
+        "\u0432\u0442."\
+        "\u0441\u0440\u0435."\
+        "\u0447\u0435\u0442."\
+        "\u043f\u0435\u0442."\
+        "\u0441\u0430\u0431."]
+    ::msgcat::mcset mk DAYS_OF_WEEK_FULL [list \
+        "\u043d\u0435\u0434\u0435\u043b\u0430"\
+        "\u043f\u043e\u043d\u0435\u0434\u0435\u043b\u043d\u0438\u043a"\
+        "\u0432\u0442\u043e\u0440\u043d\u0438\u043a"\
+        "\u0441\u0440\u0435\u0434\u0430"\
+        "\u0447\u0435\u0442\u0432\u0440\u0442\u043e\u043a"\
+        "\u043f\u0435\u0442\u043e\u043a"\
+        "\u0441\u0430\u0431\u043e\u0442\u0430"]
+    ::msgcat::mcset mk MONTHS_ABBREV [list \
+        "\u0458\u0430\u043d."\
+        "\u0444\u0435\u0432."\
+        "\u043c\u0430\u0440."\
+        "\u0430\u043f\u0440."\
+        "\u043c\u0430\u0458."\
+        "\u0458\u0443\u043d."\
+        "\u0458\u0443\u043b."\
+        "\u0430\u0432\u0433."\
+        "\u0441\u0435\u043f\u0442."\
+        "\u043e\u043a\u0442."\
+        "\u043d\u043e\u0435\u043c."\
+        "\u0434\u0435\u043a\u0435\u043c."\
+        ""]
+    ::msgcat::mcset mk MONTHS_FULL [list \
+        "\u0458\u0430\u043d\u0443\u0430\u0440\u0438"\
+        "\u0444\u0435\u0432\u0440\u0443\u0430\u0440\u0438"\
+        "\u043c\u0430\u0440\u0442"\
+        "\u0430\u043f\u0440\u0438\u043b"\
+        "\u043c\u0430\u0458"\
+        "\u0458\u0443\u043d\u0438"\
+        "\u0458\u0443\u043b\u0438"\
+        "\u0430\u0432\u0433\u0443\u0441\u0442"\
+        "\u0441\u0435\u043f\u0442\u0435\u043c\u0432\u0440\u0438"\
+        "\u043e\u043a\u0442\u043e\u043c\u0432\u0440\u0438"\
+        "\u043d\u043e\u0435\u043c\u0432\u0440\u0438"\
+        "\u0434\u0435\u043a\u0435\u043c\u0432\u0440\u0438"\
+        ""]
+    ::msgcat::mcset mk BCE "\u043f\u0440.\u043d.\u0435."
+    ::msgcat::mcset mk CE "\u0430\u0435."
+    ::msgcat::mcset mk DATE_FORMAT "%e.%m.%Y"
+    ::msgcat::mcset mk TIME_FORMAT "%H:%M:%S %z"
+    ::msgcat::mcset mk DATE_TIME_FORMAT "%e.%m.%Y %H:%M:%S %z %z"
+}
diff --git a/library/msgs/mr.msg b/library/msgs/mr.msg
new file mode 100755
index 0000000..cea427a
--- /dev/null
+++ b/library/msgs/mr.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset mr DAYS_OF_WEEK_FULL [list \
+        "\u0930\u0935\u093f\u0935\u093e\u0930"\
+        "\u0938\u094b\u092e\u0935\u093e\u0930"\
+        "\u092e\u0902\u0917\u0933\u0935\u093e\u0930"\
+        "\u092e\u0902\u0917\u0933\u0935\u093e\u0930"\
+        "\u0917\u0941\u0930\u0941\u0935\u093e\u0930"\
+        "\u0936\u0941\u0915\u094d\u0930\u0935\u093e\u0930"\
+        "\u0936\u0928\u093f\u0935\u093e\u0930"]
+    ::msgcat::mcset mr MONTHS_ABBREV [list \
+        "\u091c\u093e\u0928\u0947\u0935\u093e\u0930\u0940"\
+        "\u092b\u0947\u092c\u0943\u0935\u093e\u0930\u0940"\
+        "\u092e\u093e\u0930\u094d\u091a"\
+        "\u090f\u092a\u094d\u0930\u093f\u0932"\
+        "\u092e\u0947"\
+        "\u091c\u0942\u0928"\
+        "\u091c\u0941\u0932\u0948"\
+        "\u0913\u0917\u0938\u094d\u091f"\
+        "\u0938\u0947\u092a\u094d\u091f\u0947\u0902\u092c\u0930"\
+        "\u0913\u0915\u094d\u091f\u094b\u092c\u0930"\
+        "\u0928\u094b\u0935\u094d\u0939\u0947\u0902\u092c\u0930"\
+        "\u0921\u093f\u0938\u0947\u0902\u092c\u0930"]
+    ::msgcat::mcset mr MONTHS_FULL [list \
+        "\u091c\u093e\u0928\u0947\u0935\u093e\u0930\u0940"\
+        "\u092b\u0947\u092c\u0943\u0935\u093e\u0930\u0940"\
+        "\u092e\u093e\u0930\u094d\u091a"\
+        "\u090f\u092a\u094d\u0930\u093f\u0932"\
+        "\u092e\u0947"\
+        "\u091c\u0942\u0928"\
+        "\u091c\u0941\u0932\u0948"\
+        "\u0913\u0917\u0938\u094d\u091f"\
+        "\u0938\u0947\u092a\u094d\u091f\u0947\u0902\u092c\u0930"\
+        "\u0913\u0915\u094d\u091f\u094b\u092c\u0930"\
+        "\u0928\u094b\u0935\u094d\u0939\u0947\u0902\u092c\u0930"\
+        "\u0921\u093f\u0938\u0947\u0902\u092c\u0930"]
+    ::msgcat::mcset mr AM "BC"
+    ::msgcat::mcset mr PM "AD"
+}
diff --git a/library/msgs/mr_in.msg b/library/msgs/mr_in.msg
new file mode 100755
index 0000000..1889da5
--- /dev/null
+++ b/library/msgs/mr_in.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset mr_IN DATE_FORMAT "%d %M %Y"
+    ::msgcat::mcset mr_IN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset mr_IN DATE_TIME_FORMAT "%d %M %Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/ms.msg b/library/msgs/ms.msg
new file mode 100755
index 0000000..e954431
--- /dev/null
+++ b/library/msgs/ms.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ms DAYS_OF_WEEK_ABBREV [list \
+        "Aha"\
+        "Isn"\
+        "Sei"\
+        "Rab"\
+        "Kha"\
+        "Jum"\
+        "Sab"]
+    ::msgcat::mcset ms DAYS_OF_WEEK_FULL [list \
+        "Ahad"\
+        "Isnin"\
+        "Selasa"\
+        "Rahu"\
+        "Khamis"\
+        "Jumaat"\
+        "Sabtu"]
+    ::msgcat::mcset ms MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "Mac"\
+        "Apr"\
+        "Mei"\
+        "Jun"\
+        "Jul"\
+        "Ogos"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Dis"\
+        ""]
+    ::msgcat::mcset ms MONTHS_FULL [list \
+        "Januari"\
+        "Februari"\
+        "Mac"\
+        "April"\
+        "Mei"\
+        "Jun"\
+        "Julai"\
+        "Ogos"\
+        "September"\
+        "Oktober"\
+        "November"\
+        "Disember"\
+        ""]
+}
diff --git a/library/msgs/ms_my.msg b/library/msgs/ms_my.msg
new file mode 100755
index 0000000..c1f93d4
--- /dev/null
+++ b/library/msgs/ms_my.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ms_MY DATE_FORMAT "%A %d %b %Y"
+    ::msgcat::mcset ms_MY TIME_FORMAT_12 "%I:%M:%S  %z"
+    ::msgcat::mcset ms_MY DATE_TIME_FORMAT "%A %d %b %Y %I:%M:%S  %z %z"
+}
diff --git a/library/msgs/mt.msg b/library/msgs/mt.msg
new file mode 100755
index 0000000..ddd5446
--- /dev/null
+++ b/library/msgs/mt.msg
@@ -0,0 +1,27 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset mt DAYS_OF_WEEK_ABBREV [list \
+        "\u0126ad"\
+        "Tne"\
+        "Tli"\
+        "Erb"\
+        "\u0126am"\
+        "\u0120im"]
+    ::msgcat::mcset mt MONTHS_ABBREV [list \
+        "Jan"\
+        "Fra"\
+        "Mar"\
+        "Apr"\
+        "Mej"\
+        "\u0120un"\
+        "Lul"\
+        "Awi"\
+        "Set"\
+        "Ott"\
+        "Nov"]
+    ::msgcat::mcset mt BCE "QK"
+    ::msgcat::mcset mt CE ""
+    ::msgcat::mcset mt DATE_FORMAT "%A, %e ta %B, %Y"
+    ::msgcat::mcset mt TIME_FORMAT_12 "%l:%M:%S %P"
+    ::msgcat::mcset mt DATE_TIME_FORMAT "%A, %e ta %B, %Y %l:%M:%S %P %z"
+}
diff --git a/library/msgs/nb.msg b/library/msgs/nb.msg
new file mode 100755
index 0000000..90d49a3
--- /dev/null
+++ b/library/msgs/nb.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset nb DAYS_OF_WEEK_ABBREV [list \
+        "s\u00f8"\
+        "ma"\
+        "ti"\
+        "on"\
+        "to"\
+        "fr"\
+        "l\u00f8"]
+    ::msgcat::mcset nb DAYS_OF_WEEK_FULL [list \
+        "s\u00f8ndag"\
+        "mandag"\
+        "tirsdag"\
+        "onsdag"\
+        "torsdag"\
+        "fredag"\
+        "l\u00f8rdag"]
+    ::msgcat::mcset nb MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "mai"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "des"\
+        ""]
+    ::msgcat::mcset nb MONTHS_FULL [list \
+        "januar"\
+        "februar"\
+        "mars"\
+        "april"\
+        "mai"\
+        "juni"\
+        "juli"\
+        "august"\
+        "september"\
+        "oktober"\
+        "november"\
+        "desember"\
+        ""]
+    ::msgcat::mcset nb BCE "f.Kr."
+    ::msgcat::mcset nb CE "e.Kr."
+    ::msgcat::mcset nb DATE_FORMAT "%e. %B %Y"
+    ::msgcat::mcset nb TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset nb DATE_TIME_FORMAT "%e. %B %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/nl.msg b/library/msgs/nl.msg
new file mode 100755
index 0000000..4c5c675
--- /dev/null
+++ b/library/msgs/nl.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset nl DAYS_OF_WEEK_ABBREV [list \
+        "zo"\
+        "ma"\
+        "di"\
+        "wo"\
+        "do"\
+        "vr"\
+        "za"]
+    ::msgcat::mcset nl DAYS_OF_WEEK_FULL [list \
+        "zondag"\
+        "maandag"\
+        "dinsdag"\
+        "woensdag"\
+        "donderdag"\
+        "vrijdag"\
+        "zaterdag"]
+    ::msgcat::mcset nl MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mrt"\
+        "apr"\
+        "mei"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset nl MONTHS_FULL [list \
+        "januari"\
+        "februari"\
+        "maart"\
+        "april"\
+        "mei"\
+        "juni"\
+        "juli"\
+        "augustus"\
+        "september"\
+        "oktober"\
+        "november"\
+        "december"\
+        ""]
+    ::msgcat::mcset nl DATE_FORMAT "%e %B %Y"
+    ::msgcat::mcset nl TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset nl DATE_TIME_FORMAT "%e %B %Y %k:%M:%S %z"
+}
diff --git a/library/msgs/nl_be.msg b/library/msgs/nl_be.msg
new file mode 100755
index 0000000..4b19670
--- /dev/null
+++ b/library/msgs/nl_be.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset nl_BE DATE_FORMAT "%d-%m-%y"
+    ::msgcat::mcset nl_BE TIME_FORMAT "%T"
+    ::msgcat::mcset nl_BE TIME_FORMAT_12 "%T"
+    ::msgcat::mcset nl_BE DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/nn.msg b/library/msgs/nn.msg
new file mode 100755
index 0000000..bd61ac9
--- /dev/null
+++ b/library/msgs/nn.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset nn DAYS_OF_WEEK_ABBREV [list \
+        "su"\
+        "m\u00e5"\
+        "ty"\
+        "on"\
+        "to"\
+        "fr"\
+        "lau"]
+    ::msgcat::mcset nn DAYS_OF_WEEK_FULL [list \
+        "sundag"\
+        "m\u00e5ndag"\
+        "tysdag"\
+        "onsdag"\
+        "torsdag"\
+        "fredag"\
+        "laurdag"]
+    ::msgcat::mcset nn MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "mai"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "des"\
+        ""]
+    ::msgcat::mcset nn MONTHS_FULL [list \
+        "januar"\
+        "februar"\
+        "mars"\
+        "april"\
+        "mai"\
+        "juni"\
+        "juli"\
+        "august"\
+        "september"\
+        "oktober"\
+        "november"\
+        "desember"\
+        ""]
+    ::msgcat::mcset nn BCE "f.Kr."
+    ::msgcat::mcset nn CE "e.Kr."
+    ::msgcat::mcset nn DATE_FORMAT "%e. %B %Y"
+    ::msgcat::mcset nn TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset nn DATE_TIME_FORMAT "%e. %B %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/pl.msg b/library/msgs/pl.msg
new file mode 100755
index 0000000..d206f4b
--- /dev/null
+++ b/library/msgs/pl.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset pl DAYS_OF_WEEK_ABBREV [list \
+        "N"\
+        "Pn"\
+        "Wt"\
+        "\u015ar"\
+        "Cz"\
+        "Pt"\
+        "So"]
+    ::msgcat::mcset pl DAYS_OF_WEEK_FULL [list \
+        "niedziela"\
+        "poniedzia\u0142ek"\
+        "wtorek"\
+        "\u015broda"\
+        "czwartek"\
+        "pi\u0105tek"\
+        "sobota"]
+    ::msgcat::mcset pl MONTHS_ABBREV [list \
+        "sty"\
+        "lut"\
+        "mar"\
+        "kwi"\
+        "maj"\
+        "cze"\
+        "lip"\
+        "sie"\
+        "wrz"\
+        "pa\u017a"\
+        "lis"\
+        "gru"\
+        ""]
+    ::msgcat::mcset pl MONTHS_FULL [list \
+        "stycze\u0144"\
+        "luty"\
+        "marzec"\
+        "kwiecie\u0144"\
+        "maj"\
+        "czerwiec"\
+        "lipiec"\
+        "sierpie\u0144"\
+        "wrzesie\u0144"\
+        "pa\u017adziernik"\
+        "listopad"\
+        "grudzie\u0144"\
+        ""]
+    ::msgcat::mcset pl BCE "p.n.e."
+    ::msgcat::mcset pl CE "n.e."
+    ::msgcat::mcset pl DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset pl TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset pl DATE_TIME_FORMAT "%Y-%m-%d %H:%M:%S %z"
+}
diff --git a/library/msgs/pt.msg b/library/msgs/pt.msg
new file mode 100755
index 0000000..96fdb35
--- /dev/null
+++ b/library/msgs/pt.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset pt DAYS_OF_WEEK_ABBREV [list \
+        "Dom"\
+        "Seg"\
+        "Ter"\
+        "Qua"\
+        "Qui"\
+        "Sex"\
+        "S\u00e1b"]
+    ::msgcat::mcset pt DAYS_OF_WEEK_FULL [list \
+        "Domingo"\
+        "Segunda-feira"\
+        "Ter\u00e7a-feira"\
+        "Quarta-feira"\
+        "Quinta-feira"\
+        "Sexta-feira"\
+        "S\u00e1bado"]
+    ::msgcat::mcset pt MONTHS_ABBREV [list \
+        "Jan"\
+        "Fev"\
+        "Mar"\
+        "Abr"\
+        "Mai"\
+        "Jun"\
+        "Jul"\
+        "Ago"\
+        "Set"\
+        "Out"\
+        "Nov"\
+        "Dez"\
+        ""]
+    ::msgcat::mcset pt MONTHS_FULL [list \
+        "Janeiro"\
+        "Fevereiro"\
+        "Mar\u00e7o"\
+        "Abril"\
+        "Maio"\
+        "Junho"\
+        "Julho"\
+        "Agosto"\
+        "Setembro"\
+        "Outubro"\
+        "Novembro"\
+        "Dezembro"\
+        ""]
+    ::msgcat::mcset pt DATE_FORMAT "%d-%m-%Y"
+    ::msgcat::mcset pt TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset pt DATE_TIME_FORMAT "%d-%m-%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/pt_br.msg b/library/msgs/pt_br.msg
new file mode 100755
index 0000000..8684327
--- /dev/null
+++ b/library/msgs/pt_br.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset pt_BR DATE_FORMAT "%d-%m-%Y"
+    ::msgcat::mcset pt_BR TIME_FORMAT "%T"
+    ::msgcat::mcset pt_BR TIME_FORMAT_12 "%T"
+    ::msgcat::mcset pt_BR DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}
diff --git a/library/msgs/ro.msg b/library/msgs/ro.msg
new file mode 100755
index 0000000..bdd7c61
--- /dev/null
+++ b/library/msgs/ro.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ro DAYS_OF_WEEK_ABBREV [list \
+        "D"\
+        "L"\
+        "Ma"\
+        "Mi"\
+        "J"\
+        "V"\
+        "S"]
+    ::msgcat::mcset ro DAYS_OF_WEEK_FULL [list \
+        "duminic\u0103"\
+        "luni"\
+        "mar\u0163i"\
+        "miercuri"\
+        "joi"\
+        "vineri"\
+        "s\u00eemb\u0103t\u0103"]
+    ::msgcat::mcset ro MONTHS_ABBREV [list \
+        "Ian"\
+        "Feb"\
+        "Mar"\
+        "Apr"\
+        "Mai"\
+        "Iun"\
+        "Iul"\
+        "Aug"\
+        "Sep"\
+        "Oct"\
+        "Nov"\
+        "Dec"\
+        ""]
+    ::msgcat::mcset ro MONTHS_FULL [list \
+        "ianuarie"\
+        "februarie"\
+        "martie"\
+        "aprilie"\
+        "mai"\
+        "iunie"\
+        "iulie"\
+        "august"\
+        "septembrie"\
+        "octombrie"\
+        "noiembrie"\
+        "decembrie"\
+        ""]
+    ::msgcat::mcset ro BCE "d.C."
+    ::msgcat::mcset ro CE "\u00ee.d.C."
+    ::msgcat::mcset ro DATE_FORMAT "%d.%m.%Y"
+    ::msgcat::mcset ro TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset ro DATE_TIME_FORMAT "%d.%m.%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/ru.msg b/library/msgs/ru.msg
new file mode 100755
index 0000000..65b075d
--- /dev/null
+++ b/library/msgs/ru.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ru DAYS_OF_WEEK_ABBREV [list \
+        "\u0412\u0441"\
+        "\u041f\u043d"\
+        "\u0412\u0442"\
+        "\u0421\u0440"\
+        "\u0427\u0442"\
+        "\u041f\u0442"\
+        "\u0421\u0431"]
+    ::msgcat::mcset ru DAYS_OF_WEEK_FULL [list \
+        "\u0432\u043e\u0441\u043a\u0440\u0435\u0441\u0435\u043d\u044c\u0435"\
+        "\u043f\u043e\u043d\u0435\u0434\u0435\u043b\u044c\u043d\u0438\u043a"\
+        "\u0432\u0442\u043e\u0440\u043d\u0438\u043a"\
+        "\u0441\u0440\u0435\u0434\u0430"\
+        "\u0447\u0435\u0442\u0432\u0435\u0440\u0433"\
+        "\u043f\u044f\u0442\u043d\u0438\u0446\u0430"\
+        "\u0441\u0443\u0431\u0431\u043e\u0442\u0430"]
+    ::msgcat::mcset ru MONTHS_ABBREV [list \
+        "\u044f\u043d\u0432"\
+        "\u0444\u0435\u0432"\
+        "\u043c\u0430\u0440"\
+        "\u0430\u043f\u0440"\
+        "\u043c\u0430\u0439"\
+        "\u0438\u044e\u043d"\
+        "\u0438\u044e\u043b"\
+        "\u0430\u0432\u0433"\
+        "\u0441\u0435\u043d"\
+        "\u043e\u043a\u0442"\
+        "\u043d\u043e\u044f"\
+        "\u0434\u0435\u043a"\
+        ""]
+    ::msgcat::mcset ru MONTHS_FULL [list \
+        "\u042f\u043d\u0432\u0430\u0440\u044c"\
+        "\u0424\u0435\u0432\u0440\u0430\u043b\u044c"\
+        "\u041c\u0430\u0440\u0442"\
+        "\u0410\u043f\u0440\u0435\u043b\u044c"\
+        "\u041c\u0430\u0439"\
+        "\u0418\u044e\u043d\u044c"\
+        "\u0418\u044e\u043b\u044c"\
+        "\u0410\u0432\u0433\u0443\u0441\u0442"\
+        "\u0421\u0435\u043d\u0442\u044f\u0431\u0440\u044c"\
+        "\u041e\u043a\u0442\u044f\u0431\u0440\u044c"\
+        "\u041d\u043e\u044f\u0431\u0440\u044c"\
+        "\u0414\u0435\u043a\u0430\u0431\u0440\u044c"\
+        ""]
+    ::msgcat::mcset ru BCE "\u0434\u043e \u043d.\u044d."
+    ::msgcat::mcset ru CE "\u043d.\u044d."
+    ::msgcat::mcset ru DATE_FORMAT "%d.%m.%Y"
+    ::msgcat::mcset ru TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset ru DATE_TIME_FORMAT "%d.%m.%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/ru_ua.msg b/library/msgs/ru_ua.msg
new file mode 100755
index 0000000..6e1f8a8
--- /dev/null
+++ b/library/msgs/ru_ua.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ru_UA DATE_FORMAT "%d.%m.%Y"
+    ::msgcat::mcset ru_UA TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset ru_UA DATE_TIME_FORMAT "%d.%m.%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/sh.msg b/library/msgs/sh.msg
new file mode 100755
index 0000000..6ee0fc7
--- /dev/null
+++ b/library/msgs/sh.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sh DAYS_OF_WEEK_ABBREV [list \
+        "Ned"\
+        "Pon"\
+        "Uto"\
+        "Sre"\
+        "\u010cet"\
+        "Pet"\
+        "Sub"]
+    ::msgcat::mcset sh DAYS_OF_WEEK_FULL [list \
+        "Nedelja"\
+        "Ponedeljak"\
+        "Utorak"\
+        "Sreda"\
+        "\u010cetvrtak"\
+        "Petak"\
+        "Subota"]
+    ::msgcat::mcset sh MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "Mar"\
+        "Apr"\
+        "Maj"\
+        "Jun"\
+        "Jul"\
+        "Avg"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Dec"\
+        ""]
+    ::msgcat::mcset sh MONTHS_FULL [list \
+        "Januar"\
+        "Februar"\
+        "Mart"\
+        "April"\
+        "Maj"\
+        "Juni"\
+        "Juli"\
+        "Avgust"\
+        "Septembar"\
+        "Oktobar"\
+        "Novembar"\
+        "Decembar"\
+        ""]
+    ::msgcat::mcset sh BCE "p. n. e."
+    ::msgcat::mcset sh CE "n. e."
+    ::msgcat::mcset sh DATE_FORMAT "%d.%m.%Y."
+    ::msgcat::mcset sh TIME_FORMAT "%k.%M.%S"
+    ::msgcat::mcset sh DATE_TIME_FORMAT "%d.%m.%Y. %k.%M.%S %z"
+}
diff --git a/library/msgs/sk.msg b/library/msgs/sk.msg
new file mode 100755
index 0000000..9b2f0aa
--- /dev/null
+++ b/library/msgs/sk.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sk DAYS_OF_WEEK_ABBREV [list \
+        "Ne"\
+        "Po"\
+        "Ut"\
+        "St"\
+        "\u0160t"\
+        "Pa"\
+        "So"]
+    ::msgcat::mcset sk DAYS_OF_WEEK_FULL [list \
+        "Nede\u013ee"\
+        "Pondelok"\
+        "Utorok"\
+        "Streda"\
+        "\u0160tvrtok"\
+        "Piatok"\
+        "Sobota"]
+    ::msgcat::mcset sk MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "m\u00e1j"\
+        "j\u00fan"\
+        "j\u00fal"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset sk MONTHS_FULL [list \
+        "janu\u00e1r"\
+        "febru\u00e1r"\
+        "marec"\
+        "apr\u00edl"\
+        "m\u00e1j"\
+        "j\u00fan"\
+        "j\u00fal"\
+        "august"\
+        "september"\
+        "okt\u00f3ber"\
+        "november"\
+        "december"\
+        ""]
+    ::msgcat::mcset sk BCE "pred n.l."
+    ::msgcat::mcset sk CE "n.l."
+    ::msgcat::mcset sk DATE_FORMAT "%e.%m.%Y"
+    ::msgcat::mcset sk TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset sk DATE_TIME_FORMAT "%e.%m.%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/sl.msg b/library/msgs/sl.msg
new file mode 100755
index 0000000..42bc509
--- /dev/null
+++ b/library/msgs/sl.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sl DAYS_OF_WEEK_ABBREV [list \
+        "Ned"\
+        "Pon"\
+        "Tor"\
+        "Sre"\
+        "\u010cet"\
+        "Pet"\
+        "Sob"]
+    ::msgcat::mcset sl DAYS_OF_WEEK_FULL [list \
+        "Nedelja"\
+        "Ponedeljek"\
+        "Torek"\
+        "Sreda"\
+        "\u010cetrtek"\
+        "Petek"\
+        "Sobota"]
+    ::msgcat::mcset sl MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "maj"\
+        "jun"\
+        "jul"\
+        "avg"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset sl MONTHS_FULL [list \
+        "januar"\
+        "februar"\
+        "marec"\
+        "april"\
+        "maj"\
+        "junij"\
+        "julij"\
+        "avgust"\
+        "september"\
+        "oktober"\
+        "november"\
+        "december"\
+        ""]
+    ::msgcat::mcset sl BCE "pr.n.\u0161."
+    ::msgcat::mcset sl CE "po Kr."
+    ::msgcat::mcset sl DATE_FORMAT "%Y.%m.%e"
+    ::msgcat::mcset sl TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset sl DATE_TIME_FORMAT "%Y.%m.%e %k:%M:%S %z"
+}
diff --git a/library/msgs/sq.msg b/library/msgs/sq.msg
new file mode 100755
index 0000000..8fb1fce
--- /dev/null
+++ b/library/msgs/sq.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sq DAYS_OF_WEEK_ABBREV [list \
+        "Die"\
+        "H\u00ebn"\
+        "Mar"\
+        "M\u00ebr"\
+        "Enj"\
+        "Pre"\
+        "Sht"]
+    ::msgcat::mcset sq DAYS_OF_WEEK_FULL [list \
+        "e diel"\
+        "e h\u00ebn\u00eb"\
+        "e mart\u00eb"\
+        "e m\u00ebrkur\u00eb"\
+        "e enjte"\
+        "e premte"\
+        "e shtun\u00eb"]
+    ::msgcat::mcset sq MONTHS_ABBREV [list \
+        "Jan"\
+        "Shk"\
+        "Mar"\
+        "Pri"\
+        "Maj"\
+        "Qer"\
+        "Kor"\
+        "Gsh"\
+        "Sht"\
+        "Tet"\
+        "N\u00ebn"\
+        "Dhj"\
+        ""]
+    ::msgcat::mcset sq MONTHS_FULL [list \
+        "janar"\
+        "shkurt"\
+        "mars"\
+        "prill"\
+        "maj"\
+        "qershor"\
+        "korrik"\
+        "gusht"\
+        "shtator"\
+        "tetor"\
+        "n\u00ebntor"\
+        "dhjetor"\
+        ""]
+    ::msgcat::mcset sq BCE "p.e.r."
+    ::msgcat::mcset sq CE "n.e.r."
+    ::msgcat::mcset sq AM "PD"
+    ::msgcat::mcset sq PM "MD"
+    ::msgcat::mcset sq DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset sq TIME_FORMAT_12 "%l:%M:%S.%P"
+    ::msgcat::mcset sq DATE_TIME_FORMAT "%Y-%m-%d %l:%M:%S.%P %z"
+}
diff --git a/library/msgs/sr.msg b/library/msgs/sr.msg
new file mode 100755
index 0000000..7576668
--- /dev/null
+++ b/library/msgs/sr.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sr DAYS_OF_WEEK_ABBREV [list \
+        "\u041d\u0435\u0434"\
+        "\u041f\u043e\u043d"\
+        "\u0423\u0442\u043e"\
+        "\u0421\u0440\u0435"\
+        "\u0427\u0435\u0442"\
+        "\u041f\u0435\u0442"\
+        "\u0421\u0443\u0431"]
+    ::msgcat::mcset sr DAYS_OF_WEEK_FULL [list \
+        "\u041d\u0435\u0434\u0435\u0459\u0430"\
+        "\u041f\u043e\u043d\u0435\u0434\u0435\u0459\u0430\u043a"\
+        "\u0423\u0442\u043e\u0440\u0430\u043a"\
+        "\u0421\u0440\u0435\u0434\u0430"\
+        "\u0427\u0435\u0442\u0432\u0440\u0442\u0430\u043a"\
+        "\u041f\u0435\u0442\u0430\u043a"\
+        "\u0421\u0443\u0431\u043e\u0442\u0430"]
+    ::msgcat::mcset sr MONTHS_ABBREV [list \
+        "\u0408\u0430\u043d"\
+        "\u0424\u0435\u0431"\
+        "\u041c\u0430\u0440"\
+        "\u0410\u043f\u0440"\
+        "\u041c\u0430\u0458"\
+        "\u0408\u0443\u043d"\
+        "\u0408\u0443\u043b"\
+        "\u0410\u0432\u0433"\
+        "\u0421\u0435\u043f"\
+        "\u041e\u043a\u0442"\
+        "\u041d\u043e\u0432"\
+        "\u0414\u0435\u0446"\
+        ""]
+    ::msgcat::mcset sr MONTHS_FULL [list \
+        "\u0408\u0430\u043d\u0443\u0430\u0440"\
+        "\u0424\u0435\u0431\u0440\u0443\u0430\u0440"\
+        "\u041c\u0430\u0440\u0442"\
+        "\u0410\u043f\u0440\u0438\u043b"\
+        "\u041c\u0430\u0458"\
+        "\u0408\u0443\u043d\u0438"\
+        "\u0408\u0443\u043b\u0438"\
+        "\u0410\u0432\u0433\u0443\u0441\u0442"\
+        "\u0421\u0435\u043f\u0442\u0435\u043c\u0431\u0430\u0440"\
+        "\u041e\u043a\u0442\u043e\u0431\u0430\u0440"\
+        "\u041d\u043e\u0432\u0435\u043c\u0431\u0430\u0440"\
+        "\u0414\u0435\u0446\u0435\u043c\u0431\u0430\u0440"\
+        ""]
+    ::msgcat::mcset sr BCE "\u043f. \u043d. \u0435."
+    ::msgcat::mcset sr CE "\u043d. \u0435"
+    ::msgcat::mcset sr DATE_FORMAT "%Y.%m.%e"
+    ::msgcat::mcset sr TIME_FORMAT "%k.%M.%S"
+    ::msgcat::mcset sr DATE_TIME_FORMAT "%Y.%m.%e %k.%M.%S %z"
+}
diff --git a/library/msgs/sv.msg b/library/msgs/sv.msg
new file mode 100755
index 0000000..f7a67c6
--- /dev/null
+++ b/library/msgs/sv.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sv DAYS_OF_WEEK_ABBREV [list \
+        "s\u00f6"\
+        "m\u00e5"\
+        "ti"\
+        "on"\
+        "to"\
+        "fr"\
+        "l\u00f6"]
+    ::msgcat::mcset sv DAYS_OF_WEEK_FULL [list \
+        "s\u00f6ndag"\
+        "m\u00e5ndag"\
+        "tisdag"\
+        "onsdag"\
+        "torsdag"\
+        "fredag"\
+        "l\u00f6rdag"]
+    ::msgcat::mcset sv MONTHS_ABBREV [list \
+        "jan"\
+        "feb"\
+        "mar"\
+        "apr"\
+        "maj"\
+        "jun"\
+        "jul"\
+        "aug"\
+        "sep"\
+        "okt"\
+        "nov"\
+        "dec"\
+        ""]
+    ::msgcat::mcset sv MONTHS_FULL [list \
+        "januari"\
+        "februari"\
+        "mars"\
+        "april"\
+        "maj"\
+        "juni"\
+        "juli"\
+        "augusti"\
+        "september"\
+        "oktober"\
+        "november"\
+        "december"\
+        ""]
+    ::msgcat::mcset sv BCE "f.Kr."
+    ::msgcat::mcset sv CE "e.Kr."
+    ::msgcat::mcset sv DATE_FORMAT "%Y-%m-%d"
+    ::msgcat::mcset sv TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset sv DATE_TIME_FORMAT "%Y-%m-%d %H:%M:%S %z"
+}
diff --git a/library/msgs/sw.msg b/library/msgs/sw.msg
new file mode 100755
index 0000000..b888b43
--- /dev/null
+++ b/library/msgs/sw.msg
@@ -0,0 +1,49 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset sw DAYS_OF_WEEK_ABBREV [list \
+        "Jpi"\
+        "Jtt"\
+        "Jnn"\
+        "Jtn"\
+        "Alh"\
+        "Iju"\
+        "Jmo"]
+    ::msgcat::mcset sw DAYS_OF_WEEK_FULL [list \
+        "Jumapili"\
+        "Jumatatu"\
+        "Jumanne"\
+        "Jumatano"\
+        "Alhamisi"\
+        "Ijumaa"\
+        "Jumamosi"]
+    ::msgcat::mcset sw MONTHS_ABBREV [list \
+        "Jan"\
+        "Feb"\
+        "Mar"\
+        "Apr"\
+        "Mei"\
+        "Jun"\
+        "Jul"\
+        "Ago"\
+        "Sep"\
+        "Okt"\
+        "Nov"\
+        "Des"\
+        ""]
+    ::msgcat::mcset sw MONTHS_FULL [list \
+        "Januari"\
+        "Februari"\
+        "Machi"\
+        "Aprili"\
+        "Mei"\
+        "Juni"\
+        "Julai"\
+        "Agosti"\
+        "Septemba"\
+        "Oktoba"\
+        "Novemba"\
+        "Desemba"\
+        ""]
+    ::msgcat::mcset sw BCE "KK"
+    ::msgcat::mcset sw CE "BK"
+}
diff --git a/library/msgs/ta.msg b/library/msgs/ta.msg
new file mode 100755
index 0000000..4abb90c
--- /dev/null
+++ b/library/msgs/ta.msg
@@ -0,0 +1,39 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ta DAYS_OF_WEEK_FULL [list \
+        "\u0b9e\u0bbe\u0baf\u0bbf\u0bb1\u0bc1"\
+        "\u0ba4\u0bbf\u0b99\u0bcd\u0b95\u0bb3\u0bcd"\
+        "\u0b9a\u0bc6\u0bb5\u0bcd\u0bb5\u0bbe\u0baf\u0bcd"\
+        "\u0baa\u0bc1\u0ba4\u0ba9\u0bcd"\
+        "\u0bb5\u0bbf\u0baf\u0bbe\u0bb4\u0ba9\u0bcd"\
+        "\u0bb5\u0bc6\u0bb3\u0bcd\u0bb3\u0bbf"\
+        "\u0b9a\u0ba9\u0bbf"]
+    ::msgcat::mcset ta MONTHS_ABBREV [list \
+        "\u0b9c\u0ba9\u0bb5\u0bb0\u0bbf"\
+        "\u0baa\u0bc6\u0baa\u0bcd\u0bb0\u0bb5\u0bb0\u0bbf"\
+        "\u0bae\u0bbe\u0bb0\u0bcd\u0b9a\u0bcd"\
+        "\u0b8f\u0baa\u0bcd\u0bb0\u0bb2\u0bcd"\
+        "\u0bae\u0bc7"\
+        "\u0b9c\u0bc2\u0ba9\u0bcd"\
+        "\u0b9c\u0bc2\u0bb2\u0bc8"\
+        "\u0b86\u0b95\u0bb8\u0bcd\u0b9f\u0bcd"\
+        "\u0b9a\u0bc6\u0baa\u0bcd\u0b9f\u0bae\u0bcd\u0baa\u0bb0\u0bcd"\
+        "\u0b85\u0b95\u0bcd\u0b9f\u0bcb\u0baa\u0bb0\u0bcd"\
+        "\u0ba8\u0bb5\u0bae\u0bcd\u0baa\u0bb0\u0bcd"\
+        "\u0b9f\u0bbf\u0b9a\u0bae\u0bcd\u0baa\u0bb0\u0bcdr"]
+    ::msgcat::mcset ta MONTHS_FULL [list \
+        "\u0b9c\u0ba9\u0bb5\u0bb0\u0bbf"\
+        "\u0baa\u0bc6\u0baa\u0bcd\u0bb0\u0bb5\u0bb0\u0bbf"\
+        "\u0bae\u0bbe\u0bb0\u0bcd\u0b9a\u0bcd"\
+        "\u0b8f\u0baa\u0bcd\u0bb0\u0bb2\u0bcd"\
+        "\u0bae\u0bc7"\
+        "\u0b9c\u0bc2\u0ba9\u0bcd"\
+        "\u0b9c\u0bc2\u0bb2\u0bc8"\
+        "\u0b86\u0b95\u0bb8\u0bcd\u0b9f\u0bcd"\
+        "\u0b9a\u0bc6\u0baa\u0bcd\u0b9f\u0bae\u0bcd\u0baa\u0bb0\u0bcd"\
+        "\u0b85\u0b95\u0bcd\u0b9f\u0bcb\u0baa\u0bb0\u0bcd"\
+        "\u0ba8\u0bb5\u0bae\u0bcd\u0baa\u0bb0\u0bcd"\
+        "\u0b9f\u0bbf\u0b9a\u0bae\u0bcd\u0baa\u0bb0\u0bcdr"]
+    ::msgcat::mcset ta AM "\u0b95\u0bbf\u0bae\u0bc1"
+    ::msgcat::mcset ta PM "\u0b95\u0bbf\u0baa\u0bbf"
+}
diff --git a/library/msgs/ta_in.msg b/library/msgs/ta_in.msg
new file mode 100755
index 0000000..24590ac
--- /dev/null
+++ b/library/msgs/ta_in.msg
@@ -0,0 +1,6 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset ta_IN DATE_FORMAT "%d %M %Y"
+    ::msgcat::mcset ta_IN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset ta_IN DATE_TIME_FORMAT "%d %M %Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/te.msg b/library/msgs/te.msg
new file mode 100755
index 0000000..6111473
--- /dev/null
+++ b/library/msgs/te.msg
@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset te DAYS_OF_WEEK_ABBREV [list \
+        "\u0c06\u0c26\u0c3f"\
+        "\u0c38\u0c4b\u0c2e"\
+        "\u0c2e\u0c02\u0c17\u0c33"\
+        "\u0c2c\u0c41\u0c27"\
+        "\u0c17\u0c41\u0c30\u0c41"\
+        "\u0c36\u0c41\u0c15\u0c4d\u0c30"\
+        "\u0c36\u0c28\u0c3f"]
+    ::msgcat::mcset te DAYS_OF_WEEK_FULL [list \
+        "\u0c06\u0c26\u0c3f\u0c35\u0c3e\u0c30\u0c02"\
+        "\u0c38\u0c4b\u0c2e\u0c35\u0c3e\u0c30\u0c02"\
+        "\u0c2e\u0c02\u0c17\u0c33\u0c35\u0c3e\u0c30\u0c02"\
+        "\u0c2c\u0c41\u0c27\u0c35\u0c3e\u0c30\u0c02"\
+        "\u0c17\u0c41\u0c30\u0c41\u0c35\u0c3e\u0c30\u0c02"\
+        "\u0c36\u0c41\u0c15\u0c4d\u0c30\u0c35\u0c3e\u0c30\u0c02"\
+        "\u0c36\u0c28\u0c3f\u0c35\u0c3e\u0c30\u0c02"]
+    ::msgcat::mcset te MONTHS_ABBREV [list \
+        "\u0c1c\u0c28\u0c35\u0c30\u0c3f"\
+        "\u0c2b\u0c3f\u0c2c\u0c4d\u0c30\u0c35\u0c30\u0c3f"\
+        "\u0c2e\u0c3e\u0c30\u0c4d\u0c1a\u0c3f"\
+        "\u0c0f\u0c2a\u0c4d\u0c30\u0c3f\u0c32\u0c4d"\
+        "\u0c2e\u0c47"\
+        "\u0c1c\u0c42\u0c28\u0c4d"\
+        "\u0c1c\u0c42\u0c32\u0c48"\
+        "\u0c06\u0c17\u0c38\u0c4d\u0c1f\u0c41"\
+        "\u0c38\u0c46\u0c2a\u0c4d\u0c1f\u0c46\u0c02\u0c2c\u0c30\u0c4d"\
+        "\u0c05\u0c15\u0c4d\u0c1f\u0c4b\u0c2c\u0c30\u0c4d"\
+        "\u0c28\u0c35\u0c02\u0c2c\u0c30\u0c4d"\
+        "\u0c21\u0c3f\u0c38\u0c46\u0c02\u0c2c\u0c30\u0c4d"\
+        ""]
+    ::msgcat::mcset te MONTHS_FULL [list \
+        "\u0c1c\u0c28\u0c35\u0c30\u0c3f"\
+        "\u0c2b\u0c3f\u0c2c\u0c4d\u0c30\u0c35\u0c30\u0c3f"\
+        "\u0c2e\u0c3e\u0c30\u0c4d\u0c1a\u0c3f"\
+        "\u0c0f\u0c2a\u0c4d\u0c30\u0c3f\u0c32\u0c4d"\
+        "\u0c2e\u0c47"\
+        "\u0c1c\u0c42\u0c28\u0c4d"\
+        "\u0c1c\u0c42\u0c32\u0c48"\
+        "\u0c06\u0c17\u0c38\u0c4d\u0c1f\u0c41"\
+        "\u0c38\u0c46\u0c2a\u0c4d\u0c1f\u0c46\u0c02\u0c2c\u0c30\u0c4d"\
+        "\u0c05\u0c15\u0c4d\u0c1f\u0c4b\u0c2c\u0c30\u0c4d"\
+        "\u0c28\u0c35\u0c02\u0c2c\u0c30\u0c4d"\
+        "\u0c21\u0c3f\u0c38\u0c46\u0c02\u0c2c\u0c30\u0c4d"\
+        ""]
+}
diff --git a/library/msgs/te_in.msg b/library/msgs/te_in.msg
new file mode 100755
index 0000000..61638b5
--- /dev/null
+++ b/library/msgs/te_in.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset te_IN AM "\u0c2a\u0c42\u0c30\u0c4d\u0c35\u0c3e\u0c39\u0c4d\u0c28"
+    ::msgcat::mcset te_IN PM "\u0c05\u0c2a\u0c30\u0c3e\u0c39\u0c4d\u0c28"
+    ::msgcat::mcset te_IN DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset te_IN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset te_IN DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}
diff --git a/library/msgs/th.msg b/library/msgs/th.msg
new file mode 100755
index 0000000..7486c35
--- /dev/null
+++ b/library/msgs/th.msg
@@ -0,0 +1,54 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset th DAYS_OF_WEEK_ABBREV [list \
+        "\u0e2d\u0e32."\
+        "\u0e08."\
+        "\u0e2d."\
+        "\u0e1e."\
+        "\u0e1e\u0e24."\
+        "\u0e28."\
+        "\u0e2a."]
+    ::msgcat::mcset th DAYS_OF_WEEK_FULL [list \
+        "\u0e27\u0e31\u0e19\u0e2d\u0e32\u0e17\u0e34\u0e15\u0e22\u0e4c"\
+        "\u0e27\u0e31\u0e19\u0e08\u0e31\u0e19\u0e17\u0e23\u0e4c"\
+        "\u0e27\u0e31\u0e19\u0e2d\u0e31\u0e07\u0e04\u0e32\u0e23"\
+        "\u0e27\u0e31\u0e19\u0e1e\u0e38\u0e18"\
+        "\u0e27\u0e31\u0e19\u0e1e\u0e24\u0e2b\u0e31\u0e2a\u0e1a\u0e14\u0e35"\
+        "\u0e27\u0e31\u0e19\u0e28\u0e38\u0e01\u0e23\u0e4c"\
+        "\u0e27\u0e31\u0e19\u0e40\u0e2a\u0e32\u0e23\u0e4c"]
+    ::msgcat::mcset th MONTHS_ABBREV [list \
+        "\u0e21.\u0e04."\
+        "\u0e01.\u0e1e."\
+        "\u0e21\u0e35.\u0e04."\
+        "\u0e40\u0e21.\u0e22."\
+        "\u0e1e.\u0e04."\
+        "\u0e21\u0e34.\u0e22."\
+        "\u0e01.\u0e04."\
+        "\u0e2a.\u0e04."\
+        "\u0e01.\u0e22."\
+        "\u0e15.\u0e04."\
+        "\u0e1e.\u0e22."\
+        "\u0e18.\u0e04."\
+        ""]
+    ::msgcat::mcset th MONTHS_FULL [list \
+        "\u0e21\u0e01\u0e23\u0e32\u0e04\u0e21"\
+        "\u0e01\u0e38\u0e21\u0e20\u0e32\u0e1e\u0e31\u0e19\u0e18\u0e4c"\
+        "\u0e21\u0e35\u0e19\u0e32\u0e04\u0e21"\
+        "\u0e40\u0e21\u0e29\u0e32\u0e22\u0e19"\
+        "\u0e1e\u0e24\u0e29\u0e20\u0e32\u0e04\u0e21"\
+        "\u0e21\u0e34\u0e16\u0e38\u0e19\u0e32\u0e22\u0e19"\
+        "\u0e01\u0e23\u0e01\u0e0e\u0e32\u0e04\u0e21"\
+        "\u0e2a\u0e34\u0e07\u0e2b\u0e32\u0e04\u0e21"\
+        "\u0e01\u0e31\u0e19\u0e22\u0e32\u0e22\u0e19"\
+        "\u0e15\u0e38\u0e25\u0e32\u0e04\u0e21"\
+        "\u0e1e\u0e24\u0e28\u0e08\u0e34\u0e01\u0e32\u0e22\u0e19"\
+        "\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21"\
+        ""]
+    ::msgcat::mcset th BCE "\u0e25\u0e17\u0e35\u0e48"
+    ::msgcat::mcset th CE "\u0e04.\u0e28."
+    ::msgcat::mcset th AM "\u0e01\u0e48\u0e2d\u0e19\u0e40\u0e17\u0e35\u0e48\u0e22\u0e07"
+    ::msgcat::mcset th PM "\u0e2b\u0e25\u0e31\u0e07\u0e40\u0e17\u0e35\u0e48\u0e22\u0e07"
+    ::msgcat::mcset th DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset th TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset th DATE_TIME_FORMAT "%e/%m/%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/tr.msg b/library/msgs/tr.msg
new file mode 100755
index 0000000..7b2ecf9
--- /dev/null
+++ b/library/msgs/tr.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset tr DAYS_OF_WEEK_ABBREV [list \
+        "Paz"\
+        "Pzt"\
+        "Sal"\
+        "\u00c7ar"\
+        "Per"\
+        "Cum"\
+        "Cmt"]
+    ::msgcat::mcset tr DAYS_OF_WEEK_FULL [list \
+        "Pazar"\
+        "Pazartesi"\
+        "Sal\u0131"\
+        "\u00c7ar\u015famba"\
+        "Per\u015fembe"\
+        "Cuma"\
+        "Cumartesi"]
+    ::msgcat::mcset tr MONTHS_ABBREV [list \
+        "Oca"\
+        "\u015eub"\
+        "Mar"\
+        "Nis"\
+        "May"\
+        "Haz"\
+        "Tem"\
+        "A\u011fu"\
+        "Eyl"\
+        "Eki"\
+        "Kas"\
+        "Ara"\
+        ""]
+    ::msgcat::mcset tr MONTHS_FULL [list \
+        "Ocak"\
+        "\u015eubat"\
+        "Mart"\
+        "Nisan"\
+        "May\u0131s"\
+        "Haziran"\
+        "Temmuz"\
+        "A\u011fustos"\
+        "Eyl\u00fcl"\
+        "Ekim"\
+        "Kas\u0131m"\
+        "Aral\u0131k"\
+        ""]
+    ::msgcat::mcset tr DATE_FORMAT "%d.%m.%Y"
+    ::msgcat::mcset tr TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset tr DATE_TIME_FORMAT "%d.%m.%Y %H:%M:%S %z"
+}
diff --git a/library/msgs/uk.msg b/library/msgs/uk.msg
new file mode 100755
index 0000000..7d4c64a
--- /dev/null
+++ b/library/msgs/uk.msg
@@ -0,0 +1,52 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset uk DAYS_OF_WEEK_ABBREV [list \
+        "\u043d\u0434"\
+        "\u043f\u043d"\
+        "\u0432\u0442"\
+        "\u0441\u0440"\
+        "\u0447\u0442"\
+        "\u043f\u0442"\
+        "\u0441\u0431"]
+    ::msgcat::mcset uk DAYS_OF_WEEK_FULL [list \
+        "\u043d\u0435\u0434\u0456\u043b\u044f"\
+        "\u043f\u043e\u043d\u0435\u0434\u0456\u043b\u043e\u043a"\
+        "\u0432\u0456\u0432\u0442\u043e\u0440\u043e\u043a"\
+        "\u0441\u0435\u0440\u0435\u0434\u0430"\
+        "\u0447\u0435\u0442\u0432\u0435\u0440"\
+        "\u043f'\u044f\u0442\u043d\u0438\u0446\u044f"\
+        "\u0441\u0443\u0431\u043e\u0442\u0430"]
+    ::msgcat::mcset uk MONTHS_ABBREV [list \
+        "\u0441\u0456\u0447"\
+        "\u043b\u044e\u0442"\
+        "\u0431\u0435\u0440"\
+        "\u043a\u0432\u0456\u0442"\
+        "\u0442\u0440\u0430\u0432"\
+        "\u0447\u0435\u0440\u0432"\
+        "\u043b\u0438\u043f"\
+        "\u0441\u0435\u0440\u043f"\
+        "\u0432\u0435\u0440"\
+        "\u0436\u043e\u0432\u0442"\
+        "\u043b\u0438\u0441\u0442"\
+        "\u0433\u0440\u0443\u0434"\
+        ""]
+    ::msgcat::mcset uk MONTHS_FULL [list \
+        "\u0441\u0456\u0447\u043d\u044f"\
+        "\u043b\u044e\u0442\u043e\u0433\u043e"\
+        "\u0431\u0435\u0440\u0435\u0437\u043d\u044f"\
+        "\u043a\u0432\u0456\u0442\u043d\u044f"\
+        "\u0442\u0440\u0430\u0432\u043d\u044f"\
+        "\u0447\u0435\u0440\u0432\u043d\u044f"\
+        "\u043b\u0438\u043f\u043d\u044f"\
+        "\u0441\u0435\u0440\u043f\u043d\u044f"\
+        "\u0432\u0435\u0440\u0435\u0441\u043d\u044f"\
+        "\u0436\u043e\u0432\u0442\u043d\u044f"\
+        "\u043b\u0438\u0441\u0442\u043e\u043f\u0430\u0434\u0430"\
+        "\u0433\u0440\u0443\u0434\u043d\u044f"\
+        ""]
+    ::msgcat::mcset uk BCE "\u0434\u043e \u043d.\u0435."
+    ::msgcat::mcset uk CE "\u043f\u0456\u0441\u043b\u044f \u043d.\u0435."
+    ::msgcat::mcset uk DATE_FORMAT "%e/%m/%Y"
+    ::msgcat::mcset uk TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset uk DATE_TIME_FORMAT "%e/%m/%Y %k:%M:%S %z"
+}
diff --git a/library/msgs/vi.msg b/library/msgs/vi.msg
new file mode 100755
index 0000000..c98b2a6
--- /dev/null
+++ b/library/msgs/vi.msg
@@ -0,0 +1,50 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset vi DAYS_OF_WEEK_ABBREV [list \
+        "Th 2"\
+        "Th 3"\
+        "Th 4"\
+        "Th 5"\
+        "Th 6"\
+        "Th 7"\
+        "CN"]
+    ::msgcat::mcset vi DAYS_OF_WEEK_FULL [list \
+        "Th\u01b0\u0301 hai"\
+        "Th\u01b0\u0301 ba"\
+        "Th\u01b0\u0301 t\u01b0"\
+        "Th\u01b0\u0301 n\u0103m"\
+        "Th\u01b0\u0301 s\u00e1u"\
+        "Th\u01b0\u0301 ba\u0309y"\
+        "Chu\u0309 nh\u00e2\u0323t"]
+    ::msgcat::mcset vi MONTHS_ABBREV [list \
+        "Thg 1"\
+        "Thg 2"\
+        "Thg 3"\
+        "Thg 4"\
+        "Thg 5"\
+        "Thg 6"\
+        "Thg 7"\
+        "Thg 8"\
+        "Thg 9"\
+        "Thg 10"\
+        "Thg 11"\
+        "Thg 12"\
+        ""]
+    ::msgcat::mcset vi MONTHS_FULL [list \
+        "Th\u00e1ng m\u00f4\u0323t"\
+        "Th\u00e1ng hai"\
+        "Th\u00e1ng ba"\
+        "Th\u00e1ng t\u01b0"\
+        "Th\u00e1ng n\u0103m"\
+        "Th\u00e1ng s\u00e1u"\
+        "Th\u00e1ng ba\u0309y"\
+        "Th\u00e1ng t\u00e1m"\
+        "Th\u00e1ng ch\u00edn"\
+        "Th\u00e1ng m\u01b0\u01a1\u0300i"\
+        "Th\u00e1ng m\u01b0\u01a1\u0300i m\u00f4\u0323t"\
+        "Th\u00e1ng m\u01b0\u01a1\u0300i hai"\
+        ""]
+    ::msgcat::mcset vi DATE_FORMAT "%d %b %Y"
+    ::msgcat::mcset vi TIME_FORMAT "%H:%M:%S"
+    ::msgcat::mcset vi DATE_TIME_FORMAT "%d %b %Y %H:%M:%S %z"
+}
diff --git a/library/msgs/zh.msg b/library/msgs/zh.msg
new file mode 100755
index 0000000..b799a32
--- /dev/null
+++ b/library/msgs/zh.msg
@@ -0,0 +1,55 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset zh DAYS_OF_WEEK_ABBREV [list \
+        "\u661f\u671f\u65e5"\
+        "\u661f\u671f\u4e00"\
+        "\u661f\u671f\u4e8c"\
+        "\u661f\u671f\u4e09"\
+        "\u661f\u671f\u56db"\
+        "\u661f\u671f\u4e94"\
+        "\u661f\u671f\u516d"]
+    ::msgcat::mcset zh DAYS_OF_WEEK_FULL [list \
+        "\u661f\u671f\u65e5"\
+        "\u661f\u671f\u4e00"\
+        "\u661f\u671f\u4e8c"\
+        "\u661f\u671f\u4e09"\
+        "\u661f\u671f\u56db"\
+        "\u661f\u671f\u4e94"\
+        "\u661f\u671f\u516d"]
+    ::msgcat::mcset zh MONTHS_ABBREV [list \
+        "\u4e00\u6708"\
+        "\u4e8c\u6708"\
+        "\u4e09\u6708"\
+        "\u56db\u6708"\
+        "\u4e94\u6708"\
+        "\u516d\u6708"\
+        "\u4e03\u6708"\
+        "\u516b\u6708"\
+        "\u4e5d\u6708"\
+        "\u5341\u6708"\
+        "\u5341\u4e00\u6708"\
+        "\u5341\u4e8c\u6708"\
+        ""]
+    ::msgcat::mcset zh MONTHS_FULL [list \
+        "\u4e00\u6708"\
+        "\u4e8c\u6708"\
+        "\u4e09\u6708"\
+        "\u56db\u6708"\
+        "\u4e94\u6708"\
+        "\u516d\u6708"\
+        "\u4e03\u6708"\
+        "\u516b\u6708"\
+        "\u4e5d\u6708"\
+        "\u5341\u6708"\
+        "\u5341\u4e00\u6708"\
+        "\u5341\u4e8c\u6708"\
+        ""]
+    ::msgcat::mcset zh BCE "\u516c\u5143\u524d"
+    ::msgcat::mcset zh CE "\u516c\u5143"
+    ::msgcat::mcset zh AM "\u4e0a\u5348"
+    ::msgcat::mcset zh PM "\u4e0b\u5348"
+    ::msgcat::mcset zh LOCALE_NUMERALS "\u3007 \u4e00 \u4e8c \u4e09 \u56db \u4e94 \u516d \u4e03 \u516b \u4e5d \u5341 \u5341\u4e00 \u5341\u4e8c \u5341\u4e09 \u5341\u56db \u5341\u4e94 \u5341\u516d \u5341\u4e03 \u5341\u516b \u5341\u4e5d \u4e8c\u5341 \u5eff\u4e00 \u5eff\u4e8c \u5eff\u4e09 \u5eff\u56db \u5eff\u4e94 \u5eff\u516d \u5eff\u4e03 \u5eff\u516b \u5eff\u4e5d \u4e09\u5341 \u5345\u4e00 \u5345\u4e8c \u5345\u4e09 \u5345\u56db \u5345\u4e94 \u5345\u516d \u5345\u4e03 \u5345\u516b \u5345\u4e5d \u56db\u5341 \u56db\u5341\u4e00 \u56db\u5341\u4e8c \u56db\u5341\u4e09 \u56db\u5341\u56db \u56db\u5341\u4e94 \u56db\u5341\u516d \u56db\u5341\u4e03 \u56db\u5341\u516b \u56db\u5341\u4e5d \u4e94\u5341 \u4e94\u5341\u4e00 \u4e94\u5341\u4e8c \u4e94\u5341\u4e09 \u4e94\u5341\u56db \u4e94\u5341\u4e94 \u4e94\u5341\u516d \u4e94\u5341\u4e03 \u4e94\u5341\u516b \u4e94\u5341\u4e5d \u516d\u5341 \u516d\u5341\u4e00 \u516d\u5341\u4e8c \u516d\u5341\u4e09 \u516d\u5341\u56db \u516d\u5341\u4e94 \u516d\u5341\u516d \u516d\u5341\u4e03 \u516d\u5341\u516b \u516d\u5341\u4e5d \u4e03\u5341 \u4e03\u5341\u4e00 \u4e03\u5341\u4e8c \u4e03\u5341\u4e09 \u4e03\u5341\u56db \u4e03\u5341\u4e94 \u4e03\u5341\u516d \u4e03\u5341\u4e03 \u4e03\u5341\u516b \u4e03\u5341\u4e5d \u516b\u5341 \u516b\u5341\u4e00 \u516b\u5341\u4e8c \u516b\u5341\u4e09 \u516b\u5341\u56db \u516b\u5341\u4e94 \u516b\u5341\u516d \u516b\u5341\u4e03 \u516b\u5341\u516b \u516b\u5341\u4e5d \u4e5d\u5341 \u4e5d\u5341\u4e00 \u4e5d\u5341\u4e8c \u4e5d\u5341\u4e09 \u4e5d\u5341\u56db \u4e5d\u5341\u4e94 \u4e5d\u5341\u516d \u4e5d\u5341\u4e03 \u4e5d\u5341\u516b \u4e5d\u5341\u4e5d"
+    ::msgcat::mcset zh LOCALE_DATE_FORMAT "\u516c\u5143%Y\u5e74%B%Od\u65e5"
+    ::msgcat::mcset zh LOCALE_TIME_FORMAT "%OH\u65f6%OM\u5206%OS\u79d2"
+    ::msgcat::mcset zh LOCALE_DATE_TIME_FORMAT "%A %Y\u5e74%B%Od\u65e5%OH\u65f6%OM\u5206%OS\u79d2 %z"
+}
diff --git a/library/msgs/zh_cn.msg b/library/msgs/zh_cn.msg
new file mode 100755
index 0000000..d62ce77
--- /dev/null
+++ b/library/msgs/zh_cn.msg
@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset zh_CN DATE_FORMAT "%Y-%m-%e"
+    ::msgcat::mcset zh_CN TIME_FORMAT "%k:%M:%S"
+    ::msgcat::mcset zh_CN TIME_FORMAT_12 "%P%I\u65f6%M\u5206%S\u79d2"
+    ::msgcat::mcset zh_CN DATE_TIME_FORMAT "%Y-%m-%e %k:%M:%S %z"
+}
diff --git a/library/msgs/zh_hk.msg b/library/msgs/zh_hk.msg
new file mode 100755
index 0000000..badb1dd
--- /dev/null
+++ b/library/msgs/zh_hk.msg
@@ -0,0 +1,28 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset zh_HK DAYS_OF_WEEK_ABBREV [list \
+        "\u65e5"\
+        "\u4e00"\
+        "\u4e8c"\
+        "\u4e09"\
+        "\u56db"\
+        "\u4e94"\
+        "\u516d"]
+    ::msgcat::mcset zh_HK MONTHS_ABBREV [list \
+        "1\u6708"\
+        "2\u6708"\
+        "3\u6708"\
+        "4\u6708"\
+        "5\u6708"\
+        "6\u6708"\
+        "7\u6708"\
+        "8\u6708"\
+        "9\u6708"\
+        "10\u6708"\
+        "11\u6708"\
+        "12\u6708"\
+        ""]
+    ::msgcat::mcset zh_HK DATE_FORMAT "%Y\u5e74%m\u6708%e\u65e5"
+    ::msgcat::mcset zh_HK TIME_FORMAT_12 "%P%I:%M:%S"
+    ::msgcat::mcset zh_HK DATE_TIME_FORMAT "%Y\u5e74%m\u6708%e\u65e5 %P%I:%M:%S %z"
+}
diff --git a/library/msgs/zh_sg.msg b/library/msgs/zh_sg.msg
new file mode 100755
index 0000000..a2f3e39
--- /dev/null
+++ b/library/msgs/zh_sg.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset zh_SG AM "\u4e0a\u5348"
+    ::msgcat::mcset zh_SG PM "\u4e2d\u5348"
+    ::msgcat::mcset zh_SG DATE_FORMAT "%d %B %Y"
+    ::msgcat::mcset zh_SG TIME_FORMAT_12 "%P %I:%M:%S"
+    ::msgcat::mcset zh_SG DATE_TIME_FORMAT "%d %B %Y %P %I:%M:%S %z"
+}
diff --git a/library/msgs/zh_tw.msg b/library/msgs/zh_tw.msg
new file mode 100755
index 0000000..e0796b1
--- /dev/null
+++ b/library/msgs/zh_tw.msg
@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset zh_TW BCE "\u6c11\u570b\u524d"
+    ::msgcat::mcset zh_TW CE "\u6c11\u570b"
+    ::msgcat::mcset zh_TW DATE_FORMAT "%Y/%m/%e"
+    ::msgcat::mcset zh_TW TIME_FORMAT_12 "%P %I:%M:%S"
+    ::msgcat::mcset zh_TW DATE_TIME_FORMAT "%Y/%m/%e %P %I:%M:%S %z"
+}
diff --git a/library/opt/optparse.tcl b/library/opt/optparse.tcl
index ec5eb30..c9438a0 100644
--- a/library/opt/optparse.tcl
+++ b/library/opt/optparse.tcl
@@ -11,7 +11,7 @@
 package require Tcl 8.2
 # When this version number changes, update the pkgIndex.tcl file
 # and the install directory in the Makefiles.
-package provide opt 0.4.4.1
+package provide opt 0.4.5
 
 namespace eval ::tcl {
 
@@ -809,15 +809,15 @@ proc ::tcl::OptCheckType {arg type {typeArgs ""}} {
         }
     }
 
-    # Auto magic lasy type determination
+    # Auto magic lazy type determination
     proc OptGuessType {arg} {
-        if {[regexp -nocase {^(true|false)$} $arg]} {
+ 	 if { $arg == "true" || $arg == "false" } {
             return boolean
         }
-        if {[regexp {^(-+)?[0-9]+$} $arg]} {
+        if {[string is integer -strict $arg]} {
             return int
         }
-        if {![catch {expr {double($arg)}}]} {
+        if {[string is double -strict $arg]} {
             return float
         }
         return string
diff --git a/library/opt/pkgIndex.tcl b/library/opt/pkgIndex.tcl
index 754d2ee..c5d3635 100644
--- a/library/opt/pkgIndex.tcl
+++ b/library/opt/pkgIndex.tcl
@@ -9,4 +9,4 @@
 # full path name of this file's directory.
 
 if {![package vsatisfies [package provide Tcl] 8.2]} {return}
-package ifneeded opt 0.4.4.1 [list source [file join $dir optparse.tcl]]
+package ifneeded opt 0.4.5 [list source [file join $dir optparse.tcl]]
diff --git a/library/package.tcl b/library/package.tcl
index c19640e..06f619c 100644
--- a/library/package.tcl
+++ b/library/package.tcl
@@ -10,11 +10,9 @@
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
 
-# Create the package namespace
-namespace eval ::pkg {
-}
+namespace eval tcl::Pkg {}
 
-# pkg_compareExtension --
+# ::tcl::Pkg::CompareExtension --
 #
 #  Used internally by pkg_mkIndex to compare the extension of a file to
 #  a given extension. On Windows, it uses a case-insensitive comparison
@@ -29,7 +27,7 @@ namespace eval ::pkg {
 # Results:
 #  Returns 1 if the extension matches, 0 otherwise
 
-proc pkg_compareExtension { fileName {ext {}} } {
+proc tcl::Pkg::CompareExtension { fileName {ext {}} } {
     global tcl_platform
     if {$ext eq ""} {set ext [info sharedlibextension]}
     if {$tcl_platform(platform) eq "windows"} {
@@ -47,7 +45,7 @@ proc pkg_compareExtension { fileName {ext {}} } {
 	    # The current extension does not match; if it is not a numeric
 	    # value, quit, as we are only looking to ignore version number
 	    # extensions.  Otherwise we might return 1 in this case:
-	    #		pkg_compareExtension foo.so.bar .so
+	    #		tcl::Pkg::CompareExtension foo.so.bar .so
 	    # which should not match.
 
 	    if { ![string is integer -strict [string range $currExt 1 end]] } {
@@ -84,7 +82,6 @@ proc pkg_compareExtension { fileName {ext {}} } {
 #			dir.
 
 proc pkg_mkIndex {args} {
-    global errorCode errorInfo
     set usage {"pkg_mkIndex ?-direct? ?-lazy? ?-load pattern? ?-verbose? ?--? dir ?pattern ...?"};
 
     set argCount [llength $args]
@@ -135,13 +132,10 @@ proc pkg_mkIndex {args} {
 	set patternList [list "*.tcl" "*[info sharedlibextension]"]
     }
 
-    set oldDir [pwd]
-    cd $dir
-
-    if {[catch {eval [linsert $patternList 0 glob --]} fileList]} {
-	global errorCode errorInfo
-	cd $oldDir
-	return -code error -errorcode $errorCode -errorinfo $errorInfo $fileList
+    if {[catch {
+	    glob -directory $dir -tails -types {r f} -- {*}$patternList
+    } fileList o]} {
+	return -options $o $fileList
     }
     foreach file $fileList {
 	# For each file, figure out what commands and packages it provides.
@@ -153,11 +147,6 @@ proc pkg_mkIndex {args} {
 	    continue
 	}
 
-	# Changed back to the original directory before initializing the
-	# slave in case TCL_LIBRARY is a relative path (e.g. in the test
-	# suite). 
-
-	cd $oldDir
 	set c [interp create]
 
 	# Load into the child any packages currently loaded in the parent
@@ -194,7 +183,6 @@ proc pkg_mkIndex {args} {
 		$c eval [list wm withdraw .]
 	    }
 	}
-	cd $dir
 
 	$c eval {
 	    # Stub out the package command so packages can
@@ -204,7 +192,7 @@ proc pkg_mkIndex {args} {
 	    proc package {what args} {
 		switch -- $what {
 		    require { return ; # ignore transitive requires }
-		    default { uplevel 1 [linsert $args 0 __package_orig $what] }
+		    default { __package_orig $what {*}$args }
 		}
 	    }
 	    proc tclPkgUnknown args {}
@@ -224,6 +212,7 @@ proc pkg_mkIndex {args} {
 	    # to generate a pkgIndex.tcl file for the ::tcl namespace.
 
 	    namespace eval ::tcl {
+		variable dir		;# Current directory being processed
 		variable file		;# Current file being processed
 		variable direct		;# -direct flag value
 		variable x		;# Loop variable
@@ -237,6 +226,7 @@ proc pkg_mkIndex {args} {
 	    }
 	}
 
+	$c eval [list set ::tcl::dir $dir]
 	$c eval [list set ::tcl::file $file]
 	$c eval [list set ::tcl::direct $direct]
 
@@ -244,7 +234,8 @@ proc pkg_mkIndex {args} {
 	# just deleted the unknown procedure.  This doesn't handle
 	# procedures with default arguments.
 
-	foreach p {pkg_compareExtension} {
+	foreach p {::tcl::Pkg::CompareExtension} {
+	    $c eval [list namespace eval [namespace qualifiers $p] {}]
 	    $c eval [list proc $p [info args $p] [info body $p]]
 	}
 
@@ -259,8 +250,7 @@ proc pkg_mkIndex {args} {
 		proc ::tcl::GetAllNamespaces {{root ::}} {
 		    set list $root
 		    foreach ns [namespace children $root] {
-			eval [linsert [::tcl::GetAllNamespaces $ns] 0 \
-				lappend list]
+			lappend list {*}[::tcl::GetAllNamespaces $ns]
 		    }
 		    return $list
 		}
@@ -283,7 +273,7 @@ proc pkg_mkIndex {args} {
 		# on some systems (like SunOS) the loader will abort the
 		# whole application when it gets an error.
 
-		if {[pkg_compareExtension $::tcl::file [info sharedlibextension]]} {
+		if {[::tcl::Pkg::CompareExtension $::tcl::file [info sharedlibextension]]} {
 		    # The "file join ." command below is necessary.
 		    # Without it, if the file name has no \'s and we're
 		    # on UNIX, the load command will invoke the
@@ -291,11 +281,11 @@ proc pkg_mkIndex {args} {
 		    # the wrong file to be used.
 
 		    set ::tcl::debug loading
-		    load [file join . $::tcl::file]
+		    load [file join $::tcl::dir $::tcl::file]
 		    set ::tcl::type load
 		} else {
 		    set ::tcl::debug sourcing
-		    source $::tcl::file
+		    source [file join $::tcl::dir $::tcl::file]
 		    set ::tcl::type source
 		}
 
@@ -399,11 +389,9 @@ proc pkg_mkIndex {args} {
 
     foreach pkg [lsort [array names files]] {
 	set cmd {}
-	foreach {name version} $pkg {
-	    break
-	}
-	lappend cmd ::pkg::create -name $name -version $version
-	foreach spec $files($pkg) {
+	lassign $pkg name version
+	lappend cmd ::tcl::Pkg::Create -name $name -version $version
+	foreach spec [lsort -index 0 $files($pkg)] {
 	    foreach {file type procs} $spec {
 		if { $direct } {
 		    set procs {}
@@ -414,10 +402,9 @@ proc pkg_mkIndex {args} {
 	append index "\n[eval $cmd]"
     }
 
-    set f [open pkgIndex.tcl w]
+    set f [open [file join $dir pkgIndex.tcl] w]
     puts $f $index
     close $f
-    cd $oldDir
 }
 
 # tclPkgSetup --
@@ -460,7 +447,7 @@ proc tclPkgSetup {dir pkg version files} {
 # It is invoked when a package that's needed can't be found.  It scans
 # the auto_path directories and their immediate children looking for
 # pkgIndex.tcl files and sources any such files that are found to setup
-# the package database.  As it searches, it will recognize changes
+# the package database. As it searches, it will recognize changes
 # to the auto_path and scan any new directories.
 #
 # Arguments:
@@ -468,12 +455,7 @@ proc tclPkgSetup {dir pkg version files} {
 # version -		Version of desired package.  Not used.
 # exact -		Either "-exact" or omitted.  Not used.
 
-
-proc tclPkgUnknown [expr {
-			  [info exists tcl_platform(tip,268)]
-			  ? "name args"
-			  : "name version {exact {}}"
-		      }] {
+proc tclPkgUnknown {name args} {
     global auto_path env
 
     if {![info exists auto_path]} {
@@ -500,10 +482,11 @@ proc tclPkgUnknown [expr {
 		    * pkgIndex.tcl] {
 		set dir [file dirname $file]
 		if {![info exists procdDirs($dir)]} {
-		    set code [catch {source $file} msg]
-		    if {$code == 1 && [lindex $::errorCode 0] eq "POSIX"
-			    && [lindex $::errorCode 1] eq "EACCES"} {
-			# $file was not readable;  silently ignore
+		    set code [catch {source $file} msg opt]
+		    if {$code == 1 &&
+			    [lindex [dict get $opt -errorcode] 0] eq "POSIX" &&
+			    [lindex [dict get $opt -errorcode] 1] eq "EACCES"} {
+			# $file was not readable; silently ignore
 			continue
 		    }
 		    if {$code} {
@@ -519,10 +502,11 @@ proc tclPkgUnknown [expr {
 	    set file [file join $dir pkgIndex.tcl]
 	    # safe interps usually don't have "file exists", 
 	    if {([interp issafe] || [file exists $file])} {
-		set code [catch {source $file} msg]
-		if {$code == 1 && [lindex $::errorCode 0] eq "POSIX"
-			&& [lindex $::errorCode 1] eq "EACCES"} {
-		    # $file was not readable;  silently ignore
+		set code [catch {source $file} msg opt]
+		if {$code == 1 &&
+			[lindex [dict get $opt -errorcode] 0] eq "POSIX" &&
+			[lindex [dict get $opt -errorcode] 1] eq "EACCES"} {
+		    # $file was not readable; silently ignore
 		    continue
 		}
 		if {$code}  {
@@ -558,8 +542,7 @@ proc tclPkgUnknown [expr {
 	# $use_path.  Don't add directories we've already seen, or ones
 	# already on the $use_path.
 	foreach dir [lrange $auto_path $index end] {
-	    if {![info exists tclSeenPath($dir)] 
-		    && ([lsearch -exact $use_path $dir] == -1) } {
+	    if {![info exists tclSeenPath($dir)] && ($dir ni $use_path)} {
 		lappend use_path $dir
 	    }
 	}
@@ -575,120 +558,15 @@ proc tclPkgUnknown [expr {
 # Arguments:
 # original -		original [package unknown] procedure
 # name -		Name of desired package.  Not used.
-#ifndef TCL_TIP268
 # version -		Version of desired package.  Not used.
 # exact -		Either "-exact" or omitted.  Not used.
-#else
-# args -		List of requirements. Not used.
-#endif
-
-if {[info exists tcl_platform(tip,268)]} {
-    proc tcl::MacOSXPkgUnknown {original name args} {
-	#  First do the cross-platform default search
-	uplevel 1 $original [linsert $args 0 $name]
-
-	# Now do MacOSX specific searching
-	global auto_path
-
-	if {![info exists auto_path]} {
-	    return
-	}
-	# Cache the auto_path, because it may change while we run through
-	# the first set of pkgIndex.tcl files
-	set old_path [set use_path $auto_path]
-	while {[llength $use_path]} {
-	    set dir [lindex $use_path end]
-	    # get the pkgIndex files out of the subdirectories
-	    foreach file [glob -directory $dir -join -nocomplain \
-			      * Resources Scripts pkgIndex.tcl] {
-		set dir [file dirname $file]
-		if {![info exists procdDirs($dir)]} {
-		    set code [catch {source $file} msg]
-		    if {$code == 1 && [lindex $::errorCode 0] eq "POSIX"
-			    && [lindex $::errorCode 1] eq "EACCES"} {
-			# $file was not readable;  silently ignore
-			continue
-		    }
-		    if {$code} {
-			tclLog "error reading package index file $file: $msg"
-		    } else {
-			set procdDirs($dir) 1
-		    }
-		}
-	    }
-	    set use_path [lrange $use_path 0 end-1]
-	    if {$old_path ne $auto_path} {
-		foreach dir $auto_path {
-		    lappend use_path $dir
-		}
-		set old_path $auto_path
-	    }
-	}
-    }
-} else {
-    proc tcl::MacOSXPkgUnknown {original name version {exact {}}} {
-
-	#  First do the cross-platform default search
-	uplevel 1 $original [list $name $version $exact]
 
-	# Now do MacOSX specific searching
-	global auto_path
-
-	if {![info exists auto_path]} {
-	    return
-	}
-	# Cache the auto_path, because it may change while we run through
-	# the first set of pkgIndex.tcl files
-	set old_path [set use_path $auto_path]
-	while {[llength $use_path]} {
-	    set dir [lindex $use_path end]
-	    # get the pkgIndex files out of the subdirectories
-	    foreach file [glob -directory $dir -join -nocomplain \
-			      * Resources Scripts pkgIndex.tcl] {
-		set dir [file dirname $file]
-		if {![info exists procdDirs($dir)]} {
-		    set code [catch {source $file} msg]
-		    if {$code == 1 && [lindex $::errorCode 0] eq "POSIX"
-			    && [lindex $::errorCode 1] eq "EACCES"} {
-			# $file was not readable;  silently ignore
-			continue
-		    }
-		    if {$code} {
-			tclLog "error reading package index file $file: $msg"
-		    } else {
-			set procdDirs($dir) 1
-		    }
-		}
-	    }
-	    set use_path [lrange $use_path 0 end-1]
-	    if {$old_path ne $auto_path} {
-		foreach dir $auto_path {
-		    lappend use_path $dir
-		}
-		set old_path $auto_path
-	    }
-	}
-    }
-}
-
-# tcl::MacPkgUnknown --
-# This procedure extends the "package unknown" function for Mac.
-# It searches for pkgIndex TEXT resources in all files
-# Only installed in interps that are not safe so we don't check
-# for [interp issafe] as in tclPkgUnknown.
-#
-# Arguments:
-# original -		original [package unknown] procedure
-# name -		Name of desired package.  Not used.
-# version -		Version of desired package.  Not used.
-# exact -		Either "-exact" or omitted.  Not used.
-
-proc tcl::MacPkgUnknown {original name version {exact {}}} {
+proc tcl::MacOSXPkgUnknown {original name args} {
 
     #  First do the cross-platform default search
-    uplevel 1 $original [list $name $version $exact]
+    uplevel 1 $original [linsert $args 0 $name]
 
-    # Now do Mac specific searching
+    # Now do MacOSX specific searching
     global auto_path
 
     if {![info exists auto_path]} {
@@ -698,40 +576,74 @@ proc tcl::MacPkgUnknown {original name version {exact {}}} {
     # the first set of pkgIndex.tcl files
     set old_path [set use_path $auto_path]
     while {[llength $use_path]} {
-	# We look for pkgIndex TEXT resources in the resource fork of shared libraries
 	set dir [lindex $use_path end]
-	foreach x [concat [list $dir] [glob -directory $dir -nocomplain *] ] {
-	    if {[file isdirectory $x] && ![info exists procdDirs($x)]} {
-		set dir $x
-		foreach x [glob -directory $dir -nocomplain *.shlb] {
-		    if {[file isfile $x]} {
-			set res [resource open $x]
-			foreach y [resource list TEXT $res] {
-			    if {$y eq "pkgIndex"} {source -rsrc pkgIndex}
-			}
-			catch {resource close $res}
-		    }
+
+	# Make sure we only scan each directory one time.
+	if {[info exists tclSeenPath($dir)]} {
+	    set use_path [lrange $use_path 0 end-1]
+	    continue
+	}
+	set tclSeenPath($dir) 1
+
+	# get the pkgIndex files out of the subdirectories
+	foreach file [glob -directory $dir -join -nocomplain \
+		* Resources Scripts pkgIndex.tcl] {
+	    set dir [file dirname $file]
+	    if {![info exists procdDirs($dir)]} {
+		set code [catch {source $file} msg opt]
+		if {$code == 1 &&
+			[lindex [dict get $opt -errorcode] 0] eq "POSIX" &&
+			[lindex [dict get $opt -errorcode] 1] eq "EACCES"} {
+		    # $file was not readable; silently ignore
+		    continue
+		}
+		if {$code} {
+		    tclLog "error reading package index file $file: $msg"
+		} else {
+		    set procdDirs($dir) 1
 		}
-		set procdDirs($dir) 1
 	    }
 	}
 	set use_path [lrange $use_path 0 end-1]
-	if {$old_path ne $auto_path} {
-	    foreach dir $auto_path {
+
+	# Check whether any of the index scripts we [source]d above
+	# set a new value for $::auto_path.  If so, then find any
+	# new directories on the $::auto_path, and lappend them to
+	# the $use_path we are working from.  This gives index scripts
+	# the (arguably unwise) power to expand the index script search
+	# path while the search is in progress.
+	set index 0
+	if {[llength $old_path] == [llength $auto_path]} {
+	    foreach dir $auto_path old $old_path {
+		if {$dir ne $old} {
+		    # This entry in $::auto_path has changed.
+		    break
+		}
+		incr index
+	    }
+	}
+
+	# $index now points to the first element of $auto_path that
+	# has changed, or the beginning if $auto_path has changed length
+	# Scan the new elements of $auto_path for directories to add to
+	# $use_path.  Don't add directories we've already seen, or ones
+	# already on the $use_path.
+	foreach dir [lrange $auto_path $index end] {
+	    if {![info exists tclSeenPath($dir)] && ($dir ni $use_path)} {
 		lappend use_path $dir
 	    }
-	    set old_path $auto_path
 	}
+	set old_path $auto_path
     }
 }
 
-# ::pkg::create --
+# ::tcl::Pkg::Create --
 #
 #	Given a package specification generate a "package ifneeded" statement
 #	for the package, suitable for inclusion in a pkgIndex.tcl file.
 #
 # Arguments:
-#	args		arguments used by the create function:
+#	args		arguments used by the Create function:
 #			-name		packageName
 #			-version	packageVersion
 #			-load		{filename ?{procs}?}
@@ -751,7 +663,7 @@ proc tcl::MacPkgUnknown {original name version {exact {}}} {
 # Results:
 #	An appropriate "package ifneeded" statement for the package.
 
-proc ::pkg::create {args} {
+proc ::tcl::Pkg::Create {args} {
     append err(usage) "[lindex [info level 0] 0] "
     append err(usage) "-name packageName -version packageVersion"
     append err(usage) "?-load {filename ?{procs}?}? ... "
@@ -769,10 +681,7 @@ proc ::pkg::create {args} {
     }
     
     # Initialize parameters
-    set opts(-name)		{}
-    set opts(-version)		{}
-    set opts(-source)		{}
-    set opts(-load)		{}
+    array set opts {-name {} -version {} -source {} -load {}}
 
     # process parameters
     for {set i 0} {$i < $len} {incr i} {
@@ -820,12 +729,7 @@ proc ::pkg::create {args} {
     # Handle -load and -source specs
     foreach key {load source} {
 	foreach filespec $opts(-$key) {
-	    foreach {filename proclist} {{} {}} {
-		break
-	    }
-	    foreach {filename proclist} $filespec {
-		break
-	    }
+	    lassign $filespec filename proclist
 	    
 	    if { [llength $proclist] == 0 } {
 		set cmd "\[list $key \[file join \$dir [list $filename]\]\]"
@@ -844,3 +748,4 @@ proc ::pkg::create {args} {
     return $cmdline
 }
 
+interp alias {} ::pkg::create {} ::tcl::Pkg::Create 
diff --git a/library/parray.tcl b/library/parray.tcl
index b544984..3ce9817 100644
--- a/library/parray.tcl
+++ b/library/parray.tcl
@@ -14,13 +14,14 @@ proc parray {a {pattern *}} {
 	error "\"$a\" isn't an array"
     }
     set maxl 0
-    foreach name [lsort [array names array $pattern]] {
+    set names [lsort [array names array $pattern]]
+    foreach name $names {
 	if {[string length $name] > $maxl} {
 	    set maxl [string length $name]
 	}
     }
     set maxl [expr {$maxl + [string length $a] + 2}]
-    foreach name [lsort [array names array $pattern]] {
+    foreach name $names {
 	set nameString [format %s(%s) $a $name]
 	puts stdout [format "%-*s = %s" $maxl $nameString $array($name)]
     }
diff --git a/library/reg/pkgIndex.tcl b/library/reg/pkgIndex.tcl
index 40032a5..1241f2a 100755
--- a/library/reg/pkgIndex.tcl
+++ b/library/reg/pkgIndex.tcl
@@ -1,9 +1,9 @@
 if {![package vsatisfies [package provide Tcl] 8]} return
 if {[info sharedlibextension] != ".dll"} return
 if {[info exists ::tcl_platform(debug)]} {
-    package ifneeded registry 1.1.5 \
-            [list load [file join $dir tclreg11g.dll] registry]
+    package ifneeded registry 1.2.2 \
+            [list load [file join $dir tclreg12g.dll] registry]
 } else {
-    package ifneeded registry 1.1.5 \
-            [list load [file join $dir tclreg11.dll] registry]
+    package ifneeded registry 1.2.2 \
+            [list load [file join $dir tclreg12.dll] registry]
 }
diff --git a/library/safe.tcl b/library/safe.tcl
index a2ab245..1a340a1 100644
--- a/library/safe.tcl
+++ b/library/safe.tcl
@@ -9,914 +9,1119 @@
 #
 # Copyright (c) 1996-1997 Sun Microsystems, Inc.
 #
-# See the file "license.terms" for information on usage and redistribution
-# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+# See the file "license.terms" for information on usage and redistribution of
+# this file, and for a DISCLAIMER OF ALL WARRANTIES.
 
 #
-# The implementation is based on namespaces. These naming conventions
-# are followed:
+# The implementation is based on namespaces. These naming conventions are
+# followed:
 # Private procs starts with uppercase.
 # Public  procs are exported and starts with lowercase
 #
 
 # Needed utilities package
-package require opt 0.4.1;
+package require opt 0.4.1
 
 # Create the safe namespace
 namespace eval ::safe {
-
     # Exported API:
     namespace export interpCreate interpInit interpConfigure interpDelete \
-	    interpAddToAccessPath interpFindInAccessPath setLogCmd
-
-    ####
-    #
-    # Setup the arguments parsing
-    #
-    ####
-
-    # Make sure that our temporary variable is local to this
-    # namespace.  [Bug 981733]
-    variable temp
-
-    # Share the descriptions
-    set temp [::tcl::OptKeyRegister {
-	{-accessPath -list {} "access path for the slave"}
-	{-noStatics "prevent loading of statically linked pkgs"}
-	{-statics true "loading of statically linked pkgs"}
-	{-nestedLoadOk "allow nested loading"}
-	{-nested false "nested loading"}
-	{-deleteHook -script {} "delete hook"}
-    }]
-
-    # create case (slave is optional)
-    ::tcl::OptKeyRegister {
-	{?slave? -name {} "name of the slave (optional)"}
-    } ::safe::interpCreate
-    # adding the flags sub programs to the command program
-    # (relying on Opt's internal implementation details)
-    lappend ::tcl::OptDesc(::safe::interpCreate) $::tcl::OptDesc($temp)
-
-    # init and configure (slave is needed)
-    ::tcl::OptKeyRegister {
-	{slave -name {} "name of the slave"}
-    } ::safe::interpIC
-    # adding the flags sub programs to the command program
-    # (relying on Opt's internal implementation details)
-    lappend ::tcl::OptDesc(::safe::interpIC) $::tcl::OptDesc($temp)
-    # temp not needed anymore
-    ::tcl::OptKeyDelete $temp
-
+	interpAddToAccessPath interpFindInAccessPath setLogCmd
+}
 
-    # Helper function to resolve the dual way of specifying staticsok
-    # (either by -noStatics or -statics 0)
-    proc InterpStatics {} {
-	foreach v {Args statics noStatics} {
-	    upvar $v $v
-	}
-	set flag [::tcl::OptProcArgGiven -noStatics];
-	if {$flag && (!$noStatics == !$statics) 
-	          && ([::tcl::OptProcArgGiven -statics])} {
-	    return -code error\
-		    "conflicting values given for -statics and -noStatics"
-	}
-	if {$flag} {
-	    return [expr {!$noStatics}]
-	} else {
-	    return $statics
-	}
+# Helper function to resolve the dual way of specifying staticsok (either
+# by -noStatics or -statics 0)
+proc ::safe::InterpStatics {} {
+    foreach v {Args statics noStatics} {
+	upvar $v $v
+    }
+    set flag [::tcl::OptProcArgGiven -noStatics]
+    if {$flag && (!$noStatics == !$statics) 
+	&& ([::tcl::OptProcArgGiven -statics])} {
+	return -code error\
+	    "conflicting values given for -statics and -noStatics"
+    }
+    if {$flag} {
+	return [expr {!$noStatics}]
+    } else {
+	return $statics
     }
+}
 
-    # Helper function to resolve the dual way of specifying nested loading
-    # (either by -nestedLoadOk or -nested 1)
-    proc InterpNested {} {
-	foreach v {Args nested nestedLoadOk} {
-	    upvar $v $v
-	}
-	set flag [::tcl::OptProcArgGiven -nestedLoadOk];
-	# note that the test here is the opposite of the "InterpStatics"
-	# one (it is not -noNested... because of the wanted default value)
-	if {$flag && (!$nestedLoadOk != !$nested) 
-	          && ([::tcl::OptProcArgGiven -nested])} {
-	    return -code error\
-		    "conflicting values given for -nested and -nestedLoadOk"
-	}
-	if {$flag} {
-	    # another difference with "InterpStatics"
-	    return $nestedLoadOk
-	} else {
-	    return $nested
-	}
+# Helper function to resolve the dual way of specifying nested loading
+# (either by -nestedLoadOk or -nested 1)
+proc ::safe::InterpNested {} {
+    foreach v {Args nested nestedLoadOk} {
+	upvar $v $v
+    }
+    set flag [::tcl::OptProcArgGiven -nestedLoadOk]
+    # note that the test here is the opposite of the "InterpStatics" one
+    # (it is not -noNested... because of the wanted default value)
+    if {$flag && (!$nestedLoadOk != !$nested) 
+	&& ([::tcl::OptProcArgGiven -nested])} {
+	return -code error\
+	    "conflicting values given for -nested and -nestedLoadOk"
     }
+    if {$flag} {
+	# another difference with "InterpStatics"
+	return $nestedLoadOk
+    } else {
+	return $nested
+    }
+}
 
-    ####
-    #
-    #  API entry points that needs argument parsing :
-    #
-    ####
+####
+#
+#  API entry points that needs argument parsing :
+#
+####
 
+# Interface/entry point function and front end for "Create"
+proc ::safe::interpCreate {args} {
+    set Args [::tcl::OptKeyParse ::safe::interpCreate $args]
+    InterpCreate $slave $accessPath \
+	[InterpStatics] [InterpNested] $deleteHook
+}
 
-    # Interface/entry point function and front end for "Create"
-    proc interpCreate {args} {
-	set Args [::tcl::OptKeyParse ::safe::interpCreate $args]
-	InterpCreate $slave $accessPath \
-		[InterpStatics] [InterpNested] $deleteHook
+proc ::safe::interpInit {args} {
+    set Args [::tcl::OptKeyParse ::safe::interpIC $args]
+    if {![::interp exists $slave]} {
+	return -code error "\"$slave\" is not an interpreter"
     }
+    InterpInit $slave $accessPath \
+	[InterpStatics] [InterpNested] $deleteHook
+}
 
-    proc interpInit {args} {
-	set Args [::tcl::OptKeyParse ::safe::interpIC $args]
-	if {![::interp exists $slave]} {
-	    return -code error "\"$slave\" is not an interpreter"
-	}
-	InterpInit $slave $accessPath \
-		[InterpStatics] [InterpNested] $deleteHook;
+# Check that the given slave is "one of us"
+proc ::safe::CheckInterp {slave} {
+    namespace upvar ::safe S$slave state
+    if {![info exists state] || ![::interp exists $slave]} {
+	return -code error \
+	    "\"$slave\" is not an interpreter managed by ::safe::"
     }
+}
 
-    proc CheckInterp {slave} {
-	if {![IsInterp $slave]} {
-	    return -code error \
-		    "\"$slave\" is not an interpreter managed by ::safe::"
+# Interface/entry point function and front end for "Configure".  This code
+# is awfully pedestrian because it would need more coupling and support
+# between the way we store the configuration values in safe::interp's and
+# the Opt package. Obviously we would like an OptConfigure to avoid
+# duplicating all this code everywhere.
+# -> TODO (the app should share or access easily the program/value stored
+# by opt)
+
+# This is even more complicated by the boolean flags with no values that
+# we had the bad idea to support for the sake of user simplicity in
+# create/init but which makes life hard in configure...
+# So this will be hopefully written and some integrated with opt1.0
+# (hopefully for tcl8.1 ?)
+proc ::safe::interpConfigure {args} {
+    switch [llength $args] {
+	1 {
+	    # If we have exactly 1 argument the semantic is to return all
+	    # the current configuration. We still call OptKeyParse though
+	    # we know that "slave" is our given argument because it also
+	    # checks for the "-help" option.
+	    set Args [::tcl::OptKeyParse ::safe::interpIC $args]
+	    CheckInterp $slave
+	    namespace upvar ::safe S$slave state
+
+	    return [join [list \
+		[list -accessPath $state(access_path)] \
+		[list -statics    $state(staticsok)]   \
+		[list -nested     $state(nestedok)]    \
+	        [list -deleteHook $state(cleanupHook)]]]
 	}
-    }
-
-    # Interface/entry point function and front end for "Configure"
-    # This code is awfully pedestrian because it would need
-    # more coupling and support between the way we store the
-    # configuration values in safe::interp's and the Opt package
-    # Obviously we would like an OptConfigure
-    # to avoid duplicating all this code everywhere. -> TODO
-    # (the app should share or access easily the program/value
-    #  stored by opt)
-    # This is even more complicated by the boolean flags with no values
-    # that we had the bad idea to support for the sake of user simplicity
-    # in create/init but which makes life hard in configure...
-    # So this will be hopefully written and some integrated with opt1.0
-    # (hopefully for tcl8.1 ?)
-    proc interpConfigure {args} {
-	switch [llength $args] {
-	    1 {
-		# If we have exactly 1 argument
-		# the semantic is to return all the current configuration
-		# We still call OptKeyParse though we know that "slave"
-		# is our given argument because it also checks
-		# for the "-help" option.
-		set Args [::tcl::OptKeyParse ::safe::interpIC $args]
-		CheckInterp $slave
-		set res {}
-		lappend res [list -accessPath [Set [PathListName $slave]]]
-		lappend res [list -statics    [Set [StaticsOkName $slave]]]
-		lappend res [list -nested     [Set [NestedOkName $slave]]]
-		lappend res [list -deleteHook [Set [DeleteHookName $slave]]]
-		join $res
+	2 {
+	    # If we have exactly 2 arguments the semantic is a "configure
+	    # get"
+	    lassign $args slave arg
+
+	    # get the flag sub program (we 'know' about Opt's internal
+	    # representation of data)
+	    set desc [lindex [::tcl::OptKeyGetDesc ::safe::interpIC] 2]
+	    set hits [::tcl::OptHits desc $arg]
+	    if {$hits > 1} {
+		return -code error [::tcl::OptAmbigous $desc $arg]
+	    } elseif {$hits == 0} {
+		return -code error [::tcl::OptFlagUsage $desc $arg]
 	    }
-	    2 {
-		# If we have exactly 2 arguments
-		# the semantic is a "configure get"
-		::tcl::Lassign $args slave arg
-		# get the flag sub program (we 'know' about Opt's internal
-		# representation of data)
-		set desc [lindex [::tcl::OptKeyGetDesc ::safe::interpIC] 2]
-		set hits [::tcl::OptHits desc $arg]
-                if {$hits > 1} {
-                    return -code error [::tcl::OptAmbigous $desc $arg]
-                } elseif {$hits == 0} {
-                    return -code error [::tcl::OptFlagUsage $desc $arg]
-                }
-		CheckInterp $slave
-		set item [::tcl::OptCurDesc $desc]
-		set name [::tcl::OptName $item]
-		switch -exact -- $name {
-		    -accessPath {
-			return [list -accessPath [Set [PathListName $slave]]]
-		    }
-		    -statics {
-			return [list -statics    [Set [StaticsOkName $slave]]]
-		    }
-		    -nested {
-			return [list -nested     [Set [NestedOkName $slave]]]
-		    }
-		    -deleteHook {
-			return [list -deleteHook [Set [DeleteHookName $slave]]]
-		    }
-		    -noStatics {
-			# it is most probably a set in fact
-			# but we would need then to jump to the set part
-			# and it is not *sure* that it is a set action
-			# that the user want, so force it to use the
-			# unambigous -statics ?value? instead:
-			return -code error\
-				"ambigous query (get or set -noStatics ?)\
+	    CheckInterp $slave
+	    namespace upvar ::safe S$slave state
+
+	    set item [::tcl::OptCurDesc $desc]
+	    set name [::tcl::OptName $item]
+	    switch -exact -- $name {
+		-accessPath {return [list -accessPath $state(access_path)]}
+		-statics    {return [list -statics    $state(staticsok)]}
+		-nested     {return [list -nested     $state(nestedok)]}
+		-deleteHook {return [list -deleteHook $state(cleanupHook)]}
+		-noStatics {
+		    # it is most probably a set in fact but we would need
+		    # then to jump to the set part and it is not *sure*
+		    # that it is a set action that the user want, so force
+		    # it to use the unambigous -statics ?value? instead:
+		    return -code error\
+			"ambigous query (get or set -noStatics ?)\
 				use -statics instead"
-		    }
-		    -nestedLoadOk {
-			return -code error\
-				"ambigous query (get or set -nestedLoadOk ?)\
-				use -nested instead"
-		    }
-		    default {
-			return -code error "unknown flag $name (bug)"
-		    }
 		}
-	    }
-	    default {
-		# Otherwise we want to parse the arguments like init and create
-		# did
-		set Args [::tcl::OptKeyParse ::safe::interpIC $args]
-		CheckInterp $slave
-		# Get the current (and not the default) values of
-		# whatever has not been given:
-		if {![::tcl::OptProcArgGiven -accessPath]} {
-		    set doreset 1
-		    set accessPath [Set [PathListName $slave]]
-		} else {
-		    set doreset 0
+		-nestedLoadOk {
+		    return -code error\
+			"ambigous query (get or set -nestedLoadOk ?)\
+				use -nested instead"
 		}
-		if {(![::tcl::OptProcArgGiven -statics]) \
-			&& (![::tcl::OptProcArgGiven -noStatics]) } {
-		    set statics    [Set [StaticsOkName $slave]]
-		} else {
-		    set statics    [InterpStatics]
+		default {
+		    return -code error "unknown flag $name (bug)"
 		}
-		if {([::tcl::OptProcArgGiven -nested]) \
-			|| ([::tcl::OptProcArgGiven -nestedLoadOk]) } {
-		    set nested     [InterpNested]
+	    }
+	}
+	default {
+	    # Otherwise we want to parse the arguments like init and
+	    # create did
+	    set Args [::tcl::OptKeyParse ::safe::interpIC $args]
+	    CheckInterp $slave
+	    namespace upvar ::safe S$slave state
+
+	    # Get the current (and not the default) values of whatever has
+	    # not been given:
+	    if {![::tcl::OptProcArgGiven -accessPath]} {
+		set doreset 1
+		set accessPath $state(access_path)
+	    } else {
+		set doreset 0
+	    }
+	    if {
+		![::tcl::OptProcArgGiven -statics]
+		&& ![::tcl::OptProcArgGiven -noStatics]
+	    } {
+		set statics    $state(staticsok)
+	    } else {
+		set statics    [InterpStatics]
+	    }
+	    if {
+		[::tcl::OptProcArgGiven -nested] ||
+		[::tcl::OptProcArgGiven -nestedLoadOk]
+	    } {
+		set nested     [InterpNested]
+	    } else {
+		set nested     $state(nestedok)
+	    }
+	    if {![::tcl::OptProcArgGiven -deleteHook]} {
+		set deleteHook $state(cleanupHook)
+	    }
+	    # we can now reconfigure :
+	    InterpSetConfig $slave $accessPath $statics $nested $deleteHook
+	    # auto_reset the slave (to completly synch the new access_path)
+	    if {$doreset} {
+		if {[catch {::interp eval $slave {auto_reset}} msg]} {
+		    Log $slave "auto_reset failed: $msg"
 		} else {
-		    set nested     [Set [NestedOkName $slave]]
-		}
-		if {![::tcl::OptProcArgGiven -deleteHook]} {
-		    set deleteHook [Set [DeleteHookName $slave]]
-		}
-		# we can now reconfigure :
-		InterpSetConfig $slave $accessPath $statics $nested $deleteHook
-		# auto_reset the slave (to completly synch the new access_path)
-		if {$doreset} {
-		    if {[catch {::interp eval $slave {auto_reset}} msg]} {
-			Log $slave "auto_reset failed: $msg"
-		    } else {
-			Log $slave "successful auto_reset" NOTICE
-		    }
+		    Log $slave "successful auto_reset" NOTICE
 		}
 	    }
 	}
     }
+}
 
+####
+#
+#  Functions that actually implements the exported APIs
+#
+####
 
-    ####
-    #
-    #  Functions that actually implements the exported APIs
-    #
-    ####
-
-
-    #
-    # safe::InterpCreate : doing the real job
-    #
-    # This procedure creates a safe slave and initializes it with the
-    # safe base aliases.
-    # NB: slave name must be simple alphanumeric string, no spaces,
-    # no (), no {},...  {because the state array is stored as part of the name}
-    #
-    # Returns the slave name.
-    #
-    # Optional Arguments : 
-    # + slave name : if empty, generated name will be used
-    # + access_path: path list controlling where load/source can occur,
-    #                if empty: the master auto_path will be used.
-    # + staticsok  : flag, if 0 :no static package can be loaded (load {} Xxx)
-    #                      if 1 :static packages are ok.
-    # + nestedok: flag, if 0 :no loading to sub-sub interps (load xx xx sub)
-    #                      if 1 : multiple levels are ok.
-    
-    # use the full name and no indent so auto_mkIndex can find us
-    proc ::safe::InterpCreate {
-	slave 
-	access_path
-	staticsok
-	nestedok
-	deletehook
-    } {
-	# Create the slave.
-	if {$slave ne ""} {
-	    ::interp create -safe $slave
-	} else {
-	    # empty argument: generate slave name
-	    set slave [::interp create -safe]
-	}
-	Log $slave "Created" NOTICE
-
-	# Initialize it. (returns slave name)
-	InterpInit $slave $access_path $staticsok $nestedok $deletehook
+#
+# safe::InterpCreate : doing the real job
+#
+# This procedure creates a safe slave and initializes it with the safe
+# base aliases.
+# NB: slave name must be simple alphanumeric string, no spaces, no (), no
+# {},...  {because the state array is stored as part of the name}
+#
+# Returns the slave name.
+#
+# Optional Arguments : 
+# + slave name : if empty, generated name will be used
+# + access_path: path list controlling where load/source can occur,
+#                if empty: the master auto_path will be used.
+# + staticsok  : flag, if 0 :no static package can be loaded (load {} Xxx)
+#                      if 1 :static packages are ok.
+# + nestedok: flag, if 0 :no loading to sub-sub interps (load xx xx sub)
+#                      if 1 : multiple levels are ok.
+
+# use the full name and no indent so auto_mkIndex can find us
+proc ::safe::InterpCreate {
+			   slave 
+			   access_path
+			   staticsok
+			   nestedok
+			   deletehook
+		       } {
+    # Create the slave.
+    if {$slave ne ""} {
+	::interp create -safe $slave
+    } else {
+	# empty argument: generate slave name
+	set slave [::interp create -safe]
     }
+    Log $slave "Created" NOTICE
 
+    # Initialize it. (returns slave name)
+    InterpInit $slave $access_path $staticsok $nestedok $deletehook
+}
 
-    #
-    # InterpSetConfig (was setAccessPath) :
-    #    Sets up slave virtual auto_path and corresponding structure
-    #    within the master. Also sets the tcl_library in the slave
-    #    to be the first directory in the path.
-    #    Nb: If you change the path after the slave has been initialized
-    #    you probably need to call "auto_reset" in the slave in order that it
-    #    gets the right auto_index() array values.
-
-    proc ::safe::InterpSetConfig {slave access_path staticsok\
-	    nestedok deletehook} {
-
-	# determine and store the access path if empty
-	if {$access_path eq ""} {
-	    set access_path [uplevel \#0 set auto_path]
-	    # Make sure that tcl_library is in auto_path
-	    # and at the first position (needed by setAccessPath)
-	    set where [lsearch -exact $access_path [info library]]
-	    if {$where == -1} {
-		# not found, add it.
-		set access_path [concat [list [info library]] $access_path]
-		Log $slave "tcl_library was not in auto_path,\
+#
+# InterpSetConfig (was setAccessPath) :
+#    Sets up slave virtual auto_path and corresponding structure within
+#    the master. Also sets the tcl_library in the slave to be the first
+#    directory in the path.
+#    NB: If you change the path after the slave has been initialized you
+#    probably need to call "auto_reset" in the slave in order that it gets
+#    the right auto_index() array values.
+
+proc ::safe::InterpSetConfig {slave access_path staticsok nestedok deletehook} {
+    global auto_path
+
+    # determine and store the access path if empty
+    if {$access_path eq ""} {
+	set access_path $auto_path
+
+	# Make sure that tcl_library is in auto_path and at the first
+	# position (needed by setAccessPath)
+	set where [lsearch -exact $access_path [info library]]
+	if {$where == -1} {
+	    # not found, add it.
+	    set access_path [linsert $access_path 0 [info library]]
+	    Log $slave "tcl_library was not in auto_path,\
 			added it to slave's access_path" NOTICE
-	    } elseif {$where != 0} {
-		# not first, move it first
-		set access_path [concat [list [info library]]\
-			[lreplace $access_path $where $where]]
-		Log $slave "tcl_libray was not in first in auto_path,\
+	} elseif {$where != 0} {
+	    # not first, move it first
+	    set access_path [linsert \
+				 [lreplace $access_path $where $where] \
+				 0 [info library]]
+	    Log $slave "tcl_libray was not in first in auto_path,\
 			moved it to front of slave's access_path" NOTICE
-	    
-	    }
-
-	    # Add 1st level sub dirs (will searched by auto loading from tcl
-	    # code in the slave using glob and thus fail, so we add them
-	    # here so by default it works the same).
-	    set access_path [AddSubDirs $access_path]
 	}
 
-	Log $slave "Setting accessPath=($access_path) staticsok=$staticsok\
+	# Add 1st level sub dirs (will searched by auto loading from tcl
+	# code in the slave using glob and thus fail, so we add them here
+	# so by default it works the same).
+	set access_path [AddSubDirs $access_path]
+    }
+
+    Log $slave "Setting accessPath=($access_path) staticsok=$staticsok\
 		nestedok=$nestedok deletehook=($deletehook)" NOTICE
 
-	# clear old autopath if it existed
-	set nname [PathNumberName $slave]
-	if {[Exists $nname]} {
-	    set n [Set $nname]
-	    for {set i 0} {$i<$n} {incr i} {
-		Unset [PathToken $i $slave]
-	    }
-	}
+    namespace upvar ::safe S$slave state
+
+    # clear old autopath if it existed
+    # build new one
+    # Extend the access list with the paths used to look for Tcl Modules.
+    # We save the virtual form separately as well, as syncing it with the
+    # slave has to be defered until the necessary commands are present for
+    # setup.
+
+    set norm_access_path  {}
+    set slave_access_path {}
+    set map_access_path   {}
+    set remap_access_path {}
+    set slave_tm_path     {}
+
+    set i 0
+    foreach dir $access_path {
+	set token [PathToken $i]
+	lappend slave_access_path  $token
+	lappend map_access_path    $token $dir
+	lappend remap_access_path  $dir $token
+	lappend norm_access_path   [file normalize $dir]
+	incr i
+    }
 
-	# build new one
-	set slave_auto_path {}
-	set i 0
-	foreach dir $access_path {
-	    Set [PathToken $i $slave] $dir
-	    lappend slave_auto_path "\$[PathToken $i]"
-	    incr i
-	}
-	Set $nname $i
-	Set [PathListName $slave] $access_path
-	Set [VirtualPathListName $slave] $slave_auto_path
+    set morepaths [::tcl::tm::list]
+    while {[llength $morepaths]} {
+	set addpaths $morepaths
+	set morepaths {}
 
-	Set [StaticsOkName $slave] $staticsok
-	Set [NestedOkName $slave] $nestedok
-	Set [DeleteHookName $slave] $deletehook
+	foreach dir $addpaths {
+	    # Prevent the addition of dirs on the tm list to the
+	    # result if they are already known.
+	    if {[dict exists $remap_access_path $dir]} {
+		continue
+	    }
 
-	SyncAccessPath $slave
-    }
+	    set token [PathToken $i]
+	    lappend access_path        $dir
+	    lappend slave_access_path  $token
+	    lappend map_access_path    $token $dir
+	    lappend remap_access_path  $dir $token
+	    lappend norm_access_path   [file normalize $dir]
+	    lappend slave_tm_path $token
+	    incr i
 
-    #
-    #
-    # FindInAccessPath:
-    #    Search for a real directory and returns its virtual Id
-    #    (including the "$")
-proc ::safe::interpFindInAccessPath {slave path} {
-	set access_path [GetAccessPath $slave]
-	set where [lsearch -exact $access_path $path]
-	if {$where == -1} {
-	    return -code error "$path not found in access path $access_path"
+	    # [Bug 2854929]
+	    # Recursively find deeper paths which may contain
+	    # modules. Required to handle modules with names like
+	    # 'platform::shell', which translate into
+	    # 'platform/shell-X.tm', i.e arbitrarily deep
+	    # subdirectories.
+	    lappend morepaths {*}[glob -nocomplain -directory $dir -type d *]
 	}
-	return "\$[PathToken $where]"
     }
 
-    #
-    # addToAccessPath:
-    #    add (if needed) a real directory to access path
-    #    and return its virtual token (including the "$").
-proc ::safe::interpAddToAccessPath {slave path} {
-	# first check if the directory is already in there
-	if {![catch {interpFindInAccessPath $slave $path} res]} {
-	    return $res
-	}
-	# new one, add it:
-	set nname [PathNumberName $slave]
-	set n [Set $nname]
-	Set [PathToken $n $slave] $path
-
-	set token "\$[PathToken $n]"
-
-	Lappend [VirtualPathListName $slave] $token
-	Lappend [PathListName $slave] $path
-	Set $nname [expr {$n+1}]
+    set state(access_path)       $access_path
+    set state(access_path,map)   $map_access_path
+    set state(access_path,remap) $remap_access_path
+    set state(access_path,norm)  $norm_access_path
+    set state(access_path,slave) $slave_access_path
+    set state(tm_path_slave)     $slave_tm_path
+    set state(staticsok)         $staticsok
+    set state(nestedok)          $nestedok
+    set state(cleanupHook)       $deletehook
+
+    SyncAccessPath $slave
+}
 
-	SyncAccessPath $slave
+#
+#
+# FindInAccessPath:
+#    Search for a real directory and returns its virtual Id (including the
+#    "$")
+proc ::safe::interpFindInAccessPath {slave path} {
+    namespace upvar ::safe S$slave state
 
-	return $token
+    if {![dict exists $state(access_path,remap) $path]} {
+	return -code error "$path not found in access path $access_path"
     }
 
-    # This procedure applies the initializations to an already existing
-    # interpreter. It is useful when you want to install the safe base
-    # aliases into a preexisting safe interpreter.
-    proc ::safe::InterpInit {
-	slave 
-	access_path
-	staticsok
-	nestedok
-	deletehook
-    } {
-
-	# Configure will generate an access_path when access_path is
-	# empty.
-	InterpSetConfig $slave $access_path $staticsok $nestedok $deletehook
-
-	# These aliases let the slave load files to define new commands
+    return [dict get $state(access_path,remap) $path]
+}
 
-	# NB we need to add [namespace current], aliases are always
-	# absolute paths.
-	::interp alias $slave source {} [namespace current]::AliasSource $slave
-	::interp alias $slave load {} [namespace current]::AliasLoad $slave
+#
+# addToAccessPath:
+#    add (if needed) a real directory to access path and return its
+#    virtual token (including the "$").
+proc ::safe::interpAddToAccessPath {slave path} {
+    # first check if the directory is already in there
+    # (inlined interpFindInAccessPath).
+    namespace upvar ::safe S$slave state
 
-	# This alias lets the slave use the encoding names, convertfrom,
-	# convertto, and system, but not "encoding system <name>" to set
-	# the system encoding.
+    if {[dict exists $state(access_path,remap) $path]} {
+	return [dict get $state(access_path,remap) $path]
+    }
 
-	::interp alias $slave encoding {} [namespace current]::AliasEncoding \
-		$slave
+    # new one, add it:
+    set token [PathToken [llength $state(access_path)]]
 
-	# This alias lets the slave have access to a subset of the 'file'
-	# command functionality.
+    lappend state(access_path)       $path
+    lappend state(access_path,slave) $token
+    lappend state(access_path,map)   $token $path
+    lappend state(access_path,remap) $path $token
+    lappend state(access_path,norm)  [file normalize $path]
 
-	AliasSubset $slave file file dir.* join root.* ext.* tail \
-		path.* split
+    SyncAccessPath $slave
+    return $token
+}
 
-	# This alias interposes on the 'exit' command and cleanly terminates
-	# the slave.
+# This procedure applies the initializations to an already existing
+# interpreter. It is useful when you want to install the safe base aliases
+# into a preexisting safe interpreter.
+proc ::safe::InterpInit {
+			 slave 
+			 access_path
+			 staticsok
+			 nestedok
+			 deletehook
+		     } {
+    # Configure will generate an access_path when access_path is empty.
+    InterpSetConfig $slave $access_path $staticsok $nestedok $deletehook
+
+    # NB we need to add [namespace current], aliases are always absolute
+    # paths.
+
+    # These aliases let the slave load files to define new commands
+    # This alias lets the slave use the encoding names, convertfrom,
+    # convertto, and system, but not "encoding system <name>" to set the
+    # system encoding.
+    # Handling Tcl Modules, we need a restricted form of Glob.
+    # This alias interposes on the 'exit' command and cleanly terminates
+    # the slave.
+
+    foreach {command alias} {
+	source   AliasSource
+	load     AliasLoad
+	encoding AliasEncoding
+	exit     interpDelete
+	glob     AliasGlob
+    } {
+	::interp alias $slave $command {} [namespace current]::$alias $slave
+    }
 
-	::interp alias $slave exit {} [namespace current]::interpDelete $slave
+    # This alias lets the slave have access to a subset of the 'file'
+    # command functionality.
 
-	# The allowed slave variables already have been set
-	# by Tcl_MakeSafe(3)
+    AliasSubset $slave file \
+	file  dir.* join root.* ext.* tail path.* split
 
+    # Subcommands of info
+    foreach {subcommand alias} {
+	nameofexecutable   AliasExeName
+    } {
+	::interp alias $slave ::tcl::info::$subcommand \
+	    {} [namespace current]::$alias $slave
+    }
 
-	# Source init.tcl into the slave, to get auto_load and other
-	# procedures defined:
+    # The allowed slave variables already have been set by Tcl_MakeSafe(3)
 
-	# We don't try to use the -rsrc on the mac because it would get
-	# confusing if you would want to customize init.tcl
-	# for a given set of safe slaves, on all the platforms
-	# you just need to give a specific access_path and
-	# the mac should be no exception. As there is no
-	# obvious full "safe ressources" design nor implementation
-	# for the mac, safe interps there will just don't
-	# have that ability. (A specific app can still reenable
-	# that using custom aliases if they want to).
-	# It would also make the security analysis and the Safe Tcl security
-	# model platform dependant and thus more error prone.
+    # Source init.tcl and tm.tcl into the slave, to get auto_load and
+    # other procedures defined:
 
-	if {[catch {::interp eval $slave\
-		{source [file join $tcl_library init.tcl]}} msg]} {
-	    Log $slave "can't source init.tcl ($msg)"
-	    error "can't source init.tcl into slave $slave ($msg)"
-	}
+    if {[catch {::interp eval $slave {
+	source [file join $tcl_library init.tcl]
+    }} msg]} {
+	Log $slave "can't source init.tcl ($msg)"
+	return -code error "can't source init.tcl into slave $slave ($msg)"
+    }
 
-	return $slave
+    if {[catch {::interp eval $slave {
+	source [file join $tcl_library tm.tcl]
+    }} msg]} {
+	Log $slave "can't source tm.tcl ($msg)"
+	return -code error "can't source tm.tcl into slave $slave ($msg)"
     }
 
+    # Sync the paths used to search for Tcl modules. This can be done only
+    # now, after tm.tcl was loaded.
+    namespace upvar ::safe S$slave state
+    if {[llength $state(tm_path_slave)] > 0} {
+	::interp eval $slave [list \
+		::tcl::tm::add {*}[lreverse $state(tm_path_slave)]]
+    }
+    return $slave
+}
 
-    # Add (only if needed, avoid duplicates) 1 level of
-    # sub directories to an existing path list.
-    # Also removes non directories from the returned list.
-    proc AddSubDirs {pathList} {
-	set res {}
-	foreach dir $pathList {
-	    if {[file isdirectory $dir]} {
-		# check that we don't have it yet as a children
-		# of a previous dir
-		if {[lsearch -exact $res $dir]<0} {
-		    lappend res $dir
-		}
-		foreach sub [glob -directory $dir -nocomplain *] {
-		    if {([file isdirectory $sub]) \
-			    && ([lsearch -exact $res $sub]<0) } {
-			# new sub dir, add it !
-	                lappend res $sub
-	            }
+# Add (only if needed, avoid duplicates) 1 level of sub directories to an
+# existing path list.  Also removes non directories from the returned
+# list.
+proc ::safe::AddSubDirs {pathList} {
+    set res {}
+    foreach dir $pathList {
+	if {[file isdirectory $dir]} {
+	    # check that we don't have it yet as a children of a previous
+	    # dir
+	    if {$dir ni $res} {
+		lappend res $dir
+	    }
+	    foreach sub [glob -directory $dir -nocomplain *] {
+		if {[file isdirectory $sub] && ($sub ni $res)} {
+		    # new sub dir, add it !
+		    lappend res $sub
 		}
 	    }
 	}
-	return $res
     }
+    return $res
+}
 
-    # This procedure deletes a safe slave managed by Safe Tcl and
-    # cleans up associated state:
+# This procedure deletes a safe slave managed by Safe Tcl and cleans up
+# associated state:
 
 proc ::safe::interpDelete {slave} {
-
-        Log $slave "About to delete" NOTICE
-
-	# If the slave has a cleanup hook registered, call it.
-	# check the existance because we might be called to delete an interp
-	# which has not been registered with us at all
-	set hookname [DeleteHookName $slave]
-	if {[Exists $hookname]} {
-	    set hook [Set $hookname]
-	    if {![::tcl::Lempty $hook]} {
-		# remove the hook now, otherwise if the hook
-		# calls us somehow, we'll loop
-		Unset $hookname
-		if {[catch {eval $hook [list $slave]} err]} {
-		    Log $slave "Delete hook error ($err)"
-		}
+    Log $slave "About to delete" NOTICE
+
+    namespace upvar ::safe S$slave state
+
+    # If the slave has a cleanup hook registered, call it.  Check the
+    # existance because we might be called to delete an interp which has
+    # not been registered with us at all
+
+    if {[info exists state(cleanupHook)]} {
+	set hook $state(cleanupHook)
+	if {[llength $hook]} {
+	    # remove the hook now, otherwise if the hook calls us somehow,
+	    # we'll loop
+	    unset state(cleanupHook)
+	    if {[catch {
+		{*}$hook $slave
+	    } err]} {
+		Log $slave "Delete hook error ($err)"
 	    }
 	}
+    }
 
-	# Discard the global array of state associated with the slave, and
-	# delete the interpreter.
-
-	set statename [InterpStateName $slave]
-	if {[Exists $statename]} {
-	    Unset $statename
-	}
+    # Discard the global array of state associated with the slave, and
+    # delete the interpreter.
 
-	# if we have been called twice, the interp might have been deleted
-	# already
-	if {[::interp exists $slave]} {
-	    ::interp delete $slave
-	    Log $slave "Deleted" NOTICE
-	}
+    if {[info exists state]} {
+	unset state
+    }
 
-	return
+    # if we have been called twice, the interp might have been deleted
+    # already
+    if {[::interp exists $slave]} {
+	::interp delete $slave
+	Log $slave "Deleted" NOTICE
     }
 
-    # Set (or get) the loging mecanism 
+    return
+}
+
+# Set (or get) the logging mecanism 
 
 proc ::safe::setLogCmd {args} {
     variable Log
-    if {[llength $args] == 0} {
+    set la [llength $args]
+    if {$la == 0} {
 	return $Log
+    } elseif {$la == 1} {
+	set Log [lindex $args 0]
+    } else {
+	set Log $args
+    }
+
+    if {$Log eq ""} {
+	# Disable logging completely. Calls to it will be compiled out
+	# of all users.
+	proc ::safe::Log {args} {}
     } else {
-	if {[llength $args] == 1} {
-	    set Log [lindex $args 0]
-	} else {
-	    set Log $args
+	# Activate logging, define proper command.
+
+	proc ::safe::Log {slave msg {type ERROR}} {
+	    variable Log
+	    {*}$Log "$type for slave $slave : $msg"
+	    return
 	}
     }
 }
 
-    # internal variable
-    variable Log {}
+# ------------------- END OF PUBLIC METHODS ------------
 
-    # ------------------- END OF PUBLIC METHODS ------------
+#
+# Sets the slave auto_path to the master recorded value.  Also sets
+# tcl_library to the first token of the virtual path.
+#
+proc ::safe::SyncAccessPath {slave} {
+    namespace upvar ::safe S$slave state
 
+    set slave_access_path $state(access_path,slave)
+    ::interp eval $slave [list set auto_path $slave_access_path]
 
-    #
-    # sets the slave auto_path to the master recorded value.
-    # also sets tcl_library to the first token of the virtual path.
-    #
-    proc SyncAccessPath {slave} {
-	set slave_auto_path [Set [VirtualPathListName $slave]]
-	::interp eval $slave [list set auto_path $slave_auto_path]
-	Log $slave "auto_path in $slave has been set to $slave_auto_path"\
-		NOTICE
-	::interp eval $slave [list set tcl_library [lindex $slave_auto_path 0]]
-    }
-
-    # base name for storing all the slave states
-    # the array variable name for slave foo is thus "Sfoo"
-    # and for sub slave {foo bar} "Sfoo bar" (spaces are handled
-    # ok everywhere (or should))
-    # We add the S prefix to avoid that a slave interp called "Log"
-    # would smash our "Log" variable.
-    proc InterpStateName {slave} {
-	return "S$slave"
-    }
-
-    # Check that the given slave is "one of us"
-    proc IsInterp {slave} {
-	expr {[Exists [InterpStateName $slave]] && [::interp exists $slave]}
-    }
-
-    # returns the virtual token for directory number N
-    # if the slave argument is given, 
-    # it will return the corresponding master global variable name
-    proc PathToken {n {slave ""}} {
-	if {$slave ne ""} {
-	    return "[InterpStateName $slave](access_path,$n)"
-	} else {
-	    # We need to have a ":" in the token string so
-	    # [file join] on the mac won't turn it into a relative
-	    # path.
-	    return "p(:$n:)"
-	}
-    }
-    # returns the variable name of the complete path list
-    proc PathListName {slave} {
-	return "[InterpStateName $slave](access_path)"
-    }
-    # returns the variable name of the complete path list
-    proc VirtualPathListName {slave} {
-	return "[InterpStateName $slave](access_path_slave)"
-    }
-    # returns the variable name of the number of items
-    proc PathNumberName {slave} {
-	return "[InterpStateName $slave](access_path,n)"
-    }
-    # returns the staticsok flag var name
-    proc StaticsOkName {slave} {
-	return "[InterpStateName $slave](staticsok)"
+    Log $slave "auto_path in $slave has been set to $slave_access_path"\
+	NOTICE
+
+    # This code assumes that info library is the first element in the
+    # list of auto_path's. See -> InterpSetConfig for the code which
+    # ensures this condition.
+
+    ::interp eval $slave [list \
+	      set tcl_library [lindex $slave_access_path 0]]
+}
+
+# Returns the virtual token for directory number N.
+proc ::safe::PathToken {n} {
+    # We need to have a ":" in the token string so [file join] on the
+    # mac won't turn it into a relative path.
+    return "\$p(:$n:)" ;# Form tested by case 7.2
+}
+
+#
+# translate virtual path into real path
+#
+proc ::safe::TranslatePath {slave path} {
+    namespace upvar ::safe S$slave state
+
+    # somehow strip the namespaces 'functionality' out (the danger is that
+    # we would strip valid macintosh "../" queries... :
+    if {[string match "*::*" $path] || [string match "*..*" $path]} {
+	return -code error "invalid characters in path $path"
     }
-    # returns the nestedok flag var name
-    proc NestedOkName {slave} {
-	return "[InterpStateName $slave](nestedok)"
+
+    # Use a cached map instead of computed local vars and subst.
+
+    return [string map $state(access_path,map) $path]
+}
+
+# file name control (limit access to files/resources that should be a
+# valid tcl source file)
+proc ::safe::CheckFileName {slave file} {
+    # This used to limit what can be sourced to ".tcl" and forbid files
+    # with more than 1 dot and longer than 14 chars, but I changed that
+    # for 8.4 as a safe interp has enough internal protection already to
+    # allow sourcing anything. - hobbs
+
+    if {![file exists $file]} {
+	# don't tell the file path
+	return -code error "no such file or directory"
     }
-    # Run some code at the namespace toplevel
-    proc Toplevel {args} {
-	namespace eval [namespace current] $args
+
+    if {![file readable $file]} {
+	# don't tell the file path
+	return -code error "not readable"
     }
-    # set/get values
-    proc Set {args} {
-	eval [linsert $args 0 Toplevel set]
+}
+
+# AliasGlob is the target of the "glob" alias in safe interpreters.
+proc ::safe::AliasGlob {slave args} {
+    Log $slave "GLOB ! $args" NOTICE
+    set cmd {}
+    set at 0
+    array set got {
+	-directory 0
+	-nocomplain 0
+	-join 0
+	-tails 0
+	-- 0
     }
-    # lappend on toplevel vars
-    proc Lappend {args} {
-	eval [linsert $args 0 Toplevel lappend]
+
+    if {$::tcl_platform(platform) eq "windows"} {
+	set dirPartRE {^(.*)[\\/]([^\\/]*)$}
+    } else {
+	set dirPartRE {^(.*)/([^/]*)$}
     }
-    # unset a var/token (currently just an global level eval)
-    proc Unset {args} {
-	eval [linsert $args 0 Toplevel unset]
+
+    set dir        {}
+    set virtualdir {}
+
+    while {$at < [llength $args]} {
+	switch -glob -- [set opt [lindex $args $at]] {
+	    -nocomplain - -- - -join - -tails {
+		lappend cmd $opt
+		set got($opt) 1
+		incr at
+	    }
+	    -types - -type {
+		lappend cmd -types [lindex $args [incr at]]
+		incr at
+	    }
+	    -directory {
+		if {$got($opt)} {
+		    return -code error \
+			{"-directory" cannot be used with "-path"}
+		}
+		set got($opt) 1
+		set virtualdir [lindex $args [incr at]]
+		incr at
+	    }
+	    pkgIndex.tcl {
+		# Oops, this is globbing a subdirectory in regular package
+		# search. That is not wanted. Abort, handler does catch
+		# already (because glob was not defined before). See
+		# package.tcl, lines 484ff in tclPkgUnknown.
+		return -code error "unknown command glob"
+	    }
+	    -* {
+		Log $slave "Safe base rejecting glob option '$opt'"
+		return -code error "Safe base rejecting glob option '$opt'"
+	    }
+	    default {
+		break
+	    }
+	}
+	if {$got(--)} break
     }
-    # test existance 
-    proc Exists {varname} {
-	Toplevel info exists $varname
+
+    # Get the real path from the virtual one and check that the path is in the
+    # access path of that slave. Done after basic argument processing so that
+    # we know if -nocomplain is set.
+    if {$got(-directory)} {
+	if {[catch {
+	    set dir [TranslatePath $slave $virtualdir]
+	    DirInAccessPath $slave $dir
+	} msg]} {
+	    Log $slave $msg
+	    if {$got(-nocomplain)} {
+		return
+	    }
+	    return -code error "permission denied"
+	}
+	lappend cmd -directory $dir
     }
-    # short cut for access path getting
-    proc GetAccessPath {slave} {
-	Set [PathListName $slave]
+
+    # Apply the -join semantics ourselves
+    if {$got(-join)} {
+	set args [lreplace $args $at end [join [lrange $args $at end] "/"]]
     }
-    # short cut for statics ok flag getting
-    proc StaticsOk {slave} {
-	Set [StaticsOkName $slave]
+
+    # Process remaining pattern arguments
+    set firstPattern [llength $cmd]
+    foreach opt [lrange $args $at end] {
+	if {![regexp $dirPartRE $opt -> thedir thefile]} {
+	    set thedir .
+	}
+	if {$thedir eq "*"} {
+	    set mapped 0
+	    foreach d [glob -directory [TranslatePath $slave $virtualdir] \
+			   -types d -tails *] {
+		catch {
+		    DirInAccessPath $slave \
+			[TranslatePath $slave [file join $virtualdir $d]]
+		    if {$thefile eq "pkgIndex.tcl" || $thefile eq "*.tm"} {
+			lappend cmd [file join $d $thefile]
+			set mapped 1
+		    }
+		}
+	    }
+	    if {$mapped} continue
+	}
+	if {[catch {
+	    set thedir [file join $virtualdir $thedir]
+	    DirInAccessPath $slave [TranslatePath $slave $thedir]
+	} msg]} {
+	    Log $slave $msg
+	    if {$got(-nocomplain)} continue
+	    return -code error "permission denied"
+	}
+	lappend cmd $opt
     }
-    # short cut for getting the multiples interps sub loading ok flag
-    proc NestedOk {slave} {
-	Set [NestedOkName $slave]
+
+    Log $slave "GLOB = $cmd" NOTICE
+
+    if {$got(-nocomplain) && [llength $cmd] eq $firstPattern} {
+	return
     }
-    # interp deletion storing hook name
-    proc DeleteHookName {slave} {
-	return [InterpStateName $slave](cleanupHook)
+    if {[catch {
+	::interp invokehidden $slave glob {*}$cmd
+    } msg]} {
+	Log $slave $msg
+	return -code error "script error"
     }
 
-    #
-    # translate virtual path into real path
-    #
-    proc TranslatePath {slave path} {
-	# somehow strip the namespaces 'functionality' out (the danger
-	# is that we would strip valid macintosh "../" queries... :
-	if {[regexp {(::)|(\.\.)} $path]} {
-	    error "invalid characters in path $path"
-	}
-	set n [expr {[Set [PathNumberName $slave]]-1}]
-	for {} {$n>=0} {incr n -1} {
-	    # fill the token virtual names with their real value
-	    set [PathToken $n] [Set [PathToken $n $slave]]
+    Log $slave "GLOB < $msg" NOTICE
+
+    # Translate path back to what the slave should see.
+    set res {}
+    set l [string length $dir]
+    foreach p $msg {
+	if {[string equal -length $l $dir $p]} {
+	    set p [string replace $p 0 [expr {$l-1}] $virtualdir]
 	}
-	# replaces the token by their value
-	subst -nobackslashes -nocommands $path
+	lappend res $p
     }
 
+    Log $slave "GLOB > $res" NOTICE
+    return $res
+}
 
-    # Log eventually log an error
-    # to enable error logging, set Log to {puts stderr} for instance
-    proc Log {slave msg {type ERROR}} {
-	variable Log
-	if {[info exists Log] && [llength $Log]} {
-	    eval $Log [list "$type for slave $slave : $msg"]
+# AliasSource is the target of the "source" alias in safe interpreters.
+
+proc ::safe::AliasSource {slave args} {
+    set argc [llength $args]
+    # Extended for handling of Tcl Modules to allow not only "source
+    # filename", but "source -encoding E filename" as well.
+    if {[lindex $args 0] eq "-encoding"} {
+	incr argc -2
+	set encoding [lindex $args 1]
+	set at 2
+	if {$encoding eq "identity"} {
+	    Log $slave "attempt to use the identity encoding"
+	    return -code error "permission denied"
 	}
+    } else {
+	set at 0
+	set encoding {}
+    }
+    if {$argc != 1} {
+	set msg "wrong # args: should be \"source ?-encoding E? fileName\""
+	Log $slave "$msg ($args)"
+	return -code error $msg
+    }
+    set file [lindex $args $at]
+    
+    # get the real path from the virtual one.
+    if {[catch {
+	set realfile [TranslatePath $slave $file]
+    } msg]} {
+	Log $slave $msg
+	return -code error "permission denied"
+    }
+    
+    # check that the path is in the access path of that slave
+    if {[catch {
+	FileInAccessPath $slave $realfile
+    } msg]} {
+	Log $slave $msg
+	return -code error "permission denied"
     }
 
+    # do the checks on the filename :
+    if {[catch {
+	CheckFileName $slave $realfile
+    } msg]} {
+	Log $slave "$realfile:$msg"
+	return -code error $msg
+    }
 
-    # file name control (limit access to files/ressources that should be
-    # a valid tcl source file)
-    proc CheckFileName {slave file} {
-	# This used to limit what can be sourced to ".tcl" and forbid files
-	# with more than 1 dot and longer than 14 chars, but I changed that
-	# for 8.4 as a safe interp has enough internal protection already
-	# to allow sourcing anything. - hobbs
-
-	if {![file exists $file]} {
-	    # don't tell the file path
-	    error "no such file or directory"
+    # Passed all the tests, lets source it. Note that we do this all manually
+    # because we want to control [info script] in the slave so information
+    # doesn't leak so much. [Bug 2913625]
+    set old [::interp eval $slave {info script}]
+    set code [catch {
+	set f [open $realfile]
+	fconfigure $f -eofchar \032
+	if {$encoding ne ""} {
+	    fconfigure $f -encoding $encoding
 	}
+	set contents [read $f]
+	close $f
+	::interp eval $slave [list info script $file]
+	::interp eval $slave $contents
+    } msg opt]
+    catch {interp eval $slave [list info script $old]}
+    # Note that all non-errors are fine result codes from [source], so we must
+    # take a little care to do it properly. [Bug 2923613]
+    if {$code == 1} {
+	Log $slave $msg
+	return -code error "script error"
+    }
+    return -code $code -options $opt $msg
+}
 
-	if {![file readable $file]} {
-	    # don't tell the file path
-	    error "not readable"
-	}
+# AliasLoad is the target of the "load" alias in safe interpreters.
+
+proc ::safe::AliasLoad {slave file args} {
+    set argc [llength $args]
+    if {$argc > 2} {
+	set msg "load error: too many arguments"
+	Log $slave "$msg ($argc) {$file $args}"
+	return -code error $msg
     }
 
+    # package name (can be empty if file is not).
+    set package [lindex $args 0]
 
-    # AliasSource is the target of the "source" alias in safe interpreters.
+    namespace upvar ::safe S$slave state
 
-    proc AliasSource {slave args} {
+    # Determine where to load. load use a relative interp path and {}
+    # means self, so we can directly and safely use passed arg.
+    set target [lindex $args 1]
+    if {$target ne ""} {
+	# we will try to load into a sub sub interp; check that we want to
+	# authorize that.
+	if {!$state(nestedok)} {
+	    Log $slave "loading to a sub interp (nestedok)\
+			disabled (trying to load $package to $target)"
+	    return -code error "permission denied (nested load)"
+	}
+    }
 
-	set argc [llength $args]
-	# Allow only "source filename"
-	# (and not mac specific -rsrc for instance - see comment in ::init
-	# for current rationale)
-	if {$argc != 1} {
-	    set msg "wrong # args: should be \"source fileName\""
-	    Log $slave "$msg ($args)"
+    # Determine what kind of load is requested
+    if {$file eq ""} {
+	# static package loading
+	if {$package eq ""} {
+	    set msg "load error: empty filename and no package name"
+	    Log $slave $msg
 	    return -code error $msg
 	}
-	set file [lindex $args 0]
-	
-	# get the real path from the virtual one.
-	if {[catch {set file [TranslatePath $slave $file]} msg]} {
-	    Log $slave $msg
-	    return -code error "permission denied"
+	if {!$state(staticsok)} {
+	    Log $slave "static packages loading disabled\
+			(trying to load $package to $target)"
+	    return -code error "permission denied (static package)"
 	}
-	
-	# check that the path is in the access path of that slave
-	if {[catch {FileInAccessPath $slave $file} msg]} {
+    } else {
+	# file loading
+
+	# get the real path from the virtual one.
+	if {[catch {
+	    set file [TranslatePath $slave $file]
+	} msg]} {
 	    Log $slave $msg
 	    return -code error "permission denied"
 	}
 
-	# do the checks on the filename :
-	if {[catch {CheckFileName $slave $file} msg]} {
-	    Log $slave "$file:$msg"
-	    return -code error $msg
-	}
-
-	# passed all the tests , lets source it:
-	if {[catch {::interp invokehidden $slave source $file} msg]} {
+	# check the translated path
+	if {[catch {
+	    FileInAccessPath $slave $file
+	} msg]} {
 	    Log $slave $msg
-	    return -code error "script error"
+	    return -code error "permission denied (path)"
 	}
-	return $msg
     }
 
-    # AliasLoad is the target of the "load" alias in safe interpreters.
+    if {[catch {
+	::interp invokehidden $slave load $file $package $target
+    } msg]} {
+	Log $slave $msg
+	return -code error $msg
+    }
+
+    return $msg
+}
 
-    proc AliasLoad {slave file args} {
+# FileInAccessPath raises an error if the file is not found in the list of
+# directories contained in the (master side recorded) slave's access path.
 
-	set argc [llength $args]
-	if {$argc > 2} {
-	    set msg "load error: too many arguments"
-	    Log $slave "$msg ($argc) {$file $args}"
-	    return -code error $msg
-	}
+# the security here relies on "file dirname" answering the proper
+# result... needs checking ?
+proc ::safe::FileInAccessPath {slave file} {
+    namespace upvar ::safe S$slave state
+    set access_path $state(access_path)
 
-	# package name (can be empty if file is not).
-	set package [lindex $args 0]
-
-	# Determine where to load. load use a relative interp path
-	# and {} means self, so we can directly and safely use passed arg.
-	set target [lindex $args 1]
-	if {$target ne ""} {
-	    # we will try to load into a sub sub interp
-	    # check that we want to authorize that.
-	    if {![NestedOk $slave]} {
-		Log $slave "loading to a sub interp (nestedok)\
-			disabled (trying to load $package to $target)"
-		return -code error "permission denied (nested load)"
-	    }
-	    
-	}
+    if {[file isdirectory $file]} {
+	return -code error "\"$file\": is a directory"
+    }
+    set parent [file dirname $file]
 
-	# Determine what kind of load is requested
-	if {$file eq ""} {
-	    # static package loading
-	    if {$package eq ""} {
-		set msg "load error: empty filename and no package name"
-		Log $slave $msg
-		return -code error $msg
-	    }
-	    if {![StaticsOk $slave]} {
-		Log $slave "static packages loading disabled\
-			(trying to load $package to $target)"
-		return -code error "permission denied (static package)"
-	    }
-	} else {
-	    # file loading
+    # Normalize paths for comparison since lsearch knows nothing of
+    # potential pathname anomalies.
+    set norm_parent [file normalize $parent]
 
-	    # get the real path from the virtual one.
-	    if {[catch {set file [TranslatePath $slave $file]} msg]} {
-		Log $slave $msg
-		return -code error "permission denied"
-	    }
+    namespace upvar ::safe S$slave state
+    if {$norm_parent ni $state(access_path,norm)} {
+	return -code error "\"$file\": not in access_path"
+    }
+}
 
-	    # check the translated path
-	    if {[catch {FileInAccessPath $slave $file} msg]} {
-		Log $slave $msg
-		return -code error "permission denied (path)"
-	    }
-	}
+proc ::safe::DirInAccessPath {slave dir} {
+    namespace upvar ::safe S$slave state
+    set access_path $state(access_path)
 
-	if {[catch {::interp invokehidden\
-		$slave load $file $package $target} msg]} {
-	    Log $slave $msg
-	    return -code error $msg
-	}
+    if {[file isfile $dir]} {
+	return -code error "\"$dir\": is a file"
+    }
 
-	return $msg
+    # Normalize paths for comparison since lsearch knows nothing of
+    # potential pathname anomalies.
+    set norm_dir [file normalize $dir]
+
+    namespace upvar ::safe S$slave state
+    if {$norm_dir ni $state(access_path,norm)} {
+	return -code error "\"$dir\": not in access_path"
     }
+}
 
-    # FileInAccessPath raises an error if the file is not found in
-    # the list of directories contained in the (master side recorded) slave's
-    # access path.
+# This procedure enables access from a safe interpreter to only a subset
+# of the subcommands of a command:
 
-    # the security here relies on "file dirname" answering the proper
-    # result.... needs checking ?
-    proc FileInAccessPath {slave file} {
+proc ::safe::Subset {slave command okpat args} {
+    set subcommand [lindex $args 0]
+    if {[regexp $okpat $subcommand]} {
+	return [$command {*}$args]
+    }
+    set msg "not allowed to invoke subcommand $subcommand of $command"
+    Log $slave $msg
+    return -code error $msg
+}
 
-	set access_path [GetAccessPath $slave]
+# This procedure installs an alias in a slave that invokes "safesubset" in
+# the master to execute allowed subcommands. It precomputes the pattern of
+# allowed subcommands; you can use wildcards in the pattern if you wish to
+# allow subcommand abbreviation.
+#
+# Syntax is: AliasSubset slave alias target subcommand1 subcommand2...
 
-	if {[file isdirectory $file]} {
-	    error "\"$file\": is a directory"
-	}
-	set parent [file dirname $file]
+proc ::safe::AliasSubset {slave alias target args} {
+    set pat "^([join $args |])\$"
+    ::interp alias $slave $alias {}\
+	[namespace current]::Subset $slave $target $pat
+}
 
-	# Normalize paths for comparison since lsearch knows nothing of
-	# potential pathname anomalies.
-	set norm_parent [file normalize $parent]
-	foreach path $access_path {
-	    lappend norm_access_path [file normalize $path]
-	}
+# AliasEncoding is the target of the "encoding" alias in safe interpreters.
 
-	if {[lsearch -exact $norm_access_path $norm_parent] == -1} {
-	    error "\"$file\": not in access_path"
-	}
+proc ::safe::AliasEncoding {slave option args} {
+    # Careful; do not want empty option to get through to the [string equal]
+    if {[regexp {^(name.*|convert.*|)$} $option]} {
+	return [::interp invokehidden $slave encoding $option {*}$args]
     }
 
-    # This procedure enables access from a safe interpreter to only a subset of
-    # the subcommands of a command:
-
-    proc Subset {slave command okpat args} {
-	set subcommand [lindex $args 0]
-	if {[regexp $okpat $subcommand]} {
-	    return [eval [linsert $args 0 $command]]
+    if {[string equal -length [string length $option] $option "system"]} {
+	if {[llength $args] == 0} {
+	    # passed all the tests , lets source it:
+	    if {[catch {
+		set sysenc [::interp invokehidden $slave encoding system]
+	    } msg]} {
+		Log $slave $msg
+		return -code error "script error"
+	    }
+	    return $sysenc
 	}
-	set msg "not allowed to invoke subcommand $subcommand of $command"
-	Log $slave $msg
-	error $msg
+	set msg "wrong # args: should be \"encoding system\""
+	set code {TCL WRONGARGS}
+    } else {
+	set msg "bad option \"$option\": must be convertfrom, convertto, names, or system"
+	set code [list TCL LOOKUP INDEX option $option]
     }
+    Log $slave $msg
+    return -code error -errorcode $code $msg
+}
+
+# Various minor hiding of platform features. [Bug 2913625]
 
-    # This procedure installs an alias in a slave that invokes "safesubset"
-    # in the master to execute allowed subcommands. It precomputes the pattern
-    # of allowed subcommands; you can use wildcards in the pattern if you wish
-    # to allow subcommand abbreviation.
+proc ::safe::AliasExeName {slave} {
+    return ""
+}
+
+proc ::safe::Setup {} {
+    ####
     #
-    # Syntax is: AliasSubset slave alias target subcommand1 subcommand2...
+    # Setup the arguments parsing
+    #
+    ####
 
-    proc AliasSubset {slave alias target args} {
-	set pat ^(; set sep ""
-	foreach sub $args {
-	    append pat $sep$sub
-	    set sep |
-	}
-	append pat )\$
-	::interp alias $slave $alias {}\
-		[namespace current]::Subset $slave $target $pat
-    }
+    # Share the descriptions
+    set temp [::tcl::OptKeyRegister {
+	{-accessPath -list {} "access path for the slave"}
+	{-noStatics "prevent loading of statically linked pkgs"}
+	{-statics true "loading of statically linked pkgs"}
+	{-nestedLoadOk "allow nested loading"}
+	{-nested false "nested loading"}
+	{-deleteHook -script {} "delete hook"}
+    }]
 
-    # AliasEncoding is the target of the "encoding" alias in safe interpreters.
+    # create case (slave is optional)
+    ::tcl::OptKeyRegister {
+	{?slave? -name {} "name of the slave (optional)"}
+    } ::safe::interpCreate
 
-    proc AliasEncoding {slave args} {
+    # adding the flags sub programs to the command program (relying on Opt's
+    # internal implementation details)
+    lappend ::tcl::OptDesc(::safe::interpCreate) $::tcl::OptDesc($temp)
 
-	set argc [llength $args]
+    # init and configure (slave is needed)
+    ::tcl::OptKeyRegister {
+	{slave -name {} "name of the slave"}
+    } ::safe::interpIC
 
-	set okpat "^(name.*|convert.*)\$"
-	set subcommand [lindex $args 0]
+    # adding the flags sub programs to the command program (relying on Opt's
+    # internal implementation details)
+    lappend ::tcl::OptDesc(::safe::interpIC) $::tcl::OptDesc($temp)
 
-	if {[regexp $okpat $subcommand]} {
-	    return [eval [linsert $args 0 \
-		    ::interp invokehidden $slave encoding]]
-	}
+    # temp not needed anymore
+    ::tcl::OptKeyDelete $temp
 
-	if {[string first $subcommand system] == 0} {
-	    if {$argc == 1} {
-		# passed all the tests , lets source it:
-		if {[catch {::interp invokehidden \
-			$slave encoding system} msg]} {
-		    Log $slave $msg
-		    return -code error "script error"
-		}
-	    } else {
-		set msg "wrong # args: should be \"encoding system\""
-		Log $slave $msg
-		error $msg
-	    }
-	} else {
-	    set msg "wrong # args: should be \"encoding option ?arg ...?\""
-	    Log $slave $msg
-	    error $msg
-	}
+    ####
+    #
+    # Default: No logging.
+    #
+    ####
 
-	return $msg
-    }
+    setLogCmd {}
 
+    # Log eventually.
+    # To enable error logging, set Log to {puts stderr} for instance,
+    # via setLogCmd.
+    return
 }
+
+namespace eval ::safe {
+    # internal variables
+
+    # Log command, set via 'setLogCmd'. Logging is disabled when empty.
+    variable Log {}
+
+    # The package maintains a state array per slave interp under its
+    # control. The name of this array is S<interp-name>. This array is
+    # brought into scope where needed, using 'namespace upvar'. The S
+    # prefix is used to avoid that a slave interp called "Log" smashes
+    # the "Log" variable.
+    #
+    # The array's elements are:
+    #
+    # access_path       : List of paths accessible to the slave.
+    # access_path,norm  : Ditto, in normalized form.
+    # access_path,slave : Ditto, as the path tokens as seen by the slave.
+    # access_path,map   : dict ( token -> path )
+    # access_path,remap : dict ( path -> token )
+    # tm_path_slave     : List of TM root directories, as tokens seen by the slave.
+    # staticsok         : Value of option -statics
+    # nestedok          : Value of option -nested
+    # cleanupHook       : Value of option -deleteHook
+}
+
+::safe::Setup
diff --git a/library/tclIndex b/library/tclIndex
index 16680ea..010616f 100644
--- a/library/tclIndex
+++ b/library/tclIndex
@@ -27,13 +27,10 @@ set auto_index(::tcl::HistRedo) [list source [file join $dir history.tcl]]
 set auto_index(::tcl::HistIndex) [list source [file join $dir history.tcl]]
 set auto_index(::tcl::HistEvent) [list source [file join $dir history.tcl]]
 set auto_index(::tcl::HistChange) [list source [file join $dir history.tcl]]
-set auto_index(tclLdAout) [list source [file join $dir ldAout.tcl]]
-set auto_index(pkg_compareExtension) [list source [file join $dir package.tcl]]
 set auto_index(pkg_mkIndex) [list source [file join $dir package.tcl]]
 set auto_index(tclPkgSetup) [list source [file join $dir package.tcl]]
 set auto_index(tclPkgUnknown) [list source [file join $dir package.tcl]]
 set auto_index(::tcl::MacOSXPkgUnknown) [list source [file join $dir package.tcl]]
-set auto_index(::tcl::MacPkgUnknown) [list source [file join $dir package.tcl]]
 set auto_index(::pkg::create) [list source [file join $dir package.tcl]]
 set auto_index(parray) [list source [file join $dir parray.tcl]]
 set auto_index(::safe::InterpStatics) [list source [file join $dir safe.tcl]]
@@ -76,8 +73,15 @@ set auto_index(::safe::AliasLoad) [list source [file join $dir safe.tcl]]
 set auto_index(::safe::FileInAccessPath) [list source [file join $dir safe.tcl]]
 set auto_index(::safe::Subset) [list source [file join $dir safe.tcl]]
 set auto_index(::safe::AliasSubset) [list source [file join $dir safe.tcl]]
+set auto_index(::safe::AliasEncoding) [list source [file join $dir safe.tcl]]
 set auto_index(tcl_wordBreakAfter) [list source [file join $dir word.tcl]]
 set auto_index(tcl_wordBreakBefore) [list source [file join $dir word.tcl]]
 set auto_index(tcl_endOfWord) [list source [file join $dir word.tcl]]
 set auto_index(tcl_startOfNextWord) [list source [file join $dir word.tcl]]
 set auto_index(tcl_startOfPreviousWord) [list source [file join $dir word.tcl]]
+set auto_index(::tcl::tm::add) [list source [file join $dir tm.tcl]]
+set auto_index(::tcl::tm::remove) [list source [file join $dir tm.tcl]]
+set auto_index(::tcl::tm::list) [list source [file join $dir tm.tcl]]
+set auto_index(::tcl::tm::UnknownHandler) [list source [file join $dir tm.tcl]]
+set auto_index(::tcl::tm::roots) [list source [file join $dir tm.tcl]]
+set auto_index(::tcl::tm::path) [list source [file join $dir tm.tcl]]
diff --git a/library/tcltest/pkgIndex.tcl b/library/tcltest/pkgIndex.tcl
index eb5859e..4b0a9bc 100644
--- a/library/tcltest/pkgIndex.tcl
+++ b/library/tcltest/pkgIndex.tcl
@@ -8,5 +8,5 @@
 # script is sourced, the variable $dir must contain the
 # full path name of this file's directory.
 
-if {![package vsatisfies [package provide Tcl] 8.3]} {return}
-package ifneeded tcltest 2.2.11 [list source [file join $dir tcltest.tcl]]
+if {![package vsatisfies [package provide Tcl] 8.5]} {return}
+package ifneeded tcltest 2.3.5 [list source [file join $dir tcltest.tcl]]
diff --git a/library/tcltest/tcltest.tcl b/library/tcltest/tcltest.tcl
index 5d89748..d6e6487 100644
--- a/library/tcltest/tcltest.tcl
+++ b/library/tcltest/tcltest.tcl
@@ -16,13 +16,13 @@
 # Contributions from Don Porter, NIST, 2002.  (not subject to US copyright)
 # All rights reserved.
 
-package require Tcl 8.3		;# uses [glob -directory]
+package require Tcl 8.5		;# -verbose line uses [info frame]
 namespace eval tcltest {
 
     # When the version number changes, be sure to update the pkgIndex.tcl file,
     # and the install directory in the Makefiles.  When the minor version
     # changes (new feature) be sure to update the man page as well.
-    variable Version 2.2.11
+    variable Version 2.3.5
 
     # Compatibility support for dumb variables defined in tcltest 1
     # Do not use these.  Call [package provide Tcl] and [info patchlevel]
@@ -84,7 +84,7 @@ namespace eval tcltest {
     #     None.
     #
     proc normalizePath {pathVar} {
-	upvar $pathVar path
+	upvar 1 $pathVar path
 	set oldpwd [pwd]
 	catch {cd $path}
 	set path [pwd]
@@ -247,15 +247,15 @@ namespace eval tcltest {
 
     # Kept only for compatibility
     Default constraintsSpecified {} AcceptList
-    trace variable constraintsSpecified r {set ::tcltest::constraintsSpecified \
-		[array names ::tcltest::testConstraints] ;# }
+    trace add variable constraintsSpecified read [namespace code {
+	    set constraintsSpecified [array names testConstraints] ;#}]
 
     # tests that use threads need to know which is the main thread
     Default mainThread 1
     variable mainThread
-    if {[info commands thread::id] != {}} {
+    if {[info commands thread::id] ne {}} {
 	set mainThread [thread::id]
-    } elseif {[info commands testthread] != {}} {
+    } elseif {[info commands testthread] ne {}} {
 	set mainThread [testthread id]
     }
 
@@ -263,7 +263,7 @@ namespace eval tcltest {
     # Tcl tests is the working directory.  Whenever this value changes
     # change to that directory.
     variable workingDirectory
-    trace variable workingDirectory w \
+    trace add variable workingDirectory write \
 	    [namespace code {cd $workingDirectory ;#}]
 
     Default workingDirectory [pwd] AcceptAbsolutePath
@@ -277,7 +277,7 @@ namespace eval tcltest {
 
     # Set the location of the execuatble
     Default tcltest [info nameofexecutable]
-    trace variable tcltest w [namespace code {testConstraint stdio \
+    trace add variable tcltest write [namespace code {testConstraint stdio \
 	    [eval [ConstraintInitializer stdio]] ;#}]
 
     # save the platform information so it can be restored later
@@ -404,11 +404,11 @@ namespace eval tcltest {
 		# already there.
 		set outdir [normalizePath [file dirname \
 			[file join [pwd] $filename]]]
-		if {[string equal $outdir [temporaryDirectory]]} {
+		if {$outdir eq [temporaryDirectory]} {
 		    variable filesExisted
 		    FillFilesExisted
 		    set filename [file tail $filename]
-		    if {[lsearch -exact $filesExisted $filename] == -1} {
+		    if {$filename ni $filesExisted} {
 			lappend filesExisted $filename
 		    }
 		}
@@ -448,11 +448,11 @@ namespace eval tcltest {
 		# already there.
 		set outdir [normalizePath [file dirname \
 			[file join [pwd] $filename]]]
-		if {[string equal $outdir [temporaryDirectory]]} {
+		if {$outdir eq [temporaryDirectory]} {
 		    variable filesExisted
 		    FillFilesExisted
 		    set filename [file tail $filename]
-		    if {[lsearch -exact $filesExisted $filename] == -1} {
+		    if {$filename ni $filesExisted} {
 			lappend filesExisted $filename
 		    }
 		}
@@ -534,7 +534,7 @@ namespace eval tcltest {
 	    }
 	    default {
 		# Exact match trumps ambiguity
-		if {[lsearch -exact $match $option] >= 0} {
+		if {$option in $match} {
 		    return $option
 		}
 		set values [join [lrange $match 0 end-1] ", "]
@@ -549,7 +549,8 @@ namespace eval tcltest {
 	variable OptionControlledVariables
 	foreach varName [concat $OptionControlledVariables Option] {
 	    variable $varName
-	    trace variable $varName r [namespace code {ProcessCmdLineArgs ;#}]
+	    trace add variable $varName read [namespace code {
+		    ProcessCmdLineArgs ;#}]
 	}
     }
 
@@ -557,11 +558,11 @@ namespace eval tcltest {
 	variable OptionControlledVariables
 	foreach varName [concat $OptionControlledVariables Option] {
 	    variable $varName
-	    foreach pair [trace vinfo $varName] {
-		foreach {op cmd} $pair break
-		if {[string equal r $op]
-			&& [string match *ProcessCmdLineArgs* $cmd]} {
-		    trace vdelete $varName $op $cmd
+	    foreach pair [trace info variable $varName] {
+		lassign $pair op cmd
+		if {($op eq "read") &&
+			[string match *ProcessCmdLineArgs* $cmd]} {
+		    trace remove variable $varName $op $cmd
 		}
 	    }
 	}
@@ -604,22 +605,22 @@ namespace eval tcltest {
 	if {[llength $args] > 1} {
 	    RemoveAutoConfigureTraces
 	}
-	set code [catch {eval Configure $args} msg]
+	set code [catch {Configure {*}$args} msg]
 	return -code $code $msg
     }
     
     proc AcceptVerbose { level } {
 	set level [AcceptList $level]
 	if {[llength $level] == 1} {
-	    if {![regexp {^(pass|body|skip|start|error)$} $level]} {
+	    if {![regexp {^(pass|body|skip|start|error|line)$} $level]} {
 		# translate single characters abbreviations to expanded list
-		set level [string map {p pass b body s skip t start e error} \
+		set level [string map {p pass b body s skip t start e error l line} \
 			[split $level {}]]
 	    }
 	}
 	set valid [list]
 	foreach v $level {
-	    if {[regexp {^(pass|body|skip|start|error)$} $v]} {
+	    if {[regexp {^(pass|body|skip|start|error|line)$} $v]} {
 		lappend valid $v
 	    }
 	}
@@ -633,11 +634,12 @@ namespace eval tcltest {
 
     # Default verbosity is to show bodies of failed tests
     Option -verbose {body error} {
-	Takes any combination of the values 'p', 's', 'b', 't' and 'e'.
+	Takes any combination of the values 'p', 's', 'b', 't', 'e' and 'l'.
 	Test suite will display all passed tests if 'p' is specified, all
 	skipped tests if 's' is specified, the bodies of failed tests if
 	'b' is specified, and when tests start if 't' is specified.
-	ErrorInfo is displayed if 'e' is specified.
+	ErrorInfo is displayed if 'e' is specified. Source file line
+	information of failed tests is displayed if 'l' is specified. 
     } AcceptVerbose verbose
 
     # Match and skip patterns default to the empty list, except for
@@ -697,7 +699,7 @@ namespace eval tcltest {
     Option -constraints {} {
 	Do not skip the listed constraints listed in -constraints.
     } AcceptList
-    trace variable Option(-constraints) w \
+    trace add variable Option(-constraints) write \
 	    [namespace code {SetSelectedConstraints ;#}]
 
     # Don't run only the "-constraint" specified tests by default
@@ -706,7 +708,7 @@ namespace eval tcltest {
 	variable testConstraints
 	if {!$Option(-limitconstraints)} {return}
 	foreach c [array names testConstraints] {
-	    if {[lsearch -exact $Option(-constraints) $c] == -1} {
+	    if {$c ni $Option(-constraints)} {
 		testConstraint $c 0
 	    }
 	}
@@ -714,7 +716,7 @@ namespace eval tcltest {
     Option -limitconstraints 0 {
 	whether to run only tests with the constraints
     } AcceptBoolean limitConstraints 
-    trace variable Option(-limitconstraints) w \
+    trace add variable Option(-limitconstraints) write \
 	    [namespace code {ClearUnselectedConstraints ;#}]
 
     # A test application has to know how to load the tested commands
@@ -735,7 +737,7 @@ namespace eval tcltest {
 	}
 	set directory [AcceptDirectory $directory]
 	if {![file writable $directory]} {
-	    if {[string equal [workingDirectory] $directory]} {
+	    if {[workingDirectory] eq $directory} {
 		# Special exception: accept the default value
 		# even if the directory is not writable
 		return $directory
@@ -749,7 +751,7 @@ namespace eval tcltest {
     Option -tmpdir [workingDirectory] {
 	Save temporary files in the specified directory.
     } AcceptTemporaryDirectory temporaryDirectory
-    trace variable Option(-tmpdir) w \
+    trace add variable Option(-tmpdir) write \
 	    [namespace code {normalizePath Option(-tmpdir) ;#}]
 
     # Tests should not rely on the current working directory.
@@ -758,17 +760,17 @@ namespace eval tcltest {
     Option -testdir [workingDirectory] {
 	Search tests in the specified directory.
     } AcceptDirectory testsDirectory
-    trace variable Option(-testdir) w \
+    trace add variable Option(-testdir) write \
 	    [namespace code {normalizePath Option(-testdir) ;#}]
 
     proc AcceptLoadFile { file } {
-	if {[string equal "" $file]} {return $file}
+	if {$file eq {}} {return $file}
 	set file [file join [temporaryDirectory] $file]
 	return [AcceptReadable $file]
     }
     proc ReadLoadScript {args} {
 	variable Option
-	if {[string equal "" $Option(-loadfile)]} {return}
+	if {$Option(-loadfile) eq {}} {return}
 	set tmp [open $Option(-loadfile) r]
 	loadScript [read $tmp]
 	close $tmp
@@ -776,7 +778,7 @@ namespace eval tcltest {
     Option -loadfile {} {
 	Read the script to load the tested commands from the specified file.
     } AcceptLoadFile loadFile
-    trace variable Option(-loadfile) w [namespace code ReadLoadScript]
+    trace add variable Option(-loadfile) write [namespace code ReadLoadScript]
 
     proc AcceptOutFile { file } {
 	if {[string equal stderr $file]} {return $file}
@@ -788,16 +790,39 @@ namespace eval tcltest {
     Option -outfile stdout {
 	Send output from test runs to the specified file.
     } AcceptOutFile outputFile
-    trace variable Option(-outfile) w \
+    trace add variable Option(-outfile) write \
 	    [namespace code {outputChannel $Option(-outfile) ;#}]
 
     # errors go to stderr by default
     Option -errfile stderr {
 	Send errors from test runs to the specified file.
     } AcceptOutFile errorFile
-    trace variable Option(-errfile) w \
+    trace add variable Option(-errfile) write \
 	    [namespace code {errorChannel $Option(-errfile) ;#}]
 
+    proc loadIntoSlaveInterpreter {slave args} {
+	variable Version
+	interp eval $slave [package ifneeded tcltest $Version]
+	interp eval $slave "tcltest::configure {*}{$args}"
+	interp alias $slave ::tcltest::ReportToMaster \
+	    {} ::tcltest::ReportedFromSlave
+    }
+    proc ReportedFromSlave {total passed skipped failed because newfiles} {
+	variable numTests
+	variable skippedBecause
+	variable createdNewFiles
+	incr numTests(Total)   $total
+	incr numTests(Passed)  $passed
+	incr numTests(Skipped) $skipped
+	incr numTests(Failed)  $failed
+	foreach {constraint count} $because {
+	    incr skippedBecause($constraint) $count
+	}
+	foreach {testfile created} $newfiles {
+	    lappend createdNewFiles($testfile) {*}$created
+	}
+	return
+    }
 }
 
 #####################################################################
@@ -853,7 +878,7 @@ proc tcltest::DebugPArray {level arrayvar} {
     variable debug
 
     if {$debug >= $level} {
-	catch {upvar  $arrayvar $arrayvar}
+	catch {upvar 1 $arrayvar $arrayvar}
 	parray $arrayvar
     }
     return
@@ -937,8 +962,7 @@ proc tcltest::testConstraint {constraint {value ""}} {
     if {[catch {expr {$value && $value}} msg]} {
 	return -code error $msg
     }
-    if {[limitConstraints] 
-	    && [lsearch -exact $Option(-constraints) $constraint] == -1} {
+    if {[limitConstraints] && ($constraint ni $Option(-constraints))} {
 	set value 0
     }
     set testConstraints($constraint) $value
@@ -962,11 +986,7 @@ proc tcltest::interpreter { {interp ""} } {
     if {[llength [info level 0]] == 1} {
 	return $tcltest
     }
-    if {[string equal {} $interp]} {
-	set tcltest {}
-    } else {
-	set tcltest $interp
-    }
+    set tcltest $interp
 }
 
 #####################################################################
@@ -1031,7 +1051,7 @@ proc tcltest::PrintError {errorMsg} {
 		[expr {80 - $InitialMsgLen}]]]
 	puts [errorChannel] [string range $errorMsg 0 $beginningIndex]
 
-	while {![string equal end $beginningIndex]} {
+	while {$beginningIndex ne "end"} {
 	    puts -nonewline [errorChannel] \
 		    [string repeat " " $InitialMsgLen]
 	    if {($endingIndex - $beginningIndex)
@@ -1084,7 +1104,7 @@ proc tcltest::PrintError {errorMsg} {
 proc tcltest::SafeFetch {n1 n2 op} {
     variable testConstraints
     DebugPuts 3 "entering SafeFetch $n1 $n2 $op"
-    if {[string equal {} $n2]} {return}
+    if {$n2 eq {}} {return}
     if {![info exists testConstraints($n2)]} {
 	if {[catch {testConstraint $n2 [eval [ConstraintInitializer $n2]]}]} {
 	    testConstraint $n2 0
@@ -1229,9 +1249,8 @@ proc tcltest::DefineConstraintInitializers {} {
     # are running as root on Unix.
 
     ConstraintInitializer root {expr \
-	    {[string equal unix $::tcl_platform(platform)]
-	    && ([string equal root $::tcl_platform(user)]
-		|| [string equal "" $::tcl_platform(user)])}}
+	    {($::tcl_platform(platform) eq "unix") &&
+		    ($::tcl_platform(user) in {root {}})}}
     ConstraintInitializer notRoot {expr {![testConstraint root]}}
 
     # Set nonBlockFiles constraint: 1 means this platform supports
@@ -1239,7 +1258,7 @@ proc tcltest::DefineConstraintInitializers {} {
 
     ConstraintInitializer nonBlockFiles {
 	    set code [expr {[catch {set f [open defs r]}] 
-		    || [catch {fconfigure $f -blocking off}]}]
+		    || [catch {chan configure $f -blocking off}]}]
 	    catch {close $f}
 	    set code
     }
@@ -1265,10 +1284,10 @@ proc tcltest::DefineConstraintInitializers {} {
 
     ConstraintInitializer unixExecs {
 	set code 1
-        if {[string equal macintosh $::tcl_platform(platform)]} {
+        if {$::tcl_platform(platform) eq "macintosh"} {
 	    set code 0
         }
-        if {[string equal windows $::tcl_platform(platform)]} {
+        if {$::tcl_platform(platform) eq "windows"} {
 	    if {[catch {
 	        set file _tcl_test_remove_me.txt
 	        makeFile {hello} $file
@@ -1362,7 +1381,7 @@ proc tcltest::Usage { {option ""} } {
 	set allOpts [concat -help [Configure]]
 	foreach opt $allOpts {
 	    set foo [Usage $opt]
-	    foreach [list x type($opt) usage($opt)] $foo break
+	    lassign $foo x type($opt) usage($opt)
 	    set line($opt) "  $opt $type($opt)  "
 	    set length($opt) [string length $line($opt)]
 	    if {$length($opt) > $max} {set max $length($opt)}
@@ -1386,7 +1405,7 @@ proc tcltest::Usage { {option ""} } {
 	    append msg $u
 	}
 	return $msg\n
-    } elseif {[string equal -help $option]} {
+    } elseif {$option eq "-help"} {
 	return [list -help "" "Display this usage information."]
     } else {
 	set type [lindex [info args $Verify($option)] 0]
@@ -1412,7 +1431,7 @@ proc tcltest::Usage { {option ""} } {
 
 proc tcltest::ProcessFlags {flagArray} {
     # Process -help first
-    if {[lsearch -exact $flagArray {-help}] != -1} {
+    if {"-help" in $flagArray} {
 	PrintUsageInfo
 	exit 1
     }
@@ -1421,14 +1440,14 @@ proc tcltest::ProcessFlags {flagArray} {
 	RemoveAutoConfigureTraces
     } else {
 	set args $flagArray
-	while {[llength $args]>1 && [catch {eval [linsert $args 0 configure]} msg]} {
+	while {[llength $args] > 1 && [catch {configure {*}$args} msg]} {
 
 	    # Something went wrong parsing $args for tcltest options
 	    # Check whether the problem is "unknown option"
 	    if {[regexp {^unknown option (\S+):} $msg -> option]} {
 		# Could be this is an option the Hook knows about
 		set moreOptions [processCmdLineArgsAddFlagsHook]
-		if {[lsearch -exact $moreOptions $option] == -1} {
+		if {$option ni $moreOptions} {
 		    # Nope.  Report the error, including additional options,
 		    # but keep going
 		    if {[llength $moreOptions]} {
@@ -1447,7 +1466,7 @@ proc tcltest::ProcessFlags {flagArray} {
 
 	    # To recover, find that unknown option and remove up to it.
 	    # then retry
-	    while {![string equal [lindex $args 0] $option]} {
+	    while {[lindex $args 0] ne $option} {
 		set args [lrange $args 2 end]
 	    }
 	    set args [lrange $args 2 end]
@@ -1553,7 +1572,7 @@ proc tcltest::Replace::puts {args} {
 	}
 	2 {
 	    # Either -nonewline or channelId has been specified
-	    if {[string equal -nonewline [lindex $args 0]]} {
+	    if {[lindex $args 0] eq "-nonewline"} {
 		append outData [lindex $args end]
 		return
 		# return [Puts -nonewline [lindex $args end]]
@@ -1563,7 +1582,7 @@ proc tcltest::Replace::puts {args} {
 	    }
 	}
 	3 {
-	    if {[string equal -nonewline [lindex $args 0]]} {
+	    if {[lindex $args 0] eq "-nonewline"} {
 		# Both -nonewline and channelId are specified, unless
 		# it's an error.  -nonewline is supposed to be argv[0].
 		set channel [lindex $args 1]
@@ -1573,12 +1592,10 @@ proc tcltest::Replace::puts {args} {
     }
 
     if {[info exists channel]} {
-	if {[string equal $channel [[namespace parent]::outputChannel]]
-		|| [string equal $channel stdout]} {
+	if {$channel in [list [[namespace parent]::outputChannel] stdout]} {
 	    append outData [lindex $args end]$newline
 	    return
-	} elseif {[string equal $channel [[namespace parent]::errorChannel]]
-		|| [string equal $channel stderr]} {
+	} elseif {$channel in [list [[namespace parent]::errorChannel] stderr]} {
 	    append errData [lindex $args end]$newline
 	    return
 	}
@@ -1586,7 +1603,7 @@ proc tcltest::Replace::puts {args} {
 
     # If we haven't returned by now, we don't know how to handle the
     # input.  Let puts handle it.
-    return [eval Puts $args]
+    return [Puts {*}$args]
 }
 
 # tcltest::Eval --
@@ -1615,8 +1632,7 @@ proc tcltest::Eval {script {ignoreOutput 1}} {
 	set outData {}
 	set errData {}
 	rename ::puts [namespace current]::Replace::Puts
-	namespace eval :: \
-		[list namespace import [namespace origin Replace::puts]]
+	namespace eval :: [list namespace import [namespace origin Replace::puts]]
 	namespace import Replace::puts
     }
     set result [uplevel 1 $script]
@@ -1748,7 +1764,7 @@ proc tcltest::SubstArguments {argList} {
             set argList {}
         }
 
-        if {$token != {}} {
+        if {$token ne {}} {
             # If we saw a word with quote before, then there is a
             # multi-word token starting with that word.  In this case,
             # add the text and the current word to this token.
@@ -1855,10 +1871,7 @@ proc tcltest::test {name description args} {
     # Pre-define everything to null except output and errorOutput.  We
     # determine whether or not to trap output based on whether or not
     # these variables (output & errorOutput) are defined.
-    foreach item {constraints setup cleanup body result returnCodes
-	    match} {
-	set $item {}
-    }
+    lassign {} constraints setup cleanup body result returnCodes match
 
     # Set the default match mode
     set match exact
@@ -1870,8 +1883,7 @@ proc tcltest::test {name description args} {
 
     # The old test format can't have a 3rd argument (constraints or
     # script) that starts with '-'.
-    if {[string match -* [lindex $args 0]]
-	    || ([llength $args] <= 1)} {
+    if {[string match -* [lindex $args 0]] || ([llength $args] <= 1)} {
 	if {[llength $args] == 1} {
 	    set list [SubstArguments [lindex $args 0]]
 	    foreach {element value} $list {
@@ -1892,7 +1904,7 @@ proc tcltest::test {name description args} {
 		-match -output -errorOutput -constraints}
 
 	foreach flag [array names testAttributes] {
-	    if {[lsearch -exact $validFlags $flag] == -1} {
+	    if {$flag ni $validFlags} {
 		incr testLevel -1
 		set sorted [lsort $validFlags]
 		set options [join [lrange $sorted 0 end-1] ", "]
@@ -1908,7 +1920,7 @@ proc tcltest::test {name description args} {
 
 	# Check the values supplied for -match
 	variable CustomMatch
-	if {[lsearch [array names CustomMatch] $match] == -1} {
+	if {$match ni [array names CustomMatch]} {
 	    incr testLevel -1
 	    set sorted [lsort [array names CustomMatch]]
 	    set values [join [lrange $sorted 0 end-1] ", "]
@@ -1972,7 +1984,7 @@ proc tcltest::test {name description args} {
 	} else {
 	    set testResult [uplevel 1 [list [namespace origin Eval] $command 1]]
 	}
-	foreach {actualAnswer returnCode} $testResult break
+	lassign $testResult actualAnswer returnCode
 	if {$returnCode == 1} {
 	    set errorInfo(body) $::errorInfo
 	    set errorCode(body) $::errorCode
@@ -2008,11 +2020,11 @@ proc tcltest::test {name description args} {
 	    if {([preserveCore] > 1) && ($coreFailure)} {
 		append coreMsg "\nMoving file to:\
 		    [file join [temporaryDirectory] core-$name]"
-		catch {file rename -force \
+		catch {file rename -force -- \
 		    [file join [workingDirectory] core] \
 		    [file join [temporaryDirectory] core-$name]
 		} msg
-		if {[string length $msg] > 0} {
+		if {$msg ne {}} {
 		    append coreMsg "\nError:\
 			Problem renaming core file: $msg"
 		}
@@ -2022,7 +2034,7 @@ proc tcltest::test {name description args} {
 
     # check if the return code matched the expected return code
     set codeFailure 0
-    if {!$setupFailure && [lsearch -exact $returnCodes $returnCode] == -1} {
+    if {!$setupFailure && ($returnCode ni $returnCodes)} {
 	set codeFailure 1
     }
 
@@ -2089,7 +2101,28 @@ proc tcltest::test {name description args} {
     if {![IsVerbose body]} {
 	set body ""
     }	
-    puts [outputChannel] "\n==== $name\
+    puts [outputChannel] "\n"
+    if {[IsVerbose line]} {
+	if {![catch {set testFrame [info frame -1]}] &&
+		[dict get $testFrame type] eq "source"} {
+	    set testFile [dict get $testFrame file]
+	    set testLine [dict get $testFrame line]
+	} else {
+	    set testFile [file normalize [uplevel 1 {info script}]]
+	    if {[file readable $testFile]} {
+		set testFd [open $testFile r]
+		set testLine [expr {[lsearch -regexp \
+			[split [read $testFd] "\n"] \
+			"^\[ \t\]*test [string map {. \\.} $name] "] + 1}]
+		close $testFd
+	    }
+	}
+	if {[info exists testLine]} {
+	    puts [outputChannel] "$testFile:$testLine: error: test failed:\
+		    $name [string trim $description]"
+	}
+    }	
+    puts [outputChannel] "==== $name\
 	    [string trim $description] FAILED"
     if {[string length $body]} {
 	puts [outputChannel] "==== Contents of test case:"
@@ -2125,7 +2158,7 @@ proc tcltest::test {name description args} {
 	puts [outputChannel] "---- Return code should have been\
 		one of: $returnCodes"
 	if {[IsVerbose error]} {
-	    if {[info exists errorInfo(body)] && ([lsearch $returnCodes 1]<0)} {
+	    if {[info exists errorInfo(body)] && (1 ni $returnCodes)} {
 		puts [outputChannel] "---- errorInfo: $errorInfo(body)"
 		puts [outputChannel] "---- errorCode: $errorCode(body)"
 	    }
@@ -2206,7 +2239,7 @@ proc tcltest::Skipped {name constraints} {
 	}
 	return 1
     }
-    if {[string equal {} $constraints]} {
+    if {$constraints eq {}} {
 	# If we're limited to the listed constraints and there aren't
 	# any listed, then we shouldn't run the test.
 	if {[limitConstraints]} {
@@ -2337,6 +2370,14 @@ proc tcltest::cleanupTests {{calledFromAllFile 0}} {
     FillFilesExisted
     set testFileName [file tail [info script]]
 
+    # Hook to handle reporting to a parent interpreter
+    if {[llength [info commands [namespace current]::ReportToMaster]]} {
+	ReportToMaster $numTests(Total) $numTests(Passed) $numTests(Skipped) \
+	    $numTests(Failed) [array get skippedBecause] \
+	    [array get createdNewFiles]
+	set testSingleFile false
+    }
+
     # Call the cleanup hook
     cleanupTestsHook
 
@@ -2349,7 +2390,7 @@ proc tcltest::cleanupTests {{calledFromAllFile 0}} {
 	foreach file $filesMade {
 	    if {[file exists $file]} {
 		DebugDo 1 {Warn "cleanupTests deleting $file..."}
-		catch {file delete -force $file}
+		catch {file delete -force -- $file}
 	    }
 	}
 	set currentFiles {}
@@ -2359,7 +2400,7 @@ proc tcltest::cleanupTests {{calledFromAllFile 0}} {
 	}
 	set newFiles {}
 	foreach file $currentFiles {
-	    if {[lsearch -exact $filesExisted $file] == -1} {
+	    if {$file ni $filesExisted} {
 		lappend newFiles $file
 	    }
 	}
@@ -2442,8 +2483,7 @@ proc tcltest::cleanupTests {{calledFromAllFile 0}} {
 	# then add current file to failFile list if any tests in this
 	# file failed
 
-	if {$currentFailure \
-		&& ([lsearch -exact $failFiles $testFileName] == -1)} {
+	if {$currentFailure && ($testFileName ni $failFiles)} {
 	    lappend failFiles $testFileName
 	}
 	set currentFailure false
@@ -2503,11 +2543,11 @@ proc tcltest::cleanupTests {{calledFromAllFile 0}} {
 		puts [outputChannel] "produced core file! \
 			Moving file to: \
 			[file join [temporaryDirectory] core-$testFileName]"
-		catch {file rename -force \
+		catch {file rename -force -- \
 			[file join [workingDirectory] core] \
 			[file join [temporaryDirectory] core-$testFileName]
 		} msg
-		if {[string length $msg] > 0} {
+		if {$msg ne {}} {
 		    PrintError "Problem renaming file: $msg"
 		}
 	    } else {
@@ -2552,7 +2592,7 @@ proc tcltest::cleanupTests {{calledFromAllFile 0}} {
 #       None
 
 # a lower case version is needed for compatibility with tcltest 1.0
-proc tcltest::getMatchingFiles args {eval GetMatchingFiles $args}
+proc tcltest::getMatchingFiles args {GetMatchingFiles {*}$args}
 
 proc tcltest::GetMatchingFiles { args } {
     if {[llength $args]} {
@@ -2585,7 +2625,7 @@ proc tcltest::GetMatchingFiles { args } {
 
 	# Add to result list all files in match list and not in skip list
 	foreach file $matchFileList {
-	    if {[lsearch -exact $skipFileList $file] == -1} {
+	    if {$file ni $skipFileList} {
 		lappend matchingFiles $file
 	    }
 	}
@@ -2632,7 +2672,7 @@ proc tcltest::GetMatchingDirectories {rootdir} {
     foreach pattern [matchDirectories] {
 	foreach path [glob -directory $rootdir -types d -nocomplain -- \
 		$pattern] {
-	    if {[lsearch -exact $skipDirs $path] == -1} {
+	    if {$path ni $skipDirs} {
 		set matchDirs [concat $matchDirs [GetMatchingDirectories $path]]
 		if {[file exists [file join $path all.tcl]]} {
 		    lappend matchDirs $path
@@ -2685,7 +2725,7 @@ proc tcltest::runAllTests { {shell ""} } {
 
     # [file system] first available in Tcl 8.4
     if {![catch {file system [testsDirectory]} result]
-	    && ![string equal native [lindex $result 0]]} {
+	    && ([lindex $result 0] ne "native")} {
 	# If we aren't running in the native filesystem, then we must
 	# run the tests in a single process (via 'source'), because
 	# trying to run then via a pipe will fail since the files don't
@@ -2732,10 +2772,10 @@ proc tcltest::runAllTests { {shell ""} } {
 	    # needs to read and process output of children.
 	    set childargv [list]
 	    foreach opt [Configure] {
-		if {[string equal $opt -outfile]} {continue}
+		if {$opt eq "-outfile"} {continue}
 		set value [Configure $opt]
 		# Don't bother passing default configuration options
-		if {[string equal $value $DefaultValue($opt)]} {
+		if {$value eq $DefaultValue($opt)} {
 			continue
 		}
 		lappend childargv $opt $value
@@ -2828,11 +2868,6 @@ proc tcltest::runAllTests { {shell ""} } {
 #     none.
 
 proc tcltest::loadTestedCommands {} {
-    variable l
-    if {[string equal {} [loadScript]]} {
-	return
-    }
-
     return [uplevel 1 [loadScript]]
 }
 
@@ -2875,16 +2910,15 @@ proc tcltest::saveState {} {
 proc tcltest::restoreState {} {
     variable saveState
     foreach p [uplevel 1 {::info procs}] {
-	if {([lsearch [lindex $saveState 0] $p] < 0)
-		&& ![string equal [namespace current]::$p \
-		[uplevel 1 [list ::namespace origin $p]]]} {
+	if {($p ni [lindex $saveState 0]) && ("[namespace current]::$p" ne
+		[uplevel 1 [list ::namespace origin $p]])} {
 
 	    DebugPuts 2 "[lindex [info level 0] 0]: Removing proc $p"
 	    uplevel 1 [list ::catch [list ::rename $p {}]]
 	}
     }
     foreach p [uplevel 1 {::info vars}] {
-	if {[lsearch [lindex $saveState 1] $p] < 0} {
+	if {$p ni [lindex $saveState 1]} {
 	    DebugPuts 2 "[lindex [info level 0] 0]:\
 		    Removing variable $p"
 	    uplevel 1 [list ::catch [list ::unset $p]]
@@ -2945,15 +2979,15 @@ proc tcltest::makeFile {contents name {directory ""}} {
 	     putting ``$contents'' into $fullName"
 
     set fd [open $fullName w]
-    fconfigure $fd -translation lf
-    if {[string equal [string index $contents end] \n]} {
+    chan configure $fd -translation lf
+    if {[string index $contents end] eq "\n"} {
 	puts -nonewline $fd $contents
     } else {
 	puts $fd $contents
     }
     close $fd
 
-    if {[lsearch -exact $filesMade $fullName] == -1} {
+    if {$fullName ni $filesMade} {
 	lappend filesMade $fullName
     }
     return $fullName
@@ -2993,7 +3027,7 @@ proc tcltest::removeFile {name {directory ""}} {
 	    Warn "removeFile removing \"$fullName\":\n  not a file"
 	}
     }
-    return [file delete $fullName]
+    return [file delete -- $fullName]
 }
 
 # tcltest::makeDirectory --
@@ -3023,7 +3057,7 @@ proc tcltest::makeDirectory {name {directory ""}} {
     set fullName [file join $directory $name]
     DebugPuts 3 "[lindex [info level 0] 0]: creating $fullName"
     file mkdir $fullName
-    if {[lsearch -exact $filesMade $fullName] == -1} {
+    if {$fullName ni $filesMade} {
 	lappend filesMade $fullName
     }
     return $fullName
@@ -3064,7 +3098,7 @@ proc tcltest::removeDirectory {name {directory ""}} {
 	    Warn "removeDirectory removing \"$fullName\":\n  not a directory"
 	}
     }
-    return [file delete -force $fullName]
+    return [file delete -force -- $fullName]
 }
 
 # tcltest::viewFile --
@@ -3161,7 +3195,7 @@ proc tcltest::LeakFiles {old} {
     }
     set leak {}
     foreach p $new {
-	if {[lsearch $old $p] < 0} {
+	if {$p ni $old} {
 	    lappend leak $p
 	}
     }
@@ -3232,7 +3266,7 @@ proc tcltest::RestoreLocale {} {
 #
 
 proc tcltest::threadReap {} {
-    if {[info commands testthread] != {}} {
+    if {[info commands testthread] ne {}} {
 
 	# testthread built into tcltest
 
@@ -3252,7 +3286,7 @@ proc tcltest::threadReap {} {
 	}
 	testthread errorproc ThreadError
 	return [llength [testthread names]]
-    } elseif {[info commands thread::id] != {}} {
+    } elseif {[info commands thread::id] ne {}} {
 	
 	# Thread extension
 
@@ -3284,15 +3318,15 @@ namespace eval tcltest {
     # Set up the constraints in the testConstraints array to be lazily
     # initialized by a registered initializer, or by "false" if no
     # initializer is registered.
-    trace variable testConstraints r [namespace code SafeFetch]
+    trace add variable testConstraints read [namespace code SafeFetch]
 
     # Only initialize constraints at package load time if an
     # [initConstraintsHook] has been pre-defined.  This is only
     # for compatibility support.  The modern way to add a custom
     # test constraint is to just call the [testConstraint] command
     # straight away, without all this "hook" nonsense.
-    if {[string equal [namespace current] \
-	    [namespace qualifiers [namespace which initConstraintsHook]]]} {
+    if {[namespace current] eq
+	    [namespace qualifiers [namespace which initConstraintsHook]]} {
 	InitConstraints
     } else {
 	proc initConstraintsHook {} {}
@@ -3318,7 +3352,7 @@ namespace eval tcltest {
 		    -option value ?-option value ...?"
 	    return
 	}
-	if {[catch {eval [linsert $options 0 Configure]} msg]} {
+	if {[catch {Configure {*}$options} msg]} {
 	    Warn "invalid TCLTEST_OPTIONS: \"$options\":\n  $msg"
 	    return
 	}
@@ -3329,15 +3363,15 @@ namespace eval tcltest {
 
     proc LoadTimeCmdLineArgParsingRequired {} {
 	set required false
-	if {[info exists ::argv] && [lsearch -exact $::argv -help] != -1} {
+	if {[info exists ::argv] && ("-help" in $::argv)} {
 	    # The command line asks for -help, so give it (and exit)
 	    # right now.  ([configure] does not process -help)
 	    set required true
 	}
 	foreach hook { PrintUsageInfoHook processCmdLineArgsHook
 			processCmdLineArgsAddFlagsHook } {
-	    if {[string equal [namespace current] [namespace qualifiers \
-		    [namespace which $hook]]]} {
+	    if {[namespace current] eq
+		    [namespace qualifiers [namespace which $hook]]} {
 		set required true
 	    } else {
 		proc $hook args {}
diff --git a/library/tm.tcl b/library/tm.tcl
new file mode 100644
index 0000000..baa268d
--- /dev/null
+++ b/library/tm.tcl
@@ -0,0 +1,378 @@
+# -*- tcl -*-
+#
+# Searching for Tcl Modules. Defines a procedure, declares it as the
+# primary command for finding packages, however also uses the former
+# 'package unknown' command as a fallback.
+#
+# Locates all possible packages in a directory via a less restricted
+# glob. The targeted directory is derived from the name of the
+# requested package. I.e. the TM scan will look only at directories
+# which can contain the requested package. It will register all
+# packages it found in the directory so that future requests have a
+# higher chance of being fulfilled by the ifneeded database without
+# having to come to us again.
+#
+# We do not remember where we have been and simply rescan targeted
+# directories when invoked again. The reasoning is this:
+#
+# - The only way we get back to the same directory is if someone is
+#   trying to [package require] something that wasn't there on the
+#   first scan.
+#
+#   Either
+#   1) It is there now:  If we rescan, you get it; if not you don't.
+#
+#      This covers the possibility that the application asked for a
+#      package late, and the package was actually added to the
+#      installation after the application was started. It shoukld
+#      still be able to find it.
+#
+#   2) It still is not there: Either way, you don't get it, but the
+#      rescan takes time. This is however an error case and we dont't
+#      care that much about it
+#
+#   3) It was there the first time; but for some reason a "package
+#      forget" has been run, and "package" doesn't know about it
+#      anymore.
+#
+#      This can be an indication that the application wishes to reload
+#      some functionality. And should work as well.
+#
+# Note that this also strikes a balance between doing a glob targeting
+# a single package, and thus most likely requiring multiple globs of
+# the same directory when the application is asking for many packages,
+# and trying to glob for _everything_ in all subdirectories when
+# looking for a package, which comes with a heavy startup cost.
+#
+# We scan for regular packages only if no satisfying module was found.
+
+namespace eval ::tcl::tm {
+    # Default paths. None yet.
+
+    variable paths {}
+
+    # The regex pattern a file name has to match to make it a Tcl Module.
+
+    set pkgpattern {^([_[:alpha:]][:_[:alnum:]]*)-([[:digit:]].*)[.]tm$}
+
+    # Export the public API
+
+    namespace export path
+    namespace ensemble create -command path -subcommands {add remove list}
+}
+
+# ::tcl::tm::path implementations --
+#
+#	Public API to the module path. See specification.
+#
+# Arguments
+#	cmd -	The subcommand to execute
+#	args -	The paths to add/remove. Must not appear querying the
+#		path with 'list'.
+#
+# Results
+#	No result for subcommands 'add' and 'remove'. A list of paths
+#	for 'list'.
+#
+# Sideeffects
+#	The subcommands 'add' and 'remove' manipulate the list of
+#	paths to search for Tcl Modules. The subcommand 'list' has no
+#	sideeffects.
+
+proc ::tcl::tm::add {path args} {
+    # PART OF THE ::tcl::tm::path ENSEMBLE
+    #
+    # The path is added at the head to the list of module paths.
+    #
+    # The command enforces the restriction that no path may be an
+    # ancestor directory of any other path on the list. If the new
+    # path violates this restriction an error wil be raised.
+    #
+    # If the path is already present as is no error will be raised and
+    # no action will be taken.
+
+    variable paths
+
+    # We use a copy of the path as source during validation, and
+    # extend it as well. Because we not only have to detect if the new
+    # paths are bogus with respect to the existing paths, but also
+    # between themselves. Otherwise we can still add bogus paths, by
+    # specifying them in a single call. This makes the use of the new
+    # paths simpler as well, a trivial assignment of the collected
+    # paths to the official state var.
+
+    set newpaths $paths
+    foreach p [linsert $args 0 $path] {
+	if {$p in $newpaths} {
+	    # Ignore a path already on the list.
+	    continue
+	}
+
+	# Search for paths which are subdirectories of the new one. If
+	# there are any then the new path violates the restriction
+	# about ancestors.
+
+	set pos [lsearch -glob $newpaths ${p}/*]
+	# Cannot use "in", we need the position for the message.
+	if {$pos >= 0} {
+	    return -code error \
+		"$p is ancestor of existing module path [lindex $newpaths $pos]."
+	}
+
+	# Now look for existing paths which are ancestors of the new
+	# one. This reverse question forces us to loop over the
+	# existing paths, as each element is the pattern, not the new
+	# path :(
+
+	foreach ep $newpaths {
+	    if {[string match ${ep}/* $p]} {
+		return -code error \
+		    "$p is subdirectory of existing module path $ep."
+	    }
+	}
+
+	set newpaths [linsert $newpaths 0 $p]
+    }
+
+    # The validation of the input is complete and successful, and
+    # everything in newpaths is either an old path, or added. We can
+    # now extend the official list of paths, a simple assignment is
+    # sufficient.
+
+    set paths $newpaths
+    return
+}
+
+proc ::tcl::tm::remove {path args} {
+    # PART OF THE ::tcl::tm::path ENSEMBLE
+    #
+    # Removes the path from the list of module paths. The command is
+    # silently ignored if the path is not on the list.
+
+    variable paths
+
+    foreach p [linsert $args 0 $path] {
+	set pos [lsearch -exact $paths $p]
+	if {$pos >= 0} {
+	    set paths [lreplace $paths $pos $pos]
+	}
+    }
+}
+
+proc ::tcl::tm::list {} {
+    # PART OF THE ::tcl::tm::path ENSEMBLE
+
+    variable paths
+    return  $paths
+}
+
+# ::tcl::tm::UnknownHandler --
+#
+#	Unknown handler for Tcl Modules, i.e. packages in module form.
+#
+# Arguments
+#	original	- Original [package unknown] procedure.
+#	name		- Name of desired package.
+#	version		- Version of desired package. Can be the
+#			  empty string.
+#	exact		- Either -exact or ommitted.
+#
+#	Name, version, and exact are used to determine
+#	satisfaction. The original is called iff no satisfaction was
+#	achieved. The name is also used to compute the directory to
+#	target in the search.
+#
+# Results
+#	None.
+#
+# Sideeffects
+#	May populate the package ifneeded database with additional
+#	provide scripts.
+
+proc ::tcl::tm::UnknownHandler {original name args} {
+    # Import the list of paths to search for packages in module form.
+    # Import the pattern used to check package names in detail.  
+
+    variable paths
+    variable pkgpattern
+
+    # Without paths to search we can do nothing. (Except falling back
+    # to the regular search).
+
+    if {[llength $paths]} {
+	set pkgpath [string map {:: /} $name]
+	set pkgroot [file dirname $pkgpath]
+	if {$pkgroot eq "."} {
+	    set pkgroot ""
+	}
+
+	# We don't remember a copy of the paths while looping. Tcl
+	# Modules are unable to change the list while we are searching
+	# for them. This also simplifies the loop, as we cannot get
+	# additional directories while iterating over the list. A
+	# simple foreach is sufficient.
+
+	set satisfied 0
+	foreach path $paths {
+	    if {![interp issafe] && ![file exists $path]} {
+		continue
+	    }
+	    set currentsearchpath [file join $path $pkgroot]
+	    if {![interp issafe] && ![file exists $currentsearchpath]} {
+		continue
+	    }
+	    set strip [llength [file split $path]]
+
+	    # We can't use glob in safe interps, so enclose the following
+	    # in a catch statement, where we get the module files out
+	    # of the subdirectories. In other words, Tcl Modules are
+	    # not-functional in such an interpreter. This is the same
+	    # as for the command "tclPkgUnknown", i.e. the search for
+	    # regular packages.
+
+	    catch {
+		# We always look for _all_ possible modules in the current
+		# path, to get the max result out of the glob.
+
+		foreach file [glob -nocomplain -directory $currentsearchpath *.tm] {
+		    set pkgfilename [join [lrange [file split $file] $strip end] ::]
+
+		    if {![regexp -- $pkgpattern $pkgfilename --> pkgname pkgversion]} {
+			# Ignore everything not matching our pattern
+			# for package names.
+			continue
+		    }
+		    if {[catch {package vcompare $pkgversion 0}]} {
+			# Ignore everything where the version part is
+			# not acceptable to "package vcompare".
+			continue
+		    }
+
+		    # We have found a candidate, generate a "provide
+		    # script" for it, and remember it.  Note that we
+		    # are using ::list to do this; locally [list]
+		    # means something else without the namespace
+		    # specifier.
+
+		    # NOTE. When making changes to the format of the
+		    # provide command generated below CHECK that the
+		    # 'LOCATE' procedure in core file
+		    # 'platform/shell.tcl' still understands it, or,
+		    # if not, update its implementation appropriately.
+		    #
+		    # Right now LOCATE's implementation assumes that
+		    # the path of the package file is the last element
+		    # in the list.
+
+		    package ifneeded $pkgname $pkgversion \
+			"[::list package provide $pkgname $pkgversion];[::list source -encoding utf-8 $file]"
+
+		    # We abort in this unknown handler only if we got
+		    # a satisfying candidate for the requested
+		    # package. Otherwise we still have to fallback to
+		    # the regular package search to complete the
+		    # processing.
+
+		    if {($pkgname eq $name)
+			    && [package vsatisfies $pkgversion {*}$args]} {
+			set satisfied 1
+			# We do not abort the loop, and keep adding
+			# provide scripts for every candidate in the
+			# directory, just remember to not fall back to
+			# the regular search anymore.
+		    }
+		}
+	    }
+	}
+
+	if {$satisfied} {
+	    return
+	}
+    }
+
+    # Fallback to previous command, if existing.  See comment above
+    # about ::list...
+
+    if {[llength $original]} {
+	uplevel 1 $original [::linsert $args 0 $name]
+    }
+}
+
+# ::tcl::tm::Defaults --
+#
+#	Determines the default search paths.
+#
+# Arguments
+#	None
+#
+# Results
+#	None.
+#
+# Sideeffects
+#	May add paths to the list of defaults.
+
+proc ::tcl::tm::Defaults {} {
+    global env tcl_platform
+
+    lassign [split [info tclversion] .] major minor
+    set exe [file normalize [info nameofexecutable]]
+
+    # Note that we're using [::list], not [list] because [list] means
+    # something other than [::list] in this namespace.
+    roots [::list \
+	    [file dirname [info library]] \
+	    [file join [file dirname [file dirname $exe]] lib] \
+	    ]
+
+    if {$tcl_platform(platform) eq "windows"} {
+	set sep ";"
+    } else {
+	set sep ":"
+    }
+    for {set n $minor} {$n >= 0} {incr n -1} {
+	foreach ev [::list \
+			TCL${major}.${n}_TM_PATH \
+			TCL${major}_${n}_TM_PATH \
+        ] {
+	    if {![info exists env($ev)]} continue
+	    foreach p [split $env($ev) $sep] {
+		path add $p
+	    }
+	}
+    }
+    return
+}
+
+# ::tcl::tm::roots --
+#
+#	Public API to the module path. See specification.
+#
+# Arguments
+#	paths -	List of 'root' paths to derive search paths from.
+#
+# Results
+#	No result.
+#
+# Sideeffects
+#	Calls 'path add' to paths to the list of module search paths.
+
+proc ::tcl::tm::roots {paths} {
+    lassign [split [package present Tcl] .] major minor
+    foreach pa $paths {
+	set p [file join $pa tcl$major]
+	for {set n $minor} {$n >= 0} {incr n -1} {
+	    set px [file join $p ${major}.${n}]
+	    if {![interp issafe]} { set px [file normalize $px] }
+	    path add $px
+	}
+	set px [file join $p site-tcl]
+	if {![interp issafe]} { set px [file normalize $px] }
+	path add $px
+    }
+    return
+}
+
+# Initialization. Set up the default paths, then insert the new
+# handler into the chain.
+
+if {![interp issafe]} { ::tcl::tm::Defaults }
diff --git a/library/tzdata/Africa/Abidjan b/library/tzdata/Africa/Abidjan
new file mode 100644
index 0000000..4b4f5b2
--- /dev/null
+++ b/library/tzdata/Africa/Abidjan
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Abidjan) {
+    {-9223372036854775808 -968 0 LMT}
+    {-1830383032 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Accra b/library/tzdata/Africa/Accra
new file mode 100644
index 0000000..faf58fb
--- /dev/null
+++ b/library/tzdata/Africa/Accra
@@ -0,0 +1,20 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Accra) {
+    {-9223372036854775808 -52 0 LMT}
+    {-1640995148 0 0 GMT}
+    {-1051920000 1200 1 GHST}
+    {-1041466800 0 0 GMT}
+    {-1020384000 1200 1 GHST}
+    {-1009930800 0 0 GMT}
+    {-988848000 1200 1 GHST}
+    {-978394800 0 0 GMT}
+    {-957312000 1200 1 GHST}
+    {-946858800 0 0 GMT}
+    {-925689600 1200 1 GHST}
+    {-915236400 0 0 GMT}
+    {-894153600 1200 1 GHST}
+    {-883700400 0 0 GMT}
+    {-862617600 1200 1 GHST}
+    {-852164400 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Addis_Ababa b/library/tzdata/Africa/Addis_Ababa
new file mode 100644
index 0000000..4b92483
--- /dev/null
+++ b/library/tzdata/Africa/Addis_Ababa
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Addis_Ababa) {
+    {-9223372036854775808 9288 0 LMT}
+    {-3155682888 9320 0 ADMT}
+    {-1062210920 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Algiers b/library/tzdata/Africa/Algiers
new file mode 100644
index 0000000..fe4de22
--- /dev/null
+++ b/library/tzdata/Africa/Algiers
@@ -0,0 +1,39 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Algiers) {
+    {-9223372036854775808 732 0 LMT}
+    {-2486679072 561 0 PMT}
+    {-1855958961 0 0 WET}
+    {-1689814800 3600 1 WEST}
+    {-1680397200 0 0 WET}
+    {-1665363600 3600 1 WEST}
+    {-1648342800 0 0 WET}
+    {-1635123600 3600 1 WEST}
+    {-1616893200 0 0 WET}
+    {-1604278800 3600 1 WEST}
+    {-1585443600 0 0 WET}
+    {-1574038800 3600 1 WEST}
+    {-1552266000 0 0 WET}
+    {-1539997200 3600 1 WEST}
+    {-1531443600 0 0 WET}
+    {-956365200 3600 1 WEST}
+    {-950486400 0 0 WET}
+    {-942012000 3600 0 CET}
+    {-812502000 7200 1 CEST}
+    {-796262400 3600 0 CET}
+    {-781052400 7200 1 CEST}
+    {-766630800 3600 0 CET}
+    {-733280400 0 0 WET}
+    {-439430400 3600 0 CET}
+    {-212029200 0 0 WET}
+    {41468400 3600 1 WEST}
+    {54774000 0 0 WET}
+    {231724800 3600 1 WEST}
+    {246240000 3600 0 CET}
+    {259545600 7200 1 CEST}
+    {275274000 3600 0 CET}
+    {309740400 0 0 WET}
+    {325468800 3600 1 WEST}
+    {341802000 0 0 WET}
+    {357523200 3600 0 CET}
+}
diff --git a/library/tzdata/Africa/Asmara b/library/tzdata/Africa/Asmara
new file mode 100755
index 0000000..1f0f13e
--- /dev/null
+++ b/library/tzdata/Africa/Asmara
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Asmara) {
+    {-9223372036854775808 9332 0 LMT}
+    {-3155682932 9332 0 AMT}
+    {-2524530932 9320 0 ADMT}
+    {-1062210920 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Asmera b/library/tzdata/Africa/Asmera
new file mode 100644
index 0000000..931c36d
--- /dev/null
+++ b/library/tzdata/Africa/Asmera
@@ -0,0 +1,5 @@
+# created by tools/tclZIC.tcl - do not edit
+if {![info exists TZData(Africa/Asmara)]} {
+    LoadTimeZoneFile Africa/Asmara
+}
+set TZData(:Africa/Asmera) $TZData(:Africa/Asmara)
diff --git a/library/tzdata/Africa/Bamako b/library/tzdata/Africa/Bamako
new file mode 100644
index 0000000..7ed62e0
--- /dev/null
+++ b/library/tzdata/Africa/Bamako
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Bamako) {
+    {-9223372036854775808 -1920 0 LMT}
+    {-1830382080 0 0 GMT}
+    {-1131235200 -3600 0 WAT}
+    {-300841200 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Bangui b/library/tzdata/Africa/Bangui
new file mode 100644
index 0000000..94f5058
--- /dev/null
+++ b/library/tzdata/Africa/Bangui
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Bangui) {
+    {-9223372036854775808 4460 0 LMT}
+    {-1830388460 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Banjul b/library/tzdata/Africa/Banjul
new file mode 100644
index 0000000..a7f0168
--- /dev/null
+++ b/library/tzdata/Africa/Banjul
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Banjul) {
+    {-9223372036854775808 -3996 0 LMT}
+    {-1830380004 -3996 0 BMT}
+    {-1104533604 -3600 0 WAT}
+    {-189385200 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Bissau b/library/tzdata/Africa/Bissau
new file mode 100644
index 0000000..d51cb9f
--- /dev/null
+++ b/library/tzdata/Africa/Bissau
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Bissau) {
+    {-9223372036854775808 -3740 0 LMT}
+    {-1849388260 -3600 0 WAT}
+    {157770000 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Blantyre b/library/tzdata/Africa/Blantyre
new file mode 100644
index 0000000..17b58f4
--- /dev/null
+++ b/library/tzdata/Africa/Blantyre
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Blantyre) {
+    {-9223372036854775808 8400 0 LMT}
+    {-2109291600 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Brazzaville b/library/tzdata/Africa/Brazzaville
new file mode 100644
index 0000000..b4e0923
--- /dev/null
+++ b/library/tzdata/Africa/Brazzaville
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Brazzaville) {
+    {-9223372036854775808 3668 0 LMT}
+    {-1830387668 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Bujumbura b/library/tzdata/Africa/Bujumbura
new file mode 100644
index 0000000..c26d053
--- /dev/null
+++ b/library/tzdata/Africa/Bujumbura
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Bujumbura) {
+    {-9223372036854775808 7048 0 LMT}
+    {-2524528648 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Cairo b/library/tzdata/Africa/Cairo
new file mode 100644
index 0000000..165d8c4
--- /dev/null
+++ b/library/tzdata/Africa/Cairo
@@ -0,0 +1,128 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Cairo) {
+    {-9223372036854775808 7500 0 LMT}
+    {-2185409100 7200 0 EET}
+    {-929844000 10800 1 EEST}
+    {-923108400 7200 0 EET}
+    {-906170400 10800 1 EEST}
+    {-892868400 7200 0 EET}
+    {-875844000 10800 1 EEST}
+    {-857790000 7200 0 EET}
+    {-844308000 10800 1 EEST}
+    {-825822000 7200 0 EET}
+    {-812685600 10800 1 EEST}
+    {-794199600 7200 0 EET}
+    {-779853600 10800 1 EEST}
+    {-762663600 7200 0 EET}
+    {-399088800 10800 1 EEST}
+    {-386650800 7200 0 EET}
+    {-368330400 10800 1 EEST}
+    {-355114800 7200 0 EET}
+    {-336790800 10800 1 EEST}
+    {-323654400 7200 0 EET}
+    {-305168400 10800 1 EEST}
+    {-292032000 7200 0 EET}
+    {-273632400 10800 1 EEST}
+    {-260496000 7200 0 EET}
+    {-242096400 10800 1 EEST}
+    {-228960000 7200 0 EET}
+    {-210560400 10800 1 EEST}
+    {-197424000 7200 0 EET}
+    {-178938000 10800 1 EEST}
+    {-165801600 7200 0 EET}
+    {-147402000 10800 1 EEST}
+    {-134265600 7200 0 EET}
+    {-115866000 10800 1 EEST}
+    {-102643200 7200 0 EET}
+    {-84330000 10800 1 EEST}
+    {-71107200 7200 0 EET}
+    {-52707600 10800 1 EEST}
+    {-39484800 7200 0 EET}
+    {-21171600 10800 1 EEST}
+    {-7948800 7200 0 EET}
+    {10364400 10800 1 EEST}
+    {23587200 7200 0 EET}
+    {41900400 10800 1 EEST}
+    {55123200 7200 0 EET}
+    {73522800 10800 1 EEST}
+    {86745600 7200 0 EET}
+    {105058800 10800 1 EEST}
+    {118281600 7200 0 EET}
+    {136594800 10800 1 EEST}
+    {149817600 7200 0 EET}
+    {168130800 10800 1 EEST}
+    {181353600 7200 0 EET}
+    {199753200 10800 1 EEST}
+    {212976000 7200 0 EET}
+    {231289200 10800 1 EEST}
+    {244512000 7200 0 EET}
+    {262825200 10800 1 EEST}
+    {276048000 7200 0 EET}
+    {294361200 10800 1 EEST}
+    {307584000 7200 0 EET}
+    {325983600 10800 1 EEST}
+    {339206400 7200 0 EET}
+    {357519600 10800 1 EEST}
+    {370742400 7200 0 EET}
+    {396399600 10800 1 EEST}
+    {402278400 7200 0 EET}
+    {426812400 10800 1 EEST}
+    {433814400 7200 0 EET}
+    {452214000 10800 1 EEST}
+    {465436800 7200 0 EET}
+    {483750000 10800 1 EEST}
+    {496972800 7200 0 EET}
+    {515286000 10800 1 EEST}
+    {528508800 7200 0 EET}
+    {546822000 10800 1 EEST}
+    {560044800 7200 0 EET}
+    {578444400 10800 1 EEST}
+    {591667200 7200 0 EET}
+    {610412400 10800 1 EEST}
+    {623203200 7200 0 EET}
+    {641516400 10800 1 EEST}
+    {654739200 7200 0 EET}
+    {673052400 10800 1 EEST}
+    {686275200 7200 0 EET}
+    {704674800 10800 1 EEST}
+    {717897600 7200 0 EET}
+    {736210800 10800 1 EEST}
+    {749433600 7200 0 EET}
+    {767746800 10800 1 EEST}
+    {780969600 7200 0 EET}
+    {799020000 10800 1 EEST}
+    {812322000 7200 0 EET}
+    {830469600 10800 1 EEST}
+    {843771600 7200 0 EET}
+    {861919200 10800 1 EEST}
+    {875221200 7200 0 EET}
+    {893368800 10800 1 EEST}
+    {906670800 7200 0 EET}
+    {925423200 10800 1 EEST}
+    {938725200 7200 0 EET}
+    {956872800 10800 1 EEST}
+    {970174800 7200 0 EET}
+    {988322400 10800 1 EEST}
+    {1001624400 7200 0 EET}
+    {1019772000 10800 1 EEST}
+    {1033074000 7200 0 EET}
+    {1051221600 10800 1 EEST}
+    {1064523600 7200 0 EET}
+    {1083276000 10800 1 EEST}
+    {1096578000 7200 0 EET}
+    {1114725600 10800 1 EEST}
+    {1128027600 7200 0 EET}
+    {1146175200 10800 1 EEST}
+    {1158872400 7200 0 EET}
+    {1177624800 10800 1 EEST}
+    {1189112400 7200 0 EET}
+    {1209074400 10800 1 EEST}
+    {1219957200 7200 0 EET}
+    {1240524000 10800 1 EEST}
+    {1250802000 7200 0 EET}
+    {1272578400 10800 1 EEST}
+    {1281474000 7200 0 EET}
+    {1284069600 10800 1 EEST}
+    {1285880400 7200 0 EET}
+}
diff --git a/library/tzdata/Africa/Casablanca b/library/tzdata/Africa/Casablanca
new file mode 100644
index 0000000..41f8742
--- /dev/null
+++ b/library/tzdata/Africa/Casablanca
@@ -0,0 +1,210 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Casablanca) {
+    {-9223372036854775808 -1820 0 LMT}
+    {-1773012580 0 0 WET}
+    {-956361600 3600 1 WEST}
+    {-950490000 0 0 WET}
+    {-942019200 3600 1 WEST}
+    {-761187600 0 0 WET}
+    {-617241600 3600 1 WEST}
+    {-605149200 0 0 WET}
+    {-81432000 3600 1 WEST}
+    {-71110800 0 0 WET}
+    {141264000 3600 1 WEST}
+    {147222000 0 0 WET}
+    {199756800 3600 1 WEST}
+    {207702000 0 0 WET}
+    {231292800 3600 1 WEST}
+    {244249200 0 0 WET}
+    {265507200 3600 1 WEST}
+    {271033200 0 0 WET}
+    {448243200 3600 0 CET}
+    {504918000 0 0 WET}
+    {1212278400 3600 1 WEST}
+    {1220223600 0 0 WET}
+    {1243814400 3600 1 WEST}
+    {1250809200 0 0 WET}
+    {1272758400 3600 1 WEST}
+    {1281222000 0 0 WET}
+    {1301788800 3600 1 WEST}
+    {1312066800 0 0 WET}
+    {1335664800 3600 1 WEST}
+    {1342749600 0 0 WET}
+    {1345428000 3600 1 WEST}
+    {1348970400 0 0 WET}
+    {1367114400 3600 1 WEST}
+    {1380420000 0 0 WET}
+    {1398564000 3600 1 WEST}
+    {1411869600 0 0 WET}
+    {1430013600 3600 1 WEST}
+    {1443319200 0 0 WET}
+    {1461463200 3600 1 WEST}
+    {1474768800 0 0 WET}
+    {1493517600 3600 1 WEST}
+    {1506218400 0 0 WET}
+    {1524967200 3600 1 WEST}
+    {1538272800 0 0 WET}
+    {1556416800 3600 1 WEST}
+    {1569722400 0 0 WET}
+    {1587866400 3600 1 WEST}
+    {1601172000 0 0 WET}
+    {1619316000 3600 1 WEST}
+    {1632621600 0 0 WET}
+    {1650765600 3600 1 WEST}
+    {1664071200 0 0 WET}
+    {1682820000 3600 1 WEST}
+    {1695520800 0 0 WET}
+    {1714269600 3600 1 WEST}
+    {1727575200 0 0 WET}
+    {1745719200 3600 1 WEST}
+    {1759024800 0 0 WET}
+    {1777168800 3600 1 WEST}
+    {1790474400 0 0 WET}
+    {1808618400 3600 1 WEST}
+    {1821924000 0 0 WET}
+    {1840672800 3600 1 WEST}
+    {1853373600 0 0 WET}
+    {1872122400 3600 1 WEST}
+    {1885428000 0 0 WET}
+    {1903572000 3600 1 WEST}
+    {1916877600 0 0 WET}
+    {1935021600 3600 1 WEST}
+    {1948327200 0 0 WET}
+    {1966471200 3600 1 WEST}
+    {1979776800 0 0 WET}
+    {1997920800 3600 1 WEST}
+    {2011226400 0 0 WET}
+    {2029975200 3600 1 WEST}
+    {2042676000 0 0 WET}
+    {2061424800 3600 1 WEST}
+    {2074730400 0 0 WET}
+    {2092874400 3600 1 WEST}
+    {2106180000 0 0 WET}
+    {2124324000 3600 1 WEST}
+    {2137629600 0 0 WET}
+    {2155773600 3600 1 WEST}
+    {2169079200 0 0 WET}
+    {2187223200 3600 1 WEST}
+    {2200528800 0 0 WET}
+    {2219277600 3600 1 WEST}
+    {2232583200 0 0 WET}
+    {2250727200 3600 1 WEST}
+    {2264032800 0 0 WET}
+    {2282176800 3600 1 WEST}
+    {2295482400 0 0 WET}
+    {2313626400 3600 1 WEST}
+    {2326932000 0 0 WET}
+    {2345076000 3600 1 WEST}
+    {2358381600 0 0 WET}
+    {2377130400 3600 1 WEST}
+    {2389831200 0 0 WET}
+    {2408580000 3600 1 WEST}
+    {2421885600 0 0 WET}
+    {2440029600 3600 1 WEST}
+    {2453335200 0 0 WET}
+    {2471479200 3600 1 WEST}
+    {2484784800 0 0 WET}
+    {2502928800 3600 1 WEST}
+    {2516234400 0 0 WET}
+    {2534378400 3600 1 WEST}
+    {2547684000 0 0 WET}
+    {2566432800 3600 1 WEST}
+    {2579133600 0 0 WET}
+    {2597882400 3600 1 WEST}
+    {2611188000 0 0 WET}
+    {2629332000 3600 1 WEST}
+    {2642637600 0 0 WET}
+    {2660781600 3600 1 WEST}
+    {2674087200 0 0 WET}
+    {2692231200 3600 1 WEST}
+    {2705536800 0 0 WET}
+    {2724285600 3600 1 WEST}
+    {2736986400 0 0 WET}
+    {2755735200 3600 1 WEST}
+    {2769040800 0 0 WET}
+    {2787184800 3600 1 WEST}
+    {2800490400 0 0 WET}
+    {2818634400 3600 1 WEST}
+    {2831940000 0 0 WET}
+    {2850084000 3600 1 WEST}
+    {2863389600 0 0 WET}
+    {2881533600 3600 1 WEST}
+    {2894839200 0 0 WET}
+    {2913588000 3600 1 WEST}
+    {2926288800 0 0 WET}
+    {2945037600 3600 1 WEST}
+    {2958343200 0 0 WET}
+    {2976487200 3600 1 WEST}
+    {2989792800 0 0 WET}
+    {3007936800 3600 1 WEST}
+    {3021242400 0 0 WET}
+    {3039386400 3600 1 WEST}
+    {3052692000 0 0 WET}
+    {3070836000 3600 1 WEST}
+    {3084141600 0 0 WET}
+    {3102890400 3600 1 WEST}
+    {3116196000 0 0 WET}
+    {3134340000 3600 1 WEST}
+    {3147645600 0 0 WET}
+    {3165789600 3600 1 WEST}
+    {3179095200 0 0 WET}
+    {3197239200 3600 1 WEST}
+    {3210544800 0 0 WET}
+    {3228688800 3600 1 WEST}
+    {3241994400 0 0 WET}
+    {3260743200 3600 1 WEST}
+    {3273444000 0 0 WET}
+    {3292192800 3600 1 WEST}
+    {3305498400 0 0 WET}
+    {3323642400 3600 1 WEST}
+    {3336948000 0 0 WET}
+    {3355092000 3600 1 WEST}
+    {3368397600 0 0 WET}
+    {3386541600 3600 1 WEST}
+    {3399847200 0 0 WET}
+    {3417991200 3600 1 WEST}
+    {3431296800 0 0 WET}
+    {3450045600 3600 1 WEST}
+    {3462746400 0 0 WET}
+    {3481495200 3600 1 WEST}
+    {3494800800 0 0 WET}
+    {3512944800 3600 1 WEST}
+    {3526250400 0 0 WET}
+    {3544394400 3600 1 WEST}
+    {3557700000 0 0 WET}
+    {3575844000 3600 1 WEST}
+    {3589149600 0 0 WET}
+    {3607898400 3600 1 WEST}
+    {3620599200 0 0 WET}
+    {3639348000 3600 1 WEST}
+    {3652653600 0 0 WET}
+    {3670797600 3600 1 WEST}
+    {3684103200 0 0 WET}
+    {3702247200 3600 1 WEST}
+    {3715552800 0 0 WET}
+    {3733696800 3600 1 WEST}
+    {3747002400 0 0 WET}
+    {3765146400 3600 1 WEST}
+    {3778452000 0 0 WET}
+    {3797200800 3600 1 WEST}
+    {3809901600 0 0 WET}
+    {3828650400 3600 1 WEST}
+    {3841956000 0 0 WET}
+    {3860100000 3600 1 WEST}
+    {3873405600 0 0 WET}
+    {3891549600 3600 1 WEST}
+    {3904855200 0 0 WET}
+    {3922999200 3600 1 WEST}
+    {3936304800 0 0 WET}
+    {3954448800 3600 1 WEST}
+    {3967754400 0 0 WET}
+    {3986503200 3600 1 WEST}
+    {3999808800 0 0 WET}
+    {4017952800 3600 1 WEST}
+    {4031258400 0 0 WET}
+    {4049402400 3600 1 WEST}
+    {4062708000 0 0 WET}
+    {4080852000 3600 1 WEST}
+    {4094157600 0 0 WET}
+}
diff --git a/library/tzdata/Africa/Ceuta b/library/tzdata/Africa/Ceuta
new file mode 100644
index 0000000..882c13d
--- /dev/null
+++ b/library/tzdata/Africa/Ceuta
@@ -0,0 +1,258 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Ceuta) {
+    {-9223372036854775808 -1276 0 LMT}
+    {-2177451524 0 0 WET}
+    {-1630112400 3600 1 WEST}
+    {-1616810400 0 0 WET}
+    {-1451692800 0 0 WET}
+    {-1442451600 3600 1 WEST}
+    {-1427677200 0 0 WET}
+    {-1379293200 3600 1 WEST}
+    {-1364778000 0 0 WET}
+    {-1348448400 3600 1 WEST}
+    {-1333328400 0 0 WET}
+    {-1316394000 3600 1 WEST}
+    {-1301274000 0 0 WET}
+    {-1293840000 0 0 WET}
+    {-81432000 3600 1 WEST}
+    {-71110800 0 0 WET}
+    {141264000 3600 1 WEST}
+    {147222000 0 0 WET}
+    {199756800 3600 1 WEST}
+    {207702000 0 0 WET}
+    {231292800 3600 1 WEST}
+    {244249200 0 0 WET}
+    {265507200 3600 1 WEST}
+    {271033200 0 0 WET}
+    {448243200 3600 0 CET}
+    {504918000 3600 0 CET}
+    {512528400 7200 1 CEST}
+    {528253200 3600 0 CET}
+    {543978000 7200 1 CEST}
+    {559702800 3600 0 CET}
+    {575427600 7200 1 CEST}
+    {591152400 3600 0 CET}
+    {606877200 7200 1 CEST}
+    {622602000 3600 0 CET}
+    {638326800 7200 1 CEST}
+    {654656400 3600 0 CET}
+    {670381200 7200 1 CEST}
+    {686106000 3600 0 CET}
+    {701830800 7200 1 CEST}
+    {717555600 3600 0 CET}
+    {733280400 7200 1 CEST}
+    {749005200 3600 0 CET}
+    {764730000 7200 1 CEST}
+    {780454800 3600 0 CET}
+    {796179600 7200 1 CEST}
+    {811904400 3600 0 CET}
+    {828234000 7200 1 CEST}
+    {846378000 3600 0 CET}
+    {859683600 7200 1 CEST}
+    {877827600 3600 0 CET}
+    {891133200 7200 1 CEST}
+    {909277200 3600 0 CET}
+    {922582800 7200 1 CEST}
+    {941331600 3600 0 CET}
+    {954032400 7200 1 CEST}
+    {972781200 3600 0 CET}
+    {985482000 7200 1 CEST}
+    {1004230800 3600 0 CET}
+    {1017536400 7200 1 CEST}
+    {1035680400 3600 0 CET}
+    {1048986000 7200 1 CEST}
+    {1067130000 3600 0 CET}
+    {1080435600 7200 1 CEST}
+    {1099184400 3600 0 CET}
+    {1111885200 7200 1 CEST}
+    {1130634000 3600 0 CET}
+    {1143334800 7200 1 CEST}
+    {1162083600 3600 0 CET}
+    {1174784400 7200 1 CEST}
+    {1193533200 3600 0 CET}
+    {1206838800 7200 1 CEST}
+    {1224982800 3600 0 CET}
+    {1238288400 7200 1 CEST}
+    {1256432400 3600 0 CET}
+    {1269738000 7200 1 CEST}
+    {1288486800 3600 0 CET}
+    {1301187600 7200 1 CEST}
+    {1319936400 3600 0 CET}
+    {1332637200 7200 1 CEST}
+    {1351386000 3600 0 CET}
+    {1364691600 7200 1 CEST}
+    {1382835600 3600 0 CET}
+    {1396141200 7200 1 CEST}
+    {1414285200 3600 0 CET}
+    {1427590800 7200 1 CEST}
+    {1445734800 3600 0 CET}
+    {1459040400 7200 1 CEST}
+    {1477789200 3600 0 CET}
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+    {1509238800 3600 0 CET}
+    {1521939600 7200 1 CEST}
+    {1540688400 3600 0 CET}
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+    {1572138000 3600 0 CET}
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+    {1603587600 3600 0 CET}
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+    {1635642000 3600 0 CET}
+    {1648342800 7200 1 CEST}
+    {1667091600 3600 0 CET}
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+    {1824944400 3600 0 CET}
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+    {1856394000 3600 0 CET}
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+    {1887843600 3600 0 CET}
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+    {1919293200 3600 0 CET}
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+    {1950742800 3600 0 CET}
+    {1964048400 7200 1 CEST}
+    {1982797200 3600 0 CET}
+    {1995498000 7200 1 CEST}
+    {2014246800 3600 0 CET}
+    {2026947600 7200 1 CEST}
+    {2045696400 3600 0 CET}
+    {2058397200 7200 1 CEST}
+    {2077146000 3600 0 CET}
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+    {2108595600 3600 0 CET}
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+    {2140045200 3600 0 CET}
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+    {2203549200 3600 0 CET}
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+    {2392851600 3600 0 CET}
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+    {2424301200 3600 0 CET}
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+    {2455750800 3600 0 CET}
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+    {3623619600 3600 0 CET}
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+    {3686518800 3600 0 CET}
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+    {3717968400 3600 0 CET}
+    {3731274000 7200 1 CEST}
+    {3750022800 3600 0 CET}
+    {3762723600 7200 1 CEST}
+    {3781472400 3600 0 CET}
+    {3794173200 7200 1 CEST}
+    {3812922000 3600 0 CET}
+    {3825622800 7200 1 CEST}
+    {3844371600 3600 0 CET}
+    {3857677200 7200 1 CEST}
+    {3875821200 3600 0 CET}
+    {3889126800 7200 1 CEST}
+    {3907270800 3600 0 CET}
+    {3920576400 7200 1 CEST}
+    {3939325200 3600 0 CET}
+    {3952026000 7200 1 CEST}
+    {3970774800 3600 0 CET}
+    {3983475600 7200 1 CEST}
+    {4002224400 3600 0 CET}
+    {4015530000 7200 1 CEST}
+    {4033674000 3600 0 CET}
+    {4046979600 7200 1 CEST}
+    {4065123600 3600 0 CET}
+    {4078429200 7200 1 CEST}
+    {4096573200 3600 0 CET}
+}
diff --git a/library/tzdata/Africa/Conakry b/library/tzdata/Africa/Conakry
new file mode 100644
index 0000000..d17ce4b
--- /dev/null
+++ b/library/tzdata/Africa/Conakry
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Conakry) {
+    {-9223372036854775808 -3292 0 LMT}
+    {-1830380708 0 0 GMT}
+    {-1131235200 -3600 0 WAT}
+    {-315615600 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Dakar b/library/tzdata/Africa/Dakar
new file mode 100644
index 0000000..487dc62
--- /dev/null
+++ b/library/tzdata/Africa/Dakar
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Dakar) {
+    {-9223372036854775808 -4184 0 LMT}
+    {-1830379816 -3600 0 WAT}
+    {-902098800 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Dar_es_Salaam b/library/tzdata/Africa/Dar_es_Salaam
new file mode 100644
index 0000000..98151ec
--- /dev/null
+++ b/library/tzdata/Africa/Dar_es_Salaam
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Dar_es_Salaam) {
+    {-9223372036854775808 9428 0 LMT}
+    {-1230777428 10800 0 EAT}
+    {-694321200 9900 0 BEAUT}
+    {-284006700 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Djibouti b/library/tzdata/Africa/Djibouti
new file mode 100644
index 0000000..0ec510c
--- /dev/null
+++ b/library/tzdata/Africa/Djibouti
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Djibouti) {
+    {-9223372036854775808 10356 0 LMT}
+    {-1846291956 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Douala b/library/tzdata/Africa/Douala
new file mode 100644
index 0000000..301a530
--- /dev/null
+++ b/library/tzdata/Africa/Douala
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Douala) {
+    {-9223372036854775808 2328 0 LMT}
+    {-1830386328 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/El_Aaiun b/library/tzdata/Africa/El_Aaiun
new file mode 100644
index 0000000..a8b9d34
--- /dev/null
+++ b/library/tzdata/Africa/El_Aaiun
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/El_Aaiun) {
+    {-9223372036854775808 -3168 0 LMT}
+    {-1136070432 -3600 0 WAT}
+    {198291600 0 0 WET}
+}
diff --git a/library/tzdata/Africa/Freetown b/library/tzdata/Africa/Freetown
new file mode 100644
index 0000000..c3f2d2e
--- /dev/null
+++ b/library/tzdata/Africa/Freetown
@@ -0,0 +1,36 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Freetown) {
+    {-9223372036854775808 -3180 0 LMT}
+    {-2776979220 -3180 0 FMT}
+    {-1785712020 -3600 0 WAT}
+    {-1091487600 -1200 1 SLST}
+    {-1080949200 -3600 0 WAT}
+    {-1059865200 -1200 1 SLST}
+    {-1049326800 -3600 0 WAT}
+    {-1028329200 -1200 1 SLST}
+    {-1017790800 -3600 0 WAT}
+    {-996793200 -1200 1 SLST}
+    {-986254800 -3600 0 WAT}
+    {-965257200 -1200 1 SLST}
+    {-954718800 -3600 0 WAT}
+    {-933634800 -1200 1 SLST}
+    {-923096400 -3600 0 WAT}
+    {-902098800 -1200 1 SLST}
+    {-891560400 -3600 0 WAT}
+    {-870562800 -1200 1 SLST}
+    {-860024400 -3600 0 WAT}
+    {-410223600 0 0 WAT}
+    {-397180800 3600 1 SLST}
+    {-389235600 0 0 GMT}
+    {-365644800 3600 1 SLST}
+    {-357699600 0 0 GMT}
+    {-334108800 3600 1 SLST}
+    {-326163600 0 0 GMT}
+    {-302486400 3600 1 SLST}
+    {-294541200 0 0 GMT}
+    {-270950400 3600 1 SLST}
+    {-263005200 0 0 GMT}
+    {-239414400 3600 1 SLST}
+    {-231469200 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Gaborone b/library/tzdata/Africa/Gaborone
new file mode 100644
index 0000000..7753ba0
--- /dev/null
+++ b/library/tzdata/Africa/Gaborone
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Gaborone) {
+    {-9223372036854775808 6220 0 LMT}
+    {-2682294220 7200 0 CAT}
+    {-829526400 10800 1 CAST}
+    {-813805200 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Harare b/library/tzdata/Africa/Harare
new file mode 100644
index 0000000..7482b15
--- /dev/null
+++ b/library/tzdata/Africa/Harare
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Harare) {
+    {-9223372036854775808 7452 0 LMT}
+    {-2109290652 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Johannesburg b/library/tzdata/Africa/Johannesburg
new file mode 100644
index 0000000..b9a8348
--- /dev/null
+++ b/library/tzdata/Africa/Johannesburg
@@ -0,0 +1,11 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Johannesburg) {
+    {-9223372036854775808 6720 0 LMT}
+    {-2458173120 5400 0 SAST}
+    {-2109288600 7200 0 SAST}
+    {-860976000 10800 1 SAST}
+    {-845254800 7200 0 SAST}
+    {-829526400 10800 1 SAST}
+    {-813805200 7200 0 SAST}
+}
diff --git a/library/tzdata/Africa/Juba b/library/tzdata/Africa/Juba
new file mode 100644
index 0000000..7495981
--- /dev/null
+++ b/library/tzdata/Africa/Juba
@@ -0,0 +1,39 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Juba) {
+    {-9223372036854775808 7584 0 LMT}
+    {-1230775584 7200 0 CAT}
+    {10360800 10800 1 CAST}
+    {24786000 7200 0 CAT}
+    {41810400 10800 1 CAST}
+    {56322000 7200 0 CAT}
+    {73432800 10800 1 CAST}
+    {87944400 7200 0 CAT}
+    {104882400 10800 1 CAST}
+    {119480400 7200 0 CAT}
+    {136332000 10800 1 CAST}
+    {151016400 7200 0 CAT}
+    {167781600 10800 1 CAST}
+    {182552400 7200 0 CAT}
+    {199231200 10800 1 CAST}
+    {214174800 7200 0 CAT}
+    {230680800 10800 1 CAST}
+    {245710800 7200 0 CAT}
+    {262735200 10800 1 CAST}
+    {277246800 7200 0 CAT}
+    {294184800 10800 1 CAST}
+    {308782800 7200 0 CAT}
+    {325634400 10800 1 CAST}
+    {340405200 7200 0 CAT}
+    {357084000 10800 1 CAST}
+    {371941200 7200 0 CAT}
+    {388533600 10800 1 CAST}
+    {403477200 7200 0 CAT}
+    {419983200 10800 1 CAST}
+    {435013200 7200 0 CAT}
+    {452037600 10800 1 CAST}
+    {466635600 7200 0 CAT}
+    {483487200 10800 1 CAST}
+    {498171600 7200 0 CAT}
+    {947930400 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Kampala b/library/tzdata/Africa/Kampala
new file mode 100644
index 0000000..4cc9be1
--- /dev/null
+++ b/library/tzdata/Africa/Kampala
@@ -0,0 +1,9 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Kampala) {
+    {-9223372036854775808 7780 0 LMT}
+    {-1309745380 10800 0 EAT}
+    {-1262314800 9000 0 BEAT}
+    {-694319400 9900 0 BEAUT}
+    {-410237100 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Khartoum b/library/tzdata/Africa/Khartoum
new file mode 100644
index 0000000..dfcac82
--- /dev/null
+++ b/library/tzdata/Africa/Khartoum
@@ -0,0 +1,39 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Khartoum) {
+    {-9223372036854775808 7808 0 LMT}
+    {-1230775808 7200 0 CAT}
+    {10360800 10800 1 CAST}
+    {24786000 7200 0 CAT}
+    {41810400 10800 1 CAST}
+    {56322000 7200 0 CAT}
+    {73432800 10800 1 CAST}
+    {87944400 7200 0 CAT}
+    {104882400 10800 1 CAST}
+    {119480400 7200 0 CAT}
+    {136332000 10800 1 CAST}
+    {151016400 7200 0 CAT}
+    {167781600 10800 1 CAST}
+    {182552400 7200 0 CAT}
+    {199231200 10800 1 CAST}
+    {214174800 7200 0 CAT}
+    {230680800 10800 1 CAST}
+    {245710800 7200 0 CAT}
+    {262735200 10800 1 CAST}
+    {277246800 7200 0 CAT}
+    {294184800 10800 1 CAST}
+    {308782800 7200 0 CAT}
+    {325634400 10800 1 CAST}
+    {340405200 7200 0 CAT}
+    {357084000 10800 1 CAST}
+    {371941200 7200 0 CAT}
+    {388533600 10800 1 CAST}
+    {403477200 7200 0 CAT}
+    {419983200 10800 1 CAST}
+    {435013200 7200 0 CAT}
+    {452037600 10800 1 CAST}
+    {466635600 7200 0 CAT}
+    {483487200 10800 1 CAST}
+    {498171600 7200 0 CAT}
+    {947930400 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Kigali b/library/tzdata/Africa/Kigali
new file mode 100644
index 0000000..f723bcd
--- /dev/null
+++ b/library/tzdata/Africa/Kigali
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Kigali) {
+    {-9223372036854775808 7216 0 LMT}
+    {-1091498416 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Kinshasa b/library/tzdata/Africa/Kinshasa
new file mode 100644
index 0000000..050c1fa
--- /dev/null
+++ b/library/tzdata/Africa/Kinshasa
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Kinshasa) {
+    {-9223372036854775808 3672 0 LMT}
+    {-2276643672 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Lagos b/library/tzdata/Africa/Lagos
new file mode 100644
index 0000000..079572f
--- /dev/null
+++ b/library/tzdata/Africa/Lagos
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Lagos) {
+    {-9223372036854775808 816 0 LMT}
+    {-1588464816 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Libreville b/library/tzdata/Africa/Libreville
new file mode 100644
index 0000000..8427551
--- /dev/null
+++ b/library/tzdata/Africa/Libreville
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Libreville) {
+    {-9223372036854775808 2268 0 LMT}
+    {-1830386268 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Lome b/library/tzdata/Africa/Lome
new file mode 100644
index 0000000..606625c
--- /dev/null
+++ b/library/tzdata/Africa/Lome
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Lome) {
+    {-9223372036854775808 292 0 LMT}
+    {-2429827492 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Luanda b/library/tzdata/Africa/Luanda
new file mode 100644
index 0000000..cd1b29e
--- /dev/null
+++ b/library/tzdata/Africa/Luanda
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Luanda) {
+    {-9223372036854775808 3176 0 LMT}
+    {-2461452776 3124 0 AOT}
+    {-1849395124 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Lubumbashi b/library/tzdata/Africa/Lubumbashi
new file mode 100644
index 0000000..bd67221
--- /dev/null
+++ b/library/tzdata/Africa/Lubumbashi
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Lubumbashi) {
+    {-9223372036854775808 6592 0 LMT}
+    {-2276646592 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Lusaka b/library/tzdata/Africa/Lusaka
new file mode 100644
index 0000000..ed9c30d
--- /dev/null
+++ b/library/tzdata/Africa/Lusaka
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Lusaka) {
+    {-9223372036854775808 6788 0 LMT}
+    {-2109289988 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Malabo b/library/tzdata/Africa/Malabo
new file mode 100644
index 0000000..bec0524
--- /dev/null
+++ b/library/tzdata/Africa/Malabo
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Malabo) {
+    {-9223372036854775808 2108 0 LMT}
+    {-1830386108 0 0 GMT}
+    {-190857600 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Maputo b/library/tzdata/Africa/Maputo
new file mode 100644
index 0000000..6ee208c
--- /dev/null
+++ b/library/tzdata/Africa/Maputo
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Maputo) {
+    {-9223372036854775808 7820 0 LMT}
+    {-2109291020 7200 0 CAT}
+}
diff --git a/library/tzdata/Africa/Maseru b/library/tzdata/Africa/Maseru
new file mode 100644
index 0000000..21ca968
--- /dev/null
+++ b/library/tzdata/Africa/Maseru
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Maseru) {
+    {-9223372036854775808 6600 0 LMT}
+    {-2109289800 7200 0 SAST}
+    {-829526400 10800 1 SAST}
+    {-813805200 7200 0 SAST}
+}
diff --git a/library/tzdata/Africa/Mbabane b/library/tzdata/Africa/Mbabane
new file mode 100644
index 0000000..4d174d5
--- /dev/null
+++ b/library/tzdata/Africa/Mbabane
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Mbabane) {
+    {-9223372036854775808 7464 0 LMT}
+    {-2109290664 7200 0 SAST}
+}
diff --git a/library/tzdata/Africa/Mogadishu b/library/tzdata/Africa/Mogadishu
new file mode 100644
index 0000000..570d3ea
--- /dev/null
+++ b/library/tzdata/Africa/Mogadishu
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Mogadishu) {
+    {-9223372036854775808 10888 0 LMT}
+    {-2403572488 10800 0 EAT}
+    {-1230778800 9000 0 BEAT}
+    {-410236200 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Monrovia b/library/tzdata/Africa/Monrovia
new file mode 100644
index 0000000..1cfff58
--- /dev/null
+++ b/library/tzdata/Africa/Monrovia
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Monrovia) {
+    {-9223372036854775808 -2588 0 LMT}
+    {-2776979812 -2588 0 MMT}
+    {-1604359012 -2670 0 LRT}
+    {73529070 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Nairobi b/library/tzdata/Africa/Nairobi
new file mode 100644
index 0000000..6846069
--- /dev/null
+++ b/library/tzdata/Africa/Nairobi
@@ -0,0 +1,9 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Nairobi) {
+    {-9223372036854775808 8836 0 LMT}
+    {-1309746436 10800 0 EAT}
+    {-1262314800 9000 0 BEAT}
+    {-946780200 9900 0 BEAUT}
+    {-315629100 10800 0 EAT}
+}
diff --git a/library/tzdata/Africa/Ndjamena b/library/tzdata/Africa/Ndjamena
new file mode 100644
index 0000000..af4daaa
--- /dev/null
+++ b/library/tzdata/Africa/Ndjamena
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Ndjamena) {
+    {-9223372036854775808 3612 0 LMT}
+    {-1830387612 3600 0 WAT}
+    {308703600 7200 1 WAST}
+    {321314400 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Niamey b/library/tzdata/Africa/Niamey
new file mode 100644
index 0000000..40ded06b
--- /dev/null
+++ b/library/tzdata/Africa/Niamey
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Niamey) {
+    {-9223372036854775808 508 0 LMT}
+    {-1830384508 -3600 0 WAT}
+    {-1131231600 0 0 GMT}
+    {-315619200 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Nouakchott b/library/tzdata/Africa/Nouakchott
new file mode 100644
index 0000000..f7369d0
--- /dev/null
+++ b/library/tzdata/Africa/Nouakchott
@@ -0,0 +1,8 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Nouakchott) {
+    {-9223372036854775808 -3828 0 LMT}
+    {-1830380172 0 0 GMT}
+    {-1131235200 -3600 0 WAT}
+    {-286930800 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Ouagadougou b/library/tzdata/Africa/Ouagadougou
new file mode 100644
index 0000000..88a7145
--- /dev/null
+++ b/library/tzdata/Africa/Ouagadougou
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Ouagadougou) {
+    {-9223372036854775808 -364 0 LMT}
+    {-1830383636 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Porto-Novo b/library/tzdata/Africa/Porto-Novo
new file mode 100644
index 0000000..b89cf1b
--- /dev/null
+++ b/library/tzdata/Africa/Porto-Novo
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Porto-Novo) {
+    {-9223372036854775808 628 0 LMT}
+    {-1830384628 0 0 GMT}
+    {-1131235200 3600 0 WAT}
+}
diff --git a/library/tzdata/Africa/Sao_Tome b/library/tzdata/Africa/Sao_Tome
new file mode 100644
index 0000000..ab1590d
--- /dev/null
+++ b/library/tzdata/Africa/Sao_Tome
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Sao_Tome) {
+    {-9223372036854775808 1616 0 LMT}
+    {-2713912016 -2192 0 LMT}
+    {-1830381808 0 0 GMT}
+}
diff --git a/library/tzdata/Africa/Timbuktu b/library/tzdata/Africa/Timbuktu
new file mode 100644
index 0000000..8057eed
--- /dev/null
+++ b/library/tzdata/Africa/Timbuktu
@@ -0,0 +1,5 @@
+# created by tools/tclZIC.tcl - do not edit
+if {![info exists TZData(Africa/Bamako)]} {
+    LoadTimeZoneFile Africa/Bamako
+}
+set TZData(:Africa/Timbuktu) $TZData(:Africa/Bamako)
diff --git a/library/tzdata/Africa/Tripoli b/library/tzdata/Africa/Tripoli
new file mode 100644
index 0000000..e993249
--- /dev/null
+++ b/library/tzdata/Africa/Tripoli
@@ -0,0 +1,31 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Tripoli) {
+    {-9223372036854775808 3164 0 LMT}
+    {-1577926364 3600 0 CET}
+    {-574902000 7200 1 CEST}
+    {-512175600 7200 1 CEST}
+    {-449888400 7200 1 CEST}
+    {-347158800 7200 0 EET}
+    {378684000 3600 0 CET}
+    {386463600 7200 1 CEST}
+    {402271200 3600 0 CET}
+    {417999600 7200 1 CEST}
+    {433807200 3600 0 CET}
+    {449622000 7200 1 CEST}
+    {465429600 3600 0 CET}
+    {481590000 7200 1 CEST}
+    {496965600 3600 0 CET}
+    {512953200 7200 1 CEST}
+    {528674400 3600 0 CET}
+    {544230000 7200 1 CEST}
+    {560037600 3600 0 CET}
+    {575852400 7200 1 CEST}
+    {591660000 3600 0 CET}
+    {607388400 7200 1 CEST}
+    {623196000 3600 0 CET}
+    {641775600 7200 0 EET}
+    {844034400 3600 0 CET}
+    {860108400 7200 1 CEST}
+    {875916000 7200 0 EET}
+}
diff --git a/library/tzdata/Africa/Tunis b/library/tzdata/Africa/Tunis
new file mode 100644
index 0000000..0c1db4d
--- /dev/null
+++ b/library/tzdata/Africa/Tunis
@@ -0,0 +1,39 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Tunis) {
+    {-9223372036854775808 2444 0 LMT}
+    {-2797202444 561 0 PMT}
+    {-1855958961 3600 0 CET}
+    {-969242400 7200 1 CEST}
+    {-950493600 3600 0 CET}
+    {-941940000 7200 1 CEST}
+    {-891136800 3600 0 CET}
+    {-877827600 7200 1 CEST}
+    {-857257200 3600 0 CET}
+    {-844556400 7200 1 CEST}
+    {-842918400 3600 0 CET}
+    {-842223600 7200 1 CEST}
+    {-828230400 3600 0 CET}
+    {-812502000 7200 1 CEST}
+    {-796269600 3600 0 CET}
+    {-781052400 7200 1 CEST}
+    {-766634400 3600 0 CET}
+    {231202800 7200 1 CEST}
+    {243903600 3600 0 CET}
+    {262825200 7200 1 CEST}
+    {276044400 3600 0 CET}
+    {581122800 7200 1 CEST}
+    {591145200 3600 0 CET}
+    {606870000 7200 1 CEST}
+    {622594800 3600 0 CET}
+    {641516400 7200 1 CEST}
+    {654649200 3600 0 CET}
+    {1114902000 7200 1 CEST}
+    {1128038400 3600 0 CET}
+    {1143334800 7200 1 CEST}
+    {1162083600 3600 0 CET}
+    {1174784400 7200 1 CEST}
+    {1193533200 3600 0 CET}
+    {1206838800 7200 1 CEST}
+    {1224982800 3600 0 CET}
+}
diff --git a/library/tzdata/Africa/Windhoek b/library/tzdata/Africa/Windhoek
new file mode 100644
index 0000000..a655f2e
--- /dev/null
+++ b/library/tzdata/Africa/Windhoek
@@ -0,0 +1,222 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Africa/Windhoek) {
+    {-9223372036854775808 4104 0 LMT}
+    {-2458170504 5400 0 SWAT}
+    {-2109288600 7200 0 SAST}
+    {-860976000 10800 1 SAST}
+    {-845254800 7200 0 SAST}
+    {637970400 7200 0 CAT}
+    {765324000 3600 0 WAT}
+    {778640400 7200 1 WAST}
+    {796780800 3600 0 WAT}
+    {810090000 7200 1 WAST}
+    {828835200 3600 0 WAT}
+    {841539600 7200 1 WAST}
+    {860284800 3600 0 WAT}
+    {873594000 7200 1 WAST}
+    {891734400 3600 0 WAT}
+    {905043600 7200 1 WAST}
+    {923184000 3600 0 WAT}
+    {936493200 7200 1 WAST}
+    {954633600 3600 0 WAT}
+    {967942800 7200 1 WAST}
+    {986083200 3600 0 WAT}
+    {999392400 7200 1 WAST}
+    {1018137600 3600 0 WAT}
+    {1030842000 7200 1 WAST}
+    {1049587200 3600 0 WAT}
+    {1062896400 7200 1 WAST}
+    {1081036800 3600 0 WAT}
+    {1094346000 7200 1 WAST}
+    {1112486400 3600 0 WAT}
+    {1125795600 7200 1 WAST}
+    {1143936000 3600 0 WAT}
+    {1157245200 7200 1 WAST}
+    {1175385600 3600 0 WAT}
+    {1188694800 7200 1 WAST}
+    {1207440000 3600 0 WAT}
+    {1220749200 7200 1 WAST}
+    {1238889600 3600 0 WAT}
+    {1252198800 7200 1 WAST}
+    {1270339200 3600 0 WAT}
+    {1283648400 7200 1 WAST}
+    {1301788800 3600 0 WAT}
+    {1315098000 7200 1 WAST}
+    {1333238400 3600 0 WAT}
+    {1346547600 7200 1 WAST}
+    {1365292800 3600 0 WAT}
+    {1377997200 7200 1 WAST}
+    {1396742400 3600 0 WAT}
+    {1410051600 7200 1 WAST}
+    {1428192000 3600 0 WAT}
+    {1441501200 7200 1 WAST}
+    {1459641600 3600 0 WAT}
+    {1472950800 7200 1 WAST}
+    {1491091200 3600 0 WAT}
+    {1504400400 7200 1 WAST}
+    {1522540800 3600 0 WAT}
+    {1535850000 7200 1 WAST}
+    {1554595200 3600 0 WAT}
+    {1567299600 7200 1 WAST}
+    {1586044800 3600 0 WAT}
+    {1599354000 7200 1 WAST}
+    {1617494400 3600 0 WAT}
+    {1630803600 7200 1 WAST}
+    {1648944000 3600 0 WAT}
+    {1662253200 7200 1 WAST}
+    {1680393600 3600 0 WAT}
+    {1693702800 7200 1 WAST}
+    {1712448000 3600 0 WAT}
+    {1725152400 7200 1 WAST}
+    {1743897600 3600 0 WAT}
+    {1757206800 7200 1 WAST}
+    {1775347200 3600 0 WAT}
+    {1788656400 7200 1 WAST}
+    {1806796800 3600 0 WAT}
+    {1820106000 7200 1 WAST}
+    {1838246400 3600 0 WAT}
+    {1851555600 7200 1 WAST}
+    {1869696000 3600 0 WAT}
+    {1883005200 7200 1 WAST}
+    {1901750400 3600 0 WAT}
+    {1914454800 7200 1 WAST}
+    {1933200000 3600 0 WAT}
+    {1946509200 7200 1 WAST}
+    {1964649600 3600 0 WAT}
+    {1977958800 7200 1 WAST}
+    {1996099200 3600 0 WAT}
+    {2009408400 7200 1 WAST}
+    {2027548800 3600 0 WAT}
+    {2040858000 7200 1 WAST}
+    {2058998400 3600 0 WAT}
+    {2072307600 7200 1 WAST}
+    {2091052800 3600 0 WAT}
+    {2104362000 7200 1 WAST}
+    {2122502400 3600 0 WAT}
+    {2135811600 7200 1 WAST}
+    {2153952000 3600 0 WAT}
+    {2167261200 7200 1 WAST}
+    {2185401600 3600 0 WAT}
+    {2198710800 7200 1 WAST}
+    {2216851200 3600 0 WAT}
+    {2230160400 7200 1 WAST}
+    {2248905600 3600 0 WAT}
+    {2261610000 7200 1 WAST}
+    {2280355200 3600 0 WAT}
+    {2293664400 7200 1 WAST}
+    {2311804800 3600 0 WAT}
+    {2325114000 7200 1 WAST}
+    {2343254400 3600 0 WAT}
+    {2356563600 7200 1 WAST}
+    {2374704000 3600 0 WAT}
+    {2388013200 7200 1 WAST}
+    {2406153600 3600 0 WAT}
+    {2419462800 7200 1 WAST}
+    {2438208000 3600 0 WAT}
+    {2450912400 7200 1 WAST}
+    {2469657600 3600 0 WAT}
+    {2482966800 7200 1 WAST}
+    {2501107200 3600 0 WAT}
+    {2514416400 7200 1 WAST}
+    {2532556800 3600 0 WAT}
+    {2545866000 7200 1 WAST}
+    {2564006400 3600 0 WAT}
+    {2577315600 7200 1 WAST}
+    {2596060800 3600 0 WAT}
+    {2608765200 7200 1 WAST}
+    {2627510400 3600 0 WAT}
+    {2640819600 7200 1 WAST}
+    {2658960000 3600 0 WAT}
+    {2672269200 7200 1 WAST}
+    {2690409600 3600 0 WAT}
+    {2703718800 7200 1 WAST}
+    {2721859200 3600 0 WAT}
+    {2735168400 7200 1 WAST}
+    {2753308800 3600 0 WAT}
+    {2766618000 7200 1 WAST}
+    {2785363200 3600 0 WAT}
+    {2798067600 7200 1 WAST}
+    {2816812800 3600 0 WAT}
+    {2830122000 7200 1 WAST}
+    {2848262400 3600 0 WAT}
+    {2861571600 7200 1 WAST}
+    {2879712000 3600 0 WAT}
+    {2893021200 7200 1 WAST}
+    {2911161600 3600 0 WAT}
+    {2924470800 7200 1 WAST}
+    {2942611200 3600 0 WAT}
+    {2955920400 7200 1 WAST}
+    {2974665600 3600 0 WAT}
+    {2987974800 7200 1 WAST}
+    {3006115200 3600 0 WAT}
+    {3019424400 7200 1 WAST}
+    {3037564800 3600 0 WAT}
+    {3050874000 7200 1 WAST}
+    {3069014400 3600 0 WAT}
+    {3082323600 7200 1 WAST}
+    {3100464000 3600 0 WAT}
+    {3113773200 7200 1 WAST}
+    {3132518400 3600 0 WAT}
+    {3145222800 7200 1 WAST}
+    {3163968000 3600 0 WAT}
+    {3177277200 7200 1 WAST}
+    {3195417600 3600 0 WAT}
+    {3208726800 7200 1 WAST}
+    {3226867200 3600 0 WAT}
+    {3240176400 7200 1 WAST}
+    {3258316800 3600 0 WAT}
+    {3271626000 7200 1 WAST}
+    {3289766400 3600 0 WAT}
+    {3303075600 7200 1 WAST}
+    {3321820800 3600 0 WAT}
+    {3334525200 7200 1 WAST}
+    {3353270400 3600 0 WAT}
+    {3366579600 7200 1 WAST}
+    {3384720000 3600 0 WAT}
+    {3398029200 7200 1 WAST}
+    {3416169600 3600 0 WAT}
+    {3429478800 7200 1 WAST}
+    {3447619200 3600 0 WAT}
+    {3460928400 7200 1 WAST}
+    {3479673600 3600 0 WAT}
+    {3492378000 7200 1 WAST}
+    {3511123200 3600 0 WAT}
+    {3524432400 7200 1 WAST}
+    {3542572800 3600 0 WAT}
+    {3555882000 7200 1 WAST}
+    {3574022400 3600 0 WAT}
+    {3587331600 7200 1 WAST}
+    {3605472000 3600 0 WAT}
+    {3618781200 7200 1 WAST}
+    {3636921600 3600 0 WAT}
+    {3650230800 7200 1 WAST}
+    {3668976000 3600 0 WAT}
+    {3681680400 7200 1 WAST}
+    {3700425600 3600 0 WAT}
+    {3713734800 7200 1 WAST}
+    {3731875200 3600 0 WAT}
+    {3745184400 7200 1 WAST}
+    {3763324800 3600 0 WAT}
+    {3776634000 7200 1 WAST}
+    {3794774400 3600 0 WAT}
+    {3808083600 7200 1 WAST}
+    {3826224000 3600 0 WAT}
+    {3839533200 7200 1 WAST}
+    {3858278400 3600 0 WAT}
+    {3871587600 7200 1 WAST}
+    {3889728000 3600 0 WAT}
+    {3903037200 7200 1 WAST}
+    {3921177600 3600 0 WAT}
+    {3934486800 7200 1 WAST}
+    {3952627200 3600 0 WAT}
+    {3965936400 7200 1 WAST}
+    {3984076800 3600 0 WAT}
+    {3997386000 7200 1 WAST}
+    {4016131200 3600 0 WAT}
+    {4028835600 7200 1 WAST}
+    {4047580800 3600 0 WAT}
+    {4060890000 7200 1 WAST}
+    {4079030400 3600 0 WAT}
+    {4092339600 7200 1 WAST}
+}
diff --git a/library/tzdata/America/Adak b/library/tzdata/America/Adak
new file mode 100644
index 0000000..f3c5e5c
--- /dev/null
+++ b/library/tzdata/America/Adak
@@ -0,0 +1,276 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Adak) {
+    {-9223372036854775808 44001 0 LMT}
+    {-3225356001 -42398 0 LMT}
+    {-2188944802 -39600 0 NST}
+    {-883573200 -39600 0 NST}
+    {-880196400 -36000 1 NWT}
+    {-769395600 -36000 1 NPT}
+    {-765374400 -39600 0 NST}
+    {-757342800 -39600 0 NST}
+    {-86878800 -39600 0 BST}
+    {-31496400 -39600 0 BST}
+    {-21466800 -36000 1 BDT}
+    {-5745600 -39600 0 BST}
+    {9982800 -36000 1 BDT}
+    {25704000 -39600 0 BST}
+    {41432400 -36000 1 BDT}
+    {57758400 -39600 0 BST}
+    {73486800 -36000 1 BDT}
+    {89208000 -39600 0 BST}
+    {104936400 -36000 1 BDT}
+    {120657600 -39600 0 BST}
+    {126709200 -36000 1 BDT}
+    {152107200 -39600 0 BST}
+    {162392400 -36000 1 BDT}
+    {183556800 -39600 0 BST}
+    {199285200 -36000 1 BDT}
+    {215611200 -39600 0 BST}
+    {230734800 -36000 1 BDT}
+    {247060800 -39600 0 BST}
+    {262789200 -36000 1 BDT}
+    {278510400 -39600 0 BST}
+    {294238800 -36000 1 BDT}
+    {309960000 -39600 0 BST}
+    {325688400 -36000 1 BDT}
+    {341409600 -39600 0 BST}
+    {357138000 -36000 1 BDT}
+    {372859200 -39600 0 BST}
+    {388587600 -36000 1 BDT}
+    {404913600 -39600 0 BST}
+    {420037200 -36000 1 BDT}
+    {439034400 -36000 0 HAST}
+    {452088000 -32400 1 HADT}
+    {467809200 -36000 0 HAST}
+    {483537600 -32400 1 HADT}
+    {499258800 -36000 0 HAST}
+    {514987200 -32400 1 HADT}
+    {530708400 -36000 0 HAST}
+    {544622400 -32400 1 HADT}
+    {562158000 -36000 0 HAST}
+    {576072000 -32400 1 HADT}
+    {594212400 -36000 0 HAST}
+    {607521600 -32400 1 HADT}
+    {625662000 -36000 0 HAST}
+    {638971200 -32400 1 HADT}
+    {657111600 -36000 0 HAST}
+    {671025600 -32400 1 HADT}
+    {688561200 -36000 0 HAST}
+    {702475200 -32400 1 HADT}
+    {720010800 -36000 0 HAST}
+    {733924800 -32400 1 HADT}
+    {752065200 -36000 0 HAST}
+    {765374400 -32400 1 HADT}
+    {783514800 -36000 0 HAST}
+    {796824000 -32400 1 HADT}
+    {814964400 -36000 0 HAST}
+    {828878400 -32400 1 HADT}
+    {846414000 -36000 0 HAST}
+    {860328000 -32400 1 HADT}
+    {877863600 -36000 0 HAST}
+    {891777600 -32400 1 HADT}
+    {909313200 -36000 0 HAST}
+    {923227200 -32400 1 HADT}
+    {941367600 -36000 0 HAST}
+    {954676800 -32400 1 HADT}
+    {972817200 -36000 0 HAST}
+    {986126400 -32400 1 HADT}
+    {1004266800 -36000 0 HAST}
+    {1018180800 -32400 1 HADT}
+    {1035716400 -36000 0 HAST}
+    {1049630400 -32400 1 HADT}
+    {1067166000 -36000 0 HAST}
+    {1081080000 -32400 1 HADT}
+    {1099220400 -36000 0 HAST}
+    {1112529600 -32400 1 HADT}
+    {1130670000 -36000 0 HAST}
+    {1143979200 -32400 1 HADT}
+    {1162119600 -36000 0 HAST}
+    {1173614400 -32400 1 HADT}
+    {1194174000 -36000 0 HAST}
+    {1205064000 -32400 1 HADT}
+    {1225623600 -36000 0 HAST}
+    {1236513600 -32400 1 HADT}
+    {1257073200 -36000 0 HAST}
+    {1268568000 -32400 1 HADT}
+    {1289127600 -36000 0 HAST}
+    {1300017600 -32400 1 HADT}
+    {1320577200 -36000 0 HAST}
+    {1331467200 -32400 1 HADT}
+    {1352026800 -36000 0 HAST}
+    {1362916800 -32400 1 HADT}
+    {1383476400 -36000 0 HAST}
+    {1394366400 -32400 1 HADT}
+    {1414926000 -36000 0 HAST}
+    {1425816000 -32400 1 HADT}
+    {1446375600 -36000 0 HAST}
+    {1457870400 -32400 1 HADT}
+    {1478430000 -36000 0 HAST}
+    {1489320000 -32400 1 HADT}
+    {1509879600 -36000 0 HAST}
+    {1520769600 -32400 1 HADT}
+    {1541329200 -36000 0 HAST}
+    {1552219200 -32400 1 HADT}
+    {1572778800 -36000 0 HAST}
+    {1583668800 -32400 1 HADT}
+    {1604228400 -36000 0 HAST}
+    {1615723200 -32400 1 HADT}
+    {1636282800 -36000 0 HAST}
+    {1647172800 -32400 1 HADT}
+    {1667732400 -36000 0 HAST}
+    {1678622400 -32400 1 HADT}
+    {1699182000 -36000 0 HAST}
+    {1710072000 -32400 1 HADT}
+    {1730631600 -36000 0 HAST}
+    {1741521600 -32400 1 HADT}
+    {1762081200 -36000 0 HAST}
+    {1772971200 -32400 1 HADT}
+    {1793530800 -36000 0 HAST}
+    {1805025600 -32400 1 HADT}
+    {1825585200 -36000 0 HAST}
+    {1836475200 -32400 1 HADT}
+    {1857034800 -36000 0 HAST}
+    {1867924800 -32400 1 HADT}
+    {1888484400 -36000 0 HAST}
+    {1899374400 -32400 1 HADT}
+    {1919934000 -36000 0 HAST}
+    {1930824000 -32400 1 HADT}
+    {1951383600 -36000 0 HAST}
+    {1962878400 -32400 1 HADT}
+    {1983438000 -36000 0 HAST}
+    {1994328000 -32400 1 HADT}
+    {2014887600 -36000 0 HAST}
+    {2025777600 -32400 1 HADT}
+    {2046337200 -36000 0 HAST}
+    {2057227200 -32400 1 HADT}
+    {2077786800 -36000 0 HAST}
+    {2088676800 -32400 1 HADT}
+    {2109236400 -36000 0 HAST}
+    {2120126400 -32400 1 HADT}
+    {2140686000 -36000 0 HAST}
+    {2152180800 -32400 1 HADT}
+    {2172740400 -36000 0 HAST}
+    {2183630400 -32400 1 HADT}
+    {2204190000 -36000 0 HAST}
+    {2215080000 -32400 1 HADT}
+    {2235639600 -36000 0 HAST}
+    {2246529600 -32400 1 HADT}
+    {2267089200 -36000 0 HAST}
+    {2277979200 -32400 1 HADT}
+    {2298538800 -36000 0 HAST}
+    {2309428800 -32400 1 HADT}
+    {2329988400 -36000 0 HAST}
+    {2341483200 -32400 1 HADT}
+    {2362042800 -36000 0 HAST}
+    {2372932800 -32400 1 HADT}
+    {2393492400 -36000 0 HAST}
+    {2404382400 -32400 1 HADT}
+    {2424942000 -36000 0 HAST}
+    {2435832000 -32400 1 HADT}
+    {2456391600 -36000 0 HAST}
+    {2467281600 -32400 1 HADT}
+    {2487841200 -36000 0 HAST}
+    {2499336000 -32400 1 HADT}
+    {2519895600 -36000 0 HAST}
+    {2530785600 -32400 1 HADT}
+    {2551345200 -36000 0 HAST}
+    {2562235200 -32400 1 HADT}
+    {2582794800 -36000 0 HAST}
+    {2593684800 -32400 1 HADT}
+    {2614244400 -36000 0 HAST}
+    {2625134400 -32400 1 HADT}
+    {2645694000 -36000 0 HAST}
+    {2656584000 -32400 1 HADT}
+    {2677143600 -36000 0 HAST}
+    {2688638400 -32400 1 HADT}
+    {2709198000 -36000 0 HAST}
+    {2720088000 -32400 1 HADT}
+    {2740647600 -36000 0 HAST}
+    {2751537600 -32400 1 HADT}
+    {2772097200 -36000 0 HAST}
+    {2782987200 -32400 1 HADT}
+    {2803546800 -36000 0 HAST}
+    {2814436800 -32400 1 HADT}
+    {2834996400 -36000 0 HAST}
+    {2846491200 -32400 1 HADT}
+    {2867050800 -36000 0 HAST}
+    {2877940800 -32400 1 HADT}
+    {2898500400 -36000 0 HAST}
+    {2909390400 -32400 1 HADT}
+    {2929950000 -36000 0 HAST}
+    {2940840000 -32400 1 HADT}
+    {2961399600 -36000 0 HAST}
+    {2972289600 -32400 1 HADT}
+    {2992849200 -36000 0 HAST}
+    {3003739200 -32400 1 HADT}
+    {3024298800 -36000 0 HAST}
+    {3035793600 -32400 1 HADT}
+    {3056353200 -36000 0 HAST}
+    {3067243200 -32400 1 HADT}
+    {3087802800 -36000 0 HAST}
+    {3098692800 -32400 1 HADT}
+    {3119252400 -36000 0 HAST}
+    {3130142400 -32400 1 HADT}
+    {3150702000 -36000 0 HAST}
+    {3161592000 -32400 1 HADT}
+    {3182151600 -36000 0 HAST}
+    {3193041600 -32400 1 HADT}
+    {3213601200 -36000 0 HAST}
+    {3225096000 -32400 1 HADT}
+    {3245655600 -36000 0 HAST}
+    {3256545600 -32400 1 HADT}
+    {3277105200 -36000 0 HAST}
+    {3287995200 -32400 1 HADT}
+    {3308554800 -36000 0 HAST}
+    {3319444800 -32400 1 HADT}
+    {3340004400 -36000 0 HAST}
+    {3350894400 -32400 1 HADT}
+    {3371454000 -36000 0 HAST}
+    {3382948800 -32400 1 HADT}
+    {3403508400 -36000 0 HAST}
+    {3414398400 -32400 1 HADT}
+    {3434958000 -36000 0 HAST}
+    {3445848000 -32400 1 HADT}
+    {3466407600 -36000 0 HAST}
+    {3477297600 -32400 1 HADT}
+    {3497857200 -36000 0 HAST}
+    {3508747200 -32400 1 HADT}
+    {3529306800 -36000 0 HAST}
+    {3540196800 -32400 1 HADT}
+    {3560756400 -36000 0 HAST}
+    {3572251200 -32400 1 HADT}
+    {3592810800 -36000 0 HAST}
+    {3603700800 -32400 1 HADT}
+    {3624260400 -36000 0 HAST}
+    {3635150400 -32400 1 HADT}
+    {3655710000 -36000 0 HAST}
+    {3666600000 -32400 1 HADT}
+    {3687159600 -36000 0 HAST}
+    {3698049600 -32400 1 HADT}
+    {3718609200 -36000 0 HAST}
+    {3730104000 -32400 1 HADT}
+    {3750663600 -36000 0 HAST}
+    {3761553600 -32400 1 HADT}
+    {3782113200 -36000 0 HAST}
+    {3793003200 -32400 1 HADT}
+    {3813562800 -36000 0 HAST}
+    {3824452800 -32400 1 HADT}
+    {3845012400 -36000 0 HAST}
+    {3855902400 -32400 1 HADT}
+    {3876462000 -36000 0 HAST}
+    {3887352000 -32400 1 HADT}
+    {3907911600 -36000 0 HAST}
+    {3919406400 -32400 1 HADT}
+    {3939966000 -36000 0 HAST}
+    {3950856000 -32400 1 HADT}
+    {3971415600 -36000 0 HAST}
+    {3982305600 -32400 1 HADT}
+    {4002865200 -36000 0 HAST}
+    {4013755200 -32400 1 HADT}
+    {4034314800 -36000 0 HAST}
+    {4045204800 -32400 1 HADT}
+    {4065764400 -36000 0 HAST}
+    {4076654400 -32400 1 HADT}
+    {4097214000 -36000 0 HAST}
+}
diff --git a/library/tzdata/America/Anchorage b/library/tzdata/America/Anchorage
new file mode 100644
index 0000000..e02dd01
--- /dev/null
+++ b/library/tzdata/America/Anchorage
@@ -0,0 +1,276 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Anchorage) {
+    {-9223372036854775808 50424 0 LMT}
+    {-3225362424 -35976 0 LMT}
+    {-2188951224 -36000 0 CAT}
+    {-883576800 -36000 0 CAWT}
+    {-880200000 -32400 1 CAWT}
+    {-769395600 -32400 0 CAPT}
+    {-765378000 -36000 0 CAPT}
+    {-757346400 -36000 0 CAT}
+    {-86882400 -36000 0 AHST}
+    {-31500000 -36000 0 AHST}
+    {-21470400 -32400 1 AHDT}
+    {-5749200 -36000 0 AHST}
+    {9979200 -32400 1 AHDT}
+    {25700400 -36000 0 AHST}
+    {41428800 -32400 1 AHDT}
+    {57754800 -36000 0 AHST}
+    {73483200 -32400 1 AHDT}
+    {89204400 -36000 0 AHST}
+    {104932800 -32400 1 AHDT}
+    {120654000 -36000 0 AHST}
+    {126705600 -32400 1 AHDT}
+    {152103600 -36000 0 AHST}
+    {162388800 -32400 1 AHDT}
+    {183553200 -36000 0 AHST}
+    {199281600 -32400 1 AHDT}
+    {215607600 -36000 0 AHST}
+    {230731200 -32400 1 AHDT}
+    {247057200 -36000 0 AHST}
+    {262785600 -32400 1 AHDT}
+    {278506800 -36000 0 AHST}
+    {294235200 -32400 1 AHDT}
+    {309956400 -36000 0 AHST}
+    {325684800 -32400 1 AHDT}
+    {341406000 -36000 0 AHST}
+    {357134400 -32400 1 AHDT}
+    {372855600 -36000 0 AHST}
+    {388584000 -32400 1 AHDT}
+    {404910000 -36000 0 AHST}
+    {420033600 -32400 1 AHDT}
+    {439030800 -32400 0 AKST}
+    {452084400 -28800 1 AKDT}
+    {467805600 -32400 0 AKST}
+    {483534000 -28800 1 AKDT}
+    {499255200 -32400 0 AKST}
+    {514983600 -28800 1 AKDT}
+    {530704800 -32400 0 AKST}
+    {544618800 -28800 1 AKDT}
+    {562154400 -32400 0 AKST}
+    {576068400 -28800 1 AKDT}
+    {594208800 -32400 0 AKST}
+    {607518000 -28800 1 AKDT}
+    {625658400 -32400 0 AKST}
+    {638967600 -28800 1 AKDT}
+    {657108000 -32400 0 AKST}
+    {671022000 -28800 1 AKDT}
+    {688557600 -32400 0 AKST}
+    {702471600 -28800 1 AKDT}
+    {720007200 -32400 0 AKST}
+    {733921200 -28800 1 AKDT}
+    {752061600 -32400 0 AKST}
+    {765370800 -28800 1 AKDT}
+    {783511200 -32400 0 AKST}
+    {796820400 -28800 1 AKDT}
+    {814960800 -32400 0 AKST}
+    {828874800 -28800 1 AKDT}
+    {846410400 -32400 0 AKST}
+    {860324400 -28800 1 AKDT}
+    {877860000 -32400 0 AKST}
+    {891774000 -28800 1 AKDT}
+    {909309600 -32400 0 AKST}
+    {923223600 -28800 1 AKDT}
+    {941364000 -32400 0 AKST}
+    {954673200 -28800 1 AKDT}
+    {972813600 -32400 0 AKST}
+    {986122800 -28800 1 AKDT}
+    {1004263200 -32400 0 AKST}
+    {1018177200 -28800 1 AKDT}
+    {1035712800 -32400 0 AKST}
+    {1049626800 -28800 1 AKDT}
+    {1067162400 -32400 0 AKST}
+    {1081076400 -28800 1 AKDT}
+    {1099216800 -32400 0 AKST}
+    {1112526000 -28800 1 AKDT}
+    {1130666400 -32400 0 AKST}
+    {1143975600 -28800 1 AKDT}
+    {1162116000 -32400 0 AKST}
+    {1173610800 -28800 1 AKDT}
+    {1194170400 -32400 0 AKST}
+    {1205060400 -28800 1 AKDT}
+    {1225620000 -32400 0 AKST}
+    {1236510000 -28800 1 AKDT}
+    {1257069600 -32400 0 AKST}
+    {1268564400 -28800 1 AKDT}
+    {1289124000 -32400 0 AKST}
+    {1300014000 -28800 1 AKDT}
+    {1320573600 -32400 0 AKST}
+    {1331463600 -28800 1 AKDT}
+    {1352023200 -32400 0 AKST}
+    {1362913200 -28800 1 AKDT}
+    {1383472800 -32400 0 AKST}
+    {1394362800 -28800 1 AKDT}
+    {1414922400 -32400 0 AKST}
+    {1425812400 -28800 1 AKDT}
+    {1446372000 -32400 0 AKST}
+    {1457866800 -28800 1 AKDT}
+    {1478426400 -32400 0 AKST}
+    {1489316400 -28800 1 AKDT}
+    {1509876000 -32400 0 AKST}
+    {1520766000 -28800 1 AKDT}
+    {1541325600 -32400 0 AKST}
+    {1552215600 -28800 1 AKDT}
+    {1572775200 -32400 0 AKST}
+    {1583665200 -28800 1 AKDT}
+    {1604224800 -32400 0 AKST}
+    {1615719600 -28800 1 AKDT}
+    {1636279200 -32400 0 AKST}
+    {1647169200 -28800 1 AKDT}
+    {1667728800 -32400 0 AKST}
+    {1678618800 -28800 1 AKDT}
+    {1699178400 -32400 0 AKST}
+    {1710068400 -28800 1 AKDT}
+    {1730628000 -32400 0 AKST}
+    {1741518000 -28800 1 AKDT}
+    {1762077600 -32400 0 AKST}
+    {1772967600 -28800 1 AKDT}
+    {1793527200 -32400 0 AKST}
+    {1805022000 -28800 1 AKDT}
+    {1825581600 -32400 0 AKST}
+    {1836471600 -28800 1 AKDT}
+    {1857031200 -32400 0 AKST}
+    {1867921200 -28800 1 AKDT}
+    {1888480800 -32400 0 AKST}
+    {1899370800 -28800 1 AKDT}
+    {1919930400 -32400 0 AKST}
+    {1930820400 -28800 1 AKDT}
+    {1951380000 -32400 0 AKST}
+    {1962874800 -28800 1 AKDT}
+    {1983434400 -32400 0 AKST}
+    {1994324400 -28800 1 AKDT}
+    {2014884000 -32400 0 AKST}
+    {2025774000 -28800 1 AKDT}
+    {2046333600 -32400 0 AKST}
+    {2057223600 -28800 1 AKDT}
+    {2077783200 -32400 0 AKST}
+    {2088673200 -28800 1 AKDT}
+    {2109232800 -32400 0 AKST}
+    {2120122800 -28800 1 AKDT}
+    {2140682400 -32400 0 AKST}
+    {2152177200 -28800 1 AKDT}
+    {2172736800 -32400 0 AKST}
+    {2183626800 -28800 1 AKDT}
+    {2204186400 -32400 0 AKST}
+    {2215076400 -28800 1 AKDT}
+    {2235636000 -32400 0 AKST}
+    {2246526000 -28800 1 AKDT}
+    {2267085600 -32400 0 AKST}
+    {2277975600 -28800 1 AKDT}
+    {2298535200 -32400 0 AKST}
+    {2309425200 -28800 1 AKDT}
+    {2329984800 -32400 0 AKST}
+    {2341479600 -28800 1 AKDT}
+    {2362039200 -32400 0 AKST}
+    {2372929200 -28800 1 AKDT}
+    {2393488800 -32400 0 AKST}
+    {2404378800 -28800 1 AKDT}
+    {2424938400 -32400 0 AKST}
+    {2435828400 -28800 1 AKDT}
+    {2456388000 -32400 0 AKST}
+    {2467278000 -28800 1 AKDT}
+    {2487837600 -32400 0 AKST}
+    {2499332400 -28800 1 AKDT}
+    {2519892000 -32400 0 AKST}
+    {2530782000 -28800 1 AKDT}
+    {2551341600 -32400 0 AKST}
+    {2562231600 -28800 1 AKDT}
+    {2582791200 -32400 0 AKST}
+    {2593681200 -28800 1 AKDT}
+    {2614240800 -32400 0 AKST}
+    {2625130800 -28800 1 AKDT}
+    {2645690400 -32400 0 AKST}
+    {2656580400 -28800 1 AKDT}
+    {2677140000 -32400 0 AKST}
+    {2688634800 -28800 1 AKDT}
+    {2709194400 -32400 0 AKST}
+    {2720084400 -28800 1 AKDT}
+    {2740644000 -32400 0 AKST}
+    {2751534000 -28800 1 AKDT}
+    {2772093600 -32400 0 AKST}
+    {2782983600 -28800 1 AKDT}
+    {2803543200 -32400 0 AKST}
+    {2814433200 -28800 1 AKDT}
+    {2834992800 -32400 0 AKST}
+    {2846487600 -28800 1 AKDT}
+    {2867047200 -32400 0 AKST}
+    {2877937200 -28800 1 AKDT}
+    {2898496800 -32400 0 AKST}
+    {2909386800 -28800 1 AKDT}
+    {2929946400 -32400 0 AKST}
+    {2940836400 -28800 1 AKDT}
+    {2961396000 -32400 0 AKST}
+    {2972286000 -28800 1 AKDT}
+    {2992845600 -32400 0 AKST}
+    {3003735600 -28800 1 AKDT}
+    {3024295200 -32400 0 AKST}
+    {3035790000 -28800 1 AKDT}
+    {3056349600 -32400 0 AKST}
+    {3067239600 -28800 1 AKDT}
+    {3087799200 -32400 0 AKST}
+    {3098689200 -28800 1 AKDT}
+    {3119248800 -32400 0 AKST}
+    {3130138800 -28800 1 AKDT}
+    {3150698400 -32400 0 AKST}
+    {3161588400 -28800 1 AKDT}
+    {3182148000 -32400 0 AKST}
+    {3193038000 -28800 1 AKDT}
+    {3213597600 -32400 0 AKST}
+    {3225092400 -28800 1 AKDT}
+    {3245652000 -32400 0 AKST}
+    {3256542000 -28800 1 AKDT}
+    {3277101600 -32400 0 AKST}
+    {3287991600 -28800 1 AKDT}
+    {3308551200 -32400 0 AKST}
+    {3319441200 -28800 1 AKDT}
+    {3340000800 -32400 0 AKST}
+    {3350890800 -28800 1 AKDT}
+    {3371450400 -32400 0 AKST}
+    {3382945200 -28800 1 AKDT}
+    {3403504800 -32400 0 AKST}
+    {3414394800 -28800 1 AKDT}
+    {3434954400 -32400 0 AKST}
+    {3445844400 -28800 1 AKDT}
+    {3466404000 -32400 0 AKST}
+    {3477294000 -28800 1 AKDT}
+    {3497853600 -32400 0 AKST}
+    {3508743600 -28800 1 AKDT}
+    {3529303200 -32400 0 AKST}
+    {3540193200 -28800 1 AKDT}
+    {3560752800 -32400 0 AKST}
+    {3572247600 -28800 1 AKDT}
+    {3592807200 -32400 0 AKST}
+    {3603697200 -28800 1 AKDT}
+    {3624256800 -32400 0 AKST}
+    {3635146800 -28800 1 AKDT}
+    {3655706400 -32400 0 AKST}
+    {3666596400 -28800 1 AKDT}
+    {3687156000 -32400 0 AKST}
+    {3698046000 -28800 1 AKDT}
+    {3718605600 -32400 0 AKST}
+    {3730100400 -28800 1 AKDT}
+    {3750660000 -32400 0 AKST}
+    {3761550000 -28800 1 AKDT}
+    {3782109600 -32400 0 AKST}
+    {3792999600 -28800 1 AKDT}
+    {3813559200 -32400 0 AKST}
+    {3824449200 -28800 1 AKDT}
+    {3845008800 -32400 0 AKST}
+    {3855898800 -28800 1 AKDT}
+    {3876458400 -32400 0 AKST}
+    {3887348400 -28800 1 AKDT}
+    {3907908000 -32400 0 AKST}
+    {3919402800 -28800 1 AKDT}
+    {3939962400 -32400 0 AKST}
+    {3950852400 -28800 1 AKDT}
+    {3971412000 -32400 0 AKST}
+    {3982302000 -28800 1 AKDT}
+    {4002861600 -32400 0 AKST}
+    {4013751600 -28800 1 AKDT}
+    {4034311200 -32400 0 AKST}
+    {4045201200 -28800 1 AKDT}
+    {4065760800 -32400 0 AKST}
+    {4076650800 -28800 1 AKDT}
+    {4097210400 -32400 0 AKST}
+}
diff --git a/library/tzdata/America/Anguilla b/library/tzdata/America/Anguilla
new file mode 100644
index 0000000..cfe7483
--- /dev/null
+++ b/library/tzdata/America/Anguilla
@@ -0,0 +1,6 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Anguilla) {
+    {-9223372036854775808 -15136 0 LMT}
+    {-1825098464 -14400 0 AST}
+}
diff --git a/library/tzdata/America/Antigua b/library/tzdata/America/Antigua
new file mode 100644
index 0000000..5433e9b
--- /dev/null
+++ b/library/tzdata/America/Antigua
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Antigua) {
+    {-9223372036854775808 -14832 0 LMT}
+    {-1825098768 -18000 0 EST}
+    {-599598000 -14400 0 AST}
+}
diff --git a/library/tzdata/America/Araguaina b/library/tzdata/America/Araguaina
new file mode 100644
index 0000000..dc1b543
--- /dev/null
+++ b/library/tzdata/America/Araguaina
@@ -0,0 +1,232 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Araguaina) {
+    {-9223372036854775808 -11568 0 LMT}
+    {-1767214032 -10800 0 BRT}
+    {-1206957600 -7200 1 BRST}
+    {-1191362400 -10800 0 BRT}
+    {-1175374800 -7200 1 BRST}
+    {-1159826400 -10800 0 BRT}
+    {-633819600 -7200 1 BRST}
+    {-622069200 -10800 0 BRT}
+    {-602283600 -7200 1 BRST}
+    {-591832800 -10800 0 BRT}
+    {-570747600 -7200 1 BRST}
+    {-560210400 -10800 0 BRT}
+    {-539125200 -7200 1 BRST}
+    {-531352800 -10800 0 BRT}
+    {-191365200 -7200 1 BRST}
+    {-184197600 -10800 0 BRT}
+    {-155163600 -7200 1 BRST}
+    {-150069600 -10800 0 BRT}
+    {-128898000 -7200 1 BRST}
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+}
diff --git a/library/tzdata/America/Argentina/Buenos_Aires b/library/tzdata/America/Argentina/Buenos_Aires
new file mode 100644
index 0000000..73cc8e9
--- /dev/null
+++ b/library/tzdata/America/Argentina/Buenos_Aires
@@ -0,0 +1,67 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Buenos_Aires) {
+    {-9223372036854775808 -14028 0 LMT}
+    {-2372097972 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -10800 0 ART}
+    {687927600 -7200 1 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224385200 -7200 1 ARST}
+    {1237082400 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/Catamarca b/library/tzdata/America/Argentina/Catamarca
new file mode 100644
index 0000000..7739203
--- /dev/null
+++ b/library/tzdata/America/Argentina/Catamarca
@@ -0,0 +1,68 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Catamarca) {
+    {-9223372036854775808 -15788 0 LMT}
+    {-2372096212 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -14400 0 WART}
+    {687931200 -7200 0 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1086058800 -14400 0 WART}
+    {1087704000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/ComodRivadavia b/library/tzdata/America/Argentina/ComodRivadavia
new file mode 100644
index 0000000..2611a3d
--- /dev/null
+++ b/library/tzdata/America/Argentina/ComodRivadavia
@@ -0,0 +1,5 @@
+# created by tools/tclZIC.tcl - do not edit
+if {![info exists TZData(America/Argentina/Catamarca)]} {
+    LoadTimeZoneFile America/Argentina/Catamarca
+}
+set TZData(:America/Argentina/ComodRivadavia) $TZData(:America/Argentina/Catamarca)
diff --git a/library/tzdata/America/Argentina/Cordoba b/library/tzdata/America/Argentina/Cordoba
new file mode 100644
index 0000000..b08539e
--- /dev/null
+++ b/library/tzdata/America/Argentina/Cordoba
@@ -0,0 +1,67 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Cordoba) {
+    {-9223372036854775808 -15408 0 LMT}
+    {-2372096592 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -14400 0 WART}
+    {687931200 -7200 0 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224385200 -7200 1 ARST}
+    {1237082400 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/Jujuy b/library/tzdata/America/Argentina/Jujuy
new file mode 100644
index 0000000..4f95f8a
--- /dev/null
+++ b/library/tzdata/America/Argentina/Jujuy
@@ -0,0 +1,67 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Jujuy) {
+    {-9223372036854775808 -15672 0 LMT}
+    {-2372096328 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -14400 0 WART}
+    {657086400 -10800 1 WARST}
+    {669178800 -14400 0 WART}
+    {686721600 -7200 1 ARST}
+    {694231200 -7200 0 ART}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/La_Rioja b/library/tzdata/America/Argentina/La_Rioja
new file mode 100644
index 0000000..835e29d
--- /dev/null
+++ b/library/tzdata/America/Argentina/La_Rioja
@@ -0,0 +1,69 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/La_Rioja) {
+    {-9223372036854775808 -16044 0 LMT}
+    {-2372095956 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667792800 -14400 0 WART}
+    {673588800 -10800 0 ART}
+    {687927600 -7200 1 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1086058800 -14400 0 WART}
+    {1087704000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/Mendoza b/library/tzdata/America/Argentina/Mendoza
new file mode 100644
index 0000000..2c6fb58
--- /dev/null
+++ b/library/tzdata/America/Argentina/Mendoza
@@ -0,0 +1,68 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Mendoza) {
+    {-9223372036854775808 -16516 0 LMT}
+    {-2372095484 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -14400 0 WART}
+    {655963200 -10800 1 WARST}
+    {667796400 -14400 0 WART}
+    {687499200 -10800 1 WARST}
+    {699418800 -14400 0 WART}
+    {719380800 -7200 0 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1085281200 -14400 0 WART}
+    {1096171200 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/Rio_Gallegos b/library/tzdata/America/Argentina/Rio_Gallegos
new file mode 100644
index 0000000..91d37dd
--- /dev/null
+++ b/library/tzdata/America/Argentina/Rio_Gallegos
@@ -0,0 +1,68 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Rio_Gallegos) {
+    {-9223372036854775808 -16612 0 LMT}
+    {-2372095388 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -10800 0 ART}
+    {687927600 -7200 1 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1086058800 -14400 0 WART}
+    {1087704000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/Salta b/library/tzdata/America/Argentina/Salta
new file mode 100644
index 0000000..a5a7010
--- /dev/null
+++ b/library/tzdata/America/Argentina/Salta
@@ -0,0 +1,66 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Salta) {
+    {-9223372036854775808 -15700 0 LMT}
+    {-2372096300 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -14400 0 WART}
+    {687931200 -7200 0 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/San_Juan b/library/tzdata/America/Argentina/San_Juan
new file mode 100644
index 0000000..417e234
--- /dev/null
+++ b/library/tzdata/America/Argentina/San_Juan
@@ -0,0 +1,69 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/San_Juan) {
+    {-9223372036854775808 -16444 0 LMT}
+    {-2372095556 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667792800 -14400 0 WART}
+    {673588800 -10800 0 ART}
+    {687927600 -7200 1 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1085972400 -14400 0 WART}
+    {1090728000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/San_Luis b/library/tzdata/America/Argentina/San_Luis
new file mode 100644
index 0000000..bec1554
--- /dev/null
+++ b/library/tzdata/America/Argentina/San_Luis
@@ -0,0 +1,68 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/San_Luis) {
+    {-9223372036854775808 -15924 0 LMT}
+    {-2372096076 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {631159200 -7200 1 ARST}
+    {637380000 -14400 0 WART}
+    {655963200 -10800 1 WARST}
+    {667796400 -14400 0 WART}
+    {675748800 -10800 0 ART}
+    {938919600 -10800 1 WARST}
+    {952052400 -10800 0 ART}
+    {1085972400 -14400 0 WART}
+    {1090728000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1200880800 -10800 0 WART}
+    {1205031600 -14400 0 WART}
+    {1223784000 -10800 1 WARST}
+    {1236481200 -14400 0 WART}
+    {1255233600 -10800 1 WARST}
+}
diff --git a/library/tzdata/America/Argentina/Tucuman b/library/tzdata/America/Argentina/Tucuman
new file mode 100644
index 0000000..3500986
--- /dev/null
+++ b/library/tzdata/America/Argentina/Tucuman
@@ -0,0 +1,69 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Tucuman) {
+    {-9223372036854775808 -15652 0 LMT}
+    {-2372096348 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -14400 0 WART}
+    {687931200 -7200 0 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1086058800 -14400 0 WART}
+    {1087099200 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224385200 -7200 1 ARST}
+    {1237082400 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Argentina/Ushuaia b/library/tzdata/America/Argentina/Ushuaia
new file mode 100644
index 0000000..4fcf92d
--- /dev/null
+++ b/library/tzdata/America/Argentina/Ushuaia
@@ -0,0 +1,68 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Argentina/Ushuaia) {
+    {-9223372036854775808 -16392 0 LMT}
+    {-2372095608 -15408 0 CMT}
+    {-1567453392 -14400 0 ART}
+    {-1233432000 -10800 0 ARST}
+    {-1222981200 -14400 0 ART}
+    {-1205956800 -10800 1 ARST}
+    {-1194037200 -14400 0 ART}
+    {-1172865600 -10800 1 ARST}
+    {-1162501200 -14400 0 ART}
+    {-1141329600 -10800 1 ARST}
+    {-1130965200 -14400 0 ART}
+    {-1109793600 -10800 1 ARST}
+    {-1099429200 -14400 0 ART}
+    {-1078257600 -10800 1 ARST}
+    {-1067806800 -14400 0 ART}
+    {-1046635200 -10800 1 ARST}
+    {-1036270800 -14400 0 ART}
+    {-1015099200 -10800 1 ARST}
+    {-1004734800 -14400 0 ART}
+    {-983563200 -10800 1 ARST}
+    {-973198800 -14400 0 ART}
+    {-952027200 -10800 1 ARST}
+    {-941576400 -14400 0 ART}
+    {-931032000 -10800 1 ARST}
+    {-900882000 -14400 0 ART}
+    {-890337600 -10800 1 ARST}
+    {-833749200 -14400 0 ART}
+    {-827265600 -10800 1 ARST}
+    {-752274000 -14400 0 ART}
+    {-733780800 -10800 1 ARST}
+    {-197326800 -14400 0 ART}
+    {-190843200 -10800 1 ARST}
+    {-184194000 -14400 0 ART}
+    {-164491200 -10800 1 ARST}
+    {-152658000 -14400 0 ART}
+    {-132955200 -10800 1 ARST}
+    {-121122000 -14400 0 ART}
+    {-101419200 -10800 1 ARST}
+    {-86821200 -14400 0 ART}
+    {-71092800 -10800 1 ARST}
+    {-54766800 -14400 0 ART}
+    {-39038400 -10800 1 ARST}
+    {-23317200 -14400 0 ART}
+    {-7588800 -10800 0 ART}
+    {128142000 -7200 1 ARST}
+    {136605600 -10800 0 ART}
+    {596948400 -7200 1 ARST}
+    {605066400 -10800 0 ART}
+    {624423600 -7200 1 ARST}
+    {636516000 -10800 0 ART}
+    {656478000 -7200 1 ARST}
+    {667965600 -10800 0 ART}
+    {687927600 -7200 1 ARST}
+    {699415200 -10800 0 ART}
+    {719377200 -7200 1 ARST}
+    {731469600 -10800 0 ART}
+    {938916000 -10800 0 ART}
+    {938919600 -10800 1 ARST}
+    {952056000 -10800 0 ART}
+    {1085886000 -14400 0 WART}
+    {1087704000 -10800 0 ART}
+    {1198983600 -7200 1 ARST}
+    {1205632800 -10800 0 ART}
+    {1224295200 -10800 0 ART}
+}
diff --git a/library/tzdata/America/Aruba b/library/tzdata/America/Aruba
new file mode 100644
index 0000000..92f182d
--- /dev/null
+++ b/library/tzdata/America/Aruba
@@ -0,0 +1,7 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Aruba) {
+    {-9223372036854775808 -16824 0 LMT}
+    {-1826738376 -16200 0 ANT}
+    {-157750200 -14400 0 AST}
+}
diff --git a/library/tzdata/America/Asuncion b/library/tzdata/America/Asuncion
new file mode 100644
index 0000000..14bbab2
--- /dev/null
+++ b/library/tzdata/America/Asuncion
@@ -0,0 +1,259 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Asuncion) {
+    {-9223372036854775808 -13840 0 LMT}
+    {-2524507760 -13840 0 AMT}
+    {-1206389360 -14400 0 PYT}
+    {86760000 -10800 0 PYT}
+    {134017200 -14400 0 PYT}
+    {162878400 -14400 0 PYT}
+    {181368000 -10800 1 PYST}
+    {194497200 -14400 0 PYT}
+    {212990400 -10800 1 PYST}
+    {226033200 -14400 0 PYT}
+    {244526400 -10800 1 PYST}
+    {257569200 -14400 0 PYT}
+    {276062400 -10800 1 PYST}
+    {291783600 -14400 0 PYT}
+    {307598400 -10800 1 PYST}
+    {323406000 -14400 0 PYT}
+    {339220800 -10800 1 PYST}
+    {354942000 -14400 0 PYT}
+    {370756800 -10800 1 PYST}
+    {386478000 -14400 0 PYT}
+    {402292800 -10800 1 PYST}
+    {418014000 -14400 0 PYT}
+    {433828800 -10800 1 PYST}
+    {449636400 -14400 0 PYT}
+    {465451200 -10800 1 PYST}
+    {481172400 -14400 0 PYT}
+    {496987200 -10800 1 PYST}
+    {512708400 -14400 0 PYT}
+    {528523200 -10800 1 PYST}
+    {544244400 -14400 0 PYT}
+    {560059200 -10800 1 PYST}
+    {575866800 -14400 0 PYT}
+    {591681600 -10800 1 PYST}
+    {607402800 -14400 0 PYT}
+    {625032000 -10800 1 PYST}
+    {638938800 -14400 0 PYT}
+    {654753600 -10800 1 PYST}
+    {670474800 -14400 0 PYT}
+    {686721600 -10800 1 PYST}
+    {699418800 -14400 0 PYT}
+    {718257600 -10800 1 PYST}
+    {733546800 -14400 0 PYT}
+    {749448000 -10800 1 PYST}
+    {762318000 -14400 0 PYT}
+    {780984000 -10800 1 PYST}
+    {793767600 -14400 0 PYT}
+    {812520000 -10800 1 PYST}
+    {825649200 -14400 0 PYT}
+    {844574400 -10800 1 PYST}
+    {856666800 -14400 0 PYT}
+    {876024000 -10800 1 PYST}
+    {888721200 -14400 0 PYT}
+    {907473600 -10800 1 PYST}
+    {920775600 -14400 0 PYT}
+    {938923200 -10800 1 PYST}
+    {952225200 -14400 0 PYT}
+    {970372800 -10800 1 PYST}
+    {983674800 -14400 0 PYT}
+    {1002427200 -10800 1 PYST}
+    {1018148400 -14400 0 PYT}
+    {1030852800 -10800 1 PYST}
+    {1049598000 -14400 0 PYT}
+    {1062907200 -10800 1 PYST}
+    {1081047600 -14400 0 PYT}
+    {1097985600 -10800 1 PYST}
+    {1110682800 -14400 0 PYT}
+    {1129435200 -10800 1 PYST}
+    {1142132400 -14400 0 PYT}
+    {1160884800 -10800 1 PYST}
+    {1173582000 -14400 0 PYT}
+    {1192939200 -10800 1 PYST}
+    {1205031600 -14400 0 PYT}
+    {1224388800 -10800 1 PYST}
+    {1236481200 -14400 0 PYT}
+    {1255838400 -10800 1 PYST}
+    {1270954800 -14400 0 PYT}
+    {1286078400 -10800 1 PYST}
+    {1302404400 -14400 0 PYT}
+    {1317528000 -10800 1 PYST}
+    {1333854000 -14400 0 PYT}
+    {1349582400 -10800 1 PYST}
+    {1365908400 -14400 0 PYT}
+    {1381032000 -10800 1 PYST}
+    {1397358000 -14400 0 PYT}
+    {1412481600 -10800 1 PYST}
+    {1428807600 -14400 0 PYT}
+    {1443931200 -10800 1 PYST}
+    {1460257200 -14400 0 PYT}
+    {1475380800 -10800 1 PYST}
+    {1491706800 -14400 0 PYT}
+    {1506830400 -10800 1 PYST}
+    {1523156400 -14400 0 PYT}
+    {1538884800 -10800 1 PYST}
+    {1555210800 -14400 0 PYT}
+    {1570334400 -10800 1 PYST}
+    {1586660400 -14400 0 PYT}
+    {1601784000 -10800 1 PYST}
+    {1618110000 -14400 0 PYT}
+    {1633233600 -10800 1 PYST}
+    {1649559600 -14400 0 PYT}
+    {1664683200 -10800 1 PYST}
+    {1681009200 -14400 0 PYT}
+    {1696132800 -10800 1 PYST}
+    {1713063600 -14400 0 PYT}
+    {1728187200 -10800 1 PYST}
+    {1744513200 -14400 0 PYT}
+    {1759636800 -10800 1 PYST}
+    {1775962800 -14400 0 PYT}
+    {1791086400 -10800 1 PYST}
+    {1807412400 -14400 0 PYT}
+    {1822536000 -10800 1 PYST}
+    {1838862000 -14400 0 PYT}
+    {1853985600 -10800 1 PYST}
+    {1870311600 -14400 0 PYT}
+    {1886040000 -10800 1 PYST}
+    {1902366000 -14400 0 PYT}
+    {1917489600 -10800 1 PYST}
+    {1933815600 -14400 0 PYT}
+    {1948939200 -10800 1 PYST}
+    {1965265200 -14400 0 PYT}
+    {1980388800 -10800 1 PYST}
+    {1996714800 -14400 0 PYT}
+    {2011838400 -10800 1 PYST}
+    {2028164400 -14400 0 PYT}
+    {2043288000 -10800 1 PYST}
+    {2059614000 -14400 0 PYT}
+    {2075342400 -10800 1 PYST}
+    {2091668400 -14400 0 PYT}
+    {2106792000 -10800 1 PYST}
+    {2123118000 -14400 0 PYT}
+    {2138241600 -10800 1 PYST}
+    {2154567600 -14400 0 PYT}
+    {2169691200 -10800 1 PYST}
+    {2186017200 -14400 0 PYT}
+    {2201140800 -10800 1 PYST}
+    {2217466800 -14400 0 PYT}
+    {2233195200 -10800 1 PYST}
+    {2249521200 -14400 0 PYT}
+    {2264644800 -10800 1 PYST}
+    {2280970800 -14400 0 PYT}
+    {2296094400 -10800 1 PYST}
+    {2312420400 -14400 0 PYT}
+    {2327544000 -10800 1 PYST}
+    {2343870000 -14400 0 PYT}
+    {2358993600 -10800 1 PYST}
+    {2375319600 -14400 0 PYT}
+    {2390443200 -10800 1 PYST}
+    {2406769200 -14400 0 PYT}
+    {2422497600 -10800 1 PYST}
+    {2438823600 -14400 0 PYT}
+    {2453947200 -10800 1 PYST}
+    {2470273200 -14400 0 PYT}
+    {2485396800 -10800 1 PYST}
+    {2501722800 -14400 0 PYT}
+    {2516846400 -10800 1 PYST}
+    {2533172400 -14400 0 PYT}
+    {2548296000 -10800 1 PYST}
+    {2564622000 -14400 0 PYT}
+    {2579745600 -10800 1 PYST}
+    {2596676400 -14400 0 PYT}
+    {2611800000 -10800 1 PYST}
+    {2628126000 -14400 0 PYT}
+    {2643249600 -10800 1 PYST}
+    {2659575600 -14400 0 PYT}
+    {2674699200 -10800 1 PYST}
+    {2691025200 -14400 0 PYT}
+    {2706148800 -10800 1 PYST}
+    {2722474800 -14400 0 PYT}
+    {2737598400 -10800 1 PYST}
+    {2753924400 -14400 0 PYT}
+    {2769652800 -10800 1 PYST}
+    {2785978800 -14400 0 PYT}
+    {2801102400 -10800 1 PYST}
+    {2817428400 -14400 0 PYT}
+    {2832552000 -10800 1 PYST}
+    {2848878000 -14400 0 PYT}
+    {2864001600 -10800 1 PYST}
+    {2880327600 -14400 0 PYT}
+    {2895451200 -10800 1 PYST}
+    {2911777200 -14400 0 PYT}
+    {2926900800 -10800 1 PYST}
+    {2943226800 -14400 0 PYT}
+    {2958955200 -10800 1 PYST}
+    {2975281200 -14400 0 PYT}
+    {2990404800 -10800 1 PYST}
+    {3006730800 -14400 0 PYT}
+    {3021854400 -10800 1 PYST}
+    {3038180400 -14400 0 PYT}
+    {3053304000 -10800 1 PYST}
+    {3069630000 -14400 0 PYT}
+    {3084753600 -10800 1 PYST}
+    {3101079600 -14400 0 PYT}
+    {3116808000 -10800 1 PYST}
+    {3133134000 -14400 0 PYT}
+    {3148257600 -10800 1 PYST}
+    {3164583600 -14400 0 PYT}
+    {3179707200 -10800 1 PYST}
+    {3196033200 -14400 0 PYT}
+    {3211156800 -10800 1 PYST}
+    {3227482800 -14400 0 PYT}
+    {3242606400 -10800 1 PYST}
+    {3258932400 -14400 0 PYT}
+    {3274056000 -10800 1 PYST}
+    {3290382000 -14400 0 PYT}
+    {3306110400 -10800 1 PYST}
+    {3322436400 -14400 0 PYT}
+    {3337560000 -10800 1 PYST}
+    {3353886000 -14400 0 PYT}
+    {3369009600 -10800 1 PYST}
+    {3385335600 -14400 0 PYT}
+    {3400459200 -10800 1 PYST}
+    {3416785200 -14400 0 PYT}
+    {3431908800 -10800 1 PYST}
+    {3448234800 -14400 0 PYT}
+    {3463358400 -10800 1 PYST}
+    {3480289200 -14400 0 PYT}
+    {3495412800 -10800 1 PYST}
+    {3511738800 -14400 0 PYT}
+    {3526862400 -10800 1 PYST}
+    {3543188400 -14400 0 PYT}
+    {3558312000 -10800 1 PYST}
+    {3574638000 -14400 0 PYT}
+    {3589761600 -10800 1 PYST}
+    {3606087600 -14400 0 PYT}
+    {3621211200 -10800 1 PYST}
+    {3637537200 -14400 0 PYT}
+    {3653265600 -10800 1 PYST}
+    {3669591600 -14400 0 PYT}
+    {3684715200 -10800 1 PYST}
+    {3701041200 -14400 0 PYT}
+    {3716164800 -10800 1 PYST}
+    {3732490800 -14400 0 PYT}
+    {3747614400 -10800 1 PYST}
+    {3763940400 -14400 0 PYT}
+    {3779064000 -10800 1 PYST}
+    {3795390000 -14400 0 PYT}
+    {3810513600 -10800 1 PYST}
+    {3826839600 -14400 0 PYT}
+    {3842568000 -10800 1 PYST}
+    {3858894000 -14400 0 PYT}
+    {3874017600 -10800 1 PYST}
+    {3890343600 -14400 0 PYT}
+    {3905467200 -10800 1 PYST}
+    {3921793200 -14400 0 PYT}
+    {3936916800 -10800 1 PYST}
+    {3953242800 -14400 0 PYT}
+    {3968366400 -10800 1 PYST}
+    {3984692400 -14400 0 PYT}
+    {4000420800 -10800 1 PYST}
+    {4016746800 -14400 0 PYT}
+    {4031870400 -10800 1 PYST}
+    {4048196400 -14400 0 PYT}
+    {4063320000 -10800 1 PYST}
+    {4079646000 -14400 0 PYT}
+    {4094769600 -10800 1 PYST}
+}
diff --git a/library/tzdata/America/Atikokan b/library/tzdata/America/Atikokan
new file mode 100755
index 0000000..e72b04f
--- /dev/null
+++ b/library/tzdata/America/Atikokan
@@ -0,0 +1,12 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Atikokan) {
+    {-9223372036854775808 -21988 0 LMT}
+    {-2366733212 -21600 0 CST}
+    {-1632067200 -18000 1 CDT}
+    {-1615136400 -21600 0 CST}
+    {-923248800 -18000 1 CDT}
+    {-880214400 -18000 0 CWT}
+    {-769395600 -18000 1 CPT}
+    {-765388800 -18000 0 EST}
+}
diff --git a/library/tzdata/America/Atka b/library/tzdata/America/Atka
new file mode 100644
index 0000000..8da3302
--- /dev/null
+++ b/library/tzdata/America/Atka
@@ -0,0 +1,5 @@
+# created by tools/tclZIC.tcl - do not edit
+if {![info exists TZData(America/Adak)]} {
+    LoadTimeZoneFile America/Adak
+}
+set TZData(:America/Atka) $TZData(:America/Adak)
diff --git a/library/tzdata/America/Bahia b/library/tzdata/America/Bahia
new file mode 100644
index 0000000..ac67b71
--- /dev/null
+++ b/library/tzdata/America/Bahia
@@ -0,0 +1,68 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Bahia) {
+    {-9223372036854775808 -9244 0 LMT}
+    {-1767216356 -10800 0 BRT}
+    {-1206957600 -7200 1 BRST}
+    {-1191362400 -10800 0 BRT}
+    {-1175374800 -7200 1 BRST}
+    {-1159826400 -10800 0 BRT}
+    {-633819600 -7200 1 BRST}
+    {-622069200 -10800 0 BRT}
+    {-602283600 -7200 1 BRST}
+    {-591832800 -10800 0 BRT}
+    {-570747600 -7200 1 BRST}
+    {-560210400 -10800 0 BRT}
+    {-539125200 -7200 1 BRST}
+    {-531352800 -10800 0 BRT}
+    {-191365200 -7200 1 BRST}
+    {-184197600 -10800 0 BRT}
+    {-155163600 -7200 1 BRST}
+    {-150069600 -10800 0 BRT}
+    {-128898000 -7200 1 BRST}
+    {-121125600 -10800 0 BRT}
+    {-99954000 -7200 1 BRST}
+    {-89589600 -10800 0 BRT}
+    {-68418000 -7200 1 BRST}
+    {-57967200 -10800 0 BRT}
+    {499748400 -7200 1 BRST}
+    {511236000 -10800 0 BRT}
+    {530593200 -7200 1 BRST}
+    {540266400 -10800 0 BRT}
+    {562129200 -7200 1 BRST}
+    {571197600 -10800 0 BRT}
+    {592974000 -7200 1 BRST}
+    {602042400 -10800 0 BRT}
+    {624423600 -7200 1 BRST}
+    {634701600 -10800 0 BRT}
+    {656478000 -7200 1 BRST}
+    {666756000 -10800 0 BRT}
+    {687927600 -7200 1 BRST}
+    {697600800 -10800 0 BRT}
+    {719982000 -7200 1 BRST}
+    {728445600 -10800 0 BRT}
+    {750826800 -7200 1 BRST}
+    {761709600 -10800 0 BRT}
+    {782276400 -7200 1 BRST}
+    {793159200 -10800 0 BRT}
+    {813726000 -7200 1 BRST}
+    {824004000 -10800 0 BRT}
+    {844570800 -7200 1 BRST}
+    {856058400 -10800 0 BRT}
+    {876106800 -7200 1 BRST}
+    {888717600 -10800 0 BRT}
+    {908074800 -7200 1 BRST}
+    {919562400 -10800 0 BRT}
+    {938919600 -7200 1 BRST}
+    {951616800 -10800 0 BRT}
+    {970974000 -7200 1 BRST}
+    {982461600 -10800 0 BRT}
+    {1003028400 -7200 1 BRST}
+    {1013911200 -10800 0 BRT}
+    {1036292400 -7200 1 BRST}
+    {1045360800 -10800 0 BRT}
+    {1064368800 -10800 0 BRT}
+    {1318734000 -7200 0 BRST}
+    {1330221600 -10800 0 BRT}
+    {1350784800 -10800 0 BRT}
+}
diff --git a/library/tzdata/America/Bahia_Banderas b/library/tzdata/America/Bahia_Banderas
new file mode 100644
index 0000000..8c40a0e
--- /dev/null
+++ b/library/tzdata/America/Bahia_Banderas
@@ -0,0 +1,222 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Bahia_Banderas) {
+    {-9223372036854775808 -25260 0 LMT}
+    {-1514739600 -25200 0 MST}
+    {-1343066400 -21600 0 CST}
+    {-1234807200 -25200 0 MST}
+    {-1220292000 -21600 0 CST}
+    {-1207159200 -25200 0 MST}
+    {-1191344400 -21600 0 CST}
+    {-873828000 -25200 0 MST}
+    {-661539600 -28800 0 PST}
+    {28800 -25200 0 MST}
+    {828867600 -21600 1 MDT}
+    {846403200 -25200 0 MST}
+    {860317200 -21600 1 MDT}
+    {877852800 -25200 0 MST}
+    {891766800 -21600 1 MDT}
+    {909302400 -25200 0 MST}
+    {923216400 -21600 1 MDT}
+    {941356800 -25200 0 MST}
+    {954666000 -21600 1 MDT}
+    {972806400 -25200 0 MST}
+    {989139600 -21600 1 MDT}
+    {1001836800 -25200 0 MST}
+    {1018170000 -21600 1 MDT}
+    {1035705600 -25200 0 MST}
+    {1049619600 -21600 1 MDT}
+    {1067155200 -25200 0 MST}
+    {1081069200 -21600 1 MDT}
+    {1099209600 -25200 0 MST}
+    {1112518800 -21600 1 MDT}
+    {1130659200 -25200 0 MST}
+    {1143968400 -21600 1 MDT}
+    {1162108800 -25200 0 MST}
+    {1175418000 -21600 1 MDT}
+    {1193558400 -25200 0 MST}
+    {1207472400 -21600 1 MDT}
+    {1225008000 -25200 0 MST}
+    {1238922000 -21600 1 MDT}
+    {1256457600 -25200 0 MST}
+    {1270371600 -18000 0 CDT}
+    {1288508400 -21600 0 CST}
+    {1301817600 -18000 1 CDT}
+    {1319958000 -21600 0 CST}
+    {1333267200 -18000 1 CDT}
+    {1351407600 -21600 0 CST}
+    {1365321600 -18000 1 CDT}
+    {1382857200 -21600 0 CST}
+    {1396771200 -18000 1 CDT}
+    {1414306800 -21600 0 CST}
+    {1428220800 -18000 1 CDT}
+    {1445756400 -21600 0 CST}
+    {1459670400 -18000 1 CDT}
+    {1477810800 -21600 0 CST}
+    {1491120000 -18000 1 CDT}
+    {1509260400 -21600 0 CST}
+    {1522569600 -18000 1 CDT}
+    {1540710000 -21600 0 CST}
+    {1554624000 -18000 1 CDT}
+    {1572159600 -21600 0 CST}
+    {1586073600 -18000 1 CDT}
+    {1603609200 -21600 0 CST}
+    {1617523200 -18000 1 CDT}
+    {1635663600 -21600 0 CST}
+    {1648972800 -18000 1 CDT}
+    {1667113200 -21600 0 CST}
+    {1680422400 -18000 1 CDT}
+    {1698562800 -21600 0 CST}
+    {1712476800 -18000 1 CDT}
+    {1730012400 -21600 0 CST}
+    {1743926400 -18000 1 CDT}
+    {1761462000 -21600 0 CST}
+    {1775376000 -18000 1 CDT}
+    {1792911600 -21600 0 CST}
+    {1806825600 -18000 1 CDT}
+    {1824966000 -21600 0 CST}
+    {1838275200 -18000 1 CDT}
+    {1856415600 -21600 0 CST}
+    {1869724800 -18000 1 CDT}
+    {1887865200 -21600 0 CST}
+    {1901779200 -18000 1 CDT}
+    {1919314800 -21600 0 CST}
+    {1933228800 -18000 1 CDT}
+    {1950764400 -21600 0 CST}
+    {1964678400 -18000 1 CDT}
+    {1982818800 -21600 0 CST}
+    {1996128000 -18000 1 CDT}
+    {2014268400 -21600 0 CST}
+    {2027577600 -18000 1 CDT}
+    {2045718000 -21600 0 CST}
+    {2059027200 -18000 1 CDT}
+    {2077167600 -21600 0 CST}
+    {2091081600 -18000 1 CDT}
+    {2108617200 -21600 0 CST}
+    {2122531200 -18000 1 CDT}
+    {2140066800 -21600 0 CST}
+    {2153980800 -18000 1 CDT}
+    {2172121200 -21600 0 CST}
+    {2185430400 -18000 1 CDT}
+    {2203570800 -21600 0 CST}
+    {2216880000 -18000 1 CDT}
+    {2235020400 -21600 0 CST}
+    {2248934400 -18000 1 CDT}
+    {2266470000 -21600 0 CST}
+    {2280384000 -18000 1 CDT}
+    {2297919600 -21600 0 CST}
+    {2311833600 -18000 1 CDT}
+    {2329369200 -21600 0 CST}
+    {2343283200 -18000 1 CDT}
+    {2361423600 -21600 0 CST}
+    {2374732800 -18000 1 CDT}
+    {2392873200 -21600 0 CST}
+    {2406182400 -18000 1 CDT}
+    {2424322800 -21600 0 CST}
+    {2438236800 -18000 1 CDT}
+    {2455772400 -21600 0 CST}
+    {2469686400 -18000 1 CDT}
+    {2487222000 -21600 0 CST}
+    {2501136000 -18000 1 CDT}
+    {2519276400 -21600 0 CST}
+    {2532585600 -18000 1 CDT}
+    {2550726000 -21600 0 CST}
+    {2564035200 -18000 1 CDT}
+    {2582175600 -21600 0 CST}
+    {2596089600 -18000 1 CDT}
+    {2613625200 -21600 0 CST}
+    {2627539200 -18000 1 CDT}
+    {2645074800 -21600 0 CST}
+    {2658988800 -18000 1 CDT}
+    {2676524400 -21600 0 CST}
+    {2690438400 -18000 1 CDT}
+    {2708578800 -21600 0 CST}
+    {2721888000 -18000 1 CDT}
+    {2740028400 -21600 0 CST}
+    {2753337600 -18000 1 CDT}
+    {2771478000 -21600 0 CST}
+    {2785392000 -18000 1 CDT}
+    {2802927600 -21600 0 CST}
+    {2816841600 -18000 1 CDT}
+    {2834377200 -21600 0 CST}
+    {2848291200 -18000 1 CDT}
+    {2866431600 -21600 0 CST}
+    {2879740800 -18000 1 CDT}
+    {2897881200 -21600 0 CST}
+    {2911190400 -18000 1 CDT}
+    {2929330800 -21600 0 CST}
+    {2942640000 -18000 1 CDT}
+    {2960780400 -21600 0 CST}
+    {2974694400 -18000 1 CDT}
+    {2992230000 -21600 0 CST}
+    {3006144000 -18000 1 CDT}
+    {3023679600 -21600 0 CST}
+    {3037593600 -18000 1 CDT}
+    {3055734000 -21600 0 CST}
+    {3069043200 -18000 1 CDT}
+    {3087183600 -21600 0 CST}
+    {3100492800 -18000 1 CDT}
+    {3118633200 -21600 0 CST}
+    {3132547200 -18000 1 CDT}
+    {3150082800 -21600 0 CST}
+    {3163996800 -18000 1 CDT}
+    {3181532400 -21600 0 CST}
+    {3195446400 -18000 1 CDT}
+    {3212982000 -21600 0 CST}
+    {3226896000 -18000 1 CDT}
+    {3245036400 -21600 0 CST}
+    {3258345600 -18000 1 CDT}
+    {3276486000 -21600 0 CST}
+    {3289795200 -18000 1 CDT}
+    {3307935600 -21600 0 CST}
+    {3321849600 -18000 1 CDT}
+    {3339385200 -21600 0 CST}
+    {3353299200 -18000 1 CDT}
+    {3370834800 -21600 0 CST}
+    {3384748800 -18000 1 CDT}
+    {3402889200 -21600 0 CST}
+    {3416198400 -18000 1 CDT}
+    {3434338800 -21600 0 CST}
+    {3447648000 -18000 1 CDT}
+    {3465788400 -21600 0 CST}
+    {3479702400 -18000 1 CDT}
+    {3497238000 -21600 0 CST}
+    {3511152000 -18000 1 CDT}
+    {3528687600 -21600 0 CST}
+    {3542601600 -18000 1 CDT}
+    {3560137200 -21600 0 CST}
+    {3574051200 -18000 1 CDT}
+    {3592191600 -21600 0 CST}
+    {3605500800 -18000 1 CDT}
+    {3623641200 -21600 0 CST}
+    {3636950400 -18000 1 CDT}
+    {3655090800 -21600 0 CST}
+    {3669004800 -18000 1 CDT}
+    {3686540400 -21600 0 CST}
+    {3700454400 -18000 1 CDT}
+    {3717990000 -21600 0 CST}
+    {3731904000 -18000 1 CDT}
+    {3750044400 -21600 0 CST}
+    {3763353600 -18000 1 CDT}
+    {3781494000 -21600 0 CST}
+    {3794803200 -18000 1 CDT}
+    {3812943600 -21600 0 CST}
+    {3826252800 -18000 1 CDT}
+    {3844393200 -21600 0 CST}
+    {3858307200 -18000 1 CDT}
+    {3875842800 -21600 0 CST}
+    {3889756800 -18000 1 CDT}
+    {3907292400 -21600 0 CST}
+    {3921206400 -18000 1 CDT}
+    {3939346800 -21600 0 CST}
+    {3952656000 -18000 1 CDT}
+    {3970796400 -21600 0 CST}
+    {3984105600 -18000 1 CDT}
+    {4002246000 -21600 0 CST}
+    {4016160000 -18000 1 CDT}
+    {4033695600 -21600 0 CST}
+    {4047609600 -18000 1 CDT}
+    {4065145200 -21600 0 CST}
+    {4079059200 -18000 1 CDT}
+    {4096594800 -21600 0 CST}
+}
diff --git a/library/tzdata/America/Barbados b/library/tzdata/America/Barbados
new file mode 100644
index 0000000..5c06408
--- /dev/null
+++ b/library/tzdata/America/Barbados
@@ -0,0 +1,15 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Barbados) {
+    {-9223372036854775808 -14308 0 LMT}
+    {-1451678492 -14308 0 BMT}
+    {-1199217692 -14400 0 AST}
+    {234943200 -10800 1 ADT}
+    {244616400 -14400 0 AST}
+    {261554400 -10800 1 ADT}
+    {276066000 -14400 0 AST}
+    {293004000 -10800 1 ADT}
+    {307515600 -14400 0 AST}
+    {325058400 -10800 1 ADT}
+    {338706000 -14400 0 AST}
+}
diff --git a/library/tzdata/America/Belem b/library/tzdata/America/Belem
new file mode 100644
index 0000000..ed92fd1
--- /dev/null
+++ b/library/tzdata/America/Belem
@@ -0,0 +1,35 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Belem) {
+    {-9223372036854775808 -11636 0 LMT}
+    {-1767213964 -10800 0 BRT}
+    {-1206957600 -7200 1 BRST}
+    {-1191362400 -10800 0 BRT}
+    {-1175374800 -7200 1 BRST}
+    {-1159826400 -10800 0 BRT}
+    {-633819600 -7200 1 BRST}
+    {-622069200 -10800 0 BRT}
+    {-602283600 -7200 1 BRST}
+    {-591832800 -10800 0 BRT}
+    {-570747600 -7200 1 BRST}
+    {-560210400 -10800 0 BRT}
+    {-539125200 -7200 1 BRST}
+    {-531352800 -10800 0 BRT}
+    {-191365200 -7200 1 BRST}
+    {-184197600 -10800 0 BRT}
+    {-155163600 -7200 1 BRST}
+    {-150069600 -10800 0 BRT}
+    {-128898000 -7200 1 BRST}
+    {-121125600 -10800 0 BRT}
+    {-99954000 -7200 1 BRST}
+    {-89589600 -10800 0 BRT}
+    {-68418000 -7200 1 BRST}
+    {-57967200 -10800 0 BRT}
+    {499748400 -7200 1 BRST}
+    {511236000 -10800 0 BRT}
+    {530593200 -7200 1 BRST}
+    {540266400 -10800 0 BRT}
+    {562129200 -7200 1 BRST}
+    {571197600 -10800 0 BRT}
+    {590032800 -10800 0 BRT}
+}
diff --git a/library/tzdata/America/Belize b/library/tzdata/America/Belize
new file mode 100644
index 0000000..547fd72
--- /dev/null
+++ b/library/tzdata/America/Belize
@@ -0,0 +1,60 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Belize) {
+    {-9223372036854775808 -21168 0 LMT}
+    {-1822500432 -21600 0 CST}
+    {-1616954400 -19800 1 CHDT}
+    {-1606069800 -21600 0 CST}
+    {-1585504800 -19800 1 CHDT}
+    {-1574015400 -21600 0 CST}
+    {-1554055200 -19800 1 CHDT}
+    {-1542565800 -21600 0 CST}
+    {-1522605600 -19800 1 CHDT}
+    {-1511116200 -21600 0 CST}
+    {-1490551200 -19800 1 CHDT}
+    {-1479666600 -21600 0 CST}
+    {-1459101600 -19800 1 CHDT}
+    {-1448217000 -21600 0 CST}
+    {-1427652000 -19800 1 CHDT}
+    {-1416162600 -21600 0 CST}
+    {-1396202400 -19800 1 CHDT}
+    {-1384713000 -21600 0 CST}
+    {-1364752800 -19800 1 CHDT}
+    {-1353263400 -21600 0 CST}
+    {-1333303200 -19800 1 CHDT}
+    {-1321813800 -21600 0 CST}
+    {-1301248800 -19800 1 CHDT}
+    {-1290364200 -21600 0 CST}
+    {-1269799200 -19800 1 CHDT}
+    {-1258914600 -21600 0 CST}
+    {-1238349600 -19800 1 CHDT}
+    {-1226860200 -21600 0 CST}
+    {-1206900000 -19800 1 CHDT}
+    {-1195410600 -21600 0 CST}
+    {-1175450400 -19800 1 CHDT}
+    {-1163961000 -21600 0 CST}
+    {-1143396000 -19800 1 CHDT}
+    {-1132511400 -21600 0 CST}
+    {-1111946400 -19800 1 CHDT}
+    {-1101061800 -21600 0 CST}
+    {-1080496800 -19800 1 CHDT}
+    {-1069612200 -21600 0 CST}
+    {-1049047200 -19800 1 CHDT}
+    {-1037557800 -21600 0 CST}
+    {-1017597600 -19800 1 CHDT}
+    {-1006108200 -21600 0 CST}
+    {-986148000 -19800 1 CHDT}
+    {-974658600 -21600 0 CST}
+    {-954093600 -19800 1 CHDT}
+    {-943209000 -21600 0 CST}
+    {-922644000 -19800 1 CHDT}
+    {-911759400 -21600 0 CST}
+    {-891194400 -19800 1 CHDT}
+    {-879705000 -21600 0 CST}
+    {-859744800 -19800 1 CHDT}
+    {-848255400 -21600 0 CST}
+    {123919200 -18000 1 CDT}
+    {129618000 -21600 0 CST}
+    {409039200 -18000 1 CDT}
+    {413874000 -21600 0 CST}
+}
diff --git a/library/tzdata/America/Blanc-Sablon b/library/tzdata/America/Blanc-Sablon
new file mode 100755
index 0000000..d5485e8
--- /dev/null
+++ b/library/tzdata/America/Blanc-Sablon
@@ -0,0 +1,12 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Blanc-Sablon) {
+    {-9223372036854775808 -13708 0 LMT}
+    {-2713896692 -14400 0 AST}
+    {-1632074400 -10800 1 ADT}
+    {-1615143600 -14400 0 AST}
+    {-880221600 -10800 1 AWT}
+    {-769395600 -10800 1 APT}
+    {-765399600 -14400 0 AST}
+    {14400 -14400 0 AST}
+}
diff --git a/library/tzdata/America/Boa_Vista b/library/tzdata/America/Boa_Vista
new file mode 100644
index 0000000..c85bc27
--- /dev/null
+++ b/library/tzdata/America/Boa_Vista
@@ -0,0 +1,40 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Boa_Vista) {
+    {-9223372036854775808 -14560 0 LMT}
+    {-1767211040 -14400 0 AMT}
+    {-1206954000 -10800 1 AMST}
+    {-1191358800 -14400 0 AMT}
+    {-1175371200 -10800 1 AMST}
+    {-1159822800 -14400 0 AMT}
+    {-633816000 -10800 1 AMST}
+    {-622065600 -14400 0 AMT}
+    {-602280000 -10800 1 AMST}
+    {-591829200 -14400 0 AMT}
+    {-570744000 -10800 1 AMST}
+    {-560206800 -14400 0 AMT}
+    {-539121600 -10800 1 AMST}
+    {-531349200 -14400 0 AMT}
+    {-191361600 -10800 1 AMST}
+    {-184194000 -14400 0 AMT}
+    {-155160000 -10800 1 AMST}
+    {-150066000 -14400 0 AMT}
+    {-128894400 -10800 1 AMST}
+    {-121122000 -14400 0 AMT}
+    {-99950400 -10800 1 AMST}
+    {-89586000 -14400 0 AMT}
+    {-68414400 -10800 1 AMST}
+    {-57963600 -14400 0 AMT}
+    {499752000 -10800 1 AMST}
+    {511239600 -14400 0 AMT}
+    {530596800 -10800 1 AMST}
+    {540270000 -14400 0 AMT}
+    {562132800 -10800 1 AMST}
+    {571201200 -14400 0 AMT}
+    {590036400 -14400 0 AMT}
+    {938664000 -14400 0 AMT}
+    {938923200 -10800 1 AMST}
+    {951620400 -14400 0 AMT}
+    {970977600 -10800 1 AMST}
+    {971578800 -14400 0 AMT}
+}
diff --git a/library/tzdata/America/Bogota b/library/tzdata/America/Bogota
new file mode 100644
index 0000000..f727d17
--- /dev/null
+++ b/library/tzdata/America/Bogota
@@ -0,0 +1,9 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Bogota) {
+    {-9223372036854775808 -17780 0 LMT}
+    {-2707671820 -17780 0 BMT}
+    {-1739041420 -18000 0 COT}
+    {704869200 -14400 1 COST}
+    {733896000 -18000 0 COT}
+}
diff --git a/library/tzdata/America/Boise b/library/tzdata/America/Boise
new file mode 100644
index 0000000..62b22a0
--- /dev/null
+++ b/library/tzdata/America/Boise
@@ -0,0 +1,281 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Boise) {
+    {-9223372036854775808 -27889 0 LMT}
+    {-2717640000 -28800 0 PST}
+    {-1633269600 -25200 1 PDT}
+    {-1615129200 -28800 0 PST}
+    {-1601820000 -25200 1 PDT}
+    {-1583679600 -28800 0 PST}
+    {-1471788000 -25200 0 MST}
+    {-880210800 -21600 1 MWT}
+    {-769395600 -21600 1 MPT}
+    {-765388800 -25200 0 MST}
+    {-84380400 -21600 1 MDT}
+    {-68659200 -25200 0 MST}
+    {-52930800 -21600 1 MDT}
+    {-37209600 -25200 0 MST}
+    {-21481200 -21600 1 MDT}
+    {-5760000 -25200 0 MST}
+    {9968400 -21600 1 MDT}
+    {25689600 -25200 0 MST}
+    {41418000 -21600 1 MDT}
+    {57744000 -25200 0 MST}
+    {73472400 -21600 1 MDT}
+    {89193600 -25200 0 MST}
+    {104922000 -21600 1 MDT}
+    {120643200 -25200 0 MST}
+    {126255600 -25200 0 MST}
+    {129114000 -21600 0 MDT}
+    {152092800 -25200 0 MST}
+    {162378000 -21600 1 MDT}
+    {183542400 -25200 0 MST}
+    {199270800 -21600 1 MDT}
+    {215596800 -25200 0 MST}
+    {230720400 -21600 1 MDT}
+    {247046400 -25200 0 MST}
+    {262774800 -21600 1 MDT}
+    {278496000 -25200 0 MST}
+    {294224400 -21600 1 MDT}
+    {309945600 -25200 0 MST}
+    {325674000 -21600 1 MDT}
+    {341395200 -25200 0 MST}
+    {357123600 -21600 1 MDT}
+    {372844800 -25200 0 MST}
+    {388573200 -21600 1 MDT}
+    {404899200 -25200 0 MST}
+    {420022800 -21600 1 MDT}
+    {436348800 -25200 0 MST}
+    {452077200 -21600 1 MDT}
+    {467798400 -25200 0 MST}
+    {483526800 -21600 1 MDT}
+    {499248000 -25200 0 MST}
+    {514976400 -21600 1 MDT}
+    {530697600 -25200 0 MST}
+    {544611600 -21600 1 MDT}
+    {562147200 -25200 0 MST}
+    {576061200 -21600 1 MDT}
+    {594201600 -25200 0 MST}
+    {607510800 -21600 1 MDT}
+    {625651200 -25200 0 MST}
+    {638960400 -21600 1 MDT}
+    {657100800 -25200 0 MST}
+    {671014800 -21600 1 MDT}
+    {688550400 -25200 0 MST}
+    {702464400 -21600 1 MDT}
+    {720000000 -25200 0 MST}
+    {733914000 -21600 1 MDT}
+    {752054400 -25200 0 MST}
+    {765363600 -21600 1 MDT}
+    {783504000 -25200 0 MST}
+    {796813200 -21600 1 MDT}
+    {814953600 -25200 0 MST}
+    {828867600 -21600 1 MDT}
+    {846403200 -25200 0 MST}
+    {860317200 -21600 1 MDT}
+    {877852800 -25200 0 MST}
+    {891766800 -21600 1 MDT}
+    {909302400 -25200 0 MST}
+    {923216400 -21600 1 MDT}
+    {941356800 -25200 0 MST}
+    {954666000 -21600 1 MDT}
+    {972806400 -25200 0 MST}
+    {986115600 -21600 1 MDT}
+    {1004256000 -25200 0 MST}
+    {1018170000 -21600 1 MDT}
+    {1035705600 -25200 0 MST}
+    {1049619600 -21600 1 MDT}
+    {1067155200 -25200 0 MST}
+    {1081069200 -21600 1 MDT}
+    {1099209600 -25200 0 MST}
+    {1112518800 -21600 1 MDT}
+    {1130659200 -25200 0 MST}
+    {1143968400 -21600 1 MDT}
+    {1162108800 -25200 0 MST}
+    {1173603600 -21600 1 MDT}
+    {1194163200 -25200 0 MST}
+    {1205053200 -21600 1 MDT}
+    {1225612800 -25200 0 MST}
+    {1236502800 -21600 1 MDT}
+    {1257062400 -25200 0 MST}
+    {1268557200 -21600 1 MDT}
+    {1289116800 -25200 0 MST}
+    {1300006800 -21600 1 MDT}
+    {1320566400 -25200 0 MST}
+    {1331456400 -21600 1 MDT}
+    {1352016000 -25200 0 MST}
+    {1362906000 -21600 1 MDT}
+    {1383465600 -25200 0 MST}
+    {1394355600 -21600 1 MDT}
+    {1414915200 -25200 0 MST}
+    {1425805200 -21600 1 MDT}
+    {1446364800 -25200 0 MST}
+    {1457859600 -21600 1 MDT}
+    {1478419200 -25200 0 MST}
+    {1489309200 -21600 1 MDT}
+    {1509868800 -25200 0 MST}
+    {1520758800 -21600 1 MDT}
+    {1541318400 -25200 0 MST}
+    {1552208400 -21600 1 MDT}
+    {1572768000 -25200 0 MST}
+    {1583658000 -21600 1 MDT}
+    {1604217600 -25200 0 MST}
+    {1615712400 -21600 1 MDT}
+    {1636272000 -25200 0 MST}
+    {1647162000 -21600 1 MDT}
+    {1667721600 -25200 0 MST}
+    {1678611600 -21600 1 MDT}
+    {1699171200 -25200 0 MST}
+    {1710061200 -21600 1 MDT}
+    {1730620800 -25200 0 MST}
+    {1741510800 -21600 1 MDT}
+    {1762070400 -25200 0 MST}
+    {1772960400 -21600 1 MDT}
+    {1793520000 -25200 0 MST}
+    {1805014800 -21600 1 MDT}
+    {1825574400 -25200 0 MST}
+    {1836464400 -21600 1 MDT}
+    {1857024000 -25200 0 MST}
+    {1867914000 -21600 1 MDT}
+    {1888473600 -25200 0 MST}
+    {1899363600 -21600 1 MDT}
+    {1919923200 -25200 0 MST}
+    {1930813200 -21600 1 MDT}
+    {1951372800 -25200 0 MST}
+    {1962867600 -21600 1 MDT}
+    {1983427200 -25200 0 MST}
+    {1994317200 -21600 1 MDT}
+    {2014876800 -25200 0 MST}
+    {2025766800 -21600 1 MDT}
+    {2046326400 -25200 0 MST}
+    {2057216400 -21600 1 MDT}
+    {2077776000 -25200 0 MST}
+    {2088666000 -21600 1 MDT}
+    {2109225600 -25200 0 MST}
+    {2120115600 -21600 1 MDT}
+    {2140675200 -25200 0 MST}
+    {2152170000 -21600 1 MDT}
+    {2172729600 -25200 0 MST}
+    {2183619600 -21600 1 MDT}
+    {2204179200 -25200 0 MST}
+    {2215069200 -21600 1 MDT}
+    {2235628800 -25200 0 MST}
+    {2246518800 -21600 1 MDT}
+    {2267078400 -25200 0 MST}
+    {2277968400 -21600 1 MDT}
+    {2298528000 -25200 0 MST}
+    {2309418000 -21600 1 MDT}
+    {2329977600 -25200 0 MST}
+    {2341472400 -21600 1 MDT}
+    {2362032000 -25200 0 MST}
+    {2372922000 -21600 1 MDT}
+    {2393481600 -25200 0 MST}
+    {2404371600 -21600 1 MDT}
+    {2424931200 -25200 0 MST}
+    {2435821200 -21600 1 MDT}
+    {2456380800 -25200 0 MST}
+    {2467270800 -21600 1 MDT}
+    {2487830400 -25200 0 MST}
+    {2499325200 -21600 1 MDT}
+    {2519884800 -25200 0 MST}
+    {2530774800 -21600 1 MDT}
+    {2551334400 -25200 0 MST}
+    {2562224400 -21600 1 MDT}
+    {2582784000 -25200 0 MST}
+    {2593674000 -21600 1 MDT}
+    {2614233600 -25200 0 MST}
+    {2625123600 -21600 1 MDT}
+    {2645683200 -25200 0 MST}
+    {2656573200 -21600 1 MDT}
+    {2677132800 -25200 0 MST}
+    {2688627600 -21600 1 MDT}
+    {2709187200 -25200 0 MST}
+    {2720077200 -21600 1 MDT}
+    {2740636800 -25200 0 MST}
+    {2751526800 -21600 1 MDT}
+    {2772086400 -25200 0 MST}
+    {2782976400 -21600 1 MDT}
+    {2803536000 -25200 0 MST}
+    {2814426000 -21600 1 MDT}
+    {2834985600 -25200 0 MST}
+    {2846480400 -21600 1 MDT}
+    {2867040000 -25200 0 MST}
+    {2877930000 -21600 1 MDT}
+    {2898489600 -25200 0 MST}
+    {2909379600 -21600 1 MDT}
+    {2929939200 -25200 0 MST}
+    {2940829200 -21600 1 MDT}
+    {2961388800 -25200 0 MST}
+    {2972278800 -21600 1 MDT}
+    {2992838400 -25200 0 MST}
+    {3003728400 -21600 1 MDT}
+    {3024288000 -25200 0 MST}
+    {3035782800 -21600 1 MDT}
+    {3056342400 -25200 0 MST}
+    {3067232400 -21600 1 MDT}
+    {3087792000 -25200 0 MST}
+    {3098682000 -21600 1 MDT}
+    {3119241600 -25200 0 MST}
+    {3130131600 -21600 1 MDT}
+    {3150691200 -25200 0 MST}
+    {3161581200 -21600 1 MDT}
+    {3182140800 -25200 0 MST}
+    {3193030800 -21600 1 MDT}
+    {3213590400 -25200 0 MST}
+    {3225085200 -21600 1 MDT}
+    {3245644800 -25200 0 MST}
+    {3256534800 -21600 1 MDT}
+    {3277094400 -25200 0 MST}
+    {3287984400 -21600 1 MDT}
+    {3308544000 -25200 0 MST}
+    {3319434000 -21600 1 MDT}
+    {3339993600 -25200 0 MST}
+    {3350883600 -21600 1 MDT}
+    {3371443200 -25200 0 MST}
+    {3382938000 -21600 1 MDT}
+    {3403497600 -25200 0 MST}
+    {3414387600 -21600 1 MDT}
+    {3434947200 -25200 0 MST}
+    {3445837200 -21600 1 MDT}
+    {3466396800 -25200 0 MST}
+    {3477286800 -21600 1 MDT}
+    {3497846400 -25200 0 MST}
+    {3508736400 -21600 1 MDT}
+    {3529296000 -25200 0 MST}
+    {3540186000 -21600 1 MDT}
+    {3560745600 -25200 0 MST}
+    {3572240400 -21600 1 MDT}
+    {3592800000 -25200 0 MST}
+    {3603690000 -21600 1 MDT}
+    {3624249600 -25200 0 MST}
+    {3635139600 -21600 1 MDT}
+    {3655699200 -25200 0 MST}
+    {3666589200 -21600 1 MDT}
+    {3687148800 -25200 0 MST}
+    {3698038800 -21600 1 MDT}
+    {3718598400 -25200 0 MST}
+    {3730093200 -21600 1 MDT}
+    {3750652800 -25200 0 MST}
+    {3761542800 -21600 1 MDT}
+    {3782102400 -25200 0 MST}
+    {3792992400 -21600 1 MDT}
+    {3813552000 -25200 0 MST}
+    {3824442000 -21600 1 MDT}
+    {3845001600 -25200 0 MST}
+    {3855891600 -21600 1 MDT}
+    {3876451200 -25200 0 MST}
+    {3887341200 -21600 1 MDT}
+    {3907900800 -25200 0 MST}
+    {3919395600 -21600 1 MDT}
+    {3939955200 -25200 0 MST}
+    {3950845200 -21600 1 MDT}
+    {3971404800 -25200 0 MST}
+    {3982294800 -21600 1 MDT}
+    {4002854400 -25200 0 MST}
+    {4013744400 -21600 1 MDT}
+    {4034304000 -25200 0 MST}
+    {4045194000 -21600 1 MDT}
+    {4065753600 -25200 0 MST}
+    {4076643600 -21600 1 MDT}
+    {4097203200 -25200 0 MST}
+}
diff --git a/library/tzdata/America/Buenos_Aires b/library/tzdata/America/Buenos_Aires
new file mode 100644
index 0000000..1389195
--- /dev/null
+++ b/library/tzdata/America/Buenos_Aires
@@ -0,0 +1,5 @@
+# created by tools/tclZIC.tcl - do not edit
+if {![info exists TZData(America/Argentina/Buenos_Aires)]} {
+    LoadTimeZoneFile America/Argentina/Buenos_Aires
+}
+set TZData(:America/Buenos_Aires) $TZData(:America/Argentina/Buenos_Aires)
diff --git a/library/tzdata/America/Cambridge_Bay b/library/tzdata/America/Cambridge_Bay
new file mode 100644
index 0000000..23004bb
--- /dev/null
+++ b/library/tzdata/America/Cambridge_Bay
@@ -0,0 +1,252 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:America/Cambridge_Bay) {
+    {-9223372036854775808 0 0 zzz}
+    {-1577923200 -25200 0 MST}
+    {-880210800 -21600 1 MWT}
+    {-769395600 -21600 1 MPT}
+    {-765388800 -25200 0 MST}
+    {-147891600 -18000 1 MDDT}
+    {-131562000 -25200 0 MST}
+    {325674000 -21600 1 MDT}
+    {341395200 -25200 0 MST}
+    {357123600 -21600 1 MDT}
+    {372844800 -25200 0 MST}
+    {388573200 -21600 1 MDT}
+    {404899200 -25200 0 MST}
+    {420022800 -21600 1 MDT}
+    {436348800 -25200 0 MST}
+    {452077200 -21600 1 MDT}
+    {467798400 -25200 0 MST}
+    {483526800 -21600 1 MDT}
+    {499248000 -25200 0 MST}
+    {514976400 -21600 1 MDT}
+    {530697600 -25200 0 MST}
+    {544611600 -21600 1 MDT}
+    {562147200 -25200 0 MST}
+    {576061200 -21600 1 MDT}
+    {594201600 -25200 0 MST}
+    {607510800 -21600 1 MDT}
+    {625651200 -25200 0 MST}
+    {638960400 -21600 1 MDT}
+    {657100800 -25200 0 MST}
+    {671014800 -21600 1 MDT}
+    {688550400 -25200 0 MST}
+    {702464400 -21600 1 MDT}
+    {720000000 -25200 0 MST}
+    {733914000 -21600 1 MDT}
+    {752054400 -25200 0 MST}
+    {765363600 -21600 1 MDT}
+    {783504000 -25200 0 MST}
+    {796813200 -21600 1 MDT}
+    {814953600 -25200 0 MST}
+    {828867600 -21600 1 MDT}
+    {846403200 -25200 0 MST}
+    {860317200 -21600 1 MDT}
+    {877852800 -25200 0 MST}
+    {891766800 -21600 1 MDT}
+    {909302400 -25200 0 MST}
+    {923216400 -21600 1 MDT}
+    {941360400 -21600 0 CST}
+    {954662400 -18000 1 CDT}
+    {972806400 -18000 0 EST}
+    {973400400 -21600 0 CST}
+    {986115600 -21600 0 MDT}
+    {1004256000 -25200 0 MST}
+    {1018170000 -21600 1 MDT}
+    {1035705600 -25200 0 MST}
+    {1049619600 -21600 1 MDT}
+    {1067155200 -25200 0 MST}
+    {1081069200 -21600 1 MDT}
+    {1099209600 -25200 0 MST}
+    {1112518800 -21600 1 MDT}
+    {1130659200 -25200 0 MST}
+    {1143968400 -21600 1 MDT}
+    {1162108800 -25200 0 MST}
+    {1173603600 -21600 1 MDT}
+    {1194163200 -25200 0 MST}
+    {1205053200 -21600 1 MDT}
+    {1225612800 -25200 0 MST}
+    {1236502800 -21600 1 MDT}
+    {1257062400 -25200 0 MST}
+    {1268557200 -21600 1 MDT}
+    {1289116800 -25200 0 MST}
+    {1300006800 -21600 1 MDT}
+    {1320566400 -25200 0 MST}
+    {1331456400 -21600 1 MDT}
+    {1352016000 -25200 0 MST}
+    {1362906000 -21600 1 MDT}
+    {1383465600 -25200 0 MST}
+    {1394355600 -21600 1 MDT}
+    {1414915200 -25200 0 MST}
+    {1425805200 -21600 1 MDT}
+    {1446364800 -25200 0 MST}
+    {1457859600 -21600 1 MDT}
+    {1478419200 -25200 0 MST}
+    {1489309200 -21600 1 MDT}
+    {1509868800 -25200 0 MST}
+    {1520758800 -21600 1 MDT}
+    {1541318400 -25200 0 MST}
+    {1552208400 -21600 1 MDT}
+    {1572768000 -25200 0 MST}
+    {1583658000 -21600 1 MDT}
+    {1604217600 -25200 0 MST}
+    {1615712400 -21600 1 MDT}
+    {1636272000 -25200 0 MST}
+    {1647162000 -21600 1 MDT}
+    {1667721600 -25200 0 MST}
+    {1678611600 -21600 1 MDT}
+    {1699171200 -25200 0 MST}
+    {1710061200 -21600 1 MDT}
+    {1730620800 -25200 0 MST}
+    {1741510800 -21600 1 MDT}
+    {1762070400 -25200 0 MST}
+    {1772960400 -21600 1 MDT}
+    {1793520000 -25200 0 MST}
+    {1805014800 -21600 1 MDT}
+    {1825574400 -25200 0 MST}
+    {1836464400 -21600 1 MDT}
+    {1857024000 -25200 0 MST}
+    {1867914000 -21600 1 MDT}
+    {1888473600 -25200 0 MST}
+    {1899363600 -21600 1 MDT}
+    {1919923200 -25200 0 MST}
+    {1930813200 -21600 1 MDT}
+    {1951372800 -25200 0 MST}
+    {1962867600 -21600 1 MDT}
+    {1983427200 -25200 0 MST}
+    {1994317200 -21600 1 MDT}
+    {2014876800 -25200 0 MST}
+    {2025766800 -21600 1 MDT}
+    {2046326400 -25200 0 MST}
+    {2057216400 -21600 1 MDT}
+    {2077776000 -25200 0 MST}
+    {2088666000 -21600 1 MDT}
+    {2109225600 -25200 0 MST}
+    {2120115600 -21600 1 MDT}
+    {2140675200 -25200 0 MST}
+    {2152170000 -21600 1 MDT}
+    {2172729600 -25200 0 MST}
+    {2183619600 -21600 1 MDT}
+    {2204179200 -25200 0 MST}
+    {2215069200 -21600 1 MDT}
+    {2235628800 -25200 0 MST}
+    {2246518800 -21600 1 MDT}
+    {2267078400 -25200 0 MST}
+    {2277968400 -21600 1 MDT}
+    {2298528000 -25200 0 MST}
+    {2309418000 -21600 1 MDT}
+    {2329977600 -25200 0 MST}
+    {2341472400 -21600 1 MDT}
+    {2362032000 -25200 0 MST}
+    {2372922000 -21600 1 MDT}
+    {2393481600 -25200 0 MST}
+    {2404371600 -21600 1 MDT}
+    {2424931200 -25200 0 MST}
+    {2435821200 -21600 1 MDT}
+    {2456380800 -25200 0 MST}
+    {2467270800 -21600 1 MDT}
+    {2487830400 -25200 0 MST}
+    {2499325200 -21600 1 MDT}
+    {2519884800 -25200 0 MST}
+    {2530774800 -21600 1 MDT}
+    {2551334400 -25200 0 MST}
+    {2562224400 -21600 1 MDT}
+    {2582784000 -25200 0 MST}
+    {2593674000 -21600 1 MDT}
+    {2614233600 -25200 0 MST}
+    {2625123600 -21600 1 MDT}
+    {2645683200 -25200 0 MST}
+    {2656573200 -21600 1 MDT}
+    {2677132800 -25200 0 MST}
+    {2688627600 -21600 1 MDT}
+    {2709187200 -25200 0 MST}
+    {2720077200 -21600 1 MDT}
+    {2740636800 -25200 0 MST}
+    {2751526800 -21600 1 MDT}
+    {2772086400 -25200 0 MST}
+    {2782976400 -21600 1 MDT}
+    {2803536000 -25200 0 MST}
+    {2814426000 -21600 1 MDT}
+    {2834985600 -25200 0 MST}
+    {2846480400 -21600 1 MDT}
+    {2867040000 -25200 0 MST}
+    {2877930000 -21600 1 MDT}
+    {2898489600 -25200 0 MST}
+    {2909379600 -21600 1 MDT}
+    {2929939200 -25200 0 MST}
+    {2940829200 -21600 1 MDT}
+    {2961388800 -25200 0 MST}
+    {2972278800 -21600 1 MDT}
+    {2992838400 -25200 0 MST}
+    {3003728400 -21600 1 MDT}
+    {3024288000 -25200 0 MST}
+    {3035782800 -21600 1 MDT}
+    {3056342400 -25200 0 MST}
+    {3067232400 -21600 1 MDT}
+    {3087792000 -25200 0 MST}
+    {3098682000 -21600 1 MDT}
+    {3119241600 -25200 0 MST}
+    {3130131600 -21600 1 MDT}
+    {3150691200 -25200 0 MST}
+    {3161581200 -21600 1 MDT}
+    {3182140800 -25200 0 MST}
+    {3193030800 -21600 1 MDT}
+    {3213590400 -25200 0 MST}
+    {3225085200 -21600 1 MDT}
+    {3245644800 -25200 0 MST}
+    {3256534800 -21600 1 MDT}
+    {3277094400 -25200 0 MST}
+    {3287984400 -21600 1 MDT}
+    {3308544000 -25200 0 MST}
+    {3319434000 -21600 1 MDT}
+    {3339993600 -25200 0 MST}
+    {3350883600 -21600 1 MDT}
+    {3371443200 -25200 0 MST}
+    {3382938000 -21600 1 MDT}
+    {3403497600 -25200 0 MST}
+    {3414387600 -21600 1 MDT}
+    {3434947200 -25200 0 MST}
+    {3445837200 -21600 1 MDT}
+    {3466396800 -25200 0 MST}
+    {3477286800 -21600 1 MDT}
+    {3497846400 -25200 0 MST}
+    {3508736400 -21600 1 MDT}
+    {3529296000 -25200 0 MST}
+    {3540186000 -21600 1 MDT}
+    {3560745600 -25200 0 MST}
+    {3572240400 -21600 1 MDT}
+    {3592800000 -25200 0 MST}
+    {3603690000 -21600 1 MDT}
+    {3624249600 -25200 0 MST}
+    {3635139600 -21600 1 MDT}
+    {3655699200 -25200 0 MST}
+    {3666589200 -21600 1 MDT}
+    {3687148800 -25200 0 MST}
+    {3698038800 -21600 1 MDT}
+    {3718598400 -25200 0 MST}
+    {3730093200 -21600 1 MDT}
+    {3750652800 -25200 0 MST}
+    {3761542800 -21600 1 MDT}
+    {3782102400 -25200 0 MST}
+    {3792992400 -21600 1 MDT}
+    {3813552000 -25200 0 MST}
+    {3824442000 -21600 1 MDT}
+    {3845001600 -25200 0 MST}
+    {3855891600 -21600 1 MDT}
+    {3876451200 -25200 0 MST}
+    {3887341200 -21600 1 MDT}
+    {3907900800 -25200 0 MST}
+    {3919395600 -21600 1 MDT}
+    {3939955200 -25200 0 MST}
+    {3950845200 -21600 1 MDT}
+    {3971404800 -25200 0 MST}
+    {3982294800 -21600 1 MDT}
+    {4002854400 -25200 0 MST}
+    {4013744400 -21600 1 MDT}
+    {4034304000 -25200 0 MST}
+    {4045194000 -21600 1 MDT}
+    {4065753600 -25200 0 MST}
+    {4076643600 -21600 1 MDT}
+    {4097203200 -25200 0 MST}
+}
diff --git a/library/tzdata/America/Campo_Grande b/library/tzdata/America/Campo_Grande
new file mode 100644